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Science News for November 22, 2005


Heavy drinking declines with age, though drop is slower among men and smokers

A recent study found that heavy drinking declined with age, although the drop was slower among men and smokers compared to women and non-smokers. The study also revealed that those who got married or quit smoking during follow-ups reduced their heavy drinking. Regular moderate drinking is likely beneficial for cardiovascular health.

SourceUniversity of California - Los Angeles·JournalAddiction·DateNov 22, 2005

Mental stress may be another culprit in raising cholesterol levels in healthy adults

A study published in Health Psychology found that individuals who experience larger increases in cholesterol levels due to stress are more likely to have high 'bad' cholesterol later on. The researchers identified a significant association between acute lipid stress responses and fasting lipid levels three years later.

SourceAmerican Psychological Association·JournalHealth Psychology·DateNov 22, 2005
SAMSUNG T9 Portable SSD 2TB

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Genetic research remains hidden

A study found significant differences in genetic effects between Chinese and non-Chinese studies on gene-disease associations. The researchers identified 161 Chinese studies on 12 topics, but only 20 were indexed in PubMed. This bias may lead to skewed evidence depending on language and publication sources.

SourcePLOS·JournalPLOS Medicine·DateNov 22, 2005

Was Einstein's 'biggest blunder' a stellar success?

A team of researchers discovered that dark energy behaves similarly to Einstein's cosmological constant with a precision of 10%, contradicting several theoretical predictions. The study uses innovative camera technology and observations from multiple telescopes worldwide.

SourceUniversity of Toronto·DateNov 22, 2005

Family stories show immigrants are not all melting in that pot

The study explores how immigrant families tell stories that reflect their country of origin and cultural identity. American-born children of newer immigrants are more likely to maintain ties with their family's country of origin, reflecting a shift towards cultural pluralism in the US.

SourceBlackwell Publishing Ltd.·JournalFamily Process·DateNov 22, 2005

Plant gene related to cancer treatment may foster new oncology drugs

Researchers from Purdue University and Kyoto University have discovered a plant gene that helps explain why human cells reject chemotherapy drugs. The gene, related to multi-drug resistant proteins in humans, moves a plant growth hormone into cells, suggesting a new approach to reducing drug dosages for cancer patients.

SourcePurdue University·JournalThe Plant Cell·DateNov 22, 2005
Apple iPhone 17 Pro

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

UF scientists say stem cells may trigger bone cancer

Researchers at UF have discovered a population of stem cells with characteristics of adult and embryonic stem cells in cultures derived from bone tumor biopsies. These findings suggest that osteosarcoma, a common bone malignancy in children, may be linked to primitive stem cells.

SourceUniversity of Florida·JournalNeoplasia·DateNov 22, 2005

Increased duration of breastfeeding associated with decreased risk of diabetes

A study of 83,585 and 73,418 women found that longer breastfeeding durations were associated with a reduced risk of type 2 diabetes, with risks decreasing by 15% and 14% per additional year of lactation. The findings suggest that maternal lactation may play a role in reducing the risk of type 2 diabetes in young and middle-aged women.

SourceJAMA Network·JournalJAMA·DateNov 22, 2005

Nature: Up to one-third of US in compliance with Kyoto Accords

More than one-third of the US population lives in 'probable' and 'possible' adopter regions that have pledged to reduce emissions. These areas contribute up to half of the US gross domestic product, equivalent to 16.9% of global GDP. However, compliance will be a challenge due to lack of enforcement mechanisms.

SourceUniversity of Vermont·JournalNature·DateNov 22, 2005

Daycare illness guidelines exist, but largely unknown

A study found that 60% of healthcare providers, parents, and childcare workers knew the national guidelines for common childhood ailments only 60% of the time. Temporary exclusions are designed to prevent disease spread, but inconsistent application can lead to contentious issues between parents and caregivers.

SourceCincinnati Children's Hospital Medical Center·JournalAmbulatory Pediatrics·DateNov 22, 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.

