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

Theoretical computer virology ? is still alive ?

HI Everyone! I am asking to know by you, expert in cybersecurity and mathematics, if Computer virology (the one of Cohen and Andler) is still an active field of research. That research made in...

08 February 2021 7,613 6 View

Can A. thaliana splice algae genes?

24 January 2021 329 2 View

In opensees is the ReinforcingSteel material sensitive to units of measure?

20 January 2021 7,043 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

Can anyone direct me to a paper or chapter that discusses calculating sample size in a self-selecting survey study?

Our study is investigating clinical knowledge in a specific area in healthcare workers at a large metropolitan hospital. Participants will self-select to complete the survey via email invitation...

11 January 2021 7,934 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to include original NMR data in a manuscript?

hello. i am junior researcher. I received a comment from a reviewer that he could not find NMR data in my submitted paper. I had included the NMR graph with explanation and formula to calculate...

27 February 2021 734 4 View

Why the nucleic acid gel melted after running for 30min?

Hi all, I proceed with nucleic acid gel electrophoresis recently several times, but a wried phenomenon is they always melted after running over 30min. My gel concentration is 1% percentage...

22 February 2021 9,896 3 View

Sound transmission loss (Acoustic Metamaterial)?

My design contains three parts. A silicon rubber membrane is placed between upper and lower part. I want to calculate sound transmission loss by using comsol Multiphysic. There are lots of...

05 February 2021 466 4 View

Can anyone recommend me a NMR Handbook?

Hi, I've been searching for a NMR Handbook with 29Si chemical shifts information but I can't find one. Also I've tried to find an online database with that kind of info but I have no lucky. Can...

02 February 2021 307 3 View

Whether L version and D version peptidesshould have identical NMR, especially in the state of self-assembly?

Whether L version and D version peptides should have identical NMR, especially in the state of self-assembly have to have identical NMR? How to use HRMS to confirm L version or D version...

01 February 2021 6,756 4 View

RNA extraction from exocrine pancreas?

Hi everyone ! Does anyone have any experience in extracting RNA from exocrine pancreas (which is very high in RNAse)? The pancreas is frozen tissue. I wonder if RNAse is also high in the nucleus,...

31 January 2021 390 2 View

What is chloroplast capture through introgression?

The nuclear data inferred Hedysarum as a non-monophyletic lineage, whereas plastid sequences supported it as a monophyletic group. One of the reasons for this is chloroplast capture through...

25 January 2021 8,559 3 View

How do you interpret and understand 11B 3Q MAS NMR graph?

I am a novice to NMR and need help in understanding what i am looking at in terms of 11B 3Q MAS NMR graphs. Any resources for beginners would be helpful in interpreting the data. Literature only...

20 January 2021 2,648 3 View

How can I do antigen retrieval for proliferative markers (MCM2, Ki67 etc) While preserving a sensitive endogenous reporter?

I am trying to do antigen retrieval on mouse brain sections to stain for proliferative markers like MCM2, Ki67, PCNA etc on tissue that has mCherry conjugated to a transcription factor of interest...

18 January 2021 1,023 3 View