bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphological features of nectaries of some species of the genus Rosa (Rosaceae)
Authors:   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Rubtsova O.L. , Vakulenko T.B. ,   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Chyzhankova V.I. ,   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine
Published: April 2022

Results are presented of our study of nectaries of 13 species of the genus Rosa from the collection of the M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine. Using light microscopy, we described and illustrated their morphological features in details. Nectaries of all studied species were floral, hypanthial, symmetrical, non-septally structural, mesenchymatous, and persistent. Based on location of the androecium, nectaries were intrastaminal, and only Rosa henryi was found to have amphistaminal nectary. Each species was morphologically differentiated from others by one or more characters. We analyzed morphological features (diameter of nectary and throat of hypanthia, thickness of nectary tissue around throat of hypanthia and on the edge, form of nectary on the longitudinal section), on that basis we allocated groups of nectaries based on their shape – convex (cone- and dome-shaped), curved, and flat ones. The latter is typical for Rosa roxburghii, which, according to a number of other morphological features, is separated by taxonomists in a monotypic (monospecific) subgenus. Based on surface characteristics of the nectary, Rosa xanthina with papillary growns and Rosa henryi with a uniformly humped relief stood out the most examined species. We emphasized reduction of thickness of nectary tissue in radial direction, except for Rosa spinosissima, in which thickness was almost even throughout the whole area of the nectary. The listed morphological differences can be used as additional diagnostic characters at the species level. Such features as the outline of the nectary throat and edges are quite variable within species and were not taxonomically significant. We present original figures and photographs of nectaries in an outline and on a longitudinal section.
Phyllanthus tenellus Roxb. (Phyllanthaceae), a newly naturalising species in Morocco
Authors: Khamar Hamid , Benkhnigue Ouafae , Douira Allal , Zidane Lahcen , Ouazzani Touhami Amina
Published: April 2022

We report the herbaceous plant Phyllanthus tenellus Roxb., a species native to tropical regions, from Morocco. This is the first time that the genus and species are reported from Morocco and continental North Africa. We found this species to be naturalising in several localities in north-western Morocco. A morphological description, the geographic distribution, and notes on the ecology of this species are provided. We present for the first time photographs of P. tenellus from continental North Africa.
The analysis of pedagogical technologies efficiency in the professional training of medical specialists
Authors: Radziievska Iryna
Published: April 2022

The formation of professional readiness of graduates through the development and improvement of the professional education system is an important criterion for a medical specialist. It is achieved by introducing modern pedagogical technologies into the educational process. The key to the formation of professional readiness of graduates is the use of interactive teaching methods, technologies of a person-oriented approach, formation of students’ communication skills, contextual, imitation and problem-search methods, close cooperation of higher medical education institutions with clinical practice bases, information support, postgraduate training of teachers and graduates of educational institutions, adaptation to new market conditions.

Based on the conducted research, the following can be concluded: the effectiveness of the application of modern pedagogical technologies in the professional education of medical specialists has prospects for its development, forms a competitive and popular specialist in the labor market; medical education is one of the professional education types and contains a system of knowledge, skills, worldview and behavioral qualities of an individual; the main components for improving the formation of professional training of graduates are clinical training, innovative training methods, support for graduates in the workplace, self-education, motivation, readiness for continuous training and professional development; in the structure of professional training, the most important is psychological readiness of graduates of educational institutions, determined by the mood of the specialist’s psyche and spiritual forces to solve professional problems and perform professional duties. The scientific originality of the obtained research results is determined by the fact that the paper presents an analysis of the effectiveness of modern pedagogical technologies in the training of students of graduation groups of specialty 223 Nursing, in order to estimate the degree of importance of mastering their professional skills for their successful professional activity and assessment by graduates of their knowledge, skills and abilities necessary in the future for high-quality performance of professional tasks
Carpathian school: look to the future of non-formal education in Ukraine
Authors: Mykhaylenko Valeriy , Blyzniuk Mykola
Published: April 2022

Non-formal education is a social phenomenon that actively complements the traditional educational and scientific activities of classical educational universities. The "Third mission" of universities - education outside the classroom - is an actively developing movement in advanced countries, providing individuals with opportunities for self-development, self-realization, gaining new knowledge and practical experience. Understanding the "third" mission is an important component of success, as the social activities significantly increase the competitiveness of educational institutions in the educational services market. At this difficult time, when Ukrainian educational institutions are recovering from the Cowid-19 pandemic and Russian troops are deliberately destroying key civilian infrastructure, educators are gaining a unique opportunity to test new ways of transmitting knowledge, skills and attitudes. Non-formal education has an opportunity to implement multidisciplinary knowledge and skills directly in communities, shaping this way the values of a democratic society. This publication aims at assessing the achievements of the Carpathian School educational project and discussing ways to further develop multidisciplinary programs in response to the social demands of local communities.
The issues of non-formal education are extremely important for Ukraine, especially in martial law, when uncertainty in the formation of the social consciousness of citizens is exacerbated by global political, economic and environmental challenges.
The case study of the International Carpathian School gives the practice of organizing non-formal education. The Taras Shevchenko National University of Kyiv together with partner universities, NGOs and National Nature Parks, organized the School on the border of Ivano-Frankivsk and Chernivtsi regions, in the centre of the Hutsul land. The existing network of universities, strengthened by public organizations, government and business institutions, has good prospects for establishing educational programs to support sustainable development (SD) in the Carpathian region. Authors state that non-formal education has effective tools for the formation of worldview principles of the XXI century, professional orientation and socially responsible social behaviour of the young generation
Unknown facts of Artek’s famous history
Authors: Koptseva Anna V.
Published: April 2022

