Some observations on cooling in laboratory autoclaves.

Design and construction of evaporative local cooling coatings and evaluate their efficiency in improving some perceptual indicators in laboratory conditions

Introduction: One way to reduce the level of heat strain is to use personal evaporative cooling coats. such as the wrist, ankle, head and neck. The purpose of this study is to design, construct, and determine the cooling power of local cooling coatings and evaluate their efficiency in improving perceptual indicators in the laboratory. Materials and Methods: Initially, the design and constructio...

Effectiveness of Bench Top Non-Vacuum Autoclaves on Dental Turbine Chamber Sterilization

Introduction: Dental turbine chamber is a suitable reservoir for living microorganisms, so chamber sterilization is necessary for reducing cross contamination risk. On the other hand, in non-vacuum autoclaves, steam penetration into turbine chamber is doubtful, while they are still in use in dental clinics. In this study, performance of small non-vacuum autoclave in turbine chamber sterilizatio...

Shape optimization of impingement and film cooling holes on a flat plate using a feedforward ANN and GA

Numerical simulations of a three-dimensional model of impingement and film cooling on a flat plate are presented and validated with the available experimental data. Four different turbulence models were utilized for simulation, in which SST  had the highest precision, resulting in less than 4% maximum error in temperature estimation. A simplified geometry with periodic boundary conditions is de...

Some Observations on Clostridium perfringens Strains Isolated in IRAN

ar X iv : a st ro - p h / 01 10 59 8 v 1 2 9 O ct 2 00 1 Galaxy Clusters : Cosmic High - Energy Laboratories to Study the Structure of Our Universe Hans

This contribution illustrates the study of galaxy clusters as astrophysical laboratories as well as probes for the large-scale structure of the Universe. Using the REFLEX Cluster Survey, the measurement of the statistics of the large-scale structure on scales up to 500 h Mpc is illustrated. The results clearly favour a low density Universe. Clusters constitute, in addition, well defined astroph...