Flavor and TASTE attributes and nutritional insights of maize tortillas from landraces of Mexican races.

Maize tortilla is the best-recognized food product of Mexican gastronomy. Artisanal maize tortillas (AMT) are prepared with native maize varieties and a traditional process. The aims of this study were to identify sensory attributes, texture, and color in AMT that allow them to be differentiated from commercial tortillas, and to determine the chemical and mineral composition of both types of tortillas. Six landraces related to four Mexican maize races were used. Two commercial tortillas were included as references (tortillería and supermarket). Tortillas were subjected to sensory analysis by the modified Flash technique, texture and color were measured objectively and chemical and mineral analysis of all tortillas were evaluated. Lime taste and lime smell attributes were relevant to differentiate AMT from commercial tortillas; aftertaste and fracturability attributes were highly associated to supermarket tortillas. The fracturability attribute of tortillas is consider undesirable for taco preparation. Five of the six AMT were characterized by the presence of a layer, a characteristic that is associated with traditional tortilla made by Mexican consumer. Regarding chemical composition, supermarket tortillas exhibited the highest dietary fiber content (17.09%), but showed 30% more Na than AMT, with the exception of tortillas from Purepecha native variety. Besides, supermarket tortilla had 48.9% less Ca than AMT. The sensory attributes relevant to differentiate native maize tortillas from the commercial maize tortilla references were appearance, smell, and taste, while textural and color attributes played a lesser role.

Persistent inflammation, immunosuppression and catabolism syndrome (PICS) in critically ill children is associated with clinical outcomes: a prospective longitudinal study.

BACKGROUND: Persistent inflammation, immunosuppression and catabolism syndrome (PICS) has been described in critically ill adults and may contribute to unfavourable outcomes. The present study aimed to describe and characterise PICS in critically ill children (PICS-ped) and to verify its association with clinical outcomes. METHODS: A prospective longitudinal study was conducted in a paediatric intensive care unit (PICU) with children aged between 3 months and 15 years. PICS-ped, based on adult definition, was described. PICS-ped was defined as PICU length of stay >14 days; C-reactive protein > 10.0 mg L-1 ; lymphocytes <25%; and any reduction of mid-upper arm circumference Z-score. Clinical, demographic, nutritional status, nutrition therapy parameters and clinical outcomes were assessed. Statistical analysis comprised Mann-Whitney and Fisher's chi-squared tests, as well as logistic and Cox regression. P < 0.05 was considered statistically significant. RESULTS: In total, 153 children were included, with a median age of 51.7 months (interquartile range 15.6-123.4 months), and 60.8% male. The mortality rate was 10.5%. The prevalence of PICS-ped was 4.6%. Days using vasoactive drugs and days using antibiotics were associated with PICS-ped. PICS-ped was associated with mortality in crude (odds ratio = 6.67; P = 0.013) and adjusted analysis (odds ratio = 7.14; P = 0.017). PICS-ped was also associated with PICU and hospital length of stay, as well as duration of mechanical ventilation. Similar results were found in a subset of critically ill children who required mechanical ventilation for more than 48 h. CONCLUSIONS: Children with PICS-ped required antibiotics or vasoactive drugs for a longer period. PICS-ped was associated with poor clinical outcomes in critically ill children. More studies are needed to properly define PICS-ped for this population.

Study of the heavily p-type doping of cubic GaN with Mg.

We have studied the Mg doping of cubic GaN grown by plasma-assisted Molecular Beam Epitaxy (PA-MBE) over GaAs (001) substrates. In particular, we concentrated on conditions to obtain heavy p-type doping to achieve low resistance films which can be used in bipolar devices. We simulated the Mg-doped GaN transport properties by density functional theory (DFT) to compare with the experimental data. Mg-doped GaN cubic epitaxial layers grown under optimized conditions show a free hole carrier concentration with a maximum value of 6 × 1019 cm-3 and mobility of 3 cm2/Vs. Deep level transient spectroscopy shows the presence of a trap with an activation energy of 114 meV presumably associated with nitrogen vacancies, which could be the cause for the observed self-compensation behavior in heavily Mg-doped GaN involving Mg-VN complexes. Furthermore, valence band analysis by X-ray photoelectron spectroscopy and photoluminescence spectroscopy revealed an Mg ionization energy of about 100 meV, which agrees quite well with the value of 99.6 meV obtained by DFT. Our results show that the cubic phase is a suitable alternative to generate a high free hole carrier concentration for GaN.

