bluuebunny/crossref_metadata_2025 huggingface dataset:
The Peculiarities of Hidden Sense Decoding by Young Schoolchildren with Alalia
Authors: Хомякова Т.В.
Published: October 2020

В статье описываются результаты научного исследования по выявлению у детей младшего школьного возраста с речевой патологией специфических трудностей декодирования речевой продукции, включающей скрытый смысл.
Констатирующий эксперимент охватывал две группы учащихся: контрольную
и экспериментальную. Младшим школьникам с недоразвитием речи были предложены два вида заданий, каждое их которых направлено на выявление специфических ошибок
и трудностей. Предъявляемые задания экспериментального исследования разрабатывались с учетом особенностей внимания, слухоречевой памяти, речевого восприятия и психолингвистических возможностей участников эксперимента.
Полученные в ходе исследовательской работы данные свидетельствуют о невысоком уровне развития языкового мышления учащихся с речевой патологией, о наличии дефицитарности комплекса логико-грамматических правил, участвующих в дешифровке скрытого смысла. Задача данной работы заключается в том, чтобы отразить выявленные специфические трудности и определить систему коррекционно-логопедического воздействия по их устранению.
На базе проведенного исследования нами была разработана методика по развитию логико-грамматических конструкций языка и дешифровке скрытого смысла текстовых высказываний для младших школьников с речевой патологией, обучающихся по общеобразовательным программам

The article describes the findings of a research aimed at the investigation of challenges experienced by young schoolchildren with speech disorders when decoding hidden senses.
The ascertaining experiment involved two groups of learners (a control group and an experimental group). Young schoolchildren with alalia were asked to perform two types of tasks whose aim was to identify specific mistakes and challenges. Preparing the tasks for the experiment, the author took into consideration the peculiarities of children’s attention, the peculiarities of their auditory memory, speech perception, psycholinguistic abilities.
The findings of the research show that speech disorders such as alalia lead to speech underdevelopment, deficient lexical-grammatical abilities, difficulties of hidden sense recognition. The aim of the article is to describe the specific challenges and to elaborate a system of correctional treatment.
The findings of the research have enabled us to develop a correctional strategy for improving young alalic learners’ logic and grammar, their ability to decipher hidden senses.
Challenges and Opportunities to Develop Diagnostics and Therapeutic Interventions for Severe Acute Respiratory Syndrome- Corona Virus 2 (SARS-COV-2)
Authors: Jeevanandam Jaison , Banerjee Subhamoy , Paul Rajkumar
Published: October 2020

Severe Acute Respiratory Syndrome-Corona Virus 2 (SARS-CoV-2) or Corona Virus Disease 19 (COVID-19) is playing havoc all over the world since December 2019. Despite being a family member of coronaviridae, which has previously affected mankind twice in last one decade, the novel corona virus, as it is named left medical practitioners and scientists defenseless. The major challenge is twofold identification and therapeutic intervention. Several approaches, including real-time PCR have already been taken for quick identification of Covid19. Due to very fast evolving rate, accurate identification is still a challenge for most of the detection methods developed in last three months. Several proposals for therapeutic intervention have also put forth by scientists, ranging from vaccine to RNA therapy. In this article, a comprehensive review is made from the scattered scientific literatures and is fine-tuned further with possible diagnostic and therapeutic interventions.
Analisis Filogenetik Dan DNA Barcode Ektoparasit Octolasmis cor Yang Terinfestasi Pada Kepiting Bakau Scylla spp.
Authors: Suherman Sutianto Pratama , Arsad Sulastri
Published: October 2020

Indentifikasi morfologi memiliki keterbatasan dan hanya bisa diaplikasikan pada saat memasuki fase remaja atau dewasa, Identifikasi menggunakan sekuens DNA merupakan alternative yang dipakai dalam mengungkapkan taksonomi. Tujuan dari penelitian ini adalah mengetahui komposisi DNA dari gen 18s rRNA ektoparasit Octolasmis cor dan menganalisis filogenetik serta identifikasi spesies. Hasil menunjukan karakteristik molekuler 18 rRNA dari sampel parasit O.cor yang ditemukan di wilayah Sulawesi Selatan diperoleh panjang DNA 1500 bp dengan komposisi basa Adenin 354 (23,6 %), Guanin 444 (29,6 %), , Timin 360 (24 %) dan Citosin 342 (15,1%). Berdasarkan hasil analisis filogentik menunjukan jarak 0,004 yang artinya memiliki kedekatan hubungan atau kemungkinan dari spesies yang sama
Portal Venous Pressure as a Predictor of Mortality in Child’s A Cirrhotic Patients Undergoing Elective Surgery: A Prospective Study
Authors: El-Ghobary Mohamed , Salman Ahmed Abdallah , Shaaban Hossam El-Din , Mostafa Mohamed Saber , Tourky Mohamed Sabry , Youssef Ossama Ramzy , Omar Mahmoud Gouda
Published: October 2020

