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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Search for Organic Compounds in the Lunar Dust from the Sea of Tranquillity
|
|---|---|
| Published in |
Science, January 1970
|
| DOI | 10.1126/science.167.3918.760 |
| Pubmed ID | |
| Authors |
Cyril Ponnamperuma, Keith Kvenvolden, Sherwood Chang, Richard Johnson, Glenn Pollock, Delbert Philpott, Isaac Kaplan, John Smith, J. William Schopf, Charles Gehrke, Gordon Hodgson, Irving A. Breger, Berthold Halpern, Alan Duffield, Konrad Krauskopf, Elso Barghoorn, Heinrich Holland, Klaus Keil |
| Abstract |
A sample of lunar dust was examined for organic compounds. Carbon detected in concentrations of 157 micrograms per gram had a delta(13)C per mil (PDB) value of + 20. Treatment with hydrochloric acid yielded hydrocarbons of low molecular weight, suggesting the presence of carbides. The gas chromatogram of the acylated and esterified derivatives of the hydrolyzate was similar to that obtained for the Pueblito de Allende meteorite. There were no detectable amounts of extractable high-molecular-weight alkanes, aromatic hydrocarbons, isoprenoid hydrocarbons, normal alkanes, fatty acids, amino acids, sugars, or nucleic acid bases. Traces of porphyrins were found, perhaps arising from rocket exhaust materials. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 13 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 13 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 6 | 46% |
| Student > Doctoral Student | 2 | 15% |
| Professor | 1 | 8% |
| Student > Master | 1 | 8% |
| Student > Ph. D. Student | 1 | 8% |
| Other | 0 | 0% |
| Unknown | 2 | 15% |
| Readers by discipline | Count | As % |
|---|---|---|
| Earth and Planetary Sciences | 7 | 54% |
| Physics and Astronomy | 2 | 15% |
| Materials Science | 1 | 8% |
| Unknown | 3 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 13 May 2019.
All research outputs
#8,010,807
of 25,508,813 outputs
Outputs from Science
#50,870
of 83,071 outputs
Outputs of similar age
#1,014
of 5,656 outputs
Outputs of similar age from Science
#31
of 86 outputs
Altmetric has tracked 25,508,813 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 83,071 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 65.8. This one is in the 38th percentile – i.e., 38% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 5,656 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 81% of its contemporaries.
We're also able to compare this research output to 86 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 63% of its contemporaries.