This paper presents a case study of photovoltaic (PV) system design at Hwangji Youchang facility in Korea, to power an electrical aerator for natural purification of acid mine drainage. The aerator was designed as 13 units with air flow capacity of 60 L/min at the oxidation pond by considering the characteristics of incoming drainage. Site evaluation was conducted to identify a suitable locatio...

Binder drainage test is widely used to set an upper limit to the design binder content of porous asphalt. However, the presence of high amount of fine particles in the drained binder may affect the accuracy of the test result. This paper presents a study to characterize the composition and particle size distribution of fine particles accumulated in the drained binder. Fine aggregates and filler...

Twenty patients with ultrasonographic or computed tomographic diagnosis of pancreatic pseudocyst were referred for endoscopic retrograde cholangiopancreatography (ERCP). Two of these were found at laparotomy not to have pseudocysts and were excluded. Pancreatography was successful in 15 out of 18 cases (83%) and cholangiography in 12 out of 18 cases (67%). Three types of pseudocysts were notice...

A prospective trial has been carried out to determine the value of suction drainage in the operation of meniscectomy. One hundred operations were analysed, in half of which drains had been used. The use of the drain could not be shown to result in any sustained advantages. The demand for analgesics after the operation was reduced but not to a statistically significant level. The size of the ear...

Extracting coal mine methane (CMM) is important for underground mining safety. The tree-type borehole drainage (TTBD) technique can effectively remove from seams. Determining a suitable drilling pattern multiple boreholes will promote the efficient application of this in mines. Aimed at solving problem that optimum extraction layout unclear, study first constructed full-coupled thermo-hydro-mec...

BACKGROUND The present study aimed to explore the relationship between surgical methods, hemorrhage position, hemorrhage volume, surgical timing and treatment outcome of hypertensive intracerebral hemorrhage (HICH). METHODS A total of 1 310 patients, who had been admitted to six hospitals from January 2004 to January 2008, were divided into six groups according to different surgical methods: ...

This paper concentrates on the flow properties when one fluid displaces another fluid in a two-dimensional (2D) network of pores and throats. We consider the scale where individual pores enter the description and we use a network model to simulate the displacement process. We study the interplay between the pressure build up in the fluids and the displacement structure in drainage. We find that...

one of the effective tools for identifying land resources and assign them to the best and most profitable forms of land productivity, susceptibility of agro-ecological zoning . in this study agro-ecological zoning of satellite imagery and gis were used. after agro-climatic zoning (based on isorain, isothermal and length of growing period maps) and agro-edaphic zoning (based on soil, slope and l...

Sand coverings account for a large part of the cost of a project. The purpose of this study is to evaluate the performance of different coatings for filtration of underground drains and reduce the cost of cornfield farms. The experiments were carried out in farm in Salman Farsi. The subsoil drainage was fitted to each test piece with a length of 120 meters, a diameter of 100 mm, and a distance ...