根段

Optimal screw path length: The distance from the optimal entrancepoint to the optimal vent point Screw tail distance: The distance between left and right optimalentrance point Transverse section angle: Half of the included angle between left andright optimal screw Sagital section angle: The average of angle between both side optimalscrew with the upper terminal plate 1.2.2 Modify the threshold of CT value to distinguish the rear partof the lumbar, Observate the the optimal entrance point and the adjustable range.

1.2.2三维重建观察螺钉最佳进钉点的位置和各方向螺钉进钉点关系，调整CT值下限阈值使椎弓后部结构尽量显示清晰，以利观察。 1.3统计方法本实验采用SPSS13.0统计软件。对同一椎体左右两侧椎弓根螺钉相对数据行计量资料配对样本t检验，对男女组间相关数据行计量资料独立样本t检验，对男女组内不同腰椎节段间相关数据行单向方差分析及不同腰椎节段间LSD法多重比较。

The determination of the collocation place of metal wires, the principle of choosing the quantity of wires and the initial grain type and the ratio of initial burning surface to throat area are stated.The local ablation of thermal insulation barrier in nozzle convergence region and of throat insert is analysed.

论述了金属丝布置位置的确定及金属丝根数的选择原则；初始药型及初始面喉比的选择；分析了喷管收敛段绝热层及喉衬的局部烧蚀问题；阐述了过渡段燃面变化的计算方法，并附有计算机程序。

The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.

因此，松辽盆地上、下白垩统的界线应在泉头组的底界，即泉头组与登娄库组之间，而不是泉头组的顶界。2、青山口组一段黑色泥岩、页岩具有有机碳含量高、重排甾烷含量低，生物标志物出现28，30—双降藿烷和伽马蜡烷，干酷根碳同位素具有正向偏移等有机地球化学特征，表征为青山口组一段黑色页岩、油页岩是古湖泊缺氧事件的产物，它对应于白垩纪古海洋Cenomanian—Turonian期界线附近缺氧事件，二者具同步性。3、通过生物地层学、年代地层学、磁性地层学和事件地层学研究，认为泉头阶大体相当于Cenomanian阶，青山口阶相当于晚Cenomanian—早Turonian阶，姚家阶对应于晚Turonian—Coniacian阶，嫩江阶对应于Santonian—Campanian阶，四方台阶和明水阶相当于Maastrichtian阶。4、通过对松辽盆地上白垩统的岩性、岩相及微体化石分析，认为滨浅湖相是微体生物群最为发育的相带，其次为三角洲前缘相和三角洲分流平原相。

Some sensory neres from the L2 and L5 ertebral bodies enter the paraertebral sympathetic trunks and reach the DRGs at multisegmental leels.

L2和L5的感觉神经纤维分别来自T11-L3和T13-L6的背根神经节。L2和L5椎体的一些感觉神经进入脊柱旁的交感神经干，最终到达多节段的背根神经节。

METHODS: The stability of intact specimens in flexion, extension, lateral bending and torsion was examined. A fracture model was created using dropping technique. The fracture model was instrumented with short-segment pedicular screw fixation (4-screw construct) or the intermediate screws structure (6-screw construct).

测量完整标本前屈-后伸、侧屈及旋转的稳定性后，通过重物撞击技术制造伤椎骨折模型，然后对每个标本行传统短节段椎弓根螺钉固定（4枚螺钉固定）及增加骨折椎椎弓根螺钉固定（6螺钉固定）。

Objective To search a safer and a perfect method of locating of pedicle of vertebrarium treating thoracolumbar fractures and dislocation.

目的 根据X线片和CT片测量胸腰段椎弓根及其相应结构的解剖参数，探讨总结一种椎弓根钉置入的改良方法。

Significance:(1)The phenomenon that soluble proteins coming from sciatic nerve segment under going Wallerian degeneration make axonal number of the dorsal root ganglia decrease and axons adhere to each other are first observed in our essay.

变性神经段中可溶性因子能够促进神经元轴突的生长、轴突直径增加；通过形成浓度梯度诱导轴突生长的方向、减少背根神经节再生轴突数目和使背根神经节轴突之间相互粘附。

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在某段时期，被误以为是&炫耀根硕&的张根硕，曾经因为他迷你小窝里的某些留言而受到了很大的打击。

BACKGROUND: Thoracic pedicle screw technique has been widely used in recent years, so the pedicle screw system plays a more key role in the treatment of idiopathic scoliosis.

学术背景：近些年来胸段置入椎弓根钉技术广泛普及，使得椎弓根钉系统在治疗特发性脊柱侧凸中起到越来越关键的作用。

GPigeon.uac be injected once your computer, under normal circumstances, a variety of the latest anti-virus software is able to Jiesha it, but can not completely remove the Trojan horse "poisonous root," It was because of "gray doves" Of the *. exe files can not be found in the anti-virus software -"dove gray" does not belong to horse-attack from time to time, only every time the computer system to start this normal for a very short period of time attack, the main document to be registered as a Services, will be activated every time the normal release *. dll and * _hook.dll virus, inject them like explorer.exe, iexplore.exe, csrss.exe, lsass.exe process systems, the various anti-virus software can be found Jiesha and in a timely manner, but can not find the root poisoning.

GPigeon.uac被注入你的电脑，一般情况下最近的各种杀毒软件是能够截杀它，但是不能完全、彻底地清除木马的&毒根&，究其原是因为&灰鸽子&的的*。exe文件不能被各杀毒软件查到——&灰鸽子&不属于定时发作型木马，只在每次电脑启动到系统正常这一段很短的时间内发作，主文件被注册成一个服务，每次正常启动将释放*。dll和*_hook.dll病毒体，把他们注入像explorer.exe，iexplore.exe，csrss.exe，lsass.exe等系统进程，因此各种杀毒软件可以查出并及时截杀，但总不能找到&毒根&。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。