These are representative sample records from Science.gov related to your search topic.
For comprehensive and current results, perform a real-time search at Science.gov.
1

Efecto de los residuos de una industria cer醡ica sobre la contaminaci髇 del suelo Effect of the residuals of a ceramic industry about the contamination of the soil  

Microsoft Academic Search

RESUMEN. El desarrollo de determinadas actividades industriales puede constituir un riesgo moderado de contaminaci髇 ambiental. Dicho riesgo no es solo debido a las emisiones atmosf閞icas sino tambi閚 a mala gesti髇 de sus residuos o un deficiente almacenamiento de las materias primas y productos, que pueden ocasionar fugas de componentes que se acumulan en el suelo. Como consecuencia, puede aparecer un

Ambar Rosa; Guzm醤 Morales; Sael S醤chez El韆s; Eugenio Garc韆 Nieblas

2007-01-01

2

Candidato a Presidente de la Sociedad Internacional de Mecnica de Suelos e Ingeniera Geotcnica ISSMGE  

E-print Network

software, socavaci贸n de puentes, erosi贸n en diques, y con suelos no saturados. Ha desarrollado 13 paquetes in- situ, software de ingenier铆a geot茅cnica, socavaci贸n en puentes, y sobre suelos expansivos internacional sobre diversos temas incluyendo socavaci贸n en puentes, erosi贸n de taludes, estabilidad de las

Briaud, Jean Louis

3

Dehydrogenase activity, redox potential, and emissions of carbon dioxide and nitrous oxide from Cambisols under flooding conditions  

Microsoft Academic Search

Samples from topsoils (0-10 cm) of 16 Polish arable Cambisols developed from different parent materials (sand, silt, sandy gravel, loess, loam and clay), were incubated under flooded conditions with NO3-. Dehydrogenase activity, redox potential (Eh), and emissions of CO2 and N2O were measured. According to dehydrogenase activity, the soils were divided into two groups: those of low activity (I), where

Teresa W?odarczyk; Witold St?pniewski; Ma?gorzata Brzezi?ska

2002-01-01

4

Determinacion de periodos fundamentales del suelo mediante vibraciones ambientales en el municipio de Humacao, Puerto Rico  

NASA Astrophysics Data System (ADS)

La tecnica de Nakamura ha sido utilizada a nivel mundial para determinar periodos fundamentales del suelo. La tecnica consiste en calcular y graficar cocientes espectrales H/V de vibraciones ambientales registradas sobre el suelo. Mediciones de vibraciones ambientales fueron tomadas en 151 lugares dentro del municipio de Humacao, localizado al este de Puerto Rico. Los datos se procesaron utilizando espectros de Fourier y espectros de potencia. La tecnica fue validada al compararla con los resultados de cocientes espectrales H/V de registros de sismos debiles y tambien con una modelacion numerica realizada con datos de un ensayo "downhole". Las graficas de los cocientes espectrales H/V fueron divididas en casos y grupos, los cuales dependen de la facilidad para identificar el periodo fundamental pico y amplitudes en frecuencias menores de 1 Hz, respectivamente. Los resultados obtenidos con ambos espectros fueron comparados y se concluye que los mismos se complementan para proveer resultados mas confiables. Se crearon mapas de periodos fundamentales, factores de amplitud, isoperiodos y clasificacion sismica de sitio. Los mapas de isoperiodos fueron realizados en las zonas mas pobladas sobre depositos de suelo. El mapa de periodos fundamentales del suelo mostro buena correlacion con la geologia local. El mapa de clasificacion sismica derivado de periodos de sitio fue comparado con el mapa de clasificacion sismica derivado de barrenos geotecnicos. El mapa de clasificacion obtenido de periodos puede sobreestimar un poco algunas clasificaciones del suelo. Sin embargo, este mapa puede proveer un estimado aproximado de la velocidad de onda de corte promedio del suelo hasta una profundidad de 100 pies (30 metros).

Cintron Aponte, Rommel

5

Effect of indigenous and introduced vesicular-arbuscular mycorrhizal fungi on growth and phosphorus uptake of Trifolium pratense and on inorganic phosphorus fractions in a cambisol  

Microsoft Academic Search

Five selected vesicular-arbuscular mycorrhizal (VAM) fungi and the native population of a cambisol were tested in sterilized soil conditions, with Trifolium pratense as host plant. Indigenous fungi were the most effective in enhancing plant growth and P uptake, which were correlated with a higher root colonization. Selected fungi did not spread further in the root after 4 months from sowing,

M. J. Sainz; J. Arines

1988-01-01

6

Patchiness and Spatial Distribution of Laccase Genes of Ectomycorrhizal, Saprotrophic, and Unknown Basidiomycetes in the Upper Horizons of a Mixed Forest Cambisol  

Microsoft Academic Search

Decomposition of plant litter by the soil microbial community is an important process of controlling nutrient cycling and\\u000a soil humus formation. Fungal laccases are key players in litter-associated polyphenol degradation, but little is known about\\u000a the diversity and spatial distribution of fungal species with laccase genes in soils. Diversity of basidiomycete laccase genes\\u000a was assessed in a cambisolic forest soil,

Patricia Luis; Harald Kellner; Bettina Zimdars; Uwe Langer; Francis Martin; Fran鏾is Buscot

2005-01-01

7

Suelos, Sal y OsmosisSuelos, Sal y Osmosis Maarten W. Saaltink  

E-print Network

Suelos, Sal y OsmosisSuelos, Sal y Osmosis Maarten W. Saaltink Alejandro Blanco Jes煤s Carrera Toni. sal (kg mol-3) #12;Curva de retenci贸n y osmosis q 驴Usar Pmat o Pmat - Posm? qEn teor铆a osmosis apenas afecta fuerzas capilares q驴C贸mo osmosis afecta fuerzas de adsorci贸n? q Hay que medir ( ) min 1 1 0 minmax

Polit猫cnica de Catalunya, Universitat

8

Phenoxyalkanoic acid herbicide sorption and the effect of co-application in a Haplic Cambisol with contrasting management.  

PubMed

The adsorption and desorption behaviour of two phenoxyalkanoic acid herbicides (MCPA and mecoprop-p) in a Haplic Cambisol with tillage and grassland management was examined using a batch equilibrium method. Additionally, the effect on adsorption of the simultaneous presence of the two herbicides was also studied. The sorption equilibrium was reached within 24h for adsorption and desorption in both soils. The experimental sorption data for MCPA and mecoprop-p fitted the Freundlich and the linear adsorption isotherms very well (R(2)>0.99). The Freundlich exponent values of the adsorption isotherm ranged from 0.91 to 0.98 indicating a non-linear and a linear adsorption of the two chemicals studied. Generally, mecoprop-p showed lower adsorption than MCPA, although the adsorption of both phenoxyalkanoic acid herbicides was low. The adsorption process was not fully reversed during one washing cycle, as the K(f) values for desorption were greater than corresponding K(f) values for adsorption. The Freundlich exponent (1/n) of the MCPA adsorption isotherm was affected by the simultaneous presence of both herbicides and tended more towards non-linearity, whilst the mecoprop-p adsorption exponent remained unaltered. The Freundlich and the linear adsorption coefficients calculated in the mix study were not that different from the adsorption coefficients calculated in the single compound study, and therefore single compound adsorption data can be used when modelling the fate of simultaneously applied phenoxyalkanoic acid herbicides. The study also indicated that both herbicides were poorly sorbed by the soils studied, and therefore may pose a risk of surface and/or groundwater pollution in Ireland. PMID:22959720

Piwowarczyk, Agnieszka A; Holden, Nicholas M

2013-01-01

9

Impact of charcoal waste application on the soil organic matter content and composition of an Haplic Cambisol from South Brazil  

NASA Astrophysics Data System (ADS)

In some regions in Brazil, charcoal is usually applied to the soil with the purpose to improve its fertility and its organic carbon (SOC) content. In Brazil, the use of charcoal waste from steel industry with agronomic purposes represents also an alternative and sustainable fate for this material. In this context, the objective of this work was to evaluate the impact of Eucalyptus charcoal waste application on the SOC content and on the soil organic matter (SOM) composition. Increasing doses of charcoal (0, 10, 20 and 40 Mg ha-1) were applied to an Haplic Cambisol, in Irati, South-Brazil. Charcoal was initially applied on the soil surface, and then it was incorporated at 10 cm with a harrow. Soil undisturbed and disturbed samples (four replicates) were collected in September 2011 (1 y and 9 months) after charcoal incorporation. Four soil depths were evaluated (0-5, 5-10, 10-20 and 20-30 cm) and each replicate was composed by three subsamples collected within each plot. The soil samples were air dried, passed through a 9.51 mm sieve and thereafter through a 2.00 mm sieve. The SOC content and total N were quantified by dry combustion. The SOM was concentrated with fluoridric acid 10% and then the SOM composition was evaluated by thermogravimetric analysis along the soil profile. The main impact of charcoal application occurred at the 0-5 cm layer of the area treated with the highest dose: SOC content increased in 15.5 g kg-1 in comparison to the soil without charcoal application. The intermediary doses also increased the SOC content, but the differences were not significant. No differences for N content were found in this soil depth. Further results were observed in the 10-20 cm soil depth, where the highest dose increased the SOC content and N content. Furthermore, this treatment increased the recalcitrance of the SOM, mainly at the 0-5 cm and 10-20 cm soil layers. No differences between doses of charcoal application were found in the 20-30 cm soil depth, suggesting that the charcoal has not migrated so deep in soil even after almost two years of its incorporation.

dos Anjos Leal, Ot醰io; Pinheiro Dick, Deborah; Cylene Lombardi, K醫ia; Gon鏰lves Maciel, Vanessa

2014-05-01

10

Suelo: human-assisted sensing for exploratory soil monitoring studies  

Microsoft Academic Search

Soil contains vast ecosystems that play a key role in the Earth's water and nutrient cycles, but scientists cannot cur- rently collect the high-resolution data required to fully un- derstand them. In this paper, we present Suelo, an embed- ded networked sensing system designed for soil monitoring. An important challenge for Suelo is that many soil sensors are inherently fragile

Nithya Ramanathan; Thomas Schoellhammer; Eddie Kohler; Kamin Whitehouse; Thomas Harmon; Deborah Estrin

2009-01-01

11

USO DEL TDR EN ENSAYOS DE MOVIMIENTO DE AGUA SOBRE COLUMNAS DE SUELO INALTERADO  

Microsoft Academic Search

Water movement was studied in two low permeability soils using undisturbed soil columns. Soil moisture was measured in several layers of the columns using the TDR technique with two parallel rods horizontally installed as wave guides. Previously to the test, the relationship between dielectric constant (Ka) and volumetric water content (Hv) was calibrated for each horizon of the two soils.

A. L髉ez; P. Crende; A. Castelao

12

COMPACTACI覰 INDUCIDA POR EL TR罭SITO VEHICULAR SOBRE UN SUELO EN PRODUCCI覰 HORT虲OLA  

Microsoft Academic Search

Field tests were carried out with the objective of characterizing the state of compaction in horticultural soil induced by traffic, after the development of a cabbage crop ( Brassica oleracea L. group capitata) cycle, and its incidence on yield. Measurements of penetration resistance, bulk density, and moisture content in soil were made and aeread biomass at the end of the

Antonino Marcelo Terminiello; Roberto Hernan; Jorge Alejandro Claverie; Juan Pablo Casado

13

Relating physical and chemical properties of four different biochars and their application rate to biomass production of Lolium perenne on a Calcic Cambisol during a pot experiment of 79 days.  

PubMed

Three pyrolysis biochars (B1: wood, B2: paper-sludge, B3: sewage-sludge) and one kiln-biochar (B4: grapevine wood) were characterized by determining different chemical and physical properties which were related to the germination rates and to the plant biomass production during a pot experiment of 79 days in which a Calcic Cambisol from SW Spain was amended with 10, 20 and 40 t ha(-1) of the four biochars. Biochar 1, B2 and B4 revealed comparable elemental composition, pH, water holding capacity and ash content. The H/C and O/C atomic ratios suggested high aromaticity of all biochars, which was confirmed by (13)C solid-state NMR spectroscopy. The FT-IR spectra confirmed the aromaticity of all the biochars as well as several specific differences in their composition. The FESEM-EDS distinguished compositional and structural differences of the studied biochars such as macropores on the surface of B1, collapsed structures in B2, high amount of mineral deposits (rich in Al, Si, Ca and Fe) and organic phases in B3 and vessel structures for B4. Biochar amendment improved germination rates and soil fertility (excepting for B4), and had no negative pH impact on the already alkaline soil. Application of B3, the richest in minerals and nitrogen, resulted in the highest soil fertility. In this case, increase of the dose went along with an enhancement of plant production. Considering costs due to production and transport of biochar, for all used chars with the exception of B3, the application of 10 t ha(-1) turned out as the most efficient for the crop and soil used in the present incubation experiment. PMID:25181049

de la Rosa, Jos M; Paneque, Marina; Miller, Ana Z; Knicker, Heike

2014-11-15

14

Mapa de Uso de Suelo de Puerto Rico 2003: Proyecto Xplorah Geographic Mapping Technologies Corp.  

E-print Network

Mapa de Uso de Suelo de Puerto Rico 2003: Proyecto Xplorah Geographic Mapping Technologies Corp Puerto Rico. La meta principal de este sistema es modelar cambios en el uso del terreno en funci髇 de Technologies, Corp. San Juan, Puerto Rico mailto:groman@gmtgis.com (787) 2508182 / (787) 2508185 #12;

Gilbes, Fernando

15

LA ENERG虯 EN LA FORMACI覰 DE LOS SUELOS: ASPECTOS TE覴ICOS Y METODOL覩ICOS PARA SU EVALUACI覰  

Microsoft Academic Search

RESUMEN El suelo es un sistema abierto que tiende hacia un equilibrio din醡ico acumulando y reciclando materia y energ韆 a trav閟 del tiempo. Mediante un balance energ閠ico es posible evaluar la energ韆 acumulada o la que circula a trav閟 de su masa. Esta miscel醤ea tiene por objetivo presentar aspectos te髍icos y metodol骻icos para cuantificar la energ韆 dinamizada durante la formaci髇

AM蒖ICO DEGIOANNI; ESTELA BRICCHI; EUGENIO HAMPP

2008-01-01

16

EFECTOS SOBRE LA CUBIERTA VEGETAL, LA ESCORRENT虯 Y LA EROSI覰 DEL SUELO, DE LA ALTERNANCIA CULTIVO- ABANDONO EN PARCELAS EXPERIMENTALES  

Microsoft Academic Search

SUMMARY Are presented results of the hydrological consequences and soil erosion derivatives from the alternations cultivate-abandonment, obtained in erosion plots of the experi- mental field from The Ardal (Murcia, South-East of Spain). The first results, seem to indicate that in this area, with its special environmental characteristic, the abandonment of cultivation fields, permits an increase in vegetable coverage, grassy annual

Belmonte Serrato; Romero D韆z; L髉ez Berm鷇ez

17

EFECTO DE LA APLICACI覰 DE RESIDUOS ORG罭ICOS SOBRE EL CULTIVO DEL MA蚙 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

18

Informacion sobre la quimioterapia  

Cancer.gov

Provee informaci髇 en quimioterapia para las personas con c醤cer. Incluye preguntas para hacerlas a un doctor o enfermera acerca del tratamiento de quimioterapia y le proporciona un espacio para poner sus respuestas. Incluye informaci髇 sobre los tratamientos cl韓icos.

19

覲TIMO DE COBERTURA VEGETAL EN RELACI覰 A LAS P蒖DIDAS DE SUELO POR EROSI覰 H虳RICA Y LAS P蒖DIDAS DE LLUVIA POR INTERCEPTACI覰  

Microsoft Academic Search

RESUMEN Se establece, en una primera aproximaci髇, el 髉timo de cobertura en funci髇 de las p閞- didas de suelo por erosi髇 h韉rica y de las p閞didas de lluvia por interceptaci髇, en un mato- rral (romeral), en condiciones ambientales semi醨idas mediterr醤eas, con un mismo tipo de suelo y dos tramos de pendiente de ladera, 11% y 25%. Se utiliza el promedio

Belmonte Serrato; Romero D韆z; L髉ez Berm鷇ez; E. Hern醤dez Laguna

20

Hallazgo de Masoniella grisea G. Smith en el suelo de gallineros y comprobaci髇 de su patogenidad para animales de laboratorio  

Microsoft Academic Search

Resumen 1. En el curso del chequeo seriado de muestras de suelo de gallineros, recogidas en el Edo. M閞ida\\/Venezuela y sus alrededores en b鷖queda deHistoplasma capsulatum, se desarroll en los cultivos de h韌ado y bazo de los ratones en m醩 del 25 % de los casos un hongo perteneciente a la especieMasoniella griseaG. Smith.

C. Capretti; K. Salfelder

1961-01-01

21

Incidencia de la calidad del suelo en los beneficios de los agricultores: caso del caf, municipio La Vega  

Microsoft Academic Search

La fertilizaci髇 que realizan los agricultores se hace con el objetivo de mejorar la rentabilidad de un cultivo, a trav閟 del aumento en la productividad, sin embargo, si no se tiene un manejo efectivo de la disponibilidad de nutrientes en el suelo, estas pr醕ticas son ineficientes tanto social como privadamente. Socialmente por los costos medio ambientales generados a trav閟 de

Medina Carranco Nancy

1997-01-01

22

Componentes naturales y de uso del suelo vulnerables a las variaciones del nivel del mar en la costa atl醤tica de M閤ico  

Microsoft Academic Search

Palabras clave Regionalizaci6n de costas, fislografia, vulnerabilidad costera, uso del suelo Abs鷄ct Geomorphological alaradenstia of the mastal iongitudinal prn* and the arrangwent of the physiographical stmcture allowed the rmnition of two zonas: a) the intertidai zone -a basic sntne for dired imoaci of sea leve1 dame: and b) an adjacent peritid醠 (supralittoral) hnge &n area of cushioning or of polential

Mano Arturo; Ortiz P閞ez; Ana Patricia; M閚dez Linares

23

SOIL PHYSICAL PROPERTIES UNDER DIFFERENT MANAGEMENT SYSTEMS AND ORGANIC MATTER EFFECTS ON SOIL MOISTURE ALONG SOIL CATENA IN SOUTHEASTERN NIGERIA (PROPIEDADES FISICAS DE SUELOS CON DIFERENTES SISTEMAS DE MANEJO Y EFECTO DE LA MATERIA ORGANICA SOBRE LA HUMEDAD DEL SUELO EN UNA CATENA DE SUELOS DEL SURESTE DE NIGERIA)  

Microsoft Academic Search

SUMMARY Some physical properties of the soils under different management systems were determined along a soil catena of three soil series found in Eastern Nigeria. The objective was to determine the effects of management-induced changes on the soil physical properties. Soil samples were taken from three depths (0-20, 20-40 and 40-60 cm) and on three management units made up of

C. A. Igwe

2005-01-01

24

Evaluaci髇 de creencias sobre ciencia, tecnolog韆 y sus relaciones mutuas  

Microsoft Academic Search

En este art韈ulo se eval鷄n las creencias de una amplia muestra de estudiantes sobre los conceptos de ciencia, tecnolog韆 y sus relaciones mutuas, utiliz醤dose para ello nueve preguntas incluidas en el Cuestionario de Opiniones sobre Ciencia, Tecnolog韆 y Sociedad (COCTS). Los resultados muestran algunas ideas aceptables sobre la ciencia, mientras que la tecnolog韆 se identifica sobre todo con sus productos

Olleros Gregorio

2005-01-01

25

Avances en el estudio sobre la estrongiloidosis  

Microsoft Academic Search

Resumen La estrongiloidosis es una infecci髇 parasitaria de am- plia distribuci髇 mundial, sobre todo en zonas tropicales y sub-tropicales. Strongyloides tiene varias especies de las cuales Strongyloides stercolaris y Strongyloides fulleborni son las 鷑icas que tienen importancia en el hombre. S. stercolaris es un helminto de predominio in- testinal, aunque puede diseminarse y producir elevada mortalidad en individuos inmunosuprimidos. Estas

Ana L. Ruano; Teresa Mart韓; Javier Pardo; Julio L髉ez-Ab醤; Antonio Muro

26

O casamento entre pessoas do mesmo sexo. Sobre \\  

Microsoft Academic Search

O artigo constitui uma primeira reflex鉶 sobre dados de uma pesquisa realizada em Barcelona. O debate p鷅lico sobre o casamento entre pessoas do mesmo sexo revela as tens鮡s sociais em torno do g閚ero, da sexualidade, da conjugalidade, da procria玢o e da parentalidade. As representa珲es simb髄icas e os discursos ideol骻icos sobre estes campos v阤m revelado o seu car醕ter constru韉o no momento

MIGUEL VALE DE ALMEIDA

2006-01-01

27

Sobre el poder, fatal, de la llegenda  

Microsoft Academic Search

Catal:<\\/b> Reflexi sobre l'impacte de l'acc閟 dels Borja al poder pontifici i pol韙ic en general, com a origen de la llegenda creada al voltant de la fam韑ia.\\u000aEnglish:<\\/b> Reflections on the impact of Borgia's papacy and political enpowerment upon the origin of the black legend constructed around their family.\\u000aItaliano:<\\/b> Riflessione sull'impatto dell'accesso dei Borgia al potere pontificio e politico

Joan F. Mira

2009-01-01

28

CUBIERTAS VEGETALES EN VI袳DOS: COMPORTAMIENTO DE MEZCLAS DE LEGUMINOSAS FORRAJERAS ANUALES Y EFECTOS SOBRE LA FERTILIDAD DEL SUELO Cover crops in vineyards: performance of annual forage legume mixtures and effects on soil fertility  

Microsoft Academic Search

A B S T R A C T With the objective of evaluating and selecting cover crops to improve soil management in vineyards (Vitis vinifera L.) cv. Cabernet Sauvignon, five cover pastures were evaluated: a) control without vegetation; b) control with spontaneous vegetation; c) legume mixture of early maturing cultivars of subterranean clover (Trifolium subterraneum L.) and burr medic (Medicago

Carlos Ovalle; Alejandro del Pozo; Arturo Lav韓; Juan Hirzel

2007-01-01

29

Bibliografa bsica, webs y blogs sobre mujer e islam  

E-print Network

Bibliograf韆 b醩ica, webs y blogs sobre mujer e islam: [La bibliograf韆 y las referencias en Internet sobre mujer e islam es ampl韘ima. Aqu solo presentamos unos pocos t韙ulos. ] - L. Abu-Lughod (ed, 1996, - L. Ahmed, Women and gender in Islam: historical roots of a modern debate, New Haven: Yale

Escolano, Francisco

30

Lo que usted necesita saber sobre el c醤cer de c閞vix  

Cancer.gov

Contiene informaci髇 sobre las opciones de tratamiento, la obtenci髇 de una segunda opini髇, los cuidados de seguimiento y las fuentes de apoyo para alguien que ha sido diagnosticado recientemente con c醤cer de c閞vix o cuello uterino.

31

Water infiltration and hydraulic conductivity in sandy cambisols: impacts of forest transformation on soil hydrological properties  

Microsoft Academic Search

Soil hydrological properties like infiltration capacity and hydraulic conductivity have important consequences for hydrological\\u000a properties of soils in river catchments and for flood risk prevention. They are dynamic properties due to varying land use\\u000a management practices. The objective of this study was to characterize the variation of infiltration capacity, hydraulic conductivity\\u000a and soil organoprofile development on forest sites with comparable

Oliver Bens; Niels Arne Wahl; Holger Fischer; Reinhard F. H黷tl

2007-01-01

32

Simulating transport of nitrogen and phosphorus in a Cambisol after natural and simulated intense rainfall  

NASA Astrophysics Data System (ADS)

Intense rainfall adversely affects agricultural areas, causing transport of pollutants. Physically-based hydrological models to simulate flows of water and chemical substances can be used to help decision-makers adopt measures which reduce such problems. The purpose of this paper is to evaluate the performance of SWAP and ANIMO models for simulating transport of water, nitrate and phosphorus nutrients, during intense rainfall events generated by a simulator, and during natural rainfall, on a volumetric drainage lysimeter. The models were calibrated and verified using daily time series and simulated rainfall measured at 10-minute intervals. For daily time-intervals, the Nash-Sutcliffe coefficient was 0.865 for the calibration period and 0.805 for verification. Under simulated rainfall, these coefficients were greater than 0.56. The pattern of both nitrate and phosphate concentrations in daily drainage flow under simulated rainfall was acceptably reproduced by the ANIMO model. In the simulated rainfall, loads of nitrate transported in surface runoff varied between 0.08 and 8.46 kg ha- 1, and in drainage form the lysimeter, between 2.44 and 112.57 kg ha- 1. In the case of phosphate, the loads transported in surface runoff varied between 0.002 and 0.504 kg ha- 1, and in drainage, between 0.005 and 1.107 kg ha- 1. The use of the two models SWAP and ANIMO shows the magnitudes of nitrogen and phosphorus fluxes transported by natural and simulated intense rainfall in an agricultural area with different soil management procedures, as required by decision makers.

Kaufmann, Vander; Pinheiro, Adilson; Castro, Nilza Maria dos Reis

2014-05-01

33

Simulating transport of nitrogen and phosphorus in a Cambisol after natural and simulated intense rainfall.  

PubMed

Intense rainfall adversely affects agricultural areas, causing transport of pollutants. Physically-based hydrological models to simulate flows of water and chemical substances can be used to help decision-makers adopt measures which reduce such problems. The purpose of this paper is to evaluate the performance of SWAP and ANIMO models for simulating transport of water, nitrate and phosphorus nutrients, during intense rainfall events generated by a simulator, and during natural rainfall, on a volumetric drainage lysimeter. The models were calibrated and verified using daily time series and simulated rainfall measured at 10-minute intervals. For daily time-intervals, the Nash-Sutcliffe coefficient was 0.865 for the calibration period and 0.805 for verification. Under simulated rainfall, these coefficients were greater than 0.56. The pattern of both nitrate and phosphate concentrations in daily drainage flow under simulated rainfall was acceptably reproduced by the ANIMO model. In the simulated rainfall, loads of nitrate transported in surface runoff varied between 0.08 and 8.46 kg ha(-1), and in drainage form the lysimeter, between 2.44 and 112.57 kg ha(-1). In the case of phosphate, the loads transported in surface runoff varied between 0.002 and 0.504 kg ha(-1), and in drainage, between 0.005 and 1.107 kg ha(-1). The use of the two models SWAP and ANIMO shows the magnitudes of nitrogen and phosphorus fluxes transported by natural and simulated intense rainfall in an agricultural area with different soil management procedures, as required by decision makers. PMID:24650647

Kaufmann, Vander; Pinheiro, Adilson; Castro, Nilza Maria dos Reis

2014-05-01

34

SOBRE LA DEFINICION DE KTEORIA ALGEBRAICA Pere Pascual Gainza  

E-print Network

Universitat Polit`ecnica de Catalunya Diagonal 647, 08028 Barcelona 25/07/96 Indice Introducci'on. 1. El grupo no se pretende dar un panorama bibliogr'afico sobre la K 璽eor'ia. Estas notas tienen su origen en

Polit鑓nica de Catalunya, Universitat

35

Hoja informativa sobre la calidad del aire interior  

E-print Network

promover la salud y la calidad de vida mediante la prevenci贸n y el control de las enfermedades, lasHoja informativa sobre la calidad del aire interior La mala calidad del aire interior proviene de de uso dom茅stico como limpiadores y pesticidas C贸mo mejorar la calidad del aire interior 路 Abra las

36

Tesis de Licenciatura Sobre el trabajo no publicado  

E-print Network

Tesis de Licenciatura Sobre el trabajo no publicado de Alan M.Turing "A note on normal numbers Esta tesis est麓a basada en el manuscrito no publicado de Alan Turing titulado "A note on normal numbers #12;1. Introducci麓on En este trabajo hacemos una revisi麓on del manuscrito de Alan M. Turing titu- lado

Becher, Ver贸nica

37

Lo que usted necesita saber sobre el c醤cer de seno  

Cancer.gov

Contiene informaci髇 sobre las opciones de tratamiento, los diferentes m閐icos que tratan el c醤cer de seno, la obtenci髇 de una segunda opini髇, los cuidados de seguimiento y las fuentes de apoyo para alguien que ha sido diagnosticado recientemente con c醤cer de seno.

38

Efectos de las fusiones sobre el mercado financiero colombiano  

Microsoft Academic Search

Este trabajo examina los efectos de las fusiones en el sistema ban- cario sobre la eficiencia del sistema y los precios. Se encuentra que los bancos que han atravesado procesos de fusiones pueden experimentar mejoras en los indices de eficiencia en beneficios. Estas mejoras en eficiencia fueron superiores para aquellos bancos que presentaban rankings de eficiencia m醩 bajos antes de

Dairo Estrada

2005-01-01

39

Myotis mystacina en Galicia PRIMEROS DATOS SOBRE EL MURCILAGO  

E-print Network

Myotis mystacina en Galicia 41 PRIMEROS DATOS SOBRE EL MURCI?LAGO BIGOTUDO Myotis mystacina primera vez la presencia del Murci茅lago Bigotudo, Myotis mystacina, en Galicia (No- roeste de Espa帽a). Un. Palabras clave: distribuci贸n, Galicia, Murci茅lago Bigotudo, Myotis mystacina, Pen铆nsula Ib茅rica

Gal谩n, Pedro

40

Un estudio sobre el uso de algoritmos geneticos multimodales  

E-print Network

Un estudio sobre el uso de algoritmos geneticos multimodales para seleccion de caractersticas J propuestas de algoritmos geneticos multimodales pa- ra seleccion de caractersticas como etapa de reduc- cion. La ex- perimentacion realizada muestra la adecuacion de es- te tipo de algoritmos geneticos para el

Granada, Universidad de

41

Consideraciones sobre la funci髇 de inversi髇 en Espa馻  

Microsoft Academic Search

En este art韈ulo se realiza un estudio detenido del modelo para la inversi髇 estimado por Andr閟 et al. (1990). Dicha estimaci髇 contiene filtros racionales con ra韈es complejas que producen respuestas oscilantes ante variaciones de tipo impulso sobre las variables explicativas. Se detecta que tal caracter韘tica de los filtros se debe a que las oscilaciones en la inversi髇 ocurridas en los

Antoni Espasa; Eva Senra

42

ENCUESTA DE FEN覯ENOS PARAPSICOL覩ICOS EN BRASIL: COMENTARIOS SOBRE \\  

Microsoft Academic Search

Res鷐en.- Este art韈ulo consiste en un comentario sobre la encuesta de fen髆enos ps韖uicos en Brasil recientemente publicada por Zangari y Machado (1996). La encuesta puede considerarse como un trabajo pionero en Am閞ica Latina. El estudio contribuye a nuestros conocimientos en t閞minos de la incidencia de los reportes de fen髆enos, la fenomenolog韆 de las experiencias, la comparaci髇 con fen髆enos de los

Carlos S. Alvarado

43

Epidemiologia lesional en un club d'hoquei sobre herba  

Microsoft Academic Search

Objectiu: Descriure la incid鑞cia, la severitat, el tipus i la distribuci anat騧ica de les lesions en un club d'hoquei sobre herba espanyol durant 3 temporades consecutives (2002-03, 2003-04 i 2004-05). Material i m鑤odes: Es van recopilar retrospectivament totes les lesions esdevingudes en els equips de divisi d'honor, mascul i femen, integrats ambd髎 per un total de 18 jugadors i jugadores.

Daniel Medina Leal; Luciana Moiz Arcone; Javier Yanguas Leyes; Arturo Bros Men閚dez; Bel閚 Sim髇 Lobera

2007-01-01

44

Nobel da Medicina em debate sobre a importncia da cincia  

E-print Network

Nobel da Medicina em debate sobre a import芒ncia da ci锚ncia lisboa O Nobel da Medicina e atual presidente da Royal Society (a cong茅nere brit芒nica da Acade- mia das Ci锚ncias) , Paul Nurse, est谩 hoje em Lisboa para falar de ci锚n- cia e da forma como ela pode ser eficaz e imprescind铆vel nas socie- dades

Instituto de Sistemas e Robotica

45

Informaci髇 sobre el c醤cer para hispanos y latinos  

Cancer.gov

Cada vez m醩 estadounidenses sobreviven al c醤cer y contin鷄n llevando vidas productivas. Sin embargo, muchos hispanos y latinos en los Estados Unidos no han escuchado este mensaje, y no se han beneficiado de los adelantos en los campos de la detecci髇 temprana y el tratamiento. El nuevo sitio web del Instituto Nacional del C醤cer, http://www.cancer.gov/espanol, lanzado el d韆 2 de abril de 2007, comunica en閞gicamente el mensaje de que el c醤cer puede prevenirse y tratarse, y ofrece, adem醩, informaci髇 sobre todos los aspectos de la enfermedad.

46

Reflexi髇 bio閠ica sobre el uso de organismos gen閠icamente modificados  

PubMed Central

El presente art韈ulo reflexiona desde los 4 principios de la bio閠ica el uso comercial de organismos gen閠icamente modificados. Se cuestiona fundamentalmente la falta de transferencia de tecnolog韆 entre el mundo desarrollado y en desarrollo y el que el presente sistema de patentamiento de organismos vivos modificados fomenta intereses comerciales y no da debida importancia al desarrollo sostenible de la agricultura y ganader韆 en los pa韘es en desarrollo, donde m醩 se necesita. Se reflexiona sobre la importancia que tiene evaluar los riesgos antes de introducirse en el mercado organismos gen閠icamente modificados y la necesidad de regulaci髇 en los pa韘es. PMID:21927675

Yunta, Eduardo Rodr韌uez

2011-01-01

47

NOTAS TAXON覯ICAS SOBRE EL G蒒ERO VALERIANELLA MILL. (VALERIANACEAE) PARA LA FLORA IB蒖ICA  

Microsoft Academic Search

RESUMEN. Notas taxon髆icas sobre el g閚ero Valerianella Mill. (Valerianaceae) para la Flora Ib閞ica. Sobre la base de estudios experimentales que han puesto de manifiesto que Valerianella coronata y V. pumila no son sino dos morfotipos de una misma especie, que difieren fundamentalmente en caracteres carpol骻icos, se plantea la hip髏esis de que igual sucede en el caso de V. locusta V.

Juan Antonio DEVESA; Josefa L覲EZ; Ra鷏 GONZALO

2005-01-01

48

UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO UNIVERSITRIO DE ESTUDOS E PESQUISAS SOBRE DESASTRES  

E-print Network

1 UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO UNIVERSIT脕RIO DE ESTUDOS E PESQUISAS SOBRE 2005. #12;2 UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO UNIVERSIT脕RIO DE ESTUDOS E PESQUISAS SOBRE utilizado como crit茅rio de avalia莽茫o para conclus茫o de curso na especializa莽茫o da Universidade Federal de

49

Mineria de datos sobre grafos: un enfoque multiobjetivo aplicado a bioremediacion  

E-print Network

Miner磇a de datos sobre grafos: un enfoque multiobjetivo aplicado a bioremediaci磑n J. Zaiat1 and R subdividirlo en varias submol磂culas inocuas. La miner磇a de datos resulta entonces una herramienta muy 磚til para resolver este problema, sin embargo existen pocos trabajos sobre miner磇a de datos aplicada

Granada, Universidad de

50

Influence of land use on organic carbon pool and chemical properties of Vertic Cambisols in central and southern Italy  

Microsoft Academic Search

Land use strongly influences soil properties and unsuitable practices lead to degradation of soil and environmental quality. The aim of this study was to assess the impact of different land uses on some chemical properties of soils developed from Pliocene clays, within hilly environments of central and southern Italy. The areas investigated are located in Vicarello di Volterra (Pisa, Tuscany),

R. Papini; G. Valboa; F. Favilli; G. L扐bate

2011-01-01

51

Nitrification and acidification from urea application in red soil (Ferralic Cambisol) after different long-term fertilization treatments  

Technology Transfer Automated Retrieval System (TEKTRAN)

Purpose. Long-term manure applications can prevent or reverse soil acidification by chemical nitrogen (N) fertilizer. However, the resistance to re-acidification from further chemical fertilization is unknown. The aim of this study was to examine the effect of urea application on nitrification and a...

52

NCI Anuncia Contribuciones para Incrementar Acceso de Minor韆s a Informaci髇 sobre el C醤cer  

Cancer.gov

El Instituto Nacional del C醤cer (NCI) anunci este mes una variedad de contribuciones que totalizan casi 1 mill髇 de d髄ares para ayudar a desarrollar la investigaci髇 y programas para comprender y finalmente romper la Divisi髇 Digital que existe en muchas poblaciones minoritarias para el acceso y uso de la informaci髇 sobre el c醤cer disponible en la Internet. Las contribuciones son un esfuerzo del Servicio de Informaci髇 sobre el C醤cer (CIS), dependiente de la NCI, para trabajar con grupos y organizaciones regionales para el control del c醤cer para probar estrategias destinadas a aumentar las comunicaciones sobre el c醤cer en comunidades deficientemente atendidas

53

Algunas Reflexiones sobre el Rol que Deberia Cumplir la Informatica en la Escuela  

E-print Network

a docentes, responsables de las pol麓iticas educativas y p麓ublico en general. 1. 驴Por qu麓e la inform麓aticaAlgunas Reflexiones sobre el Rol que Deber麓ia Cumplir la Inform麓atica en la Escuela Pablo L. De N麓iculo, motivado por algunas discusiones en las que he participado sobre la inform麓atica en la escuela; y en

De N谩poli, Pablo Luis

54

ACTUALIDADES SOBRE LA EPIDEMIOLOGA DE LA ENFERMEDAD DE CHAGAS EN MXICO  

E-print Network

85 ACTUALIDADES SOBRE LA EPIDEMIOLOG脥A DE LA ENFERMEDAD DE CHAGAS EN M?XICO J.M. RAMSEY, R. ORDO?EZ, A.TELLO LOPEZ, J.L. POHLS, V. SANCHEZ, A.T. PETERSON* INTRODUCCI?N La Enfermedad de Chagas es la epidemiol贸gicos sobre la mortalidad por Chagas, debido a la falta de experiencia en la elaboraci贸n del diagn贸stico

Hammerton, James

55

La Naturaleza Contradictoria de las Peliculas Hechas en Mexico Sobre la Revolucion Mexicana  

E-print Network

LA NATURALEZA CONTRADICTORIA DE LAS PEL?CULAS HECHAS EN M?XICO SOBRE LA REVOLUCI?N MEXICANA A Thesis by ALEX STEVE GARZA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF ARTS August 2010 Major Subject: Modern Languages LA NATURALEZA CONTRADICTORIA DE LAS PEL?CULAS HECHAS EN M?XICO SOBRE LA REVOLUCI?N MEXICANA A Thesis by ALEX STEVE GARZA Submitted...

Garza, Alex Steve

2010-10-12

56

Uma Aula Prtica sobre LISP Siang Wun Song -Universidade de So Paulo -IME/USP  

E-print Network

Uma Aula Pr谩tica sobre LISP Siang Wun Song - Universidade de S茫o Paulo - IME/USP MAC 5710 - Estruturas de Dados - 2008 Siang Wun Song - Universidade de S茫o Paulo - IME/USP Uma Aula Pr谩tica sobre LISP. Coletor de lixo faz parte do sistema. Siang Wun Song - Universidade de S茫o Paulo - IME/USP Uma Aula

Song, Siang Wun

57

Ascosporas de Monosporascus cannonballus en Suelo  

Microsoft Academic Search

Analysis of different types of sugar in the extraction method of ascospores of Monosporascus cannonballus in soil The objective of this work was to test different kinds of sugar for the extraction of ascospores of M. cannonballus. The ascospores of this ascomycete involved in melon (Cucumis melo) collapse can be recovered from soil by a physical method using a gradient

Rui Sales Junior; Roberto Beltr醤; Sami J. Michereff; Josep Armengol; Jos Garc韆-Jim閚ez; 蓃ika Valente de Medeiros

58

O que bil韓gues bimodais t阭 a nos dizer sobre desenvolvimento bil韓gue?  

PubMed Central

O objetivo deste trabalho apresentar o que as pesquisas que estamos desenvolvendo com crian鏰s ouvintes, filhas de pais surdos, adquirindo L韓gua Brasileira de Sinais (Libras) e Portugu阺 e L韓gua de Sinais Americana (ASL) e Ingl阺 (Lillo-Martin et al. 2010) t阭 a nos dizer sobre desenvolvimento bil韓gue. Os dados deste estudo fazem parte de um banco de dados de intera珲es espont鈔eas coletadas longitudinalmente, alternando contextos de aquisi玢o da Libras e do portugu阺 como l韓gua alvo, no Brasil e dados coletados longitudinalmente. nos mesmos contextos, de crian鏰s adquirindo ASL e ingl阺1. Al閙 disso, h tamb閙 dados do estudo experimental com testes aplicados nos dois pares de l韓guas que se agregam ao presente estudo. Uma vis鉶 geral dos estudos desenvolvidos sobre a aquisi玢o bil韓gue bimodal por crian鏰s ouvintes, filhas de pais surdos, ser apresentada e, ent鉶, ser鉶 expostos alguns aspectos lingu韘ticos deste tipo de aquisi玢o, considerando as discuss鮡s sobre aquisi玢o bil韓gue a partir da pesquisa realizada. PMID:24431480

de Quadros, Ronice M黮ler; Lillo-Martin, Diane; Pichler, Deborah Chen

2013-01-01

59

Discussions about the Nature of Science in a Course on the History of Astronomy. (Spanish Title: Discusiones sobre la Naturaleza de la Ciencia en un Curso sobre Historia de la Astronom韆.) Discuss鮡s sobre a Natureza da Ci阯cia em um Curso sobre a Hist髍ia da Astronomia  

NASA Astrophysics Data System (ADS)

There are an increasing number of researches in science education that affirm the importance of discussions on the "nature of science" in basic education level as well as in teacher training. The history of science applied to education is a way to contextualize epistemological discussions, allowing both the understanding of scientific content and learning about science concepts. We present some reasonably consensual definitions on the nature of science that have been widely discussed by the academic community. We show also some episodes in the history of astronomy which can lead to discussions involving some aspects of the nature of science, and how they can do it. Hay un n鷐ero creciente de investigaciones en la ense馻nza de las ciencias que afirman la importancia de debates sobre la "naturaleza de la ciencia" en la educaci髇 b醩ica y formaci髇 del profesorado. La historia de la ciencia aplicada a la educaci髇 es una manera de contextualizar los debates de la epistemolog韆, lo que permite tanto la comprensi髇 de los contenidos cient韋icos como el aprendizaje de conceptos cient韋icos. En esto trabajo, presentamos algunas definiciones bastante consensuales sobre la naturaleza de la ciencia que han sido ampliamente discutidas por la comunidad acad閙ica y mostramos c髆o algunos episodios en la historia de la astronom韆 pueden llevar a discusiones sobre algunos aspectos de la naturaleza de la ciencia. H um n鷐ero crescente de pesquisas na 醨ea de ensino de ci阯cias que afirmam a import鈔cia de discuss鮡s sobre a "natureza da ci阯cia" na educa玢o b醩ica e na forma玢o de professores. A hist髍ia da ci阯cia aplicada ao ensino uma maneira de contextualizar discuss鮡s epistemol骻icas, permitindo tanto a compreens鉶 de conte鷇os cient韋icos quanto o aprendizado de no珲es sobre as ci阯cias. Neste trabalho apresentamos algumas defini珲es razoavelmente consensuais sobre a natureza da ci阯cia que foram amplamente discutidas pela comunidade acad阭ica e mostramos como alguns epis骴ios da hist髍ia da astronomia podem levar a discuss鮡s envolvendo alguns dos aspectos da natureza da ci阯cia.

Pires de Andrade, Vict髍ia Fl髍io; L'Astorina, Bruno

2010-07-01

60

Oficina Nacional de Control Interno -ONCI Dcimo Informe de Evaluacin Sobre la Marcha de UN-SIMEGE  

E-print Network

Calidad 颅 SGC, Modelo Est谩ndar de Control Interno 颅 MECI y el Sistema de Desarrollo Administrativo1 de 22 Oficina Nacional de Control Interno -ONCI D茅cimo Informe de Evaluaci贸n Sobre la Marcha de Sostenibilidad OFICINA NACIONAL DE CONTROL INTERNO DECIMO INFORME DE EVALUACI?N SOBRE LA MARCHA 颅 UN-SIMEGE Fase

Prieto, Germ谩n A.

61

Desenvolvimento de game multi-mouse sobre o Bioma Mata Atlntica Ana Beatriz Bahia Cristina Santos Emlio Takase  

E-print Network

-mouse, edutainment, Mata Atl芒ntica, serious game, colabora莽茫o, educa莽茫o. Contatos dos autores: abbahiaDesenvolvimento de game multi-mouse sobre o Bioma Mata Atl芒ntica Ana Beatriz Bahia Cristina Santos aborda o processo de desenvolvimento de um game educativo e colaborativo sobre o Bioma Mata Atl芒ntica

Floeter, Sergio Ricardo

62

INFLU蔔CIA DE DIFERENTES CLASSES DE INFESTA敲O POR MANCHA P赗PURA SOBRE O VIGOR DE SEMENTES DE SOJA  

Microsoft Academic Search

RESUMO: O trabalho prop魋-se a analisar a influ阯cia de diferentes classes de infesta玢o por mancha p鷕pura (Cercospora kikuchii) no tegumento das sementes de tr阺 cultivares de soja, sobre o vigor de pl鈔tulas no munic韕io de Dourados - MS. O experimento foi conduzido na Embrapa Agropecu醨ia Oeste, em outubro de 2006. As classes de infesta玢o foram determinadas visualmente e classificadas em

LUCIANO DOS; REIS VENTUROSO; MARCO ANT訬IO SEDREZ; F罛IO R蒅IS DE SOUZA; ANDERSON CRISTIAN BERGAMIN; LENITA APARECIDA CONUS

63

Anlisis de textos sobre interacciones entre protenas1 Protein-Protein Interaction text analysis  

E-print Network

entre prote铆nas (PPI) es una de las 谩reas de investigaci贸n m谩s importantes en el campo de las celular, conocida la aparici贸n de determinadas prote铆nas. La descripci贸n de experimentos sobre PPI es el

Pla, Ferran

64

Los debates sobre pobreza urbana y segregaci髇 social en Estados Unidos  

Microsoft Academic Search

Se estudia la evoluci髇 hist髍ica de la idea de pobreza urbana en los EEUU. Se parte de las aportaciones pioneras de finales de siglo XIX, centr醤dose, en un primer apartado, en las consideraciones de la sociolog韆 urbana de la Escuela de Chicago y, tambi閚, en los an醠isis iniciales sobre los problemas de hacinamiento y de habitaci髇 barata. Un segundo apartado

Joan Vilagrasa

2007-01-01

65

Visiones alternativas sobre racionalidad en los debates en Ciencia y Tecnologa. Mara Virginia Elisa Ferroi  

E-print Network

epist茅mica se ha entendido tambi茅n como "fundamento o base para aceptar o rechazar una creencia, para elegir permite a los seres humanos de carne y hueso tener creencias y evaluar los fundamentos que tengan a favor o en contra de esas creencias". (Oliv茅. 1995. P谩g. 91) Independientemente de las divisiones sobre el

Paris-Sud XI, Universit茅 de

66

Regulaci髇 ambiental sobre la contaminaci髇 vehicular en Colombia: 縣acia donde vamos?  

