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134,350 articles from ScienceDaily

Patterning method could pave the way for new fiber-based devices, smart textiles

Multimaterial fibers that integrate metal, glass and semiconductors could be useful for applications such as biomedicine, smart textiles and robotics. But because the fibers are composed of the same materials along their lengths, it is difficult to position functional elements, such as electrodes or sensors, at specific locations. Now, researchers have developed a method to pattern...

How dolphins avoid 'the bends'

New evidence indicates that dolphins are able to consciously slow down their heart rates when preparing to dive, and can even adjust their heart rates according to the length of their intended dive. This allows them to conserve oxygen and adjust their body to the changing pressure as they dive, therefore avoiding issues such as ''the bends''.


Simple new testing method aims to improve time-release drugs

Engineers filled a glass tube bent like a tuning fork, kept vibrating by a circuit at its resonance frequency, with simulated stomach and intestine contents and passed an over-the-counter time-release drug granule through the tube. They observed a brief change in the frequency. When plotted, they could compare the peaks of resonance frequency against the time to learn the buoyant mass of the drug...

Can we harness a plant's ability to synthesize medicinal compounds?

Anthraquinones are a class of naturally occurring compounds prized for their medicinal properties, as well as for other applications, including ecologically friendly dyes. Despite wide interest, the mechanism by which plants produce them has remained shrouded in mystery until now. New work reveals a gene responsible for anthraquinone synthesis in plants. Their findings could help scientists...

Commonly used antibiotic shows promise for combating Zika infections

Researchers used a variety of advanced drug screening techniques to test out more than 10,000 compounds in search of a cure. To their surprise, they found that the widely used antibiotic methacycline was effective at preventing brain infections and reducing neurological problems associated with the virus in mice.

Clean Air Act saved 1.5 billion birds

US pollution regulations meant to protect humans from dirty air are also saving birds. So concludes a new continent-wide study. Study authors found that improved air quality under a federal program to reduce ozone pollution may have averted the loss of 1.5 billion birds during the past 40 years.

Memories of past events retain remarkable fidelity even as we age

Even though people tend to remember fewer details about past events as time goes by, the details they do remember are retained with remarkable fidelity, according to a new study. This finding holds true regardless of the age of the person or the amount of time that elapsed since the event took place.

CRISPRi screens reveal sources of metabolic robustness in E. coli

Metabolic robustness, the ability of a metabolic system to buffer changes in its environment, is not always a welcome feature for microbiologists: it interferes with metabolic engineering or prevents that antibiotics kill bacteria. Therefore it is important to understand the mechanisms that enable metabolic robustness. A massively parallel CRISPRi screen demonstrated that E. colimetabolism is very...

Researchers go underwater to study how sponge species vanished

Researchers embarked on an underwater journey to solve a mystery: Why did sponges of the Agelas oroides species, which used to be common in the shallow waters along the Mediterranean coast of Israel, disappear? The researchers believe that the main reason for the disappearance of the sponges was the rise in seawater temperatures during the summer months, which in the past 60 years have risen by...

Strengthening the climate change scenario framework

Over the past decade, the climate change research community developed a scenario framework that combines alternative futures of climate and society to facilitate integrated research and consistent assessment to inform policy. An international team of researchers assessed how well this framework is working and what challenges it faces.