bluuebunny/crossref_metadata_2025 huggingface dataset:
BASE GROWTH TEMPERATURE AND PHYLLOCHRON FOR KIKUYU GRASS (Cenchrus clandestinus; Poaceae)
Authors: Acero Camelo Ruth Amanda , Molina Manuel Ricardo Esteban , Parra Coronado Alfonso , Fischer Gerhard , Carulla Fornaguera Juan Evangelista
Published: June 2021

In order to estimate the base temperature (Bt) of growth through the appearance of leaves and calculate the phyllochron for kikuyu grass, three plots were established on three farms in the Provincia of Ubaté (Cundinamarca, Colombia) located at different altitudes (2560, 2640, 3143 m. a. s. l.). Measurements were made in four cycles in a period of eight months. The Bt was estimated by the least coefficient of variation method using a second order regression model and the model obtained was validated by the cross-validation method. The Bt values for the first, second, third and fourth leaf were 4.02, 3.68, 3.93, and 3.62 ° C, respectively. For the appearance of the first leaf, the kikuyu required more thermal time (TT) (97.5 accumulated growing degree days (AGDD)) than for the second (74.2 AGDD), third (73.8 AGDD) and fourth leaf (76.0 AGDD) (p<0.05). There were no differences in TT among farms (p> 0.05). There was a tendency to a greater number of days required to reach each leaf stage in the farm located at higher altitude and with lower mean temperature. The validation showed an adequate adjustment (r2 = 0.94) and a substantial concordance (CCC = 0.97) between the observed values and the predicted values for the estimated TT with the Bt value obtained for each leaf stage. The results of Bt for kikuyu grass obtained, will allow to make more precise predictions about the phyllochron and generate growth models close to reality.
IDENTIFICATION OF ENDOPHYTIC BACTERIA OF SEEDS FROM Cedrela odorata L. (Meliaceae) WITH BIOTECHNOLOGICAL CHARACTERISTICS
Authors: Espinosa Zaragoza Saúl , Sánchez Cruz Ricardo , Sanzón Gómez Diana , Escobar Sandoval Margarita C , Yañez Ocampo Gustavo , Morales Constantino Mario A , Wong Villarreal Arnoldo
Published: June 2021

In the present study, 62 endophytic bacterial strains of cedar seeds (Cedrela odorataL.), collected in the municipalities of Huehuetán, Motozintla, and Pijijiapan in the state of Chiapas, Mexico were isolated. The goal was to identify characteristics of biotechnological interest such as biocontrol, promotion of plant growth, and growth in aromatic compounds. The strains were identified by the partial sequence of the 16S ribosomal gene as belonging to the Bacillusgenus. The biocontrol capacity of phytopathogenic fungi, production of indoleacetic acid (IAA), solubilization of phosphate, and growth in xenobiotic compounds (phenanthrene, benzene, anthracene, or phenol) were detected in 26 strains of the 62 isolates. 21 % of the strains inhibited the mycelial growth of Alternaria solaniand Fusariumsp., and 13 % of the Phytophthora capsicioomycete. IAA production was detected in 24 isolates, phosphate solubilizing activity was identified in 18 isolates, while the ability to grow in the presence of phenanthrene and benzene was found in 26 isolates; 24 isolates grew in the presence of anthracene and only two isolates grew in phenol as the only carbon sources. This is the first report of the isolation and identification of endophytic bacteria from cedar seeds, where biotechnological characteristics were detected for biological control, promotion of plant growth, and growth in the presence of xenobiotic compounds.
A new record for the milk frog Trachycephalus coriaceus (ANURA: HYLIDAE) from teles pires river, South Amazonia, Brazil
Authors: Gonçalves Ferreira Vanessa , Thaler Rafaela , Folly Henrique , Alves da Silva Leandro
Published: June 2021

Herein, we report a new record of the milk frog Trachycephalus coriaceusfor the Brazilian southern Amazonia and provide an updated geographic distribution map. We collected one specimen of T. coriaceuson 8 november 2016, during a nocturnal survey inside a dense ombrophilousforest in the right bank of the Teles Pires River, municipality of Jacareacanga, southern of Pará State. The record of T. coriaceusto Jacareacanga is the first to the State. The disjoint geographic distribution of this species along de Amazonia may just reflect the paucity of amphibian knowledge throughout this biome and the difficulty to detect this species in the field, given its explosive reproductive behavior.
Estado del arte sobre el acoso sexual callejero: un estudio sobre aproximaciones teóricas y formas de resistencia frente a un tipo de violencia basada en género en América Latina desde el 2002 hasta el 2020
Authors: López María Claudia
Published: June 2021

El acoso sexual callejero es una forma de interacción que se da en lugares públicos y comprende exhibicionismo, persecuciones, acoso expresivo, físico y verbal de contenido sexual y no correspondido. Este estudio indaga las aproximaciones teóricas e iniciativas sociales sobre el acoso sexual callejero como un tipo de violencia de género en Latinoamérica. Para ello, se desarrolló una búsqueda en fuentes de información utilizando ciertos criterios, tales como: espacio público, ciudadanía sexual, violencia y ciudades seguras. A partir de los textos encontrados se hace una conceptualización del acoso como término y como un tipo de violencia; además se clasifica de acuerdo con sus modalidades y su diferencia con otros tipos de acoso según las relaciones de poder, el anonimato, el contexto público, el consentimiento y la connotación sexual. Se concluye que el acoso es un tipo de violencia sexual que afecta el uso del espacio público en condiciones de igualdad.
Assessment of the use of tropical peats as local alternative materials for the adsorption of Pb, Zn and Cd: An equilibrium study
Authors: Raimondi Isabela Monici , Rodrigues Valéria Guimarães , Lima Jacqueline Zanin , Marques Jéssica Pelinsom , Vaz Luiz Augusto Artimonti , Vieira Eny Maria
Published: June 2021

Peat is an organic material that has been widely used as an efficient and low-cost adsorbent. As many studies tend to focus on temperate peats, there is a lack of knowledge about the adsorption mechanism of tropical peats. This paper investigates the use of two Brazilian peats (Cravinhos - C and Luis Antônio - LA) from the Mogi-Guaçu river basin for the adsorption of lead (Pb), zinc (Zn), and cadmium (Cd), in order to contribute to the use of local and easy access materials to remediate contaminated sites. The peats adsorbed a high percentage of cations, especially Pb cations (100.0-46.3%), with commercial peat C showing higher adsorption than peat LA. The removal order was Pb2+ > Cd2+ ≥ Zn2+ for C and Pb2+ > Zn2+ > Cd2+ for LA. The batch data for both peats and for all metals were better fit by the Langmuir isotherm, with adsorption capacities (qm) for Pb, Zn, and Cd of 37.3134, 29.0674 and 21.2890 mmol kg-1 in peat C and 21.7391, 14.2550 and 3.6460 mmol kg-1 in LA, respectively, values comparable to those of other peats and biosorbents. The studied peats are considered efficient, alternative and low-cost adsorptive materials for these metals. The proximity of peatlands to areas with high potential for contamination necessitates the use of local materials to reduce remediation costs.
Is The Merchant of Venice a Comedy or a Tragicomedy?
Authors: Ludwig Carlos Roberto
Published: June 2021

This essay aims at discussing some issues in the play The Merchant of Venice, by William Shakespeare. Even though some may assume that the play is a comedy, the problem of its literary genre is a rather problematic issue today. Some critics debate its inclusion in the comedies, because it is not at all a funny play. The label ‘comedy’ did not suggest that it was a funny play in Shakespeare’s age. If some critics think that it is not a funny play, Shakespeare may have designed Shylock as a tragic character. In fact, the play’s effects of Shylock’s energy and tragic dimensions deeply influenced the audience in the moment when it was first staged. This essay first discusses the problem pathos and inwardness in Shylock’s speech. After that, it discusses the issue of literary genre and argues that it should be classified as a tragicomedy.
A TIME SERIES FORECASTING MODEL BASED ON LINGUISTIC FORECASTING RULES
Authors: Phong Pham Đinh
Published: June 2021

The fuzzy time series (FTS) forecasting models have been being studied intensively over the past few years. Most of the researches focus on improving the effectiveness of the FTS forecasting models using time-invariant fuzzy logical relationship groups proposed by Chen et al. In contrast to Chen’s model, a fuzzy set can be repeated in the right-hand side of the fuzzy logical relationship groups of Yu’s model. N. C. Dieu enhanced Yu’s forecasting model by using the time-variant fuzzy logical relationship groups instead of the time-invariant ones. The forecasting models mentioned above partition the historical data into subintervals and assign the fuzzy sets to them by the human expert’s experience. N. D. Hieu et al. proposed a linguistic time series by utilizing the hedge algebras quantification to converse the numerical time series data to the linguistic time series. Similar to the FTS forecasting model, the obtained linguistic time series can define the linguistic, logical relationships which are used to establish the linguistic, logical relationship groups and form a linguistic forecasting model. In this paper, we propose a linguistic time series forecasting model based on the linguistic forecasting rules induced from the linguistic, logical relationships instead of the linguistic, logical relationship groups proposed by N. D. Hieu. The experimental studies using the historical data of the enrollments of University of Alabama observed from 1971 to 1992 and the daily average temperature data observed from June 1996 to September 1996 in Taipei show the outperformance of the proposed forecasting models over the counterpart ones.
Hypotension and survival: diagnostic criteria in Russian and United States population
Authors: Vilkov V. G. , Balanova Yu. A. , Kapustina A. V. , Muromtseva G. A. , Shalnova S. A.
Published: June 2021

Aim. Based on Russian and United States population studies, to determine the criterion for distinguishing between normal and low blood pressure (BP), which is the most significant for predicting all-cause mortality.

Material and methods. We used data from prospective Russian studies of 14730 men aged 19-82 years (9307 deaths per 342309 person-years of followup) and 6141 women aged 18-72 years (2101 deaths per 158727 person-years of follow-up), and two United States population studies: the First National Health and Nutrition Examination Survey (NHANES I) in conjunction with the NHANES I Epidemiologic Followup Study, and the Second National Health and Nutrition Examination Survey (NHANES II) in conjunction with the NHANES II Mortality Study. The total American cohort included only white subjects: 8618 men aged 25-75 years (3130 deaths per 121794 person-years of follow-up) and 11135 women 25-75 years (2465 deaths per 176676 person-years of follow-up). Primary examinations were carried out in 1971-1982, while the latest information on the subjects’ survival status was obtained in 2017 (Russia) and 1992 (USA). KaplanMeier curves and Cox proportional hazards models were created; all-cause death was taken into account as an outcome.

Results. Survival analysis using Cox models, in which, in addition to BP levels, sex, age and risk factors were taken into account, showed that in persons with a pronounced BP decrease, survival is worse in comparison with those with normal BP. Mean dynamic BP, unfavorable for all-cause mortality, was below 70 and 68 mm Hg and 76 and 72 mm Hg in men and women in the Russian and US cohorts, respectively.

