三种湿地植物抗寒性的初步研究

在阶段性降温条件下,研究了三种常用湿地植物黄鸢尾(Iris pseudacorus L.)、花菖蒲(Iris ensata Thunb.)及水芹(Oenabthe javanica)叶片抗寒性相关生理指标(可溶性蛋白质含量、可溶性糖含量、游离脯氨酸含量、丙二醛含量、超氧化物歧化酶活性、过氧化物酶活性、过氧化氢酶活性以及细胞质膜相对透性)的变化。结果表明,冷锻炼使湿地植物通过对抗氧化酶活性及渗透性的调节来提高其机体的抗寒性。低温条件下,黄鸢尾的抗氧化酶活性显著增加,5℃时SOD活性是初始值的5.77倍;花菖蒲保持较高的CAT活性,5℃时其CAT活性是黄鸢尾CAT活性的8.95倍,是水芹CAT活性的3.77倍;水芹叶片中脯氨酸含量明显提高,温度和脯氨酸含量呈负相关(R=-0.755,P=0.050)。综合比较各项生理指标可以得到这三种湿地植物的耐寒性大小顺序依次为:黄鸢尾>花菖蒲>水芹

Propagated error analysis of digital elevation models generated by bi-cubic hermite interpolation methods

2013-2014 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Long-term variations of the large-scale energy-water balance on land at high latitudes - Analysis using a wetness index -

第4回極域科学シンポジウム横断セッション：[IA] 「急変する北極気候システム及びその全球的な影響の総合的解明」―GRENE北極気候変動研究事業研究成果報告2013―11月12日（火） 国立極地研究所 ２階大会議

裸地面の熱収支・水収支の季節変化

Tohoku University課

A Research on the Construction Path of the Online Anti-corruption System of the Discipline Inspection and Supervision Organs of Putian City

在网络信息时代，如何用好互联网开展反腐倡廉建设，是执政党建设面临的一个紧迫课题。十八大以来，中共中央高度重视运用互联网开展反腐败斗争，强化领导，多措并举，推动了网络反腐快速发展并取得明显成效。党中央在惩防体系2013至2017年工作规划中强调，“重点新闻网站要办好反腐倡廉专栏和专题。坚持正确舆论导向，完善反腐倡廉网络舆情信息工作机制”。在这种背景下，2013年以来，中央纪委监察部网站、客户端、微信公众号等相继开通，打造了“一网一端一微”的立体传播格局。全国纪检监察机关网络反腐系统建设从此进入了全面推进、高速发展、持续提升的新阶段，但同时也存在整体规划不到位、系统建设标准缺乏、法律法规缺位等问题...In the era of online information, how to make good use of the internet to anti-corruption construction is an urgent task for the ruling party. Since the 18th Party Congress, the CPC Central Committee has attached great importance to online anti-corruption network construction and achieved remarkable results. The Work Plan of Anti-corruption of the Central Committee of the Communist Party of China ...学位：公共管理硕士院系专业：公共事务学院_公共管理硕士学号：1512014115040

CuInS_2 Quantum Dot-Sensitized Solar Cells Fabricated via a Linker-Assisted Adsorption Approach

