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

Does anyone ever solved this following Matlab error : "Error using imaqdevice/start (line 95) pointgrey: Failed to stop the camera acquisition." ?

I use Matlab 2014b to capture some images with a PointGrey camera connected with USB3 port. I initialize the camera in a function which basically execute these followed lines : vid =...

22 February 2021 6,386 1 View

Whic Type of Thermal Camera is Good to use in animal research?

Hello dear researchers I want to use a thermal imaging camera to livestock study. I wonder which type to use. If you know or used a good type please comment or insert its online link in...

29 January 2021 4,163 4 View

How to do fishnet analysis on non-geological data in R stat software?

Hi All, I am working on a study that would require to measure the movement activity of experimental mice. For this to do, I am monitoring the mice with thermal camera, and I can get the...

24 January 2021 7,399 1 View

Why green band returns more inliers than NIR band during image registration?

Hello I'm using image registration over the bands of the micasense red-edge camera. Using RedEdge band as the fixed image. After removing inliers I can notice that inliers of the NIR band are...

13 January 2021 3,980 2 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

Could you recommend an inexpensive camera for a prototype DIC system?

I was thinking of choosing Raspberry pi HQ 12MP. and what software do you recommend. I am working on a measurement system for a plate with an area of approx. 500x500 mm2

30 December 2020 3,064 2 View

Why does using lens (achromatic doublet lens) for imaging detection onto camera affect magnification in Interferometric Scattering (iSCAT) microscopy?

Hello every scientific explorers!! Recently, I have been interested in Interferometric Scattering (iSCAT) microscopy, the scattering-based imaging microscopy. One of the problems I am facing is...

27 December 2020 8,092 2 View

Drones used to study canopy species?

Has anyone used a drone equipped with a microphone/camera to study the acoustic behavior of canopy species of frogs and/or birds?

21 December 2020 7,664 17 View

What are the tools and techniques for making Custom dataset for YOLO?

Dear Research Community. I am new to the field of deep learning based object detection techniques. At this time, I am working on a project which will not use front-facing camera to detect people....

13 December 2020 957 3 View

Any image binarization technique focusing on objects?

Hello, I am looking for technique with codes where if we have been given any camera captured image it will binarize only the part which is in the focus of the camera and erase the part on the...

06 December 2020 2,719 3 View