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Science News Archive December 2002 - Page 5


Page 5 of 7

Coral layers good proxy for Atlantic climate cycles

Researchers have discovered that coral layers in the Atlantic Ocean hold a key to understanding the region's climate dynamics. By analyzing calcium carbonate skeletons, Dr. Lisa Greer and her team found a periodic pattern of oxygen isotope composition with peaks every 12-15 years, mirroring sea surface temperature data.

Cool running semiconductors

Researchers have developed thin layer silicon with improved lattice vibrational frequency, leading to a 30% increase in thermal conductivity. This breakthrough enables faster charging and more efficient heat conduction in digital semiconductor devices.

NYU scientists show the benefits of being flexible

Researchers at NYU's Courant Institute found that flexible structures exhibit a unique drag reduction phenomenon, where the drag force decreases with the velocity of the flow. The team discovered that this occurs due to the shape of the fiber's 'nose' and its self-similarity under different velocities.

SourceNew York University·JournalNature·DateDec 6, 2002

A global warming Catch-22?

Phytoplankton, especially diatoms with silicon, play a crucial role in removing carbon dioxide from the atmosphere. However, warmer ocean temperatures hinder this process, creating a global warming Catch-22.

SourceRutgers University·JournalScience·DateDec 6, 2002

Researchers study screening and treatment of new immigrants for latent stage of tuberculosis

Researchers studied the health and economic implications of screening and treating new immigrants from developing nations for latent tuberculosis infection. They found that implementing this practice could avoid up to nine thousand future active tuberculosis cases and save $60 to $90 million per year in healthcare costs.

SourceUniversity of Toronto·JournalNew England Journal of Medicine·DateDec 5, 2002

Comparisons of the new mouse genome sequence

The new mouse genome sequence comparison offers a consensus view of the mouse genome, helping researchers understand human genes and their role in diseases. The study's findings have significant implications for improving diagnostic tests and treatments for human diseases.

SourceBMC (BioMed Central)·JournalGenome Biology·DateDec 5, 2002

Signaling pathway in melanoma could provide target for diagnosis, prevention and treatment

A study by Emory University scientists identified the MAP kinase signaling pathway as a key player in early melanoma development. The researchers found that this pathway is abnormally activated in early melanomas, but not in precancerous moles. This finding has implications for diagnosis and treatment of melanoma.

SourceEmory University Health Sciences Center·JournalClinical Cancer Research·DateDec 5, 2002

Salk Institute and SUGEN scientists map 'human kinome'

The Salk Institute and SUGEN scientists have created a detailed catalog of the 518 protein kinase genes encoded by the human genome. This comprehensive mapping will enable the development of new drugs targeting kinases, offering an alternative to standard chemotherapy for specific types of cancer.

SourceSalk Institute·JournalScience·DateDec 5, 2002

Call for WHO elections to be more open and transparent

A joint campaign between The Lancet and the Rockefeller Foundation aims to highlight critical issues in WHO's Director-General election, including a pressing need for leadership, funding reform, and prioritizing global health equity. The campaign seeks responses from candidates on key questions and calls for public scrutiny and debate.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 5, 2002

Emory study finds most baby-boomers fall short of good health

A recent Emory University study reveals that the majority of baby-boomers fall short of good health, with 62.2% categorized as 'incompletely healthy'. The research emphasizes the need for healthcare providers to adopt a more holistic approach, focusing on disease prevention and health promotion rather than just treating illness.

SourceEmory University Health Sciences Center·JournalAmerican Journal of Health Promotion·DateDec 5, 2002

Revolutionary new theory for origins of life on Earth

Researchers suggest that life emerged from chemical reactions in deep ocean environments, challenging traditional views of cell evolution. The theory proposes that inorganic iron sulphide cells were the first to form and eventually gave rise to living cells.

SourceRoyal Society·JournalPhilosophical Transactions of the Royal Society of London·DateDec 4, 2002

Sound waves to chill ice cream in new freezer case concept

A team of researchers at Penn State has developed a compact chiller that uses sound waves to cool ice cream, achieving temperatures below freezing point with minimal energy consumption. The innovative system, powered by high-amplitude sound energy, has the potential to revolutionize the way we produce and consume refrigerated foods.

Eye on the skies

A partnership between Navy and National Severe Storms Laboratory aims to improve weather forecasting by integrating SPY-1 radar with existing Doppler technology. The new phased array radar can provide faster updates of weather features, allowing for more detailed scans and increased lead time before tornadoes strike.