During the grinding process, workpiece is not only cut by abrasive grains but adhesive wear also occurs due to high temperature and heavy load, reducing surface quality of workpiece. In this paper, a test method considering speed, force, coefficient, hardness was proposed. A new physical model prediction established based on finite element numerical simulation technology. The carried out machin...

BACKGROUND The aim of this epidemiological study was to investigate the relationship of thermal discomfort with cold extremities (TDCE) to age, gender, and body mass index (BMI) in a Swiss urban population. METHODS In a random population sample of Basel city, 2,800 subjects aged 20-40 years were asked to complete a questionnaire evaluating the extent of cold extremities. Values of cold extrem...

OBJECTIVES This report describes the thermal stresses and strains during competitive singles tennis. METHODS Thermoregulatory responses were investigated during best of three set tennis matches among 25 players. A total of 86 observations were made from 43 matches played, covering each season, with ambient temperatures ranging from 14.5 to 38.4 degrees C. Core body temperature and skin temper...

in this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. the objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. the combination of firefly algorithm, parti...

Abstract The objective of our experiment was to investigate the rheological properties a compound coating depending on pre-treatment temperature regimes. Compound samples were measured at six different temperatures with 2 °C resolution between 40 and 50 °C. One part melted by RV1 rotational rheometer actual melting other filled into 9 × mm cubes molds. These cooled 24 h in freezer (−18 °C) next...

In this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. The objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. The combination of firefly algorithm, parti...