Does all mineral oil contains asphaltenes?

I had a mineral oil of 460cSt (containing sulphur and phosphorus), after addition of nanparticles (carbon nano tubes and graphene) the viscosity decreased significantly. literatures says that the...

07 August 2018 9,447 1 View

What can be the reason for high coefficient of friction and low wear scar in a lubricant containing carbon friction modifier and zinc oxide?

A lubricant contains zinc oxide nano particles and carbon FMs, the coefficiet of friction is high while the wear scar diameter is less for the samples. The load was 392N @1200rpm @75degree C.

03 April 2018 3,084 6 View

Does the coefficient of friction values depend on the type of tribometers used?

Experiments were carried out using pin on disc apparatus (120N, 800rpm, a flat faced pin 10mm, room temperature) and four ball test(120N,800rpm , AISI 52100 balls , 75 degree C). The lubricant...

11 December 2017 3,529 2 View

What is the Youngs Modulus of Zinc Oxide Nanoparticles?

Elastic modulus of Zinc Oxide nano particles

07 August 2017 7,994 2 View

How to explain the phenomenon of extreme pressure properties in case of graphene and carbon nano tube?

Graphene and carbon nano tubes shows better extreme pressure characteristics when used as additives.

06 July 2016 8,544 0 View

Can anyone tell me some applications where we use gears of hardness 22Rc-30Rc?

Specific Application please.

06 July 2016 3,358 2 View

Which is more preferable mixed lubrication regime or boundary lubrication regime?

06 July 2016 9,847 7 View

How does Young's modulus,shear modulus,Poisson ratio of a nano wire/tube/particle influence the coefficient of friction?

Mechanical properties influencing coefficnet of friction.

05 June 2016 1,316 2 View

Which roughness parameter would be more suitable to compare between steel surfaces : average roughness,skewness or kurtosis?Why?

05 June 2016 3,356 3 View

Does graphene exhibits better frictional properties than carbon nano tubes?

Graphene shows better frictional properties than carbon nano tubes.

05 June 2016 2,558 1 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

How can I assign a velocity along one direction to CO2 molecules in a molecular dynamics simulation using GROMACS?

Dear all, I am trying to perform a MD simulation about the interaction between CO2 and a polymer. I create my model, solvate it and perform the NVT and NPT equilibration. Now I am not able to...

26 February 2021 10,014 3 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View