How can we calculate the concentration of nanoparticles in a solution ?

1- Absorption of 1 cc of a nm solution of 20 gold particles at 530 nm equals one. Calculate the extinction coefficient of these nanoparticles (consider the light path length of 1 cm). If we were...

30 November 2020 9,274 1 View

How can i collect many blood sample from the rat for pharmacokinetic study without killing the rat??

how can i collect many blood sample from the rat for pharmacokinetic study without killing the rat??

28 October 2020 2,675 8 View

What's the effects of the wet season and dry season on biological soil crusts specially algae (Cyanobacteria and green algae)?

I work the research about stabilization of soil by Biological soil crust especially algae (Cyanobacteria and green algae) Could anyone please help me about this topic soil stabilization using...

17 December 2019 8,682 3 View

No title

04 November 2019 7,867 3 View

Is there researches about "Bearingless Brushless DC motor" that explain the magnetic forces needed for the suspension?

I need researches about "Bearingless Brushless DC motor" about the magnetic forces and the displacement of the rotor that will be measured by hall sensors,,,I am trying to build a matlab...

14 January 2019 1,062 2 View

simulate a brushless dc motor open loop with ?

HI I am trying to simulate an open loop brushless dc motor ,but although Ive followed the exact equations, the results are unacceptable please Ive attached the matlab simulation if any one have...

03 January 2019 6,419 1 View

What are the best mobile phases to identify phenolic acids in ethanolic plant extract ?

Im searching about mobile phases , using thin layer chromatography, for identification of flavonoids and phenolic acids for my research. thank you

30 November 2018 8,197 3 View

Is there a difference in performance and in results when run CFD software on a laptop with Nvidia Quadro graphic card as compared to Nvidia Geforce?

I am inquiring about the best laptop features to run CFD software efficiently so that I get the minimum time of run and the best visual results. Any valuable recommendations are welcomed!

15 August 2018 8,802 5 View

What are the biological factors that affect on erosion in soil ?

There are many microflora in soil such as bacteria, algae and fungi that affect soil properties Are the bacteria present in the soil affecting soil erosion and physical and chemical properties...

12 February 2018 1,294 9 View

What the role of organic matter to plants under salt stress?

organic matter rolling under salt stress

13 December 2017 1,275 13 View

SDS page software for analysis?

I did sds page to determine the difference in protein expression between 3 types of vaccine , but i don't have scanner or densitometer available. . so i wonder if there is a software to analyze...

02 March 2021 6,270 3 View

Which of the Covid-19 Vaccines would elicit the best immunoprotection and why?

I want to know which of the available Covid-19 Vaccines would elicit the best immunological response and why

02 March 2021 1,388 3 View

Is the sinovac vaccine safe and effective for people over the age of 60 ?

Dear respective researchers, I was asked by my institution to be vaccinated this week using the sinovac vaccine. However, from some of the information I got, this vaccine is not recommended for...

01 March 2021 7,781 6 View

How vaccines of covid 19 work?

Millions ask how vaccines of covid 19 be successful and safe, its here to explain generally how vaccine of pfizer work ,mRNA vaccines teach our cells how to make a protein that will trigger an...

28 February 2021 2,723 4 View

Where can I find public datasets with Covid-19 patient information?

Hi, I'm looking for public datasets that have CT, X-ray information, or medical records for patients with Covid-19. Does anyone have suggestions?

28 February 2021 4,760 3 View

Is there any published or unpublished statistics on dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, US, UK or any other country?

Are there any published or unpublished statistics or papers on the dropout rate (Dose1 to Dose-2) for Covid-19 vaccination in India, USA, UK, or any other country where vaccination has started at...

28 February 2021 4,237 1 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

If a given country passes mandatory 'vaccine passport rule' to go outdoors, otherwise stay at home, can it help to vaccinate all against COVID-19?

Wether vaccine passport declared not to go out of home without it may help taking COVID-19 vaccine. Can't it break individual's right to protect the community? Your comments on perspectives...

27 February 2021 5,549 23 View

How long do vaccines protect us against COVID 19?

Or will we have to get vaccinated every year, as in the case of influenza?

27 February 2021 1,048 5 View

What are the patterns of human behavior that lead to COVID-19 infections?

Does data from contact tracing help in establishing patterns of behavior and social interactions that lead to infections? There are cases here in the Philippines where patients have no travel...

25 February 2021 9,002 13 View