نتایج جستجو برای: plant fibres

تعداد نتایج: 410661  

Journal: :Occupational and environmental medicine 1995
W N Trethowan P S Burge C E Rossiter J M Harrington I A Calvert

OBJECTIVES To study the relation between occupational exposure to ceramic fibres during manufacture and respiratory health. METHODS The respiratory health of 628 current employees in the manufacture of ceramic fibres in seven European plants in three countries was studied with a respiratory questionnaire, lung function tests, and chest radiography. Simultaneous plant hygiene surveys measured ...

Journal: :Annals of Occupational Hygiene 2008
S. Føreland E. Bye B. Bakke W. Eduard

OBJECTIVES The aim of this study was to assess personal exposure to fibres, crystalline silica, silicon carbide (SiC) and sulphur dioxide in the Norwegian SiC industry. METHODS Approximately 720 fibre samples, 720 respirable dust samples and 1400 total dust samples were collected from randomly chosen workers from the furnace, processing and maintenance departments in all three Norwegian SiC p...

Journal: :Global Journal of Engineering and Technology Advances 2021

This paper focuses on the application of Taguchi Robust Design to determine optimum tensile strength Ukam-Plant Fibre Reinforced CNSL Composite using indigenous or locally sourced vegetable plant based natural fibres (Ukam-plant fibres) that are Lignocellulose as potential raw material. Tensile tests were conducted replicated samples obtain properties. Hounsfield Mosanto Tensometer, a universal...

Journal: :Composites Part A-applied Science and Manufacturing 2021

There is an urgent need to halt the degradation of ecosystems on Earth. For acquisition, modification and disposal natural fibres their composites, use organisms associated enzymes offers a promising route sustainable composites. This would potentially reduce required energy milder reaction conditions. paper reviews for (a) extraction from plant material (retting), (b) surface fibres, (c) end-o...

2003
E. Bach A. Schmidt E. Cleve

While dyeing of poly(ethylene terephthalate) (PETP) fibres in supercritical carbon dioxide is now on its way to be transferred into the textile finishing industry to check the economic efficiency and practicability in an upscaled plant, dyeing of natural fibres such as cotton is still a problem. Within the paper an overview is given about the international stateof-the-art of dyeing technical (a...

Journal: :Civil and Environmental Engineering Reports 2019

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

2007
Magdalena Czemplik Magdalena Wróbel-Kwiatkowska Jan Szopa Elżbieta Rębas Kamila Domińska Agnieszka Lachowicz

Flax (Linum usitatissimum L.) is an annual plant cultivated mainly for its fibres. Although the whole genus contains about 230 species, only L. usitatissimum retains an important commercial use, serving as a fibre source for the textile industry. Flax fibres are less elastic than cotton fibres, and thus their use in textile production is more limited. However, the climate and soil quality in ce...

2011
Magdalena Żuk Anna Kulma Lucyna Dymińska Katarzyna Szołtysek Anna Prescha Jerzy Hanuza Jan Szopa

BACKGROUND Flavonoids are a group of secondary plant metabolites important for plant growth and development. They show also a protective effect against colon and breast cancer, diabetes, hypercholesterolemic atherosclerosis, lupus nephritis, and immune and inflammatory reactions. Thus, overproduction of these compounds in flax by genetic engineering method might potentiate biotechnological appl...

Journal: :International journal of engineering and advanced technology 2021

Fibrous wastes correspond to approximately 54.3 wt.-% of a banana plant. The waste weight is mainly bunches, stems, and leaves. These ligno-cellulosic fibre can be designed tailored yield value added products which exploited by the farmers, exporters weavers. Pectin (plant cement) hemicelluloses (22-25%) found in plant cell walls plate (middle lamella). macromolecules have needs hydrolyzed fast...

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