bluuebunny/crossref_metadata_2025 huggingface dataset:
Sustainable Thermosets Obtained by Copolymerization of Humins with Triglycidyl Ether of Phloroglucinol
Authors: Dinu Roxana , Mija Alice
Published: April 2020

The environmental pollution is growing continuously - causing a worldwide problem. Production and use of petroleum-based materials but also huge quantities of industrial wastes are important factors that affect the well-being of the environment. New scientific researches place great emphasis on waste valorization, and also on developing new environmentally friendly bio-based materials. In this work we focus on the valorization of humins, a biorefinery side product, by its copolymerization with a bio-based triepoxide. In this manner we produce materials with a very high bio-based carbon content (BCC) » 94%. The physico-chemical and mechanical properties of the cured bio-based resins were investigated using different technics as TGA, DMA, Shore hardness test, water absorption and solvents resistance. It was revealed that the obtained materials present very good mechanical properties with values of E’ in glassy region » 3.7–5 GPa. The tan δ – maxima of the three humins-based resins are ranging from 122 to 154 °C. The thermosets’ hardness values » 82–85 SD confirm the stiffness of these materials.
De strafbare voortzetting van de werkzaamheid van een verboden organisatie in artikel 140 lid 2 Sr nader beschouwd
Authors: Kesteloo A.N. (André)
Published: April 2020

De strafbare voortzetting van de werkzaamheid van een verboden organisatie in artikel 140 lid 2 Sr nader beschouwd

Dit artikel gaat over de strafbaarstelling in artikel 140 lid 2 Sr en de uitleg van het bestanddeel ‘de voortzetting van de werkzaamheid van een verboden organisatie’ in het licht van de wetsgeschiedenis, recente opvattingen in de literatuur en aankomende wetgeving
Zorgen om zeden
Authors: Smeets S.F.J. (Sidney)
Published: April 2020

Zorgen om zeden

Tegen de achtergrond van de reeds aangekondigde integrale herziening en modernisering van de zedenmisdrijven in het Wetboek van Strafrecht en in relatie tot recente en in voorbereiding zijnde strafbaarstellingen op zedengebied brengt de auteur in deze bijdrage een aantal ‘zorgen om zeden’ voor het voetlicht. De auteur wil de wetgever daarmee handvatten aanreiken om de zedentitel inhoudelijk en systematisch tot een helder en werkbaar geheel om te vormen
Preoperative treatment with botulinum toxin A: a tool for giant groin hernia repair? Case report
Authors: Avellana Rocio , Peña Maria Jesus , Saez Patricia , Cabeza Juan , Torres Antonio
Published: April 2020

Introduction: Giant groin hernia is an unusual disease nowadays and its management can be a challenge for surgeons. The application of botulinum toxin A as a preoperative therapy could decrease the thickness of the lateral wall muscles, increase their length and increase the volume of the abdominal cavity facilitating the surgical repair. Morbidity and mortality due to high intra-abdominal pressure would decrease, allowing a minimal tension closure after reduction of the herniated viscera.
Case report: We present the repair of two cases of massive inguinal hernia with loss of domain using preoperative abdominal wall injection of botulinum toxin.
INVESTIGATION OF CHANGES IN THE MODULUS
OF ELASTICITY OF THE SURFACE LAYER MATERIAL DURING
FRETTING WEAR
Authors: BEZJAZYCHNYI Vyacheslav F. , SZCZEREK Marian , LYUBIMOV Roman V.
Published: April 2020

The method, the equipment used, and the results of the study are described in relation to the regularity of
changes in the modulus of elasticity of the part material surface layer during operation when the part is under
conditions of fretting wear of the contacting surfaces. Recommendations for the practical use of the research
results are given.
A SIMPLIFIED WAY OF ESTIMATING A DYNAMIC LOAD RATING FOR THRUST ROLLER BEARINGS
Authors: LIBERA Michał
Published: April 2020

The method of calculating the bearing capacity of rolling bearings is described in the ISO 281 standard. The calculation procedure for roller thrust bearings presented there, depending on the value of the nominal bearing angle, requires the selection of one of two formulas. Then, using the table, one reads the value of the factor depending on the geometry of the bearing components. To facilitate and speed up calculations (and perhaps also increase their accuracy), this article proposes a formula that is adapted to numerical applications, replaces linear interpolation with a proper non-linear function and allows calculations to be made for a specific value of the nominal bearing angle, but not within the range of 15°. The difference between the values calculated according to the proposed formula and the value calculated according to ISO 281 is, on average, around 3%.
ON THE TRIBOLOGICAL
PROPERTIES OF POLYLACTIDE (PLA) APPLIED IN 3D PRINTING
TECHNOLOGY
Authors: PAWLAK Wojciech , KOWALEWSKI Piotr , PRZEKOP Robert
Published: April 2020

The article presents the results of basic tribological research of polylactide enriched with MoS2 powder. The
research was conducted on a pin-on-disc station. Samples dimensions: 8 mm height, 8 mm diameter, printed
in FFF/FDM method. Two mass percentages of addition were created: 1% and 2.5%. As counter-specimen
steel (C45) disc was used. Ra roughness of counter-specimen was in the range of 0.3–0.4. The main purpose is
to determine optimal, in the light of tribological properties, mass percentage values of additions in polylactide
in the 3D printing application. The research has shown that materials with more MoS2 addition would not be
a good material for use in the production of prototype bearings, due to increased linear wear. It is also worth
noting that the MoS2 addition improves material properties in terms of the 3D printing process. Thanks to the
addition, even up to 1%, the required temperature of the printing nozzle has been significantly reduced, as well
as flow resistance in the nozzle.
Fitting a Square Peg in a Round Hole: A Simple Case of Chest Pain
Authors: McLean Mary , Beck-Esmay Jennifer
Published: April 2020

