Results 71 to 80 of about 1,909,180 (166)

Dynamic responses characteristics of bedrock and overburden layer slope with anchored frame piles based on shaking table test

Scientific Reports
To adapt to higher and steeper slope environments, this paper proposes a new type of support structure called an anchored frame pile. The study designed and conducted a series of shaking table tests with three-way loading.
Lei Wang, Qianhui Pu, Guangpeng Chen, Jing Lian, Changwei Yang, Mingming Dai   +5 more
doaj   +1 more source

A decades-long fast-rise-exponential-decay flare in low-luminosity AGN NGC 7213

, 2018
We analysed the four-decades-long X-ray light curve of the low-luminosity active galactic nucleus (LLAGN) NGC 7213 and discovered a fast-rise-exponential-decay (FRED) pattern, i.e.
Xie, Fu-Guo, Yan, Zhen
core   +1 more source

Non-equilibrium multiphase wellbore flow characteristics in solid fluidization exploitation of marine gas hydrate reservoirs

Natural Gas Industry B, 2019
In the core process of fractured marine gas hydrate (hereinafter referred to as hydrate) particles being transported up to the surface platform by airtight pipeline in the solid fluidization exploitation of marine gas hydrate reservoirs, influenced by ...
Na Wei, Jinzhou Zhao, Wantong Sun, Shouwei Zhou, Liehui Zhang, Qingping Li, Qiang Fu, Xin Lü, Lijun Zheng   +8 more
doaj   +1 more source

Response of a Model of CO Oxidation with CO Desorption and Diffusion to a Periodic External CO Pressure

, 2006
We present a study of the dynamical behavior of a Ziff-Gulari-Barshad model with CO desorption and lateral diffusion. Depending on the values of the desorption and diffusion parameters, the system presents a discontinuous phase transition between low and
Avrami, Avrami, Avrami, Bond, Christmann, E. Machado, Ehsasi, Frank, G.M. Buendía, Hua, Imbhil, Jensen, Johnson, Kolmogorov, Lopez, Machado, Machado, Marro, P.A. Rikvold, Pavlenko, Tomé, Zhdanov, Ziff, Ziff   +23 more
core   +1 more source

Control Strategy of the Brake Dynamics for Railway Vehicles Equipped with Anti-Slip-Device [PDF]

, 2006
From the point of view of railway vehicle braking processes it is an important requirement to maintain the roll-ing-motion-state of the wheels, i.e. the macro-sliding-free rolling contact between the vehicle wheels and the rail-head, since in the course ...
Békefi, Elemér, Zobory, István
core  

Fast Collisionless Reconnection Condition and Self-Organization of Solar Coronal Heating

, 2007
I propose that solar coronal heating is a self-regulating process that keeps the coronal plasma roughly marginally collisionless. The self-regulating mechanism is based on the interplay of two effects.
Brown J. C., Bulanov S. V., Dmitri A. Uzdensky, Kulsrud R. M., Landi E., Lee L. C., Masuda S., Parker E. N., Scholer M., Thompson C., Tsuneta S., Ugai M., Uzdensky D. A., Uzdensky D. A.   +13 more
core   +1 more source

Studies on Submersible Short-Circuit Blowing Based on Orthogonal Experiments, Back Propagation Neural Network Prediction, and Pearson Correlation Analysis

Applied Sciences
Short-circuit blowing is a crucial technical approach for ensuring the rapid surfacing of submersibles. In order to investigate the law, L18(37) orthogonal experiments based on a proportional short-circuit blowing model test bench were conducted ...
Xiguang He, Bin Huang, Likun Peng, Jia Chen   +3 more
doaj   +1 more source

Study on evaluation of microscopic water locks and macroscopic water seals in low-permeability sandstone gas reservoirs

AIP Advances
The problem of water coning into the sandstone gas reservoirs has become one of the major concerns in terms of productivity and increased operating costs.
Zhongwei Zhu, Mingqing Kui, Weijun Shen, Zhiyu Xu, Zhengliang Jia   +4 more
doaj   +1 more source

Rarefied Nozzle Flow Computation Using the Viscosity-Based Direct Simulation Monte Carlo Method

Fluids
Micro-nozzles are essential for enabling precise satellite attitude control and orbital maneuvers. Accurate prediction of performance parameters, including thrust and specific impulse, is critical, necessitating careful design of these nozzles. Given the
Deepa Raj Mopuru, Nishanth Dongari, Srihari Payyavula   +2 more
doaj   +1 more source

Machine Learning-Based Backpressure Unstart Prediction and Warning Method for Combined Cycle Engine Hypersonic Inlet-Oriented Wide Speed Range

International Journal of Aerospace Engineering
Inlet unstart prediction and warning are strictly crucial to the operation of hypersonic engines, especially for combined cycle engines where implementation across a wide speed range poses significant challenges.
Ke Min, Tanbao Hong, Zejun Cai, Lianchen Yu, Chengxiang Zhu, Jianping Zeng   +5 more
doaj   +1 more source