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To evaluate and select the mode for the EPC project consortium, and to solve the problems of multiple evaluation indicators and insufficient evaluation, on the basis of the analysis on the consortium mode, from the perspective of helping the owner to control the EPC project, six first-level evaluation index systems are built and the evaluation methods based on the TOPSIS method, the gray relational degree, and the combination of the two are employed to evaluate and select the consortium mode for large as well as small and medium EPC projects. The analysis and evaluation results show that, for large EPC projects, the results of the three methods are consistent. The tight consortium led by the design party is the best choice, followed by the partnership led by the design party. For small and medium EPC projects, the results are consistent with the large-scale EPC projects when the TOPSIS method and the combined evaluation method are used. But there are differences in the ranking results when the grey relational degree is used to evaluate. By introducing different evaluation methods and selecting appropriate preference coefficients, it can help the owner to make a more rational judgment on the evaluation and selection of the EPC project consortium model. [ABSTRACT FROM AUTHOR]

The phase conjugation between the deformable mirror and the wavefront sensor in the aberration correction of a terawatt Ti:sapphire laser is studied experimentally and theoretically in this paper. At varying values of phaseconjugation precision, we focus the corresponding beams into spots of the same size of 5.1 µm × 5.3 µm with a f/4 parabola in the 32 TW/36 fs Ti:sapphire laser system. The results show that the precision of conjugation can induce an intensity modulation but does not significantly affect the wavefront correction. [ABSTRACT FROM AUTHOR]

The effect of strong shock resistant capacity of the combined process of PPC preoxidation and BAC filtration was investigated in the treatment of surface water. The compared experimental results show that the organics removal rate in coagulation process and filtration process is enhanced and the steady running period in filtration process is shortened, which suggests that the combined processes of PPC preoxidation and biological activated carbon filtration have higher strong shock resistant capacity for organic matters and ammonia variation. In the case that raw water is polluted seriously, adding aeration process before biofilter process is an easy and effective way to enhance the biological process for organics removal. [ABSTRACT FROM AUTHOR]

By comparing the effluent quantity and microbiological characteristics in each water treatment process and in BAC process, the effects of PPC and O3 preoxidation on BAC process were studied. The results show that the effluent quantity of biofiher with PPC preoxidation is better than that with ozone preoxidation. Compared with Nrtrosominas in O3-BAC, Nrtrosominas and Nitrosospira are the predominant nitrite bacteria in PPC-BAC process. Nitrobacter and Nitrospina are the predominant nitrate bacteria in both of BAC process. [ABSTRACT FROM AUTHOR]

The phase conjugation between the deformable mirror and the wavefront sensor in the aberration correction of a terawatt Ti:sapphire laser is studied experimentally and theoretically in this paper. At varying values of phaseconjugation precision, we focus the corresponding beams into spots of the same size of 5.1 µm × 5.3 µm with a f/4 parabola in the 32 TW/36 fs Ti:sapphire laser system. The results show that the precision of conjugation can induce an intensity modulation but does not significantly affect the wavefront correction. [ABSTRACT FROM AUTHOR]

Objective: To describe the clinical features of a big family with incompletely penetrated autosomal dominant hereditary spastic paraplegia (SPG) and perform the exclusion analysis of genetic loci., Methods: The clinical information of this SPG family was analyzed retrospectively. Exclusion analysis of the known autosomal dominant SPG loci was performed by using multiplex fluorescence PCR, capillary electrophoresis and Linkage package., Results: There were eleven affected members available in this SPG family and the age at onset ranged from 2 to 10 years. The first symptoms were a bilateral, symmetrical, progressive lower limb weakness and spasticity. Patients presented with spasticity and hyperreflexia, positive Babinski sign and scissors gait, and the upper limbs were involved more severely than the lower limbs. No urinary inconsistence, sensory impairment, nystagmus and dementia were found. Genetic analysis showed that this family was consistent with autosomal dominant inheritance. The linkage analysis and mutation analysis revealed this family was not linked to the known autosomal dominant loci., Conclusion: This SPG family had typical "pure" clinical symptoms. The age at onset was early and the signs in the upper limbs were more obvious than those in the lower limbs. The result of linkage analysis shows that this family represents a new SPG subtype.

Objective: To screen all ten genes between D15S971 and D15S1012 in five Chinese families with hereditary spastic paraplegia with thin corpus callosum (HSP-TCC)., Methods: DNA samples from 5 HSP-TCC families were screened for mutations in AK128197, MGC14798, HH114, MEIS2, MGC35118, SPRED1, AK128458, FLJ38426, RASGRP1 and AK093014 on chromosome 15q13-15 between microsatellites D15S971 and D15S1012 by polymerase chain reaction, direct sequencing and cosegreagation analysis., Results: No disease-causing mutations were found in the 10 genes, but 13 polymorphisms were identified in which two were novel., Conclusion: This study did not support the ten genes between D15S971 and D15S1012 were the disease-causing genes of the 5 HSP-TCC families.

The effect of PPC preoxidation on BAC process for organic pollutants removal was conducted by measuring the distribution of relative molecular mass, the concentrations of organic and inorganic matters on BAC. The results show that organic matters of relative molecular mass less than 3 x 10(3) is the main part of BDOC. Organic matters of relative molecular mass more than 10 x 10(3) is effectively removed in the process of coagulation with PPC preoxidation. On the other hand, organic matters of relative molecular mass less than 3 x 10(3) is increased with PPC preoxidation, which improves the biological activity of BAC process. The concentrations of organic and inorganic matters on BAC with PPC preoxidation are reduced 5.0 mg x g(-1) and 4.16 mg x g(-1) respectively than that on BAC alone, which reduces the block of hole on GAC and increases the life time of BAC process.