Science Progress articles from June 2002

Science Progress archives from June 2002

The birds from Las Hoyas.
June 22, 2002... Information on the first steps of the avian evolutionary history has dramatically increased during the last few years. The fossil record provides a general view of the morphological changes of the avian flight apparatus from non-volant...

Clinical aspects of photodynamic therapy.
June 22, 2002... Photodynamic therapy is a method for local destruction of tissue or organisms by generating toxic oxygen and other reactive species using light absorbed by an administered or an endogenously generated photosensitiser. It is a highly promising...

Development of the sensory organs.
June 22, 2002... The sensory organs--the eye, ear, and nose- are formed, in part, from ectodermal thickenings: placodes. Their development is distinct from that of other regions of the developing body and they are essential for the development of other...

A new method for measuring intramolecular charge transfer.
June 22, 2002... The direct measurement of intramolecular electron transfer through detection of the electromagnetic (EM) waveform that is emitted during this process is reviewed. The waveform is detected in the time-domain via free-space electrooptic sampling...