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Search Results: 1 - 10 of 591590 matches for " 李建新<br>LI Le "
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纳米氧化锰负载钛基电催化膜制备及处理含酚废水性能研究
Preparations of Nano-Manganite Loaded Titanium Electocatalytic Membrane Electrode for Phenolic Wastewater Treatment

,王虹,马荣花,惠洪森,梁小平,<br>LI Le, WANG Hong, MA Rong-hua, HUI Hong-sen, LIANG Xiao-ping, LI Jian-xin
- , 2018, DOI: 10.13208/j.electrochem.180216
Abstract: 摘要 以多孔钛膜为基膜,醋酸锰为锰源,采用溶胶凝胶法制备出负载纳米氧化锰的钛基电催化膜(nano-MnOx/Ti膜). 运用X射线衍射(XRD)、 X射线光电子能谱(XPS)、场发射扫描电子显微镜(FESEM)、循环伏安法(CV)、交流阻抗法(EIS)和计时电流法(CA)等测试手段,对MnOx/Ti膜电极的微观形貌、晶型、电化学性能等进行表征. 结果表明:所得催化剂是由直径为50 nm的γ-MnO2和Mn2O3纳米棒所组成,且均匀分布于Ti膜上,负载催化剂后钛膜电极电化学性能和催化性能明显提高,催化剂与基体之间键合的形成提高其稳定性. 以棒状nano-MnOx/Ti膜电极为阳极构建电催化膜反应器(ECMR)处理含酚废水,当苯酚溶液浓度为10 mmol·L-1,电流密度为0.25mA·cm-2、停留时间为15 min时,COD去除率可达95.1%.
Nano-manganese oxide loaded on titanium electrocatalytic membrane electrodes (nano-MnOx/Ti) were synthesized bysol-gel method using porous Ti membrane as a substrate and the manganese acetate as a raw material without releasing NOx. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Field-emission scanning electron microscopy (FESEM) were employed to characterize crystal form, valence state and surface morphology of nano-MnOx, respectively. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and chronoamperometry (CA) were used to investigate the electrochemical properties of nano-MnOx electrode. The results indicated that the MnOx catalysts consisted of γ-MnO2 and Mn2O3 nanorods with the diameter of 50 nm, which distributed uniformly on the Ti membrane. The electrochemical performance and catalytic performance of the membrane electrode improved obviously after the loading of the catalyst. The formation of chemical bond between Ti and MnOx led a good stability of MnOx/Ti membrane electrode. The electrocatalytic membrane reactor (ECMR) was assmblied by using nanorods the MnOx/Ti membrane as an anode and a stainless steel mesh as a cathode for the phenolic wastewater treatment (10 mmol·L-1). It was found that the COD removal rate of ECMR was up to 95.1% at current density of 0.25 mA·cm-2and residence time of 15 min
Application of the Geo-Information Technologies to the Process of Moving the Germany''s Capital from Bonn to Berlin --Dedicated to the 80th birthday of Professor Chen Shupeng on 14th, February 2000
德国迁都柏林过程中的地球信息技术——祝贺陈述彭院士2000年2月14日八十华诞生日快乐

Li Jianxin,<br>
地球信息科学 , 2000,
Abstract: The decision to make Berlin Germany's capital after the reunion of Germany in 1991 and to move her parliament and government from Bonn to Berlin till 2000 has caused many new development tasks for Berlin and Bonn To organize these tasks within a short period of time, the Geo Information Technologies, for example Remote Sensing (RS), Geographical Information System (GIS) and Global Positioning System (GPS), are used The survey legislation of Berlin commits the authorities to employ the automated real estate map of Berlin as base information system for all other property-related data in administration A lot of combined terrestrial and GPS measurements in an accurate geodetic network and airphoto interpretation have been made, especially in east Berlin area The manifold constructive and operative tasks can only be efficiently dealt with by using electronic processing systems because of simultaneous data growth For example, the construction of the parliament and government area is supported by a data pool system, and meanwhile a GPS GIS is used to monitor the movements of the neighbouring large buildings A Internet GIS for facility management is opened for the workers in the parliament and government in Bonn who are going to move to Berlin The GPS GIS is applied in the traffic control, too There are also many environmental Remote Sensing projects in Berlin and Brandenburg, the Geese infrared Remote Sensing with a special airplane is given here as an interesting example A regional economic GIS has been developed for supporting consulting and canvassing activities and for presenting the regional supply within the framework of structural measures to be carried out for making compensation for the loss in the region of Bonn
A study on the biosphere reserve pattern of oasis economy based on eco-agricultural paradigm of mountain-basin system in Xinjiang
新疆山盆系统绿洲经济生物圈保护区模式探讨

LI Jian-Xin,<br>
中国生态农业学报 , 2004,
Abstract: The landscape zones from the Altay Mountains, the Gurbantunggut Desert, the Tianshan Mountains, the Taklimakan Desert to the Kunlun Mountains result in the converse zonation pattern of the biosphere reserve pattern of oasis economy. Under the restricted conditions of the inner transition area, the oasis's economy should be transformed into that of an island, for using the resources outside the biosphere reserve. The other strategy would be made to remodel the economy of the inner transition area to make it more productive and ecological sustainable. Suggestions have been made to set the Altay Mountains, the Gurbantunggut Desert, the Tianshan Mountains, the Taklimakan Desert and the Kunlun Mountains under protection zones for water sources or for biodiversities, to change the farmland areas near the desert boundaries into pastureland.
Water environment carrying capacity in Dianchi Lake basin and its dynamic variation characteristics
滇池流域水环境承载力及其动态变化特征研究

SHI Jianping,LI Xin,<br>石,
环境科学学报 , 2012,
Abstract: 为了定量分析人口增长、经济发展、资源短缺和环境污染等因素对流域水环境的综合影响,建立了湖泊水环境承载力多目标优化模型.同时,选取人口、灌溉面积、国民生产总值(GDP)、化学需氧量(COD)、总氮(TN)、总磷(TP)作为水资源和水质量承载力指标,运用层次分析法(AHP)确定各指标对湖区水环境承载力的权重,并运用指标体系评价法分别计算了2003—2010年滇池流域水环境承载力.结果表明,流域内人口承载度超标,经济承载压力显著增长,富营养化指标——TP、TN呈高负荷波动状态.滇池流域水环境承载力为负承载,水质量承载力影响程度更大.研究结果可为滇池流域的社会经济发展规划、生态环境保护和水资源可持续利用提供科学依据.
A Taxonomic Revision of Actinidia umbelloides C.F.Liang
伞花猕猴桃的分类学修订

LI Xin-Wei,LI Jian-Qiang,<br>,
植物科学学报 , 2007,
Abstract: 在查阅猕猴桃属植物标本时,发现了伞花猕猴桃(Actinidia umbelloidesC.F.Liang)的新分布点,分布地点位于西藏和云南,补充了其花部特征的描述,并将扇叶猕猴桃(Actinidia umbelloidesC.F.Liang var.flabellifoliaC.F.Liang)作为伞花猕猴桃的异名处理。
A Study of Self-adaptive Transmission for Integrated Voice and Data Services over an IEEE 802.11 WLAN
IEEE 802.11 WLAN支持语音与数据业务的自适应传输方案研究

Li Chang-le,Li Jian-dong,Cai Xue-lian,<br>长乐,,蔡雪莲
电子与信息学报 , 2005,
Abstract: The IEEE 802.11 standard MAC is a hybrid protocol of random access and polling when both DCF (Distributed Coordination Function) and PCF (Point Coordination Function) are used. On the base of the performance analysis of the MAC protocol for integrated data and voice transmission by simulation, this paper puts forward a self-adaptive transmission scheme to support multi-service over the IEEE 802.11 WLAN. The simulation results show that, on the premise of satisfying the maximum allowable delay of packet voice, the self-adaptive transmission scheme can improve the data traffic performance and increase the WLAN capacity through dynamic and appropriate adjustment of the protocol parameters. Especially, the scheme is easy to be realized for no change in the MAC protocol is needed.
Topology-transparent Link Activation MAC Protocol for MIMO Link Ad hoc Networks
支持MIMO链路的Ad hoc网络中的链路激活型拓扑未知MAC协议

Chen Dan,Li Jian-dong,Li Chang-le,<br>陈丹,,长乐
电子与信息学报 , 2010,
Abstract: A topology-transparent link activation Media Access Control (MAC) protocol is proposed for Ad hoc networks with Multiple Input Multiple Output (MIMO) links. The protocol allocates transmission slots for each link in the networks based on the theory of orthogonal Latin squares , so that each link can successfully transmit its data streams in at least one slot in a frame. The average throughput of the protocol is deduced through theoretical analysis. To maximize the average throughput, a method of searching the optimal protocol parameters is also derived in this paper. Numerical results show that, compared with existing topology-transparent link activation and node activation MAC protocol, the proposed protocol can increase the throughput of each network node.
Biotope mapping in cities, towns and villages--a national program in Germany
德国人文聚落区生态单元制图国家项目

Wolfgang Schulte,Herbert Sukopp,LI Jianxin,<br>Wolfgang Schulte,Herbert Sukopp,
生态学报 , 2003,
Abstract: 联邦德国自然保护法、德国各州自然保护法要求在自然景观区和人文聚落区保护、管理和发展自然。实现这一法律要求 ,必须以现实的、全面的、高质量的、与自然保护原则相匹配的数据为基础。实践证明 ,城乡生态单元制图是获取和解释这些数据不可或缺的手段。德国人文聚落区生态单元制图始于 1 978年 ,同年组建成立了德国联邦与各州自然保护部门参加并联合协调的“人文聚落区生态单元制图工作组”。 1 986年工作组提出了德国人文聚落区生态单元制图基本方案 ,1 993年完成基本方案修订版。基本方案的目标是在全国范围建立标准制图方法 ,使获取的科学数据可以相互比较。至 2 0 0 0年 ,德国在人文聚落区生态单元制图项目上的投资约合 2亿马克 ;至 2 0 0 1年 3月 ,德国有 2 2 3个大中城市已经完成或正在实施生态单元制图 ,人文聚落区生态单元制图已经成为德国各级政府生态规划的基本工作内容。
Study on the Asymmetric Bioreductions of Candida sp. C 5
假丝酵母C-5的不对称生物还原作用研究

Li Zuyi,Gu Jianxin,Pan Bingfeng,<br>祖义,,潘冰峰
生物工程学报 , 1998,
Abstract: Eight strains of microorganisms which have activity of dicarbonyl compound reduction were isolated from hundreds of strains of yeasts and fungi, in which Candida sp. C 5 showed the highest activity and good regioselectivity and stereoselectivity. The effect of reaction time, biomass, reaction solution, pH, aeration and temperature on the bioreduction was investigated.
Optimal Scheduling on Combinatorial Transportation
组合运输的优化调度

LI Jun,GUO Qiang,LIU Jian,|xin,<br>,郭强,
系统工程理论与实践 , 2001,
Abstract: In this paper, the vehicle\|scheduling problem with non\|full load at the case of multiple depots is analyzed. The combinatorial transportation is presented in order to enhance the effectiveness of transportation utilizing a single vehicle. A sequential heuristic algorithm is constructed, which consists of clustering and chaining. Lastly, the method is applied to a case study.
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