Gerakan Madres De La Plaza De Mayo dan Dampaknya terhadap Penegakan HAM di Argentina

This research aims to understanding and explaining the strategy used by Madres De La Plaza de Mayo Movement to establishing human rights enforcement in Argentina as well as Understanding and explaining the impact of the efforts undertaken by the Madres De La Plaza de Mayo Movement towards human rights establishment in Agentina. For that, in achieving the objectives, the writer uses descriptive analytic method. The data collection techniques used is aliterature review. To process and analyze the data, the authors use qualitative analysis techniques and to discuss and explain the results of the analysis, the authors use inductive-deductive writing technique. The results obtained from this study indicate that the Madres De La Plaza de Mayo is a movement that arose as a result of human rights violations committed by the military regime in Argentina in 1976-1983. This movement then taking action in protest and demanded the Argentine government to enforce human rights in Argentina. In conducting the efforts, the movement was able to build a network and cooperation with foreign actors either NGO, IGO and other countries for support and simultaneously pressed the Argentine government in relations to defending human rights voiced by this movement. This strategy then have a positive impact in encouraging the emergence of democracy in Argentina and broadly encourage the emergence of a series of policies and measures in the various aspects of human rights in Argentina

Coupling system dynamics and contact behaviour: Modelling bearings subjected to environmental induced vibrations and 'false Brinelling' degradation

During the last decades the increase in power of mechanical systems and the demand for increasing service life leads mechanical components of a system to work in extreme conditions. Moreover, actual mechanical systems include surfaces in sliding contact that are subjected to wear if exposed to high vibration. In fact, the vibration of components in contact results in large oscillations of the local contact stresses, due to the local deformation of the components at the contact interfaces. To approach correctly tribological problems, the coupling between the scale of the mechanism (system dynamics) and the scale of the contact needs to be accounted for. This paper presents an analysis concerning the influence of the vibrations induced by aircraft engines on the contact stresses of rolling bearings of the bleed system valves. To study the wear, resulting from false brinelling at the contact surfaces between balls and races of the bearings, it is then necessary to determine the forces due to the system vibrations and acting at the bearing connections with the structure. In order to perform a numerical transient analysis of the system dynamics a nonlinear simplified model of the valve (mechanism scale) is developed. The model is validated by comparing the numerical results with experimental tests. The time behaviour of the global forces on the bearings, and the respective displacements between the contact surfaces, are then used as inputs for a finite element model of the bearings (contact scale). The model is used to calculate and analyze the behaviour in time of the local contact constraints between race and balls. This analysis, developed in the framework of a European project, is an example of the proposed general approach to contact problems, by coupling the analysis of the mechanism and contact scales

Nonlinear numerical model for predicting charge conditions on rolling bearings submitted to environmental vibrations

During, last decades the power increasing of mechanical systems and the request for increasing service life leads mechanical components of a system to work in extreme conditions. In particular actual mechanical systems include surfaces in sliding contact that are subjected to wear if exposed to high vibration. In fact, the vibration of components in contact results ill large oscillations of the local contact stresses, due to the local deformation of the components at the contact interfaces. Thus the necessity to approach an interdisciplinary problem dealing with dynamics (system vibrations) and tribology (contact behavior). This paper presents an analysis concerning the influence of the vibrations induced by aircraft engines oil the wear of contact surfaces of rolling bearings of the bleed system valves. The study is developed on the framework of an European project. To study the wear. resulting of fretting and false Brinelling known to occur in quasi-static assemblies in vibratory environment, at the contact surfaces between balls and rings of the valve bearings it is then necessary to achieve the forces dues to the system vibrations and acting at the bearings connections with the structure. In order to perform a numerical transient analysis of the system dynamics a nonlinear simplified model of the valve is developed. The model includes the stiffness of the preloading springs, the nonlinearity of the bearings stiffness and the nonlinearity due to the possible detachments and impacts between the bearings and the frame of the valve. The input of the models is the induced vibrations by the aircraft engine. The outputs are the relative vibration between the frame of the valve and the shaft charring the butterfly, which corresponds to the relative displacements between the outer and the inner rings of the bearings (the bearings are sited between these two components) and the time behaviour of the forces between the bearings and the frame of the valve.. The model is validated by comparing the numerical results of the relative displacement with experimental results from vibration tests carried out on valve assembly. The time behaviour of the forces and the respective displacements between the contact surfaces, achieved with the presented analysis, will be the inputs for a Finite Element Model developed to reproduce and analyze the local contact constraint

Membrana neovascular asociada a rotura retiniana en el polo posterior

Case report: We present the case of a 75-year-old man who refers visual loss in his left eye. There is a detachment in the posterior pole associated to a retinal break. Ancillary tests allow us to achieve the diagnosis of choroidal neovascular membrane. Discussion: The presence of a retinal break makes the initial diagnosis difficult in this case. Although hemorrhage usually confirms the presence of neovascular membrane activity, in many cases this hemorrhage may be scarce or absent, and only subretinal fluid may be seen.Caso clínico: Varón de 75 años de edad que refiere disminución de agudeza visual en ojo izquierdo. Presenta un levantamiento del polo posterior asociado a una rotura retiniana. Se presentan las pruebas complementarias que permiten llegar al diagnóstico de membrana neovascular coroidea. Discusión: La presencia de una rotura retiniana dificulta el diagnóstico inicial del paciente. Aunque clásicamente se considera que la presencia de hemorragias confirma la actividad de una membrana neovascular, en muchos casos este componente hemorrágico puede ser escaso o incluso estar ausente, siendo el fluido subretiniano el único signo clínico presente

Experimental dynamic substructuring of the ampair wind turbine test bed

In a recent paper, the authors discussed the selection of a reduced set of interface DoFs in order to describe the coupling between the blades and the hub of the Ampair test bed wind turbine rotor. The study was conducted using simulated FRFs obtained from Finite Element model of the blades and the hub, but in view of using experimental FRFs. In this paper, test data measured on the turbine by the UW-Madison participants in the IMAC Focus Group on Experimental Dynamic Substructuring, and posted on the Wiki page of the group, are used for dynamic substructuring of the wind turbine test bed

Inflammaging and Frailty Status Do Not Result in an Increased Extracellular Vesicle Concentration in Circulation

In the last decades extracellular vesicles (EVs) have emerged as key players for intercellular communication. In the case of inflammation, several studies have reported that EV levels are increased in circulation during inflammatory episodes. Based on this, we investigated whether aging results in elevated EV number, as a basal proinflammatory status termed “inflammaging” has been described in aged individuals. Moreover, we also hypothesized that frailty and dependence conditions of the elderly could affect EV concentration in plasma. Results showed that inflammaging, frailty or dependence status do not result in EV increase, at least in the total number of EVs in circulation. These results open a new perspective for investigating the role of EVs in human aging and in the inflammaging process