Kengo Shibuya

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Questions related from Kengo Shibuya

Scherrer equation, grain size, and silica aerogel?

Does anyone have experience estimating the grain size of silica aerogel using the Scherrer equation and XRD? I will evaluate the grain size of the sample silica aerogel using Wakosil C-300 [1] as...

07 September 2021 9,116 5 View

Are monolithic silica aerogel products available?

I appreciate your attention. I am looking to sell monoliths (transparent) of silica aerogel for physical experiments (not industrial quantities). The size of the monolith is at least 40mm x 40mm...

15 July 2021 294 2 View

Is an infrared observation satellite for tritiated water (HTO) possible?

In Fukushima, a large amount of tritiated water (HTO), which was generated after the nuclear accident caused by the 2011 earthquake, has been stored, and the government is recently considering...

15 April 2021 872 3 View

How to change an internal parameter during MATLAB fminseach?

An optimization is performed using the MATLAB fminseach function. This optimization has a parameter that adjusts the precision, and the larger the value, the wider the search range of solution...

13 January 2021 4,078 1 View

Is any physical amount of beta-amyloid accumulation (for AD) known?

In Alzheimer's disease, beta-amyloid accumulates in senile plaques. I am a physicist who wants to develop a new method for measuring the beta-amyloid in vivo, but I don't know the amount of...

28 October 2020 6,807 1 View

In positron chemistry, does pH change positronium lifetime in aqueous solution?

A question is about positron chemistry. Does the pH of an aqueous solution affect the lifetime of positronium (Ps)? The following references reported that the interactions between Ps and MnO4- was...

01 January 1970 10,173 3 View