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Science News Archive 2009


Page 144 of 277

ATS, ERS jointly issue asthma assessment guidelines

The American Thoracic Society and European Respiratory Society have released standardized definitions and measurement recommendations for assessing asthma control, severity, and exacerbations. The guidelines provide a framework for clinicians to diagnose and manage asthma, with a focus on improving patient outcomes.

Good males are bad fathers

A new study on seed beetles reveals that low genetic quality males are more successful in fertilizing eggs, contrary to predictions. Females' multiple mating does not guarantee the sperm of the highest genetic male.

Apple iPhone 17 Pro

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

Study challenges routine use of MRI scans to evaluate breast cancer

A study of 577 breast cancer patients found that routine use of MRI scans was associated with delays in starting treatment and increased mastectomy rates. The study suggests that more research is needed to determine the benefits of MRI scans in evaluating breast cancer, as their disadvantages may outweigh any potential advantages.

Remembering what to remember and what to forget

A UCLA psychologist's study reveals that people with very mild Alzheimer's disease have trouble focusing on what's most important. They recall an average of just 2.8 words out of 12, with a reduced ability to be selective in recalling high-value words.

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.

Experts: Big Tobacco dead by 2047, possibly sooner

According to experts, a nationwide effort can accelerate the decline of tobacco use in the next 50 years. Researchers analyzed data from the 1960s to the present and found that smoking rates have declined steadily, dropping from 42% to 20% over six decades.

Childhood physical abuse linked to cancer

A new study found childhood physical abuse is associated with a 49% higher risk of developing cancer in adulthood. The research also identified potential psychophysiological factors that could explain the link between childhood abuse and cancer.

Selenium intake may worsen prostate cancer in some, study reports

A study by Dana-Farber Cancer Institute found that higher selenium levels can worsen prostate cancer outcomes for men carrying a specific SOD2 gene variant. Men with the highest selenium levels and this variant had a 40% lower risk of aggressive disease, while those with the lowest levels were twice as likely to develop it.

Superfood soy linked to reduction in smoker's lung damage risk

A study found that high soy intake was associated with improved lung function and a lower risk of developing chronic obstructive pulmonary disease (COPD) in smokers. Flavonoids in soy may help protect against tobacco carcinogens, but more research is needed to understand the underlying mechanism.

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.

Your arteries on Wonder Bread

A new study from Tel Aviv University shows that high glycemic index foods, such as cornflakes and white bread, can cause sudden expansion of artery walls, leading to reduced elasticity and increased heart disease risk. The research provides a new mechanism for understanding how these foods affect the progression of heart disease.

New nanoparticles could revolutionize therapeutic drug discovery

Scientists have developed a novel protein stabilisation technique using nanoparticles, enabling detailed analysis of previously inaccessible membrane proteins. This breakthrough could lead to more effective drugs and open up exciting possibilities in therapeutic drug discovery.

SRNL to study applicability of solar cell coatings

Researchers at SRNL are investigating nanostructured coatings to enhance the efficiency of solar cells by reducing reflection. These coatings have shown promise in mimicking nature's ability to absorb light, with potential applications in commercial, home-based, and space-based solar cells.

High carbon dioxide levels cause abnormally large fish ear bones

Researchers at Scripps Institution of Oceanography found that high CO2 levels in water lead to abnormally large ear bones in fish, a vital structure for sensing orientation and acceleration. The study suggests potential implications for the survival and behavior of affected fish.

New gene discovery links obesity to the brain

A new gene variant linked to increased risk of obesity has been discovered, affecting the central nervous system and leading to a 10-15% higher likelihood of being obese. The study examined data from eight studies involving genes and body weight, analyzing over two million genome regions.

Meta Quest 3 512GB

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

Research: Improving treatment of patients with heart attack

A new study by Dr. Thao Huynh analyzes the best way to treat patients with heart attacks, suggesting that reducing delays in providing primary PCI can maximize its effectiveness. The study also highlights the importance of optimal medical therapy after discharge to prevent repeat heart attacks.

Vitamin A derivative provides clues to better breast cancer drugs

Researchers from the University of Chicago discovered a 'yin-yang' effect between estrogen and retinoic acid on gene expression in breast cancer cells. This balanced control can lead to new ways of preventing and treating breast cancer, including more precise diagnoses and novel anti-cancer drugs.

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.

Computers aid in cracking deception in plants

Researchers, led by MU computer scientist Dmitry Korkin, are using machine learning and pattern recognition to identify protein binding sites in plants that match those of pathogens. This work may help improve soybean cultivars for disease resistance by accelerating discovery of resistance to the soybean cyst nematode.

What should a teenage girl do if she finds a lump in her breast?

A recent study published in the American Journal of Roentgenology suggests that breast ultrasound examinations can eliminate the need for excisional biopsies in many cases. The study found that 15 out of 21 lumps were benign and did not require biopsy, highlighting the potential benefit of using ultrasound as a diagnostic tool.

Streaming sand grains help define essence of a liquid

Physicists at the University of Chicago have measured nanoscale forces causing droplet formation in a falling stream of tiny glass beads. The resulting 'granular liquid' exhibits surface tension 100,000 times smaller than that found in ordinary liquids.

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.

UCSF commentators call for health reform to revitalize primary care

Researchers at UCSF advocate for a nationwide Primary Care Cooperative Extension Service to support primary care clinicians and address the shortage of physicians. The service would provide infrastructure for practice transformation through local learning communities, information exchange, and cross-fertilization of ideas among practices.

Simple measures may prevent transmission of stomach ulcer bacteria

Researchers found that Helicobacter pylori is not transmitted through drinking water but rather through vomit and faeces, suggesting simple isolation and hygiene measures can prevent its spread. The study suggests isolating vomiting patients, especially children, for a short period can help prevent the bacterium's transmission.

Human term placenta a new abundant source of hematopoietic cells

Researchers have found a way to obtain large numbers of hematopoietic stem cells from human term placentas, which is an order of magnitude larger than those obtained from cord blood. The findings demonstrate that human term placentas are a high-capacity source of live and functional hematopoietic stem cells.

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.

Mantle Cell Lymphoma Consortium Scientific Workshop

The Sixth Annual Mantle Cell Lymphoma Consortium Scientific Workshop brought together experts to discuss key issues in MCL research, including biomarkers, chemoimmunotherapy, and novel therapeutic strategies. The report highlights the progress made in understanding this rare disease and its treatment options.

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.

Evolution of a contraceptive for sea lamprey

A team at UC San Diego School of Medicine may lead to a contraceptive for female sea lampreys, a jawless fish considered an invasive pest species in the Great Lakes. The researchers' findings suggest that compounds could bind specifically to the lamprey estrogen receptor, potentially acting as contraceptives.

Study finds DNA barcoding requires caution without closer examination

A recent study by Dr. David Spooner highlights the limitations of DNA barcoding in distinguishing species within complex plant groups, such as wild potatoes (Solanum section Petota). The technique's accuracy is compromised due to intraspecific variation and hybridization among species.

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.

Large-scale analysis finds bariatric surgery relatively safe

A large-scale analysis of nearly 60,000 patients found bariatric surgery to be relatively safe with complication rates around 10% and a total mortality rate under 1%. The study's findings indicate improved safety measures in modern weight-loss surgery.

University of Oklahoma researchers discover giant Rydberg atom molecules

Giant Rydberg molecules are formed by two interacting atoms due to fluctuations in electron orbitals, allowing for electric field manipulation and control over molecular properties. The discovery brings researchers closer to developing new quantum devices that combine isolated atomic systems with advances in microelectronics.

Climbing the ladder to longevity: Critical enzyme pair identified

Scientists at the Salk Institute have identified a pivotal role for two enzymes, WWP-1 and UBC-18, in regulating lifespan in response to diet restriction. The study found that overexpressing WWP-1 extends lifespan in worms, while depleting UBC-18 negates the effects of caloric restriction.

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.

Neurological differences support dyslexia subtypes

Researchers used MRI to compare brains of 38 people with dyslexia to a typical brain model, revealing differences in the right cerebellar declive and lentiform nucleus associated with varying language performance. These findings suggest different neuro-cognitive pathologies underlying dyslexia subtypes.

Smoking more than 5 cigarettes a day provokes migraine attacks

A recent study published in The Journal of Headache and Pain found that smoking more than five cigarettes a day increases the frequency of migraine attacks. The research involved 361 medicine students who were aware of their migraine status and reported higher prevalence of smokers among those with migraines.

Lasers can lengthen quantum bit memory by 1,000 times

Researchers at the University of Michigan have discovered a method to prolong quantum bit memory by utilizing lasers. By exciting the quantum dot with a laser, scientists were able to block magnetic field interactions and stabilize the magnetic field, resulting in a significant increase in stable existence of the quantum bit.

Salty ocean in the depths of Enceladus

Researchers detect sodium salts in Enceladus plume, confirming presence of salty ocean beneath moon's surface. The concentration of sodium chloride is estimated to be similar to Earth's oceans, with a concentration of 0.1-0.3 moles per kilogram of water.

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.

How mitochondria get their membranes bent

A research team at Goethe University Frankfurt has identified two proteins, Fcj1 and Su e/g, that regulate the shape of mitochondria's inner membrane. The protein Fcj1 promotes negative curvature, while the Su e/g protein induces positive bending, leading to the formation of cristae junctions.

Study pinpoints novel cancer gene and biomarker

Researchers at Dana-Farber Cancer Institute discovered a cancer-causing gene, GOLPH3, which can spur cancer cell growth and is linked to effective treatment with rapamycin. The study also found that high levels of the protein may serve as a biomarker for tumors responding well to this chemotherapy drug.

Fluke 87V Industrial Digital Multimeter

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

Wildlife faces cancer threat

A recent study by the Wildlife Conservation Society finds that cancer is a major threat to wild animal populations, with certain species at risk of extinction due to contagious cancers and pollution. The study highlights the need for increased health monitoring and resource allocation to safeguard animals and humans.

Tips from the American Journal of Pathology

Scientists have made significant discoveries in the fight against muscular dystrophy, identifying a potential gene therapy approach to overexpress Galgt2 protein. In another breakthrough, researchers have identified a stromal marker for breast cancer progression, highlighting the importance of examining stroma PDGF receptor expression ...

New piece found in colorectal cancer puzzle

Researchers found increased mRNA levels of PN-1, a prostasin inhibitor, in colorectal tissue samples from patients with mild/moderate dysplasia and severe dysplasia before colorectal cancer. Elevated PN-1 levels coincide with the acquisition of malignant properties in colorectal tissue.

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.