What is the difference between silica sand in powder form and commercial silica?
I am not completely sure what you mean by silica sand. If it is natural silica sand, it is in the form of the mineral quartz (which is crystalline), while commercial silica is amorphous.
i need any question that is related to the special need education or the people special need (exceptional children)
25 January 2021 7,851 6 View
29 November 2020 5,284 6 View
Hi everyone, I have been having a bit of a hard time finding data on phase change material, like Paraffin, salt hydrates, fatty acids... on the scale of 100s to 1000s. The big repositories only...
28 June 2020 290 3 View
Does insect such as flies and mosquitoes transmit the COVID-19 virus as a mechanical transmission? Virus transmission take place by insect legs, mouth parts and other body parts.
15 June 2020 6,000 98 View
I am currently working on emotion recognition. I am looking for a dataset that contains labeled image files for emotion (i.e. happiness, sadness, etc). I've found several dataset but not exactly...
06 May 2020 9,650 7 View
28 January 2020 744 3 View
I simulated an optical system in both sequential and nonsequential modes. I used a Gaussian entrance beam for my system and then, compared the results of "Physical optics" in sequential mode and...
30 November 2019 478 6 View
Please help me in the identification of this well preserved fossil plant found in Tufa . Thank you in advance !
05 November 2019 4,783 6 View
I am working on a study of the collection of ectoparasites from migratory birds in Egypt
10 June 2019 7,607 3 View
Is there any model available to predict surface runoff temperature?!
17 October 2018 1,179 5 View
Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...
03 March 2021 6,223 5 View
Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru
02 March 2021 1,787 2 View
Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...
01 March 2021 2,027 2 View
It's a hydrolysis reaction, which may produce by either acid or base-catalyzed reaction. so can anybody help me with this, which condition is suitable for this reaction?
26 February 2021 1,760 8 View
As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...
23 February 2021 3,175 3 View
I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...
22 February 2021 10,099 5 View
I tried to separate my substance from a protein in a sillica gel column. By mistake, it dried and cracked. Can I save the trapped substance? Can I repack it ,or at least elute all of the trapped...
22 February 2021 1,789 3 View
Is it possible to implement FBM in a commercial FEA software package, such as FEMLAB, COMSOL, or open source software like Moose?
22 February 2021 2,968 1 View
My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...
22 February 2021 2,965 4 View
21 February 2021 3,417 5 View