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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



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


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



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



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



E-print Network

encharcamiento del suelo y balance de agua durante un hietograma de lluvia natural. El modelo se contrasta se estudia la extensi贸n de la ecuaci贸n de Green-Ampt para la infiltraci贸n de agua en presencia de un nivel fre谩tico somero estable bajo condiciones de lluvia natural, y su efecto sobre la redistribuci贸n de

Boyer, Edmond



Microsoft Academic Search

Se detennino el efecto de hacer el desle- Cultural practices to control of mango chado de frutos de mango en el suelo y sobre una stem-end rot caused by Botryodiplodia theo- lamina de hierro galvanizado (lamina de zinc), bromaes Pat. The following practices were eva- eliminando 0 dejando el pedunculo para ambos luated for the control of stem-end rot of

Eugenia Gonzalez; Gerardina Umana; Luis Felipe Arauz


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.  


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



Variation of the stability of complexes of Al(III) with a fulvic acid extracted from a humic cambisol soil in the pH range three to five  

SciTech Connect

The interaction of the aluminum ion [Al(III)] with the major constituent of soil organic matter, fulvic acids (FA), was investigated in the acid pH range. The complexation of a FA extracted from a humic cambisol soil (at a concentration of 80 mg/L) when titrated with Al(III) were monitored directly by synchronous fluorescence (SyF) spectroscopy at five pH values (3.0, 3.5, 4.0, 4.5, and 5.0), at 25 C and with 0.1 N KNO{sub 3}. Inverted second derivative SyF data were preprocessed by a self-modeling mixture analysis method to obtain fluorescence enhancement profiles as a function of the increasing Al(III) concentration. Assuming that the concentration of complexes formed between Al(III) and FA is proportional to the fluorescence intensity, these profiles were adjusted to a 1:1 complexation model and the following conditional stability constants (log K{sub c}) were calculated (standard deviation in parenthesis), pH = 3.0, 4.3 (1); pH = 3.5, 4.3 (1); pH = 4.0, 5.0 (1); pH = 4.5, 5.1 (3); and pH = 5.0, 5.3 (2). These constants show that the stability of the complexes decreases markedly at pH < 4. The environmental implication of this result is that an increase in the extent of the dissociation of the Al(III) + FA complexes is expected at pH < 4, increasing the free Al(III) concentration and probably its ecotoxicity.

Esteves da Silva, J.C.G.; Machado, A.A.S.C. [LAQUIPAI, Porto (Portugal). Faculdade de Ciencias; Ramos, M.A.; Arce, F. [Univ. de Santiago de Compostela (Spain). Dept. de Quimica Fisica; Rey, F. [Univ. de Vigo (Spain). Dept. de Quimica Fisica



Un mercado paralelo: la producci髇 de suelo y la promoci髇 inmobiliaria en Oviedo, 1994-2002  

Microsoft Academic Search

En los dos 鷏timos a駉s la vivienda se ha convertido en un lugar com鷑 de la pol韙ica y la comunicaci髇 como consecuencia de un alza de su precio que multiplica por diez el IPC. La interpretaci髇 general apunta al solar como causa principal y la soluci髇 es liberalizar el suelo. Sin embargo, en Oviedo se observa que el volumen de

Tom醩 Cortizo 羖varez




Microsoft Academic Search

Seven years after the break of the sludge dam of the Aznalc髄lar mine, there are still spots with soils with a contaminant content as high that plants cannot germinate or thrive in them. These areas constitute a potential risk for underground aquifers. A liming assay has been carried out with increasing doses of calcium carbonate to correct the acidity in

R. Ord篑ez; P. Gonz醠ez



294 ANALES AFA Vol. 15 BARILOCHE 2003 -294 Tasa de dosis en aire debida a radionclidos depositados en suelo en condiciones  

E-print Network

realiza en forma anal铆tica utilizando el m茅todo de integraci贸n point-kernel. La movilidad vertical en el cuenta son los siguientes: la distribuci贸n vertical del contaminante en el suelo, su movilidad, la que permite introducir la movilidad vertical de la fuente en suelo. ?ste proceso de transporte

Nacional de San Luis, Universidad



Microsoft Academic Search

RESUMEN: El posible deterioro de la calidad de las aguas subterr醤eas, causado por la aplicaci髇 de lodos de depuradora a un suelo agr韈ola, es evaluado en t閞minos del incremento de la salinidad del agua de recarga y de su contenido en nutrientes. Para ello, se obtuvieron las curvas de lavado de cada elemento en estudio, a partir de un ensayo

M. J. Polo G髆ez; R. Ord篑ez Fern醤dez; J. V. Gir醠dez Cerveral



Microsoft Academic Search

N-Fertilization effect on two varieties of corn (Zea mays L.) affected by flooding After flood, during the vegetative stage, an N-fertilization effect was evaluated associated with the recovering of two varieties of maize Agua Blanca (AB) and La M醧uina (LM). Crop was planted in 10 kg pots and placed in a greenhouse on a completely randomized design, with three replications.

Lenny Mel閚dez; Jon Lisazo; Ricardo Ram韗ez




Microsoft Academic Search

Effect of soil fertility on microbiota and corn (Zea mays L.) growth promotion with Azotobacter spp. The study of microbial populations allows the evaluation of a soil fertility and its ecological condition. In this paper, the total and calcium phosphate solublizing culturable bacteria and fungi population densities were evaluated in the rhizosphere of wild and crop plants from five different

Isbelia Reyes; Alexis Valery




E-print Network

IX JORNADAS SOBRE DERECHO PENAL, CRIMINOLOG脥AY DERECHO PENITENCIARIO 2 CR?DITOS DE LIBRE ELECCI?N CURRICULAR PRESENTACI?N En la l铆nea seguida en ediciones anteriores, las IX Jornadas de Derecho Penal, Criminolog铆a y Derecho Penitenciario pretenden ser un foro en el que se debatan cuestiones clave que

Escolano, Francisco


Determinaci髇 de la aptitud de uso del suelo para producci髇 de cultivos con fines bioenerg閠icos en la provincia de Salta (Noroeste Argentino)  

Microsoft Academic Search

RESUMEN El presente trabajo presenta los resultados alcanzados en la determinaci髇 de la aptitud de uso del suelo para producci髇 de cultivos con fines bioenerg閠icos en la provincia de Salta (Argentina). Para este prop髎ito se busc aunar los criterios de sustentabilidad social, econ髆ica, energ閠ica y ambiental que definen el desarrollo sostenible de los sistemas bioenerg閠icos. El objetivo principal del trabajo

Ren閑 Alicia Anschau; Mar韆 Cad; Stella Carballo; Noelia Flores



Revis鉶 sistem醫ica sobre obesidade em adolescentes brasileiros  

Microsoft Academic Search

Resumo - O prop髎ito deste estudo foi revisar, de forma sistem醫ica, a literatura nacional sobre a preval阯cia e fatores associados obesidade em adolescentes. A busca foi realizada nas bases de dados Pubmed e Bireme, atrav閟 dos descritores: \\

Rafael Miranda Tassitano; Maria Cec韑ia Marinho Ten髍io; Pedro C Hallal



E-print Network


Geffner, Hector


Identificaci髇 de algunos g閚eros microbianos asociados al cultivo del ma韟 (Zea mays L.) en diferentes suelos de Cuba Identification of some microbial genera associated to the maize crop (Zea mays L) in different Cuban soils  

Microsoft Academic Search

RESUMEN Se ha demostrado que la aplicaci髇 de bioproductos a partir de microorganismos rizosf閞icos en la agricultura, provoca incrementos en la productividad de los cultivos. Si se trabaja con cepas nativas aumenta la factibilidad biol骻ica de los mismos. Esta investigaci髇 se realiz con el objetivo de determinar algunos g閚eros microbianos asociados al cultivo del ma韟 variedad Francisco mejorado en suelos

Annia Hern醤dez; Alberto Caballero; Mabel Pazos; Rolando Ram韗ez; Mayra Heydrich



Sobre os sistemas de refer阯cia celeste  

NASA Astrophysics Data System (ADS)

Apresentamos neste trabalho, algumas discuss鮡s sobre os sistemas de refer阯cia utilizados em Astronomia. Claramente, n鉶 poss韛el esgotar todo este assunto num 鷑ico texto, mas esperamos, contudo, que o presente material possa ser apreciado nos cursos de Introdu玢o Astronomia, que est鉶 cada vez mais presentes nas atuais propostas curriculares das gradua珲es de F韘ica. As discuss鮡s pertinentes 鄐 "Bases de Refer阯cia Celeste", ser鉶 apresentadas em um outro trabalho.

Poppe, P. C. R.; Martin, V. A. F.



Reflexiones sobre la 閠ica del Derecho  

Microsoft Academic Search

This presentation is part of the Conceptions of Autonomy track.\\u000aEl fen髆eno jur韉ico, en todas sus manifestaciones, contiene dos notas que son de innegable trascendencia: a) es un orden regulador o normativo, pero no s髄o eso como veremos m醩 adelante, b) versa sobre conductas, actos, comportamientos entre sujetos y sujetas. El 醡bito jur韉ico es el 醡bito de la conducta intersubjetiva,

Elida Aponte Sanchez



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




Microsoft Academic Search

El presente trabajo pretende analizar la eficacia que los Impuestos sobre la Riqueza Personal han mostrado en los 鷏timos quince a駉s en la consecuci髇 de los objetivos que tradicionalmente se les han venido asignado. Estos objetivos son: servir de complemento al IRPF, mejorar la distribuci髇 de la renta y la riqueza y ayudar en el control y gesti髇 del IRPF.

Laura de Pablos Escobar


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




Microsoft Academic Search

Seed germination was studied from three seed sizes of two corn cultivars under three irrigation intervals which produced three matric potentials. Soil moisture retention curves were determined and the fit equations of lines were estimated by regression analysis in order to calculate the fluctuation range of

Jos A. Laynez-Garsaball; Jes鷖 Rafael M閚dez Natera; Juliana Mayz-Figueroa


Alternativas a la supresi髇 del Impuesto sobre el Patrimonio  

Microsoft Academic Search

La Imposici髇 Personal sobre la Riqueza atraviesa en Espa馻 un momento cr韙ico, incluso el Impuesto sobre el Patrimonio Neto ha sido suprimido para el ejercicio 2008, argumentando en su contra su excesiva complejidad y efectos desincentivo a la entrada de inversi髇es. Realmente desde que este Impuesto se cedi a las Comunidades Aut髇omas, 鷑icamente ha interesado su potencial recaudador que, al

Laura de Pablos Escobar



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

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.


Liberaci髇\\/mineralizaci髇 de nitr骻eno en hojarasca de Eucalyptus grandis y leguminosas herb醕eas, su relaci髇 con la calidad f韘ica y qu韒ica del residuo y su efecto sobre el crecimiento de plantas j髒enes de eucalipto  

Microsoft Academic Search

Resumen El tipo de cosecha y manejo de residuos inciden en el contenido de nutrientes del suelo y la productividad forestal. Estos residuos contienen la mayor韆 del retorno de N. La velocidad de provisi髇 de nutrientes por la descomposici髇\\/mineralizaci髇 puede verse afectada por la calidad qu韒ica y f韘ica como por la localizaci髇 y contacto de los residuos con el suelo.

Alcaraz Maria Luciana


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

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.


Ensayo sobre equilibrio general computable: Teor韆 y aplicaciones  

Microsoft Academic Search

Este documento de trabajo presenta un resumen de la literatura conceptual y aplicada sobre modelos de equilibrio general computables (EGC). Se examinan las principales caracter韘ticas de los EGC, las formas en que se construyen, los datos requeridos y m閠odos de calibraci髇, as como sus ventajas y desventajas. Luego se discuten sus principales aplicaciones tanto en el mundo como en Chile.

Ra鷏 ORyan; Carlos J. de Miguel; Sebasti醤 Miller



O R E G O N Informe Final Sobre el Estudio de las  

E-print Network

WASHINGTON O R E G O N IDAHO HANFORD Resumen del Informe Final Sobre el Estudio de las Enfermedades de la Tiroides en Hanford Acerca del Estudio Sobre las Enfermedades de la Tiroides en Hanford. (HTDS por su sigla en ingl茅s) El estudio sobre las enfermedades de la tiroides en Hanford (HTDS por su sigla


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



Informaci髇 sobre el c醤cer para hispanos y latinos

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,, 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.


El Efecto De Los Atentados Del 11-s Sobre El Turismo En Espa馻  

Microsoft Academic Search

El objetivo del trabajo es analizar las consecuencias que los atentados del 11-S han tenido sobre los flujos tur韘ticos en Espa馻. El marco te髍ico utilizado se inspira en el modelo del comportamiento racional del consumidor desarrollado por Enders et al. (1992), en el se incluye el estudio de los efectos del terrorismo sobre la actividad del sector tur韘tico. El estudio




Algumas contribui珲es te髍icas do referencial psicanal韙ico para as pesquisas sobre organiza珲es  

Microsoft Academic Search

Resumo O texto tem por objetivo fazer uma reflex鉶 sobre alguns aspectos epistemol骻icos e metodol骻icos do uso do referencial psicanal韙ico em pesquisas sobre organiza珲es. A discuss鉶 busca clarificar as tens鮡s da rela玢o entre essas disciplinas, demonstrando que poss韛el uma integra玢o te髍ica. A id閕a de refer阯cia a constru玢o de di醠ogos e de complementariedades na apreens鉶 de determina- dos fen鬽enos,

Ana Magn髄ia Bezerra Mendes; Bezerra Mendes



Per: Chirapaq celebra 25 aos con un foro sobre "Derechos de los Pueblos Indgenas"  

E-print Network

Per煤: Chirapaq celebra 25 a帽os con un foro sobre "Derechos de los Pueblos Ind铆genas celebrar谩 su 25 aniversario con el foro p煤blico internacional: "Derechos de los Pueblos Ind铆genas: Avances y la Naci贸n Cree, ex parlamentario y miembro del Mecanismo de Expertos sobre los Derechos de los

Islas, Le贸n


Estudios estructurales sobre entidades tiosemicarbazonacobre(II) y su interacci髇 con polioxometalatos y biomol閏ulas: s韓tesis, estabilidad y propiedades magn閠icas.  

E-print Network

??Estudios estructurales sobre entidades tiosemicarbazonacobre(II) y su interacci髇 con polioxometalatos y biomol閏ulas. S韓tesis, estabilidad y propiedades magn閠icas? El presente Trabajo ahonda en la s韓tesis y (more)

Gil Garc韆, Rub閚



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



Informe Anual a la Naci髇 sobre el Estado del C醤cer 1975-2002 con una secci髇 especial sobre las tendencias de tratamiento: preguntas y respuestas

Las organizaciones oncol骻icas principales de la naci髇 informan que el riesgo de los estadounidenses de morir de c醤cer sigue disminuyendo y que las tasas de casos nuevos de c醤cer permanecen estables. El Informe Anual a la Naci髇 sobre el Estado del C醤cer, de 1975 a 2002, se馻la que las tasas de mortalidad de c醤cer que se observaron para todos los c醤ceres combinados disminuyeron 1,1 por ciento por a駉 de 1993 a 2002.


V SEMINARIO HISPANO-ARGENTINO: Los discursos sobre la Ciencia y las Nuevas Tecnologas en la Sociedad del Conocimiento  

E-print Network

V SEMINARIO HISPANO-ARGENTINO: Los discursos sobre la Ciencia y las Nuevas Tecnolog铆as en la Universidad Nacional del Litoral (Argentina), se centra este a帽o en los "Discursos sobre la Ciencia y las procede, esta vez centrando la atenci贸n en el discurso de la ciencia y de las nuevas tecnolog铆as. Se

Escolano, Francisco


Las IX Jornadas de Derecho penal, Derecho penitenciario y Criminologa en la UA reflexionan sobre el nuevo panorama del terrorismo  

E-print Network

Las IX Jornadas de Derecho penal, Derecho penitenciario y Criminolog铆a en la UA reflexionan sobre socio-criminol贸gica" es el tema sobre el que se centran las IX Jornadas de Derecho penal, Derecho, Jes煤s Pradells, y a la decana de la Facultad de Derecho de la UA, Amparo Navarro. Las Jornadas, que se

Escolano, Francisco


La incidencia del gasto p鷅lico en educaci髇 sobre la distribuci髇 del bienestar econ髆ico en Espa馻  

Microsoft Academic Search

Este trabajo aborda la incorporaci髇 de transferencias p鷅licas en especie en los estudios sobre la distribuci髇 de la renta y el bienestar. En particular, nos ocupamos de analizar la incidencia que tiene la inclusi髇 de la educaci髇 p鷅lica. Para ello, hemos imputado al consumo de las familias una cuantificaci髇 de la transferencia por tal servicio prestada en Espa馻 en el

David Pati駉 Rodr韌uez



Sobre as Bases de Refer阯cia Celeste (On the Celestial Reference Frames)  

NASA Astrophysics Data System (ADS)

Ao longo deste artigo, apresentamos, como continuidade discuss鉶 apresentada no trabalho anterior, uma primeira discuss鉶 sobre algumas das principais bases de refer阯cia utilizadas em Astronomia. Da mesma forma, esperamos que o presente texto possa ser utilizado ao longo dos cursos de Introdu玢o Astronomia das atuais gradua珲es de F韘ica e 醨eas afins.

Martin, Vera A. F.; Poppe, Paulo C. R.



El mercado de la energ韆 el閏trica en Colombia: caracter韘ticas, evoluci髇 e impacto sobre otros sectores  

Microsoft Academic Search

Este estudio se enmarca en el contexto de un sector el閏trico que funciona de manera adecuada, pero en una coyuntura en la que se observ un comportamiento at韕ico en los precios de energ韆 el閏trica, que abri espacio para que se presentaran discusiones v醠idas, entre industriales, gobierno y generadores de energ韆, entre otros agentes, sobre i) la eficiencia y competitividad sectoriales,

Mauricio Santa Mar韆; Nils-Henrik Von Der Fehr; Jaime Mill醤; Juan Benavides




E-print Network

REDES TRANSACIONALES: APORTES PARA LA LECTURA SOBRE EL CASO AMERICANO DE LA ALIANZA SOCIAL, espec铆ficamente en Am茅rica Latina y el Caribe. Palabras Clave: Redes transnacionales - Movimientos sociales plural: la Alianza Social Continental (ASC). En el marco del regionalismo de segunda generaci贸n, el

Paris-Sud XI, Universit茅 de



E-print Network

JORNADA SOBRE LA TRANSFORMACI?N DEL DERECHO PRIVADO ANTE LA CRISIS1 . Lugar de celebraci贸n: Sala Conde. Catedr谩tico de D. Constitucional y Director del Instituto de Derecho P煤blico. URJC. 10:00 Conferencia inaugural Prof. Dr. D. Domingo Bello Janeiro, Catedr谩tico de Derecho Civil. Universidad de

Rey Juan Carlos, Universidad


Avances sobre la influencia del tejido adiposo en el adenocarcinoma de pr髎tata  

Microsoft Academic Search

Resumen Numerosos estudios han intentado interpretar la asociaci髇 entre la obesidad y el c醤cer de pr髎tata (CaP), aunque los resultados no han sido concluyentes debido a que existe una gran dificultad para evaluar sus efectos de sobre el desarro - llo del CaP. Dicha dificultad radica en que no solo implica un exceso de grasa corporal, sino tambi閚 una alteraci髇

Constanza L髉ez Fontana; M. Eugenia Maselli Artola; M. Cristina Vanrell Rodr韌uez; Nicol醩 A. Di Milta M髇aco; Rafael P閞ez Elizalde; Jos D. L髉ez Laur



Panorama reflexivo sobre el teatro de grupo en el Per en la d閏ada del 80  

E-print Network

SPRING 1992 137 Panorama reflexivo sobre el teatro de grupo en el Per en la d閏ada del 80 Domingo Piga L Introducci髇 El desarrollo social, econ髆ico y pol韙ico del Per en los 鷏timos 25 a駉s, determin cambios fundamentales en el teatro...

Piga, Domingo



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


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



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

E-print Network

) May 2002 Major Subject: Modern Languages ABSTRACT Los discursos sobre sexualidad en la obra de Alicia Gaspar de Alba. (May 2002) Ricardo F. Vivancos Perez, Ldo. Filosofia y Letras (Filologia Inglesa), Universidad de Malaga Chair of Advisory... Alicia Gaspar de Alba. (May 2002) Ricardo F. Vivancos Perez, Ldo. Filosofia y Letras (Filologia Inglesa), Universidad de Malaga Chair of Advisory Committee: Dr. Manuel M. Martin Rodriguez En este estudio me acerco a los escritos de la poeta, cuentista...

Vivancos P?erez, Ricardo F



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

E-print Network

Anemia Gu铆a breve sobre la La anemia es un trastorno de la sangre. La sangre es un l铆quido esencial de anemia, como la anemia por deficien- cia de hierro, la anemia perniciosa, la anemia apl谩sica y la anemia hemol铆tica. Los distintos tipos de anemia tienen relaci贸n con diversas enfermedades y problemas de

Bandettini, Peter A.


A Monsanto no Brasil: Discursos publicitrios e tecno-cientficos sobre os transgnicos(*)  

E-print Network

1 A Monsanto no Brasil: Discursos publicit谩rios e tecno- cient铆ficos sobre os transg锚 Resumo: O trabalho aborda as estrat茅gias e pr谩ticas discursivas da Monsanto Nacional de Pesquisa Cient铆fica. O artigo 茅 pautado em documentos publicit谩rios difundidos pela Monsanto

Paris-Sud XI, Universit茅 de


Seminario sobre Teatro Latinoamericano en Bogot: Febrero 16 al 19, 1977  

E-print Network

siguiente: Febrero 16 10:30 am. Teatro Col髇 (Palomar) Seminario sobre la profesion- alizaci髇 en el teatro. Ponencia de Jorge Ali Triana. 3:30 pm. Teatro Col髇 (Palomar) A. Pr醕tica y filosof韆 del trabajo con T韙eres. Director del Taller: Eduardo Di.... Febrero 17 10:30 am. Teatro Col髇 (Palomar). Seminario: La Profesional- izaci髇 en el Teatro. Ponencias de Santiago Garc韆 y Carlos Jos Reyes. 3:30 pm. Talleres, continuaci髇. 6:30 pm. Teatro del Museo Nacional. El Galp髇: Logros y fracasos de un...




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

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.



Microsoft Academic Search

Resumo: Procuramos neste artigo observar as representa珲e s sobre os trabalhadores , afromatogrossenses realizadas pelos intelectuais que produziram o AGMT, Albhum Graphico do Estado de Matto Grosso. Desta maneira, buscamos nas entrelinhas do AGMT, os projetos, que durante as primeiras d閏adas do s閏ulo XX foram usados para excluir e expropriarem os afromatogrossenses nos projetos de moderniza玢o e organiza玢o do mercado

Adil閍 Benedita DELAM訬ICA



La capacidad de pago de la deuda externa. Un estudio emp韗ico sobre la Argentina y el Uruguay  

Microsoft Academic Search

Introducci髇. El problema de la deuda externa ocupa un lugar central en la discusi髇 latinoamericana sobre teor韆 y pol韙ica econ髆icas. Esta discusi髇 se ha extendido mas all de los medios puramente acad閙icos y financieros para convertirse en un elemento b醩ico de la discusi髇 pol韙ica cotidiana. Pese a este amplio debate es todav韆 dif韈il ver con claridad el problema de la

Renato Aguilar; Eduardo Giorgi; Rub閚 Tansini; Mario Zejan




E-print Network

EL IMPACTO DEL CONFLICTO POL脥TICO SOBRE LAS ORGANIZACIONES DE LA SOCIEDAD CIVIL EN VENEZUELA: EL Universidad Central de Venezuela RESUMEN: En los a帽os recientes, la p茅rdida de legitimidad, conflicto pol铆tico, Venezuela #12;INTRODUCCI?N En este trabajo intentamos analizar algunos de los impactos

Paris-Sud XI, Universit茅 de


La UA comprueba que la publicidad de alimentos en televisin se basa en mensajes sobre la salud  

E-print Network

La UA comprueba que la publicidad de alimentos en televisi贸n se basa en mensajes sobre la salud Alicante, 5 de diciembre de 2013 La publicidad de los alimentos en televisi贸n utiliza fundamentalmente especia de medicamentos con efectos preventivos y no como alimentos con pretensiones meramente saludables

Escolano, Francisco


Nunca ha sido fcil distinguir los hechos de la informacin falsa sobre los alimentos; las estrategias de mercadeo, las frases  

E-print Network

Nunca ha sido f谩cil distinguir los hechos de la informaci贸n falsa sobre los alimentos; las unos mitos comunes y persistentes respecto a los alimentos: Mito: Las frutas y verduras frescas son m谩s alimentos congelados y enlata- dos son tan nutritivos como los frescos. De hecho, ya que el licopeno es

Burke, Peter



Microsoft Academic Search

Se estudi el efecto de tres patrones y tres intervalos de riego sobre el nivel foliar de prolina en el naranjo (Citrus sinensis) cv. Valencia de cuatro a駉s de edad. Los intervalos de riego fueron de 5, 10 y 15 d韆s, y los patrones fueron mandarina Cleopatra (Citrus reshni), lim髇 Volkameriana (Citrus volkameriana) y citrange Carrizo (Poncirus trifoliata x Citrus

Manuel Wagner; Gast髇 Laborem; Gerardo Medina; Luis Rangel



Caracter韘ticas de la demanda en los estudios econom閠ricos sobre el turismo e implicaciones de pol韙ica econ髆ica y de estrategia empresarial  

Microsoft Academic Search

En diferentes estudios econom閠ricos sobre la demanda de turismo en Espa馻 por parte de extranjeros, en los que ha participado el autor, se encuentra que: 1) las fuertes oscilaciones de la demanda se deben m醩 a efectos de los precios que a variaciones en la renta de los turistas; 2) la elasticidad de la demanda respecto a los precios no

Antoni Espasa



Programas Internacionales de la UA Consulta toda la informacin sobre acceso de estudiantes extranjeros, Programas de Movilidad, Centro de  

E-print Network

Movilidad Programas Internacionales de la UA Consulta toda la informaci贸n sobre acceso de estudiantes extranjeros, Programas de Movilidad, Centro de Estudios Orientales, Programas Cooperaci贸n Healthcare System Nowadays (del 3 al 14 de junio 2013) Programas de Movilidad (Nacional e Internacional) Los

Escolano, Francisco


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


La Secretaria Valeria, posada sin reclinarse sobre el sof de la sala de espera, contemplaba altiva al  

E-print Network

1 La Secretaria Valeria, posada sin reclinarse sobre el sof谩 de la sala de espera, contemplaba sol铆a efluir de Valeria, efecto que de hecho cultivaba, no estaba segura. El chico se inclin贸 un poco una voz procedente del umbral: 颅驴Srta. Valeria Ortiz? Puede usted pasar. Ignorando al joven, Valeria

Johnson, Samuel


Estudios de la Facultad de Derecho Informacin sobre PREINSCRIPCIN y MATRCULA para el curso 2014-2015  

E-print Network

Estudios de la Facultad de Derecho Informaci贸n sobre PREINSCRIPCI?N y MATR脥CULA para el curso 2014 路 DERECHO 路 DERECHO-ADE (DADE) 路 DERECHO-CRIMINOLOG脥A (DECRIM) 路 GESTI?N Y ADMINISTRACI?N P?BLICA Universitario en Derecho Ambiental y de la Sostenibilidad 路 Doctorado en Derecho 路 Curso de experto en Derecho

Escolano, Francisco


Racioc'inio abdutivo sobre especificac~oes temporais de objectos Nome: Maria Paula Antunes Abrantes Gouveia  

E-print Network

Racioc'inio abdutivo sobre especifica赂c~oes temporais de objectos Nome: Maria Paula Antunes Abrantes Gouveia Doutoramento em: Matem'atica Orientador: Doutora Maria Cristina Sales Viana Ser赂c~ao da propriedade em causa e mant??em a coer??encia. S~ao tamb'em estabelecidos alguns crit'erios l

Lisboa, Universidade T茅cnica de


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

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.


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

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.


Datos sobre la biometr韆 del P醞aro mosc髇 (Remiz pendulinus) en la provincia de Alicante (SE de Espa馻)  

Microsoft Academic Search

Aquesta nota presenta dades biom鑤riques sobre la longitud de l'ala i el pes del teixidor en una localitat d'hivernada de la provincia d'Alacant. Es va obtenir una mitjana de la longitud de l'ala de 55,88 mm (SD= 1,85; n= 51), amb un rang de 51-60 mm. La mitjana del pes va ser 9,33 g (SD=0,52; n=51) (8-10,5). No es van

Ignacio Garc韆 Peir



On-Site Wastewater Treatment Systems: Operation and Maintenance (Spanish)  

E-print Network

del sistema de tratamiento de aguas negras porque puede aplastarlos. Los componentes han sido dise?ados para sostener el suelo sobre el sistema, pero no para aguantar que pase equipo sobre ?l. 3 Las aguas negras contienen bacteria natural que...

Lesikar, Bruce J.; Enciso, Juan




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



Desempleo, inmigraci髇 y su impacto sobre el desempleo en Medell韓: An醠isis de las encuestas de calidad de vida-Medell韓, 2004-2005  

Microsoft Academic Search

Resumen: este estudio se enfoca en el patr髇 y en las causas del desempleo en Medell韓; en el patr髇 y la velocidad de inmigraci髇 hacia Medell韓 y en el impacto de la inmigraci髇 sobre la tasa de desempleo para los a駉s 2004 y 2005. El estudio se realiza con base en el an醠isis de la Encuesta de Calidad de Vida

Donald J. Robbins




E-print Network

: movimientos sociales, identidades, autonom铆a, redes, horizontalidad, diversidad, multiculturalidad: 10 CONCEPTOS SOBRE LOS NUEVOS MOVIMIENTOS SOCIALES. Tatiana COLL LEBEDEFF Universidad Pedag贸gica movimientos sociales o nuevos sujetos de la acci贸n social, muchos de ellos comparten un conjunto de

Boyer, Edmond


Preconceptos sobre el odont髄ogo y la consulta odontol骻ica por parte de ni駉s de s閜timo grado en una instituci髇 rural en el estado Trujillo, Venezuela  

Microsoft Academic Search

RESUMEN El rol del odont髄ogo en la prevenci髇, educaci髇 y cuidados para la rehabilitaci髇 del sistema estoma- togn醫ico es de notable importancia para la salud del individuo. Sin embargo, no existe una adecuada difu- si髇 sobre el rol del odont髄ogo. Por lo tanto, es de esperar que existan preconceptos err髇eos en los ni駉s acerca de este profesional y sus funciones,



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



Affectivit et sentiment en conomie politique : Cartas sobre los obstculos que la naturaleza, la opinin y las leyes oponen a la felicidad  

E-print Network

Affectivit茅 et sentiment en 茅conomie politique : Cartas sobre los obst谩culos que la naturaleza, la rh茅torique. Nous insistons en particulier sur le recours aux sentiments dans l'茅criture d'une des oeuvres de'id茅es exactes, situant ainsi l'oeuvre 脿 mi-chemin entre l'imagination, les sentiments et la raison. Cependant

Paris-Sud XI, Universit茅 de


FACULTDAD DE CIENCIAS DE LA SALUD DE LA UNIVERSIDAD DE ALICANTE TTULO: Seminario sobre "Divulgacin de conocimientos en ciencias de la nutricin"  

E-print Network

FACULTDAD DE CIENCIAS DE LA SALUD DE LA UNIVERSIDAD DE ALICANTE T脥TULO: Seminario sobre "Divulgaci贸n de conocimientos en ciencias de la nutrici贸n" DESTINADO A: Estudiantes de Grado de Nutrici贸n:00 a 18:00. LUGAR: Sal贸n de grados de la Facultad de Ciencias de la Salud de la Universidad de Alicante

Escolano, Francisco


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

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.


o sobre la identificaci髇  

Microsoft Academic Search

This article renders the possibility to interpret the end of Aristophanes' Clouds as an al lu sion to the rite of the pharmak髎, when a man who loads the others' guilt is punished. It is compared with the Socrates' proposition in the Plato's Apology. Aristophanes does not blame Socrates himself, but the Strepsiades' anti-ethic and illegal attitude and the use

Pablo A. Cavallero



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 Central

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



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.




Microsoft Academic Search

ReSUMeN Objetivo: Determinar el nivel de conocimientos sobre el VIH\\/SIDA y las pr醕ticas sexuales de los escolares de 14 a 17 a駉s de la ciudad de Tacna, Per. Materiales y m閠odos: Estudio transversal realizado entre septiembre y noviembre del 2004, se realiz un muestreo probabil韘tica biet醦ico por conglomerados en instituciones educativas nacionales y privadas. Se incluyeron 399 escolares que respondieron

Fresia Catacora-L髉ez; Javier Villanueva-Roque



Microsoft Academic Search

The wear resistance of blades of three types of rotary plows (rotavator, power harrows and motorhoes) in tropical soils of Santa Fe de Antioquia was studied. Also, rubber wheel-dry sand abrasive wear tets were performed in laboratory according to ASTM G65 standard. The maximum wear in field tests was found in blades from power harrows and rotavator. The high rotating





Microsoft Academic Search

Soil redistribution due to tillage practices has been identified as an intensive soil erosion process. The long-term effects of this intensive soil redistribution within agricultural fields have resulted in a drastic modification of the landscapes. This paper presents several cases of field features observed in agricultural fields of contrasted agronomical and environmental conditions in Central Spain, Tuscany (Italy) and Central



Identificaci髇 de los servicios ambientales potenciales de los suelos en el paisaje urbano del Distrito Federal  

Microsoft Academic Search

Ecosystems health and integrity has been affected due to the growth and expansion of the cities reducing their capability to offer environmental services. Soil is one of the first components altered, diminishing the provision of numerous benefits linked to the citizens quality of life. In this work a first analysis of this situation in Mexico City is carried out. Maps

Silke Cram; Helena Cotler; Luis Miguel Morales; Irene Sommer; Estela Carmona




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



Semirido: un desafo para la CienciaSemirido: un desafo para la Ciencia del Suelodel Suelo  

E-print Network

mostr贸 mayor espesor y correspondi贸 a aportes de lluvia. La composici贸n isot贸pica del agua extra铆da del(SL), Argentina ISOTOPOS ESTABLES COMO TRAZADORES DE LAS FUENTES DE AGUA DE BOSQUES DE ALGARROBO EN UN DESIERTO. Biology 颅 Duke University, Durham, North Carolina (27708), EE.UU. RESUMEN: El agua subterr谩nea puede ser

Nacional de San Luis, Universidad


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



Microsoft Academic Search

Coffee is one of the most widely consumed beverages in the world due to its organoleptic properties and its ability to keep individuals alert. However, its consumption is frequently associated with negative health effects. This paper reviews the most recent information about the relation between coffee and health. A number of epidemiological studies carried out in the last decade consistently

Mart韓 Gotteland; Saturnino de Pablo V



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


Estudo sobre qualidade de vida com pacientes p髎-TMO: aplica玢o do question醨io WHOQOL-Bref Study on quality of life of post-BMT patients: application of WHOQOL-Bref questionnaire Estudio de la calidad de vida de pacientes de post-TMO: aplicaci髇 del cuestionario WHOQOL-Bref  

Microsoft Academic Search

RESuMO: O presente trabalho teve por objetivo avaliar a qualidade de vida de pacientes submetidos ao transplante de medula 髎sea utilizando-se um question醨io de avalia玢o de qualidade de vida, e refletir sobre as contribui珲es deste instrumento para a compreens鉶 do impacto da doen鏰 na vida destes sujeitos, bem como a utilidade destes indicadores para formular e fundamentar o racioc韓io cl韓ico

Maria da Concei玢o dos Santos; Fernanda de Castro Ferreira; Silva Moreira; Marina Ribeiro Rodrigues



Microsoft Academic Search

A dynamic study of the balances of the principal elements in a Pinus radiata D. Don forest system was carried out during two consecutive years (1997\\/8), in a forest plot situated in the centre of Galicia (Alto de O Martelo, A Coru馻, NW Spain). The aim of the study was to obtain data that would allow reference levels to be




Microsoft Academic Search

The saturated hydraulic conductivity,ks, is a physical parameter included in all process related to water and solute movement through soil. It constitutes a relevant characteristic of soil and many other soil parameter values are usually derived from it. The spatial variability of ks in the soil surface is inherent to the complexity of this medium. However, in agricultural soils such

M. J. Polo; P. Lafuente; J. V. Gir醠dez




Microsoft Academic Search

An infiltration and redistribution model based on the modified Green and Ampt equation and a redistribution scheme based on the methodology described by Ogden and Saghafian (1997) was tested. The infiltration and redistribution processes are crucial not only in the hydrological dynamics of the system, but in the ecological dynamics as well; therefore it is necessary to accurately model these

R. Mu駉z-Carpena; L. Gowdish



Microsoft Academic Search

A simple soil water model has been proposed, forced by the rainfall recharge and the bare surface evaporation during the interstorm periods, when the water table may be present. The model assumes the similarity hypothesis whereby water profiles are similar to those of the equilibrium state. The main soil water characteristics are described by the potential Brooks and Corey relationships.

