How can I increase water repellency of soil aggregates?

More Ebrahim Sangsefidi's questions See All

I was wondering if anybody can help me with interpreting the permanent deformation behaviour of Unbound Granular Materials?

I compacted unbound aggregates at optimum moisture content and then let it dry in the oven for one day. The repeated load triaxial test was carried out on this sample in which I faced a weird...

07 August 2019 3,311 9 View

How can I find an specific equation that can describe the relationship between X and Y in the attached file?

Given the presented scatter-plot, it is looking like that there is a relationship between X and Y in my data. Unfortunately, the simple nonlinear curves can not describe this relationship....

01 February 2019 7,076 32 View

Can anybody help me with obtaining the curvature of a function?

I have a function as follows: y= a*x^b a=7e-5 b=-0.755 I attached a simple graph of the function. As it is apparent from the graph the CURVATURE of the function increases from ZERO to a finite...

01 February 2019 7,703 8 View

Can anybody help me with my XRD test results?

I have andesite source of road aggregates. I did XRD test on bulk powder and oriented samples ((1) air dried, (2) treated with ethylene glycol at 60oC, and (3) heat-treated at 550 oC for 45...

11 December 2018 6,211 3 View

Does anybody has any idea about the equation of the compaction curve of granular materials and how the Optimum Moisture Content can be calculated?

I mean after doing the compaction practice in various water contents and determining the dry density corresponding to each water content, what would be the equation of the resultant compaction...

10 November 2018 7,199 11 View

Can you please help me with the correction of my CBR curve (Load- Penetration Curve)?

I conducted CBR tests on unbounded aggregates. As you can see the CBR test results in the attachment, the curves concave up and there is a relatively enormous shift between two test results....

10 November 2018 1,292 7 View

Can anybody help me with a data prediction?

I have a sort of data in which the change in the weight of materials is recorded during the time. Unfortunately because of special condition I cannot record the weight in the first 75 seconds. -...

09 October 2018 2,479 13 View

Any advice how can I determine the proportion of Yellow-ish and Brown-ish color in a color photo?

A solution in MATLAB Software is preferred.

09 October 2018 7,916 5 View

How can I recognize the weathering of the glass phase in my materials?

Could you please find the attached image and let me know if the presented data can show any weathering in the glass. Based on my understanding, the glass in the structure of my materials remained...

09 October 2018 7,981 1 View

How can I plot 95% confidence interval for a nonlinear regression line?

SPSS software is preferable :)

08 September 2018 2,083 5 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Arvind Singh

Please have a look at these useful links.

http://link.springer.com/article/10.1134/S1064229315070054

https://www.degruyter.com/view/j/johh.2016.64.issue-2/johh-2016-0025/johh-2016-0025.xml

Manoj Kumar Dabi

A few drops of 0.1 N NaOH in a liter of suspension would do that perfectly. Avoid it if the soil is OM rich and you wish to keep it intact.

Moiseev K. G.

Hi! This is Alumonickelsilicate sodium, the League Natriumoleat 90, Polyhydroxyalkane, zinc stearate, calcium stearate, sodium Ethylsilicate, sodium Methylsiliconate. And it is the simples of additives such as biochar.

All the best