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Gamma Ray - Crossref

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Last Updated: 03 September 2022

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Combination of Dual-Energy Gamma Ray/Venturi Multiphase Flowmeter and Phase Splitter for Application in Very High Gas Volume Fraction Environment

Operators are confronted with wells that produce high water cut at low pressure and, subsequently, a high gas volume fraction in mature fields. The formation of a project team with a strong Middle East focus in order to produce an operational prototype for a production well tested campaign on a fast track basis has resulted in a generalised model that was mainly dictated by operator requirements. Test findings have shown that a gas liquid cylindrical cyclone located upstream of a dual-energy gamma ray/Venturi meter is a reliable partial separation device. The GVF at the multiphase flowmeter condition is below 90% and 90% of the inlet gas extracted by the partial separation method, and accurate measurement of the three phases is achieved.

Source link: https://doi.org/10.2118/88745-ms


EFFECT OF GAMMA RAYS ON DIFFERENT QUANTITATIVE TRAITS OF SOYBEAN JS335

To investigate the variance in M2 for the qualitative and quantitative characteristics, Soybean JS-335 was treated with 200, 250, and 300 Gy doses of gamma rays. In a non-replicated field trial to lift the M2 generation, harvested seeds of individual plants from M1 generation were planted. In all of the treatments, plant height, number of branches plant, and length of primary root were all reduced drastically. In all the treatments, the number of pods plant-1 and grain yield plant dramatically increased, and 100 seed weight significantly decreased in all the treatments, relative to control.

Source link: https://doi.org/10.35410/ijaeb.2022.5751


Enhancing the electrical properties of graphite nanoflake through gamma-ray irradiation

Abstract: To validate the predicted results of materials as well as engineering material properties in a controlled manner, understanding shifts in material properties through external stimulation is critical. The increased GnFs with gamma-ray irradiation's c-axis electrical conductance can be attributed to a decrease in interlayer spacing, although the caused defects may also play a role. This review shows that gamma-ray irradiation can be a promising way to customize the electrical properties of GnFs.

Source link: https://doi.org/10.1038/s41598-022-19232-2


Lung-Cancer Risk in Mice after Exposure to Gamma Rays, Carbon Ions or Neutrons: Egfr Pathway Activation and Frequent Nuclear Abnormality

Lung is one of the highest-risk organs for radiation-induced carcinogenesis, but the danger of secondary lung-cancer formation after particle-beam therapy and the underlying mechanism are yet to be elucidated. Mice irradiated with u22652 Gy of carbon ions or u22650. 2 Gy of neutrons, developed lung adenocarcinoma in lung adenocarcinoma much earlier than non-irradiated mice. Male mice and 2. 59 for females, with females and females displaying 1. 07 and 2. 59 for lung AC growth, and neutrons were 4. 63 and 4. 57 for neutrons, respectively. The induction of lung AC by carbon ions in males was similar to that for gamma rays in males but much higher than that for gamma rays in females, according to our results. In comparison, neutrons' effect on lung AC formation was approximately 4- to 5-fold greater than that of gamma rays.

Source link: https://doi.org/10.1667/rade-21-00192.1


Gamma-ray light curves and spectra of classical novae

Despite decades of observation, MeV u03b3-rays from novae have never been identified u2013, nor as a result of radioactive decay or diffuse Galactic emission from the nova population. We develop numerical simulations of nova explosions using sub- and near-Chandrasekhar CO white dwarfs as the progenitor in this study. For a early time evolution, we use a Monte Carlo radiative transfer code to calculate u03b3-ray light curves and spectra, with a focus on the early time evolution. The predicted 511-square-line flash at the time of the explosion is greatly reduced, revealing a maximum flux of only 10^-9 ph cm^-2 s^-1 and thus making it at least one million times fainter than estimated before. This finding would render it impossible for current MeV devices to detect novae within the first day after the explosion.

Source link: https://doi.org/10.1093/mnras/stac1672


Mechanical properties, elastic moduli, transmission factors, and gamma-ray-shielding performances of Bi 2 O 3 –P 2 O 5 –B 2 O 3 –V 2 O 5 quaternary glass system

The packing density decreased from 0. 634432 to 0. 600611, with some of the dissociation energy increasing from 51. 6125 kJ/cm 3 for the S1 glass sample to 56. 7525 kJ/cm 3 for the S4 glass sample. Linear and mass attenuation coefficients for the S4 glass sample were the highest when compared to those for glass materials tested, i. e. , S1 S3 S4 S4. For all mean free path values, our results show that increasing the amount of Bi 2 O 3 reinforcement decreased the exposure buildup factor and energy absorption factor values. The results will help the scientific community in determining the most suitable additive bismuth oxide/diboron trioxide type and related glass composition that would meet the shielding properties previously discussed in terms of design and usage requirements, as well as the most suitable glass composition.

Source link: https://doi.org/10.1515/chem-2022-0145


Diagnostic and therapeutic radioisotopes in nuclear medicine: Determination of gamma-ray transmission factors and safety competencies of high-dense and transparent glassy shields

Abstract We present the findings of an extensive review of recently developed CdO-rich and transparent glass shields for nuclear medicine installations in lieu of conventional and unfavorable materials, such as lead and concrete. The results show that adding more CdO to the glass composition improves the overall gamma-ray attenuation properties. The C40 sample containing 40% CdO demonstrated the highest gamma-ray absorption values against all radioisotopes as a result, among the heavy and transparent glasses made. The newly produced CdO-rich and transparent glass sample from medical radiation fields, where the radioisotopes tested are used in everyday clinical and research applications. It can be concluded that the newly produced CdO-rich and clear glass sample can be used in medical radiation fields.

Source link: https://doi.org/10.1515/chem-2022-0167


Gamma ray induced positive alterations in morphogenetic and yield attributing traits of finger millet (Eleusine coracana (L.) Gaertn.) in M2 generation

Finger millet, which always ensured for essential nutrients, as well as a famine tolerant crop to provide food for the global population throughout the year. In M2 generation finger millet, the present research was done to determine the amplitude and frequency of macro mutants caused by gamma radiations. Among the mutagen doses, 600 Gy doses produced maximum rise in mean values and phenotypic and genotypic coefficients of variation for the plant height, number of leaves per plant, leaf length, number of tillers per plant, number of panicles per plant, number of panicles per plant, days to 50% flowering, and 1000 seeds weight. The present research gives an insight into the optimum dose of gamma rays from a pool of doses that could be used in future breeding programs.

Source link: https://doi.org/10.14719/pst.1807


Finite Element Formulation and Simulation of Gamma Ray Attenuation of Single and Multilayer Materials Using Lead, Tungsten and EPDM

Based on the finite element method for a narrow beam geometry, a gamma ray attenuation problem presented by Beer and Lambert is developed and coded in this work. Tungsten and Ethylene Monomer systems have been tested to measure radiation shielding's effectiveness in radiation shielding, attenuation of radiation from radioactive sources, 173 Cs, with energies of 1. 273 MeV and 1. 332 MeV in single and multilayers of lead, Tungsten and Protylene Monomer systems.

Source link: https://doi.org/10.4028/p-ol4895

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions