R Kurt Ungar : rechercher sur Z-Library

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1

[IEEE 2012 IEEE Symposium on Computational Intelligence for Security and Defense Applications (CISDA) - Ottawa, ON, Canada (2012.07.11-2012.07.13)] 2012 IEEE Symposium on Computational Intelligence for Security and Defence Applications - Anomaly detection in gamma ray spectra: A machine learning perspective

Sharma, Shiven, Bellinger, Colin, Japkowicz, Nathalie, Berg, Rodney, Ungar, Kurt

Année:

2012

Langue:

english

Fichier:

PDF, 862 KB

english, 2012

2

Machine learning for radioxenon event classification for the Comprehensive Nuclear-Test-Ban Treaty

Trevor J. Stocki, Guichong Li, Nathalie Japkowicz, R. Kurt Ungar

Journal:

Journal of Environmental Radioactivity

Année:

2010

Langue:

english

Fichier:

PDF, 483 KB

english, 2010

3

A gamma–gamma coincidence spectrometric method for rapid characterization of uranium isotopic fingerprints

Weihua Zhang, Jing Yi, Pawel Mekarski, Kurt Ungar, Barry Hauck, Gary H. Kramer

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 380 KB

english, 2011

4

Particle Density Using Deposition Filters at the Full Scale RDD Experiments

Berg, Rodney, Gilhuly, Colleen, Korpach, Ed, Ungar, Kurt

Journal:

Année:

2016

Langue:

english

Fichier:

PDF, 593 KB

english, 2016

5

Cosmic-muon intensity measurement and overburden estimation in a building at surface level and in an underground facility using two BC408 scintillation detectors coincidence counting system

Zhang, Weihua, Ungar, Kurt, Liu, Chuanlei, Mailhot, Maverick

Journal:

Journal of Environmental Radioactivity

Année:

2016

Langue:

english

Fichier:

PDF, 1.99 MB

english, 2016

6

Beta–gamma coincidence counting efficiency and energy resolution optimization by Geant4 Monte Carlo simulations for a phoswich well detector

Weihua Zhang, Pawel Mekarski, Kurt Ungar

Journal:

Applied Radiation and Isotopes

Année:

2010

Langue:

english

Fichier:

PDF, 679 KB

english, 2010

7

Radiostrontium and radium analysis in low-level environmental samples following a multi-stage semi-automated chromatographic sequential separation

Nadereh St-Amant, Jeffrey C. Whyte, Marie-Eve Rousseau, Dominic Lariviere, R. Kurt Ungar, Sonia Johnson

Journal:

Applied Radiation and Isotopes

Année:

2011

Langue:

english

Fichier:

PDF, 770 KB

english, 2011

8

Quantification of 235U and 238U activity concentrations for undeclared nuclear materials by a digital gamma–gamma coincidence spectroscopy

Weihua Zhang, Jing Yi, Pawel Mekarski, Kurt Ungar, Barry Hauck, Gary H. Kramer

Journal:

Applied Radiation and Isotopes

Année:

2011

Langue:

english

Fichier:

PDF, 636 KB

english, 2011

9

Low level noble gas measurements in the field and laboratory in support of the Comprehensive Nuclear-Test-Ban Treaty

Trevor J Stocki, Marc Bean, R Kurt Ungar, Harri Toivonen, Weihua Zhang, Jeff Whyte, Dorothy Meyerhof

Journal:

Applied Radiation and Isotopes

Année:

2004

Langue:

english

Fichier:

PDF, 224 KB

english, 2004

10

Krypton isotopic signature study of the primary coolant of CANDU nuclear power plant

Weihua Zhang, Kurt Ungar, Ian Hoffman, Ryan Lawrie

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 270 KB

english, 2009

11

Changes in radioxenon observations in Canada and Europe during medical isotope production facility shut down in 2008

Ian Hoffman, Kurt Ungar, Marc Bean, Jing Yi, René Servranckx, Calin Zaganescu, Nils Ek, Xavier Blanchard, Gilbert Le Petit, Guy Brachet, Pascal Achim, Thomas Taffary

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2009

Langue:

english

Fichier:

