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Selenium and Cardiovascular Diseases-An Update

1000年

作者： organized by Finnish Group of IABSE Finnish Association of Civil Engineers RIL and helsinki University of Technology.

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Biomedical and Environmental Sciences 1997年第2期10卷 220-226页

作者： JUSSI K. HUTTUNEN (National Public Health Institute, Mannerheimintie 166,FIN-00300 helsinki, Finland) National Public Health Institute Helsinki Finland.

Dietary deficiency of seleniurn has been incriminated in the etiology of cardiovascular diseases. Thus, cardiomyopathy associated with low selenium intake has been described in areas of exceptionally low selenium intake and in patients receiving total parenteral nutrition. Epidemiological studies have provided some evidence for the role of selenium deficiency in the etiology of atherosclerotic disease. An inverse association between the incidence of ischaemic heart disease and selenium intake has been described in population comparisons. The results of longitudinal studies within populations are conflicting. While some investigations have observed a relationship between low serum-selenium levels and the risk of coronary disease, others have not. Final evidence for the role of selenium in preventing atherosclerotic disease can be obtained only from controlled prevention trials

关键词： Selenium and Cardiovascular Diseases-An Update CVB

A DISCUSSION ON THE RELATIONSHIP BETWEEN THE IMPACT TOUGHNESS AND THE FRACTURE TOUGHNESS

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Chinese Journal of Aeronautics 1991年第4期6卷 386-392页

作者： Xu Chang-gan Beijing University of Aeronautics and Astronautics Yu Gang helsinki University of Technology, Finland

The impact value (AK) measured with classic impact experiment of mechanical properties is a normal index from the five important basic mechanical properties for engineering, but it still has no definite physical meaning. By use of the advanced impact experimental machine, the load-deflection signals under impact loading have been measured. According to the load-deflection curve of 30CrMnSiA steel obtained by this method, the AK value could be divided into the elastic deformation work, the plastic deformation work, the crack forming work, the work of crack propagation and the work of unstable crack propagation. Therefore, we can obtain the expression for the continuous changing of stress and strain under impact load. In this experiment, specimens with three different breaches, U type, V type and linear grooving, are used and the dynamic fracture toughness value (KDIC) of 30CrMnSiA steel is treated and calculated which follows the measuring method of material static fracture toughness, as ASTM E399. The experimental results verify that these impact specimens with three different breaches are satisfactory for plane strain relation under impact load. For high strength 30CrMnSiA steel, the maximum load of load-deflection curve under impact load can represent the unstable propagation load of crack. The precision of the calculated fracture toughness (KDIC) meets the engineering requirement of materials.

关键词： STP work ASTM A DISCUSSION ON THE RELATIONSHIP BETWEEN THE IMPACT TOUGHNESS AND THE FRACTURE TOUGHNESS

Metal pollution in relation to mass outbreaks of Dendrolimus punctatus Walker on Pinus massoniana *** China

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Journal of Environmental Sciences 1999年第4期11卷 498-503页

作者： Pekka Nuorteva\+1, LI Tian\|sheng\+2, Esa Tulisalo\+3, HONG Pei\|zhi\+4 (1.Department of Limnology and Environmental Protection, helsinki University, Caloniuksenkatu 6 C 64, FIN\|00100, helsinki University, Finland 2.Research Institute of Forest Ecolo helsinki University 芬兰中国林业科学院森林生态环境与保护所北京贵阳森林防治站贵州贵阳

Insects with their ecological superpower have enormous capacity to transform small pollution damage in forests to full scale calamities. Acid rain resulting from extensive coal burning is the chief pollutant in China. Acid rain activates from soil deposits toxic metals, which are transferred to trees and further to insects eating them. We studied the levels of the toxic Cd, its antagonists Zn and Cu, and acid rain indicators Fe and Mn in the forest pest moth Dendrolimus punctatus Walker (Lepidoptera:Lasiocampidae) in variously polluted Pinus massoniana Lamb forests in China.\; The highest density of D. punctatus , as well as the highest Cd levels developed in the moderately polluted forests. Possibly Cd had there broken down the pest resistance of the pines. The paradoxical coexistence of high Cd level and elevated population density of the pest seems to result from the high accumulation of Cd in its ichneumonid parasitoid. In the most heavily polluted forests the Cd level in needles was low, possibly because the strong acid rain had washed away most of the Cd deposit in the soil. It existed there no *** population. Absence of pest insects from the most heavily polluted areas is a common phenomenon.

