Results 141 to 150 of about 780,643 (285)

Research on Crack Propagation and Stress Propagation in Coal‐Rock Combinations Under Different In Situ Stresses Subjected to Blasting Loads

Energy Science &Engineering, EarlyView.
A stress wave propagation model for coal‐rock combinations under in situ stress was established. Taking a coal mine in Huainan, China as the engineering background, isotropic and anisotropic numerical models were constructed. Field engineering practices were carried out to verify the reliability of the conclusions.
Jianyu Zhang, Guangming Chen, Meiyao Li, Xinyu Wang, Yuting Liu, Renjie Cui, Yixin Gong   +6 more
wiley   +1 more source

Study on Fluid Pressure in Tubing, Dynamic Stress in Reservoir, and Fracture Propagation Morphology During Variable‐Rate Hydraulic Fracturing

Energy Science &Engineering, EarlyView.
Variable‐rate hydraulic fracturing can induce unsteady flow in the tubing, thereby generating fluctuating fluid pressure near the bottom‐hole reservoir. Dynamic stress is generated in the reservoir under the action of fluctuating fluid pressure and propagates as stress waves.
Zhu Ge, Wang Chaojing, Li Weicheng
wiley   +1 more source

Research into performance optimization control strategy of a hydrostatic drive bulldozer based on the constant speed cruise. [PDF]

Sci Rep
Qiang H, Li H, Kang S, Liu K, Yang J, Luo X.   +5 more
europepmc   +1 more source

Design of the hydrostatic drive system of a road construction machine

, 2013
Consulta en la Biblioteca ETSI Industriales (8305)[EN] The object of this project is selecting the best hydraulic power transmission for the design of the hydrostatic drive of a road construction machine.
López Alegre, Guillermo
core  

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

Biophysics of lumen morphogenesis. [PDF]

Development
Lee BH, Mukenhirn M, Guyomar T, Maggipinto Y, Tanida S, Fuji K, Lu L, Romer F, Nonomura M, Hiraiwa T, Sano M, Honigmann A, Riveline D, Grapin-Botton A.   +13 more
europepmc   +1 more source

Triple Porosity Model and Its Application for Coal Seam Gas Injection Displacement of CH4

Energy Science &Engineering, EarlyView.
(1)Compared with injecting CO2, injecting N2 has a shorter penetration time, but the CH4 flow rate takes longer to stabilize, meaning the displacement process lasts longer. (2)The flow rate of CH4 rapidly decreases and gradually approaches 0; the flow rates of N2 and CO2 are 0 before breakthrough, then increase rapidly and eventually stabilize.
Qingwei Zhang, Jianqing Xiao, Chunguang Zhang   +2 more
wiley   +1 more source

The Mechano-Immune-Vascular Activation Loop: An Integrative Conceptual Framework for Positive Feedback in Hypertension. [PDF]

Int J Mol Sci
Gao S, Chen B, Chen X, Shi Q, Shen M, Han J.   +5 more
europepmc   +1 more source

Hydrostatic Drive for a Wind Turbine

, 2013
One of the main issues with conventional wind turbines is their reliability and expensive maintenance. To address this issue, the Innovative Engineers student group and the Center for Compact Efficient Fluid Power at the University of Minnesota came ...
Horvat, Bryan
core  

Trendelenburg positioning with or without norepinephrine infusion for haemodynamic support in anaesthetised hypovolemic horses

Equine Veterinary Journal, EarlyView.
Abstract Background Intraoperative haemorrhage during equine anaesthesia is a rare but potentially fatal complication requiring prompt haemodynamic support. Postural manoeuvres such as Trendelenburg (TL) positioning and vasopressor support augment venous return and improve cardiac output (CO), yet their efficacy in anaesthetised hypovolemic horses ...
Vaidehi V. Paranjape, Klaus Hopster, Ismar Lutvikadic, Bernd Driessen   +3 more
wiley   +1 more source