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Science News for February 7, 2005


A Family's Guide to Living with HIV

A Family's Guide to Living with HIV is a comprehensive resource providing detailed information on the disease, its treatment, and its impact on daily life. The book also focuses on supporting psychological concerns, nutrition, education, and social activities for patients and their families.

SourceIndiana University·DateFeb 7, 2005

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

The researchers created nano-sized probes using emissive polymersomes that can optically image tissue structures deep below the skin, with potential to target multiple cancer cell-surface markers simultaneously. The probes use near-infrared light to produce a bright signal detectable through imaging systems.

SourceUniversity of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2005
Apple iPhone 17 Pro

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

Bone density appears to recover after adolescents discontinue injected contraceptive

After discontinuing DMPA, adolescent girls experienced significant gains in bone mineral density, with their levels comparable to those of other women in their age group. The study's findings suggest that DMPA use may not have a lasting impact on bone health in young women.

SourceNIH/Eunice Kennedy Shriver National Institute of Child Health and Human Development·JournalArchives of Pediatrics and Adolescent Medicine·DateFeb 7, 2005

Melatonin shrinks bird gonads. What does the popular supplement do in humans?

A new study found that melatonin increases production of GnIH hormone in birds, which has opposite effects to GnRH and can trigger gonad shrinkage. This discovery suggests potential effects on human reproductive axis and raises concerns about the hormone's interactions with other systems.

SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2005

Scientists announce smallest extra-solar planet yet discovered

Astronomers have discovered the smallest extra-solar planet to date, orbiting a pulsar in a planetary system resembling our own inner solar system. The new planet is estimated to be one-fifth the mass of Pluto and has an orbit approximately six times larger than its third planet.

SourcePenn State·DateFeb 7, 2005

Dartmouth Medical School lab blends DNA and technology to aid in crime-solving

The Interactive Media Laboratory at Dartmouth Medical School is developing virtual clinics to educate healthcare and victims' services providers on DNA evidence collection and interpretation. The training aims to improve the efficiency of the justice system by streamlining the process of analyzing and submitting DNA data.

SourceThe Geisel School of Medicine at Dartmouth·DateFeb 7, 2005
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.

Sexual cooperation: Mating increases longevity in ant queens

Researchers found that ant queens benefit from mating, gaining increased lifespan and reproductive success. Sexual cooperation rather than conflict promotes this benefit in social insects, allowing queens to experience a long reproductive phase after colony maturity.

SourceCell Press·JournalCurrent Biology·DateFeb 7, 2005
Celestron NexStar 8SE Computerized Telescope

Celestron NexStar 8SE Computerized Telescope combines portable Schmidt-Cassegrain optics with GoTo pointing for outreach nights and field campaigns.

Rice's CNST awards Smalley/Curl funds for innovation

The Smalley/Curl Fund for Innovation supports research in medical diagnostics and drug delivery using gold nanorods. Rice University faculty receive one-year grants to develop novel ideas with the potential to impact all areas of nanotechnology.

SourceRice University·DateFeb 7, 2005

Asthma gene clusters identified

Researchers have identified two distinct gene expression profiles in children with acute asthma, which could lead to customized treatments. The study's findings may enable targeted therapies for acute asthma attacks and help predict impending attacks by analyzing a patient's unique genetic profile.

SourceCincinnati Children's Hospital Medical Center·JournalJournal of Allergy and Clinical Immunology·DateFeb 7, 2005

Seismic network could improve disaster response

The Global Seismographic Network can track seismic signals in real-time, allowing researchers to compile and interpret information about potential hazards sooner. The network's unparalleled detail enables scientists to quickly determine the magnitude and location of an event in near real-time.

SourceAmerican Geophysical Union·JournalEos·DateFeb 7, 2005
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.

NSF submits its fiscal 2006 budget request of $5.6 billion

The U.S. National Science Foundation has submitted a $5.6 billion budget request for fiscal year 2006, representing a 2.4% increase over the previous year's budget. The agency plans to focus on research in frontier areas and provide support for the workforce, despite some tough choices ahead.

SourceU.S. National Science Foundation·DateFeb 7, 2005

Opposing fat metabolism pathways triggered by a single gene

Researchers discover that the nuclear hormone receptor nhr-49 controls two opposing pathways regulating fat metabolism in nematodes. The discovery reveals a complex feedback system controlling fat consumption and composition, with potential implications for understanding human metabolic disorders such as diabetes and obesity.

SourcePLOS·JournalPLOS Biology·DateFeb 7, 2005

Milk, fruits and vegetables may help reduce disability risk

A recent study found that consuming high amounts of dairy products and fruits/vegetables was associated with lower risk for functional limitations and disability. The researchers suggest that calcium and vitamin D from dairy foods, as well as antioxidants in fruits and vegetables, may play a role in reducing disability risk.

SourceAtrium Health Wake Forest Baptist·JournalAmerican Journal of Clinical Nutrition·DateFeb 7, 2005

Marijuana use affects blood flow in brain even after abstinence

A recent study by the American Academy of Neurology found that marijuana use impacts brain blood flow, even after a month of abstinence. The research involved 54 marijuana users and 18 control subjects, who underwent transcranial Doppler sonography to measure blood flow velocity and pulsatility index.

SourceAmerican Academy of Neurology·JournalNeurology·DateFeb 7, 2005
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.

Why North America is not a rhythm nation

Research reveals that North American adults have difficulty perceiving rhythmic patterns in non-Western music, while infants can adapt to various rhythms. The study found that exposure to a single type of rhythm during childhood affects this ability.

