نتایج جستجو برای: oxygen sensor

تعداد نتایج: 394025  

Journal: :Chemical communications 2014
Yu-Mo Zhang Xiaojun Wang Wen Li Weiran Zhang Minjie Li Sean Xiao-An Zhang

Inspired by the enol-degradation of luciferin, a new oxygen sensor with oppositely changed color and fluorescence has been designed. This new reaction-based dual mode sensor can not only be used as a highly selective instant "fluorescence on" oxygen probe, but also as a freshness indicator of food or food materials by using its property of time-adjustable color fading.

Journal: :Chemical communications 2009
Xavier Ragàs Ana Jiménez-Banzo David Sánchez-García Xavier Batllori Santi Nonell

The fluorescent probe Singlet Oxygen Sensor Green is able to produce singlet oxygen under exposure to UV or visible radiation.

Journal: :Advanced materials 2013
Simiao Niu Youfan Hu Xiaonan Wen Yusheng Zhou Fang Zhang Long Lin Sihong Wang Zhong Lin Wang

A flexible oxygen sensor based on individual ZnO nanowires is demonstrated with high sensitivity at room temperature and the influence of the piezotronic effect on the performance of this oxygen sensor is investigated. By applying a tensile strain, the already very high sensitivity due to the Schottky contact and pre-treatment of UV light is even further enhanced.

Journal: :Heart & lung : the journal of critical care 2016
Marilyn Schallom Donna Prentice Carrie Sona Cassandra Arroyo John Mazuski

BACKGROUND In critically ill patients, clinicians can have difficulty obtaining accurate oximetry measurements. OBJECTIVE To compare the accuracy of nasal alar and forehead sensor measurements and incidence of pressure injury. METHODS 43 patients had forehead and nasal alar sensors applied. Arterial samples were obtained at 0, 24, and 120 hours. Oxygen saturations measured by co-oximetry we...

Journal: :Journal of medical engineering & technology 2005
C-C Wu G-B Lee M-H Chen C-H Luo

Although the indirect calorimeter is a useful tool, its size and expense mean that it is seldom used in hospitals. Furthermore, its flow-through measurement technique dilutes respiratory variations, so they can only be detected with some form of high-precision instrumentation. This study employs MEMS techniques to develop an oxygen sensor as one part of a microscopic energy consumption measurem...

2018
Koichi Suematsu Nan Ma Ken Watanabe Masayoshi Yuasa Tetsuya Kida Kengo Shimanoe

To investigate the effect of aging at 580 °C in wet air (humid aging) on the oxygen adsorption on the surface of SnO₂ particles, the electric properties and the sensor response to hydrogen in dry and humid atmospheres for SnO₂ resistive-type gas sensors were evaluated. The electric resistance in dry and wet atmospheres at 350 °C was strongly increased by humid aging. From the results of oxygen ...

Journal: :Annual review of physiology 1989
C Bauer A Kurtz

More than 30 years ago the kidney in adult mammals was found to be an essential component of a regulatory feedback loop that controls the number of red blood cells and thereby the oxygen capacity of the blood. The kidney releases a hormone, erythropoietin, that stimulates erythrocyte formation in the bone marrow (26). The rate of release of erythropoietin from the kidney is greatly enhanced by ...

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