广西火桐种子质量分级标准研究

[目的]制定广西火桐种子质量分级标准.[方法]测定30批次广西火桐种子的净度、千粒重、含水量、生活力及发芽率共5项指标,应用SPSS 20.0软件对数据进行聚类分析,确定广西火桐种子质量分级标准.[结果]广西火桐种子被分为3个等级,其中达到二级及以上标准的种子认定为合格种子.种子含水量、千粒重、发芽率和生活力为广西火桐种子质量分级的主要指标,净度为参考指标.[结论]建立了广西火桐种子分级质量标准.     

芒果 ANS 基因的克隆及其序列分析

为了研究芒果果实中ANS基因的功能。利用同源克隆方法从芒果果实中克隆得到了一个ANS基因,该基因的cDNA长度为1252 bp,开放阅读框的长度为1056 bp,编码351个氨基酸。通过系统发育分析,发现该基因编码的蛋白与荔枝、葡萄、可可豆、桑树等聚在一类。通过序列对比分析表明,已经成功得到芒果ANS基因,并对其生物信息进行了分析,为下一步芒果ANS基因的功能研究打下了基础。     

冷藏车内温度场和湿度场的数值模拟研究

应用流体力学（CFD）软件Fluent,采用k-ζ流模型和非稳态求解方法,对加入货物冷藏车的温度场和湿度场进行了三维非稳态数值模拟计算．得到了冷藏车蒸发器区、中心区、货物区以及边壁等处的温湿度分布。冷藏车内流场的数值模拟结果可以为监测与控制冷藏车内的环境提供技术依据。     

A design method of embedded visual access control system

As the demand of home security is increasingly, we propose a program which based on wireless door access control system and describe the composition and overall scheme of the system. Outdoor machine which equips infrared camera communication with indoor center via wireless network. The indoor center applies ARM11 processor, and Android operating system to manage various application processes. Software and hardware design methods of indoor center are introduced in details,and outdoor machine and indoor center are manufactured for testing. Results show that the system is stable, has achieved the desired objects,can meet the needs of uses, and result demonstrates the feasibility of the design.     

Research on immunization strategies based on independent sets of complex networks

According to the concept of independent set, this paper proposes a new immunization strategy of complex networks which immunizes the nodes in an independent set with maximum degree, called targeted immunization in the independent set. When the total degree of immune nodes in independent set is equal to the total degree of targeted immunization nodes in the whole network, the immunization strategy of independent set is more effective than the targeted immunization strategy of the whole network. Based on the network structure, this paper explains the reason. Comparing the random immunization of independent sets with the random immunization in the whole network, test results indicate that more nodes do not be removed with high degree for the random immunization of independent sets. For classic susceptible-infected(SI) model, all nodes in the network are only two states: susceptible or infected. In the study of immunization strategies, comparing SI model with SIR, SIS models. The use of SI model will be more favorable.     

四川盆地单产9000 kg hm~(-2)以上超高产小麦品种产量结构与干物质积累特点

选择3个典型超高产品种和7个一般高产品种(对照)在4个环境(年份×地点)下考察其产量、产量构成因素和干物质积累、转运特点,以揭示四川盆地高温、高湿、弱光照生态条件下超高产小麦品种的产量形成特性,为超高产育种和生产提供依据。超高产品种在4个环境下的平均产量达9338 kg hm 2,比对照品种高24.2%;其穗数(449×104hm–2)、穗粒数(42.3)、粒数(18 825 m–2)、千粒重(47.8 g)分别比对照高8.2%、10.7%、18.3%和0.6%。超高产品种在各个生育阶段的干物质积累速率、干物质积累量都高于对照品种,尤其是生育前期,如在分蘖盛期和拔节期干物质积累量分别高11.1%和18.2%;同时,其干物质转运量、转运效率和对籽粒的贡献率也高于对照品种,成熟时非籽粒器官干物质所占比重较对照品种低1.2~3.5个百分点。小麦籽粒产量与各个生育阶段的群体干重和分蘖、拔节期的个体干重呈极显著正相关,超高产品种具有分蘖力强,前期生长旺盛、干物质积累多,后期分配到籽粒的干物质比例较高等特点,这是高产的生理基础。     

广东中北部超级稻五优308强化栽培技术

通过几年来的试验和推广示范,总结出五优308的强化栽培技术,以指导广东中北部和北部地区的水稻生产.     

Experimental Study on a Prestressed Frame of Two Spans Under Unsymmetric Load

By the experimental study on a full-dimensioned prestressed frame of two spans, the relative factors are analyzed such as relative height of equivalent compression zone in critical section, secondary moment, ratio of beam rigidity to column and development of cracks in the top of columns etc., which influence the moment distribution of the post-tensioned prestressed concrete frame from the side of internal force redistribution. It is believed that that the factors of relative height of concrete equivalent compression zone and secondary moment influence the moment modulation in most degree, and ratio of column rigidity to beam also plays a part in the moment modulation to some extent. Second, the plastic joints of frame with excessive spans exit in the span which endure the whole load, at last the whole frame is destroyed because of the destruction of the loading frame, the influence to the non-loading span is little.     

Effects of Different Processed Products of Radix Codonopsis on Intestinal Flora of Rats with Spleen Deficiency

[Objectives]This study aimed to observe the effects of different processed products of Radix Codonopsis on intestinal flora in rats with spleen deficiency.[Meth...     

针叶樱桃软糖的研制

以针叶樱桃粉为主要原料,通过正交试验确定软糖的最佳配方。结果表明,针叶樱桃软糖的最佳配方为针叶樱桃粉用量5 g,白砂糖用量35 g,麦芽糖浆用量50 g,柠檬酸用量0.6 g,明胶用量9 g,果胶用量0.5 g。在最佳工艺配方条件下,得到的产品糖体饱满、表面光滑细腻、软硬适中,具有针叶樱桃特有的风味。