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Johns Hopkins University
901 South Bond Street, Suite 540
Baltimore, Maryland 21231
Phone: 443-287-9960 | Fax: 443-287-9920

September 24, 2007
FOR IMMEDIATE RELEASE
CONTACT: Phil Sneiderman
443-287-9960
prs@jhu.edu


Ragweed Research Is Nothing to Sneeze At
Additional Photos
All photos by Will Kirk, except Photo E

microscopic image of ragweed
Photo E: This microscopic image shot by the research team shows individual pollen grains, including some that haven't fully divided or matured.
Photo by Mike Martin

Mike Martin and
Marcelo Chamecki
Photo F: In order to capture clear images of the pollen release, the researchers bound a living ragweed plant to a stake, keeping the flowers in a stationary position.

ragweed
Photo G: The students used a video camera with a closeup lense to collect images of microscopic pollen grains being released by the male flowers.

Mike Martin
Photo H: Mike Martin studies part of a ragweed plant while setting up camera equipment to capture pollen release images.

Marcelo Chamecki
Photo I: Marcelo Chamecki checks the wiring inside a meteorological tower equipped with instruments to measure solar radiation, air temperature, humidity, wind direction, wind speed and turbulence.

Mike Martin and
Marcelo Chamecki
Photo J: Marcelo Chamecki and Mike Martin constructed a tower, 6 meters high, to gather data on how weather conditions affect the spread of ragweed pollen.

Mike Martin and
Marcelo Chamecki
Photo K: Mike Martin put up this 18-foot pole, equipped with pollen catchers to gather samples from the ragweed field.

 

Additional Images of Ragweed Researchers
Mike Martin and Marcelo Chamecki

Mike Martin and
Marcelo Chamecki
Photo L

Mike Martin and
Marcelo Chamecki
Photo M

Mike Martin and
Marcelo Chamecki
Photo N

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