sandra
@sjkoe.bsky.social
PhD, wife, mom, owned by two cats. Science, medicine, nature, humor, and other nerdy things. No DMs, ever.
#birds #books #mobilephotography
#birds #books #mobilephotography
Pinned
sandra
@sjkoe.bsky.social
· May 14
Speaking of impressive libraries, have you ever been to the Boston Public Library? Amazing place
Reposted by sandra
Reposted by sandra
Reposted by sandra
In Minnesota, we are shining.
Today there was a sun halo with tiny diamonds of frozen water double refracting the light.
Today there was a sun halo with tiny diamonds of frozen water double refracting the light.
January 20, 2026 at 6:40 PM
In Minnesota, we are shining.
Today there was a sun halo with tiny diamonds of frozen water double refracting the light.
Today there was a sun halo with tiny diamonds of frozen water double refracting the light.
Reposted by sandra
I swear it’s a cat.
January 19, 2026 at 7:55 PM
I swear it’s a cat.
I had no idea that a movie that entered public domain would show up on Wikipedia in its entirety. Think I'm going dial up the way-back machine and watch it tonight.
en.wikipedia.org/wiki/File:Hi...
en.wikipedia.org/wiki/File:Hi...
en.wikipedia.org
January 20, 2026 at 1:16 AM
Reposted by sandra
A single crow flies in front of the 97.8% waxing gibbous moon tonight. 🪶
January 2, 2026 at 5:34 AM
A single crow flies in front of the 97.8% waxing gibbous moon tonight. 🪶
Reposted by sandra
Cats were domesticated about 10,000 years ago, when wild cats encountered the first human settlements and saw an opportunity to constantly be in the way
December 24, 2025 at 7:40 PM
Cats were domesticated about 10,000 years ago, when wild cats encountered the first human settlements and saw an opportunity to constantly be in the way
So cool!
(literally, lol)
(literally, lol)
December 25, 2025 at 2:40 AM
So cool!
(literally, lol)
(literally, lol)
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