bluuebunny/crossref_metadata_2025 huggingface dataset:
Keperluan modul pentaksiran pendidikan kesihatan untuk guru tahap satu dalam pelaksanaan pentaksiran bilik darjah
Authors: Gengatharan Kumaran , Rahmat Azali
Published: February 2021

Kajian ini bertujuan untuk membangunkan modul pentaksiran Pendidikan Kesihatan dalam Pentaksiran Bilik Darjah (PBD) untuk guru tahap Satu. Objektif kajian adalah untuk mengenal pasti keperluan modul pentaksiran Pendidikan Kesihatan dalam pentaksiran bilik darjah dalam pengajaran guru tahap satu. Reka bentuk yang digunakan dalam kajian ini adalah reka bentuk dan pembangunan (RBP) yang mempunyai tiga fasa. Fasa pertama ialah analisis keperluan, fasa kedua ialah reka bentuk dan pembangunan dan manakala fasa ketiga ialah fasa pelaksanaan dan penilaian. Instrumen yang digunakan dalam kajian ini ialah soal selidik untuk mengetahui keperluan bahan pentaksiran iaitu modul pentaksiran untuk guru Pendidikan Kesihatan yang mengajar murid tahap satu dalam pelaksanaan PBD. Dapatan kajian menunjukkan memang terdapat keperluan untuk membangunkan modul pentaksiran bagi subjek Pendidikan Kesihatan untuk guru tahap satu dalam pelaksanaan PBD.
General multiplicative Zagreb indices of unicyclic graphs
Authors: ALFURAIDAN MONTHER R. , BALACHANDRAN SELVARAJ , VETRIK TOMAS
Published: February 2021

"General multiplicative Zagreb indices generalize well-known multiplicative Zagreb indices of
graphs. We present lower and upper bounds on the general multiplicative Zagreb indices for unicyclic graphs
with given number of vertices and diameter/number of pendant vertices/cycle of given length. All bounds are
best possible. Bounds on the classical multiplicative Zagreb indices of unicyclic graphs are corollaries of the
general results.
"
Enteral Nutrition Improves Diaphragmatic Thickness and Prognosis of Mechanically Ventilated Patients with Chronic Obstructive Pulmonary Disease
Authors: Li Shutie , Zhu Xiaobo , Wang Dawei , Li Yuanli
Published: February 2021

We examined the effect of calorie intake via enteral nutrition on diaphragmatic thickness and prognosis of mechanically ventilated patients with chronic obstructive pulmonary disease. Patients diagnosed as malnutrition were divided into observation and control groups. Both groups received conventional therapy and enteral nutrition. In the observation group, early adequate nutritional therapy was given, and the target calorie was gradually achieved within 1–3 days. In the control group, trophic feeding was provided, and the target calorie was gradually obtained after 7 days. Baseline clinical data were collected upon admission. Infection and inflammation indices, nutritional indices, and diaphragm indices were compared. Prognostic indices were compared, and the correlations of nutritional indices with diaphragmatic thickness and prognostic indices were analyzed using Pearson's analysis. The two groups had similar gender, age, heart rate, mean arterial pressure, arterial partial pressure of oxygen, acute physiology and chronic health evaluation II score, systemic inflammatory response syndrome score, multiple organ dysfunction (MODS) score, inflammation indices, nutritional indices, and diaphragmatic thickness indices upon admission (P › 0.05). Compared with values before enteral nutrition, the levels of procalcitonin, tumor necrosis factor-α, interleukin-6, and interleukin-8 significantly declined after treatment in both the groups, but greater decrease in the observation group (P ‹ 0.05). Diaphragmatic thickness at the end of expiration had no significant difference between the two groups at each time point, but diaphragmatic thickness at the end of inspiration and diaphragmatic thickening fraction significantly increased on the 7th day of enteral nutrition and after weaning, which were more significant in the observation group (P ‹ 0.05). No significant difference was found in the length of stay in intensive care unit between the two groups (P › 0.05), while the duration of mechanical ventilation, weaning success rate within 14 days, and morbidity and mortality rates of ventilator-associated pneumonia had significant differences (P ‹ 0.05). Nutritional indices were positively correlated with diaphragmatic thickness at the end of inspiration, diaphragmatic thickening fraction, duration of mechanical ventilation, and morbidity and mortality rates of ventilator-associated pneumonia, but negatively correlated with the weaning success rate within 14 days. Different enteral nutrition regimens can significantly improve the nutritional status and diaphragmatic function, inhibit the inflammatory response, shorten the duration of mechanical ventilation, and enhance the clinical treatment and prognosis effect on mechanically ventilated patients with chronic obstructive pulmonary disease
تأثير برنامج تدريبي لتطوير التحمل الخاص في بعض القدرات البدنية والوظيفية للاعبي كرة اليد لفئة الشباب
Authors: كريم مصطفى نعمت
Published: February 2021

تتجلى أهمية البحث في استخدام هذا البرنامج المقترح الذي من خلاله يقوم بتطوير التحمل الخاص لفعالية كرة اليد , وتكمن مشكلة البحث في عدم الاهتمام بالجانب التحمل، إذ لم يأخذ دوره وحجمه الحقيقيين في عملية التدريب ضمن المناهج المعدة من قبل المدربين وبأساليبها المختلفة وعلى وفق الأسلوب العلمي الصحيح، لذا ارتأى الباحثة دراسة هذه المشكلة. ويهدف البحث إلى أعداد برنامج تدريبي لتطوير التحمل الخاص في تطوير بعض القدرات البدنية والوظيفية وأداء مسكة الغطس على الرجلين لفئة المتقدمين في لعبة كرة اليد الحرة. وقد استخدم الباحثة المنهج التجريبي طريق مقارنة المجموعة التجريبية مع المجموعة الضابطة. وان أهم الاستنتاجات التي إليها الباحثة إن تدريبات التحمل الخاص ساعدت على تطوير القدرات البدنية والوظيفية لدى اللاعبين الذين تدربوا بها، وتفوقهم على تطور اللاعبين الذين تدربوا بدونها.
تأثير وسيلة تعليمية متعددة الاغراض في تعلم بعض المهارات الاساسية بكرة القدم للمبتدئين
Authors: عبود محيبس عبد الامير
Published: February 2021

هدف البحث هو التعرف على تأثير الوسيلة التعليمية (الجهاز الشامل) في تعلم بعض المهارات الاساسية بكرة القدم للمبتدئين (المناولة، الاخماد، التهديف. تكونت عينة البحث من عدد من اللاعبين المبتدئين في مدرسة هيئة تطوير العمل الرياضي / الكرخ والبالغ عددهم 24 لاعب تم تقسيمهم الى مجموعتين وبالطريقة العشوائية (12 لاعب) للمجموعة التجريبية و(2 لاعب) للمجموعة الضابطة، واستخدم الباحث 3 اختبارات مهارية للمهارات الثلاثة المبحوثة، وعملت المجموعة التجريبية مع الجهاز الشامل في حين عملت المجموعة الضابطة مع المدرب في تطبيق منهج مدرسة هيئة التطوير. واستخدم الباحث ثلاثة اختبارات مهارية مقننة لاختبار المهارات المبحوثة، وبعد اجراء التجربة الرئيسية التي أستمرت شهرين متتالين، اجرى بعدها الباحث الاختبارات البعدية، وبعد تدوين النتائج تم تبويبها بجداول واخضاعها للمعالجات الاحصائية عن طريق الحقيبة الاحصائية spss وقد أستنتج ما يلي: 1- ان الوسيلة التعليمية (الجهاز الشامل) كان ذا تاثير كبير في اكتساب وتعلم المهارات الاساسية المناولة، الاخماد، التهديف وكذلك في اختبارات الاحتفاظ، وارتفاع مستوى بعض الصفات البدنية. اما اهم التوصيات ما يلي: 2- ضرورة استخدام الوسيلة التعليمية (الجهاز الشامل) كوسيلة تعليمية مساعدة في تسهيل وتسريع التعلم للفئات العمرية.
KELM-KPCA Method for COVID-19-induced Pneumonia Detection
Authors: Sawssen Bacha , Okba Taouali , Noureeddine Liouane
Published: February 2021

The new corona virus 2019 (COVID-19) has become the most pressing issue facing mankind. Like a wildfire burning through the world, the COVID-19 disease has changed the global landscape in only one year. In this mini-review, a novel image classifier based on Kernel Extreme Learning Machine (KELM) and Kernel Principal Component Analysis (KPCA) is presented. The proposed algorithm called KELM-KPCA, aims to detect COVID-19 disease in chest radiographs, using a constrained dataset.
Educação domiciliar no Brasil: um estudo comparativo
Authors: Gualda Linda Catarina , Souza Silvana Lemes de
Published: February 2021

O presente artigo objetivou discorrer a respeito da Educação Domiciliar no Brasil, refletindo acerca de seu papel e os impactos no processo educacional nacional. O interesse recaiu na discussão de como essa modalidade se efetiva nos outros países, qual população a ela recorre, como é feita sua supervisão, entre outros fatores. Assim, tratamos a Educação Domiciliar à luz do contexto social, educacional e cultural brasileiro. Tomando como base recentes índices de desenvolvimento da Educação Básica, pretendeu-se estabelecer uma argumentação comparativa com países que praticam essa modalidade de ensino a fim de gerar reflexão acerca da temática. A abordagem comparativa partiu de levantamento bibliográfico, cuja fonte de pesquisa se deu por meio de artigos acadêmicos da área, pesquisa documental com a utilização de anuários, estatísticas, tabelas e consultas em bases de dados confiáveis (Scielo, Portal CAPES, Scholar Google, Science.gov) além de sites governamentais do setor educacional. Tendo como ponto de partida os índices de desenvolvimento do SAEB/2018 e os níveis de proficiências dos alunos dos 3º, 5º e 9º Anos do Ensino Fundamental e dos alunos do 3º Anos do Ensino Médio das Redes Públicas e Privadas de Ensino das escolas brasileiras, constatou-se que quanto aos níveis de proficiência em leitura, escrita e matemática tanto os alunos da rede pública como privada se encontram nos níveis inadequados e abaixo do básico. Nesse sentido, a situação da educação nacional, apresentada por meio dos índices das avaliações externas, demonstra que o sistema educacional brasileiro carece de novas diretrizes e práticas eficazes no sentido de proporcionarem um aprendizado realmente producente que coloque nossos aprendizes nos níveis adequados às suas séries. Pensando nisso, é preciso que a escola se reestruture no sentido de atender às novas demandas da contemporaneidade, fomentando a educação inclusiva, solidária e democrática e não que seja substituída por outros espaços de aprendizados que não alcancem esse viés de socialização. Além disso, segundo especialistas, o Brasil não está preparado para a educação domiciliar, haja vista que nessa modalidade não há mecanismos de controle suficientes para mensurar a efetividade da aprendizagem, além de outras limitações apontadas ao longo do estudo.
Um olhar fenomenológico do feminicídio na contemporaneidade
Authors: Queiroz Andressa Franceschi de , Andrade Julia Benicio de , Santos Juliana Neves Abrantes
Published: February 2021

O presente trabalho tem como principal objetivo discutir o fenômeno do feminicídio à luz do pensamento do filósofo Martin Buber. Pautamos a possibilidade de pensar o referido fenômeno em articulação com a noção de Eu-Isso .Para tanto, inicialmente, realizamos um percurso que engloba uma conceituação do feminicídio e sua ocorrência no cenário contemporâneo e uma discussão sobre as relações entre gêneros. Nas sociedades de regime patriarcal é comum ocorrerem casos de assassinatos de mulheres, seja por cônjuges, familiares ou até mesmo pessoas desconhecidas. As causas destes crimes estão relacionadas ao desejo de posse e da culpabilização pelas mulheres não cumprirem os papeis designados culturalmente. O assassinato proposital de mulheres cometido por homens consiste numa expressão grave da violência contra a mulher. Nas sociedades patriarcais, a condição de ser mulher se torna um o fator de risco relevante para o feminicídio. O presente trabalho, portanto, traz para a discussão as relações de gênero de forma suscinta ,sendo necessário maiores discussões e desenvolvimentos de pesquisas sobre o tema, pois  acreditamos que elas constituem, um campo muito propício para a ocorrência de relações baseadas em um modo Eu-Isso. Contudo, dentro deste campo mais amplo, situamos o fenômeno do feminicídio, algo que tem sido compreendido como o ápice do controle masculino sobre a vida e a morte da mulher.

 

 

Palavras-chave: Eu-Tu e Eu-Isso. Feminicídio. Gênero.Martin Buber
Исследование роли мутации в гене SLC6A1 в развитии шизофрении in vitro
Authors: Букина Е. С. , Артюхов А. С. , Кондратьев Н. В. , Карпов Д. С. , Абашкин Д. А. , Дашинимаев Э. Б. , Козин С. В.
Published: February 2021

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Nomenclatural and taxonomic notes on some species of Gyrinidae (Coleoptera)
Authors: Fery Hans , Hájek Jiří
Published: February 2021

Nomenclatural notes on the names of several species in the family Gyrinidae are provided. Six specific names are found to be junior homonyms. Three of them are replaced by nomina nova: Aulonogyrus marginatus (Aubé, 1838) by Aulonogyrus charlesaubei nom. nov., Gyrinus dubius Wallis, 1926 by Gyrinus suspectus nom. nov., and Macrogyrus (Andogyrus) colombicus australis (Brinck, 1977) by Macrogyrus (Andogyrus) colombicus brincki nom. nov. The other three junior homonyms were never considered congeneric with senior homonyms after the year 1899, and thus cannot not be replaced by new names: Gyretes dorsalis (Brullé, 1837), Macrogyrus australis (Brullé, 1835), and Andogyrus glaucus (Aubé, 1838); it is proposed that these names will be conserved by a ruling of the International Commission on Zoological Nomenclature. It is found that Enhydrus sulcatus (Forsberg, 1821) is a primary homonym and a junior subjective synonym of Enhydrus sulcatus (Wiedemann, 1821) in Wiedemann & Germar (1821). The neotype is designated for Gyrinus striatus Fabricius, 1792, which is a senior primary homonym and a senior subjective synonym of G. striatus Olivier, 1792 (both currently in Aulonogyrus Motschulsky, 1853). Gyrinus striatus was published by Olivier not only in 1792, but again in the year 1795 (so far treated as the correct publishing year). To stabilise the nomenclature, one and the same specimen is designated simultaneously as the neotype for Gyrinus striatus Olivier, 1792, and G. striatus Olivier, 1795, and thus both names become objective synonyms. Gyrinus ovatus Klug, 1829 is a senior subjective synonym of Gyrinus gibbus Aubé, 1838 syn. nov. and of Gyrinus apicalis Sharp, 1878 syn. nov. Gyrinus racenisi Ochs, 1953 must be used as the valid name for Gyrinus ovatus sensu Aubé (1838b) (nec Klug 1829). Lectotypes are designated for Gyrinus apicalis Sharp, 1878, Gyrinus gibbus Aubé, 1838, Gyrinus ovatus Klug, 1829, and Gyrinus paykulli Ochs, 1927b. Type specimens and diagnostic characters are illustrated for G. striatus Fabricius, G. striatus Olivier, G. ovatus Klug, G. racenisi and G. paykulli.
Acute stress leaves fear generalization in healthy individuals intact
Authors: Kausche Franziska Magdalena , Zerbes Gundula , Kampermann Lea , Müller Jana Christina , Wiedemann Klaus , Büchel Christian , Schwabe Lars
Published: February 2021

Because threatening situations often occur in a similar manner, the generalization of fear to similar situations is adaptive and can avoid harm to the organism. However, the overgeneralization of fear to harmless stimuli is maladaptive and assumed to contribute to anxiety disorders. Thus, elucidating factors that may modulate fear (over)generalization is important. Based on the known effects of acute stress on learning, which are at least partly due to noradrenergic arousal, we investigated whether stress may promote fear overgeneralization and whether we could counteract this effect by reducing noradrenergic arousal. In a placebo-controlled, double-blind, between-subjects design, 120 healthy participants underwent a fear-conditioning procedure on Day 1. Approximately 24 hours later, participants received orally either a placebo or the beta-adrenergic receptor antagonist propranolol and were exposed to a stress or control manipulation before they completed a test of fear generalization. Skin conductance responses as well as explicit rating data showed a successful acquisition of conditioned fear on Day 1 and a pronounced fear generalization 24 hours later. Although physiological data confirmed the successful stress manipulation and reduction of noradrenergic arousal, the extent of fear generalization remained unaffected by stress and propranolol. The absence of a stress effect on fear generalization was confirmed by a second study and a Bayesian analysis across both data sets. Our findings suggest that acute stress leaves fear generalization processes intact, at least in a sample of healthy, young individuals.
Investigation of the dyeing properties of wool fabrics with Alkanna tinctoria root extract
Authors: ÖNAL Adem , OZTAV Firdes , ESER Ferda
Published: February 2021

