Friday, December 20, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Brain connections may explain why girls mature faster

Scientists have discovered that as the brain re-organizes connections throughout our life, the process begins earlier in girls which may explain why they mature faster during the teenage years.

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A new -- and reversible -- cause of aging: A naturally produced compound rewinds aspects of age-related demise in mice

Researchers have discovered a cause of aging in mammals involving a series of molecular events that disables communication between the nucleus and mitochondria. By administering a molecule naturally produced by the human body, the communication network was restored in older mice. Subsequent tissue samples showed biological hallmarks comparable to much younger animals.

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Electron 'antenna' tunes in to physics beyond Higgs

In making the most precise measurements ever of the shape of electrons, a team of Harvard and Yale scientists have raised severe doubts about several popular theories of what lies beyond the Higgs boson.

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With sinus study, harmless members of microbiome spark immune reaction

Researchers have found evidence that some chronic sinus issues may be the result of inflammation.

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Nutrition influences metabolism through circadian rhythms, study finds

A high-fat diet affects the molecular mechanism controlling the internal body clock that regulates metabolic functions in the liver, scientists have found. Disruption of these circadian rhythms may contribute to metabolic distress ailments, such as diabetes, obesity and high blood pressure.

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DNA clamp to grab cancer before it develops

As part of an international research project, a team of researchers has developed a DNA clamp that can detect mutations at the DNA level with greater efficiency than methods currently in use. Their work could facilitate rapid screening of those diseases that have a genetic basis, such as cancer, and provide new tools for more advanced nanotechnology.

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Congenital heart disease causes hypoglycaemia

In a new study, scientists document a connection between congenital arrhythmia and the bodies' ability to handle sugar. The results can be of vital importance for patients with the disease and for the future treatment of diabetes.

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New salt compounds challenge the foundation of chemistry

All good research breaks new ground, but rarely does the research unearth truths that challenge the foundation of a science. That's what chemists have now done. Scientists have compressed sodium chloride—rock salt—to form new compounds.

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Anti-epilepsy drugs can cause inflammation

Physicians have been investigating if established anti-epilepsy drugs have anti-inflammatory or pro-inflammatory properties – an effect for which these pharmaceutical agents are not usually tested. One of the substances tested caused stronger inflammations, while another one inhibited them. As inflammatory reactions in the brain may be the underlying cause for epileptic disorders, it is vital to take the trigger for the disorder under consideration when selecting drugs for treatment, as the researchers concluded.

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Awareness of Jolie's preventive mastectomy not linked to greater knowledge of breast cancer risk

A new study has found that while three out of four Americans were aware that Angelina Jolie had undergone a preventive double mastectomy, awareness of her story was not associated with an increased understanding of breast cancer risk. The study surveyed more than 2,500 adults nationwide three weeks after Jolie revealed in a New York Times op-ed that she had undergone the surgery because she carried a rare genetic mutation of the BRCA1 gene and had a family history of cancer.

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Emerald ash borer may have met its match

Woodpeckers find emerald ash borers a handy food source and may slow the spread of this noxious pest, even ultimately controlling it, suggest researchers.

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With surgical robot, similar outcomes higher cost

In a study of national data on colon surgery, researchers found that while patients who undergo either minimally invasive laparoscopic surgery or the high-tech robotic approach have similar outcomes, robotic surgery is significantly more expensive.

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Newly identified immune receptor may activate B cells in autoimmunity

A newly identified immune protein influences each person's response to vaccines and risk for autoimmune diseases like lupus and multiple sclerosis. The protein, called a receptor and part of signaling pathways, also provides a new target for personalized therapies for patients with autoimmune diseases.

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Empowering people with disabilities in the green industries

People with disabilities represent a talented and creative section of the workforce in most areas of employment. A study suggests that as the so-called "green economy" grows, so education and training opportunities should be tailored to people with disabilities as well as those without.

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The origin of flowers: DNA of storied plant provides insight into the evolution of flowering plants

Biologists have sequenced the genome of the Amborella plant. The genome sequence sheds new light on a major event in the history of life on Earth: the origin of flowering plants, including all major food crop species.

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Catching the big wave: 'Universal ripple' could hold the secret to high-temperature superconductivity

Researchers have discovered a universal electronic state that controls the behavior of high-temperature superconducting copper-oxide ceramics.

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New way to map important drug targets

Researchers have used new techniques and one of the brightest X-ray sources on the planet to map the 3-D structure of an important cellular gatekeeper in a more natural state than possible before.

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Controlling parasitic worms with genetic selection

Helminths are gastrointestinal parasitic worms that have become a major concern and source of economic loss for sheep producers around the world. A new article reviews current research into a promising alternative to control the disease.

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Coastal ocean aquaculture can be environmentally sustainable

Specific types of fish farming can be accomplished with minimal or no harm to the coastal ocean environment as long as proper planning and safeguards are in place, according to a new report.

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Graphene sees the light: Sheets of carbon just one atom thick could be used in photovoltaic cells

Sheets of carbon just one atom thick could make effective transparent electrodes in certain types of photovoltaic cells.

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Bullying in academia more prevalent than thought

Bullying isn't only a problem that occurs in schools or online among young people. It can happen anywhere to anyone, and a nursing scholar is shedding some light on how it is becoming increasingly common in academia.

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New data compression method reduces big-data bottleneck; outperforms, enhances JPEG

In creating an entirely new way to compress data, a team of researchers has drawn inspiration from physics and the arts. The result is a new data compression method that outperforms existing techniques, such as JPEG for images, and that could eventually be adopted for medical, scientific and video streaming applications.

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Ways of the photoelectric effect; How physicists have learned how to select them

Scientists have managed, for the first time in the history of photoelectric studies, to eliminate one serious obstacle that hampered these investigations for many years -- namely, the nuclear magnetic moment.

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Graphene-based field-effect transistor with semiconducting nature opens up practical use in electronics

Scientists have announced a method for the mass production of boron/nitrogen co-doped graphene nanoplatelets, which led to the fabrication of a graphene-based field-effect transistor (FET) with semiconducting nature. This opens up opportunities for practical use in electronic devices.

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Evolution of plumage patterns in male and female birds

Research looks at the evolutionary pathways to differences in bird plumage patterns between males and females -- and concludes that birds are able to adapt their appearance with remarkable ease.

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Data are lost to science at 'astonishing rate'

New evidence confirms long-held fears about the fate of scientific data. Careful evaluation of more than 500 randomly selected studies found that the original data behind those published papers have been lost to science at a rapid rate.

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New ways to promote fitness for urban girls

How African-American girls and women perceive physical fitness are addressed by scholar, with recommendations for new ways to promote fitness.

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Black-white infant mortality gap: Large, persistent, unpredictable

The unobservable factors that underpin the infant mortality gap between blacks and whites have persisted for more than 20 years and now appear to play a larger role than the observable factors, according to a new study.

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Telecoupling science shows China's forest sustainability packs global impact

As China increases its forests, a sustainability scholar proposes a new way to answer the question: if a tree doesn't fall in China, can you hear it elsewhere in the world?

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Mating is kiss of death for certain female worms

The presence of male sperm and seminal fluid causes female worms to shrivel and die after giving birth, researchers reported this week. The demise of the female appears to benefit the male worm by removing her from the mating pool for other males.

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A micro-muscular breakthrough: Powerful new microscale torsional muscle/motor from vanadium dioxide

Researchers have demonstrated a micro-sized robotic torsional muscle/motor made from vanadium dioxide that for its size is a thousand times more powerful than a human muscle, able to catapult objects 50 times heavier than itself over a distance five times its length faster than the blink of an eye.

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Ancient cranial surgery: Practice of drilling holes in the cranium that dates back thousands of years

Some might consider drilling a hole in someone's head a form of torture, but in the province of Ahdahuaylas in Peru, ca. AD 100-1250, it was state-of-the-art medical care.

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Researchers generate kidney tubular cells from stem cells

Investigators have discovered a cocktail of chemicals which, when added to stem cells in a precise order, turns on genes found in kidney cells in the same order that they turn on during embryonic kidney development. The kidney cells continued to behave like kidney cells when transplanted into adult or embryonic mouse kidneys.

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Driving force behind mitochondrial 'sex' in ancient flowering plant

A new study has uncovered an unprecedented example of horizontal gene transfer in a South Pacific shrub that is considered to be the sole survivor of one of the two oldest lineages of flowering plants.

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Opposing phenomena possible key to high-efficiency electricity delivery

Researchers report that the coexistence of two opposing phenomena might be the secret to understanding how materials known as high-temperature superconductors -- heralded as the future of powering our homes and communities -- actually work. Such insight could help spur the further development of high-efficiency electric-power delivery.

