摇晃
发表于 2025-3-23 12:19:51
In Search of Another Earth: An Extremely Rare Planet,to the Earth should have almost all the conditions that favor life to originate and to evolve. But what are those conditions? We are so accustomed to live under this planetary environment that we often do not realize them. We are even not aware of many of the conditions that indirectly preserve our
glucagon
发表于 2025-3-23 15:21:43
1614-659X ilarities with giant exoplanets..All these fascinating questions will be answered in a non-technical manner. But those of you who want to know a bit more may look up the relevant mathematical relationships in appendices.978-3-319-09893-7978-3-319-09894-4Series ISSN 1614-659X Series E-ISSN 2197-6651
milligram
发表于 2025-3-23 21:48:02
and may in turn create some conditions for renewed upswings. Far from being automatic, however, the momentum of such upswings is greatly influenced by the historical circumstances in which they occur. Such a relationship between upswings and downturns is true not only for ordinary business cycles,
aphasia
发表于 2025-3-24 00:42:52
Sujan Sengupta Its strength decreases with increasing porosity. However, the crystal structure of Si within the porous layer is nearly identical to that of Si without pores. It has been noted that the x-ray rocking curves of porous and nonporous Si are very similar. Immediately after anodic etching the lattic
STEER
发表于 2025-3-24 03:50:32
Sujan Senguptace supporting the VLS mechanism. Many other facts could be mentioned, all pointing to the important role played by impurities in the nucleation of whiskers. Thus, in the reduction of iron halides the iron whiskers grow on magnesium segregations . Selective nucleation of whiskers of iron oxides wa
万神殿
发表于 2025-3-24 09:12:12
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瘙痒
发表于 2025-3-24 11:30:42
ienting effect. On (001)SrTiO. substrates, the c axis is usually perpendicular to the substrate although a horizontal placement has also been noted . Film orientations for which the ., ., and . axes are parallel to {100} SrTiO., i.e., the c axis of YBa.Cu.O. (YBCO) is parallel to the sub
隐士
发表于 2025-3-24 17:27:30
conomy. It is increasingly acknowledged that the recent problems were not merely cyclical in nature, but were actually structural in origin as well. Conventional economic analysis has tended to portray the global economic downturns of the 1980s as the result of unavoidable temporary cyclical downtur
烤架
发表于 2025-3-24 22:42:37
Sujan Senguptapecially after converting the three-layer system into a Si-on-insulator structure via oxidation of the porous sublayer . Anodic etching regimes enabling the surface layer of p+-type Si to be converted into a porous material with a significant pore volume are known. The physical properties of po
MURAL
发表于 2025-3-25 00:13:51
Sujan SenguptaIn fact, the beginning was the diffusion-dislocation model of Sears which was an attempt to relate the nucleation and one-dimensional growth of whiskers to the non-disappearing step created by a screw dislocation on a substrate surface. For some time this model was widely accepted because of a n