PSBAD菌体蛋白生物效应评价

本文从三方面试验,较完整地评价了PSBAD 的生物学效应.结果表明:(1)PSBAD 粗蛋白含量18.67%,脂肪含量0.83%,糖份微量.粗蛋白质量较好,表观消化率57.17%,净利用率50.94%,生物价89.(2)LD_(50)>10g/(kg 体重),Ames 试验、精子畸变试验和微核试验均呈阴性.(3)肉鸡喂养试验中平均增重180g,料肉比减少0.5,且呈现抗病防病、增加免疫力的趋势.为此,建议PSBAD 作为一种优质安全的饲料添加剂.     

控制迹与线图的泛圈性

设u与v是圈G中的两个任意给定的顶点,本文给出图中存在连接u和v的控制迹的一个充分条件.若图G的阶n≥5,又对一切xy∈B(G)都有d(x) d(y)≥n,本文证明线图L(G)是点泛圈的,且可使得与任一点关连的各个图几乎一个套一个,即几乎是可扩充的.     

On Size of Unicycle Hypergraphs

1　IntroductionHypergraphsaresetsystemsoffinitesets.Theyarethemostgeneralstructureandplayanimportantroleinthediscretemathematics.Inrecentyears,thecomputerscientistsin-troducedtheconceptofacyclicandcyclichypergraphsandhaveprovedthattheyareim-portantinthedesignofdatabases(see[1,2]).In[3,4],themeet-semilatticeandausefulparameternamedcyclomaticnumberwasintroducedinstudyingthecyclicityofhyper-graphs.Lately,newsystemsofaxiomsforpaths,connectivityandcyclesofhypergraphsareconstructed.Withtheaidofthes…     

金融危机对供电企业的影响及应对

美国金融危机正在逐渐波及我国实体经济，并传导到供电行业，供电企业的经营发展正面临严峻的挑战和考验。面对经济运行中出现新矛盾和新问题，供电企业潜心研究各种挑战和困难中的机遇，用新思路、新举措创造性开展工作，力求打赢这场秧及全球的金融风暴战，向党和政府交出一份合格的答卷。     

流体静高压容器泄漏原因分析及预防措施

根据流体静高压容器加载时下压杆爆炸前后的实验数据、检验结果,从材料选择、高压容器对中、上下缸载荷分配三方面分析了容器泄漏原因:(1)阳磨菇头选材有错、热处理不当导致Bridgman密封组件失效;(2)下压杆选材及热处理工艺有误导致加载时脆性断裂;(3)压杆导向和定位不良,球面垫块球半径过大均可严重导致压杆脆性断裂;(4)密封套圈无支承面太小,容易造成上下油缸压力差偏大,引起下压杆炸碎。由此,提出相应的预防措施。     

An MC~2 Linear Programming Approaches to Portfolios

1　 IntroductionThe methods of determining combined weighted coefficients has been extensively studiedby a number of scholar( Granger and Ramanathan,1984;Clemen,1986 ;Diebold andPanly,1987;Cunter and Aksu,1989;Zhou and Yang,1993,1996 ) .These studiesinclu…     

Management Communication in University’s Digital Library

IntroductionAmericanfuturologistNaisbitthadsaid :“Futurecompetitionisthecompetitionofmanagement,thefocusofwhichistheeffectivepersonnelcommunicationandcross organizationalcommunication.”[1]Communicationisthetransferringprocessofinformation ,knowledgeandemotionamongindividualsandgroups,throughwhichaf fectothers’attitudesandfeelings,andeventuallyaffecttheirbehaviors.Forknowledgehasbeentheprimacyele ment,managementcommunicationinknowledgeeconomicagesismoreimportantthananyotherepoch ,whosestyle…     

Research on digital watermark using pre-processing technology

0　IntroductionWiththeenhancementoftheflexibilityandmaturityofdigi talaudiotechnology ,protectingdigitalaudiocopyrighthasbecomeveryimportant.Toprotectthecopyrightofdigitalaudio ,encryptiontechnologyhasoccurred.Butwhendecrypted ,thedigi talaudioproductionwillbereplicatedwithoutanyloss.Digitalau diowatermarkingtechnologyassociatesthecopyrightinformationwithcontentsofthedigitalaudioproductionbyembeddinganin audiblesignatureintotheoriginalaudioproduction.Wemayidenti fythedigitalaudioproductionbyt…     

Virtual Facilit Layout Design Using Virtual Reality Techniques

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