基于J2EE的电子商务系统开发的研究     

张灵玲 《洛阳工业高等专科学校学报》2007,17(2):25-29

电子商务(Electronic Commerce)是通过互联网来实现网上购物、网上交易和在线电子支付的一种新型商务运营模式.对J2EE的三层体系结构、EJB技术、Web技术等相关技术进行了研究,在对电子商务需求进行分析的基础上,给出了一个电子商务网站的架构模板,对一些功能模块进行了设计,对电子商务网站的快速开发方法进行了一些探讨.  相似文献   

TiO2光催化剂固定化载体及固化方法   总被引：4，自引：0，他引：4  

黄艳娥  刘会媛 《唐山师范学院学报》2001,23(5):31-32,51

介绍了TiO2光催化剂载体的选拔依据和作用，阐述了纳米TiO2的固化方法。  相似文献   

Edaravone protects PC12 cells from ischemic-like injury via attenuating the damage to mitochondria   总被引：6，自引：0，他引：6  

Song Y  Li M  Li JC  Wei EQ 《Journal of Zhejiang University. Science. B》2006,7(9):749-756

Background： Edaravone had been validated to effectively protect against ischemic injuries. In this study, we investigated the protective effect of edaravone by observing the effects on anti-apoptosis, regulation of Bcl-2/Bax protein expression and recovering from damage to mitochondria after OGD （oxygen-glucose deprivation）-reperfusion. Methods： Viability of PC 12 cells which were injured at different time of OGD injury, was quantified by measuring MTT （2-（4,5-dimethylthia-zol-2-yl）-2,5-diphenyltetrazolium bromide） staining. In addition, PC 12 cells＇ viability was also quantified after their preincubation in different concentration of edaravone for 30 min followed by （OGD）. Furthermore, apoptotic population of PC 12 cells that reinsulted from OGD-reperfusion with or without preincubation with edaravone was determined by flow cytometer analysis, electron microscope and Hoechst/Pl staining. Finally, change of Bcl-2/Bax protein expression was detected by Western blot. Results： （1） The viability of PC12 cells decreased with time （1-12 h） after OGD. We regarded the model of OGD 2 h, then replacing DMEM （Dulbecco＇s Modified Eagle＇s Medium） for another 24 h as an OGD-reperfusion in this research. Furthermore, most PC 12 cells were in the state of apoptosis after OGD-reperfusion. （2） The viability of PC 12 cells preincubated with edaravone at high concentrations （1, 0.1, 0.01 μmol/L） increased significantly with edaravone protecting PC 12 cells from apoptosis after OGD-reperfusion injury. （3） Furthermore, edaravone attenuates the damage of OGD-reperfusion on mitochondria and regulated Bcl-2/Bax protein imbalance expression after OGD-reperfusion. Conclusion： Neuroprotective effects of edaravone on ischemic or other brain injuries may be partly mediated through inhibition of Bcl-2/Bax apoptotic pathways by recovering from the damage of mitochondria.  相似文献   

Academic Publishing in English: Exploring Linguistic Privilege and Scholars’ Trajectories     

Josep Soler 《Journal of Language, Identity & Education》2019,18(6):389-399

ABSTRACT

This paper explores the trajectories of six young academics (early-stage researchers) currently active in the context of Swedish academia in two different fields: English Linguistics and Political Science. Through a series of narrative interviews, the analysis investigates the development of their scholarly work, the relationship with their texts, and the negotiation of their position as contributors to their academic field. The paper discusses issues of language attitudinal and ideological nature, emphasising the need to focus on writers, rather than texts. The discussion revolves around the role of access to scholarly networks and to quality publication outlets as some of the key factors in shaping their development as young scholars and enabling opportunities to publish in highly-ranked journals. The goal of the article is to contextualise and problematize the notion of “privilege” that is customarily attributed to L1 English-speaking scholars, and to provide a more nuanced understanding of how young academics tackle the publishing enterprise.  相似文献   

基于J2EE+AJAX的分布式任务管理系统的应用研究     

胡锦丽 《三明学院学报》2006,23(4):422-425

结合J2EE与AJAX在计算机应用系统开发中的优势,构建了基于J2EE AJAX的分布式任务管理系统,并对系统中各模块的功能设计进行了描述,最后给出了系统的关键技术说明及其实现。  相似文献   

温室CO2施肥技术及研究进展   总被引：1，自引：0，他引：1       下载免费PDF全文

王精明  叶庆生  黄胜琴 《惠州学院学报》2003,23(3):63-67

本文就CO2施肥的历史和现状、CO2施肥的增产效应及机理、CO2施肥的主要方法等作了综述，在此基础上，提出了我国温室CO2施肥的科研和开发方向．  相似文献   

溴化[2—(5—己基—1,3—二氧环己烷——2—基)乙基]三乙基铵的合成<英>     

袁先友 《零陵学院学报》1992,(3)

以1—溴己烷,丙二酸二乙酯和丙烯醛为原料,经五步反应首次合成了溴化[2—(5—己基—1,3—二氧环己烧—2—基)乙基]三乙基铵(h).  相似文献   

互联网时代浙江中小企业电子商务应用研究   总被引：2，自引：0，他引：2  

钱栋霖 《丽水学院学报》2008,30(6):11-15

中小企业是浙江经济的重要组成部分,也是开展企业电子商务的重要力量。随着网络的普及,中小企业应用电子商务成为必然趋势。开展电子商务可以为中小企业弥补自身缺陷,提升竞争优势,带来新的发展机遇。采用B2B商业模式、加入BAB电子商务交易市场、实现电子商务与ERP系统的集成是浙江中小企业开展电子商务的重要途径。  相似文献   

卤代硅烷的醇解与应用   总被引：1，自引：0，他引：1  

陈忠云 《邵阳学院学报(社会科学版)》1997,(2)

本文着重讨论了卤代硅烷醇解反应的机理、条件与应用.  相似文献   

Polyethylenimine-cyclodextrin-tegafur conjugate shows anti-cancer activity and a potential for gene delivery     

Hu QD  Fan H  Lou WJ  Wang QQ  Tang GP 《Journal of Zhejiang University. Science. B》2011,12(9):720-729

Polyethylenimine-cyclodextrin-tegafur (PEI-CyD-tegafur) conjugate was synthesized as a novel multifunctional prodrug of tegafur for co-delivery of chemotherapeutic agent tegafur and enhanced green fluorescent protein (EGFP) reporter plasmid DNA. Conjugation of tegafur to PEI-CyD via chemical linkage was characterized by ¹H NMR spectrometry and ultraviolet (UV) spectrometry. PEI-CyD-tegafur was able to condense plasmid DNA into complexes of around 150 nm with positive charge at the N/P ratio of 25, in accordance with electron microscopy observation of compact and monodisperse nanoparticles. The results of in vitro experiments showed enhanced cytotoxicity and considerable transfection efficiency in B16F10 cell line. Therefore, PEI-CyD-tegafur may have great potential as a co-delivery system with anti-cancer activity and potential for gene delivery.  相似文献