نتایج جستجو برای: mcnp 4a
تعداد نتایج: 6956 فیلتر نتایج به سال:
As the input of MCNP code (Monte Carlo N - Particle code system), a monoenergetic and isotropic point source with the energy rangeg from 0.3 to 10 MeV was placed at the center of a spherical material surrounded by another one. The first shielding material was water and the second one was lead. The total thickness of the shield varied between 2 to 10 mfp. Then, using the output of MCNCP, exposur...
eIF-4B is a eukaryotic translation initiation factor that is required for the binding of ribosomes to mRNAs and the stimulation of the helicase activity of eIF-4A. It is an RNA-binding protein that contains a ribonucleoprotein consensus sequence (RNP-CS)/RNA recognition motif (RRM). We examined the effects of deletions and point mutations on the ability of eIF-4B to bind a random RNA, to cooper...
Genetic algorithms (GA) are used to optimize the Fast Neutron Source (FNS) core fuel loading maximize a multiobjective function. The FNS has 150 material locations that can be loaded with one of three different materials resulting in over 3E+71 combinations. individual designs evaluated computationally intensive calls MCNP. To speed up optimization, convolutional neural networks (CNN) trained a...
To locate the genes controlling adaptability in bread wheat using AMMI (additive main effect and multiplicative interaction) model, twenty-one substitution lines derived from the parents Chinese Spring (recipient) and Chayan (donor) were used in a randomized complete block design with three replications in three different environments in the Agricultural College of Razi University, Kermanshah, ...
Prompt-gamma activation analysis (PGAA) has been extended and validated to measure large irregularly shaped samples. The detailed sample geometry was implemented in the MCNP-model of setup accurate matrix-effect corrections were obtained.
چکیده روغن اسانسی اندام های هوایی دو گونه گیاهی ایران از خانواده نعنائیان (nepeta persica، nepeta asterotricha) به دو روش تقطیر با آب و head space به دست آمد و ترکیبات موجود در آن ها به وسیله کروماتوگرافی گازی همراه با طیف سنجی جرمی جداسازی و شناسایی گردید. در روغن اسانسی حاصل از اندام هوایی n. persica، 18 ترکیب از 22/92% کل اسانس شناسایی شد و محصولات عمده (5/16%) 4a?, 7?, 7a? nepetalactone، ...
First posted August 26, 2021 For additional information, contact: Director, Earth Resources Observation and Science Center U.S. Geological Survey47914 252nd Street Sioux Falls, SD 57198Contact Pubs Warehouse This report addresses system characterization of the China-Brazil Satellite-4A (CBERS–4A) multispectral remote sensing satellite is part a series reports produced delivered by Survey Cal/Va...
The Paper describes basic information about MCNP calculations and experimental measurements at the VR-1 reactor and their evaluation. The preparation of calculations and verification of the experiments are integral part of the VR-1 reactor operation. The neutronics calculations and analyses are often necessary condition to gain the approval to experiments realization at the reactor VR-1. The pa...
This document presents the process for a new method developed characterization of delayed gamma-ray radiation fields in pulse reactors like Annular Core Research Reactor (ACRR). The environments used to test this ACRR Central Cavity were various standard irradiation configurations that amounts moderators and shielding. All environment same fission product source energy spectrum. required use si...
Abstract The Cs 2 LiYCl 6 :Ce crystal (CLYC) is an inorganic scintillator which has been developed for the γ-ray and neutron measurement with high detection efficiency, resolution, no need unfolding technique. To enhance of fast neutron, CLYC 7 Li-enrichment (CLYC7) developed. In this work, response CLYC7 detector to obtained using 137 calibration source calculated Monte Carlo N-Particle transp...
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