No abstract

No abstract

Since the reform and opening to the world, the development of science and technology has made great progress. A large amount of scientific and technological resources has been accumulated in China, the storage forms of which can be divided into two categories: structured data and unstructured data. SOLR playing an important role in this field is a means for us to obtain information and data fast and precisely. In this paper, we import the stored data to SOLR, and establish the index of relevant content. Then the retrieval results data could be presented quickly on the basis of index.

The reduction of manganese(II1) porphyrins by hydrazine (L) was investigated by stopped-flow techniques. The mechanism of the reaction has been proposed based on the experimental results; the relationship between pseudo-first-order rate constants with the concentration of L. Calculated activation parameters showed that the pre-equilibrium step was exothermic and the reduction step endothermic. Substituent effects in the phenyl rings on the two steps have been examined.

By using the method of emergy analysis, this paper analyzed agricultural industrial structure and the emergy input, output and emergy index of agricultural ecosystem in Shouguang City from 2007 to 2016, which reflected the development trend of agricultural ecosystem. The results showed that the total emergy input of agricultural ecosystem in Shouguang City from 2007 to 2016 was in a downward trend, and the change trend of total emergy output was in a downward and then upward trend. From the emergy index, the economic input of agricultural ecosystem in Shouguang City was large, the environmental utilization was not sufficient, but the pressure on the environment was small, and the agricultural ecosystem in Shouguang City was in a sustainable state Continuous development status.