stream in Biological News

Spring cold snap helps with stream ecosystem research

OAK RIDGE, Tenn., July 23, 2009 -- A rare April freeze in 2007 provided researchers at the Department of Energy's Oak Ridge National Laboratory with further evidence that climate change could have negative effects on stream and forest ecosystems. As warm weather arrives sooner in many parts of ...

UMCES-led research team quantifies nutrient pollution reductions from urban stream restoration

A team of researchers led by University of Maryland Center for Environmental Science researcher Dr. Sujay Kaushal has been among the first able to quantify the amount of excess nitrogen removed from an urban stream during environmental restoration projects. This breakthrough will allow environment...

Genetically engineered corn may harm stream ecosystems

A new study indicates that a popular type of genetically engineered corn--called Bt corn--may damage the ecology of streams draining Bt corn fields in ways that have not been previously considered by regulators. The study, which was funded by the National Science Foundation, appears in the Oct. 8 ...

GEN reports biomanufacturers target a fully disposable process stream

New Rochelle, NY, March 4, 2009--The disposable bioprocessing market has moved far beyond plastic bags for buffer preparation toward a range of products for cell culture and upstream and downstream operations, reports Genetic Engineering & Biotechnology News (GEN). Increasing numbers of biomanuf...

Climate change impacts stream life

Climate change is warming Welsh streams and rivers, affecting the number and variety of some of their smallest animals, a major Cardiff University study has found. Rivers and streams are key ecosystems for many aquatic species and form important links with surrounding habitats, yet little emphas...

Urban water ecology at the ESA annual meeting

...d protect water and aquatic ecosystems. Urban stream pollution can be good for mosquitoes Sewage ove...d mosquitoes in abundance in a sewage-contaminated stream in Atlanta, but rarely in a nearby clean stream. T...d supplies for fish Freshwater fish, especially stream fish, rely on terrestrial insects as a portion of ...

'Microfluidic palette' may paint clearer picture of biological processes

...layer. These channels deliver test chemicals to the chamber. Fluid flow in and out of the short arms of each Y at constant pressure assures a constant stream of fresh chemicals. Because the pressure in the chamber is balanced by filling it previously with a buffer solution, the test chemicals that migrate f...

Jet-propelled imaging for an ultrafast light source

... pressure as it approaches the opening, squeezing and accelerating the thin stream of liquid until it is so small that the proteins or viruses dissolved in th...se even a particle bigger than the sample protein or virus bigger than the stream of liquid itself can still fly through the glass nozzle without hitting th...

First genetically-engineered malaria vaccine to enter human trials

...ost deadly to humans. By removing the genes the malaria parasite is halted during its liver infection phase, preventing it from spreading to the blood stream where it can cause severe disease and death. Their success in genetically modifying the parasite and thereby preventing its invasion of red blood ce...

Key OSU water research receives national funding

...agers could benefit greatly from having this information." The study will also examine the degree to which eastern redcedar encroachment can reduce stream flow production at the watershed level. Engle, who serves as director of the division's Water Research and Extension Center, said proliferation of ...

Wolf reintroduction proposed in Scottish Highland test case

...wing willow, aspen and cottonwood trees to thrive once again in some places, instead of being eaten as young shoots by elk. This is helping to control stream erosion. The interactive webs of birds, insects, fish and beaver are returning to health. These processes, called "trophic cascades," result when the ...

Chasing tiny vehicles

...anoparticles are just billionths of a millimeter in size. Exhibiting novel and often surprising properties, they are finding their way into an endless stream of equally innovative products. In medical therapies, for example, tiny nanovehicles could one day ferry drugs or even genes into cells. So far, the o...

Scientists closer to developing salt-tolerant crops

...species. The researchers modified genes specifically around the plant's water conducting pipes (xylem) so that salt is removed from the transpiration stream before it gets to the shoot. "This reduces the amount of toxic Na+ building up in the shoot and so increases the plant's tolerance to salinity," Pr...

All in sight

...me automatically. "We are very happy that the hardware of the system works successfully on board of Polarstern. The software is designed to search the stream of pictures for whale spout", explains Dr. Olaf Boebel, head of the research group Oceanic Acoustics at the Alfred Wegener Institute. He is in charge ...

Study shows Chronix technology using serum DNA can identify early presence of disease

...ility of using circulating fragments of DNA to detect early stage disease. These DNA fragments, referred to as serum DNA, are released into the blood stream in trace amounts during the disease process. Chronix Biomedical has developed proprietary technology that can find, isolate and identify these serum D...

Healing wounds with lasers, vehicles that drive themselves, other cutting-edge optics

...n semiconductors. Rice University physicist Daniel Mittleman and his colleagues at Sandia and Los Alamos National Labs use a metamaterial to turn a stream of THz waves off and on. It's called a metamaterial since it consists of an array of microscopic split metal rings. The rings can be controlled by nea...

Tips from the American Journal of Pathology

...s. The circulating cells entered the eye without damaging the blood-retinal barrier, and both circulating and resident immune cells entered the blood stream after removing the dead cells. Joly et al suggest that this process may "enable an immunization against retinal proteins. Specific retinal protei...

Major funding to help cut CO2 emissions

...the University of Cambridge on the oxyfuel combustion process in which coal is burned in a mix of pure oxygen and power station flue gases, creating a stream of CO 2 that can be captured for storage. Dr Trevor Drage said: "The funding brings together world leading research at The University of Nottingha...

Allscripts Integrates Electronic Health Records with Innovative Patient Kiosk

...patients want and it saves our practice time and money." Allscripts Patient Kiosk solves a common patient complaint -- the seemingly endless stream of paperwork they must fill out every time they register for an appointment. Allscripts Patient Kiosk eliminates this frustration while helping ph...

Lancet study supports new, highly effective treatment for blood disorder

...y) are sometimes taken in order to prevent the body from destroying platelet cells within the organ. However, this may put a patient at risk for blood stream infections because of the spleen's role as a filtering organ of the immune system. Promacta works by stimulating the production of cells in bone ma...

Eugene-Springfield face Upper Willamette climate threats

...rned by wildfires, although all models project more extreme fire in certain locations. The projections are expected to have far-reaching impacts on stream flows, including both the Willamette and McKenzie rivers. Among these are changes to species habitats and the potential threats to both public water s...

Lincoln Park Zoo scientists awarded National Institutes of Health grant

...new field data on stress levels with a wealth of long-term behavioral data collected since 1970 by researchers from the Jane Goodall Institute's Gombe stream Research Centre. "For nearly 40 years researchers have been following mother chimpanzees and their offspring, recording their interactions. This is...

Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil

...rticularly important for evaluating the long-term effects of agricultural land use on groundwater quality. Continuing research includes characterizing stream sediments, determining relations between sediment mineralogy and the concentration of pesticides stored on the sediments, and laboratory experiments e...

New open-source software permits faster desktop computer simulations of molecular motion

...community of researchers to leverage GPU acceleration capabilities like ATI stream technology" said Patricia Harrell, director of stream Computing, AMD. "AMD is committed to supporting open, cross platform tools ...

Novel technology could produce biofuel for around 0.50 a liter ($2.49 a gallon)

...sis. This produces a thick oily liquid containing solid particles of coke termed biosyncrude. The biosyncrude is then vaporised by exposing it to a stream of oxygen gas, before being heated at high pressures to a temperature of around 1400C. Known as gasification, this process transforms the liquid biosy...

Novel technology could produce biofuel for around €0.50 a liter ($2.49 a gallon)

...sis. This produces a thick oily liquid containing solid particles of coke termed biosyncrude. The biosyncrude is then vaporised by exposing it to a stream of oxygen gas, before being heated at high pressures to a temperature of around 1400C. Known as gasification, this process transforms the liquid biosy...

