Results 41 to 50 of about 10,780 (258)

Influence of gas hydrate morphology on the seismic velocities of sands

, 2009
This paper reports the results of a series of resonant column tests on specimens where gas hydrate has been formed in sands using an “excess water” technique.
Rees, Emily V., Clayton, Christopher R. I., Priest, Jeffrey A.   +2 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Variability in aerobic methane oxidation over the past 1.2 Myrs recorded in microbial biomarker signatures from Congo fan sediments [PDF]

, 2014
Methane (CH4) is a strong greenhouse gas known to have perturbed global climate in the past, especially when released in large quantities over short time periods from continental or marine sources.
Wabakanghanzi, JN, Spencer, Robert G. M., Dinga, Bienvenu, Spencer, Robert, Handley, Luke, Talbot, H.M., Wagner, T, Schefuß, E., Spencer-Jones, CL, Spencer-Jones, Charlotte, Talbot, Helen, Wagner, T., Spencer-Jones, C.L., Bienvenu, DJ, Bienvenu, D.J., Mann, P.J., Poulsen, JR, Wabakanghanzi, J.N., Handley, L, Wagner, Thomas, Talbot, Helen M., Wabakanghanzi, Jose N., Mann, Paul, Spencer-Jones, Charlotte L., Schefuß, Enno, Wagner, Thomas; id_orcid, Talbot, HM, Poulsen, John R., Spencer, R.G.M., Wabakanghanzi, Jose, Poulsen, J.R., Mann, PJ, Spencer, RGM, Spencer, Robert G.M., Dinga, Bienvenu Jean, Poulsen, John, Schefuß, E, Mann, Paul J., Handley, L.   +38 more
core   +1 more source

Methane hydrate thermodynamic phase stability predictions in the presence of salt inhibitors and their mixture for offshore operations

Chemical Thermodynamics and Thermal Analysis, 2021
A thermodynamic model is developed and used in this study to predict the phase equilibrium conditions of a methane -aqueous salt inhibitor -water hydrate system.
Venkata Ramana Avula, Venkata Swamy Nalajala, Golamari Siva Reddy, M.J.A. Prince   +3 more
doaj   +1 more source

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

Advanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li, Corin T. Scott, Taku Suzuki‐Osborne, John P. Lowe, Dominic Taylor, Mariolino Carta, Neil B. McKeown, Andrew D. Burrows, Lucia H. Mascaro, Frank Marken   +9 more
wiley   +1 more source

Methane Gas Hydrate Morphology and its Effect on the Stiffness and Damping of some Sediments [PDF]

, 2009
Gas hydrates are ice–like compounds found in deep sea sediments and permafrosts. Concise detectionand quantification of natural methane gas hydrate deposits, will allow for a more robust assessmentof gas hydrate as a potential energy resource or natural ...
Rees, Emily V L, Rees, Emily V.L.
core  

Introgressed Variation in TaMYB7‐A1 Drives Graded Dormancy and Climate‐Adaptive Pre‐Harvest Sprouting Resistance in Wheat

Advanced Science, EarlyView.
TaMYB7‐A1 directly activates TaABI5 to enhance ABA signaling and regulate ABA‐GA homeostasis, enforcing seed dormancy. Its superior allele, derived from wild einkorn introgression, harbors a MITE insertion that elevates expression and two amino acid substitutions that enhance transcriptional activity, collectively generating graded PHS resistance for ...
Hao Wang, Dongzhi Wang, Yafei Guo, Qi Zheng, Min Zhang, James Simmonds, Jian Hou, Xuemei Liu, Xuelei Lin, Xiaomin Bie, Xiansheng Zhang, Xiaohui Li, Yuan Chen, Xueyong Zhang, Cristobal Uauy, Fei Lu, Chengcai Chu, Zhixi Tian, Jun Xiao   +18 more
wiley   +1 more source

Effect of grain characteristics on the behaviour of disseminated methane hydrate bearing sediments. [PDF]

, 2008
Results of seismic surveys are routinely used to assess the presence of methane hydrate in deep ocean sediments. Accurate estimates of hydrate distribution and volume within the sediment are required to assess the potential of gas hydrate as an energy ...
Kingston, Emily, Clayton, Chris R.I., Priest, Jeffery, Best, Angus I., Best, Angus, Clayton, Chris   +5 more
core  

Characterization of methane hydrate extraction influenced by hydraulic fractures using a coupled thermo-hydro-mechanical-chemical model

Frontiers in Earth Science
The low permeability of the methane hydrate-bearing sediment limits the methane gas extraction. To enhance methane hydrate extraction, hydraulic fracturing can be a promising approach to improve the hydrate reservoir permeability by creating a fracture ...
Hao Sun, Xiangyu Xu, Chao Jia
doaj   +1 more source

ZrO2 Aerogel‐Supported Pd Nanoparticles for Photothermal CO2 Reduction

Advanced Science, EarlyView.
Nanoparticle‐based aerogels are promising catalysts for photothermal reactions due to optical transparency, high surface area, and low thermal conductivity. Here, we present deposition of Pd nanoparticles on ZrO2 aerogel granules by a wet‐impregnation approach.
David Kiwic, Linard Räz, Elena Tervoort, Markus Niederberger   +3 more
wiley   +1 more source