聚氨酯-丙烯酸酯-苯乙烯复合乳液的合成与性能

以甲苯二异氰酸酯(TDI)、聚醚二元醇(N210)、丙烯酸羟丙酯(HPA)、甲基丙烯酸甲酯(MMA)、苯乙烯(ST)为主要原料,采用原位乳液聚合法合成了聚氨酯-丙烯酸酯-苯乙烯(WPUAS)复合乳液;通过Fourier变换红外光谱对产物进行了表征;研究了NCO与OH总摩尔比、WPU与MMA与ST质量比、HPA用量对乳液粒径、储存稳定性及固化膜硬度、吸水率等性能的影响.     

葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的疗效

为探讨葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的临床疗效,对30例子宫肌瘤患者行子宫动脉栓塞术治疗,随访观察术后症状缓解、子宫和肌瘤缩小的程度。结果显示30例患者行双侧子宫动脉栓塞,在有症状的27例中,24例(88.9%)症状有不同程度的缓解,其中月经症状改善最为显著。子宫及肌瘤体积行UAE后1个月、3个月、6个月彩超复查子宫及肌瘤的体积平均缩小率分别为17.42%、27.95%、42.86%和24.2%、38.0%、56.15%。这表明,采用葡聚糖微球栓塞子宫动脉治疗子宫肌瘤的近期疗效明显。     

Aspects of Romanian Early-Middle Jurassic palaeobotany and palynology. Part VII. Successions and floras

The Jurassic floras of Romania occur in the Carpathian Mountains and in Dobrogea (Eastern Romania). In the South Carpathians, diverse and well preserved floras have been recorded since the middle of the 19th Century in the Resita, Sirinia, Presacina, CernaJiu, Holbav and Cristian Basins. The ages of these floras range between Hettangian and Sinemurian, with representatives belonging to Bryophytes, Pteridophytes and Gymnosperms. Excellent preservation and diversity were recorded in Anina, in the central area of the Resita Basin, a possible fossile-Lagerst?tte locality. The 3D collecting opportunities due to underground coal mining permitted detailed phytostratigraphical studies. These studies showed a floral change at the Hettangian-Sinemurian boundary, related to climate change. The Jurassic coal basins of the South Carpathians show both intramontainous and paralic features. The Resita Basin is a typical intramountainous depression basin, while the other basins are influenced by the marine realm. From a paleogeographical point of view, the Romanian Early and Middle Jurassic floras occurred on the northern frame of the Tethys realm, floristic features indicating the Eurosinian Province. One of the closest floras in terms of floristic similarities is the Iranian Early Jurassic flora. In the Apuseni Mountains, the HettangianSinemurian flora is less well-preserved and diverse than those of the South Carpathians. The Middle Jurassic flora of Romania is confined to Dobrogea (Eastern Romania), where a bennettite-dominated assemblage with low diversity and preservation was recorded.     

137Cs tracing of lacustrine sediments in the Dalian Lake, Qinghai Province, China

Based upon the analysis of Cs and grain-size parameters, the total amounts of ¹³⁷Cs deposition by wind and water in the Dalian Lake of Gonghe Basin, Qinghai Province are defined. The vertical profile of ¹³⁷Cs in the lacustrine sediments exhibits three ¹³⁷Cs activity maxima and one minimum. The major maximum corresponds to the global ¹³⁷Cs fallout in 1963; the two secondary maxima correspond to the leakage of the Chernobyl reactor in 1986 and complete desiccation of the lake in 1994, respectively. The minimum corresponds to aeolian deposition caused by extensive reclamation in the late 1980s and early 1990s. The 137Cs data set was used to evaluate average sedimentation rate of the Dalian Lake since 1963. The deposition was stable in 1963-1986 and 1994-1998, and it was rapid during 1986-1994. This preliminary study reveals that l37Cs has the same potential to trace environmental changes introduce by human interference in arid/semiarid regions as in humid regions.     

科研成果评价工作的定量分析

为使科研成果评价工作更加科学化、公平合理化，本将模糊数学的综合方法应用到科研成果的质量评定上，使评定工作由定性分析到定量分析。     

RUP和UML在软件体系结构建模中的应用研究

把UML与RUP作为软件体系结构建模的支持,以某公司销售管理系统为例,根据UML与RUP的通用建模过程逐步构建了销售管理系统的需求模型、用例动态模型、对象结构模型和实现模型。     

关于R.G.Douglas的一个问题

本注记给出一个定义在某个Banach空间上的1-1,非紧算子,它的值域不含无限维闭线性子空间。这与Douglas所提的问题有关。     

关于R.G.Douglas的一个问题

本注记给出一个定义在某个Banach空间上的1-1,非紧算子,它的值域不含无限维闭线性子空间。这与Douglas所提的问题有关。     

先秦诸子对环境美学的影响

先秦诸子提出的人格美学范畴，对环境美学也产生了深远的影响，奠定了中国古典环境艺术（建筑、园林）的基本趣味。如非礼弗履、阴阳和谐、有无相生、道法自然等等。从这些美学趣味中，可以看出中国环境艺术的一个根本特点：环境与人相通。从而为我们理解中国古典园林、建筑找到了一个重要的视角：把环境美与人格美联系起来理解。