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

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

What is global benchmark for skin temperature of furnace?

Currently, i am working on electric heating furnaces (furnace inside temperature is 800 degree C)and to reduce energy consumption best option is reduce heat losses. So, i want to know global...

26 May 2019 6,097 3 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

Any references about insects or animals that can damage or weathering of rock or fossil material?

Are there any references to insects or animals that can cause damage or weathering to the rock or fossil material? books or paper that would be nice. Thank you very much!

24 February 2021 6,805 3 View

Physical-chemical formation of stalactites/stalagmites. what promotes the formation/growth of these structures?

I know, or think I do, the basic idea behind these natural structures, as from what I know they form due to water dripping from the top leaving a salt deposit behind. But started to wonder about...

22 February 2021 1,400 4 View

How do you integrate the 'friction' variable Xi in the Nose - Hoover Thermostat in order to apply it to a molecular dynamics simulation?

Everything tells you the derivative of Xi, but not how integrate the value to implement it into a simulation. How do you do this?

21 February 2021 6,481 1 View

How to implement boundary conditions in Abaqus contact problems?

Hello I am trying to simulate crawling motion of a bilayer beam using Abaqus. Kind of similar to this: https://youtu.be/os-Z3ucoFpA I am using multiphysics enabled (diffusion, deformation,...

20 February 2021 2,916 1 View

Wave velocity and rock density paradox?

Practically it is known that seismic velocity increases as rock density increases, why then does the wave velocity equation involving elastic moduli and density indicate that velocity is inversely...

09 February 2021 1,843 3 View

When to use Darcy or Fanning friction factor in frictional pressure drop measurement?

04 February 2021 6,174 3 View

Conversion of Vs to Vp in geophysical surveys of rock masses?

Dear colleagues I would like to have your kind opinions on the issue that concerns rock mechanics and geophysics in relation to it, for a very specific problem I have. I have attempted to find a...

03 February 2021 3,605 3 View

Is Handheld XRF analyzer useable? and accurate in geochemical test?

What is the different between Lab XRF and Hanheld XRF, is it accurate and useable to analyze sedimentary rocks?

23 January 2021 9,941 6 View