Bluesky Facebook Reddit Email

Science News Archive 2007


Page 93 of 203

How to manipulate perceptual focus in advertisements

A new study demonstrates how visual arrangement of alternatives can increase the likelihood of a product being chosen. Grouping options with similar characteristics can emphasize dissimilar options and help them stand out.

GPs antibiotic prescribing practices are still contributing to resistance

General Practitioners (GPs) are still over-prescribing antibiotics for common infections like sore throats and sinusitis, hindering efforts to combat antibiotic resistance. The analysis of the world's largest primary care database found that prescriptions for these conditions rose to 80% despite guidance warnings.

Study finds 30-minute CPR classes just as effective as multihour courses

A 30-minute video-based training session is as effective as a three- to four-hour course in teaching laypersons basic life-saving techniques. At six months after training, those who took the shorter course performed CPR and used an AED just as well or better than those who took the traditional training.

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.

Polar expeditions -- Bad and good for the mind

People on polar expeditions often experience disturbed sleep, impaired cognitive ability, and interpersonal tension. However, many also report feelings of camaraderie, mutual support, and personal achievement, highlighting the complex impact of these extreme environments on mental health.

Obesity is 'socially contagious'

A study by Harvard and the University of California, San Diego found that obesity is socially contagious, spreading from person to person in a social network. The greatest effect was seen among friends, with a 171% increase in chances of becoming obese if a mutual friend becomes obese.

UCLA study links air pollution to clogged arteries

A new UCLA study finds that combining diesel exhaust particles with cholesterol fats leads to a dangerous synergy that causes blood vessel inflammation and cardiovascular disease. The researchers discovered that the interaction activates genes promoting cellular inflammation, accelerating the narrowing and blockage of blood vessels.

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.

Hand gestures dramatically improve learning

A study found that hand gestures significantly enhance learning, with 90% of students recalling algebraic concepts after three weeks. The method taps into the need to experience information through interacting with the environment, making it a free and effective teaching aid.

Obesity spreads through social networks

Researchers found that when an individual gains weight, their friends and siblings have a significantly increased risk of becoming obese. The closer two people are in a social network, the stronger the effect. Geographical distance appears to have no effect, suggesting that environmental factors play a smaller role.

Study finds contaminated water reaching Florida's offshore keys

A new University of Georgia study reveals that sewage-contaminated groundwater is contaminating coral reefs up to six miles offshore in the Upper Florida Keys. The study found common fecal indicator bacteria and human viruses in surface water, groundwater, and corals.

Enzyme discovery sheds light on vitamin D

Researchers at Queen's University have made a groundbreaking discovery about the breakdown of vitamin D, revealing that changing a single amino acid in the hydroxylase enzyme can alter its pathway. This finding has significant implications for the treatment of cancer and other diseases associated with vitamin D deficiency.

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.

Picky eating potentially perilous for bats

Researchers found that specialized diets of bat species may contribute to their extinction risk. Contrary to previous studies, dietary breadth was not related to geographic range size or wing structure.

Switchable adhesive

Scientists create a surface pair that sticks together in response to an environmental stimulus, allowing for reversible detachment. This discovery could lead to innovative applications in microfluidic systems, actuators, and pharmacological agents.

Novel approach for rapid identification and development of malaria vaccines

Researchers have developed a novel approach for rapid identification of malaria vaccine candidates using bioinformatics and peptide synthesis. This approach has been shown to effectively inhibit parasite growth in vitro with purified human antibodies, potentially reducing the time and cost associated with developing new vaccines.

Apple iPhone 17 Pro

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

Other highlights in the July 24 JNCI

A recent study found a significant decline in breast cancer incidence in 2003, coinciding with a drop in hormone therapy use. Breast density and sex hormone levels are also independent risk factors for breast cancer in postmenopausal women.

Seeing colors -- New study sheds light on sensory system quirk

Researchers used the Stroop task to test grapheme-color synesthetes, finding that opponent incongruent colors made it difficult for them to respond quickly. However, memories of objects associated with those same colors were not affected by color change. These findings suggest that synesthetic colors are perceived in a realistic way.

Apple AirPods Pro (2nd Generation, USB-C)

Apple AirPods Pro (2nd Generation, USB-C) provide clear calls and strong noise reduction for interviews, conferences, and noisy field environments.

University of Leeds strengthens China links in membrane and neurobiology

The University of Leeds is joining forces with leading Chinese scientists in membrane and neurobiology to enhance research outputs and international profiles. The partnership aims to collaborate on studies focusing on ion channels, membrane transporters, and the flow of membranes between cellular compartments.

Drug protects brain cells in Huntington's disease model, researchers find

Researchers at UT Southwestern Medical Center have found that a drug called tetrabenazine (TBZ) prevents death of brain cells in mice genetically engineered to mimic Huntington's disease. The study sheds light on the biochemical mechanisms involved in the disease and suggests new avenues of study for preventing brain-cell death.

Older is better -- Top-10 comparison of diabetes drugs give metformin top grade

A study by Johns Hopkins Medicine found that metformin, a widely used diabetes medication, offers distinct advantages over nine other medications in controlling blood sugar levels, weight gain, and bad cholesterol levels. The medication was also found to be less expensive than newer options, with annual treatment costs averaging $100.

Additional mammogram readers improve breast cancer detection

A study published in the Journal of the National Cancer Institute found that adding readings by non-physician technologists to standard mammograms read by two radiologists increased breast cancer detection rates by 6.8%. This improvement was achieved with a minimal increase in false positives.

Celestron NexStar 8SE Computerized Telescope

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

Success rates for prostate cancer depend on experience of surgeon

A study published in the Journal of the National Cancer Institute found that experienced surgeons perform more successful prostate cancer surgeries, with a steeper learning curve. As surgeons gain experience, patient outcomes improve, but beyond 250 operations, additional experience has little influence on cancer recurrence rates.

Top researchers criticize new meditation and health study

A growing number of researchers in the U.S. and abroad are critical of a government-funded report that found no correlation between meditation and improved health. The report's analytical strategy was deemed haphazard and ad hoc, and relevant studies were excluded from the findings.

Anger, depression much higher among jailed teen girls than boys

A study by UC Irvine found that girls in juvenile detention centers face unique psychological issues, including twice as much aggression as boys and high levels of alcohol and drug use. The researchers suggest that training staff to recognize these issues could help improve the situation.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

Researchers produce firsts with bursts of light

Scientists generate most energetic terahertz pulses ever produced, allowing for the observation of cross-phase modulation and opening up new possibilities for materials research and light source technologies. The breakthrough could lead to innovations in fields such as biological molecule imaging and homeland security.

How to structure a complex body plan

Researchers found that plastic morphometric characters are associated with branch level and fixed traits with colony level in Stylophora pistillata corals. This adaptive plasticity allows the formation of species-specific architecture through variable developmental routes.

Baltimore inner-city homes unsafe for young children, Hopkins study finds

A Johns Hopkins study found that many Baltimore inner-city homes lack essential safety devices, putting infants and toddlers at risk of fires, falls, and poisoning. The study highlights the need for improved home safety measures, including stair-blocking gates, fire detectors, and medication storage, to protect young children.

Use of pulmonary artery catheter decreases substantially in US

A nationwide study found that use of pulmonary artery catheters in US hospitals decreased by 65% between 1993 and 2004, likely due to evidence showing no reduction in mortality for critically ill patients. The decline was most prominent for heart attack diagnoses, with a 81% decrease.

Chandra catches 'piranha' black holes

A new study using Chandra finds that younger, more distant galaxy clusters contain far more actively growing supermassive black holes than older, nearby ones. This rapid growth allows these black holes to thrive and influence their host galaxies.

Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

My bad! Why we feel guilt in the first place

Researchers found that guilt initially drives withdrawal motivation but transforms into approach motivation when an opportunity for reparation presents itself. Participants who received negative feedback on racist responses showed increased guilt and approached anti-racist behaviors.

Is nutrient loading a smaller problem than we think?

Studies of coral reefs, rocky intertidal areas, and sea grass beds suggest that depletion of top-level consumers is a key driver of ecosystem changes. The authors' findings have major implications for coastal ecosystem management, as reducing nutrient levels may not restore habitats.

Scientists discover new way to study nanostructures

Researchers at Georgia Institute of Technology have discovered a phenomenon that allows measurement of mechanical motion in nanostructures using the AC Josephson effect. The technique enables the identification and characterization of structural and mechanical properties of nanoparticles, including those of biological interest.

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.

Outcome of prostate cancer surgery depends on the experience of the surgeon

A new study published in the Journal of the National Cancer Institute found that prostate cancer patients treated by experienced surgeons have a lower risk of recurrence five years after surgery. The study analyzed data from over 7,700 patients and found that surgeons with more experience had better outcomes, with nearly 70% fewer recu...

UC Irvine scientists unveil the 'face' of a new memory

Researchers have made a breakthrough in understanding memory by capturing the physical substrate of newly encoded memories. The study shows that synaptic connections change shape when rats learn to navigate a new environment, and this change is essential for stable memory formation.

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.

Breast cancer and hormone therapy -- A looking-glass mirror?

A new Kaiser Permanente study suggests a possible link between breast cancer incidence and postmenopausal hormone therapy (HT) use, but concludes that the association is complex and influenced by various factors, including mammography screening rates. Long-term HT may slightly increase breast cancer risk, particularly in younger women.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Faster-acting antidepressants closer to becoming a reality

A new study reveals that blocking NMDA receptors leads to an increase in AMPA activity, which is crucial for ketamine's rapid antidepressant effects. This finding suggests that targeting AMPA directly may lead to the development of faster-acting antidepressants with fewer side effects.

Effects of aging in stem cells

Aging hematopoietic stem cells decline in function due to increased inflammatory response and decreased chromatin remodeling, leading to epigenetic dysregulation. Despite this decline, overall blood production remains stable.

Improving TB treatment and more

Researchers found that adherence to TB treatment is influenced by structural factors such as poverty and gender discrimination, highlighting the need for tailored support systems. A separate study on ventilatory control reveals evidence of central plasticity in humans, providing insight into the complexities of human physiology.

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.

Exposure to smoking-cessation product ads helps smokers quit

A new study from Cornell University found that exposure to smoking-cessation product ads increases the likelihood of quitting, even without purchasing products. The study suggests that 'spillover effects' from advertising may play a significant role in this phenomenon.

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.

Laser sets records in power and energy efficiency

Researchers at Northwestern University have developed a new type of laser that can emit over 700 milli-Watts of continuous output power, a factor of two increase from competing technology. The Quantum Cascade Laser has a 10-18% wall-plug efficiency, making it suitable for widespread deployment and low-cost production.