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By introducing the general notion of nonwandering operator semigroup T and utilizing a basic result in normed linear space,the nonwandering property of T=e~ is investigated with the constructive method.

通过给出一般算子半群T的非游荡性概念，利用赋范空间的一个基本结果和直接的构造法证明了具有变系数的线性发展方程的强连续解半群T=etA在适当的条件下是非游荡的；另外，通过对C-半群T概念的引进，定义了一个无界算子半群etA，进一步证明了这二者关于非游荡性的联系；最后给出了一个无界算子半群etP关于非游荡性理论的刻画，其中P是微分多项式。

In order to study the method and its capability of the borax ceramsite concrete as the layer of accumulation of heat of floor radiant heating,the borax ceramsite concrete was used to substitute for pisolite concrete as the layer of accumulation of heat in the floor radiant heating system during the construction of Lakeside Garden Buildings in Liaohua District.

目的研究硼泥陶粒混凝土作为低温热水地板辐射供暖系统蓄热层的作法及其性能。方法辽化湖畔花园小区住宅楼工程中，用硼泥陶粒混凝土代替豆石混凝土作低温热水地板辐射供暖系统蓄热层，取暖期内对试验工程进行温度监测实验。结果试验工程混凝土试块强度平均值为27.5 MPa，合格率为100%，厚度均在允许偏差内，合格率100%；外观鉴定混凝土表面无裂缝，并根据温度监测结果画出了取暖期内每天温度随时间变化的曲线图。结论用硼泥陶粒混凝土作低温热水地板辐射供暖系统的蓄热层，与用豆石混凝土相比，减轻了建筑物自重、减缓了传热速度、增强了房间的热稳定性

Nano-Fe_3O_4 can induce DNA single-strand breaks without significancy and can not induce micronuclei formation and percentage of apoptosis. Nano-Fe_3O_4 can aggravate the effect of CdCl2 on DNA single-strand breaks and chromosome damage in HepG2 cells. They showed synergistic effects on DNA single-strand breaks after the data were statistic analyzed.

结果发现CdCl2能引起DNA断裂损伤、微核率的增加和细胞凋亡率的增加；nano-Fe_3O_4能引起DNA断裂损伤增加，但无显著意义，未引起微核率和细胞凋亡率的增加；nano-Fe_3O_4能加重CdCl2的对细胞DNA断裂损伤和染色体损伤，且二者联合作用对DNA断裂损伤的结果经统计分析认为有协同作用。

In this paper, we mainly study the adjacency spectrum of simple connected undirected graphs. Some results will be given in this thesis.

本文中分两个部分集中反映了作者三年来围绕一般简单连通无向图的邻接谱的界所取得的主要结果，包括两类特殊图类的邻接谱，具体结果如下： 1。

And There was no serious complication;②In the course ofinterventional therapy, Direct portal vein angiography demonstrated vena coronaria ventriculi(100%)andgastricveins(65.26%)andvenagastricaposterior38.43%, Angiography demonstrated venacoronariaventriculi communicate esophagus varicose veins, gastric veins and vena gastrica posterior communicategastric varicose veins. vena coronaria ventriculi had only a small percentage of double vein, about30.57%. The sites of vena coronaria ventriculi arising from the portal vein, splenic vein, portosplenic junction, were found in 52.06%、27.39%、20.55% respectively.③12 extrahepaticprotosystemic shunts were found in these patients. Include gastro-nephrosshuntof 3 cases, 7 caseswere splenetic- nephros shunt and 2 cases shown recanalization of umbilical vein .④The averageportal pressure before and after the procedure were 3.87±1.82kPa and 3.64±1.14kPa in 73patients, but to the time of rebleeding, it was 3.96±0.23kPa in the 11 cases.⑤There werethree kinds of variceal outcome: disappearance (54,low degree (19).⑥Spearman logisticanalyse and ANOVAtest shown liver function class, variceal degree of the splenic necrosis area,the blood direction in portal vein before operation and remain small collateral routes were thesignificant factors concerning outcome of varices.⑦The bleeding volume and portalhypertensive gastropathy are main risk factors of rebleeding.⑧The course of livercirrhosis is the risk factor of survival and extrahepatic portosystemic shunt , fine varices are thebeneficial factors to survival.⑨During all cases'followed-up data, the 1, 2, 3, 4, 5 yearcumulative survival rates and rebleeding rates were 17.81%, 28.77%, 38.36%, 43.84%, 47.95%and93.15%,91.78%,86.30%,83.56%,80.82%respectively. Conclusion The interventional disconnection treatment for liver cirrhosis and portalhypertension was designed suitability. It rapidlycontrol bleeding,butpressure of portal vein was notobvious high, perfusion was not low .it was compared with surgery therapeutic that interventionaldisconnection treatment was safe and had a significant clinical effect to hemorrhage and preventfrom rebleeding.

