73 research outputs found

    On practice of ISO14000 environmental management System in the administrative district

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    以厦门市鼓浪屿区实施的 ISO14 0 0 1标准为研究实例 ,探讨了行政区域实施 ISO14 0 0 1标准的意义、实施步骤和环境管理体系的构架模式 ,可为其他类似区域建立环境管理体系所借鉴To implement ISO14001 standards in Gulangyu District is presented. The significance, process and framework for a district to apply ISO14001 standards are discussed, Parallel district can use this example for refe\{rence\} to establish the environmental management systems.厦门市软科学计划项目 ( No.35 0 2 Z2 0 0 0 5 10

    Resolving Excitation Emission Matrix Spectroscopy of Estuarine CDOM with Parallel Factor Analysis and Its Application in Organic Pollution Monitoring

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    [摘要:利用激发发射矩阵荧光光谱(EEMs) 并结合平行因子分析( PARAFAC) ,研究了九龙江口有色溶解有机物( CDOM) 的荧光组分特征及其河口动力学行为,并探讨其作为河口区有机污染示踪指标的可行性. 利用PARAFAC 模型识别出九龙江口CDOM 由2 类4 个荧光组分组成,即类腐殖质荧光组分C1 ( 240,310 /382 nm)、C2 ( 230,250,340 /422 nm)、C4 ( 260,390 /482 nm) 及类蛋白质荧光组分C3(225,275 /342 nm) . 模型结果表明,传统寻峰法指认的短波类腐殖质A 峰区域(240 ~ 290 /380 ~480 nm) 实际上并非一个单独的荧光峰,而是若干荧光组分的组合,并且它与传统上指认的长波区海源类腐殖质M 峰、陆源类腐殖质C 峰之间存在内在联系. 包含M 峰的C1 组分在河口区随盐度增加呈稀释降低趋势,表明M 峰并不能被认为是海洋来源的专有特征峰. 类腐殖质组分C1 和C2 在盐度< 6 的河口最大浑浊带区表现出一定的添加行为,之后在河口混合过程中呈 保守行为,而类腐殖质荧光组分C4 则在整个河口混合过程中都呈保守行为. 类蛋白质荧光组分C3 在河口混合过程中呈不保守行为,并且在总荧光组分中所占比例在高盐度区呈上升趋势. EEM-PARAFAC 不仅可示踪九龙江不同支流DOM 的特征,并且还可很好地示踪九龙江口的有机污染程度.]、[Abstract:The distribution and estuarine behavior of fluorescent components of chromophoric dissolved organic matter ( CDOM) from Jiulong Estuary were determined by fluorescence excitation emission matrix spectroscopy (EEMs) combined with parallel factor analysis ( PARAFAC) . The feasibility of these components as tracers for organic pollution in estuarine environments was also evaluated. Four separate fluorescent components were identified by PARAFAC,including three humic-like components ( C1: 240,310 /382 nm; C2: 230,250,340 /422 nm; C4: 260,390 /482 nm) and one protein-like components (C3: 225,275 /342 nm) . These results indicated that UV humic-like peak A area designated by traditional“peak-picking method”was not a single peak but actually a combination of several fluorescent components,and it also had inherent links to so-called marine humic-like peak M or terrestrial humic-like peak C. Component C2 which include peak M decreased with increase of salinity in Jiulong Estuary,demonstrating that peak M can not be thought as the specific indicator of the“marine”humic-like component. Two humic-like components C1 and C2 showed additional behavior in the turbidity maximum region ( salinity < 6 ) and then conservative mixing behavior for the rest estuarine region,while humic-like components C4 showed conservative mixing behavior for the whole estuarine region. However,the protein-like component C3 showed nonconservative mixing behavior, suggesting it had autochthonous estuarine origin. EEMs-PARAFAC can provide fluorescent fingerprint to differentiate the DOM features for three tributaries of Jiulong River. The observed linear relationships between humic-like components and absorption coefficient a(280) with chemical oxygen demand (COD) and biological oxygen demand(BOD5 ) suggest that the optical properties of CDOM may provide a fast in-situ way to monitor the variation of the degree of organic pollution in estuarine environments.]国家自然科学基金项目( 40810069004, 40776041, 40676046) ;新世纪优秀人才支持计划项

    Generating High-concentration Solution of Reactive Oxygen Species by Strong-field Ionization Discharge

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    为优化氧活性粒子(rOS)在水中的生成条件,并为rOS溶液生成装置提供优化系统参数的依据,研究了rOS质量浓度在水温、PH值、O2给气体积流量、rOS投加体积质量,以及系统气压(混溶压力)等因素作用下的变化规律。实验中,气态rOS在强电离条件下通过介质阻挡放电生成,以O3计,通过O3检测仪测定其浓度;水中rOS质量浓度采用dPd分光光度法测定,用CrS来表示。实验结果表明:水温、PH值与CrS呈极显著负相关(相关系数P0.05);CrS在水温分别为16℃与24.5℃之间、PH=6.5与PH=7.0之间、O2给气体积流量为2 l/MIn与3 l/MIn之间均为差异不显著(P>0.05),其余各水温、PH值、O2给气体积流量之间均为差异显著(PO2给气体积流量>系统气压与O2给气体积流量交互作用。To optimize the generating condition of reactive oxygen species(ROS) in solution, and to provide a reference for improving ROS preparation system, we investigated the effects of several parameters, including solution temperature, solution pH, O2 input, ROS dosages, and system pressure, on the concentration of obtained ROS solution.Gaseous ROS was generated in a strong-field ionization condition induced by under dielectric barrier discharge(DBD), and its dosage represented by O3 was measured by ozone monitor.ROS in solution was caught by DPD(N, N-diethyl-p-pHenylenediamine), which was measured by DPD spectrophotometry, and the concentration of ROS solution was denoted by CRS.According to the experiments, both water temperature and pH have significant negative correlation with CRS(relativefactor P0.05).The differences between CRS are insignificant(P>0.05) under conditions of solution temperature of 16 ℃, 20 ℃, 24.5 ℃, solution pH of 6.5 and 7.0, as well as O2 input of 2 L/min and 3 L/min(P>0.05), but they are highly significant(P<0.01) or significant(P<0.05) under other tested conditions.Moreover, CRS significantly increases with the decrease of miscibility pressure(P<0.01), and it is significantly affected by the interaction between miscibility pressure and O2 input under higher ROS dosages(P<0.01).Lower water temperature, lower pH, higher ROS dosages, and lower miscibility pressure are all beneficial to increasing the concentration of ROS(CRS), which is significantly affected by the change of several parameters including solution temperature in the lower range, pH around 7, O2 input in the range of larger amount, etc.On the condition of high ROS dosage input, CRS is influenced by miscibility pressure, O2 input, and the interaction between miscibility pressure and O2 input in a descending order.国家高技术研究发展计划(863计划)(2012AA062609); 国家科技支撑计划(2013BAC06B02); 国家杰出青年科学基金(61025001)~

    戊型肝炎病毒基因1型和基因4型中和表位区域分子差异研究

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    戊型肝炎病毒(HEV)根据易感宿主的差别可以分为两大类:一类只分离自人的H(Human)类,包括HEV-1和HEV-2;一类为人畜共患的Z(Zoonosis)类,包括HEV-3和HEV-4。本研究通过比较这两类HEV的ORF2aa368~606区段,发现存在4个类保守的差异位点,均位于HEV的主要中和表位区域aa459~606,分别是aa483、aa492、aa497和aa599;对这四个位点进行定点替换突变,以一组能够捕获HEV-1和/或HEV-4的单克隆抗体比较各种突变体的免疫反应性,结果表明仅aa497的差异造成了这两类HEV中和表位构象的部分差异,提示aa497及其相关的病毒表面结构差异在H类和Z类HEV宿主选择中可能扮演重要角色

    闽南文化研究国际笔谈会论点选载

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    2013年12月21日,由闽南师范大学闽南文化研究院主办的“2013闽南文化研究国际笔谈会“在国际学术交流中心召开。来自海峡两岸及日本、新加坡等国家的闽南文化研究方面的专家、学者二十余人出席了会议。会议围绕着闽南文化的内涵、外延及特征,闽南文化的当代价值与社会功能,闽南文化研究的理论与方法,闽南文化的跨文化阐释,闽南文化的世界性及其意义,闽南文化与两岸交流,闽南文化的生态保护,闽南文化学科建设与人才培养等议题展开了深入的研讨,言简意赅,探幽发微,对当下闽南文化理论研究势必产生积极的影响。本期节录专家们的精彩发言,以飨读者,也希望由此来带动和促进闽南文化研究的进一步升华

    中国物理海洋学研究70年:发展历程、学术成就概览

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    本文概略评述新中国成立70年来物理海洋学各分支研究领域的发展历程和若干学术成就。中国物理海洋学研究起步于海浪、潮汐、近海环流与水团,以及以风暴潮为主的海洋气象灾害的研究。随着国力的增强,研究领域不断拓展,涌现了大量具有广泛影响力的研究成果,其中包括:提出了被国际广泛采用的"普遍风浪谱"和"涌浪谱",发展了第三代海浪数值模式;提出了"准调和分析方法"和"潮汐潮流永久预报"等潮汐潮流的分析和预报方法;发现并命名了"棉兰老潜流",揭示了东海黑潮的多核结构及其多尺度变异机理等,系统描述了太平洋西边界流系;提出了印度尼西亚贯穿流的南海分支(或称南海贯穿流);不断完善了中国近海陆架环流系统,在南海环流、黑潮及其分支、台湾暖流、闽浙沿岸流、黄海冷水团环流、黄海暖流、渤海环流,以及陆架波方面均取得了深刻的认识;从大气桥和海洋桥两个方面对太平洋–印度洋–大西洋洋际相互作用进行了系统的总结;发展了浅海水团的研究方法,基本摸清了中国近海水团的分布和消长特征与机制,在大洋和极地水团分布及运动研究方面也做出了重要贡献;阐明了南海中尺度涡的宏观特征和生成机制,揭示了中尺度涡的三维结构,定量评估了其全球物质与能量输运能力;基本摸清了中国近海海洋锋的空间分布和季节变化特征,提出了地形、正压不稳定和斜压不稳定等锋面动力学机制;构建了"南海内波潜标观测网",实现了对内波生成–演变–消亡全过程机理的系统认识;发展了湍流的剪切不稳定理论,提出了海流"边缘不稳定"的概念,开发了海洋湍流模式,提出了湍流混合参数化的新方法等;在海洋内部混合机制和能量来源方面取得了新的认识,并阐述了混合对海洋深层环流、营养物质输运等过程的影响;研发了全球浪–潮–流耦合模式,推出一系列海洋与气候模式;发展了可同化主要海洋观测数据的海洋数据同化系统和用于ENSO预报的耦合同化系统;建立了达到国际水准的非地转(水槽/水池)和地转(旋转平台)物理模型实验平台;发展了ENSO预报的误差分析方法,建立了海洋和气候系统年代际变化的理论体系,揭示了中深层海洋对全球气候变化的响应;初步建成了中国近海海洋观测网;持续开展南北极调查研究;建立了台风、风暴潮、巨浪和海啸的业务化预报系统,为中国气象减灾提供保障;突破了国外的海洋技术封锁,研发了万米水深的深水水听器和海洋光学特性系列测量仪器;建立了溢油、危险化学品漂移扩散等预测模型,为伴随海洋资源开发所带来的风险事故的应急处理和预警预报提供科学支撑。文中引用的大量学术成果文献(每位第一作者优选不超过3篇)显示,经过70年的发展,中国物理海洋学研究培养了一支实力雄厚的科研队伍,这是最宝贵的成果。这支队伍必将成为中国物理海洋学研究攀登新高峰的主力军

