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New type of water chemistry for utility drum boiler and its principle and characteristic Two kinds of water chemistry's main principle and characteristic are detailedly analyzed. Against the problem of high eroding speed, high Fe content in feed water and boiler water, high scaling speed, short chemical cleaning interval, needing poisonous chemical deoxidant, etc for drum boiler's deoxidization water chemistry and difficulty of using oxidation water chemistry, a new type of water chemistry is put forward on the basis of analyzing the characteristic of whole power station's water steam cycle system, principle of two kinds of water chemistry and their practical effect in every cycle stage. Considering two water chemistry's merit, a new water chemistry called Limited Oxidation Water Chemistry is put forward, which is a local slight oxidization no-deoxidant water chemistry. And the proposed method's principle, control parameter, applying condition, start-lay up and emergency measures are initially calculated and analyzed.

三、新型汽炉水化学工况的提出及其原理和特点详细分析了国内外现行两大类水化学工况处理的核心原理和特点,针对现行汽炉还原性水化学工况处理所存在的系统腐蚀速度相对较大、给水和炉水铁浓度高、锅炉结垢速度快、机组酸洗间隔短、无法避免有毒化学除氧剂的使用以及氧化性水化学工况在汽炉机组上应用的困难等问题,在详细分析电站整个水蒸汽循环系统的特点、两类水工况处理的原理和对循环中各段处理的实际效果等的基础上,综合两者的优点,提出了一种新型的局部轻微氧化性无除氧剂汽炉水化学工况-"汽炉有限氧化性水化学工况"处理原理,并初步计算、分析和确定了该种新型水化学工况的主要工艺控制参数、应用条件、启停与紧急情况处理等。

The mineral chemistry, trace elements and Sr-Nd isotopic geochemistry of different types of deep-seated inclusions indicate that Group Ⅰinclusions in western Shaudong could be the relicts of high degree of partial melting of the mantle-derived peridotites and then subjected to mantle metasomatism; the dunite and harzburgite in Group Ⅱ inclusions could be resulted from the metasomatism of silica-rich melts in the upper mantle; the olivine-pyroxenite and pyroxenite in Group Ⅱ and Group Ⅲ inclusions could be magmatic cumulates derived from magma underplating in the upper mantle.

不同结构类型深源岩石体的矿物化学、元素和同位素地球化学研究表明,鲁西具有变质变形结构特征的橄榄岩类岩石体为岩石圈地幔橄榄岩部分熔融后的残留体,其后又遭受了地幔交代作用的改造;具有变质变形结构,并叠加有矿物反应结构的纯橄岩和方辉橄榄岩类体为古老岩石圈地幔被富硅质熔体改造的结果;具有残留岩浆结晶结构的橄榄岩、橄辉岩类岩石体以及具有变晶结构或堆晶结构的辉石岩类体为地幔更早期岩浆作用的在上地幔的堆积体。

This paper reviewed the research progresses about the cysts, especially the resting cysts of protozoans, mainly focused on the characteristics of morphologies, structures, constituents, and living activities, as well as molecular mechanism and significance of encystment for the protozoans, also, cell behavior during encystment and excystment was involved based on the references reported.

以国内外文献报道为依据,综述了原生动物囊,特别是休眠囊的研究进展情况,主要集中在囊的形态、结构、组成、生命活动特征、囊形成的分子作用机理和意义,以及囊形成与解脱过程中细胞行为上的研究等方面。

The surface appearance and hygroscopicity of ADN after coating were analyzed by SEM and weighing method. Results show that a kind of floccule of PU is formed on the surface of ADN, which makes the hygroscopicity of ADN after coating less than that before coating evidently. When coated ADN is exposed in the atmosphere for 30 days with the RH less than 60%, the hygroscopicity of coated ADN is only 0.136% and does not increase with the increasing of exposure time.

用扫描电镜和称重法分析了覆后ADN的表面形貌和吸湿性,结果表明,聚氨酯黏合剂在ADN表面形成絮状的覆膜,使覆后ADN的吸湿率明显小于覆前ADN,在相对湿度60%以下,覆后ADN在空气中暴露30天时吸湿率仅0.136%,吸湿率不随时间增加。

The hydraulic loading system is developed and used to study the frost heaving characteristics of the subgrade soils under dynamic loading in closed system and open system . On the base of these work, the conclusions are as follows:1. Because of the the fine-grained fill, the frost deformations of Beijing-Baotou railway subgrade and Baotou-Lanzhou railway subgrade are holistically irregular, and great discrepancies exist among the frost heavings of subgrade at different sections.

本文根据冻害较严重的京铁路、兰铁路的气候、地质条件的调查和路基冻胀变形监测,结合路基土的性质对京铁路、兰铁路的冻害给出了评价;为了模拟振动荷载作用下土的冻胀,研制了液压动力加载系统;在室内采用实验方法对列车动荷载作用下兰线路基粉质土在开敞、封闭系统下的冻胀特性进行模拟。

This System enables one to four persons to work simultaneously and input and output conveniently many kinds of data and images Corresponding to the four hardware subsystems, its software is composed of four software packages: magnetic tape recorder data collecting package, image displaying package thematic mapping package and remote sensing image applied processing package.

它的硬件部分以四台微机为主,采用分布式联接,组成四个子系统,可供1—4人同时操作,能方便地输入输出多种数据和图像。该系统的软件部分,由对应硬件子系统的四个软件组成,即磁带机数据采集软件,图像显示软件,专题制图软件及遥感应用处理软件

Methods:the preparation procedure of β cyclodextrin inclusion compound of pennyroyal was studied by orthogonal test with 3 factors: pennyroyal, temperature and time.the inclusion compound was proved by thin layer chromatography and microscope.results:the optimum preparation conditions for inclusion compound were established as :pennyroyal 2.5 ml ,inclusion temperature was at 50℃ and for 3.5hr.

用正交实验法研究配比、温度、时间三个因素对薄荷油β环糊精合物的饱和水溶液法的制备工艺的影响,考察合物的收率,并用tlc、显微影像验证合物的形成。结果:最佳的工艺条件薄荷油2.5 ml,合温度50℃,合时间3.5 h。

The iron nanoparticles in inner core have good magnetism and targeting heating effect. The temperature can go up to 52 ℃ in the case that 0.1 g carrier (carbon-coated iron nanoparticles) is injected in a local point of pig's liver,while the temperature can go up to 42℃ in the case that pig's liver uniformly containing carrier of 0.4 wt.% and 45℃ in the case that pig's liver uniformly containing carrier of 0.6 wt.%. Carbon-coated iron nanoparticles also has good antioxidation and stability by an X-rays diffraction structural analysis.

铁纳米粒子磁场强,靶向效果好,有较佳的磁靶向发热效应,在动物病灶局部放置0.1 g碳铁纳米粒子将能使发热温度平均升到52℃;而将碳铁纳米粒子均匀与猪肝混合也有明显的产热效果:含量0.4%碳铁纳米粒子的一组猪肝能将温度升到42℃,而含量0.6%碳铁纳米粒子的一组猪肝能将温度升到48℃。X射线衍射表明借助于碳的裹,碳铁纳米粒子有好的抗氧化性和稳定性。

Products of raw materials: blue gourmet espresso 2 bags, pulling rice crisp Italian coffee 2 bags, cappuccino tandoor coffee 2 bags, caramel macchiato 2 bags, stay cool tea, coffee and lowering.

配套产品的原料:极品蓝山浓缩咖啡2、提拉米酥意大利咖啡2、卡布奇诺炭烧咖啡2、焦糖玛奇朵咖啡2、熬夜清火凉茶咖啡2

GroupⅠ, the peridotite inclusions with typical pyrolite textures (metamorphic and deformation textures);(2) GroupⅡ, the peridotite and olivine-pyroxenite inclusions with metamorphic and deformation textures and overlaid mineral reaction textures or relic magmatic crystalline textures or/and cumulate textures; and (3) GroupⅢ, the pyroxenite inclusions with crystalloblastic texture and cumulate textures.

深源岩石体的岩相学表明,鲁西深源岩石体具有三种结构类型:①具有典型地幔岩结构的橄榄岩类岩石体;②具有变质变形结构,并叠加有矿物反应结构以及残留有岩浆结晶结构的橄榄岩、橄辉岩类岩石体;③具有变晶结构或堆晶结构的辉石岩类体。

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