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

Charmm/GROMACS Residue 'ZN' not found in residue topology database?

I am trying to do some MD simulations of a protein with zinc ions. I am trying to use a charmm forcefield (I have tried 2017 and 2021) and Gromacs. I get an error when doing pdb2gmx Residue 'ZN'...

12 February 2021 9,367 2 View

Which is the best gene editing tool among TALENs, ZFNs, CRISPR and HENs?

Since two decades we came across many tools to edit the desired gene and genome viz., clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated protein 9 (Cas9), (2)...

27 December 2020 7,667 10 View

Why peaks are shifted in XRD anlysis ?

I have synthesized zinc oxide nanoparticles by physical method (sputtering) direct interaction of plasma with zinc target and it is done in atmosphere. The sample were prepared at different...

18 December 2020 10,010 6 View

How to know if Zinc Oxide is coated on the glass substrates?

Hello all I have prepared Zinc Oxide nanoparticles using sol gel synthesis. I tried to coat the ITO and glass substrates with the ZnO nanoparticles ( dispersed in ethanol). But I am not sure if...

08 December 2020 3,692 8 View

Why band gap energy of cobalt ferrites is increased with increased in zinc(dopinng element) concentration?

In most of cases band gap energy of cobalt ferrites is decreased with increase in Zinc concentration that is hold to brass model. But when energy band gape is increases with increased...

03 December 2020 2,439 3 View

Why does zinc chloride salt powder melt at 50 degrees?

I have a question about zinc chloride salt powder. When I put zinc chloride powder in an oven at a temperature of 50 degrees to dry it (because it may absorb moisture), after about an hour, the...

26 November 2020 3,751 3 View

How should I prepare solutions of divalent metals at neutral pH?

Hello, I would like to prepare metal solutions of 50 mM Mg, Zn, Ca, and Cu (separately) from their chloride salts, to study protein-metal-ion interaction. For this reason, I would prefer that it...

25 November 2020 1,924 11 View

How to create a metal binding curve for a metalloprotein using prism?

hello, I need to create a binding curve to measure the affinity of my enzyme to its zinc cofactor, to determine the Kd value. I'm using prism (graphpad) and there are a lot of options under the...

14 November 2020 2,120 3 View

Which PEIE to use?

Hello all Thanks for answering my previous questions. I am making perovskite LED and intend to use PEIE on zinc oxide layer as ETL. But I am not sure what version of PEIE to us. There is the one...

08 November 2020 5,710 3 View

How to pack empty column with zinc powder?

How do you pack empty column with zinc powder? This is for the Vitamin K1 analysis using HPLC.

26 October 2020 3,904 3 View