Level 1 pre-post multilevel regression: Panel data or ANOVA approach?

Dear colleagues, I am currently teaching myself in multilevel analysis using educational data. I found few to zero literature on basic analysis methods. In my context we frequently use level-1...

17 February 2021 9,378 5 View

Reliable and Valid Instrument for Causes of Medical Errors?

Is there any questionnaire/survey that measures the causes of medical errors? Example: physician negligence vs. systemic issues. Looking for a reliable and validated instrument. Thank you!

15 February 2021 2,874 4 View

Should the AUC in a concentration-time graph of a subcutaneous implant be roughly the same for poeple?

I have 2 concentration time curves of a subcut drug implant. the first group has a peak around the 50 day mark where as the second group does not. Both groups received the same implant by the same...

10 February 2021 2,305 3 View

Software for flow cytometry-like gating of data sets?

I am currently trying to do image based cytometry from fluorescence microscopy images. From the images I extract data such as cell size and a number of fluorescence intensities. Is there any...

09 February 2021 6,278 1 View

Can A. thaliana splice algae genes?

24 January 2021 329 2 View

Does long term preservation (10years) of Collembola in 99% Ethanol affect recovery rate of extraction by flotation?

Hello! I am currently developing an automated counting approach using Fiji to count Collembola from pitfall trapped samples that have been stored in Ethanol (99%) since 2010. I use flotation (tap...

13 January 2021 659 2 View

Co-stain Lectin PNA FITC conjugate with an uncojugated primary antibody?

Hello, I am planning to stain retinal tissue sections for IHC and want to co-stain cones and rods. For this we plan on using a Lectin PNA From Arachis hypogaea (peanut), FITC Conjugate for cones...

12 January 2021 583 1 View

How to use Abaqus USDFLD subroutine to vary stiffness?

Hi I have a problem where I am trying to vary the stiffness spatially across a structured interface. The whole idea is to vary the stiffness vertically, with a bulk stiffness of 8GPa decreasing...

06 January 2021 262 3 View

I really need help with cov-2 pseudotyped lentivirus production. Support?

Hi, i'm desesperate. i'm trying to produce lentivirus usinf BEI resources kit NR-52948. 24 hours after transfection i detect a massive GFP expression in my 293T cells. After 72 hours i filtered...

30 December 2020 9,889 6 View

How can i estimate the total phenolic content from a plant extract?

Suggestions and recommendations are welcome. A protocol used and experience would also be helpful.

25 December 2020 9,807 4 View

Which software to use to statistically analyze Telomere Length_TRF_Southern Blot?

I am trying to measure telomere length in an ant species using the TRF method, which is a Southern blot technique. Currently, I am struggling with analyzing the images and would appreciate any...

29 January 2021 604 3 View

How do you evaluate the Transformative journal in Elsevier portal?

In recent year, Elsevier changes its policy for several hybrid journal to a new agreement policy of journal with the potential funding authorities (such as the University of Florida, Carnegie...

12 January 2021 6,034 2 View

Is there any chemical safe for sea environment, but could be used for repelling planktons and microorganisms?

As an example of Julia Child, whose first receipe was shark repelent, my team and I are looking for some chemicals which wont harm planktons but will help keep planktons from our robot in sea.

20 December 2020 9,616 4 View

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I am medical student. I want robbins pathologie fr deutsch pdf . how am I find this book ?

13 December 2020 8,136 3 View

Why do I receive the sae mesage several times?

26 October 2020 409 1 View

Do you know any examples of ethnic stereotypes reflected in literature on wooden architecture in Central and Eastern Europe?

In 19th and 20th centuries wooden architecture became very popular among researchers and enthusiasts of vernacular culture in Central and Eastern Europe. Numerous texsts by professional scholars...

18 October 2020 9,659 2 View

Literature on traditional/ancient slaughtering patterns of goats/sheep?

Any recommendations? I'm mostly (but not exlusively) interested in eastern Mediterranean and West Asia...

09 September 2020 7,344 3 View

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05 August 2020 8,976 1 View

What made English to become the language no. 1 in the world?

Why English in particular? Why not French, German, Arabic, Spanish, Chinese, or any other language?

27 July 2020 7,754 90 View

Is there a German version of the WHO Workplace Violence in the Health Sector Questionnaire?

We are currently working on a project on health promotion of employees in the home care sector. To asess the current burden of this specific group, we would like to measure the degree of workplace...

29 June 2020 7,752 2 View