检索结果-南通市图书馆

Agricultural Sciences in China 2010年第10期9卷 1504-1511页

作者： CHEN ji-gang College of Biological and Environmental Sciences Zhejiang Wanli University Ningbo 315100 P.R.China Municipal Key Laboratory of Microorganism and Environmental Engineering Ningbo 315100 P.R. China College of Fisheries Huazhong Agricultural University Wuhan 430070 P.R. China

Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide （LPS）, and the effect of the LPS inducing some innate immunity parameters was investigated in Japanese sea bass, Lateolabrax japonicus. The results showed that the LPS could enhance the phagocytosis activity, lysozyme activity, and bacteriolytic activity in ***, significantly （P〈0.05） at 1, 7, 14, 21, 28, and 35 d after LPS-injection. The indexes of three parameters increased to the peak of value at 28th d post LPS-injection. Moreover, RT-PCR analysis suggested that LPS significantly up-regulated the expression of both IL-8 and hepcidin in several tissues. These data suggest that the LPS extracted from Glaciecola polaris strain ARK149 can induce innate immunity in L. japonicus.

关键词： Lateolabraxjaponicus Glaciecola polaris lipopolysaccharide innate immunity RT-PCR

Hydrodynamics and Water Quality: Modeling Rivers, Lakes, and Estuaries

在线全文

学校读者我要写书评

暂无评论

Power Efficient Sub-Array in Reconfigurable VLSI Meshes

2008年

作者： Zhen-gang ji

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2005年第5期20卷 647-653页

作者： ji-gang Wu Thambipillai Srikanthan Centre for High Performance Embedded Systems School of Computer Engineering Nanyang Technological University Singapore 639798

Given an m × n mesh-connected VLSI array with some faulty elements, the reconfiguration problem is to find a maximum-sized fault-free sub-array under the row and column rerouting scheme. This problem has already been shown to be NP-complete. In this paper, new techniques are proposed, based on heuristic strategy, to minimize the number of switches required for the power efficient sub-array. Our algorithm shows that notable improvements in the reduction of the number of long interconnects could be realized in linear time and without sacrificing on the size of the sub-array. Simulations based on several random and clustered fault scenarios clearly reveal the superiority of the proposed techniques.

关键词： degradable VLSI mesh reconfiguration heuristic algorithm fault-tolerance NP-complete

EFFECTIVENESS OF REGIONAL TOURISM INTEGRATION—Case of Quadrangle Economic Cooperation Zone in Great Mekong Region

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 2006年第2期16卷 141-147页

作者： XU Hong-gang BAO ji-gang ZHOU Chang-chun Center for Tourism Planning and Research SUN Yat-Sen University Guangzhou 510275 P. R. China

The Quadrangle Economic Cooperation Zone in Great Mekong Region, where the Golden Triangle is located, is composed with the border areas of China, Laos, Thailand and Myanmar. The poorest and inaccessible remote Golden Triangle now faces the opportunity to develop and participate in the global economic system. Not only has the traditional border tourism between two countries in this region been growing rapidly and various tourism products cross the regions also have been developed. The article attempts to explore the multiplier effects of tourism on regional cooperation. These consequences of tourism cooperation take effect through the infrastructure improvement, facilitation of the flee movement, improvement of communication and promotion of the alternative economy. The study also points out the unexpected negative consequences to limit its role as a regional cooperative engine due to the lack of consideration of the dual economic and social structure in tourism development. The special attention should be drawn to consider the limited benefits for the marginalized community, the high transaction of the social costs related with the drug tourism and sex tourism. The paper calls for more rigorous cooperative regional plans and policies to the complexity of tourism development in this region.

关键词： Quadrangle Economic Cooperation Zone regional tourism cooperation feedback analysis Mekong River

ROLE OF INTERVENING OPPORTUNITY IN TOURIST DESTINATION DEVELOPMENT

在线全文

学校读者我要写书评

暂无评论

Chinese Geographical Science 2005年第4期15卷 368-376页

作者： PAN Li-li BAO ji-gang Center for Tourism Planning ＆ Re search SUN Yat-Sen University Guangzhou 510275 P. R. China College of Management Zhejiang University Hangzhou 310010 P. R. China

