نتایج جستجو برای: double taper sawing and square sawing
تعداد نتایج: 16885793 فیلتر نتایج به سال:
Background and Aims : According to the common application of non-metal prefabricated posts in dentistry and lack of enough information about the stress distribution in the root canal walls by these posts, this study was performed to compare the effect of two simple taper and double taper posts on the stress distribution on root canal walls by photo elastic method . Materials and Methods: Th...
A 29-year-old healthy Thai female, working as a design and technology teacher,was referred to our clinic because of a 2-month history of recurrent hives over the forearms, face, and neck. She had not experienced symptoms in her job in the 4 years before, until a new wood material, meranti (Shorea species), was introduced to her workshop. She would develop itchy wheals minutes to hours after saw...
Abstract Today, wire sawing of natural stone is undergoing widespread commercialization. In addition to rock extraction and processing with single wires, composed a multitude diamond-impregnated beads mounted onto steel rope, this technology increasingly used for slabbing granite blocks on multi-wire machines. Evolving sophistication equipment dictates novel tool designs formulations. For techn...
Predicting the wear performance of circular diamond saw in the process of sawing hard dimensional stone is an important step in reducing production costs in the stone sawing industry. In the present research work, the effective parameters on circular diamond saw wear are defined, and then the weight of each parameter is determined through adopting a fuzzy rock engineering system (Fuzzy RES) bas...
OBJECTIVE We utilized job safety analysis (JSA) and hazard identification for work accident prevention in Para rubber wood sawmills, which aimed to investigate occupational health risk exposures and assess the health hazards at sawmills in the Trang Province, located in southern Thailand. METHODS We conducted a cross-sectional study which included a walk-through survey, JSA, occupational risk...
Body reactions during chain saw work were studied in 14 subjects. The subjects divided into three groups (control, sulpiride, and propranolol) successively cut down logs with a chain saw for seven minutes. The start of the sawing led to a pronounced increase in heart rate which persisted during the sawing. The groups taking sulpiride and propranolol showed a smaller increase in heart rate compa...
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