可饱和的

Vesic's solutions to cavity expansion that include cylindrical cavity expansion and spherical cavity expansion are introduced. Then cylindrical cavity expansion theory is applied to study compaction effect of pile driving in saturated soil. Based on the results of conventional triaxial tests, a trilinear curve model is used to simulate stress-strain curve of strain-softening materials. Meanwhile, trilinear curves are also used to simulate curves of volumetric strain, minor principal strain and major principal strain. By using elasto-plastic theory, analytical solutions to cylindrical cavity expansion in strain-softening soil are presented. According to the mechanism of statically pressed pile driving, compaction effect of pile tip can be viewed as hemispheric cavity expansion. Therefore spherical cavity expansion theory is applied to obtain the solutions to stress, strain, displacement fields and final pressure. Resistance force of pile tip is calculated to estimate static pressure.

介绍了Vesic关于圆孔扩张问题的解答，其中包括柱形孔扩张问题和球形孔扩张问题，并应用柱形孔扩张理论分析了饱和软土中的沉桩挤土效应问题；在常规三轴试验成果的基础上，采用三折线模型模拟具有应变软化性质的岩土材料的应力应变关系曲线，分析了在应变软化土体中沉桩时桩周土的位移场、应力场和应变场的变化，得到了解析解答；分析了静压桩的沉桩机理，并利用球形孔扩张理论，视桩端处的挤土为半个球形孔的扩张，分析了桩端处土的位移场、应力场和应变场的变化，并根据最终扩张压力计算出沉桩时的桩端阻力，可作为压桩力的估算。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

Oil and polyol firstly hydrolyze, and then react with maleic anhydride to give semi ester, the residual maleic anhydride hydrolyzing to give maleic acid, finally are adducted with DCPD. The result of experiment shows that the synthesized resin is of perfect air drying performance and improved flexibility and anti-greening because of the use of oil, meetin...

试验结果表明，油与多元醇在210～220℃下先醇解，然后与顺酐反应形成半酯，剩余顺酐水解成顺丁烯二酸，然后与DCPD加成，合成的树脂具有优良的空干性；同时油的使用极大地提高了涂膜的柔韧性和抗绿化性，得到的树脂性能上可满足涂料用不饱和聚酯树脂的要求。

The structure and configuration did not devastated while the hematite hollow particles were deoxidizing to iron hollow particles at 500℃ in hydrogen.

壳层厚度太厚、过快和过慢的升温速率都不利于得到空心结构；500℃氢气气氛还原不改变空心粒子的形貌；空心粒子的粒径取决于聚合物模板粒子的大小，壳层厚度取决于包裹层厚度；空心铁粒子的饱和磁化强度高达到95.26 emu/g，具有较好的抗氧化能力，其磁能积可增大到1.46×103 J/m3，有利于以磁损耗为主要吸波机制的铁磁性空心粒子在吸波材料领域的应用。

The CoFe2O4/TiO2 magnetic nano-photocatalysts has fairly good magnetic property. The X-ray diffraction, transmission electron microscopy and ultraviolet-visible technique were used to analyze the phase structure, size and spectrum response scope of the samples. The XRD indicated the anatase TiO2 was formed when TCF modified by plasma. The size of CoFe2O4 particles was about 20 nm. The diameter of CoFe2O4/TiO2 particles is in the range of 30~40 nm. So the shell of TiO2 enwraps closely around the core and the thickness is in the range of 10~20 nm.

运用VSM技术对样品磁性能进行研究，结果表明：等离子体修饰后的复合材料仍具有较高的饱和磁化强度，可在外加磁场作用下实现催化剂在水中的分离与回收；样品的XRD、TEM和UV-Vis分析测试结果表明：等离子体修饰后的复合材料有锐钛矿型TiO2存在；TEM谱图显示磁核CoFe2O4的平均粒径约为20 nm，TCF复合粒子的粒径约为30~40 nm，TiO2包覆层的厚度为10~20 nm。

Special margarines are prepared in response to medical research, which implies a possible superiority for these types of margarines, especially for persons prone to atherosclerotic conditions.

增加多不饱和脂的用量可制成专用的人造奶油。这类专用的人造奶油已经根据医学研究的要求生产出来了。医学研究表明，这种特殊形式的人造奶油可能有好处，尤其对于动脉粥样硬化病倾向的人更有益。

Special margarines are prepared in response to medical research, which implies a possible superiority for these types of margarines, especially for persons prone to atherosclerotic conditions.

增加多不饱和脂的用量可制成专用的人造奶油。这类专用的人造奶油已经根据医学研究的要求生产出来了。医学研究表明，这种非凡形式的人造奶油可能有好处，尤其对于动脉粥样硬化病倾向的人更有益。

Special margarines are prepared in response tomedical research, which implies a possible superiority for these typesof margarines, especially for persons prone to atheroscleroticconditions.

增加多不饱和脂的用量可制成专用的人造奶油。这类专用的人造奶油已经根据医学研究的要求生产出来了。医学研究表明，这种特殊形式的人造奶油可能有好处，尤其对于动脉粥样硬化病倾向的人更有益。

Ecial margarines are prepared in re o e to medical research, which implies a po ible superiority for these types of margarines, e ecially for perso prone to atherosclerotic conditio .

增加多不饱和脂的用量可制成专用的人造奶油。这类专用的人造奶油已经根据医学研究的要求生产出来了。医学研究表明，这种特殊形式的人造奶油可能有好处，尤其对于动脉粥样硬化病倾向的人更有益。

The performances of Kodok 9740, Kodak 9860, pentame-thylidyne dye and two new dyes HIE 1301, and HIR 1302 are compared by the intensity and time-resolution properties of signal waves, and the output characteristics of the laser by using these dyes in an active-passive mode-looked Nd3+:YAG laser are reported.

本文报道了几种可用于钕激光锁模的快速饱和吸收体中ps光脉冲的简并四波混频，利用信号光波的强度和时间分辩特性，比较了Kodak 9740，9860、五甲川和两种新染料HIR1301，HIR1302的性能，首次给出了新染料的弛豫时间，并比较了这些染料直接用于主被动锁模激光器时输出光脉冲的性能。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