彩信在水稻生长环境监测系统中的应用研究

为了解决农场园区水稻生长环境监测系统中没有接入有线互联网的问题,基于DELPHI平台开发使用短信查询,以彩信反馈的方式对园区水稻生长环境进行了实时监测。该系统可以随时随地使用手机监测农场园区水稻生长环境,为农场园区水稻生长环境监测数据提供了工具。     

Two Types Modules for the Boiler Attached to 330 MW Unit

Boiler is an important facility in power plant , the safety and economy of unit is affected by it. Studying the dynamic of boiler can improve the knowledge about boiler , which is important for. Features of MMS are introduced based on MMS simulation setting, and the real time capable module and non real time capable module are compared from principle. Real time capable dynamic model of boiler and non real time capable dynamic model of boiler of 330 MW unit are established . The experimental results show that the dynamic process of two type model accords with the mechanism of the object , at the same time, the validity of real time capable module is discussed .     

茉莉花茶和复方茶防止小鼠急性肾衰竭的研究

茉莉花茶、中药和复方茶对急性肾衰竭小鼠的生化及免疫功能试验结果表明，２．５％花茶、２．５％复方茶和０．３％的中药均能明显降低急性肾衰竭小鼠血清中分子物质（ＭＭＳ）含量。２．５％复方茶能显著降低肾衰竭小鼠血清尿素氮含量，而花茶和单纯中药的作用不明显。花茶、中药、复方茶均可显著促进小鼠脾Ｔ、Ｂ淋巴细胞增殖反应，而且都能增强小鼠脾淋巴细胞ＩＬ－２、ＩＬ－３的活性。文中还对花茶和复方茶保护肾功能的机理进行了讨论。     

基于GPRS的农业病虫害图像无线传输系统设计

基于GPRS的农业病虫害图像无线传输系统以ST℃12单片机为核心,控制串口摄像头拍摄农业病虫害图片,并将该图片通过GPRS模块SIM300以彩信形式发送到预先设定好的农户和专家的手机和电子邮箱中.该系统解决了通信电缆无法覆盖绝大部分农田以及专家受地域和人数限制不能达到现场的困难,实现了对农业病虫害的无线监控功能.     

大学生党建与思想政治工作教育系统设计——以彩信技术为例

大学生党建与思想政治工作通常采用发放文件、集中学习的方法。传统手段略显陈旧,互动教学效果差,学生难以妥善安排学习时间。如果能应用大学生乐于接受的彩信技术实现移动教学,可充分利用学生的闲暇时间,提高互动教学效果。基于GPRS MODEM硬件基础,应用了彩信控件二次开发,开发了党建与思想政治工作教育系统,开办了多个党建与思想政治工作教学栏目,实现了彩信发送、短信的收发。     

A Dynamic Mathematical Model of Ball Pulverized Storage System and Its Simulation with MMS

This paper presents a mathematical model , simulating program and results ofball pulverlzed coal storage system. The program of simulation is writen with ACSL language. theGear arithmetics to solve the differentlal equations is recom merded by MMS. The model has beenmodularized according to the reguirements of MMS. This modular called DTM modular can be con-sidered as one component of MMS modular library.     

甲基磺酸甲酯处理毛泡桐丛枝病幼苗的形态变化及SSR分析

 在真核生物中,DNA甲基化可导致基因特异表达、细胞分化和染色体失活等［1,2］,可在不改变DNA碱基排列顺序的同时,阻断遗传信息的传递,从而引起形态等性状的变化［2］。泡桐(Paulownia spp.)是我国重要的速生用材和绿化树种之一,对改善我国生态环境和提高农民收入具有重要的意义,但丛枝病发生给我国泡桐生产造成了巨大的经济损失,也严重影响了人们种植泡桐的积极性。自从发现泡桐丛枝病病原为植原体以来,人们对其病原和丛枝病发生的生理生化变化进行了大量的研究［3,4］,但对寄主 染病泡桐本身分子生物学研究较少。近年来,虽然科技工作者对丛枝病泡桐蛋白质组和DNA甲基化水平开展了一些研究工作［4］,但至今国内外未见有关DNA甲基剂对泡桐丛枝病发生影响的文献报道。因此,本文以毛泡桐丛枝病组培苗为材料,利用巢式PCR和SSR技术,研究了DNA甲基剂 甲基磺酸甲酯（MMS）对毛泡桐丛枝病发生和DNA碱基序列的影响。     

基于GPRS模块温室小气候预警查询系统设计

传统的电话传真、广播电视、网络、手机短信等气象信息发布在实际运用中难以针对特定客户提供设施农业温室作物长势和小气候气象数据及温室外天气状况的预警查询服务的问题,研究依托业务运行的天津市设施农业远程监控系统,以GPRS模块为基础,通过VB.NET编程语言,SQL server数据库平台,以Client/Server为构架,建立了基于GPRS模块的设施农业预警查询系统,通过电话、短信等接入手段,以短信、彩信自动回复方式为媒介,实现了温室小气候的实时查询、灾害天气的多极自动预警、发布一体化,提高了设施农业气象预警信息的准确率及查询制作发布的时效性和针对性。     

Model Building and Simulation for Subcritical Pressure Boiler

In order to meet the demand of large scale boiler design and operating optimization, this paper establishes the dynamic mathematic model for domestic 600MW subcritical pressure boiler. MMS software is adopted in the whole process from modeling to simulation. This software make process simple and quick. This model is based on modulariza- tion and the comprehensive physical and chemical process in boiler is considered. Simulation result shows that the re- sponses of this model under different disturbance are coincident to mechanics analysis. The simulation result under ste Pdisturbance can be used to analyze unit changes and provide some guide and it also can supply performance reference data to boiler design.     

Comet assay in gill cells of Prochilodus lineatus exposed in vivo to cypermethrin

Agricultural chemicals can induce genetic alterations on aquatic organisms that have been associated with effects on growth, reproduction and population dynamics. The evaluation of DNA damage in fish using the comet assay (CA) frequently involves the utilization of erythrocytes. However, epithelial gill cells (EGC) can be more sensitive, as they are constantly dividing and in direct contact with potentially stressing compounds from the aquatic environment. The aim of the present study was to evaluate (1) the sensitivity and suitability of epithelial gill cells of Prochilodus lineatus in response to different genotoxic agents through the application of the CA, (2) the induction of DNA damage in this cell population after in vivo exposure to cypermethrin. Baseline value of the CA damage index (DI) for EGC of juvenile P. lineatus was 144.68 ± 5.69. Damage increased in a dose-dependent manner after in vitro exposure of EGC to methyl methanesulfonate (MMS) and H₂O₂, two known genotoxic agents. In vivo exposure of fish to cypermethrin induced a significant increase in DNA DI of EGC at 0.150 μg/l (DI: 239.62 ± 6.21) and 0.300 μg/l (270.63 ± 2.09) compared to control (150.25 ± 4.38) but no effect was observed at 0.075 μg/l (168.50 ± 10.77). This study shows that EGC of this species are sensitive for the application of the CA, demonstrating DNA damage in response to alkylation (MMS), oxidative damage (H₂O₂), and to the insecticide cypermethryn. These data, together with our previous study on DNA damage induction on erythrocytes of this species, provides useful information for future work involving biomonitoring in regions where P. lineatus is naturally exposed to pesticides and other genotoxic agents.