Articles tagged with Sand
The new silicon-based LED research has the potential to replace all incandescent and compact fluorescent bulbs, offering dramatic energy and environmental benefits. The Purdue team's breakthrough allows for efficient production on low-cost metal-coated silicon wafers, reducing costs by up to 20 times.
Transistors made with new material SAND prove resistant to radiation, a crucial factor for long space missions. The devices could also enable new technologies like printable electronics and transparent displays.
Scientists discovered that fecal bacteria survive better in sand than seawater, with higher counts in dry sand above the intertidal zone. This finding has implications for beach managers, who may need to sample water further from shore to avoid complications of bacterial run-off.
Research found nanoparticles can adhere tightly to soil particles in salty water but flow easily with stabilizers like natural organic compounds. This affects municipal filtration systems' ability to retain nanoparticles, with up to 77% retained by sand and 8-49% by glass beads.
A recent study by Stanford scientists found that sand at beaches along the California coast contains fecal indicator bacteria, contradicting the common belief that they occur naturally. The researchers detected human-specific genetic markers in enterococci bacteria at a popular beach in Monterey, Calif.
Dutch researcher Joris van den Berg developed a mathematical model to predict sand wave movement, improving safety for shipping and offshore infrastructure. The model simplified equations, enabling quick predictions of interventions like dredging and potentially unlocking studies on sand waves and banks.
Researchers analyzed interaction between individual raindrops and soil particles, dispelling a 50-year-old misconception about how rain-splash transport works. The study provides a theoretical model for the transfer of momentum carried by raindrops to sand grains.
Researchers found that sand gazelles' livers and hearts decrease in mass during food and water restriction. The animals also store fats in their brains to secure brain metabolism during prolonged deprivation.
Researchers at Rutgers University duplicated Martian razorback shapes using statically charged sand grains on acrylic. Meanwhile, DNA molecules and carbon nanotubes can convert rotational motion to linear translation, potentially solving a crucial problem in micromachine parts.
Researchers find patterns of cracks and thin fins on Mars resembling those formed by damp sand in New Mexico. The discoveries suggest the presence of water on Mars beyond polar ice caps.
Researchers create a unique fluid-like state by combining air with granular materials, exhibiting unusual characteristics at room temperature. The team observed two stages in the jet's formation, highlighting the importance of air pressure in its development.
Researchers found that coastal bluffs and cliffs are a significant source of sand in Southern California beaches, accounting for half of the sand in the Oceanside Littoral Cell. The study uses laser-scanning technology to quantify bluff erosion with high accuracy, challenging conventional assumptions about beach sand supply.
Researchers found that shredded tire chips provide effective drainage for modern and abandoned landfills, preventing water pollution and reducing costs. The study's results suggest a cost-effective alternative to traditional sand or gravel drainage materials.
Researchers find evidence of massive submarine sand avalances that carried sediments into deep-water Gulf of Mexico, accumulating in bowl-shaped basins. The discovery will aid understanding of how deeply buried reservoirs are formed and how oil and gas can be drained from them.
A team of physicists at the University of Chicago has measured the forces exerted between granular particles as they transition from a jammed state to a flowing state. The study shows that granular systems have an 'effective temperature' similar to glass, allowing particles to rearrange and flow.
Researchers study the impact of hurricanes on coral reefs in South Florida, finding a temporary removal of invasive seaweed. However, experts caution that without addressing nutrient pollution and its root causes, reefs will remain vulnerable to similar problems.
The book provides detailed explanations of procedures used to manage and minimize environmental impacts of aggregate mining, processing, and transportation. It also highlights successful reclamation projects that convert mined areas into beneficial uses such as recreation areas and natural habitats.
A study of accidental sand burials reveals that respiratory asphyxia is a deadly hazard, especially for young children. Parents are urged to supervise their kids playing in the sand, while early extrication and airway management can significantly improve survival odds.
Researchers at UCL's Institute of Neurology found that memories are distributed across different brain regions, not just one area. This means that a single sense can reactivate a memory, rather than requiring all aspects to be recreated.
Fossilized ghost crabs, up to 110,000 years-old, have been found on area beaches in central Florida. The rare discovery suggests that beach erosion, possibly caused by the construction of Port Canaveral, has exposed fossils that were previously hidden by dunes.
Researchers created a unique model to study earthquake fault friction forces using angel hair pasta, glass beads, and sand. They found that initial conditions and particle dimensionality have a significant impact on friction, with smooth particles producing different results than irregular ones.
Researchers investigate how warmer waters impact the interaction between sand shrimp and juvenile winter flounder, finding that increased water temperature allows more sand shrimp to survive and prey on vulnerable young fish. The study aims to understand the effects of global warming on marine ecosystems.
Researchers from the University of Groningen have developed a method to measure damage in zircon and determine sand sediment ages. Zircon grains that have been exposed to sunlight for long periods produce more light when heated, allowing for accurate dating.
Scientists use microgravity to study soil behavior and simulate earthquake effects, aiming to improve foundation design and mitigate soil liquefaction. The experiment will analyze the strength and stiffness of sand under different conditions, shedding light on the physics behind soil movement.
Research reveals that Northwestern crows primarily monitor their surroundings for opportunities to steal food, rather than detecting predators. The birds use complex strategies to obtain food, including targeting invertebrates and smaller prey.
Researchers have found evidence of recent earthquakes in a deep-sea core, suggesting the Cascadia subduction zone was active as recently as 300 years ago. The discovery provides new insights into earthquake cycles and helps establish methods to trace the history of earth's active crust.
A massive sand delta, over 325 feet thick and nearly 22 miles wide, was found in ancient shorelines of South Florida. This discovery suggests a river system significantly larger than present-day Florida once flowed through the state.
A Duke study reveals that the pressures under poured sandpiles are highest at their peripheries due to unbalanced distributions of stresses. In contrast, showered sand piles concentrate stresses at their centers like medieval cathedrals' flying buttresses. This research has practical importance for structures prone to self-destruction.
A new University of Florida study finds that east coast beaches are increasing in size on average, while west coast beaches remain stable. The study attributes this trend to low wave energy in Florida, which allows sediment to replenish beaches over time.