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Search Results: 1 - 10 of 55254 matches for " XI Jin-ying "
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Metabolic Properties of the Microbial Community in the Biofilters Using Biolog Microplates
生物过滤塔中微生物群落的代谢特性

XI Jin-ying,HU Hong-ying,JIANG Jian,QIAN Yi,
席劲瑛
,胡洪营,姜健,钱易

环境科学 , 2005,
Abstract: It is very important to know the structure and metabolic function of the microbial community in a bioreactor in order to improve its performance. In this study, two biofilters, packed with wood chips and granular activated carbons respectively, were operated for 160 days to treat toluene gas. The metabolic profiles of the microbial communities in the biofilters were monitored using Biolog microplates periodically during the experiments. The metabolic activities of the microorganisms in both biofilters were observed to decrease during long-term operation. According to the results of principle components analysis, the metabolic profiles of the microbial communities did not change much in the former period of the operation, but they changed in the inlet layers on day 103 and changed throughout the filter beds on day 160. The variation of the metabolic profiles in both biofilters showed little difference, which suggested that the packing media had little effect on them during long-term operation. Among the 95 carbon sources in Biolog microplate, carboxylic acids and amino acids were much easier to be utilized by the microorganisms in the biofilters than the other carbon sources.
Characterization of Thermophilic Strain SY-14 with Capability to Lyse Bacterial Cells
嗜热溶胞菌SY-14的基本特性研究

SONG Yu-dong,HU Hong-ying,XI Jin-ying,
宋玉栋
,胡洪营,席劲瑛

环境科学 , 2007,
Abstract: One spore-forming thermophilic bacterial strain SY-14, isolated from sewage sludge compost, showed significant capability to lyse bacterial cells. The strain was identified as Geobacillus sp. based on morphological characteristics and homology identification of 16S rDNA sequence. The optimal temperature and pH for growth were about 60 degrees C and pH 6.0-7.0 respectively. The culture supernatant of SY-14 showed lytic activity against both intact and thermal inactivated bacterial cells, and the cell lysis percentages at 6 hours were 70% and 85% respectively. The lytic activity of the culture supernatant decreased significantly after heat treatment, which inferred the lytic activity mainly derived from extracellular lytic enzymes of SY-14. The lytic activity of the culture supernatants of SY-14 increased significantly during the log phase in the batch culture process, and then decreased quickly after the maximum activity was reached. The culture supernatant of SY-14 showed lytic activity against all the five tested Gram-negative strains and some tested Gram-positive strains.
Chemical Removal of Excess Biomass from Biofilters
化学洗脱法去除生物过滤塔中菌体的研究

XI Jin-ying,HU Hong-ying,ZHANG Xian,QIAN Yi,
席劲瑛
,胡洪营,张娴,钱易

环境科学 , 2007,
Abstract: Biomass control techniques are very important for biofilters treating volatile organic compounds (VOCs) to enhance their long-term operation performance. In this study, four paralleled biofilters were set up treating toluene gas. The chemical removal of excess biomass and its impact on biofilter operation were investigated. The experimental results of circulating wash showed that the optimal washing time for biomass removal was 2~3 hours by NaOH ranging from 0.2% to 0.8%. Among the four experimental concentrations, the NaOH solution of 0.4% was more effective to remove the biomass from the biofilter and biomass shearing was the main process of the biomass removal under this circumstance. According to the comparison results of three washing mode, circulating washing was found to be the most suitable mode for biomass removal. The monitoring results of the toluene removal performance demonstrated that the impacts of NaOH solutions with different concentrations had little difference and the toluene removal capacities could be recovered after 3~4 days.
Mechanisms of UV Photodegradation on Performance of a Subsequent Biofilter Treating Gaseous Chlorobenzene
紫外光降解对生物过滤塔去除氯苯性能的影响机制研究

WANG Can,XI Jin-ying,HU Hong-ying,YAO Yuan,
王灿
,席劲瑛,胡洪营,姚远

环境科学 , 2012,
Abstract: To provide insight into effects of UV pretreatment on a subsequent biofilters, the mechanisms of UV pretreatment on biofilter performance were further studied. Results showed that gaseous chlorobenzene UV photodegradation products resulted in a pH decrease from 6-8 to 4-7 in filter bed. Ozone produced by UV photodegradation changed the physical properties of biofilm by reducing biofilm thickness and oxidizing surface part of the extra-cellular polymer substance, which promoted the oxygen, nutrient and pollutant transfer to biofilm. The reduction of biofilm thickness further resulted in the improvement of filter bed's physical properties by providing a higher specific surface area of 880 m2·m-3 compared with the value of 784 m2·m-3 without UV pretreatment.
Design and Implementation of Bank Workstation and Self-Help Equipment Management Information System
银行网点及自助设备管理信息系统设计与实现

WANG Can,XI Jin-ying,HU Hong-ying,SHEN Ru-qiao,LIU Yi-ping,
张毅
,张传林,张坤

计算机系统应用 , 2009,
Abstract: This work was attempted to provide a model to describe the performance of an UV photochemical reactor to remove gaseous chlorobenzene. Based on photochemical process and linear source sphere emission(LSSE) irradiation energy distribution, the model established in this study indicated that the performance of the reactor was dependent on the local volumetric rate of energy absorption (LVREA) inside reactor, the empty bed residence time and the inlet concentration. Moreover, the model was used to predict the outlet concentrations under the operating conditions of various inlet chlorobenzene concentrations and empty bed residence time. Finally, the model shows theory significance for the engineering design and operation of the UV photochemical reactor.
Research of ADIDS based on adaptive immune system
基于适应性免疫的ADIDS模型研究

ZHANG Zheng-qiu,YAO Zhi-qiang,YAN Xi-shan,ZHANG Jin-ying,
张正球
,姚志强,颜西山,张金颖

计算机应用研究 , 2009,
Abstract: Proposed a distributed ADIDS based on agent and adaptive immune system. The model made full use of the autonomy of agent, and weakened the relationship of them, with the introduction of adaptive immune principle, to identify new special intrusion by self-study and evolution, and to quicken up future detection-speed and lower false-detection rate by immunity-memory and self-clone. These methods improved the ability and the efficiency of intrusion detection. Experimental results show that the model possesses higher efficiency and veracity with adaptability and expansibility and agility.
Semi-strictly F-G Generalized Convex Functions
ZHAO Yu,HUANG Jin-ying
Journal of Chongqing Normal University , 2011,
Abstract: This paper difines generalized convex sets and generalized convex functions, furthermore gives the diffinition of Semi-strictly F-G generalized convex functions. It generalizes the conditions C of reforence [5] to conditions P1, P2 gives their properities and obtains the equal relation between conditions P1 and P2. The relation is supposed F to satisfy conditions P1 and P2 over K then for any * Based on this ,comparing to reference [9] and [10], the author gives two sufficient conditions of semi-stricly F-G generalized convex functions and gives that under certain conditions ,F-G generalized convex functions is semi-strictly F-G generalized convex functions when F-G generalized convex functions satisfy intermediate-point semi-stricly F-G generalized convexity. At last, this paper enumerates several vector valued functions F and numerical functions G and the applications of semi-strictly f-G generalized convex functions in minimization problems.(* Indicates a formula, please see the full text)
White Rot Fungi Biofilter Treating Waste Gas Containing Chlorobenzene
白腐真菌生物过滤塔处理氯苯气体的研究

WANG Can,XI Jin-ying,HU Hong-ying,YU Yin,WEN Xiang-hua,
王灿
,席劲瑛,胡洪营,于茵,文湘华

环境科学 , 2008,
Abstract: A novel gas-solid phase bioreactor, using bamboo as support material, inoculated with white-rot fungi Phanerochaete chrysosporium was established to treat waste gas containing chlorobenzene. The performance of P. chrysosporium bioreactor was examined under different conditions. Results in this study shown that the maximum removal efficiency of nearly 80 % (average removal efficiency of 50 %) could be reached under the condition of chlorobenzene inlet concentration of 200~1 500 mg/m3 and the Empty Bed Retention Time (EBRT) of 122 s. While the maximum chlorobenzene removal rate of 94 g /(m3?h) average removal efficiency of 60 g /(m3?h)] had been achieved within chlorobenzene inlet concentration of 500~1 500 mg/m3 and at the flow rate of 0.5 m3/h. Furthermore, the removal rates of the bioreactor at different flow rates were also examined, suggesting that the response of removal rate to the change of inlet loading was dependent on the flow rate. Lower flow rate could promote the extent of removal rate enhancement compared to the higher flow rate. Moreover, the profile of chlorobenzene concentration along the height of the biofilter showed a nonlinear decrease trend.
Establishment and Application of Gaseous Chlorobenzene UV-Photodegradation Model
紫外光降解反应器去除氯苯气体模型的建立与应用

WANG Can,XI Jin-ying,HU Hong-ying,SHEN Ru-qiao,LIU Yi-ping,
王灿
,席劲瑛,胡洪营,沈茹乔,刘一平

环境科学 , 2009,
Abstract: This work was attempted to provide a model to describe the performance of an UV photochemical reactor to remove gaseous chlorobenzene. Based on photochemical process and linear source sphere emission(LSSE) irradiation energy distribution, the model established in this study indicated that the performance of the reactor was dependent on the local volumetric rate of energy absorption (LVREA) inside reactor, the empty bed residence time and the inlet concentration. Moreover, the model was used to predict the outlet concentrations under the operating conditions of various inlet chlorobenzene concentrations and empty bed residence time. Finally, the model shows theory significance for the engineering design and operation of the UV photochemical reactor.
Generation of recombinant vaccinia virus expressing attachment glycoprotein of Nipah virus
表达尼帕病毒G囊膜糖蛋白重组牛痘病毒的研究

WANG Xi-jun,WANG Qing-hua,GE Jin-ying,HU Sen,BU Zhi-gao,
王喜军
,王清华,葛金英,胡森,步志高

微生物学报 , 2006,
Abstract: The mammalian condon optimized G gene was synthesized by over-lapping PCR and used to generate recombinant vaccinia virus, rWR-NiV-G. The expression of Nipah virus G protein in rWR-NiV-G infected HeLa cells was confirmed by western-blot with NiV G protein specific mouse antiserum generated by DNA immunization.The recombinant G protein showed sensitive and specific antigenic reaction to rabbit serum anti-Nipah virus in indirect florescence. Syncytium formation was induced in BHK cells by rWR-NiV-G infection following NiV F protein expressing plasmid pCAGG-NiV-F transfection. Immunization with rWR-NiV-G elicited G protein specific antibody responses in mice. The prokaryotic expressing G protein fragment showed sensitive and specific antigenic reaction to NiV G protein specific antibody from rWR-NiV-G immunized mice serum in indirect ELISA. Furthermore, the G protein specific antibodies could neutralize the infectivity of the recombinant Vesicular Stomatitis Virus pseudotype VSVAG * F/G, in which the VSV envelope protein G gene was replaced with the green fluorescent protein gene (VSVAG * G, Whitt MA) and complemented with Nipah virus F and G glycoprotein expressed in transient (VSVAG * F/G).The results here demonstrated the G protein expressed by rWR-NiV-G keeps native immunogenicity and biological activity. The recombinant virus could be promising vaccine strategy for the prevention of Nipah virus.
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