bluuebunny/crossref_metadata_2025 huggingface dataset:
In vitro evaluation of the antibacterial behavior of a self-etch adhesive associated with chlorhexidine
Authors: RODRIGUES Roberta Bento , GIOPPO Nereida Mello , BUSATO Priscilla do Monte Ribeiro , MENDONÇA Marcio José , CAMILOTTI Veridiana
Published: March 2019

Abstract Introduction Adhesive technology has been developed quickly since its introduction about fifty years ago. Its goal is to produce a close contact within enamel and dentin. Failures in this process could result in microleakage, and allow the infiltration of bacteria, fluids and ions. Recent studies have been shown the use of chlorhexidine associated with adhesive systems can be able to inhibit the bacteria action. Objective The aim of this study was to evaluate the addiction of different percentages of chlorhexidine to a self-etch adhesive. Methodology The solution of digluconatechlorhexidine was increased to the primer of the two pass self etch adhesive to create a 0.5%, 1.0% and 2.0% chlorhexidine primer solution and after they were distributed in four groups (G1, G2, G3 and G4). Saliva samples (N=10) were used to test bacteria activity. Result They were spread in a blood medium with filter paper disks containing the different treatments. After the incubation, the inhibitions halos formation were evaluated. Conclusion This study demonstrated that, in vitro, the addition of different percentages of chlorhexidine digluconate to the self-etch adhesive induced inhibited halos at bacteria of saliva samples, independent from their concentration.
Contributions of a Teacher Training Program to Inclusive Education
Authors: Gesser Marivete , Martins Reginaldo Medeiros
Published: March 2019

Abstract This study aimed to identify the contributions of the discipline of “Disabilities and Inclusion” offered by the Specialization Course on Gender and Diversity at School (GDS) to promote inclusive educational processes for people with disabilities in basic education. Nine GDS students who were professionals from educational area participated in the research. The information was obtained through a focus group, recorded with the participants’ consent and analyzed based on the thematic content analysis method. The results indicated that there was a change in conception of disability, previously based in charitable and/or in biomedical conceptions, now more in line with the Social Model of Disability and with the precepts of the Convention on the Rights of Persons with Disabilities. In addition, the knowledge obtained by the participants contributed to the construction of pedagogical strategies more focused on the inclusion of people with disabilities considering their specificities.
ALFABETIZAÇÃO CIENTÍFICA E CRIANÇA: ANÁLISE DE POTENCIALIDADES DE UMA BRINQUEDOTECA
Authors: MARQUES AMANDA CRISTINA TEAGNO LOPES , MARANDINO MARTHA
Published: March 2019

RESUMO: Este artigo analisa o potencial de uma brinquedoteca para a promoção da alfabetização científica (AC) de crianças. Para a produção de dados, realizou-se observação e registro de três áreas de uma brinquedoteca. A análise foi realizada com base na ferramenta teórico-metodológica de indicadores e atributos de alfabetização científica. Como principais referenciais teóricos destacam-se discussões sobre alfabetização científica como processo que ocorre dentro e fora da escola e implica a apropriação de elementos da cultura científica com vistas à participação social. A discussão sobre infância foi realizada com base nos aportes da Sociologia da Infância, e brincar/brinquedo foram conceituados especialmente a partir de Brougère. Conclui-se que a brinquedoteca, ao inserir em seu espaço, áreas e objetos que remetem a temas científicos, pode contribuir para o processo de AC de crianças, possibilitando a aproximação entre culturas infantis e elementos da cultura científica.
CONFIGURAÇÕES TEÓRICAS DA PRODUÇÃO DOUTORAL BRASILEIRA SOBRE RECURSOS DIDÁTICOS NO ENSINO DE BIOLOGIA (1972-2014)
Authors: FREITAS LILLIANE MIRANDA , GHEDIN EVANDRO
Published: March 2019

RESUMO: Nesta pesquisa analisamos os fundamentos teóricos da produção doutoral brasileira sobre Recursos Didáticos no Ensino de Biologia (EB) (1972-2014). Para isso, realizamos: i) sistematização de 876 dissertações e teses em EB (2005-2014); ii) análise hermenêutica de 24 teses sobre o foco temático Recursos Didáticos em EB (1972 a 2014), para análise do quadro teórico. Foram identificados fundamentos teóricos relacionados às abordagens Construtivistas, Perspectivas Críticas, Teorias da Linguagem e Teoria da Transposição Didática. Consideramos que as pesquisas sobre Recursos Didáticos em EB no Brasil estão fundamentadas em um compêndio teórico particular, que não mais se ancora apenas em referências gerais da Educação, Psicologia ou Filosofia, mas leva em conta a realidade educacional brasileira e as especificidades dos conteúdos biológicos e científicos.
ENGAJAMENTO DE ESTUDANTES EM INVESTIGAÇÃO ESCOLAR SOBRE CIRCUITOS ELÉTRICOS SIMPLES
Authors: FARIA ALEXANDRE F. , VAZ ARNALDO M.
Published: March 2019

RESUMO: Buscam-se objetivos variados com as atividades desenvolvidas no laboratório escolar de Física. Entre as várias propostas para esse ambiente de aprendizagem estão aquelas que o concebem a partir de atividades investigativas, com diferentes níveis de abertura. Neste trabalho, apresentamos os resultados de uma investigação sobre o engajamento de estudantes do Ensino Médio durante o desenvolvimento de uma atividade investigativa semiaberta sobre circuitos elétricos simples. O objetivo do trabalho foi caracterizar o engajamento desses estudantes nessa atividade. O estudo foi conduzido numa escola pública brasileira, vinculada à Rede Federal de Educação Profissional, Científica e Tecnológica, localizada na cidade de Belo Horizonte/MG (Brasil). A coleta de dados envolveu gravações de áudio e vídeo de grupos de três a quatro estudantes no laboratório de física da 1ª série do Ensino Médio. A análise dos dados baseou-se no conceito e nos indicadores de engajamento estabelecidos na literatura de pesquisa. Os resultados mostram que embora todos os grupos tenham demonstrado algum envolvimento com a atividade, nem todos os estudantes se engajaram na resolução das tarefas propostas. Entre os que se engajaram nas tarefas, percebe-se variação na qualidade desse envolvimento.
ASPECTOS SOCIAIS NA ESCOLHA PELA LICENCIATURA EM FÍSICA: UMA ANÁLISE EM UNIVERSIDADES DO RIO GRANDE DO SUL
Authors: Silva Luisa Mariana da , Barbosa Rafael de Carvalho
Published: March 2019

RESUMO: Este trabalho discute alguns aspectos sociais associados à escolha pela Licenciatura em Física em duas instituições de Ensino Superior: a Universidade Federal de Santa Maria (UFSM) e a Universidade Federal do Rio Grande do Sul (UFRGS). Primeiramente são apresentados os resultados referentes à origem escolar dos concorrentes. Observou-se que a maior parte dos alunos realizou o Ensino Médio em escolas públicas. Posteriormente, foi analisada a origem familiar desses candidatos. Em relação à escolaridade, a maior parte é oriunda de famílias em que os pais possuem, em geral, o Ensino Médio completo. Em relação à origem econômica, é possível dizer que esses candidatos são oriundos de classes menos favorecidas. Nossos resultados sugerem um certo padrão no perfil dos que buscam o curso de Licenciatura em Física nas instituições estudadas.
Elderly care: performance of interventions carried out by More Doctors Program professionals
Authors: Fassa Maria Elizabeth Gastal , Tomasi Elaine , Fassa Anaclaudia Gastal , Thumé Elaine , Wachs Louriele , Santos Leonardo Pozza dos , Volz Pamela , Rodrigues Leandro , Facchini Luiz Augusto
Published: March 2019

ABSTRACT In order to assess coverage and quality of elderly care, a cross-sectional study of 204 interventions of Family Health Specialization students of UFPel was conducted, both connected and not connected to the More Doctors Program (PMM). The coverage difference between the third and first months of intervention and the percentage at the end of the third month were calculated in order to obtain quality indicators. An average increase in coverage of 35.7 percentage points (pp) (32.9, 38.6) was found: 42.1 pp (38.6, 45.7) and 26.1 pp (22.3, 30) were, respectively, related and not related to PMM. Brief Multidimensional Assessment (AMR), up-to-date clinical examination and assessment of the need for dental treatment showed better results in interventions conducted by PMM professionals. The interventions were effective regardless of supply and nationality, obtaining significantly better results those conducted by PMM professionals, especially Cubans.
Implementation of a Mental Health internship in a higher education institution
Authors: Figueiredo Felipe Pinheiro de , Bernuci Marcelo Picinin , Oliveira Raquel Gusmão de , Ideriha Nilce Marzolla , Massuda Ely Mitie , Yamaguchi Mirian Ueda
Published: March 2019

ABSTRACT The approval of the More Doctors Program has triggered a number of readjustments of the National Curricular Guidelines (DCNs) for Medical Education, like the creation of a mental health internship integrated into the health service and community. Due to this demand, the higher education institutions have been encouraged to innovate in their teaching-learning methodologies in order to guarantee a generalist, humanistic and critical professional education. We report the experience of a private higher education institution in the implementation of a mental health internship in consonance with the new DCNs. We present all the steps of the implementation, reporting the participation of students, supervisors, preceptors and managers. We show that a mental health internship linked to different levels of healthcare promotes learning conditions capable of favoring the decentralization of care and application of the community/family approach.
Toxoplasma gondii and Neospora caninum infections in synanthropic rodents from Argentina
Authors: Dellarupe Andrea , Fitte Bruno , Pardini Lais , Campero Lucía María , Bernstein Mariana , Robles María del Rosario , Moré Gastón , Venturini María Cecilia , Unzaga Juan Manuel
Published: March 2019

Abstract Toxoplasma gondii and Neospora caninum are closely related coccidian parasites (phylum Apicomplexa). This is the first study from urban synanthropic rodent species that involved serological and molecular diagnosis of T. gondii and N. caninum infection, and genotyping of T. gondii in Argentina. A total of 127 rodent samples were trap captured: Mus musculus (n = 78), Rattus norvegicus (n = 26) and Rattus rattus (n = 23). Antibodies against T. gondii and N. caninum were detected by IFAT in 32.8% (40/122) and 0.8% (1/122) of rodent samples, respectively, demonstrating contact with these protozoans. Additionally, T. gondii DNA was detected in 3.3% (4/123) of rodent central nervous system samples and 2 samples were genotyped by multilocus nPCR-RFLP. Neospora caninum DNA was not detected by PCR. The 2 genotyped samples were type III allele for all markers except for SAG-1 (type I for Rat1Arg and type II/III for Rat2Arg) and were identified as #48 and #2 (likely) according to the allele combinations reported on Toxo DB (Toxo-DB). The results of the present study revealed a wide distribution of T. gondii and less for N. caninum, in synanthropic rats and mice in the studied area.
Examining the kinematics and energy of the four-sided impact roller
Authors: Bradley Andrew C. , Jaksa Mark B. , Kuo Yien-Lik
Published: March 2019