Here's venom in your eye: Spitting cobras hit their mark

...n the Department of Physical Therapy at the University of Massachusetts, Lowell. Muscle contractions squeeze the cobra's venom gland, forcing venom to stream out of the snake's fangs. The muscles can produce enough pressure to spray venom up to six feet. There are no points for distance, however. To be e...

Cell 'anchors' required to prevent muscular dystrophy

...tt said. When the protective protein layer isn't present, muscle contraction forces may break the cell membrane, toxins pour in and vital enzymes stream out. The muscle cells die. The first experiment for the new study asked if the protein dystrophin was found on the cell plasma membrane in the stud...

January-February GSA Bulletin media highlights

...ing chasm indicate that the salt pillar is due to a karstic cave that collapsed. The uppermost part of the cave still carried an underground ephemeral stream about 4000 years ago, as indicated by six carbon-14 dates of wood washed into the highest cave level. The sudden collapse that left the isolated salt ...

January GEOLOGY media highlights

...uropean settlement, and their recent demise around the middle of the twentieth century. This idea was very controversial because huge expenditures for stream restoration and watershed management are based on the idea that streams of the region are equilibrium-meandering channels adjusted to a constant bankf...

Models simulate nitrate dynamics in Garonne, Southwest France

...om the study were published in the November-December 2008 issue of the Journal of Environmental Quality . The spatial and temporal dynamics in the stream water NO3N concentrations in the Garonne watershed were first described and related to variations in climate, land management, and effluent point-sour...

Eight ASU faculty elected as AAAS Fellows

...AAS for "pioneering studies of urban social-ecological systems that conceptually expand urban resource management, and for innovative contributions in stream ecology and biogeochemistry that have stimulated decades of research." Grimm, a professor in ASU's School of Life Sciences, has for the past 10 years ...

No quick or easy technological fix for climate change, researchers say

... spray liquefied sulfur dioxide into the stratosphere? Nobody knows." In a study published earlier this year, Turco analyzed what happens when a stream of very small particles is injected into the atmosphere. He showed that when the particles are first emitted, they are highly concentrated, collide fr...

Purdue study suggests warmer temperatures could lead to a boom in corn pests

...t to manage," Krupke said. "It is resistant to several existing pesticides, and adult moths are capable of being transported long distances in the jet stream to infest new crops." Alexander said a reduction in corn yields could have substantial economic and social impacts, including higher food prices an...

Climate-change set-back for acidified rivers

...ut in 14 streams, the research involved assessing the number and variety of stream insects present each year. The scientists measured concentrations of acid and other aspects of stream chemistry, and documented climatic variation such as warmer, wetter winters...

Low-carb diets can affect dieters' cognition skills

...ts primary fuel, it has no way of storing it. Rather, the body breaks down carbohydrates into glucose, which is carried to the brain through the blood stream and used immediately by nerve cells for energy. Reduced carbohydrate intake should thus reduce the brain's source of energy. Therefore, researchers hy...

Golf course: Playing fields, wildlife sanctuaries or both

...UMBIA, Mo. "FORE"...Though they may not help improve a person's golf game, stream salamanders might change the way golfers think about the local country club... with 10 golf courses in North Carolina, Semlitsch and Mackey are measuring stream salamanders' abundance and diversity in order to make biologically relevant...

Climate change setback for acidified rivers

...ut in 14 streams, the research involved assessing the number and variety of stream insects present each year, measuring concentrations of acid and other aspects of stream chemistry, and documenting climatic variation such as warmer, wetter winter...

NIST, NCI bring web 2.0 tools to nanotechnology standards effort

...s of engineered nanoscale materials. The global market for nanotechnology-enabled products is forecast to top $3 trillion by 2015. This anticipated stream of nanotech innovations has spawned a backlog of standards needs. The idea for the Web-based collaboration was strongly endorsed during a recent in...

The next step in health care: Telemedicine

...rch collaborations with scientists around the world," Conde adds. "Previous efforts in telemedicine have been hampered by the quality of the video stream produced and the potential for network interruptions," says Gurcharan Khanna, director of research computing at RIT and a member of the research team....