Study of certain ecological relationships between Kandelia candel vegetation and common macro-benthic fauna in Jiulongjiang Estuary

本文采用室内模拟实验和野外控制实验相结合的研究方法，研究秋茄红树林生态恢复过程对大型底栖动物分布和群落结构的影响、大型底栖动物对红树植物叶片的摄食偏好和摄食量，大型底栖动物对秋茄凋落物的去除作用，以及大型底栖动物在摄食红树凋落叶的过程中对红树林土壤的作用。主要研究内容及结果如下： 1.秋茄红树林人工恢复对大型底栖动物群落的影响 于2005年7月（夏季）、2005年10月（秋季）、2006年1月（冬季）和2006年4月（春季），选择福建九龙江口恢复背景相似，林龄分别为4（K4）、7（K7）、19（K19）和43年（K43）的人工秋茄（Kandeliacandel）林，以及两片光滩（NF1和N...1.Changes of macro-benthic faunal community with stand age of rehabilitated Kandelia candel mangrove in Jiulongjiang Estuary Distribution properties of macro-benthic faunal communities were compared among rehabilitated Kandelia candel forests of different ages in Jiulongjiang Estuary, China. From July 2005 to July 2006, seasonal surveys were conducted within four representative forests: K4, K7,...学位：理学博士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：2122005140319

Application of kaolin in the synthesis of Y zeolite and dimethyl ether

高岭土是一种以高岭石和埃洛石为主要成分的粘土类集合体矿物原料，应用范围涉及工业部门的许多领域，在催化中也有着广泛的应用。通过TEM、SEM、XRD和IR等表征手段，分析结果表明，龙岩高岭土产品主要成分为高岭石，埃洛石次之，不同种类的产品还有不同量的水云母、石英等。 高岭土在催化中最重要也是最普遍的应用是作为FCC（FluidCatalyticCracking）催化剂的原料。原位晶化合成的分子筛裂化催化剂因其优异的催化性能广泛应用于石油炼制领域。本文以龙岩高岭土为原料，采用原位晶化法合成用于FCC催化剂的Y型分子筛。通过高岭土原料的选择、高岭土微粒前处理温度的控制、初始投料比例和晶化时间的调节...Kaolin is a kind of mineral clay mainly composed of kaolinite and halloysite. Its application involves a lot of industrial areas. Catalysis industry is one of them. By use of TEM、SEM、XRD and IR, we found that the main component in Longyan Kaolin was kaolinite; halloysite took the second place. There were still some quartaz and hydromica in Longyan kaolin. One of the most important applications...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：20012507

The Research of Protein Classifications based on Ensemble Learning and multi-label Learning

随着大量生物学数据的增长，仅仅利用传统的生物学实验来测定蛋白质结构或其他性质的方法不仅需要耗费大量人力物力，其时间的耗费也是相当大。因此，如何建立自动学习的方法来预测蛋白质，从而大大降低生物实验的成本是一个非常有意义的研究课题。另一方面，随着机器学习技术的快速发展，其应用领域也得到了不断的扩宽，特别是在生物学领域的应用，面对大量的生物信息机器学习得到了充分的应用。 本文的主要内容包括以下几个方面： （1）引入了两种蛋白质特征提取方法。本文在蛋白质分类问题当中引入了两种有效的特征提取方法：一种为代表氨基酸组成成分即物理化学特性的混合特征，共计188维；另一种为代表蛋白质同源信息的基于位置特异...With the growth of overwhelming amount of biological data, using traditional biological experiments alone to determine protein structures and other properties not only requires a lot of manpower and resources, but also costs a lot of time. How to build “in silicon” methods for predicting proteins thus reduce the costs of biological experiments can be a meaningful topic. On the other hand, the rapi...学位：工学硕士院系专业：信息科学与技术学院_计算机应用技术学号：2302011115303

The Novel Control Strategy Research on Resonant Bridge Modular Switched-Capacitor Converter

在提出的一款谐振型桥式模块化多电平开关电容变换器拓扑基础上,提出了移相加PWM的控制策略。该控制策略实现了变换器高频开关(MOSFET)的零电流、零电压开关,并在保证变换器较高效率运行的基础上,实现了变换器输出电压的可调性,解决了回路峰值电流过大或过小的问题。详细分析了开关电容变换器高频开关移相角与输出电压和回路峰值电流之间的关系,并通过仿真软件SABER和硬件平台对所述控制策略下的软开关、输出电压、峰值电流特性进行了验证,仿真结果与实验结果均证实了上述结论。This paper presents a phase shift plus PWM control strategy for the novel resonant bridge modular multilevel switched-capacitor converter. The proposed method ensures that almost all switching devices keep zero current switching or zero voltage switching, which achieves a high system efficiency. Meanwhile, the output voltage is regulated and the loop peak current is limited in a proper range. The impacts of the switching phase of metal-oxide-semiconductor field-effect transistors( MOSFETs) on both the output voltage and the loop peak current are deduced,respectively. By means of simulation software Saber and hardware platform,the proposed characteristics of soft switching,output voltage,and peak current are verified well.国家自然科学基金(61671400);; 中央高校基本科研业务费(20720150088);; 广东省自然科学基金(2016A030313657);; 福建省科技计划项目(2014H6026);; 福建省自然科学基金(2015J201274)资

