Good news: As you age, leg blood vessels adapt so you can still exercise without fainting
...- plunging a hand into a bucket of ice while still cycling -- and compared the blood vessel reactions in the legs of both age groups. Editors note: Proctor is speaking at the American Physiological Society's 2004 Intersociety Meeting, "The Integrative Biology of Exercise," Oct. 6-9 in Austin. The meeti...UGA scientist Moran receives $2.6 million from Gordon and Betty Moore Foundation for marine research
...earch on marine bacteria that are important in the cycling of carbon and sulfur in the coastal ocean. Moran, a professor in UGA's marine sciences department, studies bacteria that are critical to the marine food web and the sulfur cycle of the ocean. Her research ...Microbe's genome reveals insights into ocean ecology
... how microbes control carbon, sulfur, and nitrogen cycling on a global scale." The project was led by UGA's Moran and by TIGR scientist Naomi Ward, who is the paper's senior author. Other collaborators included: Ron Kiene of the University of South Alabama; Gary King of the University of Maine; Clay F...Microbe's genome promises insight into Earth's carbon and sulfur cycling
... organisms that likewise mediate carbon and sulfur cycling in the ocean. Moran continued, "Admittedly, this is not the only bacterium that influences gas exchange between the ocean and atmosphere, but once we understand how S. pomeroyi functions, we can apply the knowledge to other related marine bacteria." ...High-flying observatory reveals land changing to desert
...picture of the processes at work, including carbon cycling and other chemical and biological activities. The entire study region was about 500 square miles (800 square kilometers). Each data pixel covered an area 62 feet by 62 feet (19 meters) and looked at the ecosystem-climate interactions of grasslands,...Desertification alters regional ecosystem climate interactions
...picture of the processes at work, including carbon cycling and other chemical and biological activities. The entire study region was about 500 square miles (800 square kilometers). Each data pixel covered an area 62 feet by 62 feet (19 meters) and looked at the ecosystem-climate interactions of grasslands,...New system can measure productivity of oceans
...al change in how they can model and observe carbon cycling in the global oceans....One step closer to prediction: Baltimore to host international scientific meeting
...ong's red tides; comparative analysis of nutrient cycling and phytoplankton communities in Florida and Australia; coastal applications of ocean observing systems; and environmental assessments of Kuwait's waters. Full details of the program are available for review at http://www.jhu.edu/scor/ProgramBook....Discovery clarifies role of peptide in biological clock
...nd that many had lost their beat while others were cycling but unable to synch to each other. But when Herzog and Aton added VIP to the mice cells, the synchronicity was restored, showing that VIP couples pacemaker cells and drives rhythms in slave cells. "VIP between SCN neurons is like a...Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra
.... Evidence that more ocean-derived nutrients were cycling through the ecosystems of fox-free islands than on fox-infested islands came from analyses of nitrogen isotopes in soil, plant, and animal samples. "The terrestrial ecosystem was being subsidized by marine-derived nutrients, and the foxes basically ...A few 30 second sprints as beneficial as hour long jog
...tween four and seven 30-second bursts of "all out" cycling followed by four minutes of recovery three times a week for two weeks. Researchers found that endurance capacity in the sprint group increased on average from 26 minutes to 51 minutes, whereas the control group showed no change. The muscles of the t...Pediatric center to offer novel rehabilitation approach for spinal cord injury
...stored through patterned physical activity such as cycling or walking movements," said Dr. John McDonald, Director of the International Center for Spinal Cord Injury. "Expanding this research through a world-class organization like Kennedy Krieger helps realize the dream of improving the lives of children a...Lance Armstrong through a physiological lens: hard training boosts muscle power 8%
...muscular efficiency and thus power production when cycling at a given maximal oxygen uptake." Combining the i...ng in the June issue of JAP reports on a different cycling approach: "Six sessions of sprint interval training increases muscle oxidative potential and cycle e...Researchers explore ecological issues at annual meeting
...dual fish species contribute to aggregate nutrient cycling and thus how eroding biodiversity may affect proce...s to the habitat, can significantly alter nutrient cycling in these ecosystems. "The implication of this work is that human modification of the make-up of anim...Amazon source of 5-year-old river breath
...America's Amazon basin are "breathing" far harder cycling the greenhouse gas carbon dioxide more quickly than anyone realized. Most of the carbon being exhaled or outgassed as carbon dioxide from Amazonian rivers and wetlands has spent a mere 5 years sequestered in the trees, other plants and soils of ...The ecological effects of the Chernobyl disaster
...nmental self-cleaning in the talk, "Biogeochemical cycling of radionucleotide: Implications for the human foo...rch Institute) presentation, "The distribution and cycling of 137Cs in forests of the Chernobyl exclusion zone," will focus on 137Cs levels in three 50-year ol...Field tested: Grasslands won't help buffer climate change as carbon dioxide levels rise
...s respond to global changes in climate and element cycling is critical to predicting the range of global environmental changes--and attendant ecosystem responses--likely to occur. In a new study in the premier open access journal PLoS Biology Jeffrey Dukes, Christopher Field, and colleagues treated grassla...Microbe has huge role in ocean life, carbon cycle
...ther cells would die, and plays a huge role in the cycling of carbon on Earth. In nature, apparently, bigger is not always better. In a publication today in the journal Science, scientists outlined the growing knowledge about SAR11, a group of bacteria so dominant that their combined weight exceeds that o...Illinois research zeroing in on optimum soil nitrogen rates
...The extra residues have an effect on soil nitrogen cycling and availability, and can increase the critical le...said. "There is an inherent link between microbial cycling of carbon and nitrogen that has long been overlooked in managing nitrogen fertilizers. With higher p...A water tale for all seasons: When it comes to hydration and exercise, the system works
... by 3% of body weight had little adverse impact on cycling performance in the cold (36F), but markedly reduced performance in temperate air (68F). "We induced a 3% body weight loss because that's about how much water the average marathon runner loses," Cheuvront noted. The team found that while this much deh...