Using the sedimentary structures and paleo-biotic features obtained from the drilling core to analyze the characteristics of sedimentary facies and reservoir of Chang 81 member in study area;using nuclear magnetic resonance,high pressure Hg injection,scan electron microscope,casting lamella and other methods to analyze the characteristics of chang 81 reservoir.The investigation finds the chang 81 member of the Pengyang-Jingchuan Area mainly developed the braided river delta frontal subfacies,and the delta plain facies only developed in the southwest of study area,and the four underwater distributary channels are almost distributed from NE to SW,the channel sand dominated the advantage space.The Chang 81 member sandstone are mainly gray,green-grayish lithic feldspathic sandstone and feldspar lithic sandstone,the intergranular pore and dissolved hole are main pore space of Chang 81 reservoir,and the pore type are mainly meso-and macroporosities,intergranular pore throat types are mainly micro throat and micro fine throa pore throat.The reservoir rocks are now in stage A of late diagenesis.Due to the compaction and presolution,cementation,the decrease of the primary sandstone porosity of each diagenesis are 23.8%and 27.35%;because of dissolution,the rate of face porosity slightly increased is 1.23%.After the research,it is believed that deposition and diagenesis are the main factors influencing physical properties in study area.
Cambrian Explosionis one of the most important events in the history of biological evolution,unparalleled diverse fossil fauna appeared abruptly in an interval not more than 20 million years at the beginning of the Cambrian.This event laid the foundation for the evolution of Phanerozoic organisms.It is generally accepted that the soft-bodied Ediacara biota is afailedexperiment at the evolution of life,and there is no clear genetic relationship with the Phanerozoic organisms.Based on a comprehensive review of Neoproterozoic tubular fossil records,especialy on a more systematic identification and morphological restoration of a large number of tubular animal fossils in the Gaojiashan biota such as Cloudina,Sinotubulites,Conotubus,Gaojiashania,Shaanxilithes,and possibly Anabarites.It is proposed that in the Ediacaran Period,corresponding to the evolution of the typical Ediacaran soft-bodied biota,there was a large radiation of tubular animals in the evolutionary history of early lifes at the end of late Neoproterozoic.They are complex in morpho-types,diverse in bodyplans,varied in sizes and lifestyles,representing a major biological innovation in Earth′s life,some of which have been pioneers of the Cambrian Evolutionary Fauna.In this paper,the biodivercification event is called theTubular animal radiation,which opens the prologue of the evolution of Phanerozoic life.
By analyzing the thin sections and physical property,the petrology feature and pore characteristics of the Chang 8 Formation in the Jiyuan Area,the microscopic reservoir pore structure characteristics,characteristics of porosity and permeability are studied and the reservoir performance′s main influencing factors were analyzed.The results suggest that delta sediments are the main deposits in the Chang 7 Formation,and delta front underwater distributary channel sand is the main reservoir.The lithological characteristics mainly include fine-grained lithic feldspathic sandstone and feldspathic detritus sandstone,with low compositional maturity and middle textural maturity.Granular pore and secondary feldspar-dissolution pore are the main pore types.Pore throat presents fine pore fine throat with poor sorting and high micro-heterogeneity.The Chang 7 reservior has low permeability of which the porosity is below 9.448%and the permeability is less than 0.685×10-3μm 2.The reservoir characteristics are influenced by deposition and diagenesis primarily.Sedimentary facies zone controlled development and distribution of reservoir.Besides,compaction and cementation lead to porosity decreased,but the dissolution improves the reservoir propert.
Based on the study of peripheral paleo-continental characteristics,heavy mineral characteristics and enrichment regularity of rare earth elements around the provenance area of He 8 period of the Permian in Ordos Basin,the sedimentary characteristics of different sedimentary environments in the sedimentary area are analyzed,and the sand control mechanisms of different types of source-to-sink systems are summarized.The study suggests that the north part of Ordos Basin is the main source direction,while the southwest and southern parts of Ordos Basin have less influence on provenances,controlling control different types of sedimentary facies belts and sedimentary characteristics respectively.Different types of sedimentary facies control different development characteristics of sand bodies and different superimposed styles of sand bodies,in which the alluvial fan is the superimposed giant sand body by multiple thick cycles of gravel,fluvial facies is the superposed large sand body of medium thick cycles of coarser clastic,and flood plain is the superimposed medium sand body of multiple medium cycles of fine clastic.The theory of source-to-sink system not only provides a theoretical basis for different sedimentary environments,but also provides a theoretical basis for spatio-temporal coupling sand control mechanism of superimposed styles of different types of sloping sand bodies.
In order to further enhance the total nitrogen( TN) removal efficiency of biological treatment process for ABS resin wastewater,the equipment of the original anoxic zone was improved and optimized. Aiming at the problems of the original process that the high DO value of the anoxic zone and the poor TN removal rate,an experimental scheme placing two hydraulic circulation agitators and adding external carbon substance was designed. The paper analyzed comparatively on the TN removal efficiency under the three conditions of aerating by microporous diffusers,cycling vertically by hydraulic circulation agitators and adding external carbon substance. The results indicated that when using microporous diffusers in the anoxic zone,the removal efficiency of TN was poor in the system with an average of 19. 80% TN removal rate; when placing hydraulic circulation agitators in the anoxic zone,the removal efficiency of TN had been improved with an average of41. 73%; when adding external carbon substance into the raw water,the removal efficiency of TN had not been improved significantly,while the chemical oxygen demand( COD) removal efficiency decreased.
