What mechanism is involved when chitosan is coated on magnetic nanoparticles?

Hello! I am currently working on coating of chitosan on magnetic Fe3O4 nanoparticles. I am wondering how this coating process happened? i.e. through what mechanism that chitosan can be coated on...

13 January 2021 5,657 5 View

How to reduce background noise when testing cholesterol level in rat serum?

l've got rat serum samples with different background (from pink to yellow) and l'm trying to test total cholesterol, HDL and triglyceride in mice serum. l'm worried that the background noise...

14 November 2020 6,628 3 View

Is rotary evaporator a must before going through TPC, TFC and DPPH assay?

I am doing an optimization of ginger extract using doe software, firstly I extract the ground ginger with 20ml solvents of 60%, 70% and 80% ethanol using the ultrasound water bath in different...

23 October 2020 3,268 10 View

Failure in using Gene Pulser Xcell (Biorad) ?

02 October 2020 8,642 1 View

How to make the peak fitting better in TOPAS Rieltveld Refinement ?

Hi I am doing TOPAS Rieltveld Refinement by JEdit on PbTiO3-based perovskite solid solution found that my peak fitting is not that good. I got Rwp 4.584%, Rexp 0.825%, Rp 2.780, and GOF 5.560....

01 October 2020 1,981 5 View

How to quickly know the new research area landscape and find a research gap in this new area?

As a Ph.D. candidate who enters a new research area that differs from the research topic in the master period (e.g. shift form crop breeding to soil ecology), how to quickly know the new research...

23 September 2020 8,131 5 View

Is construction or real estate sector a pillar industry of the national economy?

Is construction or real estate sector a pillar industry of the national economy? The Chinese government once declared real estate sector as a pillar industry of the national economy in 2003. And...

02 July 2020 1,085 2 View

HEK-293t cell detach but still alive during killing curve set up?

Hi there, I'm trying to build a killing curve for HEK-293T towards hygromycin B for the following transfection experiment. I plated the cell at 1.3X10^5 cell/well in the 24 well plates the night...

30 June 2020 7,368 1 View

DNA absorbance test on SpectraMax Microplate Reader, why A260/A280 false?

Hi guys. Here is the problem: Using an SpectraMax Microplate Reader for DNA absorbance test, there is one problem that the A260/A280 is always wrong, sometimes half plate wrong and sometime,...

29 March 2020 5,972 3 View

What do chitosan-coated nanoparticles look like?

Hello! It is my first time to try to coat chitosan onto Fe3O4 nanoparticles. I am wondering what form of the chitosan-coated iron nanoparticles I should expect? After washing and drying, should...

28 January 2020 6,418 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

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02 March 2021 3,060 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

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

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28 February 2021 9,936 2 View