What could be possible reason of higher Drug Concentration of Liposomal formulation stability samples over time?

Hello Everyone! I have prepared liposomal formulation using Rotary Evaporator method followed by dialyzed the liposomal Suspension in Phosphate buffer to remove the un-encapsulated drug. After...

25 January 2021 7,752 4 View

What is the advantage of DFT over tight-binding methods or vice-versa?

It might be a very basic question, but can somebody please put some light that what is the advantage of using Density Functional Theory (DFT) over tight-binding approximation or vice-...

31 August 2020 4,937 3 View

How the position of band inversion (near or away the Fermi level) affects the electrical transport and thermal properties in semi-metals?

Dear all, Can somebody please put some light on how the position of band inversion, near or away the Fermi level affects the electrical transport and thermal properties in semi-metals? Thanks in...

19 August 2020 5,202 8 View

My protein is a recombinant protein constitutively expressed in Pichia.Why am I getting a smear/ dragging of the loaded protein?

The protein (55KDa) has low contentration. It is purified via ammonium sulphate salting out and desalted with pD10 column. Will working with SDS-PAGE (10% resolving and 5% stacking), a drag is...

05 June 2019 4,216 14 View

How to perform band structure calculations with HSE + SOC in VASP?

Can Somebody please tell me that how to perform band structure calculations with HSE + spin-orbit coupling (SOC) in VASP? In normal HSE calculations, we perform SCF claculations with WAVECAR of...

07 January 2019 1,310 6 View

What is the meaning of parity of a band?

As we know, a band has partial contribution from all the orbitals of all the atoms, then how can we determine the parity of a band from these partial contributions? What is the physics involved in...

22 February 2018 5,256 8 View

Is there any theory which explains the origin of the existence of indirect band gap for a material?

As we know, Kronig Penney model explains the existence of band gap at the same 'k', i.e. direct band gap. However, there is nothing like indirect band gap in KP model. Then, how can we explain the...

02 May 2017 7,619 3 View

What are High symmetry points in a crystal?

12 February 2017 6,848 7 View

How can we include Van der waals interactions in VASP 5.3.3?

I want to consider the van-der-waal interaction between two layers of Graphene. How can we include that? I have made a POSCAR file in which i considered the unit cell of both layers and the...

01 June 2016 5,626 11 View

How to find HOMO and LUMO levels in CV Measurements?

We performed the cv measurements using Ag/AgCl as reference electrode and Pt as working electrode. The analyte was added into Orhodichoro benzene (odcb). How can we find the homo and lumo level...

07 September 2014 5,871 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

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

How to search for crystal structure for material with atomic position labelled?

I am using the crystallographic open database and materials project to search for cif file but the exact structure is not mentioned or how can I deduce that the given structure and atomic position...

23 February 2021 6,723 2 View

How to generate AA6061 alloy or any aluminium alloy crystal in material studio?

I need to carry out molecular dynamics simulation on Aluminium alloy. For this i need the crystal structure that which could be further replicated to form a structure.

22 February 2021 1,410 1 View

Build an orthogonal box in ASE?

Hello, I was wondering the best way to build an orthogonal box filled with a defined crystal structure in ASE. I know it could be easily done in LAMMPS, but I guess it is also doable in ASE. The...

21 February 2021 5,899 4 View

What is the reason film thickness increased?

what is the reason film thickness increased when increased doping concentrations give some reasons The measured film thickness is 156, 282, 394, 548 and 681 nm for 0, 1.5, 2.5, 3.5, and 4.5 wt....

17 February 2021 8,987 5 View

How can I make sure that BCTC doesn't fall out of solution/form DMSO crystals when treating cells?

I resuspended my BCTC as described on the bottle at 10mg/mL in DMSO. However, I can see the formation of crystals which I can only assume are DMSO and that the drug is precipitating out of...

14 February 2021 5,633 1 View

Is there a way to tell based on appearance which protein crystal should diffract the best?

I have had unheard of success with protein crystallography lately from a super successful protein expression and purification batch. I have attained a lately reproducible vast amount of crystals...

09 February 2021 5,155 5 View

What is the molecular size for crystal violet and reactive orange 16?

I am using methyl violet 10B and reactive orange 16 (RO16) dyes for my Ph.D. research. I'm trying to find the molecular size for both of these dyes. It is possible for me to find these dyes'...

01 February 2021 3,333 4 View