bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of gold nanoparticles on the nonlinear optical and photoluminescence properties of Eu2O3 doped alkali borate glasses
Authors: Jagannath G. , Eraiah B. , Jayanthi K. , Keshri Shweta Rani , Som Sudipta , Vinitha G. , Pramod A. G. , Krishnakanth K. N. , Devarajulu G. , Balaji Sathravada , Venugopal Rao S. , Annapurna K. , Das Subrata , Allu Amarnath R.
Published: December 2019

Alkali borate glasses activated with trivalent europium ions and rooted with gold (Au) nanoparticles (NPs) were prepared involving a selective thermochemical reduction and their applicability as photonic materials was assessed in detail.
In water alkylation of amines with alcohols through a borrowing hydrogen process catalysed by ruthenium nanoparticles
Authors: Risi Caterina , Calamante Massimo , Cini Elena , Faltoni Valentina , Petricci Elena , Rosati Filippo , Taddei Maurizio
Published: December 2019

Secondary amines are obtained with low environmental impact with a minimal amount of surfactants and organic solvents (biomass derived) employed only for product separation.
Methanol-based acetoin production by genetically engineeredBacillus methanolicus
Authors: Drejer Eivind B. , Chan Dennis Tin Chat , Haupka Carsten , Wendisch Volker F. , Brautaset Trygve , Irla Marta
Published: December 2019

Establishment of sustainable technology for methanol-based production of acetoin by metabolically engineeredBacillus methanolicus.
Three-dimensional microfluidic tape-paper-based sensing device for blood total bilirubin measurement in jaundiced neonates
Authors: Tan Weirui , Zhang Liyuan , Doery James C. G. , Shen Wei
Published: December 2019

More than 60% newborns experience hyperbilirubinemia and jaundice within the initial week after birth due to the accumulation of total bilirubin in blood.
Localized microinjection of intactDrosophila melanogasterlarva to investigate the effect of serotonin on heart rate
Authors: Zabihihesari Alireza , Hilliker Arthur J. , Rezai Pouya
Published: December 2019

Intact-larvaDrosophilamicroinjection with spatial precision was achieved using a microfluidic chip. Effect of serotonin on heartrate was characterized semi-automatically.
A self-contained and fully integrated fluidic cassette system for multiplex nucleic acid detection of bacteriuria
Authors: Li Nan , Lu Ying , Cheng Jing , Xu Youchun
Published: December 2019

A novel self-contained microfluidic system was proposed to automatically detect multiple bacteria in urine samples within 100 minutes.
Chiral gold–PPA nanocomposites with tunable helical sense and morphology
Authors: Bergueiro Julián , Núñez-Martínez Manuel , Arias Sandra , Quiñoá Emilio , Riguera Ricardo , Freire Félix
Published: December 2019

A novel type of stimuli-responsive dynamic helical polymer–metal nanoparticle nanocomposite formed by a helical poly(phenylacetylene) (PPA) combined with gold nanoparticles (AuNPs) is described.
A dihydronaphthalene based fluorescence probe for sensitive detection of cysteine and its application in bioimaging
Authors: Cui Mengyuan , Xia Lili , Gu Yueqing , Wang Peng
Published: December 2019

A novel small molecule fluorescent probe NC-Cys for monitoring cysteine based on dihydronaphthalene was developed.
Nitration of benzothioxanthene: towards a new class of dyes with versatile photophysical properties
Authors: Andrés Castán José María , Abad Galán Laura , Li Shi , Dalinot Clément , Simón Marqués Pablo , Allain Magali , Risko Chad , Monnereau Cyrille , Maury Olivier , Blanchard Philippe , Cabanetos Clément
Published: December 2019

The selective mono-nitration of benzothioxanthene (BTXI) is demonstrated here, opening doors to a wide range of structures and reactions. In addition, a new series of derivaties was characterized expanding the scope for electronic organic purposes.
Methylotrophic methanogens everywhere — physiology and ecology of novel players in global methane cycling
Authors: Söllinger Andrea , Urich Tim
Published: December 2019

Research on methanogenic Archaea has experienced a revival, with many novel lineages of methanogens recently being found through cultivation and suggested via metagenomics approaches, respectively. Most of these lineages comprise Archaea (potentially) capable of methanogenesis from methylated compounds, a pathway that had previously received comparably little attention. In this review, we provide an overview of these new lineages with a focus on the Methanomassiliicoccales. These lack the Wood–Ljungdahl pathway and employ a hydrogen-dependent methylotrophic methanogenesis pathway fundamentally different from traditional methylotrophic methanogens. Several archaeal candidate lineages identified through metagenomics, such as the Ca. Verstraetearchaeota and Ca. Methanofastidiosa, encode genes for a methylotrophic methanogenesis pathway similar to the Methanomassiliicoccales. Thus, the latter are emerging as a model system for physiological, biochemical and ecological studies of hydrogen-dependent methylotrophic methanogens. Methanomassiliicoccales occur in a large variety of anoxic habitats including wetlands and animal intestinal tracts, i.e. in the major natural and anthropogenic sources of methane emissions, respectively. Especially in ruminant animals, they likely are among the major methane producers. Taken together, (hydrogen-dependent) methylotrophic methanogens are much more diverse and widespread than previously thought. Considering the role of methane as potent greenhouse gas, resolving the methanogenic nature of a broad range of putative novel methylotrophic methanogens and assessing their role in methane emitting environments are pressing issues for future research on methanogens.
The analysis and research on variable operating condition of exhaust steam and waste heat Cascade utilization system of air cooling heating unit
Authors: Zhao Ning , Fan Xiaoying , Ji Lite , Chen Ya-mi
Published: December 2019

The series and parallel exhaust heat cascade utilization system was adopted by the large direct air cooling heating units. On the one hand, this system could reduce the adverse impact on power generation; on the other hand, it could reduce the temperature difference of heat transfer through step by step heating, the irreversible loss could be reduced, and the energy utilization efficiency could be made higher. On the basis of grasping the design performance of exhaust steam utilization system and the variable operating performance of main equipment by analysing the data of typical operating conditions, the optimization analysis model of heat pump group and the whole plant was established by this paper. The performance of heat pump unit under variable operating conditions was analysed and calculated, the influence of different exhaust pressure and backwater temperature on the economy of the whole machine was analysed, and the optimal operation mode of the heat pump was obtained. Finally, the pumping and condensing ratio curves under different conditions of winter heating conditions were determined, which could guide the optimal operation of heat pump units. It also provided technical support and basis for deep peak regulation or flexible transformation of heating units.
Network fault diagnosis and rectification Suggestions for 300MW unit under I/A Series system
Authors: Le Ying , Pan Binbin
Published: December 2019

With the progress of science and technology, DCS has been widely used in the field of power plant automation. It integrates modern computer technology, modern control technology, modern communication technology and CRT technology to realize the monitoring and control of power production process. DCS network adopts 10Mbps Ethernet, which is the data transmission channel of DCS system. Its stability is related to the safe operation of the whole power plant. Therefore, more and more power generation enterprises begin to attach importance to network security management of DCS. In this paper, the author puts forward his own views on the network failure phenomenon of Foxboro I/A Series system, and gives the solution, hoping to have some reference significance for the safety management work of other similar DCS network of the unit.
Optimal Operation of a Trigeneration System Based on Gas-Steam Combined Cycle
Authors: Dong Yihua , Wang Wanshan , Zhang Xi , Lin Junguang , Luo Haihua
Published: December 2019

In order to save the energy of the trigeneration system based on gas-steam combined cycle, this paper proposes to explore optimal operation modes related to primary energy saving (PES) and operating costing saving (OCS) respectively, by considering the parallel operation of the gas turbine and the steam turbine valve. By taking the summer load of an office building group as the research object, the variations of controllable parameters and indexes are analysed in the trigeneration system with the traditional operation mode and the optimal operation modes. The results suggest that the proposed two operation modes over energy saving and economic aspects are more appropriate than the traditional modes.
Robustness Evaluation Strategy of Ubiquitous Power Internet of Things Based on Important Node Recognition
Authors: You Lu , Zhiyuan Pan , Wei Xu
Published: December 2019

This paper analyses the structure and characteristics of ubiquitous power Internet of things (UP-IoT) from four levels: the perception layer, network layer, platform layer and application layer. The robustness of UP-IoT is defined from the perspective of system structure, and the internal and external disturbance factors of robustness are analysed. According to the scale-free characteristics of complex network, a robustness evaluation strategy for UP-IoT based on identification of important nodes is proposed. A set of robustness evaluation indexes, including degree centrality, betweenness centrality, closeness centrality, maximum connectivity and connectivity factors, are established to quantify the importance of nodes. The model in this paper is used to analyse the UP-IoT network model with 12 nodes and verify the feasibility of the evaluation strategy.
Multi-layer Long Short-term Memory based Condenser Vacuum Degree Prediction Model on Power Plant
Authors: Lu Kuan , Gao Song , Xiangkun Pang , lingkai Zhu , Meng Xiangrong , Sun Wenxue
Published: December 2019

A multi-layer LSTM (Long short-term memory) model is proposed for condenser vacuum degree prediction of power plants. Firstly, Min-max normalization is used to pre-process the input data. Then, the model proposes the two-layer LSTM architecture to identify the time series pattern effectively. ADAM（Adaptive moment）optimizer is selected to find the optimum parameters for the model during training. Under the proposed forecasting framework, experiments illustrates that the two-layer LSTM model can give a more accurate forecast to the condenser vacuum degree compared with other simple RNN (Recurrent Neural Network) and one-layer LSTM model.
Fault Diagnosis Technology of Intelligent Substation UPFC System Based on Abnormal Sub-module Port Voltage
Authors: Zhao Jinghong , Jin Lei , Meng Fanbo , Hong Xin , Huang Xing
Published: December 2019

Unified power flow controller (UPFC) combines the advantages of FACTS devices of series and parallel, which is an important direction for the development of intelligent substations in the future. However, a large number of MMC submodules have become potential fault points of UPFC system. The rapid judgment of fault state and accurate positioning of fault sub-modules are the primary conditions to ensure the safe and stable operation of UPFC system, which can effectively reduce the mobile operation and maintenance time of power engineering operation and maintenance personnel, and guarantee the safety of operation and maintenance. Therefore, this paper proposes a fault diagnosis technology of intelligent substation UPFC system based on abnormal sub-module port voltage (SPVE). Experimental results show that the SPVE method has advantages in identification accuracy and rapidity.
Design of smart home microgrid with high permeability distributed photovoltaic
Authors: Cao Xiaodong , Yang Shihai , Ji Feng , Liu Songyang , Zhou Xu
Published: December 2019

The high permeability of household distributed photovoltaic is prevalent after its access. The connection between distributed generation and main network is cut off quickly and the energy storage device is used to realize energy storage. From the point of view of economy and rationality, the above-mentioned operation has become increasingly unable to meet the health of the grid after the access of distributed generation. In this paper, a construction scheme and operation strategy of household micro-grid including household energy efficiency management is designed by using equipment and equipment integration, equipment and system integration, system and system integration of household micro-grid and household energy efficiency management. It adds in-situ absorption capacity of distributed photovoltaic, realizes efficient integration of household energy efficiency management and household microgrid, effectively solves the problems of high permeability of household distributed generation, and has certain application value in the user side.
Market-oriented Operations Strategy of CCHP with Multiple Models
Authors: Wang Xi , Wang Wei , Xu Hao , Ye Qiang , Chen Shi , Jia Chuyun
Published: December 2019

In this paper, the Market-oriented Operations Strategy of CCHP are analysed, from the perspective of construction mode, operating mode and charging mode. On this basis, a three-dimensional indexes system is established, and combining the entropy weight method with Analytic Hierarchy Process as a comprehensive evaluation method to evaluate the different market-oriented strategies of CCHP. Finally, the empirical analysis of the commercial building in southwest China shows that the market-oriented strategy of CCHP can bring more benefits to market participants when it has high applicability and great practical value.
Material Parameters Acquisition and Sound Insulation Performance analysis of Membrane-type Acoustic Metamaterials Applied for Transformer
Authors: Yuchao Ma , Juan Mo , Ke Xu , Xiang Li , Xinbo Sun
Published: December 2019

As a light-weight and ultra-thin artificial material, acoustic metamaterial have more different attributes than natural material. The study of sound insulation for acoustic metamaterial is hot, and the membrane-type acoustic metamaterials supplement the deficiency of linear sound insulation materials. The physical material parameters (young modulus and loss factors)of base material of membrane-type acoustic metamaterials (PVC) is obtained by cantilever beam dynamic measurement method. The acoustic metamaterial sound insulation analysis is simulated by CAE method based on the material parameters that measured. The configuration of the simulation accuracy is measured on impedance tube, and the design work of the acoustic metamaterial sound insulation for transformer is provided. The relationship between sound insulation and the mass on membrane-type acoustic metamaterial at the different frequencies (100Hz to 500Hz) provides the reference to set sound insulation frequency.
Study on the Connotation of Holistic Design Associated with De Stiji Architecture and Furniture
Authors: Xiao-li Fu , Zhi-yong Dai
Published: December 2019

The modern furniture has been closely linked to architecture since its inception. There is an intrinsic correlation between furniture and architecture in Schröder House, which is designed by Gerrit Rietveld who is one of the masters of De Stiji architecture. The architectural space is constructed based on the design vocabulary of ‘architectural furniture’. On the contrary, the furniture design presents the characteristics of "furniture building”. The article tries to assay the history between Schröder House and De Stiji, the characteristics of the epoch, and combined with Gerrit Rietveld’s design thought and related works, it analyzes the integration between furniture and architecture from the angles of structural system based on scaffolding, spatial ratio based on golden segmentation, colour system based on t primary colours in Schröder House.
A Qualitative Case Study on the Adoption of Smart Warehouse Approaches in Malaysia
Authors: Reima Kutty Krishnan Elizabeth , Norida Wahab Siti
Published: December 2019

This qualitative case study explores the factors that influence the adoption of smart warehouse in Malaysia. Purposive sampling is used to carry out this research by conducting interview discussion with several respondents. Lack of warehouses in Malaysia is that adopt smart warehouse and still on manual operation. In this study, a discussion report would be done relating to the TOE framework (technological, organizational and environmental) influences in adopting smart warehousing. The types of technologies being implemented in the warehouses in Malaysia are being evaluated and further discussed on the similarity of thoughts. The findings of this research show that most respondents agree that implementing smart warehouse approaches would bring relative advantage. Warehouses in Malaysia in terms of technology implementation are still at very surface and backwards. Top management and cost are two factors that would influence organization readiness towards smart warehousing, whereas external pressure, government support and geographical location would influence the adoption of smart warehousing. This research can be used as a reference for future researches on encouraging warehouses in Malaysia to adopt smart warehouse approaches.
Numerical Simulation of Heat Transfer Characteristics between Liquid Lithium Lead and Oil
Authors: Tian Shujian , Zhao Ming , Song Xiaoyong , Kong Deyan , Yue Can , Wang Weishu , Zhuang Sixuan
Published: December 2019

