Engineering of Magnetic Softness and Domain Wall Dynamics of Fe-rich Amorphous Microwires by Stress- induced Magnetic Anisotropy.

We observed a remarkable improvement of domain wall (DW) mobility, DW velocity, giant magnetoimpedance (GMI) effect and magnetic softening at appropriate stress-annealing conditions. Beneficial effect of stress-annealing on GMI effect and DW dynamics is associated with the induced transverse magnetic anisotropy. An improvement of the circumferential permeability in the nearly surface area of metallic nucleus is evidenced from observed magnetic softening and remarkable GMI effect rising. We assumed that the outer domain shell with transverse magnetic anisotropy associated to stress-annealing induced transverse magnetic anisotropy affects the travelling DW in a similar way as application of transversal bias magnetic field allowing enhancement the DW velocity. Observed decreasing of the half-width of the EMF peak in stress-annealed microwires can be associated to the decreasing of the characteristic DW width. Consequently, stress annealing enabled us to design the magnetic anisotropy distribution beneficial for optimization of either GMI effect or DW dynamics.

Tailoring of magnetoimpedance effect and magnetic softness of Fe-rich glass-coated microwires by stress- annealing.

There is a pressing need for improving of the high-frequency magneto-impedance effect of cost-effective soft magnetic materials for use in high-performance sensing devices. The impact of the stress-annealing on magnetic properties and high frequency impedance of Fe-rich glass-coated microwires was studied. Hysteresis loops of Fe-rich microwires have been considerably affected by stress- annealing. In stress-annealed Fe- rich microwire we obtained drastic decreasing of coercivity and change of character of hysteresis loop from rectangular to linear. By controlling stress-annealing conditions (temperature and time) we achieved drastic increasing (by order of magnitude) of giant magnetoimpedance ratio. Coercivity, remanent magnetization, diagonal and of-diagonal magnetoimpedance effect of Fe-rich microwires can be tuned by stress-annealing conditions: annealing temperature and time. Observed experimental results are discussed considering relaxation of internal stresses, compressive "back-stresses" arising after stress annealing and topological short range ordering.

Use of explicit ICD9-CM codes to identify adult severe sepsis: impacts on epidemiological estimates.

BACKGROUND: Severe sepsis is a challenge for healthcare systems, and epidemiological studies are essential to assess its burden and trends. However, there is no consensus on which coding strategy should be used to reliably identify severe sepsis. This study assesses the use of explicit codes to define severe sepsis and the impacts of this on the incidence and in-hospital mortality rates. METHODS: We examined episodes of severe sepsis in adults aged ≥18 years registered in the 2006-2011 national hospital discharge database, identified in an exclusive manner by two ICD-9-CM coding strategies: (1) those assigned explicit ICD-9-CM codes (995.92, 785.52); and (2) those assigned combined ICD-9-CM infection and organ dysfunction codes according to modified Martin criteria. The coding strategies were compared in terms of the populations they defined and their relative implementation. Trends were assessed using Joinpoint regression models and expressed as annual percentage change (APC). RESULTS: Of 222 846 episodes of severe sepsis identified, 138 517 (62.2 %) were assigned explicit codes and 84 329 (37.8 %) combination codes; incidence rates were 60.6 and 36.9 cases per 100 000 inhabitants, respectively. Despite similar demographic characteristics, cases identified by explicit codes involved fewer comorbidities, fewer registered pathogens, greater extent of organ dysfunction (two or more organs affected in 60 % versus 26 % of cases) and higher in-hospital mortality (54.5 % versus 29 %; risk ratio 1.86, 95 % CI 1.83, 1.88). Between 2006 and 2011, explicit codes were increasingly implemented. Standardised incidence rates in this cohort increased over time with an APC of 12.3 % (95 % CI 4.4, 20.8); in the combination code cohort, rates increased by 3.8 % (95 % CI 1.3, 6.3). A decreasing trend in mortality was observed in both cohorts though the APC was -8.1 % (95 % CI -10.4, -5.7) in the combination code cohort and -3.5 % (95 % CI -3.9, -3.2) in the explicit code cohort. CONCLUSIONS: Our findings suggest greater and increasing use of explicit codes for adult severe sepsis in Spain. This trend will have substantial impacts on epidemiological estimates, because these codes capture cases featuring greater organ dysfunction and in-hospital mortality.

Marine protected area design patterns in the Mediterranean Sea: Implications for conservation.

Mediterranean marine protected area (MPA) design patterns regarding geographic distribution, size, spacing and shape were analysed as a proxy of the region's MPA's ecological effectiveness and a first step towards an ecologically coherent MPA network. Results for legally designated MPAs and ecologically functional MPAs accounting for overlaps are presented. Geographically, Mediterranean MPA area is very unevenly distributed, with four-fifths concentrated in just three countries of the north-western part of the basin. Average distance between functional MPAs lies within recommended ecological thresholds, which suggests adequate potential connectivity of the Mediterranean MPA system. Mediterranean designated MPAs are larger than MPAs worldwide on average, although they are generally smaller than international guidance suggests at different levels: ecoregion, country and designation category. On average, Mediterranean designated and functional MPAs have relatively high compactness, which makes them prone to spillover and adequate viability, and less vulnerable to edge effects.

Characteristics, incidence and temporal trends of sepsis in elderly patients undergoing surgery.

BACKGROUND: Despite increasing rates of surgery in the elderly, there is limited population-based information on sepsis in this age group. This study aimed to characterize the epidemiology and national trends of sepsis among elderly patients undergoing surgery in Spain. METHODS: This population-based longitudinal study of patients aged 65 years or older, undergoing surgery between 2006 and 2011, used data from the national hospital discharge database. Patients were identified by ICD coding. Primary endpoints were incidence and case-fatality rates of sepsis. Predefined age groups were examined. In-hospital mortality-related factors were assessed by means of exploratory logistic regression. Trends were assessed for annual percentage change in rates using Joinpoint regression analysis. RESULTS: A total of 44 342 episodes of sepsis were identified, representing 1·5 per cent of all 2 871 199 surgical hospital admissions of patients aged 65 years or older. The rates varied with age and sex. The in-hospital case-fatality rate was 43·9 per cent (19 482 patients), and associated with age, co-morbidity and organ dysfunction. Standardized rates of sepsis increased over time, with an annual change of 4·7 (95 per cent c.i. 1·4 to 8·5) per cent, whereas the case-fatality rate declined, with an overall annual change of -3·6 (-4·3 to -2·8) per cent. The decrease in mortality was more limited in patients with organ dysfunction and in the oldest age group. CONCLUSION: Rates of sepsis are increasing among elderly patients undergoing surgery, whereas in-hospital case fatality, although common, is showing a decreasing trend.

Biological characterization of the skin of shortfin mako shark Isurus oxyrinchus and preliminary study of the hydrodynamic behaviour through computational fluid dynamics.

This study characterized the morphology, density and orientation of the dermal denticles along the body of a shortfin mako shark Isurus oxyrinchus and identified the hydrodynamic parameters of its body through a computational fluid-dynamics model. The study showed a great variability in the morphology, size, shape, orientation and density of dermal denticles along the body of I. oxyrinchus. There was a significant higher density in dorsal and ventral areas of the body and their highest angular deviations were found in the lower part of the mouth and in the areas between the pre-caudal pit and the second dorsal and pelvic fins. A detailed three-dimensional geometry from a scanned body of a shark was carried out to evaluate the hydrodynamic properties such as drag coefficient, lift coefficient and superficial (skin) friction coefficient of the skin together with flow velocity field, according to different roughness coefficients simulating the effect of the dermal denticles. This preliminary approach contributed to detailed information of the denticle interactions. As the height of the denticles was increased, flow velocity and the effect of lift decreased whereas drag increased. The highest peaks of skin friction coefficient were observed around the pectoral fins.

