How can i separate Quantum dots by size instead of Chromatography and Dialysis Bag Method ?

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How to interpret multiple bell shaped curves in Kratky plot?

Hi, I'm trying to analyze a Kratky plot generated from my SAXS data. I am seeing multiple bell-shaped curves in my Kratky plot and I am not able to find any source to get relevant info on this...

20 January 2021 2,474 1 View

Lift off problem with Indium/Gold deposition?

Hi, I'm doing 5/40nm In/Au e-beam evaporation at rates 0.2A/s(for In),1A/s(Au) on lithographically(doubly coated 495k,950k PMMA e-beam resist) done Si substrate at base pressure 2e-6torr. I'm...

18 January 2021 7,550 4 View

How to Import .inp file from abaqus CAE to Ansys perfectly?

I am trying to import an Abaqus .inp file to Ansys but it does not import the whole assembly but only imports a single part. How to solve this.

17 January 2021 5,450 3 View

Can I know the reason for these non specific bands?

a PCR and gel electrophoresis was carried out to obtain the results. they are negative jak2 v617f samples (ref genome - NG_009904 )

13 January 2021 7,658 4 View

Which third party CFD Codes can be used for FSI Co-Simulation in Abaqus ?

Since Abaqus CFD is no longer available in newer versions what are other available codes for Fluid-Structure Interaction Simulation

11 January 2021 2,012 3 View

How to determine Viscoelastic and Hyper Elastic Material Properties for Abaqus by mechanical testing ?

I am studying about Impact load resistance property of Polyurea (Elastomer). With respect to this, I need to conduct tests on this material to evaluate its material model behavior as a...

29 December 2020 2,969 1 View

How to remove rotation along z-axis and shift the origin to body's center?

I have attached the files with this post to explain me how to remove rotation and center the origin at the body's local coordinate. This is just one sample and I have 1000s of files like this. I...

18 December 2020 3,838 3 View

Reason for growth of fungus/mould in hydrothermal liquifaction filtered product of cellulose-based materials?

Performed hydrothermal liquefaction of cellulose powder, at about 200 degrees for 10 16 hours. After simple filtration, I stored filtered product at room temperature for 4-6 days, there is the...

03 December 2020 7,327 3 View

Is Coefficient of Variability (CV) positively correlated with root mean squared error (RMSE) in every case??

My data for fungicide treated replication shows higher RMSE and R-square but less CV compared to the untreated replication for a regression between vegetation indices and yield. How correct is it?...

23 November 2020 2,079 6 View

Fuel Cell not working after charging?

I am making an electric fuel-cell car using platinum as an electrode and sodium hydroxide as an electrolyte. I tried both series and parallel connection to charging it, Even after charging 2...

17 November 2020 2,860 9 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 1 View

Any easy method of analyzing vitamin D in foods by HPLC?

Looking for method of extracting and analyzing vitamin D in foods by HPLC

24 February 2021 7,524 7 View

What HPLC Marker(s) should be used to detect anthocyanins in a sample?

What HPLC Marker(s) or standard is used to detect and quantify anthocyanins such as Delphinidin, Cyanidin in a given sample of plant extract?

23 February 2021 1,832 4 View

HPLC baseline failure (ACN/Water)?

My baseline increases without any explanation, it is only fixed by changing the solution B, will it be the column? Reagents? Bomb? Detector? Solution A: H3PO4 0.01% IN WATER Solution B: H3PO4...

21 February 2021 5,656 3 View

Which vial septa the right one to be used for HPLC?

This is the unanswered question stored very long in my mind and till now I could not find a right answer. Google search educated me that the red surface is the PTFE material compatible to wider...

21 February 2021 546 3 View

What is the stability of 2 3-dihydroxyquinoxaline in acidic water?

I'm developing a UHPLC assay, and the fluorescent product is 2,3-dihydroxyquinoxaline. The reaction to produce this requires hydrochloric acid (about 1.2 M). Will storage in this acidic...

20 February 2021 5,820 4 View