bluuebunny/crossref_metadata_2025 huggingface dataset:
Comorbidities, infections and mortalities of COVID-19 in Bangladesh in the course of January-May 2022
Authors: Anayat Ullah Khan , Ahasan Ullah Khan , Foyj Ullah Khan , Shakhera Khanom
Published: July 2022

Background: COVID-19 is the extreme smash of the present-day century that emaciated fitness, financial system, and ordinary life. Objectives: This research assessed the condition and relation of tests, infections, recoveries, and deaths of SARS-CoV-2 from January to May 30, 2022. Methods: The research plan was carried out from January 1 to May 31, 2022 (n = 151 days) to state the position of Bangladesh towards widespread COVID-19. The facts in this study became acquired from extraordinary government groups. Results: The total cases, infections, recoveries, and deaths were 2633750, 367208, 357309, and 1053, respectively, during the study period. In January 2022, the total number of COVID-19 tests, infections, recoveries, and deaths was 987194, 213294, 19112, and 315, respectively. In February 2022, the total number of COVID-19 tests, infections, recoveries, and deaths was 922657, 143744, 250422, and 643, respectively. In March 2022, the total number of COVID-19 tests, infections, recoveries, and deaths was 353555, 5810, 49727, and 63, respectively. In April 2022, the total number of COVID-19 tests, infections, recoveries, and deaths was 152691, 977, 12490, and 7, respectively. In May 2022, the total number of COVID-19 tests, infections, recoveries, and deaths was 127950, 1016, 6166, and 4, respectively. The maximum and the minimum number of COVID-19 tests were 49492 and 1653 on January 25 and May 4, respectively. The maximum and the minimum number of COVID-19 infestations were 16033 and 1653 on January 22 and May 5, respectively. The maximum and minimum number of COVID-19 recovered were 13853 and 1653 on February 13 and May 9, respectively. The maximum and the minimum number of COVID-19 death was 43 and 0 on February 8 and in several days in 2022, respectively. In the 0.01 level of the two-tailed Spearman, the relationship was positive to moderate to strong relationships and the total number was n=151. The mean Spearman correlation for tests was 0.83 (range 0.973 to 0.633), for infested was 0.81 (range 0.579 to 0.973), for recovered was 0.61 (range 0.633 to 0.618), for death was 0.81 (range 0.553876 to 0.618). This research additionally showed a moderate to strong relationship between tests, infections, recoveries, and deaths of SARS-CoV-2. Conclusion: COVID-19 has spread out unexpectedly to 64 districts in Bangladesh. The persevering with the occurrence of COVID-19 infections has emphasized the significance of the short and accurate and advanced 118 laboratory diagnoses to restriction it unfolds. In this situation, human beings must keep away from public gatherings as plenty as possible and pass return home as speedy as possible after finishing work in a public place. It is safer now because the vaccine controlled the infestation and death rate of COVID-19 in Bangladesh.
INSUFICIÊNCIA VALVAR MITRAL SECUNDÁRIA/FUNCIONAL
Authors:   Instituto Dante Pazzanese de Cardiologia, de Oliveira Ramos Auristela Isabel , Siqueira Dimytri Alexandre ,   Instituto Dante Pazzanese de Cardiologia, de Andrade Vilela Andrea ,   Instituto Dante Pazzanese de Cardiologia
Published: July 2022

O funcionamento da valva mitral depende da perfeita interação entre o átrio esquerdo, o anel valvar mitral, os folhetos valvulares, as cordas tendíneas, os músculos papilares e o ventrículo esquerdo. Qualquer alteração em algum desses componentes pode levar à regurgitação ou insuficiência valvar. A insuficiência mitral é classificada como secundária ou funcional quando decorre de doenças que acometem o AE ou o VE, resultando em dilatação do anel mitral ou deslocamento dos músculos papilares com tracionamento de cordas tendíneas, levando à coaptação inadequada dos folhetos da valva mitral. Essa diferenciação é fundamental, uma vez que a decisão terapêutica e os desfechos clínicos diferem nesses dois grupos. A causa mais comum de insuficiência mitral secundária é a miocardiopatia isquêmica. O diagnóstico se baseia na história clínica e avaliação eco-cardiográfica. O tratamento é potencialmente clínico, otimizado e dirigido para a doença de base. Recentemente, o tratamento percutâneo tem sido utilizado para tratamento de insuficiência cardíaca refratária ao tratamento clínico.
ESTENOSE AÓRTICA CALCIFICA E BIVALVAR –DIAGNÓSTICO
Authors:   Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Egypto Rosa Vitor Emer , Pereira Lipari Layara Fernanda Vicente ,   Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Vieira Marcelo ,   Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Tarasoutchi Flavio ,   Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo
Published: July 2022

