bluuebunny/crossref_metadata_2025 huggingface dataset:
MILK FATTY ACID COMPOSITION IN HOLSTEIN COWS UNDER CHRONIC HEAT STRESS CONDITIONS
Authors: Danchuk V. , Midyk S. , Korniyenko V. , Izhboldina O. , Cherniy N. , Sydelnykov А. , Postoi V. , Mylostyvyi R.
Published: January 2025

This experiment was carried out to study the effect of temperature-humidity index (THI) and chronic heat stress on the intensity of fatty acid secretion by the mammary gland of Holstein cows. Twenty-five mature Holstein cows (130±25 days of lactation) with a daily milk yield of 30 kg were randomly assigned to one group. Morning milk was collected from these cows in spring, summer (high temperatures), and autumn, and the fatty acid profile of milk lipids was determined at comfortable temperatures of keeping and under conditions of chronic heat stress. Nineteen fatty acids were quantitatively determined in the milk of experimental cows by the gas chromatography method. Myristic (C14:0), palmitic (C16:0), stearic (C18:0), and oleic (C18:1n9c) fatty acids have the highest percentage content. These studies confirmed that long periods of heat can affect the quantitative composition of fatty acids in milk lipids. As a result of research, it was found that the THI can be used to predict the performance and milk fatty acid composition in lactating high-yielding cows of the Holstein breed. Under the values of THI 58 and 66, the intensity of lactation in cows and the fatty acid composition of the obtained milk did not differ significantly, although trends to changes were observed for individual fatty acids. An increase in the value of THI to 74 caused both a significant increase in the total content of unsaturated fatty acids (UFAs) in the milk of Holstein cows, as well as monounsaturated (MUFAs) and polyunsaturated (PUFAs), which was accompanied by a decrease in SFAs/UFAs ratio to the level of 1.87. This value was significantly lower than that of cows' milk collected in May and November. The increase in the relative content of milk fatty acids in Holstein cows at THI of 74 occurs mainly due to fatty acids with 18 carbon atoms in the chain. Thus, the relative content of C18:1n9c under conditions of chronic heat stress (THI 74) was 26.75±1.27, this value is 4.07% higher than in milk collected in May at THI of 66 and by 4.21% higher than in milk collected in November at THI of 58.
III Congreso Internacional de Ingeniería con Impacto Social CIIISOL 2023
Authors:   Universidad Cooperativa de Colombia
Published: January 2025

El III Congreso CIIISOL 2023 se llevó a cabo en el campus Medellín de la UCC, organizado por el grupo de investigación TERMOMEC y la facultad de Ingeniería de la sede Medellín. El enfoque del congreso fue identificar retos y oportunidades de la ingeniería frente al desarrollo sostenible, alineándose con los Objetivos de Desarrollo Sostenible (ODS). El evento congregó a diversos actores del ámbito académico e industrial, fomentando la colaboración entre académicos, investigadores, empresas, gremios, universidades y entes gubernamentales. Las temáticas claves incluyeron energía, agua y medio ambiente, materiales, procesos biotecnológicos, tecnologías de la información y comunicación (TIC), y estructuras, geotecnia, vías y transporte. El congreso contó con el respaldo de 21 instituciones de educación superior, así como el apoyo de 15 empresas del sector de la ingeniería y de agremiaciones y entidades como Minciencias, Icetex, Acofi, SAI y Copnia. El 25 % de los trabajos presentados se centraron en áreas como energía, agua y medio ambiente, mientras que el 31 % se enfocó en materiales y procesos biotecnológicos.
Back to the drawing board! Can drawing practice help our digitally depleted attention?

Authors: Pekowska Renata
Published: January 2025

This paper presents some of the key concepts and the practice-based, process-led stage of the research project focusing on exhibition related practices as sites of attention care, which focuses on conceptualising and conducting experimental formats of drawing event-workshops. This stage of the project envisages constructing and assembling multimodal sequences as ways to activate beyond-ocular and non-explicit modes of attention, through processes of interpretation of non-visual input by nonverbal processes of mark making. This research project interrogates expanded drawing workshop formats as sites of attention care, in the context of extractivist techno-capitalist agendas of attention economies of online media platforms.
 
I posit exploratory formats of drawing workshops as research and artistic practice, and as events with a potential to disrupt perception habits, to retune attention and to restore sensory nuance. Assembling the situation of ‘sensory attention’ and deepened sensory focus within a group can be set against what Sherry Turkle refers to as continuous, sustained partial attention of interacting with the online platforms. Sociable group aspect and intersubjectivity of a workshop setting can mitigate the visual media’s alienating effects, de-selfing the online self, and work against individualism towards seeing oneself as part of human and non-human world. 
 
