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排序方式: 共有121条查询结果,搜索用时 15 毫秒
61.
OKT_(10)POSITIVECELLSINPERIPHERALBLOODOFMULTIPLE MYELOMAANDMALIGNANTLYMPHOMAZhengChengyun;ChenKaijun;SkaoWenbin;(Departmentof?.. 相似文献
62.
目的探讨系统性红斑狼疮(SLE)患者外周血中Th1/Th2偏移现象。方法采用外周血单个核细胞(PBMC)培养和酶联免疫吸附试验(ELISA)检测37例SLE患者和17例健康人外周血单个核细胞(PBMC)培养上清液中IL-4I、L-10I、L-12和干扰素-γ(IFN-γ)水平。结果SLE患者的IL-10水平高于健康对照组(P<0.05);IL-12低于健康对照组(P<0.01);IL-4和IFN-γ与健康对照组相比无统计学意义(P>0.05)。结论SLE患者外周血Th1/Th2细胞平衡失调,IL-10升高,IL-12下降。 相似文献
63.
Yang Qingyu Xin Zhaoliang Gao Ligui Lü Jian Department of Neurosurgery Second Affiliated Hospital Xi′an Medical University Xi′an 《西安交通大学学报(英文版)》1999,(2)
Itiswellknownbyneurosurgistsandorthopediststhatbulbar-cervicaldorsalcompressionlesionscanberesectedviaposteriorapproaches,butitisdifficulttoresecttheventralcompressionlesions.Withtheimprovementofimage,microsurgicaltechniqueandinstruments,theresection… 相似文献
64.
高飞 《城市轨道交通研究》2016,(9)
上海轨道交通10号线是按照列车全自动无人驾驶模式设计的,系统高度集成、集中监控,运营要求按照"快速保障、精简高效"的理念。但10号线实现无人驾驶模式后,由于种种原因,其运营管理仍按照有人驾驶模式运作,未体现无人驾驶系统在诸多方面的优势。借鉴新加坡无人驾驶线路的运营模式,立足于10号线无人驾驶的实际情况,从运营保障专业化、服务标准化、管理规范化的运营要求出发,本着精简、高效、实用的原则,提出运营管理组织模式的优化策略,以期为无人驾驶模式的发展和完善提供科学依据。 相似文献
65.
Ülkü Alver ?ahin Burcu OnatBaktygul Stakeeva Tuba CeranP?nar Karim 《Transportation Research Part D: Transport and Environment》2012,17(1):48-53
In this study, PM10 concentrations, as well as the size distributions of Fe-containing and Cu-containing particles are measured in six subway stations in Istanbul. The average daily PM10 concentrations are found to vary considerably. They were also found to be significantly higher than the levels found at urban air quality stations. Further, the relative abundance of Fe-containing particles among the particles of size >2.1 μm collected in the metro stations is 3.5-8 times higher than in the in the Istanbul atmosphere. 相似文献
66.
“十五”期间,在铁路跨越式发展的形势下,全国地方铁路工作取得突出成绩,在地方铁路建设和满足铁路运输需求方面发挥了重要作用。按照铁路“十一五”发展规划的总体思路,地方铁路将加强行业管理力度,结合铁道部与各省、市、自治区签订的铁路建设纪要和地方铁路建设的需求,配合铁路干线的规划搞好地方铁路的规划和建设,促进区域经济的发展。2006年,地方铁路将转变发展观念,创新发展模式,提高发展质量,建立更适应地方铁路的建设模式和运营模式。 相似文献
67.
Changes in the shelf macrobenthic community over large temporal and spatial scales in the Bohai Sea, China 总被引:11,自引:0,他引:11
Over the past 20 years, the Bohai Sea has been subjected to a considerable human impact through over-fishing and pollution. Together with the influence of the Yellow River cut-off, the ecosystem experienced a dramatic change. In order to integrate available information to detect any change in macrobenthic community structure and diversity over space and time, data collected during the 1980s and the 1990s from 3 regions of the Bohai Sea (Laizhou Bay, 16 stations, 37–38°N, 119–120.5°E; central Bohai Sea, 25 stations, 38–39°N, 119–121°E; eastern Bohai Bay, 12 stations, 38–39°N, 118.5–119°E) were reanalyzed in a comparative way by means of a variety of statistical techniques. A considerable change in community structure between the 1980s and the 1990s and over the geographical regions at both the species and family level were revealed. After 10 years, there was a considerable increase in abundance of small polychaetes, bivalves and crustaceans but decreased number of echinoderms. Once abundant in Laizhou Bay in the 1980s, a large echinoderm Echinocardium cordatum and a small mussel Musculista senhousia almost disappeared from the surveying area in the 1990s. Coupled with the increased abundance was the increased species richness in general whereas evenness was getting lower in central Bohai Sea and Bohai Bay but increased in Laizhou Bay. K-dominance plot showed the same trend as evenness J′. After 10 years, the macrobenthic diversity in the Bohai Sea as a whole was slightly reduced and a diversity ranking of central Bohai Sea > Laizhou Bay > eastern Bohai Bay over space was also suggested. Sediment granulometry and organic content were the two major agents behind the observed changes. 相似文献
68.
69.
Secondary metabolites are low-molecularweight compounds produced widely within theplant kingdom. Plant alkaloids constitute thelargest group of natural products and indole alka-loids represent one of the most important groups ofplant-derived natural products. The terpenoid in-dole alkaloids (TIAs) are a large group of sec-ondary metabolites found in a limit number of plantspecies as periwinkle Catharanthus roseus. SeveralTIAs in C. roseus are exploited for their pharma-ceutical applications… 相似文献
70.
本文对10kV自闭线、贯通线应如何合理设置检修开关进行了探讨,建立了各种不同供电制式下检修开关的设置模式,可供电力设计人员参考。 相似文献