Microsoft Academic Search

El gran aumento de los niveles de contaminaci髇 del aire constituye en la actualidad uno de los problemas m醩 importantes que afronta la sociedad en general, dado su impacto negativo sobre el medio ambiente y la calidad de vida. A nivel internacional se est醤 implementando variadas medidas de pol韙ica ambiental 梚nstrumentos econ髆icos en el sector transporte con el fin de

David Tob髇 Orozco; Andr閟 Felipe S醤chez Gandur; Maria Victoria C醨denas Londo駉

2006-01-01

67

ESTUDIO SOBRE LA IMPLEMENTACI覰 DE REDES NEURONALES ARTIFICIALES USANDO XILINX SYSTEM GENERATOR  

Microsoft Academic Search

En este trabajo se realiza un estudio sobre la implementaci髇 de redes neuronales artificiales tipo feedforward y en espec韋ico de tipo perceptr髇 en un FPGA usando Xilinx System Generator (XSG). El objetivo principal es ofrecer al usuario una alternativa mediante una interfaz gr醘ica de usuario que combina MATLAB, Simulink y XSG para desarrollar redes neuronales tipo feedforward, as como estudiar

Juan Carlos Moctezuma Eugenio; C閟ar Torres Huitzil

68

Estela Bartol y Lucia Chamanadjian (eds.) Actas del Coloquio Internacional sobre la Enseanza de  

E-print Network

Estela Bartol y Lucia Chamanadjian (eds.) Actas del Coloquio Internacional sobre la Ense帽anza de Bartol Mart铆n, Universit茅 de Montr茅al Francisco J. Lloro Javierre, Centro de Recursos del Espa帽ol Lucia

Parrott, Lael

69

Tutorial sobre o uso de Geotecnologias no estudo de Bacias Hidrogrficas para professores da Educao Bsica  

E-print Network

Tutorial sobre o uso de Geotecnologias no estudo de Bacias Hidrogr醘icas para professores da of hydrographic basing degradation, a tutorial was developed for secondary school teachers to use in environmental education and other environmentally-based subjects. This tutorial gives them the possibility of performing

70

I JORNADAS SOBRE TRASTORNO DE DFICIT DE ATENCIN CON/SIN HIPERACTIVIDAD. CONOCIENDO EL  

E-print Network

I JORNADAS SOBRE TRASTORNO DE D?FICIT DE ATENCI?N CON/SIN HIPERACTIVIDAD. CONOCIENDO EL TDAH PARA alumnos que presentan TDAH tienen capacidad para adquirir nuevos conocimientos, pero su dificultad radica. "Conociendo el TDAH": Origen, signos de alerta, diagn贸stico, evaluaci贸n, tratamiento. Ponente: Dra. Mara

Rey Juan Carlos, Universidad

71

Gua breve sobre la La anemia es un trastorno de la sangre. La sangre es  

E-print Network

Anemia Gu韆 breve sobre la La anemia es un trastorno de la sangre. La sangre es un l韖uido esencial de anemia, como la anemia por deficien- cia de hierro, la anemia perniciosa, la anemia apl醩ica y la anemia hemol韙ica. Los distintos tipos de anemia tienen relaci髇 con diversas enfermedades y problemas de

Bandettini, Peter A.

72

Una reflexi髇 sobre la econom韆 del desarrollo y el desarrollo econ髆ico  

Microsoft Academic Search

El objetivo del presente ensayo es efectuar una discusi髇, ciertamente en forma breve, sobre los principales paradigmas del desarrollo, contraponer sus tesis centrales y evaluar sus alcances frente a los hechos que pretenden explicar e interpretar. Originalmente este trabajo se present como ponencia en el 11 Congreso de Economistas de la Universidad Nacional, a finales de 1981. A partir de

Luis Bernardo Fl髍ez

1984-01-01

73

CONVOCATORIA DE ARTCULOS CONFERENCIA DE LAS NACIONES UNIDAS SOBRE COMERCIO Y DESARROLLO  

E-print Network

CONVOCATORIA DE ART虲ULOS CONFERENCIA DE LAS NACIONES UNIDAS SOBRE COMERCIO Y DESARROLLO Y. El grupo est compuesto por expertos en Derecho y Econom韆 de renombre internacional, inversores discusi髇 internacional y que ser sometido a los gobiernos para observaciones adicionales, la UNCTAD y la

Autonoma de Madrid, Universidad

74

SOBRE O PROCESSO DE MEDIA敲O SOCIAL NOS PROJETOS DE DESENVOLVIMENTO: UMA REFLEX肙 TE覴ICA  

Microsoft Academic Search

A media玢o social um tema que nos 鷏timos anos vem ganhando espa鏾 nas discuss鮡s sobre o desenvolvimento rural, mais especificamente, nas quest鮡s referentes interven玢o para o desenvolvimento. Este processo compreende uma rela玢o que se apresenta como uma 搗ia de m鉶 dupla, ou seja, a via representa a rela玢o, uma das m鉶s os mediadores, e a outra

Cidonea Machado Deponti; Jalcione Almeida

2008-01-01

75

El Internet como fuente de informaci髇 sobre la salud: la visi髇 de estudiantes de Andaluc韆, Espa馻.  

PubMed

El Internet (la red para usuarios de computadora) puede ser una herramienta 鷗il para adolescentes y j髒enes en la b鷖queda y uso de informaci髇 sobre la salud. Las razones para ello han sido descritas en diversos estudios, sin embargo la confianza en la informaci髇 disponible en el Internet es variable y persisten necesidades de alfabetizaci髇 para su uso. Tanto el sistema de salud como el educativo pueden desempe馻r un papel fundamental para el asesoramiento de la materia. Es necesario conocer las opiniones que tienen los estudiantes de educaci髇 secundaria y de universidad en Andaluc韆, Espa馻, sobre la relaci髇 entre el Internet y la salud, el concepto de salud y la imagen que proyecta el Internet y el 'social media' (medios o redes sociales electr髇icos) con relaci髇 a la juventud y su salud. Hemos desarrollado un estudio, usando t閏nicas de etnograf韆 virtual: hemos consultado a 55 estudiantes de ense馻nza secundaria en foros virtuales y a 21 estudiantes universitarios en video entrevistas semi-estructuradas. Los estudiantes aportaron un concepto de salud integral, relacionado con los h醔itos de salud f韘ica y emocional, y con los activos o factores positivos para la salud. Exponen una visi髇 cr韙ica de la utilidad del Internet para la salud, y sobre la calidad y credibilidad de los contenidos de salud en el Internet, manifestando la necesidad de tener asesoramiento y alfabetizaci髇. Presentan una opini髇 alternativa, m醩 positiva que la visi髇 que se da en social media e Internet sobre sus estilos de vida, y sugieren desarrollar al Internet como herramienta para potenciar la conversaci髇 participativa y el aprendizaje en salud. La metodolog韆 empleada en este estudio puede contribuir a probar nuevas formas de investigaci髇 y acci髇 en futuros trabajos sobre la salud con adolescentes y j髒enes en Internet. PMID:25024275

Garc韆, Mariano Hern醤; C醨denas, Silvia Toro; Pi馻n, Olga Leralta; Trigueros, Marina P閞ez; Campos, Raquel Carrasco; Gonz醠ez, Carmen Lineros

2015-03-01

76

Departamento de Matematicas Matematicas (CC. Quimicas) Ejercicios sobre funciones elementales, limites y continuidad 2.  

E-print Network

Departamento de Matem碼ticas Matem碼ticas (CC. Qu磇micas) Ejercicios sobre funciones elementales, l://www2.uah.es/fsegundo/BioEstad/14-15/000-CursoEstadistica-bn.pdf El resultado es a) Y = 0,1461 X + 0磑mo instalarlo, consulta el documento http://www2.uah.es/fsegundo/BioEstad/14-15/Tutorial-00.pdf). Copia los

77

EFECTOS DE LA MORFINA Y EL HALOPERIDOL SOBRE LA CONDUCTA AGON蚐TICA EN RATONES MACHO  

Microsoft Academic Search

La morfina y el haloperidol son considerados f醨macos antiagresivos, existien- do numerosas evidencias de que el sistema dopamin閞gico media muchos efectos de los opi醕eos, especialmente sus acciones reforzantes. En este estudio se compara el efecto que sobre la conducta agresiva, utilizando el modelo de agresi髇 inducida por aislamiento, presentan dosis bajas tanto de haloperidol (0.1 mg\\/kg) como de morfina (1.25

Marta Rodr韌uez-Arias; Jos Mi馻rro L髉ez

1996-01-01

78

Conferencia de Consenso sobre la braquiterapia en c醤cer de mama en estadios iniciales  

Microsoft Academic Search

Resumen牋Existe una controversia desde hace d閏adas sobre el papel de la sobredosis despu閟 de la radioterapia externa en el tratamiento\\u000a conservador de c醤cer de mama inicial. En el caso de comparar la supervivencia y el control local de un tratamiento conservador\\u000a frente a la mastectom韆, existen en la literatura 5 estudios randomizados15 y un metaan醠isis6 que demuestran que la radioterapia

F. Guedea; L. Arribas; F. Casquero; C. Cinos; V. Crispin; A. Gracia; J. L. Guinot; I. Monteiro-Grillo; V. Munoz; J. Pera; A. Polo; L. Linares; H. Marsiglia; J. J. Mazeron

2003-01-01

79

Premissas hist髍ico-socioculturais sobre a fam韑ia brasileira em fun玢o do sexo e da idade  

Microsoft Academic Search

Resumo Segundo a abordagem etnopsicol骻ica, as premissas hist髍ico-socioculturais, que constituem cren鏰s inquestion醰eis consensualmente aceitas por um grupo social, desempenham papel chave na compreens鉶 do comportamento individual. Apoiando-se nessa perspectiva, investigou-se a influ阯cia do sexo e idade no grau de ades鉶 a premissas sobre a fam韑ia brasileira. A amostra compreendeu 393 sujeitos de ambos os sexos, distribu韉os em quatro faixas et醨ias,

Eveline Maria Leal Assmar; Maria Cristina Ferreira; Heliane Novaes; Mariana Tomaz

2000-01-01

80

Observaciones sobre la Anatom韆 Patol骻ica, Patog閚esis y Evoluci髇 de la Paracoccidioidomicosis  

Microsoft Academic Search

Resumen En base de una revisi髇 cr韙ica de 161 biopsias y de 36 autopsias de paracoccidioidomicosis se llega a una serie de conclusiones que no coinciden con la opini髇 oficial actual de los textos micol骻icos conocidos sobre esta enfermedad:a)Las manifestaciones m醩 frecuentes org醤icas de la paracoccidioidomicosis son las pulmonares y las suprarrenales.b)Las formas pulmonares juegan en nuestro material un papel

K. Brass

1969-01-01

81

Sobre a atividade p髎-peri閘ica do cometa de 髍bita parab髄ica Yanaka (1988r)  

NASA Astrophysics Data System (ADS)

Greenberg, Singh & de Almeida (ApJ, 414: L45-48, 1993) mostraram que a defici阯cia nas abund鈔cias observadas de C2 e CN no Cometa Yanaka (1988r) pode ser explicada em termos das propriedades dos seus componentes refrat醨ios org鈔icos, al閙 do fato que trata-se de um cometa dinamicamente novo, observado atrav閟 de abertura de fenda pequena projetada muito pr髕imo do n鷆leo. Neste trabalho, complementamos o estudo sobre a atividade deste cometa de 髍bita parab髄ica, atrav閟 da determina玢o da lei de pot阯cia que exprime sua taxa de produ玢o de H2O (o principal indicador de atividade) na fase p髎-peri閘ica, determinamos o raio nuclear efetivo m韓imo com sua fra玢o de 醨ea ativa e analisamos a emiss鉶 de part韈ulas de poeira observadas no cont韓uo em 625,0 nm.

de Almeida, A. A.; Sanzovo, G. C.; Boczko, R.

2003-08-01

82

Tend阯cias De Teses e Disserta珲es Sobre Educa玢o em Astronomia No Brasil  

NASA Astrophysics Data System (ADS)

Apresentam-se os resultados de uma pesquisa do tipo estado da arte sobre teses e disserta珲es defendidas no Brasil e relativas ao ensino de Astronomia, com objetivo de identificar essa produ玢o e conhecer as principais tend阯cias da pesquisa nesse campo. Foram localizadas 13 disserta珲es de mestrado e 3 teses de doutorado, as quais foram estudadas em fun玢o dos seguintes aspectos: isntitui玢o, ano de defesa, n韛el escolar abrangido no estudo, foco tem醫ico do estudo e g阯ero de trabalho acad阭ico. Pretende-se assim colaborar com a divulga玢o ampla da produ玢o acad阭ica na 醨ea. Ao mesmo tempo o estudo possibilita, a partir de investiga珲es decorrentes, apontar as contribui珲es dessa produ玢o para o ensino e sinalizar com necessidades a serem supridas por futuras pesquisas.

Bretones, Paulo Sergio; Megid Neto, Jorge

2005-07-01

83

Aprobado por el Consejo de Gobierno de 28 de Febrero de 2014 Normativa sobre conducta acadmica de la Universidad Rey Juan Carlos  

E-print Network

1/10 Aprobado por el Consejo de Gobierno de 28 de Febrero de 2014 Normativa sobre conducta Carlos tienen el deber de ajustar su conducta a las disposiciones legales vigentes que les son de, ha acordado aprobar la siguiente normativa sobre conducta acad茅mica, que ser谩 de aplicaci贸n a los

Rey Juan Carlos, Universidad

84

Estudos sobre religi鉶 e sa鷇e mental realizados no Brasil: hist髍ico e perspectivas atuais Brazilian studies on religion and mental health: history and current perspectives  

Microsoft Academic Search

Resumo Contexto: H mais de um s閏ulo, v醨ios pesquisadores brasileiros t阭 estudado as rela珲es entre religiosidade e transtornos mentais, mas estes trabalhos s鉶 pouco conhecidos atualmente. Objetivos: apresentar um panorama e uma an醠ise cr韙ica da produ玢o sobre sa鷇e mental e religi鉶 no Brasil. M閠odos: an醠ise das pesquisas de relev鈔cia hist髍ica, assim como investiga珲es contempor鈔eas sobre o tema sa鷇e mental e

PAULO DALGALARRONDO

85

Theoria 49: 107-114, 2004. Apuntes sobre la vida y la obra de Georg Henrik von Wright*  

E-print Network

Theoria 49: 107-114, 2004. Apuntes sobre la vida y la obra de Georg Henrik von Wright* (Georg Henrik von Wright. In Memoriam) Daniel GONZ罫EZ LAGIER BIBLID [0495-4548 (2004) 19: 49; pp. 107-114] I Georg Henrik von Wright naci en Helsinki el 14 de Junio de 1916 y falleci en esa misma ciudad el 16 de

Machery, Edouard

86

NCI en el congreso de ASCO: Breve rese馻 de los resultados de investigaciones sobre c醤ceres en mujeres  

Cancer.gov

En el congreso anual de la Sociedad Americana de Oncolog韆 Cl韓ica (ASCO) 2014 celebrado en junio en Chicago, se destacaron los resultados de varios estudios cl韓icos patrocinados por el NCI sobre c醤ceres en la mujer. En su conjunto, estos resultados representan avances importantes en nuestra comprensi髇 de c髆o tratar estas enfermedades y mejorar las vidas de quienes se ven afectadas por ellas.

87

Programa de informacin y educacin sobre alimentacin y nutricin Los procesos propios del ser humano requieren un suministro continuo de  

E-print Network

Programa de informaci贸n y educaci贸n sobre alimentaci贸n y nutrici贸n Los procesos propios del ser existentes, sirven como energ铆a o para incorporar y hacer funcionar las estructuras del ser humano. Conviene ingerirlos. Es un proceso consciente y voluntario, y por lo tanto susceptible de ser modificado por el

Escolano, Francisco

88

Conocimientos, concepciones err髇eas y lagunas de los maestros sobre el trastorno por d閒icit de atenci髇 con hiperactividad  

Microsoft Academic Search

Este estudio se dise耋 para analizar los conocimientos, concepciones err髇eas y lagunas sobre el Tras- torno por D閒icit de Atenci髇 con Hiperactividad (TDAH) de 193 maestros, como una replicaci髇 de un estudio realizado por Sciutto, Terjesen y Bender en el a駉 2000. Los maestros cumplimentaron el Knowledge of Attention Deficit Hyperactivity Disorder (KADDS) en su versi髇 espa駉la, adaptada por los

Sonia Jarque Fern醤dez; Ra鷏 T醨raga M韓guez; Ana Miranda Casas

2007-01-01

89

El seminario consta de dos partes: Una primera parte (terica) sobre la Optimizacin delTDA-H desde una  

E-print Network

manera pr谩ctica,tutorizada por un profesional en ejercicio especialista enTDAH.III Seminario sobre realizaci贸n de ambos, llevar谩 a la inclusi贸n en un grupo de colaboradores con formaci贸n espec铆fica enTDAH: 路 AnalizarlarealidaddelossujetosconTDAH,desdesuprimera infancia hasta la entrada en la edad adulta

Escolano, Francisco

90

Qualidade de vida: consideraes sobre os indicadores e instrumentos de medida Quality of life: consideration of indicators and measurement instruments  

E-print Network

Qualidade de vida: considera珲es sobre os indicadores e instrumentos de medida Quality of life Brasil evertonando@hotmail.com Resumo Os instrumentos de medida s鉶 desenvolvidos para as mais diversas importantes que permeiam a utiliza玢o dos instrumentos de medida e apresentar de forma sistematizada os

Boyer, Edmond

91

Efectos de la uni髇 monetaria sobre el comercio internacional: elementos de juicio iniciales de la Uni髇 Monetaria Europea  

Microsoft Academic Search

(Disponible en idioma ingl閟 鷑icamente) En este trabajo calculamos los efectos iniciales de la Uni髇 Monetaria Europea (UME) en el comercio internacional. Empleamos un conjunto de datos de panel que incluye la informaci髇 m醩 actualizada sobre el comercio internacional de 22 pa韘es desarrollados, desde 1992 hasta 2002. Durante ese per韔do, 12 pa韘es europeos se incorporaron formalmente a una uni髇 monetaria.

Alejandro Micco; Ernesto H. Stein; Guillermo Luis Ordo馿z

2003-01-01

92

Cuestionario avanzado sobre Open Access y repositorios institucionales [Jos Luis Chiara, Instituto de Qumica Orgnica General (IQOG-CSIC)  

E-print Network

en marcha del repositorio institucional Digital.CSIC es una buena noticia para la comunidadCuestionario avanzado sobre Open Access y repositorios institucionales [Jos Luis Chiara, Instituto del NIH y otros organismos p鷅licos, fundaciones e instituciones de hacer libremente accesibles los

93

Los latinos deben conocer el servicio de informaci髇 gratuita y confidencial sobre el c醤cer: 1-800-4-CANCER  

Cancer.gov

El Instituto Nacional del C醤cer (NCI) puede ayudarle a resolver sus preguntas por tel閒ono, en ingl閟 y en espa駉l, sin ning鷑 costo para usted. Cuando usted llama al 1-800-422-6237 (1-800-4-CANCER), un servicio gratis y confidencial del NCI, un especialista en informaci髇 est listo y dispuesto a ayudarle y se tomar todo el tiempo necesario para responder a las preguntas que usted tenga sobre el c醤cer.

94

Estudio sobre las dosis de radiaci髇 y los riesgos de c醤cer causados por la prueba at髆ica 揟rinity realizada en 1945  

Cancer.gov

El NCI tiene planeado realizar entrevistas en profundidad para determinar cu醠 era la alimentaci髇 caracter韘tica de las poblaciones ind韌enas americanas, hispanas (latinas) y chicanas que viv韆n en New Mexico a mediados de 1940 y utilizar informaci髇 f醕ilmente disponible sobre la alimentaci髇 y el estilo de vida de las poblaciones blancas. Estas entrevistas representan un paso importante para hacer estimaciones de las dosis de radiaci髇 generadas por la prueba Trinity.

95

IRD Sige, 44, boulevard de dunkerque 13572 Marseille cedex 02 Conferncia das Naes Unidas sobre o desenvolvimento sustentvel  

E-print Network

tripartite sobre a luta contra a desertifica莽茫o na 脕frica. Os pesquisadores do IRD organizar芒o tamb茅m cerca de dez eventos durante a confer锚ncia, participando dos debates cient铆ficos. Luta contra desenvolvimento cient铆fico e tecnol贸gico 颅 CNPq) desejam promover a luta contra a desertifica莽茫o na 脕frica

96

DE ENTRE LOS OLVIDADOS DE SIEMPRE, LA RESISTENCIA Y LAS VOCES NUEVAS, ORGANIZACIN Y ALTERNATIVAS: 10 CONCEPTOS SOBRE LOS NUEVOS MOVIMIENTOS SOCIALES.  

E-print Network

: movimientos sociales, identidades, autonom韆, redes, horizontalidad, diversidad, multiculturalidad: 10 CONCEPTOS SOBRE LOS NUEVOS MOVIMIENTOS SOCIALES. Tatiana COLL LEBEDEFF Universidad Pedag骻ica movimientos sociales o nuevos sujetos de la acci髇 social, muchos de ellos comparten un conjunto de

Boyer, Edmond

97

Tend阯cias de teses e disserta珲es sobre ensino de astronomia no Brasil  

NASA Astrophysics Data System (ADS)

Neste trabalho s鉶 apresentados os resultados de uma pesquisa do tipo estado da arte sobre teses e disserta珲es defendidas no Brasil e relativas ao ensino de Astronomia. Teve por objetivo identificar essa produ玢o e conhecer as principais tend阯cias da pesquisa nesse campo. O procedimento inicial consistiu de um levantamento bibliogr醘ico junto ao Centro de Documenta玢o em Ensino de Ci阯cias (CEDOC) da Faculdade de Educa玢o da UNICAMP e ao Banco de Teses da CAPES dispon韛el na Internet. Foram localizadas 13 disserta珲es de mestrado e 3 teses de doutorado, as quais foram estudadas em fun玢o dos seguintes aspectos: institui玢o, ano de defesa, n韛el escolar abrangido no estudo, foco tem醫ico do estudo e g阯ero de trabalho acad阭ico. Deste conjunto de pesquisas, 13 (81,3%) delas foram defendidas a partir da segunda metade dos anos 90, indicando uma preocupa玢o mais recente com temas relativos ao ensino de Astronomia no conjunto da produ玢o acad阭ica em programas de p髎-gradua玢o no Brasil. Verificou-se que 43,7% dos trabalhos foram produzidas na USP e 18,8% na UNICAMP. Quanto ao n韛el escolar abrangido nos estudos, predominaram os estudos direcionados ao Ensino Fundamental de 5a a 8a s閞ies (62,5%). No que diz respeito ao foco tem醫ico das pesquisas, as principais tend阯cias voltaram-se: 56,3% para Conte鷇o e M閠odo; 43,8% para Concep珲es do Professor; 37,5% para Curr韈ulo e Programas; 37,5% para Recursos Did醫icos. Quanto ao g阯ero de trabalho acad阭ico, verificou-se que 43,8% s鉶 de Pesquisa Experimental e 31,3% de Pesquisa de An醠ise de Conte鷇o. Estudos de revis鉶 bibliogr醘ica como este visam colaborar com a divulga玢o ampla da produ玢o acad阭ica em determinada 醨ea, tra鏰ndo algumas de suas tend阯cias. Ao mesmo tempo possibilita, a partir de investiga珲es decorrentes, apontar as suas contribui珲es para o ensino e sinalizar com necessidades a serem supridas por futuras pesquisas.

Bretones, P. S.; Megid Neto, J.

2003-08-01

98

Sistema de Labranza y Productividad de los Suelos  

Microsoft Academic Search

In this Chapter we discuss the effect of tillage on the physical, chemical and biological properties of the soil.The intensification of agriculture using traditional crop tillage practices involving the inversion of the upper soil layer, decreases de soil organic matter content. No-tillage practices, leaving the crop residues on top of the soil, increase the soil organic matter content positively affecting

E. ACEVEDO; Y E. MART蚇EZ

99

MOVIMIENTO SUPERFICIAL DE FOSFORO EN SUELOS DE LA PAMPA ONDULADA  

Microsoft Academic Search

There is a lack of local information on overland movement of phosphorus fractions associated with the effects of rainfall and\\/or irrigation. The aim of the present investigation was to quantify the particulated and dissolved fractions generated and transported by drop impacts and runoff. Simu- lated high energy rainfall was applied to microplots containing disturbed and fertilized bare top- soils from

C I CHAGAS; R S LAVADO; C A REVILLA; G J MACIAS

100

Suelo: Human-assisted Sensing for Exploratory Soil Monitoring Studies  

E-print Network

and animal depends on soil ecosystems for nutrients, food, and water. Permission to make digital or hard in the Ganges Delta continue to drink groundwater that is dangerously contaminated with arsenic, in what

Kohler, Eddie

101

An醠isis bibliom閠rico sobre el Aprendizaje Basado en Problemas (ABP) en la educaci髇 superior a partir de la base de datos ERIC  

Microsoft Academic Search

El estudio bibliom閠rico descriptivo que sigue presenta tendencias de investigaci髇 sobre el aprendizaje basado en problemas entre 1974 y 2009. Se sirve de la base de datos ERIC y trabaja con una muestra de 1007 documentos. Se analizan los registros a tenor de cuatro variables: el a駉 de publicaci髇 o realizaci髇, la titulaci髇, el 醨ea de conocimiento y la tipolog韆

Jos Luis Men閚dez Varela; Eva Gregori Giralt; Guillem Antequera Gallego

2010-01-01

102

Sobre ci阯cia e moral no sentido de Nietzsche: por uma pol韙ica da verdade On Science and Morals in Nietzsche's Sense: towards a politics of truth  

Microsoft Academic Search

A tradi玢o plat鬾ica compreendeu a rela玢o entre ci阯cia e moral como uma imbrica玢o correspondente rela玢o entre Verdade em si e Bem em si. Num texto de juventude, Sobre verdade e mentira no sentido extramoral, Nietzsche faz uma cr韙ica a essa tradi玢o em dois movimentos: em primeiro lugar, nega a exist阯cia liga玢o necess醨ia entre Verdade e Bem, medida que

Thiago Mota

103

La judicializacin del caso de la pldora del da despus en Chile: las tensiones sobre el rol de la mujer y la cuestin tcnica1  

E-print Network

que ser醤 supeditadas al contexto social en cual la pol韙ica se inscribe. Introducci髇 El Chile de la1 La judicializaci髇 del caso de la p韑dora del d韆 despu閟 en Chile: las tensiones sobre el rol de en torno a la introducci髇 de la p韑dora del d韆 despu閟 en Chile. Esta discusi髇 se posicion en la

Paris-Sud XI, Universit de

104

Una primera parte (terica), sobre la Optimizacin, desde la perspectiva psicopedaggica y clnica,de la intervencin psicoeducativa en el Trastorno  

E-print Network

en ejercicio especialista enTDAH: Seminario sobre conocimientos pr谩cticos de la intervenci贸n cl铆nica una bolsa de trabajo como profesional formado de manera espec铆fica en TDAH. OBJETIVOS DEL CURSO: 路 AnalizarlarealidaddelossujetosconTDAH,desdesuprimera infancia hasta la entrada en la edad adulta

Escolano, Francisco

105

La Convencin sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestres (CITES, por sus siglas en ingls) es un acuerdo internacional firmado por  

E-print Network

La Convenci髇 sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestres garantizar que el comercio internacional de animales y plantas no amenace su supervivencia en la naturaleza (CITES, por sus siglas en ingl閟) es un acuerdo internacional firmado por 178 naciones designadas para

106

La Convencin sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestres (CITES, por sus siglas en ingls) es un acuerdo internacional firmado  

E-print Network

La Convenci髇 sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestres garantizar que el comercio internacional de animales y plantas silvestres no amenaza su supervivencia en la (CITES, por sus siglas en ingl閟) es un acuerdo internacional firmado por 176 naciones designadas para

107

Algunas estadsticas sobre los contenidos de Digital.CSIC Con ocasin del primer aniversario de la creacin de la Oficina Tcnica Digital.CSIC,  

E-print Network

estad韘ticos sobre contenidos almacenados en el repositorio institucional del CSIC ocho meses y medio despu閟 contenidos en los principales repositorios espa駉les (01/10/08) #12;01/10/2008 p. 2 de 3 Distribuci髇 de Digital.CSIC de los 鷏timos siete meses (01/10/08) Tabla 1.- Estad韘ticas de uso de grandes repositorios

108

Algunas estadsticas sobre los contenidos de Digital.CSIC Con ocasin de los 5000 registros en el repositorio, se difunden algunos datos  

E-print Network

repositorio, se difunden algunos datos estad韘ticos sobre los contenidos almacenados en el repositorio institucional del CSIC. Figura 1.- Ritmo de crecimiento de contenidos en Digital.CSIC Evoluci髇 del n鷐ero de Figura 2.- Gr醘ica comparativa del crecimiento de contenidos en los principales repositorios espa駉les

109

Experiencia en la Construcci髇 de un Objeto de Aprendizaje sobre el Ciclo de Krebs para favorecer el proceso de Ense馻nza Aprendizaje en Bioqu韒ica  

Microsoft Academic Search

Se describe el proceso de dise駉 y construcci髇 de un Objeto de Aprendizaje (OA) sobre el Ciclo de Krebs, utilizando la metodolog韆 ISD- MeLO (Instructional Systems Development Methodology based on e-Learning Objects). Para el desarrollo del OA se utilizaron las herramientas de software SWiSHMax para elaborar las animaciones, Adobe Photoshop para crear las im醙enes del OA y Dreamweaver para el

Vanessa Miguel; Mar韆 Gertrudis L髉ez; Lisbeth Ramos; Omar Villarroel; Nora Monta駉; Yosly Hernandez

2007-01-01

110

Recuperaci髇 de la inversi髇 en infraestructura en Am閞ica Latina y el Caribe: Documentos seleccionados de la Serie de Conferencias del BID sobre Infraestructura, 2004  

Microsoft Academic Search

La Serie de Conferencias del BID sobre Infraestructura (2004) incluy cuatro eventos que se celebraron en Madrid (22-23 de enero), Washington, D.C. (19-20 de febrero), Lima (27 de marzo, durante la Reuni髇 Anual del Banco) y Tokio (13 de mayo). Estos eventos reunieron a especialistas e interesados de primera fila, entre los que se encontraban empresas consolidadas y posibles inversionistas

Antonio Vives; Alberto E. Chong; John S. Strong; Jos Luis Guasch; Juan Benavides; Analistas Financieros Internacionales; Stephen Harris; Remy Cohen; Marco Percoco

2005-01-01

111

La econom韆 del departamento de C髍doba: ganader韆 y miner韆 como sectores claves  

Microsoft Academic Search

En esta investigaci髇 se indaga sobre que elementos han obstaculizado el desenvolvimiento econ髆ico de C髍doba. Es tradici髇 afirmar que el departamento cuenta con suelos de gran fertilidad, pero en el documento se analiza la calidad de la tierra no s髄o en funci髇 de la capa vegetal, sino tambi閚 en los niveles de precipitaci髇 y recurso h韉rico. 蓅te 鷏timo genera sequ韆s

Joaqu韓 Viloria De La Hoz

2004-01-01

112

Informe Anual a la Naci髇 sobre el Estado del C醤cer, de 1975 a 2010, con una secci髇 especial sobre la prevalencia de comorbilidad y su efecto en la supervivencia de personas con c醤cer de pulm髇, seno, pr髎tata o colorrectal: preguntas y respuestas  

Cancer.gov

El Informe Anual a la Naci髇 sobre el Estado del C醤cer (1975 a 2010), mostr un descenso m醩 acelerado que en a駉s anteriores de los 韓dices de mortalidad por c醤cer de pulm髇. Tambi閚 contiene una secci髇 especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con c醤cer.

113

縌ui閚 teme a la psicolog韆 feminista? Reflexiones sobre las construcciones discursivas de profesores, estudiantes y profesionales de psicolog韆 para que cuando el g閚ero entre en el aula, el feminismo no salga por la ventana  

Microsoft Academic Search

* Resumen: En el texto se problematizar la inclusi髇 del g閚ero en psicolog韆 a partir de las construcciones discursivas obtenidas en una investigaci髇 cualitativa sobre las opiniones de estudiantes, profesores y profesionales. Dado que la mayor aceptaci髇 asimila \\

Teresa Cabruja Ubach

2008-01-01

114

Genesis of petroduric and petrocalcic horizons in Latinamerica volcanic soils  

NASA Astrophysics Data System (ADS)

Introduction. In Latinamerica, from Mexico to Chile, there are indurated volcanic soils horizons, named 'tepetate' in Mexico or cangahua in the Andes Mountains. Apart from original volcanic tuffs, these horizons were produced by pedogenesis: either through a former weathering of volcanic ash layers into fragic and later to petrocalcic horizons; or after a former soil formation through a second process of transformation from clayey volcanic soils to silicified petroduric horizons. This oral presentation will briefly deal with the formation of petroduric horizons in Mexico and petrocalcic horizon in Ecuador. Petroduric horizon genesis in Mexico. A soil climato-toposequence, near to Veracruz (Rossignol & Quantin, 1997), shows downwards an evolution from a ferralic Nitisol to a petroduric Durisol. A Durisol profile comports these successive horizons: at the top A and Eg, then columnar Btg-sim, laminar Bt-sim , prismatic Bsim, plinthite Cg, over andesite lava flow. Among its main features are especially recorded: clay mineralogy, microscopy and HRTEM. These data show: an increase in cristobalite at the expenses of 0.7 nm halloysite in Egsiltans, laminar Bt-sim, around or inside the columns or prisms of Btg-sim and Bsimhorizons. HRTEM (Elsass & al 2000) on ultra thin sections reveals an 'epigenesis' of clay sheets by amorphous silica, to form successively A-opal, Ct-opal and microcrystalline cristobalite. From these data and some groundwater chemical analyses, a scenario of duripan formation from a past clayey Nitisol is inferred: clay eluviation-illuviation process? alternate redoximorphy? clay degradation, Al leaching and Si accumulation, to form successively A-opal, Ct-opal and cristobalite. Petrocalcic horizon genesis in Ecuador. A soil climato-toposequence on pyroclastic flows, near to Bolivar in Ecuador (Quantin & Zebrowski, 1997), shows downwards the evolution from fragic-eutric-vitric Cambisols to petrocalcic-vitric Phaeozems, at the piedmont under semi-arid climate. A complex soil profile of petrocalcic Phaeozem, derived from 4 pyroclastic layers, shows among its successive horizons: in layer 3 the 'upper cangahua' with petrocalcic features and in layer 4 the 'lower cangahua' with hard fragipan properties. The features of the petrocalcic cangahua differ from a Mexican fragipan (Hidalgo & al 1997) by: a hard calcrete, higher alkalinity, stability in water after HCl and NaOH treatment, 2-4% of 'free silica'. The macro and micro-morphology shows: the laminar calcite crust, at the top of cangahua, with alternate micrite-sparite layers; downwards, microcalcite infillings in the voids of a prismatic structure, invading the groundmass by epigenesis of clay sheets, together whith microcrystalline opal. From these data this scenario is inferred: after a former weathering of volcanic glass to form a clayey matrix, as well amorphous silica and microcalcite coatings and infillings, then a second process, perhaps due to drier climate, produced the laminar crust formation, by invasion of microcalcite in the matrix. Conclusion. The petrocalcic horizon in Ecuador was produced by two processes: from a former phase of weathering giving a fragic horizon to a second producing the accumulation of calcite and some opal over and inside the matrix, due to climate change. The petroduric horizon in Mexico, is the product of a very complex soil transformation, from a former clayey Nitisol, through four successive processes: clay eluviation-illuviation, alternate redoximorphy, clay degradation, finally a progressive silicification over and inside the groundmass, probably due to pedoclimate change. References F. Elsass, D. Dubroeucq & M. Thiry. 2000. Clay Minerals, 35, 477-489. C. Hidalgo, P. Quantin & F. Elsass. 1997. Memorias del III Simposio Internacional sobre Suelos volcanicos endurecidos (Quito 1996), p. 65-72. - P. Quantin & C. Zebrowski. 1997. idem, p. 29-47.- J.P. Rossignol & P. Quantin. 1997. idem, p. 73-82.

Quantin, Paul

2010-05-01

115

LOS LABORATORIOS DE AN罫ISIS DE SUELOS Y FOLIARES EN COSTA RICA: INFORME DEL COMIT DE LABORATORIOS DE AN罫ISIS DE SUELOS, PLANTAS Y AGUAS1  

Microsoft Academic Search

Soil and foliar analysis laboratories in Costa Rica: a report of the Committee for Laboratories of Analysis of Soils, Plants and Waters. The characteristics and methodologies of each laboratory are described, as well as the results of the National Exchange Programs, which have been implemented among all of them for the last 6 years, and which are denominated as PINAS

Marco Corrales; Floria Bertsch; Jos Antonio Bejarano

116

Experiencias sobre el impacto del Programa de Formaci髇 en 蓆ica de la Investigaci髇 Biom閐ica y Psicosocial en el 醡bito de la salud mental y la investigaci髇 conductual.  

PubMed

El prop髎ito de este trabajo es presentar el impacto y la integraci髇 que los conocimientos adquiridos en el Programa Internacional de Formaci髇 en 蓆ica de la Investigaci髇 Biom閐ica y Psicosocial de la Universidad de Chile han tenido en mi experiencia profesional, en el 醡bito de la investigaci髇 psicosocial en un Instituto de Salud de M閤ico. Para este objetivo, expondr tres 醨eas en las cuales se ha podido evidenciar tal impacto: trabajo en los comit閟 de 閠ica, desarrollo de programas de acad閙icos en bio閠ica e investigaci髇 y publicaci髇 sobre 閠ica y bio閠ica. El motivo que me llev a incursionar en el Programa fue que su ense馻nza vincula la investigaci髇 psicosocial con la 閠ica y la bio閠ica, lo cual me permiti dirigir este tipo de reflexi髇 hacia problemas como violencia, suicidio, adicciones, depresi髇 y salud mental, y a nuevos campos como los estudios comunitarios, con poblaciones en riesgo o vulnerables, en los cuales las diversas implicaciones son dif韈iles de indagar. PMID:22754085

Barrios, Liliana Mondrag髇

2012-01-01

117

10.4.3. Oficina de Gesti Ambiental i Sostenibilitat (OGAS) Al llarg del curs 2010-2011 la OGAS ha dut a terme tasques d'assessorament sobre  

E-print Network

10.4.3. Oficina de Gesti Ambiental i Sostenibilitat (OGAS) Al llarg del curs 2010-2011 la OGAS ha dut a terme tasques d'assessorament sobre gesti ambiental, s'ha acordat amb les empreses concession鄏ies refor鏰r els seus aspectes ambientals, s'ha coordinat amb agents auton騧ics i insulars el proc閟 d

Oro, Daniel

118

Posi珲es de licenciandos em f韘ica sobre leituras no ensino m閐io da f韘ica moderna e contempor鈔ea em textos de divulga玢o cient韋ica * Future high school teachers' positions about high school modern and contemporary physics popular science reading  

Microsoft Academic Search

Temos por objetivo, neste estudo, compreender aspectos do imagin醨io de licenciandos, em f韘ica, sobre a possibilidade de utiliza玢o de textos de divulga玢o cient韋ica de f韘ica moderna e contempor鈔ea em classes de ensino m閐io, atrav閟 de uma atividade de leitura de textos de divulga玢o cient韋ica, contidos nas revistas Pesquisa Fapesp e Ci阯cia Hoje, na qual os licenciandos responderam um question醨io com

Ricardo Henrique Almeida Dias; Maria Jos; Pereira Monteiro de Almeida

119

EFEITOS DO TRATAMENTO DAS PART虲ULAS DE Eucalyptus dunnii (Maid), DA VARIA敲O DA RELA敲O MADEIRA-CIMENTO E DO USO DE ADITIVOS SOBRE AS PROPRIEDADES F蚐ICAS E MEC翹ICAS DE CHAPAS DE MADEIRA-CIMENTO  

Microsoft Academic Search

2 RESUMO: Este trabalho teve por objetivo avaliar o efeito do tratamento das part韈ulas, da varia玢o da rela玢o madeira:cimento e da utiliza玢o de aditivos qu韒icos sobre as propriedades f韘icas e mec鈔icas das chapas minerais fabricadas com part韈ulas de Eucalyptus dunnii (Maid) combinada com cimento portland. Foram empregados tr阺 tratamentos de part韈ulas (part韈ulas sem tratamento, tratadas com 醙ua quente por 1

Jo鉶 Vicente de Figueiredo; Setsuo Iwakiri

120

VARIACIONES MICROCLIM罷ICAS EN INVERNADERO: EFECTO SOBRE LAS RELACIONES H虳RICAS E INTERCAMBIO DE GASES EN PIMENT覰 (Capsicum annuum) GREENHOUSE MICROCLIMATIC VARIATIONS: EFFECTS ON WATER RELATIONS AND GAS EXCHANGE ON BELL PEPPER (Capsicum annuum)  

Microsoft Academic Search

? ? ? ? ?2 s ? ? ? ? ?1 ) sobre el microclima en invernaderos y las relaciones h韉ricas e intercambio de gases en tres h韇ridos de Capsicum annuum. Las mediciones de microclima incluyeron temperatura y humedad relativa a 4, 2.5 y 1.5 m. En ambas condiciones de radiaci髇, la temperatura y humedad relativa entre 1.5 y 4.0

Ronald Da-Silva; Andre韓a D' Aubeterre; Josu Allende; Ferm韓 Rada; Rafael Figueiral; Vivero El Horticultor

121

Estudo baseado na teoria piagetiana sobre a fidelidade em dois contos de As Mil e uma Noites na vers鉶 de Galland 1 Study based on Piaget's theory about fidelity in two stories extracted from \\  

Microsoft Academic Search

Resumo: Caracteriza-se por um estudo te髍ico numa vis鉶 piagetiana sobre dois contos da colet鈔ea As Mil e uma Noites na vers鉶 de Galland. O objetivo analisar, nas narrativas, a virtude e a fidelidade, verificando se as rela珲es entre os personagens s鉶 mantidas pelo amor, pelo respeito m鷗uo e rela珲es de eq黫dade ou pelo medo e obedi阯cia apresentado entre os

Luana Carramillo Going

122

Desarrollo de la Escala sobre el Estigma Relacionado con el VIH/SIDA para Profesionales de la Salud mediante el uso de m閠odos mixtos123  

PubMed Central

El estigma relacionado con el VIH/SIDA contin鷄 siendo un obst醕ulo para la prevenci髇 primaria y secundaria del VIH. Las consecuencias para las personas que viven con la enfermedad han sido muy documentadas y contin鷄n siendo una gran preocupaci髇 para las personas que proveen servicios de salud y para aquellas que investigan el tema. Estas consecuencias son preocupantes cuando el estigma emana de profesionales de la salud porque se puede limitar el acceso a los servicios. Uno de los principales obst醕ulos para la investigaci髇 del estigma relacionado con el VIH en Puerto Rico es la falta de instrumentos cuantitativos para evaluar las manifestaciones del estigma entre profesionales de la salud. El objetivo principal de este estudio fue desarrollar y probar las propiedades psicom閠ricas de una escala sobre el estigma relacionado con el VIH/SIDA culturalmente apropiada para personas que proveen servicios de salud puertorrique馻s y desarrollar una versi髇 corta de la escala que pudiera usarse en escenarios cl韓icos con tiempo limitado. El instrumento desarrollado estuvo basado en evidencia cualitativa recopilada entre profesionales y estudiantes de profesiones de la salud puertorrique駉s/as (n=80) y administrado a una muestra de 421 profesionales de la salud en adiestramiento. La escala conten韆 12 dimensiones del estigma relacionado con el VIH/SIDA. El an醠isis cuantitativo corrobor 11 de ellas, teniendo como resultado un instrumento con validez y confiabilidad satisfactoria. Estas dimensiones, a su vez, fueron subcomponentes de un factor de estigma general superior. PMID:20333258

Varas-D韆z, Nelson; Neilands, Torsten B.; Guilamo-Ramos, Vincent; Cintr髇 Bou, Francheska N.

2009-01-01

123

縋OR QU LOS SUELOS VOLC罭ICOS NO SIGUEN LA ECUACI覰 DE TOPP?  

Microsoft Academic Search

The transmission of an electromagnetic wave through the soil using Time Domain Reflectometry (TDR) permits the determination of its water content, q, given the composite dielectric constant of the soil, ?c, via Topp's equation. This is possible since the dielectric constant of water is much larger than that of the soil's solid phase (80 vs. 5), and therefore changes in

C. M. Regalado; R. Mu駉z Carpena; A. R. Socorro

124

CALIDAD DEL SUELO COMO RESPUESTA A LA APLICACI覰 DE PRACTICAS DE IMPLANTACI覰 FORESTAL  

Microsoft Academic Search

SUMMARY The last years increase the interest to know the impact of silvicultural practices on the characteristics and functionality of the red soils under second rotation. In this study changes in soil organic carbon (OC), light fraction organic matter (LF) and weight of the aggregate mean diameter (MWD) were analyzed in relation to the following site preparation practices: a) manual

A. M. Lupi; R. Fern醤dez; M. Conti

125

CUANTIFICACION DE LAS FRACCIONES ORGANICAS E INORGANICAS DE FOSFORO EN SUELOS DE LA MESOPOTAMIA ARGENTINA  

Microsoft Academic Search

Surface horizon samples of 13 uncultivated and nonfertilized soils of the Argentinean Mesopotamia, with differing weathering stages, were analyzed for organic and inorganic phosphorus forms to evalu- ate the effects of different soil development on phosphorous composition. Results indicated that absolute contents of total phosphorus varied from 125 mg P kg -1 in Entisols, to 700 mg P kg -1

NG BOSCHETTI; CE QUINTERO; RA BENAVIDEZ; L GIUFFRE

2003-01-01

126

ASPECTOS DEL MANEJO DEL AGUA DEL SUELO PARA EL CULTIVO DE TRIGO  

Microsoft Academic Search

En la regi髇 semi醨ida pampeana (RSP) el uso consuntivo (UC) de los cultivos de cosecha y forrajeros normalmente resulta superior a las precipitaciones, es decir la cantidad y distribuci髇 de las precipitaciones no logran cubrir los requerimientos h韉ricos, limitando la productividad de los cultivos. Al respecto, Quiroga et al. (1998), observaron a trav閟 de una red de ensayos que el

Alberto Quiroga; Daniel Funaro; Oscar Orme駉

2003-01-01

127

Micoflora del suelo de la argentina. I algunas formas ascosporicas de la region chaque馻  

Microsoft Academic Search

This paper summarizes the first results of a mycological survey of soils from the phytogeographical area known as Chaco (Argentina), and includes the records with descriptions of eight ascosporic form isolated, namely,Emericella nidulans varechinulata, Talaromyces spiculisporus, Auxarthron pseudoauxathron, Pectinotrichum llanense, Chaetomium globosum, Chaetomium reflexum, Sordaria fimicola andNeocosmospora africana, of whichEmericella nidulans varechinulata, Talaromyces spiculisporus, Auxarthron pseudoauxarthron, Pectinotrichum llanense, Neocosmospora africana,

Alicia M. Godeas

1972-01-01

128

CORRELACION ENTRE METODOS DE ANALISIS DE Zn DISPONIBLE EN CUATRO ORDENES DE SUELOS DE COSTA RICA  

Microsoft Academic Search

Se realizo una comparacion entre metodos Evaluation of methods for available de analisis del Zn disponible en 4 ordenes de sue- Zn in four soil orders in Costa Rica. Analyti- los de Costa Rica (Ultisoles, Vertisoles, Andisoles cal methods for available Zn determination we- e Inceptisoles, 25 de c\\/u), utilizando las siguientes re evaluated on four soil orders in Costa

Eloy Molina; Elemer Bomemisza

129

DIN罬ICAS EVOLUTIVAS DE SUELOS EN ATUM PAMPA, SIERRAS PAMPEANAS, C覴DOBA, ARGENTINA  

Microsoft Academic Search

RESUMEN Atum Pampa se ubica en las Sierras Gran- des de C髍doba, a 1000 m s.m. Los proce- sos pedogen閠icos dominantes en el 醨ea son: melanizaci髇, calcificaci髇-descal- cificaci髇, eluviaci髇-iluviaci髇 y alcalinizaci髇. Los horizontes superficia- les contienen dos tipos de humus: uno es un mull con dominio de Ca++ intercam- biable y el otro es un mull con CO 3Ca libre.