    Study on the Photosynthetic Characteristics of Bothriochloa ischaemum under Different Water and Nutrient Conditions Ⅲ. Chlorophyll Fluorescence Kinetic Parameters

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    本研究揭示了不同土壤养分条件下,黄土丘陵区乡土草种白羊草(Bothriochloa ischaemum L.Keng.)对土壤水分短期变化的光合生理响应及其适应性,旨在为充分发挥其光合潜力以及黄土丘陵区白羊草人工草地的建设与管理提供科学依据。采用盆栽控制试验,比较研究3种养分(CK,P和NP)处理下白羊草叶绿素荧光动力学参数对土壤短期水分胁迫和旱后复水的响应特征。结果表明:充分供水条件下,P与NP处理显著提高了白羊草叶片最大光化学效率(Fv/Fm)和实际光化学效率(&Phi;PSⅡ),使表观光合电子传递速率(ETR)升高,且降低了非辐射性能量耗散(NPQ)。短期干旱胁迫下,P与NP处理的Fv/Fm降幅显著低于CK处理,复水1 d后的Fv/Fm恢复水平均显著高于CK处理(P&lt;0.05),表明P和NP营养有助于增强白羊草对短期干旱胁迫的耐旱性及复水后叶片光合功能的恢复能力

    Study on the Photosynthetic Characteristics of Bothriochloa ischaemum under Different Water and Nutrient Conditions Ⅰ.Diurnal Variation of Photosynthesis

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    为揭示黄土丘陵区乡土种白羊草(Bothriochloa ischaemum L. Keng.)在不同水肥供应条件下的光合生理特征,本研究采用盆栽控制实验,比较研究了白羊草在2个水分水平(HW-80%FC和LW-40FC%)和3个养分(CK、P和NP)处理下的光合生理日变化特征。结果表明:HW下白羊草光合速率日变化均呈&quot;三峰&quot;型曲线。LW下,P和NP处理呈&quot;双峰&quot;型曲线,CK处理呈&quot;三峰&quot;型曲线,均具有明显的光合&quot;午休&quot;现象。不同水肥条件下白羊草叶片水分利用效率日变化均呈&quot;L&quot;型。HW下,白羊草光合速率日均值无肥处理显著高于其他处理(P&lt;0.05),LW下,3养分处理间白羊草光合速率日均值无显著差异,而不同养分处理下,土壤水分胁迫均显著降低了白羊草光合速率日均值,并使光合&quot;午休&quot;程度加剧,水分是限制白羊草光合生理过程的首要因素

    Study on the Photosynthetic Characteristics of Bothriochloa ischaemum under Different Water and Nutrient Conditions Ⅱ. Light-Response Curve

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    为揭示黄土丘陵区乡土草种白羊草(Bothriochloaischaemum(L.) Keng.)在不同水肥供应条件下的光合生理特征,本研究采用盆栽控制实验,比较研究了白羊草在2种水分水平(HW-80%FC和LW-40FC%)和3种养分(CK,P和NP)处理下的光合光响应曲线特征。结果表明:非直角双曲线模型能很好的拟合白羊草光响应曲线。充分供水条件下(HW),土壤NP营养提高了白羊草最大净光合速率(P&prime;max),降低了暗呼吸消耗(Rd)并且保持较低的光合补偿点(LCP)和较高的光饱和点(LSP),表明NP营养有利于提高白羊草对光照的广幅适应能力和光合潜力。水分胁迫条件下(LW),P处理显著提高了白羊草P&prime;max,其表观量子效率(a)和LCP也相对较高,表明施磷将有利于提高干旱条件下白羊草的光合能力
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