The efficacy of treatment with nifurtimox and/or benznidazole among adults chronic Chagas disease no previous electrocardiographic disturbances was evaluated over a mean follow-up 21 years, by means conventional serology, xenodiagnosis, clinical examination, electrocardiograms and chest X-ray. One hundred eleven patients, between 17 46 years old, were studied: 54 underwent (nifurtimox 27, 27) 57 remained untreated (control group). Xenodiagnosis performed on 65% them: 36/38 the treated 9/34...

The aim of this work was to compare the evolution chronic chagasic untreated patients (UTPs) with that benznidazole or nifurtimox-treated (TPs). A longitudinal study from a low endemic area (Santa Fe city, Argentina) performed during an average period 14 years. Serological and parasitological analyses clinical exams, ECG X-chest ray were carried out. At onset, 19/198 infected showed cardiomyopathy (CrChM) while 179 asymptomatic. In latter group frequency CrChM follow-up lower in TPs compared...

We investigate the low energy continuum limit theory for electrons in a graphene sheet under strain. use quantum field curved spaces to analyze effect of system deformations into an effective gauge field. study both in-plane and out-of-plane obtain closed expression due arbitrary nonuniform deformations. The obtained results reveal remarkable relation between local-pseudo magnetic Riemann curvature, so far overlooked.

As the weight of adult population continues to increase, bariatric surgery has emerged as best available treatment achieve lasting and significant loss. However, with all medical procedures, post-operative complications can will continue occur. Among those rare Roux-en-Y gastric bypass is necrosis remnant, a severe near-fatal complication that be deadly if left untreated. Prompt treatment, surgical therapy, close follow are critical in patients. We present case 37-year-old woman who...

A bstract We analyze the entanglement generation in a pair of qubits that experience vacuum fluctuations scalar field Cosmic String spacetime. The are modeled as Unruh-DeWitt detectors coupled to massless field. introduce Heisenberg XY -interaction between enhances quantum correlations. It is supposed begin at general mixed state described by density operator with no while stays its state. In this way, we find properties and conditions create exploiting fluctuations. quantify using...

Abstract In this article, we present an experimental pedagogical proposal for the study of material strength. Our objective is to experimentally obtain deflection curves by proposing analysis images using free software GeoGebra as a method obtaining data. We will apply our methodology beam under two conditions. First, analyze cantilever action transverse load that causes bending, and then proposed technique case subjected opposing forces cause buckling. The article design portable low-cost...

Clinical and epidemiological results of 95 treated untreated chronic chagasic children, with an up to 24 years follow-up period are presented. This population studied in the 1/14 age bracket, residing Santa Fe city, Argentina, was diagnosed through Chagas-specific conventional serologic reactions. examination supplemented electrocardiogram, chest X-rays, blood urine tests for evaluating hepatic function. The drugs employed were nifurtimox or benznidazole. In post treatment xenodiagnosis made...

This work compared the time at which negative seroconversion was detected by conventional serology (CS) and ELISA-F29 test on a cohort of chronic chagasic patients treated with nifurtimox or benznidazole. A retrospective study performed using preserved serum from 66 asymptomatic adults under clinical supervision, bi-annual serological examinations over mean follow-up 23 years. Twenty nine received trypanocide treatment 37 remained untreated. The used recombinant antigen obtained expressing...

We analyze radiative processes of a quantum system composed by two identical two-level atoms interacting with massless scalar field prepared in the vacuum state presence perfect reflecting flat mirrors. consider that are stationary maximally entangled state. investigate spontaneous transitions rates from states to collective ground induced fluctuations. In empty-space case, decay can be enhanced or inhibited depending on specific and changes distance between atoms. Next, we mirrors impose...

A free massive scalar field in inhomogeneous random media is investigated. The coefficients of the Klein-Gordon equation are taken to be functions spatial coordinates. case a disordered medium modeled by centered stationary and Gaussian processes analyzed. After performing averages over functions, we obtain two-point four-point Green's model up one loop. quantum theory becomes qualitatively similar $\ensuremath{\lambda}{\ensuremath{\varphi}}^{4}$ self-interacting with frequency-dependent coupling.

We consider a pointlike two-level system undergoing uniformly accelerated motion. evaluate the transition probability for finite time interval of this coupled to massless scalar field near fluctuating event horizon. Horizon fluctuations are modeled using random noise which generates light-cone fluctuations. study case centered, stationary and Gaussian processes. The is obtained from positive-frequency Wightman function calculated one loop order in averaging process. Our results show that...

We introduce a quantum heat engine performing an Otto cycle by using the thermal properties of vacuum. Since Hawking and Unruh, it has been established that vacuum space, either near black hole or for accelerated observer, behaves as bath radiation. In this work, we present fully cycle, which relies on Unruh effect single bit (qubit) in contact with fluctuations. By notions thermodynamics perturbation theory obtain can exchange produce work qubit. Moreover, efficiency derive conditions to...

We study the effects of light-cone fluctuations on renormalized zero-point energy associated with a free massless scalar field in presence boundaries. In order to simulate we introduce space-time dependent random coefficient Klein-Gordon operator. assume that is defined domain one confined direction. For simplicity, choose symmetric case two parallel plates separated by distance $a$. The correction vacuum density between goes as $1/a^{8}$ instead usual $1/a^{4}$ dependence for case. turn...

A transversal study was performed on sera from chronic chagasic patients treated with nifurtimox (Nx) or benznidazole (Bz), in order to evaluate the Trypanosoma cruzi flagellar calcium-binding protein (F29) as a marker for therapeutic effectiveness.An ELISA used these F29 recombinant antigen, and its relation conventional serology (CS) parasitological clinical evolution analysed.Sera 118 retrospective, serological, information available, were analyzed.Patients grouped into: A) 30 whose CS...

La enfermedad de Chagas, producida por el Trypanosoma cruzi y transmitida un insecto triatomino, es gran complejidad. En control esta endemia no puede considerarse la como hecho individual y solo biologico. Entre sus multiples componentes debe considerarse relacion los sujetos con habitat, los modos produccion, las condiciones culturales, las relaciones sociales formas organizativas.Como profesionales del campo salud intentamos nuevos enfoques que integran diferentes miradas disciplinares y...

We analyze the Casimir-Lifshitz effect associated with electromagnetic field in presence of a rectangular waveguide consisting two distinct dielectric materials (3 + 1)-dimensional spacetime. employ surface mode technique to derive generalized Lifshitz formula for this specific geometry. Our formulation accounts unique properties composing waveguide, leading precise calculation energy. In asymptotic limit, our results recover classical expressions perfect reflecting boundaries. The behavior...

We analyze the Casimir-Lifshitz effect associated with electromagnetic field in presence of a rectangular waveguide consisting two distinct dielectric materials (3 + 1)-dimensional spacetime.We employ surface mode technique to derive generalized Lifshitz formula for this specific geometry.Our formulation accounts unique properties composing waveguide, leading precise calculation energy.In asymptotic limit, our results recover classical expressions perfect reflecting boundaries.This work...

We consider the sound radiation from an acoustic point-like source moving along a supersonic ("space-like") trajectory in fluid at rest. call it "tachyonic" source. describe emitted by this After quantizing perturbations, we present distribution of phonons generated classical tachyonic and wave interference pattern.

We discuss the vacuum energy of a quantized scalar field in presence classical surfaces, defining bounded domains $\mathrm{\ensuremath{\Omega}}\ensuremath{\subset}{\mathbb{R}}^{d}$, where satisfies ideal or nonideal boundary conditions. call it high-pass Dirichlet For electromagnetic case, this situation describes conductivity correction to zero-point energy. Using an analytic regularization procedure, we obtain for massless at zero temperature slab geometry...