关键词： metal pollution Dendrolimus punctatus Walker Pinus massoniana Lamb. China

用眼动电图(EOG)和角膜反射装置(CRT)两法记录到的眼动资料的差异

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心理科学进展 1984年第3期 70-72页

作者： Jounilehtela helsinki Finland 于国丰

(一)前言在人机系统中,操纵者和机械之间的一个重要联系是视觉信息的传递。人机系统可以是开放的,如在监视任务中,这时信息仍处在视觉子系统中,仅有的运动动作是眼球运动。在视野方面,眼睛可从接收10亿比特/秒的信息,而神经每秒只能传... 详细信息

(一)前言在人机系统中,操纵者和机械之间的一个重要联系是视觉信息的传递。人机系统可以是开放的,如在监视任务中,这时信息仍处在视觉子系统中,仅有的运动动作是眼球运动。在视野方面,眼睛可从接收10亿比特/秒的信息,而神经每秒只能传递几百万比特。至于中枢神经系统每秒仅可处理几十比特的信息(1970年Mc Cormic)。由于直接监视相关的大脑区域尚不可能,因此,只能从眼球运动记录中研究所寻求的信息有多少,所寻求

关键词：角膜反射法比特扫视运动探视运动眼动电图 EOG 注视点差异装置 CRT

用毛细管区带电泳技术测定杜仲叶中氯原酸含量的研究

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分析测试学报 1996年第3期15卷 66-68页

作者：张凤云毛富春西北林学院中心实验室

用毛细管区带电泳技术测定杜仲叶中氯原酸含量，方法的相对迁移率为１．４０，回收率在９９．７４％～１０２．０％之间，５次测定的变异系数为０．４５％，满足分析要求，为杜仲叶提取液中氯原酸的测定提供了样品用量少、分析时间短、... 详细信息

用毛细管区带电泳技术测定杜仲叶中氯原酸含量，方法的相对迁移率为１．４０，回收率在９９．７４％～１０２．０％之间，５次测定的变异系数为０．４５％，满足分析要求，为杜仲叶提取液中氯原酸的测定提供了样品用量少、分析时间短、运行成本低的最新分析方法。

关键词：毛细管区带电泳氯原酸杜仲叶

Aggregation of Gold Nanoparticles grafted with Cumyl-PNIPAM-MPC

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Aggregation of Gold Nanoparticles grafted with Cumyl-PNIPAM-...

Inter-comparisons of thermodynamic sea-ice modeling results using various parameterizations of radiative flux

第四届全国高聚物分子表征学术讨论会

作者： Jing Ye, Fan Jin, Chengqing Wang, Jun Shan, Heikki Tenhu and Chi Wu Department of Chemistry, The Chinese University of Hong Kong,Shatin, NT,HongKong Laboratory of Polymer Chemistry, University of helsinki

＜正＞ The aggregation of small particles is a common physical phenomenon. For example, the formation of smoke, the growth of aerosol, the nucleation and growth of droplets, and the flocculation of colloidalparticles. It has been generally accepted that there exist two distinct and extreme regimes;namely, the diffusion-limited aggregation （DLA） and the reaction-limited aggregation （RLA）, which lead to different fractal structures. Such structures can probed by light scattering in terms of the structure factor S（q）, which is the Fourier transform of the density-density correlation function ＜ρ（0）ρ（r）＞. It is known that

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Acta Oceanologica Sinica 2006年第1期25卷 21-31页

