Connect with us

Science

Obsolete COVID-19 information continues to circulate in Okanagan

Published

 on

The B.C. government says a COVID-19 fact sheet, downplaying the effectiveness of a mask in keeping oneself safe from viral infection, is outdated.

This comes after the one-page fact sheet, bearing the logos of the provincial ministry of health and the BC Centre for Disease Control, circulated social media in the South Okanagan.

A copy was recently received at the Summerland Review.

The sheet, titled Coronavirus Protection, lists seven suggestions in point form.

The first six are items which have been mentioned time and again, including washing hands, avoiding close contact with people who are sick, cleaning and disinfecting frequently touched objects and surfaces and staying home when sick.

The seventh point states, “wearing a mask is not an effective measure to keep yourself safe from viral infection.”

The fact sheet, although originated from the BC Centre of Disease Control, is now an obsolete document, according to the government.

Ministry of Health spokesperson Shannon Greer said the COVID-19 fact sheet was created by the BC Centre for Disease Control, but was removed from the website and from distribution in May after public health began recommending the use of non-medical masks in situations where one cannot keep a safe distance from others.

The province and the BC Centre for Disease Control have advocated wearing non-medical face masks as a way of slowing the spread of the virus.

The BC Centre for Disease Control also has information about the use of non-medical masks, stating that masks do not replace other preventative measures.

“Masks, face coverings and gloves are the least protective measures for reducing transmission of COVID-19. Masks, when worn properly and for short periods, may offer some protection especially when you are not able to keep a 2 metre distance from others,” a statement on the BC Centre for Disease Control website reads.

The centre includes information on cloth masks, other cloth face coverings including bandanas and scarves, industrial respirators and medical personal protective equipment.

They explain cloth masks should cover the nose and mouth and should fit snugly and securely, yet still allowing the wearer to breathe easily.

Medical personal protective equipment, such as medical and surgical masks and medical N95 respirators are listed by the BC Centre for Disease Control as well, but these pieces of equipment should be reserved for health care workers, not the general public.

“Non-medical masks are meant to protect other people in case you are infected and are recommended to be used in situations when physical distancing is challenging (i.e…public transportation),” said Greer.

“COVID-19 is spread through infected droplets from a sick person’s mouth or nose. Wearing a mask when you are sick, helps protect people around you from the droplets that carry the virus. It does not guarantee that you, as the wearer, are protected.”

For those who are healthy, wearing a non-medical or cloth mask or face covering can help to protect others. This is because some people can spread the virus when they have very mild symptoms or may not know that they are infected. In this case, wearing a mask can help protect others by containing your own droplets when talking, coughing or sneezing.

Source: 

Source link

Continue Reading

Science

NASA probe leaking asteroid samples due to jammed door – Al Jazeera English

Published

 on


Images beamed back to ground control revealed it caught more material than scientists anticipated and was spewing excess of flaky asteroid rocks into space.

A US probe that collected a sample from an asteroid earlier this week retrieved so much material that a rock is wedged in the container door, allowing rocks to spill back out into space.

On Tuesday, the robotic arm of the probe, OSIRIS-REx, kicked up a debris cloud of rocks on Bennu, a skyscraper-sized asteroid some 320 million kilometres (200 million miles) from Earth and trapped the material in a collection device for the return to Earth.

But images of the spacecraft’s collection head beamed back to ground control revealed it had caught more material than scientists anticipated and was spewing an excess of flaky asteroid rocks into space.

The leakage had the OSIRIS-REx mission team scrambling to stow the collection device to prevent additional spillage.

“Time is of the essence,” Thomas Zurbuchen, NASA’s associate administrator for science, told reporters on Friday.

Zurbuchen said mission teams will skip their chance to measure how much material they collected as originally planned and proceed to the stow phase, a fragile process of tucking the sample collection container in a safe position within the spacecraft without jostling out more valuable material.

NASA will not know how much material it collected until the sample capsule returns in 2023.

The troubleshooting also led mission leaders to forgo any more chances of redoing a collection attempt and instead commit to begin next March the spacecraft’s return to Earth.

“Quite honestly, we could not have performed a better collection experiment,” OSIRIS-REx’s principal investigator Dante Lauretta said.

But with the door lodged open by a rock and the “concerning” images of sample spillage, “we’re almost the victim of our own success here”, he added.

The roughly $800m, minivan-sized OSIRIS-REx spacecraft, built by Lockheed Martin, launched in 2016 to grab and return the first US sample of pristine asteroid materials.

Asteroids are among the leftover debris from the solar system’s formation some 4.5 billion years ago.

A sample could hold clues to the origins of life on Earth, scientists say.

Let’s block ads! (Why?)