A 39-year-old female presents to the emergency department with chest pain and shortness of breath. Her electrocardiogram suggests ST-elevation myocardial infarction, but she has no atherosclerotic risk factors. She is gravida 4, para 4, and four weeks postpartum from uncomplicated vaginal delivery. She is diaphoretic and anxious, but otherwise her exam is unremarkable. Cardiac enzymes are markedly elevated and point-of-care echocardiogram shows inferolateral hypokinesis and ejection fraction of 50%. In this clinicopathological case, we explore a classically underappreciated cause of acute coronary syndrome in healthy young women.
“Trabalhar pra quê?” O significado e o sentido do trabalho para os bancários
Authors: Bertosso Henrique , Ebert Paula , Bonemberger Angela Maria Ortolan , Centenaro Andressa , Severo Eliana Andréa
Published: April 2020

The work of the banking sector has been affected by several transformations, especially by the insertion of the technological equipment in the agencies and integrated information systems, to control the time, the work and the productivity of the bankers. In this context, the purpose of this study is to understand the meaning and meaning of the work for bankers. The research characterized by the quantitative method, and the data collection was carried out through a survey applied to 65 bankers, who answered a questionnaire with closed questions. Data were analyzed using descriptive statistics techniques (mean and standard deviation) and factorial analysis. The main meanings pointed out by the bankers are that the work is something that allows the improvement, that adds value to life, as well as offers a contribution to the community. In this sense, work means a set of relevant activities to meet professional needs, personal values and contribute to society. It was found that the main factors that give meaning to the work in the banking sector is the guarantee of a quiet future, respect in the work environment, transparency and, its influence and social utility in what comprises justice and equality, corresponding to the desires Interests of the worker.
Intenção de uso dos serviços de autoatendimento em telefonia celular
Authors: Costa Tito Mendes da , Ferreira Jorge Brantes , Freitas Angilberto Sabino de , Rodrigues Juliana Werneck , Ramos Fernanda Leão
Published: April 2020

The aim of this study is to propose a model to evaluate consumers’ intention of adopting a new type customer service technology, self-service customer services (SSCS), analyzing the effects that consumers’ cognitive and affective perceptions about technology along with their communication with peers in social media have on their intention to adopt services of this nature. An online questionnaire was made available over the Internet to a base of 830,000 customers of a large mobile telecom carrier, with 5,262 valid questionnaires being obtained in response. Through structural equation modeling, the assumptions of the model were tested and the results show evidence of the influence of cognitive, emotional and social aspects on the consumer intention to adopt self-service customer service technologies.
Coopetição na internacionalização das vinícolas gaúchas por meio das instituições formais
Authors: Monticelli Jefferson Marlon , Vasconcellos Silvio Luís de , Garrido Ivan Lapuente
Published: April 2020

This study analyses the coopetition strategy adopted by wineries in Southern Brazil with the support of local formal institutions to promote their internationalization. A multiple case study with 21 interviews with wineries and formal institutions of the industry was carried out. We used the discourse analysis based on the following categories: industry characterization, national and international markets, internationalization process, and institutional environment. The interpretations regarding the Integrated Sectorial Project (ISP) Wines of Brasil are shown. Despite its relevance, not all those involved have joined the project, because it promotes the internationalization unevenly through the competitive advantage while enhancing the differences between the wineries.  The main contributions are expanding the knowledge about coopetition by understanding the role of formal institutions and promoting the international competitiveness of firms in the wine industry.
Análise dos constructos comportamentais do empreendedorismo sustentável de estudantes universitários brasileiros
Authors: Paiva Luis Eduardo Brandão , Lima Tereza Cristina Batista de , Rebouças Silvia Maria Dias Pedro , Soares Rômulo Alves
Published: April 2020

Research on entrepreneurial intention stands out in the academic context and addresses several determinants related to the behavioral nature influencing entrepreneurship. Consequently, the following behavioral constructs were used for sustainable entrepreneurship: attitude towards self-employment; orientation towards sustainability; propensity to innovate; barriers and facilities for entrepreneurial activities; and entrepreneurs in the immediate family. This study aimed to analyze the influence of the behavioral constructs of sustainable entrepreneurship on the entrepreneurial intentions of university students. Based on a sample of 318 students enrolled on an administration course at the Federal University of Ceará, statistical techniques of data analysis were applied, namely factorial analysis, inferential statistics (t-test and Mann-Whitney test), logistic regression and Classification and Regression Trees (CART). Three hypotheses were constructed in this study based on the literature: (i) there is a positive influence between the orientation towards the sustainability of university students and their entrepreneurial intention, (ii) there is a positive influence between the propensity to innovate and the entrepreneurial intention of the university students, and (iii) having entrepreneurs in the immediate family contributes positively to the entrepreneurial intent of university students. It was noted that, in general, students most likely to have entrepreneurial intent are those most concerned with environmental issues, that are stimulating and original, and have immediate relatives that are entrepreneurs.
Crítica a transposição de ferramentas da administração privada para a administração pública: um debate sobre modernização na administração pública no Brasil
Authors: Lopes Fernando Dias
Published: April 2020

