Scientists detect early warning signal for ecosystem collapse
2011-04-29
MADISON — Researchers eavesdropping on complex signals emanating from a remote Wisconsin lake have detected what they say is an unmistakable warning — a death knell — of the impending collapse of the lake's aquatic ecosystem.
The finding, reported today (April 29) in the journal Science by a team of researchers led by Stephen Carpenter, a limnologist at the University of Wisconsin-Madison, is the first experimental evidence that radical change in an ecosystem can be detected in advance, possibly in time to prevent ecological catastrophe.
"For a long time, ecologists ...
Being tall, obese may significantly increase risk of blood clots in deep veins
2011-04-29
Being tall and obese may increase your risk for potentially dangerous blood clots, according to new research in Arteriosclerosis, Thrombosis and Vascular Biology: Journal of the American Heart Association.
Obesity is a well-known risk factor for clots in deep veins (usually in the legs) and for pulmonary embolism, a clot in blood vessels of the lungs that can result in sudden death or strain on the heart. Together, the two conditions are called venous thromboembolism (VTE).
Compared with short (5 feet, 7.7 inches or less) and normal-weight men (body mass index < 25kg/m2), ...
Mystery solved: How sickle hemoglobin protects against malaria
2011-04-29
The latest issue of the journal Cell* carries an article that is likely to help solve one of the long-standing mysteries of biomedicine. In a study that challenges currently held views, researchers at the Instituto Gulbenkian de Ciência (IGC), in Portugal, unravel the molecular mechanism whereby sickle cell hemoglobin confers a survival advantage against malaria, the disease caused by Plasmodium infection. These findings, by the research team lead by Miguel P. Soares, open the way to new therapeutic interventions against malaria, a disease that continues to inflict tremendous ...
Wordpress Training for the UK -- Aperio Training Now Provides the UK's Best Wordpress Training
2011-04-29
For the past seven years Aperio Training and Education systems has been providing quality accredited SEO training and Wordpress Training for over 3,500 students across the USA and Canada. Now with their even popular advanced Wordpress training now offered through their live 100% online class room portal is being offered to the UK.
If you've ever wanted to master wordpress, Aperio's training guarantees they can help you master Wordpress in a mere few hours, NOT DAYS! Discover what this powerful Wordpress Training can do for you and your business. Find out how to perform ...
Finding molecular targets of an HIV drug used in cancer therapy
2011-04-29
Researchers at the University of California, San Diego and Hunter College of the City University of New York (CUNY) have identified potential human molecular targets of the anti-HIV drug Nelfinavir, which may explain why the drug is also effective as a cancer therapy. Their study will be published in the online edition of PLoS Computational Biology on April 28.
Nelfinivir is a protease inhibitor that prevents replication of the HIV virus, but it has also been found to have a positive effect on a number of solid tumor types, and is currently in clinical trial as a cancer ...
Monkeys, too, can recollect what they've seen
2011-04-29
It's one thing to recognize your childhood home when you see it in a photograph and quite another to accurately describe or draw a picture of it based on your recollection of how it looked. A new report published online on April 28 in Current Biology, a Cell Press publication, offers some of the first clear evidence that monkeys, like humans, have the capacity for both forms of memory.
The researchers found that rhesus monkeys can flexibly recall extremely simple shapes from memory, as evidenced by their ability to reproduce those shapes on a computer touch screen. The ...
Our own status affects the way our brains respond to others
2011-04-29
Our own social status influences the way our brains respond to others of higher or lower rank, according to a new study reported online on April 28 in Current Biology, a Cell Press publication. People of higher subjective socioeconomic status show greater brain activity in response to other high-ranked individuals, while those with lower status have a greater response to other low-status individuals.
These differences register in a key component of the brain's value system, a region known as the ventral striatum.
"The way we interact with and behave around other people ...
Through unique eyes, box jellyfish look out to the world above the water
2011-04-29
Box jellyfish may seem like rather simple creatures, but in fact their visual system is anything but. They've got no fewer than 24 eyes of four different kinds. Now, researchers reporting online on April 28 in Current Biology, a Cell Press publication, have evidence revealing that four of those eyes always peer up out of the water, regardless of the way the rest of the animal is oriented. What's more, it appears that those eyes allow the jellies to navigate their way around the mangrove swamps in which they live.
"It is a surprise that a jellyfish—an animal normally considered ...
