What is the importance of calcination step before annealing ?

In synthesizing manganite nano particles or any other nanoparticles, is it necessary to perform calcination step. because annealing will also be carried out afterwords at higher temperature than...

11 December 2017 3,332 10 View

Nano particles filtration using filterpaper ?

i have synthesized nickel zinc ferrite nanoparticles, particles size is around 20 nm, calculated using TEM. and is coated with polymer. suspension remain in good condition for like a month....

03 April 2017 8,896 10 View

Triethylene glycol coated nanoparticles filtering ?

I have synthesized triethylene glycol coated cobalt ferrite nanoparticles. particle size is about 15 nm. when i tried to filter it, it wont work. I mean all the particles remain on 200nm filter...

03 April 2017 1,112 2 View

What is the heat capacity of nickel zinc ferrite nanoparticles?

what is the heat capacity of nickel zinc ferrite nanoparticles,thanks

11 December 2016 814 2 View

Why is XRD baseline different for different samples?

Why is XRD baseline different for different samples? i have done XRD for NiZnFe2O4 and for CoZnFe2O4 nanoparticles, for first one the baseline starts from 1500 and for second one from 1200. please...

11 December 2016 289 10 View

I want to estimate Curie temperature from hysteresis curve. what are the methods?

i want to estimate curie temperature from hysteresis curve. how do i do that, please help

11 December 2016 3,634 0 View

Difference between ATR and FTIR

so , i was characterizing the coating of nano particles. since i have easy access to ATR i thought lets get the data using ATR(solid sample), however when i compared it with FTIR(in liquid) the...

10 November 2016 9,262 2 View

I synthsizd Co0.4Ni0.6Fe204, XRD is perfectly ok but ICP data is quite strange. it's Fe 0.156mg/L Co 0.030mg/L and Ni 0.12 mg/L. any suggestion?

08 September 2016 2,376 3 View

Why the base intensity of some samples start at different level on XRD graph. i mean for some sample base line start at 1500 and some 50 , why ?

why the base intensity of some samples start at different level on XRD graph. i mean for some sample base line start at 50 and for some base line starts at 1500 intensity level. Also for some...

04 May 2016 3,898 6 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Research on Supply Chain Management in Indian context?

Hi, I am planning to apply for the PhD degree in the Supply Chain Mgt. with specific area of "Cold Storage warehouses" during Pandemics and wars. Where lock downs and shut downs are frequent....

02 March 2021 285 2 View

Would fecal samples stored at -20C for over a year impact metagenomic analysis?

Dear All, I have access to some rodent fecal samples that have been stored at -20C instead of -80C. Anyone have experience with the impact of stowage condition on comparative metagenomic analysis...

01 March 2021 2,512 1 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

What is recommended for solid domain in ANSYS FLUENT?

Should I mesh the solid domain ? or should I use wall thickness? or Shell conduction? for Heat Transfer between two fluids of a Heat Exchanger. what is recommended?

01 March 2021 9,785 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View