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Linsey Marr @linseymarr.bsky.social · 19h

Glad to have the support of Representative Morgan Griffith for our new ARPA-H BREATHE award @virginiatech.bsky.social!

morgangriffith.house.gov/news/documen...

U.S. Representative Morgan Griffith

“ARPA-H is dedicated to reducing airborne threats to human health.

morgangriffith.house.gov

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Linsey Marr @linseymarr.bsky.social · 3d

I'm not teaching environmental chemistry. The carbonate and phosphate systems are on the whiteboard because Alex and I were mulling over their buffering role in saliva droplets. 😀

Linsey Marr @linseymarr.bsky.social · 4d

MUON

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Linsey Marr @linseymarr.bsky.social · 4d

We didn't see any evidence of increased particles, either due to low ozone and/or low terpenes and/or the Dylos particle counter's inability to detect particles in the relevant size range. @osluv.bsky.social

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Linsey Marr @linseymarr.bsky.social · 4d

You know Jeff Siegel is in town when he whips out deodorant to see if its terpene emissions react with ozone from my new far-UVC lamps to generate secondary aerosol.

He gave a great seminar about HVAC filter forensics!

www.sciencedirect.com/science/arti...

www.sciencedirect.com/science/arti...

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Linsey Marr @linseymarr.bsky.social · 4d

MUCIN

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Reposted by Linsey Marr

Colette Heald @coletteheald.bsky.social · 8d

We have a new PhD project to study ozone formation from fires. If interested in atmospheric chemistry, fires, living in Zurich, and studying at ETH, consider applying here: jobs.ethz.ch/job/view/JOP...

PhD Position in Atmospheric Chemistry

jobs.ethz.ch

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Linsey Marr @linseymarr.bsky.social · 8d

We're focusing on daycare centers, while one of the other teams will focus on schools.

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Linsey Marr @linseymarr.bsky.social · 8d

Depends how you define "the next few years." 😉 We hope the innovations become widely available as soon as possible.

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Linsey Marr @linseymarr.bsky.social · 8d

I'm laughing so hard that I'm snorting!

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Linsey Marr @linseymarr.bsky.social · 8d

Others in past bees that bug me: CAVITATION, ZOONOTIC,...

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Linsey Marr @linseymarr.bsky.social · 8d

Not in this project, but hopefully in another one.

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Linsey Marr @linseymarr.bsky.social · 8d

I'm thrilled to be leading, along with AJ Prussin II, an ARPA-H BREATHE team that will integrate new biosensors, risk assessment software, and engineering controls to bring clean and healthy indoor air to more buildings.

arpah.gov/news-and-eve...

BREATHE research teams kick off efforts to enhance indoor air quality to improve health, advance the future of smart buildings

The Advanced Research Projects Agency for Health (ARPA-H) supports transformative research to drive biomedical and health breakthroughs ranging from molecular to societal to provide transformative hea...

arpah.gov

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Linsey Marr @linseymarr.bsky.social · 8d

I found the answer to my question: "Sentinel pigs became infected after 1 day of exposure to the infectious aerosols (results not shown)."

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Linsey Marr @linseymarr.bsky.social · 8d

Right! I wonder if some of it is resuspended from skin or the ground. I also wonder if the methods used to date, aside from this study, may underestimate viral RNA in larger particles due to sampling artifacts such as inlet losses. My big question: did pigs in isolator 3 get infected?

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Reposted by Linsey Marr

Joe Allen @joeallenjoe.bsky.social · 9d

Now with update 🙌

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Linsey Marr @linseymarr.bsky.social · 9d

Influenza A virus RNA found in airborne particles from pigs across a range of particle sizes. For reference a 10 micron particle takes ~8 minutes to settle to the ground from a height of 5 feet. That's plenty of time for it to drift around and be inhaled by others.

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Linsey Marr @linseymarr.bsky.social · 9d

National Academies @health.nationalacademies.org Workshop on Personal Protective Equipment for Influenza A (H5N1) in High-Risk Farm Settings happening now at www.nationalacademies.org/event/45411_...

www.nationalacademies.org

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Linsey Marr @linseymarr.bsky.social · 13d

Glad to see the toxic fume problem being addressed. Gift link to unlocked article:

www.wsj.com/business/air...

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Linsey Marr @linseymarr.bsky.social · 13d

The momentum for clean indoor air continues to build. I attended the inaugural High-Level Side Event on indoor air quality at the UN General Assembly yesterday. Short remarks by Lidia Morawska @joeallenjoe.bsky.social @isiaq.bsky.social Pres. Kerry Kinney, ASHRAE, WHO, UNEP, many others.

People in conference room at the UN building

The global pledge for healthy indoor air: That clean indoor air is a fundamental human right for protecting health and safeguarding well-being

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Linsey Marr @linseymarr.bsky.social · 15d

Lots of research groups have been working on this problem for a while. My lab is not collaborating with the University of Valencia.

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Linsey Marr @linseymarr.bsky.social · 15d

Good question! I don't know enough about plants, their specific emissions, and pollination to hazard a guess. Sounds like an interesting research topic for someone.

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Linsey Marr @linseymarr.bsky.social · 16d

Fascinating new observations about the corpse plant, such as, "the corpse plant’s powerful emission rates can be an order of magnitude stronger than landfills – albeit only for two nights." Most-emitted compound? Methanethiol, a skunky compound.

Delphine Farmer @chemdelphine.bsky.social · 16d

A rare bloom of Cosmo, CSU’s corpse plant, gave my group (Rose Rossell and @chemj.bsky.social) the chance to study corpse flower emissions in a fun collaboration with Tofwerk. Turns out to be an interesting, if stinky, story of pollination chemistry…

How a corpse plant makes its terrible smell − it has a strategy, and its female flowers do most of the work

When a corpse flower bloomed on campus, atmospheric scientists got to work. What they discovered provides new evidence about the unique pollination strategies of a very unusual flower.

theconversation.com

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Linsey Marr @linseymarr.bsky.social · 21d

Probably. I'm guessing that "nanobubbles" of ozone are an attempt at regular ozone disinfection, which is used for water and wastewater in treatment plants where conditions are more controlled, and other processes have been used to remove much of the solid and dissolved material.

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Linsey Marr @linseymarr.bsky.social · 22d

Very cool! Congratulations!

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