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The coming of biofuels: Study shows reducing gasoline emissions will benefit human health

... has produced a novel and comprehensive "Life cycle Impact Assessment" to measure the benefits on ... Public Health. "Just think, if we had done a life cycle impact assessment on the human health effects of ... in San Francisco, he described a biofuels Life cycle Impact Assessment (LCIA) that he carried out in ...

Yeast missing sex genes undergo unexpected sexual reproduction

... yeast Candida is able to complete a full sexual cycle in a test tube, even though it's missing the ... . "I think the fact that it has a complete sex cycle is likely to play a role in the evolution of drug ... that eight Candida species which have a sexual cycle were missing many of the genes related to ...

Study finds hemlock trees dying rapidly, affecting forest carbon cycle

... Appalachians and rapidly altering the carbon cycle of these forests. SRS researchers and cooperators ... Researchers tracked changes in the carbon cycle of these hemlock stands over a 3-year period. Scientists measured components of the forest carbon cycle including tree growth, leaf litter and fine root ...

New models question old assumptions about how many molecules it takes to control cell division

... noise in controlling the basic events of the cell cycle DNA replication and cell division. Their ... unreliable." Progression through the cell cycle is indeed a noisy process, with typical ... accurate models of molecular noise in the cell cycle control system of yeast cells and to compare ...

JDRF-funded researchers discover proteins regulating human beta cell replication

... by a series of events known as the cell cycle or cell division cycle. Pittsburgh researchers ... comprehensively the proteins regulating the cell cycle in human beta cells. They examined 34 different ... by demonstrating that modulation of specific cell cycle control proteins stimulates human beta cell ...

Yale journal finds nanomaterials may have large environmental footprint

... Approaches for identifying and reducing the life cycle hazards of nanomaterials Quantified life cycle energy requirements and environmental impacts ... remedies. "Through the use of tools such as life cycle assessment, green chemistry and pollution ...

Circadian clock may be critical for remembering what you learn, Stanford researchers say

... quietly pulses inside us all, guiding our daily cycle from sleep to wakefulness and back to sleep ... calm it. The circadian clock controls the daily cycle of sleep and wakefulness by inhibiting different ... day the researchers delayed the usual light/dark cycle by three hours. "It is like sending them west ...

NASA presentations at American Geophysical Union Joint Assembly

... the magnetosphere. Closing the Water cycle over the Ocean Using a Constellation of ... up must come down, and clarifying how the water cycle will change as the climate warms. Water ... river discharge. They will show how these water cycle components balance each other quantitatively over ...

Genetic 'tag team' keeps cells on cycle

... that although the new insights into the cell cycle were made in single-celled yeast, they may well ... story. Haases team now thinks that many cell cycle activities are driven by a series of ... go back to turn on the first, starting the whole cycle over again. Mathematical models constructed by ...

Single-celled bacterium works 24-7

... type of cyanobacterium (blue-green alga) known to cycle between photosynthesis during the day and ... according to this study, is that the day-night cycle has a tremendous impact on the cells physiology, ... surprise is the tremendous impact the day-night cycle has on the overall physiology of the cell. It ...

Emissions irrelevant to future climate change?

... how feedback between our climate and the carbon cycle changes over time. In their simulations, the ... and Eliseev found that although climatecarbon cycle feedback grows initially, it then peaks and ... lead to eventual saturation of the climatecarbon cycle feedback, Mokhov and Eliseev explain. ...

Sudden 'ecosystem flips' imperil world's poorest regions, say water experts

... green water. Blue water is the part of the cycle we can see, like streams and rivers, said Gordon, ... of catastrophic changes to the hydrological cycle that could be caused by agriculture and land-use ... the green water component of the hydrological cycle is also important, as well as encouraging more ...

New twist on life's power source

... But this is not really true since this novel cycle is also a way of using sunlight to produce ... Capturing energy by a light-driven water-to-water cycle is critical since marine cyanobacteria are ... says Mackey. Our findings show that this novel cycle occurs in two major ocean basins and suggest that ...

