成对地

Results: GINaTK retroviral vector containing HSV-tk was constructed and transduced into PA317 retrovirus packaging cell by lipofectin (named PA317TK). Rat glioma cell C6 was infected by the deficiency recombinant retrovirus (named C6TK). The sensitivity of C6TK cells to GCV or ACV increased 450 or 10 times than that of C6 cells respectively. Rat C6 glioma model was successfully built, and SD rats inoculated intracerebrally C6TK cells had normal gliomas. The average survival periods of the rats were about 15 days. However, after treated with ACV, the growth of C6TK tumors obviously regressed, and the survival periods extended to 57.8±8.1 days, especially in rats injected with mixed PA317TK and C6 cells or in situ PA317TK cells, which the tumors nearly disappeared after ACV administration and the survival periods extended to over 120 or 71.4±36.1 days respectively, P ＜0.001.

结果：构建了带有HSV-tk基因的反转录病毒载体GINaTK，应用脂质体转移方法将GINaTK导入反转录病毒包装细胞PA317，成为产病毒细胞PA317TK，用带有HSV-tk基因的复制缺陷型反转录病毒感染C6细胞，命名为C6TK细胞，对GCV和ACV的敏感性分别高于亲本450倍和10倍；成功地建立了大鼠脑胶质瘤模型，并证实转染细胞C6TK的成瘤效应未改变，存活期约为15天；而经ACV治疗后，含有C6TK细胞的肿瘤生长明显被抑制，大鼠生存期延长为57.8±8.07天，尤其是采用PA317TK细胞混和治疗组和原位治疗组，肿瘤基本消失，大鼠生存期显著延长，混和治疗组存活120天以上，原位治疗组存活至71.4±36.1天。t检验，P值均小于0.001。

When the target maneuvers, and if the target is taken as reference, the radar will form an inverse synthetic aperture a...

当目标作机动飞行时，以目标作固定基准，雷达等效地在空间形成流形复杂的逆合成孔径，对这种情况下成像的问题进行了系统的研究

When target maneuvers, and if we take target as reference, radar will form a complicated inverse synthetic aperture manifold equivalently in space, this chapter studies the imaging problem systematically in this situation.

当目标作机动飞行时，以目标作固定基准，雷达等效地在空间形成流形复杂的逆合成孔径，本第二章是对这种情况下成像原理进行了系统的研究。

At the same time, considering the jumpiness or incline caused inaccuracy and pretermission when the capsule moving ahead, two couples of infrared ray and electron transducer were designed to detect the light signal of the corresponding parts of the capsule. After the addition operation compensation and differential coefficient, turning the little different simulation signals of the body and cap of the capsule into digital signals for detection. It is more accurate for detection and stable to the disturbance. Step electromotor was used for the capsules direction turning which solved this problem efficiently. The capsules were ranged in order according to their colors with the cap at the same direction.

同时考虑到胶囊行进过程中跳动、倾斜及随机干扰造成的误判、漏判，设计了两对红外光电传感器用以同时检测胶囊上下两个边缘部位的光信号，两个检测信号经加法运算补偿、微分运算处理，将体现胶囊的帽、体微小几何尺寸差别特征的弱模拟信号直接转变成数字量检测，提高了检测的准确率及抗干扰能力，并由步进电机控制胶囊掉头，有效地解决了胶囊体、帽的位置调整，分色调头排列，达到帽、体一致。

Based on the analyses of bio-markers and geochemical data, the abundance of organic matter, the construction of biological source, sedimentary environment, maturity and the oil-generating potential of the source rocks in the lower Cretaceous Duoba and Langshan formations in the Cuoqin basin have been studied.

应用生物标志物分析技术，结合其它地化资料，对青藏高原措勤盆地下白垩统多巴组、郎山组烃源岩，进行了有机质的丰度、生源构成、沉积环境、成熟度及成油潜力等方面的初步研究。

In addition, a bistatic SAR linear velocity bunching transfer function is obtained in the linear parameter regime.

通过仿真分析，定性地给出载机观测条件对双站SAR海浪线性成像范围大小的影响。

The results show that the sandstone reservoirs with high porosity and permeability are mainly composed of coarse-grained lithic quartz sandstone and quartz sandstone with relatively well-preserved primary intergranular pores, relatively large median radius and average pore throat radius, and relatively low displacement pressure.

结果表明：组成高孔、渗储层的砂岩类型主要是粗粒的岩屑石英砂岩和石英砂岩，其较多地保存了原生粒间孔，具有较高的中值半径和平均喉道半径以及较低的排驱压力；高能环境下有利的沉积微相和成岩早期包壳状胶结物对原生粒间孔隙的保护作用是形成高孔、渗储层的基础条件。

In the light of logical formula, an automatic circuit will be devised to control the energy in the refrigeration system.

用布尔代数可以完整地表达制冷机组提供冷量与其负载对冷量需求的阶梯性的内在的逻辑关系，这种关系可以用具有同样逻辑功能的电路来实现，将这个电路应用到制冷系统中就成了制冷系统能量梯级控制电路。

Both LDPC codes and OFDM technology are studied in this paper. The working and the results obtained are summarized as follow:1. The definition of LDPC codes and its coding/decoding ideas are systematically summarized, a general algorithm of changing any parity-check matrix to lower triangular form, which is suitable for quick encoding, is given out, along with a girth checking algorithm. Absolutely random LDPC codes construction is improved, a new half random construction of LDPC codes with linear time coding and no 4-cycles is brought out.

系统地阐述了低密度校验码的定义及编译码原理，提出了一种将任何校验矩阵变换成适于快速编码的近似下三角形式的通用算法及一种围长检测算法，对完全随机的校验矩阵构造法进行了改进，提出了一类消除4环且可近似线性编码的校验矩阵半随机构造法，仿真表明，在高编码效率情况下，改进后的半随机构造法，其性能稍优于完全随机构造法，并可以线性时间编码，因此更适合实际应用。

Why, maidy'(he frequently, with unconscious irony, gave her this pet name), 'the prettiest milker I've got in my dairy; you mustn't get so fagged as this at the first breath of summer weather, or we shall be finely put to for want of 'ee by dog-days, shan't we, Mr Clare?

"哟，我的大小姐"（他经常这样亲切地称呼她，却不知道对她正是一种讽刺），"你是我们奶牛场最漂亮的挤奶姑娘了；夏天的天气才刚刚开始，你就困乏成这个样子，要是到了三伏天，你就不能在这儿住了，那时候我们就遭殃了。是不是这样的，克莱尔先生？"

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。