Conclusion. Not only hypertension, but also severe hypotension is associated with increased all-cause mortality compared to normal BP. Survival decrease is manifested in severe hypotension, subject to sex and adjustment for age and risk factors.
Age-related trends of physical activity and work capacity among men and women in an open urban population
Authors: Akimov A. M.
Published: June 2021

Aim. To establish parameters of physical activity (PA) and work capacity among men and women in an open population of Western Siberia city, depending on age.

Material and methods. Cross-sectional epidemiological studies were carried out among open male and female population of a middle-urbanized city of Western Siberia (Tyumen). Representative samples of 1000 people aged 25-64 years (250 people in each life decade) were analyzed. PA and work capacity were determined according to the WHO MONICA-psychosocial questionnaire “Awareness and Attitude towards Health”.

Results. Age-related trends among young men of middle urbanized Western Siberia city were manifested by PA increase during the last year (in 25-34 yearage group — in 20,9%, in the general population — in 13,8% (p=0,0205)). During the last year, a decrease and an increase in work capacity was revealed in young women (33,6%) and young men (17,5%), respectively. Age-related trends among middle-aged people of both sexes were manifested by low self-esteem — in men by the sixth decade of life (0,6% vs 8,9%, p=0,0002), in women — by the fifth decade of life (3,4% vs 8,2%, p=0,0442). In men, with a decrease in PA and work capacity during the last year, an increase in outdoor activities was revealed (15,8% vs 27,7%, p=0,0020).

Conclusion. Since the promotion of physical literacy should be among the state priorities, the presented data can serve as the basis for planning populationbased preventive measures, intended for working-age men and women in middleurbanized Siberian cities.
Retrospective analysis of electronic health records of patients with heart failure: the first Russian experience
Authors: Gilyarevsky S. R. , Gavrilov D. V. , Gusev A. V.
Published: June 2021

The article presents the first experience of analyzing the treatment quality of hospitalized patients with heart failure based on electronic health records (EHR). We analyzed EHR of patients hospitalized in three large hospitals in Kirov. The results of the analysis indicated insufficient detailed information in the EHR, which complicates analyzing the accuracy of diagnosis and therapy quality. In particular, attention is drawn to the disproportionate number of patients with heart failure with reduced and preserved ejection fractionю This, apparently, is due to the low prevalence of assessing brain natriuretic peptides and conducting Doppler echocardiography. A separate part of the analysis is devoted to assessing the therapy quality in patients with concomitant diabetes. Despite the study limitations, the presented results can be useful for improving the quality of EHR filling for performing further observational clinical trials.
BETWEEN PROLENE®, ULTRAPRO® AND BARD SOFT® MESHES WHICH PRESENTS THE BEST PERFORMANCE IN THE REPAIR OF THE ABDOMINAL WALL?
Authors: UTRABO Carlos Alberto Lima , CZECZKO Nicolau Gregori , BUSATO Cesar Roberto , MONTEMÓR-NETTO Mário Rodrigues , LIPINSKI Leandro , MALAFAIA Osvaldo
Published: June 2021

ABSTRACT Background: In the definition of the mesh to be used to correct hernias, porosity, amount of absorbable material and polypropylene should be considered in the different stages of healing process. Aim: To evaluate the inflammatory reaction in the use of macro and microporous meshes of high and low weight in the repair of defects in the abdominal wall of rats. Methods: Ninety Wistar rats (Rattus norvegicus albinus) were used. The animals were submitted to similar surgical procedures, with lesion of the ventral abdominal wall, maintaining the integrity of the parietal peritoneum and correction using the studied meshes (Prolene®, Ultrapro® and Bard Soft®). Euthanasia was performed at 30, 60 and 120 days after surgery. The abdominal wall segments were submitted to histological analysis using H&E, Masson’s trichrome, immunohistochemistry, picrosirius red and tensiometric evaluation. Results: On the 120th day, the tensiometric analysis was superior with Ultrapro® macroporous mesh. The inflammatory process score showed a significant prevalence of subacute process at the beginning and at the end of the study. Microporous meshes showed block encapsulation and in macroporous predominance of filamentous encapsulation. Conclusion: The Ultrapro® mesh showed better performance than the others in healing process of the abdominal wall.
Preparação para aposentadoria de docentes universitários: revisão integrativa
Authors: Oliveira Isabel Cristine , Megier Elisa Rucks , Halberstadt Bruna Marta Kleinert , Beck Carmem Lúcia Colomé , Santos José Luis Guedes dos , Soder Rafael Marcelo
Published: June 2021

Resumo Objetivo analisar as evidências disponíveis na literatura relacionadas à preparação para aposentadoria de docentes universitários. Método revisão integrativa realizada nas bases de dados LILACS, Web of Science, PSYCNET, PubMed e busca manual, a partir das palavras-chave “aposentadoria” e “docente”. Foram recuperados treze estudos e analisados pela hierarquia de evidência no primeiro semestre de 2019. Resultados os estudos contemplam questões complexas e estão relacionadas à situação de saúde pessoal; relações familiares; aspectos financeiros e questões organizacionais e institucionais. Destacaram-se o investir em políticas institucionais para planejamento efetivo da aposentadoria, considerando as relações laborais, insatisfações e o reconhecimento do exercício no ensino e na pesquisa, assim como, atentar-se aos sentimentos de exaustão emocional, fadiga ou desgastes decorrentes das cargas de trabalho. Conclusão a aposentadoria é um evento subjetivo. A decisão por aposentadoria está relacionada ao planejamento implícito de se manter ativo, seja no ambiente laboral ou na pós-aposentadoria. Portanto, a preparação para a retirada do ambiente laboral pode promover e favorecer uma transição flexível e progressiva, com qualidade e saúde.
Anti-mycobacterial and anti-inflammatory activity of restinga plants: a dual approach in searching for new drugs to treat severe tuberculosis
Authors: Araujo Marlon Heggdorne de , Simão Thatiana Lopes Biá Ventura , Konno Tatiana Ungaretti Paleo , Guimarães Denise Oliveira , Leal Ivana Correa Ramos , Lasunskaia Elena , Muzitano Michelle Frazão
Published: June 2021

