When some electrical power is driven through a wire which is wrapped around a metal tube, how to know the temp. rise of the tube theoretically??

01 February 2017 9,906 3 View

What are the experimental techniques to confirm the coating of nanoparticles?? And which one is the best to describe the situation??

I have coated a ferrite nanoparticle with an organic acid. But I want to know whether the coatings have been formed around the particles or not. What are the techniques generally used and which...

31 December 2016 8,841 10 View

What are the steps to get a smooth XRD pattern of nano sized powder samples??

How can I get a smooth XRD pattern of nano sized powder. I am using BRUKER D8 advance with a step size of 0.002 and with rotation of 15RPM with 2theta ranging between 10 deg and 90 deg. But what I...

01 January 1970 3,607 4 View

How to prepare a stable MnZn Ferrite ferrofluid using chemical methods??

I want to prepare MnZn ferrite ferrofluid. But the problem I am facing is the surface modification to avoid agglomeration of the particles. I am following the hydrothermal synthesis method for the...

01 January 1970 9,327 1 View

In COMSOL, how one can decide for the proper meshing size?

For complex research related real life problems, how can I decide that which meshing will be perfect for the problem and can rely on the final results of that for publication purpose??

01 January 1970 5,151 4 View

How to activate the surface of the nanoparticles??

I am preparing alloy nanoparticles by ball milling. But, the alloy nanoparticles have neutral surface. How can I make the surface positive or negative charged so that I can add some anionic or...

01 January 1970 4,703 5 View

How to figure out the default parameters that we can get from different modules in COMSOL and call that later for defining another function?

Hi all, I need to know the way to figure out the available by default output values from different modules which can be used in COMSOL. To make my statement clear, I am using the magnetic field no...

01 January 1970 5,091 7 View

What is the proper format of using heaviside function in COMSOL ?

I want to define heaviside function in comsol. How can I do that?

01 January 1970 5,020 2 View

How to implement if else condition in COMSOL??

I am simulating for the subsequent application and removal of magnetic field to magnetic materials to check for the increase and decrease of magnetization. I want to repeat the above steps with...

01 January 1970 1,538 2 View

How we can draw a graph between observed critical parameter versus mesh size in COMSOL? Also, how can we plot relative error versus mesh size?

To know the efficiency of the mesh size, how can we plot the error vs no. of elements/mesh size in COMSOL

01 January 1970 9,448 0 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 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

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

How can Gamma Ray API units be converted to CPS (counts per second)?

Oil and gas companies run gamma ray tool and take readings in API units while Gamma ray is also noted in cps, so how these units can be converted into each other?

24 February 2021 7,545 2 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

How to remove compound ( Europium complex ) from paraffin oil?

How can I remove my compound from paraffin oil? Mistakenly my compound fell in an oil. Compound = Europium complex

22 February 2021 5,667 2 View

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22 February 2021 9,932 11 View

When I mix oil and NaOH solution, Why solid layer in the surface is formed?

During my trial for lubricant oil re-refinery process, I use NaOH as coagulant agent. After overnight of gravity settling, a solid layer in the surface was form. what product is that? since the...

22 February 2021 2,116 4 View

The type of filter paper used to filter an epoxidized oil (the mixture is an epoxidized oil with magnesium sulfate) ?

I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use

21 February 2021 3,944 3 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View