oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 516 )

2018 ( 11503 )

2017 ( 11495 )

2016 ( 12037 )

Custom range...

Search Results: 1 - 10 of 575760 matches for " 王超胜<br>LIU Jing "
All listed articles are free for downloading (OA Articles)
Page 1 /575760
Display every page Item
考虑零售商公平关切和风险规避的绿色供应链最优决策
Optimal decision-making for green supply chain considering retailers fairness concern and risk aversion

刘京,周岩,郑英杰,<br>LIU Jing, ZHOU Yan, ZHENG Ying-jie, WANG Chao-sheng
- , 2018, DOI: 10.6040/j.issn.1671-9352.0.2017.268
Abstract: 摘要: 为研究随机市场需求的绿色供应链问题,分别在零售商只考虑公平关切、只考虑风险规避及同时考虑公平关切和风险规避情形下, 建立绿色供应链博弈模型,研究了零售商的公平关切行为以及风险规避行为对绿色供应链最优决策的影响。研究结果表明: 与公平中性和风险中性时最优决策相比,零售商的公平关切行为、风险规避行为都会影响绿色供应链最优决策,且随着零售商公平关切和风险规避程度的增大,绿色产品最优批发价格、绿色度水平、零售价格、 绿色供应链各决策者期望利润及整体期望利润的变化都有规律性,在不同的产品绿色化效率下,存在着不同的变化趋势。
Abstract: To study the problem of a green supply chain with uncertain demand, the game models of the green supply chain considering only retailers fairness concern, only retailers risk aversion and both fairness concern and risk aversion were constructed. The impact of retailers fairness concern and risk aversion on the optimal decisions of manufacturer and retailer as well as the overall optimal decisions of the green supply chain are studied. The results show that retailers fair concerns and risk aversion influent the optimal decisions of the green supply chain comparing with those of fair neutral and risk neutral retail. The optimal decisions, expected profits and overall profit of the green supply chain change accordingly to the degree of retailers fairness concern and risk aversion, and the trends under the various green efficiency are different
Spatial Variation of Heavy Metals Contamination in the Soil and Vegetables of Huludao City
葫芦岛市土壤、蔬菜重金属污染空间变化规律

ZHENG N,WANG Qi-chao,LIU Jing-shuang,WANG Yang,ZHANG Zhong-sheng,<br>郑娜,,刘景双,,张仲
环境科学 , 2009,
Abstract: Hg, Pb, Cd, Zn, and Cu concentrations in the soil, vegetables and crop of Huludao city were investigated. The Hg, Pb, Cd, Zn, and Cu concentrations in soils of the smelting areas are 1.422, 443.1, 60.94, 4 084, and 247.8 mg·kg-1, thus 6.092, 3 195, 341.7, 35 157, and 1 557 mg·kg-1 for the maximal concentrations, respectively. Spatial distribution maps of heavy metals concentrations in top soils in Huludao City were separately laid out by using Kriging. Heavy metals spatial distribution patterns in soils show that Pb, Cd, Zn, Cu emissions from Huludao Zinc Plant are the main pollution sources of heavy metals to the top soils in Huludao City, but Hg emission from Huludao Zinc Plant and chlor-alkali industry is the main pollution source of mercury to the top soils. Heavy metals concentrations in top soils decrease exponentially with distance from the zinc smelting area. Except Hg, the exponential equation could be better to fit the variety for other heavy metals. Heavy metals in vegetable and crop cultivated around Huludao Zinc Plant are higher than from markets, suggests that heavy metals affect the local soil and crops seriously.
Mechanisms of phosphorus removal from reclaimed water in a simulated wetland buffer zone enhanced with red mud
赤泥强化型岸边缓冲带模拟系统对再生水中磷净化机理初探

LIU Ping,QIN Jing,WANG Chao,<br>刘平,秦晶,
环境科学学报 , 2011,
Abstract: Sintered red mud, with large specific surface area and many holes, is rich of Ca, Al and Fe oxides, which result in well adsorption capacity of phosphorus. Performance and mechanisms of the phosphorus removal of the reclaimed water was investigated by a lab-scale simulated buffer zone adding with different proportions of red mud. The results indicated that the optimum of phosphorus removal was reached at the adding range of 2.5%-5% of red mud, which the state of Al & Fe -P in substrate was transferred in the more stable state of Ca-P. However, the pH value of substrate rose with the increase of red mud adding,. At the 7.5% of adding red mud, the results of SEM/ESD showed that there were many particle materials found on the surface of the substrate, which may lead to the lower removal of phosphorus and whose composition is needed to be further studied.
Performance of Phosphorus Removal by Simulated Riparian Zone Enhanced with Red Mud Treating Reclaimed Water
赤泥强化型河岸带模拟系统对再生水中磷去除效果的研究

LIU Ping,QIN Jing,WANG Chao,<br>刘平,秦晶,
环境科学 , 2011,
Abstract: The effect of red mud and the role of plants on the phosphorus removal of the reclaimed water were studied by lab-scale simulated riparian zone, which made well use of sintered red mud with well adsorption capacity for phosphorous due to its high contents of Ca, Al and Fe oxides. The results show that the suitable ratio range of adding red mud is 2.5%-5.0%, and correspondingly, the removal of phosphorus is as high as 82%-76%, resulting in 0.22-0.29 mg/L of effluent TP concentration and 74%-75% of SRP/TP. When the percentage of adding red mud is 2.5%, comparing with the system without plants, the performance of the system with plants improves by 4%, reaching to 86% and 0.17mg/L of effluent TP concentration. Obviously, red mud can be directly used in the riparian zone to enhance the phosphorus removal as a new and cheap material.
NUTRITIONAL AND ENVIRONMENTAL FACTORS AFFECTING GROWTH OF SCLEROTINIA SCLEROTIORUM AND OXALIC ACID ACCUMULATION IN CULTURE
菌核菌生长和产生草酸的营养和环境条件研究

Liu Shengyi Zhou Biwen Yu Ji Wang Chaoying,<br>刘,周必文,余琦,
微生物学通报 , 1993,
Abstract: 本研究探讨了培养基种类、酸碱度、温度对菌核菌(Sclerotinia sclerotiorum)菌丝生长(MG)和草酸累积(OA)的影响及MG和OA之间的动态变化过程。正交试验中,碳源为:琥珀酸钠-葡萄糖、蔗糖-马铃薯汁液和蔗糖的三种培养基中,OA量依次递减且差异显著。MG和OA成负相关关系。培养基的pH值是影响OA的一个主要因子,本试验中pH6最适合菌丝产草酸,而pH5最适合菌丝生长。23℃下OA和MG大于26℃下OA和MG。OA和MG的动态变化过程试验表明,不同培养基的草酸累积速率和最终
Use of Two-Points-Short-Term Free Chlorine Plus Chloramines Disinfection Process in Conventional Treatments of Water Supply
两点短时游离氯后转氯胺的顺序氯化消毒工艺研究

LIU Jing,CHEN Chao,ZHANG Xiao-jian,WANG Yang,<br>刘静,,张晓健,
环境科学 , 2008,
Abstract: Two-points-short-term free chlorine plus chloramines disinfection process was used in conventional treatments of water supply. The process is adding chlorine at the start of filtration and clear well respectively, and then after a few minutes chlorine disinfection in clear well adding ammonia to change the chlorine to chloramines. The point of chlorine dosing move up to the filtration process can decrease disinfection by-product yield and control bio-film growth in filtration process. Compared with adding equal quantity chlorine once, this process reduced 51.6% of THMs and 46.7% of HAAs. HPC result also showed advantage in microorganism controlling.
Effects of technology progress and industry structure on the industrial wastewater discharge of Tianjin
技术进步和结构调整对天津市工业废水排放变化贡献分析

LIU Ping,WANG Chao,WEI Yuansong,QIN Jing,<br>刘平,,魏源送,秦晶
环境科学学报 , 2011,
Abstract: 为了阐明经济发展同环境污染之间的相互关系,本文从技术进步和产业结构入手,系统分析了天津市1996-2008年工业废水排放的变化趋势。研究结果表明,废水排放量与人均工业产值之间存在倒U型曲线关系,符合环境库兹涅兹曲线。相对于1996年,2008年技术进步使废水排放水平减少了7.8吨/万元产值,但产业结构调整使废水排放水平最多只减少了0.33吨/万元产值。显而易见,技术进步是天津市主要行业的工业废水排放强度大幅降低的主要影响因素,而产业结构调整并没有明显改变天津市支柱行业,对天津市工业废水排放水平降低的作用不如技术进步。
Research on intelligent technique of computer aided conceptual design
计算机辅助概念设计的智能化方法研究

