可转移性

The enhancement pattern of 6 liver metastasis was diverse,including peripheral or entire degree enhancement in the arterial or portal phase with slow or fast wash-out. The 6 cases of hemangioma were enhanced centripetally in portal phase and washed out after several minutes and the other 2 nodule cases with entire enhancement.

结果］14例原发肝癌中10例呈典型表现，为"快进快出"。6例肝转移癌表现多样，动脉期可呈环形或整体增强，肝恶性肿瘤的消退时间早于其他肝脏局灶性病变（P＜0.05），门脉期或延迟期表现为相对低回声。6例肝血管瘤有其特有征象动脉期开始缓慢向心性结节环形增，持续数分钟后才消退。

The typical manifestations of PHC were nodular,irregular and heterogenous enhanced regions in lesion,tumorous vessels could be seen in the arterial phase,the hyperdense regions in the arterial phases were changed to hpodense quickly in the portal phase;The characteristic findings of HCH were well-defined intense mural nodular enhancement in the arterial phase,and centripetally oriented enlargement of this nodular in the portal phase,the density of the nodular in the arterial phase were similar to that of aorta or hepatic arteries.

原发肝癌的典型表现是动脉期病灶内结节状、片状强化，并可见肿瘤血管影，强化部分在静脉期迅速呈低密度影；肝血管瘤的特征性表现为动脉期病灶边缘结节状强化，密度类似于主动脉或肝动脉，静脉期强化结节逐渐向病灶中央扩展；肝转移癌的主要表现为动、静脉期病灶边缘环状强化，中央部分无明显强化，静脉期还可见到"牛眼征"。

A new chiral quaternary ammonium salt 1a was synthesized by the reaction of cinchonine and(2,4,6-)trimethyl benzyl chloride.Etherification between 1a and benzyl bromide,allyl chloride,or methyl give corresponding etherified quaternary ammonium salts 1b,1c,and 1d.

由辛可宁和2，4，6-三甲基苄氯，合成了一种新的手性季铵盐(1a)，并进一步用苄基溴、碘甲烷和烯丙基氯对分子中的羟基进行醚化，得到相转移催化剂1b、1c和1d。

A modified EXtrinsic Information Transfer chart method is proposed. This EXIT chart is adopted as a tool to analyze the convergence behavior and to predict the performance of turbo equalization in additive non-Gaussian impulsive noise channel.

摘要该文提出了一种改进的外信息转移图方法，可用于分析加性非高斯对称稳定分布噪声多径信道条件下Turbo均衡性能，为实际的Turbo均衡系统设计提供预估性能参数。

From the view of human resource theory, the cumulative and the aggregative effects that the investment of human resource has result in the phenomenon of "profit flow-out".

国家助学贷款转移支付是中央政府给省政府的补助，可对具有外溢性的人力资本投资进行适当的调节，能较为有效地克服&利益外溢&。

Transgenic expression of IL-1ra and degree of audiogenic seizure of P77PMC rats were observed after infection with pHSV-IL-1ra virus (〓 virus particles) by i. c. v injection and hippocampus injection. Results show: 1. Overexpression of IL-1ra by pHSV-IL-1ra significantly inhibited seizure attacks of P77PMC rat.

实验结果提示IL-1β可导致神经细胞NMDAR mRNA表达及受体活性增加，从而使其兴奋性增高；脑中内源性IL-1系统的异常很可能是形成P77PMC遗传癫痫易感大鼠惊厥易感性的重要因素之一；我们首次构建并鉴定了pHSV-IL-lra重组质粒，并成功地进行了脑内基因转移，使P77PMC大鼠的惊厥程度明显降低。

Human chorionic gonadotropin is a kind of glycoprotein which is synthesized by placenta tissue and chorionepithelioma. However, it has recently been found that HCG expressed in many non - germinal tumors, and was closely related with the differentiation, infiltration and metastasis of tumors.

人绒毛膜促性腺激素是由胎盘组织和绒毛膜细胞癌产生的一种糖蛋白，近几年发现其可在许多非生殖性肿瘤中出现，并且与肿瘤的分化程度、浸润转移有密切关系。

Results Most of 37 cases located at junctional zone between ectocinerea and alba of cerebrum. Shapes of SBM are multiple, such as node, ring form and cyst-solid node were commonly seen. Most of these were accompanied with marked hydropsia. The degree of hydropsia was related with the site of lesion. Different degree enhancement was showed on enhanced CT in all cases.

结果 单发脑转移瘤病灶多位于大脑灰白质交界区；形态多样，可表现为结节、环形及囊实性不规则形，以结节多见，多伴有明显水肿，水肿程度与解剖部位有关；增强扫描可见不同程度均匀或不均匀强化。

We have performed systematical studies on intrauterine transmission of hepatitis B virus and our studies suggested that HBV may occur through progressive infection of different placental layers until the virus reaches the fetoplacental circulation, which is the named "transplacental cellular traffic" except through placental tears with transfusion of infected maternal blood into the fetal circulation, which is the named "hematogenous transmission".

我室近年来对HBV宫内传播进行了系列研究，发现了胎盘在宫内传播中的作用，并提出了HBV宫内传播机制的假设：除血源性途径外，还可通过HBV在胎盘组织内的&细胞传递&途径，即HBV可以从母体蜕膜细胞通过&逐层转移&至胎儿绒毛毛细血管内皮细胞，导致胎儿感染。

Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.

第二部份以2-呋喃甲胺为起始物，制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体；BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性；Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index， LOI)的难燃性特质，Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion， Low CTE)]均较其他聚氧代氮代苯并环己烷为优；4FP-FBz具有低之介电常数(Dk=2.7)，以其作为降低介电常数之反应型改质剂，与P-FBz混成，证实可有效地降低Poly的介电常数。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。