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26篇 您的检索式:作者名="Guangren LIU"
    题名 作者 年代 出处 被引量
1Variability and reduction of atmospheric pollutants in Beijing and its surrounding area during the Beijing 2008 Olympic Games显示文摘The Beijing-Tianjin-Hebei Atmospheric Environment Monitoring Network was established by the Institute of Atmospheric Physics,Chinese Academy of Sciences.The goals of the network were to monitor and provide warnings of the atmospheric quality in Beijing and its surrounding area during the Beijing 2008 Olympic Games.The results showed that the atmospheric complex pollution exhibited high concentrations of ozone and fine particles and oxidation in summer,with a ubiquitous regional source.The regional mean concentrations of SO2,PM2.5,NO2,and O3_8h max(the maximum daily 8 h mean) and Ox were 22±11,90±40,25±5,136±35 and 112±21 μg/m3 in summer,respectively.During the Olympic Games,the mean concentration of SO2,PM2.5,NO2,O3_8h max,and Ox were 12.5±4,56±28,23±4,114±29,95±17 μg/m3 in the region,respectively,and fell by 51.0%,43.7%,13%,20.2%,and 18.9%,respectively,compared to the prophase mean before the Olympic Games.The concentration of atmospheric pollutants declined significantly and achieved the 'Green Olympics' control goal of air quality.After the Olympic Games,SO2,PM2.5 and NOx increased significantly as the temporary atmospheric pollution control measures were terminated.XIN JinYuan WANG YueSi TANG GuiQian WANG LiLi SUN Yang WANG YingHong HU Bo SONG Tao JI DongSheng WANG WeiFeng LI Liang LIU GuangRen 2010Chinese Science Bulletin2010,55,18:30
2Fluxes of CH4 and N_2O from soil under a tropical seasonal rain forest in Xishuangbanna, Southwest China显示文摘从在在 Xishuangbanna 的热带季节的雨林下面的土壤的 CH4 和 N2O 流动,西南中国用关上的静态的房间技术和气体色层法方法被测量一年。三个处理被放在学习的地里:(A) 没有崽,有垃圾的(B) ,和有垃圾和幼苗的(C) 。结果证明在我们的学习的土壤是大气的 CH4 的一个水池和大气的 N2O 的来源。从处理 A, B,和 C 的观察吝啬的 CH4 流动是 50.0 ± 4.0, 35.9 ± 2.8, 31.6 ± 2.8 μ g C/(m2 · h ) ,分别地并且在 2003 的计算年度流动分别地是 4.1, 3.1,和 2.9 kgC/hm2。从处理 A, B,和 C 的观察吝啬的 N2O 流动是 30.9 ± 3.1, 28.2 ± 3.5, 50.2 ± 3 .7 μ g N/(m2 · h ) ,分别地并且在 2003 的计算年度流动分别地是 4.1, 3.1,和 2.9 kgC/hm2。从处理 A, B,和 C 的观察吝啬的 N2O 流动是 30.9 ± 3.1, 28.2 ± 3.5, 50.2 ± 3 .7 μ g N/(m2 · h ) ,分别地并且在 2003 的计算年度流动是 2.8, 2.6,和 3.7 kgN/hm 2 分别地。在 CH4 和 N2O 流动的季节变化在所有三个处理之中是重要的。垃圾的存在减少了 CH4 举起在湿季节期间(P < 0.05 ) ,然而并非在干旱期期间。调停幼苗的 N2O 排出物有类似的增加在期间湿并且干旱期,显示幼苗在两个季节增加了 N2O 排放。一种强壮的积极关系为处理 B 和处理 C 为所有三个处理,和在 CH4 流动和土壤温度之间的弱关系在 CH4 流动和土壤潮湿之间存在。N2O 流动为所有三个处理与土壤温度相关。YAN Yuping SHA Liqing CAO Min ZHENG Zheng TANG Jianwei WANG Yinghong ZHANG Yiping WANG Rui LIU Guangren WANG Yuesi SUN Yang 2008Journal of Environmental Sciences2008,20,2:18
3Soil respiration in tropical seasonal rain forest in Xishuangbanna, SW China显示文摘With the static opaque chamber and gas chromatography technique, from January 2003 to January 2004 soil respiration was investigated in a tropical seasonal rain forest in Xishuangbanna, SW China. In this study three treatments were applied, each with three replicates: A (bare soil), B (soil+litter), and C (soil+litter+seedling). The results showed that soil respiration varied seasonally, low from December 2003 to February 2004, and high from June to July 2004. The annual average values of CO2 efflux from soil respiration differed among the treatments at 1% level, with the rank of C (14642 mgCO2· m-2. h-1)>B (12807 mgCO2· m-2. h-1)>A (9532 mgCO2· m-2. h-1). Diurnal variation in soil respiration was not apparent due to little diurnal temperate change in Xishuangbanna. There was a parabola relationship between soil respiration and soil moisture at 1% level. Soil respiration rates were higher when soil moisture ranged from 35% to 45%. There was an exponential relationship between soil respiration and soil temperature (at a depth of 5cm in mineral soil) at 1% level. The calculated Q1o values in this study,ranging from 2.03 to 2.36, were very near to those of tropical soil reported. The CO2 efflux in 2003was 5.34 kgCO2· m-2. a-1 from soil plus litter plus seedling, of them 3.48 kgCO2· m-2. a-1 from soil (accounting for 62.5%), 1.19 kgCO2· m-2. a-1 from litter (22.3%) and 0.67 kgCO2·m-2. a-1 from seedling (12.5%).SHA Liqing, ZHENG Zheng, TANG Jianwei, WANG Yinghong, ZHANG Yiping, CAO Min, WANG Rui, LIU Guangren, WANG Yuesi & SUN Yang Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China Graduate School of Chinese Academy of Sciences, Beijing 100039, China 2005Science China Earth Sciences2005,48,z1:12
