bluuebunny/crossref_metadata_2025 huggingface dataset:
Demystifying Role of Phonetics in Complete Denture
Authors: Tanvi Rajesh Balwani  , Surekha Godbole Dubey  , Seema Sathe  , Aditi Chandak
Published: March 2021

Speech, as formulated, perceived and decoded, is unique to humans. Speech is a learned process which makes use of the anatomical structures designed primarily for deglutition and respiration. The production of sounds requires selective modification and control of an outgoing air stream, which originates from the respiratory apparatus. Speech is a very sophisticated autonomous and unconscious activity. Speech in matured man in a learned habitual neuromuscular pattern which makes use of anatomical structures designed primarily for respiration and deglutition. Because oro-dental morphological features also may influence an individual speech, the dentist should therefore recognize the possible role of prosthetic treatment on speech activity. The loss of teeth and supporting structures alters the main articulatory cavity and produces a marked effect on the speech pattern proportionate to the location and magnitude of alterations. An empiric approach to the phonetic factor in denture construction frequently places the burden for compensating for speech changes for the adaptability of the tongue. Additionally, significant is the fact that the speech mechanism is highly susceptible to degenerative diseases. If dentures are to contribute effectively to the functions of speech, dentists should utilize studies in the speech science field to augment their clinical knowledge of the phonetic factor in denture construction.
Does Corporate Social Responsibility Disclosure Have Relevance To Profit And Book Value?
Authors: Listyaningrum Indhung , Titisari Katika Hendra , Nurlaela Siti
Published: March 2021

This research was aimed to examined and analyzed the value relevance of accounting information by disclosured of Corporate Social Responsibility (CSR) as a moderating variabel in banking sector companies. The population of this research was by 11 banking companies registered on the BEI (Bursa Efek Indonesia) in the period of 2015 -2018. From the population, reasearcher found 44 samples by used purposive sampling method. The hypothesis test of this research used multiple linear regression by Moderated Regression Analysis (MRA) approach. The independent variables of this research were earning and book value. CSR as an independen variable and moderating variable. While the dependent variable was the stock price. The result of this research was to indicated that the earning and book value were relevance to the value of accounting information. While CSR disclosure as an independent variable and moderating variable didn’t have relevance to the value of accounting information. The moderating result of CSR disclosure weren’t able to substantiated the earning and book value.
Perbandingan Aturan Perlindungan Privasi Atas Data Pribadi Antara Indonesia Dengan Beberapa Negara
Authors: Tsamara Nadiah
Published: March 2021

The development of information and communication technology shows a significant increase. In the development of information technology and technology, personal information consisting of names, e-mails and cell phone numbers is very valuable data because there is economic value obtained in the business world, but technology can also be very dangerous if its use is not restricted, such as in the case of not protecting personal data, while privacy of personal data is important because it involves a person's dignity and freedom of expression, but data is not protected because in Indonesia there is no obligation in positive law which specifically regulates and provides sanctions for violations. This study aims to discuss the regulation in the perspective of comparative law in Europe, America, Hongkong, Malaysia, Singapore, South Korea, and Japan. This study uses normative legal research using asttutory approach and comparative approach that examines and analyses legal sources. This study discovers that the regulation of personal data protection in Indonesia has not been fully and thoroughly regulated compared to the regulations in several other countries, that there is a need for legal harmonization of personal data protection that is mature and deep
A Geopolítica da Política Externa do Pragmatismo Ecumênico Responsável (1974–1979): o Papel do Ministério das Relações Exteriores
Authors: Cursini Caio
Published: March 2021

Este artigo analisa a geopolítica e a política externa durante o governo de Ernesto Geisel a partir de documentos da diplomacia brasileira, apontando a existência de um pensamento geopolítico da política externa originada no próprio Ministério das Relações Exteriores. Para isto, exploramos as relações externas brasileiras no Cone Sul, África, Oriente Médio, China e Cuba a partir de documentos da política externa brasileira disponíveis no Centro de Pesquisa e Documentação de História Contemporânea do Brasil (CPDOC), além da análise de documentos da Escola Superior de Guerra (ESG).
What is the purpose of “multipurpose forces”? The case of the Colombian armed forces in the “post-agreement”
Authors: Saint-Pierre Héctor Luis , Ferreyra Matías Daniel
Published: March 2021

In this article, we analyze possible models of military modernization to Colombia from the “post-agreement” stage initiated with the guerrilla group FARC, considering implications on management and perception in the domestic, regional, and global order. We contemplate the “Multimission Force” model and the “Specialized Force” model, to conclude the latter as the best fit for Colombia and that could be mirrored to all of Latin America.
Tecnologias Militares Emergentes: Digitalização e a Third Offset Strategy Estadunidense
Authors: Borne Thiago
Published: March 2021

Com o final da Guerra Fria, a digitalização das forças armadas se tornou a ordem do dia nos Estados Unidos. Desde então, o país vem investindo no desenvolvimento de uma série de vetores tecnológicos que prometem preservar sua supremacia militar e manter o seu papel de destaque nas relações internacionais nas próximas décadas. O presente artigo tem caráter exploratório. Nesse sentido, busca identificar esses vetores e analisar as possíveis implicações que seu desenvolvimento e adoção poderão trazer para as forças armadas norte-americanas. Destaca-se, assim, a importância de tecnologias ciber; big data; nanotecnologia; armas de energia direta; sistemas espaciais; melhoramento humano; e robótica para o desenvolvimento das capacidades estadunidenses. Conclui-se que o processo de offset traz consigo uma necessidade de reflexão profunda, especialmente entre países emergentes, a respeito de suas próprias capacidades e oportunidades de modernização, sem que isso resulte, necessariamente, na emulação do processo estadunidense.
Controlar os militares? Uma análise da dimensão de accountability sobre a atuação doméstica das Forças Armadas no Brasil
Authors: Passos Anaís Medeiros
Published: March 2021

O artigo analisa a accountability sobre as operações de garantia da lei e da ordem. A partir de entrevistas com tomadores de decisão e atores da sociedade civil, que foram codificadas e analisadas através do software Nvivo, a pesquisa conclui que o controle civil está concentrado antes do início das operações militares.
Pacificação à brasileira? O paradigma de Caxias e os militares no governo de Jair Bolsonaro
Authors: Rodrigues Gilberto Marcos Antonio , Maciel Tadeu Morato
Published: March 2021

Este artigo aborda o conceito de pacificação, através da atuação de Caxias, patrono do Exército Brasileiro, e do uso de sua imagem pelo Presidente Bolsonaro e pelos militares brasileiros na contemporaneidade. Analisa-se, em termos políticos e sociais, o paradigma de Caxias como pacificador do Segundo Império e o que os autores identificam como “pacificação à brasileira”, a partir de intervenções recentes no Haiti e no Rio de Janeiro. A apropriação de Caxias como eixo simbólico para as pacificações contemporâneas remete à identidade do Exército enquanto agente “moderador”, fornecendo importantes indícios sobre eventuais objetivos que os militares, com Bolsonaro, almejam alcançar.
Relações EUA-África: os 10 anos de estabelecimento do Africom (2007-2018)
Authors: Pessin Adam Gabriel , Xavier Schutz Nathaly
Published: March 2021

Os Estados Unidos criaram o Africom em 2007, modificando sua atuação na África. Utilizando a perspectiva do realismo estrutural, o objetivo do artigo é identificar os objetivos dos Estados Unidos com o Africom, e analisar as ações do Comando até 2018. Entende-se que as metas de Washington foram parcialmente atingidas.
A “identidade da CPLP no domínio da defesa”: uma visão ampliada para a cooperação em defesa
Authors: Rizzi Kamilla Raquel , Bernardino Luís Manuel Brás
Published: March 2021

A principal ideia referente à Comunidade dos Países de Língua Portuguesa (CPLP) é a de ser uma organização internacional que partilha uma matriz comum histórico-cultural-linguística, apostando no desenvolvimento da cultura e da língua portuguesa, e que vem se afirmando no sistema mundial pela adoção de uma inovadora e pragmática visão político-estratégica para a cooperação entre Estados-membros. Visão esta que na área da Defesa se torna evidente com os conceitos-chave: mares/oceanos; geopolítica/geoestratégia e cooperação/parceria. A presente pesquisa pondera sobre quais as motivações  dessa visão geoestratégica da CPLP que resultaram no documento intitulado “Identidade no Domínio da Defesa”. Metodologicamente, a pesquisa utiliza a abordagem qualitativa com o método hipotético-dedutivo, classificando-se como descritivo-explicativa aos objetivos. Quanto aos procedimentos, utilizou-se a revisão bibliográfica e análise documental de fontes primárias e secundárias.
Resenha de BROWN, M. Leann. Regional Economic Organizations and Conventional Security Challenges. Gewerbestrasse: Palgrave Macmillan, 2018. ISBN: 978-3-319-70533-0.
Authors: Ziebell de Oliveira Guilherme
Published: March 2021

Resenha do livro Regional Economic Organizations and Conventional Security Challenges, de M. Leann Brown, que tem por objetivo discutir os motivos para que organizações econômicas regionais assumam funções de segurança convencional.
LINEAR GROWTH OF YOUNG KAZAKH FAT-TAILED ROUGH-HAIRED BREED OF SHEEP
Authors:   Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, YULDASHBAYEV YU.A. , KOSILOV V.I. , NIKONOVA E.A. , KUBATBEKOV T.S. , GUBAIDULLIN N.M. , REBEZOV M.B.
Published: March 2021

The article presents the results of studying the linear growth of rams, boulders and eggs of a short-tailed rough-coated breed of sheep. The infl uence of gender and age on the studied indicators was studied. It was found that measurements of body parts that characterize the development of the chest, such as chest depth, chest width, chest girth behind the shoulder blades, were characterized by the highest growth intensity, and height measurements, as well as oblique trunk length and pastern girth, increased less intensively with age. The advantage in the intensity of growth of the analyzed examples was in the rams.
MILK PRODUCTIVITY, TECHNOLOGICAL PROPERTIES AND FATTY ACID COMPOSITION OF NUBIAN GOAT MILK
Authors:   Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, ZABELINA M.V. , LEDYAEV T.B. ,   Saratov state agrarian University named after N.I. Vavilov, PREOBRAZHENSKAYA T.S. , DANILIN A.V.
Published: March 2021

The article considers data on the main indicators of milk productivity, technological properties and fatty acid composition of milk of Nubian goats.
GENETIC STRUCTURE OF THE KAZAKH FINE-WOOL SHEEP POPULATION BASED ON MOLECULAR GENETIC MARKERS OF DNA
Authors:   Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, YULDASHBAYEV YU.A. ,   TOO “Baiserke-agro Training research and production center”, Republic of Kazakhstan, CHINDALIEV A.E. , NURBAEV S.D. , SEITPAN K.M. , BAIMUKANOV D.A. , ERTAY A.
Published: March 2021

The modern Kazakh population of sheep of the Kazakh fi newool breed is characterized by the following population-genetic indicators: the average number of alleles (N) – 9.5833, the average heterozygosity (expected, not) – 0.8090, the average heterozygosity (observed, but) – 0.6972, the total expected heterozygosity Ht – 0, 8177 and the individual fi xation index (Fis) – 0.1459. 115 alleles were identifi ed, including 89 typical alleles (with a frequency of more than 0.01), 26 private alleles (with a frequency of less than 0.01), and 68.9 eff ective alleles
THE PRODUCTIVITY OF SHEEP OF THE CAUCASIAN BREED WITH DIFFERENT FINENESS OF WOOL
Authors:   Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, LUSHNIKOV V.P. , TSOY K.K.
Published: March 2021

The paper contains the wool and meat productivity depending on their wool fi neness of young sheep of the Caucasian breed.
AUSTRIAN AND HUNGARIAN RESEARCHERS OF THE 19TH – 20TH CENTURIES. THEIR CONTRIBUTION TO THE STUDY OF THE HISTORY AND ARCHIVES OF THE OTTOMAN EMPIRE
Authors:   Russian State University for the Humanities, Chapanov Akhmed K.
Published: March 2021

The article analyzes the role of Austrian and Hungarian researchers of the 19th – 20th centuries in studying the history of the Ottoman Empire. It is noted that the earliest publications of the Ottoman documents were made in the first half of the 19th century. The orientalists J. von Hammer-Purgstall, A. Geway and A. Vambery made a significant contribution to the search for and use of archival documents during this period. In the first half of the 20th century, the Turkish scientists, with the active assistance of several European Orientalists, such as I. Karachon, P. Wittek and L.Fekete, began to reveal the contents of some Ottoman archives and systematize the documents. As a result of the activities of these researchers, a new stage was set in the study of the Ottoman history, diplomacy, and paleography, as well as in the development of archives administration in Turkey. The author concludes that the publication of the Ottoman documents, which contain valuable information about the socio-economic and political life of all the peoples of the Empire, contributed to the further scientific interest and analysis of the Ottoman documents. The studies conducted by the AustroHungarian scientists revealed that the archives of Turkey contain a large number of valuable materials that are important for studies in the history of the Turkish people and the peoples of the Arab countries, the Balkans, Iran, the Caucasus and all the countries that were under the Ottoman rule.
THE CROSSROADS OF THOUGHT. COMMEMORATING ALEXANDER A. ZIMIN
Authors:   National Research Institute of World Economy and International Relations named after Eu.M. Primakov of the Russian Academy of Sciences, Rashkovskii Eugene B.
Published: March 2021

The article is a kind of analytical reminiscence concerning Alexander A. Zimin, an outstanding historian whose sphere of research was medieval Rus’. The paper combines the elements of personal reminiscences with some features of historiographic narration concerning Zimin’s analysis of the Russian 15th century feudal wars in its contrast with official Soviet historical thinking during Zimin’s life. It deals with Zimin’s understanding of the relatively short period of Russian 15th century feudal wars as one of the crucial periods of the civilizational as well as social, civil and cultural history of this country. The author tries to reconstruct one of his last conversations with Alexander Zimin (summer 1978). According to prof. Zimin, the complicated collision of the two Russian socio-cultural archetypes – “landowners” and “peasants” – is one of the focal issues of Russian history as a whole. The paper pays special attention to A.A. Zimin’s half-hidden interpretation of the whole story of the Russian intelligentsia from the Pre-Petrine as well as Post-Petrine times up till now.
EDITOR OF THE “RUSSIA” MAGAZINE. BIOGRAPHY OF I.G. LEZHNEV – ARCHIVAL DOCUMENTS AND PUBLICATIONS. PART 2
Authors:   Russian State Art Library, Mishurovskaya Maria V.
Published: March 2021

The article considers the archival materials and printed sources related to the major milestones of the professional biography of I. G. Lezhnev (1891–1955), the writer and editor of the “Russia” magazine. I. G. Lezhnev’s ideological work in the first part of the 1920s connected with the issuing of «Russia» – the magazine which belonged to the «Smena Vekh» ideological project can be understood through his publications in that magazine, his letters to N.V. Ustryalov published by M. S. Agurskiy, as well as through the resources in the Russian archives. The sequence of events that ended up in the closure of the “Russia” magazine and in deporting its editor, I.G. Lezhnev, “beyond the boundaries of the USSR” are revealed in the documents kept in the funds of the Russian State Archives of the Social and Political History and the Central Archives of the Federal Security Service of the Russian Federation. Following the information provided by the documents of the I.G. Lezhnev’s fund in the Russian State Archives of Literature and Art, the author reviews the professional duties of I.G. Lezhnev – the staff member of the Trade Mission of the USSR in Berlin. The article reviews the sources describing I.G. Lezhnev’s return from Germany to the USSR, the essential role of his ‘extended membership application’ for joining the Party, his autobiographical and repenting “Notes of a Contemporary” which in many ways defined the future of their author; much attention is also drawn to his work in the ‘Pravda’ newspaper and other milestones of his life. The present paper for the first time, analyzed the documents from the private collections, connected with the publication of Lezhnev’s “Notes of a Contemporary” in the USSR.
Florística e estrutura do estrato arbóreo de quintais urbanos do município de Belterra, Pará
Authors: Rayol Breno Pinto , Silva Jéssica Conceição Nunes
Published: March 2021

