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Long-term aerobic exercise can effectively prevent hepatocyte number from decreasing accompanying with aging. Among the groups of aged, results showed that rats of 1-hour and 2hours group whose recovery function of hepatocyte apoptosis were of most significant. The increasing number of hepatocyte might be one of the cytological mechanisms of how aerobic exercise delays cell aging. Further researches on the phenomenon of the anomalous change of the hepatocyte apoptosis ratio among the youth groups are needed expectably.

肝细胞凋亡存在随增龄明显下降的趋势，这对维持肝细胞数量或缓解增龄过程中肝细胞数目丢失具有十分重要的意义；长期有氧运动可以有效的阻止肝细胞凋亡率在增龄过程中下降的趋势；在老年前期组中，训练1小时和2小时组对肝细胞凋亡能力的恢复作用最明显；有氧运动促进肝细胞凋亡能力的提高可能就是有氧运动延缓细胞增龄发生和发展的重要细胞学机制之一。

objective:to investigate the expression and significance of rb in the occurrence, development and regression of infantile hemangiomas.methods:the expression of rb was examined in the proliferative stage and catagen of human hemangiomas and normal skin tissues by using immunohistochemical technique.immunohistochemical technique for factorⅷ-related antigen was used to prove that the cells which expressed rb were endothelium.image analysis system was applied to measure the expression level of rb at different stages of hemangiomas and in normal skin tissues.results:the expression of rb was significantly lower in proliferating hemangiomas than that in involuting hemangomas(p.05).conclusion:rb might play an important role in the regression of human hemangioma endothelial cells and anti-angiogenesis.

目的：探讨rb蛋白在血管瘤发生、发展及退化过程中的表达状况及其意义。方法：采用免疫组织化学方法检测人皮肤血管瘤增生期、退化期及正常皮肤组织中rb的表达水平，并结合第ⅷ因子相关抗原的免疫组织化学染色证实表达rb的细胞是血管内皮细胞。利用计算机图像分析技术测量不同时期血管瘤组织和正常皮肤组织rb表达的积分光密度和面积。结果：增生期血管瘤内皮细胞rb表达水平低于退化期，差异有显著性（p.05），退化期血管瘤内皮细胞rb表达水平与正常皮肤组织相比，差异有显著性（p.05）。结论：rb通过抑制血管瘤内皮细胞增殖和血管生成而在血管瘤的退化过程中起重要作用。

Our investigation has shown that:ⅰ there was an interference effect between the incident and reflected matter waves as all the atoms in BECs were coherent;ⅱ considering the rotation of a vortex, the nonuniform velocity distribution along the surface would play an important role in the quantum reflection process. For example, they would change the characteristics of the interference fringes between the incident and reflected matter waves;ⅲ the reflected vortex became unstable for sufficiently low incident velocity or strong interaction. This sort of instability physically originated from dynamics excitations induced by the atomic interaction in the quantum reflection process.

我们的研究表明：ⅰ由于相干性质的存在，在涡旋与固体表面相互作用的过程中，被固体表面反射回去的部分与正在入射的部分在空间叠加后一定会产生清晰的干涉条纹；ⅱ由于各向异性的速度分布，涡旋的反射率也呈各向异性，因此反射回来的部分与入射部分形成的干涉条纹宽度以及疏密程度与入射速度以及速度各向异性的程度有关；ⅲ由于玻色凝聚体中原子间相互作用的存在，反射过程中凝聚体会产生激发，破坏涡旋的结构，使得反射后的涡旋不再是中心对称。

The comparation of the treatment between the microcosms with plants and without plants was also considered.

结果表明：(1)植物生长过程中，植物高度能反映污水处理效果总体仁的变化；(2)在植物的生长过程中，各人工湿地系统污水处理能力总体上持续增强，各水质指标pH、DO、TN、NH3-N、NO3-N、TP和COD等均呈下降趋势，其中TP和COD呈逐步下降，pH、DO、TN、NH3-N、NO3-N则呈现锯齿形波动，但总体上仍是下降过程；(3)植物系统氮处理能力好于无植物沙滤系统，而对磷TP和COD的去除则恰好相反；(4)不同植物对人工湿地污水的处理效果影响不明显。

