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retiree

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Everything posted by retiree

  1. Given this, I'd recommend a good quality (gym) elliptical machine for a good HIIT / cardio workout, i.e. 30-60 second repeats. The big advantages are: - extremely stable -- never entails a twisting motion, - it's easy to redistribute and reduce single knee load by offsetting your feet and/or using more arm effort. Main disadvantage is just luck of the draw on machine design -- the effective stride length, rotation, and inertia of these things varies a lot, and not every machine has a natural-feeling motion (some are too bouncy, others too flat). Good luck, -- Retiree
  2. Uhh, I may be sorry I asked: Outcome of Schatzker type V and VI tibial plateau fractures https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5690716/ Must feel pretty sore when you ride a bicycle ???? -- Retiree
  3. "In most cases, a broken kneecap is caused by a direct blow to the front of the knee from a car accident, sports or a fall onto concrete." I am enlightened. I guess not paying your bookie is also a common predisposing factor ???? --Retiree
  4. Can you guys possibly clarify what you mean by a "broken knee"? Thanks, Retiree
  5. Au contraire mon frère, I must demur! Mr DIY is the greatest store ever! It perfectly fills the spot between the local 29 baht store (e.g. kitchen stuff if you're just renting a room for two weeks, pillows for your feet), and HomePro (pillows for your head, cheap to moderately expensive plumbing fixtures, appliances, TVs, etc). Mr DIY has: plastic pots for gardening, incredibly cheap very thick rubber mats (from India) for kitchen floor, very cheap but good quality cable and hair ties, rubber hoses & quick release fittings, holders for the bathroom & kitchens walls, terrific hot-water makers, clip-on mini-strobes for biking or walking at night -- I mean, really! is there anything they don't have? Horses for courses: not all, but many, high-quality products can be manufactured and distributed cheaply nowadays. I think that the company (which is Malaysian) has really skilled buyers doing their sourcing & purchasing. Although I personally would probably not buy any precision tools like cheap shavers there ???? -- Retiree
  6. This is the standard way it's done worldwide. When the resin is exhausted it must be replaced (any hardware store sells bags of it), or renewed with salt (both cheap & easy) or it just lets the hard water flow through. If you're not using it, Lime-a-way is handy for cleanup inside -- I see it's on Lazada and Shopee. HomePro sells "HG" limescale remover, probably the same stuff. -- Retiree
  7. TL;DR: her father's death is a singular event; it's about your wife, not you; do the right thing. Ms. Retiree's father died recently. Poor farmer deep in Isaan, just a bit of land and just a regular guy, but respected in the community where he'd lived for 80+ years and had 7 surviving children. His body was kept at home for four days of mourning, and about 1,000 people showed up. From where? Well, about 100 homes in his village, some 500 houses next village over, and in that range for other nearby villages. Not to mention many, many relatives scattered around the country who dropped everything and drove home when it was clear that his last trip to the hospital would be it. Aside from food & drink for the daily guests (the biggest total expense), the feeding and taking care of people who came to stay for the week, kicking in for gas money, buying kids new clothes if they need them, etc. cost a lot. Add to that the cost of the temple and monks (just across the field from the house -- for the four days at home, nine monks trudged across the field three times day, and you aren't paying for their time; rather, you're contributing to making sure that the wat will be in operation when somebody needs it), a hospital bill or two, some government fees, unsettled bills at the house and so on. According to Ms. Retiree, it would have been far, far cheaper if he had lived in Bangkok, and the service had been held at a temple here. We contributed 100K, partly because other brothers and sisters had helped her Dad much more over the years, and partly because her mother died years ago and this really marked the end of an era. All in all it ran 200 - 300K (the rest made up by a brother who has a small business, and by a small insurance policy). In contrast, an older brother died a while back and we sent 5 or 10K -- it was a different kind of event entirely. And one of the nieces got married at the house recently; people chipped in about 1K each which was plenty. Foreigners tend to look at these things like commodities: Such and such only costs X in Bangkok, why should it cost more out in the middle of nowhere? Well, it does. They only put on a big show to save face. No, that has nothing to do with it, and there was nothing show-like about it. There's no running water in the house, why waste money on a funeral? Well, events like these support the temple, and sustain and bind the community. They help ensure that everybody has a place to come home to in hard times, or to send their kids to be brought up in, when they go off to the city to try to find cash money jobs. And this last may be the biggest misunderstanding: hard cash can be tough to come by in the countryside, especially in a hurry. Indeed, imho it is usually the foreigner who is the one concerned about losing face, and in a laughably misplaced way: he is worried that it will appear that he can be taken advantage of! (not the OP, btw), even if it's not a substantial expense for him in the big scheme of things. My advice just to remember that this is about your wife, not you, and you want to be in her corner, helping her pull her weight in the family as she sees it, at one of the most stressful times in her life. -- Retiree
  8. According to this: https://www.nsw.gov.au/covid-19/vaccination/nsw-covid-19-vaccination-rates COVID-19 vaccination rates in NSW 97.0% Received first dose of a vaccine 95.4% Received second dose of a vaccine ... more than 68 per cent of people eligible for their third dose have received it. Despite the substantial protection from COVID-19 provided by vaccination, older age remains a significant risk factor for serious illness and death with COVID-19, particularly when combined with significant underlying health conditions. When nearly everybody in NSW is vaccinated, then the relatively smaller numbers who do get Covid-19 are also likely to have been vaccinated. Looking at Table 1 of the pdf file, of 122 deaths in the reported week 90 were aged 80 or more (45 were 80-89, and another 45 90 or older). Only 5 people under 60 died (note that numbers have been declining, but 21,711 Covid-19 cases were reported in the past seven days). Oh -- according to this, life expectancy in NSW in 2018-2020 is 81.2 (males), 85.4 (females). https://www.abs.gov.au/statistics/people/population/life-tables/latest-release -- Retiree
  9. My impressions are that a) infection is usually an issue for the lower wisdom tooth extraction, but b) delayed infection is far more common for these, and c) prophylactic antibiotics immediately following extraction aren't much help for delayed infection (it's more about patient's dental anatomy predisposing development of a problem). So, the proper course of action (like watchful waiting, maybe?) would rely on the dentist's judgment. Can crouchpeter (or any other lurking dentists) shed some light on this? -- Retiree
  10. Gosh, it's almost as though you knew the American Heart Association evidence-based guidelines on the recommended use of antibiotic prophylaxis ???? We continue to recommend VGS IE prophylaxis only for categories of patients at highest risk for adverse outcome while emphasizing the critical role of good oral health and regular access to dental care for all. Randomized controlled studies to determine whether antibiotic prophylaxis is effective against VGS IE are needed to further refine recommendations. https://www.ahajournals.org/doi/10.1161/CIR.0000000000000969 Fwiw, when I first read this thread I agreed with the "take the antibiotics" group -- it's what I've always gotten over the years. However, it turns out that thinking has changed in light of evidence, e.g. this Cochrane review from 2021. After raising some concerns about the quality of evidence, it says: We concluded that antibiotics given to healthy people when they are having teeth extracted may help prevent infection, but the decision to use an antibiotic should be judged on an individual patient basis based on their state of health and possible complications of getting an infection. ... On average, treating 19 healthy patients with prophylactic antibiotics may stop one person from getting an infection. https://www.cochrane.org/CD003811/ORAL_are-antibiotics-effective-way-prevent-infection-following-tooth-removal Interesting topic, -- Retiree
  11. My bad -- I incorrectly thought the OP was healed up, and just avoiding running now. Apologies, and I 100% agree -- do nothing that causes pain, and ease very slowly into anything with a high stress load even after you're pain-free. HIIT involving any injured area is a definite no-no if you're less than whole (or as whole as one gets at our age ???? ). Swimming can be a lot more strenuous if you use a snorkel (and maybe a float for your legs), so you can just concentrate on stroking (rather than not drowning ???? ). I'd do it more if I didn't tend to get rashes. The other best thing I've found for cardio with just upper body is pressing at different angles (from flat, to sitting upright) using a Smith machine for safety if possible, or the same with pulling at different angles (from overhead, to horizontal seated) using a height-adjustable cable / pulley. I usually go for whatever weight I can manage for either 1 minute sets, or 100-rep sets. It's not very heavy but can be very hard, esp. if you try not to rest -- just alternate exercises & stay in motion. Imho also excellent with dumbbells a couple of days a month when you are healthy. I've also tried using just the arm things on an elliptical trainer (standing on boxes on either side) but it was always awkward. Same for arms-only on rowing machine -- too awkward. Btw, not saying killer workouts, even brief HIIT ones, are necessary -- favored workout intensity is entirely up to the individual. Imho this is an excellent study, out last month, that discusses how high and low effort can be balanced (see Table 2 in the full paper pdf): Long-Term Leisure-Time Physical Activity Intensity and All-Cause and Cause-Specific Mortality: A Prospective Cohort of US Adults https://www.sciencedaily.com/releases/2022/07/220725105618.htm discussion, but no graphs http://sbgg.org.br/wp-content/uploads/2022/07/1658917123_1_Physical_Activity_Intensity_and_All-Cause.pdf It's a good follow-up to this 2016 paper, which focused on total METS (effort), not workout intensity: Physical activity and risk of breast cancer, colon cancer, diabetes, ischemic heart disease, and ischemic stroke events: systematic review and dose-response meta-analysis for the Global Burden of Disease Study 2013 https://www.bmj.com/content/354/bmj.i3857 They both have the same takeaway: ... adults who perform two to four times the currently recommended amount of moderate or vigorous physical activity per week have a significantly reduced risk of mortality (2022 paper) ... People who achieve total physical activity levels several times higher than the current recommended minimum level have a significant reduction in the risk of the five diseases studied (2016 paper) -- Retiree
  12. Somewhat similar situation. Best solution I've found is treadmill HIIT. I typically warm up 5 minutes, then go: - highest incline (15 degrees) to reduce the number of steps needed, - highest speed I can walk, arms free, with a fast but normal stride for 30-60 secs (8.0 of 15.0 on these machines), - 30 seconds on / 30 seconds off for 10 minutes (I hop my feet to the side panels, but don't slow the machine), - never more than twice / week -- it's kind of a killer w/o for me. At 70ish this is the best pure cardio I've found, with 5 minutes at pace. I usually manage to get my heart rate over 170 max, and over 155 bpm for 5 - 6 minutes total (using a Scosche wrist monitor). I sometimes vary the incline / speed / and interval. Holding the handles / sidebars makes it a bit easier if you're afraid of stumbling. There's not much knee bend, so I don't get any pain. A good elliptical striding machine is also great (maybe even too good) for knee-sparing if the design is such that you can get your H/R up high enough (some of them suck). -- Retiree
  13. I'll be in a similar position some day and have the same question. I have always assumed I could purchase an immediate fixed annuity, e.g. https://www.annuity.org/annuities/beneficiaries/ If an annuity contract has a death-benefit provision, the owner can designate a beneficiary to inherit the remaining annuity payments after death. Any large broker or insurance company should have a product like this -- is there a reason it doesn't work? -- Retiree
  14. I don't think anybody discards the PLOS study. And I think Dr. Dror's advice is sensible at all times: if you have low sun exposure (common in Israel), and don't take vitamins or drink vitamin D fortified milk (not mandated in Israel, or Thailand either), then it's a good idea to follow the "official advice" of the Israeli government (and the WHO, US, and many others) on vitamin D supplements: 600 IU/day (800 IU if over 70). Dr. Dror is also a strong proponent of masking and vaccination (from age 5 on up), btw. However, I suspect that most readers have very little interest in what the doctors and scientists who wrote the PLOS paper actually have to say (beyond the headlines). The paper shows a correlation between very low vitamin D levels in Israel (where this is common -- 64.3% of the Israeli Arab population, which the paper focused on, have < 20ng/mL), and more severe Covid-19. Some people then might then make a series of unsupported assumptions: - a subgroup of Israelis with low vitamin D levels have severe Covid-19, - people with severe Covid-19 everywhere might also have low vitamin D levels, - Covid-19 might be common because low vitamin D is common (up to 80% of some national populations are called "insufficient"), - if very low levels are bad, then high levels might very well be protective, - if high levels are protective, perhaps they're just as good as vaccines, which are also "just" protective against severe disease. - a though might occur that maybe one could take vitamin D instead of getting vaccinated, - indeed, maybe if everybody took vitamin D, they'd all be protected and we wouldn't have a Covid-19 epidemic -- maybe "herd high vitamin D" levels could stop these diseases entirely. Now, my impression is that takes some effort (or disability) to have dangerously low vitamin D levels, of which the most obvious consequence is rickets (which I doubt any of us have ever encountered). It is estimated that in London (which closer to the North Pole than Calgary in Canada is, mind you), fairly white Caucasians need about 9 minutes of mid-day sun exposure (baring hands and face in winter, and arms and shins in warm weather); they estimate 25 minutes for fairly dark-skinned people. And most daily multi-vitamins have several hundred IU (Centrum Silver has 1,000, ordinary Costco / Kirkland Daily Multi has 400 IU), and fortified milk has 400 IU or more per liter. Meeting Vitamin D Requirements in White Caucasians at UK Latitudes https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5946282/ https://www.bytemuse.com/post/interactive-equivalent-latitude-map/ (scroll down a bit to see it). Nevertheless, the VITAL tests -- double-blind RCTs -- show that it is very easy to have levels that are called "insufficient" (up to 80% of the population!) but do not seem to have any health impact that is improved by vitamin D supplements, even when combined with calcium. That's why the New England Journal of Medicine last month advised to stop calling the 20-30 ng/ml range "insufficient," https://www.nejm.org/doi/full/10.1056/NEJMe2205993 VITAL Findings — A Decisive Verdict on Vitamin D Supplementation ... there is no justification for measuring 25-hydroxyvitamin D in the general population or treating to a target serum level. ... people should stop taking vitamin D supplements to prevent major diseases or extend life. -- Retiree
  15. The problems with observational studies (including this one in PLOS) in general, are that: - they report on correlation, not causation, - they do not investigate the entire population, i.e. why do other people with low vitamin D not have Covid-19? - it is very difficult to rule out confounding (simultaneous or parallel) variables that might be the actual cause. Thus ... - the observed variable (in this case vitamin D) may itself be a symptom of a shared cause. The PLOS authors are entirely forthcoming in pointing this out; see the "important limitations of the study" section (last two paragraphs of the Discussion) First, vitamin D deficiency can be one indication of a wide range of chronic health conditions or behavioral factors that simultaneously increase COVID-19 disease severity and mortality risks. This is how good science works -- you strengthen your case by raising the strongest possible arguments against it. A few paragraphs before they also note that: A recent study suggested an association between UVA or UVB exposure to COVID-19 disease severity independent of vitamin D [34]. That reference [34] says: https://academic.oup.com/ajcn/article/115/4/1123/6448988 Our data also support an association between exposure to UV-B or UV-A, independently of vitamin D and SARS-CoV-2 infection, so results for predicted 25(OH)D need to be interpreted cautiously. [34] also points to this editorial, which discusses possible causation: https://academic.oup.com/ajcn/article/115/4/987/6530387 Putative roles of solar UVA and UVB exposure and vitamin D supplementation in reducing risk of SARS-CoV-2 infection and COVID-19 severity 3 mechanisms seem to be related to solar UV exposure: vitamin D production, NO liberation [nitrous oxide, I assume], and viral inactivation. The PLOS article also points to this note, whose title is self explanatory: Letter to the Editor: Vitamin D deficiency in COVID-19: Mixing up cause and consequence https://www.metabolismjournal.com/article/S0026-0495(20)30298-5/fulltext Finally, the PLOS article has a long series of references (26 - 37), that study Arab populations in general to investigate possible cultural and genetic reasons for the "high percentage of vitamin D deficiency among Israeli Arabs" (although their own data "showed no effect of ethnicity on disease severity and mortality"). These other studies discuss factors that that may engender susceptibility to Covid-19 in parallel with, rather than being the result of, low vitamin D. Again, let me reiterate the central weakness of studies like the PLOS article. I take it at face value that a lower vitamin D status was more common in patients with the severe or critical disease. But I also recognize that whenever a doctor advises a non-Covid, low vitamin D patient to take a supplement, and also to get a little more fresh air, sunshine, and exercise, s/he is also demonstrating just how easily confounding variables may undermine observational studies. -- Retiree
  16. The July 27 2022 NYTimes article (legally unlocked): Source link: They note that: Labs in the United States then arbitrarily set 30 nanograms per milliliter as the cutoff point for normal vitamin D levels, a reading so high that almost everyone in the population would be considered vitamin D deficient. The main study (called VITAL) the NYTimes points to is here: https://www.nejm.org/doi/full/10.1056/NEJMoa2202106 CONCLUSIONS Vitamin D3 supplementation did not result in a significantly lower risk of fractures than placebo among generally healthy midlife and older adults who were not selected for vitamin D deficiency, low bone mass, or osteoporosis. A second double-blind study of 20,000 older Australians they point to is (emphasis mine): https://www.thelancet.com/journals/landia/article/PIIS2213-8587(21)00345-4/fulltext Administering vitamin D3 monthly to unscreened older people did not reduce all-cause mortality. Point estimates and exploratory analyses excluding the early follow-up period were consistent with an increased risk of death from cancer. Pending further evidence, the precautionary principle would suggest that this dosing regimen might not be appropriate in people who are vitamin D-replete. I'll mention in passing that this is exactly what happened with the antioxidant supplements (beta-carotene, vitamin A, vitamin C, vitamin E, and selenium) studied in this well-known paper (a review of seventy-eight randomised trials with 296,707 participants) -- they did not extend, and in some cases reduced, life span: https://pubmed.ncbi.nlm.nih.gov/22419320/ Back to vitamin D, the editorial in the New England Journal of Medicine the Times points to says (emphasis mine): https://www.nejm.org/doi/full/10.1056/NEJMe2205993 VITAL Findings — A Decisive Verdict on Vitamin D Supplementation ... More than 10 million serum 25-hydroxyvitamin D tests are performed annually in the United States. Results from these tests often include the classification of vitamin D “insufficiency” (<30 ng per milliliter) and “deficiency” (<20 ng per milliliter), prompting vitamin D supplementation. In this ancillary study and other VITAL studies, no subgroups defined according to baseline 25-hydroxyvitamin D level, even below 20 ng per milliliter, benefited from supplements.2,3,7 Thus, there is no justification for measuring 25-hydroxyvitamin D in the general population or treating to a target serum level. ... What are the implications of VITAL? The fact that vitamin D had no effect on fractures should put to rest any notion of an important benefit of vitamin D alone to prevent fractures in the larger population. Adding those findings to previous reports from VITAL and other trials showing the lack of an effect for preventing numerous conditions suggests that providers should stop screening for 25-hydroxyvitamin D levels or recommending vitamin D supplements, and people should stop taking vitamin D supplements to prevent major diseases or extend life. -- Retiree
  17. With all due respect, the more apt comparison is to a randomized controlled trial (RCT) in which a subset of patients receive a placebo ("blind") treatment. We don't know how many of the students had palpitations, chest pains, etc. because they received injections, and were in a group of young people who (probably) expected to have some kind of reaction, or might have had a similar symptom by coincidence in the same period. Cohort studies are particularly useful over the long term, with large groups, unambiguous outcomes (like death), and variables that can't be blinded; e.g. the effect of cigarette smoking. Note that according to Table 5, there was no statistically significant variation in any of the 11 electrocardiograph measures taken before, during, and after the test. This isn't my area of expertise, but this appears to be a well-conducted and useful study partly because it reports its findings, and doesn't overreach by making unsupported claims about cause and effect. -- Retiree
  18. To get back to the original question, I think there are several reasonable explanations. First, Walmart sells an apparently identical item -- same part number -- for $9.09. Gross profit 24.4% (est) 2022, but for items like this I could imagine they're paying the same as you or less per item. https://www.walmart.com/ip/DT3266F-Portable-Digital-Multimeter-Clamp-Meter-AC-DC-Voltmeter-Ammeter-Tester/171810582? Second, the marginal cost of production of one unit is probably very, very low -- think of cosmetics. There are many similar products, with minimal product differentiation, and assembled with minimal labor. I would think that just about all of the parts are just commodity items, some of which (the switch and most of the internal electronics) are used for other electronic doodads as well. Third, it's not unreasonable to imagine that even, if Walmart "owns" this particular design, the Chinese producer might have the right to sell to the ASEAN market. Or might have just licensed it to Walmart's (I think) 24 countries themselves. Fourth, these particular units might have failed Walmart's quality controls (laughs!), but are still good enough for most home applications; e.g. seeing if a wire is live, which doesn't require high accuracy. Think of factory outlet stores -- selling rejects is a common business model. Fifth, yes, companies do go bankrupt, and yes, their stock is usually sold off very quickly and cheaply by the creditor (who is in the money business, not the clamp business). Think of Big Lots stores. Sixth, Lazada is locked in a death battle with Shopee -- has either one ever had a profitable year? So for now, at least, losing money to build market is part of the business plan. Seventh, I think that our notion that it should be more expensive is anchored in the fact that very similar looking tools may provide more functionality and much higher quality / circuitry, for a higher price; check out Fluke. Interesting question, -- Retiree
  19. If it were me, I'd - remove the micro-SD, - stick it in an adapter that allows plugging into a computer USB port, - copy the SD to your disk (you said it's mostly still readable, right?), - maybe try PhotoRec, but the documentation implies it will not be useful for late-arriving files (which might have been split up among free spaces on the SD card if you've used it for a while), - use chkdsk from a command window without the -F option, so it just tells you what it would do, - finally, either use chkdsk or the GUI tool via Explorer to fix the (hidden) disk index as necessary (which might save or lose) if you want to keep using the micro-SD. I hope I understand your situation correctly, and good luck, -- Retiree
