Perhaps this is obvious to some, but in light of a growing view that non-ribosomal peptide synthesis preceded ribosomal peptide synthesis, it would seem that the community needs a reminder, and Bernhardt spells it out in a very informative manner. Another issue with arguing for non-ribosomal ...
Any single layer is not laterally continuous for more than a few meters. Layering dips NNE typically at a shallow angle, but is locally moderately steep. Mafic layers are consistently more coarse-grained, and contain augite, inverted pigeonite, and orthopyroxene as subhedral crystals and crystal...
The greater the quantity of atmospheric CO2 ppm = the greater the growth in size and numbers of “green-growing” plant biomass. And the greater the growth in size and numbers of “green-growing” plant biomass = the greater the growth in size and numbers of reproducing species of animal b...
Syvertsen [1991] proposed that ice algae are “combed” or “sieved” from the water column by platelet ice crystals at the underside of the growing ice in the Barents Sea and thus become concentrated during the winter to produce an inoculum for the spring bloom. He suggested that the algae...
The "RNA world" hypothesis, first promoted in 1986 in apaperin the journalNatureand defended and elaborated on for more than 25 years, posits that the first stages of molecular evolution involved RNA and not proteins, and that proteins (and DNA) emerged later, said University of Illinois crop...
The molecular hydrogen rich pyrite cubic crystals have adsorbed hydrogen phosphate-iron pentacarbonyl cell edges and are surrounded by an aqueous solution containing, among other chemicals, dissolved hydrogen cyanide and carbon monoxide. These compounds serve as the starting point for proto-nucleic acid ...
We study the role of finiteness and fluctuations about average quantities for basic structural properties of growing networks. We first determine the exact... PL Krapivsky,S Redner - 《Journal of Physics A General Physics》 被引量: 130发表: 2002年 InSAR constraints on the source parameters of...
(II) complexes on a beaker scale by adjusting the volume and viscosity of the solvent so that the reaction was unfavorable. We then decided to examine the conditions for growing single crystals of related complexes, where the azo group makes the solubility and crystal growth disadvantageous [21...