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More than half of consumers will choose health-care plan that costs too much, study predicts

Tens of millions of consumers are expected to sign up for healthcare via the new health insurance exchanges set up by the federal and state governments. Using simulated exchanges modeled on the design of the actual exchanges, alarming new research suggests that more than 80 percent of consumers may be unable to make a clear-eyed estimate of their needs and will unknowingly choose a higher cost plan than needed.

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Greek economic crisis leads to air pollution crisis

A spike in fuel prices has led to Greek residents burning more wood to keep warm -- with significant negative impacts on air quality.

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TB bacteria mask their identity to intrude into deeper regions of lungs

TB-causing bacteria appear to mask their identity to avoid recognition by infection-killing cells in the well-patrolled upper airways. The bacteria call up more permissive white blood cells in the deeper regions of the lungs and hitch a ride inside them to get into parts of the host's lungs that are under less surveillance.

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Scientists discover how immune cells die during HIV infection; Identify potential drug to block AIDS

Research has identified the chain of molecular events that drives the death of the immune system's CD4 T cells as an HIV infection leads to AIDS. Further, they have identified an existing anti-inflammatory drug that blocks the death of these cells -- and now are planning a Phase 2 clinical trial to determine if it can prevent HIV-infected people from developing AIDS.

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X-ray laser maps important drug target

Researchers have used one of the brightest X-ray sources on the planet to map the 3-D structure of an important cellular gatekeeper known as a G protein-coupled receptor, or GPCR, in a more natural state than possible before.

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How cells remodel after UV radiation

Researchers have produced the first map detailing the network of genetic interactions underlying the cellular response to ultraviolet (UV) radiation.

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Cost of antibiotic drugs for children: Comparison of two countries

The 2009 costs of antibiotics covered by private insurance companies in the U.S. for children younger than 10 years old were estimated to be more than five times higher than the costs in the United Kingdom, which are covered by a government universal health plan.

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Pharmacy staff frequently misinform teens seeking emergency contraception, study suggests

A new study finds that pharmacy staff frequently give teens misleading or incorrect information about emergency contraception that may prevent them from getting the medication.

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Advances in nanotechnology's fight against cancer

Among the most promising advances in the fight against cancer has been the rise of nanomedicine, the application of tiny materials and devices to detect, diagnose and treat disease. Researchers provide one of the most comprehensive assessments to date of research on nanomedicine-based approaches to treating cancer, and offers insight into how researchers can best position nanomedicine-based cancer treatments for FDA approval.

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Suicide widely deemed immoral because it 'taints the soul,' study shows

People -- even non-religious people -- make the moral judgment that suicide is wrong not because of any specific harm related to the act, but because they believe it taints the purity of a person's soul, according to a report.

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New role for milk: Delivering polyphenols with anti-cancer activity

Polyphenols found in tea manifest anti-cancer effects, but their use is limited by poor bioavailability and disagreeable taste. A new study in the Journal of Dairy Science® finds that when epigallocatechin gallate (EGCG), the major extractable polyphenol in green tea and the most biologically active, when diluted in skim milk or other milk complexes remains bioactive and continues to reduce colon cancer cell proliferation in culture at concentrations higher than 0.03 mg of EGCG/mL.

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Living at home with dementia

Most people with dementia who live at home have multiple unmet health and welfare needs, any number of which could jeopardize their ability to remain home for as long as they desire, new research suggests.

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Cocaine, meth response differ between two substrains of lab mice

Researchers have found a single nucleotide polymorphism difference in cocaine and methamphetamine response between two substrains of the C57BL/6 or "Black 6" inbred laboratory mouse, pointing to Cyfip2 as a regulator of cocaine response with a possible role in addiction.

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BCG vaccine more effective than previously thought

The BCG vaccine has been found to be more effective against the most common form of tuberculosis than previously thought, according to a systematic review.

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African-American women must eat less or exercise more to lose as much weight as Caucasians

African-American women may need to eat fewer or burn more calories than their Caucasian counterparts in order to lose a comparable amount of weight, according to researchers.

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Corn pest decline may save farmers money

Populations of European corn borer (ECB), a major corn crop pest, have declined significantly in the eastern United States, according to researchers. The decline suggests that the use of genetically modified, ECB-resistant corn hybrids -- an expensive, yet effective, solution that has been widely adopted by farmers -- may now be unnecessary in some areas.

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New gene responsible for cleft lip, palate syndrome identified

An international team has identified a new gene related to the Van der Woude syndrome, the most common syndrome with cleft lip and palate. The study can lead the way to improved genetic diagnostic of individuals and families with orofacial clefts.

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