Is there a simple method to create very narrow but very bright light beam?

One of my microscopy application I would need a very narrow (0.5mm - 0.1mm) light beam (not laser!) to illuminate biological specimen. (cells) Is there any method to create such light beam? As an...

05 January 2021 5,352 4 View

Is it possible, that nitrogen purging gas reacts with solute Sr during the rotary degassing treatment of liquid aluminum alloys?

During our experiments, we conducted multiple rotary degassing treatments with Ar and N2 purging gases on a 356 alloy with 200 ppm Sr. We found that the fading process of the added modifier is...

25 September 2020 5,341 3 View

How to calculate the planar disregistries between y-AI2O3 and Al3Ti?

I would like to calculate the planar disregistries between y-AI2O3 and Al3Ti with the aid of the disregistry model of two-dimensional lattices proposed by Bramfitt, to evaluate the nucleation...

06 December 2019 3,592 4 View

Protocol for stable BaTiO3 nanoparticle suspension preparation?

I have BaTiO3 nanoparticle (particle size

19 November 2018 3,324 1 View

Could someone suggest a recent textbook on zootaxonomy & animal evolution & phylogeny for teaching purposes which covers ca. the whole Animal kingdom?

I'd prefer a book using results based on both molecular and classical methods. If there's no such book covering the whole animal phylogeny, then I'd also welcome a book on "Chordata" or "Vertebrata".

25 January 2015 1,309 8 View

Which free software for DNS64 implementations exists?

Due to the depletion of the global IPv4 address pool, some new Internet clients will not be able to get IPv4 adresses, but only IPv6 addresses. However the majority of the internet still uses IPv4...

19 December 2013 4,070 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

OpenBCI eeg--has anyone used them?

I'm looking to try out an off-the-shelf EEG set for some exploratory work. Curious if anyone has used the OpenBCI, and how much set-up work is required. I've heard they are more difficult to get...

01 March 2021 4,128 3 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

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 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

Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View