摘要:

The counter stand is described. As main counter, a gas needle counter, working in conditions of deep reduced proportionality is used. The counter characteristics and experimental as well as theoretical results of the gas amplification analysis are given. The detection efficiency is equal to 100 per cent in the case of samples 10 mm in diameter, and reaches 85 per cent in the case of maximum samples with a diameter of 16 mm. The background is about to 0.04 cpm. As preliminary measurements, the radioactivity of lead, the changes of this radioactivity, the nonstimulated electron exoemission of the metallic surfaces in darkness and measurements of the87Rb half-life are reported.

ISSN:0021-1915    

DOI:10.1080/10256018608623643

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

This study comprises 106 adult men. They were classified into 3 main groups and the seminal plasma lipids, PGE, PGF2αand Zn were measured in cases of normal fertile men (32), oligospermia (43) and azoospermia (31). The seminal plasma PGEs level was significantly elevated in the group of oligospermia, while PGF2αshowed no significant changes. At the same time seminal plasma levels of phospholipids, triglycerides and Zn were significantly increased. While seminal plasma PGEs in the group of azoospermia showed an insignificantly decrease, the seminal plasma total lipids phospholipids and cholesterole showed a significant decrease. The prostaglandines PGEs (E1+ E2) and PGF2αwere estimated by radioimmunoassays.

ISSN:0021-1915    

DOI:10.1080/10256018608623645

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Thirty-six patients with chronic hepatic diseases and ten normal control subjects with matching ages were studied by various clinical, laboratory and histopathologic means. Estimation of serum levels of thyroid hormones and thyroid stimulating hormones (TSH) showed that the average values of rT3, T4and TSH were higher in the group of chronic liver disease as compared to the controls. In the meantime, the average value of T3for those presenting with liver affection was lower than the controls. The severity of changes was most marked in the group of established cirrhosis followed by that of hepato-splenic schistosomiasic and chronic active hepatitis in that order of frequency.

ISSN:0021-1915    

DOI:10.1080/10256018608623646

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The isotope effect has been measured for surface diffusion of potassium isotopes on polycrystalline tungsten using ion thermoemission noise method. It has been noted that the isotopic ratio41K/39K obtained by measurement of noise component is different from isotopic ratio for DC component. This shift was interpreted as isotope fractionation effect in surface diffusion of adsorbed potassium. It was found that the spectral density function of the ion current fluctuation can be approximate by the Lorentzian function S = S0/1 + (ωτ)2.

ISSN:0021-1915    

DOI:10.1080/10256018608623647

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0021-1915    

DOI:10.1080/10256018608623648

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The exchange reaction between Ba14CO3and some alkali metal carbonates has been studied in detail in a trial to find out the appropriate experimental conditions for preparing14C-labelled oxalates. It has been found that the best results could be achieved by heating the reaction mixture at 390°C for 6 hours. The used Ba14CO3could be quantitatively recovered and recycled again in another exchange process.

ISSN:0021-1915    

DOI:10.1080/10256018608623649

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0021-1915    

DOI:10.1080/10256018608623650

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0021-1915    

DOI:10.1080/10256018608623651

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor