A High-Definition Gamma Scanning Method for the Near-Field Nondestructive Assay of Large Nuclear Waste Barrels

1998 ◽  
Vol 124 (3) ◽  
pp. 265-275
Author(s):  
Chin-Jen Chang ◽  
Samim Anghaie
Keyword(s):  
Nuclear Waste ◽  
Near Field ◽  
High Definition ◽  
Scanning Method ◽  
Nondestructive Assay ◽  
Gamma Scanning

Near Field EMC Scanning Method Based on an E-Field Collapse

2015 ◽  
Author(s):  
Jeff Dunnihoo ◽  
Pasi Tamminen ◽  
Toni Viheriäkoski
Keyword(s):  
Near Field ◽  
Electronic Systems ◽  
Inexpensive Method ◽  
Scanning Method ◽  
Field Information ◽  
Novel Method ◽  
Near Field Scanning

Abstract In this study we present a novel method to use a field collapse method together with fully automated near field scanning equipment to construct E- and H-field information of a system during transient ESD events. This inexpensive method provides an alternative way for system designers to validate and analyze the EMC/ESD capability of electronic systems without TLP pulsers, ESD simulators, or precision inductive current probes.

Study on Effect of Density Heterogeneity for Nuclear Waste Drum Samples in Segmented Gamma Scanning Analysis

2017 ◽  
pp. 525-534
Author(s):  
Honglong Zheng ◽  
Xianguo Tuo ◽  
Shuming Peng ◽  
Rui Shi ◽  
Chao Deng
Keyword(s):  
Nuclear Waste ◽  
Gamma Scanning

scholarly journals Research on Anti-Radiation Noise Interference of High Definition Multimedia Interface Circuit Layout of a Laptop

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 426 ◽  
Author(s):  
Wei Chien ◽  
Yu-Ting Cheng ◽  
Chiuan-Fu Hsiao ◽  
Kai-Xu Han ◽  
Chien-Ching Chiu
Keyword(s):  
Electromagnetic Interference ◽  
Printed Circuit Board ◽  
Near Field ◽  
Circuit Board ◽  
High Definition ◽  
Interface Circuit ◽  
Noise Interference ◽  
Multimedia Interface ◽  
Pcb Layout ◽  
Detection Instrument

In this paper, several aspects were studied, including the effect of an electromagnetic interference (EMI) noise interference strategy with High Definition Multimedia Interface (HDMI) 1.4, the analysis of a test on a printed circuit board (PCB) layout, and a comparison of the near field intensity radiation distribution between an EMI with a modified HDMI layout and an original layout. In this study, the near field detection instrument of APREL EM-ISight was employed to analyze the distribution of the strength of an electromagnetic noise field. After the practical validation, we found that the PCB layout complies with the standards after the modifications. Meanwhile, the PCB layout satisfies the requirements of most laptop HDMI-related products for EMI.

scholarly journals HistoNFC: An Innovative Tool for the Practical Teaching of Histology Using NFC Technology

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
I. Jimena Medina ◽  
M. A. Gómez-Luque ◽  
J. Peña Amaro ◽  
I. Luque Ruiz ◽  
M. A. Gómez-Nieto
Keyword(s):  
Mobile Device ◽  
Web Applications ◽  
Student Evaluation ◽  
Near Field ◽  
High Definition ◽  
Glass Slides ◽  
E Learning ◽  
Innovative Tool ◽  
The University

Despite the development of mobile device technology over recent years, its application in the field of teaching has not yet had a parallel development. For the past two decades teaching subjects such as histology has undergone a change in the digital use of its content and didactic methods based on Web applications, e-learning portals, etc., in which the use of high definition images enables the substitution of the light microscope for a “virtual microscope”. This paper describes a mobile device solution based on the use of Near Field Communication technology for supporting teaching in medical histology. The didactic contents are managed in a database which stores information and images corresponding to the histological slides that are handed out to students in the glass slides for their analysis under a microscope. By associating a single NFC chip to each glass slide and touching this chip with a smartphone, students are given access to all the multimedia information related to the histological slides, without needing a mobile device. The system developed, called HistoNFC, enables access to this information at any moment, as well as the follow-up to the didactic activity and student evaluation. Evaluation of the system has been carried out by histology students of medical degree at the University of Córdoba, assessing aspects of the assisted-learning process as well as technologies, and the results obtained have been very favorable for both, as can be seen in detail in this study.

scholarly journals Radiation Effects on Materials in the Near-Field of a Nuclear Waste Repository

2000 ◽  
Vol 663 ◽  
Author(s):  
B.X. Gu ◽  
L.M. Wang ◽  
S.X. Wang ◽  
R.C. Ewing
Keyword(s):  
Ion Exchange ◽  
Nuclear Waste ◽  
Radiation Effects ◽  
Ion Beam ◽  
Near Field ◽  
Energetic Electron ◽  
Layered Silicates ◽  
Nuclear Waste Repository ◽  
Layer Spacing ◽  
Waste Repository

ABSTRACTThe long-term radiation effects on materials in the near-field of a nuclear waste repository have been evaluated using accelerated laboratory experiments with energetic electron or ion beam irradiation. The materials studied include: zeolites, layered silicates (smectite clay and mica), as well as crystalline silicotitanate (CST) which is an important ion exchange material for the chemical separation of high-level liquid radioactive wastes.In situ transmission electron microscopy (TEM) during irradiation by energetic electrons and ions has shown that all of the studied materials are susceptible to irradiation-induced amorphization. At room temperature, complete amorphization was observed after ionizing doses of 1010 ∼ 1012 Gy or displacement doses on the order of 0.1 dpa (equivalent to doses received in 400-1,000 years for a high-loading nuclear waste form). Amorphization may be preceded or accompanied by dehydration, layer spacing reduction and gas bubble formation. In the case of zeolites, CST and some layered silicates, radiation effects are significantly enhanced at higher temperatures. Our experiments have shown that amorphization or even partial amorphization will cause a dramatic reduction in ion exchange and sorption/desorption capacities for radionuclides, such as Cs and Sr. Because the near-field or chemical processing materials (e.g. zeolites or CST) will receive a substantial radiation dose after they have incorporated radionuclides, our results suggest that radiation effects may, in some cases, retard the release of sorbed or ion-exchanged radionuclides.

In situ experiments on the performance of near-field for nuclear waste repository at KURT

2012 ◽  
Vol 252 ◽  
pp. 278-288 ◽  
Author(s):  
Won-Jin Cho ◽  
Jin-Sub Kim ◽  
Changsoo Lee ◽  
Sangki Kwon ◽  
Jong-Won Choi
Keyword(s):  
Nuclear Waste ◽  
Near Field ◽  
Nuclear Waste Repository ◽  
In Situ Experiments ◽  
Waste Repository

Comparison of International Source-Term Codes

1993 ◽  
Vol 333 ◽  
Author(s):  
W. Zhou ◽  
M. J. Apted ◽  
P. Robinson
Keyword(s):  
Nuclear Waste ◽  
Preliminary Analysis ◽  
Source Term ◽  
Near Field ◽  
Different Types ◽  
Solution Methods ◽  
Initial Comparison ◽  
Models Comparison ◽  
The Impact ◽  
Transport Factors

ABSTRACTSource-term codes to predict the release of radionuclides from nuclear waste packages have been developed and implemented worldwide. A survey and initial comparison of the attributes and capabilities of 13 international source-term codes was recently completed. This preliminary analysis focused on comparison of transport factors/processes and solution methods. This initial comparison is a necessary first step in a properly-conceived, systematic benchmarking of source-term codes. Advantages of such a comparison include assurance of the mathematical correctness of implemented models, comparison and quantification of variances introduced by different types of simplifications, and identification and quantification of the impact of near-field processes.

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