In this work, dyeing properties of wool samples with Alkanna tinctorum root extract was investigated. For this purpose, two different dyestuff extracts, red and blue are gained from its roots with acetone and ethanol solvents, as well. Wool fabrics (194 pieces) dyed with AIK(SO4)·12H2O, FeSO4·7H2O, CuSO4·5H2O, AgNO3 and CoCI2·6H2O mordants at pH 2, 4, 6 and 8, respectively. Unmordanting, pre-mordanting, meta-mordanting, and post-mordanting methods were used for the dyeing experiments. In addition, wool fabrics were pretreated with artificial animal urine system (AAUS) including NH3 (3%, v/v), CaC2O4 (3%, m/v) and urea (3%, m/v) before dyeing processes in order to see the improvement in the fastness properties of the dyed samples with meta-mordanting method. The color codes were determined with Pantone Color Guide, and also washing-, rubbing fastness levels were evaluated using gray scale. According to the evaluations, it is observed that AAUS mordant system helps to improve the light fastness values in general. Good results were obtained both for the dyeings with red and blue components, as well. Optimum dyeing parameters were also evaluated for wool fabric in terms of usage in textile industry.
ENSZ-igazgatású mesterséges állam állíthatja meg a migrációt?
Authors: Kondorosi Ferenc
Published: February 2021

Providing a comparative analysis of international relations and security studies, the author outlines an utopistic model for solving the migration crisis.
A menekültek integrációja Magyarországon
Authors: Klenner Zoltán
Published: February 2021

The author provides an overview of the theory and practice of social integration of foreigners in Hungary.
A migrációs tevékenységgel kapcsolatos biztonsági ellenőrzések
Authors: Csege Gyula
Published: February 2021

The author provides an overview of the legislatve framework and practice in controlling migration in Hungary.
Tijana Jurić eltűnési ügye
Authors: Bogdány Gyula
Published: February 2021

The author provides a description of a recent case which involved the exemplary cooperation of Serbian and Hungarian police.
Convergence to the Product of the Standard Spheres and Eigenvalues of the Laplacian
Authors:   RIKEN, Japan, Aino Masayuki
Published: February 2021

We show a Gromov-Hausdorff approximation to the product of the standard spheres for Riemannian manifolds with positive Ricci curvature under some pinching condition on the eigenvalues of the Laplacian acting on functions and forms.
Une saison en EHPAD
Authors: Legardinier Nathalie
Published: February 2021

La vie en ehpad s’est refermée pendant ce qu’on a nommé la « crise sanitaire ». Le confinement a bafoué les droits fondamentaux de se réunir, de circuler, de s’exprimer, tant à l’extérieur qu’à l’intérieur des établissements. La privation de liberté a causé des ravages psychiques qui sont pour la plupart restés inaperçus. Plus que jamais, la place de la psychanalyse s’est révélée dans la rencontre du dit dément, à l’écoute du désir qu’il convient d’écouter parler.
Dialogue sur le confinement au  sein de la communauté thérapeutique d’Aubervilliers
Authors: Besse Monique , Milian Olivier
Published: February 2021

À travers le témoignage d’un éducateur travaillant dans une communauté thérapeutique, on voit que le confinement a modifié les relations entre les usagers et les professionnels de même que leur relation à l’institution. Les professionnels, en s’adaptant, ont eux aussi modifié leur posture d’accompagnement. Peut-être cela apporte-t-il de nouvelles perspectives de travail.
Confinement et sans-abri : la fabrique du « Toujours plus »
Authors: Santiago Sanz Henri
Published: February 2021

Pour les sans-abri, à Toulouse comme ailleurs, le confinement imposé devant la pandémie Covid-19 a été le théâtre d’un renforcement de leur exclusion dans tous les registres. Les verbalisations absurdes ainsi que les mesures prises par les autorités en matière de mise à l’abri, d’alimentation, d’accès à l’eau, plus que largement insuffisantes, ont révélé une déconsidération redoublée par les autorités de ces populations les plus vulnérables.
Fatty acids, bioactive substances, antioxidant and antimicrobial activity of Ankyropetalum spp., a novel source of nervonic acid
Authors: Comlekcioglu N. , Kutlu M.
Published: February 2021

Ankyropetalum extracts were obtained by using two different extractors (Soxhlet and ultrasonic bath). The phenol, flavonoid, DPPH, FRAP, and antimicrobial activity properties of the extracts were investigated. In addition, the fatty acid composition was determined in GC-MS. High values were found in A. reuteri and A. gypsophiloides for total phenolic and flavonoid contents, respectively. DPPH and FRAP values were high in A. arsusianum and A. gypsophiloides, respectively. Better results were obtained by using methanol as the solvent and soxhlet as the extractor. The results showed that the extracts seem to be reasonably effective against test organisms including clinical isolates. The most promising results were obtained with all species USB extracts against Candida parapsilosis. It is notable that the levels of nervonic acid in A. arsusianum and A. reuteri reached 40%. Unlike other sources of nervonic acid in the world, the absence of erucic acid in plant oil increases the value of these plants.
Preparation and characterization of oleogels with tallow and partially hydrolyzed tallow as organogelators
Authors: Keskin Uslu E. , Yılmaz E.
Published: February 2021

The aim of this study was to evaluate the organogelation potential of tallow fat (TF) and partially hydrolyzed tallow fat (HTF) against saturated monoglyceride (MG) and a saturated monoglyceride + diglyceride mixture (MDG) as the organogelators. TF itself created oleogel at a 30% addition level, while HTF, MG and MDG oleogels were prepared at 10% addition levels. Fatty acid composition data showed that the oleogel of HTF (HTFO) was quite similar to those of MG and MDG oleogels. Solid fat content, free fatty acidity and peroxide values were found to be in acceptable ranges for HTFO. Thermal properties, crystal morphology and X-ray diffraction patterns were also evaluated. Rheological analyses indicated that all oleogels had higher storage modulus (G´) than loss modulus (G´´). The time-sweep test showed that after applying higher shear rates, the gels re-formed at rest. Further, all oleogels maintained their gelled consistency until around 54 °C. The results suggest that HTF could be a cheap, efficient, fast melting, safe and readily available organogelator.
A Review on Natural Dye Sensitized Solar Cells: Dye Extraction, Application and Comparing the Performance
Authors: Nahar Kamrun
Published: February 2021

Among all the solar cell system dye sensitized solar cell is the third-generation solar cell that contains working electrode coating with semiconducting material, dye sensitizer, counter electrode and the efficiency of dye sensitized solar cell is reliant on the material which is absorbing light and converting it as energy. In this respect, dye sensitizer is the most substantial component in dye sensitized solar cell. Though organic and natural dye has been used in solar cell but due to the deleterious effect of organic dye, its application has been suppressed by the natural dye which is environment friendly and accessible. Ample of natural dyes has been applied in solar cell as sensitizer, while their way of application is different especially in case of dye extraction process. In this theoretical analysis, various research work related to dye sensitized solar has been included and explained the working principle of dye sensitized solar cell (DSSC), also summarized the extraction process of natural dye from different along with their photovoltaic parameters of various natural dye sensitized solar cell. Moreover, this study also compares the performance of natural dye sensitized solar cell according to presence of chromophore group in natural pigment.
The Effect of Combined Loads on the Destruction of Rocks with a Granular Structure
Authors: Romanova Victoria S. , Gabov Viktor V.
Published: February 2021

The article addresses the features of rock disintegration based on the principles of selective and preferential destruction in high-frequency cone vibratory crushers with a free-turning inner cone. Based on the common method for determining the ultimate strength of rocks, a method for investigating the process of ore destruction under repeated and versatile influences has been proposed depending on the structure of the crushed material. The results of an experimental research of the destruction of rock samples on a press with limited force are given.
Analysis of Promising Areas for Creating Materials of Micromechanical Devices
Authors: Bibikov Sergey , Kalinkina Mariia , Kuznetsov Aleksandr , Pevneva Anna , Pirozhnikova Olga , Tkalich Vera
Published: February 2021

In this work, data on the development of such an important section of Electrical Engineering as “Electrical conductors and methods for their manufacture” are gathered together. The information collected will allow you to compare different materials suitable for the manufacture of electrically conductive structures. The paper also has a history of the development of this section, as well as a patent study of relevant and unusual methods for the manufacture of electrical conductors.
Studying the Relationship between the Strength and Stress-Related Characteristics of Concrete as a Conglomerate and the Properties of its Components
Authors: Shcherban Evgeniy M. , Stelmakh Sergey A. , Sysoev Aleksandr , Chernil'nik Andrei
Published: February 2021

The concrete conglomerate properties change over time and depend on a number of factors. When considering deformation under the effect of mechanical loads or changes in temperature and humidity, the mechanism of this process is based on three main provisions. Firstly, concrete is a composite material, the matrix of which is cement stone. Secondly, the elastic modulus and strength of the cement stone may be less or more than that of aggregate. Thirdly, the concrete destruction under axial compression occurs at the cement stone stresses exceeding its ultimate extensibility in the direction normal to the external load action. Considering the specifics of deformation under load in different periods and the role of stress-related characteristics in this process, it is advisable to outline ways to regulate them and thereby the main concrete properties in the desired direction. The importance and feasibility of this approach are determined by the need to develop techniques allowing control of properties such as elasticity, shrinkage, and creep. A series of experimental tests and a comparative analysis of the results have been performed. The effect of some aggregate rocks on certain strength and stress-related properties of the concrete conglomerate has been investigated. Limestone and sandstone have been taken as the rocks studied. The properties studied include impact, axial compression, and axial tensile strengths. According to the analysis, concrete prepared on crushed limestone has shown the best results concerning all the properties studied.
Direct Laser Deposition Method of Multilayer Coating on High Manganese, Non-Magnetic Steel
Authors: Masaylo Dmitriy V. , Igoshin Sergei , Orlov Alexey , Popovich Anatoly A.
Published: February 2021

Metal structures, pipelines and dies are used for a long time wear out and deteriorate. At the end of the service life it is necessary to repair or replace the metal component. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. Inconel 625 alloy is used as a buffer layer or repair material. But there is a high probability of cracks in the cladding material and the substrate material when the DLD method is used. One of the frequent causes of these cracks is high tensile stresses and oxides. To eliminate defects, the substrate was heated with resistive heaters to 400 °C. The result was a defect-free adhesion of the cladding material and the substrate. The hardness of the substrate before and after heating has not changed (312 HV 0,5/10). After heating the hardness of the substrate in the heat-affected zone decreased by 14% and was equal to 267 HV 0,5/10. The hardness of the cladding decreased by 12% and was equal to 230 HV 0,5/10.
Conserved Epigenetic Programming and Enhanced Heme Metabolism Drive Memory B Cell Reactivation
Authors: Price Madeline J. , Scharer Christopher D. , Kania Anna K. , Randall Troy D. , Boss Jeremy M.
Published: February 2021

Memory B cells (MBCs) have enhanced capabilities to differentiate to plasma cells and generate a rapid burst of Abs upon secondary stimulation. To determine if MBCs harbor an epigenetic landscape that contributes to increased differentiation potential, we derived the chromatin accessibility and transcriptomes of influenza-specific IgM and IgG MBCs compared with naive cells. MBCs possessed an accessible chromatin architecture surrounding plasma cell–specific genes, as well as altered expression of transcription factors and genes encoding cell cycle, chemotaxis, and signal transduction processes. Intriguingly, this MBC signature was conserved between humans and mice. MBCs of both species possessed a heightened heme signature compared with naive cells. Differentiation in the presence of hemin enhanced oxidative phosphorylation metabolism and MBC differentiation into Ab-secreting plasma cells. Thus, these data define conserved MBC transcriptional and epigenetic signatures that include a central role for heme and multiple other pathways in augmenting MBC reactivation potential.
IFNs Reset the Differential Capacity of Human Monocyte Subsets to Produce IL-12 in Response to Microbial Stimulation
Authors: Muglia Amancio Alice , Mittereder Lara , Carletti Alexie , Tosh Kevin W. , Green Daniel , Antonelli Lis R. , Gazzinelli Ricardo T. , Sher Alan , Jankovic Dragana
Published: February 2021

Human primary monocytes are composed of a minor, more mature CD16+(CD14low/neg) population and a major CD16neg(CD14+) subset. The specific functions of CD16+ versus CD16neg monocytes in steady state or inflammation remain poorly understood. In previous work, we found that IL-12 is selectively produced by the CD16+ subset in response to the protozoan pathogen, Toxoplasma gondii. In this study, we demonstrated that this differential responsiveness correlates with the presence of an IFN-induced transcriptional signature in CD16+ monocytes already at baseline. Consistent with this observation, we found that in vitro IFN-γ priming overcomes the defect in the IL-12 response of the CD16neg subset. In contrast, pretreatment with IFN-γ had only a minor effect on IL-12p40 secretion by the CD16+ population. Moreover, inhibition of the mTOR pathway also selectively increased the IL-12 response in CD16neg but not in CD16+ monocytes. We further demonstrate that in contrast to IFN-γ, IFN-α fails to promote IL-12 production by the CD16neg subset and blocks the effect of IFN-γ priming. Based on these observations, we propose that the acquisition of IL-12 responsiveness by peripheral blood monocyte subsets depends on extrinsic signals experienced during their developmental progression in vivo. This process can be overridden during inflammation by the opposing regulatory effects of type I and II IFN as well as the mTOR inhibition.
High-flow hydrogen inhalation might suppresses the immune function of middle-aged participants
Authors: Chen Ji-Bing , Kong Xiao-Feng , Mu Feng
Published: February 2021

Hydrogen inhalation therapy has been proven to be safe and effective in disease treatment in multiple clinical reports, but the gas flow rates used in different studies vary greatly. Since there is no upper limit for the safe concentration of hydrogen, this study tested the effects of high-flow (not high concentration) hydrogen inhalation on immune function. From October 2019 to January 2020, 20 adult participants (31–60 years old) were enrolled in a self-controlled study to check the immune function in peripheral blood lymphocyte subsets before and after a 2-week hydrogen inhalation protocol. The participants inhaled hydrogen for 2 or 4 hours each day. After 2 weeks of hydrogen inhalation, statistically significant changes were observed in follicular helper T cells, helper and cytotoxic T cells, natural killer and natural killer T cells, and gamma delta T cells, generally suggesting a decrease in their proportions. These results show that high-flow hydrogen inhalation has an inhibitory effect on the immune function of healthy participants. The study protocol received ethical approval from the Ethics Committee of Fuda Cancer Hospital, Jinan University on December 7, 2018 (approval No. Fuda20181207).
Rab11-Mediated Focal Adhesion Turnover in Sarcoma Cell Migration
Authors: Kao Ling-Yi , Chao Wei-Ting
Published: February 2021

Focal adhesion (FA) turnover has been demonstrated to play an important role in cell migration; however, the mechanism of FA turnover is complicated and requires further investigation. In this study, Rab11, which is involved in endosome recycling, was examined in terms of a direct regulatory function in FA formation during cell migration. Wild-type and dominant negative (DN) Rab11 or shRab11 were transfected into human HT1080 fibrosarcoma cells; the cell motility and migration abilities were determined, and localization of Rab11 and FA molecules was monitored by confocal microscopy. The results showed that Rab11 deficiency or the DN form inhibited sarcoma cell migration. Rab11 was also found to be co-localized with recycled β1 integrin and affected FA formation. We further employed immunofluorescence and immunoprecipitation to examine the physical interaction between Rab11 and focal adhesion kinase (FAK), and the results suggested that Rab11 affected cell migration by regulating FAK recycling to aid formation of an FA complex on the cell membrane.
The center of the categorified ring of differential operators
Authors: Beraldo Dario
Published: February 2021

Let

\mathcal Y

be a derived algebraic stack satisfying some mild conditions. The purpose of this paper is three-fold. First, we introduce and study

\mathbb H(\mathcal Y)

, a monoidal DG category that might be regarded as a categorification of the ring of differential operators on

\mathcal Y

. When

\mathcal Y = \mathrm {LS}_G

is the derived stack of

G

-local systems on a smooth projective curve, we expect

\mathbb H (\mathrm {LS}_g)

to act on both sides of the geometric Langlands correspondence, compatibly with the conjectural Langlands functor. Second, we construct a novel theory of D-modules on derived algebraic stacks. In contrast to usual D-modules, this new theory, to be denoted by

\mathcal D^{\mathrm{der}}

, is sensitive to the derived structure. Third, we identify the Drinfeld center of

\mathbb H(\mathcal Y)

with

\mathcal D^{\mathrm{der}}(L\mathcal Y)

, the DG category of

\mathcal D^{\mathrm{der}}

-modules on the loop stack

L\mathcal Y

: =

\mathcal Y \times_{\mathcal Y \times \mathcal Y}\mathcal Y

.
Students’ desires for high-level teaching and learning opportunities: Views of Namibian Grade 11 students observed to have difficulties in learning mathematics
Authors: Hamukwaya Shemunyenge
Published: February 2021

