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:12/10/2014)... Dec. 08, 2014 Research and Markets ... of the "Biometrics Market in Japan 2014-2018" ... http://photos.prnewswire.com/prnh/20130307/600769 The integration ... as rural banking and upgradation of the driver,s ... in the market. Besides the aforementioned projects, biometrics ...
(Date:12/5/2014)... , Dec. 4, 2014 Increased emphasis ... investments in new testing and inspection technologies. The ... rise to a range of innovative test solutions. ... of Generation Y, which is generally more inclined ... result, product development strategies of test equipment vendors ...
(Date:12/4/2014)... 3, 2014  Crossmatch™, a leading provider of ... DigitalPersona ® Pro Enterprise software and U.are.U ... throughout First Bank branch locations in ... and Virginia. First Bank, a progressive community ... North Carolina , selected the Crossmatch biometrics-based ...
Breaking Biology News(10 mins):Biometrics Market in Japan 2014-2018: Key Vendors are DDS, Fujitsu, Hitachi and NEC 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3
... of serum long-chain omega-3 fatty acids may help reduce the ... Eastern Finland study published recently in Diabetes Care . ... oils. Type 2 diabetes is becoming increasingly widespread throughout ... factor, which means that diet and other lifestyle factors play ...
... launches today, investigating the social and political drivers and ... carbon dioxide emitter by volume, rather than focusing on ... worldwide we need to transform the way we power ... And nowhere is the approach to innovation across these ...
... been awarded to Cynthia Graber for her feature ,Electric ... regeneration?, published at MATTER. In ... journalist based in Massachusetts, investigates the work of Professor ... and Developmental Biology, to improve our understanding of the ...
Cached Biology News:Fish derived serum omega-3 fatty acids help reduce the risk of type 2 diabetes 2Story of human regeneration wins international physics journalism prize 2
(Date:12/22/2014)... December 22, 2014 The ... publication of original research, reviews and editorials addressing ... clinical practice, today published a provocative article exploring ... development, progression and potential treatment of prostate cancer. ... research and proposes the possibility that there could ...
(Date:12/19/2014)... (PRWEB) December 19, 2014 Bioject ... developer and manufacturer of needle-free injection technology, today ... with Immunomic Therapeutics, Inc. (“ITI”) for ITI to ... with its LAMP™ vaccine platform. , In ... exclusive Worldwide license to the Biojector®-2000 that triggers ...
(Date:12/19/2014)... EVANSTON, Ill. , Dec. 19, 2014 ... to develop novel drugs for diseases of the central ... Ph.D., president and chief executive officer, will present at ... Dr. Riedel,s presentation will take place at 3:00 p.m. ... St. Francis in San Francisco, Calif. ...
(Date:12/19/2014)... Mass. , Dec. 19, 2014 Decision ... market will grow at a 12 percent compound annual ... result of the aging population and the increasing adoption ... Latin America will also spur demand for ... of dental implant and periodontal treatments. Other ...
Breaking Biology Technology:Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 2Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 3Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 4Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 2Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 3Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
... the City of Milwaukee has negotiated a three-year "franchise-like" agreement ... to start an Internet protocol video service to compete with ... be considered by the Milwaukee Common Council, AT&T would pay ... the service. , , While there are a ...
... Wis. Providing few details, NimbleGen Systems ... initial public offering. , ,The share price and number of ... taking a lead role, with Thomas Weisel Partners, Leerink-Swann & ... is one of Wisconsin's most-funded companies. A $12.5 million venture ...
... - It has yet to turn a profit, and it ... scope, but the decision by Madison research tool manufacturer NimbleGen ... to $75 million is the latest bit of evidence that the ... continues a pattern of growth and visibility for NimbleGen, which ...
Cached Biology Technology:State video franchises vs. universal service: Grasping the total picture 2State video franchises vs. universal service: Grasping the total picture 3State video franchises vs. universal service: Grasping the total picture 4IPO-bound NimbleGen traveling in fast company 2IPO-bound NimbleGen traveling in fast company 3IPO-bound NimbleGen traveling in fast company 4
Schneider's Drosophila - Insect medium...
... x2 Dual-Binary Analytical System more than doubles ... and LC/MS. The fast analysis cycles of ... up to 100% in tandem mode. Difficult ... mode. Using backflush or heartcut configurations, on-line ...
... We can introduce random mutations to the gene ... then cloned into a vector of choice to ... Mutation frequency can be set to a desired ... of clones 106-108. Mutations can be restricted ...
... DNA preparations are prepared from customers ... 1mg to multi-gram scales. Each preparation ... and glycerol stocks are maintained to ... selection (Clonal selection includes screening colonies ...
Biology Products: