bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of the shear bond strength of various adhesive systems to calcium silicate based pulp capping materials
Authors: CEVVAL OZKOCAK Begum Busra , AĞACCIOĞLU Merve , AYTAÇ BAL Fatma
Published: July 2023

Aim: This study aimed to evaluate the shear bond strength (SBS) values of different adhesive systems to calcium silicate and calcium hydroxide-based pulp capping materials.

Methods: Cylinder-shaped cavities (2x5 mm) were prepared in the middle of 120 acrylic blocks. Three pulp capping materials (Biodentine, TheraCal LC, Kerr Life) were placed into the cavities. Single Bond 2 (SB2), Clearfil SE Bond (CSB), Clearfil Universal Bond (CUB), Tokuyama Self-cured Universal Bond (TUB) were applied for each pulp capping material (n=10). After composite resin cylinders were prepared, SBS tests were carried out. Data and failure modes were analyzed using two-way ANOVA, Tamhane’s T2 (p≤0.05), and stereomicroscope, respectively.

Results: TheraCal LC showed the highest SBS values, and there was a statistically significant difference amongst pulp capping materials for all adhesives (p≤0.05). The lowest results were found in the Life+TUB (0.79±0.14), and the highest was TheraCal LC+CSB (8.55±1.73). In Biodentine, all adhesive systems showed lower results than TheraCal LC groups, whereas there was a statistically significant difference between SB2 and TUB compared to the Life.

Conclusion: TheraCal LC, which has the highest bond strength value in different generation adhesive systems, can be preferred as a pulp capping agent for composite restorations.
Genç yetişkinlerde COVID-19 aşı programına uyumu etkileyen faktörler
Authors: METE Burak , ÇINKIR Fatma
Published: July 2023

Amaç: Bu çalışmada genç yetişkinlerde tam doz COVID-19 (Corona Virus Disease-19) aşılanma durumu ve bunu etkileyen faktörlerin belirlenmesi amaçlanmıştır.

Yöntemler: Kesitsel tipteki bu çalışma Çukurova Üniversitesinde eğitim gören 654 öğrenci üstünde yapılmıştır. Öğrencilere elektronik ortamlardan ulaşılmıştır. Anket formunda aşı yaptırma, rapel doz yaptırma ve bunları etkilediği düşünülen faktörler sorgulanmıştır.

Bulgular: 654 genç yetişkinin yaş ortalaması 20,98±3,15’tir min (minimum)-max (maximum). Katılımcılar arasında hiç aşı olmayanların oranı %3,8’dir. Hiç aşı yaptırmamada en önemli nedenler aşı içeriğine güvenilmemesi ve yan etkiden korkmadır. Katılımcıların %39,6’sı tavsiye edilen rapel dozları yaptırmamıştır. COVID-19 aşısı olan kişilerin olmayan kişilere göre hastalığı daha tehlikeli ve bulaştırıcı değerlendirdikleri, rapel doz olan kişilerde ise olmayanlara göre COVID-19 aşısına yönelik olumlu tutumun daha yüksek, olumsuz tutumun ise daha düşük olduğu bulunmuştur. Rapel doz yaptırmama riskini COVID-19 aşısı tutum ölçeği olumlu tutum alt boyutundaki her 0,785 birimlik artış 2,19 kat OR (Odds Ratio)=0,456), sağlık personelinden bilgi alma 1,59 kat (OR=0,627) azaltmaktadır. Rapel dozu yaptırmama riskini aşı yaptıran tanıdıklardan bilgi alma OR=1,63 kat, ilk aşılamada yan etki yaşamış olma 1,44 kat artırmaktadır.

Sonuç: Üniversite öğrencilerinde COVID-19 aşı yaptırma oranlarının yüksek olduğu ancak tavsiye edilen rapel doz uygulamasının yeterli düzeyde olmadığı ve uygun zamanlarda yapılmadığı bulunmuştur.
A Migração venezuelana em Boa Vista/RR
Authors: Ângelo Germano Lopes , de Carvalho Cavalcante Olendina
Published: July 2023

O presente artigo tem como objetivo entender algumas relações sociais, políticas e econômicas que deram início a migração venezuelana para Roraima, em específico para cidade de Boa Vista, capital do estado. O foco do artigo serão os conflitos que ocorreram a partir das representações sociais criadas acerca dos migrantes, como os responsáveis pelas mazelas que assolaram o Estado no contexto das primeiras levas migratórias. Para tanto, nos valeremos da pesquisa bibliográfica e da nossa experiência de campo no âmbito da pesquisa realizada durante o mestrado em Boa Vista[1]. Inicialmente tentaremos identificar elementos históricos no país de origem, que talvez tenha impulsionado o movimento migratório sem precedentes da sua população, para em seguida, situarmos as condições da migração em Boa Vista.
Um epílogo: “corrupção” no vice-reinado da Nova Espanha
Authors: Pietschmann Horst
Published: July 2023

O estudo da corrupção na atualidade permite identificar fenômenos que podem ser aplicados ao passado histórico? Até onde a difusão da corrupção permite tirar conclusões sobre a solidez de uma ordem estatal, seja no passado ou na atualidade? E, por fim, até onde a corrupção é um fenômeno que, apesar da antiguidade do termo, apresenta-se de formas muito variadas e concordes com as mudanças de uma sociedade ao longo de sua história? As tentativas atuais de órgãos internacionais de promover uma legislação anticorrupção e de enfrentar/perseguir casos evidentes e graves, em defesa de normas de comportamento internacional concordes com legislações nacionais para estabilizar um sistema de conjuntos estatais que se declararam a favor de valores comuns, seriam dignas de comparação com as políticas imperiais da época moderna. A multiplicação de impérios formais no início do século XIX em uma fase de restauração, depois das guerras revolucionárias, responderam a tentativas similares. No todo, é um grande tema, digno de aprofundamento por historiadores mais jovens.
A política da memória constitucional
Authors: B. Siegel Reva
Published: July 2023

Aquelas que buscaram o direito ao voto para as mulheres reivindicaram liberdade e igualdade na família, baseadas em princípios sobre os quais o direito constitucional fora desenhado, mas não há nenhum traço de suas vozes ou reivindicações no direito constitucional. A Suprema Corte raramente menciona a décima nona emenda ao interpretar a Constituição. A Suprema Corte sequer menciona, em suas decisões, aquelas que lideraram a busca das mulheres por voz política ou os argumentos constitucionais que adotaram em apoio ao voto feminino, embora esses argumentos tenham sido propagados nos dois últimos séculos. Não existe um método de interpretação, que os ministros empreguem, de forma consistente, capaz de explicar esse silêncio normativo. Este artigo introduz o conceito de memória constitucional para explicar esse silêncio em nossa lei. Intérpretes constitucionais criam memórias constitucionais ao questionarem sobre o passado de forma que possam orientar decisões futuras. O papel da memória constitucional é legitimar o exercício da autoridade; mas a memória constitucional desempenha um papel especial na legitimação do exercício da autoridade quando a memória constitucional diverge sistematicamente da história constitucional. A divergência sistemática entre a memória constitucional e a história constitucional pode legitimar a autoridade, aparentando consentir com relações de status contestadas e destruindo o vernáculo da resistência. Embora as mulheres contestem sua falta de autoridade política na ordem constitucional ao longo de dois séculos, não há vestígios de seus argumentos no direito constitucional. Para ilustrar, o artigo examinará o longo debate do argumento sufragista, que começou antes das emendas da reconstrução e continuou evoluindo após a ratificação da décima nona emenda: que as mulheres precisavam do voto para democratizar a família. Dois séculos de argumentações constitucionais não são refletidos na jurisprudência da Suprema Corte dos Estados Unidos. Como consequência, as doutrinas constitucionais sobre liberdade e igualdade na família parecem não ter antecedentes históricos. Mas o argumento, dentro e fora dos tribunais, pode contrariar a política da memória constitucional. Ministros, independente de sua orientação, regularmente fazem alegações heterodoxas sobre o passado. Intérpretes constitucionais podem invocar as vozes dos desprivilegiados e as preocupações que os desafortunados trouxeram para a reconstrução democrática da América. Imagine como outras gerações poderiam entender nossa Constituição se assim o fizemos.
Legislação, parcelamento do solo e expansão urbana dos municípios do CRAJUBAR cearense no pós-criação da região metropolitana do Cariri
Authors: Coelho do Nascimento Diego , Sales Torres Pedro George
Published: July 2023

O presente artigo apresenta reflexões jurídicas e socioespaciais relacionadas à expansão urbana dos municípios de Crato, Juazeiro do Norte e Barbalha, conjunto de cidades conhecido como "triângulo CRAJUBAR”. O artigo objetiva correlacionar a expansão urbana e a legislação urbanística de parcelamento, uso e ocupação do solo nos municípios do CRAJUBAR no pós-criação da Região Metropolitana do Cariri no período compreendido entre 2009 a 2021. A pesquisa em questão se classifica quanto à abordagem quali-quantitativa, com objetivos exploratório/explicativos de procedimentos mistos de levantamento bibliográfico e análise documental. Concluiu-se que há uma crescente expansão urbana das cidades estudadas, como também problemáticas na elaboração dos Planos Diretores, atraso na revisão das legislações municipais sobre o uso, parcelamento e ocupação do solo urbano, além de existir um apelo imobiliário pelo controle do solo.
Paulo Bonavides e a crítica aos juristas conservadores: como a suposta “neutralidade ideológica” favoreceu a erosão constitucional no Brasil
Authors: de Melo Ferreira Emanuel
Published: July 2023

Paulo Bonavides é um pensador do direito fundamental para compreender a atual crise da democracia brasileira, eis que sua expressiva e influente obra em Direito Constitucional e Ciência Política busca explicar as razões para o distanciamento entre as instituições nacionais e os anseios sociais. Atento ao ataque neoliberal contra o Estado Social, o autor sustentava como tal ideologia promove golpes de estados institucionais, derrubando a Constituição. Dentre as críticas efetivadas ao neoliberalismo, destaca-se aquela característica que tem se mostrado como uma das armas mais poderosas dos juristas conservadores no Brasil: a suposta “neutralidade ideológica”. Assim, o presente artigo indaga em que medida tal tese contribuiu para a tentativa de golpe de Estado em janeiro de 2023. A metodologia proposta passa pela compreensão das lições de Bonavides para, em seguida, aplicá-las à realidade atual buscando aliar teoria e prática a partir de compreensão do direito a qual admite a conexão entre direito e política, com especial atenção aos fatos históricos no âmbito da tridimensionalidade jurídica. Conclui-se argumentando que a deslegitimação e a intimidação geradas a partir do uso oficial da “neutralidade” em face da atuação daqueles que lutavam contra o processo erosivo constitucional compõe um dos fatores que facilitou a eclosão do golpismo, na medida em que atuou para impedir a prevenção deste.
Interaction of Brain-derived Neurotrophic Factor, Exercise, and Fear
Extinction: Implications for Post-traumatic Stress Disorder
Authors: Antolasic Emily J. , Jaehne Emily J. , van den Buuse Maarten
Published: July 2023

Brain-Derived Neurotrophic Factor (BDNF) plays an important role in brain development,
neural plasticity, and learning and memory. The Val66Met single-nucleotide polymorphism is a common
genetic variant that results in deficient activity-dependent release of BDNF. This polymorphism
and its impact on fear conditioning and extinction, as well as on symptoms of post-traumatic stress
disorder (PTSD), have been of increasing research interest over the last two decades. More recently, it
has been demonstrated that regular physical activity may ameliorate impairments in fear extinction and
alleviate symptoms in individuals with PTSD via an action on BDNF levels and that there are differential
responses to exercise between the Val66Met genotypes. This narrative literature review first describes
the theoretical underpinnings of the development and persistence of intrusive and hypervigilance
symptoms commonly seen in PTSD and their treatment. It then discusses recent literature on the
involvement of BDNF and the Val66Met polymorphism in fear conditioning and extinction and its involvement
in PTSD diagnosis and severity. Finally, it investigates research on the impact of physical
activity on BDNF secretion, the differences between the Val66Met genotypes, and the effect on fear
extinction learning and memory and symptoms of PTSD.
Current Leads and Marketed Formulations for an Effective Treatment of
Fungal Infections
Authors: Basak Trambak , Goyal Amit K.
Published: July 2023

Severe antifungal infections, especially opportunistic fungal infections, are increasing tremendously
in immunocompromised patients. This is basically because more patients enduring neoplastic
diseases lead to the wide use of chemotherapy, thus causing immunosuppression. Patients with
HIV infection, burns, pancreatitis and neutropenia are also amenable to fungal infections. Out of a
plethora of antifungal drugs applied, Amphotericin B, being a broad-spectrum antimicrobial drug, has
been the gold standard treatment for a diverse variety of fungal infections since the 1950s and visceral
leishmaniasis since the 1960s. However, Amphotericin B has major constraints of poor bioavailability
and kidney toxicity, due to which newer antifungal compounds are being used. This article discusses
fungal and parasitic diseases and formulations for treating these ailments.
An investigation of ICT skills among Tamil language teachers in primary schools and the adequacy of ICT facilities: A quantitative study
Authors: Ponniah Kartheges , Thannimalai Tamilmullai , Sathiamoorthy B. , Thirunavukkarasu S.
Published: July 2023

This research delves into an examination of the ICT skills possessed by Tamil language teachers in primary schools and assesses the adequacy of ICT facilities available at the school level. In light of the ongoing transition from traditional teaching methods to information-based strategies, the Malaysian Ministry of Education has implemented the Malaysian Education Development Plan 2013-2025 to promote the integration of ICT among teachers. This study focuses specifically on Tamil language teachers, aiming to determine whether their ICT skills align with the available ICT resources in their respective schools. The investigation highlights various challenges faced by teachers, including limited budgets for ICT, hardware constraints, lack of English training to effectively utilize ICT, inadequate support, and insufficient time allocated for ICT-related activities. Conducted as a quantitative study, the research involved a sample of 60 Tamil teachers. The findings reveal that the ICT capability of Tamil language teachers stands at a moderate level, while the ICT facilities in their schools fall short of meeting their requirements. This underscores the correlation between teachers' interest in using ICT in their teaching practices and the availability of suitable facilities to support their endeavors. In conclusion, this study emphasizes the critical role played by ICT facilities in schools in facilitating the effective use of ICT-based teaching aids, enhancing the ICT skills of teachers, and promoting an environment conducive to effective teaching and learning. Consequently, the research strongly advocates for schools to provide adequate and appropriate ICT facilities to empower teachers in making optimal use of ICT in their teaching practices.
The impact of mutation on the career development of civil servants in the educational sector: A case study in Serang City, Banten Province, Indonesia
Authors: Murni Murni , Hidayat Sholeh , Anriani Nurul
Published: July 2023

This research endeavors to investigate the influence of mutation on the career development of civil servants working in the educational sector within Serang City, Banten Province, Indonesia. Employing a quantitative approach with a case study design, the study employs a survey research method utilizing correlational techniques through multiple linear regression analysis. The primary data for this investigation consists of information pertaining to the career development of civil servants in the educational staff of Serang City, Banten Province, which was directly gathered from the research respondents via a questionnaire. The findings of the study reveal a positive correlation between mutation and the career development of civil servants in the educational staff of Serang City, Banten Province, Indonesia. This implies that when targeted modifications are implemented, they are likely to be followed by improvements in the career development of civil servants working in the educational sector in the specified region.
TAXATION AS AN ALTERNATIVE TO ENCOURAGE IDLE LAND DEVELOPMENT
Authors: Abd Hamid Muhamad Norfiqiri , Md Yunus Norhidayah , Berahim Nur , Zainudin Ainur Zaireen , Mohd Ali Hishamuddin , Najib Muhammad , Razali Mohamed , Mohd Yusoff Nurul Syakima , Md Azmi Fatin Afiqah
Published: July 2023

The topic of idle land, especially in agriculture, seems to have a consequence on both agricultural production and land utilization. Malaysia's government normally takes a diplomatic approach to idle land concerns, providing financial assistance, facilities, and agricultural input to urge landowners to develop the idle lands. Actual studies on the global scale, however, indicated that certain countries took a tough stance by implementing the idle land tax. Hence, the aim of the research is to look into nine countries' idle land taxation implementation. Secondary data were analysed using comparative and thematic analysis to examine the key aspects of idle land tax application. The study identified five fundamental aspects that are critical to the application of idle land taxes. Based on these findings, Malaysia now has new options for idle land enforcement that it may adopt in the future if diplomatic strategies no longer have an influence on Malaysia's approaches to overcome idle agriculture land issues.
The Evolution of the Institution of Error in the Criminal Law of Russia
Authors: Novichkov V. E.
Published: July 2023

Relevance. An analysis of the legal literature shows that when defining an error in criminal law, lawyers use different conceptual categories, which confuses the understanding and qualification of a legal or factual error. In this connection, the article considers the genesis of the institution of error in the criminal law of Russia, in particular, the classical approach to understanding, defining and systematizing errors, fixing the position that the only basis for criminal liability is the commission of an act that contains signs of all elements of a crime. In the article, the problem of an error in the current criminal law of the Russian Federation is revealed from the standpoint of the need to establish the internal attitude of the subject both to actions (inaction) and to the consequences in real life, to each legally significant objective sign of a particular act.The purpose of the study is to analyze the improvement of the institution of error in the criminal law of the Russian Federation.Objectives: to analyze the special historical and modern literature on the genesis of errors in domestic criminal law and, based on the current law, the achievements of the domestic science of criminal law, to summarize the experience of defining and logic-linguistic concepts of criminal law error.Methodology. The research was based on the application of philosophical methods for studying the categories that make up the concept of a criminal law error, as well as on general scientific methods: system-structural, analysis and synthesis; specific legal, comparative legal analysis of documents, content analysis of texts, etc.The results of the study are distinguished by the theoretical and applied orientation of the genesis of the institution of error in domestic criminal law and the identification of the most complete characteristics of the concept of criminal law error. Conclusion. Based on the results of the study, it is stated that the modern understanding of the institution of error takes into account historical approaches to the considered phenomenon in Russian criminal law, is based on them and corresponds to the criminal policy of the Russian Federation.
Optimization of the Application and Legislative Regulation of Arrest as a Measure of Criminal Legal Impact
Authors: Korneev S. A.
Published: July 2023

The relevance of the study is due to the lack of implementation of the punishment in the form of arrest in law enforcement activities, which narrows the variability of the means of criminal legal influence of the state in the fight against crime and does not reveal the true potential of the declared measure of state coercion.Purpose: to formulate proposals concerning the optimization of the application and legislative regulation of arrest as a measure of criminal legal impact.Objectives: to investigate the legal nature of arrest in accordance with the norms of national legislation; to reveal the essence of arrest in general and arrest as a type of criminal punishment in particular; to identify the distinctive features of arrest and deprivation of liberty as isolation measures of state coercion; to summarize the results obtained.Methodology. The methodological basis of this study is presented by the dialectical method of scientific cognition. In the course of the research, private scientific methods of cognition used in the humanities were also used, which made it possible to investigate arrest as an optimal measure of criminal legal impact.Results. Based on the analysis of the current legislation, statistical data, theoretical research, a proposal has been formulated regarding the appointment and execution of arrest as a type of criminal punishment.Conclusions. Arrest is an effective alternative to imprisonment as a measure of State coercion. In view of the increased severity of arrest in relation to other punishments related to the isolation of a person from society, as well as the vector of development of modern criminal policy, it seems advisable to reconsider the grounds for his appointment, excluding its implementation for the commission of crimes of small or medium gravity. It seems that the rational basis for the application of arrest is a legal fact in the form of committing a serious crime for the first time.
Legal Support for the Prevention of Cybercrime in the Russian Federation and the Republic of Kazakhstan
Authors: Karabekov K. O.
Published: July 2023

