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 perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

Is it safe to open educational institutes amid new cases of Covid-19 without completion of vaccination??

Vaccination is in its First phase in India. The front line is to be vaccinated yet. In this situation opening of institutes may be dangerous for the life of children.

01 February 2021 660 2 View

In your opinion, Which are conditions more dangerous for the peoples of the world?

In your opinion, Which are conditions more dangerous for the peoples of the world? Ignorance of peoples, Poverty of peoples, Enslavement of peoples, Epidemics spread. Share us your opinion, and...

21 January 2021 5,974 80 View

Among all the environmental pollutants globally how much % out of 100% is due to chemists?

Environmental pollutants and hazardous are major issues through which the modern world is suffering. Among all the environmental pollutants and hazardous materials how much contribution is from...

31 December 2020 6,039 3 View

Among All the environmental pollutants how much % out of 100% are due to chemists?

Environmental pollutants and hazardous are major issues through which the modern world. Among all the environmental pollutants and hazardous materials how much contribution is from chemists (out...

31 December 2020 833 7 View

What are the challenges for organic farming and its commercialization ?

Knowing the overall hazardous effect of chemical farming too we are not getting away to organic farming, even on a small scale or on a large scale in too so what will be the challenge during the...

23 December 2020 2,274 24 View

What are the categories of exposure, sensitivity, and adaptive capacity in relation to vulnerability to climate change?

In conducting a Climate Change Vulnerability Assessment at the household level using a survey questionnaire, there is a need to ask participants how they characterize their experience of various...

17 November 2020 1,544 1 View

What is New Next Generation Attenuation Relationships (NNGAR) and how are they different from other attenuation relationships?

Dear researchers The provisions of ASCE 7-10 states that New Next Generation Attenuation Relationships (NNGAR) has been used in the process of Probabilistic Seismic Hazard Analysis (PSHA) to...

15 November 2020 1,132 4 View

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04 October 2020 6,695 5 View

What methods are used to stop the rate of dissolution of magnesium (its alloy) in physiological solution?

Hello colleagues, It is known that rapid dissolution of orthopedic implants is dangerous. What methods are used to stop the rate of dissolution of magnesium (its alloy) in physiological...

29 September 2020 1,877 5 View