A estenose aórtica tem sido alvo de diversos estudos e inovações nos últimos anos. Sua etiologia mais comum é a degenerativa, seguida pela bicúspide e reumática. A valva aórtica bicúspide apresenta fenótipos diferentes de acordo com a presença e número de rafes e essa classificação anatômica também guarda relação com a dilatação aórtica. É considerada anatomicamente importante quando apresenta prin-cipalmente área valvar ≤1 cm² e/ou área indexada ≤0,6 cm²/ m², e gradiente médio entre ventrículo esquerdo e a aorta ≥40 mmHg. Contudo, alguns pacientes com área valvar grave (≤1 cm²) não apresentam gradiente elevado, seja por disfunção sistólica (fração de ejeção abaixo de 50%) ou diastólica (volume sistólico inferior a 35 ml/m²), e a investigação pode ser complementada com ecocardiograma de estresse (nos casos de disfunção sistólica com reserva contrátil) ou com angiotomografia com escore de cálcio valvar aórtico (para aqueles sem disfunção ventricular ou sem reserva contrátil). Em alguns casos, outros exames complementares podem ser úteis, como o ecocardiograma transesofágico 3D nos casos de dúvida diagnóstica para realizar a avaliação da área valvar por planimetria ou o teste ergométrico para avaliar pacientes assintomáticos, que podem estar sintomáticos e autolimitados em até 2/3 dos casos. Além disso, a angiotomografia de aorta pode trazer dados sobre diâmetros e medidas da aorta e vias de acesso para implante de valva aórtica trans-cateter, auxiliando no planejamento do procedimento, pesquisando contraindicações e prevendo possíveis complicações.
INSUFICIÊNCIA AÓRTICA – DIAGNÓSTICO
Authors:   InCor - Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da USP (HC FMUSP), de Santis Andrade Lopes Antônio Sérgio , Cian Nazzetta Daniella ,   InCor - Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da USP (HC FMUSP), Kirschbaum Marcelo ,   InCor - Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da USP (HC FMUSP)
Published: July 2022

A insuficiência aórtica (IAo) é considerada uma alteração cardiológica importante que gera uma regurgitação do sangue através da artéria aorta gerando uma sobrecarga de volume e pressão no ventrículo esquerdo (VE). A cirurgia é reservada para os pacientes que possuem sintomas, sendo o principal deles a dispneia. A classificação do mecanismo subjacente à IAo foi proposto por El Khoury em 2005 e consiste na seguinte divisão: tipo I, IAo secundária à dilatação do anel aórtico; tipo II, prolapso de cúspide; tipo III, restrição da mobilidade das cúspides, causada por espessamento ou retração das cúspides. A suspeita clínica no paciente com IAo se dá por quadro clínico sugestivo, associado a achado no exame físico de um sopro diastólico em foco aórtico ou outros sinais da doença, como pressão arterial divergente, podendo levar a existência do Pulso de Corrigan (pulso martelo d’água), sinal de Quincke, dança das artérias, sinal de Muller, entre outros. O ecocardiograma transtorácico (ECO TT) é o principal exame na avaliação do paciente com suspeita clínica de IAo já que, além de confirmar a presença da lesão valvar, é com ele que avaliamos a gravidade da doença e a presença de repercussão hemodinâmica no coração e na circulação pulmonar. Quando o ECO TT não nos traz informações suficientes para definição da gravidade e/ou complicadores da doença, podemos lançar mão tanto do ecocardiograma transesofágico quanto da ressonância magnética cardíaca para tal fim
INSUFICIÊNCIA AÓRTICA – INDICAÇÃO PARA INTERVENÇÃO
Authors:   nstituto do Coração (InCor) da Faculdade de Medicina da Universidade de São Paulo (FMUSP), Lemes da Silva Michel Victor , Sândoli de Brito Junior Fábio ,   nstituto do Coração (InCor) da Faculdade de Medicina da Universidade de São Paulo (FMUSP), Moreira Bento André ,   Hospital Sírio-Libanês, Marchi da Rocha Aloisio ,   Hospital Sírio-Libanês,   Pontifícia Universidade Católica de Campinas
Published: July 2022

A indicação de intervenção da insuficiência aórtica importante baseia-se principal-mente no aparecimento de sintomas relacionados à valvopatia, uma vez que o tratamento medicamentoso não está associado à redução de desfechos cardiovasculares. Dentre esses sintomas, destacamos o surgimento da dispneia decorrente do aumento da pres-são capilar e congestão pulmonar e, com menor frequência, o surgimento de angina e episódios de síncope. Alterações hemodinâmicas como a queda da fração de ejeção para valores abaixo de 50%, bem como a dilatação importante do ventrículo esquerdo também são situações em que a intervenção é bem indicada. Há uma tendência em que a troca valvar aórtica por uma prótese biológica ou mecânica seja o procedimento de eleição. Porém, algumas situações específicas também podem favorecer a plástica da valva aórtica ou a realização da TAVI. Em outras situações, a abordagem concomitante da aorta também pode ser necessária quando seu diâmetro estiver elevado.
Turnover Intention Among Insurance Employees: Examining the Role of HRM Practices and Supervisor Behavior
Authors: Hakro Tauqeer Hussain , Gilal Naeem Gul , Banbhan Ashfaque Ali , Gilal Waseem Gul
Published: July 2022

This study investigated the antecedents of employee turnover intentions among insurance employees of Hyderabad, Sindh, Pakistan. A structured questionnaire was used to collect the data based on a seven-point Likert scale from insurance employees of Hyderabad. A structured questionnaire consisting of 18 question items. Data collected by convenience sampling. 100Structured questionnaires were distributed among insurance employees of Hyderabad and based on that data analysis and interpretations were done with the help of SPSS version 22.0 and SEM smart PLS3. SPSS was used to determine descriptive statistics and SEM smart PLS was used to test the hypotheses and model verification.HRM practices were found to be the significant predictors of employee turnover intentions among insurance employees of Hyderabad, Sindh, Pakistan. Whereas supervisor behavior was tested negative with employee turnover intentions. Future Researchers were guided by the suggestions and insights revealed by the current study that HRM practices contribute to decreasing employee turnover intentions. This study also explained the inter-relationship of independent factors(HRM practices and supervisor behavior), which were assumed to be the major predictors of employee turnover intentions. This study particularly focused on employee turnover intentions of insurance employees of Hyderabad and generally insurance employees of the whole province. This study also provided recommendations to insurance companies to reduce employee turnover intentions.
Emotional Intelligence and Project Success in Construction Projects
Authors: Ahmad Tanveer , Rasheed Shahid , Khan Nauroz
Published: July 2022

