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Science News for January 31, 2003


Young plant's natural defenses amount to more than just its seed

A research team at Rockefeller University has discovered a novel protein, AFP, that regulates early growth arrest in young plants. This development provides insights into how plants naturally tolerate drought and stress, with potential applications in creating drought-resistant crops.

SourceRockefeller University·JournalGenes & Development·DateJan 31, 2003

UCLA study finds surgeon experience level critical

A UCLA study found substantial evidence that surgeon experience is associated with lower complication rates in radical prostatectomy. Low-volume surgeons had twice the in-hospital complication rate of high-volume surgeons, and their patients were hospitalized one day longer on average.

SourceUniversity of California - Los Angeles·JournalJournal of Clinical Oncology·DateJan 31, 2003

Are growing portion sizes leading to expanding waistlines?

A study by the American Dietetic Association found that most marketplace portions exceed standard sizes by as much as eight times. Researchers also discovered that portion sizes of many foods and beverages have increased two to five times since their introduction.

SourceAmerican Dietetic Association·JournalJournal of the American Dietetic Association·DateJan 31, 2003

Chaos in the heart

A team of scientists has discovered that chaotic wave patterns in the heart's electrical pulses can be controlled and potentially terminated using a weak periodic modulation. This discovery could lead to new methods for treating cardiac fibrillation, a life-threatening condition.

SourceMax-Planck-Gesellschaft·JournalScience·DateJan 31, 2003
Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

Report to aid nation in managing freshwaters

The report highlights the need for a multi-faceted approach to manage freshwater resources, including empowering local groups and increasing communication among disciplines. It also recommends protecting minimally impaired ecosystems and creating awareness of healthy ecosystems' importance to everyday living.

SourceVirginia Tech·JournalEcological Applications·DateJan 31, 2003

URI Office of Marine Programs awarded Sloan Grant for Census of Marine Life

The URI Office of Marine Programs has been awarded a Sloan Grant to support the Census of Marine Life, a global research effort to study marine biodiversity. The program will create an international education platform, provide networking resources for scientists and communicate the importance of ocean conservation.

SourceUniversity of Rhode Island·DateJan 31, 2003
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.

Expressing anger may protect against stroke and heart disease

A new study found that men with moderate anger expression had nearly half the risk of nonfatal heart attacks and a significant reduction in stroke risk compared to those with low anger expression. Moderate anger may be protective against cardiovascular disease over a limited period, according to researchers.

SourceCenter for Advancing Health·JournalPsychosomatic Medicine·DateJan 31, 2003

The making of a brain

The study reveals that the SIX3 protein secures anterior neural cells by blocking out a posteriorizing signal, crucial for forebrain formation. In mouse models and zebrafish, forced expression of Six3 rescues forebrain development, demonstrating its critical role in vertebrate head development.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJan 31, 2003

Sperm use heat sensors to find the egg

Researchers at Weizmann Institute find that sperm are attracted to fertilization site by temperature difference. A temperature-driven mechanism, known as thermotaxis, guides the sperm through the fallopian tube and prepares them for penetration of the egg.

SourceAmerican Committee for the Weizmann Institute of Science·JournalNature Medicine·DateJan 31, 2003

Gene vital to radiation resistance in bacteria

The irrE gene plays a crucial role in D. radiodurans' ability to withstand extreme radiation levels, and its regulation may be linked to DNA repair mechanisms. Understanding the gene's function could lead to breakthroughs in human cancer prevention and nuclear waste cleanup.

SourceAmerican Society for Microbiology·DateJan 31, 2003
Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Using sewage sludge as fertilizer

Researchers found liquid sewage sludge to be just as effective as traditional synthetic fertilizers in improving crop yields and nutrient content. The study also showed low levels of heavy metals in crops, groundwater, and soil, making it a promising environmentally safe alternative for waste disposal.

SourceAmerican Society of Agronomy·JournalAgronomy Journal·DateJan 31, 2003

Sealing a cell's fate

Dr. Rossant and colleagues find that Flk1 and Tal1 proteins steer embryonic cells towards endothelial, hematopoietic, or smooth muscle fates. The study provides further evidence for a common hemangioblast progenitor cell, which can differentiate into the three cell types.

SourceCold Spring Harbor Laboratory·JournalGenes & Development·DateJan 31, 2003