S. Gil, J. Góral, J. Ochman, M. Saternus Department of Metallurgy, Silesian University of Technology, Katowice, Poland A gasodynamic study of a model of hood space was performed based on measurements of velocity and concentration distributions of gases. The experiments have shown that the absolute values of gas velocities in the hood and the outlet channel as well as their profi les do not depe...

HRT-HOOD has methodological strengths that deserve to be preserved in the face of the commercial decline of HOOD technology. The UML meta-model, on the other hand, has a level of flexibility that makes it an especially attractive platform to express the specific real-time design minded features of the HRT-HOOD method. The objectoriented connotation of the method that results from mapping HRT-HO...

S. Gil, J. Góral, J. Ochman, M. Saternus, W. Bialik, Department of Metallurgy, Silesian University of Technology, Katowice, Poland In the paper, results of a model study on the effects of the air delivery and flue gas removal method on the intensity of gas blending in the hood space are presented. Two design solutions were compared: with one or two outlet channels for the hood gases. Moreover, ...

A prospective study of the use of a laminar flow cabinet, an exhaust-ventilated safety hood, and the open bench for the microbiological examination of blood is described. Blood samples from 1600 patients were subcultured on the open bench, 2700 in a safety hood, and 2607 in a laminar flow cabinet. Use of the laminar flow cabinet produced a significantly greater level of contamination than the o...

The Scirtothrips genus-group is here considered to comprise 11 genera, and an identification key to these is presented. These genera are Ajothrips Bhatti, Anascirtothrips Bhatti, Biltothrips Bhatti, Cercyothrips Morgan, Drepanothrips Uzel, Ephedrothrips zur Strassen, Kenyattathrips Mound, Parascirtothrips Masumoto & Okajima, Scirtidothrips Hood, Scirtothrips Shull and Siamothrips Okajima. One g...

The flow patterns of an exterior circular hood subject to the influence of various uniform cross drafts were experimentally studied in an apparatus consisting of hood-model/wind-tunnel assembly. A two-component laser Doppler anemometer was employed to measure the velocity field on the symmetry plane. The streamline patterns were obtained from the measured velocity data. The cross draft caused a...

Effects of flange size on the flow patterns of an exterior circular hood subject to the influence of various uniform cross drafts were studied in an apparatus consisting of hood-model/wind-tunnel assembly. The cross draft to suction velocity ratio covered the range from 0.056 to 0.792. The flange width to hood diameter ratio spanned from 1.2 to 3.0. The hood equipped without flange was also pro...

the issue of muhammad's illiteracy and the issues around it have been important debatable topics for a long time. this issue has both positive and negative news. opponents commonly attribute ommy to ommolghora that is the same mecca. however, advocates emphasize to prophet's illiteracy based on verse 48 (spider) and other qur'anic verses. there abundance of historical and anecdot...