Immunogenetics

Summary The 1985 Catalog of Mapped Genes (Human Gene Mapping 8; 33) has been used to pick out the known, immunologically important genes; these are then discussed in the following order: 1. genes controlling organs, tissues and cells of the immune apparatus, 2. genes determining self structures, 3. genes determining the structures of immunological specificity, 4. genes determining substances with immunoregulatory and effector properties. The symbols for the genes and the biological functions of their products are explained. The genetics of the ABO blood groups, of the HLA-system and of antibody formation are given in rather more detail.     

MD Method in Solving Multiple Criteria Decision Problems Arising from Investment Systems

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透射焦散线法研究甲板开口边缘Ⅰ型裂纹的应力强度因子

为研究船舶甲板开口边缘受拉的Ⅰ型裂纹的应力强度因子,并探索焦散线方法在船舶结构中的应用,采用透射焦散线方法进行了实验研究．实验中模拟一般散货船带舱口的上甲板,制作了带孔有机玻璃透明试件,并采用加热法开出孔边裂纹．在数字焦散线实验系统中进行实验,获得了清晰的全场焦散线数字图象．应用焦散线图象自动处理程序精确地测出焦散线的最大直径以计算应力强度因子,并对裂纹尖端初始焦散线引起的实验误差作了处理．实验结果与理论值十分接近,表明船舶甲板开口边缘受拉的Ⅰ型裂纹的应力强度因子与甲板中的总纵拉力成正比．     

Solutions of Two-point BVP in Banach Spaces

IntroductionGuoetal.[1]discussedthetwo-pointboundaryvalueproblem(BVP)forordinarydifferentialequationsinBanachspaces,-u″=f(t,u),　t∈I=[0,1]u(0)=u(1)=0andgavesomeconclusions.Usingthemonotoneiterationtechnique,SongFumindiscussedthesameBVP[1]andshoweditsmaximalandminimalsolutions[2].Inmoregeneralboundaryvaluecondi-tions,GuoandSun[3]discussedBVPinreflexiveBanachspacesandmadeseveralconclusions.InthisworkthefollowingBVPinrealBanachspace,E,isconsidered.Lu(-p(t)u′)′ q(t)u=f(t,u),B0uau(0)-…     

Biology of halophilic bacteria,Part II

Archaebacteria (archaea) are comprised of three groups of prokaryotes: extreme halophiles, methanogens and thermoacidophiles (extreme thermophiles). Their membrane phospholipids and glycolipids are derived entirely from a saturated, isopranoid glycerol diether,sn-2,3-diphytanylglycerol (archaeol) and/or its dimer, dibiphytanyldiglyceroltetraether (caldarchaeol). In extreme halophiles, the major phospholipid is the archaeol analogue of phosphatidylglycerolmethylphosphate (PGP-Me); the glycolipids are sulfated and/or unsulfated glycosyl archaeols with diverse carbohydrate structure characteristic of taxons on the generic level. Biosynthesis of these archaeol-derived polar lipids occurs in a multienzyme, membrane-bound system that is absolutely dependent on high salt concentration (4 M). The highly complex biosynthetic pathways involve intermediates containing glycerol ether-linked C₂₀-isoprenyl groups which are reduced to phytanyl groups to give the final saturated polar lipids. In methanogens, polar lipids are derived both from archaeol and caldarchaeol, and thermoacidophiles contain essentially only caldarchaeol-derived polar lipids. The function of these membrane polar lipids in maintaining the stability, fluidity and ionic properties of the cell membrane of extreme halophiles, as well as the evolutionary implications of the archaeol and caldarchaeol-derived structures will be discussed.     

累次成像光学系统模型的建立及应用

分析了物在任意位置且两次以上累次成像这一问题，利用透镜成像的基本公式对之建立了数学模型，并归纳出应用该模型设计光学系统的一般步骤．     

浅谈造成混凝土裂缝的原因及其治理方法

目前混凝土广泛使用于工业与民用建筑工程中，混凝土在施工方法、施工工艺等方面的不当所造成的裂缝，会直接影响整个工程的质量。分析了混凝土裂缝产生的原因，提出了裂缝的治理方法。     

在Powerbuilder中利用API函数实现图片的逐渐放大

通过在Powerbuilder中词用Windows API函数，实现任意图片的逐渐放大功能．     

Cook-Seiford函数的若干推广

用例子指出Cook-seiford函数所得的群排序的不唯一性，并利用计算机模拟实验说明这种情况出现的几率较大，提出Cook-Seiford函数的两种推广：加权的Cook-Seiford函数和基于Minkowski距离的Cook-Seiford函数；解决了Cook-Seiford函数结果不唯一的问题．推广的Cook-Seiford函数还可以用来进行多属性决策．     

半E-凸函数的一些新性质

得出了半E-凸函数的一些新性质。并对它的某些最优化理论中的结果进行了推广．