Results 81 to 90 of about 36,161 (264)

Three‐Anchor Knotless Compression Bridges Improve Contact Mechanics in a Biomechanical Model of Large, Single‐Row Tendon Repairs

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To investigate the influence of anchor density on tendon footprint contact mechanics in knotless all‐suture anchor compression bridge constructs. Methods Unicortical polyurethane solid foam blocks with a cancellous density of 20 lb/ft3 and a cortical density of 40 lb/ft3 simulated bone.
Nisha M. Kotta, Benjamin L. Smith, Roger Quesada‐Jimenez, Anthony N. Khoury, Benjamin G. Domb   +4 more
wiley   +1 more source

Investigation of Displacement and Force Characteristics of Piezoelectric Multilayer Actuator for Active Preload Control System in Ultrasonic Motors

Micromachines
The paper represents both numerical simulations and experimental investigations of a piezoelectric active preload system that is foreseen to be applied to the active preload control system of rotors of ultrasonic piezoelectric motors.
Harsimran Singh Saini, Kristina Kilikevičienė, Andrius Čeponis   +2 more
doaj   +1 more source

Suture Slippage Is Influenced by Suture Type and Bone Density in a Knotless Lateral Row Rotator Cuff Repair: A Biomechanical Analysis

Arthroscopy, Sports Medicine, and Rehabilitation, EarlyView.
Purpose To evaluate the influence of suture material and bone density on suture slippage in knotless lateral row anchors used in rotator cuff repair. Methods Analysis of 3 different suture materials loaded into a single lateral row anchor and tested in 2 different densities (osteoporotic and normal) of Sawbone models was conducted.
Kushalappa Subbiah, Matthew Donaldson, Cameron Stephen, Allan Young, Benjamin Cass, Elizabeth C. Clarke, Margaret M. Smith   +6 more
wiley   +1 more source

Spindle Bearing Preload Control Using NI MyRIO

Applied Sciences
The article presents an application for controlling the preload of bearings in a model spindle system. The bearing preload will be implemented using piezoelectric elements, which allow for changing the preload of bearings during spindle operation, which ...
Paweł Turek
doaj   +1 more source

Blood pressure effects of SGLT2 inhibitors and GLP‐1 receptor agonists: Mechanisms, trial evidence and Real‐world data

British Journal of Clinical Pharmacology, EarlyView.
SGLT2 inhibitors and GLP‐1 receptor agonists modestly lower blood pressure across diverse patient populations, including those without diabetes. These effects appear largely independent of glycaemic control and offer additive value in high‐risk patients with overlapping comorbidities.
Andrej Belančić, Yusuf Ziya Sener, Marijana Vučković, Joseph Edgar Blais, Almir Fajkić, Emina Sher, Mislav Radić, Josipa Radić   +7 more
wiley   +1 more source

Simulace provozu bezvůlového převodu ozubenými koly s elastickými prvky [PDF]

ACC Journal, 2011
Článek obsahuje popis jednoho z principů bezvůlového převodu ozubenými koly. Detailně je řešena konstrukce bezvůlové převodovky s předlohovými hřídeli. Vůle v záběrech ozubených kol a v ložiscích jsou vymezeny pomocí předepjaté torzní tyče.
Vojtěch Klouček
doaj  

A biomechanical optimized Zr58Cu25Al14Nb3 bulk metallic glass dental implant improves peri‐implant stress distribution and bone quality under physiological loading

BMEMat, EarlyView.
This study reports a novel Zr58Cu25Al14Nb3 bulk metallic glass that possesses high mechanical strength and low elastic modulus, which further promotes efficient mechanotransduction and significantly improves peri‐implant bone quality upon cyclic occlusal loading.
Yunshu Wu, Feifei Wang, Yuan He, Yaopeng Zhang, Yuhao Zeng, Fu Zheng, Zhanqi Wei, Sukun Tian, Kinon Chen, Baoan Sun, Yuchun Sun   +10 more
wiley   +1 more source

Preload design and modal-analysis-based verification of a cam-driven opto-mechanical zoom mechanism for deep-space exploration

Advances in Mechanical Engineering
Accurate preload design is essential for the stiffness, dynamic stability, and driving reliability of precision opto-mechanical systems. This study investigates a cam-driven zoom mechanism with miniature ball bearings and spring preloading devices, and ...
Zhexin Duan, Di Lu, Fei Chen, Juan Lv, Bin Xue, Lu Wang, Jirui Yu, Mingda Li, Jianfeng Yang, Fu Li   +9 more
doaj   +1 more source

Biventricular Pressure‐Volume Loop Analysis in an LVAD Patient Optimized With Impella RP Flex

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Right ventricular (RV) failure after left ventricular assist device (LVAD) implantation is a serious complication which may necessitate temporary mechanical support in refractory cases. Here we describe a 63‐year‐old man with end‐stage ischemic cardiomyopathy and severe combined pre‐ and post‐capillary pulmonary hypertension who developed ...
Sara S. Inglis, Serena Rahme, Andrew N. Rosenbaum, Atta Behfar   +3 more
wiley   +1 more source

Influence of Contact Pressure on Performance and Crossover in Zero‐Gap Alkaline Water Electrolysis

Chemie Ingenieur Technik, EarlyView.
Cell performance and product gas quality in zero‐gap alkaline water electrolysis are influenced by the mechanical contact pressure in the electrode area. With a newly developed contact‐pressure cell, it was found that the influence of contact pressure can vary drastically, depending on the cell configuration, electrode type, and diaphragm.
Lukas Ritz, Johanna Güttler, Eugen Hoppe, Martin Müller, Anna K. Mechler, Felix Lohmann‐Richters   +5 more
wiley   +1 more source