This sketch describes the historical period of the Artek establishment as a children’s camp in the first half of 1920s. The facts of not well-known story are presented, it was not so widely covered in publications, but the actions and decisions of subjected people made significant contribution to their job, to the success in which they believed, and to the development of self-awareness of those who lived in this period. People’s Commissariat of Public Health Nikolay Alexandrovich Semashko and first chief physician of Artek Feodor Feodorovich Shishmarev had significant impact on development of children healthcare and the strengthening of medical personnel during the most difficult years of “Red Terror” in Crimea.
Análise das denúncias de violência obstétrica registradas no Ministério Público Federal do Amazonas, Brasil
Authors: Martins Reny Bastos , Vasconcelos Milaine Nunes Gomes , Correa Rachel Geber , Pontes Munique Therense Costa de Morais
Published: April 2022

Resumo Introdução Trata-se de estudo sobre as denúncias formalizadas de violência obstétrica, registradas no primeiro Inquérito Civil Público da Região Norte sobre o tema. Objetivo Analisar as denúncias de violência obstétrica registradas no Ministério Público Federal do Amazonas, a fim de mapear as instituições de saúde do Amazonas envolvidas em violência obstétrica; as técnicas que são consideradas, pelas mulheres, como violentas; e realizar levantamento das categorias profissionais que foram denunciadas como autoras de violência obstétrica. Método Trata-se de um estudo quantitativo, exploratório e documental, realizado de janeiro a abril de 2018 no Ministério Público Federal do Amazonas. Os dados foram analisados por estatística descritiva, sendo apresentadas em frequências absolutas e relativas. Resultados Foram analisadas 43 denúncias sobre violência obstétrica protocoladas entre 2008 e 2018, detectaram-se 12 maneiras diferentes de realizar a denúncia; 13 instituições de saúde, 29 técnicas consideradas violentas; além de identificar 8 especialidades profissionais denunciadas. Conclusão tem-se que a violência obstétrica identificada ocorreu tanto em instituições públicas como em privadas; por diferentes profissionais de saúde, com destaque para médicos e enfermeiros; com diversas técnicas, ações e/ou atitudes, com destaque para aquelas que se situam no campo da relação profissional-usuário. Desse modo, identificou-se que as denúncias realizadas não se remetem apenas à categoria de violência institucional, abrangendo práticas de violência no âmbito da relação profissional-usuário.
Internações por condições sensíveis à atenção primária entre idosos residentes em Minas Gerais, Brasil, 2010-2015
Authors: Silva Sara de Souza , Pinheiro Letícia Cavalari , Loyola Filho Antônio Ignácio de
Published: April 2022

Resumo Introdução As internações por condições sensíveis à atenção primária (ICSAP) têm sido utilizadas como um indicador do acesso à atenção primária e de monitoramento do seu desempenho. Objetivo Analisar a tendência de comportamento das ICSAP entre idosos de Minas Gerais, Brasil, de 2010 a 2015. Método Estudo ecológico utilizando dados do Sistema de Informações Hospitalares (SIH-SUS), referentes a hospitalizações de idosos entre 60 e 79 anos. Foram calculadas as taxas de ICSAP global por causa e regiões administrativas de saúde. Resultados Foram analisadas 126.757 ICSAP ocorridas no período (8,8% do total de internações pelo SUS). A taxa global diminuiu de 10,4 para 9,4 (por 1.000). Entre as causas de internação analisadas, foi observada redução nas taxas de internação por hipertensão, deficiências nutricionais e gastroenterites infecciosas, mas foi constatado aumento da taxa de internação por infecção do rim e trato urinário. As taxas variaram ainda em função das regiões de saúde, sendo que regiões com baixa densidade populacional, PIB per capita mais baixo e pior infraestrutura sanitária apresentaram taxas mais elevadas. Conclusão A variação do indicador entre as regionais de saúde pode refletir disparidades socioeconômicas, de organização e oferta de serviços de saúde. A elevação das taxas de internação por algumas condições sensíveis à atenção primária pode indicar a necessidade de os serviços de Atenção Primária à Saúde (APS) aumentarem os esforços para o cuidado da pessoa idosa que sofre a comorbidade com mais frequência.
Distribuição e dependência espacial da mortalidade por tuberculose em um município da região amazônica
Authors: Arcêncio Ricardo Alexandre , Belchior Aylana de Souza , Arroyo Luiz Henrique , Bruce Alexandre Tadashi Inomata , Santos Felipe Lima dos , Yamamura Mellina , Queiroz Ana Angélica Rêgo de , Santos Danielle Talita dos , Uchôa Severina Alice da Costa , Nunes Carla
Published: April 2022

