How do I sample Virtual Community members in a specific location?

I want to sample virtual community members in a city for an academic research in travel behaviour. What sampling technique works? I want to use a questionnaire and a travel diary to collect data....

30 November 2019 9,538 3 View

Are there researchers interested in doing a multi country study on incivility in nursing education?

09 January 2019 8,708 62 View

Are there researchers interested in doing a multi country study on incivility in nursing education?

31 December 2018 3,143 61 View

Please, I want to know what is happening to my agarose.

01 August 2017 5,978 3 View

Is it wrong to use HCl or NaoH to adjust the pH of buffers?

Does it have any effect on biological specimen?

29 July 2017 1,995 1 View

Please someone should help me with this. I am running a restriction digestion. The bands are very faint and there are no smears. what can I do?

The digest constitution are as follows: water - 6.5 microlitre buffer- 1 microlitre enzyme - 0.5 microlitre PCR product - 2 microlitre

30 May 2017 2,029 5 View

What effects do TiO2 nanoparticles have on DNA methylation of HeLa cells?

I recently did a plate reader assay experiment to determine the effect of TiO2 nanoparticles on HeLa cells. My results showed that there was no changes in methylation the between my control and...

01 May 2017 2,782 1 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

How can Gamma Ray API units be converted to CPS (counts per second)?

Oil and gas companies run gamma ray tool and take readings in API units while Gamma ray is also noted in cps, so how these units can be converted into each other?

24 February 2021 7,545 2 View

How to remove compound ( Europium complex ) from paraffin oil?

How can I remove my compound from paraffin oil? Mistakenly my compound fell in an oil. Compound = Europium complex

22 February 2021 5,667 2 View

When I mix oil and NaOH solution, Why solid layer in the surface is formed?

During my trial for lubricant oil re-refinery process, I use NaOH as coagulant agent. After overnight of gravity settling, a solid layer in the surface was form. what product is that? since the...

22 February 2021 2,116 4 View

The type of filter paper used to filter an epoxidized oil (the mixture is an epoxidized oil with magnesium sulfate) ?

I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use

21 February 2021 3,944 3 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How can we study the adsorption efficiency of microgel at the oil-water interface?

I am studing the mircogel at oil-water interface. I want to know the adsorb amount of microgel at the oil water interface. How we can determine this amount?. I will highly appreciate your...

19 February 2021 2,787 1 View

Does anyone know, can i do cryosectioning of whole aorta after oil red O staining and use the cryosection parts for further analysis?

I would like to quantify the lesions on aorta. I want to take image of atherosclerotic plaques formation in aorta by using O red Oil Solution. After the staining, what will be the storage...

16 February 2021 5,876 2 View

Can any one explain why the ethyl ester Biodiesel (FAEE) has higher than that of the metyl ester FAME- both of them are derived from the same oil?

Biodiesels derived from waste vegetable oil transesterification with Ethanol (FAEE) show higher peroxide values than those derived by transesterification with methanol (FAME) prepared under the...

13 February 2021 193 6 View