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:10/29/2014)... At a ceremony held in New York City on ... King, the American Cancer Society Professor of Genome Sciences ... and 2008 Honorary Doctor of Philosophy of Tel Aviv ... in Medical Science. , In addition to her honorary ... Lecturer at the TAU School of Medicine, and for ...
(Date:10/29/2014)... One kind of stem cell, those referred to as ... There is apparently nothing that differentiates these cells from ... namely they retain the capacity to become stem cells ... liver, an organ that hosts cells that stimulate tissue ... the case of a transplant. Knowledge of the ...
(Date:10/29/2014)... in the living world compete with members of ... how much they invest into their competitive ability. ... get access to high-quality resources, while others seem ... the lower-quality resources that are left over for ... and human societies seems to fluctuate considerably over ...
Breaking Biology News(10 mins):Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Evolution of competitiveness 2Evolution of competitiveness 3
... HOUSTON (Dec. 5, 2013) A new method ... proteins may speed the process of novel drug design, ... combination of computational techniques and experimental data helped Rice ... have been hard to detect. The work ...
... CHAMPAIGN, Ill. A 115-million-year-old fossilized wasp from northeast Brazil ... organ through which it lays its eggs, looks a lot ... figs. The problem, researchers say, is that figs arose about ... report of the findings appears in the journal ...
... levers: miniaturized robots of the future will be "soft". , ... to mind are the tentacles of an octopus or the ... a crane or the inner workings of a watch. And ... organisms moving in water. The robots of the future will ...
Cached Biology News:Proteins' passing phases revealed 2Proteins' passing phases revealed 3Ancient 'fig wasp' lived tens of millions of years before figs 2'Soft' (and miniaturized) robots 2
(Date:10/31/2014)... 31, 2014 Huge event with ... future pharma industry health, analysis and forecasting   ... the closing of its most successful show to date ... 2,500 exhibitors. Held this year in Paris ... key players from 140+ countries representing every step of ...
(Date:10/31/2014)... Jeffrey T. Manuel, assistant professor in Southern ... College of Arts and Sciences, is teaming up with ... alcohol-based fuels in Illinois. , “Farmers, researchers, ... to build Illinois’ biofuels industry for decades,” Manuel said. ... state's agricultural and business history. , “Fuel alcohol ...
(Date:10/31/2014)... ENVIRON , an international ... that Dr. Harvey Clewell III has rejoined the ... closely with senior professionals in ENVIRON’s Health Sciences ... at The Hamner Institutes for Health Sciences (The ... he is Director, Center for Human Health Assessment. ...
(Date:10/30/2014)... -- Investor-Edge has initiated coverage on the ... Inc. (NASDAQ: MDVN ), Pharmacyclics Inc. (NASDAQ: ... SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). Free research ... http://investor-edge.com/register . On Wednesday, October 29, 2014, ... Dow Jones Industrial Average declined 0.18%, to finish the ...
Breaking Biology Technology:CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 2CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 3CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 4CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 5CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 6SIUE History Prof Manuel Working on Biofuels Book with NCERC 2SIUE History Prof Manuel Working on Biofuels Book with NCERC 3Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 2Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5
... March 16, Shire plc (LSE: SHP, NASDAQ: ... the U.S. District Court of the Southern District of,New ... three,of Shire,s patents: U.S. Patent No. 5,968,976 (",976 Patent"); ... (",465"). , The lawsuit was ...
... AutoImmune Inc. (OTC Bulletin Board: AIMM) today reported a net ... for the three months ended December 31, 2008, compared with ... basic and diluted, for the three months ended December 31, ... loss was $345,000, or $0.02 per share basic and diluted, ...
... 16 Contamination by mycoplasmal organisms is an ... them ready sources of contamination, while rendering them ... white paper, examines how PCR mycoplasma tests ... minimizes testing delays and enable safe, high-volume biopharmaceutical ...
Cached Biology Technology:Shire Files Lawsuit Against Barr Laboratories for Infringement of FOSRENOL(R) (Lanthanum Carbonate) Patents 2AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 2AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 3AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 4New White Paper Examines Advanced Mycoplasma Tests - How Real-Time PCR Analysis Helps Save Time and Money for Biopharmaceutical Manufacturers 2New White Paper Examines Advanced Mycoplasma Tests - How Real-Time PCR Analysis Helps Save Time and Money for Biopharmaceutical Manufacturers 3
... the ideal CO2 incubator for cell and ... embryos at or near body temperature. HERAcell ... needed to protect and grow your valuable ... incubation conditions ensure optimum culture growth. ...
SP6 RNA Polymerase, 50 l, 20 U/l ,Cap Scribe Buffer, 100 l, 5x conc....
...
... High Vacuum pumps deliver critical performance ... gas ballast control optimizes pump performance to ... glass allows for convenient checking of proper ... series of pumps is designed to work ...
Biology Products: