弱光条件下桃光合作用的动态变化及品种差异分析

就日光温室桃树光合生理进行了详尽的研究,结果表明:1d中叶温与气温以14:00时较高。遮阴明显地降低了到达叶片表面的有效光合辐射、叶温与气温。桃叶片的光合速率日变化为双峰曲线,峰值大约出现在上午10:00与下午14:00时;不同品种弱光下的光合速率有明显的差异,以NJN较高,其次为五月火与麦香。遮阴降低了桃叶片的光合速率,以NJN光合速率降低的较少,说明NJN能适应设施栽培。气孔阻力与蒸腾速率则随着遮阴程度的增加而增加。桃中位叶的光合速率较幼叶高。     

凉山州高原粳稻开花习性研究

凉山州高原粳稻在自然环境中抽穗后3～4d开始开花，5～8d进入开花盛期，10～12d相继结束；1日内的开花时间主要集中在12：00～16：00；每朵颍花开花历时60～110min不等；闭花授粉粒和停止发育粒教因品种而异；水稻开花与颖壳内湿度、田间温度和生态区关系密切。     

不同花生品种侧枝发育动态与产量性状研究

花生一级侧枝发育具有不均衡性。第一、二对侧枝出现早，伸长快，其他一级侧枝出现晚，伸长慢。86036－26－1第一、二对侧枝发育相对较早，而其他一级侧枝发育较晚；海花1号和豫花1号第一、二对发育相对较晚，而其他一级发育较快；豫花7号和鲁花9号居中。海花1号一级侧枝及第一对侧枝的二级侧枝数最多，86036－26－1的一级侧枝数及第一对侧枝的二级侧枝数量少。在花针期之前第一对侧枝的伸长与主茎基本同步；花针期之后，第一对侧枝伸长速度超过主茎。86036－26－1的一级侧枝长及株高居首位。86036－26－1第一、二对侧枝饱果率，产量居第一，豫花7号居第二。海花1号虽然荚果数较多，但第一、二对侧枝孢果率较低，产量也较低；鲁花9号居中。     

Experimental Study on the Deformation Characteristics of Fine-Sandstone Under the Loading and Unloading Conditions

The deformation characteristics of the fine-sandstone is studied under the loading and unloading conditions at the three different deformation-rates and the two different stress-levels. The experimental results show that there is really the plastic-loop in the deformation curve for the loading deformation curve is different from the unloading deformation curve. But the plastic-loop is nearly unchangeable since the second circulate loading. The residual-deformation is be almost zero since the second circulate loading, and that the slope of the deformation curve increases as the deformation-rate increases, and that the residual-deformation increases as the stress-levels increases.     

Review on Synthesis Refrectory Nanoparticles

In general, the process of synthesis the refractory nanoparticles Is classified as solid state, liquid state and gaseity. The new progress and development in the study of refractory nanoparticles are investigated. The synthesis technology of the refrectory nanoparticle in liquid state is discussed mostly. The refrectory nanoparticles is synthesized by the liquid state. The characteristics and the structure of the refrectory nanoparticles have been studied in this paper.     

Load dynamic matching of supply and demand side based on the utilization of urban sewage heat energy

Flowing dynamic characteristics and its temperature dynamic characteristics of a three-level sewage pipe network in Chongqing were analyzed. A mall's building whole year load was simulated. In the adverse condition of wastewater flow, the market construction peak discharge heat was compared with the sewage heat load, the balance between the most adverse flow and the building demand was found. Explored supply and demand matching method between urban sewage and city building load in flow adverse condition to take full advantage of the urban sewage cold and hot resources. the composite system was adeptcd to make up the most unfavorable flow time of sewage average heat load and the construction load difference; it also puts forward principle of load sharing and control strategy aimed at compound system.     

四流T型中间包控流装置优化的水模拟分析

以某钢厂四流中间包为研究对象,根据相似原理建立了1∶3的物理模型。模型研究了不同结构的挡墙、导流孔和湍流抑制器对中间包内流动特性的影响。实验结果表明,“Y”型挡墙和梯形湍流抑制器(方案F)组合的控流装置能获得相对较优的实验结果。采用方案F的控流装置后,总体的死区比例从原型的23.69%降为8.02%,钢液能得到更为充分的混匀;各流平均停留时间的标准差从原型方案的23.56降低到7.34,各流一致性也得到了明显的改善。     

煤层气发动机工作特性的试验研究

为了解涡流室式煤层气发动机的工作特性和排放规律,在不同负荷下,进行了燃用三种不同甲烷浓度的煤层气试验。试验结果显示:涡流室式燃烧系统能稳定燃烧甲烷浓度变化剧烈的煤层气;相同工况下,发动机的缸内峰值压力随甲烷浓度的降低而增加,但压力升高率的变化很小;甲烷浓度达到一定值时,甲烷浓度和负荷对主燃期的影响很小;煤层气发动机的CO和HC排放随甲烷浓度和负荷的增加而降低,NOx排放则相反。     

供水系统摇蚊污染特征的调查和分析

供水流程中的摇蚊污染影响水厂生产和自来水水质，S市水厂进行的摇蚊污染特征调查结果表明，污染水厂的摇蚊优势种是花翅摇蚊，水厂孳生的摇蚊来源于进厂原水，摇蚊主要孳生分布在水厂沉淀池。水厂沉淀池形成摇蚊污染的主要原因有：原水的悬浮物和丰富的藻类，沉淀池的温度、溶解氧、pH值，摇蚊幼虫对氯离子和混凝剂浓度的较强耐受性。     

电控喷油器流量特性试验台的设计与试验

论述了开发电控喷油器微机测试系统的意义;为检测电喷发动机喷油性能,介绍了所以8098为核心的喷油器流量试验台;阐述了喷油器流量试验台设计思想、硬件结构和软件设计方法.以高阻型喷油器为例,在整个流量范围内对其进行测试,并对测试数据加以分析总结,得出了该喷油器流量特性的一些重要参数.目前,电控喷油器微机测试系统已投入使用,取得了良好的实际效果.