衣服
发表于 2025-3-28 15:49:02
Amino Acids in Carbonaceous Chondrites What has been generally lacking is concrete natural evidence for this chemical evolution hypothesis. The recent development of sophisticated analytical techniques and availability of carbonaceous chondrites with a minimum of terrestrial contamination has resulted in the identification of amino acid
臭名昭著
发表于 2025-3-28 21:29:09
Remarks on the Chemical Conditions on the Surface of the Primitive Earth and the Probability of the nd carbon in a form similar to that found in carbonaceous chondrites. The first forms of life must have originated during the time when the water reacted with the carbon (and also with nitrides, phosphides, etc.), while the hydrogen formed by this reaction was continuously lost from the gravitationa
收集
发表于 2025-3-29 02:20:29
Molten Earth and the Origin of Prebiological Moleculesf planets by space probes such as Venera 8, Mariner 9, Surveyor, Luna, and Apollo. The primitive terrestrial atmosphere might have been derived from the volcanic gases, as suggested by Rubey, but of a higher temperature than so far assumed. A thermochemical calculation of the composition of the volc
为现场
发表于 2025-3-29 03:18:17
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opinionated
发表于 2025-3-29 07:18:36
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Licentious
发表于 2025-3-29 15:05:28
Structures of Biogenic Origin from Early Precambrian Rocks of Euro-Asiapplying a new method of water separation in combination with thin chemical preparation. In contrast to the Acritarcha, these microfossils are characterized by a relatively low specific weight (close to one) and considerable fragility due to impregnation by mineral matter. They occur in Archean sedim
与野兽博斗者
发表于 2025-3-29 19:26:12
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Arrhythmia
发表于 2025-3-29 22:24:45
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你正派
发表于 2025-3-30 03:29:47
Formation of Prebiochemical Compounds in Models of the Primitive Earth’s Atmosphereere were investigated. Mixtures containing C—H—N elements were subjected to a low pressure silent electric discharge for several seconds, and the resulting effluents were analysed mainly by gas chromatography, infrared spectrometry and chemical analysis. The formation of hydrocarbons (i.e. ethylene,
chassis
发表于 2025-3-30 07:36:21
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