4Trend,seasonal and diurnal variations of atmospheric CO_2 in Beijing显示文摘The concentration of atmospheric CO2 in Beijing increased rapidly at a mean growth rate of 3.7%·a-1 from 1993 to 1995. After displaying a peak of (409.7±25.9) μmol·mol-1 in 1995, it decreased slowly. Both the almost stable anthropogenic CO2 source and increasing biotic CO2 sink contribute to the drop of CO2 concentration from 1995 to 2000. The seasonal variation of CO2 concentration exhibits a clear cycle with a maximum in winter, averaging (426.8± 20.6)μmol·mol-1, and a minimum in summer, averaging (369.1±6.1)μmol·mol-1. The seasonal variation of CO2 concentration is mainly controlled by phenology. The mean diurnal variation of atmospheric CO2 concentration for a year in Beijing is highly clear: daily maximum CO2 concentration usually occurs at night, but daily minimum CO2 concentration does in the daytime, with a mean diurnal difference more than 34.7μmol·mol-1. It has been revealed that the interannual variations of atmospheric CO2 concentration in winter and autumn regulated theWANG Yuesi, WANG Changke, GUO Xueqing, LIU Guangren & HUANG YaoLAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100083, China Department of Chemistry, Capital Normal University, Beijing 100037, China 2002Chinese Science Bulletin2002,47,24:8
5Validation of MODIS aerosol products by CSHNET over China显示文摘The Chinese Sun Hazemeter Network (CSHNET) provides the necessary ground-based observation to validate and assess the applicability of MODIS aerosol optical depth (AOD) products over different ecological and geographic regions in China for the first time. The validation results show that the comprehensive utilization ratio and applicability of MODIS products varied very much over different regions and seasons from August 2004 to July 2005. On the Tibetan Plateau, the comprehensive utili- zation ratio of MODIS data was low: MODIS products only accounted for 16% of the ground-based observation; on average, 31% to 45% of MODIS products fell within the retrieval errors issued by NASA. A similar result was found in northern desert areas with the ratio of MODIS to observation ranging from 15% to 55%, with 7% to 39% of MODIS products within errors. In the remote northeast corner of China, low ratios of MODIS to observation were also found ranging from 14% to 46%, with 49% to 69% of MODIS within errors. The forested sites exhibited moderate ratios of MODIS to observation ranging from 46% to 65%, with 30% to 59% of MODIS within errors. This was similar to numbers observed at sites along eastern seashore of China and inland urban sites with the ratio of MODIS to observation between 63% to 75%, with 25% to 67% of MODIS within errors for sites along eastern seashore of China and 43% to 78%, with 35% to 75% of MODIS within errors for inland urban sites. The ratio of MODIS to observation over agricultural areas ranged from 61% to 89%; 59%-88% of MODIS fell within the retrieval errors. At homogeneous and well vegetated areas, the comprehensive utilization ratio of MODIS products was over 80% and above 70% of MODIS products fell within the retrieval errors in growing season.WANG LiLi XIN JinYuan WANG YueSi LI ZhanQing WANG PuCai LIU GuangRen WEN TianXue 2007Chinese Science Bulletin2007,52,12:7
6Microbial bioavailability of dissolved organic nitrogen(DON) in the sediments of Lake Shankou,Northeastern China显示文摘Dissolved organic nitrogen(DON)extracted from Lake Shankou sediments using KCl was isolated into hydrophobic and hydrophilic fractions.The bioavailabilities of the hydrophobic and hydrophilic fractions to three types of bacterial communities collected from sediments,activated sludge and compost products were examined.The DON recoveries obtained by DAX-8 and cation exchange resins treatment were 96.17% ± 1.58% and 98.14% ±0% for the samples obtained from N4 and N14 stations,respectively.After 25 days of incubation at 25°C,most DON(59% to 96%)was degraded.Hydrophilic DON exhibited a higher reduction rate than hydrophobic DON during the growth phase.Untreated wastewater from Changshuihe town was the main degradable DON source to station N4,and 93% of hydrophilic DON and 80% of hydrophobic DON were degraded.Station N14 received a large amount of refractory DON from forest soils and exhibited DON degradation rates of 82% and 71% for the hydrophilic and hydrophobic fractions,respectively.Amino acid contents and fluorescence intensities were also analyzed.Approximately 27% to 74% of amino acids were taken up by day 5,and their concentration gradually increased in the following days due to the decomposition of dissolved proteins.Parallel factor analysis resulted in identification of tryptophan-like proteins,tyrosine-like proteins and FA-like substances.During the growth phase,40%–51% of the tryptophan-like proteins were taken up by bacteria,and the accumulation of tyrosine-like proteins was attributed to the release of biotic substances.The concentration of the FA-like substances decreased due to microbial decomposition.Mingzhou Su Jingtian Zhang Shouliang Huo Beidou Xi Fei Hua Fengyu Zan Guangren Qian Jianyong Liu 2016Journal of Environmental Sciences2016,28,4:5
7Computational functionality-driven design of semiconductors for optoelectronic applications显示文摘The rapid development of the semiconductor industry has motivated researchers passion for accelerating the discovery of advanced optoelectronic materials.Computational functionality-driven design is an emerging branch of material science that has become effective at making material predictions.By combining advanced solid-state knowledge and high-throughput firstprinciples computational approaches with intelligent algorithms plus database development,experts can now efficiently explore many novel materials by taking advantage of the power of supercomputer architectures.Here,we discuss a set of typical design strategies that can be used to accelerate inorganic optoelectronic materials discovery from computer simulations:In silico computational screening;knowledge-based inverse design;and algorithm-based searching.A few representative examples in optoelectronic materials design are discussed to illustrate these computational functionality-driven modalities.Challenges and prospects for the computational functionality-driven design of materials are further highlighted at the end of the review.Zhun Liu Guangren Na Fuyu Tian Liping Yu Jingbo Li Lijun Zhang 2020InfoMat2020,2,5:4
8N-methyl-2-pyrrolidonium-based Br?nsted-Lewis acidic ionic liquids as catalysts for the hydrolysis of cellulose显示文摘We experimentally studied the catalytic performances of a series of Br?nsted-Lewis acidic N-methyl-2-pyrrolidonium metal chlorides([Hnmp]Cl/MCl_x, where M=Fe, Zn, Al, or Cu) for the hydrolysis of microcrystalline cellulose(MCC) and cotton to produce reducing sugar. A variety of factors, such as temperature, time, ionic liquid(IL) species, IL dosage, and the concentration of the metal chloride were investigated. [Hnmp]Cl/FeCl_3 presented the best hydrolysis performance, affording a 98.8% yield of total reducing sugar from MCC(1 h, 100 °C, 0.1 g MCC, 0.2 g acidic IL, 2.0 g [Bmim]Cl as solvent), which is better than or comparable to results previously obtained with other –SO_3H functionalized acidic ILs. The hydrolysis performances of [Hnmp]Cl/MClx were rationalized using density functional theory calculations, which indicated that interactions between the metal chlorides and the cellulose, including charge-transfer interactions are important in the hydrolysis of cellulose and degradation of glucose. This work shows that Br?nsted-Lewis acidic ILs are potential catalysts for the hydrolysis of cellulose to produce sugar.Zheng Zhao Na Li Abdul Waheed Bhutto Ahmed A. Abdeltawab Salem S. Al-Deyab Guangqing Liu Xiaochun Chen Guangren Yu 2016Science China Chemistry2016,59,5:3
