Results 1 to 10 of about 16,757 (142)
Fluid flow behaviour in vesicular basalt samples from the Skoll High, Vøring Margin [PDF]
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesThis study presents the fluid flow testing results of 32 lava flow samples recovered from IODP Sites U1571/U1572 (145–315 mbsf) on the Skoll High, Vøring Margin.
Peter Betlem +8 more
doaj +2 more sources
Fixed point combinators as fixed points of higher-order fixed point generators [PDF]
Logical Methods in Computer Science, 2020 Corrado B\"ohm once observed that if $Y$ is any fixed point combinator (fpc), then $Y(\lambda yx.x(yx))$ is again fpc. He thus discovered the first "fpc generating scheme" -- a generic way to build new fpcs from old.
Andrew Polonsky
doaj +1 more source
Remarks on Gorenstein Weak Injective and Weak Flat Modules [PDF]
Algebra Colloquium, 2020 In this paper, we introduce Gorenstein weak injective and weak flat modules in terms of, respectively, weak injective and weak flat modules; the classes of Gorenstein weak injective and weak flat modules are larger than the classical classes of Gorenstein injective and flat modules. In this new setting, we characterize rings over which all modules are
Zhao, Tiwei, Xu, Yunge
openaire +2 more sources
Communications in Algebra, 2006 ABSTRACT Pure-injective and RD-injective R-modules over domains R have been investigated by many authors. We introduce another class of R-modules, called weak-injective modules, which turn out to be useful in addressing several unanswered questions between the two classes of modules.
Fuchs, László, Lee, Sang Bum
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Enhanced oil recovery mechanisms of polymer flooding in a heterogeneous oil reservoir
Petroleum Exploration and Development, 2021 Taking reservoir rocks and fluids of the Daqing, Dagang and Changqing oilfields as research objects, the EOR mechanisms and technical approach of polymer flooding were discussed.
Xiangguo LU +7 more
doaj +1 more source
Molecules, 2021 Water-soluble polymers, mainly partially hydrolyzed polyacrylamide (HPAM), have been used in the enhanced oil recovery (EOR) process. However, the poor salt tolerance, weak thermal stability and unsatisfactory injectivity impede its use in low ...
Xiaoqin Zhang +4 more
doaj +1 more source
Prediction of Pressure Increase during Waste Water Injection to Prevent Seismic Events
Energies, 2022 A considerable increase of seismicity has occurred in the USA in the last decade (2009–2020) with an annual average of 345 M3+ earthquakes. Numerous field cases have shown that excessive well pressure due to a high injection rate may have triggered ...
Lu Jin, Andrew K. Wojtanowicz, Jun Ge
doaj +1 more source
Injectivity theorem for pseudo-effective line bundles and its applications [PDF]
, 2017 We formulate and establish a generalization of Koll'ar's injectivity theorem for adjoint bundles twisted by a suitable multiplier ideal sheaf. As applications, we generalize Koll'ar's vanishing theorem, Koll'ar's torsion-freeness, generic vanishing ...
Fujino, Osamu, Matsumura, Shin-ichi
core +2 more sources
Module categories for group algebras over commutative rings [PDF]
, 2012 We develop a suitable version of the stable module category of a finite group G over an arbitrary commutative ring k. The purpose of the construction is to produce a compactly generated triangulated category whose compact objects are the finitely ...
Benson, Dave +3 more
core +2 more sources
The Local Larmor Clock, Partial Densities of States, and Mesoscopic Physics [PDF]
, 2001 The local Larmor clock is used to derive a hierarchy of local densities of states. At the bottom of this hierarchy are the partial density of states for which represent the contribution to the local density of states if both the incident and outgoing ...
Buttiker, M.
core +3 more sources