peak

Another Look Finds Promising Proteomics Test is Not Biologically Plausible

...atio) is recorded to produce a protein spectrum. A peak in the graph of the spectrum represents a protein (the identity of which is often unknown). The goal is to find a pattern of peaks that will distinguish between patients with cancer and those who are cancer-free. The authors of the Lancet study have...

New species from old data

...atio) is recorded to produce a protein spectrum. A peak in the graph of the spectrum represents a protein (the identity of which is often unknown). The goal is to find a pattern of peaks that will distinguish between patients with cancer and those who are cancer-free. The authors of the Lancet study have...

Cracking the olfactory code in bees

...atio) is recorded to produce a protein spectrum. A peak in the graph of the spectrum represents a protein (the identity of which is often unknown). The goal is to find a pattern of peaks that will distinguish between patients with cancer and those who are cancer-free. The authors of the Lancet study have...

Signaling protein builds bigger, better bones in mice

...atio) is recorded to produce a protein spectrum. A peak in the graph of the spectrum represents a protein (the identity of which is often unknown). The goal is to find a pattern of peaks that will distinguish between patients with cancer and those who are cancer-free. The authors of the Lancet study have...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...ulate seasonal flooding. A lower and shorter flood peak in the Cuiabá River, however, could have profound ecological impacts in the northern Pantanal. "Inter-linkages approach" needed to manage the Pantanal The complex interconnections and inter-linkages at the ecological level ?as for example, between ...

Increased risk of osteoporosis associated with gene that one in five people have

...In that case, they would never achieve an adequate peak bone density and would lose even more bone mass after menopause. If we can catch them at an early age, we can maximize their chances to avoid osteoporosis." ...

Agilent Technologies new genome analysis technology set to accelerate Australia fight against mesothelioma

...e tripled in the past 20 years and are expected to peak about 2010. Diagnosis of this type of cancer is difficult, and patients are often not identified until the condition is quite advanced. Agilent's new microarray techniques in comparative genomic hybridization (CGH) will allow researchers to rapidly ...

Scientists discover global pattern of big fish diversity in open oceans

...d supply such as zooplankton and small fish. "The peak in big fish diversity is at middle temperatures," says Myers. "Like Goldilocks and the three bears- ocean animals don't like it too hot, or too cold, they like it just right." For these predatory fish, 22 degrees C (77 degrees F) seems to be the opti...

Late peak may have prevented severe flu season from becoming worse

...ing provider of healthcare information. This later peak may have prevented the most recent flu season from...e to an unusual shortage of flu vaccine, the later peak of the 2004-2005 flu season may have been beneficial, allowing public health officials more time to ...

Purdue scientists may have found key to halting spinal cord damage

...jury," Shi said. "We found that levels of acrolein peak 24 hours afterward, and they remain high for at least a week. Because acrolein has such a long lifespan and is so toxic, we theorize that it is primarily responsible for the secondary damage that keeps injured spines from healing." Acrolein's involv...

A novel virus for croup

...elative susceptibility of boys to the disease, its peak occurrence in the second year of life and its predominance in late autumn and earlier winter, that are matched by patterns of HCoV-NL63 occurrence. This systematic association of croup with HCoV-NL63 is particularly timely as the newly identified v...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...e maintained (ie. from 26 to 51 minutes). Although peak oxygen uptake was not increased, aerobic adaptations did occur within active skeletal muscle as reflected by a 38% increase in activity of the mitochondrial enzyme citrate synthase," Coyle noted. Mechanisms of physiological changes need further stud...

Beauty queens urge girls not to sacrifice their bones

...s and boys roughly between ages 11-17. By building peak bone mass during this period, young people "invest in their bones" and reduce the risk of fracture later in life, noted Professor Ghassan Maalouf, an IOF Board member from Lebanon who spoke about the importance of proper diet (including adequate calc...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...ize allows larvae to hatch at the safest time, the peak outward nighttime flow of the biweekly tidal cycle...o cause the larvae to hatch too early and miss the peak tides. This research provides one of the first examples of how choosy resource selection can help of...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...ummer. "Meteorology also plays a role. There is a peak before Christmas: this is not because industrial activity, domestic heating or transportation is suddenly reduced after the holiday season but because there is an eastward outflow of air that was previously revolving around Asia. This is the same typ...

2005 AIDS figures released by WHO and UNAIDS

...l adult infection rates decreasing in Kenya from a peak of 10% in the late 1990s to 7% in 2003 and evidence of drops in HIV rates among pregnant women in Zimbabwe from 26% in 2003 to 21% in 2004. In urban areas of Burkina Faso prevalence among young pregnant women declined from around 4% in 2001 to just u...

Earliest European Farmers Left Little Genetic Mark On Modern Europe

...l adult infection rates decreasing in Kenya from a peak of 10% in the late 1990s to 7% in 2003 and evidence of drops in HIV rates among pregnant women in Zimbabwe from 26% in 2003 to 21% in 2004. In urban areas of Burkina Faso prevalence among young pregnant women declined from around 4% in 2001 to just u...

