نتایج جستجو برای: سیستم دزیمتری osl

تعداد نتایج: 75215  

2010
HELENA ALEXANDERSON TIMOTHY JOHNSEN ANDREW S. MURRAY

Pilgrimstad in central Sweden is an important locality for reconstructing environmental changes during the last glacial period (the Weichselian). Its central location has implications for the Scandinavian Ice Sheet as a whole. The site has been assigned an Early Weichselian age (marine isotope stage (MIS) 5 a/c; 474 ka), based on pollen stratigraphic correlations with type sections in continent...

Journal: :International journal of radiation biology 2017
François Trompier Christopher Burbidge Céline Bassinet Marion Baumann Emanuela Bortolin Cinzia De Angelis Jonathan Eakins Sara Della Monaca Paola Fattibene Maria Cristina Quattrini Rick Tanner Albrecht Wieser Clemens Woda

PURPOSE In the EC-funded project RENEB (Realizing the European Network in Biodosimetry), physical methods applied to fortuitous dosimetric materials are used to complement biological dosimetry, to increase dose assessment capacity for large-scale radiation/nuclear accidents. This paper describes the work performed to implement Optically Stimulated Luminescence (OSL) and Electron Paramagnetic Re...

2009
ANTOINE ZINK

It is well known that some minerals give underestimated luminescence ages due to anomalous fading. The anomalous fading follows a logarithmic decay law characterized by its slope, the socalled fading rate or g-value. Using the fading rate, Huntley and Lamothe (2001) suggested some correction for the fading underestimation of young samples (<40-50 ka). For polymineral fine grains, we observe a f...

2011
Qing-Hao Meng Wei-Xing Yang Yang Wang Ming Zeng

This paper addresses the collective odor source localization (OSL) problem in a time-varying airflow environment using mobile robots. A novel OSL methodology which combines odor-source probability estimation and multiple robots' search is proposed. The estimation phase consists of two steps: firstly, the separate probability-distribution map of odor source is estimated via Bayesian rules and fu...

2016
Lilia M Sierra-Galan Maria-Elena Soto-Lopez Victor A Ferrari Yuchi Han

Background Cardiac structural and functional changes due to chronic exposure to moderately high altitudes (HA) have been poorly described. There are many larger cities with altitudes above 2000 meters over sea level (OSL) where this information is relevant. The purpose of our investigation was to identify whether chronic hemodynamic changes and tissue abnormalities were present in those native ...

2004
C A Perks G LeRoy C Yoder C Passmore

This paper describes the development of a new type of personal radiation dosimeter that combines the excellent features of optically stimulated luminescence (OSL) with the convenience of Panasonic type readers. The specification required for the badge in world-wide application is first discussed. The dosemeter is a Panasonic type dosemeter with OSL detectors replacing the thermoluminescence dos...

Journal: :Optics express 2007
Dong Huang Weilong She

We present here a possible high-flux photon-pair source constructed by single lithium niobate optical superlattice (OSL) with a combined quasi-periodically and periodically poled structure, which is from the principle of electrically induced parametric down conversion (PDC) after second-harmonic generation (SHG), predicted by the united theory developed in this paper, in which SHG, PDC and elec...

2002
M W P Savelsbergh

MINTO is a software system that solves mixed integer linear programs by a branch and bound algorithm with linear programming relaxations It also provides automatic constraint classi cation preprocessing primal heuristics and constraint generation Moreover the user can enrich the basic algorithm by providing a variety of specialized application routines that can customize MINTO to achieve maximu...

ژورنال: :سنجش و ایمنی پرتو 0
حمیدرضا همتی hamidreza hemmati shahid beheshti universityتهران، بزرگراه شهید چمران، خیابان یمن،میدان شهید شهریاری، بلوار دانشجو، کد پستی 1983969411 روح الله عظیمی راد rouhollah azimirad malek-ashtar university of technologyتهران، تهران، دانشگاه صنعتی مالک اشتر، پردیس تهران، کدپستی: 1668943171

امروزه، سیستم های تصویربرداری با پرتوهای ایکس برای بازرسی کانتینرها در مبادی ورودی و خروجی کشورها بسیار مورد توجه قرار گرفته اند. سامانه های تصویربرداری دو انرژی به دلیل استفاده از دو پرتو با طیف های انرژی مختلف، امکان به تصویر کشیدن اطلاعات بیشتری از مواد داخل کانتینر ها را دارا هستند. در استفاده از پرتوهای فوتونی به دلیل ایجاد یونیزاسیون، همواره می بایست سه اصل توجیه پذیری، بهینه سازی و حدود ...

In this study, the SrS nanopowder co-activated by Ce3+ and Sm3+ (SrS:Ce,Sm) was synthesized by the co-precipitation method. The transparent pellets were fabricated by mixing the SrS:Ce,Sm nanopowder and bisphenol-A epoxy resin as a crystal of the optically stimulated luminescence (OSL) dosimeter. The crystalline phase verification and also, the morphology of the synthesized nanopowder were inve...

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