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Month: September 2011

Traffic Control – Using XML to Communicate

Traffic Control – Using XML to Communicate

As an alternative to the gas analyzer Windows® Interface software supplied with our instruments, our analyzers can be fully configured and programmed using simple text based (XML or similar) configuration language over RS-232 or Ethernet. This provides the flexibility to communicate with and configure the instrument using terminal programs (HyperTerminal, TeraTerm, etc.), LabView or other programming environments.While developing the protocol, or for regular communication later on, streamlining the traffic over the RS-232 or Ethernet port can be very useful.

This…

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When Ambient H2O Is Not Leaf Chamber H2O

When Ambient H2O Is Not Leaf Chamber H2O

The LI-6400XT can control CO2, H2O, light, and temperature within the leaf chamber, which allows flexibility and consistency in gas exchange measurements. It also allows researchers to keep the leaf chamber conditions as close to ambient conditions as possible, to speed up survey measurements and gather as much good data as possible in a sampling period.

However, ambient is not always ambient, especially when referring to humidity in the chamber. The LI-6400XT system strips the boundary layer from the leaf…

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Changing lives – One LEEF at a time

Changing lives – One LEEF at a time

This is a guest contribution to NewsLine provided by Elise Wygant. Elise began her studies in plant physiology under Dr. Rebecca E. Drenovsky, a LEEF (LI-COR Environmental Education Fund) recipient at John Carroll University. Inspired to pursue science, now she is a doctoral student at Dr. Lisa Donovan’s Evolutionary Ecophysiology lab at the University of Georgia.

I am a plant biologist. Of course, I didn’t always know this. I started out in the pre-dentistry track through John Carroll…

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Hypothetically Speaking, Nothing is Impossible

Hypothetically Speaking, Nothing is Impossible

Hypothetically speaking, nothing is impossible.

Until recently, it was widely believed that it was not possible to accurately determine eddy fluxes directly from the gas mixing ratio computed by a gas analyzer without the WPL density corrections.  However, a team of LI-COR scientists, aided by the AmeriFlux QA/QC team, member of the USDA, and University of Alaska scientists, have turned this theoretical impossibility into a proven possibility. The good news: this greatly simplifies flux calculations!

Previously, no instrument was capable…

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