Friday 17 May 2019

Researchers find way to build potassium-oxygen batteries that last longer

Researchers have built a more efficient, more reliable potassium-oxygen battery, a step toward a potential solution for energy storage on the nation's power grid and longer-lasting batteries in cell phones and laptops.

* This article was originally published here

To win online debates, social networks worth a thousand words

Want to win an argument online? Bolstering your social network may be more helpful than rehearsing your rhetorical flourishes.

* This article was originally published here

HP Enterprise buying supercomputer star Cray

Hewlett Packard Enterprise (HPE) on Friday announced a $1.3 billion deal to buy supercomputer maker Cray, part of a move to expand into data analysis from connected devices .

* This article was originally published here

Extraordinarily transparent compact metallic metamaterials

In materials science, achromatic optical components can be designed with high transparency and low dispersion. Materials scientists have shown that although metals are highly opaque, densely packed arrays of metallic nanoparticles with more than 75 percent metal by volume can become more transparent to infrared radiation than dielectrics such as germanium. Such arrays can form effective dielectrics that are virtually dispersion-free across ultra-broadband ranges of wavelengths to engineer a variety of next-generation metamaterial-based optical devices.

* This article was originally published here

How the Trump prescription for drug prices transparency could make health care well again

When it comes to the prescription drugs America use, too often money is the last thing consumers think about. Formulaic prescription drug ads are part of the reason why.

* This article was originally published here

Black women more likely to die of breast cancer, especially in the South

When Felicia Mahone was 27, she felt her breast and found a mass. Breast cancer had killed nearly all the women in her family—her mother, two aunts and two cousins. Her doctor, though, downplayed the lump, assuring her everything would be all right.

* This article was originally published here

Making the best of sparse information

New findings reported by LMU researchers challenge a generally accepted model of echolocation in bats. They demonstrate that bats require far less spatial information than previously thought to navigate effectively.

* This article was originally published here

Metals influence C-peptide hormone related to insulin

Metals such as zinc, copper and chromium bind to and influence a peptide involved in insulin production, according to new work from chemists at the University of California, Davis. The research is part of a new field of "metalloendocrinology" that takes a detailed look at the role of metals in biological processes in the body.

* This article was originally published here

Fuel subsidies defy green trend amid rising climate alarm

Even as warnings of climate catastrophe and calls for greener economies grow ever louder, the world is still spending hundreds of billions of dollars every year to subsidise the fossil fuels that are causing the planet to overheat.

* This article was originally published here

Researchers imagine a cheaper, fairer marketplace for digital goods

E-commerce is sizzling. Last year, consumers spent more than $517 billion online with US merchants, up 15 percent from the year before, according to Internet Retailer.

* This article was originally published here

Facebook breakup could boost China rivals: Sandberg

Facebook chief operating officer Sheryl Sandberg said Friday a breakup of big US technology would not address "underlying issues" facing the sector and suggested that such a move could help rivals in China.

* This article was originally published here

Thresholds found for unilateral optic nerve lesions in MS

(HealthDay)—A new anatomic threshold may be useful for identifying unilateral optic nerve lesions in patients with multiple sclerosis, according to a study published in the May issue of the Annals of Neurology.

* This article was originally published here

Some women with psychotic disorders are more vulnerable around the time of menstruation

Mothers on the Edge, a recent documentary by Louis Theroux, told the stories of four new mothers admitted to specialist mental health units for a range of serious conditions including anxiety, depression and psychosis—triggered by recent motherhood.

* This article was originally published here

Changes in subsistence hunting threaten local food security

Scientists with the Universidad San Francisco de Quito and WCS Ecuador Program publishing in the journal BioTropica say that subsistence hunting in Neotropical rain forests—the mainstay of local people as a source of protein and a direct connection to these ecosystems—is in jeopardy from a variety of factors.

* This article was originally published here

Quinn on Nutrition: Carbs—how low can we go?

"Fruit has carbs? I had no idea," a stunned patient told me recently.

* This article was originally published here

Study finds Adelaide's depression hot spots

Poorer, disconnected suburbs are more likely to have depression 'hot spots', according to a new study focused on Adelaide from The Australian National University (ANU).

* This article was originally published here

Mining 25 years of data uncovers a new predictor of age of onset for Huntington disease

Investigators at the University of British Columbia (UBC)/Centre for Molecular Medicine & Therapeutics (CMMT) and BC Children's Hospital have examined more than 25 years of data to reveal new insights into predicting the age of onset for Huntington disease.

* This article was originally published here

Stop gambling with black box and explainable models on high-stakes decisions

As the buzzwords "machine learning" continue to grow in popularity, more industries are turning to computer algorithms to answer important questions, including high-stakes fields such as healthcare, finance and criminal justice. While this trend can lead to major improvements in these realms, it can also lead to major problems when the machine learning algorithm is a so-called "black box."

* This article was originally published here

Scientists propose rethinking 'endangered species' definition to save slow-breeding giants

Conservation decisions based on population counts may fail to protect large, slow-breeding animals from irrevocable decline, according to new research coinciding with Endangered Species Day.

* This article was originally published here

Stigma deterring elite athletes with mental health issues from seeking help

Stigma is the main reason why elite athletes with mental health issues don't seek the help they need, finds a summary of the available evidence, published in a special issue of the British Journal of Sports Medicine devoted to the topic.

* This article was originally published here