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科学家成功制成“纸电池” 成本低寿命长

今日电子 2010年第2期 23-23页

作者： christina d’airo

美国加州斯坦福大学的一个研究小组研究发现，科研人员将由银和碳纳米材料制成的特殊墨水，涂在纸张上，成功制成“纸电池”，为轻型、高效的新型能源存储带来希望之光。先前研究发现，用硅纳米线做成的电池是锂离子电池功效的10倍。本... 详细信息

美国加州斯坦福大学的一个研究小组研究发现，科研人员将由银和碳纳米材料制成的特殊墨水，涂在纸张上，成功制成“纸电池”，为轻型、高效的新型能源存储带来希望之光。先前研究发现，用硅纳米线做成的电池是锂离子电池功效的10倍。本次研究结果发表在美国《国家科学院院刊》上。

关键词：纸电池成本低科学家寿命美国加州硅纳米线斯坦福大学锂离子电池

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能攀爬火山的空间机器人

今日电子 2009年第4期 27-27页

作者： christina d' airo

一个由NASA喷气推进实验室的Issa ***领导的工程师团队，还包括加州理工学院的Joel Burdick教授和他的学生，设计和测试了一个能在陡峭斜坡和岩石表面进行导航的轻型探路者机器人原型。这个两轮圆柱形的机器人被命名为Axel，是Axel探路... 详细信息

一个由NASA喷气推进实验室的Issa ***领导的工程师团队，还包括加州理工学院的Joel Burdick教授和他的学生，设计和测试了一个能在陡峭斜坡和岩石表面进行导航的轻型探路者机器人原型。这个两轮圆柱形的机器人被命名为Axel，是Axel探路者系统中的一员。该系列是用来探测行星表面的。

关键词：空间机器人喷气推进实验室火山加州理工学院岩石表面 Issa NASA 工程师

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高效的光电单元使用了植物的治疗过程

今日电子 2010年第11期 21-21页

作者： christina d’airo

麻省理工的研究员正在研究一种模仿植物自愈过程的方法——植物通过将阳光转化为能量后就能自动再生它们的细胞。随着时间的推移，采集到的阳光会逐步降解成许多材质。不过，植物会经常破坏掉光线捕捉分子，重组以保证它们常新。

关键词：植物治疗单元光电光转化研究员细胞

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激光打印机对空气质量的影响研究新进展

今日电子 2009年第2期 25-25页

作者： christina d'airo

德国布伦瑞克大学夫朗和费WKI研究所（Fraunhofer Wilhelm Klauditz Institute）和澳大利亚布里斯班昆士兰大学的研究者经过合作研究，得出结论，他们认为激光打印机在工作时散发出来的超微细粒子并不是人们想象的炭粉颗粒，而是一些像... 详细信息

德国布伦瑞克大学夫朗和费WKI研究所（Fraunhofer Wilhelm Klauditz Institute）和澳大利亚布里斯班昆士兰大学的研究者经过合作研究，得出结论，他们认为激光打印机在工作时散发出来的超微细粒子并不是人们想象的炭粉颗粒，而是一些像石蜡、硅油这样的挥发性物质。“这些超微细粒子的一个关键特点是挥发性，这就表明它显然不是炭粉”，WKI材料分析与室内化学系的领导人Tunga Salthammer教授解释说。

关键词：激光打印机空气质量超微细粒子挥发性物质澳大利亚材料分析研究所昆士兰

FORECASTING EXCHANGE RATES: AN OPTIMAL APPROACH

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Journal of Systems Science & Complexity 2014年第1期27卷 21-28页

作者： BENEKI christina YARMOHAMMAdI Masoud School of Business and Economics Department of Business Administration Technological Educational Instituteof Ionian Islands 31100 Lefkada Greece. department of Statistics Payame Noor University 19395-4697 Tehran Islamic Republic of Iran.

This paper looks at forecasting daily exchange rates for the United Kingdom, European Union, and China. Here, the authors evaluate the forecasting performance of neural networks （NN）, vector singular spectrum analysis （VSSA）, and recurrent singular spectrum analysis （RSSA） for fore casting exchange rates in these countries. The authors find statistically significant evidence based on the RMSE, that both VSSA and RSSA models outperform NN at forecasting the highly unpredictable exchange rates for China. However, the authors find no evidence to suggest any difference between the forecasting accuracy of the three models for UK and EU exchange rates.

关键词： China European union exchange rates forecasting neural networks recurrent singularspectrum analysis United Kingdom vector singular spectrum analysis.

Electrochemical and spectroelectrochemical characterization of different mesoporous TiO2 film electrodes for the immobilization of Cytochrome c

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Frontiers of Materials Science 2018年第1期12卷 64-73页

作者： Stavros KATSIAOUNIS christina TIFLIdIS christina TSEKOURA Emmanuel TOPOGLIdIS department of Materials Science University of Patras Rion 26504 Greece

In this work three different mesoporous TiO2 film electrodes were prepared and used for the immobilization of Cytochrome c （Cyt-c）. Films prepared via a standard sol-gel route （SG-films） were compared with commercially available benchmark nanotitania materials, namely P25 degussa （P25-films） and dyesol nanopaste （dyesol films）. Their properties, film deposition characteristics and their abilities to adsorb protein molecules in a stable and functional way were examined. We investigated whether it is possible, rather than preparing TiO2 films using multistep, lengthy and not always reproducible sol-gel procedures, to use commercially available nanotitania materials and produce reproducible films faster that exhibit all the properties that make TiO2 films ideal for protein immobilization. Although these materials are formulated primarily for dye-sensitized solar cell applications, in this study we found out that protein immobilization is facile and remarkably stable on all of them. We also investigated their electrochemical properties by using cyclic voltammetry and spectroelectrochemistry and found out that not only direct reduction of Fe（III）-heme to Fe（II）-heme of immobilized Cyt-c was possible on all flms but that the adsorbed protein remained electroactive.

关键词： TiO2 films spectroelectrochemistry cyclic voltammetry Cytochrome c

Volatile and C-H-O isotopic compositions of giant Fe-Ti-V oxide deposits in the Panxi region and their implications for the sources of volatiles and the origin of Fe-Ti oxide ores

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Science China Earth Sciences 2012年第11期55卷 1782-1795页

作者： WANG christina Yan Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China

The Panzhihua,Hongge,and Baima Fe-Ti-V oxide deposits in the Panzhihua-Xichang(Panxi) region are hosted in large layered mafic-ultramafic *** layered intrusions intrude either the Neoproterozoic dengying Formation,composed mainly of limestone,or the Paleoproterozoic Hekou Formation,composed of meta-sedimentary-volcanic *** remains unclear if the wall rocks have been involved during the fractionation of magmas and have affected the sequence of crystallization of Fe-Ti *** and their C-H-O isotopic compositions of magnetite,apatite,clinopyroxene,and plagioclase of different types of ores from the three intrusions are analyzed using a technique of stepwise heating mass spectrometer to evaluate the role of wall rocks in the formation of Fe-Ti oxide *** released from magnetite are composed mainly of H 2 O and CO 2,whereas the other minerals are composed mainly of H 2 O,CO 2 and H *** 800-1200°C temperature interval,the average 13 C values of CO 2 of all the minerals from the three intrusions range from 7.7‰ to 13.5‰ and the average 18 O CO 2 values from 19.1‰ to 19.5‰,which are scattered in a mixed field with basalt and the two types of wall rocks as end-members,indicating that CO 2 from the wall rocks may have been involved in the magmas from which the three intrusions *** 400-800 C temperature interval,both 13 C values(13.7‰ to 17.9‰ on the average) and 18 O values(16.2‰ to 19.2‰ on the average) of CO 2 of all the minerals are lower than those for 800-1200 C temperature interval,and much closer to the values of the wall *** H 2 O released at the 400-800 C temperature interval has relatively low d values ranging from 90‰ to 115‰,also indicating the involvement of fluids from the wall *** average bulk contents of volatiles released from magnetite of the Hongge,Baima,and Panzhihua intrusions are 4891,2996,and 1568 mm 3 STP/g,respectively,much higher than those released from other minerals in total,which are 382

关键词： magnetite volatiles C-H-O isotope Fe-Ti-V oxide ore Panxi region