255: The Outcome of Out-of-Hospital Cardiopulmonary Arrest in the Over 85-Year-Old Japanese Population Taken to the Emergency Department

Umezawa, Kazuo; Branch, Joel; Yamagami, Hiroshi; Ofuchi, Hisashi; Ohta, Bon; Uchida, Yuzo; Kuwabara, Hiroto

doi:10.1016/j.annemergmed.2009.06.285

Cited by 1 publication

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“…During all our temperature experiment, According to the United States Department of Defense temperature test method standards [22], the rate of temperature rise was controlled at about 2 °C/min, and the temperature rise from 25 °C to 175 °C, then maintain 1 h. When temperature rising at 200 °C, it had been kept for 4 h. The total experimental time is about 8.6 h. The specific test performance indices and experimental data are shown below.…”

Section: Experimental and Resultsmentioning

confidence: 99%

A Digital Lock-In Amplifier for Use at Temperatures of up to 200 °C

Cheng

et al. 2016

Sensors

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Weak voltage signals cannot be reliably measured using currently available logging tools when these tools are subject to high-temperature (up to 200 °C) environments for prolonged periods. In this paper, we present a digital lock-in amplifier (DLIA) capable of operating at temperatures of up to 200 °C. The DLIA contains a low-noise instrument amplifier and signal acquisition and the corresponding signal processing electronics. The high-temperature stability of the DLIA is achieved by designing system-in-package (SiP) and multi-chip module (MCM) components with low thermal resistances. An effective look-up-table (LUT) method was developed for the lock-in amplifier algorithm, to decrease the complexity of the calculations and generate less heat than the traditional way. The performance of the design was tested by determining the linearity, gain, Q value, and frequency characteristic of the DLIA between 25 and 200 °C. The maximal nonlinear error in the linearity of the DLIA working at 200 °C was about 1.736% when the equivalent input was a sine wave signal with an amplitude of between 94.8 and 1896.0 nV and a frequency of 800 kHz. The tests showed that the DLIA proposed could work effectively in high-temperature environments up to 200 °C.

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Section: Experimental and Resultsmentioning

confidence: 99%

A Digital Lock-In Amplifier for Use at Temperatures of up to 200 °C

Cheng

et al. 2016

Sensors

View full text Add to dashboard Cite

show abstract

255: The Outcome of Out-of-Hospital Cardiopulmonary Arrest in the Over 85-Year-Old Japanese Population Taken to the Emergency Department

Cited by 1 publication

References 0 publications

A Digital Lock-In Amplifier for Use at Temperatures of up to 200 °C

A Digital Lock-In Amplifier for Use at Temperatures of up to 200 °C

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