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Sample records for centro-meridional lago salitroso-paso

  1. Neotectónica del sector centro-meridional de la cuenca de Madrid

    Directory of Open Access Journals (Sweden)

    Zazo, C.

    1988-12-01

    rectilíneos, facetas triangulares, depósitos basculados y deformados; así como la aplicación de índices geomorfológicos indicadores de Neotectónica como son: Indice del gradiente del thalweg, índice de sinuosidad del frente montañoso y la relación anchura/altura del valle. Por otra parte se ha realizado un análisis del perfil longitudinal de los diferentes ríos que atraviesan el área, así como del grado de sinuosidad de los mismos. De todo ello se deduce que durante el Cuaternario la actividad neotectónica es importante en el Sector Centro-Meridional de la cuenca de Madrid, y fundamentalmente en el tránsito Pleistoceno inferior/medio, etapa durante la cual se produce la captura del Manzanares por un tributario del Jarama, debido al basculamiento hacia el SW que sufre el bloque de La Marañosa. La mayoría de los rasgos geomorfológicos indicadores de neotectónica se encuentran asociados a los grandes escarpes yesíferos que bordean los ríos fundamentales, dichos rasgos se manifiestan a lo largo de todo el Cuaternario incluido el Holoceno. Por otra parte, del estudio de los perfiles longitudinales de los ríos se deduce un gran alejamiento de éstos con relación al perfil teórico de equilibrio, estando todos ellos afectados por numerosas inflexiones que en muchos casos se corresponden con el paso de accidentes perpendiculares al cauce. Asimismo el grado de sinuosidad de los cursos revela su condicionamiento, a pequeña escala, del paso de accidentes o líneas de actividad tectónica.

  2. La divergencia genética entre poblaciones del Área Andina Centro Meridional evaluada mediante rasgos no métricos del cráneo

    Directory of Open Access Journals (Sweden)

    Cocilovo, José Alberto

    2009-01-01

    Full Text Available Durante más de 10.000 años el Area Andina Centro Meridional proporcionó un escenario ideal para el desarrollo de distintas poblaciones y entidades culturales, interactuando a través de una amplia red de intercambio y distribución de productos. A pesar de este nivel de interacción, la información métrica disponible (Bolivia, Norte de Chile y Noroeste Argentino, reveló un fuerte proceso de divergencia genética (FST = 0.195 entre subregiones (Varela et al., 2008. Esta evidencia es contrastada en el presente trabajo a partir del análisis de una muestra integrada por 1416 individuos de ambos sexos, cubriendo un intervalo de 4.500 años. Se emplearon 12 atributos (rasgos no métricos del cráneo registrados como presencia-ausencia. Las diferencias entre subáreas fueron evaluadas mediante la estadística MMDS y D2 de Mahalanobis calculada a partir de componentes principales. Ambas matrices de distancias fenotípicas presentaron una alta correlación, destacando una significativa diferenciación a nivel regional. La mayor distancia se registra entre el Noroeste Argentino y el Norte de Chile, ocupando Bolivia una posición equidistante entre ambas regiones. Dentro de cada región las muestras están más relacionadas entre si ((Cochabamba, (Puna, Quebrada, Valliserrana y Pampa Grande, (Arica, Pisagua, Norte Semiárido. Hay mayor vinculación entre Cochabamba y el Noroeste Argentino y mayor divergencia entre los grupos de Chile. Se confi rma un modelo de poblamiento a partir de la subdivisión de una población ancestral en dos ramas que ocuparon: una el Norte de Chile y otra el Noroeste Argentino. En cada una de ellas el proceso dispersivo originó varias líneas que se diferenciaron gradualmente hacia el sur, durante la exploración de nuevos ambientes cuya conquista y colonización garantizó la subsistencia de la población.

  3. Lagos Notes and Records

    African Journals Online (AJOL)

    PROMOTING ACCESS TO AFRICAN RESEARCH ... Lagos Notes and Records is an annual, interdisciplinary journal of the humanities. ... Insuring the Nation: Europeans and the Emergence of Modern Insurance Business in Colonial Nigeria ...

  4. Lagos Notes and Records: Editorial Policies

    African Journals Online (AJOL)

    Professor Tom Byers, University of Louisville Professor Olumuyiwa Alaba, University of Lagos Professor Karen King-Aribisala, University of Lagos Professor Samuel Ade Ojo, University of Lagos Professor Niyi Osundare, University of Lagos Professor Segun Awonusi, University of Lagos Professor Adebayo Lawal, University ...

  5. Lagos Historical Review

    African Journals Online (AJOL)

    The Lagos Historical Review is an international and interdisciplinary journal publishing papers with a historical focus. The journal generates and participates in debates to advance the discipline of history and promote its relevance to development. The journal aims to serve the academic community with a bias towards ...

  6. El Lago de Tota

    Directory of Open Access Journals (Sweden)

    Borrero H. José I.

    1963-06-01

    Full Text Available Puesto que el lago de Tola constituye hoy en día la única fuente de abastecimiento de agua para nuestra máxima industria nacional, como es Acerías de Paz del Río, porque esta industria depende en un ciento por ciento del lago de Tota para su desarrollo actual y ensanches futuros, según concepto de sus directivas además por ser este un lugar de incomparable belleza al cual debe dársele la importancia que merece, se ha resuelto escribir estas líneas, en las cuales el lector encontrará esbozados en la forma más sucinta posible una serie de hechos que a no dudar todos hemos observado al visitar el lago. No se pretende que este pequeño escrito abarque todo el problema que es de por sí muy vasto y que posiblemente ha sido tratado ya antes con mayor propiedad, pero sí se espera que produzca en cada uno de los lectores una reacción que sea lo suficientemente grande para que logre convertirlos en admiradores de Tota por consiguiente en sus perennes defensores. No tratamos tampoco de inculpar a nadie y menos a ninguna de las entidades nacionales responsables de la conservación de nuestros recursos naturales, sino simplemente de alertar a todos los directivos de esas entidades para que de común acuerdo logremos salvar el Lago de Tota.

  7. The Seis Lagos Carbonatite Complex

    International Nuclear Information System (INIS)

    Issler, R.S.; Silva, G.G. da.

    1980-01-01

    The Seis Lagos Carbonatite Complex located about 840 Km from Manaus, on the northwestern part of the Estado do Amazonas, Brazil is described. Geological reconnaissance mapping by Radam Project/DNPM, of the southwestern portion of the Guianes Craton, determined three circular features arranged in a north-south trend and outcroping as thick lateritic radioactive hills surrounded by gneisses and mignatites of the peneplained Guianense Complex. Results of core drilling samples analysis of the Seis Lagos Carbonatite Complex are compared with some igneous rocks and limestones of the world on the basis of abundance of their minor and trace elements. Log-log variation diagram of strontium and barium in carbonatite and limestone, exemplifield by South Africa and Angola carbonatites, are compared with the Seis Lagos Carbonatite Complex. The Seis Lagos Carbonatite Complex belongs to the siderite-soevite type. (E.G.) [pt

  8. Lagos Koolhaas and Partisan Politics in Nigeria

    OpenAIRE

    Fourchard, Laurent

    2010-01-01

    International audience; Architect Rem Koolhaas and his team from Harvard regard Lagos as an extreme and pathological form of the city in Africa and as a paradigmatic case of a modern avant-garde city. In rehabilitating the informality at work in Lagos, they put forward a romanticized vision of a self-regulatory system working outside state regulation and political influence. In this article I consider that the crisis of urban infrastructure in Lagos is less the result of the weakness of the N...

  9. Biomedical Science Technologists in Lagos Universities: Meeting ...

    African Journals Online (AJOL)

    Biomedical Science Technologists in Lagos Universities: Meeting Modern Standards ... like to see in biomedical science in Nigeria; 5) their knowledge of ten state-of-the-arts ... KEY WORDS: biomedical science, state-of-the-arts, technical staff ...

  10. Lagos Journal of Library and Information Science: Site Map

    African Journals Online (AJOL)

    Lagos Journal of Library and Information Science: Site Map. Journal Home > About the Journal > Lagos Journal of Library and Information Science: Site Map. Log in or Register to get access to full text downloads.

  11. Lagos Journal of Library and Information Science: Journal ...

    African Journals Online (AJOL)

    Lagos Journal of Library and Information Science: Journal Sponsorship. Journal Home > About the Journal > Lagos Journal of Library and Information Science: Journal Sponsorship. Log in or Register to get access to full text downloads.

  12. LAGO: The Latin American giant observatory

    Science.gov (United States)

    Sidelnik, Iván; Asorey, Hernán; LAGO Collaboration

    2017-12-01

    The Latin American Giant Observatory (LAGO) is an extended cosmic ray observatory composed of a network of water-Cherenkov detectors (WCD) spanning over different sites located at significantly different altitudes (from sea level up to more than 5000 m a.s.l.) and latitudes across Latin America, covering a wide range of geomagnetic rigidity cut-offs and atmospheric absorption/reaction levels. The LAGO WCD is simple and robust, and incorporates several integrated devices to allow time synchronization, autonomous operation, on board data analysis, as well as remote control and automated data transfer. This detection network is designed to make detailed measurements of the temporal evolution of the radiation flux coming from outer space at ground level. LAGO is mainly oriented to perform basic research in three areas: high energy phenomena, space weather and atmospheric radiation at ground level. It is an observatory designed, built and operated by the LAGO Collaboration, a non-centralized collaborative union of more than 30 institutions from ten countries. In this paper we describe the scientific and academic goals of the LAGO project - illustrating its present status with some recent results - and outline its future perspectives.

  13. Urban-Rural Temperature Differences in Lagos

    Directory of Open Access Journals (Sweden)

    Vincent N. Ojeh

    2016-05-01

    Full Text Available In this study, the hourly air temperature differences between City hall (urban and Okoafo (rural in Lagos, Nigeria, were calculated using one year of meteorological observations, from June 2014 to May 2015. The two sites considered for this work were carefully selected to represent their climate zones. The city core, City hall, is within the Local Climate Zone (LCZ 2 (Compact midrise while the rural location, Okoafo, falls within LCZ B (Scattered Trees in the south-western part on the outskirt of the city. This study is one of very few to investigate urban temperature conditions in Lagos, the largest city in Africa and one of the most rapidly urbanizing megacities in the world; findings show that maximum nocturnal UHI magnitudes in Lagos can exceed 7 °C during the dry season, and during the rainy season, wet soils in the rural environment supersede regional wind speed as the dominant control over UHI magnitude.

  14. Lagos Journal of Library and Information Science

    African Journals Online (AJOL)

    Lagos Journal of Library and Information Science (LJLIS) aims to publish articles, short communications and conference reports which will: raise the level of awareness within the international library and information community of the potential for change and innovation; assist policy and decision-making in the medium term ...

  15. Automated acquisition: principles and practice | Ezomo | Lagos ...

    African Journals Online (AJOL)

    No Abstract. Lagos Journal of Library and Information Science Vol. 1(2) 2003: 120-124. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Article Metrics. Metrics Loading ... Metrics powered by PLOS ALM · http://dx.doi.org/10.4314/ljlis.v1i2.35486 · AJOL African Journals ...

  16. Factors Influencing Patronage Of Medical Tourism In Metropolitan Lagos Nigeria

    OpenAIRE

    Omisore; E.O.; Agbabiaka; H. I.

    2015-01-01

    Since medical tourism attract patient from various origin to seek medical services at different destinations it is paramount to consider the factors that motivate patrons decision on medical tourism. Hence this study assesses the factors influencing patronage of medical tourism in Lagos metropolis Nigeria. Lagos State is situated in the southwestern corner of Nigeria it lies within Latitudes 62N to 64N of the Equator and Longitudes 245E to 420E of the Greenwich meridian. Metropolitan Lagos is...

  17. Major Sources of Worries and Concerns about Landfills in Lagos

    African Journals Online (AJOL)

    Choice-Academy

    Department of Physical Development, Nigerian Institute of Social and Economic Research (NISER), Ibadan, Nigeria. ... Keywords: Landfills; Environment; Risk; Perception; Lagos. Introduction ... the popular media frequently contain accounts.

  18. Bioremediación de lagos tropicales eutrofizados: estudio del Lago San Pablo (Ecuador)

    OpenAIRE

    Gómez Rosero, Tamia Gabriela

    2017-01-01

    En este trabajo se presenta la propuesta del Plan de Restauración Ambiental denominado "Guardianas/es del Lago" que, a través de la fitorremediación de las macrófitas y diseñado con la participación de la población, plantea disminuir la contaminación que actualmente existe en el lago San Pablo. Para que el diseño sea acorde a la realidad, se ha realizado un diagnóstico de las condiciones físico-químicas, identificación del plancton y de las macrófitas del lago, además una indagaci...

  19. Breastfeeding practices of mothers of young children in Lagos, Nigeria

    African Journals Online (AJOL)

    Objective: To determine the breastfeeding practices (prevalence, initiation and exclusivity) of mothers of young children in Lagos. Methods: This was a communitybased, cross-sectional study carried out in 2010 in two Local Government Areas of Lagos State. Structured, intervieweradministered questionnaires were ...

  20. Lago Agrio (Nueva Loja), Ecuador: A Strategic Black Spot?

    Science.gov (United States)

    2013-03-01

    Lago Agrio (Nueva Loja ), Ecuador : A Strategic Black Spot? by Colonel John A. Conway United States Army...REPORT TYPE STRATEGY RESEARCH PROJECT .33 3. DATES COVERED (From - To) 4. TITLE AND SUBTITLE Lago Agrio (Nueva Loja ), Ecuador : A...Agrio (Nueva Loja ), Ecuador : A Strategic Black Spot? by Colonel John A. Conway United States Army Colonel Juan C

  1. Widening the tax net: Lessons from Lagos State, Nigeria | Abiola ...

    African Journals Online (AJOL)

    Pressure is on governments all over the world to increase revenue through taxation in order to provide better services within their jurisdictions. This study attempts to access the Lagos state's revenue performance under the internally generated revenue scheme. Lagos state total revenue data was collected from 2009 to ...

  2. Road Traffic Accident Variations in Lagos State, Nigeria: A Synopsis ...

    African Journals Online (AJOL)

    FIRST LADY

    The major objective of this research is to examine the variation patterns of road traffic .... situation in Lagos state is bad because of the absence of effective transport ... environment as judged by the investigating officers. Also .... pattern of road traffic accident occurrence over that part of Lagos State. For ... Ph.D Thesis.

  3. 459 Road Transport System Management and Traffic in Lagos ...

    African Journals Online (AJOL)

    User

    2010-10-16

    Oct 16, 2010 ... reason for this being the catalytic effect of transport development on socio- economic ... as well as in promoting regional cooperation. In Lagos State ... The primary road network (Federal and State roads) which link the major .... Recently, in 2002, when a survey of Lagos urban traffic was conducted, the.

  4. Factors Affecting Tourist Satisfaction in Lagos State,Nigeria | Madu ...

    African Journals Online (AJOL)

    This paper tries to discover factors that are responsible for the poor development of recreational tourism in Lagos State of Nigeria, so as to be able to suggest improvement measures. The results show that the overall satisfaction of the business tourists is generally similar to that of the recreational group, and that Lagos State ...

  5. Circulating Adipokine levels in Type 2 Diabetes Mellitus in Lagos ...

    African Journals Online (AJOL)

    Objective: This study was undertaken with the aim of investigating adipokine levels in the Type 2 Diabetes Mellitus. Methods: This is a cross sectional study conducted in Lagos University Teaching Hospital (LUTH), a-700 bed tertiary hospital centre in Lagos, Nigeria. 53 diabetic subjects and 27 non-diabetic controls with ...

  6. Autopsy findings in sickle cell disease patients in Lagos State ...

    African Journals Online (AJOL)

    Autopsy findings in sickle cell disease patients in Lagos State University Teaching Hospital, Ikeja, Lagos, Nigeria. ... The study showed that the most common cause of sudden death was anemia-related (50%) while 21% were due to acute infections, 18.4 % were due to cardiovascular events and 4.6% were due to ...

  7. Inventory of fisheries and fishes of the Lagos Lagoon, Lagos, Nigeria

    African Journals Online (AJOL)

    The systematic literature of fishes and fisheries in Lagos Lagoon is scattered, hence there is need for a comprehensive documentation of the diverse fish species that ... artisanal fishery, points to environmental degradation and possible changes in water quality with biological consequences for the biota in this environment.

  8. Emergency distress call system for automobiles in Lagos state, Nigeria

    African Journals Online (AJOL)

    Emergency distress call system for automobiles in Lagos state, Nigeria. ... PROMOTING ACCESS TO AFRICAN RESEARCH ... and communications technology capabilities to transportation and the medical care system in order to save lives, ...

  9. Personnel Recruitment and Retention Strategies in Lagos State Civil ...

    African Journals Online (AJOL)

    Personnel Recruitment and Retention Strategies in Lagos State Civil Service of Nigeria. ... The results show that the strategy for personnel recruitment into the CS is based on mixtures of merit and political ... AJOL African Journals Online.

  10. Understanding green and sustainable construction in Lagos, Nigeria ...

    African Journals Online (AJOL)

    Ethiopian Journal of Environmental Studies and Management. Journal Home ... Journal Home > Vol 8, No 1 (2015) >. Log in or ... Understanding green and sustainable construction in Lagos, Nigeria: Principles, attributes and framework.

  11. Major Sources of Worries and Concerns about Landfills in Lagos

    African Journals Online (AJOL)

    Choice-Academy

    Keywords: Landfills; Environment; Risk; Perception; Lagos. Introduction ... largely to the perception of risk to human health and the environment. ..... in turn pass the cost to consumers. Potential ... Environment and Behaviour, Vol. 32 No. 2 pp.

  12. Level of awareness of genetic counselling in Lagos, Nigeria: its ...

    African Journals Online (AJOL)

    Level of awareness of genetic counselling in Lagos, Nigeria: its advocacy on the inheritance of sickle cell disease. ... and the level of awareness about genetic counseling in 30 hospitals were carried out. ... AJOL African Journals Online.

  13. Pattern of Exodontia treatment need of adults attending the Lagos ...

    African Journals Online (AJOL)

    Aim and Objective: To determine the pattern of tooth loss among adults ... Dentistry of the Lagos University Teaching Hospital from September 2001 to April 2004. ... treatment recommended (i.e. periodontal, conservative dentistry, prosthetic, ...

  14. Ecological assessment of a coastal shallow lagoon in Lagos, Nigeria

    African Journals Online (AJOL)

    Michael Horsfall

    Nigerian Institute for Oceanography and Marine Research, P.M.B. 12729, Victoria Island, Lagos, Nigeria ... diversity observed in station B could be attributed to stress imposed by effluents from ..... of American Science 2010;6(1):42-48.

  15. Social change and traditional gender roles in Lagos State, Nigeria ...

    African Journals Online (AJOL)

    Social change and traditional gender roles in Lagos State, Nigeria. ... twenty seven respondents consisted of 135 Females (59.5%) and 92 Males (40.5%) participated in the survey. The study adopted descriptive method of research design.

  16. adaptation of plastic waste to energy development in lagos

    African Journals Online (AJOL)

    user

    Keywords: Plastic wastes, Energy, Sustainable development, Environment, ... countries to be rationalising energy supply to their people. .... Managing waste in Lagos is may be a herculean task in ..... uncertainties in a life cycle perspective.

  17. Trend of Heavy Metal Concentrations in Lagos Lagoon Ecosystem

    African Journals Online (AJOL)

    komla

    The distribution and occurrence of heavy metals in the sediment, water and benthic animals of the Lagos lagoon ... The concentrations of the metals detected in the lagoon sediment and water ..... waste products contaminating water sources.

  18. Asymptomatic bacteriuria among antenatal women in Lagos.

    Science.gov (United States)

    Olamijulo, Joseph Ayodeji; Adewale, Chris Olu; Olaleye, Olalekan

    2016-08-01

    This cross-sectional study was undertaken to determine the prevalence of asymptomatic bacteriuria (ASB), the commonest bacterial isolates and the antibiotic sensitivity pattern among 556 pregnant women in Lagos University Teaching Hospital (LUTH), Nigeria. Women with a bacterial count over 100,000 colony-forming units per millilitre of the same organisms in paired urine samples were considered to have ASB. The prevalence of ASB was 14.6%. Klebsiella was the commonest micro-organism (39.2%) isolated. ASB was significantly associated with marital status, body mass index and parity. There was a significant relationship between urinary nitrites and ASB. The isolated organisms showed remarkable resistance to commonly prescribed antibiotics such as amoxicillin, cloxacillin and trimethoprim but good sensitivity to ofloxacin, gentamycin and ceftazidime. These facts have implications for the management of ASB in pregnancy.

  19. TEMPOROMANDIBULAR PAIN DYSFUNCTION SYNDROME IN PATIENTS ATTENDING LAGOS UNIVERSITY TEACHING HOSPITAL, LAGOS, NIGERIA.

    Science.gov (United States)

    Eweka, O M; Ogundana, O M; Agbelusi, G A

    2016-01-01

    Temporomandibular joint pain dysfunction syndrome (TMJPDS) is the most common temporomandibular disorder. This condition presents with symptoms of pain, restricted jaw movement and joint noise. Other symptoms include otalgia, headache, neck pain and trismus. To determine the pattern of Temporomandibular joint pain dysfunction syndrome patients managed at the Lagos University Teaching Hospital, Lagos, Nigeria. A descriptive study of patients with signs and symptoms of Temporomandibular joint pain dysfunction syndrome attending the Oral Medicine Clinic of Lagos University Teaching Hospital. Twenty-one patients with Temporomandibular joint pain dysfunction syndrome were enrolled into the study, out of which 10(48%) were females and 11(52%) were males. The age range was 23-81years with a mean of 45.2 ± 18.9 years. Majority of the patients 20(95.2%) complained of pain around the joint, in the pre-auricular region, in the muscles of mastication and the ear. While 7(35%) complained of clicking sounds, 10(47.6%) complained of pain on mouth opening and during mastication only. In all 5(23.8%) had impaired movement of the jaws, mouth opening was normal in 18(85.7%) but reduced in 3(14.3%) patients. Over half of patients 12(57%) experienced clicking sounds, there was tenderness around the temporomandibular joint in 16(76.2%) cases, pain in the ear of 7(33.3%) patients and 13(61.9%) people presented with tenderness of the muscles of mastication. Conservative management of all the cases resulted in resolution of the symptoms. Temporomandibular joint pain dysfunction syndrome has diverse clinical presentation and though distressing, it responds to prompt and effective conservative management.

  20. Assessment of radiation protection practices among radiographers in Lagos, Nigeria.

    Science.gov (United States)

    Eze, Cletus Uche; Abonyi, Livinus Chibuzo; Njoku, Jerome; Irurhe, Nicholas Kayode; Olowu, Oluwabola

    2013-11-01

    Use of ionising radiation in diagnostic radiography could lead to hazards such as somatic and genetic damages. Compliance to safe work and radiation protection practices could mitigate such risks. The aim of the study was to assess the knowledge and radiation protection practices among radiographers in Lagos, Nigeria. The study was a prospective cross sectional survey. Convenience sampling technique was used to select four x-ray diagnostic centres in four tertiary hospitals in Lagos metropolis. Data were analysed with Epi- info software, version 3.5.1. Average score on assessment of knowledge was 73%. Most modern radiation protection instruments were lacking in all the centres studied. Application of shielding devices such as gonad shield for protection was neglected mostly in government hospitals. Most x-ray machines were quite old and evidence of quality assurance tests performed on such machines were lacking. Radiographers within Lagos metropolis showed an excellent knowledge of radiation protection within the study period. Adherence to radiation protection practices among radiographers in Lagos metropolis during the period studied was, however, poor. Radiographers in Lagos, Nigeria should embrace current trends in radiation protection and make more concerted efforts to apply their knowledge in protecting themselves and patients from harmful effects of ionising radiation.

  1. Evaluación de la contaminación en el lago Titicaca

    OpenAIRE

    Ministerio de Agricultura; Instituto Nacional de Recursos Naturales. Dirección General de Áreas Naturales Protegidas

    1996-01-01

    Contiene una relación de informes relacionados a la contaminación del lago Titicaca, tales como: Evaluación de la contaminación en el lago Titicaca y Evaluación ambiental del problema de contaminación que afecta al lago Titicaca (ambos de de setiembre de 1996), Informe sobre la grave contaminación ambiental que está afectando el lago Titicaca (marzo de 1996) y el Plan para descontaminar las aguas del lago Titicaca, Bahía Interior de Puno (julio de 1996).

  2. Music education and musical activities in Lagos: then and now ...

    African Journals Online (AJOL)

    This article is a historical excursion into the musical activities in Lagos from around 600 to 1800, which it classifies as the first phase, from around 1800 to 1914, the second period, and third period, from around 1914 up to date and how they have affected music education in the area. The study also highlights the roles played ...

  3. Quality of gari (roasted cassava mash) in Lagos State, Nigeria ...

    African Journals Online (AJOL)

    Gari is creamy-white, partially gelatinized roasted free flowing granular flour made from cassava roots. It is a major staple consumed in both urban and rural areas due to its convenience. Quality of Gari (roasted cassava mash) in Lagos, Nigeria was investigated. Gari samples were collected at random from different ...

  4. An institutional survey of female genital mutilation in Lagos, South ...

    African Journals Online (AJOL)

    Background: Female genital mutilation (FGM) as a procedure can have serious physical and psychological health consequences in girls and women. Objectives: To determine the prevalence of FGM and the socio-demographic factors which influence the practice among women in Lagos State. Methods: This was a ...

  5. The Prevalence of Cardiovascular Disease in the Lagos State, Nigeria

    African Journals Online (AJOL)

    The analysis, which examines the prevalence of cardiovascular diseases (ICD 9: 390-459) in Lagos State of Nigeria, was based on records obtained from the register of deaths in four Local Government Areas of the State. The result shows that there is general increase in death rates due to cardiovascular diseases over the ...

  6. Gender and Campus Violence: A Study of University of Lagos ...

    African Journals Online (AJOL)

    This research is an attempt to investigate the incidence of violence among university students using University of Lagos as a case study. A questionnaire on different kinds of violence was administered to 446 students of the university. In addition, four focus group discussion sessions were conducted to assess the types of ...

  7. subsurface sequence delineation and saline water mapping of lagos

    African Journals Online (AJOL)

    A subsurface sequence delineation and saline water mapping of Lagos State was carried out. Ten (10) deep boreholes with average depth of 300 m were drilled within the sedimentary basin. The boreholes were lithologically and geophysically logged. The driller's lithological logs aided by gamma and resistivity logs, ...

  8. Development Control in Lagos State: an Assessment of Public ...

    African Journals Online (AJOL)

    This submission also contains an assessment of the town planning regulation, level of compliance to building regulation and technical skills of personals monitoring compliance to space standards as specified by Urban and Regional Planning Law Decree 88 of 1992, the Lagos Planning Law of 2005 and under the Urban ...

  9. Genetic diversity of Chrysichthys nigrodigitatus in the Lagos lagoon ...

    African Journals Online (AJOL)

    s

    2012-11-13

    Nov 13, 2012 ... 1Key Laboratory of Mariculture, Ministry of Education of China, Ocean University ... 3Department of Marine Sciences, Faculty of Science, University of Lagos, ... degradation and possible changes in water quality ... MATERIALS AND METHODS ... was subsequently resuspended in 100 µl of distilled water for.

  10. Fish resources of Lagos State coastal wetlands | Ayodele | African ...

    African Journals Online (AJOL)

    Fishing is the major occupation of the people found along the coastal wetland of Lagos State. Fishing is carried out all the year round. This study examines the fishing Activities, Gear composition and fishing methods in order to obtain the fish species and harvest composition of the study area. This paper is based on the ...

  11. Attitude and Perceptions of Clinicians in Lagos to Autopsy Practice ...

    African Journals Online (AJOL)

    Using pretested questionnaire instrument, a cross sectional survey of clinicians working in the Lagos University Teaching Hospital to obtain their attitudes and perception towards autopsy practice. 230 questionnaires were administered and the response rate was 80.7% . 41.5% of respondents often requested for autopsy.

  12. Evaluation of measles vaccine cold chain in Lagos State, Nigeria ...

    African Journals Online (AJOL)

    The National (level 1), State (L2), and Local government vaccine cold stores (L3) as well as some vaccination centres (L4) were physically inspected in Lagos State, Nigeria and the potency of the live-attenuated measles vaccine was tested. Both the L1 and L2 storage facilities were formally adequately equipped and ...

  13. Perinatal Mortality Among Twins In Lagos University Teaching ...

    African Journals Online (AJOL)

    Background: Perinatal mortality rate is reported to be higher in twins than in singletons. More than two decades ago, Abudu and Agarin reported a twinning rate of 21.1/1000 maternities and perinatal mortality rate of 142.6/1000 among twins in Lagos. Objective: To determine the current perinatal mortality rate and risk factors ...

  14. Geophysical study of saline water intrusion in Lagos municipality

    African Journals Online (AJOL)

    aghomotsegin

    1Department of Applied Geophysics, Federal University of Technology, Akure, Ondo State, Nigeria. 2Lagos State ... E'. C. C'. N070 00'. E0020 300'. N060 15'. E0020 300'. N070 00'. E0040 30' ..... coastal aquifer, Youngkwang-gun, Korea.

  15. Prevalence and trends in breast cancer in Lagos state, Nigeria ...

    African Journals Online (AJOL)

    The study examined the trends in the prevalence of breast cancer in Lagos State, Nigeria. A sample of 1000 subjects was taken from a population consisting of women between the ages of 15 and 60 years spread across the 20 Local Government Areas (LGAs) of the State. Fifty questionnaires were distributed in each LGA.

  16. Radiographic diagnosis of skeletal diseases among dogs in Lagos ...

    African Journals Online (AJOL)

    Case records of dogs presented with signs of skeletal injuries at the Veterinary Teaching Hospital, Federal University of Agriculture, Abeokuta, Ogun State and Petcare Animal Hospital, Ikeja, Lagos between January, 2010 and December, 2011 were reviewed. Data recorded included breed, sex and age of the dogs, ...

  17. 236 Effective Social Work Practice in Lagos: An Emerging

    African Journals Online (AJOL)

    User

    2010-10-17

    Oct 17, 2010 ... social work profession; institutional perspective is the modern approach that is currently put in place, that ... Lagos had for long been in the fore-front of the development of social work in Nigeria .... organization has crises within or without or both; ... newly learnt ways of solving problems, so, learning effective.

  18. Ectopic Pregnancy in Lagos State University Teaching Hospital ...

    African Journals Online (AJOL)

    We set out to determine the socio-demographic factors,pattern of presentation and management of ectopic pregnancy in a University Teaching Hospital in Lagos, Nigeria. A retrospective descriptive analysis of all cases of ectopic pregnancy over a 2-year period was carried out. The case notes were retrieved from the ...

  19. Traditional Music and Dance: An Appreciation | Adedeji | Lagos ...

    African Journals Online (AJOL)

    Lagos Notes and Records. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 17 (2011) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register. DOWNLOAD FULL TEXT Open Access DOWNLOAD FULL TEXT ...

  20. A Review of Nosocomial Infection at the Lagos university Teaching ...

    African Journals Online (AJOL)

    The infection control program of the Lagos Universityteaching hospital was started in 1974 with an Infection Control team reporting to an Infection Control Committee. There is currently no functioning ... were the most common pathogens accounting for 75% of all organisms isolated. The prevalence of Staphylococcus aureus ...

  1. A prospective study of Vitamin A Utilization in Lagos, Nigeria ...

    African Journals Online (AJOL)

    Also, drug utilization studies are primary in establishing mechanisms to promote the use of this vitamin. Hence, we investigated the use of Vitamin A in 4 referral paediatric units in Lagos, Nigeria. The study was prospective with the use of questionnaires administered to those patients placed on Vitamin A therapy among 380 ...

  2. John Lyons' Chomsky: A Review Essay | Eleshin | Lagos Notes and ...

    African Journals Online (AJOL)

    Lagos Notes and Records. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 18, No 1 (2012) >. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register. DOWNLOAD FULL TEXT Open Access DOWNLOAD FULL ...

  3. Cost of Care Among Patients With Pulmonary Tuberculosis in Lagos ...

    African Journals Online (AJOL)

    Tuberculosis (TB) is a global health challenge. Currently it is the 7th leading cause of death worldwide, and Nigeria ranks fourth amongst 22 high-burden countries for the disease. This study sought to appraise the direct and indirect costs borne by TB patients attending the Chest Clinics at the Lagos State University ...

  4. Ambient air particulate matter in Lagos, Nigeria: A study using ...

    African Journals Online (AJOL)

    chemical mass balance model was used for source apportionment. ... world are: soil or entrained dust, vehicular exhaust, marine (in a city situated close ... Mn is a marker element for steel industry and can also be attributed to .... The high enrichment of Br and Pb at the three sites in Lagos is believed to be due to the heavy.

  5. Correlates of Abortion Related Maternal Mortality at the Lagos State ...

    African Journals Online (AJOL)

    This study was carried out to highlight the probable correlates of mortality among patients managed for abortion related complications at the Lagos State University Teaching Hospital, Ikeja. All patients managed for abortion related complications between 1st January 2000 and 31st December 2003 were studied. Certain ...

  6. Patent Medicine Vendors in Rural Areas of Lagos Nigeria ...

    African Journals Online (AJOL)

    Purpose: To determine the compliance of patent medicine vendors (PMVs) in rural areas of Lagos State, Nigeria with set guidelines to regulate their practice and its implications for malaria control. Methods: A baseline cross-sectional study was conducted as part of an intervention study in two rural local government areas ...

  7. Childhood Renal Neoplasms in Lagos Nigera- A 28 Year Review ...

    African Journals Online (AJOL)

    Childhood Renal Neoplasms in Lagos Nigera- A 28 Year Review. ... Most of the patients presented with abdominal mass with a unilaterally enlarged kidney, abdominal pain, haematuria and weight loss. All of them had nephrectomy as initial treatment followed by radiotherapy and chemotherapy. Nigerian Quarterly Journal ...

  8. Cytomegalovirus antibodies among healthy blood donors at Lagos ...

    African Journals Online (AJOL)

    Objectives. Cytomegalovirus (CMV) is found worldwide in all geographical locations and socio-economic groups and is the virus most frequently transmitted to a developing child before birth. This study aimed to determine the prevalence and risk factors for CMV antibodies among healthy blood donors at Lagos University ...

  9. Temporal variation in the ecology of Kuramo water, Lagos Nigeria ...

    African Journals Online (AJOL)

    Temporal variation in the ecology of Kuramo water was studied in the Lagos lagoon complex. Physicochemical parameters and heavy metals concentration were analyzed. Eight sites were marked using the geographical positioning system (GPS model-12). Water chemistry was determined for 8 months and sampling was ...

  10. Road Traffic Accident Variations in Lagos State, Nigeria: A Synopsis ...

    African Journals Online (AJOL)

    The major objective of this research is to examine the variation patterns of road traffic accident in Lagos State. The study used mostly secondary data; accident records and vehicular situation were obtained from the Nigeria police force and Federal Road Safety Commission. The data were obtained for a period of thirty two ...

  11. Urban Renewal and Associated Problems in Lagos, 1924 – 1990 ...

    African Journals Online (AJOL)

    ... traffic congestion, increase in traffic noise, air pollution, flooding, and decadent infrastructure among others. Urban/municipal infrastructure which involves specifying, designing, constructing, and maintaining several services has never had it so good in Lagos. The coordination of these infrastructure networks and services, ...

  12. Scintigraphic analysis of thyroid diseases at the Lagos University ...

    African Journals Online (AJOL)

    This paper presents a retrospective analysis of randomly selected clinical scintigraphic records at the College of Medicine/Lagos University Teaching Hospital, Nigeria. Out of the 436 patients scanned for various thyroid abnormalities, 266 (61.0%) were used for the analysis due to insufficient data and parameters required ...

  13. Comparative Study of Teenage Pregnancy in Lagos State University ...

    African Journals Online (AJOL)

    ... a comparative study of the obstetric performance of primiparous teenagers and ... 2006-31st December, 2007) in Lagos State University Teaching Hospital,Ikeja. ... The incidence of teenage pregnancy in the study population was 1.01% with ...

  14. The pattern and challenges of infertility management in Lagos, Nigeria

    African Journals Online (AJOL)

    Background: Infertility remains a threat to successful reproduction by couples desirous of pregnancy. Objective: To determine the pattern of infertility cases amongst infertile couples seeking care in Lagos University Teaching Hospital as well as challenges in their management. Methods: A review of the management of ...

  15. Knowledge And Attitude Of Youth Corps Members In Lagos To ...

    African Journals Online (AJOL)

    Sickle cell disease has remained a public health problem in Nigeria. This study was carried out to determine the knowledge and attitudes of unmarried NYSC members in Lagos State to sickle cell disease and screening. This study was a cross sectional study. Multistage sampling technique was used to select the ...

  16. The pattern and challenges of infertility management in Lagos, Nigeria

    African Journals Online (AJOL)

    EB

    Abstract. Background: Infertility remains a threat to successful reproduction by couples desirous of pregnancy. Objective: To determine the pattern of infertility cases amongst infertile couples seeking care in Lagos University Teaching. Hospital as well as challenges in their management. Methods: A review of the ...

  17. Pattern of juvenile periodontitis in Lagos University Teaching ...

    African Journals Online (AJOL)

    Objective: The aim of the survey was to study the pattern of juvenile periodontitis patients that presented at the Lagos University Teaching Hospital Dental Centre from November 1999 to March 2004. Methods: Through review of case files of patients, twenty six juvenile periodontitis patients, within the age range of 18 and 30 ...

  18. MUSIC EDUCATION AND MUSICAL ACTIVITIES IN LAGOS: THEN ...

    African Journals Online (AJOL)

    This article is a historical excursion into the musical activities in Lagos from around ... development in virtually all areas of life; political, religious, social and .... children' As an example, the cited a song composed on the occasion of the victory ..... missionaries surfaced in the church when the Pan-Africanist movement became.

  19. Human papillomavirus (HPV infection and vaccines: Knowledge, attitude and perception among female students at the University of Lagos, Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Christian Chigozie Makwe

    2012-12-01

    Conclusion: The knowledge of and the perceived susceptibility to HPV infection and HPV-related diseases among female students in the University of Lagos were generally low. The need for a well-designed HPV-educational program to bridge the knowledge gap cannot be overemphasized.

  20. Recursos hídricos en los Andes: Lago Titicaca

    Directory of Open Access Journals (Sweden)

    1995-01-01

    Full Text Available RESSOURCES EN EAUX DANS LES ANDES : LAC TITICACA. Une analyse par régression a été menée entre les variations de niveau du Lac Titicaca et les entrées du système (apports des affluents et précipitations. Les coefficients de corrélation, quoique relativement faibles, montrent aux abords du lac un effet de persistance qui diminue lorsque les stations sont éloignées du plan d’eau. L’inertie du lac se manifeste l’année suivante pour les affluents du lac et évidemment pour le lac lui-même. Ces résultats confirment la présence d’un mécanisme de rétro alimentation (effet boomerang. Cela montre que le système du Lac Titicaca est fragile, face à une utilisation excessive de ses eaux. Las regresiones estudiadas de cambios de nivel en el lago Titicaca contra precipitaciones y aportes en su cuenca, aunque relativamente bajas, muestran un efecto de persistencia en las proximidades del lago que decrece conforme las estaciones se alejan de éste. Lo que evidencia que la inercia del lago se manifiesta en el período siguiente (lag uno en los afluentes del lago y obviamente en el propio lago, fenómeno que parece confirmar la presencia de un mecanismo de retroalimentación (efecto boomerang. Este comportamiento muestra la fragilidad del lago frente a un aprovechamiento consuntivo excesivo. WATER RESOURCES IN THE ANDES: LAKE TITICACA. The studied regressions of the level changes in the Lake Titicaca versus the rainfall and the runoff in the basin, even being relatively low, show an effect of persistence in the proximity of the lake which decreases as we go away from it. This makes evident that the lake inertia manifests itself the following period (lag one in the lake tributaries and obviously in the lake itself, phenomenon which seems to confirm the presence of a feedback mechanism (boomerang effect. This behaviour shows the fragility of the lake against the excessive consumptive uses of the waters in its basin.

  1. Road Traffic Injury in Lagos, Nigeria: Assessing Prehospital Care.

    Science.gov (United States)

    Ibrahim, Nasiru A; Ajani, Abdul Wahab O; Mustafa, Ibrahim A; Balogun, Rufai A; Oludara, Mobolaji A; Idowu, Olufemi E; Solagberu, Babatunde A

    2017-08-01

    Introduction Injuries are the third most important cause of overall deaths globally with one-quarter resulting from road traffic crashes. Majority of these deaths occur before arrival in the hospital and can be reduced with prompt and efficient prehospital care. The aim of this study was to highlight the burden of road traffic injury (RTI) in Lagos, Nigeria and assess the effectiveness of prehospital care, especially the role of Lagos State Ambulance Service (LASAMBUS) in providing initial care and transportation of the injured to the hospital. A three-year, retrospective review of road traffic injured patients seen at the Surgical Emergency Room (SER) of the Lagos State University Teaching Hospital (LASUTH), Ikeja, Nigeria, from January 1, 2012 to December 31, 2014 was conducted. Parameters extracted from the Institution Trauma Registry included bio-data, date and time of injury, date and time of arrival in SER, host status, type of vehicle involved, and region(s) injured. Information on how patients came to the hospital and outcome in SER also were recorded. Results were analyzed using Statistical Package for Social Sciences (SPSS; IBM Corporation; Armonk, New York USA) version 16. A total of 23,537 patients were seen during the study period. Among them, 16,024 (68.1%) had trauma. Road traffic crashes were responsible in 5,629 (35.0%) of trauma cases. Passengers constituted 42.0% of the injured, followed by pedestrians (34.0%). Four wheelers were the most frequent vehicle type involved (54.0%), followed by motor cycles (30.0%). Regions mainly affected were head and neck (40.0%) and lower limb (29.0%). Less than one-quarter (24.0%) presented to the emergency room within an hour, while one-third arrived between one and six hours following injury. Relatives brought 55.4%, followed by bystanders (21.4%). Only 2.3% had formal prehospital care and were brought to the hospital by LASAMBUS. They also had significantly shorter arrival time. One hundred and nine patients

  2. Mothers? human papilloma virus knowledge and willingness to vaccinate their adolescent daughters in Lagos, Nigeria

    OpenAIRE

    Ezenwa, Beatrice N; Balogun, Mobolanle R; Okafor, Ifeoma P

    2013-01-01

    Beatrice N Ezenwa,1 Mobolanle R Balogun,2 Ifeoma P Okafor2 1Department of Pediatrics, 68 Nigerian Army Reference Hospital, Lagos State, Nigeria; 2Department of Community Health and Primary Care, College of Medicine, University of Lagos, Lagos State, Nigeria Introduction: Human papillomavirus (HPV) is one of the most common sexually transmitted infections in sexually active adolescents and young women and has been implicated as a cause of the majority of cases of cervical cancer, which is the...

  3. Atmospheric turbidity and the diffuse irradiance in Lagos, Nigeria

    International Nuclear Information System (INIS)

    Maduekwe, A.A.L.; Chendo, M.A.C.

    1994-06-01

    The relationships between the total hemispherical irradiance reaching the earth surface in Lagos, Nigeria and the turbidity coefficients at two wavelengths namely λ(500) and λ(880) measured with a Volz sun photometer have been investigated. Using simple piecewise linear regression relationships between the atmospheric turbidity using Angstrom turbidity coefficients and the diffuse components of solar radiation are presented. (author). 18 refs, 11 figs, 3 tabs

  4. Nigerian medical libraries in a digital age | Ibegwam | Lagos Journal ...

    African Journals Online (AJOL)

    No Abstract. Lagos Journal of Library and Information Science Vol. 1(2) 2003: 129-135. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · http://dx.doi.org/10.4314/ljlis.v1i2.35488 · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians ...

  5. Assessment of radiation protection practices among radiographers in Lagos, Nigeria

    OpenAIRE

    Eze, Cletus Uche; Abonyi, Livinus Chibuzo; Njoku, Jerome; Irurhe, Nicholas Kayode; Olowu, Oluwabola

    2013-01-01

    Background: Use of ionising radiation in diagnostic radiography could lead to hazards such as somatic and genetic damages. Compliance to safe work and radiation protection practices could mitigate such risks. The aim of the study was to assess the knowledge and radiation protection practices among radiographers in Lagos, Nigeria. Materials and Methods: The study was a prospective cross sectional survey. Convenience sampling technique was used to select four x-ray diagnostic centres in four te...

  6. Behavioral pattern of commercial public transport passengers in Lagos metropolis

    Directory of Open Access Journals (Sweden)

    Oluwaseyi Joseph Afolabi

    2017-05-01

    Full Text Available This study examined the travel behavior of commercial public transport passengers in Lagos State, Nigeria. The descriptive research survey was used in order to assess the opinions of the respondents using the questionnaire. A total of 84 samples were used as representative population, while two null hypotheses were formulated and tested using the Pearson Product Moment Correlation Coefficient at 0.05 level of significant. The results that were obtained indicated that a positive correlation exists between frequency of   travel and commuters income in Lagos Metropolis and also that a positive correlation exists between frequency of travel and distance covered by commuters in Lagos Metropolis. Secondary data was also sourced to serve as complement to the primary data, thus allowing for a robust research. Descriptive statistical tools such as percentages were also adopted to present the socio-economic characteristics in the area. Findings showed that about 57% of sampled population are male, 62 % are civil servants, 48% of respondents travel for business purposes. Also, that majority of the respondents (50% said that the commercial public transport is highly prone to accident, while about 64% of the respondents commute on daily basis. It was established that lack of transport infrastructure coupled with poor road maintenance were seen as the leading causes of inaccessibility of the area.

  7. Halitosis amongst students in tertiary institutions in Lagos state.

    Science.gov (United States)

    Arinola, J E; Olukoju, O O

    2012-12-01

    Halitosis is defined as a noticeable unpleasant odor from the mouth. It is a medico-social problem that affects a significant number of people around the world. Research reveals that nearly 50% of the adult population has halitosis. To determine level of awareness of halitosis and prevalence of the condition amongst students in tertiary institutions as a baseline survey. For this project, 100 students from three tertiary institutions in Lagos state were chosen: University of Lagos, Lagos State University, Ojo campus and Yaba College of Technology. A semi-structured questionnaire and practical testing/diagnostic tool were utilized. Data collected was collated and analyzed using Microsoft Excel 2007 and SPSS statistical software. Most of the respondents were single and Christian. Level of awareness of halitosis was high. Results showed that 15%, 2% and 22% from UNILAG, LASU and YCT respectively said they had halitosis. Using the diagnostic tool, 6%, 8% and 2% respectively were positive for halitosis. There is high level of awareness of halitosis among the respondents. The prevalence of the disorder is low, however, it is recommended that enlightenment campaigns be mounted in schools to improve level of awareness and treatment seeking.

  8. Responsabilidad Social Empresarial. Caso Centro Comercial Lago Mall

    Directory of Open Access Journals (Sweden)

    Carlos E. Torres Geisse

    2011-01-01

    Full Text Available El objetivo del artículo es el análisis de la responsabilidad empresarial para el centro comercial Lago Mall. El tipo de investigación fue un proyecto factible, descriptivo y de campo, con un diseño de tipo no experimental y transeccional. Se consideró como población al gerente de mercadeo del C.C Lago Mall, a quince (15 miembros de la comunidad interna, y a noventa (90 miembros de la comunidad externa del mismo. Las técnicas de recolección de datos aplicadas fueron: la encuesta y la entrevista. Los instrumentos fueron validados por cinco (5 expertos en gerencia social, obteniendo una confiabilidad de 0,99. Los resultados indican que en ambas dimensiones de la RSE los elementos que la integran no constituían un marco ideal para considerar a la empresa C.C. Lago Mall como socialmente responsable. Se concluye que el mismo carece de programas formales de responsabilidad social empresarial; sin embargo demuestra un compromiso con los principios de la empresa y con los valores de los empleados, donde se destacan la dignidad, identidad e integridad por los grupos de interés que se han denominado internos y externos.

  9. Factors Influencing Patronage Of Medical Tourism In Metropolitan Lagos Nigeria

    Directory of Open Access Journals (Sweden)

    Omisore

    2015-08-01

    Full Text Available Since medical tourism attract patient from various origin to seek medical services at different destinations it is paramount to consider the factors that motivate patrons decision on medical tourism. Hence this study assesses the factors influencing patronage of medical tourism in Lagos metropolis Nigeria. Lagos State is situated in the southwestern corner of Nigeria it lies within Latitudes 62N to 64N of the Equator and Longitudes 245E to 420E of the Greenwich meridian. Metropolitan Lagos is a statistical division and not an administrative unit it extends over 16 of the 20 LGAs of Lagos State it contains 88 of the population of Lagos State and includes semi-rural areas. Data were collected from primary source. Primary data collection was carried out through the use of structured questionnaire. Systematic sampling technique was employed to select 15 specialized private hospitals and 14 Public hospitals in the study area resulting to a sample size of 29 hospitals. Ten 10 patrons were contacted in each of the selected hospitals consequently 290 patrons were sampled. The study revealed three factors influencing patronage of medical tourism in the study area to be service related economic and facilities. These were further established by factor analysis result which combine service related economic factor as factor one with 29.5 variance explained and Eigen value of 5.605 Facility factor as factor two with 28.6 variance explained and Eigen value of 5.435 Service related factor as factor three with 14.7 variance explained and Eigen value of 2.788 and Economic factor as factor four with 9.2 variance explained and Eigen value of 1.754. The relevant authority in charge of health facilities in the study area would have to employ adequate manpower in-terms of doctors and other healthcare personnel across the public hospital while also regulating the scale of charges of the registered private hospitals in the study area. There is need to improve upon the

  10. Analysis of Management Practices in Lagos State Tertiary Institutions through Total Quality Management Structural Framework

    Science.gov (United States)

    AbdulAzeez, Abbas Tunde

    2016-01-01

    This research investigated total quality management practices and quality teacher education in public tertiary institutions in Lagos State. The study was therefore designed to analyse management practices in Lagos state tertiary institutions through total quality management structural framework. The selected public tertiary institutions in Lagos…

  11. Migration and Social Change in the Eastern District of Lagos: The ...

    African Journals Online (AJOL)

    The lagoon serves as a catalyst for economic development in the transformation of Lagos, most especially the eastern district. Fishing is central to the economy of Epe and the entire eastern section of Lagos. However, the fishing industry benefitted immensely from the migrating pattern and economic practices of the Mahin ...

  12. Infertility in Women: Hysterosalpingographic Assessment of the Fallopian Tubes in Lagos, Nigeria

    Science.gov (United States)

    Akinola, R. A.; Akinola, O. I.; Fabamwo, A. O.

    2009-01-01

    Tubal disease constitutes a major factor in infertility especially in developing countries. This study was undertaken to assess the hysterosalpingographic patterns seen in infertile patients in an urban centre in Lagos. Two hundred and twenty patients who reported from the gynaecology clinic to the radiology department of Lagos State University…

  13. Sedimentation Survey of Lago La Plata, Puerto Rico, July 2006

    Science.gov (United States)

    Soler-López, Luis R.

    2008-01-01

    Lago La Plata dam is located between the municipalities of Naranjito and Toa Alta in north central Puerto Rico, about 5 kilometers south of the town of Toa Alta and about 5 kilometers north of the town of Naranjito. The reservoir impounds the waters of the Rio de La Plata, the Rio Guadiana, and the Rio Ca?as, and is part of the San Juan Metropolitan Water District, which provides about 35 percent of the total water demand for the area (Soler-Lopez and others, 2000). The reservoir has a drainage area of about 469 square kilometers. The dam was constructed in 1974 and is a concrete gravity structure with a normal pool elevation of 52.00 meters above mean sea level (Puerto Rico Electric Power Authority, 1979). During October 1998, the U.S. Geological Survey (USGS), Caribbean Water Science Center, in cooperation with the Puerto Rico Aqueduct and Sewer Authority (PRASA) conducted a bathymetric survey of Lago La Plata to assess the impact of Hurricane Georges on the storage capacity of the reservoir. Between July 17 and 20, 2006, the USGS and the PRASA conducted an additional bathymetric survey of Lago La Plata to update the reservoir storage capacity and determine the reservoir sedimentation rate by comparing the 2006 survey data with the 1998 survey data.. The purpose of this report is to update the reservoir storage capacity, sedimentation rates, and areas of substantial sediment accumulation since 1998. Historical (1974) data are referenced as needed to account for long-term storage capacity loss trends...

  14. Phylogeny of Lagos bat virus: challenges for lyssavirus taxonomy.

    Science.gov (United States)

    Markotter, W; Kuzmin, I; Rupprecht, C E; Nel, L H

    2008-07-01

    Lagos bat virus (LBV) belongs to genotype 2 of the Lyssavirus genus. The complete nucleoprotein (N), phosphoprotein (P), matrixprotein (M) and glycoprotein (G) genes of 13 LBV isolates were sequenced and phylogenetically compared with other lyssavirus representatives. The results identified three different lineages of LBV. One of these lineages demonstrated sufficient sequence diversity to be considered a new lyssavirus genotype (Dakar bat lyssavirus). The suggested quantitative separation of lyssavirus genotypes using the N, P, M and G genes was also investigated using P-distances matrixes. Results indicated that the current criteria should be revised since overlaps between intergenotypic and intragenotypic variation occur.

  15. Vestígios da cultura popular em Angela Lago

    OpenAIRE

    Silva, Celso Sisto

    2004-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-graduação em Literatura A presente dissertação elabora, sob o domínio da cultura popular, e configura, sob o viés do conto popular recontado, a leitura de algumas obras da escritora brasileira para crianças, Angela Lago. Pretende-se, em primeiro lugar, identificar nos recontos da escritora, a persistência dos modelos narrativos que a tradição popular de cunho escrito mantev...

  16. Iron stores in regular blood donors in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Adediran A

    2013-06-01

    Full Text Available Adewumi Adediran,1 Ebele I Uche,2 Titilope A Adeyemo,1 Dapus O Damulak,3 Akinsegun A Akinbami,4 Alani S Akanmu1 1Department of Hematology and Blood Transfusion, University of Lagos, Lagos, Nigeria; 2Department of Hematology and Blood Transfusion, Lagos University Teaching Hospital, Lagos, Nigeria; 3Department of Hematology and Blood Transfusion, Jos University Teaching Hospital, Jos, Nigeria; 4Department of Hematology and Blood Transfusion, Lagos State University, Ikeja, Nigeria Background: Apart from challenging the bone marrow to increase its red cell production, thereby producing more blood for the donor, regular blood donation has been shown to have several benefits, one of which is preventing accumulation of body iron which can cause free radical formation in the body. This study was carried out to assess body iron stores in regular blood donors. Methods: A total of 52 regular (study and 30 first-time (control volunteer blood donors were studied prospectively. Twenty milliliters of venous blood was drawn from each subject, 5 mL of which was put into sodium ethylenediamine tetra-acetic acid specimen bottles for a full blood count, including red blood cell indices. The remaining sample was allowed to clot in a plain container, and the serum was then retrieved for serum ferritin, serum iron, and serum transferrin receptor measurement by enzyme-linked immunosorbent assay. Results: Mean hemoglobin and packed cell volume in the study group (13.47 ± 2.36 g/dL and 42.00 ± 7.10, respectively, P = 0.303 were not significantly higher than in the control group (12.98 ± 1.30 g/dL and 39.76 ± 4.41, respectively, P = 0.119. Mean serum ferritin was 102.46 ± 80.26 ng/mL in the control group and 41.46 ± 40.33 ng/mL in the study group (P = 0.001. Mean serum ferritin for women in the study group (28.02 ± 25.00 ng/mL was significantly lower than for women in the control group (56.35 ± 34.03 ng/mL, P = 0.014. Similarly, men in the study group had a lower

  17. Healthcare waste management status in Lagos State, Nigeria: a case study from selected healthcare facilities in Ikorodu and Lagos metropolis.

    Science.gov (United States)

    Longe, Ezechiel O

    2012-06-01

    A survey of healthcare waste management practices and their implications for health and the environment was carried out. The study assessed waste management practices in 20 healthcare facilities ranging in capacity from 40 to 600 beds in Ikorodu and metropolitan Lagos, Lagos State, Nigeria. The prevailing healthcare waste management status was analysed. Management issues on quantities and proportion of different constituents of waste, segregation, collection, handling, transportation, treatment and disposal methods were assessed. The waste generation averaged 0.631 kg bed(-1) day(-1) over the survey area. The waste stream from the healthcare facilities consisted of general waste (59.0%), infectious waste (29.7%), sharps and pathological (8.9%), chemical (1.45%) and others (0.95%). Sharps/pathological waste includes disposable syringes. In general, the waste materials were collected in a mixed form, transported and disposed of along with municipal solid waste with attendant risks to health and safety. Most facilities lacked appropriate treatment systems for a variety of reasons that included inadequate funding and little or no priority for healthcare waste management as well as a lack of professionally competent waste managers among healthcare providers. Hazards associated with healthcare waste management and shortcomings in the existing system were identified.

  18. Shapefile of the bathymetric contours of Lago Lucchetti, Puerto Rico, September 2013-May 2014

    Data.gov (United States)

    Department of the Interior — The U.S. Geological Survey conducted a sedimentation survey of Lago Lucchetti, Yauco, Puerto Rico, in 2013–14 in cooperation with the Puerto Rico Aqueduct and Sewer...

  19. Economic Analysis of the Marketing of Fruit in Lagos State of Nigeria ...

    African Journals Online (AJOL)

    Economic Analysis of the Marketing of Fruit in Lagos State of Nigeria (A case study of Oyingbo, Oshodi and Ikotun ... PROMOTING ACCESS TO AFRICAN RESEARCH ... This implies a wide gap in prices between wholesalers and retailers.

  20. Prevalence of Low Back Pain Among Traffic Wardens in Lagos State ...

    African Journals Online (AJOL)

    to determine the prevalence of low back pain and its associated risk factors among traffic wardens. ... in regulating traffic also has a significant influence on the severity of LBP. ... wardens in Lagos State, who assume a standing position for.

  1. Focalización y modalidad en el "Lanzarote del Lago" (ms. 9611 BNE

    Directory of Open Access Journals (Sweden)

    Antonio Contreras Martín

    2009-12-01

    Full Text Available The purpose of this paper is to analise the point of view and the varitions of the speech in Lanzarote del Lago (BNE ms 9611 to observe how the compilator worked the French source, Lancelot en prose.

  2. LBA-ECO LC-07 Bathymetric Survey of Floodplain Lake, Lago Curuai, Para, Brazil: 2004

    Data.gov (United States)

    National Aeronautics and Space Administration — The bathymetry data provided represent a continuous surface of interpolated point measurements of depth values of Lago Curuai, an Amazon River floodplain lake,...

  3. LBA-ECO LC-07 Bathymetric Survey of Floodplain Lake, Lago Curuai, Para, Brazil: 2004

    Data.gov (United States)

    National Aeronautics and Space Administration — ABSTRACT: The bathymetry data provided represent a continuous surface of interpolated point measurements of depth values of Lago Curuai, an Amazon River floodplain...

  4. Rabia transmitida por murciélagos en Brasil

    Directory of Open Access Journals (Sweden)

    Willian Oliveira Fahl

    2015-09-01

    Full Text Available Frente al desafío que la rabia representa para la industria pecuaria y la salud pública en América Latina, el presente artículo tiene como objetivo hacer una revisión de literatura amplia y crítica sobre la epidemiología de la rabia transmitida por murciélagos en Brasil. El tema es abordado inicialmente desde una perspectiva histórica hasta la caracterización molecular de aislamientos del virus, para finalmente contrastar con la situación de otros países de las Américas. La información referente a Brasil es presentada de manera separada debido a la gran abundancia de especies de murciélagos de diversos hábitos alimenticios, implicadas en la transmisión del virus de la rabia y las complejas relaciones entre los ciclos epidemiológicos revelados por estudios de tipificación antigénica y análisis filogenético, lo  cual ha permitido reconocer con más nitidez, la importancia de los quirópteros como reservorios y transmisores de esta enfermedad.  Este nuevo escenario epidemiológico exige reexaminar las medidas de control aplicadas hasta el momento, desde un abordaje multidisciplinar, así como cooperación intersectorial y participación por parte de la comunidad.

  5. Tilapia africana en el Lago de Nicaragua: ecosistema en transición.

    Directory of Open Access Journals (Sweden)

    Jeffrey K. McCrary

    1998-10-01

    Full Text Available Los grandes lagos de Nicaragua, son comparables con el sistema de grandes lagos africanos. Contienen una gran diversidad de peces, incluyendo varios peces endémicos de la familia Cichlidae. La captura de peces en el Lago de Cocibolca, estandarizada en 100 metros de red, promedió 4.34 kilogramos en el área de Ometepe, en donde la tilapia constituyó el 1.5 % del peso total de la captura. Este promedio fue de 0.80 kilogramos en la costa septentrional, donde la tilapia constituyó 54% del peso total de la captura. Un estudio ruso efectuado en 1983 y desarrollado en todo el Lago, demostró que el promedio era de 4.66 kilogramos. Los autores del presente artículo recomiendan que en el Lago Cocibolca se implemente un plan de manejo adecuado para controlar la población de tilapia y rescatar un ecosistema en peligro de colapso

  6. Examination of Estate Marketing Practices in Ikeja, Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Joseph Oyewale Oyedeji

    2017-09-01

    Full Text Available Estate marketing is an aspect of the profession of Estate Surveying and Valuation in Nigeria. Previous studies on estate marketing identified that there are challenges affecting estate marketing and the resultant effect on these challenges affects the credibility of the profession of Estate Surveying and Valuation in Nigeria. This necessitates the need to examine the practice of estate marketing in Nigeria. This study examined estate marketing practice among estate surveyors and valuers in Ikeja, Lagos Nigeria. The sample size for the study is the 64 registered Estate Surveying and Valuation firms in the study area. Data gathered were analyzed using descriptive statistics and 5-point likert ordinal scale. Findings from the study revealed that the use of brochure or bulletin is the most common estate marketing method in the study area. Also, it was revealed from the study that the use of press is the most cost effective method of estate marketing in the study area. The study identified the various challenges of estate marketing. However, collection of double professional fees is the most prevalent challenge of estate marketing in the study area. Finally, aggressive marketing which leads to unethical practices is the most prevalent mitigating measures adopted by Estate Surveyors and Valuers in the study area. Recommendations were made on how to review the ethical regulations guiding the practice of Estate Surveying and Valuation which will consequently improve marketing in the study area.

  7. Congenital club foot in a teaching hospital in Lagos, Nigeria.

    Science.gov (United States)

    Adewole, O A; Giwa, S O; Kayode, M O; Shoga, M O; Balogun, R A

    2009-06-01

    Congenital club foot has been sparsely reported in literature in Nigeria, although it has been reported as the commonest congenital musculoskeletal abnormality. This study enumerates the point prevalence of this disease in a university teaching hospital in Lagos. Better understanding of the epidemiology in our community should improve awareness, and influence management. Between June 2005 and July 2006, 72 consecutive patients with congenital club feet were seen in the orthopaedic clinic of our Hospital. Demographic data, birth weight, family history, birth facility, maternal age and associated congenital anomalies were recorded and analysed using Statistical Programme for Social Sciences (SPSS) version 15. A total of 72 patients were seen, 28 of whom had bilateral club feet resulting in a total of 100 feet. There were 38 males and 34 females. Only 29% presented in the first month of life and 28% in the second month. Maternal ages ranged between 19 and 38 years and no family history of congenital club foot was given,. Babies delivered outside the orthodox medical system (churches, traditional healers, home etc) constituted 28%. The commonest associated congenital anomalies were tibia hemimelia, hydrocephalus, inguinal hernia and umbilical hernia. A default rate of 28% was observed during treatment. Congenital club foot may not be uncommon in Nigeria. Late presentation and high default rate before correction of the deformity were observed. Establishment of special club foot clinics should reduce the default rate. Training of healthcare workers in maternity units as well as Public awareness should encourage early referral to specialists.

  8. La Sabana de Bogotá y su lago en el Pleniglacial Medio

    Directory of Open Access Journals (Sweden)

    Hamenn Thomas Van Der

    1986-12-01

    Full Text Available Durante buena parte del Pleistoceno (últimos  2.5 millones de años, la Sabana de Bogotá fue un lago. En su extensa historia presenta cambios frecuentes de nivel, especialmente durante las épocas interglaciales en las cuales el lago se contraía y dejaba una amplia zona pantanosa y boscosa entre su orilla y el pie de los cerros (VAN DER HAMMEN & GONZÁLEZ 1960-1963; HOOGHIEMSTRA,1984. Durante el último interglacial y en los interestadiales y estadiales de la parte temprana del último glacial existía un lago relativamente grande; en los bordes y especialmente en la parte baja de los valles que desembocan a la Sabana (como el de Tenjo se encontraba vegetación pantanosa, especialmente con Alnus acuminata (Aliso acompañado en ocasiones de Weinmannia sp. y Vallea stipularis.

  9. Diez años de monitoreo limnológico de un lago natural modificado en los trópicos: el lago Cote, Costa Rica

    Directory of Open Access Journals (Sweden)

    Gerardo Umaña

    2014-08-01

    Full Text Available Esta localizado a 650m sobre el nivel del mar en el límite entre las llanuras del Norte y la vertiente del Pacífico en la Cordillera de Guanacaste, Costa Rica. Al inicio de la década de 1980 se construyó una represa en el río de desagüe y el caudal de salida fue desviado hacia el Embalse Arenal. Se realizó un primer estudio entre 1990 y 1991, y luego en el año 2001 antes de que se construyera una nueva modificación del lago mediante el levantamiento del nivel de la presa en un metro con el fin de utilizar la descarga para la producción de energía hidroeléctrica. Del 2002 al 2010 se realizó un monitoreo limnológico dos veces al año. Aquí se presenta un análisis de las principales características y de los cambios a través del tiempo. El lago es polimíctico discontinuo y desarrolla una termoclina intermitente a 6m de profundidad, la cual puede perdurar por varios días o semanas a juzgar por el desarrollo de una capa anóxica cercana al fondo. Desde su modificación la temperatura superficial del lago ha alcanzado valores mayores a los reportados con anterioridad. El hipolimnion muestra periodos de hipoxia a anoxia que se han vuelto más frecuentes. A pesar de la turbidez del lago, la concentración de nutrientes y de clorofila a son bajos. La tendencia en tiempos recientes es a una reducción de la clorofila a y un aumento en la trasparencia del agua. Estos cambios son similares a los observados en lagos donde se ha logrado atribuirlos al cambio climático global. También se pueden deber a la modificación del flujo del efluente por la operación intermitente de la planta hidroeléctrica, que favorece la acumulación de calor en la columna de agua. Esto debido a que otros factores, como el cambio en el uso del suelo en los alrededores del lago ocurrieron en la década de 1980, por lo que no se les puede atribuir una influencia en los cambios observados en los últimos 10 años.

  10. Using satellite images to monitor glacial-lake outburst floods: Lago Cachet Dos drainage, Chile

    Science.gov (United States)

    Friesen, Beverly A.; Cole, Christopher J.; Nimick, David A.; Wilson, Earl M.; Fahey, Mark J.; McGrath, Daniel J.; Leidich, Jonathan

    2015-01-01

    The U.S. Geological Survey (USGS) is monitoring and analyzing glacial-lake outburst floods (GLOFs) in the Colonia valley in the Patagonia region of southern Chile. A GLOF is a type of flood that occurs when water impounded by a glacier or a glacial moraine is released catastrophically. In the Colonia valley, GLOFs originating from Lago Cachet Dos, which is dammed by the Colonia Glacier, have recurred periodically since 2008. The water discharged during these GLOFs flows under or through the Colonia Glacier, into Lago Colonia and then the Río Colonia, and finally into the Río Baker—Chile's largest river in terms of volume of water.

  11. Utilization of Oral Health Care Services by University Undergraduates in Lagos, Nigeria.

    Science.gov (United States)

    Makanjuola, J O; Uti, O G; Sofola, O O

    2015-01-01

    Data on the utilization of the available oral health facilities by university undergraduates is scarce in Nigeria. To determine the level of utilization of oral health care services and to identify the barriers to seeking treatment among University of Lagos students. A cross-sectional survey was carried out among University of Lagos undergraduates. Systematic sampling was used to select participants after randomly selecting a male and female hostel. Self-administered questionnaires were distributed to participants and collected immediately. The data was analyzed using Epi info version 6.04 software. Statistical significance was evaluated with chi square test and p-value facilities.

  12. Lagos bat virus transmission in an Eidolon helvum bat colony, Ghana.

    Science.gov (United States)

    Freuling, Conrad M; Binger, Tabea; Beer, Martin; Adu-Sarkodie, Yaw; Schatz, Juliane; Fischer, Melina; Hanke, Dennis; Hoffmann, Bernd; Höper, Dirk; Mettenleiter, Thomas C; Oppong, Samual K; Drosten, Christian; Müller, Thomas

    2015-12-02

    A brain sample of a straw-coloured fruit bat (Eidolon helvum) from Ghana without evident signs of disease tested positive by generic Lyssavirus RT-PCR and direct antigen staining. Sequence analysis confirmed the presence of a Lagos bat virus belonging to phylogenetic lineage A. Virus neutralization tests using the isolate with sera from the same group of bats yielded neutralizing antibodies in 74% of 567 animals. No cross-neutralization was observed against a different Lagos bat virus (lineage B). Copyright © 2015 Elsevier B.V. All rights reserved.

  13. Planeamiento estratégico de la empresa ABR Lagos S.A.C.

    OpenAIRE

    Zuloeta Lagos, Bujarin Jaime

    2016-01-01

    La presente investigación tiene por finalidad desarrollar un Plan Estratégico para la empresa ABR Lagos S.A.C. para el periodo 2016-2020, con lo cual se busca consolidar su permanencia en el mercado peruano, incrementar su rentabilidad y mejorar la calidad del servicio. ABR Lagos S.A.C. es una empresa especializada en la fabricación e instalación de estructuras metálicas, la cual con casi siete años en el mercado ha mostrado un significativo crecimiento en las ventas. Para el logro del objeti...

  14. Fixed drug eruption at a dermatology clinic in Lagos, Nigeria

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    Olusola Olabisi Ayanlowo

    2015-01-01

    Full Text Available Background: Fixed drug eruption (FDE is common cutaneous drug eruption characterized by the development of one or more annular, oval, erythematous, and hyperpigmented patches as a result of systemic exposure to a drug. Drugs causing FDE vary with prevailing diseases and prescription pattern in different parts of the world. This study is aimed at reviewing cases of FDE seen at the dermatology outpatient clinic of Lagos University Teaching Hospital (LUTH over a 9-year period, highlighting the spectrum of drugs implicated and the clinical characteristics. Materials and Methods: Data were obtained from the clinic records and patients' case notes. These included the demographic details, duration of presentation, drugs implicated, and clinical characteristics. Results: FDE was diagnosed in 1.8% (295/16,160 of patients seen. There was a slight female preponderance. Antimalarials were the commonest group of medications implicated (51.0% followed by antibiotics (27.9%; analgesics (10.2%, herbal toothpaste (6.1%, and oral hypoglycemic agents (4.1%. Sulfonamides were the commonest group of drugs found in 78 patients (53.1% predominantly as sulfadoxine/pyrimethamine antimalarials and trimethoprim/sulfamethoxazole antibiotics (co-trimoxazole. Conclusion: Concerted efforts are needed to discourage over-the-counter sales and purchase of nonprescription sulfonamide-based medications. A change in prescription pattern from sulfonamides to other classes of antimalarials and antibiotics is desirable and/or recommended. Patients should inform their caregivers at any point of care about their reaction to drugs. It is advised that they have a list of common implicating drugs and they wear a medic alert or carry an ID card bearing this information.

  15. Herbal medicine use among urban residents in Lagos, Nigeria

    Science.gov (United States)

    2011-01-01

    Background Over three-quarter of the world's population is using herbal medicines with an increasing trend globally. Herbal medicines may be beneficial but are not completely harmless. This study aimed to assess the extent of use and the general knowledge of the benefits and safety of herbal medicines among urban residents in Lagos, Nigeria. Methods The study involved 388 participants recruited by cluster and random sampling techniques. Participants were interviewed with a structured open- and close-ended questionnaire. The information obtained comprises the demography and types of herbal medicines used by the respondents; indications for their use; the sources, benefits and adverse effects of the herbal medicines they used. Results A total of 12 herbal medicines (crude or refined) were used by the respondents, either alone or in combination with other herbal medicines. Herbal medicines were reportedly used by 259 (66.8%) respondents. 'Agbo jedi-jedi' (35%) was the most frequently used herbal medicine preparation, followed by 'agbo-iba' (27.5%) and Oroki herbal mixture® (9%). Family and friends had a marked influence on 78.4% of the respondents who used herbal medicine preparations. Herbal medicines were considered safe by half of the respondents despite 20.8% of those who experienced mild to moderate adverse effects. Conclusions Herbal medicine is popular among the respondents but they appear to be ignorant of its potential toxicities. It may be necessary to evaluate the safety, efficacy and quality of herbal medicines and their products through randomised clinical trial studies. Public enlightenment programme about safe use of herbal medicines may be necessary as a means of minimizing the potential adverse effects. PMID:22117933

  16. Self-medication for infants with colic in Lagos, Nigeria

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    Oshikoya Kazeem A

    2009-02-01

    Full Text Available Abstract Background Infantile colic is a self-limiting condition that is distributed worldwide. It is often misdiagnosed as an organic disease for which an infant is admitted to the hospital. Many studies have described the aetiopathogenesis, pharmacologic and non-pharmacologic management of colic but none has evaluated self-medication for infants with colic. The aim of this study was therefore to determine the knowledge of Nigerian mothers about colic, their home-based management, extent of self-medication for the infants with colic and the types of medicines involved. Methods It is a prospective study conducted at the vaccination clinics of 20 primary health care centres, each from different Local Government Areas in Lagos, Nigeria. Eight hundred mothers that brought their infants for vaccination between April and September, 2006 were interviewed with open-and close-ended questionnaire. Results Six hundred and eighty three (85.4% mothers claimed they had a good knowledge of colic. Incessant and excessive cry was the main clinical feature of colic identified by 430(62.9% mothers. Three hundred and seventy eight (67.7% infants were treated by self-medication, 157 (28.1% sought medical intervention and 17 (3.1% were treated at a traditional birth attendant home. Herbal medicines constituted 51.8% of the self-medicated medicines, of which 48 (26.2% were "Ororo Ogiri". Nospamin® (49.5% and Gripe water® (43.0% were the two frequently prescribed and self-medicated medicines for infants with colic. Conclusion Nigerian mothers are deficient in their knowledge of colic. Self-medication was the most frequently used home-based intervention. Health education would appear necessary to improve parental management of this self-limiting condition.

  17. Assessment of Day Caring Methods among Civil Servant Mothers of Reproductive Age in Lagos State Nigeria

    Science.gov (United States)

    Akinnubi, Caroline Funmbi

    2016-01-01

    This study examined the day caring methods among the civil servants of reproductive age with children between three months to four years in Lagos State Nigeria. The research design employed for this study was a descriptive research design. A total number of 212 teachers and 128 ministry workers making a total of 340 reproductive age mothers were…

  18. Ecological health status of the Lagos wetland ecosystems: Implications for coastal risk reduction

    Science.gov (United States)

    Agboola, Julius I.; Ndimele, Prince E.; Odunuga, Shakirudeen; Akanni, Adeniran; Kosemani, Bosede; Ahove, Michael A.

    2016-12-01

    Lagos, a major urban agglomeration in the world is characterized by wetlands and basin for upstream rivers such as Ogun, Oshun and Yewa Rivers. Ongoing environmental pressures exerted by large-scale land reclamation for residential quarters, refuse and sewage dumping, and other uses, however, are suspected to have had a substantial impact on ecological health of the Lagos wetland ecosystems over the last few decades. To determine the impact of these pressures, we examined spatial changes in three wetlands areas- Badore/Langbasa (BL), Festac/Iba/Ijegun (FI) and Ologe/Otto-Awori (OO) through field sample collection and analyses of surface water, sediments, air-water interface gas fluxes and vegetations. Surface water conductivity, total suspended solids (TSS), alkalinity, chloride, biological oxygen demand (BOD), nitrate, phosphate and heavy metals (Zn, Cu, Fe, Na, Mn, Pb, Cd, K and Ni) exhibited relative spatial stability while other water quality parameters varied significantly (P International Union for Conservation of Nature (IUCN). There are indications of steady rise in greenhouse gas levels in Lagos since air CO2 value at BL have reached global threshold of 400 ppm with OO and FI closely approaching. We conclude that the Lagos wetland ecosystems, especially OO and FI still have some semblance of natural habitat. However, further destruction and unwise use of the resources could cause damage to physical, chemical, geological and biological processes in nature, which could result to grave socio-economic and cultural consequences to the local communities whose livelihood and lifestyle depend on these valued wetlands.

  19. Reprint of Ecological health status of the Lagos wetland ecosystems: Implications for coastal risk reduction

    Science.gov (United States)

    Agboola, Julius I.; Ndimele, Prince E.; Odunuga, Shakirudeen; Akanni, Adeniran; Kosemani, Bosede; Ahove, Michael A.

    2016-12-01

    Lagos, a major urban agglomeration in the world is characterized by wetlands and basin for upstream rivers such as Ogun, Oshun and Yewa Rivers. Ongoing environmental pressures exerted by large-scale land reclamation for residential quarters, refuse and sewage dumping, and other uses, however, are suspected to have had a substantial impact on ecological health of the Lagos wetland ecosystems over the last few decades. To determine the impact of these pressures, we examined spatial changes in three wetlands areas- Badore/Langbasa (BL), Festac/Iba/Ijegun (FI) and Ologe/Otto-Awori (OO) through field sample collection and analyses of surface water, sediments, air-water interface gas fluxes and vegetations. Surface water conductivity, total suspended solids (TSS), alkalinity, chloride, biological oxygen demand (BOD), nitrate, phosphate and heavy metals (Zn, Cu, Fe, Na, Mn, Pb, Cd, K and Ni) exhibited relative spatial stability while other water quality parameters varied significantly (P International Union for Conservation of Nature (IUCN). There are indications of steady rise in greenhouse gas levels in Lagos since air CO2 value at BL have reached global threshold of 400 ppm with OO and FI closely approaching. We conclude that the Lagos wetland ecosystems, especially OO and FI still have some semblance of natural habitat. However, further destruction and unwise use of the resources could cause damage to physical, chemical, geological and biological processes in nature, which could result to grave socio-economic and cultural consequences to the local communities whose livelihood and lifestyle depend on these valued wetlands.

  20. A Ten-Year Review of Childhood Renal Admissions into the Lagos ...

    African Journals Online (AJOL)

    Background: The exact burden of childhood renal disease among Nigerians, particularly in the Lagos environment is not known. Local literature by focusing on the nephortic syndrome seemingly gives the impression that it constitutes the most important and perhaps the most common of these diseases. In practices however ...

  1. El ultrasonido: desde el murciélago hasta la cardiología no invasiva

    Directory of Open Access Journals (Sweden)

    Fabián Dávila

    2017-03-01

    Conclusiones: Grandes avances se han logrado en consecuencia con la evolución del ultrasonido en medicina, su inicio en la ecolocalización descrita en los murciélagos hasta la ultrasonografía cardiaca en 3 D, han permitido el desarrollo de nuevas no invasivas en la medicina cardiovascular.

  2. Floral diversity in the wetlands of Ibeju-Lekki Area, Lagos, Nigeria ...

    African Journals Online (AJOL)

    Until very recently poor attention has been given to the management of wetlands in Nigeria despite their significance in the global food and water supply, energy needs and disaster management. Due to the rapid development of the Lagos coastal areas for commerce and industrial purposes, the natural coastal vegetation ...

  3. Exploitation of Factory Workers: A Study of Union Dicon Salt, Lagos ...

    African Journals Online (AJOL)

    The study examined labour exploitation in Nigeria with particular reference to Union Dicon Salt Plc., Lagos. The review of literature points to the fact that exploitation of the factory workers in the long run leads to strained relationships between management and staff. The situation becomes conflictual to the extent that both ...

  4. Decision scenario analysis for addressing sediment accumulation in Lago Lucchetti, Puerto Rico

    Science.gov (United States)

    A Bayesian belief network (BBN) was used to characterize the effects of sediment accumulation on water storage capacity of a reservoir (Lago Lucchetti) in southwest Puerto Rico and the potential of different management options to increase reservoir life expectancy. Water and sedi...

  5. Levels of Job Satisfaction and Performance of Sports Officers in Lagos State Secondary Schools

    Science.gov (United States)

    Onifade, Ademola; Keinde, Idou; Kehinde, Eunice

    2009-01-01

    The purpose of this paper was to examine the relationship between job satisfaction levels of sports officers and sports performance of secondary schools in Lagos State. Data were collected from 200 subjects across 10 Local Education Districts. Job Descriptive Index was used to determine job satisfaction while performance in the Principals' Soccer…

  6. Investigation into ivory trade in selected markets and hotels in Lagos ...

    African Journals Online (AJOL)

    The market growth for wildlife trophy collection is gradually leading to a decline in animal population. Thus, trade in ivory constitutes a potential threat to biodiversity conservation. The extent of this treat was therefore investigated via a 3-month survey of trade in ivory in selected markets and hotels in Lagos, Nigeria.

  7. An Examination of Tenure Security for Urban Crop Farming in Lagos ...

    African Journals Online (AJOL)

    The study examined issues surrounding tenure security of land for urban crop farming and identified constraints that must be dealt with in order to facilitate land accessibility and productivity of urban crop farmers in the Lagos metropolis. 475 respondents of seven communities were selected through simple random sampling ...

  8. Selenium deficiency and pregnancy outcome in pregnant women with HIV in Lagos, Nigeria.

    Science.gov (United States)

    Okunade, Kehinde S; Olowoselu, Olusola F; Osanyin, Gbemisola E; John-Olabode, Sarah; Akanmu, Sulaimon A; Anorlu, Rose I

    2018-04-16

    To investigate the prevalence of maternal selenium deficiency and its effects on pregnancy outcomes in pregnant women with HIV in Lagos, Nigeria. The present descriptive cross-sectional study enrolled women aged 15-49 years with HIV who were at 14-26 weeks of a singleton pregnancy and were attending Lagos University Teaching Hospital, Lagos, Nigeria, between August 1, 2016, and April 30, 2017. Participants were selected by consecutive sampling and baseline data were collected through interviews. Venous blood samples were obtained to measure selenium concentrations, and associations between low maternal selenium concentrations (defined as <0.89 μmol/L) and pregnancy outcomes were examined using bivariate and multivariate analysis. The final analysis included 113 patients; selenium deficiency was recorded in 23 (20.4%) patients. Women with selenium deficiency had an approximately eight-fold higher risk of preterm delivery (adjusted odds ratio 7.61, 95% confidence interval 4.37-18.89; P=0.031) and of delivering a term neonate with a low delivery weight (adjusted odds ratio 8.11, 95% confidence interval 3.27-17.22; P=0.012), compared with women with a normal selenium concentration. The prevalence of selenium deficiency among pregnant women with HIV in Lagos was relatively high. The significant associations observed between maternal selenium deficiency and adverse pregnancy outcomes could have implications for the future management of HIV in pregnancy. © 2018 International Federation of Gynecology and Obstetrics.

  9. PMN-Portuguese Meteor Network and OLA-Observatório do Lago Alqueva agreement

    Science.gov (United States)

    Saraiva, C.

    2018-01-01

    The PMN-Portuguese Meteor Network has two new video meteor detecting systems at OLA- Observartório do Lago Alqueva, situated at the South East Portuguese territory with a pristine night sky and more than 290 clear nights each year.

  10. a multi-period markov model for monthly rainfall in lagos, nigeria

    African Journals Online (AJOL)

    PUBLICATIONS1

    A twelve-period. Markov model has been developed for the monthly rainfall data for Lagos, along the coast of .... autoregressive process to model river flow; Deo et al. (2015) utilized an ...... quences for the analysis of river basins by simulation.

  11. Seccional del Lago Lleu Lleu extracto del resumen ejecutivo del estudio

    Directory of Open Access Journals (Sweden)

    Manuel Durán

    2000-08-01

    Full Text Available En el siguiente reportaje se presentan los estudios contratados por el MINVU Planes Seccionales del Lago Lleu Lleu y del Lago Pangue; realizados por las oficinas de Manuel Durán y Lira y Peña Asoc. A continuación entrevistamos al Sr. Tito Rojas, ex Director Regional de SERNATUR y actual Gobernador de la Provincia de Arauco, y a Patricio Aguirre, Director de la Carrera de Turismo del DUOC-UC sede Concepción. Mientras que los instrumentos de planificación desarrollan estrategias específicas para potenciar el turismo aprovechando las potencialidades del recurso lacustre; los entrevistados nos dan su opinión en cuanto a diversos aspectos relacionados con el turismo y los lagos de esta zona: el delicado equilibrio entre turismo y protección de los recursos; las potencialidades de las áreas aledañas a los lagos Pangue y Lleu Lleu; el patrimonio paisajístico y cultural de la provincia de Arauco, entre otros, son los aspectos que se exponen en las próximas páginas.

  12. Perceptions and Concerns about Inclusive Education among Students with Visual Impairments in Lagos, Nigeria

    Science.gov (United States)

    Brydges, Colton; Mkandawire, Paul

    2017-01-01

    This article examines the perceptions of inclusive education in Lagos, Nigeria, based upon in-depth interviews conducted with students with visual impairments during the month of July 2013. The results and discussions are situated within critical disability theory. Despite decades of inclusive education policies, the findings of the study show…

  13. The Influence of Travel Time on Accessibility in Lagos Island | Atubi ...

    African Journals Online (AJOL)

    The aim of this paper is to establish the influence of time on accessibility in Lagos Island, Nigeria. It was observed that generally, average driving speed was observed to be lower over short than over long distance routes. High speeds tend to be concentrated within a distance band of over 2.7km but beyond 6.0km average ...

  14. Work-Life Balance among academic staff of the University of Lagos ...

    African Journals Online (AJOL)

    Work-Life Balance among academic staff of the University of Lagos. ... Abstract. Work-life balance is associated with the maintenance of stability in both one's professional and personal life. It is key to the welfare and, subsequently, job satisfaction and productivity of employees. It is against this understanding that this study ...

  15. Trust in government and the politics of fuel subsidy removal in Lagos

    African Journals Online (AJOL)

    JOHNSON-AYODELE

    It covered the three senatorial districts in Lagos using data obtained from 220 .... data in Africa, there is a significant impact of trust in government on citizens' beliefs that .... about a quarter of Nigeria's total gross domestic product, in the face of oil ... 40.0. 10.0. 100.0. Religion. Christianity. Islam. Traditional/Others. Total. 180.

  16. Within salvation: girl hawkers and the colonial state in development era Lagos.

    Science.gov (United States)

    George, Abosede

    2011-01-01

    For almost two decades between the close of the Second World War and Nigerian independence in 1960, the British colonial state which faced a crisis of legitimacy in Lagos upheld city ordinances that made itinerant trading by young children in Lagos a punishable status offense. Although anti-trading regulations were gender-neutral in their language, girls were disproportionately sanctioned for engaging in street trading and related activities. In defending their concentration on girl sellers over boy sellers, colonial welfare officials painted a picture of the urban context as an inherently dangerous context and of girls as being particularly at risk of violent assault in the city, making them particularly in need of protection from town life. Sources which show that parents generally resisted or ignored the street trading regulations and continued permitting their daughters to sell despite entreaties, warnings, or fines from colonial officials, suggest that African parents and British colonial officials may have had conflicting views on the inherent danger of the city, on what constituted child endangerment, and on the gendered nature of childhood. This article argues that the girl saving campaigns of development era Lagos were as much about the legitimization of a colonial state facing a crisis of legitimacy as they were about debates between African parents and colonial welfare officials in Lagos concerning ideas of children and childhood and the dangers of street trading by African girls.

  17. Coastal Dump Sites in the Lagos lagoon and toxicity of their ...

    African Journals Online (AJOL)

    An assessment of the coastal dumpsites and their impacts on shrimp mortality in the Lagos lagoon was investigated. The study involved a census of dumpsites in the major sections of the coastline associated with anthropogenic activities, followed by specific bioassay to determine the acute toxicity of leachates from one of ...

  18. The Succession Dispute to the Throne of Lagos and the British ...

    African Journals Online (AJOL)

    info

    the early years of his reign Adele won popularity by making lavish gifts to his chiefs. This royal largesse ..... thousand followers had left Lagos in about fifty or sixty canoes to Badone, a village on ..... their influence in a more spectacular fashion.

  19. Ocular findings seen among the staff of an institution in Lagos, Nigeria

    African Journals Online (AJOL)

    Background:The degree to which ocular morbidity affects workers productivity in the developing countries has not been studied adequately. A federal government research institute based in Lagos introduced an annual health screen for all its workers, which included eye tests. This provided an opportunity to study the ...

  20. Transnational business and family strategies among Chinese/Nigerian couples in Guangzhou and Lagos

    NARCIS (Netherlands)

    Lan, S.

    2015-01-01

    Based on ethnographic fieldwork in Guangzhou and Lagos, this paper explores transnational trade activities and family strategies among Chinese/Nigerian interracial couples in the context of growing China/Africa trade relations and the recent tightening of China's immigration control. It examines how

  1. Long stay patients in a psychiatric hospital in Lagos, Nigeria | Taiwo ...

    African Journals Online (AJOL)

    Objective: In the face of recently introduced government health reform and the dwindling number of available beds for acutely ill patients, a cross sectional study was carried out on long-stay patients at the 100 years old psychiatric hospital Yaba, Lagos, Nigeria with a view to discharging most of them. Method: Necessary ...

  2. Reparación del cartílago articular con injerto libre de pericondrio estudio experimental

    OpenAIRE

    Ballesteros Vazquez, P.; Carranza Bencano, Andrés; Armas Padrón, J. R.; Saenz López de Rueda, F.

    1994-01-01

    Ante la incapacidad de regeneración espontánea de lesiones profundas y amplias del cartílago articular, estudiamos la reparación cartilaginosa con plastias de pericondrio tomadas de la región condro-costal e implantándolas con su cara condrogénica sobre una lesión osteocondral realizada en la superficie articular rotuliana. Macroscópica e histológicamente, a la octava semana, el neocartílago formado tenía igual apariencia que el cartílago hialino normal, no existiendo separació...

  3. A clinicopathological study of dyspeptic subjects in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Ladi Hameed

    2012-05-01

    Full Text Available The clinicopathological and endoscopic features of dyspepsia have not been well studied in Nigeria due to the high cost of gastroscopes and lack of the relevant expertise. This study was designed to highlight these features and possible risk factors. This prospective study was conducted on adult dyspeptic patients who fulfilled the study criteria from November 2007 to December 2008 at a University hospital in Lagos, Nigeria. Demographic and clinical presentation including possible risk factors were obtained through a questionnaire administered by an interviewer followed by an upper gastrointestinal endoscopy and gastric biopsy. Of the 123 subjects who took part in the study, 100 gave their consent to an upper gastrointestinal endoscopy and biopsy. The male:female ratio was 1:1, mean age was 44.98 (SD 15.4 years and the modal age group was 38-47years. The prevalence of dyspepsia was 29% and epigastric pain was the most common presentation. Endoscopic findings were superficial mucosal lesion (21%, peptic ulcer (16%, features of gastroesophageal reflux disease (10%, and gastric cancer (2%, as well normal findings (44%. Non-steroidal antiinflammatory drug (NSAID use as a risk factor had a significant association with positive endoscopic findings; relative risk for development of positive endoscopic findings was 1.5% (P =0.03. Histology showed rates of chronic gastritis to be 91% and normal values 9%. The most common type of gastritis was the non-specific form (59.3%, followed by H. Pylori-associated gastritis (36.3%. The topography of gastritis was mainly pangastritis (68.1% and antral predominant in 23.1%. The prevalence of H. pylori by histology was 41%. The presence of H. pylori was not associated with severity, location or duration of symptoms. H. pylori was, however, found to be a significant contributor to the development of positive endoscopic findings (P=0.01; OR 2.92 95% CI 1.50-3.17. Alarm symptoms were found to be important markers of

  4. Diverticular disease at colonoscopy in Lagos State, Nigeria.

    Science.gov (United States)

    Oluyemi, Aderemi; Odeghe, Emuobor

    2016-01-01

    The upsurge in the reported cases of diverticular disease (DD) has led to a re-appraisal of the earlier held views that it was a rare entity in Nigeria. The advent of colonoscopy has contributed in no small way to this change. We sought to determine the clinical characteristics, indications for colonoscopy, and intra-procedural findings among these patients. A retrospective cross-sectional study was carried out on the colonoscopy records from four private endoscopy units based in Lagos State, Nigeria. The records were drawn from a 5-year period (August 2010 to July 2015). The endoscopy logs and reports were reviewed, and the bio data, indications, and colonoscopy findings were gleaned. A total of 265 colonoscopies were carried out in the stated period. Of these, 28 (10.6%) had DD. Of the patients with DD, 5 (17.9%) were females while 23 (82.1%) were males. Their ages ranged from 46 to 94 years (mean = 68.2 ± 11 years). Fifteen patients had been referred for the procedure on account of hematochezia alone (15 = 53.6%). Other reasons for referral included abdominal pain alone (2 = 7%), hematochezia plus abdominal pain (5 = 17.9%), and change in bowel habits (3 = 10.8%). Ten (35%) patients had pan-colonic involvement. Regional disease involved the right side alone in only one case (3.5%) while the other combinations of sites are as follows; 6 (21.4%) in the sigmoid colon alone, 2 (7%) in the descending colon alone, 5 (17.9%) in the sigmoid-descending colon, 4 (14.3%) in the sigmoid-descending-transverse colon, thus the sigmoid colon was involved in 25 (89.3%) cases. Five cases (17.9%) had endoscopic features suggestive of diverticulitis. DD should no longer be regarded as a rare problem in the Nigerian patient. The study findings support the notion of higher prevalence among the elderly, in males, and of sigmoid colon involvement.

  5. Stakeholders views on why child overweight and obesity is rising in Lagos, Nigeria: A qualitative study

    Directory of Open Access Journals (Sweden)

    Adeteju A Adedini

    2016-01-01

    Full Text Available Background and Objective: According to the World Health Organization, the number of obese children would increase to 70 million by 2025 if no intervention is made. An increase in the prevalence of overweight and obesity among school children in Lagos State, Nigeria has been established, but specific factors promoting its prevalence are unknown. The aim of this study was to elicit the views of stakeholders on the perceived causes for the rise in child overweight and obesity. Methods: Five focus group discussions were conducted with different groups of stakeholders involved in child care, namely: Parents, teachers, and healthcare givers. Participants were recruited using a purposive sampling method; a structured question guide was employed for the discussion sessions. The discussions were recorded, collated, and analyzed using grounded theory to extract themes. Results: Six themes emerged as factors responsible for the rise, of which civilization and lifestyle imbalance of the populace emerged as the prominent cause. Of the fifty respondents, 76% of respondents identified parents (particularly young mothers as major contributors to the prevalence of overweight and obesity in children of Lagos State; and 52.3% of the participants reported that a direct relationship exists between income class of parent and weight of a child resident in Lagos. Conclusion: Civilization and lifestyle imbalance, insecurity and congestion, low level of public awareness, inadequate educative and enlightenment programs, myths and societal perception were factors identified to responsible for the rise in the prevalence of child obesity in Lagos, Nigeria. Preventive strategies to control the prevalence of overweight and obesity in children residing in Lagos State should be considered for further studies.

  6. The realities of Lagos urban development vision on livelihoods of the urban poor

    Directory of Open Access Journals (Sweden)

    Oluwafemi Ayodeji Olajide

    2018-04-01

    Full Text Available Similar to many other cities in sub-Saharan African countries, the struggle between urban development policies and the livelihoods of the urban poor is one of the urban development challenges facing Lagos. This paper examines the realities of the Lagos urban development policies and intiatives on the livelihoods of the urban poor. The state government embarked on series of what it calls sustainable urban transformation policies towards making Lagos ‘an African model megacity’ and a global economic and financial hub that is safe, secure, functional and productive, with a view to achieving poverty alleviation and sustainable development. This paper, through the lens of theoretical and analytical underpinnings of Sustainable Livelihoods Framework, however, argues that the actions of the state government contradict the whole essence of sustainable urban development and poverty alleviation, but reflect an agenda deliberately targeted to further impoverish the poor. While the Sustainable Livelihood was used as the theoretical and analytical framework, this paper essentially focuses on the Policies, Institutions and Processes component of the framework. This provides a unique entry point for understanding the implications of the Lagos urban development aspirations on the livelihoods of the urban poor. The research uses mixed methods research design with a broad range of data-collection methods, including household surveys, interviews, direct observation and photography, documentary review and policy document analysis. The study reveals that there is a disconnection between urban development policies and realities of the poor. The implementation of urban development projects and policies works against the urban poor and resulted in more hardship, through reduction in livelihood opportunities or complete loss of livelihoods. This study, therefore, suggests that one important element in reducing poverty in Lagos’ informal settlements is a policy

  7. Assessing the deep drilling potential of Lago de Tota, Colombia, with a seismic survey

    Science.gov (United States)

    Bird, B. W.; Wattrus, N. J.; Fonseca, H.; Velasco, F.; Escobar, J.

    2015-12-01

    Reconciling orbital-scale patterns of inter-hemispheric South American climate during the Quaternary requires continuous, high-resolution paleoclimate records that span multiple glacial cycles from both hemispheres. Southern Andean Quaternary climates are represented by multi-proxy results from Lake Titicaca (Peru-Bolivia) spanning the last 400 ka and by pending results from the Lago Junin Drilling Project (Peru). Although Northern Andean sediment records spanning the last few million years have been retrieved from the Bogota and Fúquene Basins in the Eastern Cordillera of the Colombian Andes, climatic reconstructions based on these cores have thus far been limited to pollen-based investigations. When viewed together with the Southern Hemisphere results, these records suggest an anti-phased hemispheric climatic response during glacial cycles. In order to better assess orbital-scale climate responses, however, independent temperature and hydroclimate proxies from the Northern Hemisphere are needed in addition to vegetation histories. As part of this objective, an effort is underway to develop a paleoclimate record from Lago de Tota (3030 m asl), the largest lake in Colombia and the third largest lake in the Andes. One of 17 highland tectonic basins in Eastern Cordillera, Lago de Tota formed during Tertiary uplift that deformed pre-foreland megasequences, synrift and back-arc megasequences. The precise age and thickness of sediments in the Lago de Tota basin has not previously been established. Here, we present results from a recent single-channel seismic reflection survey collected with a small (5 cubic inch) air gun and high-resolution CHIRP sub-bottom data. With these data, we examine the depositional history and sequence stratigraphy of Lago de Tota and assess its potential as a deep drilling target.

  8. Sedimentation survey of Lago Cerrillos, Ponce, Puerto Rico, April-May 2008

    Science.gov (United States)

    Soler-López, Luis R.

    2011-01-01

    Lago Cerrillos dam, located in the municipality of Ponce in southern Puerto Rico, was constructed in 1991 as part of the multipurpose Rio Portugues and Bucana Project. This project provides flood protection, water supply, and recreation facilities for the municipio of Ponce. The reservoir had an original storage capacity of 38.03 million cubic meters at maximum conservation pool elevation of 174.65 meters above mean sea level and a drainage area of 45.32 square kilometers. Sedimentation in Lago Cerrillos reservoir has reduced the storage capacity from 38.03 million cubic meters in 1991 to 37.26 million cubic meters in 2008, which represents a total storage loss of about 2 percent. During July 29 to August 23, 2002, 8,492 cubic meters of sediment were removed from the Rio Cerrillos mouth of the reservoir. Taking into account this removed material, the total water-storage loss as of 2008 is 778,492 cubic meters, and the long-term annual water-storage capacity loss rate is about 45,794 cubic meters per year or about 0.12 percent per year. The Lago Cerrillos net sediment-contributing drainage area has an average sediment yield of about 1,069 cubic meters per square kilometer per year. Sediment accumulation in Lago Cerrillos is not uniformly distributed and averages about 3 meters in thickness. This represents a sediment deposition rate of about 18 centimeters per year. On the basis of the 2008 reservoir storage capacity of 37.26 million cubic meters per year and a long-term sedimentation rate of 45,794 cubic meters per year, Lago Cerrillos is estimated to have a useful life of about 814 years or until the year 2822.

  9. Mothers' human papilloma virus knowledge and willingness to vaccinate their adolescent daughters in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Ezenwa BN

    2013-07-01

    Full Text Available Beatrice N Ezenwa,1 Mobolanle R Balogun,2 Ifeoma P Okafor2 1Department of Pediatrics, 68 Nigerian Army Reference Hospital, Lagos State, Nigeria; 2Department of Community Health and Primary Care, College of Medicine, University of Lagos, Lagos State, Nigeria Introduction: Human papillomavirus (HPV is one of the most common sexually transmitted infections in sexually active adolescents and young women and has been implicated as a cause of the majority of cases of cervical cancer, which is the second most common cancer in women in Nigeria. HPV is preventable with the use of HPV vaccines. Objectives: The objective of this study was to assess mothers' HPV knowledge and their willingness to vaccinate their adolescent daughters in Lagos, Nigeria. Materials and methods: This study was a community-based, descriptive cross-sectional study carried out in July, 2012 in Shomolu Local Government Area (LGA of Lagos State, Nigeria. Multistage sampling method was employed to select the 290 respondents who participated in the study. Structured, pretested, interviewer-administered questionnaires were used for data collection. Data was analyzed with Epi-Info™ version 7. Results: The study revealed low awareness of HPV (27.9% and HPV vaccines (19.7% among the mothers that participated. There was a high awareness for cervical cancer but little knowledge of its link to HPV. Awareness and utilization of HPV vaccines increased with increasing educational level (P<0.05. There was a high willingness and intention among the mothers to vaccinate their girls (88.9% and to recommend the vaccine to others (91.0%. Accessibility and affordability of the HPV vaccines were found to be possible barriers to future utilization of the vaccines. Conclusion: Despite low knowledge about HPV and HPV vaccines, mothers were willing to vaccinate their daughters. We recommend improving mothers' knowledge by education and the possible inclusion of the vaccine in the national immunization

  10. The Effect of Manpower Planning and Development in Lagos State (Nigeria Civil Service Performance

    Directory of Open Access Journals (Sweden)

    Chinyeaka J. Igbokwe-Ibeto

    2015-12-01

    Full Text Available The study examined effects of manpower planning and development in Lagos state civil service performance. Lagos state civil service is the greatest asset of the state in its quest for socio-economic development. The primary question that was explored is whether the nature of manpower planning and development curriculum in Lagos state civil service has effect on the service performance and the attainment of state objective. The study relied on primary and secondary data, and multiple stage sampling technique was used to select the sample population. The data collected was presented in frequency bar chart and simple percentage. Pearson’s Product Moment Correlation Coefficient (PPMC statistical tool was used to test the hypotheses. Findings of the study show that the nature of manpower planning and development curriculum has a positive effect on the Lagos state civil performance. It also reveals that the manpower planning and development has a positive effect on the attainment of Lagos state objective. To achieve better performance in the service, it should among others, improve on the current manpower planning strategy and continue to update its manpower development curriculum in line with the global best practices. Given the pivotal role that technology plays in the 21st century, the service should avail itself the windows of opportunities that information technology provides in its drive to enhance employees’ skills, knowledge and abilities that will invariably improve the service performance. Yet, the service should imbibe the prescripts of New PublicManagement theory (NPM, and that goals and targets should be defined and measurable as indicators of organizational performance.

  11. Ostrácodos no-marinos de lagos en el altiplano este-centro de México

    Directory of Open Access Journals (Sweden)

    Liseth Pérez

    2015-06-01

    Full Text Available La fauna de ostrácodos de la zona de transición néartica-neotropical ha sido poco estudiada hasta este estudio. En el este-centro de México, habitan diez especies de ostrácodos en diez lagos: cinco lagos maar (originados por explosiones freáticas/freato-magmáticas, un lago volcánico-tectónico, tres embalses naturales y un embalse artificial. De la parte más profunda y de las zonas litorales de todos los lagos estudiados se recolectaron sedimentos superficiales para el análisis de ostrácodos. También se midieron in situ las variables ambientales: pH, temperatura, oxígeno disuelto, conductividad, SDT, además se recolectaron muestras de agua paralelas para análisis químico con el objetivo de describir el hábitat. Especies con una amplia distribución en el área de estudio (≥5 lagos incluyen: Cypridopsis vidua, Darwinula stevensoni y Eucandona cf. patzcuaro. Limnocytherina axalapasco es una especie endémica y fue recolectada en tres lagos maar y en el embalse artificial. Especies raras incluyeron: Chlamydotheca arcuata?, Fabaeformiscandona acuminata?, Ilyocypris gibba?, Limnocythere friabilis?, Potamocypris smaragdina? y Potamocypris unicaudata? La riqueza de especies más alta (6 spp. se encontró en el lago más extenso y somero, lago Metztitlán (2.6km², 5.5m de profundidad, con el tipo de agua HCO3->>SO4²->Cl--- Ca2+>Na+>Mg2+. El resto de lagos estudiados (<63m, <27km² presentaron no más de tres especies. Por ejemplo, solamente dos especies de ostrácodos fueron recolectadas en el lago Alchichica, el cual es el más extenso, profundo y salino entre los lagos maar estudiados.

  12. Dam failure analysis for the Lago El Guineo Dam, Orocovis, Puerto Rico

    Science.gov (United States)

    Gómez-Fragoso, Julieta; Heriberto Torres-Sierra,

    2016-08-09

    The U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, completed hydrologic and hydraulic analyses to assess the potential hazard to human life and property associated with the hypothetical failure of the Lago El Guineo Dam. The Lago El Guineo Dam is within the headwaters of the Río Grande de Manatí and impounds a drainage area of about 4.25 square kilometers.The hydrologic assessment was designed to determine the outflow hydrographs and peak discharges for Lago El Guineo and other subbasins in the Río Grande de Manatí hydrographic basin for three extreme rainfall events: (1) a 6-hour probable maximum precipitation event, (2) a 24-hour probable maximum precipitation event, and (3) a 24-hour, 100-year recurrence rainfall event. The hydraulic study simulated a dam failure of Lago El Guineo Dam using flood hydrographs generated from the hydrologic study. The simulated dam failure generated a hydrograph that was routed downstream from Lago El Guineo Dam through the lower reaches of the Río Toro Negro and the Río Grande de Manatí to determine water-surface profiles developed from the event-based hydrologic scenarios and “sunny day” conditions. The Hydrologic Engineering Center’s Hydrologic Modeling System (HEC–HMS) and Hydrologic Engineering Center’s River Analysis System (HEC–RAS) computer programs, developed by the U.S. Army Corps of Engineers, were used for the hydrologic and hydraulic modeling, respectively. The flow routing in the hydraulic analyses was completed using the unsteady flow module available in the HEC–RAS model.Above the Lago El Guineo Dam, the simulated inflow peak discharges from HEC–HMS resulted in about 550 and 414 cubic meters per second for the 6- and 24-hour probable maximum precipitation events, respectively. The 24-hour, 100-year recurrence storm simulation resulted in a peak discharge of about 216 cubic meters per second. For the hydrologic analysis, no dam failure conditions are

  13. Well-Being of Lagos Urban Mini-Bus Drivers: The Influence of Age and Marital Status

    OpenAIRE

    Bolajoko I. Malomo; Maryam O. Yusuf

    2015-01-01

    Lagos urban mini bus drivers play a critical role in the transportation sector. The current major mode of transportation within Lagos metropolis remains road transportation and this confirms the relevance of urban mini-bus drivers in transporting the populace to their various destinations. Other modes of transportation such as the train and waterways are currently inadequate. Various threats to the well-being of urban bus drivers include congested traffic typical of moder...

  14. Modelamiento y simulación para analizar la contaminación del lago Titicaca aplicando lógica difusa

    OpenAIRE

    Benites Noriega, Juan

    2007-01-01

    El trabajo de investigación titulado "MODELAMIENTO Y SIMULACIÓN PARA ANALIZAR LA CONTAMINACIÓN DEL LAGO TITICACA, APLICANDO LÓGICA DIFUSA", se ha realizado en la ciudad de Puno con la finalidad de modelar y analizar la contaminación del Lago Titicaca, aplicando la lógica difusa para la conservación del medio ambiente y la sociedad; localizar las fuentes generadoras de la contaminación del Lago Titicaca, y mencionar como afecta la contaminación del Lago Titicaca en la salud de los habitantes q...

  15. Efecto de la impermeabilidad del Mucílago de Nopal en bloques de tierra comprimidos

    Directory of Open Access Journals (Sweden)

    Yolanda Guadalupe Aranda Jiménez

    2013-01-01

    Full Text Available La arquitectura de tierra1 es conocida desde hace siglos, sin embargo, actualmente es poco utilizada comparado con los sistemas constructivos comunes. Los bloques de tierra comprimido (BTC son elementos constructivos con un potencial elevado para ser utilizado en las construcciones de vivienda en México, principalmente por su similitud con los bloques tradicionales, siendo conveniente mejorar sus características a partir de un estabilizante. Se realizó el estudio de BTC estabilizados con cemento y una sustancia proveniente de las pencas maduras de nopal. Se encontró que al añadir mucílago de nopal se observa un incremento significativo de la resistencia a la compresión húmeda y seca, lo cual estar relacionado con una disminución de la porosidad; se ofrecen algunas relaciones del efecto del mucílago en el sólido analizado.

  16. Murciélagos asociados a una finca ganadera en Córdoba (Colombia

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    Berta Calonge C

    2010-04-01

    Full Text Available Objetivo. Conocer las especies de murciélagos asociadas a remanentes de bosque seco tropical en un sistema de ganadería extensiva en una finca del departamento de Córdoba. Materiales y métodos. Se realizó un muestreo de 35 noches, durante la época seca (enero-marzo de 2009, empleando 10 redes de niebla (3x6 m ubicadas en un diseño por conglomerados las cuales fueron abiertas desde las 18:00 hasta las 06:00 horas. Resultados. Se encontraron 20 especies de murciélagos, se capturaron un total de 614 individuos. Conclusiones. Se encontraron especies de las familias Phyllostomidae, Noctilionidae, Vespertilionidae y Emballonuridae. La especie Lasiurus ega se constituye en un nuevo reporte para el departamento de Córdoba.

  17. growth pattern and the industrial development of the lagos region, nigeria

    Directory of Open Access Journals (Sweden)

    Dickson Dare Ajayi

    2013-07-01

    Full Text Available This paper examines the nature, growth and spatial pattern of industries within the Lagos Region. Industrial activities in this region grew progressively over the year from mere brickwork, palm oil mills, printing press, soap factory, and metal container factory to capital intensive manufacturing. Indeed, the number of industrial establishments increased from 122 in 1962 to 637 in 1993. Lagos developed into Nigeria's leading industrial center; especially following the expansion in its service and administrative sectors. Whereas, chemicals and pharmaceutical; and basic metal, iron and steel and fabricated metal products industry groups dominate in industrial scene, wood and wood products (including furniture; and non-metallic mineral products are rare. The spatial pattern shows that industrial establishments vary amongst the industrial estates/areas, and also among the industry groups. Ikeja/Ogballsheri industrial estate/area dominates the industrial scene.

  18. Travel Characteristics and Commuting Pattern of Lagos Metropolis Residents: an Assessment

    Directory of Open Access Journals (Sweden)

    OSOBA, Samson Babatunde

    2015-06-01

    Full Text Available Urban travel is not solely the function of travel, but also on people’s participation in activities and how these were done. This study utilized 2,500 households’ samples in Lagos metropolis. The questionnaire about intra-city trip patterns was administered in direct proportion to the population size of each Local Government Areas (LGAs. Systematic sampling technique was used to select every tenth building on the identified streets. lt is observed that more than 95% of residents depends on roads, while less than 5% depends on Rail and Ferry. Work and business trips characterized the weekdays, while social, shopping and recreation trips dominate the weekends. This situation leads to too many vehicular traffic on the roads during the peak periods, leading to congestion and loss of valuable man-hours. Transportation planners in Lagos need to develop alternative intra-city transportation systems.

  19. Subordinación local al manejo territorial globalizado de la ribera del lago de Chapala

    OpenAIRE

    Adriana Hernández

    2017-01-01

    El presente artículo aborda el proceso de reapropiación del lago de Chapala, México. En las últimas décadas se han venido transformando el suelo y la producción agrícola en los municipios ribereños del lago de Chapala debido a la introducción de cultivos de exportación mediante sistemas modernos de producción tecnificada. Por lo que los cultivos tradicionales han ido disminuyendo o se producen con mayor uso de pesticidas, fertilizantes y agroquímicos. El papel del campesino ribereño también s...

  20. An Audit of Anaesthesia Record-keeping at the Lagos University ...

    African Journals Online (AJOL)

    An Audit of Anaesthesia Record-keeping at the Lagos University Teaching Hospital. ... in the re-audit were Pre-operative history (51% to 91% p<0.0001), blood pressure (65% to 78% p=0.04), pulse rate (47% to 65% p=0.015), administration of premedication (30% to 63% p<0.001), and ASA score (60% to 78%, p=0.009).

  1. Evaluation of Railway Level Crossing Attributes on Accident Causation in Lagos, Nigeria.

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    Adeolu O Dina

    2017-01-01

    Full Text Available Abstract The study examines the contribution of Railway Level Crossing (RLCphysical attributes to accident occurrence using the12 major level crossings within the Lagos metropolis. The 48km single track mainline section under consideration which barely make up 1.1% of the entire narrow gauge track network of the country within a 5 year period contributed about 45% of the total National crossing accidents recorded in Nigeria. The method of investigation involved recording the individual attributes of each RLC such asgates, pedestrian traffic, car traffic light, proximity of signage to crossing, vehicular traffic as dummy variables.The regression analysis  was used to measure their effect on accidents.The result indicates gates, pedestrians and the location of signage had significant impact on accidents occurrence at level crossings within Lagos metropolis. Based on the findings, enhancement of active warning systems among other recommendations was suggested as potent counter measures for RLC accident reduction. Abstrak Penelitian menguji tingkat kontribusi atribut fisik dari perlintasan jalan kereta api terhadap kejadian kecelakaan menggunakan 12 perlintasan utama dalam kota metropolis Lagos. 48 km jalan utama tunggal menjadi pertimbangan yang hampir meningkat 1.1% dari seluruh trek sempit jaringan negara dalam jangka waktu 5 tahun menyumbang sekitar 45% dari total kecelakaan perlintasan secara Nasional di Nigeria. Metode penelitian melibatkan catatan dari masing-masing atribut RLC seperti pintu gerbang, pejalan kaki, lampu lalu lintas mobil, kedekatan tanda penyebarangan, lalu lintas kendaraan sebagai variabel dumi. Analisis regresi digunakan untuk mengukur pengaruh dari atribut terhadap kecelakaan. Hasilnya menunjukkan pintu gerbang, pejalan kaki, dan lokasi tanda perlintasan mempunyai dampak signifikan pada kecelakaan dalam kota metropolis Lagos.Berdasarkan penemuan tersebut, perbaikan dari sistem peringatan aktif disarankan sebagai upaya

  2. Malarone treatment failure and in vitro confirmation of resistance of Plasmodium falciparum isolate from Lagos, Nigeria

    OpenAIRE

    Fivelman, Quinton L; Butcher, Geoffrey A; Adagu, Ipemida S; Warhurst, David C; Pasvol, Geoffrey

    2002-01-01

    Abstract We report the first in vitro and genetic confirmation of Malarone® (GlaxoSmithKline; atovaquone and proguanil hydrochloride) resistance in Plasmodium falciparum acquired in Africa. On presenting with malaria two weeks after returning from a 4-week visit to Lagos, Nigeria without prophylaxis, a male patient was given a standard 3-day treatment course of Malarone®. Twenty-eight days later the parasitaemia recrudesced. Parasites were cultured from the blood and the isolate (NGATV01) was...

  3. Investigating last mile distribution challenges of wine suppliers in Lagos, Nigeria

    OpenAIRE

    2014-01-01

    M.Com. (Business Management) The last mile distribution is the final link of successful supply chain operations. The high demand for products, lead time uncertainties and replenishment time complicate the distribution task. In order to achieve a competitive business edge, suppliers need to work at developing and improving their last mile distribution link. The aim of this study was to investigate the effectiveness of the last mile wine distribution in Lagos Island, Nigeria, and to determin...

  4. Population dynamics and ecology of Tilapia rendalli in Lago Sauce (Peru)

    Energy Technology Data Exchange (ETDEWEB)

    Wosnitza-Mendo, C.

    1980-01-01

    This is a practical contribution to development aid in Peru. It was to provide a basis for farming of Lago Sauce and similar lakes and introduce young Peruvian fishery biologists to practical and theoretical work with populations of freshwater fish. Various methods of biomass determination have been compared in order to find out why only small specimens of Tilapia rendalli have been caught and what ichthyobiomass was in the lake.

  5. Knowledge, attitude and practice towards child adoption amongst women attending infertility clinics in Lagos State, Nigeria

    Directory of Open Access Journals (Sweden)

    Adenike O. Omosun

    2011-10-01

    Full Text Available Background: Child adoption is a recommended alternative form of infertility management. Infertility is of public health importance in Nigeria and many other developing nations. This is a result of its high prevalence and especially because of its serious social implications as the African society places a passionate premium on procreation in any family setting. Objectives: The aim of this study was to determine the knowledge, attitude and practice of child adoption amongst women attending infertility clinics in teaching hospitals in Lagos State and to determine the factors that influence their attitude and practice towards it. Method: A cross-sectional descriptive design was used. Data were collected by using a structured questionnaire which was interviewer-administered. The study was conducted in the two teaching hospitals in Lagos State (LUTH [Lagos University Teaching Hospital] and LASUTH [Lagos State University Teaching Hospital] from amongst 350 women attending the gynaecological clinics. All the patients under management for infertility at the gynaecology clinics during the period of the study were interviewed. Results: Many respondents (85.7% had heard of child adoption and 59.3% of them knew the correct meaning of the term. More than half of the respondents (68.3% said that they could love an adopted child but less than half of them (33.7% were willing to consider adoption. Only 13.9% has ever adopted a child. The major reason given for their unwillingness to adopt was their desire to have their own biological child. Factors that were favourable towards child adoption were Igbo tribe identity, an age above 40 years, duration of infertility above 15 years, and knowing the correct meaning of child adoption. Conclusion: There is a poor attitude to adoption even amongst infertile couples. Interventions need to be implemented to educate the public on child adoption, to improve their attitude towards adoption and to make it more acceptable.

  6. Murciélagos hematófagos como reservorios de la rabia

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    Karin Corrêa Scheffer

    Full Text Available La rabia continua siendo un desafío para las autoridades de salud pública y una limitante para la industria ganadera en América Latina. Caninos silvestres y domésticos, así como murciélagos hematófagos son las principales especies transmisoras y reservorios de la enfermedad. Actualmente, se observa variaciones en el perfil epidemiológico de la rabia, donde la especie de murciélago hematófago Desmodus rotundus se constituye en la principal especie transmisora. A lo largo del tiempo se ha acumulado conocimiento sobre la ecología, biología y comportamiento de esta especie y sobre la historia natural de la rabia, lo cual debe conducir a una continua evolución de los métodos de control poblacional de D. rotundus, prevención y técnicas de diagnóstico. Aún se desconoce la relación ecológica de esta especie con otras hematófagas y no hematófagas, y queda mucho por mejorar en los sistemas de notificación y vigilancia epidemiológica, así como crear una mayor conciencia entre los ganaderos ante el tema. La comprensión del impacto que las modificaciones ambientales inducidas por el hombre ejercen sobre la dinámica de infección del virus de la rabia en los murciélagos debe ser motivo de investigaciones posteriores. Esto requerirá la combinación de estudios de campo con modelos matemáticos y nuevas herramientas diagnósticas. La presente revisión pretende presentar los aspectos más relevantes sobre el rol de los murciélagos hematófagos como reservorios y transmisores del virus de la rabia

  7. Consumers’Willingness to Pay for Safety Attributes of Bread in Lagos Metropolis, Nigeria

    OpenAIRE

    Anyam, Osemeke E.; Fashogbon, Ayodele E.; Oni, Omobowale A.

    2013-01-01

    This study examined consumer’s willingness to pay for food safety attributes in bread in Lagos metropolis. It empirically analyzed the factors driving willingness to pay for improved bread and the effect of attributes on willingness to pay and mean willingness to pay for improved bread. The data for the study using a well-structured questionnaire containing Choice Experiment (CE) questions for eliciting willingness to pay was collected from 150 respondents using a two-stage random sampling te...

  8. Calidad del agua y sedimento en el lago de Maracaibo, estado Zulia

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    Giovany José-Bracho

    2016-03-01

    Full Text Available Se analizó el agua y el sedimento del lago de Maracaibo en seis estaciones de muestreo distribuidas de norte a sur del lago. Los parámetros físicoquímicos y ambientales fueron determinados y establecidas las relaciones entre estos y las áreas afectadas por descargas de aguas residuales, depósitos de basura, residuos industriales líquidos y sólidos, actividad petrolera y agrícola y materiales orgánicos acarreados por ríos y drenajes pluviales. Se evidenció la contaminación por incremento de utrientes(nitrógeno y fósforo en las zonas influenciadas por los ríos y vertederos de agua residual y se validó la presencia de una cuña salina por la penetración al lago de las aguas del golfo de Venezuela. Las concentraciones de metalespesados están por debajo de los límites permisibles para el agua; en los sedimentos es muy heterogénea.

  9. Lago artificial de Martiánez Canarias – España

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    Amigó, Juan A.

    1980-06-01

    Full Text Available In this article a technical description is given of the works of the Artificial Lake of Martiánez. This work that was executed after gaining some 33,000 m2 from the sea mainly consisted of creating a small artificial lake of seawater surrounded by solariums, beaches and gardens. Inside the lake — that has an area of some 15,000 m2 — five natural islands were formed, most of which have tourist complexes built on them, consisting of: night club, restaurants, bars, terraces, etc.

    En este artículo se hace una descripción técnica de las obras del Lago Artificial de Martiánez. Esta obra, realizada tras ganar al mar unos 33.000 m2 consistió, principalmente, en la creación de un pequeño lago artificial de agua de mar rodeado de solarios, playas y jardines. En el interior del lago —cuya superficie es de unos 15.000 m2— se formaron cinco islas naturales, en la mayor de las cuales se construyó un complejo turístico que consta de: sala de fiestas, restaurantes, bares, terrazas, etc.

  10. The data acquisition system of the Latin American Giant Observatory (LAGO)

    Science.gov (United States)

    Sofo Haro, M.; Arnaldi, L. H.; Alvarez, W.; Alvarez, C.; Araujo, C.; Areso, O.; Arnaldi, H.; Asorey, H.; Audelo, M.; Barros, H.; Bertou, X.; Bonnett, M.; Calderon, R.; Calderon, M.; Campos-Fauth, A.; Carramiñana, A.; Carrasco, E.; Carrera, E.; Cazar, D.; Cifuentes, E.; Cogollo, D.; Conde, R.; Cotzomi, J.; Dasso, S.; De Castro, A.; De La Torre, J.; De León, R.; Estupiñan, A.; Galindo, A.; Garcia, L.; Gómez Berisso, M.; González, M.; Guevara, W.; Gulisano, A. M.; Hernández, H.; Jaimes, A.; López, J.; Mantilla, C.; Martín, R.; Martinez-Mendez, A.; Martínez, O.; Martins, E.; Masías-Meza, J. J.; Mayo-García, R.; Melo, T.; Mendoza, J.; Miranda, P.; Montes, E.; Morales, E.; Morales, I.; Moreno, E.; Murrugarra, C.; Nina, C.; Núñez, L. A.; Núñez-Castiñeyra, A.; Otiniano, L.; Peña-Rodríguez, J.; Perenguez, J.; Pérez, H.; Perez, Y.; Perez, G.; Pinilla-Velandia, S.; Ponce, E.; Quishpe, R.; Quispe, F.; Reyes, K.; Rivera, H.; Rodriguez, J.; Rodríguez-Pascual, M.; Romero, M.; Rubio-Montero, A. J.; Salazar, H.; Salinas, J.; Sarmiento-Cano, C.; Sidelnik, I.; Haro, M. Sofo; Suárez-Durán, M.; Subieta, M.; Tello, J.; Ticona, R.; Torres, I.; Torres-Niño, L.; Truyenque, J.; Valencia-Otero, M.; Vargas, S.; Vásquez, N.; Villasenor, L.; Zamalloa, M.; Zavala, L.

    2016-06-01

    LAGO is an extended cosmic ray observatory composed of water-Cherenkov detectors (WCD) placed throughout Latin America. It is dedicated to the study of various issues related to astrophysics, space weather and atmospheric physics at the regional scale. In this paper we present the design and implementation of the front-end electronics and the data acquisition system for readout of the WCDs of LAGO. The system consists of preamplifiers and a digital board sending data to a computer via an USB interface. The analog signals are acquired from three independent channels at a maximum rate of ~1.2×105 pulses per second and a sampling rate of 40 MHz. To avoid false trigger due to baseline fluctuations, we present in this work a baseline correction algorithm that makes it possible to use WCDs to study variations of the environmental radiation. A data logging software has been designed to format the received data. It also enables an easy access to the data for an off-line analysis, together with the operational conditions and environmental information. The system is currently used at different sites of LAGO.

  11. The data acquisition system of the Latin American Giant Observatory (LAGO)

    International Nuclear Information System (INIS)

    Sofo Haro, M.; Arnaldi, L.H.

    2016-01-01

    LAGO is an extended cosmic ray observatory composed of water-Cherenkov detectors (WCD) placed throughout Latin America. It is dedicated to the study of various issues related to astrophysics, space weather and atmospheric physics at the regional scale. In this paper we present the design and implementation of the front-end electronics and the data acquisition system for readout of the WCDs of LAGO. The system consists of preamplifiers and a digital board sending data to a computer via an USB interface. The analog signals are acquired from three independent channels at a maximum rate of ~1.2×10"5 pulses per second and a sampling rate of 40 MHz. To avoid false trigger due to baseline fluctuations, we present in this work a baseline correction algorithm that makes it possible to use WCDs to study variations of the environmental radiation. A data logging software has been designed to format the received data. It also enables an easy access to the data for an off-line analysis, together with the operational conditions and environmental information. The system is currently used at different sites of LAGO.

  12. Analysis of Solid Waste Management Logistics and Its Attendant Challenges in Lagos Metropolis

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    Boye Benedict Ayantoyinbo

    2018-06-01

    Full Text Available This study examined the relationship between waste management logistics and identified metrics for waste management logistics performance. Secondly, the study assessed the various challenges inhibiting the performance of LAWMA in the State. Random table sampling and purposive sampling were used to select 47 waste collection centres with 10 questionnaires distributed per centre (470 in total across the 20 Local Government Areas (LGA in Lagos State. However, only 339 questionnaires were retrieved from the sampled population. Multiple regression analysis was used to predict the relationship between waste management logistics and identified metrics for waste logistics performance. Descriptive statistics was used to explain the challenges of the Lagos State Waste Management Authority (LAWMA. The results established that the volume of solid waste and commitment of staff are crucial to waste management logistics and one factor that strongly affects waste logistics is traffic in the metropolis. Conclusively, waste collection turnaround must be increased and government and private investors should provide enabling infrastructure and trained personnel for effective solid waste management in Lagos metropolis.

  13. Factors Influencing the Usage of Compact Fluorescent Lamps in Existing Residential Buildings in Lagos, Nigeria

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    Olusola Olugbemileke Johnson

    2012-01-01

    Full Text Available Nigeria as a developing nation is facing increasing demand for electricity especially in the residential areas. The use of compact fluorescent lamps (CFLs is one of the several measures towards reducing the demand. However, in Nigeria, the use of CFLs is low. The present study was designed to investigate some factors responsible for the low usage of CFLs in Lagos, Nigeria. Questionnaires were administered by hand on 984 households, selected through systematic random sampling techniques from 5 local government areas in Lagos State. The first building along the major street in each of the local government was selected randomly and every tenth building constituted the sample. A household head was surveyed in each of the building selected, and was asked to rate some factors that might have influenced the usage of CFLs. The data generated from the questionnaire were analysed using ranking method. The findings show that inability to measure the saving benefits of CFLs on electricity bills, lack of affordability and high initial cost of acquisition and installation were the most important factors which influence the use of the CFLs. The study concludes by providing some recommendations on how to achieve sustainable energy management in the Lagos and beyond through more efficient residential house lighting.

  14. Transformative Empowerment in the Lagos State Civil Service: A Gender Policy Discourse

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    Felicia A.D. Oyekanmi

    2016-06-01

    Full Text Available Transformation means positive change to new values and direction. This research is concerned with the relationship between empowerment processes that are transformatory and gender equality in the workplace. Its scope includes integrating a transformatory view into women’s and men’s consciousness and autonomy over their career, education and health. This research adopted a case-study approach by using the Ministries of Education, Health, Establishment, Training and Pensions and the Civil Service Commission in Lagos State, employing a combination of qualitative and quantitative research methods as its empirical research methodology. The field work was carried out in Lagos State in the months of June and July, 2014 while the interview was in July and August, 2014. This study demonstrated that gender-blind policies disempower women and perpetuate gender inequalities in the Lagos State Civil Service. Further, it shows that the manifestation of transformatory empowerment is jeopardised by women and men's compliance with the existing expectations and inaction to bring about changes in policies and practices that are detrimental to the attainment of gender equality in the work place.

  15. Profile of medical waste management in two healthcare facilities in Lagos, Nigeria: a case study.

    Science.gov (United States)

    Idowu, Ibijoke; Alo, Babajide; Atherton, William; Al Khaddar, Rafid

    2013-05-01

    Proper management and safe disposal of medical waste (MW) is vital in the reduction of infection or illness through contact with discarded material and in the prevention of environmental contamination in hospital facilities. The management practices for MW in selected healthcare facilities in Lagos, Nigeria were assessed. The cross-sectional study involved the use of questionnaires, in-depth interviews, focused group discussions and participant observation strategies. It also involved the collection, segregation, identification and weighing of waste types from wards and units in the representative facilities in Lagos, Nigeria, for qualitative and quantitative analysis of the MW streams. The findings indicated that the selected Nigerian healthcare facilities were lacking in the adoption of sound MW management (MWM) practices. The average MW ranged from 0.01 kg/bed/day to 3.98 kg/bed/day. Moreover, about 30% of the domestic waste from the healthcare facilities consisted of MW due to inappropriate co-disposal practices. Multiple linear regression was applied to predict the volume of waste generated giving a correlation coefficient (R(2)) value of 0.99 confirming a good fit of the data. This study revealed that the current MWM practices and strategies in Lagos are weak, and suggests an urgent need for review to achieve vital reversals in the current trends.

  16. Bus Rapid Transit and Socioeconomic Condition of Bus Commuters in Lagos State

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    Owolabi L. Kuye

    2017-10-01

    Full Text Available Road transport is one of the most common means of transportation across the world. Bus transportation in Nigeria had witnessed many problems for the past decades considering the growing population with the attendant loss of lives and properties in most cities like Lagos in Nigeria. This paper focuses on the adequacy of services provided by Bus Rapid Transit (BRT in Lagos State with respect to the extent to which it influences the socioeconomic conditions of bus commuters. It examines the effect of services rendered by BRT on cost reduction potential, income and safety. Multistage sampling technique was used to select 20 samples each from all respondents in all local government area in Lagos State to reach a total of three hundred and thirty (330 samples. The data collection instrument was the questionnaire which was validated. Data collected were analysed with the use of descriptive statistics such as means, percentages and standard deviation and inferential statistics such as regression and analysis of variance techniques. Findings showed that BRT services has reduced the cost of bus commuters and also increased safety and security thereby increasing the socioeconomic condition of Lagosians. The study recommends improvements in BRT services through the deployment of technology as it had been used in developed countries.

  17. A preliminary study of medical waste management in Lagos metropolis, Nigeria

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    E. O. Longe, A. Williams

    2006-04-01

    Full Text Available A survey of medical waste management (MWM practices and their implications to health and environment was carried out in metropolitan Lagos. Lagos is currently the most populous and urbanized city in the country with an estimated population of over 13 million people. The study assessed management practices in four (2 privates and 2 publics hospitals ranging in capacity from 40 to 600 beds. Empirical data was obtained on medical waste generation, segregation, storage, collection, transportation and disposal. The observed MWM practices in all hospitals indicate absence of full compliance with the protocol for handling medical waste as stipulated in the relevant sections of the guidelines and standards for environmental pollution control in Nigeria. Three hospitals demonstrated high priority for segregation of infectious medical waste. Average generation rate of medical waste in the investigated hospitals ranged from 0.562 kg/bed.day to 0.670 kg/bed.day. Infectious waste accounts for between 26 to 37% of this volume. Only two of the hospitals investigated carry out treatment of their infectious and sharp waste types by incineration before final disposal. Burning and burial of medical waste is an unusual but common practice among the hospitals. All the hospitals employ the services of the state owned solid waste management company, the Lagos State Waste Management Authority (LAWMA for final collection, and disposal of their medical waste at government approved sites.

  18. The impact of anthropogenic pollution on limnological characteristics of a subtropical highland reservoir “Lago de Guadalupe”, Mexico

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    Sepulveda-Jauregui A.

    2013-08-01

    Full Text Available “Lago de Guadalupe” is an important freshwater ecosystem located in the northern part of the metropolitan area surrounding Mexico City, under high demographic pressure. It receives approximately 15 hm3·y-1 of untreated municipal wastewater from the surrounding municipalities. In order to develop a comparative assessment of the pollution effect over the limnological characteristics of Lago de Guadalupe, this lake was characterised from February 2006 to July 2009, and the results were compared with those obtained from a non-polluted lake “Lago el Llano” located in the same drainage area. Lago de Guadalupe was hypereutrophic with anoxic conditions throughout most of the water column. In contrast, Lago el Llano was mesotrophic with high dissolved oxygen concentrations throughout the entire water column with a clinograde profile. Both reservoirs had a monomictic mixing regime. The longitudinal zonation of physicochemical and biological variables were investigated in order to better understand the processes controlling the water quality across the reservoir during its residence time. This study shows the impact of anthropogenic pollution on the limnological characteristics of a subtropical reservoir and confirms that under adequate management schemes, namely avoiding pollution and wastewater discharges, subtropical reservoirs can be prevented from developing eutrophic conditions.

  19. Trophic development in a volcanic lake with closed hydric balance. Lake Martignano; Evoluzione trofica di un lago vulcanico a bilancio idrico chiuso. Il lago di Martignano

    Energy Technology Data Exchange (ETDEWEB)

    Falleni, F.; Bruno, M. [Istituto Superiore di Sanita' , Rome (Italy); Marchiori, E. [Istituto Sperimentale per la Zootecnia, Monterotondo, Rome (Italy); Congestri, R. [Rome Univ. Tor Vergata, Rome (Italy); Gasperi, E.; Brambullo, M. [Azienda Sanitaria Locale A, Rome (Italy); Amadeio, R. [Comune di Campagnano, Rome (Italy)

    2000-12-01

    Martignano lake is a particular charming volcanic lake in the countryside of Rome. Recently it was included in a project of Regional Wildlife Park. The lack of immissaries and emissaries, the quite long renewal time and the very short homeothermic period of two-months in a year, make the lake susceptible of trophic evolution. The comparison between the present data and those from previous studies seems to confirm such a slow development towards this way, with a nutrient level (nitrate 0.97 mg/L; total phosphorus 11.14 {mu}g/L) and chlorophyll a concentrations (10.68 {mu}g/L), typical of mesotrophic waters. The analysis of nutrient data expressed as annual mean value in percentage from the coastal stations, suggests an under lied farming influence, and points out the need to adopt fast reduction measures, to lower the phosphorus load in acceptable levels for the lake ecosystem. [Italian] Il lago di Martignano (207 m.s.l.m) e' situato nell'Italia centrale, a 35 Km a nord di Roma. I laghi di origine vulcanica rappresentano una tipologia relativamente rara rispetto all'insieme dei corpi d'acqua componenti la limnologia classica. La loro esistenza si determina in regioni con passata o attuale pronunciata attivita' tettonica. La mancanza di immissari ed emissari che caratterizza questo invaso rende particolarmente vulnerabile il suo livello trofico da parte delle contaminazioni da insediamenti urbani ed agricoli circostanti. Ai fini di valutare l'attuale velocita' di ricambio idrico del lago, il suo livello trofico e la conseguente capacita' di automantenimento di un basso livello trofico delle acque, e' stato pianificato il presente studio articolato in 13 mesi di campionamento. Si e' constatato che il valore medio annuale della clorofilla a, 10.68 {mu}g/L, mentre la presenza dei nitrati si aggira sul valore medio di 0.97 mg/L, cio' permette di ipotizzare l'origine agricola della maggior parte dei nutrienti del

  20. Pattern and outcome of cases seen at the Adult Accident and Emergency Department of the Lagos University Teaching Hospital, Idi-Araba, Lagos.

    Science.gov (United States)

    Uzoechina, N S; Abiola, A O; Akodu, B A; Mbakwem, A; Arogundade, A R; Tijani, H; Adegbesan-Omilabu, M A

    2012-01-01

    The accident and emergency department constitutes one of the vital entry points of patients into the healthcare facility of the hospital the world over. It responds to and manages variety of cases in all the clinical areas and thus pr vides an insight to the quality of care available in the health institution. The aim of this study is to determine the pattern of cases seen as well as the causes of deaths at the adult accident and emergency department of the Lagos UniversityTeaching Hospital, Idi-Araba, Lagos. Retrospective review of records of all patients attended to at the adult accident and emergency department of the Lagos University Teaching Hospital in 2009 and 2010 was carried out. Data spread sheet was used to collect data on demographic indices, diagnosis, outcome, date admitted, date discharged and amount paid from casualty attendance register and Nurses' report books. Data was collated and analysed using Epi-Info version 3.4.1 statistical software package. Out of the 5,427 available patients' records reviewed, 4,761(87.7%) were recorded as "discharged alive", 546 (10.1%) were recorded as "died", while 120 (2.2%) were recorded as "brought in dead". Of those discharged alive, male attendance was 2,376 (49.10%) while that of the female was 2,385 (50.10%). Majority of these patients were aged 20-39 years and the mean age of the patients was 39.96 +/- 18.22 yrs. Majority of cases seen were medical in origin (53.7%) and highest medical case seen was cerebrovascular accident, Commonest cause of death was from medical cases [69.2%] (cerebrovascular accident 22.0%). Male mortality was 55.3% while female mortality was 44.7%, mean age was 46.86 +/- 17.61. Most affected age group was 40 - 59 years (35.4%) and highest number of death was seen in December. The commonest case seen as well as commonest cause of death was cerebrovascular accident. A high number of heart failure, head injuries, road traffic accidents, upper gastrointestinal bleeding and post partum

  1. An Assessment of Internet Uses, Practices, and Barriers for Professional Development by Agricultural Science Teachers in Lagos State

    Directory of Open Access Journals (Sweden)

    Olatomide Waheed Olowa

    2012-01-01

    Full Text Available The paper reports a study carried out on the utilisation of the Internet by agricultural science teachers in Lagos state focusing on uses, practices, and barriers. A questionnaire was developed based on literature and was administered to 300 agricultural science teachers in Lagos schools. 275 questionnaires properly completed were analyzed. Data reveal that 130 teachers are using the Internet for teaching agricultural science in classrooms as well as for various activities that enhance their professional development. Nevertheless, it was found that agricultural science teachers in Lagos State have not fully utilised the Internet because of barriers related to time factor, accessibility, and facilities. It is suggested that for the proliferation of Internet practices, there needs to be an increase in funding for technology, an introduction of computer/technology education, a provision of pedagogical training for teachers, and a provision of administrational support.

  2. Especies del Fitoplancton Presentes en el Lago Tonatiahua, Morelos, México Especies del Fitoplancton Presentes en el Lago Tonatiahua, Morelos, México

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    Roberto Trejo Albarrán

    2012-02-01

    Full Text Available Se llevó a cabo un reconocimiento de las especies del fitoplancton del Lago Tonatiahua, Morelos, México, registrándose un total de 24 especies, incluidas en las siguientes clases: Chlorophyceae con 4 especies, Chlamydophyceae con 3 especies, Cyanophyceae con 3 especies, Euglenophyceae con 2 especies, Dinophyceae con 1 especie y Bacillariophyceae con 11, se da una descripción de cada una de ellas y la distribución que presentaron en la columna de agua durante el estudio. An examination of the phytoplankton species from the Tonatiahua lake of Morelos, Mexico was carried out. 24species were examinated. They were included in the following classification: Chlorophyceae with 4species, Chlamydophyceae with 3species, Cyanophyceae with 3 species, Euglenophyceae with 2 species, Dinophyceae with 1 species, Bacillariophyceae with 11 species, a description of each are and its distribution in a water column during the test are presented in this paper.

  3. DIVERSIDAD DE MURCIÉLAGOS EN CUATRO LOCALIDADES DE LA ZONA COSTANERA DEL DEPARTAMENTO DE CÓRDOBA-COLOMBIA

    Directory of Open Access Journals (Sweden)

    Jesús Ballesteros C

    2007-12-01

    Full Text Available Objetivo. Contribuir al conocimiento de la diversidad de especies de murciélagos en cuatro localidades de la subregión costanera del departamento de Córdoba. Materiales y métodos. Durante los meses noviembre y diciembre del 2005, se realizó la exploración de la comunidad de murciélagos en cuatro localidades de la zona costanera del departamento de Córdoba. Mediante la metodología de evaluación ecológica rápida (EER, se eligieron áreas con fragmentos boscosos representativos de la zona costanera, con formación vegetal característica de bosque seco tropical. Se realizaron capturas de murciélagos, utilizando redes de niebla durante dos noches seguidas en cada sitio seleccionado, con un esfuerzo de muestreo de 40 horas/red. Resultados. Se registraron 15 especies de murciélagos distribuidos en 10 géneros y 3 familias. La especie más abundante fue Artibeus jamaicensis con el 36,6% de las capturas, seguida de Sturnira lilium y Glossophaga soricina 13,8 y 10,9%, respectivamente. Se registró la presencia de la especie Desmodus rotundus (murciélago vampiro, vector del virus de la rabia bovina. Conclusiones. Los datos indicaron que aún con el alto grado de intervención humana existente en la subregión costanera, y que pese a la homogenización de la matriz del paisaje por los efectos de la ganadería extensiva, los fragmentos de bosques estudiados presentan una importante riqueza de murciélagos, que son considerados tolerantes a habitats con disturbios y de áreas abiertas, especialmente de la familia Phyllostomidae que fue la mejor representada con 12 especies.

  4. Critical factors that impact on the efficiency of the Lagos seaports

    Directory of Open Access Journals (Sweden)

    Francis Ojadi

    2015-07-01

    Full Text Available Background: Since the past two decades, the Lagos seaports have experienced vessel and storage yard cargo congestion, resulting in dwell times of about 30 days for containerised imports and high trade logistics costs. Objectives: The purpose of this study was to identify the critical factors that impact the operational efficiency of the Lagos seaports with a view to improving liner trade activities. Method: The study adopted an operational-based approach to understand the dynamics of the various interfaces of the port value chain. The research paradigm adopted for the study was therefore a combination of constructivism and post-positivism paradigms, which entailed the exploration and understanding of the various stakeholders in the port value chain. The epistemology of the research relied on the use of the exploratory sequential mixed method research technique (i.e. the qualitative approach followed by the quantitative approach at the operational level of port operations. Results: The result of the research showed that significant challenges exist and that some of these challenges cut across all functions of port operations. Challenges are experienced in the areas of corruption, trade fraud, transport infrastructure deficits, the absence of a supply chain culture and shortcomings in the execution of the ‘contract of customs’. Additionally, these factors include the deficiencies in services and facilities provided by state agencies and government-appointed service providers and private sector companies such as truckers, inland container depots, Inland Container Depots (ICDs and terminal operators. Conclusion: Specific recommendations are made to address the issues identified which, if implemented, could significantly address the current inefficiencies observed in the Lagos seaport’s operations.

  5. Recovery and recycling practices in municipal solid waste management in Lagos, Nigeria

    International Nuclear Information System (INIS)

    Kofoworola, O.F.

    2007-01-01

    The population of Lagos, the largest city in Nigeria, increased seven times from 1950 to 1980 with a current population of over 10 million inhabitants. The majority of the city's residents are poor. The residents make a heavy demand on resources and, at the same time, generate large quantities of solid waste. Approximately 4 million tonnes of municipal solid waste (MSW) is generated annually in the city, including approximately 0.5 million of untreated industrial waste. This is approximately 1.1 kg/cap/day. Efforts by the various waste management agencies set up by the state government to keep its streets and neighborhoods clean have achieved only minimal success. This is because more than half of these wastes are left uncollected from the streets and the various locations due to the inadequacy and inefficiency of the waste management system. Whilst the benefits of proper solid waste management (SWM), such as increased revenues for municipal bodies, higher productivity rate, improved sanitation standards and better health conditions, cannot be overemphasized, it is important that there is a reduction in the quantity of recoverable materials in residential and commercial waste streams to minimize the problem of MSW disposal. This paper examines the status of recovery and recycling in current waste management practice in Lagos, Nigeria. Existing recovery and recycling patterns, recovery and recycling technologies, approaches to materials recycling, and the types of materials recovered from MSW are reviewed. Based on these, strategies for improving recovery and recycling practices in the management of MSW in Lagos, Nigeria are suggested

  6. Holocene climate variability and anthropogenic impacts from Lago Paixban, a perennial wetland in Peten, Guatemala

    Science.gov (United States)

    Wahl, David B.; Hansen, Richard D.; Byrne, Roger; Anderson, Lysanna; Schreiner, T.

    2016-01-01

    Analyses of an ~ 6 m sediment core from Lago Paixban in Peten, Guatemala, document the complex evolution of a perennial wetland over the last 10,300 years. The basal sediment is comprised of alluvial/colluvial fill deposited in the early Holocene. The absence of pollen and gastropods in the basal sediments suggests intermittently dry conditions until ~ 9000 cal yr. BP (henceforth BP) when the basin began to hold water perennially. Lowland tropical forest taxa dominated the local vegetation at this time. A distinct band of carbonate dating to ~ 8200 BP suggests regionally dry conditions, possibly associated with the 8.2 ka event. Wetter conditions during the Holocene Thermal Maximum are indicated by evidence of a raised water level and an open water lake. The timing of this interval coincides with strengthening of the Central American Monsoon. An abrupt change at 5500 BP involved the development of a sawgrass marsh and onset of peat deposition. The lowest recorded water levels date to 5500–4500 BP. Pollen, isotope, geochemical, and sedimentological data indicate that the coring site was near the edge of the marsh during this period. A rise in the water table after 4500 BP persisted until around 3500 BP. Clay marl deposition from 3500 to 210 BP corresponds to the period of Maya settlement. An increase in δ13C, the presence of Zea pollen, and a reduction in the percentage of forest taxa pollen indicate agricultural activity at this time. In contrast to several nearby paleoenvironmental studies, proxy evidence from Lago Paixban indicates human presence through the Classic/Postclassic period transition (~ 1000 BP) and persisting until the arrival of Europeans. Cessation of human activity around 210 BP resulted in local afforestation and the re-establishment of the current sawgrass marsh at Lago Paixban.

  7. Lake-level variations and tides in Lago Argentino, Patagonia: insights from pressure tide gauge records

    Directory of Open Access Journals (Sweden)

    Andreas Richter

    2015-08-01

    Full Text Available Based on precise pressure tide gauge observations lake-level records are derived for two sites in Lago Argentino, southern Patagonia, of 2.5 and 1 years of duration. Applying the tools of time series analysis, the principal processes affecting the lake level are identified and quantified. Lake-level changes reflecting variations in lake volume are dominated by a seasonal cycle of 1.2 m in amplitude. Lake-volume changes occur in addition with a daily period in response to melt water influx from surrounding glaciers. Sporadic lake-volume jumps are caused by bursting of the ice dam of Perito Moreno glacier. Water movements in Lago Argentino are dominated by surface seiches reaching 20 cm in amplitude. Lake tides reach a maximum amplitude of 3 mm. The comparison of the tidal signal extracted from the lake-level observations with a model composed of the contributions of body tide and ocean tidal loading indicates a phase shift of 23° which is most likely explained by an 1 hour phase lag of global ocean tide models in the region of the highly fragmented Pacific coast. The comparison of the obtained results with those of a previous study of Lago Fagnano, Tierra del Fuego, allows to relate differences in the hydrological and hydrodynamic processes between both lakes to morphological properties. This leads to a tentative prediction of the lake-level variability to be expected from other great Patagonian lakes. The presented geodetic results shall serve as a starting point for a detailed limnological investigation of these aquatic ecosystems.

  8. Holocene climate variability and anthropogenic impacts from Lago Paixban, a perennial wetland in Peten, Guatemala

    Science.gov (United States)

    Wahl, David; Hansen, Richard D.; Byrne, Roger; Anderson, Lysanna; Schreiner, Thomas

    2016-03-01

    Analyses of an 6 m sediment core from Lago Paixban in Peten, Guatemala, document the complex evolution of a perennial wetland over the last 10,300 years. The basal sediment is comprised of alluvial/colluvial fill deposited in the early Holocene. The absence of pollen and gastropods in the basal sediments suggests intermittently dry conditions until 9000 cal yr. BP (henceforth BP) when the basin began to hold water perennially. Lowland tropical forest taxa dominated the local vegetation at this time. A distinct band of carbonate dating to 8200 BP suggests regionally dry conditions, possibly associated with the 8.2 ka event. Wetter conditions during the Holocene Thermal Maximum are indicated by evidence of a raised water level and an open water lake. The timing of this interval coincides with strengthening of the Central American Monsoon. An abrupt change at 5500 BP involved the development of a sawgrass marsh and onset of peat deposition. The lowest recorded water levels date to 5500-4500 BP. Pollen, isotope, geochemical, and sedimentological data indicate that the coring site was near the edge of the marsh during this period. A rise in the water table after 4500 BP persisted until around 3500 BP. Clay marl deposition from 3500 to 210 BP corresponds to the period of Maya settlement. An increase in δ13C, the presence of Zea pollen, and a reduction in the percentage of forest taxa pollen indicate agricultural activity at this time. In contrast to several nearby paleoenvironmental studies, proxy evidence from Lago Paixban indicates human presence through the Classic/Postclassic period transition ( 1000 BP) and persisting until the arrival of Europeans. Cessation of human activity around 210 BP resulted in local afforestation and the re-establishment of the current sawgrass marsh at Lago Paixban.

  9. Constraints to adoption of improved hatchery management practices among catfish farmers in Lagos State

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    Oghenetejiri DIGUN-AWETO

    2017-11-01

    Full Text Available Aquaculture has shown capacities to serve as means of livelihood, improve living standards, provide employment and generate foreign exchange in many countries. Recent investment in Nigerian aquaculture has been target towards catfish farming. However, small quantity and poor quality fish seeds are one of the problems limiting production. Consequently, Lagos State government introduced improved breeding and hatchery management practices as a package to fish hatchery operators with the aim of improving fish seed quantity and quality in the state. Nevertheless, the dissemination of the package has not yielded the desired result. This study assessed the constraints to adoption of improved hatchery management practices among catfish farmers in Lagos State. With structured questionnaire, 150 catfish farmers, randomly selected from 12 local government areas spread across Lagos State were interviewed. Despite that majority of the respondents strongly agreed or agreed to the fact that improved hatchery management practices have positive impacts on breeding, hatching, and survival of fish fry, majority of them affirmed that high cost of acquisition, high technicality in using the improved management practices as well as inadequate information about the improved management practices are primary reasons for non-adoption of some of the improved practices. Some of the limitations faced by the respondents include insufficient capital, lack of technical expertise to use the methods adequately, non-availability of inputs, expensive cost of facility maintenance, poor information dissemination and insufficient technical support from the extension agents and the state government. Although the adoption of improved practices has not been total, due to these constraints, the farmers’ knowledge of the improved hatchery management practices is broad. There is a need for the state government to subsidize the improved hatchery technologies and inputs, in addition to

  10. Second-hand smoke exposure among workers of restaurants, bars, and nightclubs in Lagos State

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    Oluwakemi Ololade Odukoya

    2017-01-01

    Full Text Available Background: The Lagos State Regulation of Smoking Law was passed in February 2014 and stipulates the total restriction of tobacco smoking in listed public places. Workers in hospitality venues are at a high risk of exposure to second-hand smoke (SHS. Therefore, their awareness of the health risks, attitudes toward SHS and their reported levels of exposure may play a crucial role in developing an effective monitoring, implementation, and enforcement mechanism. Methods: We conducted a cross-sectional, descriptive study among workers in restaurants, bars, and nightclubs registered with the Lagos State Ministry of Tourism in the second quarter of the year 2014. We used a multistage sampling technique to select one respondent each from the 300 centers randomly selected to participate in the survey. Data were collected using a modified version of the World Health Organization Global tobacco surveillance system tools. Univariate and bivariate analysis were carried out. Exposure to SHS in the workplace and in other public places was treated as the outcome variable in the bivariate analysis. Results: Majority (75.3% of the respondents were aged between 21 and 40 years with a mean age of 27.7 + 8.6 years. Many (66% were waiters/waitresses and spent more than 8 h a day. Most (60.6% of the venues were indoor only establishments, and 26.8% had no form of smoking restrictions. Majority of the respondents were exposed to SHS at work, and this was higher in bars and nightclubs. A bivariate analysis of results showed that workers were exposed to SHS at work irrespective of workplace smoking restrictions or respondents smoking status. Conclusion: Our study demonstrates that second-hand smoke exposure is very high (65% in smokers; 65.6% in nonsmokers among workers in restaurants, bars, and nightclubs in Lagos State. We are therefore of the opinion that strict enforcement of law would ensure the protection of these workers.

  11. Dam failure analysis for the Lago de Matrullas Dam, Orocovis, Puerto Rico

    Science.gov (United States)

    Torres-Sierra, Heriberto; Gómez-Fragoso, Julieta

    2015-01-01

    The U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, completed a hydrologic and hydraulic study to assess the potential hazard to human life and property associated with the hypothetical failure of the Lago de Matrullas Dam, located within the headwaters of the Río Grande de Manatí. The hydrologic study yielded outflow hydrographs and peak discharges for Lago de Matrullas and other subbasins in the Río Grande de Manatí hydrographic basin for three extreme rainfall events: (1) a 6-hour probable maximum precipitation (PMP) event, (2) a 24-hour PMP event, and (3) a 100-year-recurrence, 24-hour rainfall event. The hydraulic study simulated the hypothetical dam failure of Lago de Matrullas using hypothetical flood hydrographs generated from the hydrologic study and selected dam breach parameters. The flood wave resulting from the failure was downstream-routed through the lower reaches of the Río Matrullas, the Río Toro Negro, and the Río Grande de Manatí for determination of water-surface profiles developed from the event-based hydrologic scenarios and “sunny day” (no precipitation) conditions. The Hydrologic Modeling System (HEC–HMS) and the River Analysis System (HEC–RAS) computer programs, developed by the Hydrologic Engineering Center (HEC) of the U.S. Army Corps of Engineers, were used for the hydrologic and hydraulic modeling, respectively. The flow routing in the hydraulic analyses was performed using the unsteady-state flow module available in the HEC–RAS model.

  12. Electricity supply efficiency and organizational growth and profitability in Lagos, Nigeria

    Science.gov (United States)

    Adeleke, Adedeji Tajudeen

    A modern and efficient infrastructure is a basic necessity for economic development and integration into the global economy. The specific problem was the inadequate and unreliable supply of electricity to manufacturing corporations in Lagos, Nigeria. The purpose of the current quantitative correlational research study was to examine if there was a correlation between electricity supply efficiency and organizational growth and profitability in manufacturing corporations in Lagos, Nigeria. The population of the current correlational research study involved 28 out of 34 manufacturing corporations from various industrial sectors in Lagos, Nigeria, that are listed and traded on the Nigerian Stock Exchange. Spearman rho correlations were used to assess the relationships between independent variables of electricity supply efficiency levels and the dependent variables of organizational growth and profitability. The result of the correlational analysis of the data revealed that there was a statistically significant, strong positive correlation between the Average Gross Income (1998-2007) and Average Actual Electricity supply efficiency level (1998-2007), rho = 0.57; p = 0.002. A statistically significant, strong positive correlation was found between the Average Balance Sheet Size (1998-2007) and Average Actual Electricity Supply Efficiency Level (1998-2007), rho = 0.54; p = 0.003. A statistically significant, strong positive correlation between the Average Profit After Tax (1998-2007) and Average Actual Electricity Supply Efficiency Level (1998-2007), rho = 0.60; p = 0.001, was found. No statistically significant correlation between the Average Return on Investment (1998-2007) and Average Actual Electricity supply efficiency level (1998-2007), rho = 0.19; p = 0.33, was discovered.

  13. Aplicación del Índice de Calidad del Agua (ICA). Caso de estudio: Lago de Izabal, Guatemala

    OpenAIRE

    Aguirre Cordón, Maritza Raquel; Vanegas Chacón, Eddi Alejandro; García Álvarez, Nancy

    2016-01-01

    La contaminación de los cuerpos superficiales de agua es un proceso incipiente debido a acciones antrópicas, entre las que destacan agricultura de exportación, ganadería y crecimiento desordenado de las áreas residenciales tanto a nivel urbano como rural. La cuenca del Lago de Izabal y Río Dulce, drena al Lago de Izabal, en una relación de superficies de 10:1; por su naturaleza navegable está sometido a procesos de degradación incipiente. Esta investigación, con base en registros históricos d...

  14. Use of Remote Sensing and Local Knowledge for Geoconservation of Regiao dos Lagos, Brazil

    Science.gov (United States)

    Avelar, S.; Vasconcelos, G.; Mansur, K. L.; Anjos, S. C.

    2013-12-01

    A series of lagoons can be found along the coastline of Rio de Janeiro, in the so-called Regiao dos Lagos. The lagoons differ in size, physicochemical, sedimentological and biological characteristics. Rare examples of litifying microbialites that produce stromatolites, the oldest fossils on Earth, can be found living in this lagoon system. The occurrence of stromatolites in the region is of great scientific interest because it enables the study of possible analogues of the earliest life on Earth. However, this region has been suffering from intense human activities and degradations. Geoconservation planning requires an assessment of the characteristics of the region and its potential threats. The primary goal of this study is to assess physical environmental changes and anthropogenic impacts over the last four decades in Regiao dos Lagos. Using a broad integrative assessment combining remote sensing, GIS, field studies and local knowledge of communities, land-cover and land-use classes were identified, as well as the main human activities impacting the environment. The seasonal and weekend tourism and urban sprawl in this coastal area of Rio de Janeiro triggers the occupation of new areas and the removal of natural vegetation, especially on lagoon margins. This disorderly occupation by an ever increasing population, with both legal and illegal constructions and the subsequent overload of the local infrastructure, e.g. increase of electrical energy consumption, volume of vehicles, pollution in air, water and soil and problems with water supply and wastewater treatment, are hastening the gradual degradation of the lake ecosystem. The main driving forces to environmental changes over the last four decades in Regiao dos Lagos were the change of dense vegetation, saline and bare soil classes into built-up areas, adding to the poor waste treatment and inadequate sewage disposal. This analysis provides a basis for a better control of anthropogenic impacts and

  15. Reconstituição paleoambiental do Lago Santa Ninha, Várzea do Lago Grande de Curuai, Pará, Brasil Paleoenvironmental reconstruction of an Amazon floodplain lake, Lago Santa Ninha, Varzea do Lago Grande de Curuai, Pará, Brasil

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    Luciane Silva Moreira

    2009-09-01

    Full Text Available Este estudo teve por objetivo reconstituir as mudanças paleoambientais e paleohidrológicas no baixo Amazonas. Um testemunho de sedimento foi coletado no Lago Santa Ninha, na várzea do Lago Grande de Curuai, localizada na margem direita do Rio Amazonas a aproximadamente 850 km da foz. O teor de água, a granulometria, as datações com carbono 14, os conteúdos de carbono orgânico e nitrogênio total e o isótopo estável do carbono (δ13C foram utilizados para determinar os processos sedimentares a que o meio esteve submetido. O testemunho estudado possui 270 cm de comprimento que corresponde a um período de 5600 anos cal AP. Este estudo colocou em evidência diferentes ambientes sedimentares: na base do testemunho até 4900 anos cal AP há uma vegetação inundada que foi gradualmente substituida por bancos de gramíneas e por uma planicie com secas sazonais em 4000 anos cal AP até alcançar, desde 600 anos AP as condições atuais deste lago. Estas alterações podem ter ocorrido em decorrência de mudanças no ciclo hidrológico do Rio Amazonas que, por sua vez, também são reflexos de alterações climáticas.Physical, chemical and geochemical characteristics of lacustrine sediments were studied to reconstruct paleohydrologyical control on sedimentation in an Amazonian floodplain. A core was collected at the Lago Grande de Curuai floodplain, in the Santa Ninha Lake, located on the right margin of the Amazon River at 850 km of the estuary. Water content, granulometry, radiocarbon dating, organic carbon, nitrogen content and δ13C were used to characterize the sedimentary processes. The core is 270 cm-long which corresponds to 5600 cal years BP. The core points out different sedimentary environments: flooded vegetation at the base of the core till 4900 cal years BP is substituted by grass banks changing to a floodplain encompassing prolonged annual dryness at 4000 cal years BP. Since 600 cal years BP, the present day Varzea Lake

  16. Algumas notas sobre o Brome Mediterrânico do Museu Regional de Lagos

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    Abel VIANA

    2009-10-01

    Full Text Available Reunidos durante varios anos, merce dos esforços de seu Director, que os obteve de ofertas, ou em resultado de pesquisas suas, possui o Museu Regional de Lagos numerosos objectos de certo interesse, cuja divulgaçâo ná será inútil, visto que, além de valerem como elementos de comparacáo, certos ha que constituem pecas pouco vulgares. Demais, todos eles caracterizam a arqueologia do Algarve, em especial a da regiáo do Sacrum Promunturium.

  17. Malarone treatment failure and in vitro confirmation of resistance of Plasmodium falciparum isolate from Lagos, Nigeria.

    Science.gov (United States)

    Fivelman, Quinton L; Butcher, Geoffrey A; Adagu, Ipemida S; Warhurst, David C; Pasvol, Geoffrey

    2002-02-08

    We report the first in vitro and genetic confirmation of Malarone (GlaxoSmithKline; atovaquone and proguanil hydrochloride) resistance in Plasmodium falciparum acquired in Africa. On presenting with malaria two weeks after returning from a 4-week visit to Lagos, Nigeria without prophylaxis, a male patient was given a standard 3-day treatment course of Malarone. Twenty-eight days later the parasitaemia recrudesced. Parasites were cultured from the blood and the isolate (NGATV01) was shown to be resistant to atovaquone and the antifolate pyrimethamine. The cytochrome b gene of isolate NGATV01 showed a single mutation, Tyr268Asn which has not been seen previously.

  18. HISTORIA AMBIENTAL DE UN LAGO ALPINO EN EL CENTRO DE MÉXICO (1230-2010

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    Estela Cuna

    2015-01-01

    Full Text Available Los lagos de alta montaña, con una baja mineralización, alcalinidad y contenido de nutrientes, son ecosistemas sensibles a perturbaciones naturales o antropogénicas y en la actualidad están amenazados por el calentamiento global. En México existen dos lagos de alta montaña (> 3,800 m snm: La Luna y El Sol, en el cráter del Nevado de Toluca. Análisis de parámetros químicos y de diatomeas en sedimentos superficiales permiten identificar que La Luna es más ácido y menos mineralizado que El Sol y que a pesar de su proximidad geográfica cada lago tiene un conjunto de diatomeas característico, con menor abundancia y riqueza específica en La Luna. En este lago dominan Encyonema perpusillum y Psammothidium helveticum y en El Sol Cavinula pseudoscutiformis , Psammothidium levanderi y Aulacoseira distans. Con base en esta distribución se interpreta el registro de diatomeas de una secuencia sedimentaria de La Luna, de 57 cm, fechada con 210 Pb y 14 C en la que también se realizaron análisis de contenido de cladóceros y de susceptibilidad magnética. Todos estos indicadores permiten ubicar el inicio de una tendencia hacia climas secos y fríos alrededor de los años 1350 y 1510, que corresponde a la Pequeña Edad de Hielo (PEH, la cual tiene su máxima expresión entre los años 1660 y 1760, durante el mínimo de actividad solar de Maunder. Las características ambientales de sequía y frío se observan hasta principios del siglo XX. La comparación de este registro con otros disponibles permite concluir que durante la PEH hubo una tendencia regional en el centro de México hacia climas secos.

  19. Centralización del bombeo hidraulico en el campo lago agrío

    OpenAIRE

    Ronquillo Del Pozo, Carlos; Medina Vargas, William; Roman Franco, Hector

    2009-01-01

    El presente trabajo tiene como finalidad la construcción de dos estaciones de bombeo hidráulico centralizadas, la primera será instalada en la estación de producción central y la otra en la estación de producción norte, del campo Lago Agrio propiedad de Petroecuador ,ya que existe el espacio físico y la infraestructura necesaria para su construcción. La construcción de este sistema centralizado se lo propone como solución al problema energético por el cual atraviesa el sistema de bombeo...

  20. Anti-malarial drug quality in Lagos and Accra - a comparison of various quality assessments

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    Bate Roger

    2010-06-01

    Full Text Available Abstract Background Two major cities in West Africa, Accra, the capital of Ghana, and Lagos, the largest city of Nigeria, have significant problems with substandard pharmaceuticals. Both have actively combated the problem in recent years, particularly by screening products on the market using the Global Pharma Health Fund e.V. Minilab® protocol. Random sampling of medicines from the two cities at least twice over the past 30 months allows a tentative assessment of whether improvements in drug quality have occurred. Since intelligence provided by investigators indicates that some counterfeit producers may be adapting products to pass Minilab tests, the results are compared with those from a Raman spectrometer and discrepancies are discussed. Methods Between mid-2007 and early-2010, samples of anti-malarial drugs were bought covertly from pharmacies in Lagos on three different occasions (October 2007, December 2008, February 2010, and from pharmacies in Accra on two different occasions (October 2007, February 2010. All samples were tested using the Minilab® protocol, which includes disintegration and active ingredient assays as well as visual inspection, and most samples were also tested by Raman spectrometry. Results In Lagos, the failure rate in the 2010 sampling fell to 29% of the 2007 finding using the Minilab® protocol, 53% using Raman spectrometry, and 46% using visual inspection. In Accra, the failure rate in the 2010 sampling fell to 54% of the 2007 finding using the Minilab® protocol, 72% using Raman spectrometry, and 90% using visual inspection. Conclusions The evidence presented shows that drug quality is probably improving in both cities, especially Lagos, since major reductions of failure rates over time occur with all means of assessment. Many more samples failed when examined by Raman spectrometry than by Minilab® protocol. The discrepancy is most likely caused by the two techniques measuring different aspects of the medication

  1. Influence of social media on business (A case study of Lagos, Nigeria)

    OpenAIRE

    Imran, Shakir

    2014-01-01

    Since the advent of social media has bring a new landscape and present a new grid of personal connections, businesses have been seeing a tremendous opportunities and are intense to draw from (social media or the trend). Many studies has been conducted stating the reasons to draw from social media and in other to help companies to gain a better position in the transition, The main reason for writing this research is to analyze the influence of social media on Lagos Nigerian businesses. Th...

  2. Comparison between sedimentary and living diatoms in Lago Maggiore (N. Italy: implications of using transfer functions

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    Simona MUSAZZI

    2001-02-01

    Full Text Available We compared the recent history of living planktonic diatom assemblages in Lago Maggiore with the remains found in the topmost section of 14 sediment cores taken from the lake. Sediment samples showed a marked domination of planktonic taxa, but a significant proportion of benthic taxa was found in cores collected close to river mouths. Between-core variability in diatom assemblage and in diatom-inferred total phosphorus concentration was also estimated. The implications of our results for calibration data sets relating environmental variables to diatom assemblages are also discussed.

  3. Pathloss Modelling of less dense urban area in Lagos State using Lee Model

    OpenAIRE

    O. Shoewu

    2017-01-01

    In this study we aim to adopt a propagation model for a less dense urban area in Lagos state by examining one of the popular empirical path loss models for mobile communication. Lee’s model was compared with measured path loss obtain from the field measurement at GSM frequency of 900 MHz . TEMS Investigation tool was used for the drive test. The measurements of the received signal strength were collected through drive test with the aid of an Ericson test mobile system (TEMS). This was conduct...

  4. Sexual Violence Among Out-of-School Female Adolescents in Lagos, Nigeria

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    Kofoworola Odeyemi

    2016-10-01

    Full Text Available Sexual violence against females is a public health problem. This descriptive cross-sectional study sought to determine the prevalence of sexual violence among out-of-school female adolescents in Lagos, Nigeria and examine the context in which it occurs. Three hundred and fifty adolescents, between the ages of 10 and 19 years, working in Sandgrouse market, Lagos, were selected using cluster sampling. Data were collected using an interviewer-administered questionnaire. Almost half (42.9% of the respondents have had sexual intercourse, and median age at initiation was 17 years. Forced initiation was reported by 15.8%, and 36.3% reported that first intercourse was due to coercion. Among the sexually active, only 12.3% stated that “it is what they desire.” Majority of respondents (64.1% believe that rape is common in their community, and 18% of the sexually active have experienced rape. Out-of-school adolescents in this community are at risk of sexual violence. The factors that make them vulnerable need to be addressed.

  5. Urbanization, housing, homelessness and climate change adaptation in Lagos, Nigeria: Lessons from Asia

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    Ilesanmi Adetokunbo

    2015-12-01

    Full Text Available The phenomenon of climate change heralds distinctive challenges for sub-Saharan Africa’s urban areas, with economic, social, and health impacts, and severe effects on housing and infrastructure. This study examined climate-change induced vulnerabilities including the urban housing crisis and homelessness in the context of Lagos mega-city, Nigeria, with a view to defining the potential lessons to learn from the Asian urban experience. The study conducted case-study analyses of Lagos and the Asian urban experience, highlighting the megacity-related vulnerabilities. It identified gender and aging as key factors in understanding vulnerability. Lessons from Asia relate to: the conscious policy-linkage of urban demographic expansion and economic growth; synergy between formal and informal sectors; urban densification through compact, mixed-land use development; broad-based urbanization; metropolitan expansion; pursuit of slum-free cities; prominence of housing in national policies; pro-poor financial frameworks; and extensive adoption of mitigation and adaptation strategies in the coastal conurbations. The paper concluded on the critical role of urban governance in reducing vulnerability, the need for greater multi-disciplinary stakeholders’ collaboration and partnership, and the expediency of fitting adaptation strategies and resilience responses to specific needs, capacities and priorities of impact groups. These could enhance the transformation of mega-cities into more adaptable and resilient urban systems.

  6. Performance Risks Allocation in Bot Infrastructure in Nigeria: A Case Study of Lagos Infrastructure Project

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    Sanni Gabriel A.

    2017-08-01

    Full Text Available The study assessed allocation, criteria and allotment effectiveness of performance risks in Build- Operate-Transfer (BOT transportation infrastructure in Nigeria using Lagos Infrastructure Project (LIP as a case study. LIP is the only BOT-procured tolled road that has attained ‘operate’ stage of BOT cycle in Nigeria. It revealed that more operating risks were actually allocated to the concessionaire than the grantor and most of the risks were preferred retained by the allottee. Significant fraction of the risks was effectively allocated between the concessionaire and grantor except those that involve close interface between participants. While grantor rated nine risks high and seven risks very high; the concessionaire assessed nine risks to be high and five risks to be very high; the grantor rated the effectiveness level to be seventy three per cent and the concessionaire assessed it to be sixty four per cent. The study recommended that the evolving knowledge from Lagos Infrastructure Project (LIP should be documented to guide future BOT transactions in Nigeria.

  7. Mobile phones for retinopathy of prematurity screening in Lagos, Nigeria, sub-Saharan Africa.

    Science.gov (United States)

    Oluleye, Tunji S; Rotimi-Samuel, Adekunle; Adenekan, Adetunji

    2016-01-01

    Retinopathy of prematurity (ROP), thought to be rare in Nigeria, sub-Saharan Africa, has been reported in recent studies. Developing cost-effective screening is crucial for detecting retinal changes amenable to treatment. This study describes the use of an iPhone combined with a 20-D lens in screening for ROP in Lagos, Nigeria. The ROP screening program was approved by the Lagos University Teaching Hospital Ethical Committee. Preterm infants with birthweight of less than 1.5 kg or gestational age of less than 32 weeks were screened. In conjunction with the neonatologist, topical tropicamide (0.5%) and phenylephrine (2.5%) was used to dilate the pupils. A pediatric lid speculum was used. Indirect ophthalmoscopy was used to examine the fundus to ensure there were no missed diagnoses. An iPhone 5 with 20-D lens was used to examine the fundus. The App Filmic Pro was launched in the video mode. The camera flash served as the source of illumination. Its intensity was controlled by the app. The 20-D lens was used to capture the image of the retina, which was picked up by the camera system of the mobile phone. Another app, Aviary, was used to edit the picture. The images captured by the system were satisfactory for staging and determining the need for treatment. An iPhone combined with a 20-D lens appear to be useful in screening for ROP in resource-poor settings. More studies are needed in this area.

  8. Private sector participation in domestic waste management in informal settlements in Lagos, Nigeria.

    Science.gov (United States)

    Opoko, Akunnaya P; Oluwatayo, Adedapo A

    2016-12-01

    Lagos is one of the fastest growing cities in Africa, which is grappling with the challenges of poorly managed urbanisation. With an estimated population of about 17.5 million, solid waste management is one of the most pressing environmental challenges currently faced in the city. It is estimated that more than 9071847.4kg of urban waste is generated every day in the city. The city lacks the capacity to deal with such magnitude of waste. Consequently, the city has involved the private sector (private sector participation) in its waste management drive. This article examines the effectiveness of this public-private sector collaboration model in waste management in informal settlements in Lagos using empirical data. Major findings of the article include the irregularity of waste collection owing to a poor road network, an inadequate transport infrastructure and the desire to maximise profit, as well as poor waste handling and disposal methods by the private sector participation operators who are not chosen based on competence and capacity to perform. Another major finding is the lack of cooperation from residents evidenced in non-payment of bills and poor packaging of wastes, resulting in wastes being littered. The article concludes on the need to restructure the scheme through proper sensitisation of residents, selection of operators with demonstrable delivery capacity and provision of a well-maintained road network to facilitate access of operators to settlements. © The Author(s) 2016.

  9. Sustaining private sector participation (PSP) in solid waste management in Lagos, Nigeria, a developing country

    Energy Technology Data Exchange (ETDEWEB)

    Adebola, G. [Richbol Environmental Services Ltd., Lagos (Nigeria)

    2000-07-01

    Solid waste management in Lagos, Nigeria includes refuse collection and transportation to a landfill site. Disposal of the refuse and maintenance of the landfill site is also included in this task which, in the past was always a responsibility of the Government Agencies at the local level as a social service. This service has recently been privatised in the name of Private Sector Participation (PSP) in domestic refuse collection and disposal. As a new operator in about 23 wards in the ongoing PSP of domestic refuse, Richbol Environmental Ltd., recognized the enormous effort that government will have to make to sustain PSP in solid waste management. Governments can maintain control through re-orientation, legislation, enforcement, strengthening the PSP operators, integrating existing operators, and monitoring the activities of PSP operators. This paper presented a brief overview of the institutional changes that solid waste management has undergone in Lagos since 1977. It was emphasized that integrated waste management is extremely capital intensive. An integrated PSP can be a long term solution to waste management in developing, cash poor countries. The economic importance of PSP lies in the fact that it will reduce government expenditure and will also create a healthier environment and provide employment opportunities for thousands of employees and contribute to the gross domestic product of the country. 5 refs., 3 tabs., 1 fig.

  10. Addressing the Multiple Drivers of Wetland Ecosystems Degradation in Lagos, Nigeria

    Science.gov (United States)

    Agboola, J.; Ndimele, P. E.; Odunuga, S.; Akanni, A.; Kosemani, B.; Ahove, M.

    2015-12-01

    Several body of knowledge have noted the importance of wetland ecosystems in climate moderation, resource supply and flood risk reduction amongst others. Relevant as it may, rapidly increasing population and uncontrolled urban development poses a challenge in some regions and require understanding of the ecosystem components and drivers of change over a long period of time. Thus, the main thrust of this paper is to analyse multiple drivers of wetland ecosystems degradation in the last 30 years in the Lagos megacity using field study, desktop review, satellite data and laboratory analysis. Key drivers identified includes: conversion of wetlands to settlements and waste sink, land use planning that neglects wetland conservation and restoration, ineffective legal status for wetlands, over exploitation leading to degradation and fragmentation of wetland ecosystems governance. In stemming further loss of this vital ecosystem, this study adopted and proposed respectively, the Drivers, Pressure, State, Impact and Response (DPSIR) and Integrated Planning Approach (IPA) frameworks in analysing policy and governance issues in wetland development. These analyses figured out amongst others, strict conservation and sustainable use of wetland resources, habitat restoration, climate adaptation measures, legal protection and wetland management institution as major responses to current multiple pressures facing wetland ecosystems in Lagos. For these frameworks to be made meaningful, weak coordination among government agencies and institutional capacity in implementation and law enforcement, unsustainable resource extraction by private/business organization and issues on alternative sources of income on the part of the local communities amongst others needs to be addressed.

  11. Neighborhood Deprivation and Self-Rated Health in Lagos State, Nigeria

    Directory of Open Access Journals (Sweden)

    Rasheed Kola Ojikutu

    2008-10-01

    Full Text Available This study examines the effect of neighborhood deprivation on the perception of the individuals about their own health in Lagos State, Nigeria. Respondents were required to rate their own health as "excellent, very good, good, fair, poor and very poor". The questionnaire contained questions on various aspect of the respondents neighborhood and their perception about them. It was found that most neighborhoods in Lagos State are deprived of basic essentials of life such as electricity, water, good roads and security. Over 43% of the respondents claimed to have visited a hospital two or more times and 43.7% had lost at least two neighbors in the past one year. Over half (57.8% of the respondents rated their own health as good, 36.6% ranked their own health as fair while only 5.6% claimed to have poor health. A fitted regression model ( r2 = 0.644 showed that variables such as number of dependants, income, occupation, type of residential accommodation, ownership of house, number of rooms occupied, mode and convenience of transportation, accessibility to water, electricity and good roads and security jointly determine the perception of an individual about his own health status.Key Words: Neighborhood, Deprivation, Self Rated Health, Security, ResidenceDOI = 10.3126/dsaj.v2i0.1364Dhaulagiri Journal of Sociology and Anthropology Vol.2 pp.193-210

  12. Optically stimulated luminescence dating of archaeological ceramics from Osvaldo and Lago Grande sites in central Amazon

    International Nuclear Information System (INIS)

    Hazenfratz, Roberto; Tudela, Diego R.G.; Munita, Casimiro S.; Mittani, Juan C.R.; Tatumi, Sonia H.

    2013-01-01

    Thermoluminescence (TL) and optically stimulated luminescence (OSL) dating are two important techniques for dating archaeological and geological material, especially suitable for archaeological ceramics, where samples for 14 C dating are not available. In this work, five pottery shards from Osvaldo and Lago Grande archaeological sites were dated by OSL. For measurements, it was used the SAR protocol. The annual dose rates were estimated by the contents of U, Th and K, determined by instrumental neutron activation analysis (INAA) of the pottery shards and clay samples near both sites. Lago Grande and Osvaldo represent a microcosm of the region, and their proximity and high density of archaeological record turn them interesting to study possible relations of cultural and/or commercial exchange. Calculations showed that the water content is an important variable that cannot be neglected in OSL dating of pottery shards from central Amazon, due to the high humidity in regional soils. The results between 867 ± 101 and 1154 ± 62 years AD agreed with the average time span for the archaeological sites occupation found in the literature. (author)

  13. Preliminary characterization of ceramics from the Lago Grande archaeological site in the central Amazon by INAA

    International Nuclear Information System (INIS)

    Hazenfratz, Roberto; Munita, Casimiro S.; Neves, Eduardo G.; Oliveira, Paulo M.S.; Toyota, Rosimeiri G.

    2009-01-01

    The macroscopic characteristics of archaeological ceramics, such as the surface decoration and shape, are used as cultural and chronological indicators of ancient people. The combination of stylistic-typological studies with archaeometric analysis, as provenance studies, has been considered of great importance in Archaeology. The purpose of this paper is to contribute to the understanding of the pre-colonial Amazonian occupations. Inside this context, fifty ceramic fragments from the Lago Grande archaeological site were analyzed by INAA in order to characterize its elemental composition. The results were treated with multivariate statistics: Cluster, Principal Components and Discriminant Analysis. The results obtained by these three methods were compared in an effort to achieve some correlation with the archaeological context. It was stated the existence of two different groups of artifacts. They probably regard to the main ceramic phases found in the site excavation: Paredao and Manacapuru. Once confirmed by other archaeological analyses, these results could corroborate an exchange net among the former inhabitants of Lago Grande and other sites in the neighborhood. (author)

  14. Correlates of job satisfaction amongst quantity surveyors in consulting firms in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Henry Ndubuisi Onukwube

    2012-05-01

    Full Text Available Normal 0 false false false EN-US X-NONE X-NONE Job satisfaction is the sense of well- being, good feeling and positive mental state that emerge in an incumbent worker when his obtained reward consequent upon his performance is congruent with his equitable reward.The aim of this study is to ascertain the levels of job satisfaction amongst quantity surveyors in consulting firms in Lagos, Nigeria. Biographical and job descriptive index questionnaires (JDI were administered to gather the data. The JDI measures job satisfaction on five facets, namely, pay, promotions, supervision, co-workers and the work itself. A total of 100 questionnaires were collected and used for the study. The survey covered quantity surveyors in consulting firms in Lagos and the respondents were selected using stratified random sampling technique. Data collected were analysed using descriptive statistics, correlation matrix, t-test and one way anova. Findings of the study revealed that the respondents were satisfied with the relationship with co-workers, nature of work and the supervision they receive. Major sources of dissatisfaction are promotion and salaries of the respondents. This finding is a bold step and necessary benchmark for resolving major sources of dissatisfaction among quantity surveyors in consulting firms. The roles of other contextual factors on job satisfaction need to be contemplated for future research.

  15. Oral health care knowledge and practices of a group of deaf adolescents in Lagos, Nigeria.

    Science.gov (United States)

    Oredugba, Folakemi A

    2004-01-01

    This study sought to determine the oral health care knowledge and practices of a group of deaf adolescents in Lagos. The study involved 50 students of Wesley School 1 for the Deaf, Lagos (26 males and 24 females, aged 10-19 years, mean 13.3 +/- 2.8). Information about previous dental care, oral hygiene, and snacking habits were obtained through a questionnaire and sign language by the teachers. Only 12 percent of pupils had received dental care. Eight percent and 72 percent, respectively, gave correct answers to causes of tooth decay and bleeding gums. Ninety-four percent brushed their teeth once daily, with no significant sex difference (P > .05). Reported dental problems include bleeding gums (36%), tooth discoloration, and tooth decay. The majority of pupils (60%) preferred biscuits and soft drinks as snacks. More than 90 percent were willing to have a dental check-up. The oral health knowledge and practices of this group of children will improve through a controlled school-based oral health education program.

  16. Influence of Counselling Services on Perceived Academic Performance of Secondary School Students in Lagos State

    Directory of Open Access Journals (Sweden)

    Foluke Nike Bolu-Steve

    2017-04-01

    Full Text Available This study aimed at looking at the influence of counseling services on perceived academic performance of secondary school students in Lagos State. At the first stage, the researchers purposively selected Ikorodu L.G.A in Lagos State. At the researchers selected two schools (1 Private schools, & 1 Public schools, using simple random technique. Thus, a total of two schools were picked in each of the L.G.A. Finally, simple random sampling was used in selecting eighty students in each L.G.A, thus making a total of two hundred and forty Senior Secondary students that participated in the study. Six hypotheses were generated for the purpose of this study. Data were gathered using a researcher designed instrument tagged “Influence of Counselling Service on Academic Performance of Students Questionnaire (ICAPSQ. The findings of this study showed that there was no significant difference on the basis of age, class level and school type. However a significant difference was found on the basis of respondent’s religion, gender and the number of times the students visited the counselor. It was therefore recommended that the ministry of education should ensure that guidance and counselling units are established in all public and private secondary schools in Nigeria.

  17. Correlates of job satisfaction amongst quantity surveyors in consulting firms in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Henry Ndubuisi Onukwube

    2012-05-01

    Full Text Available Job satisfaction is the sense of well- being, good feeling and positive mental state that emerge in an incumbent worker when his obtained reward consequent upon his performance is congruent with his equitable reward.The aim of this study is to ascertain the levels of job satisfaction amongst quantity surveyors in consulting firms in Lagos, Nigeria. Biographical and job descriptive index questionnaires (JDI were administered to gather the data. The JDI measures job satisfaction on five facets, namely, pay, promotions, supervision, co-workers and the work itself. A total of 100 questionnaires were collected and used for the study. The survey covered quantity surveyors in consulting firms in Lagos and the respondents were selected using stratified random sampling technique. Data collected were analysed using descriptive statistics, correlation matrix, t-test and one way anova. Findings of the study revealed that the respondents were satisfied with the relationship with co-workers, nature of work and the supervision they receive. Major sources of dissatisfaction are promotion and salaries of the respondents. This finding is a bold step and necessary benchmark for resolving major sources of dissatisfaction among quantity surveyors in consulting firms. The roles of other contextual factors on job satisfaction need to be contemplated for future research.

  18. Mothers' human papilloma virus knowledge and willingness to vaccinate their adolescent daughters in Lagos, Nigeria.

    Science.gov (United States)

    Ezenwa, Beatrice N; Balogun, Mobolanle R; Okafor, Ifeoma P

    2013-01-01

    Human papillomavirus (HPV) is one of the most common sexually transmitted infections in sexually active adolescents and young women and has been implicated as a cause of the majority of cases of cervical cancer, which is the second most common cancer in women in Nigeria. HPV is preventable with the use of HPV vaccines. The objective of this study was to assess mothers' HPV knowledge and their willingness to vaccinate their adolescent daughters in Lagos, Nigeria. This study was a community-based, descriptive cross-sectional study carried out in July, 2012 in Shomolu Local Government Area (LGA) of Lagos State, Nigeria. Multistage sampling method was employed to select the 290 respondents who participated in the study. Structured, pretested, interviewer-administered questionnaires were used for data collection. Data was analyzed with Epi Info™ version 7. The study revealed low awareness of HPV (27.9%) and HPV vaccines (19.7%) among the mothers that participated. There was a high awareness for cervical cancer but little knowledge of its link to HPV. Awareness and utilization of HPV vaccines increased with increasing educational level (P knowledge about HPV and HPV vaccines, mothers were willing to vaccinate their daughters. We recommend improving mothers' knowledge by education and the possible inclusion of the vaccine in the national immunization schedule to eliminate the financial barrier.

  19. Optically stimulated luminescence dating of archaeological ceramics from Osvaldo and Lago Grande sites in central Amazon

    Energy Technology Data Exchange (ETDEWEB)

    Hazenfratz, Roberto; Tudela, Diego R.G.; Munita, Casimiro S., E-mail: robertohm@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil); Mittani, Juan C.R.; Tatumi, Sonia H. [Universidade Federal de Sao Paulo (UNIFESP), Santos, SP (Brazil)

    2013-07-01

    Thermoluminescence (TL) and optically stimulated luminescence (OSL) dating are two important techniques for dating archaeological and geological material, especially suitable for archaeological ceramics, where samples for {sup 14}C dating are not available. In this work, five pottery shards from Osvaldo and Lago Grande archaeological sites were dated by OSL. For measurements, it was used the SAR protocol. The annual dose rates were estimated by the contents of U, Th and K, determined by instrumental neutron activation analysis (INAA) of the pottery shards and clay samples near both sites. Lago Grande and Osvaldo represent a microcosm of the region, and their proximity and high density of archaeological record turn them interesting to study possible relations of cultural and/or commercial exchange. Calculations showed that the water content is an important variable that cannot be neglected in OSL dating of pottery shards from central Amazon, due to the high humidity in regional soils. The results between 867 ± 101 and 1154 ± 62 years AD agreed with the average time span for the archaeological sites occupation found in the literature. (author)

  20. Facilities available for biomedical science research in the public universities in Lagos, Nigeria.

    Science.gov (United States)

    John, T A

    2010-03-01

    Across the world, basic medical scientists and physician scientists work on common platforms in state-of-the-arts laboratories doing translational research that occasionally results in bedside application. Biotechnology industries capitalise on useful findings for colossal profit.1 In Nigeria and the rest of Africa, biomedical science has not thrived and the contribution of publications to global high impact journals is low.2 This work investigated facilities available for modern biomedical research in Lagos public universities to extract culprit factors. The two public universities in Lagos, Nigeria were investigated by a cross sectional questionnaire survey of the technical staff manning biomedical science departments. They were asked about availability of 47 modern biomedical science research laboratory components such as cold room and microscopes and six research administration components such as director of research and grants administration. For convenient basic laboratory components such as autoclaves and balances, 50% responses indicated "well maintained and always functional" whereas for less convenient complex, high maintenance, state-of-the-arts equipment 19% responses indicated "well maintained and always functional." Respondents indicated that components of modern biomedical science research administration were 44% of expectation. The survey reveal a deficit in state-of the-arts research equipment and also a deficit in high maintenance, expensive equipment indicating that biomedical science in the investigated environment lacks the momentum of global trends and also lacks buoyant funding. In addition, administration supporting biomedical science is below expectation and may also account for the low contributions of research articles to global high impact journals.

  1. Subordinación local al manejo territorial globalizado de la ribera del lago de Chapala

    Directory of Open Access Journals (Sweden)

    Adriana Hernández

    2017-06-01

    Full Text Available El presente artículo aborda el proceso de reapropiación del lago de Chapala, México. En las últimas décadas se han venido transformando el suelo y la producción agrícola en los municipios ribereños del lago de Chapala debido a la introducción de cultivos de exportación mediante sistemas modernos de producción tecnificada. Por lo que los cultivos tradicionales han ido disminuyendo o se producen con mayor uso de pesticidas, fertilizantes y agroquímicos. El papel del campesino ribereño también se ha modificado debido a que las agroempresas trasnacionales generan una estructura de renta o compra de suelos y parcelas que utilizan durante un periodo de años, perdiendo el dueño el uso de sus tierras a cambio de un ingreso seguro. En el escenario ribereño actual, el campesino se transforma en receptor económico y, en ocasiones, en trabajador de sus propias tierras, sin posibilidad de decisión sobre ellas. Por lo que se encuentran en peligro los saberes locales históricos de las poblaciones ribereñas así como su cultura lacustre.

  2. Determinación de arsénico y mercurio en agua superficial del lago de Atitlán

    Directory of Open Access Journals (Sweden)

    Juan Francisco Pérez Sabino

    2015-11-01

    Full Text Available El lago de Atitlán, considerado uno de los lagos más bellos del mundo, tiene una superficie de 125.7 km2, una profundidad máxima de aproximadamente 350 m, y se encuentra en el departamento de Sololá, en el occidente de Guatemala. Desde 2009 se han observado floraciones extensivas de cianobacterias en el lago, reflejando la contaminación del agua en la cuenca. Se determinaron los niveles de arsénico (As y mercurio (Hg en agua superficial del lago de Atitlán, por espectrofotometría de absorción atómica (EAA, en cuatro muestreos realizados en marzo, mayo, agosto y octubre de 2014 en 14 sitios. Diez sitios se encuentran localizados en el lago, habiendo sido definidos en estudios anteriores con base en su cercanía a poblaciones asentadas en la orillas del lago. Dos sitios corresponden a los principales ríos tributarios, y los restantes dos sitios a la entrada y salida de la planta de tratamiento Los Cebollales, ubicada en Panajachel. Los niveles de As encontrados en el lago de Atitlán, tributarios y en la planta de tratamiento, fueron superiores a 20 μg/L. Los resultados indican que la contaminación del lago de Atitlán por As se debe principalmente a la geología de la cuenca, al localizarse en una zona volcánica. Los niveles cuantificables de As, son superiores al nivel máximo permitido para agua potable en la Norma de Agua Potable (NGO 29001:99 de la Comisión Guatemalteca de Normas (COGUANOR, por lo que el agua del lago de Atitlán no se considera apta para el consumo humano.

  3. Evaluación de la eficiencia fotosintética del fitoplancton en un lago amazónico (Lago Boa y en un lago andino (Lago Guatavita Evaluation of the phytoplanktonic photosynthetic efficiency in an Amazon Lake (Lake Boa and in an Andean Lake (Lake Guatavita

    Directory of Open Access Journals (Sweden)

    Gabriel A. Pinilla

    2006-01-01

    Full Text Available La relación entre la fluorescencia variable y la fluorescencia máxima (Fv/Fm de las comunidades de algas se ha utilizado comúnmente como una medida de la eficiencia fotosintética del fitoplancton. Dicha eficiencia puede estar afectada por la localización de los ambientes acuáticos en distintas provincias limnológicas. En este trabajo se quiso establecer la diferencia en la relación Fv/Fm entre el lago Boa (150 msnm, Amazonía colombiana y el lago Guatavita (3000 msnm, cordillera oriental de los Andes colombianos. Los promedios de las eficiencias medidas fueron en general bajos (0,212 a 0,367 y 0,089 a 0,32 en los lagos Boa y Guatavita, respectivamente, lo que señala estrés fisiológico para las algas. La eficiencia fue mayor en aguas intermedias y presentó cambios fuertes entre épocas de muestreo y entre ecosistemas. En aguas superficiales se presentó fotoinhibición, la cual fue más fuerte en Guatavita. La eficiencia fotosintética fue menor en el lago andino debido posiblemente a diferencias climáticas, de altura sobre el nivel del mar y de estratificación. Durante los ensayos de laboratorio se observó que la eficiencia disminuyó con el tiempo, lo cual pudo deberse a una aclimatación de las algas a la oscuridad. Los datos de laboratorio confirmaron que el fitoplancton epilimnético del lago Guatavita estuvo fotoinhibido en la época de estratificación.Commonly relation between variable fluorescence and maximum fluorescence (Fv/Fm of the algae community has been utilized like a measure of the phytoplanktonic photosynthetic efficiency. Such efficiency can be affected by the water bodies' location in different limnological provinces. The goal of this work was to establish the differences in the Fv/Fm rate between Lake Boa (150 masl Colombian Amazon and Lake Guatavita (3000 masl, East Range in the Colombian Andes. In general, averages of the photosynthetic efficiencies were low (0.212 to 0.367 and 0.089 to 0.32 in lakes Boa and

  4. Home and School Environments as Determinant of Social Skills Deficit among Learners with Intellectual Disability in Lagos State

    Science.gov (United States)

    Isawumi, Oyeyinka David; Oyundoyin, John Olusegun

    2016-01-01

    The study examined home and school environmental factors as determinant of social skills deficit among learners with intellectual disability in Lagos State, Nigeria. The study adopted survey research method using a sample size of fifty (50) pupils with intellectual disability who were purposively selected from five special primary schools in Lagos…

  5. Human impacts and eutrophication patterns during the past ~200 years at Lago Grande di Avigliana (N. Italy)

    NARCIS (Netherlands)

    Finsinger, W.; Bigler, C.; Krähenbühl, U.; Lotter, A.F.; Ammann, B.

    2006-01-01

    A short sediment core from Lago Grande di Avigliana (Piedmont, Italy), the second most eutrophied lake in Italy, was analysed for pollen and diatoms to reconstruct land-use changes and to estimate baseline conditions for total phosphorus (TP) in the water column. Varve counts on sediment

  6. New Prof Omeje Pornography Addiction as Correlate of Psychosocial and Academic Adjustment of Students in Universities in Lagos State

    Science.gov (United States)

    Ohuakanwa, Chijioke Ephraim; Omeje, Joachim Chinweike; Eskay, Michael

    2012-01-01

    The study sought to investigate the relationship between pornography addiction and psychosocial and academic adjustment of students in universities in Lagos State. In order to achieve this objective, five research questions were formulated and two hypotheses postulated. The subjects for the study consisted of 616 full-time third-year undergraduate…

  7. A Study of Power Relations in Doctor-Patient Interactions in Selected Hospitals in Lagos State, Nigeria

    Science.gov (United States)

    Adam, Qasim

    2014-01-01

    This paper explores power relations in clinical interactions in Nigeria. It seeks to investigate the use of power between doctors and patients during consultations on patient-centred approach to medicine in selected public and private hospitals in Lagos State, Nigeria. The objective is to establish how doctors' projection of power, using the…

  8. Tres especies de aves acuáticas como bioindicadores de la contaminación por metales pesados del lago de Chapala.

    OpenAIRE

    González González, Deisy Catalina

    2016-01-01

    El lago de Chapala es el más grande del país, cuenta con una superficie de 114 659 ha, y es considerado uno de los más importantes, por los servicios económicos, recreativos y ecológicos que ofrece. Este lago es abastecido principalmente por el Rio Lerma, en el cual se vierten los desechos industriales del estado de México, Querétaro y Guanajuato, así como los desechos urbanos y agropecuarios del estado de Michoacán y Jalisco. Estos desechos al ingresar al lago pueden ser nocivos para l...

  9. Estudios experimentales de los efectos mecánicos sobre la biología del cartílago de crecimiento

    OpenAIRE

    Arriola, Forriol, F. F.

    1998-01-01

    El cartílago de crecimiento es la estructura encargada del crecimiento en longitud de los huesos largos. En el hombre los diferentes cartílagos de crecimiento cumplen su función durante un tiempo determinado hasta desaparecer. Cada cartílago de crecimiento tiene una velocidad de crecimiento y un tiempo de evolución determinado por factores que nos resultan desconocidos si bien se sabe que son tanto sistémicos como mecánicos. En este trabajo se presenta una revisión de trabajos experimental...

  10. Análisis computacional del comportamiento mecánico de cartílago articular basado en un modelo viscoelástico

    OpenAIRE

    Caballero Alemán, Pedro Julio

    2012-01-01

    El Cartílago articular es un tejido biológico, sorprendente como todos ellos, que posee un comportamiento característico dado por sus propiedades físicas y mecánicas. Alrededor del mundo se han propuestos múltiples modelos para describir dicho comportamiento complejo. En el presente trabajo se realiza una simulación del cartílago articular (subdominio) bajo un modelo bifásico poro-elástico lineal, donde se considera al cartílago compuesto por dos fases intrínsecamente incompresibles e inm...

  11. Factors influencing CD4 cell count in HIV-positive pregnant women in a secondary health center in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Akinbami AA

    2015-04-01

    Full Text Available Akinsegun A Akinbami,1 Abidoye Gbadegesin,2 Sarah O Ajibola,3 Ebele I Uche,1 Adedoyin O Dosunmu,1 Adewumi Adediran,4 Adekunle Sobande2 1Department of Haematology and Blood Transfusion, 2Department Of Obstetrics and Gynaecology, College of Medicine, Lagos State University, Ikeja, Lagos, Nigeria; 3Department of Haematology and Immunology, Ben-Carson School of Medicine, Babcock University, Ilisan, Ogun State, Nigeria; 4Department of Haematology and Blood Transfusion, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Lagos, Nigeria Background: Immunity in pregnancy is physiologically compromised, and this may affect CD4 count levels. It is well-established that several factors affect CD4 count level in pregnancy. This study aimed to determine the mean and reference range of CD4 count in human immunodeficiency virus (HIV-positive pregnant women in Lagos, Nigeria. Methods: A retrospective study was carried out at antenatal clinics of the Maternal and Child Center of a secondary health center in Lagos State, Nigeria. Records of HIV-positive pregnant women at various gestational ages, including CD4+ cell count at booking, packed cell volume (PCV at booking and labor, gestational age at delivery, and infant weight and sex were retrieved. The descriptive data was given as mean ± standard deviation (SD. Pearson's chi-squared test and correlation were used for analytical assessment. Results: Data were retrieved for a total of 143 patients. The mean age was 31.15±3.78 years. The mean PCV was 31.01%±3.79% at booking and 30.49%±4.80% during labor. The mean CD4 count was 413.87±212.09 cells/µL, with a range of 40 to 1,252 cells/µL. The mean infant weight was 3.05±0.45 kg, with a range of 2 to 5 kg. Age of the mother, gestational age, and PCV at booking were not statistically significantly associated with CD4 count. Conclusion: Maternal age, gestational age, and PCV at booking had no significant effects on CD4+ cell count levels in

  12. Papel trófico del microbial loop en un lago de inundación en la Amazonia Central

    Directory of Open Access Journals (Sweden)

    Pedro Caraballo Gracia

    2012-01-01

    Full Text Available Con el propósito de evaluar la participación de las bacterias heterotróficas en el flujo de carbono en la cadena trófica de un lago de inundación amazónico, colectas mensuales de estos microorganismos fueron realizadas durante el año hidrológico de diciembre de 2007 hasta noviembre de 2008, en las regiones litoral, pelágica y de macrófitas acuáticas del lago Catalão, en la Amazonia Central brasilera. Las bacterias fueron multiplicadas in vitro, usando como sustrato el carbono orgánico disuelto (COD del lago en cada una de las regiones estudiadas, para posterior análisis de la abundancia de isotopos estables de carbono y nitrógeno. Estos datos fueron confrontados con los valores de COD de los cuatro periodos limnológicos del lago (seca, inundación, llena y bajada de aguas. En general se encontró que la fuente principal de carbono de las bacterias heterotróficas fue aquella de origen C4, que presentó un aporte mínimo de 75%, en la medida en que el δ13C de las bacterias presentó valor medio de -17,72‰ ± 2,25. Confrontando ese valor, con el δ13C del zooplancton en el mismo período (-33,04‰±3,81 se concluye que el aporte de las bacterias heterotróficas al flujo de carbono hacia niveles tróficos superiores en el lago estudiado es mínimo.

  13. Assessment of the Regenerative Potential of Organic Waste Streams in Lagos Mega-City

    Science.gov (United States)

    Opejin, Adenike Kafayat

    There is never a better time for this study than now when Nigeria as a country is going through the worst time in power supply. In Lagos city about 12,000 tons of waste is generated daily, and is expected to increase as the city adds more population. The management of these waste has generated great concern among professionals, academia and government agencies. This study examined the regenerative management of organic waste, which accounts for about 45% of the total waste generated in Lagos. To do this, two management scenarios were developed: landfill methane to electricity and compost; and analyzed using data collected during field work and from government reports. While it is understood that landfilling waste is the least sustainable option, this study argued that it could be a viable method for developing countries. Using U.S EPA LandGEM and the IPCC model, estimates of capturable landfill methane gas was derived for three landfills studied. Furthermore, a 35-year projection of waste and landfill methane was done for three newly proposed landfills. Assumptions were made that these new landfills will be sanitary. It was established that an average of 919,480,928m3 methane gas could be captured to generate an average of 9,687,176 MW of electricity annually. This makes it a significant source of power supply to a city that suffers from incessant power outages. Analysis of composting organics in Lagos was also done using descriptive method. Although, it could be argued that composting is the most regenerative way of managing organics, but it has some problems associated with it. Earthcare Compost Company processes an average of 600 tons of organics on a daily basis. The fraction of waste processed is infinitesimal compared to the rate of waste generated. One major issue identified in this study as an obstacle to extensive use of this method is the marketability of compost. The study therefore suggests that government should focus on getting the best out of the

  14. Vestibular disorders among adults in a tertiary hospital in Lagos, Nigeria.

    Science.gov (United States)

    Somefun, O A; Giwa, O S; Bamgboye, B A; Okeke-Igbokwe, I Irene; Azeez, A A Abdul

    2010-10-01

    Dizziness is not an uncommon complaint in the Otolaryngological clinics among other symptoms. To a large number of practitioners, the treatment of dizziness remains the same irrespective of the etiology, i.e., anti-vertiginous drugs. The objective of this study was to document the evaluation, causes and treatment of vestibular disorders among our patients. The design includes descriptive prospective study conducted in the Oto-rhino-laryngology and Orthopedic Clinics of Lagos University Teaching Hospital, Lagos and Nigerian Army Audiological Centre, 68 Nigerian Army Reference Hospital, Yaba, Lagos, Nigeria. Adult patients referred to the audiology clinic for dizziness had detailed history obtained by using structured questionnaire. General physical and neuro-otological examinations were done. Clinical diagnoses were made on standardized criteria. The patients had hearing evaluation, videonystagmography (VNG) evaluation using infrared videonystagmography system. X-ray of the cervical spine and computerized tomogram scan of internal auditory meatus and brain when indicated were done. A total of 102 patients were seen with age range between 21 and 90 years. Thirty patients (29.4%) recorded average duration of episode of vertiginous attacks in seconds, 69 (67.6%) recorded within minutes to hours and 3 (2.9%) with no definite pattern. Clinical signs on neuro-otological examination were elicited on 39 (38.2%) of the patients while on VNG the vestibular subtest mainly caloric test was abnormal unilaterally and bilaterally in 47 (46.1%) while with the oculomotor subtests, smooth pursuit tests were abnormal in 5 (6.9%), saccade tests were abnormal in 8 (7.8%) and OPK were abnormal in 9 (8.8%). Peripheral vestibular disorders are common of which benign paroxysmal positional vertigo (BPPV) was seen in 29 (28.4%), Meniere's disease in 22 (21.6%), recurrent vestibulopathy in 20 (19.6%), cervical vertigo in 18 (17.6%), psychogenic vertigo in 2 (2%), vestibular schwannoma

  15. Malarone treatment failure and in vitro confirmation of resistance of Plasmodium falciparum isolate from Lagos, Nigeria

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    Warhurst David C

    2002-02-01

    Full Text Available Abstract We report the first in vitro and genetic confirmation of Malarone® (GlaxoSmithKline; atovaquone and proguanil hydrochloride resistance in Plasmodium falciparum acquired in Africa. On presenting with malaria two weeks after returning from a 4-week visit to Lagos, Nigeria without prophylaxis, a male patient was given a standard 3-day treatment course of Malarone®. Twenty-eight days later the parasitaemia recrudesced. Parasites were cultured from the blood and the isolate (NGATV01 was shown to be resistant to atovaquone and the antifolate pyrimethamine. The cytochrome b gene of isolate NGATV01 showed a single mutation, Tyr268Asn which has not been seen previously.

  16. An Evaluation of Industrial Facilities Defects in Selected Industrial Estates in Lagos State, Nigeria

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    Oseghale, G.E.

    2014-01-01

    Full Text Available The study appraised the state of industrial facilities in selected industrial estates established between 1957 and 1981 in Lagos State by examining the nature and causes of facilities’ defects in the selected industrial estates. The buildings sampled were load bearing sandcrete block wall (1%, concrete framed structure (83% and steel framed structure (16%. Data were sourced using structured questionnaire administered on the staff of maintenance department of 35 building materials and plastic manufacturing industries purposively selected and located in 18 industrial estates. Data obtained were analyzed using descriptive statistic. The study found the structural elements of the buildings, i.e. foundations, beams, walls, and floors satisfactory. Using the mean response analysis, the result showed that the most severe factors responsible for industrial facilities’ defects were combined effects of geo-climatic factors (2.35, combined effects of biological agencies (2.15, corrosion (1.98, and physical aggression on the facilities (1.71.

  17. The understanding and acceptability of assisted reproductive technology (ART) among infertile women in urban Lagos, Nigeria.

    Science.gov (United States)

    Fabamwo, A O; Akinola, O I

    2013-01-01

    This descriptive study was carried out to assess the awareness and acceptability of Assisted Reproductive Technology (ART) among infertile women in Lagos, Nigeria. Self-administered questionnaires on the knowledge of ART in the women were used. After a brief exposé on ART, questions relating to their attitude were answered. A total of 166 women were studied. Only 51.8% had any knowledge of ART and most of these had poor knowledge. A total of 137 women would embrace ART if offered but 29 would not, for reasons such as religion, fear of side-effects, failure and unaffordable costs. There is a paucity of good knowledge of ART. A significant number of the women would consider ART if offered. There is thus a need to create more awareness about the possibilities offered by ART, as well as instituting low cost ART strategies in developing world countries.

  18. Design of a residential microgrid in Lagos del Cacique, Bucaramanga, Colombia

    Science.gov (United States)

    Bellon, D.; González Estrada, O. A.; Martínez, A.

    2017-12-01

    In this paper is presented a model that analyses the options to provide energy to an interconnected house in Lagos del Cacique, Bucaramanga, Colombia. Three power supplies were considered: photovoltaic, 1 kW wind turbine, and a 2.6kW gasoline generator, as well as a battery for energy storage. The variables considered for the sensitivity analysis correspond to the price of gasoline and the variation in loads. The simulation results suggest an optimal configuration of microgrids in generator-photovoltaic panel-battery. Sensitivity variables were specified in order to evaluate the effect of uncertainty. The simulation was done through the Homer software and the results of the combinations of sources are suggestions of the same.

  19. Radiological study of brackish and fresh water food samples in Lagos and Ondo states, southwestern Nigeria

    International Nuclear Information System (INIS)

    Ojo, T.J.; Ojo, O.C.

    2007-01-01

    Measurement of the average radioactivity concentration in brackish and fresh water food samples in Lagos and Ondo States of Nigeria was carried out using a very sensitive gamma spectroscopic system consisting of a 76 mm x 76 mm Nal (TI) scintillation detector coupled to a computerized ACCUSPEC installation. All the radionuclide detected are traceable to the naturally occurring 4 ''0K and ''2''3''2Th. The average concentrations of ''2''3''8U and ''2''3''2Th were found to be higher in brackish water food samples, 50.92±7.04 Bq/kg and 24.60± 6.47 Bq/kg respectively. The average concentration of ''4''0K was found to be higher in food samples got from freshwater, 738.94±84.81Bq/kg

  20. Sedimentation survey of Lago Loíza, Trujillo Alto, Puerto Rico, July 2009

    Science.gov (United States)

    Soler-López, Luis R.; Licha-Soler, N.A.

    2014-01-01

    Lago Loíza is a reservoir formed at the confluence of Río Gurabo and Río Grande de Loíza in the municipality of Trujillo Alto in central Puerto Rico, about 10 kilometers (km) north of the town of Caguas, about 9 km northwest of Gurabo, and about 3 km south of Trujillo Alto (fig. 1). The Carraizo Dam is owned and operated by the Puerto Rico Aqueduct and Sewer Authority (PRASA), and was constructed in 1953 as a water-supply reservoir for the San Juan Metropolitan area. The dam is a concrete gravity structure that is located in a shallow valley and has a gently sloping left abutment and steep right abutment. Non-overflow sections flank the spillway section. Waterways include an intake structure for the pumping station and power plant, sluiceways, a trash sluice, and a spillway. The reservoir was built to provide a storage capacity of 26.8 million cubic meters (Mm3) of water at the maximum pool elevation of 41.14 meters (m) above mean sea level (msl) for the Sergio Cuevas Filtration Plant that serves the San Juan metropolitan area. The reservoir has a drainage area of 538 square kilometers (km2) and receives an annual mean rainfall that ranges from 1,600 to 5,000 millimeters per year (mm/yr). The principal streams that drain into Lago Loíza are the Río Grande de Loíza, Río Gurabo, and Río Cañas. Two other rivers, the Río Bairoa and Río Cagüitas, discharge into the Río Grande de Loíza just before it enters the reservoir. The combined mean annual runoff of the Río Grande de Loíza and the Río Gurabo for the 1960–2009 period of record is 323 Mm3. Flow from these streams constitutes about 89 percent of the total mean annual inflow of 364 Mm3 to the reservoir (U.S. Geological Survey, 2009). Detailed information about Lago Loíza reservoir structures, historical sediment accumulation, and a dredge conducted in 1999 are available in Soler-López and Gómez-Gómez (2005). During July 8–15, 2009, the U.S. Geological Survey (USGS) Caribbean Water Science

  1. Precious metal-bearing epithermal deposits in western Patagonia (NE Lago Fontana region), Argentina

    Science.gov (United States)

    Lanfranchini, Mabel Elena; Etcheverry, Ricardo Oscar; de Barrio, Raúl Ernesto; Recio Hernández, Clemente

    2013-04-01

    Precious metal-bearing quartz veins occur at the northeastern sector of the Lago Fontana region in southwestern Argentina, within the context of the Andean continental magmatic arc environment. The deposits and their associated alteration zones are spatially related to a Cretaceous calc-alkaline magmatism represented by silicic dikes and hypabyssal intrusions, and hosted by a Late Jurassic to Cretaceous volcano-sedimentary sequence. The veins and related veinlets crop out discontinuously, in general terms in a NW-SE belt. The primary vein mineral assemblage is composed mostly of pyrite ± galena ± chalcopyrite > hematite ± arsenopyrite in silica gangue minerals. Chemical analyses of grab samples from selected quartz veins show as much as 5.7 ppm Au and 224 ppm Ag, as well as elevated Pb, Cu, and Zn. Hydrothermal fluids caused an innermost silicification and adularia-sericite alteration assemblage, and an external propylitic halo. Sulfur isotope values measured for sulfides (δSS from -1.90 to +1.56‰), and oxygen and hydrogen isotopes measured on quartz crystals and extracted primary fluid inclusion waters (δOO = -2.85 to +5.40‰; δDO = -106.0 to -103.4‰) indicate that mineralization probably formed from magmatic fluids, which were mixed with meteoric waters. Also, fluid inclusion data from quartz veins point out that these fluids had low salinity (1.7-4.2 wt% NaCl equiv.), and temperatures of homogenization between 180 and 325 °C. Mineralogical, petrographic and geochemical features for mineralized surface exposures indicate a typical adularia-sericite, low sulfidation epithermal system in the Lago Fontana area that represents a promising target for further exploration programs.

  2. CLUSTERING AND THE NATURE OF RELATIONSHIP AMONGST FIRMS IN THE LAGOS REGION, NIGERIA

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    FAGBOHUNKA Adejompo

    2015-06-01

    Full Text Available Regional cluster, a geographically bounded concentration of interdependent firms, is the best environment to fostering a strong relationship amongst firms which can lead to amazing technological and industrial expansion. This paper underscores clustering and the resultant nature of relationship amongst firms, using the Lagos region as a case study. One hundred and three questionnaire were administered in twelve industrial estates; one questionnaire in each of the firm. This connotes that all the firms in the industrial estates were successfully covered in the questionnaire administration, which was administered. A descriptive statistical analytical technique was adopted. The paper has reveals the types of working relationship amongst firms in the Lagos region which includes; raw materials purchase, subcontract, collaboration in research and development, sales promotion, transportation, power supply, water supply, security, waste treatment, telecommunication, ports and shipping as well as labour supply. The paper found out that raw materials purchase/supply was more striking amongst the working relationship types. Also, the paper has revealed services sharing amongst the firms and transport as the most dominant. The most important location advantage was the market facilities. The analysis of variance carried out in relation to variation in clustering amongst the firms at 0.05% level was significant. The paper concluded that industrial cluster if encouraged, will lead to increase working relationship, which in turn have the capability of boosting, promoting and encouraging economies of clustering. Cluster concepts spatially emphasize inter-firm relations that facilitate innovative activity, which is recognized as a driving force of sustained economic growth. It is therefore recommended that these clustering of firms should be made viable, encouraged and strengthened through government investment in the industrial sector, making the location

  3. Contraception among bankers in an urban community in Lagos State, Nigeria.

    Science.gov (United States)

    Meka, Ijeoma Angela; Okwara, Emmanuel Chidiebere; Meka, Anthony Obiamaka

    2013-01-01

    Contraception means procedures employed to interfere at one stage or the other with the normal sequence of events in the process of reproduction leading to a failure in conception. It means voluntary techniques adopted to achieve birth control. Its use remains sensitive worldwide. Within the same society, contraception varies amongst people of different socio-cultural, educational, religious, or occupational affiliations. It also varies between urban and rural settlements. Some contraceptive techniques also prevent sexually transmitted infections (STIs). The prevalence of STIs also varies with these same factors. There is very limited literature on contraception exclusively amongst bankers. We sought to investigate the level of awareness and practice of contraception amongst bankers in an urban society in Lagos State, Nigeria. In this descriptive cross-sectional study, 200 self-administered structured questionnaires were retrieved from bankers from 5 banks selected by simple random sampling in Surulere Local Government Area of Lagos State, Nigeria. Data was subsequently statistically analyzed using SPSS. The age range was 21-45 years, mean 28.8±1.4 years, 51.7% were males (72% single, 27% married, 1% separated) and 48.3% were females (52.4% single, 47.6% married). All (100%) respondents were aware of contraception, 93.3% males and 91.7% females were sexually active, 88.9% males and 84.5% females believe contraception is useful. Most (71.4%) respondents practice contraception, males (81%) being more than females (61.1%), p males believe that contraception prevents pregnancy but not STIs, 28.6% of females and 46.6% of males believe it prevents both pregnancy and STIs, whereas 14% of males and no female believe contraception prevents STIs but not pregnancy. The awareness of and practice of contraception was very high among the bankers but more male bankers practice contraception whereas more female bankers perceive contraceptives to be for the married only.

  4. Assessment of Cost Variation in Solid and Hollow Floor Construction in Lagos State

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    Oluwaseun Sunday Dosumu

    2013-12-01

    Full Text Available The differences in construction methods between different forms of slabs construction tend to result into variation in the cost of the slabs for any building project. Thus, this study aims at assessing the variation in construction cost among various construction methods available for hollow and solid floors in construction projects within Lagos State. The research design for this study was a survey design approach and the population of the study are active professionals (Architects, Civil Engineers, Builders, Quantity Surveyors, Consultant and contractors because they are the major participants in the construction activities of the construction industry in Lagos State, Nigeria. The research is based on 46 returned questionnaires out of the 60 that was administered. The data from the questionnaires were analyzed using descriptive tools such as frequencies, percentage and mean values. The hypotheses were tested with paired sample t-test and it was found that the system or method of slab construction well known to the respondents is cast in situ, precast and semi-precast. The study also shows that the cost of in-situ solid slabs are higher than that of hollow slab which is an indication that solid slab construction is more expensive than hollow slab construction provided the hollow slab is a one-way hollow floor and not waffle floor. In pre cast solid slab construction the cost of transportation of units to sites, cost of expertise required in the construction process and the cost of fabrication off site are the three highest and most expensive aspects of precast solid slab while cost of erection and placement and the cost of grouting and topping if required are less expensive. Therefore there is difference in the cost of construction between the solid and hollow slabs but the difference is not appreciable. The study's major recommendation is that, adequate and careful analysis must be done in the choice of floor system being adopted for any

  5. Toxoplasma gondii infection: seroprevalence and associated risk factors among primary schoolchildren in Lagos City, Southern Nigeria

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    Vincent Pam Gyang

    2015-02-01

    Full Text Available INTRODUCTION: Toxoplasma gondii infection has been described as the most widespread zoonotic infection of humans and other animals. Information concerning T. gondii infection among schoolchildren is unavailable in Lagos City, Nigeria. METHODS: This cross-sectional study investigated the seroprevalence and risk factors associated with T. gondii infection among primary schoolchildren (PSC from a community located in the center of Lagos, southern Nigeria, from November 2013 to March 2014. A total of 382 PSC were screened for the presence of sera anti-T. gondii antibodies using a latex agglutination test (TOXO Test-MT, Tokyo, Japan. A cutoff titer of ≥ 1:32 was considered positive, while titers ≥ 1:1,024 indicated high responders. Questionnaires were also used to obtain data on possible risk factors from parents/guardians. RESULTS: The overall seroprevalence was 24% (91/382, and 83.5% (76/91 of seropositive PSC were classified as high responders. Among the risk factors tested, including contact with cats and soil, consumption of raw meat and vegetables, and drinking unboiled water, none showed statistical significance after multivariate adjustment. No associations were observed among age, gender, body mass index (BMI, and parents' occupation/educational level. CONCLUSIONS: The findings in this study show evidence of active infection, and hence, there is need for urgent preventive measures in this city. Further investigation is required to clarify the transmission routes. Policy makers also need to initiate prevention and control programs to protect pregnant women and immunocompromised patients in particular because they are more severely affected by T. gondii infection.

  6. Evaluation of Energy Use in Public Housing in Lagos, Nigeria: Prospects for Renewable Energy Sources

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    Isidore Chukwunweike Ezema

    2016-02-01

    Full Text Available Even though domestic energy can be from either renewable or non-renewable sources, the former is preferred because of its role in reducing both the operational energy intensity and carbon footprint. Given the positive role renewable energy plays in the energy mix, this paper examined the pattern of operational energy use with particular reference to the renewable and non-renewable energy content in medium and high density public residential buildings in Lagos, Nigeria. A survey research method was adopted for primary data collection while data analysis was by descriptive statistics. The study found that renewable energy use in the residential units is very low. In contrast, there was high dependence of the occupants on non-renewable direct fuel combustion through the use of fossil fuel-driven privately-owned electricity generators for electricity supply as a result of the inadequate supply from the national grid. In addition to the relatively high operational energy intensity observed in the studied buildings, the findings have implications for the safety, health and wellbeing of the building occupants as well as for carbon emissions from the buildings and for overall environmental sustainability. Recommendations to increase renewable energy use in new buildings and as retrofits in existing buildings were made. Article History: Received Oct 18, 2015; Received in revised form January 14, 2016; Accepted January 30, 2016; Available online How to Cite This Article: Ezema, I.C., Olotuah, A.O., and Fagbenle, O.I, S. (2016 Evaluation of Energy Use in Public Housing in Lagos, Nigeria: Prospects for Renewable Energy Sources. Int. Journal of Renewable Energy Development, 5(1,15-24. http://dx.doi.org/10.14710/ijred.5.1.15-24 

  7. Histopathological report of colorectal carcinoma resections: A 5-year audit in Lagos.

    Science.gov (United States)

    Badmos, Kabir Bolarinwa; Rotimi, Olorunda; Lawal, Abdulrazzaq Oluwagbemiga; Osinowo, Adedapo O; Habeebu, Mohammed Y; Abdulkareem, Fatimah Biade

    2018-01-01

    Complete and accurate pathology reporting of colorectal carcinoma (CRC) resection specimen is critical to clinical management of individual patients. The study aims to audit colorectal cancer histopathology reporting in Lagos between 2011 and 2015 before the adoption of the Society for Gastroenterology and Hepatology in Nigeria pro forma in 2016. All resected CRC cases were identified from the Histopathology record of our Department and that of a private Laboratory in Lagos over a 5-year from 2011 to 2015. The dataset as contained in the pro forma was extracted from the reports and analysed using SPSS version 16 software. A total of 92 colorectal resections were received during the 5-year period consisting of 90 colonic and 2 rectal tumours. Data inclusiveness on tumour differentiation, extent of primary tumour, total lymph node and lymph node involvement were 96.7%, 91.3%, 83.7% and 92.4%, respectively. Tumour perforation, level of venous involvement and distant metastasis were reported in 73.9%, 21.7% and 96.7% respectively. The circumferential resection margin (CRM) in the 2 rectal tumours had 100% inclusiveness. Tumour node metastasis staging was complete in 87% of cases while Dukes staging was documented in 8.7% of the reports. None of the data items was 100% complete except the CRM for rectal carcinoma. Free text reporting results in incomplete data resulting in improper staging, especially the lymph node status. This highlights the need for pro forma reporting to ensure and maintain consistent reporting of important parameters required for proper staging and management of patients with colorectal cancer.