Intervening opportunity is an important factor in spatial interaction, and has very important impacts on tourist destination development in a region. There are few literatures on this topic in tourist researches, and especially in China fewer tourist researchers pay attention to intervening opportunity theory. This article, taking Lin’an as a case study, aims to introduce intervening opportunity theory in tourist destination development by the comprehensive ana-lysis of some data including literatures, Internet information, longitudinal data and some tourist surveys. Both qualitative and quantitative methods are all used in this research. Firstly, the authors expatiate upon the definition of intervening opportunity, by reviewing the literatures in detail, take Lin’an of Zhejiang Province as a case study, and then analyze some necessary factors of intervening opportunity, such as regional tourist demands and supplies, tourist attractions, spatial distance and transportation, tourist images and costs, regional competition and cooperation in tourist destinations. Finally the impacts of intervening opportunity on Lin’an tourist development are analyzed in detail. The results show that intervening opportunity do not occur everywhere, and there must be some critical factors, and intervening opportunity surely plays important roles in tourist destination development. The tourist development in Lin’an is attributed to intervening opportunity of the spatial location between Hangzhou and Huangshan that are two famous tourist cities in China, and the occurrence of intervening opportunities in Lin’an is the integration of some external and internal factors.

关键词： intervening opportunity theory spatial competition Lin'an Huangshan Hangzhou

The Association between Lower Incisal Inclination and Morphology of the Supporting Alveolar Bone—A Cone-Beam CT Study

在线全文

学校读者我要写书评

暂无评论

International Journal of Oral Science 2009年第4期1卷 217-223页

作者： Quan Yu Xiao-gang Pan Guo-ping ji gang Shen Shanghai Key Laboratory of Stomatology Department of Orthodontics Shanghai Ninth People＇s Hospital Affiliated toShanghai Jiao Tong University School of Medicine Shanghai China

Aim To investigate the relationship between the positioning of the lower central incisor and physical morphology of the surrounding alveolar bone. Methodology Thirty-eight patients （18 males, 20 females）, with mean age of 13.4 years, were included in this study. As part of orthodontic treatment planning the patients were required to take dental Cone-beam CT （CBCT） covering the region of lower incisors, the sur- rounding alveolar bone and the mandibular symphysis. The cephalometric parameters were designed and measured to indicate the inclination of lower central incisor and physical morphology of the adjacent alveolar bone. Computer-aided descriptive statistical analysis was performed using SPSS 15.0 software package for Windows. A correlation analysis and a linear regression analysis between the incisor inclination and the alveolar bone morphology were performed. Results Significant positive correlations were found between the lower central incisor inclination and the morphological contour of the alveolar bone （P〈0.05）. The lower central incisor root apex was closer to the lingual alveolar crest when it was buccally inclined. Conclusion The morphology of the alveolar bone may be affected by incisal inclination.

关键词： Cone-beam CT (CBCT) alveolar bone incisorinclination

EXPERIMENTAL RESEARCH ON RADIATION FROM DOUBLE CYLINDRICAL STRUCTURES

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2006年第2期18卷 156-160页

作者： ji gang ZHANG Wei-kang ZHOU Qi-dou Department of Naval Architecture and Ocean Engineering Naval University of Engineering Wuhan 430033China

An experiment on radiation from double cylindrical structures was held in an open-air pond. Radiation responses from one-point harmonic force driven model and two-point stochastic forces driven model were measured. Nu... 详细信息

关键词： acoustic radiation experiment double cylindrical structure

Polarization of ∧'s Produced in S+Pb Collisions at 200 GeV/c per Nucleon

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1996年第5期13卷 351-354页

作者： YE Yun-xiu SU Shu-fang ji gang Department of Modern Physics University of Science arid Technology of ChinaHefei 230027 Department of Special Class for Gifted Young University of Science arid Technology of ChinaHefei 230027

The ∧^(0) polarization is analyzed with the experinental data in S+Pb collisions at energy 200GeV per nucleon,which were produced at SPS of *** *** rxalue and thecorrelation betrween the transverse polarization and transverse momentum were obtained in Feyn-man parameter x_(F)>0,r_(F)<0 and all *** results show that the non-polarization of lamb-da appears in the vegion of larger transterse momenta,say,at 1-2 GeV/c in P_(T).The originsof polarization reduction are discussed.

