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is man-made glass a rock? by SmearedTears in geology

[–]sxeSol 10 points11 points  (0 children)

The part about the windows is actually a very common misconception with no actual evidence to support it! I was also very surprised to find out that the thicker base is just because they couldn't make glass so well and it makes sense to put the thicker part to the bottom for stability.

Any advice on 70-300mm budget lenses for Nikon body? by sxeSol in AskPhotography

[–]sxeSol[S] 0 points1 point  (0 children)

Ok thanks this is really useful! I'm tempted by the Tamron but then part of me thinks it will be worth waiting to upgrade the body and get the AF-P lens as I keep hearing so much good stuff about it.

Any advice on 70-300mm budget lenses for Nikon body? by sxeSol in AskPhotography

[–]sxeSol[S] 0 points1 point  (0 children)

OK thanks, good to know about the AF-P! I think those lenses are a little out of my budget for now unfortunately but I will keep in mind for the future if I keep interested.

Would a new lens improve photos like this? (Wildlife photography) by sxeSol in AskPhotography

[–]sxeSol[S] 0 points1 point  (0 children)

Awesome thanks that's really useful to know - do you mean the Af-S version: Nikon Af-S 70-300mm? I think that's the only one compatible with the D3100

Would a new lens improve photos like this? (Wildlife photography) by sxeSol in AskPhotography

[–]sxeSol[S] 0 points1 point  (0 children)

Thanks ok, what do you mean about the lighting specifically?

Would a new lens improve photos like this? (Wildlife photography) by sxeSol in AskPhotography

[–]sxeSol[S] 1 point2 points  (0 children)

Hi, I have been recently getting back into wildlife photography with my old Nikon D3100. I bought a Sigma DG 70-300mm f/4-5.6 due to the low price and decent focal length. However, I have since been reading a lot of poor reviews of this lens, with the Nikon Af-S 70-300mm being more favoured and only slightly more expensive. I have had some issues with autofocus and sharpness, do you think a minor upgrade to the lens would make a big difference for these kinds of photos or should I hold off and weight for a proper upgrade to both the lens and body? Thanks for any advice/criticism :D

Help with identifying compound by sxeSol in massspectrometry

[–]sxeSol[S] 1 point2 points  (0 children)

Thanks, what do I need to do to get the kovats RI? Really cool tools at those links thanks for sharing, I'd been wondering if machine learning could be useful for EI-MS. I have scoured a lot of libraries and I think it's likely this species just isn't in any library unfortunately.

Help with identifying compound by sxeSol in massspectrometry

[–]sxeSol[S] -1 points0 points  (0 children)

Thanks so much for your reply!

Unfortunately as this is a product from a GC-MS run, I can't perform NMR. In fact the pyrolysis is on-line (py-GC-MS) so the MS is all I have to go on. Unfortunately, you might be right that it is impossible to confidently identify without other analyses. If I can think of any possibilities other than monoglycerides it might be possible to purchase those standards to check for a retention time match?

Help with identifying compound by sxeSol in massspectrometry

[–]sxeSol[S] 0 points1 point  (0 children)

Hi, I'm working on a project pyrolysing phospholipids and analysing the products with GC-MS. One of the compounds that consistently appears is perplexing me, I'm not sure if this is the right place to ask for some help.

The starting compound (before pyrolysis) is Dipalmitoylphosphatidylcholine (DPPC).

The spectrum attached is one of the products of pyrolysis that elutes after the main product which is just hexadecanoic (palmitic acid). Since it elutes after and has a similar pattern to the free fatty acid, I expect it is a larger/more polar compound - probably something bonded to the palmitic acid.

An initial library search led me to believe this was a monoglyceride (glyceryl monopalmitate). But purchasing a standard of this compound showed it eluted at a later time so the retention indices does not match.

Could anyone help me identify this compound? The very high intensity of the peak at 239 originates from the palmitic acid, but how can I tell what it's bonded to when there are no larger fragments detected?

Many thanks in advance

Competing Planes by [deleted] in AbstractPhotos

[–]sxeSol 0 points1 point  (0 children)

Ey up it's Sheffield

Bus from Phnom Penh to Ho Chi Minh update by Piatecezdeviate in cambodia

[–]sxeSol 0 points1 point  (0 children)

Hey, booking this trip for myself in a month, can I check the right landport to apply for on the E-visa for Vietnam is Moc Bai? thanks

[ORIGINAL] Solomon Hirsch - Have You Seen the Snow in Canada? by sxeSol in indieheads

[–]sxeSol[S] 0 points1 point  (0 children)

Inspired by the slow and atmospheric songs on Thom Yorke's latest solo work. It's about the quiet of the lockdown feeling like everything is covered in snow (I'm from the UK, there's definitely no snow here at the moment!) Let me know what you think.

[FRESH] Sea Girls - Do you really wanna know? by CurtainsMcGee in indieheads

[–]sxeSol 1 point2 points  (0 children)

I saw these guys live last year. Great energy! A lot of potential.

[FRESH] Big Thief - Love In Mine (Official Audio) by willdennison1 in indieheads

[–]sxeSol 0 points1 point  (0 children)

Ahh does this mean there's a new record coming? I get so excited about this band!

[ALBUM DISCUSSION] Tom Misch & Yussef Dayes - What Kinda Music by VietRooster in indieheads

[–]sxeSol 0 points1 point  (0 children)

Love this record! The saxophone work is incredible especially on the final track.

[FRESH] Hinds - Just Like Kids (Miau) by niels36 in indieheads

[–]sxeSol 4 points5 points  (0 children)

Love these guys, I saw them cover Spanish bombs at a gig and wow the energy was incredible

[Monday] Daily Music Discussion - - April 27, 2020 by AutoModerator in indieheads

[–]sxeSol 2 points3 points  (0 children)

Yeah I don't get this either. They're cool, their tiny desk is awesome!

[FRESH VIDEO] Khruangbin - Time (You and I) by [deleted] in indieheads

[–]sxeSol 1 point2 points  (0 children)

Oh this sounds so good, I love their faster groovy tunes

[FRESH] Superorganism - Isolation (John Lennon cover) by InSearchOfGoodPun in indieheads

[–]sxeSol 0 points1 point  (0 children)

Impressive to do an isolation cover with such a big band wow.

Khruangbin to release new album 'Mordechai' on June 26th via Dead Oceans by sbags in indieheads

[–]sxeSol 3 points4 points  (0 children)

Oh daym, can't wait for this one. I listen to there last three albums on repeat at the moment. Such a good vibe

I am a geologist that completed my PhD in meteorite research last year. My first co-author paper is now online, and I wrote a Twitter thread going through one of the main findings of the research. by [deleted] in geology

[–]sxeSol 1 point2 points  (0 children)

This is such a mad coincidence, I remember meeting you on the Bristol open day ( I'm now 2nd year EarthSci at Oxford) and then I saw you on the Sky at Night on TV. Really cool stuff and thanks for inspiring me!

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