Advanced Materials Research Vols. 482-484

Abstract: The sedimentation in the field of gravity provides a practicable and scientific principle for solid-liquid separation of ultra-fine particles. According to the fractal theory, a model of ultra-fine particles for gravity sedimentation was developed, considering the aggregation effects and particles interference, and the aggregation promoting coefficient was put forward. The fractal structure and FSD of aggregates were also analyzed. Furthermore, the comparison between theoretical and experimental values of ultra-fine particles sedimentation showed that the two results were more consistent with each other for the suspension concentration ranging from 1 wt% to 5 wt%.

Abstract: Based on detailed analysis of Bouguer gravity anomaly and magnetic anomaly by reduced to the pole, this paper uses correlation analysis method to analyze local gravity and magnetic anomalies of different filter scales, including filter scales of 50km, 90km, and 130km, and then discusses the contributing factors of local gravity and magnetic anomalies in eastern Tianshan. The results show that local gravity and magnetic anomalies are cogenetic anomalies in some areas, such as northeastern Santanghu, Shaqiuhe, southern Huangtuya, northern Dikan, and western Qijiaojing, and gravity and magnetic anomalies are allogenic anomalies in other areas. The study reveals that local gravity and magnetic anomalies are chiefly caused by Cenozoic – Mesozoic strata with lower density and weaker magnetism in northern Santanghu, and igneous rock with higher density and stronger magnetism in Shaqiuhe, and uplifting of older strata in northern Dikan, and Carboniferous strata with higher density and lower magnetism than its south and north areas in Qijiaojing. The study also reveals that local negative gravity and magnetic anomalies are chiefly caused by Cenozoic – Mesozoic strata with lower density and weaker magnetism, while local positive gravity and magnetic anomalies are mainly caused by Pre-Jurassic strata higher density and stronger magnetism in southern Huangtuya.

Abstract: In this paper, the modeling method of GCL 2nd order parallel resonance system is introduced, and the system simulation model is established with Matlab /Simulink dynamic simulation software. The voltage response curves at different losses could be displayed easily by changing the model parameters. The results indicate that, based on Simulink, it is efficient in system analysis.

Abstract: This paper based on the complex network, this paper expounds the advantages and disadvantages of traditional shortest path algorithm, this paper puts forward the traditional path finding algorithm of the improved algorithm, the improved algorithm is compared with the traditional algorithm between the search efficiency, and all the differences between the improved algorithm to solve complex network in size, number of nodes under the condition of the shortest path problem. The test shows that the improved algorithm efficiency in the later has obviously advantages, which are embodied in the space greatly reduce the complexity, the execution time also greatly reduced. But the individual the improved algorithm also has limitations. At last, this paper introduces the improved algorithm in yantai vocational college for the application of road map.

Abstract: An in situ field test with three indices of stability, sensitivity and accuracy on 12 soil moisture sensors was carried out in a sandy loam soil located in Lu’an at the subtropical monsoon climate region (China). The results showed that the majority of sensors were above 0.98 with a higher stability degree except for HT-DR-601(0.348) and DZN3 (0.661). Almost all sensors had a sensitive response to a certain amount of precipitation but Hydra Probe II was an exception. Trime-pico, SM300, ML2X, SWR6 and DH-FDR had a higher accuracy than 0.785, while DZN3 and HT-DR-601 were very lower. The mean differences of SM300, Trime-pico and Uni_SM were between -1% and 0, while HTSMS-02, DH-FDR, SWR6, ML2X, MP-4C and MP-323 were between -5% and -1%. DZN3 had the largest values of -17.8%. Finally, SM300, Trime-pico, ML2X, SWR6 and DH-FDR were got scores above 9 points while MP-323 and Uni_SM were above 8.4, showing an outstanding performance. The field performance study could provide some choices for the large-scale filed applications and the drought monitoring system.

Abstract: Due to the range of the measuring system is limited in the measurement of large aspheric optical elements, test is hard to be once fulfilled, so coordinate measurement based on multi-section stitching is proposed, and the least square mathematical model of large aperture optical elements multi-section stitching is built. Moreover, the profiler Talysurf PGI 1240 made by Taylor Hobson company is used for study. The result shows that, the method is suitable for multi-section data stitching for large aspheric optical elements, and possesses many advantages, such as fast speed, high accuracy and strong operability, etc.

Abstract: The energy shortage problem has become a very urgent issue in Chinese future development. The key to solve this issue is effective and rational utilization. This study exponds the way of thinking about comprehensive utilization, and describes some typical technology of comprehensive utilization of energy. It establishes the index system of comprehensive utilization of energy and sustainable development, and takes example for three areas of Hebei province to analysis and evaluation with the method of interval fuzzy number.

Abstract: The study is a practice of interdisciplinary method with the aim of introducing the basic idea of topology into the classification of marketing organization structure. Since the topological structure to a certain degree decides the marketing model of enterprises, the establishing of marketing strategy should be based on the topological analysis of marketing organization structure. The reason of introducing the topology classification is presented in the article and a number of typical topological graphs are expressed. The expected outcomes can be used extensively in various organizations in which marketing activities occur (not only profit organization but also nonprofit organization) and provide analysis framework for marketing organization structure and marketing strategy model establishing.

Abstract: This paper introduces a simple space vector PWM algorithm for a cascaded multilevel inverter. The scheme determines the location of the reference vector easily. It uses space state equation to get the value of vector. A cascaded thirteen-level inverter is used to explain the scheme. The scheme can be easily extended to n-level inverter. It is applicable to cascaded multilevel high voltage inverter and cascaded active compensation device. The result of simulation verifies that the scheme is useful in improving utilization of the direct current (dc) link voltage and reducing THD.

Abstract: This paper presents a new buffering layer(nickle oxide thin film) of organic solar cells. Nickle Oxide(NiO) thin film is a good alternative of hole tansporting layer. We investigates the film from physical and electrical aspects, such as morphology, deposition temperature, thickness etc. We find that the optimum fabrication conditions are: room temperature deposition, 10nm of thickness, and 30% oxygen proportion. The device strcture is Anode/NiO/P3HT[regioregular of poly(3-hexylthiophene)]: PCBM[(6,6)-phenyl C61 butyric acid methyl ester] /Al. And the best power conversion efficiency of device we got with NiO buffering layer is 2.49%, which is hundred times of ones without NiO buffering layer.