Results 21 to 30 of about 1,887,793 (348)

Licensing of cyclotron facilities in Brazil: Status and per-spectives

Brazilian Journal of Radiation Sciences, 2017
Molecular imaging is the focus of an impressive scientific and technological development, especially in oncology. Positron Emission Tomography (PET) is a highly sensitive and accurate nuclear medicine imaging technology that provides a functional or ...
Alessandro Facure, Samira Marques Carvalho, Renato Di Prinzio, Claudia Silveira, Walter Fritz França   +4 more
doaj   +1 more source

Evaluation of radionuclide contamination of soil, coal ash and zeolitic materials from Figueira Thermoelectric Power Plant

Brazilian Journal of Radiation Sciences, 2019
Neutron activation analysis and gamma-ray spectrometry was used to determine 238U, 226Ra, 228Ra, 210Pb, 232Th and 40K contents in feed pulverized coal, bottom ash, fly ash from cyclone and baghouse filters, zeolites synthesized from the ashes and two ...
Denise Alves Fungaro, Denise Alves Fungaro, Paulo Sergio Silva, Felipe Campello, Caio Silva Miranda, Juliana Izidoro   +5 more
doaj   +1 more source

Covariance evaluation of neutron cross sections in CENDL [PDF]

EPJ Web of Conferences, 2023
The covariance evaluation for neutron cross sections in CENDL is briefly introduced in this work. The methodology for evaluation contains the nuclear reaction theoretical model-dependent approach and the non-model dependent one according to the amount of
Xu Ruirui, Ge Zhigang, Tian Yuan, Tao Xi, Jin Yongli, Zhang Yue, Wang Duan, Sun Xiaodong, Zhang Zhi, Wang Jimin, Wang Dongdong, Wei Zihao   +11 more
doaj   +1 more source

AN INTEGRATED RISK INFORMED DECISION MAKING IN THE NUCLEAR INDUSTRY

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2013
The regulatory body, established to ensure safety of nuclear facilities, is expected to make right decisions and provide appropriate regulations for the nuclear industry.
Mieczysław Józef Borysiewicz, Karol Kowal, Piotr Prysiński, Marcin Dąbrowski   +3 more
doaj   +1 more source

Design of a Nanosecond Voltage Comparator with PECL Logic for a Photon-Counting Radiation Imaging System Application

Science and Technology of Nuclear Installations, 2023
In this paper, a nanosecond voltage comparator with PECL logic for a photon-counting radiation imaging system is presented. To realize a high-speed comparison of four gamma detector channels in a limited board space, quad comparators MAX9602 with PECL ...
Huaxia Zhang, Yuewen Sun, Zijia Chen, Zhifang Wu   +3 more
doaj   +1 more source

Constructional requirements and classification of nucleonic gauges

Brazilian Journal of Radiation Sciences, 2019
There are several hundred of nucleonic gauges installed in at least 500 industrial facilities in Brazil. In recent years, several standards have been issued by different international committees in order to specify requirements for the design of ...
Joana D'Arc Ramos Lopes Gomes, Mara Lucia de Lara Costa, Rogério dos Santos Gomes, Evaldo Luiz Correa da Costa, Zieli Dutra Thomé Filho, Gustavo Henrique Flores Caldas   +5 more
doaj   +1 more source

Physicochemical and radiological characterization of flue gas desulfuration waste samples from Brazilian coal-fired power plants

Brazilian Journal of Radiation Sciences, 2023
Flue gas desulfurization (FGD) waste is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. This by-product contain trace quantities of naturally occurring radionuclides and elements such as As, Ba ...
Denise Fungaro, Lucas Grosche, Paulo Silva   +2 more
doaj   +1 more source

Development of fission product chemistry database ECUME for the LWR severe accident

Mechanical Engineering Journal, 2020
We extended the first version of fission product (FP) chemistry database named ECUME (Effective Chemistry database of fission products Under Multiphase rEaction).
Shuhei MIWA, Kunihisa NAKAJIMA, Naoya MIYAHARA, Shunichiro NISHIOKA, Eriko SUZUKI, Naoki HORIGUCHI, Jiazhan LIU, Faoulat MIRADJI, Junpei IMOTO, Afiqa MOHAMAD, Gaku TAKASE, Hidetoshi KARASAWA, Masahiko OSAKA   +12 more
doaj   +1 more source

Radiochemical analysis of the drain water sampled at the exhaust stack shared by Units 1 and 2 of the Fukushima Daiichi Nuclear Power Station

Scientific Reports, 2022
Radioactive gas of Unit 1 of the Fukushima Daiichi Nuclear Power Station was released from the exhaust stack shared by Units 1 and 2 through the venting line on March 12th, 2011.
Asako Shimada, Yoshinori Taniguchi, Kazuo Kakiuchi, Saki Ohira, Yoshihisa Iida, Tomoyuki Sugiyama, Masaki Amaya, Yu Maruyama   +7 more
doaj   +1 more source

Iodine determination in edible algae species using epithermal neutron activation analysis methodology

Brazilian Journal of Radiation Sciences, 2021
Iodine is one of the essential trace elements of much interest in nutritional research being responsible for the production of the thyroid hormones, which has great importance for human metabolism. Edible algae species accumulate iodine from seawater and
Caroline Rodrigues Albuquerque, Vera Akiko Maihara, Paulo Sergio Cardoso Sila   +2 more
doaj   +1 more source