Walls: Reboot 2 - The Descent
The problems range from unexpected isotopes in building materials, to copper-eating fungi, and wildlife that's described as endearingly intelligent, but quite overwhelming.'
Two Birds
"but the isotopic analysis does tell us that these predate the ones we saw earlier by at least a few centuries. that means the cave was_inhabited_ for at least a few centuries! that's exciting!
Rogue Sword - Ch 8: Mist is Found on All Mountains
We have our own uranium, a by-product of the gold and diamond mining process really, but the method we were using to enrich it was called molecular laser isotope separation and it was very expensive.
Marla Chapter 15 - Breeding
It is identical in isotopic composition to the slug the policefurs pulled out of the pavement." marla touched the depleted uranium slug. it was the twin to the one that had taken her lover's life. "what does it mean, zubin?"
Dust and Echoes - Part VII
The radiation knocks some free before forming to oxygen though, and you get isotopes of hydrogen." she pointed to one of the fuel tanks that contained liquid deuterium, noting the slow rise and fall in stored levels.
OmniGro
During the week eli worked feverishly running simulations, testing isotopes, comparing genetic data. he approached the problem from every possible angle, but he still made little progress.
Walls: Reboot 8 - The Ever Gray
But this is no plain metal... it's a mountain made of durasteel, plasteel, and a bunch of lesser-known alloys along with a bunch of radioactive isotopes." it made me blink to myself as i met his gaze, "durasteel... and plasteel."
"Daggers of Darkness, Book 4: An Unexpected Discovery", Chapter-5
If they had been using rocks from an asteroid belt or a kuiper belt, there would still be some isotopes registering that one would expect, even after all this time. uh, this ain't anything even remotely like that. what do you think, nial?"
Walls: Exodus 4 - Shield of Sophos
'the current fuel reserves will last you a few decades, and you'll be able to refuel by eating the needed isotopes,'etemenanki answered. "how... comforting," i thought. 'feel your wrists,' etemenanki ordered.
Building to the Climax (Book6, Chap19)
"i once injected karla with a radio isotope then faked my death for a while by blowing up my field office in j-berg, africa. then i tracked karla to find you and your sister. you two aren't easy to catch. but times are different now.
Improbable Things Happening to a Coyote (End)
Here's some isotope plots... normally, based on the decay chain, you'd see 'em graphed like _this_... but these numbers are all fucked up. her throttle isn't locked." _we're partway into the salvage mission. so we found the_ manin_, at least_.
Manin
isotope and crystal analysis would have to confirm it came from this ship, i'm guessing." "that makes sense. we'll have to find an accessible power conduit. there's a lot of data here for my scanners to try and sift through, though." "what about here?"