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Science News for November 28, 2006


Street robbery is not just for the money

A new study funded by the Economic and Social Research Council found that UK street robbery is often driven by a desire for excitement, status, or self-defense. The research, conducted with 120 offenders, revealed that gratuitous violence used in street robbery is increasing and is linked to drug use and gang involvement.

SourceEconomic & Social Research Council·DateNov 28, 2006

Measuring plant diversity, predicting vulnerability to invasive species

Scientists assess native plant diversity to evaluate invasion vulnerability and protect native plants, innovative field methods presented in a new book by USGS ecologist Tom Stohlgren. The book provides revised sampling approaches for measuring plant diversity at multiple scales, helping natural resource managers make informed decisions

SourceU.S. Geological Survey·DateNov 28, 2006
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.

Committee review of stem-cell fraud finds editors followed all rules

An independent committee concluded that journal editors at Science went above and beyond existing procedures to verify fraudulent stem-cell research articles, but the committee found that the cachet of publishing in Science can be an incentive not to follow the rules. The committee proposed developing a procedure for identifying high-r...

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience·DateNov 28, 2006

Smoking changes brain chemistry

Researchers found that smoking cessation led to normalized brain metabolite concentrations, with decreased NAA levels in the anterior cingulate cortex correlating with smoking history. Choline and creatine levels were also affected, suggesting a link between smoking and neuronal dysfunction.

SourceRadiological Society of North America·DateNov 28, 2006

Technology helps predict outcome of pediatric heart surgery

Researchers develop a 3D model of a child's heart using MRI scans to simulate blood flow and optimize surgical procedures for complex congenital heart defects. The system aims to improve quality of life for children with single-ventricle hearts by reducing the need for multiple surgeries.

SourceGeorgia Institute of Technology·DateNov 28, 2006

MIT chemist studies how electrons behave

Van Voorhis is developing methods to simulate electron transfer and improve the efficiency of devices such as LEDs and optical displays. His research aims to create a larger portion of energy storage in artificial photosynthesis, potentially leading to more efficient solar energy storage.

SourceMassachusetts Institute of Technology·DateNov 28, 2006
Apple iPhone 17 Pro

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

Mode of seed dispersal greatly shapes placement of rainforest trees

The study found that different seed dispersal methods, such as gravity and wind, result in distinct patterns of tree clustering in tropical forests. Trees with ballistic dispersal tend to cluster tightly, while those with wind-dispersed seeds have surprisingly tight clusters due to the dense forest canopy.

SourceHarvard University·JournalPLOS Biology·DateNov 28, 2006

Stormy days ahead for coral reefs

A scientific team has developed the world's first engineering model to predict how coral reefs will be affected by intense storms. The model takes into account factors such as colony shape, sea-bed strength, and wave force to estimate the likelihood of coral damage.

SourceARC Centre of Excellence for Coral Reef Studies·JournalNature·DateNov 28, 2006
Davis Instruments Vantage Pro2 Weather Station

Davis Instruments Vantage Pro2 Weather Station offers research-grade local weather data for networked stations, campuses, and community observatories.

Why do black and Latino boys lag behind in math?

A new study finds that Black and Latino males struggle in math classes despite positive feedback, due to a tendency to ignore institutional cues. Meanwhile, female students of the same racial groups are more resilient and less affected by low grades.

SourceUniversity of Chicago Press Journals·JournalAmerican Journal of Education·DateNov 28, 2006

Brilliant growth without gold

Researchers at Max Planck Institute for Microstructure Physics developed single crystal silicon nanowires using an aluminium catalyst, reducing the size of microchips. The new process fulfils key criteria for industrial-scale production and could lead to improved semiconductor components.

SourceMax-Planck-Gesellschaft·JournalNature Nanotechnology·DateNov 28, 2006

Chronic back pain linked to changes in the brain

Researchers used diffusion tensor imaging to track water molecule movement in brains of chronic back pain patients and healthy controls. Chronic back pain was associated with more directed diffusion in pain-processing regions, suggesting complex brain organization and hyperactivity.

SourceRadiological Society of North America·DateNov 28, 2006

Health inequalities are a growing problem worldwide

A recent study by Yale University researchers highlights substantial global health inequalities influenced by economic, social, and health-sector variables. Countries with low income and high mortality rates have lower investment in human and physical resources, more health risks, and worse educational outcomes.

SourceYale University·JournalJournal of Epidemiology and Community Health·DateNov 28, 2006
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.

Mobile mammography brings screening to more Native American women

A new project delivers mobile digital mammography services to remote reservations, transmitting images via satellite for real-time interpretation. The initiative aims to improve breast cancer screening and care for rural American Indian women, who face high mortality rates.

SourceRadiological Society of North America·DateNov 28, 2006

Microcapsules like it hot and salty

Scientists have developed a theoretical model to predict the properties of microcapsules based on salt content and temperature, enabling precise control over their permeability. This allows for intelligent transport systems that can release active substances at specific locations in the body.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateNov 28, 2006

Noise-immune stethoscope helps medics hear vital signs in loud environments

Researchers developed an ultrasound-based stethoscope that can accurately read heart and lung sounds at high noise levels, revolutionizing medical auscultation for critically injured patients. The new device is expected to save lives by enabling doctors to diagnose conditions like collapsed lungs and asthma in noisy environments.

SourceAmerican Institute of Physics·DateNov 28, 2006

Researcher gives robotic surgery tools a sense of touch

Researchers at Johns Hopkins University are developing a system that adds haptic feedback to robotic surgery tools, allowing surgeons to feel the work of mechanical helpers. The team is experimenting with techniques such as force sensors and computer models to convey tactile sensations to operators.

SourceJohns Hopkins University·DateNov 28, 2006
DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Magnetic needles turn somersaults

Researchers at Max Planck Institute have found a way to easily reverse vortex cores, creating a digital bit that is extremely stable. This mechanism can be used for a new magnetic storage concept, where magnetic pulses can efficiently reverse the vortex core with no losses and quickly.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 28, 2006

Minimally invasive treatment helps infertile couples conceive

A new study reveals that embolization, a minimally invasive treatment for varicoceles, significantly improves sperm motility and count in infertile men. Six months after treatment, 26% of couples achieved a pregnancy, with high sperm motility before the procedure being the key predictor of success.

SourceRadiological Society of North America·DateNov 28, 2006
Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Professor Lu Yongxiang receives the Harnack Medal

Lu Yongxiang, a top-ranking Chinese scientist, has initiated new forms of cooperation with the Max Planck Society, enhancing their research friendship. He is credited with making the Chinese Academy of Sciences a popular international partner.

SourceMax-Planck-Gesellschaft·DateNov 28, 2006

Have yourself a merry 'nano' Christmas! Nanotechnology holiday gifts

Nanotechnology has become a significant part of consumer goods, with products like Nano-Tex treated fleece jackets and carbon nanotube-infused tennis rackets. The Project on Emerging Nanotechnologies has identified over 350 manufacturer-identified nanotechnology consumer products currently being sold.

SourceWoodrow Wilson International Center for Scholars/Science and Technology Innovation Program·DateNov 28, 2006

Evolution of typhoid bacteria

The study reveals that asymptomatic carriers played a crucial role in the evolution and global transmission of Typhi, leading to antibiotic resistance and hindering treatment efforts. The research also highlights the importance of healthy carriers in facilitating the spread of the bacteria.

SourceMax-Planck-Gesellschaft·JournalScience·DateNov 28, 2006

Painkillers may threaten power of vaccines

Research suggests that common painkillers like NSAIDs can reduce vaccine effectiveness by reducing antibody production. The study's findings have implications for people who take these medications regularly, particularly those with compromised immune systems.

SourceUniversity of Rochester Medical Center·JournalThe Journal of Immunology·DateNov 28, 2006
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.

A stunning new look at déjà vu

A University of Leeds study reports a groundbreaking case of déjà vu in a blind individual, challenging traditional theories. The research suggests that déjà experiences are caused by disrupted familiarity areas in the brain, contradicting optical pathway delay theory.

SourceUniversity of Leeds·JournalBrain and Cognition·DateNov 28, 2006

Night of the living enzyme

Researchers at PNNL discovered that entombed enzymes in silica nanochambers can regain their activity, mimicking cellular crowding. The team developed a method to functionalize the pores with compounds tailored to specific enzymes, allowing for potent catalysis and efficient production of desired products.

SourceDOE/Pacific Northwest National Laboratory·JournalNanotechnology·DateNov 28, 2006
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.

MRI shows brains respond better to name brands

A new study using fMRI found that strong brands elicit stronger activity in the brain, activating areas involved in positive emotional processing and self-identification. Weak brands, on the other hand, showed higher levels of activation in working memory and negative emotional response.

SourceRadiological Society of North America·DateNov 28, 2006

Violent video games leave teenagers emotionally aroused

A new study found that adolescents playing violent video games exhibited increased emotional arousal and decreased executive function compared to those playing nonviolent games. The researchers used fMRI scans to measure brain activity during tasks requiring concentration and emotional processing.

SourceRadiological Society of North America·DateNov 28, 2006

The pain from fibromyalgia is real, researchers say

Researchers at University of Michigan confirm fibromyalgia as a real condition characterized by lower pain threshold and associated with genetic factors. Studies using neuroimaging techniques reveal abnormalities in central brain structures and increased neural activity in patients.

SourceMichigan Medicine - University of Michigan·JournalCurrent Pain and Headache Reports·DateNov 28, 2006
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.