Beijing University of Civil Engineering and Architecture

www.bucea.edu.cn/
Beijing, China

Beijing University of Civil Engineering and Architecture is a university in Beijing, China. Established in 1936. It is maintained by the Beijing municipal government. Wikipedia.

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Patent
Beijing University of Civil Engineering and Architecture | Date: 2016-12-01

The Invention discloses a self-supplied hydrogen fuel cell system and a working method thereof, the system comprising a diesel tank, a gas separator, a fuel cell, a low-temperature separation reactor, a high-temperature separation reactor, an auto-thermal reformer, a water tank and a catalytic burner; With the high-temperature separation reactor, the low-temperature separation reactor and the auto-thermal reformer, diesel is cracked into H_(2 )and CO; as the fuel for the fuel cell, H_(2 )may react with O_(2 )in the air and generate electric energy; the unreacted H_(2 )and CO enter into the catalytic burner for combustion, ensuring that the water is heated; thus, it not only provides H_(2 )to the fuel cell, but also provides high-temperature water to the auto-thermal converter to produce H_(2); electric energy can be generated without burning diesel; since no NO_(x )or particulate matters but CO_(2 )is generated, the goal of ultra-low emission is achieved.


Liu Y.-F.,Beijing University of Civil Engineering and Architecture | Kang X.-W.,University of Murcia
Journal of Physics: Conference Series | Year: 2016

Searching for the New Physics (NP) phenomenon beyond Standard Model (SM) is still a main focus in particle physics. Here we propose to search for Λ - oscillation in the decay J/ψ → ΛAA using BES detector. With one-year luminosity at BESIII, we can put a constraint that the Λ - oscillation mass is smaller than 10-15 MeV at 90% confidence level, corresponding to the oscillation time of 10-6 second around, in case of non-observation of any signals. These measurements should provide very precious informations besides the neutron oscillation experiment. Also it would be the first-time access by experiment for Λ - oscillation. © Published under licence by IOP Publishing Ltd.


News Article | February 21, 2017
Site: www.businesswire.com

HONG KONG--(BUSINESS WIRE)--Beijing Gas Blue Sky Holdings Limited (“the Company” or “Beijing Gas Blue Sky”, together with its subsidiaries, the “Group”, HKSE stock code: 6828) is pleased to announce that, Mr. Li Weiqi has been appointed as an executive director of the Company and a vice president of the Group; and Mr. Pang Siu Yin has been appointed as an independent non-executive director of the Company, with immediate effect. Mr. Li Weiqi, aged 42, obtained a Bachelor degree of City Gas Engineering from Beijing Construction Engineering College (now Beijing University of Civil Engineering and Architecture) in 1998. Mr. Li has over 18 years of experience in gas design, strategic planning, infrastructure investment and market development. Prior to joining the Company, Mr. Li served as the deputy manager of planning and development of Beijing Gas Group from 2011 to 2016. Mr. Li also held various positions of designer, consultant, business manager and deputy head of marketing in Beijing Gas and Heating Engineering Design Institute for 11 years. Mr. Pang Siu Yin, aged 57, graduated from the University of Leeds with a bachelor of laws degree, obtained a master of business administration degree from the University of Aston, as well as a postgraduate certificate in laws from the University of Hong Kong respectively. Mr. Pang has been a practising solicitor of the high court of Hong Kong since 1990 and was also admitted as a solicitor in England and Wales in 1997. He is currently a partner of LCP, a firm of solicitors in Hong Kong, with his practice focusing on commercial and litigation. Mr. Pang was appointed as an independent non-executive director of Winto Group (Holdings) Limited (stock code: 8238) on 24 July 2015 and an independent non-executive director of Man Sang Jewellery Holdings Limited (stock code: 1466) on 19 November 2016. Mr. Tommy Cheng, Co-Chairman and Executive Director of the Group states that “We are pleased to invite Mr. Li and Mr. Pang as our Board member. Both of them have extensive experience and achieve outstanding performance in related industry. Prior to joining the Company, Mr. Li developed his career in Beijing Gas Group, which is our single largest shareholder since 2016. We believe that the joining of Mr. Li and Mr. Pang will be definitely beneficial to the Group’s development. We are looking forward to working with them closely to further enhance the level of corporate governance of the Group, as well as to promote the Group's business development in the future.” Beijing Gas Blue Sky Holdings Limited (“Beijing Gas Blue Sky”, HKSE stock code: 6828) is an integrated natural gas provider, distributor and operator, with an emphasis on the midstream and downstream natural gas development. Our natural gas business includes: (i) construction and operation of compressed natural gas (“CNG”) and liquefied natural gas (“LNG”) refueling stations for vehicles; (ii) construction of natural gas pipelines and operation of city gas projects by providing piped gas; (iii) direct supply of LNG to end-users; and (iv) trading and distribution of CNG and LNG. The Group has adapted to the “One Belt One Road” policy, and focus on operating and investing natural gas business. The Group is actively expanding its business development and distribution, as well as continues to gradually expanding the scale of operations. Currently, the Group has business presence in several provinces in Northeast China, East China, Central South China and Southwest China, including Liaoning Province, Shandong Province, Anhui Province, Zhejiang Province, Hubei Province, Guizhou Province, Sichuan Province and Hainan Province, etc. In the future, The Group is committed to its vision "develop clean energy, enhance customer value, create a beautiful blue sky". It will continue to actively investing and developing natural gas business, as well as participating in the development of natural gas industry value chain.


Li F.,Beijing University of Civil Engineering and Architecture
Optik | Year: 2017

The intensity and the orbital angular momentum density of an anomalous vortex beam beyond the paraxial approximation are studied. By using the vectorial angular spectrum method, analytical expressions of the electric field of the nonparaxial anomalous vortex beam are derived. Based on the expressions, an analytical expression of the orbital angular momentum density of the nonparaxial anomalous vortex beam is deduced. Through the numerical simulation method, the intensity distribution and orbital angular momentum density distribution characteristics are studied, and then the effects of topological charge, beam order, and propagation distance on the distributions of the intensity and orbital angular momentum density are analyzed. The results show that the intensity distribution of an nonparaxial anomalous vortex beam is similar to that of an paraxial anomalous vortex beam, while the orbital angular momentum density distribution is not. © 2017 Elsevier GmbH


Wang C.-C.,Beijing University of Civil Engineering and Architecture | Wang C.-C.,Beijing University of Chemical Technology | Li J.-R.,Beijing University of Chemical Technology | Lv X.-L.,Beijing University of Chemical Technology | And 2 more authors.
Energy and Environmental Science | Year: 2014

Efficient removal of organic pollutants from wastewater has become a hot research topic due to its ecological and environmental importance. Traditional water treatment methods such as adsorption, coagulation, and membrane separation suffer from high operating costs, and even generate secondary pollutants. Photocatalysis on semiconductor catalysts (TiO2, ZnO, Fe 2O3, CdS, GaP, and ZnS) has demonstrated efficiency in degrading a wide range of organic pollutants into biodegradable or less toxic organic compounds, as well as inorganic CO2, H2O, NO 3 -, PO4 3-, and halide ions. However, the difficult post-separation, easy agglomeration, and low solar energy conversion efficiency of these inorganic catalysts limit their large scale applications. Exploitation of new catalysts has been attracting great attention in the related research communities. In the past two decades, a class of newly-developed inorganic-organic hybrid porous materials, namely metal-organic frameworks (MOFs) has generated rapid development due to their versatile applications such as in catalysis and separation. Recent research has showed that these materials, acting as catalysts, are quite effective in the photocatalytic degradation of organic pollutants. This review highlights research progress in the application of MOFs in this area. The reported examples are collected and analyzed; and the reaction mechanism, the influence of various factors on the catalytic performance, the involved challenges, and the prospect are discussed and estimated. It is clear that MOFs have a bright future in photocatalysis for pollutant degradation. This journal is © the Partner Organisations 2014.


Patent
Beijing University of Civil Engineering, Architecture and Dalian University of Technology | Date: 2013-05-08

A combined finned tube anti-corrosion heat exchange device utilizing condensation heat of flue-gas belongs to the technical field of condensation heat transfer and metal anticorrosion. In view of the features that the corrosion of condensation heat exchanger mainly is electrochemical corrosion, large area of fins and more plating material consumed, and according to the principle of catholic protection and enhanced heat exchange, optimized combination of material and surface protection is actualized, the device consists of three types of combined anti-corrosion heat exchange devices. The first type includes an amorphous nickel copper phosphorus composite layer plated on a red copper finned base pipe, the fins are copper or aluminum alloy fins, and then an organic coating is applied as a whole. The second type to the device includes an amorphous nickel copper phosphorus composite layer plated on a brass finned base pipe, the fins are aluminum alloy fins, and then are applied with an organic coating as a whole. The third type of the device includes a cupronickel finned base pipe, and the fins are brass or aluminum alloy fins, and then are applied with an organic coating as a whole. The present invention gives full play to the greatest advantages of different materials and plated or coated layers with the features of low manufacturing cost, good heat transfer performance and anti-corrosion.


Zhang M.,Auburn University | He F.,Auburn University | Zhao D.,Auburn University | Hao X.,Beijing University of Civil Engineering and Architecture
Water Research | Year: 2011

Zero valent iron (ZVI) nanoparticles have been studied extensively for degradation of chlorinated solvents in the aqueous phase, and have been tested for in-situ remediation of contaminated soil and groundwater. However, little is known about its effectiveness for degrading soil-sorbed contaminants. This work studied reductive dechlorination of trichloroethylene (TCE) sorbed in two model soils (a potting soil and Smith Farm soil) using carboxymethyl cellulose (CMC) stabilized Fe-Pd bimetallic nanoparticles. Effects of sorption, surfactants and dissolved organic matter (DOC) were determined through batch kinetic experiments. While the nanoparticles can effectively degrade soil-sorbed TCE, the TCE degradation rate was strongly limited by desorption kinetics, especially for the potting soil which has a higher organic matter content of 8.2%. Under otherwise identical conditions, ~44% of TCE sorbed in the potting soil was degraded in 30 h, compared to ~82% for Smith Farm soil (organic matter content = 0.7%). DOC from the potting soil was found to inhibit TCE degradation. The presence of the extracted SOM at 40 ppm and 350 ppm as TOC reduced the degradation rate by 34% and 67%, respectively. Four prototype surfactants were tested for their effects on TCE desorption and degradation rates, including two anionic surfactants known as SDS (sodium dodecyl sulfate) and SDBS (sodium dodecyl benzene sulfonate), a cationic surfactant hexadecyltrimethylammonium (HDTMA) bromide, and a non-ionic surfactant Tween 80. All four surfactants were observed to enhance TCE desorption at concentrations below or above the critical micelle concentration (cmc), with the anionic surfactant SDS being most effective. Based on the pseudo-first-order reaction rate law, the presence of 1×cmc SDS increased the reaction rate by a factor of 2.5 when the nanoparticles were used for degrading TCE in a water solution. SDS was effective for enhancing degradation of TCE sorbed in Smith Farm soil, the presence of SDS at sub-cmc increased TCE degraded by ~10%. However, effect of SDS on degradation of TCE in the potting soil was more complex. The presence of SDS at sub-cmc decreased TCE degradation by 5%, but increased degradation by 5% when SDS dosage was raised to 5×cmc. The opposing effects were attributed to combined effects of SDS on TCE desorption and degradation, release of soil organic matter and nanoparticle aggregation. The findings strongly suggest that effect of soil sorption on the effectiveness of Fe-Pd nanoparticles must be taken into account in process design, and soil organic content plays an important role in the overall degradation rate and in the effectiveness of surfactant uses. © 2011 Elsevier Ltd.


Patent
Research Institute Of Highway Ministry Of Transport, Beijing University of Civil Engineering, Architecture and High-Tech | Date: 2016-02-17

This present invention discloses a waterborne polymer modified emulsified asphalt mixture and the preparation method thereof, and particularly relates to a waterborne polyurethane emulsified asphalt concrete, a waterborne acrylic resin emulsified asphalt concrete, and a waterborne epoxy resin emulsified asphalt micro-surfacing mixture, and preparation methods thereof. A mixture containing a waterborne polymer modified emulsified asphalt forms a high-performance composite system having a spatial network structure, and has good performance and simple preparation process.


Patent
Research Institute Of Highway Ministry Of Transport, Beijing University of Civil Engineering, Architecture and Zhonglu Hi Technology Beijing Highway Technology Co. | Date: 2015-08-11

This present invention discloses a waterborne polymer modified emulsified asphalt mixture and the preparation method thereof, and particularly relates to a waterborne polyurethane emulsified asphalt concrete, a waterborne acrylic resin emulsified asphalt concrete, and a waterborne epoxy resin emulsified asphalt micro-surfacing mixture, and preparation methods thereof. A mixture containing a waterborne polymer modified emulsified asphalt forms a high-performance composite system having a spatial network structure, and has good performance and simple preparation process.


He F.,Beijing University of Civil Engineering and Architecture
International Journal of Computational Fluid Dynamics | Year: 2013

In this paper, a fluid-wall interaction model, called the elastic tube model, is introduced to investigate wave propagation in an elastic tube and the effects of different parameters. The unsteady flow was assumed to be laminar, Newtonian and incompressible, and the vessel wall to be linear-elastic, isotropic and incompressible. A fluid-wall interaction scheme is constructed using a finite element method. The results demonstrate that the elastic tube plays an important role in wave propagation. It is shown that there is a time delay between the velocity waveforms at two different locations and that the peak velocity increases while the low velocity decreases in the elastic tube model, contrary to the rigid tube model where velocity waveforms overlap each other. Compared with the elastic tube model, the increase of the wall thickness makes wave propagation faster and the time delay cannot be observed clearly, however, the velocity amplitude is reduced slightly due to the decrease of the internal radius. The fluid-wall interaction model simulates wave propagation successfully and can be extended to study other mechanical properties considering complicated geometrical and material factors. © 2013 Copyright Taylor and Francis Group, LLC.

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