Resumo Introdução A mortalidade por tuberculose é um indicador sensível às desigualdades em saúde, considerando-se que o risco para sua ocorrência está relacionado à vulnerabilidade dos territórios. Objetivo Investigar se as variações espaciais dos determinantes sociais afetam as mortes por tuberculose em um município da região amazônica. Método Estudo ecológico com medidas múltiplas de análise, composto por óbitos por tuberculose como causa básica em Manaus, Amazonas, Brasil, notificados no Sistema de Informação sobre Mortalidade (2006-2015). Nas análises, foram calculadas as taxas bruta e padronizada, e usado o Índice de Moran para verificar a autocorrelação espacial da mortalidade e, posteriormente, foi aplicada a regressão geograficamente ponderada para aferir a relação da desigualdade com as mortes por tuberculose. Resultados Foram identificados 731 óbitos pela doença. A distribuição da mortalidade ocorreu de forma heterogênea, sendo que as altas taxas de óbito por tuberculose estavam em áreas mais socialmente vulneráveis. Foram confirmadas a autocorrelação e a dependência espacial. O modelo final apresentou as variáveis indicadoras de iniquidades (baixa renda, pobreza e escolaridade), mostrando relação destas com a mortalidade. Conclusão Ficou evidente que os determinantes sociais no espaço urbano influenciam a mortalidade por tuberculose na região. Portanto, avançar em políticas públicas para corrigir as iniquidades em saúde pode influenciar positivamente esse cenário.
Trends in mortality due to traffic accidents in Brazil during the period from 1997 to 2015 for the male population
Authors: Dalpiaz Ameg , Schneider Ione Jayce Ceola , Pereira Amanda , Cardoso Ramon Bauer , Marcolino Alexandre Márcio , Barbosa Rafael Inácio
Published: April 2022

Abstract Background Traffic accidents are one of the main causes of death in Brazil and the increase in the mortality rate is concerning. Objective The study aims to perform a temporal analysis of mortality trends related to traffic accidents in Brazil and its states. Method This is an ecological study of time series of mortality from traffic accidents in Brazil and its Federative Units. Data was obtained from the Information System for Mortality (SIM), processed by Datasus and classified under the headings V01 to V89 (CID-10). Specific mortality rates were calculated and adjusted by age. The temporal tendency analysis was run on the Joinpoint Regression Program. Results The Brazilian male population showed no change in the average annual percentage for the mortality rate (-0.8%; CI 95% -1.7;0.1). Ten states showed increased mortality rates; nine presented a decline, and eight remained constant throughout the period. Conclusion The male population showed no change in the rates, but the mortality rate for the general Brazilian population decreased by 1% per year from 1997 to 2015. Both general and male populations had a decrease of 4.6% and 4.9% per year during the last years, respectively (2012-2015).
Multilingual Machine Translation: Deep Analysis of Language-Specific Encoder-Decoders
Authors: Escolano Carlos , Ruiz Costa-jussà Marta , R. Fonollosa José A.
Published: April 2022

State-of-the-art multilingual machine translation relies on a shared encoder-decoder. In this paper, we propose an alternative approach based on language-specific encoder-decoders, which can be easily extended to new languages by learning their corresponding modules. To establish a common interlingua representation, we simultaneously train N initial languages. Our experiments show that the proposed approach improves over the shared encoder-decoder for the initial languages and when adding new languages, without the need to retrain the remaining modules. All in all, our work closes the gap between shared and language-specific encoder-decoders, advancing toward modular multilingual machine translation systems that can be flexibly extended in lifelong learning settings.
Deep learning prediction of gamma-ray-attenuation behavior of KNN–LMN ceramics
Authors: Malidarre Roya Boodaghi , Arslankaya Seher , Nar Melek , Kirelli Yasin , Erdamar Isık Yesim Dicle , Karpuz Nurdan , Dogan Serap Ozhan , Malidarreh Parisa Boodaghi
Published: April 2022

The significance and novelty of the present work is the preparation of non-lead ceramics with the general formula of (1 − x)K0.5Na0.5NbO3–xLaMn0.5Ni0.5O3(KNN–LMN) with different values of x (0 < x < 20) (mol%) to examine the shielding qualities of the KNN–LMN ceramics. This is done by carrying out Phy-X/PSD calculation and predicting the attenuation behavior of the samples by utilizing the deep learning (DL) algorithm. From the attained results, it is seen that the higher the x (concentration of LMN in the KNN–LMN lead-free ceramics), the better the shielding proficiency observed in terms of gamma-shielding performance for the chosen KNN–LMN-based lead-free ceramics. In all sections, good agreement is observed between Phy-X/PSD results and DL predictions.
Hydration kinetics of sulfoaluminate cement with different water/cement ratios as grouting material used for coal mines
Authors: Yan Zhaoxia , Zhang Haibo , Zhu Yu
Published: April 2022

