How to find statistical difference between category counts in a multiple-response survey question?

Which statistical test is appropriate if we want to look for statistical differences between total counts for each category, if the subjects can select multiple categories in their response? The...

23 January 2021 6,926 3 View

Any experience with alomone labs antibodies?

I am looking for APJ receptor antibody for immunofluorescence in paraffin embedded coronary arterial tissue sections. Abcam discontinued the APJ antibody which used to work for us. Alomone labs...

22 January 2021 2,000 5 View

Is it possible to add hierarchical porous Cu/Zn-nanoparticle@carbon materials into a carbon paper based gas diffusion electrode (GDE) ?

26 November 2020 5,075 1 View

Tips for students on how to take care of a work-life balance during a covid19 pandemic ?

Students asked me for advice on how to deal with work-life balance during a lockdown. Some of them work and study from home. Do you have any helpful suggestions? I found an article that suggests...

29 October 2020 5,994 2 View

Best tips for engaging students during remote lectures ?

The academic year has begun, and at least for now it will be coordinated remotely. What ways do you have to engage students' attention during remote lectures? I was thinking about asking...

04 October 2020 9,988 38 View

How do I create a matrix file from my variant frequency to create a sequence logo?

I would like to create a sequence logo from my variant frequency (short 15bp DNA sequence). So it's not the normal alignment of several sequences but only ONE single sequence where I would like to...

31 March 2020 1,405 8 View

Can individual, dyadic and triadic interviews be analyzed together?

I am conducting a multiperspective interviews on cultural competence in healthcare institutions (management level). Some interviews are individual, but in some institutions, they expressed the...

03 May 2019 4,387 4 View

RNAlater reaction with PBS?

Currently planning to make hookworm protein extract with frozen adult hookworms in RNAlater solution. I am planning to first remove all of the RNAlater and wash in 1X PBS and eventually gauge...

15 July 2018 7,075 1 View

Flow Cytometry protocol for Tregs detection (CD4+, CD25high, FoxP3+) in fresh isolated horses PBMCs ?

Hello, I'm Trying to mark Tregs population in Horses, I adapted a protocol used to mark Tregs in dogs, and It worked at the beginning. But after 7 months I started my experiment and I haven't...

25 May 2018 7,953 5 View

How to use MODIS for calculating Leaf Area Index in Certain Places ?

I need to use leaf area index data for succession analysis in Mt.Papandayan, I would like to ask several questions : 1. How to extract MODIS data and present it ? 2. Is there any additional...

27 November 2017 622 2 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Defining mixed model with repeated measures data?

HI all, I have been working with daily diaries data ( 6 emotions of which 3 positive and 3 negative) were assessed for 30 days. These observations (1level data) are then nested within subjects...

13 February 2021 1,810 3 View

How to determine the false positive sequencing result?

Hello Researchers. I am conducting a study on the determination of WNV on mosquito samples. I run nested PCR. Bands were shown to almost all samples during carrying out gel electrophoresis. After...

17 January 2021 3,263 11 View

Power based on past research in multilevel model?

Hi I want to replicate a published article that uses a multilevel model (participants nested into groups). I want to see the sample size I need to achieve an 80% power. I saw the simr r package...

06 January 2021 2,984 6 View

A three level hierarchical data structure in multilevel modelling, for multiple response question?

Im refering to Andy Field's example in his book Discovering statistics using SPSS, 3rd edition, page 728, where he gives an example of a data structure with level 1 variable is a memory recall...

26 December 2020 9,717 6 View

COMSOL: Sequential optimization / update parameters after optimization run?

Hello to the COMSOL experts, is it possible in COMSOL Multiphysics to update the model parameters after an optimization based on the results of these optimization? (Ideally without using Livelink...

13 December 2020 7,927 4 View

How to handle Missing Values for Skipped Questions (Systematic Missing) in R ?

10 December 2020 435 4 View

Why does a Nested PCR protocol amplify samples and not amplify positive control?

I have this problem. Today I used a new positive control of an isolated NC-1 strain in cell culture and the problem persists. I performed a serial dilution test to test the sensitivity of the...

08 December 2020 6,252 2 View

How to avoid the formation of traces and dimers in DNA gel electrophoresis?

07 December 2020 3,052 3 View

How to standardize and obtain a good PCR reaction with samples with a low and variable amount of DNA?

I work with the detection of N. caninum DNA in milk samples in milk samples. The DNA concentrations in my samples range between 2-90 ng / ul. I would like to establish and standardize a final...

01 December 2020 8,792 3 View