PDF, 434 KB

english, 2009

12

Automated analysis for large amount gaseous fission product gamma-scanning spectra from nuclear power plant and its data mining

Weihua Zhang, Jarmo Ala-Heikkila, Kurt Ungar, Ian Hoffman, Ryan Lawrie

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 225 KB

english, 2010

13

Geant4 Monte Carlo radioxenon beta-gamma coincidence efficiency simulation for a phoswich detector

Weihua Zhang, Pawel Mekarski, Jonathan Lam, Kurt Ungar, Eric Pellerin

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 560 KB

english, 2010

14

A Geant4 Monte Carlo method for synthesizing radioxenon beta-gamma coincidence spectra

Weihua Zhang, Pawel Mekarski, Jonathan Lam, Kurt Ungar

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 367 KB

english, 2010

15

A system for low-level the cosmogenic22Na radionuclide measurement by gamma–gamma coincidence method using BGO detectors

Weihua Zhang, Jing Yi, Pawel Mekarski, Ian Hoffman, Kurt Ungar, Ari-Pekka Leppänen

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 281 KB

english, 2011

16

A digital Compton suppression spectroscopy without gamma-ray coincidence-summing loss using list-mode multispectral data acquisition

Zhang, Weihua, Mekarski, Pawel, Dion, Maxime, Yi, Jing, Ungar, Kurt

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2012

Langue:

english

Fichier:

PDF, 671 KB

english, 2012

17

Development of a new aerosol monitoring system and its application in Fukushima nuclear accident related aerosol radioactivity measurement at the CTBT radionuclide station in Sidney of Canada

Weihua Zhang, Marc Bean, Mike Benotto, Jeff Cheung, Kurt Ungar, Brian Ahier

Journal:

Journal of Environmental Radioactivity

Année:

2011

Langue:

english

Fichier:

PDF, 765 KB

english, 2011

18

Nuclear event zero-time calculation and uncertainty evaluation

Pujing Pan, R. Kurt Ungar

Journal:

Journal of Environmental Radioactivity

Année:

2012

Langue:

english

Fichier:

PDF, 274 KB

english, 2012

19

Short-term production and synoptic influences on atmospheric 7 Be concentrations

Usoskin, Ilya G., Field, Christy V., Schmidt, Gavin A., Leppänen, Ari-Pekka, Aldahan, Ala, Kovaltsov, Gennady A., Possnert, Göran, Ungar, R. Kurt

Journal:

Journal of Geophysical Research

Année:

2009

Langue:

english

Fichier:

PDF, 599 KB

english, 2009

20

HETEROGENIZED HOMOGENEOUS CATALYSTS

Richard T. Smith, R. Kurt Ungar, Laura J. Sanderson, Michael C. Baird

Journal:

Annals of the New York Academy of Sciences

Année:

1983

Langue:

english

Fichier:

PDF, 297 KB

english, 1983

21

High selectivity catalysts for the oxidative coupling of methane: Complex oxides with the rock salt structure

R. Kurt Ungar, Xiankuan Zhang, Richard M. Lambert

Journal:

Applied Catalysis

Année:

1988

Langue:

english

Fichier:

PDF, 255 KB

english, 1988

22

Testing of an automatic outdoor gamma ambient dose-rate surveillance system in Tokyo and its calibration using measured deposition after the Fukushima nuclear accident

Zhang, Weihua, Korpach, Ed, Berg, Rodney, Ungar, Kurt

Journal:

Journal of Environmental Radioactivity

Année:

2013

Langue:

english

Fichier:

PDF, 344 KB

english, 2013

23

The ambient gamma dose-rate and the inventory of fission products estimations with the soil samples collected at Canadian embassy in Tokyo during Fukushima nuclear accident

Weihua Zhang, Judah Friese, Kurt Ungar

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2013

Langue:

english

Fichier:

PDF, 340 KB

english, 2013

24

Modelling of a Single-Channel Beta–Gamma Coincidence Phoswich Detector Using Geant4 for the Conversion Electron Energy Peak Resolution and Beta–Gamma Coincidence Efficiency Improvement

