How can I identify the size of nanoparticles without the use of electron microscopy?

01 February 2019 7,263 20 View

How can I separate the different sizes of nanoparticles?

I could get nanoparticles by using a physical method, but because of that method we get different sized molecules. How can I separate the different sizes of nanoparticles?

01 February 2019 8,452 3 View

Is there a simple test we can perform to ensure that we get nanoparticles?

There are many methods we can make to ensure that the compound becomes in the size of the nanoparticles, most based on devices such as transmission electron microscopy (TEM). Which are not...

31 December 2018 8,683 4 View

The sensitivity of spectrophotometric methods depends on the length of the optical path. How can we increase the optical path length in the sample?

Is there any research papers about increasing the sensitivity of spectrophotometric methods by increasing the length of the optical path?

31 December 2018 4,128 1 View

I want to produce an inbred mice strain to use in toxicity tests. What qualities should be chosen? And How to do that?

In Egypt, there is a lack of pure strains of experimental mice. How can I produce a pure strain? What are the tests that confirm obtaining a pure strain? After how many generations to get a pure...

04 May 2018 2,530 0 View

Can we feed on white rat meat?

White mice are characterized by rapid reproduction and rapid growth. Can their meat be used in food industry experiments?

04 May 2018 7,421 5 View

How can I get solar cells in the form of a hollow cylinder?

I want to study the effect of temperature on the efficiency of solar cells. So, I needed solar cells in the form of a hollow cylinder to run a stream of water in it. How can I get it and from where?

04 May 2018 6,105 7 View

How can I evaluate the selectivity of some pesticides?

I want to evaluate some fungicides on some fungus as well as some fungus and bacteria used to biological control of this fungus. How can I evaluate the selectivity of these pesticides?

02 March 2018 1,554 4 View

What is the best free program to correct grammatical and linguistic for the English language?

Since my native language is Arabic, I find difficult to review the linguistic and grammatical errors of my English language. So I want a free program to correct the language and grammar for the...

02 March 2018 4,138 0 View

How can I know the source of water in a well?

In Siwa Oasis there are many wells. We want to know the source of water that feeds these wells Is this possible through isotopes for example

31 December 2017 4,794 17 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

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

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

How do I transfect a large plasmid into PC12 cells with nerve growth factor (NGF) receptor?

I have a large 16 kb plasmid, which I need to transfect into PC12 cells. Lipofectamin 2000 didn't work and with GFP alone the transfection rate is very low. I also tried the neon invitrogen...

25 February 2021 6,635 5 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

Alternative to mediation analysis?

I am currently working on my dissertation and want to explore the role of competence as a mediator between the effect of colour of clothes on voting intention (focus on Western countries)....

21 February 2021 8,609 1 View

Color of spiro-ometad film?

What does the color of a spiro-ometad film indicate? I got purple, green, red, even black color of the spiro film. Is there anything we can get from the preliminary color analysis(e.g. oxidation...

21 February 2021 1,831 4 View

How T cells recognise non-peptide antigens?

This might sound very basic question, but please share with me an explanation of how the T cell is activated when the antigen is not a peptide? What happens? And what are the molecules involved in...

21 February 2021 564 3 View