Abstract Tuberculosis (TB) still constitutes a threat to public health in various regions of the world. The existing treatment is long and has many side effects. The need to identify new anti-TB compounds and also adjuvants to control exacerbated inflammation in severe TB cases is relevant. Therefore, the objective of this study was to evaluate the anti-mycobacterial activity of extracts and fractions in vitro from plant species collected in the Restinga of Jurubatiba, in Rio de Janeiro state, Brazil. In addition, to verify their immunomodulatory action and cytotoxicity on macrophages. The dichloromethane fraction of Kielmeyera membranacea and Eremanthus crotonoides showed the lowest MIC50 against Mycobacterium bovis BCG (0.95 ± 1.08 and 2.17 ± 1.11 μg/mL, respectively) and M. tuberculosis H37Rv (4.38 ± 1.19 and 15.28 ± 1.21 μg/mL, respectively). They were also able to inhibit the NO and TNF-α production in LPS-stimulated macrophages, without being toxic to cells. Using gas chromatography analysis coupled with mass spectrometer it was possible to suggest the presence of fatty acids and terpenes in the most promising fractions. Those compounds have been described for their anti-mycobacterial activity. These results have enabled identifying Kielmeyera membranacea and Eremanthus crotonoides as the most promising studied species in searching for new anti-TB compounds with dual activity.
Tecnologia Educacional sobre limpeza e desinfecção de brinquedos para ambientes escolares frente à pandemia da COVID-19
Authors: Braga Patrícia Pinto , Romano Márcia Christina Caetano , Gesteira Elaine Cristina Rodrigues , Souza Dayse Bazílio Rosa de , Pinto Marina Guedes , Santos Verônica Gomes dos
Published: June 2021

RESUMO Objetivo descrever a construção e validação do conteúdo e aparência de tecnologia educacional sobre limpeza e desinfecção de brinquedos para ambientes escolares e creches, no contexto de pandemia do coronavírus. Método Pesquisa metodológica de validação, orientada pela teoria da Psicometria. Realizada em três fases: (1) revisão bibliográfica (2) elaboração da tecnologia educacional (3) avaliação, aperfeiçoamento e validação do conteúdo e aparência da cartilha. Participaram 20 juízes e 16 profissionais da educação infantil. Para garantir a validação, consideramos o índice de validade de conteúdo de, no mínimo, 0,8. Os dados foram tratados no software Statistical Package for Social Science e submetidos à análise descritiva de distribuição de frequências. Resultados O índice de validade de conteúdo global foi de 0,99 para juízes e 0,96 para o público-alvo. Os domínios da cartilha apresentaram índice de validade de conteúdo superior a 0,8 sugerindo que é um material representativo, quanto à aparência e conteúdo. Conclusão e implicações para prática A cartilha digital pode ser considerada, no contexto das atividades educativas em enfermagem, instrumento capaz de favorecer orientações claras e confiáveis sobre a limpeza e desinfecção de brinquedos, para ambientes escolares, no cenário de pandemia do novo coronavírus.
A new species of Vriesea Lindl. (Bromeliaceae) from the Atlantic Rainforest of São Paulo State, Brazil
Authors: Martins Suzana Ehlin , Wanderley Maria das Graças Lapa
Published: June 2021

ABSTRACT A new species of Vriesea Lindl. is described and illustrated. Vriesea altobocainensis is only known for the Atlantic Forest of Serra da Bocaina. It is a robust epiphyte, characterized by a reddish inflorescence, and floral and primary bracts with an orbicular and broadly ovate shape; morphologically, it is close to Vriesea altodaserrae L.B.Sm. and Vriesea sceptrum Mez. However, the new species can be distinguished from these others mainly for the color, dimensions and shape of floral and primary bracts, number of inflorescence branches and number of flowers per branch.
Prescrição de exercícios físicos por inteligência artificial: a educação física vai acabar?
Authors: Oliveira Braulio Nogueira de , Fraga Alex Branco
Published: June 2021

RESUMO Neste ensaio, tratamos de aplicativos fitness que, autonomamente, prescrevem exercício físico e algumas possíveis repercussões para a Educação Física. A prescrição por meio de inteligência artificial articula um conjunto de variáveis para a elaboração do treinamento, aproximando-se do que denominamos de “protocolização das práticas corporais”. Considerando as características da tecnologia em questão, elencamos três pontos de reflexão aos profissionais de Educação Física: não restringir o sujeito a variáveis; não se subordinar a padrões preestabelecidos; e, por fim, reconhecer a potência do encontro. Logo, à máquina cabe articular um conjunto de variáveis; aos profissionais, desenvolver competências eminentemente “humanas”.
Chemical composition of Tanganyika grass under tree shading levels in a silvopastoral system
Authors: CARVALHO Carlos Augusto Brandão de , SILVA Pedro Henrique Ferreira da , ZANELLA Pablo Giliard
Published: June 2021

ABSTRACT This study aimed to evaluate the effect of different Clitoria fairchildiana tree shading levels on the Tanganyika grass (Megatyrsus maximus Jacq. cv. Tanganyika) chemical composition, in summer I (2011/2012), spring (2012) and summer II (2012/2013) seasons. For this purpose, an experiment was conducted in a completely randomized design with four treatments (shading levels) and five repetitions at Seropédica, state of Rio de Janeiro, Brazil. The following variables were evaluated: dry matter (DM), crude protein (CP), neutral detergent (NDF) and acid detergent (ADF) fiber, neutral (NDIP) and acid (ADIP) detergent insoluble protein, lignin (LIG) and mineral matter (MM) contents. Data were analyzed by PROC MIXED SAS®, with repeated measures in time, and treatment means compared by Tukey’s test (P<0.05) or by PROC REG (P<0.05 for regression analysis. There was a significant interaction between season and shading level for DM, CP, NDF, ADF, NDIP, ADIP and MM contents (P<0.05). Lignin content was only influenced by shading level (P<0.05). The DM, NDF, ADF and lignin contents were reduced by shading increase while CP, NIDP and MM contents were increased. Higher ADIP contents were found only in the spring. The increase in Clitoria fairchildiana tree shading improves the chemical composition of Tanganyika grass forage during summer season.
Avaliação externa da qualidade da identificação entomológica de triatomíneos realizada na Rede de Laboratórios Públicos em Pernambuco, 2017
Authors: Silva Maria Beatriz Araújo , Borba Rosiely Felix Bezerra , Ferreira Geane Maria de Oliveira Gonçalves , Medeiros Carolina de Araújo , Rocha Dayse da Silva
Published: June 2021

Resumo Objetivo: Avaliar a qualidade da identificação de triatomíneos na rede de laboratórios do estado de Pernambuco, Brasil. Métodos: Os nove laboratórios participantes receberam material de apoio com as chaves dicotômicas e um painel composto por sete insetos triatomíneos conhecidos no estado, para identificação da situação do espécime no recebimento (estrutura completa ou danificada), espécie e sexo. Resultados: Nove laboratórios de 12 aderiram ao estudo. A proporção de acerto para identificação do sexo foi de 56/63, e para espécie, 45/63, não apresentando relação direta com a ocorrência de danos nas estruturas morfológicas durante o transporte dos insetos. Para Panstrongylus megistus, houve acerto em todos os espécimes (9/9), enquanto para espécies do gênero Rhodnius a proporção foi menor (3/9). Conclusão: Apesar do bom desempenho na identificação entomológica, as fragilidades observadas poderão orientar ações para melhoria na rede de laboratórios e serão essenciais para os programas de controle vetorial da doença de Chagas.
Bazı buğday çeşitlerinin Buğdayda göçerten hastalığına sebep olan Gaeumannomyces graminis [Sacc.] Arx & Oliver var. tritici [J. Walker]’ye karşı reaksiyonlarının belirlenmesi
Authors: Büyük Orhan , Ünal Filiz
Published: June 2021

Bu çalışma buğdayda göçerten hastalığına sebep olan Gaeumannomyces graminis [Sacc.] Arx & Oliver var. tritici [J. Walker])’ye karşı bazı buğday çeşitlerinin reaksiyonlarını belirlemek amacıyla 2018 ve 2019 yıllarında Konya ve Tekirdağ illerinde doğal enfeksiyon ile tarla koşullarda yürütülmüştür. Çalışmada 16 ekmeklik ve 4 makarnalık buğday çeşidinden oluşan 20 buğday çeşidinin hastalığa karşı reaksiyonları test edilmiştir. Çalışma sonucunda, Şanlı, Gerek-79, Kınacı-97, Bezostaja 1, Mirzabey 2000, Dağdaş-94, Karahan-99 çeşitleri hastalığa orta dayanıklı (MR) reaksiyon gösterirken, Demir 2000, Altay 2000, Sönmez 2001, Kızıltan-91, Eminbey, Kenan Bey, Kunduru 1149 ve Pehlivan çeşitleri ise orta hassas (MS) reaksiyon göstermişlerdir. İkizce 96 çeşidi ise hastalığa en hassas çeşit bulunmuştur. Hastalığa dayanıklı çeşit bulunamamıştır. Hastalığın yoğun görüldüğü alanlarda orta dayanıklı olarak belirlenen çeşitler tercih edilebilir.
TÜRKİYE’DE YENİ KEYNESYEN ÜCRET PHILLIPS EĞRİSİ GEÇERLİ MİDİR? ARDL SINIR TESTİ YAKLAŞIMINDAN BULGULAR
Authors: OZAN Engin Can , BAKIRTAŞ İbrahim
Published: June 2021

Bu araştırmanın amacı, Yeni Keynesyen Ücret Phillips Eğrisi (NKWPC)’nin Türkiye için varlığını test etmektir. Bu amaç doğrultusunda, ARDL sınır testi yaklaşımı tahmin yönteminden faydalanılarak analizler yapılmıştır. Araştırma 1995:Q1-2019:Q4 dönem aralığında derlenen verileri kapsamaktadır. Yeni Keynesyen görüşün varsayımlarına bağlı olarak yapılan analiz bulgularına göre, Türkiye için ücret enflasyonu ile işsizlik oranı arasında anlamlı ve ters yönlü bir ilişki vardır. Bu bulgular ışığında gelecek dönem ücretlerin ve fiyatların tahminlerinde ve yaşanan şoklar sonrasında ekonominin tekrar dengeye gelme hızının tespitinde, Türkiye’deki politika yapıcıların Yeni Keynesyen Ücret Phillips Eğrisinden faydalanarak politika üretebilecekleri sonucuna ulaşılmıştır.
Entrer dans le langage par le plurilinguisme et la multimodalité.
Authors: AZAOUI Brahim
Published: June 2021

Cette contribution présente une étude menée dans le cadre d’un projet collaboratif réalisé en partenariat avec des enseignantes de maternelle dans une école REP+, une conteuse professionnelle et des mères conteuses. En nous appuyant sur les travaux en sémiotique sociale et gestuelle, nous défendons une perspective plurilittéracique, au sens que lui donne le New London Group, qui prendrait en considération les ressources plurilingues et multimodales dont peut se saisir tout individu pour faire sens (re)construire, donner à voir ou (re)négocier son identité (plurielle) en contexte. Cette perspective invite à déconstruire une appréhension homogène des interactions, de la réalité et des apprentissages fondée uniquement sur le verbal. En réception, tout interlocuteur s’appuie sur une pluralité de ressources sémiotiques, constituées aussi bien des gestes manuels, des répertoires linguistiques que des supports matériels pour élaborer le sens d’un énoncé. Ainsi, nos résultats montrent comment des enfants de 5 ans mobilisent au coup par coup des tactiques multimodales et plurilingues pour faire sens de l’histoire racontée par des mères d’élèves en langue étrangère. Considéré au niveau socio-scolaire, le projet a permis de mettre au jour des effets sur le plan identitaire ainsi que sur celui des apprentissages langagiers.
The structure, phase composition, and residual stresses of diffusion boride layers formed by thermal-chemical treatment on the die steel surface
Authors:   Institute of Physical Material Science of the Siberian Branch of the Russian Academy of Science, Ulan-Ude, Russian Federation, Mishigdorzhiyn Undrakh ,   East Siberia State University of Technology and Management, Ulan-Ude, Russian Federation, Ulakhanov Nikolay ,   East Siberia State University of Technology and Management, Ulan-Ude, Russian Federation,   Institute of Physical Material Science of the Siberian Branch of the Russian Academy of Science, Ulan-Ude, Russian Federation, Tikhonov Aleksandr ,   Irkutsk National Research Technical University, Russian Federation,   East Siberia State University of Technology and Management, Ulan-Ude, Russian Federation, Gulyashinov Pavel ,   Baikal Institute of Nature Management Siberian branch of the Russian Academy of Sciences, Ulan-Ude, Russian Federation,   East Siberia State University of Technology and Management, Ulan-Ude, Russian Federation
Published: June 2021

Introduction. Control and management of technological residual stresses (TRS) are among the most critical mechanical engineering technology tasks. Boriding can provide high physical and mechanical properties of machine parts and tools with minimal impact on the stress state in the surface layers. The purpose of this work is to determine the temperature modes of diffusion boriding, contributing to a favorable distribution of TRS in the surface layer of die steel 3Kh2V8F. The paper considers the results of studies on the TRS determination by the experimental method on the UDION-2 installation in diffusion layers on the studied steel surface. Boriding was carried out in containers with a powder mixture of boron carbide and sodium fluoride as an activator at a temperature of 950 °C and 1050 °C for 2 hours. The obtained samples of steels with a diffusion layer were examined using an optical microscope and a scanning electron microscope (SEM); determined the layers' microhardness, elemental, and phase composition. The experiments resulted in the following findings: as the boriding temperature rose from 950 °C to 1050 °C, the diffusion layer's thickness increased from 20 to 105 μm. The low-temperature mode of thermal-chemical treatment (TCT) led to the formation of iron boride Fe2B with a maximum boron content of 6 % and a microhardness up to 1250 HV. A high-temperature mode resulted in FeB formation with a top boron content of 11 % and a microhardness up to 1880 HV. Results and Discussions. It is found that boriding at 950 °C led to a more favorable distribution of compression TRS in the diffusion layer. However, significant TRS fluctuations in the diffusion layer and the adjacent (transitional) zone could affect the operational properties after TCT at a given temperature. An increase in the TCT temperature led to tensile TRS's appearance in the layer's upper zone at a depth of up to 50 μm from the surface. Despite tensile stresses on the diffusion layer surface after high-temperature TCT, the distribution of TCT is smoother than low-temperature boriding.
Evaluation of the influence of the reaction rate of the thermodynamic subsystem on the dynamics of the cutting process in metalworking
Authors:   Don State Technical University, Rostov-on-Don, Russian Federation, Lapshin Victor , Rusanovsky Roman ,   Don State Technical University, Rostov-on-Don, Russian Federation, Turkin Ilya ,   Don State Technical University, Rostov-on-Don, Russian Federation
Published: June 2021

Introduction. Modern metalworking machines with CNC, allow to achieve a qualitatively new level of metal processing by cutting in metal turning. At the same time, it is possible to achieve the required shape, dimensional accuracy, as well as the relative position of the surfaces of the part, but such an indicator of the processing quality as the roughness of the treated surface, associated with the vibration activity of the tool, does not always meet the specified requirements. The factor determining the vibration mode of cutting in a metal-cutting lathe is the self-excitation factor of the cutting system, which is caused by additional feedbacks formed during the cutting process, one of which is the thermodynamic subsystem of the cutting system, which is the subject of research. Purpose of the work: due to the formation of a consistent model of the relationship between the subsystems that describe the force, heat and vibration reactions of the tool, an adequate description of the mechanism for reducing the vibration load on the cutting process is obtained. The paper studies the process of metal turning on metal-cutting machines with a detailed description of the interaction between the thermodynamic, power and vibration subsystems of the cutting system. Research methods: full-scale and numerical experiments in which the Matlab package of mathematical programs is used for data processing and analysis. Results and discussion. The results of full-scale and numerical experiments are presented, in particular, graphs of coordinate changes describing tool deformation, and data sets are obtained that reflect the dependence of the vibrational energy of tool movements on the reaction time of the thermodynamic subsystem of the cutting system. A qualitative assessment of the results of a full-scale experiment allows us to confirm the adequacy of both the model itself and the results of its modeling. The scope of application of the results obtained in the study is related to the possibility of preliminary preparation of the cutting wedge, which will provide a set value of the time constant of the thermodynamic subsystem, which in turn ensures the minimization of vibration energy. Conclusion: the mathematical model proposed in this paper adequately describes the mechanism of temperature influence on the vibration load of the turning process.
Tool profile stationarity while simulating surface plastic deformation by rolling as a process of flat periodically reproducible deformation
Authors:   T.F. Gorbachev Kuzbass State Technical University, Kemerovo, Russian Federation, Krechetov Andrey
Published: June 2021

Introduction. Surface plastic deformation is an effective way to improve the operating performance of machine parts. One of the promising approaches to the design of surface hardening technological processes is the technological inheritance mechanics. To calculate the hereditary parameters characterizing the accumulated deformation and damage to the metal, it is possible to simulate spinning as a process of plane fractional deformation, which significantly reduces the time required for modeling the process. However, upon rotation of the plane in which the stress-strain state is considered, the roller profile changes. The aim of the work is to assess the magnitude of the change in the roller profile in the deformation plane during deformation as an important factor ensuring the accuracy of the solution obtained. Research methods. The roll profile in the warp plane is defined by the intersection line of the roll surface and this plane. The paper presents the procedure for calculating the coordinates of the points of intersection lines, which are curves of the fourth order, depending on the geometric dimensions of the roller and the part, as well as the angle of inclination of the deformation plane. Results and discussion. To estimate the value of the roller profile change, the coordinates of the points of the intersection lines of the roller surface and the deformation plane are determined for the rolling modes corresponding to a sufficiently developed plastic deformation, the obtained lines are approximated in the coordinate system associated with the deformation plane, and the relative change in the coordinates of the intersection lines when the plane was rotated are estimated. As a result of the conducted analytical studies, it is found that even with developed plastic deformation, the relative change in the coordinates of the points of intersection lines does not exceed 0.1%. This indicates the possibility of using a stationary roller profile when simulating rolling using the plane fractional deformation model.
América Latina en el currículo chileno de Historia: análisis desde la literacidad crítica
Authors: Marolla-Gajardo Jesús , Saavedra Solís Camila
Published: June 2021

El presente artículo de investigación tiene por objetivo analizar el discurso escritode América Latina en el curriculum escolar y en los textos de estudio de CienciasSociales chilenos. Los materiales que se utilizaron para tal análisis son aquelloscreados desde el año 2009, hasta el año 2015, periodo de continuidad ministerialen cuanto programas y libros de estudio. Se indagó en los contenidos de los programas,tanto en la recurrencia con que se emplea el término América y América Latina,como desde el lugar que ocupa su discurso en la jerarquización de los contenidosy perspectivas con que se hace presente. La metodología empleada fue el análisisdocumental, sometiendo a análisis tales datos bajo la Literacidad Crítica y sus concepciones.Entre los principales resultados, encontramos que el contenido referidoa América Latina se encuentra desfavorecido en la jerarquización curricular frente arelatos centrados en una historia nacional chilena que fomenta los valores patrióticosy la identidad nacional mestiza, y otros contenidos desde la historia universal, lacual, en rigor, tiene relación con los procesos de los países poderosos occidentalesdesde aspectos bélicos y económicos, primordialmente. Por lo anterior, entre las principalesconclusiones conviene destacar la relevancia de trabajar con los estudianteslos programas oficiales pero desde una perspectiva crítica y peligrosa (Giroux, 1998).Además de fomentar una formación del profesorado que permita la crítica y la reformaa los programas oficiales como el planteamiento de materiales que reconozcanla diversidad.
Infancias trans: otra disrupción en las escuelas de la modernidad
Authors: Stewart Veronica , Narodowski Mariano , Campetella Maria Delfina
Published: June 2021

Este artículo de reflexión pretende exponer las consecuencias, en términos teóricos, de la presencia de alumnos trans en las escuelas. El supuesto es que la nueva situación es el resultado de nuevas posiciones de niños y adultos y de una consecuente transformación en la relación de autoridad y poder que media entre ambos, y se busca particularmente comprender el virtual impacto en la tecnología escolar de los altos niveles de autonomía infantil decurrentes[MM3]  de una decisión tan radical como la de modificar la identidad de género. Se parte del concepto de infancia de Ariés (1960), de tecnología escolar de Narodowski (1994) y de performatividad del género de Butler. Se argumenta que la escuela conforma y es conformada por el concepto moderno de infancia a la vez que tiene un rol protagónico en la construcción de género de sus estudiantes. El estudio concluye que el alumnado trans se presenta como disruptivo para la tecnología  escolar dado que su sola presencia atenta contra el concepto de infancia heterónoma y vulnerable y contra el concepto biologicista e inmutable de género que la escolarización había integrado a su devenir histórico.
Historiografía de la educación de las infancias en Iberoamérica. Aportes para la configuración de la Pedagogía Infantil como campo de saber
Authors: Martinez-Velasco Miguel Angel
Published: June 2021

El artículo de revisión tiene como propósito analizar las relaciones y tensiones de saber y poder que han venido configurando en Iberoamérica en torno a las investigaciones que se han ocupado de historiar la educación de las infancias; es decir de la educación de los niños y las niñas desde su nacimiento hasta el ingreso a la escuela primaria. Metodológicamente se empleó la lectura discursiva para dar cuenta de los discursos, instituciones y sujetos que se han objetivado para producir una naturaleza infantil para educar a los párvulos, al niño preescolar y a la primera infancia a partir de tres prácticas de saber: la educación preescolar, la educación infantil, la educación parvularia y la educación inicial. Como resultados se analiza la producción de un balance historiográfico en aras de ir configurando un campo de saber para la Pedagogía Infantil en el que se proponen y resignifican nuevos modos de relación entre el saber pedagógico, la historia social de la educación y el campo de estudios en infancias a partir de las relaciones entre la enseñanza, el desarrollo, el aprendizaje y la educación como conceptos articuladores que han posibilitado la formación de los niños y las niñas. Finaliza el artículo identificando los desafíos que deben afrontarse para la invención de un campo de experiencia en el que la Pedagogía Infantil posibilite la integración de la escolarización y la atención integral a la primera infancia para llevar a cabo la educación de las infancias en la contemporaneidad.
Álgebra óptima y soluciones invariantes para la ecuación de Chazy
Authors: Loaiza G , Acevedo-Agudelo Yeisson , Londoño-Duque Oscar
Published: June 2021

Se caracterizan las soluciones invariantes para la ecuación de Chazy a partir de los operadores generadores del álgebra óptima, la cual fue obtenida mediante el grupo de simetrías de Lie correspondiente a dicha ecuación.
Structure in Distance Learning: A Systematic Literature Review
Authors: KANDEMİR Bülent , KILIÇ ÇAKMAK Ebru
Published: June 2021

The research aims to determine the elements under the structural component in distance learning environments. The research was conducted as a systematic literature review. The research was conducted on a total of 54 studies. The studies were accessed through the electronic databases accessible at Gazi University. A PRISMA flow chart was used to select the studies. The classification of the studies into categories and codes was done using content analysis, in terms of the structural component. A total of 78 codes were found in 5 categories under which 5409 codings were made. It was found that under the structural component, the Technology category was the most frequently used. This category is followed by flexibility-rigidity, assessment, guidance and curriculum. The most frequently used code in the studies is individual feedback, which falls under the flexibility-rigidity category. As a result of the study, some suggestions were made for designers of distance education media. They should pay maximum attention to the flexibility-rigidity category to support students’ sense of belonging. It is recommended to use different (textual, audio/video) feedback methods in the learning environment. They are expected to pay more attention to the Curriculum category to support learner success. The roles of teachers and learners should be clearly defined. Technology should be planned to support all processes such as interaction, access to content, communication, sharing, collaboration, and evaluation that may be experienced in the learning environment. Formative evaluation should be considered important and more than one method of performance assessment should be used. Since technological platforms are the basic elements of communication, they should be used extensively in learning environments.
Impact of Stem Integrated Argumentation-Based Inquiry Applications on Students ' Academic Success, Reflective Thinking and Creative Thinking Skills
Authors: HASANÇEBİ Funda , GÜNER Ömer , KUTRU Cagla , HASANÇEBİ Mehmet
Published: June 2021

The purpose of the study is to determine the effect of argumentation-based inquiry approach (ABI) and STEM-supported ABI approach on students’ academic achievement, scientific creativity and reflective thinking skills for problem solving, and to determine students' views about the process. Explanatory sequential design, one of the mixed research methods, was used in the study. A total of 41students (N=20 boys, n=21 girls) studying in the seventh grade of a secondary school in north-east Turkey constitute the study group. In the study, the two classes that the same teacher attended was randomly determined where one was an ABI group (N=21) and the other a STEM-supported ABI group (N=20). The groups worked with the same teacher throughout the study. In the quantitative dimension of the study, Academic Achievement Test, Reflective Thinking Scale for Problem Solving, and Scientific Creativity Scale was used, while semi-structured interview form was used in the qualitative dimension. Independent Groups T Test and ANCOVA were applied in the analysis of quantitative data. Content analysis was performed in the analysis of qualitative data. In the research, it was concluded that students' reflective thinking skills for problem solving, scientific creativity and academic success are more developed in applications made by integrating STEM into the ABI approach.
Cell culture, transfection and imaging v1
Authors: Leonzino Marianna , Guillén-Samander Andrés
Published: June 2021

This protocol details the general preparation of cells for imaging and also for imaging experiments involving cellular hypotonic shock and cytosolic Ca2+ changes as they were performed in https://doi.org/10.1083/jcb.202010004.
Implicit Learning of the Time Interval Sequence
Authors: Agafonov A.Y. , Fomicheva A.D. , Starostin G.A. , Kryukova A.P.
Published: June 2021

The article considers the studies performed in the «Sequence Learning» paradigm. A special case of this experimental approach is the method of temporal sequences memorization. The elements of such sequences are time intervals instead of stimulus or their spatial localization. The item of the conducted and described study was implicit learning of the time interval sequence. The goal of the experiment was to check the possibility of unconscious acquisition of the temporal sequences, not related to the sequences of another type of organization. To process the obtained results, mixed linear models were used. It was found that the learning of time interval sequences can occur regardless of the presence of regularity in the reaction order (motor sequence) and without rules in stimuli organization (structural sequence) or in the order of their localization (spatial sequence).