Sandra
@sjkoe.bsky.social
Life sciences PhD, wife, mom (she/her). Science, medicine, nature, humor, and animals using #mobilephotography
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Sandra
@sjkoe.bsky.social
· May 14
Speaking of impressive libraries, have you ever been to the Boston Public Library? Amazing place
Reposted by Sandra
Universal Healthcare is such a complex beast that only 32 of the world's 33 developed nations have managed to make it work.
December 18, 2025 at 2:21 PM
Universal Healthcare is such a complex beast that only 32 of the world's 33 developed nations have managed to make it work.
Some of the best discoveries are fortuitous. Chemists modified an antibiotic (vancomycin) targeting gram-positive bacteria to make it more effective against resistant strains. In doing so they unexpectedly made a form of vancomycin that also kills gram-negative bacteria
#science #medicine #chemistry
#science #medicine #chemistry
Chemists have found that attaching a small quinoline group to vancomycin lets it slip inside the bacteria and reach its target. cen.acs.org/pharmaceutic... #chemsky 🧪
Quinoline tag helps vancomycin breach gram-negative defenses
The work reveals how tiny structural shifts can deliver outsize biological effects
cen.acs.org
December 9, 2025 at 9:39 PM
Some of the best discoveries are fortuitous. Chemists modified an antibiotic (vancomycin) targeting gram-positive bacteria to make it more effective against resistant strains. In doing so they unexpectedly made a form of vancomycin that also kills gram-negative bacteria
#science #medicine #chemistry
#science #medicine #chemistry
Reposted by Sandra
Some quick Powerful Owl sketch experiments. Every drawing is practice for the next.
December 9, 2025 at 12:11 AM
Some quick Powerful Owl sketch experiments. Every drawing is practice for the next.
Dr Hoffman was a nuclear chemist who was often the only woman in her chemistry courses. She earned her doctorate in 1951.
#womeninscience #womeninstem #science #chemistry
#womeninscience #womeninstem #science #chemistry
Obituary: Darleane C. Hoffman (1926-2025) chemist who expanded the periodic table
go.nature.com/3KDUzXS
go.nature.com/3KDUzXS
Darleane C. Hoffman obituary: chemist who expanded the periodic table
Her experiments on the heaviest elements deepened our understanding of radioactivity.
go.nature.com
December 3, 2025 at 5:32 PM
Dr Hoffman was a nuclear chemist who was often the only woman in her chemistry courses. She earned her doctorate in 1951.
#womeninscience #womeninstem #science #chemistry
#womeninscience #womeninstem #science #chemistry
Happy Thanksgiving, Bluesky!
November 27, 2025 at 8:18 PM
Happy Thanksgiving, Bluesky!
Reposted by Sandra
One lesson of the Sandwich Guy Case is now more than ever when you are called to jury duty you should go
November 7, 2025 at 12:49 AM
One lesson of the Sandwich Guy Case is now more than ever when you are called to jury duty you should go
Reposted by Sandra
here take the idol you must not let it fall into their hands
October 24, 2025 at 1:48 PM
here take the idol you must not let it fall into their hands
October 20, 2025 at 8:59 PM
Beautiful day for a hike along the Appalachian Trail in VA. The views looking west were beautiful, but the nearby trees stole the show.
#mobilephotography #nature #trees
#mobilephotography #nature #trees
October 19, 2025 at 8:40 PM
Beautiful day for a hike along the Appalachian Trail in VA. The views looking west were beautiful, but the nearby trees stole the show.
#mobilephotography #nature #trees
#mobilephotography #nature #trees
October 13, 2025 at 9:06 PM
Reposted by Sandra
Fluffy lil potato 🥔
(Northern Saw-whet Owl)
(Northern Saw-whet Owl)
October 8, 2025 at 12:05 AM
Fluffy lil potato 🥔
(Northern Saw-whet Owl)
(Northern Saw-whet Owl)
August 30, 2025 at 2:00 PM
Reposted by Sandra
Here is a short Q&A thread on #COVID and #Flu vaccines for the upcoming respiratory virus season. I try to cover frequently asked questions. The good news is both vaccines will be available this fall though we need clarification on access to COVID vaccines for healthy folks <65.
A 🧵
A 🧵
August 23, 2025 at 12:45 PM
Jellyfish at the Seattle Aquarium. So peaceful to watch, when there’s no chance of getting stung lol
August 17, 2025 at 5:12 PM
Jellyfish at the Seattle Aquarium. So peaceful to watch, when there’s no chance of getting stung lol
Went for a hike this afternoon to see the Potomac River, and it did not disappoint. A mushroom I spotted along the way was doing its best impression of a carnation.
#mushrooms #hiking #river #wildlife
#mushrooms #hiking #river #wildlife
July 20, 2025 at 8:56 PM
Went for a hike this afternoon to see the Potomac River, and it did not disappoint. A mushroom I spotted along the way was doing its best impression of a carnation.
#mushrooms #hiking #river #wildlife
#mushrooms #hiking #river #wildlife
Reposted by Sandra
Happy birthday to #astrophysicist Jocelyn Bell Burnell! 🧪🐡👩🏼🔬🎢🔭#histsci In 1967, as a grad student she discovered the 1st radio pulsar, a highly magnetized, rotating neutron star that emits a beam of EM radiation. This radiation can only be observed when the star is pointed towards us; so, like the
July 15, 2025 at 11:44 AM
Happy birthday to #astrophysicist Jocelyn Bell Burnell! 🧪🐡👩🏼🔬🎢🔭#histsci In 1967, as a grad student she discovered the 1st radio pulsar, a highly magnetized, rotating neutron star that emits a beam of EM radiation. This radiation can only be observed when the star is pointed towards us; so, like the
Wow… what I wouldn’t give to have a car free lifestyle 😭
You ever look at the rail system this country used to have?
June 3, 2025 at 3:21 AM
Wow… what I wouldn’t give to have a car free lifestyle 😭
Reposted by Sandra
🗣️ FOLKS! We’ve got a Zipper Bird on our hands here. This guy tends to be a tree-topper, and makes really cool hanging moss nests. A quintessential Adirondack bird! Do you recognize this song? #AwesomeBirds
June 1, 2025 at 12:48 PM
🗣️ FOLKS! We’ve got a Zipper Bird on our hands here. This guy tends to be a tree-topper, and makes really cool hanging moss nests. A quintessential Adirondack bird! Do you recognize this song? #AwesomeBirds
Reposted by Sandra
I'm repeating this as dogwoods are more broadly in flower. On the left with white bracts (not petals) is a flowering dogwood inflorescence, containing many flowers. The closeup shows the individual flowers. We can learn a lot just by looking at nature carefully.
May 6, 2025 at 2:41 PM
I'm repeating this as dogwoods are more broadly in flower. On the left with white bracts (not petals) is a flowering dogwood inflorescence, containing many flowers. The closeup shows the individual flowers. We can learn a lot just by looking at nature carefully.
April 15, 2025 at 1:11 AM
April 12, 2025 at 3:09 PM
Reposted by Sandra
Not to pile on, but every 'c' in 'Pacific Ocean' is pronounced differently.
March 25, 2025 at 7:53 PM
Not to pile on, but every 'c' in 'Pacific Ocean' is pronounced differently.