How long should be stable a functionalized CNT? and how can I increase its stability?

I have functionalized MWCNT via both acidic and noncovalent rout, For acidic treatment I have used H2SO4:HNO3 (3:1) while ultrasonication at 55 C, and in non-covalent I used Triton x100, but the...

27 January 2021 4,497 3 View

What is the Melting point criterion in a MD simulation?

I need a quantitative criterion, something other than structural and visual qualitative features of melting in the molecular dynamics simulations.

26 January 2021 9,096 5 View

Athena IE in surrogate modeling?

I was wondering if anyone has deployed Athena IE in surrogate modeling or metamodels for LCA. There are many research involving data-based models for predicting energy consumption, but I haven't...

23 January 2021 2,267 1 View

Graphene model in CST?

Hi everyone, I wanna know about creating the Graphene model in CST. In: Macros -> Materials -> Create Graphene Material for Optical Applications. What is the exact formula that is used in this...

25 December 2020 1,938 4 View

How can I extract MCPD in oil and determination with GC-MS?

Hello everybody I am going to extract MCPD in oil ,but I havent pressurized liquid extraction. How can I extract MCPD in oil and determination with GC-MS?

20 December 2020 7,389 2 View

How can the SAR image be divided into two looks using the spectral diversity method?

Hello I'm working on SAR Images Co-registration.I want to divide my image into two looks with the spectral diversity method. But I did not find its complete formulas in any article. Does anyone...

13 December 2020 3,270 4 View

Are any Ph.D. programs or research labs working on Extraterrestrial habitat and greenhouse?

I am looking for opportunities to expand my research. Please let me know if you have any information. Just a note, I am available for collaboration on papers and projects.

19 October 2020 5,887 1 View

I want to know to calculate green and blue water in SWAT model,if the data is entered on a daily basis, can I receive the output on a daily basis too?

Hi everyone need your help.thank you

22 September 2020 8,704 4 View

How can i increase the pH of synthesic sea water to 12?

How can i increase the pH of sea water to 12? Because when i adding NaOH to seawater the pH does not go above 10 and begins to precipitate.

12 September 2020 564 9 View

How to measure the approximate mass of the attached layer to QCM-D silica coated sensor using the stitch function?

I am trying to form a covalently-bound layer of MPTMS on a QCM-D silica coated substrate, and want to use the stitch function in QTools to approximate the mass of the layer. I do not know which...

24 August 2020 2,076 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

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View