Web环境下藏文信息处理技术

文章就浏览器中藏文字体显示的解决方案作了描述.它是建立在Microsoft提供的IE基础之上,利用IE 的ActiveX Control扩展特性以及Windows操作系统对True Type字体的底层基础设施,在应用层上实现了浏览器中藏文字体信息显示,并对现有技术的弊端加以阐释.     

藏医尿诊

藏医学作为一门独特的医疗体系 ,在诊断方面与众不同 尿诊就是一个既具独特又具有科学价值的诊断方法之一 所谓尿诊 ,就是医生通过观察患者的尿液来诊断疾病 尿诊的内容包括尿液的颜色、气味 ,蒸汽、气泡、尿液中的飘浮物和沉淀物等 藏医望诊中 ,尿诊最具特色     

An integrated view of the chemistry and mineralogy of martian soils

The mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies, and could reflect either a global component or the general similarity in the compositions of the rocks from which they were derived. Increased levels of bromine are consistent with mobilization of soluble salts by thin films of liquid water, but the presence of olivine in analysed soil samples indicates that the extent of aqueous alteration of soils has been limited. Nickel abundances are enhanced at the immediate surface and indicate that the upper few millimetres of soil could contain up to one per cent meteoritic material.     

Water alteration of rocks and soils on Mars at the Spirit rover site in Gusev crater

Gusev crater was selected as the landing site for the Spirit rover because of the possibility that it once held a lake. Thus one of the rover's tasks was to search for evidence of lake sediments. However, the plains at the landing site were found to be covered by a regolith composed of olivine-rich basaltic rock and windblown 'global' dust. The analyses of three rock interiors exposed by the rock abrasion tool showed that they are similar to one another, consistent with having originated from a common lava flow. Here we report the investigation of soils, rock coatings and rock interiors by the Spirit rover from sol (martian day) 1 to sol 156, from its landing site to the base of the Columbia hills. The physical and chemical characteristics of the materials analysed provide evidence for limited but unequivocal interaction between water and the volcanic rocks of the Gusev plains. This evidence includes the softness of rock interiors that contain anomalously high concentrations of sulphur, chlorine and bromine relative to terrestrial basalts and martian meteorites; sulphur, chlorine and ferric iron enrichments in multilayer coatings on the light-toned rock Mazatzal; high bromine concentration in filled vugs and veins within the plains basalts; positive correlations between magnesium, sulphur and other salt components in trench soils; and decoupling of sulphur, chlorine and bromine concentrations in trench soils compared to Gusev surface soils, indicating chemical mobility and separation.     

沼泽绿牛蛙的核型研究

本对沼泽绿牛蛙的染色体核型进行了研究。结果证明了沼泽绿牛蛙的核以式为Ｋ（２ｎ）＝２６＝１６ｍ＋１０ｓｍ有５对大型不染色体和８对小型染色体,可以分成Ａ、Ｂ、Ｃ组,雌雄性个体间没有性染色体的分化。在第７号染色体短臂上出现次缢痕。     

黄斑星天牛产卵刻槽的空间分布格局及抽样技术

黄斑星天牛是新疆伊犁部分地区杨树、柳树、榆树等树种的主要蛀干性害虫.通过判断空间分布型聚集度的5项指标,并利用Iwao M*-m回归分析法、Taylor幂法则对黄斑星天牛产卵刻槽的空间分布型和抽样技术进行了研究,研究结果表明黄斑星天牛的产卵刻槽在柳树上呈聚集分布,Iwao M*-m回归方程M*=5.24+1.03m(r=0.998 2),利用回归方程中的两个参数值α、β,计算在不同允许误差下(0.1,0.2,0.3)的抽样数公式N0.1=239 7.16/m+11.52,N0.2=599.29/m+2.88,N0.3=266.35/m+1.28,计算了黄斑星天牛产卵刻槽在不同密度下的最适抽样数,并制作了序贯抽样分析表,对在生产实践中根据人力、物力确定调查样本数、制定防治指标都有一定的借鉴意义.     

Al对HP40合金室温力学性能的影响

采用中频感应炉熔炼的方法制取样件.用光学显微镜分析在HP40合金中加入质量分数为5%～10%的Al元素时,各质量分数所对应的相组成和显微组织,研究在HP40合金中加入不同质量分数的Al对合金室温力学性能的影响以及合金力学性能与显微组织的关系.结果发现,加Al元素的HP40合金抗拉强度和屈服强度均随Al质量分数的增加而先升高后降低;合金的硬度随Al质量分数的增加而显著提高;合金的延伸率在Al质量分数为5%时,与未加Al的HP40合金一样未降低,而后随着Al质量分数的增加而降低.随着Al质量分数的增加,由于金属间化合物(Ni,Fe)Al的析出,合金的组织也发生了明显的变化,组织由网状结构变为枝状结构和羽毛状结构.     

超声波有机溶剂法提取樱桃李籽油的工艺研究

采用超声波辅助法提取樱桃李籽油.通过单因素试验和正交试验考察了提取温度、提取时间、料液比、提取液配比对樱桃李籽油得率的影响.结果表明,各因素对樱桃李籽油得率的影响大小依次为：液料比＞提取时间＞提取温度＞提取液配比;樱桃李籽油的较佳提取工艺条件为提取液配比60%、料液比12mL·g-1、提取时间15min、提取温度50℃,在该条件下樱桃李籽油得率45.52%,所得油脂澄清、透明,呈黄色.     

水柏枝属植物的化学成分及生物活性研究进展

水柏枝属(Myricaria)植物全世界有13种,是重要的生态保护、药用和饲用植物.本文对该属植物的化学成分及药理进行综述,并对该属植物的研究提出展望.