نتایج جستجو برای: miniature source

تعداد نتایج: 428591  

توکلی زانیانی, هاجر, نامی نظری, محمد, کلانتری, سید ظفرالله ,

One of the important neutron sources for Boron Neutron Capture Therapy (BNCT) is a nuclear reactor. It needs a high flux of epithermal neutrons. The optimum conditions of the neutron spectra for BNCT are provided by the International Atomic Energy Agency (IAEA). In this paper, Miniature Neutron Source Reactor (MNSR) as a neutron source for BNCT was investigated. For this purpose, we designed a ...

Journal: :Nuclear Instruments and Methods in Physics Research 2021

Ghana’s highly enriched uranium (90.2%) research reactor has been converted to a low (13.0%) type. Its neutron parameters have characterized for the application of k0-instrumental activation analysis. The magnitude LEU epithermal shaping factor (?) at irradiation site increased by about 25% as compared HEU, while thermal neutrons decreased 5%. This indicates that spectrum is much dependent on 1...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1999
O Prange T H Murphy

Spontaneous miniature synaptic activity is caused by action potential (AP)-independent release of transmitter vesicles and is regulated at the level of single synapses. In cultured cortical neurons we have used this spontaneous vesicle turnover to load the styryl dye FM1-43 into synapses with high rates of miniature synaptic activity. Automated selection procedures restricted analysis to synaps...

2017
Barat Barati Mansour Zabihzadeh Mohammad Javad Tahmasebi Birgani Nahid Chegini Mojtaba Hoseini Ghahfarokhi Jafar Fatahiasl

INTRODUCTION Since the heart of the electronic brachytherapy system is a tube of a miniature x-ray and due to the increasing use of electronic brachytherapy, there is an urgent need for acquiring knowledge about the X-ray spectrum produced, and distribution of x-ray dose. This study aimed to assess the optimal target thickness (TT), the X-ray source spectrum, and the absorbed dose of two miniat...

2016
Jungmin SOHN Sookyung YUN Jeosoon LEE Dongwoo CHANG Mincheol CHOI Junghee YOON

Kidney size may be altered in renal diseases, and the detection of kidney size alteration has diagnostic and prognostic values. We hypothesized that radiographic kidney size, the kidney length to the second lumbar vertebra (L2) length ratio, in normal Miniature Schnauzer dogs may be overestimated due to their shorter vertebral length. This study was conducted to evaluate radiographic and ultras...

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