The soil-improvement method rolling dynamic compaction (RDC) utilises the mechanical energy imparted by an ‘impact roller’ module as it is towed. The motion exhibited by this module and the energy delivered into the soil has not yet been addressed in the literature. The kinematics of RDC, with particular reference to the four-sided 8 t impact roller, was investigated in this study. The motion of the module was examined in the field using high-speed photography. Vector velocities of the rolling module were obtained for the impact roller passing over a controlled test bed at a typical operating speed of 10 km/h. It was observed that the module delivered an average of 23 ± 4 kJ per blow to the soil.
Testing and modelling of geopolymer concrete members with fibreglass reinforcement
Authors: Elchalakani Mohamed , Karrech Ali , Dong Minhao , Mohamed Ali M. S. , Li Gang (Kevin) , Yang Bo
Published: March 2019

The poor durability of ordinary Portland cement concrete and the corrosion of conventional steel reinforcement have a major impact on the viability, safety and serviceability of reinforced concrete structures, particularly in marine environments. Geopolymer concrete (GPC) reinforced with corrosion-free glass-fibre-reinforced polymer bars is ideal for projects such as bridge piers in coastal zones where corrosion is severe. This paper reports on an examination into the behaviour of this novel construction material under axial, combined and flexural loading and validation of a numerical model of the material. To this end, 11 GPC specimens constructed with various stirrup spacings were subjected to a range of loading conditions. The concrete was modelled using the widely used concrete damage plasticity model and linear elastic behaviour was used for the fibreglass bars and stirrups. The predicted axial load–deflection responses were in close agreement with the experimental data, especially for concentrically loaded columns. The load capacities of eccentrically loaded columns and beams were slightly overpredicted by the model due to a tendency of the fibreglass stirrups to open up prematurely.
KARŞILAŞTIRMALI İHRACAT PERFORMANSI (CEP) İNDEKSİNE GÖRE TÜRKİYE’NİN AB28 ADAY ÜLKELERİ KARŞISINDAKİ REKABET GÜCÜ (2006-2016)
Authors: KUŞAT Nurdan
Published: March 2019

2017 yılı sonu itibariyle Sırbistan, Karadağ,
Arnavutluk, Makedonya ve Bosna Hersek aday ülke, Kosova ise potansiyel aday
ülke statüsüyle AB28’le diyalog içerisindedir. Çalışmada AB’ye tam üyelik
başvurusu yaklaşık 60 yıla ulaşan Türkiye’nin, bu aday ülkeler karşısındaki
karşılaştırmalı ihracat performansı seçilmiş bazı sektörler çerçevesinde hesaplanmaktadır.
Bu hesaplamada Donges ve arkadaşlarının 1982 yılında geliştirdiği
“Karşılaştırmalı İhracat Performansı” (Comparative Export Performance – CEP)
indeksi’nden yararlanılmaktadır. Çalışmanın tarih aralığı 2006-2016 ve
sektörler imalat, tarım, gıda, tekstil, demir çelik ve kimyasallar sektörleri
şeklinde belirlenmiştir. Elde edilen bulgular Türkiye’nin tekstil sektöründeki
ihracat performansını ve rekabet gücünü teyit ederken; imalat sektöründe
Makedonya, tarım ve gıda sektörlerinde Karadağ ve Sırbistan, demir çelik
sektöründe Makedonya ve Arnavutluk, Kimyasallar sektöründe ise Makedonya ve
Sırbistan yüksek ihracat performansları ve rekabet avantajları ile dikkat
çekmektedir.
WHAT DRIVES WORKING CAPITAL LEVELS?
Authors: DORSMAN André , WESTERMAN Wim
Published: March 2019

This study examines factors that influence the level
of working capital. This can be measured by the length of the cash conversion
cycle (CCC), the period it takes for investments in inventory to generate cash.
The CCC is influenced by contingencies: cultures and habits, rules and
regulations, information systems, economic conditions, markets and operations,
as well as general factors: asset size, sales growth, solvency and liquidity. The
article furthermore discusses several specific drivers of working capital, which
are related to the accounts payables, inventory and accounts receivables cycles.
While the created framework calls for country- and business-wise adaptations, it
can yet inspire corporate managers and academic researchers, such as shown by an
example case drawn from real world experiences. Two other cases reveal though,
that the corporate philosophy cannot be neglected as a driver of working
capital levels.
Magnesiothermal synthesis and consolidation of multicomponent powder ceramics in the Zr–Si–Mo–B system
Authors: Astapov A. N. , Pogozhev Yu. S. , Lemescheva M. V. , Rupasov S. I. , Vershinnikov V. I. , Lifanov I. P. , Rabinskiy L. N.
Published: March 2019

The work aims to obtain composite powder ceramics based on ZrB2–ZrSi2–MoSi2 by the self-propagating high-temperature synthesis (SHS) according to the scheme of magnesium thermal reduction from oxide raw materials, as well as its subsequent consolidation by hot pressing (HP). The combustion of the reaction mixtures is characterized by rather high adiabatic temperatures in the range of 2060 to 2120 K and burning rates in the range of 8,3 to 9,4 g/s. The yield of the end product with magnesiothermal reduction is 34–38 %. The resulting powder contains 13–47 % ZrB2, 21–70 % ZrSi2, 2–32 % ZrSi, and 10–18 % MoSi2 depending on the composition of the initial reaction mixture. It is characterized by high structural homogeneity and consists of composite particles of polyhedral shape with an average about 8 microns in size. The structure of ceramics consolidated by the HP method from SHS powder is homogeneous and includes ZrB2 needle grains distributed in a ZrSi2 matrix, MoSi2 inclusions of various morphology and ZrSiO4 silicate, distributed along the grain boundaries of ZrSi2. The samples obtained by HP are characterized by a high degree of homogeneity of the chemical composition and a residual porosity of 2,5–7,4 %.
On some prospects for further development of Academician V.N. Antsiferov ideas in the field of structural powder materials
Authors: Dorofeyev V. Yu.
Published: March 2019

The paper discusses the further development of some ideas of V.N. Antsiferov and the scholar school created by him in obtaining structural powder materials and products. The prospects for obtaining concentration-inhomogeneous steels and trip-steels are noted. The great potential lies in the control of the thickness and volume of the zone of deformation martensitic transformation occurring during fracture. It is advisable to continue the preparation of fullerene- and nitrogen-containing powder compositions and to study the structural heredity of powder steels. The possibility of the synthesis of fullerene-containing phases during the liquidphase sintering of the iron–cast iron and iron–graphite compositions and their subsequent redistribution in the bulk of the material during dynamic hot pressing is worth noticing. Producing nitrogen-containing steels by mechanical activation of powders followed by sintering in dissociated ammonia is advisable to use for obtaining not only wear-and corrosion-resistant materials, but also heat-resistant ones. The studies on the decomposition of supercooled austenite in powder steels of various doping systems with different technological backgroung (sintered, hot-deformed, infiltrated, etc.) are promising. The potential for development is the research of hot-deformed concentration-inhomogeneous materials, obtained, in particular, on the basis of powders of the Distaloy type. The techniques developed by the Antsiferov’s school are significant. The most important one is the method for determining the concentration variation coefficient, as well as a magnetometric complex and a mathematical model, which makes it possible to predict the decomposition of supercooled austenite. Antsiferov’s works can be used for obtaining lean powder steels with the lower bainite structure, which provides the optimal combination of strength and toughness.
Phase transformations and properties of concentration-inhomogeneous magnetic materials based on the Fe–30%Cr–27%Co system
Authors: Kozvonin V. A. , Shatsov A. A. , Ryaposov I. V. , Generalova K. N. , Spivak L. V.
Published: March 2019

The phase and structural transformations of a powder magnetically hard alloy of the system Fe–30%Cr–27%Co–1%Si–0,07%B with a metastable α1+α2 phase composition, a high content of cobalt, and a high level of magnetic properties were studied. The density and coefficient of variation of the concentration of the main elements of the sintered blanks at the level of deformable analogs are achieved by sintering in the α-phase with contact melting in the presence of a «vanishing» liquid phase formed due to the addition of silicon and boron ferroalloys. A kinetic approach to the development of a competitive hard magnetic alloy with a high proportion of the strongly magnetic phase is proposed. The effect of boron additions on the incubation period of the formation of an undesirable σ-phase and the temperature range of the concentration stratification of the α-solid solution on the strongly magnetic α1-phase and the weakly magnetic α2-phase were established. Optical microscopy, X-ray phase analysis and differential scanning calorimetry were used to determine temperature and time parameters of heat treatment of the alloy, including hardening, thermomagnetic treatment (TMT) and final aging, providing the required combination of Hc and Br by increasing the stability of the metastable α-phase up to 20 minutes in the interval temperatures of spinodal decomposition α → α1 + α2. The greatest increase in magnetic properties after TMT, observed at the 1st and 2nd steps of final aging, is related to the decomposition of the α-solid solution and the formation of subgrain boundaries. Elements of the obtained structure are characterized by submicron and nanometric sizes, which correlate with the research results on deformable alloys based on the Fe – Cr – Co system. The anisotropic α1+α2-structural state achieved by thermomagnetic treatment provided an increase in the magnetic properties of the studied 30H27KSR powder alloy to 30 % and the squareness coefficient of the magnetic hysteresis loop equal to 0,82 .
decline of the Knysna elephants: Pattern and hypotheses
Authors: Moolman Lizette , Ferreira Sam M. , Gaylard Angela , Zimmerman Dave , Kerley Graham I.H.
Published: March 2019

Understanding and identifying drivers of local population declines are important in mitigating future risks and optimising conservation efforts. The Knysna elephants have, after being afforded protection since the early 1900s, declined to near extinction today. We propose three hypotheses as to why the Knysna elephant population declined. The refugee hypothesis suggests that anthropogenic activities forced the elephants to take refuge in the forest and that the low-quality food acted as the primary driver of decline. The illegal killing hypothesis suggests that the elephants adapted to the forest and its immediate fynbos habitat, with the decline being a consequence of illegal kills. The stochastic founder population hypothesis postulates that the population size and structure left it vulnerable to demographic stochasticity. We critically reviewed available evidence for these hypotheses and found that, although the historical elephant range decline most likely resulted through the refugee hypothesis, the weak demographic and life-history information limits elimination of either of the other hypotheses. We touch on the implications for decision-makers and draw attention to information requirements.
Significance:

We highlight the knowledge and management challenges which exist for small, threatened populations of which long-term demographic data are sparse.
We provide the first unbiased evaluation of multiple drivers that may have caused the decline of the Knysna elephants.
bioinformatics pipeline for rare genetic diseases in South African patients
Authors: Schoonen Maryke , Seyffert Albertus S. , Van der Westhuizen Francois H. , Smuts Izelle
Published: March 2019

The research fields of bioinformatics and computational biology are growing rapidly in South Africa. Bioinformatics pipelines play an integral part in handling sequencing data, which are used to investigate the aetiology of common and rare diseases. Bioinformatics platforms for common disease aetiology are well supported and continuously being developed in South Africa. However, the same is not the case for rare diseases aetiology research. Investigations into the latter rely on international cloud-based tools for data analyses and ultimately confirmation of a genetic disease. However, these tools are not necessarily optimised for ethnically diverse population groups. We present an in-house developed bioinformatics pipeline to enable researchers to annotate and filter variants in either exome or amplicon next-generation sequencing data. This pipeline was developed using next-generation sequencing data of a predominantly African cohort of patients diagnosed with rare disease.
Significance:

We demonstrate the feasibility of in-country development of ethnicity-sensitive, automated bioinformatics pipelines using free software in a South African context.
We provide a roadmap for development of similarly ethnicity-sensitive bioinformatics pipelines.
Reclassification of early stage breast cancer into treatment groups by combining the use of immunohistochemistry and microarray analysis
Authors: Grant Kathleen A. , Myburgh Ettienne J. , Murray Elizabeth , Pienaar Fredrieka M. , Kidd Martin , Wright Colleen A. , Kotze Maritha J.
Published: March 2019

Immunohistochemistry (IHC) is routinely used to approximate breast cancer intrinsic subtypes, which were initially discovered by microarray analysis. However, IHC assessment of oestrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor-2 (HER2) status, is a poor surrogate of molecular subtype. Therefore, MammaPrint/BluePrint (MP/BP) microarray gene expression profiling is increasingly used to stratify breast cancer patients into different treatment groups. In this study, ER/PR status, as reported by standard IHC and single-gene mRNA analysis using TargetPrint, was compared with molecular subtyping to evaluate the combined use of MP/BP in South African breast cancer patients. Pathological information of 74 ER/PR positive, HER2 negative tumours from 73 patients who underwent microarray testing, were extracted from a central breast cancer genomics database. The IHC level was standardised by multiplying the intensity score (0–3) by the reported proportion of positively stained nuclei, giving a score of 0–300. Comparison between mRNA levels and IHC determination of ER/PR status demonstrated a significant correlation (p<0.001) for both receptors (ER: 0.34 and PR: 0.54). Concordance was shown in 61 (82%) cases and discordance in 13 (18%) of the 74 tumours tested. Further stratification by MP/BP identified 49 (66.2%) Luminal A, 21 (28.4%) Luminal B and 4 (5.4%) Basal-like tumours. Neither IHC nor TargetPrint could substitute BP subtyping, which measures the functional integrity of ER and can identify patients with false-positive tumours who are resistant to hormone therapy. These findings support the implementation of a pathology-supported genetic testing approach combining IHC and microarray gene profiling for definitive prognostic and predictive treatment decision-making in patients with early stage breast cancer.
Significance:

Single-gene genomic oestrogen and progesterone receptor reporting adds limited additional information to the molecular stratification of breast cancer tumours and does not supersede the immunohistochemistry results.
Neither single-gene genomic mRNA nor immunohistochemistry reporting of oestrogen and progesterone receptor status can replace the combined use of MammaPrint/BluePrint genomic molecular subtyping.
Reliable distinction between Luminal A and B type tumours is not possible using immunohistochemistry or single-gene genomic mRNA assessment of oestrogen/progesterone and HER2 receptor status.
Combining immunohistochemistry and microarray gene profiling enables the identification of endocrine treatment resistant hormone-positive tumours lacking ERα function (Basal-like), despite positive expression at the protein and single-gene RNA level.
Межфазное распределение сорбиновой кислоты при экстракции сополимером N-винилформамида с 1-винил-3,5-диметилпиразолом
Authors: Mokshina Nadezhda Ya. , Pakhomova Oksana A. , Shatalov Gennadiy V. , Tarasov Dmitriy P.
Published: March 2019

С целью изучения экстракции сорбиновой кислоты из объектов со сложной матрицей изучено межфазное распределение сорбиновой кислоты в системе сополимер N-винилформамид – 1-винил-3,5-диметилпиразол – хлорид аммония. Рассчитаны коэффициенты распределения и степень извлечения консерванта при различных соотношениях фаз и концентрации раствора сополимера. Установлено влияние рН на экстракцию сорбиновой кислоты, предложен механизм ее взаимодействия с экстрагентом. Определение сорбиновой кислоты в водно-солевой фазе осуществлено методом капиллярного электрофореза в выбранных условиях.

 

 

 

ЛИТЕРАТУРА

Luk E., Yager M. Konservanty v pishevoy promyshlennosti. Svoistva i primenenie. [Preservatives in the Food Industry. Properties and Application]. Moscow, GIORD Publ., 2003, 256 p. (in Russ.)

Mokshina N. Ya., Bykovskiy D. V., Shatalov G. V., Pakhomova O. A. Condensed Matter and Interphases, 2013, vol. 15, no. 4, pp. 423-427. URL: http://www.kcmf.vsu.ru/resources/t_15_4_2013_009.pdf (in Russ.)

Korenman Ya. I. Koeffitsienty raspredeleniya organicheskix soedineny. Spravochnik. [Distribution Coefficients of Organic Compounds. Handbook]. Voronezh, Voronezh State Un-t Publ., 1992, 336 p. (in Russ.)

Mokshina Ya., Bykovskiy D. V., Shatalov G. V., Pakhomova O. A. J. of Analyt. Chem., 2016, vol. 71, no. 2, pp. 201-204. https://doi.org/10.1134/s1061934816020106 

Shatalov G.V., Luvlinskaya M. S. Pakhomova O. A., Mokshina N. Ya., Kuznetsov V.A. Russian J. of Applied Chem., 2016, vol. 89, no. 1, pp. 112-118. https://doi.org/10.1134/s1070427216010225

Bykovskiy D. V., Kuznetsov V. A., Mokshina N. Ya., Poyarkova T. N., Shatalov G. V., Izvestiya Vysshikh Uchebnykh Zavedeniy Khimiya Khimicheskaya Tekhnologiya, 2014, vol. 57, no. 7, pp. 73-77. (in Russ.)

Mokshina N. Ya., Pakhomova O. A., Shatalov G. V., Kosinova I. I. Izvestiya Vysshikh Uchebnykh Zavedeniy Khimiya Khimicheskaya Tekhnologiya, 2019, vol. 62, no. 1. pp. 4-10.  https://doi.org/10.6060/ivkkt.20196201.5763  (in Russ.)

Bykovskiy D. V., Mokshina N. Ya., Pakhomova O. A., Shatalov G. V., Luvlinskaya M. S. «Polymers-2017», Proceedings of the VII Rus. Kargin Conference, June 13-17, 2017, Moscow, 2017, p. 262. (in Russ.)

Kirsh Yu. E. Poli-N-vinilpirrolidon i drugie poli-Nvinilamidy [Poly-N-vinylpyrrolidone and other poly-N-vinyl amides]. Moscow, Nauka Publ., 1998, 254 р. (in Russ.)

Korenman J. I., Zykov A.V., Mokshina N. I., Bykovskiy D. V., Shatalov G. V. Russian Journal of Physical Chemistry A, 2011, vol. 85, no. 11, pр. 2000-2004.  https://doi.org/10.1134/s0036024411110185

Kartsova L. A. Problems of Analytical Chemistry. 18. Capillary Electrophoresis. Moscow, Nauka Publ., 2014, 438 p. (in Russ.)
The effect of Vehicle traffic on walkability at the old city of Sulaimaniyah
Authors: Tawfeeq Hawar , Ali Assist. Prof. Dr. Amjad , Yousif Mayada
Published: March 2019

Most of the cities at the old urban fabric heritage area featured with specific characteristics. Sulaymaniyah city has such an old and heritage area. The fabric features similar specifications to those of the most cities of the Islamic world, in terms of its streets, alleys and lanes. Since roads and alleys where forming a nested organic shape served the urban movement in full conformity which meets the complete walkability requirements through alleys and streets. The change and development of the transport systems and then the penetration of these modern systems in old alleys which are not designed and not suitable for such systems have made distraction in general traffic and the walkability in particular. This research tries to focus on this point by studying the factors that affect walkability at the old city of Sulaymaniyah and looks at the impact of vehicular traffic on this possibility by examining a specific zone of the old city and comparing this with global criteria and standards used in walkability at such similar areas. To reach the goal of the impact of vehicular traffic on walkability at the traditional area of Sulaymaniyah, the research concluded that because of the nature of the alleys and streets of this area with specific privacy, the walkability is adversely affected.
The Impact of the Intellectual Factor of the Kurdish man on the Identity of Architecture / Duhok as a case study
Authors: Farhan Rana , Ali Assist. Prof. Dr. Alan
Published: March 2019

The fact that some Kurdish cities in Kurdistan of Iraq are floundering in the issue of architectural identity and the emergence of different opinions about the nature of Kurdish architecture, between those who support being part of Islamic architecture and others adopt modern architecture to support contemporary political orientation, with the emergence of other individual orientations. This is a motive for conducting this research and diagnosing the intellectual position of the man and the Kurdish society and monitoring the problems he suffers in the subject of identity in general, which reflects on the architectural output and the architectural identity.

The current research aims at diagnosing the intellectual position of man and the Kurdish society and its impact on the subject of identity in general and on architectural identity in particular. This research attempts to verify the following hypothesis: The architectural output is directly influenced by the intellectual position of man and the Kurdish society, It represents a reflection of the position of the society of identity, and that the identity of the architectural identity of crises is only a reflection of the crises in the identity of society.
The effect of Future Expansion on Architectural Form of University Buildings Sulaimani University - the Old Campus as a Case Study
Authors: Ali Assist. Prof. Dr. Alan , Salih Chro
Published: March 2019

Future expansion is an extension of an existing building by adding new parts or connecting with buildings in order to create new expression and function for the building, expansion in general deals with future situation, building as it doesn’t need expansions, but within time factor it needs the expansion and the changes. The expansion in educational buildings is very important and needed for the changes of the learning process , that’s why , the design of the educational buildings should be very re-actionable with the changes , beside reserving  the formal  unity of the new and old  buildings and the needs of the learning process .

    This research ,study the relationship between Future Expansion on Architectural Form and the effect of Future Expansion on the architectural form of Kurdistan Region of Iraq university buildings, the problem of the research is lake of knowledge in studying the effects of expansion in the formal unity  in university architecture, for that the study focused on two parts , the first is the theoretical side and the conceptual thoughts of the factors of the study , the second one is the practical study and the graphical analyzing of the case study(old campus of Sulaimani University), and discussing the outcomes ,and the conclusions of the study.
Study the environmental effects of private electrical generators for some locations in Kirkuk city
Authors: Ali Shno
Published: March 2019

Two traces of environmental pollution from private electrical generators have been dealt with within the study in Kirkuk city by choosing determined regions. First trace was contain computing concentrations of primary air pollutants that emitted from electrical generators which include (CO,CO2, NO,HC), then compared it with Iraqi standards for pollutants that emitted from exhaust gas of electrical generators, higher concentration of CO gas was found in April month from generators of Asra and Mafqodin which was 4.4ppm higher than the Iraqi standards ,generally higher concentration of other pollutants were found also. Second trace was includes measuring noise pollution from these generators, higher value of LAeq was in Raheem Awa region 102.55dBA which was exceeding the limits from EPA standards which determined 80dBA as higher value in residential regions, and also exceeding WHO standards which determined higher limits of noise 50-55dBA , while lower value of LAeq was in Tisin region 91.02dBA because the generators in this region have cover absorbent to noise as compared to other generators in the study.
DIRECT SYNTHESIS AND CRYSTAL STRUCTURE OF BIS(BROMIDO-BIS(1,10 PHENANTHROLINE)-COPPER(II)) NITROPRUSSIDE DIMETHYLFORMAMIDE SOLVATE
Authors: Vassilyeva O. , Buvaylo E. , Skelton B.
Published: March 2019

The title compound, [Cu(C12H8N2)2Br]2[Fe(CN)5(NO)]·C3H7NO, was prepared by the self-assembly of nitroprusside anion and Cu cation containing a bidentate amine in the reaction of copper powder and sodium nitroprusside with NH4Br and 1,10-phenanthroline (phen) in dimethylformamide (DMF). The complex is formed of discrete [Cu(phen)2Br]+ cations, nitroprusside [Fe(CN)5(NO)]2– anions and DMF molecules of crystallization. The cation has no crystallographically imposed symmetry; the metal atom coordinates two nitrogen atoms of two phen molecules and bromide ion. The copper coordination geometry is intermediate between a square pyramid and a trigonal bipyramid. The [Fe(CN)5(NO)]2– anion is located on an inversion centre with the nitrosyl group modelled as disordered with one of the CN groups. The DMF solvent molecule was found to be disordered about the crystallographic inversion centre; geometries were restrained to ideal values. In the solid state, alternating layers of cations and of anions plus DMF molecules are stacked along the b axis.
The basic incentive mechanism of social activity of the individual
Authors: Grigoryeva M.V.
Published: March 2019

The main provisions of the system-diachronic approach to the study of the phenomenon of social activity of the individual are developed. Social activity, from the point of view of the system-diachronic approach, should be considered as a multi-level education, including cognitive, emotional-evaluative, motivational and socio-psychological phenomena combined in acts of interaction between the individual and the social environment undergoing qualitative changes in time. Description of the past, present and future state of the system “personality — social group”, the identification of elements of the system, progressively or regressively transformed, are the necessary conditions for a system-diachronic analysis of social activity. The basic incentive mechanism of the person’s social activity is revealed — diachronic mismatch in the system “personality — social environment”, as well as private cognitive, emotional-evaluative, motivational and socio-psychological mechanisms of social activity of the individual and the group.
Volitional qualities as predictors of the importance of social activity of students
Authors: Shamionov R.M. , Grigoryeva M.V. , Grigoryev A.V.
Published: March 2019

The problem of studying the determinants of social activity of students is considered. It is assumed that there are similarities and differences in the subjective and personal determination of the directions of social activity of students. The study involved 261 students (the average age was 20.11 SD=1.2; men — 41%). The standardized questionnaire of volitional qualities of personality (M.V. Chumakov) and original scales for assessing the directions of social activity and subjective assessment of the degree of social activity of students are used. The most (leisure-communicative, educational-developing, activity in the sphere of self-development) and least (voluntary, spiritual-religious and socio-political) expressed directions of social activity are established. It is shown that the realization of different types of social activity is determined by different combinations of subjective and personal properties.
The role of the group type and the characteristics of self-attitude in students’ social perception
Authors: Baleva M.V.
Published: March 2019

The article deals with the problem of disparate studies in social perceptions of different types of groups, which impede the understanding of its fundamental mechanisms. Different types of social groups appear in the research as stimulus descriptions of their artificial analogues, singled out according to ethnic, ideological and stratification criteria. As a mediating factor of social perception, the features of subject’s self-attitude (self-acceptance and self-rejection) are considered. The study involved 307 females and 109 males from 17 to 22 years old (M = 18.92, SD = 0.93). It was found that perceiving of different types of social groups determines the varying degrees of stereotyping and bias intensity. Both of these phenomena are most observable for the groups identified by stratification criterion. Ingroup favoritism is also more conspicuous for the subject’s “ideological” ingroup in comparison with the groups of different types. It was also shown that self-attitude plays a facilitating role in the manifestations of ingroup favoritism: both self-acceptance and self-rejection contribute to the growth of perceptional bias, but do not “participate” in outgroup stereotyping.
Рredictors of behavioral strategy choice among Russians in intercultural conflict
Authors: Batkhina A.A. , Lebedeva N.M.
Published: March 2019

The article describes the main results of the study investigating the predictors of the behavioral strategy choice among Russians in an imaginary conflict with a representative of the North Caucasus ethnic groups. The theoretical and methodological basis of the research includes the dual concern model, the refined theory of personal values by S. Schwartz and the concept of intergroup anxiety by W. Stefan and C. Stefan. As the predictors of the behavioral strategy choice in a conflict, following personal values were considered: Openness to change, Conservation, Self-Transcendence and Self-Enhancement. The role of intergroup anxiety was tested as a moderator affecting the link between values and behavior in the conflict. Cultural identity and self-esteem were considered as control variables. The study involved 214 ethnic Russians living in Russia (73 men, 141 women, age M = 31.96, SD = 10.21). Respondents were involved in the study helping by “snowball” method. The following methods were used: Organizational Conflict Inventory by M. Rahim in the modification of J. Oetzel, PVQ-R by S. Schwartz, the intercultural communication apprehension scale by J. Neulep and D. McKrosky, and the certain scales from the MIRIPS questionnaire. The results of the path analysis showed that the choice of the competing is positively related to the values of Self-Enhancement and is negative with the values of Self-Transcendence. The choice of collaborating strategy has a positive relation with the values of Self-Transcendence and Openness to change. The choice of an avoiding strategy is positively related to the values of Conservation and intergroup anxiety. The choice of the accommodating did not reveal a significant influence of values but this strategy is in positive connection with cultural identity and in a negative connection with self-esteem. Intergroup anxiety is a moderator of the relationship between the value of Openness to change and the collaborating strategy. The obtained results can be used in the development of recommendations in the field of intercultural communication and in the settlement of intercultural conflicts.
Attitudes towards Biobank Donation Among University Community
Authors: Antonova N.A. , Eritsyan K.Y. , Tsvetkova L.A.
Published: March 2019

Worldwide significant efforts are invested in building biobanks—specialized facilities for storing biological materials for research and medical purposes. The successful functioning of biobanks depends directly on people’s willingness to donate their biological materials. Fragmentary empirical studies of people’s attitudes toward donations to biobanks have been undertaken in Russia. The goal of this study was to measure at titudes toward biobank donation among Russians population and to evaluate potential sociopsychological factors that play a role in a person’s readiness to become a donor. Data from 542 students and 254 scientific staff at St. Petersburg State University were collected from group-administered paper-and-pencil and online surveys respectively. Both students (74%) and scientific staff (52%) indicated a relatively high level of readiness to become biobank donors. Regression analysis showed that refusal to be a biobahk donor was correlated significantly with being university scientific staff vs. students, no previous awareness about biobank, need for relative’s or friend’s opinion before decision making, presence of payment for donation and type of requested biological material.
XVI Traffic Psychology International Meeting (Kaunas on November 29—30, 2018)
Authors: Kochetova T.V.
Published: March 2019

This publication is a brief overview of the XVI Traffic Psychology International Meeting in Kaunas on November 29—30, 2018. The text of the overview presents the main ideas of the reports and presentations of psychologists and specialists of Road Safety from Lithuania and representations of traffic psychologists from other countries. The topics of the presentations covered various fields of Traffic Psychology: from evaluating approaches and practices on work with driver-offenders to the competence of a specialist of Traffic Psychology.
Correlations between dynamic fragility, activation energy and glass transition temperature in polymeric composite materials: An overview from literature
Authors: Ornaghi Junior 1 Heitor Luiz , Poletto 2 Matheus , Ornaghi 3 Felipe Gustavo
Published: March 2019

Here, it is compiled data from literature for glass transition temperature (Tg) and activation energy (Ea) for different types of polymeric composite materials. A correlation among both parameters and dynamic mechanical curves is analyzed in terms of reinforcement effect and its correlation with the glassy and elastomeric moduli, as well the wideness of the main transition region. Besides, all results are discussed in terms of dynamic fragility. The results indicate that the glass transition temperature has not a direct relation with reinforcement effect promoted both in the glassy and/or elastomeric moduli. Moreover, the dynamic fragility concept seems do not be applied in polymeric composite materials since in the glass transition region the format of the storage, loss and tan delta curves vary strongly, depending on the specific polymeric composite material family.
Short beam strength and flexural behavior of GFRP laminates embedded with short carbon fibers having notch
Authors: Rawat 1 Prashant , Singh 2 K. K. , Tripathi 1 B. N.
Published: March 2019

This paper examines the mechanical performance of eight-layered GFRP laminate embedded with short carbon fibers (SCF). Eight layered GFRP samples are prepared using press molding machine at 40 KN pressure. Notched samples (1 mm deep) at specific position from the center are tested, the doping of SCF is done to evaluate the improvement in mechanical properties using reinforcement at three different proportions 0, 1, 2 and 5 wt.%. The GFRP samples are prepared as per ASTM D2344 and ASTM D7264 for short beam strength (SBS) and flexural and respectively. Samples are tested using Hounsfield HK-50 universal testing machine (UTM) with 50KN capacity at room atmospheric conditions. Results of the experimental analysis justified that the improvement in mechanical properties with increase in doping percentage of SCF while at highest doping value i.e. 5 wt.% mechanical properties reduced.
Design of broadband metamaterial-based ferromagnetic absorber
Authors: Shi 1 Yan , Yang 1 Jie , Shen 1 Hua , Meng 1 Zhankui , Hao 1 Tong
Published: March 2019

In this paper, a metamaterial-based ferromagnetic absorber has been designed at microwave frequencies. The proposed absorber is composed of a periodic array of stacked circular ferromagnetic patches fabricated on the FR4 substrate. With the ferromagnetic property, the single-layer patch array generates a good resonant absorption mode. By stacking multiple ferromagnetic patches, the designed absorber with the absorption above 90% has a wide absorption bandwidth from 10 to 21 GHz. Due to the symmetric structure, the proposed absorber is polarization insensitive. At oblique incident with the incident angle of 45o, the good absorption more than 80% can be achieved in the whole operation band.