Project complexity either technical or human in any project leads to a substantial increase in the challenges faced by the project managers. Draw upon the affective event theory, the research intentions to explore the nexus between emotional intelligence (EI) and project success (PS) with a mediating role of employee job satisfaction (JS). Data was collected by distributing 500 questionnaires among the construction sector project workers from which 356 employees responded. Results of the study revealed that EI has a significant influence on PS, whereas JS partially mediates the linkage between EI and PS. Hence, from the results, it is enough evidence to state that project managers (PM) should be well-aware of the concepts pertains to EI so that they can initiate more human cum project-oriented programs to make a project successful in multifaceted project conditions.
PEMANFAATAN TEPUNG BEKATUL TERHADAP SIFAT SENSORI DAN KIMIA PRODUK COOKIES
Authors: Sofianti Nofia , Supriatiningrum Dwi Novri , Prayitno Sutrisno Adi
Published: July 2022

Rice bran is the outer layer of rice that is released during milling and contains nutrients that is fiber, carbohydrates, protein and vitamin B complex which can be used as additional ingredients in making cookies. This study aims to determine the effect of rice bran substitution on the sensory and chemical properties of cookies products. The research design used was a completely randomized design (CRD) with 4 replications, Organoleptic test was analyzed by Friedman test and chemical test was analyzed by ANOVA and followed by LSD test. Organoleptic test results show that there is an effect of rice bran substitution on sensory properties including color, aroma, taste and texture of rice bran cookies, indicating that H0 is rejected and H1 is accepted. The best results were found in substitution (30%) and the lowest was in substitution (50%). The results of chemical test analysis showed that the highest protein content was in the treatment (50%) bran of 8.19 g, the highest carbohydrate content in the treatment (100%) of flour was 78.70 g, the highest level of vitamin B1 showed treatment (50%) of bran flour was 1.35 mg, while in the fiber test the highest value was obtained in the treatment (50%) of bran flour of 11.25 g. The best treatment for rice bran cookies is low carbohydrate value, high in protein, vitamin B1 and fiber.
BLENDED LEARNING SEBAGAI SOLUSI PEMBELAJARAN DI ERA NEW NORMAL
Authors: Ayu Lestari  , Isna Lailatul Mufarohah  , Fenia Taasa Wati  , Ahmad Khoiri
Published: July 2022

Di era new normal seperti sekarang ini, metode pembelajaran blended learning menjadi solusi pembelajaran yang tepat. Metode yang menggabungkan antara sistem pembelajaran tatap muka dan sistem pembelajaran online ini diharapkan mampu memberikan optimalitas dalam proses pembelajaran. Dimana peserta didik yang tidak dapat mengikuti pembelajaran secara tatap muka dapat mengikuti pembelajaran secara online, sehingga peserta didik dapat memperoleh materi pembelajaran yang sama dan diwaktu yang bersamaan pula, disinilah kelebihan daripada metode blended learning. SMP Istiqomah Sambas sebagai salah satu sekolah unggulan di Jawa Tengah juga menerapkan metode pembelajaran Blended Learning sebagai metode pengajaran mereka.  Di SMP Istiqomah Sambas menunjukkan proses pembelajaran berjalan dengan baik berdasarkan hasil pemahaman siswa yang mencapai 75%. Sehingga metode Blended Learnig efektif digunakan untuk proses pembelajaran di era new normal.
OPTIMALISASI PENGGUNAAN MEDSOS BRANDING PRODUK UMKM DI DI DESA KALANGANYA KECAMATAN SEDATI SIDOARJO
Authors: Enny Istanti  , Agus Mahmdi
Published: July 2022

Social media is a media that is born and will continue to develop over time as one of the most popular alternatives for means of communication, interacting, sharing, participating, creating something new that is more impressive and also a means of working without being limited by space and time. . MSMEs are small business activities that can provide great benefits from the economic side. Social media is used by MSME actors to be bolder in promoting their products as a fast, effective and efficient marketing tool. With the existence of MSMEs, it is expected to be able to create jobs, increase income and encourage the realization of national stability. This community service activity is in the form of socialization and training on the development of MSME marketing in Kalanganyar Village through social media
Economic assessment of efficiency to develop the Tastyg spodumene pegmatite deposit in Tyva
Authors: Dabiev D.F.
Published: July 2022

