Search results for "element"

LHC phenomenology of two-Higgs-doublet models in the LHC era

2014

En esta tesis se analiza la posibilidad de que el bosón recién descubierto en el LHC pertenezca a un sector escalar extendido conocido como modelo de dos dobletes de Higgs, teniendo en cuenta experimentos en la frontera de intensidad y de energía. Hay varias razones para estudiar la fenomenología de sectores escalares extendidos. Por un lado, ningún principio fundamental de la teoria electrodébil explica la ruptura espontánea de la simetría de gauge electrodébil, uno más bien tiene que asumir que este fenómeno ocurre. Muchos modelos o teorías que tratan de explicar el rompimiento de la simetría electrodébil involucran sectores escalares más complejos que el del modelo estándar. Sectores esc…

Beyond Standard Model phenomenology with or without a light Higgs

2012

144 páginas. Tesis Doctoral del Departamento de Física Teórica, de la Universidad de Valencia, y del Instituto de Física Corpuscular (IFIC). Fecha de lectura: 11 diciembre 2012.

The gallium anomaly revisited

2019

The gallium anomaly, i.e. the missing electron-neutrino flux from $^{37}$Ar and $^{51}$Cr electron-capture decays as measured by the GALLEX and SAGE solar-neutrino detectors, has been among us already for about two decades. We present here a new estimate of the significance of this anomaly based on cross-section calculations using nuclear shell-model wave functions obtained by exploiting recently developed two-nucleon interactions. The gallium anomaly of the GALLEX and SAGE experiments is found to be smaller than that obtained in previous evaluations, decreasing the significance from 3.0σ to 2.3σ. This result is compatible with the recent indication in favor of short-baseline ν¯e disappeara…

Using game elements to increase students’ motivation for providing peer assistance

2017

Master's thesis Multimedia and Educational Technology MM500 - University of Agder 2017 Abstract Peer assistance is a support system where people of equal status help each other solve problems. It is also a recognized method within education where students support each other with their assignments. The positive effect of peer assistance is well known, and it would be favorable if more students participated and took on the role as peer-teachers. To increase the activity of peer assistance, several incentives can be used, including game elements. In “Using game elements to increase peer assistance among university students”, (Nordengen & Brinch, 2016, p. 1) tried to predict which game elements…

In Silico Finite Element Modeling of Stress Distribution in Osteosynthesis after Pertrochanteric Fractures

2022

A stabilization method of pertrochanteric femur fractures is a contentious issue. Here, we assess the feasibility of rapid in silico 2D finite element modeling (FEM) to predict the distribution of stresses arising during the two most often used stabilization methods: gamma nail fixation (GNF) and dynamic hip screw (DHS). The modeling was based on standard pre-surgery radiographs of hip joints of 15 patients with pertrochanteric fractures of type A1, A2, and A3 according to the AO/OTA classification. The FEM showed that the stresses were similar for both GNF and DHS, with the medians ranging between 53–60 MPa and consistently lower for A1 than A3 fractures. Stresses also appeared in the fixa…

117番元素Ts合成のための48Ca+249Bk融合反応

2019

We have performed an experiment to synthesize the element 117 (Ts) with the $^{48}$Ca+$^{249}$Bk fusion reaction. Four $\alpha$-decay chains attributed to the element 117 were observed. Two of them were long decay chains which can be assigned to the one originating from the $\alpha$ decay of $^{294}$Ts. The other two were short decay chains which are consistent with the one originating from the $\alpha$ decay of $^{293}$Ts. We have compared the present results with the literature data, and found that our present results mostly confirmed the literature data, leading to the firm confirmation of the synthesis of the element 117.

¿Cabe hablar de una «generación de la crisis»? Discusión en torno a una noción sobreexplotada

2018

This article states that nowadays there is an overuse (or a misuse) of the «Generation» idea. The discussion among many authors over the «Generation of crisis» concept suggests that it is useful to outline the characteristics of the target of population of the collective of youth who are mainly affected by the economic and social crisis over the past years. Nevertheless, through analyzing the meanings of the «Generation of Crisis» made by Mannheim, Ortega and other classic authors, it is clear that the social class approach together with the generational one are needed to define this concrete concept. The conclusion of the articleis that both approaches are seen as underpinning their utilit…

In silico identification of the TRIM gene complement of the sea urchin and computational prediction of Helitron-N2 transposable element in the 5’ non…

2011

The behavior of Rare-Earth Elements, Zr and Hf during biologically-mediated deposition of silica-stromatolites and carbonate-rich microbial mats

2015

Abstract Venere Lake, in the Pantelleria Island thermal system (Central Mediterranean Sea) consists of a mix of seawater and hydrothermal volcanic fluids containing high levels of dissolved SiO 2 . Close to the lake's thermal springs, siliceous stromatolites are deposed under high bacterial activity conditions whereas roughly interlaminated Ca-carbonates and microbial mats are widely scattered in the lake. The dissolved REE speciation in lake waters is dominated by [REE(CO 3 ) 2 ] − , [REE(CO 3 )] + and [REE(H 3 SiO 4 )] 2 + complexes. On the contrary the most abundant Zr and Hf species are hydroxyl- and fluoride-complexes. The behavior of REE Zr and Hf in the Venere lake waters is controll…

Quantification of the depletion of ozone in the plume of Mount Etna

2015

Volcanoes are an important source of inorganic halogen species into the atmosphere. Chemical processing of these species generates oxidised, highly reactive, halogen species which catalyse considerable O3 destruction within volcanic plumes. A campaign of ground-based in situ O3, SO2 and meteorology measurements was undertaken at the summit of Mount Etna volcano in July/August 2012. At the same time, spectroscopic measurements were made of BrO and SO2 columns in the plume downwind. Depletions of ozone were seen at all in-plume measurement locations, with average O3 depletions ranging from 11–35 nmol mol−1 (15–45%). Atmospheric processing times of the plume were estimated to be between 1 and …