text:
+publisher:"Vilnius Pedagogical University" +contributor:("Giraitis, Raimondas") – OATD
 You searched for +publisher:"Vilnius Pedagogical University" +contributor:("Giraitis, Raimondas"). Showing records 1 – 30 of 50 total matches.
 1. Jaška, Vaidas. Cu2+ ir Al3+ jonų įtaka mulito susidarymui.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_094815-42847 ;
 Tiriant Cu2+ jonų įtaką mulito susidarymui pagaminti metakaolino bandiniai su (2.5%, 5%, 10%, 20%, 40%, 50%) CuO koncentracijomis. Bandiniai iškaitinti 1000 °C temperatūroje. Cu2+ jonai... (more)
 Tiriant Cu2+ jonų įtaką mulito susidarymui pagaminti metakaolino bandiniai su (2.5%, 5%, 10%, 20%, 40%, 50%) CuO koncentracijomis. Bandiniai iškaitinti 1000 °C temperatūroje. Cu2+ jonai teigiamai veikia mulito susidarymą iš metakaolino. Sumažėja mulito susidarymo temperatūra, o didinant CuO koncntracija iki 10% didėja susidariusio mulito kiekis. CuO aukštoje temperatūroje jungiasi su Al2O3 sudarydamas vario aliuminatus. Metakaoline Cu2+ jonų difuzijos nestabdo dehidratacija, todėl Cu2+ difuzija vyksta greičiau. Tiriant CuAl2O4 ir Al2O3 įtaką metakaolino aukštatemperatūriniams virsmams, buvo pagaminti bandiniai kuriuose oksidu santykis lygus: Al2O3:SiO2 = 3:1. Bandiniai iškaitinti įvairiuose temperatūrose. Al2O3, 1000 °C temperatūroje, beveik nereaguoja su amorfiniu SiO2, o 1200 °C temperatūroje reaguoja silpnai. Žemesnėse temperatūrose Al2O3 labiau linkęs kristalizuotis korundo forma. Vario(II) aliuminatas aukštatemperatūrinių virsmų metu padidina susidariusio mulito kiekį. Aukštesnėse temperatūrose vario(II) aliuminatas stipriau įtakoja susidariusio mulito kiekį. Aukštatemperatūrinių virsmų vario(II) aliuminatas suskyla į CuO ir Al2O3. Išsiskyręs Al2O3 reaguoja su amorfiniu SiO2. CuO atlieka savotiško katalizatoriaus vaidmenį.
 For the research influence of Cu2+ ions to the mullite formation, was been made specimens from metakaoline and different CuO concentrations (2.5%, 5%, 10%, 20%, 40%, 50%). A specimen was heated in 1000 °C temperature. Cu2+ ions stimulate mullite formation from metakaoline. CuO reduce mullite formatting temperature. Increasing CuO concentration to 10%, increase output of mullite. Major cuo concentrations decrease output. In high temperature, CuO combine with Al2O3 in to CuAl2O4. Dehydration doesn’t slow down diffusion of Cu2+ ions in the metakaoline. Because what, Cu2+ ions diffuse faster in metakaoline. Researching influence of CuAl2O4 and Al2O3, was made specimens with Al2O3 and SiO2 relation Al2O3:SiO2 = 3:1 In 1000 °C temperature Al2O3 hardly combine with SiO2, in 1200 °C combination going weakly. In low temperatures Al2O3 crystallize in to corundum. CuAl2O4 increase mullite output. Higher temperatures makes stronger influence of CuAl2O4 to mullite formation. In higher temperatures CuAl2O4 cleave in to CuO and Al2O3. Cleaved Al2O3 combine with SiO2.
 Advisors/Committee Members: Giraitis, Raimondas (Master’s thesis supervisor), Kudabienė, Gema (Master’s thesis reviewer), Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member).
 Subjects/Keywords: Mulitas; Kaolinas; Metakaolinas; Mullite; Kaoline; Metakaoline
 Jaška, Vaidas. (2009). Cu2+ ir Al3+ jonų įtaka mulito susidarymui . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_094815-42847 ;
 Jaška, Vaidas. “Cu2+ ir Al3+ jonų įtaka mulito susidarymui.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_094815-42847 ;.
 Jaška, Vaidas. “Cu2+ ir Al3+ jonų įtaka mulito susidarymui.” 2009. Web. 19 Sep 2019.
 Jaška, Vaidas. Cu2+ ir Al3+ jonų įtaka mulito susidarymui. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_094815-42847 ;.
 Jaška, Vaidas. Cu2+ ir Al3+ jonų įtaka mulito susidarymui. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090630_094815-42847 ;
 2. Michailovskaja, Ilona. Intermetalinio junginio susidarymas sistemoje Ni-W.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184126-35293 ;
 Redukuojant vandeniliu Ni ir W oksidus 1000-1100 ̊C temperatūrų intervale, nepriklausomai nuo mišinio sudėties, susidaro tik intermetalinis junginys Ni4W. Rentgeno struktūrinės analizės pagalba buvo nustatyta kietafazių... (more)
 Redukuojant vandeniliu Ni ir W oksidus 1000-1100 ̊C temperatūrų intervale, nepriklausomai nuo mišinio sudėties, susidaro tik intermetalinis junginys Ni4W. Rentgeno struktūrinės analizės pagalba buvo nustatyta kietafazių reakcijų produktų sudėtis. Nikelio ir volframo oksidų mišiniuose vykstant redukcijai susidarantis nikelis yra volframo oksidų redukcijos katalizatorius. Nikeliui sudarius intermetalinį junginį Ni4W, volframo oksidai redukuojasi sunkiau. Mišiniai, kuriuose Ni:W=4:1, redukuojasi žemesnėje temperatūroje ir esant mažesnei vandenilio dujų koncentracijai.
 During the reduction of nickel and tungsten in a temperature range from1000- 1100 ̊C independent of composition mixtures form only Ni4W intermetallic compuond. Their formation was analyzed be of the X-ray diffraction techniques composition the products of the solid-state reactions was determined. Nickel wich is formed during the rediction is catalyst of tungsten oxide. When nickel is formed intermetallic compound Ni4W, tungsten oxide reducible heavily. Reduction of mixture (Ni:W = 4:1) lesses of the temperature and hydrogen concentration.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Giraitis, Raimondas (Master’s thesis supervisor), Ščit, Olga (Master’s thesis reviewer).
 Subjects/Keywords: Intermetaliniai junginiai; Oksidų redukcija; Lydiniai; NiW fazės; Intermetallic compounds; Oxides reduction; NiW phases; Ni4W mixture
 Michailovskaja, I. (2008). Intermetalinio junginio susidarymas sistemoje Ni-W . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184126-35293 ;
 Michailovskaja, Ilona. “Intermetalinio junginio susidarymas sistemoje Ni-W.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184126-35293 ;.
 Michailovskaja, Ilona. “Intermetalinio junginio susidarymas sistemoje Ni-W.” 2008. Web. 19 Sep 2019.
 Michailovskaja I. Intermetalinio junginio susidarymas sistemoje Ni-W. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184126-35293 ;.
 Michailovskaja I. Intermetalinio junginio susidarymas sistemoje Ni-W. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184126-35293 ;
 3. Akimceva, Tatjana. Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184504-15290 ;
 Cerio(IV) oksidas – tai aukštai taikomos paskutiniu metu medžiagos pavyzdys. Tai aktyvi medžiaga, katalizatoriuose, keramikoje. Buvo charakterizuotas nanokristalinis cerio(IV) oksidas, paruoštas iš trijų hidratuotų cerio... (more)
 Cerio(IV) oksidas – tai aukštai taikomos paskutiniu metu medžiagos pavyzdys. Tai aktyvi medžiaga, katalizatoriuose, keramikoje. Buvo charakterizuotas nanokristalinis cerio(IV) oksidas, paruoštas iš trijų hidratuotų cerio hidroksidų (CeO2.xH2O), gautų nusodinimo metodo pagalba naudojant trijų šio oksido pirmtakus: cerio(III) sulfatas, amonio cerio(IV) nitratas ir cerio(III) acetatas. Iš trijų pirmtakų dehidratacijos metu gauti CeO2 bandiniai izotermiškai kaitinami esant skirtingoms temperatūroms ir išsamiai analizuojami DTA, XRD ir SEM metodų pagalba. Buvo nustatyta šių trijų bandinių cheminė formulė, t.y. CeO2.1,2H2O, CeO2.1,7H2O ir CeO2.1,5H2O trims bandiniams, gautiems iš Ce2(SO4)3.8H2O, (NH4)2Ce(NO3)6 ir Ce(CH3COO)3.1,5H2O, atitinkamai. Naudojantis rentgeno spindulių difrakcine analize nustatyta susidarusių produktų kokybinė sudėtis bei kristalitų dydis. Sul-CeO2, am-CeO2 ir ac-CeO2 kristalitų dydžiai apie 12, 22 ir 14 nm (esant 650 °C) ir 24, 35 ir 28 nm atitinkamai (esant 750 °C). Po terminio apdorojimo padidėjo kristalizavimas ir kristalų dydis, bet dalelės buvo labiau susijungusios.
 Cerium(IV) oxide is an example of a material where the number of applications has increased rapidly, e.g., as active material in catalytic converters, catalysts, ceramics. The present study deals with the characterization of nanocrystalline cerium oxide prepared from three hydrated ceria (CeO2.xH2O), obtained by precipitation from ammonia solutions of three precursors of this oxide: the cerium(III) sulphate, the ammonium cerium(IV) nitrate and the cerium(III) acetate. The samples of CeO2 obtained from dehydration of the three precursors have been heated isothermally at various temperatures and thoroughly analyzed using DTA, XRD and SEM. The chemical formula of these three samples was established from thermogravimetric analyses, i.e., CeO2.1,2H2O, CeO2.1,7H2O and CeO2.1,5H2O for the three samples obtained from Ce2(SO4)3.8H2O, (NH4)2Ce(NO3)6 and Ce(CH3COO).1,5H2O, respectively. Using XRD analysis, the qualitative composition of the formed products as well as the crystallite size were defined. The Sul-CeO2, am-CeO2 and ac-CeO2 crystallite sizes are about 12, 22 and 14 nm (at 650 °C) and 24, 35 and 28 nm (at 750 °C). After the heat treatment, enhanced crystallinity and growth in crystallite size was observed, but particles appeared more agglomerated.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Giraitis, Raimondas (Master’s thesis supervisor), Kudabienė, Gema (Master’s thesis reviewer).
 Subjects/Keywords: Cerio(IV) oksidas; Nanodalelės; Nusodinimas; Cerium(IV) oxide; Nano-particle; Precipitation
 Akimceva, Tatjana. (2008). Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184504-15290 ;
 Akimceva, Tatjana. “Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184504-15290 ;.
 Akimceva, Tatjana. “Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius.” 2008. Web. 19 Sep 2019.
 Akimceva, Tatjana. Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184504-15290 ;.
 Akimceva, Tatjana. Smulkiakristalinio cerio(IV) oksido gavimas termiškai skaidant cerio junginius. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184504-15290 ;
 4. Vaičiakauskaitė, Inga. Leucito sintezė zolių-gelių metodu.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_124020-91482 ;
 Kalio-aliuminio-silikato leucitas (K2O • Al2O3 • 4SiO2) yra dantų porceliano komponentas. Porcelianas naudojamas stomatologijoje, gaminant dirbtinius dantų protezus ir atstatant paprasto danties struktūrą. Šio darbo... (more)
 Kalio-aliuminio-silikato leucitas (K2O • Al2O3 • 4SiO2) yra dantų porceliano komponentas. Porcelianas naudojamas stomatologijoje, gaminant dirbtinius dantų protezus ir atstatant paprasto danties struktūrą. Šio darbo tikslas buvo gauti leucitą zolių-gelių metodu. Leucito sintezei buvo naudojamos šios medžiagos: TEOS, EtOH, KNO3, Al(NO3)3 •9H2O, NH3, Peg 2000, CaF2. Leucito kristalizacija vykdoma 1100 °C temperatūroje, ekspozicijos laikas 6 val. Iš darbo rezultatų galima daryti išvadas, kad leucito kristalizacijai įtakos turi optimalios KNO3 ir Al(NO3)3 • 9H2O vandeninių tirpalų koncentracijos (KNO3 nuo 1.6M iki 2M, kai Al(NO3)3 • 9H2O 0.808 M). Taip pat sintezei įtakos turi ir tirpalo pH. Optimaliausia gelio pH yra 5-6. Pastebėta, kad leucito kristalizacijai teigiamos įtakos turi ir ultragarsas bei mikrobangos.
 Kali-aluminium-silikate mineral leucite is a component of odotic porcelain. Porcelain is used in stomatology producing unnnatural teeth and renewing tooth structure. Purpose of this work was to get leucite by zol-gel method. The starting materials of low-temperature leucite were TEOS, EtOH, KNO3, Al(NO3)3 • 9 H2O, NH3, Peg 2000, CaF2. Firstly, CaF2 was used as modifier to facilitate the crystallization of leucite. The crystallization of leucite was prepared in an electric furnace at 1100 °C and was soaked for 6 h. The results showed that optimal concentrations of KNO3 and Al(NO3)3 • 9 H2O solutions (KNO3 from 1,6M to 2M, when Al(NO3)3 • 9 H2O 0,808M) have influence on the crystallization of leucite. pH of solutions influenced the synthesis too. The optimal pH of gel is 5-6. The results showed that ultrawaves and mikrowaves have positive influence on the crystallization of leucite.
 Advisors/Committee Members: Kudabienė, Gemutė (Master’s thesis supervisor), Giraitis, Raimondas (Master’s thesis supervisor), Kurienė, Almeda (Master’s thesis reviewer), Tumkevičius, Sigitas (Master’s degree committee chair), Gefenas, Vladas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member).
 Subjects/Keywords: Leucitas; Zolis; Gelis; Dantų keramika; Leucite; Sol; Gel; Dental porcelain
 Vaičiakauskaitė, I. (2009). Leucito sintezė zolių-gelių metodu . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_124020-91482 ;
 Vaičiakauskaitė, Inga. “Leucito sintezė zolių-gelių metodu.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_124020-91482 ;.
 Vaičiakauskaitė, Inga. “Leucito sintezė zolių-gelių metodu.” 2009. Web. 19 Sep 2019.
 Vaičiakauskaitė I. Leucito sintezė zolių-gelių metodu. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_124020-91482 ;.
 Vaičiakauskaitė I. Leucito sintezė zolių-gelių metodu. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_124020-91482 ;
 5. Speteliūnaitė, Aušra. Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_143251-28206 ;
 Šiame darbe buvo tiriamos gamtinių vandenų ir gamybinių bei komunalinių nuotekų, susidarančių „Lietuvos ryto“ spaustuvėse ir Dubingių poilsiavietėje užterštumas sunkiaisiais metalais (švinu, kadmiu ir gyvsidabriu).... (more)
 Šiame darbe buvo tiriamos gamtinių vandenų ir gamybinių bei komunalinių nuotekų, susidarančių „Lietuvos ryto“ spaustuvėse ir Dubingių poilsiavietėje užterštumas sunkiaisiais metalais (švinu, kadmiu ir gyvsidabriu). Ištyrus Neries, Šešupės, Vilnios, Veržuvos upių, Daugų ežeryno ežerų ir Anulyno tvenkinio vandenis nustatyta didžiausia švino koncentracija Šešupėje žemiau Marijampolės, o kadmio ir gyvsidabrio – Neryje žemiau Vilniaus. Tačiau nė viename paviršiniame vandens telkinyje sunkiųjų metalų koncentracija neviršijo DLK. Didžiausios švino, kadmio ir gyvsidabrio koncentracijos nustatytos „Lietuvos ryto“ spaustuvės Vievyje nuotekose, o mažiausios – Dubingių poilsiavietės nuotekose po biologinio valymo. Naudojant chelatinį jonitą Purolite S 930 sunkieji metalai buvo koncentruojami iš Neries upės vandens ir nuotekų, nustatytas nuotekų išvalymo laipsnis ir apskaičiuota sunkiųjų metalų koncentracija nuotekose ir Neries upės vandenyje atlikus eliuatų analizę AAS metodu. Atlikti švino ir kadmio sorbcijos tyrimai statinėmis sąlygomis naudojant įvairių tipų sorbentus ir nustatyta, kad efektyviausiai veikia H-ir Na-formos stipriai rūgštinis katijonitas Purolite C 160. Metalų jonų šalinimui buvo panaudotos ir pigios atliekos (geležies hidroksidas, susidarantis ruošiant geriamąjį vandenį) ir nustatyta, kad jo sorbcinė geba sugerti švino ir kadmio jonus prilygsta aktyvintųjų anglių (brangaus sorbento) sorbcinei gebai.
 The pollution by heavy metals (lead, cadmium and mercury) of natural waters and industrial as well as municipal wastewaters of „Lietuvos rytas“ presses and Dubingiai resort was investigated. Analysis of natural waters (Neris, Šešupė, Vilnia, Veržuva and Daugai lakes) has shown the highest lead concentration in Šešupė below Marijampolė. The highest concentration of cadmium and mercury was determined in Neris below Vilnius. However the concentration of heavy metals was not higher than limited values. The highest concentration of lead, cadmium and mercury was determined in the wastewater of „Lietuvos rytas“ press in Vievis and the lowest in the wastewater of Dubingiai resort. Using chelating resin Purolite S 930 the heavy metals were concentrated from Neris river water and from wastewater; the removal efficiency was determined and the concentration of heavy metals in Neris river and in wastewater was calculated on the basis of AAS method. The investigation of lead and cadmium sorption was carried out using various types of sorbents. The highest efficiency of H+ and Na+ form of Purolite C 160 strong acid cation exchanger was determined when compared with other sorbents. The cheap waste such as ferrum hydroxide was also used for the removal of metal ions. It was determined that the sorption capacity of ferrum hydroxide towards lead and cadmium is similar to that of activated carbon (expensive sorbent).
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Gefenienė, Audronė (Master’s thesis supervisor), Giraitis, Raimondas (Master’s thesis reviewer).
 Subjects/Keywords: Sunkieji metalai; Gamtiniai vandenys; Nuotekos; Sorbcija; Jonų mainai; Heavy metals; Natural waters; Wastewater; Sorption; Ion exchange
 Speteliūnaitė, Aušra. (2009). Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_143251-28206 ;
 Speteliūnaitė, Aušra. “Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_143251-28206 ;.
 Speteliūnaitė, Aušra. “Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas.” 2009. Web. 19 Sep 2019.
 Speteliūnaitė, Aušra. Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_143251-28206 ;.
 Speteliūnaitė, Aušra. Sunkieji metalai (pb, cd, hg) nuotekose ir gamtiniuose vandenyse: analizė ir šalinimas. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_143251-28206 ;
 6. Grunenkova, Svetlana. Fosilinių sakų tyrimas infraraudonosios spektroskopijos metodu.
 Grunenkova, Svetlana. “Fosilinių sakų tyrimas infraraudonosios spektroskopijos metodu.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184340-36778 ;.
 Grunenkova, Svetlana. “Fosilinių sakų tyrimas infraraudonosios spektroskopijos metodu.” 2008. Web. 19 Sep 2019.
 Grunenkova, Svetlana. Fosilinių sakų tyrimas infraraudonosios spektroskopijos metodu. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184340-36778 ;.
 7. Pašin, Tatjana. 1,4- Ir 3,6-dipakeistų 2,5-piperazindionų sintezė.
 Pašin, Tatjana. “1,4- Ir 3,6-dipakeistų 2,5-piperazindionų sintezė.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174230-13332 ;.
 Pašin, Tatjana. “1,4- Ir 3,6-dipakeistų 2,5-piperazindionų sintezė.” 2008. Web. 19 Sep 2019.
 Pašin, Tatjana. 1,4- Ir 3,6-dipakeistų 2,5-piperazindionų sintezė. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174230-13332 ;.
