The seasonal variation characteristics of the water quality of the Jinpen Reservoir and the impacts of rainfall runoff on the reservoir were investigated. Water quality monitoring results indicated that, during the st...The seasonal variation characteristics of the water quality of the Jinpen Reservoir and the impacts of rainfall runoff on the reservoir were investigated. Water quality monitoring results indicated that, during the stable stratification period, the maximum concentrations of total ni- trogen, total phosphorus, ammonia nitrogen, total organic carbon, iron ion, and manganese ion in the water at the reservoir bottom on September 6 reached 2.5 mg/L, 0.12 mg/L, 0.58 mg/L, 3.2 mg/L, 0.97 mg/L, and 0.32 rag/L, respectively. Only heavy storm runoff can affect the main reservoir and cause the water quality to seriously deteriorate. During heavy storms, the stratification of the reservoir was destroyed, and the reservoir water quality consequently deteriorated due to the high-turbidity particulate phosphorus and organic matter in runoff. The turbidity and concentrations of total phosphorus and total organic carbon in the main reservoir increased to 265 NTU, 0.224 mg/L, and 3.9 mg/L, respectively. Potential methods of dealing with the water problems in the Jinpen Reservoir are proposed. Both in stratification and in storm periods, the use of measures such as adjusting intake height, storing clean water, and releasing turbid flow can be helpful to safeguarding the quality of water supplied to the water treatment plants.展开更多
Based on the Veneziano ghost theory of QCD, we predict the cosmological constant A, which is related to energy density of cosmological vacuum by A = 3-8tG/pA. In the Veneziano ghost theory, the vacuum energy density P...Based on the Veneziano ghost theory of QCD, we predict the cosmological constant A, which is related to energy density of cosmological vacuum by A = 3-8tG/pA. In the Veneziano ghost theory, the vacuum energy density PA is expressed by absolute value of the product of quark vacuum condensate and quark current mass： PA = 2g/Hclmq（OI ： qq ： 10）l- We calculate the quark local vacuum condensates （01 ： qq ： 10） by solving Dyson Schwinger Equations for a fully dressed confining quark propagator S/（p） with an effective gluon propagator G^b（q）. The quark current mass mq is predicted by use of chiral perturbation theory. Our theoretical result of A, with the resulting （01 ： qq ： ]0} = -（235 MeV）3 and light quark current mass rnq = 3.29 6.15 MeV, is in a good agreement with the observable of the A =10-52 m-2 used widely in a great amount of literatures. Keywords cosmological constant A, Veneziano sate, quantum chromodynamics （QCD） ghost theory of QCD, local quark vacuum conden-展开更多
基金supported by the National Science and Technology Pillar Program(Grant No.2012BAC04B02)the National Natural Science Foundation of China(Grant No.51478378)
文摘The seasonal variation characteristics of the water quality of the Jinpen Reservoir and the impacts of rainfall runoff on the reservoir were investigated. Water quality monitoring results indicated that, during the stable stratification period, the maximum concentrations of total ni- trogen, total phosphorus, ammonia nitrogen, total organic carbon, iron ion, and manganese ion in the water at the reservoir bottom on September 6 reached 2.5 mg/L, 0.12 mg/L, 0.58 mg/L, 3.2 mg/L, 0.97 mg/L, and 0.32 rag/L, respectively. Only heavy storm runoff can affect the main reservoir and cause the water quality to seriously deteriorate. During heavy storms, the stratification of the reservoir was destroyed, and the reservoir water quality consequently deteriorated due to the high-turbidity particulate phosphorus and organic matter in runoff. The turbidity and concentrations of total phosphorus and total organic carbon in the main reservoir increased to 265 NTU, 0.224 mg/L, and 3.9 mg/L, respectively. Potential methods of dealing with the water problems in the Jinpen Reservoir are proposed. Both in stratification and in storm periods, the use of measures such as adjusting intake height, storing clean water, and releasing turbid flow can be helpful to safeguarding the quality of water supplied to the water treatment plants.
文摘Based on the Veneziano ghost theory of QCD, we predict the cosmological constant A, which is related to energy density of cosmological vacuum by A = 3-8tG/pA. In the Veneziano ghost theory, the vacuum energy density PA is expressed by absolute value of the product of quark vacuum condensate and quark current mass： PA = 2g/Hclmq（OI ： qq ： 10）l- We calculate the quark local vacuum condensates （01 ： qq ： 10） by solving Dyson Schwinger Equations for a fully dressed confining quark propagator S/（p） with an effective gluon propagator G^b（q）. The quark current mass mq is predicted by use of chiral perturbation theory. Our theoretical result of A, with the resulting （01 ： qq ： ]0} = -（235 MeV）3 and light quark current mass rnq = 3.29 6.15 MeV, is in a good agreement with the observable of the A =10-52 m-2 used widely in a great amount of literatures. Keywords cosmological constant A, Veneziano sate, quantum chromodynamics （QCD） ghost theory of QCD, local quark vacuum conden-
