bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigação Educacional e Investigação Qualitativa:
Authors: De Castro Paulo Alexandre , Guerra Cecília , Santoro Perseu Angelo , Barros Victor F A
Published: December 2023

Este número especial do periódico científico “Brazilian Journal of Education, Technology and Society” (BRAJETS) apresenta o conteúdo dos onze trabalhos selecionados pela comissão científica/organizadora do Congresso Ibero-Americano em Investigação Qualitativa (edições de CIAIQ2022 e de CIAIQ2023). A parceria entre o CIAIQ e o BRAJETS visa a promoção e difusão da investigação qualitativa junto à comunidade científica nas áreas alvos da Revista, que são: educação, tecnologia, medicina, sociedade e internacionalização de programas de pós-graduação. Para compor este número especial selecionou-se, como tema central, a “Investigação educacional e investigação qualitativa: potencialidades e desafios na contemporaneidade”. Com o objetivo de proporcionar qualidade e representatividade dos artigos publicados neste periódico, certificamo-nos de que todos eles passassem por um processo de revisão double-blind, por meio de análise criteriosa de uma comissão científica composta de pesquisadores experientes, qualificados e bastante ativos em suas respectivas áreas de atuação. Face ao exposto, convidamos todos a uma boa leitura deste número especial e que o mesmo possa contribuir com inspirações e ideias para a redação e execução, sejam de investigações e/ou de trabalhos futuros.
Inclusion in Music:
Authors: Moreno Davys Espíndola , Moreira António , Tymoshchuk Oksana , Marques Carlos
Published: December 2023

To promote the attendance of children with Special Health Needs in Arts Education Programmes of Music in Portugal, we conducted six awareness workshops. The aim of this study is to evaluate the perceptions and degree of satisfaction of the Participants regarding the Trainer and the contents presented. An Evaluation Questionnaire was developed and validated with closed and open questions, whose answers were subjected to the content analysis technique. In total, 156 answers to the questionnaire were subject to analysis, always safeguarding anonymity and all ethical issues involved. As a result, the Trainer and the Training were evaluated as Very Good. Most of the Participants are over 41 years old and few are involved in actions related to Special Education. It is concluded that there is a need to develop further specific training that promotes collaborative work and good practices towards inclusion. It is also important the implementation of curricular adaptations, enabling spaces, the use of support Technologies/Products/Software, adapted musical instruments and ADMIs to be used in the teaching/learning of music. We suggest the development of more studies on this theme as well as the offering of Long-Term Training Courses that promote music for all.
Utilização e Valorização das Perguntas dos Estudantes:
Authors: Mertins Simone , Amaral-Rosa Marcelo , Lima Valderez
Published: December 2023

O objetivo foi compreender a utilização e valorização das perguntas na sala de aula por parte dos professores que atuam no ensino fundamental. É uma pesquisa de abordagem qualitativa. O corpus de análise é composto por extratos de entrevistas semiestruturadas realizadas com seis professores de Ensino Fundamental de uma escola pública da região metropolitana de Porto Alegre/RS, Brasil. Os dados foram analisados por meio da Análise Textual Discursiva. A análise gerou 390 unidades de sentido, das quais emergiram onze subcategorias e três categorias finais: i) a utilização das perguntas para auxiliar o processo de aprendizagem; ii) a utilização das perguntas para auxiliar o processo de ensino; e iii) a utilização das perguntas para facilitar o desenvolvimento da aula. As categorias indicam que os professores reconhecem o valor das perguntas dos estudantes para a aprendizagem. No entanto, apresentam limitações para ensinar por meio da pergunta. Esses resultados ressaltam a importância de valorizar as perguntas dos estudantes nas aulas. Acredita-se que tal ação, além de contribuir para o aperfeiçoamento da prática docente, possa diminuir a lacuna existente entre os conhecimentos escolares e as demandas da sociedade.
Curadoria Digital em Software de Análise Qualitativa:
Authors: Silva Katia Alexandra Silva , Costa António Pedro , Pinto Sandro Teixeira
Published: December 2023

O interesse de pesquisadores pelas abordagens de investigação qualitativa, no contexto digital, tem suscitado problemas relacionados à gestão, codificação, compartilhamento de dados, entre outros aspectos, os quais podem ser aplicados à utilização de Software de Análise Qualitativa. No intuito de buscar soluções para tal problemática, o presente estudo realizou uma formação de pesquisadores para curadoria digital em Software de Análise Qualitativa. Para dar  suporte a essa formação escolheu-se o  modelo  de  curadoria  de  conteúdo  digital, assim como o Digital Competence Framework for Educators. A partir desse contexto, o objetivo da pesquisa reside em analisar as relações estabelecidas entre as fases da proposta de formação de pesquisadores para curadoria digital em Software de Análise Qualitativa. Para alcançar tal objetivo, adotamos a abordagem qualitativa a partir da articulação de dois pacotes de software, o webQDA e o CHIC. Dessa forma, esse artigo está organizado em três seções, introdução, proposta de formação de curadoria digital em Software de Análise Qualitativa e análise relacional dessa formação. Por fim, as considerações finais, revelam a existência de pesquisadores que relatam sobre as restrições que podem ser colocadas em relação aos dados da pesquisa qualitativa e a utilização de software.
Pesquisa de Design Educacional no Desenvolvimento de uma Inovação Didática de Ciências Naturais:
Authors: Daza-Perez Erika , Niño El-Hani Charbel
Published: December 2023

