bluuebunny/crossref_metadata_2025 huggingface dataset:
Magnetic resonance imaging of the cranial nerves in congenital, traumatic, and vascular diseases: a pictorial essay
Authors: Dalaqua Mariana , Nascimento Felipe Barjud Pereira do , Miura Larissa Kaori , Reis Fabiano , Garcia Márcio Ricardo Taveira , Barbosa Júnior Alcino Alves
Published: May 2021

Abstract The cranial nerves, which represent extensions of the functional structures of the brain, traverse the head and neck. They are connected to various cranial structures and are associated with several diseases. An in-depth understanding of their complex anatomy and normal imaging appearance allows the examiner to identify and characterize abnormalities with greater precision. One important tool for evaluating the cranial nerves is contrast-enhanced magnetic resonance imaging, especially three-dimensional steady-state free precession sequences, which provide high soft-tissue and spatial resolution, despite the slenderness of the nerves. In most cases, imaging findings are nonspecific. Therefore, to narrow the differential diagnosis, it is necessary to take a full patient anamnesis, perform a focused physical examination and order laboratory tests. In this pictorial essay we review, illustrate and discuss, from a pathophysiological perspective, congenital, traumatic, and vascular diseases of the cranial nerves.
Evaluation of variations of the glenoid attachment of the inferior glenohumeral ligament by magnetic resonance arthrography
Authors: Simão Marcelo Novelino , Kobayashi Maximilian Jokiti , Hernandes Matheus de Andrade , Nogueira-Barbosa Marcello Henrique
Published: May 2021

Abstract Objective: To evaluate the anatomical variations of the attachment of the inferior glenohumeral ligament (IGHL) to the anterior glenoid rim. Materials and Methods: This was a retrospective review of 93 magnetic resonance arthrography examinations of the shoulder. Two radiologists, who were blinded to the patient data and were working independently, read the examinations. Interobserver and intraobserver agreement were evaluated. The pattern of IGHL glenoid attachment and its position on the anterior glenoid rim were recorded. Results: In 50 examinations (53.8%), the glenoid attachment was classified as type I (originating from the labrum), whereas it was classified as type II (originating from the glenoid neck) in 43 (46.2%). The IGHL emerged at the 4 o’clock position in 58 cases (62.4%), at the 3 o’clock position in 14 (15.0%), and at the 5 o’clock position in 21 (22.6%). The rates of interobserver and intraobserver agreement were excellent. Conclusion: Although type I IGHL glenoid attachment is more common, we found a high prevalence of the type II variation. The IGHL emerged between the 3 o’clock and 5 o’clock positions, most commonly at the 4 o’clock position.
Central nervous system infection: imaging findings suggestive of a fungus as the cause
Authors: Campos Lillian Gonçalves , Conceição Thaylla Maybe Bedinot da , Krüger Marília Sfredo , Perez Juliano Adams , Duarte Juliana Ávila
Published: May 2021

Abstract Fungal infections of the central nervous system (CNS) are rare. However, because of the increase in the number of immunocompromised individuals, they have been gaining prominence in the differential diagnosis of CNS infections. Imaging techniques are sensitive for detecting and localizing an abnormality, in many cases allowing the origin of a lesion to be categorized as infectious, inflammatory, neoplastic, or vascular. This essay illustrates the magnetic resonance imaging and computed tomography findings of the most common fungal infections of the CNS, based on the experience of the Radiology Department of the Hospital de Clínicas de Porto Alegre, in the city of Porto Alegre, RS, Brazil.
EDUCAÇÃO E PANDEMIA: OUTRAS OU REFINADAS FORMAS DE EXCLUSÃO
Authors: ASSIS ANA ELISA SPAOLONZI QUEIROZ
Published: May 2021

RESUMO: O objetivo do artigo é problematizar discursos proferidos por professores e estudantes no âmbito dos órgãos de gestão democrática educacionais públicos, enfatizando aspectos excludentes que tendem a destacar perspectivas de inovação, proatividade e/ou sucesso. Recorre-se à argumentação conceitual, de forma a explorar as categorias analíticas que emergiram desse processo especulativo, quais sejam: necessidade, tranquilidade e facilidade. A categoria discursiva de “necessidade” é sustentada tanto a partir de discursos individualistas, como “preciso me formar”, quanto coletivistas: “importante fazer o que for possível”. Já a categoria de “tranquilidade” vem acompanhada de um discurso que pressupõe familiaridade com as ferramentas e o modelo remoto: “é intuitivo”; “é só usar”; “sempre existiu a plataforma, todos deveriam usar e saber usar”. E, por fim, a categoria da “facilidade” se pauta na generalização sem conhecimento de causa, traduzida em frases como: “mas todo mundo tem um celular hoje em dia”. Conclui-se questionando a validade dos argumentos ao exasperarem fatores de exclusão em lugar de mitigá-los.
Quando o Estado mata: desafios para medir os crimes contra a vida de autoria de policiais
Authors: Bueno Samira , Lima Renato Sérgio de , Costa Arthur Trindade Maranhão
Published: May 2021

Resumo O artigo discute os processos e taxonomias utilizadas para classificar os episódios de homicídios praticados por policiais no Brasil, utilizando como estudo de caso o estado de São Paulo. Trata-se de um esforço de diálogo entre os campos da sociologia da segurança pública e o da sociologia da quantificação aliado ao estudo empírico da produção e uso de estatísticas criminais por parte das instituições que compõem o sistema de justiça criminal e segurança pública do Brasil. O objetivo, aqui, é relatar como a disputa em torno das mortes decorrentes de intervenções policiais está inserida em uma disputa maior sobre o sentido das políticas de segurança pública, e que as nomenclaturas adotadas consistem em táticas que buscam garantir a legitimidade do uso da força letal pelas polícias. A criação de múltiplas categorias para mensurar o resultado morte em decorrência da atividade policial e sua contabilização apartada dos homicídios dolosos constituem estratégia que turva a compreensão completa do significado dessas ocorrências e revela o quanto a opacidade ainda está presente, no país, na forma de governar e responder às demandas por mais eficiência no controle do crime e na manutenção da ordem pública.
A política de um cenário de dados transformado: estatísticas etnorraciais no Brasil em uma perspectiva comparativa regional
Authors: Loveman Mara
Published: May 2021

Resumo As primeiras décadas do século XXI presenciaram uma dramática transformação do cenário de dados para a produção de estatísticas etnorraciais na América Latina. Essa transformação é mais evidente nos censos nacionais da região. Há algumas décadas, quase nenhum país latino-americano incluía questões sobre raça ou etnia em seu censo nacional. Já no censo de 2010, quase todos os países da região coletaram informações sobre identificação étnica ou racial. Este artigo argumenta que a produção de dados populacionais etnorraciais na América Latina é tanto um produto da política quanto produz a política. Tais dados contribuem para moldar o terreno que parecem meramente descrever, mas nem sempre da maneira prevista ou pretendida. Colocar a experiência brasileira em uma perspectiva comparativa regional revela como essas estatísticas oficiais podem produzir resultados que são simultaneamente producentes e contraproducentes para os objetivos daqueles que lutam, primeiramente, por sua produção.◊
Indígenas e ensino superior: as experiências universitárias dos estudantes Kaingang na UFRGS
Authors: Ames Valesca Daiana Both , Almeida Marilis Lemos de
Published: May 2021

Resumo Desde 2008, a Universidade Federal do Rio Grande do Sul (UFRGS), como parte de sua política de ações afirmativas, destina anualmente dez vagas para estudantes provenientes de comunidades indígenas em seus cursos de graduação. A presença desses sujeitos, historicamente ausentes do espaço universitário, representa um momento enriquecedor, tanto para os estudantes quanto para a própria instituição, mas também traz consigo muitos desafios. Este artigo analisa as experiências universitárias de alguns estudantes Kaingang na UFRGS – etnia que representa 85% dos alunos indígenas ingressantes na instituição. Mais especificamente, examina como eles acompanharam os conteúdos de seus cursos de graduação e como se relacionaram com colegas não indígenas e com professores. Os resultados mostram as dificuldades no uso, reprodução e apropriação dos conhecimentos acadêmicos enfrentadas pelos indígenas na tarefa de se tornarem estudantes universitários, bem como o tipo e a qualidade das relações estabelecidas com colegas e professores. Concluímos que o processo de aprendizagem do ofício de estudante é mais árduo e lento para os estudantes indígenas, tendo em vista as baixas expectativas de ingressar no ensino superior, a sua formação escolar precária, a falta de diálogo intercultural na universidade e as situações preconceituosas e discriminatórias vivenciadas no interior da UFRGS.
Protocolo acelerado de degradação do sistema de reforço EBR-CFRP aplicado em vigas de concreto armado
Authors: Dalfré Gláucia Maria , Sarti Júnior Luiz Antônio , Araújo Ciro José Ribeiro Villela
Published: May 2021

Resumo Em geral os materiais na indústria da construção civil estão sujeitos à mecanismos de degradação, como alterações químicas, físicas e mecânicas. No âmbito de elementos de concreto armado reforçados com materiais compósitos, verifica-se que a degradação afeta a parte mais sensível do sistema, as resinas à base de epóxi. O presente trabalho é baseado no uso do protocolo de acondicionamento apresentado na norma ACI 440.9R (AMERICAN..., 2015>) para avaliação da durabilidade de sistemas de reforço aplicados em vigas de concreto armado reforçadas à flexão com mantas de fibra de carbono, aplicadas segundo a técnica de colagem externa EBR. Os resultados do protocolo de degradação acelerado foram comparados com os obtidos em ensaios de intemperismo natural. Esses demonstraram que os adesivos epoxídicos apresentam grandes reduções em suas propriedades mecânicas, enquanto os compósitos de CFRP permanecem com suas propriedades inalteradas após exposição ao intemperismo ou degradação acelerada. O sistema de reforço proporciona grandes incrementos de capacidade de carga e rigidez das vigas. Entretanto, verificou-se que os ensaios realizados após um ciclo de degradação acelerado com duração de 1.000 h (42 dias) e após 6 meses de exposição às intempéries demonstraram redução de aproximadamente 10% da capacidade de carga dos elementos reforçados, indicando uma possível degradação do sistema de reforço.
Environmental performance analysis for the construction phase of building projects by using the indicators recommended by PBQP-H
Authors: Fernandes Luara Lopes de Araujo , Costa Dayana Bastos
Published: May 2021

Abstract The construction industry uses certain performance indicators to monitor the impacts generated by their associated activities. However, the strict determination of these indicators cannot enhance the performance of a company, and certain benchmarks must be established to guide the goals and evaluate the performance of the companies. Therefore, this study aims to evaluate the scenario and evolution of the environmental performance of the construction phase of building projects by using the indicators recommended by the Brazilian Program for Quality and Productivity in Habitat (PBQP-H) and to establish benchmarks for these indicators. The research strategy adopted in this study corresponded to a survey with 186 building projects. The results involved environmental performance scenario of the building sector in different scopes. The main contribution of this study is the establishment of a set of parameters and benchmarks that can help enhance the performance of the building construction sector. As practical implication, the presented analysis and trends may provide guidance to governments and sectoral initiatives to formulate public policies to enhance the environmental performance of the sector.
Proposta de modelo estatístico para hierarquização do resultado de pesquisas de satisfação de clientes
Authors: Saraiva Raísse Layane de Paula , Barros Neto José de Paula , Maués Luiz Maurício Furtado
Published: May 2021

