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particle-monitoring
particle-monitoring


Author Comment Last activity Moderation
mathew "the paper is a great substrate! cool exercise. " | Read more » about 4 years ago
liz "Sent in my a community member, here's a classroom example from 1991 for an activity to make sticky pads, install them around their school yard, ana..." | Read more » about 4 years ago
AdditiveFutures "stacked acrylic sheets. volumes determined through cutting thin sheets with a laser cutter.. " | Read more » over 4 years ago
stevie "Hi there! This wiki page has a lot of information on it about the differences between passive and optical particulate matter monitors. https://publ..." | Read more » over 4 years ago
DavidMack "I would stick with the aluminum. It's probably the most commonly used material for PM monitoring because as you stated non-conducting materials ar..." | Read more » over 5 years ago
mathew "thanks! I've had some trouble getting the illumination aligned with the very tall illumination arm I made. Its complicated as well by the cable of..." | Read more » over 5 years ago
richardbowman "Hi @matthew, great that you've got some images :) Looking at your graticule, I think your illumination might be misaligned - the blue-yellow gradi..." | Read more » over 5 years ago
mathew "Here are some image sets including a flat field calibration and scale from the PSL imaging. 20160923_PSL_Sphere_SET.zip " | Read more » over 5 years ago
richardbowman "Brilliant - I've wanted to make a carry case for absolutely ages, but other things keep getting in the way. I'll be excited to see what you come u..." | Read more » almost 6 years ago
mathew "a note to myself: I found this article on calibrating microscopes useful background. http://www.agarscientific.com/media/import/Calibration-of-Micr..." | Read more » almost 6 years ago
mathew "thanks Richard! I'll try the new files soon. I'm excited to contribute some mounting files to the project and a carrying case. Will get on those in..." | Read more » almost 6 years ago
richardbowman "Hey, nice work :) I have also had problems with the legs getting detached during printing, and discovered there was a bug in my OpenSCAD code - it..." | Read more » almost 6 years ago
mathew "oh yes! please read our wiki on frac sand and PM, its getting pretty fleshed out: https://publiclab.org/wiki/frac-sand follow notes as they happen..." | Read more » about 6 years ago
sara "Super excited to read about this project, are their more recent notes on how your project's progressing? " | Read more » about 6 years ago
mathew "I found this great tutorial on automating ImageJ scripting and batch processing. It got me up and batch processing in short order: Arjun Mehta, UC..." | Read more » about 6 years ago
SimonPyle "@marlokeno That's a great tip for eyeballing and catching dust. On that note, as I clean up a prototype of some code to automate this process, I'm..." | Read more » about 6 years ago
marlokeno "@mathew, @SimonPyle, @AmberWise, @Damarquis, @Pagyebo Wonderful work- I can't imagine counting particles while sizing them, etc. So cheers to the ..." | Read more » about 6 years ago
mathew "Also see @Damarquis's note on using MaxEntropy https://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-threshold-and-saving-result..." | Read more » over 6 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 » over 6 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 » over 6 years ago
eustatic "What EPA Regions are the previous 4 examples of citizen enforcement? EPA's attention is a limited resource, and EPA's attention in region 6 is hea..." | Read more » over 6 years ago
wsg "Hi Gretchen, Really interesting project which you should be able to generate some very interesting metals data with the WheeStat. I have been work..." | Read more » over 6 years ago
jeffalk "You probably know about the EPA site with monitoring data around the Chicago coke facilities. The EPA data could be used to compare to whatever dat..." | Read more » almost 7 years ago
liz "This is incredible work!!!! You guys are awesome! " | Read more » almost 7 years ago