结果：①术后一过性发热62例(84.9%)，腹痛腹胀48例(65.8%)是介入断流术常见的并发症，未发生严重并发症；②门静脉造影显示胃冠状静脉、胃短静脉和胃后静脉的曲张分流的出现率是100%、65.26%和38.34%；显示食管静脉曲张主要由胃冠状静脉供血，胃静脉曲张主要由胃短静脉和胃后静脉供血；胃冠状静脉大多数为单支，少数为双支，其双支的出现率分别为30.57%；胃冠状静脉开口于门静脉主干的为52.06%，开口于脾静脉主干的为27.39%和开口于门脾静脉交汇处的为20.55%；③发现胃肾分流3例，脾肾分流7例、腹膜后门腔静脉分流2例，以及CTA检查发现脐静脉开放者2例；④73例患者介入断流术前和术后平均自由门静脉压力分别为3.87±1.82kpa和3.64±1.14kpa，前后比较存在显著性差异；11例再次介入手术患者的术前、术后和复发后的自由门静脉压力分别为4.02±0.24kpa、3.82±0.25kpa和3.93±0.23kpa ，前后比较发现首次术前与术后存在显著性差异，首次术前和复发出血术前门静脉压力比较无显著性差异；⑤介入术后复查曲张静脉转归基本消失54例，轻度19例；⑥Spearman相关分析和Logistic多因素回归分析，肝功能分级、静脉曲张程度、门脉血流方向和残存小侧支四个因素对曲张静脉转归有影响；Spearman相关分析和Logistic多因素回归分析门脉高压性胃病和出血量等因素对复发出血时间有影响；⑦COX回归分析，门体分流和曲张静脉转归两个因素对术后生存有影响；⑧术后随访6-70月，1、2、3、4、5年的累计复发出血率和累计生存率分别为17.81%、28.77%、38.36%、43.84%、47.95%和93.15%、91.78%、86.30%、83.56%、80.82%；结论：介入断流术治疗门脉高压食管胃底静脉曲张有独特的优点，可以快速直接控制曲张静脉出血而门静脉压力无显著增高，保证了肝脏灌注；与外科分流术相比适应证广、损伤轻、术后恢复快，不易遗漏曲张静脉；肝功能分级、曲张静脉程度、门脉血流方向和残存侧支血管对食管胃曲张静脉转归有影响；门脉高压性胃病对复发出血时间有影响；门体分流和曲张静脉转归对生存时间有影响。

Investigation was carried on tweenty-four sample stands of four districts in Nanning City, including (1) college area: the Subtropical Conservative Rainforest, the omni-tree Woods, the Pinus massoniana Woods in Guangxi Ethnic College, the TaoLi Garden, the Centre Garden, the Nurture Garden, the sod Garden, the Eucalptus woods, the Osmanthus fragrans Woods and the Livistona chinensis green Belt in Guangxi University;(2) residence: the Swiss Villa"s two greening sample standsand the Wenhua Villa"s three greening sample stands;(3) commercial streets: theXingming Road ,whose prime street tree is Dracontomelon duperreanum , the Yuanhu Road, whose prime street tree is Saraca chinensis Merr.et Chum, the Xingzhu Road, whose prime street tree is Artocarpus nitidus Tree, subsp.

