exposure   2450

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Spectre: Smart Long Exposures
Spectre Smart Long Exposures Long exposures have always been limited by technical factors, from keeping the camera steady, to guessing the amount of light.…
time  exposure  camera  ios  iphone  app  software  from instapaper
21 days ago by splorp
Cryotherapy: norepinephrine, inflammation, and neuron-regeneration - Dr. Rhonda Patrick - YouTube
Not very clear. Look up the studies.

Summary:

@1:01 hibernating mammals lose 30-40% of their synapses during hibernation but regrow them. Mice exposed to fridge-like temperatures (~40F) for 30 minutes had their core body temp drop to 60F (from 98.6F). If they were exposed twice to this cold shock, the RBM3 expression was increased for 6 weeks. Mice genetically engineered to develop Alzheimer's had delayed onset if they were preventively exposed to cold shocks.

@6:08 Professional athletes overtrain (which causes an inflammatory response), but if they do cryotherapy immediately after exercise, there is less tissue (muscle) damage. Cryotherapy in-between 4-hour kayaking sessions increased performance.

@7:57 But if you just do regular training, cryotherapy doesn't help, because it prevents muscle hypertrophy. It only helps if you train super hard.

@10:34 There are other benefits to cold water immersion (up to your shoulders for 20 seconds) vs. cryotherapy (2 minutes at -166F) - you release norepinephrine 2-3 fold, and the effect is very robust and not attenuated - the same amount is released after 12 weeks of "doing this" (with unspecified frequency). Norepinephrine in the brain is associated with prolonged focus, feeling of energy and positive mood (pharmacological depletion of norepinephrine leads to lethargy and depression). It also decreases inflammation (cytokines "akin to setting off a nuclear bomb to kill a cockroach"). Vasoconstriction and analgesic effects.

@13:35 Anti-inflammatory effect in the body too. Cryptherapy is used to mitigate damage caused by trauma to the head (e.g. in UFC fighters). Hypothermia is used to treat traumatic brain injury in clinical settings, and ischemic stroke.
cryotherapy  cold  exposure  health  benefits  happiness 
26 days ago by dandv
Grand Canyon tourists exposed to radiation, safety manager says • AZ Central
Dennis Wagner:
<p>For nearly two decades at the Grand Canyon, tourists, employees, and children on tours passed by three paint buckets stored in the National Park's museum collection building, unaware that they were being exposed to radiation.

Although federal officials learned last year that the 5-gallon containers were brimming with uranium ore, then removed the radioactive specimens, the park's safety director alleges nothing was done to warn park workers or the public that they might have been exposed to unsafe levels of radiation.

In a rogue email sent to all Park Service employees on Feb. 4, Elston "Swede" Stephenson — the safety, health and wellness manager — described the alleged cover-up as "a top management failure" and warned of possible health consequences.

"If you were in the Museum Collections Building (2C) between the year 2000 and June 18, 2018, you were 'exposed' to uranium by OSHA's definition," Stephenson wrote. "The radiation readings, at first blush, exceeds (sic) the Nuclear Regulatory Commission's safe limits. … Identifying who was exposed, and your exposure level, gets tricky and is our next important task."…

…Stephenson said the uranium threat was discovered in March 2018 by the teenage son of a park employee who happened to be a Geiger counter enthusiast, and brought a device to the museum collection room…

…The report indicated radiation levels at "13.9 mR/hr" where the buckets were stored, and "800 mR/hr" on contact with the ore. Just 5 feet from the buckets, there was a zero reading. The abbreviation, "mR" typically stands for milliroentgen, a measurement roughly equivalent to a millirem, according to the Nuclear Regulatory Commission.

The NRC says average radiation exposure in the United States from natural sources is 300 millirems per year at sea level, or 400 at high altitude.

The commission lists a maximum safe dosage for the public, beyond natural radiation, is no more than 2 millirems per hour, or 100 per year.</p>


At no point explained: what the hell the buckets were doing there.
radiation  uranium  exposure 
4 weeks ago by charlesarthur
4 Dangerous Health Risks of Mold Exposure in a Home
As you are seeking professional remediation for mold in your home, consider these four dangerous health risks.
health  mold  exposure 
6 weeks ago by Adventure_Web
How I Made Over $90,000 Selling my Short Film + Video Tutorials
Yes, he's marketing his training services, so hardly impartial, but there's good stuff here, many links & some good ideas
howto  documentary  short  film  finance  marketing  exposure  production  equipment  talent  festival  review  19p 
6 weeks ago by csrollyson
Is Sunscreen the New Margarine? | Outside Online
Is it possible that we've been wrong about sunscreen all along?
sunscreen  suncream  sun  uv  exposure 
10 weeks ago by jonty
The Wizard of Oz or The Wizard of Lethal Asbestos Exposure? | California Mesothelioma Asbestos Lawyers Kazan Law
The movie The Wizard of Oz contained a lethal asbestos exposure scene where snow made from100% industrial-grade chrysotile asbestos fell upon a poppy field.
exposure  history  science  pollution  health  riskanalysis  asbestos 
11 weeks ago by wwwald

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