Sistema para la aplicación de los datos de la misión satelital SAOCOM en la agricultura

Se presenta el desarrollo e implementación de un sistema orientado a la agricultura que agrega más valor a las observaciones de humedad de suelo superficial recuperadas desde las plataformas SAOCOM mediante la asimilación de estos datos en modelos de cultivos. Un Sistema de Información Geográfica reúne los datos locales de registros meteorológicos y de propiedades de los suelos, y los moldea según los requerimientos de aquellos. Con un mismo núcleo de procesamiento se elaboran dos tipos de productos. Un procesamiento en lote por Zonas Homogéneas genera perfiles de humedad de suelo que cubren toda la Región Pampeana. Una aplicación Web habilita a los usuarios a ejecutar procesamientos en línea para simular escenarios de rinde sobre sus parcelas considerando sus preferencias para el manejo de los cultivos. Se presentan ejemplos de productos elaborados bajo ambos tipos de procesamiento.Sociedad Argentina de Informática e Investigación Operativ

Sistema para la aplicación de los datos de la misión satelital SAOCOM en la agricultura

Se presenta el desarrollo e implementación de un sistema orientado a la agricultura que agrega más valor a las observaciones de humedad de suelo superficial recuperadas desde las plataformas SAOCOM mediante la asimilación de estos datos en modelos de cultivos. Un Sistema de Información Geográfica reúne los datos locales de registros meteorológicos y de propiedades de los suelos, y los moldea según los requerimientos de aquellos. Con un mismo núcleo de procesamiento se elaboran dos tipos de productos. Un procesamiento en lote por Zonas Homogéneas genera perfiles de humedad de suelo que cubren toda la Región Pampeana. Una aplicación Web habilita a los usuarios a ejecutar procesamientos en línea para simular escenarios de rinde sobre sus parcelas considerando sus preferencias para el manejo de los cultivos. Se presentan ejemplos de productos elaborados bajo ambos tipos de procesamiento.Sociedad Argentina de Informática e Investigación Operativ

Sistema para la aplicación de los datos de la misión satelital SAOCOM en la agricultura

Se presenta el desarrollo e implementación de un sistema orientado a la agricultura que agrega más valor a las observaciones de humedad de suelo superficial recuperadas desde las plataformas SAOCOM mediante la asimilación de estos datos en modelos de cultivos. Un Sistema de Información Geográfica reúne los datos locales de registros meteorológicos y de propiedades de los suelos, y los moldea según los requerimientos de aquellos. Con un mismo núcleo de procesamiento se elaboran dos tipos de productos. Un procesamiento en lote por Zonas Homogéneas genera perfiles de humedad de suelo que cubren toda la Región Pampeana. Una aplicación Web habilita a los usuarios a ejecutar procesamientos en línea para simular escenarios de rinde sobre sus parcelas considerando sus preferencias para el manejo de los cultivos. Se presentan ejemplos de productos elaborados bajo ambos tipos de procesamiento.Sociedad Argentina de Informática e Investigación Operativ

Static properties of the dissipative random quantum Ising ferromagnetic chain

We study the zero temperature static properties of dissipative ensembles of quantum Ising spins arranged on periodic one dimensional finite clusters and on an infinite chain. The spins interact ferro-magnetically with nearest-neighbour pure and random couplings. They are subject to a transverse field and coupled to an Ohmic bath of quantum harmonic oscillators. We analyze the coupled system using Monte Carlo simulations of the classical two-dimensional counterpart model. The coupling to the bath enhances the extent of the ordered phase, as found in mean-field spin-glasses. In the case of finite clusters we show that a generalization of the Caldeira-Leggett localization transition exists. In the case of the infinite random chain we study the effect of dissipation on the transition and the Griffiths phase.Comment: 21 pages, 10 figure

Memory effects in classical and quantum mean-field disordered models

We apply the Kovacs experimental protocol to classical and quantum p-spin models. We show that these models have memory effects as those observed experimentally in super-cooled polymer melts. We discuss our results in connection to other classical models that capture memory effects. We propose that a similar protocol applied to quantum glassy systems might be useful to understand their dynamics.Comment: 24 pages, 12 figure

Masseteric-facial nerve neurorrhaphy: results of a case series

OBJECTIVE: Facial palsy is a well-known functional and esthetic problem that bothers most patients and affects their social relationships. When the time between the onset of paralysis and patient presentation is less than 18 months and the proximal stump of the injured facial nerve is not available, another nerve must be anastomosed to the facial nerve to reactivate its function. The masseteric nerve has recently gained popularity over the classic hypoglossus nerve as a new motor source because of its lower associated morbidity rate and the relative ease with which the patient can activate it. The aim of this work was to evaluate the effectiveness of masseteric-facial nerve neurorrhaphy for early facial reanimation. METHODS: Thirty-four consecutive patients (21 females, 13 males) with early unilateral facial paralysis underwent masseteric-facial nerve neurorrhaphy in which an interpositional nerve graft of the great auricular or sural nerve was placed. The time between the onset of paralysis and surgery ranged from 2 to 18 months (mean 13.3 months). Electromyography revealed mimetic muscle fibrillations in all the patients. Before surgery, all patients had House-Brackmann Grade VI facial nerve dysfunction. Twelve months after the onset of postoperative facial nerve reactivation, each patient underwent a clinical examination using the modified House-Brackmann grading scale as a guide. RESULTS: Overall, 91.2% of the patients experienced facial nerve function reactivation. Facial recovery began within 2-12 months (mean 6.3 months) with the restoration of facial symmetry at rest. According to the modified House-Brackmann grading scale, 5.9% of the patients had Grade I function, 61.8% Grade II, 20.6% Grade III, 2.9% Grade V, and 8.8% Grade VI. The morbidity rate was low; none of the patients could feel the loss of masseteric nerve function. There were only a few complications, including 1 case of postoperative bleeding (2.9%) and 2 local infections (5.9%), and a few patients complained about partial loss of sensitivity of the earlobe or a small area of the ankle and foot, depending on whether great auricular or sural nerves were harvested. CONCLUSIONS: The surgical technique described here seems to be efficient for the early treatment of facial paralysis and results in very little morbidity

Effects of dissipation on disordered quantum spin models

We study the effects of the coupling to an Ohmic quantum reservoir on the static and dynamical properties of a family of disordered SU(2) spin models in a transverse magnetic field using a method of direct spin summation. The tendency to form a glassy phase increases with the strength of the coupling of the system to the environment. We study the influence of the environment on the features of the phase diagram of the various models as well as the stability of the possible phases.Comment: 24 pages, 8 fig

Orbital medial wall fractures: Purely endoscopic endonasal repair with polyethylene implants

Our technique couples the stronger support granted by non-resorbable materials and the minimal invasiveness of the endoscopic approach without the need for long-term nasal packing

Investigation of heat management for CLC of syngas in packed bed reactors

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Sustained impairment of human cytomegalovirus (HCMV)-specific CD4+ and CD8+ T cell response is responsible for recurrent episodes of disseminated HCMV infection in a D+R- hand transplant recipient

Human cytomegalovirus (HCMV) infection is the major viral complication in solid organ transplant recipients. Seronegative recipents (R-) of organs from seropositive donors (D+) appear to be at higher risk of developing symptomatic HCMV infection. To what extent systemic life-threatening complications can be risked for non-life-saving transplant procedures? A case report describing successful treatment of repeated episodes of active HCMV infection in a D+R- hand recipient in the absence of HCMV-specific T-cell immunity is presented. In the attempt to save both the patient and the transplanted hand, a preemptive treatment strategy was adopted with the aim to boost the constitution of the virus-specific T-cell immune response and simultaneously avoid onset of disease. Careful monitoring of HCMV load in blood and HCMV-specific T-cell immunity guided administration of repeated courses of antiviral treatment and avoided emergence of HCMV-related symptoms. Following establishment of HCMV-specific CD4+ and CD8+ T-cell response, preemptive treatment was no longer required due to sustained HCMV disappearance from blood. The patient is now well, and his hand too. In conclusion, evaluation of virus-specific T-cell immunity is of crucial importance in D+R- transplant recipients and careful monitoring of HCMV-specific T cell mediated response should always parallel monitoring of HCMV load in transplant recipients