The liquid LiPb experimental loop is an essential device for studying the compatibility of LiPb with structural materials of the fusion reactor. The heat exchanger is one of the most important devices of the LiPb loop, which is used to control the temperature distribution and study the LiPb flow characteristics in the working condition of the LiPb loop. Based on the heat transfer theory, the liquid LiPb experimental loop cooler is designed at first, which is a tube-type countercurrent heat exchanger with YD-300 heat-conducting oil as the coolant. Numerical simulation analysis was carried out to verify the feasibility of the design scheme under the design condition and the normal operation by using the FLUENT software. The results show that the theoretical design parameters are in good agreement with the numerical simulation results and the average concentration deviation is less than 2%. Furthermore, the average volume temperature and film temperature of heat conducting oil under different working conditions are lower than 310℃ and 375℃ respectively, which indicates that the cooling effect of the LiPb fluid can be realized and the design scheme of the cooler is reasonable.
Development status and suggestions of Natural Gas Power Generation Industry in China
Authors: Li Sun , Hongmei Li , Jinyan Xing , Yun Pan
Published: December 2019

At present, the development speed of natural gas power generation in China lags far behind the world average level, and there are many problems in the gas electricity industry, including the high gas price of natural gas is difficult to dredge the electricity price, the online electricity quantity is difficult to guarantee, the natural gas supply has the bottleneck, the power plant lacks the bargaining right and so on, which seriously restricts the healthy and sustainable development of the natural power generation industry. On the basis of combing and investigating the existing problems of natural gas power generation in China, this paper expounds the orientation and goal of the development of China's natural gas power generation industry, and puts forward some concrete suggestions for promoting the development of China's natural gas power generation industry.
The Development Trends of Fuel Cell Technologies Based on Patent Analysis
Authors: Xinyu Tan , Yingxuan Zhang , Sanhong Deng
Published: December 2019

Fuel cells are made from fuel and oxygen. Because of its low pollution, high energy conversion efficiency and high reliability, fuel cell has become the future direction of new energy application, the technological development path in the field of fuel cell research has great significance to the development of technological and energy innovation. Using the patent analysis method, this paper analyses the patent data from Derwent Innovation Index quantitively to study the state of application for patents, core technologies, highly cited patents and the main patentees. It shows that auxiliary device and related methods were a research hotspot in recent years; as the biggest patent holder of fuel cell technologies, Toyota, Honda motor Co. and Nissan motor Co. have an advantage. This paper has discovered some potential problems behind the phenomena and some suggestions are put forward finally.
High Speed PMSM Anti-saturation Regulation Method Based on Hybrid Flux Weakening Technology
Authors: Li Na , Cao Xiaodong
Published: December 2019

For traditional permanent magnet synchronous motor (PMSM) flux weakening method, it is easy to cause voltage command saturation and the system lose control. In order to solve this problem, we propose a high speed PMSM anti-saturation regulation method based on hybrid flux weakening technology. The feedforward channel of this method is designed as a two-dimensional table of torque/flux linkage. The expected value of the current current of dq axis is directly checked through the current flux linkage and torque instruction to ensure the dynamic response of the system. In the feedback channel, the voltage instruction compensation link is proposed in this paper. In combination with the output instruction of the current controller, the speed and bus voltage information, the flux instruction required by the feedforward channel is adjusted. Finally, the experimental results verify that the proposed method meets the requirements of high-speed PMSM fast dynamic response, and improves the reliability of the system when it is running at high speed.
Solar thermal power generation technology research
Authors: Liu Yudong , Li Fangqin , Ren Jianxing , Ren Guizhou , Shen Honghong , Liu Gang
Published: December 2019

China is a big consumer of energy resources. With the gradual decrease of non-renewable resources such as oil and coal, it is very important to adopt renewable energy for economic development. As a kind of abundant renewable energy, solar power has been widely used. This paper introduces the development status of solar power generation technology, mainly introduces solar photovoltaic power generation technology, briefly describes the principle of solar photovoltaic power generation, and compares and analyzes four kinds of solar photovoltaic power generation technology, among which photovoltaic power generation technology is the most mature solar photovoltaic power utilization technology at present.
An interpretative structural model based on SPSS for the interaction analysis between risk factors of power grid
Authors: Huang Yichao , Huang Ruanming , Li Xinjian , Chen Shujuan , Guo Mingxing , jiang Qin , He Yuqing
Published: December 2019

