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

Any recommendations for methods to analyze elephant space-use (using GPS) and correlating this with changes in NDVI?

For my Masters I am looking into elephant space-use and its effect on vegetation change. I have elephant GPS collar data and was going to use Google Earth Engine to obtain NDVI values. I would...

16 February 2021 7,097 3 View

As the first flagelant confraternity is mentioned one in Perugia in 1260. But, some data testify such confraternity in 1214/Zadar and 1215/Dubrovnik?

Data from Zadar's archive mention the fraternity of flagellants (dei flagellanti) in Zadar in 1214founded in the church of St. Silvester (fratalia seu scola sancti Silvestri Iadere Frustancium)....

14 February 2021 3,136 2 View

How do you annotate figures to show significance?

30 January 2021 1,008 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

Can't find an ancient zoology paper ?

I'm desperately looking for an old planarian paper which is cited here. Does anyone have an idea how to get hold of it...

21 January 2021 5,957 8 View

Genus name priority from the same publication (Zoology)?

I came across a recent taxonomic work, where two genera were synonymized. Both genera were published in a paper in 1922 by the original author who revised the family at that time. The original...

19 January 2021 1,920 4 View

Which statistical test to use to see if there is a significant difference between the vigilance of bird species at different feeders (in SPSS)?

I have gathered data on bird species visiting 4 hanging feeders in different locations and have calculated the proportion of time they have spent displaying vigilant behaviour while at the feeder....

18 January 2021 9,959 7 View

Which is the most recent and updated classification of Class: Insecta?

Based on the many publications from several decades, we came across many classifications of Insects. Among them which one is more updated and approved classification that can be used for research,...

05 January 2021 3,668 9 View

Can anyone please help me using polarizable force fieild in Amber18?

I am using force field ff02 and water model POL3. I am having difficulty in minimizing the system. In the Minimization output file after 100 steps of minimization EPOLAR = ************ EEL =...

17 December 2020 334 3 View

What was scientist thinking about Bees communication before Karl von Frisch discovery?

In the 1920s, Karl von Frisch pointed out that bees use special dancing patterns. What scientist or people think about bees communication before its discovery.

22 November 2020 1,426 5 View