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1

AVALIAÇÃO DE PROCEDÊNCIAS E PROGÊNIES DE LIQUIDAMBAR DA AMÉRICA CENTRAL, DO MÉXICO E DOS ESTADOS UNIDOS, EM AGUDOS, BRASIL  

Microsoft Academic Search

Foi instalado um teste de procedência e progênie de Liquidambar styraciflua L. em Agudos, SP, em solo de areia quartzosa. Os materiais genéticos foram fornecidos pelo Oxford Forestry Institute, incluindo doze procedências da Guatemala, Honduras, Nicarágua, México e dos Estados Unidos, sendo testados juntamente com uma testemunha local, com duas a dez progênies por procedência. Medições efetuadas dos quatro até

Jarbas Y. Shimizu; Ivana H. Z. Spir

2

'Possessed': Acute Confusional Migraine in an Adolescent, Prevented by Topiramate  

PubMed Central

Acute confusional migraine (ACM) is recognized as a rare, but highly disabling migraine equivalent, mostly reported in children and adolescents. Herein we describe the case of a 12-year-old girl admitted to hospital for an acute confusional state and severe psychomotor agitation, associated with a pulsating headache and nausea, which turned out to be a manifestation of ACM. The girl was discharged on topiramate prophylaxis, titrated up to 75 mg/die; no recurrence of confusional and/or headache episodes has been reported over the last 14 months to date. Due to the rarity of this clinical entity, only anecdotal reports about acute and prophylactic treatment of ACM are available in the literature. The case reported herein suggests that topiramate seems to be effective in ACM prophylaxis, although a longer observation period in our patient and more cases are needed to confirm any long-term clinical benefit.

Rota, Eugenia; Morelli, Nicola; Immovilli, Paolo; Mitri, Paola De; Magnifico, Fabiola; Terlizzi, Emilio; Mazza, Lucia; Sala, Barbara; Biasucci, Giacomo; Guidetti, Donata

2012-01-01

3

[Acute postoperative confusional syndrome in the elderly patient].  

PubMed

With the progressive aging of the population surgical candidates have more comorbidities resulting in a higher risk to develop postoperative complications. One of the most frequent postoperative complications in the elderly is acute confusional state or delirium, which may have devastating consequences: higher mortality, and risk of medical complications during admission and, a higher risk of functional decline, institutionalization, and cognitive impairment at discharge. For all these reasons and with the aim of optimising surgical procedures, it is essential to identify patients at risk of delirium in order to take appropriate preventive action and provide early treatment. In the present article we review the current evidence on the management of postoperative delirium in the elderly. PMID:22176651

Martínez-Velilla, Nicolás; Alonso Bouzón, Cristina; Ripa Zazpe, Cruz; Sánchez-Ostiz, Rafael

2011-12-15

4

Confusional State in HaNDL Syndrome: Case Report and Literature Review  

PubMed Central

The syndrome of transient headache and neurologic deficits with cerebrospinal fluid lymphocytosis (HaNDL syndrome) is a self-limited condition. Confusional states are uncommonly reported as a clinical manifestation of this syndrome. Here, I report a 76-year-old female who presented with headache, confusion, and agitation with a mild CSF lymphocytosis. Other workup to determine the cause of her altered mental status was otherwise negative. The literature available in the English language on HaNDL syndrome is reviewed, including its history, pathophysiology, possible associations with migraine and stroke, and previously reported cases of confusional states in this syndrome. While HaNDL syndrome has been a described entity since the 1980s, its pathophysiology has yet to be clearly defined.

Nelson, Sarah

2013-01-01

5

Probable dementia associated with Lewy body pathology as a cause of prolonged acute confusional state in a 79-year-old patient.  

PubMed

Differentiation of "dementia with Lewy body pathology" (DLB) and delirium may be problematic in some cases, due to some of their common clinical characteristics such as fluctuations and hallucinations. Longer duration of cognitive changes usually aids in DLB diagnosis. However, presentation of DLB with an abrupt onset as a prolonged confusional state and hallucinations is also, even if rarely, described. We report the case of an elderly patient with probable dementia with Lewy body pathology, presenting with a prolonged acute confusional state, in order to draw attention to its diagnostic difficulty and the importance of careful target-oriented anamnesis in such cases. This type of dementia should be included in the differential diagnosis of elderly patients presenting with otherwise unexplained prolonged acute confusional states. PMID:22842839

Bahat, Gulistan; Tufan, Fatih; Akin, Sibel; Erten, Nigun; Karan, Mehmet Akif

2012-04-01

6

[Confusional state and agitation].  

PubMed

Delirium is a neurologic emergency representative of 10% of the hospitalized patients. It is characterized by an acute and fluctuating change of consciousness and cognition. A strict procedure is necessary to treat quickly the responsible cause among the multiple possible ones. An associated agitation need a quick specific treatment. The treatment should prevent the risk factors, notably iatrogenic, especially in the elderly patients or with previous altered cognitive functions. PMID:11192967

Martinaud, O; Hannequin, D

2000-11-15

7

Contaminação de águas superficiais por agrotóxicos em função do uso do solo numa microbacia hidrográfica de Agudo, RS  

Microsoft Academic Search

This work was accomplished with the intention of quantifying the presence of pesticide molecules in surface waters of three landscape units (LU) with different usage configurations in the Agudo watershed of the State of Rio Grande do Sul, Brazil. Two semiautomatic water collectors were installed at the stream of each LU, from which samples were collected during rain over three

Edson C. Bortoluzzi; Danilo dos S. Rheinheimer; Celso S. Gonçalves; João B. R. Pellegrini; Renato Zanella; André C. C. Copetti

2006-01-01

8

EJERCICIO Y LA DETECCION DEL MAL AGUDO DE MONTA?A GRAVE  

PubMed Central

El Mal Agudo de Montaña (MAM) es un conjunto de síntomas inespecíficos padecidos por sujetos que ascienden rápidamente desde baja a alta altura sin adecuada aclimatación. Usualmente es autolimitado, pero las formas graves (edema pulmonar y cerebral) pueden causar la muerte. La hipoxemia exagerada en reposo está relacionada con el desarrollo de MAM pero su valor predictivo es limitado. Dado que el ejercicio en altura se acompaña de mayor hipoxemia y síntomas, postulamos el valor predictivo de un simple test de ejercicio para pronosticar MAM grave. Se estudió el valor predictivo de la saturación de oxígeno en reposo y ejercicio submáximo a 2 700m y 4 300m en 63 sujetos que ascendían al cerro Aconcagua (6 962m). Se consideró desaturación de oxígeno con ejercicio a una disminución >=5% respecto al reposo. Se utilizó la escala de Lake-Louise para establecer la presencia de MAM grave. 6 sujetos presentaron MAM grave (9.5%) y requirieron evacuación. La saturación de oxígeno en reposo a 2 700m no fue significativa para clasificar sujetos que luego desarrollaron MAM grave. Por el contrario, la asociación de desaturación durante el ejercicio a 2 700m más la saturación inapropiada en reposo a 4 300m fue significativa para clasificar a los sujetos que desarrollaron MAM grave con un valor predictivo positivo de 80% y un valor predictivo negativo del 97%. Nuestros resultados son relevantes para el montañismo y sugieren la adición de un simple test de ejercicio en la predicción del MAM grave.

Garofoli, Adrian; Montoya, Paola; Elias, Carlos; Benzo, Roberto

2012-01-01

9

EL ESTADO EN LOS MONTES DE MARIA  

Microsoft Academic Search

Se pretende en el presente trabajo, mostrar las carcatristicas que presenta el Estado en los Montes de María (1) (departamentos de Sucre y Bolívar, republica de Colombia), en el cual se resalta la naturaleza mafiosa y politiquera de un Estado que ya no existe como tal y que se ha convertido en feudos de la politiquería local. Igualmente, se hace

Daniel Menco Rivera

2009-01-01

10

Estados que requieren cobertura de los costos de estudios clínicos  

Cancer.gov

Una lista de búsqueda y el mapa de los estados de EE.UU. requieren que los planes de salud para pagar los costos de la atención del paciente asociados con ensayos clínicos. Las principales disposiciones se resumen.

11

H3+: superficies de energía potencial, estados y transiciones rovibracionales  

NASA Astrophysics Data System (ADS)

Hemos calculado varias superficies globales de energía potencial para el estado fundamental y excitados del sistema H3+ en más de ocho mil geometrías diferentes usando una base (9s 3p 1d)/[4s 3p 1d] en cada átomo de Hidrógeno y mediante un método de cálculo de interacción de configuraciones completa (FCI). Hemos ajustado las superficies a formas analíticas del tipo Aguado y Paniagua con un error promedio menor de 50 cm-1 y menor en el pozo de potencial del estado fundamental. Finalmente hemos calculado y analizado los niveles vibracionales para los dos estados electrónicos más bajos, siendo la desviación respecto de los mejores valores publicados, tanto experimentales como teóricos, de unos pocos números de onda.

Aguado, M. Paniagua Y. A.

12

Paleoenvironmental and paleoclimatic investigations on Isla de los Estados, Argentina  

NASA Astrophysics Data System (ADS)

The expedition in November-December 2005 to Isla de los Estados (Staten Island) off the southeastern tip of South America was a cooperative venture between Lund University (LU) and Stockholm University (SU) in Sweden and the CADIC-CONICET Institute in Ushuaia, Argentina. The aim of the expedition was threefold: (1) to extend the Swedish paleoclimatic "ATLANTIS"-project (Greenland, Iceland, Faroe Islands, Azores, Grenada, Tristan da Cunha; PI S Björck) to the southern part of the South American continent, (2) to connect earlier glacial and climate history reconstructions from the Antarctic Peninsula to equivalents north of the Drake Passage in southernmost South America, and (3) to complement paleo-information available from the Tierra del Fuego mainland with information from Isla de los Estados. Focus was on two areas in the northern and north-western part of the island, Bahía Colnett and Bahia Crossley. Detailed geomorphologic and stratigraphic mapping of glacial deposits were combined with sampling sediments for OSL dating. To reconstruct the paleoclimatic development of Isla de los Estados since the last ice retreat, four main peat bog/lake sites were cored and sampled. In addition, living trees of Nothofagus and old logs preserved in the peat were sampled for dendrochronological and dendroclimatological studies. Preliminary results show that the deglaciation of the study area occurred before 16500 cal yr BP. Detailed multi- proxy analyses of the four sequences are under way and first results will be presented.

Björck, S.; Fernandez, M.; Hjort, C.; Ljung, K.; Martinez, O.; Möller, P.; Ponce, F.; Rabassa, J.; Roig, F.; Unkel, I.; Wohlfarth, B.

2007-05-01

13

[Expression as used in journals to describe acute confusional states in intensive care patients].  

PubMed

The language of nursing contains many special expressions which are used daily to describe different care situations. The aim of this study is to identify what expressions are used in the patient records to describe the development of acute confusion (intensive care unit syndrom) among the patients in an intensive care unit, comparing different usages by nurses and doctors to interpret these expressions. Descriptions and opinions about the general condition, awareness and mental status of patients were collected from their records. Twelve of the commonest expressions were chosen, as well as words describing different stages in the development of acute confusion, and the nurses and doctors were requested to write down what the expressions signified to them. The results showed that the expressions most often used, like "restless" (disturbed) and "picky" have been variously interpreted. This may mean that the symptoms of acute confusion are not discovered in time, or that they go completely unnoticed, which will lead to delaying, or neglecting, the implementation of care measures designed to prevent the worsening of the symptoms. Recommendations for coping with this problem include the use of a shared medical mental status, or the adoption by nurses of a common definition of these special expressions. PMID:7941217

Anetth, G

1994-01-01

14

A confusional state associated with use of lanthanum carbonate in a dialysis patient: a case report.  

PubMed

A 75-year-old woman was admitted with febrile confusion and abdominal pain. She was taking medications that included lanthanum carbonate. Examination, biology, a cerebral scan, and a review of her medications could not explain the confusion. The plain film of the abdomen revealed multiple diffuse calcium-like deposits throughout the digestive tract. The plasma levels of lanthanum were higher than normal. The confusion resolved after discontinuation of the lanthanum carbonate. This case raises the problem of the potential role played by lanthanum tablet residue in the genesis or aggravation of diverticular flare-up and the problem of the potential permeability of the blood-brain barrier with lanthanum use in case of its digestive accumulation, leading to increased serum concentrations. PMID:19596740

Muller, Clotilde; Chantrel, Francois; Faller, Bernadette

2009-07-13

15

Patrones de migración México-Estados Unidos en los noventa: Datos de cuatro encuestas mexicanas  

Microsoft Academic Search

Este artículo analiza los patrones de migración internacional de los mexicanos, con destino a Estados Unidos, en los noventa, a partir de los datos que arrojan cuatro encuestas mexicanas. Este artículo se insiere en una discusión reciente en la literatura de migraciones sobre los supuestos cambios estructurales del patrón migratorio procedente de México y con destino a los Estados Unidos.

Cristóbal Mendoza

16

La emigración española a Estados Unidos: una aproximación desde los microdatos censales de 1910  

Microsoft Academic Search

Este artículo tiene como objetivo principal explorar las características demográficas y el efecto de la desigual distribución de efectivos por sexos en las pautas matrimoniales de los inmigrantes y segunda generación de españoles en Ybor City (Tampa, Florida, Estados Unidos) a principios de siglo XX. Ybor City, además de proporcionarnos detalles de la poco estudiada emigración a Estados Unidos, es

Albert Esteve Palós; Àngels Torrents i Rosés; Clara Cortina Trilla

2007-01-01

17

Los Estados Unidos y la República de Chile se unen para combatir el cáncer  

Cancer.gov

Una nueva alianza entre el Instituto Nacional del Cáncer de los Estados Unidos y el Ministerio de Salud de la República de Chile, tiene el propósito de acelerar el avance contra el cáncer en la población hispana en los Estados Unidos y en América Latina.

18

Modelos estocásticos de aprendizaje en ensayos de respuesta dicotómica y un número finito de estados absorbentes  

Microsoft Academic Search

En este trabajo se construye un modelo probabilístico para representar un proceso de aprendizaje en el contexto de los modelos de estado en la denominada teoría matemática del aprendizaje. El modelo in- cluye tanto el proceso de adquisición como el de olvido, así como el supuesto de que el proceso pue - de terminar en uno cualquiera de r estados.

Carmen Santisteban Requena

2000-01-01

19

71 FR 33759 - Announcement of Availability of Funds for Cooperative Agreement to the Fundación México-Estados...  

Federal Register 2010, 2011, 2012, 2013

...oacute]n M[eacute]xico-Estados Unidos para la Ciencia, A.C. (FUMEC...oacute]n M[eacute]xico-Estados Unidos para la Ciencia, A. C. (FUMEC...oacute]n M[eacute]xico-Estados Unidos para la Ciencia, A. C....

2006-06-12

20

Captura y Reconfiguración Cooptada del Estado en Guatemala, México y Colombia Análisis conceptual de las memorias de la Primera Discusión Internacional Sobre Captura y Reconfiguración Cooptada del Estado  

Microsoft Academic Search

La evidencia muestra que el narcotráfico es importante en el fortalecimiento de la corrupción de Guatemala, México y Colombia; por lo tanto, es problemático analizar de modo separado ambos fenómenos. Los hechos muestran también que las organizaciones narcotraficantes de los tres países han aprendido a regular la coerción del Estado. Este aprendizaje ha representado un salto que va desde la

Luis Jorge Garay-Salamanca; Isaac de León-Beltrán; Eduardo Salcedo-Albarán

2010-01-01

21

La red exterior de Puertos del Estado: Información oceanográfica en tiempo real. Puertos del Estado deep water network: Oceanographic information in real time  

Microsoft Academic Search

SUMMARY In the last 20 years, Puertos del Estado has settled a complex marine monitoring system that allows the access to real time oceanographic and meteorological information. One of the networks in this system is the deep water network with buoys deployed at open sea. The access to this information is completely free through the web pages where users can

Marta Alfonso; José Damián López; Isabel Ruiz; Enrique Álvarez; Nuevas Tecnologías

22

Patrones alimenticios y valoración del estado nutricional en población adulta atendida en la Atención Primaria  

Microsoft Academic Search

INTRODUCCIÓN: Los patrones alimenticios influyen en la salud del momento y pueden determinarla a largo plazo.\\u000aOBJETIVOS: Identificar los hábitos alimenticios y el estado nutricional de la población entre 18 y 44 años de edad atendida en un centro de atención primaria y estudiar los factores asociados.\\u000aTIPO DE ESTUDIO: Transversal.\\u000aEMPLAZAMIENTO: Área básica urbana.\\u000aSUJETOS: Muestra aleatoria de 201

Matilde González Solanellas; Marta Puig Soler; Ana Romagosa Perez-Portabella; Clàudia Caselles Montagut; Montserrat Grau Carod; Hegoi Segurola Gurrutxaga; Santiago Lancho Lancho; Edurne Zabaleta del Olmo

2009-01-01

23

CÁLCULO DEL VOLUMEN ESPECÍFICO DE LÍQUIDOS PUROS CON ECUACIONES DE ESTADO CÚBICAS  

Microsoft Academic Search

RESUMEN. En este trabajo se presenta una revisión de los cambios que se han producido en los últimos años en las ecuaciones de estado cúbicas de más amplia aceptación y se hace un estudio comparativo del cálculo del volumen específico de once líquidos puros por medio de cinco ecuaciones cúbicas: Van der Waals, Redlich-Kwong, Soave-Redlich-Kwong, Peng-Robinson y Valderrama-Patel- Teja .

BIBIAN HOYOS

24

El número de supervivientes de cáncer en Estados Unidos asciende a aproximadamente 12 millones  

Cancer.gov

El número de supervivientes de cáncer en Estados Unidos ascendió a 11,7 millones en 2007, de acuerdo a un informe publicado por los Centros para el Control y la Prevención de Enfermedades, CDC, y el Instituto Nacional del Cáncer, NCI, el cual forma parte de los Institutos Nacionales de la Salud. Hubo 3 millones de supervivientes de cáncer en 1971 y 9,8 millones en 2001.

25

HANSEN'S DISEASE AND REACTIONAL S TATES: PATIENT LIFE STORIES MAL DE H ANSEN Y ESTADO REACCIONAL: HISTÓRIA DE VIDA DE PERSONAS ACOMETIDAS  

Microsoft Academic Search

RESUMO: RESUMO: RESUMO: RESUMO: RESUMO: Trata-se de um estudo de natureza qualitativa com emprego do método de história de vida que objetivou descrever a interferência do estado reacional na história de vida das pessoas acometidas pela hanseníase. Foi realizada em 2006, numa unidade básica de saúde, no município do Rio de Janeiro. Foram entrevistados 13 clientes com estado reacional em

Miranda LF; Leão AMM; Kelly Cristina; Cateringer SangiI

26

Revisiting the Role Schoo l?Regents Played in the Educational Policy of Estado Novo (1930's-1950's)  

Microsoft Academic Search

Though approached in several texts about the organization of teaching activity during Estado Novo, the figure of the school ? regent has barely deserved specific treatment. It was not until recently that the first systematisation of quantitative data concerning their presence in the education system emerged, along with an attempt of analysis about the characteristics of this professional group, reaching

Paulo Guinote

27

COMPARACIÓN DE VARIOS MÉTODOS PARA LA REPRESENTACIÓN CARTOGRÁFICA DE INFORMACIÓN CLIMÁTICA EN ZONAS ALTAS DEL ESTADO LARA  

Microsoft Academic Search

Se compararon tres métodos cartográficos diferentes para la representación de aspectos climáticos (temperatura y precipitación) en zonas altas del estado Lara. Se usó conjuntamente A) Representación analógica (en papel), B) Mapas digitalizados de coberturas mediante el software para Sistema de Información Geográfica (SIG) ArcInfo y C) Modelos numéricos interpolados mediante software de aplicación geoestadística (SURFER), empleando el modelo de interpolación

Jorge López Márquez; Rigoberto Andressen

2001-01-01

28

IDENTIFICACIÓN BACTERIOLÓGICA DE LAS INFECCIONES RESPIRATORIAS EN LOS BECERROS Y SU SUSCEPTIBILIDAD ANTIMICROBIANA EN DOS FINCAS DEL ESTADO GUÁRICO, VENEZUELA  

Microsoft Academic Search

Un total de 50 muestras de hisopados nasales de becerros. con enfermedad respiratoria procedentes de dos fincas ubicadas en el estado Guárico. fueron analizados por estudios bacteriológicos. Los agentes bacterianos más frecuentes fueron Pasteurella multocida (28%), Streptococcus spp. hemolíticos (22%), Klebsiella pneumoniae (18%), Corynebacterium spp. (14%), Staphylococcus epidermidis (6%), Bacillus spp. (4%), Escherichia coli y Pseudomonas aeruginosa (2%). respectivamente. Se

Yuraima Pineda; Salin Mora; Jorge Santander

29

El comercio de servicios de enseñanza en el el tratado de libre comercio (TLC) con los Estados Unidos de América. Las implicaciones para la educación superior en Colombia  

Microsoft Academic Search

Desde la perspectiva del comercio internacional la prestación de servicios, en particular la de servicios públicos, ha sido un tema reciente. En el caso de la educación este tema se consideraba tradicionalmente como una actividad propia del Estado, asociada al concepto de servicio público. En la actualidad estos conceptos han cambiado y hoy se considera que la educación no sólo

Hernán Jaramillo Salazar; Marcela Anzola Gil

2005-01-01

30

Estado nutricional em zinco e teste de acuidade do paladar em crianças de baixa estatura familiar Zinc nutritional status and taste acuity test in familial short stature children  

Microsoft Academic Search

Objetivos: Avaliar o estado nutricional em zinco e a percepção do paladar (salgado, doce, ácido e amargo) em crianças de baixa estatura familiar. Métodos: Estudo transversal de 30 crianças sem sinais de puberdade, pacientes do ambulatório de crescimento da Universidade Federal de São Paulo. A ingestão dietética foi avaliada pelo método do Registro Alimentar. Para o teste de acuidade do

Andréa G. Marques; Luiz A. Lopes; Olga M. S. Amancio

31

COMPETITIVIDADE, ESPECIALIZAÇÃO E VANTAGEM COMPARATIVA DO ESTADO DE MATO GROSSO NO MERCADO INTERNACIONAL: UM ESTUDO DE INDICADORES DE COMÉRCIO EXTERIOR NO PERÍODO 1996- 2007  

Microsoft Academic Search

Este artigo identifica os grupos de produtos do estado de Mato Grosso que exibem vantagens competitivas no comércio exterior durante o período 1996-2007. Para tanto, com base em dados da Secretaria de Comércio Exterior do Ministério da Indústria e Comércio, estimam-se indicadores de Comércio Exterior, tais como VCR (Vantagens Comparativas Reveladas), ICSC (Índice de Contribuição ao Saldo da Balança Comercial)

Paula Luciana Silva; Benedito Dias Pereira; Alexandre Magno Faria; Gerson Rodrigues Silva; Arturo Zavala Zavala

2008-01-01

32

The Prince, the Captain and "The State": An Examination of the Mesquita Family Ownership of "O Estado de Sao Paulo" to 1969.  

ERIC Educational Resources Information Center

|Julio Mesquita joined the staff of "O Estado de Sao Paulo" in 1885 and became a director in 1891, when he also began his first term as a deputy of the Sao Paulo state assembly. Until his death in 1927, Mesquita guided the newspaper's growth in all respects--editorial, political, technological, and economic. Julio de Mesquita Filho assumed…

Etsinger, Jean

33

Petrogenesis of fertile mantle peridotites from the Monte del Estado massif (southwest Puerto Rico): a preserved section of Proto-Caribbean oceanic lithospheric mantle?  

NASA Astrophysics Data System (ADS)

The Monte del Estado massif is the largest and northernmost serpentinized peridotite belt in southwest Puerto Rico. It is mainly composed of spinel lherzolite and minor harzburgite with variable clinopyroxene modal abundances. Mineral and whole rock major and trace element compositions of peridotites coincide with those of fertile abyssal peridotites from mid ocean ridges. Peridotites lost 2-14 wt% of relative MgO and variable amounts of CaO by serpentinization and seafloor weathering. HREE contents in whole rock indicate that the Monte del Estado peridotites are residues after low to moderate degrees (2-15%) of fractional partial melting in the spinel stability field. However, very low LREE/HREE and MREE/HREE in clinopyroxene cannot be explained by melting models of a spinel lherzolite source and support that the Monte del Estado peridotites experienced initial low fractional melting degrees (~ 4%) in the garnet stability field. The relative enrichment of LREE in whole rock is not due to secondary processes but probably reflects the capture of percolating melt fractions along grain boundaries or as microinclusions in minerals, or the presence of exotic micro-phases in the mineral assemblage. We propose that the Monte del Estado peridotite belt represents a section of ancient Proto-Caribbean (Atlantic) lithospheric mantle originated by seafloor spreading between North and South America in the Late Jurassic-Early Cretaceous. This portion of oceanic lithospheric mantle was subsequently trapped in the forearc region of the Greater Antilles paleo-island arc generated by the northward subduction of the Caribbean plate beneath the Proto-Caribbean ocean. Finally, the Monte del Estado peridotites belt was emplaced in the Early Cretaceous probably as result of the change in subduction polarity of the Greater Antilles paleo-island arc without having been significantly modified by subduction processes.

Marchesi, Claudio; Jolly, Wayne T.; Lewis, John F.; Garrido, Carlos J.; Proenza, Joaquín. A.; Lidiak, Edward G.

2010-05-01

34

PRODUÇÃO E COMERCIALIZAÇÃO DA CASTANHA DO BRASIL (BERTHOLLETIA EXCELSA, H.B.K) NO ESTADO DO ACRE BRASIL, 1998-2006  

Microsoft Academic Search

A castanha do brasil (Bertholletia excelsa, H.B.K.), é uma planta nativa da Amazônia, sendo uma das mais importantes espécies de exploração extrativista. Suas amêndoas apresentam alto valor econômico, tornando-se uma das principais atividades econômicas na região amazônica. O presente estudo teve como objetivo fazer um levantamento da produção e comercialização da castanha-do-brasil no Estado do Acre, n o período de

Lilliane Martins; Zenobio Perelli Gouveia E Silva; Breno Carrillo Silveira

2008-01-01

35

Estudio de la fotoabsorción y fotoionización de la molécula de alta relevancia atmosférica no a través de los estados Rydberg con la metodología MQDO  

NASA Astrophysics Data System (ADS)

Los procesos de fotoionización son de una importancia fundamental [1] y encuentran aplicación en un gran número de contextos científicos: Astrofísica [2], química de las radiaciones, biología. Los investigadores de dichos campos, necesitan de valores de fiables de secciones eficaces para la fotoionización parcial, la Fotoabsorción, así como para los procesos de fotofragmentación en amplios intervalos espectrales, particularmente en estudios de modelización [3-5]. En este trabajo se ha centrado la atención sobre el oxido nítrico, que se ha considerado apropiado y relevante por varios motivos: por el trascendental papel que representa en la física y química de la alta atmosfera [6], aparte de por estar íntimamente relacionado con los problemas de contaminación. Los procesos de recombinación disociativa [7] del NO, donde los estados Rydberg se encuentran directamente implicados, son relevantes, por ejemplo, en las regiones E y F de la ionosfera [7]. En este trabajo se estudia la fotoionización del NO desde el estado fundamental con la versión molecular del método del orbital de defecto cuántico (MQDO). Para ello se calcula el diferencial de las fuerzas de oscilador parciales que constituyen los canales de fotoionización del NO desde el estado fundamental. La continuidad del diferencial de fuerza de oscilador calculada a través del umbral de fotoionización, esto es, en las regiones del espectro discreta y del continua, se adopta como criterio de calidad la escasez de datos comparativos [8].

Bustos, E.; Velasco, A. M.; Martín, I.; Lavín, C.

36

Records of environmental changes during the Holocene from Isla de los Estados (54.4°S), southeastern Tierra del Fuego  

NASA Astrophysics Data System (ADS)

Southernmost Patagonia, located at the relatively narrow passage between Antarctica and South America, is a highly sensitive region for recording meridional and zonal changes in the pattern of oceanic and atmospheric circulation. The island of Isla de los Estados, situated at 54.5°S, 64°W, east of Argentinean Tierra del Fuego, provides an exceptional possibility, to investigate terrestrial records of atmospheric conditions in an oceanic setting during the last deglaciation and the Holocene. Here we present geochemical and diatom analyses from 10 600 to c. 1500 cal BP of one sequence (LGB) with peat, lake sediments and lagoon deposits at the northern coast of the island, and a lake sediment sequence (CAS) 3 km further inland. The data comprise TC, TN, loss on ignition analyses and continuous XRF scanning as well as age-depth modeling based on AMS- 14C dating on both cores. Diatom analysis of the CAS record complements the geochemical proxies. During the Holocene, our two sites have been impacted by two different forcings: changes in the regional climate regime largely influenced by the varying strength and position of the Southern Hemisphere Westerlies (SHW), while relative sea-level changes affected the deposits of the coastal site. In concert with the onset of the Antarctic thermal optimum, our data suggest fairly warm conditions and the establishment of denser peat and forest vegetation on the island c. 10 600 cal BP. Between 8500 and 4500 cal BP geochemistry and diatoms from the CAS record indicate stronger Westerlies at this latitude, which means higher wind speed or higher storm frequency and more precipitation, resulting in more pronounced surface run-off. After 4500 cal BP, the geochemical proxies and large changes in diatom assemblages indicate a decrease in precipitation, weaker winds and possibly cooler conditions, probably as an effect of weaker SHW and/or a latitudinal shift. The depositional environment of CAS changed from gyttja to peat around 1000 cal BP. At LGB, the onset of gyttja sedimentation around 7900 cal BP shows that the former wet land with peat accumulation had become a lake with a fairly rapid sedimentation. The chemical data from LGB imply a gradually increasing marine influence, probably as an effect of both rising sea level and increased impact of storms and maximum high tides. After a marine high-stand during the mid-Holocene, the LGB site returned into a peat bog again around 3400 cal BP. Our data suggest that since then relative sea level first dropped back below present sea level followed by a rise to present day sea level.

Unkel, Ingmar; Fernandez, Marilen; Björck, Svante; Ljung, Karl; Wohlfarth, Barbara

2010-12-01

37

A EFICIÊNCIA DOS PROGRAMAS EDUCATIVOS IMPLEMENTADOS POR EMPRESAS E ORGÃOS GOVERNAMENTAIS COMO FORMA DE PREVENÇÃO AO IMPACTO AMBIENTAL CAUSADO PELO DESCARTE INCORRETO DAS EMBALAGENS DE AGROTÓXICOS EM CAMPOS GERAIS NO SUL DO ESTADO DE MINAS GERAIS  

Microsoft Academic Search

Este estudo atua com uma ferramenta de feedback quanto aos resultados obtidos com os programas educacionais em combate ao descarte incorreto de embalagens vazias no município de Campos Gerais no Sul do Estado de Minas Gerais. Os objetivos são mensurar a eficiência dos -programas educativos implementados por empresas e órgãos governamentais como forma de prevenção ao impacto ambiental causado pelo

Jairo Gustavo De Lima; Marcelo Marcio Romaniello; Cristhiane Oliveira Da Graca Amancio

2008-01-01

38

HIPERTENSÃO OCULAR E OPACIDADES CRISTALINIANAS SUBCAPSULARES ASSOCIADA AO TRATAMENTO DO ESTADO REACIONAL HANSÊNICO COM CORTICOTERAPIA ORAL Ocular hypertension and cataract related to the treatment of the reactional states in Hansen's disease with oral prednisone  

Microsoft Academic Search

RESUMO O objetivo deste trabalho foi determinar a freqüência de hipertensão ocular e de catarata em portadores de hanseníase em tratamento de estado reacional dos tipos I e II, associado ou não à neurite, com corticoterapia oral. A partir daí, selecionar, orientar e encaminhar os pacientes que apresentaram complicações oculares para propedêutica e tratamento oftalmológico adequados. Foi elaborado estudo descritivo

Monica Jeha Maakaroun; N. B. Vilela de Castro; Arthur Jeha; Maakaroun Vilela de Castro

39

El Estado de los Ecosistemas  

NSDL National Science Digital Library

The recent Millennium Ecosystem Assessment has illustrated that human actions have significantly transformed many of Earths ecosystems. The main findings describe how: humans changed ecosystems dramatically over the past 50 years, changes to ecosystem services may get worse in the next 50 years, global action at all levels can reverse the degradation, and how ecosystem degradation increases risks of sudden changes and reduces benefits for future generations.

ChristiÃÂán Samper (National Museum of Natural History of the Smithsonian Institution;)

2005-08-01

40

Reinserción laboral tras infarto agudo de miocardio (IAM): tratamiento rehabilitador frente a tratamiento convencional tras IAM  

Microsoft Academic Search

IntroductionAcute myocardial infarction (AMI) produces more morbidity-mortality than any other disease in developed countries. It affects the patient's quality of life and work situation, generating significant economic cost. Among the goals of cardiac rehabilitation are: to prolong the patient's life, reduce symptoms, improve physical function, promote good general state and facilitate the resumption of daily activity. The aim of this

N. Álvarez-Bandrés; M. Malillos-Torán; A. Domínguez-Aragó; C. Lapresta; R. Numancia-Andreu

2008-01-01

41

Multi-proxy analyses of a peat bog on Isla de los Estados, easternmost Tierra del Fuego: a unique record of the variable Southern Hemisphere Westerlies since the last deglaciation  

NASA Astrophysics Data System (ADS)

We have analyzed an almost 14,000 year old peat sequence on the island of Isla de los Estados (55° S, 64° W), east of Tierra del Fuego, in the core of the Southern Hemisphere Westerlies. A multitude of methods have been used: high resolution 14C dating; detailed lithologic descriptions including humification degree; loss on ignition; magnetic susceptibility; bulk density; pollen and spore analysis and determination of Aeolian sand influx. By combining proxies for wind and precipitation we have been able to reconstruct how the westerlies have varied over time in the Atlantic sector of the Southern Ocean. It shows that this westerly wind belt was most intense at the onset of the record, 13,600-13,200 cal BP, coinciding with the mid to late part of the Antarctic Cold Reversal, followed by a gradual decline. At 12,200 cal BP the westerlies seem to have shifted to a position south of Tierra del Fuego and this phase, the calmest and driest period on the island throughout the sequence, ended at 10,000 cal BP when the westerlies moved equatorward again. Since then the westerlies have been present but with a variable impact on the 55° S latitude of the Atlantic. Mostly conditions have been fairly similar to today, but occasionally with a wider or narrower and/or weaker or stronger wind belt. At 7200 cal BP wind intensity began to increase and between 4500 and 3500 cal BP these southern latitudes experienced a distinct wind and precipitation maximum, both in terms of perseverance and intensity. Our results show a both wide and strong wind belt, with possible niveo-aeolian activity in Tierra del Fuego in winter, and possibly creating milder summers around the Antarctic Peninsula. In the later part of the Holocene, expansion-contraction phases of the wind belt, especially in winter, seem to have been a common phenomenon.

Björck, Svante; Rundgren, Mats; Ljung, Karl; Unkel, Ingmar; Wallin, Åsa

2012-05-01

42

Proposta de recuperação florestal de uma área de pastagem no município de Agudos-SP com vista à apicultura  

Microsoft Academic Search

Human actions such as urbanization and agriculture are the main activities generating processes of environmental impacts, which have negative consequences such as forest fragmentation, biodiversity loss and extinction of local species. Diversification in plantations of tree species for forest restoration provides a catalyst for ecological succession and one of the main pollinators are bees. The objective of this work is

José Carlos de Deus; Lucas Bertacini Viegas; Kelly Cristina Tonello

43

Las Fuerzas Armadas y el Estado  

Microsoft Academic Search

La Argentina, como Nación, en el nuevo contexto internacional, de libre comercio y de interdependencia económica, no tiene aún una visión homogénea de su pasado. Cada corriente ideológica como así también cada grupo de interés, se inclina, inevitablemente, por aquellas personas o sucesos que sean afines con sus pensamientos, haciendo un análisis subjetivo del pasado para dar validez a su

Claudio Cuello

44

TAXONOMIA ZOOLÓGICA NO BRASIL: ESTADO DA ARTE  

Microsoft Academic Search

Brazil is a megadiverse developing country and the knowledge on the current situation of Brazilian taxonomy is a necessary step to establish future policies to deal with biodiversity. Certainly, the most important issue for the understanding of biodiversity is the installing capacity of taxonomists. In fact, little is known concerning the number of taxonomists, scientific production, and the problems faced

ANTONIO CARLOS MARQUES; CARLOS JOSÉ

45

Sobre el estado evolutivo de ? Pictoris  

NASA Astrophysics Data System (ADS)

Desde el descubrimiento de fuertes excesos infrarrojos en ? Pictoris, esta estrella ha sido muy estudiada y es considerada candidata a poseer un sistema planetario propio. ? Pic está rodeada de un disco asimétrico de polvo que se observa de canto y que esta vacío a distancias <= 40 AU. Esto se considera una fuerte evidencia en favor de la presencia de (al menos) un planeta gigante. Recientemente se han observado líneas de material circunestelar que se han interpretado como consecuencia de la caída de objetos cometarios sobre esta estrella. Recientemente se ha utilizado la existencia del disco de polvo para atribuir una edad corta (pre - secuencia principal) a ?Pic. Sin embargo, la evaporación de estos cometas provee suficiente polvo como para explicar la presencia del disco observado sin necesidad de edades cortas. En este trabajo mostramos que la comparación entre la tasa de impactos cometarios estimada en el Sistema Solar para diferentes etapas de su evolución y los datos observados en ? Pic indica edades avanzadas para ? Pic. Esta estimación debe tomarse con cautela ya que depende de la estructura de los sistemas planetarios. Además mostramos que, desde el punto de vista de la evolución estelar y con las incertezas presentes en la luminosidad y la temperatura efectiva, existe un continuo de edades posible para ? Pic. Sin embargo, empleando los datos provenientes de los flujos cometarios encontramos que una edad prolongada es consistente con ambos tratamientos.

Brunini, A.; Benvenuto, O. G.

46

55830 Temsirolimus Amendment 4  

Center for Drug Evaluation (CDER)

Text Version... diarrhea, constipation, mucosal inflammation, stomatitis, mental impairment, confusional ... j)(1)(A)(i) of the Public Health Service Act (PHS Act ... More results from www.fda.gov/downloads/drugs/developmentapprovalprocess

47

Acute encephalopathies  

Microsoft Academic Search

In daily hospital activity a frequent observation is that of patients in conditions of acute global suffering of the central\\u000a nervous system due to a primary cause or symptomatic of other diseases. This condition shows an alteration of the state of\\u000a consciousness, which involves three possible semeiologic manifestations: delirium (acute confusional state), acute confusional\\u000a state associated with psychomotor underactivity and

M. Guidotti; L. Chiveri; M. Mauri

2006-01-01

48

Efeitos dos Exercícios Físicos Sobre o Edema Inflamatório Agudo em Ratos Wistar Effects of Physical Exercise on the Acute Inflammatory Edema in Wistar Rats  

Microsoft Academic Search

Physical exercises have been associated with important and varied benefits to health, as those related to the specific and non-specific immune function, stressing the inflammatory process in the latter. However, depending on their type, intensity, frequency and duration, exercises can also cause certain harm to the organism. Actually, previous research has demonstrated that the hypernociception of inflammatory origin in rats

Ademir da Costa Lana; Célia Aparecida Paulino; Ivair Donizeti Gonçalves

49

Correlación entre la corriente interlobular inducida y estados de depresión  

Microsoft Academic Search

A non-invasive technique known as transcranial magnetic stimulation (TMS), that uses electromagnetic fields to induce electric currents in the brain, that could alter brain activity, is being applied since 1985. Initially, such technique (TMS) was used in a diagnostic procedure to dimension excitability and connectivity of nervous tissue, and to map brain functions, but due to its capacity of modulating

Antonino Caralli D'Ambrosio; Cesar Seijas; Sergio Villazana; Francisco Arteaga; Andreau Lenox

50

La FDA investiga Brote de Hepatitis A en varios estados ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... FDA, los Centros para el Control y la Prevención de Enfermedades (CDC) y de las autoridades de salud locales y estatales acerca de un brote de ... More results from www.fda.gov/food/recallsoutbreaksemergencies/outbreaks

51

Múltiples estados de desorden en el etanol sólido  

NASA Astrophysics Data System (ADS)

El diagrama de fases del etanol por debajo de los 169 K será presentado. Se mostrará que el etanol puede solidificarse en tres fases con diversos niveles de desorden,(como un vidrio(G), como un vidrio orientacional (OG) y como un cristal de fase rotora (RP)) además de en una fase totalmente cristalina. Las estructuras de estas tres fases serán presentadas tal y como se deducen a partir de diversas medidas de difracción de neutrones al igual que las proporciones de los isómeros de dicho material en las fases desordenadas y se compararán con los resultados de la fase cristalina y del líquido superenfriado. Igualmente diversas medidas sobre su dinámica serán presentadas, tanto de dispersión de neutrones, como de capacidad calorífica y de medidas dieléctricas y comparadas con modelos teóricos y simulaciones para tratar de explicar los procesos de relajación observados y las transiciones entre las diversas fases.

Fernández-Perea, R.

52

Comercio justo, Estado y sociedad civil. Una aproximación crítica  

Microsoft Academic Search

In this paper, we propose to analyze the case of a textile productive chain, framed in fair trade, it takes place in the town of Capilla del Monte, Cordoba, Argentina. This iniciative brings together a large number of workers in the context of domestic and handmade work processes. Under the guidelines of local economic development, the textile productive chain was

Susana R. Presta

2009-01-01

53

Contaminación del aire en Santiago: Estado actual y soluciones  

Microsoft Academic Search

En el presente trabajo se discute el problema de la contaminación atmosférica en Santiago y de los esfuerzos en marcha para su solución, representados formalmente por el Plan de Prevención y Descontaminación de la Región Metropolitana (PPDA). A modo de introducción se definen términos y conceptos utilizados en el PPDA, los cuales son de uso frecuente en el área de

Raúl ORyan; Luis Larraguibel

2000-01-01

54

ACRIDOIDEOS (INSECTA: ORTHOPTERA) DEL ESTADO DE GUANAJUATO, MÉXICO  

Microsoft Academic Search

Thirty eight species were determined in 28 genera of the superfamily Acridoidea in the state of Guanajuato. Gomphocerinae belonging to Acrididae, showed the greatest number of genera and species with 11 and 14 respectively; next came Oedipodinae, with six genera and eigth species, and finally Melanoplinae with three genera and four species. Melanoplus differentilis was the most abundant species, constituting

Manuel Darío SALAS-ARAIZA; Eduardo SALAZAR-SOLIS; Genaro MONTESINOS-SILVA

55

Estado e Economia no Institucionalismo de Douglass North  

Microsoft Academic Search

Douglass North's ideas, notwithstanding his 1993's Nobel award are still barely known among Brazilian economists. This unawareness is deplorable not only because the relevance of his ideas to current development theory but also for his new (and rather heterodox) contribution to the analysis of the modern State's economic role. This paper presents a synthesis of North's discussion concerning the institutional

RONALDO FIANI

56

Servicio de Salud Pública de los Estados Unidos  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... “Escherichia coli enterohemorrágica” (EHEC, por sus siglas en ingles) es la E. coli que causa la colitis hemorrágica, es decir, hemorragia intestinal. ... More results from www.fda.gov/downloads/food/guidanceregulation

57

La Economía y la Reinvención del Estado Mexicano  

Microsoft Academic Search

For the last few years, the importance of the role of the state in formulating and implementing economic policies to achieve growth and development of society, broadly speaking, both state and society have undergone a lot of changes and transformations. In Mexico, the so called neoliberal model of state has been impossed over a former protectionist, statist and populist regimes

José G. Vargas

58

Hacia una teoría sistémica del 'Estado parasitario': El caso Argentino  

Microsoft Academic Search

Argentina has more than twice the total debt of India whilst the latter has twenty-eight times more population in roughly equivalent territories. It was once a prosperous haven for poor Europeans, with one of the highest per capita incomes in the world, but now half its population is underneath the poverty line. It has perpetrated the greatest default in world

Carlos Escudé

2004-01-01

59

Histórias infantis: um recurso para a compreensão dos estados mentais  

Microsoft Academic Search

Children's storybooks: a resource to the understanding of mental states. This study examined a sample of 100 national children's storybooks directed to pre-school children aged four to six years to identify words\\/ utterances that denote mental states according to three views of analysis: via words and expressions in the text; via the pictures; and via presence of irony or false

Marisa Cosenza Rodrigues; Jacqueline Silva Rubac

2008-01-01

60

Acute encephalopathies.  

PubMed

In daily hospital activity a frequent observation is that of patients in conditions of acute global suffering of the central nervous system due to a primary cause or symptomatic of other diseases. This condition shows an alteration of the state of consciousness, which involves three possible semeiologic manifestations: delirium (acute confusional state), acute confusional state associated with psychomotor underactivity and coma. The possible causes of an acute encephalopathy (AE) are: metabolic, iatrogenic and toxic, infective, primary neurologic, surgery-related and others. Diagnostic-therapeutic routes to be followed by emergency room doctors and neurologists dealing with AE are defined. PMID:16708187

Guidotti, M; Chiveri, L; Mauri, M

2006-03-01

61

Dissociated local arousal states underlying essential clinical features of non-rapid eye movement arousal parasomnia: an intracerebral stereo-electroencephalographic study.  

PubMed

Sleep has been shown to be a global phenomenon in which the presence of local processes of both activation and deactivation are finely orchestrated. Dysfunctional and independent action of the systems involved in non-rapid eye movement (NREM) sleep and wakefulness is deemed to be at the basis of arousal parasomnias. We show, in a patient with confusional arousals, persistence of sleep in the hippocampal and frontal associative cortices in contrast to the presence of awakening in the motor, cingulate, insular, amygdalar and temporopolar cortices. The clinical features of the confusional arousals in this patient are highly consistent with a dysfunctional coexistence of local cortical arousal and local cortical sleep. PMID:22329925

Terzaghi, Michele; Sartori, Ivana; Tassi, Laura; Rustioni, Valter; Proserpio, Paola; Lorusso, Giorgio; Manni, Raffaele; Nobili, Lino

2012-02-14

62

Cerebral thiamine-dependent enzyme changes in experimental Wernicke's encephalopathy  

Microsoft Academic Search

Wernicke's encephalopathy in humans is characterized by ophthalmoplegia, ataxia and a global confusional state. Although most commonly associated with chronic alcoholism, the disease is also encountered in cases of hyperemesis gravidarum, gastrointestinal carcinoma, anorexia nervosa, and other conditions associated with grossly compromised nutritional status. The therapeutic effect of thiamine in Wernicke's encephalopathy was first reported in the late 1930s and

Roger F. Butterworth

1986-01-01

63

¿CIENCIA DEL TURISMO O CÍNICO PASATIEMPO ACADÉMICO?  

Microsoft Academic Search

Los términos y las palabras son funcionales a la vida social, permiten que los hombres puedan compartir marcos de referencia en forma coherente. Sin embargo, en ocasiones la permeabilidad o el uso ideológico de los mismos llevan a confusiones o a callejones sin salida. El siguiente artículo crítico ha sido escrito por medio de diferentes trabajos realizados durante 4 años

Maximiliano Korstanje; Francisco Muñoz de Escalona

2011-01-01

64

Electroencephalography  

Microsoft Academic Search

Notwithstanding recent advances in neuroimaging, EEG remains a major technique for investigation of the brain. Its main applications are in assessment of cerebral function rather than for detecting structural abnormalities. The principal clinical applications are in epilepsy, states of altered consciousness including postanoxic and traumatic coma, the parasomnias, dementias, toxic confusional states, cerebral infections, and various other encephalopathies. Abnormalities in

C D Binnie; P F Prior

1994-01-01

65

Neurological syndromes of brucellosis.  

PubMed Central

Eleven patients with brucellosis presented with neurological features closely simulating transient ischaemic attacks, cerebral infarction, acute confusional state, motor neuron disease, progressive multisystem degeneration, polyradiculoneuropathy, neuralgic amyotrophy, sciatica and cauda equina syndrome. Most patients improved quickly after adequate antibiotic treatment but chronic cases responded poorly. These protean neurological manifestations of brucellosis indicate that the underlying pathological mechanisms are diverse.

Bahemuka, M; Shemena, A R; Panayiotopoulos, C P; al-Aska, A K; Obeid, T; Daif, A K

1988-01-01

66

Focal retrograde amnesia for autobiographical events following cerebral vasculitis: A connectionist account  

Microsoft Academic Search

We describe a patient who developed a focal retrograde amnesia in the absence of any measurable anterograde memory deficit following recovery from an acute confusional state arising from a primary cerebral vasculitis. Brain imaging revealed bilateral frontal and parietal atrophic changes and a well circumscribed lesion of the left superior temporal gyrus. The patient has normal Intellect and well above

J. J. Evans; E. K. Breen; N. Antoun; J. R. Hodges

1996-01-01

67

Intermediate doses of melphalan and dexamethasone are better than vincristine, adriamycin, and dexamethasone (VAD) and polychemotherapy for the treatment of primary plasma cell leukemia  

Microsoft Academic Search

Primary plasma cell leukemia (PPCL) is a rare form of disease accounting for 1-2% of myelomas. Between September 1990 and November 2000, among 540 patients with myeloma studied, 24 fulfilled the criteria of PPCL (4.4%). We found high frequencies of female patients (62%), Bence Jones proteinuria (79%), anemia (88%), bleeding (54%), confusional syndrome (42%), weight loss (71%), hepatomegaly (25%), splenomegaly

J. Vela-Ojeda; M. García-Ruiz Esparza; A. Rosas-Cabral; Y. Padilla-González; J. García-Chávez; F. Tripp-Villanueva; E. Sánchez-Cortés; M. Ayala-Sánchez; L. García-León; L. Montiel-Cervantes; M. Rubio-Borja

2002-01-01

68

Body-image Pathology: Koro, the shrinking-penis syndrome in transcultural sexology  

Microsoft Academic Search

Nineteen years after he had first been known in the clinic as the father of a boy with hypopituitarism, a man requested an appointment for his own problem of penis shrinkage. In a state of confusional panic, he hoped that the same hormonal treatment that pubertalised his son would regenerate his penis in size and potency. He obtained what he

John Money; Charles Annecillo

1987-01-01

69

Sexual behaviors during sleep associated with polysomnographically confirmed parasomnia overlap disorder  

Microsoft Academic Search

Parasomnia overlap disorder (POD) refers to a sleep disorder characterized by the association of REM sleep behavior disorder (RBD) with NREM sleep parasomnia in the same patient. Sexual behaviors during sleep (SBS) can include most wakeful sexual activities and are classified in the ICSD-2 as a variant of confusional arousals and sleepwalking, both NREM parasomnias. A case of SBS associated

Alessandro Cicolin; Antonella Tribolo; Alessandra Giordano; Elisabetta Chiarot; Elena Peila; Anna Terreni; Caterina Bucca; Roberto Mutani

2011-01-01

70

The prevalence of psychiatric morbidity among people aged 85 and over living at home  

Microsoft Academic Search

A survey of all people aged 85 years and over, living in an inner London borough, was carried out. In 1987, 662 people who lived at home were traced from family practitioner committee records and interviewed. The General Health Questionnaire was administered to measure psychiatric morbidity (after excluding people with evidence of disorientation or confusional states). 27% of respondents were

A. Bowling; London Schoo

1990-01-01

71

Primary angioplasty vs. fibrinolysis in very old patients with acute myocardial infarction: TRIANA (TRatamiento del Infarto Agudo de miocardio eN Ancianos) randomized trial and pooled analysis with previous studies  

PubMed Central

Aims To compare primary percutaneous coronary intervention (pPCI) and fibrinolysis in very old patients with ST-segment elevation myocardial infarction (STEMI), in whom head-to-head comparisons between both strategies are scarce. Methods and results Patients ?75 years old with STEMI <6 h were randomized to pPCI or fibrinolysis. The primary endpoint was a composite of all-cause mortality, re-infarction, or disabling stroke at 30 days. The trial was prematurely stopped due to slow recruitment after enroling 266 patients (134 allocated to pPCI and 132 to fibrinolysis). Both groups were well balanced in baseline characteristics. Mean age was 81 years. The primary endpoint was reached in 25 patients in the pPCI group (18.9%) and 34 (25.4%) in the fibrinolysis arm [odds ratio (OR), 0.69; 95% confidence interval (CI) 0.38–1.23; P = 0.21]. Similarly, non-significant reductions were found in death (13.6 vs. 17.2%, P = 0.43), re-infarction (5.3 vs. 8.2%, P = 0.35), or disabling stroke (0.8 vs. 3.0%, P = 0.18). Recurrent ischaemia was less common in pPCI-treated patients (0.8 vs. 9.7%, P< 0.001). No differences were found in major bleeds. A pooled analysis with the two previous reperfusion trials performed in older patients showed an advantage of pPCI over fibrinolysis in reducing death, re-infarction, or stroke at 30 days (OR, 0.64; 95% CI 0.45–0.91). Conclusion Primary PCI seems to be the best reperfusion therapy for STEMI even for the oldest patients. Early contemporary fibrinolytic therapy may be a safe alternative to pPCI in the elderly when this is not available. Clinicaltrials.gov # NCT00257309.