In silico analysis of antidiabetic potential of phenolic compounds from blue corn (Zea mays L.) and black bean (Phaseolus vulgaris L.).

The growing interest in bioactive compounds, especially in polyphenols, is due to their abundance in the human diet and potentially positive effects on health. The consumption of polyphenols has been shown to possess anti-diabetic properties by preventing insulin resistance or insulin secretion through different signaling pathways, this effect is associated with their capacity to exert genomic modulations. Several studies have suggested that polyphenols could also bind to cellular proteins and modulate their activity, however, the mechanisms of action underlying their beneficial effects are complex and are not fully understood. The aim of this work was to characterize phenolic compounds present in blue corn and black bean extracts as well as identify their potential interactions with target proteins involved in diabetes pathogenesis using in silico approach. Total polyphenols content of both blue corn and black beans was identified using UPLC-ESI/qTOF/MS and quantified by colorimetric assays. In this work we identified twenty-eight phenolic compounds in the extracts, mainly anthocyanins, flavonols, hydroxycinamic acids, dihydroxybenzoic acids, flavones, isoflavones, and flavanols. Interactome of these compounds with thirteen target proteins involved in type 2 diabetes mellitus was performed in-silico. In total, 312 bioactive compounds/protein interaction analyses were acquired. Molecular docking results highlighted that nine of the top ten interactions correspond to anthocyanins, cyanidin 3-glucoside with 11ß-HS, GFAT, PPARG; delphinidin 3-glucoside with 11ß-HS, GFAT, PTP and RTKs; and petunidin 3-glucoside with 11ß-HS and PTP. These proteins are involved in mechanisms regulating functions such as inflammation, insulin resistance, oxidative stress, glucose and lipid metabolism. In conclusion, this work provides a prediction of the potential molecular mechanism of black bean and blue corn polyphenols, specifically anthocyanins and could constitute new pathways by which compounds exert their antidiabetic benefits.

Added sugar and trans fatty acid intake and sedentary behavior were associated with excess total-body and central adiposity in children and adolescents with congenital heart disease.

BACKGROUND: Over the past three decades, the prevalence rate of overweight and obesity has increased in survivors with congenital heart disease, and little is known about the body composition and its association with clinical characteristics and lifestyle factors. OBJECTIVES: To evaluate excess total-body adiposity and central adiposity and, to describe associated factors. METHODS: Cross-sectional study with children and adolescents who underwent procedure to treat congenital heart disease, from January to July 2017. Sociodemographic and clinical characteristics, and lifestyle factors (dietary intake, physical activity, and sedentary behavior) were assessed. Adiposity was assessed using air-displacement plethysmography and waist circumference. Factors associated with excess total-body adiposity and central adiposity were analyzed using logistic regression models. RESULTS: Of 232 patients, 22.4% were identified with excess total-body adiposity and 24.6% with central adiposity. Significant factors positively associated with excess total-body adiposity were intake of added sugar and trans fatty acids, adjusted for confounding factors. Similarly, lifestyle factors were positively associated with central adiposity: intake of added sugar and trans fatty acids, sedentary behavior, and family history of obesity. CONCLUSIONS: Lifestyle factors were associated with excess total-body adiposity and central adiposity. Assessment of body composition and healthy-lifestyle counseling into outpatient care may be the key point to prevent obesity in children and adolescents with congenital heart disease.

Growth Mechanism and Properties of Self-Assembled InN Nanocolumns on Al Covered Si(111) Substrates by PA-MBE.

Self-assembled InN nanocolumns were grown at low temperatures by plasma-assisted molecular beam epitaxy with a high crystalline quality. The self-assembling procedure was carried out on AlN/Al layers on Si(111) substrates avoiding the masking process. The Al interlayer on the Si(111) substrate prevented the formation of amorphous SiN. We found that the growth mechanism at 400 ∘ C of InN nanocolumns started by a layer-layer (2D) nucleation, followed by the growth of 3D islands. This growth mechanism promoted the nanocolumn formation without strain. The nanocolumnar growth proceeded with cylindrical and conical shapes with heights between 250 and 380 nm. Detailed high-resolution transmission electron microscopy analysis showed that the InN nanocolumns have a hexagonal crystalline structure, free of dislocation and other defects. The analysis of the phonon modes also allowed us to identify the hexagonal structure of the nanocolumns. In addition, the photoluminescence spectrum showed an energy transition of 0.72 eV at 20 K for the InN nanocolumns, confirmed by photoreflectance spectroscopy.

Estado nutricio saludable en la mujer durante la gestación: teoría de rango medio / Healthy nutritional status of women during gestation: a medium range theory / Estado nutrício saudável na mulher durante a gestação: teoria de rango médio

Introducción La obesidad materna y una ganancia de peso gestacional superior a lo recomendado pueden colocar a las mujeres y a sus bebés en riesgo de malos resultados de salud, tanto a corto como a largo plazo. Para los profesionales de enfermería es un reto prevenir problemas nutricionales en las gestantes a nivel primario. Resulta indispensable contar con teorías de rango medio propias de enfermería que guíen el cuidado diario. Desarrollo Este artículo presenta el desarrollo de la Teoría de Rango Medio Estado nutricio saludable en la mujer durante la Gestación, desarrollada mediante el método de derivación teórica de Fawcett, sustentado en el Modelo de Promoción de la Salud de Pender y la revisión de la literatura sobre obesidad materna. Esta teoría de rango medio tiene como objetivo explicar como factores personales, cognitivos y conductuales influyen en la mujer para que adopten conductas necesarias que promuevan un estado nutricio saludable durante la gestación. Se ilustran los vínculos entre los conceptos de modelo, los conceptos de la teoría de rango medio y los indicadores empíricos. Conclusiones La teoría de rango medio propuesta puede ayudar a proporcionar atención basada en evidencia y a proponer intervenciones para mejorar el estado nutricio, en particular al personal de enfermería materno infantil debido que tiene un rol importante en el control y seguimiento prenatal

Introduction Maternal obesity and a higher than recommended gestational weight gain can place women and their babies at risk of developing adverse health outcomes both in the short, and in the long term. Because of this, nursing professionals are challenged to within primary level, prevent nutritional unbalances among pregnant women. Therefore, it is necessary to have nursing-own medium range theories which address this type of daily care. Development This article presents the development of a Healthy Nutritional Status Medium Range Theory for women during gestation based on the Fawcett theoretical derivation method, and sustained by Pender's Health Promotion Model and the corresponding maternal obesity literature review. This theory aims to explain how personal, cognitive, and behavioral factors can exert an influence on women so that they adopt conducts which promote a healthy nutritional status during their pregnancy. Links among model related concepts, medium range theory concepts, and empirical indicators are all illustrated. Conclusions The proposed medium range theory can help obstetric nursing staff in the provision of evidence-based attention and corresponding interventions to improve the nutritional status of pregnant women.

Introdução A obesidade materna e um ganho de peso gestacional superior ao aconselhado, podem colocar às mulheres e aos seus bebês em risco de resultados adversos de saúde, tanto a curto quanto a longo prazo. Para os profissionais de enfermagem é um desafio prevenir problemas nutricionais nas gestantes a nível primário. Resulta indispensável contar com teorias de rango médio próprias de enfermagem que orientem o cuidado diário. Desenvolvimento Este artigo apresenta o desenvolvimento da Teoria de Rango Médio Estado nutrício saudável na mulher durante a Gestação, desenvolvida mediante o método de derivação teórica de Fawcett, sustentado no Modelo de Promoção da Saúde de Pender e a revisão da literatura sobre obesidade materna. Esta teoria de rango médio tem como objetivo explicar como fatores pessoais, cognitivos e comportamentais influem na mulher para que adoptem condutas necessárias que promovam um estado nutrício saudável durante a gestação. Ilustram-se as ligações entre os conceitos de modelo, os conceitos da teoria de rango médio e os indicadores empíricos. Conclusões A teoria de rango médio proposta pode ajudar a proporcionar atenção baseada em evidencia e a propor intervenções para melhorar o estado nutrício, no particular ao pessoal de enfermagem materno infantil devido a que tem um papel importante no controle e seguimento pré-natal.

Sensitivity Tests of Pellets Made from Manganese Antimonate Nanoparticles in Carbon Monoxide and Propane Atmospheres.

Nanoparticles of manganese antimonate (MnSb2O6) were prepared using the microwave-assisted colloidal method for its potential application as a gas sensor. For the synthesis of the oxide, manganese nitrate, antimony chloride, ethylenediamine and ethyl alcohol (as a solvent) were used. The precursor material was calcined at 800 °C in air and analyzed by X-ray diffraction. The oxide crystallized into a hexagonal structure with spatial group P321 and cell parameters a = b = 8.8054 Å and c = 4.7229 Å. The microstructure of the material was analyzed by scanning electron microscopy (SEM), finding the growth of microrods with a size of around ~10.27 µm and some other particles with an average size of ~1.3 µm. Photoacoustic spectroscopy (PAS) studies showed that the optical energy band (Eg) of the oxide was of ~1.79 eV. Transmission electron microscopy (TEM) analyses indicated that the size of the nanoparticles was of ~29.5 nm on average. The surface area of the powders was estimated at 14.6 m²/g by the Brunauer⁻Emmett⁻Teller (BET) method. Pellets prepared from the nanoparticles were tested in carbon monoxide (CO) and propane (C3H8) atmospheres at different concentrations (0⁻500 ppm) and operating temperatures (100, 200 and 300 °C). The pellets were very sensitive to changes in gas concentration and temperature: the response of the material rose as the concentration and temperature increased. The results showed that the MnSb2O6 nanoparticles can be a good candidate to be used as a novel gas sensor.

Técnicas de necropsia y toma de muestras en animales de experimentación: Una revisión bibliográfica y actualización / Necropsy and sampling techniques in experimental animals: A bibliographic review and update

Se plantea como objetivo describir las técnicas de necropsia en animales de experimentación, una revisión bibliográfica y actualización. Se describieron las técnicas de necropsia en cobayos (Cavia porcellus), conejos (Oryctolaguscuniculus), ratones (Mus musculus), la rata (Rattusnorvegicus (variedad albina), incluyendo peces. La necropsia sistemática incluye una revisión de la historia clínica, y/o datos del experimento realizado. El siguiente paso corresponde al examen externo, donde se describen lesiones sobre el tejido tegumentario, sistema locomotor, mucosas, cavidades naturales y cambios post-mortem. Posteriormente se realiza el desollado, de manera simultánea la apertura de cavidades, con la evaluación de órganos, mediante un exhaustivo examen macroscópico. Este procedimiento continua con la extracción de órganos y toma de muestras. Por último se debe elaborar un informe de necropsia donde el patólogo veterinario emitirá las conclusiones o diagnósticos comentarios, recomendaciones y las apreciaciones enmarcados en la epicrisis del caso. El proceso de necropsia junto con la recolección y envío de muestras apropiadas para la realización de pruebas de laboratorio es trascendental en el proceso de emisión de un diagnóstico, de la práctica de la toma de muestra y envío al laboratorio depende el diagnostico morfológico y etiológico. En conclusión se describieron las técnicas de necropsia y toma de muestras en animales de experimentación con énfasis en cobayos (Cavia porcellus), conejos (Oryctolaguscuniculus), ratones (Mus musculus), la rata (Rattusnorvegicus, variedad albina), incluyendo peces, como una herramienta básica para el diagnostico de patologías en animales de experimentación así como se mencionaron las condiciones de envío de muestras a los distintos laborator

The aim of this study was to describe the necropsy techniques in experimental animals, a literature review and update. Necropsy techniques were described in guinea pigs (Cavia porcellus), rabbits (Oryctolagus cuniculus), mice (Mus musculus), rat (Rattus norvegicus (albino variety), including fish, systematic necropsy includes a review of clinical history, and/or data of the experiment performed. The next step corresponds to the external examination, where lesions are described on the integumentary tissue, locomotor system, mucous membranes, natural cavities and post-mortem changes, followed by flaying, simultaneously opening cavities, with the evaluation of organs, through an exhaustive macroscopic examination. This procedure continues with the extraction of organs and sampling. Finally, a necropsy report must be prepared where the veterinary pathologist will issue the conclusions or diagnoses comments, recommendations and assessments framed in the epicrisis of the case, the necropsy process together with the collection and shipment of appropriate samples for the performance of laboratory tests is crucial in the process of issuing a diagnosis, the practice of sampling and sending to the laboratory depends on the morphological and etiological diagnosis. In conclusion, necropsy and sampling techniques were described in experimental animals with emphasis on guinea pigs (Cavia porcellus), rabbits (Oryctolagus cuniculus), mice (Mus musculus), rat (Rattus norvegicus albino variety), including fish, as a basic tool for the diagnosis of pathologies in experimental animals, as well as the conditions for sending samples to different laboratories.