The Republic of Tyva is located in the border zone of the Siberian Federal District, but despite this, the region's nearborder location has little impact on its economic development. By removing its relative transport isolation not only with the cross-border territories, but also with the neighbouring Russian regions, the republic would be able to unlock its potential for economic development, including the use of its natural resources. Extending the Kuragino-Kyzyl railway project to the Mongolian border is one of the main targets in creation of the backbone infrastructure facilities within the West-East international transport corridor of the Republic of Tuva's individual social and economic development programme. In order to assess the viability of developing some of the deposits in Tyva, which are located at the border with Mongolia, a feasibility study was performed to assess the development of the Tastyg spodumene pegmatite deposit. Preliminary calculations show that the capital investments of RUB 4,200 million (as of 2021) in the development of the Tastyg spodumene pegmatite deposit will be recoverable. In addition, the annual budget allocations are estimated to reach RUB 710 million. The social effects of this project include the construction of a motor road and a power transmission line to the remotely located district of Tere-Khol, which is currently one of the hardtoreach areas of the Republic.
History of gold mining in Russia: Lev Brusnitsyn
Authors: Kuznetsov V.B. , Korshunov A.N.
Published: July 2022

The article analyzes the development of gold mining in Russia from a historical perspective. Historical reasons and factors of native and placer gold discovery are investigated and explained. A particular emphasis is placed on Lev Brusnitsyn, the discoverer of gold-bearing sands in Russia, and on industrial development of these sands. The global significance of this discovery is highlighted. The article presents the biography of this historical person, with account of modern historical knowledge, as well as his life assessment by his contemporaries and descendants. During the entire history of gold mining in Russia, about 18 thousand tons of gold have been recovered, three quarters of which being placer gold. It was the result of the hard work of thousands and thousands of unknown miners and mine foremen like Lev Brusnitsyn, who will be discussed in this article. It has taken Russia quite a long time to harness its golden chariot and make a historic leap into the global leaders of gold mining.
The Development of coal deposits in the Tyva Republic: challenges and risks
Authors: Balakina G.F. , Kulikova M.P.
Published: July 2022

Description of the main theme. Before the Republic of Tyva, the modern conditions of development have put forward the challenges of intensifying the development of natural resources to improve living standards and reduce unemployment. Since coal is the main wealth of the interior of Tyva, it is necessary to find ways to involve this resource in economic circulation. Object problems. At present, a coal-mining territory is being formed in Tyva and the volume of coal production is growing dynamically. There are high risks. Purpose of the study. Analysis and systematization of the challenges and risks of a large-scale increase in coal production in Tyva. Basic methods of analysis. Methods of systemic, economic and statistical analysis, classification were used. The research was based on statistical and analytical data for Russia and the Republic of Tuva and internet resources. Research results. The scientific novelty of the study consists of the analysis of the development of coal mining in the regions of the Russian Federation, systematization of risks arising in the formation of coal-industrial territory in Tyva. Natural, anthropogenic, technogenic and socio-economic risks are identified, differing in the source of their occurrence. Ecological risks from anthropogenic and technogenic risks are highlighted. The ways of reducing the possible environmental load are substantiated. Conclusions. Based on the results of the study, it was concluded that in order to reduce the lag in the parameters of socio-economic processes in Tyva, one of the effective ways is the formation of a coal mining area. This implies the creation of an energy-chemical complex for coal processing and the production of a wide range of coal chemistry products, an increase in coal export volumes after the construction of the railway. To eliminate the high risks of this strategic direction of regional development, it is proposed to implement a number of innovative sustainable technology, systematic monitoring of the state of coal mining territories.
KIRILGAN BEŞLİ ÜLKELERDE EKONOMİK ÖZGÜRLÜĞÜN İNSANİ GELİŞMİŞLİK ÜZERİNDEKİ ETKİSİ: PANEL EŞBÜTÜNLEŞME
Authors: İMRE Süreyya
Published: July 2022

Ekonomik özgürlüğün, bir ülkenin kalkınma düzeyi ve refahı üzerindeki etkisinin önemli uyarıcılarından biri olduğu bilinen bir gerçektir. Bu çalışmada ekonomik özgürlüklerin belirlenmesi ve ölçülmesinde kullanılan ekonomik özgürlük endeksinin, insan refahını ölçmeye yarayan insani gelişmişlik endeksi üzerindeki etkisini araştırmak amacıyla Kırılgan Beşli Ülkelere ait 1999-2018 yıllarını kapsayan veriler kullanılmıştır. Elde edilen sonuçlara göre ekonomik özgürlük endeksinde meydana gelen %1’lik artış insani gelişmişlik endeksini Hindistan için %0.54, Brezilya için %0.30, Türkiye için %0.61 arttırmaktadır. Endonezya için ise %0.48 azaltmaktadır. Güney Afrika’da ise ekonomik özgürlük endeksinin insani gelişmişlik endeksi üzerinde hiçbir etkisi tespit edilememiştir. Tüm ülkeler için yorum yapıldığında ise ekonomik özgürlük endeksinde meydana gelen %1’lik artış insani gelişmişlik endeksini %1.84 arttırmaktadır.
The percolation model of formation of the high-modulus nanocomposites polymer/carbon nanotubes
Authors:   Kh.M. Berbekov Kabardino-Balkarian State University”, Kozlov G. V. , Dolbin I. V. ,   Kh.M. Berbekov Kabardino-Balkarian State University”
Published: July 2022