This article was built in an essay style, that is, it intentionally exposes the subject/object relationship, prioritizing content over form. Thus, the text does not present a traditional form of division, but reflections that will be guided by the questions: Does it make sense to directly transpose business management tools to public management? Is the public administration a field equivalent to the field of business management or are these differences substantial? In order to answer them, a reflection was made on the concept of modernization in public administration, the differences between public administration and business administration and, finally, starting from an analysis of government documents on modernization and reports of experiences on the incorporation of Business Management Tools, it was concluded that it is up to the field of public administration to build its notion of modernization and to forge its own management tools to make this modernization possible.
Assessment of service quality in the hotel industry: use of fuzzy hybrid methodologies
Authors: Stefano Nara Medianeira , Zattar Izabel Cristina , Casarotto Filho Nelson
Published: April 2020

Considering that, service quality is an abstract and elusive construct because of three characteristics of services: intangibility, heterogeneity, and inseparability of production and consumption. In that way, we define service quality as perceived by the customer. Thus for service providing organizations the interpretation of customer needs is critical. The good performance in services strengthens competitiveness and establish a relationship with the customer, consolidating the brand, communication with the market. In this context, study aimed to assess the services quality in large hotel located in Santa Catarina – Brazil, with participation of 187 guests. We used the SERVQUAL method to collect data on a questionnaire based dimensions of quality. To calculate the expected weights and perception was used FAHP (Fuzzy Analytic Hierarchy Process). As a result, these aspects are presented where the expectation of the guests regarding the service is greater than that found reality, allowing thus the company strategically align its future investments.
In search of retention: volunteers in a Brazilian NGO
Authors: Aquino Marcos Aurelio Gomes de , Cavalcante Carlos Eduardo , Caldas Patrícia Trindade , Mendes Josiete Da Silva
Published: April 2020

This study aims to analyse the motives that lead current and prospective volunteers to engage in volunteer activity at the Cidade Viva Foundation in the city of João Pessoa, state of Paraíba, Brazil. To that end, the model proposed by Cavalcante (2016) is employed to describe volunteers’ motivational profiles at different points in time: their prior expectations, at the moment when they join the organization, and when they quit. The methodology chosen includes descriptive research and analysis of data collected through questionnaire-based interviews with volunteers at the Cidade Viva Foundation using inferential statistics (Student’s t test and Bonferroni test -ANOVA). Among the most significant findings is the predominance of the altruistic profile, followed by the social justice profile, the learning profile, the affiliation profile, and the selfish profile, both in prior expectations and at the moment of joining. Similarly, the selfish profile was least common.
Comportamento disfuncional do consumidor e táticas dos funcionários de serviços
Authors: Antonio Paloma , Espartel Lélis Balestrin , Perin Marcelo Gattermann
Published: April 2020

Dysfunctional customer behavior has grown substantially and has inspired academic research. In this theoretical study, the authors point out that the promotion of the myth of customer sovereignty through the culture of customer orientation is considered to be one of the variables that trigger these behaviors. The frontline employee manages the interactions in services and seeks to serve clients, but within the limitations of the offers. The discrepancy between the customers’ desires and what he obtains causes disillusionment and potentially dysfunctional behavior. Through their experience, employees accumulate tacit knowledge that grounds their assessment of situations and their development of tactics. On the other hand, organizations do not consider the dysfunctional customer behavior nor the tacit knowledge that exists in the service team in their strategies and actions, eventually not making use of this knowledge that could mitigate such behaviors. This is a theoretical article aimed at opening space for the debate of the dysfunctional customer behavior and service employees’ tactics through a theoretical composition that supports propositions and a conceptual model, as well as the suggestion of a future empirical test.
O papel do transbordo de carga na relação entre roteirização e adição de valor
Authors: Dias Edilson Ramos , Moori Roberto Giro , Morais Roberto Ramos de , Vitorino Filho Valdir Antonio
Published: April 2020

The aim of this article was to verify the impact of cargo transshipment on the relationship between routing and value addition of companies specialized in the road transport of long steels for civil construction. Cargo transshipment is a process of loading and unloading, fractional of products, that consumes time, causes disruption to the industrial activities, commercial and mainly, generates costs inadequately. Considering this context, a research of an exploratory nature of the quantitative type was carried out, in which a sample of 74 transport companies, linked to the steel and independent mills, were used. The collected data, treated by modeling in structural equations using the Partial Least Squares – Path Modeling (PLS-PM), revealed that the transshipment, partially, mediates the relationship between routing and value addition. From this result, it was evidenced that transport managers still need to evolve in the processes of cargo transshipments, through managerial training and elaboration of solutions, involving loading and unloading of products, which are vital for the addition of logistic value to the construction industry.
With Reason: A Portrait of Sophia Kovalevsky (1850–1891)
Authors: Growney JoAnne
Published: April 2020

Sophia Kovalevsky's story
A construção da inteligência emocional de mulheres encarceradas na cidade do Recife
Authors: Silva Leão Maria Sandra Montenegro , Freire Silvana Cristina , Do Nascimento Sebastiana Célia
Published: April 2020

Trata-se de uma pesquisa qualitativa descritiva e exploratória realizada em uma penitenciária feminina do Recife. O objetivo foi compreender se a educação ofertada através da modalidade EJA possibilitava a construção da inteligência emocional nas mulheres encarceradas.  Os materiais e métodos foram a observação e entrevistas para tecer uma compreensão através das falas das participantes da pesquisa. A pesquisa contou com seis participantes. Os dados foram analisados conforme a técnica de Análise de Conteúdo. Os resultados obtidos demonstram que a educação vivenciada no ambiente prisional colaborou para a melhora de três características da inteligência emocional: empatia, auto-estima e controle de impulsividade. Apreendeu-se que para as entrevistadas o estudo é importante porque ameniza o sofrimento, minimiza a solidão e ensina a tornar-se uma pessoa melhor.
Bombeando vida: estímulo da criatividade de pessoas com deficiência intelectual
Authors: Rogoni Tatiellen Roberta , Fonseca Annelise Nani
Published: April 2020

O seguinte artigo é fruto de um recorte do Trabalho de Conclusão de Curso, apresentado na Universidade Estadual de Maringá no curso de Artes Visuais em 2016. Neste objetivou-se investigar produções artísticas de modo a desenvolver propostas que estimulassem a criatividade e ampliassem o repertório artístico de pessoas com deficiência intelectual. Tal pesquisa foi desenvolvida junto aos alunos participantes de um projeto de extensão para Pessoas com Necessidades Especiais, vinculado a Universidade Estadual de Maringá (UEM). Cabe salientar que a metodologia utilizada foi a Abordagem Triangular de Ana Mae Barbosa (1998), por meio da elaboração das aulas que preconizou seus três vértices. Além disso, foi realizada a análise dos desenhos elaborados pelos alunos do projeto. A partir da análise, notou-se a ocorrência de desenhos estereotipados, em virtude disso, pensou-se na problemática: como planejar aulas de arte para pessoas com deficiência intelectual que estimulem a criatividade e ampliem o repertório artístico? Por fim, foram apresentadas as aulas planejadas a partir da metodologia descrita, que tiveram como objetivo o estímulo à criação autoral. Em nossas considerações inferimos que a mediação docente e os recursos didáticos constituem papel primordial no processo de aprendizagem de pessoas com deficiência.
O desenho universal para aprendizagem como um princípio do cuidado
Authors: Böck Geisa Letícia Kempfer , Gesser Marivete , Nuernberg Adriano Henrique
Published: April 2020

Proporcionar práticas de ensino que contemplem a variação humana ainda é um grande desafio aos sistemas de ensino. Remover barreiras de acesso ao conhecimento sem eliminar os desafios necessários à aprendizagem torna-se imprescindível para a garantia da participação social de pessoas com deficiência nesse sistema. O objetivo que se tem com este artigo é o de apresentar o Desenho Universal para a Aprendizagem (DUA) como uma atitude de cuidado que pode contribuir para a efetivação de processos educativos inclusivos em todos os níveis de ensino. Para tanto, foi realizada uma revisão de literatura sobre o DUA dialogando-se com o campo dos Disabilities Studies in Education e com as teóricas da segunda geração do modelo social da deficiência, vislumbrando algumas intersecções entre esses campos teóricos. O estudo apontou que a organização do ensino na perspectiva do DUA, por remover as barreiras que se interpõem entre o sujeito e o conhecimento, pode ser caracterizada como uma estratégia de cuidado voltada à garantia do direito à educação a estudantes com e sem condições de deficiência. Dessa forma, pode-se caracterizar o DUA como uma estratégia política pautada no rompimento com currículos capacitistas, os quais homogeneízam e excluem as diferenças.
O ensino da arte como facilitador da aprendizagem de pessoas com deficiência intelectual numa escola da rede municipal de Belo Horizonte
Authors: Briskievicz Danilo Arnaldo , Costa Cibele Silva de Aquino , Souza Diego Norberto , Gonçalves Enderson de Carvalho , De Almeida Mariana Lopes , De Oliveira Leila Mara Siqueira
Published: April 2020

Investigamos as relações possíveis entre a estética e a educação a partir de um trabalho de campo desenvolvido no primeiro semestre de 2018, numa escola municipal do município de Belo Horizonte/MG, que atende alunos e alunas com deficiência intelectual com mais de dezoito anos. A partir de uma visita técnica ao estabelecimento, coletamos informações sobre a forma de dinamização das aulas e do processo ensino-aprendizagem através da arte [oficinas de teatro, de artesanato, de dança], alicerçada pela concepção sociointeracionista de Lev Vygotsky e por diagnósticos médicos precisos para um atendimento personalizado. A partir da observação do cotidiano da escola e de sua pedagogia centrada nas atividades artísticas e culturais percebemos uma importante contribuição para a educação inclusiva na região metropolitana de Belo Horizonte/MG. A metodologia usada foi o trabalho de campo baseado na observação do cotidiano escolar em suas diversas atividades, a pesquisa bibliográfica e a geração de relatório de pesquisa com entrevistas e fotografias das atividades. Os resultados da pesquisa e da imersão no universo desta escola demonstram que a estética e a educação podem se servir mutuamente uma da outra, com ganhos expressivos na qualidade do ensino e do aprendizado.
Entrevista com Karol Cordeiro: uma história de amor e luta pela inclusão através da arte
Authors: Inclusão Revista Educação, Artes e
Published: April 2020

