How to separates S- nicotine and R- nicotine?

More Samarth Zarad's questions See All

I am aiming to detect alarmins/DAMPS from cell lysate with untargetted mass spectrometry. Is this possible?

alarmins im interested in include: HMGB1 and S100 proteins amongst others Will other cell lysate proteins mask the signal from the alarmins im interested in?

30 May 2024 8,127 0 View

What spectroscopy/spectrometry technique is best suited for quantitative metabolomic profiling / unbiased biomarker discovery(at low concentrations)?

I am looking to quantify metabolites released into cell media, especially alarmins/DAMPS and cytokines. The concentrations of these inflammatory proteins will be on the nanograms/ml or nanomolar...

03 January 2024 1,628 0 View

Why we consider -10 dB as a reference for return loss in case of Microstrip Patch Antenna ?

While considering the value of S11 we always take -10dB as a reference for return loss. Why we consider -10 dB and what is the mathematical justification for the same.

19 August 2021 9,953 28 View

Does IDRISI TerrSet include Cellular Automata based modelling?

I am not able to find anything related to Cellular Automata in IDRISI TerrSet. I have seen articles stating the use of Cellular Automat in form of CA-MARKOV modules in IDRISI Selva. It used to be...

03 March 2021 8,110 3 View

Reference article for solubilization technology guidance map?

Dear all I read one literature in past, which discusses selection of solubilization technology based on the melting point and log P of active pharmaceutical ingredient. The faint content back of...

17 December 2019 6,996 3 View

What is distance "d" specifed in planes table in Mercury (CCDC)?

While visualizing crystallographic planes using Mercury (CCDC), what is the distance specified over here? (Image attacched) Is it distance of plane? If yes, then reference to what? Can we use...

26 November 2019 6,872 0 View

Can we perform pair distribution function analysis using Microsoft Excel?

I am willing to get insights on how to perform pair distribution function analysis of powder diffraction data obtained for amorphous pharmaceutical. I have googled and found some software...

26 November 2019 8,916 4 View

How to do optimization of array antenna on CST using Genetic Algorithm?

I have made an antenna array and want to optimise using GA. Kindly tell me!!

06 November 2019 6,329 2 View

A wide band antenna is made. After some manipulation the antenna is dual band. Will the gain be same or different as that in wide band antenna?

A wide band antenna is made and after some manipulations the antenna is now working as dual band !! I want to know that whether the two Antenna will give the same gain or not ??

17 October 2019 3,513 4 View

In diesel combustion process, is there any chances of formation of N2O ? If So how to eliminate this gas formation or trap this from tailpipe ?

It is very interesting to know the formation of N2O in the combustion chamber. The formation of NOx takes place through 3 ways and one being the most common, that is the thermal method, other two...

13 August 2019 8,699 5 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

Aspen Plus Simulation?

Greetings When one is to perform Simulation or modelling of Pyrolysis of Biomass Waste materials using Aspen Plus software, and one has both the macromolecules breakdown (Cellulose, Lignin and...

06 August 2024 5,023 1 View

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

How can I add own Henry coefficients in Aspen Plus?

Hi, i would like to simulate an absorption process in Aspen Plus. I want to use the NRTL model und would like to add some individual Henry coefficients. Is that possible and how?

05 August 2024 2,333 2 View

What are possible strategies can be used to analyze data under sequential explanatory mixed method approach?

Better ways to analyze the qualitative and quantitative data in a sequential explanatory mixed method approaches

04 August 2024 2,703 6 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Request for Advice: Starch Metabolism Research Project?

I am currently considering a research project focusing on a comparative analysis of starch metabolism in orchids and roses. I am particularly interested in identifying the types and quantities of...

30 July 2024 4,267 2 View

Can the limit of quantification (LOQ) of an analytical method fall outside its linear dynamic range, or must it always be within it?

Can an analytical method's limit of quantification (LOQ) be outside its linear dynamic range, or is it always required to be within it? Please provide a thorough explanation supported by verified...

29 July 2024 7,198 9 View

Where to start the Analytical model for Dry sliding wear of metal surface ?

I am doing research on wear mechanism of the additive manufactured metal parts under dry condition. Please share the reference to start the analytical modelling of the wear prediction.

29 July 2024 6,115 0 View

Markus Christ

Article A comprehensive methodology for the chiral separation of 40 ...

Soja Sitifatimah

You should be used HPLC with detector Index refraction

Michel Héry

I suggest you to have a look at European Patent EP 2 484 673 B1 that you can find for free on internet.

R.Girijan Menon

You can do this by LC with MS detection. You have to use a chiral column.

Samarth Zarad

Thank you everyone.your references helps me.

Chris Henry

SFC is also a useful tool in chiral separation...