13 March 2022 3 10K Report

Is there a multivariate analogue to the Bernstein-Widder theorem which says that a function on $[0,\infty)$ is completely monotonic if and only if it is the Laplace transform of a non-negative measure ?

More Frédéric Ouimet's questions See All
Where is the error in the computation of coefficients of Baker-Campbell-Hausdorff formula?

I have a Lie Algebra with a basis: A_1 = [[0 1 0], [0 0 0], [-1 0 0]] A_2 = [[0 0 1], [-1 0 0], [0 0 0]] A_3 = [[0 0 0], [0 1 0], [0 0 -1]] The Lie brackets are [A_1,A_2] = A_3 ; [A_1,A_3] = A_1...

21 October 2020 1,479 6 View

Looking for the legacy Opticstudio Zemax version 15?

Can someone provide the installation file Zemax Opticstudio15? We have the USB key with the license but not anymore the installation file and Zemax does not provide legacy versions older than...

16 January 2020 588 10 View

How to interpret regression results if dependent variable is logged and independent variables are standardized?

In my fixed effects panel regression analysis the DV (Triadic Patent Families) enters in logarithmic form. To counteract very small coefficients because of different scales in my IVs and enable...

17 December 2018 3,020 1 View

Is Carboxymethylcellulose stable over few day ?

Does anyone knows if carboxymethylcellulose is stable during 10 days. We should provide a drug to our animals and we will use CMC as a vehicle but the dose of drug avec very low so I'm wondering...

28 February 2018 8,546 3 View

In pop culture, do we remember best the artworks that create a sense of unanimity or those that elicit debate?

This question is motivated by the recent debates that sparked around the release of Star Wars: the Last Jedi. The work is challenging the philosophical assumptions of many fans and is eliciting...

22 December 2017 5,677 3 View

I'm planning a glucose uptake assay.

I'm planning a glucose uptake assay with adult mesenchymal stem cells and possibly rat neural stem cells for my undergraduate thesis. i'd appreciate some recommendations for uptake kits and...

18 July 2017 2,222 1 View

Does anybody have primers for human/mice IFN Alpha and Beta?

Hi everybody, For my Master Thesis I am working on Orthobunya Viruses and for infection studies (in mice, Huh7 cells, etc.) we want to meassure IFN alpha and beta expression, as well as the...

22 March 2017 2,691 2 View

Who did the best mechanical shear-flow experiments for shale ?

At low strain with shear loading and unloading steps.

28 May 2016 344 3 View

Are proteins bound to the extracellular matrix extracted upon lysing cells by scraping in lysis buffer in a PBS-washed petri dish ?

I am wondering if extracellular protein are also taken out when we extract protein directly from a dish (PBS-washed cells). Many protocols appear to detach cells with EDTA and then extensively...

10 May 2016 1,556 2 View

Are there Quantum sensors to measure cosmo-telluric energy ?

is there any interesting quantum sensor to measure cosmo-telluric energy ?

17 November 2015 7,711 29 View

Similar questions and discussions
Covid 19 Pandemic ' impact on digital transformation?

Covid 19 Pandemic and digital transformation

22 February 2021 3,351 5 View

What are the best cations for preparing competent cells, Ca2+ or Mg2+?

I have been reading various articles and most state that treatment with CaCl2 produces higher efficiency of transformation than MgCl2. Can anyone explain why Ca2+ is better than Mg2+ at...

16 February 2021 8,519 5 View

Is the logarithmic transformation a necessary step in time series analysis ?

Hello, I'm checking if the log-tranformation of time series data is a necessary step; We all know the aim of such transformation, but in every study (in time series analysis) we found the authors...

15 February 2021 5,655 14 View

How much amount of DNA (ligation mix) should I use for transformation?

Hi Fellow Scientists! I am trying to clone my 300 bp insert into a 6 kb vector. I run a few different ligation reactions using (1:3 vector: insert molar ratios) 10, 20,30, and 40 ng/ul vector...

15 February 2021 9,563 6 View

How to produce huge amount of protoplasts from Fusarium graminearum?

Hi, all I am using some protocol for protoplast production from Fusarium graminearum (Fg), but I need them in a huge amount. Sometimes the protocol worked well but most of the time failed....

14 February 2021 2,286 4 View

How to measure 50uL of cells?

Hello, I am planning to do a transformation, and on the protocol it says "Scrape a 50 ml volume of yeast from the YPAD plate using a sterile inoculating loop or sterile toothpick". But I can...

14 February 2021 6,247 3 View

Mixed ANOVA with some normal and some non-normal data?

I am looking to run a 2x5 Mixed ANOVA to examine Sensory Processing Sensitivity in Highly Sensitive People (HSP) and Non_HSP. My Between-Subjects factor is HSP and Non-HSP. All participants tested...

11 February 2021 1,445 6 View

What could be the cause to have an E.coli DH10B transformed with pUC18 to grow in MKL + ampicillin but is not LAC+?

Hello everyone, I did a transformation of E. coli DH10B using pUC18 plasmid. The bacterias did grow on MKL medium with ampicillin but the colonies showed a white/pink colour and the medium was...

08 February 2021 9,720 3 View

After transformation of Dh5alpha competent cells I found a cloudy white ppt before plating. Can anyone explain this?

After transformation of Dh5alpha cells by heat shock I grew them at 37 in 200microlitre Terrific Broth (because I had it at hand) and then before plating I found cloudy white ppt in the cell...

03 February 2021 7,867 3 View

Can you suggest some plant transformation vectors that I can use for the expression of GFP/YFP-tagged protein of my interest?

I want to generate stable Arabidopsis transgenic lines expressing my protein of interest fused with GFP/YFP under the control of its native promoter. I want this for localization studies. Please...

23 January 2021 2,790 3 View

Our partners will collect data and use cookies for ad personalization and measurement. Learn how we and our ad partner Google, collect and use data. Agree & close