How do you plot a L*a*b* chromaticity diagram?

I already calculated the colour coordinates of my samples and I would like to plot them in the L*a*b* colour space. Do anyone already have a file I could use? or any explanation of how I could...

24 February 2020 1,416 4 View

Why does spectral binning in CHENOMX seem to ignore the spectra baseline?

I am new to NMR analysis. What I wish to do is an untargeted approach (i.e. no compound identification), using standardized spectral binning. This should be possible and in theory pretty...

19 November 2019 9,402 3 View

Questions about RNA extraction?

Hello, I have a problem with my gene expression results. The results of my endogenous gene are oscillating between samples, generating false negative results. It takes about 12 hours after sample...

08 October 2019 569 3 View

What contamination do you think it can be ?

Hello everybody, I am working in cell culture of normal human dermal fibroblasts and I face a new challenge : detachment and death of the cells are occuring for almost all of my different...

01 October 2019 6,605 3 View

How did Torrance build the flexibility categories and zero originality answers in the TTCT ?

We would like to understand the rationale behind the flexibility categories and zero originality answers creation for the verbal tasks of the Torrance Test of Creative Thinking. What was the...

03 March 2019 9,209 1 View

When is a standard deviation considered as high?

Hi! I have small samples of scores (n= 9 for one group and n=4 for the other group) and I am working with means. In order to be more precise, I would like to use the standard deviation measure....

26 July 2017 5,179 17 View

Which is the best method to collect hemolymph from bumblebees in the field?

03 May 2017 1,817 2 View

How to solve convergence issues with NMDS (metaMDS function in r)?

Hi, I am analyzing proportions of volatile compounds in floral scent, by using metaMDS function in r (vegan) but the analysis does not converge. I have tried to increase the number of tries with...

21 November 2016 2,818 3 View

How the nodes of an element which lie on a surface can be selected in Ansys?

16 November 2016 6,448 1 View

Does a Percoll gradient have to be calcium free?

We are trying to separate tubular cells from mouse cortical kidney using a Percoll gradient without success. The isotonic solution we are using contains 2.5 mM CaCl2. Someone told me that Percoll...

06 April 2015 3,938 3 View

What are the values needed for gabor filter's parameter for cifar10 data?

Hi, I implemented a code to gabor filter cifar10 data but the images after being filtered and stacked are not clear like the original images. I think the problem is in the way I am using the...

03 March 2021 6,317 1 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

How to calculate Total Flavonoid?

I analyzed flavonoid total spectrophotometry, the procedure as below: 2 ml supernatan added 5 ml dd.H2O, then added 0,15 ml NaNO2 5%, 5 minutes later added 0,15 ml AlCl3 10%, After 6 minutes,...

01 March 2021 6,722 1 View

Is stone a sustainable material? Is it a sustainable approach to use natural stone waste in architecture?

I'm designing a zero-waste restaurant and considering using marble waste to make some tables and a bar countertop. My clients think it's not "sustainable enough" and I would like to have more...

01 March 2021 4,326 7 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

RNA-seq DEGs downstream analysis and reporting in literature?

I used EdgeR to get the list of DEGs (differentially expressed genes) from my liver RNA-seq experiment. I have done the gene overrepresentation and GSEA based pathway analysis. I am currently...

23 February 2021 8,969 1 View

How to search for crystal structure for material with atomic position labelled?

I am using the crystallographic open database and materials project to search for cif file but the exact structure is not mentioned or how can I deduce that the given structure and atomic position...

23 February 2021 6,723 2 View

What are the ranges of four diffterent poles of butterworth filter for ECG signal?

Hi, Can anyone please tell me what are the ranges of four different pole orders such as first order, second order, third order and fourth order respectively of butterworth filter for ECG...

23 February 2021 2,554 3 View

Which polarizers are usually used to measure the birefringence of zebrafish muscles?

I already found several publications on that topic, however, the specifications for the used filters are often missing. Some more specific information than "fish is placed between to polarizing...

23 February 2021 1,934 1 View

How to generate AA6061 alloy or any aluminium alloy crystal in material studio?

I need to carry out molecular dynamics simulation on Aluminium alloy. For this i need the crystal structure that which could be further replicated to form a structure.

22 February 2021 1,410 1 View