 8. Bieliauskaitė, Rita. Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175137-94085 ;
 Darbe tiriamos magnetroniniu plazminiu (MP) būdu suformuotų Mg – Al – Zr lydinių morfologinės, korozinės ir puslaidininkinės savybės. Magnetroninio plazminio dulkinimo metodu buvo suformuotos 5Mg-Al-95Zr,... (more)
 Darbe tiriamos magnetroniniu plazminiu (MP) būdu suformuotų Mg – Al – Zr lydinių morfologinės, korozinės ir puslaidininkinės savybės. Magnetroninio plazminio dulkinimo metodu buvo suformuotos 5Mg-Al-95Zr, 33Mg-Al-67Zr, 29Mg-Al-71Zr, 24Mg-Al-76Zr, 8Mg-Al-90Zr dangos ant stiklo paviršiaus. Atominės jėgos mikroskopo (AJM) metodu nustatyta, kad magnetroniniu plazminiu būdu suformuotos Mg – Al – Zr lydinių dangos charakterizuojamos mažesniais kristalitų dydžiais ir tolygesne mikrostruktūra. Fotoelektrocheminiais ir elektrocheminio impedanso spektroskopijos metodais ištirta lydinių korozinė elgsena 0,1 M (NH4)3BO3 + 0,1 M NaCl ( pH = 8,5) tirpale. Mott – Shottky analizės metodu nustatytas puslaidininkinių paviršiaus sluoksnių laidumo pobūdis: 5Mg-Al-95Zr, 33Mg-Al-67Zr, 29Mg-Al-71Zr, 24Mg-Al-76Zr, 8Mg-Al-90Zr dangų atveju jis donorinis (n – tipo). Aptartos Mott – Shottky metodo taikymo magnetroninėms dangoms tirti galimybės.
 The aim of present work was to study corrosion properties of magnetron sputtered Mg – Al – Zr alloys and characterise semiconductor properties of the surface layers developed during corrosion. Atomic force microscopy (AFM) demonstrated, that sputtered alloys had a smaller grain size and a smoother surface. Fotocorrosion and electrochemical behaviour of tha alloys was studied in 0,1 M (NH4)3BO3 + 0,1 M NaCl ( pH = 8,5) solution. The Mott – Schottky plots of 5Mg-Al-95Zr, 33Mg-Al-67Zr, 29Mg-Al-71Zr, 24Mg-Al-76Zr, 8Mg-Al-90Zr electrodes showed a linear relationship between modified capacitance (C-2) on applied potential. It was concluded n – type semiconductivity for the layers on 5Mg-Al-95Zr, 33Mg-Al-67Zr, 29Mg-Al-71Zr, 24Mg-Al-76Zr, 8Mg-Al-90Zr alloys.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Juzeliūnas, Eimutis (Master’s thesis supervisor), Gefenienė, Audronė (Master’s thesis reviewer).
 Subjects/Keywords: Lydiniai; Magnetroninis dulkinimas; EIS; Fotopotencialai; Alloys; Magnetron sputtering; EIS; Photopotentials
 Bieliauskaitė, Rita. (2008). Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175137-94085 ;
 Bieliauskaitė, Rita. “Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175137-94085 ;.
 Bieliauskaitė, Rita. “Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas.” 2008. Web. 19 Sep 2019.
 Bieliauskaitė, Rita. Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175137-94085 ;.
 Bieliauskaitė, Rita. Magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių puslaidininkinių savybių tyrimas. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175137-94085 ;
 9. Voronovič, Roman. 5-Amino-6-(4‘-R-benzoil)-2-metilsulfanilfuro[2,3-d]pirimidinų sintezė ir reakcijos.
 Voronovič, Roman. “5-Amino-6-(4‘-R-benzoil)-2-metilsulfanilfuro[2,3-d]pirimidinų sintezė ir reakcijos.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_182533-30396 ;.
 Voronovič, Roman. “5-Amino-6-(4‘-R-benzoil)-2-metilsulfanilfuro[2,3-d]pirimidinų sintezė ir reakcijos.” 2008. Web. 19 Sep 2019.
 Voronovič, Roman. 5-Amino-6-(4‘-R-benzoil)-2-metilsulfanilfuro[2,3-d]pirimidinų sintezė ir reakcijos. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_182533-30396 ;.
 10. Saveikaitė, Neimantė. Pb(II) adsorbcija aktyvintosiomis anglimis.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_183838-69824 ;
 Šiame darbe buvo tiriama Pb(II) jonų adsorbcija komercinėmis (Norit) aktyvintosiomis anglimis. Atliktas naudotų sorbentų fizikocheminių savybių tyrimas. Nustatyta, kad pasirinktos aktyvintosios anglys yra H tipo,... (more)
 Šiame darbe buvo tiriama Pb(II) jonų adsorbcija komercinėmis (Norit) aktyvintosiomis anglimis. Atliktas naudotų sorbentų fizikocheminių savybių tyrimas. Nustatyta, kad pasirinktos aktyvintosios anglys yra H tipo, turinčios bazinių arba bazinių ir rūgštinių grupių.
 In this work the adsorption of Pb(II) ions by commercial (Norit) activated carbons was investigated. The investigation of physicochemical properties of sorbents used in this work was carried out. It was determined that the activated carbons are of H – type with basic or basic as well as acidic groups.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Gefenienė, Audronė (Master’s thesis supervisor), Vinslovaitė, Aušra (Master’s thesis reviewer).
 Subjects/Keywords: Adsorbcija; Aktyvintosios anglys; Švino jonai; Adsorption; Activated carbon; Lead ions
 Saveikaitė, Neimantė. (2008). Pb(II) adsorbcija aktyvintosiomis anglimis . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_183838-69824 ;
 Saveikaitė, Neimantė. “Pb(II) adsorbcija aktyvintosiomis anglimis.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_183838-69824 ;.
 Saveikaitė, Neimantė. “Pb(II) adsorbcija aktyvintosiomis anglimis.” 2008. Web. 19 Sep 2019.
 Saveikaitė, Neimantė. Pb(II) adsorbcija aktyvintosiomis anglimis. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_183838-69824 ;.
 Saveikaitė, Neimantė. Pb(II) adsorbcija aktyvintosiomis anglimis. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_183838-69824 ;
 11. Astrauskaitė, Sigutė. Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms.
 Degree: Master, Biochemistry, 2008, Vilnius Pedagogical University
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184201-56542 ;
 Ribonukleazės vaidina svarbu vaidmenį genų ekspresijos kontrolėje keisdamos specifinių mRNR stabilumą. Ląstelės-šeimininkės RNazė E yra viena svarbiausių nukleazių, kuri dalyvauja fago T4 mRNR degradacijoje ir... (more)
 Ribonukleazės vaidina svarbu vaidmenį genų ekspresijos kontrolėje keisdamos specifinių mRNR stabilumą. Ląstelės-šeimininkės RNazė E yra viena svarbiausių nukleazių, kuri dalyvauja fago T4 mRNR degradacijoje ir veikia viso infekcinio ciklo metu. Tačiau ne tik E. coli RNazės, bet ir paties fago koduojama endoribonukleazė RegB reguliuoja mRNR kiekį ląstelėje. T4 RegB yra sekai specifinė nukleazė, kuri efektyviai kerpa ankstyvąsias mRNR dažniausiai ties Šaino-Dalgarno (SD) sekos motyvo GGAG, kartais GGAU, viduriu, ir tokiu būdu išjungia ankstyvųjų mRNR transliaciją. Kai kurie RegB skelti transkriptai tampa jautrūs antriniai hidrolizei. Naujausi tyrimų duomenys parodė, kad RegB hidrolizuotas T4 mRNR antrinių kirpimų vietose skelia RNazės G ir E. T4 giminingas fagas RB69 turi geną motB, tačiau svarbios aminorūgštys skiriasi nuo T4 aminorūgščių. Šio darbo tikslas buvo išsiaiškinti ar bakteriofago RB69 tarpgeninėje srityje priešais geną motB pasireiškia pirminiai, RegB indukuoti, bei nuo RegB priklausomi antriniai skėlimai ir kuri E. coli RNazė vaidina esminį vaidmenį antrinių skėlimų procese. Darbo rezultatai parodė, kad RegB nukleazė kerpa motB geną ties GGAG motyvo viduriu. Be to, RegB skelti transkriptai tampa jautrūs antriniai hidrolizei AU turtingoje srityje iš karto už GGAG motyvo. Panaudojus izogeninius E. coli laukinio tipo bei mutantines E ir G endoribonukleazes koduojančius kamienus, nustatyta, kad antrinius taikinius RegB perskeltame fago RB69 motB transkripte kerpa E.... [toliau žr. visą tekstą]
 Ribonucleases play important role in the control of gene expression by altering the stability of specific mRNAs. Escherichia coli endoribonuclease E appears to be a major determinant of mRNA turnover throughout T4 infection, but in addition the T4 encodes its own endoribonuclease. The T4 RegB nuclease is a sequence-specific endoribonuclease, which cleaves in the middle of the GGAG motif or, in a few cases, in the GGAU, with the strong bias towards intergenic sites, and in many cases towards Shine-Dalgarno sequences. Some RegB-processed T4 transcripts were previously shown to be susceptible to further degradation at secondary sites. Recent analysis revealed that secondary cuts within RegB-processed T4 mRNAs were generated by RNases G and E. Bacteriophage RB69, the relative of T4-related phages, harbor the regB gene; however the RegB enzyme shows a substantial amino acid divergence from its T4 counterpart. The aim of this work was to identify whether the RB69 mRNA from the region upstream of gene motB undergoes the cleavage by the combined action of RegB and E. coli endoribonucleases, and to investigate the nature of secondary cuts. The results of this work show that RegB nuclease cleaves the motB transcript in the middle of GGAG motif. Moreover, RegB-cleaved mRNA is susceptible to the secondary processing within AU rich region just downstream of the GGAG. Using E. coli mutant strains deficient in RNase G and RNase E, or both of them, we show that nucleolytic events at the... [to full text]
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Zajančkauskaitė, Aurelija (Master’s thesis supervisor), Miliukienė, Valė (Master’s thesis reviewer).
 Subjects/Keywords: RB69; RegB; Nukleaze G; RB69; RegB; Nukleaze G
 Astrauskaitė, Sigutė. (2008). Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184201-56542 ;
 Astrauskaitė, Sigutė. “Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184201-56542 ;.
 Astrauskaitė, Sigutė. “Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms.” 2008. Web. 19 Sep 2019.
 Astrauskaitė, Sigutė. Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184201-56542 ;.