  20. There's a procedure called immediate implant that can be used. It's a judgment call by the dentist; these guys report on a bunch of them. The conclusion from here (and other published studies) is that it's a good procedure if you're a good candidate for it ???? https://www.aegisdentalnetwork.com/cced/2019/03/immediate-placement-of-dental-implants-in-molar-extraction-sockets-an-11-year-retrospective-analysis Fwiw I recently went to see if immediate implant was an option for a bad first premolar / bicuspid that I suspected needed pulling (quite a bit of gum and bone recession over the years, and the Dental Hospital had advised yanking it a decade ago). Long story short, my new doc at Phya Thai recommended a bone graft -- best case it could save the tooth for another 10 years, middle case it would improve the situation prior to an implant, and worst case it would cost a bit and do no harm. About 4 months in now; so far so good. -- Retiree
  21. From the first study (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8788157/). Emphasis mine: To date, 5.5 billion vaccine doses have been administered [1] ... Ultimately, two studies [13,14] (case report and case series) were retrieved for inclusion in the review. The studies comprised data from four patients (three males and one female) Three of the patients received essentially the same treatment as the OP -- two recovered, and two are "recovering" (see Table 1). The only study they cite in support of a "statistically significant" connection (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8267343/) says: But, given the low level of evidence (i.e., studies with no control group), weakness in data collection (i.e., using self-reports and/or medical records), and high heterogeneity among studies reviewed, these results should be interpreted with caution. ("high heterogeneity" here means they're different sorts of studies, so results can't be readily combined) From the second article, there's just one patient -- who had tinnitus before she was vaccinated (emphasis mine): In the current study, a woman ... first experienced bilateral tinnitus in 2020, it remained stable thereafter. ... The THI also decreased to 12 by the end of September 2021. About a month later, the patient received her first dose of the vaccine and the second dose one month after. ("THI" is a measure of severity) Point is that publications are often quite limited in their evidence and conclusions, but are also very forthcoming about these limitations, and worth reading all the way through. -- Retiree
  22. Getting back to the question, the answer is yes, be patient. The aftertaste cleared up in about 5 days. My takeaways: -- use water, rather than a stick, to help carbon and resin pour down the funnel in to the filter cylinder (to avoid pulverizing the powder). - -with a UF membrane and the Mazuma filter, allow more time for initial flushing through all three stages -- not just the carbon + resin stages. I didn't want to clog the UF membrane, so I don't think I let the drinking spigot run long enough -- my bad. I suspect the taste was due to teeny bits of resin & DVB getting caught in the UF membrane, and in the bottom of the resin tank. On the Mazuma, the drinking water flow pipe is a little lower than the dishwashing spigot; my old tank had them at the same level. The membrane probably fouled a bit in the first few uses, and took longer than expected to dissolve out. With a traditional ceramic filter, I usually stiff brush the ceramic after a day or two to clear off the fine carbon and resin that made it through. The UF membrane does not appear dirty (and can't be brushed anyway). Still, next time I'll take it out and try to spray-clean it after a day or two, and maybe try using a rubber hose to backwash it -- https://www.sciencedirect.com/science/article/am/pii/S0376738816319937 has an interesting backwash discussion. And there are various chemical solutions that can be used for periodic cleaning down the road, if needed. Thanks all for comments, -- Retiree
  23. Yes, it's puzzling. WHO International Agency for Research on Cancer https://gco.iarc.fr/today/online-analysis-map (the table tab, sorted by value) Estimated age-standardized incidence rates (World) in 2020, all cancers, both sexes, all ages Population Value Australia 452.4 (50% of all Aus are diagnosed with cancer by 85, www.cancer.org.au) New Zealand 422.9 Ireland 372.8 United States of America 362.2 (40% lifetime risk, www.cancer.gov) Denmark 351.1 The Netherlands 349.6 Belgium 349.2 Canada 348.0 France 341.9 Hungary 338.2 Norway 327.5 United Kingdom 319.9 Switzerland 317.6 Germany 313.2 .... Thailand 164.0 #88
  24. Very sorry to hear that. I hope that you will find, as many do, that over time at least the tinnitus aspect can become a little less intrusive. -- Retiree
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