نتایج جستجو برای: leather drying optimization

تعداد نتایج: 343834  

2015
Yolanda S Hedberg Carola Lidén Inger Odnevall Wallinder

BACKGROUND Approximately 1-3% of the adult population in Europe is allergic to chromium (Cr). A new restriction in REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) based on the ISO 17075 standard has recently been adopted in the EU to limit Cr(VI) in consumer and occupational leather products. OBJECTIVES The aim of this study was to critically assess key experiment...

Journal: :Artificial limbs 1963
J T HILL F LEONARD

THE problem of perspiration and its removal from the amputee's arm and leg stumps encased in sockets has engaged the attention of the doctor and limb fitter for as long as limbs have been fitted. In the early days of leather prostheses, a few months of wear during the summer were sufficient to cause the leather to rot and degrade because of perspiration. Since it was not possible to wash leathe...

Journal: :Genetics and molecular research : GMR 2012
G N Ojeda P S Amavet E C Rueda P A Siroski

Sometimes, commercial products obtained from wild animals are sold as if they were from domestic animals and vice versa. At this point of the productive chain, legal control of possible wildlife products is difficult. Common in the commerce of northern Argentina, skins of two wild species, the carpincho and the collared peccary, look very similar to each other and to those of the domestic ...

Journal: :Annals of dermatology 2010
Jong Ho Lim Hei Sung Kim Young Min Park Jun Young Lee Hyung Ok Kim

Chromium is a transition metal and has been shown to elicit contact dermatitis. Although leather products have been known to be the most significant source of chromium exposure these days, the majority of reports have been related to exposure from shoe products. We herein report a professional golfer who became allergic to golf gloves made of chromium-tanned leather. A 27-year-old woman golfer ...

2013
G. Sekaran

Disposal of chrome tanned leather waste (CTLW) generated in leather processing industries has many environmental implications. This paper presents a double pyrolysis (PI & PII) method to dispose hazardous chrome tanned leather solid waste by converting it into useful products. When CTLW was subjected to double pyrolysis, three major products obtained were; (i) an energy enriched combustible gas...

Journal: :Molecules 2011
Frederik H Romer Andrew P Underwood Nadine D Senekal Susan L Bonnet Melinda J Duer David G Reid Jan H van der Westhuizen

Solid state ¹³C-NMR spectra of pure tannin powders from four different sources--mimosa, quebracho, chestnut and tara--are readily distinguishable from each other, both in pure commercial powder form, and in leather which they have been used to tan. Groups of signals indicative of the source, and type (condensed vs. hydrolyzable) of tannin used in the manufacture are well resolved in the spectra...

2009
Yan Lu Yi Chen HaoJun Fan BiYu Peng Bi Shi

A novel pickle less combination tannage based on nano-SiO2 and oxazolidine as a substitute for chrome tanning has been developed. The size and distribution of nano-SiO2 in protein, the hydrothermal stability, the mechanical properties and the antifungal effect of final leather as well as the evaluation of eco-friendly characteristics of combination tannage were investigated. Scanning Electric M...

Journal: :Analytical chemistry 2011
Kazuhiko Nakano Chihiro Nishi Kazunori Otsuki Yoshinori Nishiwaki Kouichi Tsuji

Micro-XRF is a significant tool for the analysis of small regions. A micro-X-ray beam can be created in the laboratory by various focusing X-ray optics. Previously, nondestructive 3D-XRF analysis had not been easy because of the high penetration of fluorescent X-rays emitted into the sample. A recently developed confocal micro-XRF technique combined with polycapillary X-ray lenses enables depth...

علی پور, صدر الدین, مهدی آبادی, منیژه, کاردار, سعید,

Introduction: Harmful effects of environmental pollutants and their environmental impacts necessitate revention of the pollution emission from various industries. Leather industry is one of the most polluting industries, with chromium compounds as an important contamination, widely used in the tanning process. The present study aimed to determine the causes of high chromium concentration from l...

Journal: :British journal of industrial medicine 1986
E Merler A Baldasseroni R Laria P Faravelli R Agostini R Pisa F Berrino

A case-control study was performed on the incident cases of nasal cavity tumours which occurred between 1968 and 1982 among the residents of Vigevano (Lombardy region, northern Italy). This area is characterised by a high prevalence of shoemakers (especially in leather); the activity has predominated in Vigevano since the beginning of this century. Twenty one cases were identified (16 men and f...

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