PEG coated Fe3O4 nanoparticles in aqueous NH3?

Hello, I synthesized PEG coated Fe3O4 nanoparticles by coprecipitation methods and I would like to ask whether they can be dispersed in aqueous NH3 since they have a PEG coating and theoretically...

06 February 2021 5,217 4 View

Is there such a function? Is it unique?

21 January 2021 8,962 13 View

What are the current developments in terms research and publications in anthropology in general and social anthropology in particular?

I am interested in examples of anthropological methods that have been applied across different disciplines, for exmple in mathematics education.

20 January 2021 3,090 3 View

How did the tests or exams get to Latin America, specifically the written tests?

I am looking for some bibliographic references that explain how tests or exams (measurement and assessment in education) came to Latin America, specifically written tests. I would like to know if...

13 January 2021 8,607 0 View

Is this true for all values c > 0?

25 December 2020 3,621 45 View

Can children from 1 year old to 15 years be given MODANA and Pfizer Anti-COVID-19 vaccine?

The clinical disease of COVID-19 has been low in children generally and vaccine has been develop.Any evidence of its safety,efficacy and risk for allergy in children? any exemption for children...

23 December 2020 7,177 12 View

Can large samples be stored at -20 degrees prior to RNA extraction?

As part of a Covid project we are sampling urban rodents and performing RNA extractions and serology work. We have too many samples to store at -80 and have opted to perform extractions the same...

15 December 2020 5,252 2 View

Substrate functionalization and antibody deposition for biosensor work?

Hello, I am a bio student working in a lab on his free time and I just started working with an engineering group on sensors. My questions are: 1)Functionalization steps and what are the best...

21 November 2020 7,996 2 View

Why am I seeing RED fluorescence in control non transgenic plants?

Hi experts, I have cloned the DsRED gene into a plant vector under 35S promoter and used it for direct seed transformation of Chenopodium quinoa. When I checked the potential transformed...

24 October 2020 4,775 3 View

Do you think there are any prospects for hydrogen as an alternative to natural gas when operating a gas turbine?

At the moment it is very expensive, the price of 1 kg of hydrogen is from $ 2-5. Are there any prospects for green hydrogen? or will we extract hydrogen from gas? what promising technologies can...

19 October 2020 1,954 7 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 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

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

Modeling viscosity using model of Chung?

Hello, As part of simulation of gases mixture and water, I need to calculate viscosity of the fluid components and I am using relationships proposed by Chung et al. (1988). The irony is while I...

25 February 2021 8,053 5 View