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Science News Archive March 2009


Page 18 of 26

Texas-sized tract of single-celled clones

A Rice University study has confirmed a world-record colony of amoebae clones measuring at least 12 meters across in a Texas cattle pasture. The discovery provides insights into the evolution of cooperative behavior in microorganisms like Dictyostelium discoideum.

Climate change reduces nutritional value of algae

Research shows that higher CO2 concentrations in freshwater micro-algae lead to a reduction in their nutritional value, affecting the small animals that eat them. This can have detrimental effects on the entire underwater food chain, influencing ecosystems and potentially leading to changes in aquatic species distribution.

Apple iPhone 17 Pro

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

Oxford's Dr. Rosalind Rickaby receives 2009 Rosenstiel Award

Dr. Rosalind Rickaby, a biogeochemist at Oxford University, has been awarded the 2009 Rosenstiel Award for her groundbreaking research on marine phytoplankton and their impact on the Earth's climate. Her innovative approaches are helping to establish a record of the influences these microorganisms have had on the planet.

Study suggests blood test for Alzheimer's possible

A study by researchers at the University of Georgia found a direct relationship between two specific antibodies and the severity of Alzheimer's disease symptoms. The team detected higher levels of these antibodies in patients' blood samples, which could lead to an early diagnosis and potentially improve patient quality of life.

'Short-sleepers' may develop blood sugar abnormality that can lead to diabetes

Researchers found that participants who slept less than six hours a night were 4.56 times more likely to convert from normal blood sugar levels to impaired fasting glucose compared to those getting six to eight hours of sleep. This association suggests a link between inadequate sleep and the development of type 2 diabetes.

Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

NASA's Fermi telescope reveals best-ever view of the gamma-ray sky

The new map combines nearly three months of data from NASA's Fermi Gamma-ray Space Telescope, offering an unparalleled look at the high-energy cosmos. The image reveals flares from supermassive black holes in distant galaxies and pulsars, as well as a globular cluster in our own Milky Way galaxy.

Polarizers may enhance remote chemical detection

Researchers at the University of Illinois Chicago have developed a method to filter out interfering signals in LIBS, allowing for more accurate analysis of suspected bombs and other hazardous materials. By using polarizing filters, they improved sensitivity while reducing costs.

Long, sexy tails not a drag on male birds

Studies show that male hummingbirds with long tails experience only a minimal cost in speed or energy, with a 3.4% drop in maximum flight speed. The researchers argue that the benefits of attracting females outweigh the costs of having long tail feathers.

Consumers stop buying as number of options increase

A study published in Psychology & Marketing found that when people have too many similar options, they are more likely to leave a store without making a choice. The researchers suggest that this phenomenon, known as the 'choice overload effect,' can affect people's ability to decide in certain situations.

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.

New greenhouse gas identified

A new study identifies sulfuryl fluoride as a significant contributor to future greenhouse warming due to its long lifetime of 36 years. The gas is currently present in the atmosphere at very small quantities, but increasing emissions pose a risk.

NOAA: Atmospheric 'sunshade' could reduce solar power generation

A new NOAA study warns that injecting particles into the stratosphere could inadvertently decrease peak electricity generated by large solar power plants. This is due to the reduction of direct sunlight, which is crucial for these systems to function efficiently.

Crickets may predict human survivability during global warming

A study led by UCF scientist Wade Winterhalter uses cricket reproduction patterns to predict the impact of global warming on humans. The research combines global warming models with biological predictions, simulating daily and seasonal temperature changes in crickets over a six-degree Celsius increase.

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.

Enterprising school management leads to more effective schools

A recent study found that enterprising school management teams stimulate a development-focussed school culture, resulting in better school effectiveness. The study, conducted by Gerdy ten Bruggencate, analysed data from over 100 high schools in the Netherlands.

An end to fear

A team of Dutch researchers successfully reduced the fear response in human volunteers using beta-blocker propranolol. The treatment weakened fear memories, allowing them to be erased from long-term memory. This breakthrough has implications for treating anxiety disorders and offers a new approach to intervention.

Don't follow us, we're lost too

Panicos Demetriades, a renowned economist, argues that the current global financial crisis presents an opportunity for governments to take a more proactive role in finance. He suggests that countries should adopt policies that prioritize the public interest over the narrow interests of financial institutions. This could involve nationa...

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.

The perils of ageism

A new study published in Psychological Science suggests that young, healthy individuals who stereotype old people are at risk of heart disease years down the road. Researchers analyzed data from over 400 participants and found a striking link between negative age attitudes early in life and poor cardiovascular health later on.

NSF 'net-centric' research group links Texas universities, industry

A new NSF-funded research group will integrate technology from Southern Methodist University, two other North Texas universities, and 11 industry partners to create net-centric solutions. The consortium aims to improve research capabilities in the US by combining academic expertise with high-tech companies.

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.

New York State health IT strategy may be model for the nation

A study by Weill Cornell Medical College finds that New York state's health IT initiatives have achieved significant success, with 100% of programs remaining active and functioning after two years. The initiative has improved quality of care, increased efficiency, and reduced medical errors.

