Results 131 to 140 of about 2,879,970 (295)

Bending Fatigue Evaluation and Failure Modes of Ultra‐Thin Silicon Chips on Flexible Substrates

FlexTech, EarlyView.
This study investigates the fatigue lifetime of 20‐μm‐thick chips under bending deformation. Three failure modes are identified: metal pad wearing, metal stress migration, and gold wire break. The underlying mechanisms are analyzed through micro‐scale characterization, and temperature effects on fatigue lifetime are explored.
Ying Chen, Chenyu Niu, Zhaoxian Wang, Xin Song, Dongliang Liu, Ming Xu, Yingchao Zhang, Xue Feng   +7 more
wiley   +1 more source

Flight Testing of Latch Valve with Lightweight LV-Servo Direct Drive Mechanism

In the field of rocket technology, the latch valve assumes a pivotal role in regulating the flow of fuel gases and liquids to ensure the requisite energy supply. This project endeavors to innovate by replacing the conventional step motor mechanism with a
Wei, Shih-Sin, Hsu, Jui-Cheng, Huang, Hao-Che, Chang, Chih-Shin   +3 more
core  

A Semi‐Automated Microfluidic Platform Employing Machine Learning Analysis to Study Adhesion Kinetics in Acute Myeloid Leukemia

Microscopy Research and Technique, EarlyView.
We have developed a semi‐automated shear flow platform using bright‐field optics and a machine‐learning analysis algorithm to dissect tumor‐microenvironment interactions. The algorithm quantifies the extent of adhesion at the single‐cell level and delivers consistent results within minutes instead of hours, facilitating high‐throughput analysis ...
Driti Ashok, Dennis Raith, Gabriel Kalweit, Maria Kalweit, Anusha Klett, Justus Duyster, Jonas Bermeitinger, Tanja Nicole Hartmann   +7 more
wiley   +1 more source

Knee joint line obliquity alters lateral meniscal root tension, tibiofemoral subluxation and compartment‐specific contact pressures

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose The objective was to measure effects of joint line obliquity (JLO) on meniscus posterior root tension, tibiofemoral subluxation and contact pressures. It was hypothesised that a medial JLO would increase medial meniscal (MM) root tension, medial tibiofemoral subluxation and medial compartment contact pressure, and vice versa for ...
Shuntaro Nejima, Petra Bonacic‐Bartolin, Simon Ball, Andy Williams, Richard van Arkel, Andrew Amis   +5 more
wiley   +1 more source

Antikythera Mechanism PTMs 21-34, Fragment C

, 2019
These PTMs were constructed from images of all known remaining surfaces of the Antikythera Mechanism fragments housed in the National Archaeological Museum in Athens, Greece.
Antikythera Mechanism Research Project
core   +15 more sources

Tribological Behavior and Attachment Force Regulation of Bioinspired Claw-Spines. [PDF]

Biomimetics (Basel)
Zhang Y, Wu X, Wu H, Wu X, Zhang F, Jia B, Li X, Pang J.   +7 more
europepmc   +1 more source

Servo Navigation and Phase Equalization Enhanced by Run‐Time Stabilization (PEERS) for 3D EPI Time Series

Magnetic Resonance in Medicine, EarlyView.
Purpose To enhance time‐resolved segmented imaging by synergy of run‐time stabilization and retrospective data‐driven phase correction. Methods A segmented 3D EPI sequence for fMRI time series is equipped with servo navigation based on short orbital navigators and a linear perturbation model, enabling run‐time correction for rigid‐body motion, bulk ...
Malte Riedel, Thomas Ulrich, Samuel Bianchi, Klaas P. Pruessmann   +3 more
wiley   +1 more source

Open-source hardware design and construction of a modular robotics kit for STEM education. [PDF]

HardwareX
Calle-Arévalo L, Gonzales JF, Naula JAO, Lituma DGZ.   +3 more
europepmc   +1 more source

Robust Position Control of an Electro‐Hydraulic Actuator via Metaheuristic Optimization of a Fractional‐Order PID Controller

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar, Davut Izci, Serdar Ekinci, Mohammad Salman, Mohammad Al‐Rabayah, Ali Akdagli, Ali Yildiz, Filiz Karaomerlioglu, Gökhan Yüksek   +8 more
wiley   +1 more source

Performance improvement of AC servo motor PID control with backlash compensation using a Hybrid Genetic Algorithm-Grey Wolf Optimization approach. [PDF]

Sci Rep
Fayad SA, Shaban M, Attia M, Abdelwahab SAM.   +3 more
europepmc   +1 more source