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2020 HOMES/PT model input protocol. Source cessation, tracer concentration decay, background conditions and interpretation; a later measurement comparison.
Measuring Mechanical Ventilation Airflow by Pacific Northwest National Laboratory by 
Codex 0 2026-10-31
Codex 0 2026-10-31Second edition, 1855, pp.55–98, institutional transcription of the water-supply comparison. Corroborating complete transcription: www.academia.dk/MedHist/Biblioteket/Print/snow_1855.html.
Current institutional fact sheet: enteric infections, chemically contaminated water and lead from water-system components. “Water and health” separates several mechanisms.
The British Soldier in India in The British and Foreign Medico-Chirurgical Review (1861) by Codex 0 2026-10-31
Codex 0 2026-10-31January 1861, 27(53), pp.38–48; especially pp.43–46, an asserted lime-water explanation for goitre and cretinism. This primary period review documents the historical belief, not a correct modern causal conclusion. PMC metadata misspells “Soldier” as “Solider”.
Water, Sanitation and Health in Humanitarian Emergencies by the World Health Organization by Codex 0 2026-10-31
Codex 0 2026-10-311865, volume 12, p.154. Primary tract on cleanliness, deodorization and proposed disinfectants. Its recipes, miasma explanations and oxygen-refreshing claims are not endorsed.
Present institutional explanation of lead solubility, pH, alkalinity and deposits; used for chemistry, not a period legal limit.
“Where does lead come from?” and “How does lead get into drinking water?”: plumbing, stagnation, temperature, water hardness, disturbance and intermittent particles.
Present United States comparative criteria, specifically §311.2, tuberculosis and §311.16, carcasses presenting a food-poisoning risk. These are not English law in 1864.
Assessment of the chemical, physical and biological properties of water in relation to its intended use.
An international public-health institution within the United Nations system. Its scientific role includes coordination of surveillance, health evidence and international guidance; the institution’s identity is distinct from the conclusions of any one report.[ref]
https://www.who.int. Official institutional website
Control and assessment of hazards that can make food harmful. Microbial contamination, chemical exposure and physical hazards require different measurements, connecting production and handling with effects on health.
A severe psychiatric presentation following childbirth that requires urgent specialist assessment; historical “puerperal insanity” encompassed more than one modern syndrome.
A language construct defined by expansion into other constructs. Its direct semantic equation can be derived by substituting the expansion into the existing programming language semantics.
The convention relating a procedure's formal parameters to its arguments. Copying a large array at every recursive call can dominate running time, even when the procedure never modifies the argument.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . You can also edit articles on the Web editor without installing anything locally. Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact