نتایج جستجو برای: partial pressure sensor

تعداد نتایج: 801801  

A. Amralizadeh A. Hamed A. Khazaei A. M. Shayan M. Taleh Masooleh

     This study introduces a wearable in-shoe system for real-time monitoring and measurement of the plantar pressure distribution of the foot using eleven sensing elements. The sensing elements utilized in ShrewdShoe have been designed in an innovative way, they are based on a barometric pressure sensor covered with a silicon coating. The presented sensing element has great linearity up to 300...

2004
Xiaodong Wang Baoqing Li Zhixiong Xiao Sang Hwui Lee Harry Roman Onofrio L Russo Ken K Chin Kenneth R Farmer

A diaphragm-based interferometric fiber optical microelectromechanical system sensor with high sensitivity is designed and tested for on-line detection of the acoustic waves generated by partial discharges (PD) inside high-voltage power transformers. In principle, the sensor is made according to Fabry Perot interference, which is placed on a micro-machined rectangular silicon membrane as a pres...

Journal: :Respiratory physiology & neurobiology 2008
Jinjun Jiang Lei Gao Wei Zhong Shen Meng Ben Yong Yuanlin Song Xiangdong Wang Chunxue Bai

The accurate measurement of arterial blood oxygen partial pressure often plays an important role in the clinical assessment of patients with respiratory conditions such as an acute exacerbation of chronic obstructive pulmonary disease and acute lung injury/adult respiratory distress syndrome. An oxygen-sensitive fluorescence indicator with high biocompatibility was synthesized and then fabricat...

Journal: Polyolefins Journal 2018

Gas phase polymerization of propylene was carried out in a semi-batch minireactor using a commercially supported Ziegler–Natta (ZN) catalyst. The influence of variables including monomer partial pressure, external electron donor, reaction temperature and time on the particle morphology and size distribution was investigated. Generally, more uniform fragmentation and particle densities were obta...

Journal: :Hydrogen 2022

An oxygen pump sensor was constructed using yttria-stabilized zirconia, which is an oxide ion conductor, and discharged from steam to generate hydrogen. The consisted of a that discharges controls the partial pressure by having electrodes in two places. Oxygen applying current controlling potential sensor. Hydrogen then generated water vapor. Furthermore, installed second stage, supplied pump, ...

2006
Saptarshi Basu Hang Xu Michael W. Renfro Baki M. Cetegen

A fiber optic coupled diode laser sensor has been constructed for in situ measurements of water vapor partial pressure in active proton-exchange membrane (PEM) fuel cell systems. The bipolar plate of a prototypical PEM fuel cell was modified to allow for transmission of a near infrared laser beam through the flow channels on either the fuel or oxidizer side of its membrane-electrode assembly. T...

Journal: :مهندسی بیوسیستم ایران 0
مجتبی نادری بلداجی دانشگاه شهرکرد علی کاظم زاده دانشگاه شهرکرد عباس همت دانشگاه صنعتی اصفهان سجاد رستمی دانشگاه شهرکرد

in this study, a cylindrical bolling probe was developed and evaluated for measuring stress in soil under tire traffic. the probe consists of a silicon rubber head for sensing the soil stress, a pvc tube for transferring the liquid pressure, a digital pressure sensor and a syringe for filling the probe with water and adjusting the initial inclusion pressure. a tank with pressurized air was used...

Journal: :Sensors and Actuators A-physical 2021

The small silicon chip of Schottky diode (0.8 × 0.8 0.4 mm3) with planar arrangement electrodes (chip PSD) as temperature sensor, which functions under the operating conditions pressure was developed. forward current-voltage I–V characteristic PSD is determined by potential barrier between Mo and n-Si (ND = 3 1015 cm?3). Forward voltage UF 208 ± 6 mV coefficient TC -1.635 0.015 mV/°C (with line...

2012
Shashank Bholane Devendrasingh Thakore

Wireless Sensor Networks (WSNs) consists of numerous small sensors. These sensors are wirelessly connected to each other for performing same task collectively such as monitoring weather conditions or specifically parameters like temperature, pressure, sound and vibrations etc. For all applications partial or full time synchronization is required and the message exchanged by sensor nodes for dat...

2009
Lee Chow Guangyu Chai

Transferable ZnO tetrapods were grown by an aqueous solution method. An individual ZnO tetrapod-based sensor was fabricated by in situ lift-out technique and its ultraviolet (UV) and gas sensing properties were investigated. This single tetrapod-based device responds to the UV light rapidly and showed a recovery time of about 23 s. The sensitivity of a single ZnO tetrapod sensor to oxygen conce...

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