bluuebunny/crossref_metadata_2025 huggingface dataset:
“DISPUTAR A ‘NEGA’”: UMA ANÁLISE DA EXPRESSÃO POPULAR NA PERSPECTIVA DOS ESTUDOS DE GÊNERO, DISCURSO, RAÇA E CLASSE SOCIAL
Authors: Oliveira Maria Regina de Lima Gonçalves , Pereira Ariovaldo Lopes
Published: May 2021

RESUMO Este artigo objetiva discutir a expressão “disputar a ‘nega’” - que integra o universo cultural de muitas regiões do Brasil e constitui práticas sociais em contextos de competição em jogos diversos - na perspectiva dos estudos de gênero, discurso, raça e classe social. Para tanto, nos aportamos teoricamente em autoras e autores que problematizam as relações de gênero de forma interseccional, destacando outras dimensões que perpassam essa categoria, tais como raça, classe, sexualidade, etnia etc. São trazidos à cena teórica os estudos de Angela Davis (2016) e Heleieth Saffioti (2013) sobre gênero, raça e classe e os apontamentos de Norman Fairclough (1998; 2001; 2003) sobre discurso, dentre outros. Intentamos, com isso, usando como ferramenta de análise os princípios da Análise de Discurso Crítica - ADC (FAIRCLOUGH, 2001, 2003; VIEIRA; RESENDE, 2016; MAGALHÃES, 2000), descortinar os discursos ideológicos que subjazem à expressão “disputar a ‘nega’”, bem como compreender sua raiz cultural e histórica, haja vista que a pessoa que é objeto da disputa é uma mulher negra cujo corpo é oferecido como prêmio ao vencedor, sendo, assim, objetificado, subalternizado e instrumentalizado, seguindo a lógica de uma sociedade patriarcal em que o corpo da mulher, e da mulher negra em especial, é usado primordial e essencialmente para servir ao homem em suas necessidades físicas e emocionais. Neste estudo, nos pautamos na concepção butleriana de gênero, por concordarmos que a constituição dessa categoria se dá mediante os confrontos culturais e sociais reiterados cotidianamente pelas práticas discursivas. Em outras palavras, trata-se da preponderância do discurso na constituição dos sujeitos, dado que nos constituímos a partir da outra, do outro. Ao propormos o estudo da expressão em ênfase, na perspectiva da análise interseccional (SCOTT, 1994; BUTLER, 2016; DAVIS, 2016), percebemos que a interseccionalidade de gênero, permeada por outros marcadores sociais, evidencia a subalternização feminina, visto que a categoria mulher, sobretudo a negra e pobre, permanece, ainda nos dias atuais, em condição de objetificação, marginalização e subalternização na sociedade.
PERFORMATIVITY OF RACE INTERSECTED BY GENDER AND SEXUALITY IN A CONVERSATION CIRCLE AMONG BLACK WOMEN
Authors: Melo Glenda Cristina Valim de
Published: May 2021

ABSTRACT In this article, I intend to mobilize the concept of race performativity intersected by gender and sexuality and to analyze this in the interaction of black women in an online conversation circle. To reach this goal, I analyze an online conversation circle with me and six other black women through Messenger and I base my analysis on the concept of performativity from Austinian and Butlerian studies, and on the concepts of race articulated with other discursive-bodily markers indicated by hooks (1995), Bento (2002), Mbembe (2014, 2018), Pacheco (2013), among others. In the analysis of the conversation circle, I used the linguistic indexes suggested by Silverstein (2003). The analysis shows the participants intersecting racial performativity with gender and sexuality in the process of understanding the peculiarities of their own existences in different contexts and moments of their lives.
A LITERATURA DE MULHERES NEGRAS COMO DIREITO HUMANO: REFLEXÕES SOBRE O DESENVOLVIMENTO DA CONSCIÊNCIA CRÍTICA NO CONTEXTO DE UM PROJETO DE EXTENSÃO PARA MULHERES EM PRIVAÇÃO DE LIBERDADE
Authors: Silva Leonardo da , Farias Priscila Fabiane
Published: May 2021

RESUMO Este artigo objetiva investigar os possíveis efeitos das ações de um projeto de extensão no desenvolvimento da consciência crítica (FREIRE, 2005), em especial no que diz respeito a questões de gênero e raça. Mais especificamente, o estudo tem como foco principal as atividades de leitura realizadas por uma equipe multidisciplinar com mulheres em privação de liberdade, que incluíram a apresentação e discussão de três obras de escritoras negras: Olhos D’Água (Conceição Evaristo), Quarto de Despejo (Carolina Maria de Jesus), e Heroínas Negras Brasileiras em 15 cordéis (Jarid Arraes). Neste estudo, investigamos o diário reflexivo de uma das discentes extensionistas da equipe executora bem como os questionários com as percepções das mediadoras do projeto - professoras, técnicas administrativas e discentes - acerca das obras de autoras mulheres negras selecionadas e das atividades propostas a partir delas. A partir da visão das mediadoras do projeto, destaca-se não apenas o papel da literatura na reflexão acerca de questões de gênero, classe e raça, mas também a importância de que as atividades considerem as subjetividades de todos os sujeitos deste processo para que o diálogo crítico ocorra em uma atmosfera segura e acolhedora. Por fim, as percepções apontam a relevância de atividades culturais e literárias no processo de humanização - tanto da equipe proponente quanto das mulheres em privação de liberdade -, evidenciando a importância de políticas públicas que compreendam a arte e a cultura enquanto direito humano no contexto de privação de liberdade.
ENTRE O LÓCUS DE ENUNCIAÇÃO E O LUGAR DE FALA: MARCAR O NÃO-MARCADO E TRAZER O CORPO DE VOLTA NA LINGUAGEM
Authors: Nascimento Gabriel
Published: May 2021

RESUMO Lócus de enunciação e lugar de fala parecem conceitos primos, mas são produtos de tendências de pensamento distintas, como é o caso dos estudos subalternos (SPIVAK, 1987), a Teoria Racial Crítica (LADSON-BILLINGS e TATE, 1995), os estudos de feministas negras norte-americanas (DAVIS, 1983; CRENSHAW, 1989; HILL COLLINS, 1990), os estudos chicanos (ANZALDUA, 1987), decoloniais (MIGNOLO, 2000), entre outros. Neste trabalho vamos navegar entre os sentidos de lócus de enunciação (MIGNOLO, 2000) e lugar de fala (RIBEIRO, 2017) para compreender como a linguagem constrói a racialização e naturaliza marcado e não-marcado por meio dela. Para isso, vou examinar ambos os conceitos, lugar de fala e lócus de enunciação, a partir de suas delimitações históricas, as similaridades e diferenças entre si, bem como pontos de encontro teórico. Para finalizar, vou propor dispositivos como trazer o corpo de volta, roubado pela colonialidade, e marcar o não-marcado, como forma de ligar o lugar de fala ao lócus de enunciação.
O PORTUGUÊS COMO CURSO UNIVERSITÁRIO NUM PAÍS DO NORTE: O CASO DA NORUEGA
Authors: Engh Jan
Published: May 2021

RESUMO O português surgiu há 50 anos como curso na Universidade de Oslo (Noruega), por ser um canal importante de cultura, a fim de completar o ensino e a pesquisa romanísticos, e por razões práticas na esfera da indústria e dos negócios. De facto, a iniciativa partiu do último setor, embora preparada por um romanista. Com o tempo, o português tornou-se um curso como os outros. Contudo, com a mudança da ideologia da universidade e uma reorganização administrativa, os ideais académicos foram relegados a segundo plano. Também as considerações sociais e políticas foram negligenciadas. Cada vez menos recursos foram sendo atribuídos ao português, e a consequente baixa inevitável da procura por parte dos estudantes legitimou uma redução drástica do curso, testemunhando o desaparecimento do verdadeiro interesse pelos países e culturas lusófonos, não só da parte dos gestores académicos e da indústria, mas também do atual governo norueguês.
QUESTÕES ÉTNICO-RACIAIS EM DISCURSOS EM TORNO DA VIRILIDADE MASCULINA NEGRA EM CONTOS HOMOERÓTICOS
Authors: Jesus Dánie Marcelo de , Oliveira Gabriel
Published: May 2021

RESUMO Este trabalho tem como objetivo analisar a naturalização de um determinado discurso de virilidade masculina negra em contos homoeróticos publicados na Internet. O referencial teórico abarca a problematização da questão racial (BELL HOOKS, 1995; FREITAS, 2011; FANON, 2008 MBEMBE 2018; WIEVIORKA, 2018), da perspectiva da noção de discurso (FOUCAULT, 2012; MAINGUENEAU, 2010) e de construções de sentido de virilidade e seus efeitos ao longo da História (TAMAGNE, 2012; THUILLIER, 2012). Metodologicamente, este estudo se enquadra em um paradigma de pesquisa qualitativo-interpretativista. Para geração dos dados, o trabalho registra a análise dos 10 contos gays mais votados pelos leitores do portal “Conto Erótico”, em cujos títulos há a menção do termo “negão”, a fim de identificar como são apresentados caracteres físicos e performances sexuais de homens negros descritos como bons amantes. Os resultados sugerem que essa fixação identitária sofrida por esses homens acaba reforçando o racismo estrutural, que, no Brasil, vem sendo enfatizado desde o estabelecimento das relações hierárquicas entre colonizadores europeus brancos e escravos africanos negros no decurso de séculos de escravidão oficial. Isso ainda hoje constrói um efeito de sentido objetal sobre o negro, posicionando-o como objeto de desejo na teia imaginária.
ASPECTOS DA BRANQUIDADE E OS ATRAVESSAMENTOS DA AMABILIDADE ARTIFICIOSA NA MÍDIA TELEVISIVA: O CASO DO RJ-MÓVEL
Authors: Rosa Priscilla Teodósio , Oliveira Talita de
Published: May 2021

RESUMO O presente trabalho problematiza a hipervalorização da branquidade e suas implicações na vida em sociedade, principalmente no que toca à condição de subalternização do povo negro. O corpus de discussão será um veículo da mídia televisiva, o quadro RJ-Móvel, transmitido pelo diário telejornalístico local RJTV, da Rede Globo de Televisão. O quadro aborda situações em que uma jornalista, juntamente com sua equipe, tenta mediar e solucionar problemas relativos à falta de infraestrutura em bairros periféricos da cidade do Rio de Janeiro, bem como na região do chamado Leste Metropolitano e na Baixada Fluminense. Analisaremos a construção do roteiro do quadro e sua inserção em meio à população negra e pobre, maioria das(os) residentes nestes locais e sobre as(os) quais o programa se debruça, destinando suas investidas de caráter assistencialista. Como complemento de análise deste objeto, onde se observam outros modos de operar práticas de racismo e estabelecer lógicas de condutas civilizatórias, faremos uma leitura crítica também a respeito da postura da apresentadora, seus movimentos e dinâmicas de interação com a população local. Para tanto, traçaremos um diálogo com a noção de amabilidade artificiosa, mobilizada por Fanon (2008) em Pele Negra, Máscaras Brancas, em aproximação com duas outras categorias: a primitivização da pessoa negra e a caricata espetacularização da negritude e da pobreza. Assim nos interessa refletir estratégias que repensem o enaltecimento da branquidade, rompendo com o discurso midiático hegemônico que performa assistencialismo, produz e reproduz - entre outros modos de estereotipação - práticas racistas.
CURADORIA DE SENTIDOS EM MULTILETRAMENTOS DIGITAIS NO CURSO DE LETRAS INGLÊS DA UNIVERSIDADE FEDERAL DO ACRE
Authors: Kieling Aline , Silva-Antunes Paula Tatiana , Oliveira-Codinhoto Gabriela
Published: May 2021

RESUMO As práticas discursivas na contemporaneidade constituem-se de relações dialógicas cada vez mais inter/multi/transculturais e multissemióticas devido aos processos de globalização e, sobretudo, pelos avanços das Tecnologias Digitais da Informação e Comunicação (TDIC). Desse modo, emergem outros (multi)letramentos. No entanto, há ainda diversas lacunas que inviabilizam espaços de (multi)letramentos na educação formal do Brasil, entre elas a formação de professores. Nesse sentido, o objetivo desta pesquisa é avaliar em que medida o Projeto Político Curricular (PPC) do curso de Letras Inglês da Universidade Federal do Acre (UFAC), campus Floresta, possibilita (ou não) aos discentes o desenvolvimento da curadoria de sentidos em (multi)letramentos digitais, de maneira crítica, ética e estética para a prática docente. Para isso, sob a ótica da Linguística Aplicada in/transdisciplinar (MOITA LOPES, 2006; ROJO, 2006), avaliamos sete excertos do PPC em foco, relacionados às TDIC. Por meio das análises, de cunho qualitativo, constatamos que a curadoria de sentidos em (multi)letramentos digitais está presente na política de formação de professores do referido curso de Letras, entretanto; as ementas das disciplinas relacionadas aos gêneros discursivos do campo acadêmico e do campo artístico-literário são incipientes às demandas das práticas discursivas emergentes.
Impact of COVID-19 pandemic on brazilian dentists in 2020: an epidemiologic study
Authors: SOUZA Alessandra Areas e , SILVA Juliana Casemiro Ferreira , LOUREIRO Bruno Boabaid , ZUZA Elizangela Cruvinel
Published: May 2021

Abstract Introduction The COVID-19 pandemic has led to an interruption in work activities in various sectors, generating an economic crisis and a high rate of unemployment worldwide. Objective To assess the behavior and perceptions of Brazilian dentists about the COVID-19 pandemic and to verify its impact on the routine of dental care. Material and method The electronic questionnaire was disseminated through social networks from July to November/2020. The representativeness for the study sample was calculated, generating a sample calculation of 385 dentists. Result In total, 318 dentists (82.6%) from all regions of Brazil answered the questionnaire, being 112 men (35.2%) and 206 women (64.8%). Most of the interviewees, that is, 249 dentists (78.3%) reported working in private offices or clinics. Of the interviewees, 26 (8.8%) tested positive for COVID-19 and another 10 (3.1%) had symptoms of the disease, but did not take the test. No interviewees reported having been hospitalized due to the disease. During the period of application of the questionnaire, 235 respondents were attending routine and emergency patients (73.9%). Only 174 (54.7%) reported feeling safe with the use of personal protective equipment. Most interviewees declared that they did not have a financial reserve for the interruption of work activities (54.7%). Conclusion The COVID-19 pandemic has had a major impact on dentistry, and better financial planning, in addition to constant reinforcement of biosafety care, which is essential for professionals in the healthcare area, can help to protect them and maintain their professional practice in times of pandemic and uncertainty.
Aestheticization of Scientific Texts
Authors: Dolzhich Elena , Dmitrichenkova Svetlana
Published: May 2021

ABSTRACT Currently, there is no doubt about the availability of expressive means in the texts of scientific content. The aim of the paper is to analyze aesthetics means in scientific texts due to the author’s individuality and dialogical nature of scientific communication. The research materials are Spanish scientific articles and theses. The findings are discussed regarding the idea that there is a common intertextual space between the text created by the author and other texts that made up the author’s cultural and scientific experience. The conclusion is made that besides the traditional functions of intertextuality in the scientific text there is an aesthetic function.
“Outros pesqueiros”: apontamentos sobre a pesca, os pescadores e os ambientes do Sul do Brasil
Authors: Wagner Gustavo Peretti , Silva Lucas Antonio da
Published: May 2021

Resumo A presente proposta tem por objetivo refletir sobre o modo de vida pescador no extremo sul do Brasil. Durante décadas, a socioantropologia da pesca cimentou o caiçara do litoral sudeste e o ribeirinho amazônico como as identidades do pescador brasileiro. Os diferentes ambientes, territórios e materialidades apontam para um modo de vida pescador distinto para a costa sul-brasileira – entre o Cabo de Santa Marta, Santa Catarina, e o Chuí, Rio Grande do Sul. Para tanto, será apresentada uma caracterização ambiental acompanhada de uma revisão da produção da socioantropologia pesqueira e, por fim, os trabalhos etnográficos fornecerão os dados para a interpretação do modo de vida pescador no extremo sul do Brasil.
A pandemia da Covid-19 e os pequenos produtores rurais: superar ou sucumbir?
Authors: Futemma Celia , Tourne Daiana Carolina Monteiro , Andrade Francisco Alcicley Vasconcelos , Santos Nathália Moreira dos , Macedo Gabriela Silva Santa Rosa , Pereira Marina Eduarte
Published: May 2021

