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

How to control the variants vof covid 19 in second and third waves?

A the world find means to control covid 19 by vaccination ,new variants came to spread and make the world in fear and danger, to understand the conduct of these variants, es constantly change...

21 February 2021 3,080 6 View

How seniors face covid 19 without fear?

Seniors in the world with diabetics and hypertension and heart diseases are millions ,and they are facing covid.therefore we should give them advices and precausions to face covid 19,this...

26 January 2021 8,349 4 View

How the WHO reacted with covid -19in 2021?

Who is now working very hard with return of America to its active membershipnow WHO is concentrating on vaccinations,here are some activities, provides summary tables of COVID-19 vaccine...

20 January 2021 9,593 8 View

What are the indications of covid 19 vaccines of harmor side effec?

Millions in the world asking vwhat happened if taken vaccine of vcovid 19 ,and many want emphasis and proofs that this vaccine is safe, yes. The COVID-19 vaccines created by Pfizer and Moderna do...

02 January 2021 2,750 7 View

Do we become better with vaccination from covid in 2021?

We hope to recover, and the economy improved by using vaccination .and vaccines is needed. The vaccine will protect you from getting ill and then ending up hospitalized. But it's possible that...

02 January 2021 4,194 4 View

What is the new in new year 2021?

2020is finished and was very hard for millions now how to welcome new year.now what is our wishes in new year e year 2020 has been an unpredictable ride through the pandemic, protests and many...

01 January 2021 1,200 5 View

What happened if you get covid vaccine?

Millions in the world seeking immunity against covid 19, we hope that when taken vaccine ,we activate our immunity and our memory cells will learn how to fight covid 19 if it comes to our...

23 December 2020 8,201 5 View

How can we convince peoples to get covid vaccines?

After one year we are now getting vaccines of covid 19but millions want to take it and others are afraid of any harm so how to convince millions to take it.According to FDA ,the comittee...

14 December 2020 852 4 View

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As millions are getting depressed losing health and job and loniliness ,anew hope is begining to build up.really we need to this encouragement.we need all hygene ,distant physically to immune...

12 November 2020 159 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Can water be extracted from Olivine?

I have always been interested in geology and wondered about how unique structures of materials behave in different circumstances. I stumbled upon Olivine, the magnesium iron silicate, and heard...

28 February 2021 7,330 4 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

How to delaminate copper in water-based anodes?

Hello everyone, I'm looking for a way to delaminate copper current collector of water-based anodes in Li-ion batteries without damaging the graphite film. I tried different materials such as HNO3...

24 February 2021 3,785 3 View

What is the detection limit of ED-XRF technique for transition metals in silicon ?

Hi everybody, please, can someone tell us if the transition metals (W, Fe, Ni, etc ...) in silicon destined for solar cell manufacturing can be detected by ED-XRF technique. Note that the...

18 February 2021 6,231 4 View

Passivation of chromium cast Iron in high temperature?

14 February 2021 2,157 3 View

Why ICP-MS test for Teflon filters that collected PM2.5, show really high results in the millions of ug/g ?

I analyzed soil and ash samples using ICP-MS for 28 metals, then I resuspended those samples to collect PM2.5 particles in a filter using a selective inlet inlet. My only issue that Fe and Al...

13 February 2021 7,592 3 View

How to interpret different leached phases of metapelites?

Extraction of three different phases of metapelites, mostly phyllites as the Carbonate phase, Fe-Mn Phase, and Silicate phase has been obtained. After doing ICPMS, different results have evolved....

11 February 2021 5,198 10 View

How to modify micro-structure of Pure Copper which is available as a flat plate of 25 X 25 sq. cm?

Hi everyone, for a thesis project I have to modify the micro-structural properties of pure Cu flat plate of dimension 25 X 25 sq. cm . As I tried searching the available literature, I found a lot...

09 February 2021 5,090 3 View

How can I take subsamples of water from a larger sample in a way that allows me to measure the iron content of the subsample?

I learned how to take subsamples with a magnetic stir bar, but I noticed iron particles stick to the bar, and I am having trouble finding a standard method to solve that problem. How can I take a...

04 February 2021 4,778 1 View