37 Matching Annotations
  1. Mar 2025
    1. こうして電磁気的に引きつけられた原子同士の分子内結合を記述する為のパラメータとして、電気陰性度という尺度がある。 これは原子がどの程度原子外にある電子を引きつけるかを示す尺度である。結合した2つの原子の電気陰性度に極端な差異がある場合は、電気陰性度が大きい原子の方に最外殻電子が完全に移動してしまう。この状態における分子内結合をイオン結合という[6]。 それとは逆に両者の電気陰性度が完全に釣り合っているときは、最外殻電子を2つの原子で「共有」する状態になる。この状態を非極性共有結合という[6]。電気陰性度が両者の中間にある場合は、最外殻電子を一方の原子にやや引きつけた「極性」のある共有状態になる。この状態を極性共有結合という[6]。非極性または極性の共有結合の事を共有結合という。

      極性:polarityとは分子の電気的な偏りで、電気陰性度の差によって生じます

      イオン結合(イオンけつごう、英語:ionic bond)

      共有結合(きょうゆうけつごう、(英: covalent bond)

      共有結合とは何か?極性と非極性 (Chemistry: What is a Covalent Bond? (Polar and Nonpolar)

  2. Aug 2024
  3. Jan 2024
  4. Feb 2023
    1. Mark Pilgrim counted 9 different flavors of RSS and there are 2 different variants on the Atom specification. Specifically, we’ll look at Atom 1.0 and RSS 2.0.
  5. Jan 2023
  6. Dec 2022
  7. Jun 2022
    1. You can also use get a feed directly with a username: https://www.youtube.com/feeds/videos.xml?user=<username> The one I use most is the one for playlists (if creators remember to use them). https://www.youtube.com/feeds/videos.xml?playlist_id=<playlist id>

      bash $ curl -s "https://www.youtube.com/c/TED" | grep -Po '"channelId":".+?"' | cut -d \" -f 4 | while read -r YTID ; do echo -n "Youtube-ID: $YTID " ; curl -s "https://www.youtube.com/feeds/videos.xml?channel_id=$YTID" | grep -m 1 -P -o "(?<=<title>).+(?=</title>)" ; done Youtube-ID: UCsT0YIqwnpJCM-mx7-gSA4Q TEDx Talks Youtube-ID: UCsooa4yRKGN_zEE8iknghZA TED-Ed Youtube-ID: UCy9b8cNJQmxX8Y2bdE6mQNw TED Audio Collective Youtube-ID: UCBjBZmguQzn6WCYR7DQykLw TED Fellow Youtube-ID: UC6riU7xaRItrH_8_P6rYsfQ TED Institute Youtube-ID: UCV8cNYL6xPS-MxkQ2BTsX6Q TEDPrizeChannel Youtube-ID: UCDAdYdnCDt9zx3p3e_78lEQ TED Ideas Studio Youtube-ID: UC-yTB2bUcin9mmah36sXiYA TEDxYouth Youtube-ID: UCAuUUnT6oDeKwE6v1NGQxug TED

  8. May 2022
    1. 'art19': 'https://art19.com/xmlns/rss-extensions/1.0', 'atom': 'http://www.w3.org/2005/Atom', 'atom10': 'http://www.w3.org/2005/Atom"', 'cc': 'http://web.resource.org/cc/', 'content': 'http://purl.org/rss/1.0/modules/content/', 'creativeCommons': 'http://backend.userland.com/creativeCommonsRssModule', 'dc': 'http://purl.org/dc/elements/1.1/', 'ddn': 'http://discoverydn.com/about', 'feedburner': 'http://rssnamespace.org/feedburner/ext/1.0', 'feedpress': 'https://feed.press/xmlns', 'geo': 'http://www.w3.org/2003/01/geo/wgs84_pos#', 'georss': 'http://www.georss.org/georss', 'googleplay': 'http://www.google.com/schemas/play-podcasts/1.0', 'itunes': 'http://www.itunes.com/dtds/podcast-1.0.dtd', 'media': 'http://search.yahoo.com/mrss/', 'npr': 'https://www.npr.org/rss/', 'nprml': 'https://api.npr.org/nprml', 'rawvoice': 'http://www.rawvoice.com/rawvoiceRssModule/', 'rdf': 'http://www.w3.org/1999/02/22-rdf-syntax-ns#', 'slash': 'http://purl.org/rss/1.0/modules/slash/', 'sr': 'http://www.sverigesradio.se/podrss', 'sy': 'http://purl.org/rss/1.0/modules/syndication/', 'wfw': 'http://wellformedweb.org/CommentAPI/',
      • iTunes (Apple)
      • Media RSS (Yahoo)
      • Simple Lists (Microsoft)
      • blogChannel (Winer)
      • TrackBack
      • Creative Commons
      • GeoRSS ( WorldKit)
      • Content
      • Syndication
      • Dublin Core (DC)
      • Google Base (Google)
      • Product RSS (Buy.com)
      • OpenSearch (A9)
      • Remote Ads (FeedShow)
      • Access (Bloglines)
      • Simple Sharing Extensions (Microsoft)
      • (coming soon)
      • Create Personal Namespace (create your own)
    1. `rel=”alternate”’ - used to refer to the HTML version of an entry or feed `rel=”related”’ - used to refer to related feeds `rel=”self”’ - used to refer to the canonical URL for this feed or entry `rel=”enclosure”’ - used to refer to podcasts, or other related rich media content `rel=”replies”’ - used to refer to a feed containing the comments related to this entry `rel=”via”’
  9. Mar 2021
    1. Some interesting, but small subtleties between Atom and RSS described here. So few people dig into these things at this level anymore.

  10. Jun 2020
    1. What happens to matter when it undergoes chemical changes? The Law of conservation of mass says that "Atoms are neither created, nor distroyed, during any chemical reaction." Thus, the same collection of atoms is present after a reaction as before the reaction. The changes that occur during a reaction just involve the rearrangement of atoms.
  11. Jan 2017
  12. Nov 2015