bluuebunny/crossref_metadata_2025 huggingface dataset:
Ancestralidade e produção de saúde na comunidade indígena Xokós, Sergipe
Authors: Santos Rodrigo Cardoso dos , Santos Ricardo Cardoso dos
Published: July 2020

O presente artigo advém de uma vivência realizada por uma turma do Curso de Aperfeiçoamento em Educação Popular em Saúde (EdpopSUS) do município de Lagarto-SE, com a comunidade indígena Xokós, alocada na terra Caiçara, às margens do Rio São Francisco, em Porto da Folha-SE. Objetiva relatar a vivência dos educandos do curso com a comunidade enquanto proposta de diálogo intercultural para a construção de saberes e a valorização dos modos de vida tradicionais. Para tanto, está centralizado na problematização dessa vivência, por meio do olhar da decolonialidade e da interculturalidade propostas pela Educação Popular em Saúde no encontro com a história e ancestralidade, trabalho e cultura, e modos de vida e produção de saúde, elementos vistos enquanto potentes expressões ancestrais do povo Xokó. Dessa forma, o diálogo proposto reafirma a vida e história desse povo ao passo em que se propõe a reorientar as práticas de saúde dos educandos do EdpopSUS.
Serviço social, educação popular e saúde
Authors: Costa Laila Talita da Conceição , Santos José Whellison Brito dos
Published: July 2020

O presente artigo aborda as perspectivas e potencialidades da interlocução entre educação popular e o trabalho profissional dos/as assistentes sociais na política de saúde. Para empreender a análise, fundamentando-se no materialismo-histórico, realizou-se uma pesquisa de cunho bibliográfico, a qual também se intercruzou dados documentais a respeito do trabalho dos/as assistentes sociais no Sistema Único de Saúde (SUS). Apresenta-se, após um breve resgate histórico-analítico da interlocução entre o Serviço Social brasileiro, educação popular e saúde, desafios centrais no desenvolvimento do caráter educativo do trabalho do/a assistente social na política de saúde contemporaneamente. Concluindo-se com a necessidade do fortalecimento da educação popular no interior do Serviço Social brasileiro no antagonismo às perspectivas neoconservadoras em disputa na profissão.
Investigando concepções de educação em saúde de estudantes universitários de Ciências Biológicas relacionadas ao controle do Aedes aegypti
Authors: Pimentel Andréia Guerra , Gomes Suzete Araujo Oliveira , Morel Ana Paula Massadar , Alves Gutemberg Gomes , Spiegel Carolina Nascimento
Published: July 2020

Estratégias tradicionais, baseadas em inseticidas e comportamentos individuais, não têm se mostrado suficientes no controle de doenças relacionadas ao Aedes aegypti. Reflexões da Educação Popular em Saúde que ultrapassem aspectos biomédicos e englobem fatores sociais, econômicos e políticos devem ser consideradas no controle e estar presentes na formação de profissionais da área. Neste trabalho foram investigadas as concepções de educação em saúde de alunos de Ciências Biológicas de duas universidades públicas, no início e no final da graduação, por meio de questionários sobre estratégias para controlar doenças transmitidas pelo vetor e sobre o papel do professor de Ciências/Biologia na promoção da saúde. Prevaleceram respostas incluindo a educação sanitária e a valorização de medidas de monitoramento, conscientização e prevenção contra criadouros do mosquito. Poucas respostas incluíram noções de educação popular na demanda por transformações na sociedade e a garantia de direitos como saneamento básico, meio ambiente equilibrado e serviços de saúde. Predominou a visão do professor como transmissor de conhecimentos e não como motivador de diálogos articulando a questão da dengue com os determinantes sociais da saúde. O enfoque na educação sanitária na concepção dos alunos faz refletir sobre a necessidade de maiores aprofundamentos sobre educação popular na formação de biólogos.
O processo de formação para a prática de educação popular em saúde
Authors: Silva Flávia Maraísa de Paiva , Pereira Andrezza Karine Araújo de Medeiros
Published: July 2020

Este estudo objetiva analisar como o processo de formação ofertado pelo curso de Enfermagem do campus avançado “Profª Maria Elisa Albuquerque Maia” da Universidade do Estado do Rio Grande do Norte, contribuiu para a atuação do enfermeiro no campo da Educação Popular em Saúde, a partir das concepções dos egressos. Trata-se de uma pesquisa do tipo descritivo-exploratória, na qual para a coleta de dados fez-se uso de análise documental, aplicação de questionário semiestrururado online enviado via e-mail e realização de grupos focais, de forma que foram investigados 35 profissionais. Os resultados apontam que a formação do curso de enfermagem propõe discussões e práticas de educação em saúde de forma enfática. Porém, foi perceptível que alguns egressos ainda apresentam uma concepção de educação em saúde norteada pela concepção tradicional e ainda equivocadamente associando-a como sinônimo de Educação Permanente. Observou-se, portanto, que mesmo inseridos em um curso cujo Projeto Político Pedagógico valoriza e vivencia a educação em saúde orientada pelo compartilhamento de saberes e que oportuniza vivências de EPS em seus estágios curriculares, alguns egressos não conseguiram construir essa concepção teórica pela ótica da EPS, sendo orientados, ainda, pela concepção tradicional de educação em saúde.
Os processos de produção de conhecimentos e pesquisa na educação popular e saúde
Authors: Acioli Sonia , Pedrosa José Ivo dos Santos
Published: July 2020

Nessa reflexão defendemos um modo de pensar e fazer a prática pedagógica situado na luta histórica contra as várias formas de opressão e o não reconhecimento dos diversos saberes, em especial, os saberes populares e tradicionais. E, a identificação de caminhos possíveis na articulação entre práticas pedagógicas na perspectiva da educação popular e saúde (EPS) e processos de produção de conhecimentos e pesquisa que considerem os vários olhares e sentidos presentes e seu compromisso com as lutas por um bem viver. Por isso, para além de falarmos de métodos e metodologias, reconhecemos a necessidade de articular nossas práticas pedagógicas e políticas de EPS a práticas de pesquisa que fortaleçam a EPS como campo de ação e luta, mas também como campo de reflexão e produção de conhecimentos.
O Enem como instrumento de autoavaliação: um projeto não efetivado / MEC's proposal for Enem to trigger a self-assessment: a project not carried out
Authors: Almeida Vitor Sergio
Published: July 2020

O objetivo central visa refletir se a proposta de autoavaliação (olhar para si) feita por meio do Exame Nacional do Ensino Médio (Enem) encontra ressonância com a realidade dos discentes. Apega-se ao enfoque documental e bibliográfico, tendo como cerne os trabalhos de Zanchet (2003), Locco (2005), Almeida (2019) e documentos relativos ao Enem. Dentre os achados, nota-se que não há uma política curricular difundida pelo governo a fim de embasar o professor e o aluno acerca da disseminação da autoanálise. Tal prática, aliada ao referido exame, é conduzida (quando existe condução) de modo acrítico. Constata-se também que a autoavaliação necessita de um contexto mais humanizado e pessoal, ao contrário do cenário competitivo e meritocrático desencadeado por outras atribuições do Enem.
A avaliação externa na perspectiva de docentes do ensino fundamental em uma escola municipal do interior paulista / External evaluation from the perspective of elementary school teachers in a county school in the in land of São Paulo State
Authors: Rubio Katia Eleotério , Mendes Geisa do Socorro Cavalcanti Vaz
Published: July 2020

Apresenta-se um recorte de pesquisa qualitativa em que se buscou compreender a avaliação externa na perspectiva de docentes do 1º ao 5º ano e sua influência no trabalho pedagógico em uma escola municipal paulista. Recorreu-se ao estudo documental, à legislação e à entrevista semiestruturada. Pesquisou-se os dados da rede municipal disponibilizados pelo Inep (2009 a 2017). Identificaram-se influências da política de avaliação externa na prática pedagógica, configuradas nas categorias: responsabilização vertical; busca por melhores resultados da escola/professores por meio de simulados e de treinamento das crianças; e o estreitamento curricular para atender o que se avalia (mede) nas avaliações externas.
Programa de avaliação seriada da Universidade de Brasília: lições para a avaliação do ensino médio / Serial evaluation program from the University of Brasília: lessons towards the high school’s evaluation
Authors: Kunz Sidelmar Alves da Silva Kunz , Castioni Remi , Araújo Gilvan Charles Cerqueira de Araújo
Published: July 2020

O objetivo desse artigo é abordar a trajetória histórica da experiência do Programa de Avaliação Seriada da Universidade de Brasília (PAS) e as suas contribuições para a avaliação do ensino médio no Distrito Federal. A partir das análises teóricas, bibliográficas e documentais, assinalamos que, por meio da compreensão das parametrizações avaliativas de tendência global e o histórico de construção do PAS, é possível detectar um inventário de elementos que o tornam referência para a entrada no Ensino Superior no país, assim como se apresenta como inovação no tocante às aberturas e às possibilidades para seu aperfeiçoamento e aprimoramento como sistema de avaliação, acompanhando o percurso de aprendizagem dos estudantes ao longo de seu percurso de escolarização no ensino médio.
O Regime Noturno da Imagem na Poesia de Antero de Quental
Authors: Almeida de souza Ayanne Larissa
Published: July 2020

Este trabalho investiga a poesia portuguesa, analisando o simbolismo do regime noturno da imagem, tomando como pressuposto a estrutura do imaginário de Gilbert Durand. Buscamos analisar, a partir de um estudo sobre a poesia de Antero de Quental, de que modo o regime imagético noturno emerge enquanto símbolo do não-ser, da eternidade, da vida como termo disfórico/negativo, enquanto a morte surge como termo eufórico/positivo. Dialogaremos com as filosofias de Friedrich Nietzsche - no que diz respeito à dimensão disonisíaca da estética nietzschiana - e de Arthur Schopenhauer, discorrendo sobre o mundo como vontade e como representação e demonstrando de que maneira essas duas filosofias dialogam com o imaginário de Durand dentro da poesia anteriana.
Representações da maternidade em Poemas da recordação e outros movimentos, de Conceição Evaristo
Authors: Oliveira Leite de Souza Ariel
Published: July 2020

O presente ensaio propõe a análise das representações da maternidade na obra Poemas da recordação e outros movimentos (2017), de Conceição Evaristo, a partir da teoria do imaginário. Para isso, foram selecionados três poemas: “Filhos na rua”, “Eu-mulher” e “Bendito o sangue de nosso ventre”. Nestes, a simbologia da maternidade é explorada a partir dos arquétipos dos elementos materiais: fogo, água, ar e terra, conforme estabelecido por Gaston Bachelard. Além disso, tendo em vista a escrevivência proposta pela poeta, este ensaio extrapola as noções do imaginário, cruzando a análise das imagens poéticas com uma discussão sócio-histórica sobre as referidas representações.
Maria Moura e Marialva
Authors: Barros Bianca Matos , Linck Piva Mairim
Published: July 2020

O artigo intenta analisar as representações femininas na obra Memorial de Maria Moura, de Rachel de Queiroz. O livro, lançado em 1992, centra-se na narrativa de Maria Moura, personagem do século XIX. A obra apresenta diferentes vozes narrativas, Maria Moura e a personagem Marialva são duas dentre essas diversas instâncias, que, no entanto, tornam-se as mais significativas. Para a análise desses vozes e figuras femininas, busca-se apoio nas perspectivas de análises simbólicas que colaboram para o desvelamento dos múltiplos significados da representação feminina.
Najib Mahfuz’s Thought: Approach to A Change of Role of Egyptian Women in Thulathiyah (Trilogy)
Authors: Munthe Bermawy
Published: July 2020

The object of this article is a novel of Najib Mahfuz entitled al-Thula@thiyah by utilizing the formal object of genesis structuralism theory, which states that an article especially a masterpiece is an expression of the writers’ view on the world, the human facts, the collective subject, and a historicity. This article has found that Najib Mahfuz indirectly states in his masterpiece al-Thula@thiyah that the change from traditional roles of the Egyptian women into the social roles of the Egyptian new women might be based on three pillars of approaches having mutual synergy those are the evolutionary and gradual approach, the assertive and persuasive approach, and the education process approach. Applying those three approaches, Najib examines that the change and improvement of the Egyptian new women require a long process divided into three generations as follows: Bain al-Qas}rain generation (October 1917 – April 1919), Qas{r al-Shauq generation (July 1924 – August 1927), and al-Sukkariyah generation (January 1935 – 1944). Najib Mahfuz examines that the change in the Eygptian women is an absoluteness that is through a polite education. Moreover, he examines that higher education for women is life necessities for their future time. According to Najib Mahfuz, the vision of education is one bridge of change although this opportunity has not been opened yet for the third generation of Egyptian women. They think that high education is divided into four perspectives as follows: it is the life necessities, it is a prohibition although it gives opportunities, it may cause difficulties in finding a husband especially for those who are not beautiful, and it is not a must because the basic education is enough.
Conflict and Its Resolution in Indonesian Islam: A Case Study of a Javanese Muslim Society in Riau
Authors: Rosidi Imron , Maulana Maulana , Khotimah Khotimah
Published: July 2020

This paper aims to examine the extent to which a Muslim society in Indonesia solves its conflict. By using a Muslim society in Riau as a case study, this article argues that the society observed has a unique characteristic which may differ from other Muslim societies in other regions. It proposes that, in this community, the negotiation is done silently to shape the peaceful social interaction and harmonious relationship. In fact, the conflict within this society is actually corrosive when the elites have basically different education background categorized into Pesantren and University graduates making diverse ideas about religious and educational issues. The conflict is identified to be hybrid as it is not solely religious or non-religious matters. The political dimension is influential which deconstructs the meaning of charismatic leader in this society. The authority of local kiyai or kiyai kampong is renegotiated by ordinary people when the kiyai is invited to be involved in the political contest by politicians. This article provides an insight on how local Islam has proposed a best example of peaceful conflict resolution in Indonesia. It demonstrates the uniqueness of Indonesian Muslims’ way to solve their internal conflict.
Islam and Local Traditions: The Study of the Thinkings of Abdurrahman Wahid (1940-2009) and Khalil Abdul Karim (1930-2002) an Indonesian and an Egyptian Perspective
Authors: Mahmudah Siti
Published: July 2020

Islam and local tradition had already coexisted peacefully since Islam was revealed by Allah for the first time through the Gabriel Angel to the Prophet Muhammad in Mecca on 610 M. According to Mohammed A. Muqtedar Khan, there were traditions and ethics of Islam, based on the origin of the the sharia misunderstood by the most Muslims until now. Abdurrahman Wahid (Gus Dur) with his theory of the Pribumisasi Islam and Khalil Abdul Karim with his theory about the early existence of the Islam and sharia has been revealed among the pre-Islamic Arab tradition as the blueprint for Islam and the sharia in this era. Both of these theories are those of the continuation of Islam for all times and places.  For the first time, Islam and the sharia gave high appreciation and respect to the Arab tradition and had even enshrined Arab traditions that are considered good and maslahat for humanitarian life remains entrenched to the teachings of Islam and enshrined in the Qur'an. Both of these theories can be used as the basis for rejecting the discovery of Timothy Daniel about "Islamic Spectrum in Java" (2009) which holds that the religious practice of Java is the Kejawen belief (a syncretic), because the teachings of Islam has mixed with local traditions. Therefore, I assert that the religious practice of Java is very diverse and cannot be called as a Kejawen belief (a syncretic). The practice of the Kejawen belief in religious practice in Java is a form of Islam whichis a contextual learning and will continue its process on the perfection of Islam to continue to honor the tradition of the Javanese community that has been practiced by their ancestors and has been successively crystallized and is very difficult to eliminate. Some examples are: bathing with flower tradition in the wedding event, laying flowers at the entrance of the house every Friday night, and riyungan. The reason is that the Muslim community is still able to practice the good and maslahat tradition like in the first era ofIslam in Mecca and Madina.
Strenghtening Families as A Strategy to Support Nation-State
Authors: Ghafur Waryono Abdul
Published: July 2020

This paper was written to present the role of the biggest Islamic religious organizations in Indonesia, Muhammadiyah and NU, in supporting the nation-state through their roles in strengthening families. Family is the smallest social unit in the society that is a base of the formation of all institutions including the nation-state. Therefore, a nation-state genealogically and sociologically appeared and was formed from some units of families that agree with and bind to each other to live together in an area. As a foundation, family situation becomes the determinant of a nation-state existence and sustainability. A family that is strong and has resiliency will realize a nation-state that is strong and has endurance. On the other hand, if the base of a unit, which is a family, is weak, the nation-state will be easily collapsed. On the basis of the importance of families for the nation-state, the Indonesian government has set the rules, the government regulations, and the minister regulations on family development, such as the Acts No. 10 of 1992 on Family Development. An analysis with sociological approach on some rules above is sufficient for a proof that the state or the government is concerned much at family development. The state even has made the marriage law for the Moslems – as the majority – although based on al-Qur’an and Hadith, Islam has very clearly ruled how to build families. Two Islamic societal organizations, NU and Muhammadiyah, also have the concept of family building, which are maslahah family and sakinah family. Studies on some rules and concepts related to families have found that all parties commit to realize the family destination, in which a family has toughness and strength in religious, economic, environmental, and social aspects, so that the family functions like the religious function are really guaranteed; families become the center and also the source of varied virtue and glory. Some facts have been found, which are not a few, about collapsed families and households, but the roles of the state and the societal organizations in strengthening families are sufficient to stem the flow of the destruction of a nation-state. Tough families become the main factor of supporting the toughness and strength of the nation-state.
Le terme ẖnw et le début du Naufragé
Authors: Obsomer Claude
Published: July 2020

Le terme ẖnw est attesté à quatorze reprises dans le récit du Naufragé : 7 fois dans la préposition composée m-ẖnw, 7 fois en tant que substantif. Rares sont les traducteurs de l'oeuvre qui ont traduit de la même manière les 7 occurrences du nom ẖnw : Résidence, pays, patrie, … Cette hésitation sur le sens à lui conférer concerne surtout la première occurrence du terme, lorsque le bateau arrive à quai au terme de l'expédition de Nubie. Les marins sont-ils à Éléphantine, comme on l'a souvent cru, ou à la Résidence de Licht ? Cette étude permet de lever toute ambiguïté sur ce point important pour la compréhension de l'oeuvre. C'est au port de Licht que le bateau se trouve amarré de retour de Nubie.
Versions of the New Testament: A Survey of (some) Recent Research
Authors: Elliott James Keith
Published: July 2020

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Frank C. Herbst: An Artist and Illustrator from Essex County, New Jersey, and a Case of Mistaken Identity
Authors: Hammond Joseph W.
Published: July 2020

Frank C. Herbst (1890 – 1966) was a prolific and talented Essex County artist who not only provided illustrations for magazines, but also left behind a significant number of well-done landscape views of New Jersey, New York, and the surrounding area. This article outlines his life and career. It also corrects misinformation about Herbst that has been inadvertently disseminated through an important art reference work and the internet to a global audience.
Equivalence of Friction and Viscous Damping in a Spring-Friction System with Concave Friction Distribution
Authors: Li Shanshan , Wei Biao , Tan Hao , Li Chaobin , Zhao Xiaomiao
Published: July 2020

With the aim of unifying the damping concept and evaluating the amount of damping in a structure, this paper investigates whether friction action can be equivalent to traditional viscous damping. The research focused on purely concave friction distribution cases, uniform friction distribution cases, and their combination cases in a spring-friction isolation system. The dynamic responses of a numerical method using friction action were compared with those of another numerical methods using equivalent viscous damping under sine wave ground motions. The comparison of results shows that the friction action can be converted to the equivalent viscous damping action with some errors by using an equation. The conversion accuracy of uniform friction distribution cases using the first term of the equation is much worse than that of the purely concave friction distribution cases using the second term of the equation. The reason for this being that the uniform friction distribution can prevent the structure from sliding back to its center after the ground motion; however, the viscous damping action does not have such a negative function. The comparison errors, between using the friction action and using the equivalent viscous damping, are directly proportional to the ratio of the component of uniform friction distribution to the component of purely concave friction distribution.
Complex Interactions between Genes and Social Environment Cause Phenotypes Associated with Autism Spectrum Disorders in Mice
Authors: Sledziowska Monika , Kalbassi Shireene , Baudouin Stéphane J.
Published: July 2020

The etiology of autism spectrum disorders (ASDs) is a complex combination of genetic and environmental factors. Neuroligin3, a synaptic adhesion protein, and cytoplasmicFMR1interacting protein 1 (CYFIP1), a regulator of protein translation and actin polymerization, are two proteins associated with ASDs that interact in neuronsin vivo. Here, we investigated the role of the Neuroligin3/CYFIP1 pathway in behavioral functioning and synapse formation in mice and found that it contributes to motor learning and synapse formation in males. Similar investigation in female mice revealed an absence of such phenotypes, suggesting that females are protected against mutations affecting this pathway. Previously, we showed that the social environment influences the behavior of male mice. We extended this finding and found that the transcriptome of wild-type mice housed with their mutant littermates, lacking Neuroligin3, differed from the transcriptome of wild-type mice housed together. Altogether, these results identify the role of the Neuroligin3/CYFIP1 pathway in male mouse behavior and highlight its sensitivity to social environment.
Development of a Mouse Reporter Strain for the Purinergic P2X2Receptor
Authors: Kim Seol-Hee , Bahia Parmvir K. , Patil Mayur , Sutton Sydney , Sowells Isobel , Hadley Stephen H. , Kollarik Marian , Taylor-Clark Thomas E.
Published: July 2020