BACKGROUND: Recently, portal venous pressure (PVP) exhibited high sensitivity and specificity in anticipating death in cirrhotic cases submitted to emergency operations.
AIM: The current prospective work aimed to evaluate the utility of PVP in predicting 1st month post-operative death in Child’s A cirrhotic cases who underwent elective operations.
METHODS: One-hundred and twenty cirrhotic cases that were planned to undergo elective surgery were enrolled in the current prospective work. The intraoperative (I.O) PVP and central venous pressure (CVP) were measured. The statistical analysis was performed using the SPSS version 22.0. The receiver operative curve was plotted to measure the predictive value of PVP. Multivariate analysis was done using logistic regression method for the significant variables impacting mortality on univariate analysis.
RESULTS: Twenty-nine patients died in the current work. Patients who survived had statistically considerably lower PVP than patients who died (8.2 ± 1.5 vs. 12.5 ± 1.6 mmHg, respectively, p < 0.001). Similarly, patients who died had significantly higher I.O CVP (p < 0.001), body mass index (p < 0.001), and were more likely to have model for end-stage liver disease score between 9 and 16 (p = 0.003). At a cutoff value ≥10.5 mmHg, the PVP had a sensitivity of 82.8% and specificity of 93.4% for the prediction of mortality. The logistic regression analysis showed that only PVP (odds ratio [OR] =3.1, 95% confidence interval [CI] 1.25–7.5) and CVP (OR = 2.8, 95% CI 1.2–6.5) were the only independent predictors of mortality.
CONCLUSION: PVP is a significant predictor of death in Child’s A cirrhotic cases submitted to elective operations.
The Correction Methods of the Intestinal Microflora in Chronic Colonic Stasis by Siphon Enema and Probiotics as a Means of the Hirschsprung-associated Enterocolitis Prevention
Authors: Burayev Galymzhan , Khamitov Medet , Lozovoy Vassily , Aipov Rasulbek , Lozovaya Elena , Akhmaltdinova Lyudmila , Burayeva Kamshat
Published: October 2020

AIM: The purpose of the current article is to study the state of the intestinal microflora in the context of chronic colonic stasis and assesses the methods of its correction by means of siphon enema and probiotics’ implication (bifidumbacterin and lactobacterin) to prevent the development of HAEC.
METHODS: This study was conducted in the Astana City Children’s Hospital No. 2 and involved 60 children who applied for medical help with symptoms of chronic constipation. They were admitted to the hospital in a planned or emergency manner with suspected Hirschsprung’s disease in the period from 2015 to 2017, after approval of the Ethics Committee. An X-ray contrast study of the large intestine (irrigography) was performed in all the children for a diagnostic purpose. The following parameters of the state of the large intestine were studied: The function of the ileocecal valve (Bauhin’s valve), the diameter and shape of the large intestine, the presence of pathological formations, and symptoms of intestinal obstruction. Statistical analysis was carried out using Student’s test for dependent and independent samples by means of the BioStat Software.
RESULTS: After treatment, the bacteriological examination of stool samples demonstrated an increase in the number of beneficial microorganisms and a decrease in the number of opportunistic microorganisms. The growth in the number of patients with the normal intestinal microflora (14 patients – 70%) was observed along with the reduction in the number of patients with intestinal dysbiosis, with a statistically significant difference (p < 0.001).
CONCLUSION: The developed method of correcting the quantitative composition of the intestinal microflora is very effective and can be implemented in clinical practice.
Empirical Study on Sick Building Syndrome from Indoor Pollution in Nigeria
Authors: Afolabi Adedeji O. , Arome Akpa , Akinbo Faith T.
Published: October 2020

There are rising cases of building occupants with health-related challenges such as irritation, asthma, lung infections, headaches, and other allergies. These health conditions sometimes disappear once the occupants live such buildings which are referred to as sick building syndrome (SBS). With the high fatality rate associated with air pollution and Nigeria ranking 4th in the poorest air quality globally, the study assessed SBS from indoor pollution in residential and office spaces. The study utilized a cross-sectional survey research design and employed the use of an air quality detector to measure a 24-h mean measurement of air conditions within the study area. The study was carried out in Zaria, Kaduna State. Statistical tools such as graphs, mean score, analysis of variance (ANOVA), and correlation matrix were used to analyze the dataset. The study showed that the major symptoms associated with SBS from indoor pollution. The indoor conditions that may contribute to SBS in the residential and office spaces were mainly lighting conditions, headroom in the building, and position of windows. While the study reported that the presence of SBS from indoor pollution can lead to increased maintenance, dizziness, and depression/breakdown. The measurement of the indoor pollutants contributing to the SBS among residential and office space occupants showed that PM2.5 and PM10 were mostly above the average 24-h mean standard. The study suggested recommendations to improve indoor air quality and reduce syndromes associated with sick buildings.
Effect of Glucocorticoids Following Application of Adenosine Receptor Blockers in Patients with Chronic Obstructive Bronchitis and Bronchial Asthma
Authors: Shabani Driton , Mustafa Lirim , Islami Pellumb , Iljazi Ali , Dauti Arta , Islami Hilmi
Published: October 2020

AIM: The effects of the glucocorticoids (GR) fluticasone and budesonide and a blocker of the adenosine receptor in the treatment of patients with chronic obstructive pulmonary disease (COPD) and bronchial asthma were studied in this work.
METHODS: The parameters of lung function were determined with body plethysmography. Airway resistance (Raw) was registered and measured and the intrathoracic gas volume and specific resistance (SRaw) of the airways were also calculated.
RESULTS: The results of this study of patients with COPD and bronchial asthma used doxofylline as a blocker of the adenosine receptor. Doxofylline was given orally on 7 consecutive days at home with a dose of 2 × 400 mg orally. Raw and IGTV were then measured, and SRaw was calculated. The results indicated a significant decrease in the airway specific resistance (p < 0.05). On the 8th day, the same patients were given two inhalations with spray fluticasone and budesonide (budesonide, 2 inh × 2 mg; Pulmicort 2 inh × 125 mcg). After the inhalations were given, Raw and IGTV were measured after 5, 15, 30, 60, and 120 min, SRaw was then calculated.
CONCLUSION: After the preliminary application of doxofylline, the GRs fluticasone and budesonide have a significant effect (p < 0.01) on the decrease of the airway SRaw. This effect suggests that the blocking effect of the adenosine receptor (p < 0.05) emphasizes the bronchodilation effect of GRs (p < 0.01).
Patient-reported Satisfaction with Current Clinical Management of Systemic Lupus Erythematosus in Kazakhstan
Authors: Khamitov Yeldos , Khismetova Zaituna , Goremykina Maiya , Vento Sandro , Kotlyar Arkadiy , Glushkova Natalya
Published: October 2020

BACKGROUND: Over the past decades, patient satisfaction has been increasingly recognized as a powerful tool to measure the quality of health-care services.
AIM: This study evaluated the satisfaction of systemic lupus erythematosus (SLE) patients with current clinical management in Semey, East Kazakhstan, and explored the factors associated with dissatisfaction.
METHODS: All adult SLE patients registered at health-care facilities of Semey were enrolled in a cross-sectional study.
RESULTS: Out of 67 patients, 66 were females and their mean age was 39 years. Symptoms associated with the musculoskeletal system were the most commonly reported (95.5%), followed by fatigue (88.1%) and neurological symptoms (53.7%). None of the patients were very satisfied or satisfied with current clinical management and the overall rate of patient dissatisfaction was 83.6%. Education (p = 0.04), monthly income (p = 0.01), SLE disease activity index score (p = 0.031), therapy with biologic agents (p = 0.029), immunosuppressants (p = 0.01), and corticosteroids (p = 0.01) were predictors of patient dissatisfaction in multiple logistic regression analysis.
CONCLUSION: This real-world study is the first effort to understand the experience of SLE patients within the health-care system of Kazakhstan and the results may facilitate doctor-patient discussions on the initiatives that need to be taken to improve the quality of the medical services provided.
Effectiveness of Progressive Muscle Relaxation on The Complete Opening Time during Normal Labor
Authors: Nasution Siti Saidah , Erniyati Erniyati , Hariati Hariati
Published: October 2020

BACKGROUND: The pain feeling and pain are a very frightening condition for the mother while undergoing labor. The fluency in undergoing childbirth is influenced by the mother’s ability to manage labor pain. Good pain management will improve the ability of mothers to undergo labor with good collaboration and speed up the process of complete opening time. The non-pharmacological method used to reduce labor pain intensity is a progressive muscle relaxation technique. Interventions are carried out with movements that combine deep breathing exercises when the muscles are relaxed. This research is a descriptive study using a quasi-experimental approach using two groups, namely, the intervention group and the control group.
AIM: The purpose of this study was to determine the effect of progressive muscle relaxation techniques on reducing pain. The number of samples used was 30 people with accidental sampling technique.
MATERIALS AND METHODS: Research sites in USU Medan Hospitals and maternity clinics. Data collection was carried out using a questionnaire, which consisted of two parts, namely, demographic data and complete opening time (opening 10 cm). Data analysis was performed using independent sample t-test.
RESULTS: Results with significance p < 0.05. The results showed that the intervention with progressive muscle relaxation techniques at the time I could accelerate the complete opening time (opening 10 cm) in the intervention group.
CONCLUSION: Intervention using progressive muscle relaxation techniques is expected to be applied as an intervention in the management of labor pain and speed up the opening process.
Predictors of Changing Level of Work Ability Index Among Employees of Public and Industrial Sector
Authors: Imamovic Hasad , Nurka Pranjić
Published: October 2020

AIM: The aim of the study is to evaluate work ability index with individual and work condition factors; and comparatively evaluate the predictors of WAI levels in the field of individual and workplace factors all within the public administration sector and industrial sector employees.
METHODS: The longitudinal survey included 500 respondents (the total sample = 300, response rate was 60%, and mean age 40.78) in two cohorts: 171 (57%) employees of the public administrative and health sectors (cohort 1) and 129 (43%) workers of the manufacturing sector (cohort 2). The men comprised 152 (51%) of the study population. The work ability index (WAI) questionnaire was used to evaluate the work ability and its predictors.
RESULTS: Decreased level of WAI predicted among all respondents: Larger number of diseases (p < 0.001) and more days of sick leave (p < 0.001). Unexpected protectors for increased level of WAI among public service employees were: Higher mental demands of work (β = 0.220, 95%CI, 0.723–1.301, p < 0.001), as among industry sector workers higher physical demands of work (β = 0.198, 95%CI, 0.824–1.234, p < 0.001), and higher mental demands of work (β = 0.137, 95% CI, 1.888–2.050, p < 0.001), too.
CONCLUSION: The determinants of WAI are mental capacity and physical endurance, and a high level of education. The number of chronic illnesses, long sick leave, lower levels of education or reduced levels of continuing lifelong education and worse self-prognosis of work over the next 2 years all significantly affect the decrease or loss of working capacity.
John F. Kensett (1816-1872) et les milieux esthétiques et politiques de la côte Est américaine
Authors: Jullion Matthias
Published: October 2020

La côte Est américaine au xix e  siècle redéfinit l’art national américain. Au centre de cette réflexion, on retrouve l’artiste John F. Kensett (1816-1872). Figure issue des milieux esthétiques et politiques de la côte Est américaine, son travail fut fondamental dans l’élaboration des bases pour l’épanouissement d’un art national américain. Kensett joua de ses relations au sein des nombreux clubs et sociétés new-yorkais pour mettre au centre des discussions la formation et le rôle de l’artiste, et l’élaboration d’un musée national.
De grandes retrouvailles à l’échelle humaine ? Les relations entre les Canadiens-français et la population française durant la Première Guerre mondiale
Authors: Dallaire Frédéric
Published: October 2020

L’historiographie des relations entre la France et le Canada français fait état d’une période creuse de ces relations durant la période séparant la Conquête britannique de 1763 et la relance diplomatique franco-québécoise des années 1960. Grâce à l’analyse de témoignages écrits, cet article tente de démontrer en quoi la présence de milliers de Canadiens-français en France durant la Première Guerre mondiale (de 1915 à 1919) fut une opportunité pour de grandes retrouvailles à l’échelle humaine entre ces Canadiens-français et une partie de la population française.
Histoire et représentations au cinéma : Cuba dans l’imaginaire américain à la fin de la Guerre froide (1980-1999)
Authors: Berthier Clément
Published: October 2020

En 1959 la révolution castriste a été à la fois un choc pour le gouvernement américain et un modèle pour les mouvements de contre-culture des années 1960. Le personnage de Fidel Castro a ainsi suscité de nombreuses représentations au cinéma, souvent biaisées car elles sont associées à un contexte historique particulier, que ce soit le retour à l’anticommunisme des années 1980, ou la crise du régime dans les années 1990.
Production of lipids and natural antioxidants from passion fruit seeds
Authors: Reis C. C. , Mamede A. M.G.N. , Soares A. , Freitas S. P.
Published: October 2020

The wild passion fruit species Passiflora setacea, Passiflora alata, and Passiflora tenuifila are native to the Brazilian biomass. The seed waste generated from the extraction of passion fruit juice contains functional polyunsaturated fatty acids and phenolic compounds. The aims of this study were to obtain lipids and natural antioxidants from passion fruit seeds. Passion seed oils were extracted using a lab-scale continuous press and their oxidative stability was evaluated using the Rancimat® method. Higher antioxidant extract capacity was observed when using an ethanol-water solution (70:30) at 45 ºC. In these cases, the total phenolic contents expressed as gallic acid equivalents from P. setacea, P. alata, and P. tenuifila cakes were approximately 1800, 600 and 900 mg·100g−1 of extract. Induction periods increased up to two-fold when adding these extracts to their respective seed oil. Therefore, passion fruit seed extract can contribute to increasing the oxidative stability of polyunsaturated oils.
Écritures de Résistance. Luisa Valenzuela et María Elena Cruz Varela face à l’oppression
Authors: Ballesteros Rosas Luisa
Published: October 2020

Pendant une grande partie du XXe siècle, l’Amérique latine s’est vue impliquée dans la guerre froide. Des régimes autoritaires des deux modèles politiques confrontés excellèrent par leurs méthodes répressives dénoncées dans les œuvres de Luisa Valenzuela, pour l’Argentine, et María Elena Cruz Varela, pour Cuba. Cette écriture de résistance dépasse les tabous sexuels et politiques et place l’action et le témoignage des femmes dans les évènements historiques, en tant qu’acteurs ou victimes. Elles élaborent une sorte d’écriture refuge et font de la parole une arme contre la paralysie de la peur et l’impuissance, la prison, la persécution politique ou la disparition. Les deux auteures emploient des procédés d’écriture innovants et cherchent un langage approprié pour montrer, par la subtilité de la métaphore, une réalité grave difficilement appréciable de l’extérieur.
Poésie par effraction : textes traduits de José María Gómez Valero, David Eloy Rodríguez et David Franco Monthiel
Authors: Rodrigues Judite
Published: October 2020

Dans le panorama de la poésie espagnole contemporaine, il est des voix réfractaires organisées en « récommunes » qui, articulant le poétique et le politique, désertent les perspectives balisées d’une écriture aseptique, amnésique et auto-satisfaite. Le collectif La Palabra Itinerante en est. Créé en Andalousie en 1992, il travaille à différentes hybridations des formes d’art et devient le lieu où l’écriture se donne pour objectif l’agitation des consciences (« colectivo de agitación y expresión ») et la déconstruction des machines à discipliner. Cet article présente brièvement l’œuvre de trois poètes, José María Gómez Valero (Séville, 1976), David Eloy Rodríguez (Cáceres, 1976) et David Franco Monthiel (Cádiz, 1976), en mettant au jour quelques pratiques poétiques dominantes : le primat du commun, le détournement, l’écriture du slogan, les formes cursives et denses. Une anthologie de textes traduits complète cette présentation.
An Investigation of Collaborative Consumption Engagement and the Interaction With Self-Identity
Authors: Choi Youngkeun
Published: October 2020

The purpose of this study was to investigate the relationships between motivation factors and collaborative consumption engagement and explore the moderating effect of self-identity on that relationship. For this, the present study collected data from 228 college students in South Korean through a survey method. In the results, first, the more sustainability or economic benefits participants perceive in collaborative consumption platforms, the more they are engaged in collaborative consumption. Second, a positive relationship between perceived sustainability and collaborative consumption engagement is stronger for participants in collaborative consumption platforms high rather than low in interdependent self-view. However, interdependent self-view was found to have no significance in the relationship between perceived economic benefits and collaborative consumption engagement.
Communication in the Age of a Global Pandemic
Authors: Constant Jean , DeLaTorre Pacheco Sindy
Published: October 2020

The COVID-19 pandemic is affecting communities worldwide today in many novel ways. The rapidity at which the disease is transmitted and the amount of information available in real-time creates a unique situation. This research, based on qualitative remediation at the community level, provides a fertile ground from which significant patterns are emerging. The authors reviewed the literature available as well as over 100 individual sites of local administrations, faith-based, NGOs, local charitable and community initiatives. It is premature to project an accurate picture of how to alleviate best the distress caused by a pandemic. However, some significant and credible patterns have emerged that lead to conclude that, next to transparency, initiatives based on proactive use of peer to peer e.communication, direct e.outreach, and e.collaboration between parties lead to constructive and successful initiatives.
Estado y educación en Argentina
Authors: Canavese Mariana
Published: October 2020

Dentro de la recepción de las propuestas del filósofo francés Michel Foucault en la historia argentina reciente, un conjunto de lecturas e intervenciones se produce en espacios vinculados con la educación y la pedagogía. En la Argentina de la década de 1990, las elaboraciones del filósofo constituyen una referencia significativa en la agenda educativa: operan respecto de la problemática del poder, la autoridad y el control en el aula, en análisis de las experiencias educativas y en relación con el pensamiento pedagógico en general. En este artículo se reconstruyen y analizan algunas lecturas y apropiaciones de la ‘caja de herramientas’ foucaultiana relacionadas con el área educativa y destinadas a pensar la reforma cristalizada con la sanción de la Ley Federal de Educación en 1993.
"Historias da nossa terra"
Authors: Silva Márcia Cabral da
Published: October 2020

Este artigo apresenta um recorte de um estudo sobre livros escolares de leitura em circulação no Brasil nas primeiras décadas do período republicano. De modo específico, examinou-se o livro Historias da nossa terra, escrito por Julia Lopes de Almeida e publicado originalmente em 1907. O estudo orientou-se pela seguinte questão: de que modo Historias da nossa terra e inseriu na morfologia dos livros escolares de leitura, cuja materialidade e conteúdo veicularam um padrão cívico e patriótico referido à nação brasileira republicana? A fundamentação teórica ancorou-se em estudos da história da educação e da história cultural. O livro se alinhou aos livros escolares do período e contribuiu para a construção da nação brasileira por meio do impresso.
O centenário da independência brasileira em nossas escolas primárias
Authors: Costa Patrícia Coelho da , Costa Soares Jefferson
Published: October 2020

O artigo propõe um estudo sobre como os inspetores de ensino, agentes do Estado, especialistas em ensino de história e historiadores pretenderam se apropriar das comemorações do centenário da independência brasileira para afirmar uma determinada visão deste fato histórico na escola primária. Por meio da análise documental da revista A Escola Primária, o tema foi tratado sob duas perspectivas. A primeira são as disputas historiográficas. A segunda é a dimensão pedagógica a partir do processo de transposição didática. Os resultados da pesquisa indicam os investimentos de especialistas na narrativa histórica escolar sobre a independência brasileira praticada no ensino primário, à medida que era importante via de consolidação da identidade nacional
Venho por meio desta
Authors: Alves Kelly Ludkiewicz
Published: October 2020

Contamos a história do ‘Movimento de Educação de Base’ (MEB) em Pernambuco, através da experiência dos monitores e alunos, que por meio das cartas deram visibilidade aos limites e às suas expectativas em relação à alfabetização. Partindo da história cultural e da história da cultura escrita, apresentamos as características de produção, circulação e o conteúdo das cartas, que em diálogo com a história da educação, permitiu identificar na experiência cotidiana as estratégias mobilizadas para o funcionamento das escolas radiofônicas, que possibilitaram a formação de uma comunidade de escreventes, em torno do intercâmbio epistolar e da circulação dos conteúdos educativos pelo rádio, práticas que transformaram as escolas radiofônicas em espaços de aprendizagem, produção e circulação da cultura popular.
Abordagens em livros didáticos de História do Brasil sobre a presença brasileira no Cone Sul Latino-Americano, no século XIX
Authors: Mendes Salles André , Batista Neto José
Published: October 2020

Constituiu objetivo da pesquisa em identificar e caracterizar abordagens em livros didáticos de História do Brasil em relação à presença brasileira na região platina, na segunda metade do século XIX. Foi selecionado um total de 13 livros didáticos de diferentes temporalidades, compreendendo o período de 1886 a 1999. A seleção dos livros observou critérios como possuir inúmeras edições, ter sido adotado por escolas das redes de ensino da educação básica e o lugar socioinstitucional dos autores. A análise das fontes se fez por meio da técnica da análise de conteúdo. Caracterizamos três conjuntos de autores com concepções diversas. Apesar disso, foram observadas permanências nas narrativas dos livros analisados, como a do Império brasileiro como garantidor da independência do Uruguai.
Los dilemas en la formación ciudadana
Authors: Romano Antonio Mauro
Published: October 2020

La historiografía de la educación en el Uruguay no ha reparado en las contradicciones en el proceso de constitución del bachillerato que se dictaba en la Universidad de la República durante todo el siglo XIX. Es llamativa la falta de mención de la instrucción militar que se incluyó en el programa de enseñanza secundaria en 1887, en el momento en que se consolida el curriculum del bachillerato en Ciencias y Artes y paradojalmente cuando el ciclo militarista se encontraba ya en la fase de retirada. El objetivo de esta ponencia es analizar los argumentos que justifican esta inclusión tan tardía de la instrucción militar en la formación universitaria y la formación normalista, a partir del trabajo que combina los archivos institucionales y los archivos personales.
Metal-Containing Monomers Based on Copper and Zinc Salts of Unsaturated Acids and Pendent 4-phenyl-2,2′:6′,2′′-terpyridine Ligands: Synthesis, Characterization and Thermal Properties
Authors: Baimuratova Rose K. , Dzhardimalieva Gulzhian I. , Zhinzhilo Vladimir A. , Kydralieva Kamila A. , Uflyand Igor E.
Published: October 2020

Metal-containing monomers based on maleates of copper and zinc, cinnamate of copper and acrylate of zinc with 4-phenyl-2,2′:6′,2′′-terpyridine ligand were prepared for the first time and characterized using a number of analytical techniques including infrared spectroscopy, elemental analysis and thermal gravimetric analysis. According to the results of the thermal analysis, the coordination mixed-ligand complexes based on zinc salts are more stable than copper one both in the case of monocarboxylic acids and dicarboxylic acids. The first stage of polymerization according to results of mass spectra of gaseous products is initiated in accordance with the Borodin–Hunsdiecker mechanism: the initial decarboxylation leads to the formation of carboxy biradicals, which, in turn, cause the polymerization and the formation of polymers. In this paper we also describe facile two-step Kröhnke-type synthesis of 4′-phenyl-2,2′:6′,2′′-terpyridine from 2-acetylpyridine and its NMR spectrum.
Determination of the Composition of Substances Migrating from Plugs Based on Bromo-Butyl Rubber into Infusion and Injection Preparations
Authors: Khakimullin Yuri N. , Zakirova Larisa Yuryevna , Khusainov Alfred D.
Published: October 2020

The results of experimental studies of the composition of individual substances migrating from medical rubber plugs produced both in and abroad based on technical bromobutyl rubber are presented. The quantitative content of volatile organic compounds related to species impurities of gasoline was determined by gas chromatography from a standard glass bottle sealed with a sterile stopper based on bromobutyl rubber. The method of atomic emission spectroscopy was used to determine (indirect) the presence of organometallic, organosulfur and metal-inorganic compounds that did not pass through chromatographic columns, and the presence of organometallic, organosulfur and metal-inorganic compounds was determined by the content of metal and non-metal cations. The results of mass spectral studies of extracts of aqueous extracts from plugs based on bromobutyl rubber showed that they contain impurities of bromo-alkanes and bromo-arenes, which are direct-acting carcinogens.
Composite Bitumen Binders Based on an Active Powder of Discretely Devulcanized Tire Rubber
Authors: Gorbatova Victoria N. , Gordeeva Irina V. , Dudareva Tatiana V. , Krasotkina Irina A. , Nikol'skii Vadim G.
Published: October 2020

Composite binders (CB) for road construction, based on bitumen and active powder of discretely devulcanized rubber (APDDR), obtained by the method of high-temperature shear grinding (HTSG), are considered. The formation of CB occurs with the introduction of APDDR in bitumen during the preparation of the asphalt mixture. The advantages of CB compared with bitumen in a wide temperature range are shown: a decrease in plastic deformations at high temperatures, an increase in fatigue life and resistance to the formation of low-temperature cracks.
Synthesis of Aromatic Polyethersulfones
Authors: Sultigova Zakhirat , Inarkieva Zareta , Kharaev Arsen , Bazheva Rima , Parchieva Maryam
Published: October 2020

Modified aromatic polyethersulfones containing dichloroethylene and arylate groups in the main chain were modified . The kinetics of the synthesis of polyethersulfones by the method of acceptor-catalytic polycondensation was studied. By the methods of IR spectroscopy, elemental, X-ray phase analysis, the formation of polymers of a given structure is proved. It is shown that the property of the obtained polymers depends on the ratio of the starting monomers.
One-Component Urethane Sealants Synthesis
Authors: Zhukova Irina V. , Tabachkov Aleksandr A. , Ivanova Svetlana N. , Valeev Ilnar A.
Published: October 2020

It is proposed to synthesize one-component light-resistant urethane compositions using aldimines as crosslinking agents and methyl iodide as an activating agent to obtain sealants. The effect of the methyl iodide activator and the quaternized complex of the imine group and temperature on the cure time of the sealants was investigated. The influence of the polyether molecular weight and the structure of aldimines fillers on the physical and mechanical properties of the obtained sealants was studied.
Reinforcement of Elastomers Based on Butadiene Rubbers and their Mixtures with Layered Silicates
Authors: Ibragimov Marat A. , Shishkina Nelly N. , Zinovjeva Elena G.
Published: October 2020

The rubber compounds based on BR and on mixtures BR with EPDM containing experimental organoclay samples based on bentonites from the “Sarinskoye” deposit (Orenburg Region, Russia), additives to polymers Cloisite® 10A manufactured by Southern Clay Prod. () were compared. The increase of tensile strength at break by introduction of organoclay in rubber compounds based on BR and on mixtures BR with EPDM was determined. The compatibility of rubbers with the introduction of organoclay in the mixture BR with EPDM was improved
Synthesis and Application of Copolymers Based on Styrene, Divinylbenzene and Functionalizing Monomers
Authors: Rakhmatullina Alevtina P. , Ibragimov Marat A. , Akmyradov Ahmet
Published: October 2020

The “cross-linked” copolymers based on styrene, divinylbenzene, and functionalizing monomers namely ethylene glycol dimethacrylate and liquid hydroxyl terminated polymer of butadien Polybd® R-20 LM Resin by miniemulsion polymerization in the presence of a co-stabilizer – hexadecane were prepared. The largest copolymer yield for both functionalizing monomers by amount of hexadecane 5 % wt. was achieved. The industrial latex SKS-30 ARKM-15 by the obtained copolymers in the process of salt coagulation was modified. The mechanical characteristics of vulcanizates made on the basis of rubber SKS-30 ARKM-15, modified by obtained copolymers were studied.
New Plasticizers on the Based on 2,5-Furandicaboxylic Acid and 5,5-Oxy-Bis(methylene)bis-Furane-2-Caboxylic Acid Diesters
Authors: Klushin Victor , Shabliy Ekaterina A. , Smirnova Nina V.
Published: October 2020

For the first time, the possibility of synthesis of 2,5-furandicarboxylic acid (FDCA) and 5,5-oxy-bis (methylene) bis-furane-2-caboxylic acid (OBFA) diesters and using them as plasticizers of various polymers have been studied. The most effective method for the synthesis of furan diesters is the direct esterification of FDCA or OBFA with the corresponding aliphatic diols С4-С10. Methods for the synthesis of these diesters with the yield of the target product from 45 to 85 % have been developed. The physical properties and plasticizing ability of the obtained 14 diesters were investigated. The plasticizing ability of the obtained diesters with respect to polyvinyl chloride (PVC), polystyrene (PS) and polymethyl methacrylate (PMMA) was studied. The plasticizing effect depends on the chain length of the aliphatic diol and the nature of the polymer. In general, the synthesized diesters have a stronger plasticizing effect on PS than on PVC and PMMA due to the higher stiffness of the PS chain. The plasticizing ability of the synthesized furan diesters that can be obtained from renewable plant materials is slightly inferior to industrial plasticizers based on phthalic and adipic acids, and are potentially able to replace standard plasticizers derived from hydrocarbons.
Triethylene Glycol Dehydration by Thermopervaporation
Authors: Golubev Georgiy S. , Podtynnikov Ivan A. , Balynin Alexey V. , Borisov Ilya L.
Published: October 2020

A wide range of membranes (hydrophobic and hydrophilic) for the task of triethylene glycol dehydration by thermopervaporation was studied. The transport characteristics of the membranes using individual liquids (water, triethylene glycol) were determined in the thermopervaporation process with varying temperature of the feed flux (40-). The maximum water flux (3.7 kg/m2∙h) in all the studied temperature ranges was demonstrated by the commercial pervaporation hydrophobic PolyAn membrane. For the commercial hydrophilic membrane MDK-I water flux at 80 °С was 2.8 kg/m2∙h. During thermopervaporation of triethylene glycol in the studied temperature range, TEG flux through the membranes was not observed, which shows the advantage of this process for TEG dehydration. For the first time, experiments were provided using PolyAn membranes to removal water from TEG by thermopervaporation with porous condenser. The maximum permeate flux (1.9 kg/m2∙h) was achieved for the PolyAn membrane at a concentration of 70 % wt. TEG in water
Properties of Hyperbranched Polyglycidol’s Derivatives
Authors: Mikhailov Yuri , Romanova Ludmila , Darovskikh Anna , Garifullin Nilson
Published: October 2020

Some properties (enthalpy of formation, glass transition temperature and rheological parameters) of hyperbranched polyglycidol derivatives containing nitrate and azide functional groups were investigated. The dependence of the found properties on the molecular weight, composition and structure of the investigated substances was determined.
Modeling of Residual Stresses in a Polymer Cylinder Arising from Rotation and Cooling of the Starting Material
Authors: Lesnyak Liubov I. , Yazyev Batyr M. , Avakov Arthur A. , Dubovitskaya Ludmila L.
Published: October 2020

The determination of the stress-strain state of a polymer cylindrical body causes many difficulties. Due to the fact that the properties of polymers are dependent on a number of factors, including temperature. If there is a change in temperature along the radius during the manufacture of the product and production directly depends on dynamic loads, for example rotation, this factor can fundamentally change the distribution of stresses and strains in the thickness of the investigated structure. The body may develop significant residual stresses that reduce the operational quality of the product. Neglect of this factor can have a catastrophic effect on the reliability of the structure as a whole.
Complex Stabilizer Based on Calcium and Zinc Stearates for PVC Compounds
Authors: Borukaev Timur A. , Kitieva Luiza I. , Sultigova Zakhirat , Martazova Rukhsara M.
Published: October 2020

Compounds based on polyvinylchloride plasticate containing a complex stabilizer based on salts of calcium and zinc stearates were obtained. The thermal properties of the obtained compounds are investigated. It was found that the introduction of a complex stabilizer in PVC compound leads to increased thermal stability of the compound. It is shown that the complex stabilizer affects the destructive processes that occur in the polymer matrix at elevated temperatures. It was found that the introduction of a complex stabilizer based on a mixture of calcium and zinc stearates in polyvinyl chloride plastics results in materials with improved processability.
Influence of Different Factors on the Oxidizing Polymerization of 3-Amino-3 ́-Nitrodiphenylazomethine and some Properties of the Received Polymer
Authors: Borukaev Timur A. , Otarova Rauzat M. , Salamov Ali Kh. , Orlov Andrei V.
Published: October 2020

The oxidative polymerization of 3-amino-3 ́-nitro-diphenylazomethine was carried out in various ways. In this case, the effect of the concentration of monomer and initiator, their ratio, temperature and reaction time, on the yield and molecular weight of the polymer was studied. The morphology is established, the size of the polymer particles and their distribution are determined. It is shown that the synthesized polymer has increased electrical conductivity and is active in redox processes.
The Aging, Biodegradation and Toxic Effects of the Polymer Biomedical Implants in Dental Practice
Authors: Davidovsky Anatoly G.
Published: October 2020

Has been analysed the aging, biodegradation and toxic effects of biomedical implants in dentistry. Physico-chemical aspects of aging as well as biodegradation and toxicity of polymer dental implants were viewed. The prospects of development and application of polymer smart implants in dentistry are described.
Preparation of R-BABP Polyimide Fibers via Wet Spinning of Polyamide Acid
Authors: Vaganov Gleb , Didenko Andrey , Ivan’kova Elena , Popova Elena , Elokhovskii Vladimir , Volkov Alexey V. , Borisov Ilya L. , Yudin Vladimir E.
Published: October 2020