住宅区：文华园的3个样地和瑞士花园的2个样地。主要交通干道：大学路的3个样地和民族大道的2个样地。商业区：以人面子为主要街道树的新民路，以红桂木为主要行道树的新竹路，以中国无忧花为主要行道树的圆湖路。调查结果表明：在南宁市四个功能区的24个绿化样地，主要的绿化乔木有 45种，前 10种依次是：人面子、假摈梆、垂叶榕、桂花、扁桃、蒲葵、阴香、马尾松、芒果和中国无忧花，主要的绿化灌木有24种，前8种依次是九里香、尖叶木犀揽、黄叶假连翘、扶桑、花叶朱蕉、紫蒲、短穗鱼尾葵和大花美人蕉，这些植物基本上代表了本市绿化植物的主体。

Results The main biochemic al items such as pH,osmole,electrode slope and linear scope between our develope d internal standard A and the primary internal standard A in NOVA 16 analyzer re agent pack were in good accordance.

结果：自配内标准A液与原装内标准A液的主要理化指标：pH 、渗透压、电极斜率、线性范围均一致，自配内标准A液的精密度与原装内标准A液所测结果之间的相关性(r＝0.950～1.000)及自配A液的批内(P＞0.05)、批间(P＞0 。05)稳定性较好，长期使用对电极无损害。

Finally,the following conclusions are gained.(1)The RF irradiation has effect on the relaxation course in a homonuclear system to some extent.(2)The...

研究结果表明：1射频场的照射对同核体系的弛豫有一定程度的影响。2 在射频场的照射下，同核体系的纵向弛豫时间T1 小于无射频场时的T1 ，而横向弛豫时间T2 大于无射频场时的T2 。3纵向弛豫时间T1 随射频场的增强而逐渐减小，横向弛豫时间T2 随射频场的增强而逐渐增大。

Methods:during the year 2003 to 2006,3298 patients with vaginal delivery received 2 kinds of skin preparations.retrospective study was conducted to investigate the effect of skin preparation methods on the healing of mediolateral episiotomy.rerults:there was no different effect on the wound healing of mediolateral episiotomy between the 2 kinds of skin preparation.conclusions:non-shaving method has no adverse effect on the sterilization of operation field in vaginal delivery.moreover it can save the time of nuring,lower the costs,ease the uncomfortable feeling .therefore,we consider the non-shaving method has advantage over the shaving one.the former is simple and effective which is an ideal way to simplify nursery procedure and spare nursery resource.

收集我院2003年至2006年间共3298例阴道分娩的产妇采用两种不同的备皮方法，观察两种备皮方法对会阴侧切伤口的影响进行回顾性对比分析。结果：两种备皮方法对会阴侧切伤口的愈合影响无明显差异。结论：不剃毛的会阴备皮方法对阴道分娩的手术野消毒无不良影响，并且能够节省护理操作时间、降低产妇费用、减轻产妇不适，所以不剃毛的备皮方法优于剃毛的备皮方法，不剃毛的备皮方式简单而有效，是简化护理工作程序及节省护理人力资源的理想办法。

By analyzing the strange behaviors of massless integrations in dimensional regularisation, It was proposed that for a special kind integration, which is sero mathmatically, should not be simply treated as sero physically, as a fact it is the difference of the same magnitude ultraviolet divergence and infrared divergence.

通过研究维数正规化中的无质量积分的奇妙特性，本文指出对一种特殊类型的动量积分，从数学上看DR给出的结果为零，但物理上不能把结果简单处理为零，而是反映了大小相等的紫外和红外发散之差。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。