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Why bees soared and slime flopped as inspirations for systems engineering

Posted: 18 Feb 2018 04:21 PM PST

Honeybees gathering nectar inspired an algorithm that eased the burden of host servers handling unpredictable traffic by about 25 percent. Nature can inspire some great engineering, but it can also lead to some flops. Take slime mold: Standard algorithms beat it hands down to model connectivity.

Studying mitosis' structure to understand the inside of cancer cells

Posted: 18 Feb 2018 10:59 AM PST

Cell division is an intricately choreographed ballet of proteins and molecules that divide the cell. During mitosis, microtubule-organizing centers assemble the spindle fibers that separate the copying chromosomes of DNA. While scientists are familiar with MTOCs' existence and the role they play in cell division, their actual physical structure remains poorly understood. Researchers are now trying to decipher their molecular architecture.

What makes circadian clocks tick?

Posted: 18 Feb 2018 10:59 AM PST

Circadian clocks arose as an adaptation to dramatic swings in daylight hours and temperature caused by the Earth's rotation, but we still don't fully understand how they work. Scientists studying the circadian clock of blue-green colored cyanobacteria. The group discovered that how the proteins move hour by hour is central to cyanobacteria's circadian clock function.

Ras protein's role in spreading cancer

Posted: 18 Feb 2018 10:59 AM PST

Protein systems make up the complex signaling pathways that control whether a cell divides or, in some cases, metastasizes. Ras proteins have long been the focus of cancer research because of their role as 'on/off switch' signaling pathways that control cell division and failure to die like healthy cells do. Now, a team of researchers has been able to study precisely how Ras proteins interact with cell membrane surfaces.

Using mutant bacteria to study how changes in membrane proteins affect cell functions

Posted: 18 Feb 2018 10:58 AM PST

Stretchable electronics a 'game changer' for stroke recovery treatment

Posted: 17 Feb 2018 03:48 PM PST

A first-of-its-kind sensor that sticks to the throat and measures speech and swallowing patterns could be a game-changer in the field of stroke rehabilitation.

Newborn babies who suffered stroke regain language function in opposite side of brain

Posted: 17 Feb 2018 03:48 PM PST

A stroke in a baby -- even a big one -- does not have the same lasting impact as a stroke in an adult. A study found that a decade or two after a 'perinatal' stroke damaged the left 'language' side of the brain, affected teenagers and young adults used the right sides of their brain for language.

Ultrathin, highly elastic skin display developed

Posted: 17 Feb 2018 03:48 PM PST

A new ultrathin, elastic display that fits snugly on the skin can show the moving waveform of an electrocardiogram recorded by a breathable, on-skin electrode sensor. Combined with a wireless communication module, this integrated biomedical sensor system -- called 'skin electronics' -- can transmit biometric data to the cloud.

To sleep, perchance to forget

Posted: 17 Feb 2018 03:48 PM PST

People and other animals sicken and die if they are deprived of sleep, but why is sleep so essential? Psychiatrists proposed the 'synaptic homeostasis hypothesis' (SHY) in 2003. This hypothesis holds that sleep is the price we pay for brains that are plastic and able to keep learning new things. A few years ago, they started research that could show direct evidence for their theory. The result offers visual proof of SHY.

Asteroid 'time capsules' may help explain how life started on Earth

Posted: 17 Feb 2018 03:48 PM PST

In popular culture, asteroids play the role of apocalyptic threat, get blamed for wiping out the dinosaurs -- and offer an extraterrestrial source for mineral mining. But for one researcher, asteroids play an entirely different role: that of time capsules showing what molecules originally existed in our solar system. Having that information gives scientists the starting point they need to reconstruct the complex pathway that got life started on Earth.

Personalized curriculum captures students' imagination, interest

Posted: 17 Feb 2018 03:48 PM PST

Focusing on their personal DNA and genealogies, middle school students appear to have learned as much as their peers who used case studies, according to a researcher.