Ecological Technology Strategy-the Typologic Analysis and Research of Double-Skin Facade

As a renovation envelope, double-skin facade has the characteristics of environmental function and unique aesthetic effect. In this paper, the composition and functional characteristics of double skin facade is introduced briefly, its development history and a detailed typologic analysis combined with typical cases is reviewed. It is pointed out that the double skin facade has a bright future in 21~(st) century and the function and aesthetics are the footstone for its typologic research.     

人民公社阶段的农地产权制度变迁及其绩效

研究人民公社阶段的农地产权制度变迁与绩效，是为了分析人民公社制度得以长期维持的原因，以期为新时期农村经济体制改革提供启示与借鉴。文章在相关文献资料的基础上，采用实证描述与规范研究分析方法，探讨人民公社阶段的农地产权制度的演进、特征、变迁的原因、内在缺陷以及制度绩效，研究表明，人民公社阶段农地产权严重残缺、缺少激励机制、组织管理费用高昂，这种制度安排实际上一开始就处于非均衡状态，依靠国家主流的意识形态和超经济强制来维持，致使人民公社阶段农地产权制度效率低下。改革开放后，中国社会政治和意识形态方面的约束放松，获取存在于人民公社制度之外的巨大外部利润，推动了农地产权制度创新。     

电控柴油机泵喷嘴技术

为了提高柴油机的动力性、燃油经济性,降低排放(浮游颗粒PM和NOx)和噪声,优良的混合气准备是解决以上问题的关键因素。这要求高效喷射系统产生高喷射压力,确保燃油雾化良好,并且还必须精确控制喷油始点和喷油量。研究结果表明,本文介绍的泵喷嘴技术可以满足这一严格要求。泵喷嘴技术的关键是把喷油泵和喷嘴合成一体,以省去高压油管并获得高喷射压力。     

泵及其系统失压特性研究与计算

通过试验表明,在突然停泵和突然关闭泵出口阀两种失压工况下，系统中流量和压头出现振荡，水流出现正、反向交替流动，同时伴有空穴的产生、发展和溃灭，使全系统进入瞬变工况。阀突然关闭造成的泵出口管路高压，使泵出口压头呈现先突然升高再快速下降的振荡曲线，它反映出系统失压对泵组运行的影响是明显的。用固定波速无气体释放模型和变波速有气体释放模型对管系中的瞬变工况进行了计算。压头计算结果与试验结果较接近，而计算的空穴变化规律只在初始阶段较为符合。试验结果和计算结果的差异反映了真实泵系统的复杂和数值计算模型的不足。     

适应排灌行业需要 建设岗位培训制度——由江苏理工大学流体机械工程技术中心连续15年举办培训班引发的思考

由排灌机械行业的现状 ,结合江苏理工大学流体机械工程技术中心 15年来举办培训班的实践 ,提出了培养一大批掌握现代科学技术的工程技术人员和高素质员工是促进排灌事业发展最直接、最有效的措施 ,而制定和完善岗位培训制度是这一措施规范化、制度化、科学化的保证。文章阐述了岗位培训的概念 ,对建立岗位培训制度的原则、框架和体系作了探讨。     

Evaluation of the RZWQM-CERES-Maize hybrid model for maize production

The root zone water quality model (RZWQM) was developed primarily for water quality research with a generic plant growth module primarily serving as a sink for plant nitrogen and water uptake. In this study, we coupled the CERES-Maize Version 3.5 crop growth model with RZWQM to provide RZWQM users with the option for selecting a more comprehensive plant growth model. In the hybrid model, RZWQM supplied CERES with daily soil water and nitrogen contents, soil temperature, and potential evapotranspiration, in addition to daily weather data. CERES-Maize supplied RZWQM with daily water and nitrogen uptake, and other plant growth variables (e.g., root distribution and leaf area index). The RZWQM-CERES hybrid model was evaluated with two well-documented experimental datasets distributed with DSSAT (Decision Support System for Agrotechnology Transfer) Version 3.5, which had various nitrogen and irrigation treatments. Simulation results were compared to the original DSSAT-CERES-Maize model. Both models used the same plant cultivar coefficients and the same soil parameters as distributed with DSSAT Version 3.5. The hybrid model provided similar maize prediction in terms of yield, biomass and leaf area index, as the DSSAT-CERES model when the same soil and crop parameters were used. No overall differences were found between the two models based on the paired t test, suggesting successful coupling of the two models. The hybrid model offers RZWQM users access to a rigorous new plant growth model and provides CERES-Maize users with a tool to address soil and water quality issues under different cropping systems.     

节水灌溉实时决策系统

为寻求利用有限水资源取得最高作物产量或最大效益的灌溉方案,应根据不同供给水源的时空分布,作物品种与生长期和农田水分状况进行综合分析,系统分析方法的线性或非线性规划方法可望得到最优结果。     

一体化医学语言系统中的循环等级关系

 

主要讨论了一体化医学语言系统（UMLS）超级叙词表中的循环等级关系和产生原因,及其识别和消除方法。

     

ABA， H2O2与NO对木枣果实成熟生理的影响

在木枣白熟期分别用ABA、H2O2与NO供体硝普纳（SNP）喷洒果实,对其调控木枣果实成熟的生理基础进行了研究。结果显示用不同浓度的ABA,H2O2与SNP处理,枣果实中丙二醛（MDA）的含量明显升高,其中100 mg?L-1浓度时MDA含量为最高;Ca、Vc和β-胡萝卜素含量呈现先降低后升高再下降的趋势,其中75 mg?L-1浓度时Vc和β-胡萝卜素含量最高,50 mg?L-1时Ca含量最高;CAT和APX活性的变化呈现先升高后降低的趋势,75 mg?L-1时CAT和APX活性均最大;DNA含量的变化呈现先缓慢降低后升高再下降的趋势,ABA比H2O2、SNP处理对DNA含量影响更明显,100 mg?L-1时DNA含量最高。结论：ABA、H2O2与SNP对木枣果实发育成熟的影响效果较为明显,其生理效果在多方面表现基本一致,有加快木枣果实成熟衰老的作用。