[kovidgoyal]

Originally Posted by Hypernova

import re

class AdvancedUserRecipe1234495609(BasicNewsRecipe):
    title          = u'Physicsworld'
    oldest_article = 7
    max_articles_per_feed = 100
    no_stylesheets        = True
    use_embedded_content  = False
    remove_javascript     = True
    remove_tags_before = dict(name='h1')
    remove_tags_after = [dict(name='div', attrs={'id':'shareThis'})]
    preprocess_regexps = [
   (re.compile(r'<div id="shareThis">.*</body>', re.DOTALL|re.IGNORECASE),
    lambda match: '</body>'),
]    
    feeds          = [
                          (u'Headlines News', u'http://feeds.feedburner.com/PhysicsWorldNews')
                      ]

Note that to ensure that calibre can get all the article, you need to login. Making a custom recipe with login is, however, beyond my skill.

The next release of calibre will have a recipe for physics world with login