I look into discursive potential of sites of presence and co-presence, generating sociable togetherness and situation-sharing through liveness and embodiment. I also aim to reclaim expanded workshop formats within outreach and education roles and posit them as research and artistic practice.
Managing Dental Extractions in Patients on Antiplatelet Therapy: A Comprehensive Approach
Authors: Giuseppe Marano
Published: January 2025

Dental extractions in patients under antiplatelet therapy present a unique set of challenges, primarily due to an increased risk of bleeding during and after the procedure. These medications are vital for preventing cardiovascular events but impair platelet function, potentially complicating oral surgical interventions. This article explores the interaction between antiplatelet drugs and dental procedures, focusing on practical strategies, evidence-based guidelines, and clinical considerations to ensure patient safety and optimize outcomes. It provides an in-depth review of current literature and practical recommendations for dental professionals.
Confiabilidad inter-evaluador y test-retest de la prueba de alcance multidireccional sentado en jugadores de baloncesto en silla de ruedas: Una prueba clínica de campo
Authors: Bogado Diego Javier , Boscarol Kevin Andrés , Blajman Jésica Evelyn
Published: January 2025

Being able to define the maximum functional range that a wheelchair basketball player can achieve is very important, however, the use of a clinical tool to measure reach from the sitting position is not well documented. For this purpose, the Seated Multidirectional Reach Test (SMRT) was designed as a field test to evaluate a player's performance in his action volume and detect bilateral differences in multiple directions. A study was carried out on 30 players (age = 25.02 ± 6.39) of the Argentine men's wheelchair basketball team, to analyze inter-rater (n=32) and intra-rater (n=32) reliability of the SMRT. Relative intra-rater (0.95-0.98) and inter-rater reliability (0.91-0.98) was excellent in all measurements. The standard errors of measurement (SEM) ranged from 2 to 6%, while the minimal detectable change (MDC) ranged from 9 to 16%. The findings of this study suggest that the SMRT is reliable between measurements and between evaluators, and could be an appropriate tool to use as a clinical measure of reaching performance and to describe the volume of action in wheelchair basketball players.
Uso del juego como recurso didáctico en los procesos de enseñanza y aprendizaje: Percepción de profesores del sistema escolar
Authors: Merellano Navarro Eugenio , Almonacid-Fierro Alejandro , Bravo Basualto Danae , Correa Pérez Fabian , Medina Rojas Gabriel , Valenzuela Beltrán Lenin
Published: January 2025

Introduction: Play is present in every age range, assuming a very important role in the learning and maturation of children. Play makes a great contribution to social, cognitive and emotional development, in addition to its playful sense, it favors creativity, socialization and school coexistence, especially in early childhood. Objective: This research aims to identify the perception of primary and secondary school teachers regarding play as a didactic resource in the teaching and learning processes. Methodology: Sample composed of 16 teachers from a convenience sample, using semi-structured interviews and focus groups as data collection techniques. The reduction and analysis complied with the following steps: transcription, coding and subsequent categorization. Results: Play is an essential element in the life and education of children, youth and adults. In relation to the above, teachers describe positive sensations and learning through play, being a common factor in the classes of the various school disciplines. Conclusions: The perspective of the educators regarding the use of play is diverse in its application and frequency, however, the notion, relevance and meaning of play as a didactic resource is shared.
JAX_DPC: Protocol to produce human dorsal forebrain organoids v1
Authors: not provided anahita.amiri , Lorig Cole , Fleming Patrick , Alcoforado Diniz Juliana , Vaccarino Flora , Robson Paul
Published: January 2025

Brain organoid models have enormous potential for investigating normal fetal brain development such as cell fate mapping, lineage analysis, and evolution as well as disease modeling, drug screening and are potential source for regenerative medicine. Here we describe a detail protocol for generating human dorsal forebrain organoids. This protocol has been modified from Rigamonti et al 2016.
INNOVATIVE APPROACHES TO OPTIMIZING THE EDUCATIONAL PROCESS IN HIGHER EDUCATION IN THE TRAINING OF FUTURE TEACHERS
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, HOLOVKO Nataliya , KRYKUN Alina ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: January 2025

Background. Innovations in education are the process of creating, implementing, and disseminating new ideas, tools,
pedagogical and managerial technologies in educational practice, resulting in improved indicators (levels) of the achievements of structural components of education, and a transition of the system to a qualitatively different state. Innovation means introducing something new into the goals, content, forms, and methods of teaching and education; into the organization of joint activities between the teacher and the higher education student. The word "innovation" has a multifaceted meaning, as it consists of two forms: the idea itself and the process of its practical implementation.
Results . Innovations in pedagogy should be considered as the implementation of new ideas, proposals, technologies,
services, anything that can improve the development and results of the educational process. Information technologies in the
educational process expand the possibilities of setting and solving various educational tasks, provide the opportunity to visually display the stages of solving a particular task, allow for quality control over the activities of higher education students, and diversify and optimize the educational process. Summarizing the research of scientists, we believe that optimizing the educational process involves a well-founded choice of content, innovative pedagogical technologies, methods, and means of teaching that would stimulate and motivate higher education students to activate their cognitive activity.
Conclusions. Optimization is possible through the implementation of modern information and communication
technologies (ICT) in the educational process, resulting in changes in teaching, modernization, and improvement of educational programs for future teachers. Information technologies in the educational process expand the possibilities of setting and solving various educational tasks, provide the opportunity to visually display the stages of solving a particular task, allow for quality control over the activities of higher education students, and diversify and optimize the educational process.
Pelsonian and Illyrian (Anisian, Middle Triassic) ammonoid faunas from the Bulog Group of Kovčezi, Durmitor Mountain, Dinarides (northern Montenegro)
Authors: Đaković Martin , Mrdak Milica , Gawlick Hans-Jürgen
Published: January 2025

