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Science News Archive December 2009


Page 6 of 21

Within a cell, actin keeps things moving

Actin's behavior has been studied using inhibitory agents and hormones to induce a state of fluctuation in yeast cells. The findings suggest that mitochondria recruit actin-related proteins to assemble into extended fractal-like structures, coordinating movement and supporting the idea that intracellular transport is achieved through a...

Karlsruhe Institute of Technology: Energy research for Europe

The Karlsruhe Institute of Technology has won a contract for a European knowledge and innovation community, focusing on sustainable energy systems. The consortium plans to develop a climate-neutral energy supply by 2050 and create 65 energy patents and 90 new products in the field.

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.

Are patients losing sleep over blood pressure monitors?

A study found that patients with kidney disease experienced disrupted sleep when using a widely used blood pressure monitor, leading to inaccurate results. The ambulatory blood pressure monitoring test, which measures blood pressure during sleep, can interfere with sleep patterns, causing an increase in nighttime blood pressure.

Media availability: Genetic variant may control lung function and risk of COPD

Researchers discovered a genetic variant associated with preserved lung function in children with asthma and adults who smoke. The study found a significant reduction in the risk of developing chronic obstructive pulmonary disease (COPD) in adult smokers with this variant, offering new insights into the mechanisms of COPD.

Color my numbers

A study published in Cortex found that synaesthetes can exhibit automatic color experiences when presented with numbers or patterns, regardless of their conscious awareness. The research suggests that learning may contribute to the development of these associations.

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.

Colliding auroras produce an explosion of light

A network of cameras deployed around the Arctic captured vast curtains of aurora borealis colliding, producing explosive outbursts of light. Researchers believe these collisions reveal a common sequence of events connected to events in Earth's plasma tail.

Researchers design a tool to induce controlled suicide in human cells

Researchers at IRB Barcelona have developed a new tool to induce controlled mutations in human cells, allowing them to study rescue signalling pathways and cell suicide. The tool helps understand the cellular response to accumulated errors in proteins, which can lead to neurodegenerative diseases.

UGA study: Headwater stream nutrient enrichment disrupts food web

Researchers found that nutrient enrichment caused a steady increase in organisms lower on the food chain but had no effect on predators like salamanders and macroinvertebrates. The study suggests that maintaining patterns of energy flow between predators and prey is critical for healthy ecosystems.

About 25 percent of Arabs in Greater Detroit reported abuse post Sept. 11

A new study found that 25% of Arab Americans in Greater Detroit experienced abuse due to race or religion since 9/11, leading to increased psychological distress and poorer perceptions of health. The study highlights the need for partnerships with community organizations to encourage mental health services among this population.

Apple iPhone 17 Pro

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

Invasion without a stir

Scientists discovered that membrane ruffles are not essential for Salmonella to penetrate host cell membranes. A new factor called WASH promotes bacterial invasion by contributing to cytoskeletal filament formation.

Scientists discover natural flu-fighting protein in human cells

Researchers found a family of naturally occurring antiviral agents in human cells that protected against most virus particles, including influenza A strains and West Nile virus. The proteins, called IFITM, worked by preventing the virus from attaching to cells, offering potential new ways to prevent and treat viral infections.

Meta Quest 3 512GB

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

Heme channel found

Researchers at Washington University have discovered a channel protein that shields and transports the crucial heme molecule across cell membranes. The channel, found in plants and bacteria, helps protect heme from oxidative damage as it makes its journey outside the cell.

Study identifies those elderly most at risk for major depression

Researchers pinpointed prime factors identifying elderly persons at high risk for developing major depression, including low-level depressive symptoms and poor social support. Preventive treatments hold promise for providing the greatest health benefit at the lowest cost.

6 PNNL scientists elected AAAS fellows

PNNL scientists Scott Chambers, Yuehe Lin, Moe Khaleel, Philip Rasch, John Wacker, and Sotiris Xantheas recognized for their groundbreaking research in semiconductors, nanotechnology, computational engineering, climate modeling, nuclear signature analysis, and aqueous systems.

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.

Sex in university may be better for mature audiences: study

Researchers found that emotionally mature students experience positive benefits from sex, while immature students face negative emotions. The study highlights the importance of considering individual readiness and motivations before engaging in sexual activity.

UAB researchers link calorie intake to cell lifespan, cancer development

Researchers at UAB have discovered that restricting glucose consumption can extend the life of healthy human-lung cells and speed the death of precancerous cells. The study found that calorie reduction aids the body's natural ability to kill off cancer-forming cells through epigenetic control of telomerase and p16 expression.

Breathlessness eased in patients with rare, often fatal disease

Patients with a rare, deadly disease experienced significant reduction in breathlessness using treprostinil, shifting from Class III to Class II NYHA functional class. The treatment improved walking distance and reduced Borg scores, offering substantial improvement in daily capabilities.

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.

Negative emotions outweigh intent to exercise at health clubs

A study found that negative emotions associated with exercise in health clubs are stronger for overweight individuals than intellectual facts, controlling their regular exercise. Exercise professionals can help by minimizing intimidation and promoting the benefits of exercise to personal health and wellbeing.

Scientists use light to map neurons' effects on one another

Researchers at Harvard University developed an all-optical technique to measure how neurons excite or inhibit each other. The study successfully mapped the interplay of four neurons, revealing that multiple neurons can influence their neighbors' activity.

