农乐霉素(M18)对西瓜枯萎病的药效试验

田间试验结果表明,1%M18悬浮剂防治西瓜枯萎病有很好的效果,在西瓜苗期或田间发病初期用500倍稀释液灌浇根部,防治效果可达70%以上。     

LIVER SCINTIGRAPHY AND ULTRASONOGRAPHY FOR THE DIAGNOSIS OF FOCAL AND DIFFUSE DISEASES

The scintiphotos and ultrasonophotos of 186 patients with focal and diffuse diseases of liver were collected and analysed. All the data were get from the in-patients of China-Japan Friendship Hospital. The Sigma 438 typedγ camera (USA) was used. Fifteen min after 99mTc-phytate were injected i.v., If any defect region was found, it was recorded as a SOL; the SSA 90A, SAL 77A and SAL 50A US scanners (Japan) were used, if any abnormal echo pattern was found, it was a SOL. Of 134 patients have done both examinations during 7 days, 122 patients had coincident results occupied 91.0%. For detection of SOL, the sensitivity of scintigraphy is 94.1%, specificity is 94.2%, accuracy is 94.8%; the sensitivity of US is 100%, specificity is 89.7%, the accuracy is 95.6%. The hepatic blood flow and blood pool study showed that 104 from 115 patients were coincident (90.4%). The spleen and liver accumulation ratio determination showed that 51 from 64 subjects were coincident (80.0%). The characteristic features of scintigraphy and US graphy were described in hepatoma, hemangioma, cyst abscess and cirrhosis. The advantages of these examinations were discussed and concluded that their procedures are valuable and widely available.     

复杂制造环境下的改进非支配排序遗传算法

针对柔性作业车间多目标调度问题,在考虑机器、操作人员等资源约束和交货日期不确定性的基础上,构建了以加工成本、客户满意度及生产总流程时间为目标函数的模糊调度数学模型。针对传统的加权系数方法不能很好地解决柔性作业车间调度多目标优化问题的缺点,提出改进的非支配排序遗传算法,采用改进的拥挤密度排序法改善同一非劣等级内个体的排序;提出自适应交叉和变异策略,克服了种群早熟化,改善了算法的收敛速度;采用改进精英策略保持种群多样性,改善了算法的搜索性能。将该算法应用于某机械公司的人机双资源多目标柔性车间模糊调度,仿真结果证明了该方法的有效性和可行性。     

丙烯酸改性松香的合成工艺研究

松香在一定的条件下与丙烯酸发生Diels-Alder双烯加成反应,本文对影响反应的各因素,如反应温度、催化剂的质量用量、反应时间、原料配比等进行了系统研究,在此基础上,进行了正交实验,确定松香与丙烯酸的最佳反应工艺条件,即:反应温度230℃,催化剂的质量用量为松香质量的3.0%,反应时间为3.5 h,松香与丙烯酸的质量用量配比为4.5:1。经过三次稳定性实验证明,正交实验所得反应条件为最佳合成工艺,加成物含量均在86%左右。     

全位置螺柱焊在16万吨碳素煅烧窑、回转窑中的应用

介绍了采用螺柱焊方法将6万多颗锚固钉成功焊接在16万吨碳素煅烧窑、回转窑内壁上的情况。该方法不仅速度快、效率高、成本低、牢固可靠,而且有可观的经济效益。实现了φ22mm螺母组件全位置螺柱焊,使螺柱横焊和仰焊直径由国外普遍认为应小于等于φ16mm,提高到φ22mm。     

发酵法生产牛乳源活性肽

通过监测少孢根霉试验菌株Ros-N发酵牛乳过程中产生的各种生化变化,利用正交试验,以氨基氮和肽含量作为评价标准,综合考虑生产成本,确定最佳发酵条件。     

新庄油田泌浅67区综合治理方案

新庄油田位于泌阳凹陷北部斜坡带东段,区内地面条件良好,以平原和丘陵地形为主,主要种植小麦及多种经济作物,泌阳河自东向西流经该区。区域构造属于南襄盆地泌阳凹陷王集——新庄鼻状构造。     

基于工作流的多层网络化销售系统的研究与实现

通过对网络化销售系统特点的分析,从提高系统的可重用性、可维护性和易用性出发,提出一种适用于网络化销售系统的基于MVC(Model V iew Controller)架构和工作流思想的开发模式。给出系统的总体架构和主要部分的功能及实现方法,对工作流引擎和访问控制等关键技术进行详细分析,并将该模式应用到企业网络化销售系统开发中。