Results 71 to 80 of about 1,642,916 (241)

Receptogenesis in a Vascularized Robotic Embodiment

Advanced Science, EarlyView.
Functional augmentation of situated robots via ex novo hardware generation extends physical adaptability. Drawing inspiration from open circulatory systems for mass and function redistribution, this study presents a vascularized robotic composite exhibiting receptogenesis ‐ the on‐demand construction of sensors ‐ from internal fluid reserves based on ...
Kadri‐Ann Pankratov, Leonid Zinatullin, Hans Priks, Adele Metsniit, Urmas Johanson, Tarmo Tamm, Alvo Aabloo, Edoardo Sinibaldi, Indrek Must   +8 more
wiley   +1 more source

Simulation of Hydraulically Fractured Wells

IOR 1997 - 9th European Symposium on Improved Oil Recovery, 1997
Fractured wells are frequently encountered in petroleum engineering. They can be hydraulically fractured wells to improve oil production or wells intersecting natural fractures. Due to the presence of the fractures, the flow behaviour and the pressure distribution in the vicinity of the fractured well are complex and the numerical modelling for this ...
Y. Ding, E. Chaput
openaire   +2 more sources

Cohesive-zone effects in hydraulic fracture propagation

Journal of the mechanics and physics of solids, 2019
Hydraulic fracture presents an interesting case of crack elasticity and fracture propagation non-linearly coupled to fluid flow. Hydraulic fracture (HF) is often modeled using the Linear Elastic Fracture Mechanics (LEFM), which assumes that the damaged ...
D. Garagash
semanticscholar   +1 more source

Self‐Assembly of Organic–Inorganic Copolymers Toward Bio‐Inspired Cementitious Composites

Advanced Science, EarlyView.
Organic–inorganic copolymerization of calcium silicate hydrate and thioctic acid produces a self‐organized nanocomposite inspired by the disordered collagen–mineral architecture of trabecular bone. The resulting material combines a compressive strength above 300 MPa with intrinsic physical reprocessibility, retaining over 80% of its strength and energy
Zonglin Xie, Suning Li, Fuwen Zhong, Gongkun Xiang, Mustapha Jamaa Garba, Yi Tian, Jun Wu, Zhiwu Yu, Qiang Yuan   +8 more
wiley   +1 more source

Influence of orthogonal joint and stress ratio coefficients on hydraulic fracture propagation

Youqicang pingjia yu kaifa, 2020
The joints in the stratum have a greater impact on the formation of complex fracture networks with hydraulic fractures. In order to study the propagation behavior of hydraulic fractures when they encounter orthogonal joints, the hydraulic fracturing of ...
ZHANG Bohu, ZHOU Changman, ZHENG Yongxiang, LIU Jianjun   +3 more
doaj  

Mechanochemical Activation of a Bridged‐Exciplex Optical Force Probe

Advanced Science, EarlyView.
A bridged‐exciplex optical force probe is synthesized, switching from solvatochromic charge‐transfer emission in the latent state to intense locally excited emission upon activation. This dual photophysical response with additional changes in quantum yield and fluorescence lifetime enables precise environmental sensing and distinct optical readouts ...
Ronja Schumann, Andreas Bock, Felix Majer, Michael Baumann, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko, Alexander J. C. Kuehne, Robert Göstl   +8 more
wiley   +1 more source

Modelling of hydrofracturing experiments of granite samples [PDF]

E3S Web of Conferences
Based on laboratory experiments and numerical modelling, the propagation of hydraulic fracturing fractures in cylindrical granite samples caused by viscous fluid pumping is described. Comparison of simulation results and laboratory measurements show that
Lapin Vasily, Stanchits Sergey, Filev Egor   +2 more
doaj   +1 more source

Hydraulic Pressure‐Programmed Molecular Transport in Tough Hydrogels

Advanced Science, EarlyView.
Hydraulic pressure is introduced as a programmable parameter for regulating molecular transport in tough hydrogel membranes. Reversing the pressure direction accelerates or slows transport, tuning characteristic transport times over a 65‐fold range while achieving molecular separation and controlled delivery.
Yijie Cheng, Shahd Alnasser, Akhiri Zannat, Zhenda He, Jiayi Zeng, Lenan Zhang, Sungmin Hong, Xinyue Liu   +7 more
wiley   +1 more source

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in a Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Energies
This paper presents the results of experiments on the study of a hydraulic fracture’s interaction with a preexisting fracture. A distinctive feature of the conducted experiments is the ability to use ultrasonic transmitting monitoring to measure the ...
Evgeny V. Zenchenko, Sergey B. Turuntaev, Victor A. Nachev, Tikhon K. Chumakov, Petr E. Zenchenko   +4 more
doaj   +1 more source

Sputtering Mechanism of an Unsintered Organic–Inorganic Sputtering Target for Perovskite Solar Cells

Advanced Energy Materials, EarlyView.
An unsintered MAPbI3 sputtering target fabricated via a mechanochemical route enables large‐area vacuum deposition of perovskite absorber layers, while revealing an ion–photon coupled decomposition mechanism that governs target erosion and film composition under RF plasma exposure.
Doha Lim, Rira Kang, Yewon Lee, Hyun Hwi Lee, Mee‐Yi Ryu, Muntae Hwang, So‐Yeon Ju, Fang Luo, Byunghong Lee, Han‐Ki Kim   +9 more
wiley   +1 more source