Purpose. Ensuring the optimal mode of gas transportation from local sections main trunkline (GT), subject to repair (maintenance) and/or shutdown, existing based on calculation, determination, and establishment rational values operating modes mobile compressor stations during entire time pumping. Methodology. The studies are physical principles laws that describe effect properties natural geome...

OBJECTIVE To determine the incidence of acute hepatitis because of hepatitis E virus (HEV) and the source of the epidemic in Nellore in south India in 2008. METHODS Anti-HEV IgM ELISA and RT-PCR for HEV-RNA were carried out on blood and stool samples from patients with acute hepatitis presenting to different hospitals in the city. The city was divided into 33 clusters, and 20 families from ea...

Land subsidence is a worldwide problem that is typically caused by human activities, primarily the removal of groundwater. In Western Taiwan, groundwater has been pumped for industrial, residential, agricultural, and aquacultural uses for over 40 years. In this study, a multisensor monitoring system comprising GPS stations, leveling surveys, monitoring wells, and Persistent Scatterer Interferom...

In order to implement an integrated optical quantum circuit, designing waveguides based on the quantum box is of prime importance. To do this we have investigated optical waveguide both with and without optical pumping. The rate of absorption and emission using an array of AlGaAs/GaAs quantum box core/shell structure in the optical waveguide with various pumping intensities has computed. By con...

Abstract The Yellow River diversion project consists of three gates, two pumping stations, and one plain reservoir, with a total river length 17.46 km in the Panzhuang irrigation area, which provides primary water source for Dezhou central city, Shandong Province, China. is subject to constraints sluice diverting time, reservoir combinations stations self-flowing gates. opening closing forms ga...

The investment and operating costs of pumping stations in drinking water distribution networks are some the highest public urban sectors. Generally, these systems designed based on extreme scenarios. However, periods normal operation, extra energy is produced, thereby generating excess costs. To avoid this problem, work presents a new methodology for design stations. proposed technique use setp...

The ongoing research aims to develop an optimal variant of the industrial water supply scheme, selected based on a comparison several possible solutions. It is recommended use block-by-aggregate technical system at stations equipped with any number main units large flow pumps, more than 5 m 3 /s. If there significant amount sediment in stations, settling tanks are needed intake devices systems....

abstract background: the pressure of consumption spots in eater supply systems is one of the most important hydraulic parameters can be used in optimized management of water distribution networks. since the pressure has some different effects on various parameters of the network management including its hydraulic functions, reliability, stability and leakage, its control is of great importance ...

OBJECTIVES Quarantine measure for prevention of epidemic disease and further evaluations of their efficiency are possible only by elaborating analyses of imported cases. The purpose of this study was to analyze descriptive epidemiological characteristics of pandemic influenza A (H1N1) cases imported to Korea. METHODS We collected two sets of data. The first set, comprised daily reported cases...