管

objective to investigate the effect of radiography and method of operation on the surgical indication as well as the operation treatment of lumbar disc herniation and lumbar canal stenosis.methods the data of 300 cases with lumbar disc herniation and lumbar canal stenosis were reviewed from jan 1999 to dec 2004.all cases were treated by the method of minimal invasive open operation.the nucleus was resected through an 3.5～4.5cm in length.the sacrospinalis muscle between laminae was stripped partly and the part of upper lamina and the part of medial facet was resected.

目的 探讨影像学检查和手术方法对腰椎间盘突出症和椎管狭窄症手术方式和适应证的影响。方法自1999年1月～2004年12月，为300例腰椎间盘突出症和椎管狭窄症患者实施微创开放式手术，做3.5～4.5cm长的皮肤切口，剥离椎间的部分骶棘肌，咬除部分椎板上缘及小关节内侧缘后，摘除髓核，并根据需要做半椎板或全椎板手术或扩大神经根管和切除肥厚的黄韧带及神经管内的骨性增生。

Methods Sixty NPC patients were randomly divided into two groups: the control group and the salpingocatheterism group.

方法将60例NPC患者随机分成两组，每组各30例，一组患者在鼻内窥镜下经咽鼓管置管为实验组，另一组不置管者为对照组。

In the past seral years of development, our company assets up to 50 million , become the first class agent of Baoshan iron and steel plant , Chengdu steel plant, Baotou steel alt at so.

公司拥有九条管件、四条三通、异径管生产线，年产各种材质型号的管件四万吨。

The results of studying the effects of several plant growth regulating substances on pollen germination and tube growth in pear (Pyrus serotina Rhed.) by cultivating pollens in liquid media showed that GA3,TRIA,IAA and 2,4D stimulated pollen germination and tube growth when pollen was cultivated in their lower concentration media.

采用花粉液体培养法研究了植物生长调节物质对梨花粉萌发和花粉管生长的影响，结果表明：较低浓度的赤霉素、三十烷醇、吲哚乙酸及2，4-D均能促进花粉萌发和花粉管生长，而超过一定浓度时却起抑制作用，最适宜于花粉萌发和花粉管生长的赤霉素浓度为50～300mg/L，三十烷醇为3～100mg/L，吲哚乙酸为5～25mg/L，2，4-D为5～10mg/L。

The testis index, testis volumes were same as the annual changes of testis mass. The curves of annual variation were all unimodality.2 The spermatogenetic cycle of Myospalax cansus comprises seven stages with significant features: Stage I , from February to April, the testis were at the stage of spermatogonia proliferation. In this period, testis index and the number of spermatogonia began to rise. Other spermatogenic cells had not yet formed; Stage II to III, from March to April, primary spermatocyte meiosis period. The testis index was highest in this stage, and spermatogenic cells were in spermatocyte stage, the primary spermatocyte meiosis generated to secondary spermatocyte; Stage IV, from April to May, spermatocytes continued to split, germ cells appeared in seminiferous tubules; Stage V, in May, sperm formation, spermatids of seminiferous tubules were transformed to spermatozoa, a large number of sperms existed in the lumen; Stage VI, spermatozoa emission period, from May to June, testis index were a significant drop and mature spermatozoa excluded gradually; VII, the testicular activity ceased basically from July to September, November to January of the following year, the spermatogenic activity ceased completely. Therefore, Myospalax cansus are animals of seasonal reproduction, spermatogenesis cycle is discontinuous type.

睾丸系数、体积和重量的年周期变化规律一致，变化曲线呈现单峰型。2甘肃鼢鼠雄性生殖腺的年周期活动由7个特征明显的时期构成：Ⅰ期，2～3月份，精原细胞增殖期，睾丸系数开始上升，精原细胞进行有丝分裂，其他生精细胞尚未形成；3～4月份为Ⅱ～Ⅲ期，初级精母细胞成熟分裂期，睾丸系数达到最大，生精细胞大多处于精母细胞阶段，初级精母细胞减数分裂生成次级精母细胞；Ⅳ期，4～5月份精母细胞继续进行分裂，精细胞在生精小管内出现；Ⅴ期，5月份，精子形成期，曲细精管中精细胞变态成精子，在管腔中存在大量的精子；Ⅵ期，精子排放期，5～6月份，睾丸系数显著下降，成熟精子从生精小管上脱离，逐渐排除；Ⅶ期，精原细胞停滞期，7～9月份睾丸生精活动基本停滞，11～翌年1月，生精活动完全停止。

Spindled zones blended imperceptibly into areas showing epithelial differentiation, in the form of glomeruloid glandular structures, sertoli-like tubules, and small glands, lined by cuboidal to columnar cells.

梭形细胞区与上皮样分化区互相掺杂，立方状或柱状瘤细胞排列成肾小球样腺管结构、支持细胞样小管结构和小腺管结构。

Adding purified stylar S-RNase from Prunus mume cultivar 'Gessekai' to liquid medium, for cultivating self- and cross-pollen at temperatures lot, 25℃ and 35℃, respectively, then determining the rate of pollen germination and the length of pollen tube after different periods of cultivating time.

在液体培养基中添加从果梅'月世界'花柱中纯化的S-RNase，并分别于10℃、25℃和35℃条件下培养自花、异花花粉，测定不同培养时间后的花粉萌发率和花粉管生长长度；离体条件下进行果梅花柱S-RNase降解花粉管RNA反应后，用琼脂糖凝胶电泳检测不同温度条件下自花、异花花粉管RNA被降解的程度。

Specific recognition and degradation of stylar S-RNase for self-pollen tube RNA, resulted in the stop of self-tube growth in Prunus mume. The recognition specificity of stylar S-RNase for the RNA weakened with the rise of temperature, consequently regulating the self-incompatibility reaction in Prunus mume.

果梅花柱S-RNase特异性识别并降解自花花粉管RNA，导致自花花粉管停止生长；随着温度的升高花柱S-RNase对花粉管RNA的识别特异性减弱，从而调节果梅的自交不亲和性反应。

Study on Crystalline and Properties of N',N-Bis-3,4,9,10-Perylene Tetracarboxylic Diimide;2. The effects of the crystalline of the titania nanotube were studied by the means of TEM and XRD etc.

用不同TiO2作原料，在一般水热法和微波法条件下，制备TiO2纳米管，通过TEM、XRD等表征手段，研究了影响合成TiO2纳米管晶型的因素，提出了影响纳米管晶型结构的机理。

By getting the FFT angular feature parameters from outline image of tracheid,a lotof common angle of cell walls can be obtained.This method can be used to describing theshape of tracheid and reduced tracheid's feature model,which can't be achieved by traditionalobservation method.

通过管胞轮廓图的FFT角度特征参数提取，还原出大量样本数统计意义上的细胞壁角度，解决了管胞的形状描述问题，还原出管胞的形态模型，这也是传统的观察法无法做到的。

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。