Resumo Diante da pandemia do coronavírus Sars-CoV-2, causador da Covid-19 e do número elevado de pessoas infectadas e mortes no Brasil, esta pesquisa tem como objetivo identificar e entender o impacto desta crise sanitária sobre os pequenos produtores rurais, que compõem um dos grupos vulneráveis da sociedade brasileira. Por meio de questionários e depoimentos de participantes de diferentes regiões, os resultados indicam que os produtores sofreram impactos da pandemia de forma multidimensional sobre a produção, a comercialização, a renda, a saúde humana e as formas de comunicação. Entretanto, conseguiram superar alguns dos desafios impostos pela pandemia a partir de um conjunto de fatores, principalmente de ações solidárias e coletivas, de soluções criativas individuais e do suporte de políticas públicas.
Antioxidant and antimicrobial activity of cathode and anode water in Coffea arabica L. seeds
Authors: Vilela Ana Luiza Oliveira , Rosa Sttela Dellyzete Veiga Franco da , Coelho Stefânia Vilas Boas , Fávaris Nathália Aparecida Bragança , Fantazzini Tatiana Botelho , Baute Júlia Lima
Published: May 2021

Abstract: Seed deterioration induces the formation of free radicals and proliferation of microorganisms, but the application of external antioxidants may lessen these effects. The aim of this study was to investigate the antioxidant and antimicrobial activity of cathode and anode water on the physiological quality and health of Coffea arabica L. seeds. Part of the seeds were soaked in cathode water and the other part in anode water for periods of 1, 6, 12, 24, and 36 hours. The physiological quality of the seeds was evaluated by the germination test and tetrazolium test, and seed health by the Blotter test. Analysis of variance and Pearson correlation analysis were performed on the data for all the response variables. Soaking in cathode water or anode water up to 24 hours improves the physiological quality of coffee seeds. Anode water has a beneficial effect on the health of coffee seeds, reducing the incidence of Fusarium spp., Penicillium spp., Cladosporium spp., and Alternaria spp. after one hour of soaking and of Aspergillus spp. after six hours. Soaking in cathode water for a period of one hour leads to a reduction in the fungi Aspergillus spp., Fusarium spp., Cladosporium spp., and Alternaria spp., and reduction in Penicillium spp. after six hours.
Protocolo de Avaliação Miofuncional Orofacial com Escores Expandido: AMIOFE-E LACTENTES (6-24 MESES)
Authors: Medeiros Andréa Monteiro Correia , Nobre Gabriela Rodrigues Dourado , Barreto Íkaro Daniel de Carvalho , Jesus Elisdete Maria Santos de , Folha Gislaine Aparecida , Matos Anna Luiza dos Santos , Nascimento Sarah Catarina Santos do , Felício Cláudia Maria de
Published: May 2021

RESUMO Objetivo Adaptar e validar conteúdo e aparência do Protocolo de Avaliação Miofuncional Orofacial com Escores Expandido (AMIOFE-E) para lactentes de 6 a 24 meses de idade. Método Estudo de validação. Os parâmetros foram baseados em literatura sobre desenvolvimento motor orofacial, experiência dos autores e painel de 10 especialistas. Os dados foram analisados por estatística descritiva, Índice de Validade de Conteúdo e concordância entre especialistas. Resultados O protocolo foi organizado em blocos funcionais após manutenção, exclusão, modificação e acréscimo de itens, adaptando-se à faixa etária. Obteve-se alto nível de concordância em 90% dos itens. Na versão final foram acrescidos: histórico de alimentação e hábitos parafuncionais orofaciais, mobilidade facial, dentição, modo oral de respiração, deglutição de pastoso e detalhamentos específicos para a faixa etária. Acrescentou-se um manual operacional e uma tabela para registro de escores. Conclusão O Protocolo AMIOFE-E Lactentes e respectivo manual operacional foram validados quanto ao conteúdo e aparência, e poderá contribuir no diagnóstico miofuncional orofacial na faixa etária de 6 a 24 meses de idade.
DNA Cleanup and Concentration Using the Monarch® PCR & DNA Cleanup Kit (5 μg) (NEB #T1030) v3
Authors: England Biolabs New
Published: May 2021

Protocol for DNA Cleanup and Concentration Using the Monarch® PCR & DNA Cleanup Kit (5 μg) (NEB #T1030). You can also download the Quick Protocol Card here.
Oligonucleotide Cleanup Using Monarch® PCR & DNA Cleanup Kit (5 μg) Protocol (NEB #T1030) v5
Authors: England Biolabs New
Published: May 2021

The Monarch PCR & DNA Cleanup Kit protocolcan be modified to enable the purification of ssDNA, oligonucleotides, and other small DNA fragments. The following modified protocol utilizes the same columns and bind/wash/elute workflow of the Monarch PCR & DNA Cleanup Kit with > 70% recovery and cleanup of oligonucleotides ≥ 15 bp (dsDNA) or ≥18 nt (ssDNA). The Oligonucleotide Cleanup protocol efficiently removes unincorporated nucleotides, short oligos, dyes, enzymes, and salts from labeling and other enzymatic reactions. You can also download the Quick Protocol Card here.
Pharmacological management and potentially inappropriate prescriptions for patients with acne v1
Authors: Machado Alba Jorge
Published: May 2021

