Results 41 to 50 of about 6,866 (241)

Analysis for temperature and pressure fields in process of hydrate dissociation by depressurization [PDF]

open access: yes, 2010
An improved axisymmetric mathematic modeling is proposed for the process of hydrate dissociation by depressurization around vertical well. To reckon in the effect of latent heat of gas hydrate at the decomposition front, the energy balance equation is ...
赵振伟, Shang XC
core   +1 more source

The Effect of Variable Na/K on the CO2 Content of Slab‐Derived Rhyolitic Melts

open access: yesGeophysical Monograph Series, Page 195-208., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Michelle Muth   +2 more
wiley  

+2 more sources

The Experimental and Numerical Studies on Gas Production from Hydrate Reservoir by Depressurization

open access: yes, 2009
A set of experimental system to study hydrate dissociation in porous media is built and some experiments on hydrate dissociation by depressurization are carried out.
赵颖   +5 more
core   +1 more source

Experimental Study on CO2 Sequestration in Marine Environments During Hydrate Recovery by Depressurization Combined with Replacement

open access: yesJournal of Marine Science and Engineering
To protect the environment, sequestering CO2 during the extraction of natural gas hydrates is a highly promising carbon-neutral technology. We investigated methane extraction and CO2 storage by a combined depressurization and CO2-injection method. In the
Chi Zhang   +3 more
doaj   +1 more source

PWR depressurization analyses [PDF]

open access: yes, 1992
Early containment failure resulting from direct containment heating (DCH) has been identified as a potential contributor to the risk of operating a pressurized water reactor (PWR).
Knudson, D.L.   +2 more
core   +2 more sources

Review of Energy Efficiency of the Gas Production Technologies From Gas Hydrate-Bearing Sediments

open access: yesFrontiers in Energy Research, 2021
Even in the carbon-neutral age, natural gas will be valuable as environment-friendly fuel that can fulfill the gap between the energy demand and supply from the renewable energies.
Koji Yamamoto, Sadao Nagakubo
doaj   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Integration of Electromagnetic Geophysics Forward Simulation in Coupled Flow and Geomechanics for Monitoring a Gas Hydrate Deposit Located in the Ulleung Basin, East Sea, Korea

open access: yesEnergies, 2022
We investigate the feasibility of electromagnetic (EM) geophysics methods to detect the dissociation of gas hydrate specifically from a gas hydrate deposit located in the Ulleung Basin, East Sea, Korea via an integrated flow-geomechanics-EM geophysics ...
Hyun Chul Yoon   +3 more
doaj   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

open access: yesAdvanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Production Behavior of Hydrate-Bearing Sediments with Mixed Fracture- and Pore-Filling Hydrates

open access: yesJournal of Marine Science and Engineering, 2023
Most hydrate-bearing sediments worldwide exhibit mixed pore- and fracture-filling hydrates. Due to the high exploitation value, pore-filling hydrate production is the focus of current hydrate production research, and there is a lack of systematic ...
Yaobin Li   +6 more
doaj   +1 more source

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