السبت، 26 مارس 2016

ScienceDaily: Top News

ScienceDaily: Top News


One atom can make a difference: Hydrogen-bonding pairing helps design better drugs to neutralize gut

Posted: 25 Mar 2016 12:17 PM PDT

Hydrogen-bonding pairing regulates protein-ligand affinity; helps improve drug design.

Simple solutions for overweight kids to lose weight as the weather warms up

Posted: 25 Mar 2016 10:22 AM PDT

Obesity has more than doubled in children and tripled in adolescents in the past 30 years nationwide. One expert says that the most effective approach to addressing weight loss in children are lifestyle-based modifications that involve parents.

Metallic ink revealed in Herculaneum papyri

Posted: 25 Mar 2016 10:20 AM PDT

Thanks to a novel, non-invasive X-ray imaging technique (3D phase contrast tomography), scientists were able to decipher words and reconstitute an almost complete Greek alphabet from inside the very badly damaged and rolled papyrus scrolls, carbonized during the eruption of Mount Vesuvius in 79 AD. Since this discovery, scientists have continued to reveal the secrets of the Herculaneum papyri using synchrotron light. This latest scientific discovery deeply modifies our knowledge of Greek and Latin writing in Antiquity and opens new research perspectives for the study of these precious scriptures.

Micro-sanctuaries key to survival of wildlife in human-dominated landscapes

Posted: 25 Mar 2016 10:14 AM PDT

Maintaining even the tiniest wildlife sanctuaries will help preserve some biodiversity in increasingly urbanized landscapes, a new report suggests.

Cells in standby mode

Posted: 25 Mar 2016 10:14 AM PDT

Normally, cells are highly active and dynamic: in their liquid interior, called the cytoplasm, countless metabolic processes occur in parallel, proteins and particles jiggle around wildly. If, however, those cells do not get enough nutrients, their energy level drops. During such unfavorable conditions, the cytoplasm can solidify and protect the cell from death, new research shows.

Phone-based laser rangefinder works outdoors

Posted: 25 Mar 2016 08:01 AM PDT

A new infrared depth-sensing system is being presented by researchers, built from a smartphone with a $10 laser attached to it, that works outdoors as well as in.

Autonomous Cloud Seeding Aircraft Successfully Tested in Nevada

Posted: 25 Mar 2016 06:39 AM PDT

Scientists and unmanned aircraft systems (UAS) engineers have successfully flight tested the first-ever autonomous cloud seeding aircraft platform. Cloud seeding flare tests were deployed from Drone America's DAx8 UAS aircraft flown in Reno in late January.

Looking at the bacteria inside: New method of viewing TB bacteria

Posted: 25 Mar 2016 06:39 AM PDT

Although tuberculosis (TB) is commonly thought of as being a disease that mainly affects nineteenth century poets and Victor Hugo characters, it is still the second-most common cause of mortality from an infectious disease in the world, killing nearly three people every minute.

Biomass offsets little or none of permafrost carbon release

Posted: 25 Mar 2016 06:38 AM PDT

An expert assessment helps quantify the amount of carbon dioxide that will be released in the Arctic following climate-related changes in the biomass.

Change by the bundle: Study shows people are capable of multiple, simultaneous life changes

Posted: 25 Mar 2016 06:37 AM PDT

People are capable of multiple, simultaneous life changes, a new study suggests. Participants in the study were tested on a variety of factors, including physical fitness, cholesterol and triglyceride levels, working memory capacity, reading comprehension and more. They also underwent magnetic resonance imaging (MRI) of their brains to examine areas known to be associated with a range of cognitive functions.

New research ensures car LCDs work in extreme cold, heat

Posted: 25 Mar 2016 06:37 AM PDT

New liquid crystal mixtures overcome a limitation of the many LCD displays proliferating in automobiles: The current technology becomes sluggish and blurry in extreme temperatures.

Curcumin may help overcome drug-resistant tuberculosis

Posted: 25 Mar 2016 06:37 AM PDT

New research indicates that curcumin -- a substance in turmeric that is best known as one of the main components of curry powder -- may help fight drug-resistant tuberculosis.

Read my lips: New technology spells out what's said when audio fails

Posted: 25 Mar 2016 06:37 AM PDT

New lip-reading technology could help in solving crimes and provide communication assistance for people with hearing and speech impairments.

