Radiochemistry 59, 579–586. The abstract reports extraction of Ce(IV) and Th(IV) from nitric acid into TBP/kerosene, followed by selective cerium stripping with peroxide and subsequent thorium stripping with water. The publisher identifies the author by initials; no unverified expansion of that name is supplied.
Journal of the Chemical Society, Dalton Transactions, 196–200. The published title uses bracketed formulas and superscript oxidation states. The original abstract records octahydrotriborate reactions and a borallyl iridium product; it must not be cited as direct crystallographic proof of a different rhodium compound.
Inorganic Chemistry 28, 1087–1091. Synthesis of the diphosphaborane and crystallographic identification of an amine-substituted phosphaborane side product. A count of boron NMR signals alone is not a substitute for its positional structure determination.
Full title: O2 A-band line parameters to support atmospheric remote sensing. Part II: The rare isotopologues. Section 3, manuscript page 4, distinguishes rotational from total and states the odd- nuclear-spin statistical restriction for the dominant oxygen isotopologues.
Official terminology entry S06004. Describes dependence of photophysical quantum yields on reagent concentration, including the linear dynamic-quenching relation underlying the Stern-Volmer equation.
Entry S05501, citing the 1972 colloid terminology manual, page 610. The definition establishes counterion-valence sensitivity; the sixth-power estimate additionally assumes the high-potential DLVO model.
Liangyu Li and colleagues, Nature Communications 13, 2870, DOI 10.1038/s41467-022-30616-w. Primary demonstration of rechargeable alkaline Zn-air cells; morphology, zincate transport and passivation. This later experiment corroborates rechargeability rather than supplying an official exam answer.
Chemical Reviews 116, 10414–10472. Full title: Bimetallic Nanocrystals: Syntheses, Properties, and Applications. Used for liquid-phase alloy/core-shell synthetic strategies; no original source figure reproduced.
Dalton Transactions 51, 9256–9264, DOI 10.1039/D2DT00355D. First-principles study finds weaker iron-carbon interaction with sulfur. Later mechanistic corroboration, not a student answer set for this examination.
Journal of the American Chemical Society 72(11), 4847–4854 (1950), DOI 10.1021/ja01167a001. The publisher title/issue metadata and indexed original first-page discussion were inspected; direct publisher full-text retrieval was unavailable. The citation supports the historical sulfur-hydrosol nucleation/growth model, not a claim that it has been demonstrated for all nanoparticle syntheses.

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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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