B for their personal, property damage and liability will be borne by the economic self-B; 6.B in the service process, the government should abide by the state's environmental laws and regulations.prevent and reduce service to the process of environmental pollution; 7, B car buyer should ensure that the number Exceptionally,B should promptly notify the buyer, the two sides resolved, in accordance with the obligation of the two parties request the deployment of B vehicles.ensure the successful completion of tasks; 9.B subordinated obligation of the two parties will change in accordance with the needs of midnight make off line or location (under the premise of not violating the traffic law).obey buyer; 10, the leasing period, while B causes vehicles encountered administrative punishment.Punishment from B commitments; 11, the leasing period,B or B reasons for the failure of transport provided at B should be restored within half an hour, could not be saved.contractual ties with timely passenger vehicles grades, from B to bear the additional costs.

乙方自身的人身、财产损害及应承担的经济赔偿责任概由乙方自行负责； 6、乙方在服务过程中，应遵守国家环境方面的相关法律法规，避免和减少服务过程中对环境的污染； 7、乙方应保证甲方用车数量，如遇特殊情况，乙方应及时通知甲方，双方协商解决，乙方有义务根据甲方要求另行调派车辆，保证任务顺利完成； 9、乙方有义务服从甲方根据工作需要零时性改变行驶线路或上下客地点（在不违反交通法的前提下），服从甲方安排； 10、租用期间，因乙方原因导致车辆在途中遇行政处罚的，处罚费用由乙方承担； 11、租用期间，因乙方的原因或乙方提供的交通工具出现故障时乙方应在半小时内修复，不能修复的，及时联系合同约定同档次车辆转客，产生的额外费用由乙方承担。

During the moisture adsorption process from oven-dry state to the equilibrium state in 20℃, 60％RH environment, the activation enthalpy of adsorbed water during reorientation increases linearly with adsorption time.

从绝干状态→20℃，60％RH平衡态的水分吸着过程中，吸着水分子在回转取向过程中的活化焓随着吸湿时间呈线性增加，这说明一个吸着水分子与周围木材吸着点之间的氢键结合数的平均值随着吸湿过程的进行逐渐增多，直至达到平衡状态。

On this paper, the pulse electrochemical compound finishing technology parameters which influence the finishing surface roughness was paid attention to, such parameters include the pulse frequency, the duty factor, the peak voltage, the finishing time and so on. Then basic craft rule of two kinds of mold material in finishing process were obtained, and each kind of parameter in this craft was optimized by means of the orthogonal experiments.

在此基础上，重点考察了脉冲电化学复合光整加工过程中各工艺参数对光整后表面粗糙度的影响，如：脉冲频率、占空比、峰值电压、光整时间等，由此获得了这两种模具材料在整个过程中的基本工艺规律，并通过正交试验对光整加工中的各参数进行优化。

NiRs are divided into two different types based on their prosthetic groups, namely heme-containing nitrite reductases (cd1-NiRs) and Copper-containing nitrite reductases.

Cu-NiRs呈三聚体结构，每个单体都含有两种类型的铜原子，它们在酶催化过程中起着传递电子的重要作用。在催化过程中，Cu-NiRs中部分残基的结构变化有利于催化反应的进行。

The metamorphic and mobile robot proceeds on flat road and slope of twenty degree and it changes motive postures meantime, then the torques of changing postures and proceeding are measured and the motive parameters are abstained through feedback measure while the arms and pedrails of the robot change their postures.

论文中通过对变形机器人在平坦路面上运动和进行20度斜坡的爬坡运动，以及在运动过程中各种姿态的变换的仿真，得出了运动过程中姿态变换和运动每个时刻所受到的力矩大小，通过反馈测量得出了姿态变换时加长臂和履带的运动参数。

As far as oxidation is was concerned, the major concern lied with the fatty acids in the system. The oxidation of most of the fatty acids was attributed to the activity of lipoxygenase in barley and malt although other oxidations also exist such as auto oxidation (non-enzymatic), hydroperoxide decomposition and so on. This enzyme is was partly responsible for the development of the 'stale','cardboardy' flavour in beer during storage, and has been a great concern for brewers and the brewing industry.

在制麦和糖化过程中，尽管存在酶的自氧化和氢过氧化物的降解等，但绝大部分脂肪酸的氧化则是由大麦和麦芽中的脂肪酸氧化酶引起的，该酶对于在啤酒存储过程中纸板味的出现起了部分作用，因此引起了酿造者和啤酒企业的极大重视。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。