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

What are advantages of NELF model?

I am trying to simulate permeation of gases in polymers. For this reson normally i use the clasic models like dual sorption model but newly i foun dthe non equilibrium lattice fluid model. It...

03 February 2021 1,203 3 View

Are virtual conferences close to the results of classic conferences?

What is the approach ratio

30 December 2020 4,701 9 View

Can someone recommend me a classic book of liquid crystals?

I am currently into liquid crystals and have no related background. Can someone tell me which book is the most instructive one to learn basics of liquid crystals? I am more interested in different...

22 November 2020 4,362 6 View

Has anyone thermodynamic and kinetic information about nitric acid synthesis?

I want to elaborate a presentation to my students of Chemical Reaction Engineering where I can illustrate them reactor design with multiple reactions, including reversible exothermic reactions. I...

28 September 2020 6,465 1 View

Could someone provide the cif file of classic organic salt/organic cocrystal TTF-TCNQ?

27 September 2020 178 3 View

Does anybody know about CAS9 variants that create a DSB in a location downstream to the PAM?

Hey, In a conference I attended, someone presented a CAS9 system that does not create a DSB in the classical location but rather further downstream than classical NGG adjacent location. I forgot...

25 August 2020 5,617 1 View

Which is the best method to extract vesicles from cell cultures?

I am planning to extract cell secreted vesicles from different type of cell cultures. There are some kit based methods available. However, I am wondering if the classical differential...

27 April 2020 5,582 4 View

What is some good scholarship on the Roman the patronus ("patron") and their cliens ("client"), as compared/contrasted to practices in Ancient Greeks?

What is some good scholarship on the Roman the patronus ("patron") and their cliens ("client"), as compared/contrasted to practices in Ancient Greeks? And what if any did this factor played in how...

27 March 2020 9,922 2 View

About the Martinelli-Bochner formula?

What do you think: is the Martinelli-Bochner formula proved in classical domains and matrix domains, as well as in Siegel domains?

20 March 2020 6,934 2 View

Vision of the university of the future?

There is an ongoing discussion with colleagues about A VISION OF THE UNIVERSITY OF THE FUTURE. The main concern is how to improve university education and what are steps and directions for such...

03 March 2020 265 12 View