How can I calculate teh crystallinity degree of graphene oxide?

I had treat my XRD diffraction pattern by Highscore to calculate the crystallinity degree Xc and I have the formula but I dont no the 2Theta of Ac and Aa to calculate Xc. Is it like polymers...

10 February 2021 6,305 5 View

Hello , is there anyone who can tell me the effect of extrinsic and intrinsic in meshing a structure with a hole on the stress intensity factore SIF?

does meshing the hole or not in the structure has an effect on the value of stress intensity factore KI and KII

17 November 2020 5,628 3 View

Insignificant main effects, but signiciant interaction in 4 X 2 X 5 three-way factorial ANOVA?

I ran a 4 X 2 X 5 three-way factorial ANOVA to explore any viable variance in EI (Emotional intelligence) across the participants' age, gender, and YTEx (years of teaching experience), and found...

21 July 2020 5,654 4 View

What is the optimal way to transform coordinate into grid like map ?

Given a set of longitude and latitude, what is the optimal way to group the data into a matrix n*m where n and m would be respectively the height and depth of the matrix?

26 May 2020 2,045 1 View

What is the minimum value of the coefficient of determination, which may be acceptable for validating a hydrological model?

Coefficient of determination R^2

12 March 2020 9,745 15 View

What is the recommended tool to assess the quality of case-control studies included in a meta-anlysis?

I am working on a meta-analysis of case-control studies. I used Newcastle-Ottawa scale (NOS) to assess the quality of the studies. I couldn't find a good reference to interpret the results...

08 March 2020 7,961 4 View

Titane dioxide (TiO2) in toothpaste : What is the potential risk of the nanoscale particules?

Ratio of micro/nano particules of TiO2 in toothpaste which could be tolerated

04 February 2020 4,134 4 View

I want to use the ECG-ID Database (310 ECG recordings with annotations). How can I read the .atr, .dat and .hea automatically (matlab for instance)?

I want to use the ECG-ID Database (310 ECG recordings with annotations). How can I read the .atr, .dat and .hea automatically (matlab for instance)? Manually It will take ages using the physionet...

27 December 2018 3,311 2 View

Can you help me with providing a program to calculate PbO vs. ThO2 isochorn?

A computer program for the CHIME age calculation to estimate the isochron age from a dataset of ThO2, UO2 and PbO or Th, U and Pb analyses of Th- and/or U-bearing minerals.

21 November 2018 1,137 3 View

What is this curved, different colored band on my agarose gel?

I ran 10ul of a 50ul PCR reaction on a 1% agarose gel in fresh TAE, and I observed this curved yellow-ish band underneath my intended product. The highest band is ~1700bp which is the size of my...

16 July 2018 1,458 3 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

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View