Estimate Beta is .00, yet it's significant?

Hi everyone, I've run an analysis of a latent 3-way interaction in Mplus (Y on XWZ). The estimate for this path is 0.000. S.E. is 0.000. Est./S.E. is 2.034. Two tailed p-value is 0.042. So,...

08 December 2020 2,132 4 View

What is the double layer capacitance of a 1 sq-cm smooth gold electrode in 0.1N (0.05M) Sulfuric Acid?

Is there an empirical or theoretical standard value for this (at room temperature) and for different electrolyte concentrations? Is there a resource available that provides a chart of values for...

29 November 2020 6,937 2 View

How does the concentration of atmospheric oxygen near ground level vary with time?

Hello, I am interested in how the concentration of O2 varies over time close to ground level. I have been informed that the concentration can drop when an inversion layer is present in the local...

19 November 2020 2,328 3 View

How does one calculate the best volume of nickel gel to use in a protein purification?

We know the capacity of the gel and the total amount of protein in the bacterial lysate from a Bradford assay. What we do not know is what fraction of the total protein is the his-tagged protein...

15 November 2020 4,664 2 View

Final temperature of water leaving an ice bath through copper tubing?

I have water flowing at 4 GPM at 2.5 feet per second through 50ft of 0.375 in. outer diameter tubing with 0.014 in. wall thickness. The water flows through copper tubing into the 50ft coil...

01 November 2020 8,039 5 View

Is it acceptable to publish data that were digitized from a previously published plot/figure (referencing the original figure of course)?

There are many ways to extract original source data from figures and plots in publications. If one were to do that and reanalyze the data in the same or a different way, is that acceptable in a...

28 October 2020 3,822 2 View

Methods to attach glutathione agarose resin to glass slide?

Hello, I am looking to capture a GST tagged protein on a glass slide. I was wondering if anyone had any experiences with glutathoine agarose resin. I realize this is commonly used in affinity...

13 July 2020 1,773 3 View

Where to find predator:prey mass data (for terrestrial carnivores)?

I'm looking for datasets (or databases) in which the body mass of predator and prey are presented. I'm specifically interested in terrestrial predators (snakes, mammals, birds). An example of is...

16 June 2020 2,453 9 View

How to calculate the overlap between animal distributions (Shape or .shp file)?

I would like to calculate the overlap between the distributions of two sets of data (predator & prey). The prey set has got about 250 species, the predator set approximately 5000. For each...

21 May 2020 6,726 3 View

Who can assist with an ingredient design of a Covid 19 Sars-2 Cov protein subunit and adjuvant vaccine?

18 May 2020 1,675 13 View

How can I make stacked bar graph with scatter plot?

I want to make a stacked bar graph with showing each data value as dots. I tried with graph pad prism, version 6, but could not succeed. Does anyone have tried before making such graphs?

01 March 2021 9,383 1 View

Can anyone name this graph type?

I've attached a recreation of this graph type that I need to make for study reports. The clients have sent them to us in the past, but I am trying to make the reporting process more streamlined,...

15 February 2021 9,795 3 View

Possible problem for showing 0.2 sun intensity instead of 1 sun intensity in AAA class Newport solar simulator?

We have a AAA class Newport solar simulator. We changed the Xenon Arc Lamp recently (XBO450W, Make:OSRAM) as the lifetime got over. However, the intensity is coming to be only 0.2 sun instead of 1...

14 February 2021 9,998 3 View

Which is the best wavelength to study aerosol optical depth(AOD) related to climate reseach,which criteria must be adopted in choosing the wavelengh?

We are doing a study on impact of aerosol on precipitation. Which satellite data and which wavelength will be the best. or can some one suggest a criteria to be adopted to choose an instrument...

12 February 2021 6,324 3 View

Are there any differences between setting automatic or manual number of measurements in DLS?

When doing measurements in DLS (either size or zeta potential), I have the option to input an automatic number of measurements or to set it manually. My question is: is there a drawback in...

08 February 2021 9,423 6 View

Can anyone tell me how can I reduce the particle size of a polymer micelle ?

Currently, I am working on the PLA-PEG polymer micelle for the drug delivery system. The micelle I have synthesized I got avg 900nm particle size on DLS. I want to reduce the particle size below...

31 January 2021 2,684 5 View

What dilution do I use for my GNP solution UV-Vis and DLS characterization?

I have prepared gold nanoparticles using the citrate reduction method in the lab. I need to characterize them using UV-Vis and DLS, by how much should I dilute my sample for using it in the...

26 January 2021 530 5 View

How Nanotechnology helps to develop various products in Agrometeorology?

Nanotechnology (NT) is one of the advanced material science with which the development in materials and improvement in electronics. NT has made it possible to miniaturizing the things to fit in...

21 January 2021 2,305 6 View

Can you give me an example of a faulty or egregious environmental claim that is NOT related to climate change?

I am doing lesson plans and am looking for examples of environmental claims that do not stand up to close scrutiny. There are more than enough examples of this related to climate change...so no...

18 January 2021 4,661 7 View

What's the difference between light absorption and coupling in plasmonic metals?

What's the difference between light absorption and coupling in plasmonic metals? It seems that light absorbed in metal nanostructure/nanoparticles doesn't contribute to enhancement in electric...

14 January 2021 1,884 4 View