反应作用

OBJECTIVE To investigate the delayed responses after acute smoking, we observed leukocyte and nitric oxide in BAL fluid in guinea pigs; and to further investigate the inhibitory effect of low-dose pethidine against the delayed response.

目的 以支气管肺泡灌洗液中NO水平和白细胞为指标，观察豚鼠定量吸烟后肺、气道的迟发性反应；以及很低剂量的哌替啶对这些反应的抑制作用。

OBJECTIVE To investigate the delayed responses after acute smoking, we observed leukocyte and nitric oxide in BAL fluid in guinea pigs; and to further investigate the inhibitory effect of low-dose pethidine against the delayed response.

目的以支气管肺泡灌洗液中NO水平和白细胞为指标，观察豚鼠定量吸烟后肺、气道的迟发性反应；以及很低剂量的哌替啶对这些反应的抑制作用。

It seems likely that participation of the d orbitals on sulfur is responsible for the fairly high reactivity.

较高的反应活性表明在NCO自由基与SO〓以及CS〓分子的反应过程中，S原子外层电子的d轨道部分的参与可能起了重要作用。

In the first part, rhodium acetate catalyzed 1, 3-dipolar reactions of 1-diazo-2-oxo-propylphosphonates with nitriles was studied.

在催化量的醋酸铑作用下，1-重氮-2-羰基丙基膦酸酯与芳香腈顺利进行反应，而对脂肪腈的反应则很复杂，没有得到预期产物。

The results indicated that the repair efficiency was significantly decreasing in the presence of nickel, cadmium, copper, chromate, and zinc in a dose dependent manner.

为了进一步了解镍作用的目标为何，藉由在in vitro repair assay中加入镍，再分别和具有硫氢基（sulfhydryl group，-SH）的DTT反应，其修复反应有明显回升的情形。

Histologically, the seminiferous tubules contained numerous Sertoli cells and more Sertoli-spermatozoa complexes, accompanied by the depletion of Leydig cells with deeply stained nuclei. Mature spermatozoa were stored up in the epididymis, but only a few in the efferent ducts. In the second place was testicular atrophy（32/120; 26.7%）. The seminiferous tubules showed moderate to severe inactivity of spermiogenesis with evidence of only spermatogonia, spermatocytes and Sertoli cells. The Leydig cells were obviously decreased in numbers associated with decrease of lipid droplets in their cytoplasms. Testicular hypoplasia was the third disorders（22/120; 18.3%）. Only a few spermatogonia and Sertoli cells appeared without any spermiogenesis. The associated changes was decreased in Leydig cells and fibrous hyperplasia in the interstitium.Epididymal stones were sometimes found（12/120; 10%）. Grossly, yellowish-white nodules with various sizes and firm in consistency were observed in the epididymis and the front efferent ducts. Microscopically, the epididymal ducts were dilated with voluminous spermatozoa storage, even showed calcification in severe cases. The deposited calcium salts were stained positively by Von Kossa and Alizarin red methods.Amyloidosis was also detected in 10 roosters（8.3%）. Eosinophilic, homogeneous, amyloid-like substances were deposited mainly in the testicular interstitium and the periphery of blood vessels. These substances showed positive reaction by Congo red staining. Five roosters（4.2%）had Marek's lesions in the testis, epididymis and peripheral nerves with infiltration of pleomorphic lymphocytes. Only one case showed epithelial necrosis of seminiferous tubules accompanied by fibrous proliferation in the interstitium.

结果发现，在总共搜集的120个病例中，其中因年老所导致的产精力不佳为最多，占38例（31.7%），於镜下可见大量精虫黏附於Sertoli cell的表面，并可见Sertoli cell数量明显增多而Leydig cell明显减少，且其细胞核呈现浓染的现象，而在其副睪中仍可见到成熟精虫蓄留於管腔中，但在其输精管内却只有少量精虫存在；其次为睪丸萎缩，占32例（26.7%），镜下可见中度至重度无造精作用，其生精小管中只见到精母细胞、精原细胞及Sertoli cell存在，但Leydig cell数量明显减少且其细胞质内的脂质也明显减少；睪丸发育不全，占22例（18.3%），於生精小管内只见到精母细胞及少量Sertoli cell存在，不见造精细胞分化，於生精小管间质可见Leydig cell减少并伴随结缔组织增生；副睪结石，占12例（10%），肉眼下可在副睪及输精管前段见到黄白色大小不一的结节，触感坚硬，於镜下可见副睪管扩张并有大量成熟精虫蓄积，严重时可见钙化现象，以Von Kossa及茜素红染色均呈阳性反应；类淀粉沉著症，占10例（8.3%），镜下在睪丸间质及血管周围可见粉红均质样的物质沉积，以刚果红染色成阳性反应；马立克病，占5例（4.2%），镜下可在睪丸、副睪实质及周边神经内均可见到嗜碱性大小不一的淋巴样细胞浸润；睪丸坏死，占1例（0.8%），镜下可见生精小管上皮细胞坏死脱落及间质结缔组织增生。

In the exudates from wounds, IL-1 was detected. IL-1 is capable of promoting proliferation of fibroblasts and excretion of collagenase, which induces inflammation and fever and promote wound healing. Inflammation is a defense reaction of the body.

同时，在局部创伤渗出液中测出含有IL-1，而IL-1可促进纤维细胞增殖及促进分泌胶原酶，引起炎症和发热，促进创面愈合，而炎症反应被认为是机体的防御反应，因此MEBO具有抗感染、止痛、促进创面愈合和减轻瘢痕形成等作用。

The aim of this research is to understand the mechanism of resistance to powdery mildew in wheat and to analyze the role of reactive oxygen species in plant resistance based on the combination.

本研究从这两组合入手，探讨小麦抗白粉菌产生过敏性坏死反应的机理，解析活性氧物质在过敏性反应中所起的作用。

Firstly, optimal parameters of the passive coupling element such as damping and stiffness under different circumstances are determined and the influence o...

文章首先导出了在平稳白噪声激励下被动耗能单元优化刚度和优化阻尼的一般表达式，并分析了不同结构参数对控制效果的影响；比较了在不同的平稳过滤白噪声激励下主-从结构相对位移反应的均方根值；最后给出了在EI- Centro1 940 NS地震波作用下主-从结构相对位移和绝对加速度反应的峰值。数值结果表明了这种被动优化控制方法的有效性

Second,we set the database of morphological characteristics of intercepted and captured bark beetle during quarantine,and the last,we studied the molecular identification of 15 species.The results were showed as below.1.Application of bark beetle semiochemicals in timber quarantine1.1 EAG and walking responses of bark beetle to different semiochemicalsSemiochemicals which can induce the olfactory response and aggregation behavior of bark beetle include host volatile components,pheromones secreted by bark beetles itself or synthesized with host compounds by bark beetles,and the compounds released by tissue of decaying wood under the pressure of microorganism after bark beetle colonization.

信息化合物在小蠹虫检疫中的应用1.1小蠹虫对各种信息化合物的触角电位及嗅觉反应能诱发小蠹虫产生嗅觉反应，进而使之产生聚集行为的信息化合物有很多种，主要包括：树木的挥发性组分；小蠹虫自身产生的信息素和寄生后转化寄主化学物质合成的信息素统称虫体信息素以及树木被小蠹虫寄生后，其组织在微生物作用下释放的物质。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。