# NASA PSI Users Group Presentation by Prof. Marshall Porterfield **URL:** \ **Category:** AWG Discussions\ **Tags:** leaf, psi\ **Created:** [August 10, 2026, 9:00pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437 "2026-08-10T21:00:24Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Subhayu](https://avatars.discourse-cdn.com/v4/letter/s/6f9a4e/32.png) [@Subhayu](https://awg.osdr.space/u/Subhayu)\ **Post date:** [August 10, 2026, 9:00pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/1 "2026-08-10T21:00:24Z")
**Mass Transport and Diffusion Limitations to Human Spaceflight: Biophysical Research Approaches for Studying the Lunar Effects on Agricultural Flora (LEAF) on Artemis 4.** > **PSI User Group: Lunar LEAF project, Marshall Porterfiled** > > **Starts:** August 13, 2026, 9:00am (America/Los\_Angeles)\ > **Ends:** August 13, 2026, 10:30am (America/Los\_Angeles)\ > **Location:** https://teams.microsoft.com/meet/283824756712761?p=uBS9P18hszBy0BZhAa > > Join: [Join conversation](https://teams.microsoft.com/meet/283824756712761?p=uBS9P18hszBy0BZhAa) > > Meeting ID: 283 824 756 712 761 > > Passcode: Tx94Ve7h > > Dial in by phone > > +1 256-715-9946,733941619# United States, Huntsville > > Find a local number > > Phone conference ID: 733 941 619# [@AWGall](https://awg.osdr.space/groups/awgall) ---
**Author:** ![dr.richard.barker](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/dr.richard.barker/32/10_2.png) [@dr.richard.barker](https://awg.osdr.space/u/dr.richard.barker)\ **Post date:** [August 13, 2026, 3:28pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/2 "2026-08-13T15:28:03Z")
When is this happening? ---
**Author:** ![rtscott2001](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/rtscott2001/32/5_2.png) [@rtscott2001](https://awg.osdr.space/u/rtscott2001)\ **Post date:** [August 13, 2026, 3:34pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/3 "2026-08-13T15:34:08Z")
In just under 30 mins, at 9a PT ---
**Author:** ![Abhinav](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/abhinav/32/1429_2.png) [@Abhinav](https://awg.osdr.space/u/Abhinav)\ **Post date:** [August 15, 2026, 4:00am UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/4 "2026-08-15T04:00:45Z")
Thank you for sharing the slides - was this recorded by any chance? I tried to join the meeting but was denied entry ☹ ---
**Author:** ![rtscott2001](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/rtscott2001/32/5_2.png) [@rtscott2001](https://awg.osdr.space/u/rtscott2001)\ **Post date:** [August 15, 2026, 5:11am UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/5 "2026-08-15T05:11:03Z")
Just sent you an email 🙂 Sorry you were denied entry, that doesnt make sense, you definitely were welcome to attend, so must have been a technical glitch or misclick by someone? ---
**Author:** ![Abhinav](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/abhinav/32/1429_2.png) [@Abhinav](https://awg.osdr.space/u/Abhinav)\ **Post date:** [August 15, 2026, 4:56pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/6 "2026-08-15T16:56:35Z")
Not a problem - the slide deck is nice, thank you for sharing. ---
**Author:** ![rtscott2001](https://sea1.discourse-cdn.com/flex001/user_avatar/awg.osdr.space/rtscott2001/32/5_2.png) [@rtscott2001](https://awg.osdr.space/u/rtscott2001)\ **Post date:** [August 15, 2026, 8:27pm UTC](https://awg.osdr.space/t/nasa-psi-users-group-presentation-by-prof-marshall-porterfield/4437/7 "2026-08-15T20:27:16Z")
Gosh, super sorry you were somehow denied from entry. It was a decent numnber of attendees. Think the world of you good sir @Abhinav