Introduction. Acne is a chronic inflammatory disease that involves the pilosebaceous follicle and mainly affects adolescents and young adults. Its pharmacological treatment involves topical and systemic medications, but a heterogeneous group of drugs may exacerbate or induce skin lesions. The aim was to identify the pharmacological management and medications related to the exacerbation of skin lesions in patients diagnosed with acne. Methods. This was a cross-sectional study that identified the outpatient medication prescription patterns of patients with acne from a dispensing database of 8.5 million members of the Colombian Health System. Sociodemographic and pharmacological variables and the identification of prescriptions that were potentially inappropriate due to the risk of worsening acne were considered. Results. A total of 21,604 patients with acne were identified. Their median age was 20.8 years [interquartile range: 17.3-27.3 years], and 60.7% were women. Treatment mainly involved antibiotics (79.9% of patients), especially doxycycline (66.0%) and retinoids (55.7%). A total of 17.2% of the patients had potentially inappropriate prescriptions, predominantly the use of progestogens with androgenic properties (8.9%). Women (OR:3.55; 95%CI:3.24-3.90) and patients with pathologies such as systemic lupus erythematosus (OR:18.61; 95%CI:7.23-47.93) and rheumatoid arthritis (OR:10.80; 95%CI:5.02-23.23) were more likely to receive inappropriate prescriptions, and the risk increased with each year of life gained (OR:1.02; 95%CI:1.02-1.03). Conclusion. Patients with acne are excessively treated with systemic antibiotics, counter to clinical practice guidelines. Approximately one-fifth of these patients received some potentially inappropriate medication that could exacerbate their skin lesions.
Genetic diversity of the endangered endemic species Hedysarum sangilense Krasnoborov et Timokhina (Fabaceae)
Authors:   Central Siberian Botanical Garden SB RAS, Selyutina Inessa Y. , Konichenko Elena S. ,   Central Siberian Botanical Garden SB RAS, Zibzeev Evgeniy G. ,   Central Siberian Botanical Garden SB RAS, Kuban Irina N. ,   Central Siberian Botanical Garden SB RAS
Published: May 2021

Hedysarum sangilense Krasnoborov et Timokhina (Fabaceae) is а rare subendemic species of the Fabaceae family. It has been found in a restricted area, only in isolated habitats in Tyva Republic and Northern Mongolia. Two PCR techniques, using RAPD and inter-simple sequence repeat (ISSR) markers, were used to perform a comparative analysis of genetic diversity in this species. When amplifying DNA with three RAPD primers, we produced 51 bands, of which 21 (40.6 %) were polymorphic. Amplification of genomic DNA using ISSR analysis yielded 96 fragments, of which 35 (36.6 %) were polymorphic. Nei,s gene diversity (H) was estimated to be 0.105 within populations (range 0.086–0.150) and 0.191 at the species level. Genetic differentiation among populations (GST) was 0.383. The results indicate that both of the marker systems RAPD and ISSR, individually or in combination, can be effectively used in the determination of the genetic relationship among and within populations of H. sangilense.
Anisotropy of Surface Energy and Thickness of the Surface Layer of Magnetic Nanostructures
Authors:   Karaganda University named after E. A. Buketova, Karaganda, Kazakhstan, V.M. Yurov , V.I. Goncharenko ,   Military Institute of the Moscow Aviation Institute  (National Research University), Moscow, Russian Federarion, V.S. Oleshko ,   Moscow Aviation Institute (National Research University), Moscow, Russian Federarion
Published: May 2021

In this work, we show how to calculate the surface energy anisotropy and the thickness of the surface layer of some magnetic nanostructures. As an example, the minerals of magnetite, ulvespineli, ilmenite andpseudobrukite, which have different crystal structures, are considered.
Synthesis of Low-Voltage Logic Gates on Surrounding Gate SOI CMOS Nanotransistors
Authors:   Federal State institution Federal Scientific Center Research Institute of System Researches of the Russian Academy of Sciences, N.V. Masalsky
Published: May 2021

We discuss the issues of synthesis of low-voltage logic gates on cylindrical surrounding gate SOI CMOS nanotransistors in the supply voltage range up to 0.8 V. In this transistor architecture, it becomes possible to more effectively control the charge in its working area, primarily due to its design parameters. It is also characterized by effective suppression of short-channel effects and a low capacitance value. This leads to a decrease in the level of power dissipation in combination with a reduction in the occupied area. TCAD models of n- and p-types nanotransistors have been developed. The anomalous behavior of the dependence of the threshold voltage on the diameter of the working area is revealed, which is associated with the peculiarities of the manifestation of short-channel effects due to the capacitive interaction of the gate-channel regions and drain-source transitions at small gate lengths. They were used to select prototypes of transistors with optimal parameters for the synthesis of complex logic gates with low supply voltage. Using the mathematical core of the HSPICE program, the dynamic characteristics of the developed physical models of the inverter, the inverter chain, and the XOR2 are numerically investigated. At control voltages of 0.8 V and a frequency of 50 GHz, the inverter model predicts a maximum switching delay of 3.3 ps, a limit level of active power of 1.1 mkW, static 0.3 pW, the XOR2 predicts a maximum switching delay of 8.6 ps, a limit level of active power of 4.9 mkW, static 1.5 pW. The minimum of the product "delay * power" of the adder is at a supply voltage of 0.72 V. Its position does not depend on the set of input signals. At the same time, the maximum switching delay is 10.8 ps, the maximum active power level is 3.9 mkW. The totality of the obtained characteristics allows us to consider the analyzed transistor architecture for creating low-power electronic devices.
Photoconductive Semiconductor-Based Optoelectronic Devices for Generation of Terahertz Radiation
Authors:   Institute of Ultra-High-Frequency Semiconductor Electronics of the Russian Academy of Sciences (IUHFSE RAS), Moscow, 117105, Russian Federation, D.S. Ponomarev
Published: May 2021

