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  1. Last 7 days
    1. finally the boundary on air pollution on aerosols a boundary which we today have scientific evidence that it actually has 00:07:02 impacts on regulating the state of the atmosphere and the hological cycle pushing the monsoon systems in the southern hemisphere particularly into less rainfall

      Fifth boundary : air pollution

  2. Jan 2023
    1. how to use low-cost sensors to provide real-time, local-scale air quality information. EPA and state and local agencies face persistent challenges meeting such air quality information needs, including challenges in understanding the performance of low-cost sensors.

      GAO statement on low cost senstors

    1. ince September 17, the extens

      HoLU sensor kits, some dutch talk about calibration that needs to be translated, but seems to confuse collocation correction with calibration

    1. Sensor technology is getting cheaper and better. Sensors to measure air quality are also

      second version of dutch HOLU-kit

    1. f you have a sensor kit from Hollandse Luchten, we urge you to disconnect the humidity meter. We recently found out that the humidity

      They quit using these HoLu kits as the data was unrealiable. Here they were removing the humidity sensor as it was causing some problems

    1. ost commercially available sensors are expensive, and cannot be altered orextended to accommodate your specific data collection needs. In open hardware

      open hardware approach (2018) from Waag group

    1. These ‘HoLu kits’ are being distributed in pilots to residents who live in regions where the air quality is poor, such as around the Tata steel factory in the IJmond area. We teach citizens to measure the surrounding air quality and to interpret the data.

      Smart Citizen Lab aspart of Waag.

      pay attention to the HoLu project

  3. Dec 2022
    1. Project description sensortoolkit - Air Sensor Data Analysis Library

      EPA sensor toolkit read the docs with python code

    1. It is a standard practice to test 3 or more identicalsensors at the same time because

      use of three sensors

    2. , the U.S.EPA published reports (hereincalled ‘Targets Reports’) thatprovide recommendations on howto evaluate air sensors thatmeasure criteria pollutan

      EPA target reports

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  4. Sep 2022
  5. Aug 2022
  6. Apr 2022
    1. emma o kelly [@emma_okelly]. (2021, December 6). I was @scoilidepps today looking at ventilation. Built in 60’s with dual aspect classrooms for cross ventilation. Handy outdoor ‘corridors’ too. All designed to prevent the spread of TB. School has also bought HEPA filters for classes. Re Covid it has managed pretty well so far. Https://t.co/KgZgABDeDL [Tweet]. Twitter. https://twitter.com/emma_okelly/status/1467922855333699587

    1. David Fisman. (2021, December 15). HEPA air cleaners in hospital...lets compare cost to ECMO. ECMO course in the US costs around $93,000 CDN; US cost:charge ratio is around 0.2, so let’s say that’s $20,000 CDN. That’s the cost of 50 high end hepa air cleaners! Or you could do 250 CR boxes at around $80 a pop. [Tweet]. @DFisman. https://twitter.com/DFisman/status/1471259305961828355

    1. It will, here again, find amplematerial in the short circuits of Duchamp’s antiart objects: “Metaphor ‘taken atthe letter’: a geometry book suspended by a thread (‘geometry in space’),” not tomention “the ‘Paris air’ ampule.” 10

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  7. Feb 2022
  8. Jan 2022
  9. Dec 2021
    1. Faktor geologi berupa endapan alluvial yang memiliki permeabilitas umumnya rendah dan berada pada topografi landai hingga datar menyebabkan terjadinya intrusi air laut terhadap airtanah dangkal.

      Penyebab intrusi air laut disebabkan oleh jenis material dan juga adanya pengaruh topografi. Sehingga dalam penentuan daerah intrusi air laut hal yang perlu diperhatikan terlebih dahulu ialah apakah material di daerah tersebut memiliki parameter aquifer yang mendukung adanya transport air laut kedaratan, seperti permeabiltas dan porositas.

    2. Pengambilan sampel diperoleh dari sumur gali penduduk sebanyak 100 sampel (n=100) pada periode Maret-Juli 2019 dengan variasi jarak dari pantai 0,04-5,52 km dan elevasi muka airtanah (MAT) antara 0,43-30,01 mdpl.

      Data yang diambil dalam penelitian ini ialah data sumur gali, elevasi, dan juga pada saat kapan data itu diambil. Sehingga untuk peneliti selanjutnya dapat melakukan hal yang sama dan hanya mengkomparasi antara data sebelumnya dan data yang didapatkan.

    1. Genangan air yang tampak jernih membenamkan seluruh pekarangan dan sebagian lantai rumah yang terletak dua kilometer dari muara Sungai Kakap, Kubu Raya, Kalimantan Barat.

      Genangan air bukan hanya membebankan pekarangan rumah tp juga dapat merusak barang-barang masyarakat yang berdampak terhadap genangan air tersebut

  10. Nov 2021
    1. Gösling and Humpe found that no more than 1% of the world population likely accounts for half of aviation emissions.30

      Wow! Will carbon neutral fuels be greenwashing or real solutions? Will carbon neutral SpaceX flights be greenwashing, or real carbon neutrality?

    1. 𝚃𝚘𝚖 𝙻𝚊𝚠𝚝𝚘𝚗 💙. (2021, October 30). From the paper—Ventilation makes a big difference further away, but below 1-1.5m then you’d have to be in a gale to be safe! ✅DISTANCE if you can ✅VENTILATE - works even within 2m, but sadly not so much within 1-1.5m ✅PPE if you have to get close #COVIDisAirborne https://t.co/wYuWdG47He [Tweet]. @LawtonTri. https://twitter.com/LawtonTri/status/1454355692593328132

  11. Oct 2021
  12. Sep 2021
    1. Helleis, Frank, Klimach, Thomas, & Pöschl, Ulrich. (2021). Vergleich von Fensterlüftungssystemen und anderen Lüftungs- bzw. Luftreinigungsansätzen gegen die Aerosolübertragung von COVID-19 und für erhöhte Luftqualität in Klassenräumen. https://doi.org/10.5281/ZENODO.5070421

    1. Derek Thompson. (2021, August 25). Adult hospitalizations since July 1 vs. Vaccinations, by state: 1) The relationship between more vaccines and less hospitalization is pretty straightforward. 2) Holy moly, Florida. Among states with more than one shot per person, FL really is on its own island of pain. Https://t.co/tuTAdUT0OM [Tweet]. @DKThomp. https://twitter.com/DKThomp/status/1430643278337163267

  13. Aug 2021
  14. Jul 2021
    1. For every mile we don't drive, our air gets a little bit cleaner. There are many ways to drive less- walking, biking, taking transit, telecommuting, carpooling, and more. Driving less can also save you money and improve your emotional and physical health. Working from home has been gaining popularity and may offer other benefits such as improved productivity. 

      For every mile we don't drive, our air gets a little bit cleaner. There are many ways to drive less- walking, biking, taking transit, telecommuting, carpooling, and more. Driving less can also save you money and improve your emotional and physical health. Working from home has been gaining popularity and may offer other benefits such as improved productivity.

  15. Jun 2021
    1. Paul Kedrosky. (2021, June 8). Air passengers in the U.S. yesterday were up 20% week-over-week, the biggest advance since February, and the highest total daily passengers—1.98m—Since the pandemic started. I initially thought it was an error and held off posting it, but it’s apparently correct. Https://t.co/E50EW54MR0 [Tweet]. @pkedrosky. https://twitter.com/pkedrosky/status/1402047355029917696

  16. May 2021
  17. Apr 2021
  18. Mar 2021
  19. Feb 2021
    1. Tang, J. W., Bahnfleth, W. P., Bluyssen, P. M., Buonanno, G., Jimenez, J. L., Kurnitski, J., Li, Y., Miller, S., Sekhar, C., Morawska, L., Marr, L. C., Melikov, A. K., Nazaroff, W. W., Nielsen, P. V., Tellier, R., Wargocki, P., & Dancer, S. J. (2021). Dismantling myths on the airborne transmission of severe acute respiratory syndrome coronavirus (SARS-CoV-2). Journal of Hospital Infection, 0(0). https://doi.org/10.1016/j.jhin.2020.12.022

  20. Dec 2020
    1. Two of the fundamental controlson water chemistry in drainagebasins are the type of geologicmaterials that are present and the length of time that water is in contact with those materials

      ini quote penting.

    2. Chemical reactions that affect the biological and geochemical characteristics of a basin include

      di sini dijelaskan berbagai proses utama (dan sering terjadi) pada aliran air di suatu cekungan (basin). proses-proses itu menghasilkan evolusi kimia air.

    3. Withdrawing water from shallow aquifers that are directly connected to surface-water bodies can have a signifi- cant effect on the movement of water between these two water bodies.

      ini terjadi di bantaran sungai di indonesia. rumah-rumah di kawasan itu memiliki sumur yang lokasinya berdekatan atau sangat berdekatan dengan sungai, sehingga dapat dipastikan air sungai ikut tersedot ketika sumur tersebut memompa air tanah. interaksi air tanah dan air sungai terjadi lebih cepat di zona hiporeik, proses filtrasi (penyaringan) air tidak terjadi.

    4. Concepts of Ground Water, Water Table,and Flow Systems

      ilustrasi yang sangat bagus untuk menunjukkan bahwa adanya sumur akan mengubah arah aliran air tanah secara makro.

    1. Svelte’s aesthetics feel like a warm cozy blanket on the stormy web.
    2. Making UIs with Svelte is a pleasure. Svelte’s aesthetics feel like a warm cozy blanket on the stormy web. This impacts everything — features, documentation, syntax, semantics, performance, framework internals, npm install size, the welcoming and helpful community attitude, and its collegial open development and RFCs — it all oozes good taste. Its API is tight, powerful, and good looking — I’d point to actions and stores to support this praise, but really, the whole is what feels so good. The aesthetics of underlying technologies have a way of leaking into the end user experience.
  21. Nov 2020
    1. Coming from stuff like jQuery, a lot of devs who used React were like "wow", and coming from React, Svelte feels amazing too! People just need to try it, it's so incredibly simple too!
  22. Oct 2020
    1. (d) All calculations shown in this appendix shall be implemented on a site-level basis. Site level concentration data shall be processed as follows: (1) The default dataset for PM2.5 mass concentrations for a site shall consist of the measured concentrations recorded from the designated primary monitor(s). All daily values produced by the primary monitor are considered part of the site record; this includes all creditable samples and all extra samples. (2) Data for the primary monitors shall be augmented as much as possible with data from collocated monitors. If a valid daily value is not produced by the primary monitor for a particular day (scheduled or otherwise), but a value is available from a collocated monitor, then that collocated value shall be considered part of the combined site data record. If more than one collocated daily value is available, the average of those valid collocated values shall be used as the daily value. The data record resulting from this procedure is referred to as the “combined site data record.”
      1. Calculate mean of all collocated NON-primary monitors' values per day
      2. Coalesce primary monitor value with this calculated mean
    1. I’ll remember it again after the party’s over, she decided. And somehow that seemed quite the best plan...

      The use of the word quite again--it's like nothing is real, or embodied. There is a lot of flighty language and flighty characters, 'Laura flew' 'butterfly' descriptions of air, and wind, and puffs, and angels--nothing feels grounded. The characters and the place feel like they could just be blown away like dead dandelion puffs.

    1. Then at some moment I just stumbled upon limitations and inexpressiveness of templates and started to use JSX everywhere — and because JSX was not a typical thing for Vue I switched to React over time. I don’t want to make a step back.
    1. 1.1. Monitors For the purposes of AQS, a monitor does not refer to a specific piece of equipment. Instead, it reflects that a given pollutant (or other parameter) is being measured at a given site. Identified by: The site (state + county + site number) where the monitor is located AND The pollutant code AND POC – Parameter Occurrence Code. Used to uniquely identify a monitor if there is more than one device measuring the same pollutant at the same site. For example monitor IDs are usually written in the following way: SS-CCC-NNNN-PPPPP-Q where SS is the State FIPS code, CCC is the County FIPS code, and NNNN is the Site Number within the county (leading zeroes are always included for these fields), PPPPP is the AQS 5-digit parameter code, and Q is the POC. For example: 01-089-0014-44201-2 is Alabama, Madison County, Site Number 14, ozone monitor, POC 2.

      How monitors (specific measures of specific criteria) are identified in AQS data.

  23. Sep 2020
  24. Aug 2020
    1. Lednicky, J. A., Lauzardo, M., Fan, Z. H., Jutla, A. S., Tilly, T. B., Gangwar, M., Usmani, M., Shankar, S. N., Mohamed, K., Eiguren-Fernandez, A., Stephenson, C. J., Alam, M. M., Elbadry, M. A., Loeb, J. C., Subramaniam, K., Waltzek, T. B., Cherabuddi, K., Morris, J. G., & Wu, C.-Y. (2020). Viable SARS-CoV-2 in the air of a hospital room with COVID-19 patients. MedRxiv, 2020.08.03.20167395. https://doi.org/10.1101/2020.08.03.20167395

  25. Jul 2020
  26. Jun 2020
    1. NexistWiki exists at the intersection of Weblogs, Wikis, and Douglas Engelbart's call for massive improvements in addressability and evolvability of information resources. Each object presented on a Webpage with NexistWiki is followed by two objects

      object followed by two objects

    1. disussions about whatever it is the AIR provokes in them.

      discussion provokes

    2. addressable information resource (AIR)
    3. Augmented Storytelling is basically something I crafted that lies at the intersection of Weblogs, Wikis, and Doug Engelbart's call for better addressability in information resource space

      augmented story telling

  27. May 2020
  28. Apr 2020
    1. Bronchoscopy should be performed to evaluate the trachea in patients with a persistent air leak from the chest tube or mediastinal air.