Yasir Iqbal

20 Questions 24 Answers 0 Followers

Questions related from Yasir Iqbal

How to reply to the reviewer comment " add JCPDS number and crystalline size" as i work on natural polysaccharides and their modifications, ?

Hi, I work on natural polymers i.e. gums polysaccharides. the pure materials are normally amorphous , i did a modification on a base material and its xrd showed an improvement and showed a broad...

11 July 2023 4,467 2 View

Can you provide the names of commercially available nanotechnology based products ?

Hi, I am searching for commercially available nanotechnology based products i.e. in food, agriculture, packaging, health and textile. Thank you

13 March 2023 7,751 17 View

Can I use normal saline as solvent for my polysaccharide samples to perform antimicrobial activity?

Hi, I have natural polysaccharides and their modified derivatives. I want to test them for antibacterial activity but some of samples are too viscous at 10mg/ml that they don't get into the tip of...

11 December 2021 7,692 7 View

How to determine the antibacterial activity of Hydrogel sample preparations ?

I have prepared hydrogels , I want to determine antibacterial activity. Should I use them In gel form ? or I have also in solid dried powder form. What is the way of sample preparation form them...

11 July 2021 3,386 3 View

What is Role and application of Size exclusion chromatography in Forensic science?

Please anyone tell me that how size exclusion chromatography is used in forensic science i.e. what type of analysis are carried out using this technique in forensics?

30 June 2018 8,071 3 View

Please refer me any reproducible Green synthesis method for ZnO nanoparticles ?

I'm searching a reproducible method for green synthesis of ZnO nanoparticles by using plant extract as reducing agent which yield solid particles in quantity 1gm,

15 February 2018 3,175 5 View

What are some other certifcations, courses that are useful while pursing Phd in chemistry?

I want to ask about courses, certifications or something like that is useful along with PhD in chemistry for personal development and knowledge building as well as those which are helpful in...

27 December 2017 479 2 View

Identify elements Given in the EDX spectra?

Due to narrow peaks I can't see the elements mentioned in starting peaks of spectra. Help me read the spectra just to remove doubts ! Comment below.

19 December 2017 126 7 View

Can anyone help how to make comaprsion graphs of XRD any software?

I want to make the comparison graph for XRD analysis As like given in picture that i have uploaded. Kindly tell me a simple way or an easy software to compute my results like this or better ! thanks

25 September 2017 4,266 10 View

Can anyone tell me that the base peaks at 55 and 95 what will be the structure of fargment and what do they represent?

the figure show the gc-ms of essentail oil extracted from the seeds and leaves of plant. Guide me how to explain this especially base peak 55 and 97 what do they represent ?ot tell me how to...

27 August 2017 2,342 7 View

How to explain the results of zeta particle size and zeta potential ??

I am having trouble in explaning results zeta size have only one peak at 139.7 nm with 100% intensity then why zeta average size is 166nm if 139.7 is with 100% intensity with s.d 32..In zeta...

24 July 2017 5,028 3 View

How do I calculate the value of superoxide dismutase and peroxide from their absorbance values obtained?

I carried out the superoxide activity SOD as per protocol and took reading at 560nm on spectrophotometer and similarly took absorbance of POD at 470nm. Now how to calculate SOD and POD values from...

02 July 2017 9,795 2 View

What is the UV-Visible spectrum range for silver nanoparticles?

i.e In which wavelength range the lambda max of silver nanoparticles must fall either they are produced form any method !

27 November 2016 3,915 9 View

I want to find out the molecular weight of ( natural polymer) using zeta sizer, How can I do that ?

I have DLS zeta sizer available using zeta sizer I want to estimate the molecular weight of my polymer, please tell me an efficient and easy way. I have read a little on some websites that it is...

01 January 1970 8,811 3 View

What are some best books on analytical chemistry?

1.Looking for easy comprehensive and authentic books on analytical chemistry I am already using G.D christian Harris Quantitative chemical analysis Skoog and west I just want to explore some...

01 January 1970 8,972 8 View

Who was the first to give the concept of nanotechnology? Richard Feynman or prof. Norio Taniguchi ?

Actually im bit confused who the one who gave the concept of nanotechnology for the first time...

01 January 1970 6,291 7 View

I gave my ssmple of Ag nanoparticle to a Lab for XRD they scanned my sample upto 60 theta and i got only 2 peaks, is it ok?

Actually my Silver nanoparticle sample was scanned upto 60theta and in that region it gave 2 peaks as reported previously in literature but in almost all literature there are atleast 3 peaks for...

01 January 1970 8,016 5 View

Can I directly run Hexane fraction of plant extract for GC-MS without derivatization?

Hi, I did fractionation of my crude methanolic extract and got a hexane fraction strating from non polar to polar. I dried hexance fraction weighed 100mg out of it and resuspened in Hexane added a...

01 January 1970 5,671 6 View

What characterizations are crucial for a hydrogel (in-situ semi solid hydrogel)?

Hi, Experts and Scientists I want to ask what the main characterizations you need to do for hydrogel based on natural polymer ( polymer - metal hydrogel or polymer -metal -polymer).

01 January 1970 1,887 3 View

Hi, I did the XRD of SA powder by D8 Bruker , But the peaks are very sharp why is that?

I did xrd of Sodium alginate powder but received this spectra , is it possible for Sodium alginate to give this spectra ?

01 January 1970 9,585 5 View