SourceAssociation for Psychological Science·JournalPsychological Science·DateFeb 7, 2005

Bone density returns when teens stop using Depo Provera, Group Health study finds

A new study has found that teenaged women who stop using Depo-Provera experience significant gains in bone density compared to those still taking the contraceptive. The research suggests that continuous use of Depo-Provera leads to a loss of bone mass, which appears to be reversible once the drug is discontinued.

SourceGroup Health Research Institute·JournalArchives of Pediatrics and Adolescent Medicine·DateFeb 7, 2005
Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Former UNC students report mindfulness meditation helps relationships

A study conducted by Dr. James Carson and his wife Kimberly found that mindfulness meditation can help couples reduce interpersonal stress and boost their satisfaction with each other by 50%. The eight-week training sessions taught couples how to become more aware of the present moment and direct positive feelings toward their loved ones.

SourceUniversity of North Carolina at Chapel Hill·JournalBehavior Therapy·DateFeb 7, 2005

Aetiology of congenital heart disease explained

Researchers identified a specific antibody causing congenital heart block, targeting the p200 part of the Ro protein. The level of this antibody in mothers correlates with the degree of damage to the heart, highlighting a potential marker for high-risk pregnancies.

SourceSwedish Research Council·JournalJournal of Experimental Medicine·DateFeb 7, 2005

Improving computer-supported work through scenario-based evaluation

Researchers developed a new method to evaluate complex systems, finding four types of benefits: measurable, tangible, intangible, and unrealized. The scenario-based evaluation (SBE) approach encourages consideration of contextual factors and provides rich recommendations for system redesign and organizational initiatives.

SourcePenn State·DateFeb 7, 2005
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.

Children's taste sensitivity and food choices influenced by taste gene

Researchers found that genetic variation in the TAS2R38 gene affects bitter taste sensitivity in children, influencing their food preferences. Children with a bitter-sensitive allele prefer sweeter tastes, while those with two bitter-insensitive alleles tend towards vegetable consumption.

SourceMonell Chemical Senses Center·JournalPEDIATRICS·DateFeb 7, 2005

When does a mole become a melanoma?

Researchers genetically engineered zebrafish to develop black-pigmented moles with mutated human BRAF and p53 genes. The study shows that BRAF mutations are necessary for mole development, but insufficient for cancer. The model provides insights into how gene mutations contribute to melanoma

SourceBoston Children's Hospital·JournalCurrent Biology·DateFeb 7, 2005

Circles of DNA might help predict success of stem cell transplantation

The level of signal-joint TRECs (sjTRECs) in the blood appears to directly reflect the ability of the transplant recipient's thymus gland to process donated stem cells. High levels of sjTRECs indicate a successful reconstitution of the T cell population, improving patient outcomes.

SourceSt. Jude Children's Research Hospital·JournalBlood·DateFeb 7, 2005
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.

Mailman School of Public Health researchers develop infectious disease diagnostic tool

Researchers at Columbia University's Mailman School of Public Health have developed a new technology platform that can identify multiple pathogens simultaneously, providing high sensitivity and breadth. This breakthrough has the potential to revolutionize differential diagnosis and detection in various fields, including clinical medici...

SourceColumbia University's Mailman School of Public Health·JournalEmerging Infectious Diseases·DateFeb 7, 2005

Gender bias in child growth evaluations may miss disease in girls

A study found that boys were more likely to be referred for growth evaluations than girls, despite girls' greater height deficits. The researchers discovered that 41% of short girls had underlying diseases, compared to 15% of short boys.

SourceChildren's Hospital of Philadelphia·JournalThe Journal of Pediatrics·DateFeb 7, 2005

Birth size and adult cancer risk

A Swedish cohort study found that larger babies had a higher risk of certain adult cancers, including lymphatic and digestive cancers. Women who were large at birth were also more likely to develop breast cancer before age 50.

SourceWiley·JournalInternational Journal of Cancer·DateFeb 7, 2005
Meta Quest 3 512GB

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

Clues on cancer from a zebrafish model of melanoma

Researchers have developed a zebrafish model that shows human BRAF mutations can induce dramatic black pigmentation and aggressive melanomas. The study also found that p53 deficiency is crucial for melanoma development, providing new insights into melanoma genetics and drug development.

SourceCell Press·JournalCurrent Biology·DateFeb 7, 2005

Sequencing of marine bacterium will help study of cell communication

The genome sequence of V. fischeri reveals surprising parallels with Vibrio cholerae and other pathogens, indicating toxin activity genes. The research sheds light on the connection between quorum sensing and global regulatory networks in bacterial cell communication.

SourceVirginia Tech·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2005

Sexual frustration and learning in fruit flies

Researchers found that Drosophila males can be trained to avoid certain female pheromones associated with past failures in mating. This study demonstrates a complex learning mechanism involving hydrocarbon olfactory cues and memory consolidation.

SourceCell Press·JournalCurrent Biology·DateFeb 7, 2005
Sky-Watcher EQ6-R Pro Equatorial Mount

Sky-Watcher EQ6-R Pro Equatorial Mount provides precise tracking capacity for deep-sky imaging rigs during long astrophotography sessions.

While under pressure those most likely to succeed will most likely fail

A study of 93 Michigan State University undergraduates found that those who perform well under high-pressure conditions tend to do poorly in standardized tests. The researchers argue that this suggests that high-stakes tests may not be effective predictors of future academic success.

SourceBlackwell Publishing Ltd.·JournalPsychological Science·DateFeb 7, 2005