Navigation Links
Ragweed research is nothing to sneeze at
Date:9/24/2007

ndation for their doctoral theses.

Although neither of them is allergic to ragweed, the students know how easily it can trigger a response among those who are. Concentrations of fewer than 10 pollen grains per cubic meter can cause an allergic reaction in people who are sensitive to ragweed, said Martin, who is from Lafayette, La. During our field research, we found concentrations of 10,000 grains per cubic meter in the air above the plants. My clothes were stained yellow with pollen.

Although ragweed is not new to North America, other scientists have determined that it has spread significantly throughout the continent since the arrival of European settlers. The newcomers cleared shady forest areas to create farmland, enabling ragweed to flourish in the sunny new open spaces. Im trying to develop a detailed description of the recent evolution of ragweed populations, Martin said. I want to know how the plants structure and behavior have influenced its success as an invasive weed. If we can understand how ragweed was adapted to its prehistoric environment, we may find better ways to control its harmful effects in the present day by predicting when the pollen will be released and where it will end up.

His fellow researcher has somewhat different aims. My main interest is learning how the wind spreads the pollen under different turbulence and temperature conditions, said Chamecki, who is from Curitiba, Brazil. I want to use the data from our field experiments to develop and calibrate a computer model. This model could be used to predict how pollen grains are likely to spread under different topographic and atmospheric conditions. If the computer model works for ragweed, it should also work for other types of pollen and other tiny airborne particles and organisms like bacteria, soot and even snowflakes.

In the immense ragweed field, the graduate students gathered data by first marking off 25 randomly selected study sites, each m
'/>"/>

Contact: Phil Sneiderman
prs@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants
3. Columbia research lifts major hurdle to gene therapy for cancer
4. Researchers find how protein allows insects to detect and respond to pheromones
5. Researchers Uncover Key Step In Manufacture of Memory Protein
6. Research advances quest for HIV-1 vaccine
7. Research on Worms Yields Clues on Aging
8. U of M researcher examines newly emerging deadly disease
9. NYU researchers simulate molecular biological clock
10. Researchers reveal the infectious impact of salmon farms on wild salmon
11. Researchers identify target for cancer drugs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/15/2014)... Dec. 12, 2014 Research and Markets ... of the "Global Facial Recognition Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 Facial recognition ... individuals. Facial recognition system measures the overall facial ... edges, mouth, and the distance between eyes. Facial ...
(Date:12/11/2014)... 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the addition of ... report to their offering. One ... adoption of multimodal biometric systems. Multimodal biometric systems ... for verification and identification purposes. This helps to ...
(Date:12/11/2014)... 10, 2014  Data Sciences International (DSI), the ... a new series of digital telemetry implants to ... M series, part of the PhysioTel™ Digital platform, ... possible physiologic data when incorporating functional endpoints into ... to toxicology studies has evolved from short ECG ...
Breaking Biology News(10 mins):Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2New telemetry implants expected to change how large animal toxicology studies are conducted 2
... Japan -- In what may prove to be a ... gasses has just become considerably easier. Using a ... Kyoto University,s WPI Institute for Integrated Cell-Material Sciences (iCeMS) ... of low cost, high efficiency separation. The process ...
... MADISON, WI June 22, 2012 Buttery shrimp. Fried ... be a biological reason why fatty and cholesterol-rich foods are ... than 40 years that dietary fat promotes cholesterol uptake, but ... Ph.D., and his colleagues at the Carnegie Institution for Science ...
... asks children who have each been assigned a wetland plant ... other "organisms" their assigned plant or animal interacts with in ... the teacher describes an event that affects one "organism." That ... tug then tug on their strings in turn. The ...
Cached Biology News:Faster, cheaper gas and liquid separation using custom designed and built mesoscopic structures 2Zebrafish research shows how dietary fat regulates cholesterol absorption 2Foundational concept of ecology tested by experiment 2Foundational concept of ecology tested by experiment 3Foundational concept of ecology tested by experiment 4
(Date:12/19/2014)... -- Naurex Inc., a biopharmaceutical company leveraging its unique ... central nervous system, today announced that Norbert Riedel ... at the 33 rd annual J.P. Morgan Healthcare ... p.m. PST on Tuesday, January 13, 2015, at the ... About Naurex Inc. ...
(Date:12/19/2014)... FL (PRWEB) December 18, 2014 ... the nation’s leading specialty pharmacies, has an expanded ... as clinical pharmacy consultants for prescriber offices in ... expertise. , “We have a variety of ... For example, those specializing in hepatitis C help ...
(Date:12/19/2014)... MA (PRWEB) December 18, 2014 iLab ... announced the appointment of Siri Bryant as the new ... new Director of Core Implementations. These two new leadership ... outstanding customer service by ensuring that iLab continues to ... “In the last four years, iLab has been deployed ...
(Date:12/19/2014)... 18, 2014 Egenix, Inc. is pleased to announce ... of the Board, to succeed Donald Fresne ; Mr. ... continue as a member of the Board.  In recognition of ... the company over almost twenty years, the Board designated Mr. ... Directors has established a Search Committee to find a suitable ...
Breaking Biology Technology:Naurex to Present at 33rd Annual J.P. Morgan Healthcare Conference 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 3iLab Solutions Announces Two New Leadership Positions to Meet the Needs of Its Growing Customer Base 2
... (NYSE: SGP ) is scheduled to announce its sales ... 21, 2009. , , At approximately 7:45 a.m. ... review results for the 2009 second quarter. Fred Hassan, Schering-Plough,s ... conference call. , , To listen live to the ...
... Ind., June 29 Hill-Rom (NYSE: HRC ) ... relating to Negative Pressure Wound Therapy (NPWT) to Kinetic Concepts, ... included U.S. and foreign patents and patent applications covering innovations ... effective immediately. Terms were not disclosed. , , ...
... SAN MATEO, Calif., June 29 NeurogesX, Inc. ... been added to the broad-market Russell 3000(R) and small-cap Russell(R) ... market June 26, 2009 when Russell Investments reconstituted its U.S. ... of Russell,s U.S. indexes captures the 4,000 largest U.S. stocks ...
Cached Biology Technology:Schering-Plough Schedules Conference Call Webcast for 2009 Second Quarter Earnings 2Hill-Rom Announces Sale of Negative Pressure Wound Therapy Intellectual Property 2Hill-Rom Announces Sale of Negative Pressure Wound Therapy Intellectual Property 3NeurogesX Added to Russell 3000 Index 2NeurogesX Added to Russell 3000 Index 3NeurogesX Added to Russell 3000 Index 4
... Goat anti-Human Alpha 1 ... sodium azide Goats were ... Alpha-1-acid glycoprotein in Freund's adjuvant. ... phase absorbed to ensure specificity. ...
Purified Mouse anti-Hu p120 Catenin (pT916) Storage Temperature: Refrigerate(2 to 8C)...
synphilin-1 (V-19)...
Anti-OSMR Monoclonal Antibody Research Focus: cytokine/growth factor Storage: 4C Shipping Temperature: 4C...
Biology Products: