Dear All researchers,
How much grams of Humic acid (crystallite powder) is required to prepared 2 mg/L in DI?
Best regards
Alaa El Din
# Food industry. Food industrial water contains small concentration of ethanol related to the water content. Is there a technique or procedure to separate or extract ethanol without using membrane...
03 April 2019 8,326 16 View
There are different books related to publish in high ranking journals, avoid plagiarism and how to paraphrase the cited sentences. Therefore, I need your help to suggest a name! Best regards Alaa...
04 May 2017 5,311 8 View
It is supposed that we got graphene. However, we have two peaks inverted in near 300 and 200 nm.
07 August 2016 7,219 10 View
Please, I need any suggestions
07 August 2016 7,048 3 View
As you know, we can get this value from XPS AND it will be the practical value. However, the calculation of the theoretical one can be done by which equations!!
06 July 2016 6,278 8 View
I tried with plastic and glass cuvette and I have the same fluctuations. The sample is plant extract + DW. Regards
05 June 2016 2,469 6 View
There are a lot of different GO types in Sigma-Aldrich. Which criteria should one take into account?
04 May 2016 404 4 View
I need to get overview and the practical protocols for the available oxidation methods to get Graphene Oxide from Graphite.
03 April 2016 4,526 7 View
In Raman Spectra of Carbon materials. We have always D, G and 2D bands. What are the meaning and the scientifc theory to interpret the Raman Spectra?
03 April 2016 7,639 0 View
Increasing ionic strength of a nanoparticle solution that leads to a reduction of the zeta potential.
31 December 2015 3,976 3 View
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
Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
Palmitic acid presence in aqueous fraction
05 August 2024 8,624 4 View
I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?
02 August 2024 7,186 6 View
How do I calculate the stock solution to apply 100 uM MeJA for 1000 ml of plant nutrient medium ?
01 August 2024 723 0 View
I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...
30 July 2024 6,420 1 View
Dear Siesta Users, I installed Siesta 5.0.1 and I want to use Grimme's D3 correction. According to the 5.0.1 manual, I could use a few parameters to include the D3 correction in the...
27 July 2024 5,748 0 View
It has been long known that EDC carbodiimide and NHS easter's half life agains hydrolysis are highly related to pH. However, very surprisingly, not yet found a paper giving a table/chart of their...
25 July 2024 8,738 0 View
I run mechanochemical reactions that involves the use of a large amount of catalyst (1:1 molar ratio to the reactant). When I try to understand the effect of amount of catalyst on the reaction, I...
23 July 2024 9,938 1 View
I would like to know the role of the TFA (trifluoroacetic acid) used on reverse phase chromatography c-18 column. It's is often used with a concentration of 0.1% on the mobile phase.
23 July 2024 8,075 3 View