Tag: "drainage" at biology news

Restoring wetlands much more than 'just add water'

...o the next wetland. Swales (intermittently flooded drainage areas) and rivers, however, can connect wetlands. Much remains to be discovered about how species disperse into wetlands and become abundant and what factors determine species dispersal and survival. One thing is clear, however: Restoring wetlands d...

Humboldt awarded for study of acid-mine drainage in Germany

... work in Germany on acid-mine drainage. "Acid-mine drainage is an environmental problem of vast proportion," s... of kilometers. They also studied where acid-mine drainage originates and is most acute.With the Humboldt award, the two researchers will continue the most cri...

Rutgers-led research team finds Hudson River is cleaning itself

...t plants andother facilities near the Hudson River drainage basin. The scientistsnote, however, that the cleanup is significantly aided by naturalprocesses occurring during the sediment resuspension events. The researchers took samples of sediment and water at two strategicpoints in the estuary during the yea...

Baxter's HomeChoice Pediatric dialysis system receives market clearance from FDA

...such as HomeChoice Pediatric, for instillation and drainage of the dialysis solution, and CAPD is performed using a gravity-based technology instead of the use of a machine.More than 300,000 people in the United States, or just over one in 1,000 Americans, are being treated for ESRD. And, approximately 1,000...

Scientists use llama droppings to help combat water pollution

...ch. In the Cordillera Real of the Andes, perennial drainage from abandoned tin and silver mines is grossly pol...vious data exist on their performance in acid mine drainage remediation systems'. Professor Younger and his colleagues constructed a series of tanks in which ...

Comparing ag and industrial runoff between estuaries

...uare miles) and is 53 meters (174 feet) deep. The drainage basin, or watershed area, for the gulf is 194,000 square kilometers (74,904 square miles). The nitrogen load for the Gulf of Gdansk is 5 millimoles per meter squared per day, says Swaney. That is more than twice the nitrogen in the Chesapeake Bay a...

Green roofs cool for summer, environmentalist says

... layer of soil and wildflowers on top of a special drainage layer and a root-repellent, waterproof membrane. The researchers found that the green roof was effective at maintaining a cooler summertime roof surface temperature, reduced storm water run-off and kept summer temperatures inside the structure lower ...

Geologists show how wetlands can clean up acid mine drainage

...America meeting in Lexington, Kentucky. Acid mine drainage is a global problem that results when chemical rea...e three primary problems associated with acid mine drainage are damage to wildlife and cultural resources, the release of toxic chemicals and heavy metals, and ...

Improving water use in growing corn possible, study shows

...northern coastal plain of Virginia. "Water lost to drainage and runoff is not only lost to the corn crop, but ... water produced higher yields, had less runoff and drainage losses, and had higher water-use efficiencies than sandy soils with lower capacity to hold rainfall....

MIT team probes arsenic and old lakes

...s part of the Aberjona Watershed, a 25-square-mile drainage basin that includes parts of seven Massachusetts communities (Woburn, Winchester, Wilmington, Lexington, Burlington, Reading and Stoneham). For over a century, hundreds of tons of toxic wastes from leather, chemical and other industries were dumped i...

Study sheds light on mess in polluted streams

... our understanding of the damaging effects of mine drainage and acid rain. According to the team's report in this Friday's issue (Sept. 27) of the journal Science, the gel results when runoff made acidic by mining or acid rain collects aluminum from local soils and then mixes with stream water that is less ac...

Researchers create new strategy for removing arsenic from soil

...ough natural occurrences of arsenic and spills and drainage from chemical and manufacturing plants, by far the most serious problems involved drinking water. In the Indian state of West Bengal and in Bangladesh, the problem is a crisis, and researchers estimate that more than 112 million people are afflicted ...

UMass team to study bioremediation of acid, heavy metals from collapsed mind

AMHERST, Mass. Highly acidic drainage from an abandoned sulfide mine in Rowe is slowly c...ne shafts, and flows down the stream channel." The drainage waters are more acidic than vinegar, with pH values around 2, and carry large loads of metals, inclu...

Shifts in rice farming practices in China reduce greenhouse gas methane

...or in the absence of air or free oxygen. Midseason drainage aerates the soil again, and hence interrupts methane production. Li and his colleagues recorded reductions in methane caused by draining practices at several experimental sites in China and the U.S. At the same time, they observed that the amounts ...

Wetlands clean selenium from agricultural runoff

...ge of 69.2 percent of the selenium in agricultural drainage water. More significantly, some plant populations ...working in concert to take the selenium out of the drainage water," said Terry. "The extensive root system of the plants slows down the water flow so the seleni...

JCI table of contents, March 3, 2003

...C, once thelymphatic connection is re-established, drainage function can be maintained. CONTACT: Douglas W. Losordo St. Elizabeth's Medical Center Division of Cardiovascular Research 736 Cambridge Street Boston, MA 02135-2997 USA Phone 1: 617 789-3346 Fax 1: 617-779-6363 Fax 2: 617-779-6362 E-mail: douglas.l...

Researchers identify new gene mutation in glaucoma

...mice, the scientists found malformations of ocular drainage structures that normally control pressure as the l...have abnormalities or decreased functioning of the drainage structures, the input of aqueous humor can result in increased intraocular pressure and the very nas...

Gene mutation exacerbates eye defect in inherited glaucoma

...mice, the scientists found malformations of ocular drainage structures that normally control pressure as the l...have abnormalities or decreased functioning of the drainage structures, the input of aqueous humor can result in increased intraocular pressure and the very nas...

Virginia Tech inventions, creations can improve lives

...proves the efficiency of removing water during the drainage period of the centrifugal filtration process, lowering the amount of the residual water left in the filter cake. Three wheat varieties and a new peanut received plant variety protection (PVP) and a new raspberry received a plant patent (PP). The thre...

How far to the nearest road?

... the roads themselves, altering habitats and water drainage patterns, disrupting wildlife movement, introducing exotic plant species, and increasing noise levels." To analyze nearness of roads at the regional scale, Riitters and Wickham used four different maps of landcover, roads, watersheds, and ecoregions....

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