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

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

What does Servant Leadership mean today and in the future? What are the advantages and disadvantages?

In current time of many changes in business and world of work, a lot is said and reported about the importance, skills and benefits of leadership. Are soft skills becoming more and more important?...

02 March 2021 8,149 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

Has anyone used deep learning for 2D/3D REGISTRATION ?

I am a Master student in Biomedical (Bio-electrical) Engineering and work on " 2D-3D registration ( CT and X-Ray) as my thesis. I created DRR from CT and want use CNN( Convolutional Neural...

19 February 2021 6,354 3 View

What type of pressure sensor are usually used in microfluidics?

My team is designing a dual channel microfluidic chip that runs air and water. I think we've decided on the NE1000 syringe pump for it's versatility and feedback control. We will be ordering the...

18 February 2021 9,928 2 View