How to make sure that the discoloration of dye in the presence of nanomaterials is due to adsorption or catalytic degradation ?

10 November 2015 9,374 3 View

What can be the reason for a Zn to O atomic ratio of 1:2 in EDX which was synthesized by solution combustion?

I have synthesized ZnO through the solution combustion method and the EDX showed a Zn atomic % as 33.37 and O as 66.63 but the XRD showed only ZnO only. How can the presence of Zn to O ratio of...

02 March 2014 3,803 21 View

Does anyone know of a technique to determine the position of dopant in metal oxide?

I synthesized Nitrogen doped ZnO . Edax showed the atomic % of N. but how to make sure that dopant in the lattice not on the surface of metal oxide .

02 March 2014 8,214 11 View

What are the reasons for lower intensity in room temperature PL compared to the low temperature PL?

The PL intensity of ZnO decreased in case of room temperature PLcompared to low temperature (6K). What are the reasons for it and what role does temperature play in characterization and which...

03 April 2013 8,902 19 View

How do I calculate error bars for band gap calculation through DRS?

I calculated band gaps for pure and doped metal oxide through DRS and when I presented my work in a conference I was suggested to calculate error bar.

02 March 2013 7,003 1 View

Is there any model to determine the concentration of defects and vacancies in semiconductors?

I am working on modifying the defects and vacancies by doping. I am studing through PL the vacancies and defects but there are controversies in the contribution of emission by vacancies and...

02 March 2013 1,353 14 View

What are the reasons for peak broadening in the case of nanoparticles compared to the bulk?

It is well known fact that peak broadening occurs when the particle size falls in nano range.

02 March 2013 674 19 View

How to interpretate SAED pattern for lattice spacing and lattice fringes?

From HRTEM image

11 December 2012 1,480 4 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

No title

02 March 2021 324 2 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

What is the difference between L1 and L2 regularization in machine learning?

L1 and L2 regularization

28 February 2021 4,187 3 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

Is there any published or unpublished statistics on dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, US, UK or any other country?

Are there any published or unpublished statistics or papers on the dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, USA, UK, or any other country where vaccination has started at...

28 February 2021 4,237 1 View