J. V. Gir醠dez; K. Vanderlinden; R. Ord篑ez



Microsoft Academic Search

Soil pollution has been studied after the spill of the Aznalcollars mine (As, Zn, Cd, Cu y Pb) between July 1998 and December 2001, both in total concentrations, as in soluble and bioavailable elements. The main remediation measures realized in that period were: Cleaning-up of the tailings and polluted soils, and application of amendment materials (liming). The results indicate that,




Microsoft Academic Search

A 2- year field study was performed to evaluate heavy metals (Cu, Zn, Ni, Cd, Pb and Cr) uptake and their distribution in corn plants (Zea mays L.) grown on a calcareous soil amended with different rates of sewage sludge compost. Residual soil heavy metals effect was also determinated along different depths (0-20, 20-40, 40-60 and 60-80 cm). The values

Gabriela CUEVAS; Ingrid WALTER



Nota sobre "Neblina" (Notes on "Neblina")  

ERIC Educational Resources Information Center

Suggests that the Royal Spanish Academy change the definition of "neblina" in the next edition of the "Dictionary of the Spanish Language" to "niebla ligera" or "light fog," and cites literary usage in support. (Text is in Spanish.) (CK)

De Bruyne, Jacques




E-print Network

Manuel R铆os Corbacho Director. Foro de Derecho, ?tica y Deporte Dr. Manuel Quintanar Director del partidos en el 谩mbito internacional D. Chris Eaton Director de Integridad en el Deporte. Centro Internacional de Seguridad en el Deporte D. Brett Forrest Periodista, Autor del Libro "The Big Fix" D陋 Katie

Geffner, Hector


Sobre la importancia de la alfabetizacin informtica  

E-print Network

of training high school teachers. The central discussion is developed around the concept of information are discussed some ideas about the integration of information technology in education departing from technology literacy from which are given some analysis elements as well as some particular problems

Spagnolo, Filippo


Ensayo filos骹ico sobre educaci髇 superior y humanismo  

Microsoft Academic Search

Higher education, as an essential premise for the cultural, social and scientific development of a country, can be a determining factor for achieving the goal of one day living in a just and free society. The great pedagogues and philosophers are remembered as ingenuous idealists who are not worth listening to and few people think about the possibility that they

C髍dova L髉ez



E-print Network

, o que resta de um espet谩culo teatral ap贸s os aplausos? "O fechar da cortina 茅 uma morte 颅 uma). Por茅m, o poder de recome莽ar 颅 e, por conseguinte, de vencer a morte 颅, assim como a capacidade

Boyer, Edmond


WSA index as an indicator of soil degradation due to erosion  

NASA Astrophysics Data System (ADS)

Knowledge of spatial distribution of soil aggregate stability as an indicator of soil degradation vulnerability is required for many scientific and practical environmental studies. The goal of our study was to assess predisposition of different soil types to change aggregate stability due to erosion. Five agriculture arable lands with different soil types were chosen. The common feature of these sites is relatively large slope and thus soils are impacted by water erosion. The first studied area was in Brumovice. The original soil type was Haplic Chernozem on loess, which was due to erosion changed into Regosol (steep parts) and Colluvial soil (base slope and the tributary valley). A similar process has been described at other four locations Vidim, Sedlcany, Zelezna and Hostoun, where the original soil types were Haplic Luvisol on loess and Haplic Cambisol on gneiss, Haplic Cambisol on shales, and Calcaric Cambisol on marlstone, respectively. The regular and semi-regular soil sampling grids were set at all five sites. The basic soil properties were measured and stability of soil aggregates (WSA index) was evaluated. In all cases, the higher aggregates stability was observed in soils, which were not (or only slightly) affected by water erosion and at base slope and the tributary valley (eroded soil particle accumulation). The lowest aggregate stability was measured at the steepest parts. When comparing individual sites, the highest WSA index, e.g. aggregate stability, was found in Sedlcany (Cambisol). Lower WSA indexes were measured on aggregates from Hostoun (Cambisol), Zelezna (Cambisol), Vidim (Luvisol) and the lowest values were obtained in Brumovice (Chernozem). The largest WSA indexes for Cambisols in comparison to Luvisols and Chernozem could be attributed to higher organic matter content and presence of iron oxides. Slightly higher aggregate stability of Luvisols in comparison to Chernozem, could be explained by the positive influence of clay (especially in form of clay coatings) and organic matter, and negative impact of pH. The largest range of WSA values were found for Sedlcany (WSA = 0.41 to 0.93), followed by Vidim (WSA = 0.32 to 0.78) and Brumovice (0.20 to 0.67), Zelezna (WSA = 0.35 to 0.78) and Hostoun (WSA = 0.53 to 0.85). This indicates that the largest impact of erosion on aggregate stability was measured for Cambisol in Sedlcany. Similar impact of soil erosion was observed for both soils on loess and Cambisol in Zelezna. The lowest impact of erosion on aggregate stability was measured for Cambisol in Hostoun. Acknowledgement: Authors acknowledge the financial support of the Ministry of Agriculture of the Czech Republic No. QJ1230319

Jaksik, Ondrej; Kodesova, Radka; Schmidtova, Zuzana; Kubis, Adam; Fer, Miroslav; Klement, Ales; Nikodem, Antonin



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




Microsoft Academic Search

In a tropical region of Veracruz, M閤ico, five shaded coffee agroforestry systems were evaluated without repetition: 1) wild agroforestry system; 2) improved traditional polycultivation (PTM) with live barriers of \\

Joel P閞ez-Nieto; Eduardo Vald閟-Velarde; Mat韆s E. Hern醤dez-San Rom醤; V韈tor Ordaz-Chaparro



Microsoft Academic Search

In this paper, starting from dose rate in air due to gamma emitter radionuclides in soil, changes in dose rate due to source mobility in deep soil are studied. Dose rate is assessed using a Monte Carlo simulation (DAGES code) at a 1 m height above ground for an arbitrary distribution of the contaminant in soil. The radionuclides vertical mobility

M. Rizzotto; H. Velasco; N. Merkis; J. Toso


Movilidad de los plaguicidas carbofuran e imidacloprid en un suelo Typic Humitropept Mobility of pesticides carbofurane and imidacloprid in Typic Humitropept soil  

Microsoft Academic Search

Laboratory studies were conducted in order to determine mobility of the pesticides car- bofuran and imidacloprid in a soil type Typical Hu- mitropept of Melendez, Cali, Valle del Cauca series. The packed columns with 5.4 cm internal diameter and 30 cm of height, soil water contents of field ca- pacity, and feigned precipitation 300 mm in a period of 48

H閏tor Mario Guti閞rez; Luz Edith Barba; Hern醤 Mater髇


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贸n de las nuevas redes de informaci贸n, al final, a colonizar dichas redes y afianzarse a煤n m谩s en sus sectores productivos generando menores

Bilbao Arrese, Jes煤s Mario


[Parenting Information. Informacion Sobre Como Ser Padres Mejores.  

ERIC Educational Resources Information Center

These five booklets, containing information on how parenting can effect children's school achievement, are part of a series of 22 innovative booklets designed specifically to help parents understand and help their children learn. Booklet #1, "Parents--Teach Your Children to Learn [Before They Go to School]," defines intelligence and suggests

Moreno, Steve


[Parenting Information: Teenagers. Informacion Para los Padres: Sobre los Jovenes.  

ERIC Educational Resources Information Center

These four booklets are devoted specifically to the concerns of parents and their teenage children and are part of a series of 22 booklets designed specifically to help parents understand their children and help them to learn. "Parents--Learn about Your Teenager" (booklet #6) explains the changes which occur during the teen years and the reasons

Moreno, Steve


[Parenting Information: Drugs. Informacion Para los Padres: Sobre las Drojas.  

ERIC Educational Resources Information Center

These two booklets provide basic information about drugs and drug abuse and are part of a series of 22 booklets, designed specifically to help parents understand their children and help them to learn. "Let's Talk about Drug Abuse," (booklet #18), reviews foreign substances or drugs young people are often exposed to (i.e., tobacco, alcohol,

Moreno, Steve


Impacto de la Descentralizaci髇 Fiscal sobre la Educaci髇 P鷅lica Colombiana  

Microsoft Academic Search

Este trabajo analiza el impacto de la descentralizaci髇 fiscal en la provisi髇 de la educaci髇 p鷅lica en Colombia. Dicho an醠isis se realiza mediante t閏nicas de frontera, que permiten estimar funciones de costo y de producci髇, para determinar diferencias entre los departamentos en eficiencia t閏nica y de asignaci髇, en la provisi髇 de la educaci髇 p鷅lica. Los resultados muestran la presencia de

Ligia Melo Becerra




E-print Network

diversos livros e artigos jur铆dicos. halshs-00126323,version1-24Jan2007 Author manuscript, published ci锚ncia, toda filosofia 茅, inicialmente, uma cr铆tica da l铆ngua. A l铆ngua de uma ci锚ncia n茫o 茅 a l铆ngua

Paris-Sud XI, Universit茅 de


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



Lecturas sobre Locke: Los dilemas de la propiedady la libertad  

Microsoft Academic Search

This presentation is part of the Conceptions of Autonomy track.\\u000aEste trabajo interroga por los sentidos del argumento seg鷑 el cual la primera propiedad de un individuo es su cuerpo a la luz de los debates feministas del presente. Interroga tambi閚 por las transformaciones que las condiciones hist髍icas, sociales y los horizontes de comprensi髇 marcados por las lenguas y las

Alejandra Ciriza



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



Proposiciones Sobre Autonomia Universitaria. (Propositions on University Autonomy).  

ERIC Educational Resources Information Center

University autonomy is a concept widely discussed and often misunderstood. In the Latin American context, university autonomy has been regarded as something inherent to the nature of the universities. As long as universities exist, the phenomenon of university autonomy will be present . University autonomy should be examined in the light of such

Valle, Victor M.


Efectos del cannabis sobre la salud mental en j髒enes consumidores  

Microsoft Academic Search

Summary This is the second part of a review of the damage to health associated with cannabis consumption among young people. The first part reviewed the available evidence about the adverse effects of cannabis on physical health. This second part deals with the available evidence about its effects on mental health. Cannabis has been considered a relatively harmless drug, and

L. Guti閞rez Rojas; J. De Irala; M. A. Mart韓ez-Gonz醠ez



Una perspectiva sobre la naturaleza en el Humanismo italiano  

Microsoft Academic Search

This article starts by offering a general overview of the main characteristics of 15 th Century Florentine Humanism and its stages. Pico della Mirandola belongs to the stage of cientific and philosophical concerns. The article reviews the basic notions of natural philosophy in Pico's works and claims that there is a gradual development on these ideas. First, on De hominis

Silvia Magnavacca


A influ阯cia da atividade f韘ica regular sobre o autoconceito  

Microsoft Academic Search

The influence of regular physical activity on the self-concept. The objective of this research was to study the effect of regular physical activity of men and women over 40 on their self-concept. The Self- concept Factorial Scale was administered to 200 subjects, half of them practicing some kind of regu- lar physical activity and the other half being sedentary. The

Alvaro Tamayo; Ana Paula M. de Campos; Daniela R. Matos; Graciano R. Mendes; Juliana B. dos Santos; N醠is T. de Carvalho



Estudio sobre el desarrollo de protocolos familiars en Galicia  

Microsoft Academic Search

A research project on Galician family business, financed by the Coru馻 University during years 2004 and 2005, has allowed to analyze the answers, coming from 57 Galician familiar companies that invoiced in year 2003 more than 5 million euro. One of the aspects gathered in this project, and that constitutes the object of study of this article, shows as it




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


Conversaciones sobre vida y teatro con Susana Torres Molina  

E-print Network

las abuelas a informarse y a querer hacerse los an醠isis de consanguinidad. Yo particip tambi閚 como coautora del espect醕ulo Sorteo y dirigiendo un texto po閠ico de Mar韆 Mascheroni, La noche sabe lo que hace cuando tiembla. Todo el proceso de...

André , Marí a Claudia



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



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




Properties and Classification of Soils of the Swedish Long-Term Fertility Experiments: II. Sites at 謗ja and Orup  

Microsoft Academic Search

The 謗ja soil (Landskrona) was classified as a clayey, illitic, mesic Typic Eutrochrept according. to the Soil Taxonomy and as a Eutric Cambisol according to the FAO revised legend. The soil profile consisted of a dark-grayish brown coloured Ap-horizon and a slightly stony subsoil containing flint and limestones (ca. 2 vol%). The textural composition of the 謗ja profile was 37%

Holger Kirchmann; Jan Eriksson



Earthworm casting: Stabilization or destabilization of soil structure?  

Microsoft Academic Search

The aim of the study was to determine the effect of the gut passage through earthworms on the aggregate stability of soils varying in texture, carbonate and organic matter content. The soil material used originated from the Ap and B horizon of a loam soil (Gleyic Luvisol) and from the Ap and P horizon of a clay soil (Calcaric-Vertic Cambisol).

Stefan Schrader; Haiquan Zhang



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


The Relevance of Scale in Soil Maps Madlene Nussbaum1  

E-print Network

units or orders (e.g. Luvisol, Cambisol) and/or its characteristics (e.g. pH, organic carbon, etcThe Relevance of Scale in Soil Maps Madlene Nussbaum1 , Linda Ettlin1 , Arzu ?枚ltekin1 , Brigitte kleinen Massstabszahl enthalten immer noch substantielle Unsicherheiten. Keywords: soil map, scale, soil

?枚ltekin, Arzu


Stabilisation of soil organic matter by interactions with minerals as revealed by mineral dissolution and oxidative degradation  

Microsoft Academic Search

Soil organic matter is known to contain a stable fraction with an old radiocarbon age. Size and stabilisation processes leading to the formation of this old soil carbon pool are still unclear. Our study aims to differentiate old organic matter from young and labile carbon compounds in two acid forest soils (dystric cambisol, haplic podzol). To identify such fractions soil

Karin Eusterhues; Cornelia Rumpel; Markus Kleber; Ingrid K鰃el-Knabner



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



An English-Spanish Glossary of Terminology Used in Forestry, Range, Wildlife, Fishery, Soils, and Botany = Glosario en Ingles-Espanol de Terminologia Usada en Forestales, Pastizales, Fauna, Silvestre, Pesqueria, Suelos, y Botanica.  

ERIC Educational Resources Information Center

This document presents English-Spanish/Spanish-English equivalent translations of scientific and management terms commonly used in the field of natural resource management. The glossary is composed of two sections. Section 1 contains the English to Spanish translations, while Section 2 provides the Spanish to English translations. Each section is

Medina, Alvin Leroy


El m閠odo del hidr髆etro: base te髍ica para su empleo en la determinaci髇 de la distribuci髇 del tama駉 de part韈ulas de suelo The hydrometer method: theoretical basis for its employment in determining the soil particle-size distribution  

Microsoft Academic Search

The objective of this work is to physically explain the bases supporting the hydrometer method for determining the soil size particle distribution. The equations related to the physical principles of the phenomenon and the principle of working of the hydrometer as such, are explained in details. An analysis of the relationship between these equations and the most well recognized simplifications

Jorge Garc韆 Coronado; Daniel Nez Acosta



Emergencia y sobrevivencia de gram韓eas con diferentes secuencias de humedad\\/sequ韆 en tres tipos de suelo Emergence and survival of native and introduced grasses in an arid environment under different wet-dry sequences in three soil types  

Microsoft Academic Search

Land degradation can be reversed using revegetation. Reseeding in degraded pastures is high risk, and requires knowledge of grass species behavior under several precipitation regimens. A study was done to evaluate germination and survival of native and introduced gramineas in an arid environment under different wet-dry sequences and in different soil types. The experiment was conducted under greenhouse conditions. Soils

Mario Humberto Esqueda Coronado; Alicia Melgoza Castillo; Manuel Sosa Cerecedo; Regina Carrillo Romo; Jorge Jim閚ez Castro


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



Percep珲es de estudantes de licenciatura em Ci阯cias Naturais sobre uma unidade did醫ica acerca da humaniza玢o das ci阯cias com base nos estudos de Gregor Mendel sobre a hereditariedade.  

E-print Network

??Disserta玢o (mestrado)桿niversidade de Bras韑ia, Instituto de Ci阯cias Biol骻icas, Instituto de F韘ica, Instituto de Qu韒ica, Faculdade UnB Planaltina, Programa de P髎-Gradua玢o em Ensino de Ci阯cias, Mestrado (more)

Melo, Juliana Ricarda de



Irrigation Monitoring with Soil Water Sensors (Spanish)  

E-print Network

la misma ubicaci?n. ? Respuesta lenta a cambios en el contenido de agua en el suelo despu?s de una lluvia o un riego. ? Falta de precisi?n en suelos arenosos debido a sus part?culas grandes. ? Requiere de tiempo para determinar cu?l lectura del...El monitorear el contenido de agua en el suelo es esencial para ayudar a los agricultores a optimizar la producci?n, conservar agua, reducir los impactos ambientales y ahorrar dinero. El monitorear la humedad del suelo le puede ayudar a tomar...

Enciso, Juan; Porter, Dana; Peries, Xavier



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



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



The effect of agricultural management systems on the weed incidence in cereals  

Microsoft Academic Search

Two field trials were carried out at the Lithuanian Institute of Agriculture's Joniskelis Research Station on an Endocalcari-Endohypogleyic Cambisol. The experiments were designed to identify the effects of legume pre-crops and intercrops as well as the impact of their biomass incorporated as green manure on the weed incidence in succeeding cereals. The effects of legume pre-crops red clover, sown lucerne,

S. Maiksteniene; A. Arlauskiene


Alley cropping groundnut with Gliricidia sepium in C魌e d'Ivoire: effects on yields, microclimate and crop diseases  

Microsoft Academic Search

Despite its economic and nutritional importance, groundnut (Arachis hypogaea L.) has received little attention in alley cropping research. Groundnut was grown in rotation with rice and maize during two successive years in an alley cropping experiment with Gliricidia sepium (Jacq.) Steud. (Fabaceae) on a Ferralic Cambisol\\/Plinthic Lixisol in the semi-deciduous rainforest zone of the C魌e d'Ivoire. Drought caused low groundnut

G. Schroth; P. Balle; R. Peltier



Leaching of depleted uranium in soil as determined by column experiments  

Microsoft Academic Search

The basic features of the leachability of depleted uranium (DU) projectiles in soil was investigated by using 12 projectiles\\u000a (145294爂 DU) and 16 columns installed in an air-conditioned laboratory. Two soils widely distributed in Europe, a sandy-loamy\\u000a cambisol and a silty-loamy luvisol, were filled into the columns (3.3爇g dry soil each). The effluents of all columns were\\u000a collected weekly during

W. Schimmack; U. Gerstmann; U. Oeh; W. Schultz; P. Schramel



A pedodiversity pattern: taxonomically established soil orders in China  

Microsoft Academic Search

Under the framework of Chinese Soil Taxonomy, all the 14 established soil orders including Histosols, Anthrosols, Spodosols,\\u000a Andisols, Ferralisols, Vertisols, Aridisols, Halosols, Gleyosols, Isohumisols, Ferrisols, Luvisols, Cambisols and Primosols,\\u000a forming a complicated pedodiversity pattern resulted from both various natural conditions and long history of human activities,\\u000a are introduced with brief descriptions. At the end of the paper, the selected references

Zhang Xuelei; Gong Zitong



Properties of soil humic substances in fractions obtained by sequential extraction with pyrophosphate solutions at different pHs  

Microsoft Academic Search

The FT-IR and H NMR spectra of humic acids, which were obtained from four soils of different types (a Fibric Histosol, Dystric Cambisol, Umbric Andosol, and buried Umbric Andosol) by sequential extraction with pyrophosphate solutions at different pH values (i.e. at pH 3, 5, 7, 9, 11, and 13), were measured. The shape of the IR spectra for each humic

Nobuhide Fujitake; Atsuko Kusumoto; Yukiko Yanagi; Takeshi Suzuki; Hiroo Otsuka



Effects of soil type and genotype on cadmium accumulation by rootstalk crops: implications for phytomanagement.  


The variations of Cd accumulation in three rootstalk crop species (radish, carrot and potato) were investigated by using twelve cultivars grown in acidic Ferralsols and neutral Cambisols under two Cd treatments (0.3 and 0.6 mg kg(-1)) in a pot experiment The result showed that the total Cd uptake was significantly affected by genotype, soil type and interaction between them, suggesting the importance of selecting proper cultivars for phytoextraction in a given soil type. Among the cultivars tested, potato cultivar Luyin No.1 in Ferralsols and radish cultivar Zhedachang in Cambisols exhibited the highest Cd phytoextraction efficiency in aerial parts (4.45% and 0.59%, respectively) under 0.6 mg kg-1 Cd treatment. Furthermore, the Cd concentrations in their edible parts were below the National Food Hygiene Standard of China (0.1 mg kg(-1), fresh weight). Therefore, phytomanagement of slightly Cd-contaminated soils using rootstalk crops for safe food production combined with long-term phytoextraction was feasible, and potato cultivar Luyin No.1 for Ferralsols and radish cultivar Zhedachang for Cambisols were promising candidates for this approach. PMID:24933899

Ding, Changfeng; Zhang, Taolin; Wang, Xingxiang; Zhou, Fen; Yang, Yiru; Yin, Yunlong



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:; Tlustos, Pavel; Szakova, Jirina; Habart, Jan [Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences, 165 21 Prague (Czech Republic)



Perspectiva sobre una Personalidad Senera: Carmen Fischer Ramirez (Perspective on a Singular Personality: Carmen Fischer Ramirez).  

ERIC Educational Resources Information Center

Traces the career of Carmen Fischer Ramirez, focusing on her work in improving early childhood education in Chile. Reviews her university career, work with the World Organization for Early Childhood Education, and major publications. (AC)

Quezeda, Dina Alarcon



Exploraciones sobre el soporte Multi-Agente en Minera de Datos  

E-print Network

como Clementine, DBMiner, Weka, etc. [11, 27, 24]. Weka se ha convertido en uno de los sistemas KDD m谩s importante se帽alar que aunque Weka permite ahorrar mucho tiempo en el prepro- cesamiento, an谩lisis y

Guerra Hern谩ndez, Alejandro


Metodolog韆 de investigaci髇 y lectura cr韙ica de estudios Apuntes sobre causalidad  

Microsoft Academic Search

Objective: to describe some definitions of causality, some explanations and understanding models, as well as some key elements used to identify it. Results: the paper reports a succinct description for causality and the models that have been used to explain the concept and understand it. The errors more frequently found when causality is explored and their key elements to determine

Carlos G髆ez-Restrepo; Martha Beatriz; Delgado Ram韗ez



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.


