polypropylene oxide

This study intends to improve the bond performance of the polypropylene fiber used as reinforcing fiber for concrete by changing its shape into double crimped type through the enhancement its fabrication process. The bond performance of such double crimped fiber is evaluated by applying the JCI SF-8 (dog method. The test results reveal that the double crimped fiber develops bond performance imp...

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بررسی تجربی ضربه سرعت بالا بر الیاف پلی‌پروپیلن با مدول بالا آغشته به سیال غلیظ شونده برشی

ژورنال: مواد پرانرژی 2018

داودی نیک, علیرضا, رضایی, محمد, زارعی, حمیدرضا, قاسمی نسب, علیرضا,

Abstract This paper is investigated the effect of impregnation of the high modulus polypropylene shear thickening fluid. Fluid using silica nanoparticles dispersed in polyethylene glycol in both 42% and 44% has been achieved. The penetration tests conducted in this study is in accordance with NIJ 0101-04. The results are evinced that the penetration resistance is improved by impregnation of ...

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Effect of Storage Temperature and Light on the Freeze-Dried Amino Acids from Sugar Beet and Sugar Cane Molasses

Journal: Journal of Food Biosciences and Technology 2019

M. H. Eikani M. Honarvar M. R. Omidkhah M. Varaee N. Mooraki

Molasses is a significant by-product of sugar beet or sugar cane refining industry. In this work, the effects of storage temperature and packaging on the contents of free amino acids (AAs) in sugar beet and sugar cane molasses after freeze drying were inquired. The effect of different variables such as, temperature (4 and 25˚C) and light (Metallized polypropylene container and Normal polypropyl...

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Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing

Journal: Polyolefins Journal 1999

Ana Paula Pezzin, Larissa Montagna, Maria Madalena Forte, Ruth Marlene Santana,

In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic pro-degradant submitted to ageing in a natural environment and to accelerated ageing test. Th...

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Effective Use of Synthetic Seed Technology in the Regeneration of Dendrobium White Fairy Orchid

Journal: Journal of Ornamental Plants 2014

Boon Keat Yew Hui Ping Liew Mei Yun Kwok Wee Leng Siew Yong Mei Ong

The synthetic seed technology is becoming popular due to its wide application in germplasm conservation and for exchanges between countries in the floriculture trade. In this study, this method was used to study the germination and conversion capabilities of orchid species Dendrobium White Fairy when stored at different storage times and with different storage containers. A high germination per...

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Comparison of three distinct clean air suits to decrease the bacterial load in the operating room: an observational study

2016

Piotr Kasina Ann Tammelin Anne-Marie Blomfeldt Bengt Ljungqvist Berit Reinmüller Carin Ottosson

BACKGROUND Lowering air-borne bacteria counts in the operating room is essential in prevention of surgical site infections in orthopaedic joint replacement surgery. This is mainly achieved by decreasing bacteria counts through dilution, with appropriate ventilation and by limiting the bacteria carrying skin particles, predominantly shed by the personnel. The aim of this study was to investigate...

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نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید

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