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Project Gutenberg (PG) is a volunteer effort to digitize and archive cultural works, as well as to "encourage the creation and distribution of eBooks." [2] It was founded in 1971 by American writer Michael S. Hart and is the oldest digital library. [3] Most of the items in its collection are the full texts of books or individual stories in the ...
Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. [1] Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water. [ 2 ]
Open Library is an online project intended to create "one web page for every book ever published". Created by Aaron Swartz, [3] [4] Brewster Kahle, [5] Alexis Rossi, [6] Anand Chitipothu, [6] and Rebecca Hargrave Malamud, [6] Open Library is a project of the Internet Archive, a nonprofit organization.
Its scope covers Punjabi culture. The library funded by the Nanakshahi Trust was launched online in August 2009. It is located at Chandigarh. [47] [48] Paperity: General 1,500,000+ articles from 4,200+ journals An aggregator of open access scholarly journals. Contains full-text articles from all academic disciplines, from different countries ...
Thus, to avoid crashing the e-mail system, he made the e-text available for people to download. This was the beginning of Project Gutenberg as the first digital library. Hart began posting text copies of such classics as the Bible and the works of Homer, Shakespeare, and Mark Twain. As of 1987 he had typed in a total of 313 books in this fashion.
Negatively charged sites on colloids attract and release cations in what is referred to as cation exchange. Cation-exchange capacity is the amount of exchangeable cations per unit weight of dry soil and is expressed in terms of milliequivalents of positively charged ions per 100 grams of soil (or centimoles of positive charge per kilogram of ...
Project Gutenberg Australia, abbreviated as PGA, is an Internet site which was founded in 2001 by Colin Choat. It is a sister site of Project Gutenberg , though there is no formal relationship between the two organizations.
In statistics, an exchangeable sequence of random variables (also sometimes interchangeable) [1] is a sequence X 1, X 2, X 3, ... (which may be finitely or infinitely long) whose joint probability distribution does not change when the positions in the sequence in which finitely many of them appear are altered.