News articles tagged with 'cycle'
Ancient environment found to drive marine biodiversity
— 25 Nov 2011 09:00 | Geology and palaeontologyMuch of our knowledge about past life has come from the fossil record - but how accurately does that reflect the true history and drivers of biodiversity on Earth?…
Fewer multiple births in states with insurance coverage for infertility
— 6 Apr 2011 16:46 | HealthFaced with the prospect of costly in vitro fertilisation (IVF) but with no help from insurance coverage, some infertile couples feel pressure to transfer multiple embryos in an attempt…
Supercritical carbon dioxide Brayton Cycle turbines promise giant leap
— 5 Mar 2011 13:09 | TechnologySandia National Laboratories researchers are moving into the demonstration phase of a novel gas turbine system for power generation, with the promise that thermal-to-electric conversion…
Rising CO2 is causing plants to release less water to the atmosphere, researchers say
— 4 Mar 2011 16:09 | EnvironmentAs carbon dioxide levels have risen during the last 150 years, the density of pores that allow plants to breathe has dwindled by 34 percent, restricting the amount of water vapour the…
Hearing loss rate in older adults climbs to more than 60 percent in national survey
— 28 Feb 2011 16:55 | HealthNearly two-thirds of Americans age 70 and older have hearing loss, but those who are of black race seem to have a protective effect against this loss, according to a new study led by…
HIV makes protein that may help virus's resurgence
— 26 Feb 2011 16:30 | HealthNew research enhances the current knowledge of how human immunodeficiency virus type-1 (HIV-1), which causes AIDS, controls the cell cycle of cells that it infects. The new findings…
Waking up is hard to do
— 17 Feb 2011 18:54 | HealthNorthwestern University scientists have discovered a new mechanism in the core gears of the circadian clock. They found the loss of a certain gene, dubbed 'twenty-four,' messes up the…
A new model to predict accurate outcomes for IVF
— 5 Jan 2011 18:00 | HealthCouple-and treatment-specific factors can be used to provide infertile couples with an accurate assessment of the likelihood of having a successful outcome following in-vitro fertilisation…
Champion hydrogen-producing microbe
— 15 Dec 2010 17:41 | BiologyInside a small cabinet the size of a dorm refrigerator in one of Himadri B. Pakrasi's labs, a blue-green soup percolates in thick glass bottles under the cool light of red, blue and…
Contact with dads drops when women ovulate
— 30 Nov 2010 21:42 | HealthThrough an innovative use of cell phone records, researchers at UCLA, the University of Miami and Cal State, Fullerton, have found that women appear to avoid contact with their fathers…