In order to provide theoretical guidance for sulfoaluminate cement as grouting material used for coal mines, the purpose of this paper is to trace the hydration process and study the hydration kinetics of sulfoaluminate cement. The influence of the water/cement ratio (W/C) on the hydration exothermic characteristics of sulfoaluminate cement was studied by TAM air hydration microcalorimeter, Raman spectrum and compressive strength test, respectively. The results show that the rapid hydration of sulfoaluminate cement can be divided into three hydration processes: acceleration period, deceleration period and stability period. With the increase of W/C, the maximum heat release rate of cement decreases, while the cumulative heat release increases. In addition, increasing W/C can affect the microstructure of the cement paste, increase the porosity and further decrease the strength. Meanwhile, the Krstulović–Dabić model was used to analyse the hydration kinetics of sulfoaluminate cement with different W/C. The results show that the hydration mechanism of sulfoaluminate cement is not affected by increasing W/C. The hydration kinetics process can include three stages: nucleation and growth mechanism, phase boundary reaction and diffusion reaction.
Missing aspects of the risk: speed and duration
Authors: Baloglu Gurol , Cakali Kaan Ramazan
Published: April 2022

Purpose- Risk assessment, risk prioritization and risk responding are vital steps in any risk management process. After risks are identified, traditional approach allows risk experts to define likelihood and impact factors for these risks. Thus, a risk severity can be defined, and risk prioritization can be considered under the budget constraints, i.e., cost of implementing remedial measures. On the other hand, recent events, like digitalization and pandemic, showed that evaluating only these two factors of the risk can be missing. Two important aspects of the risk are suggested to be considered: speed (velocity) and duration. In this study, these two elements are analyzed.
Methodology- In the study, following an introduction, COSO models and results of the literature review are analyzed. After a theoretical background and a literature review, a discussion on new aspects of the risk is started. Finally, an imaginary case is used to analyze risks including all aspects.
Findings- It is realized that in the academic literature, new aspects of the risk have not been addressed yet. This is the reason why these two aspects defined as missing. At the end, it is concluded that although speed and duration are elements, which directly affect the impact factors, at the same time, these are key determinants of the timing and structure of the risk responses. Additionally, continuous risk assessment can be beneficial for the entities to have more time to respond to the risks.
Conclusion- Depending on the findings, it is concluded that all aspects of the risk is needed to be analyzed during risk management processes. The originality of this study stems from the fact that it includes practical suggestions for integrating the concepts of speed and velocity, which are conceptually included into the frameworks. In addition, this study presents a perspective by associating the concepts of agility, resilience, and continuous risk assessment.

Keywords: Risk assessment, COSO, risk management, internal control, internal audit.
JEL Codes: G32, M42, M19
A RESEARCH ON THE ROLE OF LEADER MEMBER EXCHANGE IN THE RELATIONSHIP OF EMPLOYEE VOICE AND INNOVATIVE WORK BEHAVIOR
Authors: Sekerdil Resat , Gunes Evrim
Published: April 2022

Purpose- The purpose of this research is to examine the employee voice and the leader-member exchange and their effects on innovative work behavior to provide an in-depth understanding of innovative work behavior in organizations.
Methodology- 579 articles were reached by scanning the words "Innovative Work Behavior", "Employee Voice" and "Lead Member Exchange" in the articles published between 2010 and 2021 in the Web of Science database, and bibliometric analysis was performed on these articles. VOSviewer program was used for bibliometric analysis and interpreted after visualization.
Findings- Each variable has been addressed by the researchers in its own literature, but the relationship between these variables has not been adequately addressed.
Conclusion- Without the voice of the employee, it is not possible to talk about innovative business behavior, nor can we talk about leader member change. Today, businesses connect with their environment with an open system. For this reason, environments where innovative business behavior can develop depend on the participation of employee voice and necessary leadership practices. This research draws attention to the role of leader member interaction in the relationship between employee voice and innovative work behavior, identifies and reports that variables need to be tested.

Keywords: Innovative work behavior, employee voice, leader member exchange, ınnovation, bibliometric analysis
JEL Codes: O30, M10, M54
WHAT CHANGED IN THE PROBLEMS AND SOLUTIONS OF ENTERPRISES IN THE PRE-COVID-19 / COVID-19 PERIOD EVALUATION OF THE SURVEY RESULTS OF SWORN-IN CERTIFIED PUBLIC ACCOUNTANTS OF ISTANBUL
Authors: Ekren Nazım , Alp Elcin Aykac , Erdogan Mefule Findikci
Published: April 2022

Purpose- The purpose of this study is to identify what has changed on the enterprises’ problems and solution proposals pre and during the COVID-19 period. In this context, the problem and solution proposals obtained from the "Chamber of Sworn-In Certified Public Accountant of Istanbul Economy Expectation Index and Encountered Problems and Solution" survey were evaluated on basis of sectors.
Methodology- The survey used in the study has been applied quarterly since 2017 to 13 different sectors and more than 300 enterprises. In April 2020, the survey was applied as a COVID-19 thematic survey. In this study, the results of the pandemic thematic survey and the results applied in the 2019-2021 periods were compared using frequency breakdowns for 8 sectors.
Findings- According to the findings, it was stated that serious losses occurred due to the exchange rate risks due to the problems experienced with the fluctuation of the exchange rate. In addition, the global economic recession has become one of the important problems of enterprises that have problems in terms of equity capital. While the profitability ratios decreased due to the contraction in demand and increase in costs, it was observed that enterprises with increasing credit costs had difficulties in accessing appropriate financing.
Conclusion- According to the study, it has been demonstrated that sectors appear new problems in the pandemic. Hence, sectors' problems should be considered on a preferential basis by public authorities. It has been considered incentive that is applied by the public authority will have a great influence on enterprises.

