Results 141 to 150 of about 173,910 (337)

Space shuttle elevon seal panel mechanism [PDF]

, 1985
The orbiter elevon seal panel mechanism controls the position of fairing panels between the orbiter wing and elevon. Early mechanism designs used linkages which approximately matched the panel motion to elevon position, depending on panel deflections to ...
Ripley, J. G.
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Fluid Loss Isolation Valve Design and Sealing Performance Study

Shiyou jixie, 2016
In the operation of multistage fracturing,well completion,production and workover,leakage is often encountered and leads to formation damage due to the failure of tool.To address the issue,the high-pressure fluid-loss isolation valve has been developed ...
Chen Shengshan, Wang Hanxiang, Li Qiang, Pang Bin, Yang Shengrong, Liu Yanxin, Zhang Xin   +6 more
doaj  

Sealing and zero leakage characteristics of a high-pressure large-sized main drive based on active pressure compensation

工程科学学报
The main drive system of a shaft full-section tunnel boring machine (TBM) may face the impact of a high-pressure mud load caused by sudden water gushing, which imposes strict requirements on the reliability of the system seal.
Lifang ZHENG, Chao FANG, Fei MA, Tengfei CAI, Man YAO   +4 more
doaj   +1 more source

EVALUATION PAVEMENT DISTRESSES USING PAVEMENT CONDITION INDEX [PDF]

, 2011
Pavement deterioration is resulted by both environmental and structural causes. It is difficult to maintain the road on the same specification that was owned at the opening and problems start to appear represented in the pavement cracks, holes and ...
kushardjoko, wahyudi, Yulipriyono, Eko, ZALTUOM, ALI MOHAMED ALI   +2 more
core  

Nature‐Inspired Sustainable Cooling for Photovoltaics with Enhanced Temperature‐Salinity Dynamics

Advanced Functional Materials, EarlyView.
Addressing solar panel overheating, a nature‐inspired cooling system mimicking ocean currents is developed. A moisture‐absorbing solution layer uses sunlight, radiative cooling, and moisture processes to create temperature/salinity gradients, accelerating circulation. The prototype cools panels by up to 18.2 °C under sunlight, sustains cooling, rapidly
Fuxiang Li, Zengguang Sui, Haosheng Lin, Yunren Sui, Francesco Vanin, Chunlei Zhang, Zonglong Zhu, Wei Wu   +7 more
wiley   +1 more source

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

Advanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source

Hydraulic conductivity of a dense prehydrated GCL: impact of free swell and swelling pressure [PDF]

, 2008
Exposure to liquids with high electrolyte concentrations or high cation valence present in landfill leachates can cause significant increases in hydraulic conductivity of clays due to a reduction in the thickness of the double layer.
Di Emidio, Gemmina, Mazzieri, F, Van Impe, William   +2 more
core  

Performance evaluation of all-metal sealing

, 2017
Shunsuke Kuhara, Shohei Yamamoto, Naohiro Ueno, Satoru Koyanagi   +3 more
openalex   +1 more source

Fermi Surface Nesting and Anomalous Hall Effect in Magnetically Frustrated Mn2PdIn

Advanced Functional Materials, EarlyView.
Mn2PdIn, a frustrated inverse Heusler alloy, showing electronic‐structure driven anomalous Hall effect with Weyl crossings, Fermi‐surface nesting and near‐zero magnetization ideal for low‐magnetization spintronics. Abstract Noncollinear magnets with near‐zero net magnetization and nontrivial bulk electronic topology hold significant promise for ...
Afsar Ahmed, Arnab Bhattacharya, Prashant Singh, Ajay Kumar, Tukai Singha, Anis Biswas, Yaroslav Mudryk, I. Das   +7 more
wiley   +1 more source