But, as the title asks, is there a way to convert the books from pdf to epub? I'm wanting to put the books on my kindle fire, and PDF files are a pain in the backside to use on any form of tablet. On many computers for that matter. Books these size are slow and PDF files are rather large.
The main table of contents in Apple Books is created using a nav element with an epub:type value of "toc". Readers use the table of contents to navigate to key locations in the book. Note that you do not define page numbers for each entry. Apple Books calculates those for the reader to accommodate different font and screen sizes.
Landmarks can also be used to define the start page of a flowing book, which is the first page a reader will see the first time they open a book. Apple Books opens to the first landmark item that contains the epub:type value of "ibooks:reader-start-page". If that value is not specified in the landmarks navigation structure, Apple Books opens to the first spine item that contains one of the following epub:type landmarks values:
Books aren't dead. They're just getting digitized, like everything else. While there's a real charm to owning a stack of bound paper that you can fold the corners of, underline, and read without staring at a screen, ebooks are far more convenient. Your backpack can hold maybe four or five books, but one e-reader or tablet can hold thousands of titles. Plus, e-readers allow you to search text, share the saucy bits, and read at night without a light.
Abstract:The aim of this study was to compare the concentrations of particulate matter (PM) and PM-bound polycyclic aromatic hydrocarbons (PAHs) during the combustion of various types of materials (i.e., oak, beech, and pine wood, polypropylene, polyurethane, paper, cotton, and oriented strand board (OSB)), and to compare the carcinogenic, mutagenic, and toxic potential of the emissions during the burning of these materials. Personal portable sampling devices were used to collect samples and to determine concentrations of PM4, total suspended particles (TSPs), PM-bound PAHs. The samples were collected during controlled fires under laboratory conditions. The highest PM concentration was recorded during the burning of polyurethane (PM4-1818 mg/m3, TSP-2800 mg/m3), while the highest concentration of PAH mixture was recorded when burning OSB (628.5 µg/m3 PM4-bound; 791.2 µg/m3 TSP-bound PAHs). Thus, the highest carcinogenic (85.5 µg/m3), mutagenic (68.2 µg/m3) and toxic equivalents (26.4 ng/m3) of the PAH mixture were noted during OSB combustion. Carcinogenic potential (CP) of PAH group was determined mainly by phenanthrene (CP on average 21.6%) and pyrene concentrations (13.3%). The results of the study express possible adverse effects from PM-bound PAHs released during combustion for firefighters and other people staying near a fire site.Keywords: particulate matter; polycyclic aromatic hydrocarbons; combustion products; fire smoke
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