Dear professors, i am confused with how to figure out the tea bag index?

Hello, i am confused with how to figure out the tea bag index,could you please tell me how to compute the letter "a" and "k". Can i use R or Sigmaplot to fix it?

09 December 2020 6,705 3 View

Strain Hardening Phenonmenon under Uniaxial Tension when using ABAQUS CDP?

Dear all, I encountered some problems when using the ABAQUS CDP model. Could you please give me some suggestions? I did a monotonic uniaxial test using a single 3D solid element (C3D8R) and the...

04 October 2020 7,111 3 View

Buckling Analysis - Risk vs Ex/Implicit vs Static Stabilised - Displacement vs Force Control ?

Dear all, I am studying how to conduct lateral-torsional buckling analysis of a simply supported beam. The beam is purely elastic, and the boundary conditions are shown below. I started with a...

21 July 2020 3,761 2 View

How do I detect the onset of each period of a noisy periodic signal (MATLAB preferred)?

I have a noisy periodic signal, like the attached picture, is there a way to extract the time of each onset of each period (shown by red arrows)? MATLAB preferred other programming languages also...

16 July 2020 5,988 8 View

Dose anyone knows 3AO cells (ovarian cancer cells ) background?

25 March 2019 9,796 1 View

Variable importance (a new R2 method)+ Could I just make use of the original model weights to predict direcly under the modified datasets?

When measuring the variable importance, Olden(2015) proposed a new R2-based measure of relative variable importance after revealing methodological weaknesses of PSW and PCW. Its basic steps is...

27 February 2019 988 1 View

In Q-Exactive Orbitrap or Q-TOF, how does the quadrupole select topN ions for MS/MS analysis in data-dependent acquisition?

In high-resolution tandem mass spectrometry such as Q-Exactive Orbitrap and Q-TOF, full scan/ddMS2 is commonly used. In this mode, a full scan is first acquired, followed by fragmentation of top N...

25 February 2019 6,737 6 View

Where can I get a open source code for Multi-spectral segmentation?

15 April 2018 684 4 View

How to synthesize 10nm Ag nanoparticles?

I follow the literature to synthesize Ag nanoparticles, but I can't get the same result. I think the problem is that when should adjust pH?

25 January 2018 9,486 4 View

Who Can Help Me with my Vienna Rectifier Simulink , I just can't lower the THD

The simulink model is past below, The control method is (3-level to 2 level equivalent) SVPWM, I just can't lower the input current THD.

14 August 2017 7,784 4 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

How the Ground Plane implantation is performed without damaging (and w/o varying the undoped nature) the top Si (8-10 nm) in FDSOI technology ?

It is a general practice to introduce Ground Plane in FDSOI devices under the BoX. The Ground Planes are introduced by Ion Implantation through Top Si layer and Buried Oxide. I wanted to know that...

24 February 2021 5,974 4 View

Any way to separate out fluorescent channels from a composite image?

Hi there, I've been using the EVOS Auto II microscope for some time now and usually I will save the transmitted light/bright field image and the images from fluorescent channels as separate...

15 February 2021 546 3 View

Please, How can I plot a channel capacity of MIMO and SISO in matlab?

CSISO= f(frequency) : plot(f, CSISO) ? CMIMO= f(frequency) : plot (f, CMIMO) ?

13 February 2021 5,225 4 View

The reason of PMMA channels cracking?

07 February 2021 3,663 2 View

How can I reduce run-to-run variation in TMT MS experiments?

I planned an experimental setup using 10-plex TMT with 9 conditions and 1 bridge channel to compare 5 replicates. But since I experienced some run-to-run variation, I was wondering if a better...

31 January 2021 3,405 3 View

What method should I use for time-varying signal analysis?

Hello! We have a project where participants engaged in reading, thinking and then responding to an ethical dilemma. We used the EMOTIV 14 channel headset to track brain activity. The reading,...

29 January 2021 4,182 3 View

What is the best GIS tool to calculate connectivity score for a point along aquatic network?

Hello, I am looking for a GIS tool (ArcGIS, QGIS, R, etc.) that will calculate a measure of habitat connectivity for nodes along an aquatic (estuarine) network? My dataset is comprised of a...

12 January 2021 6,107 2 View

Are there other models that meet the same purpose?

Both Jakes and Gaussian models are used to characterize the power spectral densities of mobile communication channels.

11 January 2021 759 3 View

How can I write MATLAB simulation codes to define a distributed MIMO system?

Hi Good time How can I write MATLAB simulation code to define a distributed MIMO system? I have two base stations and one user and I have trouble determining the size of H = [H1(d1); ... ;Hl(dl);...

08 January 2021 9,560 3 View