Subjects -> MANUFACTURING AND TECHNOLOGY (Total: 363 journals)
    - CERAMICS, GLASS AND POTTERY (31 journals)
    - MACHINERY (34 journals)
    - PACKAGING (19 journals)
    - PLASTICS (42 journals)
    - RUBBER (4 journals)

MANUFACTURING AND TECHNOLOGY (223 journals)                  1 2     

Showing 1 - 73 of 73 Journals sorted alphabetically
3D Printing and Additive Manufacturing     Full-text available via subscription   (Followers: 27)
Additive Manufacturing     Hybrid Journal   (Followers: 18)
Additive Manufacturing Letters     Open Access   (Followers: 3)
Advanced Composites and Hybrid Materials     Hybrid Journal   (Followers: 2)
Advanced Industrial and Engineering Polymer Research     Open Access   (Followers: 4)
Advanced Manufacturing: Polymer & Composites Science     Open Access   (Followers: 38)
Advances in Adaptive Data Analysis     Hybrid Journal   (Followers: 9)
Advances in Industrial and Manufacturing Engineering     Open Access   (Followers: 3)
Advances in Manufacturing     Hybrid Journal   (Followers: 9)
Advances in Manufacturing Science and Technology     Open Access   (Followers: 10)
Advances in Materials and Processing Technologies     Hybrid Journal   (Followers: 1)
Advances in Technology Innovation     Open Access   (Followers: 5)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Sensor Technology     Open Access   (Followers: 2)
Appita Journal: Journal of the Technical Association of the Australian and New Zealand Pulp and Paper Industry     Full-text available via subscription   (Followers: 6)
Applied Ergonomics     Hybrid Journal   (Followers: 17)
Asia Pacific Biotech News     Hybrid Journal   (Followers: 3)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 8)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Behavioral and Cognitive Neuroscience Reviews     Hybrid Journal   (Followers: 25)
Bio-Design and Manufacturing     Hybrid Journal  
Biomanufacturing Reviews     Full-text available via subscription  
Biotechnology     Open Access   (Followers: 7)
Biotechnology Progress     Hybrid Journal   (Followers: 42)
Bulletin of Science, Technology & Society     Hybrid Journal   (Followers: 9)
Centaurus     Hybrid Journal   (Followers: 7)
China Foundry     Open Access  
Circuit World     Hybrid Journal   (Followers: 16)
Clay Technology     Full-text available via subscription  
Cold Regions Science and Technology     Hybrid Journal   (Followers: 2)
Comparative Technology Transfer and Society     Full-text available via subscription   (Followers: 4)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Composites Science and Technology     Hybrid Journal   (Followers: 150)
Computer-Aided Design and Applications     Hybrid Journal   (Followers: 6)
Conference Quality Production Improvement     Open Access  
Control Theory and Informatics     Open Access   (Followers: 9)
Control Theory and Technology     Hybrid Journal   (Followers: 2)
Cryoletters     Full-text available via subscription   (Followers: 4)
Current Protocols in Essential Laboratory Techniques     Full-text available via subscription  
Current Research in Nanotechnology     Open Access   (Followers: 23)
Decision Making : Applications in Management and Engineering     Open Access   (Followers: 1)
Decision Making in Manufacturing and Services     Open Access   (Followers: 2)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 33)
Design Studies     Hybrid Journal   (Followers: 35)
Economics of Innovation and New Technology     Hybrid Journal   (Followers: 19)
Emerging Materials Research     Hybrid Journal   (Followers: 1)
Environmental Technology     Hybrid Journal   (Followers: 2)
Fibers     Open Access   (Followers: 4)
Fibers and Polymers     Full-text available via subscription   (Followers: 4)
Foresight     Hybrid Journal   (Followers: 7)
FORMakademisk - forskningstidsskrift for design og designdidaktikk     Open Access   (Followers: 2)
Futures     Hybrid Journal   (Followers: 15)
Gender, Technology and Development     Hybrid Journal   (Followers: 14)
Green Materials     Hybrid Journal   (Followers: 3)
History and Technology: An International Journal     Hybrid Journal   (Followers: 11)
History of Science and Technology     Open Access   (Followers: 2)
Human Factors in Design     Open Access   (Followers: 8)
i+Diseño : Revista científico-académica internacional de Innovación, Investigación y Desarrollo en Diseño     Open Access  
IEEE Engineering in Medicine and Biology Magazine     Full-text available via subscription   (Followers: 6)
IEEE Open Journal of Nanotechnology     Open Access   (Followers: 1)
IET Collaborative Intelligent Manufacturing     Open Access   (Followers: 1)
