What is the standard classification for the water types using Durov plot?

More Ibraheem Hamdan's questions See All

How to assess monoamine oxidase levels ?

hello everyone i have a research about monoamine oxidase enzyme and i saw a lot of detection method of it including monoamine oxidase activity assay kit but i don't know what is the easiest and...

18 January 2021 3,474 2 View

How can I write a small research article?

I am an undergraduate student of electrical engineering. I want to write an article on any topic related to electrical engineering, environment or both. But I do not know how to write it. I know...

24 December 2020 9,636 4 View

Correlation, Regression and significance?

Dears, I have different variables in multiple regression. Two variables are highly correlated. To solve the collinearity issue, I dropped one of them from the multiple regression model. The...

29 November 2020 2,695 4 View

How to use ELISA in the diagnosis of autoimmune disease ?

i searched more about using ELISA to diagnosis autoimmune disease and what i found is that depends on type of the disease. the target will be an antigen specific for the autoantibodies presence in...

25 October 2020 5,502 3 View

How to perform Subgroup analysis in meta-analysis by using R ?

I am conducting meta-analysis by using R package (metafor), it seems i have a significant heterogeneity, so I need to do sub-group analysis guided by gender (categorical) and age (continuous)...

18 September 2020 918 3 View

How a Solar Shield Disk at L1 Lagrangian Point behaves?

If global warming cannot be resolved by controlling/minimising gas emissions, then extraordinary measures may be the only viable options, one of such ideas is placing a solar shield between the...

02 March 2020 9,557 4 View

Presentation level 70 dB nHL to elicit P300 in CI versus normal hearing children?

In a comparative study between normal hearing and cochlear-implanted children, if we presented tonal odd-ball paradigm via loudspeaker to elicit P300 auditory evoked potential: Is the presentation...

10 January 2020 4,776 1 View

How to Fuse data from Unrelated Sources?

I looking for technique to fusion data from different year & different sample which has a same features but different data into one dataset.

13 January 2019 5,772 3 View

What would be the most important criteria of a Natural Fibre to be chosen as reinforcement agent in a composite for food packaging application?

There are physical, mechanical, chemical and biological, technical and other properties of Natural Fibre. But, just a quick survey, what would be the most high priority to be given...

07 February 2018 8,968 3 View

What is the deference between data analytics and KDD ?

is there any article discuses the correlation and linkage between them ?

04 February 2018 3,869 3 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 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

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

Multinomial probabilities and confidence intervals - obtaining the CI of the reference category?

Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...

22 February 2021 2,541 4 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

22 February 2021 6,569 3 View

How to extract water soluble amino compound from after aqueous work up?

4-Dimethyl amino pyridine is used in reaction.Product formed contains amino group along with amide & is highly water soluble. To remove 4-DMAP aqueous work up done. Please give solution. Thanks.

21 February 2021 1,883 1 View

What are some underexplored theories and concepts in Activated Carbon as A Water Filter?

Hi, me and my team mates are currently planning to pursue the topic of Activated Carbon from Coconut as a Water Filter. And we would like to ask for your suggestions and knowledge on what specific...

21 February 2021 7,561 4 View

Ibraheem Hamdan

Dear Abhishek Raj

Thank you very much

Actually I have many articles related to Durov plot. The location of the internal numbering (from 1-9) will be changed based on which ion you chosed in each corner of the plot.

Because that I'm looking for the original standard classification.

Virendra Kumar Saxena

kindly go through :

D.K.Chadha, 1999, A proposed new diagram for geochemical classification of natural waters and interpretation of chemical data.Hydrogeology Journal 7 : 431-439.