Three different ammonoid assemblages of Anisian age are described from the Anisian Bulog Group of the Kovčezi section in the Durmitor Mountain (northern Montenegro/Dinarides). The Illyrian is represented by a succession belonging to the Komarani and Bulog Formations, together approximately 50 m thick. The Komarani Formation of late Illyrian age consists predominanty of oligomictic breccias and mass-transport deposits that contain redeposited Bulog Limestone blocks with Pelsonian ammonoids. Within the late Illyrian Bulog Formation above the Komarani Formation, two distinct condensed nodular limestone levels contain rich ammonoid faunas. In total 36 taxa could be determined, belonging to 24 genera of the Aplococeras avisianum and Nevadites secedensis zones. Ptychites rugifer (Oppel), Megaphyllites obolus Mojsisovics, Parakellnerites rothpletzi (Salomon), Apleuroceras decrescens (Hauer), Proteusites labiatus (Hauer), Tropigastrites lahontanus Smith, Proarcestes pannonicus (Mojsisovics) and Proarcestes subtridentinus (Mojsisovics), and the genus Aristoptychites are for the first time described from Montenegro (south Central Europe).
Dijkgraaf-Witten Theory for Surfaces
Authors: Fender Austin
Published: January 2025

In this paper I describe Dijkgraaf-Witten theory as it applies to oriented
surfaces. The first section provides physical motivation from the background of
quantum field theory along with necessary definitions and ingredients of a
topological quantum field theory. These include category theory, fiber bundles,
covering spaces and bordisms. In the second section we make clear the connection
between bordisms and principal G-bundles. We then describe the
machinery of Dijkgraaf-Witten theory and explicitly construct a topological
quantum field theory for the circle. This leads to a brief interlude on
representation theory which we use to give constructions on elementary bordisms
and this section concludes with an extension to constructions on oriented
surfaces of any genus. The final section contains cloncluding remarks, and we
see how two equivalent interpretations of a TQFT on a closed oriented manifold
gives a nice reproduction of Mednykh's formula.
Students' Opportunity to Struggle in Middle Grades Mathematics
Lessons
Authors: Uriarte Ramey
Published: January 2025

Mathematics education researchers suggest that providing the opportunity to
struggle with important mathematics (SOS) is a necessary component of lessons in
order for students to conceptually understand mathematics. There are many ways
to promote and support SOS, yet very few lessons demonstrate SOS in today’s
middle grades classrooms. This study illuminates 12 lessons found to demonstrate
high levels of SOS in four middle grades classrooms. It specifically examines
the way lessons are structured and the teaching practices used within lessons
containing high levels of SOS. It seeks to answer the questions: What lesson
structures were implemented in middle grades mathematics classrooms with high
levels of SOS? and What teaching practices were implemented in middle grades
mathematics classrooms with high levels of SOS? I used a collective instrumental
case study approach to illuminate the ways teachers sequenced and organized
phases of activities within their lessons and the teaching practices used within
those lesson phases in four middle grades classrooms exhibiting high levels of
SOS within a larger study in the state of Idaho. Classroom videos of selected
lessons provided the source of data for this study. Inductive and deductive
analysis uncovered lesson structures and teaching practices within the lessons
with high levels of SOS which are described in this study. The data showed
overall patterns of using a three-phase lesson structure and the use of teaching
practices categorized into four instructional elements within the lessons.
However, there was variability in terms of the amount of time spent in each of
the lesson phases and the number of mathematical tasks used per lesson as well
as variability in the teaching practices used. Vignettes describe rich and/or
unique instances of SOS found within the study’s sample lessons.
УВЕЛИЧЕНИЕ ДОЛИ АТОМНОЙ ЭНЕРГЕТИКИ КАК АСПЕКТ ГЛОБАЛЬНОГО УСТОЙЧИВОГО РАЗВИТИЯ
Authors: Альмендеева В.В.
Published: January 2025

Исследование роли атомной энергии с точки зрения реализации целей устойчивого развития является крайне актуальным в условиях стремления стран к достижению энергетической безопасности и независимости без вреда для экологии. Атомная энергетика по своей сути представляет собой обособленный вид источника энергии, ввиду того, что не относится к альтернативным источникам, но и не является полноценным традиционным ресурсом. Вместе с тем значительное количество целей устойчивого развития, сформированных ООН, напрямую зависит от уровня эффективности, стабильности и безопасности эксплуатируемых странами энергосистем. В статье рассматривается место атомной энергетики в процессе достижения глобального устойчивого развития. Приводится значение термина «устойчивое развитие», анализируются основные положения и принципы концепции ООН. Атомная энергетика может стать одним из ключевых инструментов на пути к достижению глобального устойчивого развития и реализации целей, поставленных ООН.