This study focusses on the views of students in learning grade 11 mathematics in terms of their needs and aspirations regarding access to high-level mathematics teaching and learning opportunities. Students who participated in this study (88 grade 11 Namibian students) were identified as having learning difficulties by their mathematics teachers, but these students did not (themselves)consider that they had difficulties. The author attempts to understand why students believed they do not have difficulties in learning mathematics. A qualitative method was employed, and the students were investigated via semi-structured interviews. The transcripts were analysed using an interpretational analysis. This study revealed that students display interest in learning mathematics and that they tend to feel comfortable with the subject despite certain influencing factors. The students’ perceptions are that their learning processes were negatively affected by aspects of systemic factors, teachers’ and students’ own factors, and access to learning resources. The students feel that they lack high-level access to teaching and learning, and this limits their potential for achieving the level at which they are expected to perform and be academically successful. In addition to the implications that emerged, this study makes recommendations on what should be done to address the negative factors perceived by the students.
Merengkuh Imaji, Melukis Liturgi
Authors: Augustan Hansel
Published: February 2021

Imajinasi merupakan keniscayaan di dalam tatanan kemanusiaan yang memiliki kekuatan untuk menyingkapkan makna, menjangkau realitas, memberi rasa, dan menggerakkan manusia. Sayangnya, imajinasi kerap dipandang sebelah mata dan tidak menemukan tempatnya di dalam kehidupan religius manusia. Hal ini dapat disaksikan, contohnya, di dalam ritual ibadah gereja Protestan. Logosentrisme dan berbagai momentum sejarah telah membawa gereja dalam tradisi yang luas ini kepada sebuah krisis imajinasi. Sungguh merupakan sebuah ironi, sebagaimana ibadah merupakan ritual menubuh yang secara sakramental mengungkapkan realitas sesungguhnya dari semesta. Oleh sebab itu, tulisan ini mencoba untuk merevitalisasi dan menyingkapkan kembali signifikansi imajinasi, khususnya bagi orang-orang percaya di dalam konteks ibadah Kristen. Melalui teori ontologi Trinitarian Supernaturalism yang diusulkan John Jefferson Davis, artikel ini akan memaparkan bagaimana imajinasi dapat menjadi kendaraan yang membawa jemaat untuk memaknai ibadah di dalam realitas ontologi yang “utuh.” Implikasi secara khusus akan didaratkan pada praktik bernyanyi kongregasional sebagai aktivitas performatif yang mendominasi ritual ibadah. Dengan elaborasi tersebut, diharapkan jemaat dapat mengalami pemaknaan yang utuh dan otentik di dalam ibadah.
Narasi Membangun Selebrasi
Authors: Rachman Rasid
Published: February 2021

Pada awalnya, ibadah Kristen muncul dari percakapan sosial sekitar perjamuan. Percakapan di ruang makan tersebut membentuk narasi-narasi sekitar wafat Kristus. Dalam artikel ini, saya menelusuri narasi sekitar wafat Kristus yang melahirkan pengharapan mesianisme dalam komunitas-komunitas Kristen sangat awal. Inti kajian saya adalah bahwa ekspresi pengharapan mesianisme tersebut melahirkan narasi kebangkitan dan kedatangan Kristus kedua kali. Para Penulis Injil, yang mengembangkan narasi-narasi tersebut, mengumpulkan kisah-kisah dari berbagai sumber sehingga menampilkan narasi-narasi baru─renarasi─tentang hidup, karya, wafat, dan bangkit Yesus Sang Mesias. Saya akan memaparkan bahwa narasi-narasi sekitar Yesus kelak mewujud dalam bentuk ibadah ritual yang menjadi karakter pertemuan jemaat awal. Bentuk ritus dan praktik ibadah ritual tersebut adalah ibadah hari pertama (Minggu), doa-doa harian, ibadah Paska, dan baptisan. Bersamaan dengan itu, ibadah ritual pada dirinya merenarasikan kisah Kristus─semuanya saling berkelindan dan bergulir dalam perjalanan sejarah. Ibadah ritual gereja masa kini merupakan warisan yang berawal dari cerita-cerita di ruang makan kekristenan sangat awal.
Delighting the Trinity: An Introduction To Christian Faith
Authors: Wijaya Jonathan Cristian
Published: February 2021

Sebuah resensi untuk buku Delighting the Trinity.
No negociable: estrategias de retroalimentación no dialógicas en los exámenes parciales en una universidad limeña en un contexto intercultural
Authors: Arcela Pérez Magaly
Published: February 2021

En un contexto de inserción cultural y social de alumnos de sectores desfavorecidos, en el presente artículo, basado en mi tesis de maestría (2017), examino las retroalimentaciones realizadas por dos profesores universitarios en los exámenes parciales de los cursos de Historia y de Ética. Este estudio fue llevado a cabo desde la concepción crítica del
lenguaje como práctica social (Fairclough, 1992) y la teoría de la valoración (Martin y White, 2005). El objetivo de esta investigación es explicar las formas en las que se retroalimenta en los exámenes parciales y conocer si las estrategias discursivas empleadas por estos docentes se construyen de forma dialógica. Los resultados muestran la preferencia de los profesores por evaluar negativamente y por emplear estrategias lingüísticas que cierran
los canales de diálogo y reproducen relaciones jerárquicas.
El estereotipo de subalternidad en Pequeña Flor
Authors: Valdivia Uzátegui Laura Alejandra
Published: February 2021

Hablar de Clarice Lispector significa adentrarnos en este mundo de mujeres que nos comunican, mediante sus acciones, sus deseos de querer librarse del mundo cómodo, protegido y patriarcal en el cual viven, pero del que son protagonistas. El cuento que escogí para el presente ensayo es «La Mujer más pequeña del mundo».
¿Qué publicación del 2020 no dejaría de leer?
Authors: Rossi Gustavo
Published: February 2021

