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

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

Which part, real or imaginary, in relative permittivity of metal should be used to calculate the polarization ratio?

20 August 2020 302 2 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

How Can I clain a removal of a co-author?

I would like to make a correction in a co-author in your paper which is wrong. This name is also in other papers of Kenton Ko. Zey Ko is not a Co-author . The correct name is Zdenka...

24 February 2021 3,476 4 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 View

Difficulty in debugging code to correct error - TypeError: '<' not supported ?

I am trying with a Unet code ontained from net ...in tensorflow. When trying to predict the segmentation result with the trained and saved model with metric " iou" using "CustomObjectScope"...

22 February 2021 5,254 1 View

How to perform Haldane correction on SPSS?

I was wondering if anyone knew how to perform the Haldane correction for SPSS (this is the definition of the correction -...

21 February 2021 2,882 1 View

absorption= 1-mag(S(FP1:1,FP1:1)*S(FP1:1,FP1:1))-mag(S(FP2:1,FP1:1)*S(FP2:1,FP1:1)) is it correct for absorption ?

hi everyone I am simulating a unit cell structure in HFSS using Flouquet port having two modes for absorption I have used this formula:- absorption=...

17 February 2021 9,178 2 View

How can I calculate the magnetic force applied from a magnet (no electrism)?

I would like to calculate the magnetic force on a Fe304 particle which is into a liquid solution . The magnet is above the solution , and there is no electricity. I found this formula : F = (V...

13 February 2021 4,770 3 View

What is the best way to do symmetry in ANSYS Fluent for flow between two concentric cylinders ?

I am working on Taylor Couette flow between concentric cylinders and the results are correct for the full case. however, I wanted to do symmetry case to improve the mesh. I have tried periodic...

11 February 2021 2,193 6 View

What is the ideal value of UACI for image encryption scheme?

UACI - Unified Averaged Changed Intensity between cipher images. Why some papers refer ideal value to be 33.33 and some refer it to be 33.46? Which is the correct value? (In reference to image...

11 February 2021 9,562 2 View