Angular momentum and the Dirac equation - interpretation?

The Dirac equation for a free particle reads H = c*alpha*p + beta*m*c^2 (Sorry for the miserable formatting - how to enter Latex Code or similar?) The commutator [H,L_i] is nonzero for any...

01 February 2021 7,037 1 View

How to measure abundance in an LC-MS/MS experiment?

Is the chromatographic peak a valid measure of a compounds` (relative) abundance in LC-MS data? We have recorded three MS/MS spectra; their retention time falls into a specific chromatographic...

13 January 2021 6,685 6 View

How To Run Granger Test with Panel Data? Do you have a practical guide?

Hello together, I would like to perform the Granger Test with my panel data. I am investigating 40 banks and examining the impact of digitization on ROA. Specifically, I have the variable...

01 December 2020 3,642 5 View

Does anyone have good examples of how aesthetic standards have influenced creative design in building structures?

My research is looking at the influence of creative design and technical standards on the development of architecture during a period of history. This has relevance to the modern day in terms of a...

05 November 2020 5,214 6 View

Electrocardiogram (ECG) Images available?

We are looking for a database or a data set with ECG images. We have already found some that contain the ECG data, but we need the images to evaluate them with AI methods.

01 October 2020 3,688 3 View

Indoor and outdoor coronavirus concentrations in aerosols?

I have been wondering why there are so few studies that measure the concentration of coronavirus in the air, especially outdoor studies, so I started searching for reliable scientific...

28 September 2020 5,695 5 View

How to compute distance between matrices?

Dear all, I'd like to compute the distance between two brain states. Each brain state is represented as a symmetric correlation matrix of X by X regions. As a result, I'd like a "distance matrix"...

09 June 2020 4,884 7 View

Which collaborative tools for interactively writing R code are out there?

I am searching for tools to collaboratively write R code together (and run it in an online environment). Crucially, the functionality should be similar to Google docs, i.e. all users should be...

26 May 2020 6,846 6 View

Metabarcoding fungi in lake sediment cores - advantages/disadvantages of ITS and 18S?

In my PhD, I want to analyse fungal communities in lake sediment cores from Siberia. One of the performed experiments will be a metabarcoding of the fungi. Therefore I am evaluating primers at the...

05 May 2020 3,920 1 View

What are the greatest insights academic philosophy achieved during the past 100 years?

I'm seeking a justification for the existence of academic philosophical work. My question is about established 'insights': stable advances, which are largely exempted from any further controvery...

25 April 2020 644 9 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

How to accurately quantify chitin?

Hi all, I have been working on the quantification of chitin in insect samples and feed for a while but I can notice that the quantification methods (e.g. exposure to HCl, NaOH, and weighing sample...

01 March 2021 1,843 2 View

Please help in identification of this insect?

This insect is minute in size around 1 mm and not clearly visible with naked eye.

22 February 2021 5,907 11 View

Purification of proteins from baculovirus-infected insect cells?

18 February 2021 6,665 6 View

Extraction of DNA from insect samples conserved in silica gel?

Hi everybody, can anybody suggest how to extract DNA from insect samples conserved in silica gel (in my case, mosquitoes)? Does anybody know a commericial kit which does that or a particular...

10 February 2021 3,392 4 View

How do I prepare and store insect samples for JH measurements?

I need to preserve termite samples for future quantification of juvenile hormone in their bodies. Or extract the Juvenile Hormone and keep that samples stored for future quantification. I may need...

09 February 2021 1,995 1 View

Working with insect primary cells in cell medium and in saline solution?

I work with insect primary cells, which I let grow in TC100 insect medium. For fluorescence measurements I have to discard medium (because of its fluorescence properties) and give a saline...

28 January 2021 3,867 1 View

How to extract a single stranded DNA from a double stranded DNA sample isolated from stem borer(rice affecting insect) ?

How to extract a single-stranded DNA from a double-stranded DNA sample isolated from stem borer(rice affecting insect)? As I need to amplify ss Dna using a COX-1 marker having primer sequence as...

22 January 2021 3,424 3 View

Helicoverpa armigera eggs are not hatching in lab condition, why?

Dear RG friends, I am providing a complete H. armigera diet for larvae and maintaining the eggs in the growth chamber as well as in-room conditions. But since three months, eggs laid from the...

21 January 2021 5,546 32 View

Detection of insect eggs in stored and processed products?

Currently, in order to identify insect eggs in stored or processed products (such as contaminated flour or wafer samples), staining was performed based on the method mentioned in the below...

15 January 2021 6,362 5 View