Boost fundraising with something simple: Sandpaper

Posted: 25 Mar 2016 06:37 AM PDT

Researchers have discovered that touching rough surfaces increases awareness of discomfort in our surroundings, which can trigger empathy. This leads to more interest in donating to charities.

The first 3-D atlas of the extinct dodo

Posted: 25 Mar 2016 06:36 AM PDT

For the first time since its extinction, a 3-D atlas of the skeletal anatomy of the dodo has been created, based upon two exceptional dodo skeletons that have remained unstudied for over a century. This atlas represents the culmination of nearly five years of work and thousands of human-hours of digital investigation on the only two associated, near-complete skeletons of the dodo in existence.

Antarctic birds recognize individual humans

Posted: 25 Mar 2016 06:36 AM PDT

Brown skuas in Antarctica can discriminate individual people, even though they normally do not see many people around. Scientists studied brown skuas living in Antarctica.

Parents think life quality is worse for teens, adults born very premature

Posted: 25 Mar 2016 06:36 AM PDT

Parents of very premature babies are more worried about their grown up children's lives than mothers and fathers whose babies were born full term.

Wnt secretion preventing drugs may reduce renal fibrosis, study shows

Posted: 25 Mar 2016 06:36 AM PDT

Renal fibrosis or the scarring of kidneys, following an injury, reduces their function and can cause kidney disease to progressively worsen. In a recent study, researchers have shown that drugs that target Wnt secretion by inhibiting Porcupine, a protein usually targeted for cancer treatment, may reduce renal fibrosis and protect the kidneys.

Self-repairing cancer cells future of cancer treatments

Posted: 24 Mar 2016 12:01 PM PDT

A research group has been studying cancer cells' ability to migrate through to tight spaces and self-repair to develop both treatment and diagnostic solutions for the millions of people who deal with cancer every day.

Researcher improves crop performance with new biotechnology

Posted: 24 Mar 2016 11:59 AM PDT

Researchers have discovered a way to enhance a plant's tolerance to stress, which in turn improves how it uses water and nutrients from the soil. These improvements increase plant biomass and yield. This discovery could be instrumental in agriculture and food security by improving crop sustainability and performance.

Solar cell material can recycle light to boost efficiency

Posted: 24 Mar 2016 11:54 AM PDT

Scientists have discovered that a highly promising group of materials known as hybrid lead halide perovskites can recycle light -- a finding that they believe could lead to large gains in the efficiency of solar cells.

Creation of minimal cell with just the genes needed for independent life

Posted: 24 Mar 2016 11:54 AM PDT

Researchers have designed and synthesized a minimal bacterial genome, containing only the genes necessary for life, and consisting of just 473 genes.

Could free streaming ultimately cost consumers?

Posted: 24 Mar 2016 11:37 AM PDT

That "all you can stream" offer from your Internet service provider sounds like a bargain, but it could have a hidden cost, suggests authors of a new report.

Expedited Medicaid access increases use of mental health services, but does not reduce recidivism for people recently released from prison

Posted: 24 Mar 2016 11:37 AM PDT

Providing expedited access to Medicaid to people with serious mental illness as they are released from prison increases their use of mental health and general medical services, but does not reduce criminal recidivism, according to new research.

Unraveling the mystery of stem cells

Posted: 24 Mar 2016 11:32 AM PDT

How do neurons become neurons? They all begin as stem cells, undifferentiated and with the potential to become any cell in the body. Now neuroscientists document some of the first steps in the process by which a stem cell transforms into different cell types.

Moving microswimmers using magnetic vortices

Posted: 24 Mar 2016 11:32 AM PDT

Scientistshave discovered a way to use a microscopic, swirling flow to rapidly clear a circle of tiny bacteria or swimming robots.

New knowledge for managing tree-killing bark beetles

Posted: 24 Mar 2016 10:34 AM PDT

Outbreaks of the southern pine beetle can't be stopped by its main predator, but risks to forests from this tree-killing insect can be predicted with a simple, inexpensive monitoring program, according to a study.

Water science leads ecological survival battle

Posted: 24 Mar 2016 10:34 AM PDT

Scientists have developed tools to help restore vital ecosystems found in tropical mangrove forests around the world. The team conducted fieldwork in three mangrove regions in south-east Asia: Can Gio and Ca Mau, in Vietnam and Mahakam, in Indonesia.

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