How can I create a Doneen plot of the permeability index against the total ion concentration?

More Youcef Guefassa's questions See All

What are the Methods of Albert Chaboche in fatigue of metals?

Albert Chaboche is a renowned French engineer and scientist known for his significant contributions to the field of material modeling, specifically in the context of fatigue and damage in metals....

25 January 2024 2,512 1 View

How long will international silence remain over the massacres against civilians in Gaza?

What is the role of Chapters Six and Seven of the United Nations Charter regarding human rights violations in Gaza?! Aren't the war crimes committed against civilians in Gaza a threat to...

01 November 2023 427 0 View

How to open a file '.mat' in OPAL-RT?

I whould like to know how to load a file '.mat' in OPAL-RT for a real time simulation. Thanks

28 August 2023 3,879 0 View

Using NetpathXL to calculate 14C age with Ham and Plummer adjustment model (2013)?

Dear colleagues I need to calculate the age of 14C groundwater using Ham and Plummer adjustment model (2013) So, I’m looking for some software, even Matlab code or Excel sheet, that I can use for...

30 May 2023 8,342 0 View

Chikhaoui, M., 1974. Les Ignimbrites et les roches basiques du Précambrien supérieur des Monts d’Ougarta (Saoura).Thèse de 3ème Cycle, , Université, ?

Bonjour, je suis doctorant je travaille sur la région de la Saoura, j'aimerai bien avoir la thèse de Chikhaoui? Merci.

28 May 2023 8,214 0 View

Which pore forms are better in the material to improve its thermal insulation?

It is known that pores directly and significantly affect the thermal insulation of materials ,these pores are different shapes, and of necessity, this difference in their shapes affects the...

23 May 2023 7,922 2 View

How i simulate a Solar Chimney Power Plan in Comsol ?

I tried to simulate a Solar Chimney Power Plant (SCPP). I have two exemples , one with laminar flow and the other with turbulent flow, but they both work with Comsol 4.2. However, when I try to...

21 February 2023 649 0 View

How i choose an appropriate fluids to simulation a Solar Chimney Power Plant in Comsol ?

Hello everyone, hope you're doing well. I'm trying to simulate a Solar Chimney Power Plant in Comsol, and I'm a beginner in Comsol. If you can anyone send me an example to simulation of Solar...

14 February 2023 4,651 2 View

How is the relation between density and specific heat?

It is known that the relation between material density and its thermal conductivity is a Positive relation, is the relation between density and specific heat, regular?

06 January 2023 6,428 3 View

How implement fuzzy logic controler in Matlab function ?

I used the mamfis but had the folowing error The 'mamfis' class does not support code generation.

12 December 2022 6,644 2 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

How to Add Missing Water Molecules in Protein-Membrane Simulations?

I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...

04 August 2024 1,200 2 View

What is meant by baseline of FTIR data?

I got comment on my FTIR data figure from a reviewer. The reviewer said "FTIR data in Figure should be repeated. there is no bassline." I made Y off set comparison graph of FTIR on OriginLab. Can...

03 August 2024 6,070 3 View

In the presence of VERY high concentration (1000 ppm) of silicon, the adsorption isotherms of arsenic are showing anomalous trends, why so?

I conducted an adsorption experiment of arsenic on soil in the presence of different doses of silicon as competing ions to see the effect of silicon on arsenic adsorption and desorption. I took 5...

03 August 2024 6,500 3 View

Anton Vrdoljak

https://www.researchgate.net/post/Hello_everyone_How_can_i_create_Doneens_diagram_for_classification_of_groundwater_quality_for_irrigation_what_is_the_program_that_can_i_use2

Mohamed-Mourad Lafifi

Hi,

I suggest you see the links on the topic.

https://www.researchgate.net/publication/344709972_Irrigation_and_Drinking_Groundwater_Quality_Indices_of_Gada_Community_and_Environs_Semi-_Arid_Region_Sokoto_Basin_Northwestern_Nigeria/figures?lo=1

https://www.mdpi.com/2073-4441/13/17/2428/htm

https://assets.researchsquare.com/files/rs-725167/v1/459d8f86-e45e-4d77-b297-bbddda2b4e52.pdf?c=1637051392

https://pdfs.semanticscholar.org/ccdc/e50db1d56d3840ab78f387b5d085275059ec.pdf

Best regards