中国箬竹属新分类群及新组合     

赵惠如  杨雅玲 《中国科学院研究生院学报》1985,23(6):460-465

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强夯法在块石回填土中的应用与效果     

蒋国忠  金泳 《丽水学院学报》2007,29(5):73-77

强夯法具有设备简单、施工方便、适用范围广、经济易行、有效缩短工期及加固效果显著等优点.通过某厂区采用强夯法处理回填土地基的工程实例,介绍了该方法在以块石为主要填料地基中的处理效果.  相似文献   

Complex pathologies of angiotensin II-induced abdominal aortic aneurysms     

Daugherty A  Cassis LA  Lu H 《Journal of Zhejiang University. Science. B》2011,12(8):624-628

Angiotensin II (AngII) is the primary bioactive peptide of the renin angiotensin system that plays a critical role in many cardiovascular diseases. Subcutaneous infusion of AngII into mice induces the development of abdominal aortic aneurysms (AAAs). Like human AAAs, AngII-induced AAA tissues exhibit progressive changes and considerable heterogeneity. This complex pathology provides an impediment to the quantification of aneurysmal tissue composition by biochemical and immunostaining techniques. Therefore, while the mouse model of AngII-induced AAAs provides a salutary approach to studying the mechanisms of the evolution of AAAs in humans, meaningful interpretation of mechanisms requires consideration of the heterogeneous nature of the diseased tissue.  相似文献   

基于知识可视化图谱的国内数字图书馆研究演进分析     

杨九龙  杜文龙 《图书馆学研究》2012,(5):5-9,39

文章选取中文社会科学引文索引CSSCI中研究主题为数字图书馆的文献群作为研究对象,运用CiteSpace II软件进行文献共引分析和热点分析,以知识可视化图谱方式展现了近十年图书情报学领域数字图书馆的研究机构、知识基础、研究热点及研究前沿。  相似文献   

苏联的“边缘化”与第二次世界大战的爆发     

王共晋 《淮阴师范学院学报(哲学社会科学版)》2001,23(4):469-473

苏联的出现引起民了西方资本主义大国的不安，基于意识形态和一战后世界和平的考虑，苏联排斥在巴黎和会之外，这种安排上使苏联处于欧洲的边缘。“边缘化”政策导致欧洲均势的破坏，在某种程度上，促成了二战的爆发。  相似文献   

Availability and toxicity of Fe(II) and Fe(III) in Caco-2 cells     

He WL  Feng Y  Li XL  Wei YY  Yang XE 《Journal of Zhejiang University. Science. B》2008,9(9):707-712

The objective of the present study was to compare the toxicity and availability of Fe(II) and Fe(III) to Caco-2 cells. Cellular damage was studied by measuring cell proliferation and lactate dehydrogenase (LDH) release. The activities of two major antioxidative enzymes [superoxide dismutase (SOD) and glutathione peroxidase (GPx)] and differentiation marker (alkaline phosphatase) were determined after the cells were exposed to different levels of iron salts. The cellular iron concentration was investigated to evaluate iron bioavailability. The results show that iron uptake of the cells treated with Fe(II) is significantly higher than that of the cells treated with Fe(III) (P<0.05). Fe(II) at a concentration >1.5 mmol/L was found to be more effective in reducing cellular viability than Fe(III). LDH release investigation suggests that Fe(II) can reduce stability of the cell membrane. The activities of SOD and GPx of the cells treated with Fe(II) were higher than those of the cells treated with Fe(III), although both of them increased with raising iron supply levels. The results indicate that both Fe(II) and Fe(III) could reduce the cellular antioxidase gene expression at high levels. Project supported by the International Cooperative Project from the Ministry of Science and Technology of China (No. 2006DFA31030), the Bureau of Science and Technology of Zhejiang Province (No. 2006C32019) and HarvestPlus-China (No. 8022), and the Program for Changjiang Scholars and Innovative Research Team in University of China (No. IRT0536)  相似文献   

