cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.19945173
title: DEVELOPMENT AND VALIDATION OF ANALYTICAL METHOD FOR PALM OIL DETERMINATION IN MICROCAPSULES PRODUCED BY COMPLEX COACERVATION

description: The microencapsulation of palm oil may be a mechanism for protecting and promoting the controlled release of its bioactive compounds. To optimize the microencapsulation process, it is necessary to accurately quantify the palm oil present both external and internal to the microcapsules. In this study, we developed and validated a spectrophotometric method to determine the microencapsulation efficiency of palm oil by complex coacervation. We used gelatin and gum arabic (1:1) as wall material in a 5% concentration (w/v) and palm oil in the same concentration. The coacervates were obtained at pH 4.0 ± 0.01, decanted for 24 h, frozen (−40 ºC), and lyophilized for 72 h. Morphological analyzes were then performed. We standardized the extraction of the external palm oil through five successive washes with an organic solvent. We then explored the best method for rupturing the microcapsules. After successive extractions with hexane, we determined the amount of palm oil contained in the microcapsules using a spectrophotometer. The proposed method was shown to be of low cost, fast, and easy to implement. In addition, in the validation step, we confirmed the method to be safe and reliable, as it proved to be specific, accurate, precise, and robust.
DOI: 10.6084/m9.figshare.19945174
title: USE OF A LOW-COST TEMPLATE-FREE ZSM-5 FOR ATMOSPHERIC PETROLEUM RESIDUE PYROLYSIS

description: To understand the physicochemical properties and catalytic activity during the pyrolysis of atmospheric petroleum residue, a template-free ZSM-5 zeolite was synthesized using a direct method without additional seeds or an organic structure director and compared with conventionally synthesized ZSM-5. The crystallinities of the two zeolites were evaluated by XRD and FTIR and were quite similar; however, structural analyses using SEM and argon physisorption revealed that the zeolites diverged in particle diameter and in the external surface area of the micropores. The synthesis procedure without a template incorporated additional aluminum into the crystalline network, according to ICP-AES and TPD NH3 experiments. The catalytic pyrolysis performed over the template-free ZSM-5 generated results comparable to those for pyrolysis performed over the conventional ZSM-5 according to its hydrocarbon distribution. The selectivity to aromatics compounds was exactly the same for both ZSM-5 zeolites, and these values stand out compared to thermal pyrolysis. The template-free ZSM-5 produced 20% of light hydrocarbons (C4-C6), where such compounds are olefins and paraffins of great interest to the petrochemical industry. Therefore, template-free ZSM-5 is promising for industrial use due to its lowered synthesis time, low-cost and significant distribution to light hydrocarbons.
DOI: 10.6084/m9.figshare.19945174.v1
title: USE OF A LOW-COST TEMPLATE-FREE ZSM-5 FOR ATMOSPHERIC PETROLEUM RESIDUE PYROLYSIS

description: To understand the physicochemical properties and catalytic activity during the pyrolysis of atmospheric petroleum residue, a template-free ZSM-5 zeolite was synthesized using a direct method without additional seeds or an organic structure director and compared with conventionally synthesized ZSM-5. The crystallinities of the two zeolites were evaluated by XRD and FTIR and were quite similar; however, structural analyses using SEM and argon physisorption revealed that the zeolites diverged in particle diameter and in the external surface area of the micropores. The synthesis procedure without a template incorporated additional aluminum into the crystalline network, according to ICP-AES and TPD NH3 experiments. The catalytic pyrolysis performed over the template-free ZSM-5 generated results comparable to those for pyrolysis performed over the conventional ZSM-5 according to its hydrocarbon distribution. The selectivity to aromatics compounds was exactly the same for both ZSM-5 zeolites, and these values stand out compared to thermal pyrolysis. The template-free ZSM-5 produced 20% of light hydrocarbons (C4-C6), where such compounds are olefins and paraffins of great interest to the petrochemical industry. Therefore, template-free ZSM-5 is promising for industrial use due to its lowered synthesis time, low-cost and significant distribution to light hydrocarbons.
DOI: 10.6084/m9.figshare.19945177
title: BUILDING THE LIQUID-VAPOUR EQUILIBRIUM CURVE THROUGH A CUBIC EQUATION OF STATE: USE OF EXCEL FOR TEACHING PHYSICAL-CHEMISTRY

description: Cubic equations of state are able to predict the liquid-vapour coexistence curve of volatile substances. However, this property is rarely used to teach Physical Chemistry because solving the resulting equations require numerical technics and many mathematical operations. In this report was shown how the interactive method for finding the root of an equation can be applied with the Excel to determine the vapour pressure of the liquid, as well as the molar volumes of the gas and liquid phases. The generated points was used to build the curves of phase transition in the P ´ V and P ´ T graphics.
DOI: 10.6084/m9.figshare.19945177.v1
title: BUILDING THE LIQUID-VAPOUR EQUILIBRIUM CURVE THROUGH A CUBIC EQUATION OF STATE: USE OF EXCEL FOR TEACHING PHYSICAL-CHEMISTRY

description: Cubic equations of state are able to predict the liquid-vapour coexistence curve of volatile substances. However, this property is rarely used to teach Physical Chemistry because solving the resulting equations require numerical technics and many mathematical operations. In this report was shown how the interactive method for finding the root of an equation can be applied with the Excel to determine the vapour pressure of the liquid, as well as the molar volumes of the gas and liquid phases. The generated points was used to build the curves of phase transition in the P ´ V and P ´ T graphics.
DOI: 10.6084/m9.figshare.19945179
title: COMPARISON OF DENSITY FUNCTIONAL IN THE STUDY OF ELECTRONIC PROPERTIES OF ARTEMISININ DERIVATIVES

description: The present paper demonstrates the application of functional GGA hybrids, with long-range corrections, for the calculation of the electronic properties of artemisinin and two of its derivatives - artemether e artesunate. Due to the relatively large amount of data obtained, the statistical method of Principal Component Analysis was employed. The functionals of the WB97 family are observed to be the most appropriate for the determining of reactivity indexes, which are the principal descriptors that, probably, are associated with the antimalarial and anticancer properties of this group of molecules. In addition, it was also observed that all the functionals obtained satisfactorily describe the geometric properties of the studied.
DOI: 10.5281/zenodo.6600574
title: [IO Islamic 837] Maâthir-alumarâ, The Second Edition of the Great Biographical Dictionary of the Famous Amîrs, Nawwâbs, and other Noblemen who Lived

description: <strong> Another Copy of the Maâthir-alumarâ.</strong> <strong>This manuscript is now IO Islamic 837 in the India Office collections.</strong> <strong>[metadata:</strong> <strong>Hermann Ethé</strong><strong><em>, </em></strong><strong><em>Catalogue of Persian Manuscripts in the Library of the India Office,</em></strong> <strong>2 vols. (Oxford: India Office, 1903): volume 1,</strong> <strong>number 628 here with notations and hyperlinks]</strong>. <br> 628 Another copy of the same. This copy of the <em>second </em>or revised and enlarged edition is the usual one, beginning on fol.1<sup>b </sup>with the second editor׳s preface : ستايش بيكران و نيايش بی اندازه الخ , after which follow: The preface of the <em>first </em>editor, Faḳîr Ghulâm 'Alî, on fol. 3<sup>b</sup>, beginning: حمد شاهنشاهى الخ . The author׳s life, on fol. 4<sup>a</sup>, and a detailed index of the whole work, on ff. 9<sup>b</sup>-12<sup>b</sup>. Beginning of the dictionary with Ism’îlbeg Dûldî (see No. 626), on fol. 12<sup>b</sup>. The right order of ff. 206-221 is: 206, 208, 207, 209-212, 214, 213, 215-218, 220, 219, 221; of ff. 272-287 : 272, 274, 273, 275-278, 280, 279, 281-284, 286, 285, 287 ; and of ff. 522-592 : 522, 526, 525, 524, 523, 527-541, 543, 542, 544-547, 549, 548, 550-559, 561, 560, 562-565, 567, 566, 568-571, 573, 572, 574-589, 591, 590, 592. Dated the 22<sup>nd</sup> of Shawwâl, A.H. 1221=A.D. 1807, January 2. Nos. 837, 838, ff. 597, II. 27; clear and distinct Nasta’lîḳ ; size, 14<sup>1/2 </sup>in. by 8<sup>1/2 </sup>in.
DOI: 10.6084/m9.figshare.19945180
title: SESQUITERPENES RECOVERY OF COPAIBA OIL-RESIN FROM MOLECULAR DISTILLATION

description: Copaiba oil-resin has aromatic characteristics and pharmacological activities attributed to sesquiterpenes compounds. These purified compounds present application in perfume, pharmaceutical and cosmetic industries. Therefore, the objective of this work was to use molecular distillation to recover and purify sesquiterpenes of the copaiba oil-resin with purity high. The parameters evaporator temperature (TEV) from 45 to 100 ºC and feed flow rate (Q) between 15 and 30 ml min-1 were evaluated through design of experiments (22 with center points). The results showed that it was possible to recover sesquiterpenes with 98.12% purity in the distillate stream. Increased in TEV and reduction in Q were the effects observed experimentally and through the response surface. The best experimental condition was TEV of 100 °C and Q of 15 mL min-1. Collor differences were noticed between distillate streams (colorless) and residue (brown). These can be used as parameters for separation of sesquiterpenes and diterpenes. The molecular distillation proved to be an efficient processo to both recovery and purification of sesquiterpenes from the copaiba oil-resin.
DOI: 10.6084/m9.figshare.19945180.v1
title: SESQUITERPENES RECOVERY OF COPAIBA OIL-RESIN FROM MOLECULAR DISTILLATION

description: Copaiba oil-resin has aromatic characteristics and pharmacological activities attributed to sesquiterpenes compounds. These purified compounds present application in perfume, pharmaceutical and cosmetic industries. Therefore, the objective of this work was to use molecular distillation to recover and purify sesquiterpenes of the copaiba oil-resin with purity high. The parameters evaporator temperature (TEV) from 45 to 100 ºC and feed flow rate (Q) between 15 and 30 ml min-1 were evaluated through design of experiments (22 with center points). The results showed that it was possible to recover sesquiterpenes with 98.12% purity in the distillate stream. Increased in TEV and reduction in Q were the effects observed experimentally and through the response surface. The best experimental condition was TEV of 100 °C and Q of 15 mL min-1. Collor differences were noticed between distillate streams (colorless) and residue (brown). These can be used as parameters for separation of sesquiterpenes and diterpenes. The molecular distillation proved to be an efficient processo to both recovery and purification of sesquiterpenes from the copaiba oil-resin.
DOI: 10.5281/zenodo.6600573
title: [IO Islamic 837] Maâthir-alumarâ, The Second Edition of the Great Biographical Dictionary of the Famous Amîrs, Nawwâbs, and other Noblemen who Lived

description: <strong> Another Copy of the Maâthir-alumarâ.</strong> <strong>This manuscript is now IO Islamic 837 in the India Office collections.</strong> <strong>[metadata:</strong> <strong>Hermann Ethé</strong><strong><em>, </em></strong><strong><em>Catalogue of Persian Manuscripts in the Library of the India Office,</em></strong> <strong>2 vols. (Oxford: India Office, 1903): volume 1,</strong> <strong>number 628 here with notations and hyperlinks]</strong>. <br> 628 Another copy of the same. This copy of the <em>second </em>or revised and enlarged edition is the usual one, beginning on fol.1<sup>b </sup>with the second editor׳s preface : ستايش بيكران و نيايش بی اندازه الخ , after which follow: The preface of the <em>first </em>editor, Faḳîr Ghulâm 'Alî, on fol. 3<sup>b</sup>, beginning: حمد شاهنشاهى الخ . The author׳s life, on fol. 4<sup>a</sup>, and a detailed index of the whole work, on ff. 9<sup>b</sup>-12<sup>b</sup>. Beginning of the dictionary with Ism’îlbeg Dûldî (see No. 626), on fol. 12<sup>b</sup>. The right order of ff. 206-221 is: 206, 208, 207, 209-212, 214, 213, 215-218, 220, 219, 221; of ff. 272-287 : 272, 274, 273, 275-278, 280, 279, 281-284, 286, 285, 287 ; and of ff. 522-592 : 522, 526, 525, 524, 523, 527-541, 543, 542, 544-547, 549, 548, 550-559, 561, 560, 562-565, 567, 566, 568-571, 573, 572, 574-589, 591, 590, 592. Dated the 22<sup>nd</sup> of Shawwâl, A.H. 1221=A.D. 1807, January 2. Nos. 837, 838, ff. 597, II. 27; clear and distinct Nasta’lîḳ ; size, 14<sup>1/2 </sup>in. by 8<sup>1/2 </sup>in.
DOI: 10.6084/m9.figshare.19945183
title: ELECTROCHEMICAL OXIDATION OF REACTIVE BLACK 5 AND BLUE 19 DYES USING A NON COMMERCIAL BORONDOPED DIAMOND ELECTRODE

description: We have studied the treatment of Reactive Black 5 (RP5) and Blue 19 (RA19), which are respectively azo and anthraquinone textile dyes, by electrochemical oxidation using a non commercial boron doped diamond electrode supported on titanium metallic with a relation between B and C equal to 15,000 ppm. Pt was used as counter electrode and Ag/AgCl(sat) was the reference electrode. The variables investigated to optimize the degradation were support electrolyte concentration (0.05, 0.1 and 0.2 mol L-1 of K2SO4), temperature (25, 35 and 45 ºC) and pH (2.5 and 10) by applying a current density of 75 mA cm-2. Total decolorization was observed in all electrochemical conditions studied. The highest rates of mineralization and chromatographic area removal were attained at high support electrolyte concentration due to the increase of conductivity, which caused more generation of hydroxyl radicals. RP5 was degraded at lower electrolysis time than RA19 with smaller requirement of electric charge. The mineralization rate increased in acid medium and at higher temperature since the increase in temperature favors the generation reactions of persulfate. These conditions led to the highest levels of current efficiencies and lower energy consumed.
DOI: 10.6084/m9.figshare.19945183.v1
title: ELECTROCHEMICAL OXIDATION OF REACTIVE BLACK 5 AND BLUE 19 DYES USING A NON COMMERCIAL BORONDOPED DIAMOND ELECTRODE

description: We have studied the treatment of Reactive Black 5 (RP5) and Blue 19 (RA19), which are respectively azo and anthraquinone textile dyes, by electrochemical oxidation using a non commercial boron doped diamond electrode supported on titanium metallic with a relation between B and C equal to 15,000 ppm. Pt was used as counter electrode and Ag/AgCl(sat) was the reference electrode. The variables investigated to optimize the degradation were support electrolyte concentration (0.05, 0.1 and 0.2 mol L-1 of K2SO4), temperature (25, 35 and 45 ºC) and pH (2.5 and 10) by applying a current density of 75 mA cm-2. Total decolorization was observed in all electrochemical conditions studied. The highest rates of mineralization and chromatographic area removal were attained at high support electrolyte concentration due to the increase of conductivity, which caused more generation of hydroxyl radicals. RP5 was degraded at lower electrolysis time than RA19 with smaller requirement of electric charge. The mineralization rate increased in acid medium and at higher temperature since the increase in temperature favors the generation reactions of persulfate. These conditions led to the highest levels of current efficiencies and lower energy consumed.
DOI: 10.6084/m9.figshare.19945185.v1
title: OPTIMIZATION OF SYNTHESIS OF INTERCALATED NANOCOMPOSITE HIDROGELS FOR FUTURE APPLICATION IN THE MEDICAL AREA

description: In this study, the hydrogel formulations based on polysaccharide sodium alginate were investigated for further development of intercalated nanocomposite hydrogels, for purposes of future applications in the areas of health as a carrier in drug delivery systems. Thus, the objective of the work dealt with in the optimization of hydrogels synthesis and obtaining nanostructured hydrogels with clay in an intercalated conformation. The optimization of the hydrogel synthesis was successful, and it is possible to define the materials and / or solutions to be used and concentrations of these solutions to the best formulations of hydrogels. The choice of the concentration of the polysaccharide, the type of crosslinking agent and nanofiller to continued development work, it was determined following criteria as the degree of swelling, and in some cases the physical properties, contributed to determine the best hydrogels. The development of intercalated nanocomposites hydrogel beads was confirmed by the X-ray diffraction technique, which thus could be used to observe evidence of effective incorporation or intercalation of the nanoclay in the hydrogel matrix.
DOI: 10.6084/m9.figshare.19945185
title: OPTIMIZATION OF SYNTHESIS OF INTERCALATED NANOCOMPOSITE HIDROGELS FOR FUTURE APPLICATION IN THE MEDICAL AREA

description: In this study, the hydrogel formulations based on polysaccharide sodium alginate were investigated for further development of intercalated nanocomposite hydrogels, for purposes of future applications in the areas of health as a carrier in drug delivery systems. Thus, the objective of the work dealt with in the optimization of hydrogels synthesis and obtaining nanostructured hydrogels with clay in an intercalated conformation. The optimization of the hydrogel synthesis was successful, and it is possible to define the materials and / or solutions to be used and concentrations of these solutions to the best formulations of hydrogels. The choice of the concentration of the polysaccharide, the type of crosslinking agent and nanofiller to continued development work, it was determined following criteria as the degree of swelling, and in some cases the physical properties, contributed to determine the best hydrogels. The development of intercalated nanocomposites hydrogel beads was confirmed by the X-ray diffraction technique, which thus could be used to observe evidence of effective incorporation or intercalation of the nanoclay in the hydrogel matrix.
DOI: 10.6084/m9.figshare.19945186.v1
title: BIOMATERIALS FOR NANOTECHNOLOGY-BASED FORMULATIONS TARGETING OCULAR GENE THERAPY