WANG Jing-lian,LIU Hong,WANG Wen-sheng,LI Shao-hui,<br>静莲,刘弘,,李少辉
计算机应用研究 , 2007,
Abstract: 建立了一个新的智能化计算机辅助概念设计环境。该环境除巧妙地将计算机图形学理论、建筑设计专业知识和群体智能中的蚁群算法集成在一起外,还根据建筑构件间的实际偏序关系,在原算法的基础上引入了一种可使蚁群变得更聪明的创新机制。实验表明,该环境运行性能良好、样例构思新颖。
Seasonal changes of soil phosphorus fractions under Calamagrostis angustifolia wetlands in Sanjiang Plain, China
三江平原湿地土壤磷形态转化动态

QIN Sheng-Jin,LIU Jing-Shuang,WANG Guo-Ping,WANG Jin-Da,<br>秦,刘景双,王国平,金达
生态学报 , 2007,
Abstract: The seasonal dynamics of soil P fractions was determined in the Sanjiang plain marshes.The soil samples were taken from a depression marsh once or twice every month during the growth season and soil P fractions were determined by the modified Hedley fraction method in 2005.The study showed that P was mainly organically bound in the Sanjiang Plain wetlands.NaOH extractable organic P(NaOH-Po)and inorganic P(NaOH-Pi)was the predominant form in total organic P(TPo)and total inorganic P(TPi);respectively.The content of Resin-P was highest at end of August and lowest at the early days of July,seasonal dynamic of NaHCO3-Pi and NaOH-Pi were similar to Resin-P.Dil.HCl-Pi and Conc.HCl-Pi had their highest and lowest value at the beginning of September and the initial stage of May.The variation coefficient of Resin-P and Conc.HCl-Pi were higher than other Pi fractions,the level of them decreased from the beginning of growth season to the end of growth season,while the other Pi fractions increased in some degree.For organic phosphorus(Po),the variation coefficient of NaOH-Po was highest in the Po fractions,and NaOH-Po content reduced in the end of the growth season,NaHCO3-Po,Conc.HCl-Po and Residual-P had no obvious changes during this time.The concentration of TP and TPo had significant correlation and the concentration of TP was similar to TPo.The dynamic of P fractions,especially inorganic P forms are intensively affected by the plants,the change of their value go with the absorbing intensity of plants,especially Resin-P.The transformation of phosphorus is directly promoted and also indirectly improved by environmental factors(e.g.water and temperature)with their effect on the biomass or activity of microorganism.The soil water content plays an important role in sorption and desorption of NaHCO3-Pi,NaOH-Pi from soil.The biomass or activity of microorganism usually influences mineralization of organic P.The Pi which is released from mineralization of Po is usually first absorbed by mineral oxide and then transform into other more active form for utilizing of plants or microbe.
THEORETICAL STUDY OF THE STRUCTURE AND MAGNETISM OF Co1-xMnx ALLOYS
Co1-xMnx合金电子结构和磁性的理论研究

LIU GUO-LEI,JING CHAO,WU DI,WU YI-ZHENG,DONG GUO-SHENG,JIN XIAO-FENG,<br>刘国磊,,吴 镝,吴义政,董国,金晓峰
物理学报 , 1999,
Abstract: The magnetism of Co1-xMnx alloys strongly depends on their structure and the Mn content.An ab initio linearized augmented plane wave (LAPW)method has been carried out to provide the electronic and magnetic structures for the fcc and bcc Co1-xMnx alloys with x=0.00,0.25,0.50,0.75 and 1.00. By increasing the Mn content,the magnetism of fcc Co1-xMnx alloys changes from ferromagnetism to ferrimagnetism,finally to antiferromagnetism;on the other hand, the magnetism of bcc Co1-xMnx alloys changes from ferromagnetism to ferrimagnetism.A good agreement is reached between out calculations and the previous experimental results.
Page 1 /575760
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.