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Tear in Biological News

Spallation Neutron Source sees first target replacement

... a force comparable to bursts from a large-caliber machine gun, "spalling" neutrons from the circulating mercury inside. Eventually, the wear and tear of those forces were expected over time to damage the stainless steel of the target and render it unusable. The target is modular: It can be changed ...

Knee injuries may start with strain on the brain, not the muscles

... and 13 women after working the legs to fatigue. While both men and women suffer an epidemic of ACL injuries, women are two to eight times likelier to tear this ligament than men while playing the same sport. However, the study showed that men and women showed significant changes in lower limb mechanics ...

Short stressful events may improve working memory

... BUFFALO, N.Y. -- Experiencing chronic stress day after day can produce wear and tear on the body physically and mentally, and can have a detrimental effect on learning and emotion. However, acute stress -- a short stressful incident ...

Pre-pregnancy depressed mood may heighten risk for premature birth

... socioeconomic and political factors. "What some people experience by being black takes a toll on the physiological system, and over time wear and tear that occurs across neural, neuroendocrine and immune systems as a result of chronic exposure to stressors lead to health disparities for blacks. ...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

... 10) REVERSING TIME TO SPOT CRACKS IN GAS PIPES Checking natural gas pipelines for wear and tear costs big bucks. Sections of pipe must be manually exhumed to be tested for cracks or corrosion with acoustic or magnetic scanners. Nicholas ...

Genes identified that are linked to spinal disc degeneration

... 10-year international twin-spine study proved that disc degeneration is affected largely by genetics. "For years it has been thought that wear and tear was the main cause," said Crites-Battie. The U of A researchers have made huge strides in the field and are determined to put an end to ...

Commercial ships spew half as much particulate pollution as world's cars

... particles, the earlier study found, depend on the operating speed of the engine and the amount of lubricating oil needed to deal with wear and tear from burning less-refined fuels. "Fortunately, engines burning 'cleaner,' low-sulfur fuels tend to require less complex lubricants. So the sulfur ...

No longer a gray area: Our hair bleaches itself as we grow older

... ( http://www.fasebj.org ) that wisdom has nothing to do with it. Going gray is caused by a massive build up of hydrogen peroxide due to wear and tear of our hair follicles. The peroxide winds up blocking the normal synthesis of melanin, our hair's natural pigment. "Not only blondes change their ...

The physics of star-forming clouds and the urban environment

... . THE PHYSICS OF HUMAN TEARS "We present recent progress in the understanding of the dynamics of the human tear film on the complex eye-shaped ... http://meetings.aps.org/Meeting/DFD08/Event/90651 . ANATOMY OF A SPLASH "The impact of a drop ...

Urban trees enhance water infiltration

... and the subsoil within two years. "Although we observed many roots penetrating the geotextile, roots really proliferated where there was a slight tear in the fabric," said Susan Day, the project's lead investigator. "Manipulating root penetration through these separation geotextiles could ...

The role of stem cells in renewing the cornea

... of the Journal Nature that shows how the cornea uses stem cells to repair itself. Using mouse models they demonstrate that everyday wear and tear on the cornea is repaired from stem cells residing in the corneal epithelium, and that more serious repair jobs require the involvement of other stem ...

America's smallest dinosaur uncovered

... Philip Currie describe the specimen and explain how it it likely specialized in consuming termites by using its small but powerful forelimbs to tear into logs. "Proportionately, the forelimbs are shorter than in a Tyrannosaurus but they are powerfully-built, so they seem to have served a ...

Athletes' 'sweat and tears' linked to asthma

... those who were responsive. Additionally, a significant correlation was found between sweat secretion and unstimulated salivary gland flow rates and tear secretion. "There were many Olympic hopefuls whose competitive chances were potentially limited by exercise-induced asthma," said Dr. Lockette. ...

Genes may make some people more prone to anxiety

... more dopamine in the prefrontal cortex could result in an "inflexible attentional focus" on unpleasant stimuli, meaning that Met158 carriers can't tear themselves away from something that's arousing -- even if it's bad. The Met158 allele was created by a relatively recent mutation and only in the ...

Study reveals air pollution is causing widespread and serious impacts to ecosystems

... efforts, consider the alternative. The fishless lakes of the Adirondacks are a harsh reminder that air pollution does not recognize property lines. tear concludes, "In the absence of critical loads, there is a false security in conventional land conservation. We can manage natural areas with the best ...

