bluuebunny/crossref_metadata_2025 huggingface dataset:
Abreviaturas en el cementerio militar alemán de Yuste: tipología y traducción al español
Authors: Corbacho Sánchez Alfonso
Published: December 2024

El cementerio militar alemán de Cuacos de Yuste, ubicado al norte de Cáceres, es un monumento a los soldados alemanes que murieron en España durante la Primera y la Segunda Guerra Mundial. Este camposanto cuenta con distintas abreviaturas en las cruces de sus tumbas, que proporcionan información sobre las unidades militares y los rangos de los soldados fallecidos. En esta línea, el objetivo de este estudio es presentar un breve marco teórico de este fenómeno lingüístico junto a las abreviaturas y su traducción al español. Desde un punto de vista formal, el trabajo muestra que el alemán distingue más tipos y posee más términos para designar el fenómeno lingüístico indicado. Sin embargo, en ocasiones, resulta un tanto complicado diferenciar entre acrónimos, siglas y otros tipos de abreviaciones, dado que no existe una línea divisoria precisa que delimite la parcela que ocupa cada uno de estos términos.
Análisis acústico-digital de la entonación del español hablado por anglófonos
Authors: Sarymsakova Albina , Martin Rodilla Patricia
Published: December 2024

Presentamos una contribución a la adquisición de la entonación del español como segunda lengua para hablantes nativos de inglés. Dicha aportación fue realizada con el Plugin para el Análisis Fonético-Fonológico en español (PAFe), una herramienta de software para el análisis comparativo instantáneo de la entonación de hablantes nativos y no nativos. En nuestro estudio empleamos la metodología del Análisis Melódico de Habla y el algoritmo intersilábico de PAFe para identificar qué elementos entonativos de los aprendientes ingleses del español –masculinos y femeninos– presentan más desviaciones tonales. Nuestros resultados indican que las alumnas inglesas presentan más desviaciones en la inflexión final, mientras que los alumnos en el cuerpo del contorno entonativo. Dichos contrastes podrían dificultar la adquisición de la competencia fonético-fonológica en español para los estudiantes ingleses. El origen de estas dificultades se debe a que en los enunciados declarativos los hablantes ingleses pueden trasferir ciertos rasgos melódicos de su L1.
Estudo dos aspectos cinéticos e morfológicos durante recristalizaçao da liga de alumínio AA 8011
Authors: Pacheco Rocha Lima Emmanuel , Sanguinetti Ferreira Ricardo Artur , Freitas de Quadros Ney , Prasad Yadava Yogendra
Published: December 2024

A liga de alumínio AA 8011 foi recozida em temperaturas e tempos variados e, em seguida, submetida a ensaios mecânicos para a determinação da cinética de recristalização. Os resultados mostraram que a cinética pode ser descrita pelo modelo proposto por J-M-A e as modificações microestruturais que ocorrem, excluindo-se a recristalização, são decorrentes da decomposição spinodal e das transformações de fase por nucleação e crescimento, influenciando a  plasticidade do material.
Encruza: metafísica yorùbá para uma epistemologia da dança negro-brasileira
Authors: Silva Maicom Souza e
Published: December 2024

Este artigo pesquisa as possibilidades de se pensar a estética de uma dança negro-brasileira, a partir das filosofias afrodiaspóricas e das epistemologias do mito, corpo e ancestralidade, um trajeto rumo à cosmopercepção de processos cênicos na espetacularidade da arte negra – estudo de caso ancorado na montagem do espetáculo de dança ENCRUZA. Apresentamos, dessa maneira, imagens, proposições e registros dos possíveis percursos do panteão afrodiaspórico adotados no processo coreográfico. Reflexões entre corpo, vida, espetacularidade e a metafísica yorùbá que reverberam nas proposições de redutos cênico-ontológicos que colaboram na construção gestual do artista.
Narrativas contra-hegemônicas: das conferências-concerto às peças-palestra
Authors: Gomes Marcos Nogueira
Published: December 2024

O artigo retoma as conferências-concerto realizadas pelo movimento abolicionista, em sessões que urdiam discursos políticos, teatro, música e a entrega de cartas de alforria. Organizadas para arrecadar dinheiro para a libertação de escravizados, as matinês mobilizavam milhares de pessoas e refletiam uma intersecção entre política e arte no fim do século XIX. O estudo aproxima esse modelo das atuais peças-palestra, em que questões políticas são postas em cena a partir do corpo e do real. Para tanto, são convocadas dramaturgias de dois autores contemporâneos, Rafael Cristiano e Clayton Nascimento, que reelaboram o formato conferência em seus trabalhos, a partir de uma perspectiva afrocentrada.
Genetic dissimilarity and agronomic performance of mutant and recombinant white oat progenies
Authors: Roza João Dalla , Carvalho Ivan Ricardo , Pradebon Leonardo Cesar , Loro Murilo Vieira , Sangiovo Jaqueline Piesanti , Bruisma Gabriel Mathias Weimer , Silva José Antonio Gozalez da
Published: December 2024

