Results 131 to 140 of about 27,181 (312)

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

Advanced Science, EarlyView.
A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim, Seungin Jee, Yongnam Ahn, In‐Suh Lee, Dongeon Kim, Seongchong Park, Yujin Jung, In‐Ho Bae, Se‐Woong Baek   +8 more
wiley   +1 more source

Vibration-induced white finger in dockyard employees

, 1992
Vibration-induced white finger (VWF) is a vascular condition associated with occupational exposure to hand-transmitted vibration. The fingers are prone to intermittent blanching attacks which may be triggered by cold conditions and are usually ...
Nelson, Christopher Mark
core  

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Rapid Vibration Suppression Measures Research for Mitigating Vortex-Induced Vibration in Long-Span Steel Box Girder Suspension Bridges

Buildings
Long-span steel box girder suspension bridges are prone to vortex-induced vibrations (VIVs) due to their light weight, flexible characteristics, and low structural damping.
Zhipeng Chen, Guangwei Zhou, Changping Chen   +2 more
doaj   +1 more source

Controlling Parameter for Wave Types of Long Flexible Riser Undergoing Vortex-Induced Vibration

, 2010
The aspect ratio of slender underwater structures of deep sea platforms such as riser, oil pipelines, tension legs and anchor chains increases with the mining depth increasing, the values of which often approach to 103 order.
Chen WM(陈伟民), Zhang LW, Chen, WM (reprint author), Chinese Acad Sci, Inst Mech, Lab Environm Mech, Beijing 100190, Peoples R China.   +2 more
core  

Self‐Powered Bearing Sensing and Real‐Time Fault Diagnosis Enabled by Non‐Invasive Triboelectric Sensors and Edge AI Acceleration

Advanced Science, EarlyView.
This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu, Zhongheng Liu, Xinming Li, Jinrui Zhang, Meng Li, Yiming Guo, Lihua Han, Yanxue Wang   +7 more
wiley   +1 more source

Study of reduced order models for vortex-induced vibration and comparison with CFD results

, 2011
Vortex-induced vibration (VIV) is a dynamic phenomenon that can occur when there is fluid flow past a bluff body with flexibility. Over time, VIV can cause fatigue damage, so it may be desirable to suppress these vibrations. It is important to understand
Olenek, Christopher W.
core  

A numerical study on responses of submerged floating structures undergoing vortex-induced vibration and seismic excitation

, 2016
The dynamic responses of submerged floating structures undergoing vortex-induced vibration and seismic excitation were numerically investigated. The tube and tethers of submerged floating structures were assumed as an Euler-Bernoulli beam and the hinged ...
武晓东, Ge, F (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China., 葛斐, 康凌, 洪友士   +4 more
core   +1 more source

N‐Doping Activated Presodiation Enhances Sodium‐Ion Provision in Hard Carbon Anodes

Advanced Science, EarlyView.
Introducing pyrrolic‐N sites enables efficient presodiation and stronger PF6− capture, thus pre ‐ forming a robust inorganic‐rich SEI layer in hard carbon anodes. ABSTRACT Hard carbon (HC) is considered the most promising anode material for commercial sodium‐ion batteries (SIBs), yet it still faces critical challenges such as low initial Coulombic ...
Hua Lin, Wenxing Miao, Yanrong Shi, Guangyi Mao, Ding Ding, Jian Weng, Zhongxiong Fan, Qingchi Xu, Jun Xu   +8 more
wiley   +1 more source

Numerical Study of Vortex-Induced Vibration Characteristics of a Long Flexible Marine Riser

Journal of Marine Science and Engineering
In ocean engineering, interactions between ocean currents and risers lead to regular vortex shedding on both sides of the riser, causing structural deformation.
Jiahe Zou, Bo Zhou, Wenxin Yi, Conghong Lu, Hui Liu, Wenqing Luo   +5 more
doaj   +1 more source