The typical Zn - O stretching vibration peak appears at 431 cm-1 and 429 cm-1 in the IR spectra of ZO1 and ZO2, respectively [45, 46].
The relative red shift in the position of the band in IR spectrum of ZO2 is due to the comparatively larger particle size obtained as a result of increased sintering temperature .
The BET surface areas of ZO1, ZO2, ZO3 and ZO4 are 14.26 m2/g, 6.90 m2/g, 68.95 m2/g and 4.13 m2/g, respectively.
The ZO1 and ZO2 have elongated and distorted elongated while the ZO4 have hexagonal rod like particles, respectively.
The role of H+ and HO-in hindering the agglomeration of ZnO nanoparticles of ZO1 and ZO3 is also evident from the fact that the particles of ZO2 and ZO4 are relatively more agglomerated.
Similarly, the CSLI children in the study reported in Stokes and Fletcher (2000) appear to prefer to use zo2, a completive marker, with accomplishment or achievement verbs.
First, because aspect markers other than zo2 are relatively late to develop, using an age-matched group with CSLI children of the language age available permits us to examine a more extensive range of these forms.
Gan2 and zyu6, which are difficult to elicit in connected speech, were sampled four and three times respectively, zo2 twice and haa5 once.
The children with SLI and their age-matched peers did not differ in ability to use the aspect markers zo2, gan2, and zyu6 in the repetition task.
There was a significant difference between the groups in the number of children who used zo2 ([V.sup.2] = 3.68, p < 0.05) and zyu6 ([V.sup.2] = 10.92, p < 0.001), with more of the CND children using the forms than the CSLI children.
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Hall of Fame center Shaquille O'Neal, whose shoes retail for between $13 and $68 at Walmart, also commented on the ZO2 in a tweet.