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

the Y axis; the X axis shows increasing proportions of oxygen-17 to oxygen-16. When comparing these three isotopes in almost any sample from Earth to an arbitrary standard called SMOW (standard mean ocean water), the proportions of the three always diverge at a rate that can be plotted along a line with a distinctive slope: about one-half.

Samples whose isotope ratios don't fall on the slope-one-half line didn't result from mass-dependent processes. In 1973 the ratios of oxygen isotopes in carbonaceous meteorites, the oldest objects in the solar system, were found to vary significantly from those on Earth. Their graph line had a slope close to one. A decade later Thiemens and John Heidenreich found that ozone, the three-atom molecule of oxygen, showed a similar isotope trend, with a similar slope of one a relationship that was at least partly due to the molecule's chemical formation.

Sulfur isotope ratios are plotted in a similar way; the standard is an iron sulfide mineral called Diablo Canyon Troilite not native to Earth, however, but found in a fragment of the meteorite that created Arizona's Meteor Crater.

"Mass-independent processes suggest chemical reactions, whether in the lab, the stratosphere, or the early solar system," says Ahmed. "In the proto-solar system, bathed in intense ultraviolet light, these might have occurred on a grain of rock or ice or dust, or in just plain gas. The goal is to identify distinctive isotopic fractionations and examine the chemical pathways that could have produced them."

In the beginning

Since Thiemens's early work with ozone 30 years ago, his UC San Diego laboratory has perfected methods of recovering primordial samples from dust, meteorites, and the solar wind. Thiemens and Chakraborty were members of the science team for NASA's Genesis mission, and Chakraborty was able to extract mere billionths of a gram of oxygen from particles of the solar wind even after
'/>"/>

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:7/31/2015)... 31 de julio de 2015 La 10 th ... celebrará por medio de BGI del 22 al 25 de octubre ... Este año, la conferencia celebra su décimo aniversario. ... convertido en una de las reuniones anuales más influyentes del ... las reuniones más dinámicas, entusiastas y mejores a nivel científico. ...
(Date:7/27/2015)... Calif. , July 27, 2015  Synaptics ... of human interface solutions, today announced that Huawei ... touchscreen solution for its stylish smartwatch. Huawei ... its proven reliability, low power and highly responsive ... wet finger. Huawei designers also required a classic ...
(Date:7/21/2015)... 21, 2015  NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market ... that it has filed provisional patent 62/192218 for ... This invention highlights next generation payment ... account, but also the user using unique personal ...
Breaking Biology News(10 mins):La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 2La 10th International Conference on Genomics (ICG-10) se llevará a cabo en octubre 3Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4
... released by the National Institute of Standards and Technology ... vendors to give customers convenient, electronic access to their ... part of the new "Green Button" initiative. Green ... their own energy usage information in an understandable and ...
... a bright 11-year-old who likes to draw detailed maps in his ... physical skills most children take for granted -- running and climbing ... was diagnosed with a form of muscular dystrophy known as Duchenne ... affects about 1 in 3,500 newborns -- mostly boys -- worldwide. ...
... The mystery of how salmon navigate across thousands of ... before journeying upstream to spawn has intrigued biologists for decades, ... the fishes, homing strategy. In the study, scientists examined ... salmon to the Fraser River in British Columbia and ...
Cached Biology News:New guide will allow electric utilities to develop Green Button Web tools 2Experimental gene therapy treatment for Duchenne muscular dystrophy offers hope for youngster 2Experimental gene therapy treatment for Duchenne muscular dystrophy offers hope for youngster 3Experimental gene therapy treatment for Duchenne muscular dystrophy offers hope for youngster 4Salmon may use magnetic field as a navigational aid 2Salmon may use magnetic field as a navigational aid 3
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's ... designed for continuous operation up to 1500 bar. The sanitary design gauge of ... preventing toxic contamination. , The Pony™ NS2006L homogenizer is an ideal solution for ...
(Date:7/29/2015)... 2015: +14% CER / 20% of sales) led the regional performance in the ... as well as solid contributions from Korea, India and ... Middle East / Africa (Q2 2015: +3% ... Turkey and the United Kingdom . ... U.S. HPV sales, on demand across all customer classes. The top seven emerging ...
(Date:7/29/2015)... , July 29, 2015 ... announced the addition of the "Global Biosimilars ... offering. The Global Biosimilars Market, 2015 ... the rapidly growing biosimilars market. With the blockbuster ... to minimize costs, biosimilars are being viewed as ...
(Date:7/29/2015)... , July 29, 2015  Indivior PLC (LON: ... for naloxone nasal spray was accepted and received Priority ... for the treatment of opioid overdose. This naloxone nasal ... specially formulated for optimal absorption into the nasal mucosa. ... minimal training so individuals may be better equipped to ...
Breaking Biology Technology:GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5
... The Netherlands, September 26 A consortium of,experts in ... have,joined forces to develop a novel pandemic influenza vaccine ... awarded a grant of,EUR3.5 million from the European Union ... new vaccine. The so-called FluVac project will be,coordinated by ...
... Glycominds Ltd., a biodiagnostics,company specializing in glycan biomarkers ... cancer, announced today that has,entered the Biomolecular Photonic ... the Government of Israel to improve in-vivo imaging ... BMP consortium was,approved for three years and was ...
... NanoBio(R) Corporation, a,biopharmaceutical company developing novel anti-infective topicals ... today announced,the addition of four new scientists to ... Ph.D.; Susan Ciotti, Ph.D.; Robert L. Hagan, Ph.D.,and ... and commercializing,its novel topical anti-infectives and mucosal vaccines. ...
Cached Biology Technology:European Expert Consortium Combines Forces to Develop a Novel Pandemic Influenza Vaccine 2European Expert Consortium Combines Forces to Develop a Novel Pandemic Influenza Vaccine 3Glycominds Joins Biomolecular Photonic (BMP) Consortium to Develop New Molecular Imaging Technique 2NanoBio Expands Drug Development Team for Its Anti-Infective Products 2NanoBio Expands Drug Development Team for Its Anti-Infective Products 3
... This is a molecular screening, low ... by molecular sieving. It is recommended for ... in size such as PCR products. Micro ... but is not recommended for blotting techniques. ...
Rabbit polyclonal to Nck alpha ( Abpromise for all tested applications). entrezGeneID: 4690 SwissProtID: P16333...
Sheep polyclonal to Salmonella Thomasville ( Abpromise for all tested applications). Antigen: Native Salmonella thomasville...
Goat polyclonal to HA1 ( Abpromise for all tested applications). Antigen: Synthetic peptide: TLGSCRERQPEFV from the C terminus of human HA1. Entrez GeneID: 23526 Swiss Protein ID: O78181...
Biology Products: