Coat color polymorphism in populations of the northern mole vole in the Ural Region

Collections made in the course of long-term field studies on ecology of the northern mole vole Ellobius talpinus Pall. in the Ural Region and neighboring areas (more than 2000 individuals from 24 points of the species range) were used to analyze geographic variation in its coat color (color morphs). On the basis of long-term observations (1985–1999) on marked animals from a polymorphic population (Kurtamyshskii raion, Kurgan oblast), the life spans of males and females and the dependence of life span on population density and structure were estimated in animals of different color morphs. Each color morph of E. talpinus was shown to have specific features of the seasonal dynamics of age structure and migrations.     

Plant Phenology in Western Canada: Trends and Links to the View From Space

One feature of climate change is the trends to earlier spring onset in many north temperate areas of the world. The timing of spring flowering and leafing of perennial plants is largely controlled by temperature accumulation; both temperature and phenological records illustrate changes in recent decades. Phenology studies date back over a century, with extensive databases existing for western Canada. Earlier spring flowering has been noted for many woody plants, with larger trends seen for species that develop at spring's start. Implications for ecosystems of trends to earlier spring arrival include changes in plant species composition, changes in timing and distribution of pests and disease, and potentially disrupted ecological interactions. While Alberta has extensive phenology databases (for species, years, and geographic coverage) for recent decades, these data cannot provide continuous ground coverage. There is great potential for phenological data to provide ground validation for satellite imagery interpretation, especially as new remote sensors are becoming available. Phenological networks are experiencing a resurgence of interest in Canada (www.plantwatch.ca) and globally, and linking these ground-based observations with the view from space will greatly enhance our capacity to track the biotic response to climate changes.     

Linking Land Cover and Water Quality in New York City’S Water Supply Watersheds

The Catskill/Delaware reservoirs supply 90% of New York City’s drinking water. The City has implemented a series of watershed protection measures, including land acquisition, aimed at preserving water quality in the Catskill/Delaware watersheds. The objective of this study was to examine how relationships between landscape and surface water measurements change between years. Thirty-two drainage areas delineated from surface water sample points (total nitrogen, total phosphorus, and fecal coliform bacteria concentrations) were used in step-wise regression analyses to test landscape and surface-water quality relationships. Two measurements of land use, percent agriculture and percent urban development, were positively related to water quality and consistently present in all regression models. Together these two land uses explained 25 to 75% of the regression model variation. However, the contribution of agriculture to water quality condition showed a decreasing trend with time as overall agricultural land cover decreased. Results from this study demonstrate that relationships between land cover and surface water concentrations of total nitrogen, total phosphorus, and fecal coliform bacteria counts over a large area can be evaluated using a relatively simple geographic information system method. Land managers may find this method useful for targeting resources in relation to a particular water quality concern, focusing best management efforts, and maximizing benefits to water quality with minimal costs.The United States Environmental Protection Agency through its Office of Research and Development funded and managed the research described here. It has been subjected to Agency’s administrative review and approved for publication as an EPA document.     

针对无美术基础学生的设计色彩教学方式探讨

本文主要论述了在设计色彩教学中，针对基础薄弱或毫无美术基础的平面设计类专业学生，而设计的一套由简到繁、由浅入深、由分到合、由易到难、循序渐进的教学方式，该套方式运用丰富多样的、富有创造性的教学方法实施教学，可以帮助学生系统地完成从理论学习到实践练习、再转入实际创作的一个科学的学习过程，而且能激发学生的设计热情、开拓学生的设计思路。     

污水中硫化物分析方法的改进

根据<水和废水监测分析方法>(第三版)中规定的污水中硫化物分析的预处理方法,水样中加1 1的磷酸10ml酸化水样,使水样中的硫化物转变成硫化氢气体,利用高纯氮气,控制好载气流速将硫化氢气体吹出,用乙酸锌-乙酸钠溶液吸收,吹气的时间为45min.同时采用65～80℃的水浴温度加热烧瓶,提高污水中硫化氢的回收率.我们通过平时的对比实验发现,该测定方法时间长,而且存在较大的误差,回收率偏低,影响了实验的速度和测定结果的准确性.为此,针对以上情况,我们对该实验方法进行了改进.实验证明该方法具有准确度高,精密度好,测定周期短等优点,完全能满足污水中硫化物监测的需要.     

Normal development in two six-year-old boys born after prenatal diagnosis of trisomy 20 mosaicism

Prenatal diagnosis of trisomy 20 mosaicism was made in two pregnancies by chromosome analysis of cultured amniotic fluid cells. In both cases, the pregnancy continued to term and a healthy male infant was delivered. Regular assessments up to the age of 6-5 years revealed normal physical and intellectual development in both children.     

色基生产废水的三级处理工艺试验

在染料中间体红色基Ｂ，紫酱色基ＧＰ的生产过程中，全产生降解处理的废水，采用中和隔油－生物接触氧化－电解脱色工艺处理可达标准排放。试验结果表明，硝化废酸液和水解母液的混合废水经过中和隔油处理后，ＣＯＤｃｒ的去除率可达到５６％以上，而ＢＯＤ５／ＣＤＯｃｒ的比值可在从０．２２提高到０．５以上；再经生物接触氧化处理后，ＣＯＤｃｒ的去除率在８８％以上，ＢＯＤ５的去除率在９２％以上；最后，电解处理能使ＣＯＤｃ     

彩色合成法在新疆地表植被覆盖变化中的应用--以多时相NOAA-AVHRR影像为例

以NOAA—AVHRR遥感数据为基础，使用彩色合成法对新疆地表植被变化进行分析。结果证明，利用不同时相的NDVI影像进行彩色合成可以直观地反映地表植被的变化趋势，通过遥感软件对彩色图像处理，还可以对地表植被变化进行定量分析。     

Methods of Assessing and Achieving Normality Applied to Environmental Data

2 and particle concentrations. Results show that the analyzed transformations work well and are very useful to achieve normal distributions.     

采用消声障板控制通风管路送、回风口声辐射的研究

根据扁矩形消声通道二维消声理论替代一维理论导出的消声系数Φ（α），研究了障板消声结构的Φ（α）计算机程序和消声量与障板几何尺寸的关系