(Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010; 109: e20-e25)”
“ZnO nanotubes (ZNTs) have been successfully evolved from ZnO nanorods (ZNRs) by a simple chemical etching process. Two peaks located at 382 and 384 nm in the UV emission region has been observed in the room temperature photoluminescence

(PL) spectrum of ZNTs since the surface band bending in ZNTs induces the coexistence of indirect and direct transitions in their emission process. In addition, a strong enhancement of total luminescence intensity at room temperature in ZNTs has also be observed in comparison with that of ZNRs. Both temperature-dependent PL and time-resolved ACY-738 chemical structure PL results not only further testify the coexistence of indirect and direct transitions due to the surface band bending but also reveal that less nonradiative contribution to the

emission process in ZNTs finally causes their stronger luminescence intensity. (C) 2010 American Institute of Physics. GDC-0973 [doi:10.1063/1.3511345]“
“This article deals with the crystallization behaviors of original (prepared in a torque rheometer), DSC crystallization and mold crystallization (quenching and slow nonisothermal crystallization) of isotactic polypropylene (iPP) mixed with beta-form nucleating agent. The microstructure and thermal stability of these samples were investigated. The wide angle X-ray diffraction (WAXD) results indicate that fast cooling

is favorable for beta-form iPP formation. With slower cooling rate and higher concentration of nucleating agent, the lamellar thickness and stability of crystal0s were enhanced. Polarized optical microscopy (POM) and scanning electron microscopy (SEM) both showed that rapid crystallized samples gave rise to tiny spherulites, whereas under slow crystallization condition, nucleated BV-6 order samples could be fully developed in the form of dendritic or transcrystalline structures, depending on the nucleating agent concentration. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 1374-1382, 2011″
“Teeth with traumatic crown-root fractures extending subgingivally and involving the entire width of the tooth may have problems in endodontic isolation, periodontal maintenance, and restoration. A number of techniques, such as crown lengthening, and orthodontic or surgical extrusion, have been described for treatment of crown-root fractures. However, all of these techniques have limitations in terms of the extended time required for treatment, cost, and esthetic considerations. Intra-alveolar transplantation is an alternative treatment option in the management of complicated crown-root fractures. We describe a case of intra-alveolar transplantation with 180 rotation and suture fixation.