.
Effect of low salinity on the survival of postlarvae of the blue shrimp, at different stages
Authors: Xinhong Su , Changchun Shen , Zhangwu Yang , Zheng Yayou.
Published: February 2021

The development of low salinity culture techniques is the major factor that facilitated the wide- spread cultivation of the white shrimp Litopenaeus vannamei in China. Similarly, adaptation to fresh or low salt water is critical for the commercial farming of a related species, the blue shrimp L. stylirostris. To determine the effects of low salinity on L. stylirostris development, the survival of postlarvae was investigated at different levels of salinity at the Haichang Jinhaian Shrimp Breeding Farm and Gulangyu Breeding Farm for Aquatic Animals of the Fisheries Research Institute of Fujian during 2002-2003. Results showed that both salinity and the age of the post- larvae significantly affected survival (p<0.01). The minimum seawater salinity for young postlar- vae was 10-14 ppt and survival rates increased with age. When the post-larvae were 9 days old or older (≥P9), survival did not significantly differ in the low salinity treatments from that of the control (P12). The first hour was the most critical period. If larvae survived the first hour, they usually survived the whole study period (24 h) or longer.
Effect of Dietary Administration of Sardine Oil on Growth, Survival, and Enzymatic activity of Macrobrachium rosenbergii (de Man)
Authors: Shivananda Murthy H. , Ramachandra Naik A.T.
Published: February 2021

Five test diets were formulated using locally available feed ingredients:fishmeal, groundnut cake, rice bran, tapioca flour, and vitamin/mineral premix. Diets contained 35% crude protein with graded lipid levels. Sardine oil was incorporated at four dietary levels: 2.07%, 4.07%, 6.07%, or 8.07%, with corresponding total lipid levels of 8.11%, 10.24%, 12.28%, and 14.33%. A diet without sardine oil (6.05% total lipid) served as control. The diets were fed to giant freshwater prawns, Macrobrachium rosenbergii, for 112 days. A significantly higher weight gain was recorded in the treatment with 6.07% sardine oil and the specific growth rate, food conversion rate, and protein efficiency ratios were best in this treatment. The diet containing 8.07% sardine oil produced the highest RNA: DNA ratio in the prawn muscle, significantly similar to the ratio in prawns fed the 6.07% diet and significantly higher than in prawns fed the other diets. Digestive enzyme analyses in the digestive tract and midgut gland showed the greatest activity in prawns fed the 8.07% diet.
Rearing White Grouper (Epinephelus aeneus) in Low Salinity Water: Effects of Dietary Salt Supplementation
Authors: Cnaani Avner , Smirnov Margarita , Harpaz Sheenan , Stavi Amir
Published: February 2021

The white grouper (Epinephelus aeneus) is native to the Mediterranean Sea and the eastern Atlantic Ocean. It is an important species in fisheries of this region, having high market value. Our project of white grouper domestication in brackish water systems aims at developing culture methods for local conditions. The study evaluates the potential of culturing white grouper in low salinity water and the effect of an NaCl-enriched diet on this species. The results of a three-month culture period, conducted at a commercial farm, demonstrate that white grouper can grow in 3 ppt salinity and that 3% dietary salt supplementation can significantly improve its growth. However, the overall growth performance in low salinity was below expected for this species and further research is needed to develop culture practices for white grouper.
Effect of Color and Mesh Size on Growth Performance and Net Fouling of Suspended Hatchery Trays for Crassostrea belcheri (Sowerby 1871) Oysters
Authors: Kitt L.M. , Tanyaros S.
Published: February 2021

The effects of mesh size and color on growth performance and net fouling of suspended plastic mesh trays during nursery culture of spat and juvenile hatchery-reared tropical oysters, Crassostrea belcheri (Sowerby 1871), was studied for 60 days. Mesh diameter significantly affected the absolute growth rate in shell width, the specific growth rate, and the final survival of smallspat (p<0.05). Mesh diameter and color had non-significant effects (p>0.05) on the growth performance of large spat. There were no significant interactive effects between mesh size and color on growth performance of small or large spats. Mesh size and color significantly affected (p<0.05) the net fouling rate: the rate was high on small mesh (0.35 cm) and low on large mesh (0.72 cm) for small spat, high on black trays and low on green trays for large spat. There were no significant interactive effects of mesh size and color (p>0.05) on the fouling rate for either small or large spats.
Evaluation of Six Anesthetics for Use with the Mediterranean Mussel, Mytilus galloprovincialis
Authors: Angelidis P. , Vatsos I.
Published: February 2021

An effective anesthetic scheme would significantly contribute to the investigation of disease in the Mediterranean mussel (Mytilus galloprovincialis), especially when biopsy is required. In this study, we evaluated the efficacy of six anesthetics: 2-phenoxyethanol (2 ml/l), ΜS222 (0.4 and 1 g/l), MgCl2 (20 and 50 g/l), clove oil (1.5 ml/l), benzocaine (1.5 g/l), and 1-phenoxy-2-propanol (2.5 ml/l) when used to anesthetize Mediterranean mussel. For this purpose, 810 mussels were allocated to nine groups of 90 mussels each (three replicates of 30 individuals in each group). Each group was exposed to one of the above concentrations of anesthetics for 24 h, except for one group kept as the control. Mussels were considered anesthetized when they did not close their valves after tapping them with a pair of forceps. The most effective anesthesia was MS222 at the concentration of 1 g/l; it induced anesthesia in 58.8±1.92% of the exposed mussels with negligible mortality (5.7±5.8%) of the anesthetized mussels one week after anesthesia. Further, when using MS222 there was no correlation between the number of anesthetized mussels and temperature. However, the number significantly increased as the size of the mussels decreased. MgCl2 at the concentration of 20 g/l resulted in notable retardation of valve movement.