منابع مشابه
Leather
Leather is derived from the hides of skins of animals. It is a remarkably durable, strong and versatile material, which in its various forms has been made into objects ranging from African shields and drums to European saddles and kinky underwear. From as early as 2700 BC until fairly recently leather was also in the forefront of information technology with its use (as skins, vellum and parchme...
متن کاملa laboratory analysis on a seljuk leather bottle found from qhalee kooh-i qaen excavation
leather artifacts have organic and degradable structure and some historic samples have remained from different historical periods. studies of these scarce specimens have a great importance in the conservation procedure by which the structural study of leather artifact for understanding production process and used materials can be achieved. for this purpose a historic leather bottle has been stu...
متن کاملLeather Inspection Based on Wavelets
This paper presents a new methodology to detect leather defects, based on the wavelet transform. The methodology uses a bank of optimised filters, where each filter is tuned to one defect type. Filter shape and wavelet sub-band are selected based the maximisation of the ratio between features values on defect regions and on normal regions. The proposed methodology can detect defects even when s...
متن کاملCharacterization of Leather Industry Wastes
In this research samples from solid wastes coming out from various process steps during manufacturing of garment sheep skins, shoe upper goat skins, shoe upper hides and sole leathers have been collected. These samples have been classified among themselves and their characteristics have been determined by various chemical analysis. By characterization of solid wastes which state problems for th...
متن کاملNitrosamine in leather dust extracts.
The interest in the carcinogenic and biological actions of N-nitroso compounds arose following the reports of the hepatotoxicity by Freund' and Barnes and Magee2 and ofcarcinogenicity (Magee and Barnes)3 of the simplest nitrosamine: N-nitrosodimethylamine (dimethylnitrosamine) and the subsequent observation of Schoental4 and Druckrey et aP on the carcinogenic action of the nitrosamides: n-methy...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1915
ISSN: 0003-4932
DOI: 10.1097/00000658-191507000-00005