نتایج جستجو برای: jewelry manufacture
تعداد نتایج: 17196 فیلتر نتایج به سال:
Quick-return mechanism 
 Sliding mode control Jewelry welding powder Optimum design
Metals, especially nickel, are the most common contact allergens in children. Recent data has shown increased incidence of allergy in industrialized countries. Sensitization can occur at any age, even in neonates. Costume jewelry, particularly earrings, is linked to increased sensitization to nickel. Sensitization to cobalt often occurs by the use of costume jewelry. The most common source of s...
In early India, people handcrafted jewellery out of natural materials found in abundance all over the country. Seeds, feathers, leaves, berries, fruits, flowers, animal bones, claws and teeth; everything from nature was affectionately gathered and artistically transformed into fine body jewellery. Even today such jewellery is used by the different tribal societies in India. It appears that both...
Jewelry in the Classical era Indonesia, especially Late Classic era, occupies an important position society. Apart from being a symbol of person's status and position, when discussing depiction jewelry on statue or relief, worn by character is also indication determining identity character. was made gold, which considered to have high material, symbolic, religious value society at that time. Ba...
When studying jewelry craft, technological observations become a full-fledged source. In recent decades, work has intensified on the study of chemical composition made from non-ferrous metal alloys. The series alone makes it possible to identify connection between technique making rings and alloy. addition, we raise question try answer basis materials available at moment: could village Vezha ha...
This study examines and compares three pieces of Renaissance style gold and enamelled jewelry owned by the Walters Art Gallery, Baltimore, MD, USA. These are a 16th century Hat Badge of Adam and Eve, a 19th century Fortitude Pendant and a Diana Pendant presumed to be of the 16th century (The Walters Art Gallery, Jewelry, Ancient to Modern (Viking, New York, 1979)), Ref. [1]. PIXE spectroscopy w...
A total of 45 children's toys and jewelry were tested for total and bioaccessible metal concentrations. Total As, Cd, Sb, Cr, Ni, and Pb concentrations were 0.22-19, 0.01-139, 0.1-189, 0.06-846, 0.14-2894 and 0.08-860,000 mg kg(-1). Metallic products had the highest concentrations, with 3-7 out of 13 samples exceeding the European Union safety limit for Cd, Pb, Cr, or Ni. However, assessment ba...
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