Can I use acetic acid with an ELITE WAX Perkin Elmer column for Gas Chromatography?

Hi! I would want to know if I can use acetic acid with an ELITE WAX Perkin Elmer column for Gas Chromatography. This column has a polyethylene glycol phase, but I can't find the manual to check...

22 February 2021 730 2 View

In order to simulate a DWC in steady state, how to put the unit operations in the flowsheet of any process simulator?

14 January 2021 3,938 6 View

Which is the best bibliography to search for experimental data of process engineering?

16 December 2020 7,894 2 View

How to set Decouplers in control systems?

09 December 2020 1,409 5 View

Is there a MRI/DTI public database from epileptic patients?

I am looking for DTI/MRI data from epileptic patients for a MSc thesis. Regards

19 November 2020 5,435 3 View

How to built a simulation of a chemical process?

12 September 2020 7,685 10 View

How to recode a short essay style question so that I can use it in SPSS?

Hi everyone, I am conducting an experiment for my dissertation. The manipulation I used consisted in asking people to recall and write down a particular episode in which they felt they had or had...

26 July 2020 6,540 1 View

Is it wrong to measure the mediating variable after the independent variable?

I am conducting an experiment for my dissertation. I want to put the mediator after the independent variable, in the survey flow. However, my supervisor told me that it is wrong to do so. The...

19 July 2020 5,883 5 View

Can the temperature/oxidation state alter the lifetime of an electronic transition?

Good Morning. Iv'e made Fe K-edge XAS measurements on a mineral with Fe3+ and Fe2+ atoms, looking for the pre-edge feature and using gaussian curves to fit the pre-edge assuming 4 quadrupole...

14 July 2020 8,092 4 View

Does Autodock Crankpep's parameter file contain data for Zn?

I'm trying to dock a zinc complex, but when I tried to prepare the ligand, I get an error saying that there are no Gasteiger parameters available for it. I know you can add atom types in Autodock...

29 June 2020 2,031 2 View

What could be the reason for XRD pattern starting from very high counts/intensity at 3 degree 2 theta?

I am working on XRD analysis of the clay minerals from the sea sediments. My XRD pattern shows very high counts at the start of the XRD pattern (3 degree 2 theta) which is very unusual. The counts...

31 January 2021 4,493 9 View

Is it possible to prepare clay minerals by mixing pure oxides of required elements? What would be theoretical difficulties with it?

Practically this is not at all necessary. But theoretically, would hydrous/hydrothermal synthesis be enough (like mix 1 mole alumina gel and 4 mole silica gel and gently heat) or would it require...

26 January 2021 6,403 3 View

How can I realise the separation of clay mineral part from soil ? and what is this process called ?

Hey; I am looking to work on clays in my soil samples, So I need to extract them first. I know that I should first remove all the bending agents that make the clay sheets stay connected like (...

24 December 2020 7,082 2 View

How to start with Principal Component Analysis?

I want to carry out PCA on a set of chemical data, some of them in oxide form and some in elemental form. The oxides are in percentage and the elements are in ppm. I have understood that, the...

14 December 2020 2,201 7 View

Which software should be used for XRD analysis in case of soils?

I am using XRD test for indentification of minerals and amount of it.

10 December 2020 8,173 4 View

How to identify and quantify glauconite and illite/other mica present in same sample from XRD analysis?

In glauconite bearing sand stone sample other mica group minerals(illite, muscovite etc.) are also present. I want to quantify the amount of glauconite and othermica group minerals. How, I can...

10 December 2020 5,793 19 View

How to obtain a mineral map using Hyperion image in ENVI or in Erdas Imagine?

Input is a Hyperion hyperspectral image. I followed steps Preprocessing, MNF, ppi, nD visualizer and SAM. Also spectral anayst used. I found minerals by spectral resampling of imagery spectral...

23 November 2020 8,915 4 View

Can SEM-EDS give a chemical formula?

I have attached an excel file with the quantification of a mineral I conducted EDS on. I have more excel files of minerals too as I know EDS spectra for only 1 sample will certainly not be...

03 November 2020 6,899 9 View

How can I obtain the cohesive energy density and solubility parameter for a crystal using the Materials Studio software?

Hello, I am currently analyzing properties of some minerals such as Bi2O3 by MD using Materials Studio, I need to obtain the cohesive energy density (CED) to obtain the solubility parameter,...

02 November 2020 4,356 1 View

How much acid do I need to convert a basic solution into an acidic soluion?

Assuming that there are no chemical buffers present, can anyone confirm that if I want to convert the pH of a basic solution to the pH of an acidic solution then the amount of a monoprotic acid...

27 October 2020 9,156 7 View