How to calculate the energy reflection coefficients in LAMB wave edge reflection problem?

Hello everyone, Has anyone ever succeeded in calculating the energy reflection coefficients in LAMB wave edge reflection problem? Or any available code resources? I am a third-year master...

08 December 2020 1,151 3 View

Flexural wave absorbtion in thin plate at low frequecy using PML?

Hello everyone, Recently, I am trying to simulate the flexural wave relating problems in an infinite (large enough) thin plate at low frequency using COMSOL. Frequency-domain and eigenfrequency...

18 October 2020 6,927 3 View

How to calculate the energy reflection coefficients in LAMB wave edge reflection problem?

Hello everyone, Using the spectral collocation method (SCM), I have successfully obtained the complex wavenumber k, displacement U and stress field S of different LAMB modes. However, when I...

31 August 2020 3,813 2 View

How to calculate Lamb wave dispersion curves with a complex wavenumber k?

Hello everyone! I'm trying to draw Lamb wave dispersion curves with MATLAB, and I have succeeded with calculating the results with a real wavenumber or a pure imaginary wavenumber. I'm not so...

08 August 2020 2,665 11 View

How can I calculate a frequancy domain problem with PDE in Comsol?

Hello everyone, I want to solve a elastic wave problem in Comsol using PDE module since my model have a different consititutive relation which is not included in the present modules. I have...

23 July 2020 7,337 3 View

How to process synchrotron XRD data in Jade 6?

18 May 2020 7,995 4 View

OpenSees DisplacementControl of a node that is not loaded?

I am trying to model nonlinear, cyclic behaviour of a cantilever beam, I wish to apply a cyclic load at the free end. And I want the midpoint of the beam to be displacement controlled (ie. reverse...

17 October 2019 4,895 1 View

We transfected HEK cells for a secreted protein and want to confirm the protein is expressed in right MW. Should we collect supernatant for Western?

We transfected HEK cells for a secreted protein and want to confirm the protein is expressed in right MW. Should we collect supernatant for Western? Not sure we choose the right method. We have...

14 May 2019 4,804 4 View

The 14C natural abandance keep stable in the atmosphere, so will the acceleration of soil microorganism metabolism influnce the 14C natural abandance?

The 14C natural abandance keep stable in the atmosphere, so will the acceleration of soil microorganism metabolism influnce the 14C natural abandance?

13 November 2018 876 6 View

Laue oscillations in XRD pattern of Pt film

Hi,guys, I have obtained epitaxial NiO(100) film on Pt(100)-covered MgO(100) substrate by magnetron sputtering. The attached is its 2theta-omega XRD pattern. One reviewer comments that " The peak...

26 July 2017 7,657 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View