bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and Simulation Analysis of Cold Energy Utilization System of LNG Floating Storage Regasification Unit
Authors: Zhang Gang , Li Boyang , Zhang Xiaorong , Wang Qingguo 
Published: August 2019

Abstract
This paper aims at the problem of cold energy utilization of LNG floating storage regasification unit (FSRU). A comprehensive LNG-FSRU cold energy utilization scheme was proposed based on ship-shore sharing. Using energy cascade theory and energy conservation theory to design a cold energy cascade utilization system that includes air separation, dry ice making, horizontal two-stage Rankine cycle power generation, seawater desalination, ship refrigerated storage, air conditioning and ice making. Using Aspen HYSYS to carry out system simulation calculation and parameter optimization to determine the optimal program and operating parameters. Establishing the mathematical model of the cold exergy utilization system to analysis cold energy efficiency by using the Peng-Robinson equation calculation method. The analysis results show that the using efficiency of cold exergy reaches 29.57% which proves that the cold utilization system of the floating LNG storage regasification plant is reliability with large economic value.
Network Security System and Implementation Scheme of Information Infrastructure in Geological Prospecting Industry
Authors: Huang Feihu , Huang Wei 
Published: August 2019

Abstract
This paper analyzed the construction requirements of the network security of information infrastructure in the geological prospecting industry, and proposed a network security system of information infrastructure for the geological prospecting industry, including physical security, network communication security, computing environment security, regional border security and security management. With the weak infrastructure of the industry units and the lack of operation management system, the overall solution for the network security construction of information infrastructure for the geological prospecting industry was proposed. Based on the constructed information security system and the overall solution, a typical network security implementation scheme of information infrastructure for the geological prospecting industry units is proposed.
Comparative Analysis and Research of Different Ways to Deal with the Soft Soil Foundation
Authors: Chen Jia , Chen Wei , Zhang Ke , Yu Jing 
Published: August 2019

Abstract
Taking an engineering example as background, the deformation and settlement of CFG pile and artificial bored pile composite foundation under the same geological condition are analyzed by using finite difference method. The simulation results show: the same formation and pile material and compaction process, the large diameter and deep manual bored pile foundation can significantly restrain the foundation drop, the analysis results have certain reference value for similar projects.
Study on Dynamic Mechanical Properties of Limestone Under Impact Loading
Authors: Shan Renliang , Song Yongwei , Zhang Haochen , Wang Mengnan , Hao Xiaolin 
Published: August 2019

Abstract
In order to study the variation of the mechanical properties of limestone under the condition of impact load, the dynamic mechanical properties of limestone under different strain rate and cyclic impact conditions were studied. The results show that the uniaxial compressive strength of limestone is 93.76MPa and the acoustic velocity is 5122m·s-1, and under the condition of single impact load, the peak stress and strain rate are positively correlated. The peak strain increases with the increase of strain rate, and the larger the strain rate, the more serious the fragmentation of limestone. Under the condition of cyclic impact load, the cumulative damage of limestone increases gradually, and the more impact times, the faster the increase speed.
Research on Characteristics and Sustainable Development of Mineral Resources in China
Authors: Zhang Yu , Wang Zimeng 
Published: August 2019

Abstract
China is rich in total mineral resources, but per capita possession of less, more poor ore, mineral resources supply is prominent, and there are problems such as resource waste and environmental pollution; Therefore, in order to achieve sustainable development of mineral resources, it is necessary to strengthen exploration, realize stable allocation of resources, increase strategic reserves, and improve the level of comprehensive utilization of mineral resources, so as to achieve sustainable and healthy development of mineral resources and bring benefits to future generations. On the basis of enumerating the characteristics of China’s mineral resources, this paper analyzes the factors restricting the sustainable development of mineral resources, and puts forward measures to realize the sustainable development of mineral resources by strengthening the legal system and promoting management.
Study on Permeability Characteristics of Granites with Different Degrees of Weathering
Authors: Chen Lingqiang , Hu Wenyi , Zhu Liubing , Feng Yong , Min Youwei , Liu Lingfeng 
Published: August 2019

