Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z

   |<      <<      >>     > |    


XTEM images of sample C prepared by using sample B as a substrate and deposited diamond for 5min using c 0.5 CH4 H2. x4000000 .

XTEM micn gra h of TaSiz-, sputter deposited onto ion Iwndmided triaaiiie nsoct potymer

XTEM micrograph of a sample containing a 0.7 nm Ge layer, oxidized at 800 C for 14 min in O2. The light black dots in the SiOa layer represent the partially reduced GeOj clusters.

XTEM of the diamond film grown on Ir ,

XTH-2 cells derived from Xenopus tadpole heart endothelia, on polystyrene, 0.9 GHz

XTL plant with low or high temperature Fischer-Tropsch synthesis.

XTV-15. Drainage of soap films.

Xu and Xu s asymmetric oxa-Michael Mannich reaction.

Xu et al. have shown that the energy gain in NisAl associated with magnetism is about an order of magnitude smaller than that due to the structural differences. Our calculations show that the NM NisAl in the LI2 structure is stable with respect to tetragonal and trigonal deformations . Therefore, magnetism does not appear to play an important role in the control of phase stability. This is in sharp contrast with iron, where the onset of ferromagnetism stabilizes the bcc structure and NM bcc states are not stable with respect to tetragonal deformation

Xu s A ,0-acetal ketone coupling.

Xu s enantioselective domino approach to polysubstituted tetrahydroquino-

Xu values for Mannich bases plotted vs. ApAa, according to Ref. .

Xue et al. s Cu-catalyzed cycloisomerization HDA cascade approach towards spiroacetals

Xue et al. s gold-spiroacetals

Xue et al. s hypoiodite approach toward bis spiroacetals

Xue et al. s hypoiodite-based synthesis of y-rubromycin

Xue etal. s gold spiioacetals

XV can be understood in terms of the simplified mechanism.

XV-2 shows the relationships among the nicotine-related alkaloids — nornicotine , anabasine VIII — and the NNAs IX, XI-XVH and cotinine X. Table XV-4 summarizes some of the early research on the TSNAs.

XV-5 shows the predicted heat removal capability of the RVACS. Since the temperature distribution in the primary hot plenum is in transition and the secondary flow is unstable for about 1 hour after the shutdown, the heat and flow are observed to move up and down. The RVACS removes about 0.8 MW is used to denote the coolant temperature at the top of the down comer, which is representative of the primary boundary temperature. The maximum temperature of the coolant is low enough to meet the criterion. The maximum primary boundary temperature is also lower than 650 C. The results of thermal-hydraulics analysis, performed with the use of the CERES code, indicate that neither stagnant areas nor local vortex flow are observed in the flow pattern due to a simple flow path configuration. With relation to the flow pattern, it is also predicted that neither a hot spot nor a cold spot will be observed in the temperature distribution .

XV-7 shows the predicted temperature changes of the fuel and the coolant at the nominal hottest pin, which has the highest temperature of all the pins. The maximum temperatures are lower than the fuel melting point of 1180 C and the sodium boiling point of 960 C, respectively.

XV-9 shows the averaged axial power profiles at several moments during the core lifetime. At the beginning of core life , the reflector is almost at the top of the core. Otherwise negative, the coolant density reactivity coefficient and the coolant void reactivity effect are approaching zero at the EOC.

XVI is more difficult to analyze than are any of the kinetic schemes treated earlier in this chapter, because it includes a second-order reaction.

XVI-1 and the related discussion first appeared in 1960 , and since then a very useful mathematical approach to irregular surfaces has been applied to the matter of surface area measurement. Figure XVI-1 suggests that a coastline might appear similar under successive magnifications, and one now proceeds to assume that this similarity is exact. The result, as discussed in Section VII-4C and illustrated in Fig. VII-6, is a self-similar line, or in the present case, a self-similar surface. Equation VII-21 now applies and may be written in the form

XVI-8 shows the heat transport path from the core to the ultimate sink during normal operation and under emergency conditions.



   |<      <<      >>     > |    

SEARCH



© 2024 chempedia.info