后壳

Then followed by an apparent isobaric colling process with the appearance of an anti-clockwise PTt path, which implicates extension and thinning of the continental crust with the formation of thick sedimenting sequences in early stage, and the closure of rifted basin accompanied by slightly tectonic thicken under a compression regime in late stage.

采用石榴石微区温压计对儿个典型富铝片麻岩样品的估算结果显示，荆山群富铝岩系变质峰期的温度为720～770℃，压力为0.6～0.68GPa，峰期后存在较明显的近等压冷却过程，PTt轨迹为逆时针样式，反映陆壳先拉张减薄并接受沉积，后又挤压增厚的壳内裂陷带发育及闭合过程。

Histological structures of bursas of Fabricius were observed at the different developmental stages from chicken embryoes to chickens. The results were as follows. The bursa of Fabricius began to develop on the 13th day of post-hatching and its cell aggregated into the nodosity clique underneath the epithelium mucosae. On the 15th day of post-hatching, those cell cliques were surrounded by the flat epithelium and formed the basic structure of folliculus lymphaticus. The number of lymphocytes in the folliculus lymphaticus increased gradually, and the medulla and cortex of a majority of folliculus were not discriminated obviously. Until on the 7th day for chickens, the medulla and cortex of folliculus formed completely and the number of folliculus increased significantly. From 21 to 35 days old, the folliculus lymphaticus transformed from polygon into rectangle. Mucosa epithelial cells increased gradually and their cytoblasts arranged compactly into aline in the basilar part on the 35th day.

本研究观察了从鸡胚到出壳后的不同生长发育阶段法氏囊的组织结构，结果表明：胚胎13日龄时，法氏囊开始发育，粘膜上皮下形成结节状细胞集团；胚胎15日龄，聚集的细胞集团形成初始的淋巴滤泡；胚胎18日龄到出壳后1日龄，滤泡内淋巴细胞数量增多，多数滤泡髓质和皮质界限仍不明显；7日龄雏鸡法氏囊髓质皮质分界清晰，滤泡数量显著增多；21日龄到35日龄，滤泡由多边形逐渐转变成长方形；在35日龄时，粘膜上皮细胞逐渐增多，排列紧密，细胞核紧密排列成直线位于基底部。

From thermal analysis, weight loss occurs pronouncedly at temperatures above 300 oC in air and the residual weight increases with the reaction temperature. The particle size decreases with the increasing ethanol concentration., while the BET surface area decreases when the concentration of water is increased. Pore size measured from the as-synthesized particles is about 2.7 - 4 nm and this becomes slightly smaller after calcination which is about 3 - 5 nm.

TG/DTA中温度上升至约300 oC时，重量开始明显失重，随著合成反应温度上升，最终残留量由1~3%提高为约5~7%，动态光散射粒径分析发现随著乙醇含量增加，煅烧前与煅烧后的粒径尺寸均有下降趋势，随著水含量的增加，比表面积值随著下降，煅烧后的壳层孔隙尺寸约为3~5nm，煅烧前的壳层孔隙尺寸为2.7~4 nm，煅烧后的孔隙度会略为上升。

In order to find the post-buckling path for ring-stiffened shells under hydrostatic pressure and consider the practical shapes of ring sections, the Compound Strip Method is applied to the post-buckling analysis of ring-stiffened cylindrical shells.

为了研究水压作用下的加肋柱壳的后屈曲状况，并且能考虑到肋骨的实际截面形状和分布情况，本文将复合有限条方法应用于环加肋圆柱壳的后屈曲分析。

The material for formation of the granitoids isderived from mixing sources of crust and mantle, with decreasing in crust-derived componentsfrom early to late.5. The tectonic setting for formation of the Mesozoic granitoids in the region isdefined as a post-collisional setting. The occurrence of a small part of rocks with characteristics ofcollisional or anorogenic granitoids provides evidence for the continuous process oftransformation of tectonic regime from collisional through post-collisional to anorogenic.6. Themultiple cycles of mantle-derived magma underplating caused by the multiple stages oflithospheric thinning in the Mesozoic result in the partial melting of middle to lower crust orcrust-mantle syntexis to form magmas. The crystallization of these magmas emplacing afterfractionation is responsible for the formation of the Mesozoic granitoids in this region.

形成花岗岩类的成岩物质来自壳幔混源。5、河南省西部地区中生代花岗岩类成岩构造环境为碰撞后环境，部分岩石具有碰撞期或非造山期花岗岩的某些特征，表明碰撞后阶段既是碰撞造山过程的延续，又是向非造山环境的构造转换时期，因而其岩浆活动在一定程度上仍然继承了碰撞前消减时期和碰撞时期已经活化的岩浆源区性质。6、研究表明，区内中生代多阶段的岩石圈减薄作用引发多旋回的幔源岩浆底侵以及中下地壳的部分熔融或壳幔同熔，由此形成的岩浆经分异演化后侵位可以形成区内的中生代花岗岩类。

Pump cavity and tooth wear shell after shell pump cavity and repair of worn teeth, a great impact on the fuel pump.

泵壳内腔与轮齿磨损后的修复泵壳内腔与轮齿磨损后，对水泵油量影响很大。

Pump c**ity and tooth wear shell after shell pump c**ity and repair of worn teeth, a great impact on the fuel pump.

泵壳内腔与轮齿磨损后的修复泵壳内腔与轮齿磨损后，对水泵油量影响很大。

Based on examinations of type specimens housed at PE, lectotypes for five names of Chinese taxa in Fagaceae, Papaveraceae, Capparidaceae and Cruciferae are here designated under Article 8.1, 9.9, 9.10 and 37.2, Recommendation 9A.2 and 9A.3 of the International Code of Botanical Nomenclature, because the types were respectively indicated by reference to a gathering that consists of more than one specimen, or more than one gathering were simultaneously designated, without indicating the type in the protologue.

摘要查阅保存于中国科学院植物研究所标本馆的壳斗科、罂粟科、山柑科和十字花科植物的模式标本时，发现有5个植物名称的模式均多于1份标本，或同时引证1号以上的标本而没指定模式，根据《国际植物命名法规》规则8.1、9.9、9.10和37.2，以及辅则9A.2和9A.3的精神，对这些名称做出后选模式指定。关键词壳斗科；罂粟科；山柑科；十字花科；后选模式

The results of study show:1. White pulp and red pulp in parenchyma of spleen of embryo can be obviously discerned after 18 days. Periarterial lymphoid sheath and ellipsoid periarterial lymphoid sheath also can be obviously discerned in spleen of 4 days chicken. T, B lymphocytes in appendix basement of embryo emerge after 20 days. It is the initial shape of cecal tonsil. Crypt structure of conjunction of esophago and stomachus glandularis form obviously at 4 days. It is the initial shape of esophago tonsil. The germinal center firstly emerges in these three organs at 14 days. With the increase of day age, the characteristic structure peripheral immune organs gradually develop mature. Spleen achieve mature at 21 days and cecal tonsil at 35 days.2. IgM~+ and IgA~+ cells in spleen of embryo emerge at 15 days. IgG~+ cell, CD3~+ and CD8~+T lymphocytes of embryo emerge at 20 days. CD3~+, CD8~+ and IgM~+ cells in cecal tonsil of embryo emerge at 20 days. However CD4~+, IgG~+ and IgA~+ cells all emerge in 1 day age chicken out of crust. CD3~+, CD4~+, CD8~+, IgM~+ and IgG~+ cells in esophago tonsil of embryo all emerge at 20 days. However IgA~+ cells emerge in 1 day age chicken out of crust.3. The amount of T, B lymphocytes in peripheral immune organs increase follow with the increase of day age, and hold an upgrade tendency. The amount of T, B lymphocytes in spleen achieved stabilization at 21 days, and in tonsil of esophago and appendix at 35 days.

研究结果表明：1、在组织结构方面，脾脏实质内的白髓与红髓在胚胎18日龄后明显可辨，4日龄雏鸡脾脏中形成明显可辨的动脉周围淋巴鞘和椭球周围淋巴鞘；盲肠基部T、B淋巴细胞在胚胎20日龄时开始出现，即初步形成盲肠扁桃体；食管与腺胃结合处在4日龄时形成明显的隐窝结构，即食管扁桃体初步形成；14日龄时，三种器官中首次出现生发中心；随着日龄的增长，外周免疫器官特征结构不断发育成熟，脾脏在21日龄时达到成熟水平，盲肠扁桃体和食管扁桃体在35日龄时达到成熟水平。2、在T、B淋巴细胞出现时间方面，脾脏中IgM~+和IgA~+细胞在胚胎15日龄时开始出现，IgG~+细胞、CD3~+和CD8~+T淋巴细胞在胚胎18日龄时出现，CD4~+细胞在胚胎20日龄时出现；盲肠扁桃体中CD3~+、CD8~+和IgM~+细胞在胚胎20日龄时开始出现，而CD4~+、IgG~+和IgA~+细胞均在雏鸡出壳后1日龄时出现；食管扁桃体中CD3~+、CD4~+、CD8~+、IgM~+和IgG~+细胞均在胚胎20日龄时开始出现，而IgA~+细胞则在雏鸡出壳后1日龄时出现。3、在T、B淋巴细胞数量变化方面，外周免疫器官中T、B淋巴细胞的数量随日龄增长，整体均呈上升趋势。

METHODS: Acetic acid solution was added into chitosan to prepare 8% chitosan acetic acid hydrosol, which was then stayed for one day. Flowing the immersion into the hydrosol and immediate dislodgement, plastic tube was soaked in 1 mol/L sodium hydroxide for 3 minutes. Hydrosol out of the tube etiolated and coagulated into jells, the tube was removed when the jells were semi-dried.

利用乙酸溶液制备8%壳聚糖乙酸水溶胶，溶胶放置1 d，将硬塑料管浸入溶胶后迅速取出放入1 mol/L氢氧化钠液内3 min，见管外溶胶变白凝固成胶冻状，取出后晾到五分干后轻轻退下内管，晾干后即成为壳聚糖导管。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。