 Astrauskaitė, Sigutė. Bakteriofago rb69 transkriptų skilimas veikiant Šio Fago ir e. Coli endoribonukleazėms. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184201-56542 ;
 12. Antul, Galina. Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184349-80220 ;
 Zn redukcija iš šarminių elektrolitų vyksta per tarpinę oksido/hidroksido fazės susidarymo stadiją. Dalis oksidinių junginių gali būti neredukuojami, todėl terptis į metalinę dangą. Impulsinės elektrolizės... (more)
 Zn redukcija iš šarminių elektrolitų vyksta per tarpinę oksido/hidroksido fazės susidarymo stadiją. Dalis oksidinių junginių gali būti neredukuojami, todėl terptis į metalinę dangą. Impulsinės elektrolizės taikymas Zn dangų nusodinimui yra vienas iš būdų modifikuoti metalo struktūrą ir tuo pačiu pagerinti dangų korozinį atsparumą. Nemetalinių intarpų kiekis impulsine elektrolize nusodintose Zn ir jo lydinių dangose nėra tyrinėtas. Nemetalinių intarpų kiekis buvo nustatytas dangų anodinio tirpinimo Na2SO4 + Na2 EDTA tirpale ir Rentgeno fotoelektronų spektroskopijos metodais. Nustatyta, kad oksidinių intarpų kiekis impulsine elektrolize nusodintose Zn ir Zn-Ni dangose buvo didesnis, lyginant su nuolatinės srovės dangomis, taip pat į Zn dangas, lyginant su lydinių, įsiterpia daugiau oksidinių junginių. Nuolatine srove nusodintose Zn dangose ZnO kiekis yra didesnis už Zn(OH)2, tačiau impulsinė elektrolizės taikymas didina hidroksido kiekį dangoje. Nuolatine srove nusodintose Zn-Ni dangose oksido ir hidroksido intarpų kiekiai yra panašūs, tuo tarpu impulsinė elektrolizė ženkliai padidina hidroksido kiekį dangoje.
 Electrodeposition process of Zn in alkaline solutions occurs through oxide/hydroxide phase formation, which under certain conditions could not be totally reduced and therefore formation of non metallic (oxide/hydroxide) inclusions can take place. Pulse plating of metal coatings is widely used as the method for metal structure modification in order to enhance the corrosion resistance of Zn and Zn alloy coatings, however the amount of inclusions in pulse plated Zn and Zn-Ni coatings was not investigated up to date. The amount of non-metallic inclusions was determined from anodic dissolution curves, obtained in Na2SO4 + Na2 EDTA solution and from X-ray photoelectron analysis of the sample surfaces after Ar ion sputtering. The amount of the oxide phase in Zn and Zn-Ni coatings was determined to be higher in the pulse plated coatings with respect to direct current ones, while in Zn coatings this amount was also higher with respect to the alloy. The amount of ZnO in the inclusions of direct current plated Zn coatings is higher than that of Zn(OH)2, however, application of pulse deposition increases the amount of the latter compound. Oxide and hydroxide amounts in the direct current plated Zn-Ni coatings are similar, meanwhile, the pulse plating increases significantly the amount of hydroxide phase.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Ramanauskas, Rimantas (Master’s thesis supervisor), Kapočius, Vidmantas (Master’s thesis reviewer).
 Subjects/Keywords: Cinko dangos; Impulsinė elektrolizė; Nemetaliniai intarpai; Pulse plated; Zinc coating; Non-metalic inclusion
 Antul, Galina. (2008). Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184349-80220 ;
 Antul, Galina. “Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184349-80220 ;.
 Antul, Galina. “Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove.” 2008. Web. 19 Sep 2019.
 Antul, Galina. Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184349-80220 ;.
 Antul, Galina. Nemetalinių intarpų nustatymas nusodinant cinką ir jo lydinius impulsine elektros srove. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_184349-80220 ;
 13. Ūselytė, Gintarė. Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_222847-13165 ;
 Darbe tiriamas magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių anodinis tirpimas, bei antikorozinės savybės. Magnetroniniu plazminiu būdu buvo suformuotos dangos su skirtingu cirkonio kiekiu (t.y. 95%,... (more)
 Darbe tiriamas magnetroniniu plazminiu būdu suformuotų Mg-Al-Zr lydinių anodinis tirpimas, bei antikorozinės savybės. Magnetroniniu plazminiu būdu buvo suformuotos dangos su skirtingu cirkonio kiekiu (t.y. 95%, 90,4%, 76,2%, 71% ir 67%). Dangos formuojamos ant stiklo paviršiaus. Voltamperiniais ir elektrocheminio impedanso metodais ištirtas Mg-Al-Zr lydinių anodinis atsparumas ir korozinė elgsena 0.1 M (NH4)3BO3 + 0.1 M NaCl tirpale, kurio pH 8,5. MP lydinių korozinis atsparumas didėja, didinant Zr koncentraciją lydinyje. Taip pat lydiniai, kuriuose didesnė Mg koncentracija, bet mažesnė Zr aktyviai anodiškai tirpsta. Atominės jėgos mikroskopo metodu (AJM) nustatyta lydinių morfologija, dangos su didesne Zr koncentracija charakterizuojamos mažesniais kristalitų dydžiais. Aptartos MP metodo pritaikymo galimybės.
 The goal of this work was to study anodic dissolution and anticorrosion properties of Mg-Al-Zr alloys formed by magnetron sputtering. Magnetron sputtering technique was applied to deposit Mg-Al-Zr alloys with different amount of Zr, on glass substrates. Anodic dissolution and anticorrosive stability of the sputtered alloys were studied by voltammetric and electrochemical impedance spectroscopy methods in 0.1 M (NH4)3BO3 + 0.1 M NaCl solution (pH 8,5). EIS and voltammetric measurements indicated a lesser anodic dissolution and a superior anticorrosive resistance in Mg-Al-Zr alloys with higher Zr concentration. Atomic force microscopy demonstrated (AFM) that by increasing amount of Zr in sputtered samples the grain size decrease.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Jūzeliūnas, Eimutis (Master’s thesis supervisor), Šalkus, Bronius (Master’s thesis reviewer).
 Subjects/Keywords: Magnetroninis plazminis; Lydiniai; EIS; AFM; Magnetron sputtering; Alloy; EIS; AJM
 Ūselytė, Gintarė. (2008). Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_222847-13165 ;
 Ūselytė, Gintarė. “Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_222847-13165 ;.
 Ūselytė, Gintarė. “Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas.” 2008. Web. 19 Sep 2019.
 Ūselytė, Gintarė. Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_222847-13165 ;.
 Ūselytė, Gintarė. Magnetroniniu plazminiu būdu suformuotų Mg - Al - Zr lydinių paviršiaus anodinio tirpimo tyrimas. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_222847-13165 ;
 14. Baronaitė, Sandra. Vario (II) ir chromo (VI) jonų pašalinimas metaline geležimi iš vandeninių tirpalų.
 Baronaitė, Sandra. “Vario (II) ir chromo (VI) jonų pašalinimas metaline geležimi iš vandeninių tirpalų.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_122147-11310 ;.
 Baronaitė, Sandra. “Vario (II) ir chromo (VI) jonų pašalinimas metaline geležimi iš vandeninių tirpalų.” 2009. Web. 19 Sep 2019.
 Baronaitė, Sandra. Vario (II) ir chromo (VI) jonų pašalinimas metaline geležimi iš vandeninių tirpalų. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_122147-11310 ;.
 15. Griškalauskaitė, Jolanta. Polianilino darinių tyrimas ir panaudojimas askorbo rūgšties jutikliuose.
 Griškalauskaitė, Jolanta. “Polianilino darinių tyrimas ir panaudojimas askorbo rūgšties jutikliuose.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130203-74269 ;.
 Griškalauskaitė, Jolanta. “Polianilino darinių tyrimas ir panaudojimas askorbo rūgšties jutikliuose.” 2009. Web. 19 Sep 2019.
 Griškalauskaitė J. Polianilino darinių tyrimas ir panaudojimas askorbo rūgšties jutikliuose. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130203-74269 ;.
 16. Petrušienė, Kristina. Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130929-58794 ;
 Šiame darbe buvo tiriamas bendrojo azoto ir bendrojo fosforo šalinimas jonitais iš nuotekų po biologinio valymo. Atlikus preliminarius sorbcijos tyrimus statinėmis sąlygomis buvo atrinkti efektyviausiai... (more)
 Šiame darbe buvo tiriamas bendrojo azoto ir bendrojo fosforo šalinimas jonitais iš nuotekų po biologinio valymo. Atlikus preliminarius sorbcijos tyrimus statinėmis sąlygomis buvo atrinkti efektyviausiai bendrąjį azotą ir bendrąjį fosforą šalinantys sorbentai. Tolimesnis biologiškai išvalytų nuotekų valymas buvo atliekamas dinaminėmis sąlygomis naudojant stipriai rūgštinį katijonitą KU-2-8 ir stipriai bazinį anijonitą AB-17-8. Tyrimai buvo atlikti naudojant dviejų jonitų kolonėlių ir keturių kolonėlių sistemas su tuo pačiu jonitų kiekiu ir nustatyta, kad keturių kolonėlių sistema veikia efektyviau. Taikant jonų mainų sorbcijos metodą bendrojo azoto koncentraciją biologiškai valytose nuotekose galima sumažinti 50 – 80 %, o bendrojo fosforo koncentracija jonitais išvalytose nuotekose mažesnė nei 0,01 mg/l. Vienu tūriu jonito galima išvalyti iki 80 tūrių biologiškai valytų nuotekų. Jonituose sulaikyto bendrojo azoto ir bendrojo fosforo išgavai buvo naudojami 1 M HNO3 arba 1 M HCl bei 1 M KOH tirpalai. Didžiausia bendrojo azoto ir bendrojo fosforo koncentracija yra pirmose eliuato frakcijose. Katijonitu KU-2-8 sumažinama bendrojo azoto koncentracija nuotekose, o anijonitu AB-17-8 – ir bendrojo fosforo, ir bendrojo azoto koncentracija.
 The removal of total nitrogen and total phosphorus from biologically treated wastewater has been investigated. The sorbents with highest sorption capacity for the removal of total nitrogen and total phosphorus have been selected after the preliminary experiments under static conditions. The tertiary treatment of biologically treated wastewater has been carried out under dynamic conditions by strong acid KU-2-8 cation exchanger and strong base AB-17-8 anion exchanger. The investigation was carried out with the same amount of ion exchangers using the systems consisting of two or four columns. It was determined that the system consisting of four columns is more effective when compared to the system with two columns. Using the ion exchange method the concentration of total nitrogen can be diminished by 50-80 % whereas the concentration of total phosphorus in wastewater was lower than 0,01 mg/L. 80 bed volumes of biologically treated wastewater can be treated by one volume of ion exchanger. For the elution of total nitrogen and total phosphorus the solutions of 1 M HNO3 or 1 M HCl as well as 1M KOH were used. The highest concentration of total nitrogen and total phosphorus was obtained in the first fractions of eluate. The concentration of total nitrogen can be diminished by strong acid KU-2-8 cation exchanger and the concentration of total phosphorus as well as total nitrogen − by means of strong base AB-17-8 anion exchanger.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Gefenienė, Audronė (Master’s thesis supervisor), Vilkauskaitė, Rasa (Master’s thesis reviewer).
 Subjects/Keywords: Bendrasis azotas; Bendrasis fosforas; Nuotekos; Jonitai; Jonų mainai; Total nitrogen; Total phosphorus; Wastewater; Ion exchangers; Ion exchange
 Petrušienė, Kristina. (2009). Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130929-58794 ;
 Petrušienė, Kristina. “Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130929-58794 ;.
 Petrušienė, Kristina. “Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais.” 2009. Web. 19 Sep 2019.
 Petrušienė, Kristina. Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130929-58794 ;.
 Petrušienė, Kristina. Bendrojo azoto ir bendrojo fosforo šalinimas iš biologiškai valytų nuotekų jonitais. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_130929-58794 ;
 17. Janušauskienė, Lina. Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_133400-53120 ;
 Šiame darbe buvo tiriama chromo kompleksinio dažiklio Lanasyn Navy M-DNL adsorbcija nejoniniu polimeriniu sorbentu Macronet MN-200 ir presuotomis aktyvintosiomis anglimis Norit RB 0.8 CC statinėmis... (more)
 Šiame darbe buvo tiriama chromo kompleksinio dažiklio Lanasyn Navy M-DNL adsorbcija nejoniniu polimeriniu sorbentu Macronet MN-200 ir presuotomis aktyvintosiomis anglimis Norit RB 0.8 CC statinėmis ir dinaminėmis sąlygomis. Nustatyta adsorbento prigimties ir tirpalo pH įtaka sorbcijai. Nejoninis polimerinis sorbentas Macronet MN-200 pasižymi didele sorbcine geba statinėmis ir dinaminėmis sąlygomis ir gali pašalinti iki 92-93 % dažiklio iš tirpalo, sorbcijai palankesnė rūgštinė terpė (pH 2). Aktyvintųjų anglių sorbcinė geba yra mažesnė, statinėmis sąlygomis galima pašalinti apie 68 % dažiklio, o dinaminėmis sąlygomis sorbcija yra efektyvi tik proceso pradžioje. Chromo kompleksinio dažiklio desorbcijai buvo naudojami įvairūs eliuentai: 1 ir 2 % anijoninės PAM, 2 M KSCN, 1 M NaOH, 1 M HCl tirpalai, metanolis (99 %), etanolis (96,4 %) ir 2-propanolis (99,5 %). Nustatyta, kad labiausiai tinkantys eliuentai dažiklio desorbcijai statinėmis ir dinaminėmis sąlygomis iš nejoninio polimerinio sorbento yra etanolis ir metanolis. Dažiklio dalinė išgava iš aktyvintųjų anglių statinėmis sąlygomis galima naudojant 1 ir 2 % APAM tirpalus, tačiau dinaminėmis sąlygomis desorbcija neefektyvi. Polimerinio sorbento sorbcinė geba po regeneravimo alkoholiais statinėmis sąlygomis sumažėjo 7-10 %, tuo tarpu aktyvintųjų anglių sorbcinė geba jas regeneravus APAM tirpalais ar metanoliu nesumažėjo ir netgi išaugo 11-17 %.
 In this work the adsorption of chromium complex dye Lanasyn Navy M-DNL by nonionic polymeric sorbent Macronet MN-200 as well as by extruded activated carbon Norit RB 0.8 CC has been investigated under static and dynamic conditions. The effect of the adsorbent nature and solution pH has been determined. Nonionic polymeric sorbent Macronet MN-200 has a high sorption capacity and is able to remove 92-93 % of dye from the solution with the preferable sorption from acidic medium (pH 2). The sorption capacity of activated carbon is lower, it is able to remove about 68 % of dye under static conditions but the sorption under dynamic conditions is efficient only at the beginning of the process. Various eluents such as the solutions of 1-2 % anionic surfactant, 2 M KSCN, 1 M NaOH, 1 M HCl, methanol (99 %), ethanol (96,4 %), and 2-propanol (99,5 %) were used for the desorption of chromium complex dye. It was determined that the ethanol as well as the methanol are the most suitable eluents for desorption of dye from nonionic polymeric sorbent under static and dynamic conditions. The partial elution of dye from activated carbon can be achieved using the solutions of 1-2 % anionic surfactant, although desorption of dye under dynamic conditions is not effective. The sorption capacity of polymeric sorbent under static conditions was decreased by 7-10 % after the regeneration with alcohols. Whereas the sorption capacity of activated carbon after the regeneration was not decreased and even was... [to full text]
 Subjects/Keywords: Adsorbcija; Desorbcija; Polimerinis sorbentas; Aktyvintosios anglys; Chromo kompleksinis dažiklis; Adsorption; Desorption; Polymeric sorbent; Activated carbon; Chromium complex dye
 Janušauskienė, Lina. (2009). Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_133400-53120 ;
 Janušauskienė, Lina. “Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_133400-53120 ;.
 Janušauskienė, Lina. “Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse.” 2009. Web. 19 Sep 2019.
 Janušauskienė, Lina. Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_133400-53120 ;.
 Janušauskienė, Lina. Chromo kompleksinio dažiklio adsorbcija ir desorbcija nejoniniame polimeriniame sorbente ir aktyvintosiose anglyse. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_133400-53120 ;
 18. Jarašienė, Rasa. Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174538-38573 ;
 Mikromicetai yra labai įvairi, gyvybinga, aktyvi, įvairiomis veiklos galiomis pasižyminti mikroorganizmų grupė, gebanti aktyviai sintetinti ir išskirti įvairios cheminės prigimties metabolitus. Toksikologiniu ir cheminiu atžvilgiu... (more)
 Mikromicetai yra labai įvairi, gyvybinga, aktyvi, įvairiomis veiklos galiomis pasižyminti mikroorganizmų grupė, gebanti aktyviai sintetinti ir išskirti įvairios cheminės prigimties metabolitus. Toksikologiniu ir cheminiu atžvilgiu tai yra heterogeniška medžiagų grupė, kurią sunku klasifikuoti ir apibūdinti. Mikotoksinai aptinkami tiek gyvulių pašare, tiek ir žmonių maisto produktuose. Jie sukelia įvairius žmogaus bei gyvūnų sveikatos sutrikimus. Toksinis šių junginių aktyvumas siejamas su jų chemine struktūra. Darbas skirtas mikotoksino deoksinivalenolio toksinio poveikio tyrimui, panaudojant dvi modelines tyrimo sistemas - laboratorinius gyvūnus (in vivo) ir ląstelių kultūras (in vitro). Deoksinivalenolis - dažniausiai Fusarium genties mikromicetų produkuojamas metabolitas, savo struktūroje turintis epoksido grupę, kuri, manoma, ir lemia jo toksiškumą. Panaudojus laboratorinius gyvūnus (peles), kaip tradicinę toksikologinių tyrimų sistemą in vivo, nustatėme, kad deoksinivalenolis po 14-kos parų kasdienio 15 μg/kg koncentracijos poveikio nesukėlė pastebimų organizmo pakitimų, gyvūnai buvo žvalūs, smalsūs, jų svoris augo. Tačiau po išsamesnių tyrimų buvo registruoti kraujo pakitimai, IgA koncentracijos padidėjimas. Panaudojus kitą modelinę toksinio poveikio tyrimo sitemą - ląstelių analizę kultūroje in vitro - nustatėme, kad labai mažos (5 ir 10 μg/ml) tiriamo mikotoksino koncentracijos sukėlė ląstelių pažeidimus. Šiame darbe deoksinivalenolio toksiškumo tyrimui mes... [toliau žr. visą tekstą]
 Our study is devoted to the analysis of mycotoxin deoxinyvalenol toxicity and comparison of toxicity tests in the model systems in vivo and in vitro. It is known that mycotoxin-producing mold species grow on a wide range of substrates under a wide range of environmental conditions, they are pharmacologically active mold metabolites characterized by vertebrate toxicity. They fall into several chemically unrelated classes, are produced in a strain-specific way and vary in specificity and potency for their target organisms, organs or cells. We have used two model systems for the analysis of deoxinyvalenol effect. One of them is laboratory animal (mice) study or test system in vivo. It is as a traditional method for the evaluation of the toxic substances. We have found that animal diet containing 15 μg/kg deoxynivalenol during short-term (14 days) repeated toxicity test didn‘t influence noticeably animal health. Such small concentration of tested mycotoxin did not appear to depress animals, they were alive and curious, animal weight didn‘t fall behind control. Howewer, at the end of experiment we have found the decrease of mice blood parameters and dramatic increase of Ig A concentration in blood serum. Another test system used in our study was cell culture or test system in vitro. We have used permanent cell lines and newly established primary tissue culture cell lines, derived from potential mycotoxin-target organs: renal and lung. The results presented in this study describe... [to full text]
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Bukelskienė, Virginija (Master’s thesis supervisor), Vitėnienė, Irena (Master’s thesis supervisor), Gefenas, Vladas (Master’s thesis reviewer).
 Subjects/Keywords: Deoksinivalenolis; Mikotoksinai; Mikromicetai; Deoxinyvalenol; Mycotoxin; Micromycetes
 Jarašienė, Rasa. (2008). Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174538-38573 ;
 Jarašienė, Rasa. “Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174538-38573 ;.
 Jarašienė, Rasa. “Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro.” 2008. Web. 19 Sep 2019.
 Jarašienė, Rasa. Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174538-38573 ;.
 Jarašienė, Rasa. Mikotoksino deoksinivalenolio toksinio poveikio tyrimas modelinėse sistemose in vivo ir in vitro. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_174538-38573 ;
 19. Kirkutė, Jolita. Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175512-64908 ;
 Chromo kompleksinių dažiklių: rūgštinio rudojo (1:1 ir 1:2 chromo kompleksai) ir rūgštinio mėlynojo (1:2 chromo kompleksas) sorbcija aktyvintąja anglimi, neutraliu sorbentu, anijonitu bei chelatiniu jonitu... (more)
 Chromo kompleksinių dažiklių: rūgštinio rudojo (1:1 ir 1:2 chromo kompleksai) ir rūgštinio mėlynojo (1:2 chromo kompleksas) sorbcija aktyvintąja anglimi, neutraliu sorbentu, anijonitu bei chelatiniu jonitu atlikta statinėmis sąlygomis, keičiant pradinio tirpalo koncentracijas, pH, temperatūrą bei sorbcijos trukmę. Pusiausvirosios sorbcijos eksperimentinės vertės ir apskaičiuoti Langmiuro ir Froindlicho teorinių sorbcijos izotermų paramertrų didžiausios vertės liudija, kad sorbcijai palankiausia tirpalo rūgšti terpė. Gautos sorbcijos kinetinės kreivės ir ištirtos pagal tris kinetikos modelius: pseudo-pirmojo laipsnio reakcijos greičio lygtį, pseudo-antrojo laipsnio reakcijos greičio lygtį ir vidinės difuzijos modelį. Nustatyta, kad sorbcijos kinetika vyksta pagal pseudo-antrojo laipsnio reakcijos lygtį ir yra kontroliuojama vidinės difuzijos procesų. Nustatyti sorbcijos proceso termodinaminiai parametrai H0, S0 ir G0 liudija apie spontanišką, egzoterminę sorbcijos aktyvintąja anglimi, anijonitu bei chelatiniu jonitu prigimtį.
 Sorption of two chromium complex dyes (1:1 and 1:2 chromium complex; 1:2 chromium comlex) and from model solutions onto an various types of sorbents was investigated in aqueous solution in a batch experiments with respect to initial solution concentration and pH, contact time, and temperature. The sorption capacity at equilibrium obtained experimental and estimated Langmuir and Freundlich isotherm parameters was demonstrate that acidic media was favourable for dye sorption. The pseudo-first-order, pseudo - second order kinetics models and the diffusion (intraparticle) model were used to describe the kinetics data, and the rate constants were evaluated. Kinetics of dye sorption is observed to confirm pseudo-second order rate expression. The activation energy, change of Gibbs free energy, enthalpy of sorption was also evaluated. The results indicate the sorption process onto activated carbon, anion exchanger and chelating sorbent was egzothermic, spontaneous.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Gefenienė, Audronė (Master’s thesis supervisor), Kaušpėdienė, Danutė (Master’s thesis supervisor), Kurienė, Almeda (Master’s thesis reviewer).
 Subjects/Keywords: Chromo kompleksinis dažiklis; Sorbcija; Aktyvintoji anglis; Jonitas; Chelatinis jonitas; Chromium complex dye; Sorption; Activated carbon; Ion exchanger; Chelating resin
 Kirkutė, Jolita. (2008). Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175512-64908 ;
 Kirkutė, Jolita. “Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis.” 2008. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175512-64908 ;.
 Kirkutė, Jolita. “Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis.” 2008. Web. 19 Sep 2019.
 Kirkutė, Jolita. Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2008. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175512-64908 ;.
 Kirkutė, Jolita. Chromo kompleksinių dažiklių sorbcija jonitais ir aktyvintosiomis anglimis. [Masters Thesis]. Vilnius Pedagogical University; 2008. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175512-64908 ;
 20. Marcinkevič, Renata. Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_123721-95394 ;
 Ypatingą pavojų aplinkai kelia beveik visi komerciniai halogeninti angliavandeniliai, ypač mažos molekulinės masės C1-C4 chlorinti alkanai ir alkenai, kurie plačiai vartojami kaip tirpikliai, riebalus šalinančios... (more)
 Ypatingą pavojų aplinkai kelia beveik visi komerciniai halogeninti angliavandeniliai, ypač mažos molekulinės masės C1-C4 chlorinti alkanai ir alkenai, kurie plačiai vartojami kaip tirpikliai, riebalus šalinančios medžiagos. Todėl buvo domėtasi naujais vandens valymo būdais, kur chlorintiems organiniams dariniams šalinti naudojama metalinė geležis ir jos atliekos. Tyrimo metu paaiškėjo, kad ruošiant geležį reakcijoms, dalis geležies yra prarandama. Dalis išvalytos ir aktyvuotos geležies taip pat išsieikvoja reakcijų su chlororganinėmis medžiagomis metu. Trichlormetano ir 1,1,2 – trichloretileno skaidymui metaline geležimi svarbi yra jų vandeninių tirpalų terpės pH, kadangi 1,1,2 – trichloretilenas geriausiai redukavosi esant pH 3,5, o trichlormetanas – pH 4. Šių vandeninių tirpalų terpių pH po apdorojimu metaline geležimi nepasikeitė. H+ jonai arba nedalyvavo reakcijoje arba jų nedidelis kiekis buvo reikalingas nuolatos aktyvuoti Fe paviršių. Chloro atomus turintys organiniai junginiai geriau šalinami iš tirpalo atvirame inde, kuomet deguonis iš oro lengvai difunduoja į valomą tirpalą. Numanoma, tai vyksta todėl, kad fotocheminių procesų metu skiriasi vienas aktyviausių laisvųjų radikalų - OH∙ hidroksido radikalas. Jis skatina arba chlorintų organinių junginių skilima pagal Fentono reakcijos mechanizmą, arba šių junginių oligomerizaciją. Trichlormetano vandeninio tirpalo ChDSK2Cr2O7 reikšmė po 9 eksperimento valandų lygi 35 mg O2/l, o 1,1,2 – trichloretileno apdoroto geležimi... [toliau žr. visą tekstą]
 A huge threat to the environment is done by almost all commercial halogen hydrocarbons, especially low mass C1-C4 alkans and alkens including chlorine atoms, which are widely used as solvents, agents eliminating fat. Due to this reason it was interested in new ways of water cleaning where metal iron was used to eliminate chlororganic compounds. Carrying out the research it was found out that preparing iron for the reactions a part of iron is lost. A part of cleaned and activated iron also wears out during the reactions with chlororganic substances. The pH environment of their hydrous solutions is important to dissociate threecholrmethan and 1,1,2–threechloroethylene with metal iron because 1,1,2-threecholrethylene revivified the most when pH was 3.5 and threechloromethan – pH 4. The pH environment of their hydrous solutions with metal iron didn’t change. Either H+ ions didn’t participate in the reaction or their small amount was necessary to constantly activate Fe surface. Organic compounds including chlorine atoms is better eliminated from the solution in an open dish when oxygen easily diffuse from the air into the cleaning solution. It is believed it happens so because during photochemical processes one of the most active free radicals – OH∙ hydroxide radical – dissolves. It stimulates either the fragmentation of chlororganic compounds according to Fenton’s mechanism of reaction or the oligomerisation of these compounds. The meaning of threechloromethan hydrous solution... [to full text]
 Advisors/Committee Members: Vitienienė, Irena (Master’s thesis supervisor), Gylienė, Ona (Master’s thesis supervisor), Gefenas, Vladas (Master’s thesis reviewer), Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member).
 Subjects/Keywords: Geležis; Trichlormetanas; Trichloretilenas; ChDS; BDS; Iron; Treechlormethane; Treechlorethylene; ChDS; BDS
 Marcinkevič, Renata. (2009). Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_123721-95394 ;
 Marcinkevič, Renata. “Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį.” 2009. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_123721-95394 ;.
 Marcinkevič, Renata. “Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį.” 2009. Web. 19 Sep 2019.
 Marcinkevič, Renata. Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2009. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_123721-95394 ;.
 Marcinkevič, Renata. Chloro atomus turinčių organinių junginių pašalinimas iš vandeninių tirpalų, naudojant metalinę geležį. [Masters Thesis]. Vilnius Pedagogical University; 2009. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2009~D_20090629_123721-95394 ;
 21. Barbaravičiūtė, Virginija. Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173636-54335 ;
 ► The aim of present work was to study corrosion properties of magnetron sputtered Mg–Al alloys and characterize semiconductor properties of the surface layers developed during... (more)
 ▼ The aim of present work was to study corrosion properties of magnetron sputtered Mg–Al alloys and characterize semiconductor properties of the surface layers developed during corrosion. Atomic force microscopy (AFM) demonstrated that sputtered alloys had a smaller grain size and a smoother surface. Corrosion and electrochemical behaviour of the alloys was studied in 0,1M (NH4)3BO3 + 0,1M NaCl (pH = 8,4) solution. Sputtered films of Al-Mg and Al had a superior resistance to pitting corrosion when compared to cast counterparts. The corrosion resistance of sputtered samples increased with decrease in Mg content. The Mott – Schottky plots of Al-Mg and pure Al electrodes showed a linear relationship between modified capacitance (C-2) on applied potential. It was concluded n – type semiconductivity for the layers on Al and p – type for Al-Mg alloys. Advisors/Committee Members: Barkauskas, Jurgis (Master’s degree committee chair), Juzeliūnas, Eimutis (Master’s thesis supervisor), Vitėnienė, Irena (Master’s degree committee member), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s thesis reviewer), Giraitis, Raimondas (Master’s degree committee member), Krotkienė, Giedrė (Master’s degree session secretary).
 Subjects/Keywords: EIS; AFM; Korozija; Magnetroniniai plazminiai lydiniai
 Barbaravičiūtė, V. (2006). Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173636-54335 ;
 Barbaravičiūtė, Virginija. “Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173636-54335 ;.
 Barbaravičiūtė, Virginija. “Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas.” 2006. Web. 19 Sep 2019.
 Barbaravičiūtė V. Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173636-54335 ;.
 Barbaravičiūtė V. Magnetroninių plazminių magnio lydinių elektrocheminis ir korozinis charakterizavimas. [Masters Thesis]. Vilnius Pedagogical University; 2006. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173636-54335 ;
 22. Benetytė, Kristina. Leucito susidarymas kaoline ir kristalizacija iš stiklų.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_202043-76292 ;
 ► Kali aluminium silikate mineral leucite is a component of odotic porcelain. Porcelain is used in stomatology, producing unnatural teeth and renewing tooth structure. Purpose of... (more)
 ▼ Kali aluminium silikate mineral leucite is a component of odotic porcelain. Porcelain is used in stomatology, producing unnatural teeth and renewing tooth structure. Purpose of this work was to get leucite by crystallizing modified alumosilicate glasses and by synthesizing kaolin in a high temperature. In synthesis of glasses were used these compounds: SiO2, AI2O3, K2CO3, CaCO3, TiO2, ZnO, Li2CO3, Na2CO3. Getting leucite from kaolin, as stock was used: kaolin, Al2(SO4)3, K2SO4. Crystallization of glasses was processed in 900 ̊C - 1100 ̊C and the time of exposition was from 2 till 15 hours. Advisors/Committee Members: Vitėnienė, Irena (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Gefenas, Vladas (Master’s degree committee member), Krotkienė, Giedrė (Master’s degree session secretary), Kudabienė, Gemutė (Master’s thesis supervisor), Barkauskas, Jurgis (Master’s degree committee chair), Giraitis, Raimondas (Master’s thesis supervisor).
 Subjects/Keywords: Leucitas; Stiklas; Glass; Kaolinas; Kaolin; Leocite
 Benetytė, Kristina. (2006). Leucito susidarymas kaoline ir kristalizacija iš stiklų . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_202043-76292 ;
 Benetytė, Kristina. “Leucito susidarymas kaoline ir kristalizacija iš stiklų.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_202043-76292 ;.
 Benetytė, Kristina. “Leucito susidarymas kaoline ir kristalizacija iš stiklų.” 2006. Web. 19 Sep 2019.
 Benetytė, Kristina. Leucito susidarymas kaoline ir kristalizacija iš stiklų. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_202043-76292 ;.
 Benetytė, Kristina. Leucito susidarymas kaoline ir kristalizacija iš stiklų. [Masters Thesis]. Vilnius Pedagogical University; 2006. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_202043-76292 ;
 23. Rakauskaitė, Jurgita. Vario aliuminatų susidarymo ypatumai.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173423-83768 ;
 ► Experiment was done in 2005–2006 years in the base of Vilnius pedagogical university in Chemistry institute. The title of this experiment is „Formation peculiarity of... (more)
 ▼ Experiment was done in 2005–2006 years in the base of Vilnius pedagogical university in Chemistry institute. The title of this experiment is „Formation peculiarity of copper aluminates“. The author of this experiment is Jurgita Rakauskaitė and the director of this experiment is doc. dr. Raimondas Giraitis. The aim of this work was to synthesize CuAlO2 and CuAl2O4 from compounds of certain copper, alunimium nitrates and sulfates, and to compare dependance of copper aluminates formation on time and temperature. Firstly, reagents were crushed into powder, pressed and heated, changing heating time and temperature. For the reseach were used these methods: microstructural analysis, differential thermal analysis (DTA), X – ray difractional (XRD) analysis and scanning electron microscopy (SEM). When all the reseaches were finished, these conclusions were made: CuAl2O4 from nitrates begins to form at 750 °C and CuAl2O4 from sulfates begins its crystalisation at 700 °C. When the temperature is higher than 950 °C, formation of CuAlO2 begins. The higher the temperature is, the less time the copper aluminates take to form. Copper aluminates, formed from solid phase, made small crystals and formed from liquid phase made big various shape crystals. Advisors/Committee Members: Giraitis, Raimondas (Master’s thesis supervisor), Vitėnienė, Irena (Master’s degree committee member), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s thesis reviewer), Barkauskas, Jurgis (Master’s degree committee chair).
 Subjects/Keywords: Formation; Aluminates; Aliuminatai; Susidarymas
 Rakauskaitė, Jurgita. (2006). Vario aliuminatų susidarymo ypatumai . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173423-83768 ;
 Rakauskaitė, Jurgita. “Vario aliuminatų susidarymo ypatumai.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173423-83768 ;.
 Rakauskaitė, Jurgita. “Vario aliuminatų susidarymo ypatumai.” 2006. Web. 19 Sep 2019.
 Rakauskaitė, Jurgita. Vario aliuminatų susidarymo ypatumai. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173423-83768 ;.
 Rakauskaitė, Jurgita. Vario aliuminatų susidarymo ypatumai. [Masters Thesis]. Vilnius Pedagogical University; 2006. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173423-83768 ;
 24. Radzevičiūtė, Dovilė. Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu.
 Degree: Master, Chemistry, 2007, Vilnius Pedagogical University
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_165919-79280 ;
 Tetraciklinų nustatymas piene atliktas efektyviąja skysčių chromatografija ir įteisintas remiantis ES išleista direktyva 2002/657/EB. Metodas atitinka visus kriterijus aprašytus šioje direktyvoje. Antibakterinių medžiagų likučiai iš... (more)
 Tetraciklinų nustatymas piene atliktas efektyviąja skysčių chromatografija ir įteisintas remiantis ES išleista direktyva 2002/657/EB. Metodas atitinka visus kriterijus aprašytus šioje direktyvoje. Antibakterinių medžiagų likučiai iš pieno ekstrahuojami Mcllvaine-EDTA buferiniu tirpalu, o po to valymas atliekamas naudojant OASIS HLB kietafazės ekstrakcijos kolonėles. Chromatografinėje kolonėlėje atskyrimas atliekamas naudojant 10 mM oksalo rūgšties vandeninio tirpalo ir ACN gradientinį režimą, tėkmės greitis 0,9 ml/min, 100 μl injekcija, bangos ilgis 355 nm ir optimali kolonėlės temperatūra (LiChroCART Superspher 60 RP C8 (250 x 4,6 mm, dalelių dydis 5 m)) – 30 °C. Visi rezultatai apskaičiuoti naudojant kompiuterinę duomenų apdorojimo programą “Interval”. Tetraciklinų išgavos nuo 86,20 % iki 107,19 %, o nustatymo ribos yra intervale nuo 26,7 μg/l iki 49,3 μg/l.
 Analysis of tetracycline compounds was performed using high performance liquid chromatography and validated according to EU commition decision 2002/657/EC. Method is compliant at all criteria described in the decision. Antibacterial material residues were extracted from milk with Mcllvaine-EDTA buffer followed by clean-up on OASIS HLB cartridges. Separation was performed using 10 mM oxalic acid/ACN gradient with flow rate 0.9 ml/min, 100 μl injection, detection at 355 nm and the optimal temperature of column (LiChroCART Superspher 60 RP C8 (250 x 4.6 mm, size of particles 5 m)) – 30 °C. All the results were evaluated statistically with “Interval” data processing program. Recoveries are at the range from 86.20 % to 107.19 %. The determination limits for tetracyclines were carried out from 26.7 μg/L to 49.3 μg/L in this study.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Petraitis, Julijonas (Master’s thesis supervisor), Gefenienė, Audronė (Master’s thesis supervisor), Giraitis, Raimondas (Master’s thesis reviewer).
 Subjects/Keywords: Tetraciklinai; Antibakterinės medžiagos; ESCh; Tetracycline; Antibacterial materials; HPLC
 Radzevičiūtė, Dovilė. (2007). Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_165919-79280 ;
 Radzevičiūtė, Dovilė. “Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu.” 2007. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_165919-79280 ;.
 Radzevičiūtė, Dovilė. “Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu.” 2007. Web. 19 Sep 2019.
 Radzevičiūtė, Dovilė. Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2007. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_165919-79280 ;.
 Radzevičiūtė, Dovilė. Antibakterinių medžiagų likučių nustatymas piene efektyviosios skysčių chromatografijos (ESCh) metodu. [Masters Thesis]. Vilnius Pedagogical University; 2007. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_165919-79280 ;
 25. Skilond, Jevgenija. Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_170617-23645 ;
 Šiame darbe tirta itrio aliuminio granato aliuminio oksido matricoje Y3Al5O12/Al2O3 formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties. Kaip kompleksuojantys reagentai buvo panaudoti: 1,2-etandiolis, citrinos rūgštis,... (more)
 Šiame darbe tirta itrio aliuminio granato aliuminio oksido matricoje Y3Al5O12/Al2O3 formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties. Kaip kompleksuojantys reagentai buvo panaudoti: 1,2-etandiolis, citrinos rūgštis, malono rūgštis, fumaro rūgštis ir EDTA. Zolių-gelių metodo pagalba pavyko susintetinti Y3Al5O12/Al2O3 keraminius kompozitus. Susintetintų junginių fazinė sudėtis įvertinta rentgeno spindulių difrakcinės analizės metodu. Nustatyta kad, 1200 °C temperatūroje susiformuoja dvifazis itrio aliuminio granatas aliuminio oksido matricoje Y3Al5O12/Al2O3. Iš IR spektrų matyti, kad naudojant zolių-gelių metodą galima gauti dvifazius homogeniškus Y3Al5O12/Al2O3 junginių bandinius. Naudojant DTA metodą, nustatyta žemiausia junginių sintezės temperatūra ~ 900 °C, kai kompleksuojantis reagentas yra 1,2-etandiolis. Sintetinant YAG/Al2O3 keraminius kompozitus zolių-gelių metodu, kaip kompleksuojantys reagentai labiausiai tinka : 1,2-etandiolis, citrinos rūgštis ir malono rūgštis.
 This work examines, YAG in alumina matrix formation dependence on complexing agents nature. Complexing agents were used as follows: 1, 2-etandiol, citric, malonic, fumaric acids and EDTA. Y3Al5O12/Al2O3 ceramic composites were successfully synthesized by a sol-gel method. Synthesized compounds phase composition was assessed using the method of X-ray diffraction analysis. It was identified that in 1200 °C temperature YAG in alumina matrix forms a single phase. Using IR analysis method was proved that it is possible to synthesized single phases homogeneous YAG in alumina matrix compounds aliquots using sol-gel method. When complexing agent is 1,2-etandiol, low synthesis temperature ~ 900°C was identified using differential thermo analysis method. Besides, synthesizing YAG/Al2O3 ceramic composites by the sol-gel method the suitable complexing agents are: 1,2-etandiol, citric and malonic acids.
 Advisors/Committee Members: Tumkevičius, Sigitas (Master’s degree committee chair), Krotkienė, Giedrė (Master’s degree session secretary), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Šalkus, Bronislovas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Giraitis, Raimondas (Master’s thesis supervisor), Šalkus, Bronislovas (Master’s thesis reviewer).
 Subjects/Keywords: YAG; Aliuminio; Oksido; Matrica; YAG; In; Alumina; Matrix
 Skilond, Jevgenija. (2007). Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_170617-23645 ;
 Skilond, Jevgenija. “Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties.” 2007. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_170617-23645 ;.
 Skilond, Jevgenija. “Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties.” 2007. Web. 19 Sep 2019.
 Skilond, Jevgenija. Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2007. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_170617-23645 ;.
