Results 61 to 70 of about 12,083 (257)

Training-induced increase in Achilles tendon stiffness affects tendon strain pattern during running [PDF]

PeerJ, 2019
Background During the stance phase of running, the elasticity of the Achilles tendon enables the utilisation of elastic energy and allows beneficial contractile conditions for the triceps surae muscles. However, the effect of changes in tendon mechanical
Amelie Werkhausen, Neil J. Cronin, Kirsten Albracht, Gøran Paulsen, Askild V. Larsen, Jens Bojsen-Møller, Olivier R. Seynnes   +6 more
doaj   +2 more sources

Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications

Advanced Materials Technologies, EarlyView.
A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley   +1 more source

Passive Directional Water Transport on Superhydrophobic Gradient Textures Fabricated by Direct Laser Interference Patterning

Advanced Materials Technologies, EarlyView.
Microstructures fabricated by two‐beam DLIP combining spatial‐period and roughness gradients are fabricated to enhance directional transport of water droplets. The coupled gradients increase transport distance by 160% and strongly suppress motion against the gradient, demonstrating an effective strategy for controlled droplet manipulation.
Tianhao Wu, Marcos Soldera, Fabian Ränke, Andrés Fabián Lasagni   +3 more
wiley   +1 more source

Use of personal protective equipment and cognitive load during cardiopulmonary resuscitation – A randomized cross-over simulation-based study

Resuscitation Plus
Background: The use of personal protective equipment (PPE) is essential during cardiopulmonary resuscitation (CPR) to prevent disease transmission, but its impact on rescuer fatigue and CPR quality remains debated.
Johannes Heymer, Daniel Räpple, Matthias Ott, Florian Dengler, Christina Jaki, Daniel Bent, Anna Hegar   +6 more
doaj   +1 more source

The Effects of Stiff Stent-Grafts on Segmental Aortic Stiffness and Left Ventricular Mass: A Pilot Swine Model Study

Graduate Medical Education Research Journal, 2019
Mentor: Jason MacTaggart Program: General Surgery Introduction: Endovascular stent-grafting is a first-line therapy for many aortic pathologies, but stent-grafts are constructed using non-compliant materials that stiffen a segment of the aorta.
Paul Aylward, Alexey Kamenskiy, Jason MacTaggart   +2 more
doaj   +1 more source

Programmable Pneumatic Actuator System for a Bioinspired Artificial Colon

Advanced Materials Technologies, EarlyView.
A modular soft robotic colon simulator driven by programmable pneumatic actuation is developed to mimic physiological and pathological‐like motility patterns of the large intestine. Finite element–guided design and distributed control enable anatomically realistic deformation for peristalsis, segmentation, and mass movements, supporting capsule ...
Andrew Bickerdike, Bo Tian, Xizheng Fang, Zepeng Wang, Yang Liu, Lucy Adams, Shyam Prasad   +6 more
wiley   +1 more source

Cardio Compression Control Device: Development, Calibration and Testing [PDF]

Bioautomation, 2009
Cardio-pulmonary resuscitation (CPR) is a life-saving first aid which is part of the treatment given in case of sudden cardiac death. According to the American Heart Association (AHA) 2005 Guidelines for CPR, there are three key components related to the
Vessela Krasteva, Tatyana Neycheva, Nikolay Mudrov, Irena Jekova, Zhecho Kostov, Jean-Philippe Didon   +5 more
doaj  

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

A novel approach to recoil pad enhancement in rifles via topological design with material extrusion and SLA

Frontiers in Mechanical Engineering
Excessive recoil in firearms reduces shooting accuracy, causes user discomfort, and increases mechanical wear over time. This creates a need for effective solutions that can improve recoil management.
Mamoun Alshihabi, Tülin Bilge, Mevlüt Yunus Kayacan, Muhammad Umar Farooq, Shafahat Ali   +4 more
doaj   +1 more source