Results 61 to 70 of about 94,061 (315)

Gas chromatographic–mass spectrometric validated method for the determination of Bisphenol A in public-supply water: An investigation in Campo Grande, MS, Brazil

Orbital: The Electronic Journal of Chemistry, 2013
A new validated method is described for determining bisphenol A (BPA) in surface and public-supply water samples. Recovery rates of 91% to 113%, with coefficients of variation below 8.9%, were obtained within the limit of detection (2.4 ng L–1 ...
Émerson Montagner, Marcia Helena de Rizzo da Matta, Maria Lucia Ribeiro, Guilherme Vilalba Fortunato, Rui Mauricio Medeiros Júnior   +4 more
doaj   +1 more source

Modeling and simulation of drying operation in PVC powder production line: a pneumatic dryer model [PDF]

, 2012
A one-dimensional steady-state model is developed to simulate drying of PVC powder in a pneumatic dryer. In this model, a two-phase continuum model was used to describe the steady-state flow of a dilute dispersed phase (wet PVC powder) and a continuous ...
Ansart, Renaud, Hemati, Mehrdji, Aubin, Antoine, Lasuye, Thierry, Branly, Marc   +4 more
core  

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Online monitoring of vinyl chloride polymerization in a microreactor using raman spectroscopy [PDF]

, 2012
A novel capillary-based microfluidic device has been designed to follow the vinyl chloride polymerization reaction. The use of a co-flow generation system enabled obtaining monodisperse vinyl chloride droplets within 200 µm in diameter, each one being ...
Dorobantu Bodoc, Miruna, Prat, Laurent E., Dorobantu, Ioana-Miruna, Xuereb, Catherine, Lasuye, Thierry, Gourdon, Christophe   +5 more
core   +1 more source

Field‐Driven Activation of Solid‐State Devices in Open Circuits for Energy Harvesting and Wireless Sensing

Advanced Science, EarlyView.
Time‐varying electric fields can activate solid‐state devices such as LEDs and capacitors for energy harvesting and powering in open circuits. The response of solid‐state devices to time‐varying electric fields caused by vibrations can be utilised for smart sensing of human motions and object vibrations.
Renyun Zhang, Magnus Hummelgård, Henrik Andersson, Nicklas Blomquist, Jonas Örtegren, Hans‐Erik Nilsson, Zhong Lin Wang   +6 more
wiley   +1 more source

Effect of silica particles on adhesion strength of polyvinyl chloride coatings on metal substrates [PDF]

Iranian Journal of Chemical Engineering, 2017
The aim of this study was to improve the adhesion performance of plasticized polyvinyl chloride (PVC) coatings on steel substrates by using nanoparticles.
M. Fasihi, R. Arabzadeh, M.R. Moghbeli
doaj  

Compósitos PVC / nanotubos de carbono: preparação e caracterização de propriedades elétricas, térmicas e mecânicas [PDF]

, 2012
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2010Nanocompósitos poliméricos com nanotubos de carbono tem despertado grande interesse da ...
Araújo, Rogério Gomes
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

Electrohydraulic Folding Ring Actuators for Radially Contracting Applications

Advanced Science, EarlyView.
This work presents an Electrohydraulic Folding Ring Actuator that combines high‐performance electrohydraulic actuation with origami‐inspired folding geometry to achieve constricting radial actuation. This integration yields significant inner lumen constriction, alongside a gripping force capable of holding objects exceeding four times the actuator's ...
Gavril Yong En Tan, Quan Xiong, Jonathan William Ambrose, Zeynep Altundal, Raye Chen‐Hua Yeow   +4 more
wiley   +1 more source

Inverse Vulcanization Through Epoxide Chemistry: A Low Temperature Non‐Olefin Route to Sulfur‐Rich Polymer Networks

Angewandte Chemie, EarlyView.
Epoxide monomers undergo base‐catalyzed ring‐opening copolymerization with elemental sulfur to afford sulfur‐rich polymers under mild conditions. The resulting materials exhibit excellent mechanical performance, strong adhesion (up to 10 MPa on stainless steel), and outstanding reprocessability.
Pan Yang, Youfu Wang, Xinyuan Zhu, Jinhong Jia, Xiaofeng Wu, Tom Hasell   +5 more
wiley   +2 more sources