Study of immunogenetic aspect of alpha-one antitrypsin phenotypes in different chest diseases

The relation between alpha 1-antitrypsin and some pulmonary diseases was studied. We studied 66 patients suffering from 3 common chest disease: Bronchial asthma [25 patients], chronic bronchitis [16 patients], bronchiectasis [25 patients] and 15 as control. They all were subjected to chest X-ray, C.B.S, ESR, quantitative determination of serum alpha 1-antitrypsin by radial immunodiffusion method and alpha 1-antitrypsin phenotyping by immunofixation electrophoresis. A second serum alpha 1-antitrypsin after 3 weeks of treatment was carried out. Serum alpha 1-antitrypsin in all patients was significantly higher than normal at initial estimation. After treatment it dropped to normal level. Serum alpha 1-antitrypsin was signifIcantly decreased than normal in bronchial asthma patients. MM phenotype was the commonest, it was found in all control, in 85% of chronic bronchitis, 80% of bronchiectasis. In asthmatic other Pi variants [MS, MZ, SS] known to be alpha 1-antitrypsin deficient in most cases. Among 66 studied 24.6% had other phenotype variant than the PiM. These Pi variants were heterozygous defecient in alpha 1-antitrypsin, and presented as recurrent chest infection or bronchial asthma

Crystal-field effects on the transport properties of rare-earth intermetallic compound PrAl3

Low temperature [4.2-80 K] measurements on the thermal conductivity of the rare-earth intermetallic compound PrA 1[3] are reported. We interested in the magnetic part of the resistivities crystal-field effects. For this purpose, the isostructural compound LaA[3]- is used as the nonmagnetic counter part of PrAI[3]. The measurements show evidence of CEF effects on transport properties of the rare-earth intermetallic compound PrAI 3] containing magnetic ions. The thermal conductivity obey the calculations of Andreef in small range of temperature

Plastics as solid state nuclear track detector for [P] reaction

[P, alpha] reaction on 27[Al] has been investigated at a low proton energy using solid state nuclear track detectors. The 11.800 MeV level of 28[Si] has been studied

Energy distribution of backscattered electrons from bulk targets by Monte-Carlo method

A Monte-Carlo method was used to calculate the energy distribution of the backscattered electrons and its variation with the electron angle of incidence, the atomic number and the composition of the target materials. The calculations are restricted to an electron energy of 30 keV It is shown that the energy spectrum depends strongly on the incidence angle of the electron and the wan atomic number of the target