The CaO layers and SiO2 chains of C-S-H likely started to decompose from 615° 630 °C, and eventually transformed to new crystalline phases.
Firstly, amorphous Ca -and P-containing precipitates formed during the SBF immersion process, eventually transformed to crystalline biomimetic apatite, exhibiting a porous structure on two-scales of micron and nanometer levels.
Subsequent dehydration, dehydrogenation and decarbonylation reactions lead to the formation of various reaction intermediates, including glycoaldehyde, 2-oxopropanol, acetaldehyde, acetone, ethanol and methanol, which are eventually transformed to gas-phase CO2 (and H2 under photo-reforming reaction conditions).
It is shown that the initial stage of equilibration of the compositionally homogeneous bcc solid solution with 19 at.% Ga results in bcc → B2 congruent ordering followed by a precipitation of Ga-rich B2 particles, which eventually transform to particles of the DO3 phase.
As can be seen, the distinctive feature of two semicircles began to vanish from the 40th cycle, eventually transforming to one semicircle-like characteristic.
With the calcination temperature increased gradually, PVA nanofibers decomposed, interconnected Fe3O4 nanoparticles maintained the fibrous morphology, and eventually transformed to α-Fe2O3 nanofibers with hollow structure.
Consequently, the modification of interlayer forces resulted in the instability of intralayer interactions, and the two-dimensional nanosheets eventually transformed to 1D nanostructures.
The theater eventually transformed to a German film house, even acting as host for the Chicago International Film Festival in 1972 where they opened with Signs of Life.
The challenge of sustainability places greater demands on infrastructure innovations that facilitate the improvement of existing infrastructure, as well as the creation of new infrastructure to balance economic, social and environmental needs and eventually transform to a sustainable civilization.
