I need dataset for recommandation system?

Hi every body I need to collect datasets from different source to work on recommendation system algorithms, could you advise me how collect data?

27 February 2021 7,063 7 View

How to build .cks file (chemkin file) in ANSYS-Forte for hydrogen-diesel dual fuel?

Dear all, I'm trying to simulate the combustion of hydrogen diesel in dual fuel mode in ANSYS-Forte. I have kinetic reaction mechanisms file( .txt) but in order to build the .cks file in the...

28 December 2020 1,570 3 View

How to measure both Sulfites and Sulfates Ions In water?

Could you please help me to know a very simple method to measure the amount of Sulfite (SO3) and Sulfate (SO4) ions in the water? (titration preferred)

27 December 2020 9,350 4 View

How can I fix the `engine error` with no error message in Lumerical DEVICE software when it only shows directories instead of error message?

When I run my simulation in Lumerical DEVICE, it shows an error entitled `engine error` after reaching the simulation to 100 percent. When I right-click and chose 'job details`, it only shows the...

22 October 2020 4,973 1 View

What are the effect of data spread on Random Forest model performance?

Since I am using the Random Forest model in R to predict LST (land surface temperature) from actual LST, I realized that model performance is better in lower Average LSTs, thus I wanted to extract...

14 October 2020 9,278 2 View

How can I get rid of much amount of solvent which is needed for the reaction to make film by film applicator?

Indeed, I want to make a very thin film (50 microns) of PU on the steel surface as a coat. for the reaction, much amount of CHCl3 is needed to dissolve one of the reagents to participate in the...

12 October 2020 748 3 View

What is the major meaning of PCs in Principal Component Analysis?

I am using PCA to extract major meaningful data from many different parameters that are embedded in my remote sensing satellite imagery. I know that PCA is a dimension reduction model and the...

13 September 2020 7,596 7 View

How do I get the number of water molecules in a carbon nanotube?

12 September 2020 886 6 View

What is the best book to teach entrepreneurship to primary students?

What is the best book to teach entrepreneurship to primary students?

07 September 2020 6,757 3 View

Is there any specific Proportion for training and testing set for remote sensing images?

Can I use one Sentinel image for training my model and another one for testing? Since i have two or three images, I wanted to use one or two image for training and the rest for test. However, I...

20 August 2020 9,028 6 View

About loading of Doxorobicin on MOF (drug delivery)?

Dear Researcher Respectfully, I am working on drug delivery. I synthesized Zn-MOF. I am going to load Doxorobicin on it and the study the derivery behaviour. I tried several times to load. but I...

07 February 2021 748 2 View

How to add hydroxyl (-OH) functional group to nano-silica particles?

I am working on nano-composites and to increase mechanical strength I need particles having hydroxyl group on their surface. I currently hava silica particles available so I was wondering if there...

02 December 2020 3,151 7 View

How to add a hydroxyl group to surface atoms of SiC ?

Dear Researchers, I'm trying to simulate oxidation of SiC using LAMMPS. I need to add hydroxyl ( OH ) group to the surface atoms of SiC to prevent the fast reactions between oxygen and surface...

10 November 2020 8,112 3 View

How to hydroxylate the surface of bismuth telluride nanoparticles?

Would it be possible to add -OH functional groups to Bi2Te3 nanoparticles?

07 October 2020 6,560 3 View

How can i steadily disperse graphite in water?

The size of the graphite is about 1 to 3 micron with the pH of 6.16 dispersing in the water.The infrared spectroscopy shows thats there are some hydroxyl and carboxyl on the surface.And I want to...

09 July 2020 8,378 4 View

What's the pKa of the phosphate group in DNA and RNA molecules?

Phosphoric acid, when free in solution, is a triprotic acid with pKa1 = 2.2, pKa2 = 7.2, and pKa3 = 12.4. But most of the phosphate groups in DNA and RNA molecules participate in phosphodiester...

23 March 2020 4,890 15 View

How should I hydroxylate tungsten powder for organosilane grafting?

I am having trouble depositing MPTMS/APTES onto tungsten and I am concerned there are not enough hydroxyl groups on the powder surface. So far I have been exposing tungsten to water to hydroxylate...

04 February 2020 4,677 2 View

How to calculate the carbonyl index and hydroxyl index from FTIR results?

I have been searching for the calculation of carbonyl and hydroxyl index of styrene based polymers from its FTIR results, but i couldn't find a supportive literature. Kindly help me out to find a...

07 August 2019 4,804 5 View

Cellulose acetate vs cellulose acetate butyrate?

Can someone help me understand why cellulose acetate butyrate is more hydrophobic than cellulose acetate? I prepared nanofibers by electospinning of both polymers and both have initially the same...

03 August 2019 2,341 5 View

How to calculate the carbonyl index and hydroxyl index from FTIR results?

I have been searching for the calculation of carbonyl and hydroxyl index of styrene based polymers from its FTIR results, but i couldn't find a supportive literature. Kindly help me out to find a...

02 August 2019 5,930 4 View