Results 201 to 210 of about 238,329 (259)
Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing
Advanced Engineering Materials, EarlyView.The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai +6 more
wiley +1 more source
Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys
Advanced Engineering Materials, EarlyView.Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak +3 more
wiley +1 more source
Fatigue Crack Initiation and Growth in Nanocrystalline Ni at Multiple Length‐Scales
Advanced Engineering Materials, EarlyView.Overview of miniaturized in situ SEM fatigue setup and resultant fatigue crack growth data for nanocrystalline Ni. The presented study focuses on the analysis of fatigue crack growth rate (FCGR) in focused ion beam‐notched microcantilevers prepared from nanocrystalline (NC) Ni as a model material.
Igor Moravcik +7 more
wiley +1 more source
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A constant-rate infusion apparatus
Toxicology and Applied Pharmacology, 1959Abstract An apparatus for infusion at constant rate which can be assembled from inexpensive commercial components has been described.
Q S, McKENNIS, E R, BOWMAN, H, McKENNIS
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Infusion at constant rate in vivo
Experientia, 1978Infusion can be maintained at a constant rate over an extended period of time in vivo by the use of an implanted diffusion chamber. Plasma 59Fe was maintained at a constant level for 10 days when infused from a s.c. implant. Injected isotope was cleared exponentially with a half-clearance time of about 8 h.
J K, Gong, C, DeLuca
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On the Fallacy of Constant Extinction Rates
Evolution, 1982Van Valen's "new evolutionary law" (Van Valen, 1973) has provoked considerable discussion of taxonomic survivorship curves (for a review, see Van Valen, 1976; Hallam, 1976) and of the Red Queen hypothesis (Maynard Smith, 1976; Stensith, 1979). Despite allegations that the linearity of Van Valen's curves may be an artifact of his method of survivorship ...
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When Rate Constants Are Not Enough
The Journal of Physical Chemistry A, 2015Real-world chemical systems consisting of multiple isomers and multiple reaction channels often react significantly prior to attaining a steady state energy distribution (SED). Detailed elementary reaction models, which implicitly require SED conditions, may be invalid when non-steady-state energy distributions (NSED) exist.
John R, Barker +2 more
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Fluorodeoxyglucose rate constants, lumped constant, and glucose metabolic rate in rabbit heart
American Journal of Physiology-Heart and Circulatory Physiology, 1987The isolated arterially perfused rabbit interventricular septum was used to measure myocardial metabolic rate for glucose (MMRGlc) and rate constants and lumped constant (LC) for the glucose analogue [18F]fluorodeoxyglucose (FDG) using a tracer kinetic model.
J, Krivokapich +3 more
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