CAIs thermal processing

To summarize, chondrules and CAIs formed by transient heating events that processed a large fraction of the matter in the accretion disk. These heating events appear to overprint the thermal processing that produced the volatile element depletions among chondrites. The exact nature of these events is unknown, although shock waves in the nebula and the X-wind model are currently receiving the most attention. 

Shortly after the condensation of the first minerals to form within the Solar System, thermal processing of refractory inclusions began. The overall processing of these materials into igneous rocks was short-lived, perhaps only 100000 years (Bizzarro et al. 2007). The critical constraints on the thermal histories of these objects is essentially limited to Type-B CAIs (Connolly Desch 2004), which have been generated by the experimental reproduction of these objects in the laboratory. Type-B CAIs are composed mostly of melilite, anorthite, aluminous spinel, and a titanium-rich pyroxene known in the parlance as fassaite (for a summary of minerals common to the Solar System see Appendix 1). The general consensus is... 

Chronology of secondary processes in the early solar system. Plot format and anchor points are the same as in Fig. 9.9. Dates related to thermal metamorphism are shown as open symbols, and dates related to aqueous alteration are shown as filled symbols. Both thermal metamorphism and aqueous alteration continued for tens to as much as 100 Myr after CAI formation. Data from Flohenberg and Pravdivtseva (2008), Flutcheon et al. (1998), Flua etal. (2005), Trinquier etal. (2008), Endress et al. (1996), Hoppe et al. (2004), and Zinner and Gopel (2002). 

N.G. Sahoo, H.K.F. Cheng, J. Cai, L. Li, S.H. Chan, J. Zhao, et al.. Improvement of mechanical and thermal properties of carbon nanotube composites through nanotube functionalization and processing methods. Materials Chemistry and Physics, 117 (1), 313-320,2009. 

The thermal conductivity of samples with composition (Cai.x,Mgx)Zr4(P04)6 where x= 0.2 and 0.5 was investigated using a laser flash thermal diffusivity apparatus and a differential scanning calorimeter (DSC) at. ..e HTML facility, Oak Ridge National Laboratory, Thermal conductivity was determined by the product of the thermal diffusivity, specific heat, and bulk density of each sample. Samples were made by sol-gel Process 1. 

The facile processibility and thermal stability of this class of polymers has also led to increased interest in potential applications. Thus, Agrawal and Jenekhe have studied rigid-rod poly(quinolines) for 3rd-order NLO applications [679], whilst Cai et al. [523] have looked at poled guest-host poly(quinoline) thin films for 2nd-order NLO applications. Wolf et al. [619] documented the use of poly(quinolines) in electrochromic devices. Chandrasekhar et al. [293b,c] have synthesized a series of unique poly(amino quinolines) (below) and demonstrated significant 3rd-order NLO effects in them. 

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