EVOLUTIVE SOIL; AN虰AL MANZUR; Parque Gral

1997-01-01

130

DIFERENCIAS EN CONCENTRACI覰 DE PLAGUICIDAS ORGANOCLORADOS PERSISTENTES EN SUELO, PAJA Y GRANOS DE TRIGO  

Microsoft Academic Search

Crops incorporate pesticide residues through the roots and adsorb particles and vapors on their surface. The concentrations of organochlorine pesticides were determined in soil and wheat plants in order to observe their distribution from soil through growing plants. The determina- tions were done by gas chromatography. The minor concentrations corresponded to HCB (hexachlorobenzene), they were 0.7 礸\\/kg in soil, 0.9

Stefan M. WALISZEWSKI; Rosa M. INFANZ覰

2003-01-01

131

BIODEGRADACI覰 DE DIESEL MEXICANO POR UN CONSORCIO DE BACTERIAS DE UN SUELO AGR虲OLA  

Microsoft Academic Search

The biodegradation of diesel in water was done by means of the microorganisms present in an agriculture soil. The kinetics of biodegradation and adsortion of diesel were determined in order to aplying the procedure in soil and water resources contamined with diesel. The mehodology and results of biodegradation and adsortion of diesel in sintetic water is presented with a soil

SANTIAGO CARDONA; ROSARIO ITURBE

2003-01-01

132

NIVELES DE METALES PESADOS EN Thymus zygis DESARROLLADO EN SUELOS ENMENDADOS CON RESIDUOS ORG罭ICOS URBANOS  

Microsoft Academic Search

Experimental plots of a degraded carbonated soil located in the south of Madrid (Spain) were treated with anaerobically digested biosolid (B) and urban solid residues (RSU) at a rate of 0 and 80 Mg ha -1 . Changes of heavy metal (Cd, Cr, Cu, Ni, Pb and Zn) contents and their distribution were determined both in soils and Thymus zygis

Virginia ILLERA; Ingrid WALTER; Victoria CALA; Tecnolog韆 Agraria

2001-01-01

133

INCUBACION ANAEROBICA DEL SUELO COMO DIAGNOSTICO DE LA RESPUESTA A NITROGENO DEL MAIZ BAJO SIEMBRA DIRECTA  

Microsoft Academic Search

-1 then the yield increment = 72,5 - 1,38 Nan, if Nan > 48.mg kg -1 the yield increment = 6 %). Nan was related with the time (years) since the last pasture (r 2 = 0.39). These results suggest that Nan probably is associated with light carbon fractions and can be used to explain the response of maize to

PA CALVI袿; HE ECHEVERR虯

134

ABSORCION DE NITROGENO POR CEBADA CERVECERA EN DOS SUELOS DEL SUR BONAERENSE, ARGENTINA  

Microsoft Academic Search

-1 (60N) were studied in a pot experiment in a glasshouse using urea labelled with 15 N applied at sowing to two soils: Bordenave (B, Typic Haplustoll), and Tres Arroyos (TA, Petrocalcic Argiudoll). Pots were destructively sampled at the fifth leaf, ear emergence, milky kernel and physiological maturity stages. Distribution of 15 N and 14 N in shoots and roots,

MA LAZZARI; MA CANTAMUTTO; RA ROSELL; FE M諧KEL; ME ECHAG蹺

135

TOLERANCIA A SUELOS 罜IDOS EN POBLACIONES TROPICALES DE MA蚙 DEL CIMMYT1  

Microsoft Academic Search

Tropical corn populations tolerant to acid soils. Currently, five tropical maize populations from CIMMYT are being bred for tolerance to acid soils through a full-sib recurrent selection scheme. Three cycles of selection from each population were evaluated in a split-plot design, with a varied number of replications under five environments (with normal soils, and the remaining four with varying degrees

H. Ceballos; S. Pandey; E. B. Knapp; J. V. Duque

136

ROLADO DE FACHINALES Y CALIDAD DE SUELOS EN EL CHACO OCCIDENTAL, ARGENTINA  

Microsoft Academic Search

In the western Chaco region the suitability for cow-calf operations of areas dominated by shrub thickets of Acacia, Celtis and Prosopis ('fachinales') is reduced because of their low carrying capacity and poor accessibility. Our objective was to assess the effect of practices commonly used to increase the standing forage of 'fachinales' on some indicators of soil quality (bulk density, total

ANAL虯 ANRIQUEZ; CARLOS KUNST; ROXANA LEDESMA; CARLOS L覲EZ; ARIEL RODR虶UEZ TORRESI; JOS GODOY

137

Actividad microbiana en suelos de sabanas de los Llanos Orientales de Venezuela convertidas en pasturas  

Microsoft Academic Search

Micr obial activity in Eastern Venezuelan savannas turned into grasslands. We studied the effects of season and management practices on chemical properties and biochemical parameters in a typical Ultisol soil of native and introduced pastures of the Eastern savannas of Venezuela. Sseason, soil management, and their interaction, significantly affected chemical properties and biochemical parameters. The total carbon and the water

Y. G髆ez; J. Paolini

2006-01-01

138

PERDIDA DE NUTRIENTES POR EROSION HIDRICA EN DOS SUELOS DEL CALDENAL PAMPEANO  

Microsoft Academic Search

2 ). Losses of N and P were significantly higher in March than in September. In the bare soil, nutrient losses were higher in the Haplustoll than in the Ustipsamment, while with vegetation cover, erosion was of lesser importance, and similar for both soil types. Organic carbon was the soil constituent that suffered the highest losses due to water erosion.

EO ADEMA; FJ BABINEC; N PEINEMANN

139

Aislamiento de keratinomyces ajelloi y microsporum gypseum del suelo de la ciudad de buenos aires  

Microsoft Academic Search

Summary Keratinomyces ajelloi andMicrosporum gypseum have been isolated from soil samples from public gardens and from a breeding-place with rabbits and fowls in the urban zone of the Buenos Aires city, usingVanbreuseghem's technique with hair bait.

Edith Varsavsky

1962-01-01

140

METODOS RAPIDOS DE ESTIMACION DE NITROGENO POTENCIAL- MENTE MINERALIZABLE EN SUELOS  

Microsoft Academic Search

The objective of this study was to relate potentially mineralizable soil nitrogen (N) obtained by means of long-term aerobic incubations (No), with nitrogen mineralizated using more rapid and simple methods such as KCl digestion (Nq) and short-term anaerobic incubations at 40 篊 (Na). A preliminar experience, carried out on 23 soil samples of the southeastern Buenos Aires Province, allowed to

H E ECHEVERRIA; N F SAN MARTIN; R BERGONZI

2000-01-01

141

USO DEL MODELO FRACTAL PARA CARACTERIZAR LA DISTRIBUCION DE TAMA袿 DE PARTICULAS EN SUELOS  

Microsoft Academic Search

The objective of this study was to characterize the particle-size distribution of a soil by means of fractal geometry using the accumulated mass fraction and the particle diameter. In order to fit the experimental data the accumulated mass and the particle diameter were related by a power law relation, as a result of considering the fragmentation process as fractal. The

RR FILGUEIRA; MG GARC虯; MF ROGGIERO; A ARAG覰; GO SARLI

142

FORMAS DE FOSFORO EN SUELOS ALTAMENTE METEORIZADOS DEL SUR DE LA PROVINCIA DE MISIONES  

Microsoft Academic Search

-1 in Alfisols), and it showed an increase with soil depth. Negative correlations were obtained between Al and H and residual phosphorus. Phosphates were transformed into secondary forms (the inorganic and organic NaOH and NaOH sonicated extracted phosphates) which predominated over the labile phosphate forms in agreement with an increase of the amorphous Al and Fe contents. Organic NaOH extracted

C FERNANDEZ LOPEZ; S VAZQUEZ; HC DALURZO

143

AMPLIFICACI覰 DE LAS ANOMAL虯S DE HUMEDAD DE SUELO Y DEL 蚇DICE \\  

Microsoft Academic Search

We show that El Ni駉\\/Southern Oscillation event amplifies strong negative anomalies in soil moisture and NDVI (Normalized Difference Vegetation Index) in Colombia. Time variability of soil moisture was studied by using time-domain reflectometry data collected at depths of 20 cm and 40 cm at three sites under shadow coffee, forest and sunlight coffee, in the tropical Andes, central Colombia. We

Germ醤 Poveda; Alvaro Jaramillo; Ricardo Mantilla

144

Estudio del comportamiento acustico de recubrimientos de suelo derivados de la madera  

NASA Astrophysics Data System (ADS)

This work describes a study of the vibroacoustic behaviour of laminate flooring and is partly accomplished by means of an experimental method somewhat simpler than that normally used at the present time and partly by a hybrid FEM-FDTD numerical method that reproduces the proposed experiment. The experimental configuration records the sounds emitted by laminate floors when impacted and the numerical method allows the sound produced by the laminate floor to be determined before installation by previously reproducing its sound. The registers obtained from both methods are evaluated from the psychoacoustic perspective with the aim of determining the relevant parameters involved in their perception, and thus provide a method of distinguishing the effect of the different component materials on the sound produced by this type of floor covering. In the field of building acoustics, with which this work is involved, laminate flooring is seen as a good solution for deadening the noise of impacts. This question has now become important due to stricter building acoustic regulations (DB-HR Proteccion frente al ruido" del Codigo Tecnico de la Edificacion, CTE). Laminate floors possess the advantage that they can be installed over existing floor coverings. Their lightness, which adds little additional strain to structures, and the fact that they are easy to fit, make them an attractive solution at the present time and gives them promising prospects for the future. Of the different types available, synthetic laminate floors are now the most popular by far in almost all types of building and for this reason research is being carried out on the users' opinion of their quality and convenience. Among the factors that affect the latter quality is their acoustic behaviour as regards both the insulation of sound transmitted to neighbouring rooms and the sound reflected from the floor in the room in which it is installed. The conclusions reached in this work are related to the latter aspect, known as acoustic conditioning, rather than with acoustic insulation. Synthetic laminate floors are made of extremely rigid materials normally fitted over an underlay of softer material to improve thermal and acoustic behaviour and also make them more comfortable to walk on due to the underlay's shock-absorbing properties. This paper proposes a method of characterising synthetic laminate floors to provide an evaluation of the acoustic and psychoacoustic behaviour of the sound produced by the floor inside the room in which it is emitted. As has already been indicated, an experimental model is proposed to carry out tests on different combinations of synthetic laminate flooring and underlay materials. Sound registers are obtained directly from the experimental models by means of a measuring microphone and the psychoacoustic parameters that determine the acoustic qualities as perceived by human subjects are then determined. At the same time as these experiments are being carried out and analysed, a numerical model is implemented based on a combination of the finite elements method (FEM) and the finite difference in the time domain method (FDTD). This procedure is based on a finite elements 3D model with fluid-structural interaction to solve the dynamic problem caused by an impact. The velocity of each surface node is obtained from this model. By applying the method of finite difference in the time domain (FDTD), these velocities provide the sound pressure level at any point, according to the position of the microphone. This experiment enables different types of flooring to be characterised before they are fitted, provided that their mechanical characteristics (elastic modules and loss factors) are known. The subsequent processing of the sound archives obtained from the numerical experiment provides a method of identifying similarities between the results obtained from the physical experiment and those of the numerical model, thus demonstrating that it is possible to determine the acoustic quality of different types of flooring materials by numerical simulat

Gadea Borrell, Jose Maria

145

Uso alternativo de abonos 髍gano-minerales en suelos ferral韙icos rojos compactados  

Microsoft Academic Search

The soil degradation constitutes the first environmental problem in Cuba. The Red Ferralitic soil in Villa Clara province, it has as main restrictive: the compacting and erosion risk, due to the physical degradation. The experiment was developed under controlled conditions, in the Agricultural Research Institute (CIAP) with the objective of studying the effect of organ-minerals fertilizers on the physical and

Ariany Col醩 S醤chez; Joaqu韓 Machado de Armas; Bladimir D韆z Mart韓; Pedro Cairo Cairo; Ismaray Padr髇 Hern醤dez

146

DEGRADACI覰 F蚐ICA Y QU蚆ICA DE UN HAPLUSTOL T蚉ICO BAJO DISTINTOS SISTEMAS DE MANEJO DE SUELO  

Microsoft Academic Search

In the province of Tucum醤 there was a great process of expansion of the farming borders to dry sub humid and semi- arid areas. This process led to the physical, chemical and biological degradation of the soils. The objective of this work was to determine the long term effects of different tillage systems on physical and chemical degradation of a

GERARDO AGUST蚇 SANZANO; ROBERTO DANIEL CORBELLA; JOS RAM覰 GARC虯; GUILLERMO SALVADOR FADDA

147

DISE袿 Y VALIDACI覰 DE UNA SONDA TDR PARA LA MEDICI覰 DE LA HUMEDAD DEL SUELO  

Microsoft Academic Search

This paper describes a probe design (patent in procedure) to measure the soil moisture using the TDR (Time Domain Reflectometry) technique. In contrast to former designs, the TDR-probe proposed has a serie of advantages and it is typified by its versatility, easy assembly and connection, toughness, watertight, sharpness in the graph of the pulse and low cost. An exhaustive analysis

Mart韓ez Fern醤dez; A. Ceballos Barbancho

148

DISE袿 EXPERIMENTAL PARA LA EXTRACCI覰 DE SOLUCI覰 DEL SUELO EN R蒅IMEN DE INSATURACI覰 (?600 KPA)  

Microsoft Academic Search

Different methods have been proposed to extract the soil solution in field, batch and soil column experiments: zero-tension or free drainage, suction cups, Rhizon soil water samplers, or centrifugation. Limitations of the different methods vary with the degree of soil disturbance and contamination of the soil solution, ion retention by the soil sampler, sufficient extraction volumes for analysis, and more

C. M. Regalado; A. Ritter; R. M. Rodr韌uez Gonz醠ez; A. R. Socorro

149

Producci髇 de suelo industrial en la Comunidad de Madrid: expansi髇, dispersi髇 y fragmentaci髇 del espacio industrial  

Microsoft Academic Search

This paper studies tbc evolution in the produetion of industrial areas in the Comunidad de Madrid. As apposed to the spatial concentration in the sixties and seventies (big industrial arcas in a few mun韈韕a- lities), it has been observed during thc last years a trend towards expansian, dispersion and fragmenta- tion olthc industrial space(a great number of more diverse and

Javier GUTI蒖REZ PUEBLA

150

Institut de recherche pour le dveloppement informe de actividades 2012  

E-print Network

Naciones Unidas sobre el desarrollo sostenible y Rio+20, son dos eventos capitales en los que se ha puesto Guadalupe Estados Unidos Colombia Argentina ECuADOR M?XICO Costa de Marfil SuD脕FRICA MADAGASCAR INDONESIA que ayer, se enfrentan los pa铆ses en desarrollo: cambio clim谩tico, degradaci贸n del suelo, conservaci贸n

151

Introduccin La regeneracin de los bosques explotados no slo  

E-print Network

brinzales. Durante tres a帽os, se midi贸 la densidad de pi帽ones sobre el suelo, la emergencia de las pl谩ntulas y su supervivencia en cuatro h谩bitats diferentes. La densidad media de pi帽ones fue de 877 por m2 y. Palabras clave: probabilidades de transici贸n, factores abi贸ticos y bi贸ticos, monta帽a mediterr谩nea, densidad

Herrera, Carlos M.

152

P髎teres Sobre Animales y Matem醫icas  

NSDL National Science Digital Library

Exponga estos p髎teres en el sal髇 o d閖elos donde los chicos los puedan explorar. Los chicos buscan las respuestas en libros de consulta o en l韓ea. Algunas respuestas pueden variar a medida que se vaya descubriendo nueva informaci髇. Disponibles en formato pdf y en Ingl閟.

TERC

2010-01-01

153

Estudiossobrebiodegradacindemicrocontaminantesorgnicosemergentes Estudio sobre biodegradacin de  

E-print Network

, hidrocarburos, Disinfection By Products, compuestos halogenados, etc. MICROCONTAMINANTES EMERGENTES activado INVESTIGACI?N Tratamientos alternativos: DEPURACI?N NATURAL DE LAS AGUAS EN EL SUBSUELO (ZNS alternativos: DEPURACI?N NATURAL DE LAS AGUAS EN EL SUBSUELO (ZNS+ZS) Degradaci贸n aerobia (Mersmann&al,2002

Polit猫cnica de Catalunya, Universitat

154

La utilizacion de los mapas conceptuales en la ensenanza de biologia y su efecto sobre el dominio del proceso de fotosintesis en los estudiantes universitarios  

NASA Astrophysics Data System (ADS)

Se investigo el efecto de los mapas conceptuales sobre el dominio del proceso de fotosintesis en estudiantes universitarios. La investigacion utilizo dos estrategias: mapas conceptuales individuales y mapas conceptuales colaborativos, con el fin de investigar si existen diferencias significativas en el dominio del proceso de fotosintesis. El analisis de los datos incluyo aspectos cualitativos y cuantitativos. Se desprende del estudio que el 80% de los estudiantes describen la utilizacion de los mapas conceptuales como una experiencia beneficiosa. El 70% de los estudiantes expreso que los mapas conceptuales son utiles en el aprendizaje del proceso de fotosintesis y el 61% indico que facilitan la comprension de los conceptos. Los hallazgos mas importantes del analisis cuantitativo indican que los estudiantes que utilizaron los mapas conceptuales mejoraron significativamente su desempeno en la posprueba global. Se utilizo la prueba Mann-Whitney para investigar si existian diferencias significativas en la posprueba y preprueba global, el valor de W = 1945.0, para un valor p de 0.00, lo cual establece diferencias significativas. Para determinar si existian diferencias significativas entre la posprueba y preprueba del grupo individual, se realizo la prueba nuevamente. El valor de W correspondio a 490.5, que es significativo, con un valor p de 0.00. Se concluye que existen diferencias significativas entre la ejecucion de la posprueba y preprueba del grupo individual. Los datos proveen suficiente evidencia para sostener que los estudiantes que utilizaron la estrategia de mapas conceptuales individuales mejoraron el dominio del proceso de fotosintesis significativamente. Se realizo nuevamente la prueba para los resultados de posprueba y preprueba del grupo colaborativo. El valor de W correspondio a 446 con un valor p de 0.00. Se concluyo que existen diferencias significativas entre la ejecucion de la posprueba y preprueba del grupo colaborativo. Finalmente, se efectuo una prueba Mann-Whitney comparando la posprueba de ambos grupos. El valor de W fue de a 777, para un valor p de 0.2782. Aunque las puntuaciones de las pospruebas del grupo colaborativo fueron mayores que las puntuaciones de la posprueba del grupo individual, la diferencia no fue estadisticamente significativa.

Gonzalez Rivera, Maria M.

155

Investigaccion-accion en la sala de clases sobre las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios y su relacion reciproca con el aprendizaje de las ciencias biologicas  

NASA Astrophysics Data System (ADS)

La investigacion---accion que se llevo a cabo en la sala de clases tenia como punto de partida las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios para luego examinar sus implicaciones en el proceso de aprendizaje de las Ciencias Biologicas. 縌ue se supone que hagan las creencias en relacion con el aprendizaje? 縀n que consiste incorporar este aspecto a la practica educativa universitaria? Utilizando el modelo de Kemmis y McTaggart (1987) la investigacion-accion se planteo como un proceso dinamico en cuatro momentos en espiral constituidos por la planificacion, la accion, la observacion y la reflexion. Cada una de las fases tuvo una intencion retrospectiva y prospectiva formando una espiral de autorreflexion del conocimiento y la accion. Se llevaron a cabo audio grabaciones en clases y analisis de documentos. Ademas, la profesora-investigadora hizo un portafolio para reflexionar sobre las creencias de la cultura de la ciencia que tienen los estudiantes y las creencias del aprendizaje que tiene la profesora y sobre como la comprension de estos elementos ayudo a mejorar su practica educativa a traves del tiempo. Los resultados obtenidos apuntan a que las creencias de la cultura de la ciencia que tiene el grupo de estudiantes son diversas. Ellos si creen que la ciencia tiene una cultura la cual describieron como: complicada y desconocida que evoluciona constantemente, que es un conjunto de metodos, que es altamente tecnologica, que resuelve problemas de salud, ayuda a interpretar la realidad del mundo que los rodea y su origen y que existen unas intersecciones entre la ciencia y el poder. Sobre las creencias del proceso de aprendizaje de la profesora-investigadora, estas senalan que el modelaje de actores, la vision de la academia que tiene ella asi como la participacion y negociacion entre todos los involucrados en el proceso educativo, son factores que inciden en el proceso de aprendizaje.

Cordova-Santiago, Lizzette Astrid

156

Learning about the Sky from the Environment: An Experience Working Along One Year with Students of Elementary Education. (Spanish Title: Aprendiendo sobre EL Cielo Desde el Entorno: Una Experiencia Trabajando Durante un A駉 Junto a Estudiantes del Primario.) Aprendendo sobre o C閡 a Partir do Entorno: Uma Experi阯cia de Trabalho ao Longo de um Ano com Alunos de Ensino Fundamental  

NASA Astrophysics Data System (ADS)

Research developed with 95 students of the 6th year of elementary education in a public school of Uberl鈔dia, Minas Gerais. It was a continuous work from February to December 2013, which led the students to participate in activities of observation of the environment, specifically the sky, analyzing the changes occurred. We focused on the study of variations in temperature, rainfall, day length, variations in the size of the shadows and changes in the aspect of the Moon. Our focus of analysis targeted the discussion of the knowledge that these students had about the topics indicated and as they entered the stage during the implementation of the proposal. The results showed a limited perception that students have of their environment, however, lately expanded due to the undertaken activities, especially in relation to the Moon. Working with systematic measure procedures reveals the careful handling of data so that they become understandable to students, and working with the shadows points towards the students first understand how shadows are formed, and then apply this knowledge to Astronomy. Finally, we conclude that the lived process consisted of an initial step of a work that should be encouraged for the subsequent years of training of these students. Proyecto de investigaci髇 desarrollado con 95 alumnos del sexto a駉 de primaria en una escuela p鷅lica de Uberl鈔dia, Minas Gerais. Fue un trabajo continuo, de febrero a diciembre de 2013, que llev a los estudiantes a participar en actividades de observaci髇 de su entorno, entre ellas, el cielo, analizando los cambios ocurridos. Nos centramos en el estudio de las variaciones en la temperatura, las precipitaciones, la duraci髇 del d韆, las variaciones en el tama駉 de las sombras y los cambios en los aspectos de la Luna. Nuestro foco de an醠isis se centr en discutir el conocimiento que estos estudiantes ten韆n sobre los temas indicados al inicio y t閞mino de la propuesta. Los resultados mostraron una percepci髇 limitada que los estudiantes tienen de su alrededor la cual, sin embargo, se expandi debido a las actividades llevadas a cabo, sobre todo en relaci髇 con la Luna. Trabajar con medidas sistem醫icas revela el manejo cuidadoso de los datos para que sean comprensibles para los estudiantes, as como el trabajo con las sombras para que comprendan primero como se forman estas para despu閟 trabajarlas en Astronom韆. Por 鷏timo, llegamos a la conclusi髇 de que el proceso desarrollado consisti en una etapa inicial de una obra que debe ser profundizado en los a駉s posteriores de la formaci髇 de estos estudiantes. Projeto de pesquisa desenvolvido com 95 alunos do 6 ano do Ensino Fundamental de uma escola p鷅lica estadual de Uberl鈔dia, Minas Gerais. Foi um trabalho cont韓uo, de fevereiro a dezembro de 2013, o qual levou os alunos a participarem de atividades de observa玢o do entorno, dentre ele, o c閡, analisando as mudan鏰s ocorridas. Focamos no estudo das varia珲es de temperaturas, chuvas, dura玢o do dia, varia珲es do tamanho das sombras e mudan鏰s nos aspectos da Lua. Nosso foco de an醠ise centrou-se em discutir os conhecimentos que os referidos alunos tinham acerca dos temas indicados no in韈io e ao t閞mino da implementa玢o da proposta. Os resultados mostraram a percep玢o limitada que os estudantes possuem de seu entorno, todavia, ampliada em fun玢o das atividades desenvolvidas, principalmente no que se refere Lua. O trabalho com medidas sistem醫icas revela o cuidado no tratamento dos dados para que eles se tornem compreens韛eis aos alunos, assim como o trabalho com as sombras sinaliza para que os alunos primeiramente compreendam como as sombras s鉶 formadas para depois trabalhar isso em Astronomia. Por fim, conclu韒os que o processo vivido constituiu-se em uma etapa inicial de um trabalho que deve ser estimulado para os anos subsequentes da forma玢o desses alunos.

Longhini, Marcos Daniel; Gomide, Hanny Angeles

2014-12-01

157

Constru籧~ao de conceitos de f秶sica moderna e sobre a natureza da ci^encia com o suporte da hiperm秶dia (Construction of concepts of modern physics and on the nature of science with the support of hypermedia)  

Microsoft Academic Search

Apresentam-se os resultados de uma pesquisa sobre a constru籧~ao de conceitos de F秶sica Moderna e sobre a natureza da Ci^encia com o apoio da hiperm秶dia, que envolveu a produ籧~ao e avalia籧~ao de um software edu- cacional. A proposta didatica fundamentou-se na Teoria da Aprendizagem de Ausubel, em orienta籧~oes para a implementa籧~ao de sistemas hiperm秶dia educacionais e em abordagens derivadas da

D. I. Machado; R. Nardi

158

High School Students' Previous Knowledge about the Stars. (Spanish Title: Conocimientos Previos de Estudiantes de Secundaria Acerca de Las Estrellas.) O Conhecimento Pr関io de Alunos do Ensino M閐io sobre as Estrelas  

NASA Astrophysics Data System (ADS)

Based on the readings of articles related to Astronomy Education published in Brazil, it was noticed a lack of research on previous knowledge of students about the physical characteristics of stars, a fact that motivated us to develop this study. Previous knowledge of 125 students (approximated 15 years old) constituted the study sample; data was collected through written questionnaires (Appendix A) for analysis. From the content analysis of these responses it was possible to achieve some inferences as, for example, many students have some difficult to develop an explanatory model on the functioning of a star; there are few who say that the stars have a certain length of existence; some students have said that stars have tips; few recognize that a star is formed by a mass of gas; some previous knowledge come from purely visual aspects; furthermore, some students do not have the habit of observing nature in detail. We see this research as a reference in which science teachers can recognize the importance of previous knowledge for practice teaching and acquire resources for planning their lessons. De la lectura de art韈ulos relacionados con la Educaci髇 en Astronom韆 publicados en el Brasil, se encuentra una falta de investigaciones acerca del conocimiento previo de los estudiantes sobre las caracter韘ticas f韘icas de las estrellas, hecho que nos motiv a desarrollar este estudio. Los datos analizados se obtuvieron al aplicar un cuestionario a 125 estudiantes de secundaria, para posteriormente realizar un an醠isis de contenido, tal cuestionario se presenta en el Anexo A. Al realizar el an醠isis de contenido de las respuestas obtenidas, fue posible hacer algunas inferencias, como por ejemplo; muchos estudiantes tienen dificultades para desarrollar un modelo explicativo acerca del funcionamiento de una estrella; pocos estudiantes dicen que las estrellas tienen un cierto tiempo de vida; algunos estudiantes imaginan que las estrellas tienen puntas; pocos reconocen que una estrella es formada por una masa de gas; varios conocimientos previos parten de aspectos puramente visuales; por otro lado, los estudiantes no tienen el h醔ito de observar la naturaleza detalladamente, entre otros problemas. Vemos esta investigaci髇 como una probable fuente de referencia en la que los profesores de ciencias pueden reconocer la importancia del conocimiento previo, y la forma como interfieren con su pr醕tica de ense馻nza, adem醩 de la adquisici髇 de recursos para la planificaci髇 de sus clases. Com base em leituras de artigos relacionados ao ensino de Astronomia publicados no Brasil, verificou-se a inexist阯cia de investiga珲es sobre o conhecimento pr関io de estudantes acerca das caracter韘ticas f韘icas das estrelas, fato que nos motivou a desenvolver a pesquisa apresentada. Os conhecimentos pr関ios de 125 estudantes do primeiro ano do ensino m閐io constitu韗am os dados do estudo, os quais foram inferidos atrav閟 da an醠ise das respostas cedidas em question醨ios impressos (Ap阯dice A). A partir da an醠ise de conte鷇o dessas respostas tornou-se poss韛el realizar algumas infer阯cias como, por exemplo: v醨ios estudantes possuem dificuldade em elaborar um modelo explicativo sobre o funcionamento de uma estrela; s鉶 poucos os que dizem que as estrelas possuem certo tempo de exist阯cia; alguns alunos as imaginam com pontas; poucos reconhecem que uma estrela formada por uma massa de g醩; v醨ios conhecimentos pr関ios partem de aspectos meramente visuais; ainda assim, os estudantes n鉶 possuem o h醔ito de observar a natureza mais detalhadamente, entre outras. Vemos essa pesquisa como uma prov醰el fonte de consulta na qual os professores de ci阯cias poder鉶, al閙 de reconhecer a import鈔cia dos conhecimentos pr関ios para o ensino e como eles interferem em sua pr醫ica, adquirir subs韉ios para o planejamento de suas aulas.

Iachel, Gustavo

2011-12-01

159

Estudio de la estructura logica utilizada en la ensenanza y el aprendizaje de los conceptos sobre el comportamiento de gases en el curso introductorio de quimica a nivel universitario  

NASA Astrophysics Data System (ADS)

El estudio que se presenta es de caracter cualitativo, un estudio multicasos donde se estudia la estructura logica utilizada por cuatro (4) profesores universitarios que ensenan el curso introductorio de quimica, en la planificacion, presentacion y evaluacion del tema sobre el comportamiento de los gases. Se utilizaron varias fuentes de informacion como: cuestionarios de profesores y estudiantes, entrevistas, grabaciones videomagnetofonicas, materiales didacticos y una prueba conceptual, entre otros. La informacion recopilada fue analizada de acuerdo al orden logico del contenido presentado, el estilo de ensenanza del profesor, las tecnicas y estrategias utilizadas para el desarrollo de destrezas de pensamiento, el ambiente fisico en el salon de clase y los instrumentos de evaluacion y avaluo. El estudio demuestra que lo que los profesores piensan y planifican para hacer sus presentaciones no necesariamente es lo que ocurre en el salon de clases. El desarrollo de destrezas de pensamiento, que constituye una prioridad de los profesores, no se elaboran efectivamente. El uso de las estrategias de resolucion de problemas numericos predomino. La participacion del estudiante en el salon de clases fue limitada y no se logro demostrar el desarrollo de las destrezas de pensamiento deseadas. Aunque los profesores tienen su propio estilo de ensenanza, el orden logico del contenido presentado en clase fue el mismo o siguio muy de cerca el orden establecido por el libro de texto. Los profesores utilizaron preferentemente la tiza y la pizarra para sus presentaciones y la dinamica en el salon de clases fue esencialmente tradicional. Los profesores hicieron su presentacion y los estudiantes copiaron pasivamente la informacion. Las evaluaciones de los estudiantes fueron esencialmente, pruebas escritas de seleccion multiple de acuerdo con el estilo en que se les enseno. El avaluo fue casi inexistente. La prueba conceptual administrada revela un aprendizaje pobre en los conceptos mas basicos sobre el comportamiento de los gases. El estudio senala que la ejecutoria del profesor en todos los aspectos de la ensenanza y el aprendizaje es un factor clave que debe darsele prioridad. Se recomienda que el profesor, en general, tenga un conocimiento basico de las teorias de aprendizaje, de los factores que afectan el aprendizaje y las tecnicas y estrategias mas efectivas en el desarrollo de destrezas de pensamiento entre sus estudiantes. La estructura de la disciplina debe incluir tanto lo experimental como lo teorico.

Costa Diaz, Agnes

160

DISTRIBUCION Y DISPONIBILIDAD DE ELEMENTOS POTENCIALMEN- TE TOXICOS EN SUELOS REPRESENTATIVOS DE LA PROVINCIA DE BUENOS AIRES ENMENDADOS CON BIOSOLIDOS  

Microsoft Academic Search

Sewage sludge can be applied to cropland to supply and recycle nutrients and organic carbon. Potentially toxic elements (EPT) in the sludge, however, are of environmental concern. A pot experiment was performed to study the effects of the application of biosolid (BIO) or biosolid containing 30% (P\\/ P) of its own incineration ash (BCEN) on soil properties and chemical extractability

SI TORRI; RS LAVADO

161

DISTRIBUCI覰 DE ESPECIES DE MATORRAL EN SUELOS 罜IDOS Y B罶ICOS DE LA SIERRA DE GRAZALEMA, SUR DE ESPA袮  

Microsoft Academic Search

GALLEGO FERN罭DEZ, J.B. (2003). Shrubland species distribution in acid and basic soils at Grazalema Mountains, South Spain. Anales Jard. Bot. Madrid 60(1): 51-61 (in Spanish). The presence of Mediterranean shrubland woody species on acid or basic soils was studied at Grazalema Mountains. Transects were made at 137 sampling sites in the study area and 74 species were recognized. Phlomis purpurea,

2003-01-01

162

CALIDAD DE LOS SUELOS DEL NORTE DE SANTA FE. EFECTO DE LA GEOMORFOLOG虯 Y EL USO DE LA TIERRA  

Microsoft Academic Search

The objective of this work was to study the effect of the geomorphology and the land use on soil physical-chemical properties in the Chaco forest in Santa Fe, Argentina. Soils were classified according to Soil Taxonomy and characterized by several properties: texture, organic carbon (OC), extractable phosphorus (Pe), soil reaction (pH) and electrical conductivity (CE). An ANOVA was performed for

OLGA SUSANA HEREDIA; LIDIA GIUFFR; FLORENTINO JAVIER GORLERI; MARTA ELVIRA CONTI

163

APLICACI覰 DE LA T蒀NICA DE INTERRUPCI覰 DE FLUJO AL ESTUDIO DEL TRANSPORTE DE SOLUTOS EN COLUMNAS DE SUELO  

Microsoft Academic Search

During soil solute transport events, preferential flow paths generate gradient concentrations between fast and slow moving regions dominated by different pore water velocities. Under stationary water flow conditions, advection and mechanical dispersion are the controlling mechanisms. Under a periodic irrigation regime, amid irrigation events, water flow decreases and solutes become more uniformly distributed through the soil regions due to diffusion.

J. 羖varez-Bened; D. Garc韆-Sinovas; R. Mu駉z-Carpena; S. Bolado

164

Posibilidades de aplicaci髇 de lodos o bios髄idos a los suelos del sector norte de la Regi髇 Metropolitana de Santiago  

Microsoft Academic Search

One of the most negative environmental impacts that have had an explosive growth of Santiago's Metropolitan Region in the last decades, has been the pollution of water courses caused by effluents of waste waters. As a consequen- ce, waste waters are being now treated at national and urban scales, substantia- lly improving their environmental quality. However, treatment processes genera- te,

Carmen Paz Castro; Olivia Henr韖uez; Rodolfo Freres

2007-01-01

165

DISTRIBUCI覰 ESPACIAL DEL CICLO DEL AGUA EN SUELOS FORESTALES CON Pinus radiata DE GALICIA (NO DE ESPA袮)  

Microsoft Academic Search

From 1997 to 1999 rainfall, infiltration and drainage waters were collected in three plots with Pinus radiata cover, located in NW Spain and having similar climate and site (physiography, plan- tation frame, age and height of the trees, etc) conditions. Sampling followed natural rainfall sequences, and throughfall data was obtained at different locations with the aim to stablish the spacial

R. CALVO DE ANTA; M. X. G覯EZ REY

166

CAMBIOS EN EL CONTENIDO DE F覵FORO EN EL SUELO SUPERFICIAL POR LA CONVERSI覰 DE SABANAS EN PINARES  

Microsoft Academic Search

Changes in phosphorus content in the topsoil by the conversion of savanna to pine forest We assessed the changes in P fractions, acid phosphatase activity, and phosphate sorption by the establishment of a pine forest on an acidic, sandy savanna soil. After 24 years, it was found an increase in organic matter and its light fraction content in the topsoil,

Ismael Hern醤dez-Valencia; Montserrat Bautis

167

Cambios en el uso del suelo y deforestaci髇 en el sur de los estados de Campeche y Quintana Roo, M閤ico  

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 Yucat醤 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

168

COMPARACI覰 DE M蒚ODOS PARA EL AN罫ISIS DE MERCURIO EN SUELOS PROCEDENTES DE EL CALLAO, ESTADO BOL蚔AR, VENEZUELA  

Microsoft Academic Search

SUMMARY Mercury levels in soil samples from El Callao, Bol韛ar 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 Dur醤; Melit髇 Adams

169

Uso del suelo y transformaci髇 de selvas en un ejido de la Reserva de la Biosfera Calakmul, Campeche, M閤ico  

Microsoft Academic Search

The transformation of the tropical forest in the La Guadaiupe ejido (rural farming community) located at the Calakmul Biosphere's Reserve (CBR), was evaluated for the period between 1970 and 1995 using historical and geographical approaches as well as a Geographic information System (GIS). The ejido comprised an area of 4 919 ha. 59% of which corresponds to the nuclear zone

Jos Reyes Diaz; Gerardo Garc韆; Ofelia Castillo

170

SELECCI覰 DE UN DISE袿 DE MUESTREO EN PARCELAS EXPERIMENTALES A PARTIR DEL ESTUDIO DE LA VARIABILIDAD ESPACIAL DE LOS SUELOS  

Microsoft Academic Search

Selecting a the sampling design in experimental plots on the basis of the study of the spatial soil variability Data obtained by using a systematic sampling in two contrasting soils in the Venezuelan central plains were used to identify the spatial soil variation and to optimize the sample design for monitoring changes induced by soil management. One of the soils

Carlos Bravo; Francisco Ovalles; Rosa Mary Hern醤dez; Belkys Moreno; Luis Pi馻ngo; Jos Gregorio Villanueva

2004-01-01

171

CONTAMINACI覰 POR METALES PESADOS EN SUELO PROVOCADA POR LA INDUSTRIA MINERA HEAVY METALS POLLUTION IN SOILS DAMAGED BY MINING INDUSTRY  

Microsoft Academic Search

Mining in the study area has been carried out for several centuries, causing environmental alterations, generating poor soils for plant establishment and health hazards for humans. The objective was to evaluate presence of Lead, Cadmium, Zinc and Arsenic in soil with variables: distance to the pollution source and soil depth, hence determining relations with soil physical- chemical characteristics. The study

Soraya Puga; Manuel Sos; Toutcha Lebgue; Cesar Quintana; Alfredo Campos

172

El conflicto de uso del suelo y la calidad de los alimentos The soil use conflict and food quality  

Microsoft Academic Search

We discuss the problems arising from the intensification of the land use conflict on the basis of three main threats that may compromise the food safety and its quality. We focused on: (A) the importance of soil conservation to protect the water resources and the consequences of inadequate soil use planning on the water quality and food, (B)the problem of

P. P閞ez-Rodr韌uez; E. de Blas; B. Soto; X. Pontevedra-Pombal; J. E. L髉ez-Periago

2011-01-01

173

Mixed-Methods Study that Examines Nine Science Teachers' Perceptions of Slooh Robotic Telescope for Teaching Astronomy. (Breton Title: M閠odos Mistos de Estudo que Examinam a Percep玢o de Nove Professores de Ci阯cias sobre o Telesc髉io Rob髏ico Slooh Para Ensino de Astronomia.) M閠odos Mixtos de Estudio que Examinan la Percepcion de Nueve Profesores de Ciencias sobre EL Telescopio Rob髏ico Slooh Para la Ense馻nza de la Astronom韆  

NASA Astrophysics Data System (ADS)

Although previous studies show that robotic telescopes have the potential to enhance student learning, there is comparatively little research that focuses on teacher perceptions of this technology. This study investigates: "what is the academic merit of using SLOOH robotic telescopes to teach astronomy as perceived by science teachers?" Our sample consists of nine science teachers of students aged 13-18 years. Pre- and post-tests, interviews, and surveys were collected during two weeks of a summer online course about robotic telescopes. While pre and post-tests do not reveal a statistically significant gain in astronomy content knowledge, analysis of qualitative data reveals five themes which describe the most important aspects of using SLOOH according to participants: "Images," "Interface," "Classroom Application," "Instructor Impact," and "Logistical Issues." Analysis of these themes suggests that SLOOH can provide an interactive and social learning environment with capabilities to incorporate crossdisciplinary themes. Embora estudos anteriores mostram que os telesc髉ios rob髏icos t阭 o potencial de melhorar a aprendizagem dos alunos, h relativamente pouca investiga玢o focada nas percep珲es de professores a respeito desta tecnologia. Este estudo investiga: "qual o m閞ito acad阭ico da utiliza玢o de telesc髉ios rob髏icos Slooh para ensinar astronomia, tal como percebido pelos professores de ci阯cias?" Nossa amostra composta por nove professores de ci阯cias de estudantes com idades entre 13-18 anos pr e p髎-testes, entrevistas, e levantamentos foram coletados durante duas semanas de um curso on-line de ver鉶 sobre telesc髉ios rob髏icos. Enquanto os testes pr e p髎 n鉶 revelaram um ganho estatisticamente significativo no conhecimento do conte鷇o astronomia, a an醠ise de dados qualitativos revela cinco temas que descrevem os aspectos mais importantes da utiliza玢o Slooh de acordo aos participantes: "Imagens", "Interface", "Aplica玢o em sala de aula", "Impacto no Instrutor" e "Quest鮡s log韘ticas". A an醠ise desses temas sugere que Slooh pode proporcionar um ambiente de aprendizagem interativo e social com capacidade de incorporar temas interdisciplinares. Aunque estudios previos muostraron que los telescopios rob髏icos tienen el potencial de mejorar el aprendizaje del estudiante, hay relativamente poca investigaci髇 centrada en las percepciones de l髎 profesores respecto de esta tecnolog韆. Este estudio investiga: "縞u醠 es el m閞ito acad閙ico de la utilizaci髇 de telescopios rob髏icos SLOOH para ense馻r astronom韆 seg鷑 la percepci髇 de los profesores de ci阯cias?" Nuestra muestra est formada por nueve profesores de ciencias de estudiantes entre 13 a 18 a駉s pre-y post-tests, entrevistas, y. encuestas se recogieron durante dos semanas de un curso on-line de verano sobre los telescopios rob髏icos. Si bien l髎 tests antes y despu閟 de las pruebas no revelaron un aumento estad韘ticamente significativo en el conocimiento de contenido astron髆ico, el an醠isis de l髎 datos cualitativos revel cinco temas que describen los aspectos m醩 importantes de la utilizaci髇 de SLOOH de acuerdo con los participantes:. "Im醙enes", "Interface", "aplicaci髇 en el aula", "Impacto en el Instructor" y "problemas log韘ticos" . El an醠isis de estos temas sugiere que SLOOH puede proporcionar un ambiente de aprendizaje interactivo y social, con capacidad para incorporar temas transversales.

Gershun, Daniel C.; Slater, Timothy F.; Berryhill, Katie J.

2014-07-01

174

Reflexiones Epistemol骻icas sobre la Investigaci髇 Cualitativa en  

Microsoft Academic Search

It is usually supposed qualitative research is an alternative to quantitative \\/ positive social science and is much easier to apply. This essay says there are no arguments for that beliefs. From this point, it describes what computer analyzes can say qualitative research in the social sciences. En las Ciencias Sociales existe una estrategia metodol骻ica que ha cobrado un especial

Ciencias Sociales; Adri醤 Scribano

175

Efecto de la oxitetraciclina sobre el cart韑ago  

Microsoft Academic Search

In general there has been concern about the possible systemic effects of the agents used in synoviorthesis specially in skeletally immature patients, even more than the local effects in the articular cartilage wich is exposed to this substances, without knowing the short and long term consequences. In this experimental study in animals we injected the knees of 64 rabbits with

Jorge Eduardo P醗z; Richard Hennessey Montilla; Jos Armando Amador; Camilo Mart韓ez; Unidad de Ortopedia

176

INVESTIGACIN Instituto de Investigaciones sobre Recursos  

E-print Network

la agricultura 路 Manejo y calidad del agua costera y subterr谩nea 路 Estudios hidrol贸gicos (H&H) y 路 Manejo de erosi贸n y sedimentaci贸n 路 Manejo y calidad de agua superficial 路 Manejo y tratamiento de aguas usadas 路 Manejo y control de fuentes dispersas 路 Manejo y control de inundaciones 路 Mapas de riesgos y

Gilbes, Fernando

177

Reflecting on Culture. (Reflexionando Sobre la Cultura.)  

ERIC Educational Resources Information Center

The article comments on two articles, previously published in the same journal, which address the relationship between the "little" cultural tradition of Chicanos, Cubans, and Puerto Ricans and the "great" tradition of Hispanic arts and letters. Notes similarities among these groups and calls for the banding together of Hispanic artists. (SB)

Irizarry, Estelle

1980-01-01

178

SOBRE LOS OR虶ENES DE LA SOCIOLOG虯  

Microsoft Academic Search

This brief article is devoted to reflecting on the genesis of sociology from a theoretical and epistemiologic perspective. We have a look at the categorial building of sociology from the historical and structural processes of knowledge and culture. We should highlight the importance of the Industrial Revolution, and the French Revolution, the development of science, the Enlightenment, historicism, sensism, and

OCTAVIO U袮 JU罵EZ

179

Resoluci髇 de consultas an髇imas sobre DNS  

Microsoft Academic Search

Resumen桳a utilizaci髇 de DNS como mecanismo base de nuevos servicios telem醫icos basados en resoluci髇 de nombres puede suponer riesgos en seguridad y privacidad. La informaci髇 intercambiada entre clientes y servidores viaja sin ning鷑 tipo de protecci髇. Dicha informaci髇 puede ser capturada por malware o servidores de acceso deshonestos y acabar siendo vendida para su utilizaci髇 en t閏nicas de spamming o

Joaqu韓 Garc韆-Alfaro; Sergio Castillo-P閞ez

180

Evidencia sobre las Desinflaciones: Experiencia Internacional  

Microsoft Academic Search

En el presente art韈ulo se analizan las pol韙icas desinflacionarias utilizadas para lograr el paso de inflaci髇 moderada a inflaci髇 de un d韌ito en nueve pa韘es cuya estructura es semejante a la colombiana y cuyo 閤ito desinflacionario ha sido sostenible. Estos son: Chile, Bolivia, Grecia, Espa馻, Portugal, Irlanda, Israel, Nueva Zelandia e Islandia. Adem醩, para cada uno se utilizan dos criterios

Carlos Humberto Cardona; Adriana Pont髇; Eduardo Sarmiento

1998-01-01

181

Sobre la importancia de la alfabetizacin informtica  

E-print Network

computadora, scanners y otros instrumentos inform醫icos a los que deben agregarse productos software tales instrumento auxiliar en diferentes procesos de ense馻nza-aprendizaje que van desde la educaci髇 formal en expertos, el uso de instrumentos multimediales para la capacitaci髇, etc. En muchas escuelas el

Spagnolo, Filippo

182

INVESTIGACIONES SOBRE CONOCIMIENTOS POL蚑ICOS Y EDUCACI覰 CIUDADANA  

Microsoft Academic Search

Citizenship education appears like a field of renewed interest due to the new socioeconomic, political and cultural scenarios but with a delayed production in psycho-educative research. A debate is sustained by different conceptions about citizenship education, including the election of its key competences and the different emphasis granted to knowledge, attitudes, values and abilities, assigned to form future citizens. In

Mar韆 Silvina

183

SOBRE LA CONECTIVIDAD DEDUCIDA DE ENSAYOS  

E-print Network

de Jacob: Test muy constante y adem谩s Test =Teff (cuestionado reciente- mente por Copty & Findikakis [2004] que dicen que Test Teff ) Sest muy variable e indicador de conexi贸n con punto bombeo #12;S-33 S l铆nea roja es aprox. T=0.30 m2/d Seg煤n los resultados de Willman et al. [2005, hopefully] Twell> Teff

Polit猫cnica de Catalunya, Universitat

184

A Proposed Activity for a Meaningful Learning about the Moon Phases. (Breton Title: Uma Proposta de Atividade Para a Aprendizagem Significativa sobre as Fases da Lua.) Una Actividad Propuesta Para EL Aprendizaje Significativo Acerca de Las Fases de la Luna  

NASA Astrophysics Data System (ADS)

This paper presents one of the concepts of Astronomy and its consequent failure in teaching this topic in high school, even when the official documents point out the necessity of Astronomy teaching at this school level. Among the spontaneous conceptions in Astronomy that high school students carry with them, even after the end of the school, we emphasized in this research the Moon phases. The development of different strategies in relation to traditional methods, aimed to teaching-learning process on this topic was considered in this study. These strategies were devised based on the reference frame of the Meaningful Learning, as elaborated by Ausubel. The proposals presented here include the active participation of students in experimental activities and other didactic activities, for their continuous evaluation during the process. These activities finished with a Comics elaboration about the Moon phases. Therefore, the objective of this paper is to present a proposal for differentiated teaching activity about Moon phases supported by the theoretical principles of Meaningful Learning at Physics classes. Este texto foca um dos conte鷇os de Astronomia e a consequente falha no ensino deste tema no ensino m閐io, apesar de os documentos oficiais apresentarem a necessidade de se trabalhar a Astronomia neste n韛el de ensino. Dentre as concep珲es alternativas em Astronomia que os alunos do ensino m閐io carregam consigo, mesmo ap髎 o t閞mino dos estudos, destacamos, nesta pesquisa, o fen鬽eno das fases da Lua. O desenvolvimento de estrat間ias diferenciadas em rela玢o ao ensino tradicional, visando o processo de ensino-aprendizagem sobre este tema, foi contemplado neste trabalho como um dos resultados obtidos sob a luz dos referenciais da aprendizagem significativa, fundamentados em Ausubel. Segundo a proposta aqui apresentada, a participa玢o ativa dos alunos na execu玢o de uma atividade experimental e outras atividades did醫icas, que visam sua cont韓ua avalia玢o durante o processo, culmina com a elabora玢o de uma hist髍ia em quadrinhos envolvendo as fases da Lua. Portanto, o objetivo deste trabalho apresentar uma proposta de atividade did醫ica diferenciada sustentada pelos princ韕ios te髍icos da aprendizagem significativa aplicada ao ensino das fases da Lua durante as aulas de F韘ica no ensino m閐io. En este trabajo se presenta uno de los contenidos de la Astronom韆 y el evidente fracaso en la ense馻nza del tema en la escuela secundaria, a pesar del hecho que los documentos oficiales apuntan para la necesidad de trabajar contenidos de Astronom韆 en este nivel. Entre los conceptos alternativos en Astronom韆 que los alumnos secundarios llevan consigo, a鷑 despu閟 de terminados los estudios, destacamos aqu el fen髆eno de las fases de la Luna. El desarrollo de diferentes estrategias en relaci髇 con los m閠odos tradicionales, dirigidas al proceso de ense馻nza-aprendizaje en este tema fue considerado en este trabajo como uno de los resultados obtenidos a la luz de los referenciales del aprendizaje significativo, tal como fueron fundamentados por Ausubel. Seg鷑 la propuesta que aqu se presenta, la participaci髇 activa de los estudiantes en la ejecuci髇 de una actividad experimental y otras actividades educativas destinadas a la evaluaci髇 continua durante el proceso culmin en la elaboraci髇 de una historieta respecto de las fases de la Luna. Por lo tanto, el objetivo de este trabajo es presentar una propuesta de actividad de ense馻nza diferenciada con el apoyo de los principios te髍icos del aprendizaje significativo aplicado a la ense馻nza de las fases de la luna durante las clases de f韘ica del ciclo secundario.

