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Science News for February 7, 2010


New magnetic tuning method enhances data storage

A new magnetic tuning method has been developed to improve the storage capacity of next-generation computer hard drives. The method, reported in the Proceedings of the National Academy of Sciences, enables writing, storage, and readout at a fixed temperature by tuning the softness of the magnet with an external magnetic field.

SourceUniversity of Chicago·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2010

Gene that improves quality of reprogrammed stem cells identified by Singapore scientists

Researchers at the Genome Institute of Singapore have identified the genetic molecule Tbx3, which significantly improves the quality of induced pluripotent stem cells (iPS cells). The study successfully produced iPS cells that can recapitulate entire developmental processes and exhibit superior ability for germ-line transmission.

Estrogen-only HRT may increase risk of asthma after menopause

A large-scale study found that estrogen-only hormone replacement therapy (HRT) may increase the risk of developing asthma after menopause. Women who used estrogen-only HRT were 21% more likely to develop asthma than those who never used HRT, with a significant increased risk among non-smokers and those with previous allergies.

SourceBMJ Group·JournalThorax·DateFeb 7, 2010

A lower overall radiotherapy dose given in fewer, larger daily doses can result in better quality of life for patients with breast cancer

A study published in The Lancet Oncology found that hypofractionated radiotherapy schedules do not increase adverse symptoms or worsen body image compared to the international standard treatment. Patients reported moderate or striking concerns about body image, but these did not differ between radiotherapy schedules.

SourceThe Lancet_DELETED·JournalThe Lancet Oncology·DateFeb 7, 2010