bluuebunny/crossref_metadata_2025 huggingface dataset:
A tüdőartériák intimájából kiinduló sarcoma
Authors: Sejben Anita , Tiszlavicz László , Furák József , Boros Krisztina , Sápi Zoltán , Zombori Tamás
Published: February 2020

Absztrakt:

A pulmonalis arterialis intimalis sarcoma ritka, magas mortalitású daganat, mely
lokalizációja miatt a pulmonalis embolia, valamint a tüdőgyulladás tünettanát
utánozhatja. A diagnózis felállítása és a megfelelő kezelés kiválasztása körül
számos kérdés merülhet fel. Egy 46 éves, korábban hereseminoma, pulmonalis
embolia, asztma, valamint pollenallergia miatt kezelés alatt álló férfi kontroll
mellkasi CT-felvételén bal oldalon a mediastinalis pleurát infiltráló, az
arteria pulmonalist teljesen elzáró, összességében 7–8 cm-es térfoglaló
folyamatot írtak le. A hörgőbiopsziás mintából orsósejtes tumor diagnózisa
született, illetve leiomyoma, leiomyomatosus hyperplasia, illetve leiomyosarcoma
lehetőségét vetették fel. A fennálló obstrukció miatt a beteg bal oldali
tüdőeltávolításon esett át. A szövettani vizsgálat a pulmonalis artériákban
terjedő, orsósejtes daganatot kórismézett, immunhisztokémiailag diffúz SMA- és
fokális MDM2-pozitivitással, valamint magas proliferációs aktivitással. A
h-caldesmon, az S100 protein, az ERG, valamint a pancitokeratin-immunfestések
negatívnak bizonyultak. Fluoreszcens in situ hibridizációval a
tumorsejtek mintegy 10%-ában polysomiát, illetve MDM2-amplifikációt lehetett
igazolni, aminek alapján a „high-grade” pulmonalis arterialis intimalis sarcoma
diagnózisa megerősítésre került. Féléves követés alatt a betegség nem újult ki.
A pulmonalis arterialis intimalis sarcoma pontos incidenciája nem ismert. Egyes
források szerint a krónikus pulmonalis hypertoniás betegek 1–4%-ánál fordul elő.
A tünetek közül a fogyás kelti fel a leginkább a daganatos betegség gyanúját. A
képalkotó és a kórszövettani vizsgálatoknak kulcsszerepük van a diagnózis
felállításában. A daganat rossz kórjóslata miatt a minél korábbi felismerés és a
kemoterápiával kombinált sebészi kezelés javíthatja a túlélési lehetőségeket.
Orv Hetil. 2020; 161(6): 232–236.
Objektív vizsgálati lehetőség az idiopathiás és a másodlagos benignus paroxysmalis positionalis vertigo elkülönítésében
Authors: Maihoub Stefani , Molnár András , Fent Zoltán , Tamás László , Szirmai Ágnes
Published: February 2020

Absztrakt:

Bevezetés: A benignus paroxysmalis positionalis vertigo (BPPV) a
leggyakoribb belsőfül-eredetű szédüléses kórkép. Legfontosabb tünete a szédülés,
amelyet tipikus fejmozdítás vált ki, sok esetben azonban vegetatív tünetek is
társulnak. Etiológiája alapján idiopathiás és szekunder (egyéb vestibularis
eltéréshez társulva, például Ménière-betegség, neuritis vestibularis) BPPV
különíthető el. Célkitűzés: Kutatásunk célja olyan,
kraniokorpográf által vizsgált paraméter azonosítása, amely segíthet az
idiopathiás és a szekunder BPPV elkülönítésében. Anyag és
módszer: Kutatásunkba 135, BPPV-ben szenvedő beteget vontunk be,
emellett 140 ép egyensúlyrendszerű alanyt is vizsgáltunk
ultrahangos-számítógépes kraniokorpográf segítségével. A statisztikai
elemzéseket az IBM SPSS V24 szoftver segítségével hajtottuk végre.
Eredmények: 109 betegnél igazolódott idiopathiás, míg 26
beteg esetén szekunder BPPV. A kraniokorpográfos leletek elemzése alapján
szignifikáns különbség adódott a ’forehead covering area’ (fejmozgás által
lefedett terület) és a ’self-spin’ (tengely körüli forgás) paraméterekben, ezek
gyakrabban kórosak szekunder BPPV esetén. Következtetés: Az
ultrahangos kraniokorpográf segítségével a BPPV modern és objektív
diagnosztikája biztosítható, elsősorban a szekunder típusú esetekben. Orv Hetil.
2020; 161(6): 208–213.
Characterization of Absolute and Uniform Continuity
Authors: ASLAN İsmail , DUMAN Oktay
Published: February 2020

In the present paper, by considering nonlinear integral operators and using their approximations via regular summability methods, we obtain characterizations for some function spaces including the space of absolutely continuous functions, the space of uniformly continuous functions, and their other variants. We observe that Bell-type summability methods are quite effective to generalize and improve some related results in the literature. At the end of the paper, we discuss some special cases and applications.
Acid ion modification in a dialysis fluid
Authors: Poz I. L. , Strokov A. G.
Published: February 2020