The risk factors influencing the analysis of power grid investment are complicated and highly coupled. The analysis of the interaction of risk factors based on the traditional interpretative structural model, using the expert score to form correlation matrix, which is subjective. To increase the quantitative analysis and overcome the drawbacks of traditional model relying on experts’ experience, this paper proposes a new method to construct the interpretative structural model. Firstly, the evaluation index system of power grid investment is constructed, based on this, the collected history data of risk factors are processed and analysed through the correlation analysis of SPSS and the quantitative correlation matrix of risk factors is obtained, then the construction of interpretative structural model is finished. The constructed model provides the basis for the analysis and management of power grid investment.
Research on Composite Bolt Foundation Design for Transmission Lines
Authors: Yu Xinmin , Wang Xianri
Published: December 2019

There are various forms of foundation used in transmission line engineering, which can be divided into undisturbed soil foundation and non-undisturbed soil foundation according to the form of stress. In view of the geological condition that the upper layer has a thick overburden and the lower layer is rock, the composite bolt foundation is recommended to make full use of its upper undisturbed soil.
Research on Sustainable Design of Regeneration for Traditional Settlement Based on Ecotect Software
Authors: Xi Hong , Liu Ruiqiang , Han Weixiao , Zhang Lei , Sun Leilei
Published: December 2019

Based on the concept of sustainable protection and regeneration, this thesis retrospected and analysed the history and culture, public space and courtyard space of Miaohou village in Hancheng to explore the historical prototype. And combined with Ecotect Analysis software to simulate microclimate environment, the public spaces was reasonable updated and predicted from both qualitative and quantitative aspects to explore the rationalized strategy of rural renaissance. It will provide reference for the development of related construction practice and theory in the future.
A Study on Barriers to Implement E-Waste Management
Authors: Wong Shan Yuan Paul , Kit Mun Ng , Devi Rajendran Salini
Published: December 2019

The increasing of electronic waste (E-waste) is not a new issue in the world and it has been causing trouble throughout the world. This study is conducted to determine and analyze various factors that affect the barriers of E-waste management among the household in Cheras, Malaysia. This study has identified the four independent variables that will affect the implementation of e-waste management among household in Cheras namely lack of awareness, lack of knowledge, lack of cooperation and lack of facilities. Normality test, reliability test and multiple regression analysis with ANOVA test are used to analyse the data in this study. The result shows that all mentions independent variables have a positive relationship with the barriers of implementing e-waste management among households in Cheras. Among these four variables, lack of facilities has the strongest relationship toward the barriers of implementing e-waste management among household in Cheras as it has the lowest significant value which was 0.000. The study recommends of legalize the policies, rules and regulations in order for household to increase their practice on e-waste management and also implement the teaching of e-waste management to increase the knowledge to the young generations.
An exploration aboutthe Solar Energy Utilization and the Enclosure SystemRenovation for Rural Residential Buildings in Cold Areas of Northern China——Taking the rural residential renovation design in Zhujialin Village, Linyi as an example
Authors: Lu Liu , Hui Tong , Hao Li
Published: December 2019

Rural areas in the cold regions of northern China generally suffer from excessive energy consumption, poor thermal comfort, and low thermal efficiency of heating equipment. In order to improve the comfort of ruralresidential buildings, renovation design has become an indispensable part of the current beautiful rural construction.This paper comprehensively analyzes the current situation of rural residential buildings in cold regionsbytaking the transformation ofa farmhouse in Zhujialin of Linyi City as an example. Moreover, the methods of energy-saving renovation of rural houses are explored from two aspects of solar energy utilization and enclosing system renovation. The research provides a feasible reference for energy-saving renovation of other rural areas in the cold regions of northern China.
Fabrication and photoelectrochemical study of selenide and oxide heterostructures for solar hydrogen evolution
Authors: Wan Xiaokang , Xu Yunbo , Fang Tingyong
Published: December 2019

We report the synthesis and photoelectrochemical (PEC) studies of a novel CdSe/BiVO4 planar heterojunction photoelectrodes for photoelectrochemical water splitting fabricated by chemical bath deposition of CdSe on the spin-coated BiVO4 layers. Temperature and time of chemical bath deposition were investigated to obtain the optimal deposition condition. The optimized CdSe/BiVO4 with enhanced photo absorption yielded a maximum photocurrent density of 2.48 mA under the irradiation of AM 1.5 G (100 mW/cm2) simulated solar light illumination, which is enhanced by 3.87 times compared to bare BiVO4.
Study on Energy Saving Application Strategy of New Residential Houses Envelope Structure in Sanjiangyuan Area Based on Dest Orthogonal Simulation
Authors: Tong Yueheng , Chen Yang , Shao Wubing
Published: December 2019

With the rapid development of social economy, the problem of energy is becoming more and more serious, building energy conservation has become the top priority. Considering the abundant solar energy resources in the Sanjiangyuan area, this paper takes reduce the energy consumption of local residential noumena as the objective, and takes energy consumption of residential system as research target. Taking the modern dwellings in the Sanjiangyuan area as an example, to build a typical model, using the Dest software developed by Tsinghua University to dynamically simulate the load variation of building envelope caused by windows, exterior walls, window wall ratio and roof, and 16 orthogonal test results are simulated. Through the simulation analysis of the upper floors of the building, this study explores the changes in the influence of the form of the envelope structure on the building, then analyse the sensitivity of each factor affecting building energy consumption, and find out the optimal scheme of the envelope in the locality. Finally, this paper suggests that the energy conservation of new residential buildings in Sanjiangyuan area should strengthen the thickness of thermal insulation layer of envelop, open large windows in the south, open small windows in the north, and choose energy saving windows with low heat transfer coefficient to reduce energy consumption and save energy.
Thermogravimetric analysis of co-pyrolysis of coal and waste and used tires
Authors: Pan Danlu , Pan Weiguo , Jiang Weiting , Wang Wenhuan , Wang Jian , Yang Yiqing
Published: December 2019

Waste tires can be used as a substitute for coal due to the high calorific value. In this study, the co-pyrolysis characteristics of the waste tires (truck tires, liners and nylon tires), pulverized coal and their blends are studied using thermogravimetric analyzer. The pyrolysis of truck tires, liners and coal is characterized by a three stages reaction while the pyrolysis of nylon tires and their blends are four stages. The pyrolysis characteristics of the blends can be expressed by the superposition of the pyrolysis characteristics of the one-component material, indicating the slight interaction of the co-pyrolysis between the waste tire and the coal. The co-pyrolysis kinetics of waste tires, coal and their blends are also investigated. For the blends of coal with truck tires and liners, the increased content of coal reduces the activation energy in the 2nd stage and leads to an increase and then a decrease in the 3rd stage. Different from the former, the activation energy increases with the increase of tire powder in both the 2nd and 3rd stages in the blends of coal and nylon tires. This is attributed to the fact that the nylon tires contain more synthetic rubber than truck tires and liners.
Research on Construction Practice of Assembled Substation——A Case in Anhui Xuancheng Xinhang 110kV Substation Project
Authors: Ximing Chen , Dian Bao , Chaojun Qian , Shao-jie Zhang
Published: December 2019

The assembled substation is a substation construction that is "resource-saving, environment-friendly, and industrialized" through prefabrication and on-site installation. Taking the Xuancheng Xinhang 110kV substation project in Anhui as an example, this paper studies the standardization development of assembled industrial buildings and substations at home and abroad, points out the problems existing in the construction and buildingpractice of the assembled substation, and puts forward relevant suggestions for these problems.
Analysis of land use dynamic econometric change in Chaohu basin from 2000 to 2015
Authors: Yong Zhong , Shaoru Feng , Muyi Huang , Qiang Zhao , Jiahui Zhang
Published: December 2019

Chaohu basin is located in the central economic belt, as an important part of the Yangtze River Basin. Based on the data of land use classification from 2000 to 2015, this paper makes a dynamic econometric analysis on the spatial structure of land use in Chaohu basin. The results show that: (1) The agricultural land has been in a downward trend from 2000 to 2015. However, the construction land has been increasing. From 2005 to 2010, the change of agriculture and the construction land have reached the maximum value, which are -0.279% and 1.814%, respectively. (2) During 2000-2015, every five years, the change of land use degree in Chaohu basin is greater than 0. The land use in the study area is in the development period, among which the change of land use from 2000 to 2005 is the largest. (3) The information entropy of land use in Chaohu basin is more than 1, and the change of information entropy is more than 0, which indicates that the information entropy is on the rise and the land use is in disorder. The results are of practical significance to the ecological security and optimal regulation of Chaohu Basin.
Design and Development of Light Radiation Testing Equipment for Solar Greenhouse
Authors: Wenxiong Yang , Chengwei Ma
Published: December 2019

A solar greenhouse light radiation testing equipment is designed and developed. The equipment consists of five parts: light radiation sensor, angle adjustment module, height adjustment module, data acquisition box and base module. It is easy to move, easy to use, detachable and assembleable, and can accurately obtain the illumination of the solar greenhouse everywhere, so as to help farmers use sunlight scientifically and rationally, precisely plant, and play a role in increasing production and efficiency. The equipment is not available on the market at present and belongs to original design.
Experimental analysis of a novel Solar PV/T Collector
Authors: Ma Jinwei , Tong Weiwei , Fang Tingyong , He Wei , Wang Kesheng
Published: December 2019

The output power of the solar photovoltaic panel decreases as the operating temperature increases. The use of photovoltaic/photothermal (PV/T) collectors not only effectively cools the operating temperature of the battery, increases photovoltaic power, but also produces hot water. Therefore, the PV/T collector improves the annual utilization efficiency of solar energy, and can meet the user's demand for different energies. This paper builds an experimental platform to compare the PV/T collector photovoltaic/photothermal performance and experimental comparison with traditional PV. The results show that the PV/T collector has a thermal efficiency of 31.5% and a photovoltaic efficiency of 17.82% at a flow rate of 0.023 Kg/s to achieve high efficiency in solar energy utilization.
Analysis of Technical Supervision over Water Supply Pipeline
Authors: Li Wenbo , Liu Lanlan , Wang Jun , Xiao Jian , Zhang Jun , Xie Yi
Published: December 2019