White oat (Avena sativa L.) is the winter cereal with the highest nutritional quality, offering multifunctional characteristics due to its benefits to human health, animal nutrition and soil cover. In this way, this crop is highly valued in society. The aim of this study were to evaluate agronomic performance and verify whether there is genetic variability in recombinant and mutant segregating progenies of white oat. The study was conducted at Escola Fazenda UNIJUI (IRDeR), located in the municipality of Augusto Pestana, in the state of Rio Grande do Sul, Brazil. The experimental design used followed an augmented block with interspersed controls. A total of 460 white oat progenies were sown and the intercrop control was represented by the cultivar URS Taura, arranged in three replications. The collected data were subjected to descriptive analysis to identify the number of informative progenies and the maximum, minimum, and average values for the measured variables. Frequency distribution graphs of characters with continuous distribution were generated, stratified by mutant and recombinant progenies. Based on the data obtained, a Bayesian approach was used with generalized mixed models through Monte Carlo and Markov Chains (MCMC). With this information, the genetic (VCV) and phenotypic variance components were estimated with significance based on the 5% probability by χ² (pMCMC). Afterwards, Euclidean distances were calculated and the distance dendrogram was carried out using the UPGMA clustering algorithm. Pearson's linear correlation coefficients were calculated between pairs of variables, with significance verified by the t test at 5% probability. The mutant progenies have greater tillering capacity, while the recombinant progenies have greater tolerance to diseases and lower natural grain threshing. There is a clear genetic variability between recombinant and mutant progenies for the evaluated characters.
Doses de potássio na cultura do crambe
Authors: Santos Vanessa dos , Andrade Vinicius Gabriel , Fim Wesley Luis Antonio , Gaion Lucas Aparecido
Published: December 2024

O crambe (Crambe abyssinica), pertencente à família Brassicaceae, se destaca pelo seu potencial agrícola. Contudo, pouco se sabe sobre as exigências de potássio da cultura. Por isso, o objetivo do presente trabalho foi avaliar o efeito de doses de potássio (K2O) sobre o desenvolvimento e produção das plantas de crambe. Para tanto, foi instalado experimento em casa de vegetação no município de Marília-SP no ano de 2023, para verificar as respostas a diferentes doses de K2O. Empregou-se o delineamento inteiramente casualizado, com quatro tratamentos, constituídos pelas doses de K2O (0; 50; 100 e 200 kg ha-1 K2O), e cinco repetições, totalizando 20 unidades experimentais. As unidades experimentais foram constituídas por vasos de 3,5 L preenchidos com solo de barranco. Enquanto a dose de 50 kg ha-1 K2O foi toda aplicada no momento da semeadura, as doses de 100 e 200 kg ha-1 K2O foram divididas entre a adubação de plantio (50 Kg ha-1) e o restante em cobertura (30 dias após a semeadura) para minimizar a salinização do solo. Utilizou-se como fonte de K2O o fertilizante Aspire. Além disso, na semeadura, utilizou-se o formulado NPK 10-46-00 + 9% S, aplicando-se, respectivamente, 22, 100 e 19,8 kg ha-1 de N, P2O5 e S. Com 109 dias após a semeadura (DAS) foram avaliadas a massa verde de folhas e o teor de K nas folhas e com 122 DAS, as plantas no estádio de maturidade, foram avaliadas a massa seca das plantas e a produtividade. A utilização das diferentes doses de K2O não causou efeito significativo nos parâmetros de crescimento das plantas de crambe. Por outro lado, os dados de produtividade apresentaram resposta linear crescente em função das doses de K2O. Esses resultados demonstram que apesar da sua rusticidade, plantas de crambe apresentam capacidade de respostas à adubação potássica.
Impact and prospects of reproductive biotechnologies on swine production in South America
Authors: Meléndez Keyro Alberto , Ramos Victor Alberto
Published: December 2024

In the evaluation of reproductive biotechnologies in pigs in South America, 72 key articles were selected through a comprehensive literature review and a sampling formula was used to ensure representativeness. Data collected from databases such as Scopus and Web of Science, assessed with a Likert scale and a reliability of 70.1% according to Cronbach's Alpha, reveal that artificial insemination (AI) is the most widely adopted technique, with more than 90% of commercial farms using it. In contrast, embryo transfer (ET) and in vitro fertilization (IVF) show limited adoption, with only 10% of farms applying them due to high costs and low efficiency. Multiple correspondence analysis (MCA) indicates that 55% of publications focus on AI and ET, while only 25% address IVF. The perception of information quality shows that 70% consider articles on AI to be clear, compared to only 40% for IVF. In conclusion, while AI remains prevalent and effective, adoption of ET and IVF faces significant barriers, suggesting an urgent need to improve the accessibility and efficiency of these advanced technologies and strengthen research in less-covered areas.
Produção de metano entérico estimado a partir dos ácidos graxos voláteis do fluido ruminal de vacas leiteiras suplementadas com Lithothamnium Calcareum
Authors: Savela Magna Fabrícia Brasil , Londero Uriel Secco , Vieira Laura Valadão , Pino Francisco Augusto Burkert Del , Corrêa Marcio Nunes
Published: December 2024

O objetivo do estudo foi estimar a produção de metano (CH4) a partir das proporções de ácidos graxos voláteis (AGV) no fluido ruminal e determinar a sua relação com o consumo de matéria seca (CMS) em vacas leiteiras suplementadas com Lithothamnium calcareum. Seis vacas lactantes multíparas da raça Holandesa, foram distribuídas em dois grupos experimentais, grupo controle (CON; n=3) suplementada com 1,1% de MS de bicarbonato de sódio; e grupo Lithothamnium calcareum (LITHO; n=3), com 0,5% da MS de Lithothamnium calcareum. Coletas de líquido ruminal foram realizadas uma vez por semana para avaliação de pH e AGV. Diariamente foram registrados o CMS dos animais. A produção de CH4 foi estimada através de equações baseadas nas proporções de AGV ruminais. Não houve diferença entre o CMS (kg/dia), concentrações de AGV e relação acetato/propionato entre os grupos (P>0,05). O rendimento de metano (g CH4/kg CMS) não teve diferença (P>0,05) entre os grupos nos modelos de equação testados. Não houve uma correlação satisfatória entre o CMS e o rendimento de CH4 para animais do o grupo LITHO e CON. Lithothamnium calcareum como aditivo alimentar não foi capaz de reduzir a produção de CH4, estimada a partir equações baseadas nas proporções de AGV ruminais.
Lay Judges in Common Courts
Authors: Gwizdak Jarosław
Published: December 2024

