What are the engineering methods for feature selection in machine learning?

Hello researchers, I have a dataset that contains 36733 instances, What are the engineering methods to be used for feature selection in machine learning?

09 February 2021 363 11 View

Does using a likert scale in my qualitative research will make it mixed method?

I am conducting a qualitative research and using two qualitative data collection tools (1. Reflective journal 2. Semi-structured interviews). In the reflective journal I have asked the...

10 December 2020 4,672 7 View

How to improve the clarity of the exported maps from GIS software?

I am performing mapping for some hydrogeological items using GIS and I have a problem with the clarity of the exported maps from it even after I raised their resolution into 1000 dpi, how can I...

25 October 2020 1,804 8 View

Effect of initial dye concentration ( methylene blue) on removal percentage?

i am studying the variables (study of initial dye concentration ) for removing methylene blue (mb) using a composite that i prepared. the results showed that on increasing dye conc, the removal...

01 October 2020 3,016 3 View

What's the difference between using Collagenase P and collagenase A to dissociate mice pancreas tissue into single cells?

Trying to isolate single cells from pancreas for FACS cell sorting. The protocole suggested 0.5mg/ml collagenase P +0.1 ng/ml DNase I per 1 ml of HBSS. Using collagenase A, the tissue wasn't...

14 January 2020 8,866 2 View

What are challenges in PV Floating solar?What Quality parameters we have to check at site?What is process of Earthing Electrical Equipment in Water?

Challenges in PV floting solar

06 August 2019 3,941 3 View

How can we change the saturation degree of a soil using FLAC 2D software and UBCSand model??

UBCSand model is a user defined model to simulate liquefaction.

29 February 2016 4,923 3 View

Should a plant extract be dissolved in DMF or DMSO only for antimicrobial assay?

the extract dissolved in ethyl alcohol gave negative results...could it be due to poor diffusion to agar?

10 October 2015 1,579 9 View

Can anyone suggest some good recent articles/meta-analysis on disaster, trauma children and art therapy as an intervention?

13 July 2015 5,735 6 View

How do I get rid of triethyl amine in a reaction?

Triethylamine was added in excess to a reaction, so how can I get rid of it from my product?

26 November 2014 2,305 12 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

How do I increase the yield of my PCR product?

Hello, We would like to increase the yield of our PCR product. We are running a series of PCR reactions that is targeting ~1.1kb sequence. We begin each reaction with ~400pg of template DNA...

02 March 2021 4,029 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

PACYC PCR not working after several attempts. Would anyone have any suggestions?

So, I have been trying to run a pACYC PCR which will be used later on for a Gibson Assembly. However the PCR is not working. I have already tried gradient PCR and changing extension time; however...

02 March 2021 1,146 2 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

Runs of nucleotides in Sanger sequencing?

I performed site directed mutagenesis, transformation, and then I sent out plasmids for Sanger sequencing and found out that there is extension of DNA just before the stop codon. I am not sure...

27 February 2021 547 3 View

Can thermal cycler machines be problematic during PCR?

Hi, my question is about the heating of thermal cycler machines and I hope some of you had experienced a similar thing previously. There are two thermal cycler machines in the lab(BioRad) and for...

26 February 2021 4,777 4 View