This paper expounded of the connotation of causality and causal anomaly; it is pointed out that with closed systems the existence of tcahyons is compatible within the causality requirements of the theory ofrelativity, but the possibility of experimentation with tachyons beingsuitable for signaling must be excluded.

In this master dissertation, under the fundamental frame of general relativity, we study the tachyon inflation, D-stars in the spacetime with a nonzero cosmological constant and it s observable effects by using some modern mathematical methods such as differential equation and qualitative analysis.

This article treats about the status on the new scientific problems of physics and electronics in the 21st century,involving vacuum energy,negative mass of electron,quantum potential,virtual particles,superstring theory and tachyons;as well as the EPR thinking experiment,quantum entanglement ,quantum teleportation,quantum information theory and quantum computers.

Experimental study on human osteosarcoma OS-732 cell line irradiated combined fast neutron with photon;

Fast neutron radiotherapy for soft tissue sarcoma;

Study on structural parameter of PIN fast neutron dose detector;

The Curing mechanism of the quick-drying putty is studied, too.

Evaluation of jolly factors stimulus therapy on patients with chronic headache caused by cerebral trauma;

The happy factors we collected were their achievements in their early life.