| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| guolivar | "Smoke particles (and by smoke I mean combustion products) come in sizes all the way down to 1nm (0.001micron) and in shapes that make it very trick..." | Read more » | about 7 years ago | |||
| warren | "Geoff from NASA Goddard found a good resource here: https://www.fs.fed.us/pnw/pubs/pnw_gtr251.pdf Apparently under 1 micron! Very small. " | Read more » | about 7 years ago | |||
| DrJessie | "Below are a few additional references and abstracts from Toxnet: CAS Registry Numbers:Calcium Carbonate Studies on Deposition of Submicronic Dust ..." | Read more » | over 7 years ago | |||
| liz | "From @zengirl2 , an article about dehydrated biosolids plant in Detroit, in this case from human waste: https://www.wateronline.com/doc/detroit-bio..." | Read more » | over 7 years ago | |||
| warren | "@RonHuber chimed in on the lists: We hypothesized the calcium carbonate dust emanating from the Cement Kiln Dust waste piles of a cement kiln near..." | Read more » | over 7 years ago | |||
| warren | "Another answer via @Zengirl2 !: I just wanted to add a study I found for Sri Lanka looking at health issues from Lime dust emission. The study loo..." | Read more » | over 7 years ago | |||
| liz | "Thank you all! I heard back form the community member (who was following along reading this), and they thank everyone for this information. The stu..." | Read more » | over 7 years ago | |||
| marlokeno | "Hi- As noted above, chalk, e.g. chalk dust in classrooms, and cement manufacture, are major sources of calcium carbonate pollution. Cement manufac..." | Read more » | over 7 years ago | |||
| warren | "Wig Zamore wrote in today as well, to add: A quick check of PubMed yields two abstracts that may be of interest and are pasted in below. Basicall..." | Read more » | over 7 years ago | |||
| warren | "Cheryl Holzmeyer wrote in to my email to the lists: I don't know if this is too general, but in case it's relevant (calcium carbonate is listed in..." | Read more » | over 7 years ago | |||
| nanocastro | "Hi @xose. Muchas gracias.The multichannel looks good and it has more or less the same sensors (except for NH3). The documentations is still incompl..." | Read more » | over 7 years ago | |||
| xose | "@xose awards a barnstar to nanocastro for their awesome contribution! " | Read more » | over 7 years ago | |||
| xose | "Awesome!! Soon we'll update the Leptos station, a spanish cousin of your beautifull MACA ;) Would be great to meet digitally to exchange impression..." | Read more » | over 7 years ago | |||
| nshapiro | "thanks @nanocastro! if you have any questions for the PL community for the next steps please let us know :) " | Read more » | over 7 years ago | |||
| nanocastro | "Hi @liz. De nada, I think this data portal is quite new. Two years ago I contacted with the person in charge of the BsAs monitoring stations to ca..." | Read more » | over 7 years ago | |||
| liz | "Hi @nanocastro, thanks for cross-posting from your excellent wiki! Some open data friends mentioned this government open data portal for Buenos Air..." | Read more » | over 7 years ago | |||
| richardbowman | "Hello, "Cambridge" here (though I've actually moved now). You're right, a laser diode would certainly get rid of the chromatic issues. I suspect ..." | Read more » | over 7 years ago | |||
| mathew | "That is an interesting question. I think the laser would get rid of chromatic aberration-- its a single frequency of light-- but I'm not sure that..." | Read more » | almost 8 years ago | |||
| marlokeno | "Hi, @mathew and @SimonPyle - Terrific work! After seeing the demonstration mathew gave at the barnraising in November '16, and then looking at Ca..." | Read more » | almost 8 years ago | |||
| mathew | "Flatfield and scale images: " | Read more » | about 8 years ago | |||
| mathew | "Minnesota DEP maps: " | Read more » | over 8 years ago | |||
| mathew | "Wisconsin watch railway map: " | Read more » | almost 9 years ago | |||
| gretchengehrke | "Conductivity readings would indicate the presence of ions, but since there is so much calcium, and also substantial amounts of magnesium etc, it wo..." | Read more » | almost 9 years ago | |||
| eustatic | "would a conductivity reading help indicate the presence of metals? I've only ever done bottle sampling with solvents for metals testing. " | Read more » | almost 9 years ago |