Production of the high-modulus nanocomposites polymer/carbon nanotubes and polymer/graphene at present is actual task and its solution is obviously important for such innovational industry sectors as air-, automobile industry, astronautics a.a. The general theoretical criterions of production of the indicated nanomaterials studied within the frameworks of percolative models of polymer nanocomposites reinforcement. These models assumed, that reinforcement degree or relative modulus of elasticity of polymer nanocomposites is defined by nanofiller structure in polymer matrix of nanocomposites. The structure of nanofiller (more exactly, its aggregates) can be characterized by fractal dimension of these aggregates. A various variants of percolative model of polymer nanocomposites reinforcement allow to taken into account such important for this class of nanomaterials parameters as the level of interfacial adhesion, relative content of interfacial regions (which are in the case of polymer nanocomposites the same reinforcing element of their structure as and actually nanofiller), aggregation degree of nanofiller a.a. Such approach allows to obtain functional interrelation between these characteristics and define conditions, which are necessary of production of high-modulus polymer nanocomposites. It was been found that for this goal achievement is necessary performance of the following conditions: realization of negative values of percolative index. Mathematically this condition is realized in the case, when aggregation degree is smaller, than volume content of nanofiller. Further, the usage of volume content of nanofiller larger than its percolation threshold and achievement of nanoadhesion effect are two following conditions. In the case of the indicated conditions performance percolative model predicts the possibility of production of polymer nanocomposites of the considered classes, which have mechanical characteristics, compared by its value with similar parameters for steel, but essentially smaller by weight.
Influence of hybridization of carbon fibers with aramid and UHMWPE-fibers on the impact properties of hybrid CFRPs
Authors:   Semenov Federal Research Center of Chemical Physics, Russian Academy of Sciences, Korneeva N. V. , Krylov I. K. ,   Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Abdullin I. Sh. ,   Research and production association“Plasma VST”, Kudinov V. V. ,   Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Published: July 2022

The properties and mechanisms of destruction of hybrid composite materials (HCMs) based on flexible and brittle matrices, reinforced with hybrid fibers made of carbon, aramid and ultra-high molecular weight polyethylene (UHMWPE) fibers were investigated by the method of “impact break” (IB) upon low-velosity impact. The composition of the hybrid fiber and the plasticity of the matrix affect the properties and fracture mode of the HCM. It is discovered that the combination of carbon and aramid fibers in a hybrid fiber for reinforcing a flexible matrix (FM) makes it possible to create a material with delayed fracture. It has been shown that upon impact for the destruction of HCM with a flexible matrix, a load twice as large as for specimens with a brittle matrix is required. The highest strength have hybrids, in which, at all stages of loading, up to fracture, there is a joint deformation of the matrix and the reinforcing fiber. The mechanism of deformation and destruction of anisotropic HCMs upon impact has a stepwise character.
Modification of the structural and phase composition and mechanical properties of the Ti – C60 – Ti films implanted by boron ions
Authors:   Belarusian State University, Baran L. V.
Published: July 2022

Changes in the structure, phase composition, and mechanical properties of Ti – C60 – Ti films implanted with B+ ions (E = 80 keV, D = 1 1016 ion/cm2) after annealing in vacuum at temperature 570 K (3 hours) were studied by the methods of atomic force microscopy, X-ray diffraction and nanoindentation. The films were obtained by resistive evaporation in vacuum. Layers of titanium and C60 fullerite were sequentially deposited onto a substrate of oxidized single-crystal silicon. It has been established that during the condensation of the fullerite layer (h = 250 nm) on the underlying titanium layer (h = 120 nm), and then the titanium layer (h = 150 nm) on the fullerite layer, intense diffusion of titanium into the fullerite layer occurs. Implantation of titanium-fullerite-titanium films with boron ions leads to mixing of titanium and fullerite layers, while the size of structural elements increases in comparison with non-implanted films from 40 nm to 80 nm. Auger electron spectroscopy revealed that ion implantation results in an increase in the atomic fraction of oxygen in the films and the formation of a new TixOyC60 phase, which leads to an increase in the nanohardness of the mixed layers. The implanted Ti – C60 – Ti films were annealed in vacuum at T= 570 K for t = 3 h. Thermal annealing results in recrystallization of the fullerite phase and intensive growth of a new TixOyC60 phase with improved mechanical properties.
Obtaining composite 93 W – 4.9 Ni – 2.1 Fe powder with a spherical particle and investigating the possibility of its use in selective laser melting
Authors:   Lobachevsky State University of Nizhny Novgorod, Gryaznov M. Yu. , Samokhin A. V. ,   Baikov Institute of metallurgy and materials science of the Russian Academy of Sciences, Chuvildeev V. N. ,   Lobachevsky State University of Nizhny Novgorod, Fadeev A. A. ,   Baikov Institute of metallurgy and materials science of the Russian Academy of Sciences, Alekseev N. V. ,   Baikov Institute of metallurgy and materials science of the Russian Academy of Sciences, Shotin S. V. ,   Lobachevsky State University of Nizhny Novgorod, Dorofeev A. A. ,   Baikov Institute of metallurgy and materials science of the Russian Academy of Sciences
Published: July 2022

