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There's a thing called a rotating schedule. 8 hours on a set number of days. Hospitals and factories use this so that when a service needed is that important e.g hospitals, or that cannot actually shut down e.g nuclear reactors, power plants, hospitals, T.V, they can have 3 sets of 8 hours or 2 sets of 12 for people to go to work so that service can continue. The problem is solved, and you can hire more people if you really need to. The reason for 8 hours is so that the day is divisible into 3 clean divisions or 2 for 12 hours. This problem that you think you're trying to create is already solved, and is just logistical.

Also rotating shift workplaces give vacation time around 1 week per month, by design. So you can spend that whole week doing things in advance like buying stuff for a month. Pick a time most convenient during that week.

https://www.ccohs.ca/oshanswer...

Rotating or not, those are not 9-5 (ergo giving a point to the OP replying to ya.)

There's a thing called a rotating schedule. 8 hours on a set number of days. Hospitals and factories use this so that when a service needed is that important e.g hospitals, or that cannot actually shut down e.g nuclear reactors, power plants, hospitals, T.V, they can have 3 sets of 8 hours or 2 sets of 12 for people to go to work so that service can continue. The problem is solved, and you can hire more people if you really need to. The reason for 8 hours is so that the day is divisible into 3 clean divisions or 2 for 12 hours. This problem that you think you're trying to create is already solved, and is just logistical.

Also rotating shift workplaces give vacation time around 1 week per month, by design. So you can spend that whole week doing things in advance like buying stuff for a month. Pick a time most convenient during that week.

https://www.ccohs.ca/oshanswer...

you are fuckin nuts

There's a thing called a rotating schedule. 8 hours on a set number of days. Hospitals and factories use this so that when a service needed is that important e.g hospitals, or that cannot actually shut down e.g nuclear reactors, power plants, hospitals, T.V, they can have 3 sets of 8 hours or 2 sets of 12 for people to go to work so that service can continue. The problem is solved, and you can hire more people if you really need to. The reason for 8 hours is so that the day is divisible into 3 clean divisions or 2 for 12 hours. This problem that you think you're trying to create is already solved, and is just logistical.

Also rotating shift workplaces give vacation time around 1 week per month, by design. So you can spend that whole week doing things in advance like buying stuff for a month. Pick a time most convenient during that week.

https://www.ccohs.ca/oshanswer...

Sure enough

Trust the Canadian government to have a web page devoted to how not to freeze to death.

As crazy and wrong as this guy is, his claim isn't completely out of left field. One of my physics teachers in high school (who had worked as an engineer at Bell Helicopter) related the story that, apparently, some of the helicopters initially used in the Viet Nam conflict happened to vibrate at the resonant frequency of the human kidney, causing pilots to experience organ damage. They had to add material to the seats to cancel out the vibrations. Here's a page from the Canadian equivalent of the U.S.'s OSHA:

http://www.ccohs.ca/oshanswers/phys_agents/vibration/vibration_intro.html

In terms of risk a lightning strike to the building is not going to be an issue on a diesel tank. Not to mention the way lighting strikes diesel is in a closed tank. The tank will liven up temporarily and hell any electronics inside like an integrated diesel pump will even survive just fine even in a direct strike. Similar principle to a faraday cage.

I was talking a direct strike and the original comment was on the roof, not on a floor inside the building. I've seen lightening rip a 10 inch seam in 1 inch steel plate. Of course you can check this yourself, just get a plasma cutter and go to town on a metal gas can with diesel in it. If a plasma cutter is too expensive, get a welder and start welding but turn the setting up as high as you can first. Better yet, don't do it and look at these.

http://www.ccohs.ca/otherhsinfo/alerts/alert107.txt

http://www.cdc.gov/niosh/face/stateface/ca/07ca006.html

Now please don't tell me that a welder or plasma cutter has more power then a lightning bolt.

Also I'm not assuming anything. I work in the oil industry and I'm involved in process risk calculations of hazardous materials.

I so hope this is not true. You have demonstrated to me at least that you have no clue.

The experts have some simple remedies:
    http://www.ccohs.ca/oshanswers/chemicals/chem_profiles/aluminum_powder/working_alu.html
    http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=DIRECTIVES&p_id=3830

While you can ignite Aluminium particles in a moist enough environment, Aliminium, unlike wood, is a pretty good conductor. Static buildup is easier to control than in wood or grain dust. Grain processing plants are particularly difficult because the dust is in a contained space on a fast moving conveyor belt that is difficult to ventilate. You can get explosions from static discharge in addtion to friction heat sources like a broken ball bearing. Even with grain silos, the experts have some remedies that work (oxygen deprivation plus temperature probes). But the regulation that covers aluminium dust in America is in the Housekeeping section of the OSHA Sanitation standard. The Canadioan OSH also says "Practice good housekeeping" and talks about "mechanical ventilation". That should tell you it's not quite as mind boggling as you think. Basic sanitation measures we take for granted would have prevented the so called "iPad death toll".

Defending deaths caused by poor housekeeping and lack of adequate ventilation as somehow do to inherent risk does not do Apple any service.

I like warm weather. I like water. Sounds like a win-win situation.

Sure. Then again, maybe not.

Lighting is often the real problem.

The old "T-10" type of fluorescent lights actually flicker at 60 hertz, because they use "magnetic" ballasts operating at the same frequency as the AC electricity supply. The 60 hertz frequency is fast enough that most humans don't notice the flickering, but slow enough to cause eye strain. The new "T-8" type of fluorescent lights flicker at a much higher rate, near 20,000 hertz, which does not cause eye strain.

Many building have far too much light, particularly buildings with the older T-10 fluorescent lights. There was a period of many years when more light was assumed to be better than less light, so many older buildings (most schools) have far too much light. Bright light causes glare, which causes eye strain and headaches.

The headaches and other effects of bad lighting, either flickering or high intensity, are exacerbated when people are looking at computer screens for extended periods. This effect is made worse by the fact that many video displays are preset to emit maximum intensity, to make them brighter so customers will notice them in the store.

For more information, see: http://www.ccohs.ca/oshanswers/ergonomics/office/eye_discomfort.html

Reduce the light to about 1 watt per square foot; replace T-10 fixtures with T-8, turn down the brightness of computers screens, and watch the headaches disappear.

In the bargain, you will save money. Replacing the old T-10 fixtures with T-8 fixtures will reduce electricity usage for lighting by about 40%, even at the same intensity. Reducing the number of fixtures in each room, to reduce the intensity, also reduces electricity usage.

Yes read the section titled, "What are the health effects of microwave radiation?", second para It starts, "Some biological effects cannot be explained by a temperature rise in the body or in any one part."

According TFA: "You don't have to worry about procuring rare metals. Titanium oxide is cheap and safe, already being used in many products ranging from face powder to white paint"

Really? Several articles have linked TiO2 to cancer. Yeah, real safe.

Actually i think i heard of evidence that the titanium dioxide particles in sunscreens, especially nano particles are harmful.

http://www.ccohs.ca/headlines/text186.html

"With such widespread use of titanium dioxide, it is important to understand that the IARC conclusions are based on very specific evidence. This evidence showed that high concentrations of pigment-grade (powdered) and ultrafine titanium dioxide dust caused respiratory tract cancer in rats exposed by inhalation and intratracheal instillation*"

http://www.consumerreports.org/cro/health-fitness/nanotechnology-7-07/nanoparticles-in-sunscreens/0707_nano_sunscreen_1.htm

Lab studies indicate that both of those nano-ingredients create free radicals that damage the DNA of cells and possibly cause other harm as well. And even low exposure to nanoparticles of titanium dioxide can damage the lungs of animals if inhaled

http://locokazoo.com/2008/08/05/the-sun-screen-health-disaster/
http://www.nanowerk.com/spotlight/spotid=6838.php

But, it doesn't seem to make SENSE to me...

http://www.osha.gov/SLTC/healthguidelines/titaniumdioxide/recognition.html
Search down to:

HEALTH HAZARD INFORMATION

http://www.theorganicmakeupcompany.com/CA/titaniumdioxide.asp

"Titanium dioxide has a variety of uses, as it is odorless and absorbent. This mineral can be found in many products, ranging from paint to food to cosmetics. In cosmetics, it serves several purposes. It is a white pigment, an opacifier and a sunscreen. Concern has arisen from studies that have pointed to titanium dioxide as a carcinogen and photocatalyst, thus creating fear in consumers."

"The MSDS states that titanium dioxide can cause some lung fibrosis at fifty times the nuisance dust, defined by the US Department of Labor as 15 mg/m cubed (OSHA) or 10 mg/m cubed (ACGIH Threshold Limit Value). The ACGIH states that titanium dioxide is "not classifiable as a human carcinogen". Symptoms of chronic overexposure to titanium dioxide in an industrial setting, according to the MSDS, include a "slight increase in lung tumour incidence in lab rats". It also states "when titanium dioxide was fed to rats/mice in a carcinogen bioassay, it was not carcinogenic". The NIOSH declares that at 5000 mg/m cubed there was slight lung fibrosis, concluding that this substance was carcinogenic in rats."

http://www.ccohs.ca/headlines/text186.html

OK, I know the first slam upon me will be the lack of concentration of the TiO2, the means of entry, and so on, but STILL...

Ok, have a few minutes so I'll post again.

> Thanks for astroturfing though...

Will give you the benefit of the doubt and respond (I'm new here) -- a good defense against astroturfing would be to look at the poster's record of posting, and if they are a real person, not some corporate shill or reporter. I haven't posted too much, but I assure you I'm a real person, not a paid HP representative. If you generally hate "the man" or anybody in a position of any power, I'm sorry... however, to appeal to your rationality I would point out that corporations can *help* people. I mean, the keyboard on which you are typing was made by a corporation. Your computer was too, and its processor. If you wanted a CPU made by noncommercial hippies, it would cost *more*, and would suck. OTOH, I'm not a corporate whore, and totally agree with the excesses of corporate greed and tendency toward exploitation once they get to a position of dominance -- however, that is why you intellectually analyze each position, as we did with this response from HP.

I don't believe all corporate defenses are justified, or agree with them -- I agree with HP's response, in this specific case. No, I don't own any HP stock, nor am I affiliated with them in any way.

> That's EXACTLY what a shill would say. Shill!

See above. You are silly, and didn't address any concerns, just attacked me. I won't reply.

> So doctor, what's your take on closing the lid before flushing? I've heard that leaving it open when flushing can spray tons of fecal matter around. I prefer to close it when I'm done anyways, but it's always good to be informed.

Yes, would advise shutting it if you are concerned. There is probably a fine mist of crappy particles in every bathroom if you look hard enough. However, you must separate what is gross from what can make you sick. Every time you smell your little brother's noisy bum, you are breathing in something that was in his butt. Gross? Yes. Make you sick? Not at all, if you are healthy.

>OT, I know, but does that mean that someone who's living in a city could start to suffer respiratory problems (like asthma) despite no previous symptoms as a direct result of all the crap they're breathing in?

Yup -- inner city kids have a much higher prevalence of asthma; however, a lot of studies show that it is mostly moldy indoor conditions rather than generalized smog / particles in the city. Smog knows neither ghetto nor 5th avenue apartment, so all city-dwellers should be affected equally, but some groups will have more asthma, thought to be indoor chronic exposure.

>For perspective -- how does normal-use printer dust compare with everyday household dust? how about farm dust, such as one might breathe during a long day plowing the fields or baling hay?

Farm dust is bad, and tends to be higher exposure than household dust. For these particles that are not black, indigestible (by macrophages) particles, allergic reaction and inflammation in the lung tends to give the problem. There is something called "Farmer's lung." Wikipedia is not good on this topic, so here you go. http://www.ccohs.ca/oshanswers/diseases/farmers_lu ng.html

>Thanks, Doc! A well-worded comment from someone who can probably spell "ridiculous" and "definitely!
>by the way, totally off topic, but love your UID =)

You're welcome. Happy to provide on my (rare) day off. :)

Gloves should not be worn around this type of machinery anyway. Rapidly rotating machinery + accidental snag with glove = a lot more than a missing finger (mangled hand, for example) http://www.ccohs.ca/oshanswers/safety_haz/woodwork /gen_safe.html/

They're illegal because they can interfere with pacemakers
Like microwave ovens.
or car ignitions
or lots of other equipment that have the potential.

Could this mean we could see a light emitting fluorescent liquid tube without a 60 (or 50)Hz hum?

The effects of phase shif flickering are known to be horrible for ergonomics.

Here is a link to a site stating optimal office temperature between 69-73 degrees. Here
Now I did do a study in college (don't have the resources as it was a while ago) and I also came up with the statistic that 69 degrees is optimal. For those that are cold - you can always add more clothing, while those that are hot (typically men get hotter then women) can only take so much clothing off...especially in many offices where men are required to wear a shirt, tie and potentially a suit jacket.
I try and keep the office temp at around 69. When it goes above 71 *I* do start to get uncomfortable.

Yes, Lye

With CPU's operating at or above microwave oven frequencies, maybe Intel is just trying to sheild us from the harmfull radiations.
Hey and since the CPU clock is a square have couldn't it even have highger more dangerous harmonics?

My apologies, I should have been more specific. I have a habit of remembering odd statistics and sometimes use them out of context. :)

A passenger car at 60 kilometers per hour at 20 meters is 65 dB(A).

The A stands for A-weighted. A-weighting noise levels is an attempt to consider human perceptual factors in the values. Low pitch noises that don't bother the human ear much have lower dB(A) values than dB.

Here 's a reference with some information on decibels and whatnot.

See the bottom of this for the phase diagram, which indicates that at room temperature you need 30 plus atmospheres of pressure, or more than 450 lbs per square inch.

Here is a demo/video of dry ice turning into liquid CO2! (get rid of the space after the L near the end of the URL. Sorry, the submission form is wrapping it.)
Ask A Scientist - Liquid CO2
Liquid Carbon Dioxide (CO2) Surfactant System For Garment Care

Why CO2 in Fire Suppression Systems
CO2 Snow Cleaning and what it's best used for.

I want to know how they know that liquid CO2 has a slightly acidic taste and odor!! Did they get inside a 30 atmosphere room temperature container with some liquid CO2 and take a taste?

And finally - test your knowledge of Liquid CO2