Source link

Continue Reading

Science

Asteroid samples escaping from jammed NASA spacecraft – Phys.org

Published

 on


In this image taken from video released by NASA, the Osiris-Rex spacecraft touches the surface of asteroid Bennu on Tuesday, Oct. 20, 2020. (NASA via AP)

A NASA spacecraft is stuffed with so much asteroid rubble from this week’s grab that it’s jammed open and precious particles are drifting away in space, scientists said Friday.

Scientists announced the news three days after the named Osiris-Rex briefly touched asteroid Bennu, NASA’s first attempt at such a mission.

The mission’s lead scientist, Dante Lauretta of the University of Arizona, said Tuesday’s operation 200 million miles away collected far more material than expected for return to Earth—in the hundreds of grams. The sample container on the end of the robot arm penetrated so deeply into the asteroid and with such force, however, that rocks got sucked in and became wedged around the rim of the lid.

Scientists estimate the sampler pressed as much as 19 inches (48 centimeters) into the rough, crumbly, black terrain.

“We’re almost a victim of our own success here,” Lauretta said at a hastily arranged news conference.

Lauretta said there is nothing can do to clear the obstructions and prevent more bits of Bennu from escaping, other than to get the samples into their as soon as possible.

So, the flight team was scrambling to put the sample container into the capsule as early as Tuesday—much sooner than originally planned—for the long trip home.

“Time is of the essence,” said Thomas Zurbuchen, chief of NASA’s science missions.

This is NASA’s first asteroid sample-return mission. Bennu was chosen because its carbon-rich material is believed to hold the preserved building blocks of our solar system. Getting pieces from this cosmic time capsule could help scientists better understand how the planets formed billions of years ago and how life originated on Earth.

Scientists were stunned—and then dismayed—on Thursday when they saw the pictures coming from Osiris-Rex following its wildly successful touch-and-go at Bennu two days earlier.

A cloud of asteroid particles could be seen swirling around the spacecraft as it backed away from Bennu. The situation appeared to stabilize, according to Lauretta, once the robot arm was locked into place. But it was impossible to know exactly how much had already been lost.

The requirement for the $800 million-plus mission was to bring back a minimum 2 ounces (60 grams).

Regardless of what’s on board, Osiris-Rex will still leave the vicinity of the asteroid in March—that’s the earliest possible departure given the relative locations of Earth and Bennu. The samples won’t make it back until 2023, seven years after the spacecraft rocketed away from Cape Canaveral.

Osiris-Rex will keep drifting away from Bennu and will not orbit it again, as it waits for its scheduled departure.

Because of the sudden turn of events, scientists won’t know how much the sample capsule holds until it’s back on Earth. They initially planned to spin the spacecraft to measure the contents, but that maneuver was canceled since it could spill even more debris.

“I think we’re going to have to wait until we get home to know precisely how much we have,” Lauretta told reporters. “As you can imagine, that’s hard. … But the good news is we see a lot of material.”

Japan, meanwhile, is awaiting its second batch of samples taken from a different asteroid, due back in December.


Explore further

NASA spacecraft sent asteroid rubble flying in sample grab


© 2020 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission.

Citation:
Asteroid samples escaping from jammed NASA spacecraft (2020, October 24)
retrieved 24 October 2020
from https://phys.org/news/2020-10-asteroid-samples-nasa-spacecraft.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

Let’s block ads! (Why?)



Source link

Continue Reading

Science

Two flights into Abbotsford have had recent COVID-19 exposures – Maple Ridge News

Published

 on


Two flights to Abbotsford have each had a recent COVID-19 exposure, according to the B.C. Centre for Disease Control (CDC).

The agency indicates on its website that the flights involved were WestJet flight 637 from Calgary to Abbotsford on Wednesday, Oct. 14 (rows nine to 15) and Swoop flight 107 from Hamilton to Abbotsford on Monday, Oct. 19 (rows 20 to 26).

The CDC advises that anyone who was on these flights should self-monitor for symptoms for 14 days.

RELATED: Vancouver airport to pilot pre-flight COVID-19 tests for select WestJet passengers

Passengers on domestic flights are not required to self-isolate, but those who have travelled outside of Canada are required to self-isolate for 14 days upon their arrival.

Passengers seated on a plane with a case of COVID-19 that was later identified are no longer directly notified of their potential exposure. Instead, anyone who has travelled is asked to monitor the CDC website.

Passengers seated in the affected rows are considered to be at higher risk of exposure due to their proximity to the case.

RELATED: WestJet to offer full refunds for flights cancelled due to COVID-19 pandemic



vhopes@abbynews.com

Like us on Facebook and follow us on Twitter

Coronavirus

Get local stories you won’t find anywhere else right to your inbox.
Sign up here

Let’s block ads! (Why?)



Source link

Continue Reading

Trending