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URI researcher sheds light on 'man-eating' squid; finds them timid, nonthreatening

KINGSTON, R.I. July 23, 2009 News reports last week about scuba divers off San Diego being menaced by large numbers of Humboldt's or jumbo squid have raised the ire of University of Rhode Island biologist Brad Seibel. As a leading expert on the species who has dived with them several times, he...

URI researcher sheds light on 'man-eating' squid; finds them timid, non-threatening

KINGSTON, R.I. July 23, 2009 News reports last week about scuba divers off San Diego being menaced by large numbers of Humboldt's or jumbo squid have raised the ire of University of Rhode Island biologist Brad Seibel. As a leading expert on the species who has dived with them several times, he...

Discovery of a water snake that startles fish in a way that makes them flee into its jaws

Forget the old folk tales about snakes hypnotizing their prey. The tentacled snake from South East Asia has developed a more effective technique. The small water snake has found a way to startle its prey so that the fish turn toward the snake's head to flee instead of turning away. In addition, th...

Scientists explain how 'death receptors' designed to kill our cells may make them stronger

It turns out that from the perspective of cell biology, Nietzsche may have been right after all: that which does not kill us does make us stronger. In a review article published in the June 2009 print issue of The FASEB Journal ( http://www.fasebj.org ), scientists from the Mayo Clinic explain h...

CSHL scientists discover how 'companion' cells to sperm protect them from genetic damage

Cold Spring Harbor, N.Y. In plant pollen grains, sperm cells, which carry the genetic material to be passed on to progeny, are cocooned within larger "companion" cells that are called pollen vegetative cells. These companions provide sperm with energy and nourishment, and push them towards their...

Don't blame cities for climate change, see them as solutions

Cities are being unfairly blamed for most of humanity's greenhouse gas emissions and this threatens efforts to tackle climate change, warns a study in the October 2008 issue of the journal Environment and Urbanization . The paper says cities are often blamed for 75 to 80 percent of emissions,...

High hormone levels in seabird chicks prepare them to kill their siblings

The Nazca booby, a Galpagos Island seabird, emerges from its shell ready to kill its brother or sister. Wake Forest University biologists and their colleagues have linked the murderous behavior to high levels of testosterone and other male hormones found in the hatchlings. The study appears in...

Book on weeds and invasive plants discusses how to manage them using ecological approaches

RIVERSIDE, Calif. As people become more globally mobile, plants can inadvertently get transported with them, resulting in new plants appearing in places not used to hosting them. Such invasions of exotic species can occur rapidly, taking over new territories at the expense of native plants. H...

Environmental fate of nanoparticles depends on properties of water carrying them

The fate of carbon-based nanoparticles spilled into groundwater and the ability of municipal filtration systems to remove the nanoparticles from drinking water depend on subtle differences in the solution properties of the water carrying the particles, a new study has found. In slightly sal...

Protein protects lung cancer cells from efforts to fix or kill them

GAINESVILLE, Fla. --- A protein that helps lung cancer cells thrive appears to do so by blocking healthy cells ability to fix themselves when radiation or chemicals such as nicotine damage their DNA, according to a University of Florida study to be published Friday (Feb. 29) in the journal Molecul...

Freeze! Scientists film proteins at work by freezing them at different states

It is difficult to find similarities between Grenoble and Hollywood or between the researchers at the ESRF and the Institut de Biologie Structural (IBS) and world-known filmmakers. However, scientists from these institutes based in Grenoble (France) have managed to produce a movie. The actors are n...

Weighting cancer drugs to make them hit tumors harder

Scientists have devised a blueprint for boosting anti-cancer drugs' effectiveness and lowering their toxicity by attaching the equivalent of a lead sinker onto the drugs. This extra weight makes the drugs penetrate and accumulate inside tumors more effectively. Chemotherapy drugs often fall short...

Locusts' built-in 'surface analysis' ability directs them to fly overland

Swarms of millions of locusts have, since Biblical times and until our very own day, been considered a "plague" of major proportions, with the creatures destroying every growing thing in their path. Until now, it was thought that the directions of these swarms were predominantly directed by preva...