Lay judges in Poland, who play a crucial role in enhancing civic participation in the judiciary, have seen their role marginalized over time due to systemic changes and professional judges’ attitudes. Lay-judges do not feel adequately appreciated, do not see their function as a source of pride. Despite being undervalued and facing dwindling interest from citizens, revitalizing their participation through legislative reforms and a fresh narrative could strengthen public trust and legitimacy in the justice system.
Haşmet Zeybek'in Irgat Adlı Oyununa Toplumcu Gerçekçi Bir Yaklaşım
Authors: Toksöz Sedat
Published: December 2024

Haşmet Zeybek, toplumcu gerçekçi bir yazar olarak çeşitli eserler kaleme almıştır. Bu makalede Haşmet Zeybek’in Irgat adlı iki bölümden oluşan tiyatro eseri incelenmiştir. Bilindiği üzere toplumcu gerçekçi düşünce edebî eserin alt ve üst yapıdan oluştuğunu belirtir. Toplumla yazarın; yazarla da edebî eserin birbirinden ayrı düşünülemez olduğunu ifade etmektedir. Altyapının bir diğer ifadeyle toplumsal refahın, ekonominin yetersiz olduğu toplumlarda üstyapının yani eğitimin, sosyal ve kültürel hayatın tam anlamıyla başarıya ulaşamayacağı; çünkü yazarın sanat yaratımı meşgalesinde aklının altyapıda kalacağı düşünülür. Dolayısıyla bu bilgiler ışığında Haşmet Zeybek’in Irgat adlı tiyatro eseri, toplumcu gerçekçi düşüncenin üzerinde durduğu altyapı kavramı özelinde incelenmiştir. Bu inceleme sonucunda ekonomik olumsuzlukların ve yaşam gailesinin bireylerin hem zihinsel hem de bedensel yapılarına zarar verdiği tespit edilmiştir. Ayrıca eserde bireylerin sadece emek bakımından değil aynı zamanda sevgi, dinî inanç ve bilinç bakımından da sömürüldüğü görülmüştür. Bu düzenin getirmiş olduğu aksaklıklar ve haksızlıklar etrafında makale toplumcu gerçekçi bir bakış açısıyla sonuca bağlanmaya çalışılmıştır.
Gök Türklerde Doğa Kültleri
Authors: Erkoç Hayrettin İhsan
Published: December 2024

Türk halklarının eski inançları incelendiğinde, bu inançlarda en önemli yere sahip olan kutsal varlığın Teŋri (Gök Tanrı) olduğu görülmektedir. Ancak, eski Türk inançlarında Teŋri’nin yanı sıra diğer pek çok kült de var olmuştur. Bugüne kadar eski Türk inançları ve Gök Türklerde görülen kültler konusunda pek çok çalışma yapılmıştır. Ne var ki, özellikle Gök Türklerdeki inançlar hakkında yapılan çalışmalarda, tarihî kaynaklarda bulunan bilgilerin kullanılıp değerlendirilmesi konusunda bazı eksiklikler bulunmaktadır. Bu çalışmada ise Gök Türk, Çin ve Bizans kaynaklarındaki kayıtlardan yararlanılarak Gök Türklerdeki doğa kültleri incelenmiş, modern araştırmalar gözden geçirilip farklı görüşler birbirleriyle karşılaştırılmış, ayrıca bu inançların daha iyi anlaşılabilmesi için Gök Türklerin dışındaki bazı topluluklarla da karşılaştırmalar yapılmıştır. Varılan sonuca göre Gök Türkler, Teŋri’nin yanı sıra ona yardımcı olan, yine Teŋri gibi koruyucu ve cezalandırıcı vasıfları olduğu düşünülen çeşitli tanrılar ile ruhlara inanıp saygı göstermişlerdir. Bu varlıkların Teŋri’den ayrılan en önemli özellikleri ise, yaratıcı güçlerinin varlığına inanılmamış olmasıdır. Gök Türklerde bu kültler arasında Umay, yer, su, dağ, ateş, güneş, ay, yaz, kış ve savaş bulunmaktadır. Görüldüğü kadarıyla yer, su ve dağ tanrıları birbirleriyle çok yakından ilişkili olarak düşünülmüştür ki bunlar genellikle Kutsal Yer-Su Ruhları (Iduḳ Yir Sub) adı altında toplanmıştır.
Evlat ve Köle Alım Satım Belgelerine Göre Eski Uygurlarda Kölelik Anlayışı
Authors: Güler Mehmet
Published: December 2024

Kölelik, insan iradesinin başkası tarafından sahiplenilip kullanılmasıdır. Bu durum insan topluluklarının ve sosyal hayatın bulunduğu her coğrafyada son yüzyıla kadar yasal bir olgu ve durum olarak varlığını sürdürmüştür. Ekonomik etkinlikler ve çeşitli siyasi oluşumlar; köle edinme, köleleri kullanma, onları alıp satma uygulamalarını destekleyici yönde gelişme göstermiştir. Daha çok batı toplumları ile özdeşleştirilen kölelik anlayışı, doğudaki toplumlarda da bir şekilde vardır. Türklerde de ilk Türk devletlerinden başlayarak sosyal yaşamın bir gereği ve sonucu olarak kölelik kurumuna rastlanmaktadır. Savaşlarda tutsak edilen kişiler, savaş sonucu ele geçirilen düşman tarafına ait kadın ve çocuklar, parçalanmış ailelerin çocukları, ailesi tarafından bakılamayıp başkasına köle ya da hizmetçi olarak satılan çocuklar Asya Türk devletlerinde kölelik anlayışının tezahürleri olarak karşımıza çıkmaktadır. Türk tarihinin yazılı kaynaklarında köleliğin varlığını örneklendiren ilk belgeler, Uygurlar devrine aittir. Uygurlar devrinde köle alım satımının yasal bir çerçeveye kavuşturulduğu gözlenmektedir. Bu çalışmada Nobuo Yamada tarafından EmO1 koduyla etiketlenen köle edinme belgesi ve diğer köle satış belgelerinden hareketle Eski Türk toplumlarında da görülen kölelik anlayışının bir çerçevesini çizmek amaçlanmıştır.
Roman ve Propaganda: Moralızade Vassaf Kadri’nin Ölüm Habercileri Romanında İdeolojik İnşa
Authors: Balaban Fatma
Published: December 2024

Sanatçı, yaşadığı dönemin ve toplumun aynası olarak tanımlanır. Moralızade Vassaf Kadri, II. Abdülhamid’in ruhsal bunalımı çerçevesinde içinde yaşadığı toplumun sıkıntılarını, savaşın getirdiği olumsuz yönleri ve savaş sonrası yaşanılan acıları romanında konu olarak işlemiştir. Sultan Abdülhamid'in saltanatının son günlerine kadar getirdiği; 93 Harbi, Balkan Harbi ve harbin hemen sonrasında (1914) kaleme aldığı romanı Ölüm Habercileri Kızıl Sultan, daha ziyade Abdülhamid'in güvensizliği, kişilik bunalımı üzerinden kaleme alınmıştır. Ölüm Habercileri başlığı ile II. Abdülhamid'i tahttan indirmeye çalışanları kasteden eserde, ittihatçılığa göndermeler yapılır. Abdülhamid'in komiteyi öğrenme çabaları ve Ölüm Habercileri Komitesi’nin Abdülhamid'i tahttan indirme mücadelesi arasında sıkışan, başta Balkan ahalisi olmak üzere Osmanlı yurdunun fakir ve ezilmiş halkının içler acısı hâli eserin odak noktasıdır. Bu çalışma, Meşrutiyet sonrası ortaya çıkan, geçmişin sorgulanması ve yargılanması yöneliminin bir başka örneği olan, Moralızade Vassaf Kadri’nin Ölüm Habercileri Kızıl Sultan adlı eserinde, yazarın tarafının belirlenmesi ve bu bağlamda, keskin hatlarla tanımlanan kişilerin ideolojik inşa çerçevesinde incelenmesi üzerinedir. Eserin tarihi ve ideolojik bakışı içerisinde dönemin yöneticilerinin tutumları ve bunun halk nezdindeki karşılığı metin analizi yöntemi ile okunmaya çalışılmıştır. Eserin Abdülhamid karşıtlığı ideolojisinin propagandası doğrultusunda kurgulandığı görülür. Bu yönüyle ideolojik bir inşa aracı olarak kaleme alındığı anlaşılmaktadır.
Changes in Quality of Alimentation, Anthropometric Measurements, Emotional and Appetite Status of Bariatric Surgery Patients: A Retrospective Cohort Study
Authors: Özenir Çiler , Erdem Nihal Zekiye , Kaçar Mihrican , Öncel Sevgi Yurt
Published: December 2024

Introduction: Laparoscopic adjustable gastric band (LAGB) operation is one of the bariatric surgery methods used to treat extreme obesity.
Objective: This study aimed to evaluate the changes in food tolerance, quality of alimentation, anthropometric measurements, and emotional and appetite status following LAGB.
Materials and methods: A retrospective cohort study was conducted with 98 patients, 1 year had passed since LAGB. In this study, no sample selection method was used; all patients who met the inclusion criteria and volunteered participated. The questionnaire form included questions to determine the patients’ demographic information, anthropometric measurements, changing food consumption, pre- and post-operative meal consumption, appetite and emotional status. Quality of Alimentation (QA) reflects patients’ post-operative dietary satisfaction and tolerance. The QA Form was used to evaluate post-operative food tolerance.
Results: The average age was 38.61±9.82 years, and the mean QA score was 15.59±4.81. The patients lost an average of 30.80±17.76 kg of body weight from pre-operative to post-operative 1st year, and the percentage of patients’ excessive body weight loss was found to be 54.37±26.42. It was determined that the foods that were most difficult to consume after the operation were red meat, white meat, bread, rice, pasta, and salad, respectively.
Conclusions: This study uniquely evaluates food tolerance using the QA Form, offering insights into post-operative dietary challenges. LAGB effectively reduces appetite, promotes weight loss, and has a positive impact on patients’ emotional health.
LOW TEMPERATURE TECHNOLOGY FOR SYNTHESIS OF POLYAMIDE-6 AND ITS PROPERTIES
Authors: Barannikov Mikhail V.
Published: December 2024

To obtain polymer composite materials, it is first necessary to focus on the physical and chemical properties of polymers, which are the basis for their production. One of the popular polymers for the production of products for industrial and everyday use in Russia and in the world is polyamide-6. The technology for producing this polymer by low-temperature hydrolytic polymerization of caprolactam is being developed and improved. Polyamide-6 prepolymer was obtained used a two-stage synthesis of caprolactam using water as a catalyst with a sequential decrease in temperature. To obtain a product with low viscosity, the resulting prepolymer is prepared for processing using a combined demonomerization and drying process in order to reduce the content of the monomer. To obtain a product with high viscosity and molecular weight, the processes of solid-phase polyamidation and combined demonomerization and drying were carried out sequentially. Optimal technological parameters were selected for each stage of the process. The main physicochemical parameters of the resulting product have been established: the content of caprolactam and low-molecular compounds, relative viscosity, molecular weight. The influence of the technological features of the developed technology on the final product properties is shown. The developed technological parameters make it possible, by incorporating the monomer and its oligomers into the polymer macromolecule, to increase the yield of the product, as well as the corresponding charac-teristics of the granulate. The final product has been proven to meet the requirements for polyamide-6, ready for processing into polymer composite materials. Low-viscosity polyamide-6 is used to produce threads and fibers, and high-viscosity polyamide is used to produce structural products and plastics.
For citation:
Barannikov M.V. Low temperature technology for synthesis of polyamide-6 and its properties. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 1. P. 72-76. DOI: 10.6060/ivkkt.20256801.7091.
OBTAINING A COMPOSITE MATERIAL "SPHERICAL GRAPHITE – SnO2»
Authors: Bratkov Ilya V. , Ivanov Andrey D. , Kolchin Artyom D. , Savitsky Igor A.
Published: December 2024

