Results 121 to 130 of about 4,984 (269)

An integrated platform for 2‐D and 3‐D optical and electrical mapping of arrhythmias in Langendorff‐perfused rabbit hearts

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Integrated multimodal platform for panoramic cardiac mapping in isolated heart experiments. On the left, an image of the experimental setup during data acquisition showing a Langendorff‐perfused rabbit heart surrounded by three optical cameras (CAM A, B and C) positioned 120° apart, each coupled with high‐power LEDs for panoramic
Jimena Siles   +8 more
wiley   +1 more source

New generation methods for spur, helical, and spiral-bevel gears [PDF]

open access: yes
New methods for generating spur, helical, and spiral-bevel gears are proposed. These methods provide the gears with conjugate gear tooth surfaces, localized bearing contact, and reduced sensitivity to gear misalignment.
Coy, J. J.   +4 more
core   +1 more source

Self‐Assessment to Improve Mechanical Design Understanding

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT The primary responsibility of a mechanical engineer is to solve technical problems. This task requires not only comprehensive fundamental knowledge but also requires strong methodical competencies. In addition, heuristic skills are essential. Spatial thinking and design comprehension are equally important. Exercises, projects, and design tasks
Timo Roth   +2 more
wiley   +1 more source

Dynamics of early planetary gear trains [PDF]

open access: yes
A method to analyze the static and dynamic loads in a planetary gear train was developed. A variable-variable mesh stiffness (VVMS) model was used to simulate the external and internal spur gear mesh behavior, and an equivalent conventional gear train ...
August, R.   +3 more
core   +1 more source

Reduction of gear pair transmission error with tooth profile modification [PDF]

open access: yes, 2008
The gear noise problem that widely occurs in power transmission systems is typically characterised by one or more high amplitude acoustic signals. The noise originates from the vibration of the gear pair system caused by transmission error excitation ...
Alfano, G   +2 more
core  

Development of a Coaxial Over‐the‐Scope Bimanual Robot Enabling Lesion‐Aligned Manipulation for ESD

open access: yesThe International Journal of Medical Robotics and Computer Assisted Surgery, Volume 22, Issue 3, June 2026.
ABSTRACT Background Endoscopic Submucosal Dissection (ESD) requires high expertise as conventional endoscopes cannot provide simultaneous traction and dissection, resulting in unstable visualisation and inconsistent cutting depth. Methods A coaxial over‐the‐scope bimanual robotic system was developed to enable lesion‐aligned traction and dissection ...
Chanwoo Kim   +8 more
wiley   +1 more source

NASA transmission research and its probable effects on helicopter transmission design [PDF]

open access: yes
Transmissions studied for application to helicopters in addition to the more conventional geared transmissions include hybrid (traction/gear), bearingless planetary, and split torque transmissions. Research is being performed to establish the validity of
Coy, J. J.   +2 more
core   +1 more source

Effectiveness of Virtual Reality for Pain Relief in Procedures Related to Obstetrics and Gynaecology: A Systematic Review and Meta‐Analysis of Randomised Controlled Trials

open access: yesBJOG: An International Journal of Obstetrics &Gynaecology, Volume 133, Issue 7, Page 1358-1372, June 2026.
ABSTRACT Background Immersive virtual reality (VR) technology offers a non‐invasive, non‐pharmacological approach to reduce pain perception in patients undergoing diagnostic or interventional procedures. Objective To systematically evaluate the efficacy of immersive VR technology in reducing pain perception during obstetric and gynaecological ...
Jhia Jiat Teh   +5 more
wiley   +1 more source

渐开线球齿轮万向节装配误差对传动误差影响的研究

open access: yesJixie chuandong, 2014
Because of using involute spherical gear double degree of freedom of movement and force transmission characteristic,the involute spherical gear gimbal is widely used in the field of bionic,but the assembly error is an important factor affected the ...
曹永晟, 盛德号, 张立杰, 李婷
doaj  

Gear optimization [PDF]

open access: yes
The use of formal numerical optimization methods for the design of gears is investigated. To achieve this, computer codes were developed for the analysis of spur gears and spiral bevel gears. These codes calculate the life, dynamic load, bending strength,
Chen, Xiang   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy