標題: Titlebook: Cosmochemical Evolution and the Origins of Life; Proceedings of the F J. Oró,S. L. Miller,R. S. Young (Head of Planetary Conference proceed [打印本頁] 作者: digestive-tract 時間: 2025-3-21 17:18
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書目名稱Cosmochemical Evolution and the Origins of Life讀者反饋學科排名
作者: fatuity 時間: 2025-3-21 22:16
Fitness in the Universe: Choices and Necessitiessons. One such choice is fundamental: if the proton had not so much greater mass than the electron, all matter would be fluid; and if the proton did not have exactly the same numerical charge as the electron — or some simple multiple of that charge — virtually all matter would be charged. If a unive作者: Water-Brash 時間: 2025-3-22 00:42
Galactic Clouds of Organic Moleculesthin these clouds that the formation of stars and planetary systems is believed to take place. The collapse of these clouds to form stars takes place in a very small fraction of the astronomical lifetime of a star. It is precisely at this moment that the clouds of organic molecules appear.作者: CLOT 時間: 2025-3-22 07:29
The Outer Solar System: Perspectives for Exobiology Saturn have retained the mixture of elements originally present in the solar nebula. Subsequent low temperature chemistry has produced the expected array of simple molecules giving characteristic absorption bands in the spectra of these planets. Microwave and infrared observations show that the low作者: 容易懂得 時間: 2025-3-22 09:52 作者: 阻礙 時間: 2025-3-22 15:02 作者: 阻礙 時間: 2025-3-22 17:25
Aspects of the Geologic History of Seawaterd deal about the limits to the chemistry of the oceans during the last 600 m.y., and about the mechanisms that have kept the composition of ocean water within its rather narrow bounds. We also know something, but a good deal less, about ocean water chemistry during the preceding 2500 m.y.; but there作者: DAUNT 時間: 2025-3-22 22:25
Homeostatic Tendencies of the Earth’s Atmosphererature history predicted from solar luminosity. From the fossil record it can be deduced that stable optimal conditions for the biosphere have prevailed for thousands of millions of years. We believe that these properties of the terrestrial atmosphere are best interpreted as evidence of homeostasis 作者: 可用 時間: 2025-3-23 02:37 作者: 厭惡 時間: 2025-3-23 06:34
The Development and Diversification of Precambrian Lifeth history. This progress has accrued chiefly from micropaleontological and organic geochemical studies of fine-grained, ancient cherts. Although understanding of the early biota — of its composition, diversity, paleoecology and evolution — still remains far from adequate, three particularly signifi作者: 假裝是你 時間: 2025-3-23 11:53
The Atmosphere of the Primitive Earth and the Prebiotic Synthesis of Amino Acidsiscussed by Urey. This atmosphere would have contained CH., N. with traces of NH., water and hydrogen. Only traces of NH. would have been present because of its solubility in water. UV light and electric discharges were the major sources of energy for amino acid synthesis, with electric discharges b作者: Geyser 時間: 2025-3-23 13:53 作者: CLIFF 時間: 2025-3-23 21:28
The Prebiotic Synthesis of Oligonucleotidescation in solution. It also presents preliminary results from this laboratory on the prebiotic synthesis of thymidine oligodeoxynucleotides. A discussion, based on the physicochemical properties of RNA and DNA oligomers, relevant to the molecular evolution of these compounds leads to the tentative h作者: forebear 時間: 2025-3-24 00:31 作者: Vasodilation 時間: 2025-3-24 03:35 作者: 任意 時間: 2025-3-24 08:13 作者: 嚙齒動物 時間: 2025-3-24 12:51 作者: spondylosis 時間: 2025-3-24 16:10 作者: STALE 時間: 2025-3-24 20:58 作者: Intuitive 時間: 2025-3-24 23:21 作者: 槍支 時間: 2025-3-25 06:18
The Development and Diversification of Precambrian Lifem.y. ago led to a stage of rapid diversification that culminated with the appearance of megascopic life near the close of the Precambrian. Consideration of these generalizations, and of the evidence bearing on them provides a ‘state-of-the-art’ assessment of the current status of Precambrian paleobiology.作者: Afflict 時間: 2025-3-25 09:55
Biomolecules from HCN condensation products. The direct conversion of the dicarbonyl derivative of diaminosuccinic acid to orotic acid via . at pH 8 has been observed. This conversion suggests a direct route to pyrimidines from HCN.作者: 我的巨大 時間: 2025-3-25 13:19 作者: 天空 時間: 2025-3-25 16:19
Eva Hoffman’s ,: Shifting Subject Positions are still no compelling geologic data bearing on the chemistry of ocean water during the first 1000 m.y. of Earth history. There are, however, some interesting alternatives; I would like to explore these, because they do set at least some limits on the chemistry of the most likely incubating medium for the earliest organisms.作者: 行乞 時間: 2025-3-25 23:21 作者: 輕而薄 時間: 2025-3-26 00:53
Cairong Yan,Yan Huang,Qinglong Zhang,Yan Wanypothesis that oligodeoxyribonucleotides of about 12 units may have been of sufficient length to initiate a self replicating coding system. Two models are suggested to account for the synthesis of high molecular weight oligomers using short chain templates and primers.作者: Prophylaxis 時間: 2025-3-26 04:39 作者: 碎石 時間: 2025-3-26 11:31
Homeostatic Tendencies of the Earth’s Atmosphereon a planetary scale maintained by life on the surface. Some possible mechanisms of this biological homeostasis have been noted and the implications of this concept for experimental studies pointed out.作者: 紋章 時間: 2025-3-26 16:24
The Prebiotic Synthesis of Oligonucleotidesypothesis that oligodeoxyribonucleotides of about 12 units may have been of sufficient length to initiate a self replicating coding system. Two models are suggested to account for the synthesis of high molecular weight oligomers using short chain templates and primers.作者: 撕裂皮肉 時間: 2025-3-26 18:27 作者: 商議 時間: 2025-3-26 23:47 作者: ingenue 時間: 2025-3-27 04:56 作者: jaunty 時間: 2025-3-27 08:37 作者: epidermis 時間: 2025-3-27 11:14 作者: Harass 時間: 2025-3-27 16:38 作者: 殘廢的火焰 時間: 2025-3-27 19:16 作者: LANCE 時間: 2025-3-28 01:38 作者: AWRY 時間: 2025-3-28 04:27 作者: amygdala 時間: 2025-3-28 07:40
J. Oró,S. L. Miller,R. S. Young (Head of Planetary作者: 規(guī)章 時間: 2025-3-28 14:04 作者: 酷熱 時間: 2025-3-28 16:10 作者: 不確定 時間: 2025-3-28 19:48
Eva Hoffman’s ,: Shifting Subject Positions missions) can be described and evaluated from this point of view. Uranus and Neptune are clearly deficient in light gases, but otherwise little is known with certainty about these distant planets. Again unusually high temperatures have been reported, but not above 273 K..Pluto and many of the outer作者: 廢止 時間: 2025-3-28 23:09 作者: biopsy 時間: 2025-3-29 05:56 作者: lactic 時間: 2025-3-29 07:37
Eva Hoffman’s ,: Shifting Subject Positionscases, colonial structures composed of large numbers of 1 .m diameter cells are present, that may represent bacterial remains. Most of the microfossils occur in stromatolitic cherts, but the lead-zinc orebody from which some were obtained is a fine-grained dolomitic shale..Stratigraphically, this ne作者: Lamina 時間: 2025-3-29 14:37
Eva Hoffman’s ,: Shifting Subject Positionsich occur in proteins, including all of the hydrophobic amino acids..Methionine can be synthesized by electric discharges if H.S or CH.SH is added to the reduced gases. The prebiotic synthesis of phenylalanine, tyrosine and tryptophan involves pyrolysis reactions combined with plausible solution rea作者: 肉身 時間: 2025-3-29 16:51 作者: 笨拙的我 時間: 2025-3-29 20:22
Lecture Notes in Computer Scienceved affinities appear to depend on the given amino acid and the oligonucleotide chain length. The results so far suggest that direct amino-acid nucleotide interactions could have made a contribution to the early evolution of the Genetic Code.作者: AWRY 時間: 2025-3-30 01:44
Gang Chen,Yue Peng,Chongjun Wangrops bound one to other by means bridges or hills, and formed colonia. We proposed that different stability of drops, especially stable ones, and colonia are interesting phenomena for the Origin of Life.作者: Accommodation 時間: 2025-3-30 07:11
https://doi.org/10.1007/978-94-010-2239-2Universe; earth; planet; solar system作者: Foregery 時間: 2025-3-30 10:09
978-94-010-2241-5D. Reidel Publishing Company, Dordrecht, Holland 1974作者: 帶來的感覺 時間: 2025-3-30 12:31 作者: Blazon 時間: 2025-3-30 18:31 作者: 小卷發(fā) 時間: 2025-3-30 23:06
Eva Hoffman’s ,: Shifting Subject Positionsthin these clouds that the formation of stars and planetary systems is believed to take place. The collapse of these clouds to form stars takes place in a very small fraction of the astronomical lifetime of a star. It is precisely at this moment that the clouds of organic molecules appear.作者: Spinous-Process 時間: 2025-3-31 02:23 作者: Customary 時間: 2025-3-31 08:11 作者: debase 時間: 2025-3-31 09:47 作者: Champion 時間: 2025-3-31 17:03 作者: 銀版照相 時間: 2025-3-31 21:04 作者: 大猩猩 時間: 2025-3-31 23:06
Eva Hoffman’s ,: Shifting Subject Positionsome of these occur associated with a lead-zinc ore body; others have been found in well-preserved dolomites and cherts. The variety of microfossils observed is considerable, and their state of preservation is good. Large numbers of singlecelled, colonial and multicellular organisms occur; in the lat作者: Orgasm 時間: 2025-4-1 02:57
