Hydraulic conveyance of snow by pipe line.

Conveyance of Contagion by Flies

An Anglo-Indian, asked to mention the principal annoyances attending every-day life in this country, would probably catalogue heat, musquitoes, sparrows, and various kinds of winged insects, not forgetting the irrepressible house fly?a dipteron which, whether acting under dense ignorance of danger, or whether influenced by pure impudence, does not hesitate to explore, even at the risk of destru...

Effect of conveyance pipe dimension and orientation on mosquito oviposition in a simulated stormwater management device.

Simulated stormwater management devices baited with alfalfa infusion were constructed to test conveyance pipe dimension and orientation as a potential deterrent to mosquito oviposition. Various configurations of pipe diameter, length, and orientation were evaluated based on egg raft counts. Field trials tested pipes of 1.3-, 5-, and 10-cm diam and 0-, 90-, or 270-cm lengths, in both horizontal ...

Numerical Study of a Pipe Extension Effect in Draft Tube on Hydraulic Turbine Performance

Draft tube of Francis type hydraulic turbine usually consists of: cone, elbow and diffuser. On the contrary, in some power stations an extra pipe should be added to the draft tube at the bottom of cone because of installation limitation. In this paper, this special case has been numerically studied. To this end CFD analysis was applied to simulate all parts of hydraulic turbine. A homogeneous m...

Uncertainty Reduction of Metering System in Kharg Island Oil Terminal by Adjusting Pipe Line Volume Flow rate

The thermal evaluation of snow line and identification of potential areas of snow falling in the Alborz Mountains with NOAA-AVHRR images

Abstract The extention of Snow cover and its spatial and temporal changes considered as a basic parameter in climatic and hydrologic studies. Data from satellite images due to the low cost and the large extention of cover are, effectively help the identifying of the snowy basins. Since the satellites are able to imaging a surface at different times, this will allow snow survey studies to inves...