Personnel monitoring of more than 40,000 radiation workers in India is being carried out routinely using a Bhabha Atomic Research Centre (BARC) made thermoluminescent dosimeter (TLD) badge based on CaSO4:Dy phosphor embedded in Teflon discs [1], and a photographic film badge. Till recently the TLD badges were read using the manual type TLD badge reader system with an external interface unit for...

background: to evaluate the risk involved, there is need to know the quantum of personnel exposures in whole service. dose reports from an oncology centre over 7 block periods, 5 years each from 1979 till 2013 are analyzed. materials and methods: personnel monitoring (pm) reports till 1990s with film badges and later thermoluminescent (tl) badges (caso4.dy) were evaluated. 35 years total servic...

As of October 1996 there are more than 90 radiation-contaminated steel supported rebar buildings (containing more than 1000 apartments) dispersed in the northern part of Taiwan. These apartments were contaminated with cobalt-60 at a total activity ranging from 1-140/tSv/yr. In this paper, a method is developed for evaluating external dose equivalent and dose equivalent rates encountered by the ...

The workshop preserved the general OBIE focus on opportunities and challenges associated with Open Badges, and the overall objective of connecting educators, researchers, and entrepreneurs in discourses on teaching, learning, assessment, digital credentials, and digital education in general. Still, considering the context where it took place, namely the major international conference on learnin...

Thymineless death (TLD) is the rapid loss of viability in bacterial, yeast, and human cells starved of thymine. TLD is the mode of action of common anticancer drugs and some antibiotics. TLD in Escherichia coli is accompanied by blocked replication and chromosomal DNA loss and recent work identified activities of recombination protein RecA and the SOS DNA-damage response as causes of TLD. Here,...

Thermal quenching is described as a decrease in luminescence efficiency with increasing measurement temperature. Luminescence intensity decreases heating rates the presence of thermal quenching. In such case, rate to be used measurements becomes important. Lithium fluoride (LiF) type dosimeters have been widely radiation dosimetry for many years. this study, effect was investigated LiF:Mg,Ti (T...

The commonly used thermoluminescent dosimeter TLD-100 (Harshaw Chemical Company, Solon, OH) responds not only to photons and electrons, but also to neutrons that are produced during high-energy therapies. As a result, TLD-100 measurements outside of the treatment field are suspect when high-energy radiation is used. Although alternatives such as TLD-700 do not respond to neutrons, specialty dos...

Eclipse, an open source software project, acknowledges its donors by presenting donation badges in its issue tracking system Bugzilla. However, the rewarding effect of this strategy is currently unknown. We applied a framework of causal inference to investigate relative promptness of developer response to bug reports with donation badges compared with bug reports without the badges, and estimat...

There has recently been a flurry of interest in supporting the idea of using ‘badges’ to recognise learning, particularly due to the Mozilla Open Badges project (http://openbadges.org/) and the funding channelled through the 2012 Digital Medial and Learning Competition (http://www.dmlcompetition.net/). Badges offer the potential of rewarding informal learning and reaching non-traditional learne...

There has recently been a flurry of interest in supporting the idea of using ‘badges’ to recognise learning, particularly due to the Mozilla Open Badges project (http://openbadges.org/) and the funding channelled through the 2012 Digital Medial and Learning Competition (http://www.dmlcompetition.net/). Badges offer the potential of rewarding informal learning and reaching non-traditional learne...