  8. A Science Centre as a Geoturism promoter - the Lagos Ciência Viva examples (Portugal).

    Science.gov (United States)

    Azevedo Rodrigues, Luis; Leote, Catarina

    2017-04-01

    Science outreach and engagement are crucial core objectives of the Lagos Ciência Viva Science Centre (CCVL). By engaging audiences in the real world a link is made between their science centre experience and the environment in which they live. Therefore, it has been an option of the CCVL to offer geological outdoor activities, both in the natural environment and urban context. Dinosaurs are an appealing science subject for both students and tourists. Thus, the CCVL has a long tradition in organizing and guiding field trips to two dinosaur track sites - Salema and Santa beaches (Vila do Bispo, southwest Algarve). These sites, both from the Lower Cretaceous reveal at least two types of tracks - theropod and iguanodontian footprints. Often in combination with the paleontology field trips, the CCVL also offers different geological field trips both for formal (school) and informal (tourism) education. This allows students and tourists to be introduced to dinosaur paleobiology and ichnology and to the structural geology and stratigraphy of the area. Our science outreach is being further developed by contractual agreement with a regional tour operator, in which the CCVL is responsible for the scientific content and guidance of the visits. Aiming at an urban context, the CCVL produced three Urban Geology and Paleontology Guide Books for three Algarve cities (Lagos, Faro and Tavira), which can be acquired in the three Ciência Viva Science Centres shops as well as in the tourist information offices serving this way as a basis for guided urban tours also offered by the CCVL. Based on our experience, we review and contextualise these geoscience activities and their potential for science outreach, communication and tourism. We discuss and propose a classification of different possibilities in geoscience communication and outreach based on three vertices: Science, Heritage and Geotourism. Some particularities of these visits, such as the merge between geosciences and other

  9. COMPORTAMIENTO DE LA ACTIVIDAD ENZIMÁTICA DEL SUELO AL APLICAR MUCÍLAGO DE NOPAL (Opuntia spp.

    Directory of Open Access Journals (Sweden)

    Julio Cesar Muñoz Bojorges

    2015-04-01

    Full Text Available El mucílago de nopal contiene polisacáridos que pueden influir en la actividad enzimática del suelo. Se emplearon dos suelos, arenoso (63% y arcilloso (67%, donde se probaron tres dosis de mucílago de nopal; T80 20, T40-60, T10-90 (porcentaje de mucílago-agua, más el testigo solo con agua. Los tratamientos se colocaron en una cámara de ambiente controlado a 25 ºC y humedad de 40%. Se tomaron muestras a los 7, 14 y 21 días, después de aplicado el mucílago. Se valoró la actividad de las enzimas: amilasa, celulasa, lipasa e invertasa, que participan en el ciclo del carbono para saber como afecta el mucílago de nopal en ellas. A los 21 días en el suelo arcilloso, con el tratamiento T80-20 hubo mayor actividad de: amilasa (91 mg de azúcares reductores 10 g 1 de materia seca 24 h-1, lipasa (133.33 nM de 4 metil umbeliferona g 1 de materia seca 24 h-1 e invertasa (5.53 mg de glucosa 10 g-1 de materia seca 24 h-1, y la celulasa en el T40-60 presentó la mayor actividad (72.66 µg de glucosa g-1 de materia seca 24 h 1. En el suelo arenoso a los 21 días, el T80-20 fue el que presentó mayor actividad lipasa (60.66 nM de 4 metil umbeliferona g-1 de materia seca 24 h-1, el T40 60: invertasa (1.86 mg de glucosa 10 g-1 de materia seca 24 h-1 y celulasa (33.66 µg de glucosa g 1de materia seca 24 h-1, y el T10-90 amilasa (43.66 mg de azúcares reductores 10 g-1 de materia seca 24 h-1. El mucílago de nopal incrementó la actividad enzimática (amilasa, celulasa, lipasa e invertasa en los dos tipos de suelo.

  10. Escenarios de erosión bajo diferentes manejos agrícolas en la cuenca del lago de Zirahuén, Michoacán, México

    OpenAIRE

    Manuel E. Mendoza Cantú; Miguel Bravo Espinosa; Lenin E. Medina Orozco

    2009-01-01

    La erosión hídrica, la desecación y pérdida de áreas y volúmenes de los lagos son problemas severos en las cuencas cerradas del Sistema Volcánico Transversal. Este deterioro comienza a extenderse a la cuenca del lago de Zirahuén, Michoacán, en la cual se encuentra uno de los pocos lagos mexicanos de aguas casi prístinas; por ello, es urgente plantear estudios que ofrezcan bases para un manejo sostenible de los recursos naturales que beneficie a los distintos usuarios del lago y de la cuenc...

  11. Ambient air particulate matter in Lagos, Nigeria: a study using receptor modeling with x-ray flourescence analysis

    Directory of Open Access Journals (Sweden)

    E.A. Oluyemi

    2001-12-01

    Full Text Available The need for comprehensive air pollution studies in Lagos cannot be overemphasized in view of the level of industrialization of the city and its nearness to the ocean. Air particulate samples collected with a high-volume air sampler at three locations in Lagos, Nigeria were analyzed by the combination of wavelength-dispersive X-ray fluorescence and atomic absorption spectroscopy methods. Elemental concentrations were subjected to factor analysis for source identification and chemical mass balance model was used for source apportionment. Prominent among sources identified with the ranges of their contributions at the sites are: soil 35-54%, marine 26-34%, automobile exhaust 0.3-3.5%, refuse incineration 2-3%, and regional sulphate 2-12%.

  12. Testing freshwater Lago Mare dispersal theory on the phylogeny relationships of iberian cyprinid genera Chondrostoma and Squalius (Cypriniformes, Cyprinidae

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    Carmona, José Ambrosio

    2003-12-01

    Full Text Available A phylogeny of the species in the genera Chondrostoma and Squalius was constructed based on the complete mitochondrial cytochrome b gene (1140pb. The molecular phylogeny was used to test the effect of the Mediterranean Lago Mare dispersal theory on the processes of divergence and speciation of European freshwater fishes. Phylogenetic relationships among Squalius samples and the molecular clock revealed that the ancestor of the current Iberian Squalius species inhabited a wide geographic area in the central and southwestern part of the former Iberian Peninsula during the Miocene before the Lago Mare phase. Similarly, the four main Iberian lineages of the genus Chondrostoma originated in the Middle-Upper Miocene. Hence, the Lago Mare phase of the Mediterranean Sea seems to have been a too recent paleogeographic event to have had any major impact on the dispersion of Squalius and Chondrostoma species. However, the reduction of the water-bodies during the Tortonian and Messinian may have intensified the isolation of populations. The Operational Biogeographic Units recovered from the Squalius and Chondrostoma phylogenies also reject the Lago Mare dispersal theory and support the idea that the differentiation processes were due to both the formation of the current hydrographical basin during the Plio-Pleistocene as well as to an earlier endorrheism event that occurred prior to hydrographical configuration.Realizamos una filogenia de los géneros Chondrostoma y Squalius mediante el estudio de la secuencia completa del gen mitocondrial citocromo b (1140pb. La filogenia molecular fue usada para comprobar el efecto que la teoría de dispersión del Mediterráneo Lago Mare ha tenido sobre los procesos de divergencia y especiación en los peces de agua dulce europeos. Las relaciones filogenéticas entre las muestras de Squalius y la aplicación del reloj molecular pusieron de manifiesto que el ancestro de las actuales especies ibéricas de Squalius habitaba

  13. INDICADORES FISICOQUÍMICOS Y BIOLÓGICOS DEL PROCESO DE EUTROFIZACIÓN DEL LAGO TITIKAKA (BOLIVIA)

    OpenAIRE

    Fontúrbel Rada, Francisco; Departamento de postgrado, Maestría en Ingeniería de medio ambiente y recursos naturales, Universidad Loyola (Bolivia).

    2016-01-01

    Se evaluó el grado de avance del proceso de eutrofización del lago Titikaka por medio de la evaluación de las macrófitas (pleuston y limnófitas), de la diversidad de fitoplancton, de parámetros fisicoquímicos (pH, turbidez, DBO5, nitrógeno total y fósforo soluble) y microbiológicos (coliformes fecales termotolerantes) en cuatro localidades del lago. Los resultados mostraron un avance diferencial en el desarrollo del proceso de eutrofización en cada sitio: se clasificó un sitio como aguas de c...

  14. Spatial and temporal distribution of dragonflies naiads in wetlands La Vaca and Santa Maria del Lago, Bogota, Colombia

    International Nuclear Information System (INIS)

    Moreno Pallares, Maria Ines; Guillot Monroy, Gabriel Hernando

    2012-01-01

    We evaluated the spatial and temporal variation in communities of dragonfly's naiads and their association to the habitat rehabilitation status in La Vaca and Santa Maria del Lago wetlands. Four samplings were carried out in several sites of each during a year. Macroinvertebrates were collected at the entry and exit flow, and in open waters of the wetlands using standard techniques. We found a gradient in the distribution of the abundance of nymphs in both wetlands, where naiads community had the highest number of individuals in the places located farther from the dumping sites. Comparing the community s composition between wetlands La Vaca and Santa Maria del Lago through the beta diversity, heterogeneity was found in both ecosystems. The gradient in the distribution of the abundance of naiads observed in both wetlands fits with to a response of the species in terms of tolerance to the environmental variables.

  15. Las macrófitas de algunos lagos alto-andinos del Ecuador y su bajo potencial como bioindicadores de eutrofización

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    Benjamin Kiersch

    2004-12-01

    Full Text Available Se estudió la presencia de macrófitas en tres lagos de altoandinos en Ecuador,Lago San Pablo,Laguna La Mica y Lago Cuicocha.Los primeros dos son eutróficos, mientras que el último es un lago de caldera extremadamente oligotrófico.Las especies dominantes en los lagos eutróficos son:Ceratophyllum demersum , Myriophyllum quitense ,Potamogeton illinoensis ,P. striatus y Elodea matthewsii .En el lago oligotrófico están presentes P.pectinatus,P.illinoensi s,y las Characeae Chara rusbyabana ,Ch.globularis y Nitella acuminata .La máxima profundidad para la presencia de macrófitas puede ser usada como un indicador del estado de eutroficación,la cual va desde 5 m en la Laguna Mica a 35 m en el Lago Cuicocha.El valor de la bioindicación de las especies de macrófitas en estos lagos altoandinos es bajo,debido a que solo unas pocas especies están presentes,y algunas de ellas no son específicas para las condiciones ambientales.Macrophytes from some high Andean lakes of Ecuador and their low potential as bioindicators of eutrophication .The occurrence of macrophyte in three high Andean lakes of Ecuador,Lago San Pablo, Laguna La Mica and Lago Cuicocha was recorded in 5-9 transects per lake.The first two lakes are eutrophic, the third is an extremely oligotrophic caldera lake.The dominant species in eutrophic lakes are Ceratophyllum demersum ,Myriophyllum quitense ,Potamogeton illinoensis ,P.striatus and Elodea matthewsii .In the oligotrophic lake P.pectinatus,P.illinoensi s,and the Characeae Chara rusbyana ,Ch.globularis and Nitella acuminata occur.The maximum depth of the macrophyte ’s presence can be used as an indicator of the trophic state,ranging from about 5 m in Mica to 35 m in Cuicocha.The bioindication value of the macrophyte species in these high Andean lakes is low,because few species occur and because some of them are not specific to environmental conditions.Rev.Biol.Trop.52(4:829-837.Epub 2005 Jun 24.

  16. Feeding of juvenile pirarucu (Arapaima gigas, Arapaimidae in their natural environment, lago Quatro Bocas, Araguaiana-MT, Brazil

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    Valdézio de Oliveira

    Full Text Available The stomach content of samples of juvenile Arapaima gigas was analized to obtain information about feeding in natural environments. This species occurs in the Amazonian basin, predominantly in floodplain environment. This is the case of the valley of the middle rio Araguaia, where the lago Quatro Bocas is situated. Juveniles A. gigas prefered insects, microcrustaceans and gastropods, most of autochthonous origin. All the stomachs examined contained at least one food item.

  17. One World, One Health, One Medicine: An Assessment of Intersectoral Collaboration in Avian Influenza Control in Lagos State

    OpenAIRE

    Aman-Oloniyo, Abimbola; Allison, Olalekan; Razaq, Musbau A.

    2013-01-01

    Objective To assess the collaborative efforts in Avian Influenza control that could be harnessed for the control of other Zoonotic diseases. Introduction The livestock sector is vital to the socio-economic development of Nigeria; it contributes about 9?10% of agricultural GDP. Livestock represents an important source of high quality animal protein providing about 36.5 % of total protein intake of Nigerians (1). Lagos State, located in the south-western part of Nigeria, has the smallest landma...

  18. DETERMINACIÓN ESPACIO-TEMPORAL DE LA CONCENTRACIÓN DE FÓSFORO EN EL LAGO DE TOTA

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    Rubén Coredero

    2008-03-01

    Full Text Available Durante los meses de julio a noviembre del año 2003 se llevó a cabo el estudio sobre la determinación espacio-temporal de la concentración de fósforo en el Lago de Tota (Boyacá, Colombia. Las muestras se tomaron con la botella Van-Dorn tipo horizontal de dos litros de capacidad en el estrato superficial hasta 20 cm en la columna de agua y a 10 m de profundidad. Las distintas formas de fósforo estudiadas demuestran que existen diferencias significativas en sus concentraciones; los mayores valores se encontraron en el sector denominado Lago Chico y los menores en el área de Lago Grande; este comportamiento se encuentra muy asociado con los usos agrícolas del suelo en la zona litoral y con los factores climáticos, especialmente la precipitación en el área de estudio.

  19. Hepatic pathologies in the brackish water catfish (Chrysichthys nigrodigitatus) from contaminated locations of the Lagos lagoon complex

    Science.gov (United States)

    Olarinmoye, O.; Taiwo, V.; Clarke, E.; Kumolu-Johnson, C.; Aderinola, O.; Adekunbi, F.

    2010-01-01

    Several toxicological studies into the effects of aquatic pollutants on the liver of teleost fish exist in literature. The focus on the liver in these studies is predicated on its central nature in the scheme of biotransformation and excretion of xenobiotics following exposure in polluted water bodies. As a consequence of the latter primary role of the liver in these processes it is regarded as a predilective site for the sub lethal effects of xenobiotics on the organism usually detectable at histological level. Hepatic histopathology recorded in livers from feral populations of the brackish water catfish Chrysichthys nigrodigitatus from locations on the Lagos lagoon complex with significant anthropogenic inputs from denizen populations and industries are presented. Liver sections from sixty specimens from two locations on the Lagos lagoon complex (Badagry lagoon: 6??24'N, 2??56'E; and Lagos lagoon: 6??29'N, 3??22'E) were analysed. Observed pathologies included hydropic degeneration (58%), portal / sinusoidal congestion (33%), hepatic necrosis (26%), hemosiderosis (12%) and foci of cellular alterations (FCA's). No obvious oncologic features were observed; the presence of the hydropic Vacuolation lesion was taken as prelude to the development of neoplasms and discussed as such. ?? 2009, Penkala Bt., Budapest, Hungary.

  20. Mentoring and Succession of Administrators: Critical Issues in Public and Private Secondary Schools in Lagos State, Nigeria

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    S.A. Oladipo

    2016-08-01

    Full Text Available Studies have shown that the quality of outcome in Nigerian secondary schools is declining at an alarming rate due to shortage of required resources as well as leadership challenges. The challenges have been observed to be as a result of lack of mentoring which is not a common practice in school management in Nigeria. Consequently, this study investigated the extent to which mentoring as a strategy for administrators' succession plan impacts on the performance of their duties in public and private secondary schools in Lagos, Nigeria. The study adopted the descriptive survey design and administered a 25-item self-constructed questionnaire on participants. A total of 530 participants were randomly selected from the population of 4,350 senior teachers. The Participants were drawn from 145 secondary schools (91 public and 54 registered private in Education District IV of Lagos State. The findings showed that mentoring has significant impact on administrators' succession planning and that succession planning does not significantly differ in public and private secondary schools in Lagos State. The study concluded that leadership development is a critical factor in secondary school effectiveness and efficiency. Therefore, serving administrators as well as prospective administrators should be regularly evaluated to determine their training needs at different career stages. There should also be mentoring related policies to enhance the managerial skills, sense of competence and effectiveness of the prospective administrators.

  1. Dieta de murciélagos nectarívoros del Parque Nacional Cerros de Amotape, Tumbes

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    Edith Arias

    2011-07-01

    Full Text Available En el Perú se reporta la presencia de 18 especies de murciélagos nectarívoros, sin embargo se cuenta con poca información sobre la dieta de estas especies. En este estudio se reporta por primera vez la dieta de los nectarívoros Glossophaga soricina, Lonchophylla hesperia y Anoura geoffroyi en el bosque seco ecuatorial y del bosque tropical del Pacífico del Parque Nacional Cerros de Amotape, Tumbes. Analizamos 21 contenidos gastrointestinales e identificamos ocho morfotipos de polen pertenecientes a las familias Bombacaceae, Cactaceae, Fabaceae, Solanaceae, Rubiaceae, Myrtaceae, Malvaceae y Rosaceae. Encontramos evidencia del síndrome de quiropterofilia en Bombacaceae, Cactaceae, Fabaceae, Solanaceae y Rubiaceae. Observamos que A. geoffroyi consume polen de Ceiba trichistandra, Solanaceae y Rubiacea; G. soricina consume de Abutilon reflexum, Armathocereus cartwrightianus, C. trichistandra y Rubiaceae; y L. hesperia de A. cartwrightianus, Eriobotrya japonica, Fabaceae y Psidium sp.; sugiriendo una dieta generalista en estas especies. Los murciélagos G. soricina y A. geoffroyi comparten el consumo del ceibo C. trichistandra y de la Rubiaceae, mientras que G. soricina comparte con L. hesperia el consumo del cactus A. cartwrightianus. Los otros morfotipos de polen no fueron compartidos entre murciélagos. Se encuentra además que el ceibo C. trichistandra fue la especie más consumida, especialmente por G. soricina.

  2. Characteristics and risk factors of preterm births in a tertiary center in Lagos, Nigeria.

    Science.gov (United States)

    Butali, Azeez; Ezeaka, Chinyere; Ekhaguere, Osayame; Weathers, Nancy; Ladd, Jenna; Fajolu, Iretiola; Esezobor, Christopher; Makwe, Christian; Odusanya, Bukola; Anorlu, Rose; Adeyemo, Wasiu; Iroha, Edna; Egri-Okwaji, Mathias; Adejumo, Prisca; Oyeneyin, Lawal; Abiodun, Moses; Badejoko, Bolaji; Ryckman, Kelli

    2016-01-01

    Preterm birth is a dire complication of pregnancy that poses huge long-term medical and financial burdens for affected children, their families, and the health care system. The aim of the present study was to identify characteristics associated with preterm births at the Lagos University Teaching Hospital (LUTH), Lagos, Nigeria from 2011 to 2013. We obtained Information from 5,561 maternal, fetal/neonatal and obstetric records from the labor ward. We excluded delivery at less than 22 weeks (0.25%), post-term birth at ≥42 weeks gestation (1.3%), and unknown gestation (1.4%). Additionally, we excluded records of multiple births (5.4%) and stillbirths (8.3%) leaving 4,691 records of singleton live-births for analysis. Logistic regression analysis was performed comparing preterm birth (22-36 weeks gestation) to term birth (37-41 weeks gestation). Multiple variable models adjusting for maternal age, parity, fetal position, delivery method and booking status were also evaluated. Multinomial regression was used to identify characteristics associated with preterm birth (PTB) defined as early PTB (22-31 weeks gestation), moderate PTB (32-34 weeks gestation), late PTB (35-36 weeks gestation), compared to term birth (37-41 completed weeks gestation). From our data, 16.8% of the singleton live-birth deliveries were preterm (PTBs. Older maternal age (≥35 years) [odds ratio (OR) = 1.41], hypertension (OR = 3.44) and rupture of membranes (OR = 4.03) were significantly associated with increased odds of PTB. Women being treated for the prevention of mother-to-child transmission of HIV were at a significantly decreased risk for PTB (OR = 0.70). Sixteen percent of women in this cohort were not registered for antenatal care in LUTH. These non-registered subjects had significantly greater odds of all categories of PTB, including early (odds ratio (OR) = 20.8), moderate (OR = 8.68), and late (OR = 2.15). PTB and risks for PTB remain high in Nigeria. We recommend that any high risk

  3. The LAGO Collaboration: Searching for high energy GRB emissions in Latin America

    Science.gov (United States)

    Barros, H.; Lago Collaboration

    2012-02-01

    During more than a decade Gamma Ray Bursts (GRB a cosmological phenomena of tremendous power) have been extensively studied in the keV - MeV energy range. However, the higher energy emission still remains a mystery. The Large Aperture GRB Observatory (L.A.G.O.) is an international collaboration started in 2005 aiming at a better understanding of the GRB by studying their emission at high energies (> 1 GeV), where the fluxes are low and measurements by satellites are difficult. This is done using the Single Particle Technique, by means of ground-based Water Cherenkov Detectors (WCD) at sites of high altitude. At those altitudes it is possible to detect air showers produced by high energy photons from the GRB, i. e. a higher rate of events on a short time scale, of the order of the second. The Pierre Auger Observatory could detect such GRB given its large number of detectors, but at 1400 m.a.s.l. the expected signal is quite small. At higher altitudes, similar performance is expected with only a very small number of WCD. As of 2011, high altitude WCD are in operation at Sierra Negra (Mexico, 4650 m.a.s.l.), Chacaltaya (Bolivia, 5200 m.a.s.l.), Maracapomacocha (Peru, 4200 m.a.s.l.), and new WCDs are being installed in Venezuela (Pico Espejo, 4750 m.a.s.l.), Argentina, Brazil, Chile, Colombia and Guatemala. Most of the new WCDs will not be at high enough altitude to detect GRB, never the less it will allow obtaining valuable measurements of secondaries at ground level, which are relevant for solar physics. The LAGO sensitivity to GRB is determined from simulations (under a sudden increase of 1 GeV - 1 TeV photons from a GRB) of the gamma initiated particle shower in the atmosphere and the WCD response to secondaries. We report on WDC calibration and operation at high altitude, GRB detectability, background rates, search for bursts in several months of preliminary data, as well as search for signals at ground level when satellite burst is reported, all these show the

  4. Identification and characterization of microsporidia from fecal samples of HIV-positive patients from Lagos, Nigeria.

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    Oladele Teslim Ojuromi

    Full Text Available BACKGROUND: Microsporidia are obligate intracellular parasites that infect a broad range of vertebrates and invertebrates. They have been increasingly recognized as human pathogens in AIDS patients, mainly associated with a life-threatening chronic diarrhea and systemic disease. However, to date the global epidemiology of human microsporidiosis is poorly understood, and recent data suggest that the incidence of these pathogens is much higher than previously reported and may represent a neglected etiological agent of more common diseases indeed in immunocompetent individuals. To contribute to the knowledge of microsporidia molecular epidemiology in HIV-positive patients in Nigeria, the authors tested stool samples proceeding from patients with and without diarrhea. METHODOLOGY/PRINCIPAL FINDINGS: Stool samples from 193 HIV-positive patients with and without diarrhea (67 and 126 respectively from Lagos (Nigeria were investigated for the presence of microsporidia and Cryptosporidium using Weber's Chromotrope-based stain, Kinyoun stain, IFAT and PCR. The Weber stain showed 45 fecal samples (23.3% with characteristic microsporidia spores, and a significant association of microsporidia with diarrhea was observed (O.R. = 18.2; CI: 95%. A similar result was obtained using Kinyoun stain, showing 44 (31,8% positive samples with structures morphologically compatible with Cryptosporidium sp, 14 (31.8% of them with infection mixed with microsporidia. The characterization of microsporidia species by IFAT and PCR allowed identification of Enterocytozoon bieneusi, Encephalitozoon intestinalis and E. cuniculi in 5, 2 and 1 samples respectively. The partial sequencing of the ITS region of the rRNA genes showed that the three isolates of E.bieneusi studied are included in Group I, one of which bears the genotype B. CONCLUSIONS/SIGNIFICANCE: To our knowledge, this is the first report of microsporidia characterization in fecal samples from HIV-positive patients from

  5. Cost implication of irrational prescribing of chloroquine in Lagos State general hospitals.

    Science.gov (United States)

    Aina, Bolajoko A; Tayo, Fola; Taylor, Ogori

    2008-02-01

    A major share of the hospital budget is spent on drugs. Irrational use of these drugs is a waste of financial and human resources that could have been deployed for another use within the hospital setting especially in cases where such drugs are provided free to patients. Also there is increased morbidity and progression of severity with irrational use. The objective of this study was to determine the irrational use of chloroquine and the subsequent cost implications in Lagos State general hospitals. A retrospective study period of one year (January to December, 2000) was selected. A total of 18,781 prescription forms of "Free Eko Malaria" were sampled for children and adults from all the Lagos State general hospitals. Drug costs in each prescription form were identified. Cost effectiveness analysis of chloroquine tablet and intramuscular injection was undertaken. The average cost of medicine per prescription was 132.071 ($1.03) which should have been 94.22 ($0.73) if prescribed rationally. The total cost of prescriptions for malaria under study was 2,480,425.00 ($19,348.09). About 68% {(1,679,444.00) ($13,100.19)} of the total cost was lost to irrational prescribing. This is a waste of scarce resources. When the prescriptions were differentiated into the different dosage forms prescribed, the prescriptions containing intramuscular injections only had over 90% of the cost lost to irrational prescribing. Cost effectiveness analysis showed that chloroquine tablet was 17 times more cost effective than chloroquine injection (intramuscular) from a health care system perspective while it was 14 times more cost effective from a patient perspective. There is waste of scarce resources with irrational dispensing of drugs and these resources could have been deployed to other uses or areas within the hospitals. The tablet chloroquine was more cost effective than injection chloroquine (intramuscular). Increasing the cost of tablets, decreasing effectiveness of tablets

  6. Potential health risks due to telecommunications radiofrequency radiation exposures in Lagos State Nigeria.

    Science.gov (United States)

    Aweda, M A; Ajekigbe, A T; Ibitoye, A Z; Evwhierhurhoma, B O; Eletu, O B

    2009-01-01

    The global system mobile telecommunications system (GSM) which was recently introduced in Nigeria is now being used by over 40 million people in Nigeria. The use of GSM is accompanied with exposure of the users to radiofrequency radiation (RFR), which if significant, may produce health hazards. This is the reason why many relevant national and international organizations recommended exposure limits to RFR and why it is made compulsory for GSM handsets to indicate the maximum power output as a guide to potential consumers. This study was conducted to measure the RFR output power densities (S) from the most commonly used GSM handsets used in Lagos State and compare with the limit recommended for safety assessment. Over 1100 most commonly used handsets of different makes and models as well as wireless phones were sampled and studied in all over the local government areas of the State. An RFR meter, Electrosmog from LESSEMF USA was used for the measurements. The handsets were assessed for health risks using the reference value of 9 Wm(-2) as recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The range of the S-values obtained varied from a minimum of 1.294 0.101 Wm(-2) with Siemens model R228 to a maximum of 16.813 +/- 0.094 Wm(-2) with Samsung model C140*. The results from wireless telephones showed very low S-values ranging from a minimum of 0.024 +/- 0.001 Wm(-2) with HUAWEI and ST CDMA 1 to a maximum of 0.093 +/- 0.002 Wm(-2) with HISENSE. The results showed that the population in Lagos State may be at risk due to significant RFR exposures resulting principally from the use of GSM. Quite a number of handsets emit power above the ICNIRP recommended value. Measured RFR power close to Radio and Television masts and transmitters are within tolerable limits in most cases, only that the public should not reside or work close to RFR installations. Phone calls with GSM should be restricted to essential ones while youths and children

  7. Food hygiene behaviour and childhood diarrhoea in Lagos, Nigeria: a case-control study.

    Science.gov (United States)

    Ekanem, E E; Akitoye, C O; Adedeji, O T

    1991-09-01

    We investigated food hygiene-related behaviour as well as other risk factors for diarrhoea in children 6-36 months of age in Iwaya community in Lagos, Nigeria. Between April and July 1989, a bi-weekly diarrhoea surveillance was maintained in 672 households. Following the surveillance, 273 (case = 67 and control = 206) families were visited twice, each visit lasting for 3-4 hours. Detailed observations on food hygiene, water sanitation, and sanitary conditions of the home were made. There was no significant association between any of the observed food hygiene behaviours and the occurrence of diarrhoea. The presence of faeces in and around the toilet area (RR = 1.79), habit of defecating and urinating in chamber pots in dwelling units (RR = 1.80), indiscriminate disposal of waste (RR = 2.48), and source of domestic water (RR = 2.94) were the main factors significantly associated with the occurrence of diarrhoea in this community. These findings imply that diarrhoea might be reduced through an education programme which focuses on the proper care, handling and storage of defecation pots and proper disposal of waste.

  8. Mechanisms of hypolimnion erosion in a deep lake (Lago Maggiore, N. Italy

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    Elisabetta A. CARRARA

    2010-02-01

    Full Text Available Holo-oligomixis is one of the most important hydrodynamic characteristics of deep lakes in temperate regions, especially those of the Southern Alps. It influences such important lake chemical and biological processes as the oxygenation of deep layers, recycling of nutrients, vertical migration of plankton, and reproduction. Analysis of physico-chemical data from Lago Maggiore over the years 1951 – 2008 has shown that in addition to ever active but relatively inefficient convective mixing, three other mechanisms act to oxygenate this lake’s deep waters in winter. These are conveyor belt currents, cold and well-oxygenated tributary inflows that sink down to depths of equal density, and differential cooling of littoral waters that subsequently slide down the lake flanks. Their common outcome is to cause deep erosion of the hypolimnion. Heat content and thermal stability also are affected and are analyzed here in relation to external driving forces, examining in particular how dynamics may be altered by climate change.

  9. Psychosocial effects of cleft lip and palate on Nigerians: the Ikeja-Lagos experience.

    Science.gov (United States)

    Fadeyibi, Idowu O; Coker, Olurotimi A; Zacchariah, Matthiew P; Fasawe, Adedolapo; Ademiluyi, Samuel A

    2012-02-01

    We studied 116 patients who presented with cleft lip and palate (CLP) and were seen during a state-wide screening exercise for people with orofacial deformities in Ikeja-Lagos, Nigeria between May 2006 and July 2007. Detailed histories were taken and physical examinations made. The following psychometric instruments: General Health Questionnaire 28 (GHQ28), State-Trait Anxiety Inventory Y1 (STAI-Y1), STAI-Y2, and Self rating Depression Scale (SDS) were given on the respondents by a clinical psychologist. The respondents comprised 57 men and 59 women with a male:female ratio of 1:1.04. There were 42 (36%) adults and 74 (64%) children. Fifty-four (47%) patients had cleft lip (CL), 27 (23%) had cleft lip and palate (CLP), and 35 (30%) had cleft palate alone. Forty-five (39%) of the respondents were parents and guardians who responded to the presence of the deformity on behalf of children who were less than 6 years old, and assessed the reactions of those who were aged 6-12 years old. Older patients replied directly to the psychometric instruments. The outcome of the assessment of the Mental Health Profile of the participants showed high incidence of anxiety, depression, and impairment of general wellbeing. The effects were most pronounced in the 6-12 year age group. We recommend that the psychosocial impacts of CLP on the patients, parents, and relations should be managed together with the reconstructive procedures.

  10. Client perception of service quality at the outpatient clinics of a General hospital in Lagos, Nigeria.

    Science.gov (United States)

    Ogunnowo, Babatunde Enitan; Olufunlayo, Tolulope Florence; Sule, Salami Suberu

    2015-01-01

    Service quality assessments have assumed increasing importance in the last two decades. They are useful in identifying gaps in services been provided with the ultimate aim of guaranteeing quality assurance. The objective of this study was to assess the client perception of service quality at the outpatient clinics of Randle General hospital, Lagos. A descriptive cross sectional study was conducted from March to May 2013. A multistage sampling technique was used to select respondents and data was collected with the aid of modified SERVQUAL questionnaires. The data was analysed with aid of EPI-INFO 2002 and statistical significance was set at a P value 0.05 for statistical significance. Total of 400 respondents were interviewed. The mean age was 40 years with a standard deviation of 15.2 yrs. The highest mean score of 4.35 out of a possible maximum of 5 was recorded in assurance domain while the lowest mean score of 4.00 was recorded in the responsiveness domain. The overall mean score of all the domains was 4.20 with standard deviation of 0.51. Overall majority (80.8%) of respondents rated the overall service quality as good/ very good. After linear regression, the assurance domain was the most important predictor of the overall perceived service quality (pservice quality was good. The major deficiencies were in the responsiveness domain and especially the waiting time. The hospital management should implement measures to improve the responsiveness of services by ensuring prompt delivery of services.

  11. Groundwater radon, radium and uranium concentrations in Regiao dos Lagos, Rio de Janeiro State, Brazil

    International Nuclear Information System (INIS)

    Almeida, R.M.R.; Lauria, D.C.; Ferreira, A.C.; Sracek, O.

    2004-01-01

    Ground water from Regiao dos Lagos, a coastal area of Rio de Janeiro state, was analysed for 226 Ra, 228 Ra, 222 Rn, 238 U, major ion concentrations, and physico-chemical parameters were also measured. Concentrations values ranged from -1 for 226 Ra, from -1 for 228 Ra and from -4 to 8.0x10 -2 Bq l -1 for 238 U. Detectable 222 Rn concentrations (>3 Bq l -1 ) were found only in two samples. The spatial distribution of Ra concentration delineated one distinct area and some hot spots with high Ra concentration. Low pH value is the most important water parameter linked to high radium concentration. This is probably related to limited adsorption of radium on soil ferric oxides and hydroxides at low pH range. There was a significant correlation between uranium concentrations and electrical conductivity values, and also between uranium concentrations and concentrations of Ca, Mg, Na, K, and Cl, indicating sea water impact. Uranium concentrations were lower than maximum contaminant level for drinking water, whereas 17 out of the 88 ground water samples had levels of radium that exceeded the maximum contaminant level for tap water. The total annual effective dose for adult due to the water consumption reaches values up to 0.8 mSv

  12. Occupational hazards and safety measures amongst the paint factory workers in lagos, Nigeria.

    Science.gov (United States)

    Awodele, Olufunsho; Popoola, Temidayo D; Ogbudu, Bawo S; Akinyede, Akin; Coker, Herbert A B; Akintonwa, Alade

    2014-06-01

    The manufacture of paint involves a variety of processes that present with medical hazards. Safety initiatives are hence introduced to limit hazard exposures and promote workplace safety. This aim of this study is to assess the use of available control measures/initiatives in selected paint factories in Lagos West Senatorial District, Nigeria. A total of 400 randomly selected paint factory workers were involved in the study. A well-structured World Health Organization standard questionnaire was designed and distributed to the workers to elicit information on awareness to occupational hazards, use of personal protective devices, and commonly experienced adverse symptoms. Urine samples were obtained from 50 workers randomly selected from these 400 participants, and the concentrations of the heavy metals (lead, cadmium, arsenic, and chromium) were determined using atomic absorption spectroscopy. The results show that 72.5% of the respondents are aware of the hazards associated with their jobs; 30% have had formal training on hazards and safety measures; 40% do not use personal protective devices, and 90% of the respondents reported symptoms relating to hazard exposure. There was a statistically significant (p metal concentrations in the urine samples obtained from paint factory workers as compared with nonfactory workers. The need to develop effective frameworks that will initiate the integration and ensure implementation of safety regulations in paint factories is evident. Where these exist, there is a need to promote adherence to these practice guidelines.

  13. Knowledge of commercial bus drivers about road safety measures in Lagos, Nigeria.

    Science.gov (United States)

    Okafor Ifeoma, P; Odeyemi Kofoworola, A; Dolapo Duro, C

    2013-01-01

    Road traffic injuries have persisted as a serious public health problem and much of the health burden is in developing countries. Over-speeding, poor enforcement of traffic regulations and commuter buses have been highly implicated in road traffic injuries in developing countries. The aim of this study was to determine drivers' knowledge of selected road safety measures, i.e. the pre-requisites for driver's license, road signs and speed limits. This was a cross-sectional study carried out in Lagos, Nigeria. Simple random sampling was used to select the two motor parks used for the study and all the consenting commercial minibus drivers operating within the parks (407) were included in the study. Data was collected with a pre-tested, structured, interviewer-administered questionnaire and analyzed with epi-info statistical software. Two hundred and sixty-one (64.1%) of them knew that Visual Acuity test should be done before obtaining driver's license and 53.8% knew the correct minimum age for obtaining driver's license. Only 1% of the drivers had correct knowledge of the driver's license authorities in Nigeria. The drivers had poor knowledge of road signs (59.0%) and poor knowledge of maximum speed limits (100%). The oldest, least educated and least experienced drivers had the poorest level of knowledge. The drivers demonstrated poor knowledge of road safety measures. There is need for driver education to improve their knowledge.

  14. Health care providers' knowledge of, attitudes toward and provision of emergency contraceptives in Lagos, Nigeria.

    Science.gov (United States)

    Ebuehi, Olufunke Margaret; Ebuehi, Osaretin A T; Inem, Victor

    2006-06-01

    Emergency contraception can play an important role in reducing the rate of unintended pregnancies in Nigeria. Although it is included in the national family planning guidelines, there is limited awareness of this method among clients. In 2003-2004, a sample of 256 health care providers within Lagos State were surveyed about their knowledge of, attitudes toward and provision of emergency contraceptives, using a 25-item, self-administered questionnaire. Frequencies were calculated for the various measures, and chi-square tests were used to determine significant differences. Nine in 10 providers had heard of emergency contraception, but many lacked specific knowledge about the method. Only half of them knew the correct time frame for effective use of emergency contraceptive pills, and three-fourths knew that the pills prevent pregnancy; more than a third incorrectly believed that they may act as an abortifacient. Fewer than a third of respondents who had heard of the pills knew that they are legal in Nigeria. Of those who had heard about emergency contraception, 58% had provided clients with emergency contraceptive pills, yet only 10% of these providers could correctly identify the drug, dose and timing of the first pill in the regimen. Furthermore, fewer than one in 10 of those who knew of emergency contraception said they always provided information to clients, whereas a fourth said they never did so. Nigerian health care providers urgently need education about emergency contraception; training programs should target the types of providers who are less knowledgeable about the method.

  15. Solid waste generation and characterization in the University of Lagos for a sustainable waste management.

    Science.gov (United States)

    Adeniran, A E; Nubi, A T; Adelopo, A O

    2017-09-01

    Waste characterization is the first step to any successful waste management policy. In this paper, the characterization and the trend of solid waste generated in University of Lagos, Nigeria was carried out using ASTM D5231-92 and Resource Conservation Reservation Authority RCRA Waste Sampling Draft Technical Guidance methods. The recyclable potential of the waste is very high constituting about 75% of the total waste generated. The estimated average daily solid waste generation in Unilag Akoka campus was estimated to be 32.2tons. The solid waste characterization was found to be: polythene bags 24% (7.73tons/day), paper 15% (4.83tons/day), organic matters 15%, (4.83tons/day), plastic 9% (2.90tons/day), inert materials 8% (2.58tons/day), sanitary 7% (2.25tons/day), textile 7% (2.25tons/day), others 6% (1.93tons/day), leather 4% (1.29tons/day) metals 3% (0.97tons/day), glass 2% (0.64tons/day) and e-waste 0% (0.0tons/day). The volume and distribution of polythene bags generated on campus had a positive significant statistical correlation with the distribution of commercial and academic structures on campus. Waste management options to optimize reuse, recycling and reduce waste generation were discussed. Copyright © 2017 Elsevier Ltd. All rights reserved.

  16. The effects of Hurricane Hugo on suspended-sediment loads, Lago Loiza Basin, Puerto Rico

    Science.gov (United States)

    Gellis, A.

    1993-01-01

    In the two main tributaries that enter Lago Loiza, Rio Grande de Loiza and Rio Gurabo, 99 600 tonnes of suspended sediment was transported by 58.2??106 m3 of runoff in a 48 h period. The storm-average suspended-sediment concentration in the Rio Grande de Loiza for Hurricane Hugo was 2290 mgl-1, the second lowest for the 12 storms that have been monitored at this site. In Rio Gurabo the storm-average suspended-sediment concentration was 1420 mg l -1, the sixth lowest recorded out of 15 monitored storms. In Quebrada Salvatierra, a small tributary to Rio Grande de Loiza, suspended-sediment concentrations were as low as 33 mg l-1 during peak runoff of 20m3s-1. Normally the suspended-sediment concentrations at this discharge are 300 mg l-1. Hurricane force winds seem to be the most important factor contributing to the lower than expected suspended-sediment loads. High winds caused vegetation and debris to be dislodged and displaced. Debris accumulated on hillslopes and in small channels, blocked bridges and formed debris dams. These dams caused local backwater effects that reduced stream velocities and decreased suspended-sediment loads. -from Author

  17. Multichannel analysis of the surface waves of earth materials in some parts of Lagos State, Nigeria

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    Adegbola R.B.

    2016-09-01

    Full Text Available We present a method that utilizes multichannel analysis of surface waves (MASW, which was used to measure shear wave velocities, with a view to establishing the probable causes of road failure, subsidence and weakening of structures in some local government areas in Lagos, Nigeria. MASW data were acquired using a 24-channel seismograph. The acquired data were processed and transformed into a two-dimensional (2-D structure reflective of the depth and surface wave velocity distribution within a depth of 0–15 m beneath the surface using SURFSEIS software. The shear wave velocity data were compared with other geophysical/ borehole data that were acquired along the same profile. The comparison and correlation illustrate the accuracy and consistency of MASW-derived shear wave velocity profiles. Rigidity modulus and N-value were also generated. The study showed that the low velocity/ very low velocity data are reflective of organic clay/ peat materials and thus likely responsible for the failure, subsidence and weakening of structures within the study areas.

  18. Epidemiology of psychoactive drug use amongst adolescents in metropolitan Lagos, Nigeria.

    Science.gov (United States)

    Famuyiwa, Oluwole; Aina, Olatunji F; Bankole-Oki, Olufunlayo M

    2011-07-01

    The study was conducted in response to the lack of epidemiological data in recent time on the use of psychoactive substances by adolescents in metropolitan Lagos-a city unique for its socio-economic profile. We considered some methodological issues omitted in several previous studies. A total of 4,286 school pupils (mean age 15.2) were anonymously administered a Self-Report Questionnaire to ascertain a range of key drug use factors in lifetime and 1-year periods. The rate of use of most of the 14 substances investigated was much higher than reported in any other study on comparable population sample. We found that 61.8 and 32.1% of respondents have used one or more substances in their lifetime and in the past 1 year, respectively. High lifetime rates of use were found for common stimulants: coffee, kolanut, and prescription drugs (barbiturates and minor tranquilisers). The rate of use of proscribed addictive substances, cannabis, heroin, and cocaine, ranged between 4.0 and 4.8%. Missing data and non-response rates were few; however, social acquiescence, under and over reporting, could be mitigant to estimation of rates and patterns of use. We advocate properly articulated school-based educative programmes that can facilitate drug demand reduction.

  19. Estimating the Risk of ABO Hemolytic Disease of the Newborn in Lagos

    Science.gov (United States)

    Akanmu, Alani Sulaimon; Oyedeji, Olufemi Abiola; Adeyemo, Titilope Adenike; Ogbenna, Ann Abiola

    2015-01-01

    Background. ABO hemolytic disease of the newborn is the most common hemolytic consequence of maternofetal blood group incompatibility restricted mostly to non-group-O babies of group O mothers with immune anti-A or anti-B antibodies. Aim. We estimated the risk of ABO HDN with view to determining need for routine screening for ABO incompatibility between mother and fetus. Materials and Methods. Prevalence of ABO blood group phenotypes in blood donors at the donor clinic of the Lagos University Teaching Hospital and arithmetic methods were used to determine population prevalence of ABO genes. We then estimated proportion of pregnancies of group O mothers carrying a non-group-O baby and the risk that maternofetal ABO incompatibility will cause clinical ABO HDN. Results. Blood from 9138 donors was ABO typed. 54.3%, 23%, 19.4%, and 3.3% were blood groups O, A, B, and AB, respectively. Calculated gene frequencies were 0.1416, 0.1209, and 0.7375 for A, B, and O genes, respectively. It was estimated that 14.3% of deliveries will result in a blood group O woman giving birth to a child who is non-group-O. Approximately 4.3% of deliveries are likely to suffer ABO HDN with 2.7% prone to suffer from moderately severe to severe hemolysis. PMID:26491605

  20. Predicting the components of the total hemispherical solar radiation from sunshine duration measurements in Lagos, Nigeria

    International Nuclear Information System (INIS)

    Maduekwe, A.A.L.; Chendo, M.A.C.

    1994-06-01

    Correlations for the city of Lagos (latitude 6.58 deg. N, longitude 3.33 deg. E) have been found between the records of bright sunshine hours and the daily and monthly components of the total hemispherical solar radiation. Four new models have been developed which include H/H 0 as a predictor in the Angstrom type models for the diffuse and beam fractions. They contain the quadratic term of the sunshine index, (n/N) and are given as follows: Q/H 0 =a+b(H/H 0 )+c(n/N)+d(n/N) 2 Q/H 0 =a+b(H/H 0 )+d(n/N) 2 ; Q/H 0 =a+b(H/H 0 )+c(n/N)+d(n/N) 2 ; Q/H 0 =a+b(H/H 0 )+d(n/N) 2 ; where Q is the diffuse or beam radiation on a horizontal plane. The statistical test carried out showed that the new equations generally improved the prediction of the beam or diffuse components from the Angstrom type equations by over 25%. (author). 21 refs, 3 tabs

  1. Long-term survival of an urban fruit bat seropositive for Ebola and Lagos bat viruses.

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    David T S Hayman

    2010-08-01

    Full Text Available Ebolaviruses (EBOV (family Filoviridae cause viral hemorrhagic fevers in humans and non-human primates when they spill over from their wildlife reservoir hosts with case fatality rates of up to 90%. Fruit bats may act as reservoirs of the Filoviridae. The migratory fruit bat, Eidolon helvum, is common across sub-Saharan Africa and lives in large colonies, often situated in cities. We screened sera from 262 E. helvum using indirect fluorescent tests for antibodies against EBOV subtype Zaire. We detected a seropositive bat from Accra, Ghana, and confirmed this using western blot analysis. The bat was also seropositive for Lagos bat virus, a Lyssavirus, by virus neutralization test. The bat was fitted with a radio transmitter and was last detected in Accra 13 months after release post-sampling, demonstrating long-term survival. Antibodies to filoviruses have not been previously demonstrated in E. helvum. Radio-telemetry data demonstrates long-term survival of an individual bat following exposure to viruses of families that can be highly pathogenic to other mammal species. Because E. helvum typically lives in large urban colonies and is a source of bushmeat in some regions, further studies should determine if this species forms a reservoir for EBOV from which spillover infections into the human population may occur.

  2. Prevalence and antimicrobial susceptibility of Vibrio parahaemolyticus isolated from seafoods in Lagos Lagoon Nigeria

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    Chigozie Oramadike

    2015-12-01

    Full Text Available In this study, a total of 90 seafood samples; croaker fish (Pseudotolithus senegalensis, shrimps (Penaeus notialis and blue crab (Callinectes sapidus collected from landing sites along the Lagos Lagoon in Nigeria were examined for the prevalence of Vibrio parahaemolyticus using both biochemical and molecular methods. Biochemical identification of the isolates was confirmed by Polymerase Chain Reaction (PCR. The presence of the virulence-associated tdh (thermostable direct haemolysin, trh1 (thermostable-related haemolysin and trh2 genes in the V. parahaemolyticus isolates was also detected by the PCR method. PCR products from the V.16S primers were sequenced. Antibiotics susceptibility of the isolates was also determined. About, eight isolates were presumptively identified as V. parahaemolyticus, PCR identified five and none of the isolates were positive for the genes tdh or trh. The five isolates sequenced were identified as different strains of V. parahaemolyticus. V. parahaemolyticus_RIMD_2210633 = 2MKSHa remained resistant to all antimicrobials tested. However, only V. parahaemolyticus_MP-2_AY911391 = TBSHy showed strong sensitivity to all the antimicrobials with ampicillin (minimum inhibitory concentration-4 μg/ml. In addition, the other three isolates showed sensitivity for Tetracycline, Ciprofloxacin, Gentamicin and Ceftazidime. Ampicillin resistance in most of the isolates suggests low efficiency of ampicillin in management of V. parahaemolyticus infection.

  3. A mão que desenha o corpo: O lago da lua

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    Vinícius Lopes Passos

    2003-10-01

    Full Text Available Em O lago da lua, Paula Tavares, escritora angolana radicada em Portugal, amalgama corpo e poesia, resultando num trabalho delicado, pulsante e, por vezes, agressivo, em que o feminino comparece na linguagem da memória, nomeando o mundo de dentro e de fora, misturando o universo africano com o europeu. O embaralhamento das tradições revela o sensível e o cognoscível, bem cosidos num texto poético particular, cujas imagens conduzem o leitor para o tempo contemplativo da arte – no caso a poesia – mas também para o tempo investigativo e analítico da razão, em suas insuspeitas relações. O propósito aqui é apresentar uma breve leitura deste livro da autora, enfatizando a relação poesia e erotismo como agregadora de valores estéticos.

  4. Pectinase Production by Bacillus and Paenibacillus sp. Isolated from Decomposing Wood Residues in the Lagos Lagoon

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    Busayo Tosin Akinyemi

    2017-09-01

    Full Text Available Three wood decomposing bacteria isolated from the Lagos lagoon, Bacillus megaterium, Bacillus bataviensis and Paenibacillus sp. were screened for their pectinase producing abilities using pectin as substrate under submerged fermentation (SMF conditions. The results showed that all three isolates produced appreciable pectinolytic activities. Paenibacillus sp. showed the highest pectinase activity when compared with the other two isolates. The optimum pH for pectinase activity for both B. megaterium and B. bataviensis was 8.0 while it was 6.5 for Paenibacillus sp., B. bataviensis, and B. megaterium showed optimum pectinase activity at 60°C and Paenibacillus sp. at 40°C. Metal ions such as Na+ and K+ improved the activity of pectinase produced by the three isolates when compared to the effect of Zn2+ and Mn2+. The molecular weights of the enzymes were also estimated by gel filtration as 29,512 da, 32,359 da, and 25,119 da for Paenibacillus sp., B. megaterium and B. bataviensis respectively. The study has provided a platform for further investigation into the biochemical characterization of the enzyme, and optimization of culture conditions to scale up pectinase production for commercial exploitation.

  5. Empirical Assessment of Social Motivation and Performance of Informal Entrepreneurs in Computer Village, Lagos State

    Directory of Open Access Journals (Sweden)

    Adebanji William Adebanji

    2017-10-01

    Full Text Available The current upsurge of unemployment in Nigeria can be downplayed by entrepreneurship, an economic driver which reflects negatively on the adopted mono-economy of Nigeria with her dependence on oil rather than attaining a multi-diversification in all sectors. The informal entrepreneurship has proved its stance positively in curbing the unemployment issues in all sector and yet there seems to be an aggressive action taken towards its sustainability by the government and in this study, Nigeria. The study focuses on the need to understand the level of social drive in relationship to the performance attained by the informal entrepreneurs. In this regards, the propelling force to why the informal entrepreneur with governmental regulation have a positive performance and this was conducted in Computer village, Ikeja, Lagos. The explorative and causal research was adopted for the study. Survey research was considered appropriate for the study. 250 copies of questionnaire were distributed and 205 were returned depicting 82%. Analysis was done using the SPSS package and the hypothesis tested suggested that there is a significant relationship between social motivators and business competitiveness in the informal electronic market at 5 percent significant level, thereby accepting the alternate hypothesis. This study recommends that the place of family support has been noted to highly affect the motivation of the business and to this end, the basic support gotten from the government should be redesigned (i.e. schools, health, such that the remaining income will be used for expansion or transition while performance is primed.

  6. THE CLIMATE OF LAGO MAGGIORE AREA DURING THE LAST FIFTY YEARS

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    Angelo Rolla

    2006-09-01

    Full Text Available Data collected in over 50 years' activity at the C.N.R. meteorological station of Pallanza were analysed to see whether any changes have taken place in some climatic elements and to quantify the extent of such changes. A statistical analysis of the respective historical series was performed on nine meteorological parameters (solar radiation, insolation, air temperature, atmospheric pressure, humidity, cloud cover, precipitation, evaporation and wind, and on two other strictly limnological features: the level of Lago Maggiore and its water temperature at six different depths. In particular, we evaluated the means and the extremes (maxima and minima on an annual, seasonal, monthly and daily level, with the results presented uniformly for all the parameters, also in graphic form. We especially highlighted the trend lines, even though they were not always statistically significant owing to the extreme variability of the meteorological data; in the absence of statistical validity, their significance is an approximate indication of their increasing or decreasing trend. Results showed that insolation, air temperature and atmospheric pressure had increased markedly over time, at least on an annual level, with the trends for solar radiation, humidity and cloud cover also showing an increase, though very slight. Evaporation and wind showed a steady, marked decrease, while precipitation and lake level were essentially stable. Water temperature showed a more varied picture, with the temperature of the topmost levels (to a depth of 10 m continuing to increase.

  7. Cormic Index Profile of Children with Sickle Cell Anaemia in Lagos, Nigeria

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    Samuel Olufemi Akodu

    2014-01-01

    Full Text Available Background. Sickle cell disorders are known to have a negative effect on linear growth. This could potentially affect proportional growth and, hence, Cormic Index. Objective. To determine the Cormic Index in the sickle cell anaemia population in Lagos. Methodology. A consecutive sample of 100 children with haemoglobin genotype SS, aged eight months to 15 years, and 100 age and sex matched controls (haemoglobin genotype AA was studied. Sitting height (upper segment and full length or height were measured. Sitting height was then expressed as a percentage of full length/height (Cormic Index. Results. The mean Cormic Index decreased with age among primary subjects (SS and AA controls. The overall mean Cormic Index among primary subjects was comparable to that of controls (55.0±4.6% versus 54.5±5.2%; 54.8±4.5% versus 53.6±4.9% in boys and girls, respectively. In comparison with AA controls, female children with sickle cell anaemia who were older than 10 years had a significantly lower mean Cormic Index. Conclusion. There was a significant negative relationship between Cormic Index and height in subjects and controls irrespective of gender. Similarly, a significant negative correlation existed between age, sitting height, subischial leg length, weight, and Cormic Index in both subjects and controls.

  8. Occurrence of Campylobacter species in poultry forms in Lagos area of Nigeria.

    Science.gov (United States)

    Aboaba, O O; Smith, S I

    2005-06-01

    Samples of poultry droppings were collected from fifty poultry farms in Lagos area of Nigeria. Campylobacter species were isolated from serially diluted samples using Bolton selective enrichment medium under microaerophilic condition at 42 degrees C. Samples of water, both treated and untreated used in the farms were also analysed in the same manner. Fifteen Campylobacter strains were isolated from the droppings. All the strains were identified using biochemical characteristics differentiating Campylobacter species. They were identified as hippurate positive (C. jejuni) and negative species (C. coli). They were biotype' using the extended scheme described by Lior (1984). Campylobacter coli biotype 'I was the most prevalent (66.66%) followed by C. jejuni biotype 1 (20.00%). The biotype ii of the two species accounted for 6.67% each. The C. jejuni biotype III and IV were not isolated during the study. The preponderance of C. coli indicates that poultry can be a major reservoir for the spread of human campylobacteriosis. Poultry farmers, therefore, must ensure prompt and adequate means of disposal of waste materials as well as maintaining good sanitary conditions.

  9. Prevalence of cardiovascular risk factors amongst traders in an urban market in Lagos, Nigeria.

    Science.gov (United States)

    Odugbemi, T O; Onajole, A T; Osibogun, A O

    2012-03-01

    A descriptive cross-sectional study was carried out to determine the prevalence of cardiovascular risk factors amongst traders in an urban market in Lagos State. Tejuosho market, one of the large popular markets was selected from a list of markets that met the inclusion criteria of being major markets dealing in general goods using a simple random sampling technique by balloting. Four hundred (400) traders were selected using a systematic random sampling. Each trader was interviewed with a well-structured questionnaire and had blood pressure and anthropometric measurements (height, weight and body mass index). Female traders made up (74.3%) 297 of the total population. The mean age was 45.48+11.88 and 42.29+10.96 years for males and females respectively. Majority 239 (59.8%) fell within the age range of 35 - 55 years. The cardiovascular risk factors identified and their prevalence rates were hypertension (34.8%), physical inactivity (92%), previously diagnosed diabetes mellitus (0.8%), risky alcohol consumption (1%), cigarette smoking (0.3%) in females and (17.5%) in males, obesity (12.3%) and overweight (39.9%). The study recommended that any health promoting, preventive or intervention programme for this population would have to be worked into their market activities if it is to make an impact.

  10. Vertical distribution of zooplankton in the water column of Lago Amapá, Rio Branco, Acre, Brazil

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    Erlei Cassiano Keppeler

    2004-06-01

    Full Text Available The aim of investigation was to study the model of vertical distribution in Lago Amapá, taking into consideration the seasonality of its zooplanktonic composition. Lago Amapá (10º2'36"S and 67º50'24"W is located in the floodplain of the Rio Acre. Samplings were conducted at three different depths of the water column, to study the vertical distribution of zooplankton populations and determine some physico-chemical and biological parameters of Lago Amapá. Weekly samples were taken with a Van Dorn sampler. The species showed greater concentrations at the by means of water column. Thirty-eight zooplankton species were found in the samples represented by Rotifera (30, Cladocera (5 and Cyclopoida (3. The temperature of the water column showed a tendency toward relatively high values (about 30ºC with little variation, consequently resulting in low viscosity. Based of Jaccard's index, it was seen that during the low-water phase, S1 and S3 of the three sampling stations studied, had greater similarity (Cj = 0.7058 in the middle of the water column. Lago Amapá showed characteristics in line with the intermediate disturbance hypothesis model, favoring colonization by opportunistic species such as rotifers.O objetivo desta investigação foi observar a distribuição vertical da comunidade do zooplâncton no Lago Amapá (10º2'36"S e 67º50'24"W, localizado na planície de inundação do Rio Acre. Amostragens foram conduzidas em três diferentes profundidades da coluna da água, considerando aspectos sazonais do zooplâncton, parâmetros físicos, químicos e biológicos. Coletas foram realizadas semanalmente com Garrafa de Van Dorn. As espécies apresentaram maiores concentrações no meio da coluna da água. Foram encontradas 38 espécies, assim distribuídas: Rotifera (30, Cladocera (5 e Cyclopoida (3. A temperatura da coluna da água em geral apresentou-se alta, em torno de 30ºC, com pequena variação, resultando em baixa viscosidade. O

  11. ATTITUDES AND ACCEPTANCE OF NIGERIANS TOWARDS VASECTOMY--A COMPARISON OF MARRIED MEN AND WOMEN IN LAGOS.

    Science.gov (United States)

    Tijani, K H; Ojewola, R W; Yahya, G L; Oluwole, A A; Odusanya, B

    2013-03-01

    Nigeria with a growth rate of 28%, accounts for over two thirds of the West African population. It also has one of the highest maternal mortality rates in the world with contraceptive prevalence among married couples less than 10%. Despite its safety and efficacy vasectomy appears to be unpopular in our environment. To assess the perception and acceptance of married men and women towards vasectomy and the influence of the spouse on the man's decision to accept or reject vasectomy. A cross sectional questionnaire based study. With an estimated population of 20 million, Lagos is the most cosmopolitan and urbanised city in Nigeria and accounts for 65% of all commercial activities in the country. Virtually all the tribes in Nigeria are represented in the city. Literate pregnant women recruited from the antenatal clinics and literate new fathers. All subjects were recruited from three health facilities in the Lagos metropolis. Twenty seven point five and twenty one percent of the men and women respectively had a good Knowledge of vasectomy while 49.1% and 19% of all men and women respectively with good knowledge would accept vasectomy (or agree for their spouses to have the procedure). Overall acceptance rates for men and women were 26 and 13.5% respectively while 92% of men who can opt for vasectomy will only do so if their spouses agree. Knowledge about vasectomy was the strongest single factor influencing the acceptance of vasectomy (p= 0.013) with stronger correlation among men than women (p=0.005 vrs p=.0.023). Knowledge and acceptance of vasectomy is significantly better in males than female Nigerians living in Lagos.

  12. Datos geográficos de los murciélagos (Chiroptera en el Neotrópico

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    Elkin A. Noguera-Urbano

    2014-03-01

    Full Text Available Los esfuerzos globales para digitalizar los datos de ocurrencia de la biodiversidad en colecciones, museos y otras instituciones han estimulado el desarrollo de herramientas para mejorar el conocimiento y conservación de la biodiversidad. La “Global Biodiversity Information Facility” GBIF permite el acceso a más de 321 millones de registros, alojados en 379 instituciones. Los murciélagos neotropicales son un grupo muy diverso y especializado y la información geográfica del grupo se ha incrementado desde hace unos años, pero son pocos los reportes acerca del tema. El objetivo de este estudio fue analizar el número de registros disponibles en GBIF de los murciélagos neotropicales de 21 países de América. Por lo tanto, se evaluó la consistencia del nombre científico y la calidad geográfica a escala de país. Además, se evaluaron vacíos de información sobre una grilla de 1° latitud y 1° longitud. Hubo cerca de 1/2 millón de registros, de los cuales el 58% no incluyeron coordenadas geográficas; el 52% pasaron las dos evaluaciones. Se estimó que el 54% del área geográfica analizada no tiene registros; los vacíos están en centros de biodiversidad como la Amazonía y la Patagonia. En conclusión nuestros resultados sugieren que los datos disponibles en GBIF tienen sesgos geográficos y en los nombres científicos. Los datos de GBIF representan parcialmente las riquezas de murciélagos, además los principales vacíos de información se encuentran en América del Sur.

  13. CONTRIBUCIÓN DE UN AFLUENTE TRIBUTARIO A LA EUTROFIZACIÓN DEL LAGO DE TOTA (BOYACÁ, COLOMBIA

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    Johanna Abella

    2013-08-01

    Full Text Available El objetivo de este estudio fue caracterizarfisicoquímicamente la corriente LasCintas, afluente al lago de Tota, ubicadoen el departamento de Boyacá. Se determinaronlos parámetros de temperatura,pH, conductividad, oxígeno disuelto,DQO, DBO5, concentración de especiesde nitrógeno (nitratos y nitritos y concentraciónde especies de fósforo (fósforototal, fósforo hidrolizable total, ortofosfatototal y fósforo orgánico total,para lo cual se efectuaron seis muestreosentre septiembre y noviembre del 2009,en cinco puntos seleccionados sobre lacorriente. Estos análisis se realizaron siguiendometodologías normalizadas parael análisis de aguas. En los resultadosse observan comportamientos de pocavariabilidad en los parámetros de temperatura,pH, conductividad y oxígenodisuelto; en cuanto al aporte de nitratos,se determinó que el desarrollo de cultivosen las proximidades de la corrienteaumenta la concentración de estos iones,que pueden ser arrastrados al lago. Respectoa las diferentes especies de fósforoevaluadas permiten establecer la escasacontribución de fósforo orgánico haciael cuerpo de agua, además del aportesignificativo de fósforo por detergentesvertidos en la corriente. Basándose en lacaracterización efectuada, se puede establecerque la actividad agrícola aportanutrientes que probablemente favorecenel desarrollo del proceso de eutrofizaciónen el lago de Tota.

  14. Parental Socio-Economic Status, Family Structure and Living Environment as Predictors of Violence against Children in Lagos, Nigeria

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    A.A. Oni

    2014-02-01

    Full Text Available This study sets out to find out whether parental socioeconomic status, family structure and living environment are predictors of violence against children. Three hypotheses were formulated to guide the investigation. Descriptive survey research design was adopted for the study and the population of the study consisted of all the children in public primary schools and in junior secondary schools within Lagos state of Nigeria. A multistage sampling technique was adopted for the study. Random samples of twenty five children were picked from each of the sixteen schools selected. This gives a total 400 participants that were used for the study. Experts in Sociology, measurement and evaluation certified the content validity of the questionnaire, while the co-efficient of the reliability of the four sections of the questionnaire were ascertained to be 0.63; 0.68; 0.66 and 0.73, respectively for sections A,B,C and D. Chi-square statistical tools was used to test the hypotheses formulated. Major findings of the study include the fact that parental socioeconomic status significantly influence violence against children, family structure significantly influence violence against children and that living environment also significantly influence violence against children. This study conclude by recommending among others that the Lagos State government should put machinery in motion to improve the poverty level of individuals living in Lagos State of Nigeria and should also make available social services and amenities that are supportive of family well being in order to avoid any form of violence against children.

  15. Investigación comparativa entre un sistema de bombeo fotovoltaico y un sistema de bombeo eléctrico para implementarse en Lago Agrio

    OpenAIRE

    Tubón Guevara, Juan Paúl

    2015-01-01

    La situación que enfrenta la ciudad de Lago Agrio por problemas de agua potable, ha obligado a sus habitantes a utilizar bombas eléctricas para abastecerse del líquido vital. La mayoría de domicilios cuenta con tanques o cisternas de almacenamiento y bombas eléctricas para distribución de agua. Otros domicilios cuentan con pozos de agua y mediante bombas eléctricas se proveen del líquido vital. Se ha estimado mediante información local, que en Lago Agrio existen 4733 bombas domésticas tradici...

  16. Ciclo anual de la clorofila-α satelital en el archipiélago de Juan Fernández (33°S), Chile

    OpenAIRE

    Andrade,Isabel; Hormazabal,Samuel E; Correa-Ramirez,Marco A

    2012-01-01

    La variabilidad espacial y temporal del ciclo anual de la clorofila-α en el archipiélago de Juan Fernández se analiza usando ocho anos de datos satelitales de clorofila-α, viento, corrientes y nivel del mar. Este archipiélago está conformado por tres islas: Robinson Crusoe-Santa Clara (RC-SC) y Alejandro Selkirk (AS). Las islas RC-SC se encuentran en una región de alta energía cinética y mayores concentraciones de clorofila-α definida como Zona de Transición Costera, en cambio ...

  17. Ciclo del carbono y modelización biogeoquímica de un lago somero hipertrófico: la Albufera de Valencia

    OpenAIRE

    Onandia Bieco, Gabriela

    2015-01-01

    Los lagos someros son uno de los ecosistemas acuáticos más numerosos a nivel global y hacen posible el desarrollo de multitud de actividades de interés económico y recreativo. En las últimas décadas, gran parte de estos lagos se han visto sujetos a un proceso de eutrofización cultural que a menudo conlleva una transición desde un estado "claro" caracterizado por una alta transparencia del agua y gran abundancia de macrófitos, a un estado "turbio" caracterizado por una baja transparencia del a...

  18. "Their days are spent in gambling and loafing, pimping for prostitutes, and picking pockets": male juvenile delinquents on Lagos Island, 1920s - 1960s.

    Science.gov (United States)

    Heap, Simon

    2010-01-01

    In recent times, Lagos Island has been hit by a cyclical crescendo of juvenile crime perpetrated by "Area Boys," jobless youths who deal in robbery, extortion, and blackmail. Such deviant behavior has historical roots back to colonial times, when youths labeled "alkali boys," "boma boys," and "cowboys" roamed the heart of the capital of Britain's colony of Nigeria between the 1920s and 1960s. Examining the various types of juvenile delinquents on Lagos Island, this article explores the urban experience of criminally minded youths through exploration of street-life, vagrancy, criminality, and public reactions.

  19. Programas de inclusión de personas en situación de discapacidad en la Universidad de Los Lagos, Chile

    OpenAIRE

    Quintana, Magaly; Martínez, Carolina

    2014-01-01

    El presente artículo da cuenta de la génesis del proceso de inclusión en carreras de Pre Grado, de estudiantes con Necesidades Educativas Especiales Permanentes (NEEP) en la Universidad de Los Lagos. Incluye una descripción de las actividades realizadas durante el año 2012 en torno al tema, del Proyecto de inclusión elaborado y presentado a los Cuerpos Colegiados para su aprobación, y de la proyección del Programa de Inclusión Universidad de Los Lagos para los próximos años.

  20. Desarrollo de un detector de rayos cósmicos de la colaboración LAGO en Buenos Aires - Aplicaciones en meteorología espacial

    Science.gov (United States)

    Coppola, M.; Bezzecchi, F.; Gulisano, A. M.; Masías-Meza, J. J.; Areso, O.; Ramelli, M.; Dasso, S.; LAGO Collaboration

    2016-08-01

    The study of low energy cosmic particles allows to analyze several aspects of major interest for space weather. Ground detectors permit to observe secundary particles produced during the cascades developed in the atmosphere. The characterization of a prototype for a water Cherenkov radiation particles detector, in the frame of the LAGO collaboration (Latin American Giant Observatory), is presented in this work. The collaboration plans to install this detector at the LAGO antarctic site. The developed acquisition system and the method used to make the energy callibration of the detector are detailed here, as also corrections for atmospheric effects.

  1. Taxonomía y distribución de los corales hermatípicos (Scleractinia) del Archipiélago de Revillagigedo, México

    OpenAIRE

    James T., Ketchum; Héctor Reyes, Bonilla

    2001-01-01

    A pesar de los recientes registros detallados sobre los corales escleractinios del Archipiélago Revillagigedo, el trabajo taxonómico sobre esta fauna ha sido escaso. Por lo anterior, se hace necesario conformar una base taxonómica sólida para fundamentar otros trabajos a nivel comunitario. Las recolectas de los especimenes se realizaron a diferentes profundidades y en tres de las islas que componen el archipiélago: Socorro, Clarión y San Benedicto, durante 5 salidas de campo de 1990 a 1995. U...

  2. blaCTX-M-I group extended spectrum beta lactamase-producing Salmonella typhi from hospitalized patients in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Akinyemi KO

    2015-05-01

    Full Text Available Kabiru O Akinyemi,1 Bamidele A Iwalokun,2 Olajide O Alafe,1 Sulaiman A Mudashiru,1 Christopher Fakorede,11Department of Microbiology, Lagos State University, Ojo, Lagos, Nigeria; 2Biochemistry and Nutrition Division, Nigerian Institute of Medical Research, Yaba, Lagos, NigeriaPurpose: The global spread of blaCTX-M-I extended-spectrum beta-lactamase (ESBL-producing Salmonella spp. remains a major threat to treatment and control. Evidence of emergence and spread of this marker are lacking in Nigeria. This study investigated blaCTX-M-I ESBL production among Salmonella isolates from hospitalized patients.Methods: Patients (158 total made up of two groups were evaluated. Group A was composed of 135 patients with persistent pyrexia and group B was composed of 23 gastroenteritis patients and their stool samples. Samples were cultured, and isolates were identified and were subjected to antibiotic susceptibility testing by standard methods. Isolates were further screened for ESBL production, blaCTX-M-I genes and transferability by double disk synergy test, plasmid extraction, polymerase chain reaction, and conjugation experiment.Results: Thirty-five (25.9% Salmonella isolates were identified from group A, of which 74.3% were S. typhi, 22.9% were S. paratyphi and two (5.7% were invasive non-typhoidal S. enteritidis. Nine Plasmodium falciparum infections were recorded, four of which were identified as co-infections with typhoidal Salmonella. Only two (8.7% S. enteritidis samples were obtained from group B (P>0.05. A total of 24 isolates were ESBL-positive, eliciting resistance to five to seven antibiotics, and were multiple-drug resistant. ESBL production due to the blaCTX-M-I gene cluster was detected in eleven (45.8% Salmonella isolates. Nine (81.8% of the eleven blaCTX-M-I ESBL producers were S. typhi and two (18.2% isolates were S. enteritidis. Four of nine S. typhi blaCTX-M-I ESBL-producing strains harbored 23 kb self-transmissible plasmid that was co

  3. Data of the properties of rebar steel brands in Lagos, Nigerian market used in reinforced concrete applications.

    Science.gov (United States)

    Joshua, Opeyemi; Olusola, Kolapo O; Oyeyemi, Kehinde D; Ogunde, Ayodeji O; Amusan, Lekan M; Nduka, David O; Abuka-Joshua, Joyce

    2018-04-01

    The data presented herein are compilations of the research summary of "Assessment of the Quality of Steel Reinforcement Bars Available in Nigerian Market" (Joshua et al., 2013) [1]. This data article provides information on the properties and cost of steel rebars used in reinforced concrete in Lagos, Nigeria. The data is based on the properties of 12 mm rebar brands which are the most used steel diameter in construction and they include actual diameters, yield strengths, ultimate strengths, ultimate/yield strength ratio, ductility and the cost of each brand. This data also contains the limiting standard properties of the highlighted properties in this data.

  4. Estado del arte de la limnología de lagos de planos inundables (Ciénagas) en Colombia

    OpenAIRE

    Montoya Moreno Yimmy; Aguirre R Néstor

    2011-01-01

    Colombia es uno de los países con mayor diversidad de especies y de ecosistemas en el planeta. Los lagos ubicados en llanuras de inundación o «ciénagas» (como comúnmente se las conoce en Colombia) comprenden un tipo de ecosistema acuático, que, no obstante su elevada riqueza específica, han sido someramente estudiados. Las investigaciones básicas en estos ambientes son escasas, en su mayoría se hallan publicadas en la «literatura gris» y no existe una compilación actualizada de los di...

  5. Use of water-Cherenkov detectors to detect Gamma Ray Bursts at the Large Aperture GRB Observatory (LAGO)

    International Nuclear Information System (INIS)

    Allard, D.; Allekotte, I.; Alvarez, C.; Asorey, H.; Barros, H.; Bertou, X.; Burgoa, O.; Gomez Berisso, M.; Martinez, O.; Miranda Loza, P.; Murrieta, T.; Perez, G.; Rivera, H.; Rovero, A.; Saavedra, O.; Salazar, H.; Tello, J.C.; Ticona Peralda, R.; Velarde, A.; Villasenor, L.

    2008-01-01

    The Large Aperture GRB Observatory (LAGO) project aims at the detection of high energy photons from Gamma Ray Bursts (GRB) using the single particle technique in ground-based water-Cherenkov detectors (WCD). To reach a reasonable sensitivity, high altitude mountain sites have been selected in Mexico (Sierra Negra, 4550 m a.s.l.), Bolivia (Chacaltaya, 5300 m a.s.l.) and Venezuela (Merida, 4765 m a.s.l.). We report on detector calibration and operation at high altitude, search for bursts in 4 months of preliminary data, as well as search for signal at ground level when satellites report a burst

  6. Use of water-Cherenkov detectors to detect Gamma Ray Bursts at the Large Aperture GRB Observatory (LAGO)

    Energy Technology Data Exchange (ETDEWEB)

    Allard, D. [APC, CNRS et Universite Paris 7 (France); Allekotte, I. [Centro Atomico Bariloche, Instituto Balseiro (Argentina); Alvarez, C. [Facultad de Ciencias Fisico-Matematicas de la BUAP (Mexico); Asorey, H. [Centro Atomico Bariloche, Instituto Balseiro (Argentina); Barros, H. [Laboratorio de Fisica Nuclear, Universidad Simon Bolivar, Caracas (Venezuela, Bolivarian Republic of); Bertou, X. [Centro Atomico Bariloche, Instituto Balseiro (Argentina)], E-mail: bertou@cab.cnea.gov.ar; Burgoa, O. [Instituto de Investigaciones Fisicas, UMSA (Bolivia); Gomez Berisso, M. [Centro Atomico Bariloche, Instituto Balseiro (Argentina); Martinez, O. [Facultad de Ciencias Fisico-Matematicas de la BUAP (Mexico); Miranda Loza, P. [Instituto de Investigaciones Fisicas, UMSA (Bolivia); Murrieta, T.; Perez, G. [Facultad de Ciencias Fisico-Matematicas de la BUAP (Mexico); Rivera, H. [Instituto de Investigaciones Fisicas, UMSA (Bolivia); Rovero, A. [Instituto de Astronomia y Fisica del Espacio (Argentina); Saavedra, O. [Dipartimento di Fisica Generale and INFN, Torino (Italy); Salazar, H. [Facultad de Ciencias Fisico-Matematicas de la BUAP (Mexico); Tello, J.C. [Laboratorio de Fisica Nuclear, Universidad Simon Bolivar, Caracas (Venezuela, Bolivarian Republic of); Ticona Peralda, R.; Velarde, A. [Instituto de Investigaciones Fisicas, UMSA (Bolivia); Villasenor, L. [Facultad de Ciencias Fisico-Matematicas de la BUAP (Mexico); Instituto de Fisica y Matematicas, Universidad de Michoacan (Mexico)

    2008-09-21

    The Large Aperture GRB Observatory (LAGO) project aims at the detection of high energy photons from Gamma Ray Bursts (GRB) using the single particle technique in ground-based water-Cherenkov detectors (WCD). To reach a reasonable sensitivity, high altitude mountain sites have been selected in Mexico (Sierra Negra, 4550 m a.s.l.), Bolivia (Chacaltaya, 5300 m a.s.l.) and Venezuela (Merida, 4765 m a.s.l.). We report on detector calibration and operation at high altitude, search for bursts in 4 months of preliminary data, as well as search for signal at ground level when satellites report a burst.

  7. Unmasking inequalities: Sub-national maternal and child mortality data from two urban slums in Lagos, Nigeria tells the story.

    Directory of Open Access Journals (Sweden)

    Erin Anastasi

    Full Text Available Nigeria has one of the highest maternal mortality ratios in the world as well as high perinatal mortality. Unfortunately, the country does not have the resources to assess this critical indicator with the conventional health information system and measuring its progress toward the goal of ending preventable maternal deaths is almost impossible. Médecins Sans Frontières (MSF conducted a cross-sectional study to assess maternal and perinatal mortality in Makoko Riverine and Badia East, two of the most vulnerable slums of Lagos.The study was a cross-sectional, community-based household survey. Nearly 4,000 households were surveyed. The sisterhood method was utilized to estimate maternal mortality and the preceding births technique was used to estimate newborn and child mortality. Questions regarding health seeking behavior were posed to female interviewees and self-reported data were collected.Data was collected from 3963 respondents for a total of 7018 sisters ever married. The maternal mortality ratio was calculated at 1,050/100,000 live births (95% CI: 894-1215, and the lifetime risk of maternal death at 1:18. The neonatal mortality rate was extracted from 1967 pregnancies reported and was estimated at 28.4/1,000; infant mortality at 43.8/1,000 and under-five mortality at 103/1,000. Living in Badia, giving birth at home and belonging to the Egun ethnic group were associated with higher perinatal mortality. Half of the last pregnancies were reportedly delivered in private health facilities. Proximity to home was the main influencing factor (32.4% associated with delivery at the health facility.The maternal mortality ratio found in these urban slum populations within Lagos is extremely high, compared to the figure estimated for Lagos State of 545 per 100,000 live births. Urgent attention is required to address these neglected and vulnerable neighborhoods. Efforts should be invested in obtaining data from poor, marginalized, and hard

  8. Unmasking inequalities: Sub-national maternal and child mortality data from two urban slums in Lagos, Nigeria tells the story.

    Science.gov (United States)

    Anastasi, Erin; Ekanem, Ekanem; Hill, Olivia; Adebayo Oluwakemi, Agnes; Abayomi, Oluwatosin; Bernasconi, Andrea

    2017-01-01

    Nigeria has one of the highest maternal mortality ratios in the world as well as high perinatal mortality. Unfortunately, the country does not have the resources to assess this critical indicator with the conventional health information system and measuring its progress toward the goal of ending preventable maternal deaths is almost impossible. Médecins Sans Frontières (MSF) conducted a cross-sectional study to assess maternal and perinatal mortality in Makoko Riverine and Badia East, two of the most vulnerable slums of Lagos. The study was a cross-sectional, community-based household survey. Nearly 4,000 households were surveyed. The sisterhood method was utilized to estimate maternal mortality and the preceding births technique was used to estimate newborn and child mortality. Questions regarding health seeking behavior were posed to female interviewees and self-reported data were collected. Data was collected from 3963 respondents for a total of 7018 sisters ever married. The maternal mortality ratio was calculated at 1,050/100,000 live births (95% CI: 894-1215), and the lifetime risk of maternal death at 1:18. The neonatal mortality rate was extracted from 1967 pregnancies reported and was estimated at 28.4/1,000; infant mortality at 43.8/1,000 and under-five mortality at 103/1,000. Living in Badia, giving birth at home and belonging to the Egun ethnic group were associated with higher perinatal mortality. Half of the last pregnancies were reportedly delivered in private health facilities. Proximity to home was the main influencing factor (32.4%) associated with delivery at the health facility. The maternal mortality ratio found in these urban slum populations within Lagos is extremely high, compared to the figure estimated for Lagos State of 545 per 100,000 live births. Urgent attention is required to address these neglected and vulnerable neighborhoods. Efforts should be invested in obtaining data from poor, marginalized, and hard-to-reach populations in

  9. Is there a step-wise migration in Nigeria? A case study of the migrational histories of migrants in Lagos.

    Science.gov (United States)

    Afolayan, A A

    1985-09-01

    "The paper sets out to test whether or not the movement pattern of people in Nigeria is step-wise. It examines the spatial order in the country and the movement pattern of people. It then analyzes the survey data and tests for the validity of step-wise migration in the country. The findings show that step-wise migration cannot adequately describe all the patterns observed." The presence of large-scale circulatory migration between rural and urban areas is noted. Ways to decrease the pressure on Lagos by developing intermediate urban areas are considered. excerpt

  10. Monitorización del cartílago tibial en pacientes con osteoartritis basada en estudios multisecuencia de RM

    OpenAIRE

    García Ocaña, I.; Rodríguez Vila, Borja; Pierce, David M.; Sánchez González, Patricia

    2016-01-01

    La osteoartritis (OA) es una enfermedad degenerativa caracterizada por la pérdida de cartílago hialino en la articulación. Es una de las condiciones médicas más frecuentes y una causa importante de discapacidad en ancianos que genera altos costes. Esto hace necesario desarrollar nuevos marcadores diagnósticos que permitan identificar la enfermedad en sus estadios tempranos y aplicar tratamientos de forma eficaz. En este marco las técnicas de diagnóstico por imagen juegan un papel muy importan...

  11. National health insurance scheme: How receptive are the private healthcare practitioners in a local government area of Lagos state

    OpenAIRE

    Campbell Princess Christina; Taiwo Toyin Latifat; Nnaji Feziechukwu Collins; Abolarin Thaddeus Olatunbosun

    2014-01-01

    Background: National Health Insurance Scheme (NHIS) is one of the health financing options adopted by Nigeria for improved healthcare access especially to the low income earners. One of the key operators of the scheme is the health care providers, thus their uptake of the scheme is fundamental to the survival of the scheme. The study reviewed the uptake of the NHIS by private health care providers in a Local Government Area in Lagos State. Objective: To assess the uptake of the NHIS by privat...

  12. Aumento de dorso nasal con implante blando de tejido conectivo laxo y cartílago troce

    OpenAIRE

    Vásquez-García, Mariana; Salcedo-Orellana, Víctor

    2017-01-01

    Introducción y Objetivo: Están descritas innumerables técnicas para el aumento del dorso nasal. Los injertos autólogos son el material preferido en la reconstrucción nasal debido a su biocompatibilidad y a su menor riesgo de infección y exposición. La técnica de cartílago troceado envuelto en fascia temporal se ha popularizado porque evita la visualización de los injertos a través de la piel del dorso nasal. Nuestro estudio tiene como objetivo demostrar que también el tejido conectivo laxo re...

  13. Monitoreo ante inundaciones en comunidades de la cuenca baja del Rio Ostúa y Lago Guija, Guatemala

    OpenAIRE

    Carla Gordillo

    2017-01-01

    El proyecto de investigación Pridca BC 96: Sistema de Monitoreo ante inundaciones en comunidades de la cuenca baja del Rio Ostúa y Lago de Guija, se desarrolló de julio 2014 a diciembre 2015. Las actividades ejecutadas consistieron en la caracterización de la cuenca, elaboración de mapa de susceptibilidad municipal, campaña de sensibilización y taller de selección de comunidades. Se generó un mapa de amenaza y riesgo ante inundación en toda la cuenca y se logró el acercamiento con las comunid...

  14. Serum testosterone levels of HbSS (sickle cell disease male subjects in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Adediran Adewumi

    2011-08-01

    Full Text Available Abstract Background Infertility is a major problem in sickle cell disease patients, especially in males. In addition to low serum testosterone, other abnormalities involving the accessory sex organs, such as the seminal vesicles and the prostate gland, as well as marked decrease in ejaculate volume may be observed in male HbSS patients. Hence, the need to study the role of sex hormones as a cause of infertility in male HbSS patients. Methods An unmatched case-control study was performed using seventy-five consenting subjects from Lagos University Teaching Hospital. These included 47 patients with haemoglobin phenotype SS from the Sickle cell clinic and 28 volunteered medical students and members of staff with haemoglobin phenotype AA. Demographic data were obtained using a self-administered questionnaire. A total of 5 mls of blood was collected from each subject between 9.00 am & 11.am, and assayed for serum testosterone concentration. Results The concentrations of serum testosterone in HbSS patients ranged from 0.2 to 4.3 ng/ml with a mean of 1.28 ± 0.72 ng/ml whilst the values in HbAA controls ranged from 1.2 to 6.9 ng/ml with a mean of 2.63 ± 1.04 ng/ml. Seven (25.0% of the 28 controls had serum testosterone concentration lower than the quoted reference (normal range whereas 44 (93.6% of the 47 HbSS subjects had serum testosterone concentration lower than the reference range. Conclusion Overall, subjects with HbSS have significantly lower mean serum testosterone than HbAA controls.

  15. Upper gastrointestinal endoscopy in children: The Lagos University Teaching Hospital experience

    Directory of Open Access Journals (Sweden)

    Oluwafunmilayo Funke Adeniyi

    2016-12-01

    Full Text Available Background. Paediatric endoscopy is now standard care in the developed world for the management of gastrointestinal (GI disorders. However, in developing countries endoscopy remains an underutilised tool. Objective. To determine the indications and the spectrum of endoscopic findings in children seen at the Lagos University Teaching Hospital, Nigeria. Methods. The indications for upper GI endoscopy and endoscopic findings in children ≤16 years old, referred for the procedure from June 2013 to June 2016, were documented. The endoscopic yield in these children was also determined. Results. In total 71 children were referred for upper GI endoscopy during the study period. There were 35 boys and 36 girls aged 3 months to 16 years. The indications for upper endoscopy were recurrent abdominal pain in 37 (52.1%, upper GI bleeding in 17 (23.9%, recurrent vomiting in 7 (9.9%, dyspepsia in 5 (7.0, heartburn in 2 (2.8%, dysphagia in 1 (1.4, portal hypertension in 1 (1.4 and ingestion of corrosives in 1 (1.4% of the subjects. Endoscopic findings were as follows: gastritis 19 (26.8%, hiatus hernia in 13 (18.3%, gastric erosions in 12 (16.9%, oesophageal varices 6 (8.4%, duodenitis in 4 (5.6%, gastric ulcer in 3 (4.2%, gastric polyp in 2 (2.8%. The overall endoscopic yield was 60.2%. Conclusion. There is a need to increase the awareness of the role of paediatric endoscopy in the diagnosis and treatment of GI disorders in developing countries. Recurrent abdominal pain still remains a relevant indication for the procedure. The need to develop training programmes for paediatric endoscopy and paediatric gastroenterology in general in developing countries cannot be overemphasised.

  16. Bearded saki feeding strategies on an island in Lago Guri, Venezuela.

    Science.gov (United States)

    Norconk, Marilyn A; Conklin-Brittain, Nancy L

    2016-05-01

    Free-ranging bearded sakis (Chiropotes spp.) live in relatively large social groups (22-65+), inhabit very large home ranges (200-1,000 ha), and travel long distances (1.8 to >7 km) each day. While these characteristics would seem to reduce their ability to occupy habitat fragments, several studies suggest otherwise. The key to their success may lie in their dietary adaptations. Bearded sakis are strongly frugivorous, but are primarily seed eaters, and are able to ingest both young and mature fruit. We examined feeding activities of a group of bearded sakis over a 19-month period on a 180 ha island in Lago Guri, Venezuela. Given their feeding adaptations, we predicted that they would minimize peaks and troughs in plant species used for food, limit seasonal variation in the mechanical properties of foods ingested, and balance ingestion of energy-rich foods (e.g. lipids, nonstructural carbohydrates (TNC), and/or free simple sugars). We found that bearded sakis on Danto Manchado had a diverse (plant-based) diet, but two resources (Pradosia caracasana, Sapotaceae, and Oryctanthus alveolatus, Loranthaceae) provided a stable dietary base and were present in the diet almost every month. Second, we found little variation in the mechanical-resistance properties of fruits opened seasonally. Third, they alternated months ingesting foods with high TNC content and months of high lipid content. This may be an attempt to balance energy intake from available foods. Finally, their social propensity to split up into subgroups may predispose them to reduce group sizes to accommodate smaller available areas. We suggest that bearded sakis use both ecological and behavioral mechanisms to survive in smaller-than-typical areas. Longer-term studies (beyond a few generations) of bearded sakis in habitat fragments would allow us to estimate minimum survival area and identify critical resources or resource combinations. © 2015 Wiley Periodicals, Inc.

  17. Assessment of Viability Appraisal Practice by Estate Surveyors and Valuers in Lagos Metropolis, Nigeria

    Directory of Open Access Journals (Sweden)

    Oyetunji Abiodun Kolawale

    2017-01-01

    Full Text Available A capital investment appraisal is a means of ensuring value for money. It is not meant to provide an indication of profit or loss, but rather a comparison of costs in relation to those areas where there is an opportunity or an inclination for change. The decision to invest in a project is based on the expectation of future returns since a rational investor does not expect to incur loss on his capital outlay. This decision making is usually hinged on advice obtained during pre-investment appraisal. This study is aimed at evaluating the mode of practicing investment viability appraisal by Estate Surveyors and Valuers in Lagos metropolis. The data for the study was obtained by randomly administering structured questionnaires on eighty-seven (87 practicing Estate Surveyors and Valuers in the study area and the findings were analyzed through descriptive statistical tools such as the Likert scale to present the result. Findings revealed that the payback period is the most adopted appraisal technique in practice as evidenced with a mean score of 3.57. The objective (s of the investor is also the most significant factor being considered while selecting appraisal technique with a mean score of 3.83 while the problems of actual return varying from the expected return and also difficulty in the repayment of loans always result when a wrong viability technique is employed. The success of any viability study goes beyond knowing the objective (s of the investor; therefore, it was recommended that appraisers should ensure that they are equipped with adequate knowledge required for the execution of feasibility and on viability studies because knowing the right viability criteria for a particular objective will help in advising an investor on a course of action that will best achieve the developer’s objective.

  18. Corixidae (Hemiptera, Heteroptera en el lago urbano del parque Tezozomoc, Azcapotzalco, México, D. F.

    Directory of Open Access Journals (Sweden)

    G. Contreras-Rivero

    2005-01-01

    Full Text Available Los estudios ecológicos sobre la familia Corixidae (Hemiptera en México son escasos y fragmentados, por lo que se analiza su variación espacial y temporal en un lago urbano con algunas variables ambientales. Los muestreos se realizaron mensualmente, de julio de 2000 a junio de 2001, ubicando tres estaciones litorales de muestreo; en cada una se determinó: profundidad, transparencia, temperatura, oxígeno, pH, conductividad, dureza y alcalinidad. Los coríxidos se capturaron con red de cuchara de forma rectangular. Se efectuó un análisis de correlación simple entre la abundancia total de los coríxidos y las variables físicas y químicas registradas. Se registraron tres especies: Graptocorixa abdominalis (Say, 1832, con 53% de abundancia; Corisella edulis (Champion, 1901 con 43% y Krizousacorixa femorata (Guérin, 1857 con 1%. De un total de 2423 organismos capturados, la mayor abundancia se registró en marzo, junto con los valores más altos de profundidad y oxígeno. La menor abundancia se presentó en junio, con los valores más bajos de alcalinidad. La correlación de variables y abundancia total fue positiva y significativa con profundidad, oxígeno y conductividad. La Estación I presentó la mayor abundancia de coríxidos y la estación III la menor abundancia. Las variaciones registradas en la abundancia se deben al aporte de agua y a la ubicación de las estaciones de muestreo.

  19. Coliform and Metal Contamination in Lago de Colina, a Recreational Water Body in Chihuahua State, Mexico

    Science.gov (United States)

    Rubio-Arias, Hector; Rey, Nora I.; Quintana, Rey M.; Nevarez, G. Virginia; Palacios, Oskar

    2011-01-01

    Lago de Colina (Colina Lake) is located about 180 km south of the city of Chihuahua (Mexico), and during the Semana Santa (Holy Week) vacation period its recreational use is high. The objective of this study was to quantify coliform and heavy metal levels in this water body before and after the Holy Week vacation period in 2010. Twenty sampling points were randomly selected and two water samples were collected at each point near the surface (0.30 m) and at 1 m depth. After the Holy Week vacation the same twenty points were sampled at the same depths. Therefore, a total 80 water samples were analyzed for fecal and total coliforms and levels of the following metals: Al, As, B, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn. It was hypothesized that domestic tourism contaminated this water body, and as a consequence, could have a negative impact on visitor health. An analysis of variance (ANOVA) study was performed for each element and its interactions considering a factorial design where factor A was sample date and factor B was sample depth. Fecal coliforms were only detected at eight sampling points in the first week, but after Holy Week, both fecal and total coliforms were detected at most sampling points. The concentrations of Al, B, Na, Ni and Se were only statistically different for factor A. The levels of Cr, Cu, K and Mg was different for both date and depth, but the dual factor interaction was not significant. The amount of Ca and Zn was statistically different due to date, depth and their interaction. No significant differences were found for any factor or the interaction for the elements As, Fe and Mn. Because of the consistent results, it is concluded that local tourism is contaminating the recreational area of Colina Lake, Chihuahua, Mexico. PMID:21776236

  20. ARCHIPIÉLAGOS PROMOTORES DE CAMBIOS ANÁLISIS ESPACIAL DE DINOSAURIO MALL

    Directory of Open Access Journals (Sweden)

    FRATINI NOEMÍ

    2010-05-01

    Full Text Available Durante las últimas décadas, las ciudades posindustriales latinoamericanas se han constituido como nodos de la red mundial. La apertura de sus economías nacionales, posibilitó que algunas de estas ciudades se conviertan en los lugares preferidos para la localización de funciones y actividades de enlace con las redes globales de carácter comercial, productivo, financiero y cultural. Estos espacios urbanos avanzan progresivamente hacia polos segmentados de desarrollo que se manifiestan en la sociedad a través del acceso diferencial a bienes y servicios, surgiendo una dualidad espacial, aparentemente planteada, entre el espacio público y privado, y promoviendo fenómenos de exclusión o inclusión en una tensión permanente. Así se configuran en archipiélagos promotores de cambio y sujetos a diversas dimensiones de análisis. Para interpretar este fenómeno en relación a la inversión de capital, se ha seleccionado como territorio de análsis, un área del sector noroeste de la ciudad de Córdoba, Argentina. Se trata de un complejo comercial de gran magnitud y significación simbólica para la ciudad: Grupo Dinosaurio. El presente trabajo ensaya una aproximación exploratoria para identificar las tensiones producto de los conflictos por el avance en el espacio urbano de inversiones en espacios segmentados, promotores de cambio y su relación con el espacio público- privado, y la consecuente segregación socio- espacial.

  1. Anthropometry of children with cerebral palsy at the Lagos University Teaching Hospital

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    Titilayo Olubunmi Adekoje

    2016-01-01

    Full Text Available Background: Cerebral palsy (CP is one the most common causes of disability among children in developing countries and is often associated with poor growth. The assessment of growth and nutrition of children is an important aspect of health monitoring and is one of the determinants of child survival. Aim: To assess the nutritional status of children with CP as seen in Lagos University Teaching Hospital (LUTH. Subjects and Methods: A prospective case-control study was conducted on children with CP attending the weekly pediatric neurology clinic of the LUTH between April 2005 and March 2006. Controls were apparently healthy children being followed up at the children′s out-patient clinic of LUTH for acute illness that had resolved. Anthropometric measurements of weight, length/height, mid-upper arm circumference, and skinfold thickness were taken according to the protocols recommended by the International Society of the Advancement of Kinanthropometry. Statistical Analysis: EPI-INFO (version 6.04 was used for analysis. Chi-square test was used to determine associations. Student′s t-test was used to compare means of patients and matched controls. Probability P < 0.05 were taken as statistically significant. Results: The controls had higher weight than the patients with mean weight (standard deviation of 13.7 (4.8 kg, and 12.0 (4.5 kg, respectively (P = 0.01. There were also statistically significant differences in the subscapular and biceps skinfold measurements between the patient and control groups (P = 0.00004 and 0.000008, respectively. Twenty-four (25.8% and 5 (5.4% of the patients had moderate and severe undernutrition compared to 6 (6.1% and none, respectively, in the control group (P = 0.00005. Conclusion: Children with CP had significantly lower mean anthropometric parameters and were more malnourished compared with the control group of children matched for age, sex, and social class.

  2. Prevalence of Substance Abuse among Senior Secondary Students in Mainland Local Government, Lagos

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    George N. Ani

    2014-01-01

    Full Text Available Background: Substance abuse refers to the harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs. Use of drugs among adolescents is a global phenomenon eating deep into the fabrics of our society. Students are most vulnerable at this transformative stage in their life. Available report indicates that Nigeria is currently the highest consumer of cannabis and amphetamine in Africa. What is the prevalence of this abuse by students? Methodology: This research was a cross sectional descriptive design to identify the prevalence of substance abuse among students in public senior secondary schools in Mainland Local Government, Lagos. A sample size of two hundred and sixty two was determined and used from randomly selected five out of the nine public schools identified. Multi stage sampling (including simple random and systematic sampling and probability proportional to size methods were usefully employed in scientific selection of 262 samples and subsequent data collection in a total sample frame of 1,938 students. Self-administered questionnaire consisting of open and close-ended questions generated using research objectives was used in data collection. Result: It identified that 19.5% had smoked cigarette once or more in their lifetime. 77.2% had used alcohol once or more in a life time while 7.7% used marijuana, 8.4% tranquilizers and 1.9% cocaine all in a life time respectively. Conclusion: It recommended strict regulation of alcohol and tobacco products import and use in public places as well as aggressive dissemination of information on the dangers of substance use and abuse.

  3. The influence of male partners on contraceptive usage in sub-Saharan Africa-Lagos experience

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    Omololu Adegbola

    2016-01-01

    Full Text Available Background: Family planning programs, researches, and studies have focused mainly on women with little attention to men′s role in the contraceptive choices by the couple. Men′s exclusion from these programs has serious implications on the acceptance and use of contraceptives by the couple. Objective: To determine the influence of male partners on contraceptive use of their spouses. Subjects and Methods: This was a cross-sectional descriptive study at a Tertiary Care Centre in Lagos, Nigeria. It was conducted from January 1 to April 30, 2010, where all consecutive consenting pregnant women were given structured questionnaires to give to their partners so as to evaluate the contribution of the male partners to contraceptives use in their spouses as well as assess their awareness and knowledge of contraception. Categorical variables were analyzed using Chi-square test or Fisher′s exact test as appropriate while continuous variables by t-test. P < 0.05 was considered significant. Results: Of the 370 respondents, only 51.9% (192 knew about female contraceptive methods, while 50% (185 were willing to allow their wives to use contraception. Barrier method (17.3% and periodic abstinence (15.7% were the leading preferred choice for their wives. However, bilateral tubal ligation was the least preferred method (1.6%. Previous counseling of male partner significantly influenced their decision to allow their wives to use contraceptives (P = 0.001. Conclusion: Involving the male partner in family planning counseling plays an important role in increasing the acceptance and use of contraceptives by the couple.

  4. Mothers’ perception of neonatal jaundice in Lagos, Nigeria: An urgent need for greater awareness

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    Chinyere Ezeaka

    2016-12-01

    Full Text Available Background. Neonatal jaundice remains a leading cause of preventable brain damage, mental handicap, physical disabilities and early death among infants. The high mortality and morbidity from neonatal jaundice is exacerbated by the poor understanding and mismanagement of this common neonatal problem by the general populace, leading to dangerous delays and complications. Objective. To assess the knowledge of pregnant women on the causative factors, treatment modalities and sequelae of neonatal jaundice. Methods. Data were obtained from all consecutive women who attended the antenatal clinic of the Lagos University Teaching Hospital, Nigeria, from January 2013 to April 2013, using a pretested questionnaire focusing on knowledge of neonatal jaundice and its causes, treatment and complications. Results. The study participants numbered 395, of whom 213 (53.9% were within the age range of 30 - 39 years. Only 101 (25.6% participants gave a correct definition of neonatal jaundice. The highest proportion of those who did not give a correct definition were from the lower socioeconomic groups V and IV (χ2=12.08, p=0.017. Participants who did not know the causes numbered 313 (79.2%, while 325 (82.2% participants chose ineffective treatment options. Furthermore, 296 (74.9% respondents, especially those with a low level of education, did not identify the complications correctly (χ2=12.61, p=0.006. Conclusion. Women in the study showed inadequate knowledge of and misconceptions regarding neonatal jaundice, which must be addressed in order to reduce significantly the devastating consequences of this common condition. We advocate for improved female literacy and mass health enlightenment programmes.

  5. Incidence and cost estimate of treating pediatric adverse drug reactions in Lagos, Nigeria

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    Kazeem Adeola Oshikoya

    Full Text Available CONTEXT AND OBJECTIVES: Adverse drug reactions (ADRs may cause prolonged hospital admissions with high treatment costs. The burden of ADRs in children has never been evaluated in Nigeria. The incidence of pediatric ADRs and the estimated cost of treatment over an 18-month period were determined in this study. DESIGN AND SETTING: Prospective observational study on children admitted to the pediatric wards of the Lagos State University Teaching Hospital (LASUTH in Nigeria, between July 2006 and December 2007. METHODS: Each patient was assessed for ADRs throughout admission. Medical and non-medical costs to the hospital and patient were estimated for each ADR by reviewing the medical and pharmacy bills, medical charts and diagnostic request forms and by interviewing the parents. Cost estimates were performed in 2007 naira (Nigeria currency from the perspectives of the hospital (government, service users (patients and society (bearers of the total costs attributable to treating ADRs. The total estimated cost was expressed in 2007 United States dollars (USD. RESULTS: Two thousand and four children were admitted during the study; 12 (0.6% were admitted because of ADRs and 23 (1.2% developed ADR(s during admission. Forty ADRs were suspected in these 35 patients and involved 53 medicines. Antibiotics (50% were the most suspected medicines. Approximately 1.83 million naira (USD 15,466.60 was expended to manage all the patients admitted due to ADRs. CONCLUSIONS: Treating pediatric ADRs was very expensive. Pediatric drug use policies in Nigeria need to be reviewed so as to discourage self-medication, polypharmacy prescription and sales of prescription medicines without prescription.

  6. Coliform and Metal Contamination in Lago de Colina, a Recreational Water Body in Chihuahua State, Mexico

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    Hector Rubio-Arias

    2011-06-01

    Full Text Available Lago de Colina (Colina Lake is located about 180 km south of the city of Chihuahua (Mexico, and during the Semana Santa (Holy Week vacation period its recreational use is high. The objective of this study was to quantify coliform and heavy metal levels in this water body before and after the Holy Week vacation period in 2010. Twenty sampling points were randomly selected and two water samples were collected at each point near the surface (0.30 m and at 1 m depth. After the Holy Week vacation the same twenty points were sampled at the same depths. Therefore, a total 80 water samples were analyzed for fecal and total coliforms and levels of the following metals: Al, As, B, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn. It was hypothesized that domestic tourism contaminated this water body, and as a consequence, could have a negative impact on visitor health. An analysis of variance (ANOVA study was performed for each element and its interactions considering a factorial design where factor A was sample date and factor B was sample depth. Fecal coliforms were only detected at eight sampling points in the first week, but after Holy Week, both fecal and total coliforms were detected at most sampling points. The concentrations of Al, B, Na, Ni and Se were only statistically different for factor A. The levels of Cr, Cu, K and Mg was different for both date and depth, but the dual factor interaction was not significant. The amount of Ca and Zn was statistically different due to date, depth and their interaction. No significant differences were found for any factor or the interaction for the elements As, Fe and Mn. Because of the consistent results, it is concluded that local tourism is contaminating the recreational area of Colina Lake, Chihuahua, Mexico.

  7. Coliform and metal contamination in Lago de Colina, a recreational water body in Chihuahua State, Mexico.

    Science.gov (United States)

    Rubio-Arias, Hector; Rey, Nora I; Quintana, Rey M; Nevarez, G Virginia; Palacios, Oskar

    2011-06-01

    Lago de Colina (Colina Lake) is located about 180 km south of the city of Chihuahua (Mexico), and during the Semana Santa (Holy Week) vacation period its recreational use is high. The objective of this study was to quantify coliform and heavy metal levels in this water body before and after the Holy Week vacation period in 2010. Twenty sampling points were randomly selected and two water samples were collected at each point near the surface (0.30 m) and at 1 m depth. After the Holy Week vacation the same twenty points were sampled at the same depths. Therefore, a total 80 water samples were analyzed for fecal and total coliforms and levels of the following metals: Al, As, B, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Se, Si and Zn. It was hypothesized that domestic tourism contaminated this water body, and as a consequence, could have a negative impact on visitor health. An analysis of variance (ANOVA) study was performed for each element and its interactions considering a factorial design where factor A was sample date and factor B was sample depth. Fecal coliforms were only detected at eight sampling points in the first week, but after Holy Week, both fecal and total coliforms were detected at most sampling points. The concentrations of Al, B, Na, Ni and Se were only statistically different for factor A. The levels of Cr, Cu, K and Mg was different for both date and depth, but the dual factor interaction was not significant. The amount of Ca and Zn was statistically different due to date, depth and their interaction. No significant differences were found for any factor or the interaction for the elements As, Fe and Mn. Because of the consistent results, it is concluded that local tourism is contaminating the recreational area of Colina Lake, Chihuahua, Mexico.

  8. A survey of sub-specialty preferences of radiography students of the University of Lagos, Nigeria

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    E T Namah

    2013-01-01

    Full Text Available Background: Technological advances and computing have expanded both the scope and capacity of diagnostic medical imaging (the radiography profession. This has created many diverse imaging modalities which in turn, have culminated in different sub-specialties in the profession. Objective: The aims of the study were to determine the level of awareness of imaging sub-specialties, preferred sub specialties and reasons for preferences of sub-specialties in senior level radiography students of the University of Lagos. Methods: The study was a prospective cross-sectional survey. Consents were obtained before the students were recruited for the study. Data Collection and Analysis: A questionnaire semi-structured in line with objectives of the study was used in data collection. A computer software Epi Info version 3.3 was used to analyze data while results were expressed as percentages of responses and were presented in tables and pie charts. Results : Greater than 90% showed awareness of sub-specialties in the radiography profession whereas 35% preferred ultrasonography to other sub-specialties. The least preferred sub-specialty was conventional radiography (4.3%. Remuneration (73.3% and less physical exertion (73.3% were major attractors to preferred sub-specialties whereas concerns over radiation hazard were major detractors (58.3%. Conclusion : Awareness of sub-specialties in the radiography profession was high amongst students studied. Furthermore, ultrasonography was the most preferred sub-specialty among the respondents. Remuneration was the main attractor to sub-specialties whereas fears over effects of ionizing radiation were the major detractors to some sub-specialties.

  9. Work related stress and coping mechanisms among bankers in Lagos, Nigeria.

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    Olatona, F A; Ezeobika, E N; Okafor, I P; Owoeye, O B A

    2014-03-01

    This study assessed knowledge, prevalence, associated factors and mechanisms of coping with stress among bankers in Lagos State. It was a descriptive cross sectional study. A two stage sampling technique was used to select two hundred and twenty seven (227) respondents. Data was collected using a structured self administered questionnaire. The analysis was done using Epi-info version 2002 software and Chi Square was used to determine association between variables at p value 0.05. Fischer's Exact test was used where Chi-square was not valid. The age range of respondents was between 20 and 49 years while the mean age was 31.3 +/- 5.0 years. Only 3.6% had good level of knowledge about stress, 42.2% had fair level while more than half of the respondents had poor level of knowledge about stress (54.3%). Majority (67.0%) of the respondents were moderately stressed while one quarter (24.7%) were highly stressed. Majority (92.4%) of the respondents used good coping mechanisms though 69.5% of the respondents also used bad coping mechanisms. A greater proportion of those who had poor knowledge about stress were stressed or highly stressed (p = 0.002). A statistically significant association was also found between the departments in the bank and level of stress of the respondents (p = 0.002). The prevalence of stress was high among the bank workers studied. It is recommended that effective stress management programmes are implemented to address the problem of stress among bank workers.

  10. Knowledge and uptake of community-based health insurance scheme among residents of Olowora, Lagos

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    O A Ibukun

    2013-01-01

    Full Text Available Background and Objective: The informal sector population in developing nations has low health coverage from Community Based Health Insurance (CBHI and problems such as limited awareness about the potential impact of prepayment health financing and the limited resources to finance health care can impede success. This study assessed the community based health insurance scheme uptake and determinants in Olowora, Lagos State. Methods: This was a descriptive cross sectional study carried out in July 2010 in all households of 12 out of 41 streets in Olowora,by multistage sampling. Four hundred and sixteen interviewer-administered questionnaires were completed and returned. Analysis was by Epi- info version 3.5.1 software. Results: Although 75.5% of respondents were aware of the Community Health Insurance scheme at Olowora, just about half (49.5% of them had good knowledge of the scheme. A substantial proportion (44.2% of respondents did not believe in contributing money for illness yet to come, and majority (72.3% of such respondents prefers payment for health care when ill. While about half (53% of respondentshad enrolled into the community health insurance scheme, 45.6% of those who had not enrolled were not aware of the scheme. Lack of money was the main reason (51.5% why some enrollees had defaulted. Conclusion: The study identified information gaps and poor understanding of the scheme as well as poverty as factors that have negatively affected uptake. The scheme management has to re-evaluate its sensitization programmes, and also strengthen marketing strategies with special emphasis on the poor.

  11. Comparative Assessment of Blood Lead Levels of Automobile Technicians in Organised and Roadside Garages in Lagos, Nigeria

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    Abdulsalam Saliu

    2015-01-01

    Full Text Available Occupational exposure to lead is common among automobile technicians and constitutes 0.9% of total global health burden with a majority of cases in developing countries. The aim of this study was to determine and compare the blood lead levels of automobile technicians in roadside and organised garages in Lagos State, Nigeria. This was a comparative cross-sectional study. Data were collected using interviewer-administered questionnaires. Physical examinations were conducted and blood was analysed for lead using atomic spectrophotometery. Statistical analyses were performed to compare the median blood lead levels of each group using the independent sample (Mann-Whitney U test. Seventy-three (40.3% of the organised compared to 59 (34.3% of the roadside groups had high blood lead levels. The organised group had statistically significant higher median blood lead levels of, 66.0 µg/dL than the roadside 43.5 µg/dL (P < 0.05. There was also statistically significant association between high blood lead levels and abnormal discolouration of the mucosa of the mouth in the organised group. Automobile technicians in organised garages in Lagos have higher prevalence of elevated blood lead levels and higher median levels than the roadside group. Preventive strategies against lead exposures should be instituted by the employers and further actions should be taken to minimize exposures, improve work practices, implement engineering controls (e.g., proper ventilation, and ensure the use of personal protective equipment.

  12. A Late Holocene Record of Human Impact in the Tropical Lowlands of the Mexican Gulf Coast: Lago Verde.

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    Socorro, L.; Sosa, S.; Caballero, M.; Rodriguez, A.; Ortega, B.

    2005-05-01

    Lago Verde is a maar lake (18 36 43 N; 95 20 52 W) located on the Gulf Coast of Mexico in "Los Tuxtlas" region. The area was cover by tropical rain forest and is part of the core area of the earliest Mesoamerican cultures. A 6 m sediment core was obtained in order to document vegetation and lake level history of this area. Lago Verde is a shallow, eutrophic lake (max. 4 m), the natural vegetation has been removed and grasslands with some tropical trees such Bursera grows around the lake. According with the radiocarbon chronology the sequence covers the last 2500 yr BP. At the base of the sequence low abundance of tropical trees is record, with intermediate lake levels. A sudden change in the pollen stratigraphy occurs at ca. 2000 yr BP, with important presence of Poaceae, Ambrosia and Cheno.-Am. along with Zea mays indicating human activity in the area. This is associated with a change in limnological conditions, recording turbid, shallow environments. This pollen signals correlates with dry phases in Yucatan, suggesting that this dry climatic signal probably had effect on an ample area of Mexico. However, at 1200 yr BP, no more Zea mays pollen is recovered suggesting the abandonment of the area. Lake levels recover as well as the tropical forest. The last 150 yr BP is characterized by the reduction in the pollen of tropical forest trees, presence of Zea mays, increased erosion rates, turbidity and eutrophication in the lake, all related to deforestation.

  13. Kaposi Sarcoma among HIV Infected Patients in Lagos University Teaching Hospital, Nigeria: A 14-Year Retrospective Clinicopathological Study

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    Olakanmi Akinde

    2016-01-01

    Full Text Available Background. Despite the increased incidence of Kaposi sarcoma (KS resulting from the Human Immunodeficiency Virus/Acquired Immunodeficiency Syndrome (HIV/AIDS pandemic, there is still significant underreporting of KS in this environment. Objectives. This study was aimed at determining the incidence and clinicopathologic patterns of KS among HIV infected patients in Lagos University Teaching Hospital (LUTH, Nigeria, over a 14-year period: January 2000 to December 2013. Methodology. The materials for this study included patients’ hospital clinical files, duplicate copies of histopathologic reports, and tissue blocks and corresponding archival slides in the Anatomic and Molecular Pathology Department and the HIV/AIDS unit of the Department of Haematology. Results. Within the study period, 182 cases of KS were diagnosed, accounting for 1.2% of all patients managed for HIV/AIDS and 2.99% of solid malignant tumours. The male-to-female ratio and modal age group were 1 : 1.3 and 5th decade, respectively. Most cases (90% had purely mucocutaneous involvement with the lower limb being the commonest site (65.8%. The majority of lesions were plaques (65.8%. Vascular formation was the predominant histologic type seen (43.5%. Conclusion. KS in Lagos followed the same epidemiologic trend as other centers in Nigeria, with an increasing incidence in this era of HIV/AIDS.

  14. Outbreak of 2009 pandemic influenza A(H1N1), Los Lagos, Chile, April-June 2009.

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    Pedroni, E; Garcia, M; Espinola, V; Guerrero, A; Gonzalez, C; Olea, A; Calvo, M; Martorell, B; Winkler, M; Carrasco, Mv; Vergara, Ja; Ulloa, J; Carrazana, Am; Mujica, O; Villarroel, Je; Labrana, M; Vargas, M; Gonzalez, P; Caceres, L; Zamorano, Cg; Momberg, R; Munoz, G; Rocco, J; Bosque, V; Gallardo, A; Elgueta, J; Vega, J

    2010-01-07

    On 17 May 2009, the first two cases of 2009 pandemic influenza A(H1N1) were confirmed in the Metropolitan region (Santiago, Chile). On 6 June 2009, Chile reported 500 confirmed cases, seven severe and two fatal. Because six of the severe cases and the two deaths occurred in the region of Los Lagos in southern Chile, a retrospective study was conducted using data on emergency room visits as well as laboratory viral surveillance, during the period from 1 April to 31 May, in order to establish the date of the beginning of the outbreak. From 1 to 27 June, data were collected in real time, to establish the real magnitude of the outbreak, describe its transmission, clinical severity and secondary attack rates. Confirmed cases, their household contacts and healthcare workers were interviewed. This analysis showed that the outbreak in Los Lagos started on 28 April. By 27 June, a total of 14.559 clinical cases were identified, affecting mostly 5-19 year-olds. The effective reproduction number during the initial phase (20 days) was 1.8 (1.6-2.0). Of the 190 confirmed cases with severe acute respiratory infection, 71 (37.4%) presented a risk condition or underlying illness.

  15. Neurodevelopmental delay among children under the age of three years at immunization clinics in Lagos State, Nigeria - Preliminary report.

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    Bakare, Muideen O; Bello-Mojeed, Mashudat A; Munir, Kerim M; Ogun, Oluwayemi C; Eaton, Julian

    2016-04-29

    Late diagnosis and interventions characterize childhood neurodevelopmental disorders in Sub-Saharan Africa. This has negatively impacted on the prognosis of the children with neurodevelopmental disorders. This study examined the prevalence and pattern of neurodevelopmental delays among children under the age of 3 years attending immunization clinics in Lagos State, Nigeria and also affords opportunity of early follow-up and interventions, which had been documented to improve prognosis. The study involved two stage assessments; which consisted of first phase screening of the children for neurodevelopmental delays in immunization clinics at primary healthcare centers Lagos State, Nigeria and second phase which consists of definitive clinical evaluation and follow-up interventions for children screened positive for neurodevelopmental delays. Twenty seven (0.9%) of a total of 3,011 children under the age of 3 years were screened positive for neurodevelopmental delays and subsequently undergoing clinical evaluation and follow-up interventions. Preliminary working diagnoses among these children include cerebral palsy, autism spectrum disorder trait, nutritional deficiency, Down syndrome and Non-specific neurodevelopmental delay with co-morbid seizure disorder accounting for 33.3%, 14.8%, 18.5%, 7.4% and 25.9% respectively. This is a preliminary report that would be followed up with information on medium and long term intervention phase.

  16. Use of insecticide-treated mosquito nets for children under five years in an urban area of Lagos State, Nigeria.

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    Okafor, I P; Odeyemi, K A

    2012-01-01

    Insecticide-treated nets (ITNs) have proven to be one of the most effective means of reducing malaria morbidity and mortality in children and pregnant women. This study is carried out to determine the practice and determinants of ITN use for children under five years among care givers in an urban area of Lagos State. A community-based, cross sectional study was carried out in Lagos State in April 2007 among three hundred and forty (340) care givers primarily responsible for child care at home. They were selected by a multi-stage sampling method using a pre-tested, interviewer-administered, structured questionnaire. ITN use rate for under-fives was high (61.8%) and this was significantly determined by care giver's marital status (P level of care giver and occupation of head of the household were not significant determinants. There is need for health campaigns on ITNs targeted at unmarried care givers of young children. In addition, we also recommend social marketing of modern family planning methods to reduce family size, thereby increasing chances of ITN use among children less than five years to reduce malaria burden.

  17. Measles Morbidity and Mortality Trend in Nigeria: A 10-Year Hospital-Based Retrospective Study in Lagos State, Nigeria

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    Akeeb O. Bola Oyefolu

    2016-03-01

    Full Text Available Objective: This hospital-based retrospective cohort study was undertaken with a view to determine the epidemiological trend of measles in Lagos State, Nigeria Methods: Medical records of clinically diagnosed measles patients from nine referral public hospitals in Lagos State between 1998 and 2007 were retrieved, transcribed and reviewed. Data were analyzed using standard methods. Results: A total of 35,500 clinically confirmed cases and 835 deaths (case fatality rate = 2.35%/10 years were recorded. The mean incidence was estimated at 19 cases per 100,000 population/year. A consistent seasonality pattern of measles was observed for the study period. The under-fives accounted for the highest reported cases (76.30% while, the under-1 year recorded highest mortality (53.8%. Notable shift of measles vulnerability from under-1year to under-fives was observed. Although there was significant difference between cases and deaths among the age groups (p0.05. Conclusion: This study recorded high incidence and case fatality of measles, which poses serious public health threat. Poor demographic data collection and storage were revealed thus, computerization of medical records for collection, storage and retrieval of data is imperative for adequate planning and control of measles imperil in Nigeria. J Microbiol Infect Dis 2016;6(1:12-18

  18. Survival Strategies and Sustainability of Small and Medium Enterprises in the Oshodi-Isolo Local Government Area of Lagos State

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    Ifekwem Nkiruka

    2016-12-01

    Full Text Available Small and medium enterprises (SMEs play an essential role in the sustainable development of countries. They help in employment generation, industrial production increase, and export, social enrichment as well as political stability. This study investigates the survival strategies and sustainability of SMEs using selected small businesses in the Oshodi-Isolo Local Government Area, Lagos State. It examines the type of growth strategies that SMEs adopt, ascertains what influences their survival strategies as well as the challenges that hinder their growth. Fifty (50 SMEs were randomly sampled. Their owners and managers were interviewed using questionnaires. Data collected were analysed using descriptive statistics and Pearson product–moment correlation coefficient statistics. Our findings reveal that there is a statistically significant relationship between survival strategies and SMEs’ sustainability. The major implication of the findings is that maintaining small but committed and motivated employees is critical in guaranteeing the survival of the SMEs in a volatile economy. The study recommends that there be a need for orientation and educational programmes to change the mindset of business owners to enable them to graduate from sole atomistic proprietor devoid of modern scientific business practice and effective succession to corporate status with an apparatus of modern business management practices and corporate vision. Finally, the study further suggests some imperatives for policy makers concerned with promoting small businesses’ growth and sustainability in the Oshodi-Isolo Local Government Area of Lagos State.

  19. Sistema de humedales artificiales para el control de la eutroficación del lago del Bosque de San Juan de Aragón

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    Víctor Manuel Luna-Pabello

    2014-01-01

    Full Text Available El lago del Bosque de San Juan de Aragón (LBSJA, ocupa una superficie de 12 hectáreas. El lago está eutrofizado debido a que el sistema de lodos activados, conocido como "Tlacos", descarga parcialmente agua tratada dentro del lago y ésta contiene concentraciones de nitrógeno y fósforo que propician el crecimiento de microalgas. En este estudio, se describen los aspectos relevantes sobre el diseño, construcción y arranque operativo de un sistema de tratamiento a base de humedales artificiales (STHA construido en el LBSJA. El STHA ocupa aproximadamente 1 hectárea de superficie, fue diseñado para depurar un promedio de 250 m3d-1 de agua. El sistema consiste de un filtro de agregados calcáreos, un sedimentador, un humedal artificial de flujo subsuperficial (HAFSS, un humedal artificial de flujo superficial (HAFS y un muro gavión filtrante. El agua con la que se alimenta al sistema proviene tanto del efluente de la planta de tratamiento convencional de "Tlacos" (PTAR-Tlacos, como de la contenida en el propio lago. Los resultados muestran 80% de reducción en el contenido de contaminantes. Esto representa una calidad de agua tratada superior a la establecida en la normatividad ambiental para cuerpos acuáticos usados con fines recreativos.

  20. Pérdida de la fertilidad del suelo por erosión hídrica en la cuenca propia del lago de Chapala, Michoacán.

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    Avila Victor, Consuelo Margarita

    2014-01-01

    La cuenca del lago de Chapala contiene el cuerpo de agua dulce más grande de México, que en los últimos veinte años, ha sufrido un extensivo cambio de uso de suelo, provocando la aceleración de procesos erosivos que coadyuvan, por una parte, en la pérdida de fertilidad de sus suelos y por otra, al acelerado proceso de azolvamiento del vaso del lago por acumulación de sedimentos. El objetivo del trabajo fue cuantificar la erosión de suelo por factores hídricos en la cuenca propia del lago de C...

  1. Variabilité hydrologique et vulnérabilité des populations du Lago Janauaca (Amazonas, Brésil Variabilidade hidrológica e vulnerabilidade das populações do Lago Janauaca (Amazonas, BrasilHydrological variability and human vulnerability in Lago Janauaca (Amazonas, Brazil

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    Josyane Ronchail

    2011-03-01

    Full Text Available Étroitement liées à la pulsation saisonnière des crues de l’Amazone, les activités des petits paysans et pêcheurs des várzeas sont particulièrement sensibles aux manifestations plus extrêmes de la variabilité hydrologique. Ce travail propose d’appréhender la vulnérabilité de ces communautés riveraines aux crues et étiages extrêmes autour du Lago Janauaca, près de Manaus, dans un contexte climatique d’intensification du cycle hydrologique. Dans un premier temps nous proposons de caractériser la variabilité hydrologique du Rio Solimões et son impact spatial sur le Lago. Si l’extension du phénomène est frappante, les dynamiques anthropiques sur les rives du lac sont elles aussi importantes. Celles-ci s’expliquent plus par l’ouverture de pistes entre le lac et la BR319, que par l’expansion des cultures traditionnelles qui restent modérée. Enfin, une série d’entretiens menés auprès des riverains dévoile une relation complexe entre les différentes activités des populations et les extrêmes hydrologiques. Les sécheresses y apparaissent comme les perturbations majeures, non seulement à cause de leurs impacts sur les cultures, mais surtout en raison des difficultés qu’elles entraînent pour les mobilités locale et régionale.Intimamente relacionado com o pulso de inundação sazonal do rio Amazonas, as atividades dos agricultores e pescadores das várzeas são particularmente sensíveis aos eventos mais extremos da variabilidade hidrológica. Este artigo tem como objetivo analisar a vulnerabilidade das comunidades ribeirinhas às cheias e às estiagens extremas ao redor do Lago Janauaca, próximo de Manaus, em um contexto de intensificação do ciclo hidrológico. Inicialmente, propomos uma caracterização da variabilidade hidrológica do Rio Solimões e do seu impacto espacial sobre o lago. As dinâmicas antrópicas às margens do lago são importantes também. Elas são mais decorrentes pela abertura

  2. Evaluations of groundwater contamination by leachates around Olusosun open dumpsite in Lagos metropolis, southwest Nigeria.

    Science.gov (United States)

    Aboyeji, Olatunji Sunday; Eigbokhan, Stephen Femi

    2016-12-01

    A major cause of groundwater pollution in urban areas is contamination by leachates emanating from municipal solid waste dumpsites. The study evaluated the quality of water of selected boreholes and wells around Olusosun open solid waste dumpsite in Lagos metropolis, using water quality index (WQI) rating and geospatial techniques. Water samples were randomly collected from fifteen boreholes and five wells downslopes of the dumpsite. The samples were analysed for the physico-chemical parameters and heavy metals. Factor Analysis was employed to analyse the information content of the water quality indicators to determine their appropriateness for indexing. The spatial distribution of the WQIs determined using Inverse Distance Weighting (IDW) interpolation procedure. Results showed that the waters were generally acidic with 85% of pH values below the range suggested by WHO for drinking water. All samples contained concentration of dissolved oxygen (DO) in quantities higher than the recommended limit of 2.0 mg/l (average = 4.97 mg/l), while 40% of the samples contained concentration of K above the recommended limit. The concentration of heavy metals was generally low. The major cations (Mg, Na, and K) were highly positively correlated, and were positively correlated with pH, TA, TAL, TH and Cl. Negative correlations were observed between TDS, NO3(-) and PO4(3-); NO3(-) and Ag; and DO with the heavy metals. Eighteen parameters consisting of pH, EC, TDS, TA, TAL, TH, Cl, NO3(-), PO4(3-), Mg, Na, K, Zn, Mn, Fe, Cd, Ag and Pb were found to be the main indicators of groundwater pollution caused by landfill leachate percolation. Evaluation of the WQIs indicated that 35% of the water samples were unsuitable for consumption, while 15%, 15% and 35% were in the good, very good and excellent categorises, respectively. The degree of suitability of the borehole and well waters was closely related to proximity to the dumpsite. It is imperative that appropriate remediation

  3. Clinical profile of parkinsonism and Parkinson's disease in Lagos, Southwestern Nigeria

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    Ojo Oluwadamilola O

    2010-01-01

    Full Text Available Abstract Background Current data on the pattern of parkinsonism and Parkinson's disease in Nigerians are sparse. This database was designed to document the clinical profile of PD in Nigerians, and compare this to prior observations. Methods A database of patients presenting to the Neurology out-patients clinic of the Lagos University Teaching Hospital was established in October 1996. Demographic and clinical data at presentation (disease stage using Hoehn and Yahr scale; 'off' state severity on the Unified Parkinson's disease Rating Scale were documented for patients diagnosed with parkinsonism between October 1996 and December 2006. Cases were classified as Parkinson's disease or secondary parkinsonism (in the presence of criteria suggestive of a secondary aetiology. Results The hospital frequency of parkinsonism (over a 2-year period, and relative to other neurologic disorders was 1.47% (i.e. 20/1360. Of the 124 patients with parkinsonism, 98 (79.0% had PD, while 26 (21.0% had secondary parkinsonism. Mean age (SD at onset of PD (61.5 (10.0 years was slightly higher than for secondary parkinsonism (57.5 (14.0 years (P = 0.10. There was a male preponderance in PD (3.3 to 1 and secondary parkinsonism (2.7 to 1, while a positive family history of parkinsonism was present in only 1.02% (1/98 of PD. There was a modestly significant difference in age at onset (SD of PD in men (60.3 (10.4 compared to women (65.2 (7.9 (T = 2.08; P = 0.04. The frequency of young onset PD (≤ 50 years was 16.3% (16/98. The mean time interval from onset of motor symptoms to diagnosis of PD was 24.6 ± 26.1 months with majority presenting at a median 12 months from onset. On the H&Y scale, severity of PD at presentation was a median 2.0 (range 1 to 4. PD disease subtype was tremor-dominant in 31 (31.6%, mixed 54 (55.1% and akinetic-rigid 14 (14.3%. Hypertension was present as a co-morbidity in 20 (20.4%, and diabetes in 6 (6.12%. Conclusions The clinical profile of PD in

  4. Autism spectrum disorder in a community-based sample with neurodevelopmental problems in Lagos, Nigeria

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    Yewande O. Oshodi

    2017-01-01

    Full Text Available Autism Spectrum Disorder (ASD is a globally prevalent neurodevelopmental disorder for which early diagnosis and intervention is the mainstay of management. In the African continent, limited data is available regarding the non-clinic based samples. Lack of information available to caregivers and inadequate skilled manpower often limit early detection and access to the few available though under resourced services in the community. Community based screening can be an important drive to create awareness and improve information dissemination regarding services available for those living with this disorder. This is a descriptive cross-sectional study utilizing data obtained from participants of a community-based autism screening exercise. The surveillance exercise was part of the annual Orange Ribbon initiative for autism awareness and screening held in 2014. Data was obtained from 85 participants involved in the Autism Surveillance screening exercise within the Lagos community. Community public service radio announcements state wide and word of mouth were used to invite and enroll eligible participants to the screening and consultation exercise. A second stage screening and a brief sociodemographic questionnaire followed by a third stage clinical interview and evaluation using the Diagnostic and Statistical Manual of Mental Disorders - 5 Edition (DSM 5 were used. Appropriate consultation and referrals to services in the community were given. Participants had a mean age of 7.53 years (SD 4.35. Twenty-nine (34.5% met the diagnosis of ASD. Other diagnosis included attention deficit hyperactivity disorder (ADHD, language and speech disorder, intellectual disability (8.3% and learning disorders (9.5%. Main health concerns to caregivers were poor language development in all (100%, of which 11 (40.7% were non-verbal; gaze avoidance was seen in 14 (48.3% and challenging behavior in 12 (42.9%. Comorbidities included seizure disorders (3.4% and ADHD (6

  5. Biodiversity Measurement Using Indices Based on Hyperspectral Reflectance on the Coast of Lagos

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    Omodanisi, E. O.; Salami, A. T.

    2013-12-01

    Hyperspectral measurements provide explicit measurements which can be used in the analysis of biodiversity change. This study was carried out in the coastal area of Lagos State, Nigeria. The objective of this study was to determine if gasoline seepage affects vegetation species distribution and reflectance; with the view to analyzing the vegetation condition. To evaluate the potential of different reflectance spectroscopy of species, the ASD Handheld2 Spectrometer was used. Three identified impacted plots of 30m by 30m were selected randomly and a control plot established in relatively undisturbed vegetated areas away from but perpendicular to the source of seepage. Each identified plot and the control consisted of five transects and measurement were taken at every 2m with about four reflectance measurement per sample point, to average out differences in reflectance as a result of different leaf angles. The radiance output of the spectrometer was converted into reflectance using the reflectance of a white reference over a standardized white spectralon panel. Indices such as Normalized Differential Vegetation Index, RedEdge Normalized Difference Vegetation Index, Soil Adjusted Vegetation Index, Ratio Vegetation Index and Volgelmann RedEdge Index 1 were calculated to accurately estimate the chlorophyll content in the vegetation within optimal band wavelength. Shannon-Weiner's index, Spearman's rank correlation and Analysis of Variance were used to analyze the data. Cocos nucifera was observed to be the most dominant species with a relative abundance of 47.27% while Ananas comosus recorded the lowest relative abundance of 21.8%. In the control plot, Cocos nucifera had the highest relative abundance of 42.3% and Mangifera indica with the least relative abundance of 16.7%. The relationship between the indices and chlorophyll content of the vegetation were significantly higher at (p>0.01) for all the indices in all the plots; however, RedEdgeNDVI and VOG1 indices had the

  6. Juvenile delinquency among students of an approved sheltered girls' school in Lagos, Nigeria.

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    Ebuehi, O M; Omogbemi, K B

    2011-01-01

    Juvenile delinquency is the involvement of a child younger than 18 years in behavior that violates the law. Its cost in terms of human potential, public safety and tax expenditures can be very high. Research that assesses how and why children become delinquent is a sound investment, because it can provide the foundation for effective intervention in its prevention and control. The study is to determine the factors associated with juvenile delinquency. A cross-sectional study was conducted among sixty (60) students of the approved sheltered girls' school, Idi-Araba, Lagos, using a structured interviewer-administered questionnaire. Findings revealed that the respondents were within the ages of 10-18 years with a mean age of 14.2 +/- 2.0 years, 70% had attained primary school education. Of the 53.3% that dropped out of school, 65.6% did so from financial problems, 6.3% as a result of poor performance and peer pressure accounted for 28.1%. A total of 71.7% of the students were brought to the school by the police; 52.5% on account of roaming while lack of parental control, stealing, robbery and fighting accounted for 16.9%, 11.9%, 10.2%, and 8.5% respectively. Majority (58.6%) of the students had both parents alive while 12.1% had both parents deceased. About 25 (41.7%) of the respondents admitted to committing a crime out of which 88% was stealing, 4% were involved in armed robbery and 8% in house breaking. Of all the socio-demographics characteristics of the respondents explored, only their educational level was found to be significantly associated (p = 0.0197) with criminal behaviour. Mother's educational level (p = 0.0245), maternal alcohol consumption (p = 0.0173) and kind of treatment (0.0245) received from step mums were significantly associated with criminal behaviour. Poor parental supervision, poverty and peer pressure played key roles in delinquency among the juveniles. An effective prevention and control of juvenile delinquency will require collective

  7. Effect of consumer behaviour and perception on car purchase decision: Empirical Evidence from Lagos - Nigeria

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    Ph. D. Samuel Taiwo Akinyele

    2012-05-01

    Full Text Available In recent days Nigeria is witnessing a change in consumerism. The market is now predominantly consumer driven. The focus is shifting for product based marketing to need based marketing. Consumer is given many options to decide. Passenger car segment is no exception to this general trend. An effective market communication is imperative for reaching the target audience. So it is important that we study the consumer perceptions and behaviour of the car owners which will give us feedback on how marketing strategies can be worked. Victoria Island in Lagos State, which is in the Southern part of Nigeria, has a progressive and growing market for cars. This area was selected for this study.Pre-testing was done by an interview schedule which was developed and administered to a convenient sample of twenty five car owners. A simple random sampling technique was adopted in the study to select the sample respondents. As the size of the universe is restricted, the study has been conducted on the respondents who are the owners of all the segments of passenger cars. A total of 350 interview schedules were prepared and out of this, only 327 interview schedules were filled up and collected. Data were collected through an interview schedule regarding reception of the respondents on the usage of cars. The following tools were used in testing the hypotheses and in the analysis of data. Descriptive statistical tools such as percentage, mean, median and standard deviation have been used to describe the profiles of consumers, preferred product attributes and level of satisfaction. ANOVA, T- Test and F- test have been used to test the significant differences between the groups of respondents in their perception and satisfaction for selected independent variable like age, sex and income. Chi-square test has been used to test the association between the consumer demographic characteristics and preferred product attributes and satisfaction. Multiple regression analysis has

  8. Spectrum of musculo-skeletal disorders in sickle cell disease in Lagos, Nigeria

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    Ogo Chidiebere N

    2010-01-01

    Full Text Available Abstract Background Sickle cell anemia (SCA is a common genetic disease in Nigeria. Past studies from West Africa focused on isolated aspects of its medical and surgical presentations. To the best of our knowledge, the musculo-skeletal presentations amongst Nigerians with SCA have not been documented in a single all encompassing study. This work aims to prospectively document the musculo-skeletal disease burden among SCA patients. Methods In a prospective study of 318 consecutive patients with genotype-confirmed SCA at the Lagos University Teaching Hospital (LUTH, the musculo-skeletal pathologies, anatomic sites, grade of disease, age at presentation and management outcome were recorded over a one-year period. Data obtained were analyzed using Epi-Info software version 6.0. Data are presented as frequencies (% and mean values (SD as appropriate. Results The HbSS genotype occurred in 296 (93.0%, while 22 (7.0% were HbSC. 100 (31.4% patients with average presenting haemoglobin concentration of 8.2 g/100 ml in the study group, presented with 131 musculo-skeletal pathologies in 118 anatomic sites. Osteomyelitis 31 (31% and septic arthritis 19 (19% were most commonly observed in children less than 10 years. Skin ulcers and avascular necrosis (AVN occurred predominantly in the older age groups, with frequencies of 13 (13.0% and 26 (26.0% respectively. 20 (71.5% of diagnosed cases of AVN presented with radiological grade 4 disease. The lower limbs were involved in 84 (71.1% of sites affected. Lesions involving the spine were rare 11 (0.9%. Multiple presentations occurred in 89 (28.0% of patients; 62 (69.7% of which were children below 10 years. Conclusions Musculo-skeletal complications are common features of sickle cell anaemia seen in 31.4%. Infectious aetiologies predominate with long bones and joints of lower limbs more commonly affected by osteomyelitis and septic arthritis. Healthcare providers managing SCA should be aware of the potential

  9. Assessment of medical waste management in seven hospitals in Lagos, Nigeria

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    Olufunsho Awodele

    2016-03-01

    Full Text Available Abstract Background Medical waste (MW can be generated in hospitals, clinics and places where diagnosis and treatment are conducted. The management of these wastes is an issue of great concern and importance in view of potential public health risks associated with such wastes. The study assessed the medical waste management practices in selected hospitals and also determined the impact of Lagos Waste Management Authority (LAWMA intervention programs. A descriptive cross-sectional survey method was used. Methods Data were collected using three instrument (questionnaire, site visitation and in –depth interview. Two public (hospital A, B and five private (hospital C, D, E, F and G which provide services for low, middle and high income earners were used. Data analysis was done with SPSS version 20. Chi-squared test was used to determine level of significance at p < 0.05. Results The majority 56 (53.3 % of the respondents were females with mean age of 35.46 (±1.66 years. The hospital surveyed, except hospital D, disposes both general and medical waste separately. All the facilities have the same process of managing their waste which is segregation, collection/on-site transportation, on-site storage and off–site transportation. Staff responsible for collecting medical waste uses mainly hand gloves as personal protective equipment. The intervention programs helped to ensure compliance and safety of the processes; all the hospitals employ the services of LAWMA for final waste disposal and treatment. Only hospital B offered on-site treatment of its waste (sharps only with an incinerator while LAWMA uses hydroclave to treat its wastes. There are no policies or guidelines in all investigated hospitals for managing waste. Conclusions An awareness of proper waste management amongst health workers has been created in most hospitals through the initiative of LAWMA. However, hospital D still mixes municipal and hazardous wastes. The treatment of waste

  10. Incidence and risk factors for caesarean wound infection in Lagos Nigeria

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    Gab-Okafor Chidinma V

    2009-09-01

    Full Text Available Abstract Background Post caesarean wound infection is not only a leading cause of prolonged hospital stay but a major cause of the widespread aversion to caesarean delivery in developing countries. In order to control and prevent post caesarean wound infection in our environment there is the need to access the relative contribution of each aetiologic factor. Though some studies in our environment have identified factors associated with post caesarean wound infection, none was specifically designed to address these issues prospectively or assess the relative contribution of each of the risk factors. Findings Prospective multicentre study over a period of 56 months in Lagos Nigeria. All consecutive and consenting women scheduled for caesarean section and meeting the inclusion criteria were enrolled into the study. Cases were all subjects with post caesarean wound infection. Those without wound infection served as controls. Data entry and analysis were performed using EPI-Info programme version 6 and SPSS for windows version 10.0. Eight hundred and seventeen women were enrolled into the study. Seventy six (9.3% of these cases were complicated with wound infection. The proportion of subjects with body mass index greater than 25 was significantly higher among the subjects with wound infection (51.3% than in the subjects without wound infection (33.9% p = 0.011. There were also significantly higher proportions of subjects with prolonged rupture of membrane (p = 0.02, prolonged operation time (p = 0.001, anaemia (p = 0.031 and multiple vaginal examinations during labour (0.021 among the women that had wound infection compared to the women that did not have wound infection. After adjustment for confounders only prolonged rupture of membrane (OR = 4.45, prolonged operation time (OR = 2.87 and body max index > 25 (2.34 retained their association with post caesarean wound infection. Conclusion Effort should be geared towards the prevention of prolonged

  11. Aumento de dorso nasal con implante blando de tejido conectivo laxo y cartílago troce

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    Mariana Vásquez-García

    Full Text Available Introducción y Objetivo: Están descritas innumerables técnicas para el aumento del dorso nasal. Los injertos autólogos son el material preferido en la reconstrucción nasal debido a su biocompatibilidad y a su menor riesgo de infección y exposición. La técnica de cartílago troceado envuelto en fascia temporal se ha popularizado porque evita la visualización de los injertos a través de la piel del dorso nasal. Nuestro estudio tiene como objetivo demostrar que también el tejido conectivo laxo retroauricular es una envoltura útil para conformar con el cartílago troceado un implante blando que aumente el dorso nasal, proporcionando un resultado estético natural. Material y Método: Realizamos un estudio retrospectivo, entre diciembre de 2012 a diciembre de 2015 con 15 pacientes sometidos a aumento de dorso nasal con cartílago troceado de septum y concha auricular envuelto en tejido conectivo laxo retroauricular, utilizando la vía de rinoplastia externa. Evaluamos los resultados de forma subjetiva con un cuestionario entregado a los pacientes y observando las fotos pre y postoperatorias a corto, medio y largo plazo. Objetivamente medimos las alturas del dorso nasal pre y postoperatoriamente. Resultados: Todos los pacientes presentaron resultados muy satisfactorios. El valor promedio de aumento del dorso nasal a los 3 meses de postoperatorio en nasion fue de 0.38 cm, en rinion de 0.39 cm y en suprapunta de 0.41 cm, manteniéndose iguales valores a los 6, 12 y 18 meses. Conclusiones: Destacamos los beneficios de la envoltura con tejido conectivo laxo retroauricular para cubrir de forma natural las irregularidades del dorso nasal, eliminando el estigma de nariz operada (fibrosis y cicatrización anómala. Su viabilidad en la zona receptora (dorso nasal lo hace muy recomendable para la corrección de deformidades de esta zona. Es por ello que recomendamos su uso como alternativa para corregir hundimientos de dorso nasal de origen

  12. Serpentinite-driven Exhumation of the UHP Lago di Cignana Unit in the Fossil Alpine Plate Interface

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    Scambelluri, M.; Gilio, M.; Angiboust, S.; Godard, M.; Pettke, T.

    2015-12-01

    The Lago di Cignana Unit (LCU) is a coesite- [1] and diamond-bearing [2] slice of oceanic-derived eclogites and metasediments recording Alpine UHP metamorphism at 600 °C-3.2 GPa (~110 km depth) [3]. The LCU is tectonically sandwiched between the eclogitic Zermatt-Saas Zone (ZSZ; 540 °C-3.2 GPa) [4] and the blueschist Combin Zone (400 °C-0.9 GPa) [5] along a tectonic structure joining HP units recording a ~1.2 GPa (40 km) pressure difference. So far, the ZSZ has been attributed to normal HP conditions and the mechanism driving exhumation and accretion of the LCU in its present structural position is not fully understood.We performed petrography and bulk-rock trace element analyses of rocks from LCU and ZSZ serpentinites. We observed that, while serpentinites in the core of the ZSZ show normal subduction zone trace elements and REE's patterns, the Ol+Ti-chu+Chl veins and host serpentinites enveloping the LCU are strongly enriched in sediment-derived fluid-mobile elements (U, Th, Nb, Ta, Ce, Y, As, Sb) and REE's: their patterns well match those of the closely associated LCU-UHP rocks.The presence of extremely enriched Ol+Ti-chu+Chl veins in the serpentinites at direct contact with the UHP Lago di Cignana Unit suggests that fluid exchange between serpentinite and LCU crustal rocks occurred at peak metamorphic conditions. Their coupling therefore occurred during subduction burial and/or peak UHP conditions. As such, the buoyancy force originating from the relatively light serpentinites fuelled the exhumation of the Lago di Cignana Unit. In this contest, the tectonic contact between the Zermatt-Saas Zone and the Combin Zone evolved into a true tectonic plate interface surface.1. Reinecke (1998). Lithos 42(3), 147-189; 2. Frezzotti et al. (2011). Nat. Geosci. 4(10), 703-706; 3. Groppo et al. (2009). J. Metam. Geol. 27(3), 207-231; 4. Angiboust et al. (2009). Terra Nova 21(3), 171-180; 5. Reddy et al. (1999). J. Metam. Geol. 17, 573-590.