Relevance. The content of their legal support is of great importance in the prevention of crime, including cybercrime in Russia and Kazakhstan. Cybercrime legislation in Russia and Kazakhstan is diverse and has its own peculiarities. It is relevant to study the content and system of legal measures to prevent cybercrime in Russia and Kazakhstan and to develop a unified approach to the systematization of regulatory legal acts aimed at ensuring cybersecurity and preventing cybercrime.Purpose. The aim is to identify shortcomings and develop proposals to improve the effectiveness of legal support for the prevention of cybercrime in the Russian Federation and the Republic of Kazakhstan.Objectives. to study and compare the content of international legal acts, regulatory legal acts of the Russian Federation and the Republic of Kazakhstan on the prevention of cybercrime and cybersecurity.Methodology. The basis of scientific research was the universal dialectical method. A general scientific method of analysis was also used, which made it possible to systematize regulatory legal acts on the prevention of cybercrime. The method of scientific synthesis was used for the author's presentation of legal support for the prevention of cybercrime. The method of comparative jurisprudence has become the basis for the characterization of legal support for the prevention of cybercrime in legal science and in the legislation of the Russian Federation and the Republic of Kazakhstan.Results. In the course of the study, the shortcomings of the systematization of legislation on the prevention of cybercrime in the Russian Federation and the Republic of Kazakhstan were identified, the classification of relevant regulatory legal acts on the basis of the subjects that adopt them was proposed.Conclusion. For a deeper disclosure of the system of regulatory legal acts related to cybersecurity and the prevention of cybercrime in Russia and Kazakhstan, the exclusion of gaps in legal regulation, as well as their duplication, their complete classification is necessary on the basis of the entities that accept them.
On the Question of the Biography of the First Generalissimo of Russia A. S. Shein
Authors: Likhobabina A. I.
Published: July 2023

Relevance. The article attempted to analyze the history of the development of the old Moscow boyar family of the Sheins and the formation of the personality of the first Russian generalissimo Alexei Semenovich Shein. The ancient clans continued to occupy a dominant position in government, proving their worth for several centuries. In the XVII century, there were 19 first-class clans who enjoyed the privilege of appointment to the rank of boyar, bypassing the rank of okolnichy. The presence of unexplored lacunae and "white spots" in the biography of A.S. Shein in accordance with the lack of serious studies devoted to various aspects of his life and activity, allows us to talk about the relevance of addressing this scientific problem.The purpose of the study is to build on the basis of modern achievements of historical science a biography of such an extraordinary personality in Russian history, which was represented by the first generalissimo A. S. Shein.Objectives: to analyze the available historiography devoted to various aspects of the life and work of A. S. Shein; to identify and clarify the available information about the origin of the Shein boyar family and their contribution to the history of Russia; to present the main milestones of the life of the generalissimo.Methodology. In the process of working on the study, prosopographic and comparative historical methods, analysis, synthesis, generalization, induction and deduction were used.Results. The conducted research allowed us to expand our understanding of such an extraordinary personality as A.S. Shein, contributed to a considerable extent to the debunking of a number of existing mythologies both about him and about this period in Russian history.Conclusin. A. S. Shein belonged to an ancient boyar family, having managed to leave a mark in the history of Russia during his bright and eventful life. His military and state activities were appreciated even by such a supporter of Westernization as Peter the Great. However, it is possible to convincingly declare the prospects for further development of this problem due to the many "white spots".
Everyday Life of Kursk Railway Workers in the 1920s-1930s
Authors: Korovin R. V.
Published: July 2023

The relevance of the stated topic lies in the need to improve the social policy of the state and large corporations aimed at creating favorable working and leisure conditions for employees, allowing them to perform their professional duties as efficiently as possible. Generalization of the experience of providing housing for railway workers in historical retrospect focuses on the successful solution of the problems that arise today. the lack of specialized research on the stated topic provides an opportunity to fill in the gaps in the reflection of the socio-economic history of Russia and the region in the first half of the twentieth century.The purpose of the study is to characterize the living conditions of Kursk railway workers in the 1920s and 1930s on the basis of archival sources and published works.Objectives: on the basis of the identified sources to reflect the issues of providing railwaymen with housing; to note the role of authorities and public organizations in creating decent living conditions for transport workers; to determine the specifics of providing public services to Kursk railwaymen.Methodology. The research was based on the principles of objectivity and historicism. To solve the tasks set by the author, the methods of historical-genetic, historical-systemic, historical-comparative, typological, retrospective were used.Results. The study of housing and living conditions of railway workers allowed us to give a detailed description of one of the key factors in the organization of labor activity of employees associated with the performance of an important state function for the transportation of passengers and cargo across the country and beyond.Conclusions. A significant increase in the volume of housing construction in the 1920s-1930s at the Kursk railway junction, the improvement of housing and living conditions of railway workers' families undoubtedly had a positive impact on the industrial and socio-political activity of railway transport workers.
Subject Composition of the Contract of Trust Management of the Property of the Missing Person
Authors: Nagalina M. V.
Published: July 2023

Relevance. A missing person is not a ground for terminating the legal relationship in which he or she was involved. The missing person's property should be preserved and protected from the claims of third parties. For this purpose it is advisable to conclude a property trust agreement. However, the legislation contains gaps with regard to the procedure of its conclusion, which leads to unjustified refusals successfully appealed by the persons concerned in court. Their elimination will make it possible to apply this construction more often on the basis of the provisions of a single legal act enshrining the procedure for concluding an agreement and its standard form.The purpose is to substantiate the need to improve the legislation regulating the legal position of the subjects of the contract of trust management of the property of the missing person, including when it is concluded.Objectives are to identify the features of the legal regulation of the contract of trust management of the property of the missing person; to determine the criteria for the trustees of the studied agreement; to substantiate and formulate proposals for the improvement of civil legislation in the analyzed sphere.Methodology. The methods of analysis and synthesis, comparison, the method of ascending from the abstract to the concrete and the formal-legal method were used in the study.Results are of a theoretical and applied nature and contain suggestions for improving the legislation in terms of trust management of the property of the missing person in order to eliminate gaps in the law and increase the frequency of its use by the guardianship and trusteeship authorities.Conclusion. Contradictions to the civil legislation of rules of trust management of property of the missing person in subjects of the Russian Federation are revealed, for elimination of which it is offered to develop uniform regulations of definition of the candidate of the trustee of property of the missing person and order of the conclusion of the corresponding contract. It has been determined that when selecting a candidate for a trustee, a guardianship authority should take into account the necessary knowledge and skills, confirmed by documents; absence of a negative history of guardianship before and tax debts. It is proposed to create a unified database of trustees of the property of the missing person.
Formation of Nanocomposite Structures under Laser Irradiation λ = 1.064 µm DVD-R Coated with Aluminum Foil
Authors: Kopytov G. P. , Stavtsev A. Yu. , Kuzmenko A. P. , Zhakin A. I. , Filippov V. V. , Neruchev Yu. A.
Published: July 2023