9Algal uptake of dissolved organic nitrogen in wastewater treatment plants显示文摘The algal uptake of dissolved organic nitrogen(DON) in the anaerobic–anoxic–oxic(A_2O)process was investigated in this study. Anaerobic, aerobic and effluent DON samples from two wastewater treatment plants(WWTPs) were separated into hydrophilic and hydrophobic fractions using a DAX-8 resin coupled with an anion exchange resin and a nanofiltration(NF)pretreatment. Hydrophilic DON accounted for 66.66%–88.74% of the entire DON for the two plants evaluated. After a 15-day incubation, 16.95%–91.75% DON was bioavailable for algal growth, and untreated samples exhibited higher DON bioavailability, with 52.83% DON average uptake rates, compared with the hydrophilic and hydrophobic fractions(45.53% and 44.40%, respectively) because the pretreatment caused the inorganic salt to be resistant to algae. Anaerobic untreated samples, hydrophilic fractions and hydrophobic fractions showed higher DON reduction rates and higher biomass accumulation compared with the other DON fractions due to the decomposition of resistant organics by anaerobic and anoxic bacteria.DON in aerobic and effluent samples of plant A was more bioavailable than that of plant B with usages of 27.49%–55.26% DON. DON bioavailability in the anaerobic–anoxic–oxic process decreased in the following order: anaerobic > effluent > aerobic. The DON contents were reduced after anaerobic treatment in the two plants. The EEM-PARAFAC model identified three DON components, including two humic acid-like substances and one protein-like substance in plant A and two protein-like substances and one humic acid-like substance in plant B.Jingtian Zhang Mingzhou Su Beidou Xi Guangren Qian Jianyong Liu Fei Hua Shouliang Huo 2016Journal of Environmental Sciences2016,28,12:3
10Characteristics of dioxins content in fly ash from municipal solid waste incinerators in China显示文摘Yun Pan Libo Yang Jizhi Zhou Jianyong Liu Guangren Qian Nobutoshi Ohtsuka Mamoru Motegi Kokyo Oh Shigeo Hosono 2013Chemosphere2013,,7:2
11Adaptive fuzzy backstepping control for attitude stabilization of flexible spacecraft with signal quantization and actuator faults显示文摘In this study,the fault-tolerant attitude control of flexible spacecraft is investigated over digital communication channels,where a uniform quantizer is considered with respect to the sensor signals and controller indexes.Further,an adaptive fuzzy backstepping control strategy has been developed for the considered attitude stabilization issue,where the adaptive fuzzy logic method is used to approximate the rigid-flexible coupled nonlinearity of the spacecraft.In this design,the online adjusting quantizer parameters are injected into the controller gains to simultaneously compensate for the quantization errors and timevarying actuator faults.In the proposed control method,the attitude stabilization task is achieved in the presence of external disturbances,time-varying actuator faults,and signal quantization.Finally,the practical examples are compared to demonstrate the effectiveness of the proposed control strategy.Qiuhong LIU Ming LIU Guangren DUAN 2021Science China(Information Sciences)2021,64,5:2
