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Tag: "height" at biology news

St. Jude study solves mystery of mammalian ears

...ian outer hair cells is simply a way to change the height of the cilia in the fluid to maximize the force with which the cilia oscillate. That, in turn, would amplify the sound. An opposing group of scientists maintains that although the vibration of the outer hair cell body itself—somatic motility—does max...

Researchers demonstrate way to control tree height

...ification to successfully manipulate the growth in height of trees, showing that it’s possible to create min...ew inches. This is a “proof of concept” that tree height can be readily controlled by genetic engineering techniques. It opens the door to a wide variety of ...

Rapid response was crucial to containing the 1918 flu pandemic

...pharmaceutical interventions were effective at the height of the pandemic can inform pandemic planners today, the authors of both studies say. In particular, the two studies lend weight to guidance that the Centers for Disease Control and Prevention recently released on the use of nonpharmaceutical interven...

BMI not accurate indicator of body fat

... equation: A person's weight divided by his or her height squared. Generally a BMI of 25 or above indicates ...research, Ode and Pivarnik used carefully measured height and weight to calculate BMI in more than 400 college-age people. They then used a standard method of...

World's largest flower evolved from family of much tinier blooms

...man would end up some 146 meters tall, roughly the height of the Great Pyramid of Giza. Because rafflesia lacks the genes most commonly used to trace plant ancestry, the scientists delved deeper into the genome, looking at some 11,500 base pairs of DNA to determine that the giant flower's closest relative...

Mystery of fossilized trees is solved

...cimens show that they reached at least 8 metres in height and formed the first known forests on earth. Dr Berry, of Cardiff's School of Earth, Ocean and Planetary Sciences, said: "This is a spectacular find, which has allowed us to recreate these early forest ecosystems. Branches from the trees would hav...

Swell gel could bring relief to back pain sufferers

...e load-bearing tissue of the disc, decreasing disc height and resulting in pain. The microgel particles the research team have developed are like 'smart sponges' when dispersed in water. The material is a fluid at a low pH - in other words, a low level of acidity - and can be injected through a syring...

Surgeons with video game skill appear to perform better in simulated surgery skills course

...rted playing more than three hours per week at the height of their video game playing. "Surgeons who had played video games in the past for more than three hours per week made 37 percent fewer errors [in the Top Gun course], were 27 percent faster and scored 42 percent better overall than surgeons who neve...

How to manage forests in hurricane impact zones

...age potential suggests that stand spacing and tree height can be manipulated to reduce risk, and provides a start for managing forests for hurricane risk," says Stanturf. "Additional research is needed on the effects on vulnerability of fragmentation, harvest systems, and other aspects of stand structure."...

Satellites shed light on global warming

...roof of their existence by mapping the sea surface height and seeing them move by following the measurements of the surface. Radar altimeters work by sending thousands of separate radar pulses down to Earth per second then recording how long their echoes take to bounce back to the satellite platform. Th...

Radiologists attempt to solve mystery of Tut's demise

...'s age at death to be between 18 and 20 years. His height was 180 centimeters or approximately 5 feet 11 inches. The researchers discovered a possible premortem fracture to the femoral (thigh) bone. While they cannot assess how the injury occurred, the findings suggest that the injury may have been an open ...

Winning by a neck -- Giraffes avoid competing with shorter browsers

... generally feed high in the tree canopy, above the height other herbivores can reach. Giraffes receive more leaves per bite by foraging high in the tree, but it's unclear whether this is caused by competition -- smaller browsers eating some of the leaves at lower heights -- or if more leaves grow at higher...

Obesity levels in US are grossly underestimated

...ES), which does in-person interviews and follow-up height and weight measurements on people who agree to a c...fy the level of bias when people self-report their height and weight, especially in a telephone interview. Based on this new understanding of the survey dat...

Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study

...g dormant seasons may allow growers to control the height of grasses, trees or other plants, thereby eliminating the need to constantly manicure gardens. Based on earlier studies, the Salk researchers had developed a model that explained what happens inside a plant cell when brassinolide signals a plant c...

Salk scientists untangle steroid hormone signaling in plants

...g dormant seasons may allow growers to control the height of grasses, trees or other plants, thereby eliminating the need to constantly manicure gardens. Based on earlier studies, the Salk researchers had developed a model that explained what happens inside a plant cell when brassinolide signals a plant c...

