Results 41 to 50 of about 272,354 (239)

Analysis and countermeasures for adaptability of drainage and recovery technology for shale gas

Youqicang pingjia yu kaifa, 2020
Due to the own application conditions of the electric submersible pump and other drainage and gas recovery technologies, they cannot adapt to different drainage and gas recovery periods of shale gas wells in the south block of Pingqiao. In order to solve
ZHANG Honglu, XU Ke, GAO Yongmei, XU Qian, HAN Qian   +4 more
doaj  

Research of prediction of gas resource quantity in coal seam

Gong-kuang zidonghua, 2014
To use VBA language for AutoCAD secondary development and function of expand data, the paper realized assignment and query of borehole attribute information such as initial gas flow quantity of borehole, gas flow attenuation coefficient of borehole and ...
NING Zhiyong
doaj   +1 more source

About trends of improvement of technological schemes for methane recovery from the rock-coal massif [PDF]

E3S Web of Conferences, 2019
Purpose of the research was to improve efficiency of underground gas drainage from the rock-coal massif. It is substantiated that most promising solution of the problem of increasing efficiency of gas drainage from the massif is to mine additional gas ...
Kurnosov Serhii, Zerkal Volodymyr
doaj   +1 more source

Critical point network for drainage between rough surfaces [PDF]

, 2007
In this paper, we present a network method for computing two-phase flows between two rough surfaces with significant contact areas. Low-capillary number drainage is investigated here since one-phase flows have been previously investigated in other ...
A. Polycarpou, A. Weinrib, B. Berkowitz, C. Satik, C. Satik, C.V. Chrysikopoulos, C.V. Chrysikopoulos, D. Loggia, D. Wilkinson, D. Wilkinson, F. Flukiger, F. Plouraboué, F. Plouraboué, F. Plouraboué, F. Plouraboué, F. Plouraboué, G. Wagner, G.G. Pereira, H. Amundsen, H.A. Makse, K. Vandersteen, M. Fourar, M. Prat, M. Prat, M. Prat, M. Sahimi, M.J. Blunt, M.J. Blunt, N. Letalleur, O. Amyot, O. Amyot, P.G. De Gennes, P.M. Adler, R. Lenormand, R. Tarjan, R.J. Glass, R.J. Glass, R.M. Sok, S. Geoffroy, S. Geoffroy, S. Geoffroy, S.L. Bryant, S.R. Brown, V.V. Mourzenko   +43 more
core   +5 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Influence of Long Boreholes Layout and Drilling Length on Gas Drainage Based on Multifield Coupling Model of Gas-Bearing Coal

Advances in Civil Engineering, 2021
Gas drainage through long seam boreholes is an effective method to prevent gas disasters in coal mines. In this paper, a multifield coupling model of gas migration in gas-bearing coal was first established. Then, a quantitative characterization method of
Renjun Feng
doaj   +1 more source

Alkali Ion‐Incorporated HfO2 Dielectrics for Reconfigurable Neuromorphic Computing

Advanced Functional Materials, EarlyView.
This work presents an indium gallium zinc oxide (IGZO) transistor with an alkali cation‐integrated hafnium dioxide (HfO2) dielectric exhibiting synaptic behavior via ion retention. The solution‐based film fabrication strategy overcomes the limitations of atomic layer deposition (ALD) and precursor coating, enabling the control of synaptic retention ...
Seung Yeon Ki, In Cheol Kwak, Seonkwon Kim, Jihyun Kim, Dong Gue Roe, Se‐Jin Kim, Joohoon Kang, Jeong Ho Cho   +7 more
wiley   +1 more source

Risk assessment of gas control and spontaneous combustion of coal under gas drainage of an upper tunnel

International Journal of Mining Science and Technology, 2019
The adjustment of the gas drainage rate has an immediate impact on air leakage in gob, thus resulting in the change of self-heating of coal. While regulating the gas drainage parameters, the risk of spontaneous combustion of coal should be considered ...
Tingxiang Chu, Pin Li, Yuexia Chen
doaj   +1 more source

d13C tracing of dissolved inorganic carbon sources in Patagonian rivers (Argentina) [PDF]

, 2005
The main Patagonian rivers (Colorado, Negro, Chubut, Deseado, Coyle, Chico, Santa Cruz and Gallegos) were sampled between September 1995 and November 1998 to determine their chemical and isotopic compositions, the origins of the suspended and dissolved ...
Brunet, Frédéric, Depetris, Pedro J., Gaiero, Diego M., Gauthier-Lafaye, François, Probst, Jean-Luc, Stille, Peter   +5 more
core   +4 more sources

Structure–Transport–Ion Retention Coupling for Enhanced Nonvolatile Artificial Synapses

Advanced Functional Materials, EarlyView.
Nitrogen incorporation into the conjugated backbone of donor–acceptor polymers enables efficient charge transfer and deep ion embedding in organic electrochemical synaptic transistors (OESTs). This molecular‐level design enhances non‐volatile synaptic properties, providing a new strategy for developing high‐performance and reliable neuromorphic devices.
Donghwa Lee, Jinsung Kim, Sein Chung, Junho Sung, Chaeyeon Han, Eunho Lee   +5 more
wiley   +1 more source