Keywords: Covid-19, sectoral problems, encountered problems and solution proposals.
JEL Codes: P00, M21, M29
Synthesis and study of the properties of synthetic analogues of the mineral naffildite with the participation of rare earth elements
Authors: Агаева Рейхан , Мамедов Шарафат Гаджиага оглы , Аждарова Дильбар Самед , Рагимова Валида Мурад , Алиев Озбек Мисирхан
Published: April 2022

In recent years, there has been a significant increase in interest in ternary and quaternary compounds with the participation of rare earth elements (REE), as well as copper, antimony, and bismuth, which have a wider range of physical properties. Due to their valuable physical properties, they have become promising targets of research for modern materials science. Therefore, the purpose of this work is to study the properties of synthetic analogues of naffildite with the participation of rare earth elements.        The samples were synthesised from ternary sulphides (in the case of obtaining Cu2LaSb3S7,  Cu2CeSb3S7, Cu2PrSb3S7 and Cu2NdSb3S7) by fusion in sealed quartz ampoules, preliminarily evacuated to a residual pressure of 10-3 mmHg at 950–1100 K for 8 hours. The remaining antimony and bismuth-containing analogues, due to the peritectic nature of formation, were synthesised through batches (2Cu + Ln + 3Sb(Bi) + 7S) from especially pure elements. After completion of the reaction, homogenizing annealing was carried out for a month at 600–700 K, depending on the composition. The obtained samples were investigated by differential thermal (DTA), X-ray phase (XRD) and microstructural (MSA) analyzes, as well as bymeasuring the microhardness and determining the density.       Compounds of the Cu2LnSb3S7 or Cu2LnBi3S7 (Ln – REE) type have been synthesised by direct synthesis from elements or from the ligature CuSbS2(CuBiS2) and LnSbS3(LnBiS3). It was found that they are  sostructural and crystallize in the orthorhombic system (Cu2LnSb3S7 – a = 14.490÷14.264, b = 21.422÷21.206, c = 3.902–3.804 Å; Cu2LnBi3S7 – a = 14.722÷14.506, b = 21.864÷21.564, c = 4.142÷3.464 Å; Z = 4, simple group Pbnm or Pbn21) and belong to the structure type of naffildite Pb2Cu (Pb, Bi) Bi2S7. Cu2LaSb3S7, Cu2PrSb3S7 and Cu2NdSb3S7 melt congruently at 975, 985, and 1015 K, respectively, and other compounds are formed by a peritectic reaction.
Corrosion inhibition of steel by selected homologues of the class 3-alkyl-5-amino-1H-1,2,4-triazoles in acidic media
Authors: Ляпун Денис Викторович , Кружилин Алексей Александрович , Шевцов Дмитрий Сергеевич , Асеева Юлия Васильевна , Шихалиев Хидмет Сафарович
Published: April 2022

The use of hydrochloric acid in the treatment of the bottomhole formation zone leads to the significant corrosion of metals, as well as hydrogen and chloride stress cracking of pump compressor pipes. In order to solve this problem, corrosion inhibitors are added to a hydrochloric acid solution. This article presents the results of a study of the anticorrosive activity of a number of derivatives of the class of 3-alkyl-5-amino-1H-1,2,4-triazole under the conditions of hydrochloric acid corrosion of low-carbon steel.         During the study, selected 3-alkyl-5-amino-1H-1,2,4-triazoles were synthesized. Their structure was confirmed and proved using NMR spectroscopy and HPLC/MS spectrometry. Regularities of the anticorrosive ction of the investigated compounds have been established using polarization electrochemical studies and gravimetric direct corrosion tests. Corrosion rates, inhibition coefficients and degrees of protection have been calculated for all inhibitors. The probable mechanism of the inhibitory action of the studied compounds has been substantiated using quantum chemical calculations based on the density functional theory using the Gaussian program.           It was shown that the structure of the alkyl substituents has the greatest effect on the inhibitory activity of the studied compounds. The mechanism was proposed for the adsorption of the inhibitor, which explained  the increase in protective properties with an increase in the length of the alkyl substituent. The high hydrophobicity of the aliphatic fragment, not involved in the chemisorption process, additionally prevents the acid solution from contacting the metal surface, while the heterocyclic moiety ensures the sorption of the inhibitor on the metal surface.           As a result, it was shown that derivatives of the homologous series of 3-alkyl-5-aminotriazole are suitable as inhibitors of acid corrosion of ST-3 steel. The minimum length of a hydrocarbon radical at which significant inhibitory activity was observed is 7 carbon atoms. Protection degrees of 65–85% were achieved when 3-heptyl-5-amino-1H-1,2,4-triazole additives at a concentration of at least 2 g/L were added to the hydrochloric acid solution.
Effect of the morphology and composition of trimetallic PtCuAu/C catalysts on the activity and stability of the methanol oxidation reaction
Authors: Меньщиков Владислав Сергеевич , Беленов Сергей Валерьевич , Никулин Алексей Юрьевич
Published: April 2022

