丹参脂溶性有效成分丹参酮研究进展

为了获得高纯度、高品质的丹参酮,使其更好地发挥药理活性,在查阅国内外近10年有关丹参酮研究文献的基础上,对其提取纯化、合成制备、药理作用等研究成果进行系统综述.结果显示,应用现代技术手段提取纯化得到的丹参酮纯度较高、品质较好,且易于操作,条件容易控制,其中非离子表面活性剂辅助提取、超临界CO2萃取、超声提取、超高压辅助提取等是应用前景较广的经济、有效、绿色的提取方法.高效逆流色谱法是效果较好的纯化方法.目前丹参酮类物质的生物合成技术也取得了瞩目的成就.此外丹参药理活性的研究主要集中于抗肿瘤、天然抗氧化、抗菌消炎、治疗心脑血管疾病等方面,且取得了很好的临床效果.这些研究为丹参的全面开发利用提供了参考.     

Digitization characteristics of geothermal information and structural analysis of 2011 off the Pacific coast of Tohoku Ms9.0 earthquake

Earthquake is one of the difficult problems that can not be solved as of this writing since the time when modern science was initiated over 300 years ago, and irregular events cannot be dealt with by using quantities examples before and followed by a view of the number of analysis systems in modern science; meanwhile, it covers the problem that how to use changeable information. Structural analysis method is developed particularly for the study of evolutionary transitional processes of the changing events by employing irregular information, and emphasizes the primitiveness of changes in events. Based on the data of sounding observation every 08 o’clock and 20 o’clock per day from China Meteorological Administration, in this paper, we employ the digital structural analysis method to analyze the process of the special, structural characteristics of 2011 off the Pacific coast of Tohoku Ms9.0 earthquake. The result shows that the method can reflect the process of geothermal structures before and after earthquake; it can reflect the congruity between geothermal "heat level" and the level of earthquake energy. When the structure before the earthquake is "the counter clockwise rolling current and the unstable structures" with "dry in lower levels and wet in upper levels", we should be worry about the problem of earthquake. In a word, geothermal information could reveal that earthquakes really would be "heralded".     

精细油水煤浆在柴油机上燃烧过程计算分析

根据精细油水煤浆固液两相流体燃料的特征,分析了其对柴油机供给系统的影响,查找出了燃烧精细油水煤浆使偶件出现磨损和卡死现象的原因,并提出了解决问题的应对措施。再通过对发动机工作时气缸中热力过程的分析,研究并总结了精细油水煤浆在柴油机上的燃烧特性,给出了精细油水煤浆的燃烧过程的合理的微观解释;且通过计算精细油水煤浆在发动机中各个工作阶段的着火温度和热效率,说明了精细油水煤浆在柴油机上燃烧的可行性和经济性。     

一种用于MIMD平台的并行遗传／神经网络混合学习算法

本文提出了一种用于多层前馈神经网络训练的新算法，它把遗传算法与自适应变形梯度学习算法集成起来。这种并行混合学习算法已经在ＭＩＭＤ平台实现了。通过把该算法用于二个图像识别领域例子，对它的性能进行了评估，本文学显示了所 拼行混合神经网络学习算法的良好的收敛性。     

湖南沃溪金矿断裂构造动力成矿研究

文章重点探讨了断裂构造动力成矿的机制及模式,并以此为基础,全面分析了湖南沃溪金矿含金石英脉中金及SiO_2在断裂构造动力成矿作用下垂向和侧向上的积聚过程,指出断裂构造动力成矿作用与该矿床的形成演化有密切关系。     

同位素脉冲信号的处理

提出了简单实用而且快速的同位素脉冲信号处理电路。经该电路处理后的脉冲信号,能够准确、真实地反映人体各脏器对同位素的吸收程度,再经计算机处理并输出,即可根据此输出结果对病人进行诊断。     

李群上的亚同态

文章给出了李群上的亚同态的定义,并对李群上的亚同态的有关性质进行了研究,得出了一些有意义的结果.     

Analysis on electrical transport characteristic of 8-hydroquinoline aluminum film

The current-voltage and capacitance-voltage characteristic of the organic single-layered electroluminescent diode utilizing 8-hydroquinoline aluminum as active layer have been measured under bias ranging from −5 V to 28 V in this work. A simple model for charge transport process of 8-hydroquinoline aluminum layer is proposed to illuminate the conductivity characteristic of the diode.     

矿用集尘风机的物理模拟实验研究

本文根据相拟理论研制了矿用集尘风机的物理模型和掘进巷道的物理模型．并在该掘进巷道物理模型中进行三个方面的物理模拟实验研究．经过这三个方面的实验研知得出一些具有实际意义的结论．这些结论为矿用集尘凤机样机的合理设计，参数选择提供可靠依据．     

电梯速度优化研究及软件设计

本文介绍了电梯理想速度曲线的数学模糊，根据工程实际进行了曲线参数的优化，用Ｔｕｒｂｏ Ｃ语言编制计算程序成功地求取了电梯运行速度按距离控制所需的Ｖ＝ｆ（ｓ）曲线，仿真结果表明，各项技术指标均满足要求，为电梯速度的实时控制准备了必要的条件。