Quick estimation of end to end PQoS of image

本文介绍了一种新型的利用图像活动性(IAM)快速估计水下图像端到端体验质量的方法。首先引入结构相似度(SSIM)作为图像感知服务质量(PQo S)参数评价图像质量,将图像初始活动性(IAM)作为区分图像内容的本征参数;随后基于质量向量(QV)的概念,分别分析了非压缩图像的结构相似度,图像初实活动性与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性,以及压缩图像的结构相似性,压缩率与无条件丢失概率(SSIM-IAM.-ulp)之间的联合特性。最后,在上述联合特性的基础上提出了劣化图像SSIM的预测算法。测试实验证明,该类算法有较高的预测准确率,预测误差最低可达0.8%。This paper introduces a novel method for quick estimating the end to end Perceived Quality of Service( PQo S) of underwater image based on image activity measure( IAM). Structure Similarity( SSIM) is first introduced as the evaluation standard of image PQo S parameter to evaluate the quality of image,while the IAM of original image is utilized as an intrinsic parameter to discriminate the image contents. Then,based on the concept of quality vector( QV),the SSIM-ulp-IAM0 features for non-compressed picture are analyzed,and the SSIM-CR-ulp features for compressed picture are analyzed as well. On this basis,the prediction algorithm based on SSIM for the degraded image is proposed. Test experiment result shows that this kind of prediction algorithm has high accuracy rate,and the lowest prediction error reaches to 0. 8%.国家自然科学基金面上(61571377;61471308)项目资

Damage to Alexandrlum tamarense DNA Caused by Hydroxyl Radicals

利用羟基自由基(·OH)压载水处理系统,采用大气压强电场放电技术制取·OH溶液对塔玛亚历山大藻(Alexandrlum tamarense)进行处理。通过普通光学显微镜,荧光显微镜和电子显微镜对·OH处理前后的塔玛亚历山大藻的细胞结构进行观测。结果表明,·OH能有效破坏藻细胞,从而造成藻类死亡。利用随机扩增多态性DNA(random amplification polymorphic DNA,RAPD)和实时定量PCR(RT-PCR)相结合的技术检测·OH对DNA链的破坏作用。共得到了3条有显著差异的扩增产物。这3条扩增产物经测序,并通过NCBI(national center of biotechnology information)的比对分析,最终得到1条可用RT-PCR检测·OH对DNA破坏作用的基因序列。以上的结果表明,·OH压载水处理系统能有效去除塔玛亚历山大藻,并对其DNA造成破坏。This paper referred to a ballast water treatment system by using hydroxyl radical(·OH),in which the atmospheric pressure electric discharge technology was applied to produce hydroxyl radicals to treat Alexandrlum tamarense.The morphology of A.tamarense before and after being treated by ·OH was observed by ordinary optical microscope,fluorescence microscope and electron microscope,respectively.The findings presented that ·OH effectively did damage to the algal cells and led to algae perishing and the damage of ·OH to DNA strand was detected by using combination of random amplified polymorphic DNA(RAPD)and RT-PCR technology.In addition,three DNA bands with differences were found and sequenced;then sequence alignment was performed in the website of National Center of Biotechnology Information(NCBI).Finally,a gene sequence was found for RT-PCR analysis that further proved the damage to DNA strand.In conclusion,the ballast water treatment system of ·OH was capable to removes A.tamarense in water effectively,causing damages of the DNA strand.中国杰出青年学者基金(NSFC)(61025001);; 中国国家科技支撑项目(2013BAC06B00);; 海洋科学研究公共利益的专项基

Sofeware and Hardware Design of Connecting-machine Based on HT46R24

随着家校之间联系的要求不断提高,对相关系统的要求越来越多,为了解决上述问题,简单介绍了一种低成本的无线传输系统方案,在选型上以合泰单片机为核心,完成了以单片射频收发器无线模块为主要工作方式的通信硬件设计,就平台的初始化,模块发送,接收给出了设计分析,最后通过实验数据分析,实现的功能满足设计要求,整个系统具有较高的实用性。With the development of communication between schools and families and the increasing demands for the related system,this paper proposes a low-cost solution of radio transmission system.With MCU HT46R24 as the core technology,radio transmission of nRF2401 as the main tool,the hardware design of the communincation system is completed.This paper gives the design analysis on initialization of the platform,the receiving and sending of the module.Experiment indicates that the design could satisfy all the functional requirements and the whole system is of fairly high practical applicability.福建省重点科技计划项目(No2008H0036

东中国海潮能通量与耗散的数值模拟

东中国海是世界上潮能耗散较强的海区之一,研究东中国海潮能通量及潮能耗散有助于加深对东中国海混合和环流的认识。通过对东中国海的三维数值模拟,计算了潮能通量和耗散率。结果显示:传入东海、黄海、渤海的净潮能分别约为88.333,96.082和2.152 GW,其耗散分别约为79.168,95.254和1.790 GW;底摩擦耗散和垂向混合耗散分别占总耗散的67.1%和32.9%,水平项扩散耗散量级较小,可忽略不计;东中国海高潮能耗散区主要分布于朝鲜半岛沿岸和浙闽沿岸、江苏北部和长江口外侧海域以及杭州湾海域。渤海中部、北黄海西南部、南黄海中部为低潮能耗散区。国家自然科学基金(41476004

Stable Politics with the Highest Growth Rate: Indonesia’s Retrospect in 2011 and Prospect in 2012

2011年,印尼政治与社会继续保持稳定,筹备下届大选使政治气候升温;经济未受全球金融危机的明显影响,呈加速发展之势;双边和多边外交更加积极、活跃和自信。The overall socio-political conditions in Indonesia remained stable in 2011 while the political atmosphere was heating up due to preparations for the next general election.Indonesia’s economy has not been affected seriously by the global financial crisis and maintained the momentum of fast growth.On bilateral and multilateral diplomacy, Indonesia played a more positive, active and confident role

Impacts of mangrove vegetation on macro-benthic faunal communities

大型底栖动物是红树林生态系统的重要组成部分,从红树林大型底栖动物种类、红树林与其周边生境大型底栖动物群落的比较,以及生境变化对动物群落的影响等方面阐述了红树林植被与大型底栖动物群落的关系。从物种数量上看,软体动物和甲壳类动物构成了红树林大型底栖动物的主要部分。影响大型底栖动物分布的环境因素包括海水盐度、潮位和土壤特性等,但在小范围区域,林内动物的分布更多地与红树林植被特性和潮位有关。因此,由于红树林植被破坏或者恢复引起的生境变化,将导致大型底栖动物群落和常见物种种群的变化,尤其对底上动物影响明显;随着人工恢复红树林的发育,林内底栖动物的多样性相应增加,优势种也发生变化。相比位于相同潮位的无植被滩涂,红树林可促进潮间带生物多样性。Mangrove ecosystems,found on marine coasts of the sub-tropics and tropics,have high biological productivity and rich faunal diversity.Mangrove ecosystems provide organic matter and nutrients critical to marine benthic fauna,primarily through litter-fall which is a major component of the detrital food chain.The macro benthic fauna,in turn,provide an important link between mangrove detritus at the base of the mangrove food web and consumers at higher trophic levels.Benthic fauna also may modify the physical and vegetation structure of mangrove ecosystems.Thus,the community of macro benthic fauna needs to be considered in mangrove restoration if holistic ecosystem restoration is to be achieved.This overview examines the current knowledge of macro benthic fauna in mangroves,and the effects of mangrove vegetation on the faunal community in China.In mangroves,mollusks and crustaceans are the major components of the benthic fauna,and this is a common phenomenon all over the world.In China,the mollusks are represented by more species in most studies;this is similar to that in east coast of the Americas,but different from those in other geographic regions.Dominant fauna varies with mangrove regions,but some species such as Cerithidea cingulata,Littoraia elanostoma,sesarmid crabs and fiddler crabs are common,and some of them are dominant.The community structure of macro benthos seems to be influenced by environmental conditions such as hydroperiod,salinity and sediment texture,but the small-scale distribution pattern of benthic fauna mainly depends on the factors with respect to tidal regime and mangrove vegetation.This is due,in part,to the effects mangrove vegetation has on the chemical characteristics of sediment like the organic matter content,total N and pH.Perhaps more important is the role that mangroves play in providing a solid substrate for gastropods and shade that ameliorates the harsh conditions caused by high temperatures and high evaporation rates.These factors are responsible for making levels of secondary biological productivity and faunal diversity in mangroves comparable to those in seagrass meadows and salt marshes.Recent studies carried out in Jiulongjiang Estuary,showed that the total number of animal species within mangrove forests was greater than that of adjacent non-vegetated tidal flats with similar hydrological,topographical and edaphic conditions,indicating that mangrove vegetation promotes intertidal biodiversity.Studies in Jiulongjiang Estuary also demonstrated that mangrove areas with different vegetation ages or species can support different macro benthic assemblages,and the natural/mature mangroves generally support higher faunal biodiversity than the young or disturbed forest.Studies on mangrove rehabilitation and deforestation have further shown that Uca crabs are more abundant in open areas,while gastropods and sesarmid crabs are likely to prefer closed canopy,suggesting that some of these well represented families of macro benthic fauna(e.g.Phascolosoma esculenta,Metaplax elegans,Uca arcuata,Sesarma plicata and L.elanostoma in Jiulongjiang Estuary) could be valuable indicators of ecological change as part of a long term mangrove monitoring.Despite these advances in knowledge of macro benthic fauna communities in mangroves,our understanding is still limited compared to other components of the mangrove ecosystem.Much of the earlier research has focused on the community structure or the biology of individual species,and continued research on inter-specific interactions and the inter-relationship between habitat and the biota is needed.Studies on the relationship between mangrove rehabilitation and macro benthic fauna also are limited and are important for coastal management.福建省自然科学基金项目(2011J05111); 国家自然科学基金项目(41076049;41276077); 海洋公益性行业科研专项项目(201205008