Search results for "53"

Measurement of the Permanent Electric Dipole Moment of the $^{129}$Xe Atom

2019

We report on a measurement of the $CP$-violating permanent electric dipole moment (EDM) of the neutral $^{129}\mathrm{Xe}$ atom. Our experimental approach is based on the detection of the free precession of co-located nuclear spin-polarized $^{3}\mathrm{He}$ and $^{129}\mathrm{Xe}$ samples. The EDM measurement sensitivity benefits strongly from long spin coherence times of several hours achieved in diluted gases and homogeneous weak magnetic fields of about 400 nT. A finite EDM is indicated by a change in the precession frequency, as an electric field is periodically reversed with respect to the magnetic guiding field. Our result $(\ensuremath{-}4.7\ifmmode\pm\else\textpm\fi{}6.4)\ifmmode\t…

Strain induced renormalization of transport properties in UPt3 thin films

1996

The growth of sputter deposited UPt3 thin films on Al2O3 (1012), LaAlO3 (111) and SrTiO3 (111) was investigated. We found strongly 0001-textured growth of UPt3 in a small compositional range of 23–25% uranium content. For Al2O3-and LaAlO3-substrates no in-plane order could be observed whereas epitaxial growth was initiated on SrTiO3 (111): The growth can be identified as Vollmer-Weber like resulting in the formation of large lateral strain as a consequence of the growth mode and a lattice misfit of −4.3% between UPt3 (0001) and SrTiO3 (111). Strong deviations from the typical heavy-fermion characteristics in electronic transport properties like resistivity, magnetoresitivity and Hall-effect…

Is there a latin american child migration law? An analysis of the ‘Advisory Opinion n. 21 on the rights of child migrants’ rendered by the Inter-Amer…

2019

In 2014, in response to the request of the Southern Cone countries, the Inter-American Court of Human Rights issued an Advisory Opinion on the rights of migrant children in an attempt to emphasize the minimum guarantees that the countries of the region should grant to this category of migrant, especially considering their hypervulnerability when compared to adult migrants. Such request, made in the light of the growing migratory flow of unaccompanied minors in the Americas, has led the Court to point to a number of rights that should be particularly guaranteed, such as the right to seek and receive asylum, non-criminalization, non-detention, and non-return of minors, culminating in the desi…

Proyección interna y extraterritorial de una familia valenciana al servicio de la Monatquía. La saga jurídica de los Sisternes

2018

Learning outcomes in the field of human resource management in business administration studies in the context of implementation of European Qualifica…

2018

The study carried out in this paper involves the analysis of the content of the competencies in the field of human resource management in order to acquire the key competences of the students that will be aligned with the needs of the labor market according to the European Qualifications Framework (EQF). The method of comparative analysis and case study methodology is used in the paper. This research compares teaching courses that include the acquisition of competences in the field of human resource management in business administration studies, one of the key areas of contemporary management, with examples from the Department of Economics and Business Economics of the University of Dubrovn…

Answer to “Immunoexpression of p53 in cutaneous and subcutaneous leiomyosarcomas”

2017

Immunoexpression of p53 in cutaneous and subcutaneous leiomyosarcomas.

2016

The diagnosis of malignancy in cutaneous and subcutaneous smooth muscle tumors is based on subtle criteria. Therefore, any ancillary technique useful in this differential diagnosis is always welcome. In this report, we study the immunoexpression of p53 in 19 malignant smooth muscle tumors of the skin (15 cutaneous leiomyosarcomas, 2 subcutaneous leiomyosarcomas, and 2 cutaneous metastases of leiomyosarcoma), as well as in 1 leiomyoma with cellular atypia, therefore complementing a previous study on p53 immunoexpression in leiomyomas of the skin. The p53 staining was positive in 12 (63.16%) of 19 leiomyosarcomas. Percentages of immunostaining in the positive cases varied from 2% to 95%. Ten …

Length Scale of the Spin Seebeck Effect

2015

We investigate the origin of the spin Seebeck effect in yttrium iron garnet (YIG) samples for film thicknesses from 20 nm to 50  μm at room temperature and 50 K. Our results reveal a characteristic increase of the longitudinal spin Seebeck effect amplitude with the thickness of the insulating ferrimagnetic YIG, which levels off at a critical thickness that increases with decreasing temperature. The observed behavior cannot be explained as an interface effect or by variations of the material parameters. Comparison to numerical simulations of thermal magnonic spin currents yields qualitative agreement for the thickness dependence resulting from the finite magnon propagation length. This allow…

Residual Stresses in Glasses

2013

The history dependence of the glasses formed from flow-melted steady states by a sudden cessation of the shear rate $\dot\gamma$ is studied in colloidal suspensions, by molecular dynamics simulations, and mode-coupling theory. In an ideal glass, stresses relax only partially, leaving behind a finite persistent residual stress. For intermediate times, relaxation curves scale as a function of $\dot\gamma t$, even though no flow is present. The macroscopic stress evolution is connected to a length scale of residual liquefaction displayed by microscopic mean-squared displacements. The theory describes this history dependence of glasses sharing the same thermodynamic state variables, but differi…

Expresión proteica de p53 y proliferación celular en leucoplasias orales

2005

Objetivos: Conocer la expresión proteica de las alteraciones genéticas que se producen en las etapas precoces de la cancerización del campo de cavidad oral en nuestro medio. Estudiar la proliferación celular mediante Ki-67 y la expresión de la proteína p53 para valorar si las alteraciones en la expresión proteica de estos marcadores suceden de forma secuencial a través de las distintas etapas en la cancerización del campo de la cavidad oral. Material y métodos: Se realizó un estudio mediante técnicas de inmunohistoquímica sobre 53 pacientes que presentaron lesiones de leucoplasia oral, atendidos por el Servicio de O.R.L del Hospital Universitario de Salamanca, desde 1.990 hasta 2000. Se inc…