器官的

Show model combines growth model, math model and VR technologies to design the proper object structure of each organ of virtual plant. First of all,research background, research content of virtual plant area and Virtual Reality technology are introduced. The concept of VR and research content of virtual plant are defined. Secondly, we analyze math model of virtual plant, including Bezier curve, NURBS curved surface, fractal system, L-system and Catenary curve. Thirdly, we give show model of virtual plant in detail. Finally, the design of the platform and growth model on XML script is introduced , and how to show the virtual plant in the platfrom is discussed too.

本文首先介绍了虚拟植物领域的研究背景、研究内容和虚拟现实技术，明确了虚拟现实的概念和虚拟植物的研究范畴，然后介绍了虚拟植物器官的数学模型，对各个器官展开了拓扑结构分析，建立有针对性的数学模型，先后介绍了Bezier曲线，NURBS曲面，分形系统，L-系统和悬链线曲线，接着详细分类介绍了虚拟植物器官的显示模型，最后介绍了虚拟作物平台的设计，平台中基于XML脚本的生长模型，以及虚拟作物在作物平台中的显示。

But the malignant tumor may also disorganize, organ's structure and the function, causes necrosis hemorrhage merge infection, the patient is possible as a result of the organ function failure to die finally.

但恶性肿瘤还可以破坏组织、器官的结构和功能，引起坏死出血合并感染，患者最终可能由于器官功能衰竭而死亡。

No significant effects were observed at 30 Gy, but the hemopoietic organs capacity was disrupted at 50~300 Gy. The hemocyte density of the larvae irradiated at different developmental stages showed suppressed increments, and carbon-ion irradiation given to the larvae at early stages compared to the later stages had a significant suppressive effect on the hemocyte density.

结果表明 30 Gy 照射对造血器官的造血机能没有明显的影响， 50 Gy 照射能引起造血器官的机能低下， 50 ～ 300 Gy 之间没有明显的剂量依存关系；不同发育阶段幼虫的造血器官表现为随着个体的发育对重离子射线的感受性降低，雌雄间没有明显的性别差异。

In a separate study, Ricordi's group added perfluorocarbon to the standard University of Wisconsin organ preservation solution, allowing them to use islet cells from marginal organs that would have typically been discarded under current organ donor criteria.

在另一项研究中，Ricordi的小组将perfluorocarbon加入标准的威尔康辛大学器官保存液中，利用来自周边器官的胰岛细胞，这在现有的器官捐赠体标准中是应当被放弃的。

When the organ perfusion pressure changes, the arteriole resistance also change to keep the organ blood flow at a constant level, which is called the autoregulation of the blood flow.

当器官灌注压发生变化时，该器官的微动脉阻力也发生改变，使器官的血流量保持相对恒定的现象称为血流量的自身调节。

"Evidence supporting transplantation as the route of transmission ranges from circumstantial (ie, development of TB in the transplanted organ within a few months of transplantation) to well-established (ie, 2 recipients of a single donor's organs both developing disease through genotypically identical M tuberculosis , of which there have been 2 previous reports [4 prior recipients from 2 donors])," said Gregory Rose, MD, from the Division of Infectious Diseases, Ottawa Hospital, Ontario.

安大略渥太华医院感染疾病部门的Gregory Rose医师表示，证据支持器官移植作为疾病传播的路径从依情况而定的（例如在移植后数月后才发生TB）到根深蒂固的，例如两位受赠者同样接受一位捐赠者的器官，且都得到以基因型确认的分支结核杆菌，过去已经有两个报告（从两位捐赠者得到器官的四位受赠者）。

Because homeotic gene mutation and floral organ variation is a direct relationship,therefore the mutant application is the current functional genomics study developmentdirection. We discovered one mutant ah from line 458, which was a line ofthe twin-seedling strain W2555.ln this study, we have investigated the morphogenesisprogress, genetic analysis of mutant traits and molecular tagging of related gene.

目前，由于在水稻中发现的花器官突变体很少，所以对水稻花发育的研究主要是利用双子叶植物MAS-box基因的保守序列设计引物，在水稻基因组或者cDNA文库中筛选与双子叶植物花器官发育相对应的MADS基因，因为同源异型基因的突变与花器官的变异是直接对应的关系，所以突变体的应用是当前功能基因组学的发展方向。

The expression of HSP70 and HSP70mRNA and the activity of SOD and NOS in uterus were elevated with preventive acupuncture and preventive moxibustion and the influence on the activity of SOD and NOS was mainly refected in 12th and 16th month. It indicated that preventive acupuncture and preventive moxibustion on Guanyuan point could relieve the abnormal activity of center of stress, promote the expression of HSP70 and HSP70mRNA and the activity of SOD and NOS in uterus so as to maintain the normal structure and function and prolong the retrograde degeneration of uterus. It might be one of mechanisms of protecting uterus with preventive acupuncture and preventive moxibustion.

提示逆针灸关元穴对随后更年期大鼠子宫产生保护作用机制可能通过减缓应激中枢的异常活跃状态，提高不同月龄外周子宫组织细胞HSP70及mRNA的表达，以促进组织SOD、NOS活性的增强，对抗应激激素及卵巢功能衰退引起的子宫靶器官的结构及功能的改变，提高机体抗氧化能力，增强NO/NOS的局部调节作用，减轻随后更年期衰老过程中自由基对组织器官的损害及组织器官功能紊乱，对于维持子宫正常的结构和功能，延缓子宫退行性变具有重要作用。

Cutting process of soft tissue and organs is very important in virtual surgery simulation. Tetrahedron is widely used to construct the geometric model of virtual organs. Efficient methods must be developed to split or merge tetrahedrons in order to adapt to topology changes during cutting process. The main parts of this thesis are the two chapters on "Reconstruction of Tetrahedrons" and "Stability of Tetrahedrons".Main research work I have done is listed as follows:1 Reconstruction of Tetrahedrons.

人体软组织及器官的切割仿真是虚拟手术仿真的重要组成部分，软组织及器官的几何模型普遍采用四面体模型，切割的同时，软组织及器官的拓扑结构发生变化，模型中的部分四面体基元必须能够通过分裂或合并以适应上述变化，医学数据在三维场景中的交互和可视化是手术仿真的基本要求，因此，第二章&四面体重构&以及第三章&四面体单元稳定性&是本文重点讨论的两个部分。

In the model of dry-distribution,the leaf age of different plants leaves and the distribution of assimilation at different positions were confirmed based on the distribution process of assimilation in combination to the organ building process.

基于黄瓜器官建成的同化物分配模型中，在现有的同化物分配理论的基础上，提出了基于器官发育模型的同化物再分配过程模拟，将器官的形态扩展和同化物分配过程相结合，确定了不同植株叶龄、不同位置的叶片获得的干物质模型，将同化物分配和形态扩展过程有机地融为一体。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。