We report on the development and fabrication of a superlattice-based InAlAs/InGaAs heterostructure featuring an ultrashort photocarrier lifetime which has been used as a material base for a photoconductive antenna (PCA)-emitter with a frequency bandwidth of 10 GHz — 3.0 THz and dynamic range above 60 dB. We show an efficiency of plasmonic electrodes embedded into the 10 μm PCA’s gap demonstrating the enhancement of the emitted THz power up to 10 μW (at bias voltage 20—30 V and average pump power 10 mW). The results could open a pathway towards the development of the Russian THz spectroscopic and imaging systems.
Trends in the Development of Planar Radiating Systems in the Millimeter Wavelength Range. Monopoles and Dipoles. Review
Authors:   V. G. Mokerov Institute of ultra high frequency semiconductor of Russian academy of sciences, Moscow, 1174105, Russian Federation, A.P. Lisitsky , P.P. Maltsev ,   V. G. Mokerov Institute of ultra high frequency semiconductor of Russian academy of sciences, Moscow, 1174105, Russian Federation,   Federal state budgetary educational institution of higher education MIREA,  Russian technological University, Moscow, 119454, Russian Federation, O.S. Matveenko ,   Federal state budgetary educational institution of higher education MIREA, Russian technological University, Moscow, 119454, Russian Federation,, A.O. Mikhalev ,   Federal state budgetary educational institution of higher education MIREA, Russian technological University, Moscow, 119454, Russian Federation,,   V. G. Mokerov Institute of ultra high frequency semiconductor of Russian academy of sciences, Moscow, 1174105, Russian Federation, A.A. Trofimov ,   V. G. Mokerov Institute of ultra high frequency semiconductor of Russian academy of sciences, Moscow, 1174105, Russian Federation, V.R. Skrinsky ,   Federal state budgetary educational institution of higher education MIREA, Russian technological University, Moscow, 119454, Russian Federation,
Published: May 2021

The classification of antennas of the millimeter wavelength range is carried out. Various design and technological bases for the implementation of antennas and their parameters are given.
Analysis and optimization of retrial systems and queue with variable rate of input flow
Authors: Usar I. Ya. , Makushenko I. A.
Published: May 2021

The paper is focused on in-depth study of the promising area of the stochastic systems theory related with scrutiny of queuing systems with repeated calls. We research Markov`s models of retrial systems with queue and variable rate of input flow controlled by threshold strategy with no restriction on the capacity of the orbit. We defined stationary regime existence conditions and investigated probability characteristics of process for two-dimension Markov process with continuous time which we took as a main model of the specified system. In stationary regime for probability characteristics of the service process were found explicit formulas. Research methods which we used are based on the initial process approximation by the process with bounded state space. Results of the research allow us to evaluate convergence rates of stationary distribution of finite systems with repeated calls to stationary distribution of infinite systems. Method of probability flow equating is used for obtain explicit expressions for stationary system probabilities through the closed path which are defined in a special way. For threshold control strategies the optimization problem of the total income of the system was stated and solved.
Influence Of The Size Of Colloid Nanorized Systems On The Luminescence Intensity Of Eu(III) And Tb(III) Complexes
Authors: Doga P.G. , Marynin A.I. , Yegorova A.V. , Skripinets Yu.V. , Antonovich V.P.
Published: May 2021

Optimal conditions for complexation of Tb(III) ions with norfloxacin, keterolac, 2-oxo-4-hydroxyquinoline-3-carboxylic acid amide derivative and Eu(III) with oxytetracycline were established. The dependence of the luminescence intensity (Ilum) of complexes on the acidity of the medium, the type of solvent, the luminescent characteristics of complex compounds were determined, the average lifetime of the excited state of europium and terbium ions in complex compounds in the presence and absence of cationic, anionic and nonionic substances, and the size of colloidal nanoscale systems based on these complexes is established. Analysis of the influence of the type of surfactants on the processes of excitation energy transformation in the complexes of Eu(III), Tb(III) with some drugs was studied by the method of dynamic light scattering. It was found that the luminescence intensity of colloidal nanoscale systems based on Tb(III) and Eu(III) complexes increases in the presence of cationic surfactants(СPC) and nonionic surfactant (Triton X-100), which is associated with a decrease in their size, although other factors may be involved: synergetic effects, displacement of water molecules from the internal coordination sphere of the complex and increasing the rigidity of the complex during coordination with surfactants. Exceptions are Eu – OxTc, Tb-R2, Tb-Nor complexes in the presence of anionic surfactants (SDS), the size of which increases, which can be explained by the formation of triple complexes. The intensity of their luminescence increases, because in these cases there is a displacement of water molecules from the internal coordination sphere of the complex in coordination with SDS.
Anodic Stripping Voltammetric Determination Of Copper In Multivitamin-Mineral Formulations Using Iodine-Coated Platinum Electrode
Authors: Amayreh Mohammad , Hourani Wafa , Hourani Mohammed Khair
Published: May 2021

In this work, the utilization of the modified iodine-coated polycrystalline platinum electrode as a voltammetric sensor for copper determination in pharmaceutical formulations was reported. The optimized experimental parameters for the determination of copper were using 0.1M KCl as a supporting electrolyte with a scan rate of 50 mV/s, deposition potential of - 0.2 V, and a deposition time of 2 minutes. The anodic peak related to Copper oxidation is centered at about + 0.05 V. The extended detected linear range for the developed method was between 1 ppm and 100 ppm. The anodic current showed excellent linearity with R2 = 0.9986. The limit of detection (LOD) and limit of quantitation (LOQ) were 0.115 ppm and 0.346 ppm, respectively, which attests to the sensitivity of the method. The investigation for the effect of potential interferences from multivitamins tablet ingredients indicated a specific selectivity toward copper and the absence of any electrochemical response toward these components. The developed method was successfully applied to analyze copper and the obtained results were in good agreement with the labeled values, besides that, the statistical tests indicated no significant difference at p = 0.05 with 95 % confidence level.
Transformation and Participation – A Reply to Niebert and van Dijk
Authors: Töpfer Daniela
Published: May 2021

In order to achieve more sustainability, more political education in the sense of Niebert (2019) and the inclusion of indigenous knowledge, as postulated by van Dijk (2019), are certainly important milestones. In addition, behaviorally effective teaching needs more application-oriented approaches. This requires a change in existing didactic formats, including more participation. Innovative, transformative learning environments naturally enable more participation by putting us in touch with ourselves, nature and the environment. Peer education also develops naturally in such contexts. This should be considered especially important because peers serve as multipliers. With a willingness to take the risk of changing existing educational curricula, there is an opportunity to transform the Anthropocene into an age of sustainability.
Drawing Distinctions: What is Post-Critical Pedagogy?
Authors: Wortmann Kai
Published: May 2021

Post-critical pedagogy is an attempt to step outside the endless repetition of critical research in education. ‘Posting’ critique and thereby posing the question of alternatives works against a stagnating tendency for current educational debates to appear unsatisfactory, paralysing, and tedious. This essay describes the limits of critical pedagogy and possibilities of a ‘post-critical pedagogy’. It is structured according to the term’s three elements of ‘critique’, ‘post’, and ‘pedagogy’. For each of these elements, the essay describes two ways of understanding; not to play them off against each other, but to show how manifold post-critical pedagogy can and should be. The essay concludes with a proposal of three analytical dimensions for further work on a post-critical pedagogy.
Notes on Post-Critique
Authors: Koh Aaron
Published: May 2021

This essay argues that a useful grammar for doing post-critique has emerged from a trans-, inter- disciplinary dialogue on post-critique. I further make three propositions in the essay. First, I suggest that postcritique is an additive critical practice where resources for cultivating thinking, reasoning and evaluating draws on a constellation of approaches that combines this and that and reinvigorates critique in new directions. Second, postcritique repairs a ‘negative’ enterprise of critique that has become a culture of teaching in academia and schools. Third, more affirmative pedagogies of postcritique could be more welcoming and considered to be more constructive in authoritarian context.
Resonance and Education
Authors: Felski Rita
Published: May 2021

This essay addresses the relations between recent reassessments of critique in literary studies and current debates in the field of education. Drawing on the work of Hartmut Rosa, it argues for the relevance of “resonance” as an educational concept. Resonance is not an emotion but a relation: not a positive feeling but an often ambivalent experience of aliveness, excitement, and connectivity. As a sociological as well as phenomenological concept, it encourages us to acknowledge the institutional factors that shape the treatment of education as either resonance or resource. A brief comparison of John Williams’s Stoner and Dionne Brand’s Theory is used to question dichotomies between “love of literature” and “critical detachment”; both literature and critical theory can serve as powerful sources of resonance.
Earth-Bound Study as a Post-Critical Response to the Corona-Crisis
Authors: Joris Joris , Zamojski Piotr
Published: May 2021

In this paper, we want to flesh out what a post-critical way of dealing with the pandemic we face today could consist of. In the first part, we give an account of the current situation in terms of the remarkably ambiguous experience brought about by the intrusion of the COVID-19 virus, which has confronted us with a threat that is radically transcendent and immanent at the same time. In the second part, we go deeper into specific insights that have come about in the wake of this crisis, showing that these insights can be taken in two directions. We can try and align them with what we already know, or we can try to take seriously the unforeseen novelty of the situation. However, in the third part, we argue that we can still answer in a different, more fundamental and truly educational manner. This consists of “being taught” by the virus, thereby re-establishing our relation with the world and its human and non-human “indwellers”. This comes down to reorienting our educational endeavours towards earth-bound study practices, with a view to coming up with new answers to the “old” question of how to live well together.
Caring Critique. Exploring Pedagogical Spheres Between Critical and Post-Critical Approaches
Authors: Laner Iris
Published: May 2021

Preservation, positive affection, hope and experience are some of the core concerns of post-critical pedagogy. In order to highlight them, post-critical approaches regard it as necessary to refuse critical action on the one hand and separate the pedagogical from the political sphere on the other. In my paper I will suggest that there is a possibility to stress post-critical ideas and the need to rethink what pedagogical thinking and action is about without abandoning the critical attitude and the orientation towards the political. This possibility is bound to an inverse perspective on critique and politics. In this inverse view, which I develop engaging with recent debates in critical theory, critique can be framed as a situated engagement that faces the other within a lively present experience. Politics can be understood as variable forms of living together with humans and non-humans on the basis of shared times and spaces. Bringing in this perspective, makes it possible to go beyond the critique-post-critique-struggle and introduce an approach that is sympathetic with both critical and post-critical concerns.
BIDeconomics Perú: Oportunidades para la recuperación y el crecimiento sostenible y resiliente
Authors: Bermúdez Tomás , Deza María Cecilia , Beverinotti Javier , Moreno Kenji
Published: May 2021

Perú es un referente de éxito económico en la región. El país capitalizó las reformas implementadas en diferentes frentes durante los noventa para sentar las bases del crecimiento y la movilidad social observados en la primera década del presente milenio. El contexto externo favorable otorgó un impulso adicional, permitiéndole captar inversiones e importantes recursos fiscales necesarios para lograr una reducción sin precedentes en las tasas de pobreza y pobreza extrema. Si bien el crecimiento es condición necesaria para el desarrollo, no es suficiente. La desigualdad no se redujo en la misma magnitud que la pobreza. Como resultado de ello, se generaron bajos niveles de productividad, condiciones laborales precarias, y la consolidación de la informalidad como la modalidad más común de trabajar y hacer negocios. La baja productividad es también resultado de una asignación de recursos poco eficiente producto del diseño de políticas que tienen espacios de mejora. La pandemia del covid-19 trajo consigo una recesión de magnitudes históricas de la que el país se está recuperando dados los esfuerzos del gobierno por emprender una reactivación sin descuidar el control de los contagios y la vacunación. Pero esta recuperación no está exenta de riesgos. Retomar una senda de crecimiento compatible con la convergencia de ingresos requerirá que se aceleren las reformas necesarias para mejorar la calidad del capital humano, reducir la informalidad, brindar servicios de infraestructura de calidad, promover la innovación y la transformación digital y aprovechar las oportunidades de nuevos negocios que traerá la reconfiguración de las cadenas de valor en la post pandemia. BIDeconomics Perú es el producto de una serie de estudios y trabajos analíticos que busca, desde una perspectiva multisectorial, sentar las bases para romper las inercias y perseguir nuevas fuentes de reactivación y crecimiento en épocas tan trascendentales como las que vivimos actualmente.
Experimental Study on the Treatment of Rural Domestic Wastewater Using the Multi-Soil-Layering System Filled with Sludge-Based Biochar
Authors: Wang Jingrui , Zhang Zechao , Guo Ying , Zhang Liyong , Liu Junliang
Published: May 2021

