Results 181 to 190 of about 2,697,360 (401)

Atrioventricular heart valves of indigenous cattle (bos indicus): the morphology and morphometry [PDF]

open access: yesEurasian Journal of Veterinary Sciences
Aim: The aim of the study was to detect the gross morphology and measurement of the length of chordae tendineae of bovine atrioventricular heart valves for future bioprosthesis.
Md. Nazrul Islam   +3 more
doaj  

Programmable Microscale Actuation of Hydrogels With Tunable Response via Printing on Particles

open access: yesAdvanced Materials Technologies, EarlyView.
We fabricate microscale hydrogels with precisely tunable phase transition temperatures (23–60 °C) by particle‐templated two‐photon polymerization using chemically tailored inks. Multi‐material printing enables stepwise thermal actuation through sequential volume changes at distinct VPTTs, while pH‐dependent hysteresis drives anisotropic actuation with ...
Xueting Shen   +4 more
wiley   +1 more source

A High Throughput Microfluidic Approach for the Continuous Manufacture of Ibuprofen Nanocrystals

open access: yesAdvanced Materials Technologies, EarlyView.
A robust, continuous manufacturing platform using a high‐throughput microfluidic reactor addresses key scalability challenges in pharmaceutical production. This process efficiently generates crystalline ibuprofen nanoparticles with superior control over size and distribution.
Shorooq Abukhamees   +5 more
wiley   +1 more source

Low‐Strain Flexible Ink‐Based Sensors Enable Hyperelastic Inflation Perception Via Geometric Patterning for Balloon‐Type Robots

open access: yesAdvanced 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
wiley   +1 more source

Transplante de valva mitral heteróloga: Nova alternativa cirúrgica: estudo clínico inicial Heterologous mitral valve transplant: New surgical technique: initial clinical trial

open access: yesBrazilian Journal of Cardiovascular Surgery, 1993
A substituição da valva mitral tem sido realizada, nestes 30 anos, usando-se o modelo aórtico. Embora o resultado clínico, na maioria dos pacientes seja satisfatório, existem, restrições específicas, tanto entre as biopróteses, como nas próteses ...
Mário O Vrandecic   +8 more
doaj  

Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials

open access: yesAdvanced 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

A insuficiência da valva aórtica na dissecção crônica da aorta proximal: troca ou reconstrução valvar? Aortic valve insufficiency in chronic aortic dissection: valve replacement or reconstruction?

open access: yesBrazilian 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  

Twenty-Five–Year Experience With the Bjork-Shiley Convexoconcave Heart Valve [PDF]

open access: bronze, 2005
William J. Blot   +8 more
openalex   +1 more source

Unilateral Ankle‐Foot Exoneuromusculoskeleton with Balance‐Sensing Feedback for Self‐Help Telerehabilitation after Stroke

open access: yesAdvanced Robotics Research, EarlyView.
This study introduces a hybrid robot that integrates mechanical assistance by musculoskeletons (i.e., soft pneumatic muscle with rigid exoskeletal extensions), neuromuscular electrical stimulation, and vibrotactile feedback in a lightweight wearable mechatronic complex applicable to the paretic ankle–foot poststroke for gait restoration. The system can
Fuqiang Ye   +16 more
wiley   +1 more source

Home - About - Disclaimer - Privacy