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The paper presents the results of comparative study of performance of cutting tools made of ceramic-bound, binderless cBN, and wBN-cBN tool materials. The tool performance was assessed by tool wear-resistance, values of cutting forces, parameters of machined surface quality, and the state of sub-surface layer generated in continuous turning of hardened cold work tool steel. The tests were carried

Clinical use of allografts of fetal ventral mesencephalic tissue as a treatment to replace dopaminergic neurons in patients with Parkinson's disease was first done more than 20 years ago. Since then, many patients have received transplants, with variable results. During this time, our knowledge of Parkinson's disease has changed and the nature and extent of problems associated with the disorder ha

In this paper, we first present a survey of existing color buffer compression algorithms. After that, we introduce a new scheme based on an exactly reversible color transform, simple prediction, and Golomb-Rice encoding. In addition to this, we introduce an error control mechanism, which can be used for approximate (lossy) color buffer compression. In this way, the introduced error is kept under s

A bioassay screening against protozoa parasites of several Tacana medicinal plants gave Hyptis brevipes (Id'ene eidhue), traditionally used as decoction for intestinal parasites, as the most active extract. In this work we did a bioguided isolation of active constituents found in leaves. Structure elucidation was carried out by NMR spectroscopy and MS spectrometry analyses. Active constituents sho

The present study uses RSM (Response Surface Methodology) to verify the fusibility of bottom ash from coal industry, and efficient flux between, calcium oxide (CaO), lithium oxide (Li2O) and sodium oxide (Na2O). The bottom ashes,have demonstrated the possibility to be used in the development of glass-ceramics, and glassy materials, due to the presence of high concentrations of aluminum silicates.

The description of the drug user and drug abuse varies and has changed over time. The aim of this study is to put a social constructionist approach to examine the social construction of drug abuse and drug users within selected parts of a specific Swedish public inquiry (SOU 2011:35). I have analyzed my material by dividing it into categories using a qualitative method for analyzing the content of

The aim of the thesis is to provide a solution for a new dome camera housing that fits Axis' P33 camera model so that it can be placed on ships. Extensive research is done into the maritime environment, corrosion, surface treatments and the state of Axis' current cameras. Detailed analysis is done regarding aluminum, stainless steel and plastics and their respective manufacturing methods.

The purpose of this study is to compare different schemes of anti-windup. The methods are compared for different processes and different disturbances; step response in setpoint, and load and measurement noise. The controller parameters are determined by the MIGO method and the reset time constant. The tests have been done by simulation in Matlab Simulink and the report is divided for PI and PID co