How to compare individual spectra of a scan to a mean of the whole scan?

I'm doing a project, where I scan over a sample recording a spectrum at each position. Although the sample is supposed uniform, there's a large difference in the overall spectral response of each...

13 July 2020 2,077 3 View

What is your experience on practicioning as opposed to doing academic research?

Lately, I have been thinking much about the relationship between working practical tasks, on the one hand, and doing scientific research, on the other. What is your experience..? Most...

01 August 2019 4,989 4 View

How to prepare a freshwater sample for chlorophyll-a measruement using a microplate reader?

I would like to use a microplate reader for chlorphyll-a measurements in freshwtaer samples. I found a lot on the measruemnt itself, but I am still not sure about my sample preperation and...

14 May 2019 1,831 2 View

Under which conditions are Mie Scattering Amplitudes imaginary?

Hi, I am using Maetzlers Mie Scattering Script from 2002 to calculate Phase Matrix entries. But under no conditions I am able to produce imaginary scattering amplitudes S1 and S2 which is kind of...

11 November 2015 3,806 4 View

Anyone familiar with VHL immunohistochemistry on murine sections?

We are looking for an antibody that can detect murine VHL (von Hippel-Lindau) via immunohistochemistry, preferably on FFPE sections. Many thanks and best wishes! Thorsten

03 September 2015 9,737 3 View

What is the correct terminology for the following two learning phenomena?

What is the phenomena called when a student or pupil can learn better because he or she can associate the new knowledge with something previously known? And: What is the phenomena called when a...

05 February 2014 3,043 8 View

Metric Modeling and Representation of 4D Data through 3D Vector Tensoring

01 January 1970 691 2 View

How to stain membranes independent of membrane proteins?

Dear all, is there any stain or technique to visualize membranes (e.g. nuclear membrane) without using an antibody for membranous proteins? E.g. any dye that incorporates in all the different...

01 January 1970 195 2 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 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

Which is suitable for use with Python? MySQL or SQL Server?

Which is suitable for use with Python? MySQL or SQL Server? What is your suggestion?

01 March 2021 3,422 3 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

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How to prevent ANFIS Model from negative prediction values in MATLAB?

I have input and output data set for "ANFIS modeling in MATLAB", and I am getting some negative predicted values of output in testing. However, the predicted values of output in training are...

28 February 2021 3,459 3 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

No module named 'tensorflow.keras.backend.tensorflow_backend' ?

System Description Cuda 11.2 GeForce GTX 1080ti tensorflow version 2.4.1 keras version 2.2.0 python version 3.8 I was getting the below error when I try to run my code on the...

25 February 2021 6,673 2 View

How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View