I'm looking for N-substition reactions of carbazole, does anyone have any tips for these in order to get efficent yield and simple synthesis protocol?

I want to synthesize N-phenyl Carbazole

31 December 2017 6,880 6 View

How to remove chloramine T?

06 July 2016 881 3 View

Solvent-accissable void volume?

How can I calculate void space volume using palton?

31 December 2015 7,590 0 View

On the basis of the 1H NMR spectrum, how to estimate that he quantity of absorbed solvent?

09 October 2015 5,069 0 View

What are other causes of red shift in fluorescence spectra of chromophore apart from pi-pi stacking?

My sample contains anthracene derivative with a solvent means solvate, I have done SXRD there is no such pi--pi stacking but it showed red shift don't know how to explain. if someone have...

05 June 2015 502 7 View

How to dissolve?

I crystallize my compound from methanol one year before now I want to dissolve it in the same solvent it didn't work out . Any suggestion please on how to dissolve it again

04 May 2015 5,017 0 View

Can someone suggest a book about basics of crystallography?

Can someone suggest me or share here book about basics of crystallography. I don't have major in crystallography.

03 April 2015 4,470 10 View

Can anyone help me how to describe the SEM image?

I have done SEM analysis for my crystal, don't know how to describe it and which image should I put in paper. Thanks

03 April 2015 4,134 5 View

Why the fluorophore has a larger dipole moment in the excited state?

Can anyone tell me

01 February 2015 426 4 View

How to calculate void space volume of unit cell using Platon?

Does anyone knows

01 February 2015 7,682 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 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

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Is there a classification scheme for rock cavities or caverns with respect to their size and shape?

The range of forms and sizes of cavities in rock is very big. Is there a classification scheme for rock cavities regarding their size and shape?

02 March 2021 4,511 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View