本文選題：貝殼　切入點(diǎn)：表面微結(jié)構(gòu)　出處：《大連海洋大學(xué)》2015年碩士論文

【摘要】：海洋污損生物的的附著問題近年來受到廣泛關(guān)注,大量的調(diào)查研究發(fā)現(xiàn)貝殼表面有良好的抗海洋污損作用,已有資料表明其抗污損能力與貝殼表面的微結(jié)構(gòu)有密切聯(lián)系。本文以大連周邊海域的十種常見貝殼為研究對(duì)象,基于分形理論和明暗恢復(fù)形狀(SFS)三維重建分析,用分形維數(shù)和貝殼表面高度參數(shù)表征其表面微結(jié)構(gòu)特征。通過比較分析不同貝殼表面結(jié)構(gòu)的差異和貝殼不同位置表面結(jié)構(gòu)的差異,為海洋生物表面仿生防污提供理論支持。本文的主要結(jié)論如下:(1)提出有效測(cè)量并表征貝殼表面微結(jié)構(gòu)的方法,用分形維數(shù)、表面均方根偏差R3q、表面高度偏斜度Ssk和陡峭度Sku來描述貝殼表面微結(jié)構(gòu)粗糙度和微觀表面凹凸情況。表面均方根偏差R3q和分形維數(shù)有相反的關(guān)系,即R3q越大對(duì)應(yīng)的分形維數(shù)越小,反之越大,表明分形維數(shù)可以用來評(píng)定貝殼的表面粗糙度;(2)從收集的大量貝殼標(biāo)本發(fā)現(xiàn),波紋巴非蛤表面干凈整齊,相比而言櫛孔扇貝卻常見污損生物的附著,然而二者的分形維數(shù)卻相差不大,表明海洋貝殼的抗污性不能僅僅用分形維數(shù)來衡量,更與表面結(jié)構(gòu)的凸起和凹槽結(jié)構(gòu)有關(guān);(3)對(duì)于具有明顯放射肋的蚶科貝殼和扇貝科貝殼,分析發(fā)現(xiàn)蚶科貝殼的表面高度偏斜度Ssk小于零,扇貝科大于零,說明蚶科貝殼的表面有更多的凹形結(jié)構(gòu),而扇貝科表面有較多的凸起結(jié)構(gòu),這可能與蚶科貝殼表面長(zhǎng)有粗糙的殼毛這一現(xiàn)象有關(guān);(4)不同貝殼表面及同種貝殼表面不同位置的分形維數(shù)都在1.8-2.0范圍內(nèi),其差異不大但同種貝殼不同局部都有所差異。對(duì)于同種貝殼,靠近殼頂?shù)臍ど喜课环中尉S數(shù)較大,且對(duì)應(yīng)的表面均方根偏差較大,表明靠近殼上位置較粗糙,不同的貝殼粗糙度有所不同,但基本都符合這一規(guī)律。
[Abstract]:In recent years, the problem of the adhesion of marine fouling organisms has received extensive attention. A large number of investigations have found that the shell surface has a good anti-marine fouling effect. It has been shown that the anti-fouling ability is closely related to the microstructure of the shell surface. In this paper, ten common shells in the sea area around Dalian are studied, based on the fractal theory and the three-dimensional reconstruction analysis of shaded shape restoration (SFS). Fractal dimension and shell surface height parameters were used to characterize the surface microstructure. The main conclusions of this paper are as follows: (1) A method for effectively measuring and characterizing the microstructures of shell surfaces is proposed, using fractal dimension. The surface root-mean-square deviation (R3Q), surface highly skew degree (Ssk) and steepness degree (Sku) are used to describe the surface roughness of the shell surface and the concave and convex conditions of the micro-surface. The R3q deviation of the surface root-mean-square has the opposite relationship with the fractal dimension. That is, the larger the R3q, the smaller the corresponding fractal dimension, and the bigger the opposite, which indicates that the fractal dimension can be used to evaluate the surface roughness of the shell. In contrast, scallop chlamys farreri usually attach to fouling organisms, but the fractal dimension of the two is not different, indicating that the anti-fouling ability of marine shells can not be measured by fractal dimension alone. For the clams and scallop shells with obvious radiating ribs, it is found that the surface height deflection degree of the clams is less than zero, and that of the scallop is higher than zero. It shows that there are more concave structures on the surface of the clams and more bulging structures on the scallop. This may be related to the coarse shell hair on the surface of the clams.) the fractal dimensions of different shell surfaces and different positions of the same shell surface are in the range of 1.8-2.0. For the same shell, the fractal dimension of the shell near the top of the shell is larger, and the deviation of the surface root mean square (RMS) of the corresponding surface is larger, which indicates that the position near the shell is rough. The roughness of different shells is different, but basically accords with this rule.
【學(xué)位授予單位】：大連海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S917.4;X55

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