E-government represents more than a diffusion of some technology in the public sector. Rather, e-government, along with the set of its accompanying operations, can promote important changes resulting in more streamlined operations and better citizen-oriented services. Previous research was mainly concerned with providing conceptual models of egovernment measures, with relatively few studies emp...

Obtaining the cleanest canal possible before obturation is one of the goals of endodontic treatment. The purpose of this study was to compare the smear layer removal capability of ethylenediamine tetra-acetic acid (EDTA) application with passive ultrasonic and cotton wrapped on reamer activation. Twelve extracted human teeth with single root canals were used for the study. They were conventiona...

INTRODUCTION An increased production and use of carbon nanotubes (CNTs) is occurring worldwide. In parallel, a growing concern is emerging on the adverse effects the unintentional inhalation of CNTs can have on humans. There is currently a debate regarding which exposure metrics and measurement strategies are the most relevant to investigate workplace exposures to CNTs. This study investigated ...

nanocrystals of zno were prepared by microwave irradiation using zn (ii) acetate and triethanol amin (tea) as the starting materials and water as solvent. the nanocrystals of zno with hexagonal (wurtzite) structure were characterized by x-ray powder diffraction (xrd), transmission electron microscopy (tem), scanning electron microscopy (sem), uv-vis absorption and ftir spectroscopy techniques.

Introduction Scanning electron microscopy (SEM) has been widely used for imaging objects with various dimensions ranging from millimeters to nanometers. Compared with other common microscopies, SEM offers a unique combination of imaging characteristics including high lateral resolution, broad magnifi cation range, and large depth of fi eld. As the working mechanism of SEM, a focused electron be...

Introduction Scanning electron microscopy (SEM) has been widely used for imaging objects with various dimensions ranging from millimeters to nanometers. Compared with other common microscopies, SEM offers a unique combination of imaging characteristics including high lateral resolution, broad magnification range, and large depth of field. As the working mechanism of SEM, a focused electron beam...