Nitric oxide suppresses stomatal opening by inhibiting inward-rectifying K_(in)~ channels in Arabidopsis guard cells

We explore nitric oxide (NO) effect on K in channels in Arabidopsis guard cells. We observed NO inhib- ited K in currents when Ca2 chelator EGTA (Ethylene glycol-bis(2-aminoethylether)-N,N,N′,N′-tetraacetic acid) was not added in the pipette solution; K in currents were not sensitive to NO when cytosolic Ca2 was chelated by EGTA. NO inhibited the Arabidopsis stomatal opening, but when EGTA was added in the bath solution, inhibition effect of NO on stomatal opening vanished. Thus, it implies that NO ele- vates cytosolic Ca2 by activating plasma membrane Ca2 channels firstly, then inactivates K in chan- nels, resulting in stomatal opening suppressed subsequently.     

SL(2,R)上的Hardy-Littlewood极大函数的性质

本文给出了SL(2,R)上的Hardy-Littlewood极大函数mf的定义,利用Ergodic定理证明了Hardy-Littlewood极大函数的强(p,p)型性质,p>1.     

基于J2EE的电子采购系统的集成设计

本文描述了业务流程再造（BPR）在整合新旧电子采购系统中的应用及J2EE实现过程,探讨了基于J2EE的BPR在电子采购系统中应用的科学性与可行性.     

基于J2EE的OEM节点锁的设计和实现

本文首先介绍了OEM软件产品中节点锁的概念和目前中间件技术J2EE的发展概况，然后阐述了OEM节点锁的体系结构，并着重分析了基于J2EE的OEM产品节点锁的设计原理和Java多线程技术，最后给出了应用实例以表明其有效性。     

基于J2EE体系结构实现网上购物系统

J2 EE体系结构采用组件的思想 ,将业务逻辑层从客户、服务器端独立出来 ,从而带来开发、使用和维护的便利 .在分析的基础上 ,给出了一个网上购物系统的设计模型和实现方法 .     

宜宾热源公司热电厂锅炉补给水处理工艺改造

分析了宜宾热源公司热电厂锅炉给水处理工艺的问题，指出因为原采用二级钠离子软化工艺水质不达标，造成频繁爆管，严重影响生产的不良后果．介绍了技术改造措施及效果：在原工艺基础上引入复床，将给水硬度控制在2．0μmol／L以下，碱度、氯根及电导率电得到控制，系统运行将近一年，水质稳定，锅炉运行正常安全，不仅消除了以前的生产隐患，而且节约了大量运行成本．     

分子筛负载HPA/TiO2催化剂的性能

报道了分子筛负载杂多酸和二氧化钛催化剂MS／HPA／TiO2的制备及其对品红溶液降解的效果，系统研究了催化品红溶液降解的优化条件。实验表明，MS／HPA／TiO2具有良好的催化活性且容易回收。当MS：HPA：TiO2=1：10：1，品红的浓度为0．005％（10mL），催化剂的用量为10mg，反应时间为10min，品红的降解率达到96．87％。     

Liquid-Liquid Equilibrium for 1-Butanol-Water-KF and 1-Butanol-Water-K2CO3 Systems

KF or K2CO3 was added into the 1-butanol-water system and two phases were formed： water-rich phase （water phase） and 1-butanol-rich phase （1-butanol phase）. The liquid liquid equilibrium （LLE） data for 1-butanol-water-KF and 1-butanol-water-K2CO3 systems were measured at 25℃ and showed that 1-butanol phase contained negligible salt and water phase contained negligible 1-butanol when the concentrations of KF and K2CO3 in the water phase were equal to or higher than 27.11% and 31.68% , respectively. Thus water could be separated efficiently from 1-butanol-water by adding KF or K2CO3 into the system. A theoretical calculation of LLE data was calculated by using the Pitzer theory to get water activity in the water phase, and by the models, such as the Wilson, NRTL or the UNIQUAC for the 1-butanol phase. For 1-hutanol-water-KF system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and Wilson equa tion, while for 1-butanol-water-K2CO3 system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and UNIQUAC eauation.