24 August 2017 1 254 Report

I am isolating EDL muscles in c57 mice and am subjecting them to stretch and electrical stimulation to measure specific tension, PSCA, total force, and force recovery. 

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Conversion of Odd Ratio of log-transformed variable to OR of original variable in logistic regression?

I have retrieved a study that reports a logistic regression, the OR for the dichotomous outcome is 1.4 for the continuous variable ln(troponin) . This means that the Odds increase 0.4 every...

14 November 2023 8,513 3 View

Convert odds ratio of a regression with a continuous variable, to OR of a dichotomous variable?

I have the OR of a logistic regresion that used the independent variable as continuous. I also have the ORs of 2x2 tables that dichotomized the variable (high if >0.1, low if < 0.1). Is...

13 November 2023 8,230 4 View

Why does light transmittance increase with wavelength in Zirconia?

In my 3D printing of zirconia research, I have found a common trend to be an increase of transmittance (%) with increasing wavelength for my sintered samples. I have attached one example plot of...

25 January 2022 4,391 1 View

Ansys - Accurate Simulation of slow Strain rate Tensile Testing?

Is there a best method for simulating a tensile test with a strain rate of 1mm/min that experimentally took minutes while obtaining accurate break results? Is it necessary to run at a specific...

03 August 2021 3,221 2 View

In psychometrics, what are some quant. methods to examine several competing operationalizations of the same construct to see which is most 'valid'?

Hi all, I’ll paste the more specific version of the question below before unpacking what I’m asking: In psychometrics, what are some established quantitative methods to examine competing...

13 January 2021 2,937 3 View

How can percentage change over time be assessed/analyzed with multiple time points without the sample size (or any other info.) at each time point?

Hi there, Please see the attached table for context. Please note that each year they were sampling new freshmen (i.e., not within-subjects longitudinal design). So, the authors of a book I read...

14 October 2020 6,698 3 View

What is the best way to determine the optimal polymer additive blend?

For background: We have a polymer and are looking to adjust its thermal and mechanical properties to resemble the properties of a commercially available polymer to present it as a viable...

17 August 2020 2,580 5 View

Interpreting confusing SPSS logistic regression output with categorical IV (3 levels) and a dichotomous DV?

Hello! I ran a logistic regression with a categorical IV (control, low experimental, high experimental) and a dichotomous DV (no/yes). RQ: Were participants in the low or high experimental...

01 February 2020 454 2 View

Injection Molding Simulation - Where to find Elastic Modulus of Novel Polymer?

I am looking to simulate the injection molding process for tensile specimens of a novel PHA. The simulation requires elastic modulus and shear modulus as parameters which I don't believe can be...

24 June 2019 2,235 2 View

Increase Hydrophobicity of Glass Substrate ?

Hi, I'd like to increase the hydrophobicity of a glass substrate (or lower the surface energy) without adding any coatings / layers. What are some common methods to achieve this?

27 January 2019 708 5 View

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