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The Captain's Journal » New England Journal Of Medicine On What Masks Can’t Do Regarding SARS-CoV-2
Progressives do love their cargo cults. "Do you recall that I said this? Next up, the wearing of masks. I have some experience in air filtration engineering from my early career testing and balancing HEPA filters and charcoal adsorbers. HEPA filters (of concern here) work by particle interception due to electrostatic force. Surgical masks, cloths, handkerchiefs, and other manner of cotton material (cotton is cellulose) do not have that. My daughter wears one in surgery and the ER to prevent potential blood-borne pathogens from entering her mouth, not to prevent SARS-CoV-2, flu or the common cold (which is also a Coronavirus). N95 masks are just that, 95% efficient for particles down to a given size. Moreover, when a nuclear or chemical worker wears a full face respirator, if the wearer is a male and has a beard, he must shave. Workers have tried to create work-arounds for this by glazing their face with Vaseline, but the seal never works. The bulk of breathing air goes around the filtration media if there is no testable seal, not through it. This is true of full face respirators, and it is true in the superlative for these silly little masks half of America is wearing. When you put an N95 mask on, the bulk of your breathing air is going under and over the top of the mask, not through it. Furthermore, every decontamination technique eventually destroys the electrostatic charge on the fibers, thus rendering the mask useless. It’s designed to be worn and then thrown away. It’s actually worse than useless, because we are now learning that there is a heavy viral and pathogenic loading on both the outside and the inside of the filter media, and we also now know that the degree to which a patient suffers from this disease is a function – at least partially – of the amount of inoculate that you breath. Then I got a little more detailed and discussed particle sizes. HEPA filters will remove particles down to 0.3 µm in size (to usually 99.95% efficiency, depending upon the filter – here I have used data for nuclear grade filters). The SARS-CoV-2 virus is 80 nm in diameter. A few viruses out of a million might be intercepted by electrostatic force, but that’s essentially zero. If the particle you’re trying to intercept is spittle, stay away from coughing people anyway. But those particles drop by sedimentation, diffusiophoresis, etc. 0.3 µm versus 80 nm. A nanometer is 1E-9 meters, and 1 µm is 1E-6 meters. This means that a SARS-CoV-2 virus is 80E-9 / 0.3E-6 = 0.27 the minimum size necessary for even the most expensive nuclear grade HEPA filters to remove it from an air stream. I need to caveat these statements and observe that because of the serpentine flow of air through a HEPA filter, it’s possible that there is some removal efficiency due to electrostatic force (i.e., that it’s not zero), assuming a charge on the shell of the virus. But it’s still low. While I’m not perfect, I won’t mislead readers. And while there is some small probability that there will be some small effect, any very small particulate eventually re-evolves into the air stream. One of my major gripes with how America has turned to the medical bureaucracy during this pandemic is treating medical doctors like experts in every field of science. They’re not. A doctor isn’t an air flow and filtration engineer. A doctor isn’t an industrial hygienist. A doctor isn’t a physicist. But it’s still nice to see that eventually they conform to the truth of what science tells us. This is straight from the New England Journal of Medicine (nejmp2006372). We know that wearing a mask outside health care facilities offers little, if any, protection from infection. Public health authorities define a significant exposure to Covid-19 as face-to-face contact within 6 feet with a patient with symptomatic Covid-19 that is sustained for at least a few minutes (and some say more than 10 minutes or even 30 minutes). The chance of catching Covid-19 from a passing interaction in a public space is therefore minimal. In many cases, the desire for widespread masking is a reflexive reaction to anxiety over the pandemic. You can read the rest for yourself. They eventually dive into a discussion concerning the use of masks by medical workers, and I think over-state their case (I still believe, along with my daughter, an NP, that she wears a mask for purposes of protecting herself from blood-borne diseases and spittle in the OR and ER). However, nits here and there shouldn’t obfuscate the fact that at least they are being honest about this. Anxiety is the root of the problem, and reflexive fealty to the priesthood of the medical profession is a symptom of real problems in America concerning the lack of STEM education and knowledge." Fauci changes tune, now says second COVID-19 wave may never happen — and mask-wearing is symbolic WHO and CDC Differ on Mask Guidelines The Mysterious Missing Link - Anti-Malaria Drug & Zinc
One does not need to take hydroxy since there are other zinc ionophores, one of which is Quercetin. Hydroxy is less safe and has far more and more dangerous side effects than does Quercetin. The point of taking these substances is to move zinc across the cell wall where it acts as an antiviral. "It's All Bullsh*t" – 3 Leaks That Sink The COVID Narrative
