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Using the 90-105 keV gamma-rays for determining Pu isotopic composition is studied for dilute Pu solutions (0.0001-0.05 μg/mm) as well as Pu-U mixed solutions. It is shown that for concentrations higher than 0.001 μg/mm Pu, results match well with those of mass spectrometric results. However, in mixed solutions, beyond 0.005 mg/mm U concentration, the errors on isotopic compositions of Pu increased as U content increased.
This article was published in the following journal.
Name: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine
Method for determination of plutonium isotopes in various environmental samples is presented. The separation and purification of plutonium is attained by extraction chromatography with triisooctylamin...
Neutron fields produced by an accelerator-driven neutron source are generally mixed radiation fields that consist of fast neutrons and gamma rays. To estimate the biological effects of fast neutrons p...
Plutonium(IV) oxide nanoclusters represent an interesting scientific problem regarding structure-function relationships and are also relevant to global concerns surrounding plutonium reprocessing, the...
Determination of Spontaneous Dicentric Frequencies and Establishment of Dose-response Curves after Expose of Human Peripheral Blood Lymphocytes to Low and High Dose Rate Co Gamma Rays - The Basis for Cytogenetic Biodosimetry in Vietnam.
The purposes of this study are to investigate spontaneous dicentric frequencies and dose response curves of dicentrics induced by gamma Co for replenishing the data sets used for biodosimetry in Viet...
The observation of the 239 keV gamma line from U decay in high-enriched uranium (HEU) samples prompted us to utilize U (with main gamma energies of its daughters at 239, 583, 763, and 860 keV) a...
This study studies labor epidural analgesia and compares dilute (0.0625%) with concentrated (0.25%) bupivacaine. We hypothesize that patients randomize to receive the concentrated drug wi...
To determine safety and tolerance of administering aerosolized recombinant interferon gamma (IFN-gamma) for 4 weeks in patients with AIDS. To examine activation of alveolar macrophages by ...
The purpose of this research study is to evaluate the safety, tolerability, and efficacy of Interferon gamma-1b (IFN-gamma 1b) when administered by subcutaneous injection over a period of ...
This study tests the effects of the Neuro RX Gamma on the cognitive and behavioral functioning of subjects with moderate-to-severe Alzheimer's Disease. The Neuro RX Gamma uses non-invasive...
To evaluate serum levels of gamma tocopherol and it's metabolites after 3 doses, each separated by 12 hours.
A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION.
Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source.
Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Penetrating, high-energy electromagnetic radiation emitted from atomic nuclei during NUCLEAR DECAY. The range of wavelengths of emitted radiation is between 0.1 - 100 pm which overlaps the shorter, more energetic hard X-RAYS wavelengths. The distinction between gamma rays and X-rays is based on their radiation source.
Plutonium. A naturally radioactive element of the actinide metals series. It has the atomic symbol Pu, atomic number 94, and atomic weight 242. Plutonium is used as a nuclear fuel, to produce radioisotopes for research, in radionuclide batteries for pacemakers, and as the agent of fission in nuclear weapons.