Could expired BSA a problem for tissue culture?

Hi, I want to ask if for you using expired BSA powder (expired in 2014 but always in the fridge and protected from light) could be a problem for my bovine primary follicles culture in situ (so...

01 December 2020 8,650 2 View

Neyman - Scott Cluster Process: are these nonsensical parameter values ?

I am trying to fit a cluster model in spatstat in R using the locations of archaeological sites. The resulting parameters values are: trend: 2.514429e-06 kappa: 1.606992e-08 scale: 481.5851 mu:...

18 November 2020 2,993 3 View

Flow cytometry from harvested non-uniform tissue?

Hi everyone! I want to identify by flow cytometry the immune cells found in the brain with a localized injury. My hypotesis is that the injury will attract more/different immune cells respect to...

27 October 2020 748 2 View

What do you use to avoid insect collection infestation?

At the museum we are currently dismissing Paradichlorobenzene and Naphtalene. we are looking for other effective chemical or similar.

21 October 2020 9,553 11 View

Issue with plasmid cloning?

22 August 2020 1,687 15 View

Is there any commercial or open source DIC (2D or 3D) software which is capable of working on field photographs or satellite images?

Is there any commercial or open-source DIC (2D or 3D) software which is capable of working on field photographs of terrain or satellite images for deformation and strain analysis in geophysical...

11 August 2020 4,216 3 View

How to perform in silico peptide cyclization reactions by ChemAxon Reactor?

24 April 2020 9,398 1 View

Does the EGFP epression in a BAC-EGFP mouse correlate with the amount of promoter gene expression?

Hi, I am analyzing immunostainings of 5-HT2AR-EGFP transgenic mice (Htr2a Gene and 5-HT2A Receptor Expression in the Cerebral Co... ) and I have a doubt regarding the conclusion I can draw about...

21 July 2019 209 1 View

Is it possible to "paste" two functions in COMSOL?

Hi everyone, here is the description of the problem. I have a rectangle with some circular holes in it, the inner part of the domain (denoted with D) is defined by the difference between the...

07 July 2019 1,635 3 View

How to avoid for order effects in an experiment with 20 participants and one task with 12 trials?

Hey, we are studying the relationship between trait anxiety and spatial navigation. We have 20 participants and one navigation task with 12 trials. How to avoid for order effects among the trials?...

07 April 2019 9,479 3 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

How long does it take to get a modeller(for homology modelling) license?

I submitted my e-mail address on modeller website to get a license. The problem is that, the site cannot process my school e-mail (ewhain.net). I submitted my Lab website and school name so that...

25 February 2021 9,054 3 View

Am i able to conduct a factor analysis on each of my subscales, as opposed to the whole scale?

My psychometric scale contains 38 items in total, with 4 subscales (20, 6, 6 & 6 items respectively? Can i run a factor analysis for each subscale rather than the scale as a whole for the...

24 February 2021 8,856 8 View

Is it mandatory to specify Subjects Combinations in Generalized Linear Mixed Models (SPSS)?

Hi all, I have data with two levels: lets think of the classic example of students and schools. When running the analysis in SPSS and selecting the Random Effects, we can select (we can or we...

24 February 2021 7,379 4 View

What are alternatives to factor analysis for a small sample?

My sample size is too small to conduct a factor analysis. I created my own psychometric scale for measuring Effectiveness of Support, which contains 38 items (4 sub-scales) Im really struggling...

23 February 2021 9,287 12 View

How do I collect online measures in a same-different task?

The same-different task requires to subjects to indicate whether a pair of stimuli seen or heard are the same (say AA or BB) or different (say AB or BA). Researchers often collect offline measures...

20 February 2021 9,226 2 View

Database of European Football Players Salaries ?

Hello everyone, I am interested in writing about a dissertation about the wages of the football players of the 5 main leagues in Europe. I wanted to know if someone had an up to date data base...

17 February 2021 8,847 3 View

How many indicators do I need to represent a latent construct?

Hi folks! We did a large survey and planned to use 3 indicators to represent a latent construct (Sense of Place/SoP) in a latent regression model (structural equation modeling). However, one of...

15 February 2021 7,705 3 View

Various schools have emerged in the study of comparative literature. Mention the most prominent of them in a nutshell.?

Various schools have emerged in the study of comparative literature. Mention the most prominent of them in a nutshell. And he talked about one of them?

09 February 2021 1,099 8 View

Science Teacher's Attitudes Towards Career Learning Index among Senior School Students in Chemistry?

Full discussion of this project topic

09 February 2021 2,534 3 View