No-mow grass may be coming to your yard soon

... has served plants well, helping them adjust their height and size to fit the growing conditions of any environmental niche. Through traditional methods of plant breeding, humans have been manipulating plant stature for thousands of years. In recent years, through the methods of genetic engineering, more ...

Higher levels of obesity associated with greater health risks

...MI is calculated as weight in kilograms divided by height in meters squared. However, three categories of obesity are defined: obesity 1 (30-34.9); obesity 2 (35-39.9); and extreme obesity (40 and greater). (A 5'4" person would have a BMI of 40 if they weighed 233 lbs). The latter 2 categories, sometimes te...

Today's babies are fatter babies

...10 percent, a 59 percent jump (based on weight and height measures documented in medical records). The proportion of children at risk of becoming overweight grew from 11.1 percent to 14.4 percent overall, a 30 percent jump. Infants from birth to six months of age, an age group seldom studied before, had ...

Even when faint, ovary scent draws sperm cells

...can be regulated simply by raising or lowering the height of the source medium, in this case a buffer solution. The researchers affixed a microscope and camera to the device and then recorded video of the sperm during assays. "We combined in a microfluidic device the ability to generate a chemical gradien...

Discovery may speed forest biotechnology

...t survive need to focus their energy on growth and height in order to compete for sunlight with other trees, and only later in their life do they divert energy to produce seed." Strauss noted that for the same reasons, any releases of such early-flowering genes into wild populations are very unlikely to be...

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(Date:4/17/2014)... warning on the possible effects of gases such as ... that of carbon dioxide. Now a team of Swiss-German ... regenerable electron acceptors which helps explain why large amount ... released to the atmosphere. However, there are worries that ... a vicious cycle to release large amounts of methane ...
(Date:4/17/2014)... the genetic information of DNA is used to ... numerous different functions in living organisms. Messenger RNA ... expression, by relating the genetic information of DNA ... , By examining the different types and ... at a given time, researchers can determine which ...
(Date:4/17/2014)... uncovered a new way the immune system may fight ... to use immune cells to treat illness. , The ... immunological equivalent of "neighborhood police" specialized squads of ... instead of an entire city, the body. , Scientists ... have shown that the liver, skin and uterus each ...
Breaking Biology News(10 mins):Methane climate change risk suggested by proof of redox cycling of humic substances 2Rapid and accurate mRNA detection in plant tissues 2Some immune cells defend only 1 organ 2
(Date:4/17/2014)... Hospital Pediatrician-in-Chief Jon McCullers, MD, was recently invited ... of Nature Reviews Microbiology , one of ... a world-renowned infectious disease specialist, and chair of ... Tennessee Health Science Center, analyzed the epidemiology and ... 1968 pandemics, as well as more recent 2009 ...
(Date:4/17/2014)... 10 million older Americans suffer from depression, often brought ... new research a project that followed the lives ... found that Internet use among the elderly can ... percent. , "That,s a very strong effect," said Shelia ... studies and media who led the project. "And it ...
(Date:4/17/2014)... BostonResearchers from Boston University School of Medicine (BUSM) ... alcohol consumption in an experimental model. The findings, ... and Alcohol Abuse , may lead to more ... alcohol is one of the leading causes of ... significant negative economic impact by limiting the productivity ...
(Date:4/17/2014)... Cesar A. Arias, M.D., Ph.D., at The University of ... a new superbug that caused a bloodstream infection in ... 17 issue of The New England Journal of ... a class of highly-resistant bacteria known as methicillin-resistant ... cause of hospital and community-associated infections. The superbug has ...
(Date:4/17/2014)... blood flow and alleviates muscle soreness after exercise, ... University of Illinois at Chicago. , The study, ... Archives of Physical Medicine and Rehabilitation , ... people who had not exercised, suggesting that massage ... of physical activity. , Improved circulation and relief ...
Breaking Medicine News(10 mins):Health News:Internet use can help ward off depression among elderly 2Health News:BUSM researchers find anti-seizure drug may reduce alcohol consumption 2Health News:New MRSA superbug emerges in Brazil 2Health News:Massage therapy improves circulation, eases muscle soreness 2
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