A study on the influence of the method for obtaining trimetallic PtCuAu/C catalysts on their activity in the oxidation of methanol has been carried out.     The structural characteristics of the obtained trimetallic catalysts have been studied by X-ray diffraction and transmission electron microscopy. The nanoparticles of the material obtained by the galvanic synthesis method had a size twice as large (~ 6 nm) than the nanoparticles of the material obtained by the co-deposition of metal precursors. According to the results from the accelerated stress testing of catalysts, it was found that the material obtained by the galvanic method of substitution of copper atoms with gold had a higher residual activity in the oxidation of methanol than the commercial Pt/C analogue.        This study shows the potential of obtaining and using multicomponent platinum-containing nanoparticles deposited on a carbon carrier as effective catalysts for use in methanol fuel cells.
The kinetics of cathodic hydrogen evolution on titanium disilicide in a sulphuric acid solution
Authors: Третьякова Валерия Витальевна , Пантелеева Виктория Вячеславовна , Шеин Анатолий Борисович
Published: April 2022

The kinetics and mechanism of hydrogen evolution reaction on the TiSi2 electrode in x M H2SO4 + (0.5 – x) M Na2SO4 (x = 0.5; 0.35; 0.20; 0.05) solutions were studied using the methods of polarisation and impedance measurements.         The cathodic polarisation curves of TiSi2 were characterised by a Tafel section with a slope of 0.116–0.120 V at E ranging from –0.30 to –0.48 V (SHE). The value of hydrogen evolution overpotential at i = 1 A/cm2 for TiSi2 was 0.90–0.96 V. The kinetic parameters of the hydrogen evolution reaction on silicide were close to the theoretical values for the slow stage of charge transfer.          Based on the measurements of the differential capacitance of the TiSi2 electrode (at f = 10 kHz), depending on the cathodic polarisation and acidity of the electrolyte, it was concluded that a thin dielectric film of silicon dioxide (Si + 2H2O →SiO2 + 4H+ + 4e–) was present on the surface of the silicide. The film was not reduced with low cathodic polarisations.          The impedance spectra of the TiSi2 electrode at the potentials of the Tafel region were capacitive semicircles with a misplaced centre. The impedance spectra were described by an equivalent electrical circuit, the Faraday impedance of which consisted of a series-connected charge transfer resistance R1 and a parallel R2C2 chain corresponding to the adsorption of atomic hydrogen on the electrode surface. The impedance of the double layer capacitance was modelled using the constant phase element CPE1. The χ2 criterion for the circuit was (1.3-3.7)·10-4 (when using data modulus weighting), the sum of square deviations was (1.5–4.1)·10–2, and the error in the determination of the values of circuit parameters did not exceed 10 %.The experimental values of the slopes of lg R1,E-, lg R2,E-, and lg C2,E-dependences were close to the theoretical values of the slopes for the discharge-electrochemical desorption mechanism, in which both stages were irreversible and the transfer coefficients of the stages were not equal, when the Langmuir isotherm for adsorbed atomic hydrogen was fulfilled. The reaction of absorption of hydrogen with the kinetic control proceeded at the same time as the hydrogen evolution reaction.
Effect of ethanol vapour sorption on the semiconductor-metal phase transition in powdered vanadium dioxide
Authors: Тутов Евгений Анатольевич , Алексеева Елена Валериевна , Самойлов Александр Михайлович , Березина Ольга Яковлевна , Борисков Петр Петрович
Published: April 2022

We studied the effect of ethanol vapour on the parameters of the semiconductor-metal transition in a polycrystalline vanadium dioxide powder of the stable monoclinic phase a-VO2. It was synthesised by reducing vanadium pentoxide with oxalic acid while heated in air. The DC electrical resistance of the samples was studied between room temperature and 100оС in a tubular heater, in a microcompressor-generated air stream with saturated ethyl alcohol vapour. It was found that in the presence of ethanol vapour, the hysteresis loop shifted to higher temperatures by ten degrees and its cooling branch (corresponding to the transition of vanadium dioxide from the metallic phase to the semiconductor phase) became stepped.
A model of interdiffusion occurring during the formation of thin metal films on single-crystal silicon under conditions of limited solubility of the components
Authors: Афонин Николай Николаевич , Логачева Вера Алексеевна
Published: April 2022

