Results 21 to 30 of about 524,178 (315)

Simultaneous multi-nuclide imaging via double-photon coincidence method with parallel hole collimators

open access: yesScientific Reports, 2021
Multi-tracer imaging can provide useful information in the definitive diagnosis and research of medical, biological, and pharmaceutical sciences. Single-photon emission computed tomography (SPECT) is one of the nuclear medicine imaging modalities widely ...
Mizuki Uenomachi   +3 more
doaj   +1 more source

Ascertaining gamma ray dosage sensitivity of in vitro cultures in banana cv. Ney Poovan (Musa AB)

open access: yesElectronic Journal of Plant Breeding, 2021
In a vegetatively propagated and parthenocarpic crop like banana, the mutation breeding method offers considerable scope to create genetic variability for crop improvement.
C.Y. Shalini Udaya, K. Soorianathasundaram, M. Ganga, P. Paramaguru and U. Sivakumar
doaj   +1 more source

New applications and developments in the neutron shielding

open access: yesEPJ Web of Conferences, 2017
Shielding neutrons involve three steps that are slowing neutrons, absorption of neutrons, and impregnation of gamma rays. Neutrons slow down with thermal energy by hydrogen, water, paraffin, plastic. Hydrogenated materials are also very effective for the
Uğur Fatma Aysun
doaj   +1 more source

Radiation effect on germination and seedling traits in rice (Oryza sativa L.)

open access: yesElectronic Journal of Plant Breeding, 2019
The biological effect of new source of physical mutagen viz., electron beam over gamma rays were studied with different dosages in the M1 generation of rice during 2017-18.
R. Lalitha   +6 more
doaj   +1 more source

Gamma rays from dark matter [PDF]

open access: yes, 2001
I give a brief review of high energy gamma-ray signatures of dark matter. The decay of massive $X$-particles and subsequent hadronization have been suggested as the origin of the highest energy cosmic rays.
Protheroe, R., Raymond J. Protheroe
core   +1 more source

Gamma-ray luminosity properties of gamma-ray pulsars [PDF]

open access: yesAstronomy & Astrophysics, 2004
Based on a new self-consistent outer gap model, we statistically study luminosity properties of gamma-ray pulsars with ages of less than or equal to2 x 10(7) yr in the Galaxy as well as those with ages of less than or equal to5 x 10(6) yr in the Gould belt using a Monte Carlo method, where the gamma-ray beaming effect has been included.
L. Zhang, Z. X. Han, Z. J. Jiang
openaire   +1 more source

Probit analysis and effect of electron beam and gamma rays in blackgram (Vigna mungo (L.) Hepper)

open access: yesElectronic Journal of Plant Breeding, 2017
An experimental investigation was carried out to determine the lethal dose (LD50) of electron beam and gamma rays on two black gram varieties viz., MDU 1, VBN (Bg) 4. The lethal dose was determined by probit analysis. Dry seeds of both the varieties were
K. Veni   +2 more
doaj   +1 more source

GAMMA-RAY OBSERVATIONS OF GAMMA-RAY BINARIES

open access: yesInternational Journal of Modern Physics: Conference Series, 2014
Gamma-ray binaries are binary systems that emit most of their radiative output above 1 MeV. Following the detection of five such systems in the past decade, they have been clearly established as a population of galactic GeV and TeV sources. In this review I discuss their recent gamma-ray observational results from Cherenkov telescopes and the Fermi ...
openaire   +2 more sources

EFFECT OF GAMMA IRRADIATION,METHYL METHANE SULPHONATE AND THEIR COMBINATIONS ON GROWTH, FLOWERING AND INDUCED VARIABILITY IN Tagetes erecta, L. [PDF]

open access: yesJournal of Plant Production, 2000
Seeds of Tagates erecta. were irradiated with different doses of gamma-rays ( 0,5,10 and 15 kr.),  other part of seeds was treated with different levels of MMS ( 0.0, 0.1, 0.2, 0.3,0.4, 0.5 and 1.0%) .
Fatma El-Tony   +3 more
doaj   +1 more source

GAMMA-RAY BURSTS [PDF]

open access: yesParticles, Strings and Cosmology (PASCOS 99), 2000
Ultra-high-energy, >10^19 eV, cosmic-ray and high energy, ~10^14 eV, neutrino production in GRBs is discussed in the light of recent GRB and cosmic-ray observations. Emphasis is put on model predictions that can be tested with operating and planned cosmic-ray and neutrino detectors, and on the prospects of testing for neutrino properties.
openaire   +2 more sources

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