Martins, Bruno Andrade; Langhi, Rodolfo

2012-12-01

185

O DEBATE BRASILEIRO SOBRE PLURIATIVIDADE: IMPLICA钦ES SOBRE O DESENVOLVIMENTO RURAL E AS POL蚑ICAS P贐LICAS  

Microsoft Academic Search

O fen鬽eno da pluriatividade tem sido um tema bastante debatido e controverso. Nesse debate destacam-se duas perspectivas te髍icas que polarizam o debate que s鉶: a do 搉ovo rural e a da pluriatividade como 揺strat間ia de reprodu玢o social. Essas perspectivas, apesar de v阤m esse fen鬽eno como eixo din鈓ico para o desenvolvimento do meio rural, possuem interpreta珲es diferentes do que vem a

Raquel Pereira Souza; Marcelo Santos Souza

2008-01-01

186

Un estudio exploratorio sobre el desarrollo de creencias sobre s韓tomas como se馻les de hipertensi髇 arterial  

Microsoft Academic Search

Aunque la hipertensi髇 arterial es un trastorno asintom醫ico, muchos pacientes hipertensos est醤 con- vencidos de experimentar s韓tomas indicadores de los cambios en su tensi髇 arterial (TA), y los con- sejos y prescripciones m閐icas pueden verse afectados por estas creencias. Diversos estudios han mos- trado que los pacientes hipertensos usan con frecuencia s韓tomas como indicadores del estado de su tensi髇 arterial

Genoveva Granados G醡ez; Jes鷖 Gil Roales-Nieto; Jos Luis; Ybarra Sagarduy

2006-01-01

187

CORRECCI覰 DE LA ACIDEZ DEL SUELO CON CA Y MG Y SU EFECTO EN EL DESARROLLO DEL SISTEMA RADICAL DEL PALMITO EN LA ETAPA DE PREVIVERO1  

Microsoft Academic Search

Ameliorization of soil acidity with Ca and Mg on the development of peach palm root system at the pre-nursery growth stage. The effect of ameliorization of soil acidity with different sources of Ca and Mg on the initial development of the root system of peach palm was evaluated under nursery conditions. Soils classified as Andisol and Ultisol were used, as

Rafael E. Salas; Thomas J. Smyth; Danilo Alp韟ar; Jimmy Boniche; Alfredo Alvarado; Anthony Rivera; Nota T閏nica

2002-01-01

188

RELACI覰 SUELO-罵BOL Y FACTORES DE SITIO, EN PLANTACIONES J覸ENES DE TECA (Tectona grandis), EN LA ZONA OESTE DE LA CUENCA DEL CANAL DE PANAM  

Microsoft Academic Search

Recibido: 07\\/12\\/04 Aceptado: 01\\/03\\/05 RE SU MEN Mediante la utilizaci髇 de un muestreo factorial estratificado con 4 repeticiones (3x3x4) se seleccionaron 36 parcelas permanentes de medici髇 en plantaciones de teca en la zona oeste de la cuenca del Canal de Panam. En la estratifi- caci髇 se emplearon como criterios el incremento medio anual (IMA) en altura total y la pendiente

Manuel Mollinedo; Luis Ugalde; Alfredo Alvarado; Jean Mark Verjans; Luis Carles Rudy

2005-01-01

189

La fragmentaci髇 del bosque mes骹ilo de monta馻 y patrones de uso del suelo en la regi髇 oeste de Xalapa, Veracruz, M閤ico  

Microsoft Academic Search

The destruction of tropical montane cloud forest in the western region of Xalapa, Veracruz, has accelerated considerably in the last few decades. This paper objective was to determine the degree and pattern of fragmentation of cloud forest in this region. Thirty-three aerial photographs, scale 1: 20 000 (INEGI, 1993), were digitized and photo-interpreted to generate maps of vegetation and land-use.

Guadalupe Williams-Linera; Robert H. Manson; Eduardo Isunza Vera

190

Relaci髇 entre Condiciones de Suelo y Manejo de Huertas de Nogal Pecanero Carya illinoensis Koch con la Din醡ica de la Pudrici髇 Texana, causada por Phymatotrichum omnivorum Duggar  

Microsoft Academic Search

From 1995 to 1998, 26 plots of three ha each were selected in commercial walnut orchards. The objective of the survey was to relate the dynamics of Phymatotrichum root rot with orchard management and soil condition. The management variables were: age of the trees, plantation distance, trees\\/ha, pest management, number of irrigations and incidence of diseased trees (in 1995); for

Jos Alfredo Samaniego-Gaxiola; Teodoro Herrera-P閞ez; Jes鷖 Santamar韆-C閟ar

2001-01-01

191

CARACTERIZACI覰 Y CLASIFICACI覰 DE SUELOS DE LAS MARISMAS DE LA R虯 DE ORTIGUEIRA EN RELACI覰 CON SU POSICI覰 FISIOGR罠ICA Y VEGETACI覰 (GALICIA-NO DE LA PEN蚇SULA IB蒖ICA)  

Microsoft Academic Search

Analysis was made of the redox conditions and Fe species present in 8 soil profiles from the R韆 de Ortigueira (N Galicia). The soils were from different types of salt marsh (high and low), dif- ferent physiographical positions and had different types of plant cover. The Fe species considered were: amorphous or poorly crystalline oxyhydroxides of Fe (soluble in ascorbate-citrate),

X. L. OTERO; F. MAC虯S

192

La corrosin es un problema permanente en la economa y la industria en general, y en particular, en el entorno ambiental: agua, suelo y atmsfera. Los contaminantes  

E-print Network

humana, alteran la vida acu谩tica y la propia calidad del agua. El control de la corrosi贸n contribuye a mantener la calidad del medio ambiente, lo cual ya es considerado como una disciplina central en la ciencia conocimiento para el control de la corrosi贸n en las industrias, la infraestructura y los ambientes afectados y

193

NIVELES EST罭DAR DE Cu, Zn Y Co Y EVALUACI覰 DE LA CONTAMINACI覰 EN LOS SUELOS DE LOS INVERNADEROS DE LA COMARCA DEL PONIENTE (ALMER虯, ESPA袮)  

Microsoft Academic Search

Total concentration of Cu, Zn and Co of natural soils and greenhouse soils from western Almer韆 (Spain) has been determined. It was established the baseline concentrations, background levels and reference values. These were, respectively, the followings (mg Kg-1): Cu 5-25, 13-14 and 23-25; Zn 29-394, 139-155 and 281-394; Co 8-22, 14 and 20-22 for natural soils. The baseline concentration and

C. GIL; J. RAMOS-MIRAS; R. BOLUDA

194

EMERGENCIA Y CRECIMIENTO DE MA蚙 EN UN SUELO CONTAMINADO CON PETR覮EO CRUDO EMERGENCE AND GROWTH OF MAIZE IN A CRUDE OIL POLLUTED SOIL  

Microsoft Academic Search

Some agricultural soils have been severely affected by oil industry activities; therefore, it is necessary to generate technologies for their recuperation. Phytoremediation uses plants whose rhizosphere contributes to the detoxication of soils, polluted by organic and inorganic compounds. In order to know the capacity of maize to emerge and grow in soil, artificially polluted with crude oil, a greenhouse experiment

Evangelina E. Qui駉nes-Aguilar; Ronald Ferrera-Cerrato; Francisco Gavi-Reyes; Luis Fern醤dez-Linares; Refugio Rodr韌uez-V醶quez; Alejandro Alarc髇

2003-01-01

195

EVALUACION DE ALGUNAS PROPIEDADES FISICAS DE SUELOS LUE- GO DE LA INTRODUCCION DE LABRANZAS VERTICALES EN UN SUE LO BAJO SIEMBRA DIRECTA  

Microsoft Academic Search

-3 in SD and 1.23 Mg m -3 in LV. At 13-18 cm depth the ?a values were similar in both treatments. The relative ?a was 91 % for SD and 84 % for LV. The aggregate stability index were 71 % and 66 % for SD and LV respectively. Besides the maximum mechanical resistance in SD, the corn yield

E ELISSONDO; JL COSTA; E SUERO; KP FABRIZZI; F GARCIA

2001-01-01

196

Memories of Astronomy Education in Brazil: Clippings from the Discourses of Interviewed Researchers on the Subject. (Spanish Title: Memorias de la Educaci髇 en Astronom韆 en Brasil: Recortes de los Discursos de Investigadores Entrevistados Acerca del Tema ) Mem髍ias da Educa玢o em Astronomia no Brasil: Recortes a Partir das Falas de Pesquisadores Entrevistados sobre o Tema  

NASA Astrophysics Data System (ADS)

This paper presents a historical retrospective concerning data from a research in Astronomy Education in Brazil, after 1973. It was organized on the basis of the speech analysis of national researchers considered references in this field by their peers. Furthermore, it was elaborated on the basis of other studies from the areas of Science Education, Physics and Astronomy. This historical overview was developed in order to facilitate understanding of the contexts in which the interviewed researchers have developed professionally. Moreover, we attempted to recover the memory of the growing field of research in Astronomy Education in the country. We believe that the history presented can help those trying to understand the past in an attempt to resolve current and future demands. Se presenta en este art韈ulo una retrospectiva hist髍ica referente a datos provenientes de la investigaci髇 en ense馻nza de la astronom韆 en el Brasil, despu閟 de 1973, organizada sobre la base del an醠isis de los discursos de los investigadores nacionales considerados referencias en este campo, y tambi閚 en la lectura de las publicaciones en las 醨eas de Ense馻nza de las Ciencias, F韘ica y Astronom韆. Este repaso hist髍ico se desarroll con el fin de facilitar la comprensi髇 de los contextos en los que los investigadores entrevistados se han desarrollado profesionalmente. Por otra parte, se intent recuperar la memoria del creciente campo de la investigaci髇 en Educaci髇 en Astronom韆 en el pa韘. Creemos que el relato presentado puede contribuir a quien trata de comprender el pasado, en un intento de resolver las demandas actuales y futuras. Relata-se neste artigo uma retrospectiva hist髍ica referente a dados provenientes de pesquisa em Educa玢o em Astronomia no pa韘, p髎 1973, organizada com base na an醠ise das falas de pesquisadores considerados refer阯cias nacionais nesse campo, como tamb閙 na leitura de publica珲es das 醨eas de ensino de Ci阯cias, F韘ica e Astronomia. Tal panorama hist髍ico foi desenvolvido com o intuito de favorecer nossa compreens鉶 sobre os contextos nos quais os pesquisadores entrevistados se desenvolveram profissionalmente. Ademais, buscou-se recobrar a mem髍ia do crescente campo de pesquisa em Educa玢o em Astronomia no pa韘. Entendemos que o hist髍ico apresentado possa contribuir para com os que buscam entender o passado na tentativa de solucionar demandas atuais e futuras.

Iachel, Gustavo; Nardi, Roberto

2014-12-01

197

Influ阯cia do Shiatsu sobre a press鉶 arterial sist阭ica  

Microsoft Academic Search

SUMMARY Introduction. Shiatsu is pressure applied with the fingers on reflex points. The objective is to verify the influence of the Shiat - su on blood pressure. Method. The population was composed by seven subjects of both genders, aged between 18 and 40 years old, without historic of significative blood pressure variation. The blood pressure was measured at six moments,

Caio Imaizumi; Teresa Cristina de Carvalho; Adriana Domingues Anselmo; Andreia de Oliveira Joaquim; Carlos Mendes Tavares; Luiz Carlos de Abreu

198

Algunas falacias sobre la 'nueva economa' GUILLERMO DE LA DEHESA  

E-print Network

crean redes, pero esas redes necesitan vender algo, transportarlo y entregarlo al cliente o al coste, de mayor productividad y de mayor rentabilidad) la creaci髇 de las nuevas redes de informaci髇, al final, a colonizar dichas redes y afianzarse a鷑 m醩 en sus sectores productivos generando menores

Bilbao Arrese, Jes鷖 Mario

199

Sobre o uso das s閞ies de Puiseux em mecanica celeste  

NASA Astrophysics Data System (ADS)

Neste trabalho apresentada uma demonstra玢o do uso dos diferentes desenvolvimentos em s閞ies para as equa珲es de perturba玢o em Mec鈔ica Celeste no marco Hamiltoniano. Em trabalhos cl醩sicos como os de Poincar (Poincar, 1893) por exemplo, j esta planteado o uso de pot阯cias n鉶 inteiras no pequeno par鈓etro, o que evidencia a n鉶 analiticidade das fun珲es quando uma resson鈔cia ocorre. Nestes trabalhos os desenvolvimentos s鉶 na ra韟 quadrada da massa de J鷓iter (o pequeno par鈓etro). Mais recentemente (Ferraz-Mello, 1985) outros tipos de desenvolvimentos foram aplicados modificando substancialmente as ordens de grandeza e a velocidade de converg阯cia das s閞ies. Com esta abordagem, os desenvolvimentos foram expressados em termos da ra韟 c鷅ica do pequeno par鈓etro. Neste trabalho apresentamos um enfoque geral, onde os diferentes tipos de desenvolvimentos em s閞ies de Puiseux (Valiron, 1950) s鉶 obtidos a partir da aplica玢o de Teorema de Prepara玢o de Weierstrass (Goursat, 1916) considerando a equa玢o de Hamilton-Jacobi como uma equa玢o alg閎rica. Os resultados s鉶 aplicados ao problema restrito dos tr阺 corpos em resson鈔cia de primeira ordem e, dependendo da grandeza da excentricidade do aster骾de em rela玢o de J鷓iter, obtemos os diferentes desenvolvimentos, em ra韟 quadrada ou ra韟 c鷅ica da massa de J鷓iter.

Miloni, O. I.

2003-08-01

200

Sobre el nacionalisme a Mallorca (1890-1936)  

Microsoft Academic Search

Aquest article analitza l抏voluci dels grups, entitats i partits nacionalistes o regionalistes a Mallorca des dels seus or韌ens fins al comen鏰ment de la Guerra Civil de 1936. L抋utor tamb estudia l抋rrelament social, el pensament pol韙ic i els vincles amb els altres territoris catalanoparlants.

Antoni Marimon Riutort

2008-01-01

201

Estudios sobre Educacion, 2002 (Studies on Education, 2002).  

ERIC Educational Resources Information Center

This scholarly journal deals with the study of education. Articles in this second issue are: "La Vertebracion Academica de la Formacion Inicial del Profesorado" (The Academic Backbone of the Initial Formation of Teachers) (Jose M. Esteve); "Deficiencia Visual en el Nino" (Visual Deficiency in the Young Child) (Feli Peralta; Juan Narbona); "The

Estudios sobre Educacion, 2002

2002-01-01

202

Formaci髇 de creencias sobre falsos s韓tomas en pacientes con hipertensi髇  

Microsoft Academic Search

Formation of beliefs about false symptoms in patients with hypertension. Hypertension is a major health problem and adherence to treatment is a critical factor for patients with this health condition. Noncompliance has been identified as the predominant reason for failure of hypertension therapy. Although it is generally assumed to be a silent disease and health professionals believe that blood pressure

Genoveva Granados G醡ez; Jes鷖 Gil Roales-Nieto

2005-01-01

203

Creencias sobre la madurez psicol骻ica y desarrollo adulto  

Microsoft Academic Search

Title: Beliefs about psychological maturity and adult development Abstract: Normative beliefs about the human life cour- se, especially the psychological change expected, are important for the self-perception of adult subject of his own development. This empirical study concerns the lay perspective, and has the aim of inquiring into implicit knowledge about psychological maturity that is adopted by the Spanish adult

Juan Jos Zacar閟 Gonz醠ez; Emilia Serra Desfilis

204

OS EFEITOS DA QUALIDADE DO ENSINO SOBRE O CRESCIMENTO ECON訫ICO  

Microsoft Academic Search

This article analyzes the effects of quality schooling on economic growth, focusing mainly the empirical aspects of this line of research. The text aims to answer fundamental questions put forward by recent literature: What effects education had on economic growth? Has the increase of average schooling affected equally both developed and developing countries? To answer these questions, the most relevant

Fernando Garcia; Tha韘 Pons; Caio Mussolini

2005-01-01

205

Estudio piloto sobre el l醩er diodo en la cirug韆 estapedial  

Microsoft Academic Search

Stapes surgery has a long history. While the results are good, there is a possibility of complications that can lead to a worsening of hearing. The objective of this study was to study hearing in patients undergoing surgery using 980Nm Diode laser in the immediate postoperative period. In no case was the bone threshold worse in the first audiometry control

Mar韆 Luisa Navarrete; Rafael Boemo; Mohamed Darwish; Jes鷖 Monz髇; Pedro Rojas

2010-01-01

206

RESOLUO N. 01/PPGAS/2012 Dispe sobre os critrios para  

E-print Network

professores no Programa de P髎- Gradua玢o em Antropologia Social da Universidade Federal de Santa Catarina Antropologia Social no uso de suas atribui珲es, considerando o que disp鮡 a resolu玢o 05/CUN/2012, o Regimento do Programa de P髎-Gradua玢o em Antropologia Social da UFSC e tendo em vista necessidade de atualizar

Floeter, Sergio Ricardo

207

Desafios de uma exposi玢o sobre nanoci阯cia e nanotecnologia  

Microsoft Academic Search

The development of an interactive exhibition on nanoscience and technology in Brazil has inherent challanges. To present a scientific-technological area still under development, and yet unknown by most of the public, leads to a (re)consideration on the role of science museums and science centers in the formation and consolidation of the scientific practice itself. Museogrphically, the exhibition faces the challange

Sandra Murriello; Djana Contier; Marcelo Knobel

2006-01-01

208

Spina Bifida. Fact Sheet = Espina Bifida. Hojas Informativas Sobre Discapacidades.  

ERIC Educational Resources Information Center

This fact sheet offers definitions of the three types of spina bifida (spina bifida occulta, meningocele, and myelomeningocele), outlines their incidence, describes characteristics of individuals with spina bifida, and reviews educational implications. The fact sheet discusses the need for many children with myelomeningocele to learn to manage

National Information Center for Children and Youth with Disabilities, Washington, DC.

209

Prstamo domiciliario de los fondos documentales Informacin sobre recursos audiovisuales  

E-print Network

para uso docente Servicios Aula multimedia Elaboraci贸n de materiales digitales docentes Cursos de P谩gina del Profesor Soporte t茅cnico a la plataforma virtual de uso docente. Informaci贸n m谩s detallada en

Autonoma de Madrid, Universidad

210

Sobre los Contenidos Gramaticales en el Aula de Lengua Extranjera  

Microsoft Academic Search

The role of grammar in the foreign language classroom has been widely questioned in language teaching methodology. The positions have oscillated between those who have rejected the possibility of including grammar contents and those that have used grammar like a kernel of the learning process. The work that we present here is based on two fundamental ideas: (1) grammar must

Nuria Campos Carrasco; P. Pablo Dev韘 M醨quez

2008-01-01

211

SOBRE AULAS DE F蚐ICA E AMBIENTES DE APRENDIZAGEM  

Microsoft Academic Search

Resumo: Os primeiros resultados de uma experi阯cia did醫ica utilizando um ambiente de aprendizagem, denominado Espa鏾 Virtual de Aprendizagem (EVA) em apoio a atividades presenciais, realizada no CEFET -Campos\\/RJ apontam que o f髍um deste ambiente teve alto n韛el de aceita玢o e contribuiu para melhorar a qualidade das aulas de F韘ica no Ensino M閐io. Para que essa primeira avalia玢o tenha sido confirmada

Ernesto Macedo Reis; Mar韑ia Paix鉶 Linhares; Norte Fluminense

212

Um Olhar sobre "Beleza Americana" (A Look at "American Beauty").  

ERIC Educational Resources Information Center

Discusses the film "American Beauty" in light of a reading of Karl Marx. Finds that the film shows the circularity which marks bourgeois society, even though the rhythm of industry and renovation of the society masks it. States that Marx praises the industry, invention, and innovation of the bourgeoisie. (BT)

Bissoto, Maria Luisa

2000-01-01

213

Aspectos generales sobre el dolor osteomuscular en el baile flamenco  

Microsoft Academic Search

IntroductionFlamenco dancers are susceptible to pain from their activity, which can be an important limitation. This study has aimed to discover what are the most common locations and what variables they are related to in order to develop more efficient care plans and preventive medicine measures.

J. L. Castilla-Cubero; A. S. Jim閚ez-Sarmiento

2011-01-01

214

COMPORTAMENTO E DESEMPENHO DE WTUD SOBRE PAVIMENTO ASF罫TICO DELGADO  

Microsoft Academic Search

Field data concerning temperatures and thermal differentials in an ultra-thin whitetopped (UTW) pavement achieved during four seasons are presented and discussed herein, fulfilling a previous and preliminary analysis presented by the authors. Present results are complemented by load tests over the pavements which allowed to verify field stresses as well as numerical analysis coherence for design of such a kind

Deividi da Silva Pereira; Jos Tadeu Balbo

215

Considera珲es sobre a preven玢o do c鈔cer de mama feminino  

Microsoft Academic Search

Abstract Breast cancer control should place emphasis on preventing cancers or detecting cases in early stages. Prevention not only focuses on the risks associated with breast cancer but also on protective factors. Some factors that increase breast cancer risk, such as postmenopausal obesity, high-dose exposure to ionizing radiation, exposure to pesti- cides\\/organochlorines and tobacco use, are modifiable; other risk factors,

Luiz Claudio Thuler

216

OS RECENSEAMENTOS DEMOGRAFICOS : UMA FONTE DE INFORMAO SOBRE A FILIAO  

E-print Network

PHILIPPE WANIEZ * VIOLETTE BRUSTLEIN ** DORA RODRIGUES HEES (Colaboradora) *** N um artigo pubicado em 1997 BRUSTLEIN DORA RODRIGUES HEES (COLABORADORA) 6 t閏nicas ligadas escolha de softwares de cr韙ica autom醫ica

Boyer, Edmond

217

Consideraciones sobre la implementaci髇 de tecnolog韆 educativa en Am閞ica Latina  

Microsoft Academic Search

Los pa韘es de Am閞ica Latina han decidido implementar pol韙icas para establecer cambios en los modelos educativos que lleven a conseguir una educaci髇 adecuada a las necesidades e intereses de los estudiantes. Esta sociedad, llamada Sociedad de la Informaci髇, requiere la adquisici髇 permanente de competencias diversas para que los individuos puedan desempe馻rse y adaptarse a situaciones laborales cambiantes. Un elemento transversal

Miguel Esparza Ochoa

2011-01-01

218

METODOLOG虯 DE DISE袿 SOC CON OPENRISC SOBRE FPGA  

Microsoft Academic Search

The increasing complexity of microprocessor based System-on-Chip (SoC) has made necessary the adoption of co-design methodologies with a high level of abstraction. These methodologies, highly dependent on the selected processor and the implementation technology, are becoming increasingly popular because of the growing rise of free hardware, which has made SoC design accessible to new big market niches and user groups

Jos I. Villar; Manuel J. Bellido; Enrique Ost鷄; David Guerrero; Jorge Juan; Alejandro Mu駉z

219

Preguntas sobre pagos Dana-Farber Cancer Institute y Children's  

E-print Network

bien Pagos para Oncolog铆a de Radiaci贸n 617-732-8434 Consejeros financieros Dana m茅dica. Comun铆quese con un consejero financiero de DF/CHCC en uno de los siguientes n煤meros. Children n煤meros que debe usar para comunicarse con los servicios financieros y de pagos. #12;Primer paso: Entienda

Liu, Xiaole Shirley

220

REVISI覰 SOBRE EL TRASPORTE DE CARGA EN POL蚆EROS CONDUCTORES  

Microsoft Academic Search

This paper is a contribution of the Theoretic and Computational Physics Group GFTC as a support to experimentals development that Surfaces Electrochemical and Corrosion Group GSEC effects. You put forward a revision of the concepts of solit髇, polar髇 and bipolar髇 also of the experimental results and perspectives that you find in a field of conductive polymerics. All this with on

Oscar Y. Fajardo; Ra鷏 M. Torres; Fernando. Naranjo; Siervo Ramirez; E. Vera

221

ALGUMAS CONSIDERA钦ES SOBRE A EXPLORA敲O DO TRABALHO INFANTIL  

Microsoft Academic Search

RESUMO: A explora玢o do trabalho infantil n鉶 se restringe a apenas alguns pa韘es. um fato que ocorre em todo mundo. No entanto, a maioria dessas crian鏰s se encontra nos pa韘es em desenvolvimento. H milh鮡s de crian鏰s que trabalham, umas em tempo integral e outras, combinam o trabalho com os estudos e com outras atividades n鉶-econ鬽icas. Milh鮡s de crian鏰s fazem

Juliana Franchi da Silva; Sabrina L韑ian Belusso; Adayr da Silva Ilha

222

INFORME SOBRE LA MARCHA DE LA UNIVERSIDAD SIMN BOLVAR  

E-print Network

Universidad Julio Septiembre 2010 iii INDICE DE CUADROS N 1 Presupuesto de Egreso Por Partida al 30 de Septiembre 2010. P醙 3 N 2 Presupuesto de Egreso Por Proyecto al 30 de Septiembre 2010. 4 N 3 Inflaci髇 30 de Septiembre de 2010. 13 N 12 Costo Acad閙ico Promedio por Estudiante al 30 de Septiembre de

V醩quez, Carlos

223

Captulo 37 Nocoes Basicas Sobre Espacos de Hilbert  

E-print Network

?篶os de Hilbert... 3 John von Neumann (1903--1957). 4 Nota hist??orica. Dois dos trabalhos seminais de von apontada por diversos autores, mas foi especialmente von Neumann 3 quem mais claramente destacou sua relev Neumann a respeito s?漚o: J. von Neumann, `` ? Uber die

Barata, Jo茫o Carlos Alves

224

Algoritmo jer醨quico de navegaci髇 sobre mapas multiresoluci髇 para robots aut髇omos  

Microsoft Academic Search

This paper presents a hierarchical path-planning algorithm based on 3D foveal structures. The environment is described by means of probabilistic maps presenting a high degree of decomposition. The novelty of this approach consists of using different resolutions in different areas of the map according to their interest, plus a pyramidal structure to compact free obstacles and obstacles into little nodes

C. Urdiales; A. Bandera; F. Sandoval

225

AVALIA敲O SOBRE O CASO DE FEOCROMOCITOMA EM BOVINOS  

Microsoft Academic Search

Two cases of adrenal medular tumor in bovine are described on state of Par. In case 1, yellow-brownish neoplasia of 6.04.5cm size was observed. Case 2, was constituted of a malignant neoplasia with the primary lesion measuring 33.018.0cm and weighing 6.5kg. Metastases were found in the lungs and in the

Gabriel Paiva; Leandro Jos Mondi; Eliane Aparecida de Toledo

226

Estudios sobre Educacion, 2002 (Studies on Education, 2002).  

ERIC Educational Resources Information Center

This journal, which provides abstracts of its articles mostly in Spanish and a few in English, contains studies (estudios) and notes (notas) about educational issues, as well as relevant book reviews (recensiones). Studies in this issue (No. 3, 2002) are: "Unprotected Time of Early Adolescence and Intergenerational Relations: A New Educational

Estudios sobre Educacion, 2002

2002-01-01

227

Modelo anal韙ico del efecto de PRS sobre sat閘ites GPS  

NASA Astrophysics Data System (ADS)

El sistema GPS (Global Position System) es, hoy en d韆, la herramienta de navegaci髇 y posicionamiento m醩 potente y lo ser sin duda en la pr髕ima d閏ada. Gran parte de su valiosa utilidad se debe a la alta precisi髇 que permite lograr y 閟ta, a su vez, depende, entre otras causas, de la precisi髇 con que se conocen las 髍bitas de los sat閘ites. La presi髇 de radiaci髇 solar (PRS) fija el l韒ite de la precisi髇 con que pueden calcularse en la actualidad las efem閞ides satelitarias. El objetivo de este trabajo es proponer una mejor resoluci髇 de este fen髆eno. El modelo anal韙ico aqu presentado, se basa en el an醠isis del comportamiento de los residuos de un ajuste por m韓imos cuadrados en el que se utiliza el modelo de PRS propuesto por Beutler. El mismo consiste en un modelo determinista del fen髆eno con dos par醡etros libres. Los resultados obtenidos ponen de manifiesto que, a鷑 despu閟 de aplicar dichos par醡etros, prevalecen en los residuos efectos semidiurnos en las componentes radial,tangencial y normal. Estos resultados obtenidos se comparan con los de un trabajo desarrollado por el Instituto de Berne (Beutler et al., 1994), en el que se utilizaron como pseudo-observaciones las 髍bitas precisas del IGS (CODE). El intervalo de integraci髇 escogido por este centro fueron las semanas 680 y 681. En resumen se tienen arcos de 14 d韆s para todos los sat閘ites, donde las efem閞ides precisas de los mismos para los 14 d韆s fueron utilizados como pseudo-observaciones. El modelo de fuerza que emple dicho centro fue b醩icamente el tradicional en lo que respecta al modelo de las fuerzas gravitacionales, y para la PRS utilizo el modelo standard de Beutler. Los par醡etros de este modelo junto con las 6 condiciones iniciales (posici髇 y velocidad) fueron ajustados por el m閠odo general de m韓imos cuadrados. Los residuos en la componente radial, tangencial y normal, para los sat閘ites con un buen comportamiento, presentan una componente semidiurna. El modelo anal韙ico planteado en este trabajo, predice el comportamiento de los residuos que se observan en las publicaciones m醩 recientes. Esto abre el camino para plantear una estimaci髇 distinta de las inc骻nitas del problema, basado en el m閠odo de colocaci髇 por m韓imos cuadrados. Ello requiere modelar estad韘ticamente la se馻l debida a las componentes de la PRS que no son tomadas en cuenta en el modelo determinista.

Meza, A.; Brunini, C.; Usandivaras, J. C.

228

ORIENTACI覰 SOBRE LA AGRICULTURA URBANA: UNA V虯 PARA LA SOSTENIBILIDAD  

Microsoft Academic Search

El presente trabajo es de gran importancia por los efectos de la crisis econ髆ica mundial que ha tra韉o como consecuencia que los pa韘es enfrentan una situaci髇 de emergencia alimentaria y necesitan ayuda exterior, nos proponemos brindar una orientaci髇 acerca de en qu consiste el proyecto de la Agricultura Urbana en nuestro pa韘 como opci髇 muy provechosa en las actuales circunstancias

Yamila Santana Esponda; Ramiro Renol Ortega Vera

2009-01-01

229

CONSIDERACIONES SOBRE LA DIMENSI覰 蒚ICA EN CIENCIA Y TECNOLOG虯  

Microsoft Academic Search

La tecnolog韆 se ha convertido en un factor de poder en las relaciones internacionales, ambas son procesos sociales, encaminados al propio desarrollo de la humanidad. La ciencia debe estar al servicio del conocimiento y la raz髇 para contribuir a la emancipaci髇 del ser humano, lejos de la influencia del poder, debe detenerse ante el juicio moral sin pretender juzgarla ni

Gloria Arleny Su醨ez Rodr韌uez; Maite Tovar Horta

2012-01-01

230

Conversaciones sobre vida y teatro con Susana Torres Molina  

E-print Network

lectura y la escritura? Desde que tengo recuerdos, me veo leyendo much韘imo. De chica le韆 tanto la literatura que le韆 mi hermana, ocho a駉s mayor, como los libros de Emilio Salgari. Me gustaba mucho Agatha Christie, Chesterton, Poe, la novela...

André , Marí a Claudia

2002-04-01

231

INFLUENCIA DE LAS MICORRIZAS SOBRE LAS POBLACIONES BACTERIANAS Y SU EFECTO SOBRE LOS RENDIMIENTOS EN SECUENCIAS DE CULTIVOS  

Microsoft Academic Search

A group of studies was carried out on a compacted Red Ferralitic soil, with the aim of evaluating the influence of inoculation frequency with arbuscular mycorrhizal fungi (AMF) on rizobacteria population and its effect on yield of diverse crop sequences. Therefore, four field experiments were developed in a randomized block design repeated during two years; three different crops were alternated,

M. Riera; N. Medina

232

Sobre as inclina珲es carnais: inflex鮡s do pensamento crist鉶 sobre os desejos e as sensa珲es prazerosas do baixo corporali  

PubMed Central

On carnal inclinations: from early Christianity to the present This study develops a historical review of the meanings of the 揻lesh in the West, focusing on its significance in the context of Christianity. Our hope is that a study along these lines can help to illuminate current understandings of questions related to sexuality both within and outside of the religious contexts found in contemporary Brazil. Such questions are of special interest for those who are concerned with both old and new problems found in the field that has come to be known as sexual and reproductive rights, with implications for the field of Public Health. PMID:21980215

RIOS, LU蚐 FELIPE; PARKER, RICHARD; TERTO, VERIANO

2011-01-01

233

Cuestionario avanzado sobre Open Access y repositorios institucionales [Isidro Aguillo, Instituto de Estudios Documentales sobre Ciencia y Tecnologa  

E-print Network

repositorio institucional Digital.CSIC es una buena noticia para la comunidad cient韋ica del Consejo? 縋or qu parecer韆 razonable tener en cuenta la participaci髇 de los investigadores en su repositorio institucional su producci髇 cient韋ica? 緾ree que el repositorio institucional podr韆 aumentar el inter閟 de la

234

Controlando el Deslave de la Irrigacion de Aspersi髇, la Erosi髇, y la Perdida del F髎foro con Paja y Poliacrilamido  

Microsoft Academic Search

RESUMEN. Controlar la erosi髇 por deslave y erosi髇 es importante para mantener la productividad del suelo y reducir el destrucci髇 fuera del sitio debido al enriquecimiento de sedimentos y nutrientes. Comparamos los efectos combinados del residuo superficial de PAM en el deslave, perdidas de suelo de suelo irrigado con aspersores en el laboratorio. Hipotizamos que el residuo superficial pudiese mejorar

D. L. Bjorneberg; J. K. Aase; D. T. Westermann

2000-01-01

235

Impact of soil compaction upon soil water balance and maize yield estimated by the SIMWASER model  

Microsoft Academic Search

The capability of the soil water balance model SIMWASER to predict the impact of soil compaction upon the yield of maize (Zea mays L.) is tested, using the results of a field experiment on the influence of soil compaction by wheel pressure upon soil structure, water regime and plant growth. The experimental site was located on an Eutric Cambisol with

E Stenitzer; E Murer

2003-01-01

236

Influence of modern soil restoration techniques on litter decomposition in forest soils  

Microsoft Academic Search

The study assesses the influence of various soil preparation techniques for afforestation on litter decomposition in replanted forest soils. Techniques were compared in three different study areas in the western part of Germany on gleyic, dystric cambisol and gleyic luvisol soil types. The mechanical soil preparation techniques compared was part of a comprehensive restoration of acidic and partially compacted forest

Christoph Emmerling; Gerhard Eisenbeis

1998-01-01

237

Patchiness and Spatial Distribution of Laccase Genes of Ectomycorrhizal, Saprotrophic, and Unknown Basidiomycetes  

E-print Network

, Saprotrophic, and Unknown Basidiomycetes in the Upper Horizons of a Mixed Forest Cambisol Patricia Luis1- tributed to ectomycorrhizal, unknown and saprotrophic basidiomycetes, respectively. Most dominant sequences various functional groups of fungi (saprotrophs, symbionts, and pathogens) but not within all species (e

Bruns, Tom

238

Grain yield and protein concentration of two amaranth species ( Amaranthus spp.) as influenced by the nitrogen fertilization  

Microsoft Academic Search

Amaranth, an alternative cereal, is attracting researchers attention mainly because of the high nutritional value of its seed, which can be influenced by nitrogen fertilization. The goal of the research carried out on eutric cambisol in Zagreb in the period 20022004 was to determine the influence of nitrogen fertilization upon seed yield, seed protein concentration, 1000-seed weight, dry matter content

Ana Pospi歩l; M. Pospi歩l; B. Varga; Z. Sve?njak

2006-01-01

239

Effect of the Entrapped air on Water Flow in Heterogeneous Soil: Experimental Set up  

Microsoft Academic Search

Temporal variations of steady state water flow rates were observed in laboratory infiltration experiments done on a sample of compacted sand and on an undisturbed soil sample (Eutric Cambisol). These variations are found to be in relation with entrapped air content. Infiltration-outflow experiments consisted of a series of ponded infiltration runs with seepage face boundary condition at the lower end

M. Snehota; M. Sobotkova; M. Cislerova

2008-01-01

240

Producci髇 de semilla de guinea (Panicum maximum Jacq.) en un sistema intensivo de ceba de ganado vacuno Seed production of Guinea grass (Panicum maximum Jacq.) in an intensive cattle fattening system  

Microsoft Academic Search

On a sialitic Brown soil of the calcic Cambisol subtype, located at the 獵alixto Garc韆 Livestock Production Enterprise, in the Holgu韓 province, the production of Guinea grass (Panicum maximum Jacq.) was studied in an intensive cattle fattening system, with irrigation. The treatments were five varieties of Guinea grass: A) Common; B) Likoni; C) Mombasa; D) Tanzania; and E) Tobiat. The

G. Oquendo; A. P閞ez; A. Mart韓ez; F. Ortega; E. Vieito; A. Rodr韌uez; M. Acosta; N. Rodr韌uez

241

Impact of oil contamination and biostimulation on the diversity of indigenous bacterial communities in soil microcosms  

Microsoft Academic Search

The aim of this study was to analyse the effect of oil contamination and biostimulation (soil pH raise, and nitrogen, phosphate and sulphur addition) on the diversity of a bacterial community of an acidic Cambisol under Atlantic Forest. The experiment was based on the enumeration of bacterial populations and hydrocarbon degraders in microcosms through the use of conventional plating techniques

Flavia F. Evans; Alexandre S. Rosado; Gina V Sebasti醤; Renata Casella; Pedro L. O. A. Machado; Carola Holmstr鰉; Staffan Kjelleberg; Jan D van Elsas; Lucy Seldin

2004-01-01

242

Spatial Variability of Soil Organic Carbon Under Maize Monoculture in the Song-Nen Plain, Northeast China  

Microsoft Academic Search

Soil organic carbon (SOC) and its relationship with landscape attributes are important for evaluating current regional, continental, and global carbon stores. Data of SOC in surface soils (020 cm) of four main soils, Cambisol, Arenosol, Phaeozem, and Chernozem, were collected at 451 locations in Nongan County under maize monoculture in the Song-Nen Plain, Northeast China. The spatial characteristics of soil

Zong-Ming WANG; Bai ZHANG; Kai-Shan SONG; Dian-Wei LIU; Chun-Ying REN

2010-01-01

243

Influence of cultivation and fertilization on total organic carbon and carbon fractions in soils from the Loess Plateau of China  

Microsoft Academic Search

To evaluate the degradation of soil quality and find ways to maintain soil fertility on the Loess Plateau of China, the effects of cultivation time on total organic carbon (TOC), light fraction of organic carbon (LFOC), and microbial biomass carbon (MB-C) in two soil chronosequences comprised of Huangmian (Calcaric Cambisols, FAO) and Huihe (Haplic Greyxems, FAO) soils were investigated. The

Tianyun Wu; Jeff J Schoenau; Fengmin Li; Peiyuan Qian; Sukhdev S Malhi; Yuanchun Shi; Fuli Xu

2004-01-01

244

The impact of termites and mulch on the water balance of crusted Sahelian soil  

Microsoft Academic Search

The effects of termite activity and four mulch types on the water balance of crusted soil were studied on two soils (a lixisol and a cambisol) in northern Burkina Faso. A split plot design with three replications was used, with termite and non-termite as main factor and mulch treatments as second factor with three variables consisting of Pennisetum pedicellatum mulch

A. Mando

1997-01-01

245

MEZCLAS DE TR葿OL SUBTERR罭EO CON OTRAS LEGUMINOSAS ANUALES PARA SUELOS GRAN蚑ICOS DEL SECANO MEDITERR罭EO SUBH贛EDO DE CHILE Subterranean clover mixtures with other annual legumes for granitic soils of the subhumid Mediterranean dryland zone of Chile  

Microsoft Academic Search

A B S T R A C T In Cauquenes (3558' S lat., 7217' W long.), VII Region, Chile, in a granitic soil, the productivity and persistence of six mixtures with different percentages of annual legumes were evaluated: M1 Trifolium subterraneum (Ts); M2: Ts and Medicago polymorpha (Mp); M3: Ts, Mp and Trifolium michelianum (Tb); M4: Ts, Mp, Tb and

Carlos Ovalle; Claudio Porqueddu

2005-01-01

246

LA RELACI覰 ENTRE LA DENSIDAD APARENTE Y LA RESISTENCIA MEC罭ICA COMO INDICADORES DE LA COMPACTACI覰 DEL SUELO RELATIONSHIP BETWEEN BULK DENSITY AND MECHANICAL RESISTANCE AS AN INDICATOR OF SOIL COMPACTION  

Microsoft Academic Search

In scientific literature contrasting results have been reported concerning the relationship between bulk density (? ?? ??a) and soil penetration resistance (cone index = CI). The objective of this study was to demonstrate that there is a significant correlation between ? ? ? ? ?a and CI if sampling is conducted with moisture content at field capacity and sampling depth

Rafael Blanco-Sep鷏veda

247

Cambios estructurales y mec醤icos en suelos volc醤icos de diferentes usos Structural and mechanical changes in volcanic soils with different management Changements structuraux et m閏aniques dans des sols volcaniques soumis diff閞ents modes d'utilisation  

Microsoft Academic Search

SUMMARY Volumetric changes of soil components of undisturbed samples, bearing capacity, internal cohesion, penetration resistance, stress distribution was determined in a Hapludand soils in Southern Chile with different kinds of management. A settling was detected immediately after elimination of native forest, a further use of soil the volume was not affected significantly. In addition to these changes in pore space

ELLIES Achim

248

IRRIGATION SCHEDULING OF PEACH TREES (Prunus persica L.) BY CONTINUOUS MEASUREMENT OF SOIL WATER STATUS PROGRAMACI覰 DEL RIEGO EN MELOCOTONEROS (Prunus persica L.) MEDIANTE MEDICI覰 CONTINUA DEL STATUS H虳RICO DEL SUELO  

Microsoft Academic Search

Continuous real time soil moisture measurements facilitate the control of soil water availability for plants. The aim of this research was to study soil water content in two irrigation treatments and its effect on the physiological response of young peach trees (Prunus persica (L.) Batsch cv. Flordastar) during one growing season. The irrigation treatments were: T-1, scheduled to fulfil crop

Oussama H. Mounzer; Juan Vera; Luis M. Tapia; Yelitza Garc韆-Orellana; Wenceslao Conejero; Isabel Abrisqueta; Carmen Ruiz-S醤chez; Jos Ma. Abrisqueta-Garc韆; Biolog韆 Aplicada del Segura

2008-01-01

249

CONCENTRACI覰 E INTERRELACI覰 MINERAL EN SUELO, FORRAJE Y SUERO DE OVINOS DURANTE DOS 蒔OCAS EN EL VALLE DE TOLUCA, M蒟ICO MINERAL CONCENTRATION AND INTERRELATIONSHIP IN SOIL, FORAGE AND BLOOD SERUM OF SHEEP DURING TWO SEASONS IN THE TOLUCA VALLEY, M蒟ICO  

Microsoft Academic Search

To identify mineral imbalances and their interrelationships, a sampling was made of soil, forage, water and blood of lambs and ewes, in June and October 1991, in six sheep production units (PU) of the valley of Toluca, M閤ico. The mineral content in the soil and forage was affected (p?0.05) by the PU, time period and their interaction. The soils were

Ignacio A. Dom韓guez-Var; Maximino Huerta-Bravo; Esta Toluca

250

Estudios de la Zona No Saturada del Suelo Vol. VIII. J.V. Girldez Cervera y F.J. Jimnez Hornero, 2007 UNA FUNCIN DE RETENCIN QUE INCLUYE LA REGIN DE SEQUEDAD EXTREMA EN  

E-print Network

ISOTERMA DE ADSORCI覰 DE BET O. Silva , J. Grifoll Grup de Recerca de Fen騧ens de Transport, Departament d.silva@urv.cat y jordi.grifoll@urv.cat Direcci髇 actual: Instituto Jaume Almera de Ciencias de la Tierra, Consejo

Polit鑓nica de Catalunya, Universitat

251

CORRELACI覰 Y CALIBRACI覰 DEL AN罫ISIS DE F覵FORO EN SUELOS DE YUCAT罭, M蒟ICO, PARA EL CULTIVO DE CHILE HABANERO CORRELATION AND CALIBRATION OF PHOSPHORUS ANALYSIS IN SOILS FROM YUCAT罭, M蒟ICO, FOR GROWING HABANERO PEPPERS  

Microsoft Academic Search

Soil analysis for predicting the level of phosphorus (P) availability is unique for each crop and condition in which it is developed; therefore, it should be based on the relationship between the P extracted by the plant and the soil analysis made with an appropriate technique. The objective of the present study was to compare the chemical analysis methods of

Lizette Borges-G髆ez; Manuel Soria-Fregoso; V韈tor Casanova-Villarreal; Eduardo Villanueva-Cohuo; Gaspar Pereyda-P閞ez

252

What has happened in about the last 20 years in the Canyoles watershed?  

NASA Astrophysics Data System (ADS)

Along history, the Mediterranean arid lands have undergone widespread land use transformation, especially in recent decades (Piqueras, 2012). There are changes driven by socio-economic conditions, such as European Agricultural Policies (MacDonald et al., 2000; Keenleyside and Tucker, 2010; Renwick et al., 2013), which have caused land degradation processes (soil erosion, soil sealing, water pollution, salinization, wildfires, land abandonment, urban sprawl and intensive agricultural practices). Land degradation is the results of a complex Socio Ecological System (SES) which should be addressed using the Geographical Information System (GIS) to identify and assess the spatial variation of land use change. Therefore, the aim of this work has been to describe and assess the land use change by human activities in a typical Mediterranean watershed (C鄋yoles Valley) located at South-East of Iberian Peninsula as a part of the Land Ecosystem and Degradation Desertification Response Assessment (LEDDRA) project, which has undergone a quick land use change in last two decades (1986 - 2005). Results reveal that the surface area devoted to rainfed crops (e.g., olive crops (47 %) and vineyards (28 %) and forestry have decline significantly; while the citrus orchards (irrigated crops) and unproductive areas (e.g., roads and railways, urban areas) have been increasing its surface in just about last 20 years in 45 % and 67 %, respectively. According to the literature review (Cerd, 1994; Cerd et al., 1999, 2007; Cerd, 2007; Bod et al., 2012; Gonz醠ez-Pe馻loza, 2012) these recent changes, in the study site, have caused many environmental disturbances mainly due to the lack control strategies plans of land degradation. Acknowledgements This research is being conducted by the EU project "Land Ecosystem and Degradation Desertification: Assessing the Fit of Responses" LEDDRA 243857 CONSORTIUM AGREEMENT. TR07 - VII PROGRAMA MARCO - ENERG虯 FP7-ENERGY-2007-2-TREN. - European Union FP7. ENV.2009 243857. Keywords: GIS, land use, degradation, C鄋yoles valley, agricultural practices. References Bod, M.B., Cerd, A., Mataix-Solera, J., Doerr, S.H. 2012. Efectos de los incendios forestales en la vegetaci髇 y el suelo en la cuenca mediterr醤ea: revisi髇 bibliogr醘ica. Bolet韓 de la Asociaci髇 de Ge骻rafos Espa駉les 58, 33-35 Cerd, A, Gim閚ez - Morera, A. Terol, E., Dom韓guez, A. Jurgensen, M.F., Doerr, S.H. 1999. Cultivos de c韙ricos y erosi髇 de suelos en el este de la Pen韓sula Ib閞ica. En Control de la Degradaci髇 de los suelos y cambio global (Eds: S醤chez D韆z, J., Asins Velis, S.). IV Simposio sobre control de la degradaci髇 de los suelos y cambio global. Universitat de Val鑞cia. Valencia. 71 - 72. Cerd, A. 1994. Arroyada superficial en terrazas de cultivo abandonadas. El caso del Pa韘 Valenciano. Cuadernos de Geograf韆 56, 135-154 Cerd, A. 2007. Soil water erosion on road embankments in Eastern Spain. Science of the Total Environments 378, 151-155. Gonz醠ez-Pe馻loza, F.A., Cerd, Zavala, L.M., Jord醤, A. 2012. Do conservative agriculture practices increase soil water repellency? A case study in citrus-cropped soils. Soil & Tillage Research 124, 233 - 239. Keenleyside, C., Tucker, G.M. 2010. Farmland Abandonment in the EU: An assessment of Trend and Prospects. Report Prepared for WWF. Institute for European Environmental Policy, London. 93 pp. MacDonald, D., Crabtree, J.R., Wiesinger, G., Dax, T., Stamou, N., Fleury, P., Guti閞rez-Lazpita, J., Gibon, A. 2000. Agricultural abandonment in mountain areas of Europe: Environmental consequenses and policy reponse. Journal of Environmental Management 59, 47-69. Piqueras, J. 2012. Geograf韆 del Territorio Valenciano. Departament de Geografia, Universitat de Val鑞cia (Valencia, Espa馻). 256 pp. Renwick, A., Jansson, T., Verburg, P.H., Revoredo-Giha, C., Britz, W., Gocht, A., McCracken, D. 2013. Policy reforms and agricultural land abandonment in the EU. Land Use Policy 30, 446-457.

羘gel Gonz醠ez Pe馻loza, F閘ix; Cerd, Artemi; D韆z del Olmo, Fernando

2013-04-01

253

On-Site Wastewater Treatment Systems: Alternative Collection Systems (Spanish)  

E-print Network

poblaciones m?s densas o cuyos suelos est?n en malas condiciones; y sistemas individuales donde las condiciones de los suelos son favorables. Aunque estos sistemas alterna- tivos en suelo son opciones viables para el manejo de aguas negras, muchas regiones...?n y mantenimiento ** AGDP: alcantarillado por gravedad de di?metro peque?o Aunque, el costo del manejo de aguas negras var?a enormemente de sistema a sistema, los sistemas en suelo por lo general cuestan menos que los que descargan en los arroyos...

Lesikar, Bruce J.; Enciso, Juan

2002-04-22

254

An醠ise sobre o Conhecimento de um Grupo de Alunos do Ensino M閐io da Rede Estadual de S鉶 Paulo sobre Termos e Fen鬽enos Astron鬽icos do Cotidiano  

NASA Astrophysics Data System (ADS)

Embora os Par鈓etros Curriculares Nacionais do Ensino M閐io (PCN-EM) e as orienta珲es complementares a esses Par鈓etros (PCN+) apontem a import鈔cia de uma abordagem significativa de conceitos relacionados astronomia nas aulas de F韘ica, muitos estudantes terminam o Ensino M閐io (EM) sem compreender a raz鉶 de certos acontecimentos de origem celeste, ainda que estes fa鏰m parte de seu cotidiano. Este trabalho tem por objetivo analisar os conhecimentos b醩icos em astronomia dos alunos de EM da escola estadual Batista Renzi, bem como investigar os meios atrav閟 dos quais estes conhecimentos foram adquiridos. Para tanto foi elaborado um question醨io de m鷏tipla escolha aplicado a 310 alunos distribu韉os entre as tr阺 s閞ies do EM dos per韔dos matutino e noturno. Dessa forma, observou-se que apenas 34,5% relacionaram as esta珲es do ano inclina玢o do eixo de rota玢o da Terra, 21,3% indicaram a influ阯cia gravitacional da Lua e do Sol como respons醰eis pelo fen鬽eno das mar閟, 24,5% indicaram corretamente quais s鉶 os objetos celestes mais pr髕imos da Terra, 36,1% identificaram ano-luz como uma medida de dist鈔cia e 34,2% reconheceram uma estrela cadente como meteoro. Em contrapartida, 67,1% compreendiam a sucess鉶 entre dia e noite, 73,9% identificaram o Sol como estrela e 52,3% relacionaram o Big Bang origem do Universo. Al閙 disso, foram comparadas as respostas de alunos de diferentes s閞ies e per韔dos, observando-se, dentre outras coisas, que os estudantes do terceiro ano apresentam um percentual de acertos semelhante ao dos alunos do primeiro, caracterizando que a abordagem de t髉icos relacionados astronomia no EM n鉶 tem contribu韉o para uma maior compreens鉶 dos fen鬽enos e conceitos.

de Oliveira, E. F.; Voelzke, M. R.; Amaral, L. H.

2007-08-01

255

REAL-TIME WORKSHOP EN LA INVESTIGACI覰 : IMPLEMENTACI覰 DE DIVERSOS CONTROLADORES SOBRE UN SISTEMA SISO NO LINEAL Y SOBRE UN ROBOT M覸IL CON VISI覰 ARTIFICIAL  

Microsoft Academic Search

Resumen En este art韈ulo se muestra el trabajo que se est realizando en nuestra universidad en relaci髇 a Real-Time Workshop. Con el objetivo de disponer de un entorno que permita completar el proceso de an醠isis, dise駉 y implementaci髇, se han desarrollado drivers espec韋icos para tarjetas de adquisici髇 de datos as como para permitir el acceso al puerto de comunicaci髇 serie

A. Oller; C. Pous; S. Esteva; J. Ll

256

Content and persistence of extracellular DNA in native soils  

NASA Astrophysics Data System (ADS)

The long-term persistence of soil extracellular DNA is questionable because of high potential activity of nucleases produced by soil microorganisms. By the other hand, the relative persistence of DNA-like biopolymers could be due to their adsorption on clay minerals and humus substances in soil. High-specific and ultra sensitive reagent PicoGreenTM (Molecular Probes) permits the quantitative assessment of microbial dsDNA in diluted soil extracts giving a good tool for tracing the DNA fate in soil. Our goal was to determine intracellular and extracellular DNA content in cambisol (loamy sand) and in chernozem (silty loam) soils and to investigate the possible adsorption and degradation of extracellular DNA in soil. Optimized procedure of mechanical and enzymatic destruction of cell walls was used for direct extraction of microbial DNA with Tris-EDTA buffer (Blagodatskaya et al., 2003). Extracellular dsDNA was determined in distilled water and in Tris-EDTA extracts without enzymatic or mechanical treatments. DNA content was determined after addition of PicoGreen to diluted soil extracts. Degradation of extracellular DNA was traced during 24 h incubation of 2 礸 lambda-phage DNA in soil. Possible DNA adsorption to soil matrix was determined by recovery of lambda -phage DNA added to autoclaved soil. Extracellular dsDNA was absent in water extracts of both soils. The content of extracellular dsDNA extracted by Tris-EDTA buffer was 0.46 礸/g in chernozem and 1.59 礸/g in cambisol amounting 0.43 and 2.8% of total dsDNA content in these soils, respectively. 100% and 64.8% of added extracellular lambda -phage dsDNA was found in cambisol and chernozem soils, respectively, in 5 h after application. 39% and 73.5% of added DNA disappeared in cambisol and in chernozem, respectively, during 24 h incubation. Degradation rate of extracellular DNA depended on microbial biomass content, which was 2.5 times higher in chernozem as compared to cambisol. Maximum adsorption of DNA by soils was observed in cambisol and reached 2.7% of added amount. We speculate that probability of gene transfer could be rather high in soils, taking into account possible increase of extracellular DNA content after transient environmental events (i.e. drying - rewetting and freezing - thawing).

Blagodatskaya, Evgenia; Blagodatsky, Sergey; Anderson, Traute-Heidi; Kuzyakov, Yakov

2014-05-01

257

Rad髇  

Cancer.gov

El rad髇 es un gas radiactivo que se libera por la desintegraci髇 normal de los elementos qu韒icos uranio, torio y radio en las rocas y el suelo. Es un gas invisible e inodoro que se filtra a trav閟 del suelo y se difunde en el aire.

258

EL ROL DE LA FILIAL PEDAG覩ICA MUNICIPAL SAN LUIS EN LA POTENCIACI覰 DE LA DIMENSI覰 AMBIENTAL  

Microsoft Academic Search

En Cuba existe una estrategia ambiental dirigida a disminuir el efecto de degradaci髇 de los suelos y el cambio clim醫ico, implementar de forma generalizada la agricultura sostenible, eliminar las manifestaciones de vertimiento inadecuado de residuos l韖uidos y s髄idos sin un accionar cient韋ico que permita su re-uso y tratamiento, controlar la contaminaci髇 ambiental, la desertificaci髇 de los suelos, la deforestaci髇, la

Armando Paz Aguilera; Tania Lestapier Reyes; D醙maris Fern醤dez Barb醤; Yaritza Milagros La O Soria; Rogelio Garc韆 Tejera; Rafael Leyva Gal醤

2010-01-01

259

POTENCIAL INSETICIDA DO EXTRATO DE Piper tuberculatum (PIPERACEAE) SOBRE Alabama argillacea (HUEBNER, 1818) (LEPIDOPTERA: NOCTUIDAE)1  

Microsoft Academic Search

Plants from Piperaceae family are known to contain in their composition substances with insecticidal properties. Identification and isolation of compounds from these plants represent an alternative to conventional chemical insecticides, representing a promosing alternative to the incorporation of nex substances to the pest management, with important ecological advantages, like low environmental and human impact. The present study was developed to

JOS EDNILSON MIRANDA; JOS EUDES DE MORAIS; KELLY CRISTINA G. ROCHA; HOSANA M. D. NAVICKIENE; J. KATO; MAYSA FURLAN

260

An醠isis de respuestas abiertas en un cuestionario sobre conductas relacionadas con el SIDA  

Microsoft Academic Search

Abstract The aim of this work is, first, to analyse and to describe the answers of 402 students of the University of Huelva in an open-ended question through textual analyses and, second, to know whether these answers

MANUEL S罭CHEZ; ALICIA MU袿Z

2001-01-01

261

Influencia familiar sobre la conducta alimentaria y su relaci髇 con la obesidad infantil  

Microsoft Academic Search

RESUMEN. La conducta alimentaria es el conjunto de acciones que establecen la relaci髇 del ser humano con los alimentos. Se acepta generalmente que los comportamientos frente a la alimentaci髇 se adquieren a trav閟 de la experiencia directa con la comida, por la imitaci髇 de modelos, la disponibilidad de alimentos, el estatus social, los simbolismos afectivos y las tradiciones culturales. Adem醩

Santos JL

262

Homework Tips for Parents = Consejos para los padres sobre la tarea escola.  

ERIC Educational Resources Information Center

Homework has been a part of students' lives since the beginning of formal school in the United States; the push for increased homework has increased, fueled by rising academic standards. Noting that parents involved can have either a positive or a negative influence on the value of homework, this booklet, in both English and Spanish, offers

Department of Education, Washington, DC. Office of Intergovernmental and Interagency Affairs.

263

Los campos de concentraci髇 en Europa. Algunas consideraciones sobre su definici髇, tipolog韆 y estudios comparados  

Microsoft Academic Search

El art韈ulo presenta el problema de los campos de concentraci髇 en Europa durante la Segunda Guerra Mundial y la posguerra. Aborda el origen y funcionamiento de los campos nazis y sovi閠icos, y presenta la perspectiva comparada de los campos de los pa韘es totalitarios con los campos de prisioneros de guerra y de internamiento, tambi閚 denominados 玠e concentraci髇. Para este fin

Jan Stanis?aw Ciechanowski

2005-01-01

264

CONSERVA敲O DO CAMPO NATURALIZADO: A IMPORT翹CIA DO MANEJO E DA SOBRE-SEMEADURA  

Microsoft Academic Search

Resumo As pastagens naturais representam um valor incalcul醰el em termos de recursos naturais, devido a sua relev鈔cia s骳io-econ鬽ica, ao seu imenso patrim鬾io gen閠ico, al閙 de desempenhar importante papel na conserva玢o do solo atrav閟 cobertura vegetal. Todavia, t阭 sido consideradas de pouca qualidade sendo utilizados para alimenta玢o de animais de baixo requerimento. Por outro lado, quando submetidas ao \\

Ricardo Miotto TURNES; Abdon Luiz; SCHMITT Filho; Hermes BENEDET; Jorge Homero DUFLOTH

265

MEMORIA Y REALIDAD: UNA INVESTIGACI覰 CUALITATIVA SOBRE EL RECUERDO DE LA FICCI覰 TELEVISIVA  

Microsoft Academic Search

This article presents the results of a qualitative research (38 focus groups) about the memories of the serial Dallas among the Spanish audiences of today. It questions the classical approach about \\

Juan Menor Sendra; Carlos Camino del Molino

266

Una investigaci髇 cualitativa y etnogr醘ica sobre el valor educativo y el uso did醕tico del patrimonio cultural  

Microsoft Academic Search

Se han hecho valiosas aportaciones acerca del estudio del patrimonio cultural desde la perspectiva de las diversas ciencias sociales y de la did醕tica, pero dichas aportaciones parece que han encontrado escaso eco en la ense馻nza-aprendizaje de las ciencias sociales. Para acercarnos al conocimiento de lo que realmente se entiende por patrimonio cultural y su tratamiento en la ense馻nza, a nivel

Neus Gonz醠ez Monfort

2008-01-01

267

Variacin Termal sobre la Superficie Ocenica del Caribe Samuel Pacheco-Cherena  

E-print Network

censor AVHRR (Advance Very High Resolution Radiometer) a bordo del sat茅lite NOAA-18, cuya campana fue y AVHRR-3, que es el que utiliza en estos momentos el NOAA-18. (Figura 3). Figura 2. Especificaciones adicionales del censor AVHRR. El NOAA-18 es parte de una nueva serie de sat茅lit

Gilbes, Fernando

268

Tpicos sobre programao de computadores como mtodo educativo no jardim-de-infncia  

E-print Network

apoiam-se fortemente na teoria construtivista de Jean Piaget (o que n鉶 de espantar, j que Papert trabalhou com Piaget na Su礴a), pese as necess醨ias diferen鏰s que apresentam. Contudo, o aspecto essencial

Paris-Sud XI, Universit de

269

Simposio interamericano sobre administracion de la educacion (Inter-American Symposium on Educational Administration).  

ERIC Educational Resources Information Center

The presidents and foreign ministers in Latin America recognize the importance of applying technology to school administration as the first step in any educational reform. In October 1968, the Organization of American States (OAS) [Organizacion de los Estados Americanos (OEA)], sponsored a symposium in Brasilia, Brazil, in cooperation with the

Cespedes, Francisco S., Ed.

270

Recursos de Trabajo: Informacion sobre Carreras (Occupational Resources: Career Information). CHOICE (Challenging Options in Career Education).  

ERIC Educational Resources Information Center

Part of a two-level career education curriculum initially developed for migrant children, the book is the first of three secondary level texts designed to provide high school students with self-awareness, job and role information, and decision-making/goal attaining information related to career education. The text provides job and role information

Putnam and Northern Westchester Counties Board of Cooperative Educational Services, Yorktown Heights, NY.

271

Documento de consenso sobre la utilizaci髇 de profilaxis antibi髏ica en cirug韆 y procedimientos dentales  

Microsoft Academic Search

The goal of antibiotic prophylaxis in Odontology is to prevent the onset of infections through the entranceway provided by the therapeutic action, therefore it is indicated providing there is a considerable risk of infection, either because of the charac- teristics of the operation itself or the patient's local or general condition. Nonetheless, clinical trials with antibiotics in dental pathologies have

Jos Luis Guti閞rez; J. Vicente Bag醤; Antonio Bascones; Rafael Llamas; Jaime Llena; Araceli Morales; Blas Noguerol; Paloma Planells; Jos Prieto; Jose Ignacio Salmer髇

2006-01-01

272

Las Preguntas Que Hacen los Padres sobre la Escuela (Questions Parents Ask about School).  

ERIC Educational Resources Information Center

This guide presents questions that parents frequently ask about their children's school along with answers to those questions. The questions and answers were prepared based on the results of studies conducted by the Partnership for Family Involvement in Education, the U.S. Department of Education, the GTE Foundation, and by the National Center for

National Opinion Research Center, Chicago, IL.

273

Normas, justi鏰, atribui玢o e poder: uma revis鉶 e agenda de pesquisa sobre filas de espera  

Microsoft Academic Search

Norms, justice, attribution and power: a revision and research agenda about waiting lines. Considering waiting lines as social systems, a short analysis of the nature and types of queues is presented. Four themes of social psychology are used to analyze behavior in waiting lines: (a) social norms and social influence, (b) distributive, procedural and interactional justice, (c) causal attribution, and

Fabio Iglesias; Hartmut G黱ther

2007-01-01

274

Una Metodologia de Analisis de la Interaccion Alumno-Orgendaor en la Investigacion Sobre Informatica Educativa.  

ERIC Educational Resources Information Center

The recording of the interaction between pupil and computer is one of the data sources frequently used in research on the use of computers in teaching. Describes the analysis methodology of these recordings to determine the use of computers in statistics and its adaptation to other research work on the use of computers in education. (Author/MDH)

Estepa, A.; And Others

1992-01-01

275

Cultural Diversity Awareness Inventory = Inventario Sobre el Reconocimiento de Diversas Culturas.  

ERIC Educational Resources Information Center

This booklet features a checklist designed to help persons who are involved in providing direct services to culturally diverse, young special needs children to assess their attitudes, beliefs, and behavior toward these children. The booklet also contains suggestions and lists of print, film, and filmstrip resources for developing a school program

Henry, Gertrude B.

276

IMPACTO DE LA INFORMACI覰 EN EPILEPSIA SOBRE LAS ACTITUDES Y CREENCIAS DE UN GRUPO DE PROFESORES  

Microsoft Academic Search

In 1992 an anonymous and structured survey was taken to a group of teachers in the Cono Sur of Lima, aiming to get to know their attitudes, knowledge and beliefs about epilepsy. We found several wrong ideas and prejudices towards children with epilepsy, due to these findings, an informative program was started which is kept to date. The survey was

Por JULIO ESPINOZA; LUCY MADRID; FIDELA SOTO; MATILDE MONTOYA

277

DISYUNTIVAS EN LAS CONCEPCIONES SOBRE AUTONOM虯 Y BENEFICENCIA QUE AFECTAN LA TERAP蒛TICA DEL INTENTO SUICIDA.  

PubMed

El objetivo del trabajo es conocer las disyuntivas entre los principios de beneficencia y autonom韆, que se presentan en la relaci髇 m閐ico-paciente, durante la terap閡tica del intento de suicidio.La investigaci髇 se realiz en dos hospitales psiqui醫ricos de la Ciudad de M閤ico. La muestra incluy a tres sujetos con intento de suicidio, mayores de 18 a駉s, que eran atendidos en consulta externa a causa de una lesi髇 autoinfligida en el 鷏timo a駉, y a tres psiquiatras que trataban a estos pacientes. La informaci髇 se obtuvo previo consentimiento informado en entrevistas individuales. Se llev a cabo un an醠isis de discurso argumentado para encontrar los significados que los participantes otorgaron a los principios bio閠icos y las posibles disyuntivas entre 閟tos.Las discordancias entre la beneficencia y la autonom韆 estuvieron relacionadas con el beneficio del tratamiento, el respeto por los valores y las creencias de los pacientes, entre otros. Este trabajo presenta consideraciones 閠icas relevantes en el escenario cl韓ico, al ofrecer al psiquiatra un an醠isis bio閠ico que le permita actuar de acuerdo con la beneficencia y respetando la autonom韆 del paciente frente a casos de intento de suicidio y, de esta forma procurar una mejor atenci髇 para ellos. PMID:20830214

Mondrag髇, Liliana; Monroy, Zuraya; Ito, Ma Emily; Medina-Mora, Dra Ma Elena

2010-06-01

278

La UA organiza el encuentro argentino, alemn y espaol sobre Memoria Histrica, identidad y trauma  

E-print Network

Espa帽ola, la Segunda Guerra Mundial y el secuestro de sus padres en las Dictaduras militares sudamericanas con la presencia de personas de diferentes nacionalidades que han vivido la (Post-) Guerra Civil generaciones con el denominador com煤n que constituyen la guerra y/o el terrorismo de estado, as铆 como

Escolano, Francisco

279

Los discursos sobre sexualidad en la obra de Alicia Gaspar de Alba  

E-print Network

, and the incorporation of clothing into an integral vision of the figure of the mestiza. In this section, Gaspar de Alba's unique lesbian gaze is revealed as a result of her interest in multiple positionalities. I follow this analysis with an exploration of her revision...

Vivancos P?erez, Ricardo F

2002-01-01

280

Comercio Electr髇ico y Educaci髇 Superior: Consideraciones sobre el C髆o y el Cu醤do  

Microsoft Academic Search

A new era is arising due to Information Technology dynamism. In such environment new business models are emerging generating new pressures for higher education institutions, which must prepare profession- als, technicians and top-Ievel executives to face this challenge. Results of an exploratory research, con- ducted in different industries of Mexico, are used as reference to address some considerations that could

Victoria E. Erosa

2000-01-01

281

Efecto de la pentoxifilina sobre la evoluci髇 de la nefropat韆 diab閠ica  

Microsoft Academic Search

Background and objectiveDiabetic nephropathy (DN) is the principal cause of end-chronic kidney disease. Metabolic and hemodynamic components are directly involved. However, convincing data have shown that inflammation participates in the diabetic complications. The aim of this study was to investigate whether the inhibition of the inflammation and pro-inflammatory cytokines with pentoxifylline (PXF) attenuate the progression of the DN.

Rafael Leyva-Jim閚ez; Ala韓 R. Rodr韌uez-Orozco; Luz Elena Ortega-Pierres; Jes鷖 Ram韗ez-Enr韖uez; Anel G髆ez-Garc韆; Cleto Alvarez-Aguilar

2009-01-01

282

Debate Te髍ico sobre la Conformaci髇 de Territorios Inteligentes mediante Redes Sociales  

Microsoft Academic Search

Una de las 醨eas de mayor relevancia en las dos 鷏timas d閏adas en el estudio de los activos intangibles ha sido, sin duda, la gesti髇 de las actividades relacionadas con el desarrollo y explotaci髇 del conocimiento organizativo. Pero el aprendizaje organizativo es un proceso complejo, en el que intervienen diversos niveles de an醠isis. En tal sentido, es necesario destacar la

Efr閚 Armando Osorio Ram韗ez; Armando Heredia Gonz醠ez; Alberto M閚dez Torreblanca; Adolfo Aguilar Rico

2006-01-01

283

Narrativa autobiogr醘ica de estudantes de Qu韒ica: reflex鮡s sobre a atividade docente  

Microsoft Academic Search

This work discusses data related to a qualitative study, whose objectives were to analyze and understand the issues related to teachers initial training, on a chemistry course. The proposal was the establishment of an Autobiographical Narrative for each student, that should consider the following issues: school trajectory, with emphasis on experiences that influenced profession choice; influence of graduation in their

Luciana Passos S

284

Valores y actitudes sobre la contaminaci髇 ambiental en M閤ico. Reflexiones en torno al posmaterialismo  

Microsoft Academic Search

This study analyzes the relation be- tween values and attitudes concerning environ- mental pollution in Mexico and the change in values associated with the shift from materialism to post-materialism. The data indicate that the link is most evident among the wealthier sec- tors. Environmental values do, however, exist in less privileged groups, indicating that the environmental imperative is also emerging

V虲TOR MANUEL DURAND PONTE; LETICIA DURAND SMITH

285

Actividad Biol骻ica in vitro de Extractos de Lupinus spp. sobre Hongos Fitopat骻enos  

Microsoft Academic Search

The alkaloid content in seeds of Lupinus exaltatus, Lupinus rotundiflorus, and Lupinus montanus (Fabaceae) were determined. Alkaloid extraction and quantification were made by column chromatography and by a gravimetric method, respectively. The fungicide activity in vitro of extracts rich in alkaloids was also evaluated on Sclerotium rolfsii, Alternaria solani, Rhizoctonia solani and Fusarium oxysporum. The extracts were incorporated in potato-dextrose

Artemiza Bernal-Alcocer; Juan Francisco Zamora-Natera; Gil Virgen-Calleros; Ricardo Nu駉-Romero

2005-01-01

286

緾U罫 ES EL COSTO DE LA CONTAMINACI覰 AMBIENTAL MINERA SOBRE LOS RECURSOS H虳RICOS EN EL PER?  

Microsoft Academic Search

This study estimates the economic cost of mining pollution on water resources for the years 2008 and 2009 based on the conceptual framework of Environmental Efficiency (Pittman, 1981.1983, F鋜e et al., 1989, 1993, 2003; Rao, 2000). This framework understands such costs as the mining companies trade-off between increasing production that is saleable at market prices (desirable-output) and reducing environmental pollution

Pedro Herrera; Oscar Millones

2011-01-01

287

ESTUDIO SOBRE LA INSERCI覰 DE LA GESTI覰 AMBIENTAL EN LAS POL蚑ICAS SECTORIALES CASO COLOMBIA  

Microsoft Academic Search

Este estudio presenta una revisi髇 de la regulaci髇 ambiental en Colombia y de sus resultados, concentr醤dose en el an醠isis del desempe駉 ambiental de la industria manufacturera y del sector energ閠ico. La evaluaci髇 detallada del rol que ha jugado la regulaci髇 ambiental permite las siguientes conclusiones: (1) Colombia enfrenta el reto de hacer la regulaci髇 ambiental m醩 flexible, dando espacio a

Marcela Mel閚dez; Eduardo Uribe

2003-01-01

288

NOTAS SOBRE LA BIOLOG虯 REPRODUCTIVA DEL VENCEJO RABIHORCADO (PANYPTILA CAYENNENSIS) EN ANTIOQUIA  

Microsoft Academic Search

Notes about the nesting biology of the Lesser Swallow-tailed Swift (Panyptila cayennensis) in Antioquia. The Lesser Swallow-tailed Swift is poorly known in Antioquia and Colombia. In this paper I outline basic information about some nests from four localities at north of central Colombian cordillera, including pictures and some descriptive notes on the places and conditions where nests were found. These

Paulo C. Pulgar韓-R

289

El MAL Y LA POSESI覰 DIABOLICA: Un an醠isis cr韙ico sobre los conceptos de contaminaci髇 y tab  

Microsoft Academic Search

EVIL AND DEMONIC POSSESSION: A Critical Analysis of Concepts of Pollution and Taboo El presente art韈ulo estudia las nociones de pureza y peligro en una de las antrop髄ogas m醩 influyentes del siglo XX. En este sentido, con una capacidad anal韙ica sobresaliente, Douglas establece un convincente puente entre el tab, la higiene, el peligro y la contaminaci髇. Sin embargo como se

Maximiliano E. Korstanje

290

Sobre Como Varian las Firmas Manuscritas con el Tiempo: una Modelizacion Sigma Lognormal  

E-print Network

tecnolog磇a emergente, se debe dedicar esfuerzo a este tema. El t磂rmino ageing se usa generalmente para las funciones de presi磑n dadas por la mayor磇a de los dispositivos de adquisici磑n on-line actuales

Autonoma de Madrid, Universidad

291

Memorias Tercer Congreso Internacional sobre la Ense馻nza de la Matem醫ica Asistida por Computadora  

Microsoft Academic Search

Un ambiente de aprendizaje apoyado con computadoras bajo un enfoque algor韙mico, por medio de presentaciones de PowerPoint, puede resultar de gran ayuda para la en se馻nza de la Matem醫ica. Dentro del proceso de ap rendizaje, en la fase de motivaci髇 puede resultar altamente estimulante a n ivel sensorial; en la fase de comprensi髇 permite l a reiteraci髇 de los conceptos

Lorena Acu馻; Maricella Becerril; Elsie Villalobos

292

Met醘oras del artista adolescente: El juego alucinante en Sobre las mismas rocas  

E-print Network

concebirla como "el exterior de una calle con edificios al fondo. Quiz醩 motivos abstractos, geom閠ricos. Puede reducirse a cortinas negras o a la simple boca de un escenario desierto. Pero en todo momento ser seca, sobria, sin detalles innecesarios" (22... destruidos, los in鷗iles, los despose韉os, los ilusos y los so馻dores, los que el pensamiento activo inutiliza sus piernas, mis hermanos, a 閟os los veo venir entre las sombras" (48). La impl韈ita negaci髇 del ag髇, del ilynx mareante, de la m韒ica en su...

Febles, Jorge

1994-04-01

293

Efeito do tratamento qu韒ico sobre a conserva玢o de sementes de milho durante o armazenamento  

Microsoft Academic Search

The purpose of this research was to study the effect of varying dosages of insecticide and fungicide on the conservation of stored seeds. The products and dosages for each 1000Kg of seeds were: 1) control; 2) aniline (936mL); 3) aniline (936mL) + Thiabendazole (120g) + Dicarboximida (187.5g) + Pirimifos- methyl (6.25mL) + Deltamethrin (0.75mL); 4) aniline (936mL) + Thiabendazole (240g)

Simone Aparecida Fessel; Elisabeth Aparecida Furtado de Mendon鏰; Roberto Venceslau de Carvalho; Roberval Daiton Vieira

2003-01-01

294

Gera玢o e transmiss鉶 da energia el閠rica: impacto sobre os povos ind韌enas no Brasil  

Microsoft Academic Search

This paper presents an overview of the effects of electric power generation and trans- mission on indigenous communities in Brazil. According to data from FUNAI (the Brazilian gov- ernment's Board of Indian Affairs), there are 156 cases of direct impact, present or future, of the electric power sector on Indian settlements geographically distributed throughout Brazil, 65% of which are located

Sergio Koifman

2001-01-01

295

Sobre as afinidades entre a filosofia de Francis Bacon e o ceticismo  

Microsoft Academic Search

reSumo Este texto se ocupa de um exame, em car醫er introdut髍io, das rela珲es entre a reflex鉶 de Bacon acerca das limita珲es de nossas faculdades e o ceticismo filos骹ico um tema pouco considerado pela literatura mais re- cente, a despeito das muitas refer阯cias a tal filosofia. Ainda que, primeira vista, tais refer阯cias possam parecer vagas e imprecisas, pensamos que

Luiz A. A. Eva

2006-01-01

296

Dise駉 metodol骻ico dela Encuesta Nacional sobre Violencia contra las Mujeres en M閤ico  

Microsoft Academic Search

Abstract Objective. To describe the methodology, the research de- signs used, the estimation and sample selection, variable definitions, collection instruments, and operative design and analytical procedures ,for the National Survey Violence Against Women,in Mexico. Material and Methods. A com- plex (two-step) cross-sectional study was designed and the qualitative design was carried out using in-depth interviews and participant observation,in health,care units.

Gustavo Olaiz; Aurora Franco; Lic en Tr Soc; Oswaldo Palma; Carlos Echarri; en Demograf韆; M en Antrop; Cristina Herrera

297

Dise駉 metodol骻ico de la Encuesta Nacional sobre Violencia contra las Mujeres en M閤ico  

Microsoft Academic Search

Objective. To describe the methodology, the research de- signs used, the estimation and sample selection, variable definitions, collection instruments, and operative design and analytical procedures for the National Survey Violence Against Women in Mexico. Material and Methods. A com- plex (two-step) cross-sectional study was designed and the qualitative design was carried out using in-depth interviews and participant observation in health

Gustavo Olaiz; Aurora Franco; Oswaldo Palma; Carlos Echarri; Rosario Valdez; Cristina Herrera

2006-01-01

298

EFECTO DE LA DENSIDAD DE SIEMBRA SOBRE EL RENDIMIENTO Y CALIDAD DEL FORRAJE DE MA蚙1  

Microsoft Academic Search

Effect of plant density on yield and quality of corn fodder. The experiment was condunted at the Alfredo Volio Mata Experimental Station of the University of Costa Rica, located at 1542 meters above sea level. The purpose was to determine the effect of plant density on total forage mass and the nutritive value of corn. Three diferent plant distances we-

Jorge Elizondo; Carlos Boschini

299

Declaraci髇 sobre los cambios que tendr醤 lugar pr髕imamente en los programas de estudios cl韓icos del NCI  

Cancer.gov

Los estudios cl韓icos son elementos fundamentales en la transformaci髇 de los descubrimientos cient韋icos en m閠odos pr醕ticos para prevenir y tratar el c醤cer. En esta declaraci髇, hacemos un resumen de los cambios que est醤 teniendo lugar en las organizaciones que realizan estudios cl韓icos bajo los auspicios del NCI.

300

ACCIONES INDESEABLES DE LOS TIC-MEDIOS SOBRE LA EDUCACI覰 AMBIENTAL  

Microsoft Academic Search

En este trabajo argumentaremos que la educaci髇 en general y en particular la ambiental, tanto formal como no formal, en el caso ideal de que se realicen con una efectividad considerable (lo cual est muy lejos de la realidad) a trav閟 de actividades planificadas en las escuelas, no s髄o no puede tener un desarrollo importante en el medio en que

Luis Quintanar Medina

2012-01-01

301

Algunas consideraciones sobre la introducci髇 de las tecnolog韆s de la informaci髇 en la educaci髇  

Microsoft Academic Search

El auge que ha tenido la introducci髇 de las Tecnolog韆s de la Informaci髇 y la Comunicaci髇 (TIC) en la sociedad actual, exige la b鷖queda de nuevas alternativas para lograr un 髉timo aprovechamiento de estos medios en la soluci髇 de problemas docentes educativos. Con el objetivo de elevar la calidad y la eficiencia del proceso de ense馻nza-aprendizaje, se instrumentan desde hace

Noelio V醶quez Vargas

2011-01-01

302

EFEITOS DA MATURA敲O BIOL覩ICA SOBRE A POT蔔CIA ANAER覤IA E AER覤IA EM JOVENS PRATICANTES DE FUTEBOL  

Microsoft Academic Search

The study verified the effect of the maturation on the anaerobic power (AnP) and the aerobic power (AP) of young athletes soccer players, with ages between 11 and 15 years. The athletes of the masculine sex (n = 67), they were submitted to two tests maximum of running of 40 seconds, and, of 5 minutes, in agreement with protocol of

Osvaldo Donizete Siqueira; Luiz Antonio Crescente; Anneliese Schonhorst Rocha

303

NOVOS DADOS SOBRE LEPIDOPTERA E HYMENOPTERA (INSECTA) DA ILHA GRACIOSA, A荗RES  

Microsoft Academic Search

This work provides a list of butterflies and moths collected on Graciosa Island (Azores) during June 07-15, 2004. Thirty three species were recorded, eleven of which are new citations to this island: Opogona sacchari (Bojer, 1856), Phyllocnistis citrella Stainton, 1856, Cosmopterix parietariae M. Hering, 1931, Tebenna bjerkandrella (Thunberg, 1784), Nomophila noctuella (Denis & Schifferm黮ler, 1775), Vanessa atalanta (Linnaeus, 1758), Vanessa

JO肙 TAVARES; LU蚐A OLIVEIRA; VIRG蚅IO VIEIRA; JEREMY MCNEIL; ROSA MARTINS

2004-01-01

304

Educando e Aprendendo sobre a Informa玢o de Transtornos Alimentares Presente na Internet  

Microsoft Academic Search

The Nervous Anorexia and the Nervous Bulimia are crescent interest topics in research. The kind of public information about the theme is of fundamental importance to determine the politics and practices in health. The coming of Internet provoked a paradigm change in the way how the information about health are transmitted and presented, creating a new and complex kind of

Carolina Sturm Trindade; Lucia Marques Stenzel; Caroline Tozzi Reppold; Maina Hemmann Strack; Cristine da Silva Medeiros; Sabrina Souza da Silva

305

Diferencias en el desarrollo de Panonychus citri (McGregor) sobre hojas de diversas especies  

E-print Network

hojas de: naranjos Navel y Valencia (dos variedades de Citrus sinensis), mandarino Clementino (C cle feuilles de : orangers Navel et Valencia (deux vari閠閟 de Citrus sinensis), mandarinier Clementino (C and oviposition of mites. Leaves of Navel and Valencia oranges (varieties of Citrus sinensis), Clementino mandarin

Paris-Sud XI, Universit de

306

Gu韆s de pr醕tica cl韓ica de la Sociedad Espa駉la de Cardiolog韆 sobre el desfibrilador autom醫ico implantable  

Microsoft Academic Search

Desde el primer implante en humanos en el a駉 1980, la tecnolog韆 de los desfibriladores autom醫i- cos implantables ha mejorado considerablemente y el n鷐ero de implantes sigue creciendo cada a駉. Los desfibriladores autom醫icos implantables que utilizan cable endoc醨dico y choques bif醩icos son actualmente los dispositivos de elecci髇 y son sufi- cientes en casi el 100% de los pacientes. Este docu-

Juli醤 P閞ez-Villacast韓; Jos Ram髇 Carmona Salinas; Antonio Hern醤dez Madrid; Emilio Mar韓 Huerta; Jos Luis Merino Llorens; Jos Ormaetxe Merodio; 羘gel Moya

307

Toxicidade letal e subletal do nim sobre o pulg鉶-verde e seu predador Eriopis connexa  

Microsoft Academic Search

The aim of this work was to assess, in laboratory, the effects of neem seed extract on chilli pepper pest, the green peach aphid Myzus persicae (Sulzer) and on its predator Eriopis connexa (Germar). Chilli pepper leaves were treated with an aqueous solution of neem seed extract (1% of azadiractin) at concentrations of 0.5 and 1.0%, using acephate (0.75 g

Madelaine Venzon; Maria da Consola玢o Rosado; Angelo Pallini; Amanda Fialho; C閘ia de Jesus Pereira

2007-01-01

308

Algumas observa珲es sobre o n鉶 verbal: neuroci阯cia da mem髍ia e cl韓ica psicanal韙ica  

Microsoft Academic Search

The neuroscience of memory may enrich our understan ding of psychoanalytic theory. Recent studies show that memory is a process activated by a retrieval cue. Freud and others had already shown that each memory is constructed, tran sformed, and expanded anew leading to new networks and change Therefore, it can expand an d create new meanings and psychic changes. These

Flavia Sollero-de-Campos

309

Ecocardiograf韆 tridimensional. Nuevas perspectivas sobre la caracterizaci髇 de la v醠vula mitral  

PubMed Central

Recent developments in three-dimensional echocardiography have made it possible to obtain images in real time, without the need for off-line reconstruction. These developments have enabled the technique to become an important tool for both research and daily clinical practice. A substantial proportion of the studies carried out using three-dimensional echocardiography have focused on the mitral valve, the pathophysiology of mitral valve disease and, in particular, functional mitral regurgitation. The aims of this article were to review the contribution of three-dimensional echocardiography to understanding of the functional anatomy of the mitral valve and to summarize the resulting clinical applications and therapeutic implications. PMID:19232192

Solis, Jorge; Sitges, Marta; Levine, Robert A.; Hung, Judy

2010-01-01

310

DISYUNTIVAS EN LAS CONCEPCIONES SOBRE AUTONOM虯 Y BENEFICENCIA QUE AFECTAN LA TERAP蒛TICA DEL INTENTO SUICIDA1  

PubMed Central

El objetivo del trabajo es conocer las disyuntivas entre los principios de beneficencia y autonom韆, que se presentan en la relaci髇 m閐ico-paciente, durante la terap閡tica del intento de suicidio. La investigaci髇 se realiz en dos hospitales psiqui醫ricos de la Ciudad de M閤ico. La muestra incluy a tres sujetos con intento de suicidio, mayores de 18 a駉s, que eran atendidos en consulta externa a causa de una lesi髇 autoinfligida en el 鷏timo a駉, y a tres psiquiatras que trataban a estos pacientes. La informaci髇 se obtuvo previo consentimiento informado en entrevistas individuales. Se llev a cabo un an醠isis de discurso argumentado para encontrar los significados que los participantes otorgaron a los principios bio閠icos y las posibles disyuntivas entre 閟tos. Las discordancias entre la beneficencia y la autonom韆 estuvieron relacionadas con el beneficio del tratamiento, el respeto por los valores y las creencias de los pacientes, entre otros. Este trabajo presenta consideraciones 閠icas relevantes en el escenario cl韓ico, al ofrecer al psiquiatra un an醠isis bio閠ico que le permita actuar de acuerdo con la beneficencia y respetando la autonom韆 del paciente frente a casos de intento de suicidio y, de esta forma procurar una mejor atenci髇 para ellos. PMID:20830214

Mondrag髇, Liliana; Monroy, Zuraya; Ito, Ma. Emily; Medina-Mora, Dra. Ma. Elena

2010-01-01

311

Perfiles de ingreso en el tiempo: an醠isis de descomposici髇 sobre el seguimiento de una muestra  

Microsoft Academic Search

En este art韈ulo se utiliza la teor韆 del capital humano para analizar las variaciones de los ingresos que provienen del trabajo de jefes de hogar radicados en Santiago, en los a駉s 1968 y 1979. Aqu, se aplica un m閠odo de descomposici髇 de ingresos a fin de detectar los factores principales que explican dichas variaciones. Se concluye que el factor que

Juan Foxley

312

Resolucion numerica de problemas evolutivos semilineales sobre dominios irregulares mediante metodos mimeticos paralelizables  

Microsoft Academic Search

@t = r (K(x)r(x;t)) S((x;t)) + f(x;t); (x;t) 2 (0;T); acompa~nada de ciertas condiciones iniciales y de contorno. Suponemos que el dominio espacial 礡2 es un conjunto abierto y acotado de geometr秶a irregular, K es un tensor simetrico y defl- nido positivo, S es una funcion no lineal suave y f es un termino fuente\\/sumidero.

L. Portero; A. Arraras; J. C. Jorge

2007-01-01

313

PROYECTO DE CONVENCIN SOBRE LA PREVENCIN Y LA PENALIZACIN DEL DELITO DE DESARROLLO,  

E-print Network

suponen una amenaza para el bienestar de toda la humanidad y de las generaciones futuras, Resueltos a que futuras, a eliminar la amenaza de las armas biol骻icas y qu韒icas, Han convenido en lo siguiente: #12

Sussex, University of

314

Podredumbres basales de Gypsophila paniculata (Caryophyllaceae): Agentes causales y su patogenicidad potencial sobre Dianthus caryophyllus (Caryophyllaceae)  

Microsoft Academic Search

Summary: Basal rots of Gypsophila paniculata (Caryophyllaceae). Causal agents and its potential pathogenicity on Dianthus caryophyllus (Caryophyllaceae) The aims of the paper were to determine the causal agents of basal rots of Gypsophila paniculata in Argentina, and to evaluate its possible pathogenicity on Dianthus caryophyllus. Fusarium solani, F. oxysporum, Phytophthora nicotianae, Rhizoctonia solani, F. graminearum, F. verticilloides, F. equiseti and

SILVIA MAR虯 WOLCAN; L虯 RONCO; GLADYS ALBINA LORI

315

RESOLUO N. 01/PPGRGV/2012, de 29 de maro de 2012 Dispe sobre credenciamento e  

E-print Network

, participante em grupo de pesquisa cadastrado no Diret贸rio de Pesquisa do CNPq, publica莽玫es de livros, cap铆tulos de livros, entre outros, a serem definidas pela Comiss茫o de Credenciamento. Art. 3.掳 O pedido de livros, cap铆tulos de livros, entre outros, a serem definidas pela Comiss茫o de Credenciamento. Art. 5.掳 O

Floeter, Sergio Ricardo

316

VI-1.20(A) POLTICA DE LA UNIVERSIDAD DE MARYLAND SOBRE LA CONDUCTA SEXUAL INDEBIDA  

E-print Network

razones de sexo, lo cual es contrario al C贸digo de Equidad de la Universidad de Maryland, Diversidad e sexual indebida, que puede ser entre personas del mismo sexo o del sexo opuesto. La conducta sexual indebida puede ser una forma de discriminaci贸n por razones de sexo, prohibida por la legislaci贸n federal y

Bernstein, Joseph B.

317

縋ODEMOS ESTIMAR EL IMPACTO DE LAS TRANSFORMACIONES DEL PAISAJE SOBRE LA ECODIVERSIDAD?  

Microsoft Academic Search

Different approaches to measure the diversity at local level (alpha and beta diversity), at regional level (gamma-diversity) and also at the landscape level (ecodiversity, in sense of Naveh) have been proposed. Of all these approaches, the ecodiversity allows to know the habitat availability, the connectivity among habitat and to achieve an idea of the space variability of the ecosystems. Seven

Juan J. NEIFF; Marcelo ROL覰; Sylvina L. CASCO

318

INFLUENCIA DE LA INOCULACI覰 DE MICROORGANISMOS SOBRE LA TEMPERATURA EN EL PROCESO DE COMPOSTAJE  

Microsoft Academic Search

Man's activity generates an enormous volume of waste which, at present, is causing severe storage problems worldwide. Composting is a possible alternative to storage. The objectives of this work were to measure the evolution of temperature during the process of organic material composting with different C\\/N ratios, with and without inoculation with microorganisms, so as to select the shortest composting

MAR虯 FERNANDA TORTAROLO; MAT虯S PEREDA; MARTHA PALMA

319

Recopilacion Bibliografica Sobre Investigacion y Cambio Cultural (Bibliographic Compilation about Cultural Investigation and Exchange).  

ERIC Educational Resources Information Center

The bibliography forms part of a project to define guidelines for a method of cultural investigation in the education of adults. A brief introduction is followed by a list of libraries and the plan for the listing of entries in the bibliography. Entries are arranged alphabetically by author under the following general headings: background on the

Centro Latinoamericano de Educacion de Adultos, Santiago (Chile).

320

Aqu hay otros sitiosWeb sobre ayuda financiera que vale la pena consultar  

E-print Network

doctorado u otro titulo terminal: 78% Profesores de jornada completa: 90% PRESUPUESTO ESTIMADO DE LOS vive en el campus universitario durante el a駉 acad閙ico 20082009. *Estascifrass representan el costo General de Carolina del Norte, por ello, los costos son estimados y no exactos. U.P. 08-232 Printed

321

緾u醤to m醩 vale prevenir que curar? Reflexiones sobre la distribuci髇 de gastos en la atenci髇 m閐ica  

Microsoft Academic Search

Seg鷑 la sabidur韆 convencional, m醩 vale prevenir que curar: el prevenir un accidente o una enfermedad no s髄o evita dolor y sufrimiento, sino que ser m醩 barato que el tratamiento m閐ico a la persona enferma o herida. A veces esto es claramente cierto, pero en otros casos puede ser cuestionable. Como m韓imo, la distribuci髇 de recursos m閐icos entre atenciones preventivas

Philip Musgrove

1987-01-01

322

Movimentos sociais, sindicato e imigrao Um estudo sobre o movimento dos trabalhadores sem-documentos na  

E-print Network

que a autora contextualiza e problematiza a nomenclatura a partir da luta pol铆tica dos trabalhadores uma data fundamental na hist贸ria dos movimentos sociais e em particular das lutas dos imigrantes. Foi

Paris-Sud XI, Universit茅 de

323

Efecto de Aspersiones al Follaje o Inyecciones al Tronco sobre la \\  

Microsoft Academic Search

The effect of a single foliar spray of cobalt sulphate (500 or 1000 mg?liter -1 ), ascorbic acid (500 or 1000 mg?liter - 1 ), or potassium metabisulphite (300 or 600 mg?liter -1 ) as well as trunk injections of Metidation (5 ml?m -2 canopy, applied twice) or phosphorous acid (2 g?m -2 canopy, applied two or four times) on

Jos Le髇-de Alba

324

Vinte perguntas e respostas sobre o Programa Santander TOP USA na UFMG  

E-print Network

University Douglas Sears dsears@bu.edu University of Massachusetts Susan Kelly skelly@umassp.edu Brown? Tamb閙 n鉶. 10. Quais as universidades norte americanas envolvidas? S鉶 elas: Boston University, Brown University Matthew Gutmann matthew_gutmann@brown.edu Harvard University Jason Dyett jdyett

Chaimowicz, Luiz

325

ESTUDIO DE LA RESISTENCIA AL DESGASTE DE RECUBRIMIENTOS DEPOSITADOS MEDIANTE PROYECCI覰 T蒖MICA SOBRE ACERO AL CARBONO  

Microsoft Academic Search

Coatings of Ni - Al, Ni - SiC, Ni -WC y Ni - W- Co, were deposited and its capacity to protect of the abrasive wear effects on the steel substrate where they were deposited was studied. Coatings were obtained by thermal spraying using oxygen - acetylene combustion gotten by an Eutalloy torch of the Eutectic Castolin trade mark. Materials

SERGIO ECHEVERRI; Estudiante Ingenier韆; JULIANA BEDOYA; Estudiante Ingenier韆 de Materiales; FABIO VARGAS; Ingeniero Metal鷕gico

2007-01-01

326

Efeito da homeopatia Arnica montana, nas pot阯cias centesimais, sobre plantas de artem韘ia  

Microsoft Academic Search

Effect of homeopathy Arnica montana, centesimal potencies, on plants of artem韘ia. Forty five days after the transplant to pots, plants of Tanacetum parthenium (L.) Schultz- Bip. gotten from seeds, received homeopathics solutions of Arnica montana, centesimal potencies (CH1, CH2, CH3, CH4 and CH5). The applications, weekly, were done in the same schedule, in the soil, after dilutions in deionized water.

