Tag: "peak" at biology news

Extreme stretch-growth of axons

...nd in a giraffe's neck at two centimeters a day at peak growth." The team also found that they had to condition the axons to grow in an extreme way. "Although they can handle enormous growth, you can't just spring it on them," explains Bryan Pfister, PhD a post-doctoral fellow in Smith's lab and coautho...

Rising childhood leukaemia incidence prompts conference

...ue to more children surviving infancy to reach the peak age of leukaemia incidence (1-4 years) and to improved registration and diagnosis of the disease, may be partly true, but they cannot plausibly explain the overall pattern of data now at our disposal," said Professor Coleman. It is the worrying upwa...

Highlights of American Chemical Society national meeting in Philadelphia, Aug. 22-26

...niversity, predicts that world oil production will peak on Thanksgiving Day, 2005, and production rates will subsequently fall. As he argues in his book, "Hubbert's Peak: The Impending World Oil Shortage," this decline could spur a global economic crisis, the likes of which the world has never seen. Deffe...

Got the time?

... in samples from mouse liver, and calculated their peak expression times in terms of both external time an...ed into a kind of daily schedule by their times of peak expression some were expressed most highly at daybreak, some at dusk, some at other time-points thr...

T. rex owes its giant size to the ultimate teenage growth spurt

...y of Nature Thursday, Aug. 12, 2004. During the peak in its growth spurt, T. rex gained 2.1 kilograms (4.6 pounds) per day, developing into a more than 5,000-kilogram (11,000-pound) giant, one of the largest terrestrial carnivorous animals ever. "Knowing the lifeline is important because we now unders...

Growing pains: T. Rex was teenage giant

...ccording to FSU biologist Gregory Erickson. At the peak of this spurt, T. rex grew more than 4.5 pounds a day. Erickson and his team of paleontologists are the first to establish an accurate picture of how T. rex accelerated its growth over a relatively few years to become gargantuan while earli...

Preschool bolsters early childhood immunity, reduces risk of young adult Hodgkin's lymphoma

...ence profile. In developed countries, the initial peak occurs among young adults aged 15 to 39, and the second peak from the mid-50s onward. Our study found no significant association between preschool attendance an...

How wounds heal Clues from flies

...ar cell signaling pathway was activated during the peak hours of wound healing. Inhibiting the pathway in fly mutants had dramatic effects on the wound-healing process. The early stages of healing--including plug and scab formation--weren't affected, but epidermal spreading to regenerate the intact epider...

When sun's too strong, plankton make clouds

...ht are high, plankton create more DMS. DMS levels peak from June through the end of September. During the season, the study found that a whopping 77 percent of the changes in amounts of DMS were due to exposure to UV radiation. The researchers found it amazing that a single factor could have such a big a...

Endurance exercise found to be equally effective as diuretics in improving cardiac health

...Endurance exercise training induced a 15% increase peak in aerobic power and consisted of increased time on a treadmill with increases in grade 2 percent every 2 minutes until exhaustion or development of symptoms or signs including ECG changes that were considered unsafe to continue. Blood pressure, chol...

New version of premier global climate model released

...to study climate patterns of the past, such as the peak of the last ice age 21,000 years ago. They will also use it to probe chemical processes and the cycling of carbon between the atmosphere, ocean, and land, as well as the localized impacts of sulfates and other pollutants on climate. ...

UK researchers develop way of predicting a woman's 'reproductive' age

... which form in the fourth month of pregnancy. They peak at several million in the five-month foetus then start to decline. By birth, this number has already fallen significantly and the decline continues relentlessly. When the number reaches around 25,000 (corresponding to an average age of 37 years) the ...

Existing drug may prevent brain injury and seizures in newborns

...showed that developing human oligodendrocytes have peak numbers of AMPA glutamate receptors at 23-32 weeks' gestation, the time of greatest risk for PVL. They then tested topiramate, which blocks AMPA glutamate receptors, in a rodent model for PVL. When topiramate was given immediately after a hypoxic-i...

New research shows that the seasons may be involved in onset of menopause

...of the menopause. "We found that there was a high peak after the spring equinox and another, lower one, after the autumn equinox," said research leader Dr Jnos Garai. Of the 102 women whose questionnaires were analysed, 72 remembered the exact month that their menstrual periods stopped, while 30 could r...

Physics tip sheet #42

...s been believed to travel at the same speed as the peak of the pulse (known as the group velocity), at least in media where light propagates more slowly than the speed of light in a vacuum, c. But now researchers have found that in some cases information can in fact travel much faster than the group veloc...

Mysterious beach closures may be linked to contaminated groundwater, study finds

... in a typical summer. But in July 1999, during the peak season, health authorities closed several miles of beachfront after lab tests found unacceptably high concentrations of bacteria associated with fecal contamination. The shutdown, which lasted about two months, angered many residents and business own...

MBL researcher and science teacher visit Siberia to study climate, excite children about science

..., and other samples from the Lena River during the peak flow season on the river. Soon TREC matched up Holmes and Clapp, and the PARTNERS project became an educational outreach vehicle. Funded by NSF's Arctic Systems Program, PARTNERS is a comprehensive international effort among American, Russian, and ...

U of T study finds music teachers at risk of hearing loss

...rs from 15 Toronto high schools and found that the peak noise level exceeded 85 dB for 78 per cent of the teachers. During an average eight-hour exposure, the team determined that 39 per cent of the teachers faced potentially harmful noise levels. Most of the classrooms are constructed with concrete block...

Archaeologists announce discoveries at the ancient Maya site of Waka' in northern Guatemala

... was inhabited as early as 500 BC, but reached its peak between AD 400 and AD 800. At its height, the city may have been an economically and strategically important center, and home to tens of thousands of people. Over a period of 700 years, 22 kings ruled at Waka'. "We know a great deal about the ancie...

Into the dead zone: Galveston researcher examines loss of marine life

...ound in fertilizers are currently there. Spring is peak fertilizing time for many farmers and ranchers all along the Mississippi River, meaning the suspected runoff of these chemicals into the Gulf Coast area will be reaching a climax in the weeks ahead. "We will look at the nutrients in the water in the ...

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(Date:7/24/2014)... 24, 2014 National Analysts Worldwide, the ... it will operate globally under the name, NAXION ... woman-owned Employee Stock Ownership Plan (ESOP) organization led by ... Ph.D . The firm guides market strategy in ... , Said McDonald, “We wanted our name to ...
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(Date:7/24/2014)... (PRWEB) July 24, 2014 The North American ... $1.6 billion in 2014, and is expected to register a ... U.S. has been the biggest market for the air and ... the U.S. market has witnessed budget cuts as well. , ... missile defense radar market report, to get an idea of ...
(Date:7/24/2014)... Toronto - Aristotle said, "Love is composed of a ... thinking that you and your partner were made in ... a new study. , Psychologists observe that people ... but underlying such diversity are some common themes that ... popular frame considers love as perfect unity ("made for ...
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