How to compute correctly the heat flux in order to obtain a stable thermal/thermo-hydraulic coupled simulation ?

Dear all, I am trying to couple a simulation with two codes, say code A and code B (different discretizations). For code A we solve simply the conduction equation (solid), while in B we solve the...

24 November 2020 8,961 2 View

How do I run a western blot following co-ip?

This is the first time I do any sort of IP experiment and I was wondering if there is a certain procedure to follow for the western blot after the last elution step in the co-ip protocol. I am...

22 September 2020 3,688 3 View

How to properly normalize my absolutely quantified mRNA expression?

My PI wanted to use a standard curve to absolutely quantify mRNA expression via RT-qPCR. Her idea was to create the standard curve from a stimulated cell line that expressed the gene of interest...

19 September 2018 4,368 16 View

Can someone help with standard curve for competitive ELISA?

I used a competitive ELISA to look for collagen IV. I got the standard curve numbers. The instructions in the manual state that the data may be linearized by plotting the log of concentrations...

22 March 2018 6,633 2 View

Is there a specific method to set a Mach Zehnder interferometer for surface relief grating inscription on polymer thin films?

Hello, I have built a Mach-Zhender interferomer in order to irradiate thin films of polymer (PMMA) with an interference pattern. These polymer thin films are doped with metallic precursors, and...

25 May 2016 4,245 4 View

What initiator should I use to prepare a nanocomposite made of Cobalt nanoparticles dispersed in a PMMA matrix?

29 February 2016 6,294 1 View

Calculating the effective mass manually

I am trying to calculate the effective mass of electrons and holes manually from the band structure of a 2D system I am working on. I have only considered the maximum valence band and the minimum...

01 January 1970 4,055 3 View

How to compute correctly the heat flux in order to obtain a stable thermal/thermo-hydraulic coupled simulation ?

Dear all, I am trying to couple a simulation with two codes, say code A and code B (different discretizations). For code A we solve simply the conduction equation (solid), while in B we solve...

01 January 1970 9,673 3 View

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Which period is considered as study period in research?

Is that starting from proposal development to result writeup or just from data collection to result writeup and reporting (publishing)?

28 February 2021 910 2 View

Is there any limitation of number of variables when doing Panel Data ARDL model analysis in Stata 13.0 version?

I have one dependent variable (HDI) and 14 independent variables within the time period 1990 to 2016. when I run the command (xtpmg.............pmg) the answer is *matsize too small* then I...

23 February 2021 9,448 5 View

Which regression is best fit when moderator is categorical and dependent variable is latent in nature?

I am using categorical variables as a moderator variable, and my dependent, mediator and IV variables are latent in nature. Which regression test I can apply. As logistic regression is for binary...

11 February 2021 1,584 3 View

ETA-squared statistics used to correlate observed versus measured variables?

Can the eta coefficient be used when the categorical and the quantitative variable is dependent? E.g. in the field, I made a prediction into a category (e.g. high, low or medium) of what I think a...

08 February 2021 3,756 3 View

What is the best way to encode categorical variables in datasets with many features and avoid increasing dimensionality of the dataset?

I am working with a large dataset that has many categorical variables with many classes in each variable. I want to encode the categorical variables without increasing the dimensionality of the...

31 January 2021 6,986 3 View

Is it possible to compare two unequal sample sizes with categorical data on SPSS?

I have a small dataset collected from SMEs and I need to compare the demographic characteristics between SMEs with access to external finance and SMEs who do not have access to finance on SPSS....

28 January 2021 2,503 4 View

Study Design for 3 Interval DVs, mixed IVs?

I'm conducting a study on mental health terminology on social media for a group project. We have three interval DVs measured through likert scales and three IVs. The IVs are social media usage...

28 January 2021 2,871 3 View

S Is ordered logit models can applied when the DV span from negative to positive values?

Trying to understand changes in public transit use following Covid-19, our categorical DV includes 5 values: 1 and 2 indicate that participants reduced their used (to a large & moderate extent...

26 January 2021 5,918 3 View

Which statistical test is suitable to test if 2 explanatory variables (different scales: ordinal & categorical) predict dependent variable (ordinal)?

I'm working on survey data that is inclusive of ordinal (1-5 rating scale), categorical (yes/no), nominal (frequency response). I have reduced many ordinal variables (those in ordinal scale) to 3...

26 January 2021 804 12 View