后节

On the other hand, because the insular region is mainly supplied by the M2 segments, only loss of the insular ribbon without obscuration of the lentiform nucleus may be usually seen in type 3 or type 4 occlusions. Although there are few exceptions of type 1 occlusion manifesting a grade I CT sign in the very early period of ischemia, grade I CT signs are usually considered as supporting evidence of absent lenticulostriate artery involvement.

尽管在缺血性卒中发病后的超早期，1型大脑中动脉闭塞（大脑中动脉主干起始段闭塞）患者的深部大脑中动脉分布区可能偶尔也会出现I级早期CT征象（细微低密度区局限于岛叶，基底节区正常）；但深部大脑中动脉分布区I级早期CT征象（细微低密度区局限于岛叶，基底节区正常）的出现，通常提示豆纹动脉未受累。

When surgery is indicated after central cord injury in the stable spondylotic spine, it is the overall cervical spinal alignment and the number of levels affected that determine the surgical approach.30 When the spine is lordotic, and particularly when there are multiple levels of compression; a posterior approach, either a laminectomy and fusion or a cervical laminoplasty are recommended approaches.28 If the spine is neutral or slightly kyphotic, then occasionally, after a posterior laminectomy, lordosis may be achieved with intraoperative positioning and maintained with posterior lateral mass fixation and fusion.

当不伴有颈椎不稳的颈椎病并颈髓中心管损伤患者需要手术治疗时，整个颈椎的序列和受累的节段决定了手术入路的选择。颈椎处于前凸状态，尤其是多节段颈髓均有受压时，建议采用后方入路进行全椎板切除融合或颈椎椎板成形术。假如颈椎处于中立位或稍微后凸时，有时通过后方的全椎板切除，术中复位和侧块螺钉固定融合，可以恢复颈椎的前凸。

Methods: Artificial infection to healthy Penaeus monodon and determination of the relative content of WSSV DNA in blood after infection.

对健康斑节对虾进行人工感染，同时用套式PCR检测感染后斑节对虾血液中病毒核酸的相对含量。

Well developed shoots were successfully obtained after 45 days of culture of shoot tip explants on MS medium supplemented with 4-8 mg/l Benzylaminopurine and 0.5 mg/l α-Naphthaleneacetic acid. Addition of 0.01-0.5 mg/l Thidiazuron in the medium was found to be beneficial for rapid growth of shoot tip explants.

培植体培养於MS基本盐类并添加4-8mg/l BA和0.5mg/l NAA的培养基45天后，对促进新茎节萌发效果良好；而接种於含0.01-0.5mg/l TDZ固体培养之茎顶培植体，也显示有促进茎节快速生长的作用。

The outer neuroblastic layer before it divided to inner and outer nuclear layer and outer complexiform layer and gonglion cell layer showed a temporal PCNA positive which was related to proliferation. The three cell layers had another PCNA positive when finished time changed from outer to inner after their morphologic development basically completed( outer nuclear layer:11～15 days,inner nuclear layer: 8～16 days, gonglion cell layer:16～21 days).

PCNA显示在外成神经细胞层分化为内、外核层和外丛状层之前，和节细胞各有一次和增殖相关的阳性表达。3个细胞层在形态学的分化基本完成后，又出现了一次结束时间是由外向内变化的阳性过程（外核层：第11天至15天：内核层：第8天至16天，神经节细胞层： 16天到21天，这一次阳性表达过程可见到细胞形态向成年形态的转化。

There is a characteristic principle during the development of the NOS positive cells in pterygopalatine , otic ganglion and the fibers innervating the cerebral vessels of rats.

出生后翼腭神经节和耳神经节及脑底动脉壁神经纤维一氧化氮合酶表达的年龄变化有其特定的规律。

Methods: The motion of parasternal papillary muscle anterior wall, inferior wall, posterior wall, and lateral wall were detected by 2DE at short axis view of left ventricle before PTCA, 3 d and 1-3 months after PTCA in 33 cases of patients with coronary heart disease, who received PTCA+stent at selected time. Peak systolic velocity of subendocardial, subepicardial and middle layer myocardium, transmural velocity difference of the same segments and Outer lateral mitral valve annulus were also detected at apical 4 chamber view by pulsed wave tissue Doppler imaging.

对33例择期行PTCA+支架术的冠心病患者用HP5500型超声诊断仪，于PTCA术前及术后3d、1-3个月对胸骨旁左心室乳头肌短轴切面的前间壁、下壁、后壁、侧壁行二维超声心动图(2DE)检测各节段的室壁运动情况，用脉冲组织多普勒成像检测上述各节段的内、外膜下及中层心肌的收缩期峰值速度，内外膜下心肌的收缩速度差及心尖四腔观二尖瓣外侧环的收缩期峰值速度。

RESULTS: HIF-1α positively expressed at stratum neuroepitheliale retinae and purpurogenous membrane in the embryonic phase. Additionally, HIF-1α still positively expressed at stratum neuroepitheliale retinae and purpurogenous membrane, especially in ganglionic cells and inner plexiform layer, in early development.

结果：胚胎期视网膜神经上皮层及色素上皮层均有低氧诱导因子1α阳性表达，生后发育早期视网膜神经上皮层及色素上皮层也可见低氧诱导因子1α阳性表达，以神经节细胞、内网层更明显，随着发育进展，其阳性表达主要位于视网膜节细胞层。

Standard midline posterior subperiosteal dissection is carried out, extending at least 2 levels above and below the damaged vertebral body.

进行标准的后正中线骨膜分离。切口延伸到受损节段上下至少两个节段。

After fixing the two sides standard sections, the hoisting machine loosen rope, pull out the two end horizontal pin of pillar, lift the pillar to the place of two section standard section's middle angle steel, the operation staff leave the suspension coop.

待两侧标准节连接固定好后，卷扬机松绳，拔出顶梁两端横销，用手摇起重机上小吊杆将顶梁提到新接好的两节标准节中间框架角钢处，穿好横销并锁定，操作人员离开吊笼。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