This paper aims to improve the treatment effect of the multi-soil-layering system (MSL) on rural domestic wastewater. For this, sludge-based biochar materials were selected in the experiments to study its impacts on the treatment of rural domestic wastewater using the MSL. The comparative experiments were conducted for the three MSL systems filled with different materials: the sludge-based biochar (a), wood chips (b), and charcoal (c). The results showed that when the sludge-based biochar material was used as a filler, the removal effect of COD, NH4+-N, TN, TP is better than that of wood chips and charcoal, and the removal rates were 80%, 90%, 65% and 92%, respectively, meeting the Grade A standard specified in the Hebei Province Rural Domestic wastewater Discharge Standard (DB13/2171-2015); hydraulic loading rates (HLRs) have a great impact on the removal of pollutants, and the pollutant indicators in the system (a)re affected by the HLRs in different degrees, i.e., NH4+-N>TP>COD>TN from high to low; considering the treatment efficiency and pollutant removal effect, the HLRs should be selected between 800L/(m2·d) and 1200L/(m2·d). It’s concluded finally that the sludge-based biochar material can strengthen the removal effect of the MSL system. This study is of theoretical value for the further research on MSL system and resource utilization of the sludge.
Influence of Basalt Fiber-Reinforced Cement-Based Composite on Slope Stability
Authors: Yang Yiyun
Published: May 2021

Slope instability may be caused by the action of external load or the lack of internal shear strength. The traditional limit equilibrium method cannot accurately calculate the safety coefficient of slopes enhanced by fiber-reinforced cement piles. Few scholars have discussed the anti-slip property, structural form, and design calculation of fiber-reinforced composite cement piles. Therefore, this paper chooses to analyze the influence of basalt fiber-reinforced cement-based composite (BFRCBC) on slope stability. On the one hand, the authors analyzed the anti-crack mechanism of BFRCBC: the strength analysis was carried out by the rule of mixtures, the anti-crack analysis was implemented by the fiber spacing theory, and the entire anti-crack process was discussed in details. On the other hand, the authors constructed a slope model, and performed the relevant stability analysis. Experimental results show that the BFRCBC cement piles can effectively enhance the stability of the slope.
SIGNIFICADOS E EXPERIÊNCIAS DE MULHERES QUE VIVENCIARAM O PARTO HUMANIZADO HOSPITALAR ASSISTIDO POR ENFERMEIRA OBSTÉTRICA
Authors: Baggio Maria Aparecida , Pereira Fernanda De Castro , Cheffer Maycon Hoffmann , Machineski Gicelle Galvan , Reis Alessandra Crystian Engles dos
Published: May 2021

Objetivo: compreender os significados e experiências de mulheres que vivenciaram o processo de parto humanizado hospitalar assistido por enfermeira obstétrica e a motivação para essa escolha. Método: estudo qualitativo com doze mulheres, por meio de entrevistas semiestruturadas, após sessenta dias do parto. A análise temática de conteúdo guiou a análise dos dados. Resultados: quatro categorias: motivações para o parto humanizado hospitalar assistido por enfermeira obstétrica; experiência e significados atribuídos ao parto; experiência e significados atribuídos à participação do companheiro e outras pessoas da escolha da mulher; experiência e significados atribuídos aos profissionais. Conclusão: a experiência do parto foi considerada única, grandiosa; um momento singular, fantástico, intenso, emocionante. As mulheres se sentiram respeitadas, fortes, vitoriosas. O nascimento foi a maior experiência de amor, imbuído de respeito. A enfermeira obstétrica transmitiu paz, segurança e tranquilidade durante o parto; promotora de diálogo e respeito em cada fase, demonstrando conhecimento, capacidade técnica e empatia.
OCORRÊNCIA DE COMPLICAÇÕES NO PERÍODO GESTACIONAL EM MULHERES COM IDADE MATERNA AVANÇADA
Authors: Aldrighi Juliane Dias , Ribeiro Suelen Da Silva , Chemim Andressa Kachel , Wall Marilene Loewen , Zuge Samuel Spiegelberg , Piler Adriana Aparecida
Published: May 2021

Objetivo: analisar a associação entre complicações e idade materna avançada durante a gestação. Método: estudo retrospectivo baseado na análise de prontuários de mulheres em idade avançada que tiveram parto em um hospital-escola do Sul do Brasil. A coleta ocorreu de 2015 a 2018. Realizaram-se análises recorrendo aos testes Qui-Quadrado de Pearson e/ou exato de Fisher, U de Mann-Whitney e razão de prevalência. Resultados: avaliaram-se 1336 prontuários. As complicações HAS pré-gestacional, pré-eclâmpsia e DMG apresentaram maiores médias de idade materna. Mulheres acima de 40 anos apresentaram 1,06 vezes maior probabilidade de desenvolver pré-eclâmpsia e 1,33 vezes de desenvolver crescimento intrauterino restrito. Conclusão: O aumento da idade mostrou relação com complicações, principalmente em gestantes acima de 40 anos. É necessário, portanto, atenção da enfermagem a mulheres nessa faixa etária, considerando a tendência crescente de gestações em idade avançada.