Purpose. Obtaining, characterization and mathematical description of atomic force microscopic images of 1D-dimensional whisker-like nanocomposite structures formed under the conditions of high-intensity laser processing using.Formation of polycarbonate with inner thin layers of Al, semiconductor metals Si, Sb, Te, Ge, and ZnS and SiO2 compounds in a DVD-R-5 disc covered with aluminum foil.Methods. Applied pulsed laser radiation for laser processing of DVD-R-5 was used. The methods of confocal, atomic force and scanning electron microscopy to study microand nanostructuring after laser processing of DVD-R-5 patterns were used. The direct and inverse Fourier transforms atomic force images were carried out. Analysis of solutions to the heat balance equation as applied to the results of laser processing was performed.Results. Under high-speed exposure to laser radiation (TEM01 or TEM10 modes) on a DVD-R-5 sample coated with aluminum foil, VNS were detected and studied. With the help of direct and inverse Fourier transforms on atomic force images of the surface after laser processing, the periodicity of the formed VNS was confirmed. It is shown that the process of DVD-R-5 laser processing is adiabatic, the propagation velocity of the melting wave front exceeds the sonic one in polycarbonate. The conclusion about the formation of VNS due to self-focusing and filamentation of laser radiation in the reflected diffracting beams of each of the mode components is substantiated.Conclusion. Under conditions of high-intensity laser processing by repetitively pulsed laser radiation with the TEM01 or TEM10 modes, 1D-dimensional VNSs are formed with a thickness at the base of up to 0.5 μm and a height of more than 1 μm, the composition of which can include both conductors, semiconductors, and their compounds. The resulting WNSs have a highly developed ordered surface structure, which may indicate that their application is promising.
On the Development of Injection Cathode Electrodes for EHD Transducers
Authors: Kuzko A. E. , Zhakin A. I. , Kuzko A. V. , Ignatenko N. M. , Barsuk E. S. , Zubareva M O. , Bondarev M. A.
Published: July 2023

Purpose To study the possibility of changing cathode injection in a grid axisymmetric EHD transducer with planeparallel modified electrodes.Methods. An estimate of the influence of the edge effect of electrode grids on the surface conductivity in the periphery of the interelectrode gap was obtained by numerical simulation, and the optimal geometry of the electrode holders of the grid EHD transducer was determined. Using the method of numerical calculation in the software environment Agros 2D, as well as using the analysis of SEM scans and the method of estimating the form factor of structures, the parameters of local electric fields of the structures of the surfaces of wires of grid electrodes modified during laser scribing were obtained.Results. The results of the development of a grid system of electrodes for electrohydrodynamic converters with enhanced cathodic charge injection are presented. The influence of the edge effect on the operation of EHD transducers is analyzed. The possibility of improving the grid electrode system of a model EHD pump is described. The composition and shape of microand nanostructures after scribing on the FMark-20RL laser marking complex have been studied. A qualitative estimate of the local electric field strength on nanostructures obtained by laser scribing of brass grids with a characteristic radius of 50 nm is made, which indicates an increase in the cathode injection of negative charges in the EHD system. With a distance between the electrodes of 1.5 mm and a potential difference between the electrodes of 1.5 kV/cm, the magnitude of the local tension at the top of the nanostructure with a curvature radius of about 50 nm can reach 5.5⋅107 V/cm.Conclusion. Laser scribing in the form of concentric circles of brass grid electrodes makes it possible to intensify cathodic charge injection by amplifying local electric fields from microand nanostructures. The use of plexiglass dielectric holders can reduce surface leakage currents at the periphery of grid electrodes.
Influence of Powder Charge Composition on the Structure and Properties of T15K6 Hard Alloy
Authors: Alimzhanova А. М. , Eremeeva Zh. V. , Nozhkina A. V. , Levina V. V. , Nitkin N. M. , Orlov V. L.
Published: July 2023

The purpose of the study is to determine the effect of nanosized additives on the structure and properties of the T15K6 hard alloy.Methods. These studies were carried out using an S-3400N electron microscope. The mechanical and physical properties of the structure of a hard alloy of the WC-TiC-Co system were studied using the example of T15K6 when nanosized tungsten powder and nanosized tungsten carbide powder with cobalt deposited on it were introduced into the initial charge using an optical and electron microscope; An X-ray spectrum analysis of the obtained samples of the T15K6 hard alloy was carried out on a DRON-4 X-ray diffractometer.Results. A hard alloy of the WC-TiC-Co system was studied with the introduction of nanosized tungsten powder into the initial charge, as well as with the introduction of nanosized tungsten carbide with cobalt deposited on its surface.In the work, the used powders of tungsten, nano-tungsten, cobalt, titanium carbide, tungsten carbide, nano-powder of tungsten carbide were studied, and the microstructure of the obtained hard alloys was also studied. It is shown that the coercive force of the T15K6 alloy depends on the size of the cobalt phase regions in the alloy; measuring its value makes it possible to judge the size of carbide grains. To improve the strength properties of hard alloys of the WC-TiCCo system, it is recommended to introduce nanosized WC additives or WC nanopowder with deposited cobalt.Conclusion. To improve the strength properties of hard alloys of the WC-TiC-Co system, it is recommended to introduce nanosized WC additives or WC nanopowder with deposited cobalt. The introduction of these additives into the composition of the powder charge of the T15K6 hard alloy leads to an increase in the ultimate bending strength by 15%. The introduction of nanosized WC additives or WC nanopowder with deposited cobalt makes it possible to obtain a fine-grained structure with a grain size of no more than 4–6 μm.
Study of the Sorption of Phenol with Non-Food Waste Wheat Processing
Authors: Burykina O. V. , Konovaltseva Z. S. , Volvenkina К. V.
Published: July 2023

The purpose of the work is to study the process of phenol sorption by wheat processing wastes. Much attention is paid to environmental protection in the modern world, especially water resources, since clean water is necessary for human existence. Modern enterprises of various industries and agriculture are increasingly introducing waste-free technologies or highly efficient wastewater treatment methods into production. One of the simple in hardware design and implementation, but very effective, is the sorption method. The use of production waste as sorbents is very promising, because. allows, in addition to the environmental problem, to solve the issue of disposal or recycling of production waste.Methods.When studying the composition of chaff wheat, the following methods were used: determination of ash and moisture by weight; cellulose nitrogen-alcohol, pentosans spectrophotometric with orsin, lignin Komarov's method. Sorption of phenol by wheat processing waste was carried out by the method of single-stage static sorption at a temperature of 250C.Identification of the nature of phenol sorption by non-food waste from grain processing was carried out using the IR spectroscopy method. Using the Nicoleti S50 FT-IR IR-Fourier spectrometer without molding tablets in the range of 4000 400 cm-1, the IR spectra of phenol, wheat chaff and wheat chaff after phenol sorption were taken.Results. Analysis of the chemical composition of wheat waste (chaff) showed that the main components are cellulose (34.8%), pentazans (19.7%), lignin (23.1%).When analyzing the obtained IR spectra, it was found that in the IR spectrum of non-food waste from wheat processing after phenol sorption, a peak appears at 2323.37 cm-1, which is associated with the formation of a bond between the mobile hydrogen atom of the benzyl alcohol group of lignin with the hydroxyl group of phenol .Conclusion. IR-spectroscopic study of the process of sorption of phenol by non-food waste from wheat processing (chaff) showed that during the sorption of phenol, a chemical bond arises between the sorbent and the sorbate, which manifests itself in the IR spectrum as a new absorption band.
Isotherms of the Sorption of Fe2+, Fe3+ Ions by Industrial Waste from Aqueous Solutions
Authors: Lysenko А. V. , Molokoedova Т. A. , Sokolova Yu. V.
Published: July 2023

The purpose of this work was to study the isotherms of the process of sorption of Fe2+, Fe3+ ions by industrial waste from aqueous solutions.Methods. As a sorbent, technogenic wastes from sugar production (defecation mud of Lgovsky Sugar Plant JSC), leather industry (chrome shavings from the Kursk Tannery OOO Kursk Kozha) and aviation instrumentation enterprises (galvanic sludge from Aviaavtomatika JSC named after V.V. Tarasova"). Fe2+, Fe3+ ions were chosen as sorbates, since the problem of iron removal is especially relevant for the Kursk region, due to the conditions of formation and the peculiarities of the formation of natural and waste waters.As a scientific basis for the study of sorption, thermodynamic approaches are proposed, according to which sorption properties can be estimated by the value of the maximum working value of the transfer of a substance from a solution to the surface of sorbents. The mathematical models of Langmuir and Freindlich were used to describe the sorption isotherms. To determine the residual content of Fe2+, Fe3+ ions, calibration plots of the dependence of optical density on the concentration of Fe2+, Fe3+ ions in aqueous solutions were constructed using the sulfosalicylate photometric method.Results. According to the equations of Freundlich and Langmuir sorption isotherms, the sorption isotherms were processed and analyzed, and the parameters of the process of sorption of Fe2+, Fe3+ ions by production waste from aqueous solutions were determined. The spontaneity of this process is established.Conclusion. The results obtained showed the suitability of production waste as an inexpensive sorbent for the effective removal of Fe2+, Fe3+ ions from aqueous solutions in the range from 0.8636 to 8.636 g/dm3.It has been established that the sorption of Fe2+, Fe3+ ions on production waste occurs in the form of monolayer sorption on the surface, which is homogeneous in sorption affinity and is described by Langmuir isotherms, which is confirmed by a high value of the confidence approximation (R2 = 0.9909-0.9955).In the course of the work, it was found that galvanic sludge and defecation exhibit the greatest sorption capacity.
On the Use of Repeated Low-Temperature Nitrocementation for Effective Hardening of the Crankshafts of KAMAZ Vehicles, Ground to Repair Dimensions
Authors: Kolmykov V. I. , Kostin R. Y. , Vorobyev Yu. S. , Kolmykov D. V.
Published: July 2023

Purpose of research the aim of the work is to develop an effective technology for surface hardening of the crankshafts of KAMAZ 740 engines, restored by re-grinding to repair dimensions, by means of their accelerated low-temperature nitrocementation in the conditions of car service (car repair) enterprises.Methods. Nitrocementation of the samples was carried out in a nitrogen-carbon paste. The samples with a nitrocementating coating were heated in a laboratory furnace with a vertical load of SSHOL-12-M3-U4. The nitrocemented samples were subjected to metallographic analysis using an Axio Observer.A1m optical microscope and a Quanta TM 3D200i electron scanning microscope. Phase analysis of diffusion layers on samples nitrocemented according to various modes was carried out on an XRD-7000S X-ray diffractometer. The microhardness of the nitrocemented samples was measured using a Duramin-5 microhardness meter with a computer and software. The hardness of the nitrocemented samples was measured on a TK-2M (Rockwell) hardness tester on the "A" scale according to the standard method.Results. The technology of low-temperature nitrocementation of nitrided crankshafts of KAMAZ vehicles after their repair by grinding with the removal of the hardened layer from the surfaces of the root and connecting rod necks is presented. It is shown that nitrocementation of 42HMFA steel, from which crankshafts are made, at a temperature of 520...580 °C for 3 hours in a highly active paste ensures the production of hardened layers in depth, structure, phase composition and hardness are almost identical to nitrided layers. Such nitrocementation can be a full-fledged and effective replacement for the re-nitriding of the restored shafts provided for in the technical documentation for the repair of KAMAZ engines, categories E-2, E-3 and E-4.Conclusion. The low labor intensity and technological simplicity of nitrocementation will allow it to be used to strengthen the crankshafts of all seven repair sizes provided for these parts, which can give a very large economic effect.
Расчет обтекания колеблющегося цилиндра с соосным диском в головной части при малых числах Рейнольдса
Authors: Рябинин А.Н. , Кауфман Д.В.
Published: July 2023

The hypothesis of curved models is used to calculate the flow around a cylinder performing damped
rotational oscillations in the air flow. The influence of a disk coaxially fixed in the head of the cylinder on the oscillations is studied. The elongation of the cylinder (the ratio of the length of the cylinder to its diameter) is nine. The diameter of the disk is equal to 0.6 of the diameter of the cylinder. It is assumed that the only reason for the damping of on the oscillations is aerodynamic force. The parameters characterizing the attenuation of rotational on the oscillations of the cylinder occurring
in the air flow at the Reynolds number Re = 750 are determined. It turned out that the presence of
a coaxial disk in the head leads to a faster attenuation of on the oscillations. This fact is in qualitative
agreement with the results of an experiment to determine rotational derivatives in a wind tunnel at
large Reynolds numbers. The hypothesis of quasi-stationary is applied in the calculation of translation vibrations of the cylinder. The parameter characterizing the damping of vibrations of a cylinder with a disk in absolute magnitude slightly exceeds the same parameter for a cylinder without a disk, which corresponds to the results of the experiment.
Экспериментальное исследование переноса вещества с поверхности сферической капли воды при обтекании плазменным каналом искрового разряда
Authors: Шорсткий И.А.
Published: July 2023

The results of an experimental study of the water (vapor) molecules transfer from the surface of a spherical droplet towards the anode when a spark discharge plasma channel flows at atmospheric pressure air are presented. Distilled water and sodium chloride aqueous solution were used in the experiments. Using a high-speed amplitude amplifier with a monitor output, the discharge current and voltage waveforms were obtained for four experiments: a spark discharge, a spark discharge with a drop of distilled water, a spark discharge with a drop of sodium chloride aqueous solution and a spark discharge with a multi-pointed anode structure and a drop of distilled water. Microstructural and energy dispersion analysis data were obtained to confirm the mechanism of substance transfer and the location of water molecules in the electric current closure zone of the spark discharge plasma channel on an aluminum substrate of a flat anode.
Характеристики емкостного высокочастотного разряда в магнитном поле с преимущественной радиальной составляющей
Authors: Швыдкий Г.В. , Задириев И.И. , Вавилин К.В. , Кралькина Е.А. , Никонов А.М.
Published: July 2023

The work presents the results of an experimental study of the characteristics of the RF capacitive discharge placed in a magnetic field with a predominant radial component. The experiments are performed in the plasma source, which has the geometry of a Hall thruster. The integrated characteristics of the discharge, as well as the axial distribution of the probe ion current in the channel of the plasma source, are measured using three diagrams of the organization of the external discharge circuit: with the open for DC discharge circuit, as well as in the combination of a capacitive discharge with a direct current discharge. The main measurements are made in the argon in the flowrate range of 0.75 - 1.8 mg/s and the power of the generator 80 - 300 W at a frequencies of 2, 4 and 13.56 MHz, the induction of the magnetic field lying in the range of 100 - 300 G. Evaluation of the parameters of the plasma engine based on capacitive RF discharge when working in air, argon and krypton are made.