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Science News Archive March 2007


Page 6 of 18

New devices offer patients safer, more effective therapies

Researchers present new catheter-based approaches to repairing the mitral valve and treating coronary plaque, showing improved safety and feasibility. The MONARC system and sideKick stenting system demonstrate significant benefits in patients with moderate-to-severe mitral regurgitation and bifurcation lesions.

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.

Noninvasive cardiac T-Wave test

A new noninvasive test may identify patients with stage II and III nonischemic cardiomyopathy who are likely to benefit from an ICD. The test, called abnormal T-Wave Alternans (TWA), shows that patients with a normal test have a very good prognosis and are unlikely to benefit from the device.

Apple iPhone 17 Pro

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

Brain fends off distractions

Research by Dutch social-psychologist Harm Veling demonstrates that our brains selectively remember useful information while suppressing distracting influences. However, this process requires mental energy and breaks down when individuals are fatigued.

DNA layer reduces risk of reserve parts being rejected

Dutch researchers have developed a DNA layer that improves attachment, recovery, and immune response to body implants. The coating, patented by Jeroen van den Beucken, approximates the body's natural material, reducing inflammation and immune responses.

Multiple malaria infection inhibits spread of parasite

Dutch researcher Mike van der Kolk discovered that people who are frequently infected with malaria parasites can develop immunity against the gametocyte, inhibiting the spread of the parasite. This natural immunity prevents the parasite from reproducing in mosquitoes, ultimately stopping its transmission.

Heart failure medication provides some symptom relief

A study found that tolvaptan improves symptoms such as congestion and breathing difficulty, but has no effect on long-term mortality or re-hospitalization rates. The medication also showed promise in reducing fluid accumulation and improving sodium levels in patients with hyponatremia.

iPods help docs improve stethoscope skills

A study at Temple University found that listening repeatedly to heart sounds on an iPod improved the stethoscope skills of general internists, increasing correct identification rates to 80%. This technique relies on intensive repetition and is essential for recognizing abnormal heart sounds and identifying dangerous conditions.

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.

Counseling by student-dentists helps patients quit smoking

Third- and fourth-year dental students at the University at Buffalo are using tobacco counseling to encourage patients to quit. After eight hours of training, they adhere to a modified version of the '5 As' protocol, showing a 51% success rate in getting patients to quit immediately. Over six months, 32% of patients remain smoke-free.

Bioabsorbable stent shows excellent performance

Researchers evaluated the safety and performance of a new bioabsorbable stent that eliminates several problems associated with metallic stents. At 30 days, device success was extremely high, and no patients experienced major adverse cardiac events or stent thrombosis.

Studies explore lifestyle choices and heart risks

Researchers investigate lifestyle choices and their impact on heart risks, exploring the effects of dark chocolate and nicotine patches on cardiovascular health. Studies find that flavonoids in dark chocolate can improve endothelial function in adults with BMI between 25-35 kg/m2.

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.

Low-dose aspirin beats high-dose after cardiac surgery

A new study attributes long-term survival rates after cardiac surgery to the rising use of cardiac drugs, including low-dose aspirin. Researchers found that lower doses of therapies may be just as beneficial while lowering side effects.

Studies examine issues in pediatric cardiology

Researchers examined long-term follow-up of stents placed in infants with congenital heart disease, finding sustained benefits and the ability to safely enlarge stents as children grow. Additionally, studies investigated percutaneous pulmonary valve implantation, analyzing its mid-term outcomes and impact on device removal.

Meta Quest 3 512GB

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

Novel platelet therapy may reduce PCI complications

A novel platelet therapy, SCH 530348, has demonstrated safety and efficacy in reducing percutaneous coronary intervention (PCI) complications. Major adverse events were reduced by 1.6-3.5% in low-dose cohorts compared to placebo. The treatment also showed a lower risk of death or major adverse events and heart attack compared to placebo.

Second-generation drug-eluting stent system challenges current gold standard

The SPIRIT-III trial shows that the Xience V Everolimus Eluting Coronary Stent System reduces target vessel failure, ischemic-driven revascularization procedures, and major adverse cardiac events compared to paclitaxel-eluting stents. This suggests a potential enhancement of outcomes for patients with coronary artery disease.

'Ancestral eve' was mother of all tooth decay

A NYUCD research team found that Streptoccocus mutans, a bacterium associated with dental caries, has evolved along with its human hosts in Africa between 100,000 and 200,000 years ago. This oral bacterial evidence supports the dispersal of modern Homo sapiens out of Africa to Asia.

Fluke 87V Industrial Digital Multimeter

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

Salamanders suffer delayed effects of common herbicide

A long-term study found that salamander exposure to atrazine had persistent effects on mortality rates, even after recovery. Survivors of the exposure suffered lower survival rates compared to those not exposed to atrazine.

Rode awarded prestigious SOM Engineering Fellowship

Kiley M. Rode, a senior at Stevens Institute of Technology, has been awarded the highly competitive SOM Engineering Fellowship to travel to Europe and study aesthetic structures. She is also working on a critical project for her senior design thesis, exploring the renovation of Frank Lloyd Wright's Guggenheim Museum of New York City.

Microfossils unravel climate history of tropical Africa

Scientists reconstructed land temperatures in tropical Africa over the past 25,000 years using a new method based on soil bacteria molecular fossils. The results show that tropical Africa was cooled more than the Atlantic Ocean during the last ice age, leading to drier conditions and a lush rainforest.

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.

Tissue engineering for craniofacial reconstruction

Biodegradable PolyHIPEs have been successfully used as tissue-engineering scaffolds for craniofacial reconstruction due to their rigid foam structure and ease of fabrication. This technique allows for the creation of interconnected pores, enabling efficient cell migration and tissue regeneration.

Scientists progress in successful tissue engineering

Researchers successfully engineered human cartilage using tissue engineering methods, demonstrating potential for therapeutic applications. The study also found that osteogenic protein-1 enhances cartilage production when added to chondrocytes on scaffolds.

Faulted modeling

Researchers factored in crustal strength changes to improve predictive models for earthquakes along the San Andreas Fault. The study found a disparity between observations and mechanical models, suggesting that crustal changes in fault segments should be included in future models.

Laying microscale tiles

A team of researchers led by Kyung Byung Yoon found that manually applying microcrystals to a substrate yields superior results compared to self-assembly methods. The manual process allows for denser packing and more regular orientation of microcrystals, making it preferable in the overlapping range of 0.5 to 3 µm.

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.

Study shows metabolic strategy of stressed cell

The St. Jude study found that cells shift their biochemical activities to conserve energy by increasing glucose production and recycling CoA, a key player in metabolism. The researchers also showed that PanK controls the concentration of CoA in specific locations within the cell.

New evidence puts 'Snowball Earth' theory out in the cold

Analyses of glacial sedimentary rocks in Oman have produced clear evidence of hot-cold cycles during the Cryogenian period, approximately 850-544 million years ago. These findings undermine hypotheses of an ice age so severe that Earth's oceans completely froze over.

Simulated populations used to probe gene mapping

A new study published in PLoS Genetics used computer simulations to trace genetic changes over thousands of generations in a simulated population, testing the effectiveness of statistical genetic methods in identifying multiple genes causing complex diseases. The researchers found that known methods are limited and identified which met...

Use of oral fluids to diagnose and treat disease

Researchers are conducting a study to analyze saliva and gingival crevicular fluid using proteomics to identify unique proteins in oral fluids. This analysis may lead to the discovery of new ways to diagnose and treat diseases such as HIV, hepatitis, and certain cancers.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

Chemists strike gold with new gold catalysts

Researchers have found a new class of gold catalysts that can act as both an acceptor and a donor of electrons in chemical reactions. This unique property allows gold to participate in reactions at carbon-carbon bonds, leading to the creation of novel organic molecules.

Scientists re-grow dental enamel from cultured cells

Researchers have developed a method to produce enamel-like tissue in culture, using epithelial cells extracted from developing teeth and seeded onto collagen scaffolds. This breakthrough could lead to the regeneration of whole teeth and treatment of damaged or missing enamel, revolutionizing dental care.

TV's beauty makeovers mask ugly truths

The Extreme Makeover show promotes a radical makeover program that enforces conformity to societal norms. The program sells the idea of cosmetic surgery as a means to uncover one's authentic self, but actually reinforces gender, age, class, and race standards.

Study describes action of estrogen in protecting bone

Researchers at the University at Buffalo have discovered that estradiol helps maintain bone density by stopping the activation of caspase-3, an enzyme involved in osteoblast apoptosis. This finding suggests that estrogens may prevent both bone loss and fractures through anti-apoptotic effects on bone cells.

Making mice with enhanced color vision

Researchers created mice with both human and mouse visual receptors, allowing them to distinguish between previously indistinguishable colors. This breakthrough suggests the brain can adapt to new sensory information quickly, challenging the idea that early primates developed trichromatic vision gradually over time.

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.

Genetic studies endow mice with new color vision

Researchers successfully engineered mice to see colors beyond the normal range by introducing a single human gene that codes for a light sensor. This breakthrough demonstrates the flexibility of the mammalian brain in processing sensory information, opening new avenues for understanding the evolution of color vision.

Tiny clue reveals new path toward heart disease

A new gene, kalirin, has been discovered that may contribute to the development of cardiovascular disease. The research suggests a biological mechanism never before linked to the disease and could lead to novel ways to treat or prevent it.

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.

Phone-based therapy eases depression long term

A new study by Group Health researchers found that phone-based therapy can lead to long-term positive effects on depression symptoms. Patients who received telephone psychotherapy soon after starting antidepressant medication showed strong positive effects at 18 months, with 77 percent reporting improved depression symptoms.

Viral enzyme recruited in fight against ear infection

A new nasal spray treatment using a virus enzyme shows promise in preventing acute otitis media and secondary pneumonia in mice infected with Streptococcus pneumoniae. The treatment uses lysine to eliminate bacteria from the ear, reducing the risk of middle ear infection.

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.

Health insurance fails to protect Americans from financial risk

A recent report by Brandeis University reveals that health insurance fails to provide financial protection for millions of Americans, leading to widespread debt and access problems. The study highlights the need for clearer rules and standards of accountability for health insurers.

The root of dyscalculia found

Researchers at UCL induce dyscalculia in normal subjects using TMS, finding a causal link between right parietal lobe malfunction and the math learning disorder. This breakthrough study has implications for diagnosis and treatment, potentially leading to earlier interventions and more effective remedial teaching.

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.

Test finds manufactured nanoparticles don't harm soil ecology

Researchers at Purdue University found that adding manufactured fullerenes to soil had no adverse effects on microorganisms or soil function. The study's results provide baseline data for future research on the impact of various types and sizes of nanomaterials on the environment.