组织发生的

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

The normal and abnormal embryoid were distinguished by the rate of normal plantlets induced and the regeneration modes of the cottons varieties were compared to two ways, one with the highest rate of normal inducement was the normal way of regeneration plantlet from callus, embryogenetic callus, global embryoid, heart-shape embryoid, torpedo-shape embryoid, cotyledon embryoid to normal plantlet, etc, the other with the lowest rate of normal inducement was the abnormal way from callus, embryoid callus, global embryoid-like, heart-shape embryoid-like, fish torpedo-shape embryoid-like, cotyledon embryoid-like, abnormal plantlet to normal plantlet, etc.

转化后采用平行实验得到不同品种的不同培养体系的愈伤组织、胚性愈伤组织、胚状体、类胚状体、畸形苗和正常苗，以最终正常苗诱导率高的体系的材料作为正常苗的发生过程，以诱导率低的作为畸形苗的发生过程，即分为正常苗的发生过程，愈伤组织——球型胚状体——心型胚状体——鱼雷型胚状体阶段——子叶型胚状体——正常苗：畸形茁的发生过程，愈伤组织——类球型胚状体——类心型胚状体——类鱼雷型胚状体阶段——类子叶型胚状体——畸形苗。

Take the blood specimen to measure the hepatic and renal function and the tissue biopsy after the active and motive abnormities called toxical manifestation such as posture changes, abnormal sound, uneasiness, quiet, thrill, ataxia, convulsion and so on with toxic dose. Measure the tissue biopsy after death with lethiferous dose. If no toxicity or death occur after the experiment of 12 weeks, measure the hepatic and renal function and the tissue biopsy. There was no rat which had the toxical manifestation such as active or motive abnormities and 3 rats died because of environment or others after the experiment of 12 weeks.

实验中分别测定治疗剂量组小鼠在用药4周，8周，12周后的肝肾功能，并进行组织病理检查；中毒剂量组小鼠在出现行为、动作异常，如改变姿势、叫声异常、不安、安静、震颤、运动失调、惊厥等中毒表现时，取血液标本测定肝肾功能，并进行组织病理检查；致死剂量组小鼠发生死亡后进行组织病理检查；若12周实验结束时无小鼠出现中毒表现或死亡，则取血液标本测定肝肾功能，并进行组织病理检查。12周实验结束时，无小鼠出现动作、行为异常等中毒表现，有3只小鼠因为环境或其它原因发生死亡，病理检查结果正常。

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

针对我国、特别是西南山地所需玉米转基因工程育种优良受体极为匮乏和反应玉米幼胚培养能力的2个主要性状，即玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数的遗传变异规律十分不清楚的实际情况，本研究从筛选玉米转基因工程所需要的优良受体入手，采用单因素遗传交配设计、双列杂交遗传交配设计、世代基因效应等传统数量性状分析方法，以及现代分子标记定位主效QTL分析方法，对玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个性状进行了较为系统的分析研究，取得以下主要研究结果：(1)于2000年和2001年通过对我国、特别是西南地区近50份优良自交系和近30个杂交组合，在相同培养条件下，对幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个幼胚培养能力性状进行了筛选与鉴定，发现玉米不同基因型具有完全不同的幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数，但幼胚培养胚性愈伤组织诱导率与胚性愈伤组织绿苗发生数并不具有必然的相关关系，有的基因型，如自交系18-599和18-599在胚性愈伤组织诱导率和愈伤组织绿苗发生数等2个性状都表现相当优异；有的基因型，如自交系综31，仅幼胚培养胚性愈伤组织诱导率性状表现高于19-599和18-599，但在胚性愈伤组织绿苗发生数这一性状则与它们有相当大的差距，仅为19-599和18-599的1/3左右；有的基因型，如S37、R08、R15、P138、A318等玉米自交系不仅幼胚培养胚性愈伤组织诱导率很低，平均仅在3％左右，而且胚性愈伤组织绿苗发生数表现也很差，基本上没有分化成苗。

The two can cause ultrastructural pathogenesis widely in many organs and tissues such as hepar, pancreas, lien, ren, pulmo, cerebral, cerebellum, cor, muscular and so on, of them ,caused by i~olates YG97 and Y98 more obvious in epithelial cells of digestive tract and unobvious in epithelial cells of respiratory tract ,but ultrastructural pathogenesis caused by NDV strain F48E8 ,more obvious and more serious in glandularis and muscularis ventriaculi and in epithelial cells of respiratory tract .

将鹅源分离株YG_(97)、鸡源分离株Y_(98)和NDV强毒株F_(48)E_8感染SPF鸡，运用扫描电镜和透射电镜观察该二株病毒对机体细胞的影响，结果显示三株禽副粘病毒均引起机体肝、胰、脾、肾、肺、小脑、大脑、心和肌肉等实质器官组织细胞的超微病变，其中YG_(97)和Y_(98)引起消化道粘膜上皮细胞发生微绒毛脱落、纤毛脱落、分泌颗粒增多、细胞游离面破溃等显著的超微病变，引起气管粘膜上皮细胞的不显著超微病变；F_(48)E_8强毒株引起胃粘膜显著而严重的超微病变；还引起气管粘膜上皮严重的超微病变。

The animal model of psychological stress was given the conflict of water-drinking and restraint stress, then the rate of the occurrence of the mammary tumor,the level of the corticosterone and the expression of the Hsp70 were compare...

结果 ( 1)实验组的乳腺癌发病率( 71.4%)明显高于对照组的发病率( 2 1.4%)(P 。0 5 )；( 2 )实验组血浆皮质酮水平( 161.5 1± 162 。82 )μg/ml明显高于对照组( 10 。63± 8.3 7)μg/ml( P 。0 1)；( 3 )实验组Hsp70的阳性细胞数目( 12 。47± 11.63 )显著高于对照组( 3 。16± 1.77)( P 。0 1)。结论心理应激促进了Hsp70在C3H/HeJ雌鼠乳腺组织中的表达，Hsp70的过度表达和乳腺癌的发生密切相关。

This paper proposes that the three kinds of practice of self-transformation scientific experiment,production,processing and the transformation society are the fundamental forms of practice.

犤268适应生产实践活动的需要，与生产实践同时发生的是处理人与人之间社会关系的实践活动，即人类的社会交往以及组织、管理和变革社会关系的活动。

This article studies inducements and influencing factors of undergraduate collective behavior in China after 1990′s.

所谓群体行为，就是&指那些相对自发的、无组织的和不稳定的情况下，因为某种普遍的影响和鼓舞而发生的行为&[1]。

Mark's see Epiph.

haer ， lxix ）和牧师的亚历山大教堂世卫组织已跌至谴责下，为他在这项meletian麻烦期间发生的主教的圣彼得大教堂，其教义已成功地使危险的进展，甚至在& consecrated处女&的圣马克见

And unlike in Seoul, where public sentiment was still inflamed by a massacre of protesters in Kwangju eight years earlier, there is no particular rallying cause in China today. The 1989 killings in Beijing have become a distant memory. Although many Chinese citizens have grievances against officialdom, these would be hard to galvanise into an organised protest movement.

另外在汉城是因为民众对八年前在光州对抗议者的屠杀的愤怒依然存在，而现在的中国却没有什么可能引发抗议的原因。89年在北京发生的杀戮已经成为遥远过去的回忆，虽然有不少中国人对官僚主义抱有不满，但很难考虑这种不满会发展到有组织的抗议行动。

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。