Abstract
In Guangzhou Metro line 21 tunnel construction process, weathered granite shows diversification in strength, deformation characteristics and permeability characteristics. The rock mass permeability coefficient is the core parameter necessary in the construction, and the definition of its value directly affects the accuracy of the calculation in design of tunnel anti-drainage structure and the negative effect evaluation of groundwater environment. With on-site and indoor tests, theoretical calculations, microstructure observations and mineral analysis, the permeability characteristics of granites in different degrees of weathering is studied. The variation of the final permeability characteristics is described. The permeability of granite does not increase unidirectionally as the degree of weathering deepens.
Wax Inhibitor Screening by Differential Scanning Calorimeter for High Wax Content Crude Oil
Authors: Zhang Zhifang , Gao Wenwen , Yun Bo , Lu Xiao , Chen Shijun , Gu Xuefan 
Published: August 2019

Abstract
In order to investigate the wax inhibition performance of various inhibitors different scanning calorimetric (DSC), a powerful and quickly technique having no request of sample pretreatment, has been used for investigation the thermal characteristics of the wax remover. According to the parameters such as wax appearance temperature (WAT), content of wax and rheology, it is found that the best wax removing rate can be reached to 457mg/L•h under 40°C with 150mg/L surfactant combination (fatty alcohol polyoxyethylene ether + calcium petroleum sulfonate + mixed alcohol).
Evaluating the similarity rules applied to model experiment of large-scale tuna purse seine
Authors: Zhou Cheng , Xu Liuxiong , Tang Hao , Wan Rong , Zang Yingliang , Liu Lili 
Published: August 2019

Abstract
This study primarily evaluated the effects of different small-scales on the model criteria in theory and proved the feasibility of introducing prototype netting and Tauti’s law to construct the large-scale purse seine model net. It was concluded that difference of scale of twine diameter/mesh size will not affect the model law. An experiment of testing with the gear model based on the Tauti’s law and sea trial of full-scale fishing gear were executed. Due to the restriction of Tauti’s law applied to purse seine gear model test, this study modified the model criteria by introducing the shooting speed into the scale to form segmented conversion law. In the shooting process, shooting speed is the main factor determining the sinking depth and speed of the gear. After shooting, gravity and drag are the main factors controlling gear submergence in this case where Tauti’s law was able to keep the similarity. The comparison of sinking depth and speed between prototype net and model net indicated that the corrected conversion law could accurately and practically applied to tuna purse seine model test.
Study on the Reduction Treatment of ink Sludge in Flexo Printing
Authors: Gong Yun , Gu Ping , Yu Zhonghua , Tian Quanhui 
Published: August 2019

Abstract
The paper studied about the characteristics of ink sludge of flexo printing and analyzed the possibility different reduction treatment and disposal. Industrial analysis and elemental analysis to confirm the elemental content, TGA and DTG were used to analyze the weight loss and heat absorption and desorption behavior of dry sludge at different temperature. GC-MS and XRF analysis was applied to analysis the composition and content of the compounds. Three kinds treatment for for ink sludge based on different needs.
Perceived preference of soundscape in a Bamboo Park based on the laws of psychophysics
Authors: Hong Xinchen , Wu Shuting , Jiang Yu , Lan Siren 
Published: August 2019

Abstract
The purpose of this study was to explore the relationship between the physical and the psychological quantity of soundscape preference in the bamboo park. Through semantic difference method, the preference of different soundscape elements in the bamboo park was evaluated, and the physical index in the observation sites was measured at the same time. Finally, after the subjective and objective data fitted by the law of psychophysics, a model for evaluating the soundscape preference in the bamboo park was established. The results show that the trend of subjective and objective data fitting for each soundscape element conforms to the law of psychophysics. Among them, geophony and biophony tend to Fechner’s Law and anthorphony to Stevens’ Power Law.
Study on Diesel Engine Characteristics under Large Transient EGR
Authors: Cui Huasheng , Zhao Zhenfeng , Geng Zhao , Liu Yuhang 
Published: August 2019