Apart from its main electrolytes – sodium, potassium, calcium and magnesium – a dialysis fluid (DF) contains a buffer for correction of acidosis. A small amount of acid is added to the DF to prevent calcium and magnesium precipitation. Acetic acid has traditionally been used for this purpose. Several studies have shown that acetate ion, even in small concentrations, can cause a number of adverse events, such as low blood pressure, production of proinflammatory cytokines, etc. This literature review aims at considering alternative acidic components of DF, such as citric, hydrochloric, and succinic acids, as well as their advantages, possibilities and features of their use in wide clinical practice.
Peculiarities of the morphology of liver biopsy samples of donors above 60 years of age
Authors: Iljinsky I. M. , Mozheyko N. P. , Voronov D. V. , Minina M. G. , Tsirulnikova O. M.
Published: February 2020

Objective: to study the differences in the frequency of pathological processes in liver biopsy samples of donors older than 60 years (group 1) and donors currently recognized as “standard” by age – 60 years and younger (group 2). Material and methods. Of the total pool of 300 consecutive donors with brain death, there were 28 (9.3%) donors over 60 years old (61 to 73 years old; 19 men and 9 women). Results. The frequency of pathology is independent of gender in both groups (p > 0.05). In elderly donors, compared with “standard” donors, mild (p < 0.05) and significantly more often severe (p < 0.05) albuminous degeneration are significantly less frequent, and there is only a tendency (p > 0.05) to more frequent mild hepatic steatosis. Dystrophic processes are the result of more severe ischemic injury to the liver of elderly donors. Ischemic liver injury determines the risk of more frequent biliary complications, which require careful monitoring and maintenance at an optimal level of hemodynamics for donors in the intensive care unit. Based on other morphological parameters, the liver of donors above 60 years of age does not significantly differ (p > 0.05) from the liver of donors 60 years and younger. Conclusion. To expand the donor pool, age restrictions should be removed when selecting a liver for transplantation, thereby maximizing the use of donor potential.
Response to Stephens et al. (2019)
Authors: Peterson A. Townsend , Soberón Jorge , Ramsey Janine , Osorio-Olvera Luis
Published: February 2020

Rebuttal to Stephens et al. (2019), as part of a debate format.
An Organizational Factor Predicting School Effectiveness: School Climate
Authors: ÖZGENEL Mustafa
Published: February 2020

The purpose of this study is to determine whether the school climate affects school effectiveness. For this purpose, quantitative research relational screening model was used in the study. The research was conducted in 2018-2019 academic year and 341 teachers participated voluntarily. In the research, The Organizational Description Climate Scale for Elementary Schools (OCDQ-RE]) developed by Hoy and Tarter (1997) and adapted to Turkish culture by Yılmaz and Altınkurt (2013) was used together with The School Effectiveness Index, which was developed by Hoy (2014) and adapted to Turkish culture by Yıldırım (2015). The data were analyzed by correlation and regression analysis. According to the findings, school climate predicts school effectiveness. The findings were discussed with the results of other researches in the literature and suggestions were made to the administrators and teachers.
Examination of the Relationship between Adolescents’ Subjective Well-Being and Parenting Styles and Smartphone Addiction by Several Variables.
Authors: YILDIRIM Selami , AYAS Tuncay
Published: February 2020

This research aimed to examine the relationship between adolescents’ subjective well-being and parenting style and smartphone addiction by several variables. The research population was composed of high school students studying in Kocaeli province in the academic year of 2017-2018. The sample was composed of 671 adolescents attending 6 different high schools which were randomly chosen out of this population. 313 (46.6%) of the participants are female, 358 (53.4%) of them are male. It was found in the research that participants’ smartphone addiction levels did not differ statistically and significantly by gender, whether parents were together or divorced, and parental income. A negative significant relationship was found between academic achievement and smartphone addiction. According to the analysis results, as the smartphone usage duration extended, smartphone addiction level increased. The results of the analysis conducted to determine whether smartphone addiction was predicted by adolescents’ subjective well-beings and the parenting styles (acceptance/involvement , psychological autonomy and strictness/supervision) showed that all variables other than parental acceptance were negative significant predictors of smartphone addiction. It was concluded that subjective well-being was the most important predictor of smartphone addiction.
Investigating the Relationship between Life Satisfaction and Academic Self-Efficacy on College Students’ Organizational Identification
Authors: Çelik Raşit , Orçan Fatih , Altun Fatma
Published: February 2020

This article explores the relationship between life satisfaction, academic self-efficacy, and organizational identification through a full structural equation model. The data was collected from 255 participants enrolled in different colleges within two universities via the scales of Life Satisfaction, Academic Self-Efficacy, and Organizational Identification. The results show that life satisfaction has direct significant effects on academic self-efficacy and organizational identification. In addition, the study also revealed that there is a significant indirect effect from life satisfaction to organizational identification via academic self-efficacy.
The Patriotic Attitudes of The Prospective Teachers
Authors: FAİZ Melike , KARASU AVCI Emine
Published: February 2020

