bluuebunny/crossref_metadata_2025 huggingface dataset:
МЕТОДОЛОГИЯ РАСЧЕТА КОМБИНИРОВАННОЙ СИСТЕМЫ УРАВНОВЕШИВАНИЯ ПРИВОДА ШТАНГОВОЙ УСТАНОВКИ ПРИ КОЛЕБАНИЯХ ДИНАМИЧЕСКОГО УРОВНЯ
Authors: Уразаков Камил Рахматуллович , Тугунов Павел Михайлович
Published: November 2022

Актуальность. Уравновешенность привода является одним из ключевых факторов, определяющих эффективность эксплуатации скважин установками скважинных штанговых насосов. Это имеет особое значение для малодебитных скважин, которые работают на пределе рентабельности, вследствие низких дебитов и высокого энергопотребления. Перевод их на периодический режим приводит к системным колебаниям динамического уровня. Изменение динамического уровня обуславливает изменение нагрузок, действующих на штанговую колонну и балансирный привод. Для сохранения уравновешенности станка-качалки в этих условиях необходима корректировка положения уравновешивающих контргрузов. Цель: анализ автоматической системы уравновешивания станка-качалки, включающей дополнительный балансирный контргруз, с возможностью автоматического перемещения, положение которого вдоль балансира регулируется за счет вспомогательного электродвигателя; разработка методологии расчета параметров автоматической системы динамического уравновешивания, позволяющей проводить расчеты механизма выравнивания нагрузок. Методы: экспресс-метод для оценки параметров контргрузов, учитывающий статические составляющие нагрузок на плунжер и привод, и детальный метод с учетом динамических составляющих нагрузок. Результаты. Показано, что оба метода расчета дают приемлемые результаты с точки зрения обеспечения минимального крутящего момента на кривошипном валу, выравнивания степени загрузки вала и электродвигателя в течение цикла откачки. Выводы. Установлено, что требуемый (для поддержания динамической уравновешенности) вес дополнительного балансирного контргруза в значительной степени возрастает по мере роста разницы динамического уровня в процессе откачки и снижается при увеличении «длины хода» контргруза вдоль балансира. Плечо кривошипного груза при увеличении веса дополнительного балансирного контргруза уменьшается вследствие снижения вклада кривошипной составляющей в системе комбинированного уравновешивания.
ТЕХНИКО-ЭКОНОМИЧЕСКАЯ МОДЕЛЬ АВТОНОМНОГО КОМПЛЕКСА ПО ПРОИЗВОДСТВУ «ЗЕЛЁНОГО» ВОДОРОДА И ЕЁ АПРОБАЦИЯ НА ПРИМЕРЕ МОНГОЛИИ И ЯПОНИИ
Authors: Попов Сергей Петрович , Шакиров Владислав Альбертович , Колосницын Антон Васильевич , Максакова Дарья Владимировна , Балдынов Олег Александрович
Published: November 2022

Актуальность. Представлена технико-экономическая модель комплекса по производству сжиженного водорода с энергоснабжением исключительно от возобновляемых источников энергии. Модель позволяет проводить сравнение технико-экономических показателей производства «зелёного» сжиженного водорода в различных локациях, учитывая их природно-климатические и технико-экономические условия. Особенностью предлагаемой модели является рассмотрение основных технологических процессов производства, преобразования и хранения водорода с учетом годового почасового профиля возможной генерации энергии возобновляемыми источниками и графика отгрузки сжиженного водорода в качестве товарной продукции. Использование модели актуально на стадии предпроектных исследований по созданию водородных производств в регионах, имеющих высокий потенциал ВИЭ, но при этом удаленных от электроэнергетической инфраструктуры; позволит повысить обоснованность оценок для принятия инвестиционных решений. Цель: разработать технико-экономическую модель такого комплекса и осуществить проверку её работоспособности на примере оценки нормированной стоимости производства «зелёного» сжиженного водорода для выбранных локаций в Монголии и Японии. Объекты: автономный комплекс по производству «зелёного» водорода. Методы. Основу модели составляет оптимизационная задача математического программирования, решение которой позволяет определить уровень и структуру затрат на производство сжиженного водорода с использованием солнечной и ветровой энергии. Результаты. Для проверки работоспособности модели были получены сравнительные оценки нормированной стоимости производства товарной продукции – 10 тыс. т/год сжиженного «зелёного» водорода для локаций в Монголии (восточное побережье оз. Хубсугул) и Японии (прибрежные районы префектуры Ямагата), составляющие соответственно 10,8 и 13,4 $ /кг.
РАЗРАБОТКА МЕТОДИКИ СИНТЕЗА ФОСФАТА АЛЮМИНИЯ И ВОДОРОДА ИЗ АЛЮМИНИЕВОГО ЛОМА
Authors: Новиков Александр Станиславович , Мостовщиков Андрей Владимирович
Published: November 2022

Актуальность исследования обусловлена необходимостью разработки новых методик получения сырья из алюминиевого лома. Данное направление при применении различных интенсифицирующих воздействий позволяет реализовать процесс синтеза сырья из металлолома в ресурсосберегающем режиме, минимизирующем объемы затрат на подготовку исходного сырья, последующие переработку и производство. Цель: изучить физико-химические закономерности процесса переработки алюминиевых отходов в поле ультразвука в кислотной среде, предложить механизм этого процесса и на основании установленных закономерностей и предложенного механизма разработать методику переработки алюминиевых отходов с получением востребованных в промышленности продуктов реакции. Объекты: образцы алюминиевых отходов в виде пластинок и стружки. Методы: волюмометрия, сонохимический синтез, оценка и анализ кинетических кривых процесса при разных температурах, рентгенофазовый анализ. Результаты. Проведен анализ кинетических кривых, рассчитаны константы скоростей процесса при различных температурах, определён порядок химической реакции. По рассчитанной энергии активации процесса дана характеристика кинетической области процесса. Согласно полученным данным, воздействие на систему ультразвуком способствовало увеличению скорости химического процесса на 90 % при 303 К; на 5 % при 313 К. Сам процесс начинался в течение 10…30 секунд и завершался в течение нескольких минут, что подтверждает возможность переработки алюминиевых отходов с помощью кислотных растворов при невысоких температурах. Полученный водород можно использовать в водородной энергетике, поскольку он является единственным газообразным продуктом реакции, что снимает необходимость в его очистке перед транспортировкой. Синтезированный в ходе реакции раствор хлорида алюминия можно использовать при очистке сточных вод, обработке древесины, производстве антиперспирантов, а также перевести в фосфат или гидроксид алюминия и использовать в керамической промышленности.
Croissance, Recrutement, Mortalité et Exploitation de Bagrus Bajad (Fabricius, 1775, Bagridae) au Lac Albert, République Démocratique du Congo (RDC)
Authors: Matunguru Joseph M. , Okito Gabriel M. , Lutili Franck , Mulongaibalu Mbalassa , Nshombo Venant M. , Micha Jean-Claude , Ntakimazi Gaspard
Published: November 2022

Cette étude présente les résultats des analyses des paramètres de croissance, de recrutement, de mortalité et d’exploitation de la population de Bagrus bajad espèce cible dans les pêcheries du Sud-ouest du Lac Albert. Ainsi, la longueur asymptotique (L∞) des individus capturés a été de 73,5 cm et le coefficient de croissance K était de 10 an-1. Chez les 520 spécimens des poissons, la période de plus grands recrutements a été notée durant les mois de janvier, Mai, Juillet, Novembre-Décembre. Le taux de mortalité naturelle (1,48 an-1) a été supérieur au taux de mortalité par pêche (0,516 an-1), la mortalité totale étant ainsi 1,66 an-1 pour un taux d’exploitation de 31%. Les valeurs de la taille de première capture ont été comprise entre 42,0 cm et 51,6 cm. Le taux actuel d’exploitation est largement inférieur au taux maximal d’exploitation de cette espèce. Les tailles les plus critiques d’exploitation ont été notées chez les individus (c= 0,050), avec en plus des conditions optimales d’exploitation relativement minimales.
„Nem tudom, hogyan lehet rájuk hatást gyakorolni...” Pedagógusok a roma tanulók oktatásáról
Authors: Jakab Judit
Published: November 2022

Tanulmányunkban a roma tanulók tömeges iskolai jelenlétének egyik sajátos vonatkozásával foglalkozunk: azzal, hogy a székelyföldi társadalmi környezet milyen kontextust teremt a roma tanulók beiskolázásának. A térségi társadalmi kontextus jellemzőinek felvázolását követően a térségben roma tanulókat oktató pedagógusok körében végzett interjús kutatás anyagai alapján azokat a pedagógusi percepciókat mutatjuk be, amelyek számukra a tanulók kulturális másságával való szembesülés kihívásait hordozzák. Kutatási eredményeink azt mutatják, hogy a roma többségű osztályokban tanító pedagógus munkájának egy jelentős része nem az oktatásra, hanem a kulturális másság kezelésre irányul. A székelyföldi térség sajátos társadalmi viszonyai közepette a roma gyerekek oktatásában a szociális jellegű megközelítés (mélyszegénység) és a módszertani megoldások keresése mellett célravezető figyelmet szentelni az oktatási folyamatot ennél tágabb, ugyanakkor mélyebb szinten keretező társadalmi viszonyoknak is.
Bedrohte Sprache? Die Haltung niederländischen Sprachwissenschaftler gegenüber den großen Nachbarsprachen im Laufe der Jahrhunderte
Authors: Engelbrecht Wilken
Published: November 2022

This contribution discusses the problem of the alleged threat to the Dutch language by the three surrounding major languages French, German and English. After an introduction on when one can speak of Dutch as an independent language, the paper looks at how the Dutch themselves have defined their language and from when on there is a clear Dutch language community. In the following sections, the historical struggle against French, German and English infl uences is examined in its historical order. For practical reasons, the contribution is limited to the situation on the territory of the Netherlands.
Over veelvoudige tangconstructies in de Nederlandse zin
Authors: Jarosińska Ewa
Published: November 2022

The article presents the syntactic phenomenon of discontinuous structures in Dutch, such as separable verbs and pronominal adverbs. They pose many difficulties for Polish students of Dutch. The article explains more thoroughly the types of separable constructions and the conventions that lead to their creation. Special attention is directed towards cases where the discontinuous forms interlock so that they come to a ‘clash’ of prepositions, e.g. Daar komt het op aan or Jacobs haalt het voorbeeld aan van de academische ziekenhuizen van Nijmegen en Duitsland. This accumulation of prepositions often leads to misunderstandings in the right tone of voice and Polish students’ interpretation of sentences. The correct formation of the interlocking structures is one of the most challenging skills with which the students learning Dutch will be confronted.
Fatores geradores de satisfação e insatisfação na profissão enfermagem
Authors:   Universidade Federal de São Carlos, Lima Janaína Ferreira de , Silva Vanizia Regina De Pádua Antunes da ,   Centro de Ensino
Published: November 2022

Introdução: Desde os tempos primórdios, o trabalho exerce um papel importante na formação dos valores básicos do ser humano. O mundo do trabalho sofreu alterações significativas. Percebemos o desaparecimento de trabalhos estáveis e, simultaneamente, aparecem novas tecnologias e formas inovadoras de organização do trabalho. No contexto da última crise do capital, nas últimas décadas, ao mesmo tempo em que milhares de pessoas sofrem pela falta de um emprego, outras sofrem pelo fato de terem que trabalhar excessivamente. Objetivo: O presente estudo tem teve como objetivo analisar a satisfação profissional da equipe de enfermagem atuante em unidade terapia intensiva (UTI). Método: Trata-se de uma Revisão Interativa (RI). A Seleção do referencial teórico fora realizada nos meses de setembro a janeiro de 2022. Resultados: Entende-se que a motivação no trabalho da equipe de enfermagem sofre influência de diversos fatores. Como fatores de satisfação profissional são descritos: Relacionamento com a equipe; gostar do que faz e vínculo com os pacientes, além da autonomia. Referente ao domínio autonomia, os enfermeiros consideram como um aspecto importante no seu processo de trabalho e que interfere positivamente na prática profissional, resultando qualidade do cuidado e fatores geradores de insatisfação são: Remuneração, alta demanda de atividades, diminuição de recursos humanos carga horária excessiva. A equipe de enfermagem atuante na UTI esta sobrecarregada e afirma que em instituições hospitalares o número de profissionais é reduzido, confrontando a classificação de necessidades de cuidados e resultando em maior sobrecarga, estresse, conflito de funções, desvalorização profissional e más condições de trabalho. Conclusão: Os estudos sobre satisfação profissional na enfermagem ainda são escassos, principalmente em Unidade Terapia Intensivos (UTI), o que evidencia a necessidade de demais pesquisas sobre a temática.
Capacidade funcional de mulheres com câncer ginecológico e mamário hospitalizadas
Authors:   Universidade Estadual de Campinas, Almeida Lorrayne Karolina de , Godoy Gabriela Alves ,   Universidade Estadual de Campinas, Balaminut Talita ,   Universidade Estadual de Campinas
Published: November 2022

Introdução: O declínio da capacidade funcional é frequente em pacientes oncológicos, afetando a independência na realização das atividades básicas e de vida diária. Objetivo: Analisar a capacidade funcional de mulheres com câncer ginecológico e/ou mamário hospitalizadas em unidades de oncologia, segundo a Escala de Desempenho de Karnofsky. Método: Estudo descritivo, longitudinal, prospectivo e quantitativo realizado nas unidades oncológicas clínica e cirúrgica de um hospital da mulher. Participaram 231 mulheres internadas com 18 anos ou mais e tempo de permanência mínima de 24 horas na unidade. Os dados foram coletados por um instrumento de caracterização e a Escala de Desempenho de Karnofsky (escore de 0% a 100%), aplicada na admissão e dentro de 24 horas após qualquer mudança clínica significativa durante a internação. A análise dos dados foi descritiva e inferencial, comparando variáveis sociodemográficas e clínicas com o escore da Escala de Desempenho de Karnofsky (teste Mann-Whitney). Aprovado pelo Comitê de Ética em Pesquisa sob CAAE: 49160821.3.0000.5404, parecer: 4.910.826. Resultados: A capacidade funcional das mulheres hospitalizadas apresentou na admissão uma média do escore de 70,91% (±20,40), apontando que são incapazes para seguir com atividades normais ou trabalho ativo, porém conseguem fazer o autocuidado. A média do escore também diminuiu ao longo da hospitalização, conforme as alterações clínicas mais relevantes. A maior capacidade funcional foi relacionada à mulheres em tratamento cirúrgico, com câncer de mama, com menos de 60 anos, com companheiro, sem comorbidades associadas e sem a presença de metástase. Conclusão: Conhecer a capacidade funcional de mulheres internadas com câncer de mama e/ou ginecológico pode contribuir para o processo de cuidar da equipe de saúde durante a hospitalização das mesmas e nortear intervenções que previnam ou reduzam o comprometimento funcional, além de promover ações que melhorem a qualidade de vida destas mulheres.
Plano de segurança em sistemas de abastecimento de água: limitações e tendências no meio urbano
Authors:   Universidade Federal de São Carlos, Ventura Katia Sakihama , Sardinha Aline Souza ,   Universidade Federal do Pará, Rezende Danilo ,   Prefeitura Municipal de Ribeirão Preto
Published: November 2022

The newest model of the Water Security Plan (WSP) has been piloted in some countries to warn sanitation service managers about the risks to climate resilience (CR). The bibliometric analysis was performed (2015 to 2022) on the Web of Science database with the string "water safety, climate, risk, drinking water", operator AND in "all fields", merging complete records and quoting references from Vosviewer software. The results identified 65 international articles on WSP-CR, and six of them were selected in this analysis. Most of the available studies do not address threats from climate change in sanitation systems and river basins. The challenges of the WSP-CR applications are: i) data reliability, ii) the feasibility of implementing the model and the existence of few studies on this topic, and, iii) the complexity of the model in water supply systems, especially in small communities. Among the opportunities, the following stand out: the implementation of the plan with a sustainability and urban resilience bias leads to a better performance of the long-term water supply system to the public manager due to multidisciplinary aspects of decision makers.
Pioneirismo da Câmara Técnica de Saúde Ambiental do Comitê PCJ na segurança da água
Authors:   Câmara Técnica de Saúde Ambiental, Souza Roseane Maria Garcia Lopes de , Coneglian Cassiana Maria Reganhan ,   Universidade Estadual de Campinas
Published: November 2022

Sanitation is an essential human right for quality of life and health guarantee for every citizen, regardless of their socioeconomic condition. Everyone has the right to have access to an adequate supply of safe and drinking water. Safe water cannot be sustained only by monitoring its quality, it is necessary to guarantee the supply of water on a continuous basis. The Water Safety Plan carries out a systematic assessment that identifies and characterizes the hazards and risks of water supply systems for human consumption, from the source to the point of delivery, aiming at a preventive risk approach to help guarantee the security of water served to the population, establishing control measures and thereby reducing the burden of diseases related to water supply. The Water Safety Plan is an important instrument for identifying possible deficiencies in the water supply system, organizing and structuring it to minimize the chance of incidents. The Environmental Health Technical Chamber (CT-SAM) of the Piracicaba, Capivari and Jundiaí River Basin Committee (PCJ) has been a pioneer in water security, carrying out actions in the municipalities in order to encourage the implementation of Water Safety Plans to ensure the implementation of the Environmental Health Policy, approved within the scope of the PCJ Committee's area of ??activity.
Code-Mixing in WhatsApp Group Discussions of Online English Classes
Authors: Rahmawati Lina , Sholeha Mar'atus , Rizka Haira
Published: November 2022

The COVID-19 pandemic has forced the educational world to switch from offline classes to online classes. Limited access to the internet has encouraged many people to use WhatsApp to teach instead of academic platforms. Although WhatsApp is not designed for educational purposes, many teachers prefer using it to conduct online discussions, including in English classes. This new model of communication using WhatsApp for English classes has resulted in the interesting phenomenon of code-mixing. This paper aims to investigate the types and functions of code-mixing used in WhatsApp groups of online English classes. This study employed a qualitative method. The sample of this research was conversations between the lecturers and students in WhatsApp group chats of online English classes during the pandemic. The data were collected through observation. The collected data were then analyzed by using textual analysis. This study revealed three types of code-mixing used in online English classes on WhatsApp group chats: insertion, alternation, and congruent lexicalization. Next, this study found five functions of code-mixing in online English classes on WhatsApp group chats: quotation, address specification, interjection, message qualification, personalization, and objectification. Address specification, personalization, and objection were dominantly found because specific sentences frequently refer to people, things, or arguments during discussions on WhatsApp group chats.
Fiqh Bi’ah Urgensi Teologi Al-Quran
Authors: Istiani Mariatul , Muhammad Roy Purwanto
Published: November 2022

One of the global problems faced by humans is the environment. The worsening global environmental conditions are inseparable from various problems ranging from garbage, logging, and air pollution due to industrial or transportation activities as the main cause of the environmental crisis. The basic principle of ecology is to maintain, preserve, utilize and preserve the environment for the lives of future generations. The idea of ecology and environmental sovereignty in the context of power is related between God, man and nature. The results of this study indicate that the Qur'an has a broad scope of knowledge, including ecology. Although not explicitly mentioned in the Qur'an, the Qur'an clearly explains the fundamental values of the environment (ecology). But with the changes and developments of an increasingly advanced era it turns out to be inversely proportional to the quality of nature and the environment. The rise of natural disasters that occurred lately is none other than the act of a greedy man and not aware of his existence and responsibilities on earth, if humans can understand well what has been interpreted by the Qur'an, then it is not impossible the relationship of God, humans and nature that is almost cracked can be restored.
Micronutrient Biosynthesis Potential of Spontaneous Grain Fermentation Microbiomes
Authors: Dania Margaret I. , Faraji Bahram , Wachira James
Published: November 2022

Fermented foods play an important role in the human diet and particularly so in under-resourced environments where cold preservation is not attainable due to irregular supply of electricity. Fermented foods are reported to support gut health by contributing probiotics and the purpose of this study was to investigate the microbial diversity and metabolic potential of spontaneous millet fermentation. The literature in the field was reviewed and analysis conducted on publicly available Sequence Read Archive (SRA) datasets. Quality analysis was performed with FastQC, and operational taxonomic units (OTUs) generated using Quantitative Insights Into Microbial Ecology (QIIME2) and Divisive Amplicon Denoising Algorithm (DADA2) pipeline with Greengenes as the reference database. Metagenomics and pathways analysis were performed with Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt2). Statistical analysis and visualization were accomplished with Statistical Analysis of Metagenomic Profiles (STAMP). At the family taxonomic level, there were significant differences in the relative abundances of bacteria involved in the spontaneous fermentation of millet namely, Lactobacillaceae, Leuconostocaceae, and Clostridiaceae in one dataset. The incidence of Lactobacillaceae and Bifidobacteriaceae suggest the probiotic characteristic of fermented millet. The datasets were collected with fermentations mediated by autochthonous microorganisms and the presence of some potential pathogens such as Enterobacteriaceae, Clostridiaceae, Aeromonadaceae, Microbacteiaceae, Pseudomonadaceae, and Neisseriaceae suggest the need for standardization of fermentation approaches. The genomes show the potential to synthesize metabolites such as vitamins suggesting that the respective fermented foods can be further optimized to enhance nutritional benefits.
SamPy: A New Python Library for Stochastic Spatial Agent-Based Modeling in Epidemiology of Infectious Diseases
Authors: Viard Francois , Acheson Emily , Allibert Agathe , Sauve Caroline , Leighton Patrick
Published: November 2022

Agent-based models (ABMs) are computational models for simulating the actions and interactions of autonomous agents in time and space. These models allow users to simulate the complex interactions between individual agents and the landscapes they inhabit and are increasingly used in epidemiology to understand complex phenomena and make predictions. However, as the complexity of the simulated systems increases, notably when disease control interventions are considered, model exibility and processing speed can become limiting. Here we introduce SamPy, an open-source Python library for stochastic agent-based modeling of epidemics. SamPy is a modular toolkit for model development, providing adaptable modules that capture host movement, disease dynamics, and disease control interventions. Memory optimization and design provide high computational eciency allowing modelling of large, spatially-explicit populations of agents over extensive geograph- ical areas. In this article, we demonstrate the high exibility and processing speed of this new library. The version of SamPy considered in this paper is available at https://github.com/sampy-project/sampy-paper .
Influencing Factors for the Implementation of School-based Interventions Promoting Obesity Prevention Behaviors in Children with Low Socioeconomic Status: A Systematic Review
Authors: Butscher Friederike , Ellinger Jan , Singer Monika , Mall Christoph
Published: November 2022

Background: Health inequity (HI) remains a major challenge in public health. Improving the health of children with low socioeconomic status (SES) can help to reduce overall HI in children. Childhood obesity is a global problem, entailing several adverse health effects. It is crucial to assess influencing factors for adoption, implementation and sustainment of interventions. This review aims to identify articles reporting about influencing factors for the implementation of school-based interventions promoting obesity prevention behaviors in children with low SES. It aims to critically appraise the articles’ quality, assess influencing factors, categorize and evaluate them, and to discuss possible implications. Methods: A systematic search was conducted in 7 databases with the following main inclusion criteria: 1) school-based interventions and 2) target group aged 5–14 years. The Consolidated Framework for Implementation Research, its five domains (intervention characteristics, inner setting, outer setting, characteristics of individuals, process) along with 39 constructs within these domains were used to deductively analyze the data. We grouped the articles with regard to the characteristics of the interventions in simple and complex interventions. For each domain, and for the groups of simple and complex interventions, the most commonly reported influencing factors are identified. Results: 6452 articles were screened, and 16 met all eligibility criteria. Included articles applied mixed methods (n=10), qualitative (n=5) and quantitative design (n=1). Of these, five were considered to report simple interventions and eleven were considered to report complex interventions. In total, 295 influencing factors were assessed. Aspects of the inner setting were reported in every study, aspects of the outer setting were the least reported domain, and in the group of simple interventions not reported at all. In the inner setting, most reported influencing factors were time (n=7), scheduling (n=6) and communication (n=6). Conclusion: This review found a wide range of influencing factors for implementation. Most important influencing factors need to be assessed for every setting. Including all stakeholders involved in the implementation process enhances the prioritization of the most important influencing factors for the specific setting. More empirical research and practical guidance are needed to promote obesity prevention behaviors among children with low SES.
Cellular Senescence, a Novel Area of Investigation for Metastatic Diseases
Authors: Faggioli Francesca , Velarde Micheal , Wiley Christopher D.
Published: November 2022

Metastasis is a systemic condition and the major challenge among cancer types, as it can lead to multiorgan vulnerability. Recently, attention has been drawn to cellular senescence, a complex stress response condition, as a factor implicated in metastatic dissemination and outgrowth. Here, we examine the current knowledge of the features required for cells to invade and colonize secondary organs and how senescent cells can contribute to this process. First, we described the role of senescence in placentation, itself an invasive process which has been linked to higher rates of invasive cancers. Second, we describe how senescent cells can contribute to metastatic dissemination and colonization. Third, we discuss several metabolic adaptations by which senescent cells could promote cancer survival along the metastatic journey. In conclusion, we posit that targeting cellular senescence may have a potential therapeutic efficacy to limit metastasis formation.
Development and Comparison of Regional/Seasonal Wave Scatter Table using Hindcast Data for Simplified Operational Measures of Ships
Authors: Mangalathu Raj Samuel , Enshaei Hossein , Abdussamie Nagi
Published: November 2022

The operational measure (OM) of the Second-Generation Intact Stability Criteria (SGISC) is the initial step toward the design of a performance-based dynamic stability assessment of the ship by considering both the vessel’s operation, loading condition and weather parameters. The SGISC recommends the standard wave scatter table (WST) for the environmental data, an indefinite requirement for a simplified assessment pathway, which provides the probability of wave occurrence. The existing standard WST was developed based on the North Atlantic Ocean. This study aims to identify the discrepancy in the probability of wave occurrence in the IMO-recommended WST when compared with developed hindcast WST for smaller regions of the North Atlantic Ocean for the application of SGISC. The significant difference in the existing standard WST is identified when compared with hindcast data, especially across different seasons. A case study of OM on the C11 class post-Panamax container ship for excessive acceleration is provided to better represent the study. The identified limitation limits the use of standard WST in ship stability assessment. The study recommends using hindcast-based WST for SGISC applications that are region and season based. This recommendation is beneficial in improving the safety assessment by OM, given the data is reliable and available for the season and region-specific, and hence the accuracy of the ship stability can be improved while using for the SGISC OM assessment. Further, it makes the WST adhere to the actual framework of the SGISC, i.e., using existing environmental data for design assessment and improving the simplified stability analysis.
Representation and content in student's exam note sheets
Authors: Santosa Ignatius Edi
Published: November 2022

Various forms of representation are used to understand physics concepts. This study aims to reveal the representations used by students in summarizing their physics teaching materials. The observed representations include mathematical equations, verbal statements and graphs. The participants were students who attended lectures in two academic years, namely 2016 and 2018. Students were permitted to freely write a summary of lecture material that would be used as resources during the exam. The research investigated the types of representations used and their percentages. In addition, the content in the summary was also taken into consideration. The results showed that the representation of mathematical equations or formulas, verbal explanations and graphs were used by 100%, 97% and 40% of the total students, respectively. This finding is also reflected in the percentage of paper area used in the summary; the uses of formulas are 60%, verbal explanations are 32.5% and the remaining 4.2% are graphs. Most note sheets contain almost all of teaching material. This studentsâ€™ tendency should be considered for teaching strategy.
Development of 2-D augmented reality integrated physics e-book to improve students' problem-solving skills
Authors: Nugraheni Veronika Yeni Setyo Tri , Mundilarto Mundilarto
Published: November 2022

This study aims to produce an augmented reality integrated e-book that is feasible to improve the problem-solving skills of 11th graders; identify the improvement of 11th graders problem-solving skills after using the augmented reality integrated e-book. Problem-solving as a way of obtaining solutions to difficulties is divided into four indicators, which are: understanding the problem, making plans, implementing plans, and reviewing solutions. Data collection techniques consist of tests, questionnaires, observations, and documentation using instruments that support the Research and Development (R&D) technique with a 4D model. Research subjects were selected by simple random sampling with 34 students of 11th graders. In this study, questionnaires were used for validation, observations were made to determine the condition of students, and documentation was used as evidence in conducting research. The data were analyzed quantitatively based on the results of the validation and analysis of pretest and posttest items. The results showed that the augmented reality integrated e-book is feasible to use based on the results of validation using the average value conducted by a very high category validator, and the validation value obtained is 3.79. The improvement of problem-solving skills was analyzed using Normalized Gain, and the improvement of problem-solving skills got a score of 0.8 in the high category.
Assessing students' factual, conceptual, and procedural knowledge of Newton's Laws of motion
Authors: Cashata Zerihun Anibo , Seyoum Desta Gebeyehu , Alemu Shemelise Assefa
Published: November 2022

The study aims to assess the difficulties in factual knowledge, conceptual understanding, and procedural knowledge of physics pre-service teachers on Newtonâ€™s laws of motion. The study was conducted in four colleges of teacher education located in the southern regions of Ethiopia .This study employed descriptive survey methods. For data collection, 14- Factual-Knowledge Test, 19- Conceptual understanding test and 3-open ended questionariesâ€™ were used. Descriptive statics such as means, standard deviations, percentages, frequencies, and Minnesota Assessment of problem solving Rubric are used for written solution, where 136 students were involved in the quantitative part. They were consulted in the qualitative part of this study. The findings reveal a lack of conceptual understanding (61 percent) and procedural knowledge among pre-service physics teachers. This is evident in their low performance in the category or indicator dimensions of using, determining, and understanding problems (56 percent), in writing laws and principles (61%), and in determining the correct answer to problems (59 percent). A reasonable recommendation is given to solve the problem so that the pre-service physics teacher has adequate conceptual and procedural knowledge.
How can interactive multimedia direct instruction model improve student cognitive learning outcomes?
Authors: Malik Adam , Wandira Ayu , Kuntadi Dedi , Nugraha Andi Rohendi
Published: November 2022

This study aims to determine the implementation of the direct instruction model based on interactive multimedia and the lecture model as well as the differences in the improvement of students' cognitive learning outcomes after the two models are applied to the material of effort and energy. The method in this study uses a quasi-experimental method, with a Noneequivalent Control Group design. The research sample consisted of two classes, namely class X-IPA 1 as the experimental class and class X-IPA 2 as the control class, each consisting of 20 students. Data on the implementation of learning were obtain-ed through observation sheets and students' cognitive learning outcomes were obtained through multiple-choice tests. The data analysis technique used the calculation of the observation sheet, N-gain, and t-test. The results showed that the average percentage of all meetings on the implementation of learning in the experimental class was 82.78% with very good interpretation and 71.85% in the control class with good interpretation. The increase in students' cognitive learning outcomes in the experimental class was 0.58 in the medium category and in the control class was 0.29 in the low category. The results of hypothesis testing using an independent sample t-test showed the value of tcount (3.56) > ttable (2.02). The results showed that there were differences in the cognitive learning outcomes of students who studied with an interactive multimedia-based direct instruction model and lecture model. Thus, the interactive multimedia-based direct instruction model is better in improving students' cognitive learning outcomes in the matter of effort and energy. This study could be implemented in schools with proper or non-proper laboratory facilities for supporting the learning of physics.
Fractals and music
Authors: Pothiyodath Nishanth , Murkoth Udayanandan Kandoth
Published: November 2022

