Droughts like 1930s Dust Bowl may have been unexceptional in prehistoric times, new study suggests
... during intervening wet periods, with each wet-dry cycle lasting more than a century each. A report on the research will be delivered at a session at 1:30 p.m. on Wednesday, Aug. 4, in Meeting Room D136 of the Oregon Convention Center during the Ecological Society of America's 2004 annual meeting in Portla...AGU journal highlights - 29 July 2004
...ata indicates that the22-year geomagnetic activity cycle is more affected by internal solar variation thanw...heet is more stable during the initiation of solar cycle and is moredisturbed by high-speed streams as the solar cycle concludes. The researchers notethat th...Hunt for a new plant hormone points to carotenoids
...oordinated progression of a plant through its life cycle and the plant's diverse responses to changing environmental conditions. Many plant biologists therefore believe that there are more plant hormones out there waiting to be discovered. Recent results from work on pea, petunia, and the small weed Arabid...NSF awards $10 million in grants to ocean sites for long-term ecological research
...ish, modulates weather patterns and the hydrologic cycle of much of the western United States, and plays a vital role in the economy of myriad coastal communities," says Taylor. Understanding the mechanism of change in coastal ecosystems is important to the management of living and non-living resources in ...Scientists discover new intricacies in how ulcer bugs stick to stomach
...rking to understand the details and causes of this cycle and the activities of the proteins involved. "We're hoping that through combined approaches to blocking adhesion we may be able to prevent infection," Berg says. "It's possible, though, that we may have to set our sights on decreasing the sev...Study shows that ultrasound accreditation improves the quality of ultrasound practice
...at successfully completed an initial accreditation cycle and a reaccreditation cycle 3 years later was reviewed. A second list of applications from practices that recently completed fir...Heat and exercise alone may not determine how much we sweat
...) at the rear position of an adapted supine tandem cycle ergometer. Each subject remained in this position for 30 minutes while additional measurement devices were attached. After five minutes of baseline data collection, each subject performed one minute of loadless exercise while remaining in the supine ...Researchers in UGA Vet School discover a mechanism that blocks replication of a retrovirus
...ication at different points in early states of the cycle specifically by blocking entry to the host cell or blocking before insertion of viral DNA into the host genome. This is the first report of an endogenous retrovirus interfering with the viral replication so late in the cycle. Understanding how enJS5...Sponge substance works well with yew derivative to thwart cancer cell proliferation
...ells are stuck in a pre-division stage of the cell cycle called G2/M. Cancer cells that are restricted to the pre-division stage of the cell cycle cannot divide and ultimately die, thus reducing proliferation of tumor cells. Both drugs work by ...European researchers tackle mitosis
..." the largest integrated research project on cell cycle control within the European Commission's 6th Framework Programme (FP6). The partners will receive an 8.5 million Euro grant to address a fundamental question: How is cell division regulated? Cell division (or "mitosis") is one of the key processes of...Italian research links diet with endometriosis risk
...inal cavity. This tissue responds to the menstrual cycle as though it were still inside the uterus. The repeated growth and disintegration of endometrial tissue in the abdomen can cause bleeding, pain, inflammation, adhesions and infertility. It is estimated to affect up to five in every 100 women in Italy...When sun's too strong, plankton make clouds
...o strike Earth. "There is the potential that this cycle could slow global warming," said Siegel. "But right now we have no idea of the size of it or even what it means." In order to measure how much plankton may alter the climate, computer models would need to simulate different scenarios. One scenario w...Stem-cell research and reproductive cloning laws should be separate
...s reached, funding decisions in the next programme cycle will be made on an ad hoc basis. Dr Tauer comments: "A country or group of countries can legitimately not fund certain controversial types of scientific or biomedical research. But a decision is preferable to a stalemate. Scientists who do not know ...UCSD team determines cellular stress within body is critical
...ge, which can lead to DNA and protein damage, cell cycle arrest, and ultimately cell death. Cells compensate or adapt to osmotic stress by activating an osmotic stress response pathway that is controlled by a gene called nuclear factor of activated T cells 5 (NFAT5)/tonicity enhancer binding protein (TonE...New compound 'highly efficacious' at reducing human tumour growth
Innsbruck, Austria: Treatment with a new dual cell cycle and angiogenesis pathway inhibitor blocks VEGF-ind...esearch today (Tuesday 6 July, 2004). Loss of cell cycle control (runaway growth) and tumour-induced angiogenesis (development of new blood vessels to supply...Climate may play role in lynx's hunting ability
...was successful in the kill or not. "This lynx-hare cycle is an amazing phenomenon and it has proven to be a...upt this robust system we're used to seeing." This cycle forms one of the fundamental pulses in the boreal forest ecosystem. The hare is the prime herbivore ...Gestational diabetes not found to alter the metabolic processes in obese pregnant women
...evaluated in the follicular phase of the menstrual cycle and three were evaluated in the luteal phase. Each subject was instructed in a standard dietary regimen two weeks before each study period. The dietary regimen was designed to standardize nutritional intake for each subject, in order to maintain wei...NASA data shows hurricanes help plants bloom in 'ocean deserts'
...om such a process. "Better knowledge of the carbon cycle will improve our understanding of global ecology and how climate change might affect us," Babin said. The research appeared as a paper in a recent issue of the Journal of Geophysical Research-Oceans. Study co-authors include J.A. Carton, University ...ESA and EADS-CASA sign contract to build instrument for the SMOS mission
...eans are intrinsically linked to the Earth's water cycle and climate. Currently, in-situ measurements for s...arse, but if we are to better understand the water cycle so that the forecasting of climate, weather and extreme events such as floods can be improved more d...Two billion vulnerable to floods by 2050; number expected to double or more in two generations
...trigger prevent people to break through the brutal cycle of poverty." Scientists say warming sea temperatures may increase the number of cyclones and storm surges reaching shore. Storm surges can be just as lethal as the weather systems that spawn them "walls of water" 60 to 80 kilometres across and...