نتایج جستجو برای: beryllium compounds
تعداد نتایج: 229129 فیلتر نتایج به سال:
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
This Guideline provides the clinical diagnostic criteria for beryllium sensitization and chronic beryllium disease (CBD; old term = berylliosis), based on the latest available medical literature and consultation with leading experts in the field. This Guideline does not address exposure prevention, workplace safety, or treatment. In addition, this Guideline is not intended to supplant all adjud...
At the Ninth International Congress on Industrial Medicine Policard (1948) reported the production of granulomata in the lungs of rats and guinea-pigs by dusting with beryllium oxide. Details of the particle size of the dust were not given. Policard claimed that hyperplasia of the mesenchymatous cells of the lung after dusting with beryllium oxide resulted in three types of response (1) histioc...
Comparative growth measurements of the mycobacterial species Mycobacterium phlei and Mycobacterium tuberculosis were carried out with liquid cultures supplemented with oxalatoberyllate ions in the concentration range 0-120 microM Be. For both species, the effect of beryllium on specific growth parameters can be represented by a Be concentration-dependent, exponential expression. Evidence for be...
Total cross sections for Σ− and π− on beryllium, carbon, polyethylene and copper as well as total cross sections for protons on beryllium and carbon have been measured in a broad momentum range around 600GeV/c. These measurements were performed with a transmission technique adapted to the SELEX hyperon-beam experiment at Fermilab. We report on results obtained for hadron-nucleus cross sections ...
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