Using the endomorphism of Hyperring,the notions of f derivations of hyperring is introduced,which extends derivations. And some related properties are investigated. It also proves that for a strongly f differential hyperring( R,d) and for any strongly f differential hyperideal I of( R,d),the factor hyperring( R / I,g) is also a strongly f differential hyperring. Then it is proved that a map d is a f derivation of a hyperring R if and only if the induced map Фd is a homomorphism,where Фd is induced by d.
Using the industrial economics and statistical methods,this paper analyses the relation of the indus- try agglomeration and the park economic development. And it finds out there is a positive correlation between the level of industry agglomeration and the contribution rate of industrial added value of the park,which means that industry agglomeration will affect the development of the park economic development.
The problem of Lead pollution source identification in soils is studied by an analytical method.Based on the fingerprint property of Lead isotope,a conceptual Lead isotope model is established and the ideal application condition for a multivariate mixed model of Lead isotope is analyzed. This paper focuses on modeling the mass balance model of Lead isotope and the quadratic programming model of Lead isotope ratios,and discussing the characteristics and application range of these models. The lead isotopic composition and density in the soils,the samples of mixed ore of Lead and Zinc smelters,coal of power plants and mixed coal of coking plants around an industrial park of the Midwestern Shaanxi are measured. By using these data to the mass balance model and the quadratic programming model,the relationship between the Lead pollution in the industrial park soil and the contribution of each pollution source are obtained. This study shows that the soil lead pollution around the industrial park of the Midwestern Shaanxi is mainly from the Lead emissions,diffusion and superimposition of the power plants,the coking plants and the Lead and Zinc plants,where the pollution contribution rate of the power plants and the coking plants are relatively large. Finally,the developmenttrend of the analytical methods for soil Lead pollution sources is mentioned.
By the means of literature,statistical graphics,statistics and systems analysis methods,the paper accurately analyzes and grasps the current situation of Chinau0027 s shale gas industry development and problems,to propel the sound development of shale gas industry in China. According to the analysis of shale gas resources in China,the national industrial policies and industrial development in recent years,it is indicated that: China has great shale gas development potential and has already made some progress,but the prominent issues such as resources exploration,mineral rights management,government regulations,and market environment are still key factors restricting industry development. Therefore,it is recommended to promote the comprehensive management system innovation based on mineral rights,environmental protection,market condition,and to design top-level strategy and policy for shale gas industry as soon as possible.
The purpose of this paper is to design a rotational inverted pendulum control method that can adapt to the changing of environment. In order to improve the environment adaptive ability of this system,this paper uses PID algorithm as the core control algorithm and adds double closed loop position feedback. This method enpowers the system strong adaptability to environment,smaller steady-state error and faster dynamic response. The control method proposed in this paper has good guidance for practical production of inverted pendulum.
To study the neural network model to forecast floods,requires the model to ensure a certain operating efficiency and accuracy. In this paper,parallel extreme learning machine is used to establish flood forecasting models. A flood forecasting model is established,which is in the application level,and can be used to forecast flood of Weihe River and Hanjiang River. Parallel extreme learning machine has the advantages both of extreme learning machine and parallel computing,no iterative adjustment of hidden nodes is necessary,it can predict by post-training; it is of high efficiency,better forecasting,and has a certain practical value.
Urban agriculture planning has also become an important part of urban sustainable development planning system. Based on connotation and characteristics of urban agriculture,the paper analyses the attributes and puts forward the basic principle of urban agriculture planning. Moreover,taking planning of Xi' an Urban Agriculture Demostration Park in the northern slope of Qinling Mountain as case,what have been explored include planning content,method of function orientation,industrial development,spatial layout,and construction of service system in urban agriculture planning. At last,the prospects of China' s urban agriculture planning in the future are discussed.
The goal of this thesis is research to ecological landscape design of Xi' an International Exposition Park,which emphasized on concept,culture,ecology and recreation,and construct interactive,open,flexible,rich and colorful design ways and strategies. The dissertation uses reference of documents,case study and many investigation and survey,then analyses the system of ecological landscape design of Xi' an International Exposition Park. The study of objects,ways and results of ecological landscape design of Xi' an International Exposition Park,finds this design could have capacity of connecting nature with culture,nature with entertainment,and culture with entertainment,then create a new and ecological landscape pattern of urban park. The ecological landscape design of Xi'an International Exposition Park focuses on the process of nature and ecological sustainability,the scheme,which provides inclusivity and flexibility,would bridge the gap between landscape and architecture.