Scientists uncover a novel mechanism that regulates carbon dioxide fixation in plants

... research shows for the first time how the Calvin cycle can be regulated in response to a changing light ... two enzymes that are involved in the Calvin cycle phosphoribulokinase (PRK) and ... partnerships are formed and the slower the Calvin cycle becomes. In the light, they break apart rapidly ...

Early environment may be key to determining bird migration location

... real estate next door may help set off a lifelong cycle of habitat location. The mangrove birds ... are, once again, scrabbling in the scrub. The cycle The cycle begins for the young redstart when it leaves its ...

Trainor Lab characterizes gene essential for prenatal development of nervous system

... differentiation of immature neural cells with the cycle of cell division that increases their numbers. ... spinal cord by coupling progression through the cycle of cell division with differentiation of neural ... process of neurogenesis. The impact of cell cycle length on the formation of interneurons versus ...

AGU journal highlights -- Jan. 28, 2008

... of the Southern Annular Mode (SAM), a dominant cycle of atmospheric variability in the Southern ... and contraction of Mars's exosphere with solar cycle Incoming visible solar radiation heats the ... study the response of Mars's exosphere to solar cycle variation by analyzing data collected between ...

Stowers Institute's Hawley Lab identifies factors responsible for restart of meiotic cycle

... that work in concert to restart the meiotic cycle of oocytes following a natural period of ... expression of a protein that restarts the cell cycle and the inactivation of an inhibitory protein ... to the conclusion that the restart of the meiotic cycle in Drosophila depends on two mechanisms, said ...

A mechanism to explain biological 'cross-talk' between 24-hour body cycle and metabolism

... Its well known that the bodys energy levels cycle on a 24-hour, or circadian, schedule, and that ... The findings further tie together the 24-hour cycle of the body with metabolic function. Circadian rhythms are our sleep-wake cycle and metabolism is how we process food, so it ...

Nutrient pollution drives frog deformities by ramping up infections, says CU-Boulder study

... in frogs." The trematode has a complex life cycle that involves three host species, he said. In ... including wading birds to complete their life cycle by consuming infected frogs and spreading the ... took on the role of birds in the trematode life cycle by adding parasite eggs to the tanks, then ...

American Chemical Society's Weekly PressPac -- Aug. 15, 2007

... a laundry detergent that hardly needs a rinse cycle to a non-irritating eye rinse to increasing the ... a surfactant that would switch between the wash cycle and rinse cycle during clothes washing, which would mean you ...

Bursts of waves drive immune system 'soldiers' toward invaders

... research shows. The scientists think that this cycle of Hem-1 propulsion and annihilation is likely to ... he says. The Hem-1 recruitment assures the cycle will continue. The cycle, or circuit, of ... Kirschner is a co-author on the paper. The cycle the scientists studied is very similar in concept ...

Adding up renewable energy

... geothermal add up in terms of their complete life cycle from materials sourcing, manufacture, running, ... Researchers in Greece have carried out a life cycle assessment to find the answer. Increasing ... Greece. They argue that a whole life cycle assessment of any environmentally friendly energy ...

DOE-funded research projects win 46 R&D 100 Awards for 2009

... Systems Lithium-ion Battery Technology - The highest energy and cycle life of all lithiumion systems available today for the plugin hybrid ... traditional batteries, the PowerPlane UX Microbattery has a long life cycle even if it is frequently and fully discharged. (Jointly with Planar ...

Parasitic worms make sex worthwhile

... in the shallows or at depth, where snails help the worm complete its life cycle by eating the eggs and providing a host for the next generation of worm ... "What matters here is the fact that the parasite can't complete its life cycle in the deeper parts of the lakes because the ducks only forage in the ...

C. difficile spores spread superbug

... settings. A team of scientists have successfully mirrored the infection cycle of C. difficile by generating a 'mouse hospital' with conditions ... how this highly infectious pathogen spreads, investigating the entire cycle of transmission is absolutely vital. We looked at mice carrying C. ...

SETAC Europe addresses global ecosystem health in Gothenburg

... symposium of the European Union Coordinated Action for Innovation in Life cycle Analysis for Sustainability, a special symposium on emerging chemicals, ... on ecotoxicology, environmental and analytical chemistry, life cycle assessment and management, marine ecosystems, nanomaterials, ...

A biological basis for the 8-hour workday?

... report where researchers have found other periodicities than the 24-hour cycle functioning in a live animal. These findings, which appear in the ... in the liver. Additionally, 260 genes were expressed on a 12-hour cycle and 63 genes were expressed on an 8-hour cycle. The investigators saw ...

Regulation of cell proliferation by the OGF-OGFr axis is dependent on nuclear localization signals

... in OGFr. These results show that the pathway for regulating the cell cycle by the OGF-OGFr complex involves the shuttling of the peptide-receptor ... McLaughlin states: "Given the extraordinary biological control of the cell cycle by the OGF-OGFr axis, it may be envisioned that either a loss or a gain in ...

April 2009 Geology and GSA Today media highlights

... to living on land. Large perturbations of the carbon and sulfur cycle associated with the Late Ordovician mass extinction in South China ... Their geochemical data reveal large perturbations of the sulfur and carbon cycle accompanying the mass extinction, and their isotopic data suggest ...

Soil and sediment contamination assessment more accurate

... contamination. Effects are assessed exposing the organisms to PACs in life cycle tests. In seventy percent of cases this results in highly predictable ... also demonstrated that large and unpredictable effects on the life cycle frequently occur, mainly due to exposure to the 'new' PACs. Moreover, a ...

Scripps research team identifies key molecules that inhibit viral production

... among all HCV genotypes, plays several essential roles in the viral cycle in the host cell; studies have suggested that these core-core or ... coat the capsid. This core protein plays an essential role in the HCV cycle during assembly and release of the infectious virus, as well as ...

UNC study: Tinkering with the circadian clock can suppress cancer growth

... internal time-keeping mechanism that keeps the body running on a 24-hour cycle can slow the progression of cancer. The study disputes some of the most recent research in the field indicating that alteration of this daily cycle predisposes humans and mice to cancer. The UNC researchers found that ...

What happens when we sleep

... of Sciences ( PNAS ), provides deeper understanding of the sleep-wake cycle and vital insight into the basis of sleep disorders such as narcolepsy and ... brain in response to how long we are awake in addition to the light/dark cycle controlled by the circadian rhythm. With Drs. Oum Hassani and Maan Gee ...

Sea bed provides information about present climatic change

... present In this process, which involves a better knowledge of carbon cycle in the sea, David Gallego Torres developed the research work "Acumulacin ... matter in marine sediments (sapropels), its implications in the carbon cycle and, consequently, in the climatic variation in the Mediterranean area and ...

Human beta cells can be easily induced to replicate, according to study in Diabetes

... Stimulation was further enhanced by increasing production of another cell cycle molecule called cyclin D1. Untreated human islets did not replicate. ... beta cells or stem cells, Dr. Stewart pointed out. He added that cell cycle replication molecules might also be targets for drugs that could ...

January-February GSA Bulletin media highlights

... South African Drilling Project. With a particular focus on the silica cycle and using field geology, petrography, and carbon isotopes, they have ... demonstrates mechanistically how an active Late Archean biological redox cycle of iron can explain the environmental, textural, mineralogical, ...

Dirty snow causes early runoff in Cascades, Rockies

... winter snowpacks to warm, shrink and warm some more. This continuous cycle sends snowmelt streaming down mountains as much as a month early, a new ... well as aggravate winter flooding and summer droughts." The soot-snow cycle starts when soot, a byproduct of burning fossil fuels, darkens snow it ...

AGU journal highlights -- Dec. 31, 2008

... rise over continental shelves significantly affected past global carbon cycle Since the Last Glacial Maximum (LGM; about 21,000 years ago) sea level ... that expanding shelf seas have significantly influenced the global carbon cycle via the continental shelf pump, with weaker pumping during times when ...

Study of placenta unexpectedly leads to cancer gene

... the cells that give rise to the placental tissues had undergone cell cycle arrest, and were trapped in a state of suspended growth. Next, researchers ... within the cell. This disruption leads to distinct problems in cell cycle progression and normal gene replication. ...
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