Results 11 to 20 of about 364,202 (267)

Estudo dos efeitos da acetilação em fibras de sisal Study of the effects of acetylation treatments on sisal fiber

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
O emprego de fibras vegetais na confecção de compósitos tem grande viabilidade, no que diz respeito ao uso de materiais oriundos de fontes renováveis, à biodegradabilidade e aos benefícios socioeconômicos gerados na produção de matéria-prima vegetal.
Fernanda F. M. Lopes, Gilmar T. de Araújo, José W. B. do Nascimento, Tatiana S. Gadelha, Valneide R. da Silva   +4 more
doaj   +1 more source

Acetylation Treatment for the Batch Processing of Natural Fibers: Effects on Constituents, Tensile Properties and Surface Morphology of Selected Plant Stem Fibers

Fibers, 2020
This work was on the comparative evaluation of the property effects obtainable when acetylation is applied to parts of selected agro fibers that are obtainable within common localities. The fibers were subjected to different concentrations of acetylation
Isiaka Oluwole Oladele, Omokafe Seun Michael, Adeolu Adesoji Adediran, Oluwayomi Peter Balogun, Folorunso Ojo Ajagbe   +4 more
doaj   +1 more source

The Effects of Ozone Treatment on Soybean Fibers

Ozone: Science & Engineering, 2012
A set of knitted fabrics comprising soybean fibers was ozonated at room temperature for periods ranging from 2.5 to 300 minutes to identify any accompanying effects on either physical properties (specifically whiteness and burst-strength), fiber surface integrity or microstructure.
Avinç, Osman Ozan, Eren, H.A., Uysal, P., Wilding, M.   +3 more
openaire   +8 more sources

Modificação das propriedades das fibras de curauá por acetilação Modification of the properties of curauá fibers by acetylation

Revista Brasileira de Engenharia Agrícola e Ambiental, 2011
Nos compósitos cimentíceos as fibras vegetais podem sofrer vários graus de degradação quando expostas ao ambiente alcalino. O meio alcalino degrada os componentes macromoleculares das fibras, principalmente pela solubilização da lignina e a desfibrilação
Fernanda F. M. Lopes, Gilmar T. Araújo, Saionara Luna, José W. B. do Nascimento, Valneide R. da Silva   +4 more
doaj   +1 more source

Comparison of colors, microstructure, chemical composition and thermal properties of bamboo fibers and parenchyma cells with heat treatment

Journal of Wood Science, 2021
The effects of heat treatment at various temperatures on mechanically separated bamboo fibers and parenchyma cells were examined in terms of color, microstructure, chemical composition, crystallinity, and thermal properties.
Jieyu Wu, Tuhua Zhong, Wenfu Zhang, Jiangjing Shi, Benhua Fei, Hong Chen   +5 more
doaj   +1 more source

Effect of heat treatment on structure and mechanical properties of basalt fibers and its application for fabrication Cu based composite

Materials Research Express, 2022
This paper firstly presents an experimental investigation of the effects of heat treatment temperatures and atmosphere on the tensile strength and structure of basalt fibers. The results show that the basalt fibers after heat treatment in air (200–600 °C)
Weiwei Zhu, Qian Li, Haohao Zou, Ying Han, Yu Zhao, Xu Ran   +5 more
doaj   +1 more source

Shear strengthening of RC beam using RFRP composites

Magazine of Civil Engineering, 2022
Partial or complete replacement of non-renewable composite materials with natural fiber reinforced polymer composites, such as basalt fiber, carbon fiber and glass fiber reinforced polymer composite can reduce the consumption of non-renewable resources ...
Gai Xiaolian, He Dongpo, Wang Hongguang
doaj   +1 more source

Soil Application of Nano Silica on Maize Yield and Its Insecticidal Activity Against Some Stored Insects After the Post-Harvest

Nanomaterials, 2020
Maize is considered one of the most imperative cereal crops worldwide. In this work, high throughput silica nanoparticles (SiO2-NPs) were prepared via the sol–gel technique.
Mehrez E. El-Naggar, Nader R. Abdelsalam, Moustafa M.G. Fouda, Marwa I. Mackled, Malik A.M. Al-Jaddadi, Hayssam M. Ali, Manzer H. Siddiqui, Essam E. Kandil   +7 more
doaj   +1 more source

Microstructural developments of poly (p-phenylene terephthalamide) fibers during heat treatment process: a review [PDF]

Materials Research, 2014
Poly (p-phenylene terephthalamide) fibers prepared by wet or dry-jet wet spinning processes have a notable response to very brief heat treatment (seconds) under tension.
Dawelbeit Ahmed, Zhong Hongpeng, Kong Haijuan, Liu Jing, Ma Yu, Yu Muhuo   +5 more
doaj   +2 more sources

Fiber and exercise in the treatment of obese adolescents

Journal of Adolescent Health Care, 1989
The changes in body weight, body fat, lean body mass, and the efficiency index were studied in a sample of 80 obese males and females undergoing four different treatments, using two treatment components: an increase in dietary fiber, and energy expenditure through exercise.
M, Peña, J, Bacallao, L, Barta, M, Amador, F E, Johnston   +4 more
openaire   +2 more sources