关键词： GeV/c transverse Polarization

A long term calibration and verification of a submerged aquatic vegetation model for Lake Okeechobee

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2013年第1期2卷 232-244页

作者： Kang-Ren jin Zhen-gang ji South Florida Water Management District P.O.Box 24680West Palm BeachFL 334164680USA Department of Civil Engineering Catholic University of AmericaPangborn HallRoom G12WashingtonDC 20064USA

Introduction:Submerged aquatic vegetation(SAV)has multiple functions in Lake *** provides critical habitat for fish and wildlife,stabilizes sediments,reduces phosphorus(P)concentration in the water column by preventing re-suspension of P-rich sediments,and provides a substrate for attached algae,which also helps to remove P from the water *** year water quality and SAV growth simulations are presented and compared with observed SAV and water quality data collected in the nearshore zone in Lake ***:The SAV theory and approach used in the LOEM are modified from the Chesapeake Bay model and incorporate three state variables:shoots(above the bed sediment),roots(in the bed sediment),and epiphytes(attached to the shoots).The SAV model has direct linkages with the water quality model,including(1)a link between the growth and decay of SAV and the nutrient pool of the water quality model;(2)a link between the photosynthesis and respiration of SAV and dissolved oxygen dynamics,and(3)the ways in which settling of particulate organic matter and nutrient uptake affect nutrient levels in the water column and in the sediment ***:Total suspended solids affect light attenuation and are another major driving factor for SAV growth in the nearshore and littoral zone *** model performs reasonably well in reproducing the spatial distribution of ***:The theoretical analysis and model sensitivity tests indicate that SAV growth is primarily controlled by light and *** light available for SAV growth depends on the water depth and the *** this full scale simulation,the water depth comes from the LOEM hydrodynamic model,and the turbidity depends on the suspended sediment concentration and algal concentration.

关键词： Submerged aquatic vegetation(SAV) SAV modeling Lake Okeechobee Long term simulation

A super wear-resistant coating for Mg alloys achieved by plasma electrolytic oxidation and discontinuous deposition

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2023年第8期11卷 2939-2952页

作者： Xixi Dong Mingxu Xia Feng Wang Hailin Yang gang ji E.A.Nyberg Shouxun ji College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Brunel Centre for Advanced Solidification Technology(BCAST) Brunel University LondonUxbridge UB83PHUK School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Metallurgy and Materials University of BirminghamBirmingham B152TTUK State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Univ.Lille CNRSINRAECentrale LilleUMR 8207-UMET-UnitéMatériaux et TransformationsF-59000 LilleFrance Kaiser Aluminum Spokane ValleyWA 99216USA

Magnesium alloys are lightweight materials with great potential,and plasma electrolytic oxidation(PEO)is effective surface treatment for necessary improvement of corrosion resistance of magnesium ***,the∼14µm thick and rough PEO protection layer has inferior wear resistance,which limits magnesium alloys as sliding or reciprocating parts,where magnesium alloys have special advantages by their inherent damping and denoising properties and attractive *** a novel super wear-resistant coating for magnesium alloys was achieved,via the discontinuous sealing(DCS)of a 1.3µm thick polytetrafluoroethylene(PTFE)polymer layer with an initial area fraction(A_(f))of 70%on the necessary PEO protection layer by selective spraying,and the wear resistance was exceptionally enhanced by∼5500 times in comparison with the base PEO *** initial surface roughness(Sa)under PEO+DCS(1.54µm)was imperfectly 59%higher than that under PEO and conventional continuous sealing(CS).Interestingly,DCS was surprisingly 20 times superior for enhancing wear resistance in contrast to *** induced nano-cracks that splitted DCS layer into multilayer nano-blocks,and DCS also provided extra space for the movement of nano-blocks,which resulted in rolling friction and nano ***,DCS promoted mixed wear of the PTFE polymer layer and the PEO coating,and the PTFE layer(HV:6 Kg·mm^(−2),A_(f):92.2%)and the PEO coating(HV:310 Kg·mm^(−2),A_(f):7.8%)served as the soft matrix and the hard point,***,the dynamic decrease of Sa by 29%during wear also contributed to the super wear *** strategy of depositing a low-frictional discontinuous layer on a rough and hard layer or matrix also opens a window for achieving super wear-resistant coatings in other materials.

关键词： Magnesium alloy Coating Plasma electrolytic oxidation Discontinuous deposition Wear resistance Mechanism