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Science News for December 5, 2001


Physicians screening more patients for prostate cancer

Fewer than half the physicians surveyed thought early detection would reduce mortality rates. Routine screening was often offered due to perceived standard of care or fear of malpractice lawsuits.

SourceCenter for Advancing Health·JournalJournal of General Internal Medicine·DateDec 5, 2001

Researchers discover how to control electron spin electrically

A six-person research team, led by physicist David Awschalom, demonstrates continuous electrical tunability of spin coherence in semiconductor nanostructures. This breakthrough enables the creation of spin gates that can manipulate electron spin direction and speed.

SourceUniversity of California, Santa Barbara - Engineering·JournalNature·DateDec 5, 2001

Fossil teeth reveal recent origin of human growth pattern

Researchers found that a modern human-like growth period in humans is a relatively recent evolutionary acquisition, arising around 120,000 years ago. The analysis of fossil teeth suggests that the prolonged growth and development seen in humans today is not as old as previously thought.

SourcePenn State·JournalNature·DateDec 5, 2001
Apple iPhone 17 Pro

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

Future looks bright for StarLight

The StarLight network provides high-speed connectivity for researchers worldwide, enabling real-time collaboration on complex projects. With speeds of up to 10 gigabits per second, StarLight supports cutting-edge applications such as virtual reality presentations and data mining.

SourceUniversity of Illinois Chicago·DateDec 5, 2001

Study finds brain's reward areas also activated by pain

Researchers found that brain structures associated with rewarding experiences are also activated by painful stimuli, leading to a better understanding of pain's emotional component. This study may lead to the development of new approaches to diagnosing and treating chronic pain.

SourceMassachusetts General Hospital·JournalNeuron·DateDec 5, 2001

Minority Medicaid recipients least likely to be on most effective AIDS drugs

A study found significant disparities in HIV/AIDS treatment among minority Medicaid recipients, with African Americans waiting longer to start life-saving treatments and Hispanics being less likely to stay on them. The researchers suggest that improved care strategies and supportive services are needed to address these disparities.

SourceCenter for Advancing Health·JournalJournal of General Internal Medicine·DateDec 5, 2001

Defective cell transport suggested in Alzheimer's disease

Research suggests that Alzheimer's disease may be caused by defects in a protein's role as an attachment point for a molecular motor that transports packets of protein within nerve cells. The study found that the missing protein, APP, and other proteins stay mainly in the cell body when it is absent, stalling normal cargo transport.

SourceHoward Hughes Medical Institute·JournalNature·DateDec 5, 2001
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.

Beware of leap year when predicting climate change, warns researcher

A study published in Nature magazine found that ignoring leap year can lead to a 10% statistical bias in predicting the arrival of spring, with trends being overestimated. The researcher emphasizes the importance of using accurate data to predict climate change and highlights the need for corrections.

SourceStanford University·JournalNature·DateDec 5, 2001
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.

Garlic supplements can impede HIV medication

Researchers discovered that garlic supplements decreased saquinavir levels by up to 51% in healthy volunteers. This suggests that patients taking saquinavir should avoid using garlic supplements to prevent interactions.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalClinical Infectious Diseases·DateDec 5, 2001

Astronomers unveil first detection of dark matter object in the Milky Way

Researchers from the Lawrence Livermore National Laboratory have detected a dark matter object in the Milky Way using microlensing light data and spectroscopy. The team measured the mass, distance, and velocity of the MACHO, a small star with a mass between 5% and 10% of the sun's mass at a distance of 600 light-years.

SourceDOE/Lawrence Livermore National Laboratory·JournalNature·DateDec 5, 2001

Study identifies new treatment option for heart failure patients

Valsartan has been shown to improve symptoms and outcomes in patients with heart failure, reducing morbidity by 13.2% and hospitalizations by 27.5%. The study also found significant improvements in quality of life and ejection fraction.

SourceUniversity of Minnesota·JournalNew England Journal of Medicine·DateDec 5, 2001

Tracking path of virulent bacteria via the web

Cornell students developed a web-based software and database to track bacterial strain characteristics and visualize molecular subtypes, allowing researchers to quickly analyze outbreaks and epidemics. The new tool reduces manual comparisons from days to minutes, aiding scientists in tracking virulent bacteria.

SourceCornell University·DateDec 5, 2001

UNC, Duke researchers discover cause of mysterious pancreatitis in some people

Researchers found that genetic mutations in people with chronic pancreas inflammation are associated with an increased risk of pancreatitis. The study identified specific mutations in the CF and PSTI genes, which can lead to a 900-fold increase in pancreatitis risk for those with two mutations.

SourceUniversity of North Carolina at Chapel Hill·JournalGASTROENTEROLOGY·DateDec 5, 2001
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.

Astronomers unveil first detection of dark matter object in the Milky Way

Researchers have detected a massive compact halo object, or MACHO, using gravitational microlensing event data from the Hubble Space Telescope and European Southern Observatory's Very Large Telescope. The object is estimated to be 5-10% the mass of the sun and is thought to comprise up to 50% of the Milky Way's dark matter content.

SourceUniversity of Pennsylvania·JournalNature·DateDec 5, 2001

UCSB lab discovers cross-protective vaccine

The UCSB researchers have developed a cross-protective Salmonella vaccine using the DNA adenine methylase technology, which is also being explored for use in other bacterial and viral pathogens. This breakthrough offers significant potential for combating biowarfare agents and could render current vaccines obsolete.

SourceUniversity of California - Santa Barbara·JournalInfection and Immunity·DateDec 5, 2001

First image and spectrum of a dark matter object

A team of astronomers has directly observed a Dark Matter object, confirming the theory that it consists of small, faint stars in galaxies like our Milky Way. The detection was made using the Hubble Space Telescope and the European Southern Observatory's Very Large Telescope.

SourceESO·JournalNature·DateDec 5, 2001