IETE Journal of Research     Open Access   (Followers: 10)
IETE Technical Review     Open Access   (Followers: 9)
IFAC Journal of Systems and Control     Hybrid Journal   (Followers: 1)
Indian Journal of Radio & Space Physics (IJRSP)     Open Access   (Followers: 49)
Información Tecnológica     Open Access  
Innovation: Management, Policy & Practice     Hybrid Journal   (Followers: 16)
Innovation: The European Journal of Social Science Research     Hybrid Journal   (Followers: 10)
Innovations : Technology, Governance, Globalization     Hybrid Journal   (Followers: 10)
Integrating Materials and Manufacturing Innovation     Open Access   (Followers: 7)
International Journal for Quality Research     Open Access   (Followers: 4)
International Journal for the History of Engineering and Technology     Hybrid Journal   (Followers: 2)
International Journal of Additive and Subtractive Materials Manufacturing     Hybrid Journal   (Followers: 8)
International Journal of Advanced Design and Manufacturing Technology     Open Access   (Followers: 7)
International Journal of Automation and Logistics     Hybrid Journal   (Followers: 3)
International Journal of Bifurcation and Chaos     Hybrid Journal   (Followers: 4)
International Journal of Business and Systems Research     Hybrid Journal   (Followers: 1)
International Journal of Concrete Technology     Full-text available via subscription  
International Journal of Design     Open Access   (Followers: 24)
International Journal of Design Creativity and Innovation     Hybrid Journal   (Followers: 2)
International Journal of Digital Enterprise Technology     Hybrid Journal   (Followers: 1)
International Journal of Embedded Systems and Emerging Technologies     Full-text available via subscription   (Followers: 3)
International Journal of Energy Technology and Policy     Hybrid Journal   (Followers: 6)
International Journal of Engineering and Manufacturing     Open Access   (Followers: 3)
International Journal of Engineering Materials and Manufacture     Open Access   (Followers: 2)
International Journal of Experimental Design and Process Optimisation     Hybrid Journal   (Followers: 5)
International Journal of Information Acquisition     Hybrid Journal   (Followers: 1)
International Journal of Innovation and Technology Management     Hybrid Journal   (Followers: 10)
International Journal of Innovation Science     Hybrid Journal   (Followers: 9)
International Journal of Instructional Technology and Educational Studies     Open Access   (Followers: 1)
International Journal of Intelligent Transportation Systems Research     Hybrid Journal   (Followers: 13)
International Journal of Law and Information Technology     Hybrid Journal   (Followers: 7)
International Journal of Learning Technology     Hybrid Journal   (Followers: 8)
International Journal of Lightweight Materials and Manufacture     Open Access  
International Journal of Manufacturing Engineering     Open Access   (Followers: 4)
International Journal of Manufacturing, Materials, and Mechanical Engineering     Full-text available via subscription   (Followers: 17)
International journal of materials research     Full-text available via subscription   (Followers: 2)
International Journal of Mathematical Education in Science and Technology     Hybrid Journal   (Followers: 9)
International Journal of Nano and Biomaterials     Hybrid Journal   (Followers: 8)
International Journal of Physical Modelling in Geotechnics     Hybrid Journal   (Followers: 4)
International Journal of Planning and Scheduling     Hybrid Journal   (Followers: 2)
International Journal of Power and Energy Systems     Full-text available via subscription   (Followers: 1)
International Journal of Precision Engineering and Manufacturing-Green Technology     Hybrid Journal   (Followers: 2)
International Journal of Production Management and Engineering     Open Access   (Followers: 4)
International Journal of Quality and Innovation     Hybrid Journal   (Followers: 6)
International Journal of Quality Engineering and Technology     Hybrid Journal   (Followers: 4)
International Journal of Service and Computing Oriented Manufacturing     Hybrid Journal   (Followers: 2)
International Journal of Social and Humanistic Computing     Hybrid Journal  
International Journal of System of Systems Engineering     Hybrid Journal   (Followers: 3)
International Journal of Technoentrepreneurship     Hybrid Journal   (Followers: 1)
International Journal of Technological Learning, Innovation and Development     Hybrid Journal   (Followers: 6)
International Journal of Technology and Design Education     Hybrid Journal   (Followers: 11)
International Journal of Technology and Globalisation     Hybrid Journal   (Followers: 3)
International Journal of Technology Intelligence and Planning     Hybrid Journal  
International Journal of Technology Management     Hybrid Journal   (Followers: 4)
International Journal of Technology Marketing     Hybrid Journal   (Followers: 3)
International Journal of Technology Transfer and Commercialisation     Hybrid Journal   (Followers: 2)
International Journal of Technology, Policy and Management     Hybrid Journal   (Followers: 2)
International Journal of Telecommunications & Emerging Technologies     Full-text available via subscription   (Followers: 1)
International Journal of Vehicle Autonomous Systems     Hybrid Journal  
International Journal of Vehicle Design     Hybrid Journal   (Followers: 6)
International Wood Products Journal     Hybrid Journal   (Followers: 1)
Invention Disclosure     Open Access   (Followers: 1)
ITL - International Journal of Applied Linguistics     Full-text available via subscription   (Followers: 15)
Journal of Analytical Science & Technology     Open Access   (Followers: 4)
Journal of Applied Sciences     Open Access   (Followers: 4)
Journal of Control & Instrumentation     Full-text available via subscription   (Followers: 18)
Journal of Design Research     Hybrid Journal   (Followers: 15)
Journal of Energy, Mechanical, Material and Manufacturing Engineering     Open Access   (Followers: 3)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Enterprise Transformation     Hybrid Journal   (Followers: 1)
Journal of Hazardous Materials Advances     Open Access  
Journal of High Technology Management Research     Hybrid Journal   (Followers: 2)
Journal of Industrial and Production Engineering     Hybrid Journal   (Followers: 4)
Journal of large-scale research facilities JLSRF     Open Access  
Journal of Manufacturing and Materials Processing     Open Access  
Journal of Materials Science Research     Open Access   (Followers: 7)
Journal of Micro-Bio Robotics     Hybrid Journal  
Journal of Micromanufacturing     Hybrid Journal  
Journal of Nanobiotechnology     Open Access   (Followers: 4)
Journal of Operations and Supply Chain Management     Open Access   (Followers: 6)
Journal of Production Research & Management     Full-text available via subscription   (Followers: 3)
Journal of Remanufacturing     Open Access   (Followers: 3)
Journal of Scientific and Industrial Research (JSIR)     Open Access   (Followers: 10)
Journal of Sensor Technology     Open Access   (Followers: 3)
Journal of Sensors and Sensor Systems     Open Access   (Followers: 12)
Journal of Sustainable Metallurgy     Hybrid Journal   (Followers: 3)
Journal of Technological Possibilism     Open Access  
Journal of Technology in Human Services     Hybrid Journal   (Followers: 3)
Journal of Technology Management for Growing Economies     Open Access   (Followers: 4)
Journal of Technology Management in China     Hybrid Journal   (Followers: 1)
Journal of the Chinese Institute of Industrial Engineers     Hybrid Journal  
Journal of The Royal Society Interface     Full-text available via subscription   (Followers: 9)
Journal of Urban Technology     Hybrid Journal   (Followers: 5)
Journal of Urban Technology and Sustainability     Open Access  
Jurnal Energi Dan Manufaktur     Open Access  
Lasers in Manufacturing and Materials Processing     Full-text available via subscription   (Followers: 2)
Leibniz Transactions on Embedded Systems     Open Access  
Lightweight Design     Hybrid Journal   (Followers: 4)
Management and Production Engineering Review     Open Access   (Followers: 1)
Manufacturing Letters     Full-text available via subscription   (Followers: 2)
Manufacturing Review     Open Access   (Followers: 1)
Manufacturing Science and Technology     Open Access   (Followers: 3)
Materials Circular Economy     Hybrid Journal  
Materials Science and Engineering: B     Hybrid Journal   (Followers: 22)
Materials testing. Materialprüfung     Full-text available via subscription   (Followers: 4)
MECCA Journal of Middle European Construction and Design of Cars     Open Access  
Mechanics of Soft Materials     Hybrid Journal  
Métodos y Materiales     Open Access   (Followers: 1)
Micro and Nanostructures     Full-text available via subscription   (Followers: 3)
Microgravity Science and Technology     Hybrid Journal   (Followers: 3)
Modern Electronic Materials     Open Access   (Followers: 1)
Multimodal Transportation     Full-text available via subscription   (Followers: 2)
Nano Select     Open Access   (Followers: 1)
NanoEthics     Hybrid Journal  
Nanomanufacturing and Metrology     Hybrid Journal   (Followers: 2)
Nature Biotechnology     Full-text available via subscription   (Followers: 542)
NDT & E International     Hybrid Journal   (Followers: 220)
New Techno-Humanities     Open Access   (Followers: 1)
Nonconventional Technologies Review     Open Access  
Perspectives on Global Development and Technology     Hybrid Journal  
Plastics, Rubber and Composites     Hybrid Journal   (Followers: 9)
Procedia CIRP     Open Access   (Followers: 2)
Production & Manufacturing Research     Open Access   (Followers: 2)
Progress in Additive Manufacturing     Hybrid Journal   (Followers: 8)
Progress in Rubber, Plastics and Recycling Technology     Hybrid Journal   (Followers: 1)
Reliability Engineering & System Safety     Hybrid Journal   (Followers: 19)
Remote Sensing Letters     Hybrid Journal   (Followers: 46)
Research Papers Faculty of Materials Science and Technology Slovak University of Technology     Open Access   (Followers: 3)
Revista de Ciências Exatas e Tecnologia     Open Access  
Revista Produção Online     Open Access  
Science and Technology of Advanced Materials     Open Access   (Followers: 7)
Science China Materials     Hybrid Journal   (Followers: 1)
Scientia Canadensis: Canadian Journal of the History of Science, Technology and Medicine / Scientia Canadensis : revue canadienne d'histoire des sciences, des techniques et de la médecine     Open Access   (Followers: 4)
Strategic Design Research Journal     Open Access   (Followers: 1)
Structural Health Monitoring     Hybrid Journal   (Followers: 6)
Superhero Science and Technology     Open Access   (Followers: 2)
Sustainability and Climate Change     Full-text available via subscription   (Followers: 6)

        1 2     

Similar Journals
Journal Cover
Revista de Ciências Exatas e Tecnologia
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1980-1793 - ISSN (Online) 2178-6895
Published by Universidade Norte do Paraná Homepage  [10 journals]
  • Resistências Hidrodinâmicas Observados em Projetos Navais

    • Authors: Jefferson Willian Ferreira, Luciene Vanessa Maia da Rocha Judice, Lucas Heldt
      First page: 02
      Abstract: Resumo
      O presente estudo conceitua quais as aplicações e implicações que a hidrodinâmica apresenta para a Engenharia Naval. Tendo o entendimento que todos os conceitos fundamentais da Hidrodinâmica influenciam em projetos navais. Objetivando conhecer as principais resistências hidrodinâmicas que interferem no movimento de um navio. O estudo se baseia em autores conceituados da Engenharia Naval, que transmitiram seus conhecimentos através de livros e artigos científicos. A metodologia abordada é de uma pesquisa bibliográfica que segue as normas da ABNT. Os resultados e conclusões são qualitativos, além de abranger alguns princípios náuticos. Conclui-se que os fluidos possuem características específicas que eventualmente se associam ao seu escoamento. Diversos fatores também estão presentes, no entanto se enfatiza sobre as ações das tensões normais, cisalhantes e superficiais. Tais aspectos influenciam significativamente no movimento de um navio sobre a superfície de águas calmas, sem levar em consideração o movimento das ondas. Assim para que o navio possa alcançar as velocidades requeridas, é preciso primordialmente descobrir as resistências presentes que interferem neste movimento. Desse modo os fatores de resistência precisam ser conhecidos, pois assim será possível selecionar qual o motor mais adequado. O motor correto irá gerar a potência efetiva necessária para o movimento do navio. Contudo o navio poderá enfrentar as resistências resultantes, alcançando desse modo as velocidades que o condutor desejar. Palavras-chave: Hidrodinâmica. Resistência Friccional. Resistência de Pressão Viscosa. Projeto Naval. Potência Requerida. Abstract
      The present study conceptualizes as applications and the implications of a hydrodynamics presented for Naval Engineering. To the support the personal character of the Hydrodynamics influence in naval projects. Aiming to know as the main hydrodynamic resistances that interfere with the movement of a ship. The project is based on renowned authors of Naval Engineering, who transmit their knowledge through books and scientific articles. The methodology is bibliographic research that follows the norms of ABNT. The results obtained are qualitative, besides covering some nautical principles. It concludes that the fluids have specific characteristics that eventually associate with their flow. Diverse, 1, 4, 4, 5, 4, 5, 5 These aspects significantly influence the movement of a planet on a surface of calm waters, without any consideration of the movement of the waves. What may be able to trigger when searches are needed is primarily to discover how resistances interfere with this movement. In this way, the character types are better known, so it may be faster to select the most suitable engine. The engine will generate a necessary installation for the movement of the ship. The portal can have the resistances supported, thus achieving the speed that the driver wishes. Keywords: Hydrodynamics. Frictional Resistance. Viscous Pressure Resistance. Naval Project. Required Power.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p02-06
      Issue No: Vol. 16, No. 16 (2021)
  • Análise das Manifestações Patológicas no Prédio da Faculdade
           Pitágoras em Aracati-CE

    • Authors: Gabriela Maria Silva Maia, Bene Roncari Nascimento
      First page: 07
      Abstract: Resumo
      No Brasil, é cada vez maior a quantidade de construções feitas em grande escala e em curto espaço de tempo. A falta de uma execução adequada e que atenda às exigências de qualidade e durabilidade em edificações, tanto residenciais como comerciais, vem ocasionando uma grande quantidade de manifestações patológicas nessas construções. Desta forma, o presente trabalho apresenta o levantamento e a análise das principais manifestações patológicas observadas no prédio onde se encontra instalada a Faculdade Pitágoras em Aracati-Ce. Foram utilizadas como metodologia, vistorias através da observação direta, a fim de realizar o levantamento e registrar as principais informações. Estas foram feitas por meio de fichas, fotografias e representações gráficas dos elementos. De acordo com o levantamento feito, os principais problemas encontrados foram trincas e rachaduras partindo de elementos estruturais, fissuras nas alvenarias, descolamento de cerâmica e descascamento de tinta em algumas paredes. Palavras-chave: Caracterização de Danos. Eflorescência. Fissuras. Construção. Danos. Abstract
      In Brazil, there is an increasing number of constructions made on a large scale and in a short period of time. The lack of an adequate execution that meets the demands of quality and durability in buildings, both residential and commercial, has caused a large number of pathological manifestations in these constructions. Thus, the present study presents the survey and analysis of the main pathological manifestations observed in the building where the Pitágoras School is located in Aracati-Ce. Surveys through direct observation were used as methodology, in order to carry out the survey and record the main information. These were made by means of tokens, photographs and graphic representations of the elements. According to the survey, the main problems encountered were cracks and cracking from structural elements,fissure in masonry , ceramic peeling and paint peeling on some walls. Keywords: Damage Characterization. Efflorescence. Cracks. Construction. Damage.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p07-11
      Issue No: Vol. 16, No. 16 (2021)
  • Forno Solar Modelo Caixa Quente: uma Proposta Utilizando Materiais de
           Baixo Custo

    • Authors: Claudemir Cosme da Silva, Renata Makelly Tomaz do Nascimento , Lívio Bruno Nery da Silva , Paulo Alexandre Costa Rocha
      First page: 12
      Abstract: Resumo
      Na contemporaneidade a energia alternativa é um tema bastante evidenciado, como possibilidade a complementar ou substituir as fontes de energia provenientes dos combustíveis fósseis, que afetam a saúde e causam impactos ambientais. Nessa direção, este artigo inicialmente abordará a importância da fonte alternativa da energia solar e posteriormente sugere a elaboração de um forno solar modelo caixa quente utilizando materiais que podem ser recicláveis. Assim, em muitas regiões com boa intensidade de radiação solar e onde o preço do combustível para cozinhar não é mais acessível para muitas famílias, o dinheiro pode ser usado para outras necessidades. O presente estudo tem como objetivo propor a elaboração de um forno solar modelo caixa quente, utilizando materiais de baixo custo e que possa ser usado na cozinha doméstica. Em que concomitantemente se usufrui da energia do sol e contribui na preservação do meio ambiente. Para tanto, foi utilizado metodologicamente no trabalho a pesquisa bibliográfica acerca da temática e posterior descrição dos materiais para sua construção. Quanto aos resultados o forno solar é considerado um bom exemplo de funcionalidade e ajuda na preservação do meio ambiente pois, além de cozinhar sem poluir também esteriliza os alimentos, reduzindo o risco de causar alguma doença por contaminação e ser uma opção para substituição da lenha e redução de gastos com o gás de cozinha. Como conclusão temos que através da análise da técnica, o procedimento apresentou resultados próximos da realidade de acordo com os dados encontrados de forma teórica. Palavras-chave: Fonte Alternativa. Energia Solar. Materiais Recicláveis. Abstract