Studying on the life table and spectral analysis of Cyclobalanopsis chungii,Cyclobalanopsis elevaticostata and Cyclobalanopsis chungii population in Mangdangshan Nature Reserve in Nanping. The curves of survival,mortality rate,the static life table,the killing power and hazard rate were analyzed. The result from the life table indicated that the whole life cycle of dynamics of Cyclobalanopsis chungii and Cyclobalanopsis chungii population were similar,and had the characteristics of pre-fluctuation and late stability. Due to the different growth cycle,the Cyclobalanopsis population had the characteristics of pre-stability and late fluctuation.
To observe the effect of Phellinus ignairius mycelia on the growth of H22 solid tumor bearing mice,to investigate the antitumor effect of this product. Using a mouse xenograft model,the mice were randomly divided into 5 groups: tumor control group,cyclophosphamide group,Phellinus mycelium of 6. 0g / kg,3. 0g /kg,1. 5g / ㎏ dose group. By oral administration to mice bearing tumor for 10 days,their weight was measured.The average inhibition rates of 6. 0,3. 0,1. 5g / kg dose on H22 solid tumor bearing mice were 43. 6%,36%,26%. The results showed that for the 6. 0,3. 0g / kg dose group,3 batch test on H22 solid tumor bearing mice,the average inhibition rate reached more than 30%,and well repeatability,which showed that Phellinus ignairius mycelia had obvious anti-tumor effect.
Since compressive sampling of block-based compressed sensing( BCS) lacks global features,conventional fusion by BCS results in lower quality with blocking artifacts. Firstly the non-uniform BCS sampling of input images in the wavelet-transform domain is presented,and then these compressive samplings are fused by the rule of local-features. Finally,the fused image is reconstructed by iterative thresholding projection( ITP) algorithm with the consideration of blocking artifacts. A fusion method with wavelet-based non-uniform BCS sampling( WNBCS) is proposed for remote-sensing images,while the detailed implementation flows are given. Numerical experiment shows that ITP reconstruction with WNBCS can produce better recovery with low computational cost. Field test indicates that,image fused by the proposed method achieves better subjective visualization and quantitative analysis than those with rules of maximum-absolute-value and linear weighting.The proposed method simplifies the process of fusion decision with consideration of global features,which is advantage for the fusion of big images of remote sensing.
This paper surveyed the recent literature about the Horizontal Merger Antitrust Regulation and reviewed the empirical research methods and conclusions. Methods employed in antitrust enforcement to measure anti- competitive effects of horizontal merger cases have become more sophisticated,which is attributed to the continuous development of empirical research based on market structural assessment and merger simulation.China u0027s antitrust control of mergers rarely analyzes unilateral effects and coordinated effects of merger cases but relies heavily on the review of market structure. There is an urgent need to learn new theories and new methods from foreign countriesu0027 antitrust practice.
A preliminary study of optimizing the skin lamination on the straight section of the fuselage has be done when only the airtight loads is considered. Combined the finite element software NASTRAN solver and the genetic algorithm to achieve the specific process by ISIGHT software,and to make up for deficiencies by ISIGHT C + + programming. Under airtight loading,analysis obtained the best lamination sequence,ply angles and layers of the fuselage skin. Contrast the before and after the optimization of composite fuselage,the equivalent section of the fuselage to reduce the 16. 2% of the body weight of the structure; contrast to the metal air-frame of A320-200,corresponding fuselage sections reduced 26. 5%,improving the structural efficiency.The calculation method can be automated to improve the computational efficiency. This method can achieve the initial read,automated calculations and read the results of the whole process,and reduces the amount of computation time.
Lingchuan was dotted with villages which the scale ranged from the massive to the small during Qianlong period in Qing Dynasty. The main parts of them were small villages which were widely distributed in the county. Over 100 household village is not likely to be scattered all over the county but in the west of Lingchuan. 13 percent of large villages accounts for 44 percent population in Lingchuan. In addition,most of the villages and population was spread concentrately in the west of the it. It seems that tle population is more than10 in every family evenly,consequently,the composite family is the main type in Lingchuan. The villages' distribution and account scale are closely related to topography.
To establish a RP-HPLC method for simultaneously determining xanthotoxol,hydrate oxypeucedanin,byakangelicin,imperatorin and isoimperatorin in Tongqiao Biyan Tablets. The analysis was performed on Agilent TC-C18column( 4. 6 mm × 250 mm,5 μm),and the mobile phase consisted of acetonitrile-0. 2%formic acid with step gradient elution. The flow rate was 1 m L / min and detection wavelengths was set at 254 nm. The samples showed a good relationship in the ranges of 0. 163 ~ 5. 216 μg / m L for xanthotoxol( r2=0. 999 8),0. 699 ~ 22. 356 μg / m L for hydrate oxypeucedanin( r2= 0. 999 5),0. 375 ~ 11. 988 μg / m L for byakangelicin( r2= 0. 999 8),1. 617 ~ 51. 744 μg / m L for imperatorin( r2= 0. 999 3) and 0. 869 ~ 27. 784μg /m L for isoimperatorin( r2= 0. 999 8). All of the average recoveries were more than 95%. The method is accurate,reliable and reproducible and can be used for quality control of Tongqiao Biyan Tablets.
