使更活跃
发表于 2025-3-28 17:03:37
On Important Stages of Geosphere and Biosphere Evolutionrature jumps and cosmic factors (these may be the atmosphere and or a thick layer of water or same rocks) and the accessibility of biogenes, which are macroelements and microelements. Two geosphere-related canalizing vectors of biosphere evolution can be discerned. One is associated with an irrevers
BIPED
发表于 2025-3-28 19:44:25
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daredevil
发表于 2025-3-28 23:14:34
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花束
发表于 2025-3-29 04:34:56
Comets, Carbonaceous Meteorites, and the Origin of the Biospheredered. It is now widely accepted that comets and carbonaceous meteorites played an important role in the delivery of water, organics and life-critical biogenic elements to the early Earth and facilitated the origin and evolution of the Earth’s biosphere. However, the detection of embedded microfossi
nepotism
发表于 2025-3-29 07:21:49
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就职
发表于 2025-3-29 14:05:21
The Prebiotic Phase of the Origin of Life as Seen by a Physical Chemistical memory which allows the natural selection and thus an adaptive evolution of living systems. The known carriers of that biological memory in the currently existing terrestrial living systems are only the DNA molecules. However, the existence of a primitive ‘memory’ without a DNA support is chara
Crohns-disease
发表于 2025-3-29 19:30:46
Prebiotic Carbohydrates and Their Derivatesrebiotic conditions are summarized and discussed. The synthesis of monosaccharides from formaldehyde and lower carbohydrates (glycolaldehyde, glyceraldehyde, dihydroxyacetone) can be catalyzed by different compounds such as lead, phosphate and borate ions and several natural minerals. Lower carbohyd
blister
发表于 2025-3-29 21:50:23
Theoretical and Computer Modeling of Evolution of Autocatalytic Systems in a Flow Reactorpermits experimental tests, is proposed. The concept leads to an important statement—organisms emerging (out of the Earth and/or inside an experimental reactor) have to be based on biochemical bases, different from those occurring on our planet. According to the concept the predecessor of living bei
空气
发表于 2025-3-30 03:20:09
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Thymus
发表于 2025-3-30 06:39:23
Hammerhead Ribozyme: Ligation vs. Cleavagery hammerhead ribozymes with improved ligation activity by altering the sequence of trans hammerhead motifs. RNA ligation activity of trans hammerheads was shown to be affected significantly by minor changes in non-conservative regions. In particular, introduction of heptanucleotide bulge into stem