Neutron Activation Analysis (NAA) I. Basis of NAA I·1 Fundamental theory
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...
متن کاملCarbon-Zeolite NaA Composite Membranes
Zeolites are crystalline microporous materials with well-defined and uniform pore structure that find extensive industrial uses as adsorbents, catalysts and ion exchangers [1-2]. Zeolite films supported on different materials have been successfully prepared and have potential applications as highly selective membrane separators, membrane reactors, chemical sensor and microdevices [3-10]. Most o...
متن کاملThe biological functions of Naa 10
N-terminal acetylation (NTA) is one of the most abundant protein modifications known, and the NAT machinery is conserved throughout all Eukarya. Over the past 50 years, the function of NTA has begun to be slowly elucidated, and this includes the modulation of protein-protein interaction, protein-stability, protein function, and as well as protein targeting to specific cellular compartments. Man...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 1994
ISSN: 1884-4111,0033-8303
DOI: 10.3769/radioisotopes.43.41