Pyrite and Organic Compounds Coexisting in Intrusive Mafic Xenoliths (Hyblean Plateau, Sicily): Implications for Subsurface Abiogenesis [0.03%]
侵入超基性副结体（意大利西西里岛希布勒平原）中黄铁矿与有机化合物的共存及其对深部生命起源的意义
Vittorio Scribano,Sergei K Simakov,Claudio Finocchiaro et al.
Vittorio Scribano et al.
Pyrite and organic matter closely coexist in some hydrothermally-altered gabbroic xenoliths from the Hyblean Plateau, Sicily. The representative sample consists of plagioclase, Fe-oxides, clinopyroxene, pyrite and minor amounts of many othe...
The Limited Roles of Autocatalysis and Enantiomeric Cross-Inhibition in Achieving Homochirality in Dilute Systems [0.03%]
稀溶液中实现单一手性的分子自动催化与对映体交叉抑制作用的有限性研究
Axel Brandenburg
Axel Brandenburg
To understand the effects of fluctuations on achieving homochirality, we employ a Monte-Carlo method where autocatalysis and enantiomeric cross-inhibition, as well as racemization and deracemization reactions are included. The results of ea...
Marko Vitas,Andrej Dobovišek
Marko Vitas
A new definition of life is proposed and discussed in the present article. It is formulated by modifying and extending NASA's working definition of life, which postulates that life is a "self-sustaining chemical system capable of Darwinian ...
Theoretical Study of Possible Reaction Mechanisms for the Formation of Carbodiimide in the Interstellar Medium (ISM) and Polarizabilities of Carbodiimide [0.03%]
关于星际介质（ISM）中异氰酸胺形成可能反应机制的理论研究及异氰酸胺的极化率研究
Manisha Yadav,Shivani,Alka Misra et al.
Manisha Yadav et al.
The Structure of carbodiimide has been studied by using quantum chemical methods. Carbodiimide (HNCNH) has been detected towards Sagittarius B2 (N) in interstellar medium (ISM). Two reaction mechanisms have been proposed to study the format...
Bin Wang
Bin Wang
The primordial RNA world is a hypothetical era prior to the appearance of protein and DNA, when RNA molecules were the sole building blocks for early forms of life on Earth. A critical concern with the RNA-world hypothesis is the instabilit...
The Origin of tRNA Deduced from Pseudomonas aeruginosa 5' Anticodon-Stem Sequence : Anticodon-stem loop hypothesis [0.03%]
来自于Pseudomonas aeruginosa 5'反密码子-茎序列的tRNA起源：反密码子-茎环假说
Kenji Ikehara
Kenji Ikehara
The riddle of the origin of life is unsolved as yet. One of the best ways to solve the riddle would be to find a vestige of the first life from databases of DNA and/or protein of modern organisms. It would be, especially, important to know ...
Prebiotic Syntheses Under Shock in the Water - Formamide - Potassium Bicarbonate - Sodium Hydroxide System [0.03%]
水-甲酰胺-碳酸氢钾-氢氧化钠体系受冲击条件下的增殖反应
Valery G Shtyrlin,Valery A Borissenok,Nikita Yu Serov et al.
Valery G Shtyrlin et al.
Syntheses under shock in nitrogen bubbled samples of the water - formamide - bicarbonate - sodium hydroxide system at pH 8.63, 9.46 and 10.44 were performed in the stainless steel preservation capsules. The maximum temperature and pressure ...
Chiral Recognition in Cold Gas-Phase Cluster Ions of Carbohydrates and Tryptophan Probed by Photodissociation [0.03%]
冷气相碳水化合物和色氨酸聚集体离子的光电离手性识别研究
Doan Thuc Nguyen,Akimasa Fujihara
Doan Thuc Nguyen
Chiral recognition between tryptophan (Trp) and carbohydrates such as D-glucose (D-Glc), methyl-α-D-glucoside (D-glucoside), D-maltose, and D-cellobiose in cold gas-phase cluster ions was investigated as a model for chemical evolution in i...
The Birthplace of Proto-Life: Role of Secondary Minerals in Forming Metallo-Proteins through Water-Rock Interaction of Hadean Rocks [0.03%]
原始生命的诞生地：二次矿物通过太古宙岩石的水岩作用形成金属蛋白的作用
Kazumi Yoshiya,Tomohiko Sato,Soichi Omori et al.
Kazumi Yoshiya et al.
The surface of Hadean Earth was mainly covered with three types of rocks-komatiite, KREEP basalt and anorthosite-which were remarkably different from those on the modern Earth. The water-rock interaction between these rocks and water provid...
Israel Muñoz-Velasco,Carlos García-Ferris,Ricardo Hernandez-Morales et al.
Israel Muñoz-Velasco et al.
Of the six known autotrophic pathways, the Wood-Ljungdahl pathway (WL) is the only one present in both the acetate producing Bacteria (homoacetogens) and the methane producing Archaea (hydrogenotrophic methanogens), and it has been suggeste...