Results 111 to 120 of about 10,780 (258)

Microbial Colonization of Minerals in Marine Sediments – Method Development and Ecological Significance [PDF]

open access: yes, 2011
Interactions between microorganisms and minerals significantly impact microbial diversity and geochemical cycles in diverse settings. However, methodological difficulty has inhibited past study of microbe–mineral interactions in fine-grained subsurface ...
Harrison, Benjamin Kimball
core   +1 more source

Search for impact ejecta at the Paleocene–Eocene boundary

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM).
Birger Schmitz   +6 more
wiley   +1 more source

High-resolution 3D seismic investigations of hydrate-bearing fluid escape chimneys in the Nyegga region of the Voring Plateau, Norway

open access: yes, 2008
Hundreds of pockmarks and mounds, which seismic reflection sections show to be underlain by chimney-like structures, exist in southeast part of the Vøring plateau, Norwegian continental margin.
Ker, S.   +7 more
core  

Mitochondrial Ca2+ uniporter haploinsufficiency leads to sexually dimorphic redox imbalance and metabolic remodelling in the mouse brain

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend The genetic inactivation of one Mcu allele leads to sex‐specific changes in neuronal function in adult mice, that is, the firing of action potentials and the relationship between cytosolic and mitochondrial Ca2+ levels. The ability to produce NAD(P)H by stimulated neural tissue is largely preserved in male mice but delayed in ...
Jenna Gray   +16 more
wiley   +1 more source

Hydrate-Based Methane Separation from the Drainage Coal-Bed Methane with Tetrahydrofuran Solution in the Presence of Sodium Dodecyl Sulfate

open access: yes, 2012
To determine the appropriate operating conditions for separating methane (CH4) from drainage coal-bed methane (CBM) mixed with air, a hydrate-based methane separation method is proposed.
Cai, Jing   +7 more
core   +1 more source

Methane Hydrate Field Program [PDF]

open access: yes, 2013
This final report document summarizes the activities undertaken and the output from three primary deliverables generated during this project. This fifteen month effort comprised numerous key steps including the creation of an international methane ...

core   +1 more source

Discrete element analysis of macro- and micro-mechanical properties of methane hydrate-bearing clay under different salinities

open access: yesYantu gongcheng xuebao
The mechanical behavior of methane hydrate bearing soil is closely related to the characteristics of hydrate phase equilibrium. Compared with sand, clay has smaller pore size and the pore size has a great influence on the characteristics of hydrate phase
LI Zheng 1, JIANG Mingjing 2, 3 , WANG Siyuan 1
doaj   +1 more source

Measurement and modeling of the effective thermal conductivity for porous methane hydrate samples

open access: yes, 2012
The effective thermal conductivities of gas-saturated porous methane hydrates were measured by a single-sided transient plane source (TPS) technique and simulated by a generalized fractal model of porous media that based on self-similarity. The density
Liang DeQing   +5 more
core   +1 more source

The microstructure of sediment-hosted hydrates: evidence from effective medium modelling of laboratory and borehole seismic data

open access: yes, 2009
Much of our knowledge of hydrate distribution in the subsurface comes frominterpretations of remote seismic measurements. A key step in such interpretations isan effective medium theory that relates the seismic properties of a given sediment toits ...
Minshull, T.A., Chand, S.
core  

Investigation of methane gas bubble dynamics and hydrate film growth during hydrate formation using 4-D time-lapse synchrotron X-ray computed tomography

open access: yesFrontiers in Earth Science
We present a time-lapse 4-D high-resolution synchrotron imaging study of the morphological evolution of methane gas bubbles and hydrate film growth on these bubbles.
Shadman H. Khan   +10 more
doaj   +1 more source

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