The concept of patriotism can be defined as loving the homeland and making sacrifices for it. From this perspective, it can be said that the concept of patriotism has a function of uniting and integrating the people who live on the same land and gives people an understanding which is proud of its history. Patriotism is also a dynamic concept. Because it is the behavior, consciousness and understanding that we put forward in every moment of life, in every field and in all our actions. It is also the basic condition of being a good and effective citizen. With the impact of globalization and technology, while the world is rapidly becoming a big village, civil wars, migrations, economic crises, hunger, famine and confusion in various continents and countries of the world increase the need for protection of national values and reveal the importance of patriotic education. On the other hand, patriotic education is aimed to be provided to the students who will be the citizens of the future through the education programs in the schools. For this reason, determining the patriotism attitudes of the teachers who will gain the patriotism value to the students is important in determining the deficiencies and taking measures in the acquisition of this value. In this context, the aim of the study was to reveal the pre-service teachers' patriotic attitudes. In the research, screening model which is one of the quantitative research types was used. The study group of the research is composed of Social Studies, Turkish, Science, Mathematics, Primary School and Preschool teachers who are studying in the 3rd and 4th grades of a state university in the fall semester of 2019-2020 academic year. The sample type of the study was determined as purposeful sample. In the study, “Attitude Scale of Patriotism Attitude” which was developed by Schatz, Staub and Lavine (1999) and adapted into Turkish by Yazıcı (2009) was used. As a result, according to the gender of male teachers were more patriotic than famela students. According to the department variable, there is a difference between the department of social studies education and preschool education in the blind patriotism and whole scale scores, in favor of social studies education. There was no significant difference according to family income and class level.
Investigation of the Level of Secondary School Students’ Emotional Intelligence in Terms of Different Variables
Authors: Uçak Esra , Yıldırım Leyla
Published: February 2020

According to the existing research, emotional intelligence includes skills that can be developed. In many studies conducted in the literature, it is emphasized that emotional intelligence skills are not stable rather continuously change and develop. In the current study, it is aimed to investigate the level of secondary school students’ emotional intelligence (11-14 years old) in terms of different variables (gender, grade level, parents’ education level, the extent to which their parents care about their feelings, the frequency of reading book, the length of time spent on the phone or computer, person(s) or the environment playing the most important role in the growth of the individual, experiencing difficulty or not in making friends). The current study is designed in the descriptive survey model. The study group is comprised of a total of 920 students (483 females, 437 males) attending different state schools in the city of Denizli in the spring term of the 2018-2019 school year. As the data collection tools, “The BarOn Emotional Intelligence Scale (Child and Adolescent Form) and a “Personal Information Form” were used in the current study. The collected data were analyzed in SPSS 22.0 program package. The data were analyzed by using Multivariate Analysis of Variance (MANOVA). As a result of the research, it was found that secondary school students’ emotional intelligence levels significantly vary depending on the variables such as grade level, the extent to which their parents care about their feelings, the frequency of reading book, the length of time spent on the phone or computer, person(s) or environment playing the most important role in their growth, father’s education level and experiencing difficulty or not in making friends. However, no significant difference was found in the students’ levels of emotional intelligence based on gender and mother’s education level.
In situ sequencing for RNA analysis in tissue sections v2
Authors: Yokota Chika , Gyllborg Daniel , Nilsson Mats
Published: February 2020

In situ sequencing method for parallel targeted analysis of short RNA fragments in morphologically preserved tissue. This protocol can be used to detect RNA molecules at the single cell level to aid in the identification of cell types according to their gene expression. The technique uses padlock probes to target desired genes of interest and rolling circle amplification to amplify signal for a high throughput methodolgy of spatial transcriptomics. With the use of barcode sequencing, identification of numerous genes is possible through multiplexing. Version 2 Update: Only minor mistakes were corrected for version 2 of this protocol, no major changes to protocol were done. Some references were also updated.
Sequence-Independent, Single-Primer Amplification of RNA viruses v1
Authors: Moreno Gage , O'connor David
Published: February 2020

This protocol outlines the methods to perform unbiased direct metagenomic sequencing of nucleic acid extracts from cell-free fluids. This protocol can be adapted to be run on Illumina and Nanopore sequencing platforms. The protocol is based off of the work from Kafetzopoulou et al. (PMID: 30563591). Liana has provided the lab with detailed protocols, and has worked with us extensively on optimizing and getting protocols running efficiently. Please note that this protocol has been updated to use SuperScript IV with it’s optimal temperature which has been reflected in Lewandowski et al. (DOI: https://doi.org/10.1128/JCM.00963-19) Notes: * This protocol has been used to sequence influenza direction from respiratory clinical samples (DOI: https://doi.org/10.1128/JCM.00963-19). * A team from China published last week on a 2019-nCoV familial cluster using the SISPA protocol as for coronavirus whole genome sequencing (DOI: https://doi.org/10.1016/S0140-6736(20)30154-9) SISPA-Primer A - 5'-GTT TCC CAC TGG AGG ATA-(N9)-3' SISPA-Primer B - 5′-GTT TCC CAC TGG AGG ATA-3′
Novel coronavirus (2019-nCoV) real-time RT-PCR N gene 2020 (Wuhan-N; 2019-nCoV-related screening test) v2
Authors: A Northill Judy , M Mackay Ian
Published: February 2020

A real-time RT-PCR to detect the "novel Wuhan" betacoronavirus. Based on sequence MN908947 made available by Professor Yong-Zhen Zhang, Fudan University, Shanghai, China. The target region encodes the nucleocapsid (N). Not tested on wild-type virus (as of 25Jan2020), it is expected to be capable of detecting Wuhan virus, bat-like SARS and SARS virus. Limit of detection not yet determined. A single 1 mismatch at probe-binding site identified with the BetaCoV/USA/CA1/2020|EPI_ISL_406034 variant of 2019-nCoV (as of 29JAN2020). Probe is in the 3'-5' (reverse complement) direction. Notes: Assay is fully optimised (as of 24Jan2020). A final name for this virus has not been decided (as of 25Jan2020).
“The danger still hangs over my head” Fear of Recurrence among Israeli Breast Cancer Survivors
Authors: Levkovich Inbar
Published: February 2020

Introduction: Many breast cancer survivors report a fear of recurrence of the disease, which finds expression in anxieties that the original cancer will return or that another form of cancer will begin to develop. The present study evaluated perceptions of and feelings about the fear of recurrence from the point of view of breast cancer survivors, the impact of this fear on their lives, and their means of coping.

