Search results for " Methods"

In vivo study of different methods for diagnosing pit and fissure caries

2015

Background In recent years the early detection of such caries has gained importance, since it may avoid unnecessary dental tissue damage and allow minimally invasive dental treatment. A study is made of 5 systems for diagnosing caries: traditional visual and tactile methods, DIAGNOdent, VistaProof and CarieScan. Material and Methods A prospective study was made in the Department of Stomatology, Dental Pathology and Therapeutics Teaching unit of the University of Valencia (Valencia, Spain), involving the analysis of 32 teeth (molars or premolars of both arches scheduled for filling or for use as posts in dental bridges) in 28 patients. The following caries diagnostic methods were applied: vi…

Recent advances on nanomaterial based electrochemical and optical aptasensors for detection of cancer biomarkers

2018

Abstract Cancer is a real menace to all societies globally since it is the leading cause of premature mortality in men and women. The incidence of malignancies is enhancing as a result of plenty factors. Physically and economically concerns that occur in cancers patients cannot be neglected. However, current diagnostic methods and cure duration do not fulfill patients requirements. Therefore, it is essential to detect and diagnose cancer biomarkers as soon as possible and overcome the current burdens. Novel aptasensors is emerging as one of the most promising strategies for early recognition of cancer. Aptamers an artificial DNA or RNA sequences, possess plenty of merits such as easy produc…

Taenia asiatica: the Most Neglected Human Taenia and the Possibility of Cysticercosis

2013

Not only Taenia solium and Taenia saginata, but also Taenia asiatica infects humans. The last species is not included in the evaluation of the specificity of the immunodiagnostic techniques for taeniasis/cysticercosis. There is currently no specific immunodiagnostic method for T. asiatica available. Therefore, due to the fact that molecular techniques (the only tool to distinguish the 3 Taenia species) are normally not employed in routine diagnostic methods, the 2 questions concerning T. asiatica (its definite geographic distribution and its ability to cause human cysticercosis), remain open, turning T. asiatica into the most neglected agent of human taeniasis-cysticercosis.

Progress in language teaching

2018

On-line photoreaction and fluorimetric determination of diazepam.

1993

Metodologías de enseñanza y aprendizaje del arte en la educación primaria

2011

La investigación que aquí se resume está centrada en el arte y su historia dentro de la educación primaria ya que se considera esta materia como clave para desvelar la mirada de los niños hacia el mundo que les rodea y así puedan aprender a descodificarlo. Desde el inicio de la investigación, se ha intuido que todavía no tenemos ninguna teoría del conocimiento que nos explique por qué los mismos niños pueden aprender entusiasmados algo y no querer aprender otra cosa. La investigación quería encontrar y aislar algunos de los factores que contribuyen al aprendizaje centrándose en las diferencias en el método de enseñanza como factor clave.

Educación artística : revista de investigación

2011

Resumen basado en el de la publicación Título, resumen y palabras clave también en inglés Monográfico con el título: "Arte, Maestros y Museos" Se pretende mostrar una experiencia de investigación en el aula de primaria en seis centros educativos, dónde se han experimentado dos unidades didácticas con metodologías diferentes para verificar la incidencia de los métodos en los procesos de enseñanza y aprendizaje del arte. ESP

Determination of the effective permittivity of dielectric mixtures with the transmission line matrix methodDetermination of the effective permittivit…

2007

In this article, the effective permittivity of two-phase dielectric mixtures is calculated by applying the transmission line matrix (TLM) method. Two slightly different TLM algorithms are considered: a hybrid approach, which combines the TLM method with a subgriding technique based on dual capacitor circuits, to allow a refined description of the material, and a standard or pure TLM approach, which uses a mesh size smaller than the typical dimension of insertions in order to appropriately describe details of the geometry. A study of the statistical distribution of permittivity for insertions in random positions is also presented, showing that the effective permittivity of the mixture tends …

Pressure-induced phase transformation in zircon-type orthovanadate SmVO4from experiment and theory

2016

The compression behavior of zircon-type samarium orthovanadate, SmVO4, has been investigated using synchrotron-based powder x-ray diffraction and ab-initio calculations up to 21 GPa. The results indicate the instability of ambient zircon phase at around 6 GPa, which transforms to a high-density scheelite-type phase. The high-pressure phase remains stable up to 21 GPa, the highest pressure reached in the present investigations. On pressure release, the scheelite phase is recovered. Crystal structure of high-pressure phase and equations of state (EOS) for the zircon- and scheelite-type phases have been determined. Various compressibilities such as bulk, axial and bond, estimated from the expe…

Electronic structure and transport properties of the Heusler compound Co2TiAl

2009

The properties of the Heusler compound Co2TiAl were investigated in detail by experimental techniques and theoretical methods. X-ray diffraction measurements indicate that as-cast samples of the compound exhibit the L21 structure with a small amount of B2-type disorder. This leads to a reduced saturation magnetization per formula unit of 0.747 μB. The Curie temperature is approximately 120 K. The transport properties are influenced by the change in the electronic structure at the Curie temperature, as revealed experimentally by conductivity, thermal transport and specific heat measurements. Different theoretical models based on ab initio calculations of the electronic structure are used to …