Antibiotic-resistant bacteria have evolved a unique chemical mechanism, new discovery reveals
2011-04-29
For the first time, scientists have been able to paint a detailed chemical picture of how a particular strain of bacteria has evolved to become resistant to antibiotics. The research is a key step toward designing compounds to prevent infections by recently evolved, drug-resistant "superbugs" that often are found in hospitals, as well as in the general population. A paper describing the research, by a team led by Squire Booker, an associate professor in the department of chemistry and the department of biochemistry and molecular biology at Penn State University, will be ...
Long Island Pediatric Dentist Announces Grand Opening Special
2011-04-29
Come Orthodontics and Pediatric Dentistry, Long Island pediatric dentists, is pleased to announce the opening of their practice with special incentives for patients. With the opening of Come Orthodontics and Pediatric Dentistry, patients can receive a special promotion - $90 for an exam, cleaning and x-rays.
"We wanted to make the opening of our practice exciting and special for our patients. The special makes receiving dental care easy and affordable, paving way to a future of proper oral health care in our comfortable, state-of-the-art facility," said Dr. ...
The Unlock Club Provides Wholesale Unlock Codes For Over 8,000 Models
2011-04-29
The advanced BlackBerry Storm2 9550 is a smartphone with impressive features that will equip you to work more efficiently and to make the most of your leisure time.
The brilliant color on the large touch screen display with user-selectable font size is fantastic. The QWERTY keyboard operates in portrait or landscape mode. And the 3.2 megapixel camera with video capability, flash, zoom, auto focus, and image stabilization is also an exciting feature.
Users of the Blackberry Storm2 9550 claim that the touchscreen keyboard is simpler to type on than other touchscreen ...
Jump in communication skills led to species explosion in electric fishes
2011-04-29
AUDIO:
Amplified electric pulses were recorded at Biroudou Creek in southeastern Gabon. Each click represents a single electric-organ discharge, which is about one millisecond long. Several fish can be heard in...
Click here for more information.
Bruce Carlson stands next to a fish tank in his lab, holding a putty colored Radio Shack amplifier connected to two wires whose insulation has been stripped. At the bottom of the tank a nondescript little fish lurks in a sawed-off ...
Mutations in single gene may have shaped human cerebral cortex
2011-04-29
The size and shape of the human cerebral cortex, an evolutionary marvel responsible for everything from Shakespeare's poetry to the atomic bomb, are largely influenced by mutations in a single gene, according to a team of researchers led by the Yale School of Medicine and three other universities.
The findings, reported April 28 in the American Journal of Human Genetics, are based on a genetic analysis of in one Turkish family and two Pakistani families with offspring born with the most severe form of microcephaly. The children have brains just 10 percent of normal size. ...
Unlock Advantage Provides Simple Instructions With Requested Blackberry and Nokia Unlock Codes
2011-04-29
Unlock Advantage specializes in providing unlock phones along with hassle-free instructions. Whether your phone is a Nokia E7, a Blackberry Style 9670, or any other of hundreds of models, Unlock Advantage can help you get maximum benefit out of your cell phone.
Everything looks crystal clear on the high-quality 4" touch screen on your Nokia E7 cell phone. Some of your advanced mobile features on this sleek phone include real-time push e-mails with Mail For Exchange and effortless access to both your work and private e-mail accounts from the same view. You can also ...
Video captures cellular 'workhorses' in action
2011-04-29
VIDEO:
Thread-like actin filaments, strong as commercial plastic, are the muscular workhorses of our cells -- pushing on membranes to move cells to the proper location within tissues and applying pressure...
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Scientists at Yale University and in Grenoble France have succeeded in creating a movie showing the breakup of actin filaments, the thread-like structures inside cells that are crucial to their movement, maintenance and division.
Actin ...
BU researchers probe link between theta rhythm and ability of animals to track location
2011-04-29
In a paper to be published today [April 29, 2011] in the journal Science, a team of Boston University researchers under the direction of Michael Hasselmo, professor of psychology and director of Boston University's Computational Neurophysiology Laboratory, and Mark Brandon, a recent graduate of the Graduate Program for Neuroscience at Boston University, present findings that support the hypothesis that spatial coding by grid cells requires theta rhythm oscillations, and dissociates the mechanisms underlying the generation of entorhinal grid cell periodicity and head-direction ...
LeFluer Transportation Engages Compliance Safety Systems Driver File Services
2011-04-29
Compliance Safety Systems announced today that the LeFluer Transportation Corp. of Ridgeland, Mississippi has engaged the services of Compliance Safety Systems for their Electronic Driver File capabilities. This new relationship will allow LeFluer Transportation Corp. to take advantage of creating a paperless driver file record keeping process that Compliance Safety Systems, (CSS), provides for employers. LeFluer Transportation is moving to electronic employee files to help them to have better control and review of these documents from remote locations.
About LeFluer ...