Thin metal films are used in semiconductor and microelectronic devices to form ohmic and non-ohmic contacts to singlecrystal silicon. A common feature of the used Ме–Si systems is the low mutual solubility of elements and the polycrystalline nature of metal films. Solid-phase interactions during the deposition of metals on single-crystal silicon and the subsequent vacuum annealing results in the redistribution of the elements near the Me/Si interface. An important task facing the material science of solid-state electronics is to develop a mechanism of solid-phase interaction of metal thin films and single-crystal silicon. The aim of our study – was to develop a quantitative model of interdiffusion in the Ме–Si system under conditions of limited solubility of the components.          The article suggests a mechanism of formation of Me–Si systems based on the diffusion and segregation of silicon near the intergrain boundaries of the metal and the limited formation of complexes during the diffusion-induced penetration of metal into silicon. The article suggests a model of reactive interdiffusion in thin metal film – single-crystal silicon systems under conditions of limited solubility of the components. Mathematical modelling was used to study the interaction of magnetron-sputtered metals Ti, W, and Nb with single-crystal silicon during isothermal vacuum annealing. The numerical analysis of experimental distributions of concentrations of Me and Si obtained by Rutherford backscattering spectroscopy allowed us to determine their individual diffusion coefficients in Me-Si systems.       The model can be used for empirical studies of the redistribution of the elements of two-layer systems with limited solubility, as well as to forecast the technological conditions for the production of electronic devices.
[RETRACTED] Optimal Max Keto Reviews - Shocking Scam Reviled Read Now v1
Authors: not provided optimalaxerviewsnow
Published: April 2022

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Optimal Max Keto Reviews - Shocking Scam Reviled Read Now
[RETRACTED] Gemini Keto Gummies- Price, Effects, Dosage and Ingredients? v1
Authors: not provided geminiketo-gummies
Published: April 2022

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Gemini Keto Gummies
Genomic RNA extraction by TRIzol method by using Drosophila melanogastergut v1
Authors: Sabeelil Islam Mohamed
Published: April 2022

Simple method followed for RNA extraction of Drosophila melanogaster larval(3rd instar) gut for CDNA
[RETRACTED] Purekana CBD Gummies REVIEWS, REAL PRICE, SHARK TANK & INGREDIENTS. Where to buy ? v1
Authors: not provided rhyan.dhruv
Published: April 2022

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PureKana CBD Gummies Review The fundamental explanation related with why individuals are reluctant about CBD is the sensation of compulsion that is known to be indispensable to this component. Most likely that CBD enjoys a health advantage expected to fix torments, however the fixation issues get specialists far from utilizing it in the enhancements. In this way, how one can utilize CBD actually without being viable remaining parts the fundamental inquiry. Indeed, it is conceivable, as CBD has various medical advantages now it is allowed to use across the US.
The Role of Autonomy in the Transition to the World of Work
Authors: Gellermann Jan F. C. , Fuchs Philipp
Published: April 2022

The article is based on a qualitative study covering 32 youths from the age of 18 to 25 who did not manage a stable transition from school to the German labor market. All of them, albeit to different degrees and for different reasons, are running the risk of long‐term exclusion from the sphere of work and vocational training measures as well as public support structures. Based on multiple narrative interviews with the young persons participating in the study, qualitative case reconstructions were conducted concerning their social background, socialization, and how their biographies developed. This contribution specifically sheds light on the relevance of the genesis of autonomy for the individual transition into the world of work and further education. The findings are presented as risk factors hampering the genesis of autonomy in the process of socialization, namely, (a) dysfunctional parent–child relationship and (b) persistence of traditionalism. The findings point not only to the high relevance of autonomy for managing a stable transition but also imply that there are further factors leading to more disconnectedness in addition to a broad range of factors known from the existing literature. From our perspective, longer processes of socialization, i.e., subject formation processes, significantly contribute to a more nuanced understanding of this phenomenon.
Turismo regional: percepção de moradores, turistas e turistas potenciais da região Caminhos da Fronteira (SC)
Authors: Jantsch Franciele Milena , Werlang Nathalia Berger
Published: April 2022

O presente estudo buscou analisar as percepções de moradores, turistas e turistas potenciais sobre as opções turísticas na região de Caminhos da Fronteira. O procedimento metodológico utilizado foi de natureza teórica-empírica e seguiu o método quantitativo e descritivo, que foi operacionalizado por meio de um survey, resultando em uma amostra de 250 entrevistados. Quanto aos resultados da pesquisa, evidenciou-se uma preferência pelo turismo de aventura, ecoturismo e turismo rural; foram destacados como pontos fortes da região a hospitalidade, o ambiente limpo e a segurança do local; como ponto a ser melhorado a participação do setor público, a infraestrutura e a disponibilidade de transporte entre a região; transporte por carro ou ônibus; se hospedar em pousadas e hotéis entre 2 e 7 dias de permanência. Assim, espera-se que a pesquisa contribua com a construção de imagem de destino turístico da região Caminhos da Fronteira, sendo útil para a sociedade e pesquisadores.
A compra de serviços de hospedagem por meio do comércio eletrônico: um estudo dos fatores condicionantes com os residentes de Fortaleza/CE
Authors: De Araújo Sávio Machado , Perinotto André Riani Costa
Published: April 2022

