Cheruvanky A, Zhou H, Pisitkun T, Kopp JB, Knepper MA, Yuen PST, Star RA. Rapid isolation of urinary exosomal biomarkers using a nanomembrane ultrafiltration concentrator. Am J Physiol Renal Physiol 292: F1657–F1661, 2007. First published January 16, 2007; doi:10.1152/ajprenal.00434.2006.—Urinary exosomes are excreted from all nephron segments and may serve as biomarkers for classifying renal d...

There is little data about the use of different oxygen sources during assessment for long-term oxygen therapy (LTOT) and how this impacts upon blood oxygen tensions and prescribed flow rates. Patients with chronic obstructive pulmonary disease (COPD), n=30, had assessments for LTOT using both an oxygen-concentrator and piped hospital oxygen (wall-oxygen) as supply sources. In addition, a random...

Portable battery-driven oxygen concentrators provide an alternative to the use of oxygen cylinders for treatment of hypoxemia during field anesthesia. The aim of this study was to evaluate the use of the EverGo Portable Oxygen Concentrator (Respironics, Murrysville, Pennsylvania 15668, USA) with pulse-dose delivery for improvement of arterial oxygenation during anesthesia of wildlife. This conc...

In this paper we characterize the features of good packet routing schemes for input queued sparse crossbar based packet concentrators and propose a polling based routing algorithm which achieves near optimal performance. It has been shown by the authors of this paper that the performance of an input queued packet concentrator with different input and output packet rates can be modeled by a GI/D...

An increasing number of patients, mainly COPD and overlap-syndrome patients, simultaneously use home oxygen therapy and noninvasive ventilation (NIV) at night. Usually the oxygen source is a stationary concentrator. We report a patient who, without a medical recommendation, was using a portable oxygen concentrator during nocturnal NIV. In the laboratory, with the patient, we tested the portabl...

Concentrator solar cells have been proposed as an interesting way of reducing the cost of photovoltaic electricity. However, in order to compete with conventional solar modules it is necessary not only to reduce costs but also to evaluate and increase the present reliability. Concentrator solar cells work at higher temperature, solar radiation and current stress than conventional solar cells an...

ISSN: 0267-8292 (Print) 1366-5855 (Online) Journal homepage: http://www.tandfonline.com/loi/tlct20 Dye-integrated cholesteric photonic luminescent solar concentrator Andrea L. Rodarte, Fredy Cisneros, Linda S. Hirst & Sayantani Ghosh To cite this article: Andrea L. Rodarte, Fredy Cisneros, Linda S. Hirst & Sayantani Ghosh (2014) Dye-integrated cholesteric photonic luminescent solar concentrator...

This work focuses on the modelling and simulation of a solar concentrator cooker. The equations governing heat transfers cooker are discretised by an implicit finite difference method solved via Gaussian algorithm, coupled with iterative procedure.
 FORTRAN numerical code that simulates operation cooker, using meteorological data from city Bangui, was developed. In this simulation, influen...

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...

An oxygen concentrator based on a zeolitic molecular sieve has been used to supply piped oxygen in a District General Hospital; such oxygen contains 5% argon. If concentrator oxygen is used in the closed circuit, argon accumulates. The present investigation defines the extent and time course of argon accumulation in partially and fully closed breathing systems. A theoretical model is presented ...