Estudos de composição florística e estrutura ampliam o conhecimento de informações ecológicas e botânicas e fornecem subsídios ao manejo e conservação da biodiversidade em agroecossistemas, portanto, o objetivo deste trabalho foi avaliar a florística e a estrutura da vegetação arbórea de quintais urbanos do município de Belterra, Pará. Foram amostrados 19 quintais agroflorestais, nos quais foram inventariados todos os indivíduos arbóreos com diâmetro à altura do peito maior ou igual a cinco centímetros (DAP ≥ 5cm). Foram registradas 503 árvores, distribuídas em 39 espécies e 18 famílias botânicas. As espécies mais importantes na estrutura dos quintais agroflorestais avaliados foram Theobroma grandiflorum (372 indivíduos), Hevea brasiliensis (36) e Persea americana (28). Apesar de se localizarem em áreas urbanas, os quintais avaliados são diversificados e possuem grande importância para o suprimento alimentar de famílias amazônicas.
Nitrogen, phosphorus and potassium nutrition on ornamental Ipomoea purpurea growth
Authors: Tavares Armando Reis , Strafacci Letícia Rico , Gonçalves Da Karina Gonçalves , Kanashiro Shoey , Ferreira Mauricio Lamano
Published: March 2021

O estudo objetivou avaliar o efeito de nitrogênio, fósforo e potássio no crescimento de I. purpurea. As plantas foram fertilizadas semanalmente com 50 mL de solução nutritiva modificada de Hoagland & Amon (1950): Nitrogênio com 0; 0,0888; 0,201; 0,6003 ou 1,801 g L-1 de nitrato de amônio; Fósforo com 0; 2,1; 5,5; 10,3 ou 13,5 mL L-1 de ácido fosfórico e Potássio com 0; 0,3728; 1,1183; 1,8638 ou 2,2065 g L-1 de cloreto de potássio. I. purpurea apresentaram alta demanda por N, que resultou em  aumento da área foliar. A maior concentração de N promoveu investimento preferencial nas áreas fotossintéticas, confirmado pela relação folha/raiz. I. purpurea é responsiva a fertilização com fósforo, principalmente para promover o crescimento de caule e raízes. I. purpurea não respondeu à fertilização com K. Os resultados do estudo recomendam a fertilização com 0,2001 g L-1 de nitrato de amônio e 5,5 ml L-1 de ácido fosfórico no cultivo de I. purpurea.
Alterações fisiológicas em juvenis de tambaqui transportados em solução de óleo essencial de Ocimum gratissimum
Authors: Chagas Edsandra Campos , Brandão Franmir Rodrigues , Farias Caio Francisco Santana , Monteiro Patrícia Castro , Batista Erix Dos Santos , Souza Damy Caroline de Melo , Chaves Francisco Célio Maia , Inoue Luis Antônio Kioshi Aoki
Published: March 2021

Óleos essenciais podem ser usados como anestésicos naturais para peixes em diversos procedimentos laboratoriais ou de rotina da piscicultura. Vários são considerados seguros tanto para os peixes como para o ambiente. Entretanto, os seus efeitos como redutores de estresse em peixes necessitam ser avaliados. O transporte é uma das práticas de manejo da piscicultura mais estressantes. O estresse nos peixes pode induzir a consequências indesejáveis como manifestações de doenças e mortalidades. Este estudo avaliou os efeitos do óleo essencial de Ocimium gratissimum em parâmetros fisiológicos de estresse em Colossoma macropomum submetidos ao transporte. Os peixes foram transportados em sacos plásticos sob diferentes concentrações do óleo essencial (0, 5, 10, 15 e 20 mg L-1) por 4 h. Amostras de sangue foram coletadas antes e depois do transporte. As concentrações de glicose e amônia plasmáticas aumentaram e o lactato diminuiu depois do transporte com o óleo essencial diluído na água. Os níveis de proteína plasmática e glicogênio hepático apresentaram variações muito amplas. Os parâmetros sanguíneos não mostraram diferenças entre os tratamentos. Os peixes apresentaram-se recuperados 24 h após o transporte. As concentrações avaliadas do óleo essencial de O. gratissimum não foram eficientes como mitigadores de estresse em tambaqui submetido ao transporte. Estudos adicionais são necessários para avaliações de outras concentrações, bem como a associação com outros produtos e procedimentos.
Industri Budaya dalam Menciptakan Standar Kehidupan Perempuan: Kajian Perkembangan Media
Authors: Batubara Maisaroh
Published: March 2021

Media merupakan salah satu kanal dalam mentransmisikan nilai-nilai budaya berikut perkembangannya. Salah satu hal yang digaungkan media bersamaan dengan perkembangan ini ialah melalui industri budaya. Industri budaya berbicara bagaimana para petinggi media menciptakan pasar dengan standardisasi, masifikasi, dan komodifikasi tertentu. Hal ini bukan menjadi ekspresi dari budaya yang hidup di masyarakat, melainkan hanya sebagai produk dari industri semata. Pembahasan industri budaya tidak pernah terlepas dari bagaimana kehidupan perempuan sebagai salah satu pihak yang menjadi target pasar dari industri budaya, sebab perbincangan tentang perempuan akan selalu menarik banyak pihak dari berbagai sudut pandang dalam melihat fenomenanya. Ini merupakan konsekuensi logis dari media yang hidup dalam sistem kapitalisme: memaksimalkan keuntungan, meminimalkan biaya pengeluaran. Tiga konsep utama dalam industri budaya ini -standardisasi, masifikasi, dan komodifikasi- membangunkan kesadaran palsu perempuan untuk� hidup sesuai dengan selera media. Perkembangan teknologi informasi dan komunikasi menjadi momentum tersendiri bagi para petinggi media menciptakan pasar ini. Hematnya, perkembangan teknologi dalam era digitalisasi ini justru menjadi jalan pintas dalam menyebarluaskan standar-standar tersebut. Perkembangan teknologi ini besifat suportif terhadap optimalisasi komunikasi industri budaya dalam menciptakan dunia dengan standar tertentu. Tujuan dari tulisan ini adalah mencari spesifikasi konten media seperti apa yang menggambarkan bagaimana perempuan dan laki-laki dan mencari tahu bagaimana hard content dan soft content digambarkan. Sehingga tulisan deskripsi ilmiah ini dapat menjadi acuan standar refleksi bagi individu dalam menginternalisasi dan memahami pesan-pesan yang terkandung� di dalam media agar individu dapat lebih kritis dalam melihat konten media yang ada. Melalui tulisan ini pula, seharusnya praktisi media mulai menyadari bahwa semestinya diciptakan kategori baru yang seyogyanya menggambarkan perempuan dan laki-laki pada konten yang lebih umum. Metode yang digunakan peneliti adalah metode analisis konten didukung dengan studi literatur dan dokumen terkait. Penulis mengumpulkan 30 artikel dari media berita online, hasil dari kajian penelitian menunjukkan, hard content yang berat membahas bisnis, olahraga, kejahatan, dan pengetahuan/teknologi cenderung disematkan kepada laki-laki. Soft content yang berat membahas tentang dunia fashion, kecantikan, edukasi, keuangan pribadi, makanan dan perjalanan, kesenian, serta hiburan, biasanya lebih disematkan kepada kehidupan perempuan oleh media.
The Value of Javanese Philosophy in Society as a Form of Mass Communication in the Context of the Implementation Element of Covid 19 Handling and SDGs
Authors: Susdarwono Endro Tri
Published: March 2021

The purpose of this study is to raise the values that exist in the main Javanese philosophy which is communicated by the masses in the roots of society as the capital of implementing Covid 19 and SDGs. This research is a qualitative research, the type of research uses a comprehensive analytical study and analytical normative approach. Channels of mass communication in instilling the values of Javanese philosophy into the roots of society through a variety of channels, one of which is able to attract the masses through puppet performances. The meaning behind the puppet show is a spectacle that serves as entertainment as well as being a picture and guide of life. Other channels which are a process of mass communication are also found in both written and unwritten teachings. Javanese philosophical values embedded in the roots of the community are valuable capital used in the implementation of covid 19 management and implementation of SDGs because these values are very appropriate and have long rooted in the practice of people's daily lives. Only a policy is needed to revive the values of Javanese philosophy so that it can be implemented as a covid handler 19 policy and SDGs implementation.
Biodegradation of ultrathin fiber materials based on mixtures of polyhydroxybutyrate and polylactid
Authors:   Plekhanov Russian University of Economics, Olkhov A. A. ,   Emanuel Institute of Biochemical Physics of RAS,   N.N. Semenov Federal Research Center for Chemical Physics, RAS, Kosenko R. Yu. ,   N.N. Semenov Federal Research Center for Chemical Physics of RAS, Markin V. S. ,   N.N. Semenov Federal Research Center for Chemical Physics of RAS, Staroverova O. V. ,   N.N. Semenov Federal Research Center for Chemical Physics of RAS, Kucherenko E. L. ,   N.N. Semenov Federal Research Center for Chemical Physics of RAS, Kurnosov A. S. ,   Emanuel Institute of Biochemical Physics of RAS, Iordanskii A. L. ,   N.N. Semenov Federal Research Center for Chemical Physics of RAS
Published: March 2021

Comparative studies of ozone and oxygen effects, hydrolytic destruction, biodegradation of nonwoven fibrous and film materials based on mixtures of natural polymers - polyhydroxybutyrate and polylactide are carried out in this work. Fibers were obtained from a solution in chloroform via electrospinning method. The films were formed by pouring a solution onto a glass substrate. The structure of materials was investigated by methods of electron and optical microscopy, DSC, EPR spectroscopy. It has been shown that materials enriched with polylactide have greater resistance to oxidation, low resistance to hydrolysis and UV irradiation, in comparison with polyhydroxybutyrate.
Proton-conducting ceramics based on barium hafnate and cerate doped with zirconium, yttrium and ytterbium oxides for fuel cell electrolytes
Authors:   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Kalinina M. V. , Simonenko T. L. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences,   Kurnakov Institute of General and Inorganic Chemistry of RAS, Arsentiev M. Yu. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Fedorenko N. Yu. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Tikhonov P. A. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences, Shilova O. A. ,   Grebenschikov Institute of Silicate Chemistry of Russian Academy of Sciences
Published: March 2021

Nanopowders of the compositions BaHf1 – xYbxO3 – δ (x = 0.04; 0.08; 0.10) and BaCe0.9 – xZrxY0.1O3 – δ (x = 0; 0.5; 0.6; 0.7 and 0.8) were synthesized by the combined crystallization and nitric acid salts using the citrate-nitrate method. Those nanopowders were used to produce ceramic materials with a cubic crystal structure of the perovskite type, with a grain size of ~ 20 – 70 nm. The study of electrophysical properties revealed that they have a proton type of conductivity in the temperature range of 500 – 700 °C; σ = 10–2 – 10–5 Cm/cm. Type and mechanism of electrical conductivity of ceramics of the composition BaHf1 – xYbxO3 – δ (x = 0.04; 0.08; 0.10) have been studied both experimentally and using theoretical calculations-by computer modeling using the electron density functional method; the results are in good agreement. The research shows the prospects of using the obtained ceramic materials as proton-conducting electrolytes of solid-oxide fuel cells.
Creation of high-temperature heat-resistant alloys based on refractory matrices and natural composites
Authors:   All-Russian Institute of Aviation Materials, Bondarenko Yu. A. , Kolodyazhnyy M. Yu. ,   All-Russian Institute of Aviation Materials, V. A. V. A. ,   All-Russian Institute of Aviation Materials
Published: March 2021

The scientific, technical and technological aspects in the field of creating new high-temperature materials for the hot tract parts of gas turbine engines (GTE) with operating temperatures exceeding those existing in the GTE are considered. Investigated more refractory metal materials to create new high-temperature alloys used in the manufacture of working and nozzle blades and other parts of promising gas turbine engines based on Co – Cr, Pt – Al, Nb – Si, Mo – Si – B systems. In Co – Cr alloys, heat resistance is mainly ensured by hardening the Co matrix, including dispersed precipitates of the carbide phase (TaC) and the boride phase Cr2B. In alloys of the Pt – Al system, due to the doping of Cr, Al, Ti, Re ... and precipitates of the coherently embedded Pt3Al phase. In eutectic alloys of the Nb-Si system, this is due to complex hardening of the Nb solid solution and Nb5Si3 silicide, as well as the natural compositional structure. In Mo – Si – B alloys, high strength is achieved by doping a-Mo solid solution and the formation of intermetallic phases Mo3Si, Mo5SiB2, carbides Mo2C, TiC. Compositions were selected, analysis of their smelting methods was carried out, including directed crystallization, which provides a natural compositional structure, mechanical properties at room and high temperatures, oxidation resistance were evaluated, structural features were investigated, information was provided on technological equipment and the possibility of obtaining parts in various ways. It is shown that, depending on the composition of the selected matrix, the working temperature of heat-resistant alloys can increase to 1300 – 1500 °C, which significantly exceeds the existing nickel heat-resistant alloys. It is concluded that the materials under study are promising for use in aircraft engine building and the aerospace industry.
Electrical properties of aluminum oxide ceramics film on a metal
Authors:   Tomsk State University of Control Systems and Radioelectronics, Bakeev I. Yu. , Burachevsky Yu. A. ,   Tomsk State University of Control Systems and Radioelectronics, Dvilis E. S. ,   National Research Tomsk Polytechnic University, Zolotukhin D. B. ,   Tomsk State University of Control Systems and Radioelectronics, Yushkov Yu. G. ,   Tomsk State University of Control Systems and Radioelectronics
Published: March 2021

The work is devoted to the study of electrical properties (temperature dependences of conductivity, relative dielectric constant, dielectric loss tangent for various frequencies) of an aluminum oxide ceramic film deposited on a metal substrate. The film was created by the original method of electron beam evaporation of a non-conductive target, consisting of a compressed alumina powder, using a plasma electron source, which is able to reliably operate in the fore-vacuum pressure range (5 – 100 Pa). Such increased working gas pressures ensures the generation of a dense beam plasma near the target, which neutralizes the charging of a non-conducting target and thereby provides its effective melting and electron beam evaporation.
Synthesis and study of cathode materials based on carbon nanotubes for lithium-ion batteries
Authors:   Tambov State Technical University, Shchegolkov Alexander V. , Komarov F. F. ,   A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University, Lipkin M. S. ,   M.I. Platov South-Russian State Polytechnic University, Milchanin O. V. ,   A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University, Parfimovich I. D. ,   A.N. Sevchenko Institute of Applied Physical Problems of Belarussian State University, Shchegolkov Aleksei V. ,   Tambov State Technical University, Semenkova A. V. ,   M.I. Platov South-Russian State Polytechnic University, Velichko A. V. ,   M.I. Platov South-Russian State Polytechnic University, Chebotov K. D. ,   M.I. Platov South-Russian State Polytechnic University, Nokhaeva V. A. ,   M.I. Platov South-Russian State Polytechnic University
Published: March 2021

