装配式简支空心梁板桥病害分析

鉴于装配式简支空心梁板桥病害发生的原因各有不同,根据不同桥梁的特性对于桥梁的病害进行汇总、分析,从而提出采用适当的加固技术和拓宽措施,以便进一步恢复和提高旧桥的承载力,延长桥梁的使用寿命.     

风陵渡黄河公路大桥D400伸缩缝病因分析及改造方案

由于桥梁伸缩缝设置在梁端构造薄弱部位,直接承受车辆反复荷载的作用,又多暴露于大自然中,受到各种自然因素的影响,因此,伸缩缝易损坏、难修补。为确保桥梁伸缩缝发挥其正常功能,保证桥梁结构的安全性和行车舒适性,必须经常维修保养。结合工程实例,介绍风陵渡黄河大桥伸缩缝病害成因及改造方案。     

沥青混凝土路面裂缝病害分析及治理对策研究

早期病害会造成沥青混凝土路面不同程度的损坏,更甚的会影响公路的使用性能和安全性能。鉴于此,对沥青混凝土路面早期裂缝病害的形成机理、预防及处治措施等进行研究,以期为相关工程技术人员提供参考和借鉴。     

Mental flexibility impairment in drivers with early Alzheimer's disease: A simulator-based study

After memory impairment, one of the most common troubles of early Alzheimer's disease (AD) is the impairment of executive functioning. However, it can have major consequences on daily life, notably on the driving activity. The present study focused on one important executive function involved in driving: mental flexibility; and considered how this impairment can affect driving. Ten patients with early AD were matched with 29 healthy older drivers. All participants were given an evaluation of mental flexibility through neuropsychological tests and an experimental test developed on a static driving simulator. The experiment was divided in two conditions; one without mental flexibility and another condition with a mental flexibility demand. AD patients showed impairments in the neuropsychological tests evaluating mental flexibility. These deficits are linked to the deficits they showed in the driving simulator flexibility tests. This study contributes to the understanding of mental flexibility mechanisms and on their role in driving activity. It also confirms that the driving simulator is a suitable tool to explore cognitive disorders and driving ability.     

陕西黄陵县克山病的病情现状

对历史上克山病重病区陕西黄陵县部分重病村做了普查，共查１１２２人，结果表明∶①１１２２人中检出潜在、慢型克山病４０例，检出率为３．７５％，总的发病趋势稳中有降；②潜在型克山病的新发生率为５３．５／万，且以３～１５岁儿童为主；③病区重点人群发硒含量达到非病区水平，而发中微量元素锰、铁含量较高；④慢型克山病死亡率较高（３年死亡率为３３．３％）。死亡多为３０～４０岁的中、青年。     

BIOCHEMICAL STUDIES ON GLUCOAMINOGLYCANS CONTENT IN AFFECTED CARTILAGE HYALURONIC ACID LEVELS IN SERUM AND SYNOVIAL FLUID OF IDIOPATHIC FEMORAL HEAD NECROSIS

Ｍｏｓｔｏｆｒｅｓｅａｒｃｈｅｓｏｎｔｈｅｐａｔｈｏｇｅｎｅ－ｓｉｓｏｆｉｄｉｏｐａｔｈｉｃｏｓｔｅｏｎｅｃｒｏｓｉｓｌａｉｄｐａｒｔｉｃｕｌａｒｅｍｐｈａｓｉｓｏｎｔｈｅｏｓｔｅｏｐａｔｈｏｌｏｇｙ，ｈｅｍｏｒｒｈｅｏｌｏｇｙ，ｂｉｏｍｅｃｈａｎｉｃａｌａｎｄｃｈｏｎｄｒｏｐａｔｈｏｌｏｇｙ〔１，２〕．Ｔｈｅｒｅｈａｓｂｅｅｎｎｏｓｔｕｄｙｏｎｔｈｅｃｈｏｎｄｒａｌｆｕｎｃｔｉｏｎｂｉｏｃｈｅｍｉｃａｌｃｈａｎｇｅａｎｄｉｔ′ｓｒｏｌｅｓｉｎｓｔｅｒｏｉｄａｖａｓｃｕｌａｒｎｅｃｒｏｓｉｓｏｆ…     

膨胀土铁路路堤工程病害与防治措施

膨胀土分布广泛,若防治措施不当,极易造成路基工程病害,对路基危害极大。结合工程实例,从膨胀土路堤可能出现的各类病害(基床翻浆冒泥、边坡坍塌、路桥路涵过渡段下沉)入手,根据膨胀土的工程特性及病害产生的原因,介绍采取的防治措施及处理方法。     

复方羟基磷灰石充填根管临床疗效观察

目的　观察复方羟基磷灰石充填根管治疗牙髓病、根尖周病的临床疗效。方法　用复方羟基磷灰石充填根管治疗牙髓—尖周病、观察 1～ 3年 ,根据 X线片和临床症状 ,评价其术后反应和治疗效果。结果　实验组术后反应比对照组轻 (P <0 .0 5) ,临床疗效略高于对照组。结论　复方羟基磷灰石作为根管充填材料治疗牙髓病、尖周病术后反应轻 ,临床疗效好     

港口码头的老化机理与病害评估

结合江苏沿江港口码头设计、改造工作经验,重点分析了港口码头老化病害的基本特征、形成机理和演变规律,对港口码头老化病害的评估、控制及加固改造工作有一定的参考作用。     

水泥混凝土路面常见病害与施工工艺的关系

通过对水泥混凝土路面施工工艺与砼路面常见病害的关系分析,提出改善水泥砼路面施工工艺的方法,可为同行提供一定的参考。