Nuclear Science and Technology
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
The public committed effective dose caused by consumption of foods & foodstuffs in Ninh Thuan
Nuclear Science and Technology - Tập 4 Số 4 - 2014
Based on the data set about radionuclides concentration in foods and foodstuffs obtained from the implementation of the National Projects on “Investigation on radionuclides and toxic elements concentration in the main kinds of foods & foodstuffs of Vietnam” and “Assessment of Marine Environmental Radioactivity Status for two selected sites of Nuclear Power Plant in the near future at Ninh Thua...... hiện toàn bộ
#Public committed effective doses #Foods & foodstuffs
Some initial results of simulating a positron beam system by using SIMION
Nuclear Science and Technology - Tập 7 Số 3 - 2017
Slow Positron Beam (PB) is an important device in the study of positron physics and techniques, especially in material research. For the purpose of conceptual designing a PB system, we have simulated a PB system with the parameters of an existing system – SPONSOR, using SIMION software. The simulation results have been compared with the SPONSOR published results. The effect of magnetic field...... hiện toàn bộ
#SIMION #positron beam #simulation
Study the influences of the radionuclide depth distributions on the FEPE for the measurements of the soil activity using in situ HPGe gamma spectrometry
Nuclear Science and Technology - Tập 7 Số 2 - 2017
In this work, the influences of the soil densities and the radionuclide depth distributions (RDD) on the Full Energy Peak Efficiency (FEPE) calculation of the in-situ gamma ray spectrometer using the In Situ Object Counting Systems (ISOCS) software were studied. The data of the RDDs at the sites were investigated by using laboratory HPGe gamma spectrometer. Six different RDDs of 40K, 226Ra and 232...... hiện toàn bộ
#HPGe gamma spetrometer #radionuclide depth distributions #full energy peak efficiency
MULTI-OBJECTIVE OPTIMIZATION OF FUEL RELOADING PATTERNS FOR RESEARCH REACTORS BY GENETIC ALGORITHMS
Nuclear Science and Technology - Tập 1 Số 3 - 2011
This paper presents an application of a genetic algorithm (GA) to the fuel reload optimization for a research reactor. In this work, a model of the problem and a new coding procedure for the GA to automatically search for optimal fuel loading patterns most suitable for the research reactor is proposed. The objective function maximizes the effective multiplication factor and minimizes the power pea...... hiện toàn bộ
#Research reactor #fuel reload optimization #genetic algorithms #elitism strategy
COSMIC RAY MEASUREMENTS EMPLOYING PLASTIC SCINTLLATION DETECTORS AND FLASH-ADC/FPGA-BASED READOUT SYSTEM
It is known that secondary cosmic rays are high energetic particles which are products of shower particles, when primary cosmic rays from outer space hit the atmosphere molecules. Many studies of cosmic rays show that cosmic flux depends on the depth of atmosphere. At ground level, most secondary cosmic rays are muons, a type of charged particle, and have angular dependence. The purpose of this ar...... hiện toàn bộ
#Angular distribution #cosmic rays #Flash-ADC #FPGA #LabVIEW
Particle identification for Z = 25 – 28 exotic nuclei from seastar experimental data
Nuclear Science and Technology - Tập 7 Số 2 - 2017
The particle identification (PID) method based on TOF-Bρ-ΔE measurement at RIKEN are discussed, and its application for Z = 25 – 28 neutron-rich nuclei from SEASTAR (Shell Evolution And Search for Two-plus energy At RIBF) experimental data are presented. The results including the PID for beam and residual nucleus at BigRIPS and ZeroDegree, respectively, demonstrate that the reactio...... hiện toàn bộ
#SEASTAR #particle identification #BigRIPS #ZeroDegree
RADIONUCLIDES CONCENTRATION IN THE MAIN KINDS OF FOODS & FOODSTUFFS IN SOME ECOLOGICAL REGIONS OF VIETNAM
Nuclear Science and Technology - Tập 2 Số 2 - 2012
To acquire the existence of natural and artificial radionuclides in the main kinds of foods & foodstuffs samples is a necessary task for assessing the environment impact. For this reason, the Ministry of Science and Technology had approved a project on “Investigation on radionuclides and toxic elements concentration in the main kinds of foods & foodstuffs of Vietnam”. The paper focused on:...... hiện toàn bộ
#Radionuclides #Foods & foodstuffs #International Commission for Radiological Protection (ICRP) #Food and Agriculture Organization (FAO)
Study on gamma-irradiation degradation of chitosan swollen in H₂O₂ solution and its antimicrobial activityfor E. coli
Nuclear Science and Technology - Tập 3 Số 4 - 2013
Degradation of chitosan in swollen state with hydrogen peroxide solution (5% w/v) by γ-irradiation was investigated. Molecular weight (Mw) of irradiated chitosan was determined by gel permeation chromatography (GPC). Fourier transform infrared (FT-IR) and ultraviolet-visible (UVvis) spectrawere analyzed to study the structure changes of degraded chitosan. The results showed that the chitosan of lo...... hiện toàn bộ
#Chitosan #degradation #E. coli #gamma-irradiation #hydrogen peroxide
Radioactivity of some natural and artificial radionuclides in coastal seawater at Ninh Thuan, Ba Ria - Vung Tau and Ca Mau provinces in 2018
Nuclear Science and Technology - Tập 10 Số 2 - 2020
Radioactivities of some natural (Ra-226, Th-232, U-238, Po-210) and artificial (Cs-137, Sr-90 and Pu-239,240) radionuclides in coastal seawater at monitoring points of Ninh Thuan, Ba Ria - Vung Tau and Ca Mau provinces were analyzed quarterly in the year of 2018. Radioactivities of Ra-226, Th-232, U-238, and Cs-137 had been determined by simultaneous precipitation method and measured on low-level ...... hiện toàn bộ
#Natural radionuclide #artificial radionuclide #radioactivity in coastal seawate
Recent updates on perturbation analysis of the KALIMER-600 TRU burner
Nuclear Science and Technology - Tập 3 Số 3 - 2013
Sodium void worth and the Doppler coefficient, which are very important safety parameters in safety analysis of the KALIMER-600 TRU burner, should be carefully evaluated. A perturbation analysis for the TRU burner has thus been performed using the perturbation method, not only to make sure the reactivity feedbacks meet the predetermined design targets but also to obtain insight into the actual phy...... hiện toàn bộ
#TRU burner #sodium void worth #Doppler effect #perturbation method #PERT-K #DIF3D #isotope-wise reactivity
Tổng số: 355
- 1
- 2
- 3
- 4
- 5
- 6
- 10