Is it justified to compare the free energy change of two reactions and conclude one is more favourable than the other?

Suppose we consider the binding of a ligand L to a metal M, M+L=ML and M+2L=ML2 . We compute the Gibbs free energy change for two reaction using DFT. But can we compare this two free energies to...

12 January 2021 5,893 4 View

How to know the ratio/actual number of training and testing sample in the RF classifier in SNAP platform?

Random Forest classifier is one of the most widely used classifiers used for supervised classification. The classifier provides accuracy and precision based on some training and test samples....

20 October 2020 6,425 4 View

How can i obtain electric displacement field in Piezoelectric bonded joint using Abaqus?

Mathematically, electric displacement is a vector quantity defined as {D}=([e]{E}+{P}), where {E} is local electric field, {P} is Polarization per unit volume and [e] is the third order tensor...

20 August 2020 4,789 1 View

How to calculate van der Waals radius theoretically?

I am trying to calculate van der Waals radius for silver atoms and ions. Could anyone explain the steps required to perform accurate calculations.

03 August 2020 2,574 3 View

Where can I get the Rainfall Statistics of India (Archived report)?

I need the yearly Rainfall Statistics of India (2001-2017). I have got from 2012-2017. However I am unable to find the reports for rest of the years mentioned above. Can anybody please provide me...

06 February 2020 6,397 2 View

How to align large plasmids (20Kb+) in Mac Vector?

I was trying to align 3 plasmids each around 20Kb in Mac Vector. I used the "Align to ref." tab followed by adding the sequences and then aligned them. However only a portion of each sequence is...

03 February 2020 2,635 1 View

How to understand soil taxonomy?

I was trying to prepare different soil maps (like soil type, soil texture etc.) for the state of Jharkhand in India. I found some of the maps in Govt. portal. However, I am finding it difficult to...

08 December 2019 8,446 3 View

Where can I get govt drought statistics/reports for India?

I was trying to detect drought scenarios using remote sensing techniques. But I need to validate the results using the govt statistics. Any idea where I can get state/district wise reports or...

24 July 2019 8,699 5 View

Where to get in situ soil moisture data for India?

I have already have satellite data derived soil moisture index. Also downscaled soil moisture obtained from ESA CCI soil moisture data products. To validate these data I need in situ soil moisture...

24 June 2019 771 8 View

How to do overlap PCR?

Hi I am trying to join two linear 1.2 kb fragments with overlaps. I read a protocol which says at least 1/2 of the PCR mix has to be the equimolar concentrations of the fragment. Why is so much...

30 May 2019 9,234 2 View

Interpretation of a fluorescence Emission spectrum ?

Hello, i work with a spectrometer which only render the fluorescence emission spectrum. Until now i just found how to interpret an exitation- and emission spectrum together to generate deeper...

20 February 2021 1,291 3 View

Extraction of phytochemicals from juice?

I am trying to extract phytochemicals from cane juice. I have tried lyophilization and SALLE techniques but the final product is too sticky and sugars are hindering any further extraction. I have...

03 February 2021 8,784 3 View

How to screen phytochemicals directly from the crude plant latex?

Number of methods are available to screen phytochemicals through extract prepared in different solvents including aqueous and organic. Is there any method/ published work related to phytochemical...

01 February 2021 7,348 4 View

I have started a gaussian calculations for DFT analysis of phytochemical, it is showing a error 2070?

I am doing optimization of a phytochemical but when i submitted the file for calculations it shows error 2070. Can anyone please tell me what does it mean? and what should i do to solve it. I have...

30 January 2021 7,932 1 View

What are the exact phytochemicals present in the plant extracts which act as reducing and stabilizing agents in the green synthesis of Nanoparticles?

There are hundreds of research articles published on the green synthesis of nanoparticles of various metals and metal oxides nanoparticles using plant extract (where mostly the extract of leaves...

30 November 2020 735 6 View

How can I analysis a low-concentration organic matter in NaOH using fluorescence spectrometer or LC-OCD?

I want to analysis components of organic matter in NaOH using fluorescence spectrometer or LC-OCD. For example, TOC result is 3 mg/L, it is very low. So I want to concentrate or extract the...

23 November 2020 4,365 1 View

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17 November 2020 6,197 5 View

Some ideas about contamination from Ca 2p always appearing and, therefore, overlaping with Pd3d in a SPECS spectrometer?

Dear colleagues, In our XPS instrument, most of the time when we acquire the Pd3d region (for a wide range of materials containing Pd) it overlaps with a strong signal from Ca2p. Nonetheless,...

10 November 2020 4,487 4 View

What can be the cause of a baseline drift in NIR spectrometry?

I have a dataset including spectra collected with a handled NIR spectrometer (SCiO) over several months. I observe a baseline drift that is consistent with the evolution of the measurement date....

18 October 2020 9,062 3 View

What is the black block for Dark Current in a UV-Vis Spectrometer machine? How to insert it in a Spectrometer machine?

I am trying to construct a calibration curve on a new UV-Vis Spectrometer machine (T80+, PG Instruments Ltd). But when I start by setting the parameters using K-Factor method (pressing...

06 October 2020 2,521 3 View