The main function of technical water supply systems of hydropower stations is for cooling and lubricating water equipment, which is directly related to the safe and stable operation of water turbine generators, water cooled transformers and other important equipment. In this paper, two cases of technical water supply system fault are analysed in detail to illustrate the importance of manufacturing and installation of technical water supply system in ensuring stable operation.
Environmental ecosystem services assessment based on urban green infrastructure structure indicators with case study in Shanghai
Authors: Zhao Liang
Published: December 2019

Urban green infrastructure (UGI) attracts much interest because they could provide urban ecosystem services (UES). Among all various methodologies, the UGI structure-based modelling is favored for advantages in physiological mechanisms. This work concerns on environmental services, including “air purification,” “microclimate regulation,” “noise reduction,” “carbon sequestration and storage,” and “rainwater retention.” A new assessment methodology based on UGI structure indicator was constructed with nine UGI model structures and quantitative values. With implemented in two urban parks in Shanghai, this methodology is speculated to be suitable for patch-level cases, and can make certain efforts to regions without sufficient data.
The influences of admixtures on the characteristics of pore structure of low-temperature concrete under different curing conditions
Authors: Tian Yue , Zhang Wanlai , Zhang Yihang
Published: December 2019

Based on the construction characteristics in the Northeast China Region under low temperature conditions, this article studies the influences of admixtures without antifreezing agent of different types and amounts on the low-temperature concrete and characteristics of pore structure. The results show that the amount of the admixtures is stable, the compressive strength of concrete under the curing condition of low temperature naturally varying is higher than the strength under the curing condition of constant low temperature while the porosity of the concrete under the curing condition of low temperature naturally varying is lower than the porosity under the curing condition of constant low temperature; The most appropriate curing method for the concrete used in winter construction is the curing method of low temperature naturally varying.
Application of Green Building Technology in Cold Region Cities
Authors: Dong Junyan , FU Yupi , Li Kechao , Zheng Bomin
Published: December 2019

After half a century of development, green buildings have gradually formed a relatively sophisticated system. Based on the development status of green buildings and the climatic characteristics of cold region cities, the paper analyses the key technologies applicable to cold region cities in combination with actual projects, and provides a theoretical and applied basis for promoting the sustainable development of green buildings in severe cold regions.
Analysis on National Environment of Green Building Assessment Scheme in America and China
Authors: An Wei Guo , Ze Wang Jun
Published: December 2019

This paper briefly analyses the differentiation of the Green Building Assessment Scheme between America and China from the national environment angle to demonstrate the importance of government guidance in the development of green buildings. The establishment of LEED (Leadership in Energy & Environmental Design) mainly complies with the regulation of market mechanisms. On the contrary, China’s Green Building Assessment Scheme “GB/T 50738” cannot entirely rely on the market mechanism due to the national environment. In order to improve the GB/T 50738 to meet Green Building development in China, several suggestions have been proposed in the paper to increase the efficiency and practicality of GB/T 50738 implementations.
Research on existing building space based on the view of sponge City——Taking the bauhinia garden in Tongzhou district of Beijing as an example
Authors: Qi-qi JIANG
Published: December 2019

As the residential area with the largest proportion in the urban functional division, the matrix distribution range is the largest in the rainwater flow path, and it is also an important part of urban sponge implementation. The article explores the sponge transformation of the existing space of Bauhinia Garden, analyzes the existing problems within the community, gives adaptive advice on relevant issues and summarizes relevant experiences. In order to provide experience for the subsequent renovation of the sponge community, it is necessary to restore the water circulation function of the community.
A summary of bim cases based on paihekou pump station
Authors: jingya Zhu , rong Cao , di Xu , wei Zhang
Published: December 2019

BIM technology has been widely used in ordinary residential buildings, but the use of REVIT for water projects is still very little. Aiming at the fast and accurate modeling of pump station in BIM design, design the first built after emptying the method as a whole. The drawing of the curved channel is studied, and a complete splicing design scheme for pump station is proposed. The whole pumping station is divided into blocks, separately modeled and supplemented with details, and then joined together to form a complete building model. The complex problem of pump station design has been solved. In this paper, the feasibility and efficiency of the scheme are verified by the analysis of specific examples.
Development Adaptive Predicted Mean Vote (aPMV) Model for Naturally Ventilated Buildings in Zunyi, China
Authors: Liu Jing , Cai Ting
Published: December 2019

Fanger’s predicted mean vote (PMV) model which is as a result of climate-chamber-based experiments is a good tool to evaluate indoor thermal comfort for air-conditioned buildings in global wide. However, PMV model has defect of predicting people’s real thermal sensation under non-air-conditioned conditions. It is reflected by the significant discrepancies between PMV values and Actual Mean Vote (AMV) values. The aim of this study is to develop an Adaptive Predicted Mean Vote (aPMV) Model on the basis of ‘black box’ theory considering occupants’ adaptations to improve prediction performance. A field study was carried out in naturally ventilated educational buildings in Zunyi, China. The developed aPMV model produces more reliable results and shows better prediction performance, comparing with values predicted by PMV model. It indicates that aPMV model is of great benefit to connect traditional PMV model and adaptive comfort model and consequently to provide guidance on building design, operation and maintenance, which contribute to achieve building energy conservation and emission reduction target.
Application of elbow inlet Revit modeling in BIM technology research of pumping station
Authors: Chengtao Yu
Published: December 2019

With the development of computer technology and BIM technology in water conservancy engineering construction promotion and application. Many previously intractable problems have been solved by the introduction of new technology. BIM technology not only has a powerful information processing capability, but also provides the conditions for solving the problem of building refinement in the construction process. Revit software was used for modeling and parametric management in the project of Paihekou, which solved the problems of accurate calculation, three-dimensional view and fine template making
Operation Analysis of Organic Rankine Cycle under Variable Conditions and Comparison confirmation of simulation calculation
Authors: Xiaoqing Chen , Weiting Jiang , Xianchang Cao , Li’ang Zhang , Chi Chen , Zhiliang Chen , Yiqing Yang , Weiguo Pan
Published: December 2019

The initial simulation calculation of the ORC power generation system was carried out using the software Aspen Plus, and the simulation data matched with the design conditions were obtained. According to the specific structure of the evaporator and superheater in the ORC power generation system and the characteristics of the software Aspen EDR, a new simulation calculation method is proposed: structural simulation calculation method. The calculation method and the direct simulation calculation method are used to carry out simulation comparison to find out the regularity of the change of waste heat resources, and it is convenient to further analyze and control the ORC power generation system.
Modeling simulation and virtual platform construction of crossbow making technology
Authors: Wen Cong , Xu Wu , Tang Wenquan , Guo Xing , Zhou Bing
Published: December 2019

In this paper, a set of virtual simulation platform for crossbow making is established. First, build a virtual model of Lisu crossbow, optimize the model, accelerate the organization, model generation, modification and editing of the database; then complete the database establishment of the corresponding model, nest the comment entity class and filemeta entity class into the file entity class, store them in a nested data set, and complete the data storage, management and query operations; finally, combined with Kalman filtering, arithmetic average filtering and KNN algorithm are used to build the quest 3D virtual platform to improve the 3D interaction effect with data gloves and complete the construction of the 3D platform.
Study on Environment Friendly Descaling and Formation Unblocking Technique for Injection Wells
Authors: yu Yan , yang Yang , shuzhao Guo , qingqin Cai , qinghua Li
Published: December 2019

Corrosion and scale formation of near well-bore zone are common reasons that affect the effectiveness of injection wells. Although conventional stimulation treatments can remove the blockage, many disadvantages occur such as short-term effectiveness, long occupation period, large amount of waste fluid, big environmental impact and limited transportation procurement. In this paper, an environment friendly descaling and formation unblocking technique was found which includes two kinds of treatments. One is called neutral descaling, anti-swelling, liquid circulation cleaning technique(NALC) and the other is called slow release anti-scaling solid acid treatment(SASA). The environment impacts of well stimulation treatments are significantly reduced which would meet the requirements of the “Green Mine” needs.
Assessment of Streamflow Regime Alterations in Tang River, China
Authors: Sun Yingshan , Liu Qiang , Yuan Xiaomin , Yan Sirui
Published: December 2019

The biodiversity and integrity of river ecosystems are depending on the natural streamflow regime. Therefore, assessing alteration of hydrologic regimes becomes a fundamental step in river ecosystem protection and restoration. In this paper, the Range of Variability Approach (RVA) was used to analyze the alteration hydrologic regimes from 1959 to 2016 in the Tang River, the upstream of Baiyangdian Lake Basin, China. Several results can be drawn: (i) annual streamflow presented a decreasing trend, and an abrupt change was detected in 1979; (ii) the significant changed indicators of hydrologic variation in upstream of Baiyangdian Lake Basin were the monthly streamflow in March, April, August, November, time of 3-day and 90-day maximum streamflow, date of maximum streamflow occurrence, rise rate and number of reversals; and (iii) monthly water should be restored in flood and delivered in non-flood season, and annual extreme streamflow frequency and duration of high and low streamflow also should be regulated to maintain the streamflow regimes in the Tang River Basin, China. The results will help to provide the suitable ecological streamflow and maintain the integrity of river ecosystem in changing environment.
Design of Learning Software Based on GPS Mobile Terminal
Authors: Hongwei Qin , Wenquan Ma , Huaxiao Ding , Yi You
Published: December 2019

The GPS-based mobile terminals provide available hardware for online learning. Some learning software can be applied on the GPS-based mobile terminals to help people learn at any place and any time. The data in the software is properly managed and intelligently processed to help the users including online learning and communication with people of the same interests. The software can be designed with a user-friendly interface. In this study, we briefly discuss the main functions of the designed learning software including on-line learning, data management and data association. In addition, the basic structure and procedure of the learning software is explained with a three-stage steps of login, learning, and communication. With the help of the designed learning software on the GPS mobile terminals, the overall learning efficiency and effectiveness can be improved.