Algorithms for shape offsetting are of great importance in computer-aided design (CAD), computer-aided manufacturing (CAM), the numerical control (NC) of machines, computer graphics and related fields. The need for offset shapes arises in applications such as the numerical control of sawing machines or milling machines in the car industry. The problem of shape offsetting can be formulated as fo...

Laser sawing of diamonds is beginning to revolutionize the diamond-cutting industry. Not only does the laser saw offer savings in time and money, but it also enables the cutting of material virtually unworkable by conventional methods and makes available an almost limitless assortment of fancy shapes. This article describes the components and operation of the laser saw, as well as the situation...

With respect to the treatment of this complaint, I have little or nothing to advance: nor indeed is it to be expected we should have made much progress in the cure of a disease, which has hitherto hardly had a place, or a name in medical books... Opium taken at bed-time will prevent the attacks at night. I know one who set himself a task of sawing wood for half an hour every day, and was nearly...

Diamond wire sawing is one of the most widely used methods cutting Al2O3 ceramic because it has good machining accuracy and causes less surface damage. However, its material removal rate (MRR) needs to be improved with increasing demand for parts. In this paper, spark discharges are generated around diamond based on electrochemical discharge (ECDM) process. An oil film-assisted ECDM process app...

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...

In rural, isolated areas, sawmills are often equipped with one or more small-capacity hand-fed band saws. Even in this situation, the productivity of saw must be viewed through factors that influence it, namely characteristics logs and optimization stages activities carried out. Therefore, time consumption, structure working recovery rate sawing into lumber provide important information for use...