Results 151 to 160 of about 191,200 (355)
Evidence for a mitral valve origin of the left ventricular third heart sound.
, 1969 John Fleming
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Advanced Photonics Research, EarlyView.Electron acceleration using multipetawatt femtosecond lasers and subcritical density plasmas achieves a maximum charge of 245 nC, with an injection rate of up to 100 nC per picosecond. The charge variation with plasma density, initially increasing and then decreasing, arises from the competition between the injection of multiple plasma waves and laser ...
Xi‐Chen Hu +9 more
wiley +1 more source
The use of valve prostheses in congenital heart diseases in children and adolescents
, 1968 Kazumi Taguchi +5 more
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Advanced Robotics Research, EarlyView.Integrating proprioceptive capabilities in balloon‐type robots enhances safe human–machine interactions. Traditional pressure estimates are inadequate due to nonlinear relationships. Instead, embedding stretchable sensors effectively measures deformation. This design optimizes sensor geometry to minimize damage risks.
Wenchao Yue +6 more
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Adherence of Glucan-Positive and Glucan-Negative Streptococcal Strains to Normal and Damaged Heart Valves [PDF]
, 1978 C H Ramírez-Ronda
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Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials
Advanced Robotics Research, EarlyView.Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira +5 more
wiley +1 more source
Brazilian Journal of Cardiovascular Surgery, 1993 Com o objetivo de avaliar os resultados clínicos e ecocardiográficos tardios obtidos com a correção da insuficiência aórtica decorrente da dissecção crônica da aorta proximal, foram estudados 48 pacientes consecutivos operados entre janeiro de 1980 e ...
Ricardo Beyruti +5 more
doaj
Heart valve replacement with reinforced aortic heterografts
, 1968 Marian I. Ionescu +6 more
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Advanced Robotics Research, EarlyView.Inflatable kirigami crawlers are fabricated from heat‐sealable textiles and achieve motion through cyclic pneumatic actuation. Strategically placed kirigami cuts guide asymmetric deformation, doubling contraction compared to traditional pouches and forming scale‐like surfaces.
Burcu Seyidoğlu +3 more
wiley +1 more source