Results 261 to 270 of about 911,678 (332)
Physicochemical Constraints on the Abiotic Polymerization of Nucleotides Into RNA
Abstract One of the key steps in the origin of life is the polymerization of nucleotides into nucleic acids like RNA. We have quantified the energetic impact of temperature, pressure, and composition on the polymerization of nucleotides into RNA using the Gibbs function. These Gibbs energies have been used to calculate the probability that a nucleotide
D. E. LaRowe, J. M. Dick
wiley +1 more source
ABSTRACT Genetic bottlenecks are evolutionary events that reduce the effective size and diversity of natural populations, often limiting a population's ability to adapt to environmental change. Given the accelerating human impact on ecosystems worldwide, understanding how populations evolve after a genetic bottleneck is becoming increasingly important ...
Corinna Breusing +7 more
wiley +1 more source
Evaluation of Bio-Oil Quality from Hydrothermal Liquefaction of <i>Chlorella vulgaris</i> Using Entropy-TOPSIS Method. [PDF]
Santikunaporn M +5 more
europepmc +1 more source
Abstract Incipient Rift (IR) is the latest in a sequence of short‐lived rifts that form ridge‐ridge‐ridge triple junctions with the East Pacific Rise (EPR) in the Galapagos triple junction region. IR extends ∼65 km southeastward from its intersection with the EPR at 2°40′N. IR originated ∼0.4 Ma; its opening rate is ∼15 km/Myr.
Deborah K. Smith +2 more
wiley +1 more source
Melt focusing along lithosphere-asthenosphere boundary below Axial volcano. [PDF]
Kent GM +5 more
europepmc +1 more source
Mapping Geothermal Fluids Using Seismic Absorption and Scattering: A Case Study From Aluto Volcano
Abstract Seismic attenuation tomography is used to map fluids and fractures beneath the Aluto volcano geothermal field of the Main Ethiopian Rift. We present 3D models of peak delay (Δlog10Tpd ${\Delta }{\log }_{10}\left({T}_{pd}\right)$) and inverse coda quality factor (Qc−1 ${Q}_{c}^{-1}$) which are proxies for seismic scattering and absorption. High
Tesfahiwet Yemane +3 more
wiley +1 more source
Tuning ZnO photocatalysts <i>via</i> C and Ce Co-doping: a comparative approach using hydrothermal and microwave synthesis. [PDF]
Ha Luu TV +6 more
europepmc +1 more source
The Tubotomaculum Enigma and the Rise of Benthic Life During the Opening of the Western Mediterranean Basin. [PDF]
Bernardini S +10 more
europepmc +1 more source
The recurrence of geophysical manifestations at the Campi Flegrei caldera. [PDF]
Vanorio T +3 more
europepmc +1 more source