Baseado no potencial da pesquisa de design educacional (EDR) na elaboração de recursos de ensino e aprendizagem de conteúdo específico situados em contextos reais de ensino, descrevemos detalhes relevantes e refletimos sobre o processo de aplicação de EDR na fase de pesquisa preliminar e no primeiro ciclo da fase de prototipagem, de uma pesquisa cujo objetivo foi identificar características de design de uma seqüência didática para modelagem de termorregulação em vertebrados terrestres usando o videogame educacional Calangos. Através da reflexão, destaca-se a importância da natureza colaborativa do EDR entre pesquisadores e professores, estabelecendo uma relação sinergética entre a pesquisa, o design e o processo de ensino em correspondência com a dinâmica escolar das instituições de ensino.
Integração Ensino-Serviço na Formação em Saúde:
Authors: Yamashita Karen , Quaglio Chirelli Mara , Franco da Rocha Tonhom Silvia , Fernandes Biffe Peres Cássia Regina , Abdel Massih Pio Danielle
Published: December 2023

A criação do Sistema Único de Saúde, o deslocamento do referencial de qualificação para competência, as mudanças no perfil epidemiológico e demográfico com seus desdobramentos nas necessiaddes de cuidado fomentam debates e discussões acerca da mudança curricular para o alcance da formação dos profissionais da área da saúde proposta nas Diretrizes Curriculares Nacionais. Uma das possibilidades tem sido organizar a formação a partir de currículo integrado e metodologias ativas de ensino-aprendizagem. A parceria ensino-serviço tem se mostrado uma estratégia importante para a implementação dessa organização curricular. Dessa forma, torna-se importante compreender como ocorre a negociação/pactuação entre ensino e serviço e o que se conhece sobre a pactuação e contribuições na formação do enfermeiro e do médico. O presente estudo teve como objetvo analisar como ocorrem as pactuações e quais as contribuições na formação do enfermeiro e médico considerando a parceria ensino-serviço. Pesquisa qualitativa realizada com gestores da academia e serviço, preceptores e docentes. Os dados foram coletados por meio de entrevistas semi-estruturada com onze gestores, oito docentes e nove preceptores do serviço. Utilizou-se a análise de conteúdo, modalidade temática no processamento dos dados. Identificou-se que a compreensão sobre o processo de negociação/parceria era mais fortalecido no passado com o envolvimento dos gestores da academia e serviço e há um desconhecimento dos preceptores do serviço sobre assunto. O Contrato Organizativo de Ação Pública Ensino-Saúde (COAPES) é uma estratégia de fortalecimento da parceria, porém, não tem auxiliado na organização da operacionalização. Como potencialidades a inserção precoce dos estudantes nos cenários de prática, corresponsabilização do preceptor com a formação dos estudantes, resolução das necessidades da comunidade e formação dos preceptores do serviço. Portanto, a parceria entre ensino-serviço é essencial na operacionalização da formação com organização curricular integrada e na abordagem dialógica de competência, requerendo dos parceiros disposição para construir novas práticas a partir das pactuações, sendo a educação permanente o espaço para o diálogo e reconstrução a partir da reflexão crítica sobre o trabalho cotidiano.
Um Percurso Metodológico para a Construção de um Dispositivo de Apoio ao Desenvolvimento e Avaliação de Competências Digitais no 1.º Ciclo do Ensino Básico
Authors: Lima de Sousa Emily Ellen , Cruz Elisabete , Albuquerque Costa Fernando
Published: December 2023

Este artigo apresenta o percurso metodológico seguido para a construção de um Dispositivo de apoio ao desenvolvimento e avaliação de competências digitais de alunos do 1.º Ciclo do Ensino Básico. Além dos fundamentos epistemológicos que suportam uma abordagem de cariz intervencionista, assente na tradição pragmática e alinhada com os princípios da Investigação Baseada em Design (IBD), serão explicitados os objetivos que justificam as decisões tomadas no que respeita à instrumentação e aos procedimentos de recolha e análise de dados que caracterizam a originalidade do percurso metodológico desenvolvido no âmbito de uma investigação de mestrado, na área da Inovação em Educação na Universidade de Lisboa. Apesar das limitações experienciadas, conclui-se que o percurso metodológico adotado, além de constituir uma abordagem promissora para a concretização de produtos mais acessíveis para os seus utilizadores finais, também poderá inspirar outros investigadores que se interessem pelo avançar do conhecimento científico em educação mediante a valorização da sabedoria profissional.
Validação de um Questionário para Avaliar as Mudanças Produzidas no Processo Ensino/Aprendizagem Durante a Pandemia do Covid-19:
Authors: Hidalgo Violeta , Arias-Masa Juan , Contreras Vas Juan Ángel , Martín-Espada Rafael
Published: December 2023

Este artigo descreve o processo de validação de um questionário destinado a conhecer a opinião dos alunos sobre as mudanças produzidas no processo de ensino/aprendizagem no ensino superior devido à pandemia de COVID-19. O estudo pretende saber o que mudou no ensino universitário após o confinamento, como o ensino presencial se adaptou ao ensino online durante o confinamento e o que ficou da experiência vivida na nova normalidade. Para esta validação, um grupo de especialistas, pesquisadores e professores de universidades da Espanha e Portugal, especializados em Didática, Tecnologia, Engenharia e Ciências da Saúde, foram selecionados para responder a três perguntas para cada uma das perguntas do nosso questionário a ser validado. Os especialistas validaram se cada uma das perguntas feitas era adequada para o nosso estudo, se a pontuação está adequada e, finalmente, comentários que nos forneça informações para melhorar o questionário a ser validado. Os dados recolhidos neste processo de validação foram analisados ​​qualitativamente com o apoio do software webQDA e quantitativamente com o software SPSS, permitindo acrescentar ou modificar algumas questões, com o objetivo de obter um questionário validado a enviar aos alunos do Universidade da Extremadura.
PERCEPÇÕES DOS FORMADORES E FORMANDOS DO PROGRAMA INTEGRADO DA REFORMA DA EDUCAÇÃO PROFISSIONAL EM MOÇAMBIQUE
Authors: Maculuve Sansão Fabião
Published: December 2023

