Results 31 to 40 of about 55,803 (255)

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

Advanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki, Lea Holritz, Winnie E. Svendsen   +2 more
wiley   +1 more source

Flow Field Simulation and Coupled Stress Field Calculation of the Natural Gas Distribution Valve

Shiyou jixie, 2015
The pressure reducing valve with complicated structure is prone to having the issues of uncoordinated deformation and severe stress concentration under working pressure conditions,leading to issues like valve body failure,reduced service life and gas ...
Zhang Bo, Li Yukun, Jing Rongjuan
doaj  

Flow and droplet evaporation characteristics of high parameter temperature and pressure reducing valves under off-design conditions

Case Studies in Thermal Engineering
The temperature and pressure reducing valve exhibits complex flow, heat, and mass transfer characteristics under off-design conditions. A three-dimensional simulation model of a multi-stage high-temperature and pressure reducing valve (MSHTPRV) was ...
Heyong Si, Yuqi Ren, Kangning Guo, Honghe Ju, Zhongxiang Tong   +4 more
doaj   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

A study on the flow-pressure characteristics & temperature changes of a novel type of pressure regulator for hydrogen decompression

Case Studies in Thermal Engineering
Hydrogen storage and transportation need to be conducted in high-pressure systems, making the study of high-pressure hydrogen pressure-reducing valves crucial.
Ji-Qiang Li, Hao-Ran Ma, Tong Wu, Zhen-Yu Gong, Zi-Lin Su, Jeong-Tae Kwon, Caizhi Zhang, Ji-Chao Li   +7 more
doaj   +1 more source

Versatile Pneumatic Twisted Coiled Actuators Enabled by Fiber‐Polymer Composite Fabrication

Advanced Functional Materials, EarlyView.
This work reports composite Pneumatic Twisted Coiled Actuators with embedded Kevlar fibers that convert pneumatic or hydraulic pressure into powerful linear motion. A novel precise manufacturing technique is used to systematically explore how design variables influence actuator mechanics and dynamics.
William J. Townsend, Jeongmin Kim, Samuel Tsai, Yichao Shi, Sameh Tawfick, James H. Pikul   +5 more
wiley   +1 more source

Performance Evaluation and Frequency Response Analysis of a Two Stage Two Spool Electrohydraulic Servovalve with a Linearized Model

Engineering Transactions, 2019
This article focuses on the performance study and frequency response analysis with the state space model of a linearized two stage two spool non-conventional electrohydraulic servovalve from a set of nonlinear state equations.
Nitesh MONDAL, Biswanath DATTA
doaj   +1 more source

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

Advanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha, Welman C. Elias, Hunter P. Jacobs, Kimberly N. Heck, Saghar Rezaie, Sadegh Yazdi, Kiheon Hong, Justin J. Dodson, Laiyuan Chen, Sean G. Mueller, Steven R. Alexander, Michael S. Wong   +11 more
wiley   +1 more source

Development of Multifunctional Hierarchically Restructured Antibacterial Neural Interfacing Electrodes via Plasma‐Enhanced Atomic Layer Deposition of Zinc Oxide Thin Films

Advanced Functional Materials, EarlyView.
ABSTRACT Next‐generation implantable neural‐interfacing devices are increasingly constrained by the coupled demands of electrode miniaturization, electrochemical performance, and implantation infection risk. Femtosecond laser–based hierarchical surface restructuring (HSR) technology has emerged as a scalable, manufacturing‐compatible platform for ...
Henna Khosla, Wesley Seche, Kriti Panchal, Steven J. May, Ekaterina Pomerantseva, Jacob Elmer, Tyler Cooper, Matthew J. Urban, Hailey Y. Maurer, Gregory A. Caputo, Jeffrey Hettinger, Shahram Amini, Gang Feng   +12 more
wiley   +1 more source

POSS‐PEG‐NHS and GSH Cocrosslink DPAV to Prepare Anticalcification Bioprosthetic Scaffold With Enhanced Reendothelization, Anti‐inflammation, and Anti‐ROS

Advanced Healthcare Materials, EarlyView.
POSS‐PEG‐NHS and GSH cocrosslinked DPAV to prepare a multifunctional anticalcification valve substitute. This modification enhances mechanical properties, hemocompatibility, and re‐endothelialization while promoting anti‐inflammatory M2 macrophage infiltration and reducing calcification.
Yuqing Zhang, Chen Qian, Yingjie He, Jingli Ding, Binhao Zhang, Minghui Zou, Xing Chen, Jinping Zhao, Cuifen Lu, Jinping Liu, Jianliang Zhou   +10 more
wiley   +1 more source