The ATP-sensitive P2X2ionotropic receptor plays a critical role in a number of signal processes including taste and hearing, carotid body detection of hypoxia, the exercise pressor reflex and sensory transduction of mechanical stimuli in the airways and bladder. Elucidation of the role of P2X2has been hindered by the lack of selective tools. In particular, detection of P2X2using established pharmacological and biochemical techniques yields dramatically different expression patterns, particularly in the peripheral and central nervous systems. Here, we have developed a knock-in P2X2-cre mouse, which we crossed with a cre-sensitive tdTomato reporter mouse to determine P2X2expression. P2X2was found in more than 80% of nodose vagal afferent neurons, but not in jugular vagal afferent neurons. Reporter expression correlated in vagal neurons with sensitivity to α,β methylene ATP (αβmATP). P2X2was expressed in 75% of petrosal afferents, but only 12% and 4% of dorsal root ganglia (DRG) and trigeminal afferents, respectively. P2X2expression was limited to very few cell types systemically. Together with the central terminals of P2X2-expressing afferents, reporter expression in the CNS was mainly found in brainstem neurons projecting mossy fibers to the cerebellum, with little expression in the hippocampus or cortex. The structure of peripheral terminals of P2X2-expressing afferents was demonstrated in the tongue (taste buds), carotid body, trachea and esophagus. P2X2was observed in hair cells and support cells in the cochlear, but not in spiral afferent neurons. This mouse strain provides a novel approach to the identification and manipulation of P2X2-expressing cell types.
Feminist Revisions
Authors: Hershberger Monica A.
Published: July 2020

In 1945 Virgil Thomson and Gertrude Stein began working on The Mother of Us All, their second and final opera. If the pair’s chosen subject matter—the life and work of Susan B. Anthony (1820–1906)—was radical in and of itself, so too was the librettist’s approach to it. As Stein scholar Jane Palatini Bowers has carefully documented, Stein quoted heavily from political speeches as she crafted her libretto, using numerous “male-generated texts” but ultimately telling an “antipatriarchal” story. Bowers and others have argued that Stein’s revisions of these texts tell not only Anthony’s but also Stein’s story. I argue that in its final form, The Mother of Us All tells yet another story, for it was Thomson who revised Stein’s libretto after her untimely death in 1946, approximately one year before the opera’s premiere at Columbia University. Drawing extensively on both versions of the libretto text, as well as the musical score, I assert that Thomson sought to buy into Stein’s feminist project, and I read his revisions to The Mother of Us All as his attempt to refashion himself as her political and artistic partner.

At the same time that The Mother of Us All represented a very personal project for Stein and Thomson, it was a more broadly political project as well, a critique of the status of women in the United States following World War II. As Stein and Thomson looked back on the significance of the women’s suffrage movement, they chose not to bring their story to an unequivocally rousing conclusion celebrating the passage of the Nineteenth Amendment. Instead, they suggested an unfinished struggle, one that so-called “second-wave” feminists would task themselves with furthering during the latter half of the twentieth century and one that would nourish productions of The Mother of Us All well into the twenty-first century.
Tensile and impact properties of pulverized oil palm fiber reinforced polypropylene composites : A comparison study with wood fiber reinforced polypropylene composites
Authors: Nordin M. N. A. , Sakamoto K. , Azhari H. , Goda K. , Okamoto M. , Ito H. , Endo T.
Published: July 2020

In this study, the Malaysian oil palm fiber (OPF) was extracted from empty fruit bunch (EFB) and used as a reinforcement of polymer composite materials. 10 wt.% and 25 wt.% of OPF were incorporated with polypropylene (PP) and maleated polypropylene (MAPP) to produce injection-molded composite material. For comparison purpose, virgin PP and polymer composites reinforced with wood fiber (WPC) were also fabricated as benchmark samples. From the tensile test result of 25 wt.% of fiber loading, it produced higher tensile properties of the composites. Moreover, the obtained OPF/PP composites showed comparable properties with the WPC material. The second objective of this study is to investigate the effect of fiber sizes on tensile and impact properties of both WPC and OPF/PP composite. The wood fiber and OPF were mechanically classified into several size ranges by using different mesh sieves and proceeded with the kneading and injection molding. The tensile and impact tests were carried out for each type of sample in order to verify the influence of fiber size on the tensile and impact resistance behavior of the WPC and OPF/PP composites.
Influence of fins designs, geometries and conditions on the performance of a plate-fin heat exchanger-experimental perspective
Authors: Ma’arof M. I. N. , Chala Girma T. , Husain Hazran , Mohamed Muhammad S. S.
Published: July 2020

A fin heat exchanger is a simple form of cooling device that is built for efficient heat transfer from one medium to another. Generally, it involves medium such as fluid to perform heat exchange via convective heat transfer. This study is aimed at investigating the effects of diverse designs (arrangements of the fins), qualities (the total surface area of the fin for heat exchange) and conditions (the surface characteristics) of fin heat exchanger on the degree of heat transfer from the experimental perspective. The fin heat exchanger was fabricated and tested. It was observed that by varying the arrangement and condition of the fins, the rate of heat transfer could be affected. However, varying the quality of the fin didn’t have much impact. Nevertheless, the quality aspect of the fin heat exchanger could play a significant role for heat exchanger of larger in scale and dimension. The coating, that is the condition of the fins, aided in decreasing the temperature at a much higher margin at all fan speeds.
Fracture cause analysis of the extruder’s shaft and geometry optimization of the spline
Authors: Lyashuk O. , Pyndus Y. , Lutsiv I. , Vovk Y. , Poberezhna L. , Tretiakov O. , Zolotyy R.
Published: July 2020

The article is devoted to increasing of the durability of technological equipment elements, forecasting of the resource and diagnostics of failures of the technical system. The basic regularities are analyzed and causes of the failure of the extruder’s working body shaft are determined. For torque values M = 40.74 - 64.37 N·m and of the extruder’s working body shaft, the stress-strain state of the contact surfaces of the keyhole of the extruder’s shaft is calculated by the method of three-dimensional finite element modelling. The maximum values of the stress intensity σint(max), which arise on the edge of the key groove, are calculated. It was established that an increase in the distance of the key groove to the fillet of the working body shaft by 2.0 mm leads to a decrease in the maximum stresses on the edge of the key groove by 15.72%. The results of the research allow optimizing the geometry of the shaft.
Simulation and experimental response of four-bar mechanism with tolerance stack
Authors: A. Akhadkar Chandrashekhar , Deoghare Ashish B. , Vaidya Adwait M.
Published: July 2020

An Equivalent Contact Stiffness (ECS) approach is proposed in this article to estimate the precise contact parameters for a revolute joint. Estimated contact parameters are used as input variables for the MBD simulation of a four-bar mechanism with tolerance stack. Simulations were carried out using Impact Force Method (IFM) and Restitution Method (RM) in MSC ADAMS. An experimental setup of the four-bar mechanism is developed with a unique feature to measure the angular velocity of the follower with respect to the crank position. The effect of tolerance stack on the angular velocity of the follower is investigated experimentally to validate the MBD simulation. The angular velocity of coupler and rocker is increased by 15.69% and 27% respectively due to tolerance stack. MBD analysis using the ECS approach provides accurate and reliable results in absence of experimental contact data. This work shall facilitate the designers to simulate the actual behaviour of the mechanism prior to prototype.
Computational performance of a-100 kW low pressure turbine to recover gas turbine exhaust energy
Authors: Ahmad Zahidin A. A. , Mamat A. M. I. , Romagnoli A.
Published: July 2020

Low Pressure Turbine (LPT) was designed to recover exhaust energy from Internal Combustion (IC) engine. The LPT is located downstream retrieved exhaust heat energy from combustion after flowing through the high pressure turbine (HPT). The work output obtained from the exhaust energy is used to drive an electric generator with power output of 1.0kW. These was not done by commercial turbine as the low efficiency resulted when operated. The main purpose of this project is to develop a scaling model for LPT with power output up to 100kW. An existing LPT that was designed with output of 1.0 kW used as guideline to upscale the turbine. Scaling factor was obtained by comparing the baseline with power output. The turbine performance was analysed by using a commercial Computational Fluid Dynamic (CFD) ANSYS CFX. The study found that the scaling factor f, of 10 can be used to produce a 100kW at passage. Thus, the geometrical parameter will be scaled accordingly. The rotational speed is reduced from 50,000 rpm to 5,000 rpm. The CFD analysis found that 81% of total-static efficiency, ht-s at velocity ratio VR, of 0.68 and the Pressure Ratio PR, of 1.12 producing power of 119.88 kW which nearest with the design point which is at 100 kW. Despite the LPT swallowing capacity is increased by 50 times, the LPT is still limited by the operational choking Pressure Ratio, PR limitation which is 1.4.
Statistical analysis of second repair welding on dissimilar material using Taguchi method
Authors: Hussein N. I. S. , Laily S. , Salleh M. S. , Ayof M. N.
Published: July 2020

This paper presents an experimental investigation on effect of welding parameter to repair welding of dissimilar material using Gas Metal Arc Welding (GMAW) machine. Taguchi Method has been used to analyse the statistical analysis by using Minitab Software. Repair welding getting more popular nowadays due to saving cost and prolong the material service life. The effect of repair welding of dissimilar material on mechanical properties have been studied. Statistical analysis using Taguchi Method by Minitab Software with three times repetition of L9 orthogonal array. Setting up GMAW machine with current (150A-170A), voltage (17V-21V) and jig rotational speed (50rpm-100rpm) were prepared with 3.00mm of Stainless Steel 304L and 3.60mm Carbon Steel 1387.Result shows that voltage gave a huge impact to tensile testing and micro hardness of second repair welding. While current and jig rotational speed gave less impact to responses. The benefit shown have caused repair welding to be accepted and applied in the industry. Regular and total maintenance is able to contribute to the savings while producing good preventive maintenance schedule.
Numerical investigations of various aspects of plaque deposition through constricted artery
Authors: Goswami P. , Mandal D. K. , Manna N. K. , Chakrabarti S.
Published: July 2020

