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Mathematical Advancement of General Chlorine Bulk Decay Model

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Journal of Harbin Institute of Technology(New Series) 2017年第4期24卷 9-17页

作者： shaoying qi Jinfeng Lu Department of Civil & Environmental Engineering University of Illinois at Urbana-Champaign College of Environmental Science and Engineering Nankai University Key Laboratory of Pollution Processes and Environmental Criteria (Nankai University) Ministry of Education

An accurate chlorine bulk decay model is needed to ensure that potable water meets the microbial and the chemical safeties at the treatment plant and throughout the distribution. Among the mathematical models available,the general second-order chlorine bulk decay model( GBDM) is the most fundamentally *** of the GBDM,however,has been hindered by its numerous fictive parameters and lack of an analytical solution. This theoretical work removes the two obstacles. The GBDM is solved through transformation and integration. The analytical solution provides deep insights into the GBDM and facilitates the parameterization and sensitivity analysis. The background natural organic matter( NOM) is characterized with the probabilistic distribution of functional groups. It reveals that the mean of the function group distribution is correlated with the initial chlorine decay rate coefficient( κ_0). A simple formula is developed to determine κ_0 directly from the initial chlorine decay. The theoretical treatment reduces the fictive parameters to a minimum. For the common lognormal distribution,the GBDM needs only three parameters,well defined as initial chlorine demand X_0,median rate coefficient km,and heterogeneity index σ. For more complicated scenarios,composite distributions are constructed through superposition of individual distributions. A highlighted example is to predict chlorine decay in blends of different waters. With the theoretical and mathematical advancement here,the GBDM can be applied effectively to any reactive background matter in any reaction systems.

关键词： chlorine residual potable water natural organic matter decay model

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腔内激光联合戴戒术治疗下肢深静脉功能不全

陕西医学杂志 2005年第2期34卷 169-171页

作者：禄韶英祁光裕孙学军黄新天西安交通大学第一医院普外科西安710061 上海第二医科大学附属第九人民医院血管外科

目的 :评价传统手术联合应用 DIOMED81 0 nm激光治疗下肢深静脉瓣膜功能不全的疗效。方法 :2 4例病人 (男 1 8,女 6) ,共 35条肢体 ,分别采用单纯激光治疗、股静脉瓣膜包窄术和交通静脉结扎等不同手术方式治疗 ,术后对病人进行随访观察 ... 详细信息

目的 :评价传统手术联合应用 DIOMED81 0 nm激光治疗下肢深静脉瓣膜功能不全的疗效。方法 :2 4例病人 (男 1 8,女 6) ,共 35条肢体 ,分别采用单纯激光治疗、股静脉瓣膜包窄术和交通静脉结扎等不同手术方式治疗 ,术后对病人进行随访观察 ,对临床资料整理分析。结果 :大部分病人于术后早期发现有沿大隐静脉走行的条索状硬结或曲张静脉处血栓样结节现象 ,一般于 4～ 8周内逐渐消退。 2例病人有足靴区溃疡均在治疗后 2～ 4周内迅速愈合 ;术后两周复查彩超 ,大隐静脉主干完全闭塞。平均住院日 6( 3～ 1 5 ) d。结论 :静脉腔内激光联合戴戒术治疗下肢深静脉瓣膜功能不全 ,近期疗效可靠、创伤小、瘢痕少操作简便、安全。

关键词：治疗病人戴戒术腔内联合下肢深静脉功能不全大隐静脉结论一般现象

溶剂对柠檬酸络合燃烧法制备的CuO-CeO_2催化剂催化氧化碳烟的影响

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工业催化 2010年第6期17卷 57-62页

作者：齐绍英黄碧纯付名利叶代启华南理工大学环境科学与工程学院广东广州510006

分别用无水乙醇和水作溶剂的柠檬酸络合燃烧法制备催化剂Cu_(0.05)Ce_(0.95)-A和Cu_(0.05)Ce_(0.95)-W,使用程序升温氧化法(TPO)评价催化剂对碳烟的氧化活性,通过X射线衍射(XRD)和傅立叶红外光谱(FTIR)对催化剂进行表征,并采用程序升温... 详细信息

