Results 51 to 60 of about 1,642,916 (241)

Multifunctional Adhesive Hydrogel for Rapid Cardiac Hemostasis and Antibacterial Protection

Advanced Materials Technologies, EarlyView.
A multifunctional polyacrylamide/gelatin/tannic acid hydrogel (PGT) is presented for rapid cardiac hemostasis under wet, dynamic conditions. Surface tannic acid coating enables instantaneous wet adhesion, accelerates coagulation, and confers antibacterial activity within a single platform.
Seoha Kim, Kaeun Chae, Inseon Kim, Kye Il Joo, Chang Sup Kim, Seunghun S. Lee   +5 more
wiley   +1 more source

The effect of natural fracture on the fluid leak-off in hydraulic fracturing treatment

Petroleum, 2019
Fluid leak-off phenomenon plays a critical role in hydraulic fracturing operation. This phenomenon can be very impressive in successful operation of hydraulic fracturing.
Amir Ghaderi, Jaber Taheri-Shakib, Mohamad Amin Sharifnik   +2 more
doaj   +1 more source

Modeling hydraulic fracture in heterogeneous rock materials using permeability-based hydraulic fracture model

, 2020
Hydraulic fracturing is one of the most important techniques for enhancing oil/gas production. The permeability-based hydraulic fracture (PHF) model, which is based on the smeared-crack method and considers the interaction between the pore pressure and ...
Ming Li, P. Guo, D. Stolle, Li Liang, Yitao Shi   +4 more
semanticscholar   +1 more source

Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators

Advanced Materials Technologies, EarlyView.
Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich, Florian Hartmann, Herbert Shea   +2 more
wiley   +1 more source

Investigation on the influence factors for the fracturing effect in fractured tight reservoirs using the numerical simulation

Science Progress, 2022
Taking the fractured tight reservoir of the Fengcheng Formation in Mahu Depression as the research object, the RFPA software, a numerical simulation platform of real fracture process, was used to study the fracture propagation laws in fractured tight ...
Jian Xiong, Junjie Liu, Wei Lei, Xiangjun Liu, Lixi Liang, Yi Ding   +5 more
doaj   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source

Study of stress field induced by natural fracture and its influence on hydraulic fracture propagation

Journal of Petroleum Exploration and Production Technology
The change of fracture propagation direction caused by stress interference between fractures is one of the main reasons that affect shale gas productivity.
Shanzhi Shi, Mingxing Wang, Wei Tang, Yuting Pan, Haozeng Jin, Jiale He, Lei Hou, Bobo Xie, Xi Chen, Zhao Lv   +9 more
doaj   +1 more source

The influence mechanism of natural fractures on hydraulic fracture propagation in Mabei shale reservoir

Frontiers in Earth Science
The resource potential of shale in Fengcheng formation in Mabei is huge, but it must rely on efficient hydraulic fracturing technology to obtain reservoir stimulation and achieve economic development.
Gan Renzhong, Fu Lianming, Ruan Dong, Wu Yue, Hu Sicheng, Ding Yi, Liu Xiangjun   +6 more
doaj   +1 more source

Experimental and Numerical Simulation Study of Hydraulic Fracture Propagation during Coalbed Methane Development

Geofluids, 2021
The extraction of low-permeability coalbed methane (CBM) has the dual significance of energy utilization and safe mining. Understanding hydraulic fracturing mechanism is vital to successful development of CBM.
Qingshan Ren, Yaodong Jiang, Pengpeng Wang, Guangjie Wu, Nima Noraei Danesh   +4 more
doaj   +1 more source

Programmable Multi‐Axially Aligned Aerogels via Sequential Freeze‐Casting for Tailored Anisotropy and Tunable Mechanics

Advanced Science, EarlyView.
Conventional single‐gradient freeze‐casting typically produces unidirectional porous architectures with limited transverse connectivity. The Sequential Hybridization by Infiltration and Freeze‐casting Technique (SHIFT) addresses this constraint by integrating secondary aligned structures within a preformed primary scaffold.
Kiho Sung, Sungchul Shin
wiley   +1 more source