L. M. Carvalho; S. P. Lisboa; M. A. Souza

327

Los ojos de la NASA sobre la Tierra - Duration: 97 seconds.  

NASA Video Gallery

La NASA cuenta con m醩 de una decena de sat閘ites que estudian la Tierra. Conoce la informaci髇 que recaban los sat閘ites, junto con Gilberto Col髇, asistente especial del subdirector del Centro de...

328

Uma revis鉶 sobre instrumentos de avalia玢o do estado funcional do idoso  

Microsoft Academic Search

The Comprehensive Geriatric Assessment is char- acterized as a functional and interdisciplinary evaluation. The first step is the assessment of functional status, which lies at the core of the procedure and can be defined by the level at which an individual performs roles and activi- ties of daily living. Such assessment can be car- ried out by instruments (questionnaires) whose

Carlos Montes Paix鉶 Jr.; Michael E. Reichenheim

2005-01-01

329

Efecto de las terrazas sobre la diversidad de artr髉odos caminadores en cultivos de soja  

Microsoft Academic Search

Effect of terraces on soil dwelling arthropod diversity in soybean production: The loss of biodiversity in agroecosystems constitutes a main issue in ecological research. Steep backslope terraces, used for soil erosion control, could act as refuges for arthropods in agricultural landscapes. Total and predator arthropod species richness and abundance were surveyed in soybean fields in Entre R韔s under a no-till

FEDERICO WEYLAND; MAR虯 ELENA ZACCAGNINI

330

Demanda por Servicios P鷅licos Domiciliarios en Colombia y Subsidios: Implicaciones sobre el Bienestar  

Microsoft Academic Search

En el presente trabajo se estiman funciones de demanda por los servicios p鷅licos domiciliarios de agua y electricidad para una muestra de las ciudades m醩 importantes en el pa韘. Teniendo como fuente de informaci髇 la Encuesta de Calidad de Vida 2003 se utiliza una metodolog韆 no lineal que aprovecha las particularidades de la funci髇 de oferta de estos bienes (bloque

Carlos Medina; Leonardo Fabio Morales

2007-01-01

331

Sobre la aplicaci髇 de la analog韆 para derivar un teorema extendido de Pit醙oras para el tetraedro  

Microsoft Academic Search

A Abbssttrraacctt:: The trirectangular tetrahedron is a three-dimensional generalization of the two-dimensional right triangle. It is a corner cut from a cube by means of an oblique plane, just as a right triangle is a corner cut from a square by means of an oblique line. The tetrahedron mentioned also obeys an Extended Pythagorean Theorem in which the sum of

M. A. Murray-Lasso

2003-01-01

332

Notas sobre los Sonidos Consonantes en Espanol (Notes on Consonant Sounds in Spanish)  

ERIC Educational Resources Information Center

This paper examines the Spanish phonetic system, as set forth by Navarro Tomas in his "Manual de Pronunciacion Espanola," and discusses the influences exerted by certain sounds over others. (Text is in Spanish.) (CK)

Ezquerra, Raimundo

1974-01-01

333

BIBLIOGRAF虯 COMENTADA SOBRE LOS AN罫ISIS DE EGAGR覲ILAS DE AVES RAPACES EN ARGENTINA  

Microsoft Academic Search

s. - Annotated bibliography on raptor pellets analyses in Argentina. - We compiled an annotated bibliography on raptor pellets analyses in Argentina. It includes, from 1961 to 2000, 142 papers, 9 theses, and 48 published abstracts concerning 13 raptor species, with comments on methodology, natural history, and main points of interest. Tyto alba was the main source for Argentinean analyses,

Ulyses F. J. Pardi馻s; Sebasti醤 Cirignoli

334

INFORMACI SOBRE LA FUNDACI CENTRE CIM DOCUMENT INFORMATIU CG 3/11 2011  

E-print Network

Transfer鑞cia de Tecnologia i Coneixement (Producte i proc閟) Fundaci驠undaci CIMCIM Generaci de Tecnologia la UPC, per a contribuir al desenvolupament de la tecnologia i aportar coneixement a les empreses'any 2005 Institut Tecnol騡ic en Tecnologies Avan鏰des de la Producci: Centre de Tecnologia + Centre de

Casanellas, Marta

335

El peligro de las (in)definiciones: apuntes para un dosier sobre la \\  

Microsoft Academic Search

Toda definicio?n supone en el fondo una cierta forma de res- \\u000atriccio?n. Definir algo es, en esencia, dejar fuera de 搇o defi- \\u000anido todo lo que 損or defecto no es (ejemplo: definir \\u000a損erro implica dejar claras las diferencias que hay entre ese ani- \\u000amal y, pongamos por caso, un gato... o una silla, tanto da). En el \\u000atema de la

Fernando de Felipe; Joaquim Roglan; V韈tor-M. Amela; Joan Tharrats; Salvador Llopart; Bosco Palacios; Mireya Marr髇; Mart韓 G醠vez; David Saiz; F閘ix Romeo

2007-01-01

336

Un modelo econom閠rico sobre el consumo de agua en el estado de Guanajuato  

Microsoft Academic Search

El problema del agua se agudiza debido a cuestiones de baja eficiencia en el uso del recurso. Por lo general, los vol鷐enes de agua que se aplican a los cultivos exceden a sus requerimientos. Entre los cultivos de m醩 baja eficiencia se encuentra la alfalfa, uno de los insumos importantes para la producci髇 pecuaria del Estado. De acuerdo a investigaciones

Eugenio Guzman Soria

2006-01-01

337

Conservaci髇 de material hist髍ico sobre papel en el Observatorio Astron髆ico de la Universidad Nacional de C髍doba  

NASA Astrophysics Data System (ADS)

At the recently created Astronomical Museum ``Pte. Sarmiento - Dr. Benjamin Gould", the task of preventive conservation of historic documents has been faced. These materials include: 1) letters exchanged between national authorities and the directors of the Observatory, during the first decades (1870-1880-1890); b) original observation logs from these very first times, containing astrometrical and photometrical data; c) a variety of ancient books and papers; d) administrative documents. The state of conservation of this patrimony was varied: since well-conserved books and letters, to highly degraded logs. The observation logs written by B. Gould and the astronomers who followed him had been stocked in a safe with a permanent humidity of about 70 %, without any ventilation and exposed to the attack of insects of the family ``dermestidae." These conditions could not be worse for the conservation of paper. In order to stop the proccess of degradation and create a healthy environment for written-paper conservation, a team was formed with personnel belonging to the Cultural Area of the Municipality. The tasks being performed on the observation logs are: 1) an initial, mechanical cleaning, performed once the material is extracted from the contaminated safe: by these means, adult insects and pupas are removed 2) a stage of about two weeks of duration, in which the logs are mantained in a vacuum chamber, in orden to completely eliminate the adult, pupa and egg stage insects by anoxia 3) the final mechanical cleaning 4) storage in a clean location. In order to perform these tasks, we work in collaboration with the Environmental Observatory of the City, and the group of Material-Science Research of Fa.M.A.F. Regarding the letters, a mechanical cleaning was performed. After that, the letters were digitized by means of a scanner, inventoried, put inside acid-free polipropylene envelops and filed for conservation, protected from intense light and external sources of contamination. Copies of these letters will be included as exhibits.

Laguzzi, N.; Tonini, A.; Andreoli, G.; Goldes, G.; Paolantonio, S.; Cequeira, F.; Landi, L.; Alba, J.

338

Bibliografia sobre el "bilinguismo" del Paraguay (A Bibliography on Bilingualism in Paraguay)  

ERIC Educational Resources Information Center

This bibliography of ninety-five entries ranging in publication date from 1847 to 1947 brings together information from areas of history, literature, sociology, anthropology, sociolinguistics, descriptive linguistics, folk-lore and language planning, the central criterion being the relationship of these areas specifically to the bilingual

Melia, Bartomeu

1974-01-01

339

REDES TRANSACIONALES: APORTES PARA LA LECTURA SOBRE EL CASO AMERICANO DE LA ALIANZA SOCIAL CONTINENTAL  

E-print Network

del 羠ea de Libre Comercio para las Am閞icas (ALCA) desarrollada por un novedoso actor transnacional y recomposici髇 sindical a nivel internacional. Estas cuestiones resultan cardinales para comprender el relieve al proyecto del 羠ea de Libre Comercio para las Am閞icas (ALCA) en el continente americano. Con este

Paris-Sud XI, Universit de

340

Perspectiva General sobre la Sordo-Ceguera (Overview on Deaf-Blindness). DB-LINK.  

ERIC Educational Resources Information Center

This overview provides basic information on the causes of deaf-blindness and the particular challenges faced by individuals who are deaf-blind. Causes of deaf-blindness include various syndromes, multiple congenital anomalies, prematurity, congenital prenatal dysfunction, and various postnatal causes. Differences between people deaf-blind from

Miles, Barbara

341

Influ阯cia de fatores ambientais sobre o crescimento in vitro de Hypnea musciformis (Wulfen) Lamouroux (Rhodophyta)  

Microsoft Academic Search

The influence of environmental factors on in vitro growth of Hypnea musciformis (Wulfen) Lamouroux (Rhodophyta)). Hypnea musciformis (Wulfen) Lamouroux (Hypneaceae, Gigartinales) is an important carrageenan resource of Brazil used in the industry of phycocolloid gelling agent. The objective of this study was to investigate the influence of temperature (20 篊 and 25 篊), enriched seawater with Provasoli's solution and aeration

ISOLDA C. BRAVIN; YOCIE YONESHIGUE-VALENTIN

2002-01-01

342

USU罵IO OU CIDAD肙? REFLEX誆S LIVRES SOBRE A EXPERI蔔CIA DE GEST肙 DE RECURSOS H虳RICOS NO BRASIL  

Microsoft Academic Search

Resumo - O grande desafio neste in韈io de s閏ulo, para uma gest鉶 efetiva e sustent醰el de recursos h韉ricos, considerar o contexto social e pol韙ico que condiciona as a珲es do Estado e as possibilidades de sucesso de qualquer pol韙ica p鷅lica. O pa韘 tem perdido tempo e dinheiro discutindo como se chegar a um modelo ideal de gest鉶 de 醙uas, sem

Ant鬾io Augusto; Rossotto Ioris

343

ATIVIDADE INSETICIDA DE 覮EOS VEGETAIS SOBRE Sitophilus zeamais MOTS. (COLEOPTERA: CURCULIONIDAE) EM MILHO ARMAZENADO  

Microsoft Academic Search

RESUMO - Foram testados os 髄eos de andiroba (Carapa guianensis Aubl.), copa韇a (Copaifera sp.), eucalipto (Eucaliptus globulus Labill. e Eucaliptus citriodora Hook.), nim (Azadirachta indica A. Juss), eugenol, pequi (Caryocar brasiliense Camb.), alecrim (Lippia gracillis HBK.) e cedro (Cedrela fissilis Vell.), em adultos de Sitophilus zeamais Mots. (Coleoptera: Curculionidae). No teste sem chance de escolha, 20 g de gr鉶s de

Rodrigo Leandro; Braga de Castro Coitinho; Jos Vargas de Oliveira; Cl醬dio Augusto; Gomes da C鈓ara

344

MANIFESTA钦ES DO BIOCLIMA DO ACRE SOBRE A SA贒E HUMANA NO CONTEXTO SOCIOECON訫ICO DA AMAZ訬IA  

Microsoft Academic Search

Relationships between environment and health associated to Amazonian climate, in particular in Acre, shows high numbers of seasonal incidences due to infectious, parasitary and respiratory illnesses in the population, with picks of respiratory illnesses during the dry season, in correspondence with high smoke concentration in the atmosphere, as a result of biomass burning in Amazonia. Manifestations of climate changes and

Alejandro Fonseca Duarte; M醨cio D阯is Medeiros Marcarenhas

345

VI Jornades de Debat en Histria de l'IUHJVV Conferncia Internacional sobre "Arqueologia dels crims  

E-print Network

Humanity and Genocide" Barcelona, 13-14 desembre 2012/Barcelona, 13-14 diciembre/Barcelona, December 13 demanded severe punishment. In 1948, the UNO defined the crime of genocide. In 1998, the International of archaeology in the prosecution of crimes against humanity and genocide. #12;2 Programa/Programa/Program: 13

Verschure, Paul

346

Reflexiones Sobre la Capacitacion de Docentes (Reflections on In-Service Teacher Training).  

ERIC Educational Resources Information Center

Everyone concerned with educational systems performance agrees that the improvement of teaching qualities is a high priority in any educational effort. Teachers are assigned the role of change agents and are presented with new challenges, e.g., to make education global and permanent, flexible enough to serve in any environment (in or out of the

Valle, Victor M.

347

As crian鏰s pequenininhas produzem cultura? Considera珲es sobre educa玢o e cultura infantil em creche  

Microsoft Academic Search

Resumo: Com o objetivo de compreender os encontros e desencontros do mundo da in- f鈔cia no 鈓bito da educa玢o e da cultura em creche, assim como identificar as concep珲es do brincar atribu韉as educa玢o infantil para crian鏰s entre Oe 3 anos de idade e contribuir assim para a constru玢o da Pedagogia da Educa玢o Infantil, este artigo busca, no di醠ogo e

Patr韈ia Dias Prado

348

Las energ韆s renovables: Perspectivas e impacto sobre el empleo en Asturias  

Microsoft Academic Search

RESUMEN El sector energ閠ico est experimentando transformaciones sustanciales como consecuencia del desarrollo de las energ韆s renovables, cuyo impulso no s髄o aporta beneficios ambientales, sino que tambi閚 reduce la dependencia energ閠ica y contribuye a la creaci髇 de empleo. En este trabajo realizamos un an醠isis prospectivo del empleo en el sector energ閠ico en Asturias hasta el a駉 2010, estudiando el impacto que

Blanca Moreno Cuartas; Ana Jes鷖 L髉ez Men閚dez

2008-01-01

349

Apuntes sobre la distribuci髇 geogr醘ica de Neoleucinodes elegantalis (Lepidoptera: Crambidae) en Colombia  

Technology Transfer Automated Retrieval System (TEKTRAN)

Neoleucinodes elegantalis is considered the most limiting pest for production and merchandising of solanaceous fruit and vegetables in the Neotropics. The present study updates the geographic distribution of N. elegantalis in areas of major agricultural production of Solanum lycopersicum, S. melong...

350

Se inicia estudio de los NIH sobre respuestas excepcionales al tratamiento del c醤cer  

Cancer.gov

La Iniciativa de Respuestas Excepcionales (Exceptional Responders Initiative), un estudio que investiga los factores moleculares de los tumores en pacientes de c醤cer que responden en forma excepcional al tratamiento con medicamentos, se inici hoy bajo la gu韆 del Instituto Nacional del C醤cer (NCI). Los cient韋icos tratar醤 de identificar en los tumores las caracter韘ticas moleculares que predicen si un medicamento o una clase de medicamento en particular ser beneficioso o no.

351

Preferencia alimentaria de ara馻s Misumenops pallidus (Araneae: Thomisidae) sobre potenciales insectos presa de cultivos de alfalfa  

Microsoft Academic Search

Feeding preferences of the spider Misumenops pallidus (Araneae: Thomisidae) on potential prey insects from alfalfa crops. The spider Misumenops pallidus (Thomisidae) is commonly found in alfalfa crops. We studied its predatory preferences on potential insect prey, particularly regarding agroecosystems pests. Two kinds of tests were done under normal laboratory conditions: simultaneous presentation of prey (n= 215) and alternative prey test

Germ醤 Cheli; Andrea Armendano; Alda Gonz醠ez

2006-01-01

352

Profesionalismo: Un estudio fenomenologico sobre experiencias de universitarios en programas de salud  

NASA Astrophysics Data System (ADS)

Some studies suggest that, upon admission, medicine programs students display eagerness for community service, aspirations to be useful, and to contribute to society's well-being. Those same studies reflect that qualities of idealism, moral nature, and internal motivation, suffer a subsequent diminishing. The researchers inferred that the main reason for this process of change in the mood and disposition of these future physicians lies in the modeling they receive from medical professionals throughout clinical learning activities, by way of behavior and relationships exhibited during daily interaction with peers, patients and the students themselves. This phenomenological study used a cross-sectional sample to explore the experiences of future health workers as they went through didactic and clinical phases of their training curriculum. The study employed semi-structured interviews and reflective journals to explore those experiences and to discover the meanings ascribed by the participants. The analysis revealed that the students defined "professionalism" in terms of scientific knowledge, commitment, respect for human dignity, comradeship, courtesy, empathy, integrity, altruism, motivation. They also described their feelings as they went through the didactic and clinical experiences, and recognized as very important the extracurricular activities of community service, describing them as useful opportunities which contributed to understand their work in terms of a mission dedicated to the achievement of the social benefit. From their individual perspectives, the clinical environment could, in general, be described as congruent with those characteristics of professionalism. During the study we had the opportunity to share, in a little deeper way, the environment... the world... of this small group of young students as we went on trying to decipher their feelings and thoughts. At the end, we realized the richness of their sensibilities, we perceived the intensity of their moral and ethical convictions, we were able to understand their concerns, worries, struggles and efforts. This life event had profound and significant repercussions in our personal and professional life. As a result, and from now on, we will no longer look at our young scholars and apprentices without imagining a noble spirit, with goals which at times could seem unattainable... without completely visualizing or conceiving real hope for a better country.

Lopez Ortiz, Wilma J.

353

REFLEXIONES PRELIMINARES SOBRE UNA APLICACI覰 CIENT虵ICO-M蒁ICA DE ACTUALIDAD: LA CLONACI覰  

Microsoft Academic Search

Resumen: Este art韈ulo afronta el nuevo reto que la tecnociencia m閐ica ha abierto: la posibilidad de clonaci髇 terap閡tica o reproductiva. En el presente trabajo se aborda, clara y esquem醫icamente, la terminolog韆 cient韋ico-m閐ica, desde los conceptos de reproducci髇 sexual o asexual hasta la endonucleaci髇, pasando por los conceptos de embri髇 gam閠ico, som醫ico, de cultivo y c閘ulas madres, para ir realizando un

Jos Antonio Arranz; Xavier Ariza; Encarnaci Riudor; Lluis Vilar; Jordi Salvad; N鷕ia Galofr; Susana Vendrell; Josep Mar韆 Esquirol

2003-01-01

354

Productos de software para la facilitaci髇 del aprendizaje sobre sistemas de producci髇 de bovinos y ovinos  

Microsoft Academic Search

In this paper, we describe four developments oriented to help in the learning process on different issues of beef and sheep production systems. Also two preliminar tests for training of two of the products are presented. Products are a web-based Simulator of agricultural systems and three desktop software products, two about reproductive response of sheep and cattle, and one last

Claudio F. Machado; Mauricio Arroqui; Pablo Mangudo; Rodolfo Catalano; Eduardo Ponssa; Claudia Marcos

355

REVISI覰 SOBRE PULLOROSIS Y TIFOSIS AVIAR; NUEVOS ENFOQUES PARA VIEJOS CONCEPTOS  

Microsoft Academic Search

SUMMARY Pullorosis (P) and Fowl Typhosis (FT) are bacterial diseases of poultry, respectively caused by Salmonella Gallinarum biovars pullorum and gallinarum. Both diseases have been eradicated from industrial poultry farms in some developed countries although they still subsist in commercial farms of Latin America. They are horizontally and vertically transmitted. Mortality may be high during the first two weeks of

Pablo A. Chacana; Medicina Veterinari

356

MORISHIMA Y EL TEOREMA FUNDAMENTAL MARXIANO (Y ALGO SOBRE EL PROBLEMA DE LA TRANSFORMACI覰)  

Microsoft Academic Search

Este trabajo tiene la pretensi髇 de ser una cr韙ica al teorema formulado por Okishio y recogido por el gran economista marxista Michio Morishima. El resultado, como se ver, resulta sorprendente. Pero una advertencia: nada m醩 lejos de mi intenci髇 hacer siquiera un an醠isis hist髍ico de ambos problemas. Eso ya ha sido hecho, hay mucha literatura al respecto y ha servido

Antonio Mora Plaza

2010-01-01

357

Ahorre Energia: Consejos sobre el ahorro de dinero y energia en el hogar (Book)  

SciTech Connect

Learn how to save money with Energy Saver: Tips on Saving Money & Energy at Home, from the U.S. Department of Energy. The Energy Saver guide will help you reduce your monthly energy costs and live more efficiently. This guide takes you through the systems and appliances that consume the most energy in your home, and provides solutions to cut costs for you while saving the environment. The Energy Saver guide also includes transportation tips to help you save money at the pump.

Not Available

2014-09-01

358

LA PERSPECTIVA DEL PACIENTE SOBRE LA EFECTIVIDAD DE LA VACUNA ANTIGRIPAL  

Microsoft Academic Search

Objective: To evaluate from the perspective of the patient, the effectiveness of the vaccine against the influenza virus, to prevent Influenza. Materials and methods : surveys were conducted from July 8 until August 1 2008 to 335 patients ol- der than 65 years for a total population of 1458 patients. We included patients who attended the ser- vice Sanatorium Cardiocentro

Natalia Silvana; Ar醥z Olivos; Silvana Giselle D'Alesseandro; Natalia Cecilia R韔s; Miguel H閏tor Ramos

359

Invertebrate fauna associated with Torpedograss, Panicum repens (Cyperales: Poaceae), in Lake Okeechobee, Florida, and prospects for biological control  

SciTech Connect

Torpedograss, Panicum repens L., is an adventive, rhizomatous grass species that has become an invasive weed of terrestrial, wetland, and aquatic environments in tropical and subtropical regions worldwide. Until recently, strategies for controlling torpedograss in the USA have focused almost exclusively on mechanical and chemical methods, either alone or in combination, with varied results. A survey of the arthropods and nematodes currently associated with the plant in Lake Okeechobee, Florida, was conducted as part of a feasibility study to determine whether torpedograss is an appropriate target for a classical biological control program. Overall, approximately 4,000 arthropods and 400 nematode specimens were collected. Sweep, clipped vegetation, and soil core samples were dominated by representatives of the arthropod orders Hemiptera, Hymenoptera, Diptera, and Acari. Lesion nematodes of the genus Pratylenchus were commonly associated with the roots of torpedograss. None of the organisms collected were torpedograss specialists. Although classical biological control of torpedograss is feasible based on the extent of the infestation, economic losses, resistance to conventional controls, and the report of a potentially host specific natural enemy in India, the botanical position of this grass weed will require a formal risk assessment before proceeding with a classical biological control program. (author) [Spanish] La conota, Panicum repens L., es una especie foranea de pasto que produce rizomas que ha convertido en ser una maleza invasora de ambientes terrestres, pantanosos y acuaticos en regiones tropicales y subtropicales en todo el mundo. Hasta hace un tiempo reciente, las estrategias para controlar conota en los EEUU eran enfocadas casi exclusivamente en los metodos mecanicos y quimicos, solos o en combinacion, con resultados variables. Un muestreo de los artropodos y nematodos asociados corrientemente con esta planta en el Lago de Okeechobee, Florida, fue realizado como parte de un estudio de factibilidad para determinar si conota es una candidata apropiada para un programa de control biologico clasico. En general, especimenes de aproximadamente unos 4,000 artropodos y unos 400 nematodos fueron recolectados. Muestras recolectadas pasando una red sobre vegetacion mezclada, cortando la vegetacion y tomando centros del suelo fueron dominados por representantes de artropodos de los ordenes de Hemiptera, Hymenoptera, Diptera, y Acari. Nematodos en el genero Pratylenchus, que causan lesiones sobre tejido, fueron asociados regularmente con las raices de conota. Ninguno de los organismos recolectados eran especialistas sobre conota. Aunque el control biologico clasico de la conota es factible basado sobre la magnitud de la infestacion, las perdidas economicas, la resistencia hacia los metodos de control convencionales y el informe en la India de un posible enemigo natural especifico a esta planta, la posicion botanica de este pasto maleza requiere una evaluacion de riesgo economico formal antes de continuar con un programa de control biologico clasico. (author)

Cuda, J.P.; Dunford, J.C.; Leavengood, J.M. Jr. [University of Florida, Entomology and Nematology Department, Gainesville, FL 32611-0620 (United States)

2007-03-15

360

Influence of soil tillage and erosion on the dispersion of glyphosate and aminomethylphosphonic acid in agricultural soils  

NASA Astrophysics Data System (ADS)

Erosion processes can strongly influence the dissipation of glyphosate and aminomethylphosphonic acid applied with Roundup Max in agricultural soils; in addition, the soil structure state shortly before erosive precipitations fall can be a key parameter for the distribution of glyphosate and its metabolite. Field rain simulation experiments showed that severe erosion processes immediately after application of Roundup Max can lead to serious unexpected glyphosate loss even in soils with a high presumed adsorption like the Cambisols, if their structure is unfavourable. In one of the no-tillage-plot of the Cambisol, up to 47% of the applied glyphosate amount was dissipated with surface run-off. Moreover, at the Chernozem site with high erosion risk and lower adsorption potential, glyphosate could be found in collected percolation water transported far outside the 2x2 m experimental plots. Traces of glyphosate were found also outside the treated agricultural fields.

Todorovic, Gorana Rampazzo; Rampazzo, Nicola; Mentler, Axel; Blum, Winfried E. H.; Eder, Alexander; Strauss, Peter

2014-03-01

361

Optimization of conditions for high-performance size-exclusion chromatography of different soil humic acids.  

PubMed

A method of high-performance size-exclusion chromatography (HPSEC) for a wide variety of soil humic acids (HAs) was developed. Two types of soil HAs (Cambisol and Andosol HAs), which have substantially different chemical properties, showed different effects of salt and organic solvent concentrations in the eluent on chromatograms. A Shodex OHpak SB-805 HQ column with 10 mM sodium phosphate buffer (pH 7.0) containing 25% of acetonitrile (v/v) was found to be applicable for different HAs, and showed high reproducibility and recovery (87.0 - 94.5%). The Cambisol HA was fractionated into five fractions using an ultrafiltration with different molecular-weight cut-offs. The order of the molecular weights of the five fractions calculated from the HPSEC analysis corresponded to that defined by ultrafiltration. This supported the reliability of the method. PMID:18469466

Asakawa, Daichi; Kiyota, Takuro; Yanagi, Yukiko; Fujitake, Nobuhide

2008-05-01

362

Atypical early-time infiltration into a structured soil near field capacity: The dynamic interplay between sorptivity, hydrophobicity, and air encapsulation  

Microsoft Academic Search

Accurate measurement of infiltration attributes for the soil's surface layer is critical for understanding the dynamics of soil water in response to rainfall or irrigation. This study used four large lysimeters to measure the early-time infiltration behaviour of a structured, well-drained, silt loam Dystric Cambisol. For each lysimeter there were four separate infiltration experiments, with a 480-mm-diameter tension infiltrometer used

S. Carrick; G. Buchan; P. Almond; N. Smith

2011-01-01

363

Use of dairy-industry sludge as fertiliser for grasslands in northwest Spain: heavy metal levels in the soil and plants  

Microsoft Academic Search

The suitability of dairy-plant sludge for fertilisation of a Cambisolic soil was investigated in northwest Spain. Soil properties (pH, electrical conductivity, organic matter content, NO3?, P, Ca, Mg, Na, K and Al) and soil and plant tissue heavy metal contents (Hg, Pb, Cd, Cu, Zn, Ni and Cr) were determined in 12 grassland plots fertilised over a 14-year period with

M. E L髉ez-Mosquera; C Moir髇; E Carral

2000-01-01

364

Effect of High Nickel and Chromium Background Levels in Serpentine Soil on Their Accumulation in Organs of a Perennial Plant  

Microsoft Academic Search

The effect of high concentrations of nickel (Ni) and chromium (Cr) in alkaline serpentine Fluvisol (FL 1) on their uptake by grapevine as a perennial plant was compared to their accumulation on alkaline Fluvisol (FL 2) and an acid Cambisol (CM). The FL 1 revealed high pseudo total Ni (9001737爉g爇g) and Cr (263775爉g爇g) concentrations, whereas those in FL 2 and

Vlado Licina; Mirjana Kresovic; J鰎g Rinklebe

2010-01-01

365

Soil Carbon and Nitrogen, and Characteristics of Soil Active Layer in Siberian Permafrost Region  

Microsoft Academic Search

\\u000a Permafrost region of Siberia is mostly covered with larch forest or forest tundra. The permafrost-affected soils were generally\\u000a classified as Cambisols (moderately developed soils) on plain topography and Leptosols (shallow and high gravel content soils)\\u000a in mountainous topography (FAO 1993). The latest revision of soil classification systems of both USDA and FAO adopted permafrost\\u000a as a diagnostic horizon, and created

Y. Matsuura; M. Hirobe

366

Microbial populations in heated soils inoculated with cyanobacteria  

Microsoft Academic Search

The composition of soil microbiota in four heated (350??癈, 1?h) soils (one Ortic Podsol over sandstone and three Humic Cambisol\\u000a over granite, schist or limestone) inoculated (1.5??g chlorophyll?a g1 soil or 3.0??g chlorophyll?a g1 soil) with cyanobacteria (Oscillatoria PCC9014, Nostoc PCC9025, Nostoc PCC9104, Scytonema CCC9801, and a mixture of the four) was studied by cultural methods. The aims of the

M. J. Acea; N. Diz; A. Prieto-Fern醤dez

2001-01-01

367

Rhizosphere soil microbial community structure and microbial activity in set-aside and intensively managed arable land  

Microsoft Academic Search

The effects of plant species which frequently occur in set-aside arable land on rhizosphere soil properties were assessed\\u000a and compared to rhizosphere soil of Secale cereale (Rye) grown on an intensively managed arable soil (sandy Cambisol, Saxony, NE-Germany). On a 6爕ear old set-aside arable\\u000a land rhizosphere soil samples were taken under Agropyron repens, Cirsium arvense and Rumex acetosa, the most

Ute Hamer; Franz Makeschin

2009-01-01

368

Pedogenesis and nickel biogeochemistry in a typical Albanian ultramafic toposequence.  

PubMed

This study aimed at relating the variability of Ni biogeochemistry along the ultramafic toposequence to pedogenesis and soil mineralogy. Hypereutric Cambisols dominate upslope; Cambic Vertisols and Fluvic Cambisols occur downslope. The soil mineralogy showed abundance of primary serpentine all over the sequence. It is predominant upslope but secondary smectites dominate in the Vertisols. Free Fe-oxides are abundant in all soils but slightly more abundant in the upslope soils. Whereas serpentines hold Ni in a similar and restricted range in every soil (approx. 0.3%), Ni contents in smectites may vary a lot and Mg-rich and Al-poor smectites in the Vertisol could hold up to 4.9% Ni. Ni was probably adsorbed onto amorphous Fe-oxides and was also exchangeable in secondary smectites. High availability of Ni in soils was confirmed by DTPA extractions. However, it varied significantly along the toposequence, being higher in upslope soils, where Ni-bearing amorphous Fe-oxides were abundant and total organic carbon higher and sensibly lower downslope on the Vertisols: NiDTPA varied from 285爉g爇g(-1) in the surface of soil I (upslope) to 95.9爉g爇g(-1) in the surface of Fluvic Cambisols. Concentration of Ni in Alyssum murale shoots varied from 0.7% (Hypereutric Cambisols) to 1.4% (Hypereutric Vertisol). Amazingly, Ni uptake by A. murale was not correlated to NiDTPA, suggesting the existence of specific edaphic conditions that affect the ecophysiology of A. murale upslope. PMID:24718927

Bani, Aida; Echevarria, Guillaume; Montarg鑣-Pelletier, Emmanuelle; Gjoka, Fran; Sul鏴, Sulejman; Morel, Jean Louis

2014-07-01

369

Organic matter changes immediately after a wildfire in an atlantic forest soil and comparison with laboratory soil heating  

Microsoft Academic Search

The quantity, chemical composition and mineralization kinetics of the organic matter of an acid Humic Cambisol, developed over granite, under Pinus sylvestris L. were determined in 05 and 510 cm samples collected immediately after a high-intensity wildfire, and compared with those of an unaffected site nearby. Organic matter was characterized by different chemical fractionation methods, and the C mineralization was

I. Fern醤dez; A. Cabaneiro; T. Carballas

1997-01-01

370

Effects of methamidophos on the community structure, antagonism towards Rhizoctonia solani, and phlD diversity of soil Pseudomonas  

Microsoft Academic Search

A microcosm incubation study using an aquic brown soil from northeast China (a Cambisol in the UN Food and Agriculture Organization FAO Soil Taxonomy) was conducted to examine the effects of different concentrations (0, 50, 150, and 250 mg kg) of methamidophos (O,S-dimethyl phosphoramidothioato) on Pseudomonas, one of the most important gram-negative bacteria in soil. Amplified ribosomal DNA restriction analysis

Minna Wu; Xinyu Li; Huiwen Zhang; Yinghui Cai; Chenggang Zhang

2010-01-01

371

Changes in cadmium mobility during composting and after soil application  

SciTech Connect

The effect of twelve weeks of composting on the mobility and bioavailability of cadmium in six composts containing sewage sludge, wood chips and grass was studied, along with the cadmium immobilization capacity of compost. Two different soils were used and Cd accumulation measured in above-ground oat biomass (Avena sativa L.). Increasing pH appears to be an important cause of the observed decreases in available cadmium through the composting process. A pot experiment was performed with two different amounts of compost (9.6 and 28.8 g per kg of soil) added into Fluvisol with total Cd 0.255 mg kg{sup -1}, and contaminated Cambisol with total Cd 6.16 mg kg{sup -1}. Decrease of extractable Cd (0.01 mol l{sup -1} CaCl{sub 2}) was found in both soils after compost application. The higher amount of compost immobilized an exchangeable portion of Cd (0.11 mol l{sup -1} CH{sub 3}COOH extractable) in contaminated Cambisol unlike in light Fluvisol. The addition of a low amount of compost decreased the content of Cd in associated above-ground oat biomass grown in both soils, while a high amount of compost decreased the Cd content in oats only in the Cambisol.

Hanc, Ales [Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, 165 21 Prague (Czech Republic)], E-mail: hanc@af.czu.cz; Tlustos, Pavel; Szakova, Jirina; Habart, Jan [Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, 165 21 Prague (Czech Republic)

2009-08-15

372

Use of Physio-Hydrological Units for SMOS Validation at the Valencia Anchor Station Study Area  

NASA Astrophysics Data System (ADS)

The SMOS space mission will soil moisture over the continents and ocean surface salinity with the sufficient resolution to be used in global climate change studies. With the aim of validating SMOS land data and products at the Valencia Anchor Station site (VAS) in a Mediterranean Ecosystem area of Spain, we have designed a sample methodology using a subdivision of the landscape in environmental units related to the spatial variability of soil moisture (Mill醤-Scheiding, 2006; Lopez-Baeza, et al. 2008). These physio-hydrological units are heterogeneously structured entities which present a certain degree of internal uniformity of hydrological parameters. The units are delimited by integrating areas with the same physio-morphology, soil type, vegetation, geology and topography (Flugel, et al 2003; Mill醤-Scheiding et al, 2007). Each of these units presented over the same pedological characteristics, vegetation cover, and landscape position should have a certain degree of internal uniformity in its hydrological parameters and therefore similar soil moisture (SM). The main assumption for each unit is that the dynamical variation of the hydrological parameters within one unit should be minimum compared to the dynamics of another unit. This methodology will hopefully provide an effective sampling design consisting of a reduced number of measuring points, sparsely distributed over the area, or alternatively, using SM validation networks where each sampling point is located where it is representative of the mean soil moisture of a complete unit area. The Experimental Plan for the SMOS Validation Rehearsal Campaign at the VAS area of April-May 2008 used this environmental subdivision in the selection and sampling of over 21.000 soil moisture points in a control area of 10 x 10 km2. The ground measurements were carried out during 4 nights corresponding to a drying out period of the soil. The sampling consisted of 700 plots with 4 volumetric SM cylinders and 7 Delta-T Theta Probe measurements (with 3 repetitions each), covering the whole area. This experimental campaign permits the characterization of the soil moisture distribution within each physio-hydrological unit and results in a soil moisture map of the VAS site. All of it used for the validation of the aircraft observations done throughout the campaign. The ground measurement results obtained indicate that soil properties and vegetation cover are the parameters of the physio-hydrological units that most influence the moisture of the soil. This relationship will permit a more simple delimitation of the physio-hydrological Units and a reduction of the number of sample points for the calibration/validation of SMOS products. References: Lopez-Baeza, E., R. Acosta, M.C. Antolin, F. Belda, A. Cano, E. Carbo, M. Crapeau, A. Fidalgo S. Juglea, Y. Kerr, B. Martinez, C. Millan-Scheiding, D. Rodriguez, K. Saleh, J. Sanchis, J.-P. Wigneron(10), Other Contributors: J.E. Balling, C. Domenech, EOLAB, A.G. Ferreira J. Ferrer, J. Grant, J. Marco C. Narbon, B. Navascues, OCEANSNELL, E. Rodriguez-Camino, N. Skou, S. S鴅j鎟g, P. Soriano, J. Tamayo, S. Tauriainen, E. Torre G. Torregrosa, A. Velazquez Blazquez, S. Vidal (2008): Validation of SMOS Products over Mediterranean Ecosystem Vegetation at the Valencia Anchor Station Reference Area. SMOS Cal/Val AO I.D. no. 3252. Experimental Plan SMOS Validation Rehearsal Campaign. University of Valencia, April 2008 Millan-Scheiding, C. (2006): Aproximaci髇 a la Humedad del Suelo en el Altiplano de Requena-Utiel. Preparaci髇 para la Campa馻 de Cal/Val de la Misi髇 Espacial SMOS. Trabajo de Investigaci髇 de III Ciclo. Universidad de Valencia. Mill醤-Scheiding, C., C. Antol韓, A. Cano, E. L髉ez-Baeza (2007): Uso de Unidades Fisio-Hidrol骻icas en la Monitorizaci髇 de la Humedad del Suelo con SMOS. III Simposio Nacional sobre el Control de la Degradaci髇 de Suelos y la Desertificaci髇. Costa Calma (P醞ara), Fuerteventura, 16 al 20 de Septiembre 2007

Mill醤-Scheiding, C.; Antol韓, C.; Marco, J.; Soriano, M. P.; Torre, E.; Requena, F.; Carb, E.; Cano, A.; Lopez-Baeza, E.

2009-04-01

373

Impact of payments for environmental services and protected areas on local livelihoods and forest conservation in northern Cambodia  

PubMed Central

The potential impacts of payments for environmental services (PES) and protected areas (PAs) on environmental outcomes and local livelihoods in developing countries are contentious and have been widely debated. The available evidence is sparse, with few rigorous evaluations of the environmental and social impacts of PAs and particularly of PES. We measured the impacts on forests and human well-being of three different PES programs instituted within two PAs in northern Cambodia, using a panel of intervention villages and matched controls. Both PES and PAs delivered additional environmental outcomes relative to the counterfactual: reducing deforestation rates significantly relative to controls. PAs increased security of access to land and forest resources for local households, benefiting forest resource users but restricting households ability to expand and diversify their agriculture. The impacts of PES on household well-being were related to the magnitude of the payments provided. The two higher paying market-linked PES programs had significant positive impacts, whereas a lower paying program that targeted biodiversity protection had no detectable effect on livelihoods, despite its positive environmental outcomes. Households that signed up for the higher paying PES programs, however, typically needed more capital assets; hence, they were less poor and more food secure than other villagers. Therefore, whereas the impacts of PAs on household well-being were limited overall and varied between livelihood strategies, the PES programs had significant positive impacts on livelihoods for those that could afford to participate. Our results are consistent with theories that PES, when designed appropriately, can be a powerful new tool for delivering conservation goals whilst benefiting local people. El Impacto de los Pagos por Servicios Ambientales y 羠eas Protegidas sobre la Subsistencia Local y la Conservaci髇 del Bosque en el Norte de Camboya Resumen Los impactos potenciales de los pagos por servicios ambientales (PSA) y 醨eas protegidas (APs) sobre los resultados ambientales y las subsistencias locales en los pa韘es en desarrollo son pol閙icos y se han debatido ampliamente. La evidencia disponible es escasa; ha habido pocas evaluaciones rigurosas de los impactos ambientales y sociales de las APs y particularmente los PSA. Medimos el impacto sobre los bosques y el bienestar humano en tres diferentes programas de PSA que se llevan a cabo dentro de dos APs en el norte de Camboya usando un panel de aldeas de intervenci髇 y controles emparejados. Tanto los PSA como las APs brindaron resultados ambientales adicionales en relaci髇 a los contraf醕ticos, esto quiere decir que redujeron las tasas de deforestaci髇 significativamente en relaci髇 a los controles. Las 醨eas protegidas incrementaron el acceso seguro a los recursos del suelo y el bosque para las viviendas locales, beneficiando a los usuarios de los recursos del bosque pero restringiendo la habilidad de las viviendas para expandirse y diversificar su agricultura. Los impactos de los pagos por servicios ambientales sobre el bienestar de las viviendas estuvieron relacionados con la magnitud de los pagos proporcionados. Los dos programas de PSA de mayor paga y con conexi髇 al mercado tuvieron impactos positivos significativos, mientras que un programa de menor paga con el objetivo de proteger a la biodiversidad no tuvo un efecto detectable sobre las viviendas, a pesar de sus resultados ambientales positivos. Las viviendas que se inscribieron a los programas de PSA con mayor paga, sin embargo, necesitaban t韕icamente m醩 bienes capitales, por lo que eran menos pobres y ten韆n mayor seguridad alimentaria que otros aldeanos. Por esto, mientras los impactos de las APs sobre el bienestar de las viviendas fueron limitados en general y variaron dependiendo de las estrategias de subsistencia, los programas de PSA tuvieron impactos positivos significativos sobre las viviendas para aquellos que pod韆n co

Clements, Tom; Milner-Gulland, E J

2015-01-01

374

AN罫ISIS BIOL覩ICO Y FINANCIERO DE UN ENSAYO DE FERTILIZACI覰 EN PLANTACIONES DE Eucalyptus urophylla ESTABLECIDAS EN SUELOS ARENOSOS DEL ORIENTE DE VENEZUELA Biological and financial analysis of a fertilization trial in Eucalyptus urophylla plantations established on sandy soils in eastern Venezuela  

Microsoft Academic Search

A biological and financial analysis was carried out on a fertili- zation trial of Eucalyptus urophylla. The trial was establis- hed on the Venezuela's Eastern Savannas and consisted of six treatments arranged in a random blocks design. Each treatment, except treatment 1 (T1-check-) that was not fertilized, received the same mix of fertilizers, but on a different sequence during the

R. Gonz醠ez; M. Jerez; O. Carrero G; M. Plonczak; F. Shutte

2005-01-01

375

Changes in tree species richness, stand structure and soil properties in a successional chronosequence in northern Chilo Island, Chile Cambios en la riqueza de especies arb髍eas, estructura de rodales y propiedades del suelo en una cronosecuencia sucesional en el norte de la Isla de Chilo, Chile  

Microsoft Academic Search

We studied a chronosequence of forest fragments in northern Chilo Island, southern Chile, with the aim of assessing ecosystem recovery patterns following anthropogenic disturbance. Hypotheses regarding successional trends in tree species richness, the replacement of shade-intolerant by shade-tolerant species, and the impact of disturbance on soil properties were evaluated in nine forest stands. The chronosequence encompassed two early (minimum stand

JUAN C. ARAVENA; MART蚇 R. CARMONA; CECILIA A. P蒖EZ; JUAN J. ARMESTO

376

Spatial Predictions of Cover Attributes of Rangeland Ecosystems Using Regression Kriging and Remote Sensing  

E-print Network

rangeland attributes (percent cover of shrubs, bare ground, and cheatgrass [Bromus tectorum L cobertura de arbustos, suelo desnudo y cheatgrass [Bromus tectorum L.]) en un a麓rea de estudio en el sur de

377

Investigacin Centro de Investigacin y de Estudios Avanzados del Instituto Politcnico Nacional  

E-print Network

moleculares microbianos en suelos. Ana Carmela Ramos Valdivia Biotecnolog铆a del metabolismo secundario y la y de plantas de especies americanas y su producci贸n a nivel de biorreactor. Graciano Calva Calva

378

Capitulo 6 Viscoelasticidad  

E-print Network

comportamientos fundamentales en los pol磇meros, los suelos e incluso el hormig磑n. Dentro de la complejidad de fundamental que juega la temperatura como modula- dor de la respuesta, especialmente en los pol磇meros. Estos

Romero, Ignacio

379

Efecto de la dieta artificial MP sobre la emergencia y relacion de sexos de Phymastichus coffea (Hymenoptera:Eulophidae) mantenido sobre su hueped, Hypothenemus hampei (Coleoptera: Scloytidae)a traves de generaciones contin  

Technology Transfer Automated Retrieval System (TEKTRAN)

Phymastichus coffea La Salle (Hymenoptera: Eulophidae) is an endoparasitoid that attacks the adult coffee berry borer, Hypothenemus hampei Ferrari (Coleoptera: Scolytidae). The MP diet developed by Portilla and Streett is the only reported diet that allows cultures of P. coffea to develop and repr...

380

Informe Anual a la Naci髇 sobre el Estado del C醤cer entre 1975-2003 con una secci髇 especial sobre el estado del c醤cer en la poblaci髇 hispana o latina de los Estados Unidos: preguntas y respuestas  

Cancer.gov

La tendencia a largo plazo de las tasas de mortalidad por c醤cer en general, que han ido bajando desde principios de los a駉s noventa, se mantuvieron hasta 2003 para todas las razas y para ambos sexos combinados.

381

Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Programas de Proteccin Contra Incendios Forestales: Una Visin Global Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Progra  

E-print Network

(medida a trav閟 del tama駉 promedio de los incendios) se ha mantenido constante, pero los presupuestos p鷅lico por su parte, se ha visto enfrentado a dif韈iles momentos, donde la asignaci髇 de presupuestos se las unidades de combate terrestre, mediante un esquema de costos de acceso, donde un m髒il se desplaza

Standiford, Richard B.

382

Ester骾des anabolizantes: mecanismos de a玢o e efeitos sobre o sistema cardiovascular Anabolic steroids: action mechanisms and effects on the cardiovascular system Esteroides anab髄icos: mecanismos de acci髇 y efecto sobre el sistema cardiovascular  

Microsoft Academic Search

Anabolic androgenic steroids are ergogenic aids commonly used by athletes in search of better performances. However, the use of these substances by individuals who are not athletes with aesthetic aims is becoming an increasing problem in fitness and sport centers. This behavior has favored the indiscriminate and abusive use of these steroids, exposing their users to health risks. Anabolic steroids

Fernando Lima Rocha; Fernanda Roberta Roque; Edilamar Menezes de Oliveira

383

Informe Anual a la Naci髇 sobre el Estado del C醤cer, 1975-2008, con informaci髇 sobre los c醤ceres asociados al sobrepeso y a la falta de actividad f韘ica adecuada: Preguntas y respuestas  

Cancer.gov

Los 韓dices generales de mortalidad por c醤cer han seguido disminuyendo desde principios de los noventa entre hombres, mujeres y ni駉s. Los 韓dices de mortalidad disminuyeron en promedio 1,6% por a駉 entre 2004 y 2008.

384

ESTUDIO DE LA VALIDEZ INTERNA Y EXTERNA DE UN CUESTIONARIO SOBRE CONDUCTAS PROBLEM罷ICAS PARA LA CONVIVENCIA SEG贜 EL PROFESOR  

Microsoft Academic Search

A poll based on the analyses of discipline reports was made up. These reports are given by teachers of two public high schools in Almeria. Starting from this material, a questionnaire including the following categories was elaborated: undisciplined, antisocial, bullying and disruptive behaviour. The objective of this study is to analyse the validity and reliability of such instrument for the

J. Peralta; M. D. S醤chez; M. V. Trianes

2003-01-01

385

Hay una nueva ley1 en Tennessee sobre el uso de detencin y aislamiento en escuelas pblicas, la cual tomo  

E-print Network

hijo(a) tiene problemas con su conducta, el equipo de IEP debe de escribir un plan individualizado de apoyo a conducta (BIP), basado en una evaluaci贸n de conducta funcional (FBA). Restricci贸n o reclusi贸n el uso de Restricci贸n y Reclusi贸n en la Educaci贸n Especial y Apoyos Positivos de Conducta (http://www

Cui, Yan

386

縌u traen las personas al juego? Experimentos de campo sobre la cooperaci髇 en los recursos de uso com鷑  

Microsoft Academic Search

El estudio de la acci髇 colectiva requiere la comprensi髇 de los incentivos individuales y de las restricciones institucionales que gu韆n a las personas en la decisi髇 de cooperar o no, en el grupo que enfrenta este dilema. El uso de ecosistemas locales por parte de grupos de individuos es s髄o un ejemplo en el que la extracci髇 individual incrementa el

C醨denas Juan Camilo; Elinor Ostrom

2004-01-01

387

UN ESTUDIO SOBRE CONTAMINACI覰 DE ACU虵EROS ASOCIADA A LAS ACTIVIDADES AGR虲OLAS - CUENCA DEL ALTO TIET, ESTADO DE S肙 PAULO, BRASIL  

Microsoft Academic Search

The application of fertilizers and pesticides results in high residual concentrations of heavy metals in soils, as well as in accumulation of toxic substances in crops and natural water. Arsenic may accumulate in soil through the use of pesticides and application of synthetic fertilizers. The mobility of As in soils depends on several factors including redox potential, soil mineralogy, pH

Valquiria Campos; Raphael Hypolito; D閎orah In阺 Teixeira F醰aro

388

AN罫ISE ESTRATIGR罠ICA DO ALBIANO-TURONIANO DA BACIA DE PERNAMBUCO: CONSIDERA钦ES SOBRE A PALEOGEOGRAFIA E GERA敲O DE HIDROCARBONETOS  

Microsoft Academic Search

M.E.T.R. Tom, M. de Lima Filho, V.H. Neumann - Stratigraphy analysis of the Albian-Turonian of the Pernambuco Basin: considerations about paleogeography and hydrocarbon generation. More and more, the exploration of the petroleum in Brazil is driven for deep sea areas, where the presence of thick Cretaceous limestone layers of potential interest for petroliferous reservoirs of this age, mainly for the

Maria Em韑ia; Travassos Rios TOM; M醨io Ferreira de LIMA; Virg韓io Henrique de Miranda; Lopes NEUMANN; A Forma玢o Estiva

389

Los nuevos di醠ogos sobre paradigmas y la investigaci髇 cualitativa. Un compromiso en la relaci髇 universidad-sociedad  

Microsoft Academic Search

This work addresses a particular society-university link: the complex methodology\\/social problems\\/public policy and a social justice change possibility. In this link, re- sults derived from academic debate around qualitative and quantitative methodologies impacts public policy and local, regional, national and planetary resources distribution. It is proposed here that dialogue and colla- boration is needed between paradigms and academic communities, and

Norman K. Denzin

390

Efecto de la meniscectom韆 acromioclavicular sobre el dolor residual en la luxaci髇 acromioclavicular grado III o mayor  

Microsoft Academic Search

In order to compare the prevalence of post-surgical pain in patients who undergone a meniscal extraction during coracoclavicular repair with those who didn't have it after a grade III or worse acromio-clavicular joint dislocation, we did make a transverse cohort study on 25 patients between January 2005 and April 2007 at Cl韓ica Universitaria El Bosque. Fifteen patients were menisectomized and

Juan David Castillo Mej韆; Juan Manuel Herrera Arbel醗z; Oscar Eduardo Reyes; Juan Carlos L髉ez; Carlos Leal Contreras; Residente de Ortopedia; Juan Manuel Herrera; Postgrado de Ortopedia

2009-01-01

391

EFECTO DEL LIPOPOLISAC罵IDO SOBRE EL N贛ERO DE HEMOCITOS Y LA PRODUCCI覰 DE 覺IDO N蚑RICO EN EL CAMAR覰 BLANCO (Litopenaeus schmitti)  

Microsoft Academic Search

Aquaculture of penaeid crustaceans is an economically important activity, limited by endemic and epidemic infectious diseases in different parts of the world. Due this, research about defense mechanisms in shrimp has become a priority with the aim of the understanding of immune stimulation process that increases the resistance to pathogens. In this work the toxicity of the endotoxic lipopolysacharide, coming

J. Marrero; G. Espinosa; M. E. Alonso; Y. Borrell; T. Rodr韌uez; M. Beatriz

392

Producci髇 masiva automatizada de la broca del caf Hypothenemus hampei Ferrari (Cole髉tera: Scolytidae) y de sus parasitoides sobre dietas artificiales  

Technology Transfer Automated Retrieval System (TEKTRAN)

This article reviews the current state of knowledge concerning the mass rearing system of the coffee berry borer, cbb, Hypothenemus hampei (Ferrari) (Coleoptera: Scolytidae), and its African parasitoids: the ectoparasitoids Cephalonomia stephanoderis (Betrem) and Prorops nasuta ((Waterston) (Hymenop...

393

Teor砺璦s de primer y segundo orden sobre el potencial de ciertas figuras de equilibrio de cuerpos celestes  

NASA Astrophysics Data System (ADS)

Uno de los problemas que aborda la Mec醤ica Celeste es la determinaci髇 de las figuras de equilibrio de los cuerpos celestes. Para investigar su soluci髇 mediante m閠odos directos, se precisa evaluar el potencial generado por su autogravitaci髇, el generado por su fuerza centr砺璮uga y el generado por la fuerza de atracci髇 entre los cuerpos. Los m閠odos cl醩icos de Finlay y Kopal que afrontan estos problemas, para determinar el potencial autogravitatorio en las configuraciones de equilibrio, emplean desarrollos en serie de los potenciales interior y exterior del potencial autogravitatorio. Estos m閠odos incurren en el error de suponer la convergencia en capas donde resulta cuestionable dicha convergencia para estos desarrollos en serie. En este trabajo se han elaborado unos algoritmos que contemplan toda la casu&stica y que permiten una manipulaci髇 efic iente del producto de polinomios de Legendre, del producto de funciones asociada s de Legendre y del producto de arm髇icos esf閞icos como combinaci髈n lineal de ellos mismos, respectivamente. Se han obtenido, para primer y segundo orden en las amplitudes, los desarrollos correctos para los potencial es interior y exterior del potencial autogravitatorio para configuraciones de equilibrio aisladas, y , en primer orden de amplitudes, los mismos potenciales para los sistemas binarios pr髕imos. Se ha elaborado un m閠odo anal韙ico, en primer orden respecto de las amplitudes, para la determinaci髇 del potencial de marea en sistemas binarios pr髕imos en el cual se manifiesta la forma de la componente secundaria del sistema

Gumbau, Manuel Forner

2010-11-01

394

La actividad -galactosidasa como 韓dice de control de calidad de la muestra de sangre seca recogida sobre papel  

Microsoft Academic Search

The lysosomal storage diseases are inborn errors of the metabolism originated by the hereditary deficiency of lysosomal hydrolases, which cause a progressive accumulation of complex molecules that cannot be degraded. Besides the molecular diagnosis, the definitive diagnosis of these pathologies consists of the determination of specific enzymatic activities in leukocytes, fibroblasts or other types of cells. These methods are complex

Luis Manuel Jim閚ez Jim閚ez; Joaqu韓 Bobillo Lobato; Alejandro Caro P閞ez; Pilar Dur醤 Parejo

2011-01-01

395

LOCALIZA敲O, CRIA敲O E MANUTEN敲O DAS UNIDADES DE CONSERVA敲O (UC) SOBRE MAQUETE DO ESTADO DO RIO DE JANEIRO  

Microsoft Academic Search

The present work has the aim of presenting, on model, the location of the Units of Conservation (UC) of the State of Rio de Janeiro. It is also a study to observe the legislation regarding creation of the respective Units, consider- ing the importance of the areas around those Units of Conservation, being this surroundings entirely linked to the mapped

Camila Fernanda; Nunes Borges; Marcelus Cezar; Fernandes Silva; Cl醬dio Augusto; Barreto Saunders

396

Conocimientos, actitudes y creencias de los profesionales de atenci髇 primaria sobre la vacuna y la vacunaci髇 antigripal  

Microsoft Academic Search

Background and aimAlthough influenza vaccination is recommended in primary care (PC) professionals, coverage is low. The aim of this study was to determine the reasons for non-vaccination among PC professionals, identify their level of knowledge about the vaccine and vaccination, and to provide material for use in clinical meetings directed at promoting influenza vaccination among this group.

A. Pe馻; M. Mart韓ez; L. Urbiztondo

2005-01-01

397

Creencias y conocimientos de un grupo de m閐icos sobre el manejo de la alimentaci髇 del ni駉 con diarrea aguda  

Microsoft Academic Search

Objective. To identify the beliefs and knowledge of a group of rural physicians on the dietary management of children under five years of age, with acute diarrhea. Physicians' die- tary management was compared with that recommended by the World Health Organization. Material and Methods. A cognitive anthropology study was carried out from July

Martha Corral-Terrazas; Homero Mart韓ez; Samuel Flores-Huerta; Ma Ximena Duque-L; Bernardo Turnbull; Margarita Levario-Carrillo

2002-01-01

398

Notas sobre la biolog韆 y dieta del toyo vieja (Mustelus lunulatus) en la zona central de pesca del Pac韋ico colombiano  

Microsoft Academic Search

Specimens of Mustelus lunulatus captured in the trawling fishery of a shrimp vessel in the central zone in the Pacific Ocean off Colombia were analyzed. The size, weight, growth pattern, sexual proportion, stages of maturity and diet were determined. The captured specimens were between 50 and 125 cm, the sexual proportion was 1:1, and the isometric-type length-weight relationship was described

Andr閟 F Navia; Alan Giraldo; Paola A Mej韆-Falla

2006-01-01

399

EXPLORACIONES SOBRE EL SOPORTE MULTI-AGENTE BDI EN EL PROCESO DE DESCUBRIMIENTO DE CONOCIMIENTO EN BASES DE DATOS  

E-print Network

agentes especializados en algunos pasos (preprocesamiento, miner磇a de datos y evaluaci磑n de pa- trones construyen sus respectivos modelos de miner磇a de datos, que env磇an al Coordinador para que 磂ste seleccione y reporte al ganador. Las tareas de miner磇a de datos que el MAS tiene encomendadas son la

Guerra Hern醤dez, Alejandro

400

Liv and Lucky in Liverland. . . Color Us Healthy! A Workbook about Your Liver = Un Cuaderno de trabajo sobre tu higado.  

ERIC Educational Resources Information Center

This workbook/coloring book, on the liver and good health is designed for primary school students. The 21 line drawings illustrate different aspects of liver function, maintaining a healthy liver, and preventing liver disease. Each page is captioned in both English and Spanish. (ND)

1995

401

EFEITO DA 蒔OCA DE SEMEADURA SOBRE A QUALIDADE FISIOL覩ICA 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; JOS DE BARROS; FRAN茿 NETO; ADEMIR ASSIS HENNING; FRANCISCO CARLOS KRZYZANOWSKI; NORIVAL TIAGO CABRAL; M罵CIO C. MENDES

402

Efecto de la contaminaci髇 ambiental sobre las consultas por infecciones respiratorias en ni駉s de la Ciudad de M閤ico  

Microsoft Academic Search

Objective. To model the variability of medical visits by chil- dren for respiratory reasons as a consequence of the daily changes in environmental pollution observed in the emer- gency and family medicine departments of a hospital of the Instituto Mexicano del Seguro Social located in the south- west of Mexico City during 1993. Materials and meth- ods. The correlation between

MARTHA MAR虯 T蒐LES-ROJO; ISABELLE ROMIEU; MARCO POLO-PE袮; SILVIA RUIZ-VELASCO; FERNANDO MENESES-GONZ罫EZ; MAURICIO HERN罭DEZ-AVILA

1997-01-01

403

INCIDENCIA DEL TAMA袿 SOBRE EL COMPORTAMIENTO FINANCIERO DE LA EMPRESA. UN AN罫ISIS EMP蚏ICO CON PYMES GALLEGAS1  

Microsoft Academic Search

The present work faces with the financial behaviour of firms according to their size. In Spain, there are several important papers which deal with structural characteristics of the finan- cial mixture in small and medium size firms, and the differences with bigger organizations. When we review these works in order to know patterns, we can find a set of problems

LUC虯 BOEDO VILABELLA; RAM覰 CALO SILVOSA

404

An醠isis comparado sobre la crisis y los rescates financieros de M閤ico (1995) y los Estados Unidos (2008)  

Microsoft Academic Search

The frequency of financial crises over recent decades makes an in-depth study of the phenomenon imperative. This should involve particular attention to those points the different crises have in common, so as to draw lessons that can be used by financial authorities, regulators and the actual participants in the financial system. The causes of the crisis and the efficacy (or

Carlos Bazdresch Parada; Ariel Buira; Guillermo Calvo; Everardo Elizondo Almaguer; Gerardo Esquivel Hern醤dez; Eduardo Fern醤dez; Fausto Hern醤dez Trillo; Arist骲ulo de Juan; Claudio M. Loser; Carmen M. Reinhart; Liliana Rojas Su醨ez; Jes鷖 Silva Herzog Flores; Sidney Weintraub; John Williamson

2010-01-01

405

Carlos Menem y Fernando Collor de Mello 緼rquitectos del Mercosur? Algunas reflexiones sobre calidad democr醫ica e integraci髇 regional  

Microsoft Academic Search

El 21 de Marzo de 1991, los presidentes y ministros de relaciones exteriores de la Argentina, Brasil, Paraguay y Uruguay suscribieron el Tratado de Asunci髇 para la constituci髇 de un mercado com鷑 entre sus pa韘es, complementando luego el marco institucional para la conformaci髇 del MERCOSUR con la firma del Protocolo de Brasilia, en el mes de Diciembre del a駉 1991,

SANTIAGO C. LEIRAS

406

"O Que Diriam Sobre Os Portugueses?????" [What Would You Say about Portuguese People?]: Intercultural Curiosity in Multilingual Chat-Rooms  

ERIC Educational Resources Information Center

In this study, we intend to discuss questioning as a sign of Intercultural Communicative Competence in plurilingual environments, stressing the relationship between questioning and the process of developing discovery skills in Romance chat-rooms. Focusing specifically on episodes beginning with intercultural questioning, we will analyse: (1)

Araujo e Sa, Maria Helena; de Carlo, Maddalena; Melo-Pfeifer, Silvia

2010-01-01

407

Algunas consideraciones sobre el factor edad en relaci髇 con la ense馻nza de las lenguas extranjeras en la escuela  

Microsoft Academic Search

The purpose of this paper is to offer a critical analysis of the empirical research on age related differences which may be relevant to justify the introduction of foreign languages in the primary school. First, we discuss some of the empirical evidence both for and against the idea that children are better second language learners than adults. Finally, a number

JULIO ROCA DE LARIOS

408

ALGUNAS CONSIDERACIONES ACERCA DE LA REALIZACI覰 DE LA PROPIEDAD SOCIAL SOBRE LOS MEDIOS DE PRODUCCI覰 EN LA TRANSICI覰 AL SOCIALISMO  

Microsoft Academic Search

El presente trabajo es un breve an醠isis de la realizaci髇 de la propiedad en la transici髇 al Socialismo, partiendo del lugar que ocupa la propiedad dentro del sistema de relaciones de producci髇 y de la necesidad de lograr su realizaci髇 para la satisfacci髇 de los intereses de la sociedad y lograr la construcci髇 del Socialismo. La Investigaci髇 se justifica porque

Mariela Dom韓guez Pe馻

2012-01-01

409

Informatiza玢o das escolas: uma an醠ise do impacto das tecnologias da informa玢o e comunica玢o sobre o trabalho docente  

Microsoft Academic Search

O artigo tem como objeto de estudo o impacto da informa- tiza玢o das escolas no trabalho docente, tendo em vista a urg阯cia em se discutir o uso das Tecnologias da Informa- 玢o e Comunica玢o - TICs - no contexto educacional, a fim de se evitar, com isso, poss韛eis deslumbramentos (BELLONI, 2001, p. 73), que tendem a levar ao uso indiscriminado

Jacqueline de Castro Laranjo

2008-01-01

410

Preguntas y respuestas: Redes de Poblaciones Especiales Para la Investigaci髇 y el Entrenamiento de Programas de Educaci髇 sobre el C醤cer  

Cancer.gov

C髆o difiere el proyecto de Redes de Poblaciones Especiales de las recientes Iniciativas de Liderazgo del Instituto Nacional del C醤cer (NCI, por sus siglas en ingl閟) en las poblaciones apalache, negra e hispana?

411

MUESTRA DE UNA SE袮L BIOM蒁ICA EN TIEMPO REAL SOBRE UN MONITOR VGA CON RESOLUCI覰 640x480  

Microsoft Academic Search

In several equipment that incorporate stages of biomedical signal analysis is required the visualization of many of them in order to test the object behavior in real-time. This paper presents a configurable digital system, which allows the visualization of a low frequency signal as biomedical over a VGA monitor with 640x480 resolution using just a FPGA FLEX 10k10. It is

Cynthia P閞ez-Morris; Silvia Akamine-Serpa; V韈tor Murray-Herrera; Gerard F. Santill醤-Qui駉nez

412

CONSIDERA钦ES SOBRE O IMAGIN罵IO NO ENSINO DE F蚐ICA CONSIDERATIONS ON THE IMAGINARY IN THE TEACHING OF PHYSICS  

Microsoft Academic Search

The work consists of the unveiling the imaginary of five students of Physics with the weave of implications that the know ledge of the imaginary brings for the Teaching of Physics. The work is inserted in a systemic vision of the world represented by the Bio-cognitive approach that considers the education according to the existential perspective of the formation. The

M鬾ica Maria Biancolin; Nelson Fiedler-Ferrara

413

Trasplante meniscal: efecto sobre el cart韑ago articular. Estudio experimental en corderos Meniscal trasplant: articular cartilage effect. Experimental study in sheep  

Microsoft Academic Search

Meniscus is a functional structure which protects the ar- ticular cartilage by increasing both the joint congruity and contact area as well as preventing the focal distribution of stresses. Aim: Analyze the chondroprotector effect of the menis- cal allograft transplant. Material and method: We have studied the articular car- tilage after meniscectomy (group I), transplantation of fresh frozen meniscus allograft

2002-01-01

414

Neuroci阯cia computacional: um instrumento na pesquisa cl韓ica sobre o c閞ebro Computational Neurosciences: a tool for clinical research about the brain  

Microsoft Academic Search

This review discusses fundamental concepts in computational neuroscience and it presents applications of the computational model construction in clinical problems in neurology and neuropsychology. The text presents basic processes involved in the elaboration of computational models in neurosciences and it exhibits recent works in epilepsy and cognition showing the importance of the use of computational methods to study clinical problems

Marcelo Bastos Mazza

415

Etnograf韆 acelerada para transformar normas sociales sobre g閚ero y sexualidad en hombres puertorrique駉s heterosexuales1,2  

PubMed Central

Resumen La construcci髇 de roles de g閚ero dominantes contribuyen al riesgo de contraer VIH, y por tal raz髇 se ha urgido a que se integren las normas sociales relativas al g閚ero en las intervenciones preventivas del VIH. Este estudio pretende adaptar y desarrollar una intervenci髇 que facilite la transformaci髇 de normas sociales del g閚ero y de pr醕ticas sexuales en hombres puertorrique駉s. La intervenci髇 propone transformar normas sociales relacionadas al g閚ero y sexualidad en barras comunitarias utilizando el modelo de l韉eres de opini髇. Luego de ser elegidos/as, los/as l韉eres de opini髇 diseminan mensajes integrando la importancia de relaciones equitativas entre parejas para la prevenci髇 del VIH. La primera fase de esta intervenci髇 es discutida en este art韈ulo, la cual incluye un proceso de etnograf韆 acelerada para identificar los escenarios comunitarios en los que podemos desarrollar esta intervenci髇 y permitirnos entender la cultura de las barras comunitarias. A partir de las observaciones etnogr醘icas, pudimos: desarrollar un protocolo de seguridad para realizar las observaciones, desarrollar un perfil de la cultura de las barras, elegir las barras a participar en las dos condiciones del estudio y adaptar los instrumentos de la intervenci髇 para que respondieran a la particularidad de los/as participantes. PMID:25530828

Ortiz-Torres, Blanca; Rivera-Ortiz, Rafael J.; Mendoza, Sigrid

2014-01-01

416

EFECTO DEL MEDIO AGRESIVO SOBRE LA RESISTENCIA A LA FRACTURA DE ARMADURAS DE POLIMEROS REFORZADOS CON FIBRA DE VIDRIO  

Microsoft Academic Search

A new fiber reinforced polymer composite (FRP) has been developed for its use in concrete reinforcement as an alternative to carbon steels. The FRP have certain advantages on steel, due to their high specific mechanical resistance, their non-magnetic characteristic, their corrosion resistance and their high fatigue resistance. Certain differences respect to steel, as their smaller ductility and their lower elasticity

L. Toro; J. Fullea; C. Andrade; P. Comino; A. Miravete; Eduardo Torroja; Serrano Galvache

2007-01-01

417

EFECTO DE LOS NUTRIENTES Y CONDICIONES AMBIENTALES SOBRE LA PRODUCCI覰 DE POLISAC罵IDOS POR LA BACTERIA RHIZOBIUM LEGUMINOSARUM CEPA B  

Microsoft Academic Search

1. RESUMEN Los polisac醨idos de origen microbiano han adquirido importancia para la industria de alimentos, ya que tienen la capacidad para alterar las propiedades de flujo del agua y la posibilidad de formar geles. En este trabajo se estudi la producci髇 de biopol韒eros mediante el cultivo de la bacteria Rhizobium. El extracto de levadura report los mejores resultados al ser

R. Lancheros; L. Caicedo; Y. Navarro

418

A玢o antr髉ica e resultantes sobre a estrutura e composi玢o da Mata Atl鈔tica na Ilha Grande, RJ 1  

Microsoft Academic Search

The Atlantic Rain Forest at Ilha Grande is constituted by a mosaic of different aged forests. I examined a successional gradient of 5-yr, 25-yr and 50-yr-old slope forests, growing in areas once used for subsistence agriculture by the cai鏰ra people in what is today the Praia do Sul State Biological Reserve on Ilha Grande, Rio de Janeiro state. These areas

Rog閞io Ribeiro de Oliveira

419

Dispe sobre as bases de dados oficiais para a alocao de vagas docentes de Magistrio Superior da Universidade  

E-print Network

Universidade Federal do Rio de Janeiro. O Conselho de Ensino de Gradua玢o (CEG) e o Conselho de Ensino para Universidade Federal do Rio de Janeiro; d. que o processo de aloca玢o de vagas docentes deve obedecer Universidade Federal do Rio de Janeiro tais como SIGA, SIGMA, CPPD e SIRHu ou qualquer outra base que

Liu, I-Shih

420

DESALINEACIN ELECTORAL Y NUEVOS ESCENARIOS POLTICOS. UN ESTUDIO COMPARADO SOBRE LOS CASOS DE COLOMBIA, COSTA RICA Y URUGUAY  

E-print Network

COLOMBIA, COSTA RICA Y URUGUAY Enrico GIACOMETTI SARTHOU Universidad de Salamanca giacometti estudiar estos procesos de cambio, los casos escogidos ser谩n Costa Rica, Colombia y Uruguay. Palabras Clave

Paris-Sud XI, Universit茅 de

421

Departamento de Fisica y Matematicas Matematicas -Grado en Biologia Hoja de problemas sobre funciones de varias variables  

E-print Network

centradas en el origen de radio z - 1. #12;b) Los cortes con los planos OXZ y OY Z son las rectas z = 卤x y z = 卤y, respectivamente. Las curvas de nivel son circumferencias centradas en el origen de radio z, respectivamente. Las curvas de nivel son circumferencias centradas en el origen de radio z. Observa que el

422

424 THE WILSON BULLETIN Vol. 112, No. 3, September 2000 BERTONI, A. DE W. 1919. Apuntes sobre aves del Par-  

E-print Network

^nicas: viabilidade e adaptac赂o~es. Ph.D. diss., Univ. Estadual de Campinas, Campinas, Brazil. PARKER, J. W. 1977, and the Bananaquit, a Nectar Specialist Sandra J. Webster1 and Louis Lefebvre1,2 ABSTRACT.--Generalist birds Cana- da. 2 Corresponding author; E-mail: louis lefebvre@maclan.mcgill.ca food types

Lefebvre, Louis

423

EDUCA敲O HOL蚐TICA: UM ESTUDO SOBRE O PENSAMENTO COMPLEXO NOS CURSOS DE LICENCIATURAS DAS IES EM PARNA虰A-PI  

Microsoft Academic Search

This work intents to socialize an inquiry of formative and exploratory character that studies the complexity of the knowledge in the curriculum of initial formation of the courses of Pedagogy in Parna韇a-PI. The research was carried through with professors of the Piauiense College (FAP\\/Parna韇a), of the State University of Piau (UESPI) and the Federal University of Piau (UFPI). For this,

Maria Sueli Lopes da Silva; Francisco Afranio Rodrigues; Keila Cristina; Alves da Silva; Ana Catarina; Magalh鉫s Sous

424

Lecturas sobre educacion de adultos en America latina (Readings on Adult Education in Latin America). Serie: Retablo de Papel 14.  

ERIC Educational Resources Information Center

Twelve essays written in Spanish on the state of adult education in Latin America are presented. The essays are organized into three main sections, including: "Concepto y evolucion historica de la educacion de adultos" (Conception and Historical Evolution of Adult Education); "Aspectos particulares" (Specific Subjects); and "Tendencias y

Latapi, Pablo, Comp.; Castillo, Alfonso, Comp.

425

Memorias del Cuarto Simposio Internacional Sobre Polticas, Planificacin y Economa de los Incendios Forestales: Cambio Climtico e Incendios Forestales  

E-print Network

incluir la identificaci髇 del medio costo-beneficio mas rentables para la asignaci髇 de recursos para el presupuesto de gesti髇 de incendios. En las 醨eas recreativas, la opini髇 de los visitantes debe ser incluida

Standiford, Richard B.

426

Lecciones sobre el financiamiento de nuevas l韓eas ferroviarias urbanas y suburbanas de pasajeros: El caso de los ferrocarriles de Tokio  

Microsoft Academic Search

Los ferrocarriles urbanos y suburbanos en las grandes ciudades no cubren con sus ingresos propios los costos de capital y, usualmente, tampoco cubren los costos de operaci髇. Este estado de cosas requiere nuevas alternativas de financiamiento que contribuyan a disminuir el \\

Jorge Kohon

2011-01-01

427

Estrategia sobre ubicaci髇 y funcionamiento de estaciones de transferencia para el manejo de residuos s髄idos en Colombia  

Microsoft Academic Search

El Art韈ulo 1o del Decreto 1713 de 2002 defini como uno de los componentes y actividades del servicio p鷅lico domiciliario de aseo, la transferencia de residuos s髄idos previo a su disposici髇 final. Entre tanto, a partir de septiembre de 2005 y abril de 2009 comienzan a operar las estaciones de transferencia del Valle de Aburra y Palmaseca, respectivamente; convirti閚dose en

Jorge Andr閟 Perdomo Calvo; Juan Andr閟 Ram韗ez

2010-01-01

428

Sobre les causes i les estrat鑗ies editorials d'una traducci: Lavida de sant Vincente Ferrer (1589)  

Microsoft Academic Search

La vida de sant Vincente Ferrer (Valencia, Hereus de J. Navarro, 1589) is still listed in some catalogues as an anonymous work, despite the book having been recognized for decades to be a translation of the Vida of the saint written in Catalan by Miquel P閞e and first published in Valencia in 1510. This article considers the reasons why this

Tom鄐 Mart韓ez Romero

2011-01-01

429

Comienza la construcci髇 de instalaci髇 patrocinada por el NCI en Puerto Rico para realizar estudios cl韓icos sobre el c醤cer  

Cancer.gov

El gobierno de Puerto Rico ha destinado $196 millones de d髄ares para construir un hospital oncol骻ico de 287 000 pies cuadrados en San Juan, que contar con 96 camas. El nuevo hospital es el primero en su clase en la regi髇 caribe馻 y en 閘 se llevar醤 a cabo tratamientos para el c醤cer y estudios cl韓icos.

430

Creencias sobre la salud y los medicamentos en la poblaci髇 asm醫ica espa駉la. Validaci髇 de 2 instrumentos para su medida  

Microsoft Academic Search

ObjectiveWe translated 2 health beliefs questionnaires梐n instrument based on the health belief model (HBM) containing 19 items in 6 domains and the Beliefs About Medicines Questionnaire (BMQ) containing 18 items divided into a general and a specific section梐nd then administered and validated them in a group of Spanish patients with asthma.

Miguel Perpi襻 Tordera; Eva Mart韓ez Morag髇; Amparo Belloch Fuster; Amparo Lloris Bayo; Concepci髇 Pellicer C韘car

2009-01-01

431

PEIRCE E A CI蔔CIA DA INFORMA敲O: considera珲es preliminares sobre as rela珲es entre a obra peirceana e a organiza玢o da informa玢o  

Microsoft Academic Search

The interdisciplinary relationships of the information science with Charles Sanders Peirces work (1839-1914) are still little explored. The contributions of the theory of signs in the information science, specifi- cally in the processes, instruments and products of the information organization, they fall back upon the expla- nations of the structuralist semiology and linguistics. The research is a theoretical study that

Carlos C鈔dido de Almeida; Jos Augusto Chaves Guimar鉫s

432

Una nota sobre la recuperacion de costes de los servicios del agua en la cuenca del Gallego  

Microsoft Academic Search

Up to date, water management in Spain has been focused on supply approaches, with the result of providing consumers with this resource at a low price. Developments in the institutional framework regulating water management in the European context (mainly the implementation of the Water Framework Directive) have shifted this approach in order to promote sustainable water use. To achieve this

Luis Perez y Perez; Jesus Barreiro Hurle

2007-01-01

433

Influ阯cia de fatores qu韒icos do solo sobre a incid阯cia do mal-do-Panam na bananeira cv. pacovan na Para韇a  

Microsoft Academic Search

This objective of this work was to investigate the correlation of chemicals soil factors and its influences with the incidence and severity of Panama disease ( Fusarium oxysporum f. sp. cubense ) in banana tree ( Musa sapientium cv. pacovan) in the State of Para韇a. The work was carried out at Areia, Alagoa Nova, Bananeiras and Lagoa Seca Municipalities, where

Edson Batista Lopes; Carlos Henrique de Brito; Ivanildo Cavalcanti de Albuquerque; Arlington Ricardo

434

Lichenochora epinashii sp. nov. y L. sinapispermae sp. nov. ( Phyllachorales, ascomicetes), dos nuevos hongos liquen韈olas sobre Caloplaca  

Microsoft Academic Search

Description of two new species of Lichenochora (Phyllachorales, lichenicolous fungi): Lichenochora epinashii Nav.-Ros. et Etayo sp. nov. and L. sinapispermae Etayo et Nav.-Ros. sp. nov. L. epinashii is so far known from Baja California (Mexico), growing on thallus of Caloplaca nashii Nav. Ros., Gaya et Hladun which occurs on caliche (desertic soil encrustment), and L. sinapispermae is described from Navarra

Pere Navarro-Rosin閟; Javier Etayo

2001-01-01

435

N蚔EIS DE PRODU敲O EM VINHEDOS DE ALTITUDE DA CV. MALBEC E SEUS EFEITOS SOBRE OS COMPOSTOS FEN覮ICOS1  

Microsoft Academic Search

The present work had as objective to get information on the phenolic compounds evolution and anthocyanin contents in the berries of grapes, in accordance with the level of clusters thinning, during the maturation to establish criteria that contribute to define the most appropriate management to the vineyard. This experiment was carried out in 2005\\/06 and 2006\\/07 seasons, in a commercial

LEONARDO CURY DA SILVA; AIKE ANNELIESE KRETZSCHMAR; LEO RUFATO; ALBERTO FONTANELLA BRIGHENTI; CAROLINE SCHLEMPER

436

Full informatiu sobre les pautes d'actuaci en cas d'emergncia (usuari visitant de l'edifici Merc)  

E-print Network

) Anvers Instrucci贸 b脿sica per actuar en cas d'emerg猫ncia En cas que detectis un foc o siguis testimoni d'alarma disponibles a passadissos i distribu茂dors. 3. Sufoca el foc emprant un extintor / Socorre a la persona

437

Propuesta de actividades sobre medios de ense馻nza para potenciar el conocimiento de cultura pol韙ica en los estudiantes de la FOC \\  

Microsoft Academic Search

Los medios de ense馻nza conforman un sistema en funci髇 de los objetivos y contenidos. Producen un resultado superior en las clases de Cultura Pol韙ica en la Educaci髇 de Adultos, contribuyendo a la calidad de dicho proceso y a la formaci髇 integral de los estudiantes. La siguiente investigaci髇 tiene como objetivo: Elaborar una propuesta de actividades para el empleo de medios

Liliana Llanes Robaina; Ebrey Delgado Santana; Marisela Cantero Rodr韌uez

2011-01-01

438

Artculo publicado en "Geogaceta", 32: 191-194. 2002 Sobre la contaminacin microbiolgica del acufero de la  

E-print Network

mayoritariamente para el regad韔, con una extracci髇 neta anual superior a 70 hm 3 , y, en menor medida, para perforaron numerosos sondeos de emergencia de los que se lleg a abastecer Granada capital; en la actualidad

Castillo, Antonio

439

Cuestionario avanzado sobre Open Access y repositorios institucionales [Contestado por un investigador del rea de Recursos Naturales  

E-print Network

, PubMed Central 3.- 緾ree que la puesta en marcha del repositorio institucional Digital.CSIC es una investigadores cuando piensan en archivar sus art韈ulos en un repositorio institucional? No, creo que es una investigadores en su repositorio institucional a la hora de evaluar la actividad cient韋ica personal o

440

Cuestionario avanzado sobre Open Access y repositorios institucionales [Remedios Melero, Instituto de Agroqumica y Tecnologa de Alimentos (IATA)  

E-print Network

publicaciones de su inter閟? S 3.- 緾ree que la puesta en marcha del repositorio institucional Digital.CSIC es en archivar sus art韈ulos en un repositorio institucional? No, desde mi punto de vista este miedo investigadores en su repositorio institucional a la hora de evaluar la actividad cient韋ica personal o

441

Cuestionario avanzado sobre Open Access y repositorios institucionales [Jorge M. Garca Martnez, Instituto de Microelectrnica de Madrid (IMM-CNM)  

E-print Network

inter閟? No 3.- 緾ree que la puesta en marcha del repositorio institucional Digital.CSIC es una buena investigadores cuando piensan en archivar sus art韈ulos en un repositorio institucional? No 6.- 縇e parecer韆 razonable tener en cuenta la participaci髇 de los investigadores en su repositorio institucional a la hora

442

Diseo e Implantacin de Base de Datos para la Difusin y Bsqueda de informacin sobre titulaciones contenida en los  

E-print Network

a las universidades espa帽olas con el desarrollo e implementaci贸n de una herramienta software capaz de desarrollo del Espacio de Educaci贸n Superior Europeo. El DS tiene como prop贸sito ofrecer un volumen de datos atender consultas de informaci贸n a trav茅s del sitio web del Ministerio de Educaci贸n y Ciencia (MEC), y que

Carde帽osa, Jes煤s

443

DISCIPLINAS COM HORRIO FIXO 2012.1 * Informaes sobre os demais cdigos verificar no final desta pgina*  

E-print Network

a tecnologia de Sistemas Multiagentes (SMAs) 茅 uma abordagem promissora para o desenvolvimento de aplica莽玫es em das vantagens que a tecnologia de agentes pode trazer para v谩rios dom铆nios de aplica莽茫o, dentre eles medicina, telecomunica莽玫es, simula莽茫o de meio-ambiente e outros, atrav茅s da condu莽茫o de experimentos

Rodriguez, Noemi

444

DISCIPLINAS COM HORRIO FIXO 2011.2 * Informaes sobre os demais cdigos verificar no final desta pgina*  

E-print Network

vantagens que a tecnologia de agentes pode trazer para v谩rios dom铆nios de aplica莽茫o, dentre eles medicina.2 INF2005 颅 T贸p. de Eng陋 de Software I 颅 Sistemas Multiagentes, Prof. Lucena Dado que a tecnologia de muitos casos de sucesso de utiliza莽茫o da tecnologia de agentes, que j谩 est茫o contribuindo

Rodriguez, Noemi

445

Producci髇 masiva automatizada de la broca del caf, Hypothenemus hampei (Coleoptera: Scolytidae) sobre la dieta artificial Cenibroca modificada.  

Technology Transfer Automated Retrieval System (TEKTRAN)

An automated system for the mass rearing of coffee berry borer, CBB, Hypothenemus hampei (Ferrari) was developed at the National Biological Control Laboratory, USDA-ARS in the United States. A novel cell design of 32 cell trays (30 x 14.6 x 1.1 cm) and an automated diet dispenser were developed and ...

446

Soil-geomorphology interactions and paleoclimatic implications of an ornithogenic soil toposequence on Rata Island, Fernando de Noronha Archipelago, South Atlantic  

NASA Astrophysics Data System (ADS)

The formation of highly phosphatized soils on sites of avian activity is a common feature of oceanic islands. We characterized a toposequence of phosphatic soils on Rata Island, to evaluate the soil genesis based on local topographic variations. For this purpose, four soils ranging from the upper hill down to the lowest landscape position on the island, representing a range of parent materials (basalt and calcareous sands), were analyzed. In the lowest landscape position a shallow Regosol was identified, strongly influenced by birds and marine sprays, developed on 搆arstified Pleistocene calcarenites; the three other soils in the upper part of the toposequence are Ornithogenic Cambisols, ranging from a deep Cambisol profile on Basalt lava to intermediate Cambisols on mixed colluvial sediments of the basalt/calcareous. The lowermost Regosol is associated with a rugged landscape with strong calcarenite dissolution and karstification. The soil phosphatization is clearly an inherited process of the Late Quaternary age, when climate conditions were different. Initial weathering took place in the last interglacial period, under wetter conditions during which the Tertiary basalts were strongly weathered, leaving corestones in a saprolitic, oxidized mass. In the late Pleistocene, a gentle surface distributed these weathering products along the pediment slopes as colluvial materials, whereas in the coastal areas aeolian processes formed large sand dunes composed of reworked calcareous sands from marine sources during a time of very low sea level. During this time, widespread bird activity accounted for secondary apatite formation on the surface of calcareous oolites. Finally, the Holocene warming was accompanied by increasing sea level, enhanced tropical weathering, Fe and Al mobility and variscite formation superimposed on degraded Ca-phosphates, forming two phase phosphatic aggregates.

de Oliveira, F醔io Soares; Schaefer, Carlos Ernesto G. R.; Abrah鉶, Walter Ant鬾io Pereira; Clemente, Eliane de Paula; Simas, Felipe Nogueira Bello

2014-07-01

447

Low intensity ultrasonic vibration amplitude as a tool for characterisation water stable soil aggregates  

NASA Astrophysics Data System (ADS)

Ultrasonic dispersion of soil aggregates is a useful method to determine soil aggregate stability. Commercially available ultrasonic devices, however, operate at relatively high ultrasonic power, which hampers the analysis of less stable aggregates. Ultrasonic power is controlled in these devices with rather low accuracy and is used for correlation with the process of soil disaggregation. Self-developed ultrasonic equipment remedies these shortcomings by using low intensity ultrasonic vibrations. The vibration amplitude rather than the ultrasonic power is used to control the magnitude of loading in the dispersion experiment. Under well-defined geometrical conditions, the vibration amplitude strongly correlates with the magnitude of the acoustic pressure waves emitted into the fluid that cause disaggregation of soil particles. Samples of aggregates 2 000 - 250 ?m of a degraded loamy silt chernozem, a loamy clay cambisol and a loamy sand cambisol had been collected under different tillage regimes in Austria: conventional tillage (CT) with mechanical weed control, reduced tillage (RT) and no tillage (NT) with inter cropping in winter. The cavitation threshold of gas saturated de-ionized water was determined at an ultrasonic vibration amplitude of 0.5-0.6 祄 at 20 kHz frequency (acoustic pressure 0.9-1.1 bar) with a diode array spectrophotometer. Subsequent experiments were performed near this limit to be able to characterize weakly aggregated soils. Measuring soil aggregate stability (SAS) according to DIN norm showed greater aggregate stability of cambisol than of chernozem, however, could hardly show influences of tillage. Better results were obtained with the USAS (ultrasound soil aggregate stability) method, which on the one hand validated the SAS results. On the other hand it was possible to show an influence of soil tillage on aggregate stability, which significantly decreased from NT to RT and to CT for both soil types. The measurements correlated with total organic carbon content in aggregates that was greater in no tillage than in conventional tillage and larger in cambisol than in highly degraded chernozem. The data suggest that the dynamic of soil dispersion depends on the absorbed ultrasonic energy and the vibration amplitude. Promising results were obtained at ultrasonic vibration amplitudes of 0.5 ?m and 2 ?m, respectively. Dispersion experiments at 5 ?m did not allow for a differentiation between soil types nor tillage variant, which indicates that low intensity vibrations should be used to monitor differences in aggregate stabilities.

Mentler, Axel; Schomakers, Jasmin; Mayer, Herwig

2013-04-01

448

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. R閟um De nombreuses 閠udes ont 閠 r閍lis閑s pour 関aluer le degr de pollution des aquif鑢es par les pesticides aux 蓆ats-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 r閟ultats des 閠udes 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 consid閞er avec pr閏aution, la base de donn閑s sur les pesticides dans les eaux souterraines de l'Agence am閞icaine pour la protection de l'environnement a 閠 utilis閑 pour centrer la discussion sur le potentiel de biotransformation du dibromo閠hane (EDB), de l'atrazine, des d閟herbants ac閠anild閟 et de l'aldicarb, qui tous ont 閠 d閠ect閟 dans les nappes des 蓆ats-Unis. Les r閟ultats de plus de deux douzaines d'閠udes indiquent qu'il existe un potentiel de biotransformation de ces pesticides dans les nappes, bien qu'entre chacun de ces pesticides il existe des diff閞ences tr鑣 nettes dans la biotransformation. Ces variations sont en fait dues la fois des diff閞ences dans les m閠hodes exp閞imentales et dans les h閠閞og閚閕t閟 dans les mat閞iaux 閠udi閟. Cependant, parce que les m閏anismes de la biotransformation ne sont pas bien 閠udi閟, il est en g閚閞al impossible d'extrapoler les pr閐ictions du potentiel de biotransformation des sites d'閠ude sp閏ifiques. Ces r閟ultats soulignent la n閏essit de mieux comprendre la r間ulation g閚閠ique microbienne des processus de biotransformation, pour que l'information g閚閠ique puisse 阾re 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 n鷐ero de estudios para evaluar la contaminaci髇 por pesticidas en los acu韋eros de los Estados Unidos de Am閞ica. Sin embargo, las investigaciones sobre biotransformaci髇 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 art韈ulo es mostrar ejemplos de biotransformaci髇 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 Subterr醤eas)" perteneci

Hoyle, Blythe L.; Arthur, Ellen L.

