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通信学报 1993年第2期14卷 48-54页

作者：毕厚杰南京邮电学院

本文简要介绍了静止图像编码中的方块截断编码、子带编码、拉普拉斯锥形编码及国际JPEG建议。此外,还介绍了两个实用的静止图像传输系统。

关键词：电视电话静止图象图像编码

Progress of Voice Call Continuity Service Standardization

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ZTE Communications 2007年第2期5卷 31-33页

作者： Hao Zhenwu Shen Min (Central Academy of ZTE Corporation,nanjing 210012,China)

The Voice Call Continuity (VCC) solution adopts the IP Multimedia Subsystem (IMS) control model,and introduces VCC application into the IMS to control voice calls and realize their continuity. Without changing the mobile network,the IMS-based VCC solution can fulfill Fixed Mobile Convergence (FMC),and supports the transition and evolution from the Circuit Switching (CS) mode to the IMS mode.

关键词： VCC IP IMS GPP

Status and Trends of Biological Invasions in China

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Status and Trends of Biological Invasions in China

Biodegradation of Pentachloronitrobenzene by Labrys portucalensis pcnb-21 Isolated from Polluted Soil

第三届全国生物入侵大会

作者： Hui Ding~1,Hai-gen Xu~(1*),Sheng Qiang~2,Ling Meng~2,Zheng-min Han~3,Jin-lai Miao~4,Bai-shi Hu~2, Hong-ying Sun~5,Jian-ying Guo~6,Cheng Huang~7,Jun-cheng Lei~1,Zhi-fang Le~1 1.The State Key Environmental Protection Laboratory of Biosafety,nanjing Institute of Environmental Sciences under Ministry of Environmental Protection,nanjing 210042 2.nanjing Agricultural University,nanjing 210095 3.nanjing Forestry University,nanjing 210037 4.The First Institute of Oceanography,State Oceanic Administration,Qingdao 266061 5.nanjing Normal University,nanjing 210046 6.Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193 7.nanjing University,nanjing 210093

Using document survey,filed survey and expert consultation,the invasive alien species(IAS) in the terrestrial ecosystem,inland water ecosystem and marine ecosystem of China were investigated. 488 IAS whose information include name,taxonomy,distribution,origin,site and time firstly identified, pathway,damage,nutrient circumstance,and habitant were *** those IAS,species of Plantae,Animalia,Fungi,Vira,Procaryotae,Protista were 266,170,26,12,11,3 respectively,and these species accounted for 54.51%,34.84%,5.33%,2.46%,2.25%,0.61%respectively.392 IAS were analyzed on their invading *** results showed,occurrence of 31 IAS before 1850,the number of IAS newly identified increasing totally after 1850,209 IAS account for 53.32%after *** where IAS were firstly identified mainly distributed in the coastal region,Yunnan Province and Xinjiang Uyghur Autonomous Region,but trend of northward shift of sites was *** unintentional introduction was primary invasion pathway recently,the percentage of intentional introduction almost equaled to of unintentional ***,Europe and Asia were main origins of IAS of *** number of IAS decreased from coastal region towards inland gradually.

关键词： Biological,Invasions Invasive alien species,Distribution,Drigin,China

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Pedosphere 2011年第1期21卷 31-36页

作者： LI Rong ZHENG Jin-Wei NI Bin CHEN Kai YANG Xiu-Juan LI Shun-Peng JIANG Jian-Dong Key Laboratory of Microbiological Engineering of Agricultural Environment Ministry of Agriculture College of Life Sciences Nanjing Agricultural University Nanjing 210095 (China)

A bacterial strain, pcnb-21, capable of degrading pentaehloronitrobenzene （PCNB） under aerobic and anoxic conditions, was isolated from a long-term PCNB-polluted soil by an enrichment culture technique and identified as Labrys portucalensis based upon its morphological, physiological and biochemical properties, as well as 16S rRNA gene sequence analysis. Effects of different factors, such as temperature and pH, on PCNB biodegradation were studied. Strain pcnb-21 efficiently degraded PCNB at temperatures from 20 to 30 ℃ and initial pH values from 4 to 7, which might be the first time that a Labrys strain was found capable of eflClciently degrading PC1NB. The degradation of PCNB was affected by oxygen, and the degradation decreased with increasing aeration. Exogenous electron donors such as glucose, lactic acid and succinic acid promoted the biodegradation of PCNB, while electron acceptors such as sodium nitrite, sodium sulfate, sodium nitrate and sodium sulfate inhibited PCNB biodegradation. The degradation of PCNB in sterile and non-sterile soils by a green fluorescent protein （GFP）-labeled strain, pcnb-21-gfp, was also studied. Cells of pcnb-21-gfp efficiently degraded 100 mg kg-1 PCNB in sterile and non-sterile soils and could not be detected after 42 days. Strain pcnb-21 might be useful in bioremediating PCNB-polluted soils and environment.