分别用无水乙醇和水作溶剂的柠檬酸络合燃烧法制备催化剂Cu_(0.05)Ce_(0.95)-A和Cu_(0.05)Ce_(0.95)-W,使用程序升温氧化法(TPO)评价催化剂对碳烟的氧化活性,通过X射线衍射(XRD)和傅立叶红外光谱(FTIR)对催化剂进行表征,并采用程序升温还原(H_2-TPR)和程序升温脱附(O_2-TPD)测试催化剂的储氧性能和供氧能力。结果表明,Cu_(0.05)Ce_(0.95)-A与Cu_(0.05)Ce_(0.95)-W的晶体结构相同,均形成了Cu-Ce-O固溶体,但仅在Cu_(0.05)Ce_(0.95)-A表面发现高度分散的CuO。Cu_(0.05)Ce_(0.95)-W具有较好的储氧能力,对碳烟的氧化活性较高。

关键词：催化化学 CuO—CeO2催化剂碳烟无水乙醇柠檬酸络合燃烧

A venom protein of ectoparasitoid Pachycrepoideus vindemiae, PvG6PDH, contributes to parasitism by inhibiting host glucose-6-phosphate metabolism

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Insect Science 2022年第2期29卷 399-410页

作者： Lei Yang Liming qiu qi Fang shaoying Wu Gongyin Ye Hainan University Haikou570228 China State Key Laboratory of Rice Biology&Ministry of Agricultural and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Insect SciencesZhejiang UniversityHangzhou310058 China

To achieve successful development,female parasitoids,while laying eggs,introduce various virulence factors,mainly venoms,into host insects to manipulate their *** numerous studies have been conducted to characterize the components of venoms that regulate host immune responses,few systematic investigations have been conducted on the roles of venom proteins in host metabolic *** this investigation,we characterized a novel venom protein in Pachycrepoideus vindemiae called glucose-6-phosphate dehydrogenase(PvG6PDH)and showed it has a vital role in regulating host carbohydrate ***6PDH encodes 510 amino acids and features a signal peptide and two conserved“G6PDH”*** sequence alignment showed it has high amino acid identity with G6PDH from other pteromalids,and quantitative polymerase chain reaction analysis and immunofluorescent staining demonstrated a significantly higher expression of PvG6PDH in the venom apparatus compared with the *** report that PvG6PDH contributes to parasitism by inhibiting the glucose-6-phosphate(G6P)metabolism of host Drosophila melanogaster,as demonstrated by PvG6PDH injection and RNA interference *** tests revealed that the accumulation of host G6P was caused by the transcriptional inhibition of G6P-metabolism-related *** findings greatly contribute to our understanding of venom-mediated host metabolic regulation,further laying the foundation for the development of venom proteins as biological agents for pest control.

关键词： biological control metabolism Pachycrepoideus vindemiae parasitoid venom

SPHERICAL SYMMETRIC SOLUTIONS FOR THE MOTION OF RELATIVISTIC MEMBRANES AND NULL MEMBRANES IN THE REISSNER-NORDSTRM SPACE-TIME

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Acta Mathematica Scientia 2014年第3期34卷 917-931页

作者：罗少盈刘琦 Department of Mathematics Zhejiang University

In this article, we concern the motion of relativistic membranes and null mem- branes in the Reissner-Nordstrom space-time. The equation of relativistic membranes moving in the Reissner-Nordstrom space-time is derived and some properties are discussed. Spherical symmetric solutions for the motion are illustrated and some interesting physical phenomena are discovered. The equations of the null membranes are derived and the exact solutions are also given. Spherical symmetric solutions for null membranes are just the two horizons of Reissner-NordstrSm space-time.

关键词： Reissner-Nordstrom space-time nonlinear wave equation spherical symmetric solution null-membrane horizon

Elemental sulfur in northern South China Sea sediments and its significance

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Science China Earth Sciences 2015年第11期58卷 2271-2278页

作者： LIN qi WANG JiaSheng FU shaoying LU HongFeng BU qingTao LIN RongXiao SUN Fei State Key Laboratory of Biogeology and Environmental Geology School of Earth Science China University of Geosciences Guangzhou Marine Geological Survey qingdao Institute of Marine Geology

