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Measurements of Some Baryonic Decays of Charmonia
With 58 million J/φand 14 millionφ(2S) events collected with the BESⅡdetector at the BEPC, branching fractions or upper limits on branching fractions for the baryonic decays J/φ→Λ(?)π~0, J/φ→Λ(?)η,φ(2S)→Λ(?)π~0,φ(2S)→Λ....
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The Theory and Method of the Super-large Type Network Simplification on Time-cost Tradeoff Problem
The research on time-cost tradeoff problem started from the early 1960s and the relative scope has expanded a lot in the following decades.However,no breakthrough has been made with regard to the solution of the problem.The main bottleneck i....
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Study on Deformation of Collapsed Loess in Metro Construction by Shielding
XiAn metro construction is first metro engineering in collapsed loess in the world, in that there are many questions to be solved such as "many studies,much difficulties, little parameters and no data ",which could be risk resource of metro....
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Studies on the Ecology Building Practice of the Shandong Jiaotong University Library
Ecological building reflects the enormous change of construction concepts and patterns,it representatives the direction of future building.But in our country,the study on it is still confined to theory, the consciousness ecological construct....
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Study on Excavation Disturbed Zone and Damage Zone in Surrounding Rock of Deeply Buried Long Tunnel b
The South to North Water Transfer Project is taken as the engineering background of this thesis and the excavation disturbed zone and damage zone,deformation characteristics, stress evolution law and rock mechanical behaviors in surrounding....
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The Safe and Stable Research of Forest Ecotype's Transporting of Monorail Vehicle
The forest is the largest ecological of the earth.How to develop the construction of the forest industry system while protecting forest environment better is the course which needs resolving ceaselessly by our forest engineering investigator....
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Application Research of VSC DC in Urban Power Grid
Due to the sustained rapid growth of city load and the continuous increasing demand for safe and reliable power supply,urban power supply with high quality and reliability is facing more and more difficulties and challenges.For the catastrop....
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Study on Hydrodynamic Performances of a Tidal Current Energy Conversion Device with Flexible Blade Tu
As renewable energy, the tidal current is becoming one of the research focuses at home and aboard. The resource of tidal current energy in china is rich, so its development potentiality is promising. As the conversion device, turbine is the....
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A Finite Element Model of Spatial Thin-walled Beams with Arbitrary Cross Section
Very similar to the case of ordinary beams,when stout thin-walled beams loaded by a lateral force,shear deformation is predominant in the whole traverse displacement and must be included in calculation.Otherwise a great error would be made.A....
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Study of Dynamic Properties for Buckling Restrained Brace and Application in the Steel Arch Structure
Buckling Restrained Brace (BRB) yield but not buckling under axial compression loads, performs good hysteretic properties and energy dissipation. Now it is applied to new buildings and reinforcement of existing buildings. However, all core t....
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Experimental Study and Numerical Analysis on Bearing Reaction and Bearing Capacity of Curved Prestres
In the dissertation,it is reviewed the theoretical research and application of curved prestressed concrete(PC) box girder bridge.As the drawbacks of pertinent disease characteristics and current research,studies on bearing forces and ultimat....
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Regional Electrical Power System Ultra-short-term Load Forecasting and Network Modeling Analysis
As socialist economy develops further,electric power demand in China is increasing.The transmission of electric power distinguishes strongly from that of other industries.Power energy can not be abundantly stocked,thus the electric power gen....
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Study on the Sustainable Utilization of Water Resources in Laoshan District, Qingdao City
Sustainable use of water resources is a new process under the framework of sustainable development, which can guarantee the sustainable development of society, economy and ecological environment. Also it can settle the crisis of water resour....
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Study on the Key Technology of Morass Permafrost Subgrade of Qinghai-Tibet Railway in Tanggula Mounta
After investigating the engineering geology in the north of Tanggula Mountain in Qinghai-Tibet Plateau,study on the key technology which is attributed to principle and engineering measure on stability of morass permafrost embankment is carri....
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Study on Stability for Low Embankment of Qinghai-Tibet Railway in Tanggula Mountain Permafrost Area
In order to satisfy requirements of design of longitudinal degree of slope and the joints of different structures,low-roadbed which is lower than critical height was applied in permafrost roadbed constructions in Tanggulashan Mount sector of....
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Study on the Crack in Permafrost Embankment of Qinghai-Tibet Railway
Constructions of roadbed in permafrost areas have changed the thermal distinction of original natural ground surface and the distinction of water-heat transportation within seasonal thawing layer of permafrost,as well as the water-heat envir....
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Study on Reduction Technology of NO_x Emitted and Sr Catalysts by Gasoline Engine
Normal vehicle exhaust includes HC, NO_x,CO, and PM etc. With the development of combustion technology, NO* becomes the main pollution source in modern city road. At present, three-way catalyst is widely used to purify vehicle exhaust. Howev....
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Theoretical and Experimental Study on Oxygen-enriched Combustion in Gasoline Engine
The crisis of petroleum,combined with the desire to reduce the pollutant effects of combustion have led to a finding ways to increase the efficiency,of the engine combustion process.Thus,the latest research by experts and institutions around....
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Research on the Nanometer Photo-catalytic Purification Effect and Modeling in the Analog Environment
The automobile has become“the second living space”for human being except that the house.The air quality inside automobile influences on drivers and passengers directly.The automobile cabin is so small that significant amount of air pollu....
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Research on the Effect of Gas Fuel on Combustion and Emission Characteristics of Internal Combustion
With increasing concerns on environment protection, the worldwide communities are bringing forward increasingly rigorous regulations for reducing toxic emissions from Internal Combustion Engines (ICE). As a result, improving fuel economy and....
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Preparation and Characterization of Intumescent Flame Retardant and Silane-crosslinked PP and Its EPD
Polypropylene(PP) and PP/ethylene propylene diene rubber(EPDM) have been widely used in many fields due to its outstanding comprehensive properties.However, their applications are restricted because of their flammable properties and less the....
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The Flow and Mixing Characteristics of Gas-Liquid Two Phases in Ejectors
During the chemical engineering processes such as hydrogenation, chlorination, sulfonation and tail-gas absorption, it is an important mode of production for the gas-liquid two phases to flow, mix and transfer mass. Ejectors have many advant....
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Stable & Clean Combustion of Pulverized Coal-Fired Boiler under All Loads Based on High Temperature A
Energy saving and pollution reducing are important measures to achieve sustainable development of the nationfil economy,especially for power industry.This article focuses on resolving three major issues of current pulverized coal fired boile....
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Durability Design and Assessment for RC Structures Based on Probability Theory
The reinforced concrete is the material widespread used in the field of civil engineering.In recent years,the durability failure of reinforced concrete structures has puzzled the experts and become a worldwide question.As the same with forei....
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Probabilistic Approaches to Network Expansion Planning of Power Systems with Wind Farms
In order to deal with the world-wide energy crisis,wind farms have been developed rapidly in recent years to generate electric power from renewable wind power.However,wind power is variable and intermittent and it therefore introduces an ext....
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Research of Transmission Line Aeolian Vibration Based on Dynamic Method
Transmission line aeolian vibration is a general concern problem around the world. Because the vibration is high-frequency and durative, it becomes an important security risks for transmission line, and limits to reduce conductor costs. With....
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Development of Simulation and Management System of Water Supply Networks Based on SCADA System
Water supply network is an important basic provision for supporting and ensuring the economic development and people\'s life.With the rapid development of social economy and expansion of city scale,water supply network becomes lager and larg....
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Tensile Performance of Woven Membrane Materials under Uni-axial, Bi-axial and Multi-axial Loads
Lightweight structures,such as tension structures and air-supported structures, have been applied widely in the past thirty years.Woven membrane materials as roof materials used for this kind of structures play an important role in the appli....
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Discontinuous Deformation Analysis Method Based on Complementary Theory
The Discontinuous Deformation Analysis(DDA) method is suitable for solving geotechnical problems with many discontinuous interfaces inside the concerned domain,such as the stability analysis of fractured rock mass.The history of various disc....
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Study on Method for Nonlinear Analysis of Deepwater SCR Based on Inertial Coupling
When offshore oil and gas activities move to deeper and deeper oceans, various innovative floating structures are proposed and developed to comply with severe deep-water environments and to reduce the cost. Steel catenary risers (SCRs) for d....