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Last feed update: Tuesday November 12th, 2019 06:34:49 AM

Use of locum doctors rising despite limited evidence on quality and safety

Tuesday November 12th, 2019 01:47:39 AM
There is little hard evidence to support the widely held perception that locum doctors present a greater risk of causing harm to patients.

Fingerprint test can distinguish between those who have taken or handled heroin

Tuesday November 12th, 2019 01:47:38 AM
A state-of-the-art fingerprint detection technology can identify traces of heroin on human skin, even after someone has washed their hands -- and it is also smart enough to tell whether an individual has used the drug or shaken hands with someone who has handled it.

Lower IQ, family history tied to treatment-resistant schizophrenia

Tuesday November 12th, 2019 01:47:35 AM
Those with a family history of schizophrenia and men with lower IQ are more likely to struggle with treatment resistant schizophrenia than others with the mental disorder, according to a new study. The researchers say the findings could be important in efforts to design novel drug treatments that improve cognition.

Associations between childhood maltreatment and offending behaviors later in life

Tuesday November 12th, 2019 01:47:32 AM
Children who experience maltreatment, such as neglect or physical or sexual abuse, are more likely to engage in delinquent and offending behaviors in adolescence and young adulthood, according to a new study.

Women with preeclampsia may be at greater risk for cardiac conditions later in life

Monday November 11th, 2019 11:01:24 PM
Women who have gestational hypertension or preeclampsia in at least one pregnancy will have higher cardiovascular risk than women without such a history, and that this elevated risk persists at least into their 60s.

Dose of medication more likely to put patients with pemphigus into remission

Monday November 11th, 2019 11:01:22 PM
Researchers compare a lymphoma-dose regimen of rituximab to a rheumatoid arthritis regimen for the treatment of pemphigus.

New catalyst efficiently produces hydrogen from seawater

Monday November 11th, 2019 11:01:11 PM
Seawater is one of the most abundant resources on earth, offering promise both as a source of hydrogen and of drinking water in arid climates. Now researchers have reported a significant breakthrough with a new oxygen evolution reaction catalyst that, combined with a hydrogen evolution reaction catalyst, achieved current densities capable of supporting industrial demands while requiring relatively low voltage to start seawater electrolysis.

Injectable, flexible electrode could replace rigid nerve-stimulating implants

Monday November 11th, 2019 11:01:08 PM
By electrically stimulating nerves, neuromodulation therapies can reduce epileptic seizures, soothe chronic pain, and treat depression and a host of other health conditions without the use of conventional drugs like opioids. Now, biomedical engineers have made a significant advance that could dramatically reduce the cost of neuromodulation therapy, increase its reliability and make it much less invasive.

New understanding of antibiotic synthesis

Monday November 11th, 2019 11:01:02 PM
Researchers have made important strides in understanding the functioning of enzymes that play an integral role in the production of antibiotics and other therapeutics.

Scientists study impact of sediments and nutrients from Conowingo Dam on Chesapeake Bay

Monday November 11th, 2019 11:00:58 PM
A new study examines the influences of a river dam on the fate of sediments and nutrients on an estuary, using the Conowingo Dam and the Chesapeake Bay as a case study.

Anticoagulant benefits for atrial fibrillation decrease with age

Monday November 11th, 2019 11:00:54 PM
The net clinical benefit of anticoagulants for atrial fibrillation (AF) -- one of the most important causes of irregular heartbeats and a leading cause of stroke -- decreases with age, as the risk of death from other factors diminishes their benefit in older patients, according to a new study.

What do we know about the gut microbiota in Parkinson's disease?

Monday November 11th, 2019 11:00:52 PM
Since the discovery that the gut microbiome may play a role in the development of Parkinson's disease (PD), this fresh scientific approach has produced varying results. Scientists compare results of current research and provide recommendations to increase the comparability and utility of these studies with a view towards improving patient outcomes.

Miniature fanged 'deer' rediscovered tiptoeing through Vietnam's coastal forests

Monday November 11th, 2019 11:00:51 PM
Biologists have rediscovered a species lost to science since 1990 called a silver-backed chevrotain -- a deer-like species that is the size of a rabbit, has a silver sheen, and has been hanging on in a region of Vietnam ravaged by poaching by snares.

New fossil pushes back physical evidence of insect pollination to 99 million years ago

Monday November 11th, 2019 08:41:50 PM
Researchers have pushed back the first-known physical evidence of insect flower pollination to 99 million years ago, during the mid-Cretaceous period.

New particle analysis technique paves way for better air pollution monitoring

Monday November 11th, 2019 08:41:34 PM
A new technique for continuously monitoring both the size and optical properties of individual airborne particles could offer a better way to monitor air pollution.

Finding common ground for scientists and policymakers on soil carbon and climate change

Monday November 11th, 2019 08:06:43 PM
Scientists argue that public debate about the role of soil carbon in battling climate change is undermining the potential for policymakers to implement policies that build soil carbon for other environmental and agricultural benefits.

Hurricanes have become bigger and more destructive for USA

Monday November 11th, 2019 08:06:39 PM
A new study shows that hurricanes have become more destructive since 1900, and the worst of them are more than 3 times as frequent now than 100 years ago. A new way of calculating the destruction unequivocally shows a climatic increase in the frequency of the most destructive hurricanes that routinely raise havoc on the North American south- and east coast.

Prey-size plastics are invading larval fish nurseries

Monday November 11th, 2019 08:06:36 PM
Researchers revealed that many larval fish species from different ocean habitats are ingesting plastics in their preferred nursery habitat.

How two strains of one bacterium combine to cause flesh-eating infection

Monday November 11th, 2019 08:06:34 PM
A new study used genetic analysis to reveal how two different strains of a single species of flesh-eating bacteria worked in concert to become more dangerous than either one strain alone. The work suggests that other difficult-to-treat infections may be polymicrobial and treating only one organism in a polymicrobial infection could be the cause of many secondary infections and chronic infections that resist treatment.

'Ghost' footprints from Pleistocene era revealed by radar tech

Monday November 11th, 2019 07:58:53 PM
Invisible footprints hiding since the end of the last ice age -- and what lies beneath them -- have been discovered by researchers using a special type of radar in a novel way.

Cholesterol levels in American adults declining since 2013 guideline release

Monday November 11th, 2019 07:14:28 PM
The implementation of the 2013 American College of Cardiology/American Heart Association Guideline on the Treatment of Blood Cholesterol has been linked to improved overall cholesterol levels for American adults, especially those on cholesterol lowering medications, according to a new study.

Biomarker blood test could reveal high risk heart patients in need of treatment

Monday November 11th, 2019 06:33:28 PM
Preventive cardiology researchers believe that a new blood test for protein biomarkers could identify early stage heart disease in people.

Late talkers twice as likely to have severe, frequent temper tantrums

Monday November 11th, 2019 06:33:22 PM
Toddler speech delays and temper tantrums have long been assumed to be linked. Now, for the first time, a new, large-scale study supports that assumption with data.

Scientists find eternal Nile to be more ancient than previously thought

Monday November 11th, 2019 05:47:57 PM
The Nile's unchanging path has been a geologic mystery because long-lived rivers usually move over time. Researchers have cracked the case by linking the river's flow to the movement of rock in the Earth's deep mantle. In the course of their investigation, they found the age of the Nile to be 30 million years -- about six times as long as previously thought.

Evolutionary diversity is associated with Amazon forest productivity

Monday November 11th, 2019 05:47:55 PM
An international team of researchers have revealed for the first time that Amazon forests with the greatest evolutionary diversity are the most productive.

A cheaper way to scale up atomic layer deposition

Monday November 11th, 2019 05:47:54 PM
Chemical engineers have developed a new method for atomic layer deposition, a technique commonly used in high-quality microelectronics. The new method can be used in materials with larger surfaces much more cheaply than current approaches, while preserving quality and efficiency.

Large scale integrated circuits produced in printing press

Monday November 11th, 2019 05:47:52 PM
Researchers have shown for the first time that it is possible to print complete integrated circuits with more than 100 organic electrochemical transistors.

Using mountains for long-term energy storage

Monday November 11th, 2019 05:47:50 PM
The storage of energy for long periods of time is subject to special challenges. A researcher proposes using a combination of Mountain Gravity Energy Storage (MGES) and hydropower as a solution for this issue.

Oxygen deficiency rewires mitochondria

Monday November 11th, 2019 05:47:48 PM
Mitochondria burn oxygen and provide energy for the body. Cells lacking oxygen or nutrients have to change their energy supply quickly in order to keep growing. Scientists have now shown that mitochondria are reprogrammed under depleted oxygen and nutrients. Tumors of the pancreas may also use this reprogramming mechanism to keep growing despite reduced nutrient and oxygen levels. The researchers believe that proteins in this newly discovered signaling pathway could be a good target for therapies against pancreatic cancer, for which no drug is currently available.

Scientists map mouse personality

Monday November 11th, 2019 05:47:46 PM
Scientists have developed a computational method to objectively measure the personality of mice living in a semi-natural, group environment.

The pathway to Parkinson's takes a surprising twist

Monday November 11th, 2019 05:47:44 PM
A new study finds that neurons affected in Parkinson's disease can shut down without fully dying, allowing them to also switch off neighboring cells. The findings might give scientists a better understanding of how the condition wrecks havoc in the brain, as well as ideas for new treatments.

Combining satellites, radar provides path for better forecasts

Monday November 11th, 2019 05:47:42 PM
Every minute counts when it comes to predicting severe weather. Combing data from cutting-edge geostationary satellites and traditional weather radar created a path toward earlier, more accurate warnings, according to researchers who studied supercell thuderstorms in the Midwest.

How meditation can help you make fewer mistakes

Monday November 11th, 2019 05:46:37 PM
New research tested how open monitoring meditation altered brain activity in a way that suggests increased error recognition.

New findings on nitrous oxide emissions from northern trees surprised scientists

Monday November 11th, 2019 03:50:11 PM
A recent study demonstrates that boreal forests of the Northern Hemisphere are sources of the greenhouse gas nitrous oxide (N2O). The study provides new information on the significance of trees as sinks and sources of greenhouse gases, proving that forests have relevance not only in the absorption of carbon, but also as a source of other greenhouse gases.

How the Zika virus can spread

Monday November 11th, 2019 03:50:08 PM
The spread of infectious diseases such as Zika depends on many different factors. Researchers were able to generate reliable maps for the transmission risk of the Zika virus in South America.

Putting a conservation finger on the internet's pulse

Monday November 11th, 2019 03:50:06 PM
Social media is a rich vein of data for researchers to discover important trends in human environmental behavior. But analyzing this staggering quantity of data is a major challenge -- until now.

For the first time: A method for measuring animal personality

Monday November 11th, 2019 03:50:04 PM
A study on mice shows animal research may need to take into account the connection between genes, behavior and personality.

Humans' ability to read dogs' facial expressions is learned, not innate

Monday November 11th, 2019 03:50:01 PM
Researchers assessed how experience with dogs affects humans' ability to recognize dog emotions. Participants who grew up in a cultural context with a dog-friendly attitude were more proficient at recognizing dog emotions. This suggests that the ability to recognize dogs' expressions is learned through age and experience and is not an evolutionary adaptation.

Antibiotics: New substances break bacterial resistance

Monday November 11th, 2019 03:49:59 PM
Researchers have developed a new, promising class of active ingredients against resistant bacteria. In initial tests in cell cultures and insects, the substances were at least as effective as common antibiotics. The new compounds target a special enzyme that only appears in bacteria in this specific form and that was not previously the target of other antibiotics.

An exception to the rule: An intact sense of smell without a crucial olfactory brain structure

Monday November 11th, 2019 03:49:57 PM
A handful of left-handed women have excellent senses of smell, despite lacking olfactory bulbs.

Magnets for the second dimension

Monday November 11th, 2019 03:49:55 PM
Scientists have developed cube-shaped magnetic building blocks that can be assembled into two-dimensional shapes and controlled by an external magnetic field. They can be used for soft robotics applications.

Potential vitamin and Alzheimer's drug produced in yeast

Monday November 11th, 2019 03:24:07 PM
Scientists prove that ergothioneine, an important compound that may be used to delay the onset of diseases such as Alzheimer's and dementia, can be produced in baker's yeast.

Aging in good health: The inequalities are widening

Monday November 11th, 2019 03:24:03 PM
Life expectancy in Switzerland has been growing steadily for decades. But have these additional years been spent in good health or do they only prolong the ills of an aging population? New results show that although the life expectancy of the Swiss population as a whole is growing, people who only attended compulsory schooling are living longer in poor health.

Quitting Facebook could boost exam results

Monday November 11th, 2019 03:09:31 PM
In research that validates what many parents and educators suspect, students whose grades are below average could boost their exam results if they devoted less time to Facebook and other social networking sites.

First adult molars are 'living fossils' that hold a 'health record' dating back to the womb

Monday November 11th, 2019 03:09:29 PM
Researchers have found that a person's first permanent molars carry a life-long record of health information dating back to the womb, storing vital information that can connect maternal health to a child's health, even hundreds of years later.