Elemental sulfur(ES) is one of the intermediates in the inorganic sulfur cycle and thus plays a key role in the fractionation of stable sulfur isotopes in different reservoirs and the marine environment. In this study, solid ES is discovered in sediments near the Jiulong Methane Reef in the northern South China Sea by scanning electron microscopy and Raman spectroscopy. Combining the morphology and distribution of ES, pyrite concentrations, and sulfur isotopes, we conclude that:(1) solid ES coexists with pyrite microcrystals and sulfide(oxyhydr)oxides as well as clay minerals, and they are mainly distributed on the surface of mineral aggregates;(2) ES mainly occurs within and near the sulfate-methane transition zone(SMTZ) despite little morphological diversity;(3) ES formation might be related to hydrogen sulfide oxidation and is therefore linked with fluctuations in the SMTZ. Within the SMTZ, hydrogen sulfide is produced and pyrite precipitates because of enhanced anaerobic oxidation of methane coupled with dissimilatory sulfate reduction. This enhances the efficiency of the inorganic sulfur cycle and provides favorable conditions for ES formation. The discovery of solid ES in sediments near the Jiulong Methane Reef suggests an important relationship with SMTZ fluctuations that could have implications for the evolution of methane hydrate in the South China Sea.

关键词： elemental sulfur sulfate-methane transition zone shallow sediments northern South China Sea

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产学研联盟关系品质影响因素实证研究

科技进步与对策 2016年第3期33卷 12-17页

作者：朱少英齐二石山西大同大学商学院山西大同037009 天津大学管理与经济学部天津300072

在西方关系联结理论基础上,引入中国社会特有的"关系"变量,构建了包括西方关系变量、中国本土关系变量和信任在内的产学研联盟关系品质影响因素结构方程模型,并利用117份有效样本数据,对所建立的理论模型进行了实证检验。结果表明:西方... 详细信息

在西方关系联结理论基础上,引入中国社会特有的"关系"变量,构建了包括西方关系变量、中国本土关系变量和信任在内的产学研联盟关系品质影响因素结构方程模型,并利用117份有效样本数据,对所建立的理论模型进行了实证检验。结果表明:西方关系联结中的社会性联结与结构性联结对信任有显著正影响,但功能性联结对信任影响不显著;中国社会关系网络中的情感性关系与工具性关系对信任有显著正影响,其中,工具性关系影响效果较大;信任对产学研联盟伙伴间关系品质有显著正影响。

关键词：关系品质社会关系网络产学研联盟

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团队领导者行为与知识共享关系的实证研究

科学管理研究 2008年第2期26卷 68-71页

作者：朱少英齐二石天津大学管理学院

利用皮尔森相关分析及分层回归分析方法,研究了项目团队的领导行为与知识共享的相关性。实发问卷150份,回收120份,有效问卷110份。结果发现:当团队领导者的行为是奖惩分明,则会使得团队成员较愿意进行知识共享;当团队领导者对下属采取... 详细信息

利用皮尔森相关分析及分层回归分析方法,研究了项目团队的领导行为与知识共享的相关性。实发问卷150份,回收120份,有效问卷110份。结果发现:当团队领导者的行为是奖惩分明,则会使得团队成员较愿意进行知识共享;当团队领导者对下属采取工作导向及人际导向时,也会提高团队成员的知识共享程度。

关键词：知识共享交易型领导转换型领导实证研究

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技术联盟合作创新的信誉机制研究

科学管理研究 2008年第1期26卷 5-8页

作者：朱少英齐二石天津大学管理学院天津300072

从技术联盟成员之间合作的博弈关系角度,构建了技术联盟成员合作创新的信誉模型,研究了信誉对技术联盟成员的激励效应,以及信誉与联盟治理绩效之间的关系。得出的基本结论是:在完善的技术创新市场环境中,信誉是技术联盟成员合作创新的... 详细信息

从技术联盟成员之间合作的博弈关系角度,构建了技术联盟成员合作创新的信誉模型,研究了信誉对技术联盟成员的激励效应,以及信誉与联盟治理绩效之间的关系。得出的基本结论是:在完善的技术创新市场环境中,信誉是技术联盟成员合作创新的重要治理机制,在信誉激励下,技术联盟成员之间合作创新是有效率的。在此基础上,给出了基于信誉机制的技术联盟治理建议。

关键词：技术联盟合作创新信誉模型