多相性

What differ from that of the researchers in the past is the consideration of the direction of Hopf bifurcation with Dirichlet boundary condition , that is, the conditions when the Hopf bifurcation periodic solutions are orbitally asymptotically stable with asymptotic phase.Our basic idea come from the results given by Tang[30]. We adopt the method used by Hassard in the Hopf bifurcation theorem in [24], which is to judge the existence and the direction of Hopf bifurcation, and the stability of the Hopf bifurcation periodic solutions.

与以前的研究者不同的是，本文不仅讨论了在Dirichlet边界条件下系统的Hopf分支在以扩散系数为分支参数的情况下的存在性和分支周期解的空间非齐次性，而且更多的关注了系统在Dirichlet边界条件下Hopf分支解的稳定性及Hopf分支的方向，也即系统定态解在何种条件下，当分支参数如何变化时产生Hopf分支且分支周期解是带渐近位相轨道渐近稳定的。

Since most of the large molecules containing phosphorus element have double bonds, it is necessary to consider the special structures of double bonds in order to deal with these large systems more accurately. So, based on density functional theory and electronegativity equalization principle, applying a general atom-bond electronegativity equalization method , using separated program, through regression and least-squares optimization , the parameters of atoms and bonds in molecules are determined . By these parameters , the charge distributions and the energy of some molecules containing phosphorus element, especial the fragment of DNA, RNA, are calculated . The results are quite good.

由于这些含磷生物大分子体系都含有双键，为了明确的处理双键，进而更准确的解释带有双键和共轭双键的含磷生物大分子结构与性质的关系，我们以密度泛函理论~([1-4])和电负性均衡原理~([5-9])为基础，应用和开发原子-键电负性均衡方法中的σπ模型，利用最小二乘法，拟合确定了一些分子（含碳、氮、氧、氢以及磷等原子）的各种类型原子及化学键区域的参数，并利用上述参数计算了一些多聚核苷酸的电荷分布以及分子的总能量，进行了讨论，得到的结果可以和从头算相媲美。

Starting with the need to make effective use of limited resources and to conserve the global environment, challenges to be addressed are numerous. Taisei Kogyo is highly acclaimed by society as "Taisei Kogyo the Technical Company" by meeting the needs of the industry by using its "product appeal" and "expertise" for meeting a wide range of applications ranging from large plants to amusement facilities to production lines for information technology equipment. The company does so by using its accumulated know-how and experiences in an attempt to contribute to society as a manufacturer specializing in oil filters and coolers. With our new management policy expressed in the form of the slogan "Speed, Smile, and Communication," Taisei Kogyo aims to produce global products linked closely to the market needs under its production policy "Do our best for all customers" by having all its employees work as one with a customer focus.

产品系列： SFN系列 SFT系列 SFG系列 VN系列 ISH系列 LND系列 LN系列 351系列 352系列 UL系列 UM系列 UH系列 SH系列 GF系列 GC系列 4201系列 TL系列 LCN系列 AK系列 CFK系列 TRF系列 CS系列 CF系列 107系列 AP系列 FA系列 FU系列日本大生是日本重工业集团公司，日本大生的过滤器应用在工业的各个领域，优良的品质和广泛的互换性使日本大生成为许多企业的首选品牌过滤器●压力过滤器●回油过滤器●吸油过滤器●空气过滤器及污染显示器滤芯过滤精度：1μm～100μm过滤面积：420cm2～316800cm2过滤比：β值大于216材质：玻璃纤维、纸质纤维、金属织网滤芯符合国际标准● ISO2941 滤芯抗破裂试验● ISO2942 滤芯结构完整性检验● ISO2943 滤材与液体相客性检验● ISO3723 滤芯额定轴向载荷检验● ISO3724 流量疲劳特性曲线● ISO3968 流量特性曲线● ISO4572 多次通过试验

The question of searching characteristic points or straight lines on moving rigid body is decomposed into two relatively independent sub-questions. The first one is to evaluate the characteristic of points and straight lines on moving rigid body, whose mathematics model is a kind of special non-differential max-mini optimal problem with inequality constraints. By the method of Saddle-point Programming and maximum entropy, the problem can be transformed as a differential optimal problem with single objective. The second oner is to search approximative character points or straight lines on moving rigid body within design space, whose mathematic model is nonlinear and non-differential problem with multiple constraints.

