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

Change of First name?

In some publications you refer Deivid Chica (with Barranco) but the true first name is Maria Dolores Chica , in spanish Ma. Dolores Chica. Before I answer yes is an author Deivid Chica, but...

18 February 2021 5,004 3 View

Participation in questionnaire for PhD Thesis, any English, Chinese or Spanish speakers?

Hello! I am looking for Spanish, English and Chinese native speakers to participate in my final survey for my PhD thesis. https://claudiomastrangelo4.wixsite.com/phdlinguist1/research This is...

01 February 2021 4,177 10 View

What is the best Quality of Life questionnaire for chronic patients?

Hello! I am looking for a SHORT questionnaire/scale to measure Quality of Life in chronic patients (e.g. fibromyalgia, or multiple sclerosis). Ideally, validated for English and Spanish speakers....

22 December 2020 9,962 4 View

Can you recommend works in Spanish or English on botanical gardens as educational and learning contexts?

Can you recommend works in Spanish or English on botanical gardens as educational and learning contexts? Thanks very much!!

20 December 2020 5,943 7 View

Is there any index number for first author in journal article like h index?

In every research paper, first author contribution is comparatively high. To tribute their work is there any index number for an author acting as first author in different papers?

15 December 2020 8,231 14 View

Can you recommend a task-based material that can be used to compare with the currently used textbooks in English teaching?

Hello everyone, It was my first experience for a research. I plan to explore the differences in grammar teaching in the two kinds of books: one is task-based and one is currently used in a...

29 October 2020 5,495 4 View

Which is the best plagiarism checker free software or webpage for student?

The students from the least developed country can not afford the expensive plagiarism checker tool. Further, its almost impossible to finance the paid version. Could you suggest/find the best...

05 October 2020 1,658 20 View

I would like to have a person that helps me in the traduction of my articles?

01 October 2020 7,771 5 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

What aspects of linguistic intelligence does "Verbal IQ" measure?

As most will intuitively know, language ability is an umbrella term that comprises various different categories: some people are better at grammar, some at vocabulary and some at spelling. IQ...

24 July 2020 9,727 1 View