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Science News for December 2, 2004


The impact of body weight on the progression of knee osteoarthritis

A study published in Arthritis & Rheumatism found that weight gain significantly increases the risk of disease progression in knees with moderate malalignment, but has no impact in neutrally aligned or severely malaligned legs. Researchers suggest targeting weight loss efforts for patients with moderate malalignment to slow disease pro...

SourceWiley·JournalArthritis & Rheumatism·DateDec 2, 2004
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.

New method measures emotional quality of daily experience

A new method reconstructs people's previous day experiences to capture their emotions, revealing intimate relations as most enjoyable activities. The study found taking care of children was less enjoyable than expected, while general life circumstances had a limited impact on daily feelings.

SourceUniversity of Michigan·JournalScience·DateDec 2, 2004

Obesity gets you where you live, UH study finds

A UH study reveals that lack of fresh produce in lower-income neighborhoods contributes to weight and health problems among these populations. The research highlights the need for improved access to healthy food options in underserved communities.

SourceUniversity of Houston·DateDec 2, 2004
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.

Save up your energy reserves for a longer life!

Scientists found that animals with extra copies of the AMP-1 enzyme lived 13% longer than controls, while environmental stressors activating AMP-1 also led to longer lives. The study's findings have broad implications for understanding human aging and potentially extending lifespan through exercise and therapeutics.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateDec 2, 2004

November/December 2004 Annals of Family Medicine tip sheet

The article highlights three key findings: depression severity impacts functioning and quality of life more dramatically in elderly patients than other chronic medical conditions. Rural blacks have significantly worse diabetes and hypertension control, while 42% of clinic appointments are no-shows due to issues of disrespect by the hea...

SourceAmerican Academy of Family Physicians·JournalThe Annals of Family Medicine·DateDec 2, 2004

Bosons crystallize in 2-D traps

Researchers at Georgia Tech discovered that bosons placed in two-dimensional harmonic traps will crystallize when their repulsive interactions are increased. Theoretical simulations showed six bosons forming a polygonal crystal with one boson in the center.

SourceGeorgia Institute of Technology·JournalPhysical Review Letters·DateDec 2, 2004

USC-led team of scientists recreates DNA-mending pathway in test-tube

A team of scientists led by Michael Lieber has successfully recreated the mammalian nonhomologous DNA end joining (NHEJ) pathway in a test tube. This breakthrough could lead to the development of new cancer drugs that target this pathway, which is also essential for repairing radiation damage and maintaining immune function.

SourceUniversity of Southern California·JournalMolecular Cell·DateDec 2, 2004
Apple iPhone 17 Pro

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

Replicating an eel's nerve circuitry may aid paralyzed people

A team of researchers led by Johns Hopkins University is developing a neuroprosthetic implant that could restore locomotion in patients with spinal cord injuries. The device mimics the signals sent by the brain and stimulates dormant control centers to send movement instructions to muscles.

SourceJohns Hopkins University·DateDec 2, 2004

Good results with only one egg in in-vitro fertilization

A study of 661 women found that transferring only one embryo during IVF resulted in fewer multiple births and higher pregnancy rates. The single-embryo group had a significantly lower proportion of deliveries with twins or more siblings compared to the two-embryo group.

SourceSwedish Research Council·JournalNew England Journal of Medicine·DateDec 2, 2004

New research tool aids study of national well-being

A new method, called the Day Reconstruction Method (DRM), allows researchers to better measure individuals' and society's quality of life. The technique records daily activities and feelings, providing a more accurate picture of well-being than current methods.

SourcePrinceton University·JournalScience·DateDec 2, 2004
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.

Choosing the kind of fat to avoid obesity

Research found that eicosapentaenoic acid (EPA), an omega-3 polyunsaturated fatty acid from fish oils, stimulates the secretion of leptin in primary cell cultures of fat from rats. This effect may be beneficial for maintaining body weight during obesity treatment and improving associated pathologies.

SourceElhuyar Fundazioa·DateDec 2, 2004

No long-term harm from repeated prenatal ultrasound examination

A study of over 2700 children found repeated prenatal ultrasounds during pregnancy had no long-term impact on growth or development. Physical and developmental assessments showed similar outcomes between children exposed to multiple ultrasounds and those with a single scan.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 2, 2004

Salt-water minnow research helps explain human cardiology

Researchers discovered a genetic set of keys that unlocks the mystery of why some people can eat fatty foods without suffering from heart disease. The study found significant variations in genes associated with sugar and fat metabolism, which explain much of the variation in cardiac metabolism.

SourceU.S. National Science Foundation·JournalNature Genetics·DateDec 2, 2004

Adults taking eplileptic medications more likely to be unemployed

A 30-year follow-up study of adults with epilepsy found that those on long-term medication had higher rates of unemployment and lower socioeconomic status. Despite being in remission, participants still taking antiepileptic drugs (AED) showed similar outcomes to those on medication.

SourceBlackwell Publishing Ltd.·JournalEpilepsia·DateDec 2, 2004

Thinking beyond deworming

The editorial concludes that deworming programs have substantial public health benefits and reductions in global burden of disease. Simple, effective, safe, and cheap treatments are already available, but systematic delivery requires industry, funders, and political will.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 2, 2004
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.

Impact of 2002 Canadian forest fires felt 700 miles away in Baltimore, Maryland

A study found that air pollution from Canadian forest fires increased eight-fold in Baltimore, with indoor levels reaching as high as 366 ug/m3. The researchers suggest reviewing health advisories to protect vulnerable individuals from transcontinental transport of pollutants.

SourceJohns Hopkins Bloomberg School of Public Health·JournalEnvironmental Science & Technology·DateDec 2, 2004

Employees bring bad moods home, but they disappear by morning

Research by Timothy Judge found that stressed employees bring negative moods home with them, but these effects are short-lived. Employers can contribute to positive moods in both work and family life by treating employees well, the study suggests.

SourceUniversity of Florida·JournalJournal of Applied Psychology·DateDec 2, 2004

Artery variations increase complication risk in liver transplants

Researchers used 3D MDCT to evaluate patients before surgery and found that abnormal liver artery anatomy increases the risk of complications after a transplant. The study analyzed over 80 patients and found that those with variant anatomy were more likely to experience post-surgical complications.

SourceAmerican College of Radiology·JournalAmerican Journal of Roentgenology·DateDec 2, 2004

Meridiani Planum could have been suitable for life on Mars

The Mars rover Opportunity has found evidence that liquid water once flowed through the region of Meridiani Planum, a vast plain on Mars. This discovery suggests that conditions in this area may have been habitable for life at some point in Martian history.

SourceCornell University·JournalScience·DateDec 2, 2004
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.