Este estudo exploratório e descritivo, seguindo uma abordagem qualitativa procura identificar e descrever as inovações da reforma da educação profissional em Moçambique com base em entrevistas a sete profissionais da área, seleccionados por conveniência. A pesquisa teve lugar no Instituto Industrial de Maputo, uma Instituição de Ensino Técnico Profissional, de nível médio e do ramo industrial, localizada na capital da República de Moçambique. Os dados recolhidos pelas entrevistas aplicadas aos participantes deste estudo foram sujeitos à análise de conteúdo e as categorias centrais da pesquisa, foram obtidas mediante uma grade mista de categorização. A unidade de análise é constituída por parágrafos e frases das falas dos entrevistados. Ao longo de toda a pesquisa foram rigorosamente observadas as questões éticas e, no fim, fez-se a validação das transcrições das entrevistas pelos entrevistados. Os resultados obtidos retratam as inovações introduzidas no processo da formação, bem como as percepções dos formadores e formandos do programa integrado da reforma da educação profissional em Moçambique. Estas inovações centram-se na política de uniformização, por ter catálogo nacional de qualificações; reconhecimento de experiências profissionais; gestão do ensino técnico-profissional feita por parceiros, entidades privadas e o governo, quando antes a gestão era apenas feita pelo governo.
Construindo a Pesquisa e o Conhecimento com Professores para uma Inovação Sustentável em Educação:
Authors: Luna Diego , Leal da Costa Conceição , Passeggi Maria da Conceição , Sarmento Teresa
Published: December 2023

Os discursos atuais a favor da inovação educativa trazem consigo a emergência de muitos desafios para os professores. O principal objetivo do estudo que serviu de base a este artigo foi explorar a forma como os professores experimentam o impacto dos novos discursos pró-inovação em suas próprias aulas. Para tal, o estudo se baseou na experiência de ensino e investigação pedagógica de um dos autores, que combinou a autoetnografia com outras estratégias metodológicas. Assim, neste texto, em que a metodologia se torna central, adotamos a perspectiva da investigação qualitativa pela importância dada à subjetividade e por considerar inseparáveis as ligações entre vida, experiência vivida e produção de conhecimento. A documentação narrativa da experiência pedagógica e a narrativa da investigação, juntamente com outras fontes documentais complementares, permitiram explorar a performatividade dos discursos oriundos de vários campos, identificar expectativas atuais de professores, depreender suas implicações nas práticas profissionais e na construção do conhecimento que as sustenta. Diante de uma literatura excessivamente indulgente ou alheia ao problema assumido, conclui-se que, atualmente, existe uma estreita ligação entre a inovação educacional, os parâmetros performativos neoliberais e o desenvolvimento do mal-estar dos professores.
A INVESTIGAÇÃO QUALITATIVA ALÉM DO MUNDO ACADÉMICO
Authors: Camalhão Serafim , Palmeira Mota Ferreira Camalhão Maria Isabel
Published: December 2023

A formação lecionada pelas universidades têm por destino formar profissionais que respondam às necessidades da sociedade que integram. Um dos problemas antigos das universidades está em centrarem-se mais para as suas necessidades fechando-se sobre si próprias. Há um distanciamento entre o mundo académico e mundo do trabalho. Quando se termina uma licenciatura, mestrado ou doutoramento, o aluno questiona a utilidade de conteúdos e competências adquiridas na universidade. Esta problemática levou a centrar a atenção e objetivo em mostrar a utilidade de ter conhecimentos e competências nas metodologia, métodos e técnicas qualitativas no mundo do trabalho. Em termos metodológicos este artigo é uma autoetnografia colaborativa composta por dois investigadores: uma professora de Educação Especial que narra o seu trabalho ao longo da carreira; e um outro investigador que no discurso da docente que procura referências a técnicas, métodos e metodologias qualitativas. É uma pesquisa descritiva, narrativa e reflexiva que parte do percurso de vida de uma docente de Educação Especial. As conclusões que se retiraram desta pequena investigação, é que uma investigação social a nível profissional é diferente da académica. Pode ser mais flexível, mais pequena, visa um fim específico. Tudo depende da profissão e organização onde o investigador se insere.
Apparatus and Method for the Assessment of In-plane Anisotropic Liquid Absorption in Nonwoven Fabrics
Authors: Russell S. J. , Mao N.
Published: December 2023

An instrumental method is described that enables real-time measurement of in-plane anisotropic liquid absorption in nonwoven fabrics. The system uses variations in electrical capacitance to monitor changes in the liquid absorbed by a fabric as a function of time. In the computer-integrated system, multiple capacitance transducers are arranged equidistantly around a central point to allow separate measurements in up to eight different in-plane directions. The design features of the system, its theoretical basis and examples of measured results are presented.
INFLUENCE OF FURNITURE COVERING TEXTILES ON MOISTURE TRANSPORT IN A CAR SEAT UPHOLSTERY PACKAGE
Authors: Snycerski Marek , Frontczak-Wasiak Izabela
Published: December 2023

