How to determine the moles of alkali required for saponification of the oil for fatty acid extraction?

I have calculated the saponification value of the oil. Now, what is the calculation to determine the amount of alkali required for the saponification value? How to determine the molecular mass of...

20 September 2020 3,492 3 View

How can I create freeze drying set up in lab by our own?

I don't have freeze drying machine , so I want to manually create an arrangement in my lab. Is there any method to do that? I appreciate your help. Thanks in advance.

20 March 2018 3,540 2 View

Getting higher value of natural frequency of shell using TSDT than that using FSDT. why?

08 September 2016 9,626 3 View

About the sample preparation for the TEM analysis?

Dear Colleagues If the sample is solid, then how much amount of the materials is generally required for the preparation of the respective sample's solution for TEM analysis? In case of the...

02 February 2016 7,729 3 View

How do I model creep rupture in Abaqus?

I want to model creep rupture of D9 tubes using Abaqus. From experiment I have the minimum creep rate and rupture life. If I am modelling with the time hardening law then I am getting the creep...

13 July 2015 1,880 7 View

How to model interface properties for randomly distributed particle reinforced composite in Abaqus /ansys/comsol ?

06 February 2015 4,123 9 View

How can we find the results for named selection nodes in Ansys Workbench?

I 'm doing analysis on solid objects in Ansys workbench. I need to find the result for particular named nodes. I have crated a group of nodes where I need to find result using named selection, but...

27 May 2014 577 2 View

For a rechargeable battery, what should be the minimum number of charge-discharge cycles.

Actually I want to know for electrolytic manganese dioxide, battery material for the use in rechargeable Zn-alkaline battery applications (KOH/LiOH electrolyte) what should be the minimum...

08 January 2014 4,942 1 View

How to relate relaxation time values obtained from different equation?

I tried to fit the frequency vs Dielectric constant and f vs Dielectric Loss graph with HN equation. I got different Tau (relaxation time) values from the fittings of both graphs. What I have to...

12 January 2021 8,467 6 View

How to segregate electrode-dielectric and dielctric-dielctric interface polarization after Capacitance VS Freq. measurement using impedance analyzer?

After measuring the capacitance vs frequency for my MIM capacitor consisting of alternate layers of TiO2 &Al2O3 , there is a rise in capacitance value of ~ 20-160 nF at 100 hz, starting to...

17 December 2020 7,786 3 View

Can I use 'relaxation' constants on the linear system matrix to fit a non-linear model?

I have a model that consist of two ODEs and one PDE which are all coupled and non-linear. When I linearize the system around the steady state and simulate the system with initial values that are...

23 November 2020 6,648 3 View

A problem in simulation of non-newtonian flow by MRT-LBM?

22 November 2020 4,778 2 View

Annealing in NVT or NPT?

Dear all I want to simulate a system containing polyelectrolytic and water. I would like to do annealing for more relaxation. But, I dont know if annealing process is better to do in NVT or...

30 October 2020 745 1 View

CG relaxation with B3LYP in VASP?

I am trying to CG relax a amorphous GeSe system with B3LYP and single K-point (gamma). Even though I have a 250 atom model, the calculations seem to be extremely slow. Is there a way to speed up...

23 August 2020 8,848 4 View

How to find gR(t)=normalized shear modulus?

I want to use relaxation test data in abaqus. Abaqus wanted terms like gR(t)=normalized shear modulus at time (t) and long term normalized shear modulus to find prony series. can you help me in...

21 August 2020 317 1 View

Can anyone explain the dynamic relaxation in DEM??

DEM is based on the dynamic relaxation. But we use this dynamic relaxation in FEM which is based on discretizing the continuum domain and assign the lump masses at the nodes. But, we don't do this...

02 August 2020 5,012 1 View

Why does the equation of balance of Equilibrated force (equation containing voids) not include any thermal relaxation parameter?

In most mathematical problems considering voids, why does the equation of balance of Equilibrated force not include any thermal relaxation parameter considering Green-Lindsay theory or any higher...

20 July 2020 5,481 6 View

Can you use the FreeRate model for heterogeneity across sites in MrBayes?

Using IQTREE I received the most optimum models for my data to analyse phylogenetic tree-reconstruction. IQTREE is able to use, aside from the Gamma distribution for heterogeneity across sites...

31 May 2020 2,352 4 View