The article examines the place of nuclear energy in the process of achieving global sustainable development. The meaning of the term “sustainable development” is given, the main provisions and principles of the UN concept are analyzed. The study of the role of nuclear energy in terms of the implementation of the Sustainable Development Goals is extremely relevant in the context of countries’ commitment towards achieving energy security and independence without harm to the environment. Nuclear energy is essentially a separate type of energy source, since it does not belong to alternative sources, but it is also not a full-fledged traditional resource. At the same time, a significant number of Sustainable Development Goals formulated by the United Nations directly depend on the level of efficiency, stability and safety of energy systems operated by countries. In this regard, consideration of the issue of increasing the share of nuclear energy in the global energy system is extremely relevant.
ВЛИЯНИЕ ЦИФРОВИЗАЦИИ НА ФОРМИРОВАНИЕ РЕГИОНАЛЬНЫХ ПРОДОВОЛЬСТВЕННЫХ РЫНКОВ ПРИВОЛЖСКОГО ФЕДЕРАЛЬНОГО ОКРУГА
Authors: Мазеина Е.А.
Published: January 2025

Исследование влияния цифровой экономики на формирование и интеграцию рынков продовольствия представляет собой одно из важных направлений региональной экономической науки. В статье ставилась задача выявления взаимосвязи между спросом на продовольственные товары и показателями цифровизации экономики. Анализ достоверности гипотез о степени влияния разных групп факторов на спрос на продовольственные товары показал положительную взаимосвязь между цифровизацией и уровнем продовольственного обеспечения. Социально-экономические и демографические факторы оказывают воздействие на уровень продовольственной безопасности по-разному в зависимости от вида рынка. Спрос на продовольствие не только формируется под влиянием уровня жизни населения, но и в силу его неэластичности непосредственно зависит от количества населения. Вместе с тем можно говорить о наличии потенциальных возможностей цифровизации продовольственных рынков, развитии новой индустриальной экономики.

The study of the impact of the digital economy on the formation and integration of food markets is one of the important areas of regional economics. The article aimed to identify the relationship between food demand and the indicators of digitalization of the economy. The analysis of the validity of hypotheses on the influence of different groups of factors on the demand for food commodities showed a positive relationship between digitalization and the level of food supply. Socio-economic and demographic factors have different impacts on food security depending on the type of market. Food demand is influenced by the population’s standard of living, and also directly depends on the number of people because of its inelasticity. However, there is potential for digitalization of food markets and development of a new industrial economy.
ИНВЕСТИЦИОННЫЕ СТРАТЕГИИ РОССИЙСКИХ НЕФТЯНЫХ КОМПАНИЙ В АФРИКЕ: ФАКТОРЫ И ПРИНЦИПЫ ФОРМИРОВАНИЯ
Authors: Молодцов К.В.
Published: January 2025

Целью настоящей работы являлось исследование инвестиционных стратегий российских нефтяных компаний в Африке посредством анализа основных факторов и принципов их формирования. Цель исследования достигалась посредством решения ряда задач: 1) выявление причин и предпосылок роста инвестиционной привлекательности африканского континента для представителей российского нефтяного бизнеса; 2) определение наиболее значимых групп факторов, оказывающих влияние на инвестиционный климат государств Африки; 3) краткое рассмотрение истории проникновения в африканский регион ведущих российских нефтяных компаний; 4) выработка рекомендаций в области оптимизации инвестиционных стратегий российских нефтяных компаний в Африке. Автором сделан вывод о том, какие именно из выявленных групп факторов оказывают положительное и отрицательное влияние на формирование инвестиционных стратегий российских нефтяных компаний в Африке, а также о наиболее перспективной линии развития инвестиционных инициатив Российской Федерации в африканском регионе.

The purpose of this work was to study the investment strategies of Russian oil companies in Africa by analyzing the main factors and principles of their formation. The aim of the study was achieved by solving a number of problems, namely: 1) identifying the reasons and prerequisites for the growth of investment attractiveness of the African continent for the representatives of the Russian oil business; 2) identifying the most significant groups of factors influencing the investment climate of African states; 3) a brief consideration of the history of penetration of leading Russian oil companies into the African region; 4) developing recommendations in the field of optimizing investment strategies of Russian oil companies in Africa. The article concludes which of the identified groups of factors have a positive and negative impact on the formation of investment strategies of Russian oil companies in Africa, as well as the most promising line of development of investment initiatives of the Russian Federation in the African region.
ПРАВО В УСЛОВИЯХ АНТРОПОЛОГИЧЕСКОГО ЦИВИЛИЗАЦИОННОГО ПЕРЕХОДА В ЦИФРОВОЕ ОБЩЕСТВО
Authors: Кашкин С.Ю.
Published: January 2025

В статье рассматривается эволюция права в условиях современной научно-технологической революции и перехода к цифровому обществу. С междисциплинарных позиций комплексно и системно исследуется влияние новейших технологий на развитие правовых отношений и их воздействие на людей. Показано движение от информационного права к сетевому, затем к платформенному и экосистемному, с тем чтобы применить правовые механизмы для устойчивого развития и благополучия граждан. Рассматриваются негативные примеры влияния новейших технологий и искусственного интеллекта на личность человека и даются рекомендации, как этого избежать с использованием права. Применяются методы сравнительного правоведения, правового моделирования, анализа, синтеза, а также диалектический, императивный, диспозитивный и коллизионный методы исследования.

The article examines the evolution of law in the context of modern scientific and technological revolution and the transition to a digital society. It comprehensively and systematically examines the influence of new technologies on the development of legal relations and their impact on people from an interdisciplinary perspective. The movement from information law to network law, then to platform and ecosystem law is explored in order to apply legal mechanisms for sustainable development and well-being of citizens. The negative examples of the impact of new technologies and AI on a person’s personality are considered and recommendations are given on how to avoid this using the law. The study applies the methods of comparative law, legal modeling, analysis, synthesis, as well as dialectical, imperative, dispositive and conflict of laws methods of research.
Holistic Sustainability Assessment of Certified Organic, Non-Certified Organic, and Non-Organic Rice Farming Practices Using SAFA Framework in Sleman Regency, Indonesia
Authors: Romadhona Sukron , Puryono Sri , Mussadun  , Rachmawati Siti
Published: January 2025

Sustainable development on a regional scale can be accelerated if organic farming management methods are adopted in Indonesia. This research utilized the Sustainability Assessment of Food and Agriculture (SAFA) framework due to its comprehensive coverage of sustainability and accessibility for producers and decision-makers. This study compared the sustainability of certified and non-certified organic as well as non-organic farms in Sleman Regency across four dimensions: good governance, environmental integrity, economic resilience, and social welfare, focusing on how different farming practices impact sustainability indicators. A total of 9 farmer groups participated in this study, categorized based on their farming practices and certification. The results unveiled that certified organic rice farming achieved the highest sustainability score. Specifically, certified organic farmer groups excelled in the economic sub-themes of product quality and information (82%) and local economy (90%), as well as the social sub-themes of labor rights (86%) and equality (80%). Meanwhile, non-certified organic farming performed highly in the local economy sub-theme (82%). In contrast, non-organic farming scored the highest in the sub-themes of investment economy (80%) and fair-trade practices (81%) but demonstrated low scores in holistic management (40%) and impact on the atmosphere (36%). Hence, certified organic rice farming outperformed non-certified organic and non-organic practices regarding sustainability. Key factors affecting farm sustainability included organic fertilizers, sustainable water management, local economic improvement, equity, labor conditions, biodiversity preservation, and product quality and information. These findings highlight the significance of adopting certified organic farming to achieve higher sustainability in agriculture.
PESTEL Analysis of Smallholder Wool Producers for Improved Efficiency and Rural Livelihoods: A Case Study of The South African Wool Value Chain
Authors: Ntsiapane Alina , Swanepoel Jan , Nesamvuni Azwihangwisi
Published: January 2025

Wool production has great potential to alleviate food insecurity and poverty in South Africa, but declining national output poses significant challenges. The lack of comprehensive studies on macro-environmental factors and efficiency in smallholder wool farming hinders effective policymaking and resource allocation to improve sustainability. This study conducted a PESTEL analysis and introduced a model to improve the efficiency of smallholder wool farming and rural livelihoods through the evaluation of the industrial macro environment. The PESTEL analysis assisted farmers in identifying future macroeconomic variables to ensure the proper development and sustainability of their wool farming. The analysis uncovered a negative correlation between the efficiency of wool farming and the lack of access to information, markets and credit, feed costs, inadequate extension services, and farmers’ lack of knowledge. Consequently, this study advocated for the training of smallholder wool farmers to improve their wool quality, extension services, and access to information, markets, and credit. This research further proposed minimum operational and transaction costs to enhance the overall efficiency of smallholder wool production in Thaba ‘Nchu and Botshabelo.
The Effect of E-Recruitment on Company Attractiveness with the Role of Organisational Reputation as a Mediating Variable
Authors: Abdillah M. Ilham Timur , Suyono Joko
Published: January 2025

This recruitment process is very important in selecting the right candidates for jobs in the company. Traditional methods such as newspaper and television advertisements have been replaced by electronic recruitment (e-recruitment) systems as a result of technological advances, particularly the Internet. This study looks at how e-recruitment affects an organization's attractiveness from the point of view of prospective employees who use this system to apply for jobs. This study used a quantitative approach and was designed as a survey. A purposive sampling technique was used to select 213 freshmen. Participants were selected based on certain criteria related to the study. The partial least squares (PLS-based) structural equation modeling (SEM) method was used to analyze data collected through an online questionnaire. The results showed that e-recruitment had a major impact on fresh graduates' perceptions of the attractiveness and reputation of the organization. Factors such as e-recruitment content quality, website design, and communication and feedback systems play a major role in shaping these perceptions. The findings help us understand how e-recruitment can increase an organization's attractiveness and how this has practical implications for companies in designing a website.
POBREZA ENERGÉTICA E SISTEMAS FOTOVOLTAICOS NO MINHA CASA MINHA VIDA
Authors: Leite Cristiana de Sousa , Lopes Wilza Gomes Reis , Lira Marcos Antonio Tavares
Published: January 2025

A eletricidade possibilita o atendimento das necessidades básicas das famílias e seu acesso em quantidade e qualidade insuficientes caracteriza pobreza energética. Esta pode ser combatida com uso de sistemas fotovoltaicos (SFV), como os previstos no Programa habitacional Minha Casa Minha Vida (PMCMV). Este artigo objetiva estimar o impacto da adoção de SFV para a pobreza energética de famílias de baixa renda beneficiadas pelo PMCMV, focando em Brasil, Nordeste e Piauí. Foram utilizados dados oficiais de consumo residencial e renda per capita para calcular a pobreza energética, com indicadores baseados em despesa absoluta e despesa relativa das famílias com eletricidade. O efeito dos SFV foi estimado considerando, nestes indicadores, os sistemas previstos na legislação do PMCMV. Apenas as famílias do Nordeste foram consideradas pobres energeticamente, com base na despesa relativa. Em todos os casos analisados, as despesas das famílias seriam diminuídas significativamente com a adoção dos SFV, minimizando as desigualdades sociais.
Applying neural networks in coordinated group signal transformation to improve image quality
Authors:   Ufa University of Science and Technology, Lopukhova E.A. , Voronkov G.S. ,   Ufa University of Science and Technology, Kuznetsov I.V. ,   Ufa University of Science and Technology, Ivanov V.V. ,   Ufa University of Science and Technology, Kutluyarov R.V. ,   Ufa University of Science and Technology, Sultanov A.Kh. ,   Ufa University of Science and Technology, Grakhova E.P. ,   Ufa University of Science and Technology
Published: January 2025

