Results 81 to 90 of about 59,417 (344)

Treatments for femoroacetabular impingement [PDF]

The hip is a ball and socket joint in which the femoral head (the ball) articulates with the acetabulum (the socket). In a condition called femoroacetabular impingement (FAI) the hip has a shape abnormality and is no longer perfectly spherical. The hip
Wall, Peter D. H.
core  

Mechanical Activation of Piezo1 Drives Osteoarthritis Through Kdm5c‐Mediated Epigenetic Silencing

Advanced Science, EarlyView.
Excessive mechanical stress activates Piezo1, triggering Ca2+‐dependent cytoskeletal forces that deform the nucleus and reduce H3K4me3. Kdm5c demethylates H3K4me3 at Col2a1 and Runx3 promoters. Kdm5c knockout rescues degradation. Repurposed telmisartan directly inhibits Kdm5c, blocking this axis and showing disease‐modifying efficacy in mouse OA models
Tianyou Kan, Xuran Li, Han Wang, Lin Sun, Yao Wang, Jiangdong Wu, Junqi Cui, Yiqi Yang, Kai Yuan, Linyang Chu, Liao Wang, Hanjun Li, Mengning Yan, Zhifeng Yu   +13 more
wiley   +1 more source

Imprint of the Reguibat Promontory (West Africa) on the Appalachian, Mauritanide and Souttoufide Belts During the Assembly of Pangaea

Geosciences
During the course of the Carboniferous to Permian, large parts of eastern Laurentia and northern Gondwana were affected by the Variscan Orogeny accompanying the assembly of Pangea. Here, we concentrate on the Appalachian belt of eastern Laurentia and the
Michel Villeneuve, Omar Guillou, Andreas Gärtner, Abdelkrim El Archi, Abdelmohsine Aghzer, Hervé Bellon, Paul A. Mueller, Papa Moussa Ndiaye, Nasrrddine Youbi, Ulf Linnemann, Michel Corsini   +10 more
doaj   +1 more source

[Open therapy of femoroacetabular impingement] [PDF]

, 2010
Elimination of an intraarticular femoroacetabular impingement conflict.
Siebenrock, KA, Tannast, M, Moritz Tannast, Klaus-Arno Siebenrock   +3 more
core   +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

Effect of Rotation and Hole Arrangement in Cold Bridge-Type Impingement Cooling Systems

International Journal of Turbomachinery, Propulsion and Power, 2019
Experimental activity has been performed to study different impingement cooling schemes in static and rotating conditions. Geometry replicates a leading-edge cold bridge system, including a radial supply channel and five rows of film-cooling and ...
Lorenzo Cocchi, Alessio Picchi, Bruno Facchini   +2 more
doaj   +1 more source

Numerical investigations of heat transfer and pressure drop characteristics in multiple jet impingement system

, 2017
Jet impingement is one of the best methods for achieving high heat transfer coefficient in single phase and has been a topic of active research for several decades, involving both experiments and computations.
P. Penumadu, A. Rao
semanticscholar   +1 more source

Study of in-flight and impact dynamics of non-spherical particles from HVOF guns [PDF]

, 2009
High velocity oxygen fuel thermal spray has been widely used to deposit hard composite materials such as WC-Co powders for wear-resistant applications. Unlike gas atomized spherical powders, WC-CO powders form a more complex geometry.
Gu, Sai, S. Gu, Kamnis, S., S. Kamnis
core   +1 more source

Bioinspired Passive Flow Routing to Mitigate Thrombosis in Prosthetic Heart Valves and Cardiovascular Devices

Advanced Science, EarlyView.
Bioinspired passive flow routing mitigates thrombosis in cardiovascular devices by redirecting a small fraction of forward flow into stagnation‐prone regions. Inspired by avian alula and aircraft slat mechanisms, strategically placed routing channels restore washout around mechanical heart valves, reducing low‐shear exposure by four orders of magnitude
Yevgeniy Kreinin, Mark Epshtein, Yahel Talmon, Tirosh Mekler, Itay Or, Mahli Raad, Gil Bolotin, Josué Sznitman, Netanel Korin   +8 more
wiley   +1 more source

The Effect of Impingement Velocity and Angle Variation on the Erosion Corrosion Performance of API 5L-X65 Carbon Steel in a Flow Loop

Metals, 2018
Erosion corrosion performance of API 5L-X65 carbon steel was investigated at three different impingement velocities (3, 6 & 12 m/s), five different angles (15, 30, 45, 60, & 90°), and with/without solid particles (average particle size of 314
Ihsan UlHaq Toor, Hafiz Muzammil Irshad, Hassan Mohamed Badr, Mohammed Abdul Samad   +3 more
doaj   +1 more source