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1.
It is difficult to treat landfill leachate in China.Traditional biologic method and physical method always have high expenses,or cann''t reach the discharge standards.The authors use a new biologic method to treat landfill leachate,which is the Wood_microbial System from Japan.The system to be digested by 3 aeration tanks and 1 reaction tank.The comparison combine processed wool_dust broken pieces with the certain grain degree size were throw in the tanks.Dirty and organic matter are in the digest tanks through the aeration reaction and aneration reaction repeatedly.In this experiment the speed of wastewater discharge and oxygen supply has been changed, and the change of biologic system and the effect of pollutant are removed. The optimal treatment condition can be found.The experiment shows that the system has a good result,special for nitrogenous.The BOD is average to do away with the rate to amount to 90%,almost reach the second class or third class for leachate standard.But BOD loading should be not beyond 4 kg/(m 3.d),othrwise,the system will not operate in normally. 相似文献
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Information integrating is the most important key to CIMS,which is the base of the function integrating and all others.Because of so many kinds,so complicated structure,so many different sources and uses that the information in CIMS has,it is necessary to build a popular Information Integrating Model. The model of information integrating in the thesis bases on the enterprise model,which is presented by ISO(International Organization for Standardization).According to the object-oriented method,the process of modeling begins with classifying the information,and then describes the definition of the attributes and the structural relation of those objects. By means of the idea of Encapsulation and Inheritance,the destination of information integrating can be arrive and the model of information integrating can be set up. The model which is based on the share information is helpful to finish the function integrating and the whole CIMS' construction. Moreover,the system which is developed following such program can be reused for many times and the developing circle of CIMS can be apparently shortened,too. 相似文献
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In the past, the criterion for calibration has almost invariably been the stellar oriented ballistic camera,the method is a point to point comparison on the identical coordinate system. Deficiencies is follows: The request of weather is severe(cloudless night); The period is often long; the measure equipment of high precision can't be calibrated. While EMBET methods is used in calibration, it does not need criterion and it demands only that the measure elements is larger than 3,and the trajectory and many system errors of the measure elements can be simultaneously calculated with the measure data sequences. The error models of related equipments' measure elements and the EMBET of typical equipment group are given. The EMBET method is successfully used in Accuracy-analysis of Satellite Launch. 相似文献
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Fingerprint classification can provide an important indexing mechanism in a fingerprint database. An accurate and consistent classification can greatly reduce fingerprint matching time for large database. In the paper, by combining genetic algorithm and neural network is presented a fingerprint classification algorithm which is able to achieve an accurate classification. By inputting the global feature represented by directional image to three layer neural network trained by genetic algorithm, the fingerprints were classified into six categories: whorl, right loop, left loop, arch, double loop and undiscerning type successfully. 相似文献
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According to a new trend of telerobot control, some key techniues are researched to solve the Internet telerobotics , such as distributed intelligent computation on the Internet, human-computer interface,and Internet-robot interface etc.The current development status of the Internet telerobotics is reviewed. Based on the new directions of the network software development, the authors discuss that the middleware technique CORBA plays an important role in solving the problems of the Internet telerobotics,and it is an effective way to use Java language to control the telerobot and improve its system performance. The application perspective of the Internet telerobotics is investigated.It is indicated that the development trend of the telerobot control is a human-centred collaboration mechanism of mutual reinforce and coordination in human-machine intelligent. 相似文献
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棉花产业是新疆生产建设兵团支柱性产业。棉种企业为新疆棉花优良品种推广,优质种子供给提供了重要保障,为新疆农业的长期发展发挥了重要作用。随着兵团深化团场改革,"五统一"政策的取消,棉种企业迎来了机遇和挑战,同时也面临着问题和思考。如何在新形势下提升种业品种创新能力、竞争能力、供种保障能力和依法治理能力建设,更好地服务于国家棉花产业,树立走出去发展理念是需要长期思考的问题。就新疆生产建设兵团棉种企业发展现状、存在的问题进行了分析,并提出相关建议,旨在为新疆生产建设兵团棉种企业健康发展提供参考。 相似文献
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种子质量监管是保障农业生产用种安全的重要手段,也是促进种业健康发展的核心环节。随着农业供给侧结构性改革对种植业结构的影响和《种子法》对种子监督管理的新规定,种子监管工作遇到了许多新问题。结合新形势下种子质量监管工作的要求,分析了当前种子质量监管工作中遇到的主要问题,并提出了相应的建议。 相似文献
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扦样是种子检验的第一步,是保证种子检验结果可信可靠的前提。为规范种子扦样,我国出台了相关文件与条款解释,然而"散装种子扦样"部分存在表述含糊笼统,甚至不一致的情况。为此,就散装种子扦样过程中的扦样单位划分、扦样点设置、扦样量确定和扦样器选择几个方面谈谈自己的思考,并提出了相应的建议。 相似文献