12Two Ultraviolet Radiation Datasets that Cover China显示文摘Ultraviolet(UV) radiation has significant effects on ecosystems, environments, and human health, as well as atmospheric processes and climate change. Two ultraviolet radiation datasets are described in this paper. One contains hourly observations of UV radiation measured at 40 Chinese Ecosystem Research Network stations from 2005 to 2015. CUV3 broadband radiometers were used to observe the UV radiation, with an accuracy of 5%, which meets the World Meteorology Organization's measurement standards. The extremum method was used to control the quality of the measured datasets. The other dataset contains daily cumulative UV radiation estimates that were calculated using an all-sky estimation model combined with a hybrid model. The reconstructed daily UV radiation data span from 1961 to 2014. The mean absolute bias error and root-mean-square error are smaller than 30% at most stations, and most of the mean bias error values are negative, which indicates underestimation of the UV radiation intensity. These datasets can improve our basic knowledge of the spatial and temporal variations in UV radiation. Additionally, these datasets can be used in studies of potential ozone formation and atmospheric oxidation, as well as simulations of ecological processes.Hui LIU Bo HU Yuesi WANG Guangren LIU Liqin TANG Dongsheng JI Yongfei BAI Weikai BAO Xin CHEN Yunming CHEN Weixin DING Xiaozeng HAN Fei HE Hui HUANG Zhenying HUANG Xinrong LI Yan LI Wenzhao LIU Luxiang LIN Zhu OUYANG Boqiang QIN Weijun SHEN Yanjun SHEN Hongxin SU Changchun SONG Bo SUN Song SUN Anzhi WANG Genxu WANG Huimin WANG Silong WANG Youshao WANG Wenxue WEI Ping XIE Zongqiang XIE Xiaoyuan YAN Fanjiang ZENG Fawei ZHANG Yangjian ZHANG Yiping ZHANG Chengyi ZHAO Wenzhi ZHAO Xueyong ZHAO Guoyi ZHOU Bo ZHU 2017Advances in Atmospheric Sciences2017,34,7:2
13Inhibitory effect of high-strength ammonia nitrogen onbio-treatment of landfill leachate using EGSB reactor under mesophilicand atmospheric conditions 显示文摘Liu Jianyong Luo Jinghuan Zhou Jizhi Liu Qiang Qian Guangren Xu Zhiping 2012Bioresource Technology2012,113,:1
14The effect ofcalcium on the treatment of fresh leachate in an expanded granularsludge bed bioreactor 显示文摘Liu Jianyong Hu Jun Zhong Jiangping Luo Jinghuan Zhao Aihua Liu Feng Hong Ruijing Qian Guangren Xu Zhiping 2011Bioresource Technology2011,102,:1
15Integrated guidance and control with input saturation and disturbance observer显示文摘In presence of input saturation,a novel integrated guidance and control(IGC)law based on the backstepping technique is proposed for missiles attacking manoeuvring target in this paper.A modified saturation function and an auxiliary system are proposed to deal with the input saturation.The state of the auxiliary system is used in the IGC law design process and stability analysis.Considering the uncertainties caused by target manoeuvres,model errors and variation of the aerodynamic parameters,disturbance observers which converge in finite time are introduced to estimate and compensate them.Based on the Lyapunov theory,the detailed stability analysis of the closedloop system is presented.The non-linear numerical simulations are presented to illustrate the effectiveness of the proposed IGC law.Wangkui Liu Yiyin Wei Guangren Duan Mingzhe Hou 2018Journal of Control and Decision2018,5,3:1
16A Study on Chamber Method of in-Situ Measurements of Greenhouse Gases Fluxes in Grassland显示文摘Du Rui Wang Gengchen Lu Daren Kong Qinxin Liu Guangren Wan Xiaowei 2000Chinese Journal of Atmospheric Science2000,24,4:1
17Biodegradation of benzoate by protoplast fusant via intergeneric protoplast fusion between Pseudomonas putida and Bacillus subtili显示文摘Mi Li Peng Yi Qiang Liu Yun Pan Guangren Qian 2013International Biodeterioration & Biodegradation2013,,:1
18H-infinity measurement-feedback control for discrete-time systems with a single measurement delay显示文摘为有即时、推迟的大小的线性分离时间的系统的 H 无穷控制问题被学习。为 H 无穷控制器的存在的一个必要、足够的条件被使用分析在 Krein 空间接近的重新组织的革新导出。测量反馈控制器被执行二 Riccatiequations 设计。介绍途径不要求州的扩大。Mei LIU Huanshui ZHANG Guangren DUAN 2006控制理论与应用(英文版)2006,4,2:1
19Disturbance attenuation in linear systems via dynamical compensators: A parametric eigenstructure assignment approach显示文摘Duan Guangren Liu Guoping 1993IEEE Trans Automatic Control1993,38,2:1
20Deep desulfurization of fuel oils using low - viscosity 1 - ethyl - 3 - methylimidazolium dicyanamide ionic liquid 显示文摘Yu Guangren Li Xi Liu Xinxing 2011Ing Eng Chem Res2011,50,4:1
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