湄洲湾海洋生物体内痕量金属含量的研究

用湿法消化和火焰原子吸收分光光度计测定了福建湄洲湾六种海洋生物体内Ｚｎ、Ｃｕ、Ｐｂ、Ｃｄ、Ｎｉ、Ｆｅ、Ｍｎ、Ｃｏ的含量，并计算了富集系数．湄洲湾海洋生物体内痕量金属含量与国内外某些海域的相近，远低于海洋生物评价标准和人体消费卫生标准．     

关于遗传力概念及其估算方法的探讨

本文对目前国内高等院校遗传课本中较为流行的遗传力概念及其估算方法进行探讨,笔者认为这些课本中所给出的遗传力概念欠明确;其估算方法的理论论述欠妥.     

指数分布族参数的一类非线性估计的可容许性

本文首先对于离散型指数分布族参数,获得了M(1/(X_1+α_1)…,1/(X_1+α_1)′+γ是可容许估计的必要条件,得到关于M和γ的一个结构;其次利用Zidek引理给出了单参数指数族时估计量(αX+b)/(cX+d)为可容许的充分条件,在附加的一个很弱的条件下,它可看成是[1]中主要定理的简单证明。     

集值函数向量优化锥弱有效解的最优性条件

本文在局部凸拓扑向量空间中对集值函数向量优化的锥弱有效解给出了ＦｒｉｔｚＪｏｈｎ型和Ｋｕｈｎ－Ｔａｃｋｅｒ型必要条件，同时还给出了它的充分条件．     

时效处理对Ni－Cr－Al－Ce高硬弹合金组织和性能的影响

在Ｎｉ－Ｃｒ合金中加入３％ａｌ形成弥散硬化型的高硬弹台金．试验结果表明时效温度５５０℃，５ｈ时进行分级时效能获得８０％质量百分数的过饱和宫Ｃｒ（α）相比配制成分高４０％Ｃｒ．并且测定析出富Ｃｒ（ａ）相颗粒的平均直径Ｄ为１．４６８５ｍｍ，颗粒的总面积占测绘面积的百分数ＰＡ为１５．６７％，分级时效析出大量弥散分布的过饱和富Ｃｒ（α）相强化合金基体，提高了合金的硬度和弯曲强度．     

Turbo-Based DNW Algorithm for Compressed Video in VLC Domain

In order to improve the robustness of the differential number watermarking (DNW) algorithm proposed by us before, we proposed turbo-based DNW (TDNW) in which the turbo code was employed in the DNW algorithm. The turbo code was used to encode the message prior to watermark embedding and decode the watermark posterior to watermark detection. From the analysis and experiments, the following conclusion could be drawn. The T-DNW algorithm has little higher computational complexity than DNW. And both algorithms have the same performance ;,n terms of watermark visual quality impact. Furthermore, the TDNW algorithm is much more robust against some common attack than DNW. Ahhough the TDNW algorithm sacrifices a half payload, we think the achievements are encouraging.     

Hemoglobin Biocatalyst Polymerization of Aniline by UV-vis Spectraphotometry

A biocatalytic route for the synthesis of a water soluble and conducting complex of polyaniline (PAN1)/sodium dodecylsulfate (SDS) is presented. Hemoglobin is used in SDS anion surfactant . The polymerization proceeded quickly to result in a homogeneous emeraldine-colored dispersion of PANI. Absorption spectra of PANI/SDS in the aqueous dispersions at various pH values confirms that the reversibility of dedoping and redoping process of PANI/SDS and shows that the transition from emeraldine salt to emeraldine base form occurred at about pH 10.0-11.0 in this anionic micellar system. PANI/SDS in the organic solutions dedoped initially and redoped after 24h.     

A Trust Scheme Based DRM Model for P2P System

0 IntroductionP2P architectureis a distributed network model ,whichisindependent of server[1]. However , at present , P2Ptechnologyisinfamous for copyright infringement .In P2Par-chitecture,“No-government”may be a seedbed of pirate,vi-rus andillegal resource. Recently there are a large number oflitigations relational to P2P network in American. Napstercaseis the most famous copyright lawsuit of its biggest scaleand most infection[2 ,3].DRM(Digital Right Management) technology is i mpo…     

蓝色圆珠笔油墨的HPLC鉴别

本文采用高效液相色谱法对国内外生产的各种蓝色圆珠笔油墨的种类进行了鉴别。采用ZORBAXBonus-RP柱,流动相为乙腈-水,检测波长为580nm,柱温25℃,本法简便,准确,灵敏度高,重复性好,可用于蓝色圆珠笔油墨种类的鉴定。     

可生物降解高吸水材料的制备以及制备工艺对吸水倍率的影响

以淀粉为原料，采用反相悬浮聚合方法，通过研究交联反应时反应时间、搅拌速度、反应温度以及催化剂质量分数、交联剂质量分数、淀粉质量分数和分散剂质量分数一系列工艺条件制备出可完全生物降解的高吸水材料，通过测定高吸水材料的吸水倍率揭示出制备工艺对可生物降解高吸水材料吸水倍率的影响规律。