Evolução e disseminação da Internet têm modificado comportamento de compras, especialmente, pela facilidade de acesso às informações. No Turismo, a Internet surge como parceira ideal devido à intangibilididade de produtos e serviços. Assim, o turista atual torna-se consumidor de novo mercado, conhecido como mercado virtual ou comércio eletrônico. Ademais, existem poucos estudos que consideram o comportamento de compra de serviços de hospedagem pelos residentes de Fortaleza/CE usando e-commerce, dado que, na maior parte das pesquisas científicas, Fortaleza é apresentada como destino turístico. Sendo assim, esta pesquisa analisa os fatores que influenciam o uso do comércio eletrônico na compra de serviços de hospedagem pelos residentes de Fortaleza/CE. Na consecução desse objetivo, utilizaram-se os construtos “Influência Social” e “Relevância do Preço” (UTAUT2), além dos fatores “Confiança” e “Risco Percebido” (SLADE et al., 2015). Para traçar o perfil do consumidor foram consideradas os fatores demográficos idade, nível de renda e escolaridade. Foi realizada uma pesquisa descritiva e quantitativa e a coleta de dados foi realizada pela aplicação de questionário eletrônico (Survey on-line) em uma amostra de 195 residentes de Fortaleza/CE. Na análise dos dados utilizou-se estatísticas descritivas, análise fatorial exploratória, teste exato de Fisher e,  por fim, a análise de regressão linear múltipla. Resultados apontam que a influência social e o preço são os construtos que mais impactam no uso do comércio eletrônico na reserva on-line. A pesquisa demonstrou: 1) confiança não possui relação significativa com compra de serviços de hospedagem por meio eletrônico; 2) qual o perfil dos consumidores residentes em Fortaleza que fazem reservas on-line; 3) quais fatores influenciam ou não nesse uso, contribuindo para que plataformas digitais conheçam o mercado consumidor dos moradores de Fortaleza/CE relacionado à compra de hospedagem.
Reccurence of Heterotopic Ossification as the Result of Total Hip Endoprosthesis Dislocation: A Case Report
Authors: Efimov Gleb A. , Cherkasov Magomed A. , Goncharov Maksim Yu. , Efimov Nicolay N.
Published: April 2022

Background. Heterotopic ossification (HO) is the formation of mature bone in soft tissues. HO in the hip area can be a consequence of both injury to the nervous system and local trauma. After total hip arthroplasty HO develops in 30% of cases.
The aim of the study is to demonstrate a rare clinical case of a recurrence of HO in patient after a primary total hip arthroplasty, accompanied by ankylosing.
Case presentation. A 32-year-old patient was admitted to the clinic for revision hip arthroplasty with a diagnosis long-standing dislocation of the right hip joint endoprosthesis head, heterotopic ossification 3 years after dislocation. During the surgery, there were difficulties with the sciatic nerve dissection, as well as the structures of the endoprosthesis. We removed all the ossifications that obstructed the dislocation of the endoprosthesis. The patient had sciatic nerve neuropathy on the right lower limb with lesions of the fibular and tibial nerves on the background of edema. The patient was discharged on the 21st day. The presented clinical case is interesting because the patients relapse could be caused by a combination of various risk factors. Taking into account the fact that the injury was received as a result of an accident and the patient had a fracture of the bones of the contralateral shin, it could be the effect of a local hip injury that aggravated the process.
Conclusions. This clinical observation highlights the importance of preventing possible complications after surgery and maintaining feedback with patients, especially those belonging to the high-risk group. It is likely that with adequate prevention of the HO formation and timely reduction of dislocation, the problems described in the article after primary total hip arthroplasty could have been avoided.
Strategies of Osteosynthesis: Problems and Perspectives
Authors: Belen'kiy Igor’ G. , Manukovskii Vadim A. , Tulupov Aleksandr N. , Demko Andrei E. , Kandyba Dmitrii V. , Sergeev Gennadii D. , Maiorov Boris A. , Barsukova Irina M. , Adzhimuradov Bagautdin O.
Published: April 2022

Background. Urgent osteosynthesis requires number of organizational, material, technical and staff resources.
Aim of the study to determine advantages and disadvantages of existing strategies for osteosynthesis basing on literature data and comparative analysis of organization of osteosynthesis on the first day after injury and at a later time.
Methods. Data were collected through review of medical records from first half of 2021 calendar year and consist of the patients have been treated by different types of osteosynthesis on the first day after admission to the hospital and later. Average length of hospital stay (LOS) for surgical procedures and duration of the operative time were compared.
Results. In total 266 osteosynthesis of the extremities immediately after admission to the hospital were performed in the first half of 2021 in 260 patients. The most frequently performed ankle fractures fixation (20.7%) and clavicle fractures surgical repairment (13.9%). Cases of early infections complications and no revision surgeries required due to unstable fixation after urgent osteosynthesis were excluded. In the same period 659 delayed osteosynthesis were performed. Mean value of inpatient day in patients, who underwent urgent surgery, was 8.4016.67 days, while patients, who underwent delayed surgery, spent significantly greater (p0.05) amount of time in the hospital 12.986.28 days in average.
Discussion. Three strategies of osteosynthesis exist: urgent surgeries, delayed surgeries in daytime in operating rooms for planned surgeries and combination of these approaches. Urgent osteosynthesis surgeries do not lead to infectious complications or unstable fixation, what makes them viable option while choosing treatment tactics in case of some injuries. Precise determination of patient groups according to fracture pattern and its localization, that can be operated on in urgent manner, is necessary. Moreover, introduction of urgent osteosynthesis requires serious organizational measures. It is also necessary to perform economical assessment of described approach. Only after solving these questions, it will be possible to make final conclusions about optimal strategy for performing osteosynthesis.