  13. Seroprevalence of Toxoplasma gondii IgG antibody in HIV-infected patients at the Lagos University Teaching Hospital

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    Osunkalu VO

    2011-09-01

    Full Text Available Vincent O Osunkalu1, Sulaimon A Akanmu1, Nkolika J Ofomah1, Igwebuike V Onyiaorah2, Adewumi A Adediran1, Ralph O Akinde3, Ifeanyi A Onwuezobe41Department of Haematology and Blood Transfusion, College of Medicine Idi-Araba, Lagos, Nigeria; 2Department of Histopathology, Nnamdi Azikiwe University, Nnewi Campus, Lagos, Nigeria; 3Department of Morbid Anatomy, College of Medicine Idi-Araba, Lagos, Nigeria; 4Department of Microbiology, University of Calabar, NigeriaBackground: Toxoplasmosis is caused by infection with a ubiquitous intracellular protozoan parasite, Toxoplasma gondii. With the advent of the HIV pandemic in Nigeria, toxoplasmic encephalitis has become one of the more frequent opportunistic infections and the most commonly implicated cause of focal brain lesions complicating the course of AIDS.Objectives: This study was conducted to compare the pattern of seroprevalence of T. gondii (Toxo-IgG antibodies among HIV-infected persons presenting with neurological complications and those without.Materials and methods: Plasma specimens collected from 380 subjects were tested for Toxo-IgG antibodies by enzyme immunoassay technique and CD4 estimation by flow cytometry. Close-ended questionnaires were applied to all respondents to collect relevant data, with ethical approval from the hospital ethical committee. Plasma was obtained from two study groups comprising 300 HIV-positive respondents without neurological presentations, and 80 HIV-positive respondents with neurological complications.Results: Seroprevalence of Toxo-IgG antibodies was 58% in the HIV-positive study group without neurological complications (of these, 79.2% were males and 38.5% were females and 40% in the study group with neurological complications (46.2% of these were males and 28.6% were females. The overall seroprevalence of Toxo-IgG antibodies among the HIV-positive respondents (with and without neurological complications was 54.2% (206 of 380. Seroprevalence of Toxo

  14. Murciélagos de Guanajuato: Perspectiva Histórica y Actualización de su Conocimiento Murciélagos de Guanajuato: Perspectiva Histórica y Actualización de su Conocimiento

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    Óscar Sánchez

    2012-02-01

    Full Text Available This paper reviews the chiropteran fauna of the state of Guanajuato, principally in a historical perspective but with the additional aim of bringing the fi eld up to date. Starting with Dr. Alfredo Dugès’ nineteenth-century works, the available literature is surveyed through 2005. In addition, the synonymy, or scientific nomenclature for types of animals, is revised and updated.The greater mastiff bat (Promops centralis is here recorded in Guanajuato for the first time, and a consolidated list of species is provided; to date, 17 are known to be represented within the state. A brief critique of the current extent of knowledge about the bats of Guanajuato is included, as well as commentary on the importance of furthering this knowledge, both in the near and medium future. En esta contribución se presenta una revisión de la fauna de quirópteros del estado de Guanajuato, desarrollada principalmente con una perspectiva histórica aunque también con el propósito de iniciar la puesta al día de su conocimiento. Se revisó la literatura disponible desde la época y obra de Alfredo Dugès en el Siglo XIX hasta 2005. También se revisó la sinonimia, con lo que aquí se actualiza la nomenclatura científi ca. Se registra al murciélago mastín mayor (Promops centralis por primera vez para Guanajuato y se provee una lista consolidada de las especies; 17 hasta el momento. Se hace un breve diagnóstico del estado del conocimiento sobre los murciélagos de Guanajuato y se comenta sobre la importancia de mejorarlo en los plazos corto y medio.

  15. The agropecuarian sector in Los Lagos region, and the paradigm "Chile power food": challenges for a national agrarian policy

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    Sandra Ríos Núñez

    2014-08-01

    Full Text Available The restructuring of the economic model in Chile in the mid- seventies hit all productive fields and the agropecuarian sector was no exception. Thus started the beginning of the "Agricultural export Age" that fostered productive guidelines with clear competitive advantages in international markets. The Chilean agricultural paradigm has been characterized by functioning on the basis of low wages, availability of labor and favorable exchange rate. In 2006, under this scenario, the public policy called "Chile Power Food 2020" was implemented, which seeks to reinforce the above formula. This initiative considers growth strategies which make bimodal agrarian structure, present in the country, invisible. To the above an added aggravating factor is that territories (such as Los Lagos Region in southern Chile with traditional productive orientations (specifically cattle have clearly vulnerable positions, especially in those producer groups which are characterized by different rationales to run business

  16. A study on job satisfaction among clinical and non-clinical hospital staff in a teaching hospital in Lagos, Nigeria.

    Science.gov (United States)

    Coker, O O; Coker, A O; Onuoha, B

    2011-12-01

    Previous studies had demonstrated that continuous and effective productivity of hospital staff are linked to job satisfaction and only those who are satisfied with their job can be maximally effective and productive. This cross-sectional descriptive survey was designed to determine the levels of job satisfaction among various groups of health care professionals working in a teaching hospital in Lagos, Nigeria. Two hundred clinical and non-clinical hospital staff were invited to take part in the study. They completed a sociodemographic questionnaire and the Job Descriptive Index (JDI). The results indicated that majority clinical and non-clinical staff were satisfied with their jobs as regards the parameters of the JDI compared with those not satisfied with their jobs. The government and health policy makers should continue to pay attention to boost job morale and satisfaction of medical health workers to continue to make them to be satisfied with their job.

  17. Re-examination of Advertising Effectiveness in Selected Soft Drink Companies in Lagos State, Nigeria: A Descriptive Analysis

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    Adefulu Adesoga

    2015-06-01

    Full Text Available The paper reexamined the effectiveness of Advertising in Selected Soft Drink Companies in Lagos, Nigeria. The study linked with past researches through its extensive conceptual, theoretical and empirical literature review. The methodology adopted was survey research design. The study population was the staff in marketing positions in the selected companies. Questionnaire was administered on samples from the selected Companies. The weighted means and percentage values of the respondents were used in the analysis and decision making. The findings showed the need for a better understanding of organizational factors that determine the commitment of organizational resources to drive achievement of advertising goals because of its impacts on customers’ awareness and product adoption.. The study concluded that advertising is a potent and veritable tool for achieving marketing goals. The study recommended that firms should identify the best advertising program to achieve its advertising goals. By implication, marketing decision maker should incorporate advertising expenditures in the marketing budget in appreciation of its role.

  18. Mothers’ Characteristics and Immunization Status of Under-Five Children in Ojo Local Government Area, Lagos State, Nigeria

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    John Lekan Oyefara

    2014-08-01

    Full Text Available Immunization is a key element of public health, a pre-requisite to social and economic development, and a crucial element that enables every child to reach his or her full physical and intellectual potential. It is a prevention against various child killer diseases such as tuberculosis (Bacillus Calmette Gurine [BCG], tetanus, whooping cough, diphtheria, poliomyelitis, hepatitis B, yellow fever, and measles. The main objective of this study is to examine the relationships between household characteristics, social mobilization, and immunization status of under-5 children in Lagos metropolis, Nigeria. To achieve this objective, a non-experimental research design was adopted. The research method utilized in the design is cross-sectional survey. The sampled study location is Ojo local government area of Lagos State. A total of 265 respondents were randomly sampled for the survey using multistage random sampling technique. Generated data were analyzed using univariate, bivariate, and multivariate statistical techniques. The findings of the study reveal significant relationship between women’s level of education and full immunization of their children. Specifically, 38.9% of women without any formal education had fully immunized their children compared with 86.9% of women with secondary education. In addition, 90.9% of women who assessed themselves to be average on wealth assessment compared with 45.3% of the poor had fully immunized their children. On the basis of the study’s findings, there is a need for a holistic approach that will involve all social classes and communities on child immunization to have 100% immunization coverage and minimal child morbidity and mortality in all areas of the city.

  19. Impact of maternal mental health on maternal-child interaction in attendees in a community health clinic in Lagos, Nigeria

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    Motunrayo A Oyelohunnu

    2016-01-01

    Full Text Available Background: Maternal mental health, in particular depression, has been found to negatively impact mother-child interaction, attachment, stimulation, growth, and many important aspects of development in the young child. These early deficits if sustained and unattended may have negative immediate and long-term consequences on the outcomes in the child. The study aimed to assess psychological distress and postpartum depression in mothers, and their relationship to the mother-child interaction. Methodology: This is a descriptive clinic-based study. Eligible and consenting mothers are attending the child immunization clinic in the Lagos University Teaching Hospital, Lagos, Nigeria participated. Consecutive mothers completed the interview questionnaires independently while those who were not literate had the questionnaires administered by trained interviewers. Instruments used were a sociodemographic proforma, the General Health Questionnaire-12, Mother and Infant Attachment Scale (MIAS, and the Zung Depression Scale. Results: In total, ninety-eight women were enrolled, 66.3% were aged between 26 and 35 years, and mean age of 30.9 years (±5.1 standard deviation. Most were aged between 26 and 35 years (66.3%. Over 90% had at secondary school education or more. Over a 10 th (13.3% was unemployed and 96% married. The children were aged between 6 weeks and 1 year, males (63.1%, and females (46.9%, and the majority were born by spontaneous vaginal delivery (82.7%. A 10 th (10.2% of the women had probable psychiatric morbidity, 14.3% had scores suggestive of postpartum depression, and 18 (16.3% scored below average attachment in interaction with their children on the MIAS. There was an association found between reduced maternal-child attachment interaction and maternal depression (P ≤ 0.05. Conclusions: Emotional disorders, such as depression, in mothers can be associated reduced maternal-child interaction. It is important that integrated mental health

  20. Technical quality of delivery care in private- and public-sector health facilities in Enugu and Lagos States, Nigeria.

    Science.gov (United States)

    Hirose, Atsumi; Yisa, Ibrahim O; Aminu, Amina; Afolabi, Nathanael; Olasunmbo, Makinde; Oluka, George; Muhammad, Khalilu; Hussein, Julia

    2018-06-01

    Private-sector providers are increasingly being recognized as important contributors to the delivery of healthcare. Countries with high disease burdens and limited public-sector resources are considering using the private sector to achieve universal health coverage. However, evidence for the technical quality of private-sector care is lacking. This study assesses the technical quality of maternal healthcare during delivery in public- and private-sector facilities in resource-limited settings, from a systems and programmatic perspective. A summary index (the skilled attendance index, SAI), was used. Two-staged cluster sampling with stratification was used to select representative samples of case records in public- and private-sector facilities in Enugu and Lagos States, Nigeria. Information to assess criteria was extracted, and the SAI calculated. Linear regression models examined the relationship between SAI and the private and public sectors, controlling for confounders. The median SAI was 54.8% in Enugu and 85.7% in Lagos. The private for-profit sector's SAI was lower than and the private not-for-profit sector's SAI was higher than the public sector in Enugu [coefficient = -3.6 (P = 0.018) and 12.6 (P private for-profit sector's SAI was higher and the private not-for-profit sector's SAI was lower than the public sector [3.71 (P = 0.005) and -3.92 (P private for-profit providers' care was poorer than public providers where the public provision of care was weak, while private for-profit facilities provided better technical quality care than public facilities where the public sector was strong and there was a relatively strong regulatory body. Our findings raise important considerations relating to the quality of maternity care, the public-private mix and needs for regulation in global efforts to achieve universal healthcare.

  1. Vulnerabilidade à eutrofização de dois lagos tropicais de climas úmido (Cuba e semiárido (Brasil

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    Mario Cesar Wiegand

    Full Text Available RESUMO: Este artigo compara o estado de eutrofização e suas prováveis causas em dois reservatórios tropicais, um em clima úmido (La Juventud, Cuba e o outro em clima semiárido (Marengo, Brasil. Após estimar o estado trófico dos dois reservatórios nas estações chuvosa e seca, avaliou-se a influência hidrológica e de uso do solo sobre o grau de trofia dos lagos. Concluiu-se que os lagos são, em média, mesotróficos. Porém, o lago tropical semiárido encontra-se eutrófico, enquanto que o úmido está oligotrófico. Considerando que há similitude entre os usos do solo nas duas bacias e que, na estação chuvosa, o aporte de nutrientes na bacia úmida é consideravelmente superior ao da semiárida, o maior estado trófico da bacia seca surpreende. A variável que melhor explica esse fenômeno é o tempo de residência da água, que influencia diretamente o tempo de residência do fósforo no lago. O elevado tempo de residência da água na bacia semiárida (três vezes superior ao do lago úmido deve-se tanto ao reduzido coeficiente de escoamento superficial (93 versus 595 mm anuais na bacia úmida quanto à excessiva evaporação da água armazenada no reservatório seco (quatro vezes superior à do reservatório úmido. Esses resultados indicam que lagos semiáridos são mais vulneráveis à eutrofização que os úmidos nos períodos de estio e que, portanto, o manejo de suas bacias deve ser mais restritivo à produção de nutrientes.

  2. Ensamble de crustáceos bentónicos en un lago salino tropical Benthic crustaceans assemblage in a tropical, saline lake

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    Ma. del Carmen Hernández

    2010-10-01

    Full Text Available El presente trabajo reconoce la composición, estructura y distribución espacial del ensamble de crustáceos bentónicos de Alchichica, un lago salino tropical ubicado en el extremo oriental del altiplano mexicano. El lago presenta una riqueza taxonómica de crustáceos bentónicos compuesta por 1 anfípodo (Hyalella azteca, 1 isópodo (Caecidotea williamsi y 2 ostrácodos (Limnocythere inopinata y Candona sp.. Comparada con otros lagos tropicales, la riqueza de especies es reducida. A pesar de lo anterior, es importante mencionar el grado elevado de endemismo representado por C. williamsi, recientemente descrita para el lago Alchichica; adicionalmente, es factible que tanto Candona como H. azteca sean especies nuevas y endémicas del lago. Los crustáceos bentónicos se distribuyen desde la zona litoral hasta la zona más profunda del lago (62 m con abundancias y riqueza taxonómica variables. Los ostrácodos fueron los crustáceos que con mayor frecuencia se recolectaron en el lago, en la zona litoral, en el talud, y en la zona profunda de la que son habitantes exclusivos. Los anfípodos constituyeron el segundo grupo en abundancia de la zona litoral y talud y estuvieron ausentes en la zona profunda. Los isópodos sólo se encuentran asociados a los depósitos de tufa, hábitat característico del lago que se extiende a lo largo del talud, por lo que con las técnicas de muestreo tradicional empleadas en el presente estudio no fueron capturados. En este ensamble de crustáceos predominan las especies de desarrollo directo y con posiciones tróficas que incluyen componentes herbívoros (H. azteca, omnívoros (C. williamsi y bacterívoros (L. inopinata y Candona sp..This work acknowledges the composition, structure and spatial distribution of the benthic crustaceans assemblage of Alchichica, a tropical saline lake located in the easternmost portion of the Mexican highlands. The benthic crustaceans' assemblage was comprised by 1 amphipod

  3. Utilización de sistemas pasivos para mejorar la calidad de las aguas en lagos mineros: Aplicación a un caso de estudio

    OpenAIRE

    Bros Miranda, María Teresa

    2007-01-01

    La primera parte de la tesis, es una revisión del estado sobre la formación de lo lagos de mina y todo el conjunto de procesos que se derivan de su formación y evolución. Se presentan una serie de métodos de tratamiento haciendo principal hincapié en la aplicación de sistemas pasivos para mejorar la calidad del as agua en los lagos mineros. La segunda parte de la tesis se dedica a estudiar un caso particular emplazado en la Mina de Meirama, en la cual se prevé la inundación del actual h...

  4. Algoritmo del murciélago virtual en el desarrollo de la Integral de Duhamel para sistemas estructurales con un grado de libertad

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    Sergio Vanegas

    2013-01-01

    Full Text Available En este artículo se propone el uso del algoritmo de optimización de murciélagos virtuales para resolver la Integral de Duhamel en sistemas dinámicos con un grado de libertad. Se desarrollaron ejercicios a titulo demostrativo, para el cálculo de máximos globales. Los resultados fueron muy comparables, tanto en precisión, como en exactitud frente a aquellos obtenidos por otros métodos de cálculo. Se utilizó igualmente el acelerograma del sismo de Chile (2010, para el que se reporta la respuesta dinámica y el desplazamiento máximo. Se variaron para estos ejemplos la cantidad de murciélagos virtuales notándose su influencia sobre el tiempo de computación.

  5. Distribución y abundancia de murciélagos en bosques con diferente grado de intervención en el Parque Nacional Natural Gorgona (Colombia

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    Oscar Enrique Murillo-García

    2014-02-01

    Full Text Available Se cuantificó la variación de la comunidad de murciélagos en bosques con diferente grado de intervención en el Parque Nacional Natural Gorgona. Para esto se realizaron capturas en tres zonas (dos sitios en cada zona durante tres eventos de muestreo. El análisis de datos consideró la detección imperfecta, permitiendo realizar una inferencia confiable acerca de los cambios en presencia, abundancia y riqueza entre tipos de coberturas. Los resultados evidenciaron una considerable variación en detectabilidad relacionada con variaciones entre gremios tróficos y tipos de cobertura. Las tasas de presencia aumentaron al disminuir la cobertura boscosa (Ψb.intervenido>Ψb. secundario>Ψb. primario y fueron diferentes entre especies. La abundancia incrementó al aumentar el nivel de intervención (Nb.intervenido>Nb.secundario>Nb primario, disminuyó con el tamaño corporal y fue mayor para frugívoros y nectarívoros que para insectívoros. Los resultados sugieren que las comunidades de murciélagos despliegan fuertes respuestas al grado de intervención. Aunque se presentó mayor presencia y abundancia en el área más intervenida, los murciélagos también utilizaron las menos intervenidas. Esto puede incrementar el movimiento de las semillas entre diferentes estadíos sucesionales. Por lo tanto, el estudio de la comunidad de murciélagos puede ser importante para monitorear el estado de recuperación de los bosques del PNN Gorgona y para entender los procesos ecológicos que generan la recuperación de estos.

  6. Aguas residuales y contaminación del lago de Amatitlán: Villa Canales y Villa Nueva (2005-2014

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    Luis F. Olayo

    2017-03-01

    Full Text Available La contaminación y destrucción del lago de Amatitlán es un problema ambiental actual y de gran magnitud en el Área Metropolitana de la Ciudad de Guatemala, un fenómeno antrópico que crece aceleradamente, derivado del crecimiento demográfico y urbano que experimentan los lugares poblados de los 14 municipios que se localizan en la cuenca del lago de Amatitlán. La vivienda urbana -que se cuantifica por miles- es una de las fuentes productoras de las aguas residuales domiciliares que se depositan en el citado lago desde el traslado y asentamiento de la ciudad de Guatemala de la Asunción al Valle de la Ermita en el año de 1776 hasta el año 2016 (240 años, las que nunca han recibido un tratamiento apropiado; esta tendencia hará que en el corto plazo, el lago se pierda, convirtiéndose en un pantano insalubre que hará inhabitables sus tierras adyacentes. Mediante estimaciones de población urbana municipal y datos recientes de la cantidad de viviendas construidas en las áreas urbanas de los municipios de Villa Canales y Villa Nueva en el período 2005-2014, se estimó la producción de aguas residuales domiciliares (caudales o volúmenes, útiles para ilustrar y dimensionar este problema, débilmente visibilizado, considerado y valorado por la población, la iniciativa privada e instituciones del estado -municipalidades, instituciones y ministerios-, involucradas en este problema.

  7. Lista actualizada de los murciélagos de Chile con comentarios sobre taxonomía, ecología, y distribución

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    Annia Rodríguez-San Pedro

    2016-12-01

    Full Text Available Los murciélagos son uno de los grupos de vertebrados menos estudiados en Chile; sin embargo, durante los últimos años su conocimiento ha ido avanzado significativamente debido a la implementación del método bioacústico y a la reciente inclusión de los murciélagos en estudios de impacto ambiental. En este trabajo se actualiza la lista de murciélagos de Chile, elevando a 13 el número de especies presentes en el país. Junto con la actualización del status taxonómico de algunas especies y la incorporación de un nuevo registro para el país, se presenta información relevante sobre aspectos ecológicos y conductuales, así como ampliaciones de sus rangos de distribución. Finalmente, se identifican y proponen algunas direcciones futuras de investigación, a desarrollar a nivel nacional, que permitan profundizar en el conocimiento de este grupo de mamíferos. 

  8. Hydraulic paths and estimation of the real residence time of the water in Lago Maggiore (N. Italy: application of massless markers transported in 3D motion fields

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    Nicoletta Sala

    2012-01-01

    Full Text Available This study, conducted using the TRIM_LM model, is a continuation of work on the movement of the water mass at different depths in Lago Maggiore, and thus on the estimation of the real residence time of the water in the lake. Three-dimensional CFD numerical simulations were extended to a 4-year period, focusing on the movements of 202 (two hundred and two massless markers inserted at different points in Lago Maggiore and at the mouths of 11 of its tributaries, enabling us to establish more realistic water renewal times for Lago Maggiore. By crossing the data of the horizontal trajectories of the environmental markers with those of their vertical variations, we reconstructed their movements over the four years of the simulation programme. An analysis of the results shows that the water mass in the layers of the upper 100 m has residence times between a minimum of 1 y and a maximum of 4-5 y. The water from the tributaries has residence times between 250 and 1000 days, depending on the distance of the tributaries from the closing section of the lake. The water in the layers below 100 m has residence times that still cannot be quantified with precision, but that can certainly be estimated at a number of years in two figures. These times are strongly conditioned by the depth of the late winter mixing, which in the last 40 y has not exceeded 200 m.

  9. Análisis espectral del Lago de Guadalupe, mediante imágenes de satélite y datos in situ

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    Raúl Aguirre Gómez

    2014-01-01

    Full Text Available El Lago de Guadalupe es un embalse localizado en los alrededores de la Ciudad de México, y recibe un volume considerable de aguas residuales. En este trabajo se presenta un análisis espectral del Lago de Guadalupe utilizando imágenes SPOT y datos colectados in situ. Las mediciones fueron realizadas en los meses de febrero y septiembre de 2006. Las variables medidas incluyen temperatura, pH, clorofila a, transparencia Secchi y datos satelitales, cuasisimultáneos, obtenidos de imágenes SPOT. Este cuerpo de agua es eutrófico, con valores básicos de pH (6.8 – 11.3 y altas concentraciones de clorofila-a (6.9-112.4 μg l-1 y valores bajos de transparencia Secchi. Térmicamente, el lago es cálido monomíctico. Los resultados indican un alto grado de eutrofización, debida principalmente a la presencia de fitoplancton, vegetación sumergida y flotante. La distribución de la vegetación es cuasi-homogénea en el embalse a excepción de un punto de muestreo.

  10. First evidence of "paralytic shellfish toxins" and cylindrospermopsin in a Mexican freshwater system, Lago Catemaco, and apparent bioaccumulation of the toxins in "tegogolo" snails (Pomacea patula catemacensis).

    Science.gov (United States)

    Berry, John P; Lind, Owen

    2010-05-01

    Exposure to cyanobacterial toxins in freshwater systems, including both direct (e.g., drinking water) and indirect (e.g., bioaccumulation in food webs) routes, is emerging as a potentially significant threat to human health. We investigated cyanobacterial toxins, specifically cylindrospermopsin (CYN), the microcystins (MCYST) and the "paralytic shellfish toxins" (PST), in Lago Catemaco (Veracruz, Mexico). Lago Catemaco is a tropical lake dominated by Cylindrospermopsis, specifically identified as Cylindrospermopsis catemaco and Cylindrospermopsis philippinensis, and characterized by an abundant, endemic species of snail (Pomacea patula catemacensis), known as "tegogolos," that is both consumed locally and commercially important. Samples of water, including dissolved and particulate fractions, as well as extracts of tegogolos, were screened using highly specific and sensitive ELISA. ELISA identified CYN and PST at low concentrations in only one sample of seston; however, both toxins were detected at appreciable quantities in tegogolos. Calculated bioaccumulation factors (BAF) support bioaccumulation of both toxins in tegogolos. The presence of CYN in the phytoplankton was further confirmed by HPLC-UV and LC-MS, following concentration and extraction of algal cells, but the toxin could not be confirmed by these methods in tegogolos. These data represent the first published evidence for CYN and the PST in Lago Catemaco and, indeed, for any freshwater system in Mexico. Identification of the apparent bioaccumulation of these toxins in tegogolos may suggest the need to further our understanding of the transfer of cyanobacterial toxins in freshwater food webs as it relates to human health. Copyright 2009 Elsevier Ltd. All rights reserved.

  11. CAMBIOS EN LA ESTRUCTURA DE LA POBLACIÓN DE Boeckella gracilis (CRUSTACEA, CENTROPAGIDAE EN EL PLANCTON DEL LAGO DE TOTA, BOYACÁ - COLOMBIA

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    ADRIANA DEL PILAR GONZÁLEZ ANGARITA

    2008-05-01

    Full Text Available Se realizó un seguimiento a la población de Boeckella gracilis Daday, 1902 en el lago de Tota, Boyacá, Colombia, durante seis meses con periodicidad quincenal a partir de mayo de 2004. La densidad poblacional fue de 11.968 Ind.m-3 en promedio y expresó un incremento progresivo hasta el final del estudio que corresponde a época de fuertes lluvias en la zona y aguas altas en el lago. Los machos adultos dominaron en densidad y biomasa, constituyendo el 32,5% y el 35,8% de la población, respectivamente. La fecundidad promedio se estimó en 0,32 huevos por hembra. En la época de aguas altas se presentó un aumento de la actividad reproductiva evidenciado por el incremento de la fecundidad y el mayor número de copepoditos. Con base en el análisis de componentes principales, la transparencia, el pH y el oxígeno disuelto fueron las variables determinantes de la expresión temporal del hábitat. El comportamiento de la biomasa de la población se asoció positivamente con la variación de la densidad de los adultos y copepoditos y negativamente con la concentración de oxígeno disuelto en el lago.

  12. Componentes fitoplanctónicos y zoobentónicos en el lago Zempoala, Morelos, México Componentes fitoplanctónicos y zoobentónicos en el lago Zempoala, Morelos, México

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    Migdalia Díaz Vargas

    2012-02-01

    Full Text Available   This paper describes an investigation of the density and distribution of phytoplankton and zoobenthic organisms carried out in the Zempoala Lake from 1998 to 1999. The data showed that the flora is made up of 29 species, distributed in eight categories. Of these the category of Bacillariophyceae showed the highest density and was also dominant in time and space as well. With regards to phytoplankton, the highest densities were found during spring, and according to the distribution of species, a seasonal succession was observed. With regards to benthic organisms, results showed that the abundance of these organisms during Fall and Winter was higher than during Spring and Summer, with a peak abundance of 10,612 org/m2, Oligoquetos were dominant along the coastline during almost all the year, while cladoceros were dominant in the deeper water, through the largest part of the time that sampling took place. The largest number of organism were found at sampling points seven and eight.  El presente trabajo se llevó a cabo en el Lago Zempoala durante el periodo 1998-1999, efectuándose un estudio sobre la densidad y la distribución de los componentes fitoplanctónicos y zoobentónicos de este lago. Los datos muestran que la flora está integrada por 29 especies, incluidas en 8 clases, de éstas, la clase Bacillariophyceae presentó las densidades más altas y dominó en cuanto a su presencia en el espacio y tiempo. Las densidades mayores del fitoplancton se registraron durante la primavera, de acuerdo a la distribución de las especies se observó una sucesión estacional. Con respecto a los organismos bénticos, los resultados indicaron que durante el período otoño-invierno la abundancia fue mayor que en la época primavera-verano, registrándose una abundancia total de 10,612 org/m2, dominando los oligoquetos en la zona litoral durante casi todos los meses de muestreo y los cladóceros en la zona profunda. Respecto a las zonas de colecta las

  13. Riqueza de especies, nuevos registros y actualización del listado taxonómico de la comunidad de murciélagos del Parque Nacional Natural Gorgona, Colombia

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    Oscar E Murillo G

    2014-02-01

    Full Text Available Los inventarios biológicos son esenciales para el seguimiento de cambios causados por factores naturales y antrópicos, y para determinar las prioridades de conservación. El estudio de los murciélagos es importante pues estos proveen servicios ambientales esenciales y su diversidad puede reflejar el estado de otros organismos. Sin embargo, el inventario de los murciélagos del PNN Gorgona puede ser incompleto debido a los pocos muestreos intensivos que se han realizado. En este trabajo, se actualiza el listado de la comunidad de murciélagos del Parque Nacional Natural Gorgona, se evalúa su inventario y se propone una clave taxonómica. Considerando que sólo existe una especie del género Saccopteryx (S. leptura en Gorgona, en los estudios previos se han registrado 13 especies de murciélagos, En el presente estudio se adicionan dos nuevos registros: Peropteryx macrotis con base en la revisión de colecciones biológicas y Mimon crenulatum con base en trabajo de campo. Consecuentemente, se han registrado un total de 15 especies de murciélagos en le PNN Gorgona, mientras el estimado de riqueza predice un total de 33 especies. Por lo tanto, el inventario actual corresponde al 45.5% del número de especies esperado. Por otra parte, la detectabilidad de murciélagos insectívoros y nectarívoros fue baja en comparación con la de frugívoros. En conclusión, el inventario de murciélagos no es completo y las especies insectívoras pueden estar sub-representadas debido al uso exclusivo de redes de niebla en los estudios realizados.

  14. Disolución de sílice biogénica en sedimentos de lagos utilizados como bioindicadores de calidad del agua

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    Hermes U. Ramírez S.

    2007-01-01

    Full Text Available El objetivo de este trabajo es mostrar que la disoluci n de s lice amorfa de origen biog nico (diatomeas y fitolitos es un bioindicador de calidad del agua de lagos, valid ndose con la determinaci n de par metros f sico-qu micos. La determinaci n de diatomeas y fitolitos se realiz sobre n cleos de sedimentos del Lago Chapala, M xico. Las diatomeas y fitolitos fueron separados, depositados en laminillas y observados con microscop a de luz polarizada y electr nica de barrido. En forma paralela se analiz la calidad del agua del lago durante la d cada de 1990-2000 monitoreando 38 par metros f sicoqu micos en 25 estaciones. El estudio de diatomeas evidenci que la mayor a de ellos presentan fr stulas no preservadas, alto grado de disoluci n, fitolitos fragmentados y/o disueltos y una importante cantidad de debris de s lice. La determinaci n de fitolitos fue deficiente, con m s diatomeas en estado de disoluci n y debris de s lice opalino que fitolitos. Los resultados del an lisis f sico-qu mico del agua muestran valores de pH de 7,20-9,45, altas concentraciones de: nitr geno org nico (1,57 mg/l, nitr geno amoniacal (0,48 mg/l, nitratos (0,18 mg/l, f sforo org nico (0,16 mg/l, ortofosfatos (0,40 mg/l, f sforo total (0,57 mg/l y conductividad (867,53 S/cm lo que refleja altas concentraciones de sales, sobresaturaci n de CaCO3 con dureza total y c lcica de 221,35 y 142,67 mg/l respectivamente; alcalinidad total y c lcica de 307,29 y 29,90 mg/l respectivamente; todos factores que influyen en la disoluci n de diatomeas y fitolitos en los lechos del lago. Los resultados del estudio micropaleontol gico del Lago de Chapala han evidenciado disoluci n de diatomeas, fitolitos y la presencia de gran cantidad de debris de s lice amorfo y baja calidad de sus aguas, lo cual ha sido verificado con los par metros fisicoqu micos de la ultima d cada. Los fen menos de disoluci n de diatomeas y fitolitos por el momento son asociados a valores de pH>9, a condiciones eutr

  15. High prevalence of HIV, chlamydia and gonorrhoea among men who have sex with men and transgender women attending trusted community centres in Abuja and Lagos, Nigeria.

    Science.gov (United States)

    Keshinro, Babajide; Crowell, Trevor A; Nowak, Rebecca G; Adebajo, Sylvia; Peel, Sheila; Gaydos, Charlotte A; Rodriguez-Hart, Cristina; Baral, Stefan D; Walsh, Melissa J; Njoku, Ogbonnaya S; Odeyemi, Sunday; Ngo-Ndomb, Teclaire; Blattner, William A; Robb, Merlin L; Charurat, Manhattan E; Ake, Julie

    2016-01-01

    Sexually transmitted infection (STI) and HIV prevalence have been reported to be higher amongst men who have sex with men (MSM) in Nigeria than in the general population. The objective of this study was to characterize the prevalence of HIV, chlamydia and gonorrhoea in this population using laboratory-based universal testing. TRUST/RV368 represents a cohort of MSM and transgender women (TGW) recruited at trusted community centres in Abuja and Lagos, Nigeria, using respondent-driven sampling (RDS). Participants undergo a structured comprehensive assessment of HIV-related risks and screening for anorectal and urogenital Chlamydia trachomatis and Neisseria gonorrhoeae , and HIV. Crude and RDS-weighted prevalence estimates with 95% confidence intervals (CIs) were calculated. Log-binomial regression was used to explore factors associated with prevalent HIV infection and STIs. From March 2013 to January 2016, 862 MSM and TGW (316 in Lagos and 546 in Abuja) underwent screening for HIV, chlamydia and gonorrhoea at study enrolment. Participants' median age was 24 years [interquartile range (IQR) 21-27]. One-third (34.2%) were identified as gay/homosexual and 65.2% as bisexual. The overall prevalence of HIV was 54.9%. After adjusting for the RDS recruitment method, HIV prevalence in Abuja was 43.5% (95% CI 37.3-49.6%) and in Lagos was 65.6% (95% CI 54.7-76.5%). The RDS-weighted prevalence of chlamydia was 17.0% (95% CI 11.8-22.3%) in Abuja and 18.3% (95% CI 11.1-25.4%) in Lagos. Chlamydia infection was detected only at the anorectal site in 70.2% of cases. The RDS-weighted prevalence of gonorrhoea was 19.1% (95% CI 14.6-23.5%) in Abuja and 25.8% (95% CI 17.1-34.6%) in Lagos. Overall, 84.2% of gonorrhoea cases presented with anorectal infection only. Over 95% of STI cases were asymptomatic. In a multivariable model, increased risk for chlamydia/gonorrhoea was associated with younger age, gay/homosexual sexual orientation and higher number of partners for receptive anal sex

  16. A Geochemical and Sedimentary Record of High Southern Latitude Holocene Climate Evolution from Lago Fagnano, Tierra del Fuego

    Energy Technology Data Exchange (ETDEWEB)

    Moy, C M; Dunbar, R B; Guilderson, T P; Waldmann, N; Mucciarone, D A; Recasens, C; Austin, J A; Anselmetti, F S

    2010-11-19

    Situated at the southern margin of the hemispheric westerly wind belt and immediately north of the Antarctic Polar Frontal zone, Tierra del Fuego is well-positioned to monitor coupled changes in the ocean-atmosphere system of the high southern latitudes. Here we describe a Holocene paleoclimate record from sediment cores obtained from Lago Fagnano, a large lake in southern Tierra del Fuego at 55{sup o}S, to investigate past changes in climate related to these two important features of the global climate system. We use an AMS radiocarbon chronology for the last 8,000 years based on pollen concentrates, thereby avoiding contamination from bedrock-derived lignite. Our chronology is consistent with a tephrochronologic age date for deposits from the middle Holocene Volcan Hudson eruption. Combining bulk organic isotopic ({delta}{sup 13}C and {delta}{sup 15}N) and elemental (C and N) parameters with physical sediment properties allow us to better understand sediment provenance and transport mechanisms and to interpret Holocene climate and tectonic change during the last 8,000 years. Co-variability and long-term trends in C/N ratio, carbon accumulation rate, and magnetic susceptibility reflect an overall Holocene increase in the delivery of terrestrial organic and lithogenic material to the deep eastern basin. We attribute this variability to westerly wind-derived precipitation. Increased wind strength and precipitation in the late Holocene drives the Nothofagus forest eastward and enhances run-off and terrigenous inputs to the lake. Superimposed on the long-term trend are a series of abrupt 9 negative departures in C/N ratio, which constrain the presence of seismically-driven mass flow events in the record. We identify an increase in bulk {delta}{sup 13}C between 7,000 and 5,000 cal yr BP that we attribute to enhanced aquatic productivity driven by warmer summer temperatures. The Lago Fagnano {delta}{sup 13}C record shows similarities with Holocene records of sea surface

  17. Pollen-based reconstruction of Holocene vegetation and climate in southern Italy: the case of Lago Trifoglietti

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    S. Joannin

    2012-12-01

    Full Text Available A high-resolution pollen record from Lago Trifoglietti in Calabria (southern Italy provides new insights into the paleoenvironmental and palaeoclimatic changes which characterise the Holocene period in the southern Italy. The chronology is based on 11 AMS radiocarbon dates from terrestrial organic material. The Holocene history of the vegetation cover shows the persistence of an important and relatively stable Fagus forest present over that entire period, offering a rare example of a beech woodstand able to withstand climate changes for more than 11 000 yr. Probably in relation with early Holocene dry climate conditions which affected southern Italy, the Trifoglietti pollen record supports a southward delay in thermophyllous forest expansion dated to ca. 13 500 cal BP at Monticchio, ca. 11 000 cal BP at Trifoglietti, and finally ca. 9800 cal BP in Sicily. Regarding the human impact history, the Trifoglietti pollen record shows only poor imprints of agricultural activities and anthopogenic indicators, apart from those indicating pastoralism activities beneath forest cover. The selective exploitation of Abies appears to have been the strongest human impact on the Trifoglietti surroundings. On the basis of (1 a specific ratio between hygrophilous and terrestrial taxa, and (2 the Modern Analogue Technique, the pollen data collected at Lago Trifoglietti led to the establishment of two palaeoclimatic records tracing changes in (1 lake depth and (2 annual precipitation. On a millennial scale, these records give evidence of increasing moisture from ca. 11 000 to ca. 9400 cal BP and maximum humidity from ca. 9400 to ca. 6200 cal BP, prior to a general trend towards the drier climate conditions that have prevailed up to the present. In addition, several successive centennial-scale oscillations appear to have punctuated the entire Holocene. The identification of a cold dry event around 11 300 cal BP, responsible for a marked decline in

  18. CARACTERIZACIÓN FÍSICA, QUÍMICA Y ESTRUCTURA DE LA COMUNIDAD ZOOPLANCTÓNICA DE UN PEQUEÑO LAGO TROPICAL, LAGO SANTANDER (RIONEGRO, ANTIOQUIA, COLOMBIA

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    JARAMILLO-L. JUAN CARLOS

    2003-12-01

    Full Text Available Este estudio se realizó con el fin de determinar la fluctuación temporal de las variablesfísicas, químicas y biológicas y el grado de asociación entre ellas en un pequeñolago tropical durante un período de ocho meses y de igual manera, con el ánimode describir la estructura de la comunidad zooplanctónica y su patrón de variacióny establecer cuáles son las variables que más influyen en su comportamiento. Lasvariables medidas mostraron una baja fluctuación temporal durante el período deestudio. El estado de eutrofia en el que se encuentra este lago se deduce por losniveles de fósforo medidos, el comportamiento temporal del CO2, la alta relaciónentre el nitrógeno y el fósforo, los bajos valores de riqueza y diversidad delzooplancton, la dominancia de rotíferos y copépodos y la presencia de Bosminalongirostris. De todas las variables fisicoquímicas evaluadas las que más influenciaejercieron en la comunidad zooplanctónica fueron el pH y el material suspendido yen menor proporción el oxígeno disuelto y los nutrientes.

  19. Cooking Fuels in Lagos, Nigeria: Factors Associated with Household Choice of Kerosene or Liquefied Petroleum Gas (LPG

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    Obianuju B. Ozoh

    2018-03-01

    Full Text Available Cooking with dirty-burning fuels is associated with health risk from household air pollution. We assessed the prevalence of and factors associated with the use of cooking fuels, and attitudes and barriers towards use of liquefied petroleum gas (LPG. This was a cross-sectional, population-based survey conducted in 519 households in Lagos, Nigeria. We used a structured questionnaire to obtain information regarding choice of household cooking fuel and the attitudes towards the use of LPG. Kerosene was the most frequently used cooking fuel (n = 475, 91.5%; primary use n = 364, 70.1% followed by charcoal (n = 159, 30.6%; primary use n = 88, 17% and LPG (n = 86, 16.6%; primary use n = 63, 12.1%. Higher level of education, higher income and younger age were associated with LPG vs. kerosene use. Fuel expenditure on LPG was significantly lower than for kerosene ( N (Naira 2169.0 ± 1507.0 vs. N 2581.6 ± 1407.5. Over 90% of non-LPG users were willing to switch to LPG but cited safety issues and high cost as potential barriers to switching. Our findings suggest that misinformation and beliefs regarding benefits, safety and cost of LPG are important barriers to LPG use. An educational intervention program could be a cost-effective approach to improve LPG adoption and should be formally addressed through a well-designed community-based intervention study.

  20. Cooking Fuels in Lagos, Nigeria: Factors Associated with Household Choice of Kerosene or Liquefied Petroleum Gas (LPG).

    Science.gov (United States)

    Ozoh, Obianuju B; Okwor, Tochi J; Adetona, Olorunfemi; Akinkugbe, Ayesha O; Amadi, Casmir E; Esezobor, Christopher; Adeyeye, Olufunke O; Ojo, Oluwafemi; Nwude, Vivian N; Mortimer, Kevin

    2018-03-31

    Cooking with dirty-burning fuels is associated with health risk from household air pollution. We assessed the prevalence of and factors associated with the use of cooking fuels, and attitudes and barriers towards use of liquefied petroleum gas (LPG). This was a cross-sectional, population-based survey conducted in 519 households in Lagos, Nigeria. We used a structured questionnaire to obtain information regarding choice of household cooking fuel and the attitudes towards the use of LPG. Kerosene was the most frequently used cooking fuel ( n = 475, 91.5%; primary use n = 364, 70.1%) followed by charcoal ( n = 159, 30.6%; primary use n = 88, 17%) and LPG ( n = 86, 16.6%; primary use n = 63, 12.1%). Higher level of education, higher income and younger age were associated with LPG vs. kerosene use. Fuel expenditure on LPG was significantly lower than for kerosene ( N (Naira) 2169.0 ± 1507.0 vs. N 2581.6 ± 1407.5). Over 90% of non-LPG users were willing to switch to LPG but cited safety issues and high cost as potential barriers to switching. Our findings suggest that misinformation and beliefs regarding benefits, safety and cost of LPG are important barriers to LPG use. An educational intervention program could be a cost-effective approach to improve LPG adoption and should be formally addressed through a well-designed community-based intervention study.

  1. Water level effect on herbaceous plant assemblages at an artificial reservoir-Lago Azul State Park, Southern Brazil

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    D. C. Souza

    Full Text Available This study presents the effect of water level variation on the assemblages of herbaceous species in Mourão I Reservoir, Lago Azul State Park, Southern Brazil. The structure and distribution of populations was examined in February (dry period and April (rainy period, 2011, in two transects. These transects started at the forest edge towards the center of the lake. The end of the transect coincided with the end of the plants within the lake. On every two meters along of the transects we sampled a wooden square of 0.25 m2 for species biomass analysis.The macrophyte stand was composed entirely of emergent species. Considering the periods, most species were less frequent in the rainy period (April, but Ipomea ramosissima (Poir. Choisy, Commelina nudiflora L., Eleocharis acuntagula (Roxb. Schult. and Verbena litorales (Kunth. had their frequency increased during this period, probably due to their resistance. The influence of flood as measured by the NMDS point out that both before and after the flood, there are plots with distinct compositions and biomass. The water level variation affects the dynamics of plant composition and structure in marginal areas of the Reservoir.

  2. Succession Planning and Job Commitment: Moderating Role of Employees’ Satisfaction in Selected Beverages Companies in Lagos Metropolis

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    FADEYI OLATUNJI

    2017-12-01

    Full Text Available Purpose of the article: Succession planning has become a misconstrued phenomenon in a global environment where organisations largely depend on their human resources for achievement, continuity and effectiveness. Methodology/methods: Data for this research were collected from three Beverages companies in Lagos, Nigeria, with 244 administered questionnaires, retrieved and analysed using the regression analysis. Scientific aim: This paper examines the Moderating Role of Employees’ Satisfaction on Succession Planning and Job Commitment in the manufacturing sector. Findings: The result showed that succession planning significantly impact on employees’ job commitment. The findings indicated a variance of 52% between mentoring and affective commitment, however when the moderating variable of employees’ satisfaction was established, the R-squared increased to 56.8% while the significance of the F-change assessed show significance at 0.0001. Conclusions: The study recommends that when organizational replacement is done, it should meet the present and future need as well as the corporate objectives of the organization and that management should handle the issue of Succession Planning with high sense of objectivity in order to achieve organizational efficiency, among others.

  3. Market Orientation and Business Performance: a Study of Interrelationships and Effects in a Small sized Hotels within Lagos State Metropolis

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    P.K.A. Ladipo

    2016-12-01

    Full Text Available The relationship between market orientation and business performance has been a subject of debate in marketing literature. To date, there is no consensus opinion and empirical study in the context of small sized-hotels in Nigeria is scanty. This study examines the relationship between market orientation and business performance. Cross-sectional survey research design was adopted. Questionnaire was used to obtained data from 300 employees of the selected hotels within Lagos metropolis. Data collected were analyzed using correlation and regression analysis. The results suggest that only customer orientation is significantly contributing to the performance of the small sized hotel operators. Specifically, both competitor orientation and inter-functional coordination, though practiced by the hotels are not significantly linked to its performance. Furthermore, the study discovered that market orientation practices significantly influence business performance of the selected hotels. Based on the findings, the study concludes that hotel operators need market orientation practices to enhance their performance. Hence, market orientation will continue to be a vital strategy not only in improving firm’s understanding of customers’ and competitors, but to enhance synergy across the organization. From the preceding conclusion, the study recommends that hotel operators should commit substantial resources and effort in cultivating a customer oriented culture, and transmit it across the organization to create strategic alignment. Furthermore, the competitive environment should be closely monitored to identify profitable business opportunity and threats that could affect their growth and sustainability.

  4. La dama fantasma y el monstruo del lago: Narración, ciencia y creencias en actuaciones discursivas

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    María Inés Palleiro

    2011-12-01

    Full Text Available En este artículo, examino la dinámica entre ficción e historia, ciencia y creencia, en versiones de dos matrices folklóricas de distintas latitudes: la dama fantasma en sus distintos nombres —desde Rufina Cambacères a Frederike von Grotes y Matilde de Canossa— y el monstruo del lago, conocido como el Nahuelito, en una versión local del monstruo de Loch Ness. Trabajo con relatos registrados en contextos diversos y en soportes diferentes, que incluyen los circuitos mediáticos. Examino en ellos la articulación retórica del mensaje, cuyo contenido semántico se relaciona con creencias colectivas, entendidas como enunciados cuyo valor de verdad depende de un acuerdo intersubjetivo. Analizo la dinámica entre el saber experto de las ciencias y la narrativa de creencias, que intenta dar una respuesta totalizadora a problemas tales como la finitud de la vida o el temor a lo desconocido, para los cuales la ciencia canónica no brinda una respuesta satisfactoria.

  5. Health risk assessment for the consumption of fresh and preserved fish (Alosa agone) from Lago di Como (Northern Italy).

    Science.gov (United States)

    Quadroni, Silvia; Bettinetti, Roberta

    2017-07-01

    Although banned in many countries for decades, DDTs and PCBs still represent a global threat to food safety. As these contaminants are still present in aquatic ecosystems, fish can be an important contributor to their total dietary intake. Alosa agone specimens were sampled over a period of 10 years (from 2006 to 2015) to provide a representative overview of the DDT and PCB levels of Lago di Como, a deep Italian lake where a DDT input due to secondary sources was observed in recent years. The potential health risk from the consumption of both fresh and preserved fish was evaluated. While DDT levels have generally decreased during the monitored period, reaching quite stable levels, PCB concentrations were variable, with values exceeding, in some cases, the European Union limit for human consumption and enabling potential carcinogenic effects. However, typical local processing of this fish species markedly appeared to decrease these contaminant levels, thus making the fish product (called missoltino) a safer food. The results of this work highlighted the need of continuous biomonitoring of those contaminants considered a past issue along with the emergent ones. Copyright © 2017 Elsevier Inc. All rights reserved.

  6. Use of information and communication technology among dental students and registrars at the faculty of dental sciences, University of Lagos.

    Science.gov (United States)

    Butali, A; Adeyemo, W L; Akinshipo, A O; Fashina, A; Savage, K O

    2011-01-01

    The aim of this study was to investigate the use of information technology amongst dental students, dental nursing students and resident doctors in training at the faculty of dental Surgery University of Lagos. A structured questionnaire was distributed to 58 clinical dental students in 4 th and 5 th years of training in the 2010/2011 academic year, 36 dental nursing students and 63 resident doctors undergoing specialist training. All participants have access to the computers, 2.5% within the University and 31% at home and internet cafes and about 50% have the basic skills required. A significant difference was observed between the resident doctors and clinical dental students (P = 0.003), between resident doctors and dental nursing students (P = 0.0001) when the use of computer for study was compared. Over 95% of participants have access to internet and about 50% of them use the internet for their studies. A significant difference (P = 0.005) was observed between clinical dental students and dental nursing students that use the internet and word processing. The resident doctors used the computers for multimedia and MedLine search tools more than clinical dental students (P = 0.004) and dental nursing students (0.0006). The findings of the study show that dental students and resident doctors in training have the requisite knowledge to operate the computer for use in their study and personal activities.

  7. Stigma, medication adherence and coping mechanism among people living with HIV attending General Hospital, Lagos Island, Nigeria

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    Adekemi O. Sekoni

    2012-11-01

    Objectives: This study assessed the various domains of stigma experienced by PLWHAs attending an HIV clinic at General Hospital, Lagos Island, their medication adherence patterns and their coping mechanisms for ensuring adherence to antiretroviral therapy. Method: A cross-sectional study design with a sample size of 200 was used. Respondents were selected using systematic random sampling. Interviewers administered structured questionnaires were used to collect information on the domains of stigma. Data was analysed using EPI info©. This was followed by a focus group discussion (FGD with seven participants at the clinic using an interview guide with open-ended questions. Results: Overall, stigma was experienced by 35% of the respondents. Within this group, 6.6%, 37.1%, 43.1% and 98.0% of the respondents reported experiencing negative self image stigma, personalised stigma, disclosure stigma and public attitude stigma respectively. Almost 90% of the respondents were adherent. The FGD revealed that disclosure was usually confined to family members and the coping mechanism for achieving adherence was to put antiretroviral (ARVs in unlabelled pill boxes. Conclusion: This study found that stigma was low and that the most common domain of stigma experienced was public attitude stigma. Medication adherence of respondents was good as a result of the coping mechanism, which involves putting ARVs in unlabelled pill boxes.

  8. 'I don't get this climate stuff!' Making sense of climate change among the corporate middle class in Lagos.

    Science.gov (United States)

    Asiyanbi, Adeniyi P

    2015-11-01

    Public engagement continues to be central to wider efforts to address climate change. This study contributes to public engagement debates by investigating engagement with climate change among an often overlooked group, the corporate middle class in Africa's second largest megacity, Lagos. Combining survey and interviews, I focus analysis on three aspects: awareness, knowledge and concern; role of scientific and social frames in shaping general attitude; and spatial attribution of causes and consequences. The study reveals a universal awareness and high concern about climate change among the respondents, although understanding and perceptions of climate change are significantly socially framed. Social situatedness, more than scientific facts, is the most important definer of overall engagement with climate change. This study thus underscores a nuanced constructionist stance, showing how corporate professionals' 'ways of knowing' climate change is underpinned by a certain co-production between scientific and socio-experiential frames. I highlight implications for research and public engagement with climate change. © The Author(s) 2015.

  9. ESTADO TRÓFICO DE UN LAGO TROPICAL DE ALTA MONTAÑA: CASO LAGUNA DE LA COCHA

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    Mery Liliana López Martínez

    2015-01-01

    Full Text Available Este artículo presenta los resultados de una investigación realizada con el fin de determinar el estado trófico de la laguna de La Cocha, cuerpo hídrico importante en Colombia y en el mundo, que hace parte del humedal Ramsar laguna de La Cocha, ecosistema que cumple distintas funciones y alberga una gran biodiversidad que se quiere proteger. Para lograr el propósito planteado, esta investigación se realizó entre enero y septiembre de 2013, determinando el estado trófico mediante los índices de Carlson, el índice desarrollado por la OCDE (Organización para la Cooperación y el Desarrollo Económico y el índice de Carlson modificado por Toledo. Los resultados permitieron clasificar a la laguna de La Cocha como oligotrófica y ultraoligotrófica, característica típica de lagos de alta montaña con bajos procesos de contaminación de origen aloctóno y autóctono.

  10. National health insurance scheme: How receptive are the private healthcare practitioners in a local government area of Lagos state.

    Science.gov (United States)

    Christina, Campbell Princess; Latifat, Taiwo Toyin; Collins, Nnaji Feziechukwu; Olatunbosun, Abolarin Thaddeus

    2014-11-01

    National Health Insurance Scheme (NHIS) is one of the health financing options adopted by Nigeria for improved healthcare access especially to the low income earners. One of the key operators of the scheme is the health care providers, thus their uptake of the scheme is fundamental to the survival of the scheme. The study reviewed the uptake of the NHIS by private health care providers in a Local Government Area in Lagos State. To assess the uptake of the NHIS by private healthcare practitioners. This descriptive cross-sectional study recruited 180 private healthcare providers selected by multistage sampling technique with a response rate of 88.9%. Awareness, knowledge and uptake of NHIS were 156 (97.5%), 110 (66.8%) and 97 (60.6%), respectively. Half of the respondents 82 (51.3%) were dissatisfied with the operations of the scheme. Major reasons were failure of entitlement payment by Health Maintenance Organisations 13 (81.3%) and their incurring losses in participating in the scheme 8(50%). There was a significant association between awareness, level of education, knowledge of NHIS and registration into scheme by the respondents P-value NHIS were commendable among the private health care providers. Six out of 10 had registered with the NHIS but half of the respondents 82 (51.3%) were dissatisfied with the scheme and 83 (57.2%) regretted participating in the scheme. There is need to improve payment modalities and ensure strict adherence to laid down policies.

  11. THE INFLUENCE OF FIRMS STRUCTURAL CHARACTERISTICS ON THE DEGREE OF AGGLOMERATION ECONOMIES ENJOYED AMONGST FIRMS IN THE LAGOS REGION, NIGERIA

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    FAGBOHUNKA Adejompo

    2015-12-01

    Full Text Available Agglomeration economies is a potent tool in socio-economic revamping, rejuvenation and sustenance of regions, this is as a result of the impulse it transmitted through the multiplier effect it is capable of generated. Therefore, this paper underscores the influence of firms structural characteristics on the degree of agglomeration economies enjoyed amongst firms, using the Lagos region as a case study. The first stage in the collection of primary data involves the reconnaissance survey, thereafter one hundred and three questionnaire were administered in twelve industrial estates; one questionnaire in each of the firm. The paper reveals the following structural characteristics as germane to industrial enterprise; age of firms, areal plant size (m², capacity utilization (in percentage, and Labour size and firms investment. The paper has also found out those agglomeration economies enjoyed ranges from transportation, labour, power supply, to joint water supply. The Roy’s Largest Root test employed to test for the significance of the canonical correlations at 0.05 significant levels shows the calculated F-value 3.5247 and the tabulated F-value 2.90. This suggests that the degree of agglomeration economies enjoyed by firms is significantly explained by the size and structural characteristics of the firms. The paper therefore recommends more and active government participation in the industrial scene, given the necessary support for the expansion of firm’s structural characteristics which will lead to increase agglomeration economies enjoyed by these firms.

  12. The Pathways to the First Contact with Mental Health Services among Patients with Schizophrenia in Lagos, Nigeria

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    Increase Ibukun Adeosun

    2013-01-01

    Full Text Available There is increasing evidence that delay in the commencement of treatment, following the onset of schizophrenia, may be related to the pathways patients navigate before accessing mental health care. Therefore, insight into the pattern and correlates of pathways to mental care of patients with schizophrenia may inform interventions that could fast track their contact with mental health professionals and reduce the duration of untreated psychosis. This study assessed the pathways to mental health care among patients with schizophrenia (n=138, at their first contact with mental health services at the Federal Neuro-Psychiatric Hospital Yaba Lagos, Nigeria. Traditional and religious healers were the first contact for the majority (69% of the patients. Service users who first contacted nonorthodox healers made a greater number of contacts in the course of seeking help, eventuating in a longer duration of untreated psychosis (P<0.001. However, the delay between the onset of psychosis and contact with the first point of care was shorter in patients who patronized nonorthodox practitioners. The findings suggest that collaboration between orthodox and nonorthodox health services could facilitate the contact of patients with schizophrenia with appropriate treatment, thereby reducing the duration of untreated psychosis. The need for public mental health education is also indicated.

  13. RECORRIDO POR RÍOS Y LAGOS: UNA MIRADA AL 'JIANGHU' INTRADUCIBLE EN LA CULTURA Y LA LITERATURA CHINAS

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    Wu Helena Yuen Wai

    2014-10-01

    Full Text Available Este trabajo pretende explorar la posibilidad y, al mismo tiempo, la imposibilidad, de representar un término aparentemente intraducible: jianghu (江湖, que significa, literalmente, «ríos y lagos» en chino. El trabajo comenta cómo el término evoluciona casi como una entidad orgánica en sí misma, que va desde la literatura china y el cine al uso cotidiano del término en jergas y refranes. Al analizar cómo se traduce el término de un idioma a otro, de un contexto antiguo a un contexto (posmoderno, y de una generación a otra, este trabajo pretende estudiar el proceso de adaptación y traducción más allá de un ámbito lingüístico para incluir el ámbito más amplio de los estudios literarios, culturales y cinematográficos. El papel analiza además cómo el proceso de adaptación, traducción e imaginación de jianghu puede considerarse manifestación del concepto derridiano de «suplementariedad».

  14. Escenarios de erosión bajo diferentes manejos agrícolas en la cuenca del lago de Zirahuén, Michoacán, México

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    Manuel E. Mendoza Cantú

    2009-10-01

    Full Text Available La erosión hídrica, la desecación y pérdida de áreas y volúmenes de los lagos son problemas severos en las cuencas cerradas del Sistema Volcánico Transversal. Este deterioro comienza a extenderse a la cuenca del lago de Zirahuén, Michoacán, en la cual se encuentra uno de los pocos lagos mexicanos de aguas casi prístinas; por ello, es urgente plantear estudios que ofrezcan bases para un manejo sostenible de los recursos naturales que beneficie a los distintos usuarios del lago y de la cuenca. El objetivo de este trabajo fue predecir la erosión hídrica asociada a sistemas de manejo agrícola considerando tres tipos de labranza (tradicional, mínima y de conservación en la cuenca del lago de Zirahuén. La predicción se realizó aplicando la Ecuación Universal de Pérdidas de Suelo (EUPS dentro del contexto de un sistema de información geográfica. Los resultados indicaron que el uso de la labranza de conservación en las áreas agrícolas de la cuenca, reduciría las pérdidas de suelo a menos de 3 t ha-1 año-1 en toda el área agrícola de la cuenca, y probablemente se disminuiría la contaminación por arrastre de sedimentos en el lago de Zirahuén.

  15. Diversidad específica bacteriana en murciélagos de distintos gremios alimenticios en la sierra sur de Oaxaca, México

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    Mónica Marcela Galicia J.

    2014-12-01

    Full Text Available Los estudios sobre ecología bacteriana de la micro- biota en los murciélagos son limitados, dicha información es importante para determinar la importancia de esta interacción entre microbiota y hospedero, por tal motivo el objetivo de este trabajo es caracterizar la composición y diversidad bacteriana en las regiones orales y anales de 10 especies de quirópteros con relación al gremio alimenticio a través de medios selectivos, cromogénicos y pruebas bio- químicas. Se muestrearon 502 murciélagos frugívoros, 29 hematófagos y 11 nectívoros, fueron encontradas un total de 26 especies bacterianas, siendo predominantes el filo proteobacterias y la familia Enterobacteriaceae. Se observaron diferencias estadísticamente significativas entre el microhabitat oral y anal [frugívoros (t=-3.516, g.l=14.761, p=0.003, hematófagos (t=-3.320, g.l=19.262, p=0.003, y nectívoros (t=-2.497, g.l=11.933, p=0.026, así como en algunos gremios (frugívoros e nectívoros en la región anal (t=2.274, g.l=29.660, p=0.030, hematófago y nectívoros en la región anal (t=2.077, g.l=29.904, p=0.049]. También se mostró que existe especificidad de bacterias en algunos gremios como: Bacillus cereus, B. spp. X. spp. en nectívoros y frugívoros, así como, Pseudomonas aeruginosa, Serratia marcescens, Staphylococcus aureus, S. epidermis, Aeromonas hydrophyla en hematófagos que podría deberse al tipo de dieta que llevan o por transferencia de bacterias al contacto con sus presas. Los murciélagos han sido relacionados con varias zoonosis, sin embargo poco se conoce sobre la relación que existe entre el murciélago, su micro- biota y la dieta que llevan. Estas bacterias pudieran ser autóctonas de los murciélagos y jugar un papel de mutuo beneficio, proveyéndole al hospedero condiciones estables de crecimiento y nutrientes complementarios, mientras que la microbiota contribuye en la nutrición del hospedero, desarrollo del sistema inmune, estabilizando la

  16. Aplicación de películas comestibles a base de quitosano y mucílago de nopal en fresa (Fragaria ananassa) almacenada en refrigeración

    OpenAIRE

    Ruiz Hernández, Fabiola

    2009-01-01

    El objetivo del presente trabajo fue realizar un estudio para evaluar la aplicación de películas comestibles a base de quitosano y mucílago de nopal (Opuntia ficus indica) en la calidad de fresas (Fragaria ananassa) variedad "Festival", almacenadas en recipientes plásticos, listas para consumir y almacenadas en refrigeración. La primera etapa del estudio consistió en estandarizar una técnica para la extracción de mucílago de nopal. Se evaluaron varias técnicas reportadas...

  17. Aplicación del modelo SWAT para evaluar la contaminación por fuentes difusas en la subcuenca del lago de Chapala, México

    OpenAIRE

    BAUTISTA-ÁVALOS, Dinora; CRUZ-CÁRDENAS, Gustavo; MONCAYO-ESTRADA, Rodrigo; SILVA GARCÍA, José Teodoro; ESTRADA-GODOY, Francisco

    2014-01-01

    Los modelos de balance hidrológico de cuencas son herramientas que permiten describir procesos dinámicos y predecir, a través de la simulación, escenarios del impacto de las actividades productivas de una región. En el presente trabajo se determinó el balance hídrico y las cargas de contaminantes por actividades agrícolas en la subcuenca del lago de Chapala mediante la herramienta de evaluación de agua y suelo SWAT (2012). Se configuró el modelo con datos de altimetría, con información del ti...

  18. Occurrence of extended-spectrum and AmpC β-lactamases in multiple drug resistant Salmonella isolates from clinical samples in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Akinyemi KO

    2017-01-01

    Full Text Available KO Akinyemi,1 Bamidele Abiodun Iwalokun,2 Akeeb O Bola Oyefolu,1 CO Fakorede1 1Department of Microbiology, Lagos State University, Ojo, 2Molecular Biology and Biotechnology Division, Nigerian Institute of Medical Research, Yaba, Lagos, Nigeria Purpose: Salmonella spp. are important foodborne pathogens exhibiting increasing resistance to antimicrobial drugs. Resistance to broad-spectrum β-lactams, mediated by extended-spectrum β-lactamase (ESBL and AmpC β-lactamase enzymes is fast spreading and has had negative impacts on the clinical outcomes, particularly on third-generation cephalosporins. This study investigated the carriage of AmpC gene among multidrug-resistant Salmonella spp. from Lagos, Nigeria. Methods: Forty Salmonella spp. from clinical samples (S. typhi = 13; S. typhimurium = 10; S. enteritidis = 8; S. choleraesuis = 5; S. paratyphi = 4 were subjected to in vitro susceptibility test by disk diffusion methods. Isolates that were resistant to cefoxitin and third-generation cephalosporins were screened for ESBL (Double Disk Synergy Test Method and AmpC enzyme (AmpC disk test production. Detection of AmpC fox gene was carried out by polymerase chain reaction. Results: Thirty-two (80% of the Salmonella isolates were cefoxitin resistant. Plasmid-mediated AmpC β-lactamase and ESBL enzymes were recorded in 10/40 (25% and 16/40 (40% of the Salmonella isolates, respectively. Specifically, 16/40 (40% of the Salmonella isolates possessed 380 bp AmpC fox gene, with the highest occurrence found in S. typhi strains (43.8% followed by S. typhimurium (25%. There was no AmpC fox gene detected in S. paratyphi strains. Interestingly, coproduction of enzymes occurred in some of the isolates, raising fears of resistance to a multitude of antibiotics in the treatment of bacterial infections. Conclusion: Emergence of AmpC β-lactamase–producing Salmonella isolates in our environment was recorded for the first time, raising concern on increased

  19. EVALUACIÓN DE LA BIOMASA Y MANEJO DE Lemna gibba (LENTEJA DE AGUA) EN LA BAHÍA INTERIOR DEL LAGO TITICACA, PUNO

    OpenAIRE

    Canales-Gutiérrez, Ángel; Facultad de Ciencias Biológicas UNA PUNO (Perú).

    2010-01-01

    Uno de los mayores problemas que enfrenta la ciudad de Puno es la presencia de la lenteja de agua (Lemna gibba) en la bahía interior del Lago Titicaca, debido al proceso de eutrofización que sufre a causa del mal tratamiento de las aguas residuales de la ciudad de Puno. Muchas de las estrategias planteadas hasta ahora no han dado resultados positivos en la reducción de la biomasa de Lemna gibba, debido a que estos planes están direccionados a la exterminación de este organismo. En lugar de el...

  20. Seguridad y protección de información de la bahía interior de puno del lago Titicaca

    OpenAIRE

    Canqui Flores, Bernabé

    2001-01-01

    El presente estudio se ha ejecutado en la provincia de Puno, el conocimiento de aplicaciones informáticas en el campo de la Biología, de información cualitativa y cuantitativa, se realiza para la creación de software aplicativo, utilizando lenguajes de alto nivel, para ofrecer seguridad, conftabilidad y protección de información de la Bahía Interior de Puno del Lago Titicaca. Esta investigación se desarrolló con información de Bentos en tres épocas climáticas (Junio-Julio, Agosto-Setiembre y ...

  1. An appraisal of the participation of Egun women in fisheries in Otoawori of Ojo Local Government Area in Lagos State, Nigeria

    OpenAIRE

    Imoukhuede, D.O.; Joseph, F.; Udolisa, R.E.K.

    2007-01-01

    The study was carried out to identify the roles of Egun Women in Fisheries in Oto-Awori of Ojo Local Government Area of Lagos State, as well as factors affecting their roles. Data were collected using the purposive sampling to select 20 Egun Women involved in Fisheries in each of Araromi, Idumosan, lIepete, Idomila and Ebute areas in Oto-Awori, using questionnaire method. Data were analysed using the percentages and Chi-square tests. The results revealed that 80% of the Egun Women were engage...

  2. Soportes tridimensionales biodegradables basados en micropartículas para la regeneración del cartílago articular

    OpenAIRE

    Zurriaga Carda, Javier

    2017-01-01

    Introducción El cartílago es una estructura viscoelástica, hipocelular, aneural, alinfático y avascular. Su función en el organismo consiste en el soporte y distribución de carga, soportando cerca de 10 millones ciclos carga/año. Gracias a sus propiedades biomecánicas, permite un movimiento casi libre de fricción al disminuir el coeficiente de rozamiento. Es por tanto de vital importancia para la correcta congruencia y función articular. Las lesiones cartilaginosas poseen escasa capacid...

  3. Capacidad condrogénica de injertos libres de periostio en la reparación de defectos del cartílago articular: estudio experimental en conejos

    OpenAIRE

    Pérez Tinao, M.; Carranza Bencano, Andrés; Armas Padrón, J. R.

    1996-01-01

    Ante la incapacidad de reparación de las lesiones del cartílago articular, hemos diseñado un modelo experimental, consistente en la realización de una úlcera condral de 8 mm, en la superficie articular de la rótula, en 48 conejos distribuidos en 2 series. Mientras en la serie control (24 conejos) dicha úlcera se dejó a evolución espontánea, en la experimental (24 conejos) fue cubierta con plastia libre de periostio tibial para poder investigar la posibilidad de regeneración del...

  4. Validación tecnológica de las microempresas productoras de trucha arco iris (oncorhynchus mykiss) en el Lago Titicaca

    OpenAIRE

    Meza Romualdo, Félix Rodolfo

    2009-01-01

    La presente tesis de investigación, "VALIDACIÓN TECNOLÓGICA DE LAS MICROEMPRESAS PRODUCTORAS DE TRUCHA ARCO IRIS (Oncorhynchus mykiss) EN EL LAGO TITICACA", surge de la necesidad de conocer los factores que caracterizan la diferenciación productiva de microempresas dedicadas a la crianza de truchas en jaulas flotantes en la Región de Puno, para proponer políticas especificas de desarrollo para cada grupo de productores. Para ello se aplico una encuesta a una muestra representativa de 65 produ...

  5. Eventos paleoambientales en la cuenca del Lago Nahuel Huapi registrados en testigos sedimentarios lacustres durante los últimos 19.000 años

    OpenAIRE

    Lirio, Juan Manuel

    2011-01-01

    Se presentan los resultados del estudio del registro sedimentario de tres cuencas lacustres (El Trébol, Escondido y Moreno) ubicadas en la zona del Llao Llao, dentro de la cuenca del lago Nahuel Huapi, que por su fuerte gradiente de precipitaciones constituye un ecotono de gran valor para investigaciones paleoclimáticas y paleoambientales. En dos campañas se extrajeron, aproximadamente 100 m de testigos sedimentarios, que documentan la sedimentación desde el Último Máximo Glaciario. De cada c...

  6. ESTRATEGIAS PARA FORTALECER EL DOMINIO PERSONAL BASADO EN EL ENFOQUE DE LAS ORGANIZACIONES INTELIGENTES, EN LAS CORPORACIONES LOCALES, DE LA COSTA ORIENTAL DEL LAGO DE MARACAIBO

    Directory of Open Access Journals (Sweden)

    Niria Quintero

    2009-11-01

    Full Text Available El propósito del estudio es diseñar estrategias gerenciales basadas en el enfoque de las organizaciones inteligentes para la eficiencia y eficacia de la gerencia pública en la administración del talento humano, a través del fortalecimiento de la disciplina, dominio personal en las corporaciones locales de la Costa Oriental del Lago. La investigación es descriptiva, campo no experimental, n=110, con un cuestionario de 28 ítemes tipo Likert. Se  concluye que este estudio contribuye con el diseño de innovadoras formas de administrar el personal.

  7. Intertextualidad, dialogismo y poética cognitiva en la novela contemporánea: Bernardo Carvalho, Eduardo Lago y Mario Bellatín

    OpenAIRE

    Arrieta Domínguez, Daniel

    2016-01-01

    En esta tesis estudiamos el uso de la intertextualidad en cuatro novelas escritas por tres autores contemporáneos: el brasileño Bernardo Carvalho, el español Eduardo Lago y el mexicano-peruano Mario Bellatín. En primer lugar, analizamos la construcción de sus historias a partir de transformaciones en sus respectivos hipotextos, del uso de figuras en préstamo, y del diálogo ideológico que dichas novelas mantienen con anteriores visiones del mundo. Los conceptos bajtinianos de dialogismo, polif...

  8. Caracterização e classificação de cambissolos do arquipélago de Fernando de Noronha, Pernambuco

    OpenAIRE

    Marques,Flávio Adriano; Ribeiro,Mateus Rosas; Bittar,Sheila Maria Bretas; Lima Neto,José de Almeida; Lima,José Fernando Wanderley Fernandes

    2007-01-01

    Este trabalho visou caracterizar e classificar Cambissolos de ocorrência comum no Arquipélago de Fernando de Noronha, com o objetivo de testar e contribuir para o desenvolvimento do Sistema Brasileiro de Classificação de Solos (SiBCS). Além disso, uma melhor compreensão desses solos e de sua distribuição na paisagem é de grande importância no planejamento do uso da terra, para nortear ações governamentais visando à exploração sustentável desse complexo turístico-ecológico. Com base no Mapa De...

  9. Tobacco related knowledge and support for smoke-free policies among community pharmacists in Lagos state, Nigeria

    Directory of Open Access Journals (Sweden)

    Poluyi EO

    2015-03-01

    Full Text Available Background: There are no safe levels of exposure to second hand smoke and smoke-free policies are effective in reducing the burden of tobacco-related diseases and death. Pharmacists, as a unique group of health professionals, might be able to play a role in the promotion of smoke-free policies. Objective: To determine the tobacco-related knowledge of community pharmacists and assess their support for smoke-free policies in Lagos state, Nigeria. Methods: A cross-sectional descriptive study design using both quantitative and qualitative methods was employed. Two hundred and twelve randomly selected community pharmacists were surveyed using a pre-tested self-administered questionnaire. In addition, one focus group discussion was conducted with ten members of the Lagos state branch of the Association of Community Pharmacists of Nigeria. Results: The quantitative survey revealed that the majority (72.1% of the respondents were aged between 20 and 40 years, predominantly male (60.8%, Yoruba (50.2% or Igbo (40.3% ethnicity and had been practicing pharmacy for ten years or less (72.2%. A majority (90.1% of respondents were aware that tobacco is harmful to health. Slightly less (75.8% were aware that second hand smoke is harmful to health. Among the listed diseases, pharmacists responded that lung (84.4% and esophageal (68.9% cancers were the most common diseases associated with tobacco use. Less than half of those surveyed associated tobacco use with heart disease (46.9%, chronic obstructive pulmonary disease (27.8%, bladder cancer (47.2%, peripheral vascular disease (35.8% and sudden death (31.1%. Only 51.9% had heard of the World Health Organization Framework Convention on Tobacco Control (WHO FCTC. A little over half of the respondents (53.8% were aware of any law in Nigeria controlling tobacco use. The majority of respondents supported a ban on smoking in homes (83.5%, in public places (79.2%, and in restaurants, nightclubs and bars (73.6%. For

  10. Smoking habits, awareness of risks, and attitude towards tobacco control policies among medical students in Lagos, Nigeria.

    Science.gov (United States)

    Dania, Michelle G; Ozoh, Obianuju B; Bandele, Emmanuel O

    2015-01-01

    This study aimed to assess the prevalence of cigarette smoking among medical students, and to determine their level of knowledge regarding risk associated with cigarette smoking and their attitude and behavior towards tobacco control strategies and policies. A stratified random sampling approach was used to select participants. A modified version of the the Global Health Professional Students Survey questionnaire was self-administered. Descriptive statistics were applied and comparisons were done using chi-square test. Multivariate logistic regression was used to obtain the significant determinants of smoking. A P smoking and current smoking was 9.6 and 1.2%, respectively. Age > 21, having a smoking father, and use of alcohol were significantly associated with ever smoking. Knowledge of smoking as a risk for emphysema was 72.8%, coronary artery disease 82.8%, stroke 68.8%, and low birth weight 76.4%. There were 103 (41.2%) students aware of antidepressant usage in smoking cessation. One hundred and ninety-five (78%) offered smoking cessation advice if a smoker had no smoking-related disease and did not seek their opinion about smoking, 68.8% affirmed to having adequate knowledge on smoking cessation, and 56.8% had received formal training on smoking cessation techniques. The ban on cigarette smoking in enclosed public places was supported by 92.4%. The prevalence of current cigarette smoking among medical students in Lagos is relatively low. Gaps exist in the level of knowledge of the students regarding risks of cigarette smoking, tobacco cessation strategies, and in their attitude and behavior towards offering tobacco cessation advice. There is need therefore to include formal training on tobacco control strategies at an early stage in the medical curriculum.

  11. Extending health insurance coverage to the informal sector: Lessons from a private micro health insurance scheme in Lagos, Nigeria.

    Science.gov (United States)

    Peterson, Lauren; Comfort, Alison; Hatt, Laurel; van Bastelaer, Thierry

    2018-04-15

    As a growing number of low- and middle-income countries commit to achieving universal health coverage, one key challenge is how to extend coverage to informal sector workers. Micro health insurance (MHI) provides a potential model to finance health services for this population. This study presents lessons from a pilot study of a mandatory MHI plan offered by a private insurance company and distributed through a microfinance bank to urban, informal sector workers in Lagos, Nigeria. Study methods included a survey of microfinance clients, key informant interviews, and a review of administrative records. Demographic, health care seeking, and willingness-to-pay data suggested that microfinance clients, particularly women, could benefit from a comprehensive MHI plan that improved access to health care and reduced out-of-pocket spending on health services. However, administrative data revealed declining enrollment, and key informant interviews further suggested low use of the health insurance plan. Key implementation challenges, including changes to mandatory enrollment requirements, insufficient client education and marketing, misaligned incentives, and weak back-office systems, undermined enrollment and use of the plan. Mandatory MHI plans, intended to mitigate adverse selection and facilitate private insurers' entry into new markets, present challenges for covering informal sector workers, including when distributed through agents such as a microfinance bank. Properly aligning the incentives of the insurer and the agent are critical to effectively distribute and service insurance. Further, an urban environment presents unique challenges for distributing MHI, addressing client perceptions of health insurance, and meeting their health care needs. Copyright © 2018 John Wiley & Sons, Ltd.

  12. U-Th and 10Be constraints on sediment recycling in proglacial settings, Lago Buenos Aires, Patagonia

    Science.gov (United States)

    Cogez, Antoine; Herman, Frédéric; Pelt, Éric; Reuschlé, Thierry; Morvan, Gilles; Darvill, Christopher M.; Norton, Kevin P.; Christl, Marcus; Märki, Lena; Chabaux, François

    2018-03-01

    The estimation of sediment transfer times remains a challenge to our understanding of sediment budgets and the relationships between erosion and climate. Uranium (U) and thorium (Th) isotope disequilibria offer a means of more robustly constraining sediment transfer times. Here, we present new uranium and thorium disequilibrium data for a series of nested moraines around Lago Buenos Aires in Argentine Patagonia. The glacial chronology for the area is constrained using in situ cosmogenic 10Be analysis of glacial outwash. Sediment transfer times within the periglacial domain were estimated by comparing the deposition ages of moraines to the theoretical age of sediment production, i.e., the comminution age inferred from U disequilibrium data and recoil loss factor estimates. Our data show first that the classical comminution age approach must include weathering processes accounted for by measuring Th disequilibrium. Second, our combined data suggest that the pre-deposition history of the moraine sediments is not negligible, as evidenced by the large disequilibrium of the youngest moraines despite the equilibrium of the corresponding glacial flour. Monte Carlo simulations suggest that weathering was more intense before the deposition of the moraines and that the transfer time of the fine sediments to the moraines was on the order of 100-200 kyr. Long transfer times could result from a combination of long sediment residence times in the proglacial lake (recurrence time of a glacial cycle) and the remobilization of sediments from moraines deposited during previous glacial cycles. 10Be data suggest that some glacial cycles are absent from the preserved moraine record (seemingly every second cycle), supporting a model of reworking moraines and/or fluctuations in the extent of glacial advances. The chronological pattern is consistent with the U-Th disequilibrium data and the 100-200 kyr transfer time. This long transfer time raises the question of the proportion of freshly

  13. Evolución paleohidrológica de la cuenca del Lago Titicaca durante el Holoceno

    Directory of Open Access Journals (Sweden)

    1995-01-01

    Full Text Available ÉVOLUTION PALÉOHYDROLOGIQUE DU BASSIN DU LAC TITICACA DURANT L’HOLOCÈNE. L’utilisation d’une fonction de transfert ostracodes/bathymétrie a permis, à partir des résultats de 3 sondages, de reconstruire la paléohydrologie du lac Titicaca depuis 8 000 ans BP. Les résultats obtenus révèlent une évolution complexe des bassins lacustres. D’une manière générale, l’ensemble de l’Holocène est caractérisé par des bas niveaux, et plus particulièrement entre 8 000 et 3 900 ans BP. La utilización de una función de transferencia ostrácodos/batimetría permitió, a partir de los resultados de 3 sondeos, reconstruir la paleohidrología del lago Titicaca desde hace 8 000 años BP. Los resultados obtenidos revelan una evolución compleja de las cuencas lacustres. De una manera general, el conjunto del Holoceno se caracteriza por niveles bajos, especialmente entre 8 000 y 3 900 años BP. LAKE TITICACA PALEOHYDROLOGICAL EVOLUTION DURING THE HOLOCENE. A transfer function based on ostracod faunas was used to estimate past water depths of Lake Titicaca during the last 8 000 yrs BP. The results obtained on 3 cores revealed a complex evolution of the lacustrine basins. In general terms, the Holocene was characterized by low water levels, especially between ca. 8 000 and 3 900 yrs BP.

  14. Combination of GIS and multicriteria analysis to delineate polluted zones in Baruwa Community of Lagos, Southwestern Nigeria

    International Nuclear Information System (INIS)

    Ehinolam, O.A.; Oladunjoye, M.A.; Okwugoli, U.G.

    2004-01-01

    Nineteen hand-dug wells were sampled from five different localities within Baruwa community of Lagos namely: Baruwa (BAR), Fatade (FATJ, Gowon Estate (GOW), Abesan (ABE), and Low Cost Housing Estate (LCH). Three control hand dug wells were also sampled from Ipaja (IPA), Asipa (ASI) and Agege (AGE). Chemical and statistical analyses were carried out on the water samples to determine their quality and usage while electrical resistively soundings were conducted to determine the aquiferous units. The study area was mapped by GIS using parameters such as distance from spillage point, total dissolved solid, conductivity, depth of water table, altitude etc. The present study focused on the use of GIS, hydrochemical and geophysical techniques to delineate polluted zones in the Baruwa community aquifers and to suggest possible remedial measures. Hydrochemical results show that samples collected from Baruwa community have been contaminated while samples collected from the control wells are potable. The results of the sounding data show a system of four to five geoelectric layers with variable thicknesses. The lithounits include top soil, saturated clay, sandy clay, sand and conglomeratic sand with average resistivity of the 64, 32, 167, 278 and 1299 m respectively. The relatively high resistivity of the first aquifer (20 m) suggests hydrocarbon contamination from wells within Baruwa community while, low resistivity values were observed from the first aquifers of the control wells. However, prolific uncontaminated aquifers constitute the last layer (>30 m) and could be recommended for borehole drilling in the study area. The outcome of this investigation could be used for groundwater exploration in the area. The outcome of this investigation could be used for groundwater exploration in the area and could also be applied to the broader domain of land-use management

  15. Use of HIV Screening Services and Sexual Behavior of In-School Adolescents in Surulere LGA, Lagos State.

    Science.gov (United States)

    Sekoni, A O; Somefun, E O; Fatoba, O O; Onajole, A T

    2015-01-01

    The health and development.of populations irrespective of where they live is dependent on their behaviour. Adolescents constitute a huge chunk of the global population. A high proportion of the burden of diseases therefore occur in this age group as well. The maturation process occurs throughout this period and behaviours adopted often last for life and are determinants of healthy adult life. High prevalence of Sexually Transmitted Infections including Human Immunodeficiency Virus has been documented in adolescents. This study was carried out to assess the use of HIV screening services and sexual behaviour of in-school adolescents in Surulere an urban community in Lagos State, Nigeria. Cross sectional descriptive study design was used. Simple random sampling was used to select 9 public senior secondary schools in Surulere Local Government Area. All the enrolled and willing students in SSS3 who were available during the period of data collection were included in the study (1,029). Information was collected with a self-adrministered questionnaire. Data analysis was done with Epi info version 3.5.4. Frequency tables were generated and analysis was explored using chi square at. psexually active, among this group 20% engaged in transactional sex. Only 36.8% used condom at first sex which increased to 57.2% at last sex, however consistent condom use was practiced by 22.4%. Students who are sexually experienced (psexual behaviour, use of HCT services and other STI prevention strategies was poor. It is essential that young people have access to and utilize all HIV prevention tools at their disposal.

  16. Prevalence and correlates of influenza-A in piggery workers and pigs in two communities in Lagos, Nigeria.

    Science.gov (United States)

    Awosanya, Emmanuel Jolaoluwa; Ogundipe, Gabriel; Babalobi, Olutayo; Omilabu, Sunday

    2013-01-01

    Worldwide, three Influenza-A virus subtypes (H1N1, H1N2 and H3N2) in swine are major public health issues. In Nigeria, the existence of these subtypes in pigs has not been well studied. This study aimed at determining the prevalence and correlates of Influenza-A viruses circulating in piggery workers and pigs in Oke-aro and Goshen communities in Lagos, Nigeria. Nasal swabs were taken from 197 consenting piggery workers and 281 randomly selected pigs to determine the prevalence of Influenza-A (H1, H3, H5) using Reverse Transcriptase Polymerase Chain Reaction test (gene M). An interviewer administered questionnaire was used to collect information on demography, Influenza-A related symptoms experienced, personal hygiene and management practices from the piggery workers. Descriptive statistics was used and chi square test performed at 5% significant level. All piggery workers and pigs' nasal swabs tested negative for Influenza-A viruses, hence, association could not be tested. Mean age of piggery workers was 41 ± 13.6 years and 60% were females. Forty two percent were farm attendants, 38.0% were pig farmers and the rest butchers. Nineteen percent had history of headache; 14.0% had catarrh and cough; 4.0% had sore-throat; 5.0% had diarrhea; while 48.0% had muscle pain at the time of data collection. The mean body temperature for the pig workers was 36.5 ± 0.5 °C. A significant difference (pInfluenza-A (H1, H3, H5) viruses. The current practices of the piggery workers should be encouraged.

  17. Dietary practices and nutritional status of under-five children in rural and urban communities of Lagos State, Nigeria.

    Science.gov (United States)

    Senbanjo, Idowu O; Olayiwola, Ibiyemi O; Afolabi, Wasiu A O

    2016-01-01

    Evidence shows that urban children generally have a better nutritional status than their rural counterparts. However, data establishing whether this difference in prevalence of undernutrition could be ascribed to difference in dietary practices are few. The aim of this study was to compare dietary practices and nutritional status of children in rural and urban communities of Lagos State, Nigeria. This was a comparative-analytical study conducted using the multistage sampling technique to select the study cases. A total of 300 mother-child pairs were studied, including 150 each from rural and urban communities. Data collected include demographics, socioeconomic characteristics, feeding practices and anthropometric measurements of the participants. Food intake data were collected using 24-h dietary recall. Malnutrition in children was determined by calculating the prevalence of low height-for-age (stunting), low weight-for-age (underweight), and low weight-for-height (wasting) using the World Health Organization cutoff points. The prevalence of exclusive breastfeeding for 6 months (25.3% vs. 28.7%; P = 0.516), use of formula feeds (48.7% vs. 44%; P = 0.077), and mean age of child at introduction of semisolid foods (7.54 ± 4.0 months vs. 8.51 ± 7.3 months; P = 0.117) were not significantly different between urban and rural communities. The diversity of food choices and frequencies of consumption were similar between urban and rural communities. However, prevalence levels of underweight and stunted children were significantly higher in rural than that of urban communities (19.4% vs. 9.3%, P rural communities.

  18. Managing amalgam phase down: An evaluation of mercury vapor levels in a dental center in Lagos, Nigeria

    Directory of Open Access Journals (Sweden)

    Adolphous Odofin Loto

    2017-01-01

    Full Text Available Background: Occupational exposure to elemental mercury vapor in a dental setting is mainly through inhalation exposure during preparation, insertion, polishing, and removal of amalgam fillings including storage of amalgam waste before disposal. This study aims to determine the indoor air levels of elemental mercury vapor in the dental operatories and ancillary sites at the Lagos State University Teaching Hospital (LASUTH. Materials and Methods: Samples of the ambient air were taken at seven locations the Dental Center of LASUTH by a trained technician between 9:00 and 11:00 a.m. This was done at a predetermined height (41/2feet above the floor for mercury vapor concentration using Lumex 915 light data logger mercury vapor analyzer manufactured by Ohio Lumex Company Incorporation, USA®. Results: The highest level of 1434 ng/m3 of mercury vapor in the air was found in the restorative clinic while the lowest of 23 ng Hg/m3 was found in the ambient air at the entrance of the dental Center. The Oral Surgery clinic had mercury vapor level of 318 ng/m3 which was slightly higher than Environmental Protection Agency recommended value of 0.3 μg/m3. Conclusion: An unacceptably high level of mercury vapor was detected, especially in the restorative clinic. Every dental clinic should have its ambient air evaluated for mercury vapor level for the purpose of forming a baseline data for monitoring purposes during the period of phase down of amalgam use. Best practices should also be instituted to reduce the level of exposure of patients and dental care workers to mercury vapor.

  19. High-resolution paleoclimate records of Holocene hydroclimatic variability in the Eastern Colombian Andes from Lago de Tota

    Science.gov (United States)

    Ahmed, M. N.; Bird, B. W.; Escobar, J.; Polissar, P. J.

    2017-12-01

    The Northern Hemisphere (NH) South American Monsoon (SAM) is a significant source of precipitation for the North Andes (north of 0˚) and has major control over regional hydroclimate variability. Holocene-length histories of NH SAM variability are few compared to the Southern Hemisphere (SH), limiting understanding of how these systems are connected on orbital and shorter timescales. Here, we present multi-proxy lake-sediment-based paleoclimate and paleohydrologic reconstructions from Lago de Tota, Colombia, using sedimentological, geochemical and leaf-wax hydrogen isotopic indicators from radiometically dated cores. The results indicate periods of wet and dry climate phases during the past 9000 BP with an average Holocene sedimentation rate 33cm/kyr. An increase in total organic matter (TOM) content and finer grain-size distributions was observed from 8000 to 3200 BP, suggesting a period of high lake level. This was followed by lower TOM and coarser grain sizes, suggesting lower lake levels from 3200 BP to the present. Although Tota's lake level pattern is antiphased with other lake level reconstructions from the NH and SH Andes, it is consistent with hypothesized changes in atmospheric convection over the Andes during the Holocene and the way in which they would be modified by the so-called dry island effect in the Colombian Andes. This suggests that a common forcing mechanism can be invoked to explain differing millennial-scale Andean hydroclimate changes, namely atmospheric convection. Orbital and Pacific atmosphere-forcing are therefore likely to have played a significant role in driving pan-Andean hydroclimate variability based on their inter-hemispheric influence on Andean convection.

  20. mHealth: Knowledge and use among doctors and nurses in public secondary health-care facilities of Lagos, Nigeria

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    Bukola Samuel Owolabi

    2018-01-01

    Full Text Available Objectives: Mobile health (mHealth is gaining importance worldwide, changing and improving the way healthcare and services are provided, but its role is just emerging in Nigeria. This study aimed to assess the knowledge and use of mHealth among health workers and the provisions for its use in public secondary health-care facilities of Lagos State, Nigeria. Methods: The study was a descriptive cross-sectional study carried out among 65 doctors and 135 nurses selected using a two-staged sampling method. Data were collected with pretested self-administered questionnaires and analyzed with EpiInfo™ 7. Results: Majority (doctors 84.6%, nurses 91.1% had not heard of the term “mHealth,” but most (doctors 96.9%, nurses 87.4% were aware of the use of mobile phones in health-care delivery. Only three (27.3% (health call centers/health-care telephone helpline, appointment reminders, and mobile telemedicine out of 11 mHealth components listed were mostly known. Most doctors simply used patient monitoring/surveillance and mobile telemedicine, while nurses mainly used treatment compliance and appointment reminder services. Majority were willing to use more mHealth services if available in their hospital. All the doctors and 97% of nurses had mobile phones. However, only about one-quarter (27.5% had smartphones with applications used for mHealth purposes. Conclusions: Knowledge, awareness, and use of mHealth services were low. Doctors and nurses should be enlightened and trained on ways to use mHealth services to improve health-care delivery, mHealth services should be made available in the hospitals, and use of smartphones encouraged as they portend better adaptability for mHealth use.

  1. Assessment of ultrasound equipment as a possible source of nosocomial infection in Lagos state hospitals and radio-diagnostic centres

    International Nuclear Information System (INIS)

    Akpochafor, M.O.; Eze, C.U.; Adeneye, S.O.; Ajekigbe, A.T.

    2015-01-01

    Aim: To assess the role of ultrasound equipment as a possible source of nosocomial infection in Lagos metropolis, Nigeria. Methods: Microbiological cultures were carried out on samples obtained from ultrasound probes, gel and couch before and after scanning period. Cultures were incubated in a culture plate (Chocolate and MacConkey agar) for 48 h at a temperature of 37 ° in order to grow microorganism, after which the culture plate was examined microscopically against a bright light in order to identify the isolated organisms based on their colonial characteristics. Results: Transabdominal ultrasound probes, transvaginal probe, ultrasound couch and ultrasound gel all were contaminated with microorganisms. Staphylococcus aureus was the most frequent and most common organisms found (33.8%). Other organisms such as Staphylococcus epidermidis (15.4%), Candida albicans (6.2%), aerobic spore formers (26.2%), Klebsiella pneumonia (6.2%), Pseudomonas aeruginosa (3.1%), among others were also identified. Conclusion: The ultrasound equipment posed a significant risk for infection transmission. Patients who underwent ultrasonography within the period of the study had significant chances of being infected with Staphylococcus aureus, S. epidermidis and Aerobic spore formers. - Highlights: • Ultrasound equipment has been shown to be a possible source of nosocomial infection for patient undergoing ultrasonography. • The study showed that Staphylococcus aureus was the most commonly isolated organism. • Transabdominal probe was the most commonly contaminated ultrasound equipment in the finding. • The ultrasound gel was also contaminated with organisms like S. aureus, etc. • There was a statistical significant difference between site of collection of sample and growth density of microorganisms (p = 0.03)

  2. Competencias técnicas investigativas en los docentes del núcleo LUZ - Costa Oriental del Lago

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    Magdy De las Sala

    2011-08-01

    Full Text Available El presente estudio estuvo dirigido a describir las competencias técnicas de los docentes universitarios hacia la investigación. El estudio se clasificó como descriptivo, con un diseño no experimental, de campo y transversal. La investigación se sustentó teóricamente en los aportes de Tobón (2007, Maldonado (2002 y Benavides (2002, entre otros. La población estuvo conformada por 224 docentes del Núcleo LUZ – Costa Oriental del Lago y una muestra de 86 docentes. La recolección de datos se obtuvo a través de un instrumento tipo escala Lickert, el cual se sometió a la validez de contenido a través del juicio de expertos y se verificó la consistencia interna por medio de la correlación ítem-total. La confiabilidad se determinó a través del método de Alfa de Cronbach dando como resultado un rtt de 0,9518 para el instrumento que mide la variable competencias técnicas. Los datos fueron analizados con estadística descriptiva. Se concluyó que los docentes en cuanto a la dimensión conocimientos, manifiestan tener que reforzar la actualización, poseen debilidades en la experiencia en el área, en la divulgación y coordinación de proyectos. En cuanto a las habilidades, estas son altas en cuanto al planteamiento de investigaciones pero con debilidades en los aspectos estadísticos y de construcción de instrumentos de medición.

  3. Improving the management of acute diarrhoea and dehydration in under-5 children in a paediatric referral facility in Lagos, Nigeria.

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    Senbanjo, Idowu O; Ch'ng, Chin Lye; Allen, Stephen J

    2017-02-01

    Mortality from acute diarrhoea and dehydration (AD/D) in children is high despite existing management guidelines. The aim of this study was to identify deficiencies in the management of AD/D by health staff and assess changes in management after a training intervention in a paediatric referral facility in Lagos, Nigeria. In a retrospective review of case notes, the management of AD/D was assessed using WHO guidelines as the standard. An e-learning module was developed that directly addressed deficiencies and was used to train health staff. Changes in the management of AD/D were assessed by re-auditing case notes. There were learning needs among health staff in the management of AD/D. Altogether, 34 (97.1%) of 35 residents were trained. Training resulted in modest improvements in the number of children in whom nutritional status was assessed, use of oral rather than intravenous fluids for rehydration and reducing unnecessary laboratory tests. Training resulted in marked improvements in the correct volume of (pre- vs. post-training 6.3% vs. 94.1%, P<0.001) and follow-up of fluid therapy (8.1% vs. 98.0%; P<0.001), prescription of zinc (41.6% vs. 85.1%, P<0.001) and providing advice on when to return after discharge (77.6% vs. 96.0%, P<0.001). Although statistically significant, the minimal improvements in antibiotic use (43.8% vs. 56.6%, P = 0.03), re-starting feeds (10.6% vs. 38.6%, P<0.001) and counselling about feeding (11.8% vs. 33.7%, P<0.001) highlighted areas for further training. In low-resource countries, clinical auditing and training can significantly improve the management of illnesses that contribute to child deaths and identify areas where further training is required.

  4. The National Health Insurance Scheme (NHIS): a survey of knowledge and opinions of Nigerian dentists' in Lagos.

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    Adeniyi, A A; Onajole, A T

    2010-03-01

    This study was designed to assess the knowledge and perceptions of Nigerian dentists to the National Health Insurance scheme (NHIS). A cross-sectional descriptive survey was conducted amongst 250 dentists employed in private and public dental clinics in Lagos State, Nigeria. The survey instrument was a self-administered questionnaire designed to assess their knowledge and attitudes towards the scheme. Data analysis was done using the Epi-Info statistical software (version 6.04). Statistical tools used included measures of central tendency, frequency distribution and chi-square test. A total of 216 dentists (response rate of 82.4%) participated in this study. Most 132 (61.1%) of the respondents had a fair knowledge of the NHIS, while 22 (10.2%) and 62 (28.7%) had poor and good knowledge respectively. Majority (70.4%) viewed the NHIS as a good idea that will succeed if properly implemented. Most (76.6%) respondents also believed that the scheme will improve access to oral health services, affordability of services (71.4%), availability of the services (68.3%) and recognition of dentistry as a profession (62.4%). Most of the respondents (66.2%) considered oral health care as not properly positioned in the NHIS and 154 respondents (74.4%) found the current position of oral health on the NHIS unacceptable. A good number of the respondents (77.3%) would like dentistry to operate at the primary care level on the NHIS. Majority of the dentists involved in this study had some knowledge of the NHIS and were generally positively disposed towards the scheme and viewed it as a good idea.

  5. The small-scale urban reservoir fisheries of Lago Paranoá, Brasília, DF, Brazil

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    T. Walter

    Full Text Available In many cases in large urban centers, which have appropriate waterbodies, small-scale fisheries are the only source of cheap protein for the poor. In Lago Paranoá, located in Brasília, the capital city of Brazil, fishing was studied by conducting interviews with 53 fishers filling in logbooks from March, 1999 to March, 2000 in three fishing communities. The fishers come from the poorest towns around Brasília, known as satellite-towns. They have been living there on average for 21.7 years (s = 9.6 years, their families have 4.9 members (s = 3.6 on average and 44.2% do not have a basic education. However, such characteristics are similar to the socioeconomic indices of the metropolis where they live. In spite of being illegal between 1966 and 2000, fishing generated an average monthly income of U$ 239.00 (s = U$ 171.77. The Nile Tilapia Oreocrhromis niloticus is the main captured species (85% of a total number of landings in weight of 62.5 t.. Fishing is carried out in rowing boats, individually or in pairs. The fishing equipment used are gillnets and castnets. Gillnets were used actively, whereby the surface of the water is beaten with a stick to drive Tilapias towards nets as they have the ability to swim backwards. This fishing strategy was used in 64.7% of the fisheries, followed by castnets (31.1% and by gillnets which were used less (4.2%. The fish is sold directly in the streets and fairs of the satellite-towns to middlemen or to bar owners. Three communities have different strategies in terms of fishing equipments, fishing spots and commercialization. Consequently, there are statistically significant differences in relation to the monthly income for each one of these communities.

  6. The small-scale urban reservoir fisheries of Lago Paranoá, Brasília, DF, Brazil.

    Science.gov (United States)

    Walter, T; Petrere, M

    2007-02-01

    In many cases in large urban centers, which have appropriate waterbodies, small-scale fisheries are the only source of cheap protein for the poor. In Lago Paranoá, located in Brasília, the capital city of Brazil, fishing was studied by conducting interviews with 53 fishers filling in logbooks from March, 1999 to March, 2000 in three fishing communities. The fishers come from the poorest towns around Brasília, known as satellite-towns. They have been living there on average for 21.7 years (s = 9.6 years), their families have 4.9 members (s = 3.6) on average and 44.2% do not have a basic education. However, such characteristics are similar to the socioeconomic indices of the metropolis where they live. In spite of being illegal between 1966 and 2000, fishing generated an average monthly income of U 239.00 dollars (s = U 171.77 dollars). The Nile Tilapia Oreocrhromis niloticus is the main captured species (85% of a total number of landings in weight of 62.5 t.). Fishing is carried out in rowing boats, individually or in pairs. The fishing equipment used are gillnets and castnets. Gillnets were used actively, whereby the surface of the water is beaten with a stick to drive Tilapias towards nets as they have the ability to swim backwards. This fishing strategy was used in 64.7% of the fisheries, followed by castnets (31.1%) and by gillnets which were used less (4.2%). The fish is sold directly in the streets and fairs of the satellite-towns to middlemen or to bar owners. Three communities have different strategies in terms of fishing equipments, fishing spots and commercialization. Consequently, there are statistically significant differences in relation to the monthly income for each one of these communities.

  7. Assessing the speciation pattern of lead and zinc in surface water collected from Abegede creek, Ijora and Lagos

    International Nuclear Information System (INIS)

    Adeniyi, A.A.; Okedeyi, O.O.

    2004-01-01

    A two stage sequential extraction procedure for the speciation of zinc and lead has been applied to surface water randomly collected from three sites in Abegede Creek, Ijora and Lagos. The determination of the labile and non-labile metals species was carried out by flame atomic absorption spectrophotometry (FAAS). The mean values of non-labile zinc and lead concentrations from the three sites, A, B and Care 0.54 minus plus 0.25 mg/l; 0.55 plus minus 0.26 mg/l;1.13 plus 0.76 mg/l; respectively for zinc and 0.13 plus minus 0.09 mg/l; 0.17 plus minus 0.07 mg/l;0.42 plus minus 0.23 mg/l respectively for lead. These are higher than for the labile species in the three sites;0.14 plus minus 0.07 mg/l; 0.21 plus minus 0.22 mg/l; 0.73 plus minus 0.82 mg/l, respectively for zinc and ND; 0.02 plus minus 0.04 mg/l; 0.16 plus minus 0.22 mg/l, respectively for lead. The statistical analysis of variance of the distribution of zinc and lead in the three sites were estimated at 95% confidence level. The values of metal and obtained were compared with Nigeria's background values for some rivers and the World Health Organization limits for drinking water respectively and found to be generally higher especially for lead levels. The probable sources of zinc and lead in the Creek are from natural and point sources, although there could be non-point source contributions from urban run-offs and vehicular exhaust. (author)

  8. Usage of Complementary and Alternative Medicine (CAM) among osteoarthritis patients attending an urban multi-specialist hospital in Lagos, Nigeria.

    Science.gov (United States)

    Obalum, D C; Ogo, C N

    2011-03-01

    Osteoarthritis (OA), a chronic degenerative disease of synovial joints is characterised by pain and stiffness. Aim of treatment is pain relief. Complementary and alternative medicine (CAM) refers to practices which are not an integral part of orthodox medicine. To determine the pattern of usage of CAM among OA patients in Nigeria. Consecutive patients with OA attending orthopaedic clinic of Havana Specialist Hospital, Lagos, Nigeria were interviewed over a 6- month period st st of 1 May to 31 October 2007 on usage of CAM. Structured and open-ended questions were used. Demographic data, duration of OA and treatment as well as compliance to orthodox medications were documented. One hundred and sixty four patients were studied.120 (73.25%) were females and 44(26.89%) were males. Respondents age range between 35-74 years. 66(40.2%) patients used CAM. 35(53.0%) had done so before presenting to the hospital. The most commonly used CAM were herbal products used by 50(75.8%) of CAM users. Among herbal product users, 74.0% used non- specific local products, 30.0% used ginger, 36.0% used garlic and 28.0% used Aloe Vera. Among CAM users, 35(53.0%) used local embrocation and massage, 10(15.2%) used spiritual methods. There was no significant difference in demographics, clinical characteristics and pain control among CAM users and non-users. Many OA patients receiving orthodox therapy also use CAM. Medical doctors need to keep a wary eye on CAM usage among patients and enquire about this health-seeking behaviour in order to educate them on possible drug interactions, adverse effects and long term complications.

  9. Seasonal changes in the δ13C and δ15N signatures of the Lago Maggiore pelagic food web

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    Marina MANCA

    2011-08-01

    Full Text Available Seasonal variation in the relative contributions of littoral and pelagic food sources to the diets of open-water zooplankton and subsequent changes in their trophic positions were investigated with carbon and nitrogen Stable Isotope Analysis (SIA. We selected three open water stations as truly pelagic, but also influenced by littoral and riverine carbon sources. During each of the four seasons, integrated pelagic zooplankton samples were collected over 0-50 m depth intervals at each site along with seston in the size range 1.2-76 μm. In addition, vertical temperature profiles were measured. Littoral benthos from three sites along the main longitudinal axis of the lake was sampled to serve as a reference for tracing Lago Maggiore's littoral carbon isotopic signature. Among stations differences in δ13C and δ15N signatures of the different components of the pelagic food web, from seston to predatory zooplankton, were statistically non significant, thus confirming that allochthonous input may become important only after exceptional rainfall events. Changes in the δ13C pelagic baseline mirrored mean water temperature (0-50 m seasonal changes. Similarly to Lake Geneva, they were likely driven by changes in carbon sources for phytoplankton growth during stratification and vertical water mixing. Differently from what observed for the other taxa, the role of littoral food sources was far from negligible (>50% for diaptomids during winter and spring. We do not know however, whether such a result could be at least partially attributed to the heavy infestation by algal epibionts, or was consequent to the fact that these zooplankters may carry littoral carbon to the pelagial via horizontal migration. In winter, Bythotrephes longimanus was able to prey on Cyclops, thus occupying a trophic position comparable to that of planktivorous fish. Such a result confirms an ability of this visual, invertebrate predator to compete with young zooplanktivorous fish

  10. Assessment of gender differentials in economic and technical efficiency of poultry egg, a case study in Lagos State, Nigeria.

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    Hafis Odunlami

    2016-03-01

    Full Text Available Gender has been seen as an important factor in the distribution and utilization of productive resources worldwide. In the agricultural sector, gender differential could influence the sourcing and efficient utilization of factors of production, particularly in the livestock sub-sector of the economy. This study assessed the gender differentials in economic and technical efficiency of poultry eggs production in Lagos State, Nigeria. Multistage sampling technique was used to select respondent poultry farmers. The first and second stages were the purposive selection of five Local Government Areas (LGAs reputed for poultry production and farm settlements in the state. The third stage involved a simple random sampling of 150 poultry farms consisting of 75 farms each managed by a male and a female Stochastic Frontier Analysis (SFA. The SFA revealed that for male management of poultry egg farms, labour input (p<0.01 and cost of medications (p<0.05 increased the poultry egg output. On the other hand, for female management, stock of birds (p<0.01, labour input (p<0.01 and feed cost (p<0.01 were the factors that increased poultry eggs output. The inefficiency model revealed that male farmers were more technically efficient (p<0.01 than female counterparts. Female managed poultry farms had less productivity (0.90 compared to males(1.22. However, 88.1% of male farms compared to 86.7% of female farms had economic efficiency ratios between 0.29 and 0.79. The study concluded that gender had impact on poultry farmers’ efficiency in the study area. The study therefore recommended that training should be organised for female managed farms while male managed farms should utilize less of cost intensive capital input.

  11. Niveles de concentración de mercurio total en tilapia en los sitios de pesca de las comunidades pesqueras del Lago Xolotlán

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    Mario Alberto Gutiérrez Gutiérrez

    2001-08-01

    Full Text Available El mercurio depositado en el laguna Xolotlán se bioacumula en los peces haciéndose disponible para los humanos que se alimentan de ellos. Se determinaron las concentraciones de mercurio total (HgT en 29 muestras de músculo axial de peces tilapia (Oreochromis sp de talla comercial, en nueve (9 sitios de pesca del lago Xolotlán. El promedio de concentración de mercurio total detectado con EAA Varian-A50 fue de 0.0262 gg/g, con valores mínimos menores que el límite de detección pg/gyun máximo de 0.119 gg/g. El sitio de muestreo con mayor promedio de concentración de mercurio total fue San Francisco Libre con 0.0547 gg/g. Las concentraciones más elevadas se presentaron en las tal las menores, con una correlación inversa entre las variables peso y mercurio total, y un coeficiente de correlación de Spearman r 0.309 y p — 0.103. Se concluye que los niveles de mercurio total (HgT en tilapias del lago Xolotlán están relativamente bajos, presentando una tendencia favorable para recomendar su consumo bajo vigilancia de las autoridades sanitarias.

  12. Educational intervention and the health seeking attitude and adherence to therapy by tuberculosis patients from an urban slum in lagos Nigeria.

    Science.gov (United States)

    Olayemi, S O; Oreagba, I A; Akinyede, A; Adepoju, G E

    2009-12-01

    Community based participation has been advocated by a number of international health organisations including the World Health Organization (WHO) as a solution to the problems of poor patient adherence and default from Directly Observed Treatment Short course [DOTs] programmes for tuberculosis control. To determine the impact of a health educational intervention on the management of tuberculosis in relation to the outcome and adherence to therapy by Tuberculosis patients residing in a densely populated urban slum in Lagos, Nigeria. The study was conducted using forty tuberculosis patients (confirmed by acid fast bacilli positive sputum), and selected randomly from those who attend the Mainland Hospital in Lagos. They were divided into two groups of twenty each made up of those to be provided with education intervention at the community level and the control groups followed up at the hospital level only. An initial assessment of the knowledge about tuberculosis management was done through a structured questionnaire for both groups. This was followed by continuous health talks for intervention group in form of neighbourhood self help approach. The results showed that the intervention had a significant impact on the understanding of disease and its management (X(2) =11.842 peducation is therefore beneficial for TB control in Nigeria.

  13. NUEVOS REGISTROS DE ESPECIES DE MURCIÉLAGOS PARA EL DEPARTAMENTO DE SUCRE Y ALGUNOS DATOS SOBRE SU ECOLOGÍA EN ESTA REGIÓN COLOMBIANA

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    SAMPEDRO MARÍN ALCIDES C.

    2007-12-01

    Full Text Available Se realizaron 33 muestreos de murciélagos en diferentes localidades de la zonaurbana y rural del departamento de Sucre, entre los años 2004 y 2005. Se utilizaronredes de niebla, tanto para campo abierto como para refugios, entre las 1800 hs ylas 0600 hs del día siguiente. Se registraron 22 especies, de las cuales seis resultannuevos registros para Sucre: Artibeus obscurus, Sturnira erythromus, Phyllostomuselongatus, Lonchophylla mordax, Peropterix macrotis y Rhogeesa tumida. La familiamás numerosa fue Phyllostomidae. La mayor abundancia relativa (frecuencia decaptura en la zona urbana la presentaron Molossus molossus (78.3%, Artibeusobscurus (65.2% y Loncophylla thomasi (56.5%. En la zona rural la más abundanteresultó Desmodus rotundus (100% de los muestreos, seguida por Noctilio albiventrisy Sacopterix bilineata (30%. Ambas comunidades de murciélagos (urbana y ruralson similares en un 48%, ya que sólo siete de las especies resultaron comunes a lasdos. Los refugios más frecuentados en la zona rural son los árboles, sobre todo elCaracolí (Anacardium excelsum y la mayor riqueza de especies se encontró en losrefugios más grandes. La actividad nocturna es significativamente diferente entre lasespecies (X2 = 323, p mecanismos de reducción de la competencia por el alimento, sobre todo en lasespecies vegetariana

  14. Fenologia de Cornops aquaticum (Orthoptera: Acrididae associado a Eichhornia crassipes (Pontederiaceae em um Lago de Várzea na Amazônia Central, Brasil

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    Carlos Elias BRAGA

    2011-01-01

    Full Text Available La tucura Neotropical, Cornops aquaticum (Bruner, vive asociada a las macrófitas de la familia Pontederiaceae, de las cuales se alimenta. En los lagos de la Amazonia Central, Eichhornia crassipes (Mart. Solms (camalote o aguape constituye la planta huésped más importante de esta tucura. El objetivo de este trabajo fue estudiar la fenología de los adultos y las ninfas de C. aquaticum en los camalotales de E. crassipes, en relación al régimen hidrológico de la Amazonia Central. Los muestreos se realizaron entre los meses de abril de 2006 a agosto de 2007, en el Lago Camaleón (03o17’05”S 60o11’11”O en la Várzea de la Amazonia Central. Los individuos fueron capturados desde una embarcación a motor, utilizando una red entomológica de 70 cm de diámetro. Durante este estudio, se capturaron un total de 850 ejemplares (296 adultos y 554 ninfas. Se observó que la abundancia y la biomasa de los adultos y de las ninfas de C. aquaticum, así como la planta huésped, están estrechamente relacionados con la oscilación estacional del nivel del río (pulso de inundación.

  15. Maternal postnatal care utilization and associated factors: A community-based study among women of child-bearing age in Lagos, Nigeria

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    I P Okafor

    2013-01-01

    Full Text Available Background and Objective: Nigeria has one of the highest maternal and child death rates in the world. Postnatal care is one of the major interventions recommended to reduce maternal and newborn deaths globally. The aim of this study is to determine the utilization of postnatal health services and identify the factors which affect this utilization among mothers of under-fives in Lagos. Methods: This was a cross-sectional study among women of child bearing age in Lagos using structured, interviewer-administered questionnaire. Six hundred women selected by multi stage sampling method were interviewed and data analyzed with EPI-info Version 3.5.1. Results: Two thirds (66.2% of the respondents utilized postnatal health services. Factors which significantly influenced postnatal health services utilization were: number of children (p=0.031, maternal education (p=0.001, religion (Fisher′s exact p= 0.004, number of antenatal care visits (p<0.001 and skilled attendance at birth (p<0.001. Maternal occupation and time taken to the health facility were not significant determinants of utilization. Conclusion: Utilization of postnatal care services was high but not optimal. Interventions to increase family planning use and improve maternal educational status should be undertaken as well as increasing use of focused antenatal care and skilled delivery services.

  16. Quaternary lacustrine braid deltas on Lake General Carrera in southern Chile Deltas entrelazados lacustres del Cuaternario en el lago General Carrera, sur de Chile

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    C. Mike Bell

    2009-01-01

    Full Text Available A series of Quaternary lacustrine braid deltas on the shores of Lake General Carrera in southern Chile formed as a result of falls in lake level. Each delta comprises two components, the delta fan and the beach embayment, each in turn comprising an onshore subaerial and an offshore subaqueous element. The delta fans have a classic Gilbert form with a braided delta top and a steeply inclined delta front. Adjacent to the fans are concave beach embayments that formed parallel with the deltas as they prograded into the lake. The delta sediments consist predominantly of matrix- and clast-supported gravéis to a total composite thickness exceeding 400 m. The depositional environments are dominated by ephemeral river flooding and by storm-driven waves. Beach sediment is sorted, rounded, winnowed and transported alongshore by waves to fill the beach embayment with ridges of very well sorted and well-rounded gravel. A gently-dipping shoreface platform occurs up to 100 m offshore between the beach and the brink point. From the brink point, in water depth of about 8 m, sediment cascades down the steep delta front slope to form long foresets extending to the lake floor. The sedimentary successions therefore wedge in the opposite direction from those of tectonically controlled basin margins where fan growth keeps pace with basin subsidence.Una serie de deltas entrelazados lacustres, pertenecientes al Cuaternario, ubicados en las costas del lago General Carrera, en el sur de Chile, se formaron como resultado de caídas en el nivel del lago. Cada delta consta de dos componentes: el abanico deltaico y la zona de embahiamiento. Cada uno de ellos tiene, a su vez, un elemento subaéreo costero y un elemento subacuático. Los abanicos deltaicos tienen una forma Gilbert clásica con una parte superior de ríos entrelazados y un frente deltaico empinado. Adyacente a los abanicos aluviales existen bahías cóncavas de playa que se formaron de manera paralela a los

  17. Lake Chapala, Mexico: lead distribution in water, sediment and bacteria; Escenarios de la distribucion de plomo en agua, sedimentos y bacterias del lago de Chapala, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, Anne M. [Instituto Mexicano de Tecnologia del Agua, Jiutepec, Morelos (Mexico); Villa-Navia, Adriana [Interventor Ambiental de Occidental de Colombia, Inc. (Colombia); Afferden, Manfred van [Instituto Mexicano de Tecnologia del Agua, Jiutepec, Morelos (Mexico)

    2006-04-15

    To evaluate the distribution of lead in the natural resources of lake Chapala, the adsorption of this metal in bacteria was analyzed and, through published data and the application of a chemical equilibrium model, the risk associated with the consumption of fish and water was estimated. Adsorption experiments of lead in three bacterial strains and simulations of the distribution of lead in the water-sediment-bacteria system indicate that the distribution of lead in the lake depends on variations of water quality such as suspended solids, lead and biomass concentrations. Considering only the lead contained in the bottom sediments, the simulations suggest that concentrations do not exceed the limits nor the criteria for use and protection of water, sediments, and biota. Considering an additional source of lead that locally increases the concentration by a factor of ten, the amount of lead in water and sediments may exceed these limits. The bioaccumulation of lead in lake Chapala was evaluated through calculation of bioconcentration and biomagnification factors, using simulated and published data on lead in fish (Ayla Jay y Ford, 2001). The results indicate that lead may be concentrated 721 and 6,195 times in bacteria and fish, respectively. Furthermore, bioaccumulation of lead in the lake may occur mainly as bioconcentration in fish rather than biomagnification in the food chain. [Spanish] Para evaluar la distribucion de plomo en los recursos naturales en el lago de Chapala se analizo la adsorcion de este metal en bacterias y, mediante datos publicados en la literatura y modelacion numerica, se estimo el riesgo asociado al consumo de peces y agua. Experimentos de adsorcion en tres cepas de bacterias y simulaciones de la distribucion en un sistema agua-sedimentos-bacterias indican que la distribucion del plomo en el lago depende de variaciones en calidad del agua tales como solidos suspendidos totales, plomo total y biomasa. Considerando unicamente el plomo contenido

  18. The relationship between red blood cell distribution width and blood pressure in patients with type 2 diabetes mellitus in Lagos, Nigeria

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    Dada OA

    2014-09-01

    Full Text Available Olusola Akinola Dada,1 Ebele Uche,2 Akinsegun Akinbami,2 Majeed Odesanya,3 Sarah John-Olabode,4 Adewumi Adediran,5 Olajumoke Oshinaike,1 Anthonia Okeoghene Ogbera,1 Olaitan Okunoye,6 Olanrewaju Arogundade,2 Kingsley Aile,7 Timothy Ekwere8 1Department of Medicine, Lagos State University, 2Department of Haematology and Blood Transfusion, Lagos State University, College of Medicine, Ikeja, Nigeria; 3Oak Hospitals, Ikorodu, Lagos, Nigeria; 4Department of Haematology, Ben Carson School of Medicine, Babcock University, Ilisan-Remo, Ogun State, 5Department of Haematology, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Idiaraba, 6Department of Medicine, University of Port Harcourt, River State, 7Department of Haematology and Blood Transfusion, Lagos State University Teaching Hospital, Ikeja, Nigeria; 8Department of Haematology and Blood Transfusion, University of Uyo, Akwa Ibom, Nigeria Background: High red blood cell distribution width (RDW is related to impairment of erythropoiesis, reflecting chronic inflammation and increased levels of oxidative stress, both of which are telltale signs of type 2 diabetics. The aim of this study was to evaluate the relationship between the RDW and fasting blood sugar/blood pressure, and compare the results from diabetics with nondiabetic controls. Methods: This was an unmatched case-control study involving 200 participants consisting of 100 diabetics and 100 nondiabetic controls. Blood (4.5 mL was collected from all of the diabetics and nondiabetic controls, and placed into EDTA anticoagulant tubes. A full blood count was performed using the Sysmex KX-21N, a three-part auto analyzer able to run 19 parameters per sample, including RDW. Blood pressure was measured during sample collection and in a sitting position. Results: The mean fasting blood sugar level was 95.20±30.10 mg/dL in the controls, and 147.85±72.54 mg/dL in the diabetics. The mean blood pressures for diabetics was 138/90 mm

  19. Estudio Ficológico de lagos urbanos artificiales del sur de la provincia de Córdoba Phycological study of artificial urban reservoirs of the South of the province of Córdoba

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    Martín David Novoa

    2006-12-01

    Full Text Available El presente trabajo fue realizado en dos lagos urbanos artificiales de Río Cuarto (Córdoba: Parque Sarmiento y Villa Dalcar, durante el año 2003. El objetivo fue: conocer y comparar la composición algal, su relación con parámetros ambientales y registros bacteriológicos en ambos lagos. Se determinaron 275 taxa: 178 Bacillariophyceae , 60 Chlorophyceae , 21 Cyanophyceae , 13 Euglenophyceae , 2 Dinophyceae y 1 Chrysophyceae . Las especies y/o variedades fueron registradas por primera vez para el área de estudio, 53 son nuevas citas para la provincia de Córdoba y 8 para la Argentina. El lago con mayor número de especies propias fue el Villa Dalcar. El Parque Sarmiento en otoño, registró un gran número de clorofíceas propias de este lago. Se evidenciaron dos floraciones en el lago Villa Dalcar: estival de Aphanizomenon flos-aquae y primaveral de Peridinium pusillum . El índice de Jaccard evidenció la mayor similitud entre los sitios Este y Centro en otoño, para el lago Parque Sarmiento y Salida y Malón, en verano, para el lago Villa Dalcar. Según el Índice de Sorensen-Dice aplicado a ambos lagos y estaciones del año, la máxima similitud fue entre los sitios Salida del Villa Dalcar y Este del Parque Sarmiento, en invierno. En primavera y verano se registró un número elevado de bacterias coliformes en el sitio Puente Oeste del lago Parque Sarmiento , y en el sitio el Malón del lago Villa Dalcar, en verano.The present work was carried out in two urban lakes in Río Cuarto (Córdoba, Argentina: Parque Sarmiento and Villa Dalcar, during the year 2003. The objective was to know and to compare the algal composition and its relation with environmental parameters and bacteriological registries in both lakes. 275 taxa were determined: 178 Bacillariophyceae , 60 Chlorophyceae , 21 Cyanophyceae , 13 Euglenophyceae , 2 Dinophyceae and 1 Chrysophyceae. The species and/or varieties are registred for the irst time in the study area, 53 are

  20. Diversidad de musgos en ambientes degradados sujetos a restauración en el Parque Nacional Lago Puelo (Chubut, Argentina Moss diversity in degraded environments under restoring in the Lago Puelo National Park (Chubut, Argentina

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    ADRIANA E ROVERE

    2011-12-01

    Full Text Available La restauración ecológica es una disciplina que intenta recuperar atributos perdidos en un ecosistema (diversidad de especies, estructura y función. El objetivo de este trabajo fue evaluar la diversidad de musgos y sus formas de vida en tres ambientes con diferentes niveles de degradación y los sustratos en los que estos se desarrollan. El área de estudio corresponde a un sector que se está restaurando dentro de la Reserva Nacional Lago Puelo. En ella se encuentran tres ambientes distintos: (1 área remanente de bosque maduro de Nothofagus dombeyi, (2 bosque secundario de Austrocedrus chilensis, y (3 matorral dominado por especies exóticas. Se recorrió cada uno de los ambientes, registrando los sustratos con musgos, formas de vida y géneros. Los resultados evidencian una reducción de los sustratos disponibles y de las especies presentes conforme avanza el grado de alteración, desde el área de bosque maduro de N. dombeyi (9 sustratos: 17 géneros: 7 formas de vida, al sector de bosque secundario de A. chilensis (6 sustratos: 8 géneros: 5 formas de vida, siendo menor en el matorral dominado por especies exóticas (1 sustrato: 4 géneros: 3 formas de vida. Los musgos desempeñan funciones importantes en los ecosistemas, son fundamentales en el balance hídrico, pioneros en suelos inestables controlando la erosión y colonizando sitios alterados, sirven como hábitat y alimento para invertebrados, y también constituyen sitios propicios para la germinación de plantas vasculares. Si bien algunas especies leñosas ven afectada su germinación por la presencia de musgos, estos facilitan la germinación de otras especies arbóreas de los bosques templados. Los resultados podrían ser utilizados en restauración, ya sea recreando los sustratos ausentes o realizando traslado de sustratos con musgos, a fin de favorecer la recuperación de áreas boscosas degradadas considerando la biodiversidad original.Ecological restoration is a discipline

  1. Relationship between vitamin D levels and glycaemic control in Type 2 diabetes mellitus patients in Lagos, Nigeria

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    Anyanwu Anthony Chinedu

    2017-01-01

    Full Text Available Background: Studies have reported a relationship between Vitamin D deficiency and type 2 diabetes mellitus (T2DM. There is no information on the Vitamin D status or relationship between Vitamin D and glycaemia in Nigerian patients with T2DM. The objective of this study was to determine the relationship between serum Vitamin D levels and glycaemic control, as determined by glycated haemoglobin (HbA1c in adult patients with T2DM. Methods: This was a cross-sectional analytical study involving T2DM participants attending the Diabetes Clinic of the Lagos University Teaching Hospital. The study participants consisted of 114 T2DM and sixty healthy controls. Levels of serum Vitamin D, fasting glucose, insulin, HbA1c, calcium, albumin, phosphate, creatinine and alanine transaminase were determined. Insulin resistance and beta cell function were estimated with the homeostasis model assessment (HOMA-IR and HOMA-B, respectively. Statistical analysis was done using Statistical Package for Social Sciences, Version 20. Results: The mean age of the study participants was 52 ± 7.6 years for T2DM patients and 50 ± 8.4 years for controls. The female to male ratio in both T2DM and healthy controls was 3:2. The mean HbA1c was 7.3 ± 1.8%. Poor glycaemic control (HbA1c >6.5% was present in 67 (58.8% T2DM controls; forty-five (39.5% subjects had both low Vitamin D levels and poor glycaemic control. There was a significant inverse correlation between serum Vitamin D concentration and HbA1c levels in T2DM patients (rs= −0.185; P < 0.05 A non-significant inverse association was seen between serum Vitamin D level and HOMA-IR. Conclusion: This study shows an inverse association between serum levels of Vitamin D and glycaemic control, as determined by HbA1c. T2DM patients with poor glycaemic control may need to be assessed for serum Vitamin D levels and possibly treated for Vitamin D deficiency.

  2. U–Th and 10Be constraints on sediment recycling in proglacial settings, Lago Buenos Aires, Patagonia

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    A. Cogez

    2018-03-01

    Full Text Available The estimation of sediment transfer times remains a challenge to our understanding of sediment budgets and the relationships between erosion and climate. Uranium (U and thorium (Th isotope disequilibria offer a means of more robustly constraining sediment transfer times. Here, we present new uranium and thorium disequilibrium data for a series of nested moraines around Lago Buenos Aires in Argentine Patagonia. The glacial chronology for the area is constrained using in situ cosmogenic 10Be analysis of glacial outwash. Sediment transfer times within the periglacial domain were estimated by comparing the deposition ages of moraines to the theoretical age of sediment production, i.e., the comminution age inferred from U disequilibrium data and recoil loss factor estimates. Our data show first that the classical comminution age approach must include weathering processes accounted for by measuring Th disequilibrium. Second, our combined data suggest that the pre-deposition history of the moraine sediments is not negligible, as evidenced by the large disequilibrium of the youngest moraines despite the equilibrium of the corresponding glacial flour. Monte Carlo simulations suggest that weathering was more intense before the deposition of the moraines and that the transfer time of the fine sediments to the moraines was on the order of 100–200 kyr. Long transfer times could result from a combination of long sediment residence times in the proglacial lake (recurrence time of a glacial cycle and the remobilization of sediments from moraines deposited during previous glacial cycles. 10Be data suggest that some glacial cycles are absent from the preserved moraine record (seemingly every second cycle, supporting a model of reworking moraines and/or fluctuations in the extent of glacial advances. The chronological pattern is consistent with the U–Th disequilibrium data and the 100–200 kyr transfer time. This long transfer time raises the

  3. Lago Maggiore oligotrophication as seen from the long-term evolution of its phytoplankton taxonomic size structure

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    Giuseppe MORABITO

    2009-02-01

    Full Text Available Due to the rapid and common deterioration of aquatic ecosystems, scientists and environmental protection organizations acutely need means capable of producing quantitative estimates for structural deformations of natural communities. Recently, very common biomass size spectra ignore community taxonomic composition, i.e., one of the most important kinds of biological information. Therefore, another very old, but rare in planktonology, method – the traditional taxonomic size spectrum (TTSS – can be helpful. TTSS, a specific form of size-frequency distribution of taxonomic units, reveals repeating patterns of deep subalpine Lago Maggiore (Italy phytoplankton taxonomic structure. The general TTSS pattern was safeguarded during 22 annual cycles (1984-2005, when many principal environmental characteristics were changed considerably during the lake oligotrophication. At the same time, the fine structure deformations of this pattern helped us divide the total oligotrophication process into several stages characterized by notable changes of TTSS peaks' proportions. These peak-height alterations were caused by pronounced changes in the species list and overall taxonomic diversity of the lake phytoplankton. The average cell volume decline was found. It was significantly correlated with the total phosphorus descending trend. This cell volume decline was produced by the addition of numerous species into the medium-and-small size fractions. Typical patterns of the stable and transitory stages were differentiated, which could be valuable for environmental protection and diagnostic applications. The central peak height difference between the stable and the transitory periods was statistically significant. Oligotrophication process decomposition into several more homogenous groups of years was supported by quantitative estimators produced by hierarchical cluster analysis. The highest level of the similarity measure (Pearson r in pairs of annual TTSS was

  4. Maternal and neonatal factors associated with mode of delivery under a universal newborn hearing screening programme in Lagos, Nigeria

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    Solanke Olumuyiwa A

    2009-09-01

    Full Text Available Abstract Background Emerging evidence from a recent pilot universal newborn hearing screening (UNHS programme suggests that the burden of obstetric complications associated with mode of delivery is not limited to maternal and perinatal mortality but may also include outcomes that undermine optimal early childhood development of the surviving newborns. However, the potential pathways for this association have not been reported particularly in the context of a resource-poor setting. This study therefore set out to establish the pattern of delivery and the associated neonatal outcomes under a UNHS programme. Methods A cross-sectional study in which all consenting mothers who delivered in an inner-city tertiary maternity hospital in Lagos, Nigeria from May 2005 to December 2007 were enrolled during the UNHS programme. Socio-demographic, obstetric and neonatal factors independently associated with vaginal, elective and emergency caesarean deliveries were determined using multinomial logistic regression analyses. Results Of the 4615 mothers enrolled, 2584 (56.0% deliveries were vaginal, 1590 (34.4% emergency caesarean and 441 (9.6% elective caesarean section. Maternal age, parity, social class and all obstetric factors including lack of antenatal care, maternal HIV and multiple gestations were associated with increased risk of emergency caesarean delivery compared with vaginal delivery. Only parity, lack of antenatal care and prolonged/obstructed labour were associated with increased risk of emergency compared with elective caesarean delivery. Infants delivered by vaginal method or by emergency caesarean section were more likely to be associated with the risk of sensorineural hearing loss but less likely to be associated with hyperbilirubinaemia compared with infants delivered by elective caesarean section. Emergency caesarean delivery was also associated with male gender, low five-minute Apgar scores and admission into special care baby unit compared

  5. Holocene vegetational and coastal environmental changes from the Lago Crispim record in northeastern Pará State, eastern Amazonia.

    Science.gov (United States)

    Behling, H; Lima da Costa, M

    2001-04-01

    Vegetational and coastal environmental changes have been interpreted from a 600cm long and 764014C yr B.P. old sediment core from Lago Crispim located in the northeastern Pará State in northern Brazil. The radiocarbon dated sediment core was studied by multi-element geochemistry, pollen and charcoal analysis.Holocene Atlantic sea-level rise caused an elevation of local water table, which allowed the formation of organic deposits in a probably former inter-dune valley. Dense, diverse and tall Amazon rain forest, and some restinga (coastal vegetation) covered the study area at the beginning of the record at 764014C yr B.P. Mangrove vegetation developed along rivers close to the core site at that time. Subsequent decrease in less mangrove vegetation near the study site indicates a sea-level regression, beginning since around 700014C yr B.P. Lower sea-levels probably favoured the formation of a local Mauritia/Mauritiella palm swamp at 662014C yr B.P. Oscillations of higher and lower sea-level stands probably changed the size of the local palm swamp area several times between 6620 and 363014C yr B.P. Sea-level transgression at around 363014C yr B.P., caused marked coastal environmental changes: the development of mangroves near the site, the replacement of the local palm swamp by a Cyperaceae swamp, the substitution of the surrounding former Amazon rain forest and some restinga vegetation mainly by salt marshes. High amount carbonised particles suggest a strong human impact by burning on the coastal ecosystems during this late Holocene period.Highest concentrations of NaCl and also Ca, Mg and K in the upper sediment core indicate that the Atlantic was close during the late Holocene period. The core site, which is today 500m from the coastline and only 1-2m above modern sea-level, was apparently never reached by marine excursions during the Holocene.Less representation of mangrove since ca. 184014C yr B.P., may be related due to a slightly lower sea-level or to human

  6. Monitoreo ante inundaciones en comunidades de la cuenca baja del Rio Ostúa y Lago Guija, Guatemala

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    Carla Gordillo

    2017-03-01

    Full Text Available El proyecto de investigación Pridca BC 96: Sistema de Monitoreo ante inundaciones en comunidades de la cuenca baja del Rio Ostúa y Lago de Guija, se desarrolló de julio 2014 a diciembre 2015. Las actividades ejecutadas consistieron en la caracterización de la cuenca, elaboración de mapa de susceptibilidad municipal, campaña de sensibilización y taller de selección de comunidades. Se generó un mapa de amenaza y riesgo ante inundación en toda la cuenca y se logró el acercamiento con las comunidades a través de una herramienta social. Se realizó un taller con información recopilada, donde se seleccionaron dos comunidades a beneficiar y se realizó una campaña de sensibilización. Se capacitó a los miembros de la Asociación de Monitoreo y Protección Ambiental Regional, socios locales estratégicos. Las campañas de capacitación desarrolladas para Los Llanitos y La Unión-La Esperanza, fueron sobre la temática de gestión integrada de riesgo ante inundaciones. Se elaboró el mapa de amenazas de las dos comunidades y se realizó un estudio de conocimiento actitudes y prácticas. En colaboración de Conred se capacitaron y se elaboraron los planes de emergencia y SAT, se ha iniciado la acreditación de las mismas como Coordinadoras Locales. Se adquirió equipos de monitoreo de alerta que fueron instalados en la parte alta y media de la cuenca: Estación meteorológica, pluviómetros, sensores de rio y los equipos de comunicación. Se capacitaron en el uso de los mismos y se realizó simulación de emergencia a inundaciones con los pobladores de las dos comunidades beneficiadas.

  7. Radiation therapy: A major factor in the five-year survival analysis of women with breast cancer in Lagos, Nigeria

    International Nuclear Information System (INIS)

    Makanjuola, Samira B.L.; Popoola, Abiodun O.; Oludara, Mobolaji A.

    2014-01-01

    Purpose: This retrospective study was carried out to examine five-year survival from breast cancer cases diagnosed between 2005 and May 2008 in Nigerian women. Material and methods: Two hundred and twenty-four patients were entered into the study. Five-year survival was evaluated using proportional hazard model proposed by Cox to assess variables such as age of diagnosis, menopausal status, and stage of the disease in the two treatment groups: surgery/chemotherapy or surgery/chemotherapy/radiotherapy. Results: Findings revealed that the different staging of disease and treatment are independent predictors of disease outcome whereas age of diagnosis and menopausal status although associated with low hazards, are not significant. TNM Stage I (Hazard Ratio = 0.153, 95% CI 0.45–0.51, P = 0.003), II (Hazard Ratio = 0.245, 95% CI 0.12–0.46, P = 0.0001), and III (Hazard Ratio = 0.449, 95% CI 0.31–0.46, P = 0.0001) showed significantly greater survival rates compared to TNM Stage IV for patients receiving surgery/chemotherapy. Similarly, for patients receiving surgery/chemotherapy/radiotherapy TNM Stage II (Hazard Ratio = 0.110, 95% CI 0.02–0.46, P = 0.003) and III (Hazard Ratio = 0.238, 95% CI 0.07–0.73, P = 0.012) also showed significantly greater survival rates compared to TNM Stage IV. Treatment had a significant impact on survival independent of stage, age, and menopausal status. Patients receiving surgery/chemotherapy/radiotherapy had a significant increase in survival outcome for TNM Stage (II, P = 0.045; III, P = 0.0001); age groups (40–49, P = 0.021; 50–59, P = 0.016; 60–69, P = 0.017; >70, P = 0.025); and menopausal status (premenopausal, P = 0.049; postmenopausal, P = 0.0001) compared to those receiving surgery/chemotherapy. Conclusion: The five-year breast cancer survival rate in Lagos, Nigeria 24.1% (54/224) is relatively poor compared to most countries in the world and needs to be improved. Poor survival rates are mainly attributed to late

  8. Assessment of occupational exposure to polycyclic aromatic hydrocarbons via involuntary ingestion of soil from contaminated soils in Lagos, Nigeria.

    Science.gov (United States)

    Adetunde, Oluwatoyin T; Mills, Graham A; Olayinka, Kehinde O; Alo, Babajide I

    2014-01-01

    Soils from 12 sites in Lagos area, Nigeria impacted by anthropogenic activities were extracted by ultrasonication and analysed for the concentration of 16 priority polycyclic aromatic hydrocarbons (PAHs) by gas chromatograph-mass spectrometer (GC-MS). The concentration of the sum of PAHs ranged from 0.2 to 254 μg/g at these sites. The sum benzo[a]pyrene-equivalent dose (BaPeq) at the sites ranged from 0.0 (K, forest soil) to 16.7 μg/g (C, the lubricating oil depot soil). Mean daily intake (MDI) for the composite soils samples when compared that of food revealed that some of the individual PAH in samples from sites A (Dump site), C (Depot and loading point for used for black oil), F (Dump site), G(petroleum depot), H (Roadside) and L (Car park) exceeded the recommended the recommended MDI threshold for food, indicating some risk associated with activities on these sites based on this ingestion estimate exceeded value. 8.2 × 10(-6), 7.1 × 10(-7), 1.2 × 10(-4), 4.9 × 10(-7), 7.3 × 10(-7), 1.4 × 10(-5), 7.9 × 10(-5), 4.6 × 10(-6), 3.4 × 10(-7), 2.4 × 10(-7), 2.2 × 10(-7) and 1.1 × 10(-4) estimated theoretical cancer risk (ER) for an adult with a body weight of 70 kg working on sites were composite soil samples A, B, C, D, E, F, G, H, I, J, K and L respectively were sampled. The ER from occupational exposure to surface soil based on oral ingestion were all higher than the target risk of 1 × 10(-6) for normal exposure but were all within the 1 × 10(-4) for extreme exposure for most of the sites except for site C and L. The differences in concentration and risk were related to the different activities (e.g., handling of petroleum products, open burning, bush burning) undertaken at these locations. However, it should be noted here that the resultant risk could be overestimated, since these calculations were based on an exhaustive extraction technique which may be different from uptake by the human guts (bioavailability study).

  9. Oligotrophic patterns in southern Chilean lakes: the relevance of nutrients and mixing depth Patrones oligotróficos en lagos del sur de Chile: relevancia de los nutrientes y de la profundidad de mezcla

    Directory of Open Access Journals (Sweden)

    DORIS SOTO

    2002-06-01

    Full Text Available Southern Chilean monomictic, temperate lakes are generally oligotrophic with high water transparency, low productivity and some apparent resistance to disturbances such as phosphorus additions. This paper attempts to explain low chlorophyll-a values using descriptive and experimental approaches. Three different scales are used, (a a micro scale both in space and time, with experimental manipulations of N, P and total light in 24 enclosures in lake Llanquihue, (b a longer time scale analysing 18 months of data in several sites within lake Llanquihue grouped as salmon farming sites, town bays and control sites, and (c a broader time scale (9 years by monitoring lakes Puyehue, Rupanco and Llanquihue, all in the Araucanian lake region and Yelcho lake in the north Patagonian region. In the Llanquihue in-lake sampling, total phosphorus values varied between 1 and 12 mug L-1 between sites, showing marginal site effects, P = 0.09 (salmon sites had greater values, however, chlorophyll a (Chl-a concentrations were generally low (Los lagos monomicticos templados del sur de Chile son generalmente oligotróficos de gran transparencia, baja productividad y aparente resistencia a perturbaciones tales como adiciones de fósforo. Este trabajo intenta explicar los bajos valores de clorofila de acuerdo a aproximaciones descriptivas y experimentales. Se utilizan aquí tres escalas de aproximación; (a una microescala en espacio y tiempo con manipulaciones experimentales de nitrógeno (N, fósforo (P y luz en 24 limnocorrales ubicados en una bahía del lago Llanquihue, (b una escala mayor analizando 18 meses de muestreo en 10 sitios del lago Llanquihue agrupados como sitios de cultivo de salmones, bahías de ciudades y sitios de control, (c una escala aún mayor en tiempo y espacio monitoreando semestralmente por 9 años los lagos Puyehue, Rupanco, Llanquihue en la región de los Lagos Araucanos y el lago Yelcho en la región nor- patagónica. En el muestreo intra

  10. Crecimiento, Abundancia Y Biomasa De Poecilia reticulata En El Lago Urbano Del Parque Tezozomoc De La Ciudad De México

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    G. Elías-Fernández

    2006-01-01

    Full Text Available Los lagos urbanos tienen importancia estética, recreativa, cultural y biológica por albergar organismos generalmente alóctonos, como aves, reptiles, insectos y peces, en particular poecilidos, los cuales son muy tolerantes y se reproducen con facilidad. Por lo anterior, el objetivo de este trabajo fue: determinar la variación en la abundancia y biomasa de Poecilia reticulata en el lago del parque Tezozomoc, así como obtener la ecuación de crecimiento. Se realizaron muestreos mensuales de julio del año 2000 a junio del 2001. Se establecieron tres estaciones donde se registraron las siguientes variables físicas y químicas; transparencia, alcalinidad, dureza, pH, conductividad, temperatura y turbiedad por métodos convencionales. Los peces se capturaron con una red de cuchara de marco rectangular de 100 x 50 cm (área barrida de 0.5 m2, con luz de malla de 0.5 cm. Los organismos se fijaron con formalina al 10 %. Se registraron las siguientes variables morfométricas de los organismos; peso (gr y longitud patrón (mm. Se calculó la abundancia y biomasa, así como la ecuación de crecimiento de acuerdo al modelo de Von Bertalanffy. Se encontró que el agua del sistema es templada, turbia, alcalina, dura y somera. La mayor abundancia (6,148 organismos y biomasa (677.28 g se presentó en la estación I, caracterizada por la mayor presencia de visitantes al lago que arroja desperdicios alimenticios al sistema. Los meses con mayor abundancia fueron julio (1,483 org y agosto (1,252 org y los de mayor biomasa agosto (145.12 gr y marzo (138.63 gr. La longitud máxima obtenida de 61.55 mm y la tasa de crecimiento de 0.2987 son valores similares a los obtenidos en sistemas naturales.

  11. Perception of orthodox health care centers among pregnant women attending traditional birth attendants clinics in two local government areas of Lagos State

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    A Okewole

    2013-01-01

    Full Text Available Background and Objective: Adequate antenatal care and skilled obstetric assistance during delivery are important strategies that significantly reduce maternal mortality and morbidity. This study aimed to assess the awareness, attitudes and perception of orthodox health care centres among pregnant women patronizing traditional birth attendants in Mushin and Lagos Island local government areas of Lagos state. Methods: The survey was a community-based descriptive cross-sectional survey that employed interviews to collect data from 300 antenatal care attendees of seven traditional birth attendants′ clinics in Lagos Island and Mushin local government areas between December 2010 and January 2011 using a structured questionnaire. Results: The women ranged in age from 17-43 years with a mean age of 27.6 ± 4.6 SD and most of them were primigravidas (41.5%, married (88% and traders (44.1%. Most of the women (61% and their husbands (56.7% had completed their secondary education. The majority (81.7% of respondents were aware of a modern health facility around where they lived, the most commonly known being private hospitals (43.7%. Most of them (67.3% were aware of antenatal care services provided at these facilities but only 31.3% had ever made use of the antenatal services. Most of the women were not willing to deliver in hospitals because they didn′t like the attitude of the health workers (37.3% and because it was far from their houses (12.7%; the majority (75% preferring to deliver with traditional birth attendants because they give good service. However, almost all (98.5% of the women that had children took them to the orthodox health facilities for immunization, primarily the primary health care centers (55.7%. Conclusion: Traditional birth attendants are patronized by a wide array of women who are aware of orthodox health facilities but have a negative attitude towards their services. Improvements in communication and interpersonal skills of

  12. Pattern and management of sports injuries presented by Lagos state athletes at the 16th National Sports Festival (KADA games 2009 in Nigeria

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    Owoeye Oluwatoyosi BA

    2010-01-01

    Full Text Available Abstract Background There is a dearth of information on the epidemiology of sports injuries in Nigeria. The study was aimed at documenting sports injuries sustained by Lagos state athletes during the 16th National Sports Festival (KADA Games 2009. It was also aimed at providing information on treatments offered to injured athletes. Methods The study was carried out at Amadu Bello Stadium Complex, sporting arena of the Murtala Square and the team Lagos mini clinic. Participants were accredited Lagos state athletes who at one point in time during the games required treatment from any of the members of the medical team. Demographic data of athletes, type of injuries, body parts injured and treatment modalities used were documented and analysed using descriptive statistics. Results Within the period of the games, a total of 140 sports injuries were documented from 132 athletes with an approximate male to female ratio of 2:1 and age ranging from 15-38 years. Most of the injuries reported by the athletes were "minor" injuries. Muscle strain was the most common type of injury (31.4% followed by ligament sprains (22.9%. The lower extremities were the most injured body region accounting for 50% of all injuries. Over 60% of injuries presented by the athletes were from basketball, cricket, hockey, rugby and baseball. Cryotherapy was the most frequently used treatment modality, followed by bandaging and massage with anti-inflammatory gels. Conclusion Establishing injury prevention programmes directed at the lower extremities may help reduce the risk of injuries to the lower extremities. Since cryotherapy was the most used treatment modality, it is suggested that it should be made abundantly available to the medical team preferably in forms of portable cold sprays for easy transportation and application during the games. It is also important that physiotherapists form the core of the medical team since they are trained to apply most of these treatment

  13. Variaciones temporales de parámetros físicos, químicos y biológicos de un lago de altura: el caso del lago Chungará Temporal variations of physical, chemical and biological parameters of a high altitude lake: the case of Chungara lake

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    CRISTINA DORADOR

    2003-03-01

    Full Text Available RESUMEN El lago Chungará, es el más austral y de mayor altura de los lagos altoandinos, está ubicado a 4.520 m de altitud en el altiplano chileno (18º14' S, 69º09' O; es un lago polimíctico-frío, con origen tectónico- volcánico y 34 m de profundidad máxima. Presenta variaciones reducidas de temperatura entre profundidades y estaciones del año (4 a 11 ºC, el promedio de temperatura anual se ha incrementado en 1,2 ºC entre los períodos 1986-1987 y 1998-1999. Entre los mismos períodos se observó una disminución significativa en el volumen del lago (_6,58 % y consecuentemente en la profundidad máxima. Conjuntamente la salinidad aumentó significativamente con valores máximos de 1.464 µmhos y 2.650 µmhos para cada período. Estos cambios pueden ser las causas de la modificación en composición y abundancia del fitoplancton, asociadas, además, a la disminución significativa de la clorofila a (P The Chungará lake (18º14' S, 69º09' W, the most austral and highest among the intertropical andean lakes, is located at 4,520 m of altitude. It is a polymictic system of tectonic-volcanic origin with a maximum depth of 34 m. It has a narrow temperature range in depth and seasonally (4-11 ºC, and which mean annual values show an increment in 1.2 ºC between 1986-1987 and 1998-1999 periods. The system total volume has reduced significatively (-6.58 % during both periods of study and consequently in the maximum depth. Salinity has increased significatively, presenting maximum values of 1,464 µmhos and 2,650 µmhos, respectively. These changes would be modifying the phytoplankton composition and abundance and are also probably associated to the significative chlorophyll a decrease between these two periods (P < 0.0054.

  14. Sensitivity of winter phytoplankton communities from Andean lakes to artificial ultraviolet-B radiation Sensibilidad de comunidades fitoplanctónicas invernales de lagos andinos a la radiación ultravioleta-B artificial

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    E. WALTER HELBLING

    2001-06-01

    Full Text Available During July of 1999 sampling was carried out in five Andean lakes to determine the sensitivity of winter phytoplankton communities to ultraviolet-B radiation (UV-B, 280-320 nm. The studied lakes, Moreno, El Trébol, Nahuel Huapi, Gutiérrez, and Morenito, located in the Patagonia region (41° S, 71° W, 800 m of altitude, had attenuation coefficients for UV-B that ranged from 0.36 m-1 (Lake Moreno to 2.8 m-1 (Lake Morenito. The samples were inoculated with labeled carbon (NaH14CO3 and incubated in an illuminated chamber (UV-B = 0.35 W m-2, UV-A [320-400 nm] = 1.1 W m-2, and PAR [400-700 nm] = 10.8 W m-2 at 10 °C. The phytoplankton cells were exposed to UV radiation (280-400 nm + PAR (quartz tubes, and to UV-A + PAR (quartz tubes covered with Mylar-D. The total duration of the experiments was 4 h and two samples were taken from each treatment every hour. In lakes Moreno, El Trébol, Nahuel Huapi and Gutiérrez, the photosynthetic inhibition increased linearly with UV-B doses, while in Lake Morenito just a slight relationship was observed. After receiving a dose of 1.25 kJ m-2 (UV-B, phytoplankton from Lake Morenito had the highest cumulative photosynthetic inhibition (44 %, whereas in Lakes Moreno, El Trébol, Nahuel Huapi and Gutiérrez the inhibition was of 22, 11, 5, and 1 %, respectively. However, at the end of incubation period and after receiving doses of 5 kJ m-2, the most inhibited phytoplankton cells were from Lake Moreno (70 % and the most resistant (27 % was that from Lake Gutiérrez. The kinetics of inhibition was different in each lake, and transparent lakes, with higher proportion of large cells, had higher inhibition rates. The results suggest that an increase in UV-B radiation (e.g., produced by a decrease in stratospheric ozone would have a greater impact on microplankton from clear lakes, while pico- and nanoplankton from less transparent lakes will be less affectedDurante julio de 1999 se realizaron muestreos en cinco lagos

  15. Knowledge, non-use, use and source of information on contraceptive methods among women in various stages of reproductive age in rural Lagos, Southwest Nigeria

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    Afolabi BM

    2015-05-01

    Full Text Available Bamgboye M Afolabi,1 Emmanuel NU Ezedinachi,2 Iwara Arikpo,2 Abiodun Ogunwale,3 Damilola Fatimah Ganiyu,1 Rashidat A Abu,1 Adewunmi A Ajibade1 1Health, Environment and Development Foundation, Yaba, Lagos, Nigeria; 2Institute of Tropical Disease and Research, University of Calabar, Calabar, Nigeria; 3Project Hope, Washington, DC, USA Background: Contraceptives are advocated to be used against unwanted pregnancy and sexually transmitted diseases as unsafe abortion contributes to high maternal mortality in Nigeria while unwanted pregnancies have terminated the educational development of many females. Objective: This questionnaire-based survey aimed to describe the knowledge, nonuse, and use of various contraceptive methods among women in different child-bearing age groups in rural Lagos, Nigeria. Materials and methods: Between 2012 and 2013, 816 females in rural communities within Lagos State were surveyed for their knowledge, source of information, and use of contraceptives. They were grouped into early, mid, and late reproductive age. Statistical analysis of data harvested from respondents was carried out using STATA 13 software. Results: In all, 816 females in different stages of reproductive age were involved in the study, among whom 19% were single, 78% married, 3% divorced, and 0.5% widowed. About 6% had no formal education, while the majority (81% were of the Yoruba ethnic group. Married respondents were approximately thrice more likely to know of contraceptives than single respondents (χ2=29.9, P=0.000, odds ratio =2.9, 95% confidence interval =1.9, 4.2. Condom use was the most widely known and used method of contraceptive regardless of marital status and reproductive age status. Information about contraceptives was mainly from health facilities among married and divorced women and from school or educational institution among singles. Overall prevalence of contraceptive use was 51.9%. Nonuse of contraceptives was 43% among married women

  16. Niveles de concentración de mercurio total en tilapia en los sitios de pesca de las comunidades pesqueras del Lago Xolotlán

    OpenAIRE

    Mario Alberto Gutiérrez Gutiérrez

    2001-01-01

    El mercurio depositado en el laguna Xolotlán se bioacumula en los peces haciéndose disponible para los humanos que se alimentan de ellos. Se determinaron las concentraciones de mercurio total (HgT) en 29 muestras de músculo axial de peces tilapia (Oreochromis sp) de talla comercial, en nueve (9) sitios de pesca del lago Xolotlán. El promedio de concentración de mercurio total detectado con EAA Varian-A50 fue de 0.0262 gg/g, con valores mínimos menores que el límite de detección pg/gyun máximo...

  17. Reprodução de Cichla kelberi Kullander and Ferreira, 2006 introduzidos em um lago artificial no Sudeste do Brasil

    OpenAIRE

    Gomiero, LM.; Villares Junior, GA.; Naous, F.

    2009-01-01

    O objetivo do estudo foi caracterizar a reprodução de Cichla kelberi em um lago artificial no município de Leme, Estado de São Paulo, Brasil. A época reprodutiva ocorreu na primavera e verão. O L50 e o L100 desta espécie foram de 192 e 235 mm (L50) para machos e fêmeas, respectivamente e 290 mm (L100) para ambos os sexos. A desova foi do tipo parcelado. O tamanho dos ovócitos maduros foi de 428,4 µm, atingindo o máximo em 2.203,2 µm. A média da fecundidade foi de 12.129,2 ovócitos com média d...

  18. Identidades ambientales, un caso comparativo entre el Trapecio amazónico y el Archipiélago de San Andrés

    Directory of Open Access Journals (Sweden)

    Pablo De La Cruz

    2014-01-01

    Full Text Available A partir de la definición de identidad ambiental, el artículo compara los procesos de transformación identitaria que han tenido lugar en el Trapecio amazónico colombiano y en el Archipiélago de San Andrés, por cuanto son dos casos de redefinición histórica de la etnicidad con referencia al medio geográfico, al encuentro con la colombianidad, a la agudización del discurso y a las tensiones que los capitales y los agentes institucionales generan en torno a lo tradicional. Se analiza el creciente turismo, la influencia de las agencias de cooperación y sus efectos en el desplazamiento de lo sagrado hacia una “cultura teatral”.

  19. A multi-proxy lake core record from Lago Lungo, Rieti Basin, Lazio, Italy and its relation to human activities in the catchment during the last century

    Science.gov (United States)

    Noble, Paula; Tunno, Irene; Mensing, Scott; Piovesan, Gianluca

    2016-04-01

    The lakes of the Rieti Basin have experienced extensive human modification dating back to pre-Roman times, yet lake archives indicate that the most profound changes to the aquatic ecosystem have occurred during the last century. Analysis of the upper ˜120 cm segment of a sediment core from Lago Lungo, dating back to ˜1830 CE, show changes in water quality and hydrologic inflow largely attributed to 20th century reclamation and land use activities. Lago Lungo is a shallow, small, eutrophic, hard water lake situated in an intermontaine alluvial plain ˜90 km NE of Rome. It is one of several remnant lakes in a poorly drained wetland area fed by numerous springs. Reclamation activities over the last century have substantially altered the drainage network affecting water delivery to the lakes and their connectivity. There are 3 interesting signals in the core. First, small Stephanodiscus species, associated with hypereutrophic conditions, appear after 1950, peak ˜1990, and may be attributed to increased use of chemical fertilizers and intensification of local agriculture. Elemental proxies from scanning XRF data (abundances of Ti, Si/Ti, and Ca) are consistent with increased eutrophication starting ˜1950. A decline in Stephanodicsus after 1990 reflects some improvement to the water quality following the lake's incorporation into a nature preserve and creation of a narrow vegetation buffer. Intermittent water quality measurements from 1982 onward corroborate the changes in trophic status interpreted from the core record. Second, a large change in the core stratigraphy, elemental geochemistry, and diatom composition occurs ˜1940 and is associated with several major reclamation efforts, including the rerouting of the Santa Susanna channel, which redirected large volumes of artesian inflows away from the lakes and estuarine system. Upstream, dams on the Turano and Salto rivers were also constructed, further affecting hydrological inflows into the basin. From ˜1900

  20. Beyond Data Regulation: Finding a Solution to the Persistent Problem of Marine Debris and Sea Surface Temperature Measurement Along the Coastline of Lagos, Nigeria

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    O A Ediang

    2013-03-01

    Full Text Available In this paper we discuss environmental changes along the coastal line of Nigeria, especially in the region around Lagos, based on provisional multi-disciplinary analyses of meteorological and maritime observations. This study has revealed that recent environmental change in the Nigerian coastal region has been much more apparent than that of a few years back (1989-2007. Various kinds of ocean debris, transported mainly by coastal wind, are severely affecting the marine and coastal environment. Because the current ocean monitoring system has been found to be troubled by ocean debris, establishing a new system to obtain reliable observational data to monitor and preserve the environment of the coastal region is urgent.

  1. Registros nuevos de murciélagos para el estado de Hidalgo, México New records of bats for the state of Hidalgo, Mexico

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    Melany Aguilar-López

    2012-12-01

    Full Text Available Este trabajo registra por primera vez la presencia de los murciélagos Eptesicus furinalis, Glossophaga morenoi, Myotis auriculus y Platyrrhinus helleri para el estado de Hidalgo, México. Los ejemplares se obtuvieron durante los muestreos realizados entre agosto de 2008 y mayo de 2010. De cada ejemplar se proporcionan las medidas externas y craneales, la condición reproductora, así como el tipo de vegetación donde fueron encontrados.We register for the first time the presence of the bats Eptesicus furinalis, Glossophaga morenoi, Myotis auriculus and Platyrrhinus helleri for the state of Hidalgo, Mexico. The bats were obtained between August 2008 and May 2010. We provide for each bat external and cranial measures, reproductive status, as well as the type of vegetation where they were found.

  2. The use of antioxidative stress enzymes, lipid peroxidation, and red blood cell abnormalities as biomarkers of stress in Periphthalmus papilio of the polluted coastal Lagos lagoon.

    Science.gov (United States)

    Nnamdi, Amaeze H; Olumide, Adebesin A; Adeladun, Adepegba E; Oyenike, Kolapo; Rosemary, Egonmwan I

    2015-03-01

    We assessed the mudskipper, Periphthalmus papilio inhabiting the coast line of the Lagos lagoon, Gulf of Guinea, to determine suitable biomarkers of stress due to its current status as a polluted water body. The gill and liver samples showed evidence of some activities of antioxidative stress enzymes including catalase, superoxide dismutase, glutathione-s-transferase, reduced glutahthione, as well as some detectable levels of lipid peroxidation product. The stress status of the fishes was also elucidated by nuclear abnormalities especially micronucleus formation and the presence of numerous vacuolated red blood cells. Given the current need for more sensitive bioindicators in monitoring pollution in this lagoon, we hereby present these inherent responses in P. papilio as a suitable candidate for incorporation into the current repertoire for ecotoxicological investigations in polluted water bodies of the Gulf of Guinea coastline.

  3. Espacios y fisonomías de lo cotidiano en el Archipiélago de Chiloé (Chile, s. XIX.

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    Marco Antonio León

    2015-06-01

    Full Text Available A través del estudio de tres aspectos de la vida cotidiana en el archipiélago de Chiloé durante el siglo XIX, relativos a la forma y características de sus ciudades, viviendas y población, se exponen los condicionamientos que la misma geografía de la zona ha impreso en las formas de vida. Los relatos de exploradores y viajeros, no sólo corroborarían dicha impresión, sino además constituirían la principal fuente para adentrarse en el estudio de una identidad, si bien construida externamente a los isleños, igualmente reiterada y refrendada discursivamente con el paso de los años, haciéndose más evidentes los factores de permanencia antes que los de cambio en este particular escenario geográfico y humano.

  4. Evaluation and economics aspects of the lying of rare earth and iron-alloys in the Seis Lagos Carbonatite Complex-Amazonas-Brazil

    International Nuclear Information System (INIS)

    Wetterle Bonow, C. de; Issler, R.S.

    1980-01-01

    New data on rare earth mineralization and iron-alloys as well as other rare elements in the Seis Lagos Carbonatite Complex are described. Drilling and field work data have permited to define in surface, subsidence zones (subsurface collapses), in the interval of 14.65 to 73.10 meters depth a carbonaceous clay sequence, sapropelic, neogenic, highly enriched in Re, Nb, Th, V, Zn and Be as well as Sc, Y, Ga, Co and Sn as by-products were detected. Sedimentogenic aspects of the enrichment of detect elements, the scintillometric survey, the reserve calculation, the detected elements, the by-products and the complementary study for the deposit are discussed and finaly a value of US$ 6.7 x 10 9 is estimated for the detect deposit. (Author) [pt

  5. DESEMPEÑO GERENCIAL DE LAS ALCALDÍAS DE LA COSTA ORIENTAL DEL LAGO DE MARACAIBO ENFOCADO EN LAS ORGANIZACIONES INTELIGENTES

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    Niria Meli Quintero de Faría

    2012-07-01

    Full Text Available La presente investigación tuvo como objetivo analizar el desempeño gerencial de las alcaldías de la Costa Oriental del Lago, enfocándose en las organizaciones inteligentes.Metodológicamente el estudio fue de tipo descriptivo según (Hernández, Fernández y Baptista, 2006, porque se orientó a recolectar y medir información relacionada con el estudio de las personas u objetos, es de campo porque los datos se recogieron directamente de la realidad. El modelo desarrollado está referido a las Alcaldías de Cabimas, Santa Rita, Simón Bolívar, Miranda, Lagunillas, Valmore Rodríguez y Baralt. A su vez, estuvo enmarcado en la acción gerencial apoyado en las disciplinas de (Senge, 2005.

  6. Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará

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    AG Affonso

    Full Text Available Assurance of water quality for human consumption is essential for public health policies. In the Amazon floodplain, the seasonal water level variation causes periodic flooding of marginal areas that are usually used for settlements, agriculture and livestock. Therefore, the exchange of materials between the terrestrial and aquatic ecosystem affects the proportion of suspended and dissolved components in water and its physical-chemical characteristics, and consequently the quality of the water used by local people. Following this approach, the aim of this study is to evaluate changes in water quality in Lago Grande de Curuaí floodplain, Óbidos, Pará in response to the flood pulse, during one hydrological year from 2003 to 2004, based on water use classes (according to National Water Agency 357/2005 resolution using chlorophyll-a and dissolved oxygen concentration as parameters and the eutrophication index. Ordinary kriging was applied to interpolate chlorophyll-a and dissolved oxygen and to predict values at non sampled locations. Each location was then classified according to water use acceptable parameters and to Carlson Trophic State Index modified by Toledo to map lake water classes and trophic status. The result showed that Lago Grande de Curuaí floodplain is a supereutrophic system, with levels of dissolved oxygen and chlorophyll-a not suitable for human supply during the receding water phase. These areas are located near the riverine communities, which can cause health problems due to the presence of potentially toxic algae. Therefore, monitoring water quality in Amazon lakes is essential to ensure the availability has appropriate quality for human and animal supplies.

  7. LAGOS-NE: a multi-scaled geospatial and temporal database of lake ecological context and water quality for thousands of US lakes

    Science.gov (United States)

    Soranno, Patricia A.; Bacon, Linda C.; Beauchene, Michael; Bednar, Karen E.; Bissell, Edward G.; Boudreau, Claire K.; Boyer, Marvin G.; Bremigan, Mary T.; Carpenter, Stephen R.; Carr, Jamie W.; Cheruvelil, Kendra S.; Christel, Samuel T.; Claucherty, Matt; Collins, Sarah M.; Conroy, Joseph D.; Downing, John A.; Dukett, Jed; Fergus, C. Emi; Filstrup, Christopher T.; Funk, Clara; Gonzalez, Maria J.; Green, Linda T.; Gries, Corinna; Halfman, John D.; Hamilton, Stephen K.; Hanson, Paul C.; Henry, Emily N.; Herron, Elizabeth M.; Hockings, Celeste; Jackson, James R.; Jacobson-Hedin, Kari; Janus, Lorraine L.; Jones, William W.; Jones, John R.; Keson, Caroline M.; King, Katelyn B.S.; Kishbaugh, Scott A.; Lapierre, Jean-Francois; Lathrop, Barbara; Latimore, Jo A.; Lee, Yuehlin; Lottig, Noah R.; Lynch, Jason A.; Matthews, Leslie J.; McDowell, William H.; Moore, Karen E.B.; Neff, Brian; Nelson, Sarah J.; Oliver, Samantha K.; Pace, Michael L.; Pierson, Donald C.; Poisson, Autumn C.; Pollard, Amina I.; Post, David M.; Reyes, Paul O.; Rosenberry, Donald; Roy, Karen M.; Rudstam, Lars G.; Sarnelle, Orlando; Schuldt, Nancy J.; Scott, Caren E.; Skaff, Nicholas K.; Smith, Nicole J.; Spinelli, Nick R.; Stachelek, Joseph J.; Stanley, Emily H.; Stoddard, John L.; Stopyak, Scott B.; Stow, Craig A.; Tallant, Jason M.; Tan, Pang-Ning; Thorpe, Anthony P.; Vanni, Michael J.; Wagner, Tyler; Watkins, Gretchen; Weathers, Kathleen C.; Webster, Katherine E.; White, Jeffrey D.; Wilmes, Marcy K.; Yuan, Shuai

    2017-01-01

    Understanding the factors that affect water quality and the ecological services provided by freshwater ecosystems is an urgent global environmental issue. Predicting how water quality will respond to global changes not only requires water quality data, but also information about the ecological context of individual water bodies across broad spatial extents. Because lake water quality is usually sampled in limited geographic regions, often for limited time periods, assessing the environmental controls of water quality requires compilation of many data sets across broad regions and across time into an integrated database. LAGOS-NE accomplishes this goal for lakes in the northeastern-most 17 US states.LAGOS-NE contains data for 51 101 lakes and reservoirs larger than 4 ha in 17 lake-rich US states. The database includes 3 data modules for: lake location and physical characteristics for all lakes; ecological context (i.e., the land use, geologic, climatic, and hydrologic setting of lakes) for all lakes; and in situ measurements of lake water quality for a subset of the lakes from the past 3 decades for approximately 2600–12 000 lakes depending on the variable. The database contains approximately 150 000 measures of total phosphorus, 200 000 measures of chlorophyll, and 900 000 measures of Secchi depth. The water quality data were compiled from 87 lake water quality data sets from federal, state, tribal, and non-profit agencies, university researchers, and citizen scientists. This database is one of the largest and most comprehensive databases of its type because it includes both in situ measurements and ecological context data. Because ecological context can be used to study a variety of other questions about lakes, streams, and wetlands, this database can also be used as the foundation for other studies of freshwaters at broad spatial and ecological scales.

  8. LAGOS-NE: a multi-scaled geospatial and temporal database of lake ecological context and water quality for thousands of US lakes.

    Science.gov (United States)

    Soranno, Patricia A; Bacon, Linda C; Beauchene, Michael; Bednar, Karen E; Bissell, Edward G; Boudreau, Claire K; Boyer, Marvin G; Bremigan, Mary T; Carpenter, Stephen R; Carr, Jamie W; Cheruvelil, Kendra S; Christel, Samuel T; Claucherty, Matt; Collins, Sarah M; Conroy, Joseph D; Downing, John A; Dukett, Jed; Fergus, C Emi; Filstrup, Christopher T; Funk, Clara; Gonzalez, Maria J; Green, Linda T; Gries, Corinna; Halfman, John D; Hamilton, Stephen K; Hanson, Paul C; Henry, Emily N; Herron, Elizabeth M; Hockings, Celeste; Jackson, James R; Jacobson-Hedin, Kari; Janus, Lorraine L; Jones, William W; Jones, John R; Keson, Caroline M; King, Katelyn B S; Kishbaugh, Scott A; Lapierre, Jean-Francois; Lathrop, Barbara; Latimore, Jo A; Lee, Yuehlin; Lottig, Noah R; Lynch, Jason A; Matthews, Leslie J; McDowell, William H; Moore, Karen E B; Neff, Brian P; Nelson, Sarah J; Oliver, Samantha K; Pace, Michael L; Pierson, Donald C; Poisson, Autumn C; Pollard, Amina I; Post, David M; Reyes, Paul O; Rosenberry, Donald O; Roy, Karen M; Rudstam, Lars G; Sarnelle, Orlando; Schuldt, Nancy J; Scott, Caren E; Skaff, Nicholas K; Smith, Nicole J; Spinelli, Nick R; Stachelek, Joseph J; Stanley, Emily H; Stoddard, John L; Stopyak, Scott B; Stow, Craig A; Tallant, Jason M; Tan, Pang-Ning; Thorpe, Anthony P; Vanni, Michael J; Wagner, Tyler; Watkins, Gretchen; Weathers, Kathleen C; Webster, Katherine E; White, Jeffrey D; Wilmes, Marcy K; Yuan, Shuai

    2017-12-01

    Understanding the factors that affect water quality and the ecological services provided by freshwater ecosystems is an urgent global environmental issue. Predicting how water quality will respond to global changes not only requires water quality data, but also information about the ecological context of individual water bodies across broad spatial extents. Because lake water quality is usually sampled in limited geographic regions, often for limited time periods, assessing the environmental controls of water quality requires compilation of many data sets across broad regions and across time into an integrated database. LAGOS-NE accomplishes this goal for lakes in the northeastern-most 17 US states.LAGOS-NE contains data for 51 101 lakes and reservoirs larger than 4 ha in 17 lake-rich US states. The database includes 3 data modules for: lake location and physical characteristics for all lakes; ecological context (i.e., the land use, geologic, climatic, and hydrologic setting of lakes) for all lakes; and in situ measurements of lake water quality for a subset of the lakes from the past 3 decades for approximately 2600-12 000 lakes depending on the variable. The database contains approximately 150 000 measures of total phosphorus, 200 000 measures of chlorophyll, and 900 000 measures of Secchi depth. The water quality data were compiled from 87 lake water quality data sets from federal, state, tribal, and non-profit agencies, university researchers, and citizen scientists. This database is one of the largest and most comprehensive databases of its type because it includes both in situ measurements and ecological context data. Because ecological context can be used to study a variety of other questions about lakes, streams, and wetlands, this database can also be used as the foundation for other studies of freshwaters at broad spatial and ecological scales. © The Author 2017. Published by Oxford University Press.

  9. LAGOS-NE: a multi-scaled geospatial and temporal database of lake ecological context and water quality for thousands of US lakes

    Science.gov (United States)

    Bacon, Linda C; Beauchene, Michael; Bednar, Karen E; Bissell, Edward G; Boudreau, Claire K; Boyer, Marvin G; Bremigan, Mary T; Carpenter, Stephen R; Carr, Jamie W; Christel, Samuel T; Claucherty, Matt; Conroy, Joseph D; Downing, John A; Dukett, Jed; Filstrup, Christopher T; Funk, Clara; Gonzalez, Maria J; Green, Linda T; Gries, Corinna; Halfman, John D; Hamilton, Stephen K; Hanson, Paul C; Henry, Emily N; Herron, Elizabeth M; Hockings, Celeste; Jackson, James R; Jacobson-Hedin, Kari; Janus, Lorraine L; Jones, William W; Jones, John R; Keson, Caroline M; King, Katelyn B S; Kishbaugh, Scott A; Lathrop, Barbara; Latimore, Jo A; Lee, Yuehlin; Lottig, Noah R; Lynch, Jason A; Matthews, Leslie J; McDowell, William H; Moore, Karen E B; Neff, Brian P; Nelson, Sarah J; Oliver, Samantha K; Pace, Michael L; Pierson, Donald C; Poisson, Autumn C; Pollard, Amina I; Post, David M; Reyes, Paul O; Rosenberry, Donald O; Roy, Karen M; Rudstam, Lars G; Sarnelle, Orlando; Schuldt, Nancy J; Scott, Caren E; Smith, Nicole J; Spinelli, Nick R; Stachelek, Joseph J; Stanley, Emily H; Stoddard, John L; Stopyak, Scott B; Stow, Craig A; Tallant, Jason M; Thorpe, Anthony P; Vanni, Michael J; Wagner, Tyler; Watkins, Gretchen; Weathers, Kathleen C; Webster, Katherine E; White, Jeffrey D; Wilmes, Marcy K; Yuan, Shuai

    2017-01-01

    Abstract Understanding the factors that affect water quality and the ecological services provided by freshwater ecosystems is an urgent global environmental issue. Predicting how water quality will respond to global changes not only requires water quality data, but also information about the ecological context of individual water bodies across broad spatial extents. Because lake water quality is usually sampled in limited geographic regions, often for limited time periods, assessing the environmental controls of water quality requires compilation of many data sets across broad regions and across time into an integrated database. LAGOS-NE accomplishes this goal for lakes in the northeastern-most 17 US states. LAGOS-NE contains data for 51 101 lakes and reservoirs larger than 4 ha in 17 lake-rich US states. The database includes 3 data modules for: lake location and physical characteristics for all lakes; ecological context (i.e., the land use, geologic, climatic, and hydrologic setting of lakes) for all lakes; and in situ measurements of lake water quality for a subset of the lakes from the past 3 decades for approximately 2600–12 000 lakes depending on the variable. The database contains approximately 150 000 measures of total phosphorus, 200 000 measures of chlorophyll, and 900 000 measures of Secchi depth. The water quality data were compiled from 87 lake water quality data sets from federal, state, tribal, and non-profit agencies, university researchers, and citizen scientists. This database is one of the largest and most comprehensive databases of its type because it includes both in situ measurements and ecological context data. Because ecological context can be used to study a variety of other questions about lakes, streams, and wetlands, this database can also be used as the foundation for other studies of freshwaters at broad spatial and ecological scales. PMID:29053868

  10. Pathogenesis of bat rabies in a natural reservoir: Comparative susceptibility of the straw-colored fruit bat (Eidolon helvum) to three strains of Lagos bat virus.

    Science.gov (United States)

    Suu-Ire, Richard; Begeman, Lineke; Banyard, Ashley C; Breed, Andrew C; Drosten, Christian; Eggerbauer, Elisa; Freuling, Conrad M; Gibson, Louise; Goharriz, Hooman; Horton, Daniel L; Jennings, Daisy; Kuzmin, Ivan V; Marston, Denise; Ntiamoa-Baidu, Yaa; Riesle Sbarbaro, Silke; Selden, David; Wise, Emma L; Kuiken, Thijs; Fooks, Anthony R; Müller, Thomas; Wood, James L N; Cunningham, Andrew A

    2018-03-01

    Rabies is a fatal neurologic disease caused by lyssavirus infection. People are infected through contact with infected animals. The relative increase of human rabies acquired from bats calls for a better understanding of lyssavirus infections in their natural hosts. So far, there is no experimental model that mimics natural lyssavirus infection in the reservoir bat species. Lagos bat virus is a lyssavirus that is endemic in straw-colored fruit bats (Eidolon helvum) in Africa. Here we compared the susceptibility of these bats to three strains of Lagos bat virus (from Senegal, Nigeria, and Ghana) by intracranial inoculation. To allow comparison between strains, we ensured the same titer of virus was inoculated in the same location of the brain of each bat. All bats (n = 3 per strain) were infected, and developed neurological signs, and fatal meningoencephalitis with lyssavirus antigen expression in neurons. There were three main differences among the groups. First, time to death was substantially shorter in the Senegal and Ghana groups (4 to 6 days) than in the Nigeria group (8 days). Second, each virus strain produced a distinct clinical syndrome. Third, the spread of virus to peripheral tissues, tested by hemi-nested reverse transcriptase PCR, was frequent (3 of 3 bats) and widespread (8 to 10 tissues positive of 11 tissues examined) in the Ghana group, was frequent and less widespread in the Senegal group (3/3 bats, 3 to 6 tissues positive), and was rare and restricted in the Nigeria group (1/3 bats, 2 tissues positive). Centrifugal spread of virus from brain to tissue of excretion in the oral cavity is required to enable lyssavirus transmission. Therefore, the Senegal and Ghana strains seem most suitable for further pathogenesis, and for transmission, studies in the straw-colored fruit bat.

  11. Ciclo anual de la clorofila-α satelital en el archipiélago de Juan Fernández (33°S, Chile

    Directory of Open Access Journals (Sweden)

    Isabel Andrade

    2012-09-01

    Full Text Available La variabilidad espacial y temporal del ciclo anual de la clorofila-α en el archipiélago de Juan Fernández se analiza usando ocho anos de datos satelitales de clorofila-α, viento, corrientes y nivel del mar. Este archipiélago está conformado por tres islas: Robinson Crusoe-Santa Clara (RC-SC y Alejandro Selkirk (AS. Las islas RC-SC se encuentran en una región de alta energía cinética y mayores concentraciones de clorofila-α definida como Zona de Transición Costera, en cambio la isla AS se encuentra en una región de baja energía cinética y menores concentraciones de clorofila-α denominada Zona Oceánica. RC-SC posee un incremento de las concentraciones de clorofila-a en el lado suroeste, mientras que AS posee sus mayores concentraciones en el lado oeste, indicando la presencia de procesos forzantes diferentes. En ambas islas el ciclo anual de la clorofila es significativo y comienza a incrementar en abril, alcanzando valores relativamente altos entre junio y noviembre, disminuyendo hacia diciembre, hasta alcanzar un mínimo hacia fines de marzo. Este ciclo anual aparece desacoplado con el viento y acoplado con la energía cinética. Incrementos invernales de clorofila-a aparecen vinculados con remolinos de mesoescala provenientes de la zona continental, mientras que incrementos primaverales se podrían asociar a procesos locales vinculados al "efecto masa de isla". En ambas islas existen incrementos significativos de la clorofila-a en la banda anual y cuasi-bianual, pero sólo en AS se encontró una fluctuación significativa en la banda interanual vinculada con el Nino y la Oscilación del Sur.

  12. Young peoples awareness and support for tobacco control legislation: A study among in-school youth in Lagos, Nigeria.

    Science.gov (United States)

    Odukoya, Oluwakemi Ololade; Chife, Jacob Obi; Odeyemi, Kofoworola A; Nwangwu, Genevieve I

    2015-01-01

    The increasing awareness of the health risks associated with tobacco use has led many countries to enact tobacco control legislation to protect citizens from the harmful effects of tobacco use. Young people are important stakeholders in many aspects of tobacco control legislation. This study.aims to assess the awareness of existing tobacco control laws among young people, their attitudes towards these laws and the factors associated with youth awareness and support for tobacco control legislation in Nigeria. A descriptive cross-sectional survey was carried out among 950 students enrolled in six randomly selected public and private schools in the, Mushin local government area of Lagos state using a multi stage sampling method. The respondents completed a pre-tested self-administered questionnaire eliciting information on their awareness and support for tobacco control laws in selected thematicareas Data was analysed using SPSS 17.0 and presented as frequency tables and cross tabulations. Most of the participants were between 14-18 years of age (55.8%) with a mean age of 14.1 +/- 2.2 years. There were slightly more male than female respondents. About two-thirds of the respondents were aware that laws exist to regulate tobacco use in Nigeria. Specifically, more than 60% of the students knew that tobacco smoking was outlawed in schools, medical establishment, public vehicles and offices. Many were aware of the advert bans on tobacco products on television, newspapers, radio, magazines and cinemas. The respondents were however less informed of the penalties for violating tobacco restriction laws. Majority supported the law prohibiting cigarette smoking in health facilities (84.3%), schools (83.7%), public transportation (79.5%) and cinemas (76.3%). Relatively fewer (49.6%) respondents felt that smoking should be prohibited in bars, restaurants and nightclubs. A significant proportion believed that young people in Nigeria should not be allowed to buy (76.4%) or sell (76

  13. Análisis histológico de los injertos de cartílago autológos envueltos en fascia Histologic analisis of autologous cartilage graft wrapping with fascia

    Directory of Open Access Journals (Sweden)

    N.E. Cedeño Lamus

    2011-06-01

    Full Text Available Los injertos de cartílago son ampliamente utilizados en Cirugía Plástica; sin embargo, existe un riesgo potencial de reabsorción que puede comprometer los logros obtenidos. Algunos autores presentan resultados exitosos utilizando injertos de cartílago envueltos en fascia. El propósito del trabajo es aportar evidencia científica en relación a las posibles ventajas de los mismos. Realizamos un estudio descriptivo, prospectivo, experimental y comparativo de 20 ratas blancas Sprague-Dawley, desde mayo a octubre del 2007. Las unidades de muestra fueron los cortes histológicos obtenidos del cartílagos tras ser implantados durante 8 semanas. Trabajamos con 2 grupos: grupo estudio, de 10 ratas con cartílago autológo envuelto en fascia y grupo control, de 10 ratas con cartílago sólo. Se realizó examen histológico e inmunohistoquímico determinando viabilidad, reacción inflamatoria, necrosis, reabsorción y capacidad de regeneración. Los injertos de cartílago autólogo envueltos en fascia resultaron menos fiables que los injertos de cartílago solos, mostrando una mayor reabsorción (80% frente a 60%, menor capacidad de regeneración (50% frente a 80%, mayor respuesta inflamatoria (80% frente a 30%, menor viabilidad (16% frente a 38% y con necrosis (30%. El análisis estadístico no mostró diferencia significativa. En conclusión, la envoltura en fascia del injerto de cartílago autólogo no aumentó su viabilidad, ni disminuyó su reabsorción, en animales de experimentación.Cartilage grafts are widely used in Plastic Surgery; however, there is a potential risk of reasorption that may affect the results obtained. Some authors report successful achievements using cartilage grafts wrapped in fascia. The purpose of this paper is to provide scientific evidence regarding the potential benefits of cartilage grafts wrapped with fascia. A descriptive, prospective, experimental and comparative study of some 20 white Sprague-Dawley rats was

  14. Efectividad del programa “Yatichiri” en el discipulado de los líderes de grupos pequeños de la zona metropolitana de la Misión del Lago Titicaca, Puno, Perú, 2016.

    OpenAIRE

    Tula Llanos, Javier Cesar

    2016-01-01

    Problema: ¿Cuál es la efectividad del programa “Yatichiri” en el discipulado de los líderes de grupos pequeños de la zona metropolitana de la Misión del Lago Titicaca, Puno, Perú, 2016? Propósito: Determinar la efectividad del programa “Yatichiri” en el discipulado de los líderes de grupos pequeños de la zona metropolitana de la Misión del Lago Titicaca, Puno, Perú, 2016. Metodología: El presente estudio es de tipo experimental; explicativa y el diseño de la investigación fue pre experimental...

  15. Modificaciones histológicas del cartílago hialino a nivel de la articulación maleolar en ratas artríticas tratadas con Zea mays L (variedad morada)

    OpenAIRE

    Villalobos Pacheco, Eduardo Jesús

    2017-01-01

    Demuestra que el extracto de Zea mays L reduce las modificaciones histológicas en el cartílago hialino a nivel de la articulación maleolar en términos de la estructura, células y estado de integridad del cartílago, en ratas artríticas inducidas por pristane. Realiza un modelo de artritis en ratas Sprague Dawley inducido por pristane vía subdérmica (0.2 ml). Se distribuyeron en control positivo (n=10) vehículo (1ml/100g), Metotrexato (n=10) 0,1mg/Kg, Indometacina (n=10) 0.6 mg/kg, Zea mays 1% ...

  16. EFECTOS DE LA FLUCTUACIÓN DEL NIVEL DEL AGUA SOBRE LA ESTRUCTURA DEL ENSAMBLAJE DE ROTÍFEROS EN EL LAGO LARGO (SISTEMA YAHUARCACA - LLANURA DE INUNDACIÓN DEL RÍO AMAZONAS - COLOMBIA

    Directory of Open Access Journals (Sweden)

    Andrade Camilo

    2011-12-01

    Full Text Available Se realizó un reconocimiento taxonómico y estimación de la densidad en el ensamblaje de rotíferos en el lago Largo, del sistema de lagos Yahuarcaca, en la ribera colombiana del río Amazonas, a partir de muestreos en las fases hidrológicas de aguas bajas, ascenso y descenso. Se identificaron 68 especies, 28 de ellas son nuevos registros para ambientes colombianos. Se encontró aumento en la riqueza en las épocas de ascenso y descenso, siendo mayor en la zona litoral respecto de la limnética, y la tendencia a mayor similitud taxonómica entre ambas zonas en el periodo de aguas bajas, debido al mínimo desarrollo de macrófitas en esta fase y la consecuente menor heterogeneidad espacial. Se observó el predominio de rotíferos con trofi adaptados para moler y triturar partículas (maleado y maleorramado en las épocas de aguas bajas (Brachionus ahlstromi y descenso (Filina saltator y en la época de ascenso de Polyarthra vulgaris, con trofi adaptado para perforar y succionar fluidos de algas y otros organismos (virgado y apéndices que favorecen la rápida natación. En general, se establecieron posibles relaciones entre la riqueza y la densidad de rotíferos con cambios en características como el desarrollo de vegetación acuática en el litoral, profundidad del lago, nivel de conectividad con los otros lagos del sistema Yahuarcaca, influencia de aguas blancas del Amazonas y negras de origen local, potenciales recursos nutricionales y depredadores, y posible efecto de arrastre por la corriente.

  17. Use of the flooded forest by fish assemblages in lakes of the National Park of Anavilhanas (Amazonas, Brazil Uso do igapó por assembléias de peixes nos lagos no Parque Nacional das Anavilhanas (Amazonas, Brasil

    Directory of Open Access Journals (Sweden)

    Janette Noveras

    2012-01-01

    Full Text Available We evaluated diversity and distribution of fish species in two habitats: flooded forest and open water of lakes of Rio Negro. Each of four lakes within the Anavilhanas Archipelago was sampled three times from 2009-2010. Species diversity generally was higher in flooded forests and at night, according to correspondence analysis. Predators were most active at night, but showed no preference between the flooded forest and open water habitats. Omnivores, filter feeders, and detritivores were most active during the day.Avaliamos a diversidade e a distribuição de espécies de peixes em dois habitats: floresta alagada e água aberta de lagos do rio Negro. Três amostragens foram realizadas em quatro lagos do Arquipélago de Anavilhanas, em 2009 e 2010. Em geral, a diversidade de espécies foi maior na floresta alagada e durante a noite. A análise de correspondência indicou que predadores estavam mais ativos a noite nos dois habitats. Onívoros, filtradores e detritívoros foram mais capturados durante o dia.

  18. Diet of Cnesterodon decemmaculatus (Poeciliidae and Jenynsia multidentata (Anablepidae in a hypertrophic shallow lake of Uruguay Dieta de Cnesterodon decemmaculatus (Poeciliidae y Jenynsia multidentata (Anablepidae en un lago hipereutrófico de Uruguay

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    Federico Quintans

    2009-03-01

    Full Text Available Se analizaron las dietas de Cnesterodon decemmaculatus (Jenyns, 1842 y Jenynsia multidentata (Jenyns, 1842 en el Lago Rodó, un lago urbano hipereutrófico de Montevideo, Uruguay. Ambas especies mostraron un comportamiento omnívoro. Los ítems más consumidos por C. decemmaculatus fueron zooplancton, perifiton, fitoplancton y detritos; la dieta de J. multidentata incluyó zooplancton, insectos, crustáceos y peces juveniles. Estos resultados sugieren que ambas especies pueden actuar como planctívoros facultativos. La comunidad de peces de este lago se caracteriza por la dominancia de C. decemmaculatus y J. multidentata. Bajo esta condición, la depredación sobre el zooplancton de gran tamaño podría indirectamente estar contribuyendo a una alta abundancia de fitoplancton y una baja transparencia del agua.Diet of Cnesterodon decemmaculatus (Jenyns, 1842 and Jenynsia multidentata (Jenyns, 1842 were analysed in Lake Rodó, an urban hypertrophic lake from Montevideo, Uruguay. Both species displayed omnivory. The most consumed items for C. decemmaculatus were zooplankton, periphyton, phytoplankton and detritus; the diet of J. multidentata included zooplankton, insects, crustaceans and juvenile fish. Our results suggest that both species could be acting as facultative planktivores. The fish community of this lake is characterised by the dominance of C. decemmaculatus and J. multidentata. Under this condition, predation on large-bodied zooplankton could indirectly be contributing to maintain a high phytoplankton abundance and a low water transparency.

  19. Taxonomía y distribución de los corales hermatípicos (Scleractinia del Archipiélago de Revillagigedo, México

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    Ketchum James T.

    2001-12-01

    Full Text Available A pesar de los recientes registros detallados sobre los corales escleractinios del Archipiélago Revillagigedo, el trabajo taxonómico sobre esta fauna ha sido escaso. Por lo anterior, se hace necesario conformar una base taxonómica sólida para fundamentar otros trabajos a nivel comunitario. Las recolectas de los especimenes se realizaron a diferentes profundidades y en tres de las islas que componen el archipiélago: Socorro, Clarión y San Benedicto, durante 5 salidas de campo de 1990 a 1995. Un total de 250 especimenes fueron recolectados, transportados al laboratorio, catalogados y depositados en el Museo de Historia Natural de la Universidad Autónoma de Baja California Sur. La identificación de los corales se llevó a cabo utilizando la técnica de co-ocurrencia apoyado con las descripciones, diagnosis e ilustraciones aparecidas en diferentes publicaciones, así como con análisis morfológicos. Las distribuciones coralinas se tomaron de la literatura existente sobre el tema. Se describen 22 especies de corales escleractinios zooxantelados con su distribución geográfica local y mundial, y cada una ilustrada con macro y microfotografías. Se incluyen también las claves de identificación a nivel de género y de especie. Porites y Pocillopora muestran el nivel más alto de riqueza de especies con gran variación intraespecífica, además de un cierto número de convergencias morfológicas dentro y entre especies conformando complejos de especies, y algunas nuevas especies y morfos. Clarión, la isla más antigua y aislada del archipiélago, presenta un cierto número de formas coralinas que pudieran considerarse como especies nuevas. Más de la mitad de las especies encontradas en las Revillagigedo se distribuyen exclusivamente en islas oceánicas del Pacífico oriental y cerca de un tercio se distribuyen sólo en el archipiélago. Las Revillagigedo muestran gran similitud faunística y comparten cierto número de especies de peces y

  20. Comportamiento de las precipitaciones en el sector del lago Titicaca (Bolivia durante 'El fenómeno El Niño'

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    1998-01-01

    Full Text Available REGIME DES PRECIPITATIONS DANS LE SECTEUR BOLIVIEN DU LAC TITICACA AU COURS DU “PHENOMENE EL NIÑO”. Le phénomène “El Niño” affecte tout le territoire bolivien, provoquant des sécheresses dans plusieurs régions de l’Altiplano, dont fait partie le secteur du lac Titicaca, même en tenant compte du rôle thermorégulateur joué par le grand volume d’eau du lac. Ce travail a été réalisé pour évaluer l’influence des épisodes ENSO (phase chaude sur le régime des précipitations dans ce secteur, en apportant une attention particulière à l’ENSO 1982-1983. Nous avons étudié les précipitations de l’été (période humide provenant de 7 stations réparties dans les environs du lac Titicaca. Les premiers résultats montrent qu’il existe un déficit de précipitations dans la région étudiée, principalement au cours du El Niño 1982-1983 et de l’été antérieur où certains secteurs se situèrent cependant au-dessus de la normale. El fenómeno “El Niño” afecta significativamente a todo el territorio boliviano, con sequías en diferentes regiones del Altiplano del que no escapa el sector del lago Titicaca, aun teniendo en cuenta el comportamiento termorregulador del gran volumen de agua del Lago. Este trabajo se realizó para ver la influencia de los episodios ENOS (fase caliente en el comportamiento de las precipitaciones en el sector arriba nombrado se hizo énfasis en el ENOS 1982-1983. En el estudio se realizó un análisis del comportamiento de las precipitaciones de siete estaciones distribuidas alrededor del lago Titicaca. También se hizo una correlación con las aportaciones, probabilidades de precipitación para El Niño 1997, todo lo anteriormente nombrado para el periodo húmedo (verano. Como primeros resultados se tiene que, en toda la región estudiada, existe un déficit de precipitación principalmente en El Niño 1982-1983, y en el verano anterior 1981-1982, a pesar de que en algunos de los sectores

  1. Diel vertical migration patterns of three zooplankton populations in a Chilean lake Patrones de migración vertical de tres poblaciones de zooplancton en un lago chileno

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    RODRIGO RAMOS-JILIBERTO

    2004-03-01

    Full Text Available In this work we analyzed the depth-distribution, at noon and midnight, of three zooplankton populations which are common inhabitants of lakes from central Chile and coexist in lake El Plateado. The species were Tumeodiaptomus diabolicus, Diaphanosoma chilense and Bosmina longirostris. Also, we analyzed the association between the depth-specific abundances of the groups and the depth-specific temperature and oxygen values during the sampling period. Our results show that: (1 the three population exhibited diel vertical migration during part of the year; (2 T. diabolicus and D. chilense exhibited the normal pattern of vertical migration, and B. longirostris presented both the normal and the reverse pattern; (3 for all species and most dates, zooplankters experience significant decreases in oxygen exposure as a consequence of downward migration. Temperature costs are less important but present in T. diabolicus and D. chilense during part of the yearEn este trabajo analizamos la distribución en profundidad, a mediodía y medianoche, de tres poblaciones de zooplancton que son habitantes comunes de los lagos de Chile central, y que coexisten en el lago El Plateado. Las especies fueron Tumeodiaptomus diabolicus, Diaphanosoma chilense y Bosmina longirostris. También analizamos la asociación entre las abundancias profundidad-específicas de los grupos y los valores profundidad-específicos de temperatura y oxígeno durante el periodo de muestreo. Nuestros resultados muestran que: (1 las tres poblaciones exhibieron migración vertical durante una parte del año; (2 T. diabolicus y D. chilense exhibieron el patrón normal de migración, y B. longirostris presentó tanto el patrón normal como el inverso; (3 para todas las especies y en la mayoría de las fechas, el zooplancton presentó reducciones significativas en su exposición al oxígeno como consecuencia de la migración descendente. Los costos térmicos son menos importantes pero existentes en T

  2. Collective action and symbolic capital in the artisanal fisheries: An analysis of the Local Food Systems of Reloncaví Estuary (Los Lagos, Chile

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    Saavedra Gallo, Gonzalo

    2016-06-01

    Full Text Available In a post-industrial economy, it is as important to understand “material” productive processes in the local community as the processes through which global value chains “expropriate” or “co-opt” common immaterial assets. However, the literature on collective action and the management of common goods generally focuses on matters of the control and governance of material resources. The article commences with an analysis of the relations between the production of value, collective action and the rentier nature of contemporary capitalism and its entrepreneurial ideology. Then, we present a detailed analysis of the case of mytilid seed capture in the Reloncaví Estuary (Los Lagos Region, Chile. This case shows us the failure of modernisation policies which are based on converting local producers into modern entrepreneurs. To adopt a successful value strategy, a very different problem must be addressed, namely the difficulties of local communities in managing successfully their own common immaterial values. Faced with the dichotomous logic of neoliberalism, communities must reunite these immaterial values and the associated common material resources, and modulate the friction between them.En una economía postindustrial, es importante comprender los procesos productivos “materiales” en la comunidad local como procesos a través de los cuales las cadenas globales de valor “expropian” o “cooptan” los activos inmateriales comunes. Sin embargo, la literatura sobre acción colectiva y gestión de los bienes comunes generalmente se focaliza en el control y la gobernanza de los recursos materiales. Este artículo comienza con un análisis de las relaciones entre la producción del valor, la acción colectiva y la naturaleza rentista de capitalismo contemporáneo y su ideología emprendedora. A continuación, presentamos un análisis detallado del caso del cultivo de semillas de mitílidos en el Estuario de Reloncaví (Los Lagos, Chile

  3. Knowledge, non-use, use and source of information on contraceptive methods among women in various stages of reproductive age in rural Lagos, Southwest Nigeria.

    Science.gov (United States)

    Afolabi, Bamgboye M; Ezedinachi, Emmanuel Nu; Arikpo, Iwara; Ogunwale, Abiodun; Ganiyu, Damilola Fatimah; Abu, Rashidat A; Ajibade, Adewunmi A

    2015-01-01

    Contraceptives are advocated to be used against unwanted pregnancy and sexually transmitted diseases as unsafe abortion contributes to high maternal mortality in Nigeria while unwanted pregnancies have terminated the educational development of many females. This questionnaire-based survey aimed to describe the knowledge, nonuse, and use of various contraceptive methods among women in different child-bearing age groups in rural Lagos, Nigeria. Between 2012 and 2013, 816 females in rural communities within Lagos State were surveyed for their knowledge, source of information, and use of contraceptives. They were grouped into early, mid, and late reproductive age. Statistical analysis of data harvested from respondents was carried out using STATA 13 software. In all, 816 females in different stages of reproductive age were involved in the study, among whom 19% were single, 78% married, 3% divorced, and 0.5% widowed. About 6% had no formal education, while the majority (81%) were of the Yoruba ethnic group. Married respondents were approximately thrice more likely to know of contraceptives than single respondents ( χ 2 =29.9, P =0.000, odds ratio =2.9, 95% confidence interval =1.9, 4.2). Condom use was the most widely known and used method of contraceptive regardless of marital status and reproductive age status. Information about contraceptives was mainly from health facilities among married and divorced women and from school or educational institution among singles. Overall prevalence of contraceptive use was 51.9%. Nonuse of contraceptives was 43% among married women and 67% among singles. Knowledge of contraceptive method was negatively associated with marital status ( t =-2.24, P =0.025) but positively associated with source of information on contraceptives ( t =20.00, P =0.000). Use of contraceptives was positively associated with stage of reproductive age ( t =1.94, P =0.05) and source of information on contraceptives ( t =11.22, P =0.000), but negatively

  4. ASSOREAMENTO DE LAGO NA SUB-BACIA DO CÓRREGO DA CASCATA, EM BOTUCATU (SP: IMPLICAÇÕES MORFOMÉTRICAS

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    Ivalde Belluta

    2014-07-01

    Full Text Available A bacia hidrográfica é considerada uma unidade de estudo, planejamento e gerenciamento territorial para a conservação dos recursos naturais, moldada pelas condições geológicas e climáticas locais. Assim, este estudo teve por objetivo avaliar as características morfométricas da sub-bacia do Córrego da Cascata, em Botucatu (SP, e suas implicações no processo de assoreamento de um lago integrante dessa sub-bacia. A avaliação contou com índices gerados a partir de dados calculados com base cartográfica digitalizada e georreferenciada na escala 1:10.000, com utilização do AutoCAD Map 2004. Foi também utilizado o software Quantum GIS 1.8, para gerar o modelo digital de elevação (MDE e o mapa de declividades que permitiu obter a declividade média (Dm da sub-bacia. Através dos índices fator de forma (Kf, sinuosidade (Is, circularidade (Ic e coeficiente de compacidade (Kc, a sub-bacia do Córrego da Cascata apresentou forma alongada, com baixa propensão a enchentes e com escoamento rápido. Os índices densidade de drenagem (Dd e relação de relevo (Rr indicaram drenagem média e mais eficiente, o que favorece a elevada dissecação e o médio estágio erosivo. O índice coeficiente de rugosidade (Cr indicou que se trata de uma sub-bacia vocacionada à agricultura. A intervenção antrópica na linha do divisor de águas observada in loco é o principal fator do carreamento de sedimentos no lago e não apenas compromete a beleza paisagística do local como altera a vida aquática do ecossistema.

  5. Murciélagos (Chiroptera: Mammalia del Parque Nacional Yurubí, Venezuela: listado taxonómico y estudio comunitario

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    Mariana Delgado-Jaramillo

    2011-12-01

    Full Text Available Los murciélagos constituyen el grupo de mamíferos más diversificado en la región neotropical y representan un componente clave en la dinámica de muchos ecosistemas terrestres. En este trabajo se describen los resultados de un estudio sobre la quiropterofauna del Parque Nacional Yurubí (ubicado en la zona montañosa del norte de Venezuela, se incluye un listado taxonómico y la caracterización de algunos atributos comunitarios en ambientes predominantemente boscosos. Los datos evaluados fueron obtenidos mediante la revisión de colecciones zoológicas y muestreos diversificados realizados entre febrero y julio del 2009, en un gradiente altitudinal (100-1 500m, que integra a tres unidades ecológicas: bosque semideciduo, bosque siempreverde y selva nublada. Se registraron 64 especies agrupadas en cinco familias, lo que constituye el 63% de los murciélagos conocidos en la Cordillera de la Costa. La familia Phyllostomidae fue dominante (42 especies; 66% del total, seguida por Vespertilionidae, Molossidae, Emballonuridae y Mormoopidae. La comunidad presente a baja elevación fue la más diversificada en términos taxonómicos, mientras que la del piso superior evidenció el menor grado de diversificación. Se identificaron 11 categorías tróficas, con dominancia de los insectívoros en cuanto a la riqueza taxonómica y de los frugívoros en lo que respecta a la abundancia. Nuestros resultados permiten inferir, en un contexto general, que los ecosistemas boscosos del área de estudio muestran un buen estado de conservación, en virtud de la presencia de una proporción relativamente alta de especies pertenecientes a la subfamilia Phyllostominae, cuyos componentes han sido considerados por otros autores como indicadores del grado de conservación de hábitats boscosos primarios, así como la presencia de otras especies con prioridades de conservación. Todos estos aspectos, le confieren a esta área protegida un alto valor proteccionista, en

  6. High prevalence of complementary and alternative medicine use among patients with sickle cell disease in a tertiary hospital in Lagos, South West, Nigeria.

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    Busari, A A; Mufutau, M A

    2017-06-07

    Attention and interest in the use of complementary and alternative medicine (CAM) has been reignited globally, most especially in patients with chronic diseases. Sickle cell disease (SCD) is one of such chronic diseases associated with devastating clinical and psychosocial consequences, thus leading those affected to seek alternative treatment apart from orthodox medicine. Hence, this study aimed to determine the prevalence, pattern and tolerability of the use of CAM in patients with SCD in the Lagos University Teaching Hospital (LUTH). This was a cross-sectional survey of 200 respondents with SCD attending the hematology clinics of the Lagos University Teaching Hospital over a period of 3 months. Data on socio-demographic characteristic, clinical profile, the types and sources of CAM used were collected using a well structured pretested questionnaire. The data obtained were analyzed using Statistical Package for Social Sciences (SPSS®) version 17. Of the 200 patients who participated in the study, 113; 56.5% were males and 87; 43.5% were females. Majority of the SCD patients were 1-10 years old and their mean age was 18.8 ± 14.39 years. CAM was reportedly used by 88.5% of the respondents. Biological (herbal) products 156; 62.9% were the most commonly used CAM, followed by alternative medical systems 52; 20.9% and mind-body interventions 30; 12.1%. Relations, friends and neighbors influenced 85.2% of CAM users by recommending CAM to them. Tolerability of CAM was perceived to be excellent as only 33 (18.6%) of the respondents abandoned the use of CAM. Comparing CAM users and CAM non-users, there was no statistical significant difference in the proportion of those >18 years (45.76% vs 52.17%; p = 0.658), those who experienced two or more crises (51.41% vs 34.78%; p = 0.183), and those with stable haemoglobin concentration of >7 g/dL (15.81% vs 8.69%; p = 0.539) More patients among CAM non-users (91.30%) significantly spend over 3000 Naira (USD 15) per

  7. Produtividade e características biológico-reprodutivas do aruanã, Osteoglossum bicirrhosum (Osteoglossiformes: Osteoglossidae, na lagoa Lago Grande, bacia do Rio Putumayo, Peru

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    Carlos Andre Amaringo Cortegano

    2014-12-01

    Full Text Available Devido à importância da pesca ornamental de aruanã, e da lagoa Lago Grande como uma das principais áreas para a captura de alevinos de aruanã no Peru, o presente estudo tive como objetivo avaliar a produtividade e as características biológico-reprodutivas na espécie na lagoa, a mesma que está localizada na bacia baixa do Rio Putumayo e representa uma das áreas de pesca preferidas pela importante população de aruanã que a habitam. Foram feitas análises de densidade populacional, biometria, maturidade sexual, desova, fecundidade, proporção sexual, níveis da água na lagoa e sobre a produção de alevinos de aruanã. O estudo foi desenvolvido entre março a julho de 2012 e as atividades foram realizadas em parceria com a Agrupação de Pescadores “Fronteras Vivas”. De modo geral, a densidade populacional extrapolada à área da lagoa foi de 1.29 peixes∕ha. Daqueles, a densidade de progenitores na lagoa foi de 1.19 peixes∕ha. Além disso, os machos tiveram comprimento total e padrão e peso total maior do que as fêmeas, e foi observado que o período de desova ocorreu em sincronia com o início da crescente no nível das águas. A média de oocitos produzidos por fêmeas de aruanã foi de 201 e a proporção sexual foi equilibrada. Assim mesmo, o estudo mostra a capacidade de produção da lago. Nesse sentido, o nível da água influenciou na produção de alevinos de aruanã. É importante continuar os estudos da espécie para regulamentar a pesca e recuperar populações.

  8. Life-stages, exploitation status and habitat use of Lutjanus goreensis (Perciformes: Lutjanidae in coastal marine environments of Lagos, SW Nigeria

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    Kafayat A. Fakoya

    2015-03-01

    Full Text Available The Gorean snapper, Lutjanus goreensis is an important component of artisanal fisheries and trawl landings in the Gulf of Guinea. Despite its economic importance, there is a dearth of information on size structure and life history strategies of the species. Therefore, the objectives of this study were to provide baseline data on the life stages, exploitation status and habitat use for the species in Nigeria. Monthly samples were obtained from artisanal and trawl catches in Five Cowrie Creek and Lagos coastal waters between December 2008 and December 2010, respectively. Length-frequency distributions of the fishes caught were analysed to provide preliminary information on mean and modal lengths at capture and life - history strategies based on habitat use and estuarine-dependency for L. goreensis. A total of 822 specimens of L. goreensis were collected from Five Cowrie Creek while 377 specimens were collected from Lagos coastal waters. Total length varied between 7.90-34.90cm for creek samples and from 21.90-56.10cm for marine samples. Length-frequency histograms showed polymodal size distributions in creek and marine samples. Length-frequency distributions of L. goreensis showed a high abundance of juveniles (<20cm and sub-adults (20-35cm which accounted for 84.1% and 68.4% of creek and marine samples examined, respectively. For the creek samples, fish in modal length class of 13.00-13.99cm were the most exploited while in the marine samples, length classes of 29.00-30.99cm and 31.00-32.99cm constituted the most frequently exploited fishes. Increase in total lengths from the creek (mean±SD; 16.19±3.73cm to the marine habitat samples (32.89±6.14cm indicated ontogenetic shift in habitat use. Occurrence of a predominant juvenile population in Five Cowrie Creek by L. goreensis suggests estuarine-dependency and is indicative of a temporary juvenile habitat or a migratory corridor. In conclusion, data from the presently reported study and previous

  9. Health care-seeking behavior among patients with chronic kidney disease: A cross-sectional study of patients presenting at a single teaching hospital in Lagos

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    Babawale Taslim Bello

    2015-01-01

    Full Text Available Introduction: Health care-seeking behavior of individuals determines how early they present for appropriate care. In patients with chronic kidney disease (CKD, late presentation to the nephrologist is associated with poor outcomes. This study aims to describe the health care-seeking behavior of patients with CKD attending the nephrology outpatient clinic of a teaching hospital located in Lagos, Nigeria. Materials and Methods: This was a cross-sectional survey conducted on 104 consecutive adult patients with CKD, presenting for the first time at the nephrology outpatient clinic of a teaching hospital located in Lagos, South West Nigeria. Information was retrieved from the study participants using a structured interviewer-administered questionnaire, entered into an Excel spreadsheet, and analyzed using Epi Info® statistical software version 7.0. Results: Overall, 74 (71.2% patients sought help, first from a trained health care provider, and their health care-seeking behavior was adjudged to be appropriate. Compared to patients with appropriate health care-seeking behavior, those with inappropriate health care-seeking behavior had a lower mean age (40.4 ± 13.7 years vs 47.3 ± 15.6 years;P = 0.03, were less likely to see their illness as a medical problem (46.7% vs 67.6%;P = 0.04, more likely to have a monthly income less than N25,000 ($150 (80.0% vs 59.5%;P = 0.04, and have received below tertiary level education (20.0% vs 48.6%; P < 0.01. They were also more likely to have consulted more than one health care provider before being referred to our clinic. The factors predicting inappropriate health care-seeking behavior were education below the tertiary level and age less than 45 years. Conclusion: Though health care-seeking behavior was appropriate in majority of our patients with CKD, there remains a need for improved public health awareness.

  10. Variación de los Organismos Fitoplanctónicos y la Calidad del Agua en el Lago de Chapala, Jalisco, México Variación de los Organismos Fitoplanctónicos y la Calidad del Agua en el Lago de Chapala, Jalisco, México

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    Judith García Rodríguez

    2012-02-01

    Full Text Available The Chapala lake has been exposed to several sources and levels of contamination, like municipal discharges of different communities, waters of agricultural return and residual waters poured by industries, coming from the Lerma river. Therefore, it is important to characterize both, the conditions through time and the phytoplanktonics organisms in this aquatic system in every phase, as well as to analyze the variations of the water quality and their relationships in three areas of the lake. These activities were carried out every three months from May, 1992 to February, 1993, sampling the surface and to one meter deep in 21 stations in the Chapala lake. Later, a qualitative and quantitative analysis was carried of the phytoplanktonics organisms. The water quality was evaluated considering 23 parameters with data provided by the Centro de Estudios Limnológicos de Guadalajara, Jal. The higest phytoplanktonic abundance was of 16 048 cel/mL at the surface and to one meter deep of 8 309 cel/mL. Alogenics processes related to the different conditions presented by the phytoplankton structure were presented; turbidity was caused in a smaller scale by the algal quantity and affected directly the abundance of the organisms, the pH was basic and the nutrients like phosphorus a total match, ortophosphates and organic nitrogen were abundant, therefore no restrictive constraints were considered. Through the time the Chapala Lake has shown continuous values of quality of the water with fluctuations in some registrations but the eutrophic phase stays as a result of the indiscriminate contribution of pollutants of diverse types.El Lago de Chapala ha estado expuesto a diversas fuentes y niveles de contaminación, como descargas municipales de diferentes comunidades, aguas de retorno agrícola y aguas residuales provenientes del río Lerma, vertidas por industrias. Por ello, es importante determinar las variaciones que presentan a través del tiempo los

  11. Qualidade da água durante a formação de lagos profundos em cavas de mineração: estudo de caso do lago de Águas Claras - MG Water quality during the filling of deep mining lakes: case study of Aguas Claras pit lake - MG

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    Eduardo von Sperling

    2004-09-01

    Full Text Available O trabalho apresenta os resultados do monitoramento de qualidade da água durante o processo inicial de formação do Lago de Águas Claras, cuja gênese é decorrente do enchimento da cava exaurida de uma mineração de ferro. Em sua configuração final o lago possuirá uma área de 0,7 km² e uma profundidade máxima de 234 m, o que o posicionaria atualmente como o ambiente hídrico mais profundo do país. Constata-se o predomínio de uma boa qualidade de água, com baixo grau de mineralização, excelentes condições de oxigenação e ausência de contaminação orgânica e mineral. No aspecto hidrobiológico destaca-se a frequente alternância no predomínio de grupos algais, indicando a instabilidade de ecossistemas que se encontram em processo de formação.The paper presents the results of a broad monitoring program carried out during the beginning of the filling process of Lake Aguas Claras, Brazil. This lake was created after the exhaustion of an iron ore mining activity. In its final conformation the lake will have a surface area of 0,7 km² and the maximum depth of 234 m, which will make it the deepest lake in the country. The results of a two years monitoring program show the prevalence of good water quality (well oxygenated, low degree of mineralization, absence of organic and mineral contamination, but also a quite interesting shift in the dominance of phytoplanktonic groups, indicating the high instability of lakes that are undergoing a process of formation.

  12. Reciente invasión del Archipiélago de Tierra del Fuego por la avispa Vespula germanica (Hymenoptera: Vespidae

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    Francisco J. SOLA

    2015-01-01

    Full Text Available Vespula germanica es una especie invasora de nivel mundial que ha sido detectada en la Patagonia continental de la Argentina y Chile. En este trabajo, ampliamos el rango de distribución de este véspido de la Patagonia, al Archipiélago de Tierra del Fuego. Indicamos ubicación, año y ambiente de cada avistamiento y/o captura. El patrón de expansión indicaría que esta especie está bien establecida tanto en áreas naturales como antrópicas, y probablemente ha dependido del transporte humano para llegar desde el continente. Esta comunicación breve sirve también para tomar medidas prácticas de mitigación y control de esta especie, incluyendo información básica para que la ciudadanía tome conciencia sobre su presencia y esto ayude a evitar su transporte a nuevos lugares. Finalmente, se recomienda mayor investigación para el manejo y control de esta especie invasora en Tierra del Fuego.

  13. The effect of a short anti-smoking awareness programme on the knowledge, attitude and practice of cigarette smoking among secondary school students in Lagos state, Nigeria.

    Science.gov (United States)

    Odukoya, O O; Odeyemi, K A; Oyeyemi, A S; Upadhyay, R P

    2014-06-01

    This study aimed to assess the effect of a short school-based anti-smoking program on the knowledge, attitude and practice of cigarette smoking among students in secondary schools in Lagos State. A non-randomized, controlled intervention study was done among respondents selected using multi-stage sampling. Baseline data was collected using self-administered questionnaires. An anti-smoking awareness programme was carried out among students in the intervention group using health talks, information leaflets and posters. Post-intervention data collection took place three months later. There were significant increments in the mean knowledge and attitude scores after the intervention. There was however no statistically significant change in the current smoking habits of respondents (4% vs. 3%; p=0.41)in the intervention group. Nevertheless, in the intervention group, the number of never- smokers who reported that they were likely to initiate cigarette smoking within the next year significantly reduced. There was also a significant increase in the proportion of current smokers who desired to quit smoking. Even brief anti-smoking programs of this nature are effective at improving the knowledge and modifying the attitude of the respondents but do not improve smoking habits. It however motivated the desire to quit among current smokers. Health education sessions and periodic anti-smoking programmes should be introduced into the secondary school curriculum. More intensive approaches may be needed to influence the smoking behaviour of adolescent smokers.

  14. The influence of socioeconomic status on the hemoglobin level and anthropometry of sickle cell anemia patients in steady state at the Lagos University Teaching Hospital.

    Science.gov (United States)

    Animasahun, B A; Temiye, E O; Ogunkunle, O O; Izuora, A N; Njokanma, O F

    2011-01-01

    Sickle cell anemia (SCA) has multisystemic manifestations and is associated with severe morbidity and high mortality. It commonly affects growth leading to wasting and stunting. This study aimed to determine the influence of socioeconomic status on the nutritional status using anthropometric measurements and steady-state hemoglobin, of children with homozygous SCA, aged 1 year to 10 years in steady state at the Lagos University Teaching Hospital. This is a cross-sectional study involving 100 children with SCA and 100 age-, sex-, and social class-matched controls that fulfilled the inclusion criteria. Social class was assessed using educational attainment and occupation of parents. Hemoglobin concentration was determined using the oxy-hemoglobin method. This study demonstrated a significantly lower mean weight and weight-for-height in the SCA patients than those of controls (P hemoglobin concentration were observed from social class 1 to 4; this was statistically significant in controls (P = 0.00) but not in subjects (P > 0.1). However, SCA patients had significantly lower values than controls in each of the social classes. Poor socioeconomic status has an adverse effect on the nutritional status and hemoglobin of SCA patients.

  15. Knowledge and Acceptability of Human Papillomavirus Vaccination among Women Attending the Gynaecological Outpatient Clinics of a University Teaching Hospital in Lagos, Nigeria.

    Science.gov (United States)

    Okunade, Kehinde S; Sunmonu, Oyebola; Osanyin, Gbemisola E; Oluwole, Ayodeji A

    2017-01-01

    This study was aimed at determining the knowledge and acceptability of HPV vaccine among women attending the gynaecology clinics of the Lagos University Teaching Hospital (LUTH). This was a descriptive cross-sectional study involving 148 consecutively selected women attending the gynaecology clinic of LUTH. Relevant information was obtained from these women using an interviewer-administered questionnaire. The data was analysed and then presented by simple descriptive statistics using tables and charts. Chi-square statistics were used to test the association between the sociodemographical variables and acceptance of HPV vaccination. All significance values were reported at P < 0.05. The mean age of the respondents was 35.7 ± 9.7 years. The study showed that 36.5% of the respondents had heard about HPV infection while only 18.9% had knowledge about the existence of HPV vaccines. Overall, 81.8% of the respondents accepted that the vaccines could be administered to their teenage girls with the level of education of the mothers being the major determinant of their acceptability ( P = 0.013). Awareness of HPV infections and existence of HPV vaccines is low. However, the acceptance of HPV vaccines is generally high. Efforts should be made to increase the awareness about cervical cancer, its aetiologies, and prevention via HPV vaccination.

  16. Régimen climático y patrón espacial de las lluvias en la cuenca del Lago de Valencia, Venezuela

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    Edilberto Guevara Pérez

    2008-07-01

    Full Text Available El objetivo de la investigación es diagnosticar el régimen climático de la cuenca del lago de Valencia y determinar la densidad de la red pluviométrica mediante el análisis de distribución espacial de las lluvias, utilizando la información disponible en la región central (Aragua, Carabobo y Cojedes. La precipitación mensual muestra una distribución unimodal, con el máximo en agosto y el mínimo en marzo. En marzo la humedad relativa disminuye y la velocidad del viento aumenta, ocasionando mayor evaporación. La red pluviométrica debe estar constituida por no más de 18 estaciones pluviométricas, espaciadas a unos 14 km; sin embargo, para mejorar la confiabilidad de los datos, se recomienda prestar atención a la ubicación, instalación y operaciones de las estaciones.

  17. Acuerdos de pesca en los lagos de Tarapoto: Alternativa de gestión para los bienes comunes en la Amazonia colombiana

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    Catalina Trujillo Osorio

    2017-09-01

    Full Text Available Se presentan las experiencias de gestión de recursos pesqueros en resguardos indígenas del Amazonas colombiano y los resultados y limitaciones del proceso adelantado para la construcción de acuerdos comunitarios de pesca. Se usó la metodología de investigación-acción-participación respondiendo al objetivo de crear estrategias para contrarrestar los problemas de agotamiento del recurso pesquero de los lagos de Tarapoto en el resguardo Ticoya y consolidar estrategias propias para fortalecer la capacidad de gobernanza interna del recurso pesquero dentro del territorio indígena. Se encontró que los acuerdos de pesca actúan como instituciones que regulan y optimizan el uso de bienes comunes de libre acceso, y consolidan la capacidad de gobernanza en territorios indígenas. Se concluye que la consolidación de un sistema propio de gestión debe ir más allá del control del recurso, evidenciando los esfuerzos locales por adoptar sistemas de manejo alternativo que se integren al modo de vida indígena y a los modelos de producción tradicional.

  18. Knowledge and practice of prevention of mother-to-child transmission of HIV among traditional birth attendants in Lagos State, Nigeria.

    Science.gov (United States)

    Balogun, Mobolanle; Odeyemi, Kofo

    2010-04-29

    Traditional birth attendants (TBAs) assist most deliveries in Nigeria. Knowing and understanding all issues surrounding HIV/AIDS and Prevention of Mother-To-Child Transmission of HIV (PMTCT) can help them to protect themselves and others. This study aimed to assess the knowledge and practice of PMTCT amongst TBAs in Lagos, Nigeria. This was a cross-sectional survey. Multistage sampling method was used to select 108 registered TBAs in 2 local governments areas who were interviewed using a pre-tested questionnaire. All the respondents were aware of HIV but their awareness of PMTCT specifically was not as high. Only 8.3% of the respondents had good level of knowledge about HIV and PMTCT and up to 13% of them claimed to be able to cure HIV using native remedies. The practices of HIV counseling of patients and referral of patients for HIV testing were low and higher levels of knowledge positively influenced these practices significantly (p < 0.05). They were also deficient in certain measures to prevent infection of patients and themselves. Most of the TBAs did not have adequate knowledge and practice of PMTCT illustrating the need for periodic PMTCT training for TBAs.

  19. Correlations between psychopathology and self-reported quality of life among adolescents in youth correctional facilities in Lagos, Nigeria: A short report.

    Science.gov (United States)

    Atilola, Olayinka; Ola, Bolanle; Abiri, Gbonjubola; Adewuya, Abiodun O

    2018-02-01

    The relationship between psychopathology and quality of life (QoL) and well-being among young incarcerated offenders has hardly been explored. Our aim was to test the hypothesis that higher self-rated psychopathology would be associated with lower QoL among adolescents resident within youth correctional facilities in Lagos. Psychopathology was assessed using the Strength and Difficulty Questionnaire (SDQ), while QoL was measured by using the Paediatric Quality of Life. One hundred and sixty-five adolescents completed the study, mostly boys (n = 124; 75%) with a mean age of 14.3 ± 2.1 years. Nearly, a fifth (30, 18%) of respondents had abnormal total SDQ scores (≥17), suggestive of definite psychiatric disorder, while another 44 (27%) had highly probable psychopathology (total SDQ scores 15-16). There was strong negative correlation (r = -0.51, p psychopathology and QoL among these adolescents, it is plausible to suppose that treatment of mental health problems could have a positive impact on rehabilitation and reintegration. Given the rate of likely psychopathology, mental health screening within young offender institutions should be routine, and followed, as necessary with full assessment and resultant treatment. Copyright © 2017 John Wiley & Sons, Ltd. Copyright © 2017 John Wiley & Sons, Ltd.

  20. Violência contra pessoa idosa: representações sociais entre adolescentes do arquipélago de Fernando de Noronha-PE

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    Ludgleydson Fernandes de Araújo

    2012-04-01

    Full Text Available Este estudo objetivou identificar e verificar as representações sociais (RS da violência contra as pessoas idosas entre estudantes do Arquipélago de Fernando de Noronha-PE. A amostra foi composta por 100 estudantes de ambos os sexos, do ensino médio, com média de idade de 20,3 anos. Foram utilizados como instrumentos: entrevistas semiestruturadas e o Teste de Associação Livre de Palavras (TALP. As entrevistas foram categorizadas pela Análise de Conteúdo (Bardin, 2002 e a TALP pela técnica de redes semânticas (Reyes-Lagunes, 1993. Os dados obtidos no TALP revelaram RS atreladas à intolerância (100%, covardia (57,2%, desumano (40,7%, ignorância (25,7% e violência (10%. No que tange aos dados da entrevista as subcategorias mais significativas foram desrespeito, maus tratos, indignação e segurança. Conclui-se da necessidade de prevenção no âmbito informativo, bem como de conscientização da população com prioridade para detecção e prevenção de casos de violência contra os idosos.