Bacterioplâncton de quatro lagos rasos subtropicais com distintas características tróficas

O papel exercido pelas bactérias é reconhecido como fundamental no metabolismo de qualquer sistema aquático, não só pela mineralização da matéria orgânica, como também pela transferência de matéria e energia para níveis tróficos superiores (“microbial loop”). Para a realização deste estudo foram escolhidos quatro lagos com diferentes estados tróficos no Campus Carreiros da Universidade Federal do Rio Grande – FURG - RS. O Lago Biguás e o da Base possuem características de ambientes eutrófico - hipereutrófico, enquanto que, o Lago Polegar é caracterizado como um ambiente oligo-mesotrófico e o Lago Negro é considerado um ambiente distrófico. Em um estudo anterior em nove lagos rasos nesta mesma região, incluindo os quatro analisados no presente trabalho, Souza (2007) sugeriu que as bactérias livres atuariam como mineralizadoras e o seu crescimento seria limitado pela disponibilidade de fosfato (controle “bottom-up”), enquanto que as bactérias aderidas participariam da decomposição dos agregados orgânicos. Também foi sugerido que as bactérias aderidas seriam controladas principalmente pela predação por flagelados e ciliados (controle “top-down”), provavelmente devido ao seu maior biovolume. Porém, estas informações foram obtidas a partir de relações estatísticas de dados coletados em uma única amostragem. Assim, neste estudo a comunidade bacteriana (abundância e biomassa) e outros parâmetros físicos, químicos e biológicos dos quatro lagos rasos sub-tropicais foram estudados em amostragens quinzenais no decorrer de um ano entre junho de 2008 e maio de 2009. Nossos resultados indicam que a disponibilidade de carbono orgânico dissolvido produzido pelo fitoplâncton parece ser um dos principais fatores controladores da dinâmica de bactérias nestes lagos. Entretanto, a predação no Lago Negro parece ter sido de maior magnitude no controle das bactérias neste ambiente, uma vez que não houve um incremento na abundância bacteriana deste lago proporcional ao incremento da clorofila a. A presença de um maior número de nano - e microflagelados neste lago dá suporte a esta hipótese. Para testar esta hipótese, foi realizado um experimento utilizando-se a Técnica da Diluição em conjunto com a técnica a de FISH (Hibridização in situ Fluorescente) para identificar as taxas de produção e consumo não só dos diferentes morfotipos, mas também dos diferentes grupos filogenéticos (Archaea, Eubacteria, Alfa- Beta- e Gama-Proteobacteria e Cytophaga-Flavobacter) de uma amostra de água do Lago Negro. Os resultados deste experimento indicaram que as bactérias estão, de fato, sendo consumidas por vi protozoários na mesma proporção que estão sendo produzidas. Além disso, no Lago Negro a predação parece estar vinculada ao tamanho/biovolume celular, sendo os morfotipos de tamanho reduzido mais resistentes a predação e, por isso, mais abundantes.

Formación administrativa y contable en la Fundación María Luisa de Moreno, Localidad de Kennedy, Bogotá

Bogotá (Colombia): Universidad de La Salle. Facultad de Ciencias Administrativas y Contables. Programa de Administración de Empresas

Del sacrificio al ocio en Jalisco, México

El turismo religioso, turismo en espacios religiosos o las peregrinaciones, han crecido considerablemente, más de 30 millones de personas se desplazan anualmente en México sólo por motivación religiosa y se estima una derrama económica de 680 millones de dólares. Este trabajo pretende establecer la motivación de la visita de santuarios en seis localidades del estado de Jalisco y analizar si se relaciona con la idea de sacrificio y fe del peregrino o con el ocio y placer del turista dedicado a la experiencia y vivencia del fenómeno religiosos, así como el grado de transición entre recinto religioso y atractivo turístico., desde una perspectiva del turismo cultural, lo que enfrenta la idea de un turismo alternativo. Se puede afirmar que en Jalisco, con relación al turismo religioso, predomina la condición de peregrino (sacrificio) en los visitantes y los espacios sacros y sus contenidos culturales aún cumplen la función de generar entornos propicios para la veneración, la contemplación y la adoración.

Formación en emprendimiento desde los conocimientos administrativos y contables para un grupo de familias del barrió Lisboa – suba de la Fundación María Luisa de Moreno

Bogotá (Colombia) : Universidad de La Salle. Facultad de Ciencias Administrativas y Contables. Programa de Contaduría Pública

Características limnológicas e estrutura trófica das comunidades de peixes de alguns lagos naturais e artificiais do Rio Grande do Norte

Artificial lakes must differ from natural lakes in important structural and functional aspects that need to be understood so that these ecosystems can be properly managed. The aim of this work was to test the hypothesis that the artificial lakes (impoundments) in the semi-arid region of the Rio Grande do Norte State are more eutrophic and turbid and have different trophic structure when compared to the natural coastal lakes that occur in the humid eastern coast of the State. To test this hypothesis, 10 natural lakes and 8 artificial lakes with about 100 ha were sampled between September and November 2005 for the determination of some limnological variables and the abundance of the main fish species, which were grouped in three trophic guilds: facultative piscivores, facultative planktivores and omnivores. The results show that the artificial lakes had significantly higher concentrations of total nitrogen, total phosphorus, chlorophyll a , total and volatile suspended solids than the natural lakes. Results also show that the values of pH, total alkalinity, electric conductivity, turbidity as well as the coefficient of vertical attenuation of light were significantly higher in the artificial lakes than in the natural lakes. In the artificial lakes, the abundance of facultative planktivores was significantly higher, while the abundance of facultative piscivores significantly lower than in the natural lakes. There was no significant difference in the abundance of omnivorous fish between the two types of lakes. These results suggest that the increase in turbidity together with the other changes in the water quality of the artificial lakes, modifies the trophic structure of the fish communities reducing the importance of piscivores and the length of the food chains

Iron deficiency anaemia among apparently healthy pre-school children in Lagos, Nigeria.

Background: Iron deficiency, and specifically iron deficiency anaemia, remains one of the most severe and important nutritional deficiencies in the world today. Objective: To estimate the prevalence and associated factors for iron deficiency anaemia among pre-school children in Lagos. Methodology: The study was conducted from December 2009 to February 2010 at the outpatient clinics of Lagos State University Teaching Hospital, Lagos. Serum iron, total iron binding capacity, transferrin saturation and serum ferritin were assayed in subjects. The primary outcome measured was iron deficiency anaemia established based on the following criteria: hemoglobin <11.0 g/dl1 plus 2 or more of the following: MCV <70fl, transferrin saturation <10% or serum ferritin <15ng/ dL. Statistical analysis included Pearson Chi square analysis and logistic regression analysis. Results: A total of 87 apparently healthy subjects were recruited. Only one subject had iron depletion and this child belonged to the ≤ 2 years age category. None of the recruited subjects had iron deficiency without anaemia. Nine of the study subjects (10.11%) had iron deficiency anaemia. The prevalence of iron deficiency anaemia was significantly higher among younger age group than in the older age group (19.1% Vs 2.1%, p = 0.022). The prevalence of iron deficiency anaemia was significantly higher among subjects with weight-for-age, and weight-for-height Z scores below two standard scores (83.3% and 75.0% respectively, p = <0.001 and 0.001 respectively). Conclusion: The overall prevalence of iron deficiency anaemia among study subjects was 10.11%. Iron deficiency anaemia was more common in children aged two years and below. Weight-for-age and weight-for-height Z scores below minus two standard scores were strongly associated with iron deficiency anaemia.