This work presents a study of the conditions and possibilities for the intercalation of hexafluorophosphate anions into CNT-based electrodes. For this, cathodes based on CNTs synthesized on various (Co – Mo)/(Al2O3 – MgO) and (Fe – Co)/2.1Al2O3 catalysts were production. As a result, electrode materials were obtained at various concentrations of CNT/graphite: CNT-4F, CNT-6 and CNT-6F. The resulting electrodes were studied by cyclic voltammetry (CVA) in an electrolyte of a dissolved LiPF6 salt based on EC:DEC solvents (in the ratio 1: 1: 1) with an admixture of 3 % VC at a sweep speed of 4 mV/s. Based on the obtained CVA dependences, the specific charge/discharge capacity of the electrodes CNT-4F, CNT-6 and CNT-6F was determined. The largest specific charge/discharge capacity calculated on the mass of CNTs had CNT-4F/graphite electrodes 292 and 164.22 mA·h·g–1, and the minimum specific CNT-4 electrodes without graphite, 41.67 and 1.5 mA·h·g–1, respectively. Also, the dependences of the average electrode utilization coefficient on the charge time at constant current on the cycle number at a charge of 300 s were obtained. For chronoamperograms of individual steps of the СNT-6F electrode, the values of lithium diffusion coefficients were calculated.
Conductive rubber with the effect of positive temperature resistance from the tire regenerate
Authors:   Institute of oil and gas problems SB RAS of FRC Yakut science center SB RAS, Shadrinov N. V. , Antoev K. P. ,   Institute of oil and gas problems SB RAS of FRC Yakut science center SB RAS
Published: March 2021

The possibility of developing conductive rubber based on tire regenerate and conductive carbon black OMCARB CH85 is shown. The vulcanizing characteristics of the regenerates obtained by thermomechanical devulcanization using a curing group and conductive carbon black were studied. It is shown that after thermomechanical devulcanization, preservation of sulfide bonds, re-vulcanization occurs only in the presence of sulfur and vulcanization accelerators. A flocculation effect was detected upon the introduction of OMCARB CH85 into the regenerate.It is shown that tensile strength and Shore A hardness are increase with an increase in the content of conductive carbon black in the regenerate. However, there is insufficient dispersion of carbon black, a decrease in elongation at break and resistance to abrasion is observed. The study of volume resistivity showed that the resulting rubbers belong to semiconductor materials. The dependence of resistivity on temperature in the range from 10 to 80 °C is constructed. It is shown that the effect of a positive thermal coefficient is observed in all samples. The values of the positive temperature coefficient of resistance in the temperature range of 10 – 80 °C are 0.054 – 0.285 deg–1.
Analysis of plasma effect on ultrahigh-molecular weight polyethylene fibers’ surface energy on strength of fibers and fiber reinforced composites
Authors:   Baikov Institute of Metallurgy and Materials Science, Mamonov V. I.
Published: March 2021

Completely saturated chemical bonds in ultrahigh-molecular-weight polyethylene (UHMWPE) fibers — are a reason for their low surface energy (FSE), i.e. inert properties. Elongated crystal structure of UHMWPE molecules ensures high anisotropic tensile strength of the fibers. An inertness is a problem for utilization these fibers in high-strength composites production. Surface energy (SE) difference of the fibers and a binder in fiber/matrix system hinders chemical interaction at interphase boundary and worsens fiber wettability. Increase in their FSE is a topical task for this problem decision. Necessary condition of FSE increase is the integrity of molecule structure, lying under modified surface. Low temperature, nonequilibrium plasma (LTP) treatment in a medium of argon and argon/propane mixture, used in this work for plasma activation of fibers’ surface, permits to abide by this condition. However, plasma ion bombardment during a process of activation can modify interior crystal structure and, as a result, decrease their strength. The rovings SK75 (Holland) and D800 (China) were used for study of the properties of UHMWPE fibers after plasma treatment. Activation effect on FSE, strength, and fibers’ wetting by water and epoxy binder before and after ageing was studied. Capillary wetting of the fibers by distilled water used for FSE evaluation. The data of filaments surface structure and their diameter change at maximal load, obtained by optical microscope study, were used for the analysis of FSE and epoxy matrix effect on the strength of fiber/matrix systems. Essential distinction of SK75 and D800 fibers properties is ascertained. Negative effect of fibers’ and matrix’s stiffness, as well as increased FSE of stiff fibers on the strength of fiber/matrix system is revealed.
Effect of precursor ultrasonic treatment on synthesis, texture characteristics and electrical conductivity of NiCo2O4
Authors:   Grebenshchikov Institute of Silicate Chemistry of RAS, Morozova L. V.
Published: March 2021

The high-dispersed powder−precursors of nickel−cobalt spinel (NiCo2O4) was synthesized by the method of coprecipitation of the nickel and cobalt hydroxides with followed by drying (150 °C) and ultrasonic (US) treatment of the precipitate. The influence of US−treatment on the texture characteristics of the precursors and NiCo2O4 powders was established. The possibility of obtaining nanodispersed (crystallite size < 20 nm), mesoporous powders (pore size 3 − 15 nm) of nickel−cobalt spinel at a temperature of 700 °C is shown. The change in the specific electrical conductivity of sintered NiCo2O4 samples in the temperature range of 100 – 800 °C was studied, the value of σ can vary from 0.1 to 7.0 Sm/cm.
Application of wideband laser-ultrasonic spectroscopy for non-destructive control of porosity in carbon plastics with various volume content of carbon fiber
Authors:   M.V. Lomonosov Moscow State University, Faculty of Physics, Sokolovskaya Yu. G. , Podymova N. B. ,   M.V. Lomonosov Moscow State University, Faculty of Physics, Karabutov A. A. ,   M.V. Lomonosov Moscow State University, International Laser Center
Published: March 2021

