江淮膨胀土地区公路路基病害及处理方法

本文在介绍安徽省江淮地区膨胀土的性质特点的基础上,分析该地区公路工程中可能出现的病害,并结合工程实例探讨石灰土包边处理施工的主要过程.     

慢性肺原性心脏病计算机诊断专家系统

研究慢性肺原性心脏病计算机诊断，采用PROLOG语言有BASIC语言，将疾病的资料编写成适合计算机语言和程序编写的格式，在病人资料录入的过程中完成数据库的建立，将疾病的鉴别，诊断资料输入数据库，并编写成不同的代码作为知识库，通过推理机完成推理诊断，通过临床381例患者的验证，其诊断符合率为100％，本专家系统信息量大，科学性强，层次清楚，操作简便，适合临床推广应用。     

链格孢侵染对枸杞鲜果挥发性物质释放的影响

目的 探究链格孢(Alternaria alternata)侵染对枸杞果实挥发性化合物释放的影响。方法 以宁杞1号枸杞果实为研究对象,通过损伤接种链格孢菌处理,分析测定接种后果实发病率和病斑面积,采用顶空-气相色谱-离子迁移谱法探究接种对果实挥发性成分释放的影响。结果 接种果实发病率和病斑面积均随贮藏时间延长显著增加,5-甲基-2-呋喃甲醇可作为区别损伤和非损伤处理的候选物质,损伤接种链格孢菌处理显著促进了第5 d果实中2,3-二甲基吡嗪、2-正戊基呋喃和二异丁基酮等物质和第1 d后果实中苄醇、2-丁酮、异戊酸乙酯、3-甲硫基丙醛和庚醛等物质的释放,这些物质可能与枸杞黑霉病的发生和严重度有关,可作为鉴定链格孢侵染枸杞果实的候选靶标物质,通过指纹图谱和主成分分析将不同处理枸杞样品的挥发性成分进行有效区分。结论 链格孢侵染可促进枸杞果实香气成分释放,为枸杞黑霉病快速诊断与评估奠定基础。     

Visibility, air quality and daily mortality in Shanghai, China

This study was designed to assess the association between visibility and air quality, and to determine whether the variations in daily mortality were associated with fluctuations in visibility levels in Shanghai, China. Mortality data were extracted from the death certificates, provided by Shanghai Municipal Center of Disease Control and Prevention, and visibility data were obtained from Shanghai Municipal Bureau of Meteorology. Air quality data (PM₁₀, PM_2.5, PM_10-2.5, SO₂, NO₂ and O₃) were obtained from Shanghai Environmental Monitoring Center. Generalized additive model (GAM) with penalized splines was used to analyze the mortality, visibility, air pollution, and covariate data. Among various pollutants, PM_2.5 showed strongest correlation with visibility. Visibility, together with humidity, was found appropriate in predicting PM_2.5 (R-squared: 0.64) and PM₁₀ (R-squared: 0.62). Decreased visibility was significantly associated with elevated death rates from all causes and from cardiovascular disease in Shanghai; one inter-quartile range (8 km) decrease in visibility corresponded to 2.17% (95%CI: 0.46%, 3.85%), 3.36% (95%CI: 0.96%, 5.70%), and 3.02% (95%CI: − 1.32%, 7.17%) increase of total, cardiovascular and respiratory mortality, respectively. The effect estimates using predicted PM_2.5 and PM₁₀ concentrations were similar to those assessed using actual concentrations. This is the first study in Mainland China assessing the association between visibility and adverse health outcomes. Our findings suggest the possibility of using visibility as a surrogate of air quality in health research in developing countries where air pollution data might be scarce and not routinely monitored.     

沥青路面的病害成因分析及防治

根据我国公路95％以上的路面均为沥青混凝土或改性沥青混凝土路面课题的研究成果，论述了沥青路面早期病害的原因，指出了我国沥青路面规范的不足，分析了沥青路面病害因素，提出预防措施。     

体外心脏震波产生和触发系统的设计

本文主要研究体外震波治疗冠心病系统的震波源换能器及触发电路系统的结构与设计。震波源换能器主要由圆柱型电感线圈、金属膜及反射杯组成,实现冲击波的产生与聚焦。触发电路系统主要包括高压升压模块、升压控制模块、储能电容阵列、高压开关模块、充电计数模块和混合信号处理模块。经实验测量,触发系统可输出频率、幅值稳定的高压脉冲,安全可靠;高压脉冲接入震波换能器实现电能经电磁方式转换为机械能,发射低能量、窄脉宽、高压强的冲击波。     

沥青砼路面常见病害的防治

针对于目前沥砼路面常常出现开裂、泛油、松散、坑槽等常见病害,从原材料,施工过程、施工工艺、材料组成设计等不同方面提出了改进意见和措施。     

Further Exploration of Controlled and Automatic Memory Processes in Early Alzheimer's Disease.

The authors' aim in this study was to explore automatic and controlled processes in Alzheimer's disease (AD) by using a variant of the word-stem completion task that applies the process-dissociation procedure. Several methodological precautions were taken in order to limit problems observed in previous studies (e.g., poor task sensitivity, ceiling and/or floor effects, no control over comprehension of instructions). Our results (a) confirmed the marked deterioration in controlled processes and (b) showed that when psychometric constraints were limited, automatic memory processes were preserved in AD. These data are in line with those from more global studies in suggesting that AD is characterized by an early deterioration in controlled processes and an initial preservation of automatic processes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

设施栽培中逆境对园艺作物生长发育及其病害的影响祆

根据近年来国内外的相关研究进展,针对设施园艺生产中普遍出现的作物生长不良和病害严重等问题,在分析设施内各环境因子改变的基础上,综述了光照不足、温湿度不适、土壤次生盐渍化、酸化、养分失衡以及土壤生物学环境恶化等设施逆境对作物生长发育及其病害的影响。     

草坪常见病害及其综合防治技术

草坪草的生长过程中,常会受到各种病原菌的侵染和危害,从而严重影响草坪的整体观赏价值和使用价值.通过阐述草坪上发生的常见病害种类及其发生特点,并针对病害发生的特点提出防治意见,以期对城市绿化的养护和草坪病害的研究与防治具有一定的参考价值.