      In contemporary times, alternative energy is a very highlighted theme, as a possibility to complement or replace energy sources from fossil fuels, which affect health and cause environmental impacts. In this direction, this article will initially approach the importance of the alternative source of solar energy and then suggest the elaboration of a hot box solar oven using materials that can be recycled. Thus, in many regions with good solar radiation intensity and where the price of cooking fuel is no longer affordable for many families, the money can be used for other needs. The present study aims to propose the elaboration of a hot box model solar oven, using low cost materials that can be used in the home kitchen. At the same time, it uses the sun's energy and contributes to the preservation of the environment. To this end, the methodological approach used in the work was bibliographic research on the subject and a subsequent description of the materials for its construction. As for the results, the solar oven is considered a good example of functionality and helps to preserve the environment because, besides cooking without polluting, it also sterilizes food, reducing the risk of causing some disease by contamination and being an option for replacing firewood and reducing spending on cooking gas. As a conclusion we have that through the analysis of the technique, the procedure presented results close to reality according to the data found in a theoretical way.

      Keywords: Alternative Source. Solar Energy. Recyclable Materials.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p12-15
      Issue No: Vol. 16, No. 16 (2021)
  • Química Forense: A Ciência e sua importância para a

    • Authors: Caio Delano Couto Santos, Carlos Henrique Barbosa Sabino, Caroline Ramos Pereira, Thauany Oliveira Queiroz, Francisco José Mininel
      First page: 16
      Abstract: Esse trabalho é resultado de uma revisão bibliográfica através da literatura técnica, com intuito de exemplificar e pormenorizar os principais campos aplicáveis na Química Forense cujo compromisso é a resolução de qualquer tipo de ambiente criminal; evidenciando também a origem e descoberta das Ciências Forenses, assim como a relevância da aplicabilidade dessas técnicas analíticas na solução em ambientes de crimes. A metodologia adotada no este artigo consiste na seleção de quatro periódicos originais que descrevem os principais métodos investigativos em Química Forense, tais como, Análise de Drogas de abuso, Balística Forense, Datiloscopia Forense, Documentoscopia Forense e a Quimiluminescência. O trabalho de revisão evidenciou que 75% dos periódicos selecionados abordaram técnicas e estudos envolvendo as Análises de drogas de abusos (Toxicologia) e a Balística Forense, enquanto 50% dos artigos discorreram sobre a Datiloscopia Forense, Quimiluminescência e Documentocopia. Dessa forma, revisitamos o tema e, através das informações alcançadas via livros, internet e revistas, pode-se inferir a significância que a Química Forense possui nas elucidações criminais. Os estudos nessa área são de extrema importância em tempos onde o índice criminal tem aumentado de maneira gigantesca e significativa, atingindo as cidades de todos os países e continentes.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p16-23
      Issue No: Vol. 16, No. 16 (2021)
  • Revisitação dos Métodos de Extração de Pigmentos
           do Urucum

    • Authors: Caroline Diodato de Toledo, Douglas Almeida Teixeira, Elisabeth da Vitória Archanjo, Felipe Fernando Pereira, Fernanda Cristina Siqueira, Francisco José Mininel, Jean Soares de Lima, Kelly da Mota Silveira
      First page: 24
      Abstract: Resumo
