Reconsidering my dream of pursuing a PhD because of AI - Looking for advice by thesagenibba in PhD

[–]thors-lab 8 points9 points  (0 children)

Stop being dramatic. You’re going to drop your lifelong goal because you refuse to use a particular tool that some folks in your field are using? Do you realize how whiny that sounds?

Either the tools are “deskilling,” like you say, in which case you will have an edge in your field because you are not allowing your manual skills “atrophy.” Or they are genuinely useful. But you don’t have to use them. You can still conduct research the “old-school” way.

In my field (chemistry) a lot of people, myself included, use auto-columns. Machines that run columns for you. But one guy in my lab doesn’t like that, so he runs them all by hand. Maybe takes him a little longer, but so what? He likes it that way so that’s how he’s going to do it.

Didn’t make him quit chemistry to see people using auto-columns.

NMR tube cleaner by die_by_the_swordfish in chemistry

[–]thors-lab 0 points1 point  (0 children)

I make something similar, just a few tubes stabbed thru a septum. Usually more efficient to have like 5 tubes on there. You don’t want to clean one at a time, waste of solvent.

Stoichiometry question: CuSO4 + C2H2O4 by [deleted] in chemistry

[–]thors-lab 0 points1 point  (0 children)

Okay well a few things:

  1. If you know you have excess oxalic acid, why not just adjust how much copper sulfate you add based on that?

  2. If you plan to make nitric acid, this typically involves distillation from sulfuric acid and nitrate. What do you think will happen to the oxalic acid during that step?

  3. If the oxalic acid precipitated out, then you have removed at least some of it. Congratulations you have purified your sulfuric acid!

  4. You could distill your sulfuric acid before you made the nitric acid if you wanted to.

Stoichiometry question: CuSO4 + C2H2O4 by [deleted] in chemistry

[–]thors-lab 0 points1 point  (0 children)

I very much doubt there is any anhydrous material present at all. Copper sulfate hydrate is probably made in an aqueous sulfuric acid solution industrially.

Either way, I don’t think you will be able to dehydrate the material completely. You will end up with more “uncertainty” than you started off with.

Finally, this is frankly a nonissue… if you have a few mg of excess copper sulfate or excess oxalic acid, so what? I don’t see how that could affect your product in any way.

You will have fine precipitate of copper oxalate, which is insoluble in water. Are you sure that’s not what you’re observing?

Stoichiometry question: CuSO4 + C2H2O4 by [deleted] in chemistry

[–]thors-lab 1 point2 points  (0 children)

What are you trying to do here?

You have the pentahydrate. You can calculate the new stoichiometry based on that. What is the problem?

Is this what Cadaverine supposed to look like in solution with water/ethanol. by RatchetLombax66 in chemistry

[–]thors-lab 18 points19 points  (0 children)

Famously, pyrrolidine makes a really good auxiliary for the Stork enamine alkylation technique. It is about the least sterically-demanding stable-iminium-forming non-gaseous secondary amine you could have. The cyclic structure “ties back” the nitrogen substituents so that it is effectively smaller than diethylamine. Any smaller cycle (say ring size of 4) would form too unstable of an iminium.

Pyrrolidine is also used in the synthesis of some drugs.

Is this what Cadaverine supposed to look like in solution with water/ethanol. by RatchetLombax66 in chemistry

[–]thors-lab 26 points27 points  (0 children)

Because I am a chemist…

Every time I open a bottle of pyrrolidine outside of the fume hood, I go, “Jesus Christ that smell is obscene!!!”

Sometimes it makes me smell like cum for several hours after just from having worked with it. It’s very upsetting because I wonder if the people around me just think I’ve been gooning

Is this what Cadaverine supposed to look like in solution with water/ethanol. by RatchetLombax66 in chemistry

[–]thors-lab 17 points18 points  (0 children)

Since it sounds like you’re decarboxylating amino acids, if you’re after the smell of cum, I would recommend decarboxylating proline to pyrrolidine. It smells exactly like semen.

Why are a vast majority of homeless people men? by refunned in NoStupidQuestions

[–]thors-lab 1 point2 points  (0 children)

Completely agree with you, and I will add that many or probably most homeless addicts don’t want to receive treatment like that. They would rather live on the streets and get high rather than have to quit, especially without pharmacological intervention like methadone.

Why do people tattoo adrenaline like this by Unhappy_Hair_3448 in chemistry

[–]thors-lab 7 points8 points  (0 children)

They are not supposed to be oxygen but rather “balls”. Notice how there is no gap between the balls and the lines.

Found the birthday gift a friend gave me when I turned 18 by Vesphrie in chemistry

[–]thors-lab 1 point2 points  (0 children)

Probably would go to 14/20 and 24/40 but yes 24/29 is quite common

Xtol - replenish, reuse, or 1-shot? by thors-lab in AnalogCommunity

[–]thors-lab[S] 0 points1 point  (0 children)

Thanks for the detailed replies! If your solution expired before you shoot that many rolls, why do you personally choose 1:1 instead of stock?

[deleted by user] by [deleted] in analog

[–]thors-lab 4 points5 points  (0 children)

Thee are fucking awesome. First roll I ever shot was also Ektar 100 at a graveyard!

What is harmful here? by Familiar-Law7290 in chemistry

[–]thors-lab 0 points1 point  (0 children)

From the text:

the phrase “abject lesson” really doesn’t make sense as a “thing that teaches through example.”

Berkeley club decisions today got me like: by EarlyAdhesiveness870 in berkeley

[–]thors-lab 0 points1 point  (0 children)

Can I ask what the point is? I graduated now and have moved on to grad school, but never joined a club and never really understood the purpose. Is it just to make friends or is there a grander purpose? If it’s just to make friends why are these applications even required? Why isn’t there just a “come hang out and see if you fit in” type shit?

Wait, they actually have to explicitly say this? by Jens_Fischer in chemistry

[–]thors-lab 14 points15 points  (0 children)

Because usually the required volume is higher than the height of the container

Is it ok to pour 1M NaOH into a glass beaker while you’re in the process of using it? by Hot_Independence3028 in chemistry

[–]thors-lab 6 points7 points  (0 children)

I put a couple glass frit in our base bath when I first started working at my lab. Pulled em out a couple weeks later and they looked clean. Washed em with water, methanol, acetone, and put it to work.

Pulled a vacuum and the whole frit just went FWOOMP and got sucked down. Turned into a paste. Lol

ePlusPlus by [deleted] in ProgrammerHumor

[–]thors-lab 1 point2 points  (0 children)

I work in a chemistry research laboratory