10 October 2013 1 5K Report

In many practical cases, one affects arbitrarily a constant value for Chezy’s coefficient. It is a physically unjustified approach, because Chezy’s coefficient varies with flow parameters.

More Bachir Achour's questions See All
Your help will be highly appreciated for solving the problem in the attached file ?

This is to determine the inverse of a Laplace transform

06 July 2016 3,543 0 View

What is the difference between nanofiltration and reverse osmosis membranes?

Difference between Nanofitration membrane and reverse osmosis membrane

06 July 2016 6,737 3 View

What are the causes of climate changes?

In the history of the Earth, climates have evolved depending on natural phenomena more or less cyclical. What do you think ?

06 July 2016 817 7 View

Does Life exist in polluted water?

Pollution of an aquatic system is characterized by the change in the initial population structure

06 July 2016 10,160 5 View

What are the "ecological disaster" caused by man?

These are triggered abruptly imbalances in the natural environment, large-scale, with serious consequences in the short and long term on the environment.

06 July 2016 8,389 6 View

Is the drinking water (Tap) more ecological than mineral water?

Comparing drinking water to mineral water is not a new idea, but so far there have been few studies to directly compare drinking water and mineral water by taking into account all factors primary...

06 July 2016 8,631 26 View

The current desert areas, have they always been?

Can we make a connection with climate change?

06 July 2016 7,845 3 View

What is the most appropriate disinfection process to inactivate or destroy pathogenic microorganisms in water systems?

What is the most appropriate disinfection process to inactivate or destroy pathogenic microorganisms in water systems? Is this based on need 

06 July 2016 3,586 4 View

How long can we keep spring water at room temperature without any danger?

Lifetime of spring water

06 July 2016 8,378 6 View

Is life possible without water?

there are life forms slowed and dried such as seeds or spores.

06 July 2016 4,341 3 View

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