Why the nucleic acid gel melted after running for 30min?

Hi all, I proceed with nucleic acid gel electrophoresis recently several times, but a wried phenomenon is they always melted after running over 30min. My gel concentration is 1% percentage...

22 February 2021 9,896 3 View

Have any professors ever done research about the expression of fusion proteins in Drosophila S2 cells?

1. How to scale up the expression of fusion proteins? 2. How to improve the purity of fusion protein to 90%? I have tried affinity chromatography, but the purity by SDS-PAGE was not satisfied....

04 November 2019 8,479 6 View

How to calculate the active area of CNTs modified glassy carbon electrode?

"The active area of so porous electrode as the authors used could not be correctly evaluated using the Randles-SEVCIK formula. Just because the depletion layers of active places may overlap." How...

28 October 2019 1,782 3 View

Future of bioinformatic analysis in plant science ?

please share your idea regarding the future of bioinformatic analysis in plant science? recommend the preferred PC and MAC programs for the beginner ,and for the advanced users? as well as any...

24 October 2019 8,814 4 View

Bad performance of RQ-PCR standard curve constructed by plasmid

Hi guys! Recently I encountered a problem about the Albumin (ALB) standard curve which was used for normalizing my samples. The ALB standard curve was constructed by serial dilutions of plasmid...

25 July 2017 8,762 3 View

Recommendation for instrument and method to produce the macro-structure of weld joints?

Detailed information of the equipment (i.e. name, company, price, working mechanism) is highly appreciated.

08 September 2016 6,402 0 View

Where to find the definitions of thin plate, medium thick plate and thick plate?

10 November 2015 3,459 0 View

How can I get the free GIS data of China?

16 May 2015 3,254 2 View

How to prepare the solution for ternary CdSexTe(1-x) thin films??

Can anyone explain in brief how to prepare the solution for ternary CdSexTe(1-x) thin films e.g. CdSe(0.6)Te(0.4) thin film?

06 October 2014 4,718 2 View

Can anyone suggest a reference electrode for electrodeposition?

Can anyone suggest a reference electrode for electrodeposition in aqueous solution? Which one is better between a Saturated Calomel Electrode (SCE) and an Ag/AgCl reference electrode?What is the...

28 April 2014 1,889 21 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 to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View