How should I choose optimized pH value if the results for pH values ranging from 3-9 are same?

I have performed the optimization of pH ranging from 2-9 so that I can choose one pH value for subsequent experiments but the results pertaining to pH values from 3-9 are almost near.How do I...

02 March 2016 9,214 5 View

Can anyone explain what is actually compressive local stress in Raman spectra?

Attached file

01 February 2016 7,294 0 View

Adsorption of Pd(II) onto graphene oxide shows optimum pH at 6.0 but GO with quaternary ammonium salt shows optimum pH around 3-4. can anyone explain?

The adsorption of Pd(II) onto graphene oxide shows optimum pH at 6.0, whereas GO with quaternary ammonium salt shows optimum pH around 3-4. Attachment for graphene oxide on Pd(II)

31 December 2015 4,138 4 View

I have done silver nitrate test to remove bromine from my sample. EDX result is fine and not showing Br peak but in XPS I get Br . Why is it so?

11 December 2015 3,436 5 View

In raman spectra, after addition of metal ion to some graphitic material, will the intensity ratio of D to G bands increase or decrease?

What does the increased/decreased intensity of ID/IG imply?

11 December 2015 1,662 2 View

In interference studies to check the extraction of Pd(II), will the metal ions such as Hg(II) and Pt interfere along with Pd(II)? If yes/no. Why?

In interference studies to check the extraction of Pd(II), will the metal ions such as Hg(II) and Pt interfere along with Pd(II)? If yes/no. Why?

11 December 2015 1,342 1 View

In interference studies to check the extraction of Pd(II), will the metal ions such as Hg(II) and Pt interfere along with Pd(II)? If yes/no. Why?

11 December 2015 872 1 View

Can Akaike's Information Criterion be used for both linear and non linear model?

11 December 2015 6,304 6 View

Can anybody tell the formula for the % recovery of metal ions in adsorption process?

If i have found the concentration of the metal ion in the filterate . Now i want to check that how much % of the metal ion is recovered.

11 December 2015 8,795 3 View

Will H2PdCl4 and PdCl42- behave in a similar fashion for an adsorption study?

10 November 2014 3,884 3 View

How two melting peaks in DSC of polypropylene can be merged into one crystallization peak?

The figure shows DSC cooling (blue) and 2nd heating (green) curves (step: 10 K/min) for a commercial sample supplied as Atactic Polypropylene (APP). The heating curve illustrates two major...

03 March 2021 5,857 3 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

What do I do with DLS peaks that are from the buffer?

I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...

01 March 2021 9,015 2 View

What information can be had from raman at higher wavenumber?

i have recorded raman spectra of strontium oxide thin film. the spectra were recorded in the range 400 to 4000 cm-1. i have reference to peaks upto 1000cm-1. but i couldn't find literature for...

26 February 2021 2,499 1 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

How can I find a Raman spectrum wavenumber corresponding to what compound?

I have several Raman spectra with very distinct peaks at certain wavenumbers, such as 277, 359, 466, 583, 623, 686, and 795cm-1. How can I identify them to what compound(s)? The RRUFF and others...

24 February 2021 363 3 View

Genescan gives 3 peaks instead of one?

Hi all, I am doing a genescan analysis for a deleted exon in the patient sample. The amplified region is 215 bp. In the patient sample because of homozygous deletion, no peak is observed while in...

23 February 2021 5,645 1 View

Why the CHi^2 is close to zero with a bad fitting but the Rp and Rwp are still high?

I am refining my XRD data using in FullProf program. The intensity of the modulated X-ray peaks is almost flat. I tried to adjust the peak intensities but unsuccessful. What is the reason? I guess...

23 February 2021 2,304 4 View

Can't recognize exact phase and PDF card no of Silicon carbide in XRD?

We have deposited silicon carbide on carbon substrate using one PVD technique. Due to amorphous behavior of SiC at low deposition temperature, we performed heat treatment of those films at...

22 February 2021 2,072 3 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View