Results 51 to 60 of about 355,354 (267)

Study on the optimal impact stand-off distance of self-excited pulsed supercritical carbon dioxide jet based on resonance effect

Meitan xuebao
The supercritical carbon dioxide (SC-CO2) jet has a wide application prospect in drilling engineering, and its low coal breaking pressure threshold and high efficiency can improve drilling efficiency.
Yujie DENG, Yong LIU, Jianping WEI, Helian SHEN, Xiang LI, Haichao LI   +5 more
doaj   +1 more source

Microscale 3D Printed Pillars and Porous Polymeric Structures: Manufacturability and Micromechanics

Advanced Engineering Materials, EarlyView.
This work demonstrates how two‐photon polymerization enables the fabrication of microscale solid and porous structures from IP‐Q, IP‐S, and IP‐PDMS resins. Combining morphological and mechanical characterization, the study provides the first systematic insights into IP‐Q mechanics and reveals how processing parameters affect structure and stiffness ...
Aikaterini Isaakidou, Mahya Ganjian, Vahid Moosabeiki, Marius Alexander Leeflang, Mahdiyeh Nouri Goushki, Pouyan Esmailzadeh Boukany, Maria Wątroba, Alexander Groetsch, Jakob Schwiedrzik, Mohammad Javad Mirzaali, Iulian Apachitei, Lidy Elena Fratila‐Apachitei, Amir Abbas Zadpoor   +12 more
wiley   +1 more source

The relation between ageing and increasing pulse pressure in upper and lower limbs

مجله دانشگاه علوم پزشکی گرگان, 2009
Background & Objective: Pulse pressure is a marker of arterial stiffness. In old age the pressure wave reflection also contribute to disparity of pulse pressure between upper and lower limbs.
Seyed Mehran Hosseini (MD, PhD), Ali Reza Maleki   +1 more
doaj  

Toward Maximum Utilization of Heavy Rare Earths in Sintered Nd–Fe–B Magnets by Grain Boundary Diffusion Source and Application Area Optimization

Advanced Engineering Materials, EarlyView.
In this work, the grain boundary diffusion process is optimized to maximize heavy rare earth utilization by strategic magnetic hardening of areas in the magnet such as corners or edges that are highly susceptible to demagnetization, as demonstrated by finite element magnetostatics simulation on an internal permanent magnet, synchronous traction motor ...
Abdullatif Durgun, Dominik Ohmer, Matthias Katter, Andreas Thul, Simon Steentjes, Hossein Sepehri Amin, Oliver Gutfleisch, Imants Dirba   +7 more
wiley   +1 more source

Wearable multichannel-active pressurized pulse sensing platform

Microsystems & Nanoengineering
With the modernization of traditional Chinese medicine (TCM), creating devices to digitalize aspects of pulse diagnosis has proved to be challenging. The currently available pulse detection devices usually rely on external pressure devices, which are ...
Yunlong Zhao, Qingxia Sun, Shixuan Mei, Libo Gao, Xikuan Zhang, Zekun Yang, Xueli Nan, Haiyan Zhang, Chenyang Xue, Junyang Li   +9 more
doaj   +1 more source

Research and design of pulse wave sphygmomanometer based on RNN

Dianzi Jishu Yingyong, 2018
Aiming at the inconvenience and discontinuity of traditional cuff sphygmomanometer, a portable pulse wave sphygmomanometer is designed. The sphygmomanometer collects the pulse wave signal of the finger end through the photoelectric sensor，preprocesses ...
Liu Yanping, Li Jie, Jin Fei
doaj   +1 more source

Optimizing Laser Ablation of Stainless Steels for Volume Removal and Surface Quality Using Burst of Pulses

Advanced Engineering Materials, EarlyView.
This study explores the ablation efficiency and surface quality of laser‐treated stainless steel alloys (AISI 304, AISI 420, and AISI 316Ti) using an ultrashort pulsed laser and varying burst parameters (MHz, GHz, and Bi‐burst). Both ablation rates and surface quality parameters are determined, including isotropy surface roughness values, highlighting ...
Dirk Obergfell, Bahman Azarhoushang, Andrés Fabián Lasagni   +2 more
wiley   +1 more source

On the Investigation of a Sustainable Two Step Laser‐Based Surface Treatment for the Functionalization of Additive Manufactured Ti–6Al–4V Components

Advanced Engineering Materials, EarlyView.
This study developed a two‐step laser‐based process for sustainable surface treatment of Ti–6Al–4 V components, combining laser polishing and direct laser interference patterning with ns and ps pulses. Key findings include significant roughness reduction, hierarchical patterning with ps pulses, and improved homogeneity. A cost function is developed for
Ignacio Tabares, Marcelo Sallese, Marcos Soldera, Ugo Andral, Eddie Kavanagh, Aidan Cloonan, Flavio Soldera, Andrés Fabián Lasagni   +7 more
wiley   +1 more source

Pulse wave response characteristics for thickness and hardness of the cover layer in pulse sensors to measure radial artery pulse

BioMedical Engineering OnLine, 2018
Background Piezo-resistive pressure sensors are widely used for measuring pulse waves of the radial artery. Pulse sensors are generally fabricated with a cover layer because pressure sensors without a cover layer are fragile when they come into direct ...
Min-Ho Jun, Young Ju Jeon, Jung-Hee Cho, Young-Min Kim   +3 more
doaj   +1 more source

Magnetoactive Metamaterials: A State‐of‐the‐Art Review

Advanced Engineering Materials, EarlyView.
Magnetoactive metamaterials combine magnetoactive composites with architected metastructures to enable contactless, tunable control of mechanical, acoustic, and elastic properties. This review highlights recent advances in their design, fabrication, and applications in soft robotics, biomedical devices, and adaptive structures and outlines future ...
Seyyedmohammad Aghamiri, Ramin Sedaghati
wiley   +1 more source