A new type regulating valve with the cooling mode of constant temperature difference water supply, temperature difference self operated regulating valve, was introduced into blast furnace cooling system to overcome s...A new type regulating valve with the cooling mode of constant temperature difference water supply, temperature difference self operated regulating valve, was introduced into blast furnace cooling system to overcome shortcomings of the cooling mode of constant flow rate water supply. The results show that the temperature difference between inlet and outlet water of cooling wall can be decreased greatly and steadily, and the water supply for blast furnace cooling can be reduced considerably.展开更多
This paper reports a field testing of full scale PCC (Pulverized Coal Combustion) boiler study into the influence of constricted air distribution on NO x emissions at unit 3 (125 MW power units, 420 t/h boiler) of Gui...This paper reports a field testing of full scale PCC (Pulverized Coal Combustion) boiler study into the influence of constricted air distribution on NO x emissions at unit 3 (125 MW power units, 420 t/h boiler) of Guixi power station, Jiangxi and puts forward the methods to decrease NO x emissions and the principle of boiler operation and regulation through analyzing NO x emissions state under real running condition. Based on boiler constricted air distribution, the experiment mainly tested the influence of primary air, excessive air, boiler load and milling sets (tertiary air) on NO x emissions and found its influence characteristics. A degraded bituminous coal is simply adopted to avoid the test results from other factors.展开更多
Objective:The programmed death process of cells according to gene coding belongs to apoptotic natural extinction(PCD).The purpose of this study is to explore the phenomenon of“returning to old age and rejuvenating ch...Objective:The programmed death process of cells according to gene coding belongs to apoptotic natural extinction(PCD).The purpose of this study is to explore the phenomenon of“returning to old age and rejuvenating children”in the extreme anoxia,no nutrients and survival in the extreme environment of fish and earthworm.Methods:the adult earthworms were put into the sealed quartz sand or fine yellow sand plastic bottle with humidity of 35-40%70 ml and poured out 100-150 d,then put back into the natural environment(simulated natural plastic basin)and raised 100-150 d,to collect the experimental information.The same object can be observed repeatedly.Results:The earthworms which were closed in the little oxygen-free and nutrition-deficient vials were reduced by autophagy,and the rings and reproductive pores disappeared completely.When they were put back into the natural environment for two or three months,they were all restored to their original morphological structure.Conclusion:Most of the same subjects underwent 1-3 years of cyclic observation.The biological structure was adapted to the changing environment.It was helped by the resonance of many biota and complex stress factors.展开更多
The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to inves...The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to investigate on the decision-making mechanism of money supply and money regulation project. It suggests the regulation process which central bank controls with instruments of the monetary policy and the mode detail of its operation.展开更多
文摘A new type regulating valve with the cooling mode of constant temperature difference water supply, temperature difference self operated regulating valve, was introduced into blast furnace cooling system to overcome shortcomings of the cooling mode of constant flow rate water supply. The results show that the temperature difference between inlet and outlet water of cooling wall can be decreased greatly and steadily, and the water supply for blast furnace cooling can be reduced considerably.
文摘This paper reports a field testing of full scale PCC (Pulverized Coal Combustion) boiler study into the influence of constricted air distribution on NO x emissions at unit 3 (125 MW power units, 420 t/h boiler) of Guixi power station, Jiangxi and puts forward the methods to decrease NO x emissions and the principle of boiler operation and regulation through analyzing NO x emissions state under real running condition. Based on boiler constricted air distribution, the experiment mainly tested the influence of primary air, excessive air, boiler load and milling sets (tertiary air) on NO x emissions and found its influence characteristics. A degraded bituminous coal is simply adopted to avoid the test results from other factors.
文摘Objective:The programmed death process of cells according to gene coding belongs to apoptotic natural extinction(PCD).The purpose of this study is to explore the phenomenon of“returning to old age and rejuvenating children”in the extreme anoxia,no nutrients and survival in the extreme environment of fish and earthworm.Methods:the adult earthworms were put into the sealed quartz sand or fine yellow sand plastic bottle with humidity of 35-40%70 ml and poured out 100-150 d,then put back into the natural environment(simulated natural plastic basin)and raised 100-150 d,to collect the experimental information.The same object can be observed repeatedly.Results:The earthworms which were closed in the little oxygen-free and nutrition-deficient vials were reduced by autophagy,and the rings and reproductive pores disappeared completely.When they were put back into the natural environment for two or three months,they were all restored to their original morphological structure.Conclusion:Most of the same subjects underwent 1-3 years of cyclic observation.The biological structure was adapted to the changing environment.It was helped by the resonance of many biota and complex stress factors.
基金This work is supported by National Natural Science Foundation of China (No.70 12 10 0 1)
文摘The article adopts the quarterly data of the monetary and macroeconomics variables from 1978～1999, applies the asymmetrical information game analysis, the regression and cointegration error-correction model, to investigate on the decision-making mechanism of money supply and money regulation project. It suggests the regulation process which central bank controls with instruments of the monetary policy and the mode detail of its operation.