Karolina Cordeiro é geógrafa de formação, doula por missão e escritora  por paixão. Mãe da Ana Júlia, do Pedro e da Giovana. Fundadora do Projeto Angel Hair (cultura, arte, educação e inclusão), que leva apresentações itinerantes em escolas públicas de dança inclusiva e palestras em várias cidades do Brasil. O Projeto nasceu depois que seu filho Pedro desenvolveu uma síndrome rara chamada Aicardi Goutieres. Ativista pelos direitos humanos. Facilitadora em desenvolvimento humano no Movimente Ateliê. Palestrante e colunista da revista Cult, articulista da Revista Reação (revista nacional de reabilitação) e colunista da revista Triângulo Esporte. Membro da Comissão em Defesa da Pessoa com Deficiência da OAB Minas, Diretora de Operações da AGS Síndromes da América do Sul. Corredora da Angel Hair Team. Cofundadora do Projeto Muda do Afeto (cartilha e livros sobre a pessoa com deficiência). Uma mulher e mãe que  transforma a experiência de ter um filho com deficiência em aprendizado e oportunidade de criar relações significativas e importantes para um mundo melhor.
Sentidos de ensino de música nas narrativas de docentes dos Anos Iniciais
Authors: Pales Isamar Marques Cândido , Souza Sandra Suely Oliveira , Pereira Sandra Márcia Campos , Eugenio Benedito
Published: April 2020

A música está presente em nosso cotidiano e desperta os mais diferentes sentimentos. Neste artigo, apresentamos os resultados de uma pesquisa que objetivou compreender as configurações subjetivas acerca da relação entre música e prática docente. Os dados apresentados neste artigo fazem parte de uma pesquisa sobre sentidos de música para pedagogas que atuam na docência dos anos iniciais do ensino fundamental no município de Vitória da Conquista-Ba. Empregamos a entrevista narrativa para a produção dos dados e a fenomenologia é o método de análise. Os dados foram organizados em categorias. Neste texto apresentamos duas dessas categorias: o ressoar da música no curso de Pedagogia; Configurações de sentido da música para as pedagogas. As conclusões apontam que o momento das narrativas oportunizou cada participante trazer o relato sobre a compreensão da música. O acesso ao material nos revelou vivências aproximadas e outras mais distantes no que tange à representatividade e ao sentido da música.
Diorama Sensorial Interdisciplinar: uma viagem com a expedição Beagle, de Charles Darwin
Authors: Carneiro Fernanda Maria Trentini , Boos Alessandra Daniele da Silva , Ferretti Vanessa Arlésia de Souza
Published: April 2020

O artigo apresenta um projeto interdisciplinar realizado com alunos dos primeiros anos dos cursos técnicos em química e informática do IFSC-Gaspar. A atividade objetivou a construção de dioramas sensoriais resultantes de uma pesquisa sobre a expedição Beagle, da qual participou Charles Darwin entre 1831 e 1836. Diorama é um tipo de maquete que apresenta de forma artística uma situação real, ou seja, uma representação tridimensional de uma cena. O diorama foi pensando como objeto sensorial de maneira a torná-lo acessível ao público geral e público de PcD, especificamente, pessoas com deficiência visual. Este trabalho envolveu as unidades curriculares de Artes, Biologia e Português e contou com o apoio da unidade curricular de História e do grupo de trabalho de materiais adaptados da instituição. Ao todo foram realizados vinte e dois dioramas relacionados a  vinte e duas localidades por onde Charles Darwin passou com a expedição. Os resultados apontam que o projeto interdisciplinar promove maior engajamento dos discentes com as práticas de pesquisa e de inclusão, bem como apropriação de conhecimentos de modo crítico e articulado às demandas sociais do tempo presente.
Dizem as paredes: a escola pública como espaço de disputa e negociação de vozes e silêncios
Authors: De Carvalho Marília Alves
Published: April 2020

Este estudo consiste em um relato da experiência como professora de artes na rede municipal da cidade de São Paulo e das proposições de intervenções artísticas realizadas com estudantes do ensino fundamental II, como forma de ocupar o espaço da escola com as vozes das e dos estudantes e observar as repercussões e desdobramentos dessas ações. Partindo do aporte teórico da Cultura Visual para investigar sobre as imagens e a visualidade do ambiente escolar como atuantes na formação da subjetividade das e dos estudantes, assim como seu cotidiano e a forma como as relações se estabelecem dentro desse espaço, também é intenção desse artigo debater o entendimento das imagens que ocupam a escola como escolhas pedagógicas que dão visibilidade para determinados artefatos visuais ao mesmo tempo em que invisibilizam outros, assim como a relevância que elas podem ter na formação da voz e do silêncio das e dos estudantes. As considerações finais pretendem apontar possibilidades de entendimento das práticas artísticas e imagéticas como espaço de aprendizagem e experimentação que deve ser reconhecida e valorizada no cotidiano escolar.
Nietzsche and Ecological Reason(s) in the Anthropocene
Authors: Jörg Kilian
Published: April 2020

Ecosophical discourses around the ecological condition that is sometimes referred to as the “Anthropocene” require a fundamental rethinking of key concepts of occidental philosophy, including reason. Nietzsche’s body of work offers manifold tools for the rethinking of reason, and this paper seeks to apply them to achieve a “new ecological image of thought.” It will demonstrate 1) how there is a clear ecological awareness motivating Nietzsche’s affirmative critique of reason, 2) how one can find rudiments of a pluralization of the concept of reason in Nietzsche's body of work, as well as 3) traces of a new, qualitatively different form of ecological reason for the time called the Anthropocene – with all its problems and possibilities. In doing so, this paper will demonstrate how Nietzsche can be very productively applied to contemporary eco-philosophical discussions.
An unusual 100-million-year old holometabolan larva with a piercing mouth cone
Authors: Haug Joachim T. , Schädel Mario , Baranov Viktor A. , Haug Carolin
Published: April 2020

Holometabola is a hyperdiverse group characterised by a strong morphological differentiation between early post-embryonic stages (= larvae) and adults. Adult forms of Holometabola, such as wasps, bees, beetles, butterflies, mosquitoes or flies, are strongly differentiated concerning their mouth parts. The larvae most often seem to retain rather plesiomorphic-appearing cutting-grinding mouth parts. Here we report a new unusual larva preserved in Burmese amber. Its mouth parts appear beak-like, forming a distinct piercing mouth cone. Such a morphology is extremely rare among larval forms, restricted to those of some beetles and lacewings. The mouth parts of the new fossil are forward oriented (prognathous). Additionally, the larva has distinct subdivisions of tergites and sternites into several sclerites. Also, the abdomen segments bear prominent protrusions. We discuss this unusual combination of characters in comparison to the many different types of holometabolan larvae. The here reported larva is a new addition to the ‘unusual zoo’ of the Cretaceous fauna including numerous, very unusual appearing forms that have gone extinct at the Cretaceous–Palaeogene boundary.
Pre-harvest Fruit Bagging Enhanced Quality and Shelf-life of Mango (Mangifera indica L.) cv. Amrapali
Authors: Akter M. M. , Islam M. T. , Akter N. , Amin M. F. , Bari M. A. , Uddin M. S.
Published: April 2020

A study was performed during 2016 from January to July for safe mango production by applying the minimum use of pesticides. The mango fruits were bagged at marble stage (45 days after fruit set) with various treatments viz: T0: No bagging (control), T1: Brown paper double-layered bag (BPB); T2: White paper single-layered bag (WPB); T3: Perforated polythene bag (PB) and T4: White cloth bag (WCB). In physical parameters, brown and white paper bag recorded the maximum fruit weight (169.10 g and 147.6 g), fruit length (8.57 and 8.33 cm), fruit diameter (5.63 and 5.87 cm) and pulp weight (124.47 g and 105.60 g) respectively, while minimum result was found in the other treatments and control. Meanwhile, in bagging fruits, chemical parameters of total soluble solids, ascorbic acid, percent of citric acid, reducing sugars and β- carotene were increased over control. Brown paper bag changed fruit color. The sensory qualities in fruits of brown and white paper bags were improved over control. Fruit retention was significantly improved by pre-harvest fruit bagging with a brown paper bag (95.90%), white paper bag (95.50%), and control (90.00%) over polythene bag (80.00%). Fruits with brown paper bags showed shelf life up to 18 days with good physical quality and the lowest weight loss against 15 days of control fruits. The sensory attributes were better in fruits of brown, white paper and white cloth bags over control. Bagging at marble stage also reduced the occurrence of spongy tissue and the incidence of mealy bugs. These results indicate that fruit bagging can improve the quality and the shelf life of mango cv. Amrapali through the reduction of disease and insect-pest attack.
On the Hyper-Zagreb Index of Some Graph Binary Operations
Authors: Al-Sharafi Mohammed Saad Yahya , Shubatah Mahioub Mohammed
Published: April 2020

This study looked at Graph theory as it is an important part of mathematics. Topological indices are numerical parameters of a graph which describe its structure, they have many applications as tools for modeling chemical and other properties of molecules. In this paper, we presented some exact formulas of the Hyper-Zagreb index for some special graphs and some graph binary operations such disjunction G v H, symmetric difference G H, and tensor product G H of graphs.
Students’ Motivation towards Science Learning (SMTSL) - An Intervention with Video and Quizzes
Authors: Spandana B. , Rani R. Neela , Devi S. Suchiritha
Published: April 2020

Science, as a subject is universal and knows no boundaries. The claims of Science for inclusion in the school curriculum came to be recognized after years of active and persistent efforts. Many students find science extremely inspiring and interesting, however when amply motivated. Pre-test and post-test experimental research design, was adopted for the study. A sample of 219, 8th class students (169 female, 50 male students) from six Ashram high schools of Warangal district was selected. Students' Motivation Towards Science Learning (SMTSL) (Tuan et al. [1]) scale was adopted in this study. The sum of SMTSL hiked to 87.38% from 73.28% in post-test. This increase was attributed to the intervention through tutoring students with video lessons and evaluating with quizzes before and after screening video lessons. The variable Performance goal, contributed to the maximum (33.62%). A shift in students from moderately motivated category to highly motivated category was also found in post intervention situation.
Distance to OTPs in hard‐hit regions makes case for pharmacy‐based service
Authors: Enos Gary
Published: April 2020

Many individuals who would be good candidates for methadone treatment for opioid use disorder (OUD) live closer to a chain pharmacy than to an opioid treatment program (OTP), and that holds true in urban as well as rural communities. A newly published study focusing on five states hit hard by the opioid overdose crisis suggests that pharmacy‐based methadone dispensing would make a major difference in improving access to the evidence‐based OUD treatment.
Metabolic Labeling to Probe the Spatiotemporal Accumulation of Matrix at the Chondrocyte–Hydrogel Interface
Authors: Loebel Claudia , Kwon Mi Y. , Wang Chao , Han Lin , Mauck Robert L. , Burdick Jason A.
Published: April 2020