A tall story: New research adds to growing body of knowledge of genetics of height

... on or off. One locus in particular is also implicated in osteoarthritis, the most common form of arthritis involving the effects of wear and tear on the bodys structures. This locus reinforces a similar link identified by a previous study, and may be involved in the growth of cartilage. ...

March GEOLOGY and GSA TODAY media highlights

... the west that is subducting at a shallow angle with the overlying Yakutat terrane. The Great Alaskan earthquake, M 9.2, of 1964, nucleated near this tear and ruptured southwestward along the upper interface of the subducting Yakutat terrane. GSA TODAY Science Article The mystery of the ...

Cells get sprayed

... has now developed a methodology that could provide an alternative: They bombard the cells with tiny electrically charged water droplets. The droplets tear tiny holes in the cell membranes, through which external DNA molecules can enter. After about one minute, the holes have closed back up and even ...

Researchers: No faking it, crocodile tears are real

... early last century, decided to try to determine if the myth was true by rubbing onion and salt into crocodiles eyes. Shaner said. When they didnt tear up, he wrongly concluded it was false. As Shaner said, The problem with those experiments was that he did not examine them when they were eating. He ...

Tears reveal some of their deepest secrets to researchers

... tears. What we think of as tears, scientists call tear film, which is made up of three distinct, ... "The lack of certain compounds in the tear film may result in a number of different ... "The amount of oleamide and related lipids in tear film may be related to these disorders." Dry ...

Cartilage discovery offers arthritis hope

... disease osteoarthritis might one day be treated. The disease, which affects more than five million people in the UK, is caused by the wear and tear of the smooth, hard cartilage tissue that covers the ends of bones allowing them to glide over one another at the joint. Scientists have long ...

Fast-freeze snapshot yields new picture of nerve-muscle junction

... causing synaptic components to get misplaced and synapses to take on a wrinkly appearance. While slow freezing can create ice crystals that tear cell structures apart, the high-pressure technique, using liquid nitrogen to flash-freeze at minus-180 degrees Celsius, makes ice appear like liquid ...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

... not been biologically treated. Another benefit came in the form of a 35% improvement in the paper's mechanical characteristics (tensile strength and tear resistance) without appreciable loss of material. The results as a whole emphasize the potential for applications of this bioprocess in the ...

New engineered drug may offer prolonged arthritis relief

... population continues to rise, the incidence of osteoarthritis will increase. Osteoarthritis had been attributed primarily to the gradual wear and tear of joint surfaces. More recently, however, scientists have discovered that inflammation sparked by the immune system also plays an important role in ...

For crickets, parasitic flies can stop the music

... their songs but also parasitic flies. The uninvited guests then deposit larvae that burrow into their amorous hosts, grow for about a week and then tear their way out in "Alien" fashion, killing the cricket as they emerge. Now, University of Florida zoologists have found that the danger posed by ...

PNAS study reveals why organs fail following massive trauma

... it can begin. Without the normal transition, the innate system continues to pump out toxic chemicals (cytokines) and molecules (free radicals) that tear at organs until they fail. The goal of the current study was to identify the few genes and proteins that play a central role in T-cell mediated ...

Expert dispels bird flu paranoia

... have access to the same water as wild waterbirds. Be alert for bird flu symptoms in poultry such as coughing, sneezing, noisy breathing, increased tear production, swollen sinuses and head, decreased egg production, diarrhoea, convulsions, head arched backwards, unable to fly or walk properly, facial ...

Caloric restriction won't dramatically extend life span in humans: UCLA research

... its body weight in offspring every month and a half. If humans shut off reproduction by severely limiting calories, "our reduction in wear and tear on the body is minimal," he said. The rodents placed on severely restricted diets bit people who tried to hold them, and had an unpleasant ...

UCSD medical/bioengineering reseachers show titanium debris satobtage artificial joints

... and the Jacobs School of Engineering. The team demonstrated that titanium implants are safe in large blocks, but at the microscopic level, wear and tear can generate micrometer-sized particles. "As replacement joints are becoming increasingly common in aging populations, our results explain how ...

Heart repair gets new muscle

... Some organs in the human body deal with injury better than others. A flesh wound or muscle tear might hurt, but, assuming you are otherwise healthy, both will heal. The prognosis for a heart attack, on the other hand, is not so clear-cut. It ...
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(Date:9/18/2014)... tropical rabbitfish which have devastated algal forests in the ... entire Mediterranean basin if their distribution continues to expand ... study, by an international team of researchers led by ... Tomas of the Mediterranean Institute for Advanced Studies in ... ., Members of the team surveyed more than 1000 ...
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