Why the Graphene Oxide solution turns green instead of bright yellow in Tour's method?

I am synthesizing Graphene Oxide from Anthracite Coal. Anthracite coal was first pre-treated with 30% HNO3 for 2 hours at 80 oC temperature. Then washed with distilled water several times until...

28 October 2020 8,076 1 View

How should port be connected in HFSS to micro strip patch antenna to get better results of S parameter plot?

I design a microstrip inset fed patch antenna with exact calculations. The design is on Ansys HFSS. The gain is 6dB and realized gain 5.1dB. I am designing on 14GHz but my S11 2D is not coming...

30 October 2019 239 5 View

Why microemulsion is thermodynamically stable?

What is the mechanism behind it?

30 September 2019 5,141 7 View

What is the difference between GAS CONTENT and GAS YIELD?

I have two set of data, one is the the gas content w.r.t to temperature and the other is gas yield w.r.t to temperature. I cannot correlate the behaviour. The two graphs tells the very different...

16 September 2018 2,513 5 View

How to separate tar, oil and water in a laboratory?

We are working with the pyrolysis of different wastes. The condensate mixture includes tar, oil and water. Before, we used to separate oil and water only from the condensates. But to improve our...

09 August 2018 660 7 View

Why are there bubbles in condensing bottles, during pyrolysis of sewage sludge?

We are pyrolyzing sewage sludge in a fluidized bed pyrolyzer. We are using nitrogen as an inert atmosphere. Before every experiment we check the purging of lines by checking the bubbles in water...

16 May 2018 1,898 3 View

How does one find true proportion in the test below?

22 November 2014 8,643 2 View

How can I put figure as axes in GUI MATLAB??

15 November 2014 1,076 3 View

How can we find the value of parameters of data based on lomax distributed?

I tried to find it with MLE method by R Program. The syntax as...

10 October 2014 8,998 2 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

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

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View