Hydrogels are engineered with biochemical and biophysical signals to recreate aspects of the native microenvironment and to control cellular functions such as differentiation and matrix deposition. This deposited matrix accumulates within the pericellular space and likely affects the interactions between encapsulated cells and the engineered hydrogel; however, there has been little work to study the spatiotemporal evolution of matrix at this interface. To address this, metabolic labeling is employed to visualize the temporal and spatial positioning of nascent proteins and proteoglycans deposited by chondrocytes. Within covalently crosslinked hyaluronic acid hydrogels, chondrocytes deposit nascent proteins and proteoglycans in the pericellular space within 1 d after encapsulation. The accumulation of this matrix, as measured by an increase in matrix thickness during culture, depends on the initial hydrogel crosslink density with decreased thicknesses for more crosslinked hydrogels. Encapsulated fluorescent beads are used to monitor the hydrogel location and indicate that the emerging nascent matrix physically displaces the hydrogel from the cell membrane with extended culture. These findings suggest that secreted matrix increasingly masks the presentation of engineered hydrogel cues and may have implications for the design of hydrogels in tissue engineering and regenerative medicine.
Tunable Diffraction Gratings from Biosourced Lyotropic Liquid Crystals
Authors: Cao Yuanyuan , Wang Pei‐Xi , D'Acierno Francesco , Hamad Wadood Y. , Michal Carl A. , MacLachlan Mark J.
Published: April 2020

Diffraction gratings are important for modern optical components, such as optical multiplexers and signal processors. Although liquid crystal (LC) gratings based on thermotropic LCs have been extensively explored, they often require expensive molecules and complicated manufacturing processes. Lyotropic LCs, which can be broadly obtained from both synthetic and natural sources, have not yet been applied in optical gratings. Herein, a facile grating fabrication method using a biosourced lyotropic LC formed by cellulose nanocrystals (CNCs), a material extracted from plants, is reported. Hydrogel sheets with vertically aligned uniform periodic structures are obtained by fixing the highly oriented chiral nematic LC of CNCs in polymer networks under the cooperative effects of gravity on phase separation and a magnetic field on LC orientation. The hydrogel generates up to sixth‐order diffraction spots and shows linear polarization selectivity, with tunable grating periodicity controlled through LC concentration regulation. This synthesis strategy can be broadly applied to various grating materials and opens up a new area of optical materials from lyotropic LCs.
[3+2] Cycloaddition of Trifluoromethylated N‐Acylhydrazones with Azomethine Ylides: Synthesis of Trifluoromethylated Imidazolidines
Authors: Zhao Fangxia , Wang Ke‐Hu , Wen Lan , Zhao Zhuanxia , Hu Yongqin , Xu Weigang , Huang Danfeng , Su Yingpeng , Wang Junjiao , Hu Yulai
Published: April 2020

Trifluoromethylated N‐acylhydrazones are used as dipolarophiles to perform 1,3‐dipolar cycloadditions with azomethine ylides to afford trifluoromethylated 1,2,4,5‐tetrasubstituted imidazolidines in good yields under mild conditions. The role switch of the trifluoromethylated N‐acylhydrazones demonstrates that they are versatile trifluoromethyl building blocks for CF3‐containing heterocycles.
Interleukin‐17A Is Produced by CD4+ but Not CD8+ T Cells in Synovial Fluid Following T Cell Receptor Activation and Regulates Different Inflammatory Mediators Compared to Tumor Necrosis Factor in a Model of Psoriatic Arthritis Synovitis
Authors: Xu Xiaofei , Davelaar Nadine , Mus Anne‐Marie , Asmawidjaja Patrick S. , Hazes Johanna M. W. , Baeten Dominique L. P. , Vis Marijn , Bisoendial Radjesh J. , Prens Errol P. , Lubberts Erik
Published: April 2020

Objective

Interleukin‐17A (IL‐17A) and tumor necrosis factor (TNF) contribute to the pathogenesis of psoriatic arthritis (PsA). However, their functional relationship in PsA synovitis has not been fully elucidated. Additionally, although CD8+ T cells in PsA have been recognized via flow cytometry as a source of IL‐17A production, it is not clear whether CD8+ T cells secrete IL‐17A under more physiologically relevant conditions in the context from PsA synovitis. This study was undertaken to clarify the roles of IL‐17A and TNF in the synovial fluid (SF) from patients with PsA and investigate the impact of CD8+ T cells on IL‐17A production.

Methods

IL‐17A+ T cells were identified by flow cytometry in SF samples from 20 patients with active PsA, blood samples from 22 treatment‐naive patients with PsA, and blood samples from 22 healthy donors. IL‐17A+ T cells were sorted from 12 PsA SF samples and stimulated using anti‐CD3/anti‐CD28 or phorbol myristate acetate (PMA) and ionomycin ex vivo, alone (n = 3) or together with autologous monocytes (n = 3) or PsA fibroblast‐like synoviocytes (FLS) (n = 5–6). To evaluate the differential allogeneic effects of neutralizing IL‐17A and TNF, SF CD4+ T cells and PsA FLS cocultures were also used (n = 5–6).

Results

Flow cytometry analyses of SF samples from patients with PsA showed IL‐17A positivity for CD4+ and CD8+ T cells (IL‐17A, median 0.71% [interquartile range 0.35–1.50%] in CD4+ cells; median 0.44% [interquartile range 0.17–1.86%] in CD8+ T cells).

However, only CD4+ T cells secreted IL‐17A after anti‐CD3/anti‐CD28 activation, when cultured alone and in cocultures with PsA monocytes or PsA FLS (each P < 0.05). Remarkably, CD8+ T cells only secreted IL‐17A after 4‐ or 72‐hour stimulation with PMA/ionomycin. Anti–IL‐17A and anti‐TNF treatments both inhibited PsA synovitis ex vivo. Neutralizing IL‐17A strongly inhibited IL‐6 (P < 0.05) and IL‐1β (P < 0.01), while anti‐TNF treatment was more potent in reducing matrix metalloproteinase 3 (MMP‐3) (P < 0.05) and MMP‐13.

