Parham Akhlaghi

9 Questions 9 Answers 0 Followers

Questions related from Parham Akhlaghi

Is it normal for an ointment formulation to become liquid in stability chamber (T=40 C, H=60 %)?

Dear all, My formulation contains almost 30% of vaseline and 8% yellow beeswax + APIs and other ingredients. The thickness of ointment in room temperature is acceptable, while in stability chamber...

05 January 2022 4,213 3 View

How to prevent methyl salicylate from hydrolysis in an ointment formulation?

Dear all, GC analysis revealed the presence of 7.62% methyle salicylate in the final formulation of my ointment, while the initial w/w of MS was 14%. Where it has gone?? If it is because of...

05 January 2022 3,927 7 View

Matlab Problem! Please Help?

Hi I would really appreciate if someone helps me out with this MATLAB problem. I have uploaded both MATLAB file (which is not working properly) and the question. Thank you very much in advance #MATLAB

04 January 2021 6,721 3 View

What is your suggestion for evaluating the antibacterial properties of a thin layer nanofiber mat, formed on an aluminium collector?

Hi We've synthesized a thin layer of a nanofiber mat using an electrospinning technique. It is almost impossible to separate the formed layer from the aluminium foil collector. On the other hand,...

04 February 2018 3,373 2 View

What is the procedure of know-how (technological knowledge) valuation in pharmaceutical industry?

Hi Is there any specific procedure for know-how valuation in pharmaceutical industry? If not, what are the general guidelines and procedures? What are the references where I can find the...

31 October 2017 2,693 3 View

What are the appropriate polymer (Chitosan/PVA/PEO) concentrations?

Hi We're just trying to fabricate PVA/Chitosan & PEO/Chitosan electrospun fibers. The used solutions were: Chitosan Solution:1wt% chitosan in 5% v/v glacial acetic acid PVA Solution:5wt% PVA...

23 July 2017 3,712 2 View

What are the alternatives for electrospinning (Chitosan/PVA/PEO)

What are the alternatives for electrospinning in synthesizing of an antibacterial agent using Chitosan/ PEO/ PVA precursors, regardless the form of the final product (fiber, hydrogel, film,...

18 June 2017 7,842 3 View

What is the wavelength which is corresponding to band gap energy?

Hi I have calculated the band gap of my visible-active photocatalyst using tauc's method. The calculated band gap was 2.86. According to the following equation, I have calculated the wavelength...

31 August 2014 9,086 10 View

Can anyone help with the preparation of 0.4 M Acetate Buffer Solution, pH 3?

Dear all, I want to prepare a 0.4 M Acetate Buffer Solution with pH=3.0. I don't know what the appropriate amount of acetic acid and sodium acetate are. How can I adjust the pH? Thank you very...

27 July 2014 4,730 18 View