The rapid development of the Internet of Things and wireless sensor networks combined with the introduction of image analysis systems and computer vision technologies has led to the emergence of a new class of systems – multimedia Internet of Things and multimedia wireless sensing networks. The combination of the specifics of the Internet of Things, which requires simultaneous and long-term operation of a large number of autonomous devices, with the need to transmit video data poses the problem of creating new energy-efficient methods of image compression. The paper considers applying coordinated group signal transformation as such an algorithm, which performs compression based on the input signals’ correlation. Correlation between the image color channels makes this possible. However, it was necessary to supplement this method by clustering the original images using machine learning methods for better image reconstruction at reception. The criterion for clustering was the change of image gradient. The use of radial neural network in the clustering algorithm increased the speed of the proposed method. The resulting algorithm provides at least fourfold image compression with high-quality image restoration. Moreover, for multimedia Internet of Things systems, in which quality losses are acceptable, it is possible to provide large compression ratios without increasing computational complexity, i.e., without increasing power consumption.
Inhomogeneous chiral metamaterials: optical wave reflection analysis with regard to the dispersion of material parameters
Authors:   Povolzhskiy State University of Telecommunications and Informatics, Panin D.N. , Osipov O.V. ,   Povolzhskiy State University of Telecommunications and Informatics
Published: January 2025

The paper considers a planar chiral metamaterial of the optical spectrum. The material parameters of metamaterial depend on the frequency and one spatial coordinate. The mathematical model of metastructure is based on the well-known dispersion models of the permittivity, permeability and chirality parameter. A novelty in the mathematical model of a metamaterial is the consideration of the heterogeneity of all material parameters. In this paper we consider a problem of the incidence of a plane linearly polarized optical wave on a planar layer of a chiral metamaterial. We develop a method for calculating reflection coefficients of an optical wave from the considered inhomogeneous chiral structure, which is based on using a differential sweep method. When constructing a mathematical model, the cross-polarization of the optical wave field was taken into account, which consists in the appearance of orthogonal components during the interaction of the field with a chiral metamaterial. The solution of the problem was reduced to a matrix differential equation for the unknown reflection coefficients of the main and cross-polarized components of the optical field. Chiral metamaterials with linear and parabolic inhomogeneity profiles were considered in the work. Based on the results of numerical calculation of reflection coefficients of the main and cross-polarized components, it is proved that the inhomogeneity of the material parameters leads to a significant decrease in the level of cross-polarized component of reflection. It is shown that the use of inhomogeneous chiral layers also makes it possible to lower the level of reflection of the optical field main component. It is also proved that a layer of a planar inhomogeneous chiral metamaterial in the optical spectrum reflects waves of s- and p- polarizations differently.
Experimental and Numerical Investigation on Strengthening Techniques for Double-Wythe Stone Masonry Walls
Authors: Doran Bilge , Hothot Yasin Murat , Dinç-şengönül Burcu , Karslıoğlu Metin , Ulukaya Serhan , Yüzer Nabi
Published: January 2025

Masonry structures represent the architectural and cultural heritage of great historical importance. They have been used for public and residential buildings for several thousand years. Many well-preserved old masonry structures still exist, proving that this construction can overcome loads and environmental impact. These structures have been exposed to lateral and vertical loads and atmospheric influences throughout their lives. In masonry structures, undesirable damage, cracks, and voids may occur due to environmental factors or various natural disasters, such as earthquakes, which may cause the structure to collapse. Different conventional strengthening techniques are available depending on the purpose required for stone masonry walls. This study aims to evaluate the structural behavior of double-wythe travertine stone masonry walls strengthened by carbon fiber reinforced polymer (CFRP). For this purpose, two masonry stone walls, which are made of saw-cut travertine stones and constructed with English bond, a pattern formed by laying alternate courses of stretchers and headers, were constructed and tested under in-plane monotonic lateral load and constant axial load. Lateral load-displacement relations and failure mechanisms were discussed. In addition, triaxial compression tests of stone, mortar, grout, and stone-mortar composite materials were performed to determine constitutive relationships. Furthermore, three-dimensional (3D) nonlinear finite element analysis (NLFEA) of stone masonry walls using the Drucker-Prager (DP) yield criterion was performed for unstrengthened stone masonry walls and strengthened ones with grout injection and CFRP. The study findings revealed that the proposed numerical modeling approach can accurately predict the experimental lateral load-displacement behavior of both strengthened and unstrengthened specimens subjected to in-plane combined axial loading and shear. Additionally, the model demonstrated its capability to simulate the experimental load-displacement and cracking patterns effectively.
Donat Semenovich Sarkisov: on Pathological Anatomy, Experimental Medicine and Philosophy
Authors: Mnikhovich M. V. , Akhsanova P. A. , Shiripenko I. A. , Bezuglova T. V. , Lozina M. V. , Sidorova O. A.
Published: January 2025

D.S. Sarkisov is an outstanding pathologist, scientist, researcher and philosopher. The works of D.S. Sarkisov do not lose their relevance in the 21st century, when medicine is moving far forward thanks to modern high-tech techniques. However, turning to the yellowed pages of D.S. Sarkisov’s works, one can find discussions on topical topics in medicine, such as the formulation of a diagnosis, which is impossible not to argue about today. Thanks to his philosophical approach to the organization of work, D.S. Sarkisov was able to create generalizing works, for example, in the field of experimental medicine, as a result of which we can, after reading one of his books, get a general idea of the current state of the issue. This rare ability to rise above all pressingmedical issues and the scientific data accumulated on them allowed Donat Semenovich to win the true respect and love of fellow clinicians and pathologists. I.V. Davydovsky had another equally extraordinary approach to work, the similarity of opinions with whom the authors discuss within the article. The desire for a comprehensive discussion of medical and scientific problems brought D.S. Sarkisov not only to face-to-face conferences, but also to the pages of well-deserved scientific publications. The discussions of D.S. Sarkisov and colleagues serve as a brilliant example of scientific dialogue. In personal and work relationships, D.S. Sarkisov also left an indelible impression on people who were lucky enough to communicate with him in person, as evidenced by touching articles dedicated to his memory.
Peri-Implantation Targeting Using Modified Adenoviral Vectors
Authors: Serezhnikova N. B. , Faizullin A. L. , Antoshin A. A. , Timakova A. A. , Ivanova E. I. , Ershov B. P. , Faizullina N. M. , Ulasov I. V. , Malogolovkin A. S. , Kotova S. L. , Timashev P. S.
Published: January 2025

The aim was to conduct a comparative morphological analysis of the effect of implantation and modified adenovirus Ad 5/3 on the efficiency of local gene delivery to cells of the peri-implantation niche in vivo. Material and methods. The experiments were carried out on laboratory rats, which were implanted with collagen membranes for a period of 2 weeks. Three and seven days after the introduction of adenoviruses (wt, Ad 5/3), the tissues were fixed for histological examination and analysis of transduced cells by in situ PCR. Results. The results showed that the presence of a collagen implant improved the biodistribution of viral particles, and the modification of Ad 5/3 significantly increased the efficiency of transduction of fibroblasts and macrophages in the peri-implantation zone. In the absence of an implant, the transduction efficiency decreased for both types of adenoviruses. Morphometric analysis revealed that the main transduced cells were fibroblasts of the connective tissue capsule surrounding the implant. Conclusion. Based on comparative morphological and molecular biological studies, an optimal protocol for local gene delivery using adenoviral vectors for peri-implantation targeting was determined. The effect of adenovirus modification on the tropism and efficiency of gene delivery to the cellular components of the PIN was characterized, and it was found that Ad 5/3 significantly exceeds AD wt in these parameters. The development and further application of the peri-implantation targeting method proposed by us can ensure local, effective and safe gene delivery, which will significantly expand the indications for gene therapy and its availability to doctors and patients. In addition, this method can be adapted for use in various organs and for various diseases.
Prediction of Macroeconomic Growth Using Backpropagation Algorithms: A Review
Authors: Hidayanti Nur Fitri , Syaharuddin  , Ningsih Nurul Hidayati Indra , Hulaimi Ahmad , Ariani Zaenafi , Iswanto Dedy
Published: January 2025

This study aims to evaluate the effectiveness of the backpropagation algorithm in predicting macroeconomic growth through a Systematic Literature Review (SLR) approach. The review analyzes literature sourced from reputable indexes such as Scopus, DOAJ, and Google Scholar, focusing on publications from the last decade (2013–2024). It examines various studies on the application of the backpropagation algorithm, including parameter settings and model selection that influence prediction accuracy. The findings indicate that careful parameter configuration, such as the number of neurons, hidden layers, and learning rates, along with appropriate model selection, significantly enhance the performance of the backpropagation algorithm in macroeconomic prediction. This study highlights that combining optimal techniques and accurate parameter configurations substantially improves prediction accuracy and efficiency. It provides valuable insights and practical guidance for researchers and practitioners in designing more reliable and effective macroeconomic prediction models.
Implementation of rhAmp SNP genotyping for the detection of the B3GALNT2 gene mutation associated with congenital hydrocephalus in Friesian horses in southern Sonora
Authors: Alcaraz-González Karla Marian , Borbolla-Hernández José Rubén , Aragón-López Carlos Eduardo , González-Galaviz José Reyes , Reyna-Granados Javier Rolando , Luna-Nevárez Pablo
Published: January 2025