In this article, a study was conducted on the process of obtaining a composite material “spherical graphite – tin oxide”, with the aim of its further application as an anode material for lithium-ion batteries. The composite was obtained by impregnating spherical graphite with an aqueous alcohol solution of SnCl4 followed by thermal destruction. The influence of the parameters of the specific consumption of tin chloride on the physico-chemical and electrochemical properties of the composite is studied. The inclusion of tin dioxide in the composition of the obtained samples was confirmed by methods of X-ray phase analysis and X-ray energy dispersion spectroscopy. Thermogravimetric method has established that an increase in the specific consumption of SnCl4 from 1.7 to 3.5 g per gram of spherical graphite leads to an increase in the content of SnO2 in the sample from 2.6 to 6.9 wt%. The degree of conversion of tin chloride into oxide decreased from 52 to 33%. The uniformity of the resulting tin dioxide cover on spherical graphite particles has been studied by constructing energy dispersion maps of the distribution of elements. This method confirms the formation of a composite material with a core-shell structure, where spherical graphite particles serve as the core and SnO2 nanoparticles serve as the shell. A uniform coating was observed, and there were no separate oxide particles loose on graphite. X-ray diffraction analysis of composites showed that at a specific consumption of SnCl4 from 3.5 g/g, an increase in the size of coherent scattering regions for tin oxide particles is observed, which indicates an increase in their size. In addition, modification of spherical graphite with tin oxide leads to an increase in the specific surface area from 8.4 to 13.6 m2/g, which can lead to a decrease in the original Coulomb efficiency of the composite material. Electrochemical tests of the lithium-ion battery prototype have shown that when the SnO2 content in the composite is 6.9%, there is an increase in the specific capacity of the anode material by 111 mA∙h/g.
For citation:
Bratkov I.V., Ivanov A.D., Kolchin A.D., Savitskiy I.A. Obtaining a composite material "spherical graphite – SnO2». ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 1. P. 55-62. DOI: 10.6060/ivkkt.20256801.7099.
SYNTHESIS OF COPOLYMERS OF STEARYL METHACRYLATE WITH N-VINYLPYRROLIDONE AND THEIR USE AS ADDITIVES FOR DIESEL FUEL
Authors: Pavlovskaya Marina V. , Dolganov Evgeniy D. , Belikov Aleksey A. , Grishin Dmitry F.
Published: December 2024

The features of radical polymerization of stearyl methacrylate and its copolymerization with N-vinylpyrrolidone by the reversible chain transfer (RAFT) mechanism using 2-cyano-2-propyldodecyltritiocarbonate as a RAFT agent were studied. It has been established that the polymerization process proceeds in a controlled manner without a gel effect up to high conversions and is characterized by a linear increase in the molecular weight of homo- and copolymers with increasing conversion. The molecular weight distribution curves are unimodal; the mode of the synthesized samples consistently shifts to the high-molecular region with increasing conversion. The dispersion of the synthesized images has values of 1.4-1.6. The experimentally determined values of the number-average molecular weight of polymer samples correlate well with the theoretically calculated values. The composition of the copolymers was determined using nuclear magnetic resonance spectroscopy. The dependences of the composition of the copolymer on the composition of the monomer mixture were studied and, based on them, the relative activities of stearyl methacrylate and N-vinylpyrrolidone during their copolymerization in the presence of a RAFT agent were determined using the Fayneman-Ross and Kelen-Tudes methods. It was revealed that the product of the relative activities of the monomers is significantly less than unity, which indicates the formation of a statistical copolymer with an azeotropy point. The resulting polymer samples were tested as depressant additives for hydrotreated diesel fuel. It has been shown that the developed polymer additives are capable of having a significant impact on the low-temperature properties and characteristics of hydrotreated diesel fuel, while simultaneously lowering its pour point, cloud point and ultimate filterability. At the same time, copolymers of stearyl methacrylate with N-vinylpyrrolidone are more effective as depressants than homopolymers of stearyl methacrylate. It has been established that the synthesized copolymers have the most significant effect on the pour point of diesel fuel, in which case the depressant effect exceeds 20 degrees. In terms of their effectiveness in influencing the low-temperature characteristics of diesel fuel, the proposed additives are not inferior to imported analogues currently used in industry and may be of interest in terms of practical use and application.
For citation:
Pavlovskaya M.V., Dolganov E.D., Belikov A.A., Grishin D.F. Synthesis of copolymers of stearyl methacrylate with N-vinylpyrrolidone and their use as additives for diesel fuel. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 1. P. 63-71. DOI: 10.6060/ivkkt.20256801.7110.
ASSESSMENT OF THE POSSIBILITY OF USING PEROXODISULURIC ACID IN THE TREATMENT PROCESSES OF WASTEWATER CONTAINING SYNTHETIC DYES
Authors: Liubushkin Timofei G. , Kuzin Evgenii N. , Ivantsova Natalya A. , Konkova Tatyana V.
Published: December 2024