The pulsatile blood flow through constricted artery generates fluid mechanical forces on internal layer of artery, endothelium. These fluid mechanical factors affect endothelial lining from keeping artery healthy. In this paper, a series of numerical simulations of modeled bell shaped stenosed artery have been carried out for investigation of fluid mechanical factors of realistic pulsatile flow at the inlet of modeled stenosis with bell shaped geometry. The governing equations for two-dimensional unsteady laminar flow of incompressible fluid are solved by finite volume method followed by SIMPLER algorithm. The fluid mechanical factors, particularly wall pressure, streamline contour, peak wall shear stress, low wall shear stress and oscillatory shear index, having inferences to the arterial disease, are investigated by simulation results of different percentage of restrictions. All these parameters have a noticeable impact for the plaque deposition. The impacts of Reynolds number and Womersley number for both of mild stenosis and severe stenosis on arterial disease, atherosclerosis are also investigated by evaluating fractional flow reverse and oscillatory shear potential.
On the preparation of EPDM-g-MAH compatibilizer via melt-blending method
Authors: A. Razak J. , Mohamad N. , Mahamood M. A. , Jaafar R. , Othman I. S. , Ismail M. M. , Tee L. K. , Junid R. , Mustafa Z.
Published: July 2020

This paper presents an experimental investigation to determine the optimum composition of maleic anhydride (MAH) and dicumyl peroxide (DCP) as initiator for ethylene-propylene-diene-monomer grafted MAH (EPDM-g-MAH) compatibilizer preparation, using response surface methodology (RSM) approach. EPDM-g-MAH was prepared in the laboratory scale by melt blending method using an internal mixer. For this study, the effects of MAH (2.50 – 7.50 wt.%) and DCP (0.10 – 0.30 wt.%) towards grafting efficiency was determined. Two level full factorial design of experiment (DOE) is applied to establish the relationship between these two independent factors of raw materials. Analysis of variance (ANOVA) and the optimization menu were utilized to decide the raw materials formulation with maximum grafting efficiency. Quantitative analysis based on infra-red (IR) spectral intensity supported by 1H-NMR spectral are used to propose for EPDM-g-MAH grafting mechanism. Standard calibration curve for quantity ratio plot was exponential with R2 = 89.19%. It was found that an optimum about 8.52% of MAF grafting efficiency has been yielded with DCP factor has contributed larger effect at 67.45% of contribution effect. Anhydride stretching of grafted C=O as confirmed by FTIR peak at 1713 cm-1 and 1770 – 1792 cm-1 has responsible for MAH grafting into EPDM rubber. Based on FTIR, 1H-NMR and 2D-COSY spectral analysis, reaction mechanism for EPDM-g-MAH grafting was successfully proposed with two possible termination steps.
Influence of ball milling duration of quarry dust on the properties of nickel-quarry dust composite coating
Authors: Othman I. S. , M. Azam M. A. F. M. , A. Bakar M. F. , Kasim M. S. , A. Rahman T. , Mohamad M. R.
Published: July 2020

The main purpose of this research is to investigate the effect of various ball milling duration on the surface morphology, hardness and wear properties of nickel- quarry dust (Ni-QD) composite coating on aluminium alloy 6061 (AA6061) substrate. Ni-QD composite coatings were deposited on zincated AA6061 substrate by using electrodeposition technique. The quarry dust particles were prepared by ball milling process at 5, 10, 15 and 20 hours. Later, the quarry dust particles were added to nickel citrate bath at 50 g/l for electrodeposition of Ni-QD composite coating. The electrodeposition process was carried out for 1 hour at 40º C, under the current density of 3 A/dm2. X-ray Fluorescence (XRF), X-ray Diffraction (XRD) and scanning electron microscope (SEM) analyses were carried out in order to investigate the influence of ball milling duration on the prepared quarry dust as well as the produced composite coating. In addition, microhardness and wear testing of Ni-QD composite coatings were also performed in this study. The microhardness values of the nickel composite coatings using ball milled quarry dust are higher than using crushed quarry dust. The microhardness values for all nickel composite coatings produced from crushed and ball milled quarry dust increases from 190.6 to 282.2. The increase in microhardness values is due to the high density of quarry dust in the electrolyte. The damage of the wear scar was improved, as the ball milling duration increases from 0 to 20 hours.
Predictive tool for frictional performance of piston ring-pack/liner conjunction
Authors: Tee J. W. , Hamdan S. H. , Chong W. W. F.
Published: July 2020

Fundamental understanding of piston ring-pack lubrication is essential in reducing engine friction. This is because a substantial portion of engine frictional losses come from piston-ring assembly. Hence, this study investigates the tribological impact of different piston ring profiles towards engine in-cylinder friction. Mathematical models are derived from Reynolds equation by using Reynolds’ boundary conditions to generate the contact pressure distribution along the complete piston ring-pack/liner conjunction. The predicted minimum film thickness is then used to predict the friction generated between the piston ring-pack and the engine cylinder liner. The engine in-cylinder friction is predicted using Greenwood and Williamson’s rough surface contact model. The model considers both the boundary friction and the viscous friction components. These mathematical models are integrated to simulate the total engine in-cylinder friction originating from the studied piston ring-pack for a complete engine cycle. The predicted minimum film thickness and frictional properties from the current models are shown to correlate reasonably with the published data. Hence, the proposed mathematical approach prepares a simplistic platform in predicting frictional losses of piston ring-pack/liner conjunction, allowing for an improved fundamental understanding of the parasitic losses in an internal combustion engine.
Computational fluid dynamic (CFD) of vertical-axis wind turbine: mesh and time-step sensitivity study
Authors: Ashwindran S. , Azizuddin A. A. , Oumer A. N.
Published: July 2020

