Does anybody know an epoxy resin with a low viscosity and a short polymerization time ?

I'm a trainee in a company which supplies space engines and we currently use an encapsulating epoxy resin (Stycast W67) with a low viscosity (200-300 cP) but a very long polymerization time (22...

17 April 2017 4,820 4 View

Is there a procedure that I can use to remove the N-terminal acetylation on a peptide and increase the solubility?

I am working with a series of 13-mer peptides that are quite hydrophobic. Most of the peptides do not contain any acidic or basic residues. The peptides are capped at the ends (N-terminal...

06 July 2016 6,756 3 View

Any advice on MrBayes software?

Hi everyone ! I am pretty new at Bayesian phylogeny and I just spent the last couple of days reading the manual of MrBayes software. I feel ready to use it but performing an analysis that make...

11 December 2015 793 1 View

Has anyone found a replacement for it for serum free culturing of HEK293 cells?

08 September 2015 749 7 View

Is this true that 6M GdnHCl will degrade my peptide if I try to purify the peptide using 6M GdnHCl to dissolve it?

The peptide does not contain any acidic or basic residues and it is capped on the ends. We tried to dissolve the peptide in several organic solvents. It dissolved in some of the solvents, but...

25 June 2015 9,665 3 View

Is there research on EMR impacts on flora & fauna involving technical experts to identify, assess radiation types/exposure levels/duration?

More details on the question: - It should be recent, interdisciplinary research. - Light is not included in the EMR scope. - The targeted technical experts/EMR specialists could be physicists,...

01 January 1970 7,825 4 View

I got 02 moderator values defining Johnson-Neyman significance regions. Is it an error?

Hi everyone, I am conducting research for my Master's thesis. I am using PROCESS by Johnson-Neyman to analyze my Moderator model. I test the relationship between Public Service Motivation and...

03 March 2021 2,350 2 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 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 to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

Treating Intermediate Variable in Linear Regression Analysis in SPSS?

While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...

25 February 2021 4,591 5 View