 Skilond, Jevgenija. Itrio aliuminio granato aliuminio oksido matricoje formavimosi ypatumų priklausomybė nuo kompleksuojančio junginio prigimties. [Masters Thesis]. Vilnius Pedagogical University; 2007. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_170617-23645 ;
 26. Počepko, Božena. Nikelio volframato susidarymas ir redukcija.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_171132-67856 ;
 Šiame darbe NiWO4 buvo gautas iš nikelio ir volframo junginių. Tyrimo metodai – rentgenofazinė analizė ir diferencinė terminė analizė. Nustatyta, kad NiWO4 susidarymas iš amonioparavolframato... (more)
 Šiame darbe NiWO4 buvo gautas iš nikelio ir volframo junginių. Tyrimo metodai – rentgenofazinė analizė ir diferencinė terminė analizė. Nustatyta, kad NiWO4 susidarymas iš amonioparavolframato ir nikelio nitrato kristalhidrato mišinio vyksta 665 oC temperatūroje, iš nikelio ir volframo oksidų mišinio – 850 oC ir iš volframo rūgšties ir nikelio nitrato kristalhidrato mišinio esant 695 oC temperatūrai. Intermetalydinio junginio (Ni4W) gavimo iš volframo rūgšties ir nikelio nitrato kristalhidrato mišinių iškaitinimo ir redukcijos, esant 1000 oC temperatūrai, geriausi rezultatai buvo pasiekti, kai kaitinimo trukmė buvo ilgiausia, t.y. 8 val.
 In this work NiWO4 was obtain from nickel and tungsten compounds. Various experimental techniques have been used: rentgenofazinė analizė ir diferencinė terminė analizė. The results show that formation of NiWO4 from ammonium paratungstate and nickel nitrate crystalline compounds occur at 665 oC, the formation from nickel and tungstate oxide compound at 850 oC and tungstate acid and nickel nitrate crystalline at 695 oC. The best results of the derived of Ni4W from tungstate acid and nickel nitrate crystalline was obtained during heating at temperature 1000 oC for 8 hours.
 Subjects/Keywords: Nikelio volframato susidarymas; Gavimas; Nikelio volframato redukcija; Nikel Tungstate redukction; Nikel Tungstate formation; Obtain
 Počepko, Božena. (2007). Nikelio volframato susidarymas ir redukcija . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_171132-67856 ;
 Počepko, Božena. “Nikelio volframato susidarymas ir redukcija.” 2007. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_171132-67856 ;.
 Počepko, Božena. “Nikelio volframato susidarymas ir redukcija.” 2007. Web. 19 Sep 2019.
 Počepko, Božena. Nikelio volframato susidarymas ir redukcija. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2007. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_171132-67856 ;.
 Počepko, Božena. Nikelio volframato susidarymas ir redukcija. [Masters Thesis]. Vilnius Pedagogical University; 2007. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_171132-67856 ;
 27. Čepulytė, Simona. Pirimidinolių alkilintų darinių sintezė.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_183542-65729 ;
 ► In this work the alkylation of 2-ethylsulfanyl -5-methoxy-4(3H)-pyrimidinone with 4-substituted ω-bromoacetophenones, ethyl 2-bromoalkanoates and 1-bromomethyl-o-carborane was investigated. It was found that reaction of title compounds... (more)
 ▼ In this work the alkylation of 2-ethylsulfanyl -5-methoxy-4(3H)-pyrimidinone with 4-substituted ω-bromoacetophenones, ethyl 2-bromoalkanoates and 1-bromomethyl-o-carborane was investigated. It was found that reaction of title compounds in the presence of potassium carbonate in boiling acetonitrile yielded O-alkylated derivatives with small amount of N3- and N1-alkylation products. The proportion of O- and N-alkylated products varied depending on the nature of substituent in the 4th position of benzene ring. Alkylation of title compound with ethyl bromoethanoate led to mixture of O-, N3- and N1 alkylated derivatives, while the reaction with ethyl 2-bromopropanoate yielded only O-alkylated isomer. 2-Substituted 4-pyrimidinols with nido-carborane at the side chain were synthesized. The structure of synthesized compounds was confirmed by the data of IR, UV and 1H NMR spectra. Advisors/Committee Members: Šalkus, Bronislovas (Master’s degree committee member), Gefenas, Vladas (Master’s thesis supervisor), Malinauskas, Albertas (Master’s degree committee chair), Stankevičiūtė, Živilė (Master’s degree session secretary), Gefenienė, Audronė (Master’s degree committee member), Vitėnienė, Irena (Master’s thesis reviewer), Giraitis, Raimondas (Master’s degree committee member).
 Subjects/Keywords: Pirimidinoliai; Pyrimidinols; Alkylation; Alkilinimas; ω-bromacetophenones; ω-bromacetofenonai
 Čepulytė, Simona. (2005). Pirimidinolių alkilintų darinių sintezė . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_183542-65729 ;
 Čepulytė, Simona. “Pirimidinolių alkilintų darinių sintezė.” 2005. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_183542-65729 ;.
 Čepulytė, Simona. “Pirimidinolių alkilintų darinių sintezė.” 2005. Web. 19 Sep 2019.
 Čepulytė, Simona. Pirimidinolių alkilintų darinių sintezė. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2005. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_183542-65729 ;.
 Čepulytė, Simona. Pirimidinolių alkilintų darinių sintezė. [Masters Thesis]. Vilnius Pedagogical University; 2005. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2005~D_20050613_183542-65729 ;
 28. Lavrinovič, Ana. Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173729-95279 ;
 ► The sorption of nonionic surfactant oxyethylated alcohols Lutensol AO – 10 and Cu (II) ions on activated carbon AquaSorb HS has been investigated. The kinetic... (more)
 ▼ The sorption of nonionic surfactant oxyethylated alcohols Lutensol AO – 10 and Cu (II) ions on activated carbon AquaSorb HS has been investigated. The kinetic investigations have revealed that the sorption of nonionic surfactant was the sufficiently slow process and required 7 days to reach equilibrium. The equilibrium sorption of the Cu (II) ions was attained within 24 h. ... Advisors/Committee Members: Barkauskas, Jurgis (Master’s degree committee chair), Giraitis, Raimondas (Master’s degree committee member), Vitėnienė, Irena (Master’s degree committee member), Krotkienė, Giedrė (Master’s degree session secretary), Kudabienė, Gemutė (Master’s thesis reviewer), Gefenas, Vladas (Master’s degree committee member), Gefenienė, Audronė (Master’s thesis supervisor).
 Subjects/Keywords: Varis; Nonionic surfactant; Nejoninė paviršinio aktyvumo medžiaga; Sorption; Aktyvintoji anglis; Activated carbon; Copper; Sorbcija
 Lavrinovič, Ana. (2006). Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173729-95279 ;
 Lavrinovič, Ana. “Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173729-95279 ;.
 Lavrinovič, Ana. “Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi.” 2006. Web. 19 Sep 2019.
 Lavrinovič, Ana. Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173729-95279 ;.
 Lavrinovič, Ana. Nejoninės paviršinio aktyvumo medžiagos (Pam) ir vario (II) jonų sorbcija aktyvintąja anglimi. [Masters Thesis]. Vilnius Pedagogical University; 2006. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_173729-95279 ;
 29. Saulėnienė, Kristina. Inhibitorių poveikis plieno korozijos produktams betone.
 Saulėnienė, Kristina. “Inhibitorių poveikis plieno korozijos produktams betone.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174054-67210 ;.
 Saulėnienė, Kristina. “Inhibitorių poveikis plieno korozijos produktams betone.” 2006. Web. 19 Sep 2019.
 Saulėnienė, Kristina. Inhibitorių poveikis plieno korozijos produktams betone. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174054-67210 ;.
 30. Vaitiulionytė, Diana. Furo[2,3-d]pirimidinų sintezė ir savybės.
 URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174528-81935 ;
 ► We report herein on the results of N- and O-alkylation of 5-cyano-2-methylsulfanyl-4(3H)- pyrimidinone with 4-substituted ω-bromoacetophenones. Synthesized N-(phenacyl)-4- pyrimidinones and 4-(phenacyloxy)pyrimidines with suitable substituents in... (more)
 ▼ We report herein on the results of N- and O-alkylation of 5-cyano-2-methylsulfanyl-4(3H)- pyrimidinone with 4-substituted ω-bromoacetophenones. Synthesized N-(phenacyl)-4- pyrimidinones and 4-(phenacyloxy)pyrimidines with suitable substituents in pyrimidine ring are versatile synthons for the preparation of fused pyrimidine heterocycles. Chemical properties of new furo[2,3-d]pyrimidines were investigated. The structure of synthesized compounds was confirmed by data of 1H NMR, IR and UV spectra. Advisors/Committee Members: Krotkienė, Giedrė (Master’s degree session secretary), Stankevičienė, Ina (Master’s thesis reviewer), Gefenas, Vladas (Master’s thesis supervisor), Gefenas, Vladas (Master’s degree committee member), Giraitis, Raimondas (Master’s degree committee member), Barkauskas, Jurgis (Master’s degree committee chair), Vitėnienė, Irena (Master’s degree committee member).
 Subjects/Keywords: 4(3H)pirimidinonai; 3-d]pirimidinai; Ciklizacija; 4(3H)pirimidinones; Alkilinimas; Furo[2; 3-d]pirimidines
 Vaitiulionytė, Diana. (2006). Furo[2,3-d]pirimidinų sintezė ir savybės . (Masters Thesis). Vilnius Pedagogical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174528-81935 ;
 Vaitiulionytė, Diana. “Furo[2,3-d]pirimidinų sintezė ir savybės.” 2006. Masters Thesis, Vilnius Pedagogical University. Accessed September 19, 2019. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174528-81935 ;.
 Vaitiulionytė, Diana. “Furo[2,3-d]pirimidinų sintezė ir savybės.” 2006. Web. 19 Sep 2019.
 Vaitiulionytė, Diana. Furo[2,3-d]pirimidinų sintezė ir savybės. [Internet] [Masters thesis]. Vilnius Pedagogical University; 2006. [cited 2019 Sep 19]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174528-81935 ;.
 Vaitiulionytė, Diana. Furo[2,3-d]pirimidinų sintezė ir savybės. [Masters Thesis]. Vilnius Pedagogical University; 2006. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2006~D_20060613_174528-81935 ;