Congenital hydrocephalus is a recessive genetic abnormal condition affecting Friesian horses, so the identification of healthy carrier animals is crucial to avoid its spread. Therefore, the objective of the present study was the detection of the mutation in the B3GALNT2 gene related to the presence of hydrocephalus through the rhAmp SNP technique to detect healthy carrier horses. The study was performed in 4 locations in southern Sonora, Mexico. Blood samples were collected from 51 Friesian horses using EDTA tubes, which were centrifuged until the leucoplatelet layer was obtained. Subsequently, the TACOTM DNA extraction kit was used to obtain DNA, which was processed by the rhAmp SNP assay to detect the mutation in the B3GALNT2 gene. A total of 7 (13.7%) Friesian horses were found to be heterozygous carriers (C/T). In conclusion, the presence of the mutant allele was confirmed by the rhAmp SNP assay, which was proposed as an effective molecular technique for the detection of horses as carriers of genetic abnormal conditions.
Resistencia de líneas de soya a Alternaria spp., Septoria glycines y marchitez por enfermedades del suelo
Authors: Alcalá Rico Juan Samuel Guadalupe Jesús , Maldonado Moreno Nicolás , García Rodríguez Julio Cesár , Camposeco Montejo Neymar , Tafolla Arellano Julio Cesar
Published: January 2025

El objetivo del presente estudio fue determinar las líneas de soya resistentes a la incidencia de Alternaria spp., Septoria Glycines y marchitez por enfermedades del suelo (MPES), así como verificar su relación con el rendimiento. Se utilizaron 36 líneas avanzadas y cuatro variedades de soya. En la tapa fenológica R7 de cada línea, se tomaron datos de la incidencia a través de una escala de 1 a 5 donde 1 fueron plantas sanas y 5 plantas con ≤ 100% de incidencia por la enfermedad. En promedio Alternaria spp. tuvo mayor incidencia en las líneas. Además, los primeros dos componentes principales explicaron el 81.8% de la variación total. Las líneas G9, G22, G26, G27, G31, G33 y G34 destacaron por su baja incidencia de Septoria glycines. Bajo la misma condición sobresalió Huasteca 700 con Alternaria spp. y las líneas G28 y G32 al tratarse de MPES. La relación de las líneas permitió formar dos grupos (A: susceptibles y B: resistentes), que a su vez se dividieron en dos y tres subgrupos, respectivamente. Así mismo, se determinó que estas enfermedades presentaron una correlación negativa con el rendimiento, siendo Septoria glycines la enfermedad que presentó mayor efecto directo negativo sobre el rendimiento.
Evaluation of bromelia karatas as a bioindicator of lead contamination
Authors: Saenz Samuel E. , Ruíz Balcázar Antonio de Jesús , Ruiz Lau Nancy , Enciso Pinto Sofía , Luján Hidalgo María Celina , VILLALOBOS MALDONADO JUAN JOSÉ
Published: January 2025

Abstract: metals toxic contamination is a problem that has increased mainly due to anthropogenic activities. Lead (Pb) is a hightly toxic metal present in the environment due to industrial activities, such as mining, smelting, manufacturing, and burning of fossil fuels. 
This work studied Bromelia karatas as a bioindicator of the quality of the environment in the presence of lead. Forty 200-day-old plants (Bromelia karatas) were used, of which 30 were transplanted in a substrate (Peat moss) contaminated with Pb, using Pb(NO3)2 as a contaminating agent, at different concentrations, T1= 1000, T2=2000 and T3=3000 mg/kg (milligram of Pb/Kilogram of substrate), and 10 were used as control (Tc).
At the end of the experiment, the presence of Pb was analyzed and found in the plant tissues (leaves and roots), using the ICP-OES equipment. This research revealed the potential of Bromelia karatas as a bioindicator of Pb contamination in soil, causing visible symptoms of foliar damage on its leaves with high doses of the contaminant. The low cost, easy reproduction and portability of bromeliad compared to other bioindicators make it a better option to be used as a bioindicator and/or biomonitor.
Efecto de la aplicación de altas presiones hidrostáticas sobre la inactivación de Escherichia coli O157:H7 y el perfil volátil de jugo de maracuyá (Passiflora edulis)
Authors: Calderón-Santoyo Montserrat , Ramos-Hernández Jorge Alberto , Barros-Castillo Julio César , Velázquez-de la Cruz Gonzalo , Ramírez-de-León José Alberto , Ragazzo-Sanchez Juan Arturo
Published: January 2025

Se determinó el efecto de altas presiones hidrostáticas (APH) sobre la inactivación de Escherichia coli O157:H7 en jugo de maracuyá (Passiflora edulis), se evaluaron algunas características fisicoquímicas y aromáticas del jugo de inoculado. Se empleó un diseño 33 considerando como factores la presión, temperatura y tiempo de tratamiento (150, 200, 250 MPa; 25, 35, 45 º C; 0, 10, 20 min). Se aplicó un modelo cuadrático para la optimización de las condiciones de proceso empleando la metodología de superficie de respuesta. Se determinó E. coli en jugo almacenado (6 días, 4 ºC). El perfil volátil se analizó empleando la técnica de microextracción en fase sólida de espacio de cabeza (HS-SPME) y GC-MS. Se observó que a partir 150 MPa y 35 º C, se inactiva totalmente E. coli. Los tratamientos no tienen efecto sobre los sólidos solubles totales (SST) del jugo, lo que sugiere aceptabilidad por los consumidores. Respecto al perfil volátil, los alcoholes y ésteres responsables del aroma característicos de maracuyá disminuyeron su concentración (16 %) a 45 ° C. Las condiciones óptimas para obtener un jugo de maracuyá microbiológicamente seguro, conservando su composición aromática, SST y pH se determinaron a 200 MPa, 35 ° C y 10 min.