How to remove doppler & pressure broadeneing?

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How can we coat effectively magnetic nano particles by capping agent?

I am working on magnetic nano particles, I want to make its colloidal solution, it is usually observed that even after centrifugation , it some of part remain undissolved, i tried different...

08 September 2019 8,533 1 View

Whta are the advantages of nanorods over nanoparticles?

Nanorods have high surface area, as compared to nano particles, what their best characteristics, not present in nano particles.

02 March 2019 9,113 6 View

Use of internal standard method?

Standard addition method, is used when we want to nullify the effect of matrix, under what circumstances, Internal standard Method is used.

01 February 2019 7,956 2 View

Surface coverage of nanoparticles?

when nano particles surface is modified with the help of fabricating agent how can we find out that surface of nanoparticles are entirely covered by Fabricating material and how do we find that...

11 December 2018 7,225 5 View

How to regenrate a ction exchange resin?

Strong Cation exchange resin are usually regenerated by passing concentrated acid such as HCl, when we pass any monovalent , and divalent metal solution , they show great affinity towards resin,...

08 September 2018 9,628 2 View

Can we skip monochromator in atomic absorption spectroscopy instrument?

In AAS , we work with a line source such as hollow cathod lamp, which provide specific wavelength for any particular element, in form of narrow ad selected wavelength ,so why need monochromator ,...

01 February 2018 7,962 4 View

Is artifical source of light canbe replaced by sunlight in spectrochemical methods?

In spectrochemical methods, we use different excitation sources, can sunlight be used as excitation source by controlling its intensity by the help of monchromator.

31 December 2017 4,405 0 View

What is the use to find soil moisture content?

if soil moisture content indicate about about soil water rent ion ability on behalf of its to hold moisture according to its particle size, and what precautions should be used to collect reliable...

10 November 2017 6,724 0 View

Is soil porosity inter particle or intraparticl property?

soil porosity is interparticle or intraparticle property. if talk about about porous material, these have pores inside themselves, so soil particles also used in adsorption experiment, which...

09 October 2017 1,553 5 View

How do reference electrode maitain their potentials?

A reference electrode sucha s ag/agcl electrode ,saturated with potassuim chloride soltuion.chloride ion the potential of reference electrode is depend over the activity of chloride ions, how do...

08 September 2017 1,079 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View