Abstract
Modern diesel engines tend to employ up to 50-70% exhaust gas recirculation (EGR) together with high intake pressure and injection strategies to enable low temperature combustion (LTC) cycles for reducing NOx and soot emissions simultaneously. Obviously, the combustion conditions and exhaust emissions are sensitive at such high EGR rate. And any slight fluctuation in the EGR quantity will bring unintended deviations from the desired engine performance, thus LTC mode is only limited at partial engine operation points. So the engine has to switch combustion mode frequently between compression ignition (CI) and LTC region within a few engine cycles in real application, which may result in combustion cyclic variations and even misfire, especially during transient operation. In order to investigate effect of heavy EGR transient process on engine combustion cycles, the experimental work was carried out on a four-cylinder VM common-rail turbocharged diesel engine. The results show that the oxygen concentration in the intake charge almost maintains at steady level at EGR steady conditions, while the exhaust oxygen concentration is affected by exhaust values opening/exhaust values closing (EVO/EVC), and result in intra-cycle fluctuation, which will approximately bring 2% calculation error bandwidth for EGR ratio. From 37% to 55% EGR ratio, the EGR gas is mainly driven by the pressure ratio of intake and exhaust duct, and it will experience a long accumulating process to reach a new equilibrium. And the inordinate delayed injection timing will promote in-cylinder cycle-to-cycle variation and even misfire, especially during transition from CI to LTC region.
Scouring Effect of Pavement Runoff in Initial Stage
Authors: Zheng Chaocheng 
Published: August 2019

Abstract
The rainfall runoff events from July 2017 to August 2018 were sampled and tested by artificial equal time interval sampling method. The pollution emission characteristics and initial scouring effects of SS, COD, dissolved COD, heavy metals such as Cu, Pb, Zn, Cr, Ni, Cd and dissolved heavy metals in the runoff process were studied.
Environmental Impact Analysis of the Whole Life Cycle of Pure Electric Vehicles
Authors: Xiao Peng , Wen Qinghong 
Published: August 2019

Abstract
Based on the method of life cycle assessment, this paper makes a comprehensive analysis of the environmental impact of pure electric vehicles in the three most important stages of automobile manufacturing, automobile use and vehicle scrap recovery. The environmental problems caused by pure electric vehicle and traditional fuel vehicle represented by Santara are compared. The results show that the total energy consumption of the pure electric vehicle is 60.8% of that of the fuel vehicle in the whole life cycle, and the energy consumption of the traditional fuel vehicle is 58.6% of that of the pure electric vehicle in the automobile manufacturing stage, but the emission of pollutants is higher. In the use stage of the vehicle, the energy consumption of the pure electric vehicle is that of the fuel vehicle. The energy consumption of pure electric vehicles is 52.2% of that of fuel vehicles, and the emissions of pollutants are still lower than those of fuel vehicles. Generally speaking, the energy consumption and pollutant emission of pure electric vehicles in the whole life cycle are lower than those of traditional fuel vehicles. Therefore, under the national policy of sustainable development, the state should vigorously advocate and subsidize the development of pure electric vehicles.
Analysis on the Influence of Indoor Air Pollution on Human Health and Prevention Measures
Authors: Wang Xiaoxiao 
Published: August 2019

Abstract
Indoor air pollution has become another murderer endangering human health, so indoor pollution control has become an urgent need to be solved. This paper mainly analyzes the sources and hazards of pollutants, the means of prevention and control of pollutants, and offers countermeasures and suggestions. It aims to let people know the source of indoor pollutants and realize the harm of indoor air pollution. According to pollutants and their concentrations, Take appropriate control measures to avoid or reduce the harm of pollutants to the human body.
Analysis of NO emission characteristics of low-order blended fuels
Authors: Luo Xiaoyu , Fang Yuan , Qiao Lei , Tang Zhengming , Xiong Teng , Tian Lirong , Sun Haijun 
Published: August 2019

Abstract
Two kinds of typical coal (HSQ bituminous coal and LY anthracite coal) were selected as the object of research, and in the fixed bed reactor a series of research was carried to make a thorough inquiry on NO emission characteristics of coal combustion under different blending modes. The results of coal blended combustion show that: Improving the ratio of bituminous coal can advance the ignition and burnout, and improve the combustion performance of coal. When two kinds of coal burn blended, NO emission is between the concentration of these two kinds of single coal, and the NO conversion rate increases gradually with the growth of the proportion of anthracite; the interrelationship between these two kinds of coal has influence on NO emission, which is showed as form of inhibition or promotion when ratio of mixed coal is changed.
Evaluation of Ecosystem Services in Altay Region of Xinjiang
Authors: Xiong Yufei , Lei Na , Xu Hailiang 
Published: August 2019

Abstract
The Altay region of Xinjiang is rich in natural resources. It is a gathering place for energy resources in the northern part of Xinjiang and even in Xinjiang. Due to human activities and natural disasters, the ecology of the Altay region has been destroyed to some extent. For the ecological sustainable development of the Altay region, maintaining the ecological environment stability of the Altay region, assessing the value of ecosystem services in the Altay region, understanding the changes in the value of ecosystem services in the Altay region at this stage, and providing scientific and sustainable management and efficient management of environmental resources basis.
Application of Data Mining Technology in Analyzing the Impact of Mileage on Unqualified Rate of Vehicle Emission Inspection
Authors: Tuu Nguyen Van , Chu Jiangwei 
Published: August 2019

Abstract
The study uses data mining method to analyze the impact of mileage on the unqualified rate of vehicle emission inspection. The result of data mining shows that with the increase of mileage, the unqualified rate of commercial vehicles and noncommercial vehicles increased. Specifically, in the range of 0-200,000 km, the emission inspection unqualified rate of commercial vehicles is twice that of noncommercial. In the range of 200,000-600,000 km, the emission inspection unqualified rate of commercial vehicles is always higher than that of non-commercial vehicles. This result shows that mileage has a significant impact on vehicle emission status, and the unqualified rate of vehicle emission inspection is proportional to mileage mission inspection data.
Research on the Improvement of Ecological Development of Salt-alkali Land in Tianjin
Authors: Wang Yangyang 
Published: August 2019

Abstract
This paper studies the ecological development and improvement measures of the two important saline-alkali land in Dongli Lake Resort in Dongli District and Sino-Singapore Eco-city in Binhai New Area of Tianjin, and puts forward the harm caused by saline-alkali land to the ecological environment. It also provides suggestions for ecological development and improvement of saline-alkali land.
Study on Environmental Impact Factors of Carbon Emissions and Air Pollution Control in Transportation Industry
Authors: Zhuang Hu , Bai Yujuan 
Published: August 2019

Abstract
Since the industrial revolution, global warming has become more and more serious. Existing research shows that the significant increase in greenhouse gas emissions such as CO2 is the most important cause of global warming. Therefore, all countries have begun to formulate practical and feasible carbon emission reduction policies and measures. China is the largest developing country in the world and the largest energy consumer, facing many pressures to reduce emissions. This paper takes the carbon emissions of China’s transportation industry as the research object, based on the carbon emissions of China’s transportation industry from 2003 to 2017. Through the analysis of data, transportation industry added value, transportation intensity, transportation energy intensity and transportation energy structure were introduced to study the environmental impact factors and air pollution control of China’s transportation industry carbon emissions. Through the expanded STIRPAT model, the order of influence of various factors is ranked from the largest to the smallest: population size, transportation energy structure, transportation intensity, transportation energy intensity, transportation industry added value. This paper conducts a comprehensive and in-depth study on the influencing factors of China’s transportation industry carbon emissions, identifies the main influencing factors, and lays an important theoretical foundation for China to develop emission reduction targets and measures that meet environmental requirements and self-development.
Comprehensive Evaluation of the Eco-Environmental Carrying Capacity of Beijing-Tianjin-Hebei Urban Agglomeration
Authors: Li Jian , Zhou Yongkai 
Published: August 2019

