Could someone provide me standard procedure for detection of metal in detergent ink and other cleaning agent?

Please provide standard procedure for detection of metal in detergent ink and other cleaning agents.

08 September 2017 1,955 1 View

Can someone teach how to do ionic balance for wastewater samples?

Kindly suggest me.

05 June 2017 2,556 5 View

Is there any possibility for getting higher BOD value than COD in refinery waste water samples?

Generally, which parameter can be high in refinery waste water.

04 May 2017 4,634 28 View

Is there any possibility for getting higher Emulsified Oil value than Free oil in refinery waste water samples?

04 May 2017 382 3 View

Can someone provide me BSEN 60079-29-2 standard method?

10 November 2016 3,325 1 View

Could someone suggest any international standard method for microbial Indoor air quality?

10 November 2016 5,526 5 View

I have some rainfall data since 1984 to 2016. Can i predict for rainfall upcoming 2050 using this data?

Kindly provide me datail about the same without using model. please also suggest good model for the same. Thanks in advance.

09 October 2016 1,234 7 View

How can i calculate stack emission rate in kg/hr?

I want to calculate emission rate in kg/hr. its urgent please suggest me.

01 February 2016 5,701 2 View

Can someone provide me some methods?

ISO - 8573-1: 2001 [E]ISO - 8573-2: 1996ISO - 8573-3: 1999[E]ISO - 8573-4: 2001 [E]ISO - 8573-5: 2001 [E]ISO - 8573-6: 2003[E]ISO - 8573-7: 2003[E]ISO - 8573-8: 2004 [E]ISO - 8573-9: 2004...

31 December 2015 5,653 0 View

Problem encountered when modeling with Delft3D?

Is there someone with experience with Delft3D from Deltares? I'm having a problem with Quickplot when I export a variable into ".mat" file format and try to re-open the exported file in Quickplot...

31 December 2015 1,831 0 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 View

How to calculate radial distribution function (RDF) of a complex from Ab initio MD simulation trajectory?

Hi all, Is there any software or webserver to read the molecular dynamics (MD) simulation trajectory which obtained from Ab initio MD simulation to calculate the atom-atom radial distribution...

25 January 2021 9,474 3 View

Solving diffusion- reversible chemical reaction equation: How to solve both terms numerically?

I am using finite difference method to discretize the parabolic equation (explicit method), but confused about the chemical reaction term. Solving the generic equation for i specie involves a...

24 January 2021 1,149 18 View

Doubt in DFT geometry preparation?

Hi all, I am trying to perform some ab inito DFT calculations using cp2k code. I have a unit cell of 120 atoms and would like to know how to refine or reduce the number of atoms in the unit cell...

20 January 2021 6,024 3 View

Why it is required to optimize a unit cell generated from cif lattice parameters and atomic coordinates during ab initio solid state calculations?

A cif file represents a unit cell with minimum energy. My question is, in the start of any ab initio calculation for unit cell generated from the cif file, why we are advised to optimize cell...

19 January 2021 9,883 3 View

Is it possible to calculate entalphy of LiBr/H2O or another solution if we know correlation of specific heat without using any software?

Is it possible to calculate entalphy of LiBr/H2O or another solution if we know correlation of specific heat without using any software?

17 January 2021 5,522 3 View

What is the best way to calculate electrical conductivity of semiconductors and the same system with a layer of oxide using Quantum Espresso?

I have tried BoltzTrap, and EPW but I'm not sure whether Boltzmann Transport Equation is a right approach for a complex system (semi cond. + an Oxide layer or even the semiconductor itself). Also...

11 January 2021 4,597 4 View

How to calculate IR and RAMAN spectra form Born charge ?

I am using crystal 17 for my solid state ab initio calculations. For some reason the program is not able to produce the Raman spectra but have generated born charges. Is there any way to produce...

11 January 2021 2,317 2 View