Bueno, Hector; Betriu, Amadeo; Heras, Magda; Alonso, Joaquin J.; Cequier, Angel; Garcia, Eulogio J.; Lopez-Sendon, Jose L.; Macaya, Carlos; Hernandez-Antolin, Rosana; Bueno, Hector; Hernandez-Antolin, Rosana; Alonso, Joaquin J.; Betriu, Amadeo; Cequier, Angel; Garcia, Eulogio J.; Heras, Magda; Lopez-Sendon, Jose L.; Macaya, Carlos; Azpitarte, Jose; Sanz, Gines; Chamorro, Angel; Lopez-Palop, Ramon; Sionis, Alex; Aros, Fernando; Garcia-Fernandez, Eulogio; Rubio, Rafael; Hernandez, Felipe; Tascon, Juan Carlos; Moreu, Jose; Betriu, Amadeu; Heras, Magda; Hernandez-Antolin, Rosana; Fernandez-Ortiz, Antonio; Moris, Cesar; de Posada, Ignacio Sanchez; Cequier, Angel; Esplugas, Enrique; Melgares, Rafael; Bosa, Francisco; Garcia-Gonzalez, Martin Jesus; Lezaun, Roman; Carmona, Jose Ramon; Vazquez, Jose Manuel; Castro-Beiras, Alfonso; Picart, Joan Garcia; de Rozas, Jose Dominguez; Fernandez, Jose Diaz; Vazquez, Felipe Fernandez; Alonso, Norberto; Zueco, Jose Javier; San Jose, Jose Maria; San Roman, Alberto; Hernandez, Carolina; Garcia, Jose Maria Hernandez; Alcantara, Angel Garcia; Bethencourt, Armando; Fiol, Miquel; Mancisidor, Xabier; Mancisidor, Xabier; Ruiz, Rafael; Hidalgo, Rafael; Sobrino, Nicolas; Maqueda, Isidoro Gonzalez; Torres, Alfonso; Aros, Fernando; Amaro, Antonio; Jaquet, Michel

2011-01-01

72

Efeito Agudo de uma Sessão de Hidroginástica sobre a Resposta da Pressão Arterial em Gestantes não Hipertensas Acute Effect of an Aquagym Session on Blood Pressure Response in Non-Hypertensive Pregnant Women  

Microsoft Academic Search

Background: There are few studies analyzing acute cardiovascular response after exercise during pregnancy. Objective: To measure blood pressure response in non- hypertensive pregnant women after an aqua-gym session. Methods: The sample consisted of eight non-hypertensive and physically active pregnant women (21-36 weeks). Experimental (EXP) and Control (CON) data were collected on two days, with blood pressure was measured by auscultation.

Bethânia Tamara Coelho; Marcos Doederlein Polito

73

El glutatión y las vitaminas C y E protegen en el daño renal agudo inducido por cromo en la rata Glutathione, C and E vitamins protect on chromium-induced acute renal damage in rat  

Microsoft Academic Search

In Wistar female adult rats acute renal failure (ARF) was induced with a single dose of potassium chromate (20 mg\\/kg, subcu- taneous). Four groups, control group and three chromium treated-groups, one of them was received vitamins C (200 mg\\/kg) and vitamin E (alfa-tocopherol, 100 mg\\/kg) and another glutathione (50 mg\\/kg) per os. In urine and blood samples obtained on days

2009-01-01

74

Lenguaje, nación y Estado: pasado y presente Language, Nation, and State: Past and Present  

Microsoft Academic Search

The three elements: language, nation and state have been interrelated. Three types of interrelations can be distinguished: 1) language-nation- state, 2) nation-language and state, 3) state-nation and language. These types have been active especially in Europe since the 19 th century, and in countries and regions following European example, including present cases of nationalism and ethno-regionalism. In recent decades language

ROMAN SZUL

75

CONTROL QUÍMICO DE MALEZAS EN FRIJOL (Phaseolus vulgaris L.) EN EL ESTADO DE VERACRUZ 1  

Microsoft Academic Search

Chemical weed control in dry beans (Phaseolus vulgaris L.) in the state of Veracruz México. Two experi- ments wiht herbicides were carried out during the Fall-Winter seasons of 1990-91 and 1991-92. The objective was to determi- ne the best preemergence and\\/or postemergence herbicide treatments for controlling the dominant weed species in the residual moisture growing sistem of beans. The experiments

Valentín A. Esquivel; Octavio Cano; Ernesto López

76

El comercio de los productos transgénicos: el estado del debate internacional  

Microsoft Academic Search

Los productos transgénicos mezclan aspectos contradictorios. La manipulación genética de cultivos permite desarrollar tanto productos con toxinas insecticidas, disminuyendo el uso de defensivos agrícolas que pueden dañar el medio ambiente, como alimentos con propiedades vitamínicas y proteicas, que pueden mejorar los indicadores sociales en los países en desa- rrollo. Por otra parte, se han abierto interrogantes acerca de los posibles

María Angélica Larach; División de Comercio Internacional

77

Radioinmunoterapia en los linfomas no Hodgkin: desarrollo histórico y estado actual  

Microsoft Academic Search

Radioimmunotherapy treatment for lymphoma is a novel targeted therapeutic approach. Several years of development of radioimmunotherapeutic compounds came to fruition in February of 2002 when 90Y-ibritumomab tiuxetan (Zevalin (™), Y2B8) was approved in the USA and later in Europe, for the treatment of relapsed or refractory, low grade or transformed B-cell lymphoma in the USA. 90Y-ibritumomab tiuxetan utilizes a monoclonal

C. Emmanouilides

2006-01-01

78

AVALIAÇÃO DA EFICÁCIA DE PROGRAMA DE FORMAÇÃO DE EMPREENDEDORES E LIDERANÇAS RURAIS NO ESTADO DO PARANÁ  

Microsoft Academic Search

Este artigo apresenta os resultados de avaliações da eficácia do Programa Empreendedor Rural – PER – em alcançar seus objetivos. O PER é um programa de educação rural para produtores e trabalhadores rurais desenvolvido no Paraná e executado pelo Senar\\/PR e Sebrae\\/PR que visa elevar os estoques de capital humano e social no meio rural. O programa adota o construtivismo

Vania Di Addario Guimaraes; Fernando Curi Peres; Luis Alberto Ambrosio; Jose Roberto Fernandes Canziani

2008-01-01

79

Prevalencia de caries y estado periodontal de los niños y adolescentes de Navarra (2002)  

Microsoft Academic Search

Background. Surveys of caries prevalence and dental treatment have been conducted in Navarra since 1987, before PADI was implemented (1991). Objectives: Investigate the dental and perio- dontal health status of children and adolescents of Navarra in 2002. Methods: Epidemiological survey of a representative sample (n 1,566) of 1º,3º,6º EP and 2º ESO schoolchildren. Clinical examinations were conducted by calibrated examiners

Ángel Doria-Bajo; Cortés Martinicorena; Francisco Javier

80

One Language for the United States? (Un Idioma para Los Estados Unidos?) CSG Backgrounder.  

ERIC Educational Resources Information Center

The United States has become increasingly multilingual in recent decades, and while English is the most commonly spoken language, almost 11 percent of Americans prefer to speak another language at home. Bilingualism is promoted by governmental units at the federal, state, and local levels through a variety of programs, particularly in education…

Ford, Mark L.

81

Conductas purgativas y estado nutricional en anorexia nerviosa y bulimia nerviosa  

Microsoft Academic Search

Aims: The aim of the study was to investigate whether the use of purgative methods in patients with eating di- sorders (anorexia nervosa (AN) and bulimia nervosa (BN)) could be capable of producing changes in the nu- tritional status of the patients. Setting and Patients: The group under study was com- posed of 184 female eating disordered outpatients. One hundred

F. J. Vaz; A. García-Herráiz; B. López-Vinuesa; M. Monge; A. Fernández-Gil; J. A. Guisado

82

ESTRUCTURA PRODUCTIVA Y DESEQUILIBRIO EXTERNO EN CARNE DE VACUNO ENTRE MÉXICO Y ESTADOS UNIDOS  

Microsoft Academic Search

The problem to investigate is the permanent disequilibrium of Mexican commercial balance of cattle heads and meat regarding United States during the period 1993-2007. The objective is shows that the inequality productive structure on cattle heads and meat that exists between Mexico and American Union, through commercial exchange of those products impact the commercial balance. The methodology used was the

Luis Alberto Araujo Andrade; Eraclio del Jesus Cruz Pacheco

2010-01-01

83

EMBARCAÇÕES, ARTES E PROCEDIMENTOS DA PESCA ARTESANAL NO LITORAL SUL DO ESTADO DO PARANÁ, BRASIL  

Microsoft Academic Search

Boats, gears and procedures of the artisanal fishing at the southern coast of Paraná state, Brazil This work describes boats and gears employed by artisanal fishermen of the Southern Paraná coast, Brazil, and analyses the fishing procedures performed at the shallow continental shelf. Seven types of boats and 7 main types of gears were identified. Differences between the fisherman communities

PAULO DE TARSO CHAVES; MAURÍCIO DE CASTRO ROBERT

84

Monitoramento de radioatividade ambiental no estado de Sao Paulo. (Environmental radiation monitoring in Sao Paulo state).  

National Technical Information Service (NTIS)

The results of environmental radiation monitoring that CETESB (Technological Company of Environmental Sanitation of Sao Paulo) does in influence areas of radioactive materials store of Nuclemon Minero-Quimica S.A. in the municipality of Itu, Sao Paulo Sta...

E. G. Agudo A. M. Albuquerque N. V. Vasconcellos

1991-01-01

85

Características asociadas al subregistro de muerte en niños del estado de Guerrero, México  

Microsoft Academic Search

Objective. To estimate the frequency of underregis- tered children deaths in rural areas and to identify associ- ated characteristics. Material and methods. The study was conducted in three stages. In the first, three strata of communities were formed according to the number of in- habitants; then a representative number of villages was ran- domly selected from each stratum. A census

PATRICIA TOMÉ; HORTENSIA REYES; CÉSAR PIÑA; LETICIA RODRÍGUEZ; GONZALO GUTIÉRREZ

1997-01-01

86

Inconsistencias en la seguridad nacional de Vicente Fox y la relacion con Estados Unidos  

Microsoft Academic Search

The central argument of this dissertation is to examine how the political regime which emerged from the Mexican Revolution confused its own security with the security of the Nation-State between 1928 and the year 2000. Nevertheless, that was the type of relationship supported by Washington because it helped to preserve its own interests of stability and security in its Southern

Abelardo Rodriguez Sumano

2007-01-01

87

¿Quién habla en la oreja de Einstein? Arte indígena contemporáneo en el estado de Chiapas (México)  

Microsoft Academic Search

This article analyzes the current artistic production of the indigenous peoples of Chiapas, combining a sociological focus and an aesthetic perspective. The Zapatista uprising of 1994, transformed the urbanistic structure and social fabric of San Cristóbal de Las Casas in such a way that, today, the idealized indigenous world for tourism does not compare to the real indigenous world of

Luca D'Ascia

88

Economía Urbana y Calidad de Vida. Una revisión del estado del conocimiento en España  

Microsoft Academic Search

Quality of life is increasingly becoming a concept researched empirically and theoretically in the field of economics. In urban economics in particular, this increasing interest stems mainly from the fact that quality of life affects urban competitiveness and urban growth, research shows that when households and businesses decide where to locate, quality of life considerations can play a very important

Vicente Royuela; Diona Lambiri; Bianca Biagi

2006-01-01

89

AVALIAÇÃO DE ESPÉCIES FLORESTAIS EM ÁREA DE MATA NO ESTADO DE RORAIMA  

Microsoft Academic Search

This study was carried out to evaluate 19 native and exotic species and to identify potential species for plantation in homogeneous stands and in agroforestry systems in forest ecosystem in Roraima State. The species were planted from 1997 to 2000. When the objective was sawn wood production the spacing was 4 x 3 m and when the objective was energy

Helio Tonini; Marcelo Francia Arco-Verde; Dalton Schwengber; Moises Mourão Junior

2006-01-01

90

HAMMONDIA HEYDORNI, NEOSPORA CANINUM E TOXOPLASMA GONDII EM CAPRINOS ABATIDOS NO ESTADO DA BAHIA, BRASIL  

Microsoft Academic Search

Resumo Hammondia heydorni, Neospora caninum e Toxoplasma gondii são protozoários coccídios que parasitam diferentes espécies animais domésticas e silvestres. E nquanto a infecção por H. heydorni parece ser assintomática, N. caninum e T. gondii podem provocar alterações reprodutivas em ruminantes. N. caninum é um importante causador de abortamentos em bovinos, ao passo que T. gondii induz a abortamentos em caprinos

R. S. UZÊDA; K. ABE-SANDES; L. F. P. GONDIM

91

REDISTRIBUCIÓN DEL ESTADO TENSIONAL EN ALAMBRES DE ACERO DE ALTA RESISTENCIA  

Microsoft Academic Search

This paper analyzes the evolution of the residual stresses in high strength steel wires when diverse fatigue loadings are applied. According to the obtained results, a stress redistribution at surface is observed, it being more accused in the cases where the maximum loading exceeds the yield strength. This effect on the stress state could be relevant in the analysis of

M. Lorenzo; D. Vergara; V. Kharin; J. Toribio

92

Evaluación del estado de salud con la Encuesta SF36: resultados preliminares en México  

Microsoft Academic Search

Objective. To establish a multidimensional profile of the health status in a population of southeastern Mexico and analyze the psychometric properties of a translation of the SF-36 survey authorized by the International Quality of Life Assessment Project. Material and methods. The SF-36 was administered to 257 volunteers of a clinic and a con- trol group in a governmental institution. The

Miguel A. Zúniga; Genny T. Carrillo-Jiménez; Peter J. Fos; Barbara Gandek; Manuel R. Medina-Moreno

1999-01-01

93

RESCATE Y RETORNO A ESTADO SALVAJE DE UN OSO PARDO EN ASTURIAS (ESPAÑA)  

Microsoft Academic Search

Una hembra de oso pardo (Ursus arctos, L.), localizada junto a una carretera el 28 de marzo de 1999 con dificultades motrices y que no mostraba el comportamiento habitual de huida, fue capturada y dotada de un transmisor. Tras una inspección sobre el terreno, en la que sus ritmos respiratorios y cardiacos y su temperatura corporal resultaron normales, se le

J. NAVES; A. FERNÁNDEZ-GIL; M. RUIZ-BASCARÁN; J. F. GARCÍA-GAONA; J. C. DEL CAMPO; Y M. DELIBES

2001-01-01

94

A GESTÃO DO CONHECIMENTO E A INOVAÇÃO: ABORDAGENS DO ATUAL ESTADO DA ARTE  

Microsoft Academic Search

The world and the current society live a moment of deep transformations. Concepts are appearing and being adapted. The Knowledge Management appears as alternative in the managerial ambit. Information Technology, allied to new products and concepts it is generating innovation in the companies management. The organizations to each generation, year, event suffers changes that are worsened by the economical recession

Fábio Câmara; Araújo de Carvalho; M. Eng; João Ernesto Escosteguy Castro; Aline França de Abreu

95

Níveis de organoclorados em queijos produzidos no Estado do Rio Grande do Sul  

Microsoft Academic Search

Organochlorine compounds are pesticides used in agriculture, for the control of biological vectors of diseases and of livestock ectoparasites. Their use in Brazil is now prohibited, except for control of biological vectors in epidemics. However, residues of such compounds can still be found in the environment and in foodstuffs. For this reason, the presence of organochlorine compounds in cheese produced

Joice Sifuentes dos Santos; Ana Augusta Odorissi Xavier; Edi Franciele Ries; Ijoni Hilda Costabeber; Tatiana Emanuelli

2006-01-01

96

Sleep-related violence: does the polysomnogram help establish the diagnosis?  

Microsoft Academic Search

With the growing number of legal cases of sleep-related violence coming to public attention, and the development of sleep medicine as an area of expertise, sleep clinicians are being turned to for help in discriminating those violent individuals who sustain a diagnosis of adult parasomnia of the arousal disorder type, (sleep walking, 307.46-0, sleep terrors 307.46-1, or confusional arousals 307.46-2)

Rosalind Cartwright

2000-01-01

97

Childbirth and Manic-Depressive Illness An Account of Emil Kraepelin's Contribution  

Microsoft Academic Search

Background: Kraepelin reported on the relationship between childbirth-related psychiatric disorders and manic- depressive illness. Methods: Kraepelin's texts were reviewed to gather the relevant information on the relationship between childbirth and manic-depressive illness. Results: Kraepelin's single most important contribution to the area of perinatal psychiatry was perhaps his decision to include amentia, also called confusional insanity, under the rubric of manic-depressive

Verinder Sharma; Avraham Santopinto

98

Q fever meningoencephalitis associated with bilateral abducens nerve paralysis, bilateral optic neuritis and abnormal cerebrospinal fluid findings  

Microsoft Academic Search

Summary Q fever is an zoonosis caused byCoxiella burnetii, the clinical features of which are often non-specific and self-limited. Involvement of the central nervous system is rare and is usually seen as a complication of endocarditis caused by this rickettsial organism in the chronic disease. Specific neurological manifestations in the course of the acute illnes aseptic meningitis, encephalitis, toxic confusional

Y. Shaked; Y. Samra

1989-01-01

99

Sexsomnia: parasomnia associated with sexual behaviour during sleep.  

PubMed

INTRODUCTION: The purpose of our study is to describe 4 cases of sexsomnia, a form of parasomnia characterised by sexual behaviour during sleep. METHODS: Clinical history and video-polysomnography recordings from patients diagnosed with sexsomnia in the Multidisciplinary Sleep Unit at Hospital Clínic in Barcelona. RESULTS: Three men and one woman between 28 and 43 years of age reported sexual behaviours during sleep with progression times ranging from 9 months to 7 years. Episodes consisted of masturbation without seeking the participation of a sleeping partner (2 cases) and attempts at sexual intercourse with inappropriate and uncharacteristic vocalizations and behaviours (3 cases). The frequency of the episodes ranged from 4 isolated episodes to 2-3 per week. Patients were amnestic of these events and surprised by their partners' accounts of their behaviour. Medical histories revealed that 1 patient was a somnambulist, 2 had confusional arousals, and 1 experienced somniloquy. Video-polysomnography did not disclose sexual behaviours during sleep but revealed sleep apnoea in 2 cases and periodic leg movements in sleep in another. The only patient treated with clonazepam reported decreased frequency of both confusional arousals and sexsomnia episodes. CONCLUSIONS: Sexsomnia occurs in young adults and is characterised by masturbation and inappropriate attempts at achieving sexual intercourse followed by total amnesia of the events. It can be associated with other parasomnias such as sleepwalking and confusional arousals. Other sleep disorders, including sleep apnoea and periodic leg movement disorder, may trigger episodes of sexsomnia. PMID:23664055

Ariño, H; Iranzo, A; Gaig, C; Santamaria, J

2013-05-01

100

Registros documentados de cinco novos trinta-réis (Charadriiformes: Sternidae) no estado do Ceará, nordeste do Brasil  

Microsoft Academic Search

Documented records of five terns (Charadriiformes: Sternidae) new for the State of Ceará, north-east Brazil. We present new records, based on museum specimens and\\/or photographs, of five species of Sternidade for the State of Ceará in north- east Brazil, namely, Black Noddy Anous minutus (apparently the first from Brazilian mainland), Least Tern Sternula antillarum, Black Tern Chlidonias niger, Arctic Tern

Weber Girão; Ciro Albano; Alberto A. Campos; Thieres Pinto; Caio J. Carlos

101

Guia para su incorporacion a los Estados Unidos de America (A Guide to Resettlement in the United States. Spanish).  

ERIC Educational Resources Information Center

|This resettlement guide, entirely in Spanish, describes the initial stage of resettlement and the processes that refugees undergo as new arrivals. Subjects covered in this guide include pre-arrival procedures, admissions criteria, immigrant's statement of understanding, travel costs and U.S. Customs; resettlement procedures, immigrants'…

Center for Applied Linguistics, Washington, DC. Refugee Service Center.

102

ADICIONES AL CONOCIMIENTO DE LA DIVERSIDAD DE LOS HONGOS CONIDIALES DEL BOSQUE MESÓFILO DE MONTAÑA DEL ESTADO DE VERACRUZ  

Microsoft Academic Search

An account of 29 anamorphs and one holomorph species are presented, all of them were collected in several localities of the State of Veracruz, where small areas of cloud forest still remain. All the species are recorded for the first time to Mexico, many of them are scarcely known in the worldwide. Pictures and data about their distribution and substrates

GABRIELA HEREDIA ABARCA; REYES ESTEBANEZ Y ROSA; M. A. ARIAS MOTA; Carretera Antigua; Congregación El Haya; JULIO MENA PORTALES; ÁNGEL MERCADO SIERRA

2004-01-01

103

Relações solo-geoambiente em áreas de ocorrências de Ipucas na planície do Médio Araguaia - Estado de Tocantins  

Microsoft Academic Search

RESUMO - Dentre as paisagens do médio rio Araguaia, destacam-se as extensas planícies e depressões sazonalmente alagadas. Nelas se inserem formações florestais higrófilas denominadas Ipucas, como enclaves peculiares pela sua fitossociologia e ambiente pedogeomorfológico. Esses fragmentos florestais naturais ocorrem na planície fluvial, em região de ecótono entre o Cerrado e a Floresta Amazônica. Neste estudo, foi selecionada uma área de

Alan Kardec Elias Martins; Carlos Ernesto G. R. Schaefer; Elias Silva; Vicente Paulo Soares; Guilherme Resende Corrêa; Bruno Araújo Furtado de Mendonça

2006-01-01

104

OCORRÊNCIA DE TARPON ATLANTICUS (VALENCIENNES, 1846) (PISCES: MEGALOPIDAE) NA BAÍA DE TODOS OS SANTOS (ESTADO DA BAHIA,BRASIL)  

Microsoft Academic Search

The presence of Tarpon atlanticus (Valenciennes, 1846) is recorded for the first time inside the Todos os Santos Bay (State of Bahia, Brazil). Five specimens were analized, measuring between 210,95 and 226,00mm in total length, collected near the mouth of Dorneles River (Araripe de Baixo Beach), Saubara Municipality (13ºS - 39ºW). Morphometric and meristic data, as well as a diagnosis,

Paulo Roberto Duarte Lopes; Marconi Porto Sena

105

Primórdios do Ativismo Feminino nos Estados Unidos e a Violência de Rua EARLY UNITED STATES WOMEN'S ACTIVISM AND STREET VIOLENCE  

Microsoft Academic Search

This paper focus on the role of women in antebellum racial incitement, beginning with Philadelphia and Boston Female Anti-Slavery Societies. The political nature of their abolitionist activities and their acceptance of black women as members led critics to associate the women's groups with the fear of racial \\

JUDITH MULCAHY

106

RELAÇÃO ENTRE OCORRÊNCIA DO AMARELECIMENTO FATAL DO DENDEZEIRO (Elaeis guineensis Jacq.) E VARIÁVEIS AMBIENTAIS NO ESTADO DO PARÁ  

Microsoft Academic Search

The development of a sustainable production system, perennial, with low environmental impact and high socioeconomic potential in the Brazilian Amazon has always been seen as an ideal model of development for the region. In this context, the deployment and the expansion of the cultivation of palm ( Elaeis guineensis Jacq.) was driven and today represents one of agroindustrial activities with

Adriano Venturieri

107

Chironomidae (Diptera) do Rio Ribeira (divisa dos Estados de São Paulo e Paraná) numa avaliação ambiental faunística  

Microsoft Academic Search

Chironomidae (Diptera) in Rio Ribeira (border between the States of São Paulo and Paraná) in an Environmental faunistic evaluation- During a program of limnological characterization, the macrobenthic community was evaluated in a section of river Ribeira, in the area included of the future reservoir UHE Tijuco Alto. In the four expeditions, during XII\\/95 to IX\\/96, samples were collected in five

Susana Trivinho-Strixino; Giovanni Strixino

2005-01-01

108

PRODUÇÃO INTEGRADA DE FRUTAS PIF e a produção de Açaí (Euterpe oleracea Mart) no Estado do Pará: ameaças ou oportunidades?  

Microsoft Academic Search

Este trabalho, apoiado na dinâmica de crescimento do consumo de sucos naturais, como uma das bebidas esportivas associadas à imagem de produto saudável, suscita as questões relacionadas com a aplicação do PIF junto à produção do Açaí, visto a ampliação da aceitação desse produto nos mercados nacional e internacional. Está fundamentado na aplicação da legislação específica e seus pré-requisitos frente

Rubens Cardoso Da Silva; Paulo Cerqueira Dos Santos; Jose Sebastiao Romano De Oliveira; Maria Cristina Das Neves Silva; Ismael Matos Da Silva

2008-01-01

109

Producción de hojarasca en un bosque semideciduo estacional en São Pedro, Potirendaba, estado de São Paulo, Brasil  

Microsoft Academic Search

Litter production was determined during a year in a semideciduous forest located in Potirendaba, State of São Paulo, Brasil. Litterfall was collected at monthly intervals, from June 1999 to May 2000, by placing 15 traps of 0.25 m 2 of surface area. The material was separated into five components and the sorted samples were dried at 80ºC in order to

Maristela Sanches Bertasso-Borges; Dania Prieto Trueba; Fabrícia C. Peral; Cristiane A. R. Tamburi; Ronaldo Caseri; Rosalina Berazaín

110

INVENTARIO DE CONTAMINACIÓN EMITIDA A SUELO, AGUA Y AIRE EN 14 MUNICIPIOS DEL ESTADO DE HIDALGO, MÉXICO  

Microsoft Academic Search

An inventory of pollution for 14 municipalities in Hidalgo, México is reported in this paper. The studied zone concentrates about 40 % of Hidalgo's population, its main communication roads, services, the most representative industries and all the state's industrial zones. Therefore, it is important to determinate qualitative and quantitatively pollution emissions in this area. The methodology used was the environmental

René Bernardo; Elías CABRERA; José GORDILLO MARTÍNEZ; Álvaro CERÓN BELTRÁN

2003-01-01

111

Análisis no destructivo del estado de degradación en morteros bajo la acción de ciclos hielo-deshielo  

Microsoft Academic Search

Evaluation by means of non destructive techniques to deterioration of mortars due to cycles freeze-thawing In this paper we evaluate different mortars, with varying degrees of damage by the action of ice-thawing cycles, and analyzing their status through various methods to assess usual. The results obtained by these methods are compared to an analysis by means of the technique of

E. MEnéndEz; J. dE Frutos

112

EL CULTIVO DE LA CANOLA (Brassica napus Y B. rapa) EN EL ESTADO DE JALISCO, MÉXICO. I. CARACTERÍSTICAS AGRONÓMICAS  

Microsoft Academic Search

Growing canola (Brassica napus and B. rapa) in Jalisco State, Mexico. I. Agronomic characteristics With the purpose of determining some probable benefits of canola production in Jalisco State, Mexico, the crop potential was studied in different counties of the regions of Ciénega and Sur de Jalisco. During four cycles of agricultural production in autumn- winter (2000-2004) varieties of canola were

Ramón Hernández; Alfredo González; Patricia River

113

Estado de conservación de Melanomys zunigae (Sanborn 1949) y de los mamíferos pequeños en las Lomas de Lima  

Microsoft Academic Search

The coastline and the western slopes of the Andes are main sites of Peruvian endemic mammals. Along the central coast occurs the only endemic rat from Lima, Zuniga's dark rice rat, Melanomys zunigae (Sanborn, 1949). It was collected by Enrique Zuñiga in 1942 at Lomas de Atocongo and Cerro San Jerónimo. Since then, sporadic searches have been conducted, not necessarily

José Luis Mena; Martha Williams; Carla Gazzolo; Francesca Montero

114

De la White House a la Black House: elección presidencial de los Estados Unidos en el 2008. ¿Movilidad social ascendente?  

Microsoft Academic Search

The aim of this article is to present a sociological interpretation of the 2008 presidential election in the United States. It suggests that the victory of the democrat Barack Obama, can be analyzed by the conceptual framework of social mobility. The historical-ideological context in which the American dream has emerged and has been transformed; an empirical analysis that reflects the

Juan Paul Farías Peña

115

Atlas de Recursos Eólicos del Estado de Oaxaca (The Spanish version of Wind Energy Resource Atlas of Oaxaca)  

SciTech Connect

The Oaxaca Wind Resource Atlas, produced by the National Renewable Energy Laboratory's (NREL's) wind resource group, is the result of an extensive mapping study for the Mexican State of Oaxaca. This atlas identifies the wind characteristics and distribution of the wind resource in Oaxaca. The detailed wind resource maps and other information contained in the atlas facilitate the identification of prospective areas for use of wind energy technologies, both for utility-scale power generation and off-grid wind energy applications.

Elliott, D.; Schwartz, M.; Scott, G.; Haymes, S.; Heimiller, D.; George, R.

2004-04-01

116

EFEITO DA ÉPOCA DE SEMEADURA SOBRE A QUALIDADE FISIOLÓGICA DE SEMENTE DE SOJA NO ESTADO DO MATO GROSSO1  

Microsoft Academic Search

This study was conducted to determine the effect of planting date on soybean seed quality. The cultivars evaluated were Cristalina, IAC-2, Tropical, Doko, and IAC-8. The sowing dates were stablished between October 29, 1983 and January 7, 1984 (10\\/29, 11\\/11, 11\\/25, 12\\/10, 12\\/24 and 01\\/7), at Lucas do Rio Verde in Mato Grosso State, Brazil. In the plantings carried out

NILTON PEREIRA DA COSTA; JOSÉ DE BARROS; FRANÇA NETO; ADEMIR ASSIS HENNING; FRANCISCO CARLOS KRZYZANOWSKI; NORIVAL TIAGO CABRAL; MÁRCIO C. MENDES

117

Adaptive Estimation of State Noise in a Kalman Filter Estimacao Adaptativa Do Ruido No Estado Para O Filtro de Kalman.  

National Technical Information Service (NTIS)

In the presence of estimates, divergence due to errors in system dynamics modelling and to algorithm numerical ill-conditioning, Kalman filter usefulness is seriously impaired. A procedure to estimate the state noise level adaptively and in real time in o...

A. R. Neto H. K. Kuga

1982-01-01

118

EFECTO DE LA APLICACIÓN DE RESIDUOS ORGÁNICOS SOBRE EL CULTIVO DEL MAÍZ EN SUELOS DEGRADADOS DEL ESTADO YARACUY, VENEZUELA  

Microsoft Academic Search

Effect of applications of organic residues on maize performance in two soils of Yaracuy State, Venezuela The intense land cultivation for maize cropping on the last 50 years in Yaracuy State, Venezuela, caused an accelerated soil degradation expressed by loss of soil organic matter and crop productivity. With the objective of improving those parameters, the use of organic residues were

Isabel Arrieche; Orlando Mora

2005-01-01

119

COMPARACIÓN DE MÉTODOS PARA EL ANÁLISIS DE MERCURIO EN SUELOS PROCEDENTES DE EL CALLAO, ESTADO BOLÍVAR, VENEZUELA  

Microsoft Academic Search

SUMMARY Mercury levels in soil samples from El Callao, Bolívar State, Venezuela, were determined by mineralization in aqua regia followed by cold vapor-atomic absorption spectrometry (CVAAS), and by direct determination on solid matrix by pyrolisis and preconcentration using an automatic mercury analyzer AMA-254 (AMA). Hg concentration in samples were in the range of 0.05 to 17.31mg\\/kg for CVAAS and of

Armando Carrasquero Durán; Melitón Adams

120

Cambios en el uso del suelo y deforestación en el sur de los estados de Campeche y Quintana Roo, México  

Microsoft Academic Search

Landsat MSS satellite imagery from 1975 to 1990 were anaiyzed in order to estimate the rates of conversion of tropical forests and savannas to cropland and pasture in the southern Yucatán Peninsula of Mexiw. The area of southeastern Campeche and southern Quintana Roo was subject of a federally financed directed-colonization program during the seventies, which included felling the tropical forests

Sergio Cortina Villar; Pedro Macario Mendoza; Yelena Ogneva-Himmelberger

121

Ocorrência e coleta de colônias e de enxames de abelhas africanizadas na zona urbana de Maringá, Estado do Paraná, Brasil  

Microsoft Academic Search

Occurrence and collection of Africanized honeybee swarm and colonies on the urbane zone of Maringá, Paraná State, Brazil. During the last years, a great number of swarms of Africanized honey bees migrated to the urban zone of Maringá, Paraná State, Brazil, causing a great concern, mainly in those who live at home with children, elderly and allergic people. This study

Vagner De Alencar Arnaut de Toledo; Fábio Luiz Buranelo Toral; Sidnei Bueno de Miranda; Adilson Shiraishi; Juliano Hideo Hashimoto; Waldirene Rossi da Silva

2006-01-01

122

ANÁLISIS DEL RIESGO PARA LA SALUD PÚBLICA OCASIONADO POR LA EXPOSICIÓN A FLUORUROS EN EL ESTADO DE AGUASCALIENTES, MÉXICO  

Microsoft Academic Search

of the groundwater wells that provide drinking water for the state of Aguascalientes show fluoride concentrations above 1.5 mg\\/L. The objective of our research was to perform a risk analysis study to estimate the health implicationsof fluoride exposure through drinking water in Aguascalientes. Fluoride exposure doses were calculated for local population in each of the state municipalities. These estimates were

Adrián BONILLA-PETRICIOLET; Rodolfo TREJO-VÁZQUEZ; Carlos MÁRQUEZ-ALGARA

123

Perspectiva Historica de la Educacion Bilingue en los Estados Unidos (A Historical Perspective of Bilingual Education in the United States)  

ERIC Educational Resources Information Center

|This article defines bilingualism and bilingual education and traces the history of bilingual education in the United States, starting with the Spanish missions in the west. (Text is in Spanish.) (NCR)|

Zamora, Juan Clemente

1978-01-01

124

Florística y fisonomía de un matorral xerófilo espinoso intervenido en Punta de Piedras, Municipio Miranda, Estado Zulia, Venezuela  

Microsoft Academic Search

Floristic and physiognomic characteristics of disturbed thorny xerophytic scrubland in Punta de Piedras, Miranda Municipality, Zulia State, Venezuela. We determined the floristic and physiognomic aspects of disturbed thorny xerophytic scrubland in Punta de Piedras, Miranda Municipality, Zulia State, Venezuela. Botanical sampling was done twice monthly (November 2005-June 2006), in both rainy and dry seasons, for a total of 16 samples.

Antonio Vera; Maritza Martínez; Yin Ayala; Sadieth Montes; Anderson González

2009-01-01

125

Serum levels of brain-derived neurotrophic factor in acute and posttraumatic stress disorder: a case report study Nível sérico do fator neurotrófico derivado do cérebro no transtorno de estresse agudo e no transtorno de estresse pós-traumático: relato de casos  

Microsoft Academic Search

Objective: The aim of this study was to evaluate brain-derived neurotrophic factor levels in two patients, one with posttraumatic stress disorder and one with acute stress disorder, before and after treatment, and to compare those levels to those of healthy controls. Method: Brain-derived neurotrophic factor level, Davidson Trauma Scale, Beck Depression Inventory, Global Assessment of Functioning, and Clinical Global Impression

Simone Hauck; Fabiano Gomes; Érico de Moura; Silveira Júnior; Ellen Almeida; Marianne Possa; Lúcia Helena Freitas Ceitlin

126

Disorders of Arousal From Sleep and Violent Behavior: The Role of Physical Contact and Proximity  

PubMed Central

Study Objectives: To review medical and legal case reports to determine how many appear to support the belief that violence against other individuals that occurs during Disorders of Arousal - sleepwalking, confusional arousal, and sleep terrors – is triggered by direct physical contact or close proximity to that individual and does not occur randomly or spontaneously. Design: Historical review of case reports in the medical and legal literature. Measurements and Results: A total of 32 cases drawn from medical and legal literature were reviewed. Each case contained a record of violence associated with Disorders of Arousal; in each, details of the violent behavior were available. Violent behaviors associated with provocations and/or close proximity were found to be present in 100% of confusional arousal patients and 81% of sleep terror patients. Violent behaviors were associated with provocation or close proximity in 40%–90% of sleepwalking cases, depending on whether the legal verdict and other factors were taken into account. Often the provocation was quite minor and the response greatly exaggerated. The specific manner in which the violence was triggered differed among sleepwalking, confusional arousals, and sleep terrors. Conclusions: In the cases reviewed, violent behavior directed against other individuals associated with Disorders of Arousal most frequently appeared to follow direct provocation by, or close proximity to, another individual. Sleepwalkers most often did not seek out victims, but rather the victims sought out or encountered the sleepwalker. These conclusions are tempered by several limitations: the selection of cases was not random and may not represent an accurate sample of violent behaviors associated with Disorders of Arousal. Also, final verdicts by juries in reported legal cases should not be confused with scientific proof of the presence or absence of sleepwalking. The pathophysiology of Disorders of Arousal with and without violent behavior could be associated with normally occurring deactivation of the frontal lobes during slow wave sleep (SWS) connected via atypically active thalamocortical pathways to the limbic areas. It is not known if the violent sleepwalker, confusional arousal patient, or sleep terror patient differs from other patients with these disorders. The conclusions of this case series await confirmation by the results of future sleep laboratory based studies. Citation: Pressman MR. Disorders of arousal from sleep and violent behavior: the role of physical contact and proximity. SLEEP 2007;30(8):1039–1047.

Pressman, Mark R.

2007-01-01

127

Postmalaria neurological syndrome after treatment of Plasmodium falciparum malaria in the United States.  

PubMed

The neuropsychiatric manifestations of postmalaria neurological syndrome (PMNS) that have been described are highly variable and include an acute confusional state or acute psychosis with >or=1 of the following symptoms: clouding of consciousness, inappropriate speech or behavior, visual hallucination, catatonia with waxy flexibility, generalized convulsion, fine postural tremor, and decreased muscle tone. This postinfectious syndrome occurs after the clearance of parasitemia and is not a manifestation of cerebral malaria. We present the first identified case of and magnetic resonance imaging findings for a patient with PMNS in the United States. PMID:12856230

Falchook, Gerald S; Malone, Clinton M; Upton, Scott; Shandera, Wayne X

2003-07-07

128

Delirium Superimposed on Dementia  

PubMed Central

Delirium is an acute, fluctuating confusional state that results in poor outcomes for older adults. Dementia causes a more convoluted course when coexisting with delirium. This study examined 128 days of documentation to describe what nurses document when caring for patients with dementia who experience delirium. Nurses did not document that they recognized delirium. Common descriptive terms included words and phrases indicating fluctuating mental status, lethargy, confusion, negative behavior, delusions, and restlessness. Delirium is a medical emergency. Nurses are in need of education coupled with clinical and decisional support to facilitate recognition and treatment of underlying causes of delirium in individuals with dementia.

Steis, Melinda R.; Fick, Donna M.

2012-01-01

129

Delirium at high altitude.  

PubMed

A 35-year-old man on a trek to the Mount Everest region of Nepal presented with a sudden, acute confusional state at an altitude of about 5000 m. Although described at higher altitudes, delirium presenting alone has not been documented at 5000 m or at lower high altitudes. The differential diagnosis which includes acute mountain sickness and high altitude cerebral edema is discussed. Finally, the importance of travelling with a reliable partner and using proper insurance is emphasized in treks to the Himalayas. PMID:12006167

Basnyat, Buddha

2002-01-01

130

Mental status changes and stroke  

Microsoft Academic Search

Objective: To determine the frequency with which an acute confusional state is caused by a stroke and to evaluate the usefulness of\\u000a obtaining computed tomography scans in this setting.\\u000a \\u000a \\u000a Design: Retrospective analysis.\\u000a \\u000a \\u000a \\u000a \\u000a Setting: Tertiary referral center.\\u000a \\u000a \\u000a \\u000a \\u000a Patients: The authors reviewed 127 neurology consultations requested for patients presenting with acute and apparently isolated mental\\u000a status changes. The mean age was 62

Selim R. Benbadis; Cathy A. Sila; Richard L. Cristea

1994-01-01

131

[Delirium caused by nonconvulsive status epilepticus].  

PubMed

We report about a patient (66 years) who was referred to our psychiatric hospital because of a progressive confusional state with acute onset. The colleagues of the referring psychiatric hospital considered a first manic episode as the cause of the symptoms and under therapy with haloperidol the confusional state had shown a progression.The clinical examination's findings were a mild central facial paresis on the right side and a mild hemiparesis on the right side with elevated reflex levels.The patient was disoriented, he had cognitive and mnestic deficits. His reasoning was slowed, incoherent and perseverating. The patient had a slight euphoria.An EEG recording showed a continuous regional EEG-seizure pattern. In combination with the clinical symptoms we diagnosed a nonconvulsive status epilepticus. Under anticonvulsive treatment with Lorazepam and Valproic acid the status epilepticus sustended but a control EEG recording showed signs of a Valproate-encephalopathy. Under treatment with Topiramate symptoms ameliorated but due to a vascular dementia the patient still showed fluctuating symptoms of cognitive and mnestic disturbances. PMID:22473464

Pittermann, Patrick; Gabriel, Susanne; Röschke, Joachim

2012-04-02

132

Métodos para la suavización de indicadores de mortalidad: aplicación al análisis de desigualdades en mortalidad en ciudades del Estado español (Proyecto MEDEA)  

Microsoft Academic Search

Although there is some experience in the study of mortality inequalities in Spanish cities, there are large urban centers that have not yet been investigated using the census tract as the unit of territorial analysis. The coordinated project «Socioeconomic and environmental inequalities in mortality in Spanish cities. The MEDEA project» was designed to fill this gap, with the participation of

M. Antònia Barceló; Marc Saez; Gemma Cano-Serral; Miguel Ángel Martínez-Beneito; José Miguel Martínez; Carme Borrell; Ricardo Ocaña-Riola; Imanol Montoya; Montse Calvo; Gonzalo López-Abente; Maica Rodríguez-Sanz; Silvia Toro; José Tomás Alcalá; Carme Saurina; Pablo Sánchez-Villegas; Adolfo Figueiras

2008-01-01

133

Comunicação relacionada ao uso de agrotóxicos em região agrícola do Estado do Rio de Janeiro Pesticide use reporting in a rural area of Rio de Janeiro state, Brazil  

Microsoft Academic Search

Objective To assess communications aspects related to pesticide use in a rural area of the Rio de Janeiro state, Brazil. Methods The study was carried out in the area of São Lourenço stream. It was based on methodological triangulation comprising: semi-structured interviews and observation of a local population sample (about 600 inhabitants); structured questionnaire to collect data on the local

Frederico Peres; Brani Rozemberg; Sérgio Rabello Alves; Josino Costa Moreira; Jefferson José Oliveira-Silva

134

VIABILIDADE TÉCNICA E ECONÔMICA DA SUBSTITUIÇÃO DE FONTES CONVENCIONAIS DE ENERGIA POR BIOGÁS EM ASSENTAMENTO RURAL DO ESTADO DE SÃO PAULO1  

Microsoft Academic Search

The aim of this work was to evaluate the economic feasibility of two biodigestion systems using animal excrements in a rural settlement, in Itaberá - SP, Brazil, in the year of 2005. One of them was constructed to supply biogas for five residences. The other one was constructed to supply biogas for production activities. The generated benefits related to the

MAURA S. T. ESPERANCINI; FERNANDO COLEN; OSMAR DE C. BUENO; ANDRÉA E. B. PIMENTEL; ELIAS J. SIMON

135

…TICA Y G…NERO EN LA OBRA DE PIONEROS Y PIONERAS DE LA PSICOLOG?A EN ESTADOS UNIDOS DE NORTEAM…RICA Y CHILE1  

Microsoft Academic Search

This study seeks the presence of contents related to gender and ethics in the writings of 12 pioneers in psychology, both from United States and Chile: William James, Stanley Hall, James Baldwin, Mary Calkins, Margaret Washburn, Helen Thompson, Hernán Larraín, Salvador Cifuentes, Sergio Yulis, Lola Hoffmann, Héliettè Saint Jean, and Leyla Holmberg. We confirmed our central hypothesis, that a prevalence

MARÍA I NÉS WINKLER; DIANA PASMANIK; XIMENA WOLFF; MARÍA ISABEL REYES; HELIA VARGAS

136

…TICA Y G…NERO EN LA OBRA DE PIONEROS Y PIONERAS DE LA PSICOLOG?A EN ESTADOS UNIDOS DE NORTEAM…RICA Y CHILE 1  

Microsoft Academic Search

This study seeks the presence of contents related to gender and ethics in the writings of 12 pioneers in psychology, both from United States and Chile: William James, Stanley Hall, James Baldwin, Mary Calkins, Margaret Washburn, Helen Thompson, Hernán Larraín, Salvador Cifuentes, Sergio Yulis, Lola Hoffmann, Héliettè Saint Jean, and Leyla Holmberg. We confirmed our central hypothesis, that a prevalence

MARÍA I NÉS WINKLER; DIANA PASMANIK; XIMENA WOLFF; MARÍA ISABEL REYES; HELIA VARGAS

137

BIOLOGIA ALIMENTAR DO BAGRE GENIDENS GENIDENS (VALENCIENNES, 1839) NA BARRA DA LAGOA DO AÇU, NORTE DO ESTADO DO RIO DE JANEIRO  

Microsoft Academic Search

FEEDING BIOLOGY OF THE CATFISH GENIDENS GENIDENS (VALENCIENNES, 1839) FROM THE AÇU LAKE SAND BARR IN THE NORTH OF THE STATE OF RIO DE JANEIRO. The article describes the feeding habits of the catfi sh Genidens genidens (Valenciennes, 1839) caught in the Açu Lake, an impor- tant coastal lagoon in the north of the state of Rio de Janeiro. It

Mona Lisa; Ribeiro Pedra; Marcelle de Azevedo Oliveira; Ronaldo Novelli

138

Determinação da área de vida e do uso de hábitats pela jaguatirica (Felis pardalis) na região nordeste do Estado de São Paulo  

Microsoft Academic Search

The brazilian ocelot (Felis pardalis mitis) is one of the facing extinction cats due mainly to the loss of habitat. This animal occurs mainly in the vegetal tree coverings and feeds itself basically of small vertebrate animals as rodents, reptiles and birds among others. This study was carried through in the Jatai Ecological Station, in the period between March, 2000

Ana Lia de Barros; José Eduardo Mantovani; Caixa Postal

139

Qualidade de ambiente para a onça-pintada, puma e jaguatirica na Baía de Guaratuba, Estado do Paraná, utilizando os aplicativos Capture e Presence  

Microsoft Academic Search

Environmental quality for jaguar, puma and ocelot in Guaratuba Bay, State of Paraná, using the programs Capture and Presence. Two month-long expeditions to Guaratuba Bay in the southern Atlantic Forest of Brazil were conducted in 2006. Parameters calculated from vestiges and camera-trap sampling were mammalian richness and proportion of area occupied (PAO) by jaguar, puma, and opportunistically, by ocelot. Eight

Marcelo Mazzolli; Matthias Ludwig; Alfons Hammer; Projeto Puma; Liberato Carioni

2008-01-01

140

Cambios en el uso de tabaco y factores relacionados en estudiantes del sexto al noveno grado, Estado Lara, Venezuela, años 2000 y 2003  

Microsoft Academic Search

The Global Youth Tobacco Survey (GYTS) is a school-based surveillance system. In Lara State, Venezuela, it was conducted by a coalition of or- ganizations. The instrument includes: attitudes, knowledge, behaviors, exposure to environmen- tal tobacco smoke, mass media, and marketing. Participation was 85.7% in 2000 and 79.3% in 2003. Comparing prevalence (%) from 2000 to 2003: \\

Ricardo Granero; Magda Sánchez

2006-01-01

141

Validación de escalas de seguridad alimentaria y de apoyo social en una población afro-colombiana: aplicación en el estudio de prevalencia del estado nutricional  

Microsoft Academic Search

We conducted a cross-sectional study on 193 mothers of children 6 to 18 months of age in an African-Colombian community, with the objec- tives: (1) to adapt and validate the Community Childhood Hunger Identification Project scale, the DUKE-UNC-11 social support scale, and the Quebec Longitudinal Study of Child Develop- ment (QLSCD) partner support scale, and (2) to identify any existent

Beatriz Eugenia Alvarado; María Victoria Zunzunegui; Helene Delisle

142

Influence of Conduction States on the Electronic Properties of Doped Semiconductors Influencia DOS Estados de Conducao Sobre as Propriedades Eletronicas de Semicondutores Dopados.  

National Technical Information Service (NTIS)

A model for the calculation of electronic properties of doped semiconductors, that considers the presence of the conduction band of the host material, is proposed. The model is derived from the standard basis operator form of the extended Anderson model. ...

L. F. Perondi R. Kishore

1983-01-01

143

Bactérias transportadas em mutucas (Diptera: Tabanidae) no nordeste do estado do Pará, Brasil Bacteria transported by horseflies (Diptera: Tabanidae) in the northeast of Pará State, Brazil  

Microsoft Academic Search

Resumo: Os insetos da família Tabanidae (Diptera), conhecidos vulgarmente como mutucas, são considerados potenciais pragas ao homem e animais domésticos pelo comportamento hematófago de suas fêmeas. São capazes de transportar mecanicamente vírus, bactérias e helmintos, pelo fato desses patógenos aderirem-se à estrutura da probóscide. As coletas dos insetos foram realizadas em áreas peri-urbanas e florestadas, utilizando-se armadilhas Malaise e cavalos

Willy Cristiano Luz-Alves; Inocêncio de Sousa Gorayeb; José Caetano Lima Silva; Edvaldo Carlos; Brito Loureiro

144

Perfil de atividade física em escolares da rede pública de diferentes estados nutricionais Physical activity profile among children of public school of different nutritional status  

Microsoft Academic Search

JENOVESI, J.F.; BRACCO, M.M.; COLUGNATI, F.A.B.; TADDEI, J.A.A.C. Physical activity profile among children of public school of different nutritional status. R. bras. Ci. e Mov. 2003; 11(4): 57-62. The aim of study was to compare physical activity levels among school children of different nutritional status. The sample was composed of 2519 children of both sexes (male 50,7%; female 49,3%), of

Jefferson Ferreira Jenovesi; Mario Maia Bracco; Fernando Antonio; Basile Colugnati

145

A Transferencia do Controle da Educacao da Igreja para o Estado (The Transfer of Educational Control from the Church to the State).  

ERIC Educational Resources Information Center

|Analyzes the principal phases in the historical process of the occidental world that resulted in the transfer of educational control from the church to the state, demonstrating some of the consequences of this historic turn. (BT)|

Silva, Marcos

2000-01-01

146

Assistência pré-natal, baixo peso e prematuridade no Estado de São Paulo, 2000 Prenatal care, low birth weight and prematurity in Brazil, 2000  

Microsoft Academic Search

Objective The historical evolution of infant mortality rate and neonatal mortality according to birth weight and term of delivery in the state of São Paulo are presented to assess the role of the number of prenatal visits and others factors for determining mortality. Methods Based on data available from the Seade Institute of Vital Statistics, four variables (maternal age, marital

Samuel Kilsztajn; Manuela Santos; Gustavo Toshiaki; Lopes Sugahara

2003-01-01

147

LA HABITABILIDAD DESDE UNA PERSPECTIVA SUBJETIVA: EL CASO DE LA AGEB 010-9 DEL FRACCIONAMIENTO OJO DE AGUA, MUNICIPIO DE TECÁMAC, ESTADO DE MÉXICO  

Microsoft Academic Search

El crecimiento desmedido e incontenible de la Zona Metropolitana de la Ciudad de México en los últimos 50 años, concatenado a las políticas de liberalización y desregulación económicas ha conformado un espacio con grandes núcleos de concentración generando problemas de habitabilidad y calidad de vida para sus habitantes. El diagnosticar la habitabilidad de dichas zonas es un trabajo complejo, pues

Osvaldo Velázquez Mejía

2010-01-01

148

Satisfação de Idosos com Aparelhos Auditivos Concedidos no Estado do Tocantins Satisfaction of Elderly with Hearing Aid Conceded in Tocantins State  

Microsoft Academic Search

Method: Forty elderly hearing aid users were selected to complete the Satisfaction with Amplification in Daily Life scale. This self-report inventory was developed by COX and ALEXANDER (1999) and was translated into Portuguese and modified according to individual's reality. Besides the Satisfaction with Amplification in Daily Life questionnaire, additional tools were used to help better understand the factors that interfere

Janaina Santo; Amore de Carvalho

149

ESTUDIO PRELIMINAR DE LA INFLUENCIA DE LA COSTRA MICROBIÓTICA EN LOS SUELOS DE QUÍBOR, ESTADO LARA, VENEZUELA, MEDIANTE MICROANÁLISIS DE RAYOS-X (EDS)  

Microsoft Academic Search

A microbiotic crust, consisting photosynthetic organisms, develops in about the first 3mm of surface in the locality of Quíbor Lara state, Venezuela. The crust is constituted by algae, cyanobacteria, mosses (bryophytes) and lichens. The objective of this investigation is the determination of the chemical elements that compose the matrix of the soil with microbiotic crust in the interphases morphological soil-structure

150

LOS EFECTOS DEL RELAJAMIENTO SOBRE EL ESTADO DE ANSIEDAD Y EN LOS NIVELES DE IgA EN LA SALIVA DE MUJERES EN PUERPERIO  

Microsoft Academic Search

This experimental study aimed to evaluate the effect of relaxation techniques on anxiety levels, and the relation between anxiety and the concentration of Immunoglobulin A. The study was carried out in a maternity hospital in a city of the State of Espírito Santo, Brazil. The sample was composed of 60 puerperae. The information on the variables: age, education, marital status,

Cândida Caniçali Primo

151

Estado actual y recomendaciones sobre la utilización de los sistemas de monitorización continua de glucosa en niños y adolescentes con diabetes mellitus tipo 1  

Microsoft Academic Search

Glucose monitoring methods have made great advances in the last decade with the appearance of the continuous glucose monitoring systems (CGMS) that measure the glucose levels in the interstitial liquid, providing information about glucose patterns and trends, but do not replace the self-monitoring of capillary glucose.Improvement in diabetes control using the CGMS depends on the motivation and training received by

M. Torres Lacruz; R. Barrio Castellanos; B. García Cuartero; A. Gómez Gila; I. González Casado; F. Hermoso López; C. Luzuriaga Tomás; M. Oyarzabal Irigoyen; I. Rica Etxebarria; M. Rodríguez Rigual

2011-01-01

152

RESPOSTA A DOSES DE NITROGÊNIO E AVALIAÇÃO DO ESTADO NUTRICIONAL DO ARROZ IRRIGADO IRRIGATED RICE RESPONSE TO NITROGEN LEVELS AND ITS NUTRITIONAL STATE EVALUATION  

Microsoft Academic Search

Morphological and physiological characteristics of rice cultivars may influence nutrient amounts required by rice plants and their response to nitrogen (N) application. The objective of this study was to evaluate the response of two irrigated rice cultivars to nitrogen levels and its relation to nutritional plant state during the vegetative cycle, using a chlorophyll meter and a Leaf Color Chart

Leandro Souza da Silva; Humberto Bohnen; Elio Marcolin; Vera Regina; Mussoi Macedo

153

Resposta de fase aguda, subnutriÁªo e estado nutricional do ferro em adultos com AIDS Iron status, malnutrition and acute phase response in HIV-positive patients  

Microsoft Academic Search

Nutritional status and some iron metabolism parameters of acute phase response (APR) positive and APR-negative AIDS patients were studied. Twenty-nine AIDS patients were submitted to 24h food intake recall, anthropometry, and albumin, C-reactive protein (CRP), hemoglobin, ferritin, and total iron binding capacity (TIBC) measurements. Infection plus serum CRP > 7mg\\/dl were criteria for APR presence. Protein-energy malnutrition (PEM) was ascertained

Jacqueline Pontes Monteiro; Daniel Ferreira da Cunha; Freire de Carvalho da Cunha; Mário León Silva-Vergara; Dalmo Correia; Maria de Lourdes; Pires Bianchi

154

AVALIAÇÃO DO ESTADO QUÍMICO E ECOLÓGICO DOS CORPOS D' ÁGUA SOB O ENFOQUE DA NOVA DIRETRIZ DA ÁGUA DA UNIÃO EUROPÉIA  

Microsoft Academic Search

Desde os anos 90 existe um esforço da União Européia em promover a proteção ecológica dos corpos d'água. Com a nova Diretriz da Água do Parlamento Europeu e do Conselho, de 23 de Outubro de 2000, pela primeira vez, uma orientação ecológica foi atingida na União Européia. Várias ações estão sendo implementadas, dentre elas ressalta-se o estabelecimento de um plano

Alessandra Maciel; Maria do Carmo Sobral; Günter Gunkel

155

ESTADO NUTRIMENTAL Y CRECIMIENTO DE VITROPLANTAS DE CAÑA DE AZÚCAR EN RESPUESTA A REGULADORES DE CRECIMIENTO Nutritional Status and Growth of Sugarcane Vitroplants in Response to Growth Regulators  

Microsoft Academic Search

En este estudio se analizó la influencia de auxinas y citocininas en el contenido de nutrimentos y crecimiento vegetal de vitroplantas de caña de azúcar (Saccharum spp.) de la variedad ITV 92-1424. Se evaluaron dos factores: ácido indol-3-acético (AIA), como fuente de auxina, y N6-furfurilade nina (kinetina o KIN), como fuente de citocinina, con cinco niveles cada uno (0, 0.5,

Odón Castañeda-Castro; Fernando C. Gómez-Merino; Libia I. Trejo-Téllez; Miriam C. Pastelín-Solano; Yolanda Martínez-Ocampo; Marina Guevara-Valencia

2008-01-01

156

Análise Ecoepidemiológica da Incidência da Doença de Chagas em Abaetetuba, Barcarena e Bragança, no estado do Pará, entre 2000 e 2006, utilizando Geotecnologias Livres  

Microsoft Academic Search

The main propose of this paper is to demonstrate the ecoepidemiological analysis of the spatial distribution of vectors of Chagas's Disease in the municipalities of Abaetetuba, Barcarena and Bragança, in the state of Pará. Taking into account that the incidence of this disease is linked to human activities such as deforestation, agriculture for subsistence, among others. To achieve this goal

Cláudia Souza; Douglas Gasparetto; Cleice T. N. Souza; Nelson F. L. Soffiatti

157

Mapeamento da cobertura natural e uso da terra como subsidio ao estudo da dinâmica e ocupação do Estado do Tocantins entre 1990 e 2007  

Microsoft Academic Search

In the Amazon Region large areas of savannas and forests have been changing in pasture and agriculture that modify the environment resulting in environmental and economic problems. The Tocantins state has climatics and physicals features common with Amazon and the Brazil Central Region and it is a transiction zone. On the purpose of study the dynamic of coverage and land

Marco Aurélio Barros

158

Caracterização da vegetação no município de Marabá, no estado do Pará, através de dados e transformações espectrais (Índice de Vegetação por Diferença Normalizada) do sensor ETM+ \\/ Landsat 7  

Microsoft Academic Search

The objective of this work is to evaluate the spectral response of several vegetation physiognomies in the municipality of Maraba, Para, in relation to the reflectance in Landsat -7 ETM+ and to NDVI (\\

Adriana Gomes Affonso; Dalton de Morrison Valeriano; Getúlio Teixeira Batista

2005-01-01

159

LUMINA, una Cohorte de Pacientes con Lupus en Minorías Étnicas de Estados Unidos. ¿Qué Hemos Aprendido? LUMINA, a Multiethnic US Lupus Cohort What Have We Learned?  

Microsoft Academic Search

Systemic lupus erythematosus (SLE) tends to be a more serious disease (disease manifestations, disease activity, damage accrual and expected survival) among non-Caucasian populations. Distinctive biological and genetic features, as well as socioeconomic features play an important role in the discrepant course, and outcome of the disease among patients from different ethnic groups. To delineate the influence of these factors on

Mónica Fernández; Jaime Calvo-Alén; Qing Li; Gerald McGwin Jr; Luis M. Vilá; John D. Reveille; Graciela S. Alarcón

160

CAPACIDADE DE CARGA TURÍSTICA EM CAVERNAS: ESTADO-DA-ARTE E NOVAS PERSPECTIVAS 1 TOURIST CARRYING CAPACITY IN CAVES: STATE-OF-ART AND NEW PERSPECTIVES  

Microsoft Academic Search

This work presents some studies related to the behavioral and physical limits for tourism in Brazilian caves, as well as trends in current research on speleoturist carrying capacity. The methods of research were based on surveys including world examples for any comparisons with caves in Brazil. Three main approaches were found for the management of tourist caves: 1) control of

Heros Augusto; Santos Lobo; José Alexandre de Jesus; Paulo César

2009-01-01

161

DIFERENCIAS EN LAS CONDICIONES DE SALUD Y ENFERMEDAD EN LAS POBLACIONES RURALES Y URBANO-MARGINALES EN EL ESTADO DE NUEVO LEÓN  

Microsoft Academic Search

This work shows the results of two surveys taken in the state of Nuevo León, Mexico during 1985. The first survey, which covered morbidity and health service use, was taken from 759 households in urbanlsuburban Mon- terrey (a city of two million inhabitants and capital of the state of Nuevo León) and from 751 households from a stratified sample from

AXEL KROES; FERNANDO MALO; CARMEN PÉREZ SAMANIESO; HEINRICH BERG

162

Epileptic seizures in the elderly: II. Diagnostic problems.  

PubMed

Three principal diagnostic problems were encountered in a group of 81 elderly patients with epileptic seizures: Post-ictal paresis (Todd's palsy) occurred in 13 patients (16%), of whom seven had evidence of past or present cerebral infarction, and six no such evidence. The paresis lasted up to 4 days, and could be confused with recurrent infarction or a transient ischaemic episode. Ictal and post-ictal confusional states of 24 h or more duration (up to 7-8 days) were noted in 11 patients (14%). They occurred in association with normal intellectual function as well as with pre-existing dementia, and required to be distinguished from other causes of delirium. Two patients presented paroxysmal sensory phenomena of ictal type. The differential diagnosis of episodic pain in hemiplegic limbs is discussed. PMID:6803529

Godfrey, J W; Roberts, M A; Caird, F I

1982-02-01

163

Acute confusion in elderly medical patients.  

PubMed

The acute confusional state (delirium) is a common presentation for a wide variety of medical conditions in the elderly. This paper reports a prospective study of acute confusion in elderly people admitted to general medical services in two acute care hospitals in Edmonton, Alberta. Eighty patients were studied, ranging in age from 65-91. Acute confusion was seen in one-fourth of these patients, who tended to be older, more ill, more likely to have chronic cognitive impairment and a higher mortality rate. In patients admitted with confusion, infection and congestive heart failure predominated. In those who developed confusion after hospitalization, iatrogenic disease was more common. Confusion was a sensitive sign of physical illness, and its resolution accompanied recovery. A diagnosis of the cause of the confusion state could be made in 22 of 24 cases. These findings support the aggressive investigation and treatment of acute confusion in the elderly. PMID:2910973

Rockwood, K

1989-02-01

164

'An unusual response of dental sepsis to antibiotics: parallels with the Jarisch-Herxheimer reaction'.  

PubMed

Spreading odontogenic infections are a common source of hospital admissions to Oral and Maxillofacial Surgery (OMFS) units. This report describes an unusual reaction to routine treatment for a spreading odontogenic infection in a healthy male with no known allergies, requiring the patient to be managed supportively in the resuscitation room. The patient deteriorated rapidly after the administration of paracetamol, intravenous fluids, steroids and antibiotics, demonstrating delusional behaviour, fever, rigors, tachycardia and hypoxia. Fever associated with sepsis can lead to confusional states, but similar symptoms have been described in the literature as a reaction to antibiotic therapy known as Jarisch-Herxheimer (J-H) reaction. This is potentially the first time a J-H like reaction has been described in the context of dental sepsis. The authors feel that the OMFS team should be aware of possible sequelae of medical therapy in patients with acute dental sepsis and be confident in their management of these complications. PMID:22707695

Moss, Helen; Collier, Jonathan Marc; Collier, Sophie

2012-06-14

165

Propranolol in the Control of Schizophrenic Symptoms  

PubMed Central

All schizophrenic symptoms remitted completely in six out of 14 adults who had not responded to phenothiazine drugs and who were then given propranolol. Another patient improved markedly and four improved moderately. Two had minimal or transient improvement, and one left hospital unchanged after a short, severe, toxic reaction. The six with complete remissions all began to improve within a few days of starting propranolol and the florid symptoms remitted completely after three to 26 days. They were stabilized on a daily dose of 500-3,500 mg of propranolol and at the time of writing had remained well for up to six months. Two patients who stopped propranolol after their symptoms remitted relapsed severely within a few days. Toxic effects (ataxia, visual hallucinations, and confusional states) were related to the rate of increase rather than to the absolute dose of propranolol. After the procedure was modified unwanted effects were usually mild or absent.

Yorkston, N. J.; Zaki, Saniha A.; Malik, M. K. U.; Morrison, R. C.; Havard, C. W. H.

1974-01-01

166

Review of the possible relationship and hypothetical links between attention deficit hyperactivity disorder (ADHD) and the simple sleep related movement disorders, parasomnias, hypersomnias, and circadian rhythm disorders.  

PubMed

Recent evidence has been accumulating that the sleep of individuals with attention deficit hyperactivity disorder (ADHD) is not only disrupted in a nonspecific way but that ADHD has an increased association with simple sleep related movement disorders such as restless legs syndrome/periodic limb movements in sleep (RLS/PLMS), rhythmic movement disorder (body rocking and head banging), and parasomnias, such as disorders of partial arousal (sleep walking, sleep terrors, and confusional arousals). In addition increased associations have been reported between ADHD and hypersomnias such as narcolepsy and sleep apnea as well as circadian rhythm disorders, such as delayed sleep phase syndrome. These relationships are reviewed and the implications for such associations are explored. Patients with sleep disorders should be queried about the symptoms of ADHD and vice versa. PMID:19110891

Walters, Arthur S; Silvestri, Rosalia; Zucconi, Marco; Chandrashekariah, Ranju; Konofal, Eric

2008-12-15

167

Seizures in the life and works of Edgar Allan Poe.  

PubMed

Edgar Allan Poe, one of the most celebrated of American storytellers, lived through and wrote descriptions of episodic unconsciousness, confusion, and paranoia. These symptoms have been attributed to alcohol or drug abuse but also could represent complex partial seizures, prolonged postictal states, or postictal psychosis. Complex partial seizures were not well described in Poe's time, which could explain a misdiagnosis. Alternatively, he may have suffered from complex partial epilepsy that was complicated or caused by substance abuse. Even today, persons who have epilepsy are mistaken for substance abusers and occasionally are arrested during postictal confusional states. Poe was able to use creative genius and experiences from illness to create memorable tales and poignant poems. PMID:10369317

Bazil, C W

1999-06-01

168

Neuropsychiatric systemic lupus erythematosus in elderly people: a case series.  

PubMed Central

Five elderly patients presenting with neuropsychiatric systemic lupus erythematosus were referred to the sectorised psychiatry service of the department of health care of the elderly. They represented 2% of patients admitted over a period of two years. Two patients presented with a subacute confusional state, two with dementia, and one with depression. Three patients responded well to treatment. This suggests that systemic lupus erythematosus (SLE) is more common in elderly people than was originally thought and is a potentially treatable cause of organic brain disorder. The absence of reports of elderly patients with SLE is likely to be due to the continued application of the American Rheumatism Association's revised 1982 classification criteria, which are inappropriate for this population.

Dennis, M S; Byrne, E J; Hopkinson, N; Bendall, P

1992-01-01

169

[Severe hyponatremia during treatment with fluoxetine].  

PubMed

Serotonin reuptake inhibitors, used as antidepressants, may cause hyponatremia due to a syndrome of inappropriate antidiuretic hormone, specially in elders. Thirty cases with such complication have been reported in the last six years. We report a 76 years old female with a hypertensive cardiopathy and paroxysmal atrial fibrillation treated with amlodipine and sotalol. Five days after starting fluoxetine, the patient presented with a confusional state, gait instability and tremor. Laboratory assessment disclosed a plasma sodium of 115 meq/L. Fluoxetine was discontinued and fluids were restricted. The clinical condition of the patient improved and hyponatremia abated. Hyponatremia must be born in mind as a potential side effect of serotonin reuptake inhibitors. PMID:10436720

Miranda, M; Armijo, G; Miranda, P

1999-03-01

170

[Elderly patient in an intensive critical unit].  

PubMed

Admission of elderly patients to intensive care units (ICU) is an increasing phenomenon. The severity of the disease causing admission and the basal functional patient's status are conditions more important than age to predict mortality and long term functional outcome. Studies demonstrate that elderly ICU survivors recover after discharge the majority part of their functional capability and perception of quality of life. On the contrary, these patients develop higher number of geriatric syndromes, mainly confusional syndrome. The culture of geriatric comprehensive assessment should be implemented in ICU and especially after discharge. The use of simple and validates scales (Barthel's Index, Lawton's Index and EuroQol-5D...) must be incorporated into the clinical practice. This is a good tool that could be useful for the specialists involved in the usually difficult decision of whether an elderly patient should or not be admitted to an ICU. PMID:19464761

López-Soto, Alfonso; Sacanella, Emilio; Pérez Castejón, Juan Manuel; Nicolás, José M

2009-05-22

171

Neuropsychiatric manifestations of methyl iodide  

PubMed Central

Methyl iodide is a monohalomethane and with a chemical formula CH3I. Acute exposures to methyl iodide have frequently occurred in the workplace. Predominantly, neuropsychiatric symptoms of acute exposure to monohalomethanes consist of headache, nausea, vomiting, drowsiness, dizziness, giddiness, diarrhea, confusion, ataxia, slurred speech, paralysis, convulsions, delirium, coma, and death. We report two cases who presented to our emergency services after accidental exposure to methyl iodide for a short duration. These case reports highlighted concurrence of frankly psychotic features and acute confusional state in workers vulnerable to industrial exposure to toxic chemicals. Understanding the mechanism of neuro-toxicity will perhaps throw some light on co-existence of both psychiatric and neurological symptoms. Awareness of these toxic effects at vulnerable work places will lead to timely and appropriate interventions. Importance of safety precautions and education of both workers and supervisors cannot be overemphasized here

Parkar, Shubhangi R.; Mayanil, Tushita S.

2012-01-01

172

[Interhemispheric disconnection, Balint's syndrome and persistent anarthria: Marchifava-Bignami disease with white matter hemorrhage].  

PubMed

A 37-year-old alcoholic right-handed man developed a complex neuropsychological picture following a mild head injury and a severe confusional state. Prominent features were Balint's syndrome, signs of interhemispheric deconnection, and speech disorders with anarthria and dysprosody. Iterative CT scans showed pathognomonic hypodensities of the genu and splenium of corpus callosum, confirmative of Machiafava-Bignami disease. After a two years follow-up, a favourable outcome was observed despite haemmoragic transformation of bilateral necrotic lesions of the parietal white matter, an exceptional neuropathological fact. This case is demonstrative of the possibility of articulate speech impairment when lesions of both corpus callosum and subcortical white matter are present. It also raises several aetiopathogenic problems which are discussed. PMID:8761627

Truffert, A; Dumas, J J; Dandelot, J B

1996-03-01

173

ÍNDICES DE SÍTIOS PARA Hovenia dulcis Thunberg NA REGIÃO CENTRAL DO ESTADO DO RIO GRANDE DO SUL, BRASIL SITES INDEX FOR Hovenia dulcis Thunberg IN THE CENTRAL REGION OF THE STATE OF RIO GRANDE DO SUL, BRAZIL  

Microsoft Academic Search

The main objective of this work is to study the index forest sites build, for the dominant height, of populations located in the central area of the state of Rio Grande do Sul. To do that, information from 3 stands located at FEPAGRO was used. To construct the curves index sites forest, information from 18 dominant trees was collected in

Gerson Luiz Selle; Frederico Dimas Fleig; Elisabete Vuaden; Evaldo Muñoz Braz

2009-01-01

174

Revisión y estado de conservación de la flora briológica de la Sierra de Peña Sagra (Cordillera Cantábrica, España). Revision and conservation status of the bryological flora from Sierra de Peña Sagra (Cordillera Cantábrica, Spain  

Microsoft Academic Search

Se analiza el porcentaje de especies de briófitos amenazados del catálogo de la Sierra de Peña Sagra (Cantabria). Se aportan 4 nuevos taxones a la Lista Roja de Briófitos de la Península Ibérica: Anastrepta orcadensis, Plagiochila spinulosa, Orthotrichum consimile y Sphagnum brevifolium. Se plantea el cambio de categoría de amenaza de Bazzania tricrenata. Se propone la inclusión de esta zona

Gisela Oliván Martínez; Esther Fuertes Lasala; M. Acón

2003-01-01

175

Anthropically dislodged assemblages of sponges (Porifera: Demospongiae) in the River Araguaia at Araguatins, Tocantins State, Brazil Assembléias de esponjas desalojadas no Rio Araguaia em Araguatins, Estado do Tocantins, Brasil  

Microsoft Academic Search

A recent outbreak of an human ocular disease at Araguaia River by the town of Araguatins, TO, Central Amazonia, along the low water period of 2005 required pathological analyses of surgically extracted ocular tissues. Spicules which invest the gemmules of the freshwater sponges Drulia uruguayensis and D. ctenosclera were found inside these ocular materials. Such relation between an ocular disease

C. Volkmer-Ribeiro; Salvador França; Rodovia Washington Luís

176

Estado nutricional e carência de ferro em crianças freqüentadoras de creche antes e 15 meses após intervenção nutricional Nutritional status and iron deficiency among children enrolled in a day care center before and after 15 months of nutritional management  

Microsoft Academic Search

Objective: To compare the nutritional status and the preva- lence of iron deficiency among children enrolled in a day care center before and after 15 months of nutritional management. Methods: Cohort study of 52 children, aged 32 to 78 months, evaluated before and after treatment of anemia and nutritional disturbs in a no-profit day care center in Catan- duva, São

Terezinha Soares Biscegli; Carlos Elysio; C. Corrêa; João Romera; André Binotti Candido

2008-01-01

177

Integração de Dados Aerogeofísicos Gamaespectométricos e Altimétricos do SRTM (Shuttle Radar Topography Mission) a imagens do Sensor LANDSAT7 ETM+ utilizando-se a adição de bandas em RGB em área da Folha Garanhuns, Estado de Pernambuco, Nordeste Brasileiro  

Microsoft Academic Search

A methodology of data integration using aerogeophysical and altimetry data from STRM with the first Principal Component of LANDSAT 7 ETM+, applied in the area of Garanhuns Sheet (SC.24-X-B, 18.000 km2 in Northeastern Brazil), is the scope of this paper. This methodology has been developed to support the geological mapping of the area. A greater control concerning the STRM and

Carlos Eugênio da Silveira Arraes

178

CONTAMINACIÓN DE SUELOS CON HUEVOS DE Toxocara spp. (NEMATODA, ASCARIDIDA) EN PARQUES PÚBLICOS DE LA CIUDAD DE CORO, ESTADO FALCÓN, VENEZUELA. Soil Contamination With Toxocara spp. Eggs (Nematoda, Ascaridida) in Public Parks From Coro City, Falcon State, Venezuela  

Microsoft Academic Search

A descriptive and transversal survey to establish contamination with Toxocara spp. eggs of soils from 38 public parks of the city of Coro, Falcon State, Venezuela, was carried out between February-March 2004. The soil samples were parasitologically processed using the technique of flotation with NaCl (modified Willis-Molloy). Texture, salinity (electric conductivity) and pH of the soils were also analyzed. Toxocara

Dalmiro José Cazorla Perfetti; Pedro Morales Moreno; María Eugenia; Acosta Quintero

179

NUEVO FOCO DE INFECCIÓN DE Oxyspirura mansoni EN GALLOS DE PELEA DE MUNICIPIOS DEL ESTADO ZULIA, VENEZUELA. New Focal Infection of Oxyspirura mansoni in Gamecock of Municipalities of Zulia State, Venezuela  

Microsoft Academic Search

The purpose of this research was to determine the existence of the source of an Oxispirurosis infection which ethiological agent is a nematode known as Thelaziidae: Oxyspirura man- soni (Cobbold, 1869). This nematode is responsible of ocular filariosis of birds. This study is related with gamecock birds lo- cated in the following Municipalities: Maracaibo, San Fran- cisco, Jesus Enrique Lossada

Nelly M. de Chirinos; Angel R. Chirinos; Jorge Briceño; Marvin Molina

180

CORRELAÇÃO ENTRE AS CAPACIDADES FÍSICAS BÁSICAS E O ÍNDICE DE CAPACIDADE DE TRABALHO EM BOMBEIROS DO ESTADO DO RIO DE JANEIRO Correlation between basic physical capacities and the work capacity index in firefighters of the state of rio de janeiro  

Microsoft Academic Search

The purpose of this experiment was to investigate the basic physical characteristics of a military firefighter of Corpo de Bombeiro Militar do Rio de Janeiro (CBMRJ) and to correlate the physical fitness level with the work capacity index (WCI). Participants of this study were 14 military firefighters (33 ± 4 years; 179 ± 0.07 cm; 83.4 ± 11.6 kg) students

EDUCAÇÃO FÍSICA; Cristiano Marcelino; Roberto Simão; Raphael Guimarães; Belmiro Freitas de Salles; Juliano Spineti

2009-01-01

181

CARACTERIZACIÓN FÍSICA Y QUÍMICA DEL FRUTO DE CARDÓN DE DATO DE LOS MUNICIPIOS TORRES Y JIMÉNEZ, ESTADO LARA, VENEZUELA PHYSICAL AND CHEMICAL CHARACTERIZATION OF THE CACTI FRUITS OF THE MUNICIPALITY TORRES AND JIMENEZ, LARA STATE, VENEZUELA  

Microsoft Academic Search

SUMMARY In Lara state, the semiarid zones represent approximately 52% of the total territory. Among the xerophytes plants found in the area can be mentioned the cactus Lemaireo- cereus griseus (Haw) Britt & Rose. This plant is well adapted to soil and climate conditions. The fruits from this plant represents a source of feeding for local people and showed a

Yanira Terán; Ramón D'Aubeterre; María P. de Camacaro

2008-01-01

182

COMPOSICIÓN QUÍMICA del PASTO AGUJA (brachiaria humidìcola) SOMETIDA A PASTOREO EN UNA FINCA DEL MUNICIPIO GUANARE ESTADO PORTUGUESA Chemical composition of Brachiaria humidicola grazed into a farm in Guanare, Portuguesa state, Venezuela  

Microsoft Academic Search

In order to evaluate the chemical composition of Brachiaria humidicola in a farm of Guanare, Portuguesa state, eight samples were taken monthly by means of metallic frame (0.5 x 0.5), and dried off at 60 ºC during 48 h, for dry matter estimation. Each sample was divided in two components: (PI) the plant as a whole, (H) just leaves. Proximal

Adelis Arias; Helber Hernández

2002-01-01

183

ANÃLISIS DE RENTABILIDAD DE UN SISTEMA DE PRODUCCIÓN DE HONGO SETA BAJO CONDICIONES DE INVERNADERO, EN EL MUNICIPIO DE AMOZOC DE MOTA EN EL ESTADO DE PUEBLA  

Microsoft Academic Search

The profitability of a production system of oyster mushrooms was evaluated under conditions of greenhouse with a surface of 112 m2 located in San Salvador Chachapa, pertaining to the municipality of Amozoc de Mota in the state of Puebla. The indicators of economic evaluation were used: net present value (NPV), relation benefit-cost (B\\/C), relation net benefitinvestment (N\\/K) and internal rate

Omar Romero Arenas; J. Manuel Barrios Diaz; A. Macias Lopez; A. Simon Baez; A. Ibanez Martinez; F. Juarez Huerta

2009-01-01

184

Factors influencing tropical island freshwater fishes:Species, status, and management implications in puerto rico [Factores que influencian a los peces tropicales de agua dulce: Especies, estado actual e implicaciones para el manejo en Puerto Rico  

USGS Publications Warehouse

Anthropogenic effects including river regulation, watershed development, contamination, and fish introductions have substantially affected the majority of freshwater habitats in Europe and North America. This pattern of resource development and degradation is widespread in the tropics, and often little is known about the resources before they are lost. This article describes the freshwater resources of Puerto Rico and identifies factors that threaten conservation of native fishes. The fishes found in freshwater habitats of Puerto Rico represent a moderately diverse assemblage composed of 14 orders, 29 families, and 82 species. There are fewer than 10 species of native peripherally-freshwater fish that require a link to marine systems. Introductions of nonindigenous species have greatly expanded fish diversity in freshwater systems, and native estuarine and marine species (18 families) also commonly enter lowland rivers and brackish lagoons. Environmental alterations, including land use and development, stream channelization, pollution, and the impoundment of rivers, combined with nonnative species introductions threaten the health and sustainability of aquatic resources in Puerto Rico. Six principal areas for attention that are important influences on the current and future status of the freshwater fish resources of Puerto Rico are identified and discussed.

Wesley, Neal, J.; Lilyestrom, C. G.; Kwak, T. J.

2009-01-01

185

Estudos de Fraturamentos Para Pesquisa de Agua Subterranea No Estado de Sergipe COM Produtos de Sensoriamento Remoto (Study of Fracturing for Groundwater Research in the Sergipe State with Remote Sensing Products).  

National Technical Information Service (NTIS)

For groundwater prospecting in Sergipe Crystalline Complex, a systematic interpretation of the remote sensing data was conducted and enabled the delineation of some potential areas for groundwater exploration in the future. The method used includes the an...

O. Souzasampaio J. Tavaresdemattos P. Veneziani

1986-01-01

186

SUSCEPTIBILIDAD A INSECTICIDAS EN POBLACIONES DE Plutella xylostella (L.) (LEPIDOPTERA: PLUTELLIDAE) DEL ESTADO DE GUANAJUATO, MÉXICO SUSCEPTIBILITY TO INSECTICIDES IN POPULATIONS OF Plutella xylostella (L.) (LEPIDOPTERA: PLUTELLIDAE) FROM THE STATE OF GUANAJUATO, MÉXICO  

Microsoft Academic Search

Considering that Plutella xylostella (L.) is the most important pest of cruciferous crops in the State of Guanajuato, susceptibility of early third instar larvae of P. xylostella to emamectin benzoate, indoxacarb, fipronil, and spinosad was determined in three insect populations (North, West, and East) of the State of Guanajuato and in one susceptible population in the laboratory. The values of

Roberto Barrera-Urzúa; Rafael Bujanos-Muñiz; J. Concepción Rodríguez-Maciel; Gustavo Mora-Aguilera; Miguel Á. Martínez-Téllez; Centro de Investigación

187

Evolução do estado nutricional de crianças com mielomeningocele em período de três anos Tree-year period evolution of the nutritional condition of children with mielomeningocelis Evolución en tres años de la condición nutricional de niños con mielomeningocele  

Microsoft Academic Search

RESumo: O presente manuscrito teve o objetivo de descrever e classificar o perfil antropométrico, de forma longitudinal, de um grupo de crianças com mielomeningocele inserido em um programa especial de atividades físicas. Vinte e quatro crianças com mielomeningocele foram avaliada em três momentos, com intervalo de um ano entre os mesmos. Foram avaliados: peso, comprimento, e calculado o IMC (índice

Cynthia Müller Coelho; Elizabeth Miyeko Egashira; Regina Célia da Silva; Sandra Maria Lima Ribeiro

188

IMPACTO DE LA DENSIDAD DE GATUÑO (MIMOSA MONANCISTRA) EN LA MICROFLORA DE SUELOS DEL SEMIÁRIDO DEL ESTADO DE AGUASCALIENTES IMPACT OF THE DENSITY OF CATCLAW (MIMOSA MONANCISTRA) ON THE MICROFLORA OF SEMIARID SOILS FROM AGUASCALIENTES  

Microsoft Academic Search

SUMMARY The impact of different densities of a native shrub legume known as cat claw (Mimosa monancistra) was determine, over the abundance and activity of the microbial flora located in and out side the canopy. Such impact was determine by means of the carbon content of microbial biomass, total amount of microorganisms (bacteria, fungus and actinomycets) and the inorganic nitrogen

Jaime A. Félix-Herrán; María V. Angoa-Pérez; Rosalinda Serrato-Flores; Víctor Olalde-Portugal

2007-01-01

189

The effect of motor activity on improved memory and The effect of motor activity on improved memory and emotional well-being in elderly women. emotional well-being in elderly women. Influencia de la actividad motora en la mejora de la memoria y Influencia de la actividad motora en la mejora de la memoria y del estado de ánimo emocional de mujeres mayores. del estado de ánimo emocional de mujeres mayores  

Microsoft Academic Search

This study researches the effect of a wide range of different types of intervention (cognitive versus cognitive + motor versus non-intervention) on the memory and mental state of elderly women complaining of memory loss and leading a sedentary life. Subjects (N=102, 80% women, age M\\/SD = 76\\/5 years) were distributed randomly into the three treat- ment groups. The cognitive training

Carmen Requena Hernández; Marta Zubiaur González; Alberto Fernández Lucas; Tomas Ortiz Alonso

190

Política de incentivos governamentais na Paraíba- implicações sobre o desenvolvimento industrial e a geração de empregos (1988-2003)  

Microsoft Academic Search

Neste trabalho foi analisada a política de incentivos governamentais adotada pelo estado da Paraíba no período 1988-2003, como forma de se inserir no contexto da guerra fiscal. Verificou-se que a Paraíba foi um dos estados beneficiados pelo processo de desconcentração industrial verificado na economia brasileira, durante a década de 90 e início dos anos 2000, já que este Estado apresentou

Patrick Morais Brasil

191

Cultural Considerations in the Development of Pediatric Weight Management Interventions  

Microsoft Academic Search

Over the last 20 years, the prevalence of overweight and obesity have increased dramatically in U.S. adults across racial\\/ethnic\\u000a groups, and in both males and females of all age groups (Agudo & Pera, 1999; Center for Disease Control, 1997; Eberhardt et\\u000a al., 2001; Kuczmarski & Flegal, 2000; Mokad et al., 1999; Ogden et al., 2006). Youth of diverse ethnic backgrounds,

Dawn K. Wilson; Heather Kitzman-Ulrich

192

NUTRIENT CYCLING IN Eucalyptus AND Pinus PLANTATIONS ECOSYSTEMS: SILVICULTURAL IMPLICATIONS  

Microsoft Academic Search

Distribution and movement of mineral nutrients (N, P, K, Ca and Mg) were studied in an 11 years old stand of Eucalyptus saligna and in a 14 years old stand of Pinus caribaea var. hondurensis, located respectively near Piracicaba and near Agudos (State of São Paulo -Brazil). In the E. saligna stand annual mean leaf-fall was 4,490 kg\\/ha with 27.3

FABIO POGGIANI

193

Drug-induced cognitive impairment in the elderly.  

PubMed

Elderly people are more likely than younger patients to develop cognitive impairment as a result of taking medications. This reflects age- and disease-associated changes in brain neurochemistry and drug handling. Delirium (acute confusional state) is the cognitive disturbance most clearly associated with drug toxicity, but dementia has also been reported. The aetiology of cognitive impairment is commonly multifactorial, and it may be difficult to firmly establish a causal role for an individual medication. In studies of elderly hospital patients, drugs have been reported as the cause of delirium in 11 to 30% of cases. Medication toxicity occurs in 2 to 12% of patients presenting with suspected dementia. In some cases CNS toxicity occurs in a dose-dependent manner, often as a result of interference with neurotransmitter function. Drug-induced delirium can also occur as an idiosyncratic complication. Finally, delirium may occur secondary to iatrogenic complications of drug use. Almost any drug can cause delirium, especially in a vulnerable patient. Impaired cholinergic neurotransmission has been implicated in the pathogenesis of delirium and of Alzheimer's disease. Anticholinergic medications are important causes of acute and chronic confusional states. Nevertheless, polypharmacy with anticholinergic compounds is common, especially in nursing home residents. Recent studies have suggested that the total burden of anticholinergic drugs may determine development of delirium rather than any single agent. Also, anticholinergic effects have been identified in many drugs other than those classically thought of as having major anticholinergic effects. Psychoactive drugs are important causes of delirium. Narcotic agents are among the most important causes of delirium in postoperative patients. Long-acting benzodiazepines are the commonest drugs to cause or exacerbate dementia. Delirium was a major complication of treatment with tricyclic antidepressants but seems less common with newer agents. Anticonvulsants can cause delirium and dementia. Drug-induced confusion with nonpsychoactive drugs is often idiosyncratic in nature, and the diagnosis is easily missed unless clinicians maintain a high index of suspicion. Histamine H2 receptor antagonists, cardiac medications such as digoxin and beta-blockers, corticosteroids, non-steroidal anti-inflammatory agents and antibiotics can all cause acute, and, less commonly, chronic confusion. Drug-induced confusion can be prevented by avoiding polypharmacy and adhering to the saying 'start low and go slow'. Special care is needed when prescribing for people with cognitive impairment. Early diagnosis of drug-induced confusion, and withdrawal of the offending agent or agents is essential. PMID:10459729

Moore, A R; O'Keeffe, S T

1999-07-01

194

Lifetime prevalence and incidence of parasomnias in a population of young adult Nigerians.  

PubMed

Lifetime prevalence, incidence, and risk factors for parasomnias were determined. Past experiences of non-REM, REM, and sleep-transition parasomnias were recorded. Diaries of night sleep duration, parasomnias, perception of aliens, levels of physical activity, headaches and intake of all substances, drugs, and tobacco were kept for 14 consecutive days. A total of 276 subjects were studied. Lifetime prevalences (95% CI) were 725 (668-776) for occurrence of any parasomnia, 43 (25-74) for sleepwalking, 112 (80-155) for sleep terror, 475 (416-533) for nightmares, 225 (179-277) for sleep paralysis, 43 (25-74) for sleep starts, 322 (270-380) for sleep talking, and 344 (291-402) for enuresis. Incidences (95% CI) were 210 (166-262) for occurrence of any parasomnia, 14 (6-37) for sleepwalking, 11 (4-31) for sleep terror, 170 (131-219) for confusional arousal, 18 (8-42) for nightmares, 14 (6-37) for sleep paralysis, 33 (17-61) for sleep starts, and 4 (1-20) for sleep enuresis. Multivariate analysis showed associations of increase occurrence of parasomnias and duration of sleep >7 h (p < 0.05) and intake of alcohol (p < 0.001), but heavy workload before sleep was associated with decreased occurrence of parasomnias (p < 0.01). Gender, smoking, caffeinated drinks, hypnotics, and headaches were not associated with parasomnias. Incidence of presence of aliens (95% CI) in the room was 25(0/infinity) (12-51). This study shows that more than 70% of the population have experienced parasomnias at any time in the past. Nightmares, enuresis, sleep paralysis and night terrors are the commonest parasomnias experienced in the past, while confusional arousal, sleep starts, and nightmares are the commonest parasomnias currently experienced. Incidence estimates show that all parasomnias persist into adulthood at reduced rates, but reduction of occurrence was greatest for enuresis. Long duration of night sleep and intake of alcohol predisposed subjects to higher occurrence of parasomnias. PMID:20143107

Oluwole, O S A

2010-02-09

195

Delirium: a symptom of how hospital care is failing older persons and a window to improve quality of hospital care.  

PubMed

Delirium, or acute confusional state, which often results from hospital-related complications or inadequate hospital care for older patients, can serve as a marker of the quality of hospital care. By reviewing five pathways that can lead to a greater incidence of delirium--iatrogenesis, failure to recognize delirium in its early stages, attitudes toward the care of the elderly, the rapid pace and technological focus of health care, and the reduction in skilled nursing staff--we identify how future trends and cost-containment practices may exacerbate the problem. Examining delirium also provides an opportunity to improve the quality of hospital care for older persons. Interventions to reduce delirium would need to occur at the local and national levels. Local strategies would include routine cognitive assessment and the creation of systems to enhance geriatric care, such as incentives to change practice patterns, geriatric expertise, case management, and clinical pathways. National strategies might include providing education for physicians and nurses to improve the recognition of delirium and the awareness of its clinical implications, improving quality monitoring systems for delirium, and creating environments to facilitate the provision of high-quality geriatric care. PMID:10335730

Inouye, S K; Schlesinger, M J; Lydon, T J

1999-05-01

196

Cognitive activity limitations one year post-trauma in patients admitted to sub-acute rehabilitation after severe traumatic brain injury.  

PubMed

Objective: To examine cognitive activity limitations and predictors of outcome 1 year post-trauma in patients admitted to sub-acute rehabilitation after severe traumatic brain injury. Subjects: The study included 119 patients with severe traumatic brain injury admitted to centralized sub-acute rehabilitation in the Eastern part of Denmark during a 5-year period from 2005 to 2009. Methods: Level of consciousness was assessed consecutively during rehabilitation and at 1 year post-trauma. Severity of traumatic brain injury was classified according to duration of post-traumatic amnesia. The cognitive subscale of Functional Independence MeasureTM (Cog-FIM) was used to assess cognitive activity limitations. Multivariate logistic regression analyses were performed to identify predictors of an independent level of functioning. Results: The majority of patients progressed to a post-confusional level of consciousness during the first year post-trauma. At follow-up 33-58% of patients had achieved functional independence within the cognitive domains on the Cog-FIM. Socio-economic status, duration of acute care and post-traumatic amnesia were significant predictors of outcome. Conclusion: Substantial recovery was documented among patients with severe traumatic brain injury during the first year post-trauma. The results of the current study suggest that absence of consciousness at discharge from acute care should not preclude patients from being referred to specialized sub-acute rehabilitation. PMID:24002314

Sommer, Jens Bak; Norup, Anne; Poulsen, Ingrid; Morgensen, Jesper

2013-09-01

197

Post-traumatic amnesia.  

PubMed

Of patients hospitalised for traumatic brain injury (TBI), most pass through a state of altered consciousness known as "post-traumatic amnesia" (PTA). Despite the lack of a consistent definition, PTA is widely used as a construct in neurosurgical practice to guide decision-making and prognosis. Accurate PTA assessment is important, because over-evaluation leads to excess social, financial and opportunity costs, whilst under-evaluation risks patient welfare. Whilst anterograde memory is certainly disrupted in PTA, PTA in fact involves a far more extensive memory disturbance. More instructively, the complete "post-TBI syndrome" also comprises an extensive cognitive deficit which includes a confusional state, as well as a behavioural disturbance characterised by acute agitation. Recently, impairments in attention and executive functioning have also been emphasised; indeed, some consider these the primary disturbance with PTA. Although all of these features were fully described (or implied) by the earliest pioneers, most current PTA scores do not assess the complete "post-TBI syndrome". Currently, the Westmead PTA scale (WPTAS) directs most in-hospital TBI management throughout Australasia: however, in addition to general defects, specific limitations have been identified in the levels of evidence for WPTAS validity. We review the literature regarding PTA and, in particular, the continued role of the WPTAS in directing neurosurgical practice. PMID:23791248

Marshman, Laurence A G; Jakabek, David; Hennessy, Maria; Quirk, Frances; Guazzo, Eric P

2013-06-20

198

Sleep and Epilepsy: Strange Bedfellows No More  

PubMed Central

Ancient philosophers and theologians believed that altered consciousness freed the mind to prophesy the future, equating sleep with seizures. Only recently has the bidirectional influences of epilepsy and sleep upon one another received more substantive analysis. This article reviews the complex and increasingly recognized interrelationships between sleep and epilepsy. NREM sleep differentially activates interictal epileptiform discharges during slow wave (N3) sleep, while ictal seizure events occur more frequently during light NREM stages N1 and N2. The most commonly encountered types of sleep-related epilepsies (those with preferential occurrence during sleep or following arousal) include frontal and temporal lobe partial epilepsies in adults, and benign epilepsy of childhood with centrotemporal spikes (benign rolandic epilepsy) and juvenile myoclonic epilepsy in children and adolescents. Comorbid sleep disorders are frequent in patients with epilepsy, particularly obstructive sleep apnea in refractory epilepsy patients which may aggravate seizure burden, while treatment with nasal continuous positive airway pressure often improves seizure frequency. Distinguishing nocturnal events such as NREM parasomnias (confusional arousals, sleep walking, and night terrors), REM parasomnias including REM sleep behavior disorder, and nocturnal seizures if frequently difficult and benefits from careful history taking and video-EEG-polysomnography in selected cases. Differentiating nocturnal seizures from primary sleep disorders is essential for determining appropriate therapy, and recognizing co-existent sleep disorders in patients with epilepsy may improve their seizure burden and quality of life.

St. Louis, Erik K.

2012-01-01

199

Encephalopathy and liver transplantation.  

PubMed

Liver transplantation (LT) candidates experience frequently episodic or persistent hepatic encephalopathy. In addition, these patients can exhibit neurological comorbidities that contribute to cognitive impairment in the pre-transplant period. Assessment of the respective contribution of hepatic encephalopathy or comorbidities in the cognitive manifestations is critical to estimate the neurological benefits of restoring liver function. Magnetic resonance imaging and spectroscopy are useful to assess the impact of liver failure or comorbidities. This assessment is critical to decide liver transplant in difficult cases. In the early postoperative period, LT is commonly complicated by a confusional syndrome. The possible role of persisting hepatic encephalopathy in its development has not been clearly established. The origin is usually considered multifactorial and relates to complications following LT, such as infections, rejection, primary liver dysfunction, immunosuppressors, etc.… The diagnosis and treatment is based in the recognition of comorbidities and optimal care of metabolic disturbances. Several studies have demonstrated recovery of cognitive function after LT in patients that have exhibited hepatic encephalopathy. However, some deficits may persist specifically among patients with persistent HE. Other factors present before LT that contribute to a worse neuropsychological outcome after LT are diabetes mellitus and alcohol consumption. Long-term after LT, cognitive function may worsen in relation to vascular risk factors. PMID:23154925

Chavarria, Laia; Cordoba, Juan

2012-11-16

200

[Hypodermoclysis, a neglected approach].  

PubMed

Patients with advanced cancer frequently present with chronic nausea, emesis, bowel obstruction, confusional syndromes or dysphagia. All these conditions make it difficult for the patient to take oral medications or to maintain an adequate level of hydration by mouth. Hypodermoclysis is a safe and simple method that allows for cost-effective sucutaneous delivery of fluids and drugs. Hypodermoclysis has some clearcut advantages over the i.v. route. It can be started without need for a physician or a nurse, does not immobilize a limb, can be stopped and restarted at any moment without concern for clotting, and its use sparses nursing time. It also allows for easier and safer home discharge. Potentiel side effects of hypodermoclysis include pain at infusion site, sloughing tissues as a result of insufficient fluid absorption, infection, and puncture of vessels with bleeding. This paper gives some guidelines for the use of hypodermoclysis for fluid, electrolytes and drugs frequently used in a palliative care setting. The controversy surrounding the treatment of dehydration in the terminally ili is also briefly examined. PMID:9805967

Mancini, I; Body, J J

1998-09-01

201

Nonepileptic paroxysmal sleep disorders.  

PubMed

Events occurring during nighttime sleep in children can be easily mislabeled, as witnesses are usually not immediately available. Even when observers are present, description of the events can be sketchy, as these individuals are frequently aroused from their own sleep. Errors of perception are thus common and can lead to diagnosis of epilepsy where other sleep-related conditions are present, sometimes initiating unnecessary therapeutic interventions, especially with antiepileptic drugs. Often not acknowledged, paroxysmal nonepileptic behavioral and motor episodes in sleep are encountered much more frequently than their epileptic counterpart. The International Classification of Sleep Disorders (ICSD) 2nd edition displays an extensive list of such conditions that can be readily mistaken for epilepsy. The most prevalent ones are reviewed, such as nonrapid eye movement (NREM) sleep parasomnias, comprised of sleepwalking, confusional arousals and sleep terrors, periodic leg movements of sleep, repetitive movement disorders, benign neonatal myoclonus, and sleep starts. Apnea of prematurity is also briefly reviewed. Specific issues regarding management of these selected disorders, both for diagnostic consideration and for therapeutic intervention, are addressed. PMID:23622294

Frenette, Eric; Guilleminault, Christian

2013-01-01

202

The neuroanatomy of attention.  

PubMed

Attention is a complex neurobehavioral domain that is essential for all higher functions. Large areas of the brain are devoted to attention, reflecting its importance in the entire range of mental operations. Currently, two major distributed neural networks are recognized as mediating complementary aspects of attentional function. One is a diffuse system that distributes attention globally. This attentional system is subserved by a widespread network of thalamic and bihemispheric structures in which the frontal lobes are particularly important. The second network, a focal system that distributes attention to salient aspects of spatial experience, is lateralized to frontal and parietal regions of the right hemisphere. Both attentional networks are comprised of cortical and subcortical gray matter structures, as well as connecting white matter tracts that integrate these regions into functional ensembles. Neurological disorders frequently produce dramatic syndromes reflecting dysfunction of these networks. Among these syndromes are the acute confusional state, which results from disturbance of the diffuse system, and left neglect, which follows disruption of the right hemisphere system. The neuroanatomy of attention is crucial for understanding important neurobehavioral syndromes and their treatment. PMID:11951169

Filley, Christopher M

2002-05-01

203

Neuropsychiatric and Psychosocial Issues of Patients With Hepatitis C Infection: A Selective Literature Review  

PubMed Central

Context We briefly reviewed the evidence on the association of hepatitis C (HCV) infection with several aspects of mental and psychosocial health. Evidence Acquisition Medline was searched with appropriate keywords. The primary sources were the systematic reviews. If systematic reviews were not available for a subject, then the most relevant and methodologically sound original studies were selected. Results HCV infection is associated with poorer health-related quality of life, and physical, mental, and social health. A part of impaired health of these patients is related to cirrhosis, intravenous drug use, co morbid psychiatric disorders, stigmatization, poor social support, alcohol abuse, and interferon treatment. However, HCV itself is also associated with poorer health status particularly in the physical and cognitive domains, which might be related to brain alterations induced by the virus. Interferon treatment is an important cause of depression in HCV patients and sometimes is associated with irritability, manic episode, or acute confusional state. Social health of HCV patients is significantly impaired by stigmatization, poor social support, psychiatric comorbidties, and impaired coping. Psychosocial impairment of HCV patients significantly impairs their treatment adherence. A supportive and nonjudgmental multidisciplinary team is required for optimal management of these patients. Conclusions Patients with HCV infection had complex neuropsychiatric and psychosocial problems. These problems are challenges for management of HCV infection, affect the patient’s care significantly, and might alter the course of the disease. A multidisciplinary approach, a supportive environment, and a nonjudgmental healthcare team are required for optimal medical and psychosocial management of patients with HCV.

Modabbernia, Amirhossein; Poustchi, Hossein; Malekzadeh, Reza

2013-01-01

204

Sexual harassment of psychiatric trainees: experiences and attitudes  

PubMed Central

A survey was carried out of psychiatric trainees' work-related experiences of unwanted sexual contact. A structured postal questionnaire was administered to 100 psychiatric trainees from senior house officer to specialist registrar level in a large psychiatric rotation. There was an 85% response rate; 86% (73) of the sample had experienced unwanted sexual contact, with 47% (40) experiencing deliberate touching, leaning over or cornering, and 18% (15) receiving letters, telephone calls or material of a sexual nature. Three-quarters (64) of respondents had experienced unwanted sexual contact from patients and 64% (54) from staff. Experiences and attitudes did not generally differ by gender, grade or training experience. Four out of 48 female respondents described stalking by patients. Of the 39 respondents who had reported harassment by patients, 31 felt supported by colleagues, while of the 13 who had reported harassment by colleagues, eight felt supported. Two-thirds of the respondents considered sexual harassment `sometimes' or `frequently' a problem for the profession. Diagnoses of confusional states, mania or schizophrenia made subjects less likely to consider unwanted sexual behaviour to be `sexual harassment' (86%, 80%, and 67%, respectively), but not for other diagnoses. Levels of threatening and intrusive sexual harassment are unacceptably high in this study group. Health trusts should adopt policies of `zero tolerance' and all incidents should be reported. Psychological impact on victims should be acknowledged even when the behaviour of the perpetrator can be explained by diagnosis.?

Morgan, J.; Porter, S.

1999-01-01

205

AGRUPAMENTO DE MUNICÍPIOS DO PONTAL DO PARANAPANEMA, ESTADO DE SÃO PAULO, EM FUNÇÃO DE VARIÁVEIS RELACIONADAS À AGROPECUÁRIA rfiretti@apta.sp.gov.br Apresentação Oral-Desenvolvimento Rural, Territorial e regional RICARDO FIRETTI 1; VANDERLEI JOSÉ SEREIA 2; EDUARDO CARDOSO DE OLIVEIRA 3; ANTONIO ASSIZ DE CARVALHO FILHO 4. 1.APTA\\/SAA-SP, PRESIDENTE PRUDENTE - SP - BRASIL; 2.UEL, LONDRINA - PR - BRASIL; 3.AEDZO, PRESIDENTE PRUDENTE - SP - BRASIL; 4.FCT\\/UNESP, PRESIDENTE PRUDENTE - SP - BRASIL. AGRUPAMENTO DE MUNICÍPIOS DO PONTAL DO PARANAPANEMA , ESTADO DE SÃO PAULO, EM FUNÇÃO DE VARIÁVEIS RELACIONADAS À  

Microsoft Academic Search

Recognized in the State of São as one of the last f rontiers of development paulista, the Pontal do Par anapanema, has its main base in the agricultural economy, but needs to further diversify and increase technology. Order to support actions of public and private actors with r egard to rural development, this work had as main o bjective to

Ricardo Firetti; Vanderlei José Sereia; Eduardo Cardoso de Oliveira; Antônio Assiz de Carvalho

206

Domestic Determinants of Net U. S. Foreign Investment (Facteurs intérieurs déterminant l'investissement net étranger dans les comptes nationaux des Etats-Unis) (Factores determinantes internos de la inversión externa neta de Estados Unidos)  

Microsoft Academic Search

The current account balance known as net foreign investment in the national income and product accounts of the United States is largely determined by domestic factors that have changed the supply of national saving relative to the demand for domestic investment. Thus, the estimated rate of net foreign investment declined by almost half as much as the cyclically adjusted net

George M. Von Furstenberg

1980-01-01

207

Proyecto Curricular Sobre la Herencia Iberoamericana. Latinos en la Formacion de los Estados Unidos de American: Ayer, Hoy y Manana. Procedimientos de la Conferencia Sequnda Conferencia Anual del Panel Consultivo Internacional en Santillana del Mar, Espana (The Ibero-American Heritage Curriculum Project. Latinos in the Making of the United States of America: Yesterday, Today, and Tomorrow).  

ERIC Educational Resources Information Center

|The Ibero-American Heritage Curriculum Project is an interdisciplinary curriculum development project designed to integrate the study of Ibero-American heritage and culture into classroom instructional programs, kindergarten through grade 12. The project was initiated by the New York State Education Department and involves the Spanish National…

New York State Education Dept., Albany.

208

Frecuencia de Trichinella spiralis en sangre y músculo de equinos sacrifi cados en dos diferentes mataderos, uno de tipo industrial y otro de tipo rural en el Estado de México, México Frequency of Trichinella spiralis in blood and muscles of horses from two slaughter houses (industrial and rural) in the State of Mexico, Mexico  

Microsoft Academic Search

The objective of this study was the evaluation of the frequency of Trichinella spiralis in horse meat that is used for human and animal consumption. A total of 150 horses were sampled, from two private slaughterhouses, one industrial slaughterhouse with some level of technology and the other one rural with less technology. Seventy animals from the fi rst one and

Enedina Jiménez-Cardoso; María de Lourdes Caballero-García; Gabriel Uribe-Gutiérrez; Esmeralda Trejo-Hernández; Francisco Ramón Gay-Jiménez

209

Double-blind evaluation of transdermal nitroglycerine as adjuvant to oral morphine for cancer pain management 1 1 Sponsored by a financial grant from FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo). Marcelo V Perez received a monthly grant from FAPESP during the realization of this paper  

Microsoft Academic Search

Study Objectives: To examine analgesia and adverse effects following transdermal application of nitroglycerine (a nitric oxide generator) combined with oral morphine, in cancer pain patients.Design: Randomized, double-blind study.Setting: Teaching hospital.Patients: 36 patients suffering from cancer pain.Interventions: Patients were divided into two groups (n = 18). All patients were regularly taking oral amitriptyline 50 mg at bedtime. Pain was evaluated using

Gabriela R Lauretti; Marcelo V Perez; Marlene P Reis; Newton L Pereira

2002-01-01

210

VIGOR JUVENIL EM PROGÊNIES DE ERVA-MATE (Ilex paraguariensis A. St.-Hil.) NATIVAS DO ESTADO DE MATO GROSSO DO SUL JUVENILE VIGOUR IN ERVA-MATE (Ilex paraguariensis A. St.-Hil.) NATURAL PROGENIES FROM MATO GROSSO DO SUL STATE  

Microsoft Academic Search

The objective of this paper was to estimate the parameters and genetic values for the traits height, diameter and survival of erva-mate progenies, in an initial development phase, for the establishment of a progeny test in the indian area Kaiowá and Guarani. Seeds from 30 parent trees were collected in Caarapó, MS. The half-sib progenies were established at the COMFLORA

Suzi Maggi Kras; Reginaldo Brito da Costa; Marcos Deon; Vilela de Resende

2007-01-01

211

Análisis de la Satisfacción con los Cuidados en Salud a Través del Cuestionario EORTC IN-PATSAT32 en Pacientes con Cáncer de Mama, Linfoma no Hodgkin y Cáncer ColoRectal en Diferentes Etapas Clínicas. Relación con las Características Socio-Demográficas, Estados Co-Mórbidos y Variables del Proceso de Atención en el Instituto Mexicano del Seguro Social  

Microsoft Academic Search

IntroductionIn Mexico cancer is a public health burden. Nowadays the health care systems pay special attention to patient's perception and satisfaction of the health care received. Satisfaction with quality of health care has an impact in the adherence to the treatment.

Luz-Ma-Adriana Balderas-Peña; Daniel Sat-Muñoz; Iris Contreras-Hernández; Pedro Solano-Murillo; Guillermo-Allan Hernández-Chávez; Ignacio Mariscal-Ramírez; Martha Lomelí-García; Margarita-Arimatea Díaz-Cortés; Joaquín-Federico Mould-Quevedo; Juan-Manuel Castro-Cervantes; Oscar-Miguel Garcés-Ruiz; Gilberto Morgan-Villela

2011-01-01

212

FishTraits: A database of ecological and life-history traits of freshwater fishes of the United States [FishTraits: Base de datos de caracter??sticas ecol??gicas y de historia de vida de peces dulceacu??colas en los Estados Unidos de Norteam??rica  

USGS Publications Warehouse

The need for integrated and widely accessible sources of species traits data to facilitate studies of ecology, conservation, and management has motivated development of traits databases for various taxa. In spite of the increasing number of traitsbased analyses of freshwater fishes in the United States, no consolidated database of traits of this group exists publicly, and much useful information on these species is documented only in obscure sources. The largely inaccessible and unconsolidated traits information makes large-scale analysis involving many fishes and/or traits particularly challenging. We have compiled a database of > 100 traits for 809 (731 native and 78 nonnative) fish species found in freshwaters of the conterminous United States, including 37 native families and 145 native genera. The database, named FishTraits, contains information on four major categories of traits: (1) trophic ecology; (2) body size, reproductive ecology, and life history; (3) habitat preferences; and (4) salinity and temperature tolerances. Information on geographic distribution and conservation status was also compiled. The database enhances many opportunities for conducting research on fish species traits and constitutes the first step toward establishing a central repository for a continually expanding set of traits of North American fishes.

Frimpong, E. A.; Angermeier, P. L.

2009-01-01

213

The Cost of Trade Restraints: The Case of Japanese Automobile Exports to the United States (Le coût des obstacles au commerce: étude du cas des exportations d'automobiles japonaises aux Etats-Unis) (El costo de las limitaciones del comercio: El caso de la exportación de automóviles japoneses a los Estados Unidos)  

Microsoft Academic Search

This paper assesses the extent to which restraints on exports of Japanese automobiles to the United States affected car sales and prices in the period 1981-84. The estimates are obtained using a model of the U.S. automobile sector that explicitly allows for the effects of the quotas on the average quality of cars purchased. By distinguishing between pure price effects

Charles Collyns; Steven Dunaway

1987-01-01

214

Palabras del Secretario de Educacion Publica en la reunion anual de directores de education federal e inspectores generales en los estados que se rigen por el calendario "A". (Address by the Minister of Education at the Annual Meeting of Directors of Federal Education and Inspectors General in Calendar "A" States).  

ERIC Educational Resources Information Center

|This document is an English-language abstract (approximately 1,500 words) of a speech by the Mexican Minister of Education at an annual educators meeting. The Minister dealt with the administration and quality of education, the role of the directors and the duties towards them of the inspectors, and the main features of the reform of national…

Yanez, Agustin

215

Caracteristicas DA Drenagem Determinadas Em Fotografias Aerease Do Relevo Determinadas Em Cartas Planialtimetricas de Escalas Diferentes Para Tres Solos Do Estado de Sao Paulo (Characteristics of Drainage Determinations in Aerial Photographs and Relief Determination on Different Scales Planialtimetric Charts for Three Soils in the State of Sao Paulo).  

National Technical Information Service (NTIS)

Based on the interpretation of vertical aerial photographs on a 1:35,000 scale, the characterization was made of the drainage standards from three different soils of the State of Sao Paulo (red-yellow latosol, red-yellow podzol, and litosol) and the varia...

R. Angulofilho V. A. Demetrio G. V. Defranca

1986-01-01

216

Welfare recipients’ quality of life: lessons from the United Nations’ Human Development Index for the US welfare policy La calidad de vida de las beneficiarias del bienestar social: lecciones del Indice de Desarrollo Humano (IDH) de las Naciones Unidas para la política de bienestar social de los Estados Unidos de América  

Microsoft Academic Search

This article is part of a study on single mothers who were welfare recipients in Georgia, US (n?=?53,323) in the year 2000 which used the Human Development Index (HDI) to measure their quality of life (QOL) and that of the overall Georgia population by race. The United Nations created the HDI in 1990 to compare QOL across nations, but the

Mónica M. Alzate

2006-01-01

217

Nível de atividade física da população do Estado de São Paulo: análise de acordo com o gênero, idade, nível socioeconômico, distribuição geográfica e de conhecimento Physical activity level of São Paulo State population: an analysis based on gender, age, socio-economic status, demographics and knowledge  

Microsoft Academic Search

Physical inactivity has assumed the highest prevalence among cardiovascular risk factors. This phenomenon is even worse in the developing countries. Considering the relevance of this problem, we aimed to assess the São Paulo State physical activity level. 2001 people aged from 14 to 77 years old were interviewed (953 males and 1048 females) on July, 2002, referring to a sample

Sandra Mahecha Matsudo; Victor Rodrigues Matsudo; Timoteo Araújo; Douglas Andrade; Erinaldo Andrade; Luis Oliveira; Glaucia Braggion

218

La flor y el fruto de la salud, la virtud y la felicidad: Lo interno transformado en externo en la enseñanza de la música en las escuelas públicas de los Estados Unidos desde décadas tempranas hasta el presente * The Flower and Fruit of Health, Virtue, and Happiness: Inwardness Turned Outward in American Public School Music Instruction from the Early Decades to the Present  

Microsoft Academic Search

In this article, I analyze several of the key systems of reasoning that are embodied in several eras of music documents. Starting from these texts and reading across cultural practices that touched the curriculum, the analysis considers ideals and codes of behavior as systems of knowledge that fabricate who the learner is and what the substance of the lessons should

Ruth Gustafson

2007-01-01

219

RESUMEN DE TESIS DOCTORAL Reconstrucción de Parámetros y Variables de Estado para una Clase de Sistemas Caóticos con Aplicación en Codificación y Decodificación de Información Parameter and State Variable Reconstruction for a Class of Chaotic with Application to Information Codification and De-codification  

Microsoft Academic Search

In this paper we describe how to use exact state and parametric integral equations re-constructors for the identification of the state variables of dynamic chaotic discrete and continuous non-lineal systems. In both cases, we avoid the use of asymptotic observers and Takens Theorem. Identification and reconstruction of discrete systems is illustrated with Lozi's system. The state reconstruction schema for discrete

Miguel Santiago; Suárez Castañón; Carlos Fernando Aguilar Ibáñez

2005-01-01

220

Sleep and Sex: What Can Go Wrong? A Review of the Literature on Sleep Related Disorders and Abnormal Sexual Behaviors and Experiences  

PubMed Central

Study Objectives: To formulate the first classification of sleep related disorders and abnormal sexual behaviors and experiences. Design: A computerized literature search was conducted, and other sources, such as textbooks, were searched. Results: Many categories of sleep related disorders were represented in the classification: parasomnias (confusional arousals/sleepwalking, with or without obstructive sleep apnea; REM sleep behavior disorder); sleep related seizures; Kleine-Levin syndrome (KLS); severe chronic insomnia; restless legs syndrome; narcolepsy; sleep exacerbation of persistent sexual arousal syndrome; sleep related painful erections; sleep related dissociative disorders; nocturnal psychotic disorders; miscellaneous states. Kleine-Levin syndrome (78 cases) and parasomnias (31 cases) were most frequently reported. Parasomnias and sleep related seizures had overlapping and divergent clinical features. Thirty-one cases of parasomnias (25 males; mean age, 32 years) and 7 cases of sleep related seizures (4 males; mean age, 38 years) were identified. A full range of sleep related sexual behaviors with self and/or bed partners or others were reported, including masturbation, sexual vocalizations, fondling, sexual intercourse with climax, sexual assault/rape, ictal sexual hyperarousal, ictal orgasm, and ictal automatism. Adverse physical and/or psychosocial effects from the sleepsex were present in all parasomnia and sleep related seizure cases, but pleasurable effects were reported by 5 bed partners and by 3 patients with sleep related seizures. Forensic consequences were common, occurring in 35.5% (11/31) of parasomnia cases, with most (9/11) involving minors. All parasomnias cases reported amnesia for the sleepsex, in contrast to 28.6% (2/7) of sleep related seizure cases. Polysomnography (without penile tumescence monitoring), performed in 26 of 31 parasomnia cases, documented sexual moaning from slow wave sleep in 3 cases and sexual intercourse during stage 1 sleep/wakefulness in one case (with sex provoked by the bed partner). Confusional arousals (CAs) were diagnosed as the cause of “sleepsex” (“sexsomnia”) in 26 cases (with obstructive sleep apnea [OSA] comorbidity in 4 cases), and sleepwalking in 2 cases, totaling 90.3% (28/31) of cases being NREM sleep parasomnias. REM behavior disorder was the presumed cause in the other 3 cases. Bedtime clonazepam therapy was effective in 90% (9/10) of treated parasomnia cases; nasal continuous positive airway pressure therapy was effective in controlling comorbid OSA and CAs in both treated cases. All five treated patients with sleep related sexual seizures responded to anticonvulsant therapy. The hypersexuality in KLS, which was twice as common in males compared to females, had no reported effective therapy. Conclusions: A broad range of sleep related disorders associated with abnormal sexual behaviors and experiences exists, with major clinical and forensic consequences. Citation: Schenck CH; Arnulf I; Mahowald MW et al. Sleep and sex: what can go wrong? A review of the literature on sleep related disorders and abnormal sexual behaviors and experiences. SLEEP 2007;30(6):683-702.

Schenck, Carlos H.; Arnulf, Isabelle; Mahowald, Mark W.

2007-01-01

221

Vale a pena desarmar? Uma avaliação do impacto da campanha de entrega voluntária de armas sobre as mortes com armas de fogo  

Microsoft Academic Search

Resumo O objetivo deste trabalho foi avaliar o impacto da campanha de entrega de armas (política de buy-back) sobre a incidência de óbitos com armas de fogo no Estado do Paraná. Visto que neste estado esta campanha teve início seis meses antes da campanha nacional, foi possível utilizar o estimador de diferenças em diferenças, em que os municípios paranaenses constituíram

Milena Karla Soares; Luiz Guilherme Dácar Da Silva Scorzafave

2008-01-01

222

La presencia de China en América Latina. Un tema controvertido  

Microsoft Academic Search

El autor analiza la presencia de la República Popular China en América Latina y sus repercusiones para la seguridad nacional de los Estados Unidos en la última década. Al sostener que actualmente la RPC no amenaza los intereses vitales de Estados Unidos en su patio trasero, el autor toma en cuenta el diálogo estratégico sino-estadounidense, la seguridad nacional de la

Peter M. Lewis

2007-01-01

223

Economia Política de Petróleo e Gás: A Experiência Russa  

Microsoft Academic Search

A recuperação do poder central da Rússia no governo Putin com uma estratégia de desenvolvimento nacional foi o ponto de partida para uma revisão da política do Estado diante do setor de energia. O governo aumentou drasticamente a presença do Estado no setor de energia, e chegou a controlar, no final de 2007, 47% dos ativos, contra menos de 10%

Giorgio Romano Schutte

2010-01-01

224

España, entre Europa y América: un ensayo interpretativo  

Microsoft Academic Search

Este último artículo del dossier presenta algunas hipótesis de interpretación sobre la historia de la política exterior española durante el siglo xx.Los elementos centrales son la relación entre España y el resto de los Estados continentales; la imagen de las instituciones europeas; los sentimientos encontrados hacia Estados Unidos, su política y su sociedad; y las cambiantes percepciones, estrategias e intereses

Florentino Portero

2003-01-01

225

EVOLUÇÃO DAS EXPORTAÇÕES, COMÉRCIO INTRASETORIAL E IMPACTOS AMBIENTAIS DOS NEGÓCIOS INTERNACIONAIS DE MADEIREIRA BRASILEIRA  

Microsoft Academic Search

O Brasil é importante exportador de madeira do mundo, tendo como principais mercados de destino os Estados Unidos e a União Européia. Desse modo, nesse estudo pretende-se estimar as equações de oferta e demanda por exportação madeireira do Brasil para os Estados Unidos e a União Européia; identificar as fontes de comércio madeireiro do Brasil nos seus principais mercados de

Rachel Silva Almeida; Rosemeiry Melo Carvalho; Ruben Dario Mayorga Mera

2008-01-01

226

Tratamiento nutricional de los síndromes colestáticos en la infancia  

Microsoft Academic Search

ResumenLa hepatopatía colestática causa un riesgo serio de desnutrición, que incluye la desnutrición de proteína y energía y las carencias nutricionales específicas. El estado nutricional puede evaluarse basándose en mediciones antropométricas, que pueden ser equívocas a causa de la ascitis y el edema periférico. Las determinaciones bioquímicas del estado de las vitaminas liposolubles son importantes para evaluar las necesidades de

Piotr Socha

2008-01-01

227

Introduction to Cleft and Craniofacial Team Care  

MedlinePLUS

... los Estados Unidos, alfabéticamente por estado ) A – C – D – F – G – H – I – K – L – M – N – O – P – R – S – T – U – V – W International Team Listings alphabetically by Country ( Equipos internacionales, alfabéticamente por país ) A – B – C – D – F – G – I – J – K – M – N – P – S – T – U Before ...

228

Prevalence of Parasomnia in Autistic Children with Sleep Disorders  

PubMed Central

The prevalence of sleep related complaints is reported by questionnaire studies to be as high as 83.3% in children with autism spectrum disorders (ASD). Questionnaire studies report the presence of various parasomnia in ASD. However, no polysomnographic study reports non-REM parasomnias and only a single study reports REM related parasomnias in ASD. We investigated the prevalence and characteristics of sleep disorders by polysomnographic study and questionnaires in a cohort of 23 children with ASD and 23 age-matched children of a non-autistic comparison group. The results showed significantly more non-REM parasomnias in 14 children with ASD on polysomnograms (PSG) and 16 ASD children by questionnaire, a finding that was not associated with medication use, other comorbid medical or psychiatric disorders, or sleep disordered breathing. Of the 14 children with ASD who had PSG evidence of parasomnia, 11 of them had a history suggestive of parasomnia by questionnaire. There was a high sensitivity but a low specificity of parasomnia in ASD by questionnaire in predicting the presence of parasomnia in the PSG. Of the parasomnias recorded in the laboratory, 13 ASD children had Disorders of Partial Arousal, consistent with sleep terrors or confusional arousals. Furthermore, multiple episodes of partial arousal occurred in 11 of the 13 ASD children who had PSG evidence of Disorders of Partial Arousal. Of the 11 ASD children with multiple episodes of partial arousal, 6 ASD children had multiple partial arousals during both nights’ PSG study. Sleep architecture was abnormal in children with ASD, characterized by increased spontaneous arousals, prolonged REM latency and reduced REM percentage. These results suggest a high prevalence of parasomnia in this cohort of children with ASD and a careful history intake of symptoms compatible with parasomnia could be prudent to diagnose parasomnia in ASD children when performing a PSG is not possible.

Ming, Xue; Sun, Ye-Ming; Nachajon, Roberto V.; Brimacombe, Michael; Walters, Arthur S.

2009-01-01

229

Behavioral, social and mental health aspects of home care for older Americans.  

PubMed

Ninety-five percent (95 percent) of the elderly live in the community. At least five million of them need help with activities of daily living. Eighty percent have one or more chronic illness. Eighteen to 25 percent of the elderly have significant mental symptomatology. Only four percent of the elderly visit the community mental health centers (Ernst 1977; Talbott 1985). The primary providers of mental health services to the elderly are the general practitioners, the primary health care nurse, the home health aide psychiatric social workers, members of the family, and a few clinical geropsychologists (German 1987). Over half of the home health care clients are elderly. The primary home health care providers are "challenged" in providing comprehensive health services to the elderly in their homes--often because of a lack of training of the primary home health care provider or because of lack of access because of agencies' policies regarding the acceptance of patients with behavioral, social and mental disorders, including Alzheimer's disease. In this paper, I have profiled the behavioral, social and mental health needs of the elderly with physical illnesses as well as those with behavioral, social and mental disorders. I have dealt with those specific conditions which home health care providers and families find specifically challenging and worrisome, namely: Delirium (confusional states) Suicidal ideation and attempts Psychological assessment Dementia of Alzheimer's type Depression Delirium: (confusion and other behavioral problems associated with hip fractures) Psychotropic drug interaction Wandering Every effort must be made to respect the privacy of the elderly, protect the elderly from research risk, get informed consent when indicated, provide counseling and always assure a high quality of care and supervision. There must be a current plan of care in which both the patient and family participate when feasible. Every effort and plan of care must focus on the maintenance of independence and self-care capabilities and prevention of excessive disabilities. PMID:10303290

Harper, M S

1988-01-01

230

Analysis of video-polysomnographic sleep findings in dementia with Lewy bodies.  

PubMed

Knowledge of sleep architecture and disorders of nocturnal sleep in dementia with Lewy bodies (DLB) is limited by a lack of systematic video-polysomnographic (video-PSG) investigations. We describe video-PSG findings in 29 consecutive subjects diagnosed with DLB. All the patients underwent a clinical interview and overnight video-PSG monitoring. Twenty-nine nondemented patients with Parkinson's disease (PD) matched for age and sex with the DLB cases were selected for comparison. The DLB subjects showed less 1NREM sleep (P?=?.000) and more 2NREM sleep (P?=?.000) than the PD subjects. Sleep apnea (30.7% vs. 34.8%) and periodic limb movements (60.9% versus 50.0%) were frequent in both groups. Disruptive motor behavioral manifestations were more frequent in subjects with DLB (69.6% vs. 26.9%, P?=?.008) and consisted of not only REM sleep behavior disorder (RBD) but also confusional events (30.3% vs. 3.8%, P?=?.020) and arousal-related episodes mimicking RBD. Subjects with DLB in whom a sleep disturbance had been the presenting symptom performed better than those with other onset symptoms on both the Mini-Mental State Examination (22.2?±?4.1 vs. 18.1?±?4.6, P?=?.019) and the Frontal Assessment Battery (15.8 vs. 10.3, P?=?.010). Polysomnographic findings in DLB show a complex mix of overlapping sleep alterations: impaired sleep structure, sleep comorbidities, and various motor-behavioral events (not restricted to RBD). Clinicians should be aware of the possibility of misleading symptoms and of the risk of overlooking sleep comorbidities, and consider performing polysomnographic sleep investigations in selected cases. We found evidence that a sleep disturbance as the presenting symptom might indicate a different phenotype of the disease, characterized by milder cognitive impairment. © 2013 International Parkinson and Movement Disorder Society. PMID:23744574

Terzaghi, Michele; Arnaldi, Dario; Rizzetti, Maria Cristina; Minafra, Brigida; Cremascoli, Riccardo; Rustioni, Valter; Zangaglia, Roberta; Pasotti, Chiara; Sinforiani, Elena; Pacchetti, Claudio; Manni, Raffaele

2013-06-06

231

Childhood parasomnia - A disorder of sleep maturation?  

PubMed

BACKGROUND: Childhood parasomnias are believed to be a benign disorder due to immaturity of some neural circuits, synapses and receptors. The aim of our study was to explore a possible connection with other neurological developmental disorders. METHODS: 72 children (mean age 9.9 ± 5.0 years, 47 boys) were clinically examined and 88 nocturnal v-PSG and 22 v-EEG recordings were evaluated. The most frequent diagnostic findings were: sleepwalking in 24 children, confusional arousal in 21, sleep terror in 8, groaning and enuresis each in 7, non-specific arousal disorder in 4 patients, and REM-related parasomnia in only one child. For statistical evaluation chi-square test, the two-sample t-test and Mann-Whitney rank test were used. RESULTS: Perinatal risk history was found in 38% of the cohort. Developmental disorders were diagnosed in 30 children (41.7%), more frequently in combinations with: attention-hyperactivity disorder (30.6%), dyslexia and dysgraphia (13.9%), developmental dysphasia (9.7%), mild motor and/or intellectual dysfunction (6.9%). Abnormal movements in sleep, some of them also regarded as developmental, were diagnosed in 37 children (51.4%). Sleep-related breathing disorders were found in 29 patients (40.3%) -snoring (29.2%) and/or sleep apnea (11.1%). Only 16.7% had no comorbidity. Most of the children (60%) showed 2 or 3, exceptionally up to 5 comorbidities. Children, in whom no parasomnia was found in close relatives, had a mild but non-significant earlier onset of the disease (4.4 ± 4.0 against 6.3 ± 4.3 years). CONCLUSION: Childhood parasomnias are frequently associated with perinatal risk factors and developmental comorbidities, and can be regarded as a disorder of sleep maturation. PMID:23778306

Nevsimalova, Sona; Prihodova, Iva; Kemlink, David; Skibova, Jelena

2013-06-15

232

A psychoanalytic study of migration: its normal and pathological aspects.  

PubMed

Without maintaining that it always follows the same steps, we could say that the migratory process passes through several phases. The feelings that prevail are those of intense sorrow for all that has been abandoned or lost, fear of the unknown, and the very profound experiences of loneliness, privation, and helplessness. Paranoid, confusional, and depressive anxieties occupy the scene in turn. This stage may be followed or replaced by a manic state in which the immigrant minimizes the transcendental significance of the change in his life or, on the contrary, magnifies the advantages of the change and overvalues everything in the new situation, disdaining what has been lost. After a variable period of time, nostalgia appears, and sorrow for the lost world. The immigrant begins to recognize feelings previously dissociated or denied and becomes capable of "suffering" his pain ("growing pains") while, at the same time, he becomes more accessible to the slow and progressive incorporation of elements of the new culture. The interaction between his internal and external world becomes more fluid. Recovery of the pleasure of thinking and desiring and of the capacity for making plans for the future, in which the past is regarded as such and not as a "lost paradise" where one constantly longs to return. In this period, it could be considered that mourning for the country of origin has been worked through to the maximum extent possible, facilitating integration of the previous culture into the new culture, without the need to renounce the old. All of this promotes an enrichment of the ego and the consolidation of a more evolved sense of identity. PMID:6707429

Grinberg, L; Grinberg, R

1984-01-01

233

Fiscal Deficits and Interest Rates in the United States: An Empirical Analysis, 1960-84 (Déficits budgétaires et taux d'intérêt aux Etats-Unis: analyse empirique, 1960-84) (El déficit fiscal y las tasas de interés en Estados Unidos: Un análisis empírico, 1960-84)  

Microsoft Academic Search

The paper deals with the ongoing controversy about whether fiscal deficits bring about higher interest rates and whether the historically high peacetime fiscal deficits experienced by the United States in recent years have been the main factor explaining the extraordinarily high level of U.S. real interest rates. On the basis of a simple model of interest rate determination that includes

Vito Tanzi

1985-01-01

234

Freqüência das infecções pelo HIV1, rubéola, sífilis, toxoplasmose, citomegalovírus, herpes simples, hepatite B, hepatite C, doença de Chagas e HTLV I\\/II em gestantes, do Estado de Mato Grosso do Sul Frequency of HIV1, rubella, syphilis, toxoplasmosis, cytomegalovirus, simple herpes virus, hepatitis B, hepatitis C, Chagas' disease and HTLV I\\/II infection in pregnant women of State of Mato Grosso do Sul  

Microsoft Academic Search

It was aimed to estimate the frequency of syphilis, rubella, hepatitis B, hepatitis C, toxoplasmosis, Chagas' disease, HTLV I\\/II, simple herpes virus, HIV-1 and cytomegalovirus in pregnant women and to evaluate the relationship between age and the frequency of the infections studied. A transversal study of 32,512 pregnant women submitted to pre-natal sreening in the period of November 2002 to

Ernesto Antonio Figueiró-Filho; Flávio Renato de Almeida; Alessandro Henrique Antunes Lopes; Orlando Oliveira de Morais; Virgílio Gonçalves; Souza Júnior; Tamara Lemos Maia; Geraldo Duarte

235

Desenvolvimento local e agricultura familiar: o caso da produção de açúcar mascavo em Capanema - Paraná Local development and family agriculture: the brown sugar production case in Capanema city- Paraná state in Brazil Développement local et agriculture familiale: le cas de la production de sucre brun dans la ville de Capanema dans l'état du Paraná au Brésil Desarrollo local y la agricultura familiar: el caso de la producción de azúcar marrón en la ciudad de Capanema - estado de Paraná en Brasil  

Microsoft Academic Search

Resumo: Esse estudo analisa, por meio de um estudo exploratório, o aporte dos produtos derivados da cana-de- açúcar no contexto do desenvolvimento local no município de Capanema - Paraná. Essa atividade se apresenta como opção para a produção da agricultura familiar ao criar alternativa de renda nas unidades agroindustriais, além de possibilitar a diversificação da produção. Os resultados mostram que

Mariza Zeni de Castro; Jandir Ferrera de Lima; Pery Francisco Assis Shikida

2009-01-01

237

66 FR 12658 - Office of Protocol; Gifts to Federal Employees From Foreign Government Sources Reported to...  

Federal Register 2010, 2011, 2012, 2013

...United Mexican States. Government. Unidos de America William Jefferson Clinton, Como Recuerdo de las Visita a los Estados Unidos de America Vincente Fox Quesada, Presidente Electo de Mexico, 24, VIII, 2000;'' Recd-August 24, 2000;...

2001-02-27

238

60 FR 52512 - Commerce Trade Fair Privatization: Private Sector Organization and Management of U.S. Exhibitor...  

Federal Register 2010, 2011, 2012, 2013

...and packaging Brazil machinery Eduardo Altenfelder Commercial Specialist U.S. and Foreign Commercial Service Rua Estados Unidos, 1812 Sao Paulo, S.P. 01427-002 Brazil Tel: 55-11-853-2011/2411/2778 Fax:...

1995-10-06

239

60 FR 17622 - Commerce Trade Fair Privatization: Private Sector Organization and Management of Overseas Trade...  

Federal Register 2010, 2011, 2012, 2013

...B Machado Feiras e Promocoes Ltda., Commercial Officer, US&FCS Rua Rua Brasilio Machado 60, 01230- Estados Unidos, 1812, Sao Paulo, 905, Sao Paulo, Brazil, Tel: 55- S.P., Brazil, Tel: 55-11-853-...

1995-04-06

240

61 FR 63828 - Joint Projects With the U.S. Commercial Centers in Sao Paulo, Brazil, Jakarta, Indonesia, and...  

Federal Register 2010, 2011, 2012, 2013

...in-country. FOR FURTHER INFORMATION CONTACT: John Steuber, Director, U.S. Commercial Center--Sao Paulo, Rua Estados Unidos, 1812, Sao Paulo, SP. 01427-002, Brazil or AMCONGEN--Sao Paulo, Unit 3502, APO AA 34030, TEL:...

1996-12-02

241

63 FR 14424 - Joint Projects with the U.S. Commercial Centers in Sao Paulo, Brazil; Jakarta, Indonesia; and...  

Federal Register 2010, 2011, 2012, 2013

...in-country. FOR FURTHER INFORMATION CONTACT: Alan Long, Director, U.S. Commercial Center--Sao Paulo, Rua Estados Unidos, 1812, Sao Paulo, SP. 01427-002, Brazil; or AMCONGEN--Sao Paulo, Unit 3502, APO AA 34030. Tel:...

1998-03-25

242

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Mara Estacion E Annex.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

243

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Mara Estacion E.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

244

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. External Financing Evaluation Report.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

245

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Canal Bachaquero.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

246

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Mene Grande.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

247

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Las Gemelas.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

248

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characteriztion and Cost Estimate Report, La Concepcion.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

249

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Characterization and Cost Estimate Report, Mara DM-120.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

250

PDVSA Waste Oil Lagoon Cleanup Feasibility Study. Prioritization Report.  

National Technical Information Service (NTIS)

The report was prepared for PDVSA Exploration and Production, Protection Integral in Lagunillas, Estado Zulia, Venezuela to evaluate the conditions in 14 different study areas due to contamination resulting from the exploration, production and refining of...

1998-01-01

251

NORMAS DE BUENAS PRÁCTICAS CLÍNICAS (BPC)  

Center for Biologics Evaluation and Research (CBER)

Text Version... Unión Europea, Japón y los Estados Unidos, así como las de Australia, Canadá, los países Nórdicos y la Organización Mundial de la Salud (OMS). ... More results from www.fda.gov/downloads/drugs/guidancecomplianceregulatoryinformation

252

Los Ref ige ios!  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... Las Guías Alimentarias para las Personas que Viven en los Estados Unidos recomiendan que escoja leche baja en grasa o sin grasa, yogur o ... More results from www.fda.gov/downloads/food/ingredientspackaginglabeling

253

Demographic implications of the New United States certificates  

Microsoft Academic Search

\\u000a Resumen  Rara atender al desarrollo de una información uniforme de sucesos vitales en los cincuenta estados, junto con Puerto Rico\\u000a y las islas Vírgenes, el gobierno de los Estados Unidos prepara cettificados estandar de nacimienios, muertes fetales, muertes,\\u000a matrimonios y divorcios. Estos modelos son revisados aproximadamente cada diez años con asistencia de todos los esiados, Actualmente\\u000a se está preparando una revisión

Anders S. Lunde; Robert D. Grove

1966-01-01

254

Boletín del Instituto Nacional del Cáncer - 31 de enero de 2012  

Cancer.gov

Dr. Nils Daulaire Salud mundial a través de la colaboración y el liderazgo Para conmemorar el Día Mundial del Cáncer que tuvo lugar el 4 febrero, el doctor Nils Daulaire, director de la Oficina de Asuntos Internacionales del Departamento de Salud y Servicios Humanos de los Estados Unidos habla sobre las razones por las cuales los Estados Unidos deben participar en iniciativas para mejorar la salud mundial.

255

[Dissemination of blaIMP-8 among Enterobacteriaceae isolates from a Buenos Aires Hospital].  

PubMed

From August 2008 to December 2011, six metallo-?-lactamase-producing isolates, four Enterobacter cloacae, one Klebsiella oxytoca and one Citrobacter freundii, were detected at Hospital Interzonal General de Agudos "Evita" in Lanús. All six isolates showed multiresistant profiles and the presence of the blaIMP-8 gene. Five isolates also expressed PER-2 extended spectrum ?-lactamase. The blaIMP-8 gene was found as the first cassette in a class 1 integron. However, the 3´ conserved sequence could not be detected in three isolates. In all cases, blaIMP-8 was transferred by conjugation to azide-resistant Escherichia coli J53. PFGE analysis revealed that the four E. cloacae isolates were not genetically related. These are the first metallo-?-lactamases detected in this institution and our results suggest a possible intra- and inter-species horizontal dissemination of blaIMP-8. PMID:23876273

Togneri, Ana M; Gómez, Sonia A; Podestá, Laura B; Pérez, Marcela P; Faccone, Diego F; Ríos, Lidia E; Gañetea, Marcelo A; Anchordoqui, María S; Pasterán, Fernando G; Corso, Alejandra C

256

Evidence for interfacial dissolution-precipitation during low-temperature mineral weathering  

NASA Astrophysics Data System (ADS)

The dissolution of most common multicomponent minerals and glasses is typically "incongruent" as shown by the nonstoichiometric release of the solid phase components. This frequently results in the formation of so-called surface leached layers. The mechanism of this process has been a recurrent subject of research and debate over the past two decades, due to its relevance to a wide range of natural and technological processes, as well as being crucial in defining rate laws for mineral reactions. Here we report experimental, in situ nanoscale observations that confirm the formation of a cation depleted layer at the mineral-solution interface during dissolution of multicomponent minerals at acidic pH. Our in situ Atomic Force Microscopy studies of the dissolution of wollastonite, CaSiO3, and dolomite, Ca0.5Mg0.5CO3, combined with compositional analysis of reaction products, provide, for the first time, clear direct experimental evidence that cation-depleted (i.e. leached) layers are formed in a tight interface-coupled two step process: stoichiometric dissolution of the pristine mineral surfaces and subsequent precipitation of a secondary phase from a supersaturated boundary layer of fluid in contact with the mineral surface. Such a mechanism presents a new paradigm that differs from the concept of preferential leaching of cations, as postulated by most currently accepted incongruent dissolution models. References Ruiz Agudo, E; Putnis, CV; Rodríguez Navarro, C and Putnis, A. (2012) Mechanism of leached layer formation during chemical weathering of silicate minerals. Geology, 40, 947-950 Urosevic, M; Rodríguez Navarro,C; Putnis, CV; Cardell, C; Putnis, A and Ruiz Agudo, E (2012) In situ nanoscale observations of the dissolution of [10-14] dolomite cleavage surfaces. Geochimica et Cosmochimica Acta, 80, 1-13

Ruiz-Agudo, Encarnacion; Putnis, Christine V.; Rodriguez-Navarro, Carlos; Putnis, Andrew

2013-04-01

257

Quinolones: review of psychiatric and neurological adverse reactions.  

PubMed

Quinolones are a class of antibacterial agents for the treatment of several infectious diseases (e.g. urinary and respiratory tract infections). They are used worldwide due to their broad spectrum of activity, high bioavailability and good safety profile. The safety profile varies from quinolone to quinolone. The aim of this article was to review the neurological and psychiatric adverse drug reaction (ADR) profile of quinolones, using a literature search strategy designed to identify case reports and case series. A literature search using PubMed/MEDLINE (from inception to 31 October 2010) was performed to identify case reports and case series related to quinolone-associated neurological and psychiatric ADRs. The search was conducted in two phases: the first phase was the literature search and in the second phase relevant articles were identified through review of the references of the selected articles. Relevant articles were defined as articles referring to adverse events/reactions associated with the use of any quinolone. Abstracts referring to animal studies, clinical trials and observational studies were excluded. Identified case reports were analysed by age group, sex, active substances, dosage, concomitant medication, ambulatory or hospital-based event and seriousness, after Medical Dictionary for Regulatory Activities (MedDRA®) coding. From a total of 828 articles, 83 were identified as referring to nervous system and/or psychiatric disorders induced by quinolones. 145 individual case reports were extracted from the 83 articles. 40.7% of the individual case reports belonged to psychiatric disorders only, whereas 46.9% related to neurological disorders only. Eight (5.5%) individual case reports presented both neurological and psychiatric ADRs. Ciprofloxacin, ofloxacin and pefloxacin were the quinolones with more neurological and psychiatric ADRs reported in the literature. Ciprofloxacin has been extensively used worldwide, which may explain the higher number of reports, while for ofloxacin and pefloxacin, the number of reports may be over-representative. A total of 232 ADRs were identified from the selected articles, with 206 of these related to psychiatric and/or neurological ADRs. The other 26 were related to other body systems but were reported together with the reactions of interest. Mania, insomnia, acute psychosis and delirium were the most frequently reported psychiatric adverse events; grand mal convulsion, confusional state, convulsions and myoclonus were the most frequently reported neurological adverse events. Several aspects should be taken into account in the development of CNS adverse effects, such as the pharmacokinetics of quinolones, chemical structure and quinolone uptake in the brain. These events may affect not only susceptible patients but also 'healthy' patients. PMID:21585220

Tomé, Ana M; Filipe, Augusto

2011-06-01

258

Informe a la nación indica que continúa la disminución de las tasas de mortalidad por cáncer que empezó a principios de los noventa; Una sección especial destaca los cánceres asociados al exceso de peso y a la falta de actividad física adecuada  

Cancer.gov

Los índices de mortalidad por todos los cánceres combinados para hombres, mujeres y niños siguieron bajando en Estados Unidos entre 2004 y 2008, según el Informe Anual a la Nación sobre el Estado del Cáncer de 1975 a 2008. El índice general de diagnósticos nuevos de cáncer, que se conoce también como incidencia, bajaron entre los hombres un promedio de 0,6% por año entre 2004 y 2008. Los índices generales de incidencia de cáncer entre las mujeres bajaron 0,5% por año de 1998 hasta 2006; estos índices se nivelaron de 2006 a 2008.

259

[Benzodiazepines and forensic aspects].  

PubMed

Adverse effects of benzodiazepines are well known since the first one was used in 1958 (chlordiazepoxide). The literature collects study-cases or rarely controlled studies concerning side effects or paradoxical reactions to benzodiazepines. They mostly described drowsiness and behavioral disinhibition, including increased well-being feeling but also hostility, rage access with feeling of invulnerability, serious crimes and sometimes homicides. Delusional, manic, confusional or depressive states are also pointed out. Rate for aggressive behaviour is 0.3 to 0.7% but distinction should be done between accidental or "idiosyncratic" reaction and voluntary sought disinhibition, clearly more frequent. No benzodiazepine has any specificity for these adverse effects but pharmacology, doses, associated drugs (or alcohol) and psychopathology interact to produce hazardous psychic states. Pharmacology: GABA induces a decrease in serotonin compound and vigilance. Pharmacokinetic: first dose effect or over-dose effect, short half-life, lipophily, affinity, digestive absorption, active metabolites interact. Psychopathology: age, alcohol association, psychological status (high initial level of hostility, impulsivity, frustration, personality disorder and depressive status). External conditions: chronic illness, affective and professional frustrations, physical or psychic exhaustion contribute also. Some benzodiazepines (flunitrazepam, diazepam, clorazepate, triazolam, alprazolam, lorazepam, for example) are more often concerned for pharmacokinetics characteristics but also prescription habits. Forensic aspects should be considered in case of homicide. Especially, reality of benzodiazepines consumption and awareness of the potential paradoxical reaction should be precisely evaluated. Special focus on voluntary induced disinhibition has to be done for forensic considerations. Relationship but also crime facilitations are sometimes consciously sought. Some benzodiazepines have already been identified for this use: flunitrazepam, clorazepate but also triazolam and temazepam in UK, alprazolam in USA. Flunitrazepam is prohibited in USA and considered as narcotics in France. A Swedish study showed that violent acts were more frequent and serious in juvenile offenders taking flunitrazepam/alcohol than other young offenders staying in the same correctional institution. They recommended classification of flunitrazepam as narcotic. A study from Belgium with drug addicts concluded in the same way and asked for an increased information of professionals and a more efficient control of the delivery. Before concluding to idiosyncratic effect, and then possibly to penal irresponsibility, the forensic approach should consider: firstly the reality of the benzodiazepines absorption and implication in committing violence (urine test, chronology, amnesia); secondly, the association of unusual behaviour and converging circumstances (pharmacological, pharmacokinetic, psychopathology, external conditions); thirdly the consumer's knowledge of the disinhibition effect. In our prison practice, we have to be particularly cautious as population frequently associates personality disorder, drug addiction and high level of frustration related to penitential context. Special information should be given to inmates when benzodiazepines are prescribed, but more extensively, a preventive strategy should be adopted in general population. PMID:15029082

Michel, L; Lang, J-P

260

Pedro García Faria, ingeniero de Caminos (y arquitecto)  

Microsoft Academic Search

Pedro García Faria fue uno de los Ingenieros de Caminos, Canales y Puertos más destacados al servicio de la administración del Estado en España desde finales del siglo XIX hasta principios del XX. El interés que desde los inicios de su carrera profesional mostró por el problema del saneamiento de zonas afectadas por epidemias, le condujeron al reconocimiento profesional de

Miguel Ángel Miranda González

2007-01-01

261

CRISIS FINANCIERA INTERNACIONAL Lo que hemos aprendido y lo que nos queda por aprender  

Microsoft Academic Search

Desde aquel ya lejano, y para mí infausto, día de verano del año 2007 - cuya mañana me cogió en Palm Beach, Florida, en una piscina de hotel leyendo el New York Times mientras tomaba el sol - hasta hoy, he venido siguiendo, con insospechado interés, lo que pasó y lo que está pasando en la economía de los Estados

José Jurado Gil

2009-01-01

262

Desarrollo rural con base en la innovación de las reformas organizativas de trabajo  

Microsoft Academic Search

Al observar desde el medio académico, la crisis tanto social como económica que atraviesa Colombia, sobre todo en su área rural, siendo los más afectados los campesinos, segmento de población inveteradamente menos favorecido por el Estado, es necesario presentar hoy propues- tas de solución a sus problemas y por allí mismo a los del país y sus regiones. Lo que

Juan Guillermo Correa Jaramillo; Fabio Antonio Calle Correa; Diego Alonso Moreno; Sergio Andrés Martínez Jiménez

2004-01-01

263

Los dilemas del desarrollo territorial: repercusiones del zapatismo en la Selva Lacandona de Chiapas1  

Microsoft Academic Search

Este artículo discute los dilemas del desarrollo territorial en la Selva Lacandona. En particular analiza las relaciones entre movimientos sociales, nuevas formas de gobernanza ambiental y desarrollo en esta región del estado de Chiapas, en México. Con base en el llamado enfoque territorial del desarrollo rural (Schejtman y Berdegué, 2004), planteamos que en el contexto actual de globalización, para lograr

Luis Reygadas

264

Prevención de la carencia de hierro en la lactancia, la infancia y la adolescencia  

Microsoft Academic Search

ResumenLa carencia de hierro (CH) es frecuente en lactantes, niños y adolescentes de todo el mundo debido a sus elevadas necesidades de hierro durante el crecimiento, la precaria ingestión de hierro alimentario y la dieta con biodisponibilidad baja. El estado de hierro deficitario se asocia a consecuencias adversas para la salud durante toda la infancia. Las medidas preventivas deben iniciarse

Maria Andersson; Richard F. Hurrell

2010-01-01

265

Más y mejores trenes: Cambiando la matriz de transporte en América Latina y el Caribe  

Microsoft Academic Search

Esta nota técnica aborda el tema de los ferrocarriles de América Latina y el Caribe en sus tres modelos de negocio (Transporte de cargas, de pasajeros urbanos y suburbanos -trenes de cercanías-, y de pasajeros de larga distancia) y su potencial papel en un cambio de matriz de transporte. Se analiza el estado actual del sector y se revisan sus

Jorge Kohon

2011-01-01

266

Manejo de los recursos costeros y marinos en América Latina y el Caribe  

Microsoft Academic Search

El presente documento (ENV-128) expone una estrategia de manejo de los recursos costeros y marinos para el Banco Interamericano de Desarrollo. El manejo costero integrado se presenta como una actividad amplia y polivalente encaminada por un lado a mejorar la calidad de vida de las comunidades que dependen de los recursos costeros y, por otro, a ayudar a los estados

Michele H. Lemay

1998-01-01

267

CARACTERÍSTICAS DE LA POLÍTICA CRIMINAL ADOPTADA POR CUBA EN RELACIÓN AL TRÁFICO Y USO DE LA DROGA, PSICOFÁRMACOS Y OTRAS SUSTANCIAS DE EFECTOS SIMILARES  

Microsoft Academic Search

La droga, psicofármacos y otras sustancias de similares efectos, han ido evolucionando a lo largo de la historia con sus características específicas, de acuerdo a las condiciones de la sociedad, pero en Cuba, este flagelo ha sido atendido y controlado especialmente por las diferentes instituciones de nuestro Estado, debido a las graves consecuencias que acarrea para la población, específicamente para

Yaniuska Pose Roselló

2011-01-01

268

LA IMPORTANCIA DE LA EDUCACIÓN EN HÁBITOS DE VIDA SALUDABLES  

Microsoft Academic Search

Hablar de Salud es no sólo hablar de ausencia de enfermedad física o mental sino también de la presencia de un adecuado entorno personal y afectivo. Un todo que nos lleva a la Felicidad. Salud es bienestar general, buen estado físico y psíquico, alegría, ganas de vivir, de relacionarse con otras personas, de disfrutar, de libertad, de paz. Por tanto,

Eva Maria Rodriguez Cobos

2009-01-01

269

El dolor como terapia. La médula común de los campos de concentración nazis y franquistas  

Microsoft Academic Search

Los campos de concentración franquistas y los nazis evidencian un cuerpo común. En ambos se desarrollaba una terapia para los internos que tenía al cuerpo como vehículo de aprendizaje. El tratamiento político prescribía penalidades físicas — la suciedad, el hambre, la sed— y morales que debían conducir a los prisioneros a comprender la finalidad buscada por el Estado totalitario alemán

Mirta Núñez Díaz-Balart

2005-01-01

270

LAS ESTRUCTURAS SOCIALES DE LA ECONOMÍA: EN PIERRE BOURDIEU  

Microsoft Academic Search

Los últimos acontecimientos dentro y fuera de los Estados Unidos en materia económica llevan a re-pensar el rol que juegan tanto la propiedad inmobiliaria como la propiedad en general dentro de nuestras conceptualizaciones y sistema económico. En ese contexto, se inscribe el trabajo del sociólogo francés Pierre Bourdieu titulado Las Estructuras Sociales de la Economía. Originalmente, el autor comienza uno

Maximiliano E. Korstanje

2009-01-01

271

¿QUÉ ES EL TURISMO?  

Microsoft Academic Search

El turismo se presenta hoy día como una actividad que produce un intenso intercambio de personas y mercancías (Ascanio, 2007). Aquellos estados que requieren fomentar el turismo intentan celebrar convenios de reciprocidad o facilidades para el intercambio mencionado. Esos convenios pueden estar orientados sólo hacia las mercancías, hacia las personas o ambas. En este sentido, el visado o el permiso

Maximiliano Korstanje

2011-01-01

272

LOS MANTEROS DE LA CALLE FLORIDA: TEORÍA DE LA CAPITALIZACIÓN DEL VÍNCULO  

Microsoft Academic Search

El presente trabajo de revisión cuestiona de raíz la tesis de los no lugares y toma como objeto de estudio el conflicto acaecido en los últimos meses entre los manteros de la calle Florida y el Estado circunscripto a la ciudad de Buenos Aires. Para los primeros, existía un derecho a instalarse en un espacio público por motivos laborales mientras

Maximiliano Korstanje

2012-01-01

273

Aplicación de un Enfoque Intencional al Análisis de Variabilidad  

Microsoft Academic Search

El interés por el estudio de la variabilidad, es decir la habilidad de cambio o adaptación de un sistema, ha aumentado significativamente durante los últimos años. Esto se debe a su utilidad en diversos campos, desde la personalización del software a las líneas de producto o la adaptación automática de sistemas. Dicho estudio ha estado centrado principalmente en cuestiones de

Bruno González-Baixauli; Miguel A. Laguna; Sampaio do Prado

2005-01-01

274

EVALUATION OF THE STATUS OF RANGELAND HEALTH: TOWARDS THE FUTURE  

Technology Transfer Automated Retrieval System (TEKTRAN)

En los últimos años se ha mejorado mucho la evaluación del estado de salud de los pastizales con la integración de conceptos ecológicos. La guía “Interpreting Indicators of Rangeland Health”, versión 3, fue desarrollada con el objetivo de proveer una evaluación rápida de la salud de los pastizales. ...

275

Sintomas Depressivos e Qualidade de Vida em Indivíduos com Epilepsia por Esclerose Mesial Temporal  

Microsoft Academic Search

RESUMO Introdução: Dificuldades no trabalho, em relacionamentos interpessoais, familiares e sociais, a percepção do estigma, da discriminação dentre outros têm sido associados aos estados depressivos interictais, influen- ciando negativamente a qualidade de vida (QV) das pessoas com epilepsia. A depressão tem alta prevalência (20 a 55%) nas epilepsias, sendo vista como o fator mais importante no julgamento do paciente sobre

Neide Barreira Alonso; Tatiana Indelicato da Silva; Ana Carolina Westphal; Auro Mauro Azevedo

276

El Instituto Nacional del Cáncer publica nuevo atlas de mortalidad por cáncer  

Cancer.gov

El Instituto Nacional del Cáncer (NCI, por sus siglas en inglés) ha publicado un nuevo atlas, el Atlas de Mortalidad por Cáncer en los Estados Unidos, 1950-94, que muestra los patrones geográficos de las tasas de mortalidad por cáncer durante más de cuatro décadas, en más de 3.000 condados a lo largo del país.

277

MAPEAMENTO DO ESTILO DE APRENDIZAGEM DA AGROINDUSTRIA DE CARNE BOVINA EM GOIÁS  

Microsoft Academic Search

O mapeamento do estilo de aprendizagem é a medição da forma de adquirir conhecimento de um indivíduo ou grupo, uma ferramenta desenvolvida por Felder-Silverman aplicada na pesquisa com o objetivo de analisar os cargos e funções das agroindústrias de carne bovina do estado de Goiás. Os quatro estilos de aprendizagem desenvolvidos pela ferramenta possibilitaram chegar ao estilo do segmento: ATIVO,

MARCÉLIO OLIVEIRA RODRIGUES; Reginaldo Santana Figueiredo; Odilon Jose De Oliveira Neto

2008-01-01

278

Movilizaciones étnicas y crítica civilizatoria. Un cuestionamiento a los proyectos estatales en América Latina  

Microsoft Academic Search

Resumen La exposición de la historia y las motivaciones occidentales en las coyunturas de expansión colonial, así como las lógicas políticas de los estados uninacionales que continuaron su dominio sobre los pueblos nativos, han sido abordadas desde muy distintos puntos de vista. Sin embargo, creo que no se ha insisti- do los suficiente sobre las transformaciones sufridas por las colectividades

MIGUEL ALBERTO BARTOLOMÉ

279

A LEI DE RESPONSABILIDADE FISCAL E SEU IMPACTO SOBRE A ORDEM FISCAL NOS MUNICÍPIOS DO RIO GRANDE DO SUL  

Microsoft Academic Search

RESUMO: Em 2000, entrou em vigor a Lei Complementar nº 101 a chamada Lei de Responsabilidade Fiscal (LRF). Surge com o intuito de limitar o endividamento da União, dos Estados e Municípios, ao passo que define os princípios básicos de responsabilidade, derivados da noção de prudência na gestão de recursos públicos. O presente trabalho tem por objetivo avaliar o impacto

Daiane Londero; Daniel Lena; Marchiori Neto; Gilberto Veloso

280

Nova ocorrência de Asiatoceratodus (Osteichthyes, Dipnoiformes) na Formação Alcântara, Eocenomaniano da bacia de São Luís, MA, Brasil  

Microsoft Academic Search

RESUMO - O Cretáceo médio está bem representado na Bacia de São Luís pelos depósitos predominantemente areníticos da Formação Alcântara. Na Ilha do Cajual, norte do Estado do Maranhão, nordeste do Brasil, uma paleocomunidade continental datada como de idade eocenomaniana inclui vegetais, peixes, crocodilomorfos e dinossauros. Duas placas dentárias, coletadas em uma fácies conglomerática, com sete cristas arranjadas de forma

DARCILÉA FERREIRA CASTRO; EDUARDO VIEIRA; MANUEL ALFREDO MEDEIROS

2004-01-01

281

El papel de las Brigadas Internationales en el cine documental extranjero (1936-1939)  

Microsoft Academic Search

El cine fue utilizado como elemento de propaganda durante la Guerra Civil española. Las Brigadas Internacionales nunca tuvieron una productora cinematográfica propia. Por esta razón, algunos documentales fueron filmados en el Reino Unido, los Estados Unidos y Francia, producidos por organismos progresistas. La estructura interna de los brigadistas no es analizada, pero se destaca su solidaridad en la lucha contra

Magi Crusells

2004-01-01

282

A LEITURA DO MUNDO ATRAVÉS DE TEXTOS LITERÁRIOS E IMAGÉTICOS  

Microsoft Academic Search

RESUMO: Este trabalho é parte integrante do processo de formação continuada desenvolvido pela Secretaria de Estado da Educação do Paraná, através do Programa de Desenvolvimento Educacional (PDE). A proposta deste artigo é refletir sobre a importância da leitura imagética e literária críticas no ambiente escolar - especificamente no Ensino Médio -, partindo de seu conceito, passando pela teoria semiótica e

Andréa Fleury; Sérgio Paulo

283

La historia orbital de Deimos y la oblicuidad de Marte  

Microsoft Academic Search

Recientemente, se ha demostrado mediante extensas integraciones numéricas, que la rotación de Marte pasó repetidamente por estados caóticos de movimiento, debido al pasaje por zonas de resonancia spin - órbita. En dichas circunstancias, la oblicuidad marciana pudo haber sufrido grandes excursiones de varias decenas de grados. Las consecuencias de dichas variaciones son de extrema importancia en el contexto de la

A. Brunini; T. Yokoyama

1996-01-01

284

TRATAMIENTO FISCAL DE LOS FACTORES DE RIESGO PARA LA SALUD Y DEL GASTO SANITARIO: REVISIÓN Y PROPUESTAS DE REFORMA  

Microsoft Academic Search

El presente trabajo revisa algunos de los aspectos más destacables de la fiscalidad sobre el consumo de bienes nocivos como instrumento de intervención vinculada a las políticas de salud y a la corrección del fallo de mercado. El objetivo no es otro que el de repasar el estado de conocimiento al respecto, destacando las variables que delimitan el marco de

Guillém López Casasnovas; Esther Martínez García

2001-01-01

285

The Educational Narrativity in the First Period of Oliveira Salazar's Government. Women's Voices in the National Assembly (1935-1945)  

ERIC Educational Resources Information Center

|Oliveira Salazar's accession to the government followed the military coup of 1926, which put an end to the period of democratic republican life. The Constitution approved in 1933 defined the new regime, which came to be known as "Estado Novo". Ideologically sustained by an anti-liberal concept of Catholicism, this political regime would grant…

Adao, Aurea; Remedios, Maria Jose

2005-01-01

286

Vegetais fósseis do Terciário brasileiro  

Microsoft Academic Search

A bacia de Fonseca, situada na região do Quadrilátero Ferrífero, no estado de Minas Gerais, sudeste do Brasil, constitui um clássico exemplo de sedimentos terciários, tendo despertado o interesse de vários pesquisadores, desde a segunda metade do século passado, por conter depósitos de \\

Claudio Limeira Mello; Lílian Paglarelli Bergqvist; Lucy Gomes Sant

287

MÚSICA Y AGRUPACIONES DE CARNAVAL A FINALES DEL SIGLO XX EN ANDALUCÍA OCCIDENTAL. LA REVITALIZACIÓN FESTIVA Y EL RENACIMIENTO DEL CARNAVAL  

Microsoft Academic Search

Con este trabajo pretendemos acercarnos al Carnaval de Andalucía occidental a partir de su recuperación durante la Transición y los gobiernos socialistas en la década de los años ochenta del pasado siglo XX. Este proceso tuvo lugar en un marco de participación ciudadana, modernización económica, estado del bienestar, constitución de las comunidades autónomas, sociedad del espectáculo y del entretenimiento, y

Francisco José García Gallardo

2005-01-01

288

La política de vivienda de interés social en Colombia en los noventa  

Microsoft Academic Search

Este trabajo analiza el desarrollo de la política de vivienda de interés social en Colombia a partir de 1991, cuando se adoptó el sistema de subsidios a la demanda. Este sistema sustituyó al antiguo esquema en el cual el Estado era directamente constructor de viviendas, proveedor de créditos y de subsidios. La nueva política persigue incrementar la demanda efectiva de

María Luisa Chiappe de Villa

1999-01-01

289

Declaración del Instituto Nacional del Cáncer sobre los exámenes selectivos de detección de cáncer de seno  

Cancer.gov

El Instituto Nacional del Cáncer (NCI) agradece la cuidadosa revisión y análisis que ha hecho la Brigada de Servicios Preventivos de los Estados Unidos de la evidencia con respecto a los exámenes de detección de cáncer de seno para mujeres que tienen un riesgo del promedio.Preguntas y Repuestas

290

Late Quaternary palaeoenvironmental change in western Staaten Island (54.5° S, 64° W), Fuegian Archipelago  

Microsoft Academic Search

Late Glacial – Holocene environmental conditions were interpreted in western Isla de los Estados (Staaten Island) from geomorphological and palynological analysis. The geomorphological data from Caleta Lacroix (54°50? S; 64 40? W) indicate the presence of a fossil dune field that suggest exposition of a larger land surface and stronger wind intensity predominantly from SW and W probably during Late Glacial

Ponce Juan Federico; Borromei Ana María; Rabassa Jorge Oscar; Martinez Oscar

2011-01-01

291

Application of FTIR-HATR spectroscopy and multivariate analysis to the quantification of adulterants in Mexican honeys  

Microsoft Academic Search

Fourier transform infrared (FTIR) spectroscopy with attenuated total reflectance (ATR) accessory was used to quantify three different adulterants (corn syrup, high fructose corn syrup and inverted sugar) in honeys of four different locations of México (Chiapas, Oaxaca, Estado de México and Morelos). The optimal calibrations for the three adulterants were developed with partial least squares (PLS). The developed models were

Tzayhri Gallardo-Velázquez; Guillermo Osorio-Revilla; Marlene Zuñiga-de Loa; Yadira Rivera-Espinoza

2009-01-01

292

Efficacy of long-term obesity's treatment with diethylpropion  

Microsoft Academic Search

4 1 MD, MS, MBA, FACN, MFICAN, Head membership of the Board of Directors of Associação Brasileira de Nutrologia (ABRAN\\/Brazil), director of the Department of Prevention and Treatment of Overweight and Obesity - ABRAN\\/Brazil, chief of the Ambulatory of Prevention and Treatment of Overweight and Obesity of ABRAN - Regional Estado do Rio de Janeiro\\/Brazil, master in Medical Sciences (Neurophysiology's

Paulo Giorelli; Durval Ribas-Filho; Socorro Giorelli; Guilherme Giorelli

2008-01-01

293

Valoración Económica y Ambiental Aplicada a Casos del Manejo de la Calidad del Aire y Control de la Contaminación  

Microsoft Academic Search

Este documento fue comisionado por la Red de Medio Ambiente del Diálogo Regional de Política para la III Reunión Hemisférica celebrada los días 9 y 10 de marzo de 2004. Durante las últimas décadas se han establecido derechos y obligaciones ciudadanas; se han definido las funciones del Estado y de los organismos públicos responsables en materia ambiental; se han realizado

Luis A. Cifuentes; Luis Rizzi; Héctor Jorquera; Javier Vergara

2004-01-01

294

POLÍTICAS PÚBLICAS E AÇÕES POPULARES: O CASO DOS ALAGADOS - SALVADOR\\/BA  

Microsoft Academic Search

Resumo: Esta pesquisa analisa o papel das políticas públicas no processo de produção do solo urbano nos Alagados e as implicações dos movimentos populares reivindicando seu direito à cidade. Parte-se do princípio de que tais intervenções do Estado e da comunidade foram relevantes para a continuidade da luta pela morada e pela vida nos Alagados. Busca-se desvendar as contradições das

Janio Santos

2005-01-01

295

Desempenho de um trator operando em solo com diferentes tipos de cobertura vegetal  

Microsoft Academic Search

RESUMO: A eficiência de um trator para desenvolver esforço tratório depende da interação entre o rodado e o solo, envolvendo um complexo conjunto de fatores: característica do rodado, patinagem, transferência de peso do trator, tipo de solo, umidade, estado de compactação, tipo de cobertura do solo, entre outros, que proporcionam diferentes condições de trabalho e interferem no desempenho do trator.

Antonio Gabriel Filho; Suedêmio de L. Silva; Alcir J. Modolo; João C. M. da Silveira

2004-01-01

296

FOTOSSENSIBILIZAÇÃO EM ANIMAIS DE PRODUÇÃO NA REGIÃO SEMI-ÁRIDA DO RIO GRANDE DO NORTE  

Microsoft Academic Search

O presente trabalho objetivou estudar a ocorrência de surtos naturais de fotossensibilização que vêm ocorrendo em diversas espécies animais na região semi-árida do Estado do Rio Grande do Norte. Foram visitadas 17 propriedades nas quais estavam ocorrendo casos naturais desta patologia. Foram realizadas entrevistas com os tratadores, exames clínicos e provas séricas bioquímicas de função hepática nos animais afetados. Também

M. F. Macedo; M. B. Bezerra; B. Soto Blanco

297

Health-related fitness assessment in childhood and adolescence: a European approach based on the AVENA, EYHS and HELENA studies  

Microsoft Academic Search

Results from cross-sectional and longitudinal studies such as Alimentación y Valoración del Estado Nutricional en Adolescentes: Food and Assessment of the Nutritional Status of Spanish Adolescents (AVENA) and the European Youth Heart Study (EYHS) respectively, highlight physical fitness as a key health marker in childhood and adolescence. Moderate and vigourous levels of physical activity stimulate functional adaptation of all tissues

Jonatan R. Ruiz; Francisco B. Ortega; Angel Gutierrez; Dirk Meusel; Michael Sjöström; Manuel J. Castillo

2006-01-01

298

Sensoriamento Remoto de Sistemas Aquaticos (Remote Sensing of Aquatic System).  

National Technical Information Service (NTIS)

This is the first technical report of the 'Remote Sensing of the Aquatic Systems' Project sent to the 'Fundasao de Amparo a Pesquisa do Estado de Sao Paulo' describing the activities performed between May 1989 and June 1990. The methodology and technical ...

E. M. Leaodemoraesnovo C. Z. F. Braga

1991-01-01

299

REDE DE DINAMIZAÇÃO DAS FEIRAS DA AGRICULTURA FAMILIAR – REDIFEIRA: UMA ALTERNATIVA PARA A INCLUSÃO SOCIOECONÔMICA DAS FAMÍLIAS RURAIS  

Microsoft Academic Search

A Rede de Dinamização das Feiras da Agricultura Familiar – REDIfeira, projeto integrante do Programa de Extensão Universitária – Universidade Sem Fronteiras, da Secretaria de Ciência, Tecnologia e Ensino Superior (SETI) do Governo do Estado do Paraná, tem como objetivo, dinamizar a produção e a comercialização dos produtos produzidos pela Agricultura Familiar nos municípios do Programa de Desenvolvimento da Região

Ednaldo Michellon; Tiago Ribeiro Costa; Gisiane July Stroher; Lucas Souza Camacho; Paulo Sipoli Pereira

2008-01-01

300

ESTILO DE VIDA DE PROFESSORES UNIVERSITÁRIOS: UMA ESTRATÉGIA PARA A PROMOÇÃO DA SAÚDE DO TRABALHADOR Lifestyle of university professors: a strategy for worker's health promotion  

Microsoft Academic Search

RESUMO Objetivo: Avaliar o estilo de vida de professores universitários, verificando a existência de associação com fatores sócio-demográficos (sexo, idade, estado civil, classificação sócio- econômica) e ocupacionais (tempo e regime de trabalho). Método: Estudo transversal com características descritivas. A amostra foi composta por 76 professores selecionados aleatoriamente, que responderam voluntariamente o instrumento de coleta de informações composto de três partes:

Marcos Henrique Fernandes; Almeida LGD; Rocha VM; Gomes Porto; Dias de Almeida; Vera Maria da Rocha

301

ARTE RUPESTRE EN ASENTAMIENTOS DEL PERÍODO TARDÍO EN LOS VALLES DE LLUTA Y AZAPA, NORTE DE CHILE ROCK ART IN LATE HORIZON SETTLEMENTS IN THE VALLEYS OF LLUTA AND AZAPA, NORTHERN CHILE  

Microsoft Academic Search

Este trabajo busca contribuir a la discusión sobre el proceso de expansión del estado Inka hacia las áreas periféricas del sur de los Andes, particularmente en los valles costeros Lluta y Azapa del extremo norte de Chile. Este proceso es analizado explorando el rol del arte rupestre -como soporte material de transmisión de ideología- en el proceso de integración que

Daniela Valenzuela; Calogero M. Santoro; Álvaro Romero

2004-01-01

302

Proyecto para prestación de servicios \\  

Microsoft Academic Search

Esta presentación fue expuesta durante el Tercer Encuentro Técnico de Capacitación en Materia de Estructuración de Proyectos de Asociación Público-Privada, llevado a cabo en Mérida, Yucatán, México, el 20, 21 y 22 de enero de 2010. El Plan de Desarrollo del Estado de México 2005-2011 establece que se debe generar un acceso de calidad a los servicios de salud, para

Miguel Donovan

2010-01-01

303

The Politics of Re-Territorialisation: Space, Scale and Teachers as a Professional Class  

Microsoft Academic Search

Resumo Este artigo, utilizando escala, espaço e território como quadro conceitual, busca explorar a mudança das relações de classe social para o professorado como resultado da reestruturação, juntamente com as implicações estratégicas das lutas políticas organizadas pelo magistério e os meios tradicionais de apresentação de seus interesses. Inicia, primeiro, com alguns comentários breves sobre globalização e reestruturação do estado e

Susan L. Robertson

2002-01-01

304

Different views over Hansen's Disease Control Program actions: the health care professionals' perspective in Brazil  

Microsoft Academic Search

RESUMO Baseado na percepção dos profissionais de saúde envolvidos nas ações de gerência e assistência do Programa de Controle da Hanseníase desenvolveu-se estudo qualitativo para construção do contexto real dessas ações. Foram incluídos profissionais de estados da região Norte e Nordeste que participaram de Oficinas de Pesquisas Operacionais realizadas em 2006. No total, 16 profissionais participaram do estudo, tendo como

Alberto Novaes Ramos Jr; Maria Vaudelice Mot; Duane Hinders; Márcia Gomide da Silva

305

Muerte súbita en el deportista. Requerimientos mínimos antes de realizar deporte de competición  

Microsoft Academic Search

Para la mayor parte de nuestra sociedad los de- portistas representan el estado de máxima salud, por lo que aun siendo muy infrecuente, la muerte súbita de un deportista joven es siempre un acon- tecimiento con un gran impacto social y que pro- voca una gran inquietud en su entorno (médicos, deportistas, entrenadores, etc.). Esto, unido al pro- gresivo incremento

Araceli Boraita Pérez; Luis Serratosa Fernández; Consejo Superior de Deportes

306

Les disparités internationales de comportements d'épargne  

Microsoft Academic Search

[spa] Las disparidades internacionales de comportamientos de ahorro. Un análisis de los Estados Unidos, del Japon y de Europa a través del ciclo de vida - La concentración persistente de los desequilibrios exteriores en ciertos países índustrializados constituye un problema mayor en los años ochenta. La misma no refleja solo fenómenos reales o monetarios (competitividad, especialización, tasas de cambio) sino

Virginie Coudert

1990-01-01

307

COMPORTAMIENTO DE Ca, Mg Y KEN RESPUESTA A LA APLICACION DE FERTILIZANTE POTASICO Y DE CAL DOLOMITICA EN UN ANDISOL DE LA ZONA SUR DE COSTA RICA 1  

Microsoft Academic Search

Con el objetivo de estudiar el estado y el com- Behavior of Ca, Mg and K under potasic portamiento de Ca, Mg y K tanto en el suelo como fertilizer and dolomitic liming in a Costa en la planta, asi como sus posibles intelrelaciones, se Rican Andisol. An experiment was established sembro un ensayo sobre un Typic Hapludand de baja

Carlos Henriquez; Floria Bertsch

308

Fallas estructurales del mercado de maíz. Comentario a Robles y García  

Microsoft Academic Search

El artículo es un esfuerzo valioso por parte de economistas para poner (por fin) a funcionar el instrumental de la teoría económica sobre un tema del que sólo parecen ocuparse antropólogos y agrónomos. La carencia de investigación empírica y de reflexión analítica sobre aspectos centrales de la realidad económica del país habla mal del estado que guarda la disciplina de

Ángel Palerm

1995-01-01

309

The environmental science and economic growth  

Microsoft Academic Search

Las acciones derivadas de la política económica deben tender, en términos generales, al logro del desarrollo económico. Este habrá de traducirse en bienestar social y en el mejoramiento de la calidad de la vida. El papel del Estado es fundamental en la formulación de tal política y en la vigilancia para que se cumpla. De esta manera se espera que

Nicolás Sánchez

1988-01-01

310

Acute respiratory infections control in the context of the IMCI strategy in the Americas Controle das infecções respiratórias agudas no contexto da estrategia AIDPI nas Américas  

Microsoft Academic Search

As infecções respiratórias agudas (IRA) são importante causa de morbidade e mortalidade em menores de cinco anos. Importantes contrastes são observados em relação a isto nos diferentes países das Américas, e também entre regiões ou estados de um mesmo país. A morbidade está associdada a vários fatores, especialmente com a situação nutri- cional das pacientes e o tempo de aleitamento

Yehuda Benguigui

311

Crimen en Colombia: análisis y sugerencias de política  

Microsoft Academic Search

Introducción: Las tasas de homicidio en Colombia están entre las más altas del mundo. En el pico de 1991, casi mil colombianos fueron asesinados en un año. La tasa de homicidios en Colombia es tres veces más alta que la de Brasil o México, y diez veces mayor que la de Argentina, Uruguay o que la de los Estados Unidos.

Levitt Steven; Mauricio Rubio

2000-01-01

312

Asambleas tribales , \\  

Microsoft Academic Search

Durante años mis temas de investigación y de intervención en el campo de las adicciones han estado atravesados por las dimensiones de género (diferencias en las modalidades de adicción para las mujeres y los varones, y formas de ayudar específicas en cada caso) y por la relación entre la adicción a sustancias y los abusos (maltratos, violencia) hacia las personas.

Cristina Ravazzola

313

Una revisión de los beneficios del aporte complementario de nutrientes durante el embarazo: desde hierro y ácido fólico hasta probióticos pasando por ácidos grasos poliinsaturados de cadena larga  

Microsoft Academic Search

ResumenEn esta revisión se resume el conocimiento actual sobre la eficacia de los aportes complementarios prenatales de nutrientes, desde hierro y ácido fólico (HAF), que representan el patrón asistencial en muchas partes del mundo, hasta los más novedosos como ácidos grasos ?–3 y probióticos, en la mejora de los desenlaces del estado de salud materno-infantil. En ensayos aleatorios controlados se

Usha Ramakrishnan

2010-01-01

314

Toxicología Postmortem: estudio analítico de cocaína en cerebro  

Microsoft Academic Search

Resumen: El screening de drogas de abuso postmortem en casos de presunta causa de muerte por sobredosis es un análisis habitual en todos los laboratorios toxicológicos. La matriz más utilizada y común para el estudio es la sangre debido a su relación temporal con los efectos en el individuo y su estado en el momento de la muerte. Otras matrices

Mora A; Arroyo A; Sánchez M

2008-01-01

315

Macro Volatility and Financial Institutions  

Microsoft Academic Search

In 2004, with support from IDRC, CEDES (Centro de Estudios de Estado y Sociedad) launched a global project to generate proposals for the reform of national financial institutions in developing countries, and for the building of global and regional financial architectures needed to support their development. Specialized teams led by local researchers from Thailand, China, South Africa, Nigeria, Russia, Brazil,

José María Fanelli

316

DESARROLLO Y PROVISIÓN INICIAL DE ENTRENAMIENTO INTENSIVO EN LAS HABILIDADES SOCIALES Y PREPARACIÓN PARA EL TRABAJO EN ADULTOS CON TRAUMATISMO ENCÉFALO-CRANEAL: POSIBILIDADES DE REPLICACIÓN EN EL RÍO DE LA PLATA  

Microsoft Academic Search

Resumen Los déficit en habilidades sociales luego de traumatismo encéfalo-craneal severo son predominantes. Sin embargo, el desarrollo y la provisión de tratamientos preventivos durante el proceso de rehabilita- ción no han estado a la par de las necesidades en esta área. Este estudio describe el desarrollo conceptual y la provisión inicial de programas intensivos de entrenamiento de habilidades sociales y

THOMAS D. UPTON; PAOLA PREMUDA; JAMES BORDIERI

317

SÍTIOS DE NIDIFICAÇÃO DE TUIUIÚ Jabiru mycteria (AVES: CICONIIDAE) NO PANTANAL DE POCONÉ, MATO GROSSO  

Microsoft Academic Search

RESUMO: Foram estudados 120 ninhos de tuiuiú (Jabiru mycteria), durante três estações reprodutivas consecutivas de 1995 a 1977, na Estrada-Parque Transpantaneira e fazendas limítrofes, localizadas no Pantanal de Poconé, no Estado de Mato Grosso. Foram caracterizadas e monitoradas as árvores que serviam de suporte aos ninhos de tuiuiú, medidos a altura do ninho ao solo, o ângulo do galho com

DALCI MAURÍCIO MIRANDA DE OLIVEIRA; ROBERTO BRANDÃO

318

Notes on the Seven-coloured Tanager Tangara fastuosa in north-east Brazil  

Microsoft Academic Search

São apresentadas novas localidades de ocorrência e extensões de distribuição geográfica para o pintor-verdadeiro Tangara fastuosa, uma espécie endêmica e ameaçada de extinção, que ocorre apenas em ambientes florestais dos estados do Rio Grande do Norte até Alagoas, no nordeste brasileiro. São reportados também novos dados sobre preferências de habitat, comportamento, ecologia e conservação desta espécie. A distribuição geográfica deste

Luís Fábio Silveira; Fábio Olmos; Sônia Aline Roda; Adrian J. Long

319

RESPUESTA TEMPORAL A H2 DE CAPACITORES MOS CON COMPUERTA DE Mo TEMPORAL RESPONSE TO H2 IN Mo GATE MOS CAPACITORS  

Microsoft Academic Search

. La fotocorriente inducida por iluminación pulsada, de un capacitor MOS con compuerta de Mo, provisto de ventana óptica, se emplea como monitor de su estado de carga, frente a estímulos químicos con concentraciones crecientes de H2 en N2 de hasta 1000 ppm. Se describen las respuestas inducidas por transporte a la interfaz metal-dieléctrico. Los resultados confirman que la sensibilidad

R. M. Lombardi; R. Aragón

320

Mecanismos psicofisiológicos implicados en la regulación afectiva y la restricción alimentaria de mujeres con riesgo de padecer bulimia nerviosa  

Microsoft Academic Search

El objetivo del estudio fue conocer el efecto de visualizar imágenes de comida bajo diferentes estados de ánimo y diferentes condiciones de restricción alimentaria en la modulación emocional de dos refle- jos defensivos (sobresalto motor y defensa cardiaca). 72 mujeres con riesgo de padecer bulimia ner- viosa fueron asignadas a dos grupos: 1) un grupo al que se inducía un

Sonia Rodríguez; José Luis Mata; Silvia Moreno; Jaime Vila

2007-01-01

321

Lifelines-Pancreatic-Cancer-SPA-2013  

Cancer.gov

LOS HISPANOS Y EL CÁNCER DE PÁNCREAS: COSAS PARA SABER por el Instituto Nacional del Cáncer Una de las causas principales de muerte relacionadas con el cáncer en los hispanos o latinos de los Estados Unidos es una enfermedad poco común pero con frecuencia

322

Empresa y entorno económico, experiencia del Grupo de Estudios en Economía y Empresa de la Universidad Eafit  

Microsoft Academic Search

En este artículo se presentan los fundamentos conceptuales de la Política Coyuntural de la Empresa, la cual considera que los estados financieros de las empresas reflejan sus relaciones con el entorno, y las aplicaciones realizadas por el Grupo de Estudios en Economía y Empresa. Luego de introducir los principios fundamentales, se trata el tema de la visión de la empresa

Javier Santiago Ortiz

2004-01-01

323

PIGMENTATION CHARACTERS: AN EXAMPLE OF SANKOFF CHARACTERS FROM TINAMOU PHYLOGENY  

Microsoft Academic Search

Resumen. - Caracteres de pigmentación: ejemplos de caracteres de Sankoff en una filogenia de perdices. - En un análisis cladístico de perdices, se prestó una atención especial a la definición y codifica- ción de caracteres tradicionalmente cuestionados para la filogenia en aves. Por ejemplo, se definieron cos- tos de transformación entre estados (caracteres de Sankoff) para analizar los colores de

Sara Bertelli

2004-01-01

324

FENOLOGIA REPRODUCTIVA EN TRES TIPOS DE VEGETACION DE LA PLANICIE COSTERA DE LA PENINSULA DE PARAGUANA, VENEZUELA  

Microsoft Academic Search

Reproductive phenology of 51 plant species was evaluated according to life form and vegetation types in a coastal plain of the Paraguaná Peninsula, Estado Falcón, Venezuela. Plant species distribution according to three vegetation types (herbaceous littoral, herbaceous psamophil, and mangrove area) was determined. Life form frequency was different according to vegetation type. Herbaceous littoral and herbaceous psamophil vegetation were dominated

Luis José Lemus-Jiménez; Nelson Ramírez

325

Teoría de los bienes públicos y aplicaciones prácticas. Presentación de un número monográfico sobre“Bienes públicos”\\/The Theory of Public Goods and its Empirical Applications. Introduction to a Monographic Issue on Public Goods  

Microsoft Academic Search

Se ofrece un panorama muy breve del estado actual de la teoría de los bienes públicos y de sus aplicaciones prácticas, esto es, de los estudios empíricos sobre la demanda y provisión de bienes públicos, así como de algunas de las limitaciones tanto teóricas como empíricas que han surgido en los últimos años. A continuación se presentan los artículos incluidos

FRANCISCO JAVIER BRAÑA PINO

2004-01-01

326

Processamento cognitivo \\  

Microsoft Academic Search

Resumo Objetivo: O transtorno afetivo bipolar está associado ao comprometimento funcional persistente. Apesar de muitas pesquisas demon- strarem que bipolares podem apresentar déficits cognitivos, um número menor de trabalhos avaliou o papel de prejuízos no proces- samento cognitivo social, a Teoria da Mente (relacionado à capacidade de inferir estados mentais), no aparecimento de sintomas e complicações sociais em bipolares. O

Hélio Anderson Tonelli

2009-01-01

327

Multivariant analysis in anthropometric indexes and energy intake in university students  

Microsoft Academic Search

Resumo - O excesso de peso é considerado uma epidemia que afeta muitos indivíduos no mundo e a sua prevenção é um desafio para os pesquisadores da área da Saúde Pública. Através da antropometria e do estudo da ingestão energética e a sua associação, podemos inferir o estado nutricional dos sujeitos. Nosso objetivo é estudar a relação entre os índices

Mauricio Jesús; Rivas Gil; Elia Margarita; Lagrange de Castillo; Hector Antonio Herrera Mogollón; Gloria Cabral

328

Estudio para la prevención del cáncer necesita voluntarias: El Estudio del Tamoxifeno y Raloxifeno (STAR) se realiza en Norteamérica  

Cancer.gov

El Estudio del Tamoxifeno y Raloxifeno (STAR, por sus siglas en inglés), uno de los estudios más importantes realizados para la prevención del cáncer del seno, está ahora reclutando voluntarias en más de 400 centros en los Estados Unidos, Puerto Rico y Canadá.

329

PROTECÇÃO PATRIMONIAL & DESENVOLVIMENTO TERRITORIAL. Três Casos Internacionais: Stonehenge, Dordonha, Aragão  

Microsoft Academic Search

** Resumo : Os Estados e as suas administrações públicas detêm um papel preponderante nos domínios da protecção patrimonial e do desenvolvimento territorial. Com efeito, se por um lado a intervenção dos agentes públicos se justifica pela necessidade de potenciar melhorias nas condições de vida das populações, por outro lado, vários são os desafios que se colocam na definição das

Fernando Pau-Preto

330

Reporting on health-related research in two prestigious Brazilian newspapers  

PubMed Central

OBJECTIVES: The dissemination of health-related news through newspapers can influence the behavior of patients and of health care providers. We conducted a study to analyze the characteristics of health-related research published by two leading Brazilian newspapers. METHOD: We retrospectively evaluated health-related news published in the electronic versions of the newspapers Folha de São Paulo and O Estado de São Paulo over a period of three months (July through September, 2009). Only articles mentioning medical research were included. The articles were categorized according to topic, source, study location and the nature of the headline. We also analyzed the presence of background information on the topic, citations of medical periodicals, national contextualization and references to products or companies. RESULTS: Scientific research articles corresponded to 57% and 20% of health-related articles published by Folha de São Paulo and O Estado de São Paulo, respectively. Folha de São Paulo published significantly more articles about national studies, and most articles were written by its own staff. In contrast, most articles in O Estado de São Paulo came from news agencies. Folha de São Paulo also better contextualized its reports for Brazilian society. O Estado de São Paulo tended to cite the name of the periodical in which the study was published more frequently, but their articles lacked national contextualization. CONCLUSION: The results showed a significant difference in the way in which the studied newspapers report on health-related research. Folha de São Paulo tends to write its own articles and more frequently publishes the results of national research, whereas O Estado de São Paulo publishes articles that originate in news agencies, most of which have little national contextualization.

Teixeira, Ricardo Afonso; Carlini, Marcela; de Carvalho Jatoba e Sousa, Arthur; Fernandes, Paula Teixeira; Camargo, Vera Regina Toledo; Vogt, Carlos; Li, Li Min

2012-01-01

331

PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones  

NASA Astrophysics Data System (ADS)

Entre las áreas hacia donde ha evolucionado la Química en los últimos años están los estudios de sistemas con especies reactivas de alta energía y los dominados por fuerzas intermoleculares débiles, con energías de unas pocas kcal/mol. En efecto, el estudio de las propiedades de los iones, comenzando por su relación con la molécula neutra de la que procede, la energía de ionización, los estados vibracionales y rotacionales, energías de enlace de Van der Waals entre el ión y una amplia variedad de otras moléculas, sus confórmeros o isómeros y sus reacciones o semi-reacciones químicas están en la raíz de la necesidad de la espectroscopía conocida como PFI-ZEKE, Pulsed Field Ionization-Zero Electron Kinetic Energy. Entre las aplicaciones que requieren estos conocimientos se encuentran la generación de plasmas para la fabricación de semiconductores, memorias magnéticas, etc, así como los sistemas astrofísicos, la ionosfera terrestre, etc. La espectroscopía ZEKE es una evolución de las de fluorescencia inducida por láser, LIF, ionización multifotónica acrecentada por resonancia, REMPI, con uno y dos colores y acoplada a un sistema de tiempo de vuelo, REMPI-TOF-MS, y las espectroscopías de doble resonancia IR-UV y UV-UV. Sus espectros y la ayuda de cálculos ab inicio permite determinar las energías de enlace de complejos de van der Waals en estados fundamental y excitados, identificar confórmeros e isómeros, obtener energías de ionización experimentales aproximadas (100 cm-1) y otras variables de interés. Al igual que con LIF, REMPI y dobles resonancias, es posible utilizar muestras gaseosas, pero los espectros están muy saturados de bandas y su interpretación es difícil o imposible. Se evitan estas dificultades estudiando las moléculas o complejos en expansiones supersónicas, donde la T de los grados de libertad solo alcanzan unos pocos K. Para realizar experimentos de ZEKE hay que utilizar una propiedad recientemente descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de ? s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y otras propiedades de interés, discutiendo sus resultados.

Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

332

Informe a la Nación encuentra bajas continuas en muchos índices de cáncer;su sección especial destaca cambios en los índices de tumores cerebrales y en supervivencia  

Cancer.gov

Los índices de mortalidad en los Estados Unidos de todos los cánceres en hombres y mujeres siguieron bajando entre 2003 y 2007, que es el período más reciente del que se disponen datos, según el último Informe Anual a la Nación sobre el Estado del Cáncer. El informe encuentra también que el índice general combinado de nuevos diagnósticos de cáncer en hombres y mujeres decreció un promedio un poco menos de 1% por año en el mismo período.

333

Prevalencia de deficiencia subclínica de vitamina A y desnutrición en niños marginales de Maracaibo - Venezuela  

Microsoft Academic Search

RESUMEN. El presente estudio fue realizado para estimar la prevalencia de deficiencia de vitamina A en niños, mediante examen clínico, oftalmológico y por citología de impresión conjuntival (CIC); y el estado nutricional, analizando los indicadores antropométricos T\\/\\/E, P\\/\\/E y P\\/\\/T. La población de estudio incluyó 157 niños, 2-6 años de edad, provenientes de barrios marginales urbanos y rurales de Maracaibo,

Haydée V. Castejón; Pablo Ortega; María E. Díaz; Daisy Amaya; Gisela Gómez; María Ramos; María V. Alvarado; Jesús R. Urrieta

334

CARACTERIZAÇÃO DA PESCA DE LINHA E DINÂMICA DAS FROTAS LINHEIRAS DA BAHIA, BRASIL  

Microsoft Academic Search

RESUMO: A caracterização da pesca de linha e da distribuição batimétrica e sazonal do esforço de pesca das frotas linheiras estabelecidas no estado da Bahia e em operação na costa central, entre Salvador e o norte do Banco de Abrolhos (13-18ºS), foi estudada com base na amostragem de desembarques monitorados pelo Programa REVIZEE em Salvador, Valença, Ilhéus e Porto Seguro

GEORGE OLAVO; PAULO A. S. COSTA; AGNALDO S. MARTINS

335

Resultados comparativos de la reaccion intradermica a la tuberculina - histoplasmina- coccidioidina en Tuberculosos  

Microsoft Academic Search

Resumen  Se estudiaron los resultados comparativos de las reacciones intradérmicas a la Tuberculina, Histoplasmina y Coccidioidina,\\u000a practicadas simultáneamente a 644 enfermos tuberculosos hospitalizados en los Sanatorios „Simón Bolívar“, „Andrés Herrera\\u000a Vegas“, „Luisa Cáceres de Arismendi“ y „Padre Cabrera“, población representativa del aislamiento hospitalario para esta enfermedad\\u000a en el Distrito Federal y Estado Miranda, sin hacer distinción de la clase de tuberculosis

Rafael Fernández Ruiz; Juan Delgado Blanco; Alexis Ilukevich

1961-01-01

336

A domesticação das singularidades. Reflexões sobre o paradigma da prevenção - o caso da epidemia de HIV\\/AIDS The domestication of singularity. Reflections on the HIV\\/AIDS prevention speech paradigm  

Microsoft Academic Search

Resumo Refletindo sobre as estratégias de combate à epidemia de HIV\\/Aids, analisa-se o discurso da prevenção num quadro de subjetivação marcado pela constituição de permanente estado de alerta às situações de risco. Temos observado uma medicalização da vida com a importação para o campo da saúde da idéia de administrar riscos. Configura-se o surgimento de um projeto de vida saudável

Camila Miranda de Amorim

337

Cold-adapted microorganisms as a source of new antimicrobials  

Microsoft Academic Search

Thirty out of 8,000 different colony morphotypes isolated from soil samples of Isla de los Estados were selected based on\\u000a their ability to produce antimicrobials. The significant influence of culture media and incubation temperature on antimicrobial\\u000a production was proved, being LB medium and 8°C the conditions of choice. Most of the psychrotolerant isolates were phylogenetically\\u000a related to Serratia proteamaculans (96.4–97.9%)

Leandro A. Sánchez; Fiorella F. Gómez; Osvaldo D. Delgado

2009-01-01

338

Estudio comparativo de las moléculas isovalentes de interés atmosférico CF3Cl y CF3Br y sus correspondientes halógenos aislados Cl y Br.  

NASA Astrophysics Data System (ADS)

Los estados Rydberg moleculares han suscitado en los últimos años un creciente interés entre los espectroscopistas experimentales, motivado en parte por el desarrollo de nuevas técnicas espectroscópicas capaces de investigar estos estados altamente excitados electrónicamente. Los procesos de fotoabsorción que implican estados Rydberg en los derivados halogenados del metano son de gran importancia, debido a su abundancia en la atmósfera y a sus implicaciones medioambientales. Por ello, la obtención de datos relativos a sus fuerzas de oscilador es de gran interés. En este trabajo se aborda el estudio de dichas propiedades para las moléculas isovalentes CF3Cl y CF3Br. Ambas moléculas presentan idéntica estructura electrónica para el estado fundamental por lo que se espera que sus espectros Rydberg presenten grandes similitudes, en ausencia de perturbaciones. Por ello y dada la escasez de datos relativos a fuerzas de oscilador, hemos establecido la corrección de nuestros resultados en base a las analogías esperadas en las intensidades espectrales correspondientes a transiciones análogas. Por otro lado, Novak y col. [1] han encontrado experimentalmente un marcado carácter atómico en el espectro correspondiente a estas moléculas, siendo muy similar a los de los átomos de Cl y Br. Por ello en el presente trabajo, además de establecer la comparación entre ambas moléculas hemos buscado las similitudes con sus respectivos halógenos. Los cálculos relativos a las especies moleculares se han realizado utilizando la Metodología Molécular de Orbítales de Defecto Cuántico (MQDO) [2], mientras que para el estudio de los átomos de Cl y Br se empleó la versión relativista del método (RQDO) [3].

Mayor, E.; Velasco, A. M.; Martín, I.; Lavín, C.

339

Which Benjamin Franklin—Yours or mine? Examining responses to a new story from the historical archaeology site of Franklin court  

Microsoft Academic Search

\\u000a Resumen  La reciente revisión de las campañas arqueológicas llevadas a cabo en la mansión de Benjamín Franklin en Filadelfia (excavada\\u000a entre 1953 y 1975) revelan una nueva hístoría muy significativa para las comunidades que viven en la actualidad en Estados\\u000a Unidos. La historia de Franklin, inicialmente poseedor de esclavos y posteriormente abolicionista da un giro completo cuando,\\u000a en sentido figurado, los

Patrice L. Jeppson; Benjamin Franklin

2006-01-01

340

Some selected findings of the princeton fertility study: 1963  

Microsoft Academic Search

\\u000a Resumen  Deepués de tres años se hizo una reencuesta de una muestra probabilística de respondientes que al principio vivían en siete\\u000a de las áreas metropolitanas más grandes de los Estados Unidos y que habían tenido el segundo hijo seis meses antis de la primera\\u000a entrevista. Se encontró en la encuesta anterior que la efectividad de la contraconcepcíon fue comparativamente baja entre

Charles F. Westoff; Robert G. Potter; Philip C. Sagi

1964-01-01

341

Premarital pregnancies and out-of-wedlock births in denmark, 1950–65  

Microsoft Academic Search

\\u000a Resumen  A pesar de que una comprensiva investigación de los modelos de espaciamiento de nacimientos requiere tambien la consideración\\u000a de aquellos que son concebidos antes del matrimonio, la información detallada sobre esios nacimientos frecuentemente no existe,\\u000a sobre todo en los Estados Unidos. En cambio, las estadisticas de Dinamarca sobre primeros nacimientos de acuerdo a la duración\\u000a del matrimonio, y de nacimientos

Sidney Goldstein

1967-01-01

342

Análisis del comportamiento estructural de la basílica del Pilar de Zaragoza  

Microsoft Academic Search

En el artículo se presentan los trabajos de desarrollo y validación de un conjunto de modelos estructurales\\u000ade la basílica del Pilar de Zaragoza planteados con el objetivo de aproximar el estado estructural actual del\\u000atemplo y su nivel de seguridad. Los modelos numéricos se han formulado aplicando el MEF en teoría lineal\\u000ay no lineal, incluyendo el proceso constructivo

Luis E. Romera; Santiago Hernández; José Manuel Reinosa

1970-01-01

343

Evaluation of birth statistics derived retrospectively from fertility histories reported in a national population survey: United States, 1945–64  

Microsoft Academic Search

\\u000a Resumen  Este artículo evalua las estimaciones retrospectivas del numero de nacimientos y tasas de natalidad para los Estados Unidos\\u000a derivadas de las historias de fertilidad recogidas en un survey representativo de la poblacion nacional conducido en 1965.\\u000a Más especificamenie, este artículo se centra en la relación entre las variaciones en la calidad de las estadísticas de fertilidad\\u000a derivadas del survey y

Monroe G. Sirken; Georges Sabagh

1968-01-01

344

CONTROLE DA FORMIGA-PRETA-PASTADEIRA, Acromyrmex crassispinus, COM FORMICIDAS EM PÓ CONTROL OF THE BLACK LEAF CUTTING ANT, Acromyrmex crassispinus, WITH POWDERED FORMICIDES  

Microsoft Academic Search

Com o objetivo de buscar alternativas no controle químico da formiga-preta -pastadeira, Acromyrmex crassispinus (Forel, 1909) (Hymenoptera: Formicidae), foram instalados quatro ensaios com formicidas em pó, em Santa Maria, Estado do Rio Grande do Sul, entre 1996 e 1998. Avaliaram-se, em formigueiros grandes (80cm ou mais de diâmetro), doses de Fentiom (50g i.a.\\/kg), de Imidacloprid (4g i.a.\\/kg), de Betaciflutrina (2g

Henrique Moreira Link; Fábio Moreira Link; Dionisio Link

345

Boletín del Instituto Nacional del Cáncer - 07-20-2010  

Cancer.gov

El doctor Harold Varmus, acompañado de su esposa Constance Casey (centro), presta juramento como director del NCI ante la Secretaria del Departamento de Salud y Servicios Humanos, Kathleen Sebelius, el lunes 12 de julio. (Foto cortesía de Chris Smith) El 12 de julio, el doctor Harold Varmus prestó juramento ante la Secretaria del Departamento de Salud y Servicios Humanos de los Estados Unidos, Kathleen Sebelios, como el decimocuarto director del Instituto Nacional del Cáncer.

346

TOXICIDAD DE ACEITES, ESENCIAS Y EXTRACTOS VEGETALES EN LARVAS DE MOSQUITO CULEX QUINQUEFASCIATUS SAY (DIPTERA: CULICIDAE)  

Microsoft Academic Search

Se evaluaron 51 especies de plantas del estado de Oaxaca, México; 39 como extractos acuosos al 5 y 15% y 21 al 25%, y como extractos acetónicos tres especies con cinco dosis (0.1, 0.01, 0.001, 0.0001 y 0.00001%). Además de ocho aceites vegetales a tres dosis (0.1, 0.01 y 0.001%) y 11 esencias vegetales comerciales con cuatro dosis (0.1, 0.01,

Rafael PÉREZ-PACHECO; Cesáreo RODRÍGUEZ HERNÁNDEZ; Joel LARA-REYNA; Roberto MONTES BELMONT; Gustavo RAMÍREZ VALVERDE

347

A quantitative study of the determinants of fertility behavior  

Microsoft Academic Search

\\u000a Resumen  En los últimos años la literatura revela un gran interés en el estudio cuantitativo de los determinantes de la fecundidad.\\u000a Becker presenta bastantes evidencias en un invalorable marco teórico. Mincer provee evidencias e ideas adicionales. Silver\\u000a ha estudiado la respuesta de las tasas de natalidad a los ciclos económicos, para diferentes paises y varios grupos de población\\u000a en Estados Unidos.

Stanley Friedlander; Morris Silver

1967-01-01

348

The effect of electrolytes on dolomite dissolution: nanoscale observations using in situ Atomic Force Microscopy  

NASA Astrophysics Data System (ADS)

Dissolution of carbonate minerals is one of the main chemical reactions occurring at shallow levels in the crust of the Earth and has a paramount importance for a wide range of geological and biological processes. Calcite (CaCO3), and to a lesser extent dolomite (CaMg(CO3)2), are the major carbonate minerals in sedimentary rocks and building stone materials. The dissolution of calcite has been thoroughly investigated over a range of conditions and solution compositions. In contrast, dolomite dissolution studies have been traditionally hampered by its low reaction rates compared to calcite and its poorly constrained relationship between cation ordering and reactivity (Morse and Arvidson, 2002). Yet important questions like the so-called 'dolomite problem' (e.g. Higgins and Hu, 2005) remain unresolved and more experimental work is needed in order to understand the role of other dissolved species, such as soluble salts, on the kinetics and mechanism of dolomite dissolution and precipitation. We have explored the effect of different electrolytes on the dissolution rate of dolomite by using in situ Atomic Force Microcopy (AFM). Experiments were carried out by passing alkali halide, nitrate and sulfate salt solutions (NaCl, KCl, LiCl, NaI, NaNO3 and Na2SO4) with different ionic strengths (IS = 10-3, 10-2 and 10-1) over dolomite {1014} cleavage surfaces. We show that all electrolytes tested enhance dolomite dissolution. Moreover, the morphology and density of etch pits are controlled by the presence of different ions in solution. The etch pit spreading rate and dolomite dissolution rate depend on both (1) the nature of the electrolyte and (2) the ionic strength. This is in agreement with recent experimental studies on calcite dissolution (Ruiz-Agudo et al., 2010). This study highlights the role of electrolytes in dolomite dissolution and points to a common behavior for carbonate minerals. Our results suggest that soluble salts may play a critical role in the weathering of carbonate rocks, both in the natural environment, as well as in stone buildings and statuary, where the amount of solutes in pore waters is significant and can vary depending on evaporation and condensation phenomena. References Higgins, S.R.; Hu, X. Self-limiting growth on dolomite: Experimental observations with in situ atomic force microscopy. Geochimica et Cosmochimica Acta, 2005, 69 (8), 2085-2094. Morse, J.W.; Arvidson, R.S. The dissolution kinetics of major sedimentary carbonate minerals. Earth-Science Reviews, 2002, 58, 51-84. Ruiz-Agudo, E.; Kowacz, M.; Putnis, C.V.; Putnis, A. The role of background electrolytes on the kinetics and mechanism of calcite dissolution. Geochimica et Cosmochimica Acta, 2010, 74, 1256-1267.

Urosevic, Maja; Ruiz-Agudo, Encarnacion; Putnis, Christine V.; Cardell, Carolina; Rodriguez-Navarro, Carlos; Putnis, Andrew

2010-05-01

349

Neurobiolog?a de la impulsividad y los trastornos de la conducta alimentaria*  

PubMed Central

Resumen Introducción La impulsividad es un rasgo de personalidad multidimensional relacionado con el control del comportamiento y las emociones. Está presente de manera diversa en los trastornos de la conducta alimentaria, particularmente, en la bulimia nerviosa (BN). Aunque la relación entre la impulsividad y BN ha sido objeto de numerosas investigaciones, en la actualidad se desconocen los sustratos neurobiológicos de esta relación. Objetivos Discutir críticamente la evidencia que sugiere que las alteraciones en los sistemas neuronales relacio-nados con las funciones ejecutivas, con la formación de preferencias y con la regulación de los estados emocionales sirven como base para el rasgo de personalidad impulsiva, así como su estado en subgrupos de pacientes con BN. Métodos Búsqueda selectiva de la literatura relevante. Resultados y conclusiones Esta discusión ilustra la complejidad de la relación entre la impulsividad y BN, donde la impulsividad actúa como un factor de vulnerabilidad que puede sensibilizar al sujeto con BN a estados emocionales negativos, durante los cuales modifica el impacto de estímulos internos y externos sobre el comportamiento y su regulación, favoreciendo así patrones de comportamiento maladaptativos e inflexibles.

Orozco-Cabal, Luis Felipe; Herin, David

2009-01-01

350

Advanced Differential Radar Interferometry (A-DInSAR) as integrative tool for a structural geological analysis  

NASA Astrophysics Data System (ADS)

Advanced Differential SAR interferometry (A-DInSAR) is a technique monitoring large-coverage surface deformations using a stack of interferograms generated from several complex SLC SAR images, acquired over the same target area at different times. In this work are described the results of a procedure to calculate terrain motion velocity on highly correlated pixels (E. Biescas, M. Crosetto, M. Agudo, O. Monserrat e B. Crippa: Two Radar Interferometric Approaches to Monitor Slow and Fast Land Deformation, 2007) in two area Gemona - Friuli, Northern Italy, Pollino - Calabria, Southern Italy, and, furthermore, are presented some consideration, based on successful examples of the present analysis. The choice of these pixels whose displacement velocity is calculated depends on the dispersion index value (DA) or using coherence values along the stack interferograms. A-DInSAR technique allows to obtain highly reliable velocity values of the vertical displacement. These values concern the movement of minimum surfaces of about 80m2 at the maximum resolution and the minimum velocity that can be recognized is of the order of mm/y. Because of the high versatility of the technology, because of the large dimensions of the area that can be analyzed (of about 10000Km2) and because of the high precision and reliability of the results obtained, we think it is possible to exploit radar interferometry to obtain some important information about the structural context of the studied area, otherwise very difficult to recognize. Therefore we propose radar interferometry as a valid investigation tool whose results must be considered as an important integration of the data collected in fieldworks.

Crippa, B.; Calcagni, L.; Rossi, G.; Sternai, P.

2009-04-01

351

Se evitaron cerca de 800 000 muertes debido al descenso en tabaquismo  

Cancer.gov

Programas y estrategias de control del tabaco del siglo XX fueron responsables de la prevención de más de 795 000 muertes por cáncer de pulmón en Estados Unidos de 1975 al 2000. Si todo el tabaquismo en este país hubiera cesado después de la publicación del primer informe del Director General de Sanidad sobre el tabaquismo y la salud en 1964, un total de 2,5 millones de personas no habrían muerto por cáncer de pulmón en los 36 años que siguieron a ese informe

352

El cáncer de pulmón y los hispanos: esta es la realidad  

Cancer.gov

Primero, las buenas noticias: el número de casos de cáncer de pulmón diagnosticados entre hispanos es cerca de la mitad del número de casos diagnosticados entre blancos no hispanos en Estados Unidos. Y, del 2000 al 2009, el número de casos entre hombres hispanos disminuyó a un ritmo más acelerado que entre hombres blancos no hispanos y se mantuvo estable entre mujeres hispanas. La razón principal de estas buenas noticias es que los hispanos, en general, tienen menos probabilidad de fumar y tienen menos probabilidad de ser fumadores diarios de cigarrillos en comparación con muchos otros segmentos de la población estadounidense.

353

[Interactive multimedia in nursing: a technology for teaching-learning semiology].  

PubMed

This study was aimed at examining the use of interactive multimedia for the theoretical-practical teaching of Semiology in Nursing It was developed at the Nursing School Alfredo Pinto, Universidade Federal do Estado de Rio de Janeiro, Brazil, from August 2004 to June 2005, with fifth semester students. Opinion forms following the structured interview technique were used to collect the data. The results showed that nursing students think interactive multimedia is an instrument that enhances teaching, making possible the interaction of sounds and images. It represents an element directed at audiovisual senses, optimizing their performance during the patient's physical exam and care. PMID:18767364

Gomes, Aline Verônica de Oliveira; Santiago, Luiz Carlos

2008-03-01

354

Fotometría CCD en el campo del cúmulo abierto Ruprecht 58  

NASA Astrophysics Data System (ADS)

La región de Vela-Puppis contiene varios cúmulos cuyo estudio puede brindarnos información acerca de la cinemática y el estado evolutivo de la población estelar en las zonas externas del disco galáctico. A través de observaciones CCD en los filtros UBV en el campo del cúmulo abierto Ruprecht 58 (?2000= 8h 14m 41s, ?2000=-31o 57'), se han determinado por primera vez los parámetros fundamentales de este cúmulo tales como distancia, enrojecimiento y edad. Se analiza también la estructura de su secuencia principal y la presencia de gigantes y binarias.

Giorgi, E. E.; Vázquez, R. A.; Seggewiss, W.; Ostrov, P.; Solivella, G. R.

355

The effect of water structure and solute hydration on the kinetics of mineral growth and dissolution (Arne Richter Award for Outstanding Young Scientists)  

NASA Astrophysics Data System (ADS)

Classical crystal growth theory relates growth and dissolution rates to the degree of supersaturation. However, the solution composition may also affect the growth rate of carbonate minerals, via the Ca2+ to CO32- concentration ratio (e.g. Perdikouri et al., 2009; Stack and Grantham, 2010), ionic strength (e.g. Ruiz-Agudo et al. 2010) or the presence of organic matter (Hoch et al., 2000). For this reason, the influence of these parameters on the kinetics of mineral growth and dissolution has generated a considerable amount of research in the last decade. In particular, effects of both inorganic and organic impurities on mineral growth and dissolution have been frequently reported in the literature. Commonly, water in contact with rock forming minerals, contains significant and variable amounts of ions in solution. The effect of such ions on dissolution and growth rates has been traditionally ascribed to changes in solubility. However, experimental studies performed on different minerals have shown that the dependence of growth or dissolution rates on ionic strength is complex, and that the effect of ionic strength is not independent of the ionic species producing it. Here, we report investigations aimed at addressing the basic hypothesis that mineral growth and dissolution is governed by complex interactions between solvent structure, surface hydration and the ion solvation environment induced by the presence of electrolytes. It is proposed that any factor affecting ion solvation should alter growth and dissolution rates. These results have opened the possibility of a new understanding of very diverse phenomena in geochemistry and demonstrate the need for the inclusion of this "hydration effect" in the development of predictive models that describe crystal growth and dissolution in complex systems, such as those found in nature. Furthermore, we can hypothesise that ion-assisted dehydration of trace and minor element ions could occur in biological systems, thus affecting their incorporation and isotopic fractionation, providing interesting insights into the possible origin of anomalies found in systems used as environmental proxies and the so-called "vital effects".

Ruiz-Agudo, E.; Putnis, C. V.; Putnis, A.

2012-04-01

356

Evolución de planetas gigantes y posibilidades de su detección directa  

NASA Astrophysics Data System (ADS)

Desde la reciente detección de planetas gigantes orbitando estrellas cercanas de tipo solar por medio de efecto Doppler, uno de los principales problemas, en cuanto al estudio de los sistemas planetarios extrasolares, se refiere a la posibilidad de obtener evidencia directa de su existencia. Esto parece ser factible gracias a que en un futuro cercano entrarán en operación algunos telescopios especialmente adecuados a estos propósitos. Por tal motivo, hemos comenzado desde hace un tiempo un esfuerzo en cuanto al estudio de la evolución planetaria. A tales efectos hemos adaptado el código de evolución estelar de nuestro Observatorio al caso planetario. Las principales diferencias entre el caso estelar y el planetario se encuentran en la ecuación de estado. A tales fines hemos incluído la reciente ecuación de estado de Saumon, Chabrier y Van Horn, las opacidades radiativas de Guillot et al., procesos de quema de Deuterio, etc. También se ha considerado la posible existencia de fases de hielo y roca en el interior planetario. Por el momento hemos despreciado los efectos de la rotación planetaria. Con este código hemos computado la evolución de planetas con masas desde 10 hasta 0.3 masas de Júpiter. Utilizando nuestros resultados numéricos discutimos la detectabilidad de estos objetos en condiciones realistas.

Brunini, A.; Benvenuto, O. G.

357

Ensino e divulgação de astronomia no Planetário de Campinas  

NASA Astrophysics Data System (ADS)

Projeto desenvolvido em 1981 por professores da Unicamp, sob a coordenação do Prof. Dr. Carlos Alfredo Argüello propunha a instalação de um Planetário em Campinas. Convênio firmado em 1982 entre a Unicamp, a Prefeitura de Campinas, a Funcamp e a Academia de Ciências do Estado de São Paulo, possibilitou a aquisição de um planetário Zeiss ZKP2, através do MEC, e em 28 de outubro de 1987 foi inaugurado o Planetário de Campinas. Desde então várias atividades de ensino e divulgação da Astronomia foram desenvolvidas regularmente. A verificação dos registros das atividades realizadas mostra um alto índice de atendimento, considerada a capacidade das instalações (sala de projeção para 60 pessoas, auditório com 45 poltronas e hall de exposições). As atividades dirigidas ao público, estudantes e professores, atenderam cerca de 400.000 participantes nos quase 16 anos de sua existência. Além de sessões públicas e escolares, com duração de 1 hora, são oferecidas às escolas vários outros tipos de atividades, com duração de 2,5 horas. Abordam diversos temas e são dirigidas a diferentes níveis de escolaridade. Cursos para o público e para professores, palestras, exposições e eventos especiais completam o quadro de atividades regulares. Mesmo enfrentando quase sempre dificuldades financeiras e administrativas verifica-se que o Planetário de Campinas realizou um trabalho quantitativamente e qualitativamente satisfatório, prestando bom serviços à comunidade de Campinas e de outras cidades de São Paulo e outros Estados. Isso é também atestado pela grande procura de reservas para suas atividades.

Faria, R. P.

2003-08-01

358

TGS pipeline primed for Argentine growth, CEO says  

SciTech Connect

Nowhere in Latin America has the privatization process been more aggressively pursued than in Argentina where President Carlos Menem has successfully turned over the bulk of state companies to the private sector. In the energy sector, that meant the divestiture in 1992 of Gas del Estado, the state-owned integrated gas transportation and distribution company. It was split in two transportation companies: Transportadora de Gas del Sur (TGS) and Transportadora de Gas del Norte (TGN), and eight distribution companies. TGS is the largest transporter of natural gas in Argentina, delivering more than 60 percent of that nation`s total gas consumption with a capacity of 1.9 Bcf/d. This is the second in a series of Pipeline and Gas Journal special reports that discuss the evolving strategies of the natural gas industry as it continues to restructure amid deregulation. The article focuses on TGS, the Argentine pipeline system in which Enron Corp. is a key participant.

Share, J.

1997-03-01

359

Sexual competitiveness and compatibility between mass-reared sterile flies and wild populations of Anastrepha Ludens (Diptera: Tephritidae) from different regions in Mexico  

SciTech Connect

The mass-reared colony of Anastrepha ludens (Loew) currently used in Mexico for suppression of the Mexican fruit fly has been in use for over 10 years. Sterile flies are released into a wide range of environmental conditions as part of an integrated area-wide approach to suppress diverse populations of this pest in the Mexican Republic. This paper assesses the performance of the sterile flies interacting with wild populations from the different environments. We investigated the sexual compatibility and competitiveness of the sterile flies when competing with wild populations from 6 representatives Mexican states: Nuevo Leon, Tamaulipas, Sinaloa, Nayarit, Michoacan, and Chiapas. Results show that the males of the wild populations differed in the time to the onset and peak of sexual activity. Nevertheless, the index of sexual isolation (ISI) reflected sexual compatibility between the populations and the mass-reared strain, indicating that the sterile individuals mate satisfactorily with the wild populations from the 6 states. The male relative performance index (MRPI) showed that the sterile male is as effective in copulating as the wild males. The female relative performance index (FRPI) reflected a general tendency for wild females to copulate in greater proportion than the sterile females, except for the strains from Tamaulipas and Chiapas. In general, the lower participation of the sterile females in copulation increases the possibilities of sterile males to mate with wild females. The relative sterility index (RSI) showed that the acceptance by wild females of the sterile males (25-55%) was similar to that of wild males. Females of the Chiapas strain showed the lowest acceptance of sterile males. Finally, the results obtained in the Fried test (which measures induced sterility in eggs) showed a competitiveness coefficient ranging from 0.2 to 0.5. This suggests that sterile males successfully compete and are compatible with flies from different geographic origins. (author) [Spanish] La colonia actualmente usada para controlar la mosca mexicana de la fruta, Anastrepha ludens (Loew), en Mexico tiene mas de 10 anos en cria masiva. Los insectos esteriles son liberados en una gran variedad de condiciones ambientales como parte de un control integrado para suprimir diversas poblaciones de esta plaga dentro de la Republica Mexicana. El objetivo de este documento esta dirigido a revisar el desempeno de las moscas esteriles frente a poblaciones silvestres procedentes de diferentes ambientes y para esto se realizaron comparaciones de compatibilidad y competitividad sexual de las moscas esteriles contra poblaciones silvestres de seis estados representativos de la Republica Mexicana: Nuevo Leon, Tamaulipas, Sinaloa, Nayarit, Michoacan y Chiapas. Los resultados obtenidos manifiestan diferencias en el horario de inicio de llamado y mayor actividad sexual del macho entre las moscas provenientes de cada estado. Sin embargo el indice de aislamiento (ISI) reflejo compatibilidad sexual entre la cepa de laboratorio y todas las poblaciones analizadas, indicando que los individuos esteriles pueden aparearse satisfactoriamente con las poblaciones silvestres de los seis estados. El indice de efectividad de apareamiento del macho (MRPI) reflejo de manera global que los machos esteriles son tan efectivos para copular como los silvestres. El indice de efectividad de apareamiento de la hembra (FRPI) reflejo que en la mayoria de los estados las hembras silvestres copularon en mayor proporcion que las hembras esteriles, excepto para las poblaciones de Tamaulipas y Chiapas. En general, la baja participacion de las hembras esteriles en el campo permitio al macho esteril ampliar su probabilidad de apareamiento con las hembras silvestres. En cuanto al indice de esterilidad relativa (RSI), observamos que la aceptacion de las hembras silvestres al macho esteril (25-55%) fue similar a la de los machos silvestres. Las hembras de la poblacion de Chiapas registro la menor aceptacion. Finalmente, los resultados obtenidos en la prueba de Fried, la cual determi

Orozco-Davila, D.; Hernandez, R.; Meza, S.; Dominguez, J. [Programa Moscamed Moscafrut-Desarrollo de Metodos, Central Poniente No. 14 altos-Esq. 2a Avenida Sur. CP 30700 Tapachula, Chiapas (Mexico)

2007-03-15

360

Religiosidade, juventude e sexualidade: entre a autonomia e a rigidez1  

PubMed Central

Esse artigo descreve como jovens religiosos e autoridades religiosas de sua comunidade compreendem a sexualidade, considerando suas experiências pessoais e como membros de comunidades religiosas. A análise pretende contribuir para que políticas públicas dedicadas à promoção da saúde sexual da juventude considerem a religiosidade, no contexto de um estado laico e da promoção do direito à prevenção. Foram realizadas 26 entrevistas abertas e semidirigidas em diferentes comunidades da região metropolitana da cidade de São Paulo (comunidades católicas, da umbanda, do candomblé e de diferentes denominações evangélicas) sobre iniciação sexual, casamento, gravidez, contracepção e prevenção das DST/Aids, homossexualidade, aborto e direitos humanos. Observou-se como jovens e autoridades religiosas convivem com a tensão entre tradição e modernidade e os distintos discursos sobre a sexualidade. Como sujeitos religiosos (do discurso religioso) e sujeitos sexuais (de discursos sobre sexualidade), devem ser incorporados pelos programas como sujeitos de direito nos termos de sua religiosidade.

Silva, Cristiane Goncalves da; Santos, Alessandro Oliveira; Licciardi, Daniele Carli; Paiva, Vera; Parker, Richard

2009-01-01

361

Energy Savers: Tips for Saving Energy and Money at Home; El Ahorro de Energa: Sugerencias para ahorrar energa y dinero en el hogar  

SciTech Connect

The Department of Energy of the United States of America works to guarantee provisions of safe energy, reliable and economically accessible to support to one developing economy and to protect the atmosphere. These suggestions and ideas to increase the energy efficiency in their house represent simple ways in which our citizens can contribute to preserve the atmosphere at world-wide level, to reduce the level of contamination of the air and to reserve our natural resources for future generations. [Spanish] El Departamento de Energa de los Estados Unidos de America trabaja para garantizar suministros de energa seguros, confiables y econmicamente accesibles para apoyar a una economa en desarrollo y proteger el medio ambiente. Estas sugerencias e ideas para aumentar la eficiencia energetica en su casa representan maneras sencillas en que nuestros ciudadanos pueden contribuir a preservar el medio ambiente a nivel mundial, a reducir el nivel de contaminacin del aire y a reservar nuestros recursos naturales para las generaciones futuras.

Jones, J.

2000-06-01

362

La historia orbital de Deimos y la oblicuidad de Marte  

NASA Astrophysics Data System (ADS)

Recientemente, se ha demostrado mediante extensas integraciones numéricas, que la rotación de Marte pasó repetidamente por estados caóticos de movimiento, debido al pasaje por zonas de resonancia spin - órbita. En dichas circunstancias, la oblicuidad marciana pudo haber sufrido grandes excursiones de varias decenas de grados. Las consecuencias de dichas variaciones son de extrema importancia en el contexto de la búsqueda de manifestaciones de vida fósil en dicho planeta. El estudio de la dinámica orbital del satélite más exterior de Marte, Deimos, nos ha permitido comprobar, en el marco de las distintas teorías sobre su orígen, que la oblicuidad de Marte dificilmente pudo haber sufrido variaciones que la aparten más de 10o respecto de actual valor. Este resultado parece ser mucho más robusto que las simulaciones numéricas de Touma y Wisdom asi como las de Laskar y Robutel, lo que permite poner cotas más severas a la evolución paleoclimática de Marte.

Brunini, A.; Yokoyama, T.

363

Establishment of radiation qualities for mammography according to the IEC 61267 and TRS 457.  

PubMed

This article presents the technical conditions necessary to establish appropriate radiation qualities for the calibration of the dosemeters used in the mammography detectors in the Laboratório de Ciências Radiológicas (LCR) from the Universidade do Estado do Rio de Janeiro. Tests were conducted to evaluate the homogeneity of the radiation field, scattering, half-value layers and system stability. The calibration method (substitution) is described in this work. A moderate alteration in filtration makes it possible to maintain the half-value layers within the limits recommended. The results indicate the adequacy of the LCR laboratory for the calibration of the dosemeters in the radiation qualities for mammography with an expanded uncertainty in the best measurement capability of ± 1.8 % (k = 2). PMID:21062803

Pires, Evandro J; David, Mariano G; Peixoto, J Guilherme; Dealmeida, Carlos E

2010-11-09

364

Análise dos Conceitos Astronômicos Apresentados por Professores de Algumas Escolas Estaduais Brasileiras  

NASA Astrophysics Data System (ADS)

A razão para o desenvolvimento deste trabalho baseia-se no fato de que muitos professores da Educação Básica (EB) não lidam com conceitos relacionados à astronomia, e quando o fazem eles simplesmente seguem livros didáticos que podem conter erros conceituais. Como é de conhecimento geral a astronomia é um dos conteúdos a serem ensinados na EB fazendo parte dos Parâmetros Curriculares Nacionais e das Propostas Curriculares do Estado de São Paulo, mas é um fato, que vários pesquisadores apontam, a existência de muitos problemas no ensino da astronomia. Com o propósito de minimizar algumas dessas deficiências foi realizado um trabalho de pesquisa com a utilização de questionários pré e pós pesquisa, para tanto foi desenvolvido um Curso de Extensão Universitária para professores da Diretoria de Ensino Regional (DE) que abrange Mauá, Ribeirão Pires e Rio Grande da Serra (no Estado de São Paulo) com os seguintes objetivos: levantar concepções alternativas; subsidiar os professores por meio de palestras, debates e workshops, e verificar o sucesso da aprendizagem após o curso, adotando-se como referência, para a análise dos resultados, os dicionários de Língua Portuguesa (FERREIRA, 2004) e Enciclopédico de Astronomia e Astronáutica (MOUR?O, 1995). Portanto, dezesseis questões foram aplicadas antes e após o curso, assim pode-se verificar após a pesquisa que 100,0% dos professores sabiam os nomes das fases da Lua, 97,0% entenderam que o Sistema Solar é composto por oito planetas, 78,1% foram capazes de explicar como ocorre um eclipse lunar, um eclipse solar e um solstício, 72,7% sabiam como explicar a ocorrência das estações do ano; 64,5% explicaram corretamente a ocorrência do equinócio, 89,7% foram capazes de definir adequadamente o termo cometa; 63,6% definiram asteróide, 54,5% meteoro, 58,1% galáxia, e 42,4% planeta. Os resultados obtidos indicam uma aprendizagem significativa por parte dos participantes.

Voelzke, Marcos Rincon; Gonzaga, Edson Pereira

2011-12-01

365

Cálculos ab initio con correlación electrónica  

NASA Astrophysics Data System (ADS)

Estamos entrando en una era donde la ortogonalidad entre las investigaciones de carácter experimental y de naturaleza teórica se irá difuminando progresivamente y la problemática a resolver quedará en escena como el único actor principal de la obra. Como premisa para una cooperación teórico-experimental de igual a igual, la metodología químico-cuántica utilizada debe ser capaz de ofrecer resultados de carácter predictivo. Sin duda, esta madurez en la metodología químico-cuántica ya la hemos alcanzado hace algunos años, tal y como muestra entre otras muchas, la labor que nuestro grupo ha realizado en el transcurso de la última década, dentro del campo de la Espectroscopía Teórica. Los estudios realizados comprenden una amplia gama de sistemas, variando tanto en tamaño como en complejidad, abordando problemáticas espectroscópicas consideradas tradicionalmente como especialmente controvertidas. Nuestra contribución científica más relevante reside en el carácter cuantitativo de las asignaciones espectroscópicas que hemos propuesto en base a resultados ab initio. Recordemos que en los años noventa los resultados ab initio solían presentar para las energías de excitación de sistemas de tamaño molecular moderado, como el benceno, errores de más de 1 eV. En comparación con el éxito relativo de los métodos semiempíricos, la frustración de la metodología ab initio quedaba todavía más patente. Los estudios que hemos presentado representan una comprensión profunda de los espectros electrónicos en sistemas orgánicos claves, mostrando el camino a seguir para obtener asignaciones espectroscópicas precisas (entre 0.1-0.2 eV). La naturaleza del método CASPT2 junto al diseño de estrategias computacionales nos ha permitido alcanzar el carácter cuantitativo con el que se caracterizan nuestras contribuciones[1,2]. Por todo ello, algunos de los trabajos publicados se consideran clásicos dentro del campo, pues en cierto modo definen el campo, y se reflejan en libros publicados recientemente. En la conferencia se analizarán ciertos pormenores de las investigaciones realizadas. El tipo de aplicaciones llevadas a cabo hasta la fecha se ilustrará mediante el estudio teórico del espectro electrónico de ciclooctatetraeno. Dando un paso más en la evolución de nuestra investigación, pretendemos en la actualidad describir, desde un formalismo teórico y al mismo nivel de exigencia, los mecanismos subyacentes que tienen lugar en las reacciones biológicas fototoinducidas, es decir, reacciones que se inician mediante la absorción de luz[3]. Como muestra de la caracterización de los procesos fotofísicos y fotoquímicos en fotobiología teórica, hemos elegido la descripción de la conversión interna ultrarrápida que tiene lugar en los cromóforos del ADN. Los estados excitados de las moléculas de los ácidos nucleicos presentan tiempos de vida media que se encuentran en el rango de sub-picosegundos, sugiriendo la presencia de un canal ultrarrápido de conversión interna, lo que normalmente se asocia en la fotoquímica contemporánea a una intersección cónica entre el estado excitado y el fundamental[4]. De esta forma nuestro ADN previene de forma eficaz posibles reacciones en el estado excitado y se revela como un excelente protector solar.

Merchán Bonete, M.

366

Validation of the emission inventory in the Sao Paulo Metropolitan Area of Brazil, based on ambient concentrations ratios of CO, NMOG and NO x and on a photochemical model  

NASA Astrophysics Data System (ADS)

In recent years, photochemical air pollution has become a significant problem in the São Paulo Metropolitan Area (SPMA). For some air pollutants, especially ozone and particulate matter, concentrations in excess of national air quality standards have been registered. According to data published by the State Environmental Agency (CETESB), approximately 90% of ozone precursors are emitted into the atmosphere by the vehicle fleet [CETESB, 2000. Relatório de Qualidade do ar do Estado de Sao Paulo, 1999; CETESB, 2002. Relatório de Qualidade do ar do Estado de Sao Paulo, 2004]. The estimation of precursor emissions speciation is a rather complex task. Estimating spatial and temporal variation of vehicle emissions is the greatest source of uncertainty. As in other locales, data regarding motor vehicle emissions are scarce. Due to the considerable discrepancies in emission inventories reported in various regions of the world, we evaluated the official emission inventories of non-methane organic gas (NMOG) and nitrogen oxides (NO x) using an observation-based approach. Ratios of NO x/carbon monoxide (CO) and NMOG/CO were calculated from ambient measurements taken in the early morning (0700-0800) during July and August of 1999. This top-down approach assumes that early morning ambient concentrations of CO, NO x and NMOG are dominated by motor vehicle emissions, and that the photochemical process has not substantially affected the concentrations. Based on these ratios and on the assumption that official inventory of CO emissions is reasonably accurate, on-road motor vehicle emissions of NO x seem to be significantly overestimated and NMOG emissions slightly underestimated. An Eulerian photochemical model, using both the revised motor vehicle emission inventory and the original official emissions provided by CETESB, was applied to an episodic air pollution event in the SPMA (9-12 August 1999). Meteorology fields were obtained from the CALMET model. When the revised, rather than the official, emission inventories are used, ozone and NO concentrations predicted by the California Institute of Technology (CIT) airshed model more closely match observed values.

Vivanco, Marta G.; Andrade, Maria de Fátima

367

Predicting the ocurrence probability of freak waves baed on buoy data and non-stationary extreme value models  

NASA Astrophysics Data System (ADS)

In the last decades, freak or rogue waves have become an important topic in engineering and science. Forecasting the occurrence probability of freak waves is a challenge for oceanographers, engineers, physicists and statisticians. There are several mechanisms responsible for the formation of freak waves, and different theoretical formulations (primarily based on numerical models with simplifying assumption) have been proposed to predict the occurrence probability of freak wave in a sea state as a function of N (number of individual waves) and kurtosis (k). On the other hand, different attempts to parameterize k as a function of spectral parameters such as the Benjamin-Feir Index (BFI) and the directional spreading (Mori et al., 2011) have been proposed. The objective of this work is twofold: (1) develop a statistical model to describe the uncertainty of maxima individual wave height, Hmax, considering N and k as covariates; (2) obtain a predictive formulation to estimate k as a function of aggregated sea state spectral parameters. For both purposes, we use free surface measurements (more than 300,000 20-minutes sea states) from the Spanish deep water buoy network (Puertos del Estado, Spanish Ministry of Public Works). Non-stationary extreme value models are nowadays widely used to analyze the time-dependent or directional-dependent behavior of extreme values of geophysical variables such as significant wave height (Izaguirre et al., 2010). In this work, a Generalized Extreme Value (GEV) statistical model for the dimensionless maximum wave height (x=Hmax/Hs) in every sea state is used to assess the probability of freak waves. We allow the location, scale and shape parameters of the GEV distribution to vary as a function of k and N. The kurtosis-dependency is parameterized using third-order polynomials and the model is fitted using standard log-likelihood theory, obtaining a very good behavior to predict the occurrence probability of freak waves (x>2). Regarding the second objective of this work, we apply different algorithms using three spectral parameters (wave steepness, directional dispersion, frequential dispersion) as predictors, to estimate the probability density function of the kurtosis for a given sea state. ACKNOWLEDGMENTS The authors thank to Puertos del Estado (Spanish Ministry of Public Works) for providing the free surface measurement database.

Tomas, A.; Menendez, M.; Mendez, F. J.; Coco, G.; Losada, I. J.

2012-04-01

368

Genetic variation in Bactericera cockerelli (Hemiptera: Triozidae) from Mexico.  

PubMed

Bactericera cockerelli (Sulc) is a significant pest of several solanacious crops in Mexico and the United States since 1970. In 2001 significant outbreaks of outstanding importance were observed for the first time in areas where infestations of this insect were historically rare. Molecular studies revealed that this was because of the development of a new biotype of B. cockerelli that had become adapted to south-western United States, further demonstrating that this genetic differentiation was reflected in the survival, development cycle, fertility, and growth rate of both the native biotype as well as the one recently reported. To determine genetic variation in populations of B. cockerelli from Mexico, inter simple sequence repeat were used. Results showed that populations of B. cockerelli from central and northeastern Mexico (Guanajuato, Morelos, Estado de Mexico, and Nuevo Leon states) are genetically similar, meanwhile B. cockerelli from northwest, southwest, and southeast of the country (Sinaloa, Michoacan, and Oaxaca states) are genetically distinct from each other and from the rest of the populations included in the study. PMID:23786093

Lopez, Beatriz; Favela, Susana; Ponce, Gustavo; Foroughbakhch, Rahim; Flores, Adriana E

2013-04-01

369

VIII Olimpíada Brasileira de Astronomia e Astronáutica  

NASA Astrophysics Data System (ADS)

Neste trabalho apresentamos as motivações pelas quais organizamos, em conjunto, pela primeira vez, a Olimpíada Brasileira de Astronomia incluindo a Astronáutica, em colaboração com a Agência Espacial Brasileira. Esta ampliação contribuiu para atrair ainda mais alunos, professores, escolas e patrocinadores para participarem desta Olimpíada. Em 2005 participaram da VIII Olimpíada Brasileira de Astronomia e Astronáutica (VIII OBA) 187.726 alunos distribuídos por 3.229 escolas, pertencentes a todos os estados brasileiros, incluindo o Distrito Federal. O crescimento em número de alunos participantes foi 52,4% maior do que em 2004. Em abril de 2005 organizamos, em Itapecerica da Serra, SP, um curso para os 50 alunos previamente selecionados e participantes da VII OBA e ao final selecionamos, dentre eles, uma equipe de 5 alunos, os quais representaram o Brasil na X Olimpíada Internacional de Astronomia, na China, em outubro de 2005. Ganhamos, pela primeira vez, uma medalha de ouro naquele evento. Em Agosto de 2005, organizamos a VIII Escola de Agosto para 50 alunos e respectivos professores, em Águas de Lindóia, SP, juntamente com a XXXI reunião anual da Sociedade Astronômica Brasileira (SAB). Em novembro de 2005 realizamos a I Jornada Espacial, em São José dos Campos, com 22 alunos e 22 professores selecionados dentre os participantes que melhores resultados obtiveram nas questões de Astronáutica da VIII OBA. Neste trabalho detalhamos os resultados da VIII OBA bem como as ações subseqüentes.

Garcia Canalle, João Batista; Villas da Rocha, Jaime Fernando; Wuensche de Souza, Carlos Alexandre; Pereira Ortiz, Roberto; Aguilera, Nuricel Villalonga; Padilha, Maria De Fátima Catta Preta; Pessoa Filho, José Bezerra; Soares Rodrigues, Ivette Maria

2007-07-01

370

Estudio multiespectral del remanente de supernova W 28  

NASA Astrophysics Data System (ADS)

Se presentan observaciones en continuo de radio con muy alta resolución angular y sensibilidad del remanente de supernova (RSN) W28. Las observaciones fueron realizadas con el interferómetro Very Large Array (Estados Unidos), en las configuraciones C y D, en 1415 y 324 MHz. Por la gran extensión de este remanente (diámetro ~ 1o), las observaciones en 1415 MHz se realizaron en modo mosaico, combinando 48 apuntamientos diferentes en una única imagen. En ambas frecuencias los datos se procesaron con el agregado de observaciones de menor resolución angular, a fin de recuperar información en todas las frecuencias espaciales y obtener estimaciones precisas de densidad de flujo. Las imágenes resultantes muestran por primera vez la presencia de extensiones con forma de arco, cuya naturaleza se investiga. Las observaciones en radio se comparan con una imagen óptica de W28, y con la emisión en rayos X, observada con el satélite ROSAT. Este remanente muestra una clara morfología híbrida, tipo cáscara en frecuencias de radio y de centro lleno en las bandas óptica y de rayos X blandos.

Dubner, G.; Velázquez, P.; Castelletti, G.

371

[Barriers and Facilitators in the Recruitment and Retention of Heterosexual Couples for Preventive Interventions.  

PubMed

El Reclutamiento y la Retención (R&R) de participantes es fundamental para el éxito de estudios y para el desarrollo de intervenciones preventivas. El R&R de participantes determina la validez y efectividad de estos programas. En este trabajo examinamos algunos de los factores que facilitan y dificultan el R&R en los proyectos preventivos y ofrecemos algunas alternativas para mejorar los índices de R&R. Realizamos dos estudios, en el primero administramos el Instrumento de Informatión, Motivatión y Conductas-Español (IIMC-E) a un grupo de 26 parejas heterosexuales (52 participantes). En el segundo, entrevistamos a 5 parejas VIH discordantes (10 participantes). Encontramos que el 75% de los/las participantes indicó que su trabajo era una de las principales barreras que dificultan la asistencia a las actividades. Otras barreras son las responsabilidades laborales y familiares. Encontramos que la principal barrera fue el miedo a la revelación del estado serlógico. Los principales facilitadores del R&R son la coordinación adecuada y el seguimiento telefónico ofrecido por parte del personal del proyecto. Concluimos que en el desarrollo e implantación de programas de prevención el investigador/a debe tomar en cuenta la adaptación de aspectos logísticos como la disponibilidad y las necesidades particulares de los/las participantes. PMID:23264700

Hernández-Hernández, Alberto L; Perez-Jimenez, David

2010-01-01

372

Vínculos sobre um modelo de quartessência de Chaplygin usando observações do satélite chandra da fração de massa de gás em aglomerados de galáxias  

NASA Astrophysics Data System (ADS)

Observações de Supernovas do tipo Ia mostram que a expansão do Universo está acelerando. Segundo as equações de Einstein uma componente com pressão negativa (energia escura) é necessária para explicar a aceleração cósmica. Além da energia escura é usualmente admitido que no Universo há também uma matéria exótica com pressão zero, que é chamada de matéria escura. Essa componente possui um papel fundamental na formação de estruturas no Universo. Recentemente tem se explorado a possibilidade de que matéria e energia escura poderiam ser unificadas através de uma única componente, que tem sido denominada de quartessência. Um exemplo de fluido com essas características é o Gás de Chaplygin Generalizado, que possui uma equação de estado da forma p = -A/ra. Inicialmente consideramos o caso especial a = 1 (gás de Chaplygin) e vinculamos parâmetros do modelo utilizando observações em raios-X do satélite Chandra da fração de massa de gás em aglomerados de galáxias. Uma comparação dos vínculos obtidos com esse teste com outros testes, tais como supernovas e idade do Universo, mostra que esse teste é bastante restritivo. Exibiremos ainda resultados para o caso em que a curvatura é nula e o parâmetro a está compreendido no intervalo -1 < a 1.

de Souza, R. S.

2003-08-01

373

Improvement of a popcorn population using selection indexes from a fourth cycle of recurrent selection program carried out in two different environments.  

PubMed

We estimated genetic gains for popcorn varieties using selection indexes in a fourth cycle of intrapopulation recurrent selection developed in the campus of the Universidade Estadual do Norte Fluminense. Two hundred full-sib families were obtained from the popcorn population UNB-2U of the third recurrent selection cycle. The progenies were evaluated in a randomized block design with two replications at sites in two different environments: the Colégio Estadual Agrícola Antônio Sarlo, in Campos dos Goytacazes, and the Empresa de Pesquisa Agropecuária do Estado do Rio de Janeiro (PESAGRO-RIO), in Itaocara, both in the State of Rio de Janeiro. There were significant differences between families within sets in all traits, indicating genetic variability that could be exploited in future cycles. Thirty full-sib families were selected to continue the program. The selection indexes used to predict the gains were those of Mulamba and Mock, Smith and Hazel. The best results were obtained with the Mulamba and Mock index, which allowed the prediction of negative gains for the traits number of diseased ears and ears attacked by pests, number of broken plants and lodging, as well as ears with poor husk cover. It also provided higher gains for popping expansion and grain yield than with the other indexes, giving values of 10.55 and 8.50%, respectively, based on tentatively assigned random weights. PMID:20309820

Amaral Júnior, A T; Freitas Júnior, S P; Rangel, R M; Pena, G F; Ribeiro, R M; Morais, R C; Schuelter, A R

2010-03-02

374

[Treatment of osteosarcoma in children with pre- and postoperative chemotherapy and block resection of the tumor].  

PubMed

The authors describe the results of five pediatric patients with nonmetastatic osteosarcoma of an extremity, admitted from 1987 to 1989 to the Hospital Infantil del Estado de Sonora. Four patients presented with their primary tumor located at the distal end of the femur, whereas one had a primary lesion of the humerus. All of them received preoperative chemotherapy consisted of two cycles of cisplatin and adriamycin. One of the patients presented immediate complications after first cicle and died due to overwhelming sepsis by Candida albicans. Surgery was an amputation in one patients and block ressection in three cases. Necrosis was good in three cases, fair in one. Postoperative chemotherapy consisted of bleomycin, cyclophosphamide and dactinomycin every four weeks alternated with cisplatin plus adriamycin. One of the three patients, in which block ressection was made, had a local recurrence 12 months after diagnosis, without metastasis. He underwent desarticulation and died four months later of leukoencephalopathy and no tumor was found on necropsy. Three patients have remained continuously free of disease with follow up of 20, 26 and 31 months after diagnosis and are out of chemotherapy since 5, 12 and 17 months, respectively. In two of them the affected extremity still is safe. PMID:2064745

Covarrubias-Espinoza, G; Goiricelaya-Asia, J M; Vásquez-Bojórquez, R; López-Cervantes, G

1991-03-01

375

A participatory approach to integrated aquifer management: The case of Guanajuato State, Mexico  

NASA Astrophysics Data System (ADS)

Guanajuato State, located in central Mexico, with less than 2% of the country's area, has almost 17,000 deep water wells, from which nearly 4,000 cubic hectometers (hm3) per year are being extracted, more than 1,000 hm3 over the estimated renewable yield. Since, in Mexico, water is administered under federal jurisdiction by the National Water Commission (CNA, for its Spanish acronym), the state government faces the challenge of ensuring its population's economic development without formal means of intervention. Being thus limited to apply mandatory policies and measures, the state water program has focused on the implementation of a two-sided strategy. First, basic hydrogeological studies and mathematical groundwater hydrodynamic models were developed upon a comprehensive survey of existing wells and a general revision of the state's geological framework. Second, a structure for water user's participation in water management actions was promoted (from the dissemination of information to the implementation of pilot efficient water use projects) with financial, technical and political support from the state. Simultaneously, a coordinated effort towards the completion of the water user's registry was performed with the federal authority along with other supporting measures such as training and monitoring programs. In this paper, a general overview of the project's achievements and challenges is presented. L'État de Guanajuato, situé dans la partie centrale du Mexique, avec moins de 2% de la surface du pays, a près de 17 000 puits profonds, d'où sont extraits près de 4 000 hm3 par an, soit plus de 1 000 hm3 de plus que le débit renouvelable estimé. Comme au Mexique l'eau est administrée dans le cadre d'une juridiction fédérale, le gouvernement de l'État fait tout son possible pour assurer le développement de sa population sans moyens formels d'intervention. Étant ainsi limité à appliquer des politiques et des mesures de recommandations, le programme Eau de l'État s'est appliqué à développer une stratégie sur deux plans. Tout d'abord, des études hydrogéologiques de base et des modèles mathématiques d'écoulement et de transport de nappe ont été réalisés à partir d'un suivi d'ensemble des puits existants et d'une révision générale du contexte géologique de l'État. Ensuite, on a soutenu une structure de participation des usagers de l'eau aux actions de gestion de l'eau, à partir de la dissémination de l'information pour la mise en place de projets pilotes efficaces d'utilisation de l'eau, avec des aides financières, techniques et politiques de l'État. Simultanément, un effort coordonné en vue de l'achèvement de l'enregistrement des usagers de l'eau a été fait avec l'autorité fédérale, en même temps que d'autres mesures de soutien, telles que des programmes de formation et des campagnes de surveillance. Cet article présente une vue d'ensemble des réalisations de projets et des défis. Resumen El Estado de Guanajuato, situado en el centro de México, ocupa menos del 2% de la superficie del país. Tiene casi 17.000 pozos profundos, de los cuales se extrae cerca de 4.000 hm3/a, lo que supone un exceso de 1.000 hm3/a respecto a la recarga anual. Puesto que el agua es administrada a nivel federal en México, el gobierno del Estado afronta el reto de asegurar el desarrollo de la población sin disponer de medios formales de intervención. Dadas las limitaciones para aplicar políticas y medidas reguladoras, el programa del agua en el Estado tiene como objetivo principal la implantación de una doble estrategia. Por un lado, desarrollar estudios hidrogeológicos básicos y modelos matemáticos de flujo y transporte de los acuíferos, basándose en una campaña exhaustiva de pozos existentes y en una revisión del marco geológico del Estado. Por otro lado, promover-con soporte financiero, técnico y político-una estructura de participación de los usuarios en las acciones de gestión, incluyendo desde la difusión de la información hasta la implantación de proyectos piloto para un uso

Sandoval, Ricardo

376

Screening for marijuana and cocaine abuse by immunoanalysis and gas chromatography.  

PubMed

Drug abuse among college students is characterized by lower academic performance and long-term negative consequences. Screening to detect students at high risk of consuming drugs is of primary importance to insure early identification and appropriate levels of care. As a result, this study aimed to determine the current or past use of drug abuse through a questionnaire applied to a student population at the Universidad Autónoma del Estado de Morelos. The results were confirmed by immunoanalysis and gas chromatography of urine. We interviewed 181 students aged 15 to 21 (gender was not considered in this study), and urine samples were collected for analytical analysis. For detection of metabolites Delta9-THCA-A and benzoylecgonine from marijuana and cocaine, respectively, a homogenous enzymatic inmmunoanalysis was used; subsequent samples were analyzed by a mass spectrometer with quadrupole detector. Seven samples of the total (181) did not completely fit the inclusion criteria and were eliminated. The results showed 0.50% and 1.16% positive samples for benzoylecgonine and Delta9-THCA-A, respectively. These results are not different from those of the National Questionnaire on Addiction. We can establish a program for detecting drug consumption in our students. This kind of study is important in order to implement programs that can help us to decrease the abuse of drugs in our college population. PMID:18991889

Garcia-Jimenez, Sara; Heredia-Lezama, Karina; Bilbao-Marcos, Fernando; Fuentes-Lara, Griselda; Monroy-Noyola, Antonio; Deciga-Campos, Myrna

2008-10-01

377

The use of polliniferous resources by Melipona capixaba, an endangered stingless bee species.  

PubMed

Abstract Pollen types present in samples from corbiculae of Melipona capixaba (Moure and Camargo) (Hymenoptera: Apidae: Meliponina) worker bees were analyzed, as well as pollen samples from food pots inside the hives in three sites located at the bees' original habitat. The aim was to find out the sources used as a trophic resource by this species. The dominant pollen grains in the spectrum of the samples belonged to the families Myrtaceae and Melastomataceae. Eucalyptus was the most frequent pollen type in the corbiculae in Conceição do Castelo municipality; Eucalyptus, Myrcia, and Melastomatacea/Combretaceae in the Fazenda do Estado district; and Eucalyptus and Myrcia in the São Paulo de Aracê district, both in the Domingos Martins municipality. Eucalyptus and Melastomataceae/Combretaceae were the predominant pollen types in the food pots. Eucalyptus was the most prevalent type all year round or most of the year. The most common pollen types in the months that Eucalyptus was not present or dominant in the samples were of remaining native forest species, "ruderal" (field) plants, fruit-bearing plants, and introduced ornamental plants. PMID:23464528

Serra, Bruna Danielle Vieira; da Luz, Cynthia Fernandes Pinto; Campos, Lucio Antonio de Oliveira

2012-01-01

378

Simulações Numéricas de Rotação Nuclear Cometária  

NASA Astrophysics Data System (ADS)

Este trabalho apresenta os resultados iniciais de simulações numéricas da evolução rotacional, de um núcleo cometário não esférico, ao longo de uma passagem periélica, levando-se em conta os torques devido a existência dos jatos de poeira e de gás. Inicialmente os autores apresentam um modelo simples (primeira aproximação), com somente um único jato na extremidade do semi-eixo maior, para compreender a variação positiva ou negativa que estas forças não gravitacionais exercem sobre o período de rotação cometário. Posteriormente incrementa-se o número de jatos, os quais são distribuídos ao longo da superfície cometária, para observar-se a contribuição dos efeitos provenientes dos torques originários da liberação da poeira e gás cometários, que provavelmente violará a suposição da livre precessão. Os estados rotacionais, sob torques induzidos devido à sublimação, dependem fortemente da localização das áreas ativas do núcleo. Os cometas P/Schwassmann-Wachmann 1, P/Tempel 2, P/Forbes e C/Meunier-Dupouy serão observados fotometricamente, pelos autores, no Laboratório Nacional de Astrofísica (LNA) ao longo de algumas noites consecutivas em abril, junho e julho de 1999. Estas observações serão comparadas com as simulações numéricas de rotação cometária.

