On the basis of symmetry model of cosmos of material and antimatter energy with the center of star of antimatter and material of extra negative energy,this paper analyzed proton and antiproton of negative energy,which have not agglomerated to the star of antimatter and material of extra negative energy,and it puts forward that the space so called"empty with nothing"can produce young galaxy.

A matter-antimatter symmetric universe model is constructed with a center of special big negative energy antimatter-matter planet.

Determination of cobalt content in positive material for Ni-Cd battery;

The analytical method for simultaneous determination of Ca, Mg, Ba and Fe elements in positive material for Ni-Cd battery by means of Inductively Coupled Plasma Atomic Emission Spectrometry were introduced.

This review summarizes some new possible energy sources which include hydrogen atom, antimatter, antigravity, helium-3 and methane hydrate.

The possibility of using antimatter in military applications seems to increase with further study of its production,collection and storage.

Positron,an antiparticle of electron,is much more easily obtained than other s antipartices,such as antiproton,antihydrogen,thus electron-positron system is the most suitable way for studying the combination of common matter and antimatter.

Living things produce anti-compound,which has the function of restraining,expelling and poisoning,and make chemical defense in the struggle of existence.