Method: Qualitative research was conducted using the phenomenological approach. The sample included 13 breast cancer survivors aged 34-67 who were within 1 year after completion of chemotherapy. Participants included survivors who had been diagnosed with localized breast cancer, Stages I-III, without metastases, and without previous cancer diagnoses. Participants provided their personal details, while details of the disease and treatments were collected from the patients’ files.

Results: Two main themes emerged: (1) Along with the desire to gradually return to normal life, the study participants described an ongoing sense of existential threat, a lack of security and a sense of being out of control when any follow-up tests or pain linked to potential cancer caused fear and anxiety and (2) their fears also concerned their family members as they were afraid their loved ones might get sick and go through the suffering they had experienced.

Conclusions: The fear of cancer recurrence is a multidimensional phenomenon. This emotional response can arise as a result of physical symptoms causing suspicions that the disease has returned or as a result of external factors, such as follow-up tests or other people’s illnesses.
A Techno Economic Analysis of 2MW On-Grid Solar Power Plant for Tourist City Chavy – Land
Authors: Majeed Asso , Al-Kez Dlzar , Ali Parikhan
Published: February 2020

Iraqi Kurdistan Region has a big potential in solar energy, because of its location and territorial extension. Yet the exploration of this technology not widely accepted in thisregion due to some reasons including the high installation cost, the lack of experience and technical unknowns. In this paper, a techno-economic analysis has been carried out toresolve some of these unknowns using 2MW solar power system and Chavy land city as a test bed. The system tries to contribute to part of daily energy demand of the place. Thewell-known computational System Advisor Model (SAM) simulation used to run technical and financial analysis. Simulation results showed that the system contributes significantly topower the area and reduce the load on the national grid. Although initial installation cost shows high prices, within a short period it would not only recover installation costs but alsohelp gain substantial disbursement through the lifetime of the system.
Resistivity Imaging: Application of 2D Resistivity Survey for Under Groundwater Prospecting in New Campus of Sulaimani University and Surrounding
Authors: Othman Halo
Published: February 2020

Groundwater, the hidden source of life, it is so important to be estimated quantitatively and qualitatively before extracting and using. New campus of university of Sulaimani locates atthe west of the city, has a vast area, so that it needs to more water supplies for daily uses and irrigation. Therefore, conducting of geophysical survey was decided to ensure the existenceof underground water then drilling water wells. Next, a 2D electrical tomography was carried out along seven profiles of 720m using Syscal instrument with its accessories in andout of the university. After that, the obtained data were processed then interpreted using Res2Dinv software to approach a final conclusion. Finally, the results showed in profiles 1,2, and 3, the resistivity value was about 5-157 ohm.m and about 20-30 ohm.m in the water bearing layer with nearly 20m depth, deep well of depths ranging from 100 to 125 arerecommend near the location of electrode are indicated on the resistivity sections, the expected productivity is moderate to low. At profile 4, resistivity of 2-300ohm.m wasobtained and 20-100ohm.m in the water bearing layer of more than 20m depth, deep well is not recommended, the expected productivity is low. In geophysical point of view, thesurveyed locations beneath the profiles 5 and 6 not suitable for drilling an artesian well, a Marley limestone of low resistivity 9-40ohm.m was detected extending 70-150m of depth.Also, profile 7, is not suitable for drilling water well because of clay layers of low resistivity ranging 18-30ohm.m in depth of 30m.
Effect of inoculating mycorrhizal fungi and Rhizobium on broad bean (Vicia faba L.) growth at different phosphorus levels in calcareous soil.
Authors: Ahmed Fryal , Fattah Omar
Published: February 2020

The experiment was carried out, under plastic house at the college of Agricultural Engineering Sciences, University of Sulaimani, Bakrajo, during 2018-2019 to determine influence of inoculation with arbuscular mycorrhizal fungi (AMF) and Rhizobium leguminosarum at different phosphors levels (0, 40, 80, 120 and 160 kgPha-1) on broad bean (Vicia faba L.) growth and nutrient uptake. The experiment was performed in a factorial experiment with completed randomized design (CRD) in a silty clay soil, with three replications for each treatment. After ten weeks of growth, the plants were harvested to determine plant growth (root colonization, shoot dry weight, root dry weight, nodule number, and shoot nutrient content N, P, K, Fe and Mo The results showed that inoculated broad bean plants with mycorrhiza or the bacterium Rhizobium leguminosarum increased plant growth and nutrient uptake compared with non-inoculated plant. Inoculated soil with AMF increased root colonization, shoot dry weight, root dry weight, and nodule number the highest value was (65%, 15.09gpot-1, 7.72gpot-1 and 128.67 nodule pot-1) respectively and the highest value for shoot N, P, K, Fe and Mo nutrients were (15.68gkg-1, 4.38gkg-1, 17.72 gkg-1, 184.00µgg-1 and 0.83 µgg-1) respectively recorded at highest P level (160 kgPha-1). But when the soil inoculated with the Rhizobium leguminosarum, the effect was increased plant growth, (root colonization ,shoot dry weight, root dry weight and nodule number) The highest value was(26.67% , 15, 60gpot-1, 8.03gpot-1 and 191.33nodule pot-1 ) recorded at highest P level, and inoculation with R. leguminosarum was increased significantly shoot N, P, K, Fe and Mo contents, the highest value were (20.35gkg-1, 3.72 gkg-1,16.78 gkg-1, 175.33 µgg-1 and 0.80 µgg-1  )respectively recorded at highest P level (160 kgPha-1).
Stability and Yielding Performance of Seven Chickpea Genotypes (Cicer Arietinum L.) Over a Range of Environments in Sulaimani, Iraq
Authors: Hamma-Umin Bestoon
Published: February 2020

Seven genotypes of Chickpea (Cicer arietinum L.), namely; FLIP 97-706C, FLIP 03-87C, FLIP 05-74C, FLIP 05-87C, FLIP 05-110C, FLIP 05-142C, and FLIP 05-150C were evaluated in three different environments in Sulaimani-Qlyasan during every spring from 2016 until 2018.Using Randomized Completely Block Design (RCBD) with three replications in order to study the stability and genotypic resultant growth and yieldcharacters. The results exhibited highly significant effects due to genotypes ×seasons in most of the studied characters with the exception of no. of seeds/pod and no. of branches/plant. The genotype (FLIP 05-150C) was considered the best genotype, which had the high homeostasis values for six characters plant height (0.984), plant weight (0.954), no. of pods/plant (0.951), no. of seeds/plod (0.977), 100 seed weight (0.973) and seed weight/plant(0.930). This genotype needs to be assessed in more varied environments examine. The highest genotypic resultant values were recorded by the genotype (FLIP 05-150C) for plant height (1.109), plant weight (1.020), no. of pods/plant (1.427), no. of seeds/pod (1.001), 100 seed weight (1.095) and seed weight/plant (1.150), indicating this genotype had high performance at different environments and should be not disregarded in future studies.
Relative Sensitivity of Conventional and PCR-based Approaches for the Detection of Clinical Methicillin-resistant Staphylococcus aureus
Authors: Sidiq Avin , Ameen Sirwan
Published: February 2020

The aim of the present study was to investigate the use of PCR and disk diffusion methods in determination of methicillin-resistant Staphylococcus aureus (MRSA) strains and compare their accuracy and specificity. For this purpose a total of 150 clinical isolates obtained from burn patients were investigated; of these 55 (36.6 %) were identified as S. aureus by conventional and Vitek® 2 system.  All isolates were subjected to 30 μg cefoxitin to identify MRSA isolates. Besides, PCR was utilized for molecular analysis. Among the results of disk diffusion methods in our study, the prevalence of MRSA was 92.7% and MSSA was 7.3% with the sensitivity and specificity of 92.15 % and 75 % respectively. Whereas, 87.3 % of S. aureus isolates were mecA positive and 12.7% were mecA negative in PCR assay. Our finding showed that the PCR is more accurate and allowed early and rapid identification of methicillin-resistant S.aureus.
Evaluation of Flexural Strength of Heat Cure PMMA Denture Base Material Reinforced with Various Concentrations of Zirconium Oxide Nanoparticle: An In-vitro Study
Authors: Raouf Lazyan , Faraj Souza , Azhdar Bruska
Published: February 2020

Objective: The aim of this study was to investigate the effect of zirconium oxide (ZrO2) nanoparticle dispersion on the flexural property of heat-cure polymethylmethacrylate denture base material.        

Methods: Eighty specimens were divided into 10 groups of eight specimens; Group 1 unreinforced acrylic, group 2: treated with ethanol alcohol, Groups 3,4,5 and 6 reinforced acrylic specimens with 1, 3, 5, and 7 wt% of untreated zirconium oxide nanoparticle (u- ZrO2) and Groups 7,8,9 and 10 reinforced acrylic specimens with treated and sonicated zirconium oxide nanoparticle in ethanol alcohol (t-ZrO2). X-ray diffraction test (XRD) was used to study the dispersion quality of the tested specimens, and universal testing machine was used to evaluate flexural strength and flexural modulus. SPSS software program used to compare groups results statistically.

Results: The results revealed significant decrease in flexural strength with u-ZrO2 nanoparticle addition in different concentration groups (p<0.05), while with t-ZrO2 nanoparticle addition, above 3 wt% statistically significant decrease was noted as compared to the conventional group. However, the flexural modulus increased with increasing the both of u-ZrO2 and t-ZrO2 nanoparticles addition. XRD results showed better dispersion quality of the t-ZrO2 than u-ZrO2 throughout the acrylic resin denture base material.

Conclusions: Flexural strength decreased inversely with increasing u-ZrO2 concentration, while it decreases significantly above 3 wt% of t-ZrO2 nanoparticle concentration. The flexural modulus increased with increasing both of u-ZrO2 and t-ZrO2 nanoparticles. Reduced nanoparticle’s cluster size of t-ZrO2 allows more nanofiller to be incorporated to denture base materials with less adverse effect on the mechanical properties.
Trueness of Stereolithographic Model Compared to Conventional Model Using CAD/CAM Prosthesis with Digital Photographs
Authors: Martani Nabeel
Published: February 2020

Objective: Accuracy of the stereolithographic (SLA) model significantly influences their laboratory uses. The aim of this study was to compare the accuracy of SLA models created from digital impressions to conventional die stone models obtained from elastomeric impressions using full anatomic CAD/CAM fabricated fixed prosthesis.        

Methods: A partially edentulous typodont model was prepared for this study with two-implant abutments as a reference model. Two impression techniques were used to fabricate study models. Group one (n=5), SLA models were created from digital impressions acquired by an intra-oral scanner. While in group two (n=5), die stone models obtained from vinyl polysiloxane impression materials (VPS). A full anatomic zirconia bridge was fabricated using CAD/CAM system and high-resolution digital photographs from the buccal surface were captured using a macro lens . The vertical distance between selected points was measured by three evaluators using a calibrated digital software program. The t-test with 95% confidence interval was used to evaluate the accuracy of the models.

Results: There was a strong agreement among observers with a statistically significant difference in the seating of prosthesis on the SLA model versus the conventional model, with a mean and standard deviation of -0.17±0.24 mm and 1.04±0.22 mm subsequently. Their results of the t-test were showed fewer errors in the SLA group.

Conclusions: CAD/CAM fabricated bridge was better seated on SLA models from digital impressions compared with die stone models from elastomeric impressions. Therefore, the trueness of 3D printed models was greater than conventional models compared to the reference model.
Management of Gummy Smile by Surgical and Non- Surgical Techniques: A Clinical Comparative Study
Authors: Omer Blend , Mohammad Chenar
Published: February 2020

Objective: Gummy smile (GS) also referred to an excessive gingival display (EGD). it’s an aesthetic disorder that can be managed by a variety of procedures include; modified lip reposition surgery (MLRS) and botulinum toxin type-A injection (BTX-A). This study aimed to evaluate and compare the effect of treatment of GS by surgical technique (MLRS) and non-surgical technique (BTX-A injection) 1 and 4 months after treatment. 

Methods: The study was conducted from November 2018 to November 2019. Forty adult patients aged 18-35 years with a EGD ≥ 4 mm caused by soft tissue disorders were recruited. Patients divided into two groups; Group 1 included 20 patients treated by MLRS and Group 2 (20 patients) treated by BTX-A injection. The amount of gingival display (GD) was evaluated after 1 and 4 months of the treatments by Autodesk AutoCAD computer program. ANOVA test used to compare changes in GD before and following treatments.

Results: The study showed a significant reduction in the amount of GD in both groups after 1 and 4 months of the treatment (p value < 0.05). Non-significant differences between both groups in 1 and 4 months of follow up (p value > 0.05).

Conclusions: Both MLRS and BTX-A injection technique were effective treatment modalities for patients suffering from GS.
Validity of CPITN Index Applied by Undergraduate Dental Students
Authors: Khursheed Dler , Zardawi Faraedon , Karim Shokhan , Abdulrahman Adham , Gul Sarhang , Salih Rishwan
Published: February 2020

Objective: The goal of the community periodontal index of treatment needs (CPITN) is to determine the periodontal conditions and treatment needs in populations. It can also be used for preliminary diagnostic tool in the dental clinic. Therefore, the aim of this study was to evaluate the relation of patients’ narration of oral hygiene measures on the plaque, bleeding and CPITN indices and validity of records performed by undergraduate students. 

Methods: Data of 405 patients were retrieved in this study. It was composed of patient’s narrations records of oral hygiene measures (type and frequency) plus plaque, bleeding and CPITN indices, and the number of cigarettes per day. Ramfjord’s teeth were used for plaque and bleeding indices, while all teeth in the sextants examined in the CPITN index system. Chi- square test used to determine the relationship between oral hygiene maneuver and dental plaque, bleeding and CPITN sextant scores.

Results: Toothbrushing, type, and frequency showed significant relations with dental plaque scores. However, neither smoking nor other oral hygiene measures were shown to be related to bleeding scores. Smoking, toothbrushing techniques and mouthwashes had shown significant relations with mean CPITN index, whereas the other variables had shown non- significant relations with CPITN. Score 2 form the highest percentages, followed by score 3 and score 1, respectively.

Conclusions: The study did not show a positive association with the level of oral hygiene measures as narrated by the patients and their oral health status. Furthermore, the records of CPITN were consistent with many previous studies.
Bryoperdon, A New Gasteromycete Genus Record for Turkey
Authors: KAYA Abdullah , UZUN Yasin
Published: February 2020

The gasteromycete genus, Bryoperdon is given as new record for the
Turkish mycobiota by the collection and identification of B. acuminatum specimens from Ardeşen district of Rize province. The
new recorded taxon is described briefly, and the distribution locality, voucher
number and photographs related to its micro and macromorphologies are provided.
The Effect of Cuscuta babylonica Aucher on Chemical Compounds of Lice Tomato
Authors: ÖZEN Hasan Çetin , SAVAŞÇI Servan , SURMUŞ ASAN Hilal , KIZMAZ Veysi
Published: February 2020

