Antioxidants: Positive or Negative Actors?

Positive Woman or Negative Man?

Browser-Based Applications: Positive or Negative Transference?

Applications that run on top of web browsers dominate the Internet today. Given the many similarities among these applications’ features, positive transference from one to another is often seen as an important source of ease-of-use for such applications. This paper examines the many differences in the way similar features are implemented in different browserbased applications, analyzing the way...

Select actionable positive or negative sequential patterns

Negative sequential patterns (NSP) refer to sequences with non-occurring and occurring items, and can play an irreplaceable role in understanding and addressing many business applications. However, some problems occur after mining NSP, the most urgent one of which is how to select the actionable positive or negative sequential patterns. This is due to the following factors: 1) positive sequenti...

p73: a Positive or Negative Regulator of Angiogenesis, or Both?

The role of p73, the homologue of the tumor suppressor p53, in regulating angiogenesis has recently been extensively investigated, resulting in the publication of five articles. Of these, two studies suggested a suppressive role, while the others implied a stimulatory role for the p73 isoforms in regulating angiogenesis. A negative role for TAp73, the full-length form that is often associated w...

Antioxidants - friend or foe?

Particularly in the field of advertising and in popular scientific journals, antioxidants such as β-carotene (from carrots) or lycopenes (from tomatoes) and the vitamins C and E are one-sidedly portrayed as substances capable of offering protection against cancer or ageing because they diminish or prevent the effects of free radicals. However, free radicals should by nomeans be considered as be...