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 the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 2 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

What is the best surface to culture cells isolated from a skin biopsy?

Hello, recently I am having some difficulties with maintaining the cell culture of primary cells isolated from a skin biopsy (normal and malignant). The coating of culture plates with Matrigel (a...

26 February 2021 6,151 2 View

Which test should I use in SPSS if I have two independent variables and one dependent variable that is measured using two tests?

I am researching the effect of gender and video game use on reaction times. To do this, I will have participants complete two reaction time tests (a simple test and a four choice test). I am a...

17 February 2021 9,343 4 View

Can ImageJ software be used to quantify collagen from Masson's-Trichrome stained images?

I am after quantifying the blue stained collagen in a Masson's-Trichrome stained skin section from an immune deficient mice and compared the same with its WT control. I am curious to know can...

17 February 2021 384 3 View

Does anyone know a downloadable dataset for people sitting in front a webcam?

I am working on a ML project that recognize the posture using the webcam. So, i need a dataset of people sitting in front the webcam (studying, gaming, video calling...etc)

26 January 2021 5,652 3 View

How to use PVQ Psychometric Tool?

Hello, I'm doing a research about if psychometric tools can be translated into video games. My main major is video games. So I'm an absolute newbie with psychometric tools. I have chosen PVQ tool...

22 January 2021 5,992 2 View

Non motile black dots in animal cell culture, tightly adhered to the cells along the cell periphery. Is it a contamination? How to get rid of them?

I am seeing non-motile black dots of almost equal size along the periphery of skin melanoma cell line A375. They are present in almost all the cells. They don't turn the media turbid. However...

18 January 2021 5,151 1 View

Does use of hand sanitizer negatively impact the skin microbiome?

Hello, Most hand sanitizers contain 60-80% alcohol. Alcohol destroys organisms including bacteria, fungi, protists, and enveloped viruses by breaking down the plasma membrane. In recent...

16 January 2021 6,923 11 View

I want to convert Methane gas to liquid Methanol using photocatalysis. Can you please suggest me a good paper which I can study ?

There are a number of publications regarding this, but none of them are clear and show the mechanism of gaseous Methane conversion to liquid Methanol.

06 January 2021 364 3 View