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

02 February 2021 9,574 5 View

How to compute pressure drop on liquid ammonia line?

I have to analyze an existing ammonia line to estimate the pressure drop in it. The line is designed to transport liquid ammonia. I can compute the pressure drop with standard friction factor...

21 November 2020 5,494 3 View

Problem executing MrBayes. Help?

Hi, I'm trying to run MrBayes 3.2.7 with a matrix of 37 species and 20561 nucleotides. I consistently receive the following error: MrBayes > Execute...

18 November 2020 3,867 3 View

How can you order the clasification in CORINE legends, from a year to another, in type of vegetation?

For example, CORINE clasificate a zone of pasture one year, but in the next temporal clasification give crop of dry cereals, and preview clasification don't find. How can I order then?

20 October 2020 3,913 1 View

Should we include 2 clinically correlated variables (Correlation constant = 0.8) in the same Multi-linear regression model?

I am currently studying the effect of atrophy of a muscle on the clinical outcome of joint injury. There is actually another muscle that was previously well established to have an effect on...

06 September 2020 9,986 7 View

Does the molecular weight of PVP matter in CTAB buffer for DNA and RNA extraction?

I am preparing CTAB buffer and I read that addition of PVP (Polyvinylpyrrolidone) helps to remove phenolic compounds. Most of the times in protocols there is no additional information about...

05 September 2020 7,488 4 View

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Online data repositories are useful tools that ensure the reproducibility and repeatability of scientific investigations. For the sake of facilitating collaboration between researchers in the...

31 August 2020 4,826 3 View

best practices to check linear regression assumptions?

Hi everyone! I'm conducting a linear regression and I need to check the model assumptions. I wanted to ask what are the current best practices, and of you could provide a referente. Furthermore: I...

25 April 2020 7,888 17 View

Can the origin of the cognitive constructs that characterize us be produced by the coevolution of innate human cognitive capacities?

We know that the cognitive capacities that most characterize us are theoretically constructs, that is, non-observational concepts that do not have a concrete existence similar to the physical...

19 March 2020 2,427 3 View

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In general, football is a sport deportation that moves to a large market and related businesses, as well as dealing with public limited companies in football teams also with commercial societies...

23 January 2020 2,340 1 View

How many ways do bacteria have to communicate?

Hello, I am researching into how bacteria communicate. What I've found is that they use quorum-sensing*, and electrical signals**. I've also come across the ability to "speak and listen"***, but I...

03 September 2020 9,168 8 View

Self polymerization of Sesquiterpene Lactones after storage?

I have dehydroleucodine (DHL) and parthenolide (PTL) in powder form. This powder was left at -4C for a year. When the powder is redissolved in ethyl acetate or methylene chloride it rapidly forms...

02 August 2020 3,173 4 View

What is the mechanism of nanomaterials to reduce or detoxification mycotoxins ?

I want to get a clear explanation that it is not adsorption or opening of the lactone ring, for example, nano-magnesium oxide, how it works when it binds or interacts with aflatoxin, what is the...

27 April 2020 2,972 4 View

About Boehm titration, could you please guide me?

10 November 2019 4,889 4 View

Shall we add glucose too for making M9 minimal media if we want to add homoserine lactones as a sole carbon source in it?

I am working on isolation of quorum quenching bacteria from environmental samples using M9 minimal media containing C6-HSLs as a sole source of carbon. As glucose is a part of normal composition...

17 October 2019 2,892 2 View

Can we add glucose for making M9 minimal media containing C6-HSLs as a sole source of carbon?

I am workimg on isolation of quorum quenching bacteria from soil. I want to use M9 minimal media containing homoserine lactones as a sole source of carbon. Therefore, can we add glucose too into...

14 October 2019 4,718 2 View

Shall we add glucose too for making M9 minimal media if we want to add homoserine lactones as a sole carbon source in it?

I am working on isolation of quorum quenching bacteria from environmental samples using M9 minimal media containing C6-HSLs as a sole source of carbon. As glucose is a part of normal composition...

09 October 2019 5,137 2 View

Can we add glucose for making M9 minimal media containing C6-HSLs as a sole source of carbon?

I am workimg on isolation of quorum quenching bacteria from soil. I want to use M9 minimal media containing homoserine lactones as a sole source of carbon. Therefore, can we add glucose too into...

09 October 2019 5,660 2 View

Can N-Acyl-L-homoserine lactones (AHLs) be stored in acidified ethyl acetate at -20 centigrade?

Ethyl acetate is a commonly used solvent for extraction of AHLs. However when it comes to storing them, it is generally stored in acetonitrile after evaporating the solvent. Is it alright if the...

03 May 2019 2,929 1 View

What is the best way to add TMSCl for the silylation protection of CARBOHYDRATES?

01 February 2019 1,977 2 View