Mahendra Singh

10 Questions 5 Answers 0 Followers

Questions related from Mahendra Singh

How to calculate the chemical potential of amorphous solids using sorption/desorption data?

Crystalline and amorphous solids have different chemical potentials. May be this is one of the reasons of higher reactivity of amorphous solids.

18 February 2019 4,430 1 View

How to calculate the paired distribution functions of amorphous solid from PXRD DATA (eva file)?

Paired distribution function (PDF) is the characteristic of amorphous solids. How we can calculate this with the PXRD data?

19 December 2018 6,459 3 View

How to extend the Gordon-Taylor equation for quaternary systems?

This equation is used to predict the glass transition temperature of systems with different components (miscibility and immiscibility). This equation have been used for binary and ternary systems....

02 November 2018 332 2 View

Can someone tel me how to determine the residual solvent in spray-dried samples?

Some times organic solvent is used in the spray drying process. how we can determine the residual solvent in spray-dried samples?

25 April 2018 7,023 3 View

How to investigate the conversion of amorphous API to its crystalline counterpart ( during the dissolution and solubility study) ?

Amorphous forms are meta-stable they have the tendency to recrystallize when they are exposed to the temperature, pressure and humidity.

21 April 2018 6,727 6 View

Does anyone know how to distinguish between the amorphous phases of different polymers (apart from the glass transition )?

Amorphous phase of every polymer has its own characteristics. how we can distinguish the different amorphous phases of different polymers.

11 March 2018 1,333 3 View

Does anyone know how to change FTIR data file (.sp) to different format?

I have my FTIR data (raw file in sp format) and i want to change this in to a format so that i can get the absorbance and peaks in txt format.

22 December 2017 2,741 9 View

Lipid based drug delivery systems: Phospholipid complexes

There are a number of lipid based drug delivery systems developed for oral as well as i.v routes. A number of researchers developed "phospholipid complexes" for oral delivery. What is the...

01 January 1970 8,547 3 View

Lipid based oral drug delivery systems: molecular level understanding.

a number of lipid based delivery systems have been explored for oral delivery (specially phospholipid complexes) of poorly soluble drugs. can someone let me know that what is the structural...

01 January 1970 8,886 3 View

Polyamorphous systems: Generation and charcterization

Crystalline state are found to show different forms (polymorphs ). Amorphous solids may also exists in different forms. Can anyone would like to share information about these systems?

01 January 1970 7,660 3 View