中计
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Owing to the anisotropic and the biharmonic nature of microwave radar backscatter on spaceborne scatterometer, and to the scatter model function nolinear and the existence of various noise sources in the measurements in addition to the model function, the
由于卫星散射计探视雷达回波的各向异性的双调和性质,同时由于散射物理模型函数的非线性及信号中存在噪声,使得常规点方式风场反演中风向有多至4个解的多解存在。
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Owing to the anisotropic and the biharmonic nature of microwave radar backscatter on spaceborne scatterometer, moreover, scatter model function nonlinear and the existence of various noise sources in the measurements in addition to the model function, the retrieval wind results consist of as many as four wind directions.
摘 要 由于卫星散射计探视雷达回波的各向异性的双调和性质,同时由于散射物理模型函数的非线性及信号中存在噪声,使得常规点方式风场反演中风向有多至4个解的多解存在。
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Particles which are counted in condensation nucleus counters are very often not activated in natural cloud or fog condensation.
在凝结核计数器中被计下的粒子,在天然云或雾的凝结中往往很不活化。
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But, because of the complexity of the dye molecule, there has been short of detailed comprehension in its photocatalytic degradation process. The key problem is difficult to detect the intermediates clearly. In this paper, the photocatalytic degradation of azo dye Congo red in water solution was investigated on UV irradiating TiO2 in the homemade reactor. The optimization conditions were determined and then the rate of decolorization, COD decrease, yield of CO2 and varies pH of aqueous solution during illumination were detected; The varies of the possible intermediates during degradation process were monitored with UV-VIS spectrum and HPLC. The possible mechanism of Congo red photocatalytic degradation is discussed combined with the data of MS.
本文选择有代表性的常见偶氮染料—刚果红作为研究对象,以自制TiO2为催化剂和小功率紫外灯为光源,在自制光反应器上确定了光催化降解的优化条件,并在这个优化条件下测定了降解过程中的脱色率、COD去除率和CO2生成量;利用数显酸度计、紫外可见分光光度计和高效液相色谱仪跟踪测定了降解过程中的可能产物,并结合质谱的数据初步探讨了刚果红的可能降解机制。
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We organized and identified the specimens which collected in the insects specimens laboratory of life science and technology department of Xinjiang university, from almost everywhere of Xinjiang with combination of the conventional methods and the electroscopic scanning technique.
本文采用常规鉴定方法与雄性外生殖器解剖相结合,辅以扫描电镜观察,对收藏于新疆大学生命科学与技术学院昆虫室20年来积累的标本及三年在校期间系统地采集于全疆各地的拟步甲类标本进行了整理与鉴定,结合野外考察及重要类群的生物学研究,研究其区系成份,并对其区系特征及地理分布状况进行了系统的分析,主要研究成果如下:1)初步查明新疆拟步甲科昆虫共计266种,分隶于23族72属,其中35种为中国新记录种,3种为拟步甲类新种,作新种记述,并附图片;在研究过程中初步探讨了拟步甲的中文命名问题; 2)新疆拟步甲种类繁多,其区系成分分析显示,除12种为广布种以外,共有6种区系成分,其中中亚细亚种为最多,有87种,占已种的32.7﹪;其次依次为中央亚细亚种和特有种,分别为81种和65种,各占已知种类的30.5﹪和24.4﹪;泛古北种12种,占4.5﹪;欧洲西伯利亚种7种,占2.6﹪;欧洲中亚种最少,仅有2种,占0.75﹪,并根据新疆拟步甲科昆虫区系成分分析了其起源问题; 3)新疆拟步甲科昆虫的地理分布表明,分布于准噶尔盆地的种类最为丰富,计161种,占新疆已知种的60.5﹪;其次是塔里木盆地92种,占已知种的34.6﹪;东疆诸盆地63种,占23.7﹪;伊犁谷地56种,占21.1﹪;在三大山系中,天山山系的拟步甲种类最多,为54种,占20.3﹪;阿尔泰山山系28种,占10.5﹪;昆仑山山系13种,占4.9﹪。
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In this part, the densities of sodium benzoate, sodium nitrobenzoate, sodium chlorobenzoate and sodium methylbenzoate in DMFwater mixed solvents have been measured at 298.15K with an Anton Paar Model 55 densimeter. From these densities, apparent molar volumes and partial molar volumes have been calculated, transfer volumes from water to DMF-water mixtures and substituent contributions to the transfer volumes have also been obtained. Solvent and substituent effects are discussed in detail. The Scaled Partical Theory has been applied to the ternary solutions to evaluate the partial molar volumes of cavity formation and the volumes change associated with solute-solvent interaction.
选择了含有取代基团的芳香类有机电解质,主要是苯甲酸钠、硝基苯甲酸钠、氯苯甲酸钠和甲基苯甲酸钠的邻、间、对同分异构体作为研究对象,用DMA 55型振荡管密度计测定了它们在不同质量百分数组成的DMF-水混合溶剂中的密度,利用这些密度数据,计算了表观摩尔体积和偏摩尔体积,得到了这些单取代苯甲酸钠从水到DMF-水混合溶剂中的迁移偏摩尔体积及苯环上不同位置的取代基对迁移偏摩尔体积的贡献值,讨论了溶剂效应和取代基效应,并将定标粒子理论应用于此三元电解质溶液中。
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①Rat MSC and VSMC were cultured and identified, respectively. MSC were labeled with DAPI firstly, and then co-cultivated with VSMC. The changes of morphology and ultrastructure of co-cultured cells were observed. Immunfluorescence analysis was performed by using monoclonal antibodies against specific antigen.②We established the regulatable system in two steps: a stable MSC line expressing rtTA has been constructed and characterized firstly by transfected with pUHD 17-1hyg and then selected by hygromycin B; in a second step, this line was used for trandfer the AT2R gene to MSC to get the well establishing double stable MSC lines;③The expression of AT2R regulated by doxycycline was evaluated by western blot;④The MSCs were transduced into rat carotid arteries with regulatable AT2R gene after the establishment of rat carotid balloon injury restenosis model. The intimal/medial area ratio were measured by digital analysis system.
研究方法:(1)密度梯度离心法及胶原酶消化法分别培养原代大鼠MSC及VSMC,细胞共培养并行免疫荧光化学染色和透射电镜观察超微结构;(2)组成受Dox调控的哺乳动物表达系统的四种成分的转化、扩增及提纯并酶切鉴定;(3)采用常规分子生物学方法连续两个回合转染体外培养的MSC,并分别采用发光计检测不同细胞克隆萤光素酶活性改变以及RT-PCR方法检测AT2R目的基因mRNA表达情况,根据各个细胞克隆受Dox调控表达的程度,选择低背景、高诱导表达AT2R的细胞系,作为双重稳定MSC细胞系;蛋白免疫印迹法观察该细胞系在Dox调控下AT2R表达的时相性、持续性及在不同浓度Dox调控下的表达情况;(4)建立大鼠颈动脉球囊损伤动物模型,将双重稳定MSC在术中导入血管,分别于14 d、28 d进行病理切片,检测可调控AT2R对新生内膜增生的影响;采用RT-PCR免疫组织化学免疫荧光等技术观察AT2R基因在新生内膜中的表达以及细胞外基质成分表达的改变,TUNEL法检测血管组织中细胞凋亡的变化情况。
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Methods: We examined the relations among selected familial andenvironmental factors, markers of allergy, spirometric measuresof lung function, and AHR in a cross-sectional study of 403Costa Rican children with asthma between the ages of 6 and 14years.
鉴于对西班牙美国地区儿童哮喘中气道高反应性的决定因素方面的了解很少,Ly等人对403例Costa Rican哮喘儿童(年龄6~14岁)进行了横向研究,在此研究中我们检测了某些家族和环境因素、过敏标志物、肺功能中肺量计的指标以及气道高反应性间的关系。
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The results indicated that,during MV drying,moisture distribution in wood was relatively uniform,without an obvious moisture content gradient along the direction of thickness of wood.Moisture distribution in wood was more uniform in the last period of drying.Above Fiber Saturation Point,the movement of moisture through wood was assumed to be permeable movement of free water and vapor under the action of pressure gradient;below FSP,moisture existing in vapor form in wood moved in response to a pressure gradient.Moisture transfer caused by heat diffusion and a moisture content gradient could be neglected.
研究结果表明:在微波真空干燥过程中,木材内部的含水率分布比较均匀,在厚度方向没有明显的整体性含水率梯度,特别是在干燥的后期,木材内部的含水率分布更加均匀;当含水率在纤维饱和点以上时,木材中的自由水和水蒸气在压力梯度的作用下以渗透流的形式在木材内部迁移;当含水率在FSP以下时,木材中的水分在压力梯度的作用下以水蒸气的形式向木材表面迁移;因热扩散、含水率梯度引起的水分迁移可以忽略不计。
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For non-diagonal processes there is "Coherent enhancement" therefore the one-phonon processes are more important than the two-phonon processes; At the same time, we presented a new theoretical framework of phonon-assisted energy transfer, in which the running lattice wave theory is introduced instead of the Debye theory for phonons,therefore emphasizes the important effects of optical phonons and coherence effects of anisotropic lattice waves etc.
非对角过程中的干涉是相加的,因而首先应考虑单声子而非双声子过程;接着,用计及原子尺度上晶体结构的&格波模声子&取代各向同性连续介质模型中&德拜声子&来描述所涉声子,提出了新的声子协助的能量传递理论,指出了德拜模型中没有的&光学声子的重要性&和&各向异性的格波干渋&等新视点。
- 推荐网络例句
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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
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Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
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This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。