几丁糖酯原料药稳定性研究

该文建立高效凝胶渗透色谱法 (HPGPC) ,明胶比浊法 ,氧瓶燃烧法三种分析方法考察海洋硫酸多糖药物几丁糖酯的稳定性 ,采用这三种方法分别考察几丁糖酯原料药在高温、高湿、强光照射及加速条件下分子量及分布宽度、样品中硫酸根含量及样品含量的变化情况。结果表明 :三种方法均适用于几丁糖酯的稳定性考察 ,几丁糖酯在上述影响因素条件下稳定性良好     

海水现场水色色度及渤海水域水色色度分析

叙述了目前海水现场水色测量的弊端 ,指出数字化海洋水色的潜在应用价值 ;根据色度学及色度学的三原色基本理论 ,确定海洋现场水色的色度要素 ,使海洋现场水色标号统一为物理学中严格的颜色物理量。结合 1 996年渤海水域光谱反射测量 ,对渤海水域 4个典型站位的反射光谱做了水色色度分析 ,并进行了 2种测量方法的比较     

工程风险分析中的风险当量及其评价标准

目前，量化、半量化风险分析是工程风险分析的主流。在对工程进行量化和半量化风险分析时，无论采用什么方法，风险评价指标和评价标准都是关键的重要问题。只有在建立了统一的评价指标和评价标准体系的基础上，对工程进行的风险分析能够得出正确和一致的结论。文章通过对国内外风险分析理论和实践的研究和总结，提出了在工程风险分析中确定风险评价指标和评价标准的原则和方法。     

自适应馈线保护在胜利海上平台供电系统中的应用研究

介绍了自适应电流保护原理在胜利海上平台供电系统中的应用。应用该原理的电流保护克服了传统电流保护一成不变的定值、受系统运行方式和短路类型的影响较大等缺点，它充分发挥了微机的记忆、逻辑判断、数学运算等强大的功能，提供实时计算保护装设处到系统等效电源间的阻抗，通过不断监视负荷电流来自动整定过流保护，并引入了反时限特性，解决了实际存在的技术问题，使得保护装置灵敏可靠。     

Modelling of flow around a near-bed pipeline with a spoiler

Flow around a pipeline with and without a spoiler near a smooth wall is simulated by solving the Navier–Stokes equations. Finite-difference formulation with a second-order upwind scheme in a curvilinear coordinate system is employed. The influences of the spoiler on hydrodynamic forces, pressure distribution, vortex shedding frequency, velocity profile under the pipe, as well as shear stress on the wall are investigated. The attachment of a spoiler significantly increases drag, root-mean-square (RMS) lift, flow through the gap between the pipe and the wall and shear stress on the seabed around the pipe. The spoiler also generates a non-zero mean downward force on the pipeline, which may enhance the self-burial of the pipeline.     

莱州湾温带风暴潮预报研究

本文依据莱州湾羊角沟、夏营两站建国以来的风暴增水资料，对莱州湾建国后发生的风暴潮进行了统计分析，并探讨了温带风暴潮产生的物理机制，此外还对莱州湾温带风暴增水以及诱发增水的天气形势进行了分析分类。在此基础上建立了莱州湾温带风暴潮统计预报方法，并在作业预报中对模型进行了检验，取得较为理想的效果。     

Argo-认识和预测气候变化的全球海洋观测计划

1　全球海洋观测网 (Argo)为了解全球气候的变化 ,海洋学界正在做一项雄心勃勃的事业 ,即设计并部署一个全球海洋观测系统 ,以便对海洋从季节到十年间的变化作前所未有的长期跟踪观测。这项计划的实施 ,将使人类对气候的认识和预测向前迈出一大步。全球海洋观测系统的现场支柱就是 Argo剖面浮标网 ,将为人类提供一个全球海洋次表层数据库。Argo剖面浮标观测网将由 3 0 0 0个自动仪器组成 (图 1 ) ,每个浮标每隔 1 0天发送一组取自 2 0 0 0 m到海面的温度和盐度剖面资料 (图 2、3 )。在全球大洋内每隔大约 3个经纬度布设一个浮标 ,其数据通…     

浙江岱衢洋大黄鱼 Pseudosciaena crocea (Richardson) 个体生殖力的研究

种群的补充、生长和死亡是决定种群数量及其变动类型的三个相互联系过程。要阐明种群补充过程的基本理律,就必须对它的各个环节加以深入的研究。生殖力的变动及其调节规律就是补充过程的最主要环节之一。 从1958年秋季开始,我们进行了大黄鱼生殖力种内规律的研究。本文是其中的一个组成部分,在于研究浙江舟山渔场岱衢洋产卵场的春宗与秋宗大黄鱼的个体生植力变动规律,着重阐明一个种群内个体生殖力的变动与调节规律及其影响因子,探讨同一地理种群的不同生物学宗个体生殖力变动规律的差异及其适应意义o 春宗大黄鱼共观察分析了304尾;秋宗大黄鱼由于取样不易,仅观察分析了41尾。所据以观察分析的资料均系未出现透明和游离状卵子的典型IV期卵巢。卵子的计数是采用重量取样法,取样重为0.2-0.3克。卵巢采用5%福尔马林液固定保存,称重前几天移入80%酒精中,这样可以减少因水分重量所产生的误差。取样时先除去卵巢外膜井取卵巢中部卵子作为计数样品。凡是开始累积卵黄颗粒的小型卵子到半充满与完全充满卵黄的中型及大型卵子都进行计算,卵径范围为0.16一0.99毫米。     

Seasonality and interannual variability of freshwater inflow to a large oligohaline estuary in the Northern Gulf of Mexico

Quantity, timing, duration, and fluctuation of freshwater inflow are important factors affecting the development and health of aquatic and adjacent wetland ecosystems in coastal estuaries. This study assessed six decades of freshwater inflow from the Amite River, Tickfaw River, and Tangipahoa River watersheds to Lake Pontchartrain, a large oligohaline estuary in the Northern Gulf of Mexico, whose flood waters caused recent damage to the city of New Orleans in the aftermath of Hurricane Katrina. By utilizing the long-term (1940–2002) river discharge and climatic data from the three major tributary watersheds, monthly and annual freshwater inflows have been quantified and their spatial and temporal variations have been analyzed. On average, the three rivers discharged (±standard error) 0.27 ± 0.04 km³ freshwater monthly and 3.29 ± 0.15 km³ freshwater annually into the lake estuarine system, with the highest inflow from the Amite River (0.16 ± 0.03 m³ mon⁻¹, and 1.91 ± 0.09 km³ yr⁻¹) and the lowest inflow from the Tickfaw River (0.03 ± 0.00 km³ mon⁻¹, and 0.34 ± 0.02 km³ yr⁻¹). A distinct seasonality was evident with over 69% of the total annual inflow occurring during December and May (wet months) and with a low flow period from August to November (dry months). The monthly inflow during the wet months was positively correlated with the monthly precipitation (r² = 0.64), while the monthly inflow during the dry months was subject to evapotranspiration. Furthermore, the study found a 20-year low flow period from 1954–1973 (2.76 ± 0.24 km³ yr⁻¹) and a 24-year high flow period from 1975–1998 (3.84 ± 0.24 km³ yr⁻¹), coinciding with both the climate variation and population growth in the watersheds.     

天然感潮河道水流紊动特性分析

采用多谱勒三相流速仪，在长江口徐六泾水文观测断面分别进行了涨潮、落潮时中泓与近岸垂线的流速观测，根据这些观测资料，对天然感潮河段潮流紊动的周期、频率、概率密度函数等进行了定量的数学描述，并对时均流速、紊动强度、雷诺应力等沿垂线分布进行了分析计算。