Selasa, 07 Juli 2015

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News


Two biomarkers linked to severe heart disease found

Posted: 06 Jul 2015 01:38 PM PDT

A first-of-its-kind animal model to pinpoint two biomarkers that are elevated in the most severe form of coronary disease has been developed by scientists.

Killer sea snail a target for new drugs

Posted: 06 Jul 2015 01:16 PM PDT

Pain treatment researchers have discovered thousands of new peptide toxins hidden deep within the venom of just one type of Queensland cone snail. Researchers hope the new molecules will be promising leads for new drugs to treat pain and cancer.

Perennial biofuel crops' water consumption similar to corn

Posted: 06 Jul 2015 12:49 PM PDT

Converting large tracts of the Midwest's marginal farming land to perennial biofuel crops carries with it some key unknowns, including how it could affect the balance of water between rainfall, evaporation and movement of soil water to groundwater.

Blacklegged tick populations have expanded via migration, biologists show

Posted: 06 Jul 2015 11:32 AM PDT

In a new study, biologists used genetic and phylogeographic analyses to determine the origin and recent migratory history of newly discovered tick populations in the Northeastern United States. Their findings indicate that the ticks moved into new areas from established populations, mainly through short-distance, local moves.

How to rule a gene 'galaxy': A lesson from developing neurons

Posted: 06 Jul 2015 10:57 AM PDT

A new study has found that many RNA messengers encoding neuronal proteins contain specialized sequences that can promote their destabilization in the presence of an RNA-binding protein called tristetraprolin, or TTP.

Producing biodegradable plastic just got cheaper, greener

Posted: 06 Jul 2015 08:42 AM PDT

Biodegradable drinking cups or vegetable wrapping foil: the bioplastic known as polylactic acid (PLA) is already a part of our everyday lives. And yet, PLA is not yet considered a full alternative to traditional petroleum-based plastics, as it is costly to produce. Researchers now present a way to make the PLA production process more simple and waste-free.

Grey squirrels are quick learners, study shows

Posted: 06 Jul 2015 08:42 AM PDT

They may be viewed by some as an invasive species or a commonplace pest of public parks, but a new study has shown that grey squirrels are actually quick learners capable of adapting tactics to improve efficiency and reap the best rewards.

Tundra study uncovers impact of climate warming in the Arctic

Posted: 06 Jul 2015 08:42 AM PDT

Significant changes in one of Earth's most important ecosystems are not only a symptom of climate change, but may fuel further warming, research suggests. One of the biggest studies to date of key vegetation in the Arctic tundra provides strong evidence that dramatic changes in the region are being driven by climate warming.

Autonomous taxis would deliver significant environmental and economic benefits

Posted: 06 Jul 2015 08:41 AM PDT

Imagine a fleet of driverless taxis roaming your city, ready to pick you up and take you to your destination at a moment's notice. While this may seem fantastical, it may be only a matter of time before it becomes reality. And according to a new study such a system would both be cost-effective and greatly reduce per-mile emissions of greenhouse gases.

Risk of interbreeding due to climate change lower than expected

Posted: 06 Jul 2015 08:41 AM PDT

A surprising study of North and South American mammals, birds and amphibians finds that only about 6 percent of closely related species whose ranges do not currently overlap are likely to come into contact by the end of this century.

Rope-chewing technique an easy way to screen monkeys for disease

Posted: 06 Jul 2015 06:24 AM PDT

What a piece of rope and strawberry jam have to do with preventing the spread of zoonotic disease.

Mechanism of biological multi-fuel engine

Posted: 06 Jul 2015 06:13 AM PDT

Researchers have constructed the atomic model structure of the protein complex that corresponds to the stator (stationary part of a motor that surrounds the rotating part of a motor) of the E. coli flagellar motor for the first time by molecular simulation based on previously published experimental data, and elucidated the mechanism by which ions, including hydrogen ions (protons), are transferred through the stator.

Geology: Slow episodic slip probably occurs in the plate boundary

Posted: 06 Jul 2015 06:13 AM PDT

Scientists have discovered slow-moving low-frequency tremors which occur at the shallow subduction plate boundary in Hyuga-nada, off east Kyushu. This indicates the possibility that the plate boundary in the vicinity of the Nankai Trough is slipping episodically and slowly (over days or weeks) without inducing a strong seismic wave.

Drug inhibits infection that causes watery diarrhea

Posted: 06 Jul 2015 06:13 AM PDT

Researchers have demonstrated that heparin, a type of sulfated polysaccharide, inhibits infection with Cryptosporidium parvum, a protozoan that causes diarrhea in humans and other mammals. This will facilitate the development of anti-cryptosporidial agents.

Does that 'green' plasticizer make my PVC flexible enough for you?

Posted: 06 Jul 2015 06:00 AM PDT

A study of an eco-friendly solvent helping to make PVC plastic more flexible reveals the molecular-level interaction of hydrogen bonds between the two ingredients. What gives plastic objects their flexibility and reduces their brittleness is the concentration of plasticizer. For example, a chemical solvent of the phthalate family called DOP is often used. The trouble is there are concerns that phthalates present health risks. So there is a demand for more alternatives. Now, scientists have examined the effect of using DEHHP, a new eco-friendly plasticizer, used in combination with PVC.

Five-day space weather forecasts?

Posted: 06 Jul 2015 06:00 AM PDT

Coronal mass ejections (CME), billion-ton solar plasma eruptions moving towards Earth at up to 2500 kilometers per second, can cause extensive and expensive disruption by damaging power, satellite and communication networks. A UK consortium is proposing an operational mission, called Carrington-L5, to give a five-day warning of hazardous solar activity that could inflict severe damage to our infrastructure.

Reconstructing the Michelangelo bronzes

Posted: 06 Jul 2015 06:00 AM PDT

Engineers, imagers and anatomists are helping Art historians to try to understand how the two mysterious Renaissance bronzes were made and why they look the way they do by making accurate replicas of the originals. The latest technology -- neutron imaging, XRF analysis, 360 degree laser scanning, 3D printing, and real-time x-ray videography -- has been involved in this Renaissance 'whodunnit'.

Learning from biology to accelerate discovery

Posted: 06 Jul 2015 05:53 AM PDT

A new review paper explores the strategies nature employs to achieve different functions and the mechanics at play within those functions. Surveying everything from sea cucumbers and Venus flytraps to human muscles and trees, the review paper broadly explores the strategies that biology employs to create different functions and the mechanics at play within those functions.

Researchers go with the flow to help protect endangered European eel

Posted: 02 Jul 2015 04:39 AM PDT

New research is paving the way to protect the endangered European eel as they migrate through rivers to the ocean. The European eel, a fish of high cultural, commercial and conservation concern, has suffered a dramatic decline over recent decades, with the number of juvenile fish returning to rivers down by over 90 per cent. While several explanations (including overfishing, pollution and climate change) have been proposed for the cause of this demise, one of the key factors is river infrastructure, such as hydropower stations, that can injure or kill the long bodied adult fish as they migrate to the ocean and eventually to the Sargasso Sea where they spawn.
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