Navigation Links
Radioactivity: Discover the lowest amounts with new methods
Date:9/16/2008

Detecting ever lower amounts of ionising radiation with ever better methods sci-entists have had this goal since the start of the nuclear age. In addition to natural radiation, mankind is exposed to a multitude of other sources of radiation which result from the military and technical use of radioactive substances. To protect health, but also for technical and medical applications, it is necessary to determine even the smallest amounts of radionuclides with high precision. On the invitation of the Physikalisch-Technische Bundesanstalt (PTB), scientists from 27 countries are meeting from 22nd to 26th September 2008 to exchange ideas about new measurement and analytical techniques and possible ways of applying them: at the "5th International Conference on Radionuclide Metrology Low-Level Radioactivity Measurement Techniques".

PTB scientists contribute to this international exchange with three dissertations:

1. The German thoron progeny chamber Concept and Application

Abstract: For the measurement of the thoron progenies, a reference field has been estab-lished within the scope of a project funded by the Federal Ministry of Environment, Nature Protection Reactor Safety. This field consists of an air-conditioned walk-in testing chamber in which the environmental parameters temperature, air humidity and aerosol content can be adjusted and controlled. Analogue to the radon reference chamber, Carnauba wax aerosol is used as model aerosol. The activity concentrations of thoron and of the thoron progenies shall be adjusted by means of several open exhalation sources with 228Th which are distrib-uted in the chamber. Homogeneity of the environmental parameters and of the activity con-centrations of thoron and its progenies in the chamber is ensured by a special ventilation system. With this system, a compromise has been made between high circulation rates due to the low half-life of thoron, on the one hand, and low flow velocities due t
'/>"/>

Contact: Dr. Dirk Arnold
dirk.arnold@ptb.de
Physikalisch-Technische Bundesanstalt (PTB)
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Mass. Generals Warren Triennial Prize honors discoverers of microRNAs
2. How are herbicides discovered?
3. TGen and Washington University researchers discover new approach to treating endometrial cancer
4. Key discovered to cold tolerance in corn
5. Researchers discover atomic bomb effect results in adult-onset thyroid cancer
6. Unexpected large monkey population discovered
7. Munich researchers discover key allergy gene
8. Johns Hopkins scientists discover what drives the development of a fatal form of malaria
9. Mount Sinai researchers discover technology that silences genes
10. MSUs discovery of plant protein holds promise for biofuel production
11. Smithsonian scientists discover new bird species
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/22/2014)... Analyzing thousands of breeding bird surveys sent in by ... over 35 years, wildlife researchers report that most of ... or toward higher elevation in response to climate change, ... that most previous studies of potential climate change impacts ... the other have likely underestimated the effects of environmental ...
(Date:4/22/2014)... . , Performed ... genome and subsequent phylogenetic analysis show that the virus ... distinct from strains previously identified in the Democratic Republic ... the laboratory confirmed cases with the initial deaths recorded ... a lethal, highly contagious virus for which there is ...
(Date:4/22/2014)... in two Minnesota cities demonstrate how communities can ... a ten year program in New England and ... to local conditions. , "Our goal is to ... said program co-leader Latham Stack, of Syntectic International, ... worsened. We help communities move beyond feeling paralyzed ...
Breaking Biology News(10 mins):Wildlife response to climate change is likely underestimated, experts warn 2Inserm and the Institut Pasteur identify a new variant of Ebola virus in Guinea 2Minnesota projects offer hope and practical help to communities facing more extreme storms 2
... Tests on the influence that a stress-related hormone has ... on understanding how it influences human learning, according to ... Professor in Comparative Human Development, has found that when ... quickly if they have a modest amount of cortisol, ...
... been lifted at the request of the PIO. , Without ... sideways, even though they lack flippers or fins. University of ... pelvic, abdominal and rib muscles to shift their lungs like ... the head when they surface and sideways when they roll. ...
... the Genome Sequencing Center (GSC) at Washington University in St. ... of the corn genome. In the fall of ... Agriculture (USDA) and the Department of Energy (DOE), awarded $32 ... goal of the project led by the Washington University GSC ...
Cached Biology News:Research with squirrels provides clues on hormone's role in human learning 2How alligators rock and roll 2How alligators rock and roll 3How alligators rock and roll 4How alligators rock and roll 5All eyes and ears on the corn genome 2All eyes and ears on the corn genome 3
(Date:1/15/2014)... Niagara Thermal Products is proud to announce that ... ("B3") as the critical thermal component supplier in support ... Corps of Engineers.  B3 has developed the only comprehensive ... destroys VOCs and other chemical pollutants, allergens and organic ...
(Date:1/15/2014)... 15, 2014 Cynvenio, a cancer diagnostics ... the genomic analysis of tumor cells in the bloodstream, ... web-based cancer decision support application powered by CollabRx, Inc. ... ClearID™ genomic test, Therapy Finder will provide breast cancer ...
(Date:1/15/2014)... Jan. 15, 2014 ­ RedBrick Health , a ... technology, today announces that EmblemHealth , the ... company, is now providing the RedBrick Compass health assessment, ... to all of its members. EmblemHealth is among the ...
(Date:1/15/2014)... January 15, 2014 A study has been ... the Formula 1 track could help to tackle the problem ... (MAT), Stowhealth (a GP surgery based in Stowmarket) and academics ... Simplyhealth. Telemetry technology, which is inspired by equipment ...
Breaking Biology Technology:Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4
... EAU CLAIRE -- In the latest of a string of ... has announced a fiber-optic gigabit Ethernet adapter compatible with Mac ... Adapters with Small Tree's OS X drivers means Apple-based ... can now take advantage of optical fiber's greater range than ...
... funding in the U.S. during the first quarter of ... small companies. , ,While promising, this level was lower ... of 2003, according to PricewaterhouseCooper's MoneyTree analysis. ... were a bit of a positive shocker as venture ...
... world today are WWWno further explanation is required , ,There ... the alphabet, W, as in WWI or WWII, ... there's the WWF and WWF. The match between the World ... muscles losing to cuddly pandas, and the wrestlers became the ...
Cached Biology Technology:Midwest life science companies capture 3% of VC investments in Q.2 2The global power of WWW 2The global power of WWW 3
Mouse monoclonal [1.T.4] to WAVE 1 ( Abpromise for all tested applications). Antigen: His6 fusion protein corresponding to full-length rat WAVE1. Entrez Gene ID: 8936...
For the differentiation of mouse embryonic stem cells tooligodendrocytes....
VAP-1 (S-13)...
... atoms at the 3, 3', 4, and ... as an internal standard for the quantification ... LC-mass spectrometry. PGE2 is one of the ... one of the most widely investigated prostaglandins. ...
Biology Products: