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

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

In X-ray diffraction (XRD), how can we relate crystallinity index, crystallite size and particle size?

06 July 2014 738 7 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 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

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 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

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View