Magnetoelastic contribution in domain wall propagation of micrometric wires.

We report on studies of domain wall propagation of magnetically-bistable Fe-Co-rich microwires paying attention on the effect of applied and internal stresses. We measured magnetic domain propagation in various magnetic Fe-Co-rich amorphous microwires with metallic nucleus diameters (from 2.8 microm to 18 microm) using Sixtus Tonks-like experiments. We found that application of applied stresses and increasing of internal stresses result in decreasing of domain wall (DW) velocity. We assume that in order to achieve higher DW propagation velocity at the same magnetic field and enhanced DW mobility, special attention should be paid to the decrease of magnetoelastic energy.

Implementing artificial insemination as an effective tool for ex situ conservation of endangered avian species.

Approximately 503 of the known species of birds are classified as 'endangered' or 'critical'. Captive propagation programs have proven useful in maintaining genetic diversity and restoring wild populations of certain species, including the Peregrine falcon, California condor and Whooping crane. Artificial insemination (AI) has the potential of solving problems inherent to reproductive management of small, closed populations of endangered birds, including dealing with demographic instability, physical and behavioral disabilities, sexual incompatibility, lack of synchrony, and need to maintain gene diversity. In this review, we address the necessary methods and factors that allow AI to be applied effectively to manage rare bird populations. It is clear that semen availability and quality are the greatest limiting factors to implementing consistently successful AI for birds. Behavioral sensitivity to animal handling and the ability to minimize stress in individual birds also are keys to success. Multiple, deep vaginal inseminations can improve fertility, particularly when semen quality is marginal. Laparoscopic methods of semen transfer also have produced fertile eggs. All of these practices leading to successful AI remain dependent on having adequate basic knowledge on female reproductive status, copulatory behavior, endocrine profiles and duration of fertility, especially as related to oviposition. The overall greatest challenge and highest priority is defining these normative traits, which are highly species-specific.

Pancreatitis aguda hidatídica / No disponible

No disponible

Influence of antiretroviral treatment on quality of life in seropositive inmates.

The aim of the study is to evaluate the influence of antiretroviral treatment on health-related quality of life (HRQOL) of three groups of HIV-positive inmates: those who are taking antiretroviral treatment, those who are not on treatment as it has not yet been indicated, and those who refuse to take treatment even though it has been recommended. A cross-sectional study was conducted on 585 HIV+ inmates in three prisons. The response variable was HRQOL. Independent variables were: sociodemographic variables, psychosocial and drug-related variables. Two multivariate linear regression models were constructed in order to determine the HRQOL, physical health score (PHS) and mental health score (MHS), for each of the three groups identified, using patients who refused treatment as the reference category. Patients who refused therapy had a lower MHS compared with patients in whom treatment was not indicated (P = 0.038). With regard to PHS, patients refusing therapy had a lower score than patients who were not indicated therapy (P = 0.005), and than patients receiving therapy (P = 0.010).

[Patients who refuse antiretroviral treatment in prison]. / Pacientes que rehúsan el tratamiento antirretroviral en el medio penitenciario.

INTRODUCTION: Current studies of HIV+ patients in the prison population have been carried out without considering differences that might exist between patients who accept retroviral treatment and those who do not. One possible reason for this may be the difficulty in gaining access to patients who refuse antiretroviral treatment. However, the prison environment makes it possible to locate and study this type of patient, who up till now has not been the subject of study. The aim of this article is to describe the clinical and psychosocial state of HIV+ inmates who refuse ARVT and compare this data with patients receiving treatment and others for whom treatment has not been indicated. METHODS: Cross-sectional study using 585 HIV+ inmates in three prisons in Andalusia from May to June 2004. Refusal, acceptance and non-indication of ARVT treatment was the grouping variable used. The independent variables were socio-demographic, psychosocial, clinical and other variables relating to the prison environment. RESULTS: 16.8% of patients refused ARVT, while 56.3% were receiving treatment and another 26.8 were not indicated for any medication. Amongst the patients that refused ARVT there was a greater prevalence of HIV co-infection, higher inprison consumption of opiates and methadone treatment, more cases pending and higher rates of recidivism. CONCLUSIONS: these results highlight the existence of a group with unique characteristics that is accessible thanks to the special conditions within the prison environment. It is a group that chooses not to follow therapeutic indications and which represents a risk factor not only for its own health, but also for the community at large.

Pacientes que rehúsan el tratamiento antirretroviralen el medio penitenciario / Patients who refuse antiretroviral treatment in prison

Introducción: En los estudios existentes sobre pacientes VIH+ la población a estudio ha sido tomada de manera homogénea,sin diferenciar aquella que cumple los requerimientos terapéuticos de la que no lo hace. Quizás por la dificultad en elacceso al grupo de pacientes que rehúsan el tratamiento antirretroviral. El medio penitenciario nos permite acceder a esta población,hasta hoy no estudiada. El objetivo de este estudio es describir el estado clínico y psicosocial de los reclusos seropositivosque rehúsan el TARV, comparándolo con el de aquellos que sí están en TARV o no se les indica tomarlo.Métodos: Estudio transversal con 585 reclusos VIH positivos ingresados en tres prisiones andaluzas entre mayo-juliode 2004. Como variable de agrupación se empleó rehusar el TARV, tomarlo o no hacerlo por no estar indicado. Como independientesse incluyeron sociodemográficas, psicosociales, clínicas y relacionadas con el medio penitenciario.Resultados: El 16,8% de los reclusos rehusaban el TARV, mientras el 56,3% estaban en tratamiento y al 26,8% no le estabaindicado. Entre los reclusos que rehusaban el TARV aparece una mayor prevalencia de coinfección por VHC, mayorconsumo intrapenitenciario de opiáceos y tratamiento con metadona, más juicios pendientes y más entradas en prisión.Conclusiones: Estos resultados ponen de relieve la existencia de un grupo poblacional, accesible gracias al medio penitenciario,con características propias que no sigue las indicaciones terapéuticas y que representa un riesgo no sólo para su salud, sino para la de la comunidad (AU)

Introduction: Current studies of HIV+ patients in the prison population have been carried out without considering differencesthat might exist between patients who accept retroviral treatment and those who do not. One possible reason forthis may be the difficulty in gaining access to patients who refuse antiretroviral treatment. However, the prison environmentmakes it possible to locate and study this type of patient, who up till now has not been the subject of study. The aim of thisarticle is to describe the clinical and psychosocial state of HIV+ inmates who refuse ARVT and compare this data with patientsreceiving treatment and others for whom treatment has not been indicated.Methods: Cross-sectional study using 585 HIV+ inmates in three prisons in Andalusia from May to June 2004. Refusal,acceptance and non-indication of ARVT treatment was the grouping variable used. The independent variables were socio-demographic, psychosocial, clinical and other variables relating to the prison environment.Results: 16.8% of patients refused ARVT, while 56.3% were receiving treatment and another 26.8 were not indicated (AU)

[Progress of clinical parameters amongst prison inmates receiving antiretroviral treatment]. / Evolución de los parámetros clínicos en reclusos en tratamiento antirretroviral.

INTRODUCTION: Among HIV positive patients the CD4 lymphocyte count, especially the viral load, are the best predictors for progress to full blown AIDS or death. OBJECTIVE: To analyze the factors associated with progress of the CD4 lymphocyte count and viral load in prison inmates in antiretroviral treatment. METHODS: A fixed cohort study was conducted with HIV positive inmates receiving antiretroviral therapy in three Spanish prisons. Adherence to antiretroviral treatment was assessed with the SMAQ questionnaire. To analyze the progress of CD4 and viral load clinical parameters, two fixed effect multilevel linear regression models were utilised. RESULTS: 10% of the sample were women, 42% referred for anxiety or symptoms of depression in the final week, and 46.6% reported having social support inside the prison. CD4 and viral load clinical parameter means were 2.48 and 2.89 respectively, and 38.6% had an undetectable viral load. A negative correlation between viral load and CD4 lymphocyte count (p<0.001) was found. Those inmates who did not present psychological morbidity showed a significant reduction in plasma viral load (p=0.017). CONCLUSIONS: The results of this study show the relevance of psychosocial factors in the immune system.

Evolución de los parámetros clínicos en reclusos en tratamiento antirretroviral / Progress of clinical parameters amongst prison inmates receiving antiretroviral treatment

Introducción: Entre los pacientes infectados por el VIH el recuento linfocitario y fundamentalmente la carga viral, sonlos mejores predictores al estado definitorio de SIDA o muerte. Objetivo: analizar los factores asociados a la evolución delrecuento de linfocitos CD4 y carga viral en reclusos en tratamiento con antirretrovirales. Métodos: Se realizó un estudio decohorte fija a reclusos VIH positivos en tratamiento con antirretrovirales de tres prisiones españolas. La adherencia al tratamientoantirretroviral se midió a través del cuestionario SMAQ. Para analizar la evolución de los parámetros clínicos de CD4y carga viral se realizaron dos modelos de regresión lineal multinivel de efectos fijos. Resultados: El 10% eran mujeres, el42% refirió padecer ansiedad o depresión en la última semana y el 46,6% refirió tener apoyo social dentro de la prisión. Encuanto a la media de los parámetros clínicos de log10 CD4 y log10 carga viral fueron de 2,48 y 2,89 respectivamente, teniendoel 38,6% carga viral indetectable. Se encontró una relación inversa entre la carga viral y el recuento de linfocitos CD4(p<0,001). En cuanto a la carga viral plasmática aquellos reclusos sin morbilidad psíquica mostraron una reducción significativa (p=0,017) de la misma. Conclusiones: se pone de manifiesto la importancia de los factores psicosociales en el sistema inmunitario (AU)

Introduction: Among HIV positive patients the CD4 lymphocyte count, especially the viral load, are the best predictorsfor progress to full blown AIDS or death. Objective: To analyze the factors associated with progress of the CD4lymphocyte count and viral load in prison inmates in antiretroviral treatment. Methods: A fixed cohort study was conductedwith HIV positive inmates receiving antiretroviral therapy in three Spanish prisons. Adherence to antiretroviral treatmentwas assessed with the SMAQ questionnaire. To analyze the progress of CD4 and viral load clinical parameters, two fixedeffect multilevel linear regression models were utilised. Results: 10% of the sample were women, 42% referred for anxietyor symptoms of depression in the final week, and 46.6% reported having social support inside the prison. CD4 andviral load clinical parameter means were 2.48 and 2.89 respectively, and 38.6% had an undetectable viral load. A negative correlationbetween viral load and CD4 lymphocyte count (p<0.001) was found. Those inmates who did not present psychologicalmorbidity showed a significant reduction in plasma viral load (p=0.017). Conclusions: The results of this study showthe relevance of psychosocial factors in the immune system (AU)

Role of d electrons in Auger neutralization at metal surfaces.

A generalized theory of Auger electron transfer processes in the interaction of ions with metal surfaces, including the previously ignored role of d electrons is presented. It is shown that a correct and accurate description of Auger neutralization has to account for the contribution of d electrons, as this is illustrated on the case of He+ ion neutralization on Ag, where the neglect of these leads to a strong overestimation of ion survival probabilities. Crystal lattice site specific rates are calculated and allow for a correct description of crystal azimuthal effects in neutralization.

[Pathology related to altitude: the experience on K2]. / Patología derivada de la altura: experiencia en el K2.

The pathology related with the altitude is a common entity above 3000 m. It includes mild symptoms to severe illness such as cerebral or pulmonary edema. Cold-induced injuries may produce permanent tissue loss and surgical amputation. Recognition is made mainly through symptoms. Adequate treatment of these patients allows for rapid resolution of the symptoms and improves outcome.