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The dynamic changes of the number of T or B lymphocytes and the content of immunoglobulin G, IgM, IgA in peripheral blood, the number of CD〓, CD〓 lymphocyte subpopulation, T〓 cells and IgG, IgM, IgA antibody-producing cells, the ratios of CD〓 and CD〓 T cells in immune organs (thymus, bursa of Fabricius and spleen) and immune tissues (cecal tonsils and Harderian glands), the content of IgA, IgM, IgG in local fluid (tear, tracheal fluid, intestinal fluid and bile) of one-day chicks infected with chicken infectious anemia virus and CIAV-infected chicks immunized with Newcastle disease vaccine were determined respectively by immunohistochemistry, immunogold-silves and immunoenzyme staining in order to reveal mechanism of immunopathogenesis of chicks infected with CIAV and influence of immune responses of CIAV-infected chicks to ND vaccine.

中文题名雏鸡感染鸡传染性贫血病毒后免疫变化和对新城疫疫苗的应答及其免疫机理副题名外文题名 Immune changes of chicks infected with chicken infectious anemia virus and immune response and mechanism to Newcastle disease vaccine immunity 论文作者郑世民导师刘忠贵教授学科专业基础兽医学研究领域\研究方向学位级别博士学位授予单位东北农业大学学位授予日期2002 论文页码总数105页关键词鸡传染性贫血病雏鸡新城疫疫苗馆藏号BSLW /2003 /S858 /9 本项研究采用免疫组织化学、免疫胶体金及免疫酶方法，首次对CIAV感染1日龄雏鸡和CIAV感染雏鸡ND疫苗免疫及vNDV攻击后，其外周血液的T细胞、B细胞数量和IgG、IgM、IgA含量；中枢免疫器官胸腺和法氏囊，外周免疫器官脾脏及呼吸道和消化道局部粘膜免疫组织哈德尔腺和盲肠扁桃体的ANAE〓、CD4〓、CD〓T细胞、IgG、IgM、IgA抗体生成细胞数量和CD〓与CD〓T细胞比值以及泪液、气管液、肠液、胆汁的IgA、IgM、IgG含量的动态变化规律和CIAV感染对ND疫苗的免疫保护率等进行了全面系统地研究。

Objective To investigate the intensity changes of different thickness ratios of Empress Ⅱ glass ceramic and GI-Ⅱ glass-infiltrated alumina ceramic before and after Hertzian contact cyclic fatigue.

目的 考察不同厚度配比的EmpressⅡ热压铸造陶瓷和GI-Ⅱ型氧化铝渗透陶瓷层状复合结构经Hertzian循环疲劳前后强度的变化。

The scaling rule for hydrogenic impurity binding energy and the Virial theorem value in quantum wells and wires of rectangular cross section with three different section ratios are studied through the variational method.

利用变分法计算了矩形量子线和量子阱中类氢杂质束缚能的度规法则和维里定理值。

The comparative studies of lithogeochemistry for the volcano-intrusive complexes both from Jiulongzhang and from xiangshan reveal that the chemical compositions of the volcano intrusive complexes in the two areas are very close, and the trace element spidergrams and REE patterns basically coincide with each other. It is also shown that the two volcano-intrusive complexes have the same source features and the active continental margin tectonic settings. At the same time, it is found that, from early volcanic magma activities to later intrusive magma activities, the content of SiO2 and the Rb/Sr ratio decreased, on the contrary, the content of MgO and the ratios of K/Rb, Ba/Rb and LREE/HREE increased. It is shown that the hypabyssal or ultra-hypabyssal intrusives are not the products of the volcanic magmatic differentiation.

两地区的火山－侵入杂岩的岩石化学成分及其变化特点极为相近，微量元素蛛网图和稀土配分型式也基本一致，它们具有相似的岩浆过程和统一的活动陆缘构造背景；同时，从早期火山岩浆活动到晚期浅成－超浅成岩浆侵入活动，其w(SiO2)和w/w的值降低，而w以及w/w、w/w和w/w的值增高，晚期浅成－超浅成侵入岩与早期火山岩没有直接的分异演化关系。

The new testing method of RH inconcrete was proposed firstly in the domestic, and it was applied to measure the water changes inconcrete induced by moisture diffusion and self-desiccation. The internal RH change rules of cementpaste and concrete with different water-cement ratios and cementitious material systems due tomoisture diffusion and self-desiccation were studied systematically.

在国内首次提出了混凝土内部相对湿度测定的试验方法，并系统研究不同水灰比、胶凝材料体系的水泥浆体与混凝土水分扩散与自干燥引起的内部相对湿度变化规律。

As specific forms they are distinguishable in a range of ways: their screen ratios are quite different; while films are often shown as discrete texts, television, as Raymond Williams argues, can be thought of as a "flow" of images which seem to merge almost indistinguishably together in countinuum; and both television programmes and films are produced with their contrashting contexts of consumption in mind.

作为具体形式，他们区别在一系列的方法：他们的屏幕比率有很大的不同；而电影往往表现为离散文本，电视，威廉斯辩称，可认为是作为一个&流&的形象似乎合并几乎indistinguishably一起在countinuum；都电视节目及电影制作与contrashting背景下的消费在铭记。

Samples of five sets of different mole ratios of the catalyst and caprolactam were sealed inseparate tubes and heated at 230±1° in a specially designed tube furnace.

分别以五种不同量的6-氨基己酸为催化剂于230±1°在封管中进行己内醯胺的聚合。

Samples of five sets of different mole ratios of the catalyst and caprolactam were sealed inseparate tubes and heated at 230±1° in a specially designed tube furnace.

测定其各组试样在各反应时间后所得聚合产物中的单体含量，低聚体含量和聚合体生成量，以及聚合体的数均分子量。

Having analysed notonly the frequency characteristics of signal and random noise but also influence ofnoise upon filter under different signal/noise ratios, authors studied noise elimina-tion using inversion in wavelet trans form domain and then advance frequency- divi-sional inversive noi.

本文通过分析信号与随机噪声的频率犄性及在不同信噪比情况下噪声对滤波器的影响，研究了小波变换域中的庆演去噪情况，提出分频反演去噪方法。

And, the spatial character of electron temperature in plasmas was determined via isoelectronic spectral line intensity ratios.

在此基础上由双示踪元素等电子谱线法确定了Mg/Al混合材料埋点靶激光等离子体电子温度空间分布。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。