Results 291 to 300 of about 249,769 (331)

Ecogenomics and limnological dynamics of a new Thiocapsa species blooming in the whole water column of a karstic lake

open access: yesLimnology and Oceanography, EarlyView.
Abstract Purple sulfur bacteria (PSB) of the family Chromatiaceae (Gammaproteobacteria) can perform chemo‐ and photo‐lithoautotrophy (through anoxygenic photosynthesis) in anoxic layers of freshwater stratified (including meromictic) lakes. This group has been extensively studied via physiological and ecological approaches, albeit their genomics has ...
Pedro J. Cabello‐Yeves   +7 more
wiley   +1 more source

Development of Environment‐Time‐Dependent Material Selection Maps for Alloy 718 Under Crevice Conditions in Aerated Seawater

open access: yesMaterials and Corrosion, EarlyView.
This study introduces material selection maps—that is, charts indicating crevice corrosion resistance as a function of temperature and electrochemical potential—illustrating their applicability using nickel‐based alloy 718 as a case study. Crevice corrosion susceptibility maps developed in this study are a new approach that shows how environmental ...
Ahmed Reyad   +3 more
wiley   +1 more source

Humus on the Rocks—Water Storage Capacity of Tangelhumus is Essential for Water Retention in Limestone Mountains

open access: yes
Journal of Plant Nutrition and Soil Science, EarlyView.
Axel Göttlein, Michael Kohlpaintner
wiley   +1 more source

Stagnation Point Combustion of a Monopropellant [PDF]

open access: possibleAIAA Journal, 1981
The steady-state stagnation point transport and reaction equations describing premixed monopropellant combustion have been investigated approximating the chemical processes by an endothermic solid-phase pyrolysis and a one-step exothermic unidirectional gas-phase reaction.
G. Adomeit, W. Hock
openaire   +2 more sources

Local preconditioning in a stagnation point [PDF]

open access: possible12th Computational Fluid Dynamics Conference, 1995
Local preconditioning yields desirable effects such as convergence acceleration and preservation of accuracy in the incompressible limit, but these come at the expense of robust* Fellow AIAA. t ~ e m b e r AIAA. SMember AIAA. §Member AIAA. ness. Current research focuses on making the various preconditioned Euler discretizations that have been developed
Lisa Mesaros   +3 more
openaire   +1 more source

AN UNSTEADY STAGNATION-POINT FLOW

The Quarterly Journal of Mechanics and Applied Mathematics, 1989
We consider the oscillatory flow at a two-dimensional stagnation point. We show, following the initiation of the motion, that the solution always develops a singularity at a finite time, and we discuss the implications of this for the flow over a cylinder which performs transverse harmonic ...
N. Riley, R. Vasantha
openaire   +2 more sources

Stagnation‐point Flow in Magnetohydrodynamics

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1967
AbstractThe inviscid three‐dimensional stagnation‐point in magnetohydrodynamics is investigated in full generality. The analytic character of the flow depends on just two parameters, one of which characterizes the streamline pattern on the body and the other the effective interaction of the electromagnetic field. The pattern, according to linear terms,
G. S. S. Ludford, R. C. Boger
openaire   +2 more sources

Unsteady stagnation point flow

Applied Scientific Research, 1972
In this paper we consider the changes in the two-dimensional stagnation point flow against a plane wall when the wall is impulsively set in motion in its own plane. In particular a solution which describes the final approach to the ultimate steady state is determined.
David G. Drake, P. N. Choudhury
openaire   +2 more sources

MIXED CONVECTION AT A STAGNATION POINT

The Quarterly Journal of Mechanics and Applied Mathematics, 1995
We are concerned with the mixed convective flow at a two-dimensional stagnation point on a heated horizontal boundary. The forced flow may be a stagnation-point flow of either forward or rear type, and the free convective element is due to a pressure gradient that is induced by temperature variations along the boundary.
N. Riley, Norsarahaida Amin
openaire   +2 more sources

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