分别以Cu I和In AC3作为铜源和铟源,十二硫醇(ddT)作为硫源,采用直接加热法合成不同尺寸的Cu In S2(CIS)量子点.运用X射线衍射(Xrd),拉曼光谱(rAMAn),高分辨率透射电镜(HrTEM),紫外-可见(uVVIS)吸收光谱表征其相结构、形貌及光学性能.结果表明:制备的CIS量子点为黄铜矿结构,且随着时间的延长,量子点逐渐长大,吸收光谱的激子吸收峰逐渐红移,表现出量子尺寸效应.采用巯基乙酸为双功能耦联剂辅助吸附法制备CIS敏化的TI O2薄膜.通过衰减全反射红外光谱(ATr-fTIr)分析得出,巯基乙酸上的羧基与TI O2表面羟基连接,另一端上的巯基代替长链的ddT与CIS耦联,将CIS成功锚定在TI O2表面.该方法不仅操作简单,而且容易实现CIS在TI O2表面的吸附.太阳电池光电性能测试表明,粒径大小约为3.6 nM的CIS量子点表现出最优的吸附能力以及光电转换性能.进一步采用连续离子吸附层法对CIS敏化的TI O2薄膜进行Cd S包覆,光电转换性能大大提高,其效率达到2.83%,这主要源于Cd S的包覆钝化了CIS的表面缺陷,有效地降低了电子复合.Colloidal chalcopyrite CuInS2(CIS) quantum dots(QDs) were synthesized using copper(I) iodine(CuI) and indium(III) acetate(In Ac3) as metal cationic precursors, and dodecanethiol(DDT) as the sulfur source and solvent.The microstructure and optical properties of the prepared CIS QDs were characterized by X-ray diffraction(XRD), Raman spectroscopy, high-resolution transmission electron microscopy(HRTEM), and UVVis absorption spectroscopy.The results showed that the CIS consisted of chalcopyrite phase and exhibited Cu-Au ordering.With prolonged reaction time, the grain sizes of the QDs became larger and the absorption edges of the CIS QDs showed a red-shift owing to the size-induced quantum confinement effect.For the first time, DDT-capped CIS QDs with narrow size distribution were connected to the inner surface of mesoporous Ti O2 films via a thioglycolic acid(TGA)-assisted adsorption approach, which was simple and easy to carry out.The adsorption behaviors of both TGA and the CIS QDs on the Ti O2 films were detected by attenuated total reflectance Fourier transform infrared(ATR-FTIR) spectroscopy.The results indicated that TGA was adsorbed onto the surface of Ti O2 via COOH groups while the ―SH group was exposed outside, and replaced DDT at the surface of the CIS QDs, leading to the attachment between Ti O2 and CIS.It was revealed that the CIS QDs of ~3.6 nm in size exhibited the best light absorption capacity and photovoltaic performance.An over-coating of Cd S significantly improved the performance of the QDSSCs owing to decreased electron recombination, and a power conversion efficiency of ~2.83% was obtained.supportedbytheNationalNaturalScienceFoundationofChina(21073193;21273241;21376195); ProjectontheIntegrationofIndustry;EducationandResearchofGuangdongProvince;China(2012B091100476); ScienceandTechnologyResearchProjectofGuangzhou;China(2014J4100218)~

The Ultrastructural and Histochemical Study of Anther Development in Lycium barbarurn L.

应用电镜和细胞化学技术，分别对宁夏枸杞（LyciumbarbarurnL.）花药发育及营养物质积累特点，做了超微结构研究和组织化学分析。主要实验结果如下：1．细胞质等变化特点枸杞小孢子发生和雄配子体发育过程中,主要细胞器发生了2次”细胞质改组”现象。第一次在小孢子母细胞减数分裂的前期Ⅰ--末期Ⅱ，核糖体数量减少,线粒体结构简化，到末期Ⅱ以后，核糖体数量增加,线粒体结构逐渐恢复；第二次在小孢子液泡化以后,核糖体和线粒体数量减少，质体肿胀,到二胞花粉早期,这些细胞器再度渐渐恢复正常。这些现象表明,在枸杞小孢子的发生、发育过程中都存在着“细胞质改组”现象，并且两次“细胞质改组”幅度有所不同。减数分裂...The ultrustructural featers of anther of Lycium barbarurn L. wasstudied using transmission electron microscope technique duringmicrosporogenesis and the development of male gametophyte. Thecharacteristic of distribution of nutriment during the development ofanther was also studied using cytochemistry technique. The results asfollowing:1. The characteristic of cytoplasm changeDuring the microsporog...学位：理学硕士院系专业：生命科学学院生物学系_发育生物学学号：20032605