Tomato (Lycopersicon esculentum L.) is one of the most widely used products in nutrition. But this plant suffers significant loss of yield due to parasitic plant infection. Dodder (Cuscutaspss.), a flowering plant belonging to the Convolvulaceae family, is one of the most harmful parasites for tomatoes. Although some tomato varieties have developed resistance to this, Cuscuta is the most important disease that has a negative impact on tomato yield. In this study, it was investigated that how Lice tomato is affected by Cuscuta babylonica Aucher infection and whether it develops resistance to it. For this purpose, following Cuscuta infection, the amount of fatty acids, calcium (Ca2+) and some phenolic compounds in the leaves of the tomatoes were investigated. The results of the study showed that the Cuscuta infection increased the amount of 16: 1, 18: 0 and 18: 1 fatty acids, Ca2+ and some phenolics such as chlorogenic acid, rutin, quercetin and salicylic acid which are effective in defense against pathogens.
The analysis of occupational accidents among the healthcare staffs
Authors: ÖZENİR Songül , ÜNVER Vesile
Published: February 2020

Objectives:
The aim of the study is to identify
the attitudes of healthcare professionals towards the potential occupational
accidents and the safe use of sharp instruments in their work environment. Methods: The study was carried out between February 2017 and
March 2017 with the participation of 173 health care personnel. The data
collection forms consist of two parts, “Questionnaire about the occupational
accidents that the participants might experience” and the“Attitude scale about
the safe use of sharp objects and instruments by the participants”. Results: The number of injuries they experienced in the same
period varied between 1 and 12 and the mean injury cases were found to be 2.76 ±
2.59. The total score of the participants from the Attitude scale was found to
vary between 68 and 112, with a mean total score of 81.65 ± 7.03.

Conclusions: The
participants of the study are subject to serious occupational accidents and
occupations risks which may negatively affect their health.
CONTEMPORARY ISSUES AND THE WAYS OF ENSURING ELECTROMAGNETIC SAFETY OF MOBILE COMMUNICATION TO THE HEALTH OF THE POPULATION
Authors: Rakhmanin Yury A. , Onishchenko G. G. , Grigoriev Yu. G.
Published: February 2020

There was performed an analysis of the literature data on the characteristics and dynamics of changes in the electromagnetic environment associated with the uncontrolled intensive development of cellular communications, as the most active system for the formation of mobile communication tools related with electromagnetic fields (EMF) created by non-ionizing radiation (NIR) as base stations and subscriber terminals (ST). It is summarized the main medico-biological features of the influence of EMF radio frequency range (RFR) on the body and patterns of the formation of the density of the flow of energy (DFE) NIR. There are considered the main principles of the formation of regulatory base underlying in the basis of ensuring biosafety these funds in Russian Federation (RF) and abroad, including influence on the central nervous system (CNS) and remote consequences, in particular on cancergenezis, as well as grounds for their adjustments and modernization. Special attention is paid to the negative impact of EMF RFR on critical groups of the population, first of all, children. There are given ways of reducing the intensity of the RFR, creating conditions to reduce radiation exposure by users. There was performed comparison of frequency modulations means of mobile communication with the frequency characteristics of organ and intracellular functional systems of the human body. It’s presented goal, tasks and measures for the project foundations of the conception of EMS of the RF for the period to 2025, developed based on the hearings as of problems in the Committee on social policy at the Council of the Federation, held in 2017-2018 years.
ELECTROMAGNETIC CONDITIONS HYGIENIC ASSESSMENT AT WORKPLACES WITH PERSONAL COMPUTERS: HISTORY AND PRESENT STATUS
Authors: Pokhodzey L. V. , Paltsev Yu. P. , Rudneva E. A.
Published: February 2020

Introduction. Currently, in force hygienic normative-methodical documents (SanPiN 2.2.2/2.4.1340-03, SanPiN 2.2.2/2.4.2620-10, SanPiN 2.2.4.3359-16) do not allow to objectively estimating EMF on modern workplaces of personal computers (PCs) users by and other means of information and communication technologies (ICT). Aim of the study is scientific substantiation of improvement of normative-methodical documentation on hygienic regulation and evaluation of EMF in computerized workplaces using modern ICT. Material and methods. The analytical method of evaluation of modern normative-methodical documentation regulating hygienic norms and methods of evaluation of EMF in the workplace of PC users is used. More than 11 thousand measurements of EMF levels were carried out. Results. A critical analysis of the current hygienic regulations of EMF in the workplace of PC users and other means of ICT in Russia showed they to be not scientifically justified, and the existing methodology does not allow an adequate hygienic assessing of the electromagnetic environment (EME). The main sources forming EME on modern workplaces of PC users are both PCs, and switching power supplies, network support devices (UPS), cable lines, wiring, broadband wireless access systems (base stations, Wi-Fi routers, access points, external and built-in laptops USB modems), cell phones, lamps of local and general lighting. EMFs on a workplace of PC users are characterized by complex amplitude-frequency composition: electric and magnetic fields at frequencies of 30 Hz - 300 kHz, EMF at frequencies above 300 MHz, electrostatic fields, hypogeomagnetic fields. New EMF hygienic standards at workplaces of PC users and other means of ICT are scientifically proved. Conclusion. The introduction of new regulations will ensure an adequate hygienic assessment of EMF in the workplaces of PC users in each normalized frequency band in total from all sources and will eliminate the current contradictions and shortcomings. The introduction of new EMF hygienic standards in the practice of sanitary and epidemiological supervision will preserve the health of the PC users and other ICT facilities.
THE STUDY OF CIRCULATION OF VIRUSES IN SURFACE WATERS AND IN WASTEWATER
Authors: Dmitrieva Raisa A. , Doskina T. V. , Zagainova A. V. , Nedachin A. E. , Abramov I. A. , Bulatova K. V.
Published: February 2020

