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韩晓英 《张家口职业技术学院学报》2005,18(1):28-30
英语中有些肯定形式的词、词组和句子,译成汉语时常需改成否定形式;有些否定形式的词、词组和句子译成汉语时,又常改译成肯定的形式. 相似文献
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素质教育是一种面向全体学生的教育,是一种促进学生全面发展的教育。它重视学生的创新精神和实践能力的培养。“以人为本”是素质教育的基本特征和根本属性。一切为了人,为了人的一切,为了一切人,是素质教育的至上目标和终极追求。 相似文献
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花汉兵 《实验室研究与探索》2007,26(5):59-60,82
新型MSP430系列单片机具有低电压、超低功耗、丰富的片内外设和方便高效的开发环境等特点,典型应用于捕捉模拟信号的传感系统。并具体介绍了一种基于MSP430F449单片机的数据采集实验设计方法。此设计方案已经得到应用。 相似文献
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在对1736种期刊研究和评估后发现,国内统一刊号中存在不统一和分类不确切现象,最后探讨并提出现在我国期刊分类管理几点建议。 相似文献
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档案界对档案定义一般采用“属+种差”的逻辑形式,因而揭示档案本质、确定档案属种就成为档案定义的根本问题。档案记忆理论认为,档案是记忆的物质形态。档案以自身历史选择的必然性和逻辑结构的客观优势,成为人类自觉建构的外脑记忆的典型形式。作为用来建构原始记忆的历史文件,档案在物质形态上表现为档案实体,在逻辑关系上表现为记录和再现两个维度。以档案实体为基点,沿时空维度,向后回溯是档案记录关系维度,在档案记录关系的另一端是档案记忆的历史事实,这是档案记忆的客体;向前表述是档案再现关系维度,在档案再现关系的另一端是档案客体加以证明的回忆事实,这是档案记忆的证体。在这种逻辑结构中,档案实体即档案本身是档案“二维”逻辑关系和档案“三重要素”的物质载体。档案现象的实质就是以“二维”逻辑关系,凝聚“三重要素”的实践过程。 相似文献
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Lipids changes in liver cancer 总被引:9,自引:1,他引:8
Liver is one of the most important organs in energy metabolism. Most plasma apolipoproteins and endogenous lipids and lipoproteins are synthesized in the liver. It depends on the integrity of liver cellular function, which ensures homeostasis of lipid and lipoprotein metabolism. When liver cancer occurs, these processes are impaired and the plasma lipid and lipoprotein patterns may be changed. Liver cancer is the fifth common malignant tumor worldwide, and is closely related to the infections of hepatitis B virus (HBV) and hepatitis C virus (HCV). HBV and HCV infections are quite common in China and other Southeast Asian countries. In addition, liver cancer is often followed by a procession of chronic hepatitis or cirrhosis, so that hepatic function is damaged obviously on these bases, which may significantly influence lipid and lipoprotein metabolism in vivo. In this review we summarize the clinical significance of lipid and lipoprotein metabolism under liver cancer. 相似文献
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Novel distribution pattern of fibrinolytic components in rabbit tissues extract: a preliminary study
Lu XG Wu XG Xu XH Gong XB Zhou X Xu GB Zhu L Zhao XY 《Journal of Zhejiang University. Science. B》2007,8(8):570-574
Objective: The purpose of this work was to investigate the distribution pattern of fibrinolytic factors and their inhibitors in rabbit tissues. Methods: The components of the fibrinolytic system in extracts from a variety of rabbit tissues, including tissue plasminogen activator (tPA), plasminogen activator inhibitor-1 (PAI-1), plasminogen (Plg), plasmin (Pl) and α2 plasmin inhibitor (α2PI), were determined by colorimetric assay. Results: The tissue extracts in renal, small intestine, lung, brain and spleen demonstrated strong fibrinolytic function, in which high activity of tPA, Plg and Pl was manifested; whereas in skeletal muscle, tongue and stomach, higher activity of PAI-1 and α2PI showed obviously. Also excellent linear correlations were found between levels of tPA and PAI-1, Pl and α2PI, Plg and Pl. In related tissues, renal cortex and renal marrow showed distinctly higher activity of tPA and lower activity of PAI-1, with the levels of Plg and Pl in renal cortex being higher than those in renal marrow, where the α2PI level was higher than that in renal cortex. Similarly, the levels of tPA, Plg and Pl in small intestine were higher than those in large intestine, but with respect to PAI-1 and α2PI, the matter was reverse. In addition, the fibrinolytic activity in muscle tissue was lower, however, the levels of tPA, Plg, and Pl in cardiac muscle were obviously higher than those in skeletal muscles, and the levels of PAI-1 and α2PI were significantly lower than those in skeletal muscle. Conclusion: Our data demonstrate that a remarkable difference of the fibrinolytic patterns exists in rabbit tissues, which has probable profound significance in understanding the relationship between the function of haemostasis or thrombosis and the physiologic function in tissues. 相似文献