How to measure acid values of unsaturated polyesters?

I've been using the standart AATM 109-01 (2006) procedure to determine the acid values of unsaturated polyesters. In this procedure solutions of Phenolphthalein and Potassium Hydroxide in etanol...

11 November 2020 7,768 6 View

CAS solution whit PIPES ?

To prepare CAS solution for siderophores assay, the protocol use anhydrous piperazine. Can I make this solution using PIPES ? And how? Thanks The protocol i'm following is:...

08 November 2020 2,751 2 View

Sankey Diagram: Waht is the sample size needed?

Hello everyone. I would like to ask your help on the decision about the best methodology to determine the sample size to conduct an observational study. This is a study to be carried out by a...

16 September 2020 9,014 1 View

Does anyone have a reliable protocol to assess cell viability in commercially available GelMA (Gelatin methacryloyl) ?

Hello all, I am trying to asses the viability of stem cells in GelMA (gelatin methacryloyl). Most articles make their own GelMA. However, our team bought a commercially available one. The thing...

13 September 2020 9,086 1 View

Which are the best loading controls for Western Blot excluding the cytoskeleton ones?

I need to use a loading control for Western Blot that neither includes a cytoskeleton protein or a protein that interacts directly with the cytoskeleton. My issue is that I incubate cells with...

27 August 2020 2,735 11 View

Does anyone know or can resolve this kind of Internal Error on Anylogic?

I am currently working on a Urban Traffic Simulation on Anylogic and sometimes when the simulation is running, this error appears and everything stop: "Exception during discrete event...

23 May 2020 8,461 0 View

What is the header of the Gaussian input file for calculating two distinct molecules?

I'm doing simulations with two different molecules, but it always ends up falling into the same problem, it seems that the Gaussian doesn't balance the molecules when I calculate the cation and...

03 March 2020 7,750 2 View

No title

03 March 2020 4,189 1 View

No title

Hello, i need to generate a few parameters of excitation states in a series of molecules. I am using g09. I have a opensuse (linux) with 24 cores, Dell setup (i believe it configures a...

14 February 2020 9,488 5 View

Is anyone interested in setting up a distance research group on agricultural risk management?

I am looking for researchers who are interested in the theme "agricultural risk management" to do a research group at a distance. Each addresses the experiences of local risk management, from...

08 December 2019 8,879 29 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View