基于ELM327的车载故障诊断系统开发     

黄晓东  王彪  黄晓华 《九江职业技术学院学报》2012,(3):14-15,20

随着第二代在线故障诊断（OBD II）标准在不同品牌汽车上的强制应用,针对普通用户如何很好地了解汽车运行状态和故障诊断的需求,系统开发采用ELM327芯片通过OBDⅡ读取汽车ECU的数据,在PC、PDA或Mobile上显示汽车运行状态和进行故障诊断,省去繁杂的通讯协议,为广大普通用户提供一种简单易用的通用汽车故障诊断系统。  相似文献   

试论二战后日本在领土处理问题上的态度与美国托管冲绳(一)     

安成日  李金波 《大连大学学报》2013,(1):76-82

对战败以后被停止行使国家主权的日本来说,尽快实现媾和结束占领,恢复行使国家主权,重返国际社会是战后初期最重要的外交课题。在这一过程中,如何以最小的代价,以对己最有利的方式实现媾和成为日本各界关注的焦点。然而,一般来说何时媾和,把何种问题纳入媾和议题等均由掌握媾和主导权的战胜国来决定。二战后美苏矛盾不断激化,东西冷战的乌云迅速蔓延东亚的形势下,掌握对日占领主导权的美国,为使日本尽快成为"东亚防共防波堤",高唱对日"宽大的媾和",致使日本置喙媾和问题的机会陡然增加。在东西冷战迅速蔓延的形势下,安全保障问题和与之相联系的日本周边岛屿的处置问题,成了日本能否谋求同盟国尽早实现媾和的关键。最终日本吉田茂政府接受美军继续驻扎日本本土;牺牲冲绳人民的利益,同意美国以联合国的名义托管琉球(冲绳),日本只保留"潜在主权(或‘残存主权’)"的有限恢复主权的方式实现了同西方阵营的"多数媾和"——即事实上的"片面媾和"。  相似文献   

George W. Bush's post-September 11 rhetoric of covenant renewal: upholding the faith of the greatest generation     

Denise M. Bostdorff 《Quarterly Journal of Speech》2013,99(4):293-319

The appeal of Bush's post-September 11 discourse lies in its similarities with the Puritan rhetoric of covenant renewal by which ministers brought second- and third-generation Puritans into the church. Through this epideictic discourse, Bush implored younger Americans to uphold the national covenant of their “elders,” the World War II generation, through support of the war on terrorism, and he revitalized the faith of the older generation. Bush's covenant renewal rhetoric in the context of September 11 inaugurated him into the presidency. It also explains his predilection for unilateral and/or pre-emptive action and his call for acts of local community service.  相似文献   

mtDNA analysis of the human remains buried in the sarcophagus of Federico II     

Alfredo Salerno  Giampietro Lago  Andrea Berti  Francesco Calì  Mario Mirisola  Patrizia Carta  Carmen Ferro  Valentino Romano   《Journal of Cultural Heritage》2005,6(4):313-319

The sarcophagus containing the remains of Federico II, located in the Cathedral of Palermo (Sicily, Italy), was opened on 1998 to perform a multidisciplinary survey [1]. Next to the remains of Federico II and in close contact with them were laying two other skeletons belonging, according to historical records, to Pietro II di Aragona and to an anonymous person (“The Third Individual”), probably a woman. The bones appeared severely deteriorated. Chemical analysis performed on bone samples excluded that the bodies underwent some kind of embalming process. The analysis of mtDNA from bone samples taken from the three skeletons was successful in only one of the two labs involved. The HVR1-mtDNA sequence (region: from nt 16,035 to nt 16,395), obtained from the bone samples of Federico II and “The Third Individual” appear identical but bear double peaks at the same nucleotide positions, suggesting mixing (i.e. contamination) of different mtDNA types. The HVR1 sequence obtained from the bone sample of Pietro II di Aragona does not present double peaks and differ from the Cambridge Reference Sequence (CRS) at six nucleotide positions. Cloning experiment of the Federico II amplicon demonstrated that the mixed mtDNA types are only two: one identical to CRS, the other identical to the sequence of Pietro II di Aragona. A reconstruction of these data are proposed in the Discussion. Due to the problematic context in which this study was carried out (mixed and deteriorated biological material, failure to replicate results in two different labs), our results and reconstruction can only be offered on a tentative basis. It is hoped that the data presented in this study will reveal useful, for future comparison, if further molecular genetics research will be carried out on the royal dynasties that ruled Sicily in the early centuries of the past millennium.  相似文献