I do not propose this evening to delve into the age-old argument concerning the discoverer of anesthesia. It is doubtful if any here assembled have, to any very great extent, witnessed surgery without anesthesia, yet only 100 years ago the screams of agony issuing from the operating room would have chilled the blood of the hardiest among us. The important point of this contribution is not which...

Likewise, the following text should have appeared in the author note: “This article has been published under the terms of the Creative Commons Attribution License (http://creativecommons .org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright for this article is retained by the author(s...

Herein, we report, for the first time, synthesis, characterization, and photocatalytic methyl blue dye degradation performance of magnesium oxide (MgO) nanoparticles (NPs) synthesized by a facile green approach using Camellia sinensis (tea leaves) extract as reducing agent. The as-prepared materials were characterized X-ray diffraction (XRD), which confirmed large-scale synthesis well crystalli...

In this work, the impact of nonstoichiometric substitution Fe3+ cations by Ni2+ ones on structural and magnetic properties Co0.5Ni0.5+xFe2−xO4 nanoferrites (0.0 ≤ x 0.4) synthesized citric autocombustion method has been investigated. The single cubic phase for samples sintered at 600 °C was verified XRD patterns FTIR spectra. crystallite size microstrain were deduced using Williamson-Hall metho...

This paper presents the characterization of a secondary cone crusher concave liner made Hadfield steel used in Chilean mining after crushing copper minerals during all service life. During use, suffers indentation (cold working) and abrasion; this combination provides with layer that constantly renews itself, maintaining surface highly resistant to abrasive wear. The results presented here were...

we report on the synthesis, morphology, chemically and structurally of tio2-cuo-sio2 nanostructure with different precursors molar ratio and calcined temperatures. in the present work, ternary reactive powders in the tio2-cuo-sio2 systems have been obtained using the sol-gel method, by the simultaneous gelation of all cations. the compounds and other elements change in special chemical and phys...

We investigated the effect of magnetic doping on magnetic and transport properties of Bi2Te3thin films. CrxBi2−xTe3 thin films with x = 0.03, 0.14, and 0.29 were grown epitaxially on mica substrate with low surface roughness (∼0.4 nm). It is found that Cr is an electron acceptor in Bi2Te3 and increases the magnetization of CrxBi2−xTe3. When x = 0.14 and 0.29,ferromagnetism appears in CrxBi2−xTe...