منابع مشابه
An inexpensive light-scattering particle monitor: field validation.
We have developed a small, light, passive, inexpensive, datalogging particle monitor called the "UCB" (University of California Berkeley particle monitor). Following previously published laboratory assessments, we present here results of tests of its performance in field settings at high particle concentrations. We demonstrate the mass sensitivity of the UCB in relation to gravimetric filter-ba...
متن کاملAn inexpensive dual-chamber particle monitor: laboratory characterization.
In developing countries, high levels of particle pollution from the use of coal and biomass fuels for household cooking and heating are a major cause of ill health and premature mortality. The cost and complexity of existing monitoring equipment, combined with the need to sample many locations, make routine quantification of household particle pollution levels difficult. Recent advances in tech...
متن کاملAn inexpensive particle monitor for smoker behaviour modification in homes.
OBJECTIVE To compare the response of a new particle counting instrument (Dylos DC1700) with that produced by a device (TSI Sidepak Personal Aerosol Monitor AM510) commonly used to measure PM2.5 in settings where secondhand smoke (SHS) is encountered. METHODS Controlled chamber experiments with different SHS concentrations were generated by burning a cigarette for varying time periods and runn...
متن کاملPulse Monitor in Ocular Surgery.
REED AND MCCAUGHEY (1962) have recentfy drawn attention to the bradycardia which often follows traction on the external ocular muscles during strabismus surgery. This slowing of the heart rate which may be very marked is transient and therefore not usually noticed by the surgeon or anaesthetist unless instrumental aid is employed. Very occasionally, in susceptible individuals, a short period of...
متن کاملAn inexpensive blackbody model
A blackbody is a fundamental concept in thermography. A perfect model of blackbody is characterized by emissivity =1 which is difficult to be obtained. There are black body simulators which are being used for calibration of infrared devices. Commercial solutions of blackbody simulators are based on mathematical models of cavity or surface blackbodies and their emissivity is closer to unity e.g....
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1970
ISSN: 0007-0912
DOI: 10.1093/bja/42.1.81