A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical... | Contact experts in Water to get answers
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Questions related to Water
I read in a paper that says: Dating ancient water technologies often difficult and published ages are often imprecise. Why it is difficult to date?
06 June 2019 3,346 11 View
What classical examples in the literature of contamination by agrochemical, herbicide, fungicide, insecticide and pesticide residues in groundwater in agriculture?
06 June 2019 1,152 27 View
What is basic concept of aquifer system?
06 June 2019 8,527 19 View
The location is in Basra city center on Shatt Al-Arab river.
06 June 2019 6,770 2 View
I am searching a best method to measure water surface level in a experimental flume(channel) with some obstacles which is located in the centerline of it.
30 May 2019 9,235 6 View
05 May 2019 6,113 7 View
How I can convert 0.04 μmol Ni in the form of NiCl2 to mg or g???
05 May 2019 3,188 1 View
Does anyone know how I can prevent a lake to be green? I think this is because of phytoplankton growing in water. This lake has some birds which drink from it and the answer must do not damage the...
05 May 2019 4,089 7 View
Modelos para estudo do comportamento/percolação de lixiviado ou necrochorume no solo.
05 May 2019 3,076 3 View
Hello All, Which methodology should I follow to measure water activity of pharmaceutical materials? I am aware that there are two USP procedures in this regard, chapter 922 and 1112. Which of...
05 May 2019 4,257 5 View
can we use potash soap,butylstearate,petroleum waxes as a waterproofing material?suggest advanced,latest,commonly used waterproofing material available in market?
05 May 2019 4,501 2 View
We have got lithological data - depths of clay, sand, gravel and others in meters. How to find out the groundwater table based on this? Well, we have screen positions as well. Does it help?
05 May 2019 2,892 6 View
I want to diluted water sample. The sample volume(10 ml), the reading give me out of range( the range 30 mg/l). amount of Nitrate I have more than 30 mg/L. How i can dilute the water sample to get...
05 May 2019 4,518 13 View
05 May 2019 9,376 12 View
How to measure discharge of a canal by surface float method? If we know flow depth, top and bottom width of canal. And canal is lined with cement concrete. What should be size, weight and...
27 April 2019 706 9 View
Something on LEAP would be much appreciated.
22 April 2019 9,762 7 View
04 April 2019 4,036 8 View
How to find the hazard ratio (or hazard quotient) in aquatic environment due to several chemicals (in case we know the concentrations). How is the meaningfulness of simple addition of each of them?
04 April 2019 5,947 2 View
Biochemical oxygen demand (BOD) is a chemical process for determining the amount of dissolved oxygen required for aerobic biological organisms in a body of water to break down (disintegrate)...
04 April 2019 9,641 64 View
At room conditions, and in absence of any electric field, the dissociation constant of water is Keq= 10-14 mol2 L-2. What means that, statistically, [H+] = [OH-] = 10-7 mol L-1. I have found...
04 April 2019 963 3 View
I'm trying to figure out the saturation concentration of H2 gas into water which has been presurised at 50 bar (and heated at 70 degrees C). I can't seem to find any relevant source of information...
03 March 2019 4,932 2 View
It's a major problem in developing and underdeveloped countries
03 March 2019 3,101 28 View
We have resolved a structure of epimerase that catalyzes the epimerization of β-methyl-indolepyruvate. A Histidine has been identified as a proton acceptor and the indole ring of substrate makes...
03 March 2019 6,004 3 View
I looking for simple methods or equation for calculation evaporation rate from open tank in aquaculture /aquaponics???
03 March 2019 1,244 1 View