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Science News Archive December 2011


Page 9 of 23

Growstones ideal alternative to perlite, parboiled rice hulls

Growstones, an aggregate made from waste glass, has been shown to increase air-filled pore space in substrates more effectively than perlite and parboiled rice hulls. The study found that Growstones can be used as a substitute for these materials in greenhouse crop production, with improved water-holding capacity and bulk density.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Researchers explain what makes granular material become solid

A team of researchers explains how granular materials change from flowing to solid states through shearing, which can help engineers and manufacturers. They discovered that even without density changes, the discs exhibited a solid state due to the shape of the box changing.

Solving a supernova mystery

A team of scientists has observed the early stages of a Type Ia supernova, refining our understanding of these explosive events. The discovery suggests that the primary star was a carbon-oxygen white dwarf, and analysis of matter ejected by the explosion points to a possible subgiant or main-sequence star as the secondary companion.

Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Global health funding slows as deadline for Millennium Development Goals nears

New research from the Institute for Health Metrics and Evaluation finds that global health funding has slowed due to cutbacks in the US and shortfalls at the Global Fund, raising concerns about meeting the Millennium Development Goal deadline. Despite this, strong commitments to global health have been made by many countries.

Biochemical signature predicts progression to Alzheimer's disease

A study by VTT Technical Research Centre of Finland and University of Eastern Finland reveals a biochemical signature indicative of hypoxia and up-regulated pentose phosphate pathway that can predict progression to Alzheimer's disease. This indicator can be analyzed from serum samples months or years before first symptoms occur.

Controversy over Triceratops identity continues

Research led by John Scannella confirms that Triceratops is a single genus, resolving debate over the classification of Torosaurus and Nedoceratops. The study reveals that significant skeletal changes during development and natural variation within the genus cause specimens to exhibit varying features.

Removing sulfur from jet fuel cools climate

A Yale study found that removing sulfur from jet fuel has a small net cooling effect on the atmosphere. This is due to the formation of nitrate from nitrogen oxides in jet exhaust, which offsets the warming caused by sulfate particles formed by burning sulfur-laden fuel.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Dinosaurs with killer claws yield new theory about flight

New research from Montana State University reveals how dinosaurs like Velociraptor and Deinonychus used their famous killer claws to latch onto prey, proposing a new behavior model for the evolution of flight in birds. This study suggests that the enlarged sickle-claw on digit two was used as an anchor to prevent escape, and that preci...

A brain's failure to appreciate others may permit human atrocities

A new study by researchers at Duke University and Princeton University suggests that a person's brain can disengage from social interaction when encountering individuals considered 'disgusting', leading to 'dehumanized perception' and a lack of empathy. This failure can contribute to human atrocities, torture, and genocide.

Landscape architecture survey: Is plant knowledge passé?

A survey of landscape architects found that while many believe they have average plant materials knowledge, most agree that recent graduates lack expertise and the profession has distanced itself from plant knowledge over time. Experience remains a crucial skill for new graduates, according to seasoned professionals.

Mercury releases into the atmosphere from ancient to modern times

A new study reveals that humans have released 385,000 tons of mercury into the environment over the past 5,000 years, with emissions peaking in the late 1800s and rising again due to increased coal use. The research challenges the notion of declining mercury emissions.

Nikon Monarch 5 8x42 Binoculars

Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

A new genre of tires: Call 'em 'sweet' and 'green'

A new genre of eco-friendly tires is being developed using genetically engineered microbes that produce raw materials from sugar. Companies like Goodyear and Michelin are partnering with biotechnology firms to create sustainable alternatives to traditional petroleum-based tires, which could debut within the next 3-5 years.

Nikolaus Rajewsky of the MDC to receive the Leibniz Prize

Nikolaus Rajewsky, a Professor at the Max Delbrück Center for Molecular Medicine (MDC), will receive Germany's most prestigious research award, the Gottfried Wilhelm Leibniz Prize. His work on microRNAs and gene regulation has led to significant advances in understanding complex biological processes.

Worker ants paralyze and kill termites from afar

A study published in PLOS ONE found that worker ants can paralyze and kill termites without direct contact, thanks to their potent venom. The researchers discovered three functions of the ant venom: attracting nestmates, repelling alien ants, and killing termites.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

MIT research: A glow of recognition

Researchers at MIT have developed a system that visually signals the presence of target chemicals by emitting a fluorescent glow. The approach combines fluorescent molecules with metal-organic frameworks (MOFs) to provide easy visual identification of toxins or pathogens.

Brain and heart link may explain sudden death in Rett

Researchers found that heart problems in Rett syndrome originate from the loss of the Rett gene (MeCP2) in nerve cells, not heart muscle cells. Abnormalities in brain activity can lead to cardiac malfunctions and death.

Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Pregnant women advised to stay cool for baby's sake

A QUT study found a link between temperature increases and the incidence of stillbirth and shorter pregnancies. The study, which recorded 101,870 births over four years, estimated that increased temperatures increase the risk of stillbirth by 15°C, with the lowest risks seen in the coolest weeks.