Antidepressants cut risk of hospital readmission for suicidal youth

A new study found that antidepressant medication during inpatient treatment can significantly reduce the risk of hospital readmission among suicidal adolescents. The research also highlights concerns over the use of multiple medications in this population, which was associated with a three-fold increased risk of readmission.

An unusual case of variant CJD

A 30-year-old man died of variant Creutzfeldt-Jakob disease (vCJD) with a unique genetic profile, highlighting potential cases with long incubation periods. His heterozygous PRNP gene may indicate silently infected individuals, posing concerns for public health.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Pores finding reveals targets for cancer and degenerative disease

Researchers have identified a crucial step in apoptosis, a process that removes unwanted cells to prevent cancer development. Understanding the role of proteins Bak and Bax could lead to the development of drugs regulating cell death, with potential applications in treating cancer and degenerative disorders.

Marine scientists discover deepest undersea erupting volcano

Researchers have discovered the deepest undersea erupting volcano, West Mata Volcano, located nearly 4,000 feet below the surface of the Pacific Ocean. The eruption has produced unique boninite lavas and acidic water conditions, providing a rare opportunity to study magma formation and oceanic cycles.

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.

Predicting insurgent attacks with a mathematical model

The study analyzed 54,679 violent events in various countries and found a common statistical distribution for insurgency attacks, which is significantly different from traditional wars. The model can be used to create scenarios, make predictions, and assess risks for present and future insurgent wars.

Kidney injury in hospital increases long-term risk of death

A study published in Journal of the American Society of Nephrology found that patients with acute kidney injury (AKI) who did not require dialysis had a significantly higher risk of death over two years compared to those without AKI. The risk was even higher for patients with more severe AKI and returned to normal after discharge.

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.

Umbilical cord could be new source of plentiful stem cells, say Pitt researchers

Researchers at the University of Pittsburgh School of Medicine have found that umbilical cord tissue contains a plentiful supply of stem cells that could be used to treat various muscle and bone disorders. The study reveals that these cells can be easily harvested from the tissue, expanded in number, and are remarkably stable.

UR study reveals chemo's toxicity to brain, possible treatment

Researchers developed an animal model showing four commonly used chemotherapy drugs disrupt new brain cell birth and that IGF-1 may partially reverse the condition. The study is relevant to cancer survivors experiencing cognitive decline after chemotherapy.

Exploring the Stone Age pantry

Researchers have discovered that early Homo sapiens consumed wild sorghum and other pre-domesticated cereals around 100,000 years ago. This finding broadens our understanding of human evolution by showcasing the importance of dietary transformation through cereal consumption.

Astronomer receives NSF award to study black hole evolution

Kelly Holley-Bockelmann's NSF award will support her research on supermassive black holes and the university's innovative program for underrepresented minorities in physics. The grant also funds initiatives to recruit and retain students from underrepresented groups.

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.

Study shows loss of 15-42 percent of mammals in North America

Researchers analyzed mammal diversity data from 30 million years ago and 500 years ago, finding a significant loss of species following human arrival in North America. The study suggests humans are causing another mass extinction event, with potential conservation efforts able to stem the tide.

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.

Biophysical Society announces winners of 2010 Minority Travel Awards

The Biophysical Society has announced the winners of its Minority Travel Awards for 2010, recognizing minority students who will attend the society's Annual Meeting in San Francisco. Over 6,000 biophysicists are expected to attend the event, where more than 4,000 scientific abstracts have been submitted.

Zoning the ocean may help endangered whales to recover

A new method to identify priority areas for whale conservation has been proposed, suggesting that even small protected areas can benefit highly mobile marine predators like killer whales. The research highlights the importance of feeding behavior in conserving endangered southern resident killer whale populations.

Lung cancer and melanoma laid bare

Research teams analyzed cancer genomes, uncovering over 30,000 mutations in lung cancer and 33,000 in melanoma, which carried records of when and how they occurred. The studies revealed the impact of environmental mutagens, such as cigarette smoke and sunlight, on DNA.

Food aromas could become new weapon in battle of the bulge

Scientists have discovered that certain food aromas can contribute to feelings of fullness, potentially helping to combat obesity. By analyzing the effects of aroma release during chewing, researchers found that these scents can signal areas of the brain responsible for satiety, leading to reduced food intake.

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.

Caltech scientists film photons with electrons

Researchers at Caltech have developed a technique to image photons of nanoscale structures and visualize their architecture using 4D electron microscopy. The method allows for the observation of fleeting changes in the structure of nanoscale matter, enabling new insights into fields such as plasmonics and photonics.

New Web tool may help predict risk of second stroke

A new web-based tool calculates a person's risk of having another stroke within three months by analyzing medical history, brain scans, and other risk factors. The study found that over 96% of patients who developed a second stroke showed signs of one or more risk factor.

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.

Prayer on the hospital floor

A recent study by Brandeis and Rice University sociologists found that families frequently raise the topic of prayer when a child is seriously ill or dying. Pediatricians respond to these requests in different ways, including participating in prayers, accommodating them, reframing prayers for realism, or referring patients to religious...

Critical communication for caregivers

Researchers identify ineffective communication strategies that can worsen problem behaviors in family members with dementia. Effective communication, on the other hand, can resolve misunderstandings and reduce distress. The study aims to develop empirically derived communication interventions for caregivers targeting both problems.

Researchers discover novel method for detecting MIRCERA

Austrian researchers have developed a new electrophoretic method, SARCOSYL-PAGE, to detect MIRCERA and other erythropoietins (EPO) in the blood. The technique enhances sensitivity for MIRCERA while maintaining performance for detecting other EPOs.