A polyamide acid (PAA) based on diamine 4,4'-bis (4-aminophenoxy) diphenyl and 1,3-bis (3',4-dicarboxyphenoxy) benzene dianhydride was synthesized. PAA fibers were obtained by wet spinning. Then, these fibers were converted into polyimide by thermal imidization. Dependence of the structure and properties of fibers on the die drawing and the composition of the coagulation bath was studied. It is shown that the composition of the coagulation bath has a significant effect on the morphology and mechanical properties of polyimide (PI) fibers. To obtain defect-free fibers, a coagulation bath consisting of ethylene glycol/ethanol at 50/50 vol. % was found to be optimal. An increase in the die drawing of fibers from 1 to 2 times leads to an increase in tensile strength and strain at break of the polyimide fibers.
Effect of Non-Equilibrium Low Temperature Plasma on Genuine Leather Adhesion Properties of Special Purpose Footwear Upper to Molding Compositions with Polyurethanes Base
Authors: Makhotkina Liliia Yu. , Tikhonova Natalia , Zhukovskaya Tatiana , Garipova Guzel I. , Kovalenko Yuliia A. , Fatkhullina Leysan R. , Bil (Khristoliubova) Valeriia I.
Published: October 2020

Roughing operation is used to improve the adhesive properties of footwear upper to footwear bottom polyurethane compositions in the manufacture of special purpose footwear with an upper made of genuine leather by the injection molding method of attachment. Roughing operation is an operation of coating removal and partial removal of the front layer from the protracted edge of footwear upper workpiece. This operation has a disadvantage, it often causes technological defects. A method for increasing the adhesive properties of genuine leather special purpose footwear upper workpiece with a front layer by means of non-equilibrium low temperature plasma modification and technological scheme that allows this operation to be integrated into the production process are considered in the article.
Synthesis and Properties of Polymers Based on N-Vinyl-Pyrrolidone and Halogen-Containing Compounds of Acrylic Acids
Authors: Malkanduev Yusuf A. , Begieva Madina B. , Kokoeva Aneta A. , Mikitaev Muslim A. , Dzhalilov Аblulakhat T. , Vindizheva Madzera K.
Published: October 2020

The paper presents the results of the copolymerization of α-halogens of acrylic acid and N-vinylpyrrolidone in the presence of a radical initiator. The copolymerization equations are presented and activity factors are calculated. IR spectra of the obtained copolymers confirm the amination reaction. The synthesized aminated polymers form intramuscular compounds with divalent metal halides at room temperature. The kinetics of the copolymerization reaction of these systems shows that the presence of a reactive halogen atom in the structure of the copolymer has a great influence on the formation and properties of the copolymers.
CO2 Absorption/Desorption on Gas-Liquid Membrane Contactors Using Monoethanolamine Solvent: Comparison of Porous and Composite Hollow Fibers
Authors: Kostyanaya Margarita I. , Novitskii Eduard G. , Bazhenov Stepan D.
Published: October 2020

The operating efficiency of asymmetric porous and composite membranes with a thin non-porous selective layer was compared in the processes of CO2 absorption and desorption in gas-liquid membrane contactors using aqueous solutions of monoethanolamine (MEA) with low concentration (<14 %). Composite membranes were prepared by direct deposition of poly (1-trimethylsilyl-1-propyne) (PTMSP) in a hollow fiber membrane module. The effects of gas flow rate and MEA solvent linear velocity on the CO2 mass transfer were evaluated. Porous membranes were shown to be more effective in the process of CO2 absorption, because they allow to remove more than 90 % of CO2 from the gas mixture during one pass of the solvent through the contactor. Composite membranes were more promising for CO2 desorption, since they provide half as much of the solvent vapor losses with comparable desorbed CO2 fluxes (0.12-(STP)/(m2·h)). The contributions of membrane and liquid phase to the overall mass transfer resistance during the CO2 absorption process were estimated. It was demonstrated that deposition of a thin selective layer from a highly permeable PTMSP with a thickness of only 3 μm increases the membrane contribution to the total mass transfer resistance from 10-20 % to 60-80 %.
Isomerization of Allyl Derivatives of Bisphenol A
Authors: Lisovenko Vladimir A. , Yudaev Pavel A. , Chistyakov Evgeniy M.
Published: October 2020

4,4'-diallyloxy-2,2-diphenylpropane, based on bisphenol A and allyl bromide wassynthesized. The thermal properties of the obtained products were studied using thermogravimetricanalysis and differential scanning calorimetry. The process of thermal isomerization of allyl groupsin 4,4'-diallyloxy-2,2-diphenylpropane, which is a Claisen rearrangement, was discovered. Allcompounds were characterized by 1H NMR spectroscopy.
Working out the Method of Obtaining Radio-Absorbing Composite Material Based on Magnetite Nanoparticles and Polydimethylsiloxanes
Authors: Maltsev Alexander A. , Bibikov Sergei B. , Maltseva Irina E. , Marnautov Nikolay A. , Komissarova Lyubov Kh. , Elfimov Anton B.
Published: October 2020

The work presents the investigations of working out the method of obtaining radio-absorbing composite material based on magnetite nanoparticles and polydimethylsiloxanes. The electron microphotographs of nanoparticles were obtained and the radio-physical characteristics of material in the frequency band of 0.1-8 GHz were measured.