本文将在运动刚体上寻找特征点或直线的优化问题分解为两个相对独立的子问题，一是对运动刚体上点或直线的特征性评定，其实质是平面曲线的圆度或直线度的评定问题，优化模型是以最大误差为最小作为优化目标的约束不可微的优化问题，本文采用鞍点规划和极大熵方法，将其转化为单目标可微优化模型；二是在设计空间内，寻找运动刚体上特征性评定指标最小的近似特征点或直线，其优化模型是非线性、多约束的不可微优化问题，本文提出用遗传算法和BFGS局部搜索法相结合来求解。

The petrophysical properties reflect reservoir heterogeneity by integration of well testing with reservoir performance are acquired by means of geostatistics , multi-parameter cluster analysis , neural network technique , a set of method of quantitative division and estimation to reservoir quality unit in carbonate pools of fracture and vug type is explored , the estimated parameter for different unit is acquired. which lead to better the understanding of reservoir behavior and heterogeneity.

以地质统计学技术、神经网络技术和多参数聚类分析技术为手段，利用试井资料及其它开发动态资料，动静态资料相结合，研究和求取了反映岩溶储层非质性的物性参数；研究和探索了一套缝洞型碳酸盐岩储层开发储集质量单元的定量划分和评价方法，建立了不同单元的储层质量评价参数，深化了对缝洞型碳酸盐岩储层非均质性的认识。

And the expression capacity of the information entropy to ERD/ERS was evaluated by mutual information.The phase sychronization was...

结果表明，时频域信息熵与频带能量具有一致的变化时程；时频域信息熵具有比频带能量更好的分离性，是事件相关去同步/同步的一个敏感的量化参数；时频域信息熵结合相同步相干性指数，能够提供更多反映大脑意识任务的状态信息。

First, her analysis is multi-perspective, including plain introductory essays, expositive articles combining knowledge and learning, and research papers of pronounced science; second, her explanat...

她的阐释是多维的，有内容浅显的介绍性短文，也有知识性与学术性相融的阐发性文章，还有学术性很强的研究性论文。

Results ①The most common lesions were the extragastric compressions caused by spleen, which accounted for 54.74%, followed by the enlarged gallblodder, hepatic cyst and carcinoma in the left lobe, left kidney, pancreatic cystic adenoma and pancreatic cyst.②The diagnostic accurancy of EUS was 100%, which was higher than that of USP.③Most of the lesions, benign or malignant, had normal structure of the gastric wall.④Splenomegaly only accounted for 38.46% in the lesions caused by the compression of spleen, which were slightly to moderately enlarged.⑤The location of the lesion was usually related to the organ which caused the extragastric compression.

结果 ①胃外压性隆起中脾脏压迫最多见，占54.74%，其余为肿大胆囊、肝右叶囊肿、肝左叶癌、左肾、胰腺囊腺瘤和胰腺囊肿；②EUS对胃外压性隆起的诊断正确率达100%，其对外压灶的完全显示率高于微超声探头；③良性胃外压灶及多数恶性肿瘤胃外压灶其所压胃壁结构均正常；④脾脏压胃者中脾肿大仅占38.46%，且均为轻、中度脾肿大；⑤胃隆起部位与外压灶的种类相关联。

Life-world is an important philosophical topic which backs many popular contem p orary theories,it intends to overthrow the edifice of traditional metaphysics bu t the two are counterparts which depend on each other.

论文关键词生活世界/形而上学/主体间性/自明性/life-world/metaphysics/intersubjectivity/sel f-evidence，论文来源华中科技大学学报：社科版，论文单位武汉，点击次数 32，论文页数 1～5页2002年2002月论文网 http：//www.lw23.com/paper_56352961/生活世界是涉及当代诸多热点问题的一个重要哲学话题，它具有动摇传统形而上学大厦基础的意图但却与形而上学的反观相对应，生活世界毋宁是相对于生存主体而展开的生存视域。

The results of the ability of anti-oxidation scavenging DPPH free radical shows that polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) have the generally better ability of anti-oxidation than control group, in which the IC50 of compound 1-10 ranges 8.75 to 18.02 μg/ml and the IC50 of trolox is 13.04 μg/ml. The abilities of anti-oxidation of compound 1, 4, 5, 7, and 10 are all better than the control group, trolox. Among all, compound 10 has the best ability of anti-oxidation (IC50 is 8.75 μg/ml). This study also discovers that the ability of scavenging DPPH free radical is strongly related to the number and the position of hydroxyl.

在清除DPPH自由基的抗氧化能力结果显示，相较於对照组水溶性维生素E之IC50值13.04 μg/ml，多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物 1 ~ 10），皆具有相当不错的抗氧化能力，十种醯胺化合物的 IC50值介於8.75 ~ 18.02 μg/ml之间，化合物1、4、5、7、10的抗氧化能力效果皆优於对照组水溶性维生素E的IC50值，其中又以化合物10的效果最佳(IC50值8.75 μg/ml)，而清除DPPH自由基的能力发现与羟基的数量及其位置有关。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失