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Using a statistical model for simulating tropical cyclone （TC） formation and a trajectory model for simulating TC tracks, the influence of the El Nino-Southern Oscillation （ENSO） on the peak-season （July-September） TC prevailing tracks in the western North Pacific basin is assessed based on 14 selected El Nino and 14 selected La Nina years during the period 1950-2007. It is found that the combination of statistical formation model and a trajectory model can simulate well the primary features of TC prevailing tracks on the interannual timescale. In the El Nino years, the significant enhancement of TC activity primarily occurs south of 20°N, especially east of 130°E. TCs that take the northwestward prevailing track and affect East Asia, including Taiwan Island, the Chinese mainland, Korea, and Japan, tend to move more westward in the El Nino years, while taking a more northward track in the La Nina years. Numerical simulations confirm that the ENSO-related changes in large-scale steering flows and TC formation locations can have a considerable influence on TC prevailing tracks.

从高校图书馆自身发展及面向企业开展特色数据库营销的必要性着手,根据企业特点,提出立足校企合作下的特色数据库服务模式框架。

G252.6; 近年来国内图书馆界对高校图书馆学科服务的研究日趋活跃,对近五年(2008年-2012年)国内主要学术基础上发表的研究成果进行总结,归纳出高校图书馆学科服务研究的6个重点,分别是:高校图书馆开展学科服务必要性;高校学科服务的特点;学科服务的内容和模式;学科服务体系要素研究;国内开展学科服务的实践研究,国(境)外开展学科服务的实践研究.这些反映了国内近五年高校图书馆学科服务理论研究的概况.

从高校图书馆自身发展及面向企业开展特色数据库营销的必要性着手,根据企业特点,提出立足校企合作下的特色数据库服务模式框架.

随着Web3．0技术的日趋成熟，图书馆信息服务面临着前所未有的挑战，它改变了传统的信息服务模式，真正实现了用户的互动参与，彰显了用户的个性化特征。文章介绍了Web3．0的发展历程及其技术特征，分析了web3．0环境下的图书馆信息服务面临的挑战，探讨了在Web3．0环境下图书馆信息服务工作的创新。

G250; 随着Web3.0技术的日趋成熟,图书馆信息服务面临着前所未有的挑战,它改变了传统的信息服务模式,真正实现了用户的互动参与,彰显了用户的个性化特征.文章介绍了Web3.0的发展历程及其技术特征,分析了Web3.0环境下的图书馆信息服务面临的挑战,探讨了在Web3.0环境下图书馆信息服务工作的创新.

Pyropia yezoensis, an intertidal seaweed, experiences regular dehydration and rehydration with the tides. In this study, the responses of P. yezoensis to dehydration and rehydration under high and low CO2 concentrations ((600–700)×10−6 and (40−80)×10−6, named Group I and Group II respectively) were investigated. The thalli of Group I had a significantly higher effective photosystem II quantum yield than the thalli of Group II at 71% absolute water content (AWC). There was little difference between thalli morphology, total Rubisco activity and total protein content at 100% and 71% AWC, which might be the basis for the normal performance of photosynthesis during moderate dehydration. A higher effective photosystem I quantum yield was observed in the thalli subjected to a low CO2 concentration during moderate dehydration, which might be caused by the enhancement of cyclic electron flow. These results suggested that P. yezoensis can directly utilize CO2 in ambient air during moderate dehydration.

The red alga Gracilariopsis lemaneiformis (Bory) is an economically valuable macroalgae. As a means to identify the sex of immature Gracilariopsis lemaneiformis, the amplified fragment length polymorphism (AFLP) technique was used to search for possible sex- or phase-related markers in male gametophytes, female gametophytes, and tetrasporophytes, respectively. Seven AFLP selective amplification primers were used in this study. The primer combination E-TG/M-CCA detected a specific band linked to male gametophytes. The DNA fragment was recovered and a 402-bp fragment was sequenced. However, no DNA sequence match was found in public databases. Sequence characterized amplified region (SCAR) primers were designed from the sequence to test the repeatability of the relationship to the sex, using 69 male gametophytes, 139 female gametophytes, and 47 tetrasporophytes. The test results demonstrate a good linkage and repeatability of the SCAR marker to sex. The SCAR primers developed in this study could reduce the time required for sex identification of Gracilariopsis lemaneiformis by four to six months. This can reduce both the time investment and number of specimens required in breeding experiments.

It is important and difficult to control the temperature of mass concrete structure during high arch dam construction.A new method with decision support system is presented for temperature control and crack prevention.It is a database system with functions of data storage,information inquiry,data analysis,early warning and resource sharing.Monitoring information during construction can be digitized via this system,and the intelligent analysis and dynamic control of concrete temperature can be conducted.This method has been applied in the construction of the Dagangshan Arch Dam in China and has proven to be very convenient.Based on the decision support of this system and the dynamic adjustment of construction measures,the concrete temperature of this project is well-controlled.