Tag Archives: university of washington

Handful of Heavyweight Trees Per Acre Are Forest Champs

Big trees three or more feet in diameter accounted for nearly half the biomass measured at a Yosemite National Park site, yet represented only 1 percent of the trees growing there.

This means just a few towering white fir, sugar pine and incense cedars per acre at the Yosemite site are disproportionately responsible for photosynthesis, converting carbon dioxide into plant tissue and sequestering that carbon in the forest, sometimes for centuries, according to James Lutz, a University of Washington research scientist in environmental and forest sciences. He’s lead author of a paper on the largest quantitative study yet of the importance of big trees in temperate forests being published online May 2 on PLoS ONE. (more…)

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Plastic Pollution

Wind pushes plastics deeper into oceans, driving trash estimates up

Decades of research into how much plastic litters the sea may have only skimmed the surface. A new study reveals that wind drives confetti-sized pieces of plastic debris deeper underwater than previously believed, more than doubling earlier estimates of the pollutant’s presence in oceans.

“In windy conditions the traditional approach to measuring plastic marine debris captures only a small fraction of plastic pieces,” said Tobias Kukulka, assistant professor of physical ocean science and engineering in the University of Delaware’s College of Earth, Ocean, and Environment. “Our study helps to better understand how much plastic there is and where, as well as the complexity of the ocean dynamics at work.” (more…)

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Cells in Blood Vessel Found To Cling More Tightly in Regions of Rapid Flow

Clogging of pipes leading to the heart is the planet’s number one killer. Surgeons can act as medical plumbers to repair some blockages, but we don’t fully understand how this living organ deteriorates or repairs itself over time.

Researchers at the University of Washington have studied vessel walls and found the cells pull more tightly together, reducing vascular leakage, in areas of fast-flowing blood. The finding could influence how doctors design drugs to treat high cholesterol, or how cardiac surgeons plan their procedures. (more…)

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Payment Innovation Cuts Depression Time in Half

When 25 percent of the payments to community health clinics were based on quality of care, patients received better care and had better depression outcomes. The results of this initiative are published in the American Journal of Public Health.

University of Washington researchers examined records from almost 8,000 patients treated for depression in 29 community health clinics in the Washington State Mental Health Integration Program before and after the implementation of a pay-for-performance incentive. After the incentive was started, patients were seen more quickly and were more likely to receive consultation from a psychiatrist. They were also more likely to show improvements in their depression. (more…)

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Some Mammals Used Highly Complex Teeth to Compete With Dinosaurs

Conventional wisdom holds that during the Mesozoic Era, mammals were small creatures that held on at life’s edges. But at least one mammal group, rodent-like creatures called multituberculates, actually flourished during the last 20 million years of the dinosaurs’ reign and survived their extinction 66 million years ago.

New research led by a University of Washington paleontologist suggests that the multituberculates did so well in part because they developed numerous tubercles (bumps, or cusps) on their back teeth that allowed them to feed largely on angiosperms, flowering plants that were just becoming commonplace. (more…)

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Loss of Appetite Deciphered in Brain Cell Circuit

The meal is pushed way, untouched. Loss of appetite can be a fleeting queasiness or continue to the point of emaciation. While it’s felt in the gut, more is going on inside the head.

New findings are emerging about brain and body messaging pathways that lead to loss of appetite, and the systems in place to avoid starvation. (more…)

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One Year Later: Japan Quake, Tsunami a Cautionary Tale for Pacific Northwest

Sunday marks the one-year anniversary of the great Tohoku earthquake and tsunami that devastated Japan, killing more than 16,000 people and causing billions of dollars in damage.

University of Washington scientists say the event has some important lessons for the Pacific Northwest – most notably, not that a similar event can happen here but that it WILL happen here, and that this region is still much less prepared than Japan was a year ago. (more…)

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New Book Says Financial Model For Higher Ed is Broken, Offers Ways To Overhaul

Higher education, a jewel of American society and an engine of its economy, is under threat, and if the nation is to remain competitive the financial model must be overhauled, says a new book.

Authors of Financing American Higher Education in the Era of Globalization say reforming the model will take a long-term, top-level coalition composed of the president, the nation’s governors, college and K-12 leaders, and leaders in the business community. (more…)

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