Statins may reduce mortality in patients hospitalized with influenza

An observational study found that statin use was associated with a decreased risk of dying among hospitalized patients with laboratory-confirmed influenza. Researchers also noted the potential benefits of randomized controlled trials to further examine the effectiveness of statins for influenza treatment.

Society may get stuck with the bill for expensive higher education

A study by North American economists found that the cost of higher education is becoming increasingly inaccessible to low-income students, who are now facing significant barriers to accessing credit for college. This trend could have far-reaching economic impacts, as it restricts career choices and leads to less qualified workers in ke...

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C)

Anker Laptop Power Bank 25,000mAh (Triple 100W USB-C) keeps Macs, tablets, and meters powered during extended observing runs and remote surveys.

Follow your nose

A study published in Nature Communications reveals that modern humans have a more developed sense of smell compared to Neanderthals, with larger olfactory bulbs and temporal lobes. This could be linked to improved behavioral and social functions.

MIT research update: Sharpening the lines

A new technique developed by MIT researchers allows for the production of complex shapes on microchips, enabling further leaps in computational power. By combining interference patterns and photochromic materials, the technique can produce features one-eighth the size of traditional photolithography.

A gene that protects against colorectal cancers

Researchers discovered a gene that protects against colorectal cancer by causing cell death, but this mechanism is often blocked in human cancers. The gene, DCC, codes for a 'dependence receptor' that induces apoptosis when it's depleted of ligands.

NTU hosts race to design innovative 'green microchips'

Nanyang Technological University (NTU) hosted a chip design competition to encourage energy-efficient innovation. The winning team, from Institute of Microelectronics, developed an ultra-low-power wireless implantable blood flow sensing microsystem for vascular graft applications.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

New eco-friendly foliar spray provides natural anti-freeze

Researchers developed an all-natural foliar spray that enhances plants' innate 'anti-freeze' properties, reducing cold damage and mortality by up to 1 USDA hardiness zone. The non-toxic spray is friendly to both plants and the environment.

Erosion of traditional 'taboos' threatens Madagascar's lemurs

Recent research in Madagascar reveals that illegal hunting of protected species, including lemurs, is widespread due to increasing appetites for meat and declining traditional taboos. The study suggests that improving access to domestic meats and disease control methods can help reduce pressure on wild species.

Pythons and people take turns as predators and prey

In a study co-authored by Cornell University researcher Harry Greene, men are attacked by giant pythons but also target them for food, competing for the same local deer, wild pigs, and monkeys. The complex relationships between humans and snakes highlight broader patterns of predation and competition in the natural world.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

Elemental 'cookbook' guides efficient thermoelectric combinations

The Duke researchers have calculated the thermoelectric properties of over 2,500 compounds and provided detailed recipes for creating the most efficient combinations. This new database will allow scientists to stop using trial-and-error methods and instead use a rational basis to design thermoelectric devices.

Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Stress causes clogs in coffee and coal

Scientists at Duke University discovered that shear strain can cause particles like coffee beans and coal chunks to jam sooner than expected. This finding challenges previous theories and has implications for designing new composite materials and countermeasures against weapons of mass destruction.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Microbial contamination found in orange juice squeezed in bars and restaurants

A study by Spanish researchers found that 43% of fresh orange juice samples exceeded acceptable enterobacteriaceae levels, highlighting the need for proper handling and cleaning of oranges and juicer equipment. The study also revealed that storing juice in metal jugs led to unacceptable bacterial contamination levels.

Toward a therapy to healing stroke

Researchers at KIT biologists identified key factors controlling thalamus development, enabling potential tissue replacement therapy for stroke patients. They are now developing 2D cell culture systems and 3D cultivation projects to activate these factors in undifferentiated cells.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Magnetic stimulation of brain may help some stroke patients recover

A new study found that magnetic stimulation can improve visual-spatial abilities in people with hemispatial neglect, a common condition after a right-sided stroke. The treatment, which uses transcranial magnetic stimulation, also restored balance to the brain's circuits and improved cognitive and movement abilities.

'Tis the season to be wary of elder financial abuse

Research by Virginia Tech's Karen A. Roberto found that elderly women are nearly twice as likely to fall victim to financial abuse, while younger males between 30-59 commit most cases. Seniors can prevent financial abuse with awareness and precautions.

Closest Type Ia supernova in decades solves a cosmic mystery

Astronomers have observed the closest Type Ia supernova in decades, providing direct evidence for what a carbon-oxygen white dwarf looks like before it explodes. The study reveals that the supernova's progenitor was likely a binary system with a small white-dwarf star orbiting a companion.

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

A black hole's dinner is fast approaching

Astronomers have discovered a unique new object, a dusty ionized gas cloud, nearly doubling its speed in seven years and approaching the event horizon of the black hole. The cloud will break apart completely over the next few years due to external pressure and gravitational pull.

Cigarette and alcohol use at historic low among teens

Teenage cigarette and alcohol use has declined to its lowest point since the survey began in 1975, with 18.7% of 12th-graders reporting current cigarette use. However, alternate tobacco products, marijuana, and prescription drug abuse continue to be concerns, with high rates of abuse reported among teens.