Conclusion

CD8+ T cells, in contrast to CD4+ T cells, in SF specimens obtained from PsA patients did not secrete IL‐17A following T cell receptor activation. Overlapping, but distinct, effects at the level of inflammatory cytokines and MMPs were found after neutralizing IL‐17A or TNF ex vivo in a human model of PsA synovitis.
Results from a randomized controlled trial testing StressProffen; an application‐based stress‐management intervention for cancer survivors
Authors: Børøsund Elin , Ehlers Shawna L. , Varsi Cecilie , Clark Matthew M. , Andrykowski Michael A. , Cvancarova Milada , Solberg Nes Lise
Published: April 2020

Background

In‐person cognitive‐behavioral stress‐management interventions are consistently associated with reduced cancer distress. However, face‐to‐face delivery is an access barrier for many patients, and there is a need to develop remote‐delivered interventions. The current study evaluated the preliminary efficacy of an application (app)‐based cancer stress‐management intervention, StressProffen, in a randomized controlled trial.

Methods

Cancer survivors, maximum 1‐year posttreatment (N = 172), were randomized to StressProffen (n = 84) or a usual care control group (n = 88). Participants received a blended delivery care model: (a) one face‐to‐face introduction session, (b) 10 app‐based cognitive‐behavioral stress‐management modules, and (c) follow‐up phone calls at weeks 2‐3 and 6‐7. Outcome measures included stress (Perceived Stress Scale), anxiety and depression (Hospital Anxiety Depression Scale), and health‐related quality of life (HRQoL; Short‐Form Health Surveys [SF‐36]) at 3‐months post‐intervention, analyzed with change scores as dependent variables in linear regression models.

Results

Participants were primarily women (82%), aged 20‐78 years (mean 52, SD 11.2), with mixed cancer types (majority breast cancer; 48%). Analysis of 149 participants completing questionnaires at baseline and 3 months revealed significant intervention effects: decreased stress (mean difference [MD] −2.8; 95% confidence interval [CI], [−5.2 to −0.4]; P = .022) and improved HRQoL (Role Physical MD = 17.7, [CI 3.7‐31.3], P = .013; Social Functioning MD = 8.5, [CI 0.7‐16.2], P = .034; Role Emotional MD = 19.5, [CI 3.7‐35.2], P = .016; Mental Health MD = 6.7, [CI 1.7‐11.6], P = .009). No significant changes were observed for anxiety or depression.

Conclusions

Digital‐based cancer stress‐management interventions, such as StressProffen, have the potential to provide easily accessible, effective psychosocial support for cancer survivors.
Blockchain applications beyond the cryptocurrency casino: The Punishment not Reward blockchain architecture
Authors: Banach Richard
Published: April 2020

The Bitcoin model originated blockchain architectures and inspired their further development. Blockchain architectures are still most commonly associated with currency applications, and with financial speculation. Bitcoin's rewards forProof of Workmining became the default consensus technique for blockchains. As an alternative torewardmechanisms for blockchain maintenance, we proposepunishmentmechanisms for neglecting to maintain the blockchain (provided participants are intrinsically motivated to be beneficiaries of the blockchain application). Punishment not Reward is convincing for enterprise mission critical blockchain applications, and potential punishment mechanisms includedenial of serviceand/orrevocation of confidentiality. This obviates the need for reward via cryptocurrencies, along with their attendant volatility, insecure ecosystem, and market manipulation demerits. The privacy concerns of competing entities participating in a blockchain application areprima faciein conflict with the needs of the community to be able to inflict punishment mechanisms. Conflicts of this kind can be addressed via sophisticated cryptographic techniques such as secret sharing, multiparty computation, zero‐knowledge proofs, and so on, which play a vital role. We stress the importance of correctly balancing allapplication specificinterests in the engineering of blockchain applications, so that the mix of incentives and disincentives is stabilizing.
Dopant Occupancy and UV–Vis–NIR Spectroscopy of Sc:Yb:Tm:LiNbO3 in the 300–3000 nm Wavelength Range
Authors: Dai Li , Wang Yuning , Chen Ruirun , Yang Shunxiang , Han Xianbo , Liu Chunrui , Shao Yu
Published: April 2020

A series of Sc:Yb:Tm:LiNbO3 crystals with variable Sc3+ (0, 1, 2, and 3 mol%) concentration are grown by the Czochralski method. The effective distribution coefficients of Sc3+, Yb3+, and Tm3+ ions in the Sc:Yb:Tm:LiNbO3 crystals are determined by inductively coupled plasma atomic emission spectrometer. Sc3+ ions distribute uniformly in crystals when Sc3+ concentration reaches up to 3 mol%. The influence of Sc3+ concentration on the dopant occupancy and defect structure of Sc:Yb:Tm:LiNbO3 crystals is investigated by IR transmission spectra. Threshold concentration of Sc3+ ions in Sc:Yb:Tm:LiNbO3 crystals is nearly 3 mol%. By analyzing UV–vis–NIR absorption spectra, absorption property of Sc:Yb:Tm:LiNbO3 crystals is improved by doping Sc3+ ions. Additionally, the Sc:Yb:Tm:LiNbO3 crystals can be pumped by commercially available high power AlGaAs LDs.