Results 121 to 130 of about 142,365 (357)

Main controlling factors and development patterns of high-quality igneous rock reservoirs in the mesozoic of the Qikou Sag

open access: yesFrontiers in Earth Science
The Mesozoic volcanic reservoirs in Qiqikou Sag are complex and diverse. Identifying the characteristics and main controlling factors of high-quality volcanic reservoirs is the key to improve the reserves and production of oil and gas in this area.
Changwei Chen   +8 more
doaj   +1 more source

Cummingtonite-bearing volcanic rocks: first evidence in the Central Slovak Volcanic Field

open access: yesGeologica Carpathica, 2018
Within the framework of reinterpretation of the depositional evolution of the Komjatice depression, presence of cummingtonite in weakly lithified sediment has been detected.
Šarinová Katarína, Rybár Samuel
doaj   +1 more source

Tuning Cellular Perception in Pluripotent Stem Cells through Topography, Stiffness, and Patterning

open access: yesAdvanced NanoBiomed Research, EarlyView.
Micro‐ and nanotopographical cues, substrate stiffness, and mechanical patterning synergistically direct pluripotent stem cell fate and function by tuning cellular perception at the biointerface. Pluripotent stem cells (PSCs), comprised of embryonic stem cells and induced PSCs, hold tremendous therapeutic potential.
Yuan Jiang   +7 more
wiley   +1 more source

Fault textures in volcanic conduits: evidence for seismic trigger mechanisms during silicic eruptions. [PDF]

open access: yes, 2005
It is proposed that fault textures in two dissected rhyolitic conduits in Iceland preserve evidence for shallow seismogenic faulting within rising magma during the emplacement of highly viscous lava flows. Detailed field and petrographic analysis of such
Dingwell, DB, Tuffen, H
core  

Probabilistic enhancement of the Failure Forecast Method using a stochastic differential equation and application to volcanic eruption forecasts

open access: yes, 2018
We introduce a doubly stochastic method for performing material failure theory based forecasts of volcanic eruptions. The method enhances the well known Failure Forecast Method equation, introducing a new formulation similar to the Hull-White model in ...
Bevilacqua, Andrea   +5 more
core   +1 more source

Gypsum Gardens: Self‐Assembled Tubular Structures of Calcium Sulfate with Relevance for the Detection of Extraterrestrial Life

open access: yesAngewandte Chemie International Edition, EarlyView.
Chemical gardens are self‐assembled architectures with “life‐like” morphologies that form in the absence of any biological activity. Here we show that such structures can also be obtained by contacting reservoirs of calcium and sulfate ions, under conditions that plausibly emulate those prevailing on early Mars.
Selina Reigl   +5 more
wiley   +1 more source

Dental fluorosis in the European roe deer (Capreolus capreolus): A review of the pathological changes in the enamel of fluorotic cheek teeth and the abnormal pattern of dental wear in affected dentitions

open access: yesThe Anatomical Record, EarlyView.
Abstract This article reviews the pathological changes in the enamel of permanent mandibular cheek teeth and their sequelae in European roe deer from regions polluted by anthropogenic fluoride emissions. The primary (developmental) changes of fluorotic roe deer enamel are hypomineralization and microstructural aberrations, including enamel hypoplasia ...
Uwe Kierdorf, Horst Kierdorf
wiley   +1 more source

The Manufacture of Rochia nilotica rings: The chaîne opératoire Identified for Lapita Sites in Vanuatu

open access: yesArchaeology in Oceania, EarlyView.
ABSTRACT Rings made on marine shell are a conspicuous artefact form found throughout cultural sequences for much of the Pacific over millennia. Despite their importance in both recent and ancient times, in‐depth consideration of the manufacturing processes involved in shell ring production are limited.
Michelle C. Langley   +2 more
wiley   +1 more source

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