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

Anyone from Neurosurgery has accessed lateral ventricular through Tubb's point on living patient and how was the experience. outcomes or complication?

I read about Tubb's point which is described as Emergency access to the brain ventricular system if intracranial pressure is raised enough to cause herniation. it was performed via a spinal...

29 October 2019 8,425 3 View

Anyone from Neurosurgery has accessed lateral ventricular through Tubb's point on living patient and how was the experience. outcomes or complication?

I read about Tubb's point which is described as Emergency access to the brain ventricular system if intracranial pressure is raised enough to cause herniation. it was performed via a spinal...

09 October 2019 1,161 2 View

How to control bleeding from edges of dural sinus as commonly encountered while openig the dura inorder to part of craniotomy proedure of mass loacte?

Opening of the dura as part of craniotomy proedure for surgical management of intrcranial mass loacted adjioining dural venous sinuses carry risk of brisk venous bleed. How to control...

05 June 2018 9,567 0 View

Please help, Why does fiber-optic pressure transducer get very variable and highly improbable readings after being submerged in water?

We recently bought a fiber-optic pressure transducer from Opsens (the machine is called Lifesens). We ar einterested on using it to measure intracranial pressure in vivo. However, we had just...

13 May 2018 6,215 2 View

Can environment factor(s) play a part in affecting intracranial hypertension?

For example, can the temperature of external surrounding affect the state of cerebrospinal fluid in the brain which in turn leads to intracranial hypertension?

11 December 2017 2,978 3 View

What could be causing excessive tissue growth after making a cranial window in mice?

We are experiencing a problem after our cranial window surgeries where after about 2 weeks there is tissue growth that occurs which makes imaging through the windows very difficult with two photon...

05 June 2017 4,806 5 View

Is it possible that keeping normal physiologic parameters including pH,PO2,PCO2, glucose, HR or RR during 4 hr isoflurane anesthesia in neonatal mice?

03 April 2017 524 0 View

Appropriate Arterial Windkessel model? Series inertial element or parallel with the characteristic impedence? Literature has both. What's Correct?

01 February 2017 2,782 1 View

What is the best method to obtain contour plot from a set of data points?

I am performing CFD analysis for intracranial aneurysms. I have an array having x,y,z coordinates of the cell centers on the blood vessel surface and corresponding Oscillatory Shear Index data. I...

16 August 2016 2,200 3 View

What is the best method to obtain contour plot from a set of data points?

I am performing CFD analysis for intracranial aneurysms. I have an array having x,y,z coordinates of the cell centers on the blood vessel surface and corresponding Oscillatory Shear Index data. I...

07 August 2016 5,138 4 View