Resumo Atender aos requisitos dos clientes é primordial para qualquer empresa ou indústria, uma vez que entregar aos clientes o produto que eles desejam é a sua razão de existir. Nos projetos habitacionais, compreender e traduzir tais requisitos em atributos de projeto visa buscar a total satisfação dos clientes e garantir vantagem competitiva. Para tanto, metodologias baseadas em aspectos qualitativos vêm sendo desenvolvidas, ainda assim, estas apresentam limitações quanto à garantia da qualidade dos produtos imobiliários. Com o intuito de propor um modelo para hierarquizar requisitos resultados de pesquisas de satisfação, baseado em aspectos quantitativos, este trabalho se dispôs a analisar um banco de dados composto por pesquisas de satisfação de empreendimentos habitacionais de padrões econômicos distintos. Foram empregadas análises das medidas de tendência central e dispersão, determinação da confiabilidade por meio do Alpha de Cronbach e análise fatorial. Pôde-se constatar que a principal ferramenta capaz de atender aos objetivos é a análise fatorial, sendo os aspectos construtivos com maior possibilidade de fornecer satisfação aos clientes aqueles relacionados a tamanho, qualidade, funcionalidade e conforto.
Proposta de avaliação da qualidade de vida e do bem-estar em áreas verdes urbanas
Authors: Campos Juliana Cláudia Bezerra , Silveira José Augusto Ribeiro da , Silva Geovany Jessé Alexandre da , Lima Eduardo Rodrigues Viana de , Barros Filho Mauro Normando Macêdo , Dantas Niara Fernandes Barbosa Formiga
Published: May 2021

Resumo O panorama das problemáticas urbanas evidencia questões relacionadas à diminuição e ao comprometimento da qualidade de vida nas cidades. Nesse sentido, as áreas verdes são importantes variáveis para a avaliação da qualidade vida e do bem-estar urbanos. Sob essa ótica, o trabalho objetiva avaliar a qualidade de vida das pessoas a partir da percepção de frequentadores dos dois parques urbanos mais antigos de João Pessoa, PB: o Parque Solon de Lucena (PSL) e o Parque Zoobotânico Arruda Câmara (Pzac). Para isso, foi desenvolvido o índice de bem-estar em áreas verdes (Ibeav), metodologia proposta e adaptada do índice de bem-estar urbano (Ibeu) com indicadores definidos a partir das dimensões mobilidade e acessibilidade, condições ambientais urbanas, condições habitacionais urbanas, serviços coletivos urbanos e infraestrutura urbana. Os resultados obtidos para o Ibeav foram 0,80155 para o PSL e 0,7716 para o Pzac, que indicam boas e médias condições de qualidade de vida, respectivamente. Assim, por meio da metodologia aplicada nos dois parques urbanos, foi possível identificar as dimensões e os indicadores que contribuem para ampliar e/ou reduzir o índice de qualidade de vida de cada espaço avaliado.
Influência das dimensões dos descolamentos de revestimentos cerâmicos na avaliação com termografia de infravermelho
Authors: Tanaka Diandra , Pavon Elier
Published: May 2021

Resumo A termografia de infravermelho constitui atualmente uma importante ferramenta nas inspeções de edifícios, principalmente na identificação e no diagnóstico de patologias em revestimentos argamassados e cerâmicos. No caso da avaliação de revestimentos cerâmicos com termografia de infravermelho, verifica-se que existem ainda muitas dúvidas em relação ao comportamento do Delta T, principal parâmetro utilizado na análise das patologias nos termogramas, devido à influência do tipo e das dimensões das manifestações patológicas estudadas com essa técnica. Nesse contexto, o presente estudo analisou a influência das dimensões de descolamentos em revestimentos cerâmicos na avaliação termográfica. Para tal fim, foi construído um protótipo de alvenaria com revestimento cerâmico onde foi simulada a presença de descolamentos, sendo o protótipo avaliado em ambiente externo em diferentes orientações solares, num período de 4 dias em 3 anos consecutivos. Os resultados mostraram que os máximos valores de Delta Tna inspeção termográfica foram obtidos nos momentos de máximo crescimento da temperatura da superfície revestida nas quatro orientações solares. Após a análise estatística, concluiu-se que diferenças na largura e, consequentemente, na área dos defeitos terão maior probabilidade de ser detectadas, o que facilita a avaliação do desempenho de sistemas de revestimento cerâmico externos com a termografia de infravermelho.
Potencial de mucilagem do cacto xique-xique como tratamento superficial para blocos de terra comprimida
Authors: Nóbrega Ana Beatriz Egypto Queiroga da , Melo Aluísio Braz de
Published: May 2021

Resumo As construções com paredes de terra destacam-se por suas propriedades higrotérmicas, que contribuem para a regulação desejável entre temperatura e umidade dos ambientes. Por outro lado, tais alvenarias estão sujeitas às manifestações patológicas, devido à ação da água das chuvas. O presente artigo avalia a eficiênciado uso da mucilagem do cacto xique-xique (Pilosocereusgounellei) como tratamento superficial para paredes com blocos de terra comprimida (BTC). O objetivo é obter uma película protetora contra chuva, mas permeável ao vapor de água. Os ensaios realizados com corpos de prova cúbicos, extraídos de BTCs, possibilitaram comparações entre o tratamento proposto (TX), com diferentes concentrações de mucilagem, e uma resina acrílica impermeabilizante comercial (TR), tendo como controle amostras sem tratamento superficial (TC). Os resultados de absorção de água por capilaridade mostraram que a amostra TX com concentração 1:1 obteve comportamento similar à amostra TR, visto que, após 60 minutos de ensaio, TR, TX1:1 e TC tiveram um acréscimo de massa de 0,3 g/cm², 0,5 g/cm² e 1,4 g/cm², respectivamente. A permeabilidade ao vapor de água para TX1:1 foi 5% maior do que TR e 6% menor do que TC. Após ensaios de calor e choque térmico com pequenas paredes, as amostras TX1:1 tiveram desempenho satisfatório.
Caracterização morfológica do agregado leve de argila expandida brasileira com utilização do AIMS
Authors: Nunes Júlio Jorge Braga de Carvalho , Teixeira Ana Maria Abreu Jorge , Saraiva Rebeca Montenegro Dias de Carvalho
Published: May 2021

Resumo Devido ao formato excessivamente arredondado da argila expandida (AE), dados relativos à angularidade, à esfericidade e à textura superficial podem auxiliar no entendimento da relação desses fatores com as propriedades do concreto no estado fresco, como trabalhabilidade e fluidez. Esta pesquisa buscou caracterizar a AE quanto à morfologia e compará-la com as particularidades do agregado convencional por meio da utilização do equipamento Aggregate Imaging Measurement System (AIMS). Os resultados indicam que a caracterização morfológica dos agregados graúdos convencionais (brita 0 e brita 1) apresentam angularidade subarredondada e esfericidade moderada em ambas as partículas, já a textura superficial é rugosa e áspera, respectivamente para a brita 0 e brita 1. Para os agregados graúdos de AE brasileira AE 2215 e AE 1506, as características morfológicas como a angularidade e a textura superficial foram definidas como arredondadas e polidas, respectivamente, em ambos os grupos. No entanto, houve diferenciação quanto à esfericidade, que é alta para a AE 2215 e moderada para a AE 1506. Comparativamente ao grupo de agregados convencionais, o agregado leve graúdo de AE brasileira indica partículas mais arredondadas, com média-alta esfericidade e textura superficial mais lisa.
Influência da densificação da sílica ativa nas propriedades de materiais cimentícios
Authors: Fraga Yuri Sotero Bomfim , Soares Lucas Martins Gontijo , Capuzzo Valdirene Maria Silva
Published: May 2021

Resumo A sílica ativa é comercializada na forma densificada (SD), quando submetida ao beneficiamento por aglomeração das partículas para reduzir seu volume durante o transporte, ou não densificada (SND), quando esse processo não ocorre. Dessa forma, esta pesquisa tem como objetivo avaliar se a densificação da sílica ativa pode influenciar nas propriedades dos materiais cimentícios. Para isso, foi verificado o efeito da substituição de 10% do cimento Portland CPV-ARI pelas sílicas densificada e não densificada. Foi realizado o ensaio de resistência à compressão dos microconcretos aos 1, 3, 7, 14 e 28 dias. Para explicar o comportamento mecânico dos microconcretos, foram realizados os ensaios de difração de raios X (DRX) e microscopia eletrônica de varredura (MEV) com espectroscopia por dispersão de energia (EDS) nas pastas de cimento. Devido ao menor tamanho das partículas e à maior superfície específica da SND em comparação com a SD, houve alteração na microestrutura das pastas de cimento. A SND proporcionou maior consumo do hidróxido de cálcio (CH) e menor relação cálcio/sílica (Ca/Si) da matriz cimentícia, resultando em maior resistência à compressão do microconcreto com SND em relação à SD. Dessa forma, conclui-se que a SND é mais eficaz quando utilizada na produção de materiais cimentícios.
Estado do conhecimento acerca de especificações técnicas e normativas para agregados reciclados de RCD
Authors: Alberte Elaine Pinto Varela , Handro Julia Barretto
Published: May 2021

Resumo No Brasil existem normas específicas que estabelecem diretrizes para uso de agregados reciclados em pavimentação e em concreto sem função estrutural. Contudo, pelo fato de a reciclagem de resíduos de construção e demolição (RCD) ainda ser considerada uma atividade recente no país quando comparada a países mais desenvolvidos, torna-se compreensível haver lacunas a respeito da normatização desses materiais, bem como resistência por parte da indústria da construção em utilizá-los. Este estudo realizou um levantamento estruturado sobre produção técnica e normativa existente nos cenários nacional e internacional para o uso de agregados reciclados. Foram consideradas especificações técnicas, normativas e de controle de qualidade de 12 países, incluindo o Brasil. Uma análise sistemática das normas permitiu a apreciação da produção técnica e normativa internacional suplementada com uma breve comparação com a última revisão nacional sobre o tema. Isso possibilitou o delineamento de sugestões para diretrizes técnicas e normativas para o uso desses materiais no país. Espera-se que os resultados deste trabalho apoiem o setor na evolução de especificações técnicas relacionadas e produzam contribuições exitosas em caráter prático para consolidar a reciclagem de RCD do país.
AUTORIA EM REDE E A PRODUÇÃO TEXTUAL NO CONTEXTO COLABORATIVO DOS FÃS
Authors: Lima Daniella , Mercado Luís Paulo , Versuti Andrea
Published: May 2021

Este artigo analisa a produção textual na perspectiva da autoria em rede, enfatizando o contexto de produção dos fãs no site Spirit Fanfics e Histórias. Ao estudar o site, discutimos conceitos acerca da cultura digital e da autoria em rede, bem como suas implicações e usos na Educação. Os objetivos do artigo são: caracterizar o conceito de autoria em rede, descrever os conteúdos disponíveis no site Spirit Fanfics e Histórias, analisar como acontece o processo de construção das estórias e como proporciona aprendizagem aos sujeitos. Para isso, optamos pela pesquisa netnográfica, por meio da qual analisou-se o site a partir da observação participante para construção dos dados e a metodologia qualitativa quanto aos procedimentos, enfatizando as relações interações possíveis entre os sujeitos do site. Além disso, aplicamos questionários online, a fim de reunir informações acerca dos sujeitos participantes em relação ao cenário da produção de fanfics e à autoria em rede. Como resultados, destacamos que: a) a autoria em rede e a colaboração presentes nas fanfics conduzem os sujeitos ao engajamento na produção de narrativas ficcionais; b) por meio do engajamento os sujeitos constroem conhecimentos acerca do conteúdo produzido.
Tribological performances of a novel biopolymeric material HD-HA for hip joint implants
Authors: Das Shankar Swarup , Chakraborti Prasun
Published: May 2021

For most modern hip joint implants, metal-on-plastic pairs are preferred over metal-on-metal ones, where cobalt (Co)–chromium (Cr) alloy and ultrahigh-molecular-weight polyethylene (UHMWPE) are commonly used as the femoral head and socket, respectively. In such implants, the durability of the UHMWPE component is not up to the mark due to severe wear. This study presents better tribological performance of a novel biopolymeric material coded as HD-HA prepared from high-density polyethylene (HDPE) and hydroxyapatite. In the first part, wear tests showed specific wear rates of 4.85 × 10−6and 5.27 × 10−6(mm3/N)/m for HDPE and UHMWPE, respectively, whereas the specific wear rate was 3.19 × 10−6(mm3/N)/m for HD-HA. Comparison revealed that HD-HA had a 60–65% lower wear rate than the others. Similarly, in the second part, the friction coefficient is found to be 0.23 and 0.11 for UHMWPE and HDPE, respectively, and 0.06 for HD-HA, which shows a 20–50% decrease in frictional values. Atomic force microscopy images revealed that the rough peaks were 296, 486 and 1100 nm for HD-HA, HDPE and UHMWPE, respectively, whereas the scanning electron microscopy images showed fewer loose particles around the worn HD-HA surface. This shows that HD-HA has a smoother surface, and based on the overall tribological performance, it should be preferred for the acetabular component of hip joint implants.
Characterization of TiO2 fabricated by the cost-effective CBD method
Authors: Jasmitha Kaza , Kashyap Kaza Desowja Hanumath Sai , Pasumarthi Mallikarjuna Rao , Avadhani P S
Published: May 2021

The current paper is about the descriptions of the topography and compositional, optical and structural characteristics of cost-effective and non-toxic titanium dioxide (TiO2) thin film deposited using the chemical bath deposition (CBD) method on a glass substrate for the transparent conductive oxide layer in solar cell application. The specimens were characterized by various instrumentation techniques such as X-ray diffraction (XRD), ultraviolet (UV)–visible–near-infrared spectrometry and field emission scanning electron microscopy (FESEM) coupled with elemental analysis (energy-dispersive X-ray spectroscopy). The XRD results indicated a perfect polycrystalline titanium dioxide phase. UV spectrophotometry of the titanium dioxide thin film found a bandgap of 3.2 eV. At a glance, the morphology of the film by FESEM shows that the deposited film is crack-free and is deposited uniformly. The thickness of titanium dioxide is measured to be approximately equal to 100 nm.
Analysis of the gasket geometry for sealing glass lamination autoclaves
Authors: Beyçayırı Cengiz , Parlar Zeynep
Published: May 2021

Nowadays, autoclaves are widely used for industrial applications such as composite material production, laminated glass production and rubber industry. An autoclave is pressurized and heated up according to its special recipes, which are prepared by considering the technical specifications of the interlayer material and the types and thickness of the glass sheets. During the entire laminated glass production period, the gasket on the autoclave door provides sealing and it must not damage the steady air circulation inside the autoclave. In the present study, the sealing of a glass lamination autoclave was investigated numerically. In order to perform finite-element analysis (FEA), a simplified finite-element model was created by considering both the gaps between the autoclave door and its housing and the geometry of the gasket. In general, hyper-elasticity-based gasket materials were used for glass laminating autoclaves. A Mooney–Rivlin hyper-elastic material model was used for this study. In this study, nine different gasket geometries were designed and finite-element method (FEM) analyses of the gaskets were carried out by using the Ansys Workbench software. FEM analyses were performed at 13 bar operating pressure. The results were compared in terms of deformation of the gaskets and von Mises equivalent stress. The most suitable gasket geometry was determined according to the simulation and FEA results.
Development of antibacterial medical textile materials applied with aromatic oil
Authors: Koyutürk Ahmet , Soyaslan Devrim Demiray
Published: May 2021

Interest in medicinal and aromatic plants is increasing day by day with the increasing demands of people for natural materials. Because these plants are both environmentally friendly and antiallergenic, they are widely used in many fields, one of which is the medical textile industry. This publication is the first part of a study designed in two parts. The first part includes working with tea tree and rosemary, and the second part, with clove and cinnamon oils. In this paper, based on the antibacterial effects of tea tree and rosemary plants, which are widely grown in Turkey, the application of the oils of these plants to non-woven medical textile material and the antibacterial effectiveness of the post-application material are discussed. The impregnation–curing–drying method, which is a simple and economical one, was chosen for the application process. In this study, Staphylococcus aureus and Escherichia coli bacteria were preferred. Antibacterial activity tests of the applied textile material were carried out according to the AATCC 147 method. As a result of the study, it has been ensured that the application process on the bandages was carried out successfully and the bandages applied with the oils of tea tree and rosemary show antibacterial activity.
Green supplier selection in steel door industry using fuzzy AHP and fuzzy Moora methods
Authors: Arslankaya Seher , Çelik Miraç Tuba
Published: May 2021

Increasing customer satisfaction by producing quality products at a low cost is an important issue for businesses. For this reason, companies have to choose suppliers that will best meet their and their customers’ requests. Besides, many factors such as increasing the importance given to the environment, increasing the recycling rate of the products and ensuring sustainability are in an important position in the selection of suppliers. This has created the concept of green supplier selection. Businesses now prefer suppliers that carry out production considering green factors. In this study, green supplier selection was performed for a company producing steel doors. Alternative suppliers of the steel sheet raw material used in the company and the green criteria taken into account when choosing these suppliers were determined. Afterward, the company’s managers were interviewed and an evaluation and comparison of criteria and suppliers were carried out. The fuzzy analytic hierarchy process method was used to determine the weights of the determined criteria. The fuzzy multi-objective optimization by ratio analysis method was used in the evaluation and selection of suppliers. As a result of the study, the suppliers were listed as T1 > T2 > T4 > T5 > T6 > T3. It was decided that the best supplier for the company is the T1 supplier.
The ANN analysis and Taguchi method optimisation of the brake pad composition
Authors: Şeker Muammer , Mutlu İbrahim , Aysal Faruk Emre , Atli İsmail Sinan , Yavuz İbrahim , Ergün Yelda Akçin
Published: May 2021

In this study, the Taguchi optimisation technique was utilised to establish the composition of an asbestos-free brake pad. As a result of optimisation outputs, 18 various compositions were obtained. The produced specimens according to outputs were subjected to friction assessment and screening tests to evaluate their average friction coefficient and friction surface temperature. By assessing the results, the composition of brake pads, which can be used in vehicle brakes, was determined. The experimental results were also examined by variance analysis to demonstrate effect factors. Furthermore, when the test results were evaluated in terms of the friction coefficient, wear rate and temperature of the brake disc, a high coefficient of friction, a moderate wear rate and an acceptable temperature of the brake disc were obtained in sample 13. The composition of sample 13, which has the highest friction coefficient, is 3 g brass powder, 9 g cashew, 9 g carbon fibre, 9 g copper dust and 9 g graphite. Lastly, the average friction coefficients of brake pads were estimated through artificial neural network (ANN) analysis. With respect to the results, it was discovered that the generated ANN model promises a high ratio estimation capacity.
Do the Linguistic Styles of Hotel’s Tweet Message Affect the Customer Engagement?
Authors:   The Tourism Sciences Society Of Korea, Lee Yun-Hye , Lee Jung-Won , Park Cheol
Published: May 2021

Social media is used as a major marketing strategy for companies as a marketing tool to increase customer engagement. Social media marketing strategies are considered important in the context of communication as well as nature of the messages. Therefore, marketing communication through social media requires continuous content management and brand response strategies. This study analyzed the effect of the linguistic styles of the global chain hotel Twitter content on customer engagement based on the speech act theory. In addition, the differences in linguistic styles that affect customer engagement were discussed using replies to content as a moderating variable as a brand response strategy. Postings from official Twitter accounts operated by global chain hotels were collected, and the linguistic styles of Twitter posts were analyzed using LIWC 2015 software an automated text analysis program. Poisson regression analysis was used to analyze the relationship between customer engagement and linguistic styles. It was found that there is a difference in the linguistic styles of the social content strategy and the social monitoring strategy that affect customer engagement. The study expands the knowledge of existing research on corporate strategy and customer engagement using social media, and provides practical implications for the role of social media as a marketing communication strategy.
A Focus on the Restaurant Social Servicescape on the Solo Dining Satisfaction: Moderating Role of Restaurant Familiarity
Authors:   The Tourism Sciences Society Of Korea, Im Soo-Yeon , Seo Sun-Hee
Published: May 2021

Recently, the changes of personalized lifestyle, solo dining became one of the culture, and in terms of restaurants side it became an important fact to attract solo diners. This study explored the relationship between crowding, negative response from other diners, interactional fairness from employees, and solo dining satisfaction as well as moderating effect of restaurant familiarity. The survey was conducted in September 2020 among Korean consumers who have dined alone within the last three months. A total of 403 consumers participated in this study. The results of the structural equation model analysis suggested that the crowding level of the restaurants was identified as the predictor of the negative response from other diners, while it had no significant influence on the interactional fairness from employees. The influence of the negative response from other diners and the interactional fairness from employees on solo dining satisfaction were also verified. Multi-group analysis results found the moderating effect of familiarity between crowding and the negative response from other diners. Specifically, crowding had a significant impact on the negative response from other diners for solo diners with low familiarity, whereas crowding did not show any significant effect on the negative response from other diners for solo diners with high familiarity. This study contributes to enhance understanding of solo dining experience and provide beneficial information to relevant practitioners by verifying the role of social servicescape and restaurant familiarity in the solo dining experience.
MUSIC-INDUCED HEARING LOSS IN SCHOOLAGE CHILDREN: DATA FROM A QUESTIONNAIRE,
OTOLOGICAL EXAMINATION, AND AUDIOMETRY
Authors: Sulkowski Wieslaw , Kochanek Krzysztof , Jalocha-Kaczka Anna , Owczarek Kalina , Olszewski Jurek
Published: May 2021

Objective

The study sought to evaluate the prevalence of hearing disorders in school-age children due to exposure to loud music.

Material and Methods

A sample of 700 pupils from grammar and secondary schools in Poland, aged 13–18 years, were given otological and
audiometric examinations. A questionnaire was used to gauge the frequency and duration of visits to discotheques or pop/rock music concerts and the use of personal audio players (PAPs).

Results

The final sample consisted of 643 subjects, after excluding 57 pupils because of middle ear disease or other auditory pathology. They
were divided into three groups according to the findings of the questionnaire: 131 not exposed (never attended discos/concerts or used PAPs);
169 mildly exposed (visits to discos/concerts once per month, PAPs 1–3 hours per day for 1–3 times per week); and 343 heavily exposed (discos/concerts 1–2 times per week, PAPs 4–7 hours per day for 4–7 times per week). In exposed groups a notched hearing loss of 25–60 dB at
4 or 6 kHz was identified in 18 pupils with mild exposure (10.7%) and in 56 with heavy exposure (16.3%). Of those showing the notch, 24
subjects (32.4%) complained of tinnitus.

Conclusions

Our study confirms that the apparently “beautiful noise” of loud music carries with it the risk of hearing loss and tinnitus, and
so hearing screening and the promotion of healthy listening habits in school-age children are recommended.
EXTENSIVE CRANIOFACIAL INJURY CAUSED BY
CIRCULAR SAW
Authors: Kuśmierczyk Krzysztof , Jałocha-Kaczka Anna , Wacławek Magdalena , Mielczarek Marzena , Olszewski Jurek
Published: May 2021

Introduction

Craniofacial injuries are a complex clinical issue and their treatment requires multi-specialty intervention. We present the case
of a man hospitalized at the Department of Otolaryngology, Laryngological Oncology, Audiology and Phoniatrics, Medical University in Lodz,
Poland, due to extensive craniofacial injury caused by a circular saw.

Case report

A 61-year-old male patient (Z.K.) was transported by ambulance to the Emergency Department of the University Clinical Hospital, Military Memorial Medical Academy, Lodz, due to extensive craniofacial injury. The patient was conscious and remembered the course of the event. He exhibited stable respiratory and cardiovascular function and was in logical verbal contact. A CT scan revealed fracture of
the anterior wall of the frontal sinus, with dislocation of fragments to the area of the piriform aperture on the right side, and a hematoma in
the right frontal and maxillary sinus. The diagnostic and therapeutic management was successful, with the patient discharged from hospital
on the 9th day in good general condition. The external appearance after treatment was fully satisfactory for the patient. There were no inflammatory complications in the healing of wounds and no evidence of lagophthalmos, facial nerve paresis, ocular complications, or excessive lacrimation which could result of nosolacrimal duct obstruction. The success of the therapy, both functionally and aesthetically, was achieved
due to quick diagnosis and appropriate surgical and pharmacological treatment, including broad-spectrum antibiotics.

Conclusions

In the case of extensive craniofacial injuries, rapid diagnosis and implementation of appropriate, highly specialized multidisciplinary treatment is needed. Patients such as this should be referred to the highest level centers.
EFFECT OF SOUND INTENSITY ON LEVEL
OF ACTIVATION IN AUDITORY CORTEX AS
MEASURED BY FMRI
Authors: Wolak Tomasz , Ciesla Katarzyna , Wojcik Joanna , Skarzynski Henryk
Published: May 2021

Background

Despite rapid developments in fMRI, there is still ongoing debate on the optimal paradigm for evaluating the level of auditory cortex activation.

Material and Methods

A number of modern neuroimaging methods can be used to assess brain responses to acoustic stimulation,
but new paradigms are still needed. Here the sparse fMRI approach is used to examine frequency-specific activation in auditory cortex in 12
normal hearing individuals.

Results

The size of activation expanded with increasing sound intensity and decreasing sound frequency. At the same time, the main site
of frequency-specific activation remained the same across intensities, indicating fixed tonotopic organization. The findings of the study are
explained in terms of basilar membrane phenomena such as the travelling wave pattern and spread of activation.

Conclusions

Stimulation levels of at least 60 dB are necessary in order to obtain robust maps of group activation in auditory cortex.
HEARING SCREENING OF SCHOOL CHILDREN
IN THE WARMIAN-MASURIAN VOIVODESHIP
Authors: Skarżyński Piotr , Łuszcz Cezary , Świerniak Weronika , Tarczyński Krzysztof , Matusiak Monika , Włodarczyk Andrzej , Skarżyński Henryk
Published: May 2021

Background

Hearing screening is an important part of prevention. It allows early detection of hearing disorders, allowing treatment to begin early and eliminating or minimizing negative consequences. Children with hearing impairment often experience delayed speech development and cognitive abilities, which can result in learning disabilities and reduce school progress. Since 1999, the Institute of Physiology
and Pathology of Hearing in Poland has provided a hearing screening program for school-aged children in the country. The main aim of the
program is the early detection of hearing disorders, especially in children starting school, and to increase the awareness of parents and the
school more generally about hearing problems

Material and Methods

There were 6,297 children from the Warmian – Masurian Voivodeship enrolled in the program (3,050 girls; 3,247
boys) from grades 1 to 6 and aged between 6 and 13 years. Hearing screening was conducted over two time-frames: from September 2014 to
June 2015, and from September 2015 to June 2016. Most of the children were from the first group: 81.1% of all pupils examined. Each child
was assessed by pure tone audiometry and a questionnaire addressed to parents.