作者： ZHANG Zhanhai CHENG Bin LAUNIAINEN Jouko WU Huiding LIU Yu State Oceanic Administration Key Laboratory for Polar Science Polar Research Institute of China Shanghai 200136 China Finnish Institute of Marine Research Helsinki Fin-00931 Finland National Marine Environment Forecast Center Beijing 100081 China

Radiative fluxes are of primary importance in the energy and mass balance of the sea-ice cover. Various parameterizations of the radiative fluxes are studied in a thermodynamic sea-ice model. Model outputs of the surface radiative and heat fluxes and mass balance are compared with observations. The contribution of short-wave radiation is limited to a long part of winter. Therefore, simple schemes are often sufficient. Errors in estimations of the short-wave radiation are due mainly to cloud effects and occasionally to multi-reflection between surface and ice crystals in the air. The long-wave radiation plays an important role in the ice surface heat and mass balance during most part of a winter. The effect of clouds on the accuracy of the simple radiative schemes is critical, which needs further attention. In general, the accuracy of an ice model depends on that of the radiative fluxes.

关键词： parameterizations of radiative fluxes energy balance at the surface of ice/snow thermodynamic sea-ice model Baltic Sea Bohai Sea

Strain Mesorhizobium ***035:A Stress-Tolerant Isolate from Glycyrrhiza glabra Displaying a Wide Host Range of Nodulation

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Pedosphere 2008年第1期18卷 102-112页

作者： WEI Ge-Hong YANG Xue-Ying ZHANG Zhi-Xin YANG Ya-Zhen K. LINDSROM Shaanxi Key Laboratory of Molecular Biology for Agriculture College of Life Science Northwest A＆F University Yangling Shaanxi 712100 （China） Department of Applied Chemistry and Microbiology Biocenter 1 Fin-0014 University of Helsinki （Finland）

Thirty-nine rhizobial isolates were isolated from the root nodules of Glycyrrhiza uralensis and Glyeyrrhiza glabra, growing in the arid and semiarid regions of northwestern China, to test their taxonomic position and stress tolerance and to select one promising putative inoeulant strain for further studies. On the basis of 113 physiological and biochemical characteristics, the isolates were clustered into three groups. One isolate CCNWGX035 was found to have high tolerance to NaC1, pH, and temperature. By sequencing the 16S rDNA, isolate CCNWGX035 was placed in genus Mesorhizobium. Nodulation tests demonstrated that the isolate not only formed nitrogen-fixing nodules on its original host plant Glyeyrrhiza glabra, but also on Sophora vieiifolia, Lotus cornieulatus, Trifolium repens, Melilotus suaveolens, and Sophora alopecuroides. On the basis of sequence analysis of the nodA gene, isolate CCNWGX035 was closely related to strains of the genus Mesorhizobium, exhibiting some novel characteristics of root nodule bacteria.

关键词： Glycyrrhiza host range Mesorhizobium nodA stress tolerance

弹性和弹塑性有限元分析在区域构造研究中的应用

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上海地质 1992年第4期 1-8,22页

作者：吕炳全孙继武同济大学海洋地质系赫尔辛基技术大学地质地理系

笔者在郯庐断裂带、苏北盆地和珠江口盆地等区,运用有限元平面应变—应力分析、计算出的应变—应力场基本符合该区地质情况,此方法用于区域构造研究中是可行的。我们在含油气盆地区开展这一研究,把地球物理资料转化为半定量的应变一应... 详细信息

笔者在郯庐断裂带、苏北盆地和珠江口盆地等区,运用有限元平面应变—应力分析、计算出的应变—应力场基本符合该区地质情况,此方法用于区域构造研究中是可行的。我们在含油气盆地区开展这一研究,把地球物理资料转化为半定量的应变一应力场分析,使地球物理资料再次开发和利用,对盆地的区域构造和含油气特征有进一步的认识。

关键词：弹性有限元分析区域构造