Neutron Activation Analysis(NAA). II. NAA in biology and medicine. 1. Application of NAA in life science.
نویسندگان
چکیده
منابع مشابه
Neutron spectroscopy of water dynamics in NaX and NaA zeolites.
We have investigated the dynamics of water molecules in zeolites NaA and NaX by high-resolution quasielastic neutron scattering methods. Between 260 and 310 K, the local translational diffusive motion of water in the zeolites is one to two orders of magnitude slower than in bulk water. The Q dependence of the scattering shows effects of confinement and the presence of both relatively mobile and...
متن کاملNAA and NAAG variation in neuronal activation during visual stimulation
N-acetyl-aspartyl-glutamate (NAAG) and its hydrolysis product N-acetyl-L-aspartate (NAA) are among the most important brain metabolites. NAA is a marker of neuron integrity and viability, while NAAG modulates glutamate release and may have a role in neuroprotection and synaptic plasticity. Investigating on a quantitative basis the role of these metabolites in brain metabolism in vivo by magneti...
متن کاملCellular and developmental tissue distribution of NAA catabolic enzyme, aspartoacylase. Insights into NAA Function
Introduction NAA (N-acetyl-aspartate) is the second most abundant molecule in the CNS (after glutamate), its MRS signal is commonly used as a putative marker of viable neurones, and yet little is known about its function. Furthermore, recent data from cell culture has raised the possibility of an additional cellular contribution of NAA from nonneuronal origins, principally in isolated mature ol...
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insurers have in the past few decades faced longevity risks - the risk that annuitants survive more than expected - and therefore need a new approach to manage this new risk. in this dissertation we survey methods that hedge longevity risks. these methods use securitization to manage risk, so using modern financial and insurance pricing models, especially wang transform and actuarial concepts, ...
15 صفحه اولA compact DD neutron generator-based NAA system to quantify manganese (Mn) in bone in vivo.
A deuterium-deuterium (DD) neutron generator-based neutron activation analysis (NAA) system has been developed to quantify metals, including manganese (Mn), in bone in vivo. A DD neutron generator with a flux of up to 3*10(9) neutrons s(-1) was set up in our lab for this purpose. Optimized settings, including moderator, reflector, and shielding material and thickness, were selected based on Mon...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 1994
ISSN: 1884-4111,0033-8303
DOI: 10.3769/radioisotopes.43.99