Weihua Zhang, Pawel Mekarski, Marc Bean, Jing Yi, Kurt Ungar

Journal:

Pure and Applied Geophysics

Année:

2014

Langue:

english

Fichier:

PDF, 363 KB

english, 2014

25

A gamma–gamma coincidence/anticoincidence spectrometer for low-level cosmogenic 22Na/7Be activity ratio measurement

Zhang, Weihua, Ungar, Kurt, Stukel, Matthew, Mekarski, Pawel

Journal:

Journal of Environmental Radioactivity

Année:

2014

Langue:

english

Fichier:

PDF, 1.45 MB

english, 2014

26

Performance evaluation and optimization for a newly developed digital list-mode data acquisition Compton suppression spectrometer

Zhang, Weihua, Keeshan, Benjamin, Mekarski, Pawel, Yi, Jing, Ungar, Kurt

Journal:

Applied Radiation and Isotopes

Année:

2013

Langue:

english

Fichier:

PDF, 1.14 MB

english, 2013

27

Co(CO)3NO encapsulated in zeolite NaY; a novel shape-selective Fischer?Tropsch catalyst

Ungar, R. Kurt, Baird, Michael C.

Journal:

Journal of the Chemical Society Chemical Communications

Année:

1986

Langue:

english

Fichier:

PDF, 337 KB

english, 1986

28

An oxygen species for the oxidative coupling of methane at lower temperatures

Zhang, Xiankuan, Ungar, R. Kurt, Lambert, Richard M.

Journal:

Journal of the Chemical Society Chemical Communications

Année:

1989

Langue:

english

Fichier:

PDF, 245 KB

english, 1989

29

Rhodium complexes of the water-soluble phosphine Ph2PCH2CH2NMe3+. Their complexes with hydride, olefin, and carbon monoxide ligands. Their use as olefin hydrogenation and hydroformylation catalysts in aqueous solution and in aqueous/organic solvent two-phase systems, and adsorbed on a cation-exchange resin

Smith, Richard T., Ungar, R. Kurt, Sanderson, Laura J., Baird, Michael C.

Journal:

Organometallics

Année:

1983

Langue:

english

Fichier:

PDF, 987 KB

english, 1983

30

[IEEE 2008 Eighth IEEE International Conference on Data Mining (ICDM) - Pisa, Italy (2008.12.15-2008.12.19)] 2008 Eighth IEEE International Conference on Data Mining - Border Sampling through Coupling Markov Chain Monte Carlo

Li, Guichong, Japkowicz, Nathalie, Stocki, Trevor J., Ungar, R. Kurt

Année:

2008

Langue:

english

Fichier:

PDF, 389 KB

english, 2008

31

Bayesian Inference for Source Reconstruction: A Real-World Application

Yee, Eugene, Hoffman, Ian, Ungar, Kurt

Journal:

International Scholarly Research Notices

Année:

2014

Langue:

english

Fichier:

PDF, 3.30 MB

english, 2014

32

An Optimized Design of Single-Channel Beta-Gamma Coincidence Phoswich Detector by Geant4 Monte Carlo Simulations

Zhang, Weihua, Mekarski, Pawel, Bean, Marc, Yi, Jing, Ungar, Kurt

Journal:

Science and Technology of Nuclear Installations

Année:

2011

Langue:

english

Fichier:

PDF, 783 KB

english, 2011

33

Estimation of the Arctic aerosols from local and long-range transport using relationships between 210Pb and 212Pb atmospheric activity concentrations

Zhang, Weihua, Chen, Jing, Ungar, Kurt, Cooke, Michael

Journal:

Journal of Environmental Radioactivity

Année:

2015

Langue:

english

Fichier:

PDF, 1.29 MB

english, 2015

34

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, USA (Saturday 21 January 2012)] Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX - Optical properties of mesogen-coated gold nanoparticles

Dintinger, José, Tang, Bai-Jia, Zeng, Xianbing, Kienzler, Tobias, Mehl, Georg H., Ungar, Goran, Rockstuhl, Carsten, Scharf, Toralf, Eyink, Kurt G., Szmulowicz, Frank, Huffaker, Diana L.

Année:

2012

Langue:

english

Fichier:

PDF, 1.11 MB

english, 2012

35

Design and Optimization of a Dual-HPGe Gamma Spectrometer and Its Cosmic Veto System

Zhang, Weihua, Ro, Hyunje, Liu, Chuanlei, Hoffman, Ian, Ungar, Kurt

Journal:

IEEE Transactions on Nuclear Science

Année:

2017

Langue:

english

Fichier:

PDF, 644 KB

english, 2017

36

Detection efficiency calculations using Geant4 for a broad-energy germanium gamma spectrometer

Chuanlei Liu,Kurt Ungar,Dylan Pierce…

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2017

Langue:

english

Fichier:

PDF, 1.31 MB

english, 2017

37

Accurate efficiency characterization of a BEGe detector in the low-energy range using empirical and Monte Carlo simulation approaches

Mekarski, Pawel, Zhang, Weihua, Liu, Chuanlei, Ungar, Kurt

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

2017

Langue:

english

Fichier:

PDF, 1.63 MB

english, 2017

38

Evaluation of mean transit time of aerosols from the area of origin to the Arctic with 210 Pb/ 210 Po daily monitoring data

Zhang, Weihua, Sadi, Baki, Rinaldo, Christopher, Chen, Jing, Spencer, Norman, Ungar, Kurt

Journal:

Journal of Environmental Radioactivity

Année:

2017

Langue:

english

Fichier:

PDF, 926 KB

english, 2017

39

Gamma Spectrum and Coincidence Summation Simulations with Geant4 in the Analysis of Radionuclide Using BEGe Detector

Liu, Chuanlei, Zhang, Weihua, Pierce, Dylan, Ungar, Kurt, Tulk, Christopher, Bean, Marc

Journal:

Applied Radiation and Isotopes

Année:

2018

Langue:

english

Fichier:

PDF, 2.20 MB

english, 2018

40

ATMOSPHERIC PARTICULATE AND XENON RADIOISOTOPES MONITORING OVER CANADA AND HEALTH IMPACT ESTIMATION BEFORE AND AFTER THE FUKUSHIMA NUCLEAR ACCIDENT

Zhang, Weihua, Ungar, Kurt

Journal:

Radiation Protection Dosimetry

Année:

2018

Langue:

english

Fichier:

PDF, 240 KB

english, 2018

41

Development of a national cosmic-ray dose monitoring system with Health Canada's Fixed Point Surveillance network

Liu, Chuanlei, Zhang, Weihua, Ungar, Kurt, Korpach, Ed, White, Brian, Benotto, Mike, Pellerin, Eric

Journal:

Journal of Environmental Radioactivity

Année:

2018

Langue:

english

Fichier:

PDF, 1.58 MB

english, 2018

42

The development of a digital gamma-gamma coincidence/anticoincidence spectrometer and its applications to monitor low-level atmospheric 22 Na/ 7 Be activity ratios in Resolute Bay, Canada

Zhang, Weihua, Lam, Kenneth, Ungar, Kurt

Journal:

Journal of Environmental Radioactivity

Année:

2018

Langue:

english

Fichier:

PDF, 2.04 MB

english, 2018

43

Observation of Ground-level Enhancement Across Canada’s Fixed Point Surveillance Network During the 20 January 2005 Solar Event

Liu, Chuanlei, Ungar, Kurt, Zhang, Weihua, Korpach, Ed, Benotto, Mike, Pellerin, Eric

Journal:

Année:

2019

Fichier:

PDF, 659 KB

2019

44

Fluorescence-based method for estimating the dead layer thickness of a broad-energy germanium detector

Liu, Chuanlei, Yi, Jing, Ungar, Kurt, Zhang, Weihua

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Année:

2020

Fichier:

PDF, 744 KB

2020

45

Identification of a chemical fingerprint linking the undeclared 2017 release of 106 Ru to advanced nuclear fuel reprocessing

Cooke, Michael W., Botti, Adrian, Zok, Dorian, Steinhauser, Georg, Ungar, Kurt R.

Journal:

Proceedings of the National Academy of Sciences

Année:

2020

Fichier:

PDF, 921 KB

2020