Samples to study circular dichroism (chirality)?

I want to build a low-cost polarimeter to study circular dichroism (chirality). What type of samples can I use? I am looking for samples that can be found outside the laboratory.

01 March 2021 9,101 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Anybody with an idea on how do design specific primers for detecting tomato resistance genes tm-1, TM-2 and Tm2^2?

I am trying to identify these 3 genes among some tomato cultivar collections and after aligning some sequences from NCBI, I couldn't find unique sequences to target for specific primers. There...

28 February 2021 606 3 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

Benefits of the 24 welled plate?

We have always used the 96 welled plate, the 48 welled plate but apparently there is much evidence on the 24 welled plate and above all its benefits.It states it is the same you would use on ELISA...

28 February 2021 1,149 1 View

Algorithms to filter corrective max and min from a set of data?

I've got this 5 year Direct Normal Irradiance data I downloaded from https://re.jrc.ec.europa.eu/. I ordered this by year and by every 24 hours because I need the DNI curve by max in summer, min...

17 February 2021 2,777 5 View

Which are the factors that determine in a tourist the destination for their travel?

I'm working on a study of how selection criteria of Tourism have changed considering Pandemic + Vaccination expectation, so propose a new prediction behavioral dynamic model for Riviera Maya (Mexico).

09 February 2021 314 7 View

Flexibility of RNAseq?

When you use RNAseq I understand that it must follow certain conditions when you use it. One of them is the insertion of a polyA tail. The insertion of the polyA must include then...

05 February 2021 3,770 4 View

Is there an open source tool the measures the GRAVY index of a peptide incorporating the PTMs and unusual amino acids (e.g. hydroxyproline)?

Right now, I am using ProtParam to compute GRAVY index of peptides. However, some of my peptides are post-translationally modified, and contains unusual amino acids. I assume that ProtParam does...

29 January 2021 8,300 4 View

Equation to calculate Chlorophylls and carotenoids concentrations from a MeOH:HCl 1% (v/v) plant extract solution?

Hello everybody! I have performed an acidic MeOH:HCl 1% (v/v) plant extraction from Arabidopsis leaves to calculate Anthocyanins concentrations based on: Rabino, I., and Mancinelli, A. L. 1986....

25 January 2021 3,686 2 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

Does any one can help me about my irc error messages in gaussian?

Hello every body I am using IRC command line to confirm my ts molecule which is obtained from Scan. my problem is that some of my irc files ran abnormally I mean when I open it with gauss view the...

13 December 2020 7,955 5 View

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30 November 2020 5,089 5 View

How do i calculate equivalent von Mises stress in a 2d fem model?

I want to calculate the equivalent stress for an elasto-plastic analysis.Which is the correct way to do it: 1) Calculate stresses at each Gauss Point and then evaluate equivalent stress at each...

30 September 2020 2,379 3 View

Can you approximate a steel powder layer for caluclations with gauss law?

26 March 2020 2,477 3 View

What is the best way to get positive and negative cumulative components? and what are the conditions to get it?

Dear sir, to run the asymmetric causality (see Hatemi-J, 2012) or the hidden co-integration what is is the best way to get positive and negative cumulative components and is there any conditions...

13 February 2020 3,151 1 View

What is the best way to import panel data into Gauss program?

I need to test the co-integration relationship between some variables in the presence of structural breaks I have some codes to do this in Panel data but the problem is how i can import data to...

01 February 2020 7,903 3 View

Is there a way on how to input a fibre orientation tensor for several gauss points in an Abaqus UMAT in a hyperelastic anisotropic model?

So I want to write a UMAT in which the free energy function will have a fourth and possibly fifth invariant which has a fibre orientation tensor in it. The fibre orientation tensor for every gauss...

01 February 2020 9,483 4 View

Formula/expression for finding/generating noise signal from gauss distribution?

Let say i want to write a program/script on MATLAB, and condition is that MATLAB code should generate a noise signal from gauss distribution of mean "11" and variance="18". But i am confused...

31 January 2020 2,652 3 View

Help with VBA code for Gauss elimination?

Colleagues, I wrote VBA code for function of Gauss elimination (in attached files). But I can't launch this function in Excel. I can't find it by her name in line for function's input. Could...

19 January 2020 5,155 5 View