似刺鳊鮈肌肉营养成分与品质的评价   总被引：1，自引：0，他引：1  

顾若波  徐钢春  华丹  闻海波  王玉芳  张守领 《中国海洋大学学报(自然科学版)》2008,38(2):263-268

利用常规方法对似刺鳊鮈(Paracanthobrama guichenoti Bleeker)进行了含肉率、可食率、肌肉弹性、肌肉营养成分测定并系统评价了鱼肉品质,旨在评价似刺鳊鮈的营养价值,为似刺鳊鮈的营养生理、养殖和加工研究提供基础资料.结果显示,似刺鳊鮈雄鱼的含肉率为(72.76±0.89)%,雌鱼为(68.99±0.76)%;雄鱼可食率为(78.36±0.93)%,雌鱼为(83.75±1.01)%;肌肉弹性值为(547.86±21.48)g;鲜样中粗蛋白含量为(18.10±0.17)%,粗脂肪含量为(2.32±0.13)%,水分(78.10±0.87)%,灰分(1.07±0.12)%;肌肉含有17种氨基酸,总量占鲜样的(14.91±0.31)%,其中7种人体必需氨基酸(除色氨酸外)含量占鲜样的(6.07±0.07)%,与非必需氨基酸的比值(EAA/NEAA)为68.67%,其必需氨基酸构成比例基本符合FAO/WHO的标准.必需氨基酸指数(EAAI)为73.46,支链氨基酸与芳香族氨基酸的比值(F值)为2.21,4种鲜味氨基酸占鲜样的5.73%;脂肪酸中EPA与DHA质量分数分别为2.94%,1.26%;微量元素含量丰富,钙镁含量较高;鱼肉品质系统评价结果表明,似刺鳊鮈是一种营养价值较高且有一定保健作用的鱼类.  相似文献   

Evaluation of Fluorobenzoate Tracers in Surface Soils   总被引：2，自引：0，他引：2  

Dan B. Jaynes 《Ground water》1994,32(4):532-538

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The international politics of whaling: Peter J Stoett UBC Press, 1997, 228 pp. $65.00. ISBN 0-7748-0605-2     

Dan Goodman 《Marine Policy》1997,21(6):547-549

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海量多波段星表数据的交叉证认的实现   总被引：2，自引：1，他引：1  

高丹  张彦霞  赵永恒 《天文研究与技术》2005,2(3):186-193

许多天文学家需要星表来选源、证认和研究。目前国外有一些大的数据中心提供了星表查询、多源查询(即小样本交叉证认)、可视化等功能。但是随着大数据量及全波段天文时代的到来,这些服务已经越来越不能满足天文学家的需求。在详细分析了国外数据中心的服务后,提出了新的问题,并给出一套解决方案。着重讨论了任意两个星表的交叉证认和大数据量星表的交叉证认的实现,以及交叉证认结果的分类和参数的自由选择等方面的课题。  相似文献   

A concordance model of the Lyman α forest at z= 1.95     

Tridivesh Jena  Michael L. Norman  David Tytler  David Kirkman  Nao Suzuki  Angela Chapman  Carl Melis  Pascal Paschos  Brian O'Shea  Geoffrey So  Dan Lubin  Wen-Ching Lin  Dieter Reimers  Eckardt Janknecht  Cora Fechner 《Monthly notices of the Royal Astronomical Society》2005,361(1):70-96

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Gyldén Model: The Slowly Changing Equivalent Gravitational Parameter     

Cătălin Cucu-Dumitrescu  Dan Selaru 《Astrophysics and Space Science》1997,250(1):93-107