449

Impacts of afforestation on groundwater resources and quality  

NASA Astrophysics Data System (ADS)

Plans to double the proportion of land under forest cover in Ireland by the year 2035 have been initiated. The plan, primarily financially driven, ignores potential environmental impacts of forestry, particularly impacts on groundwater resources and quality. Since groundwater supplies almost 25% of Ireland's total potable water, these impacts are important. Field investigations indicate that afforestation leads to a reduction in runoff by as much as 20%, mainly due to interception of rainfall by forest canopies. Clearfelling has the opposite impact. Implications are that uncoordinated forestry practices can potentially exacerbate flooding. Groundwater recharge is affected by forestry, largely due to greater uptake of soil water by trees and to increased water-holding capacity of forest soils, arising from higher organic contents. Recharge rates under forests can be reduced to one tenth that under grass or heathland. Groundwater quality may be affected by enhanced acidification and nitrification under forests, due partly to scavenging of atmospheric pollutants by forest canopies, and partly to greater deposition of highly acid leaf litter. The slower recharge rates of groundwater under forests lead to significant delays in manifestation of deterioration in groundwater quality. R閟um. Des plans sont l'閠ude pour doubler la proportion du couvert forestier en Irlande d'ici 2035. Le plan, primitivement d閠ermin sur une base financi鑢e, ignore les impacts environnementaux potentiels de la foresterie, et particuli鑢ement les impacts sur les ressources en eau souterraine et leur qualit. Du fait que les eaux souterraines satisfont presque 25% du total de l'eau potable de l'Irlande, ces impacts sont importants. Les 閠udes de terrain montrent que le reboisement conduit une r閐uction du ruissellement d'au moins 20%, principalement cause d'une interception de la pluie par le couvert forestier. Les coupes ont un impact contraire. Les implications sont que des pratiques foresti鑢es non coordonn閑s sont susceptibles d'exacerber les crues. La recharge des nappes est affect閑 par la foresterie, surtout cause de pr閘鑦ements plus importants de l'eau du sol par les arbres et cause de la capacit accrue des sols forestiers retenir de l'eau, conduisant de plus fortes teneurs en mati鑢es organiques. Les taux de recharge sous les for阾s peuvent 阾re r閐uits d'un dixi鑝e par rapport la prairie ou la lande. La qualit de l'eau souterraine peut 阾re affect閑 par une acidification accrue et par une nitrification sous les for阾s, provoqu閑s pour une part par une fixation des polluants atmosph閞iques par le couvert forestier et pour une autre part par un d閜魌 plus important d'une liti鑢e plus fortement acide. Les taux de recharge plus lente des nappes sous les for阾s conduisent des retards importants dans la manifestation de la d閠閞ioration de la qualit de l'eau souterraine. Resumen. Se han iniciado los planes para duplicar la proporci髇 de terrenos reforestados en Irlanda hacia el a駉 2035. El plan, impulsado por fines econ髆icos, ignora los impactos potenciales medioambientales de la silvicultura, y, en particular, los impactos a los recursos de aguas subterr醤eas y a su calidad. Puesto que el 25 % del agua potable en Irlanda es suministrada por medio de aguas subterr醤eas, dichos impactos son importantes. Las investigaciones de campo indican que la reforestaci髇 lleva a una reducci髇 de la escorrent韆 de hasta un 20 %, fundamentalmente por la interceptaci髇 de la lluvia en las copas de los 醨boles, mientras que la deforestaci髇 tiene el impacto opuesto. Las implicaciones son tales que las pr醕ticas forestales descoordinadas pueden aumentar enormemente el riesgo de inundaciones. Tambi閚 la recarga a los acu韋eros se ve afectada por la reforestaci髇, debido, sobre todo, al uso del agua del suelo por los 醨boles y a la mayor capacidad de retenci髇 de los suelos en zonas boscosas, al disponer de m醩 materia org醤ica. Las tasas de recarga en zonas boscosas puede

Allen, Alistair; Chapman, Deborah

2001-07-01

450

Spanish Network on Effects of Wildfires on Soils. The view after 5 years of networking  

NASA Astrophysics Data System (ADS)

1. WHAT IS FUEGORED? The Spanish Thematic Network "Effects of Wildfires on Soils" (FUEGORED, http://grupo.us.es/fuegored) has been working for over 5 years at becoming a point of reference for the study of fire-affected soils and restoration strategies. FUEGORED started in 2007, originally scheduled to run three years, as a result of the interest of Spanish researchers for developing better strategies and scientific interchange of ideas, people and collaboration between research groups. The first steps towards the establishment of a working group were a series of fieldtrips through Spain (2003), USA (2004) and Portugal (2005), where discussions about problems and research strategies arised. In its early years the network was supported by the former Ministry of Science and Innovation. This is a project to review scientific knowledge developed to date and discuss and propose future developments in scientific research about the effects of wildfires on soils. The objectives of the network are to promote and disseminate scientific research findings, provide technical and management information, and facilitate transference of knowledge between scientists, forest managers, students and society. 2. WHO IS IN THE NETWORK? The research group consists of the leading names of Spanish science in the topic and young talents, which are currently developing the most innovative research lines. Currently, the network is formed by 245 members, researchers from over 30 Spanish universities and research centers to provide the experience of decades of scientific and technical work in areas affected by forest fires and outstanding foreign researchers from Europe, Australia and America, including countries such as Australia, Italy, Lithuania, Portugal, UK, USA and others. Forest managers and technicians from various institutions are also present. 3. MAIN ACHIEVEMENTS Four international congresses have been promoted by the network in Valencia, 2008, Seville, 2009, Santiago de Compostela, 2010 and Tenerife, 2012 (the next meeting will be held in Barcelona in 2014). In addition, several contributions, courses and workshops have been celebrated in Spanish or international forums as the EGU General Assembly, the International Meeting of Fire Effects on Soil Properties (FESP2011 and forthcoming FESP2013) and the International Conference on Geomorphology have been also sponsored. Other activities include the publication of book series (two volumes have been published: Cerd and Jord醤, 2010; Cerd and Mataix-Solera, 2009. The third one is currently in preparation), books of abstracts (D韆z-Ravi馻 et al., 2010; Jord醤 et al., 2009), a series of technical reports (in preparation) and special issues in international journals (in, for example, Catena, Geoderma, Environmental Research or the International Journal of Wildland Fire). A four-monthly journal (FLAMMA; http://grupo.us.es/fuegored/flamma) is published regularly since 2010 with an increasing audience and issues scheduled until 2014. Also, the network has promoted voluntary environmental actions and educational activities. 4. MAIN CHALLENGES The next challenges are to continue promoting the interaction between scientists, decision makers, forest management staff and end-users and to establish new connections with European institutions and research groups. ACKNOWLEDGEMENTS The Spanish Thematic Network "Effects of Wildfires on Soils" was supported between 2007 and 2009 by the Spanish Ministry of Science and Innovation (projects CGL2007-28764-E 2007-2008 and CGL2008-01632-E 2009). REFERENCES Cerd, A. Jord醤, A. (Eds.). 2010. Actualizaci髇 de M閠odos y T閏nicas para el Estudio de los Suelos Afectados por Incendios Forestales [Updated methods and techniques for the study of soils affected by wildfires; in Spanish]. C醫edra de Divulgaci de la Ci鑞cia, Universitat de Val鑞cia, FUEGORED 2010. Valencia. 521 pp. ISBN: 978-84-370-7887-8. Cerd, A., Mataix-Solera, J. (Eds). 2009. Efectos de los incendios forestales sobre los suelos en Espa馻. El estado de la cuesti髇 vis

Jord醤, Antonio; Mataix-Solera, Jorge; Cerd, Artemi

2013-04-01

451

Hydrogeology in North America: past and future  

NASA Astrophysics Data System (ADS)

This paper is a retrospective on the evolution of hydrogeology in North America over the past two centuries, and a brief speculation of its future. The history of hydrogeology is marked by developments in many different fields such as groundwater hydrology, soil mechanics, soil science, economic geology, petroleum engineering, structural geology, geochemistry, geophysics, marine geology, and more recently, ecology. The field has been enriched by the contributions of distinguished researchers from all these fields. At present, hydrogeology is in transition from a state of discovering new resources and exploiting them efficiently for maximum benefit, to one of judicious management of finite, interconnected resources that are vital for the sustenance of humans and other living things. The future of hydrogeology is likely to be dictated by the subtle balance with which the hydrological, erosional, and nutritional cycles function, and the decision of a technological society to either adapt to the constraints imposed by the balance, or to continue to exploit hydrogeological systems for maximum benefit. Although there is now a trend towards ecological and environmental awareness, human attitudes could change should large parts of the populated world be subjected to the stresses of droughts that last for many decades. Cet article est une r閠rospective de l'関olution de l'hydrog閛logie en Am閞ique du Nord sur les deux derniers si鑓les, et une br鑦e 関aluation de son futur. L'histoire de l'hydrog閛logie est marqu閑 par le d関eloppement de plusieurs techniques de terrain telles, l'hydrologie des eaux souterraines, la m閏anique des sols, les sciences du sol, la g閛logie 閏onomique, l' ing閚ierie p閠roli鑢e, la g閛logie structurale, la g閛chimie, la g閛physique, la g閛logie marine et plus r閏emment l'閏ologie. La science a 閠 enrichie par la contribution de plusieurs chercheurs distingu閟, provenant de toutes ces branches. A pr閟ent, l'hydrog閛logie est la transition entre la volont de d閏ouvrir de nouvelles ressources et l' exploitation la plus b閚閒ique au possible, et un management judicieux des ressources finies, interconnect閑s, qui sont vitales pour l' approvisionnement des hommes et autres formes de vie. Le futur de l' hydrog閛logie sera dict par la balance subtile dans laquelle intervient les cycles de l'hydrologie, de l'閞osion, de la nutrition, et la d閏ision d'une soci閠 technologique qui s'adapterait aux contraintes de la balance, ou qui continuerait d'exploiter les syst鑝es hydrologiques pour un b閚閒ice maximum. Par ailleurs il y a une nette tendance inclure les aspects 閏ologiques, les aspects environnementaux, et les changements humains qui pourraient 阾re influenc閟 par les modifications hydrog閛logiques observ閑s depuis une dizaine d'ann閑s. Este articulo es una retrospectiva sobre la evoluci髇 de la hidrogeolog韆 en Norte Am閞ica en los pasados dos siglos, y una breve especulaci髇 de su futuro. La historia de la hidrogeolog韆 est marcada por desarrollos en muchos campos diferentes tal como hidrolog韆 de aguas subterr醤eas, mec醤ica de suelos, ciencia del suelo, geolog韆 econ髆ica, ingenier韆 del petr髄eo, geolog韆 estructural, geoqu韒ica, geof韘ica, geolog韆 marina, y m醩 recientemente, ecolog韆. El campo se ha enriquecido por las contribuciones de investigadores distinguidos en todos esos campos. Actualmente, la hidrogeolog韆 se encuentra en transici髇 de un estado de descubrir nuevos recursos y explotarlos eficientemente para un beneficio m醲imo, a un estado de gesti髇 juiciosa de recursos finitos, interconectados, que son vitales para el sustento de humanos y otras cosas vivientes. El futuro de la hidrogeolog韆 posiblemente est determinado por el balance sutil con el cual funcionan los ciclos nutricionales, erosionales e hidrol骻icos, y la decisi髇 de una sociedad tecnol骻ica para ya sea adaptarse a las restricciones impuestas por el balance o para continuar con la explotaci髇 de los sistemas hidrogeol骻icos para un benefici

Narasimhan, T. N.

2005-03-01

452

Effects of Fe oxide on N transformations in subtropical acid soils  

PubMed Central

Subtropical ecosystems are often characterized by high N cycling rates, but net nitrification rates are often low in subtropical acid soils. NO3?-N immobilization into organic N may be a contributing factor to understand the observed low net nitrification rates in these acid soils. The effects of Fe oxide and organic matter on soil N transformations were evaluated using a 15N tracing study. Soil net nitrification was low for highly acidic yellow soil (Ferralsols), but gross ammonia oxidation was 7 times higher than net nitrification. In weakly acidic purple soil (Cambisols), net nitrification was 8 times higher than in Ferralsols. The addition of 5% Fe oxide to Cambisols, reduced the net nitrification rate to a negative rate, while NO3?-N immobilization rate increased 8 fold. NO3?-N immobilization was also observed in Ferralsols which contained high Fe oxides levels. A possible mechanism for these reactions could be stimulation of NO3?-N immobilization by Fe oxide which promoted the abiotic formation of nitrogenous polymers, suggesting that the absence of net nitrification in some highly acid soils may be due to high rates of NO3?-N immobilization caused by high Fe oxide content rather than a low pH. PMID:25722059

Jiang, Xianjun; Xin, Xiaoping; Li, Shiwei; Zhou, Junchao; Zhu, Tongbin; M黮ler, Christopher; Cai, Zucong; Wright, Alan L.

2015-01-01

453

Thallium contamination of soils/vegetation as affected by sphalerite weathering: a model rhizospheric experiment.  

PubMed

The environmental stability of Tl-rich sphalerite in two contrasting soils was studied. Rhizospheric conditions were simulated to assess the risk associated with sulfide microparticles entering agricultural (top)soils. The data presented here clearly demonstrate a significant effect of 500 ?M citric acid, a model rhizospheric solution, on ZnS alteration followed by enhanced Tl and Zn release. The relative ZnS mass loss after 28 days of citrate incubation reached 0.05 and 0.03 wt.% in Cambisol and Leptosol samples respectively, and was up to 4 times higher, compared to H2O treatments. Incongruent (i.e., substantially increased) mobilization of Tl from ZnS was observed during the incubation time. Generally higher (long-term) stability of ZnS with lower Tl release is predicted for soils enriched in carbonates. Furthermore, the important role of silicates (mainly illite) in the stabilization of mobilized Tl, linked with structural (inter)layer Tl-K exchange, is suggested. Thallium was highly bioavailable, as indicated by its uptake by white mustard; maximum Tl amounts were detected in biomass grown on the acidic Cambisol. Despite the fact that sulfides are thought as relatively stable phases in soil environments, enhanced sulfide dissolution and Tl/trace element release (and bioaccumulation) can be assumed in rhizosphere systems. PMID:25265594

Van?k, Ale; Gr鰏slov, Zuzana; Mihaljevi?, Martin; Ettler, Vojt?ch; Chrastn, Vladislav; Kom醨ek, Michael; Tejneck, V醕lav; Dr醔ek, Ond?ej; Pen頌ek, V韙; Galu歬ov, Ivana; Van??kov, Barbora; Pavl?, Lenka; Ash, Christopher

2015-02-11

454

Effects of Fe oxide on N transformations in subtropical acid soils  

NASA Astrophysics Data System (ADS)

Subtropical ecosystems are often characterized by high N cycling rates, but net nitrification rates are often low in subtropical acid soils. NO3--N immobilization into organic N may be a contributing factor to understand the observed low net nitrification rates in these acid soils. The effects of Fe oxide and organic matter on soil N transformations were evaluated using a 15N tracing study. Soil net nitrification was low for highly acidic yellow soil (Ferralsols), but gross ammonia oxidation was 7 times higher than net nitrification. In weakly acidic purple soil (Cambisols), net nitrification was 8 times higher than in Ferralsols. The addition of 5% Fe oxide to Cambisols, reduced the net nitrification rate to a negative rate, while NO3--N immobilization rate increased 8 fold. NO3--N immobilization was also observed in Ferralsols which contained high Fe oxides levels. A possible mechanism for these reactions could be stimulation of NO3--N immobilization by Fe oxide which promoted the abiotic formation of nitrogenous polymers, suggesting that the absence of net nitrification in some highly acid soils may be due to high rates of NO3--N immobilization caused by high Fe oxide content rather than a low pH.

Jiang, Xianjun; Xin, Xiaoping; Li, Shiwei; Zhou, Junchao; Zhu, Tongbin; M黮ler, Christopher; Cai, Zucong; Wright, Alan L.

2015-02-01

455

Specific features of the genesis of automorphic soils of the northern forest-tundra (southeast of the Bol'shezemel'skaya tundra)  

NASA Astrophysics Data System (ADS)

Automorphic soils developed from sandy materials (podzolized podburs, (Entic Podzols) and iron-illuvial podzols (Haplic Podzols)) and loamy materials (organic cryometamorphic soils (Gelic Cambisols) and iron-illuvial svetlozems (Spodi-Stagnic Cambisols)) were studied in the northern forest-tundra zone. Podzolized podburs and podzols of tundra cenoses were less podzolized in comparison with the analogous soils developed under forest cenoses. This can be explained by a higher intensity of cryogenic processes favoring the fixation of iron-humus films on skeletal grains in the sandy soils of tundra cenoses. In the organic cryometamorphic soils, the illuviation of Al-Fe-humus compounds with the formation of bleached skeletans in the upper part of the mineral horizon was identified. The eluvial-illuvial differentiation of the soil mass diagnosed by the analyses of intraped mass was weakly pronounced. The features attributed to the activity of cryogenic processes were also described in these soils. Iron-illuvial svetlozems were characterized by the migration of iron compounds within the microprofile of podzol in the topsoil and by the specific well-structured cryometamorphic horizons in the lower part of the profile. The features inherited from the previous stages of soil development were identified in these soils.

Rusanova, G. V.; Deneva, S. V.; Shakhtarova, O. V.

2015-02-01

456

Evaluating the importance of surface soil contributions to reservoir sediment in alpine environments: a combined modelling and fingerprinting approach in the Posets-Maladeta Natural Park  

NASA Astrophysics Data System (ADS)

Soil in alpine environments plays a key role in the development of ecosystem. Identify, maintain and preserve its resources, as well as recognize processes that would affect them are important and of practical interest. Environmental concerns about these fragile systems which are threatened by the human pressure and climatic change have stressed the need to gather information in soil erosion processes. As most mountain alpine environment the Benasque catchment is characterized by temperatures below freezing that can last from November to April, strong rainfall events and rugged topography. Indirect studies, such as combined model approaches, could be an alternative to evaluate soil erosion on these areas. In this study the complementary tools of Soil and Water Assessment Tool (SWAT) and fingerprinting procedure were used to assess an initial approach on soil erosion processes which take place in the area of the Posets-Maladeta National Park (Central Spanish Pyrenees). Soil erosion rates and sediment contribution of potential sediment sources (Kastanozem/Phaeozem; Fluvisol; Cambisol and channel bed sediments) were assessed. SWAT model identified Cambisols as the main source of sediment of the Benasque catchment with the highest specific sediment yields and Phaeozems and Fluvisols were identified as the lowest sediment contributors. Spring and winter performed the highest and lowest specific sediment yield, respectively. Fingerprinting procedure identified channel bed sediment and Fluvisols as the main sediment sources indicating the main influence of connectivity. The combined approach enabled us to better understand soil erosion processes in the Benasque alpine catchment.

Palaz髇, L.; Gaspar, L.; Latorre, B.; Blake, W.; Navas, A.

2014-05-01

457

Effects of Fe oxide on N transformations in subtropical acid soils.  

PubMed

Subtropical ecosystems are often characterized by high N cycling rates, but net nitrification rates are often low in subtropical acid soils. NO3(-)-N immobilization into organic N may be a contributing factor to understand the observed low net nitrification rates in these acid soils. The effects of Fe oxide and organic matter on soil N transformations were evaluated using a (15)N tracing study. Soil net nitrification was low for highly acidic yellow soil (Ferralsols), but gross ammonia oxidation was 7 times higher than net nitrification. In weakly acidic purple soil (Cambisols), net nitrification was 8 times higher than in Ferralsols. The addition of 5% Fe oxide to Cambisols, reduced the net nitrification rate to a negative rate, while NO3(-)-N immobilization rate increased 8 fold. NO3(-)-N immobilization was also observed in Ferralsols which contained high Fe oxides levels. A possible mechanism for these reactions could be stimulation of NO3(-)-N immobilization by Fe oxide which promoted the abiotic formation of nitrogenous polymers, suggesting that the absence of net nitrification in some highly acid soils may be due to high rates of NO3(-)-N immobilization caused by high Fe oxide content rather than a low pH. PMID:25722059

Jiang, Xianjun; Xin, Xiaoping; Li, Shiwei; Zhou, Junchao; Zhu, Tongbin; M黮ler, Christopher; Cai, Zucong; Wright, Alan L

2015-01-01

458

Using the dye tracer for visualization of preferential flow in macro and micro-scale  

NASA Astrophysics Data System (ADS)

Study is focused on the visualization of the preferential flow in different soil types and their horizons using the dye tracer experiment. Study was performed in the Haplic Luvisol in Hn?v?eves and the Haplic Cambisol in Humpolec in the Czech Republic. The 100 (Haplic Luvisol) and 50 (Haplic Cambisol) liters of solute of dye Brilliant Blue FCF (5g/litr) was infiltrated on a 1 x 1 m plot (applying an initial ponding depth of 10 and 5 cm, respectively) immediately after the wheat harvest. On the next day, one half of the plot was sliced horizontally and another half vertically to study the dye distribution within the soil profile to the depth of 100 cm (macro-scale). The 3-D image of the dye distribution was created. In addition, the thin soil sections were made and micromorphological images were used to study a soil aggregate structure and dye distribution in micro-scale. The staining patterns within the vertical and horizontal sections documented very different nature of the preferential flow in different soil types and also within the soil profiles. Images of the Haplic Luvisol showed that while dye tracer was partly regularly transported and only some isolated domains were visible in the surface Ap1 horizon, the preferential flow occurred in the subsurface horizons. The preferential flow in the upper subsurface Ap2 horizon (plow pan) was caused by the gravitational biopores in the very compact matrix structure, which considerably slowed down the dye transport. In the case of deeper horizons (Bt1 and Bt2), the preferential flow occurred due to the gravitational biopores and extensively developed prismatic structure (small and very large aggregates in the Bt1 and Bt2 horizon respectively), which was highly affected by clay coatings. Even better characterization of the preferential flow particularly in these two horizons was obtained, when the same ponding dye infiltration experiment was performed directly on the top of the Bt1 horizon. Images of the Haplic Cambisol showed that the dye tracer transport in the Haplic Cambisol was in all horizons (Ap, Bw, C) mainly affected by the preferential flow caused by the gravitational fractures and biopores. The micromorphological images of the Haplic Luvisol soil samples showed higher-order aggregates of the Ap1 horizon, dense structure of the Ap2 horizon, well-developed soil structure affected by clay coatings of the Bt1 horizon and isolated pores with clay coatings inside the large aggregates of the Bt2 horizons. Aggregates in all horizons (Ap, Bw, C) of the Haplic Cambisol were poorly developed. The pore system did not show intrapedal or interpedal pores, pores were developed mainly along gravel particles. Correspondingly to the different soil structure compositions, dye tracer was differently distributed in the soil. Images did not show a regular dye distribution. It was evident that the dye was primarily distributed either in the interagregate pores and then in the pores inside the aggregates, or in the isolated large pores connected to the dye source and then into the matrix pores. Accumulated organic matter, clay coating, larger soil grains and isolated larger capillary pores, which initially did not contain the dye tracer, behaved as less-permeable or impermeable barriers. Acknowledgement: Authors acknowledge the financial support of the Grant Agency of the Czech Republic (grant No. GA CR 526/08/0434) and the Ministry of Education, Youth and Sports of the Czech Republic (grants No. 2B06095 and No. MSM 6046070901). Authors also acknowledge H.H. Gerke for his help in the field and valuable discussions.

Kodesova, Radka; Nemecek, Karel; Kodes, Vit; Fer, Miroslav; Jirku, Veronika; Nikodem, Antonin; Zigova, Anna; Jaksik, Ondrej; Kocarek, Martin

2010-05-01

459

CREATIVIDAD EN EL SERVICIO DE ATENCI覰 AL CLIENTE. ESTRATEGIAS BASADAS EN EL ESTUDIO DE JACK MORTON WORLDWIDE SOBRE LA APLICACI覰 DEL NEUROMARKETING MEDIANTE EL MARKETING EXPERIMENTAL  

Microsoft Academic Search

The present document contains information about the application of the Neuromarketing in the world of the businesses, mainly how it influences in the service of attention the client of the companies, since it is oriented to take care of it of more efficient way, by means of the total satisfaction of his expectations and perceptions. Also some studies that has

Pedro Espino Vargas

460

SABER CIENT虵ICO E CONHECIMENTO ESPONT翹EO: OPINI誆S DE ALUNOS DO ENSINO M蒁IO SOBRE TRANSG蔔ICOS Scientific and spontaneous knowledge: High School students' opinions on transgenics  

Microsoft Academic Search

This research investigates the knowledge that High School students have on transgenics and their opinions on the application and implications of this type of biotechnology. Questionnaires were given to one hundred final year High School students in three government schools in the northwestern region of the state of Paran, Brazil. Answers were grouped according to the students' knowledge of the

Vanessa Daiana Pedrancini; Maria J鷏ia Corazza-Nunes

461

Entre el juego y violencia Un estudio de caso sobre la agresin entre los jvenes de las "barras bravas" de Bogot  

E-print Network

etnogr醘ico que desarroll con los j髒enes hinchas de los equipos de futbol de Bogot (Colombia) durante los conflicto. Palabras clave: Identidad juvenil, masculinidad, violencia, barras bravas, futbol. 1 Esta futbol, quienes pasan de ser simples asistentes a ser organizaciones de j髒enes reconocidas por la

Paris-Sud XI, Universit de

462

Mobilidades: um novo direito s cidades/metrpoles? Redes de transporte e produo do espao urbano: Tours e Salvador sobre novos trilhos  

E-print Network

Tema Mobilidades: um novo direito 鄐 cidades/metr髉oles? T韙ulo Redes de transporte e produ玢o do in "Di醠ogos Brasil Fran鏰 2012 Construir a metr髉ole contempor鈔ea, Sao Paulo : Brazil (2012)" #12;Redes de que qualquer espa鏾 pode ser analisado e concebido considerando-o como um lugar, como uma rede ou como

Paris-Sud XI, Universit de

463

Catalysts for Change: Three Case Studies of Quality Education Worldwide = Catalizadores del Cambio: Tres Casos de Estudio sobre la Educacion de Calidad en el Mundo  

ERIC Educational Resources Information Center

Public education is the cornerstone of democracy and is absolutely fundamental to a democratic, civil and prosperous society. Beyond the boundaries of the United States, other countries are working to provide quality education to their children through civil society institutions. In particular, there are three extraordinary organizations in Peru,

Puriefoy, Wendy D.

2007-01-01

464

Feedback Cheerleader, Mean-Spirited Feedback Estudio Critico Discursivo De Ideologias Sobre El Feedback Escrito En Un Departamento Universitario De Espanol En Estados Unidos  

ERIC Educational Resources Information Center

The aim of this research is to investigate ideologies that monitor and control styles of written feedback as well as discursive resources used in the expression of those ideologies. Using socio-cognitive analysis, a development of critical discourse studies, I have analyzed 44 sessions of chat on the Internet, 78 journal notes, 31 emails and 12

Dominguez-Mujica, Maria Eugenia

2012-01-01

465

Efectos de la coadministraci髇 de gammahidroxibutirato (GHB) y L-741,741, un antagonista selectivo de los receptores dopamin閞gicos D4, sobre la conducta agon韘tica en ratones machos  

Microsoft Academic Search

Effects of coadministration of gammahydroxybutyrate (GHB) and L-741,741, a selective D4 dopami- ne receptor antagonist, on agonistic behaviour in male mice. In previous studies, it has been described a potentiation of the antiaggressive effect after coadministration of gammahydroxybutyrate (GHB) and tiapride, indicating the exisence of an interaction between GHB and D2 dopamine receptors. The aim of this study was to

Gema Luna; Carmen Pedraza; Jos Francisco Navarro

466

EVOLUCI覰 DEL CONOCIMIENTO SOBRE LA ENFERMEDAD DE LA DIARREA VIRAL BOVINA Y SU AGENTE ETIOL覩ICO EVOLUTION OF THE UNDERSTANDING OF BOVINE VIRAL DIARRHEA AND ITS ETIOLOGICAL A GENT  

Microsoft Academic Search

The bovine viral diarrhea (BVD), an enzootic disease in the world cattle population, has a tremendous economic impact due to its effect on reproductive failure and health of cows. The economic losses observed since its emergence in the '40s and the interesting biology of this virus had prompt an intensive research on the epidemiology, physiopathology and molecular biology of the

467

Hasta que punto los latinoamericanos conf'ian y cooperan? Experimentos de campo sobre exclusi髇 social en seis pa韘es de Am閞ica Latina  

Microsoft Academic Search

Este documento investiga hasta que punto las personas conf韆n, reciprocan, cooperan y comparten riesgos. El estudio se llev a cabo en seis ciudades de Am閞ica Latina aplicando una serie de experimentos de campo que inclu韆n el juego de confianza, el mecanismo de contribuciones voluntarias y tres juegos de riesgo compartido. Los resultados sugieren que: (i) en promedio, la propensi髇 de

Alberto Chong; Hugo 裲po; Juan Camilo Cardenas

2008-01-01

468

Uso de los Datos de Biomonitoreo para Informar sobre la Evaluacion Infantil (American translation is: USING BIOMONITORING DATA TO INFORM EXPOSURE ASSESSMENT IN CHILDREN)  

EPA Science Inventory

Discussing the challenges associated with estimating and interpreting toxicant exposures and health risks from biomonitoring data. This extended abstract was translated in Spanish and published in Acta Toxicologica Argentina....

469

Influ阯cia da geometria de aquisicc鉶 sobre 'indices de vegetacc鉶 e estimativas de iaf com dados MODIS, Hyperion e simulacc鮡s PROSAIL para a soja  

Microsoft Academic Search

INFLUENCE OF DATA ACQUISITION GEOMETRY ON VEGETATION INDICES AND LAI ESTIMATES WITH MODIS, HYPERION AND PROSAIL SIMULATIONS FOR SOYBEAN ABSTRACT In order to reduce cloud cover effects on the acquisition of optical images, the temporal resolution of the satellites can be improved by using large swath width sensors such as the Moderate Resolution Imaging Spectroradiometer (MODIS). MODIS acquires data over

Fabio Marcelo Breunig

2011-01-01

470

Simposio sobre Educacion de Ninas: Evidencias, Temas, Acciones. Actas de sesiones. (Symposium on Girls Education: Evidence, Issues, Actions. Proceedings). (Washington, DC, May 17-18, 2000).  

ERIC Educational Resources Information Center

This symposium highlighted core issues of controversy in girls' education and developed implications for policy and practice. Its evidence-based discussion forum encouraged dialogue, debate, and increased interaction and developed partnerships among academic institutions, nongovernmental organizations, multilateral development agencies, and other

Agency for International Development (IDCA), Washington, DC.

471

Guia para la Ensenanza Combinada de Ingles y Ciencia. Para Padres/sobre Padres. (A Guide to Teaching English and Science Together. For Parents/about Parents).  

ERIC Educational Resources Information Center

In the past, students who knew only a little English (called limited English proficient, or LEP), were usually taught only low-level science and mathematics. Now, new science and mathematics teaching methods can help LEP students get a good education in both fields. This guide will help parents know if their children are learning as much as

Schwartz, Wendy

472

NUEVAS T蒀NICAS DE PRODUCCI覰 MASIVA SISTEMATIZADA DE LA BROCA DEL CAF, HYPOTHENEMUS HAMPEI (COLEOPTERA: SCOLYTIDAE) SOBRE LA DIETA ARTIFICIAL CENIBROCA MODIFICADA  

Technology Transfer Automated Retrieval System (TEKTRAN)

An automated system for the mass rearing of coffee berry borer (CBB), Hypothenemus hampei (Ferrari) was developed at the National Biological Control Laboratory, USDA-ARS in the United States. A modified Cenibroca artificial diet consisting of coffee, agar, casein, yeast, inhibitors, vitamins and pre...

473

Dise駉 de un programa de base de datos para el seguimiento de pacientes, aplicando el Real Decreto 1566\\/1998 sobre control de calidad en radioterapia  

Microsoft Academic Search

Resumen\\u000a Introducci髇牋En julio de 1999, siguiendo el Real Decreto 1566\\/1998 y las normas ISO 9002, fue dise馻do un programa inform醫ico para analizar\\u000a anualmente toxicidad, control de la enfermedad y supervivencia.\\u000a \\u000a \\u000a \\u000a Material y m閠odos牋Se analizaron un total de 2.192 pacientes tratados en el Servicio de Oncolog韆 Radioter醦ica hasta mayo de 2005. El 51,8%\\u000a de los pacientes fueron estadios iniciales y el

Jos L髉ez Torrecilla; Desamparados Gonz醠ez Sanchis; Ana Hern醤dez Machancoses; Piedad Almendros Blanco; Enrique Garc韆 Miragall; Eugenio L髉ez Taberner

2004-01-01

474

Consideraciones sobre la investigacion hermeneutica en la educacion en lenguas y culturas extranjeras (Aspects of Applying a Hermeneutic Approach to Foreign Language and Culture Education).  

ERIC Educational Resources Information Center

Drawing on writings by recent post-modernist thinkers and semioticians, this paper focuses on a combination of hermeneutic and semiotic viewpoints and applies them to defining the nature of interpretation in an educational setting (e.g., text interpretation), the interpreter, and the essence of the act of comprehension and interpretation. The main

Zoreda, Margaret Lee

475

Cren鏰s e Pr醫icas de M鉫s sobre o Desenvolvimento Infantil nos Contextos Rural e Urbano Mothers' Beliefs and Practices about Child Development in Rural and Urban Contexts  

Microsoft Academic Search

The purpose of this study was to investigate the correlation of the beliefs and practices of maternal care in rural and urban contexts in the city of Itaja, SC. Seventy-seven mothers were asked to participate in the study by filling in a questionnaire. The following points were observed through the analysis of the results: Urban moth- ers with high educational

Ana Paul; Ribeiro Kobarg; Mauro Luis Vieira

476

Facts, Approaches, and Reflections on Classification in the History of Argentine Librarianship Hechos, Enfoques y Reflexiones Sobre la Clasificaci髇 en la Historia de la Bibliotecolog韆 Argentina  

Microsoft Academic Search

Argentine library science literature reflects a diverse interest in the subject organization of library collections. Early writings looked at the need to organize one library in particular (the National Library methodical catalog of 1893); and, therefore, the central issue was the adoption of a practical model of library organization. However, the twentieth century inaugurated the era of library studies in

Elsa E. Barber; Nicol醩 M. Tripaldi; Silvia L. Pisano

2002-01-01

477

Este encuentro internacional pretende proponer, a nivel de Europa occidental, un debate sobre cuestiones relacionadas con la arquitectura funeraria y la  

E-print Network

cuestiones relacionadas con la arquitectura funeraria y la gesti髇 de los conjuntos sepulcrales-14 ARQUITECTURAS FUNERARIAS Y MEMORIA: LA GESTI覰 DE LAS NECR覲OLIS EN EUROPA OCCIDENTAL(SIGLOS X-III a.C.) ARQUITECTURAS FUNERARIAS Y MEMORIA: LA GESTI覰 DE LAS NECR覲OLIS EN EUROPA OCCIDENTAL (SIGLOS X-III a

Escolano, Francisco

478

Ple 22 de juliol de 2014 6.1.1. INFORMACI SOBRE L'ANLISI I LA VALORACI DE LES NOVES  

E-print Network

proposa aprovar M鄐ters amb atribucions M鄐ter Universitari en Arquitectura (itineraris ETSAB i ETSAV. M鄐ter Barcelona-Arquitectura en Estudis Avan鏰ts d'Arquitectura (nom pendent de confirmar) (ETSAB), que fusiona els m鄐ters seg黣nts MU d'Arquitectura, Energia i Medi Ambient, MU en Gesti i Valoraci Urbana

Yannuzzi Sanchez, Marcelo

479

EFFECTS OF CORN MEAL AND SULPHURIC ACID ON THE PRODUCTION OF CACHA茿 Efeitos do fub e 醕ido sulf鷕ico sobre a produ玢o de cacha鏰  

Microsoft Academic Search

This work was carried out to evaluate the effects of using corn meal and treating yeasts with sulfuric acid on fermentation microorganisms, wine acidity, ethanol content and cacha鏰 yield and composition. The experiment was arranged in randomized block design, in a 2x3 factorial with five replications. The methods applied in this study are recommended by distilleries. Results showed that the

Francisco Vicente Gaiotto Cleto; Gisele Cristina Ravaneli; M醨cia Justino; Rossini Mutton

480

A MOBILIZA敲O DE SABERES CONCEITUAIS E INTEGRA- DORES SOBRE PRODU敲O TEXTUAL NA FORMA敲O DE PROFESSORES DE L蚇GUA PORTUGUESA: uma amostra de antropologia escolar  

Microsoft Academic Search

This article has the object to display a research work on the of knowledge mobilization -conceptual and integrated- on the textual production and its teaching by teacher aprenticeships of Portuguese Language of third and fourth course (denominated 6 and 7 per韔dos) of the Faculty of Letters of the Universidade do Vale do Itaja, Santa Catarina, Brazil, acting in activities of

Jeanete Terezinha de Souza; B醨bara Kristensen

481

LA NANOTECNOLOG虯 Y LA GNR COMO NUEVO PARADIGMA CIENT虵ICO: EL MODELO MECANICORGANISCISTA. UNA PERSPECTIVA MATERIALISTA SOBRE LA FILOSOF虯 DE LA MENTE  

Microsoft Academic Search

A new paradigm, which already found an intuitive formulation in S. Butler, and which has developed with the Theory of automata of Von Neumann and the Cybernetics of Wiener, is consolidated in the present days due to the progress of the nanotechnology. The GNR, from a multidisciplinary approach, gives us a new instrument of scientific observation and the same time

Sergio Jim閚ez Cruz

482

[The EMECAM project: a discussion of the results in the participating cities. Estudio Multic閚trico Espa駉l sobre la Relaci髇 entre la Contaminaci髇 Atmosf閞ica y la Mortalidad].  

PubMed

This article draws a comparison and provides a discussion of the findings resulting from the local analyses of the 14 cities participating in the EMECAM Project. An analysis is made of the time series related to mortality, pollutants (particles in suspension, SO2, NO2, O3 and CO), temperature and other factors taken from records of public institutions. By using Poisson autoregressive regression, an estimate has been made of the short-term relationship between the number of deaths and the air pollution indicators in each one of the following cities: Barcelona, metropolitan area of Bilbao, Cartagena, Castell髇, Gij髇, Huelva, Madrid, Pamplona, Seville, Oviedo, Valencia, Vigo, Vitoria and Saragossa. The findings reveal the air pollution figures in our country to be similar to those of other European cities. The levels of the different pollutants point toward road traffic as being the main source of most of this pollution. A relationship has been found between the mortality and different pollutants in most cities, although the results are not homogeneous among the cities and show variability in the different causes under study. In some cities, especially in those having smaller populations, there have been no findings providing any evidence of a relationship, or the findings themselves are not highly consistent. The meta-analysis will provide estimates for all of the cities as a whole and will allow the possibility of making a more clear-cut assessment of the time lag impact of air pollution on the mortality. Worthy of special mention is the participation in this project of public health officers as actively involved researchers. PMID:10410614

Ballester D韊z, F; S醗z Zafra, M; P閞ez-Hoyos, S; Daponte Codina, A; Bellido Blasco, J B; Ca馻da Mart韓ez, A; Abad D韊z, J M; P閞ez Bo韑los, M J; Alonso Fustel, M E; Taracido Trunk, M; Aguinaga Ontoso, I; Guill閚 P閞ez, J J; Ord篑ez Iriarte, J M; Saurina Canals, C; Ten韆s Burillo, J M

1999-01-01

483

Estudio ecol骻ico en M閤ico (2003-2009) sobre labio y\\/o paladar hendido y factores sociodemogr醘icos, socioecon髆icos y de contaminaci髇 asociados  

Microsoft Academic Search

ObjectiveTo analyze the rates of cleft lip and\\/or cleft palate (CLP) in Mexico between 2003 and 2009 and assess their association with variables at ecological level, sociodemographic, socioeconomic, and pollution.

C. A. Gonz醠ez-Osorio; C. E. Medina-Sol韘; A. P. Pontigo-Loyola; J. F. Casanova-Rosado; M. Escoffi-Ram韗ez; M. G. Corona-Tabares; G. Maupom

2011-01-01

484

Mem髍ias sobre o feminismo na psicologia: para a constru玢o de mem髍ias futuras Memories about feminism in psychology: for the construction of future memories  

Microsoft Academic Search

Throughout the years, psychology has established itself as a privileged forum for the study of differences between men and women, sustained by explanations that go from biology to gender relations of power. In psychology, for a clear understanding of gender studies and feminist approaches, it is necessary to organize the achieved production in chronological stages. With this aim in mind,

Lu韘a Saavedra; Concei玢o Nogueira

485

Reuni髇 de Consenso sobre la biopsia selectiva del ganglio centinela en el c醤cer de mama. Sociedad Espa駉la de Senolog韆 y Patolog韆 Mamaria  

Microsoft Academic Search

Selective biopsy of the sentinel node is a useful diagnostic technique in the management of breast cancer that has been introduced into the clinical practice and is widely used and accepted. Based on its results, adequate staging can be made with less associated morbidity. However, at present, there are many methodological variations in how it is done that are pending

A. Pi馿ro; J. Gim閚ez; B. Merck; C. V醶quez

2007-01-01

486

International Work Group for Indigenous Affairs Newsletter, July 1991-December 1992 = Boletin de Grupo Internacional de Trabajo sobre Asuntos Indigenas, Septiembre 1991-Diciembre 1992.  

ERIC Educational Resources Information Center

This document contains seven consecutive English-language issues of the IWGIA Newsletter, from July 1991 through December 1992, followed by the seven corresponding issues in Spanish. These newsletters provide educators with a resource on the history, current conditions, and struggles for self-determination of indigenous peoples around the world.

IWGIA Newsletter, 1992

1992-01-01

487

Efeito dos tratamentos silviculturais sobre a deforma玢o residual longitudinal em clones de Eucalyptus Effect of forestry treats on the growth stresses in Eucalyptus  

Microsoft Academic Search

The objective of this paper was to verify the spacing and age influence in the longitudinal residual strain (DRL) in clones of Eucalyptus associated to the growth stresses. The material was collected at Vazante and Paracatu regions, Northwest of Minas Gerais State, Brazil. An extensometer CIRAD-For阾 was used for determining the DRL. Two experiments were evaluated: the first one with

Antonio Am閞ico; Cardoso J鷑ior; Paulo Fernando Trugilho; Sebasti鉶 Carlos da Silva

488

Alto contenido de 醕ido linoleico conjugado (CLA) en leche y productos derivados al incorporar semillas de girasol a la dieta vacuna. Implicaciones sobre el riesgo trombo\\/aterog閚ico  

Microsoft Academic Search

RESUMEN. Con la finalidad de determinar el perfil de 醕idos grasos y la composici髇 qu韒ica de productos l醕teos enriquecidos con 醕ido linoleico conjugado (CLA) de manera natural, se elaboraron crema, mantequilla y grasa but韗ica con leche obtenida de vacas que recibieron una dieta control o suplementaci髇 con semilla de girasol en un 11.2%. El an醠isis qu韒ico incluy el perfil de

Eryck R. Silva Hern醤dez; Rosa Guadalupe; Herrera Lee; Takuo Nakano; Lech Ozimek; I駃go Verdalet Guzm醤

489

AN罫ISIS DEL IMPACTO DE LAS NORMAS INTERNACIONALES DE CONTABILIDAD SOBRE EL PATRIMONIO NETO Y RESULTADO DE LOS GRUPOS NO FINANCIEROS DEL IBEX35  

Microsoft Academic Search

The Economic European Area decided to require public groups to prepare their financial statements under IFRS covering periods beginning on or after January 1, 2005. The Spanish experience with the implementation of IFRS in consolidated financial statements has been very positive, but it is necessary to investigate in detail the impact of this historic process. In this paper, we have

Alvarado Riquelme; M. Ampudia Fern醤dez; J. M. Prado Rom醤; Juan Carlos

490

Efeito da densidade de estocagem sobre o biofilme e o desempenho de p髎-larvas do camar鉶-rosa FarfantePenaeus paulensis cultivadas em gaiolas  

Microsoft Academic Search

The aim of this study was to analyze the influence of the stocking density in the survival and growth of Farfantepenaeus paulensis postlarvae reared in cages during the nursery phase. Additionally, we identified and quantified the main microorganisms present on the biofilm formed on artificial substrates placed inside the cages. We used 4 m2 bottom surface cages with artificial substrates

Artur de Lima Preto; Ronaldo Cavalli; Tito Pissetti; Paulo C閟ar Abreu; Wilson Wasielesky J鷑ior

2005-01-01

491

Pick and Choose: A Videotape Series on Nutrition for Migrant Families (Coja y Escoja: Peliculas para Television Sobre la Nutricion para las Familias Migratorias).  

ERIC Educational Resources Information Center

One of the major problems faced by migrant workers throughout the United States is a lack of awareness of the relationship between proper diet and an individual's general health and well being. To help solve this problem was the major objective of the series "Pick and Choose." The three 15-minute programs in the series present information related

1979

492

SOCIALIZA敲O DO CONHECIMENTO SOBRE CRIA敲O DE ABELHAS EM COMUNIDADE DE AGRICULTURA FAMILIAR SOCIALIZATION OF KNOWLEDGE USING BEEKEEPING IN COMMUNITY OF FAMILY AGRICULTURE  

Microsoft Academic Search

For pressing political actions it might be profitable to establish and to test sustainable projects for protecting natural resources and human communities who depends on them. As a goal to protect the Atlantic Rainforest and its tradicional familiar agriculture, this article presents the experiences about the relationships of the two rural communities when stingless beekeeping was promoted. In order to

Maria Cristina Affonso Lorenzon; Carina de Oliveira; Maria Duringer Lima

493

Estudio sobre las implicaciones de la psicopatolog韆 parental, la transmisi髇 intergeneracional y el abuso de sustancias t髕icas en el maltrato infantil  

Microsoft Academic Search

Currently, programs and projects of child protection and attention confront the difficult task of providing solutions to each case of abuse without having certainty about the causes of each typology of child abuse. The aim of this article is to describe and interpret the results

Juan Manuel Moreno Manso

2005-01-01

494

Efecto de la fertilizaci髇 nitrogenada sobre el rendimiento y calidad de semilla de pasto guinea Effect of nitrogen fertilization on Guinea grass seed yield and quality  

Microsoft Academic Search

The objective of the present study was to assess the effect of nitrogen fertilization on Guinea Grass (Panicum maximum Jacq.) cv. Tanzania seed yield and quality. The experiment was carried out under rainfall conditions in 2001 in Tejupilco, State of M閤ico, Mexico, (18 54' N, 100 08' W; 1,320 m asl). Treatments were five Nitrogen doses (0, 50, 100, 150

Alfonso Hern醤dez

495

ALCHEMIST (Estudios sobre la Secuenciaci髇 e Identificaci髇 de Marcadores para el Mejoramiento de la Terapia Adjuvante para el C醤cer de Pulm髇): Preguntas y respuestas  

Cancer.gov

ALCHEMIST comprende tres estudios cl韓icos integrados de medicina de precisi髇 dise馻dos para identificar a personas con c醤cer de pulm髇 en estadio inicial cuyos tumores tienen ciertos cambios gen閠icos poco comunes. Tambi閚 buscan evaluar si los tratamientos con medicamentos que combaten esos cambios moleculares pueden mejorar la supervivencia

496

FACTORES QUE INFLUYEN SOBRE LA EMERGENCIA DE PL罭TULAS DE BORRAJA (BORAGO OFFICINALIS L.) FACTORS INFLUENCING BORAGE (BORAGO OFFICINALIS L.) SEEDLING EMERGENCE  

Microsoft Academic Search

Background: Borago officinalis L. seeds and the whole plant are used as medicinal plants. Gamma linolenic acid, an important essential fatty acid from the omega-6 family is present in its seeds. Objectives: To analyze the effect of the seeding depth, seed maturity, germination promoters, and\\/or stratification on the emergence percentage, vigor index and time to reach a 50% emergence were

Alejandro Sol韘; Rosemarie Wilckens; Maritza Tapia; Susana Fischer; Daniel Sorlino; Marisol Berti

497

Documento de consenso sobre la evaluaci髇 y el tratamiento de la psoriasis moderada\\/grave del Grupo Espa駉l de Psoriasis* de la Academia Espa駉la de Dermatolog韆 y Venereolog韆  

Microsoft Academic Search

The treatment of psoriasis has been revolutionized by the introduction of biologic agents; these agents achieve skin clearance and long-term improvement without the risk of toxicity that has limited use of the classic systemic treatments. The role of systemic treatment in the management of psoriasis is being reviewed on the basis of a large volume of scientific evidence on the

L. Puig; X. Bordas; J. M. Carrascosa; E. Daud閚; C. Ferr醤diz; J. M. Hernanz; J. L. L髉ez-Estebaranz; J. C. Moreno; J. L. S醤chez-Carazo; F. Vanaclocha; H. V醶quez-Veiga

2009-01-01

498

Borrowing Basics. FDIC Money Smart Financial Education Curriculum = Conceptos Basicos sobre Prestamos. FDIC Money Smart Plan de Educacion para Capacitacion en Finanzas.  

ERIC Educational Resources Information Center

This module, an introduction to credit, is one of ten in the Money Smart curriculum, and includes an instructor guide and a take-home guide. It was developed to help adults outside the financial mainstream enhance their money skills and create positive banking relationships. It is designed to enable participants to decide when and how to use

Federal Deposit Insurance Corp., Washington, DC.

499

Regulando la Enfermedad a trav閟 de la Definici髇 y la Restricci髇: Profesionales de la Salud Hablan sobre el VIH/SIDA1  

PubMed Central

Resumen Las profesiones de la salud tienen un papel social dual. Por un lado, velan por el mantenimiento de la salud de la poblaci髇 protegiendo el bien com鷑. Por el otro, dictaminan las formas saludables, y por lo tanto socialmente apropiadas, de ser, actuar y pensar. Este 鷏timo papel, est m醩 ligado al control social de la poblaci髇 que a una preocupaci髇 altruista hacia la misma. A trav閟 de esta supervisi髇 y control, se construyen los sujetos a los cuales todos/as debemos aspirar a ser para gozar de aceptaci髇 social. Los/as profesionales de la salud han jugado un rol protag髇ico en dicho proceso, siendo los agentes que delimitan y definen lo que es enfermo vs. saludable, 鷗il vs. in鷗il, apropiado vs. inapropiado. En el caso de la epidemia del VIH, este esfuerzo se ha hecho cada vez m醩 vigente ya que estos/as profesionales juegan un papel importante en el tratamiento de las personas que viven con VIH/SIDA (PVVS). Sin embargo, su funci髇 est plasmada de definiciones que sirven para criminalizar a las PVVS. El objetivo de este estudio fue explorar la manera en que una muestra de profesionales de la salud en Puerto Rico construyen a las PVVS. Con este prop髎ito, entrevistamos 80 profesionales de la salud y estudiantes de estas profesiones. Estas entrevistas fueron grabadas, transcritas y sometidas a un an醠isis de discurso. Los resultados reflejaron que seg鷑 las personas participantes: 1) la PVVS no es una persona 搉ormal o funcional bajo los est醤dares sociales debido a que su salud no se los permite, 2) representa una carga para la sociedad incluyendo familiares, amigos/as, el mundo del trabajo, e incluso para el gobierno, 3) debe ser vigilada porque representa un riesgo para la persona seronegativa que es descrita como saludable y productiva, y 4) necesita que su salud y conducta sexual sean controladas por v韆 legal y/o por las personas que representan las instituciones sociales, como lo son los/as profesionales de la salud. En este art韈ulo abordamos el potencial rol de la psicolog韆 para servir como veh韈ulo de reconstrucci髇 de dichas nociones, tomando en consideraci髇 su propio rol en la formaci髇 y mantenimiento de dicho sujeto socialmente deseable. PMID:22025907

Rivera, Souhail Malav; D韆z, Nelson Varas

2009-01-01

500

El Fenomeno de Maduracion de Ostwald. Predicciones de las Simulaciones de Estabilidad de Emulsiones sobre la Evolucion del Radio Cubico Promedio de una Dispersion de Aceite en Agua  

E-print Network

In this chapter, the theory of Lifshitz, Slesov and Wagner and the technique of Emulsion Stability Simulations (ESS) are reviewed. Complementary algorithms required to incorporate the phenomenon of Ostwald ripening in ESS are presented. The simulations are used to study the behavior of dodecane-in-water nanoemulsions as a function of time. The influence of electrostatic interactions, hydration forces, the initial drop size distributions, and the deformability of the drops, are studied. In particular, the behavior of the cube average radius of the dispersion and the variation of the drop size distribution a few minutes after the preparation of the emulsion are described.

German Urbina-Villalba

2014-10-09