      Os corantes podem ser utilizados para muitas finalidades e uma grande quantidade destas são de cunho industrial, como por exemplo, a indústria de alimentos que utiliza estes corantes para conferir cores mais atrativas aos seus produtos, induzindo sua compra pelo consumidor final. O Brasil é considerado um dos maiores produtores de Urucum do mundo, visto que alguns estados brasileiros produzem a planta, sendo Rondônia o maior produtor. Mas apenas uma pequena parte dessa produção é destinada a indústria de corantes, isto deve-se ao seu alto custo de produção. Este artigo tem como objetivo o estudo das extrações da Bixina da planta Bixa Orellana, popularmente conhecida como Urucum ou Urucu, que, é um termo tupi-guarani que traduzido para a língua portuguesa significa vermelho. Analisando os três processos de extração, sendo eles a extração por imersão em solução alcalina, a Extração por imersão em óleo vegetal e a Extração por solventes orgânicos, chegou-se à conclusão de que embora a extração por solventes orgânicos facilite a obtenção do produto, é considerada pouco viável. A extração por imersão em solução alcalina é o método mais utilizado por ser possível uma obtenção do produto em maior quantidade, sendo mais viável economicamente, considerando seu alto custo. Palavras-chave: Bixina. Corante. Extração. Abstract
      Dyes can be used for many purposes and a large number of these are of an industrial nature, such as, for example, the food industry that uses these dyes to give more attractive colors to its products, inducing their purchase by the final consumer. Brazil is considered one of the largest producers of Annatto in the world, since some Brazilian states produce the plant, with Rondônia being the largest producer. But only a small part of this production is destined for the dye industry, this is due to its high cost of production. This article aims to study the extractions of Bixin from the Bixa Orellana plant, popularly known as Urucum or Urucu, which is a Tupi-Guarani term that translated into Portuguese means red. Analyzing the three extraction processes, namely extraction by immersion in alkaline solution, Extraction by immersion in vegetable oil and Extraction by organic solvents, it was concluded that although extraction by organic solvents makes it easier to obtain the product, is considered not viable. Extraction by immersion in alkaline solution is the most used method because it is possible to obtain the product in greater quantity, being more economically viable, considering its high cost. Keywords: Bixin. Dye. Extraction.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p24-29
      Issue No: Vol. 16, No. 16 (2021)
  • Sala de Aula Invertida: Possibilidade do Uso do Recurso Digital (Microsoft
           Sway) para o Desenvolvimento da Aprendizagem em Ciências Naturais

    • Authors: William Cristiano Figueiredo, Adriele Tainá Ferreira da Silva, Beatriz Silva Santiago, Heloísa Glins Santos, Jorge Raimundo da Trindade Souza
      First page: 30
      Abstract: Resumo
      A utilização de recursos tecnológicos e mídias digitais se tornaram essenciais diante da realidade vivenciada devido a pandemia da Covid-19. O objetivo deste trabalho foi o de propor uma estratégia para o desenvolvimento do professor para aulas remotas com a utilização de metodologia ativa: Aula invertida com o uso do recurso digital Microsoft Sway, para o desenvolvimento da aprendizagem em Ciências Naturais. A metodologia utilizada na pesquisa foi de cunho exploratório, com a aplicação de um questionário semiestruturado, com perguntas fechadas, abertas e mistas pelo Google Forms, no período de 1 a 21 de julho. O participante da pesquisa foi um professor voluntário do PIBID: FISCIENAT-UFPA de Ciências Naturais, da Escola Estadual, localizada na região metropolitana de Belém–PA. Os resultados demonstraram que o fator econômico é um empecilho para os alunos das turmas do professor, principalmente no acesso ao material fornecido. Em relação a estratégia didática da sala de aula invertida o resultado foi que embora o professor não tenha tido a oportunidade de utilizar em sala de aula, possui amplos conhecimentos prévios sobre da metodologia e da tecnologia em sala, contudo, possuía conhecimentos prévios acerca da tecnologia. Logo conclui-se que o professor tem uma base para conseguir ministrar suas aulas de forma ativa, tornando o processo de aprendizagem mais interativo, influenciando positivamente na aprendizagem do alunado. Palavras-chave: Sala de Aula Invertida. Tecnologia Digital na Educação. Ciências Naturais. Abstract
      The use of technological resources and digital media has become essential in the face of the reality experienced due to the Covid-19 pandemic. The objective of this work was to propose a strategy for the development of the teacher for remote classes with the use of active methodology: Inverted classroom with the use of the digital resource Microsoft Sway, for the development of learning in Natural Sciences. The methodology used in the research was exploratory, with the application of a semi-structured questionnaire, with closed, open and mixed questions, using Google Forms, from July 1st to July 21st. The research participant was a volunteer teacher of the PIBID: FISCIENAT-UFPA of Natural Sciences, from a State School, located in the metropolitan area of Belém - PA. The results showed that the economic factor is an obstacle for the students of the teacher's classes, mainly in the access to the material provided. In relation to the didactic strategy of the flipped classroom, the result was that although the teacher did not have the opportunity to use it in the classroom, he had ample previous knowledge about the methodology and the technology in the classroom, however, he did have previous knowledge about the technology. Therefore, it is concluded that the teacher has a basis to be able to teach his classes in an active way, making the learning process more interactive, positively influencing the students' learning. Keywords: Inverted Classroom. Digital Technology in Education. Natural Sciences.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p30-34
      Issue No: Vol. 16, No. 16 (2021)
  • Caracterização e Avaliação do Potencial Adsortivo de Materiais
           Produzidos à Partir do Resíduo da Casca da Acácia Negra (Acacia
           Mearnsii De Wild) para o Branqueamento do Óleo de Arroz

    • Authors: Natallia Britto Azevedo Souza, Nicole Dall'Accua Lopes, Rogério da Silva Camargo, Valéria Terra Crexi, André Ricardo Felkl de Almeida, Candice Soares Dias
      First page: 35
      Abstract: Resumo
      Em busca de encontrar adsorventes abundantes, de baixo custo e eficientes este trabalho objetivou estudar a produção de adsorventes a partir do resíduo da casca da acácia-negra proveniente da extração do tanino na forma moída, tratada quimicamente com NaOH 20% e como precursora para a produção de carvão ativado através da pirolise em atmosfera de nitrogênio, afim de ser aplicada na etapa do branqueamento do óleo de arroz. Os adsorventes foram caracterizados quanto sua massa específica real e aparente, diâmetro de partícula, porosidade, análise imediata, TGA, DRX e área superficial específica. O óleo neutralizado e os óleos branqueados foram avaliados quanto seu índice de peróxidos, acidez, carotenoides, cor e ɣ-orizanol. As análises de TGA e DRX demonstraram que tanto o NaOH quanto a pirolise causaram a degradação da hemicelulose e celulose da casca da acácia, gerando uma estrutura mais amorfa. Os tratamentos também reduziram o diâmetro de partícula e o carvão produzido obteve uma área superficial específica de 204,9m²/g. Verificou-se nos ensaios de branqueamento que todos os adsorventes produzidos apresentaram índices de redução para os parâmetros avaliados, com destaque para a casca ativada quimicamente com NaOH que apresentou os melhor resultados para a redução de carotenoides, acidez, cor e ɣ-orizanol. Dessa forma, pode-se dizer que todos os materiais produzidos a partir da casca da acácia-negra mostraram grande potencial adsortivo e devem sem melhor explorados. Palavras-chave: Acácia-Negra. Adsorventes. Carvão Ativado. Óleo de Arroz. Abstract
      In order to find abundant, low-cost and efficient adsorbents, this work aimed to study the production of adsorbents from black wattle bark residue from the extraction of tannin in ground form, chemically treated with 20% NaOH and as a precursor for production of activated carbon through pyrolysis in a nitrogen atmosphere, in order to be applied in the rice oil bleaching stage. Adsorbents were characterized for their real and apparent specific mass, particle diameter, porosity, immediate analysis, TGA, XRD and specific surface area. Neutralized oil and bleached oils were evaluated for their peroxide index, acidity, carotenoids, color and ɣ-oryzanol. TGA and XRD analyzes showed that both NaOH and pyrolysis caused the degradation of hemicellulose and cellulose in the bark of the acacia, generating a more amorphous structure. The treatments also reduced the particle diameter and the charcoal produced had a specific surface area of 204.9 m²/g. It was verified in the bleaching tests that all produced adsorbents presented reduction indexes for the evaluated parameters, with emphasis to the chemically activated bark with NaOH that presented the best results for the reduction of carotenoids, acidity, color and ɣ-oryzanol. Thus, it can be said that all materials produced from black wattle bark showed great adsorptive potential and should be better explored. Keywords: Black Wattle. Adsorbents. Activated Charcoal. Rice Oil.
      PubDate: 2021-12-14
      DOI: 10.17921/1890-1793.2021v16n16p35-41
      Issue No: Vol. 16, No. 16 (2021)
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762

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