Many works have been devoted to the issues of wastewater treatment from organic ecotoxicants, while the search for alternative reagents and technologies for their destruction due to the limitations and disadvantages of classical methods remains relevant. Due to the active growth of production and consumption rates and the strong negative impact on the environment, pollution of natural water sources with wastewater containing synthetic dyes is an extremely serious environmental problem. As an alternative to traditional methods of ozonation and chlorination, the article considers the possibility of using peroxodisulfuric acid (H2S2O8) as a promising oxidant of synthetic dyes in wastewater using the example of model pollutants: fuchsin, methylene blue, bromocresol green, methyl red and rhodamine C. It was found that in pure form peroxodisulfuric acid oxidizes no more than 40% by weight of the dye, but the introduction of iron (II) compounds as catalyst into the system increases the degree of destruction by up to 90%. The optimal doses of the oxidant and the catalyst were determined, and the rates of destruction were calculated. It is noted that an increase in the dose of the oxidant and catalyst above the optimal one reduces the efficiency of destruction. The combined use of iron compounds and peroxodisulfuric acid makes it possible to accelerate the destruction of methyl red by 5 times, methylene blue by 10 times, rhodamine C by 18 times, bromocresol green by 58 times and fuchsin by 3 times compared with individual H2S2O8. The data obtained indicate the high prospects of using the H2S2O8-Fe(II) system in the processes of oxidation of organic dyes in wastewater.
For citation:
Liubushkin T.G., Kuzin E.N., Ivantsova N.A., Konkova T.V. Assessment of the possibility of using peroxodisuluric acid in the treatment processes of wastewater containing synthetic dyes. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 1. P. 120-126. DOI: 10.6060/ivkkt.20256801.7124.
2 INFLUENCE OF Fe:W RATIO IN TETRABORATE ELECTROLYTE ON CHARACTERISTICS OF OXIDE LAYERS FORMED ON TITANIUM BY PLASMA ELECTROLYTIC OXIDATION
Authors: Budnikova Yulia B. , Vasilyeva Marina S. , Lukiyanchuk Irina V.
Published: December 2024

The effect of the concentration of sodium tungstate in a tetraborate electrolyte containing chelate complexes of Fe (III) with EDTA on the composition, optical and photocatalytic properties of Ti/TiO2-WO3-Fe2(WO4)3 film composites formed by a one-stage method of plasma-electrolytic oxidation was studied. The research showed that sodium tungstate additives contribute to the production of high-quality and continuous PEO coatings. According to X-ray Diffraction Analysis (XRD), all formed coatings contain tungsten oxide WO3 in the cubic modification and Fe2(WO4)3 in the monoclinic modification. A change in the Fe:W molar ratio from 1:1 to 1:3 in the electrolyte due to an increase in the concentration of Na2WO4 leads to an increase in the thickness from 24 to 33 μm, a decrease in the iron concentration from 10 to 4 at.%, but has almost no effect on the tungsten concentration in the oxide layers. According to diffusion reflectance spectra, coatings without iron (TiO2-WO3) absorb only UV light. The presence of iron in coatings leads to a red shift of the spectrum, indicating their ability to absorb visible radiation. This is confirmed by the values of the band gap Eg determined by the Tauc method for direct allowed transitions. As the iron content in the samples decreases, Eg increases from 2.01 to 2.68 eV. For samples obtained in a tetraborate-tungstate electrolyte without iron complexes, Eg=3.0 eV. All obtained composites exhibit almost the same photocatalytic activity in the degradation of methyl orange ((10 mg/L, pH 6.8) in the presence of hydrogen peroxide (C(H2O2) = 10 mmol/L) under UV and visible light.
For citation:
Budnikova Yu.B., Vasilyeva M.S., Lukiyanchuk I.V. 2 influence of Fe:W ratio in tetraborate electrolyte on characteristics of oxide layers formed on titanium by plasma electrolytic oxidation. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2025. V. 68. N 1. P. 79-87. DOI: 10.6060/ivkkt.20256802.7072.
Emerging Technological Trends and Business Process Management: Preparing the Philippines for the Future
Authors: Cimene Dr. Francis Thaise A.
Published: December 2024

The Philippine IT-BPM sector plays a vital role in driving economic growth and global competitiveness. This mini-report highlights how emerging technologies such as cloud computing, IoT, and big data analytics are transforming traditional business processes. Grounded in endogenous growth theory, the report emphasizes the impact of innovation and human capital on productivity. Policy recommendations are provided to bolster the nation’s position as a leading outsourcing hub and prepare for future technological advancements.
Más allá del síndrome metabólico
Authors: Perez Cañizalez Marco Antonio
Published: December 2024

A partir de los primeros hallazgos de los estudios poblacionales de Framingham, la comunidad médica ha puesto gran interés en los factores de riesgo de enfermedades cardiovasculares y ha evidenciado la coexistencia de estos padecimientos. Oficialmente, el síndrome metabólico surgió en 1988, cuando Gerald Reaven llamó “síndrome X” a la agrupación de resistencia a la insulina-hiperinsulinemia (disglucemia), dislipidemia e hipertensión, “nueva” entidad nosológica que en 1999 la Organización Mundial de la Salud denominó “síndrome metabólico”. De hecho, la agrupación de estos factores de riesgo cardiovascular se reconoció desde épocas antiguas y a lo largo de la historia ha recibido diferentes nombres, como “síndrome hipertensión-hiperglucemia-hiperuricemia”, “síndrome plurimetabólico”, “obesidad diabetógena”, etc. Múltiples asociaciones internacionales han buscado establecer definiciones operacionales, modificando la importancia o los valores de corte de determinadas variables. Este artículo describe los antecedentes históricos y los avances científicos que permitieron llegar a compilar el síndrome, así como las diferentes definiciones operativas y variables que se han utilizado para diagnosticarlo. Hoy en día se enfoca en su prevención antes que el tratamiento y resaltar el control de los factores de riesgo con diferentes abordajes interdisciplinarios con el objetivo de reducir la obesidad abdominal y mejorar el perfil bioquímico a la vez que esto contribuye a reducir el riesgo cardiovascular.
Az emelkedő ázsiai hatalmak diplomáciájának kulturális elemei I.
Authors: Környei Ágnes
Published: December 2024