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

E-print Network

?n de una memoria colectiva que celebra los momentos hist?ricos que han llegado a impactar la formaci?n de la naci?n. Al describir algunos ejemplos del g?nero cinematogr?fico m?s popular en el cine mexicano, el melodrama, Zuzana M. Pick escribe...?an sido despojados los campesinos ind?genas en el sur de M?xico. 9 Por otra parte, tambi?n hab?a miembros de la ?lite en la capital y en provincia que no estaban de acuerdo con el gobierno dictatorial de D?az. Ricardo Flores Mag?n y su hermano...

Garza, Alex Steve



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



Como preparar un programa de informacion sobre la asistencia economica (Planning a Financial Aid Awareness Program).  

ERIC Educational Resources Information Center

This booklet, written in Spanish, is intended to be used with a set of slides as part of a presentation to students on "How To Apply for Federal Student Aid" ("Como Solicitar la Asistencia Economica Federal para Estudiantes"). The first part of the book is a script based on the slides. After the script is a guide to hosting a financial aid

Department of Education, Washington, DC.


Federalismo realocativo: sobre-representa玢o legislativa e gastos p鷅licos no hemisf閞io ocidental  

Microsoft Academic Search

This article is an inquiry into the political economy of federalism and the basic question explored is, does the overrepresentation of territories (states or provinces) in national legislatures of federal systems affect the territorial distribution of public spending by federal governments? The hypothesis to be tested is that it does, and that territorial overrepresentation produces a distortion of federal spending

Edward L. Gibson; Ernesto F. Calvo; Tulia G. Falleti



Efeitos demudan鏰s liberalizantes da conta de capital sobre ocrescimento: uma abordagem de avalia玢o depol韙icas p鷅licas  

Microsoft Academic Search

This paper uses the concept of Propensity Score Matching and Average Treatment Effect to measure the impact of the opening of the capital account on economic growth. First, propensity score is used to pair up treated and non-treated countries that share common characteristics. Through this procedure, different equations relating growth variables and treatment variables conditional on the propensity score are

Raquel Nadal; Raphael Martins



Consideracoes Historicas sobre o Ensino Profissionalizante no Brasil (Historical Considerations about Professional Education in Brazil).  

ERIC Educational Resources Information Center

Analyzes the paths taken in professional education in Brazil from the colonial period until the formation of the republic. Refers to specialists as well as specific laws for each period described in the study. (BT)

Barros, Marta Silene Ferreira



RESOLUO N. 01/PPGFIL/2012, DE 20 DE ABRIL DE 2012. Dispe sobre credenciamento e  

E-print Network

(segundo os crit茅rios da 谩rea de Filosofia), ou 3 (tr锚s) cap铆tulos de livro de relev芒ncia e inova莽茫o para recredenciamento de professores no Programa de P贸s-Gradua莽茫o em Filosofia. O colegiado do Programa de P贸s-Gradua莽茫o em Filosofia, em reuni茫o realizada no dia 20 de abril de 2012, considerando o que disp玫em a Resolu莽茫o

Floeter, Sergio Ricardo


Efeitos de diferentes conting阯cias sobre o Efeitos de diferentes conting阯cias sobre o Efeitos de diferentes conting阯cias sobre o Efeitos de diferentes conting阯cias sobre o uso de tempos verbais na constru玢o de uso de tempos verbais na constru玢o de uso de tempos verbais na constru玢o de uso de tempos verbais na constru玢o de  

Microsoft Academic Search

The present study aimed to investigate the effects of earning and losing points contingent on the use of verbal tenses in sentence construction. In the experiment, 101 students were exposed to a computerized task in which sentences were constructed by selecting one of six different verbal tenses. In the experimental phase, and in different participant groups, the use of either

Eliana Isabel de Moraes; Gerson Yukio Tomanari


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.



Microsoft Academic Search

Direct and maternal Inbreeding effects on growth and production traits of 140.851 Nelore calves, born between 1984 e 1998 were studied. Traits analyzed were birth weight (PN), weaning weight (PD), yearling weight (PS), weight gain from weaning to yearling (GP), scrotum circumference, (PE) and visual scores of conformation (CO), precocity (PR) and muscle (MU). Inbreeding coefficients (F) for animals and



Intelig阯cia emocional: um estudo de validade sobre a capacidade de perceber emo珲es  

Microsoft Academic Search

ano do curso de Psicologia, com idades entre 21 e 50 anos, estagi醨ios na disciplina de Psicodiagn髎tico, al閙 de 8 professores supervisores da mesma disciplina. Os protocolos foram pontuados por 3 m閠odos: concord鈔cia com o consenso, concord鈔cia com especialistas e concord鈔cia com a pessoa-alvo. Discutiu-se alguns problemas metodol骻icos relacionados a esses crit閞ios de pontua玢o. Obtiveram-se correla珲es estatisticamente significativas com o

Jos Maur韈io Haas Bueno; Ricardo Primi



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.

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Inulina e Oligofrutoses: uma revis鉶 sobre propriedades funcionais efeito prebi髏ico e import鈔cia na ind鷖tria de alimentos  

Microsoft Academic Search

Abstract Nowadays,consumers,are more conscious about the relation between,food and health. Therefore food industry has been looking for food that has a lot of benefits besides good flavor and appearance. Inulin and oligofructose are fructose polimers, vastly found in plants as storage carbohydrates. They present important functional for the food industry. Both inulin and oligofructose have been used as fiber bulk

Maria Celia De Oliveira Hauly; Jana韓a Andr閍 Moscatto


Los Impuestos Especiales y la Financiaci髇 auton髆ica. An醠isis de los efectos sobre la equidad  

Microsoft Academic Search

RESUMEN El objeto de este trabajo es realizar una valoraci髇 de los Impuestos Especiales como instrumento financiero de las Comunidades Aut髇omas de r間imen com鷑 En primer lugar, se analizan las razones que podr韆n justificar su utilizaci髇. A continuaci髇, se ofrece una s韓tesis de la utilizaci髇 actual en la financiaci髇 de las Comunidades Forales, Canarias y el resto de las Comunidades

Laura de Pablos Escobar; M髇ica G髆ez de la Torre del Arco



Traumatic Brain Injury. Fact Sheet = Lesion Cerebral Traumatica (TBI). Hojas Informativas Sobre Discapacidades.  

ERIC Educational Resources Information Center

This fact sheet, written in both English and Spanish, offers general information about traumatic brain injury. Information includes a definition, incidence, individual characteristics, and educational implications. The signs of traumatic brain injury are listed and include physical disabilities, difficulties with thinking, and social, behavioral,

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


縀l Fin de la Historia? Notas sobre el espejismo de Francis Fukuyama  

Microsoft Academic Search

In this article a critic to Francis Fukuyama's end of history thesis is made. The essay starts with a comparison between Hegel's and Fukuyama's vision of history, and his author believes that there exist no mayor compatibilities between both, but in the contrary, me- aningful differences. Afterwards, the writer proceeds to compare Fukuyama's ideas with fact reality and, according to

A H閏tor; Herrera Cajas; Luis R. Oro Tapia; Revista ENFOQUES



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



71Revista Mexicana de Mastozoologa 10:71-74. 2006. ASPECTOS BSICOS SOBRE LA ECOLOGA DE  

E-print Network

usualmente son de aguas claras, flanqueados por grandes bloques rocosos (Parera, 1996; Larivi茅re, 1999). En, destrucci贸n de su h谩bitat y contaminaci贸n de las aguas (Gallo, 1986; Alho et al., 1988; Cheh茅ber, 1991). En el) la 茅poca de lluvias de mayo a octubre y 2) la 茅poca de secas de noviembre a abril (INEGI, 1988). Los

Nacional Aut贸noma de M茅xico, Universidad


Apuntes sobre 'Fulgor y muerte de Joaqu韓 Murieta' de Pablo Neruda  

E-print Network

. Uno桟u醠 es nuestro deber? Otro桵andarlos al diablo! Otro-To hell! To hell! Otro桻uemarlos! Otro桝horcarlos! (p. 51). d) Formas de civilizaci髇. Para Neruda los EE.UU. es un lupanar. El cuadro tercero de evidente intenci髇 simb髄ica contiene...

Droguett, Ivá n




Microsoft Academic Search

Several changes occurred in Neonatal Units since 1960, which contributed to a more elevated survival rate, but made the Neonatal Units a noisier environment. Since then, little is known about the negative effects of these stimuli on premature newborn autonomic responses. Health organizations recommendations have no consensus on the threshold of noise level and demand more studies on this subject.

E. G. Ramos; M. F. H. Nogueira; K. M. Piero; M. V. P. Dutra



Microsoft Academic Search

This study aimed to analyze the perception of the population of the municipality of Horizontina state of Rio Grande do Sul in the second half of 2008 on the positioning of one of the Cooperative Credit SICREDI. Based on the current communication plans and strategic positioning, the SICREDI is defined as \\

Eduardo Mireski; Jesildo Moura de Lima; Sandro Jos Fin; Sandro Ergang; Sociedade Educacional; Tr阺 de Maio


Representa珲es do on韗ico na modernidade : resson鈔cias dos discursos de Freud e Jung sobre os sonhos.  

E-print Network

??Disserta玢o (mestrado)桿niversidade de Bras韑ia, Instituto de Psicologia, 2007. Esta disserta玢o consiste em um esfor鏾 interdisciplinar que tem na psicologia seu campo privilegiado de investiga玢o. Nela, (more)

Brito, Marcelo Gustavo Costa de




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




Microsoft Academic Search

RESUMEN: Se comunica la presencia de 22 t醲ones pertenecientes a plantas vas- culares aut骳tonas o naturalizadas recolectadas en la provincia de Cuenca, que resultan raras o poco conocidas en la misma, destacando como novedades provinciales Carex demissa Hornem., Epilobium palustre L., Ranunculus ficaria L. subsp. ficaria y Senecio viscosus L. Por otro lado, Cardamine flexuosa With. no se conoc韆 en




Microsoft Academic Search

SUMMARY The limited understanding of the Principle of Relativity and its vague antl ambiguous formulation in most text-books, may be some of the sources of very common misconceptions on explaining this outstanding piece of the 20th century science. To diagnose these misconceptions a general check of many of books was carried out with the results that are expounded in this




Microsoft Academic Search

The purpose of this paper consists in analyzing the impact of obtaining a quality certification (ISO 9000) on firms market value, and to examine its influence on volatility. The sample used contains all the firms that, while trading in the Spanish stock market, have ever obtained a quality certification based on ISO 9000 norms between 1993 and 1999. To estimate

Juan Luis Nicolau; Ricardo Sellers



Efeito do estresse t閞mico e do exerc韈io sobre par鈓etros fisiol骻icos de cavalos do ex閞cito brasileiro  

Microsoft Academic Search

RESUMO - Os cavalos do ex閞cito brasileiro s鉶 usados em dias de exposi玢o e, muitas vezes, submetidos a exerc韈io intenso, que, aliado 鄐 condi珲es clim醫icas do cerrado do Centro-Oeste brasileiro, resulta na necessidade de extrema aclimata玢o dos mesmos. O objetivo desse estudo foi determinar o efeito do estresse t閞mico e do exerc韈io a que est鉶 submetidas 鄐 ra鏰s de eq黫nos

Giane Regina Paludo; Concepta McManus; Renata Queiroz de Melo; Andr Granja Cardoso; Fab韔la Peixoto da Silva Mello; Moryenne Moreira; Beatriz H. Fuck



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



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

E-print Network

麓ia es frecuente comunicarse con los amigos o conocer personas a trav麓es de las redes sociales), etc concepto de privacidad. Sin duda, las redes sociales est麓an produciendo un debilitamiento del mismo. Lo consecuencias sociales, pol麓iticas y econ麓omicas, cuyo impacto es incluso es dif麓icil de predecir. Para

De N谩poli, Pablo Luis



Microsoft Academic Search

This paper describes the design, implementation and validation strategies for an Intellectual Property (IP) soft Core deemed to fulfill the role of Medium Access Control protocol for Ethernet Local Area Networks. The design of the IP Core is done in the VHDL language, being thus flexible, portable a nd customizable to specific a pplications. The implementation is especially developed to

Delfim Luiz Torok; Fernando Gehm Moraes; Andrey V. Andreoli


Notas sobre ecomunitarismo, educaci髇 ambiental y pensamiento ind韌ena latinoamericano: los xavante y el Popol Vuh  

Microsoft Academic Search

In this paper we introduce a intercultural dialogue between our ecommuni- tarianist theory, including his environmental education vision, and the Latin- American indigenous thought, especially the xavante culture (who lives in Brazil) and the maya's Popol Vuh. To do so, we emphasize some revelations, some convergences and some differences.

Sirio Lopez Velasco



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茫o 茅 de espantar, j谩 que Papert trabalhou com Piaget na Su铆莽a), pese as necess谩rias diferen莽as que apresentam. Contudo, o aspecto essencial

Paris-Sud XI, Universit茅 de


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

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.


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





Microsoft Academic Search

There is, in Latin America, a general culture of non-observance of the law that has not been studied at length. In order to offer a historical perspective on the roots of this phenomenon, the article follows the development of the law and legal institutions during the colonial period and independence. Both periods show a divergence between the legal archetype that




Microsoft Academic Search

New records or confirmation of recently reported distributional range extensions or altitudinal movements are given or 14 species of birds from Ecuador: Cairina moschata, Netta erythrophthalma, Leucopternis semiplumbeus, Forpus coelestis, Crotophaga sulcirostris, Eriocnemis mosquera, Furnarius cinnamomeus, Pseudocolaptes boissonneautii, Phlegopsis nigromaculata, Querula purpurata, Cyclarhis gujanensis, Progne subis, Haplospiza rustica y Carduelis olivacea. The new records and their releva nce to the

Diego F. Cisneros-Heredia


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



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.


Efectos de algunas variables macroecon髆icas sobre los costos de operaci髇 de la maquinaria agr韈ola  

Microsoft Academic Search

The development of the agriculture sector depends on the efficiency of programs applied to the several processes of production, industrialization and commercialization. In order to get this efficiency is necessary to evaluate correctly the effect of the macroeconomics variables such as inflation, interest rates and exchange rates on the productivity of a particular enterprise. In agriculture, the farm machinery is

Nicol醩 Morales Carrillo; J. Aurelio Dur醤 Ram韗ez



Algunas consideraciones sobre el impacto de la desnutricion en el desarrollo cerebral, inteligencia y rendimiento escolar  

Microsoft Academic Search

SUMMARY. Some considerations related to the impact of undernutrition on brain development, intelligence and scholastic achievement. The findings from several authors confirm that undernutrition at an early age affects brain growth and intellectual quotient. Most part of students with the lowest scholastic achievement scores present suboptimal head circumference (anthropometric indicator of past nutrition and brain development) and brain size. On

Boris Leiva Plaza; Nelida Inzunza Brito; Veronica Castro Gloor; Joan Manuel; Jansana Medina; Triana Toro D韆z; Arturo Navarro D韆z; Mar韆 Soledad Urrutia C醕eres; Jorge Cervilla Oltremari; Daniza Ivanovic Marincovich



Fundamentos de la argumentaci髇 jur韉ica. Revisi髇 de las teor韆s sobre la justificaci髇 de las decisiones judiciales  

Microsoft Academic Search

El libro de la distinguida catedr醫ica de la Universidad de 羗sterdam, publicado en ingl閟 por Kluwer Academia Publishers, tiene una interesante estructura que permitir utilizarlo tanto para consulta de jueces, abogados y ciudadanos deseosos de aproximarse a la problem醫ica de nuestra profesi髇, como por los estudiantes de las Facultades de Derecho. Luego de una introducci髇, la autora muestra el tema

Eveline T. Feteris


縌u opinan pediatras y residentes de Pediatr韆 sobre la rotaci髇 por Atenci髇 Primaria?  

Microsoft Academic Search

IntroductionSince 2007, on a mandatory, pediatric residents (PR) have been obliged to rotate into primary health care centers for 3 months. On disagreeing with the type of rotation proposed, the teaching group of the Spanish Primary Care Pediatrics Association (AEPap) was raised to find out the views of Hospital Pediatricians (PH), Pediatrics Health Care (PHC) and PR in terms of

J. M. Garc韆 Puga; C. Villaz醤 P閞ez; B. Dom韓guez Aurrecoechea; R. Ugarte L韇ano



Sobre la Universidad UMASS Amherst es el recinto principal del sistema de la Universidad  

E-print Network

Massachusetts. La universidad est谩 ubicada en el oeste de Massa- chusetts en una de las zonas m谩s seguras y universidad no s贸lo tiene uno de los mejores centros de recreaci贸n del pa铆s, tambi茅n la pintoresca zona de-70 Mejores Universidades por reputaci贸n #55 Artes y Humanidades #50 Cl铆nicos/precl铆nicos y Salud #51 Ciencias

Mountziaris, T. J.


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.


Evite los Conceptos Err寐硁eos cuando Ense寐眅 sobre las Plantas  

NSDL National Science Digital Library

The resource is useful for teacher's professional development by alerting educators to many plant misconceptions in teaching literature. In the thought provoking, peer reviewed resource fifty misconceptions are identified. Some misconceptions are easier to identify because they are oversimplifications, overgeneralizations, or misidentifications. Others are more difficult to identify because they are obsolete concepts and terms or flawed research.

David R. Hershey (biology education consultant;)




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


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

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.


Informe sobre el proyecto contrastivo hispano-hungaro (Report on the Spanish-Hungarian Contrastive Project)  

ERIC Educational Resources Information Center

A description of a contrastive linguistics project in Hungary aiming to augment linguistic theories in the Spanish language and propound theories for scientific and artistic translation. (Text is in Spanish.) (CK)

Fulei-Szanto, Andres



NOTICIAS Y EVENTOS I reunin IMEMUA-empresa sobre inteligencia ecolgica (Publicada 05/03/2014)  

E-print Network

investigaci贸n, 24 de Abril a las 17h. Entrega del II Premio Jane Goodall de Biolog铆a de la Conservaci贸n y ?tica Premio Jane Goodall de Biolog铆a de la Conservaci贸n y ?tica Medioambiental, en la sede Ciudad de Alicante

Escolano, Francisco


NOTCIES I ESDEVENIMENTS I reuni IMEMUA-empresa sobre intelligncia ecolgica (Publicada 05/03/2014)  

E-print Network

. Lliurament de l'II Premi Jane Goodall de Biologia de la Conservaci贸 i ?tica Mediambiental (Publicada 09/01/2013) Avui dimecres 9 de gener tindr脿 lloc a les 20 h. l'acte de lliurament de l'II Premi Jane Goodall de

Escolano, Francisco


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



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



Consideraciones geomorfol骻韆s sobre la Sierra Madre Occidental en el norte de Jalisco, M閤ico  

Microsoft Academic Search

This analysis of the geographical space focuses on Geomorphology, a science that deals with the g閚esis and evolution of landforms. This definition includes two basic elements: relief and form. The former results from geological processes, and the latter from morpho-cllmatic processes. This work derives from the need to communicate the features of landform structures located at the northern portion of

Rosier Omar



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

E-print Network

useful in evaluation in order to make improvements and test the quality of the tutorial's methodologies time analysis, image charting, thematic maps and data bases. Thus, educators and students will have



Microsoft Academic Search

This study intends to analyze the various academic goals and their predictive power of the academic achievement in five different school subjects of Spanish core curriculum. In order to assess this, the Questionnaire of Academic Goals has been applied to a large sample of adolescents attending the four grade level years of Spanish Secondary Education (12 to 16 years). Data



Considera珲es sobre t閏nicas para a implementa玢o de skeletal animation em Jogos 3D  

Microsoft Academic Search

Neste artigo examinamos uma tecnologia de anima玢o conhecida como skeletal animation baseada na jun玢o hier醨quica das partes que formam o modelo a ser animado. Esta tecnologia pode ser aplicada a diversos dom韓ios onde a anima玢o de modelos necess醨ia, como a an醠ise e simula玢o f韘ica de estruturas hier醨quicas simples e anima珲es art韘ticas de modelos e entretenimento (jogos de computador). Para

M醨cio da Silva Camilo; Bernardo Nogueira; Soares Hodge; Rodrigo Pereira Martins; Alexandre Sztajnberg


Atividade inibit髍ia de extratos vegetais do cerrado sobre alfa-amilases.  

