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

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

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

Carbon coating of metal particles?

I am searching for potential project partners (companies) with experience in the carbon coating of metal particles.

03 March 2020 8,208 4 View

Method for the extraction of insect melanin?

Dear colleagues, does anyone know a reliable method for the extraction of melanin (from both cuticle and formed by immune activated phenoloxidase in the body cavity) from whole insects? Thank...

24 May 2019 962 3 View

Would there be any difference between using human Fc fusion proteins vs mouse Fc fusion proteins in a mouse model?

Multiple research groups have tested petide-human Fc fusion proteins in mouse models, with no apparent adverse effects. However, I can't find any information on the difference between using human...

08 February 2019 8,014 1 View

Does anyone have barnase-resistant E. coli?

Promega is selling those Flexi-System Vectors. However, they come with Barnase as a selection marker and hence cannot simply be transformed into your usual library-competent E. coli strain. Since...

14 January 2019 480 4 View

Can one use 1,5-DAN (97% purity) for MALDI analysis?

1,5-DAN is a fantastic matrix for MALDI ISD (in-souce decay) analysis. Can anyone tell me whether one can use the cheaper 1,5-diaminonaphtalene (97% purity) instead of the much more expensive...

25 November 2018 211 3 View

Detection of pathway activation at the end of an experiment - which methods exist?

Problem: we want to know - at the END of an experiment - if a signalling pathway was activated DURING the experiment. I had read something about a novel technique that allowed this. I think that...

05 November 2018 9,372 3 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

Does anyone know where I could find a LabView driver for a Zahner Xpot Potentiostat?

I am using a Zahner XPOT potentiostat and I want to control the instrument by a LabView driver, as the original software of the potentiostat lacks many functionalities. I already searched in the...

09 December 2020 5,537 2 View

Labview -- lockin amplifer SR 530; GPIB USB--communication problem?

Hi, I connect Lock-in Amplifier(SR530) with GPIB-USB. After I scan device with Measurement&Automation, the address of instrument can be found. 23 based on the manuanal. but as I send data...

07 October 2020 1,425 2 View

Using: LabVIEW, DASYLab, Excel, or DIAdem--What is the easiest way to evaluate a signal vs time graph, to determine if the trace falls within limits?

I am making a test request template for product engineers to fill out. The template will basically configure the product, and will prompt the user for nominal values and limits of each variable...

16 September 2020 4,873 2 View

USB based DAQ options with atleast 4 analog output channels and 8 analog input channels other than National Instruments?

National Instruments provides vast variety of DAQ options which are based on LabVIEW, however they are way too expensive when it comes to opting option with high analog output channels (like 4)....

30 August 2020 5,195 6 View

Can anyone please help me in extracting the spectra from the image obtained from the CCD?

I obtained the image from CCD using the LabVIEW program. Now I need to get the spectral feature from this image. I have the calibrated wavelength for this as well. I will be glad if anyone...

15 July 2020 311 1 View

Can anyone share the MATLAB/LabVIEW program to measure current voltage by Keithley 2635b?

Current-voltage (IV) measurements with current compliance (CC) to measure resistive switching measurement

21 March 2020 1,567 4 View

Idea for a hands-on demonstration of LabVIEW ?

Dear Members, I have started training the faculty of a govt. university of my country about LabVIEW on a part-time basis. So far they have been trained on MATLAB , Arduino , Raspberry Pi and basic...

13 March 2020 521 4 View

How to move motor by using labview?

09 March 2020 2,788 3 View

How to use more than one instrument driver in a single labVIEW task to measure input vs output curve?

I am trying to measure magnetostrictive strain as a function of applied DC magnetic field. For this, I am using NI9237 module sitting on a chassis for strain measurement, and a lakeshore 425...

29 January 2020 2,862 3 View