How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

Can wavelet packet sub-bands be stacked together to form an image?

I have a 1D signal and I have done wavelet packet decomposition on it which is giving several sub-bands. Can I stack these sub-bands (one below other) to form a 2D matrix and hence an image...

27 November 2020 1,269 5 View

Why the IT services companies (based in India) are mainly patenting only at the USPTO?

Please suggest some papers/reports on the changes in the policy with respect to patenting of computer software in India. Does it have any implications as to why the IT services companies (mostly...

12 November 2020 8,351 1 View

Why does HeLa transfected with connexins grow at a much slower rate and form colonies ?

I have two cell lines, one is the wild-type HeLa Cell Line (wt-HeLa), and another is a virally transfected with Connexin-43 HeLa Cell Line (HeLa-43). I have grown both the cultures overnight,...

01 March 2020 8,106 3 View

Is Diethylamine detectable in UV/Vis spectrometer?

I tried to analyse diethylamine in hplc with UV detector but it was not giving satisfactory results. Will using UV/Vis spectrometer in case of diethylamine will be usefell?

27 February 2020 8,686 3 View

Does the aqueous extract of Neem bark have same constituents and composition of any other organic solvent extract of Neem Bark ?

I am trying to do an experiment where I examining the effect of Neem Bark Extract on cells. I have two sources for the extract. a) Self-made Methanolic Neem Bark Extract and b) Aqueous Neem Bark...

07 February 2020 3,076 3 View

I performed a DSC experiment in Alumina (Al2O3) crucible. The alloy appears to have reacted with crucible itself. What can be the reasons for this?

I am working on Zr based metallic glass which reacted with the Alumina crucible in which I was performing the DSC experiment. Kindly suggest possible reasons for this anamoly.

23 January 2020 8,039 2 View

How I can remove metals from an enzyme experimentally? Please provide detailed protocol, if possible step by step?

I previously tried some protocol to remove metal from enzyme to make apoenzyme, but it did not work. Questions in this regard: 1. My apoenzyme gave 20% activity but in many literary sources...

26 December 2019 8,079 3 View

Accelerometer not responding to continuous thrust or force?

I have a analog MEMS accelerometer MMA from freescale and I am trying to connect to my application to monitor the impact. During my initial test, I found I can see a signal peak whenever a...

03 December 2019 5,440 4 View

How can I quantify the effect of electronic configuration of participating elements in its role in increasing the entropy of High Entropy Alloys?

I wish to incorporate the electronic interaction entropy change in the calculation of total entropy of a high entropy alloy. Please suggest ways to quantify it in case of any arbitrary equiatomic...

24 June 2019 3,482 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

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

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

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 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