Hydrogeochemical Characteristics of Shennongjia Forest District at Songbai Town, Hubei

1IntroductionSongbaiTown—thecapitaloftheShengnongjiaforestdistrictisthecenteroflocalpolitics,eco nomicsandculture ,anditisalsoanimportanttourismbase.Butinrecentyears,thelocalinhabi tantsinthisareahavesufferedfromcalculusdiseaseoccasionallyandthediseaseseemstobeofmoreandmorefrequentoccurrence .Thisnotonlycausesmasspanicandinfluencesnormalworkandstudyofthelocalpeople ,butalsobringsaboutnegativeeffectsontouristindustryofthisareaandrestrictsthedevelopmentoflocaleconomy .Inordertounderstandthesta…     

海洋鱼类疾病诊断系统中的多参数的证据不确定性推理机制

在分析、归纳、总结不确定性推理相关问题的基础上,提出基于充分性参数、必要性参数和可信度因子(规则强度)等多参数的证据不确定性推理方法。该方法能够表示具有复杂不确定性加权关系的诊断规则,并且能够根据证据规则的约束条件通过数值计算获取规则的不确定性相关参数;通过在开发的海洋鱼类疾病诊断专家系统中的应用,很好地体现了疾病诊断中存在的不确定性,有效地减少了主观因素对诊断结论准确性的影响。     

定量胸部CT检测Pi10在COPD患者治疗反应中的预测价值

目的：通过定量CT扫描分析明确慢性阻塞性肺疾病（COPD）患者随访1年内治疗反应的预测因素。方法：研究对象为113例COPD患者,患者每天接受两次吸入长效β-激动剂和皮质类固醇联合治疗,持续3个月,随后接受药物治疗,通过基线CT扫描获得肺气肿指数（EI）、空气滞留指数（ATI）和假设气道周径为10 mm时的管壁面积平方根（Pi10）。临床上有意义治疗反应定义为在1年随访中,1 s用力呼气量（FEV1）增加≥0.225 L。采用多变量逻辑回归分析来FEV1升高的预测因素。结果：23例患者（20.4%）出现治疗反应,反应患者的平均FEV1增加为（0.35±0.11） L。在单变量分析中,治疗反应患者和无反应患者之间ATI、肺气肿区ATI和Pi10参数之间有显著差异（所有P<0.05）;多变量分析显示,Pi10是预测FEV1升高的唯一独立变量（OR：1.789,95% CI：1.221~2.618,P=0.003）。结论：基线定量CT测量Pi10可以预测COPD患者1年随访期的治疗反应。     

徐州龟山汉墓病害及其产生原因分析

通过介绍徐州龟山汉墓的建筑特点及病害特征,分析了汉墓病害的产生原因,为治理病害的施工图设计及具体文物加固保护方案提供了极为有益的借鉴资料.     

近10年我国医疗气象学研究现状及其展望

综述了近10年来国内有关医疗气象的研究,特别是介绍了前人在常见病（循环系统、消化系统和呼吸系统疾病）、传染病以及各种生物性病原（疾病媒介物、寄生虫、真菌、细菌等）与气象条件关系研究,未来气候变化对人体健康的可能影响以及气象部门在医疗气象方面的预报和服务,并对今后医疗气象的研究方向进行了展望。指出应进一步加强医疗与气象两个学科的全国性协作研究。研究各种气象因素对人体生理、病理及精神状态的影响和气候变化对人类健康的影响,加强气象灾害与疾病的关系及灾后防御措施的研究。     

Muscle myogens in the New Zealand Galaxiidae

The muscle myogen proteins of 10 species of the family Galaxiidae exhibited a high degree of species specificity when separated by starch gel electrophoresis. Non‐diadromous, non‐lacustrine species had some variation in the proteins present, while diadromous and lacustrine species, except for Galaxias maculatus, had remarkably uniform muscle myogen electrophero‐grams. The variation can be explained by polymorphism and mosaic evolution of isolated freshwater populations. It was found that previously erected specific and generic categories, except for G. vulgaris, are clearly defined by differences in muscle protein. The standardised electropherogram types obtained were subjected to cluster analysis using both squared Euclidean distance and the complement of Jacard's coefficient with average sorting strategy. A principal component analysis was also carried out. The first two components of the principal component analysis widely spaced the three genera included in this study (Salmo, Galaxias, and Neochanna), with N. burrowsius occupying an intermediate position between Galaxias and Neochanna. Previous workers have considered this species to be a connecting link between the two genera. The dendrogram produced by using squared Euclidean distance (which included all available information) first clustered the types into Salmoniidae and Galaxiidae. The latter were split into the genus Neochanna and the genus Galaxias which was then subdivided into stout‐bodied species (G. argenleus and G. jasciatus) and slender‐bodied species. G. brevipinnis and G. vulgaris types were further separated from the three alpine Galaxias species and G. maculatus. The substantial agreement of these results with previous taxonomic efforts indicates that electrophoretic data can be a valid taxonomic tool.     

缺血性脑血管病的综合影像诊断分析

目的: 探讨CT平扫、CT血流灌注成像(CTP)、磁共振弥散加权成像(DWI)及螺旋CT血管造影(CTA)对缺血性脑血管病的比较影像学价值,找出缺血性脑血管病的合理影像检查路径。方法: 30例缺血性脑血管病患者经CT、CTA、CTP、DWI检查。结果: 30例患者中,12例CT平扫显示责任病灶,27例CTA显示责任血管。DWI与CTP对缺血性脑血管病的敏感性分别为73.3%,83.3%,阳性预测值分别为95.7%,92.6%,两者无显著性差异。结论: CT平扫是常规筛选检查,CTP和DWI是发现脑组织缺血改变的敏感方法,CTA适用于确定责任血管。CTP和DWI、CTA检查可根据病人经济条件及临床表现灵活选择。