Non-volatile control of magnetic anisotropy through change of electric polarization

Monday November 11th, 2019 03:09:27 PM
Researchers controlled the magnetic properties of a metal layer through the electrical polarization of a neighboring metal oxide layer. Computational simulations and experimental measurements revealed that the magnetism of a cobalt-platinum alloying layer strongly depended on the polarization direction of an overlying magnesium zinc oxide layer. The concept of magnetic property control using electrical polarization shows potential to advance the development of nonvolatile magnetic memory.

For older adults, new hepatitis C treatments are safe and effective, study suggests

Monday November 11th, 2019 03:09:23 PM
Thankfully, newer treatments known as interferon-free direct-acting antivirals offer a promising approach to addressing hepatitis C. These medications offer cure rates of more than 90 percent in clinical trials and in real life, but they haven't been studied extensively for older adults.

New study first to reveal growth rates of deep-sea coral communities

Monday November 11th, 2019 03:09:21 PM
Researchers revealed for the first time growth rates of deep-sea coral communities and the pattern of colonization by various species over time scales of centuries to millennia. Age-dated submarine lava flows helped constrain maximum ages of coral communities.

Photosynthesis seen in a new light by rapid X-ray pulses

Monday November 11th, 2019 03:09:18 PM
Researchers investigated the structure of Photosystem I (PSI) with ultrashort X-ray pulses.

Genetic diversity facilitates cancer therapy

Monday November 11th, 2019 03:09:16 PM
Cancer patients with more different HLA genes respond better to treatment.

Drug discount cards could actually cost patients more

Monday November 11th, 2019 03:09:14 PM
New research reveals that brand-name drug discount cards are leading to higher health care spending in Canada -- increased costs that are ultimately passed on to patients.

Mosquito nets: Are they catching more fishes than insects?

Monday November 11th, 2019 03:09:10 PM
Mosquito nets designed to prevent malaria transmission are used for fishing which may devastate tropical coastal ecosystems, according to a new scientific study. The researchers found that most of the fish caught using mosquito nets were smaller than a finger and potentially collect hundreds of individuals.

Gimme shelter: Seven new leech species call freshwater mussels home

Monday November 11th, 2019 01:49:33 PM
The frequent presence of leeches with a hidden lifestyle in the mantle cavity of freshwater mussels has been recorded since the second half of the 19th century. Yet this was, until now, regarded as an accidental phenomenon. Recent research not only reveals seven mussel-associated leech species new to science, but also shows that their association evolved over millions of years.

Finding Nemo's cousins: Meet the little fish that can see UV light

Monday November 11th, 2019 01:49:31 PM
New research reveals anemonefish can see UV light and may use it as a secret channel find their friends and food, while evading predators.

Free Internet access should be a basic human right: Study

Monday November 11th, 2019 01:49:29 PM
Free Internet access must be considered as a human right, as people unable to get online -- particularly in developing countries -- lack meaningful ways to influence the global players shaping their everyday lives, according to a new study.

Decline in ideal heart health begins early for teen girls

Monday November 11th, 2019 01:49:27 PM
Ideal heart health declines between ages 9 and 19 for girls, particularly for black girls and girls from families with lower education and income levels.

Better biosensor technology created for stem cells

Monday November 11th, 2019 01:49:25 PM
A team has created better biosensor technology that may help lead to safe stem cell therapies for treating Alzheimer's and Parkinson's diseases and other neurological disorders. The technology, which features a unique graphene and gold-based platform and high-tech imaging, monitors the fate of stem cells by detecting genetic material (RNA) involved in turning such cells into brain cells (neurons).

Heart disease and cancer risk may be linked

Monday November 11th, 2019 01:49:23 PM
Having a heart attack may increase the risk of developing cancer. A high 10-year atherosclerotic cardiovascular disease (ASCVD) risk score tripled the risk of developing cancer.

Too much ultra-processed food linked to lower heart health

Monday November 11th, 2019 01:49:20 PM
Americans get more than 50% of their daily calories from ultra-processed foods. Measures of heart health decrease as ultra-processed food consumption rises.

Evening eating linked to poorer heart health for women

Monday November 11th, 2019 01:49:18 PM
Women who consumed a higher proportion of their daily intake of calories later in the evening were more likely to be at greater risk for cardiovascular disease than women who did not. Every 1% increase in calories consumed in the evening increased the likelihood of higher blood pressure and body mass index and poorer long-term control of blood sugar.

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