Phenotypic and Genetic Variations in Obligate Parthenogenetic Populations of Eriosoma lanigerum Hausmann (Hemiptera: Aphididae).

The study of phenotypic and genetic variation of obligate parthenogenetic organisms contributes to an understanding of evolution in the absence of genetic variation produced by sexual reproduction. Eriosoma lanigerum Hausmann undergoes obligate parthenogenesis in Mexico City, Mexico, due to the unavailability of the host plants required for sexual reproduction. We analysed the phenotypic and genetic variation of E. lanigerum in relation to the dry and wet season and plant phenology. Aphids were collected on two occasions per season on a secondary host plant, Pyracantha koidzumii, at five different sites in the southern area of Mexico City, Mexico. Thirteen morphological characteristics were measured from 147 to 276 individuals per site and per season. A multivariate analysis of variance was performed to test the effect of the season, site and their interaction on morphological traits. Morphological variation was summarised using a principal component analysis. Genetic variation was described using six enzymatic loci, four of which were polymorphic. Our study showed that the site and season has a significant effect on morphological trait variation. The largest aphids were recorded during cold temperatures with low relative humidity and when the plant was at the end of the fruiting period. The mean genetic diversity was low (mean H e = .161), and populations were genetically structured by season and site. Morphological and genetic variations appear to be associated with environmental factors that directly affect aphid development and/or indirectly by host plant phenology.

The traceability chain of 131I measurements for nuclear medicine in Cuba.

The national traceability chain for (131)I activity measurements performed in nuclear medicine in Cuba is described. At the highest (primary) level, liquid scintillation counting employing the CIEMAT/NIST method is used; at the secondary level, a secondary standard radionuclide calibrator is utilized that allows for a quick and simple transference of the measurement unit to the tertiary level of end-users' instruments. The equivalence of Cuban standards and the assessment of measurement uncertainties at the end-user level are determined through the results of measurement comparisons.

Effects of mass media action on the Axelrod model with social influence.

The use of dyadic interaction between agents, in combination with homophily (the principle that "likes attract") in the Axelrod model for the study of cultural dissemination, has two important problems: the prediction of monoculture in large societies and an extremely narrow window of noise levels in which diversity with local convergence is obtained. Recently, the inclusion of social influence has proven to overcome them [A. Flache and M. W. Macy, e-print arXiv:0808.2710]. Here, we extend the Axelrod model with social influence interaction for the study of mass media effects through the inclusion of a superagent which acts over the whole system and has non-null overlap with each agent of the society. The dependence with different parameters as the initial social diversity, size effects, mass media strength, and noise is outlined. Our results might be relevant in several socioeconomic contexts and for the study of the emergence of collective behavior in complex social systems.

Tricobezoar gástrico e intestinal en adolescente femenina de 15 años: a propósito de un caso clínico IVSS "Dr. Tulio Carnevali Salvatierra" Mérida-Venezuela / Gastric and intestinal trichobezoar female teenager about 15 years: a purpose of case clinical in IVSS Dr. Tulio Carnevali Salvatierra

Los tricobezoar son recolecciones de material ingerido (pelos, fibras) que se acumulasn en estómago e intestino. Se originan de la tricotilomanía más tricofagia, cuando el tricobezoar se acumula en duodeno recibe el nombre de Sídrome de Rapunzel, más frecuente en el sexo femenino. Adolescente de 15 años, quien presentó dolor abdominal de aparición insidiosa acompañada de naúseas y vómitos incontables que se irradian a hipocondrio y fosa iliaca izquierda, su evolución fue torpida presentando signos de irritación peritoneal. Se realiza laparatomía exploradora hallándose tumor de contenido de pelo a nivel del Ángulo de Treitz, y cámara gástrica. Siendo egresada y referida al servicio de psiquiatría infanto-juvenil.

Causas de hospitalización del adulto con diabetes mellitus tipo 2 / Causes of hospitalization in older adults diagnosed with type 2 diabetes mellitus

Introducción: El propósito del estudio fue determinar la prevalencia de causas de hospitalización del adulto con diabetes mellitus tipo 2. Metodología: El diseño fue de tipo epidemiológico, por encuesta de prevalencia. La muestra fue a través del censo de pacientes que ingresaron a un hospital de segundo nivel. Las mediciones fueron: la cédula de identificación del paciente dividida en tres apartados: datos sociodemográficos, datos clínicos y datos de hospitalización para estimar la prevalencia. Cuestionario de Identificación de Trastornos por uso de Alcohol (AUDIT) y el cuestionario del uso de Tabaco de Fagerstrom. Resultados: Corresponden a 40 adultos hospitalizados (50% hombres y 50% mujeres). Al estimar de prevalencia por causa de hospitalización, se posicionó el pie diabético con 45% como principal, seguido de la insuficiencia renal crónica con el 40%. El consumo de alcohol y tabaco no se relacionó con la causa de hospitalización. Conclusiones: Las complicaciones que llevan a la hospitalización son importantes de valorar por el personal de enfermería, debido a la complejidad que presentan éstas, lo cual amerita intervenciones de tipo preventivo que ayuden disminuir el problema.

Introduction: The purpose of the study was to determine the hospitalization prevalence causes of an adult with diabetes mellitus type 2. Methodology: The design was of an epidemiological type, by a survey of prevalence. The sample went through the census of patients that entered to a hospital of second level. The measurements were by: The decree of identiication of the patient divided into three sections: Social demographic data, clinical data and data of hospitalization to reckon the prevalence. The Identiication questionnaire were by the use of Alcohol (AUDIT) and the use of Tobacco of Fagerstrom. Results: They correspond to 40 hospitalized adults (50% men and 50% women). Upon reckoning of prevalence because of hospitalization, the diabetic foot with 45% was positioned like main, followed by the chronic kidney failure with a 40%. The consumption of alcohol and tobacco did not relate to the cause of hospitalization. Conclusions: The complications that carry to the hospitalization are important to signiicance for the nursing personnel, due to the complexity that represent these, which deserves a search of preventive measures to help to diminish the problem.

Structure and magnetic properties of the hybrid system copper(II) mu2-2,2'-bipyridine-3-carboxylate-N,N':O-mu2-phosphate-O,O'.

The title compound [Cu(PO4H2)(C11H7N2O2)]n presents antiferromagnetic behavior. It has a polymeric one-dimensional structure in which the elemental links are tetranuclear units and the doubly protonated phosphates and the bipyridinemonocarboxylates act in a bridging mode. The magnetic behavior is described using an alternating chain model, with J = -3.32 cm (-1), alpha = 0.7, and g = 2.05.

Robust gammadelta+ T cell expansion in infants immunized at birth with BCG vaccine.

Cell-mediated immune responses to BCG vaccine were evaluated in 7-month-old infants vaccinated with intradermal combined BCG and Hepatitis B or intradermal BCG and intramuscular Hepatitis B at birth. Peripheral blood mononuclear cell cultures from both groups showed CD4(+), CD8(+) and remarkable gammadelta(+) T cell BCG-specific proliferation, without significant differences. Also, IL-10, IL-12, IFN-gamma and TNF-alpha concentrations in culture supernatants, measured by ELISA, were similar. The results suggested that the combined BCG and Hepatitis B vaccine was as immunogenic as BCG separated from Hepatitis B vaccine.

Relación de los factores personales biológicos, socioculturales y apoyo social con la responsabilidad en salud a pacientes con Tuberculosis pulmonar / List of personal factors biological, cultural and social support with responsibility for health patients with pulmonary tuberculosis

Introducción: El propósito fue conocer la relación entre factores personales biológicos, socioculturales y el apoyo social con la conducta promotora de salud de responsabilidad en salud. Metodología: Diseño descriptivo-correlacional, muestreo no probabilístico, muestra de 80 sujetos que terminaron el tratamiento. Recolección de la información con una cédula y dos instrumentos de medición con Alpha de Cronbach aceptable. Resultados: Se observó correlación negativa y significativa entre la edad con el apoyo emocional (rs=-.426,p<.001), como con el apoyo tangible (rs=-.436,p<=.001). Se encontró correlación negativa y significativa del índice de masa corporal con el apoyo emocional (rs=-.27,p=.01), y el apoyo tangible (rs=-.22,p=.04). Se encontró correlación positiva y significativa de los años de escolaridad con el apoyo emocional (rs=.42,p=<.001), y el apoyo tangible (rs=.39,p=<.001). El modelo de regresión lineal múltiple de escolaridad, nivel socioeconómico y ocupación mostró efecto significativo sobre la responsabilidad en salud (Fc=2.83,p=.03) con una variación explicada del 13%. Conclusiones: Los factores personales biológicos y socioculturales tienen relación con las influencias interpersonales. Se encontró efecto significativo de los factores socioculturales con la responsabilidad en salud. No se encontró efecto significativo de los factores biológicos con el resultado conductual; y del apoyo social con la responsabilidad en salud.

Introduction: The purpose was to know the relationship among personal, biological and social-cultural factors and the social support with the promote behaviour of health responsibility. Methodology: Descriptive co-related design, non probabilistic sampler, 80 subjects finishing treatment, information collection with schedule and two measurement instruments with Cronbach's Alpha acceptable. Results: Co-relation negative observed and significant between the age with emotional support (rs=-.426,p<.001), as tangible support (rs=-.436,p<.001). Co-relation negative and significant observed with the corporal mass index with the emotional support (rs=-.27,p=.01) and tangible support (rs=-.22,p=.04). Found positive and significant co-relation of the scholarship with the emotional support (rs=.42,p=<.001), and tangible support (rs=.39,p=<.001). Multiple lineal regression of scholarship model, social-economiclevel and living showed significant effect over health responsibility (Fc=2.83,p=.03) with 13%explained variation. Conclusions: The personal, biological and social-cultural factors are related with the interpersonal influences. Significant effect found in social-cultural factors with health responsibility. Significant effect not found with biological factors with conduct result; and the social support with health responsibility.

Landfill leachate treatment using a rotating biological contactor and an upward-flow anaerobic sludge bed reactor.

This paper describes the feasibility of an aerobic system (rotating biological contactor, RBC) and a biological anaerobic system (upward-flow anaerobic sludge bed reactor) at small scale for the treatment of a landfill leachate. In the first phase of the aerobic system study, a cyclic-batch RBC system was used to select perforated acetate discs among three different acetate disc configurations. These discs were chosen on the basis of high COD removal (65%) and biological stability. In the second phase, the RBC system (using four stages) was operated continuously at different hydraulic retention times (HRT), at different rotational speeds, and with varying organic concentrations of the influent leachate (2500-9000mgL(-1)). Forty percent of the total surface area of each perforated disc was submerged in the leachate. A COD removal of about 52% was obtained at an HRT of 24h and a rotational speed of 6rpm. For the anaerobic system, the reactor was evaluated with a volumetric organic load of 3273g-COD m(-3) day(-1) at an HRT of 54, 44, 39, 24 and 17h. At these conditions, the system reached COD removal efficiencies of 62%, 61%, 59%, 44% and 24%, respectively.

Features of whey protein concentrate supplementation in children with rapidly progressive HIV infection.

HIV infection is associated with subnormal GSH levels. An increase in glutathione levels has been observed in HIV-infected adults under oral whey protein supplementation. We studied the features associated with a whey protein concentrate supplementation in children with rapidly progressive AIDS. A prospective double-blind clinical trial was carried out for 4 months with 18 vertically HIV-infected children (1.98-6.37 years), under antiretroviral therapy, who had received whey protein, maltodextrin (placebo) or none. Erythrocyte glutathione concentration, T lymphocyte counts (CD4+ and CD8+) and occurrence of associated co-infections were evaluated. Wilcoxon's and Fischer's Exact tests were used to assess differences between whey protein-supplemented and control (placebo and non-supplemented) groups. A significant median increase of 16.14 mg/dl (p = 0.018) in erythrocyte glutathione levels was observed in the whey protein-supplemented group; the TCD4/CD8 lymphocyte ratio showed a non significant increase and lower occurrence of associated co-infections was also observed. In conclusion, whey protein concentrate supplementation can stimulate glutathione synthesis and, possibly, decrease the occurrence of associated co-infections.