Alonso Mudarra, vihuelista en la casa del infantado y canónigo en la catedral de Sevilla

La presente tesis doctoral estudia la vida y obra del vihuelista Alonso Mudarra (c. 1509- Sevilla, 1 de abril de 1580). A pesar de que ya existe un trabajo previo a cargo de Emilio Pujol, creemos necesario revisitar esta música y a su creador a la luz de las investigaciones realizadas en los dos tercios de siglo transcurridos desde la publicación de dicha monografía. El estudio está dividido en tres partes y dos volúmenes. En primer lugar abordamos la biografía de Mudarra, enfocándola desde la perspectiva de las tres ciudades que constituyen su itinerario vital: Valladolid, Guadalajara y Sevilla. En la segunda parte se estudia su obra, los Tres libros de música en cifras para vihuela, tanto en lo referente a aspectos bibliográficos como de su contenido. La tercera parte es la edición crítica de la obra musical contenida en los Tres libros. Los posibles orígenes vallisoletanos de Alonso Mudarra nos han llevado a indagar en la familia Mudarra, miembros del patriciado urbano de Valladolid desde el siglo XIII. Las importantes ramificaciones de la familia en San Martín de Valdeiglesias y en Palencia también son objeto de nuestro estudio. Nuestro propósito ha sido ubicar al Mudarra vihuelista dentro de esta gran familia. Para ello hemos recurrido a diferentes archivos: el Archivo de la Real Chancillería de Valladolid, el Archivo General de Simancas y el Archivo de Protocolos de Valladolid, bien de forma directa o a través de la plataforma Portal de Archivos Españoles (PARES). En otros casos hemos utilizado fuentes indirectas. Hemos podido reconstruir las ramas principales del árbol genealógico para gran parte del siglo XVI y establecer una hipótesis sobre nuestro vihuelista y su familia más cercana, la cual conocemos a través del testamento de Alonso y por la notoriedad de alguno de sus miembros, como es el caso de su hermano Francisco, importante miembro de la curia vaticana...

Impact of Hypoxia on the Community Structure of Benthic Macroinvertebrates of Lagos Lagoon, Nigeria

Study of the Lagos lagoon was conducted for two years to investigate the impact of hypoxia on the benthic macroinvertebrates. Water and benthic samples were collected monthly along the study stretch and analysed in a standard laboratory. Temporal variation in water physico-chemistry was largely controlled by rainfall pattern while the spatial variation was influenced by proximity to the Harbour as well as the pollution sources and types. A total of 3,159 individuals comprising three phyla, five classes, nineteen families and twenty three species were recorded. Iddo I, Iddo II, Ogudu and Agboyi study stations recorded very low individuals, but relatively high number of polychaetes. Benthic macro- invertebrate community was dominated by the molluscs. Margalef’s index of species richness ranged from 0.79 to 2.57 while Shannon-Wiener index ranged from 0.40 to 2.19. Species evenness index ranged from 0.29 to 0.80. There was generally low biodiversity indicating the stressed nature of the study area.

Ambient Air Quality Monitoring in Metropolitan City of Lagos, Nigeria

Twenty one sampling locations were assessed for carbon monoxide (CO), carbondioxide (CO2), oxygen (O2), sulphur dioxide (SO2), nitrogen dioxide (NO2), nitrogen oxide (NO), suspended particulate matter (SPM) and noise level using air pollutants measurement methods approved by ASTM for each specific parameter. All equipments and meters were all properly pre-calibrated before each usage for quality assurance. Findings of the study showed that measured levels of noise (61.4 - 101.4 dBA), NO (0.0 - 3.0 ppm), NO2 (0.0 - 3.0 ppm), CO (1.0 – 42.0 ppm) and SPM (0.14 – 4.82 ppm) in all sampling areas were quite high and above regulatory limits however there was no significant difference except in SPM (at all the sampling points), and noise, NO2 and NO (only in major traffic intersection). Air quality index (AQI) indicates that the ambient air can be described as poor for SPM, varied from good to very poor for CO, while NO and NO2 are very good except at major traffic intersection where they were both poor and very poor (D-E). The results suggest that strict and appropriate vehicle emission management, industrial air pollution control coupled with close burning management of wastes should be considered in the study area to reduce the risks associated with these pollutants.

Miguel Calderón de la Barca (1653-1720): biografía y aspectos artísticos

En el presente trabajo se da a conocer a Miguel Calderón de la Barca, figura de relieve por su carrera jurídica, pero sobre todo por las donaciones y legado artístico que enriquecieron el patrimonio cultural de la villa de Conil de la Frontera y el tesoro de la Iglesia Catedral de Cádiz. Los estudios que se habían efectuado hasta el momento eran parciales e incompletos, algo que se ha pretendido subsanar con la aportación de datos inéditos mediante los que recomponer la biografía del personaje, al tiempo que se ha procurado la comprensión y análisis profundo del momento histórico y manifestaciones artísticas ligadas a Calderón. Ha sido preciso recurrir a fuentes de diversa índole para poder cumplir estos objetivos. En la fase heurística de la investigación, realizamos la consulta y recopilación de la documentación manuscrita que se halla dispersa en archivos andaluces y madrileños. En concreto, el Archivo General de Indias es el principal repositorio para lo tocante al nombramiento de Calderón como oidor de la Real Audiencia de Nueva España en 1689 y el desempeño de sus funciones como ministro; el Archivo Histórico Nacional lo es, a su vez, para complementar la información tocante a la provisión de la plaza de toga en el Real y Supremo Consejo de las Indias en 1707. Por último, los archivos históricos de protocolos de Madrid, Cádiz y Conil, y los eclesiásticos –parroquiales, diocesano y catedralicio– de la capital y localidad de la expresada provincia gaditana, han suministrado las noticias útiles de la historia personal y familiar de don Miguel: bautismo, matrimonios, poderes para testar y testamento. No sólo eso. En su acervo hemos descubierto algo más: inventarios de bienes dotales y de la testamentaría –estos con la consiguiente tasación y almoneda–, escrituras de fundación de capellanías y donación de piezas de plata y pintura de señalada importancia a las fábricas de los templos de Conil y de la catedral de Cádiz...

Risk perception and correlates of alcohol use among out-of-school youth in motor parks in Lagos State, Nigeria

Background and Aim: The prevalence of alcohol use has increased globally. Out-of-school youth are a vulnerable group who might have missed opportunities for learning healthy behaviours in a formal school environment. The purpose of this study was to determine the risk perception, pattern of use, and correlates of alcohol use among out-of-school youth in Lagos, Nigeria. Methods: A cross-sectional study was conducted among 380 out-of-school youth in motor parks in Lagos State, Nigeria, using interviewer administered questionnaires. Results: The lifetime prevalence of alcohol use was 61.1%, while 55.5% were current drinkers. Beer (57.3%) was the most consumed type of alcohol, followed by distilled spirits (29.8%). Using the CAGE scoring system, more than half (57.8%) of the current drinkers had a drinking problem. Almost three quarters (70.1%) had experienced at least one episode of alcohol intoxication within the past month. A considerable number of current drinkers (63.5%) desired to reduce their alcohol intake or stop drinking, while 45.5% had made unsuccessful attempts to do so within the past year. Only 28.9% had received assistance to quit or reduce their drinking and of these less than half (39.3%) received assistance from a professional or healthcare worker. Males were more likely to be current drinkers and to have experienced episodes of alcohol intoxication. Parental and peer drinking were associated with alcohol use but not with intoxication. Conclusions: It is important to design specific programmes to reduce alcohol use among out-of-school youth in these settings.

Convenio General de Colaboración Académica entre la Universidad de Cuenca y el Colegio de Jalisco A.C.

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Un enamorado de la criminología: Lic. Marco Antonio Leija Moreno, uno de los fundadores del colegio de criminología

Profesionalmente se ha desempaño en dos grandes actividades: como docente y funcionario público, principalmente en el Poder Judicial donde luego de entrar como escribiente alcanzó el nivel más alto al ocupa la presidencia del Tribunal Superior de Justicia del Estado. Considerado uno de los mejores penalistas en el país, el profesor emérito supo sacar adelante la Licenciatura en Criminología.