The conditions of heat and moisture transport in a car-seat upholstery package are briefly presented, and the necessity of investigation especially of moisture transport is stressed. Three upholstery packages of different furniture covering textiles have been tested with the use of a measuring system for assessing moisture transport through flat textiles. The factor of absolute humidity changes over time determined on the boundary between the user and the upholstery package is described, and its usability for estimating a package application presented. An analysis of the curves of absolute humidity changes versus time allows us to draw the conclusion that inserting a component which blocks the moisture transport inside a package can disqualify the whole package, irrespective of the quality of the remaining components. Without forced ventilation inside the package, a package with the thinnest furniture covering textile has the best properties.
TEXTILE SLOW-RELEASE SYSTEMS WITH MEDICAL APPLICATIONS
Authors: Breteler M. R. , Nierstrasz V. A. , Warmoeskerken M. M. C. G.
Published: December 2023

In the development of medical drug delivery systems, attention has been increasingly focused on slow- or controlled delivery systems in order to achieve an optimal therapeutic effect. Since the administration of drugs often requires a defined or minimum effective dosage in the human body, more conventional delivery systems such as tablets require relatively high doses, which can result in undesired toxic effects. Subsequent degradation of the drug in the human body will result in a drug concentration below the minimum effective level. Furthermore, there are situations where oral administration is less advisable, such as in cases of prolonged treatment or with people that are forgetful, which again results in ineffective treatment. Textile slow-release systems have the potential to overcome these negative aspects. Drugs containing transdermal patches for ex-vivo applications are already familiar; however, this paper will not deal with such applications, but with more advanced in-vivo textile slow-release systems. Due to enormous progress over the years in the fields of supramolecular chemistry, nanotechnology, and polymer science & technology, a number of promising drug delivery technologies have been developed. This review will focus on the opportunities of textiles bearing cyclodextrins, aza-crown ethers or fullerenes, as well as ionexchange fibres, drug-loaded hollow fibres, textiles treated with nanoparticles and fibres with bioactive compounds in their embodiment. In this paper, the delivery systems will be discussed and compared in terms of biostability, biodegradability, controllability, toxicity, carcinogenicity, interface reactions, material costs and the fabrication process.
DIFFERENCES BETWEEN FLAX AND HEMP
Authors: Wiener Jakub , Kovačič Vladimír , Dejlová Petra
Published: December 2023

Differentiating flax and hemp is a long-time analytical problem, which is becoming more and more relevant with the wider loading of bast fibres. Flax and hemp are very similar fibres in all aspects, and their differentiation is often controversial. In this work, the literature is researched for the classic methods of differentiating these two types of fibres. Additionally, a further to twist discrimination methods (the twist test method and the method using polarised light) were analysed. The method most suitable for practical use was tested on a wide spectrum of fibres and compared with the usual methods.
NOVEL REACTIVE RED DYES
Authors: Matyjas Edyta , Rybicki Edward
Published: December 2023

Dyes with two monochlorotriazine or with two monochlorotriazine and two vinylsulphone reactive groups have been investigated for establishing an enhancement of the dyeability of cotton fabrics. The effect of the diamine bridge linking two chromophore systems on the degree of dye exhaustion from the dyebath and dye bonding with the cellulose fibre was examined. The excellent water solubility of these dyes make them useful in the exhaustion method of dyeing. The kind of diamine used as a bridging group has a significant influence on exhaustion and fixation values. The application of diamine, which assures the chemically linear structure of the dye, affects the increase in the amount of the dye fixed on the fibres. Apart from the derivatives of ethylene-1,2-diamine and phenylene-1,2-diamine, the remaining dyes are characterised by a very high degree of dye exhaustion from the dyebath. The dyes examined can be successfully used for dyeing cellulose fibres by the exhaustion process.
MODELLING THE STRUCTURAL BARRIER ABILITY OF WOVEN FABRICS
Authors: Szosland Janusz
Published: December 2023

Woven fabrics with their full, systematically arranged and non-stochastic structure, are the subject of increasing interest as barriers to fluids, radiation, micro-particles, and micro-organisms. The structure of woven fabrics, which is characterised by inter-thread channels of predetermined shape and location, is especially important. Some procedures for designing channel shape and methods for sealing barrier woven fabrics are presented.
PROCESS-ORIENTED ANALYSIS
Authors: Weber Marin Andrea , Creux Simone , Meyer Urs
Published: December 2023

Abstract

The consistency in logic between a stationary, process-oriented description of the system
and its state-oriented counterpart is an important requirement imposed by automated
manufacturing systems. In the late 1980s, computer-aided software engineering tools
were developed to work with complex software systems. With these, the focus was on
immaterial flows such as data and information. In searching for a method that could
graphically describe complex systems, we developed our new methodology, Process-
Oriented Analysis (POA). We have enriched the basic static diagram types of Structured
Analysis with value and resource flows, and introduce consistent rules for the handling of
resources, costs and data. The dynamic diagram types serve to describe the behaviour of
the system, and lead to the programming of simulations and machine controls. The static
diagram types reveal the structure of the system as flows and processes. The diagrams
are hierarchically structured on several levels of detail, allowing an in-depth analysis of
complex systems with numerous sub-systems. A system optimisation is possible based
on costs or on energy. The dynamic diagrams support plant simulation, real-time
monitoring and control systems, and sustainability models. The dynamic diagrams are
consistent with the static diagrams, and simplify program design and coding.
SELECTING COTTON BALES BY SPINNING CONSISTENCY INDEX AND MICRONAIRE USING ARTIFICIAL NEURAL NETWORKS
Authors: Majumdar Abhijit , Kumar Majumdar Prabal , Sarkar Bijon
Published: December 2023

