Navigation Links
Searching for the solar system's chemical recipe
Date:2/20/2013

the spacecraft's collectors were badly damaged when they crashed upon return to Earth.

Like oxygen, sulfur isotopes show up in different fractions in different solar system sources. Tracing their possible origins, the recent study of sulfur isotopes at beamline 9.0.2 began by flowing hydrogen sulfide gas the most abundant sulfur-bearing gas in the early solar system into a pressurized reaction chamber, where the synchrotron beam decomposed the gas and deposited elemental sulfur on "jackets" made of ultraclean aluminum foil.

The experiment was performed at four different VUV wavelengths, and the carefully stored aluminum jackets were taken to the Thiemens lab in San Diego, where Chakraborty and Jackson chemically extracted the sulfur and then measured its isotopes using Isotope Ratio Mass Spectrometry. In all samples the isotope compositions were found to be mass independent.

One source of fractionation in nature was photodissociation of hydrogen sulfide as the gas condensed to iron sulfide in the inner solar system, driven by intense 121.6-nanometer-wavelength ultraviolet light as the young star repeatedly shook with violent flares and upheavals. Different classes of meteorites and different parts of the same meteorites, such as their crust or various inclusions subsequently evolved different isotope ratios, depending on where and when in the solar system they formed. Sulfur compositions evolved independently from the way oxygen isotope compositions evolved.

The most recent target of research by the Thiemens group at beamline 9.0.2 is nitrogen, the seventh most abundant element in the solar system. On Earth, 99.63 of nitrogen is nitrogen-14, and nitrogen-15 is the remaining 0.37 percent. Measurements of the solar wind, carbonaceous meteorites, and other sources show wide swings in their proportions. The work is ongoing.

Says Musa Ahmed, "Tracking down how isotopic ratios may have evolved, we basically send thes
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. EU project: Searching for exotics in the shrimp nets
2. Searching for the origin of muscles
3. Searching genomic data faster
4. UTSA anthropologist honored for contributions researching primates in Africa
5. A new dimension for solar energy
6. Folding light: Wrinkles and twists boost power from solar panels
7. Climatic effects of a solar minimum
8. Bay Area PV Consortium announces $7.5 million in grants to lower the cost of large-scale solar
9. Weizmann Institute solar technology to convert greenhouse gas into fuel
10. Anti-aging elixir for solar cells
11. ASU awarded $3 million to research solar energy technologies, launch energy Ph.D. program
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Searching for the solar system's chemical recipe
(Date:3/24/2015)... PALM BEACH GARDENS, Fla. , March 24, ... of biometric identity management solutions, today announced that ... enabling premium clothing accessory retailer Goorin Bros ... login. The Crossmatch biometrics-based solution secures access to ... customers from the increased risk of data breaches. ...
(Date:3/23/2015)... , March 23, 2015   HOYOS Labs ... management company, today announced that the Company will demonstrate ... both enterprise and consumers at Connect:ID on March 23 ... HOYOS Labs will highlight the IEEE Biometric Open ... ; and enterprise access control system. BOPS was ...
(Date:3/23/2015)... OXFORD, Conn. , Mar. 23, 2015 NXT-ID, Inc. ... authentication company focused on the growing mobile commerce market, announces ... a new advertising campaign on CNBC television starting March 30 ... ads will commence airing in New York ... Executive Officer said: "We are excited about our new ad ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3
... much as one-third of global energy consumption. However, unconventional ... CO2 emissions. ETH Zurich Professor for Sociology, Dirk Helbing, ... that could improve vehicular traffic flow by up to ... the ETH Zurich Chair of Sociology, a specialist in ...
... in girls has been found to negatively affect these ... abuse, adolescent pregnancy, and cancers of the reproductive system. ... certain adolescents are at increased risk for early puberty ... strategies for high-risk youths., New research shows that greater ...
... U.S. Department of Homeland,Security (DHS) announced today that in ... a success and accomplished its intended,goals. In its first ... prosecuted 90 of those migrants, and helped reduce the ... waters between Puerto Rico,and the Dominican Republic. "The ...
Cached Biology News:Traffic control systems 2Traffic control systems 3Traffic control systems 4Family conditions may affect when girls experience puberty 2Biometrics Help Identify, Apprehend and Deter Illegal Migrants 2
(Date:4/30/2015)... , April 30, 2015  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, today announced that it ... Thursday, May 7, 2015 after the close of the ... call and webcast on Thursday, May 7, 2015 at ... the results and recent corporate developments. For ...
(Date:4/30/2015)... 2015 WuXi PharmaTech (Cayman) Inc. ("WuXi" or ... contract R&D services provider, today announced that its board ... dated April 29, 2015, from a consortium (the "Consortium") ... founder, chairman and chief executive officer of the Company, ... a transaction (the "Transaction") involving the acquisition of all ...
(Date:4/30/2015)... SAINT-MALO, FRANCE (PRWEB) April 30, 2015 ... States and at http://www.lespausa.com , Phytomer’s ... to sensitive and reactive skin while battling the ... inflammation. This restorative cream is formulated with star ... derived via biotechnology in a complex of soothing ...
(Date:4/30/2015)... Clinovo Staffing Solutions will ... held in Orlando, FL on May 17-20th, 2015. ... Leslie Kolman, Manager of Staffing Solutions, will present Clinovo’s ... Booth #17. , “We are excited to be ... Says Trisha Heredia, Senior Director of Staffing Solutions at ...
Breaking Biology Technology:Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 2Asterias Biotherapeutics to Report First Quarter Results on May 7, 2015 3WuXi PharmaTech Announces Receipt of Proposal 2WuXi PharmaTech Announces Receipt of Proposal 3WuXi PharmaTech Announces Receipt of Proposal 4WuXi PharmaTech Announces Receipt of Proposal 5WuXi PharmaTech Announces Receipt of Proposal 6Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 2Phytomer introduces DOUCEUR INTEMPORELLE Restorative Shield Cream 3Clinovo Exhibits at the 2015 PharmaSUG Annual Conference on May 17-20th in Orlando, FL 2Clinovo Exhibits at the 2015 PharmaSUG Annual Conference on May 17-20th in Orlando, FL 3
... Wis . - Did the state of Wisconsin improperly apply ... by Menasha Corp. ? , ,The Wisconsin Supreme ... to hear the case, and there is an estimated $350 ... Menasha Corp. , ,At issue is the definition of modified ...
... . - For reasons that may be as innocent as ... that would trade Wisconsin's city-by-city regulation of the cable television ... jobs, help many consumers and speed new technologies to the ... earlier this spring. Since then, however, it has been gathering ...
... Accounting Oversight Board (PCAOB) will place a greater ... numerous studies, including our own, that show IT change ... the investment to fix your change management process because ... compliance program. , ,PCAOB Release number 2006-007, a ...
Cached Biology Technology:In a fast-paced economy, lawmakers must pick up speed 2In a fast-paced economy, lawmakers must pick up speed 3Why IT change management is more important than ever 2Why IT change management is more important than ever 3Why IT change management is more important than ever 4
Human Cystatin A MAb (Clone 224705)...
...
Microlite 2+ Plate, round bottom; an irradiated, high binding surface with enhanced dynamic range, extra high reflectivity and minimal cross talk for low signal luminescent reactions....
... HERAfreeze ultra low temperature freezers ... for safe storage of biological samples ... plus five separate inner doors ensure ... energy costs. ,Application oriented accessories ...
Biology Products: