Automatic Meter Reading (AMR) is the remote collection of consumption data from customer’s utility meters over telecommunications, radio, power line and other links. AMR provides water, electric and gas utility service companies the opportunity to streamline metering, billing and collection activities, increase operational efficiency and improve customer service. The AMR system consists of thre...

The development of a portable oxygen concentrator is of prime significance for patients with respiratory problems. This paper presents a portable concentrator prototype design using the pressure/vacuum swing adsorption (PVSA) cycle with a deep evacuation step (-0.82 barg) instead of desorption with purge flow to simplify the oxygen production process. The output of the oxygen concentrator is a ...

The uniformity of the radiation flux profile along the focal line of a linear parabolic concentrator is typically dependent on factors such as the mirror shape accuracy, gaps between mirrors and shading due to receiver supports. For a photovoltaic trough concentrator, small regions of low radiation flux can have a large impact on the entire system performance. Radiation flux profiles have been ...

Table 5 summarizes my current perspective on home oxygen delivery systems in the United States. As I already indicated, scoring for cost and labor may be very different in other countries. As noted, all things considered, today the most reasonable system for home oxygen therapy is the concentrator. Problems with FIO2, liter flow, and portability are clearly overshadowed by cost, labor, ease of ...

A microbiological survey was undertaken on the eight patients in the Liverpool District who have a humidifier attachment on their oxygen concentrator. All but one of the humidifiers were contaminated with potentially pathogenic bacteria.

We present 0.1–10 keV observations of HerX-1 obtained with the Low-Energy Spectrometer Concentrator instrument onboard the BeppoSAX satellite during the main on-state of the 35 day cycle. We confirm the existence of an intense 0.093 keV blackbody component and a broad emission feature at 0.94 keV. The pulse phase dependence of these components is similar, suggesting a common origin. This is mos...

A development aid project to Malawi is described. This involved the development of a suitable anaesthetic machine for use in under-developed countries and the selection of a suitable oxygen concentrator to provide it with air and oxygen. All government hospitals were provided with anaesthetic equipment and personnel were trained to keep it regularly serviced. Follow up testing of reliability wa...