Applied Mechanics and Materials Vols. 651-653

Abstract: To investigate the plankton and water quality of Qiantang river, plankton of 12 sampling sites of the study area were monitored in summer 2013. Results revealed that 65 genera of phytoplankton including 37 bio-indicators of pollution and 21 genera of zooplankton were observed. Diversity analysis showed that Shannon-Wiener indexes of phytoplankton and zooplankton were at 1.44 to 2.56 and 1.61 to 2.61, plankton biodiversity integrated index were at 0.419 to 0.558, and water quality integrated index were at 0.303 to 1.43. Data analysis suggested that the water quality of Qiantang river could be sorted from α type to β type of moderate pollution, the pollution degree could be sorted from moderate pollution to slight pollution. The evaluation results by using plankton and physicochemical indexes were consistent.

Abstract: The exploitation potential evaluation of reserved land resources suitable for cultivation is a scientific basis to conduct the land development and consolidation. Combining with the actual situation of Wuhua county of Guangdong province, based on the suitable evaluation for cultivation, this paper selects five evaluation factors from the perspective of project implementation such as the terrain slope, the road density, the irrigation condition of surrounding farmland, the nearest distance to farmland and the map spot area of the nearest farmland to build the evaluation index system, and evaluate the exploitation potential of the reserved land resources. According to the area of supplementary cultivated land and the grading unit of the administrative village, the exploitation potential of the reserved land resources in Wuhua is divided into three partitions. The evaluation results show that the exploitation potential of Wuhua county is 731 hectares under the productivity level of present and foreseeable period, including other grassland, inland beach and bare land, mainly distributed in the basin and river valley of midland. The potential grading results show that the potential area of gradeIis 586.54 hectares, which terrain is flat and given the first priority to exploitation; the potential area of gradeIIis 128.84 hectares, which distribution is scattered and is given the second priority to exploitation; the potential area of grade III is 15.62 hectares, which mainly distributed in mountainous region and could be alternative to exploitation. The research results can provide a reference for development and arrangement planning of reserve land resources in Wuhua county.

Abstract: This study analyzed the characteristics and the main composition of college wastewater and designed the test method of wastewater treatment accordingly. The application of hydrolysis acidification - biological contact oxidation process can improve the treatment effect of college wastewater. This study also carried out the correlation analysis of the treatment results and investigated the main influence factors, which can be controlled to get better treatment effect.

Abstract: This paper analyzed the ecological characteristics of phytoplankton and the environmental factors in Caohai Lake in Guizhou karst area in 1983. Results showed that the growth and reproduction of Bacillariophyta, as well as the phytoplankton structure succession were determined by silicon (Si). The phytoplankton succession was slow, and the response of Bacillariophyta to silicon content was insensive. On the whole, the silicon content in Caohai Lake was determined by precipitation, and the succession of phytoplankton was determined by Si in Lake waters.

Abstract: This paper analyzed the content and distribution of Pb in surface waters in Jiaozhou Bay in 1982. Results showed that Pb content in April, June, July and October ranged from 0.49-3.25μg.L^-1, 0.45-3.35μg.L^-1, 0.30-2.67μg.L^-1 and 0.33-0.67μg.L^-1, respectively, complied with Grade I (1.00μg.L^-1) or Grade II (5.00μg.L^-1) in Sea water quality standard (GB 3097-1997) of China. As a whole, Jiaozhou Bay waters in 1982 was very lightly polluted by Pb. Non-point source was the major source of Pb in this bay, including atmosphere deposition, ocean current from the offshore, and the transportation of the head of the islands. The content, distribution and source of Pb showed significant seasonal variations, and different pollution prevention and control measurements should be took in different seasons.

Abstract: Maximum entropy (Maxent) modeling was used to predict the potential climate habitat distribution of Chinese hybrid poplar (clone I-63, I-69 and I-72). Occurrence data were collected from literatures. The Maxent model performed better than random with an average cross-validated AUC value of 0.96. Under the three future climate scenarios (emission scenarios A1B, A2 and B1), the geographic distribution of suitable habitat would shift from southwest to northeast, the suitable habitat area of scenario A1B increased most compared to other two, the ranking of the loss habitat area was scenario B1 > scenario A2 > scenario A1B, and the gain habitat area was scenario A1B > scenario A2 > scenario B1. The results of this work could be used as scientific basis for adapting and mitigating Chinese hybrid poplar planting to a climate change.

Abstract: The development situation of foreign army and our shipboard artillery ammunition demolition and the ways of waste ammunition destruction are summed up in this paper. The development direction of shipboard artillery ammunition demolition is put forward in this paper. Expenditure and science technology level and produced pollutants must be considered in the process of destruction. The destruction work of shipboard artillery ammunition should be developed with a more safe and orderly, more cost-effective and more saving direction.

Abstract: With the rapid development of the air transport industry, more attention is paid to interior ergonomics analysis which directly affects the time and cost spent during design. To provide a quick and human-in-loop accessibility way to evaluate accessibility in aircraft cabin, a new method based on virtual reality is proposed. In this method, the digital mock-up model is converted to other format which is need to build a virtual environment first, then virtual environment is built and a virtual hand is driven through tracking hand’s position by A.R.T(Advanced Realtime Tracking ) system to carry on accessibility evaluation in the virtual environment. Based on above-mentioned method the aircraft cabin accessibility evaluation system is designed and realized, which is verified by one case of a certain aircraft cabin. The result shows this method is simple and useful, offering a new way for accessibility evaluation in aircraft cabin.

Abstract: In order to realize the real-time monitoring of crop growth environment, this paper applied the Java JDK 6 + Eclipse 3.5, developed agricultural remote data collection system based on zigbee, greenhouse planting of crops growth environment parameters, such as air temperature, humidity and so on, with all kinds of sensor dynamic collection, and transmitted to the user through the network client terminal. This makes agricultural personnel through the terminal computer real time control of the growth environment of crops, can take timely control measures, has realized the remote, multiobjective agricultural information, the parameters of the real-time acquisition, display, storage, query, statistics, and other functions, provides a effective way for the agricultural informatization construction.

Abstract: China has a huge outdoor clothing market potential, and the outdoor clothing industry is in a flourishing period, whose future trends will be the focus of the industry. But domestic outdoor clothing industry is in its infancy stage, and its development is affected by many factors, such as technology, design, development, brand promotion and so on. Therefore, in order to meet the requirements of consumer and markets, this paper attempts to further analysis the development of outdoor clothing problems that exist in the Northeast region from the perspective of the development of the outdoor clothing in northeastern region.