23 January 2020 3 7K Report

I am working on a grant proposal for undergrad. My idea is to try to identify the process by which crested geckos (C. ciliatus) undergo parthenogenesis, and why it often fails. I have read that parthenogenesis in reptiles sometimes occurs as a result of hybridization.

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Why is chitosan insoluble at lower pH outside the normal pH solubility range?

The amine group need to be protonated for Chitosan to dissolve in water, why then at pH lower than say 4,5 does the chitosan drop out of solution?

15 May 2024 4,193 2 View

Inquiry about Simbiology use of Matlab?

Dear Fulden: I am starting to use the Simbiology interface of MAtlab and I found out online that you are a specialist in its use. I wish to ask you a question. I have already learned to create...

07 February 2024 6,487 1 View

Difficulties forming collagen hydrogel?

Hi, I am attempting to prepare collagen hydrogels using Corning® Collagen I, Rat Tail (high concentration), which is supplied in liquid form in 0.02 N acetic acid. My objective is to create a...

23 January 2024 8,513 1 View

Krippendorff's alpha for two raters, many participants, with many many variables?

Hi all, We analyzed a qualitative dataset with short responses to 4 "fill in" items from over 250 people. We created 90 codes that can be applied across all the data (multiple can be applied to...

27 November 2023 2,154 0 View

Can ImageJ be used to measure the area/diameter of thyroid follicles?

I would like to measure the area and diameter of thyroid follicles on a photomicrograph using image J (see attached image). Does anybody have a simple method for doing this given the large number...

20 September 2023 9,945 1 View

Does anyone has script to extract gridded timeseries data from Google Earth Engine for satellite based precipitation products?

I am looking for a script to extract gridded timeseries data from Google Earth Engine for CHIRPS, PERSIANN and PRISM products, does anyone have any solutions? Much appreciated.

10 February 2022 410 3 View

Mega-Analysis: how can I combine/standardize different dependent variables for analysis?

I have a series of six studies in which all the stimuli and independent variables (conditions in the experiment) are the same but the DV in the experiments are different. For half of the...

27 July 2021 6,659 3 View

How to use CRISPR for amino acid substitution?

Hello, I am new to genetic editing and would like to ask en masse to see if anyone would have knowledge. I am studying a single amino acid mutation in a protein (glycine to serine) that is common...

21 May 2021 393 0 View

How to analyze only one case in SPSS?

Hello, I hope I find you well. Can someone help me with the following issue? I have an SPSS file with the results of a survey where the participants where subjected to 2 conditions and the...

16 March 2021 3,839 3 View

How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 1,470 3 View

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