This paper presents mesh and time-step dependence study of newly designed drag type vertical axis wind turbine. Ansys FLUENT a commercially available CFD solver was used to perform CFD numerical study on the drag type wind turbine. In computational analysis, 2D models was simulated under unsteady flow fields using SST k-ω to achieve stabilized numerical convergence. The model was analyzed at static and dynamic mode, where sliding mesh technique was used to analyze the turbine in dynamic mode. Three main parameters were taken under careful consideration: mesh resolution, turbulence model and time-step. Aerodynamic force was used in mesh sensitivity study for both static and sliding mesh. A small discrepancy in results of 2D sliding mesh result at different time-step and mesh resolution was observed. The generated results showed good agreement between fine and medium mesh with small difference in the initial initialization. In time-step dependency study for static mesh, dt=0.0002 time-step size was chosen for economical computational cost.
La práctica odontológica en el marco de la pandemia causada por el COVID-19
Authors: Hoyos-Cadavid Ana María , Ziroldo Lopes João Vitor , Pereira Boog Gustavo Henrique , Albuquerque Chinelatto Lucas , Carneiro Hojaij Flavio , Lourenço Silvia Vanessa
Published: July 2020

El COVID-19 fue descrito por primera vez en Wuhan, China en diciembre de 2019, desde entonces se ha extendido a todos los continentes y la OMS lo declaró como pandemia. Se transmite de persona a persona o por contacto directo con superficies contaminadas y su sintomatología es inespecífica, pudiendo desencadenar neumonía grave e incluso la muerte. Por ser un evento recientemente identificado, no existe un tratamiento específico y su manejo se centra en el control de los síntomas. La profesión odontológica se muestra como una de las más afectadas por esta enfermedad, debido al contacto próximo con los pacientes y a la exposición continua a aerosoles con carga microbiana alta, producidos por los instrumentos de trabajo. Hasta el momento no existen protocolos estandarizados para la práctica clínica en el marco de esta pandemia y las informaciones que circulan por redes sociales y medios de comunicación son cambiantes y erróneas la mayoría de las veces. El objetivo principal de este trabajo, es brindar al profesional informaciones relevantes sobre el COVID-19, basadas en la evidencia disponible, que ayuden a la mitigación y prevención de la propagación del virus durante la práctica odontológica.
NetExtractor: Extracting a Cerebellar Tissue Gene Regulatory Network Using Differentially Expressed High Mutual Information Binary RNA Profiles
Authors: Husain Benafsh , Hickman Allison R , Hang Yuqing , Shealy Benjamin T , Sapra Karan , Feltus F Alex
Published: July 2020

Bigenic expression relationships are conventionally defined based on metrics such as Pearson or Spearman correlation that cannot typically detect latent, non-linear dependencies or require the relationship to be monotonic. Further, the combination of intrinsic and extrinsic noise as well as embedded relationships between sample sub-populations reduces the probability of extracting biologically relevant edges during the construction of gene co-expression networks (GCNs). In this report, we address these problems via our NetExtractor algorithm. NetExtractor examines all pairwise gene expression profiles first with Gaussian mixture models (GMMs) to identify sample sub-populations followed by mutual information (MI) analysis that is capable of detecting non-linear differential bigenic expression relationships. We applied NetExtractor to brain tissue RNA profiles from the Genotype-Tissue Expression (GTEx) project to obtain a brain tissue specific gene expression relationship network centered on cerebellar and cerebellar hemisphere enriched edges. We leveraged the PsychENCODE pre-frontal cortex (PFC) gene regulatory network (GRN) to construct a cerebellar cortex (cerebellar) GRN associated with transcriptionally active regions in cerebellar tissue. Thus, we demonstrate the utility of our NetExtractor approach to detect biologically relevant and novel non-linear binary gene relationships.
Foolishness-for-Christ as a Feat of True Sanctity in the Works of Russian Writers of 19th Century
Authors: Zhilina Natalia P. , Zylina-Els Tatiana
Published: July 2020

The article studies the phenomenon of “foolishness-for-Christ” depicted in the works of Russian writers of the 19 century, e. g. A. Pushkin’s Boris Godunov, O. Somov’s A Fool-for-Christ, A. Ostrovsky’s Kozma Zakharyich Minin, Sukhoruk, L. Tolstoy’s Childhood. The novelty of the research is presented primarily in the use of an axiological method for analysis of works of fiction as well as in interpretation of characters in terms of theology which proves that a “God’s fool” is shown as a person of an inverse perspective. The characters cannot be considered as part of the joking culture and the game, their life is never divided into night and day time, inner or outerdomains. They exist in the realm of “foolishness-in-Christ” that proves that while living in this world they belong to a different one and obey another law. In the studied literary works all the “holy fool” characters are marked by deep spiritual involvement and apparent conciliarism. They treat people with childlike sincerity and unselfishness personifying, thus, the Christian ideal of the writers. In these literary works “foolishness-for-Christ” displaying traits of national mentality is presented as the avatar of Christian faith manifested in a complete denial of worldly life and values, the first of which is “the wisdom of the world” (1 Kor. 3:18—19).