How can make the integration of the peaks in a NMR spectrum by using the origin program?

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Why the melting entalphy of samples of PP-g-MA is different but the peaks observed by XRD are very similar, how can be explained it?

The difractograms not show a variation of the intensity of the peaks, but the melting enthalphy obtained by DSC is changing with the AM grafted into PP.

10 November 2017 5,408 4 View

Which are the new tendencies in polymer materials research?

Read 1 answer by scientists to the question asked by Edwin A. Murillo on Mar 2, 2017

02 March 2017 8,207 1 View

¿Could you please tell me who can supply me this reactive (2-(9H-Carbazol-9-yl) acetic acid?

I need to get this reactive (2-(9H-Carbazol-9-yl) acetic acid). Therefore, I am requiring some information for it. Thank you

08 September 2016 6,862 0 View

¿Why a polymer has a Tg but it has not a Tm. Aditionally, despite of it, the polymer can melt ?

By DSC analysis the polymer only shows a Tg

01 February 2016 6,105 4 View

¿Can you help me with a creep methodology to thermoplastic polymer (PP) ?

When I put the stress for a period of 600 s. After that I remove the stress, the rheometer take values of compliance or in the methodology have I add another parameter?

01 February 2016 10,026 1 View

How can I quantified the proportion of a phenol and formaldehyde employed on the synthesis of a resol?

I need to find the molar ratio of these materials in a final resol.

31 December 2015 3,854 3 View

Why one sample A presents higher complex viscosity than a sample B, but the behavior in a shear viscosity is opposite?

This behavior was exhibited by thermoplastic polymer functionalized on molten state

11 December 2015 4,339 9 View

How can I export results on a Zetasizer nanoseries (nano Z)?

I need to obtain quickly this information, but when I make clik in file and then on export results not appear the information required to obtain the plot

07 August 2015 3,525 7 View

How to solve g_mmpbsa error?

Program: g_mmpbsa, version 2024.1 Source file: extrn_apbs.cxx (line 152) Fatal error: Failed to execute command: $APBS pybYcUWA.in --output-file=pybYcUW.out

07 August 2024 6,066 0 View

What is the prepared reference material that can be used in inductively coupled plasma optical emission spectrometry (ICP-OES) to measure REE and U ?

What is the prepared reference material that can be used in the ICPE-9820 Shimadzu Japan instrument, which employs inductively coupled plasma optical emission spectrometry (ICP-OES) to measure...

06 August 2024 1,896 1 View

Could dyes amplify the spectrum of light to a specific wavelength?

I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...

05 August 2024 3,290 1 View

Melt curve problem in qPCR?

Do these peaks in the curve indicate primer dimer or non-specific products?

01 August 2024 7,466 0 View

Is artifacts in XPS possible to build high deviation in binding energy larger than 5 eV??

Hello. Thanks for your consideration to see my question. Recently, I conducted XPS anaylsis of g-CN that is prepared from thermal polycondensation of DCDA, so-called conventional bulk-g-CN,...

30 July 2024 9,824 2 View

Tips for teaching Orton Gillingham+ to students with autism?

I am beginning to use OG+ in my district and noticed during training there are a lot of materials and routines, which may be overwhelming for my students, especially those on the autism spectrum....

30 July 2024 5,695 0 View

How to improve peaks separation in HPLC?

Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...

30 July 2024 435 3 View

There is possible way to calculate experimental DOS from the UPS spectrum of the material. How to calculate the DOS from UPS?

Here, I have attached the UPS graph. I'm trying to calculate the DOS/DOVS from the UPS.

29 July 2024 4,971 1 View

Are students in the MBA program in Fisheries Enterprises Management eligible to work in the aquaculture industry abroad?

Are students in the MBA program in Fisheries Enterprises Management eligible to work in the aquaculture industry abroad? Could you explain the foreign countries interested in recruiting...

28 July 2024 8,378 2 View

How can we calculate the percentage of configuration interaction (CI) in the UV output data of the Gaussian program?

How can we calculate the percentage of configuration interaction (CI) in the UV output data of the Gaussian program? for example: Excited State 17: Singlet-A 5.1359 eV 241.41 nm...

28 July 2024 9,165 2 View