Many natural phenomena we find in our surroundings, are fractals.  Studying and learning about fractals in classrooms is always a challenge for both teachers and students. We here show that the sound of musical instruments can be used as a good resource in the laboratory to study fractals. Measurement of fractal dimension which indicates how much fractal content is there, is always uncomfortable, because of the size of the objects like coastlines and mountains. A simple fractal source is always desirable in laboratories. Music serves to be a very simple and effective source for fractal dimension measurement. In this paper, we are suggesting that music which has an inherent fractal nature can be used as an object in classrooms to measure fractal dimensions. To find the fractal dimension we used the box-counting method. We studied the sound produced by different stringed instruments and some common noises. For good musical sound, the fractal dimension obtained is around 1.6882.
The Potential of Private Health Insurance Ownership Based on the 2018-2020 National Socioeconomic Survey Data
Authors: Hasan Arief Rosyid , Bachtiar Adang , Candi Cicilya
Published: November 2022

In 2014, the Indonesian Government introduced a social security program in the health sector. However, Indonesia’s out-of-pocket expenses remain high due to a lack of public interest in National Health Insurance services. Financing expensive health services with high out-of-pocket expenses has the potential to cause poverty. Private health insurance is considered a solution to this problem. This study aimed to determine the socioeconomic factors of private health insurance ownership and its potential in Indonesia. This study used secondary data from the 2018, 2019, and 2020 National Socioeconomic Surveys. Logistic regression analysis showed that the variables related to private health insurance ownership were age, sex, education, economic status, employment status, marital status, household status, and location of residence. The most dominant variable in 2018 was per capita expenditure (economic status), while education was the most dominant variable in 2019 and 2020. The result of this study can be used to formulate a strategy for increasing participation in private health insurance. The socioeconomic health sector should use this information to target specific markets for private health insurance.
Estrategias de marketing y desarrollo de mercado en una empresa de inyectores, La Victoria, Lima, Perú, 2021
Authors:   , Lopez Casavilca Miguel Angel Fernando , Peña Vargas Leslye Xiomara , Sandoval Quilcas Kevin Ricardo , Silva Blas Cerely Rubi
Published: November 2022

El mercado automotriz, los inyectores y accesorios de vehículos son elementos que se utilizan en el día a día, por ende, siempre habrá un mercado disponible. Siendo así, uno de los motivos por los cuales decidimos evaluar la empresa, ¨Jhonatan Diesel¨, teniendo como objetivo la presente tesis, el análisis respecto a las estrategias de marketing que emplean, así como el mercado donde se desarrollan, estando ubicado en el distrito La Victoria, LIMA. Para el cual se evaluará la empresa en su totalidad, sus medios de pago, las estrategias de marketing que emplean, su método de pedidos de productos, inventario. Por otro lado, a través del estudio realizado a la empresa, se implementará dos herramientas de marketing digital, es decir durante el presente trabajo encontraran información de la situación actual y nuestra propuesta de mejora con los datos de lo que se necesitará, tanto como la inversión a realizar. Finalmente, nuestro trabajo de investigación abordará análisis del entorno de la empresa, sondeo del mercado, visión, misión, objetivos, flujo de caja, análisis de rentabilidad, balance general, evaluar y replantear para su mejor desarrollo.
Biorremediación de suelos contaminados con gasolina de 95 octanos utilizando estiércol caprino
Authors:   , Berrios Moron Katia Dunie
Published: November 2022

A la fecha, en el Perú existen conflictos socioambientales por derrames de hidrocarburos, entre otras causas antropogénicas que generan la contaminación del suelo, y con ello un aumento del riesgo a la salud humana y de los ecosistemas. La gasolina de 95 octanos (G95) es un tipo de hidrocarburo que se combina con aditivos para mantener su octanaje y calidad, el cual lo convierte persistente en el tiempo, por lo que el presente estudio evaluó la capacidad de biorremediación del estiércol caprino (EC) en el proceso de contaminación de suelos con G95, a fin de presentar una alternativa sostenible de remediación por su contenido de nutrientes que aporta al suelo. Se diseñó un experimento con concentraciones conocidas de G95 y EC al 5% y 20% (w/w) en dichos tratamientos, con los objetivos de evaluar el contenido óptimo de EC y el comportamiento de los macronutrientes (N, P y K). Los resultados indicaron que los tratamientos redujeron significativamente la concentración inicial de G95, obteniendo mayor remoción en los tratamientos con EC 20%, que representó una remoción de 97.98±0.35%, Variación de Nitrógeno de 56.32±2.55 mg kg s-1, Variación de Fosforo de 80.89±2.48 mg/kg s-1, y Variación de Potasio de 80.99±2.40 mg/kg s-1, Se concluyó que la aplicación de sustratos orgánicos como EC remueven hidrocarburos como la G95, siendo el tratamiento EC 20% el más recomendable de utilizar, argumentando que el EC funciona como un agente descontaminante de suelos con G95 de forma práctica y funcional.
A Comparative Study of Turbulence in Stirred Reactors and Pipelines for a Sour Gas-Oil-Water System, Used in Hydrate Formation Predictions and Flow Assurance Considerations
Authors: Sadeghi Mehdi , Taheri Rizi Zahra , Mohammad-Taheri Mahboobeh , Tohidi Bahman
Published: November 2022

Computational fluid dynamics (CFD) and experimental studies were applied to evaluate a novel turbulence-based scaleup method capable of matching systems with different geometries. This study specializes in determining optimum agitation speed in laboratory reactors used for flow assurance studies to match the hydrodynamic condition of three-phase flow in pipelines. Turbulence parameters were calculated using CFD for a laboratory-scale reactor at various mixing speeds and a real large-scale pipe. The calculations for the pipeline matched the reactor working at 590 rev/min, identifying the ideal mixing speed, the speed at which the reactor is closest to the pipeline regarding the fluid mixing and turbulence. This finding was compared with flow regime and mixing data of both geometries in the literature and finally confirmed by experiments. It was empirically proved that a turbulence analysis based on geometry-independent parameters could link systems’ mixing conditions with different scales and geometries.
An Efficient and Straightforward Procedure for Rapid Investigation of Reservoir Compartmentalization by Fourier Transform Infrared Spectroscopy of Asphaltenes
Authors: Asemani Morteza , Rabbani Ahmad Reza , Sarafdokht Hashem
Published: November 2022

Reservoir compartmentalization is an essential phenomenon in the different life cycles of oilfield production. This concept is crucial for the economic assessment of field development plans because it influences future decisions and designs. Hence, early and fast identification of reservoir compartmentalization is highly appreciated in the oil industry. The routine techniques based on the light-end fraction of crude oil [e.g., gas chromatography (GC) fingerprinting] are relatively time-consuming, high-cost, and sometimes affected by secondary processes. The suggestion of an efficient, straightforward, and rapid technique for obtaining the reservoir architecture, especially in giant and supergiant fields, is an acceptable attempt in the oil industry. Although the concentration of asphaltenes shows a gradient in the reservoir, the chemical composition of these compounds is constant in connected and equilibrated reservoirs. Hence, investigation of the chemical composition of asphaltenes with a precise method for revealing subtle differences comprises the underlying of every efficient method in reservoir continuity assessment. Here, the application of the relative root-mean-square deviation (RMSD) technique on the Fourier transform infrared (FTIR) data was used to compare the structural characteristics of asphaltenes in two case studies (i.e., Ahwaz and Shadegan oil fields) from the Dezful Embayment, southwest Iran. The 12 highest difference characteristic peak ratios were determined in the studied sample suit from the calculated variations in 5 replicates of a sample. The comparison between samples was performed based on these peak ratios, and the RMSD method was used to compare the studied samples. The samples with RMSD values higher than the defined threshold were considered samples with different fingerprints, and these wells will not be communicated during production. Results showed that the Ahwaz and Shadegan fields were subjected to reservoir compartmentalization in the Bangestan reservoir. At least three compartmentalized regions have occurred in the Bangestan reservoir of the Ahwaz field, and two distinct zones are observed in this reservoir from the Shadegan field. The pressure/volume/temperature (PVT) data (i.e., fluid property and composition) and repeat formation tester (RFT) measurements confirmed that these proposed regions in the Ahwaz field are distinct and will not be communicated during production. The FTIR results in the Shadegan field were completely corroborated by PVT and RFT results and indicated two distinct zones with no flow communication during production in the Bangestan reservoir. The obtained results showed that the suggested procedure is robust, trustworthy, simple, rapid, and cost-effective for investigating reservoir compartmentalization.
Integrated Workflow for Rock Compressibility Modeling and Analysis of Laboratory Core Data
Authors: Behrenbruch Peter , Ashena Rahman
Published: November 2022

This paper gives several examples of rock compressibility laboratory testing results, and how these data are prepared as input to reservoir simulation or other applications. The final selection of rock compressibility is also compared with standard industry correlations to gauge the accuracy of such correlations in case laboratory results are not available.

A review of rock compressibility formulations and associated models is given first, including the treatment of various rock types. Second, laboratory experiments are described using the rock compressibility system (RCS) and the compressibility measurement system (CMS), and a comparison of the two is given. Based on a literature review, there is apparently no available procedure or workflow for analyzing raw compressibility data to derive meaningful interpretations, which are furthermore used in various applications. Taking the results from laboratory testing, a workflow procedure for deriving compressibility input data is outlined in detail, including the choice of ancillary data, for example, Poisson’s ratio. The workflow includes finding regression-based functions of measured pore volumes (PVs), obtaining their derivatives, and finding optimal solutions following a statistical analysis. The demonstrated workflow has been developed to be able to treat alternative laboratory experiments and results for a variety of rock types in carbonates, with regression-based compressibility correlations found. This allows safeguard against possible shortcomings and pitfalls, which are also demonstrated.

Having been implemented on real case studies, the formulation presented has been computerized, allowing for ease of data handling, comparative study, and consistency.