How define one baker unit(BU) is the amount of hydrogen peroxide catalase ?

07 February 2021 2,006 1 View

Where is the active point of VCSEL?

I am now working on the coupling between vertical-cavity surface-emission laser(VCSEL) and waveguide. However, the window design for laser emission is larger than the waist of Gaussian beam...

27 January 2021 8,318 1 View

Why does COD increase over time when external carbon sources are added in the denitrification process in waste water?

Why does COD increase over time when external carbon sources are added in the denitrification process in waste water? After 1 hour, the concentration increased from 30mg/l to 40mg/l after 20...

17 January 2021 374 9 View

Seperate of organic and inorganic phosphorus in waste water?

Is it possible to separate organic and inorganic phosphorus in wastewater with a filter?

14 January 2021 952 3 View

How to propose constitutive response functions during continuum modeling?

To develop constitutive models in continuum mechanics, one must consider kinematics, balance of momentum, balance of energy, and free-energy imbalance. Next, one must propose constitutive response...

02 January 2021 9,692 4 View

Why use STOP solution in ELISA?

At the last step for data analysis, we always use a STOP solution to stop the TMB oxidized by HRP. Why do we have to stop the reaction? Couldn't we measure the color wavelength of...

17 November 2020 5,177 3 View

How should I explain when the result of CV is good but cyclic charge-discharge is poor in a battery cell test?

I had some CV and cycling test for my battery half-cells. In the CV tests, they were reversible and performed very well. But during the rate performance and the cycling test, they ran only at a...

08 November 2020 7,978 4 View

How to change the title of an article?

Hi All, I have a problem with changing the title of an article added to my account. I have tried to change the title but the attempts always failed. I also tried to add a new one with the correct...

07 September 2020 3,901 3 View

DNA is not precipitating after incubating in ethanol overnight?

I am working on the soil microbiome of heavy metal contaminated soil. I extracted gDNA from the soil sample using the FastDNA Spin Kit and performed ethanol precipitation to clean up the salt...

01 September 2020 3,923 2 View

How to exchange the buffer of peptide ~1KD?

This is a peptide about 1KD in size. The commercially synthesized powder was reconstituted with a citrate buffer(pH 7) and the solution turns acidic, pH ~4. The assay requires a pH at 7 so some...

31 August 2020 870 6 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

What is the difference between L1 and L2 regularization in machine learning?

L1 and L2 regularization

28 February 2021 4,187 3 View

Interested to stain mice tissue with WGA 488 conjugate, anybody has a protocol to recommend?

Interested to stain mice brain tissue with WGA 488 conjugate, appreciate if anyone willing to offer me some guidance or suggestions! Thank you!

28 February 2021 3,951 2 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

Is there any Machine Learning/AI algorithm that lets you predict with incomplete features without missing value imputation process?

For instance, the model is trained with A,B,C,D,E features to predict F target. Then, I want to make prediction on a new data, but with only A,C,D,E is known without doing missing value imputation...

28 February 2021 1,556 6 View