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This paper deals with the difficulty of decoding the origins of natural structures through the study of their morphological features. We focus on the case of primitive life detection, where it is clear that the principles of comparative anatomy cannot be applied. A range of inorganic processes are described that result in morphologies emulating biological shapes, with particular emphasis on geochemically plausible processes. In particular, the formation of inorganic biomorphs in alkaline silica-rich environments are described in detail. 相似文献
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继推出世界首创的"PVD Tiger"之后,瓦尔特又向市场推出了全新的产品,即新一代的CVD涂层切削材料Tiger·tec(R)Silver.现场测试和试验结果表明,该切削材料在性能上获得惊人的提高. 相似文献
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R. Rocchia M. Arnaud C. Blondel C. Cheron J. C. Christy R. Ducros L. Koch R. Rothenflug H. W. Schnopper J. P. Delvaille 《Space Science Reviews》1981,30(1-4):253-257
Conclusions The present results confirm the thermal nature of the interstellar soft X-ray emission and give rather clear evidence of the Oxygen and Carbon contribution. 相似文献
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