Κυριακή 19 Ιανουαρίου 2014

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


The weaker sex: Male honey bees more susceptible than females to widespread intestinal parasite

Posted: 18 Jan 2014 09:25 AM PST

A research team has found that male European honey bees, or drones, are much more susceptible than female European honey bees, known as workers, to a fungal intestinal parasite called Nosema ceranae. Originally from Asia, Nosema ceranae has rapidly spread throughout the world, and may contribute to the high number of colony deaths now observed in many regions of the northern hemisphere. These findings demonstrate the delicate nature of male honey bees, which are important to honey bee colony reproduction, to a well-distributed parasite.

Rate films with smoking 'R' -- cut teen smoking

Posted: 18 Jan 2014 09:24 AM PST

Research estimates the impact of an R rating for movie smoking, and emphasizes that an R rating for any film showing smoking could reduce smoking onset in U.S. adolescents by 18%.

Scientists identify 'molecular fossil' in fungi

Posted: 17 Jan 2014 04:13 PM PST

All but a few eukaryotes die without oxygen, and they respond dynamically to changes in the level of oxygen available to them. Scientists used genetic analysis to pinpoint an evolutionary switch in regulating response to low oxygen levels in fungi.

Telestroke is cost-saving for society

Posted: 17 Jan 2014 04:13 PM PST

Researchers have found that using telemedicine to deliver stroke care, also known as telestroke, appears to be cost-effective for society. The research was recently published in the American Journal of Managed Care.

Researchers collaborate to reduce effects of aging eye

Posted: 17 Jan 2014 04:13 PM PST

Aging gracefully may not be an option for the 40 million people worldwide who are blind or have significant visual impairment. It's reported that 65% of those with visual impairment and 82% of those who are blind are over 50 years of age. Ophthalmic leaders from around the world address "the aging eye" to focus attention on unmet needs and accelerate the translation of research findings into effective clinical care.

Feast or fancy? Black widows shake for love

Posted: 17 Jan 2014 12:37 PM PST

Biologists have found that courting male black widow spiders shake their abdomens to produce carefully pitched vibrations and avoid potential attacks by females -- who otherwise may misinterpret the advances as the vibrations of prey.

Poison-breathing bacteria may be boon to industry, environment

Posted: 17 Jan 2014 12:37 PM PST

Buried deep in the mud along the banks of a remote salt lake near Yosemite National Park are colonies of bacteria with an unusual property: they breathe a toxic metal to survive. Researchers discovered the bacteria on a recent field expedition to Mono Lake in California, and their experiments with this unusual organism show that it may one day become a useful tool for industry and environmental protection.

New study reveals links between alcoholic liver disease, circadian clock

Posted: 17 Jan 2014 12:37 PM PST

Researchers have revealed a putative role for the circadian clock in the liver in the development of alcohol-induced hepatic steatosis, or fatty liver disease.

What comforts targets of prejudice the most

Posted: 17 Jan 2014 12:37 PM PST

Rare in history are moments like the 1960s civil rights movement, in which members of a majority group vocally support minority groups in their fight against prejudice. New research not only confirms the power of speaking up for those facing prejudice but also underlines the importance of exactly what is communicated. Looking at YouTube video messages, researchers found that homosexual youth found the most comfort in messages that both supported them and advocated social change.

Breakthrough technology enables gene silencing to heal wounds

Posted: 17 Jan 2014 07:39 AM PST

Researchers have developed a tissue scaffold that can deliver gene therapy to wounds over a period of several weeks.

New discovery on Giant Cell Arteritis sheds light on cause

Posted: 17 Jan 2014 06:06 AM PST

New research has revealed -- for the first time -- how the condition Giant Cell Arteritis (GCA) may be caused by a certain group of white blood cells called 'neutrophils'. GCA (also known as temporal arteritis) is a condition which causes severe inflammation in the blood vessels and primarily affects the elderly.

Patients with learning disabilities become 'invisible' in hospitals, says study

Posted: 17 Jan 2014 06:05 AM PST

Hospital patients with learning disabilities face longer waits and mismanaged treatment due to a failure to understand them by nursing staff, says a new report.

Engineering solutions for soldiers on the battlefield

Posted: 17 Jan 2014 06:01 AM PST

University students have won a national competition thanks to a revolutionary helmet they designed for use by soldiers on the battlefield. The contest required the students to build a piece of equipment, using the Thales Arduino open-source electronic microprocessor platform, which tied in with certain business areas - transport, aerospace, defense and security. The students designed an innovative helmet that monitors soldiers' heartbeat and temperature along with other factors such as their body position.

Statin use reduces delirium in critically ill patients

Posted: 17 Jan 2014 05:58 AM PST

Continued use of statins may help prevent delirium in critically ill patients who received statins before hospital admission, according to a new study of 470 intensive care patients in the UK.

45 years on: How serotonin makes schistosome parasites move

Posted: 16 Jan 2014 04:03 PM PST

Schistosoma mansoni and its close relatives are parasitic flatworms that affect millions worldwide and kill an estimated 250,000 people a year. A study identifies a new part of the molecular pathway that controls parasite movement. And because coordinated movement is essential for the schistosome life cycle in its human host, this protein is a promising new drug target.

Higher vitamin D levels associated with better cognition, mood in Parkinson's disease patients

Posted: 16 Jan 2014 04:02 PM PST

A new study exploring vitamin D levels in patients with Parkinson's disease (PD) opens up the possibility of a new avenue of early intervention that may delay or prevent the onset of cognitive impairment and depression.

Changes in brain gray matter volume associated with memory deficits in early Parkinson's disease

Posted: 16 Jan 2014 04:02 PM PST

Research by a team of investigators suggests that the free recall memory deficits common even in early stages Parkinson's disease are related to structural changes in the brain, specifically parietal cortical gray matter volume.

Geography plays major role in access to pediatric kidney transplantation in U.S.

Posted: 16 Jan 2014 04:01 PM PST

There is substantial geographic variation in deceased donor kidney waiting times for children across the United States, with median waiting time ranging from as little as two weeks to as long as three years. Local supply and demand of high quality organs had a significant impact on waiting times for children in need of kidneys.

Medicaid expansion improves health care services for prison population

Posted: 16 Jan 2014 01:22 PM PST

An American national study finds that prison systems are increasingly aiding prisoners' enrollment in Medicaid, both during incarceration and in preparation of release.

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