نتایج جستجو برای: alpha spectrometry
تعداد نتایج: 296808 فیلتر نتایج به سال:
In this research, our aim was to isolate and characterize the substance known as "meat factor," which is reported to enhance nonheme iron absorption. We used various analytical techniques, and the final step was a human study to measure the effect of a candidate compound on iron absorption. Lean beef was selected for study, as it is known to increase nonheme iron absorption. Cooked ground beef ...
Introduction Fibrinogen A alpha chain amyloidosis is an autosomal dominant disease associated with mutations in the fibrinogen A alpha chain (FGA) gene, and it is the most common cause of hereditary renal amyloidosis in the UK. Patients typically present with kidney impairment and progress to end-stage renal disease over a median time of 4.6 years. Methods Six patients presented with proteinu...
PURPOSE To develop a general tissue preparation protocol for MALDI (Matrix-Assisted Laser Desorption Ionization) imaging mass spectrometry of ocular lens tissue, and to compare the spatial distributions of alpha-crystallin and its modified forms in bovine and rabbit lenses. METHODS Frozen bovine and rabbit lenses were cryosectioned equatorially at -20 degrees C into 12 microm-thick tissue sec...
در این پایان نامه یک روش عددی برای حل معادلات کسری-زمانی و کسری-فضایی برگر egin{equation*} d_t^{alpha}u+varepsilon uu_{x}= u u_{xx}+eta d_x^{eta}u, end{equation*} معادله ی کسری-زمانی و کسری-فضایی پوآسن egin{equation*} d_x^{eta}u + d_t^{alpha}u = f(x,t), end{equation*} و معادله ی کسری-زمانی انتشار egin{equation*} d_t^alpha u+u=k abla^2 u + f(x,t), end{equation*} ...
Different source preparation procedures for determination of uranium radioisotopes in environmental samples by alpha spectrometry are presented. Addition 232 U tracer was followed the preconcentration radionuclides interest from co-precipitation on Fe(OH) 3 at pH 9 using ammonia solution. The extracts were obtained column separation UTEVA resin after which sources prepared either electrodeposit...
Oxidation of side chain of 5 beta-cholestane-3 alpha,7 alpha,12 alpha-triol was studied in a patient with cerebrotendinous xanthomatosis (CTX) and in control subjects, using various subcellular fractions of liver homogenate and a method based on isotope dilution-mass spectrometry. In the control, 5 beta-cholestane-3 alpha,7 alpha,12 alpha-triol was converted into 5 beta-cholestane-3 alpha,7 alp...
The accurate determination of the levels 210Pb in environmental samples (e.g. atmospheric aerosols, waters, soils, biota, etc.) is essential due to its multiple applications geochronology, radiation protection, groundwaters flows, air masses movement, etc. For this purpose, it has been developed a novel and thorough study three alternative radiometric measuring methods activity concentrations s...
Canine liver alpha-L-fucosidase was purified to apparent homogeneity by affinity chromatography on agarose-epsilon-aminohexanoyl-fucopyranosylamine. It is composed of multiple forms of a common active subunit of 45-50 kDa, which can aggregate in different combinations to form polymers, predominantly dimers. Antiserum was raised against the purified enzyme. There is negligible residual alpha-L-f...
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