A5024761167- Agricultural and Food Sciences
- Natural Fiber Reinforced Composites
- Recycling and utilization of industrial and municipal waste in materials production
- Materials Engineering and Processing
- Bauxite Residue and Utilization
- Flame retardant materials and properties
- Nanocomposite Films for Food Packaging
- Polymer Science and Applications
- Polymer Nanocomposites and Properties
- Polysaccharides Composition and Applications
- Academic Research in Diverse Fields
- Advanced Cellulose Research Studies
- Management and Optimization Techniques
- Electrospun Nanofibers in Biomedical Applications
- Wastewater Treatment and Reuse
- Environmental Sustainability and Education
- Epoxy Resin Curing Processes
- Aquaculture Nutrition and Growth
- Tailings Management and Properties
- Innovations in Concrete and Construction Materials
- Advanced Manufacturing and Logistics Optimization
- Botanical Research and Applications
- Business and Management Studies
- Water Quality and Pollution Assessment
- Occupational Health and Safety Research
Universidade Federal do Pará
2013-2024
Currently, petroleum-derived plastics are widely used. However, one of its main disadvantages is low degradation time, which not beneficial to the environment. Therefore, natural polymers an alternative overcome this obstacle. Among polymers, starch can be highlighted. Thus, objectives our investigation were obtain sisal nanofibers using concentrations acid solutions produce and characterize corn nanocomposites reinforced with these nanofibers. The films produced by a casting technique...
Halogenated flame-retardant additives typically release toxic gases during combustion, which has led to the search for substitutes. In an attempt avoid this harmful effect on human health, aim of study was investigate using a hydroxide-rich mineral waste formulate polymer matrix composite. The is rich in gibbsite "Al(OH)3", goethite "FeO(OH)" and kaolinite "Al2Si2O5(OH)4", which, once heated, water at ∼ 270, 350 500 °C, respectively. This derived from processing metallurgical bauxite...
The importance of searching for more efficient and cost-effective polymeric materials with potential applications in various industries has led this research to investigate the influence varying amount cobalt octoate production isophthalic polyester resin, examining both thermal behaviour mechanical properties these materials. primary objective is understand how concentration mechanically thermally affects resin curing process. Experiments were conducted involving resins different...
Currently, petroleum-derived plastics are widely used despite the disadvantage of their long degradation time. Natural polymers, however, can be as alternatives to overcome this obstacle, particularly cornstarch. The tensile properties cornstarch films improved by adding plant-derived nanofibers. Sisal (Agave sisalana), a very common low-cost species in Brazil, obtain plant goal study was sisal nanofibers using low concentrations sulfuric acid produce thermoplastic starch nanocomposite...
A polysaccharide was isolated from the exudate of a buriti tree trunk (Mauritia flexuosa). The molecular structure, thermal stability, morphology, crystallinity, and elemental composition product were investigated through spectroscopic techniques, such as Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR 1H 13C), energy-dispersive X-ray (EDS); thermogravimetric analysis (TG), differential scanning calorimetry (DSC), electron microscopy (SEM), diffraction (XRD)....
As indústrias de embalagens papelão ondulado representam uma alta capacidade poluidora por utilizar tintas em seus processos fabricação convencional. O tratamento do efluente gerado nessas deve ser eficiente, modo a promover remoção dos poluentes constituintes das tintas, evitando que estes cheguem aos corpos receptores. Pois, quando incorporados às águas abastecimento ofereceram riscos à saúde. Afim mitigar o presente trabalho se propõe identificar meio um diagnóstico aumentar eficiência...
Diante a atual preocupação com disposição de resíduos industriais, diferentes alternativas vêm sendo desenvolvidas fim que hajam aplicações referentes utilização desses resíduos.A lama vermelha, rejeito da lavagem bauxita, cujo final estabelece-se dentro grandes barragens, vem alvo inúmeras prospecções para uso.Deste modo, o presente trabalho visa estabelecer uma análise comparativa granulometria vermelha partir sedimentação hidráulica, valendo-se Lei Stokes e ensaios em granulômetro visando...
Terephalic Virgin Polyethylene (Pet-V) and
The globalization of the market impacts on all segments modern world; competitiveness between suppliers products and services is most relevant generally what permeates it are exponential advances in areas technology communication without proper accompaniment workforce.This study has as premise to understand impact this effect retail industry behavior costs result, with investments more equipment, strategic management maintenance Facility people, comparing efficiency effectiveness before post...
RESUMO Os compósitos são versáteis e podem ser aplicados em diversos setores dependendo das necessidades exigidas de suas características, modo a conciliar fatores como segurança, meio ambiente economia. materiais lateríticos estão presentes grande parte do território nacional apresentar teores elevados óxi-hidróxidos ferro alumínio, podendo influenciar significativamente nas propriedades térmicas poliméricos. O material utilizado no trabalho é originário da Serra Piriá, localizada município...
Esta pesquisa objetivou identificar através de análises sensoriais, microbiológicas e químicas fatores que oferecessem variação sobre o tempo vida útil no processo armazenagem em camadas gelo do Mapará (Hypophtalmus spp.).Foram realizadas duas amostras na Feira Mercado Pescado Santarém-PA: a amostra A, experimento 1, com n=143 B, 2, n=8. Foram retirados dois peixes para as avaliação pH, um prova amônia, teste Éber H2S análise microbiológica.As sensorias foram por painelistas, utilizando cada...
One of the most common problems encountered in manufacturing process is improper layout. About 30% production time wasted on transporting materials and products. The causes this waste are disposition stock machines production, that is, factory layout school desks became more efficient with use cell result found was implementation layout, there an increase number wallets produced a reduction materials. It concluded the. In context, line based cellular has been excellent ally, since cells can...