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

How to calculate the annealing temperature of a primer pair?

I have to amplify a gene and my primers just reached. The Tm for Forward primer is 64.2, and that of reverse primer is 65.5. Can some one suggest how to get the best annealing temperature? Thanks...

01 March 2021 360 7 View

Is it okay to mention you distributed your qualitrics study link through social media sites?

Just want to be clear and know it is okay to say I have distributed the qualitrics link through social media such as Facebook, Instagram and Twitter to ensure my target audience is reached in my...

21 February 2021 5,143 2 View

Who are the possible experts I can reach out to regarding the reseach topic: Activated Carbon as Water Filter?

Hi! Me and my team mates are currently new in doing a research study. We do not have any previous experiences in research. And we just wanted to know what type of experts (the field they in) can...

19 February 2021 9,596 4 View

Comsol Maximum number of Newton iterations reached?

Comsol is investigating deformation due to gravity. Gravity is applied to the nanosheets to check for displacement and stress. If I input the Young's modulus of the channel to about 1 [GPa], the...

15 February 2021 6,027 3 View

What parameters of anodizing I should use?

19 January 2021 3,792 3 View

Can anyone help for the content validity of my psychological test?

Good day! I am in the midst of completing my test development requirement under the Psychological Assessment subject. I was wondering if anyone can help me reach experts or psychology graduates...

14 January 2021 1,536 4 View

Marker Set for 3D Motion Tracking of Upper Arm during Pointing Task?

Does anyone have recommendations of a marker set for 3D motion tracking of the upper arm during a pointing task? Most studies I have come across have focused on reaching. I plan to use Vicon Nexus...

12 January 2021 3,198 1 View

Do drugs that are injected i.t in rats reach the supraspinal system and how long does it take to clear them from spinal cord?

I am injecting intrathecally (between L5-L6) , in rats, cannabinoid analgesics and I was wondering if they can reach the brain and have effects there as well ? Also I need to pretreat with...

07 January 2021 5,397 4 View

Homeopathy is within the reach of most of the financial class?

Greetings. I personally have taken homeopathy medications and found it effective in curing. I do not know if it is effective in all kinds of diseases, but it is within the financial reach of all...

02 January 2021 9,904 5 View

No title

What are the technicalities involved ? What are the reasons ? Can we share some facts on this

31 December 2020 5,698 5 View