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

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

To date, according to health authorities, 30% of the population's diseases are initiated by drinking water pollution. Do you know this problem?

The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...

23 February 2021 912 5 View

How much costs direct reduction of nitrogen on farmland in terms of lower crop yield?

Dear research fellows, I wonder if someone knows how much direct reduction of nitrogen on farmland costs in terms of lower crop yield expressed as EUR/kg nitrogen (or similar)? I understand that...

15 February 2021 1,323 3 View

Are there alternatives to the Devarda alloy when estimating nitrogen?

Are there alternatives to the Devarda alloy when estimating nitrogen? devarda alloy is reducing the nitrate to ammonium

15 February 2021 8,838 3 View

What can be use to mop up heavy metals from vegetables or soils in quarry mining site?

It has been established that quarry mining site polluted and contaminated it's environment with heavy metals, these affects the crops and vegetables planted in the area. The possible solutions to...

12 February 2021 1,155 5 View

Resume Book UEP2013 Asian Edition, dis somebodey has it?

I am looking for a copy of the resume book of UEP2013 Asian Edition (Urban Environmental Pollution 2013 Asian Edition) held in Beijing. If somebody has it, please I would like to obtain an...

11 February 2021 2,247 2 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