Fluctuations before the fall: Predicting and preventing environmental collapse
2011-04-29
(Millbrook, N.Y.) By closely monitoring environmental conditions at a remote Wisconsin lake, researchers have found that models used to assess catastrophic changes in economic and medical systems can also predict environmental collapse. Stock market crashes, epileptic seizures, and ecological breakdowns are all preceded by a measurable increase in variance—be it fluctuations in brain waves, the Dow Jones index, or, in the case of the Wisconsin lake, chlorophyll.
In a paper published this week in the journal Science, a team of ecologists is the first to show that by paying ...
Precise Air Systems, Inc. Has Been Providing Services for HVAC in Los Angeles Since 1975 and Offers Tips for Running Your Air Conditioner Efficiently
2011-04-29
When the temperatures heat up dramatically, the air conditioner runs nonstop, putting a huge burden on the cooling system. It could help save money on energy costs and reduce your need for air conditioning repair in Los Angeles if you run your air conditioner efficiently. Precise Air Systems, Inc. provides helpful tips:
- Set your thermostat at 78 degree Fahrenheit and leave it there. Moving the thermostat to a lower temperature setting won't get your home to 78 degree any faster.
- Keep your blinds and curtains closed to keep the direct rays of the sun from entering ...
Clinical trial recommends new antibiotic for treating typhoid in low income countries
2011-04-29
A large clinical trial comparing treatments for typhoid has recommended the use of gatifloxacin, a new generation and affordable antibiotic. The results of the trial in Kathmandu, Nepal, funded by the Wellcome Trust and the Li Ka Shing Foundation, are published today in the Lancet Infectious Diseases.
Typhoid – also known as 'enteric fever' – is characterised by a high fever and diarrhoea. It is transmitted through the ingestion of food or drink contaminated by the faeces or urine of infected people. It causes an estimated 26 million infections each year and over 200,000 ...
Concern over 'excessive' doses of thyroid drugs for older patients
2011-04-29
Many older adults may be taking "excessive" doses of drugs for thyroid problems which can lead to an increased risk of fractures, finds a study published on bmj.com today.
The study raises concern that treatment targets may need to be modified in the elderly and that regular dose monitoring remains essential even into older age.
Levothyroxine is a synthetic form of thyroxine (thyroid hormone) and is widely used to treat an underactive thyroid gland (hypothyroidism).
Most hypothyroid patients are diagnosed in early or middle adulthood but, as people age, their thyroxine ...
Electrical oscillations found to be critical for storing spatial memories in brain
2011-04-29
Biologists at UC San Diego have discovered that electrical oscillations in the brain, long thought to play a role in organizing cognitive functions such as memory, are critically important for the brain to store the information that allows us to navigate through our physical environment.
The scientists report in the April 29 issue of the journal Science that neurons called "grid cells" that create maps of the external environment in one portion of our brain require precisely timed electrical oscillations in order to function properly from another part of the brain that ...
Use of costly breast cancer therapy strongly influenced by reimbursement policy
2011-04-29
What Medicare would pay for and where a radiation oncologist practiced were two factors that strongly influenced the choice of intensity-modulated radiation therapy (IMRT) for treating breast cancer, according to an article published April 29 online in the Journal of the National Cancer Institute. The use of IMRT and the cost of radiation therapy increased sharply over the period of the study.
IMRT is a radiation delivery technique that modulates the radiation beams to conform to the shape of the tumor or tumor bed in an attempt to maximize the dose of radiation to the ...
Eddies found to be deep, powerful modes of ocean transport
2011-04-29
Researchers from Woods Hole Oceanographic Institution (WHOI) and their colleagues have discovered that massive, swirling ocean eddies—known to be up to 500 kilometers across at the surface—can reach all the way to the ocean bottom at mid-ocean ridges, some 2,500 meters deep, transporting tiny sea creatures, chemicals, and heat from hydrothermal vents over large distances.
The previously unknown deep-sea phenomenon, reported in the April 28 issue of the journal Science, helps explain how some larvae travel huge distances from one vent area to another, said Diane K. Adams, ...
2 unsuspected proteins may hold the key to creating artificial chromosomes
2011-04-29
FINDINGS: Whitehead Institute scientists report that two proteins once thought to have only supporting roles, are the true "stars" of the kinetochore assembly process in human cells.
RELEVANCE: The kinetochore is vital to proper DNA distribution during cell division. This finding suggests that scientists may be able to stimulate kinetochore assembly in a process that could lead to new genetic research tools, such as efficient creation of artificial human chromosomes. Widespread use of artificial human chromosomes has been thwarted by scientists' current inability to ...
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