Ázsia súlyának növekedése a nemzetközi rendszerben ma már kikerülhetetlen folyamat, a kulturális külkapcsolatokban is kimutatható ez az aktivizálódás. A vizsgálat a világhatalmak (Kína, India) mellett két aktív kulturális diplomáciát folytató regionális nagyhatalomra (Törökország, Japán) illetve egy középhatalomra, a kulturális dimenzióban nagyhatalomnak tekinthető Dél-Koreára terjed ki. Az elemzés kizárólag a diplomáciára, a kormányok fellépésére koncentrál, a kultúra fogalmát szélesen értelmezve. Ezek az emelkedő hatalmak kissé lemaradva kapcsolódtak be a nemzetközi kulturális együttműködésbe, sokszor valamilyen kényszerhelyzet (pl. negatív országkép, korábbi elzárkózás) hatására. A tanulmány első részében a hagyományos, az európai gyakorlatban kialakult területeket (pl. nyelvtanítás, ösztöndíjak, média) és a régi eszközök tudatosabb vagy módosított változatát (pl. diaszpórapolitika, nemzetközi fejlesztési együttműködés) vizsgáljuk, míg az újabbak bemutatására a második részben kerül sor.
Bienaventuradas las madres migrantes, porque de ellas será el Reino de Dios
Authors: Castillo Lobos Lucia , Martinez Cruz Alonso
Published: December 2024

Las madres migrantes latinoamericanas en Chile tienden a ocupar carentes espacios de subsistencia, los que perfilan la crianza de sus niñeces en condiciones que tensionan sus expectativas, deviniendo en desarraigo y frustración. El objetivo es analizar las representaciones de las creencias religiosas en los discursos de un grupo de madres migrantes en Santiago de Chile, sometidos a análisis temático de contenido según los supuestos de la teología de la migración. Se teorizó en torno a las categorías: un bastión de esperanza, la hermenéutica bíblica y la revelación. Los relatos obtenidos enuncian los avatares de la migración y su resistencia a través de la fe y su relación con Dios en una narrativa de liberación que entronca, en la salvación de Dios, la idea bíblica de los “bienaventurados” para erigirlas como un lugar teológico, por cuanto en ellas se devela el rostro de Dios que manifiesta su presencia profética y escatológica.
Usaha-Usaha Dalam Penjualan Produk (Studi Kasus: Sosis Champ PT PrimaFood)
Authors: Alifia Putri Febrika  , Haura Dwika Priandini  , Lutfiah Maulani Saputri  , Mahendrati Sekar Palupi  , Naerul Edwin Kiky Apriyanto  , Siska Eristina
Published: December 2024

Sales believes that more aggressive advertising and selling is needed because not enough customers or businesses are buying the goods offered by an organization on a regular basis. In the face of increasingly fierce market competition, this study investigates the sales strategy of PT Primafood Internasional's Champ brand instant sausage product. PT Primafood tries to implement an effective marketing strategy to increase sales due to the increasing demand for food products, especially animal products. The results of the analysis show that the competitive market structure affects the way the company markets its products. Through creative promotions and effective distribution, PT Primafood has succeeded in increasing brand awareness and sales. This study makes a significant contribution to the process of developing marketing strategies in the Indonesian processed food industry and suggests a method that is more sensitive to changes in consumer preferences.
Comparison Between Negative Pressure Wound Therapy Versus Standard Wound Care In Diabetic Foot Patients
Authors: Zahid Ali Rashid
Published: December 2024

Objective: To compare the effectivity of negative pressure wound therapy (NPWT) versus standard
modern wound care with moist dressings for treatment of diabetic ulcers in patients with type-II
diabetes presenting to a tertiary care hospital.
Methodology: This Randomized controlled trial was carried out at the Department of Surgery,
Combined Military Hospital, Peshawar from Jan-Jun 2023. The patients were randomized into two
groups of 95 patients each. Group N (n=95) to receive negative pressure wound treatment and Group
S (n=95) to receive standard moist dressing technique. Primary variables studied were time to
complete wound closure (100% epithelization), number of successful wound closures in each of the
two groups after 12 weeks of follow-up, median pain scores after 12 weeks of therapy were assessed
on the Visual Analog Scale (VAS) and satisfaction scores for wound closure taken on a standard 7-
point Likert scale.
Results: Mean time to complete wound closure following surgical treatment was 52.60+11.50 days in
Group N versus 50.96+9.96 days in Group S (p=0.294). Successful would closure following treatment
was seen in 88 (92.6%) patients in Group N versus 90 (94.7%) patients in Group S (p=0.517).
Conclusion: We conclude that standard moist wound therapy to be comparable and equally effective
in diabetic foot wound closure.
Key Words: Diabetes, diabetic foot, negative pressure wound therapy, standard, ulcers
Retornos forzados y precarios desde Estados Unidos a México: condiciones de deportación y expectativas de apoyo laboral
Authors: Jardón Hernández Ana Elizabeth , Murguía Salas María Verónica
Published: December 2024

El retorno forzado representa un evento de desajuste en la vida de las personas migrantes, particularmente cuando la reintegración laboral involucra múltiples desafíos que acentúan la precariedad, vulnerabilidad e incertidumbre. A partir del Módulo de Repatriación Humana y Trabajo Temporal del flujo de migrantes devueltos (se aplicó únicamente en 2008, EMIF Norte), este trabajo ofrece un análisis descriptivo sobre los esquemas de protección y apoyo laboral que las personas mexicanas devueltas desde Estados Unidos estimaban prioritarias para la toma de decisiones. Asimismo, se presentan las condiciones de cruce, estancia y retorno de las personas deportadas en los años 2012, 2016 y 2019 a fin de advertir que una mayoría de esta población piensa regresar y aspira obtener un empleo bien remunerado en sus lugares de origen.
Scoring the Outcomes of 1-3-3 Multistage Model of Computerized Adaptive Testing
Authors:   Georgian Computer Society, Razmadze Simon
Published: December 2024