In this work, to obtain the frequency dependences of the phase velocity of longitudinal acoustic waves in composite materials, we use the method of broadband laser-ultrasonic spectroscopy, based on laser thermo-optical excitation of broadband acoustic pulses. Unidirectional carbon fiber reinforced plasticsampes with different volume contents of the matrix and fiber were taken as objects of study.For the studied samples, the frequency dependences of the phase velocity were obtained in the spectral range of 0.8 – 10 MHz, and the existence of the phase velocity dispersion in this range was shown. The phase velocity dispersion of longitudinal acoustic waves in the sample was calculated using the phase spectra of the probe ultrasonic pulse and the pulse transmitted through the sample under study. It is also shown that the relative dispersion of the phase velocity characterizes the porosity of the sample, and the higher the porosity, the greater the relative dispersion. Empirical relations obtained for the relationship between porosity and relative dispersion can be used for the operational non-destructive assessment of the porosity of composites. The results obtained can be useful both for quality control of the materials obtained with the aim of modernizing manufacturing technologies and for predicting the behavior of structures and parts of this material under external loads.
PENGARUH E-SERQUAL TERHADAP COMMITMENT DAN SATISFACTION SEBAGAI VARIABEL INTERVENING “KASUS PENGGUNA E-BANKING DI KOTA PADANG”
Authors: Yaniariza Wirda , Syafrizal Syafrizal
Published: March 2021

In this digital edge, Indonesian Financial Service Authority (OJK) has encouraged bank industry to develop internet banking services. This service has changed the way customer interact with the bank from face to face interaction to online interaction. The development of this internet banking services have triggered marketing researcher to investigate how this service can influence customer satisfaction and commitment.  This study aims to examine the effect of internet banking service quality on customer satisfaction and commitment. A questionnaire survey has conducted to 130 bank customer’s in Padang. Research instruments of this study have been adapted from many previous studies. Structural Equation Model analysis technique has been used to analyze the data of this research. The result of this study found that the dimension of internet banking service quality such as easy to use, website design, privacy, responsiveness, efficiency and reliability have significant effect on customer satisfaction. Furthermore, it was found that customer satisfaction has significant effect on customer commitment.Keywords: Commitment, Stisfaction, E-Banking
Impact of an integrative activity based on clinical practices on the teaching of basic and health care pharmacology curriculum to pharmacy students
Authors: FARIAS-FILHO Francisco A. , MADRUGA Lívia G. , ROCHA Riethe O. , CARVALHO Vinicius F.
Published: March 2021

Objective: The aim of this work was to evaluate the impact of an integrative activity based on clinical practices in disciplines of the basic and health care curriculum of an undergraduate pharmacy school. Methods: We developed an applied an interdisciplinary methodology in basic and health care disciplines focused on hospital pharmacy practice, including Pharmacokinetics and Pharmacodynamics; Hospital Pharmacy; Pharmacology I; Pharmacology II; Toxicology; Clinical Pharmacy. The methodology used was constructed on problem-based learning (PBL) focused on the health policies integrated into pharmaceutical clinical practices. Students were encouraged to formulate hypotheses, plan experiments and to discuss their outcomes. The evaluation of the effectiveness of the methodology was performed by analyzing the following parameters: escaping of discipline and measurement of students' performance improvement. Results: We noted that students were able to reformulate their original perceptions immediately after teaching. The students significantly reduced the avoidance of Pharmacology I; Pharmacology II; Toxicology. Furthermore, the students significantly improved their school performance in all disciplines with the exception of Pharmacology I; Pharmacokinetics and Pharmacodynamics. Conclusion: The use of the integrative methodology based on clinical practice resulted in lower dropout and better academic performance. In addition, the use of this methodology promoted greater integration of students in the health care problems and clinical practices.
SOCIAL-CULTURAL DETERMINANTS OF PERSONAL DIGNITY DEVELOPMENT THROUGH THE PRISM OF THE POST-COLONIAL AND POST-TOTALITARIAN UKRAINIAN NARRATIVE
Authors:   M. Dragomanov National Pedagogical University, Papitchenko Linda
Published: March 2021

The author focused her research on dignity determinants and their links with the social-cultural environment on the example of Ukrainian society. For this purpose, an analysis of the cultural and historical imperial and totalitarian background of the Ukrainian past has been conducted. The research used the following methods: theoretical-analytical, structural-systemic, historical-comparative. The author has specified and outlined that dignity is an integral formation, based on the intersection of three axiological spheres: personal, professional and social values. The article outlines the impact of artificially created cultural regimes on people’s dignity and the determinants of the higher and lower order of formed dignity in the context of Ukrainian realities. The former include external factors – postcolonial and post-totalitarian Ukrainian society – and internal factors – life-purpose orientation, values, and spirituality. Determinants of the lower order are represented by the behavioural, verbal and emotional spheres of a personality. A particular focus has been placed on the close connection between human freedom and the issue of human dignity. Emphasis has been given to one of the key values attacked by the empire or totalitarian regime, namely freedom in almost all its manifestations: an individual’s freedom of thought, freedom of action, freedom of creative development, free expression and development of the culture of the enslaved people. The current consequences for this phenomenon in the Ukrainian society are: lowered ability of many people to accept responsibility as a key concept of freedom and to avoid simple answers to complex and multidimensional challenges, that is, non-desire to consider complex phenomena from different points of view and to search for multilevel solutions. The author has examined the influence of the socio-cultural environment on an individual’s dignity development. The list of the following socio-cultural factors is presented: social factors, as politics in its various aspects, ideology, social environment, interpersonal interactions; cultural factors, a language, mentality, spiritual and emotional experiences, broadly defined: the culture of free thinking and creative realization, the culture of meaningful cooperation, civility, culture in its artistic aspect, and so on.