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Science News Archive February 2004 - Page 3


Page 3 of 11

Preventative bed rest during pregnancy may be more harmful than helpful

A $1.7 million NIH-funded study found that bed rest in high-risk pregnancies is associated with weight loss, increased risk of fetal growth restriction, backache, joint soreness, headaches, muscle loss, and depression. The study suggests that prescribed antepartum bed rest may be more harmful than helpful.

SourceSAGE·JournalBiological Research For Nursing·DateFeb 21, 2004

Lehigh researchers hone radiation source for THz devices

Terahertz (THz) frequencies have potential applications in medicine, remote sensing, imaging, and satellite communications. Lehigh researcher Yujie J. Ding has developed a compact THz radiation source that can generate coherent waves with high output powers, enabling new diagnostic tools and monitoring technologies.

SourceLehigh University·JournalApplied Physics Letters·DateFeb 20, 2004

Predators and human health

Research by Ostfeld and Holt found that mobile predators like foxes, coyotes, and falcons effectively suppress rodent numbers, reducing disease transmission to humans. In contrast, specialized predators like weasels cause periodic population booms, promoting the spread of rodent-borne pathogens.

SourceEcological Society of America·JournalFrontiers in Ecology and the Environment·DateFeb 19, 2004

System can predict disease spread

Researchers at Oregon State University and EPA developed a new approach to predict disease spread based on climate change and ecological changes. The system uses loop analysis and vectorial capacity formula to estimate the growth rate of diseases, providing valuable insights for public health officials.

SourceOregon State University·JournalTransactions of the Royal Society of Tropical Medicine and Hygiene·DateFeb 19, 2004

Vaccine shows promise for kidney cancer

A new vaccine has shown significant improvement in 5-year progression-free survival rates for patients with renal cancer, with a 77% rate in the vaccinated group compared to 68% in the control group. The well-tolerated treatment was associated with only 12 adverse events.

SourceThe Lancet_DELETED·JournalThe Lancet·DateFeb 19, 2004

Evolution caught in the act

A research team at the University of Michigan and the University of Texas describes how a resourceful bacterium developed an entirely new way to make disulfide bonds. This breakthrough could have significant implications for disease states like Alzheimer's and cystic fibrosis, as well as biotech applications.

SourceUniversity of Michigan·JournalScience·DateFeb 19, 2004

UK needs more seafarers

A study by Cardiff University predicts a current annual shortfall of UK ex-seafarers as much as 112. This shortage could lead to higher wage bills for shipping companies, reduced quality of employment, and less incentive to train cadets. The shipping industry has traditionally supplied skilled labor to shore-based industries.

Shark guide probes uncharted waters

A new guide, developed by NOAA Fisheries and Rhode Island Sea Grant, aims to increase species-specific identifications without associated mortality. The guide focuses on external characteristics and uses photographs to aid in identification, helping users distinguish among 44 highly migratory shark species.

Research examines treatment goals for acromegaly patients

Researchers found that achieving basal growth hormone levels of less than 2.5 µg/liter and glucose-suppressed GH levels of less than one µg/liter may not minimize cardiovascular risks in acromegaly patients. Instead, these patients are at increased risk for conditions like hypertension, diabetes, and osteoarthritis.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateFeb 18, 2004

New method for converting nitrogen to ammonia

A team of Cornell University researchers has successfully converted nitrogen to ammonia in a laboratory setting, molecule by molecule, using a zirconium metal complex. The process achieves complete fixation at lower temperatures than existing industrial methods, which require high pressures.

SourceCornell University·JournalNature·DateFeb 18, 2004

What are your odds of surviving into your hundreds?

A new study found that people with short variants of the APOB gene region have significantly lower total and low-density lipoprotein cholesterol levels in their blood. This association may contribute to a protective role of these variants in younger adults, while being detrimental to longevity in older individuals.

SourceBMC (BioMed Central)·JournalBMC Medical Genetics·DateFeb 18, 2004

Clinical trial of new TB vaccine begins

A new TB vaccine, rBCG30, is being tested in a human clinical trial to assess its safety and immune response. The vaccine, developed by Dr. Marcus Horwitz and his team at UCLA, has shown promise in preclinical trials and could potentially reduce the TB disease burden worldwide.

SourceAeras·DateFeb 17, 2004