Research is essential in nursing education

Undergraduate nursing students can benefit from research instruction, which enhances their education and prepares them to investigate healthcare issues. Nurse researchers like Dr. Tingen build knowledge used to improve care quality and efficiency.

Reducing suicidal behaviors among adolescents

A recent study by Georgia State University researchers found that adolescent girls who perceive themselves as overweight are more likely to display suicidal behaviors than those who are actually overweight. The study analyzed data from 1999-2007 and estimated the potential economic costs of obesity-related suicides.

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.

Children's National research links platelets to sepsis-related organ failure

Scientists have identified platelets as a contributor to organ failure in patients with sepsis. The study found that granzyme B production in platelets can cause cell death, leading to organ failure. Researchers hope this discovery will lead to better treatments and potentially even prevention of organ failure.

Also in the March 10 JNCI

Daily folic acid supplements may increase prostate cancer risk by more than twice that of placebo. Baseline dietary folate intake and plasma levels showed a trend towards reduced risk but did not reach statistical significance. Researchers suggest large epidemiological studies using improved methods to study diet and cancer prevention.

Turning sunlight into liquid fuels

Researchers have created a nano-sized cobalt oxide photocatalyst that can effectively split water molecules, a critical step towards producing liquid fuels from carbon dioxide and water. The clusters are sufficiently efficient and fast, making them suitable for artificial photosynthesis.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

Indian schools to benefit from new computer chips

A new solar-powered electronic slate, or I-slate, will use Rice's revolutionary low-energy computer chips to enable learning in rural Indian classrooms. The chips' 'probabilistic' technology trades off precision for significant reductions in energy use.

Meta Quest 3 512GB

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

Barriers to adoption of electronic personal health records outlined

A study by UCSF researchers identifies critical barriers hindering the adoption of electronic personal health records, including cost, privacy concerns, and design shortcomings. The authors propose solutions such as improving interoperability and using mobile phones as an entry point for consumers to access their records.

Synthetic gene circuit allows precise dosing of gene expression

A new synthetic gene circuit allows for precise dosing of gene expression in yeast cells, enabling accurate analysis of a gene's role in normal and abnormal cellular function. The circuit utilizes negative feedback loops to achieve a linear dose-response relationship.

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.

Simple test helps predict heart attack risk

Researchers found that up to 45% of individuals without known heart disease had abnormal ankle brachial index values, indicating peripheral arterial disease. This could improve cardiovascular risk prediction and identify high-risk patients for intensive medical therapy.

Teenage stress has implications for adult health

A study by UCLA researchers found that teenage stress is associated with higher levels of inflammation, a potential indicator for cardiovascular disease. Daily interpersonal stress experienced during high school years was linked to elevated CRP levels even among healthy teens.

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.

An age-old story

A unique exhibition showcases video clips of younger and older people reflecting on life and growing old, revealing surprising experiences and challenges to common stereotypes. The event also invites the public to record their own digital stories on ageing, exploring the potential of technology in social sciences research.

Brain damage found in cognitively normal people with Alzheimer's marker

A study by Washington University School of Medicine found that individuals with lower levels of amyloid beta 42 in their cerebrospinal fluid had reduced whole brain volumes, suggesting early brain damage. The results suggest that Alzheimer's disease may harm the brain for years before symptoms appear.

Breath or urine analysis may detect cancer, diabetes

Researchers are developing a sensor that analyzes breath or urine samples for volatile markers indicating disease. These markers can be used as a non-invasive diagnostic tool for conditions like breast cancer, lung cancer, diabetes and asthma.

Fluke 87V Industrial Digital Multimeter

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

Oh baby, interventional radiology makes childbirth safer

Minimally invasive treatments using embolization effectively control life-threatening bleeding in women after C-sections, reducing the need for blood transfusions and hospital stays. Interventional radiology also helps women with invasive placenta by stopping excessive bleeding and potentially eliminating the need for a hysterectomy.

Inadequacy of current guidelines for sexually transmitted infections

A Brazilian study found that current guidelines for sexually transmitted infections are woefully inadequate, with only 32% of infected women correctly identified using the World Health Organization's risk assessment score. The researchers recommend rapid and less costly diagnostic tests to control the spread of STIs in adolescents.

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.

Pay it forward: UH prof helps advance science in developing countries

Carlos Ordonez, a UH professor, recruits up-and-coming scientists from Latin America for two-year fellowships at UH's top researchers. The program enhances scientific partnerships between the US and Latin America, empowering promising young scientists to tackle problems in their home countries.

Screening tests show promising results for the early detection of ovarian cancer

The largest randomised trial of ovarian cancer screening has shown that both the CA125 blood test and transvaginal ultrasound screening strategies are capable of detecting early stage ovarian cancers. The study detected almost half of all cancers in stage I/II, with a significant improvement in specificity for multimodal screening.

Brighten up! Paint study could save states millions

A North Carolina State University study reveals painted road markings outperform thermoplastics in reflecting headlights, helping states comply with federal safety standards and reduce painting costs. The research found that paint reflects more light when driven in the direction of application, saving states millions.