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排序方式: 共有116条查询结果,搜索用时 31 毫秒
111.
应用免疫组化技术对62例胃肠癌的MG_7,抗原表达和局部免疫应答状态进行了分析。结果发现:MG_7抗原的检出率在胃癌为80.77%(21/26例),结直肠癌为94.44%(34/36例),淋巴结转移癌为93.33%(14/15例)。除2例癌旁非典型增生粘膜上皮呈弱阳性外,其余正常。良性病变粘膜上皮均为阴性。而且MG_7抗原表达强度与肿瘤恶性程度呈正相关,与局部浸润单个核细胞亚群(MNC_s)的密度有一定相关。提示瘤细胞的MG_7抗原可能参与了肿瘤的局部免疫应答。 相似文献
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113.
该文介绍了荆州护城河生物治理试验。针对荆州护城河水体已严重污染的状况,选择全河段中污染相对最为严重的一段水体作为试验段,采用KIC河道污水生物治理工艺进行治理。治理后该段水体水质各项指标达到建设部《再生水回用于景观水体的水质标准CJ/T95-2000》,治理效果理想。 相似文献
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Lei Xu 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2018,56(10):1552-1576
The randomness of track irregularities directly leads to the random vibration of the vehicle–track systems. To assess the dynamic performance of a railway system in more comprehensive and practical ways, a framework for probabilistic assessment of vehicle-curved track systems is developed by effectively integrating a vehicle–track coupled model (VTCM), a track irregularity probabilistic model (TIPM) with a probability density evolution method (PDEM). In VTCM, the railway vehicle and the curved track are coupled by the nonlinear wheel–rail interaction forces, and through TIPM, the ergodic properties of random track irregularities on amplitudes, wavelengths and probabilities can be properly considered in the dynamic calculations. Lastly, PDEM, a newly developed method for solving probabilistic transmissions between stochastic excitations and deterministic dynamic responses, is introduced to this probabilistic assessment model. Numerical examples validate the correctness and practicability of the proposed models. In this paper, the results of probabilistic assessment are presented to illustrate the dynamic behaviours of a high-speed railway vehicle subject to curved tracks with various radii, and to demonstrate the importance of considering the actual status of wheel–rail contacts and curve negotiation effects in vehicle-curved track interactions. 相似文献
116.
Industrial clusters which create competitive advantage are new trends in industry development. Establishing innovatory clusters in city suburbs which provide better environments for cluster development in return will greatly accelerate the development of suburbs. Thus there are reciprocal interactions between industrial clusters and city suburbs development. The relations and some suggestions about how to plan industrial clusters in suburbs were given. 相似文献