Hey, how is it possible to detect whether a change in the magnitude of the coeffcient of the independent varibale is significant?

How can I differentiate insignificant from significant changes in Magnitude of the coefficient of the independent variable after a Control variable is included in the Regression. To put it...

09 December 2020 8,317 6 View

What is the easiest and cheapest way to quantify XY/XX ratio of cells in a mixed population of human cultured cell lines?

I have an XY cell line I am measuring telomere length on, and I am using an XX cell line (with abnormally long telomeres) as an internal control. I would like to identify each separately, but that...

26 August 2019 1,290 1 View

Regression analysis - How do I check for linearity and adress multicollinearity with ordinal/categorical independent variables?

Hi Im currently doing a working with multiple regression in STATA and have a question about linearity and Linearity I'm currently going through the regression assumptions and have issues...

07 December 2018 152 6 View

Does anyone know an easy and simple method of detecting trichloroacetic acid (TCA) and/or trifluoroacetic acid (TFA) in solution?

I am investigating electrokinetic migration of these acids across a supported liquid membrane (SLM), and need to determine their presence (if any) in the aqueous acceptor phase. I am thinking...

17 October 2018 9,594 4 View

How do you standardize and enumerate qPCR reactions with different volumes?

Hey, We are testing a qPCR instrument that requires fairly large reactions volumes. To do some comparative studies, we simply used smaller reactions volumes when running comparative samples on a...

14 October 2018 8,248 8 View

How can this formula output dislocation density?

02 August 2015 2,345 4 View

Using GLM (or OLS) with a categorical predictor variable (15 countries), how do I compare with the grand mean instead of using a reference category?

I want each regression coefficient to represent (each country's) deviation from the grand mean, instead of deviation from one category (country), before and after introducing control variables....

13 August 2014 9,047 18 View

Is it possible to do Flowcytometry on frozen PBMCs from Ficoll Paque gradient - CD4+/CC7- and CD8+/CCR7- ?

Dear all I'm planning a small FC study. I want to use peripheral blood and use a density gradient to seperate into MCs (Ficoll Paque Plus). My plan was to freeze down these PBMCs at -80...

17 June 2012 381 12 View

Is there an ELISA kit for inflammatory cytokines that work on tissue homeogenates (RIPA buffer)?

I'm thinking about using an ELISA kit to measure the levels of inflammatory cytokines (e.g. TNF-alpha, IL-10, etc). We have small biopsy material from humans and wants to homeogenize with a RIPA...

17 June 2012 2,447 2 View

Pepsin Storage

Hello- I have left 100x pepsin solution at 4 degrees for a couple of months. Now I realize it should have been in the -20 degree. Has the pepsin gone bad? also, is it ok to store pepsin at that...

19 August 2010 1,633 1 View

Could anyone tell me what is the range of submillimeter wave?

There is confusion regarding the submillimeter-wave range. Many papers specify its range from 300GHz but some also consider its range from 100GHz. If I design an antenna on 122ghz what would I...

01 March 2021 516 7 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Complex wave form in ANSYS?

Is there a way to input wave speed in a complex form on ANSYS? The wave speed I need to assign a material is 325(1+0.11i) however I have been unable to do this thus far. Failing that, is there...

27 February 2021 5,969 1 View

Could you please suggest to me research in which a relation between the shear wave velocity and the degree of saturation for stone was discussed?

Hi all, I am looking for a graph or a relation that relates the degree of saturation and the shear wave velocity for the marlstone. Looking forward to your suggestions Best Regards

24 February 2021 9,690 1 View

Absorption behaviour of anechoic model?

I have modelled a unit-cell of an anechoic structure using ANSYS. The layer is silicone and has been assigned as an acoustics physics region, with an air cavity inside (the air has been modelled...

18 February 2021 4,119 1 View

Repository for capture-seq raw reads?

I am a research tech in a wildlife genetics group and my PI and I are trying to figure out how/where to put raw reads in a repository. We have capture-seq NGS from Rapid Genomics. The post-doc who...

17 February 2021 7,575 2 View

If the electron is a wave, then what is its nature? Is it an electromagnetic wave?

If the electron is a wave, then what is its nature? Is it an electromagnetic wave? Thank you very much,

17 February 2021 9,024 4 View

How to apply a voltage sinusoidal/harmonic load in ANSYS APDL?

Hello all, I want to simulate a Dielectric Elastomer Actuator DAE (an electrostatic-Structural analysis). I want to apply various voltages and frequencies into the DEA in the form of sine wave....

13 February 2021 3,261 3 View

What is the structure of a photon that can describe the interference experiments that reject the wave nature of light?

De Broglie's double-solution postulated a causal model of Quantum Mechanics. Knowledge of the photon structure was needed to model the particle part of the cause of the Double Slit interference...

11 February 2021 6,869 5 View

What is the UV-vis spectroscopy and HPLC UV detector?

I did spectrum scan to levothyroxine sodium which show highest absorption at wave length=230nm which the absorption =0.136 and it's absorption at 225nm =0.047 but when Injecting it on HPLC...

09 February 2021 1,631 3 View