Hi i want to ask that in order to find out LC 50 (96 hours) of particular toxin for fish. Should we keep the animals with food or without food?

if we expose the fish after acclimatization to particular toxin in order to find out LC 50 (96 hours).Should we keep the fish off feed or with feed for that duration. Some literature show that...

24 February 2021 357 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

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

Is There are any idea to achieve H NMR signals for swollen compound ??

the samples are not completely soluble - just swelled the solvents that's mean the sample may be partially soluble any suggestion, please

16 February 2021 8,801 3 View

Pseudo random number generator in Matlab code ?

i want to implement pseudo random number generator in matlab ...i request to every one if someone have code these PRNG share with me SplitMix Permuted Congruential Generator (PCG) Random...

14 February 2021 6,828 7 View

Please ,How can I correct this kind of error?

27 January 2021 4,815 5 View

What are the standard parameter values of the commonly used classifiers?

What are the standard parameter values of the commonly used classifiers such as Support-vector machine, k-nearest neighbors, Decision tree, Random forest?

06 January 2021 6,940 7 View

How to calculate the band potential of a semiconductor material using energy band gap?

I am looking for methods to calculate the band potential of ZnFe2O4 and Fe2O3.

05 January 2021 6,416 2 View

What Research methodology I will use for Time series data?

I want to conduct a research which is based on time series data ( Suppose, Relation between GDP, Foreign direct investment, Import, Export). Previously I worked with panel dataset and I know the...

31 December 2020 1,207 6 View

PDF of a Book?

Can anyone provide me the PDF for Distributed Energy Resources in Microgrids (Integration, Challenges and Optimization)?It would be really helpful

27 December 2020 8,015 3 View

How can I do y-scrambling( y-randomization) to test the developed machine learning-based model ?

Dear researchers : y-randomization is one of the special tests of machine learning approaches. I want to evaluate my developed machine learning-based models, to predict active peptides, by...

26 October 2020 1,196 2 View

Can we consider a molecule as a "drug lead" if it has a positive charge in its structure?

Can we consider a positively charged molecule as a drug lead while designing a drug using computational tools?

07 September 2020 9,228 3 View

How can I explain larger R-squared Cross-Validation from leave many out as compared to to leave-one-out?

I have a problem with my cross-validation R-squared values. Dear All, Please I am writing to seek some assistant on computing cross-validation R-squared with R-studio. I have attached the...

01 February 2020 9,122 3 View

How I can learn qsar study techniques i organic chemistry ?

I am completely unknown to qsar can some one teach me or tell me how can I do it

01 February 2020 7,239 20 View

How to create comfa contour map?

Thank you for reading. I'd like to create contour map generated with the CoMFA. If you know how, please tell me the reference paper or books. And is it possible to create it when using other...

27 January 2020 7,429 3 View

How to create comfa contour map?

Thank you for reading. I'd like to create contour map generated with the CoMFA. If you know how, please tell me the reference paper or books. And is it possible to create it when using other...

31 December 2019 5,746 3 View

How to process salt compounds in QSAR modelling?

Hi, I'm working on QSAR modelling for toxicity prediction. In data collection and processing step, how can I process salt compounds that include one metal cation with more than two organic...

20 November 2019 9,798 2 View

How to process salt compounds in QSAR modelling?

Hi, I'm working on QSAR modelling for toxicity prediction. In data collection and processing step, how can I process salt compounds that include one metal cation with more than two organic...

10 November 2019 6,190 2 View

Which QSAR descriptors are related to ligand entropy?

I am trying to create a ML model which includes various energy terms accounting mainly for the enthalpic contribution to ligand-binding. However, entropic contribution is neglected, although it...

18 October 2019 7,328 6 View

Which QSAR descriptors are related to ligand entropy?

I am trying to create a ML model which includes various energy terms accounting mainly for the enthalpic contribution to ligand-binding. However, entropic contribution is neglected, although it...

09 October 2019 8,523 5 View