Introduction. There was presented data from the field observation of surface waters and wastewater on indices of viral pollution. Material and Methods. To detect the presence of viruses, we examined samples as following: waters of the rivers of the Central European region of Russia; wastewater of the cities of this region; wastewater after treatment at three aeration stations. Eluates were examined for viruses on 2 transplantable RD and Hep-2 cell lines recommended by WHO, as well as on BGM culture. In addition, in the majority of samples, RNA of entero-, noro-, astro-, rotaviruses, hepatitis A viruses (HAV) was detected in RT-PCR and adenovirus DNA in PCR. The output of viruses in cell cultures was carried out in 3 passages, and the determination of RNA and DNA of viruses - in 2 replications. All samples were also examined for coliphages, as indirect indices of viral contamination. Results. It was revealed that coliphages were detected in surface water in 94% of samples, viruses on tissue RD, Hep-2 and BGM cell lines were detected in 35% of samples. The percentage of detection of RNA entero-, rota-, noro-, astroviruses, HAV and adenovirus DNA ranged from 10 to 70%. Discussion. Studies conducted at three aeration stations showed an increase in viral contamination of water in water bodies after the discharge of wastewater into them. Conclusion. Wastewater, both untreated and after biological treatment and disinfection, is contaminated with viruses and when discharged into surface water bodies creates a high risk to public health. In order to preserve the water resources of Russia, modern methods of cleaning and disinfecting wastewater should be modernized with the development of individual schemes taking into account the data of sanitary and virological control of discharged wastewater and the standards specified in the documents of water sanitary legislation.
TRANSFORMATION OF PHENOL AND DIATOMIC PHENOLS IN SURFACE WATER UNDER THE IMPACT OF NATURAL PHYSICAL AND CHEMICAL FACTORS
Authors: Nekrasova Larisa P. , Malysheva A. G. , Abramov E. G.
Published: February 2020

Introduction. Phenol, as well as diatomic phenols, are among the most common and priority organic pollutants of the environment. Getting into the water with sewage in real conditions of pollution, under the influence of natural physicochemical factors, phenols, as highly reactive compounds, undergo a transformation, as a result of which new, sometimes more toxic compounds may be formed. Purpose of the study is to investigate the transformation processes under the impact of the natural physicochemical factors of phenol, hydroquinone, pyrocatechin, and resorcinol in surface water. Material and methods. The processes of transformation of phenol and diatomic phenols were studied by the methods of spectrophotometry and luminescence spectroscopy. Absorption spectra were recorded with a UV-1800 spectrophotometer (Shimadzu, Japan), and fluorescence spectra were recorded on a CM2203 spectrofluorometer (Solar CJSC, Belarus). The degradation of phenols to CO2 and H2O (mineralization) at room temperature in natural samples was determined using a TOC-VCHP total carbon analyzer (Shimadzu, Japan). Results. The decrease in phenol concentration in river water was subject to linear dependence. The transformation kinetics of resorcinol corresponded to a sequential reaction. The processes of transformation of hydroquinone and pyrocatechin were dominated by chemical oxidation processes. Hydroquinone completely transformed within 24 hours. The degree of conversion of pyrocatechol 87.5% was achieved in 3 days and did not change during the month. During the month, the mineralization of phenol amounted to 90%, hydroquinone, and pyrocatechol - 55% and 45%, respectively. The complete transformation of resorcinol occurred in 7 days. A compound having a bright fluorescence and constituting a product of resorcinol polycondensation, whose concentration increased during the whole experiment, was formed. The degree of mineralization of resorcinol was 93%. Conclusion. The transformation of phenol, hydroquinone, pyrocatechin, and resorcinol in the surface water is caused by the processes of natural chemical and biochemical oxidation and depends on the chemical composition and concentration of presented impurities.
ASSESSMENT OF THE ENVIRONMENTAL IMPACT OF TOXIC WASTE DISPOSAL AT THE KRASNY BOR LANDFILL
Authors: Kombarova M. Yu. , Radilov A. S. , Alikbayeva Lilya A. , Yakubova I. Sh. , Kudryavtsev M. A. , Rinchindorzhiyev B. B. , Gulyayev D. V.
Published: February 2020

Introduction. Russia annually produces about 400 thousand tons of Hazard Class I (extremely hazardous) and Hazard Class II (highly hazardous) wastes. Material and methods. The Program includes the study of the hazardous chemical pollution produced by the waste disposed at the Krasny Bor Landfill within a radius of 1-4 km over the period from 2009 to 2013. Samples of water, sediments, soil, and atmospheric air were analyzed by gas and liquid chromatography with highly sensitive detectors, as well as IR spectroscopy. Results. At all sampling sites, the air concentrations of priority pollutants characteristic of the waste disposed at the Landfill did not exceed the MAC level. Analysis of water and sediments from channels at the Landfill showed that the concentrations of a number of chemical pollutants at the border of the 1-km zone exceed the corresponding regulatory standards. Heavy pollution of wastewater and bottom sediments at the Landfill with some waste components, including organochlorine compounds, oil products, and heavy metals, as well as uneven pollution of soil in the 1-km zone from the Landfill in the northern and western directions, i.e. toward the potential residential development, with lead, copper, zinc, petroleum products, polychlorinated biphenyls, benzo[a]pyrene, and xylene isomers was revealed. Conclusion. The resulting data provides evidence for the adverse environmental impact of the Krasny Bor Landfill. The territory of the Landfill has been stabilized to allow further trouble-free development of a complex of measures on a scheduled basis.