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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
warren "Collecting notes on different sensors here! https://publiclab.org/q/15751 " | Read more » over 4 years ago
mathew "@eustatic-- you definitely didn't kill momentum on the project! Once we had the calibration locked in, we needed something to test for. The Kitag..." | Read more » over 4 years ago
gretchengehrke "@eustatic, no worries -- Mathew got this pretty far (complete, perhaps?). The video is embedded in this page: https://publiclab.org/wiki/formaldehy..." | Read more » over 4 years ago
eustatic "dot " | Read more » over 4 years ago
eustatic "I ended up with pump calibration kit...did i kill the momentum on this project? signs point to yes @gretchengehrke I think mat did a youtube video " | Read more » over 4 years ago
mathew "You can see more about the shape descriptors for each particle here: https://publiclab.org/notes/mathew/09-19-2015/using-imagej-to-process-passive-..." | Read more » over 5 years ago
mathew "The image analysis creates: perimeter of each particle area of each particle circularity of each particle Circularity is the ratio between the..." | Read more » over 5 years ago
warren "Hi! Just re-reading, is it right that the image analysis produces (as it's complete output): perimeter of each particle area of each particle ..." | Read more » over 5 years ago
thomashooper "That is very fantastic from the design, the construct, the starting, the video, the images...Everyone said a new era of computer assisted drug desi..." | Read more » almost 6 years ago
mathew "Followup on automating this process https://publiclab.org/notes/SimonPyle/05-13-2016/automating-imagej-for-particle-image-analysis " | Read more » about 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 "cool opportunity, @Philrosenberg! you may want to share it out with the Public Lab Air Quality list: http://publiclab.org/lists @Marlokeno: The q..." | Read more » about 6 years ago
philrosenberg "Just in case anyone on here is interested, I work for the Institute of Climate and Atmospheric Science at Leeds Uni. We actually have some of the D..." | Read more » about 6 years ago
kevintzoa "@marlokeno "2] In high humidity, is moisture adhering to a fine/ultra-fine particle?" Good question! At TZOA, we have seen humidity increase the p..." | Read more » about 6 years ago
mathew "@marlokeno material and charge probably matter quite a bit. There are several research projects using the charge of certain particles for detectio..." | Read more » about 6 years ago
philrosenberg "@marlokeno Your questions are very good ones. I do not know the details about this instruments, but I do know details based on research grade equip..." | Read more » about 6 years ago
marlokeno "@mathew- As a follower of this discussion, asking couple questions- First, does electric charge of the particles play a role in dust collection? T..." | Read more » about 6 years ago
mathew "Thanks for sharing that, Nicholas. I've started keeping a list of sensor evaluations on the wiki page for optical pm monitors: https://publiclab.o..." | Read more » about 6 years ago
nicholas "I came across this article about testing the ShinyeiPPD42 in a laboratory environment. I think their evaluation is very insightful and encouraging..." | Read more » over 6 years ago
philrosenberg "I work with scientific dust monitors and have written and published calibration protocols for them. I have been intrigued by these low cost sensors..." | Read more » over 6 years ago
mathew "I want to note that while Open Pipe Kit development continues, running this comparison has been a low priority since AQICN is running effectively t..." | Read more » over 6 years ago