The relationship in the Section Sitopsis i s consistent with the former investigation. Ae. mutica had a relatively clos e relationship with the species of the Section Comopyrum.Ae. uniaristata had a far relationship with the other two species of the Section Comopyrum,indicati ng that it should be excluded from this section. Ae. caudata and Ae. umbel lulata had a close relationship.

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This is not surprising, given the closer proximity of Pengyang to the Asian inland dust sources; The average content of calcium carbonateis of Pengyang section is not only higher than that of central loess plateau, but also higher the west of Chinese Loess Plateau, which reflected Pengyang loess had been deposited by near Liupanshan\'s substances that contained more calcium carbonateis; The content of diffluent element of 10m depth in the section increased fast, which indicated that the modern eluviation and the leaching depth of loess may be stronger than our guess; The soil growth index can reflect the intensity of soil forming and the climatic changes; The "abrupt chang" of glacial and interglacial period was caused by strong soil-forming processes that enlarged the discrepancy of granularity between loess and paleosol. However, the magnetic susceptibility nearly cannot reflect the existence of S_8 and the magnetic susceptibility of S_7 is highest in the whole section, which is inconsistent with other studies that S_5 has the highest magnetic susceptibility.Thin-section examination shows that the micro-texture of the soil layers is divided into both cementing texture in S_7, S_5 and S_1, and granular texture in all others.

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This thesis is composed of four sections. Section 1 gives an overview of theories about elderly security. It involves the demand of the aged, the concept, content, influential factors of family elderly support, the concept, content, type, model and economic effect of public pension, theories searched from the study of Chinese elderly security. Section 2 introduces the history of family elderly support, analyses the reasons of the existence of it, expatiates on the factors that weaken the function of it, such as modernization of agriculture, population aging, family miniaturization, urbanization etc. section 3 introduces the history of the social old-age insurance in Chinese rural areas, analyses its impendency from the aspects of social stabilization, the rights and interests of the peasants, rural employment. Section 4 is the most important part of the thesis. It first refers to foreign practical experiences on rural elderly security, then demonstrates the elderly support at home which combines family elderly support and social elderly support, especially analyses the public pension.

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It consists of four teaching sections: the section of Marxism, the section of Orientalization of Marxism, the section of Compendium of China Modern History and the section of Moral Cultivation and the Fundamentals of Law.

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In 29 cases, infiltrated regien tissue, scar-like collagen, surrounding soft tissue, envelope or vessel: frozen section to paraffin section 86.2%/96.6%, 100%/100%, 37.9%/41.4%, 13.8%/41.4% and 0.0%/10.3%, respectively. Referenced criteria line of psammoma bodies, necrosis and cells heteromorphism appeared in frozen section and paraffin section 62.1%/58.6%, 13.8%/10.3% and 37.9%/24.1% respectively.

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the study aims at the actual network status of one work section in daqing oil field,makes a network analysis and planning for the new mixed model of this work section,expends wireless network for the work section on the basis of existing network,and conjoins wire and wireless network together to form an integrated oil field information transfer system.at the same time,using opnet modeler simulation flat roof to structure simulation models (network models,node models and a process model),and analyzing the functions and work mechanism of the major modules for related models,making a simulation for the structured network models,then according to the different parameters,analyzing the individual statistics comparatively such as delay,data dropped and so on,the effects of data packet,data rate and fragmentation threshold to the network performance are gained.after all these,the best structure network scheme for this improved section is determined.

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There are three stages of making the digital section histogram, including the process of neatening the original section data, prophase preparing of making the section histogram, making the section histogram.

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3D mathematical description and simulation about Complex geological body containing faults has still been researched in the groping phase. According to boring drill core data, section data formed by explanation to seismic section, correlative data obtained by territorial geologic investigation, based on 2D or 3D section, forming rational fault section, then building TIN model of geological body. These are the main technical itinerary.

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