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The Heat Transfer Coefficients of the Heating Surface of 300 MWe CFB Boiler

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Journal of Thermal Science 2012年第4期21卷 368-376页

作者： wu haibo ZHANG Man LU Qinggang SUN Yunkai Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100190China . Graduate University of Chinese Academy of Sciences Beijing 100049China

A study of the heat transfer about the heating surface of three commercial 300 MWe CFB boilers was conducted in this work. The heat transfer coefficients of the platen heating surface, the external heat exchanger (EHE) and cyclone separator were calculated according to the relative operation data at different boiler loads. Moreover, the heat transfer coefficient of the waterwall was calculated by heat balance of the hot circuit of the CFB boiler. With the boiler capacity increasing, the heat transfer coefficients of these heating surface increases, and the heat transfer coefficient of the water wall is higher than that of the platen heating surface. The heat transfer coefficient of the EHE is the highest in high boiler load, the heat transfer coefficient of the cyclone separator is the lowest. Because the fired coal is different from the design coal in No.1 boiler, the ash content of the fired coal is much lower than that of the design coal. The heat transfer coefficients which calculated with the operation data are lower than the previous design value and that is the reason why the bed temperature is rather high during the boiler operation in No.1 boiler.

关键词： CFB boiler heating surface heat transfer coefficient calculation

Experimental Study on Oxy-Fuel Combustion and NO Emission in a Spouted-Fluidized Bed with under Bed Feeding

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Journal of Thermal Science 2021年第4期30卷 1132-1140页

作者： XU Mingxin wu Yachang wu haibo OUYANG Haodong ZHENG Shu LU Qiang National Engineering Laboratory for Biomass Power Generation Equipment North China Electric Power UniversityBeijing 102206China Shenhua Guohua Electric Power Research Institute(Beijing)Co. Ltd.Beijing 100025China

The spouted-fluidized bed is modified from the classical fluidized bed device,which combines the features of spouted and fluidized *** the present work,the performance of oxy-fuel spouted-fluidized bed combustion with under bed feeding and its effect on NO emission were systematically *** results revealed that it was feasible to use a spouted-fluidized bed combustor for oxy-fuel combustion with real flue gas *** transition from air combustion to oxy-fuel combustion was smooth and the concentration of CO_(2) in the flue gas could be as high as 90%steadily(dry base).Increasing the reaction temperature exhibited a negative effect on NO *** with that under the shallow bed,the concentration of NO in the flue gas was lower under the deep bed ***,the utilization of crush particles was favorable for suppressing NO emission because of the promoted mixing between coal particles and solid bed ***,the addition of limestone was proven to undesirably increase the NO emission during oxy-fuel spouted-fluidized bed combustion.

关键词： spouted-fluidized bed oxy-fuel combustion transition NO emission bed materials limestone

Investigation of Peptoid Chiral Stationary Phases Terminated with N＇-Substituted PhenyI-L-proline/leucine Amide

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Chinese Journal of Chemistry 2012年第12期30卷 2791-2797页

作者： wu haibo Song Guangjun Liang Xinmiao Ke Yanxiong School of Pharmacy East China University of Science and Technology Shanghai 200237 China Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China

Eight peptoid chiral stationary phases （CSPs） terminated with N＇substituted phenyl-L-proline or L-leucine amide were prepared and evaluated under normal phase mode. With 59 racemic analytes, we compared the enantio- meric separations on CSPs terminated with p-methylphenyl, p-chlorophenyl and unsubstituted phenyl. For short peptoid selectors containing only one S-N-（1-phenylethyl） glycine （Nspe） unit, the terminal p-methyl substituent did not affect chiral recognition abilities significantly. In L-proline amide terminated CSPs, p-chloro substituent resulted in obviously inferior selectivity while in L-leucine amide terminated CSPs, it worked much better. Longer peptoid selectors containing two more Nspe units generally performed much better than the shorter ones, due to the great contributions of peptoid chain to chiral recognition. Meanwhile, the effects of the terminal substituent on selectivity were found changed on these CSPs. For CSPs terminated with L-leucine amide, the terminal p-chloro substituent in longer selector no longer produced the best recognition ability; the CSP with unsubstituted phenyl instead performed best. Comparison of these peptoid CSPs varied in terminal substituents and chain length was conducted to gain a better understanding of the chiral recognition mechanism of this type CSP and promote the development of more useful CSPs.

