Recommendations on CO2 Resistant Rocking Shaker?

A certain protocol we have developed requires the use of a Rocker/Rocking Shaker in which our dishes with cells are maintained in the incubator. The rocking is essential to the protocol but we...

09 February 2021 3,291 1 View

Do you consider it is important to vindicate Spanish as language, in scientific issues and publication of scientific articles?

03 February 2021 3,756 4 View

How to calculate the difference in the electron density of a dimer and its monomers?

Hello, I need to calculate the difference of the electron density of a dimer and the the sum of its monomers. I tried G09 without success, even using nosymm in all calculations. The problem...

15 January 2021 9,537 3 View

How to interpret hierarchical regression when a predictor is no longer significant after new variables are added?

Hello everyone: What does it mean when a variable is significant in one step but then in the next step it's no longer significant? For example, in this article...

29 November 2020 7,354 3 View

What are the environmental variables that influence the Northeastern gray whale population?

I am currently working on my M.Sc. thesis studying how climate change affects the presence of the gray whale in one of its main breeding areas in Mexico. We have considered temperature,...

16 November 2020 8,944 3 View

How to estimate the optimal cutpoint for a binary outcome in python?

Hello everyone, I have a dataset of diabetic patients which has been used to train an xgboost model in several outcomes such as stroke, amputation, and more. Originally we used the continuous...

21 September 2020 4,970 3 View

Does anyone has achieved the installation of gromacs plugin in PyMol, complete in Linux, with its graphic interface?

I am using Ubuntu 20.04 and I have PyMol installed, with a license. But it has been impossible to add the repository ppa:makson96/dynamics. Even downloaded from github, the package with the...

20 September 2020 6,870 1 View

How to perform power analysis for a one-way ANOVA in R when treatments variances are not exactly the same?

Hi! I've been trying to perform a power analysis for a one-way ANOVA in R using the pwr package. The equation that is employed for this is based on Cohen's f and assumes that variances among the...

16 September 2020 6,098 3 View

How do you find the electrons that occupy a particular orbital in VASP?

I think this question has already been presented here on this forum, but I was not very clear. I'm running VASP calculations involving a mixture of transition metal atoms like Fe, Mn and Co in...

07 September 2020 7,228 3 View

Why doesn't my dbRDA show all the environmental variables considered?

I am performing a db-RDA in R using the package Vegan and the function capscale. I have taken into account 24 environmental factors but the program only considerate 7 of this factors. I have 54...

26 August 2020 919 6 View

How to incorporate Monte Carlo simulation in for a real trading data?

Hello, My area of research is to valuate Exchange option (Margrabe option). I am looking for Monte Carlo simulation technique that can be applied to some real trading data. I have evaluated them...

05 February 2021 1,605 4 View

What is efficacy of Solar Power use in primary Aluminium Smelters ?

It requires higher electrical energy to produce primary Aluminium . Most of the energy source is fossil fuel responsible for GHG emissions. Hyro power is also another source for many. Solar is...

04 February 2021 8,046 3 View

How to test the equality of two proportions with multiple samplings?

02 February 2021 9,574 5 View

Which statistical test to use for comparing percentages between multiple groups?

Hello everyone! I am looking for some statistical help! I am working in in vitro micropropagation and one of the aspects that I am studying is the rooting of plants in 10 different growing media....

14 January 2021 7,575 5 View

How to generate ECFP hashing folding data?

I'm trying to convert chemical structures to ECFP data. Buy, I have a problem about folding step. I understand all of the process about generating ECFP data though D. Rogers and M. Hahn's paper...

09 January 2021 7,454 2 View

Do you know what happen in reaction between Ni2SO4.6H2O and DMG (dimethylgolyoxin)?

I want to use DMG as a reagent for detecting Ni in a solution. in their reaction they form a complex together which color is pink. I attached a picture of the reaction. my problem is I can`t find...

01 January 2021 7,200 3 View

Difference in meaning between charge transfer resistance and activation energy (thermodynamic or kinetic?)?

Dear everyone, I have a question about the difference between the charge transfer resistance and activation energy obtained from the electrochemical impedance of the secondary battery. As...

23 December 2020 6,446 2 View

How would you scale intra-day returns to daily returns?

16 December 2020 6,284 3 View

How could you explain that weather is a factor with such contribution in keeping the same level of GHG emissions?

" The IEA report looks at changes in greenhouse gas emissions between 2018 and 2019. It finds that energy-using activities increased in 2019, but the emissions did not increase because of a...

03 December 2020 7,073 3 View

What are active areas of research in the conjunction of Reinforcement Learning and Finance?

I'm working on a proposal for my bachelor thesis and I am looking for areas to work on in the conjunction between Reinforcement Learning and Finance(I have some application domain knowledge in...

16 November 2020 8,438 4 View