نتایج جستجو برای: textile processing
تعداد نتایج: 511332 فیلتر نتایج به سال:
در این پایان نامه تاثیر مقاوم سازی با استفاده از ) frp(fiber reinforced polymer و مقایسه آن با روش مقاوم سازی) trm(textile reinforced material روی ستون های بتن مسلح بررسی خواهد شد.. هدف مقایسه میزان جابجایی نسبی و نیز شکل پذیری در این دو روش میباشد. از آنجایی که رزین های اپوکسی به کار رفته در frp منشا نقایصی برای این ماده بودند trm ها به عنوان یک راه حل و با رویکرد حذف رزین های اپوکسی گسترش یاف...
A. Talebian, S. S. Kordestani, A. Rashidi, F. Dadashian, and M. Montazer a Islamic Azad University, Shahre Rey Branch, Faculty of Technical Engineering, Textile Dep., b Tehran-Qom freeway, Tehran, Iran b Amir Kabir University of Technology, Faculty of Biomedical Engineering, Hafez st., Tehran, Iran c Islamic Azad University, Science-Research Branch, Faculty of Technical Engineering, Textile Lab...
Background: Textile industry has been condemned as one of the world’s worst offenders in terms of pollution because 10-15% of all the dyes used in the industry are lost within wastewater during processing. The presence of even very low concentrations of dyes in effluent is highly visible and degradation products of these textile dyes are often carcinogenic. Owing to the complex nature of synthe...
OBJECTIVES Lung exposures including cigarette smoking and silica exposure are associated with the risk of rheumatoid arthritis (RA). We investigated the association between textile dust exposure and the risk of RA in the Malaysian population, with a focus on women who rarely smoke. METHODS Data from the Malaysian Epidemiological Investigation of Rheumatoid Arthritis population-based case-cont...
Indian textile industry occupies a unique position in the Indian economy. Over the period, it has gone through several changes. In the present paper, an attcmpt has been made to present an overview of Indian textile industry in terms of its structure, associated problems, its impact on environment, pollution control strategies, German ban on azo dyes, response of textile ministry to cope with t...
In general terms a fabric filter system consists of a porous flexible layer of textile material through which a dusty gas is passed to separate particles from the gas stream. Deposits on the textile are removed periodically by powerful moving and thereby cleaning of the cloth to maintain the pressure drop across the filter within practical operating limits. There are several methods to make the...
Unit cell homogenization techniques are applied on multiple length scales to compute the macroscopic hyperelastic stiffness characteristics of textile-reinforced polymer matrix composites. On the smallest scale (~50μm) the effective transversely isotropic properties of tows (or yarns) are computed based on both fiber and matrix properties. These position-dependent transversely isotropic effecti...
پنبه در فرایندهای تر نساجی بخصوص رنگرزی دارای رفتاری پیچیده و مشکل ساز می باشد. بطور کلی این گونه مشکلات به تنهایی مربوط به فرایند رنگرزی نبوده واغلب از مراحل قبل از رنگرزی شامل ویژگیهای لیف، کال و مراحل آماده سازی ناشی می شود. این وابستگی کیفیت رنگرزی منسوجات به متغیرهای مختلف که هر کدام به نوبه خود تأثیر بسزایی در خروجی فرایند دارند سبب دشوار شدن تشخیص و رفع عیب در رنگرزی های معیوب می گردد. ه...
Color is defined as “ the sensation experienced or caused by light reflected from or transmitted through objects”. In the strict sense, we cannot directly measure perceived color, however we can measure and subsequently calculate certain factors which are responsible for producing this sensation of color. The quantification of the color properties of textile materials is of great economic value...
___________________________________________________________________________ 3 1. Clusters: a review of existing literature ____________________________________________ 3 1.1 Marshall and the Italian districts ______________________________________________________ 3 1.2 Porter, the GREMI approach and further contributions_____________________________________ 4 2. A Case Study: the Textile Distri...
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