What is the relationship between soil pH and adding alkali-activator?

Dear all, I do research on a kind of clay and use NaOH as an alkali-activator for stabilization. The pH 2,4,6 mol. of NaOH solution are 12.9,13, and 13.1, respectively. The pH of natural soil is...

09 October 2019 3,813 2 View

What software do you recommend for plagiarism checking?

Dear all, What software do you recommend for plagiarism checking of technical papers? Regards MJM

09 October 2018 613 13 View

Why Acid treatment is done for biomass ashes activation?

Dear All, We know that acid treatment usually done for biomass ash (like Rice husk ash) activation. According to the some researches acid treatment (by some acids like HCL) increases specific...

08 September 2018 7,251 0 View

How long does it take to publish a paper?

Dear all, Does anyone know an address that shows How long does it take to publish a paper?? However, there are some in Elsevier ( https://journalfinder.elsevier.com ) and Springer ( Springer...

06 July 2018 4,577 18 View

What is the best temperature for producing ashes??

Hi everyone, I want to know what is the best temperature and duration for producing ash from agricultural waste?? regarding that I want to use it as Alkali activator for clay stabilization....

10 November 2017 6,507 4 View

Which dissolved ash has the most pH??

Dear all, As it is known, the pH of distilled water increase with dissolving ashes in it. It is because of some metallic oxides contents like NaO, k2O, etc, of the ashes. So, I want to know which...

10 November 2017 1,183 6 View

What is the best technique for lowering the concrete temperature in hot weather??

Hi everyone, We have to pour concrete in temperature of about 40 degree Celsius. does anyone have good technique for lowering the temperature of concrete?? We lower the temperature to near 32...

06 July 2017 9,592 3 View

What is the best technique for perimeter building waterproofing and drainage?

06 July 2017 6,352 4 View

XPS technique for introducing bonds between stabilized clay?

Hi every one I want to know if XPS (X-ray photoelectron spectroscopy ) can be used to introducing bonds between chemically stabilized clay?? Regards

01 February 2017 1,350 4 View

Reinforced Wall for fine soils?

What is the most effective way to Reinforced fine soils like clay ? for example could strip reinforcement used for fine soils??? As reinforced walls should be backfilled with coarse materials like...

08 September 2016 5,409 4 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

How to classify strictly upper triangular matrices by similarity?

Let F be a field. Consider U, the set of n times n strictly upper triangular matrices in F. For X, Y in U, we call them similar if there exists some S, which is non-degenerate and upper...

01 March 2021 2,957 8 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

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 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

How can I generate random samples from Bingham distribution in R? How can I construct those symmetric matrices?

in the function rbingham(n,A) in R software how can I construct that A (symmetric) matrix?

24 February 2021 3,528 3 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 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