The paper presented considers the ordering method of outcome set for multi-stage testing (MST) of 1-3-3 model. The ordering method of outcome set is used for the estimation of results of computerized adaptive testing (CAT). This method is not tied to a specific testing procedure. Acknowledgment of this is its usage for the 1-3-3 model, which is described in the paper. To sort the set of testing outcomes the function-criteria described in the initial article are used here and a comparative analysis of obtained results is performed. The ordered outcome set is estimated by a hundred-point system according to the normal distribution.
Privacy-Preservation and Data-Sharing Security Issues in Banking Applications
Authors:   The University of Georgia, Katsitadze Nikoloz , Olanrewaju Ajagbe Adeyinka ,   The University of Georgia
Published: December 2024

The digital transformation of the banking sector has brought forth unprecedented convenience for users but has also exposed financial institutions to a myriad of cyber threats. Maintaining user data security and privacy has become critical as digital banking develops. This research conducts a comprehensive analysis of security incidents in prominent digital banking institutions. Common patterns and distinctive features surrounding the preservation of user data privacy are identified through a cross-examination of these cases. The study unveils recurring themes and unique characteristics in these security incidents, and a subsequent cross-case analysis underscores that security breaches often implicate the three integral components of institutions: People, Processes, and Systems. This research contributes to the ongoing discourse surrounding digital banking security by providing valuable insights into prevalent vulnerabilities. Moreover, it proposes avenues for the formulation of robust security strategies, accompanied by recommendations for further research. As digital banking continues to play a crucial role in financial transactions, the findings aim to inform future practices that prioritize the protection of user data and the integrity of digital banking systems.
Forced Displacement, Socio-Economic Impacts and Misplaced Identity of Villagers: A Qualitative Exploration of Three Villages in Lahore
Authors: Ali Nadeem Mudasar , Ikram Kiran , Hussain Mussarat , Ahmed Lak Tauqeer
Published: December 2024

Displacement forces communities to shift their habitat, which may also affect their socio-economic status. Very few scholarly studies have documented its socio-economic impacts. Especially the effects of forced internal displacement resulting from the development of new housing societies are missing in the literature. To fill the gap, the present study explores the socio-economic impacts of internal displacement on villagers from three villages of Lahore. For this purpose, 18 in-depth interviews were conducted through purposive sampling. Qualitative methodology and methods were used to achieve the research objectives, select and recruit the research participants, and collect and analyze data. Internal forced displacement negatively affected the daily routine activities, social capital, breakdown in the family system, detachment and identity crises, and sense of community ownership. Displacement also generated economic dependence among villagers, making their skills and expertise irrelevant in relocated settings. Hence, proper resettlement policies and plans should be implemented before displacement to avoid negative socio-economic impacts.
Implementation of Digital Health Service Policies Based on Community-Based Research (CBR) to Improve Patient Accessibility in Remote Areas
Authors: Lindawati  , Marniati
Published: December 2024

Access to healthcare services remains a significant challenge for patients in remote areas, often due to geographical and infrastructural barriers. The integration of digital health services has emerged as a promising solution. This study explores the implementation of digital health service policies using the Community-Based Research (CBR) approach to improve patient accessibility in underserved regions. A CBR methodology was employed to engage stakeholders, including healthcare providers, local governments, and community members, in designing and evaluating digital health services. Data collection methods included participatory workshops, surveys, and interviews with key stakeholders to identify accessibility challenges and co-develop strategies. A pilot program involving telemedicine platforms and mobile health applications was implemented in three remote villages. Findings revealed that the collaborative approach significantly improved the adoption and usability of digital health technologies. Telemedicine services increased patient access to consultations by 45%, and the implementation of mobile health applications reduced travel times for medical care by 60%. Community involvement also led to increased trust and a better understanding of digital health solutions. The study demonstrates that leveraging the CBR approach facilitates the development of context-specific digital health solutions that address the unique needs of remote communities. However, challenges such as digital literacy and infrastructure limitations were identified, suggesting the need for further capacity-building initiatives. The CBR-based implementation of digital health service policies enhances patient accessibility in remote areas by fostering community engagement and tailoring solutions to local contexts.
Enhancing Cyber Psychology Literacy in the Digital Age through a Service Learning Approach for Students in India
Authors: Madanu Pavithra , Reddy G. Kavitha , B.J. Anitha
Published: December 2024

The digital age has significantly impacted human behavior and mental health, necessitating a deeper understanding of cyber psychology. However, cyber psychology literacy remains low among students in India, despite increasing internet penetration. Addressing this gap, the study implements a Service Learning (SL) approach to enhance students' knowledge of cyber psychology concepts and their practical application. The study engaged university students in a structured SL program comprising classroom-based theoretical instruction and community-based workshops. Quantitative pre- and post-program surveys assessed changes in students' knowledge and attitudes, while qualitative feedback provided insights into the program's impact. The findings showed a 45% increase in students' cyber psychology literacy, with statistical significance (p < 0.01). Key areas of improvement included online identity, cyberbullying prevention, and digital well-being. Qualitative feedback highlighted enhanced student confidence, improved teamwork, and leadership skills, as well as the program’s positive impact on community members. Community workshops increased awareness of digital challenges and practical strategies, with reciprocal benefits for students and the community. The study demonstrated that a Service Learning approach effectively bridges academic knowledge and practical applications, empowering students to address digital challenges and fostering community development. Identified challenges included initial student difficulties in public speaking and low community participation in some workshops, highlighting the need for improved training and outreach strategies. Service Learning is a promising pedagogical approach to enhance cyber psychology literacy among students while fostering societal impact. Future programs should address challenges identified in this study to maximize outcomes and scalability, with potential for broader application in digital mental health education.