In the Gyldén problem, the case of slowly changing equivalent gravitational parameter (e.g.p.) is studied. Assuming the following law for the variation of the e.g.p.: μ (t) = μ₀+ εμ (εt), ε< μ₀, we obtained a) a O(ε⁴ T⁴)-approximation of the solution, on a shortened time scale (0,T), with T of order o(ε^-1),for the general case (i.e. the support function μ is O(1)-valued and admits an expansion in power series of its argument), and b) a O(ε²)-approximation of the solution, on a natural timescale of order O(1/ε), for the case of a bounded variation rate (i.e. the support function μ and its derivative are both O(1)-valued). For the study of the first problem we introduced a type of Lissajous variables and used the Lie-Hori normalization scheme; for the second problem we used the Delaunay variables and applied the von Zeipel method for approximate integration. The physical interpretation of the results is in both cases the same: within the corresponding limits of approximation, the variation of e.g.p. (i) has no effect on the size of the osculating ellipse, (ii) it sets the pericenter in slow rotation and (iii) it introduces a secular variation in the longitudes. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

VO_IMPAT:中国虚拟天文台图像处理分析工具     

王丹  赵永恒 《天文研究与技术》2006,3(3):295-303

中国虚拟天文台图像处理分析工具（VO_IMPAT），是由国家天文台虚拟天文台项目组开发的一项服务，它提供了对数字巡天图像数据（Digital Sky Survey，DSS）、天文星表以及其他数据库的交互访问。VO_IMPAT的设计目的是实现多波段天文数据的融合。可以将不同波段的星表叠加到DSS底图上，如光学波段的USNO星表、近红外波段的2MASS星表、射电波段的NVSS星表和X射线波段的RASS星表。同时VO_IMPAT还可以对图像进行放大、缩小、伪彩色、等高线、直方图、尖锐化、平滑化、旋转等处理，不同的星表数据可以采用不同的颜色和图标显示。  相似文献   

Discrimination of sedimentary facies by association analysis     

Dan Gill 《Mathematical Geology》1993,25(4):471-482

The ability of association analysis to discriminate sedimentary facies was tested on Purdy's modal analyses of modern sediments of the Great Bahama Bank. Purdy's data set has served in the past as a standard reference for evaluating various multivariate classification algorithms. In order to adapt Purdy's data to association analysis, the percent abundance of the 12 constituents was converted to binary form by dichotomizing each variable on its mean value. The results obtained by association analysis are virtually identical to those obtained by Purdy and other authors. The same four main sedimentary facies were discriminated; 86% of the samples were identically classified (97% when misclassified borderline cases are counted as matches); the total partition variance of the classification is only negligibly greater (4%); and the grouping of the variables yielded the same four groups. The rank order of the three division-attributes responsible for the sample classification is fines, oolites, and corals. Association analysis has been employed by other authors to differentiate meaningful facies groups in studies of ancient reef carbonates, modern reef sediments, and heavy minerals in stream sediments. In all these studies, the results were found to be compatible with those obtained by using the continuous quantitative measurements, indicating that qualitative binary data may often be sufficient for the purpose of facies discrimination in many branches of geology and that association analysis is an effective method for this purpose.  相似文献   

智能照明系统在现代建筑照明中的应用研究   总被引：1，自引：0，他引：1  

陈丹 《成都信息工程学院学报》2007,22(6):735-738

在对传统照明系统和智能照明系统进行对比分析的基础上,剖析了智能照明系统的控制策略,并结合实际的工程应用,着重讨论了基于ABB I-Bus产品的智能照明控制系统的实现,结果表明该系统具有高效、便捷、节约能源等优点.同时,还对系统与建筑物楼宇自控系统问的系统集成方式进行了研究.  相似文献   

New Developments in Water Efficiency     

Tony T. Gregg Amanda Dewees Drema Gross Bill Hoffman Dan Strub Matt Watson 《中国海洋大学学报(英文版)》2006,5(4):375-380

1Water LossInitiativesUnaccounted-for water(or unbilled water)has beenreceiving newscrutiny at both the state and nationallevels.For years,water conservationeffortsin Europehave emphasized reduction in water loss to a muchgreater extent thaninthe United S…  相似文献