In this study, calcium-phosphate (Ca-P) and graphene oxide (GO)/ calcium-phosphate (Ca-P) coatings were electrodeposited with different pulsed current densities on TiO2 nanotubes. Results showed that the co-electrodeposition rate in the presence of GO, especially at low current densities of 2 and 5 mA/cm2, significantly decreased. This might be due to the large size of GO sheets as compared to ...

Xu She’s interest in engineering began elementary school, after reading One Hundred Thousand Whys . This popular science book series China, mostly intended for children, was given to him by his parents and ignited a passion that would burn brightly throughout life. It included various stories c...

INTRODUCTION The purpose of this study was to evaluate the effects of different solutions used for final irrigation on sealer penetration into dentinal tubules. METHODS Thirty-two recently extracted human mandibular premolar teeth were treated with sodium hypochlorite (NaOCl) irrigation. The samples were divided into 4 groups according to the final irrigation solution used: (1) the EDTA group...

Abstract The Southern Rocky Mountains first rose during the Laramide Orogeny (ca. 75–45 Ma), but today's mountains and adjacent Great Plains owe their current height to later epeirogenic surface uplift. When why epeirogeny affected region are controversial. Sedimentation histories in two central Colorado basins, South Park–High Park Denver shifted at 56–54 Ma from an orogenic pattern, suggestin...

1 Institute for Quantitative Social Science, Harvard University, Cambridge, MA 02138, USA 2 Department of Health Care Policy, Harvard Medical School, Boston, MA 02115, USA 3 Department of Anthropology, Cambridge University, Cambridge, CB2 3DZ, UK 4 Medical Genetics Department, University of California, San Diego, CA 92103, USA 5 Political Science Department, University of California, San Diego,...