It's all about control. The progressive cult has been infected by the fear of witches, and witchcraft. This is a dangerous cult. Extraordinary Popular Delusions and the Madness of Crowds : Complete and Unabridged : All Three Volumes 1841-54 (illustrated) I bought the DR 650, which Rocky Mountain ATV MC built back in 2017, Everide the YouTuber bought it and eventually decided to sell it. The first video below is from Rocky Mountain and describes their build; the second is Everide's video. Both are worth a watch. Those videos should bring you up to speed on the bike and what has been done to it so far. This installment will be a short description of how I decided to change the fork to make it closer to a 1st/2nd gen cartridge fork.. Yesterday a large box of parts came from Procycle, including the new Cogent Dynamic DDC (Drop-in Damper Cartridges) and Adjustable Fork Caps. The DDC is a shim stack puck, which you simply drop into the fork below the spring, change the oil to 5 weight oil reassemble the fork with a set of new (included) spacers, and go ride. I have a few photos, it was easy. Remember, if I can do it, you can do it. Just follow the simple directions from Cogent Dynamics, and follow the torque specs from Cyclepedia's Suzuki DR 650 service manual, which you can pick up from Amazon for $9.99. Suzuki DR650 SE 1996-2014, S 2015-18 Service Manual This is the Procycle suspension page for the DR 650. I've ordered the Mojave Pro rear shock, which will probably come in three or four weeks, I will update the blog with that install then. I won't offer a review until all the work has been done. So, here are the goods. Three bottles of fork oil, the DDC's are blue to the left and right of the old spacers and fork caps which are in the middle. Below the blue DDC's are the new spacers, and below them are the new adjustable fork caps. The spacers to the left and out of photo are for the adjustable fork caps if I were not adding the DDC's. First up, I needed to pull the faring off the gas tank to make room to access the triple clamps. Next up, I pulled the wheel. Then I pulled the brake and supported it with a bungie. Use a wood wedge to force open the caliper which makes reassembly much easier. Then remove the brake line from the fork, it is held both near the top and near the bottom. Undo the top triple bolt and loosen the fork cap with a socket, don't take the fork cap off, just loosen it. This makes it much easier to break the fork cap free since the lower triple is still holding the fork. Now you can loosen the lower triple bolts and slide the fork out the bottom of the triples. Get an oil pan ready, it is time to dump and pump the shock oil. Screw off the fork cap by hand, turn the fork upside down over your oil pan and pump the fork until most of the oil is out, this should take no more than a minute. Then let drain into the oil pan for 15 minutes. Repeat for both forks. I bought the Cogent Dynamics install tool but you could just as easily add the DDC by using a cheap magnet on a stick. Place the magnet on a stick onto the DDC then slide the DDC into place in the fork. Slide the spring over the magnet on a stick and pull out the stick. Add oil according to specs and pump the fork to let the oil settle into the fork. Once the oil is well set, fill with 600 ml of oil, top up if necessary, and using a fork oil level tool remove the fork oil to the required level, here 130 mm below the fork cap. I pumped the fork tube here a bit and spilled fork oil, sigh. Instead, pull the fork tube up, drop in the washer, and the spacer, and thread on the new adjustable fork cap. Set aside and finish up with the other fork. Best spill a little more oil, one can never spill too much oil. Sigh. There, all done, notice the oil splotches I had to wipe up. Yes, after this was all done, I washed up the mess. Now reassemble the bike reversing everything you did earlier. Try to get the right fork on the right, and the left fork on the left. The wheel won't go on right if you don't. Make sure the fork overhang at the top is the same for both forks. Clean up the spedo sensor, lightly grease the axle, and make sure the parts are reasonably clean, and if necessary, greased, before reassembly. Then torque the fork cap to 16.5 ft lbs, the upper triple to 21 ft lbs, the lower triple to 19 ft lbs, the axle to 47 ft lbs and the front axle pinch bolts to 7ft lbs. Torque everything but the front axle pinch bolts. Once reassembled, take the bike off of your jack or other support, hop on and give the forks a couple of good solid thrusts. This will allow the pinch bolts and axle to correctly align. Now you can torque the pinch bolts. I still had to fit and tighten the faring but that only took a few minutes. Go ride. What I noticed immediately: the bike is taller, and the suspension is stiffer, or less bouncy, your choice. Even just working the fork in the garage while standing on the bike the suspension was noticeably less soft and springy. Rebound was dramatically better without a hint of pogo sticking. I expect I will like the change very much. The cost of this is quite inexpensive but for most requires both the DDCs and new springs. Justin over at Rocky Mountain had already put in the Race Tech springs which are the stiffest spring available for the DR 650, but then I am a big guy, and the Safari tank can hold over 8 gallons, with a full adventure pack, I suspect the bike will need all of that spring and the DDCs better rebound and compression damping.
I will update the suspension part of the build when I get the Mojave Pro rear shock. Two Birds, One Stone
"The Trump administration plans to revoke thousands of visas held by Chinese graduate students and researchers in the United States, escalating its crackdown on the Chinese government’s theft of intellectual property. Those with direct ties to universities affiliated with the People’s Liberation Army will have their visas canceled, American officials with knowledge of the discussions told the New York Times. Secretary of State Mike Pompeo discussed the matter with President Trump on Tuesday at the White House. The expulsions could affect at least 3,000 students, according to some estimates. Though it’s a small percentage of the approximately 360,000 Chinese students in the U.S., it is likely to spark pushback from universities that rely on full tuition payments from international students and critics who say the administration’s crackdown is contributing to anti-Asian racism." Martin Niemoller's famous poem seems apropos here. "First they came for the Communists, and I did not speak out—because I was not a Communist," and concludes, "Then they came for me—and there was no one left to speak for me." Ok, academics, show us how it's done. |
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