EMBO pioneers pension plan for internationally mobile postdoctoral researchers

...Company Pension Scheme Division at MLP. "It allows them to make early pension provisions without having to...outside their home countries. It's not unusual for them to move two, or even three, times in the early yea...ntributed to a pension scheme, while nearly all of them were insured against health risks and accidents. T...

Marine microbes creating green waves in industry

...icular - as a result of this search." Microorganisms account for more than 95 per cent of ocean biomass but relatively little is really known about them and their potential applications. The research team's search is for industrially relevant enzymes which will reduce waste and increase productivity in...

Navigating in the ocean of molecules

...hemical space. It generates maps of chemically-related structures and links them to biological activity, that is, to their potential to bind to proteins, in...m. Therefore, the researchers have developed this navigation system to help them steer their way through this sea of possibilities. The program Scaffold Hun...

Carbon nanoparticles toxic to adult fruit flies but benign to young

...ransported carbon nanoparticles and then deposited them elsewhere when they groomed themselves. The fin...sically. In some, the carbon nanoparticles covered them from wings to legs, which may have impeded their movement or weighted them down too much to climb. In others, the nanoparticl...

NIH stimulus funding supports Emory biomedical scientists

...ith Emory nursing professor Sandra Dunbar. Their project tests whether involving family members in the care of elderly heart failure patients can help them stick to their diets and medication plans. Emory undergraduate Garron Deshazer is working with Emory cardiologist John Oshinski to study how cardi...

Scientists find universal rules for food-web stability

...y Scientists from the Max Planck Institute for the Physics of Complex Systems (MPIPKS) in Dresden, Germany, have developed a new method that allows them to efficiently analyze the impact of innumerable parameters on complex systems. "By using a method called generalized modeling, we examine whether ...

AGU journal highlights -- Aug. 6, 2009

...cape. The researchers conclude that it is essential to include LCC in future regional and global climate studies but that it is not feasible to impose them in a common way across multiple models for the next Intergovernmental Panel on Climate Change assessment. Title: Uncertainties in climate responses...

New cancer drug delivery system is effective and reversible

...e-consuming, however, and the process of attaching them to liposomes is difficult to control. Antibodies s...ers that bind to specific molecules and converting them into effective sensors and diagnostic agents. His ... readily bind to complementary DNA, which prevents them from interacting with cell receptors. The new ...

Climbing to new heights in the forest canopy

...ing in large arcs, known as circumnutation, giving them the greatest likelihood of encountering a support....ing structure through viscous secretions, allowing them to crawl up very large tree trunks. Hook-climbers ...h frequency of wide water transport vessels, allow them to maintain this flexibility and withstand breakag...

Protein handlers should be effective treatment target for cancer and Alzheimer's

... proteins and the molecular chaperones that manage them from cradle to grave. Understanding the exact r...make proteins, move proteins around the body, fold them up into the proper shape to function properly and even haul them off when they no longer work. Cancer needs...

Moving to the US increases cancer risk for Hispanics

...co. "This suggests that changes in their environment and lifestyles make them more prone to develop cancer," Pinheiro said. "It is puzzling that the grou... Hispanic population group, in order to evaluate habits that may predispose them to certain cancers. More research should focus on these unique populations ...

More than half of Texas physicians do not always recommend HPV vaccine to girls

... Kahn said she was approached by the Texas Medical Association to assist them in conducting this survey as part of their efforts to assess educational ne...t issues of safety and how to address parental concerns. That may be making them reluctant to deliver the vaccine," said Kahn. Although the study popula...

Women often opt to surgically remove their breasts, ovaries to reduce cancer risk

...psy. This will minimize the anxiety that comes along with such a diagnosis. Patients should consult with an expert in advance and stay in contact with them to see how the science may be changing over time," she advised. "This is an ongoing conversation that needs to be addressed and individualized for eac...

Venomous sea snakes play heads or tails with their predators

...or food sea snakes probe crevices and coral formations, temporarily forcing them to drop their guard to threats from the surrounding waters and making them highly vulnerable to attack. However, the Yellow-lipped Sea Krait has been ...

Abnormal brain circuits may prevent movement disorder

...ed gene called DYT1 will develop the involuntary movements that can prevent them from living a normal life, according to Dr. Eidelberg. The puzzle was why. In the latest study, the new advances in diffusion imaging allowed them to see something for the first time. They saw that there were two places al...

Understanding how weeds are resistant to herbicides

...and a sequencing reaction going on in every one of them simultaneously. There's a camera that monitors the...'s more gene-specific. "We sampled plants, brought them back to the green house, grew them up, confirmed that they were resistant and then we...

Joint research into an enzyme that causes genetic diseases

...nction is not adequately performed (for example, when mutations in the gene arise) diverse metabolic diseases of genetic origin are triggered, amongst them lactic acidaemia, hypoglycaemia, and psycho-motor retardation. At the same time, being at a metabolic crossroads, pyruvate carboxylase is potentially ...

Beautiful plumage: Feather color and sex start the species revolution

...pecies have the same body shape, but different colored bellies and distinct songs. Birds from these sub-species could mate, but these differences stop them recognizing each other as potential sexual partners. This is evidence of incipient speciation: the beginning of the evolution of new species. Other fl...

Bioethanol's impact on water supply 3 times higher than once thought

...nal irrigation practice in growing corn. However, a dozen states in the Corn Belt consume less than 100 gallons of water per gallon of ethanol, making them better suited for ethanol production. "The results highlight the need to take regional specifics into account when implementing biofuel mandates," the...

Scary ancient spiders revealed in 3-D models, thanks to new imaging technique

...dy reveals some of the physical traits that helped them to hunt for prey and evade predators. The resea...mages by using a CT scanning device, which enabled them to take 3,000 x-rays of each fossil. These x-rays ...sed the growths at the base of their limbs to help them grind their food. These coxal endite-type growths ...

Lead-based consumer paint remains a global public health threat

...ven to correcting the problem in many parts of the world," says Clark. "Meanwhile, thousands of children continue to be poisoned by the metal, setting them up for life-threatening problems later in life. "Our studies have shown that when comparing the prices of the same size can of paint produced by s...

Hybrid vehicle rebates produce scant environmental benefits, high cost

...iu Institute for Global Issues and Institute of Asian Research. "Our estimates indicate that two-thirds of people who buy hybrids were going to buy them anyway," says Chandra. "So for the majority, rebates are not changing behaviour they are subsidizing planned purchases." According to the study, ...

Agricultural research key to food security

...e closely with their counterparts in the North, to develop technology transfer initiatives, and with policy-makers in their own countries, to convince them of the value of what they do and to advocate for policies that help farmers make use of the best available technologies and management strategies to i...

Animal and plant communication at the ESA Annual Meeting

...But when the researchers washed the bugs in a chemical solvent and returned them to the plants, the ants immediately swarmed the bugs. The key, says Wh...s mimic the hydrocarbons that the ants produce, so the ants don't recognize them as something foreign." Even if this chemical camouflage is energetically...

Holding breath for several minutes elevates marker for brain damage

...ld cause neurological damage over time. The researchers recommended further research on free divers that would begin early in their careers and follow them for years to monitor their neurological function. The study is "Increased serum levels of the brain damage marker S100B after apnea in trained brea...

DNA computation gets logical at the Weizmann Institute of Science

...o and his team, in a paper published online today in Nature Nanotechnology , have devised an advanced program for biomolecular computers that enables them to 'think' logically. The train of deduction used by this futuristic device is remarkably familiar. It was first proposed by Aristotle over 2000 years...

Scientists open doors to diagnosis of emphysema

...in the lungs to destroy the foreign material, and chronic exposure causes inflammation. MMP12 is an enzyme secreted by macrophages which usually helps them to break down the extracellular matrix (the complex network of proteins and fibers that surround and support the cells of the body), a process importa...
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