Is down draft tower technology efficient in power production and how ?

updraft tower solar chimney is good for electrical power product what about down draft .

31 December 2016 6,177 6 View

How can avoid aircraft accidents and save the passengers and aircraft's crash?

31 December 2016 4,582 11 View

Is it good use the soil to cool spaces in hot climate ?

31 December 2016 7,659 10 View

Why the ocean and sea water is salted ?

31 December 2016 1,342 6 View

What is minumum speed of hot air in the solar tower power plant to get electricity power from it ?

11 December 2016 2,514 7 View

In which factor that solar pond depend to get good efficiency to area of the pond or solar intensity or degree of salt in its water ?

solar pond good device to get heat energy which stored in its salted water .

11 December 2016 2,253 2 View

Which is best to solar tower power plant increase collector area to get much sun energy or lengthening height of the chimney ?

11 December 2016 5,273 3 View

If there is use by using solar energy for space cool ?

11 December 2016 3,299 5 View

Which is best to vehicle s fiber glass body or metal body ?

11 December 2016 3,746 17 View

In which way we can use the solar pond ,and if it s effective in space heating process and how ?

11 December 2016 9,139 10 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

What is Nano technology with coronavirus helpe the human..and is it nano mterals removal of covid19?

I anwar by adsorption or reaction ..but it is either more method...

02 March 2021 4,811 2 View

How to compare different concentrations of nanoparticles for characterization from ICP-MS?

I took measurements of different concentrations of 15 nm and 5 nm Au nano particle solutions. I'm trying to determine which concentration I measured gives the best reading overall. I also...

02 March 2021 7,626 1 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

Trouble with Charting with Google Earth Engine (Technical)?

Hello. I have a problem with the charting in google earth engine. I created an image collection by combining 5 image collections of five parameters and using ee.Join.inner ( ) and .apply ( )...

26 February 2021 7,084 2 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Zno nano particles colour changed from white to grey in process of calcination any suggestions?

In the formation of Zno nano particles process, after drying at 120 degree C, my zno nano particles are completely white but when i calcine it for 450 degree C it converts into grey colour. i...

26 February 2021 2,435 4 View

Do you kow of any database containing data on retention time, log P and polarizability for a large number of molecules?

Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...

24 February 2021 2,602 1 View

Any easy method of analyzing vitamin D in foods by HPLC?

Looking for method of extracting and analyzing vitamin D in foods by HPLC

24 February 2021 7,524 7 View