description: Gene therapy is a promising tool for the treatment of ocular diseases. Nevertheless, there are some import limitations, especially related to the ocular route and the characteristics of nucleic acids that must be overcome to ensure the success of the therapy. In this context, nanotechnology-based carriers such as nanoemulsions, nanoparticles, dendrimers and liposomes have risen as a promising vehicle for the protection of genetic material for vectoring the target cells. The success of such approach is closely related to the judicious selection of the biomaterial, where chemical structure and intermolecular interactions play a major role. So, this manuscript reviews some of the most important biomaterials, lipid and polymeric origin, employed in the manufacture of nanotechnologic carriers for ocular gene therapy involving interfering RNA (siRNA), antisense oligonucleotide (AS-ON) and plasmid DNA (pDNA).
DOI: 10.6084/m9.figshare.19945186
title: BIOMATERIALS FOR NANOTECHNOLOGY-BASED FORMULATIONS TARGETING OCULAR GENE THERAPY

description: Gene therapy is a promising tool for the treatment of ocular diseases. Nevertheless, there are some import limitations, especially related to the ocular route and the characteristics of nucleic acids that must be overcome to ensure the success of the therapy. In this context, nanotechnology-based carriers such as nanoemulsions, nanoparticles, dendrimers and liposomes have risen as a promising vehicle for the protection of genetic material for vectoring the target cells. The success of such approach is closely related to the judicious selection of the biomaterial, where chemical structure and intermolecular interactions play a major role. So, this manuscript reviews some of the most important biomaterials, lipid and polymeric origin, employed in the manufacture of nanotechnologic carriers for ocular gene therapy involving interfering RNA (siRNA), antisense oligonucleotide (AS-ON) and plasmid DNA (pDNA).
DOI: 10.6084/m9.figshare.19945188
title: Determination of pesticides in water and sediment by HPLC-HRMS and its relationship with the use and land occupation

description: In present times, the Brazil is in the middle of the largest pesticide consumers worldwide, which demands proper control of environmental contamination. This study evaluated herbicides, acaricide, insecticides and fungicides in water and sediment carried-out from Lageado Tacongava hydrographic basin, Rio Grande do Sul, Brazil. For analysis, a QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe), and/or SPE (Solid-Phase Extraction) using HPLC (High Performance Liquid Chromatography) with MS (Mass Detector) was optimized. As result, the Linearity R2 &gt; 0.99; Recuperation between 78 a 117%; and RSD &lt; 20% for the 70 compounds simultaneously analyzed. The Acetamiprid, Azoxystrobin, Bendiocarb, Fenamidone, metribuzin, Pendimethalin, pyridaben, Thiophanate-methyl and Truflumizole found in water, and Acetamiprid, Azoxystrobin, Bendiocarb, boscalid and thiophanate-methyl in sediment, at concentrations from 0.1 µg kg-1 to 39.6 µg kg-1. Standard of pesticide residues in water and sediment studies are needed to evaluate such contamination. Regional samplings standard, as was done here, will be useful in a future water resources contamination mapping.
DOI: 10.6084/m9.figshare.19945188.v1
title: Determination of pesticides in water and sediment by HPLC-HRMS and its relationship with the use and land occupation

description: In present times, the Brazil is in the middle of the largest pesticide consumers worldwide, which demands proper control of environmental contamination. This study evaluated herbicides, acaricide, insecticides and fungicides in water and sediment carried-out from Lageado Tacongava hydrographic basin, Rio Grande do Sul, Brazil. For analysis, a QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe), and/or SPE (Solid-Phase Extraction) using HPLC (High Performance Liquid Chromatography) with MS (Mass Detector) was optimized. As result, the Linearity R2 &gt; 0.99; Recuperation between 78 a 117%; and RSD &lt; 20% for the 70 compounds simultaneously analyzed. The Acetamiprid, Azoxystrobin, Bendiocarb, Fenamidone, metribuzin, Pendimethalin, pyridaben, Thiophanate-methyl and Truflumizole found in water, and Acetamiprid, Azoxystrobin, Bendiocarb, boscalid and thiophanate-methyl in sediment, at concentrations from 0.1 µg kg-1 to 39.6 µg kg-1. Standard of pesticide residues in water and sediment studies are needed to evaluate such contamination. Regional samplings standard, as was done here, will be useful in a future water resources contamination mapping.