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Questions related from Sabry Abdallah
I could get nanoparticles by using a physical method, but because of that method we get different sized molecules and we may not reach the nanometer size on time. How can I determine the size of...
02 February 2019 7,380 20 View
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?
02 February 2019 8,554 3 View
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...
01 January 2019 8,775 4 View
Is there any research papers about increasing the sensitivity of spectrophotometric methods by increasing the length of the optical path?
01 January 2019 4,251 1 View
The eyes can estimate the concentration of a solution roughly. Through three receptors of colors. Can we estimate the concentration of a substance by measuring its absorption at 3 wavelengths,...
01 January 2019 3,574 3 View
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?
05 May 2018 6,208 7 View
White mice are characterized by rapid reproduction and rapid growth. Can their meat be used in food industry experiments?
05 May 2018 7,527 5 View
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...
05 May 2018 2,615 0 View
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?
03 March 2018 1,651 4 View
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...
03 March 2018 4,232 0 View
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
01 January 2018 4,902 17 View
In Siwa Oasis there are many wells and we want to know whether the water is renewable and what is the source of the water : from the Nile or the water coming from the rain on the Sudan or is...
01 January 2018 1,656 16 View
When there are extraordinary big or small series/points in source data, the small series/points will not be precise enough in the chart. In these cases, we want to break the axis, and make both...
12 December 2017 5,006 4 View
I want to study the mixing of the synthetic pesticides with the plant extracts. Are there any laws that limit or regulate the use of these mixtures?
11 November 2017 4,266 4 View
When estimating the acute toxicity of some plant extracts, the activity of alkaline phosphatase may decrease. why?
11 November 2017 8,256 2 View
In liver hepatoprotective studies, we use many animals and we incur high financial costs. Can we use ovo in the experiments of evaluating the efficacy of plant extracts in protecting the liver by...
10 October 2017 901 3 View
We want to evaluate the biological efficacy of some plant extracts against cancer and we want to reduce costs. Can we develop cancer cells in eggs and measure the effectiveness of that plant...
10 October 2017 9,435 2 View
some time -in our research on hepato-protective activity of some plant extracts- we found a dead mice can we contact a histological studies on it.
09 September 2017 7,005 1 View
I was estimating The LD50 for some plant extracts by using (Lorke 1983) method, where, i had administrate 10, 100, 1000 mg/kg as single oral dose to the mice and have No mortality. can we make...
09 September 2017 9,838 1 View
In toxicological experiments, experimental animals die and we can not know the cause of death. Are there certain signs of autopsy indicating the cause of death?
09 September 2017 1,533 3 View
we have some experiment about "hepatoprotective effect of some plant extract on mice" and we need to measure the mice blood pressure .
01 January 1970 4,337 3 View
The computer is one of the greatest achievements of humanity in modern times. How can the computer be used to increase agricultural productivity and what programs can the farmer use? I teach a...
01 January 1970 4,315 14 View
Google Maps has a great deal of knowledge. how we can use it in scientific research
01 January 1970 9,321 5 View
