365NEWSX
365NEWSX
Subscribe

Welcome

How the giant stinging tree of Australia can inflict months of agony - Nature.com

How the giant stinging tree of Australia can inflict months of agony - Nature.com

How the giant stinging tree of Australia can inflict months of agony - Nature.com
Sep 17, 2020 5 mins, 18 secs

17 September 2020.

Irina Vetter and Thomas Durek at the University of Queensland in Brisbane and their colleagues ventured out to harvest leaves of wild D.

The authors, all of them Dendrocnide victims, hope their findings spur research to develop a gympietide antidote.

16 September 2020.

Pulling information from global data sets on clothing lifetime, washing machine usage and waste-water treatment, Jenna Gavigan and her colleagues at the University of California, Santa Barbara, estimated the total mass of microfibres introduced to the environment between 1950 and 2016 to be 4.3 million to 7 million tonnes.

And as waste-water treatments become more widespread in low-income countries, a growing proportion of the fibres are ending up in these terrestrial environments, the authors say.

14 September 2020.

Amy Bogaard at the University of Oxford, UK, and her colleagues examined the wheat and barley in 5 of the silo’s 32 chambers.

The authors say the silo contained grain collected as tax from people living across Hittite lands, and was a symbol of the Hittite king’s wealth — until fire devastated the structure shortly after its construction, leading the regime to abandon the wreckage.

Credit: Getty.

14 September 2020.

Masamichi Hayashi at the National Institute of Information and Communications Technology in Suita, Japan, and Richard Ivry at the University of California, Berkeley, scanned volunteers’ brains while showing them a grey spot on a screen for a defined period of time, 30 times in a row.

Credit: Getty.

11 September 2020.

Dan Shugar at the University of Calgary in Canada and his colleagues analysed more than 250,000 images taken by the Landsat satellites.

The researchers then calculated how much water was stored in these lakes.

11 September 2020.

The answer, researchers say, is that the minuscule birds go into torpor — a state of reduced metabolic activity and temperature that is not unlike hibernation, but only one night long.

In an effort to find out more, Blair Wolf at the University of New Mexico in Albuquerque and his colleagues captured 26 hummingbirds, encompassing 6 species, from the Andean forest, and observed them overnight.

The researchers speculate that in cold weather, torpor might extend over days in some species, becoming true hibernation.

Among the galactic clusters examined by researchers seeking to understand the distribution of dark matter is MACSJ1206 (spread across centre of image), which distorts other galaxies’ light into smears and arcs.

10 September 2020.

But Hubble’s images also enabled a finer mapping, revealing dozens of smaller lenses — like “additional bubbles of little lenses”, says co-author Priyamvada Natarajan at Yale University in New Haven, Connecticut.

These ‘subhaloes’ were more numerous, and their lensing was on average ten times stronger, than predicted by computer simulations of clusters formed according to existing theories of dark matter, the authors write.

Science (2020).

10 September 2020.

To develop an early indicator of ozone damage, Trisha Andrew and her colleagues at the University of Massachusetts Amherst capitalized on one of the pollutant’s effects: when ozone kills a leaf’s cells, the leaf tissue becomes less electrically conductive.

The researchers printed electrodes one micrometre thick onto leaves cut from apple trees and vines of Merlot, Chardonnay and Concord grapes.

After measuring the leaves’ conductivity through the electrodes, the researchers observed that it was indeed lower at higher ozone levels.

The researchers envision tattooing leaves on living plants to monitor ozone exposure in vineyards and orchards.

07 September 2020.

To circumvent this problem, Justus Ndukaife and his colleagues at Vanderbilt University in Nashville, Tennessee, fashioned a gold film patterned with tiny holes and placed it inside a sample chamber that they then filled with fluid.

The researchers captured a protein molecule roughly 7 nanometres wide in an island of motionless fluid between these flows.

The approach should allow researchers to grasp and study individual biological objects, and even sort them by size.

03 September 2020.

Science (2020).

02 September 2020.

The authors determined that airblasts are most likely to follow rock avalanches on steep mountainsides.

01 September 2020.

Thomas Booth and Joanna Brück, then at the University of Bristol, UK, generated new radiocarbon dates for 54 human bones and associated animal bones, charcoal and one hazelnut shell collected at British archaeological sites dating from 2500 to 600 BC.

This treatment suggests that human remains were often revered, rather than viewed with horror or disgust, the authors say.

27 August 2020.

But while studying electrically conductive Geobacter sulfurreducens bacteria for use in fuel cells, Uwe Schröder and his colleagues at the Technical University of Braunschweig in Germany found that the microbes flourished on copper, forming tough layers known as biofilms.

The researchers hope their findings can help to improve the design and performance of fuel cells that take advantage of such electrically conductive bacteria.

26 August 2020.

The researchers served the mice a variety of liquids while monitoring the neurons’ activity

25 August 2020

Liang Ning at Nanjing Normal University in China, Zhengyu Liu at Ohio State University in Columbus and their colleagues looked at records of past temperatures, as well as ice-core records and climate models, to unravel the mystery

24 August 2020

But now the species has been found in the neighbouring Republic of Djibouti, according to Steven Heritage at Duke University’s lemur centre in Durham, North Carolina, and his colleagues

21 August 2020

Da-Yong Jiang at Peking University in Beijing, Ryosuke Motani at the University of California, Davis, and their colleagues examined a mass of bones found in the stomach of an ichthyosaur belonging to the genus Guizhouichthyosaurus

21 August 2020

Researchers have found a way to harness these charges to harvest an optimal amount of energy from raindrops

Hao Wu, now at the Chinese University of Hong Kong, and her colleagues created an energy extractor that exploits a voltage difference between two surfaces: a Teflon-covered surface that has a permanent negative charge and, underneath it, a positively charged conducting layer

Such ‘electrical nanogenerators’ could help to power small, self-recharging devices, the authors say

20 August 2020

Ivan Nagelkerken at the University of Adelaide, Australia, and colleagues recreated a marine ecosystem in a series of 1,800-litre tanks that held everything from algae to invertebrates and fish

Science (2020)

Credit: Getty

19 August 2020

When caring for Black babies, Black doctors outperform their white colleagues at making sure the infants survive

Researchers have started to recognize that racial bias might be an important reason behind this trend

To put that to the test, Brad Greenwood at George Mason University in Fairfax, Virginia, and colleagues obtained data for 1.8 million hospital births in Florida between 1992 and 2015

The results, the authors argue, represent an urgent call to diversify the medical workforce and to raise awareness about the role of racial bias in health-care inequity

Summarized by 365NEWSX ROBOTS

RECENT NEWS

SUBSCRIBE

Get monthly updates and free resources.

CONNECT WITH US

© Copyright 2024 365NEWSX - All RIGHTS RESERVED