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Laser diode emits deep UV light

Saturday January 18th, 2020 05:00:00 AM
Nagoya University researchers say they have designed a laser diode that emits the shortest-wavelength ultraviolet light to-date, with potential applications in disinfection, dermatology, and DNA analyses.

Male sparrows are less intimidated by the songs of aging rivals

Friday January 17th, 2020 05:00:00 AM
Few singers reach their sunset years with the same voice they had in younger days. Songbirds are no different. New research reveals that elderly swamp sparrows don't sound quite like they used to -- nor do they strike the same fear in other males who may be listening in. Humans are remarkably good at guessing a person's age by their voice. But this is the first time the phenomenon has been demonstrated in wild animals.

Scurvy is still a thing in Canada

Friday January 17th, 2020 05:00:00 AM
McMaster University researchers surveyed the data of patients of Hamilton's two hospital systems over nine years and found 52 with low Vitamin C levels. This included 13 patients who could be diagnosed as having scurvy, and an additional 39 who tested positive for scurvy but did not have documented symptoms.

New tumor-driving mutations discovered in the under-explored regions of the cancer genome

Friday January 17th, 2020 05:00:00 AM
In an unprecedented pan-cancer analysis of whole genomes, researchers at the Ontario Institute for Cancer Research (OICR) have discovered new regions of non-coding DNA that, when altered, may lead to cancer growth and progression.

What is an endangered species?

Friday January 17th, 2020 05:00:00 AM
What makes for an endangered species classification isn't always obvious.

Faking emotions at work does more harm than good

Friday January 17th, 2020 05:00:00 AM
Faking your emotions at work to appear more positive likely does more harm than good, according to a University of Arizona researcher. Allison Gabriel with the Eller College of Management says those who try to be genuinely positive with their co-workers reap 'significant benefits.'

Prosecutors' race, class bias may not drive criminal justice disparities

Friday January 17th, 2020 05:00:00 AM
Years of observational studies suggest that prosecutors' race and class biases are among the primary drivers for disparities in criminal justice. Recent University of Arizona-led research indicates otherwise.

NASA water vapor imagery shows Tino's heavy rain potential over Fiji

Friday January 17th, 2020 05:00:00 AM
When NASA's Aqua satellite passed over the Southern Pacific Ocean it gathered water vapor data that provided information about the intensity of Tropical Cyclone Tino.

Human fetal lungs harbor a microbiome signature

Friday January 17th, 2020 05:00:00 AM
The lungs and placentas of fetuses in the womb -- as young as 11 weeks after conception -- already show a bacterial microbiome signature, which suggests that bacteria may colonize the lungs well before birth. This first-time finding deepens the mystery of how the microbes or microbial products reach those organs before birth and what role they play in normal lung and immune system development.

When David poses as Goliath

Friday January 17th, 2020 05:00:00 AM
Observations have shown that stellar black holes typically have masses of about ten times that of the Sun. Recently, Chinese astronomers claimed to have discovered a black hole as massive as 70 solar masses, which, if confirmed, would challenge the current view of stellar evolution. Astronomers from the Universities of Erlangen-Nürnberg and Potsdam discovered that it may not necessarily be a black hole at all, but possibly a massive neutron star or an 'ordinary' star.

UVA engineering professor Jack W. Davidson named an IEEE fellow

Friday January 17th, 2020 05:00:00 AM
UVA Engineering computer science professor Jack W. Davidson has been named an Institute of Electrical and Electronics Engineers Fellow in recognition of his contributions to compilers, computer security and computer science education.

UVA professor Matthew B. Dwyer named a fellow by the Association for Computing Machinery

Friday January 17th, 2020 05:00:00 AM
The Association for Computing Machinery has named Matthew B. Dwyer, a University of Virginia professor of computer science, a fellow. Fellowships are conferred to association members for technological accomplishments that help define the digital age and improve professional and personal lives. Association for Computing Machinery Fellows comprise an elite group that represents less than 1% of the association's global membership.

NJIT scientists measure the evolving energy of a solar flare's explosive first minutes

Friday January 17th, 2020 05:00:00 AM
In 2017, a massive new region of magnetic field erupted on the sun's surface next to an existing sunspot. The powerful collision of magnetic energy produced a series of solar flares, causing turbulent space weather conditions at Earth. Scientists have now pinpointed for the first time exactly when and where the explosion released the energy that heated spewing plasma to energies equivalent to 1 billion degrees in temperature.

Reward improves visual perceptual learning -- but only after people sleep

Friday January 17th, 2020 05:00:00 AM
A new study from Brown researchers finds that rewards improve performance on a visual perceptual task only if participants sleep after training.

Spider-Man-style robotic graspers defy gravity

Friday January 17th, 2020 05:00:00 AM
Traditional methods of vacuum suction and previous vacuum suction devices cannot maintain suction on rough surfaces due to vacuum leakage, which leads to suction failure. Researchers Xin Li and Kaige Shi developed a zero-pressure difference method to enhance the development of vacuum suction units. Their method overcame leakage limitations by using a high-speed rotating water ring between the surface and suction cup to maintain the vacuum. They discuss their work in Physics of Fluids.

Study: Critical care improvements may differ depending on hospital's patient population

Friday January 17th, 2020 05:00:00 AM
A new study led by researchers at Beth Israel Deaconess Medical Center reveals that while critical care outcomes in ICUs steadily improved over a decade at hospitals with few minority patients, ICUs with a more diverse patient population did not progress comparably.

New scheduling tool offers both better flight choices and increased airline profits

Friday January 17th, 2020 05:00:00 AM
Researchers from Dartmouth and the Massachusetts Institute of Technology (MIT) have developed an original approach to flight scheduling that, if implemented, could result in a significant increase in profits for airlines and more flights that align with passengers' preferences. The approach is presented in a paper, 'Airline Timetable Development and Fleet Assignment Incorporating Passenger Choice,' recently published in Transportation Science, the leading journal in the field of transportation analysis.

Chemists allow boron atoms to migrate

Friday January 17th, 2020 05:00:00 AM
Organic molecules with atoms of the semi-metal boron are important building blocks for synthesis products to produce drugs and agricultural chemicals. However, the conversion of substances commonly used in industry often results in the loss of the valuable boron unit, which can replace another atom in a molecule. Chemists at Münster University now introduce carbon-carbon couplings in which the boron atom is retained. The study has been published in the journal Chem.

Researchers find that cookies increase ad revenue for online publishers

Friday January 17th, 2020 05:00:00 AM
How long has it been since you logged onto a Web site and you were prompted to decide whether to opt out of 'cookies' that the site told you will enhance your online experience? Minutes? Hours?

Study: Neuron found in mice could have implications for effective diet drugs

Friday January 17th, 2020 05:00:00 AM
A CALCR cell found in mice may stop feeding without subsequential nauseating effects, as well as influence the long term intake of food.


 

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Last updated January 15, 2020