基于决策支持的棉库管理系统设计与实现

根据棉库管理的业务需要,规划设计了基于决策支持的棉库管理系统平台总体框架。阐述了系统的平台架构及组成,分析了系统软件组成结构、系统开发工具及技术的选择、人机对话系统设计等系统的实现。     

对宁夏固原市做好水库防洪蓄水调度的对策及建议

实现控制洪水向洪水管理转变,从综合的角度考虑洪水,它不仅是灾害,在一定条件下也可能变成资源;从风险的角度去考虑洪水,它是有风险,在降低或转移同时会带来可观的收益。     

Study on the Stability of Blue-tongue Virus after Long Time Storage in Cold Room

In order to understand the stability of blue-tongue virus (BTV)storage in cold room for long time, 18 tissue samples which were kept in 4℃ for 10 to 15 years were test by Real-time PCR, and 10 blood samples which were kept in 4℃ for 15 years were subjected to virus isolation process, then was proved by monoclonal antibody staining,research results showed all old samples were positive in Real-time PCR, further more, 5 live virus were isolated from 10 old blood samples. The results suggested the stability of BTV was higher than we thought before.     

二氧化碳输送管道关键技术研究现状

碳捕集与封存作为减少温室气体排放的重要手段成为全球研究热点，管道运输是该技术得以实施的关键环节。当CO2处于超临界或密相状态时，其具有液体的密度、气体的粘性和压缩性，对于管道运输是最有效率的。由于管输CO2的特殊性质，CO2输送管道与碳氢化合物输送管道存在不同；由于海洋环境的复杂性，CO2海上输送管道与陆地输送管道存在不同。系统总结了实现CO2管道输送需要解决的关键技术问题，着重介绍了CO2输送管道流动保障和延性断裂扩展领域的研究进展，指出CCS作为大规模减少温室气体排放的重要选项，开展与之相关的基础研究十分迫切。（图3，参44）     

果蜡处理对低温贮藏下采后菠萝果实激素的影响

以菠萝品种‘巴厘’的果实为试材，研究果蜡处理对低温贮藏下采后菠萝激素的影响，结果表明：果蜡处理降低了冷藏菠萝果实脱落酸(ABA)、赤霉素(GA)和玉米素(ZR)含量，增加了吲哚乙酸(IAA)含量，并且ABA 和GA含量均与冷害指数极显著相关(P＜0.01)，相关系数分别是0.879和0.909。表明低温胁迫下采后菠萝的ABA和GA与抗冷性密切相关，果蜡处理降低了ABA和GA含量，从而提高菠萝抗冷性。     

Laboratory selection of resistance by the red flour beetle,tribolium castaneum (Herbst), to an atmosphere of low oxygen concentration

Adult populations of the red flour beetle,Tribolium castaneum (Herbst), were exposed for 40 generations to an atmosphere containing 99.5% N₂ and 0.5% O₂ at 95% RH, in order to select a strain resistant to the low oxygen concentration (LOC) atmosphere. Selection pressure was maintained at between 50% and 70% mortality. At the 40th generation comparison of sensitivity between the selected strain and the original non-selected strain indicated a resistance factor at the 50% mortality level (LT50) of x 5.2. However, throughout the selections, log-time against probit-mortality curves remained roughly parallel from generation to generation and the slope remained low. These findings indicate a multiplicity of genetic factors that at a high level of selection contribute together towards an adaptation of the insects to survival in the LOC atmosphere. Removal of selection pressure from a sub-population of the selected strain from the 13th to 21st generation revealed that resistance was partially retained with a decrease in resistance factor of 23%. Although the study revealed that the insects were able to develop a strain resistant to hypoxia, exposures were at 95% RH to minimize the desiccation effect. This does not reflect field situations, where ambient relative humidities are generally below 70%.     

Organoclays for controlled release of the herbicide fenuron

Organoclays were assayed as matrices in which to associate herbicides, with the aim of decreasing product losses that could give rise to water contamination from agricultural activities. Fenuron was selected as model of a very mobile and highly water-soluble herbicide. Two different organoclays of high (A-HDT) and low (H-C18) reversible fenuron sorption were selected. Herbicide-organoclay complexes were prepared from the two organoclays and with two different fenuron contents (20 and 40 g AI kg-1) and two different mixing times, so as to form a series of weak and strong complexes. The release of fenuron from those complexes into water and water/soil suspensions gave values of T50 (time to release 50% of the fenuron content) ranging from 0.3 min to 2400 h. The total fenuron released in these closed systems ranged from 48 to 80% of the fenuron in the complex. The organoclay type (high or low sorptivity) had the greatest influence on fenuron release, followed by the strong or weak complex, suggesting that herbicide-organoclay interactions are the main factors controlling release. Soil column leaching experiments showed fenuron-organoclay complexes to be effective in reducing the peak herbicide concentration in the leachate to a half (6 microns) or a quarter (3 microns) of that obtained from the free technical compound (12 microns). Herbicide lost through leaching was reduced from 78% for the free technical fenuron to 50-30%, depending on the organoclay used as carrier and the strength of the complex. Bioassay with ryegrass showed that the weak fenuron/H-C18 complex (40 g AI kg-1) gave the same herbicidal activity as technical fenuron. The potential suitability of low-sorptive organoclays for conferring slow-release properties on the fenuron complex has been demonstrated.     

蜡蚧轮枝菌防治植物病虫害研究进展

蜡蚧轮枝菌在蔬菜病虫害防治中有很大开发潜力。就蜡蚧轮枝菌的致病性、环境条件对其生长的影响、储藏期存活率及在生产中应用的概况的研究进展进行了综述。研究进展表明,该种真菌既可以防治粉虱、蚜虫、蓟马等蔬菜害虫,又可以防治蔬菜的白粉病、锈病等。     

昆虫病原线虫的贮存和剂型研究进展

阐述了昆虫病原线虫的贮存原理,介绍业已建立的昆虫病原线虫贮存方法及其优缺点,影响昆虫病原线虫贮存效果的主要因素,并讨论了昆虫病原线虫剂型制备方法。     

超干处理和贮藏对番茄和辣椒种子生活力和活力的影响

试验采用氧化钙为干燥剂对番茄和辣椒种子进行超平处理和贮藏，以研究其对种子生活力和活力的影响。结果表明，番茄种子水分降至3．77％、辣椒种子水分降至3．86％，未发现对种子生活力和活力有明显的影响；对不同含水量的番茄和辣椒种子室温密闭贮今6个月后的调查结果发现，超低水分种子生活力和活力较高，细胞膜能保持较好的完整性，脱氢酶活性和呼吸强度较高。由此可见超干贮藏有利于保持番茄和辣椒种子的生活力和活力。