Is it possible that an item belongs to more than one factor in a CFA?

Hi, I have a problem with a confirmatory analysis. I have 40 items of which 10 were strong, but the maximum likelihood analysis tells me that I must count 4 factors of these 10 items, thus I am...

12 April 2020 1,357 3 View

Do you have any suggestions or protocol?

I am interested in studying a membrane protein in insect larvae (prohibitin). I'm having trouble visualizing it in western blot. When the protein extract is stored in freezing, when it thaws,...

09 July 2019 4,853 3 View

What is the pressure drop MOUDI M110 magnehelic gauge?

I have a question for those who have a MOUDI 110 ... what is the optimal pressure drop of the magnehelic gauge (upper and lower)? Using glass fiber filters. And what's if the optimal flow at the...

31 December 2018 4,330 0 View

Could you help me to choose a biosafety cabinet?

03 April 2018 7,321 0 View

PCSF HYSPLIT Forward trayectories interpreted like a receptor area?

HI, A a question about PSCF if with backward tracyectories the interpretation is potential sources....then a calculation of PSCF with forward trajectories will be interpreted like a receptor area?.

11 December 2017 6,050 0 View

How should i run an adsorption experiment of ferrite (MnFe2O4) and heavy metal (Cu,Pb,As ,Se) using UV-VIS ?

What kind of blank should i use to tar the UV? I just want to mesure metal concentration before and after adpsortion process adding ferrite nanoparticles.

30 November 2017 5,297 3 View

How is the Coefficient Pressure affected at high AoA?

29 October 2017 1,883 3 View

Why anova is significant but post-hoc test not

11 July 2017 6,178 7 View

How to obtain RNA from insect intestines? do you have a reliable protocol?

We are interested in RNA isolation from insect intestine. Actually we use Trizol and we obtain a lot of contaminants (protein and maybe carbohydrates). After phenol/chloroform purification,...

21 June 2017 4,778 3 View

How to obtain RNA from insect intestines? do you have a reliable protocol?

We are interested in RNA isolation from insect intestine. Actually we use Trizol and we obtain a lot of contaminants (protein and maybe carbohydrates). After phenol/chloroform purification,...

05 June 2017 617 4 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

Recognition of Molecules from a file containing molecular dynamics trajectory?

Can anyone recommend a good code/software/implementation to identify the change of molecules (bond creation/break, number of molecules at a given timestep, etc.)? I am currently working with XYZ...

12 January 2021 1,655 4 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