نتایج جستجو برای: radiochemical

تعداد نتایج: 1803  

Journal: :Journal of Nuclear and Radiochemical Sciences 2002

Journal: :Journal of chromatography. B, Biomedical applications 1995
J N Stolk R A De Abreu A M Boerbooms D G de Koning R de Graaf P J Kerstens L B van de Putte

Purine enzyme activities are usually assayed by radiochemical procedures and often TLC is part of the separation method. In screening patients with rheumatic diseases, these procedures have shown disadvantages like a relatively large coefficient of variation (C.V.) and time-instability. We describe a non-radiochemical reversed-phase HPLC micro-method with UV detection for measurement of activit...

2005
C. I. JOHNSTON

1. A synthetic 3-([14C]valine)-labelled tetradecapeptide renin substrate was used to measure renin concentration. Renin liberated "4C-labelled angiotensin I, which was separated from the labelled substrate by paper chromatography. The conversion ofsubstrate into angiotensin I was quantitated by liquid-scintillation counting of radioactivity. 2. The rate of conversion of the substrate into angio...

2005
S. Rajendran R. N. Ambade

Tera Becquerel quantities of a number of radioisotopes such as 131I, 99Mo, 32P, 153Sm, 51Cr, 82Br, 203Hg, 140La, 46Sc, etc. are produced in various radiochemical forms and regularly supplied through Board of Radiation & Isotope Technology (BRIT) for applications in medicine, industry, biology, agriculture and research & development activities. These radioisotopes are produced by neutron activat...

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