The powder of 93 W – 4.9 Ni – 2.1 Fe (VNZh-93) pseudo-alloy with a spherical particle shape in the size range of 15 – 50 μm with a grain size of 0.5 – 3 μm was obtained using plasma chemical synthesis, granulation and spheroidization technologies. The possibility of using spheroidized powder VNZh-93 in additive 3D-printing is demonstrated. Studies of the physical and mechanical characteristics and microstructure of VNZh-93 test samples made using the selective laser melting technology (SLM) have been carried out. It is shown that the parameters of the SLM significantly affect the formation of the microstructure of test samples. It is possible to form a homogeneous equiaxed microstructure with an average grain size of about 1 micron using optimal SLM modes. It is shown that maximum density and Vickers hardness of VNZh-93 obtained in optimal SLM modes are 16.8 g/cm3 and 480 HV, respectively. These values are not inferior to the values for VNZh-93 samples obtained using traditional liquid-phase sintering technology. At the same time, the main problem of selective laser melting of VNZh-93 powder is the heterogeneity of the bulk samples microstructure and the formation of microcracks and micropores in their structure.
Influence of heat treatment on the properties of antibacterial corrosion resistant steel
Authors:   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences, Kaplan М. А. , Konushkin S. V. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences, Sergienko K. V. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences,   All-Russian Research Institute of Phytopathology (GNU VNIIF), Kartabaeva B. B. ,   All-Russian Research Institute of Phytopathology (GNU VNIIF), Gorbenko А. D. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences,   All-Russian Research Institute of Phytopathology (GNU VNIIF),   MSTU im. N.E.Bauman, Kolmakov А. G. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences, Ivannikov А. Yu. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences, Sevostyanov М. А. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences,   All-Russian Research Institute of Phytopathology (GNU VNIIF)
Published: July 2022

The field of application of corrosion-resistant austenitic steel is wide due to its resistance to corrosion and oxidation, durability, high strength and ductility. Austenitic corrosion-resistant steel is of particular importance for medicine. Medical instruments and products are made from it. However, the environment is very corrosive to metals and can lead to protein adsorption, biofilm formation (attachment of microorganisms/bacteria to the surface of the material), and corrosion or itself become a source of bacterial contamination. Recent studies have shown that the addition of Ag and Ti to corrosion-resistant steels can impart antibacterial properties to them without the need for surface modification. The article is devoted to the study of the structure and mechanical properties of a new antibacterial corrosion-resistant steel. The structure was studied by light optical microscopy and X-ray diffractometry. The mechanical properties were studied by stretching the samples on a tensile testing machine. The effect of homogenizing annealing and ingot rolling on the structure of corrosion-resistant steel is shown. According to the test results, it has been established that heat treatment of steel makes it possible to increase the ductility of steel. After rolling, the plates have a fine-grained structure. Normalization at 900 °C and 1000 °C relieves internal stresses and reduces the proportion of ferrite in the structure.
Synthesis and investigation of physical and chemical properties of nanopowders and ceramics in the La2O3–SrO–Ni(Co,Fe)2O3 system
Authors:   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Kalinina M. V. , Dyuskina D. A. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Khamova T. V. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Efimova L. N. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Shilova O. A. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences
Published: July 2022

By the method of joint crystallization of solutions of nitrate salts highly dispersed powders of the composition: La1 – xSrxNiO3, La1 – xSrxCoO3 and La1 – xSrxFe0,7Ni0,3O3 (x = 0,30; 0,40) were synthesized. They have a specific pore volume of 0.018 – 0.035 cm3/g and a specific surface area of 15 – 31 m2/g. On their basis, ceramic nanomaterials of a given composition with CSR ~ 64 – 70 nm (1300 °С) were obtained. The physical and chemical properties of the obtained ceramics were studied; it was revealed that it is a solid solution with open porosity in the range of 17 – 30 %, high values of the relative density of 94 %. In terms of their physical and chemical properties (open porosity, density, coefficient of thermal expansion), the obtained ceramic materials are promising as solid oxide cathodes for medium-temperature fuel cells.
Investigation of the protective properties of coatings obtained by microarc oxidation in alkaline electrolyte solutions
Authors:   National Center of Space Research and Technology Joint-Stock Company, Ramazanova Zh. M. ,   Kazakh Agrotechnical University named after S. Seifullin,   “NCRT” JSC, Zamalitdinova M. G. ,   National Center of Space Research and Technology Joint-Stock Company,   “NCRT” JSC, Kirgizbayeva K. Zh. ,   L.N. Gumilyov Eurasian National University, Akhmedyanov A. U. ,   L.N. Gumilyov Eurasian National University, Zhakupova A. Y. ,   L.N. Gumilyov Eurasian National University
Published: July 2022

The article presents the results of a study of the corrosion properties of oxide coatings compacted with polymers and without compaction. Oxide coatings were obtained on VT1-0 and VT5 titanium alloys under the influence of fast pulsed actions of the micro-arc oxidation (MAO) process. To form MAO coatings, a pulsed mode of the process was used with an anodic current pulse duration of 250 ± 25 μs; the cathodic current pulse duration of 5 ± 0.5 ms; pause between anodic and cathodic current pulses 250 ± 25 μs; repetition rate of anodic and cathodic pulses 50 ± 0.5 Hz. Alkaline solutions were used as electrolytes. Fluoroplastic and epoxy resin solutions were used to seal the oxide coatings. The obtained MAO coatings have 4.4 – 7.5 % porosity on the VT1-0 alloy and 5.4 – 12.1 % on the VT5 alloy. The average diameter of oxide coating pores varies from 0.1 to 0,5 µm. X-ray phase analysis showed titanium dioxide in anatase and rutile modification in the oxide coatings composition. Tests performed in a 24 % solution of sulfuric acid at 40 and 75°C showed that the coatings on the VT1-0 alloy, both oxide and oxide-polymer, are more corrosion resistant than similar coatings on the VT5 alloy. All types of coatings produced on VT1-0 alloy are corrosion-resistant at a test temperature of 40 °C. Consolidation of MAO coatings with polymeric materials improves corrosion properties.
Highly porous composite hydrogel materials β-Ca3(PO4)2/polyethylene glycol diacrylate
Authors:   Kurnakov Institute of General and Inorganic Chemistry, Evdokimov P. V. , Kiseleva A. K. ,   Lomonosov Moscow State University, Shibaev A. V. ,   Lomonosov Moscow State University, Department of Physics, Filippova O. E. ,   Lomonosov Moscow State University, Department of Physics, Novoseletskaya E. S. ,   Lomonosov Moscow State University, Efimenko A. Yu. ,   Lomonosov Moscow State University, Scherbakov I. M. ,   Lomonosov Moscow State University, Shipunov G. A. ,   Lomonosov Moscow State University, Dubrov V. E. ,   Lomonosov Moscow State University, Putlayev V. I. ,   Lomonosov Moscow State University
Published: July 2022

The possibility of obtaining highly porous composite hydrogel materials for biomedical applications based on tricalcium phosphate in a polyethylene glycol diacrylate matrix, aimed to repair bone defects, was studied. The influence of different contents of inorganic filler particles on the mechanical characteristics of highly porous hydrogel composites β-Ca3(PO4)2/polyethylene glycol diacrylate was studied. The possibility of creating highly porous composite materials with specified elastic properties is demonstrated. The dependence of the viscoelastic properties of the obtained materials on the size of the given porosity is shown. Varying the proportion of tricalcium phosphate in the highly porous hydrogel material makes it possible to control the relative stiffness of the composite.
Carbide-based cermet plasma coatings TiC – Cr3C2 – WC
Authors:   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences, Kalita V.I. , Radyuk A. A. ,   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences, Komlev D. I. ,   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences, Mikhailova A. B. ,   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences, Alpatov A. V. ,   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences, Titov D. D. ,   Baikov Institute of Metallurgy and Materials Sciences of Russian Academy of Sciences
Published: July 2022

Five cermet coatings based on carbides 45TiC – 10Cr3C2 – 5WC with different contents of additional carbon were formed by plasma spraying with local protection: 0; 1.4; 2 and 2.8 %. In four cermets, the matrix was based on Ni – 20Cr. In one cermet, the alloy used was 38.5Co – 32Ni – 21Cr – 8Al – 0.5Y. All matrices were additionally introduced Mo. Powders for spraying were obtained by crushing cakes. In the particles of the obtained powders, carbides are distributed relatively uniformly; in coatings, this is noticeable to a lesser extent. After liquid-phase sintering, WC and Mo are not fixed in cermets; part of the Cr3C2 carbide passes to another structural state. The initial carbides in the cake and coating partially dissolve and, upon solidification and together with matrix elements and additional carbon, form an annular zone around the initial TiC carbide, decreasing its lattice period, X-ray fixes TiMoC2 carbide, the content of which is higher than the content of TiC carbide in the initial mixture. The content of the initial carbides in the coatings, measured by optical microscopy, decreases from 71 vol.% In the powder to 48 vol.% At the minimum plasma power and up to 36 vol.% At the maximum power. The average total TiMoC2 content of carbides in coatings according to x-ray data for four cermets is 76 %, higher than their content in spraying powders, 72 %, due to higher spray hardening rates. The average microhardness for all coatings is 22.01 GPa with an indenter load of 20 gf, which is lower than the average microhardness for all powders, 23.51 GPa. With an indenter load of 200 gf, the average microhardness for all coatings of 15.88 GPa corresponds to the average microhardness for all powders, 15.17 GPa.
Discursive Specificity of Modal and Evaluative Meanings Manifestation in Texts of Regulatory Legal Acts (by the Material of the English and Russian Languages)
Authors: Shashkova Valentina Nikolaevna
Published: July 2022

The aim of the study is to ascertain a stable relationship between modal meanings, which are subject to regular updating in regulatory legal acts as a genre of legal discourse, and the specifics of their functioning. By the material of the Code of Criminal Procedure of the Russian Federation and the Federal Rules of Criminal Procedure of the United States of America, modal and evaluative vocabulary is considered as a discursive marker of the texts of normative legal acts. The scientific novelty lies in identifying the types of modal and evaluative meanings as stable characteristics of normative legal acts. As a result of the study, those evaluative meanings have been identified that are typical of normative legal acts in the field of criminal procedure law: external service necessity, external usual deontic possibility, normative assessments, as well as intellectual assessments. The specificity of the semantic-syntactic compatibility of evaluative lexemes is manifested in the formation of text chains with names of event semantics.
Communicative Aspect of Modified Proverbs Translation from German into Russian
Authors: Shitikova Anzhelika Vladimirovna
Published: July 2022

The aim of the study is to highlight the features of the communicative aspect of translating the German variant and transformed proverbs in the press. The article reveals the difficulties of translating modified proverbs. The scientific novelty of the study lies in the analysis of translating the modified forms of the German proverbs “Alte Liebe rostet nicht”, “Viele Köche verderben den Brei”, “Ohne Fleiß kein Preis” for successful communication. As a result of the study, the difficulties of translating modified proverbs due to the lack of interlingual modified proverb equivalents have been identified, and the variants for the most adequate translation of modified proverbs have been proposed as a way to overcome these difficulties.
Verbalisation of Acoustic Images in P. Pabst’s Novel “Ich sehe das, was ihr nicht seht. Eine blinde Strafverteidigerin geht ihren Weg” / “I See What You Cannot See. Blind Female Criminal Defense Lawyer Goes Her Own Way”
Authors: Ladosha Oksana Mikhailovna
Published: July 2022

