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sand in Biological News

Biological sand filters, a practical approach to combat poverty and inequality

Ottawa, Canada - September 24, 2008 -Microbiologically contaminated water plagues approximately 1.1 billion people in rural and peri-urban populations in developing countries. Roughly 2.2 million people without safe access to drinking water die each year from the consumption of unsafe water, and m...

Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico

Identical twins lose some fundamental similarities as they grow older, a new study reports. They may start to look and act less alike. The changes could leave one twin susceptible to diseases like cancer, while the other twin remains healthy. Researchers report in this week's Proceedings of th...

Carnegie Mellon's Jean VanBriesen leads research team on Monongahela River

...0 trillion cubic feet of natural gas," VanBriesen said. Developers using hydraulic fracturing, which involves injecting water and sand into major shale formations to help natural gas flow up a well, will need millions of gallons of water to complete the process at well sites. Water th...

Arctic climate under greenhouse conditions in the Late Cretaceous

...retaceous winter temperatures rather than recent suggestions of a 15C mean annual temperature at this time." The size distribution of clay and sand grains in the sediment points to the formation of sea ice in shallow coastal seas during autumn storms but suggests the absence of larger drop-stones ...

UNH researcher receives presidential environmental award

... marine science. In Ninigret Pond, construction of stone jetties half a century ago had created a natural funnel that deposited large amounts of ocean sand inside the ponds, burying formerly plentiful eelgrass beds. Short's contributions to the effort included field work to determine what factors were ...

Zebra mussels hang on while quagga mussels take over

...usin species are different in many ways, too. Zebra mussels prefer to attach to a hard surface, while quagga mussels can live on soft bottoms, such as sand or silt. Zebra mussels also prefer warmer water temperatures and do not grow as big as quagga mussels. Peyer's research focused on the ability of t...

Mars mission could ease Earth's energy supply crisis

...cal environment on Mars. We aim to show that the same technique could also be used to recycle the prodigious amounts of water necessary to process tar sand deposits and turn them into conventional petroleum." Usable energy resources are essential to the global economy. Conventional crude oil is a stap...

Fossil bone bed helps reconstruct life along California's ancient coastline

... if they lay on the seafloor for a long time and were abraded by water with sand in it." Many bones had manganese nodules and growths, which form on bones t...s going on, possibly related to rising sea levels that snuffed out silt and sand deposition or restricted it to the very near-shore environment," Pyenson sa...

First 'nanorust' field test slated in Mexico

...nvironmental engineering and CBEN faculty expert in water treatment, said Rice's team plans to test nanorust-coated sand. The material will be used in sand filters to treat groundwater from wells. The water treated with nanorust will be kept separate from the water that is released for human consumption, ...

Voyages of discovery or necessity?

...large, carnivorous reef fish, causes vomiting, headaches, and a burning sensation upon contact with cold surfaces. An early morning walk on cool beach sand can become a painful stroll on fiery coals to a ciguatera victim. But is this common toxin poisoning also the key to a larger mystery? That is, the s...

True grit

...ium calcite crystals, which allows these crystals to spread over the entire surface of the tooth. The presence of magnesium calcite crystals acts like sand paper that helps to grind the rock down. In the latest study, the researchers used X-ray photoelectron emission spectromicroscopy and other high-r...

Symposia selected for Entomological Society of America meeting

...ess of Global Insect Repellent Science Research Celebration of Entomology: Advances in Stable Fly (Stomoxys calcitrans) Research Novel Ideas in sand Fly Research: Classification and Systematics, Epidemiology, and Molecular Interactions Vector-borne Disease and Public Health Protection by the Fed...

Large sponges may be reattached to coral reefs

...ved along with debris by strong currents. After these events, detached large sponges are commonly found, still alive and intact, between reef spurs on sand or rubble where they slowly erode under the action of oscillating currents. "The worldwide decline of coral reef ecosystems has prompted many local...

American Chemical Society Weekly PressPac -- April 1, 2009

...asis for developing drugs or vaccines against diseases transmitted by the black fly and other blood-sucking insects, including mosquitoes, midges, and sand flies, the researchers say. - MTS ARTICLE #2 FOR IMMEDIATE RELEASE "Insight into the Sialome of the Black Fly, Simulium vittatum DOWNLOAD FULL ...

April 2009 Geology and GSA Today media highlights

...sculpt the seafloor beneath their course. In places, they generate ripples, sand waves, and giant mud waves over the backs of huge sediment mounds, while el... considered to be sisters of the small wind ripple commonly formed in beach sand and dunes. Continued study may help in the understanding of the effect of v...

Transport behavior of E. coli varies depending on manure source

...e charge were observed to vary by over an order of magnitude for the 12 different E. coli isolates. The total amount of bacteria passing through the sand columns ranged from less than 2% for one of the horse isolates to 95% for one of the beef cattle isolates and the fitted model parameters ranged by a ...

Darwin anniversary heralds new conservation research era for Northern Ireland

...lagship species such as the Irish hare and red squirrel but will also focus on important habitats including marine protected areas, threatened coastal sand dunes and the Lough Neagh ecosystem. Professor Ian Montgomery, Head of the School of Biological Sciences, added: "The work will break fresh ground...

American Chemical Society's weekly PressPac -- Jan. 14, 2009

...ogrippers shaped like a hand that work without electricity. The grippers are about 0.03 inches wide when open smaller than the diameter of a grain of sand and made from a gold-coated nickel "palm" joined by six pointy metallic "fingers." The addition of certain chemicals triggers the hands to open or clo...

AGU journal highlights -- Dec. 31, 2008

...doi.org/10.1029/2008GL035866 3. Speediest sand dunes clocked from space Monitoring the speeds of migrating dunes and the volumes of sand transported over time is important to understandin...re convenient approach to monitoring the speed and sand flux of migrating dunes. By using pairs of high-re...

To improve forecasting earthquakes, NJIT mathematician studies grains

... Kondic will study how the physical properties of granular materials, like sand or salt, can lead to jamming, large force fluctuations and ultimately how.... Silos can collapse due to non-uniform pressures on their walls. Salt, sand or coal often jams when flowing out of hoppers. But why they behave like th...

Dune and dirty: Hurricane teaches lessons through ecosystem research

...ntist with Texas AgriLife Research. "The plants on sand dunes and in marshes build an island's elevation, ...ricane rolls over a barrier island: beaches erode, sand dunes "blow out," houses and buildings are damaged...ent deposits from all the above. "With beaches, sand from the beach is washed out into the sea, and it ...

Superglue from the sea

...rf, building sturdy tube-shaped homes from bits of sand and shell and their own natural glue. University o...ds. Building a Sandcastle Colony 'One Grain of sand at a Time' Stewart conducted the study with H...r. But they build tubes several inches long, using sand grains and shell fragments. "They will not lea...

The physics of star-forming clouds and the urban environment

.../meetings.aps.org/Meeting/DFD08/Event/90840 . sand DUNE MOTION "Particle image velocimetry on the ...ls the flux of creeping sand, while measurement of sand grains flying through the air quantifies the key mechanism that moves sand by wind: saltation..." http://meetings.aps.org/...

Jupiter's shrinking red spot

...elopment 8) Unlocking the Mystery of Martian sand Ripples 1) JUPITER'S GREAT RED SPOT IS SHRINKI.../89766 . 8) UNLOCKING THE MYSTERY OF MARTIAN sand RIPPLES When the Mars Exploration Rover Opportunity landed on fresh Martian sand ripples in 2004, its on-board microscope showed th...

Animal and biological science highlights: San Antonio Fluid Dynamics Conference, Nov. 23-25

...ng itself UP with its foot before it digs down," Hosoi says, "the clam clears a space around the leading edge of the shell. Given the extra space, the sand at the leading edge of the shell can unpack." This "fluidizes" the normally solid seafloor in a small region surrounding their shells, so that it flow...

AGU journal highlights: Nov. 11, 2008

...namics, has been suggested as a self-organizing mechanism for many phenomena, including atmospheric and mantle convection and the self-organization of sand grains by loading in sandpiles. Noting that natural seismicity in the Earth's crust is produced by stationary loading from plate tectonics, Main and N...

UD researchers show that plants can accumulate nanoparticles in tissues

...sponses to nanosized particles. Additionally, while the pumpkins were studied primarily in aqueous media, the researchers also tested the plants in sand to which nanoparticles were added, where there was little uptake, and in soil, where there was no uptake of nanoparticles at all, according to Jin. ...

State fund advances titanium powder research, 9 other Iowa State projects

...of Ames to develop a continuous process that uses high temperatures and a combination of catalysts to convert waste plastics, crude oil sludge and tar sand into diesel fuel and other useful products. $125,550 to Jesse Goff, a professor of biomedical sciences in the College of Veterinary Medicine. Goff...

'A dinosaur dance floor'

...hen the U.S. Southwest was covered with a field of sand dunes larger than the Sahara Desert. Located w... larger track sites, such as the one at Coral Pink sand Dunes State Park in Utah. The dinosaur tracks ...t an area much like the Sahara Desert with blowing sand dunes," Seiler says. "Areas between these...

So-called 'sandfish' could help materials handling and process technology specialists

... It moves as quickly in sand as a fish moves through water, which is why this l...t spends most of its time below the surface of the sand and moves through its element extremely efficientl...andling of granular materials.Whether it's gravel, sand or flour, optimising the technology for handling s...

Moderate quantities of dirt make more rain

...es at which long-lived clouds form. Background Aerosols are created in natural and human processes. Aerosol particles can consist of sea salt, sand grains, soot particles, sulfates and other materials of organic and inorganic origin. The natural processes include volcanic eruptions, the occasional...

Heavy metal link to mutations, low growth and fertility among crustaceans in Sydney Harbor tributary

...zones, although little is known about its genetic history. A native to the south-eastern coast of Australia, the amphipod feeds on organic material in sand and sediment. "These crustaceans are sensitive to heavy metals such as copper, cadmium and zinc and scientists use them as a 'test organisms' for ...

ESA to feature wide range of UW-Madison presentations

...on Wisconsin's Bayfield Peninsula have struggled for decades, mainly due to springtime floods of snowmelt that blanket their gravel spawning beds with sand and clay. Logging and denuded stream banks are often to blame when streams experience intense runoff. Yet, after being heavily logged in the late 1800...

UCSB researcher leads worldwide study on marine fossil diversity

... their work in 1998, coauthored the report. Alroy's report shows a new curve in the diversity of ancient marine invertebrate species such as clams, sand dollars and lobsters, while also revealing that most of the early propagation of invertebrates took place before the Late Cretaceous period. In additi...

Ancient marine invertebrate diversity less explosive than thought

... Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, according to an international team of r...

Species have come and gone at different rates than previously believed

... Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, according to an international team of r...

Unheard of life history for a vertebrate

...in body size for males to reach adulthood. After reaching maturity, the population reproduces, and females burrow through about 138 mm (5.4 inches) of sand to lay their eggs. Once covered, the eggs wait out the dry season for the next 8 to 9 months, and all adults die. "It is amazing to think that for ...

Life on the edge: To disperse, or become extinct?

...ate student Emily Darling and PhD student Karen Samis, Dr. Eckert studied the geographic distribution and dispersal biology of Abronia umbellata (pink sand verbena), a flowering plant endemic to the Pacific coastal dunes of North America. By surveying plants throughout the 2000-km geographic range, and me...

July 2008 GEOLOGY and GSA Today media highlights

...s, between about 450 and 420 million years ago, on the edge of an ocean known as Iapetus. Waldron et al. used isotopic dating to determine the ages of sand grains within the sandstones, so as to provide evidence for the sources of sediment in the adjoining continents. This method uses laser ablation to re...

UNH researchers test sediment-scrubbing technology in NH river

...th several feet of sand. But dredging is expensive, disrupts habitats and poses the problem of how to move and where to put all that toxic sediment. sand caps have questionable long-term effectiveness and can hinder boat traffic and impact aquatic life. "There's no silver bullet. What we are exploring i...
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