نتایج جستجو برای: faulting radioactivity

تعداد نتایج: 12605  

2003
Kush Tandon

To constrain the timing of rifting in the western, eastern, and northern parts of the Alboran Sea basin, seismic reflectors, corresponding to biostratigraphic boundaries and unconformities from the Miocene to Recent, are correlated using synthetic seismograms. Regions of adjacent coeval compression and extension are found in the Alboran Sea basin. Normal faulting continues in parts of the easte...

Journal: :international journal of environmental research 2013
i. guagliardi g. buttafuoco c. apollaro a. bloise r. de rosa

gamma-rays emitted from the ground surface relate to the primary mineralogy and geochemistryof the bedrock, and the secondary weathered materials. this information can contribute significantly to anunderstanding of the geochemical and pedogenetic history of a region. the main aim of this paper was to study the relationship between ground gamma-ray data and basement geochemistry in the lese catc...

2008

Very soon after the discovery of radioactivity, measurements of the heavy radioactive elements existing in nature were undertaken to determine the age of rocks (Rutherford 1904), but only when Professor Willard Libby in an evening lecture during the first United Nations Conference on the Peaceful Uses of Atomic Energy in Geneva in 1955 described how he and his research team had evolved the carb...

Journal: :New Zealand Journal of Geology and Geophysics 1963

Journal: :The Journal of Geology 1919

2016
Kayako Isohashi Eku Shimosegawa Sadahiro Naka Yasukazu Kanai Genki Horitsugi Ikuko Mochida Keiko Matsunaga Tadashi Watabe Hiroki Kato Mitsuaki Tatsumi Jun Hatazawa

BACKGROUND In boron neutron capture therapy (BNCT), positron emission tomography (PET) with 4-borono-2-18F-fluoro-phenylalanine (FBPA) is the only method to estimate an accumulation of 10B to target tumor and surrounding normal tissue after administering 10B carrier of L-paraboronophenylalanine and to search the indication of BNCT for individual patient. Absolute concentration of 10B in tumor h...

Journal: :asia oceania journal of nuclear medicine and biology 0
mana akamatsu department of medical technology, kyushu university hospital, japan yasuo yamashita department of medical technology, kyushu university hospital, japan go akamatsu institute of biomedical research and innovation, japan yuji tsutsui department of medical technology, kyushu university hospital, japan nobuyoshi ohya department of medical technology, kyushu university hospital, japan yasuhiko nakamura department of medical technology, kyushu university hospital, japan

objective: the aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in 123i brain spect obtained by the hybrid spect/ct device. methods: we used the 3-dimensional (3d) brain phantom, which imitates the precise structure of gray mater, white matter and bone regions. it was filled with 123i solution (20...

Journal: :The Journal of Geology 1920

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