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In industrial production, such as steel industry, petroleum and chemical industry, mass of CO, as "waste", was not good used, for example: blast furnace gas, converter gas, yellow phosphorus tail gas, chemical tail gas, calcium carbide tail gas, garbage incineration gas, etc. Above gases are all rich in CO gas, can be used as secondary energy. PKU PIONEER developed a new VPSA-CO separation and purification technology. The new technology can recovery CO from secondary energy, and used it as chemical raw materials. By this way, it can greatly reduce CO2 emissions, save fossil energy, has good economic and social benefits.

Jupiter planet, the biggest planet in the solar system. Is there any water in Jupiter? NASA researchers claim that Jupiter planet has water in 'Great Red Spot'. In the 'Great Red Spot' there is a cyclone running more than 350 years. NASA scientists found water in the cloud over the storm.

"Due to the large core of multimode Optical Fiber, some of the light rays goes zigzag as they bounce off the cladding and others make up the digital pulse may travel a direct route. These phenomena cause the different groups of light rays. These different groups of light rays are referred to as modes. These modes are arrived separately at the receiving point. The pulse, an aggregate of different modes, begins to spread out, losing its well-defined shape. The need to leave spacing between pulses to prevent overlapping limits the amount of information that can be sent. In a core the refractive index diminishes gradually from the center axis out toward the cladding, meaning the refractive index at the center is the most. At the center the light rays moving down the axis advance more slowly than those near the cladding due to the difference in the refractive index. Because of the graded index, the light in the core moves spirally rather than zigzag off the cladding. It significantly reduces its travel distance. The shortened path and the higher speed allow light at the periphery to arrive at a receiver at about the same time as the slow but straight rays in the core axis. Tough it takes the same time but as a result the digital pulse suffers less dispersion. Specific Applications * liquid absorbance analytical technique * solid or liquid reflection analytical technique * solid or liquid Raman analytical technique * integrated component of a medical instrument * individual light source "