Topics (384k) Articles (398k) Users (410) Discussions (242) Comments (383) Files (13k) New article
For a long ideal chain of independent statistical steps of length , . With fixed chain chemistry and , the molar mass is proportional to . Thus multiplying molar mass by multiplies the radius of gyration by ; solvent quality can change both the statistical segment length and the size exponent.
Material containing radionuclides for which no further use is foreseen and which is subject to radiological control under the applicable framework.
The physical and chemical form in which radioactive waste is immobilised for handling, storage or disposal. Its durability is distinct from that of its container and surrounding engineered barriers.
Separation or transformation of contaminants in liquid waste. evaporation, ion exchange and chemical precipitation concentrate radionuclides into residues that need further management.
Temporary retention of radioactive gas so that nuclear radioactive decay lowers the radioactive activity released. A guaranteed minimum residence time, an average residence time and a tank filling time are different design quantities.
Storage that allows short-lived radioactive constituents to radioactive decay before subsequent handling or discharge. A clearance or discharge decision still requires the applicable measurement and acceptance criteria.
Prevention of an unintended self-sustaining nuclear fission chain reaction in waste management. neutron absorbers, fissile-isotope dilution and their long-term geochemical retention are relevant; a cross-section comparison is not a criticality assessment.
A liquid or gaseous outflow containing radionuclides. Its measured inventory and treatment history are distinct from whether release is authorised under the applicable discharge controls.
Heat deposited by the radioactive decay of radioactive constituents. It persists after a reactor stops sustaining a nuclear fission chain reaction and affects spent-fuel and waste management.
The expected number of alpha decay events per bulk material volume per unit time. Its units are events per cubic metre per second, distinct from absorbed radiation dose or total activity.
A radical chain in which hydrogen and chlorine radical carriers alternate between propagation steps. With M-assisted chlorine initiation and recombination termination, radical steady-state balances can give first order in H2 and half order in Cl2 without requiring equal propagation rate constants.
A step consuming a chain carrier and producing another while converting stable reactants. Two different carriers can have different concentrations even when their propagation fluxes agree.
Removal of chain carriers without creating a replacement carrier. Pair recombination removes two free radicals per elementary event.
Removal of propagating free radicals, for example by combination or disproportionation.
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