关键词： aeration bacterial strain electron acceptors electron donors sterile soil

Spatial hearing model based on spatial feature extraction and artificial neural network

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Chinese Journal of Acoustics 2000年第2期19卷 123-127页

作者： WU Zhenyang WANG Weibin (Department of Radio Engineering Southeast University nanjing 210018)

In spatial hearing, complex valued head-related transfer function (HRTF) can be represented as a real valued head-related impulse response (HRIR). By using Karhunen-Loeve expansion, the spatial features of the normalized HRIRs on measurement space can be extracted as spatial character functions. A neural network model based on Von-Mises function is used to approximate the discrete spatial character function of HRIR. As a result, a time-domain binaural model is established and it fits the measured HRIRs well.

关键词： HRTF HRIR MSE

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分布式协同入侵检测系统设计与实现

武汉理工大学学报 2010年第16期32卷 155-158页

作者：沈超薛胜军南京信息工程大学计算机与软件学院南京210044

提出了一种分布式协同入侵检测系统模型,并针对这种新模型设计了一套较完善的协同入侵检测算法和入侵检测引擎。同时,给出了分布式协同入侵检测系统的框架和各模块的功能。仿真实验验证了该系统的稳定性、可靠性和可扩充性,达到了预期... 详细信息

提出了一种分布式协同入侵检测系统模型,并针对这种新模型设计了一套较完善的协同入侵检测算法和入侵检测引擎。同时,给出了分布式协同入侵检测系统的框架和各模块的功能。仿真实验验证了该系统的稳定性、可靠性和可扩充性,达到了预期的结果。

关键词：入侵检测分布式协同

Isospin effects in pre-scission particle emission

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Isospin effects in pre-scission particle emission

区域生态安全评价指标体系选取的概念框架研究

2005年全国核反应会议

作者： Ye Wei (Department of Physics, Southeast University, nanjing 210096)

The influences of neutron-to-proton ratio N/Z of fissioning systems onparticle emission for isotopic sources of 189,202,212P0 and for isobaric sources of 212TJ, 212Po and 212Fr are investigated within the framework of Smoluchowski equation. It is shown that the multiplicity of emitted particles shows a strong dependence on the N/Z ratio of the fissioning sources. Calculations also show when the N/Z ratio of a fissioning system becomes large, charged-particle emission becomes no longer sensitive to viscosity strength, which means that for those systems with larger N/Z ratio, protons and alpha particles can not be employed as probes of extracting the value of viscosity coefficient in fission.

关键词：

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土壤 2003年第1期35卷 2-7页

作者：左伟周慧珍王桥南京师范大学地理科学学院南京210097 中国科学院南京土壤研究所南京210008

在全球区域和我国范围内,生态安全形势越来越严峻,局部地区的生态安全态势甚至已经损坏了社会经济与农业生产可持续发展的基础,但是从学术层面上的区域生态安全研究,尚未真正开展起来。本文研究建立的区域生态安全评价指标体系选取的概... 详细信息

在全球区域和我国范围内,生态安全形势越来越严峻,局部地区的生态安全态势甚至已经损坏了社会经济与农业生产可持续发展的基础,但是从学术层面上的区域生态安全研究,尚未真正开展起来。本文研究建立的区域生态安全评价指标体系选取的概念框架和提出的区域生态安全评价指标体系,将为区域生态安全评价研究和生态环境管理实践提供理论基础。

关键词：生态安全评价指标体系区域生态安全 P-S-R模型概念框架

Expression of P-glycoprotein and Estrogen Receptor in Hum an Prim ary ColorectalCarcinoma

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The Journal of Biomedical Research 1999年第2期23卷 61-64,69页

作者： Shen Lizong(沈历宗) Wu Wenxi(吴文溪) [WT5,5”BZ]Department of General Surgery, the First Affiliated Hospital of nanjing Medical University, nanjing 210029, P. R. China

The purpose of this study is to investigate the expression of estrogen receptor (ER) and P glycoprotein (Pgp) in human primary colorectal carcinoma and the relationship of ER and Pgp expressions with the biologic behaviors of the tumor. Sixty five patients undergoing colorectal cancer resection were enrolled. The case records and pathological reports were reviewed. Paraffin embedded tumor specimens from the 65 cases were examined. The expression of ER and Pgp were determined with immunohistological technique. The relationship between the expressions of ER and Pgp and clinical and pathological characteristics were evaluated. The investigations showed that the positive expression of ER and Pgp were detected in 75.4% and 73.8% of the tumor tissue respectively. The rates of positive expression of ER and Pgp were high in tumor tissues than in normal mucosa (P<0.05). ER expression in the tumor was independent of sex and age of the patients, size ,site and Duke′s stages of the tumors, so did the Pgp expression. The results show that ER and Pgp expression increased in the course of carcinogenesis of colorectal carcinoma. However, there was no strong evidence indicating that the expression of ER of Pgp was related to the clinical presentations and pathological stages.

关键词： multidrug resistance estrogen receptor colorectal carcinoma

EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR OF ENERGY-SAVING COMPOSITE CONCRETE SMALL-SIZED HOLLOW BLOCK WALL

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EXPERIMENTAL STUDY ON SEISMIC BEHAVIOR OF ENERGY-SAVING COMP...