181 articles from TUESDAY 3.9.2019

Scientists have found evidence suggesting that resistance to the 'hunger hormone' ghrelin in the brain is linked to the cognitive impairments and memory loss associated with Alzheimer's disease (AD). The findings, based on observations of postmortem brain-tissue samples from Alzheimer's patients and on experiments with a mouse model of AD, also suggest a possible treatment strategy for the incurable neurodegenerative disorder.

Why didn’t a traffic-light scheme stop the recent fracking-induced tremors near Blackpool?

In theory, the chances of your house being shaken by a fracking-related earthquake are incredibly slim. In the UK, a traffic-light system is designed to minimise the risk of larger quakes occurring, with fracking halted if a tremor of magnitude 0.5ML (local magnitude) or above is recorded. So last week’s 2.1- and 2.9-magnitude fracking-related tremors near Blackpool came as a surprise, given a “red-light” 1.55-magnitude quake had occurred the previous Wednesday, and fracking at Cuadrilla’s Preston New Road site had been suspended.

“It suggests that the traffic-light scheme, even with what seemed like a conservative limit of [magnitude] 0.5, might not be appropriate,” says Stephen Hicks, a seismologist at Imperial College London. Trials in Finland have shown traffic-light schemes can help prevent quakes, so why didn’t it work on this occasion?

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A new study looking at incidence of disease data nationwide from 2000 to 2016 found a shift in obesity-associated cancers (OACs) to younger individuals. Typically, these cancers are diagnosed at higher rates among people older than 65. The most notable findings pertain to increases in these OACs among non-Hispanic Black and Hispanic women and men for whom certain cancers increased by 200-400%.

Slow-crawling Dorian a new kind of threatAfter devastating the Bahamas, Dorian is continuing its long crawl toward the southeast US with slightly weakened winds. Hurricane Dorian stormed into the record books on Sunday when its maximum sustained winds of 185 miles (300 kilometers) per hour tied it in second place with 1998's Gilbert and 2005's Wilma as the most powerful Atlantic hurricane since 1950, according to Colorado State University's Tropical Meteorology Project. First place is still held by 1980's Allen, which had maximum sustained winds of 190 mph.

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Tuesday, September 3, 2019 - 16:00
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NASA has selected three proposals for concept studies of missions that could help us better understand the dynamic space weather system driven by the Sun that manifests near Earth.
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All parents want their children to get the best education possible, so how do school districts allow parents/guardians to have a say in where their child goes to school while still meeting diversity goals for the student body? New research in an upcoming addition of the INFORMS journal Operations Research has a solution, just in time for children to return to school for the 2019-2020 year.

Researchers from Texas A&M University published new research in the INFORMS journal Marketing Science, which shows that retailers' branded mobile apps are very effective in increasing customer engagement, increasing sales on multiple levels, not just on the retailer's website, but also in its stores. At the same time, apps increase the rate of returns, although the increase in sales outweighs the return rates.

Another Atlantic Ocean basin depression formed while Hurricane Dorian is still wreaking havoc on the Bahamas and affecting the southeastern U.S. Infrared imagery from NASA's Aqua satellite shows that Tropical Depression 7 in the western Gulf of Mexico has developed powerful thunderstorms with heavy rain capabilities. That potential for heavy rainfall includes southern Texas and northeastern Mexico.

An explosion is a complex event involving quickly changing temperatures, pressures and chemical concentrations. In a paper in the Journal of Applied Physics a special type of infrared laser, known as a swept-wavelength external cavity quantum cascade laser (swept-ECQCL), is used to study explosions. This versatile instrument has a broad wavelength tuning range that allows the measurement of multiple chemical substances, even large molecules, in an explosive fireball.