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 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 کاملEffect of age on leather and skin traits of slaughter ostriches
Little is known about the factors affecting leather and skin traits in ostriches. The effect of age on physical skin traits of slaughter ostriches was consequently investigated. Forty skins representing slaughter ages ranging from five to 14 months were selected to represent means of the respective age groups with regard to skin size and slaughter weight. It was evident that leather thickness i...
متن کاملSkin and leather characteristics of hair-type goats reared in a hot-humid region
Skin and leather characteristics of hair-type goats were studied in relation to their sex and age, using 100 randomly-selected skin from goats reared in east west Iran. Mean weights of skin and leather were 859.2±35.2 and 357.4±16.2 g, and the length and width of leather ranged from 60 to 121 and 41 to 87 cm, respectively. Age had a significant effect on the weight and area of skin and leather....
متن کاملEffect of some Skin Defects on Physical Properties of the Leather
This study was conducted to identify some of ante and post-mortem surface defects in Sudanese raw sheep and goat skins and to evaluate the effect of some of these defects on some of the key physical properties of the leather produced. The results indicated that most of the ante-mortem defects disappear during the tannage, re-tannage and finishing operations. However some defects remain visible ...
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ژورنال
عنوان ژورنال: BMJ
سال: 1886
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.1321.775-a