This paper presents a method of selecting cotton bales to meet the specified ring yarn properties using artificial neural networks. Five yarn properties and yarn count were used as inputs, whereas the Spinning Consistency Index (SCI) and micronaire were the outputs to the neural network models. Bales were selected according to the predicted combinations of SCI and micronaire. The properties of yarns spun from selected bales show good association with the target yarn properties.
THE POSSIBILITY OF LOW-TEMPERATURE PLASMA TREATED WOOL FABRIC FOR INDUSTRIAL USE
Authors: Chi-wai Kan , Kwong Chan , Yuen Chun-wah Marcus
Published: December 2023

In this paper, low-temperature plasma (LTP) treatment was applied to a wool fabric. The LTP-treated wool fabric was tested according to different international standard testing methods, and the results were compared with the industrial requirements (ASTM requirements). It was revealed that the LTP-treated wool fabric did meet industrial requirements. The results of the investigation are thoroughly discussed in this paper.
DISPOSAL OF WOOL SCOURING SLUDGE BY COMPOSTING
Authors: Pearson John , Lu Fen , Gandhi Kimti
Published: December 2023

Abstract

Disposal of wool scouring sludge is becoming more problematical, due to the need to
satisfy environmental legislation concerning what is regarded as hazardous waste, and to
the increasing cost of landfill and the scarcity of landfill sites. Composting the sludge to
produce a safe, saleable product could be a viable alternative.
March 2005, Autex Research Journal Vol. 5, No. 1, p. 55-60
Authors: Mazzuchetti G. , Vineis C.
Published: December 2023

Two kni:ed wool fabrics with the same cover factor, yarn count and twist were used our experiment. The only variable introduced was the mean diameter of the wools, 19.2 μm and 25.6 μm. The aim of the work was to evaluate the effect of proteolyHc enzyme treatment on the pilling behaviour of fabrics, and in parHcular on the yarn structure with different concentraHons of proteolyHc enzyme, and then the pilling behaviour was measured by using the pilling box test. The results obteined show that the proteolyHc enzyme, within given levels of concentraHon, improves the pilling behaviour of the fabrics.
DETERMINATION OF THE TECHNOLOGICAL VALUE OF COTTON FIBRE: A COMPARATIVE STUDY OF THE TRADITIONAL AND MULTIPLE-CRITERIA DECISION-MAKING APPROACHES
Authors: Majumdar Abhijit , Majumdar Prabal Kumar , Sarkar Bijan
Published: December 2023

Abstract

This paper presents a comparative study of the methods used to determine the
technological value or overall quality of cotton fibre. Three existing methods, namely the
fibre quality index (FQI), the spinning consistency index (SCI) and the premium-discount
index (PDI) have been considered, and a new method has been proposed based on a
multiple-criteria decision-making (MCDM) technique. The efficacy of these methods was
determined by conducting a rank correlation analysis between the technological values of
cotton and yarn strength. It was found that the rank correlation differs widely for the three
existing methods. The proposed method of MCDM (multiplicative AHP) could enhance
the correlation between the technological value of cotton and yarn strength.
EXPERIMENTAL STUDY OF MECHANICAL SPLICING
Authors: Hassen Mohamed Ben , Sakli Faouzi
Published: December 2023

Abstract

An experimental design method was used in order to determine the most relevant
parameters as well as the crossing effects to be considered in mechanical splicing. This
approach was applied in order to establish a statistical model to predict the splicing
properties of thick and medium cotton yarns for denim fabrics. This model shows that the
change in the value of drafting has no influence on the properties of the mechanical
splicing. Moreover, high values of untwisting and low re-twisting values improve those
properties. The result proved that in optimal conditions, and in contrast to pneumatic
splicing, the yarn linear density has no influence on the properties of splice. Therefore,
mechanical splicing may be used for a wide range of yarns.
STUDY OF TEXTILE POTENTIAL OF FIBRES EXTRACTED FROM TUNISIAN AGAVE AMERICANA L.
Authors: Msahli Slah , Sakli Faouzi , Drean Jean-Yves
Published: December 2023

Agave Americana L. fibres have quite important textile potential. In this paper, we demonstrate this potential by studying the extraction of these fibres from leaves, their physical properties such as fineness, density and their mechanical behaviour in tensile tests. The intrinsic variability of all these properties is also studied, showing natural maturity and ageing of fibres.
TEXTILE FABRICS AS THERMAL INSULATORS
Authors: Abdel-Rehim Zeinab S. , Saad M. M. , El-Shakankery M. , Hanafy I.
Published: December 2023

In recent times, a wide range of textile materials has been used as thermal insulators in many industrial applications. The thermal insulating properties of textile fabrics depend on their thermal conductivity, density, thickness and thermal emission characteristics. Experiments have been made with the aim of studying heat transfer by conduction through the different types of fabrics used as thermal insulators. 100% polyester and 100% polypropylene nonwoven fabrics are used in this work as case studies. The temperature variation through the selected fabrics is measured under different operating parameters such as densities and inlet temperature. The thermal response and behaviour for the selected fabrics used in this work as thermal insulators are illustrated. The relationship between the thermal conductivity and material density of the selected fabrics is studied. Polyester fabric has higher thermal resistance and specific heat resistance than polypropylene. Fabric thickness has a significant effect on the fabric temperature variations. The results of ?[Anova-two way measurements] are presented for 100% polyester and 100% polypropylene nonwoven fabrics. The temperature variation of the fabric increased with the testing time, and also decreased with the increase of fabric weight up to a certain limit beyond its optimum level. The results show that the selected nonwoven fabrics are suitable for usage as thermal insulators.
ELECTROSPUN NANOFIBERS PREPARED BY TWO METHODS: IN SITU EMULSION POLYMERIZED PVA/NANOTIO2 AND MIXING OF FUNCTIONAL-PVA WITH NANOTIO2
Authors: Seppälä Jukka , Ristolainen Noora , Heikkilä Pirjo , Harlin Ali
Published: December 2023

Abstract

Poly(vinyl alcohol)/nano-sized titanium dioxide (PVA/nanoTiO2) water dispersions were electrospun in order to
prepare networks of polymer composite nanofiber for coating applications. In particular, the effect of the
functionalization of the polymer matrix, coating of the filler particles, and the preparation method of the polymer
dispersions on the nanoparticle distribution along the resulting fibers were studied. The dispersions were prepared
using two different techniques: batch in situ emulsion polymerization and mixing methods. Differently coated
hydrophilic nanoTiO2 particles were used on one hand, and on the other, pure PVA and carboxyl- and silanolfunctionalized
PVAs were used. Dispersion properties were assessed by measuring viscosity and estimating the
degree of homogeneity before electrospinning. The structure of the electrospun fibers was studied using scanning
electron microscopy and elemental analysis. It was observed that the dispersion properties differed substantially
depending on the types of polymer and filler particles used. Electrospinning succeeded in forming continuous
fibers instead of separate droplets with all except one type of PVA/nanoTiO2 dispersions. It was confirmed that
the resulting fibers and droplets contained nanoTiO2 particles. For the in situ polymerized dispersions the filler
distribution in the resulting fibers was strongly influenced by the nanoparticle coating. In the mixing method, the
resulting nanoparticle distribution was affected primarily by the polymer type used, and the role of the nanoparticle
coating was not important.
MORPHOLOGY AND THERMAL BEHAVIOUR OF TEXTILE FIBRES FROM THE HAIR OF DOMESTIC AND WILD GOAT SPECIES
Authors: Vineis Claudia , Aluigi Annalisa , Tonin Claudio
Published: December 2023

The performances and properties of the fine hairs from the coats of several domestic and wild mammals, namely the "speciality animal fibres" used for manufacturing high quality, luxury textiles, are influenced by the domestication process, heritability, hybridisation, nutrition, and life environment. In this work, the fibre morphology and cell structures of fibres from wild, domestic and crossbred goats were studied, with the aim of investigating the relationships with the thermal behaviour of the crystalline fraction of the fibres. Scanning Electron Microscopy investigation confirmed that exposure to thermal excursions and nutritional stresses lead to finer hair, associated with lower rate of growth, yielding strong orientation and elongation of the cuticle cells in the direction of the fibre axis. Transmitted Light Microscopy and Differential Scanning Calorimetry revealed specie-specific differences in the internal structure of the fibre cortex, probably related also to moisture during the process of hair keratinisation.
KINEMATIC MODEL FOR YARN MOVEMENT IN TURBULENT AIR FLOWS
Authors: Jungbecker Philip , Seide Gunnar , Gries Thomas
Published: December 2023

Abstract
In the textile industry a tool is needed that can predict fibre and yarn movement in turbulent air streams. The Institut für Textiltechnik of RWTH Aachen University (ITA) has developed a yarn model that can be used to study the movement of single fibres and yarns in turbulent air flows. The kinematic model is described in this article. Special attention is paid to the aerodynamic forces that determine the flight path of fibres and yarns. The coefficient of drag tangential to the fibre axis ct was studied thoroughly using computational fluid dynamics (CFD). It is shown that the diameter has a strong influence on the wall shear stress. Neglecting this effect for thin fibres can lead to errors in the coefficient of drag of a factor of 500. The turbulence intensity also has an important influence on the boundary layer development, which also determines the coefficient of drag. The assumptions made for the yarn model were tested in an experiment in which yarn flight paths were detected with a high-speed video camera. The comparison to the simulation results confirms the usability of the yarn model.
IMPACT OF THE SPLICER PARAMETERS ON THE SPLICED OPEN-END DENIM SPUNYARNS PHYSICO-MECHANICAL PERFORMANCES
Authors: Jaouachi B. , Sahnoun M.
Published: December 2023

Abstract

In this work, the open end splicer parameters as the compressed air (pressure, P and durations of tearing, Dt),
the fibres feeding during splicing operation (1S10 and EII), and the recalling yarn codes (RI, RII and RIII) were
investigated. In order to evaluate the contribution of the splicing conditions on the open end splice physicomechanical
behaviour, we used the experimental Tagauchi design method. This kind of experimental design
allows us, using simplification method, to reduce the amount of the experiments. To evaluate the splice
appearance, the subjective (the experts notes) method and the objective (referring to a developed Thickness
index value) one are compared. In our experimental field of interest, the results show that the feeding fibres
parameter level increase gives the lowest Thickness index value which means good splice appearance. However,
the compressed air remains the most important parameter because it represents the influential one on both the
strength and the longitudinal characteristics of the spliced open-end spun-yarns (length of splice and the expert
judgments).
MODELING AND CFD-SIMULATION OF WOVEN TEXTILES TO DETERMINE PERMEABILITY AND RETENTION PROPERTIES
Authors: Cherif C. , Rief S. , Glatt E. , Laourine E. , Aibibu D. , Wiegmann A.
Published: December 2023

Abstract

The previous paper (No. 2, Vol. 12-2011) [1] were analyzed the weave and construction parameters of high
density woven fabric and their influence on the pore morphology, which directly effects the functional properties
such as permeability and retention. The analysis encompassed physical and optical methods of testing. In this
paper, newly developed methods, tools and programs will be presented for virtual imaging of the multi-filament
woven fabric geometry with pore structure used to determine permeability and retention properties. Two methods
are applied for the generation of virtual fabric. One method involves developing software that is able to model
woven fabric in new condition from a series of realistic input parameters. In this step, deterministic and stochastic
methods are combined to create the fabric’s geometry. The other method involves reconstruction/generation the
3D woven geometry from sequences of 2D cross section images. The results prove that the 3D pore morphology
of high density multi-filament fabric can be illustrated in correlation of the woven construction parameters. The
developed methods for modeling and the CFD simulation of woven fabric build an important basis for determining
the mechanical flow properties such as permeability and retention characteristics of filters and barrier textiles.
Additionally, the effects of mechanical loads on the fabric morphology and on the permeability values will be
analyzed by applying uniaxial and biaxial tensile loads to the fabric. The tests provide the basis for a realistic
prediction to the effects of the machine and construction parameters on the fabric properties and the resulting
permeability and retention. These predictions can aid in analyzing the suitability of a fabric for a specific
application.
On the number of perfect matchings in random polygonal chains
Authors: Wei Shouliu , Feng Yongde , Ke Xiaoling , Huang Jianwu
Published: December 2023

Let

G

G

be a graph. A perfect matching of

G

G

is a regular spanning subgraph of degree one. Enumeration of perfect matchings of a (molecule) graph is interest in chemistry, physics, and mathematics. But the enumeration problem of perfect matchings for general graphs (even in bipartite graphs) is non-deterministic polynomial (NP)-hard. Xiao et al. [C. Xiao, H. Chen, L. Liu, Perfect matchings in random pentagonal chains, J. Math. Chem. 55 (2017), 1878–1886] have studied the problem of perfect matchings for random odd-polygonal chain (i.e., with odd polygons). In this article, we further present simple counting formulae for the expected value of the number of perfect matchings in random even-polygonal chains (i.e., with even polygons). Based on these formulae, we obtain the average values of the number for perfect matchings with respect to the set of all even-polygonal chains with

n

n

polygons.
turisztikai térségek jelene és jövője. A Pécs-Villány turisztikai térség esettanulmánya
Authors: Szabó Anett
Published: December 2023

A magyar kormány 2020. év végén ratifikálta a turisztikai régiók meghatározásáról szóló 429/2020 (IX. 14.) Kormányrendeletet. A rendelet egy új turisztikai intézményrendszer kialakítását irányozza elő, amely több pontos is megegyezik a korábban már aktívan működő turisztikai desztináció menedzsment rendszerrel. Az új turisztikai intézményrendszer kialakításának célja a turisztikai fogadóterületek versenyképességének javítása a meglévő turisztikai kínálati elemek szolgáltatási csomaggá történő alakításával, a desztináció vonzerejének javításával, a jól meghatározott célcsoportok igényeinek megfelelő szolgáltatási választék és színvonal meghatározásával, valamint a desztinációk imázsának fejlesztésével. Esettanulmányomban a hazai turizmus ezen paradigmaváltását mutatom be a Pécs-Villány kiemelt turisztikai térség példáján keresztül.
TARANIS Interacts with VRILLE and PDP1 to Modulate the Circadian Transcriptional Feedback Mechanism inDrosophila
Authors: Akpoghiran Oghenerukevwe , Afonso Dinis J. S. , Zhang Yanan , Koh Kyunghee
Published: December 2023

The molecular clock that generates daily rhythms of behavior and physiology consists of interlocked transcription–translation feedback loops. InDrosophila, the primary feedback loop involving the CLOCK-CYCLE transcriptional activators and the PERIOD-TIMELESS transcriptional repressors is interlocked with a secondary loop involving VRILLE (VRI) and PAR DOMAIN PROTEIN 1 (PDP1), a repressor and activator ofClocktranscription, respectively. Whereas extensive studies have found numerous transcriptional, translational, and posttranslational modulators of the primary loop, relatively little is known about the secondary loop. In this study, using male and female flies as well as cultured cells, we demonstrate that TARANIS (TARA), aDrosophilahomolog of the TRIP-Br/SERTAD family of transcriptional coregulators, functions with VRI and PDP1 to modulate the circadian period and rhythm strength. Knocking downtarareduces rhythm amplitude and can shorten the period length, while overexpressing TARA lengthens the circadian period. Additionally,taramutants exhibit reduced rhythmicity and lower expression of the PDF neuropeptide. We find that TARA can form a physical complex with VRI and PDP1, enhancing their repressor and activator functions, respectively. The conserved SERTA domain of TARA is required to regulate the transcriptional activity of VRI and PDP1, and its deletion leads to reduced locomotor rhythmicity. Consistent with TARA's role in enhancing VRI and PDP1 activity, overexpressingtarahas a similar effect on the circadian period and rhythm strength as simultaneously overexpressingvriandPdp1. Together, our results suggest that TARA modulates circadian behavior by enhancing the transcriptional activity of VRI and PDP1.
PERFORMANCE AND STRUCTURE OPTIMIZATION OF TORSIONAL FLOW HEAT EXCHANGER WITH ORTHOGONAL DROP-SHAPED TUBE
Authors: Gu Xin , Zhu Yiwen , Sun Hao , Liu Xin , Wang Yongqing
Published: December 2023

