Mandates for mask use in public during the recent COVID-19 pandemic, worsened by global shortage of commercial supplies, have led to widespread use of homemade masks and mask alternatives. It is assumed that wearing such masks reduces the likelihood for an infected person to spread the disease, but many of these mask designs have not been tested in practice. We have demonstrated a simple optical measurement method to evaluate the efficacy of masks to reduce the transmission of respiratory droplets during regular speech. In proof-of-principle studies, we compared a variety of commonly available mask types and observed that some mask types approach the performance of standard surgical masks, while some mask alternatives, such as neck fleece or bandanas, offer very little protection. Our measurement setup is inexpensive and can be built and operated by non-experts, allowing for rapid evaluation of mask performance during speech, sneezing, or coughing.
Know when it's time to break up with your customers.
42 U.S.C. 5174(e)(2): "The President, in consultation with the Governor of a State, may provide financial assistance" to "an individual or household in the State who is adversely affected by a major disaster" to address "other necessary expenses or serious needs resulting from the major disaster."
There is a number of online “alternative lifestyle” movements that have been gaining steam among millennials. They are appealing in their leanness: do more with less. At first, they seem cute and liberating. Scores of Instagram influencers and bloggers romanticize these lifestyles, and their subreddits are buzzing with zealots. Key examples below:
The world's poorest nations are also some of its most religious, but it's not just wealth that determines a country's religiosity. In the first story in a series on religion, CBC News explores how sociologists have found income equality and access to good education and health care play a role in making people less reliant on faith.
Members of Congress clearly don’t understand the tech companies they’re supposed to regulate. But neither does anyone else.
Survey sparks concern over misconceptions about vaccines and scepticism about science
TBB's own Ralph Savelsberg has added a new LEGO jet to his collection: The EAP, which stands for Experimental Fighter Programme. The name is clunky, but it was a gorgeous jet that paved the way for Eurofighter Typhoon.
The Japanese manga publisher Shogakukan has asked Google to remove Dictionary.com page for the word 'magi' from its search engine.
WILLIAMSTOWN — A black panther rises from a river; a lioness, at its edge, dips a toe into the water as a lion stands guard. Behind them, myriad animals roam a hillside that leads, in the …
Introduction Everyone knows how to track which processes run on Linux, but almost no-one tracks them accurately. In fact, all of the methods listed in this post have some deficiency or another. Lets define requirements:
All processes should be logged including short-lived processes We should know the full executable path of every process that runs Within reason, we shouldn’t need to modify or recompile our code for different kernel versions Bonus: If the host is a Kubernetes node or runs docker than we should be able to determine which pod/container a process belongs to.
The move highlights the risk of Legionnaires’ disease outbreaks when buildings are reopened after coronavirus lockdowns.
Drivers with American plates are facing harassment and vandalism in Canada as the some Canadians try to deter US residents from sneaking in.
Share this article:Animal rights advocates have put up 19 billboards across Los Angeles that connect the eating of animals to pandemics, and pay tribute to an activist killed in Canada earlier this summer while giving comfort to pigs on the way to slaughter. The billboards, which went up July 27 for four weeks, are in […]