Results

Based on the result of the audiogram, screening showed that hearing impairment was found in 1169 (18.6%) of the examined pupils.
Of these, 64.5% (750 children) had single-sided hearing loss

Conclusions

The results confirm that awareness of hearing disorders in Poland is low. Many school-age children have hearing loss, but it
is often not detected by caregivers and teachers. Even small hearing losses may cause difficulties in communication, emotional reactions,
or learning. Early detection of hearing disorders is therefore crucial. A screening program can quickly identify patients with hearing loss
and implement appropriate treatment and rehabilitation as soon as possible, actions that can improve the quality of life of the children
and their families.
ASSESSMENT OF CLINICAL UTILITY OF
PHONEMICALLY BALANCED WORD LISTS FOR
ADULT SPEAKERS OF KANNADA
Authors: Manjula Puttabasappa , Antony Jawahar , Kumar Keelara , Geetha Chinnaraj
Published: May 2021

Objective

The present study aimed at standardizing the phonemically balanced word lists in the Kannada language for adults developed by
Manjula et al. (2015).

Materials and Methods

Forty individuals with different degrees of sensorineural hearing loss were enrolled for the study. The word lists developed by Manjula et al. (2015) were presented monaurally under headphones at 40 dB SL (ref: PTA) in quiet. The number of correctly identified words was calculated for each list. The scores of all the lists in each group were statistically analyzed.

Results

The results revealed that there is list equivalency within each group on repeated measures ANOVA. The statistical analysis also revealed that the speech identification scores reduced significantly with an increase in the severity of hearing loss on MANOVA.

Conclusions

The lists developed by Manjula et al. (2015) are sensitive to different degrees of hearing loss. Hence, the lists can be a good speech
identification tool for testing adults with hearing loss in routine speech identification testing, assessing hearing aid benefits, and for research
purposes where multiple word lists are required.
AN ADHESIVE BONE CONDUCTION SYSTEM,
ADHEAR, A NEW TREATMENT OPTION FOR
CONDUCTIVE HEARING LOSSES
Authors: Westerkull Patrik
Published: May 2021

The adhesive bone conduction concept described here is a completely new type of non-surgical bone conductor. It is based on a disposable
adhesive adapter, to which an ear-level audio processor can be connected and disconnected without removing the adhesive adapter positioned
on the skin behind the ear. The device, called Adhear, is worn without any pressure against the skin and does not require any bulky retention
arrangements, and therefore offers a comfortable and aesthetic solution. Adhear has been reported to offer high patient satisfaction, excellent
skin acceptance, and an audiological stimulation comparable to that of a softband or headband arrangement. The adhesive adapters are usually
worn for 3 to 7 days before changing to a new one and the adapters can also be worn when sleeping or taking a shower. Adhear offers a new
user-friendly, non-surgical bone conduction stimulator suitable for bilateral or unilateral conductive hearing losses and possibly also for SSD.
AUDITORY PROCESSING IN CHILDREN WITH
CHRONIC SUPPURATIVE OTITIS MEDIA
Authors: Noel Augustina , Alexander Arun , Sreenivasan Anuprasad , Palani Saravanan
Published: May 2021

Background

Chronic suppurative otitis media (CSOM) in early childhood can lead to auditory processing disorders in later life even though
the hearing sensitivity has returned to normal. There is a dearth of studies in the literature that have evaluated the auditory processing in
children with later onset of CSOM.

Material and Methods

Auditory processing was measured in terms of frequency discrimination (difference limen frequency, DLF), intensity
discrimination (difference limen intensity, DLI), and gap detection threshold (GDT) in 15 children with CSOM of mean age 13 years as well
as in 15 normal hearing children of comparable age.

Results

An independent t-test was used to gauge the significance between the groups for all three parameters. There was a statistically significant difference (p < 0.05) for all three.

Conclusions

The results confirm that conductive hearing loss impairs the auditory processing abilities of children with CSOM, even in those
aged 9 to 15 years. These findings highlight the importance of early intervention in cases of CSOM.
ANTERIOR COURSE OF THE SIGMOID SINUS
AND USE OF A LIFT WITH THE BONEBRIDGE
IMPLANT: CASE REPORT
Authors: Skarzynski Henryk , Ratuszniak Anna , Osinska Kamila , Skarzynski Piotr
Published: May 2021

Background

The Bonebridge bone conduction implant (BCI) is used in cases of conductive, mixed hearing loss and single-sided deafness.
The system can be implanted in the mastoid process pre- or retrosigmoidally. Presigmoid placement tends to reduce the number of subsequent implantations. The use of new refinements – such as spacers called BCI lifts, which facilitate adjustment during surgery – broadens the
applicability of Bonebridge to a larger group of patients.

Case report

This case study presents a 58-year-old female patient with bilateral chronic otitis media who had undergone several operations
in the past and who qualified for a Bonebridge implant. During surgery, a lift for the lower screw of the bone-conduction floating mass transducer (BC-FMT) was used because of an anterior course of the sigmoid sinus. We analysed hearing results before and 3 months after the surgery. The results indicated stable bone conduction thresholds and improved hearing and speech recognition after implantation.

Conclusions

The Bonebridge system is an effective treatment for hearing loss caused by chronic otitis media in cases where classic otosurgery cannot be performed. Difficult conditions during surgery, as caused by an anterior sigmoid sinus, can limit the use of the Bonebridge.
In such cases use of a lift can widen implantation options.