As a novel adaptation of shell-and-tube heat exchanger, the torsional flow heat exchanger holds promising application prospects. Drop-shaped tubes are employed to enhance fluid flow velocity, distribution, and overall heat transfer performance. This study presents a torsional flow heat exchanger featuring orthogonal drop-shaped tubes on the shell side, aiming to combine the advantages of both designs. Three numerical models of torsional flow heat exchangers are established with identical structures but varying axial ratios of the heat transfer tubes. The fluid flow and heat transfer characteristics on the shell side are analyzed numerically. The response surface method is utilized to optimize a shell-side structure. The results show that the torsional flow heat exchangers with orthogonal drop-shaped tubes of three axial ratios show reductions in pressure drop by 9.26-14.49%, increases in heat transfer coefficient by 0.65-11.57%, and improvements in comprehensive performance by 14.18-27.23% within the Reynolds number range from 5000 to 13,000, compared to those with common round tubes. The optimum structure of the torsional flow heat exchanger with orthogonal drop-shaped tubes is predicted using Minitab, resulting in a 17.19% improvement in the heat transfer coefficient and an 18.63% improvement in comprehensive performance. The study provides a reference for the exploration and improvement of torsional flow heat exchangers with enhanced tubes.
History and Current State of Russian and World Mongol Studies: Status and Prospects of the Project
Authors: Vasilenko Viktoria , Kuzmin Yury
Published: December 2023

The article analyzes the characteristics of modern world and Russian Mongolian studies, main research centers and results. In 2021, a series of scientific conferences dedicated to the 100th anniversary of the establishment of Soviet-Mongolian relations were held in Russia and Mongolia, where the problems of the history of Mongolia and Russian-Mongolian relations of the twentieth century were discussed. The article gives a preliminary assessment of the joint Russian-Mongolian research project of the Russian Foundation for Fundamental Research «World and Russian Mongolian Studies: national schools, personalities and problems». The article examined historiography of Russian Mongol studies and the degree of study of the history of scientific thought. The complex and debatable problems of studying history and historiography of Mongolia as well as directions of further scientific research are shown. The researchers revealed the necessity of creating a bio-bibliographic reference book «Russian and foreign researchers of Mongolia». The scientific results of the first volume of this series are presented.
First Evidence of Microplastics Ingestion by Freshwater Fishes from Nong Luang Wetland (Chiang Rai, Thailand)
Authors: KITTICHAI CHANTIMA , KRITTAWIT SUK-UENG , PARIDCHAYA INTEP PARIDCHAYA INTEP , SARITPORN VITTAYAPADUNG
Published: December 2023

Microplastic (MP) ingestion has been reported in several marine species but knowledge regarding MPs in freshwater species is limited, with only a few studies on the occurrence of MPs in freshwater fish, particularly in Thai freshwater ecosystems. The aim of this study was to assess the occurrence of MPs for the first time in the gastrointestinal tracts (GITs) of freshwater fishes from the Nong Luang Wetland, Chiang Rai, Thailand. A total of 100 fish specimens representing 15 species from 8 families were examined. Basic fish measurements as total length and total weight were used to calculate Fulton’s condition index (F). The GITs were subsequently removed and MPs were extracted by visual inspection and digestion solution. Qualitative attributes such as color and MP types (fibers, rod-shaped and fragments) were also recorded. Results showed relatively low MP prevalence at 21.0%, with 25 MP particles removed from the GITs of specimens representing 7 species. The number of ingested MP particles ranged between 1 and 4 per fish, with an average of 1.19±0.68. MP particles were categorized as fibers (92.0%), rod-shaped (4.0%) and fragments (4.0%) with blue fibers the most prevalent. No significant correlations were observed between the number of MP particles and the body length, weight, and F value of fish. These findings provide the first evidence of MP contamination in fishes from a Thai wetland as a baseline for future studies and risk assessments on the biota of many aquatic systems spread across the country.
Drying model based on the relative humidity profile of thin-layer tomatoes in an indirect solar dryer
Authors: ALAMI Ahmed , RAJAOARISOA Lala , BENZAAMA Mohammed-hichem , BENBAKHTI Abdeldjalil
Published: December 2023

This work defined the development of a model for thin-film drying of tomatoes using an indi-rect solar dryer. Drying experiments were carried out and the drying model was approximated by a simplified model determined by the measurements collected during the experiments, in particular, the measurement of the relative humidity of the tomato during two days of drying coupled with the thermal behaviour of the drying device in free convection. The results show that with good measurements, it is possible to approximate the drying characteristic curve by a linear model with very high statistical performance indicators. The experiments also show that depending on the drying process adopted, the water behaviour of the tomato can change. In addition, the thin-film drying model adopted made it possible to assess the solar drying kinetics of the tomato variety studied. The results obtained finally show that the dryness of the tomato is reached after about 14 hours of drying. The drying temperature reaches an average of 80°C, and the final product water content after the optimal drying time is about 0.40 kg.water/kg.ms on a dry basis.
At the end of this study, we concluded that the drying air temperature represents the most important parameter affecting the drying kinetics. The very good agreement between the experimental and numerical results obtained shows that the theoretical model and assumptions used are acceptable, and that our calculation model is reliable.