关键词： chiral stationary phase peptoid enantiomeric separation proline amide leucine amide

Application-aware routing with QoS support in SDN networks

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High Technology Letters 2016年第4期22卷 404-411页

作者：张泽鑫 Li Jun wu haibo Computer Network Information Center Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

Software defined networking( SDN) offers programmable interface to effectively control their networks by decoupling control and data plane. The network operators utilize a centralized controller to deploy advanced network management strategies. An architecture for application-aware routing which can support dynamic quality of service( Qo S) in SDN networks is proposed. The applicationaware routing as a multi-constrained optimal path( MCOP) problem is proposed,where applications are treated as Qo S flow and best-effort flows. With the SDN controller applications,it is able to dynamically lead routing decisions based on application characteristics and requirements,leading to a better overall user experience and higher utilization of network resources. The simulation results show that the improvement of application-aware routing framework on discovering appropriate routes,which can provide Qo S guarantees for a specific application in SDN networks.

关键词： application aware software defined networking(SDN) networks quality of service(Qo S) multiple constraints path selection

Experimental study on dynamic elastic parameters of coal samples

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International Journal of Mining Science and Technology 2015年第3期25卷 447-452页

作者： wu haibo Dong Shouhua Li Donghui Huang Yaping Qi Xuemei School of Resources and Geosciences China University of Mining & Technology School of Safety Science and Engineering Henan Polytechnic University

Dynamic elastic parameters of coal are closely linked to crack characteristics and are lithology indicators in seismic exploration. This experimental study measured ultrasonic wave velocity of coal samples considering both parallel(90°) and perpendicular(0°) to bedding planes, and then calculated the dynamic elastic parameters(Edand ld) and their anisotropy values(AEdand Ald). The variations of Edand ld,as well as AEdand Aldwere analyzed under various confining stresses. The results show that: Firstly, a critical confining pressure exists, and significant variation in the parameters can be seen below this point and weak variation appears above it. Secondly, a positive correlation exists between Edand the square of P-wave velocity(VP2), and between AEdand the P-wave velocity anisotropy(AEP) as well; however, there is no clear correlation between ldand P-wave velocity(VP). Thirdly, according to the major controlling factors of anisotropy, the coal samples with different Edand ldas well as AEdand Aldcan be divided into two types: one is mainly controlled by bedding and cracks and the other one is mainly controlled by differences of mineral compositions in directions. Consequently, this study can provide theoretical basis for future research on the dynamic elastic parameters and anisotropy of coal.

关键词： Confining pressure P-wave velocity Dynamic Young's modulus Dynamic Poisson's ratio Anisotropy

Training the old dog new tricks: the applications of the Biginelli reaction in polymer chemistry

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Science China Chemistry 2016年第12期59卷 1541-1547页

作者： Yuan Zhao haibo wu Zilin Wang Yen Wei Zhiming Wang Lei Tao Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology(Ministry of Education) Department of ChemistryTsinghua University School of Petrochemical Engineering Changzhou University

Recently, the Biginelli reaction, one of the most famous multicomponent reactions, has been introduced into the polymer chemistry to highly efficiently synthesize some interesting functional polymers. In this mini-review, several applications of the Biginelli reaction in polymer chemistry have been summarized, including polycondensation, post-polymerization modification,one-pot synthesis of well-defined polymer, etc. Meanwhile, the utilization of the Biginelli reaction in material science and chemical biology, and the future development of the Biginelli reaction in polymer chemistry have also been discussed.

关键词： Biginelli reaction functional polymer synthesis polycondensation

产教融合视角下的新派桂式家具研发与实践——以吴海波《壮牛》系列家具设计为例

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家具与室内装饰 2021年第4期28卷 139-142页

作者：吴海波广西机电职业技术学院艺术设计系广西南宁530007

产教融合是当下国内高职院校提高人才培养质量行之有效的重要举措,文章主要以民族工艺(桂作家具)传承创新职业教育基地建设成果《壮牛》系列家具产品研发设计实践为例,从桂式家具历史溯源、新派桂式家具品牌概念和新派桂式家具设计方法... 详细信息

产教融合是当下国内高职院校提高人才培养质量行之有效的重要举措,文章主要以民族工艺(桂作家具)传承创新职业教育基地建设成果《壮牛》系列家具产品研发设计实践为例,从桂式家具历史溯源、新派桂式家具品牌概念和新派桂式家具设计方法三个方面探讨产教融合视角下的民族区域家具文化技艺传承创新的思路和途径,为打造广西本土家具品牌文化提供理论和技术借鉴。

关键词：产教融合桂式家具家具设计

Experimental study on NO_(x)emission characteristics under oxy-fuel combustion

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Clean Energy 2023年第3期7卷 595-601页

作者： haibo wu Zhiyong An Kai Zhang Yu Mao Zhimin Zheng Zhaohui Liu Tianjin Guoneng Panshan Power Generation Co. LtdTianjin301907China China Energy Investment Corporation Beijing100011China Dongfang Boiler(Group)Co. Ltd.Zigong643001China Anhui University of Technology MaanshanAnhui243099China Huazhong University of Science and Technology WuhanHubei430074China

This study focuses on the emission characteristics of NO_(x)under oxy-fuel combustion conditions.A comparative analysis with air combustion was ***_(x)emission,control measures and influence factors under different working conditions were *** were carried out on a 3-MWth test platform and a laboratory ***‘π’-type furnace was adopted,with the fur-nace width of 2.6 m,depth of 2.0 m and height of 10.5 m for the 3-MWth coal-fired ***_(x)emissions at different oxygen concen-trations and different air distribution were investigated;the effects of H2O and CO_(2)concentration on denitrification efficiency and SO_(2)/SO_(3)conversion rate were *** results suggest that,compared with air combustion,NO concentration(volume basis)at the furnace outlet under oxy-fuel combustion is higher than that of air combustion,but the amount of NO_(x)emissions in the discharged gas significantly decrease compared to the air combustion *** addition,the formation of NO_(x)can be effectively controlled through staged ***,the selective catalytic reduction(SCR)denitrification efficiency and the con-version rate of SO_(2)to SO_(3)decreases when the CO_(2)concentration and the H2O content increase,indicating that CO_(2)and H2O have an adverse effect on the performance of the ***,compared with CO_(2)concentration,H2O content has a greater effect on catalyst performance.

关键词： experimental research NO_(x) oxy-fuel combustion SO_(2)/SO_(3)

ATM Activation is Key in Vasculogenic Mimicry Formation by Glioma Stem-like Cells

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Biomedical and Environmental Sciences 2024年第8期37卷 834-849页

作者： Jing Xie Jiaxin Tang Yuan Li Xue Kong Wei Wang haibo wu Department of Pathology the First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230036AnhuiChina Intelligent Pathology Institute Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230036AnhuiChina

Objective Vasculogenic mimicry(VM)is a novel vasculogenic process integral to glioma stem cells(GSCs)in glioblastoma(GBM).However,the relationship between VM and ataxia-telangiectasia mutated(ATM)serine/threonine kinase activation,which confers chemoradiotherapy resistance,remains *** We investigated VM formation and phosphorylated ATM(pATM)levels by CD31/GFAPperiodic acid-Schiff dual staining and immunohistochemical staining in 145 GBM *** stem-like cells(GSLCs)derived from the formatted spheres of U87 and U251 cell lines and their pATM level and VM formation ability were examined using western blot and three-dimensional *** the examination of the function of pATM in VM formation by GSLCs,ATM knockdown by shRNAs and deactivated via ATM phosphorylation inhibitor KU55933 were *** VM and high pATM expression occurred in 38.5% and 41.8% of tumors,respectively,and were significantly associated with reduced progression-free and overall *** with VM-positive GBMs exhibited higher pATM levels(r_(s)=0.425,P=0.01).The multivariate analysis established VM as an independent negative prognostic factor(P=0.002).Furthermore,GSLCs expressed high levels of pATM and formed vascular-like networks in *** inactivation or knockdown hindered VM-like network formation concomitant with the downregulation of pVEGFR-2,VE-cadherin,and laminin *** VM may predict a poor GBM prognosis and is associated with pATM *** propose that pATM promotes VM through extracellular matrix modulation and VE-Cadherin/pVEGFR-2 activation,thereby highlighting ATM activation as a potential target for enhancing anti-angiogenesis therapies for GBM.

关键词： Glioblastoma Vasculogenic mimicry Ataxia-telangiectasia mutated(ATM) Glioma stem-like cell