"Bald Eagle" <cre### [at] netscapenet> wrote:
> "Samuel B." <stb### [at] hotmailcom> wrote:
>
> > (...) my inability to parse mathematical formulas due to only being self-taught
(...)
>
> I'm mostly self-taught as well.  Let me know what you need to know, and I'm
> always happy to try to explain.

I might just take you up on that. I know the rules of PEMDAS, and I know
functions and their usages in programming languages, but when I see formulas on
Wikipedia or elsewhere I see many symbols representing unfamiliar equations. I
know it's only a matter of searching and finding, but I'm certain these things
are more easily grokked by the formally-trained.

> > I'm intrigued by that. What sorts of special properties does Nickle(II) oxide
> > possess, I wonder?
>
> "Exploring the interplay between electronic doping, magnetism, and Ni diffusion
> in NiO from first principles."
>
> NiO and NiO solid solutions are typically the first passivating oxides to form
> during the corrosion of Ni-rich alloys. Ni diffusion from the alloy interface,
> through the oxide, to the exposed surface is the rate-limiting kinetic process
> for continued oxidation. From first principles, we calculate the effects of
> magnetic order and electronic doping on the minimum energy diffusion pathways.
> We elucidate the origin of the diffusion barrier dependencies by assessing
> changes in the defect states and chemical bonding along the diffusion paths. Our
> work highlights the complexity of diffusion in even structural simply but
> strongly correlated oxides with practical recommendations for corrosion
> resistance that may be transferable to diffusion-mediated redox processes in
> energy storage materials.

Not sure what this means, but am I jumping to conclusions by thinking this means
NiO-rich alloys corrode more easily from the 'sides'? Similar to how a
stratified bedrock can be more easily penetrated by weathering forces attacking
between its layers?

> > FFT=fast Fourier transform? What have you been using it for? (Sorry for being
> > out of the loop, haha.)
>
>
http://news.povray.org/povray.binaries.images/thread/%3C58bfe702%241%40news.povray.org%3E/
>
http://news.povray.org/povray.binaries.images/thread/%3Cweb.58bd5ea376ca50b7c437ac910%40news.povray.org%3E/?ttop=4357
11
> &toff=550
>
> I haven't had much of a chance to really use it for anything.
> It was suggested that I might be able to use it for my gear tooth counting
> project:
>
> http://news.povray.org/povray.general/thread/%3C59371017%241%40news.povray.org%3E/
>
http://news.povray.org/povray.binaries.images/thread/%3C593bd19f%40news.povray.org%3E/

Very interesting!

After reading that I was trying to figure out a better way to count gear teeth,
but was drawing a blank. Somebody in one of those threads mentioned (to heavily
paraphrase) performing a polar-to-cartesian transformation on an image of a gear
and evaluating that (probably by tracing rays horizontally and incrementing a
counter). I wonder how that would work out?

And I think you mentioned possibly using an FFT to approximate 3D geometry using
isosurfaces. I do believe there is some potential there.

> > And I'd hate to bother him to pick his brain, but I do know some people like to
> > talk. Heck, maybe the creator of KrystalShaper would be willing to share the
> > code he used to convert HKL indices to planes.
>
> They are supported by millions of our tax dollars.  If he wants to answer your
> email, he will.  If he doesn't, then you made a reasonable request, and you can
> try elsewhere.  And really, he seemed very cool and happy to talk about his
> research, and explain some of the basics that I was ignorant of.  Politely
> asking for some expert assistance with one thing isn't really "bothering."

I heard that many researchers are willing to share their research. In fact, it's
been said if you can't find a paper for free on sci-hub, then maybe you should
contact the author(s) directly. I love the fact that people are willing to share
their findings, regardless of profit.

Sam

Post a reply to this message

"Samuel B." <stb### [at] hotmailcom> wrote:

> I might just take you up on that. I know the rules of PEMDAS, and I know
> functions and their usages in programming languages, but when I see formulas on
> Wikipedia or elsewhere I see many symbols representing unfamiliar equations. I
> know it's only a matter of searching and finding, but I'm certain these things
> are more easily grokked by the formally-trained.

Correct on both counts, but I've already done a lot of that searching and
finding, and I've managed to grok a fair amount.  Might as well pull you along
the learning curve with me.  :D


>
> Not sure what this means, but am I jumping to conclusions by thinking this means
> NiO-rich alloys corrode more easily from the 'sides'?

Nope.   If you read it again, it means that an oxide skin/film/crust forms, and
then metallic nickel has to diffuse through that to get oxidized on the surface
of that crust.



If it's published, it's already been paid for.  I had to do some backflips to
find copies of MY OWN research that got published through ACS.  What a scam to
the taxpayer.

Post a reply to this message

"Bald Eagle" <cre### [at] netscapenet> wrote:
> If it's published, it's already been paid for.  I had to do some backflips to
> find copies of MY OWN research that got published through ACS.  What a scam to
> the taxpayer.

That's messed up! Didn't you have a preprint version on hand? Or were you trying
to obtain a peer-reviewed version?

Sam

Post a reply to this message

"Samuel B." <stb### [at] hotmailcom> wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
> > If it's published, it's already been paid for.  I had to do some backflips to
> > find copies of MY OWN research that got published through ACS.  What a scam to
> > the taxpayer.
>
> That's messed up! Didn't you have a preprint version on hand? Or were you trying
> to obtain a peer-reviewed version?
>
> Sam

Well, y'know - it's a long story.

But I lost the digital copies I had, and hard copies of nearly everything were
gone too.

But thanks to the interwebs, I got around any of the stupid paywall sites and
got the paper (somewhere) and the supporting information.
https://pubs.acs.org/doi/10.1021/jo0207022

I even found out that it got referenced in Greene & Wuts.  :)

https://www.wiley.com/en-us/Greene%27s+Protective+Groups+in+Organic+Synthesis%2C+5th+Edition-p-9781118057483

Post a reply to this message

Thomas de Groot <tho### [at] degrootorg> wrote:
> The final version of the Granite_21 macro package can be found in
> p.b.scene-files under the same header.
>
> The image here illustrates, from the start, the principal rule of the
> macro, written on the wall!
>
> Enjoy!
>
> --
> Thomas

Make it part of a DLC

Post a reply to this message

Op 29/12/2021 om 12:03 schreef Saul F. Luizaga:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> The final version of the Granite_21 macro package can be found in
>> p.b.scene-files under the same header.
>>
>> The image here illustrates, from the start, the principal rule of the
>> macro, written on the wall!
>>
>> Enjoy!
>>
>> --
>> Thomas
> 
> Make it part of a DLC
> 

I have no idea about what this entails, frankly.  :-)


-- 
Thomas

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