Results 31 to 40 of about 1,292,580 (305)

A partition of unity FEM for time-dependent diffusion problems using multiple enrichment functions [PDF]

open access: yes, 2013
An enriched partition of unity FEM is developed to solve time-dependent diffusion problems. In the present formulation, multiple exponential functions describing the spatial and temporal diffusion decay are embedded in the finite element approximation ...
Mohamed, M.S.   +7 more
core   +1 more source

Fracture prediction approach for oil-bearing reservoirs based on AVAZ attributes in an orthorhombic medium

open access: yesPetroleum Science, 2018
Fracture systems in nature are complicated. Normally vertical fractures develop in an isotropic background. However, the presence of horizontal fine layering or horizontal fractures in reservoirs makes the vertical fractures develop in a VTI (a ...
Yu-Wei Liu   +4 more
doaj   +1 more source

Release performance and kinetic behavior of volatile products from controlled pressure pyrolysis of oil shale in nitrogen atmosphere

open access: yesScientific Reports, 2023
The gas injection parameters such as temperature, pressure and duration during the in-situ pyrolysis of oil shale are important factors that affect the pore evolution and product release characteristics of oil shale. This paper takes Huadian oil shale as
Shuai Zhao, Jianzheng Su, Junwen Wu
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Co-evolution simulation experiment of source rock fluid and reservoir rock and its geological implications: a case study of Upper Triassic Xujiahe Formation, western Sichuan Basin

open access: yesShiyou shiyan dizhi, 2022
Fluid-rock interaction is critical for the formation of tight sandstone reservoirs, contributing to illustrate the distribution of high-quality reservoirs.
Jianfei MA   +5 more
doaj   +1 more source

Keeping Environmental Enrichment Enriching

open access: yesInternational Journal of Comparative Psychology, 2002
The use of novel objects as environmental enrichment devices is a key aspect of many environmental enrichment programs, regardless of whether the animals being enriched are housed in aquaria, zoos, or laboratories. The effectiveness of novel objects as enrichment devices depends on a number of factors, many of which are based on findings from ...
Kuczaj, Stan   +5 more
openaire   +3 more sources

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Spatial learning in pigs: effects of environmental enrichment and individual characteristics on behaviour and performance [PDF]

open access: yes, 2009
Contains fulltext : 77372.pdf (Publisher’s version ) (Closed access)This study investigated the effects of both environmental enrichment and individual behavioural characteristics on spatial cognitive capabilities of pigs, using a novel
Jarno Jansen   +9 more
core   +2 more sources

Main factors for large accumulations of natural gas in the marine carbonate strata of the Eastern Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2017
The natural gas accumulation zone, where the marine carbonate rock strata are developed, was formed in the eastern Sichuan Basin under the influence of several main tectonic movements (Caledonian Movement, Indosinian Movement, Yanshanian Movement, and ...
Quanyou Liu   +4 more
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

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