Some good news for the world's poor

...lowest in 20 years, and was only 63 percent of its peak of $51.6 million (measured in 2000 prices) in 1990." IRRI Director General Dr. Zeigler said that, unfortunately, this trend has continued until this year. "In 2005, IRRI continued to receive cuts in donor funding. We hope that this new research will...

NASA's AURA satellite peers into Earth's ozone hole

...zone hole measured 9.4 million square miles at its peak between September and mid-October, which was slightly larger than last year's peak. The size of the ozone hole in 1998, the largest ever recorded, averaged 10.1 million square miles. For 10 of the past 12 years, the Antarctic ozone hole has been larg...

Cortex matures faster in youth with highest IQ

...ickens more rapidly during childhood, reaching its peak later than in their peers ?perhaps reflecting a longer developmental window for high-level thinking circuitry. It also thins faster during the late teens, likely due to the withering of unused neural connections as the brain streamlines its operation...

Hooked on fishing, and we're heading for the bottom, says scientist

... has revealed that the world passed "peak fish" ?a peak in the biomass, or weight, of fish caught from the...While global catches peaked in the late 1980s, the peak occurred earlier in those parts of the world where industrial fishing developed first. Thus, peak fi...

Georgia Tech accelerates drug discovery with new IBM supercomputing cluster

...y Officer. The new supercomputer, capable of a peak performance of more than 16 TeraFlops, consists of a cluster of 1,000 AMD Opteron processor-based LS20 nodes for IBM BladeCenter systems (total of 4,000 core processors) running Red Hat Linux 4 on the infrastructure nodes and Scientific Linux on the ...

Viral 'fitness' explains different resistance patterns to aids drugs

...ted protease inhibitors (PI) do not experience the peak risk of PI-resistant HIV developing unless they are taking most of their PIs but fall just short of full viral suppression." The researchers found that NNRTI-resistant virus has an advantage over sensitive virus even at very low levels of adherence...

Scientists develop malaria forecasting tool to predict disease risk

...of an epidemic up to five months in advance of the peak malaria season ?the earliest point at which predictions have ever been made. The model will assist doctors and health care providers in preventing and controlling the disease. Malaria is one of the world's deadliest diseases, killing more than on...

Restoring seagrass beds: Is it for the birds?

... the habitats around Robinson Island back to their peak condition," he concluded. ...

Bacteria beat the heat

...d remained steady thereafter. For each enzyme, the peak occurred in the bacteria's "comfort zone." Further comparisons of the enzymes, which were nearly identical, turned up differences in just two of the hundreds of amino acids making up the enzyme sequence. When the scientists replaced these two amino a...

Food-crop yields in future greenhouse-gas conditions lower than expected

...ytime ozone levels during the growing season could peak on average at 80 parts per billion (now 60 parts per billion). Older studies, as reviewed by the Intergovernmental Panel on Climate Change, suggest that increased soil temperature and decreased soil moisture, which would reduce crop yields, likely w...

Matrilin-3 gene discovered to prevent onset of osteoarthritis

...8 weeks of age, the time when mice typically reach peak bone density. Clinical studies in humans have shown that the prevalence of knee and hip osteoarthritis increases with increasing BMD. "Our study reveals an unexpected property of matrilin-3 in maintaining proper BMD, a factor that was not previousl...

Internal body clock dictates timing of different types of stroke

...lysis showed that cerebral infarction had a higher peak in the morning and a lower peak in the afternoon than the other two. Intracerebral haemorrhage and subarachnoid haemorrhage, on t...

New research promising for improving brain cell survival after brain injury

...been published by the Journal of Neuroscience, the peak body journal of the American Society for Neuroscience. "Now our challenge is to understand how BP5 performs it neuron-savingfunction and develop drugs that can do the same thing," Prof Tan said. "Ultimately, we want to deliver the drug to patie...

Beaver dams create healthy downstream ecosystems

...s greatly enhanced hydrologic processes during the peak flow and low flow periods, suggesting that beaver can create and maintain environments suitable for the formation and persistence of wetlands." The study comes as the beaver population in Rocky Mountain National Park is dwindling. Approximately 30 o...

Thermal imaging shatters arousal gender gap myth

...time it takes healthy young men and women to reach peak arousal," said Dr. Irv Binik, psychology professor and founder and director of the Sex and Couple Therapy Service of Royal Victoria Hospital, which is part of the McGill University Health Centre (MUHC). Thermal imaging, or thermography, is i...

Walking not enough for significant exercise benefits

...active traditional fitness regimen increased their peak oxygen uptake, an indicator of aerobic fitness, by 10 per cent. Those who took part in the walking program experienced a four per cent increase. Systolic blood pressure also dropped by 10 per cent for the traditional fitness group, compared to four p...

Reading Shakespeare has dramatic effect on human brain

...d within a sentence. This process causes a sudden peak in brain activity and forces the brain to work backwards in order to fully understand what Shakespeare is trying to say. Professor Philip Davis, from the University's School of English, said: "The brain reacts to reading a phrase such as ‘he godd...

Biofuel cells without the bio cells

...tite, dim; hematite, bright. How bright? "The peak current, or flux, doesn't run long, just a few seconds," Squier said, "but flux is at least as good as what you would find in the most efficient bioreactors, which rely on living bacteria." Biological fuel cells, or biofuel cells, are not yet power...

Air travel and flu: Post-9/11 restrictions delayed start of season

...ad across the country and the date of the national peak in flu deaths. They used government estimates of p...d the usual time taken for a flu epidemic to reach peak levels across the US was about two weeks, and that the national peak date was within two days of the...

Progress made in HIV vaccine development

...xplained Graham. "HIV-specific CD4 responses also peak early in infection; however this response diminishes soon after seroconversion. Maintenance of a functional HIV-specific CD4 T cell response correlates with long term non-progression of HIV disease." Harriet L. Robinson, PhD, from Emory University...

Global changes alter the timing of plant growth, scientists say

...udy also showed that plant growth--as evidenced by peak "greenness"--occurred earlier in the growing season when the grassland was exposed to warming, simulating future conditions. But plant growth was delayed by elevated carbon dioxide, consistent with the fact that grasses--which make up the majority ...

NASA satellite data helps assess the health of Florida's coral reef

...r in coral reef health. Bleaching events typically peak when waters reach their warmest levels, usually in late summer and early fall. Phenomena like El Niño have also been linked to declines in reef health. During the strong El Niño of 1998, about 30 percent of coral off the Florida Keys died after a sin...

Monoclonal antibody reduces exacerbations in asthmatics

...nt efficacy for the primary endpoint of monitoring peak expiratory flow (PEF), it did produce a significant decrease in the diurnal (during the day) variation in the PEF rate." (With PEF monitoring, patients take as deep as a breath as possible, then exhale as forcefully as possible into the mouthpiece o...

Volcanic eruptions, ancient global warming linked

...ing the ash layers deposited toward the end of the peak of the volcanic eruptions. Using chemical fingerpr...d about 300,000 years before the ash layer, at the peak of volcanic activity in east Greenland. The scientists speculate that massive release of greenhou...

New measure of sexual arousal found for both men and women

...rences between genders in the time needed to reach peak temperature. "Using thermography, we also found that women's subjective experience of sexual arousal corresponded with their physiological genital response; this challenges the common notion that women don't know their bodies," says Tuuli Kukkonen,...

Hay fever can send work productivity down the drain

...hat workers missed an hour of work per week during peak hay fever season. While missing an hour of work...the year-long study, most hours were missed during peak hay fever seasons ?namely spring and fall. In reality, this may result in missing a couple to severa...

New test for most virulent HPV strains under study

...en under 30 are another matter. Ages 15 to 25 are peak sexual activity years and peak years for HPV infection, says Dr. Ferris. Fortunately, the vast majority of the infections are clear...

Study shows hope for early diagnosis of Alzheimer's

...mentia, particularly Alzheimer’s, may exhibit that peak much later than 300 milliseconds, show a much weaker peak or have no peak at all, according to Polikar. Kounios said the P300 signal is generated by areas of ...

When your brain talks, your muscles don't always listen

...xerted just before you begin the upturn toward one peak and then it eases off again in the downturn toward a valley," Knight noted. Once recordings were completed at one site in the muscle, the electrode was repositioned to sample from other motor units within the muscle. Knight and graduate student...

Gut research yields new anti-cancer approach

...993, Taxol had annual sales of $1.6 billion at its peak in 2000. Unfortunately, Taxol and other standard, anti-tubulin drugs failed in colorectal cancer clinical trials. Gut tumor cells have evolved to include "efflux" proteins that recognize standard chemotherapies as foreign, and "pump them out" of t...

Rapid response was crucial to containing the 1918 flu pandemic

...days after the first local cases were recorded cut peak weekly death rates by up to half compared with cit... number of interventions applied and the resulting peak death rate seen. Perhaps more importantly, both studies showed that while interventions effectively ...

The quest for an effective HIV vaccine presents new possibilities, challenges

...ic tissues. Within weeks of exposure, virus levels peak and then decline to levels that may remain low for months or years. It is believed that CD8+ T cells--so-called killer T-cells--are responsible for this reduction in HIV levels; however, their ability to continue to suppress the virus declines over t...

Premature births may be linked to seasonal levels of pesticides and nitrates in surface water

...meeting, Dr Winchester reported that birth defects peak in Indiana and in the United States as a whole during April through July, the same months as pesticides and nitrates reach their maximum concentrations in surface water. This year's presentation expands upon that work. "A growing body of evidenc...