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Lu Z.,Nanjing Southeast University | Wang D.,Science and Technology Development Center
Advances in Civil Engineering and Building Materials - Selected Peer Reviewed Papers from 2012 2nd International Conference on Civil Engineering and Building Materials, CEBM 2012 | Year: 2012

As urban development and residents low-carbon living requirements, the green transportation occurs. The development of green transportation system should be under the guidance of green transportation development architecture. On the base of the international and domestic studies and practices, this paper firstly summarized the content of green transportation system and its development objectives, and then the framework of green transportation architecture was presented. Secondly, the evaluation index architecture of green transportation system was analyzed, and the specific estimation method for the selected evaluation index was given. Finally, based on the case study of the green transportation evaluation index values for different types of urban areas, the development emphasis of urban green transportation system of various types of urban areas were pointed out. The study is promising for providing a good guidance to the development of domestic urban green transportation system © 2013 Taylor & Francis Group, London. Source

Liu S.,Beijing Jiaotong University | Liu S.,Science and Technology Development Center | Lyu Y.,Beijing Jiaotong University | Zheng L.,Beijing Jiaotong University
Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University | Year: 2015

This paper started from the meaning and characteristics of the core competitiveness of online academic journals. Then it discussed the internal dynamic mechanism based on the level of human resource management, marketing and service ability, cooperative organization competence, and the external dynamic mechanism based on market environment, technology environment, social and cultural environment, and the innovation dynamic mechanism which was formed based on the internal and external power mechanism coordination. Based on this, different ways to improve the core competitiveness of online academic journals were posed, such as intelligence resources, resources integration, process optimization, continuous innovation. © 2015, Journal Northern Jiaotong University. All right reserved. Source

Huang J.,Nanjing Southeast University | Yan L.,Nanjing Southeast University | Cai W.,Nanjing Southeast University | Zhong Q.,Science and Technology Development Center | Wang S.,Nanjing Southeast University
Fresenius Environmental Bulletin | Year: 2013

Substrate enzyme plays an important role in the transformation and the degradation processes of nutrients in constructed wetlands. The spatial distribution of the substrate enzymes, including urease, dehydrogenase and phosphatase, was monitored systematically. Meanwhile, the spatial distribution of dissolved oxygen and the spatial degradation rule of nutrients were investigated. The relationship between the enzyme activities and wetland operation characteristics was analyzed. Results showed that there was a close relationship between the spatial distribution of dissolved oxygen, the spatial degradation regularity of nutrients, and the enzyme activities. The activity of urease, dehydrogenase and phosphatase in the upper layer of soil was generally higher than that in the lower layer. The distribution regularity of the urease activity was similar with that of dissolved oxygen. The activity of dehydrogenase and phosphatase declined gradually along the flow in the wetland. The urease activity influenced the nitrification intensity significantly, showing a remarkable positive correlation with the nitrification intensity in the wetland. The dehydrogenase activity had no significant correlation with the nutrient removal, but was associated with the accumulation of organic matters in the substrates. The phosphatase activity was closely related to degradation of organophosphorus. Source

He L.,Harbin Institute of Technology | Yuan J.,Harbin Institute of Technology | Zhang H.,Harbin Institute of Technology | Zhang H.,Construction Group of Heilongjiang Province | And 4 more authors.
Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | Year: 2013

To investigate the stability of the new full steel undersize-log formwork with early-removal substructure, 4-bay-5-row which were made up of the logs and steel tubes as a test unit were prepared to study the compressive failure test. The loading patterns and time which affected the substructure were considered, the supports force and deformation were analyzed, and the failure modes that were out-plane bucking and strength failure were observed in some members. The experimental results show that the pouring concrete actual speed should not too fast, and speeding up the turnover time of this formwork is available to reinstate the stress of this log. The members during pour concrete should be monitored. The structural measures and horizontal restraints of joints are absolutely essential, and the logs which are serious imperfection can obviously decrease the stability of the new formwork, so that attention should be paid to the weak parts of the installation location. Source

Fu B.-Q.,China Institute of Metrology | Zang C.,China Institute of Metrology | Song G.-W.,Science and Technology Development Center | Meng Y.-N.,Shanghai JiaoTong University | And 7 more authors.
Jiliang Xuebao/Acta Metrologica Sinica | Year: 2011

For 3 kinds of maize matrix reference materials with different genetically modified MON810 maize contents, a multi-laboratory verification for their Q-PCR values is organized. The uncertainties of the multi-laboratory values are evaluated. By weighted average, the Q-PCR values and uncertainties of A, B and C levels of the genetically modified MON810 maize matrix reference materials are 0.51% ± 0.10%, 1.1% ± 0.2%, 4.7% ± 0.7% (k=2), respectively. Source

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