Clausius—Clapeyron方程在界面吸附体系中的应用

本文通过对界面吸附的讨论,了解Clausius-Clapeyron方程在此体系中的应用,得出在界面吸附平衡条件下的克—克方程一般表达式,并由此导出此条件下吸附热与理想气体分压及理想溶液浓度的关系.     

面模型与球壳模型下的电场强度

通过采用面模型与球壳模型对均匀带电球面处的电场强度的计算与分析,揭示了其场强分布与所采用的物理模型的依赖关系,指出两种模型下谈及球面处的场强均有实际意义。     

Electromyographic analysis of hip adductor muscles in soccer instep and side-foot kicking

ABSTRACT

A possible link between soccer-specific injuries, such as groin pain and the action of hip adductor muscles has been suggested. This study aimed to investigate neuromuscular activation of the adductor magnus (AM) and longus (AL) muscles during instep and side-foot soccer kicks. Eight university soccer players performed the two types of kick at 50%, 75% and 100% of the maximal ball speed. Surface electromyography (EMG) was recorded from the AM, AL, vastus lateralis (VL) and biceps femoris (BF) muscles of both kicking and supporting legs and the kicking motions were three-dimensionally captured. In the kicking leg, an increase in surface EMG with an increase in ball speed during instep kicking was noted in the AM muscle (p < 0.016), but not in AL, VL or BF muscles (p > 0.016). In the supporting leg, surface EMG of both AM and AL muscles was significantly increased with an increase in the ball speed before ball impact during both instep and side-foot kicks (p < 0.016). These results suggest that hip adductor muscles markedly contribute to either the kicking or supporting leg to emphasise the action of soccer kicks.     

鞍山地区地表水除藻方法的研究

藻类是造成地表水富营养化的主要因素，它对城市供水的危害是多方面的．本通过大量实验，分别采集源水、出厂水、管网末梢水等不同样品，到出了汤河水源所合藻类的种类、数量，并通过模拟实验，找到了地表水除藻的可行性方法．     

Surface plasmon resonance analysis to evaluate the importance of heparin sulfate groups'''' binding with human aFGF and bFGF

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Reconstruction from contour lines based on bi-cubic Bezier spline surface

A novel reconstruction method from contours lines is provided. First, we use a simple method to get rid of redundant points on every contour, then we interpolate them by using cubic Bézier spline curve. For corresponding points of different contours, we interpolate them by the cubic Bézier spline curve too, so the whole surface can be reconstructed by the bi-cubic Bézier spline surface. The reconstructed surface is smooth because every Bézier surface is patched with G² continuity, the reconstruction speed is fast because we can use the forward elimination and backward substitution method to solve the system of tridiagonal equations. We give some reconstruction examples at the end of this paper. Experiments showed that our method is applicable and effective. Project supported by the National Natural Science Foundation of China (Nos. 60373070 and 60573147), Postdoctor Foundation of Shanghai (No. 05R214129), and Zhejiang Education Foundation of China (No. 20050786)     

表面肌电的处理方法及在体育科研中应用前景

表面肌电信号的检测是一种无创电检测方法,它的检测分析对临床诊断及康复医学、运动医学等具有重要意义。肌电图学在体育科学研究上应用较晚,主要用于对肌肉力量和肌肉疲劳的诊断上,并逐步从基础理论研究转向为运动技术服务的实践研究。本文试图对表面肌电的信号分析方法及其在体育中应用前景作个回顾。     

渭河流域上游干湿状况时空分布及其与地表水资源的关系

根据渭河上游渭源等11县（区）国家基本（一般）气象站1971年-2008年逐月气温、降水量、相对湿度、日照时数、风速等资料及渭河上游北道水文站1971年-2008年径流量资料,利用Penman-monteith（98版）公式计算了该区域的潜在蒸散量。建立了评价该地区干湿状况的干燥指数模型,对该区域气候、潜在蒸散量、干湿指数的变化特征及其干湿状况对地表水资源的影响进行了分析。结果表明,自1971年以来,渭河上游区域气温以0.3℃/10a的线性趋势上升;降水量呈较明显的周期变化;潜在蒸散以23mm/10a的线性趋势增加。干燥指数总体呈上升趋势,变化阶段性较强。1971年-1984年以0.826/10a的线性趋势降低,1984年-1997年以0.852/10a的线性趋势升高。渭河干流区域干燥指数较高,干燥指数较高的区域,正好与甘肃河东区域气候上的＂干舌＂相对应。1971年-2008年径流量以2567×104m3/10a的线性趋势减少。1984年-1997年径流量以9023×104m3/10a的线性趋势减少。干燥指数持续增大比较明显地影响了上游地表水资源,在一定程度上对下游水资源安全造成威胁。     

一种化简二次曲面方程的新方法

利用平面上的坐标轴旋转变换消去两坐标变量的混乘项,再用空间中的移轴变换化简二次曲面方程,得到了化简二次曲面方程的一种新方法,依此方法易见曲面在给定坐标系中的位置。     

中法文化差异在两种语言互译中的影响

中法两国之间有着不同的文化。两种不同的文化之间既有相互联系的共性,也有各自的特性。两种文化之间的翻译之所以成为可能,就是因为存在着共性。同理,汉法两种语言互译中存在的疑难问题,除了语言水平和理解上的障碍以外,很大部分来自于两国的文化差异。因此汉法两种语言的翻译不仅仅是两种语言符号表层指称意义的转换,更是深层意义上两种不同文化之间的相互沟通和移植,翻译既涉及了两种语言,又涉及了这两种文化。