What tests for: 1. differences between continuous variables when grouped with different categorical ones; 2. significance of potential relationships?

Hello. I was wondering if anyone had suggestions in terms of what exploratory analysis to carry out for my dissertation with the following data. I measured N=26 participants pre and post an...

09 August 2020 5,256 5 View

Anti-His Antibody binding everything on a western?

Hello all, I've been expressing some His-tagged proteins in E.coli that appears to be going just fine based on how the SDS-PAGE gels look, so I wanted to confirm with a Western. I transferred my...

22 July 2020 5,255 5 View

Is it possible to run a Mediation Analysis with Process when the dependant variable is a percentage value?

I measured the DV by presenting the participants two product options where they had to choose one of them. I repeated this 20 times. After that I calculated the percentage value of choosing the...

05 November 2019 9,978 3 View

How to codify a sequence DNA correctly for DNA barcoding analysis?

Hello, I am starting a new project with DNA barcoding and I am not sure how to codify sequence DNA. In this project we are using the following molecular markers: rps16-trnk, rpl32-trnl and...

26 July 2018 5,797 2 View

Is it possible to impose a cpu limit on executors in Apache storm?

Each executor is a thread inside a worker process. Is it possible to set some rule such that all the executors on a machine execute for (roughly) equal time? so that one executor is not hogging...

12 February 2018 8,355 1 View

Hi ,i am currently conducting a research on the effects birth order has on personality and achievement motivation but i am having difficulties?

the population is University students but i cant find the appropriate questionnaire with scoring attached to measure achievement motivation.Please can someone help me with the appropriate means to...

25 October 2017 1,329 3 View

How do you do the normalisation of X protein to study the effect of a protein Y mutation on X protein level by western blot?

I need to study the effect of the protein Y mutation on the levels of a protein X. So I over-expressed the protein X under 5 conditions: (1) not over-expression of protein Y (2) with...

07 June 2017 5,252 4 View

Can someone identify this tree?

This tree is from Volgograd Region, Russia. It was found in the Volga flood-lands.

02 October 2016 9,632 15 View

Is it possible to load 120 ug of proteins in a protein gel?

I need to load 120 ug of proteins in a protein gel. Do I need some precaution for the protein migration and western-blot?

11 July 2016 624 4 View

Contaminated liquid culture of yeast turns red upon addition of bleach, why ?

The medium is YPAD, and it is probably contaminated with bacteria. I suppose this kind must synthesize some pH sensitive molecules as It is reacting with bleach but I can't find any information on...

09 February 2016 4,101 3 View

Is stone a sustainable material? Is it a sustainable approach to use natural stone waste in architecture?

I'm designing a zero-waste restaurant and considering using marble waste to make some tables and a bar countertop. My clients think it's not "sustainable enough" and I would like to have more...

01 March 2021 4,326 7 View

How the values of errors can be calculated for thermodynamic data?

I have calculated thermodynamic parameters for surfactant solutions in aqueous and mixed alcoholic solvents. I want to calculate the value of errors in the data and represent it in the table along...

22 February 2021 239 2 View

How to get/count refractive index in gasses?

20 February 2021 8,202 6 View

How to address mutual causality using Propensity Match Scoring using a panel dataset?

Hello dear researchers. I have a panel data set where I regressed innovation on director tenure. Though, I employed GMM and lag of the director tenure to address the endogeneity and reverse...

08 February 2021 5,809 1 View

How to create the context-mechanism-outcome configuration (CMOc) in the realist methodology?

In the realist methodology (especially by Raymond Pawson et al), the CMOc is a common structure to explain what works, for whom, in what circumstances, and why? I'm always asked about the...

08 February 2021 2,792 1 View

Hello, can you recommend a method to remove serial correlation from path coefficients (standardized regression coefficients)?

I would like to measure the causal effects among variables in a path model, but the variables (time series) may be serially correlated. I'm looking for a method to remove or otherwise manage the...

02 February 2021 210 3 View

Cross-lagged panel analysis and sample size?

I want to estimate the causal relationship between two latent variables over time using structural equation modelling. both latent variables are measured according to different indicators...

31 January 2021 3,777 5 View

How do you annotate figures to show significance?

30 January 2021 1,008 3 View

How to use multiple tables to generate a graph in Graphpad Prism?

I have two different tables: one for metabolic activity of the cells in a plate, the other one is the Total DNA assay from the same plate. I need to generate a graph which represents metabolic...

29 January 2021 3,294 5 View

Regarding to presentation of pairwise comparison of data?

22 January 2021 8,648 1 View