The aim of the study is to generalize, in accordance with the semantic groups, the repertoire of the lexical units that nominalize acoustic images in the novel. The scientific novelty lies in the fact that the object of analysis is a written German-language text created by a blind author. For the first time, the object of analysis is the verbalization of auditory images as a means of conceptualizing the reality of people with visual impairments. As a result, it has been proved that the compensatory function of hearing in visual deprivation is reflected in the variety of the lexical means that thematize acoustic images.
Synsemantic Exponents of Category of Cause in the American Political Discourse
Authors: Butenko Tatiana Anatolievna
Published: July 2022

The aim of the study is to identify the synsemantic representatives of cause implemented by candidates for the post of the President and the Vice President of the United States. Despite a large number
of the works dedicated to the means of expressing causal relations, there is no study of causal synsemantic constructions. The scientific novelty lies in determining the correspondence between semantic types
of cause and the synsemantic constructions that implement them in the English language. As a result, it has been revealed that to implement semantic types of cause in the American political television debates, speakers use the following synsemantic constructions: narrowing repetition, modifying repetition, mixed repetition, preceding reference point, question-answer construction, isolated subordinate clause, potentially compound sentences, causal asyndetic adjunction and rhetorical question.
Representation of Theme of Developing New Forms of Social Life in F. I. Panferov’s Book of Essays “In the Early Morning” (1927): By the Example of the Essays “Markel” and “In the Early Morning”
Authors: Kultysheva Olga Mikhailovna , Rashchupkina Olga Stanislavovna
Published: July 2022

The aim of the study is to characterize F. I. Panferov’s works about the village as an artistic world overcoming alienation of everything new by the village in the course of collectivization. The research is carried out basing on the book of his essays “In the Early Morning” (1927). The scientific novelty lies in the fact that F. I. Panferov’s works are considered as a representation of the leading trends in the “collective farm prose” of the 1920-30s; the paper fills a gap in the study of the writer’s little-known essays. As a result, based on the reference to F. I. Panferov’s essays “Markel” and “In the Early Morning”, the authors characterize the image of the peasant Cosmos of the collectivization era that developed in the Soviet literature in the second half of the 1920s, as well as the artistic world expressing “singing and sobbing doxology” of the Soviet village life.
Genre Code of “Terrible Short Story” in I. S. Turgenev’s “Klara Milich”
Authors: Pogadai Elena Vladimirovna
Published: July 2022

The aim of the work is to reveal the hybrid genre nature of Turgenev’s last story. The use of unusual narrative strategies in the recognizable and stable genre structure of the fantasy short story is considered. The subject of the research is shifts in the genre structure of the story, with the help of which the components of the “physiological” essay and the “terrible short story” interfere in the structure of the narrative. The scientific novelty of the study lies in the description of some features of the narrator’s image (the presence of an implicit narrator, the convergence of the hero’s and the narrator’s points of view) and the plot structure of the story. As a result of the study, the hybrid genre nature of Turgenev’s last story has been revealed; the ways of narrative instances interaction in the text have been clarified; the main difference between Turgenev’s story and the structural organization of the “terrible short story” is noted, which consists in the internalization of the text events.
Linguo-Cognitive Representation of Oppositive Concepts RUSSIAN WORLD - CANCEL CULTURE
Authors: Zdanovskaya Lidiya Borisovna
Published: July 2022

The aim of the study is to reveal the specifics of the linguo-cognitive explication of the concepts RUSSIAN WORLD, CANCEL CULTURE. The author analyses the axiological component of the concept RUSSIAN WORLD. The stages of emergence and dynamics of the actualization of the concept CANCEL CULTURE are determined. The scientific novelty of the study lies in the definition of the concepts RUSSIAN WORLD, CANCEL CULTURE as oppositive components-concepts. The author has for the first time identified the stable features that testify to their inclusion in the national cognitive and linguistic worldview. As a result of the study, the polarity of the axiological values transmitted by the representatives of the concepts RUSSIAN WORLD - CANCEL CULTURE participating in the formation of the Russian and Anglo-American conceptual spheres has been determined.
Structure and Genre-Thematic Features of R. Gamzatov’s Poetic Collection “In the Midday Heat in the Valley of Dagestan”
Authors: Nabigulaeva Marjanat Nabigulaena
Published: July 2022

The aim of the study is to reveal the structural and compositional construction as well as the genre and thematic content of R. Gamzatov’s poetry collection “In the Midday Heat in the Valley of Dagestan”. The article holistically and broadly analyses one of the interesting and important collections in R. Gamzatov’s creative work relating to a complex, but at the same time fruitful stage of his creative activity - the end of the XX century. The scientific novelty lies in the fact that R. Gamzatov’s book is introduced into scientific circulation for the first time and becomes an object of the detailed study. As a result, it has been proved that the collection consists of political, civil and love lyrics, as well as satirical poems by R. Gamzatov, which reflect socio-economic and political transformations in the country, in particular the processes of perestroika and its development.