Voelzke, M. R.; Winter, O. C.

1999-08-01

379

[The arrival of the plague in São Paulo in 1899].  

PubMed

In October 1899, the bubonic plague arrived in Brazil through the port of Santos. A city of intensive port activity, Santos was the gateway for a plague epidemic that devastated several cities in Brazil in the early 20th century and prompted joint action by several states to fight it. More importantly, given the difficulties and delays in importing anti-plague serum from Europe, it led to the creation of the Butantan Institute in Sao Paulo (in 1899) and the Municipal Serotherapeutic Institute in Rio de Janeiro (in 1900), which developed and standardized anti-plague serum and vaccines according to the particular conditions of the country. Until then, public health efforts had been isolated and had not reached the whole country. Oswaldo Cruz, newly arrived after three years of specialization at the Pasteur Institute in Paris, worked with scientists Adolfo Lutz and Vital Brazil on identifying the plague in Santos. This article analyzes the arrival of the bubonic plague epidemic in the state of Sao Paulo and the public health measures taken to combat the disease and provide patient care in the early part of the 20th century. The primary sources for this analysis were the São Paulo newspapers, especially O Estado de Sao Paulo, and reports from the Ministry of Justice and the President of the State of Sao Paulo. PMID:21936225

do Nascimento, Dilene Raimundo

2011-01-01

380

Science and technology disclosure in the state of Queretaro: Science and Technology for Children program  

NASA Astrophysics Data System (ADS)

Science and technology disclosure is an integral part of our scientific work as researches; it is an induction process for children, young people and teachers of primary and secondary schools in the state of Queretaro. Education must be offered in a clear and objective way, it allows to the students apply the acquired knowledge to understand the world and improve his quality of life. Nowadays, the Centro de Investigacion en Ciencia Aplicada y Tecnologia Avanzada of the Instituto Politecnico Nacional Unidad Queretaro (CICATA-IPN Queretaro) together with the Consejo de Ciencia y Tecnologia del Estado de Queretaro (CONCYTEQ) have implemented the "Science and Technology for Children" program (Ciencia y Tecnologia para Ninos - CTN), it allows to the educative sector obtain information through the CONCYTEQ web page. The fist stage of the program was the development of two subjects: the brochure titled "Petroleum, Nonrenewable Natural Resource that Moves the World" and the manual "Experiments of Physics". At the moment we are working with the second stage of the program, it is about the energy generation using renewable sources such as: geothermal, aeolian, solar and biomass. The CTN program allows to students and teachers to create conscience about the importance of the development of the science of technology in our country.

Contreras Flores, Rubén; Villeda Muñoz, Gabriel

2007-06-01

381

The Use of Polliniferous Resources by Melipona capixaba, an Endangered Stingless Bee Species  

PubMed Central

Pollen types present in samples from corbiculae of Melipona capixaba (Moure and Camargo) (Hymenoptera: Apidae: Meliponina) worker bees were analyzed, as well as pollen samples from food pots inside the hives in three sites located at the bees’ original habitat. The aim was to find out the sources used as a trophic resource by this species. The dominant pollen grains in the spectrum of the samples belonged to the families Myrtaceae and Melastomataceae. Eucalyptus was the most frequent pollen type in the corbiculae in Conceição do Castelo municipality; Eucalyptus, Myrcia, and Melastomatacea/Combretaceae in the Fazenda do Estado district; and Eucalyptus and Myrcia in the São Paulo de Aracê district, both in the Domingos Martins municipality. Eucalyptus and Melastomataceae/Combretaceae were the predominant pollen types in the food pots. Eucalyptus was the most prevalent type all year round or most of the year. The most common pollen types in the months that Eucalyptus was not present or dominant in the samples were of remaining native forest species, “ruderal” (field) plants, fruit-bearing plants, and introduced ornamental plants.

Serra, Bruna Danielle Vieira; da Luz, Cynthia Fernandes Pinto; Campos, Lucio Antonio de Oliveira

2012-01-01

382

Diversity of mtDNA in Southern River Otter (Lontra provocax) from Argentinean Patagonia.  

PubMed

Lontra provocax is an endemic species from Patagonia that has been categorized as "endangered" by the International Union for Conservation of Nature. In this study, noninvasive molecular methods were used to investigate the genetic diversity and haplotype distribution of L. provocax in Argentinean Patagonia. We analyzed 150 scat samples collected from 1995 to 2006 and obtained 13 sequences of control region with 1 haplotype and 34 sequences of cytochrome b with 4 haplotypes. The population of the south of Patagonia (Tierra del Fuego and De los Estados Island) showed a relatively high haplotype diversity (h = 0.71) and was statistically different to the population of the north (analysis of molecular variance, F(ST) = 0.15, P = 0.018). We concluded that there are 2 different subpopulations of L. provocax that deserve conservation attention and that the southern population appears not to have suffered a human-induced population bottleneck of the sort typically experienced by various otter species around the world. PMID:18310615

Centrón, Daniela; Ramirez, Benjamín; Fasola, Laura; Macdonald, David W; Chehébar, Claudio; Schiavini, Adrián; Cassini, Marcelo H

2008-02-29

383

Esquizofrenia y trastorno en el consumo de sustancias: prevalencia y character?sticas sociodemogr?ficas en la poblaci?n Latina  

PubMed Central

El interés por comprender la co-morbilidad de la esquizofrenia y el trastorno en el uso de sustancias, ha aumentado debido al incremento de este diagnóstico, a los efectos negativos observados en el sujeto y a los costos en los servicios de salud. Este trastorno dual puede tener efectos dramáticos en el curso clínico del trastorno psicótico tales como: mayores recaídas, re-hospitalizaciones, síntomas más severos, no adherencia al tratamiento antipsicótico, cambios marcados del humor, aumento en el grado de hostilidad e ideación suicida, así como alteraciones en otras áreas del funcionamiento incluyendo violencia, victimización, indigencia y problemas legales. La literatura proveniente en particular de Estados Unidos y Europa sugiere que el rango de prevalencia para este diagnóstico puede oscilar entre el 10% hasta el 70%. En este estudio, revisamos la prevalencia del diagnóstico dual de esquizofrenia y trastorno en el uso sustancias, así como sus características sociodemográficas, con base en la literatura disponible alrededor del mundo dando énfasis en la poblacion latina. A pesar de que este diagnóstico es ampliamente aceptado, se conoce poco sobre su prevalencia en la población latina, sobre los factores ambientales, demográficos, clínicos y otras características de estos individuos. Un mejor conocimiento sobre este diagnóstico permitiría mejorar los métodos para la detección y adecuada valoración del trastorno en el uso de sustancias en personas con trastornos metales severos como la esquizofrenia.

Jimenez-Castro, Lorena; Raventos-Vorst, Henriette; Escamilla, Michael

2012-01-01

384

Inverse problem in hydrogeology  

NASA Astrophysics Data System (ADS)

The state of the groundwater inverse problem is synthesized. Emphasis is placed on aquifer characterization, where modelers have to deal with conceptual model uncertainty (notably spatial and temporal variability), scale dependence, many types of unknown parameters (transmissivity, recharge, boundary conditions, etc.), nonlinearity, and often low sensitivity of state variables (typically heads and concentrations) to aquifer properties. Because of these difficulties, calibration cannot be separated from the modeling process, as it is sometimes done in other fields. Instead, it should be viewed as one step in the process of understanding aquifer behavior. In fact, it is shown that actual parameter estimation methods do not differ from each other in the essence, though they may differ in the computational details. It is argued that there is ample room for improvement in groundwater inversion: development of user-friendly codes, accommodation of variability through geostatistics, incorporation of geological information and different types of data (temperature, occurrence and concentration of isotopes, age, etc.), proper accounting of uncertainty, etc. Despite this, even with existing codes, automatic calibration facilitates enormously the task of modeling. Therefore, it is contended that its use should become standard practice. L'état du problème inverse des eaux souterraines est synthétisé. L'accent est placé sur la caractérisation de l'aquifère, où les modélisateurs doivent jouer avec l'incertitude des modèles conceptuels (notamment la variabilité spatiale et temporelle), les facteurs d'échelle, plusieurs inconnues sur différents paramètres (transmissivité, recharge, conditions aux limites, etc.), la non linéarité, et souvent la sensibilité de plusieurs variables d'état (charges hydrauliques, concentrations) des propriétés de l'aquifère. A cause de ces difficultés, le calibrage ne peut êtreséparé du processus de modélisation, comme c'est le cas dans d'autres cas de figure. Par ailleurs, il peut être vu comme une des étapes dans le processus de détermination du comportement de l'aquifère. Il est montré que les méthodes d'évaluation des paramètres actuels ne diffèrent pas si ce n'est dans les détails des calculs informatiques. Il est montré qu'il existe une large panoplie de techniques d'inversion : codes de calcul utilisables par tout-un-chacun, accommodation de la variabilité via la géostatistique, incorporation d'informations géologiques et de différents types de données (température, occurrence, concentration en isotopes, âge, etc.), détermination de l'incertitude. Vu ces développements, la calibration automatique facilite énormément la modélisation. Par ailleurs, il est souhaitable que son utilisation devienne une pratique standardisée. Se sintetiza el estado del problema inverso en aguas subterráneas. El énfasis se ubica en la caracterización de acuíferos, donde los modeladores tienen que enfrentar la incertidumbre del modelo conceptual (principalmente variabilidad temporal y espacial), dependencia de escala, muchos tipos de parámetros desconocidos (transmisividad, recarga, condiciones limitantes, etc), no linealidad, y frecuentemente baja sensibilidad de variables de estado (típicamente presiones y concentraciones) a las propiedades del acuífero. Debido a estas dificultades, no puede separarse la calibración de los procesos de modelado, como frecuentemente se hace en otros campos. En su lugar, debe de visualizarse como un paso en el proceso de enten dimiento del comportamiento del acuífero. En realidad, se muestra que los métodos reales de estimación de parámetros no difieren uno del otro en lo esencial, aunque sí pueden diferir en los detalles computacionales. Se discute que existe amplio espacio para la mejora del problema inverso en aguas subterráneas: desarrollo de códigos amigables alusuario, acomodamiento de variabilidad a través de geoestadística, incorporación de información geológica y diferentes tipos de datos (temperatura, presencia y co

Carrera, Jesús; Alcolea, Andrés; Medina, Agustín; Hidalgo, Juan; Slooten, Luit J.

2005-03-01

385

Moléculas orgánicas obtenidas en simulaciones experimentales del medio interestelar.  

NASA Astrophysics Data System (ADS)

Las nubes moleculares son regiones de formación de estrellas, con temperaturas cinéticas entre 10-50 K y densidades de 103-106 átomos cm-3. Su materia está formada por gas y polvo interestelar. Estas partículas de polvo están cubiertas por una fina capa de hielo, de unos 0.01 ?m, que contiene H2O y a menudo CO, CO2, CH3OH y NH3. El hielo es presumiblemente irradiado por fotones ultravioleta y rayos cósmicos en las zonas poco profundas de las nubes moleculares y las regiones circunestelares. En un sistema de vacío, P ˜ 10-7 mbar, simulamos la deposición de hielo a partir de 10 K y la irradiación ultravioleta por medio de una lámpara de descarga de hidrógeno activada con microondas. La evolución del hielo se observa por medio de un espectrómetro infrarrojo. De este modo es posible determinar la composición del hielo observado en el medio interestelar y predecir la presencia de moléculas aún no detectadas en el espacio, que han sido producto del procesamiento del hielo en nuestros experimentos. También es posible calentar el sistema hasta temperatura ambiente para sublimar el hielo depositado. Cuando el hielo ha sido previamente irradiado, se observa un residuo compuesto por moléculas orgánicas complejas, algunas prebióticas, como varios ácidos carboxílicos, aminas, amidas, ésteres y en menor proporción moléculas heterocíclicas y aminoácidos. Algunas de estas moléculas podrían detectarse en estado gaseoso por medio de observaciones milimétricas y de radio. También podrían estar presentes en el polvo cometario, cuyo análisis químico está planeado por las misiones Stardust y Rosetta. Mientras tanto, nuestro grupo está llevando a cabo el análisis de partículas de polvo interplanetario (IDPs), algunas de las cuales pueden ser de origen cometario. Al igual que ocurre con los productos obtenidos por irradiación del hielo en nuestros experimentos, algunas IDPs son ricas en material orgánico que contiene oxígeno.

Muñoz-Caro, Guillermo Manuel

386

 

PubMed

O método Grade of Membership (GoM) tem sido cada vez mais utilizado por demógrafos brasileiros e tem a vantagem de possuir um parâmetro que mensura a heterogeneidade individual, com base nas correlações não-observáveis entre as categorias de resposta das variáveis de interesse, gerando um medida do grau de pertencimento de cada indivíduo a perfis extremos. Alguns autores, contudo, chamam atenção para questões importantes na calibragem dos modelos finais que utilizam o programa GoM versão 3.4, como o problema de identificabilidade - soluções múltiplas para parâmetros estimados. Neste artigo, é sugerido um procedimento capaz de identificar um modelo final com solução única que descreva os tipos puros mais fidedignos à base de dados, em uma tentativa de otimização. Para ilustrar esse processo, utilizou-se uma base de dados correspondente a um levantamento econômico e sociodemográfico de uma população de pequenos agricultores residentes ao longo da Rodovia Transamazônica, no Estado do Pará. Também identificou-se a existência de instabilidade nos parâmetros estimados pelo programa GoM 3.4, sendo proposto um método de estabilização de seus valores. Com esses procedimentos combinados, os usuários do programa GoM 3.4 poderão descrever sua base de dados de forma mais adequada e responder às críticas sobre questões de identificabilidade e estabilidade dos modelos resultantes. Essas soluções empíricas são relevantes por afetarem cálculos de prevalência e de incidência de eventos de interesse, além de trazerem consequências importantes sobre o ponto e o momento corretos para intervenções de políticas públicas ou de planejamento prospectivo em análises de projeção. PMID:21709732

Guedes, Gilvan Ramalho; Caetano, André Junqueira; Machado, Carla Jorge; Brondízio, Eduardo Sonewend

2010-01-01

387

Detección y estudio mediante Fluorescencia Inducida por Láser de radicales libres formados por Disociación Multifotónica Infrarroja  

NASA Astrophysics Data System (ADS)

Una de las principales aplicaciones actuales de los procesos de disociación multifotónica inducidos por radiación láser infrarroja (DMI) es la producción de radiales libres, con el fin de estudiar sus propiedades cinéticas y espectroscópicas. La disociación de moléculas poliatómicas en el IR con láseres de CO2 tiene lugar desde la superficie de energía molecular mas baja y conduce generalmente a la formación de fragmentos en el estado electrónico fundamental, con diversos grados de excitación vibracional. En el Grupo de Procesos Multifotónicos del Instituto de Estructura de la Materia del C.S.I.C. hemos puesto a punto la técnica de Fluorescencia Inducida por Láser (LIF) para la detección y análisis en tiempo real de los fragmentos producidos en la DMI inducida mediante uno o dos campos láseres de diferentes longitudes de onda. Objetivos de nuestro trabajo han sido el estudio de los canales de disociación mayoritarios y de las especies transitoria producidas, así como de la distribución de energía interna con que éstas son generadas. En particular hemos detectado mediante LIF las especies: C2, CF, CH, SiH2, CF2, CH2, SiHCl, y CF3 a partir de la disociación de, entre otras, las siguientes moléculas: C2H3Br, C3F6, C4H8Si, C2H5ClSi y CH5ClSi. En este trabajo presentamos algunos de los resultados obtenidos mediante el estudio por LIF de estos radicales: estudio temporal de la señal LIF obtenida con determinación de tiempos de vida, espectros de excitación y fluorescencia, temperaturas vibracionales de formación, variación de la intensidad LIF con el tiempo de retraso entre los láseres de disociación y prueba, etc.

Santos, M.; Díaz, L.; Torresano, J. A.; Rubio, L.; Samoudi, B.

388

Grupos españoles de cálculos ab initio de moléculas de interés astrofísico  

NASA Astrophysics Data System (ADS)

Pocos campos de la química están tan bien adaptados a la modelización por medio de los métodos teóricos de la Química Cuántica como la Astroquímica y la Química de la Atmósfera, donde las interacciones moleculares son, generalmente, lo suficientemente pequeñas para que el modelo de molécula aislada funcione muy bien. En España son varios los grupos teóricos que dedican su esfuerzo de investigación, o parte de él, al estudio de moléculas o procesos de interés en Astrofísica o en atmósferas planetarias. Presentaremos diferentes ejemplos paradigmáticos de esta actividad en la que se exploran desde aspectos estructurales, hasta aspectos espectroscópicos y dinámicos. Entre los últimos, cabe destacar estudios en los que se demuestra la importancia de procesos a dos estados, prohibidos por espín, en la formación astrofísica de diversos derivados de interés. En el tratamiento espectroscópico se han hecho esfuerzos interesantes, que han aunado teoría y experimento, en el estudio de sistemas relevantes desde el punto de vista atmosférico, como los hidratos de ácido nítrico, o el tratamiento espectroscópico de moléculas no rígidas. No menos interesantes son los estudios de fotoabsorción de radicales o de procesos multifotónicos. Son particularmente abundantes los estudios dedicados a la reactividad específica de sistemas de interés astrofísico o atmosférico, con el objetivo de esclarecer vías de formación de determinados compuestos o de proporcionar mecanismos que permitan identificar las etapas reactivas limitantes de reacciones de interés en esos medios y sobre los que no existía información previa. Así, por ejemplo, se han publicado interesantes estudios sobre la formación o propiedades de compuestos de fósforo, de silico o de azufre o sobre mecanismos de reacción en los que intervienen el ozono, el radical nitrato, el radical OH u otras especies. Finalmente, son también particularmente relevantes los estudios que varios grupos españoles han llevado, y siguen llevando a cabo, sobre sistemas débilmente enlazados, como complejos de Van der Waals o complejos por enlace de hidrógeno, que sin duda juegan un papel importante tanto en medios atmosféricos como interestelares.

Yáñez, M.

389

Magnetospheric Response To The Solar Wind Dynamic Pressure Inferred From Polar Cap Index  

NASA Astrophysics Data System (ADS)

The North-East region of Venezuela lies on the border of the friction zone between the Caribbean and South-American tectonic plates, a source of great seismicity. The first written news of an earthquake in the American Continent were those of the earth- quake of september 1530 which caused damage to Cumaná, the first town of that Continent. Since then a continuous series of earthquakes have been reported, many of them with damaging effects on Cumaná; those caused in the 1929 earthquake (17-01- 1929; with IX Mercalli degrees) were well described by Sidney Paige in the Vo. 20 of the B.S.S.A., March, 1930. An earthquake of magnitude 5.9 {11-06-1986; 10.26z N,63.29z W} was the trigger for the Unesco`s intention to declare the Estado Sucre as a pilot zone for seismological studies. In 1991 a report issued by the International Institute of Earthquake Prediction Theory and Matematical Geophysics (Academy of Sciences, U.R.S.S.) stated that the ocurrence of an earthquake of great magnitude which could affect the North-East region of Venezuela was possible. Other studies of the seismicity of the region have been carried out. The interest of the authorities and of the seismologists reached a peak with the earthquake of july 1997 (10.456z N, 63.555z W), with a magnitude of 6.9; there was a death toll of 73, around 528 people injured and more than 2000 houses needed to be completely rebuilt. A study of micro- zonification of the city of Cumaná has been carried out recently and the results of this study will be presented also to this Congress.

Lukianova, R.; Troshichev, O.

390

Argentina: the road to energy independence. Part 1. Petroleum and natural gas  

SciTech Connect

It is established that Argentina is now self-sufficient in oil. The only import contract (with Saudi Arabia) was to expire at the end of 1982. But new discoveries are needed and more conservation measures taken to avoid imports without endangering industrial development. Oil reserves currently are about 2500 million barrels. Production was 179.7 million barrels in 1980 and 181.4 million barrels in 1981; production in 1982 should slightly exceed that of 1981. Natural gas reserves have increased during the past 16 years from almost 6321 million cubic feet in 1966 to 22,919 million cubic feet in 1982. Brazil and Uruguay are suggested as possible importers. Argentine territory contains 19 sedimentary basins (43% in the continent and 36% on its continental shelf). According to Gas del Estado, the 10 main sedimentary basins have an estimated 21,189 million cubic feet of proven reserves of natural gas. One official estimates that there are also some 8,829,000 million cubic feet more in the country. Argentina's natural gas production in the first half of 1982 was 196,173 million cubic feet; production in 1981 was 399,056 million cubic feet; 368,191 in 1980; 342,517 in 1979, and 317,055 in 1978. Natural gas participation in total national energy consumption is now 23%, and oil is 67%. Officials expect natural gas to account for 30% by 1985. The Energy Detente fuel price/tax series is updated for countries of the Eastern Hemisphere.

Not Available

1982-12-09

391

[Reproductive phenology of three vegetation types from a coastal plain of Paraguana Penninsula, Venezuela].  

PubMed

Reproductive phenology of 51 plant species was evaluated according to life form and vegetation types in a coastal plain of the Paraguaná Peninsula, Estado Falcón, Venezuela. Plant species distribution according to three vegetation types (herbaceous littoral, herbaceous psamophil, and mangrove area) was determined. Life form frequency was different according to vegetation type. Herbaceous littoral and herbaceous psamophil vegetation were dominated by herbaceous species; woody species were mostly frequent in the mangrove vegetation. Phenological data revealed that 14 (27.5%) plant species flower and fruit year-round; 23 (45.1%) plant species flower and fruit at the beginning of the wet season; seven (13.7%) plant species flower at the end of wet season, and seven (13.7%) more flower at the beginning of the dry season. Flowsring and fruiting phenology showed similar frequency distribution during the year; reproductive phenology was independent of life forms. Flowering and fruiting peaks occurred during the rainy season and the beginning of the dry season for trees and perennial herbs, and from one to three months later for shrubs and annual herbs. The lowest proportion of flowering and fruiting occurred before rain increase for all life forms. Flowering and fruiting phenologies were similar for the three vegetation types evaluated: flowering peak occurred during the lowest value of precipitation, three to four months after precipitation peak, and fruiting peak occurred four months later from the precipitation peak. These results suggest that flowering and fruiting phenology were not affected by life form and vegetation types. The peaks of flowering and fruiting during the lowest values of precipitation may be considered as a slow and late response to the precipitation maximum, and to the proximity between maximum and minimum of precipitation. PMID:12945492

Lemus-Jiménez, Luis José; Ramírez, Nelson

2002-01-01

392

Precessão do jato de 3C120: simulações hidrodinâmicas 3D  

NASA Astrophysics Data System (ADS)

Observações com técnicas de interferometria com longa linha de base têm mostrado a existência de um jato relativístico com componentes superluminais na região central de 3C 120. Estas componentes são ejetadas em distintas direções no plano do céu e com diferentes velocidades aparentes. Estas características foram interpretadas em trabalhos anteriores como efeitos da precessão do jato relativístico. Neste trabalho, realizamos simulações tri-dimensionais do jato de 3C 120 utilizando os parâmetros de precessão determinados em trabalhos anteriores e variando as características iniciais do jato e meio ambiente, tais como densidade numérica e temperatura. Todas as simulações foram feitas com o código hidrodinâmico YGUAZÚ-A, assumindo-se um jato adiabático descrito por uma equação de estado relativística. Pelo fato de estarmos utilizando um código hidrodinâmico, nós assumimos que a intensidade do campo magnético e a distribuição de partículas, necessários para se calcular a emissão sincrotron, são proporcionais à pressão hidrodinâmica. Comparação entre dois cenários distintos, nos quais o material do jato é ejetado com velocidade constante (jato contínuo) e com velocidade modulada por um padrão sinusoidal no tempo (jato intermitente), é apresentada e discutida. Para jatos que apresentam fenômenos de precessão e intermitência, com amplitude de variação na velocidade de injeção maior que dez por cento da velocidade média de injeção, a hipótese balística, controlada pela intermitencia, é mais provável. Por outro lado, para jatos com precessão mas sem intermitência (ou com amplitude de variabilidade em velocidade mais baixa que no caso anterior), o efeito da precessão na morfologia do jato não é desprezível. Portanto, de um modo geral, ambos efeitos (precessão e movimentos balísticos) devem estar concorrendo para afetar a morfologia dos jatos superluminais.

Caproni, A.; de Gouveia dal Pino, E. M.; Abraham, Z.; Raga, A. C.

2003-08-01

393

Mechanisms of Earth activity forsed by external celestial bodies:energy budjet and nature of cyclicity  

NASA Astrophysics Data System (ADS)

In given report we discuss tidal and non-tidal mechanisms of forced tectonic (endogenous) activity of the Earth caused by gravitational attraction of the Moon, Sun and the planets. On the base of the classical solution of the problem of elasticity for model of the Earth with concentric mass distribution the evaluations of the tidal energy and power of Earth lunar-solar deformations, including their joint effect, were obtained. Important role of the joint energetic effect of rotational deformation of the Earth with lunar and solar tides was illustrated. Gravitational interaction of the Moon and Sun with non-spherical, non-homogeneous shells of the Earth generates big additional mechanical forces and moments of the interaction of the neighboring shells (rigid core, liquid core, mantle, lithosphere and separate plates). Acting of these forces and moments in the different time scales on the corresponding sells generates cyclic perturbations of the tensional state of the shells, their deformations, small relative translational displacements and small relative rotational oscillations of the shells. In geological period of time it leads to a fundamental tectonic reconstruction of the Earth. These additional forces and moments of the cyclic celestial-mechanical nature produce cyclic deformations of the all layers of the body and organize and control practically all natural processes. The additional force between mantle and core is cyclic and characterized by the wide basis of frequencies typical for orbital motions (of the Sun, Moon and planets), for rotational motion of the Earth, Moon and Sun and for many from observed natural processes. The problem about small relative translatory-rotary motion of the two shells separated by the thin viscous-elastic layer is studied. The differential equations of motion were obtained and have been studied in particular cases (plane motion of system; case of two axisymmetrical interacting shells and oth.) by approximate methods of small parameter and methods of averaging. Some regimes of the relative translatory-rotary motions of the shells were described in analytical form. Wide set observed geodynamical and geophysical phenomena can be illustrated as results or as reflections of the small and slow relative displacements of the shells in corresponding time-scales. Barkin's work was accepted and financed by RFBR grant 02-05-64176 and by grant SAB2000-0235 of Ministry of Education of Spain (Secretaria de Estado de Educacion y Universidades).

Barkin, Yu. V.; Ferrandiz, J. M.

2003-04-01

394

Onshore and offshore wind resource evaluation in the northeastern area of the Iberian Peninsula: quality assurance of the surface wind observations  

NASA Astrophysics Data System (ADS)

Offshore wind energy is becoming increasingly important as a reliable source of electricity generation. The areas located in the vicinity of the Cantabrian and Mediterranean coasts are areas of interest in this regard. This study targets an assessment of the wind resource focused on the two coastal regions and the strip of land between them, thereby including most of the northeastern part of the Iberian Peninsula (IP) and containing the Ebro basin. The analysis of the wind resource in inland areas is crucial as the wind channeling through the existing mountains has a direct impact on the sea circulations near the coast. The thermal circulations generated by the topography near the coast also influence the offshore wind resource. This work summarizes the results of the first steps of a Quality Assurance (QA) procedure applied to the surface wind database available over the area of interest. The dataset consists of 752 stations compiled from different sources: 14 buoys distributed over the IP coast provided by Puertos del Estado (1990-2010); and 738 land sites over the area of interest provided by 8 different Spanish institutions (1933-2010) and the National Center of Atmospheric Research (NCAR; 1978-2010). It is worth noting that the variety of institutional observational protocols lead to different temporal resolutions and peculiarities that somewhat complicate the QA. The QA applied to the dataset is structured in three steps that involve the detection and suppression of: 1) manipulation errors (i.e. repetitions); 2) unrealistic values and ranges in wind module and direction; 3) abnormally low (e.g. long constant periods) and high variations (e.g. extreme values and inhomogeneities) to ensure the temporal consistency of the time series. A quality controlled observational network of wind variables with such spatial density and temporal length is not frequent and specifically for the IP is not documented in the literature. The final observed dataset will allow for a comprehensive understanding of the wind field climatology and variability and its association with the large scale atmospheric circulation as well as their dependence on local/regional features like topography, land-sea contrast, etc. In future steps, a high spatial resolution simulation will be accomplished with the WRF mesoescale model in order to improve the knowledge of the wind field in the area of interest. Such simulation will be validated by comparison with the observational dataset. In addition, studies to analyze the sensitivity of the model to different factors such as the parameterizations of the most significant physical processes that the model does not solve explicitly, the boundary conditions that feed the model, etc. will be carried out.

Hidalgo, A.; González-Rouco, J. F.; Jiménez, P. A.; Navarro, J.; García-Bustamante, E.; Lucio-Eceiza, E. E.; Montávez, J. P.; García, A. Y.; Prieto, L.

2012-04-01

395

Spirituality and Cultural Identification Among Latino and Non-Latino College Students  

PubMed Central

The purposes of this study were to examine (a) differences in spiritual perspectives and practices of Latino and non-Latino young adults and (b) the cultural relevance of the Latino Spiritual Perspective Scale (LSPS). Studies indicate that spiritual perspectives are embedded within cultural group norms and vary significantly across ethnic groups. A cross-sectional survey design was used with a convenience sample of 223 Latino and non-Latino university students in the Southwestern United States. The Spiritual Perspective Scale (SPS), the LSPS, the Orthogonal Cultural Identification Scale, and a demographic questionnaire were used. Latinos scored significantly higher than non-Latinos in both measures of spiritual perspectives. Self-reported behavioral measures, such as frequency of personal prayer, were also higher among the Latino group. Latino cultural identification was the only significant predictor of LSPS scores. Findings from this study indicate that spirituality among Latinos has meanings specific to the cultural group context. These findings have implications for nursing research involving the conceptualization and measurement of spirituality among multiethnic groups. Los propósitos de este estudio eran examinar: (a) diferencias en perspectivas espirituales y prácticas de jóvenes Latinos y no Latinos; y (b) la relevancia cultural de la Escala de la Perspectiva Espiritual Latina. Estudios indican que perspectivas espirituales están incrustadas entre normas culturales del grupo y varían considerablemente entre grupos étnicos. Un diseño transversal y de encuesta fue utilizado con una muestra de conveniencia de 233 estudiantes universitarios Latinos y no Latinos en el Suroeste de los Estados Unidos. La Escala de la Perspectiva Espiritual (EPE), la Escala de la Perspectiva Espiritual Latina (EPEL), la Escala Ortogonal de Identificación Cultural, y un cuestionario demográfico fueron utilizados. Los Latinos calificaron considerablemente más alto que los no Latinos en ambas medidas de perspectivas espirituales. Medidas de comportamiento auto-reportadas, como la frecuencia de oración, también estuvieron más altas en el grupo Latino. La identificación con la cultura Latina fue el único vaticinador de las calificaciones de la EPEL. Los resultados de este estudio indican que la espiritualidad entre Latinos tiene significados específicos al contexto del grupo cultural. Estas conclusiones tienen implicaciones para las investigaciones de enfermería que involucran la conceptualización y medida de la espiritualidad entre grupos multiétnicos.

Campesino, Maureen; Belyea, Michael; Schwartz, Gary

2010-01-01

396

Courtship behavior of different wild strains of Ceratitis Capitata (Diptera: Tephritidae)  

SciTech Connect

This study documents differences in the courtship behavior of wild strains of Ceratitis capitata (Wiedemann) from Madeira (Portugal), Hawaii (U.S.A.), Costa Rica, and Patagonia (Argentina). Some traits showed large variations and others substantial overlaps. The angle at which the male faced toward the female at the moment of transition from continuous wing vibration and intermittent buzzing changed very little during the course of courtship in all strains, but males from Madeira tended to face more directly toward the female than other males. Females tended to look more, and more directly, toward the males as courtship progressed in all strains. The distance between male and female tended to decrease as courtship proceeded in all strains, but the distances at which males initiated continuous vibration, intermittent buzzing, and jumped onto the female were relatively less variable between strains, except for the strain from Costa Rica. Flies of Madeira courted for longer and the male moved his head and buzzed his wings longer than the other strains. (author) [Spanish] Este estudio documenta diferencias en el comportamiento de cortejo de cepas silvestres de Ceratitis capitata (Wied.) provenientes de Madeira (Portugal), Hawaii (Estados Unidos de Norte America), Costa Rica y Patagonia (Argentina). Algunas caracteristicas mostraron grandes variaciones y traslape substancial. Los angulos a los cuales los machos miraron hacia las hembras cambiaron muy poco en el momento de la transicion de la vibracion continua al zumbido intermitente durante el curso del cortejo en todo las cepas, pero los machos de Madeira tendieron a enfrentar mas directamente a la hembra que otros machos. Los angulos de las hembras disminuyeron claramente durante el cortejo en todas las cepas. La distancia entre el macho y la hembra tendio a disminuir conforme el cortejo continuaba en todas las cepas, pero las distancias a las cuales los machos iniciaron la vibracion continua, el zumbido intermitente, y el salto sobre la hembra eran relativamente menos variables entre cepas excepto la cepa de Costa Rica. Moscas de Madeira cortejaron mas tiempo y el macho moviosu cabeza y zumbaba sus alas mas prolongadamente que las otras cepas. (author)

Briceno, D. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria (Costa Rica); Eberhard, W. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria and Smithsonian Tropical Research Institute (Costa Rica); Vilardi, J. [Dpto. de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires (Argentina); Cayol, J.-P. [Technical Cooperation Division, IAEA, Wagramerstrasse 5, P.O. Box 100 A-1400, Vienna (Austria); Shelly, T. [A. C. , D. , E. USDA/APHIS/CPHST, 41-650 Ahiki St. Waimanalo, HI 96795 (United States)

2007-03-15

397

Open-field host specificity test of Gratiana boliviana (Coleoptera: Chrysomelidae), a biological control agent of tropical soda apple (Solanaceae) in the United States  

SciTech Connect

An open-field experiment was conducted to assess the suitability of the South American leaf feeding beetle Gratiana boliviana Spaeth for biological control of Solanum viarum Dunal in the USA. An open-field test with eggplant, Solanum melongena L., was conducted on the campus of the University of Buenos Aires, Argentina, and a S. viarum control plot was established 40 km from the campus. One hundred adult beetles were released in each plot at the beginning of the experiment during the vegetative stage of the plants, and forty additional beetles were released in the S. melongena plot at the flowering stage. All the plants in each plot were checked twice a week and the number of adults, immatures, and eggs recorded. Results showed almost a complete rejection of eggplant by G. boliviana. No noticeable feeding damage was ever recorded on eggplant. The experiment was ended when the eggplants started to senesce or were severely damaged by whiteflies and spider mites. The results of this open-field experiment corroborate previous quarantine/laboratory host-specificity tests indicating that a host range expansion of G. boliviana to include eggplant is highly unlikely. Gratiana boliviana was approved for field release in May 2003 in the USA. To date, no non-target effects have been observed either on eggplant or native species of Solanum. (author) [Spanish] Una prueba de campo fue conducida para evaluar la especificidad del escarabajo suramericano defoliador Gratiana boliviana Spaeth para control biologico de Solanum viarum Dunal en los Estados Unidos. La prueba con berenjena se realizo en el campo experimental de la Universidad de Buenos Aires, Argentina, y una parcela control con S. viarum fue establecida a 40 km. Cien escarabajos adultos fueron liberados en cada parcela al inicio del experimento durante la fase vegetativa, y cuarenta escarabajos adicionales fueron liberados en la parcela de berenjena durante la floracion. Todas las plantas en cada parcela fueron inspeccionadas dos veces a la semana y el numero de adultos, larvas, y posturas fueron registrados. Resultados indicaron un casi completo rechazo de la berenjena por G. boliviana. Ningun dano visible de defoliacion en la berenjena fue detectado. Las pruebas concluyeron cuando las plantas de berenjena alcazaron su madurez o fueron severamente danadas por mosca blanca y acaros. Resultados corroboran previas pruebas de especificidad en laboratorio/cuarentena que indican que la berenjena no es un hospedero de G. boliviana y que la posibilidad de llegar a ser una plaga de este cultivo es muy remota. Gratiana boliviana fue aprobado para ser liberado en el campo en mayo del 2003. Ningun dano ha sido observado hasta la fecha a plantas no blanco. (author)

Gandolfo, D.; McKay, F. [USDA-ARS South American Biological Control Laboratory, Hurlingham (Argentina); Medal, J.C.; Cuda, J.P. [University of Florida, Department of Entomology and Nematology, Gainesville, FL 32611 (United States)

2007-03-15

398

Condições físicas do disco de acréscimo da nova-anã V4140 SGR  

NASA Astrophysics Data System (ADS)

Discos de acréscimo são aparatos cósmicos que permitem que matéria seja eficientemente acrescida sobre uma fonte compacta pela remoção de momento angular via tensões viscosas enquanto transforma a energia potencial gravitacional em calor e, posteriormente, em radiação. Sistemas binários semi-ligados, como Variáveis Cataclísmicas (VCs) não-magnéticas, são talvez os melhores ambientes encontrados para o estudo da física desses discos de acréscimo. O desenvolvimento de técnicas de imageamento indireto, como o mapeamento por eclipses (MME) e a tomografia Doppler, permitiu avanços importantes na compreensão da física dos processos de acréscimo desses sistemas. V4140 Sagitarii é uma VC eclipsante de curto período orbital (~ 90 min) que não havia sido classificada como nova-anã ou polar. Neste trabalho apresentamos a análise do mapeamento por eclipse feito com dados de fotometria CCD nas bandas B, V e R de V4140 Sgr realizada no LNA. O objeto foi observado no declínio de erupção em julho de 1992 e em erupção em julho de 2001, isso indicou a classificação do sistema como uma nova-anã. A análise, feita sobre os mapas já apresentados em trabalho anterior, apresenta (i) diagrama cor-cor, que indica uma emissão opticamente espessa nas partes internas do disco em quiescência (R < RL1); (ii) diagrama cor-magnitude, usado para inferir uma distância de 600 +/- 10 pc ao sistema; (iii) a distribuição radial de temperatura observada que concorda com a lei de disco espesso em estado estacionário TµR-3/4, com temperaturas em torno de 10000 K e 3000 K ns partes internas e externas do disco em quiescência, respectivamente; (iv) a evolução da distribuição de temperatura no declínio de erupção; (v) estimativa da transferência de massa de 109.9+/-0.1 M¤/ano em quiescência, similar àquelas observadas em novas-like. O sistema é comparado à outras novas-anãs (e.g. OY Car e Z Cha) em quiescência e erupção, mostrando-se tratar um objeto peculiar que difere em vários aspectos o comportamento esperado de novas-anãs.

Borges, B.; Baptista, R.

2003-08-01

399

Depth Seismic-Migration Modeling Offshore `Tierra Del Fuego', Argentina (54° 25' S)  

NASA Astrophysics Data System (ADS)

Within the framework of the TESAC Project (Tectonic Evolution of the South America-Scotia plate boundary during the Cenozoic), about 900 km of multichannel seismic reflection profiles were acquired off the Atlantic coast of the Tierra del Fuego Island. The profiles cut across the South America-Scotia plate boundary, a transform margin which traverses in an E-W direction the Island. Data processing and interpretation of a seismic reflection profile is presented in this contribution. A robust post-stack technique involved depth-migration of the seismic section, using an interval-velocity model of the upper Crust adjusted by iterative processing. An interpreted seismic- velocity section (which trends roughly NW-SE), shows a complex superposition of different tectonic structures, with presence of extensional, compressional and transtensional features in the area located to the north of Isla de los Estados. The profile, which crosses the offshore part of the Magallanes fold-and-thrust belt, images the deep structural framework of part of this tectonic province. The identification of acoustic fabrics and seismic discontinuities allowed us to recognize four main units. Overlaying the acoustic basement (Seismic unit 1), there is another unit (Seismic unit 2) which exhibits some reflector packages of high amplitude; this unit must be related to the volcanic and volcaniclastic sequences of Tobífera/Lemaire Fms. The Seismic Unit 3 displays internal reflector configurations of moderate amplitude and continuity and low-to-moderate frequency; the Yaghán/Beauvoir Fms must be the onshore equivalent of this unit. An uppermost seismic layer (Unit 4) may be correlated with the Tertiary sediments of the Magallanes foreland basin which were involved in the fold and thrust belt. A major structure identified in the studied seismic profile is a SE structural high (which involves the units 1, 2 and 3) and a NW down-faulted area. The latter display folds of kilometric size (3-4 km). Steeply dipping (mainly to the south) reverse faults cut through the folds. Some of these faults represent old extensional faults of the Middle- Mesozoic Rocas Verdes marginal basin rifting, which have been subsequently inverted by compressional stress fields. In addition, a noticeable flower fault system is recognized in the seismic profile, which involves both the sedimentary cover and the acoustic basement. This fault is interpreted as the result of shear stresses produced along the transcurrent South America-Scotia plate boundary.

Comínguez, A. H.; Flores, J.; Tassone, A.

2007-05-01

400

Movement of water through the thick unsaturated zone underlying Oro Grande and Sheep Creek Washes in the western Mojave Desert, USA  

NASA Astrophysics Data System (ADS)

Previous studies indicate that a small quantity of recharge occurs from infiltration of streamflow in intermittent streams in the upper Mojave River basin, in the western Mojave Desert, near Victorville, California. Chloride, tritium, and stable isotope data collected in the unsaturated zone between 1994 and 1998 from boreholes drilled in Oro Grande and Sheep Creek Washes indicate that infiltration of streamflow occurs to depths below the root zone, and presumably to the water table, along much of Oro Grande Wash and near the mountain front along Sheep Creek Wash. Differences in infiltration at sites along each wash are the result of hydrologic variables such as proximity to the mountain front, quantity of streamflow, and texture of the subsurface deposits. Differences in infiltration between the washes are the result of large-scale geomorphic processes. For example, Oro Grande wash is incised into the Victorville fan and infiltration has occurred at approximately the same location over recent geologic time. In contrast, Sheep Creek Wash overlies an active alluvial fan and the stream channel can move across the fan surface through time. Infiltration does not occur to depths below the root zone at control sites outside of the washes. Résumé. Des études précédentes indiquent qu'une faible part de la recharge est assurée par l'infiltration d'écoulement de surface dans des cours temporaires du bassin supérieur de la rivière Mojave, dans la partie occidentale du désert Mojave, près de Victorville (Californie). Des données portant sur les chlorures, le tritium et les isotopes stables, recueillies dans la zone non saturée entre 1994 et 1998 grâce à des forages réalisés dans les fonds de vallées d'Oro Grande et de Sheep Creek, montrent que l'infiltration des écoulement de surface se produit en profondeur sous la zone racinaire, et probablement jusqu'à la nappe, le long de la plus grande partie du cours de l'Oro Grande et au pied des montagnes le long de celui de Sheep Creek. Des différences dans l'infiltration aux sites le long de chacun des fonds de vallée sont la conséquence de variables hydrologiques comme la proximité du pied des montagnes, la quantité d'écoulement de surface et la texture des dépôts. Des différences dans l'infiltration entre les fonds de vallée résultent de processus géomorphologiques à grande échelle. Par exemple, le vallon de l'Oro Grande entaille le cône de déjection de Victorville et l'infiltration s'est toujours produite à peu près au même endroit lors des époques géologiques récentes. Au contraire, le fonds de la vallée de Sheep Creek passe sur un cône alluvial actif et le lit du cours d'eau peut divaguer à la surface du cône au cours du temps. L'infiltration ne se produit pas en profondeur sous la zone racinaire dans les sites hors des fonds de vallée. Resumen. Estudios previos indican que hay una pequeña contribución a la recarga por infiltración de aguas superficiales en cauces intermitentes de la cuenca del Río Mojave, en el sector occidental del Desierto de Mojave, cerca de Victorville (California, Estados Unidos de América). Los datos de cloruros, tritio e isótopos estables en la zona no saturada, registrados en sondeos perforados en los torrentes Oro Grande y Sheep Creek entre 1994 y 1998, indican que dicha infiltración tiene lugar hasta profundidades superiores a la zona radicular y, presumiblemente, hasta el nivel freático. Esto acontece en gran parte del Oro Grande Wash y cerca del frente montañoso, a lo largo del Sheep Creek Wash. Las diferencias en la infiltración en puntos de cada torrente resultan de variables hidrológicas tales como la proximidad al frente montañoso, el caudal en los cauces y la textura de los depósitos subsuperficiales. Las diferencias en la infiltración entre ambos torrentes son causadas por procesos geomórficos de gran escala. Por ejemplo, el Oro Grande Wash está encajado en el abanico de Victorville, de modo que la infiltración se ha estado produciendo en aproximadamente el mismo punto durante las époc

Izbicki, John; Radyk, John; Michel, Robert

2002-04-01

401

Farmyard Manure and Fertilizer Effects on Seed Potato (Solanum tuberosum L.) Yield in Green House Production  

NASA Astrophysics Data System (ADS)

Nowadays is widely well know that the potato is an important vegetable crop at Brazíl. It is grown on about 173.000 ha, with total yield of 2.6 million tons year-1. The average yield is 15 t ha-1. This level is very low because degeneration of crop is rapid under high temperature and high viruses pressure. Therefore seed potato propagation and production is principal on consumption potato production. This is why we found it necessary to develop it. The latossolo vermelho soil-farmyard manure- burnt rice straw-fertilizer 4N:14P:8K greenhouse pot trial was set up at the National Vegetable Crops Research Center, Brasília-DF, Brazíl in 1990. The methods of the experiments were soil x farmyard manure x burnt rice straw, soil x 4N:14P:8K fertilizer and soil x farmyard manure x burnt rice straw x 4N:14P:8K fertilizer on randomized block design in total 29 combination of treatments in 5, 5 and 3 repetitions with in a total parcel of 116. According to chemical analysis of the a., soil, b., farmyard manure and c., burnt rice straw the agrochemistry parameters were as follows (estimated datas): a., latossolo vermelho soil: CaCO3 0.3-0.7%, humo 0.9-1.0%, pH (H2O) 5.3, pH (KCl) 4.5, AL- P2O5 3.2-3.5 mg kg-1, AL- K2O 180 mg kg-1, Mg (KCl) 70 mg kg-1, EDTA-Zn 0.5-0.8 mg kg-1, EDTA-Cu 0.5-0.6 mg kg-1, b., farmyard manure: N 1.8 g kg-1, P2O5 2.0 g kg-1, K2O 4.0 g kg-1, c., burnt rice straw: N 0.8 g kg-1, P2O5 7.0 g kg-1, K2O 4.5 g kg-1. The experimental datas were estimated by analysis of variance, ANOVA and MANOVA. The main conclusions were as follows: 1. Mixture of 80% latossolo vermelho, 10% burnt rice straw and 10% farmyard manure were shown best performance on seed potato productivity. The piece of tubers with a 0-20 mm (consumption seeds) was increased by 77%. 2. Total seed potato number was reached maximum at 10.8 g pot-1 4N:14P:8K fertilizer regarding to average of treatments with a 33%. 3. Dry biomassa production plant-1 was decreased by high dose of 4N:14P:8K fertilizer (18.0 g pot-1) with a hard effect (57%). Our results are shown that it was possible developing of the seed potato production under tropical greenhouse conditions by optimalised soil-organic matter-fertilizer system. This datas should be as indicators to sustainable field potato advisory systems. Keywords: potato (Solanum tuberosum L.), greenhouse, latossolo vermelho soil, farmyard manure, burnt rice straw, 4N:14P:8K fertilizer, sustainability, yield Introducáo: Importância e situação actual em produção da batata no Brazíl A batata é atualmente uma das hortaliças de maior importância no Brasíl (Márton 2000a., 2000b.) com um cultivo annual médio de 173.000 ha e uma produção de 2600000 t. A produtividade médio nacional é de 15 t ha-1, muito baixa se considerar que é possivel a obtenção de rendimentos acima de 40 t ha-1. Observa- se também, que existe variação no produtividade entre regiões e estados. E importante como fonte de alimento pelo seu alto valor nutricional a quantidade produzida muito superior por unidade de área a tempo, se comparada com diversas outras culturas (László 2000b., 2000c.). Os estados que tradicionalmente produzem batata em maior ou menor escala são indicados em seguente: Pernambuco, Ceará, Sergipe, Goiás, Mato Grosso, Mato Grosso do Sul, Rondonia e Acre. Os plantios predominantes são o das águas e das secas, sendo o de inverno bem menos expressivo, pois poucas áreas permitem o seu cultivo, na maioria dos casos necessitando- se de irrigação. Considerando as três épocas de plantio e diferentes condições climaticas brasileiras, podemos definir de um modo geral o plantio de batata no Brasíl da seguinte maneira: Nordeste e Centro- Oeste- plantio de inverno, Sudeste- plantio das águas, secas e inverno, Sul- plantio das aguas, secas e inverno. Sendo este último em áreas muito limitadas. Dentre as hortaliças a batata é uma das culturas mais estudadas actualmente. Os principais problemas que afetam a cultura da batata podem ser de ordem agronómica, economica e comercial. Como exemplos destes podem se

László, M.

2009-04-01

402

Groundwater recharge and chemical evolution in the southern High Plains of Texas, USA  

NASA Astrophysics Data System (ADS)

The unconfined High Plains (Ogallala) aquifer is the largest aquifer in the USA and the primary water supply for the semiarid southern High Plains of Texas and New Mexico. Analyses of water and soils northeast of Amarillo, Texas, together with data from other regional studies, indicate that processes during recharge control the composition of unconfined groundwater in the northern half of the southern High Plains. Solute and isotopic data are consistent with a sequence of episodic precipitation, concentration of solutes in upland soils by evapotranspiration, runoff, and infiltration beneath playas and ditches (modified locally by return flow of wastewater and irrigation tailwater). Plausible reactions during recharge include oxidation of organic matter, dissolution and exsolution of CO2, dissolution of CaCO3, silicate weathering, and cation exchange. Si and 14C data suggest leakage from perched aquifers to the High Plains aquifer. Plausible mass-balance models for the High Plains aquifer include scenarios of flow with leakage but not reactions, flow with reactions but not leakage, and flow with neither reactions nor leakage. Mechanisms of recharge and chemical evolution delineated in this study agree with those noted for other aquifers in the south-central and southwestern USA. Résumé. L'aquifère libre des Hautes Plaines (Ogallala) est le plus vaste aquifère des états-Unis et la ressource de base pour l'eau potable de la région semi-aride du sud des Hautes Plaines du Texas et du Nouveau-Mexique. Des analyses de l'eau et des sols prélevés au nord-est d'Amarillo (Texas), associées à des données provenant d'autres études dans cette région, indiquent que des processus intervenant au cours de l'infiltration contrôlent la composition de l'eau de la nappe libre dans la moitié septentrionale du sud des Hautes Plaines. Les données chimiques et isotopiques sont compatibles avec une séquence de précipitation épisodique, avec la reconcentration en solutés dans les sols des hautes terres par évapotranspiration, avec le ruissellement et l'infiltration dans les playas et les fossés (modifiée localement par l'écoulement en retour des eaux usées et des laisses d'irrigation). Des réactions probables intervenant au cours de la recharge sont l'oxydation de la matière organique, la dissolution et le dégazage du CO2, la dissolution du CaCO3, l'altération des silicates et l'échange de cations. Les données concernant Si et 14C laissent penser qu'il existe une drainance descendante à partir d'aquifères perchés vers l'aquifère des Hautes Plaines. Des modèles vraisemblables de bilan de matière pour l'aquifère des Hautes Plaines prennent en compte des scénarios d'écoulement avec drainance mais sans réactions, des écoulements avec réactions mais sans drainance et des écoulements sans réactions ni drainance. Les mécanismes de recharge et d'évolution chimique déterminés dans cette étude sont en accord avec ceux mis en évidence dans d'autres aquifères du centre sud et du sud-ouest des états-Unis. Resumen. El acuífero libre de High Plains (Ogallala) es el mayor de los Estados Unidos y supone la fuente principal de abastecimiento en la región semiárida del sur de High Plains (Texas) y de Nuevo México. Los análisis de agua y suelos realizados al nordeste de Amarillo (Texas), junto con los datos de otros estudios regionales, indican que los procesos que tienen lugar durante la recarga del acuífero controlan la composición de las aguas subterráneas en la mitad septentrional de los High Plains del Sur. Los datos isotópicos y hidroquímicos son coherentes con una secuencia de episodios de precipitación, concentración de solutos en la parte superior del suelo por evapotranspiración, escorrentía, e infiltración a través de 'playas' y zanjas (modificadas localmente por los flujos de retorno de aguas residuales y de excedentes de riego).

Fryar, Alan; Mullican, William; Macko, Stephen

2001-11-01

403

The migration, dissolution, and fate of chlorinated solvents in the urbanized alluvial valleys of the southwestern USA  

NASA Astrophysics Data System (ADS)

The migration, dissolution, and subsequent fate of spilled chlorinated solvents in the urban alluvial valleys of the southwestern U.S. appear to be governed by a unique set of hydrogeologic and geochemical processes occurring within terrigeneous clastic depositional systems. The alluvial and lacustrine fill of the basins, the trapping of solvents in fine-grained sediments beneath the urbanized valley centers, the oxic conditions typical of the deeper alluvium, and the contaminant-transport patterns produced by large-scale basin pumping combine to produce long aqueous-phase plumes derived from the dissolution of trapped chlorinated solvents. Although of limited aqueous solubility, these dense solvents are sufficiently mobile and soluble in the southwestern alluvial valleys to have produced aqueous plumes that have migrated several kilometers through the deeper alluvium and have contaminated valuable water-supply well fields in California, Arizona, and New Mexico. The typical length of these plumes and the presence of oxic groundwater indicate that it is unlikely that natural attenuation will be a practical remedial option in the southwestern alluvial valleys or in other alluvial systems in which similar hydrogeologic and geochemical conditions exist. Résumé La migration, la dissolution et l'évolution consécutive des rejets de solvants chlorés dans les vallées alluviales du sud-ouest des États-Unis paraissent déterminées par un même ensemble de processus hydrogéologiques et géochimiques intervenant dans des formations de dépôts clastiques terrigènes. Les remplissages alluviaux et lacustres des bassins, le piégeage des solvants par des sédiments fins sous les centres des vallées urbanisées, les conditions oxiques typiques des alluvions plus profondes et les types de transport de contaminants provoqués par le pompage à l'échelle du bassin se combinent pour produire des panaches, étendus dans la phase aqueuse, provenant de la dissolution de solvants chlorés piégés. Malgré leur faible solubilité dans l'eau, ces solvants denses sont suffisamment mobiles et solubles pour avoir produit, dans le sud-ouest des vallées alluviales, des panaches aqueux qui ont migré de plusieurs kilomètres dans les alluvions plus profondes et ont contaminé des champs captants pour l'eau potable en Californie, en Arizona et au Nouveau-Mexique. La longueur de ces panaches et la présence d'eau souterraine en conditions oxiques indiquent qu'il est peu probable que la décroissance naturelle soit un recours pratique de décontamination dans les vallées alluviales du sud-ouest ou dans d'autres systèmes alluviaux dans lesquels existent des conditions hydrogéologiques et géochimiques semblables. Resumen La migración, disolución y transporte de compuestos clorados en valles aluviales urbanos del sudoeste de los Estados Unidos de América parecen estar gobernados por un conjunto único de procesos hidrogeológicos y geoquímicos que tienen lugar en los depósitos clásticos. El relleno aluvial y lacustre de las cuencas, la inmovilización de los solutos en sedimentos de grano fino bajo las zonas urbanizadas, los condiciones óxicas típicas del aluvial profundo y las direcciones de transporte regidas por los fuertes bombeos en las cuencas se combinan para producir grandes penachos en fase acuosa procedentes de la disolución de los compuestos clorados atrapados en el medio. Aunque la solubilidad de estos compuestos clorados densos es pequeña, es suficiente para producir penachos que en algunos casos se han desplazado varios kilómetros a través del aluvial profundo y han llegado a contaminar zonas de extracción muy productivas en California, Arizona y Nuevo México. La longitud de estos penachos y la presencia de agua subterránea oxidante indican que es improbable que la degradación natural sea un buen método de limpieza de estos acuíferos o de otros sistemas aluviales que presenten características hidrogeológicas y geoquímicas semejantes.

Jackson, R. E.

404

Efectos de la irradiación iónica en hielos de moléculas carbonadas  

NASA Astrophysics Data System (ADS)

En Astrofísica podemos encontrar numerosos contextos en los cuales se observan moléculas en estado sólido que, en condiciones estándar de presión y temperatura, se encontrarían como gases o líquidos. Dichas moléculas se denominan hielos y han sido observadas en nubes densas del medio interestelar, en envolturas circumestelares, en satélites del Sistema Solar, en cometas, etc. Los hielos pueden ser alterados en su composición química debido a diversos factores como por ejemplo variaciones de temperatura o aportes energéticos por parte de la irradiación, ya sea tanto de fotones ultravioleta como de iones. Dependiendo del escenario astrofísico que analicemos, unos factores cobran más importancia que otros. Los experimentos de laboratorio muestran el efecto que produce sobre la composición de los hielos la irradiación iónica, en particular sobre los que contenían alguna molécula con átomos de carbono. Dicha composición se analiza con espectroscopía IR en el rango de 2 a ˜ 25? m. La aplicabilidad de los resultados de los experimentos es distinta dependiendo de la composición química inicial de los hielos, del tipo de ion utilizado y de la dosis total de irradiación. Existen efectos generales de la irradiación sobre la materia en los experimentos de relevancia astrofísica como son: - la formación de nuevas moléculas, que pueden incluir o no el ion incidente; - la progresiva pérdida de hidrógeno (carbonización) cuando irradiamos muestras que originalmente contienen una determinada relación carbono/hidrógeno; - la variación de la temperatura de sublimación que presentan algunos hielos. Esto puede suceder tanto en hielos que estaban presentes antes de la irradiación como en hielos formados por ésta. Se presentará el papel del ion en la formación de nuevas moléculas a partir de las que originalmente se encontraban en el hielo. Al penetrar en él, el ion provoca distintos procesos como rotura de enlaces y excitaciones electrónicas. En la mayor parte de los casos las especies producidas por la rotura del enlace, se recombinan volviendo a formar la molécula original. Sin embargo un pequeño porcentaje es capaz de formar nuevas moléculas. Si el ion queda implantado en el hielo y es reactivo (H+, C+,ldots) podría formar parte de una molécula nueva que incorpora un átomo que inicialmente no se encontraba presente en el hielo. También se presentará un contraejemplo para demostrar que no es posible asegurar que siempre que implantemos un ion reactivo, éste formará parte de nuevas moléculas en la mezcla. También se presentará la formación de nuevas moléculas a partir de la irradiación de hielos de metano, que llevan a la formación de otros compuestos como acetileno, eteno, etano,... en los cuales la relación C/H ha variado. Además de estos compuestos se forma también un residuo carbonoso (refractario) que es estable a temperatura ambiente y cuya composición química no es bien conocida. Por último, el aumento de la temperatura de sublimación es también una consecuencia de la irradiación, aunque la magnitud del aumento depende de la mezcla original y de la irradiación sufrida. Existen moléculas que llegan a variar su temperatura de sublimación en decenas de grados. Para el caso de moléculas carbonadas se forman especies por irradiación que son estables a temperatura ambiente. Con todo ello se muestra que los experimentos de laboratorio pueden ayudarnos a comprender la formación, destrucción y variación de las propiedades físicas de los hielos de interés astrofísico con la irradiación.

Satorre, M. A.

405

Delineation of capture zones for municipal wells in fractured dolomite, Sturgeon Bay, Wisconsin, USA  

NASA Astrophysics Data System (ADS)

A wellhead protection study for the city of Sturgeon Bay, Wisconsin, USA, demonstrates the necessity of combining detailed hydrostratigraphic analysis with groundwater modeling to delineate zones of contribution for municipal wells in a fractured dolomite aquifer. A numerical model (MODFLOW) was combined with a particle tracking code (MODPATH) to simulate the regional groundwater system and to delineate capture zones for municipal wells. The hydrostratigraphic model included vertical and horizontal fractures and high-permeability zones. Correlating stratigraphic interpretations with field data such as geophysical logs, packer tests, and fracture mapping resulted in the construction of a numerical model with five high-permeability zones related to bedding planes or facies changes. These zones serve as major conduits for horizontal groundwater flow. Dipping fracture zones were simulated as thin high-permeability layers. The locations of exposed bedrock and surficial karst features were used to identify areas of enhanced recharge. Model results show the vulnerability of the municipal wells to pollution. Capture zones for the wells extend several kilometers north and south from the city. Travel times from recharge areas to all wells were generally less than one year. The high seasonal variability of recharge in the study area made the use of a transient model necessary. Résumé. Une étude pour la protection d'un champ captant pour la ville de Sturgeon Bay (Wisconsin, Etats-Unis) montre qu'il est nécessaire de combiner une analyse hydrostratigraphique détaillée avec une modélisation de la nappe pour définir les zones de contribution aux puits captés pour l'alimentation en potable (AEP) dans un aquifère dolomitique fracturé. Un modèle numérique (MODFLOW) a été combiné avec un code de suivi de particules (MODPATH) pour simuler le système aquifère régional et pour délimiter les zones de prélèvements concernées par les puits de l'AEP. Le modèle hydrostratigraphique comporte des fractures verticales et horizontales et des zones à forte perméabilité. Les interprétations stratigraphiques ont été corrélées avec les données de terrain telles que les logs géophysiques, les tests entre packers et la cartographie des fractures, de manière à construire un modèle numérique avec cinq zones à forte perméabilité liées à des plans de stratification ou à des variations de faciès. Ces zones constituent des conduits majeurs de l'écoulement horizontal des eaux souterraines. Les zones de fractures qui plongent ont été simulées comme des couches minces à forte perméabilité. La localisation des roches affleurantes et les phénomènes karstiques de surface ont été utilisés pour identifier les secteurs de recharge plus importante. Les résultats du modèle montrent la vulnérabilité des puits de l'AEP à la pollution. Les zones d'alimentation des puits s'étendent à plusieurs kilomètres au nord et au sud de la ville. Les temps de parcours depuis les zones de recharge vers tous les puits sont en général inférieurs à un an. La forte variabilité saisonnière de la recharge dans la région étudiée a rendu nécessaire l'utilisation d'un modèle en régime transitoire. Resumen. Se ha elaborado un estudio de perímetros de protección en la ciudad de Sturgeon Bay (Wisconsin, Estados Unidos) que demuestra la necesidad de combinar análisis detallados hidroestratigráficos con modelos numéricos para delimitar las zonas que contribuyen a los pozos de producción municipal en un acuífero de dolomitas fracturadas. Se combinó un modelo numérico (MODFLOW) con un código de seguimiento de partículas (MODPATH) para simular el sistema regional de aguas subterráneas y para delimitar las áreas de captura de los pozos municipales. El modelo hidroestratigráfico incluía fracturas horizontales y verticales y zonas de alta permeabilidad. Mediante correlación de las interpretaciones estratigráficas con diversos datos de campo, tales como perfiles geofísicos, ensayos con obturadores y identificación de

Rayne, Todd; Bradbury, Kenneth; Muldoon, Maureen

2001-09-01

406

'Everybody knows', but the rest of the world: the case of a caterpillar-borne reproductive loss syndrome in dromedary camels observed by Sahrawi pastoralists of Western Sahara  

PubMed Central

Background The traditional knowledge of local communities throughout the world is a valuable source of novel ideas and information to science. In this study, the ethnoveterinary knowledge of Sahrawi pastoralists of Western Sahara has been used in order to put forward a scientific hypothesis regarding the competitive interactions between camels and caterpillars in the Sahara ecosystem. Methods Between 2005 and 2009, 44 semi-structured interviews were conducted with Sahrawi pastoralists in the territories administered by the Sahrawi Arab Democratic Republic, Western Sahara, using a snow-ball sampling design. Results Sahrawi pastoralists reported the existence of a caterpillar-borne reproductive loss syndrome, known locally as duda, affecting their camels. On the basis of Sahrawi knowledge about duda and of a thorough literature review, we built the hypothesis that: 1) caterpillars of the family Lasiocampidae (genera Lasiocampa, Psilogaster, or Streblote) have sudden and rare outbreaks on Acacia treetops in the Western Sahara ecosystem after heavy rainfall; 2) during these outbreaks, camels ingest the caterpillars while browsing; 3) as a consequence of this ingestion, pregnant camels have sudden abortions or give birth to weaklings. This hypothesis was supported by inductive reasoning built on circumstantiated evidence and analogical reasoning with similar syndromes reported in mares in the United States and Australia. Conclusions The possible existence of a caterpillar-borne reproductive loss syndrome among camels has been reported for the first time, suggesting that such syndromes might be more widespread than what is currently known. Further research is warranted to validate the reported hypothesis. Finally, the importance of studying folk livestock diseases is reinforced in light of its usefulness in revealing as yet unknown biological phenomena that would deserve further investigation. Resumen ‘Todos lo saben’, menos el resto del mundo: el caso de un síndrome de pérdida reproductiva en dromedarios transmitido por orugas y observado por pastores nómadas saharauis del Sáhara Occidental. Antecedentes Los conocimientos tradicionales de las comunidades locales de todo el mundo son una valiosa fuente de nuevas ideas e información para la ciencia. En este estudio, se utilizaron los conocimientos de etnoveterinaria de pastores saharauis del Sáhara Occidental con el fin de proponer una hipótesis científica sobre las interacciones competitivas entre los camellos y las orugas en el ecosistema del Sáhara. Métodos Entre los años 2005 y 2009, se realizaron 44 entrevistas semi-estructuradas a los pastores saharauis en los territorios administrados por la República Árabe Saharaui Democrática, Sáhara Occidental, mediante un diseño de muestreo por bola de nieve. Resultados Los pastores nómadas saharauis describieron un síndrome reproductivo transmitido por orugas, llamado duda, entre sus camellas. Sobre la base de los conocimientos saharauis sobre el duda y una revisión literaria exhaustiva, se propuso la siguiente hipótesis: 1) brotes esporádico de orugas de la familia Lasiocampidae (géneros Lasiocampa, Psilogaster o Streblote) en árboles de Acacia se pueden presentar después de fuertes lluvias en el ecosistema del Sáhara Occidental; 2) durante estos brotes, los camellos ingieren las orugas durante el pastoreo; 3) como consecuencia de esta ingestión, se producen abortos repentinos o partos de crías debilitadas. Apoyamos esta hipótesis mediante razonamiento inductivo basado en evidencia circunstancial y razonamiento analógico con síndromes similares en yeguas de los Estados Unidos y Australia. Conclusiones Este es el primer reporte de la posible existencia de un síndrome de pérdida reproductiva en camellos, transmitido por orugas. Se insinúa que estos síndromes son más comunes que lo que actualmente se conoce. Se sugieren investigaciones adicionales p

2013-01-01

407

Monitoring artificially stimulated fluid movement in the Cretaceous Dakota aquifer, western Kansas  

NASA Astrophysics Data System (ADS)

Aquifer properties can be evaluated by monitoring artificially stimulated fluid movements between wells, if the fluid is heated. Changes in the temperature profile recorded in observation wells indicate the flow path of the heated fluid, which in effect acts as a tracer. A fluid-flow experiment in the Cretaceous Dakota Formation at the Hodgeman County site, west-central Kansas, demonstrated the advantage of using the distributed optical-fiber temperature sensing method for monitoring transient temperature conditions in this hydrological application. The fluid flow in the aquifer was increased by producing water from a pumping well and injecting heated water in an injection well 13 m (43 ft) distant from the pumping well. The time-temperature series data obtained and compared with results from previous pumping tests point to interwell heterogeneity of the aquifer and to a zone in the sandstone aquifer of high hydraulic conductivity. However, the experiment would have allowed further clarification of aquifer heterogeneity and thermal properties if at least one observation well had been present between the injection and production wells. Résumé. Les caractéristiques d'un aquifère peuvent être évaluées en effectuant un suivi des mouvements du fluide stimulés artificiellement entre des puits, si le fluide est chauffé. Les variations de profils de température enregistrés dans les puits d'observation donnent des informations sur les directions d'écoulement du fluide chauffé, qui en fait se comporte comme un traceur. Réalisée dans la formation crétacée de Dakota, sur le site du Comté de Hodgeman (centre-ouest du Kansas), une expérience a démontré l'intérêt d'utiliser la méthode de détection distribuée de température par fibres optiques pour suivre les variations de température dans cette application hydrologique. L'écoulement du fluide dans l'aquifère a été favorisé en extrayant de l'eau par pompage et en injectant de l'eau chaude dans un puits d'injection distant de 13 m du puits de pompage. La chronique de température obtenue et comparée aux résultats d'essais de pompage précédents fait apparaître l'hétérogénéité de l'aquifère entre les puits et l'existence d'une zone de forte conductivité hydraulique dans l'aquifère de grès. Toutefois, l'expérience aurait fourni des éclaircissements supplémentaires sur l'hétérogénéité de l'aquifère et sur ses propriétés thermiques si au moins un puits d'observation avait été placé entre le puits d'injection et le puits de pompage. Resumen. Se puede evaluar las propiedades de un acuífero mediante la observación del movimiento de un fluido, calentado artificialmente, entre pozos. Los cambios registrados en el perfil de temperatura de los pozos de observación indican la trayectoria del fluido calentado, el cual actúa como un trazador. Un experimento de este tipo que se realizó en la formación cretácica de Dakota, en el condado de Hodgeman (porción occidental del centro de Kansas, Estados Unidos de América), demostró la ventaja de utilizar el método del sensor de temperatura con fibra óptica distribuída para medir condiciones transitorias de temperatura en esta aplicación hidrológica. El flujo del fluido en el acuífero aumentó con el bombeo de un pozo y la inyección de agua caliente en otro sondeo, que distaba 13 m (43 pies) del primero. Las series de temperatura obtenidas y comparadas con resultados de ensayos de bombeo previos resaltan la heterogeneidad del acuífero entre ambos pozos, así como la existencia de una zona de elevada conductividad hidráulica en el acuífero de la arenisca. Sin embargo, el experimento habría proporcionado más información sobre la heterogeneidad de la formación y sus propiedades termales si se hubiera dispuesto al menos de un punto de observación entre los pozos de inyección y bombeo.

Macfarlane, Allen; Förster, Andrea; Merriam, Daniel; Schrötter, Jörg; Healey, John

2002-10-01

408

Evolution of potentially eroding events along the northern coast of the Iberian Peninsula  

NASA Astrophysics Data System (ADS)

The anthropogenic global warming is expected to result in a rise in sea-level, accompanied by changes in extreme climate events, such as the frequency and intensity of storms. Such scenario would result in an acceleration of coastal erosion. The aim of the present study is to assess the temporal evolution of potentially eroding events along the northern coast of the Iberian Peninsula during the second half of the 20th century, and to investigate changes in forcing processes such as the frequency and magnitude of storm surges and high wave events. To characterize the potentially eroding events, the total elevation of the water level was selected, being calculated as the sum of the contributions of the average water level, wave run up and the storm surges. Potentially eroding events were identified and quantified following a two-step procedure. Through the first step the potential flood induced by a given storm was estimated by simulating its effects on a theoretical beach profile (intermediate) using an empirical parameterization for extreme run-up approach. The second step consisted on characterizing the maximum storm surge registered during a storm. Those parameters were calculated from hindcasted data (storm surge, wave heights and period, wind speed and direction), retrieved from the SIMAR-44 database (Puertos del Estado), and validated against actual tide gauge measurements and buoy data (RedMar and RedExt networks). Analyses of total water levels showed a long term increase since 1958, resulting from the increase of mean sea level; conversely, a reduction of the frequency and the intensity of the storm events were deduced from the analysis of meteorological records. Since the impact of the storms on macro- and meso- tidal coast closely depend on the tides, a storm impact index was computed taking into account the storm surge magnitude, the wave heights and time duration during which a predefined threshold was exceeded by the sea level. The results are consistent with the analysis of the shoreline evolution on a specific sector of Cantabria (Oyambre) through the comparison of aerial photographs taken between 1957 and 2005. From the late 50´s to late 70’s, the shoreline significantly retreated, in correspondence with the period of maximum storm activity. Conversely, shoreline retreat slowed down during the late 1980s and 1990s while storm activity considerably decreased. Thus long-term coastal erosion, due to the occurrences of high water levels embedded into a long trend term of sea level rise, has been balanced by the reduction of the frequency and intensity of the Atlantic storms. Since relative sea-level will continue rising in the future, most of the coastal morphologies will probably be more frequently reached by the sea, increasing the flooding risk in low-lying sectors and promoting landslides along the cliffs.

Rasilla Álvarez, D.; García Codrón, J. C.

2009-09-01

409

Measurement and evaluation of national family planning programs.  

PubMed

RESUMEN: En los últimos quince años diez paises han inaugurado programas nacionales de planeamiento familiar: India, Pakistán, Corea del Sur, Taiwan, Turquía, Malasia, Ceilán, Túez, la República Arabe Unida, y Marruecos. Otros paises, incluyendo Tailandia, Hong Kong, Singapur, Kenya, Barbados, Trinidad y los Estados Unidos, apoyan y/o estimulan actividades de planeamiento familiar. En la mayor parte de los casos la razón fundamental del programa ha sido que si la tasa de crecimiento poblacional disminuyera, aumentaría la tasa de crecimiento económico.Las metas de largo alcance, expresadas típicamente en términos de reducir las tasa.de de natalidad o de crecimiento, tienen su ejemplo en el propósito de Pakistán de reducir su tasa de crecimiento a 26 para 1970; el de Corea de reducir su tasa de natalidad a 20 para 1971; y el de India de reducir su tasa de natalidad a 25 para 1973.Los objectivos intermedios, que cubren diversos aspectos del pro grama, incluyen metas específicas para un determinado mes a año, considerando personal, la adquisición de anticonceptivos, y el número de usarios por método. Las metas específicas anuales de aceptantes de dispositivos intrauterinos (IUD), para Taiwán, Corea, Túnez, Pakistán e India, son comunes, tanto por la naturaleza del artefacto, como por la facilidad de medición de los que continúan utilizándolos. El programa de evaluación en Taiwán, que trata de medir por diversos medios los efectos inmediatos, mediatos y de largo plazo del programa de planeamiento familiar sirve de modelo. El propósito de la evaiuación de un programa de planeamiento familiar es contribuir a la efectividad y eficiencia del programa, midiendo y analizando su progreso. Las áreas a medir pueden ser clasificadas como- (1) conocimiento acerca de; (2) actitudes hacia; (3) práctica de control de natalidad; y (4) nivel de fecundidad.Un buen sistema de evaluación debería incluir: A. Un buen conjunto de estadísticas de servicio presentadas en formularios estandarizados, en las siguienies formas: 1. Informes nensuales por áreas administrativas, sobre los actuales servicios de planeamiento familiar proporcionados en la actualidad, de carácter permanente o de larga duración (al presente, esterilización y IUD de acuerdo a las siguientes características del receptor: residencia, edad, paridad (número de hijos vivos por sexo), y donde se enteró del programa, si es posible "clase";(probablemente educación de la madre, pero posiblemente ocupación del esposo, ingreso, o equivalente); prácticas anticonceptivas anteriores; intervalo; y deseo de tener más hijos. En un programa grande estos datos pueden obtenerse en base a una muestra. 2. Informes mensuales sobre la distribución de suministros anticonceptivos (condones, píldoras, sustancias efervescentes, etc.), los primeros suministros deben ir acompañados de un registro de las características del recipiente, como anteriormente; los suministros subsecuentes se regietrarán sólo en volumen bruto. Esto también se aplicará al ritmo, donde éste método se enseñe a un número considerable de mujeres. 3. Informes regulares sobre las actividades de planeamiento familiar de médicos privados, como una estimación del efecto catalítico del programa del gobierno sobre ci sector privado. 4. Datos generates mensuales, ppr áreas admirtistrativas importantes, sabre: visitas domiciliarias, reuniones, cuñas radiates y televisadas, avisos en los periódicos y personal que trabaja. 5. Para propósitos de seguimiento una entrevi eta de campo cada 6 a 12 meses a cada N mujer de las listas para (1) y (2) arriba, en un total de 300 o 400, para conocer las tasas de continuación y las razones de abandono (ej: desea otro hijo, insatisfecha can ci método, otras). Las mue.stras podrían ser de 300 cada una, con una supuesta experiencia de 6, 12, 18 y 24 meses. B. Un buen conjunto de datos sobre costa (datos sobre cotos actulaes atribuíbles directamente al programa de planeamiento familiar) fraccionados par áreas principales y cinco a seis

Mauldin, W P

1967-03-01

410

Physical activity and overweight among adolescents on the Texas-Mexico border  

PubMed Central

Objective To investigate differences in associations between physical activity and overweight for students in two adjacent areas on the border between Mexico and the United States of America: students in the city of Matamoros, Mexico, and Mexican-American students in the Lower Rio Grande Valley (LRGV) area of southern Texas. Since the extremely high prevalence of overweight among Mexican-American adolescents is well-recognized, we wanted to determine whether overweight has become a problem among Mexican adolescents. Methods Students from 6 schools (n = 669), representing 12% of the ninth-grade students in Matamoros during 2002-2003, and students from 13 high schools (n = 4 736), representing 22% of the ninth-grade students in the LRGV during 2000-2001, completed questionnaires. Polytomous logistic regression was performed to estimate the risk of being at risk of overweight (?85th percentile to <95th percentile of body mass index (BMI) for age and sex) and the risk of being overweight (?95th percentile of BMI-for-age and sex) versus normal weight associated with measures of physical activity. For simplicity normal weight includes underweight. Results A higher percentage of adolescents in the LRGV were at risk of overweight (17.2%) in comparison with adolescents from Matamoros (14.8%). The percentages of LRGV and Matamoros adolescents who were overweight were identical (16.9%). LRGV adolescent boys (OR = 0.87, 95% CI = 0.77-0.98) who participated in team sports were less likely to be at or above the 85th percentile of BMI-for-age and sex. Although of borderline significance, Matamoros and LRGV adolescent boys who participated in physical education classes were less likely to be at risk of overweight. Neither in Matamoros nor LRGV students were any of the various physical activity categories or levels associated with being at risk of overweight or being overweight. Conclusions Nearly one-third of the students in both Matamoros and the LRGV are at risk of overweight and are overweight. Implementation of interventions on healthful dietary choices and participation in physical education classes and sports teams are essential for reducing the extremely high prevalence of overweight among students on both sides of the Texas/Mexico border. ABSTRACT. Spanish. Objetivo: Investigar si hay diferencias en las asociaciones entre la actividad física y el sobrepeso observadas en estudiantes de dos zonas colindantes en la frontera mexicanoestadounidense: estudiantes de la ciudad de Matamoros, México, y estudiantes mexicanoestadounidenses del valle a lo largo de la desembocadura del Río Bravo (VRB) en la parte sur del estado de Texas. Dada la consabida prevalencia extremadamente alta de sobrepeso en adolescentes mexicanoestadounidenses, los autores queríamos determinar si el sobrepeso también se ha convertido en un problema entre adolescentes mexicanos. Métodos: Estudiantes de 6 escuelas (n = 653), que comprenden 11% de los estudiantes de noveno grado en Matamoros durante 2002–2003, y estudiantes de 13 bachilleratos (n = 4 736), que comprenden 22% de los estudiantes de noveno grado del VRB durante 2000–2001, contestaron cuestionarios. Se llevó a cabo una regresión logística politómica a fin de calcular el riesgo de estar en riesgo de tener sobrepeso (?85.° percentil a <95.° percentil de índice de masa corporal (IMC) para la edad y el sexo) y el riesgo de tener sobrepeso (?95.° percentil de índice de masa corporal (IMC) para la edad y el sexo), frente a un peso normal, que se asociaban con distintos grados de actividad física. En aras de la sencillez, en la clasificación del peso normal también se abarcó la insuficiencia de peso. Resultados: Un mayor porcentaje de adolescentes estaban en riesgo de sufrir sobrepeso en el VRB (17%) que en Matamoros (15%). Los porcentajes de adolescentes de VRB y de Matamoros que tenían sobrepeso fueron idénticos (17%). Los varones adolescentes en el VRB (raz&

Perez, Adriana; Reininger, Belinda M.; Flores, Maria Isabel Aguirre; Sanderson, Maureen; Roberts, Robert E.

2006-01-01

411

Biotransformation of pesticides in saturated-zone materials  

NASA Astrophysics Data System (ADS)

Many studies have been conducted to evaluate pesticide contamination of groundwater in the United States, but investigations of pesticide biotransformation in saturated zones are much less numerous than in surface soils. Because results of studies using soils are not directly applicable to the subsurface, the purpose of this paper is to illustrate examples of pesticide biotransformation in saturated-zone materials. Although it must be considered with caution, the US Environmental Protection Agency's (EPA) "Pesticides in Ground Water Database" was used to focus the discussion on the biotransformation potential of dibromoethane (EDB), atrazine, acetanilide herbicides, and aldicarb, all of which have been detected in groundwater in the United States. Results of more than two dozen studies indicate that a biotransformation potential for these pesticides exists in saturated-zone materials, although for any given pesticide substantial differences in biotransformation occurred. These variations were due both to differences in experimental methods and to heterogeneities in the subsurface materials under investigation. However, because biotransformation mechanisms were not well investigated, it is generally not possible to extrapolate predictions of biotransformation potential beyond the specific sites investigated. These results highlight the need to better understand microbial genetic regulation of biotransformation processes so that genetic information may be effectively incorporated into future investigations of biotransformation potential in the subsurface. Résumé De nombreuses études ont été réalisées pour évaluer le degré de pollution des aquifères par les pesticides aux États-Unis, mais les recherches concernant la biotransformation des pesticides dans les eaux souterraines sont beaucoup moins nombreuses que dans les sols. Du fait que les résultats des études concernant les sols ne sont pas directement applicables au milieu souterrain, le propos de cet article est d'illustrer par des exemples la biotransformation des pesticides dans les nappes. Bien qu'il faille la considérer avec précaution, la base de données sur les pesticides dans les eaux souterraines de l'Agence américaine pour la protection de l'environnement a été utilisée pour centrer la discussion sur le potentiel de biotransformation du dibromoéthane (EDB), de l'atrazine, des désherbants acétanildés et de l'aldicarb, qui tous ont été détectés dans les nappes des États-Unis. Les résultats de plus de deux douzaines d'études indiquent qu'il existe un potentiel de biotransformation de ces pesticides dans les nappes, bien qu'entre chacun de ces pesticides il existe des différences très nettes dans la biotransformation. Ces variations sont en fait dues à la fois à des différences dans les méthodes expérimentales et dans les hétérogénéités dans les matériaux étudiés. Cependant, parce que les mécanismes de la biotransformation ne sont pas bien étudiés, il est en général impossible d'extrapoler les prédictions du potentiel de biotransformation à des sites d'étude spécifiques. Ces résultats soulignent la nécessité de mieux comprendre la régulation génétique microbienne des processus de biotransformation, pour que l'information génétique puisse être efficacement prise en compte dans les futures recherches sur le potentiel de biotransformation dans le sous-sol. Resumen Se han llevado a cabo un gran número de estudios para evaluar la contaminación por pesticidas en los acuíferos de los Estados Unidos de América. Sin embargo, las investigaciones sobre biotransformación de pesticidas en la zona saturada son mucho menos numerosas que en suelos. Como los resultados obtenidos en suelos no son directamente transladables a la zona saturada, el objetivo de este artículo es mostrar ejemplos de biotransformación de pesticidas en la zona saturada. Aunque debe tomarse con cautela, la base de datos "Pesticides in Ground Water Database (Base de Datos de Pesticidas en Aguas Subterráneas)" perteneci

Hoyle, Blythe L.; Arthur, Ellen L.

412

Simulation of regional-scale groundwater flow in the Azul River basin, Buenos Aires Province, Argentina  

NASA Astrophysics Data System (ADS)

A three-dimensional modular model (MODFLOW) was used to simulate groundwater flow in the Azul River basin, Buenos Aires Province, Argentina, in order to assess the correctness of the conceptual model of the hydrogeological system. Simulated heads satisfactorily match observed heads in the regional water-table aquifer. Model results indicate that: (1) groundwater recharge is not uniform throughout the region but is best represented by three recharge rates, decreasing downgradient, similar to the distribution of soils and geomorphological characteristics; and (2) evapotranspiration rates are larger than previous estimates, which were made by using the Thornthwaite-Mather method. Evapotranspiration rates estimated by MODFLOW agree with results of independent studies of the region. Model results closely match historical surface-flow records, thereby suggesting that the model description of the aquifer-river relationship is correct. Résumé Un modèle modulaire tridimensionnel (MODFLOW) a été utilisé pour simuler les écoulements souterrains dans le bassin de la rivière Azul (Province de Buenos Aires, Argentine), dans le but d'évaluer la justesse du modèle conceptuel du système hydrogéologique. La piézométrie simulée s'ajuste de façon satisfaisante à celle observée pour l'ensemble de la nappe. Les résultats du modèle indiquent que: (1) la recharge de la nappe n'est pas uniforme sur toute la région, mais qu'elle est mieux approchée par trois valeurs différentes, décroissant vers l'aval-gradient, en suivant la même distribution que les sols et les caractéristiques géomorphologiques et (2) l'évapotranspiration est nettement plus importante que prévu initialement à partir de la méthode de Thornthwaite-Mather. Les valeurs d'évapotranspiration fournies par MODFLOW concordent bien avec les résultats d'autres études portant sur la région. Les résultats du modèle reproduisent convenablement les chroniques de débit des écoulements de surface, suggérant ainsi que la description par le modèle des relations rivière-nappe est correcte. Resumen Se ha utilizado el modelo MODFLOW, del Servicio Geológico de los Estados Unidos, para simular el flujo de agua subterránea en la cuenca del arroyo del Azul, Provincia de Buenos Aires, Argentina, con el objeto de evaluar el modelo hidrogeológico conceptual. Los niveles hidráulicos simulados ajustan satisfactoriamente con los niveles observados. Los resultados de la simulación indican que: (1) la recarga no es uniforme, sino que puede caracterizarse con tres zonas en las que sus valores decrecen en la medida en que decrece la pendiente, que guarda similitud con la distribución de suelos y características geomorfológicas y (2) la evapotranspiración sería mayor que la estimada en estudios previos, en los que se utilizó el método de Thornthwaite-Mather. La evapotranspiración estimada mediante la presente simulación concuerda con resultados de varios estudios independientes en la región. Respecto de la relación acuífero-río, existe un muy buen ajuste entre los aportes del acuífero al río simulados y los valores históricos de caudal base.

Varni, Marcelo R.; Usunoff, Eduardo J.

413

Management of pest mole crickets in Florida and Puerto Rico with a nematode and parasitic wasp  

SciTech Connect

Non-indigenous invasive mole crickets, Scapteriscus vicinus Scudder (Orthoptera: Gryllotalpidae) in Florida and S. didactylus (Latreille) (the 'changa') in Puerto Rico, are being managed with an entomopathogenic nematode, Steinernema scapterisci (Nguyen and Smart) (Rhabditida: Steinernematidae), and a parasitic wasp, Larra bicolor L. (Hymenoptera: Sphecidae). Pest mole cricket populations have declined by 95% in north central Florida since these specialist natural enemies were released and established in the 1980s. Commercial production of the nematode was initiated, nearly 70 billion were applied in 34 Florida counties, and their establishment, spread, and impact on mole crickets were monitored. The infected mole crickets dispersed the nematode rapidly, so that within 6 months these parasites were present in most of the insects trapped in experimental pastures. Three years later, mole cricket populations were reduced to acceptable levels and the bahiagrass had recovered. The nematode was released for the first time in Puerto Rico during 2001 and has persisted; the wasp was introduced in the late 1930s. The geographical distribution of the wasp is being expanded in Florida and Puerto Rico by planting plots of Spermacoce verticillata (L.), a wildflower indigenous to Puerto Rico and widely distributed in southern Florida. Pastures, sod farms, golf courses, landscapes, and vegetable farms in Florida and Puerto Rico are benefiting from biological control of invasive mole crickets. (author) [Spanish] Los grillotopos invasores no indigenas, Scapteriscus vicinus (Orthoptera: Gryllotalpidae) en el estado de Florida y S. didactylus ('changa') en Puerto Rico, estan siendo manejados por el nematodo entomopathogeno, Steinernema scapterisci (Rhabditida: Steinernematidae) y la avispa parasitica, Larra bicolor (Hymenoptera: Sphecidae). Las poblaciones de los grillotopo plagas han declinado un 95% en el norte central de la Florida desde que estos enemigos naturales especialistas fueron liberados y establecidos en los 80s. Consecuentemente, la produccion comercial del nematodo fue iniciada, casi 70 billones fueron aplicados en 34 condados de la Florida, y se realizo un monitoreo para evaluar su establecimiento, dispersion e impacto sobre los grillotopos. Los gillotopos infectados dispersaron los nematodos rapidamente, tanto que despues de 6 meses estos parasitos estaban presentes en la mayoria de los insectos atrapados en los pastos experimentales. Tres anos despues, las poblaciones de los grillotopos fueron reducidas a niveles aceptables y los campos de pasto 'bahia' se recuperaron. El nematodo fue liberado para la primera vez en Puerto Rico durante del 2001 y ha persistido; la avispa fue introducida al final de los 30s. La distribucion geografica de la avispa se esta extendiendo en la Florida y Puerto Rico por medio de la siembra de parcelas de Spermacoce verticillata, una flor silvestre indigena a Puerto Rico y distribuida ampliamente en el sur de la Florida. Los campos de pasto, las operaciones comerciales de cesped, los campos de golf, los paisajes y las fincas de hortalizas en la Florida y Puerto Rico se estan beneficiando del control biologico de los grillotopos invasores. (author)

Leppla, N.C.; Frank, J.H. [University of Florida, Institute of Food and Agricultural Sciences, Department of Entomology and Nematology, P.O. Box 110630, Gainesville, FL 32611-0630 (United States); Adjei, M.B. [University of Florida, Range Cattle Research and Education Center, 3401 Experiment Station, Ona, FL 33865-9706 (United States); Vicente, N.E. [University of Puerto Rico, Agricultural Experiment Station, P.O. Box 9030, Mayaguez, PR 00681-9030 (Puerto Rico)

2007-03-15

414

The influence of faults in basin-fill deposits on land subsidence, Las Vegas Valley, Nevada, USA  

NASA Astrophysics Data System (ADS)

The role of horizontal deformation caused by pumping of confined-aquifer systems is recognized as contributing to the development of earth fissures in semiarid regions, including Las Vegas Valley, Nevada. In spite of stabilizing water levels, new earth fissures continue to develop while existing ones continue to lengthen and widen near basin-fill faults. A three-dimensional granular displacement model based on Biot's consolidation theory (Biot, MA, 1941, General theory of three-dimensional consolidation. Jour. Applied Physics 12:155-164) has been used to evaluate the nature of displacement in the vicinity of two vertical faults. The fault was simulated as (1) a low-permeability barrier to horizontal flow, (2) a gap or structural break in the medium, but where groundwater flow is not obstructed, and (3) a combination of conditions (1) and (2). Results indicate that the low-permeability barrier greatly enhances horizontal displacement. The fault plane also represents a location of significant differential vertical subsidence. Large computed strains in the vicinity of the fault may suggest high potential for failure and the development of earth fissures when the fault is assumed to have low permeability. Results using a combination of the two boundaries suggest that potential fissure development may be great at or near the fault plane and that horizontal deformation is likely to play a key role in this development. Résumé. On considère que la déformation horizontale provoquée par un pompage dans un aquifère captif joue un rôle dans le développement des fissures du sol en régions semi-arides, comme la vallée de Las Vegas (Nevada). Malgré des niveaux d'eau stabilisés, de nouvelles fissures du sol continuent de se développer en longueur et en largeur au voisinage de failles dans les bassins sédimentaires. Un modèle de déplacement granulaire tri-dimensionnel, basé sur la théorie de la consolidation de Biot (Biot, M A, 1941, General theory of three-dimensional consolidation. Jour. Applied Physics 12:155-164), a été utilisé pour évaluer la nature du déplacement au voisinage de deux failles verticales. La faille a été simulée comme 1) une barrière de faible perméabilité pour l'écoulement horizontal, 2) une rupture structurale dans le milieu, mais sans obstruction de l'écoulement, et 3) une combinaison des deux précédentes conditions. Les résultats indiquent que la barrière de faible perméabilité favorise fortement le déplacement horizontal. Le plan de faille constitue aussi un lieu de subsidence différentielle verticale significative. Les fortes contraintes calculées au voisinage de la faille laissent penser qu'il existe un fort potentiel de rupture et le développement de fissures du sol quand on suppose que la faille possède une faible perméabilité. Les résultats utilisant une combinaison des deux conditions suggèrent que le développement potentiel de fissures peut être grand sur ou à proximité du plan de faille et que la déformation horizontale joue vraisemblablement un rôle clé dans ce développement. Resumen. Se conoce la contribución que la deformación horizontal causada por el bombeo de sistemas acuíferos confinados tienen en el desarrollo de fisuras en regiones semiáridas, como es el caso del Valle de Las Vegas (Nevada, Estados Unidos de América). A pesar de la estabilización de los niveles, se continúa desarrollando nuevas fisuras, mientras las ya existentes se alargan y ensanchan cerca de las fallas de relleno de cuenca. Se ha utilizado un modelo tridimensional de desplazamiento granular basado en la teoría de consolidación de Biot (Biot, M.A., 1941. General theory of three-dimensional consolidation. J. Applied Physics, 12: 155-164) para evaluar la naturaleza del desplazamiento junto a dos fallas verticales. Se ha simulado cada falla como (1) una barrera de baja permeabilidad al flujo horizontal, (2) un hueco o ruptura estructural en el medio pero sin obstrucción al flujo de aguas subterráneas, y (3) una combinación de las dos condiciones anteriores. Los res

Burbey, Thomas

2002-07-01

415

Plan for a groundwater monitoring network in Taiwan  

NASA Astrophysics Data System (ADS)

In Taiwan, rapid economic growth, rising standards of living, and an altered societal structure have in recent years put severe demands on water supplies. Because of its stable quantity and quality, groundwater has long been a reliable source of water for domestic, agricultural, and industrial users, but the establishment of a management program that integrates groundwater and surface-water use has been hampered by the lack of groundwater data. In 1992, the Department of Water Resources (DWR) initiated a program entitled "Groundwater Monitoring Network Plan in Taiwan." Under this program, basic groundwater data, including water-level and water-quality data, are being collected, and a reliable database is being established for the purpose of managing total water resources. This paper introduces the goals, implementation stages, and scope of that plan. The plan calls for constructing 517 hydrogeologic survey stations and 990 groundwater monitoring wells within 17 years. Under this program, water-level fluctuations are continuously monitored, whereas water-quality samples are taken for analysis only at the initial drilling stage and, subsequently, at the time when a monitoring well is being serviced. In 1996, the DWR and the Water Resources Planning Commission were merged to form today's Water Resources Bureau. Résumé A Taïwan, l'expansion économique rapide, l'amélioration des conditions de vie et la transformation de la structure sociale ont provoqué, ces dernières années, une très forte demande en eau. Du fait de sa constance en qualité et en quantité, l'eau souterraine a longtemps été considérée comme une ressource en eau sûre pour les usages domestiques, agricoles et industriels. Mais la mise en place d'un programme de gestion intégrant les utilisations d'eaux souterraines et de surface a été gênée par l'absence de données sur les eaux souterraines. En 1992, le Département des Ressources en Eau a lancé le programme "Plan pour un réseau de suivi des eaux souterraines à Taïwan". D'après ce programme, les données de base concernant les eaux souterraines, comprenant les mesures de niveau et les données de qualité, ont été acquises ; une base de données sûre est en cours d'élaboration, dans le but de gérer l'ensemble des ressources en eau. Cet article présente les buts, les stades de développement et une vue d'ensemble de ce plan. Le plan impose la mise en place de 517 stations de mesures hydrogéologiques et de 990 piézomètres en 17 ans. Selon ce programme, les variations du niveau des nappes doivent être suivies en continu, tandis que des échantillons pour la qualité de l'eau seront prélevés pour analyses uniquement au cours de la phase de foration, puis au moment de la mise en service des piézomètres. En 1996, le Département des Ressources en Eau et la Commission de Planification des Ressources en Eau ont été réunis pour former l'actuel Bureau des Ressources en Eau. Resumen En Taiwan, el rápido crecimiento económico, el aumento en el nivel de vida y los cambios sociales en los últimos años han resultado en un aumento en la demanda de agua. Por su estabilidad en términos de cantidad y calidad, las aguas subterráneas han sido durante años la fuente de agua para usos domésticos, agrícolas e industriales. En los últimos años, sin embargo, el establecimiento de un programa de gestión conjunta de aguas superficiales y subterráneas se ha visto comprometido por la falta de datos correspondientes a estas últimas. En 1992, el Departamento de Recursos de Agua (DWR) inició un programa titulado "Plan de Red de Control de Aguas Subterráneas en Taiwan". Bajo este programa, se están recogiendo datos básicos, incluyendo niveles piezométricos y datos de calidad, y se está construyendo una base de datos con el propósito de gestionar los recursos de agua totales. Este artículo presenta el marco, los objetivos y el estado de implantación del plan, que pretende la construcción de 517 estaciones de medida hidrogeológicas y 990 pozos de obs

Hsu, Shiang-Kueen

416

Establishment of Lipolexis oregmae (Hymenoptera: Aphidiidae) in a classical biological control program directed against the brown citrus aphid (Homoptera: Aphididae) in Florida  

SciTech Connect

The parasitoid Lipolexis oregmae Gahan (introduced as L. scutellaris Mackauer) was imported from Guam, evaluated in quarantine, mass reared, and released into citrus groves in Florida in a classical biological control program directed against the brown citrus aphid, Toxoptera citricida Kirkaldy. Releases of 20,200, 12,100, and 1,260 adults of L. oregmae were made throughout Florida during 2000, 2001, and 2002, respectively. To determine if L. oregmae had successfully established, surveys were conducted throughout the state beginning in the summer of 2001 and continuing through the summer of 2003. Parasitism during 2001 and 2002 was evaluated by holding brown citrus aphids in the laboratory until parasitoid adults emerged. Lipolexis oregmae was found in 10 sites in 7 counties and 4 sites in 3 counties with parasitism rates ranging from 0.7 to 3.3% in 2001 and 2002, respectively. Laboratory tests indicated that high rates of mortality occurred if field-collected parasitized aphids were held in plastic bags, so a molecular assay was used that allowed immature L. oregmae to be detected within aphid hosts immediately after collection. The molecular assay was used in 2003 with the brown citrus aphids and with other aphid species collected from citrus, weeds, and vegetables near former release sites; immatures of L. oregmae were detected in black citrus aphids, cowpea aphids, spirea aphids, and melon aphids, as well as in the brown citrus aphid, in 4 of 8 counties sampled, with parasitism ranging from 2.0 to 12.9%, indicating that L. oregmae is established and widely distributed. Samples taken in Polk County during Oct 2005 indicated that L. oregmae has persisted. The ability of L. oregmae to parasitize other aphid species on citrus, and aphids on other host plants, enhances the ability of L. oregmae to persist when brown citrus aphid populations are low. (author) [Spanish] El parasitoide Lipolexis oregmae Gahan (introducido como L. scutellaris Mackauer) fue importado de Guam, evaluado en cuarentena, criado en masa y liberado en huertos de citricos en un programa de control biologico clasico dirigido contra el afido pardo de citricos, Toxoptera citricida Kirkaldy. Se hicieron liberaciones de 20,200, 12,100, y 1,260 adultos de L. oregmae a traves de la Florida durante los anos de 2000, 2001, y 2002, respectivamente. Para determinar si L. oregmae ha logrado en establecer, se realizaron sondeos a traves del estado empezando en el verano del 2001 y continuando hasta el final del verano del 2003. El parasitismo durante 2001 y 2002 fue evaluado con el mantenimiento de individuos del afido pardo de los citricos en el laboratorio hasta que los adultos emergieron. Lipolexis oregmae fue encontrado en 10 sitios en 7 condados y con tasas de parasitismo en 4 sitios en 3 condados entre 0.7 a 3.3% en el 2001 y 2002, respectivamente. Las pruebas del laboratorio indicaron que las tasas altas de mortalidad fueron posibles si los afidos con parasitos recolectados en el campo fueron mantenidos en bolsas plasticas, entonces un ensayo molecular fue usado con lo que permitio la deteccion de inmaduros de L. oregmae dentro de los hospederos de afidos inmediatamente despues de la recoleccion. El ensayo molecular fue usado en el 2003 con individuos del afido pardo de los citricos y con otras especies de afidos recolectados sobre citricos, malezas y hortalizas cerca de los sitios donde los parasitoides fueron liberados anteriormente; inmaduros de L. oregmae fueron detectados en individuos del afido negro de los citricos, el afido del caupi, el afido spirea y el afido del melon, ademas del afido pardo de los citricos en 4 de los 8 condados muestreados, con la tasa del parasitismo entre 2.0 a12.9%, indicando que L. oregmae estaba estabecido y ampliamente distribuido. Las muestras tomadas en el Condado de Polk durante octobre del 2005 indicaron que L. oregmae ha persistido. La capacidad de L. oregmae para parasitar otras especies de afidos sobre citricos y otros afidos sobre otras plantas hospederas, incrementa la capacidad de L. oregmae para persistir cuand

Persad, A.B.; Hoy, M.A. [Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611-0620 (United States); Ru Nguyen [Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, FL (United States)

2007-03-15