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词汇 carbonaceous
释义 BETA

Examples of carbonaceous


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The organic matter present in carbonaceous chondrite is in large part kerogenic in nature.
The carbonaceous chondrites also contain about 2% solid organic polymer which may be nutrients for heterotrophs.
There is no evidence that hydrothermal processes played any direct role in the deposition of either the carbonaceous matter or the enclosing sediments.
These can be found close to both carbonaceous and non-carbonaceous filamentous structures as well as completely non-associated with either one.
Early carbonaceous asteroids contained liquid solutions that we reconstructed for biological tests.
One metre further above, the first marine gastropods appear within carbonaceous mudstones.
The distribution, morphology, structuring, and isotopic composition of included carbonaceous matter varies with depositional setting.
Carbon and nitrogen isotope data, therefore, reflect the presence of three distinct types of organic matter in carbonaceous chondrites.
Some of the carbonaceous chondrites have been exposed to aqueous alteration, which has resulted in complete recrystallization and thus removed any traces of chondrules.
They are in the same size range as the carbonaceous filaments except in length.
They are attached to the vein walls and embedded in carbonates just like the carbonaceous filaments.
These results show that complex carbonaceous solid-state compounds can be produced in a circumstellar environment over a period of only a few thousand years1,2.
These results show that complex carbonaceous compounds can be produced in a circumstellar environment over a period of only a few thousand years1.
To examine microbial responses, we inoculated these solutions and wet carbonaceous chondrite meteorites with microorganisms.
The experimental characterization of vapors and carbonaceous materials produced is presented and compared to the theoretical predictions.
It can be argued that fluids derived their carbonic species mostly from the devolatilization of the carbonaceous metapelites.
It was a surprise to find that the carbonaceous components of chondritic meteorites are rich in amino acids, as detected in acid-hydrolysed extracts.
Carbonaceous/anomalous chondrites only represent 2% of finds (5% of falls).
Compounds related to the first two classes are also found in carbonaceous chondrites.


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