نتایج جستجو برای: nuclear techniques

تعداد نتایج: 855049  

2005
J. Mañá M. van Kroonenburgh

Nuclear imaging techniques play a role in the assessment and management of patients with sarcoidosis. A variety of radiopharmaceuticals have been introduced for this purpose since the late 1970s. The present chapter focuses on these radiopharmaceuticals, scintigraphic imaging techniques, and their role and clinical value in sarcoidosis. Correlation with other imaging modalities, biochemical par...

2009
G. Akana D. Blackfield S. Nelson A. Paul J. Sullivan L. Wang J. Watson J. Weir

2016
G. Blondiaux J. Debrun

This paper will present the application of Rutherford backscattering spectrometry to thin film steochiometry determination and application to optimization of the film process elaboration in the case of dielectric films (Ge,Pb,O) and ionic conductors films (Na,Al,O). After we shall present the application of particles induced gamma emisson (PIGE) for the characterization of ternary compounds @,S...

2011
Leonardo Carmezini Marques Carlos Roberto Appoloni Celso Peres Fernandes

In this paper nuclear techniques were used to describe the structural characteristics of ceramic samples. These samples were produced mainly with silica to simulate sandstones. Three sets of samples with different characteristics were analyzed using gamma ray transmission to obtain point by point porosity and X-ray microtomography to obtain the porosity, for 2D sections and the scanned bulk, as...

2000
Xiwen Zhu Ximing Fang Xinhua Peng Mang Feng Kelin Gao Fei Du

We have tested complementarity for the ensemble-averaged spin states of nuclei C in the molecule of 13CHCl3 by the use of the spin states of another nuclei H as the path marker. It turns out that the wave-particle duality holds when one merely measures the probability density of quantum states, and that the waveand particle-like behavior is simultaneously observed with the help of measuring pop...

2010
Irving O. Morales P. Van Isacker V. Velazquez J. Barea J. Mendoza-Temis J. C. López Vieyra J. G. Hirsch A. Frank

Irving O. Morales,1 P. Van Isacker,2 V. Velazquez,3 J. Barea,4 J. Mendoza-Temis,1 J. C. López Vieyra,1 J. G. Hirsch,1 and A. Frank1 1Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, 04510 México, D.F., Mexico 2Grand Accélérateur National d’Ions Lourds, CEA/DSM–CNRS/IN2P3, Boı̂te Postale 55027, F-14076 Caen Cedex 5, France 3Facultad de Ciencias, Universidad Nacional Autón...

2004
H. ZAIDI

The use of the Monte Carlo method to simulate radiation transport has become the most accurate means of predicting absorbed dose distributions and other quantities of interest in radiation treatments of cancer patients using either external or radionuclide radiotherapy. This trend has continued for the estimation of the absorbed dose in diagnostic procedures using radionuclides as well as the a...

2007
R. A. El-Motaium

Environmental pollution has become a world wide concern. One of the main sources of such pollution is sewage wastewater and sludge. Their utilization without proper treatment can pollute the ecosystem (plant, soil, surface and ground water). Sewage wastewater and sludge contains several pollutants such as: pathogens, toxic organic compounds, heavy metals, high level of BOD & COD, seed weed. The...

2009
Marina V. FRONTASYEVA

Place and role of nuclear analytical techniques (NATs) in life sciences is discussed. Examples of radioanalytical investigations at the IBR-2 pulsed fast reactor in Dubna illustrate the environmental, biomedical, geochemical and industrial applications of instrumental neutron activation analysis.

2010

The greatest natural resource on the Planet, the World Ocean is both the origin of most life forms and the source of survival for hundreds of millions of people. Pollution of the oceans was an essential problem of the 20th century that was associated with the rapid industrialization and unplanned occupation of coastal zones It continues to be a concern in the 21st century. The most serious envi...

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