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Effect of ethanol on corrected intensity,i.e.the intensity corrected for the rate at which an analyte solutionenters ICP,of lines of 10 rare earth elements,Mg,Fe and Cd have been studied,Compared to the aqueous case,the introduction of an ethanol solution results in a decrease in corrected intensity.For all the ionic lines and theatomic lines of Cd,the corrected intensities decrease steadily with increasing ethanol concentration from 0 to95 vol%.while for the atomic lines of the other elements,the corrected intensities have minima at certainethanol concentration.For a given element,the higher the excitation energy of a line,the greater the decrease inthe corrected intensity with the introduction of ethanol,The depression of corrected intensity by ethanol islinearly related to excitation energy.The above results have been used for identifying the ionization states of 38lines of rare earth elements and estimating their excitation energies.

提高白光发光二极管（light-emittingdiode，LED）的发光效率、显色指数和获得全相关色温系列，是将其用作新一代照明光源的重要研究方向；目前，实现白光LED的主流技术是采用发蓝光的LED芯片配合可被蓝光激发而发黄光的荧光粉；提高荧光粉的相对发光强度、调整发射光谱中发射峰值位置和增宽发射峰的半高宽（fullwidthathalfmaximum，FWHM），则是研究的关键之一。 碱土金属硅酸盐荧光粉中的(Sr，Li)3SiO5:Ce3+，已证实具有一定的应用潜力。本研究首次采用非均相沉淀法，外加Al3+置换Si4+作为Ce3+置换Sr2+的电荷补偿剂，制备了名义组成为Sr3-xSi. ; The important issues of promoting white light emitting diode (LED) use as the new generation of lighting are improving the luminous efficiency, color rendering index and obtaining full correlated color temperature series. At present, the most popular technology of white LED is a blue LED chip combines with a yellow phosphor than can be excited by the former blue light. So it is one of the key work. ; 学位：工学硕士 ; 院系专业：材料学院材料科学与工程系_材料学 ; 学号：20720091150046

无线传感器网络是众多的传感器节点通过无线通信的方式，相互联系，处理、传递信息的网络。在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 能源问题是无线传感器网络中一个主要的挑战，使电池供电的传感节点达到最大的生存时间来支持数据的采集与传输是当今的研究热点之一。本文从传感器节点的能量来源——电池本身出发，对电池容量以及影响电池容量的各种因素进行了分析，给出了适合本文研究的电池模型公式。并根据电池放电特性，在HEED算法的基础上进行研究，设计了一种电池感知的路由协议BAR-HEED，该算法主要是在组网过程和簇首轮换过程中，结合考虑了节点的电池放电损. ; Wireless sensor network is a kind of network through which the multitudinous sensors relates mutually, process and transmit information. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of hazardous area field, etc. So, it has a wide application future. The problem of energy sources is always one of the mainly challenges . ; 学位：工学硕士 ; 院系专业：信息科学与技术学院通信工程系_通信与信息系统 ; 学号：23320081153290

应用GR-3500型氧弹式热值仪测定了福建省东山县赤山林场木麻黄林、厚荚相思林和湿地松林的能量现存量,结果表明:木麻黄林现存生物量为156.82 t/hm2,各组分热值(总能量与总生物量的比值)处于19.84~21.70 kJ/g,整个林分平均热值为20.26 kJ/g,能量现存量为3 177.95 GJ/hm2,干的能量最大占总量38.09%,果的能量最小占总量0.77%;厚荚相思林现存生物量为149.51 t/hm2,各组分干重热值为19.98~23.48 kJ/g,整个林分平均热值为20.59 kJ/g,能量现存量3 079.16 GJ/hm2,干的能量最大占总量57.67%,果的能量最小占总量3.06%;湿地松林现存生物量142.22 t/hm2,各组分干重热值处于20.53~21.54 kJ/g,整个林分平均热值为21.00 kJ/g,能量现存量为2 986.28 GJ/hm2,其中干的能量最大占总量35.08%,枯枝的最小。3树种林分具有较高的现存生物量、能量现存量、各组分热值和整体平均热值,体现出较高的太阳能利用率。可见从热值与生物量的角度看,木麻黄、厚荚相思和湿地松是海岸沙地造林的良好树种。 ; By burning samples in a GR-3500 Oxygen Bomb Calorimeter,the caloric values of plant samples were tested and then calculated the total amounts of energy of Casuarina equisetifolia plantation,Pinus elliottii plantation and Acasia crassicarpa plantation at Chishan forestry centre in Dong shan county Fujian province.The results were showed as follows: The standing biomass and energy were 156.82 t/hm2 and 3 177.95 GJ/hm2 in C.equisetifolia plantation,and the gross caloric values were between 19.84 kJ/g and 21.70 kJ/g,with total average 20.26 kJ/g(The ratio of total energy to total biomass).The energy distribution among components were: trunk occupied 38.09% of total,the largest ratio of components,while fruit on the other hand,was 0.77%;While in the A.crassicarpa plant,the standing biomass and energy were 149.51 t/hm2 and 3 079.16 GJ/hm2,respectively.The caloric were from 19.98 kJ/g to 23.48 kJ/g with total average 20.59 kJ/g.The components energy structure were as follows: Truck occupied 57.67% of total,while dead branch only 3.06% in the other side.In the P.elliottii plantation,standing biomass was 142.22 t/hm2.Caloricvalue of components range from 20.53 kJ/g to 21.54 kJ/g,with total average 21.00 kJ/g.While standing energy was 2 986.28 GJ/hm2.From all the above,three species of plantation with higher standing biomass,standing energy,high caloric values of components and total average values,showed that they had higher ratio of solar energy utilization.So C.equisetifolia,A.crassicarpa and P.elliottii were very suitable species to coastal sandy cultivation. ; 国家“十五”科技攻关项目(2002BA516A16-15)

"适应"与"减缓"已经成为全球应对气候变化的两大战略,倡导公众行动对前者尤为关键。本文基于对新浪微博的内容分析与框架分析发现,气候变化主题微博以"减缓"为主导框架实施公众倡导,"适应"框架处在话语秩序的边缘,而作为重要信源的主流媒体同样忽视"适应"战略。作为低度风险感知的表现,网民以冷漠、悲观、宿命论,甚至批判性与偏离性话语来回应微博倡导。本文借助吉姆·维特的"延伸的平行处理模式",探讨了网民感知气候变化风险的心理机制,并从激发公众的应对效能与自我效能出发,对气候变化的风险传播治理提出建议、 ; "Adaptation" and "mitigation" have been accepted as key strategies for the global response to climate change,and the advocacy for public actions is especially crucial for the former.Based on content analysis and framing analysis,this study finds out that the mitigation strategy,rather than the adaptation strategy,dominates the framing of climate change at Sina microblogs.The mass media,as the major source of micro-blogs,also neglects the adaptation strategy.As a result of low risk perception,Netizens react to the advocacy of micro-blogs with apathy,pessimism,fatalism and even critical and deviate discourses.By virtue of Jim Witte's "Extended Parallel Process Model",the study explores the psychological mechanism and influence factors underlying public risk perception of climate change.Finally,it proposes the suggestions for the governance of risk communication in the realm of climate change from the perspective of inspiring response efficacy and self-efficacy of the public. ; 教育部人文社会科学研究规划基金课题“环境风险社会放大的传播机制及其治理研究”(15YJA860012)的研究成果~

近年来，为了实现经济与环境的可持续发展，开发新能源已经成为必然的趋势。生物柴油是一种理想的可再生能源，具有良好的燃烧性能以及高闪点，并且生物柴油是无毒的，排放的废气中硫氧化物和CO2的含量相对较少。 作为生物柴油的潜在原料，微藻以其生长周期短、油脂含量高等突出的优点进入了科学家的视野，并且，微藻作为地球上最主要的初级生产者，它具有高效的CO2固定能力，可以减少大气中的CO2，特别是筛选得到一些能够耐高浓度CO2的能源微藻，吸收大部分的温室气体，同时促进能源微藻的生长并积累大量的油脂。另一方面，由于常规的微藻培养方法需要投加大量含氮、磷无机盐类，导致微藻的生产存在着高成本的问题。将废水与产油微. ; Today, exploring renewable energy has become an inevitable trend to realize sustainable economic and environmental development. Biodiesel is ideal renewable energy that has efficient fuel performance and high flash point, but is non-toxic, with less emission of CO2 or sulfur oxides. Microalgae have got more and more attention as one of the best potential feedstocks for biodiesel production due to. ; 学位：理学硕士 ; 院系专业：生命科学学院_水生生物学 ; 学号：21620111152448

研究了乙醇在碱性介质（１．０ｍｏｌ·Ｌ－１ＮａＯＨ）中电沉积制备的Ｐｄ／ＧＣ、Ｐｔ／ＧＣ和Ｐｄ．Ｐｔ／ＧＣ电极上的电催化氧化．实验结果表明：由此法制备的钯铂系列合金电极对乙醇的电催化氧化表现出明显的协同效应─—乙醇在含把原子分数ｙｐｂ＝０．３３６的Ｐｄ－Ｐｔ／ＧＣ合金电极上的阳极交换电流密度是其在纯铂电极上的３０多倍． ; The electrocatalytic oxidation of ethanol on Pd/GC, Pt/GC and Pd-Pt/GC alloy electrodes prepared by electrodeposition was studied in alkaline medium (1. 0 mol' L-1 NaOH). The experimental results show that a synergism was observed on Pd-Pt/GC alloy electrodes for the electrocatalytic oxidation of ethanol-- ypd =0. 336 Pd-Pt/GC alloy electrode demonstrates the highest activity, the corresponding exchange current density is more than 30 times greater than that on Pure Pt/GC electrode.

提出了無線傳感器網絡上的一種查詢——極值區域查詢(peak region query,簡稱PRQ),即用戶指定查詢區域的大小和形狀,例如半徑為R的圓形區域,然后需要查詢傳感器網絡中的某個區域,使得區域內傳感器節點數據的某種聚集值最大.定義了極值區域查詢的概念,并提出一種集中式算法以求解查詢結果.由于傳感器節點的能量有限,為了降低查詢處理過程中的能耗,提出了分布式算法EXQ(an algorithm for extreme value query processing).與集中式算法相比,EXQ不但顯著降低了能耗,而且使得每個傳感器的能耗更加平均,從而延長了網絡的使用壽命.EXQ的基本思想是,將整個網絡劃分為若干相互重疊的子區域,對每個子區域通過本地數據聚集得到一個本地結果,然后對這些結果再進行全局數據聚集從而得到查詢結果.從理論和實驗兩方面分析和比較了集中式算法和EXQ的能耗和節點負載分布. This paper proposes a query in wireless sensor networks: Peak Region Query (PRQ). Given the shape and size of the query region, i.e., a disk region with radius R, peak region query finds out a region with this shape in the network field, in which the aggregation value of the data of the sensors can be maximized. This paper first gives the definition of PRQ, and then proposes a centralized algorithm for the problem. Because the sensors have limited energy, a distributed approach EXQ (an algorithm for extreme value query processing) is proposed, which not only reduces the energy cost but also balances the workload of the sensors, so as to prolong the lifetime of the network. The basic idea is to divide the network field into overlapped sub-regions, compute a local result for each sub-region and aggregate these results to obtain the query answer. The paper compares the energy efficiency and load balance between EXQ and the centralized approach analytically and experimentally. © by Institute of Software, the Chinese Academy of Sciences. All rights reserved.

随着化石燃料的日益减少,寻找可再生的液体生物质燃料已经引起了越来越广泛的关注。由生物质制备得到的25,-二甲基呋喃(dMf)具有高能量密度、高沸点、高辛烷值和不溶于水等优点,近年来被认为是一种非常有前景的液体燃料。本文归纳和总结了生物质转化为dMf的化学途径、方法和反应机理以及dMf的燃烧性能,并对今后的研究方向进行了展望。 ; With the decrease of fossil fuel reserves,looking for renewable liquid fuels from biomass have attracted increasingly interest.2,5-Dimethylfuran(DMF) from renewable biomass with special advantages of high energy density,high boiling point,high octane number,and immiscible with water has been considered as a kind of promising liquid fuel.In this paper,the chemical pathways,the production methods,the reaction mechanisms and the combustion performance of DMF from biomass are mainly summarized,and the future research trends are prospected. ; 国家重点基础研究发展计划(973)项目(No.2010CB732201);国家自然科学基金项目(No.50776035);中央高校基本业务费专项资金项目(No.2010121077)资助

漠斑牙鲆（Paralichthyslethostigma）原产于美国，具有生长快、品质优、适应性广、抗逆能力强等特点，在国际市场上倍受消费者的青睐，具有极高的市场价值和推广价值，该品种的引进为我国鱼类养殖又增添了一个新的优良品种。本研究采用群体实验的方法，探讨了摄食水平、温度和盐度等生态因子对漠斑牙鲆稚鱼和幼鱼的特定生长率、生化组成和能值的影响，以期丰富鱼类生物能量学的研究内容，为养殖生产提供基础资料。研究结果显示：1．漠斑牙鲆稚、幼鱼湿重特定生长率(SGRW)与摄食水平间的关系均可用直线和抛物线方程表示,但以抛物线方程表述更为合适。其湿重特定生长率随着摄食水平增加而增加,但当摄食水平增加超过. ; Paralichthys lethostigma originally grows in the America, and the fish is equipped with the following advantages of growing quickly, resisting strongly and having tasty meat. It is very favored in the international market, and has been a new eminent seed in China since being introduced. Using the population biological methods, the effect of some ecological factors (dietary levels, temperature, sal. ; 学位：理学硕士 ; 院系专业：生命科学学院生物学系_动物学 ; 学号：X200326005