Sweat is good indicator heart attack may be coming

A study found that individuals with the shortest delays had a greater probability of experiencing the largest number of symptoms, including sweating, which may prompt them to seek treatment early. Those with longer delays had moderate probability of experiencing chest pain and shortness of breath

SourceUniversity of Illinois Chicago·DateNov 22, 2005

Two studies find ways to block the 'freshman 15'

Two studies by Cornell professor David Levitsky found that women who weighed themselves daily using the Tissue Monitoring System (TMS) gained less weight than those in a control group. Additionally, women who received lessons on estimating portion sizes in all-you-can-eat dining halls also showed no significant weight gain.

SourceCornell University·JournalInternational Journal of Obesity·DateNov 22, 2005

Genealogy of scaly reptiles rewritten by new research

A comprehensive genetic analysis of snakes, lizards, and other scaly reptiles has revealed surprising relationships among the animals. The study places primitive-looking iguanian lizards at the top of the tree, near advanced lineages like snakes and monitor lizards.

SourcePenn State·JournalNature·DateNov 22, 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.

The therapeutic role of melatonin in cancer worthy of study

A systematic review of randomized controlled trials and meta-analysis found that melatonin reduced the risk of death at one year by 34%. Melatonin was also shown to have a beneficial effect on sleep patterns in patients. The researchers urge caution in interpreting the clinical usefulness of large doses of melatonin.

SourceMcMaster University, Department of Clinical Epidemiology·JournalJournal of Pineal Research·DateNov 22, 2005

Drug may combat weight loss during radiation treatments

Researchers found that megestrol acetate reduced weight loss and improved quality of life in patients with lung cancer and head and neck cancers undergoing radiation treatment. The study showed significant weight gain in the group receiving megestrol acetate compared to those on a placebo.

SourceAtrium Health Wake Forest Baptist·DateNov 22, 2005

AKT cancer cell pathway demonstrates unexpected function

Researchers discovered AKT paradoxically blocks cancer cell motility and invasion abilities, preventing cancer spread. The study's findings suggest targeting AKT may increase cells' properties of motility and invasiveness.

SourceBeth Israel Deaconess Medical Center·JournalMolecular Cell·DateNov 22, 2005
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.

MRI best tool for studying intricate nerves in dogs

Researchers used MRI to study canine cranial nerves, enabling earlier disease recognition and imaging of nerve nuclei. The study sheds light on the challenges of identifying small nerves using conventional imaging modalities.

SourceBlackwell Publishing Ltd.·JournalVeterinary Radiology & Ultrasound·DateNov 22, 2005

HHMI awards $10 million for interdisciplinary graduate education

The Howard Hughes Medical Institute (HHMI) is providing $10 million in grants to 12 US universities to develop innovative graduate education programs. The programs aim to produce scientists with knowledge and skills to conduct research at the intersection of biomedical, physical, and computational sciences.

SourceHoward Hughes Medical Institute·DateNov 22, 2005
GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

UIC chemists characterize Alzheimer's plaque precursor

Researchers have determined the structure of pre-fibril assemblies, smaller assemblies that may be toxic culprits in Alzheimer's disease. The findings provide a new clue to understanding how these molecules interact and may lead to designing molecules that prevent misfolding proteins.

SourceUniversity of Illinois Chicago·JournalJournal of the American Chemical Society·DateNov 22, 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.

Magnet lab collaboration yields 'R&D 100' honor

The Florida State University magnet lab has collaborated with Keithley Instruments to develop a more accurate system for measuring extremely small currents and voltages. The new AC and DC Precision Current Source with Nanovoltmeter will help engineers create breakthrough consumer products and medical devices.

SourceFlorida State University·DateNov 22, 2005

Molecular cabal contributes to stroke damage

The study found that ischemia triggers NMDA receptors, which activate CaMKII, enhancing ASIC1a's sensitivity to acid. This increased sensitivity causes calcium overload leading to neuronal death. Drugs inhibiting NMDAR or CaMKII prevented this damage.

SourceCell Press·JournalNeuron·DateNov 22, 2005
Fluke 87V Industrial Digital Multimeter

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