Abstract
In order to study the eco-environmental carrying capacity of Beijing-TianjinHebei urban agglomeration, this paper constructed the evaluation indexes system of the urban eco-environmental carrying capacity of Beijing-Tianjin-Hebei based on the DPSIR concept model, determined the weights of indexes by entropy method, evaluated the urban eco-environmental carrying capacity combined with TOPSIS method, and analyzed the urban eco-environmental carrying capacity of Beijing-Tianjin-Hebei in 2012-2016 through horizontal comparison and longitudinal analysis. The results show that the spatial differences of Beijing-Tianjin-Hebei city’s eco-environmental carrying capacity are obvious, showing the characteristics of “strong in the middle north and weak in the south”. Since 2014, the eco-environmental carrying capacity of 13 cities in Beijing-Tianjin-Hebei has been significantly improved, and the effect of eco-environmental governance is remarkable.
Research on a new energy-recovery system for hybrid hydraulic excavators
Authors: Zhang Daqing , Gong Jun , Zhao Yuming , Liu Changsheng , Hu Peng , Tang Zhongyong 
Published: August 2019

Abstract
Hydraulic excavators, especially medium and large excavators, waste a lot of energy during the frequent lifting-lowering process of its boom. Recovery and regeneration the wasted energy is an important means to achieve energy saving and emission reduction of excavators. In this paper, a potential energy recovery and regeneration system based on a multi-cylinder structure working device is invented. Firstly, the theoretical analysis of the system, and the modeling and simulation research are carried out. Results show that under the same boom-single-action conditions, the energy-saving efficiency of the excavator equipped with energy recovery system can reach 33%, it has important reference significance for evaluating the energy efficiency of the new system.
Evaluation Model and Analysis of Lithium Battery Energy Storage Power Stations on Generation Side
Authors: Xu Qian , Zhang Lijun , Sun Yikai , Zhang Yihong , Liu Yingxin , Li Mingzhu 
Published: August 2019

Abstract
With the advancement of smart grids, energy storage power stations in power systems is becoming more and more important, especially in the development and utilization on generation side. Environmental issues and energy rises have driven the development of distributed energy, and have also promoted the development and application of energy storage power stations. This paper analyses the indicators of lithium battery energy storage power stations on generation side. Based on the whole life cycle theory, this paper establishes corresponding evaluation models for key links such as energy storage power station construction and operation, and evaluates the reasonable benefits of lithium battery energy storage power stations on generation side. Compared with the existing evaluation methods at home and abroad, the model in this paper is more in line with the construction progress of China’s energy storage power station, and has great significance for the commercial application evaluation of China’s lithium battery energy storage power stations on generation side.
Feasibility Study on Quality Standards for Patrol and Inspection Transmission Lines by Helicopter
Authors: Du Wei , Sun Hongbo , Li Yuanyuan , Cheng Haitao 
Published: August 2019

Abstract
The framework for the basic content of quality standards for patrol and inspection by helicopter in power industry is designed through the analysis carried out to the current status of patrol and inspection business of the State Grid Corporation of China, especially the problems in aspects such as false alarms of defect, lack of standardization in descriptions of defective photos, abandoning of aviation and carryover lines, untimely submission of products, and incomplete submission of products, etc., and on the basis of the method of correlation analysis and analysis of factors of influence. And based on that, it formed the inner quality standard of the State Grid Corporation of China are formed.