6,170 articles mezi dny 1.8.2020 a 31.8.2020

The structural basis of Focal Adhesion Kinase activation on lipid membranes unravelled

* Patients with glioma - a very common type of tumour originating in the brain - see improvement in survival rates with combined treatment of radiotherapy plus temozolomide* Researchers found a novel mechanism on how tumours evade chemotherapy through genomic rearrangements of the MGMT DNA repair gene* This finding is potentially relevant for updating the methods used to monitor temozolomide...

UBCO researchers link advertising to uptick in youth vaping

UBC researchers are raising the alarm about the increase of vaping among teenagers and how e-cigarette marketing strategies target youth. Assistant Professor Laura Struik, who teaches in UBC Okanagan's School of Nursing, recently published a paper examining why teens take up vaping and whether advertising capitalizes on those reasons.

Ultraviolet communication to transform Army networks

Of ever-increasing concern for operating a tactical communications network is the possibility that a sophisticated adversary may detect friendly transmissions. Army researchers developed an analysis framework that enables the rigorous study of the detectability of ultraviolet communication systems, providing the insights needed to deliver the requirements of future, more secure Army networks.

Untapped potential for TikTok to convey COVID-19 guidance

Research published in DeGruyter's International Journal of Adolescent Medicine and Health suggests TikTok is rich with untapped educational potential. The platform could play a vital role in conveying important health information alongside lip-syncing videos and viral dance challenges, the paper's authors say.

Upcycling plastic waste toward sustainable energy storage

UC Riverside engineering professors Mihri and Cengiz Ozkan and their students have been working for years on creating improved energy storage materials from sustainable sources, such as glass bottles, beach sand, Silly Putty, and portabella mushrooms. Now they have turned plastic soda bottles into a nanomaterial for use in batteries. Though they don't store as much energy as lithium-ion batteries,...

Using physics to improve root canal efficiency

In Physics of Fluids, scientists report calculations with a model of a conical-shaped root canal inside a tooth. A crucial step in this common dental procedure is irrigation, or rinsing, of the root canal cavity with an antibacterial solution, and the researchers used computational fluid dynamics to determine the effect of temperature on the cleaning efficiency: Higher temperatures can, to a...

Why does COVID-19 impact only some organs, not others?

In severe cases of COVID-19, damage can spread beyond the lungs and into other organs, such as the heart, liver, kidney and parts of the neurological system. Beyond these specific sets of organs, however, the virus seems to lack impact. Ernesto Estrada aimed to uncover an explanation as to how it is possible for these damages to propagate selectively rather than affecting the entire body. He...

X-rays indicate that water can behave like a liquid crystal

Scientists at Stockholm University have discovered that water can exhibit a similar behavior like a liquid crystal when illuminated with laser light. This effect originates by the alignment of water molecules, which exhibit a mixture of low- and high-density domains that are more or less prone to alignment. The results, reported in Physics Review Letters on the 11th of August 2020, are based on a...

Coronavirus live news: Global cases top 20m as WHO chief says ‘it’s never too late to turn outbreak around'

Deaths likely to pass 750,000 this week, says WHO; Trump considers blocking Americans who may have Covid-19 from coming home; EU health agency calls for new lockdowns; Follow the latest updatesGlobal cases pass 20mFrance extends mask use as Greece says it is in second waveGlobal report: Covid cases worldwide near 20 millionWorld map: which countries have the most cases and deaths?See all our...

Study pinpoints five most likely causes of post-traumatic stress in police officers

A combination of genetic and emotional differences may lead to post-traumatic stress (PTS) in police officers, a new study finds. Based on biological studies of officers in major cities, the study showed that the most significant PTS predictors are the tendency to startle at sudden sounds, early career displays of mental health symptoms (e.g., anxiety and depression), and certain genetic...

The World Records Its 20 Millionth Case of COVID-19

There are a lot of ways to try to capture grim milestone the world crossed Monday night when it recorded its 20 millionth case of COVID-19. It’s two Swedens, four Irelands, 10 Slovenias. It’s greater than the entire population of the state of New York. The outbreak that began in Wuhan, China in December 2019 has now spread to 188 countries and regions, touching every continent but...


MONDAY 10. AUGUST 2020