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Articles related to "air"


Open Source PCR Thermocycler

  • OpenPCR is a low-cost yet accurate thermocycleryou build yourself, capable of controlling PCRreactions for DNA detection, beer spoilage, and other applications.
  • Whether you are a small lab on a budget or lookingto do PCR in the field, the low cost and small size ofOpenPCR makes PCR accessible to anyone.
  • Assembling the kit is easy with IKEA-like build instructions,while a Windows/OS X GUI makes designing yourPCR protocol a breeze.
  • The complete software and CAD of the OpenPCR are releasedas open source.
  • Modify the design to suit your needs,or simply support the movement to make science more open.
  • OpenPCR takes about 3 hours to build.
  • Your kit includes allthe parts for building an OpenPCR.
  • All OpenPCR software, design files and instructions arelicensed under the GNU GPLv3.
  • Read more about the OpenPCR Design.

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Rep. Louie Gohmert's daughter rebukes him for not wearing a mask before coronavirus diagnosis

  • His daughter's comments -- which her agent, Ryan Vaughn, confirmed to be authentic on Monday -- come after the Texas Republican tested positive for the virus last week, prompting House Speaker Nancy Pelosi to announce new rules requiring masks on the House floor and renewing a debate about access to testing for members of Congress and their staff.
  • Gohmert had been scheduled to fly aboard Air Force One on Wednesday with President Donald Trump to Midland, Texas, but he tested positive for coronavirus during a pre-flight screening at the White House, a person familiar with the situation told CNN.
  • Before his diagnosis, Gohmert had told CNN in June that he didn't wear a mask because he had been tested and he didn't yet have the virus.

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Why aren’t we talking more about airborne transmission?

  • In fact, many experts I spoke with remarked that COVID-19 was less contagious than many other pathogens, except when it seemed to occasionally go wild in super-spreader events, infecting large numbers of people at once, across distances much greater than the droplet range of three to six feet.
  • Those who argue that COVID-19 can spread through aerosol routes point to the prevalence and conditions of these super-spreader events as one of the most important pieces of evidence for airborne transmission.
  • Most super-spreader events occur at an indoor venue, especially a poorly ventilated one (meaning air is not being exchanged, diluted, or filtered), where lots of people are talking, chanting, or singing.

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Hacking Portable Air Conditioners

  • In theory, dual-hose models avoid this problem by cooling the condenser with outdoor air, which is then re-exhausted.
  • Finally, if you decide to open the unit (a 12-inch #2 Philips screwdriver is helpful), it's possible to tape over some internal hose/wiring gaps, but I'm not sure how important these are.
  • Have your engineers evaluated what effect sealing this gap (and other intake leaks) has on cooling efficiency?
  • It doesn't look like there has been factory level testing with the gap sealed, but the engineers who work on these units have performed their own tests and found covering this gap to not be an issue.
  • I don't think my setup is rigorous enough to calculate any absolute efficiency numbers, but clearly the sealed configuration does a better job of cooling, and single-hose mode is abysmal.

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WTA Tour return to go ahead as planned despite player's positive coronavirus test

  • According to a statement, the player is asymptomatic and has withdrawn from the tournament -- the first official tennis event since early March.
  • The Palermo Ladies Open is scheduled to take place from August 3 to 9 on the Italian island of Sicily.
  • Reigning Wimbledon champion Simona Halep announced last month she would not compete in the tournament due to an increasing number of coronavirus cases in her native Romania and worries about international air travel.
  • That was before world No. 1 Ashley Barty said earlier this week that she won't play in the US Open, which is due to start at the end of the August.
  • The main draw in Palermo will include 15th-ranked Petra Martic from Croatia and Czech Republic's Marketa Vondrousova, who finished runner-up at last year's French Open.

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TikTok says it's "not planning on going anywhere" in response to pending U.S. ban

  • Trump appeared to discount any support for that possibility in his comments to the White House press pool, but a new report from Saturday morning said that Microsoft is indeed in talks to acquire a stake in TikTok and take over stewardship of its U.S. user’s data, as part of a potential deal to stave off any ban.
  • Again, it’s not clear what executive powers would actually allow Trump to put in place a U.S.-wide ban of the application, but it looks like ByteDance is working with parties in the U.S. on a deal that assumes he’d be able to do so unless the Chinese company divests entirely its U.S.-based TikTok operations to an American owner.

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NASA-SpaceX mission: Astronauts prepare to board Crew Dragon from the ISS

  • New York (CNN Business) - NASA astronauts Robert Behnken and Douglas Hurley are preparing to leave the International Space Station this evening and begin their 19-hour journey home, capping off the their historic mission aboard SpaceX's Crew Dragon spacecraft.
  • Later this afternoon, Behnken and Hurley are expected to climb aboard their Crew Dragon spacecraft, named Dragon Endeavour, which has been docked at the space station since the astronauts arrived in May. If the weather forecast looks acceptable, the capsule will leave the space station around 7:30 pm ET and begin its 19-hour trek to a splashdown off the coast of Florida.
  • If the Crew Dragon is cleared to leave this evening, it's expected to reach its water landing at 2:42 pm ET Sunday.
  • That's why NASA is hoping Crew Dragon can land in the Gulf of Mexico, off Florida's western coast, where forecasters are expecting calmer waters.

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The mysterious life of birds who never come down

  • There was no way to tell one bird from another, nor to watch them do anything other than move from place to place, although sometimes, if the swifts were flying low over rooftops, I’d see one open its mouth, and that was truly uncanny, because the gape was huge, turning the bird into something uncomfortably like a miniature basking shark.
  • On warm summer evenings, swifts that aren’t sitting on eggs or tending their chicks fly low and fast, screaming in speeding packs around rooftops and spires.
  • He managed to catch two — I know this is impossible, but I like to imagine that he or his navigator simply stretched out a hand and picked them gently from the air — and one swift was pulled dead from the engine after the flight returned to earth.

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These are the 12 ways you can drastically cut your dementia risk

  • The review identified the biggest known risk factors for dementia as smoking, excess alcohol consumption, high blood pressure, obesity, diabetes, head injury, depression, hearing loss and exposure to air pollution, as well as lack of exercise, education and social contact.
  • For example, the review finds that individuals can partially protect themselves by not smoking, drinking less than 21 units of alcohol per week, maintaining a systolic blood pressure of less than 130 mmHg, avoiding activities that could lead to head injuries, using hearing aids if needed, eating a healthy diet, and exercising and socialising regularly.
  • In some higher-income countries, including the UK, US and France, dementia rates in older people have fallen in recent decades, possibly due to improvements in education, nutrition and health care.
  • This suggests that preventative health measures can have an impact on dementia, in the same way they have helped to reduce rates of lung cancer and deaths from heart disease in many higher-income countries, says Ames.

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