ABSTRACT
Biochemistry is a very practice-oriented courses,but the experiment has high cost,long cycle characteristics,and thus help ease the creation of virtual laboratory experiments and the conflict between teaching resources and the demand.We rely on our campus network to build a virtual biochemistry laboratory,with a view to promoting the biochemistry course construction and reforming the teaching methods
ABSTRACT
An x-ray streak camera with wide dynamic range and a large slit photocathode of 30 mm length has been developed and calibrated. In order to achieve wide dynamic range, a conventional streak tube has been improved and the camera system has been designed without microchannel plate electron amplifier. As a result, a dynamic range of 922 is achieved in a single shot mode with laser pulse of 30 ps (full width at half maximum) at time resolution of better than 31 ps.
ABSTRACT
Doctors'language can help the patients and hurt them as well just like their bis-toury.Warm words give the patients confidence,hope and energy to beat their disease.When doctors communicate with the patients,their words are not only the important tool but also a kind of art.This article displays five artistic characters of doctors'words such as morality,etiquette,emotion,preciseness and secrecy.
