Is there any analytical study regarding the self-vibration control property of composites?

Composite plates, when vibrating, stops vibration after sometime. Is there any study available where the self-vibration property has been discussed.

25 October 2017 5,176 2 View

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The real world data (e.g.environmental, geochemical studies), sometimes, do not follow a normal distribution. The data are found to be skewed and statistical analyses yield untrue results. The...

25 October 2017 7,054 19 View

Factor analysis and principal component analysis?

In statistics, what's the basic difference between factor analysis and principal component analysis?

30 July 2017 4,711 8 View

Elevated concentration of iron (Fe) in groundwater?

Occurrence of high concentration of iron (Fe) in groundwater is very common particularly in areas of tropical climate. In groundwater, Fe generally occurs in the oxidation state - reduced soluble...

27 October 2016 4,134 27 View

Can anyone help me to find out the suitable Questionnaire/scale for measuring Delinquent behavior in juvenile adolescents?

16 October 2015 6,692 3 View

How to prevent the corrosion of steels balls in a corrosive aqueous medium ?

Pigments are predispersed in resins to produce predispersed pigments , and it could be done in an aqueous medium in a ball mill using steel balls , However the balls need to be protected from...

01 January 1970 5,056 9 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

For acid treated montmorillonite clays what will be the result of surface area?

The organo montmorillonite nanoclays modified with octadecylamine were used for the experiment. After acid treatment, the surface area will be increase. However, in my experiment, the surface area...

10 February 2021 1,581 3 View

Stats to compare recharge of groundwater and determine if precipitation has more of an effect on groundwater levels before or after resto??

Hello all, I am looking for ways to compare recharge of groundwater and determine if precipitation has more of an effect on groundwater levels before or after restoration? My data set contains a...

08 February 2021 7,887 5 View

What could be the reason for XRD pattern starting from very high counts/intensity at 3 degree 2 theta?

I am working on XRD analysis of the clay minerals from the sea sediments. My XRD pattern shows very high counts at the start of the XRD pattern (3 degree 2 theta) which is very unusual. The counts...

31 January 2021 4,493 9 View

Separation of CaO from Al2O3 and SiO2 in a solid waste, does HCl work?

I have an alkaline solid waste which contains the following components: SiO2, Al2O3, and CaO according to the XRF analysis (as it gives the results as oxides). However, I know from the XRD that it...

28 January 2021 9,469 3 View

What is the best geophysical machine or device for detecting groundwater?

what is the best geophysical machine or device for detecting groundwater? Are there any machine that can detect the depth and the type of water? do I have to buy one machine or more than one to...

26 January 2021 6,149 15 View

Is it possible to prepare clay minerals by mixing pure oxides of required elements? What would be theoretical difficulties with it?

Practically this is not at all necessary. But theoretically, would hydrous/hydrothermal synthesis be enough (like mix 1 mole alumina gel and 4 mole silica gel and gently heat) or would it require...

26 January 2021 6,403 3 View

How does a pH 13 buffer solution containing NaOH/KCl work?

pH 13 Buffer solution is prepared from a strong base sodium hydroxide and potassium chloride salt. However a buffer contain a weak base or weak acid with their salts. What is the purpose of the...

26 January 2021 9,154 1 View

Is there any low-cost filtering system (or other tech.)to lower the salt conc. (salinity) of surface/groundwater for large scale agricultural system??

The available water (surface and groundwater) is highly saline (6-20 dS/m). It is required to produce crop (moderately saline tolerant, up to 6 dS/m). Is there any low-cost filtering system (or...

18 January 2021 5,015 3 View

What is the difference between soluble ions and exchangeable cations? And How to determine each of them?

I used percolation columns to reclamation saline-sodic clay soils . And my question is, What is the difference between soluble ions and exchangeable cations?

18 January 2021 6,868 3 View