Results 21 to 30 of about 2,335,191 (211)
Progress in Earth and Planetary Science, 2022 Prebiotic chemical evolution and the emergence of life in the seafloor hydrothermal systems of Hadean Earth is among the most plausible and popular hypotheses for the origin of earthly life.
Takazo Shibuya, Ken Takai
doaj +1 more source
Thioester synthesis through geoelectrochemical CO2 fixation on Ni sulfides
Communications Chemistry, 2021 Thioesters are often suggested to be key intermediates in primordial metabolism, but prebiotic CO2 fixation routes to thioesters remain elusive. Here, the authors show nickel sulfide, partially reduced to Ni(0) with realistic geoelectric potentials ...
Norio Kitadai +8 more
doaj +1 more source
Recognizing Text Genres with Simple Metrics Using Discriminant Analysis [PDF]
, 1994 A simple method for categorizing texts into predetermined text genre categories using the statistical standard technique of discriminant analysis is demonstrated with application to the Brown corpus.
Cutting, Douglass, Karlgren, Jussi
core +5 more sources
The influence of surface treatment of PVD coating on its quality and wear resistant [PDF]
, 2019 The article deals with a determination of the influence of a cutting edge preparation on the quality and wear resistance of coated cutting tools. Cutting inserts made from a sintered carbide with a deposited layer of PVD coating were selected for ...
Malotová, Šárka +3 more
core +1 more source
Hermes, 2002 This article provides a developmental description of the lexis used by an academic discourse community in formation. Casual conversations of six post-graduate students, native speakers of English, were recorded in the Applied Linguistics common room in ...
Joan Cutting
doaj +1 more source
An Innovative Experimental Study of Corner Radius Effect on Cutting Forces [PDF]
, 2014 The cutting forces are often modelled using edge discretisation methodology. In finish turning, due to the smaller corner radii, the use of a local cutting force model identified from orthogonal cutting tests poses a significant challenge. In this paper,
BISSEY BRETON, Stéphanie +3 more
core +6 more sources
Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting
Nature Communications, 2021 Activation of narrow-bandgap photocatalysts holds key to applicable solar-to-hydrogen energy conversion. Here, the authors demonstrate effective sequential cocatalyst decoration for such narrow-bandgap photocatalysts to realise highly-efficient hydrogen ...
Zheng Wang +14 more
doaj +1 more source
SPH method applied to high speed cutting modelling [PDF]
, 2007 The purpose of this study is to introduce a new approach of high speed cutting numerical modelling. A Lagrangian smoothed particle hydrodynamics (SPH)- based model is arried out using the Ls-Dyna software.
Chieragatti, Rémy +4 more
core +3 more sources
CHIMIA, 2006 Nuclear magnetic resonance (NMR) methods at the Institute of Molecular Pharmacy (IMP) provide crucial information in several fundamental themes in drug discovery.
Brian Cutting
doaj +1 more source
An investigation on the mechanics of nanometric cutting and the development of its test-bed [PDF]
, 2003 The mechanics of machining at a very small depth of cut (100 nm or less) is not well understood. The chip formation physics, cutting forces generation, resulting temperatures and the size effects significantly affect the efficiency of the process and ...
Cheng, K, Guo, XJ, Holt, R, Luo, X
core +1 more source