E-print Network

??Alpha-amylases, enzymes produced by animals, plants and microorganisms, participate in several important carbohydrate metabolism steps. The survival of the living beings that depend on carbohydrate (more)

Aline Fernanda Antunes



Iniciativa sobre Efectividad: Un entorno para el aprendizaje (Initiative about Effectiveness: An Environment for Learning).  

ERIC Educational Resources Information Center

This Spanish- and Portuguese-language bulletin presents articles focusing on the Effectiveness Initiative (EI), a project of the Bernard van Leer Foundation for making a qualitative analysis of those elements of the programs of Early Childhood Development (ECD) that benefit the participants and their communities and cultures. The first article

Moreno Garcia, Teresa, Ed.



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



Microsoft Academic Search

el pastoreo 3,24 . Existe evidencia que la capacidad de los suelos para sostener un determinado nivel de productividad en un sistema no es constante y tiende a fluctuar con el tiempo. Dicha fluctuaci髇 afecta la composici髇 f韘ica, qu韒ica y la fertilidad de los suelos al igual que la disponibilidad de minerales en los mismos. Esta situaci髇 se refleja en

Luis Eduardo Forero



Microsoft Academic Search

Los recursos mundiales de suelo son fini- Physical conditions, agricultural pro- tos y se vuelven limitantes c<:>n relacion a la duction and soil quality. World soil resources poblacion, ya que quedan pocas fronteras para are finite and are becoming limiting relative to el desarrollo, y el area existente de suelos de- population since there are few new frontiers for sarrollados

Warren Forsythe



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



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



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.



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...


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

Programas de Protecci贸n Contra Incendios Forestales: Una Visi贸n Global 51 Memorias del Segundo Simposio producen los incendios forestales en determinadas zonas, y las grandes dimensiones que en ocasiones. Un estudio de lo sucedido en zonas anteriormente quemadas puede ser interesante como instrumento de

Standiford, Richard B.


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

combustible entre las zonas forestales y las 谩reas de colindancia urbano-forestal? 驴Podemos lograr una. de Econ. Ag., 51 Campus Drive, University of Saskatchewan, Saskatoon, SK S7N 5A8. 3 National Center

Standiford, Richard B.


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

econom铆a agr铆cola (Department of Agricultural Economics), 51 Campus Drive, University of Saskatchewan-Cab谩n, Hesseln Introducci贸n El n煤mero creciente de incendios en zonas silvestres cada verano ha dado lugar

Standiford, Richard B.


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



UNA APLICACI覰 DE LA NOVENA EDICI覰 DE LA CLAVE DEL SOIL TAXONOMY PARA LA CLASIFICACI覰 DE SUELOS. CASO ESTACI覰 EXPERIMENTAL SANTA ROSA, M蒖IDA Clasification Soils Agricultural Experimental Station of Santa Rosa, M閞ida Acconding With Ninth edition of Key to Sail Taxonomy  

Microsoft Academic Search

The aim of this study was classified Soil's Agricultural Experimental Station of Santa Rosa of IIAP-ULA according with ninth edition of keys to Soil Taxonomy (Soil Survey Staff, 2003). A typical pedon described by Romero (1983) was used. Taxonomically, the soil was identified as: skeletal loamy\\/ loamy coarse, mixed, isotermic Humic Dystrudepts.

Pe馻 Guill閚




Microsoft Academic Search

Dry beans (Phaseolus vulgaris L.) is an alternative of production in a cereal-legume crop rotation because improves profitability and fixes atmospheric nitrogen to soil. Different tillage practices that leave crop residues on the surface, and minimally alerts composition, structure and natural biodiversity of soil are used to conserve the agriculture ecosystem. Biological fertilizers using vesicular-arbuscular mycorrhizal (Glomus intraradices) constitutes a

J. R. Salinas-Garc韆; A. D韆z-Franco; E. Garza-Cano; I. Garza-Cano



Efecto de la concentraci髇 y tiempo de contaminaci髇 de un suelo por petr髄eo en la germinaci髇 de semillas de ma韟 (Zea mays L.) cv. Himeca 95 Effect of oil concentration and contamination period on seed germination of corn (Zea mays L.) cv. Himeca 95  

Microsoft Academic Search

Venezuela is the third petroleum producer country of OPEC with 2,717,000 b\\/day, this huge production lead to contamination risks because of oil spills. Phytoremediation use plants to eliminate the contamination of environment. The objective of this work was evaluate the effect of different oil concentrations (0, 3 and 6 %) and three periods of sowing after oil spill occurrence on

Jes鷖 Rafael M閚dez-Natera; Celymar Roque; Kharym Zapata; V韈tor Alejandro Otahola-G髆ez


On-Site Wastewater Treatment Systems: Evapotranspiration Bed (Spanish)  

E-print Network

Fosa s?ptica de dos compartimentos Suelo arcilloso Piedra quebrada Cama de evapotranspiraci?n Mecha de absorci?n Sistemas individuales para el tratamiento de aguas negras Cama de evapotranspiraci?n Bruce Lesikar y Juan Enciso Promotores...

Lesikar, Bruce J.; Enciso, Juan



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


Efeito da obesidade sobre a for胊 dos m胹culos respirat胷ios e centro respirat胷io.  

E-print Network

??Background: The obesity affects many organs and systems of human body, prejudicing vital functions by immunologic, circulatory, hormonal and respiratory functions. On the respiratory system, (more)

Marcus Aur胠io Almeida da Rocha



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 ...


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

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.


Preguntas y respuestas: Redes de Poblaciones Especiales Para la Investigaci髇 y el Entrenamiento de Programas de Educaci髇 sobre el C醤cer

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?



E-print Network

, a Secretar铆a General de Universidades do Ministerio de Educaci贸n, Cultura y Deporte, emitiu no mes de xaneiro Ministerio de Educaci贸n, Cultura e Deporte ditou, o pasado 1 #12;3 de abril do 2014, unha segunda "nota

Fraguela, Basilio B.



Microsoft Academic Search

Effect of diets on biology and life table of Euseius concordis (Chant) (Acari: Phytoseiidae) Laboratory studies to obtain information about biology and life tables of the predatory mite Euseius concordis (Chant) were carried out. Mites were sampled in grapevines 'Criolla Negra', in Tarabana, Lara state, Venezuela. At the laboratory, E. concordis was fed on two sources consisting in minnieroot pollen

NOTA T蒀NICA; Carmen Escalona; Carlos V醩quez



"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



Efeito do consumo de suco de cranberry de baixa caloria sobre fatores de risco cardiovascular em indiv韉uos com s韓drome metab髄ica.  

E-print Network

??A S韓drome Metab髄ica (SM) um transtorno patol骻ico complexo que inclui resist阯cia insulina, hipertens鉶 arterial, adiposidade visceral e dislipidemia, aumentando o risco de desenvolvimento (more)

Tathiana Name Colado Sim鉶



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


Invent醨io de macroliquens ep韋i tos sobre 醨vores utilizadas na arboriza玢o urbana em Curitiba, Paran, Brasil: Subs韉io para biomonitoramento urbano  

Microsoft Academic Search

Inventory of epiphytic macrolichens on trees used in urban arborization in Curitiba, Paran, Brazil. The fl oristic composition of epiphytic macrolichens on the following tree species used in urban arborization in Curitiba was analysed: Acer negundo , Lagerstroemia indica , Ligustrum lucidum , Parapiptadenia rigida , Cassia leptophylla , Syagrus romanzof ana , Tabebuia alba , Tabebuia chrysotricha , Tabebuia

Sionara Eliasaro; Patr韈ia Wolf Veiga; Cristine Gobel Donha; Lucas Nogueira




Microsoft Academic Search

This longitudinal study evaluates the predictive validity of social sharing and expression of emotions about March-Eleven Madrid bombing. A questionnaire which measures social sharing of emotion, intensity of emotional arousal, rumination, subjective social support, loneliness, positive affect, benefices of trauma reaction and emotional climate was completed by around 1793 college students and student's relatives (38%) in six spanish cities and

D. P醗z Rovira; F. Mart韓ez-S醤chez; B. Rim



Microsoft Academic Search

This work was carried out aiming to evaluate the effect of delay storage and two cooling times on the quality of 'Gala' apples. Fruits were stored at 0.5篊, 96% RH and atmosphere with 1.1kPaO2 and 2.9kPaCO2. The storage period was delayed on 16, 22 or 28 hours after harvest and cooled slowly (3 days) or rapid (6 hours). The evaluations



Memorias del Cuarto Simposio Internacional Sobre Polticas, Planificacin y Economa de los Incendios Forestales: Cambio Climtico e Incendios Forestales  

E-print Network

, estimulada por las primeras lluvias, reinicia su periodo de crecimiento y desarrollo (Rodriguez-Trejo a la poblaci贸n en general (Rodriguez-Trejo y Ful茅 2003). Cuando el fuego es usado recurrentemente en

Standiford, Richard B.


ORDEM DE SERVIO 001/2010-GR Dispe sobre os procedimentos do Edital n 10, de 15  

E-print Network

(GRU) e efetuar o pagamento em dinheiro no Banco do Brasil. Art.4潞 Documenta莽茫o exigida: 搂1潞. C贸pia da carteira de identidade e do CPF, para brasileiros; 搂2潞. Se estrangeiro, carteira permanente de estrangeiro hist贸rico escolar e do certificado de conclus茫o do ensino m茅dio, se o curso foi realizado no Brasil; 搂7潞

Paran谩, Universidade Federal do



E-print Network

por d铆a. Estas exhalaciones fueron de baja a moderada intensidad, con emisiones de vapor de agua, gas vapor de agua y gas que se desplaz贸 en direcci贸n oeste-suroeste e increment贸 ligeramente la 2. a) Emisi贸n de vapor de agua y gas relacionada con la exhalaci贸n de moderada intensidad registrada

Arroyo Rodr铆guez, V铆ctor



Microsoft Academic Search

Este estudio recoge los resultados acerca de la oferta de las empresas de Turismo de Naturaleza (TN) del municipio de Cabo Corrientes, Jal. Las cuales no cuentan con propuestas formales de oferta, y esto disminuye en gran manera la competitividad, desarrollo y progreso de las empresas de TN, as como el crecimiento de la poblaci髇 rural que soporta a estas.

Rodrigo Espinoza S醤chez; Erika Ch醰ez F閘ix; Edmundo Andrade R; Rosa Ma. Ch醰ez D



Declaraci髇 del Instituto Nacional del C醤cer sobre la aprobaci髇 de la vacuna de VPH por la FDA

Hace casi dos d閏adas que los investigadores del NCI y de otras instituciones comenzaron a investigar las causas fundamentales del c醤cer cervical. Esta b鷖queda cient韋ica result en la aprobaci髇 de hoy de la vacuna GardasilTM por la Food and Drug Administration.


Fiscaliza玢o sobre a produ玢o e distribui玢o de carne bovina em Blumenau em 2006: pol韙icas p鷅licas do setor e desenvolvimento regional.  

E-print Network

??Existem doen鏰s que s鉶 transmitidas atrav閟 de alimentos contaminados. Este trabalho pretende mostrar as conseqncias da falta de fiscaliza玢o eficiente da vigil鈔cia sanit醨ia nas esferas (more)

Eliane Maria Maciel Salval醙io




Microsoft Academic Search

El sector terciario de la econom韆 ha crecido a pasos gigantescos en los 鷏timos a駉s. A nivel mundial, el desarrollo de diferentes empresas que brindan paralelamente los mismos servicios, ha hecho muy notable la competencia entre ellas, por lo que se ha intensificado la puesta en pr醕tica de la tecnolog韆 del marketing para lograr diferenciaci髇 en el mercado, formar parte

Yelenys D韆z Gonz醠ez; Roberto Carmelo Pons Garc韆



Las dif韈iles relaciones entre teor韆, pr醕tica y metodolog韆 en la psicolog韆 del siglo XXI. (I) Sobre algunas disyuntivas  

Microsoft Academic Search

Las decisiones pr醕ticas en las ciencias del comportamiento se han venido apoyando en conocimientos supuestamente obtenidos a partir de indagaciones que, tambi閚 supuestamente, siguen las normas de la investigaci髇 cient韋ica. Retomar la distinci髇 entre sistemas sociales y epistemol骻icos implicada en la oposici髇 entre el sistema ciencia-t閏nica y el sistema interacci髇-comunicaci髇 permite entender por qu la llamada 搃nvestigaci髇 cient韋ica en el

Juan Delgado S醤chez-Mateos



Concepciones sobre la ense馻nza y difusi髇 del patrimonio en las instituciones educativas y los centros de interpretaci髇. Estudio descriptivo  

Microsoft Academic Search

Desde una perspectiva interdisciplinar (did醕tica de las ciencias sociales y did醕tica de las ciencias experimentales), se realiza un an醠isis de concepciones de una muestra estad韘tica de profesores y gestores en relaci髇 con el patrimonio, su ense馻nza y difusi髇. Como instrumento para la obtenci髇 de la informaci髇 se ha dise馻do un cuestionario, cuyo contenido se ha determinado en funci髇 de un

Jes鷖 Estepa Gim閚ez; Rosa Ma. 羦ila Ruiz; Roc韔 Ruiz Fern醤dez




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



Efeito do extrato da casca de Syzygium cumini sobre a atividade da acetilcolinesterase em ratos normais e diab閠icos  

Microsoft Academic Search

The present study verified the efficiency of the bark ethanol extract of Syzygium cumini on the cholinergic system of normal and alloxan induced diabetic rats. Thirty-nine female rats were divided in control (C), treated with Syzygium cumini (TS), diabetic (D) and diabetic treated with Syzygium cumini (DS). The activity of acetylcholinesterase (AChE) was analyzed in the following cerebral structures: cerebellum,

Cinthia Melazzo Mazzanti; Deila Ros閘y Schossler; Andreane Filappi; Dan韛ia Prestes; Adriane Cismoski Silva; Maisa Correa; Maria Rosa Chitolina Schetinger; Vera Maria Morsch; Gilberto Lunkes; Wellington de Abreu Gonzaga; Marcelo Cecim



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



The ABCs of Special Education: A Handbook for Parents = El ABS Sobre Educacion Especial: Un Folleto para los Padres.  

ERIC Educational Resources Information Center

This bilingual handbook is intended to help parents understand their rights under P.L. 94-142, the Education for All Handicapped Children Act. The following topics are addressed: the Act's legislative history, identification of special education, explanation of P.L. 94-142, parents' rights to know, student records, student testing, students'

Ewing, Preston E., Jr.; Hinton, Valeska S.


Personal Safety for Children: A Guide for Parents = Una guia para los padres sobre la seguridad personal de los ninos.  

ERIC Educational Resources Information Center

Noting that parents and teachers have the responsibility of safeguarding children and teaching them the skills they need to be safe, this pamphlet, in Spanish and English versions, is designed to help parents talk to their children about how to protect themselves against abduction and exploitation. The pamphlet is organized into six sections.

Department of Justice, Washington, DC.


Observa珲es sobre o comportamento reprodutivo de Ictinia plumbea (Falconiformes: Accipitridae) no Campus da Universidade Estadual de Maring, Paran, Brasil  

Microsoft Academic Search

Observations on breeding behavior of Ictinia plumbea (Falconiformes: Accipitridae) in the Campus of the Maring State University, Paran State, Brazil. The breeding behavior of Ictinia plumbea (Falconiformes: Accipitridae) was studied in the Campus of the Maring State University, Paran State, Brazil. Two nests of Ictinia plumbea were found in the Campus of the Maring State University, Paran State, southern Brazil

Alan Loures-Ribeiro; M醨cio Rodrigo Gimenes



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



Microsoft Academic Search

This article refers to the first phase of a survey on nursing students' representations on death and dying. The research has an exploratory character and was carried out with first year students of the undergraduate course in Nursing of the Federal University of S鉶 Paulo. Its objectives were to know the impressions of the students concerning the theme \\

Jos Roberto da Silva; Jos Rodrigo de Oliveira; Lie Yamaguti


EFEITO DE EXTRATOS DE NIM (Azadiractha indica) E CINAMOMO (Melia azedarach) SOBRE Anastrepha fraterculus (WIED.) (DIPTERA:TEPHRITIDAE)  

Microsoft Academic Search

EFFECT OF NEEM (Azadiractha indica) AND CHINABERRY (Melia azedarach) FRUIT EXTRACTS ON Anastrepha fraterculus (WIED.) (DIPTERA:TEPHRITIDAE). In laboratory trials, treatments of fruit extracts of Azadiractha indica (neem) and Melia azedarach (chinaberry) reduced laying, larval and pupal development of the South American fruit fly, Anastrepha fraterculus (Wied.) (Diptera:Tephritidae). Larvae died without molting; pupae were malformed and adults were not able to



Microsoft Academic Search

Effects of the plant density on the vegetative and reproductive growth in strawberry cv. Elsanta The manipulation of plant density is a tool used to optimize the yield in strawberry. However, both the vegetative and reproductive growth are affected by this practice. Furthermore, the effect of plant density depends on the cultivar, agronomic management, and environmental conditions. In this research,

Mar韆 P閞ez de Camacaro; James Carew; Nick Battey


Prediccin de los impactos del cambio climtico en la distribucin sobre las especies de Lepidoptera. El caso  

E-print Network

Lepidoptera. El caso del g茅nero Boloria Moore, 1900 en la Pen铆nsula Ib茅rica (Lepidoptera: Nymphalidae) H. Romo distribuci贸n de los Lepidoptera, lo que podr铆a afectar m谩s a especies propias de monta帽a en zonas templadas tendencias se confirman. PALABRAS CLAVE: Lepidoptera, Nymphalidae, Boloria, cambio clim谩tico, AUC, Max

Garc铆a-Barros, Enrique


Las Sociedades Portuarias Regionales en el comercio exterior colombiano: Una rese馻 sobre la importancia del Puerto de Buenaventura. 1990 - 2004  

Microsoft Academic Search

Este documento analiz la evoluci髇 de la movilizaci髇 de carga de los principales terminales Mar韙imos2 del pa韘 entre los a駉s 1990-2004, con el objetivo de conocer el puerto que moviliza mayor cantidad de carga en el comercio exterior colombiano. Los resultados revelaron que la mayor parte de la carga exportada e importada en Colombia se realiz por v韆 mar韙ima (95.9%),

Jaime Andr閟 Collazos; Santiago Borrero



T閏nica de restri玢o h韉rica: efeito sobre Acremonium strictum, protrus鉶 de sementes e obten玢o de sementes de milho infetadas  

Microsoft Academic Search

Water restriction technique: effect on Acremonium strictum, seeds protusion and obtaining of maize seeds infected This work was carried out to obtain maize (Zea mays) seeds with Acremonium strictum, by means of an adapted water restriction technique, in order to use them in pathogen-host studies. An evaluation was made of the effects of mannitol, NaCl and KCl at potentials of

Hudson Teixeira; Jos da Cruz Machado; Denis Oride; Marcelo C. Alves; Alexandre Noda



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)



M寐 Conceptos Err寐硁eos a Evitar en la Ense寐盿nza sobre las Plantas  

NSDL National Science Digital Library

The resource is useful for teacher's professional development by alerting educators to many plant misconceptions in teaching literature. In the thought provoking, peer reviewed resource fifty misconceptions are identified. Some misconceptions are easier to identify because they are oversimplifications, overgeneralizations, or misidentifications. Others are more difficult to identify because they are obsolete concepts and terms or flawed research.

David Hershey (biology education consultant;)




Microsoft Academic Search

Residual effect of legume intercroping on corn (Zea mays L.) yield in nine localities in Central America. Nine trials were conducted, in like number of localities in Central America in 1990 and 1991, to evaluate the effect of legume intercropping on corn yield. The first cycle was evaluated in 1989 and 1990, when trhree legumes were planted with doses of

Jos Luis Zea


Apuntes sobre el financiamiento y costos de la producci髇 teatral en la ciudad de M閤ico durante el a駉 de 1976  

E-print Network

se concret en los siguientes puntos: a) registro de los espect醕ulos y de las obras que fueron representados en el 醨ea metropolitana y en su periferia, sin discriminaci髇 ni de g閚eros ni de calidad o nivel de las realizaciones; b) nombre y...

Mendoza Ló pez, Margarita



Dos ensayos sobre discriminaci髇: discriminaci髇 salarial y discriminaci髇 en acceso al empleo por origen 閠nico y por g閚ero  

Microsoft Academic Search

El existencia o no de la discriminaci髇 en el mercado laboral ha sido un tema dif韈il de analizar. Comencemos por aclarar que para los prop髎itos de esta investigaci髇, discriminaci髇 es un t閞mino que aplica a grupos claramente identificables por sus caracter韘ticas f韘icas, religiosas, 閠nicas, por sus pr醕ticas sociales, o por cualquier otro rasgo f醕ilmente observable1. En principio existe discriminaci髇 si

Jaime Tenjo Galarza; Paula Herrera Id醨raga




Microsoft Academic Search

The aim of the experiment was to determine the 韓fluence .of the degree of early visual stimulation on adult discrimination leaming. iorty eight mice were raised from birth to the age of 90 days in three litua- tions of visual disaimination: (a) Superstimulation, three-dumens韔n visual stimuli with differente forms and colon attached to the wall of the eages. (b) Control,



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...


General Information about Learning Disabilities (Fact Sheet Number 7) = Informacion General sobre Impedimentos en el Aprendizaje (Fact Sheet Number 19).  

ERIC Educational Resources Information Center

This fact sheet providing general information about learning disabilities is presented in both English and Spanish versions. It begins with the federal definition of learning disabilities and a discussion of its implications followed by estimates of incidence. Typical characteristics of students with learning disabilities are then summarized as

Interstate Research Associates, Inc., Washington, DC.


LO SABA?... Jobbagy, Mercau & Nosetto  

E-print Network

, un ingreso al suelo de 20 mm de agua (una lluvia de 25-30 mm) genera un ascenso fre谩tico de 10 cm zona saturada (todos los poros ocupados por agua) del perfil de un suelo/sedimento. Los hidr贸logos las llaman acu铆feros fre谩ticos y las asocian a estratos de buena conductividad capaces de ofrecer agua al

Nacional de San Luis, Universidad


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



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.



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, 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; 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



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 脿s cidades/metr贸poles? T铆tulo Redes de transporte e produ莽茫o do in "Di谩logos Brasil Fran莽a 2012 Construir a metr贸pole contempor芒nea, Sao Paulo : Brazil (2012)" #12;Redes de que qualquer espa莽o pode ser analisado e concebido considerando-o como um lugar, como uma rede ou como

Paris-Sud XI, Universit茅 de



E-print Network

DE LA CONVOCATORIA DE AYUDAS ERASMUS FINANCIADAS POR EL MINISTERIO DE EDUCACI?N, CULTURA Y DEPORTE EN convocatoria de ayudas Erasmus financiadas por el Ministerio de Educaci贸n, Cultura y Deporte en el marco del disponible en la sede electr贸nica del Ministerio de Educaci贸n, Cultura y Deporte un formulario que debe ser

Rey Juan Carlos, Universidad



Microsoft Academic Search

We registered the phenology (flowering, fruiting) and evaluated the effect of Tegeticula yuccasella Riley (Lepidoptera:Prodoxidae) on seed production of Yucca filifera Chabaud (Agavaceae). Yucca filifera flowered only once during 1998, from February to May, with peak flowering in March-April. The moth exhibited a 67% of pollinating efficiency and 3.8% of seed mortality by larvae. The highest density of T. yucassella



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



Tax and Record Keeping Information for Family Child Care = Informacion Sobre los Impuestos y la Documentacion para el Cuidado Infantil en el Hogar.  

ERIC Educational Resources Information Center

This pamphlet from the Children's Foundation, in both English- and Spanish-language versions, provides advice to child care providers on record-keeping methods. The pamphlet also gives definitions and guidance on business expenses (100% deductible, shared personal and business, and depreciated capital expenses), time-space formula, self-employment

Gellert, Sandra


Parenting Information for Parents: Books 1-3 (Informacion Para Los Padres Sobre La Crianza De Los Hijos: Libros 1-3).  

ERIC Educational Resources Information Center

These 3 booklets provide ideas, guidelines, and activities for establishing effective parenting and are part of a series of 22 booklets specifically designed to help parents understand their children and help them to learn. The first booklet (booklet #20) discusses preparation for parenthood, infant and toddler developmental stages, the importance

Moreno, Steve



Microsoft Academic Search

Effect of diets on biology and life table of Euseius concordis (Chant) (Acari: Phytoseiidae) Laboratory studies to obtain information about biology and life tables of the predatory mite Euseius concordis (Chant) were carried out. Mites were sampled in grapevines 'Criolla Negra', in Tarabana, Lara state, Venezuela. At the laboratory, E. concordis was fed on two sources consisting in minnieroot pollen

Carmen Escalona; Carlos V醩quez


Efeito da disponibilidade de s韙ios de nidifica玢o sobre o sistema de acasalamento e o cuidado paternal em um opili鉶 neotropical (Arachnida: Opiliones).  

E-print Network

??Cavidades naturais constituem um recurso reprodutivo monopoliz醰el, cuja disponibilidade determina a intensidade da competi玢o macho-macho que, por sua vez, pode influenciar os custos do cuidado (more)

Rachel Miranda Werneck




Microsoft Academic Search

Grey Eagle-buzzard (Geranoaetus melanoleucus) and Magellanic Horned Owl (Bubo magellanicus) predation on chinchill髇 (Lagidium viscacia) in northwestern Patagonia, Argentina. The chinchill髇, Lagidium viscacia (Molina, 1782), is a medium-sized rodent which inhabits rocky habitats along the Andean Cordillera, from Peru to southern Argentina and Chile. Predators on this species are not well-known. Long-term studies re- cently made in Patagonia showed no

Gladys I. Galende; Ana Trejo


Datos estadsticos sobre la primera fase del programa de difusin Digital.CSIC Actividades de formacin. Sesiones de difusin en centros e institutos del CSIC  

E-print Network

/01/2008 11:30 30 007 Instituto de Microelectr贸nica de Madrid (IMM-CNM) IMM-CNM 01/02/2008 12:00 15 008 Centro IMB-CNM 018 Institut Bot谩nic de Barcelona (IBB) IBB 18/02/2008 10:00 20 019 Instituci贸 Mil脿 i Instituto de Microelectr贸nica de Sevilla (IMSE-CNM) IMSE-CNM 31/03/2008 10:00 7 040 Centro Andaluz de


El primer examen de las Pruebas de Acceso a la Universidad en la UA se centra en un texto sobre Torrente de Santiago Segura  

E-print Network

Torrente de Santiago Segura Alicante, 9 de junio de 2011 "Torrente y la clase pol铆tica". Con este art铆culo, Torrente, la clase pol铆tica actual en Espa帽a y la o las crisis que vive el pa铆s, ha sido el escogido para

Escolano, Francisco


"Que vienen los lobos!" (Breve nota sobre el plural de los apellidos) ("May The Wolves Come:" [A Brief Note on the Plural of Surnames])  

ERIC Educational Resources Information Center

This article discusses the problems that arise with the formation of plural forms of surnames in Spanish, problems both with morphology and with ambiguity. Suggestions as to how to lessen problems are made. (Text is in Spanish.) (CLK)

Vivaldi, Gonzalo Martin



Dos laborat髍ios aos pontos de venda: uma an醠ise da trajet髍ia dos alimentos funcionais e nutrc陁ticos e da sua repercuss鉶 sobre a quest鉶 agroalimentar.  

E-print Network

??Alimentos funcionais e nutrac陁ticos s鉶 apresentados como alimentos que, al閙 de suas fun珲es b醩icas nutricionais, demonstram benef韈ios fisiol骻icos e/ou reduzem o risco de doen鏰s cr鬾icas. (more)

Marco Antonio Ferreira de Souza



SECADO DE FORRAJE CON EL HORNO MICROONDAS: EFECTO SOBRE EL AN罫ISIS DE CALIDAD Microwave oven forage drying: effects on quality analysis  

Microsoft Academic Search

A B S T R A C T The objectives were to utilize a microwave oven (HM) to determine dry matter (MS) and evaluate its effect on dry matter (MS), organic matter content (MO), in vitro organic matter digestibility (DIVMO), brute protein (PB), acid detergent fiber (FDA), and acid-detergent insoluble nitrogen (NIDA). We utilized the forage species: Medicago sativa L.,

Roberto J. Crespo; Jorge A. Casta駉; Jos A. Capurro



Consideraciones hist髍icas de las normativas sobre el consumo de alcohol, drogas y medicamentos en el modelo espa駉l de valoraci髇 psicof韘ica de los conductores  

Microsoft Academic Search

ObjectiveTo observe the aspects of assessment relating to the inappropriate consumption of alcohol, drugs and medicines, which have periodically been compulsory in drivers medical examinations since assessments began in Spain.

M. Ozcoidi Val



Visi髇 de los diferentes agentes sociales sobre la participaci髇 social en el sistema de salud en el nordeste de Brasil: una aproximaci髇 cualitativa  

Microsoft Academic Search

Concepts and opinions on social participation in health held by different groups of stakeholders in North-eastern Brazil. A qualitative study Background: Social participation in the health system constitutes one of the basic principles of Brazilian health sector reform. This paper analyses the concepts held by different groups of stakeholders with respect to social participation in health and identifies their opinions

M Luisa V醶quez Navarrete; M Rejane Ferreira da Silva; Eliane Siqueira Campos; Ana Paula Campos Pereira; Alcides da Silva Diniz; Ida Leite Veras; Ilma Kruze Grande de Arruda



Propuesta de ajuste al marco regulatorio sobre Acceso a Recursos Gen閠icos y Productos Derivados, y a la Decisi髇 Andina 391 de 1996  

Microsoft Academic Search

La adecuaci髇 del r間imen de ARG resulta inaplazable. La importancia mundial de la biodiversidad y el potencial de los recursos biogen閠icos en diversos sectores de producci髇 hacen imperativo el establecimiento de un r間imen de acceso que facilite la realizaci髇 de investigaci髇 cient韋ica dentro del marco jur韉ico. La posibilidad de captar los beneficios derivados de su utilizaci髇 en beneficio del pa韘

Autores varios


La influencia de la cultura sobre la b鷖queda de informaci髇. El caso de la vivienda para 'turismo residencial' en la Costa Blanca  

Microsoft Academic Search

The influence of culture in the buying decision process is analyzed by focusing on the information seeking behaviour for a product representing a complex decision making. The literature proves the importance of culture for the decision process while there are hardly any studies available for the real-estate sector. Using a cultural specific approach, the influence of culture (represented by the

Andreas Kanther; Francisco Jos Sarabia S醤chez; Jos Francisco Parra Azor



Efectos del turismo y del capital humano sobre el desarrollo economico de las regiones espa駉las: Analisis comparativo con la Uni髇 Europea, 1985-2000  

Microsoft Academic Search

We analyse the effectos of tourism and other factors on regional development, including not only hotel tourism but also non hotel tourism, both of them with important effects on building and services activities, in order to compare Spanish regions with European Union regions. We find that while several Spanish regions are outstanding regions in the EU rankings of tourism development,

M. C. Guisan; Eva AGUAYO



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




Microsoft Academic Search

La presente investigaci髇 tiene su inicio en un estudio de Comunicaci髇 establecido en la Sede Universitaria Municipal 揅醤dido Gonz醠ez Horta del municipio Colombia durante el a駉 2010, con el prop髎ito de integrar la carrera de Comunicaci髇 Social a la promoci髇 y divulgaci髇 del Sistema de Ciencia e Innovaci髇 Tecnol骻ica (SCIT) del CITMA en el territorio. Este estudio comprende la realizaci髇

Jorge Tamayo Aroche; Lian Mart韓ez Rodr韌uez; Antonio Inocente Gonz醠ez N醦oles



Evaluaci髇 de un compuesto de antioxidantes sobre los par醡etros seminales de concentraci髇, movilidad y morfolog韆 esperm醫ica en pacientes con oligoastenoteratozoospermia idiop醫ica  

Microsoft Academic Search

IntroductionNowadays, the masculine factor is the person in charge of form isolated of 40 % of the cases of infertility of pair, sharing this protagonism of additional form in 20 % close to the feminine factor, for what of joint form, it represents 50 % of all the cases. In spite of the lack of scientific evidence, the empirical treatment

Jes鷖 Mateos Blanco; Juan Alonso Cabo Gonz醠ez



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

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


Detecci髇 del Efecto de un Extracto Vegetal Antimicrobiano Sobre Plantas de Agave (Agave tequilana Weber var. azul) Cultivadas in vitro Utilizando Fluorescencia Inducida por Laser (LIF)  

Microsoft Academic Search

The use of antimicrobial compounds derived from plants is an alternative to avoid o reduce the negative effects that antibiotics have shown on development and growth of plant species in vitro. In this work, the laser-induced fluorescence was used as a non-invasive and non-destructive tool to detect the effect of the addition of the commercial grapefruit extract (citricidal ) on

Eva Noem Obledo-V醶quez; Norma Flores-Verduzco; Jes鷖 Cervantes-Mart韓ez; Centro de Investigaci髇; Asistencia en Tecnolog韆; Guadalajara Jalisco



Calidad de los datos del contenido en 醕ido f髄ico en vegetales recogidos en varias tablas de composici髇 de alimentos espa駉las, y nuevos datos sobre su contenido en folatos  

Microsoft Academic Search

The relationship between adequate folate intake, ade- quate serum levels, and lowering the risk of suffering from cardiovascular diseases, neural tube defects, neural illness and some kind of cancers have been widely stu- died. Because of the expected health benefits, the con- sumption of foods with high folate content or enriched foods is increasing. Therefore, an adequate folate intake is

A. B. Olivares; M. J. Bernal; G. Ros; C. Mart韓ez; M. J. Periago



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...



Microsoft Academic Search

The purpose of this research was to establish the state of art from the thesis works done in faculties of psychology members of ASCOFAPSI in Bogot city, from 1998 to 2003, about psychological factors involved in organizational culture. It was a qualitative documental research in a state of art. A Data Collection Card was used and adapted for the research



Influ阯cia do desenvolvimento florestal sobre a comunidade ed醘ico-ep韌ea de Arthropoda e a mirmecofauna: bases para a bioindica玢o do processo sucessional na restaura玢o ecol骻ica.  

E-print Network

??A restaura玢o ecol骻ica visa o estabelecimento de ecossistemas semelhantes aos que originalmente ocupavam uma determinada 醨ea que foi degradada. Todavia, os resultados dos esfor鏾s envolvidos (more)

Fernando Meloni



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


Fronteras del saber cientfico: reflexin epistemolgica sobre las investigaciones fundamentales y praxeolgicas en las ciencias de la educacin en torno al trabajo  

E-print Network

praxeol贸gicas en las ciencias de la educaci贸n en torno al trabajo docente1 Javier NUNEZ MOSCOSO Doctorando en Ciencias de la Educaci贸n2 UMR 颅 EFTS (Education, Formation, Travail, Savoirs) Universit茅 de Toulouse II le de Chile, Facultad de Educaci贸n Correspondencia: Resumen Las ciencias de la

Paris-Sud XI, Universit茅 de



Microsoft Academic Search

SUMMARY In this article, principles of one model for male and female Science teacher formation are discussed, considering as its basis the dialogical and critical reflection on concepts and practices, between the teacher and his\\/her tutor. The dialogical reflection takes place due to problems located in a concrete environment, which are scrutinized in the light of modern theoretical references regarding




Microsoft Academic Search

The objective of the study consists in analysing the effect of physical activity and sport on adolescents' healthy lifestyles. The study was conducted with a representative sample of teenagers between 11 and 15 years of age (N =

Isabel Castillo; Isabel Balaguer; Marisa Garc韆-Merita


Efecto de la adici髇 de harina de soja y concentrado proteico de suero de queso sobre la calidad del pan y la dializabilidad de minerales  

Microsoft Academic Search

SUMMARY. Effect of the addition of soy flour and whey pro- tein concentrate on bread quality and mineral dialyzability. The effects of the addition of soy flour and whey protein concentrate (WPC) on dough properties and mold bread quality were studied. Farinograph and alveograph were used to evaluate dough proper- ties. Mold bread quality was evaluated by assessing sensory attributes

Alexis N. Visent韓; Silvina R. Drago; Carlos A. Osella; Mar韆 A. de la Torre; Hugo D. S醤chez; Rolando J. Gonz醠ez


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.


El Movimiento de Trabajadores sin Tierra de Brasil: notas sobre su intervenci髇 est閠ica en la pol韙ica Landless Laborers Movement of Brazil: Notes on its aesthetic intervention in politics  

Microsoft Academic Search

This work aims to point out on some relevant aspects of the demonstrations of the No Land Laborers Movement of Brazil based on the intersection between two classically one another disconnected categories in many of the analysis related to social movements. Thus, the relation- ship between aesthetics and politics can be tackled as a strategic alliance in the construction of

Elsa Ponce


Efecto de la ventilaci髇 por presi髇 positiva sobre los par醡etros productivos de pollo de engorda, durante siete semanas en casetas de ambiente natural  

Microsoft Academic Search

The effect of positive pressure ventilation upon productive performance of commercial broilers was evaluated. 1524 one- day-old Peterson x Avian Farm unsexed chicks were housed in a natural environment house with two sections; each section was divided into six subsections. Birds were randomly assigned in two groups with six repetitions each one. In the section where the experimental birds were

Daniel Marrufo Villa



Television Viewing = Lo que los padres de estudiantes dotados necesitan saber sobre ver...television. What Parents of Gifted Students Need To Know about...Series.  

ERIC Educational Resources Information Center

This booklet (Practitioner's Guide), in both an English version and a Spanish version, is intended to help parents apply the findings of research to parental mediation of television viewing by their children, including gifted children. Research facts are briefly summarized and implications for the home are drawn. Suggestions for parents are

Siegle, Del, Ed.


Lo Que los Padres y los Maestros Deberian Saber sobre la...Aceleraction (What Parents and Teachers Should Know about Academic Acceleration).  

ERIC Educational Resources Information Center

Designed for Spanish-speaking educators and parents, this pamphlet discusses academic acceleration for gifted children. Major types of academic acceleration and their benefits are described. These include: (1) early admission to kindergarten that saves parents of gifted children the expenses of a year of preschool, allows children to be

Guenther, Alex


Early Readers = Lo Que los padres necesitan saber sobre los...Lectores Precoces. What Parents Need To Know about...Series.  

ERIC Educational Resources Information Center

This pamphlet (Practitioner's Guide), in both an English version and Spanish version, is intended for parents of precocious readers. Research facts on early reading are briefly summarized. Implications for the classroom and home are offered and include a discussion of early school entrance, principles of reading instruction, and ways the parent

Siegle, Del, Ed.


Kathy Finds Out about the Introduction of Solids. Mother-to-Mother Support = Josefa Descubre Conocimientos sobre la Introduccion de Solidos. Apoyo Madre a Madre.  

ERIC Educational Resources Information Center

These magazine-sized booklets, one in English, one in Spanish, are in cartoon format and are designed to be used by people with limited literacy in English or Spanish. This booklet explains that exclusive breastfeeding means giving no water, liquids, or food; breast milk contains sufficient water to satisfy the baby's thirst; at about 6 months,

Magalhaes, Rebecca; Stone-Jimenez, Maryanne; Allen de Smith, Paulina; Smith, Natalia


DISCUSS肙 SOBRE INTOXICA钦ES POR MEDICAMENTOS E AGROT覺ICOS NO BRASIL DE 1999 A 2002 Discussion about Medication and Pesticide Poisonings in Brazil from 1999 to 2002  

Microsoft Academic Search

RESUMO: Medicamentos e agrot髕icos s鉶 intensamente consumidos e os contextos produtivos e mercadol骻ico nos quais estes est鉶 inseridos aproximam os riscos sa鷇e e ao meio ambiente relacionados sua utiliza玢o, dentre os quais est鉶 as intoxica珲es, cujos principais agentes s鉶 os medicamentos e agrot髕icos. Objetivos. Discutir o padr鉶 de intoxica珲es por medicamentos e agrot髕icos no Brasil, mostrando a aproxima玢o

Reginaldo T. Mendon鏰; Jaqueline L. Marinho



Microsoft Academic Search

A study on the adoption of improved bean varieties in the main bean producing areas of the Brunca Region in Costa Rica. Three bean varieties were released in Costa Rica during the years 2000-2004 (Bribri, 2000, Cabecar, 2003 and Telire, 2004). The process of production and release of these varieties was conducted through the use of participative breeding (PB) methodology,

Juan Carlos Hern醤dez-Fonseca; Flor Ivette Elizondo-Porras



Efectos de extractos acuosos de la maleza Cyperus rotundus L. (Cyperaceae) sobre la germinaci髇 de semillas y crecimiento de pl醤tulas de ma韟 (Zea mays L.) cv. Pioneer 3031  

Microsoft Academic Search

The objective of this experiment was to determine the effects of foliage water extracts of purple nutsedge (Cyperus rotundus L.) on seed germination and seedling growth of corn ( Cyperus rotundus L.) on seed germination and seedling growth of corn ( Cyperus rotundus Zea mays L.) cv. Pioneer 3031. An extract was prepared with nutsedge foliage of 15 days at

Jos A. Laynez-Garsaball; Jes鷖 Rafael M閚dez-Natera


Efecto de la concentraci髇 de hidr髕ido de calcio y tiempo de cocci髇 del grano de ma韟 (Zea mays L.) nixtamalizado, sobre las caracter韘ticas fisicoqu韒icas y reol骻icas del nixtamal  

Microsoft Academic Search

SUMMARY. Effect of calcium hydroxide concentration and cooking time of corn grain (Zea mays L.) nixtamalized, over physi- cochemical and rheological nixtamal characteristics. The effect of calcium hydroxide (Ca(OH) 2 ) concentration and cooking time on physicochemical and pasting properties of maize, during traditional nixtamalization was evaluated. It was observed that the higher the Ca(OH) 2 concentration and cooking time



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....


Impactos s骳io-culturais da evolu玢o dos jogos eletr鬾icos e ferramentas comunicacionais: um estudo sobre o desenvolvimento de comunidades virtuais de jogadores  

Microsoft Academic Search

This work studies the evolutionary process of electronic games, virtual communities and communicational tools and their impact on social interaction and culture. Additionally, an analysis is presented about different types of metacommunication developed in the communities formed by online games. Finally a conclusion is presented towards the future of those communities and the new communicational tools provided by technological advancement.

Lia Carrari; Rodrigues Rodrigo; A. S. Pereira; Lopes Pollyana; Notargiacomo Mustaro


Kinetics of methane oxidation in selected mineral soils  

NASA Astrophysics Data System (ADS)

The kinetic parameters of methane oxidation in three mineral soils were measured under laboratory conditions. Incubationswere preceded by a 24-day preincubationwith 10%vol. of methane. All soils showed potential to the consumption of added methane. None of the soils, however, consumed atmospheric CH4. Methane oxidation followed the Michaelis-Menten kinetics, with relatively low values of parameters for Eutric Cambisol, while high values for Haplic Podzol, and especially for Mollic Gleysol which showed the highest methanotrophic activity and much lower affinity to methane. The high values of parameters for methane oxidation are typical for organic soils and mineral soils from landfill cover. The possibility of the involvement of nitrifying microorganisms, which inhabit the ammonia-fertilized agricultural soils should be verified.

Walkiewicz, A.; Bulak, P.; Brzezi駍ka, M.; W?odarczyk, T.; Polakowski, C.



Anthropogenic transformation of soils in the Pokrovskoe-Streshnevo Park (Moscow) and adjacent residential areas  

NASA Astrophysics Data System (ADS)

The diversity of soils within the specially protected natural territory of Pokrovskoe-Streshnevo in Moscow is discussed. The soils of this large park are not affected by the modern construction activities that delete the features inherited from the early stages of the anthropogenic transformation of soils in Moscow. They are characterized by the book-like type of soil memory, which makes it possible to trace several sequences of the anthropogenic soil transformation. The background natural soils-rzhavozems (Chromic Cambisols)梙ave been transformed into agrogenic soils (agrosols) and postagrogenic soils (postagrosols) under abandoned plowlands, into urbo-soils and urbanozems in the areas of former or modern settlements, and into techno-soils in the areas of active excavation works and engineering reclamation. The change in the character of the land use without the accumulation of osediments on the surface leads to the development of polygenetic soil horizons.

Prokof'eva, T. V.; Poputnikov, V. O.



Visualization and quantification of the entrapped air bubbles by neutron imaging  

NASA Astrophysics Data System (ADS)

Preferential flow in structured soils may be accompanied by a significant temporal variation of quasi saturated hydraulic conductivity. These effects, observed in number of experiments mainly on heterogeneous soil of Cambisol series, are sometimes attributed to a changing distribution of the entrapped air within the sample. We have reproduced the variation of the quasi steady state flow during the constant head ponded infiltration experiment on the packed sample composed of three different grades of quartz sand, and visualized the water distribution during i) the initial stages of infiltration by neutron radiography and ii) during the steady state flow by neutron tomography. Provided that the hydraulic gradient is known, in the case of the experiment with ponding at the top and the seepage face at the bottom of the sample, the effective quasi-saturated (or satiated) hydraulic conductivity (KQS) is known. Gradual decrease of the KQS has been observed during first four hours of the infiltration event. Series of neutron tomography images taken during the quasi-steady state stage have detected trapping of the air bubbles in coarser sand. Furthermore, the volume of a number of entrapped air bubbles increased during the infiltration event. The fraction of the entrapped air was calculated for a series of tomography images taken during each experiment. Similarly to previous experiments performed on natural Cambisols, experimental results support the hypothesis that the effect of the gradual KQS decrease is caused by the entrapped air redistribution and the build-up of bubbles in preferential pathways. The trapped air thus restricts the preferential flow pathways and causes a lower hydraulic conductivity.

Snehota, Michal; Jelinkova, Vladimira; Sobotkova, Martina; Sacha, Jan; Cislerova, Milena; Vontobel, Peter



Formation of soil diversity in the mountainous tropics and subtropics: Rocks, time, and erosion  

NASA Astrophysics Data System (ADS)

The diversity of soils and complexity of soil cover in humid tropics and subtropics, especially in the mountain regions, cannot be fully explained by climatic control over soil formation. The objective of the research was to investigate the role of time and erosion processes as factors controlling soil diversity in humid tropical and subtropical mountains that differ in the characteristics of the parent rocks. The study is based on the concept of two main pathways of the weathering of silicate rocks, depending on whether phyllosilicates are present or lacking in their composition. This has a direct relationship to thickness and properties of the weathered mantle. A chronosequence of soils on river and marine terraces developed on weathered chloritized diabase porphyrites were studied in humid subtropics of the South Caucasus, on the eastern coast of the Black Sea, Georgia. On a terrace sequence with sand and pebble marine sediments that ranges in age from 1000 to 500 000 years, Regosols, Ferralic Cambisols, Haplic Nitisols and Stagnic Acrisols are defined as consecutive stages of time-dependent soil formation. An erosional soil sequence in the hilly-mountain area of this region shows "regressive soil development", from Stagnic Acrisols to Regosols/Leptosols. The erosion truncates relatively thick pre-erosion soils and regolith layer-by-layer; the exposed deep horizons play the role of parent rock for soil formation. In addition, soil sequences traced across hillslopes composed of serpentinite, ultrabasic and sedimentary rocks devoid of phyllosilicates have been studied in tropical regions of western Cuba. A mosaic of Ferralsols, Cambisols and Leptosols was formed under erosional impact on pre-erosion shallow soils and regolith. Time-dependent and erosion-dependent regularities of pedogenesis play an essential role in soil diversity and usually complicate initial soilscape, leading to formation of soils typical for extra-tropical/subtropical conditions.

Gracheva, R.



Organic carbon distribution, speciation, and elementalcorrelations within soil microaggregates: applications of STXM and NEXAFSspectroscopy  

SciTech Connect

Soils contain the largest inventory of organic carbon on the Earth's surface. Therefore, it is important to understand how soil organic carbon (SOC) is distributed in soils. This study directly measured SOC distributions within soil microaggregates and its associations with major soil elements from three soil groups (Phaeozem, Cambisol, and Ultisol), using scanning transmission X-ray microscopy (STXM) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy at a spatial resolution of 30 nm. Unlike previous studies, small intact soil microaggregates were examined directly in order to avoid preparatory procedures that might alter C speciation. We found that SOC exists as distinct particles (tens to hundreds of nm) and as ubiquitous thin coatings on clay minerals and iron-oxides coatings. The distinct SOC particles have higher fractions of aromatic C than the coatings. NEXAFS spectra of the C coatings within individual microaggregates were relatively similar. In the Phaeozem soil, the pervasive spectral features were those of phenolic and carboxylic C, while in the Cambisol soil the most common spectral feature was the carboxyl peak. The Ultisol soil displayed a diffuse distribution of aromatic, phenolic, and carboxylic C peaks over all surfaces. In general, a wide range of C functional groups coexist within individual microaggregates. In this work we were able to, for the first time, directly quantify the major mineral elemental (Si, Al, Ca, Fe, K, Ti) compositions simultaneously with C distribution and speciation at the nm to {mu}m scale. These direct microscale measurements will help improve understanding on SOC-mineral associations in soil environments.

Wan, Jiamin; Tyliszczak, Tolek; Tokunaga, Tetsu K.



Disturbances can control fine-scale pedodiversity in old-growth forests: is the soil evolution theory disturbed as well?  

NASA Astrophysics Data System (ADS)

Biota-soil interactions in natural ecosystems are the subject of considerable research. Our hypothesis is that individual trees play a significant role through biomechanical and biochemical disturbances affecting soil formation in temperate forests, resulting in a complex spatial pattern of disturbance regimes and a close relationship between disturbance histories and soil units. In 巓f韓sk Prales (Czech Republic) - the fourth oldest, continuously protected reserve in Europe and the first site of global research network SIGEO (Smithsonian Institution Global Earth Observatories) in continental Europe - we compared extensive dendrochronological, soil and pit-mound microtopography data both temporally and spatially from an area of anthropogenically unaffected 42 ha collected from 2008-2012. These data sets differ in terms of information complexity and length of memory: tree cores contain complex information about the disturbance history of the past 350 years, footprints of disturbances from the uprooting of a specific tree can persist 1700 years, and soils represent an extensive composite phenotype that has been developing for at least the entire postglacial period (10 500 years). On average, 6.18-13.41% of the canopy on individual soil units was disturbed per decade. Even though the "backbone" of key events in the development of the forest ecosystem remained the same (e.g. the 1870s, 1880s and 1980s), the internal structure of disturbance history often differed among soil units; the most exceptional were Gleysols and Histosols, where important feedback from soil to trees was expected. However, the characteristics of treethrow dynamics as well as the frequencies of stronger releases in core series also significantly differed along a gradient of terrestrial soil weathering and leaching (Haplic Cambisols - Dystric Cambisols - Entic Podzols - Albic Podzols). These results suggest the existence of several disturbance regimes within the forest, controlling fine-scale pedodiversity.

奱monil, P.; Va氻?kov, I.; Dan?k, P.; Jan韐, D.; Adam, D.



Seasonal variability of soil aggregate stability  

NASA Astrophysics Data System (ADS)

Seasonal variability of soil properties measured in surface horizons of three soil types (Haplic Luvisol, Greyic Phaeozem, Haplic Cambisol) was studied in years 2007 and 2008. Undisturbed and disturbed soil samples were taken every month to evaluate field water content, bulk density, porosity, ration of gravitational and capillary pores, pHKCl and pHH2O, organic matter content and its quality, aggregate stability using WSA index. In addition, micromorphological features of soil aggregates were studied in thin soil sections that were made from undisturbed large soil aggregates. Results showed that soil aggregate stability depended on stage of the root zone development, soil management and climatic conditions. Larger aggregate stabilities and also larger ranges of measure values were obtained in the year 2007 then those measured in 2008. This was probably caused by lower precipitations and consequently lower soil water contents observed in 2007 than those measured in 2008. The highest aggregate stability was measured at the end of April in the years 2007 and 2008 in Haplic Luvisol and Greyic Phaeozem, and at the end of June in the year 2007 and at the beginning of June in 2008 in Haplic Cambisol. In all cases aggregate stability increased during the root growth and then gradually decreased due to summer rainfall events. Aggregate stability reflected aggregate structure and soil pore system development, which was documented on micromorphological images and evaluated using the ration of gravitational and capillary pores measured on the undisturbed sol samples. Acknowledgement: Authors acknowledge the financial support of the Grant Agency of the Czech Republic grant No. 526/08/0434, and the Ministry of Education, Youth and Sports grant No. MSM 6046070901.

Rohoskova, M.; Kodesova, R.; Jirku, V.; Zigova, A.; Kozak, J.



Influence of polluted air on chemical composition of elements from forest ecosystems from the region of Srednogorie (Bulgaria)  

NASA Astrophysics Data System (ADS)

Studied region is situated on the south steep slopes of Central Balkan Mountains with south-west and south-east aspects. In the lower parts sediments parent materials are presented sandstones, shales, limestones and conglomerates. Over 800 m the southern Bulgarian granites, gneiss and crystalline shale are distributed and the formed soils could be referred as Eutric-Dystric Cambisols. In the middle forest zone of the area the pure and mixed beech forest (Fagus sylvatica L.) are distributed. The most distributed soil types in studied region are Dystric Cambisols. Soil acidity slightly varies pH is between 4.7 and 5.0 while more acid are the superficial 0-5 cm of soils. The mean values of organic carbon content are higher for the upper soil layer (61.7 g/kg). The heavy metals contents (Cu, Pb and Zn) in the superficial layers are little higher compared with the determined limit values for soils. The content of Zn increased toward deeper layers of soil profile, while the content of Cu decreased slowly. For the Pb small variation in the profile distribution are observed. Concerning the heavy metals content in forest floor layers higher values are determined for Cu and Pb in Aof and Aoh, 540 mg/kg and 903 mg/kg for Cu and 100 mg/kg and 168 mg/kg for Pb respectively. These high values of Cu are indicator for anthropogenic influence in the region, provoked by the activities of copper production enterprise CPE Georgi Damyanov in town of Srednogorie. The high values for heavy metals content in forest floor, the significant soil organic matter content and lower pH values supposed a higher anthropogenic impact on brown forest soils in studied region.

Sokolovska, Maria; Zhiyanski, Miglena; Slavtcheva, Evguenia; Roca, N鷕ia; Bech, Jaume



J. Field Ornithol. 82(2):140149, 2011 DOI: 10.1111/j.1557-9263.2011.00316.x Nest-site selection and productivity of Vesper Sparrows  

E-print Network

selection and productivity of ground-nesting Vesper Sparrows (Pooecetes gramineus) across sites productividad en Pooecetes gramineus anidando en h麓abitats de pastoreo El pastoreo de ganado en pastos de estepa lugares de anidaci麓on y productividad de Pooecetes gramineus que anida en el suelo a trav麓es de lugares



E-print Network

azul贸n Anas platyrhynchos, y se detectaron intoxicaciones letales en 谩nsar com煤n y 谩nade rabudo Anas acuta (Mateo et al., #12;6 1998). Tambi茅n se estudi贸 la densidad de plomo en los suelos de las zonas

Figuerola, Jordi


Uso de modelos de simulaci髇 como soporte para la decisi髇 de fertilizaci髇  

Microsoft Academic Search

La demanda de nutrientes es regulada por los factores definitorios del crecimiento (radiaci髇, temperatura, genotipo, fecha de siembra, etc.) y por factores limitantes del rendimiento como la disponibilidad de agua (lluvia efectiva, agua acumulada a la siembra, retenci髇 de agua del suelo, sistema radical del cultivo, etc.). En general, aumentar el suministro de nutrientes aumenta el rendimiento hasta que 閟te

Jorge L. Mercau


BIOTROPICA 33(3): 421434 2001 Drought and Irrigation Effects on Fine Root Dynamics in a Tropical  

E-print Network

麓s profundas del suelo para acceder a fuentes de agua subterra麓nea y/o a nutri- mentos. Para examinar estas麓 sus valores ma麓ximos inmediatamente despue麓s del inicio de las lluvias; por el contrario, las ma

Bermingham, Eldredge


PercePci髇 del ecosistema Por la comunidad de san crisanto en Yucat醤 de acuerdo con su actividad  

Microsoft Academic Search

unam Resumen: El prop髎ito del presente estudio es saber c髆o percibe su ecosistema referente al suelo, agua y vegetaci髇, la comunidad rural costera de San Crisanto en Yucat醤. Se encuest a un total de 82 indi- viduos por edad, sexo y actividad (ama de casa, estudiante, jornalero, pescador, agricultor, comerciante y otras). Los resultados indican que las personas sin remuneraci髇

Gloria Ch醰ez Ballado




Microsoft Academic Search

Recibido para revisar 27 de Julio de 2006, Aceptado 14 de Noviembre de 2006, Version final 24 de Enero de 2007 RESUMEN: El presente art韈ulo muestra experimentos realizados utilizando modelos a escala para estudiar el proceso de infiltraci髇 en terraplenes sometidos a aguas lluvias. Varios modelos a escala fueron construidos usando un suelo arenoso con alto contenido de finos; para




Deslizamientos, flujos de escombrera y desastres geolgicos similares provenientes de volcanes  

E-print Network

fango, flujos de fango o avalanchas de escombrera) generalmente ocurren durante lluvias intensas en suelos ya saturados con agua. Usualmente los flujos de escombrera comienzan como peque帽贸s deslizamientos desliza- mientos durante lluvias intensas. Usualmente la intensidad de las lluvas ncesarias para que se

Torgersen, Christian


Diseo de un Programa de  

E-print Network

conservacion de suelos y del agua (3) la "sustentabilidad" #12;Que significa "sustentabilidad"? La capacidad de* 路 Resultados inmediatos Simulador de Lluvia Simulador de Viento Calibracion de los Indicadores #12;Dos tipos de productividad Erodibilidad Disponabilidad del agua y de los nutrientes Integridad biotica = "monitoreo de


SCIENCE DU SOL Balance hidrico de un olivar con riego gota a  

E-print Network

, medidas de1 contenido de agua y de presi贸n del agua en e1 suelo y dosis de riego diarias. En e1 trabajo se zonas afectadas y no afectadas por 1os aportes localizados de agua durante e1 periodo de riego. Asimismo de 7 x 7 m. Durante el periodo experimental, se observan diferencias entre las cantidades de agua

Boyer, Edmond



Microsoft Academic Search

RESUMEN. El flujo de agua y solutos en la zona no saturada est fuertemente influido por la macroporosidad del suelo, la cual puede ser evaluada y cuantificada a partir de t閏nicas micromorfol骻icas y el an醠isis de im醙enes. Se determin la superficie ocupada por distintas formas y tama駉s de poros mayores a los 50 祄 de tres Argiudoles de Argentina, diferenciados

M. G. Castiglioni; H. J. M. Morr醩


On-Site Wastewater Treatment Systems: Septic Tank/Soil Absorption Field (Spanish)  

E-print Network

velocidad de la carga hidr?ulica es m?s baja en arcilla que en limo, y m?s baja en limo que en arena. Como los suelos arcillosos tienen una conductividad muy baja, s?lo los campos de drenaje no est?ndar se pueden usar en arcilla. Tama?o del campo de absorci...

Lesikar, Bruce J.; Enciso, Juan




Microsoft Academic Search

RESUMEN: Desde el punto de vista hidrol骻ico el cambio de uso de suelo se ve reflejado en la respuesta que una cuenca hidrogr醘ica presenta ante eventos extremos de precipitaci髇. En el presente trabajo se pretende analizar la variaci髇 de la repuesta hidrol骻ica de una cuenca al aumento de uso urbano en ella, combinando t閏nicas de fotointerpretaci髇, Sistemas de Informaci髇 Geogr醘ica

Fernando O馻te


Drinking Water Problems: Copper (Spanish)  

E-print Network

mundo, Problemas del agua potable: El cobre Monty C. Dozier, Profesor Asistente y Especialista de Extensi?n en Recursos del Agua, Mark McFarland, Profesor y Especialista de Extensi?n en Fertilidad de Suelos, Bruce J. Lesikar, Profesor e Ingeniero Agr...

Dozier, Monty; McFarland, Mark L.; Lesikar, Bruce J.



Documento vinculado a -AVES y Atlas Virtual de Aves Terrestres de Espaa BIOGEOGRAFA ECOLGICA DE LA AVIFAUNA TERRESTRE ESPAOLA  

E-print Network

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 19.51 Formaciones arbustivas IIIIIIIIIIIIIIIIIIIIII 5.66 Form. arboladas abiertas IIIIIII 1 distribuci贸n a gran escala en la Pen铆nsula Ib茅rica. Tiene marcadas preferencias por zonas monta帽osas, con menor gradientes clim谩ticos y de uso de suelo zonas llanas

Carrascal, Luis M.


El t y la prevenci髇 del c醤cer: Solidez y l韒ites de la evidencia cient韋ica

Hoja informativa que resume los resultados de estudios realizados sobre el t y la prevenci髇 del c醤cer. Incluye informaci髇 sobre los ingredientes del t y las consideraciones de seguridad sobre el consumo de esta bebida.


Analysis of the maximum discharge of karst springs  

NASA Astrophysics Data System (ADS)

Analyses are presented of the conditions that limit the discharge of some karst springs. The large number of springs studied show that, under conditions of extremely intense precipitation, a maximum value exists for the discharge of the main springs in a catchment, independent of catchment size and the amount of precipitation. Outflow modelling of karst-spring discharge is not easily generalized and schematized due to numerous specific characteristics of karst-flow systems. A detailed examination of the published data on four karst springs identified the possible reasons for the limitation on the maximum flow rate: (1) limited size of the karst conduit; (2) pressure flow; (3) intercatchment overflow; (4) overflow from the main spring-flow system to intermittent springs within the same catchment; (5) water storage in the zone above the karst aquifer or epikarstic zone of the catchment; and (6) factors such as climate, soil and vegetation cover, and altitude and geology of the catchment area. The phenomenon of limited maximum-discharge capacity of karst springs is not included in rainfall-runoff process modelling, which is probably one of the main reasons for the present poor quality of karst hydrological modelling. R閟um. Les conditions qui limitent le d閎it de certaines sources karstiques sont pr閟ent閑s. Un grand nombre de sources 閠udi閑s montrent que, sous certaines conditions de pr閏ipitations extr阭ement intenses, il existe une valeur maximale pour le d閎it des sources principales d'un bassin, ind閜endante des dimensions de ce bassin et de la hauteur de pr閏ipitation. La mod閘isation des d閎its d'exhaure d'une source karstique n'est pas facilement g閚閞alisable, ni sch閙atisable, cause des nombreuses caract閞istiques sp閏ifiques des 閏oulements souterrains karstiques. Un examen d閠aill des donn閑s publi閑s concernant quatre sources karstiques permet d'identifier les raisons possibles de la limitation de l'閏oulement maximal: (1) la dimension limit閑 du conduit karstique, (2) l'閏oulement en charge, (3) le d閎ordement dans un autre bassin, (4) le d閎ordement du r閟eau s'閏oulant vers la source principale par des sources temporaires dans le m阭e bassin, (5) le stockage d'eau dans la zone surmontant l'aquif鑢e karstique ou la zone 閜ikarstique du bassin, et (6) des facteurs tels que le climat, le sol et le couvert v間閠al, l'altitude et la g閛logie du bassin d'alimentation. Le ph閚om鑞e de capacit limit閑 du d閎it maximal des sources karstiques n'est pas pris en compte dans la mod閘isation des processus de pr閏ipitation-ruissellement, ce qui est probablement une des principales raisons de l'actuelle m閐iocre qualit de la mod閘isation hydrologique du karst. Resumen. Se presenta un an醠isis de las condiciones que limitan la descarga de algunos manantiales k醨sticos. Un elevado n鷐ero de los manantiales estudiados muestra que, bajo condiciones de precipitaci髇 extremadamente intensa, hay un valor m醲imo para la descarga de los manantiales principales de la cuenca, independientemente del tama駉 de 閟ta y del volumen de precipitaci髇. La modelaci髇 de la descarga de manantiales k醨sticos no es f醕il de generalizar y esquematizar debido a la existencia de numerosas caracter韘ticas que son inherentes a los sistemas k醨sticos de flujo. A partir del estudio detallado de los datos publicados sobre cuatro manantiales k醨sticos, se identific las posibles causas de la existencia de un caudal m醲imo de descarga: (1) el tama駉 limitado del conducto k醨stico, (2) el caudal surgente, (3) la descarga a otras cuencas, (4) el desbordamiento del sistema de flujo principal hacia manantiales intermitentes dentro de la misma cuenca, (5) el almacenamiento de agua en la zona superior del acu韋ero k醨stico o zona epik醨stica de la cuenca, y (6) factores tales como el clima, suelo y cubierta vegetal, y la altitud y geolog韆 de la zona de captaci髇. La limitaci髇 de la descarga m醲ima de los manantiales k醨sticos no ha sido incluida en la modelaci髇 del proceso lluvi

Bonacci, Ognjen



Biochar application to temperate soils - effects on soil fertility and crop yield  

NASA Astrophysics Data System (ADS)

Biochar (BC) application to soil as a potential soil amendment is currently intensively explored. Depending on feedstock and highest treatment temperature (HTT), BC application to soil may contribute to the soil nutrient status by directly adding nutrients to the soil as well as by increasing pH, cation exchange and water holding capacity. These parameters are known to play an important role in the soil nutrient status and nutrient availability. A positive effect on plant growth after BC application to tropical soils has been observed repeatedly; however, the effect of BC application to soils in temperate climate regions is much less explored. We investigated the effect of BC to temperate soils and crop yield using a randomized pot experiment in a greenhouse with three agricultural soils (Planosol, Cambisol, Chernozem) and four BC types (from straw, mixed woodchips and vineyard pruning, all pyrolyzed at 525癈). In order to analyze the effect of pyrolysis temperature, we additionally applied vineyard pruning BC pyrolyzed at 400癈. Selected treatments were planted with mustard (Sinapis alba L.), followed by barley (Hordeum vulgare). Soil sampling was carried out after barley harvest. Investigated soil parameters included pH, electrical conductivity (EC), C/N ratio, cation exchange capacity (CEC), CAL-extractable P and K, EDTA extractable Cu, Fe, Mn, Zn as well as nitrogen supplying potential (NSP). Biomass production of the two crops was determined as well as its elemental composition. Biochar application (3% wood-based BC) caused a considerable pH increase for the acidic Planosol. The effect of BC application on CEC was dependent on the original status of the soil, notably soil pH and texture. 3 % BC application (wood) decreased CEC by 3.5 % and 10 % for the Chernozem and Cambisol, respectively, but increased CEC by 35 % for the acidic, sandy Planosol, which may be due to the strong liming effect found for the Planosol. BC application significantly raised CAL-extractable K for all soils. CAL-extractable P only increased in the Planosol and Cambisol at 3% application rate. Mustard yield decreased by 67% for vineyard pruning BC if nitrogen deficiency was not compensated for, straw-derived BC only caused a 2 % decrease of mustard yield. Barley yield was still significantly lower in most BC-treated pots compared to the controls, however, plant yields were less reduced for the second crop. Only straw-derived BC treatments showed a significantly higher barley yield (1955 40 g m-2) compared to the control (1837 70 g m-2). The results of the elemental composition of the barley grains showed that Al uptake in the Planosol significantly decreased after application of wood and straw BC, which may be due to the pH increase after BC application. In addition, Ca uptake in barley grains was significantly higher in the 3% wood BC treatment compared to the control. This may be caused by a higher Ca content of the wood BC as revealed by XRF. Mn uptake, on the other hand, was significantly reduced after BC application.

Kloss, S.; Zehetner, F.; Feichtmair, S.; Wimmer, B.; Zechmeister-Boltenstern, S.; Kitzler, B.; Watzinger, A.; Soja, G.



Uncertainties and Solutions Related to Use of WRB (2007) in the Boreo-nemoral zone, Case of Latvia  

NASA Astrophysics Data System (ADS)

Relatively high diversity of soils groups according to the WRB (2007) classification is observed in forest ecosystems in the boreo-nemoral zone in Latvia. This is due to the geological genesis of area and environmental conditions (Kasparinskis, Nikodemus, 2012), as well as historical land use and management (Nikodemus et al., 2013). Due to the relatively young soils, Albic, Spodic and Cambic horizons are relatively weakly expressed in many cases. Relatively well developed Albic horizons occur in sandy forest soils, but unusually well expressed Spodic features are observed. In some cases there is a Cambic horizon, however location of Cambisols in the WRB (2007) soil classification sequence does not provide an opportunity to classify these soils as Cambisols, but they are classified as Arenosols. This sequence does not reflect the logical sheme of soil development, and therefore raises the question about location of Podzols, Arenosols and Cambisols in the sequence of WRB (2007) soil classification. Soils with two parent materials (abrupt textural change) are relatively common in Latvia, where conceptually on the small scale mapping results in classification as the soil group Planosols, but in many cases there is occurrence of Fluvic materials, as parent material in the upper part of the soil profile is formed by Baltic Ice lake sandy sediments - this leads to question about the location of Fluvisols and Planosols in the sequence of the WRB (2007) soil classification. Soil research has found cases, where a relatively well developed Spodic horizon was established as the result of ground water table depth in areas of abrupt textural change. In this case the profile corresponds to the soil group of Podzols, however in some cases - Gleysols not Planosols due to a high ground water table. Therefore there is a need for discussion also about the location of Podzols and Planosols in the sequence of the WRB (2007) soil classification. The above mentioned questions raise problems related to unambiguous determination of soil groups. Soil classification must be very precise by reflecting relationships of soil forming processes. In the development of international soil classification it is advisable to pay more attention on ecological processes. This study was supported by the European Social Fund No. 2013/0020/1DP/ References: IUSS Working Group, 2007. World Reference Base for Soil Resources 2006, first update 2007. World Soil Resources Reports 103. FAO, Rome. 103-116. Kasparinskis R., Nikodemus O. 2012. Influence of environmental factors on the spatial distribution and diversity of forest soil in Latvia. Estonian Journal of Earth Sciences. 61(1): 48-64. Nikodemus O., Kasparinskis R., Kukuls I. 2013. Influence of Afforestation on Soil Genesis, Morphology and Properties in Glacial Till Deposits. Archives of Agronomy and Soil Science. 59(3): 449-465.

Kasparinskis, Raimonds; Nikodemus, Olgerts; Rolavs, Nauris



Stable isotope signatures in bulk samples from two soils with contrasting characteristics. What do they tell about ongoing pedogenic processes?  

NASA Astrophysics Data System (ADS)

Isotopic ratio mass spectrometry (IRMS) has been proven as a promising tool for the monitoring of biogeochemical processes in soil. In this work, stable isotope signatures of light elements ?15N, ?13C, ?18O and ?D were determined for two soils with contrasting characteristics in terms of climate, vegetation, land use and management. The studied soils were a Cambisol from a subtropical area (Paran region, South Brazil) and an Arenosol from a Mediterranean climate (Andalusia, South Spain). A Flash 2000 HT (N, C, S, H and O) elemental analyzer (Thermo Scientific) coupled to a Delta V Advantage IRMS (Thermo Scientific) was used. Isotopic ratios are reported as parts per thousand (o ) deviations from appropriate standards recognized by the international atomic energy agency (IAEA). In a first approach we took advantage of the well-known different ?13C signature between plants using either the C4 or C3 carbon fixation pathway (O'Leary, 1981). The Arenosol (Spain) revealed a ?13C signature which is clearly in the range of C3 plants (-26 to -30 o ). Different plant canopies (tree, shrubs or ferns) caused only slight variations ?13C (STD= 0.98). In contrast, the Cambisol (Brazil) showed less depletion of the heavier carbon isotope corresponding to C4 predominant vegetation. In addition an increase from -19 o in the soil surface (0 - 5 cm) to -16 o in the subsoil (20 - 30 cm) was observed in line with a recent (2 years old) shift of the land use from the predominant C4 grassland to eucalypt (C3) cultivation. Crossplots of ?15N vs. ?18O may provide information about nitrate (NO3-) sources and N cycling (Kendall, 1998). In the Mediterranean Arenosol this signal (?18O = 30o ?15N = 2o ) was found compatible with a predominant nitrate atmospheric deposition, whereas the signal in the Brazilian Cambisol pointed to the use of a mineral N fertilization with signs of denitrification processes (?18O = 13o ?15N = 9o ). No conclusive results could be obtained from the ?D isotopic signature probably due to overlapping of the ?D signals from the organic and the mineral fractions. For a more detailed analysis steps allowing their separation are necessary (Ruppenthal et al. (2013) and references therein). Kendall, C. 1998. Tracing nitrogen sources and cycling in catchments. In Isotopes Tracers in Catchments Hydrology (C. Kendall and J. J. McDonnell, Eds). Elsevier Science B. V., Amsterdam, 519-576. O'Leary, M.H. 1981. Carbon isotope fraction in plants. Phytochemistry 20: 553-567. Ruppenthal, M., Oelmann, Y., Wilcke, W. 2013. Optimized demineralization technique for the measurement of stable isotope ratios of nonexchangeable H in soil organic matter. Environmental Science and Technology 47: 949-957.

Jim閚ez-Morillo, Nicasio T.; dos Anjos Leal, Ot醰io; Knicker, Heike; Pinheiro Dick, Deborah; Gonz醠ez-Vila, Francisco J.; Gonz醠ez-P閞ez, Jos A.



The Effect of Kleptoparasitic Bald Eagles and Gyrfalcons on the Kill Rate of Peregrine Falcons Hunting Dunlins Wintering in British Columbia (Efecto del Cleptoparasitismo de  

E-print Network

Falco rusticolus sobre la Tasa de Muerte por Cacer铆a por Falco peregrinus sobre individuos de Calidris Haliaeetus leucocephalus y Falco rusticolus sobre la Tasa de Muerte por Cacer铆a por Falco peregrinus sobre reported to pirate ducks captured by Peregrine Falcons (Falco peregrinus), but ours is the first study



Microsoft Academic Search

Germinative and establishment of fresh Cecropia schreberiana, Trichospermum mexicanum and Hibiscus elatus seeds were tested under controlled stress conditions (heat, water, light and physical barrier) and exposed to pregerminative of hydration- dehydration and heat shock treatments. In the three species the biggest percentages of final germination under heat, water and illumination stress were obtained with the application of partial hydration

Jorge A. S醤chez; B醨bara Mu駉z; Laura Montejo; Carretera de Varona



An醠isis sobre las Unidades de Manejo (UMAs) de ciervo rojo (Cervus elaphus Linnaeus, 1758) y wapiti (Cervus canadensis (Erxleben, 1777) en M閤ico: problem醫ica para la conservaci髇 de los ungulados nativos  

Microsoft Academic Search

Red deer, elk or wapiti are the largest cervid in Mexico and they are considered exotic species. The native subspecies in Mexico was Cervus canadensis merriami (Nelson, 1902), that was extirpated at the beginning of last century, and now it is considered extinct. Now, elk (Cervus canadensis (Erxleben, 1777) and European red deer (C. elaphus Linnaeus, 1758) have been introduced

Sonia Gallina; Luis Arturo Escobedo-Morales


Western Hemisphere Conference on Persons with Disabilities. Conference Proceedings (Washington, D.C., March 14-18, 1993) = Conferencia Hemisferica Occidental sobre Personas con Discapacidades. Actas de la Conferencia. (Washington, D.C., 14 al 18 de Marzo de 1993).  

ERIC Educational Resources Information Center

This document presents the proceedings of a conference which brought together delegates and First Ladies representing western hemisphere nations to address needs and issues affecting people with disabilities in the Americas. It presents the texts of two keynote addresses: "Small Triumphs, Big Victories: A Global View of Persons with Disabilities,"

Kelley, Jerry D., Ed.; And Others


Grupo de Trabajo Para la Preparacion del Proyecto Sobre el Desarrolo de Servicias de Bibliotecas y de Informacion Cientifica y Tecnica (Working Group for the Preparation of the Proposal on the Development of Library Services and Scientific and Technical Information).  

ERIC Educational Resources Information Center

The Office of Iberoamerican Education, an intergovernmental body based on educational and cultural cooperation for the purpose of disseminating information, documentation, advice, and assistance in the field of education, co-sponsors (with UNESCO) the work represented in this study of library and information planning and facilities in the Andean

Oficina de Educacion Iberoamericana, Madrid (Spain).


Mision Informacion: Entrevista a Empleados en el Lugar donde Trabajan; Observar a Obreros mientras Trabajan; Programa sobre Experiencia Laboral (Mission Information: Worksite Interview, Shadow Community Workers, Work Experience Program). CHOICE (Challenging Options in Career Education).  

ERIC Educational Resources Information Center

The work-study guide is the third volume in the advanced level of a career education curriculum for elementary-secondary migrant children. Complementing the secondary level job information text and a workbook about decision making and self-awareness, the work-study guide is designed to accompany work exploration and experience programs. It

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


Resumen. La fosa de Cariaco, ubicada al sur del Caribe en el margen continental de Venezuela, ha sido el foco de muchos estudios de relevancia global sobre la qumica de las aguas marinas y la  

E-print Network

Resumen. La fosa de Cariaco, ubicada al sur del Caribe en el margen continental de Venezuela, ha ("2004"), 161-162: 215-234 #12;216 Caracter铆sticas de la fosa de Cariaco, Venezuela Cariaco basin on the continental margin of Venezuela, has been the focus of many marine chemistry and paleoclimatology studies

Meyers, Steven D.


EFECTO DEL CLORHIDRATO DE ZILPATEROL Y LA VITAMINA D3 SOBRE LA CALIDAD DE LA CARNE EN NOVILLAS COMERCIALES Effects of Zilpaterol Hydrochloride and Vitamin D3 on Beef Quality in Commercial Heifers  

Microsoft Academic Search

Twenty Longissimus dorsi muscles were collected from car- casses of crossbred heifers in feedlot to evaluate the effects of zilpaterol hydrochloride (Zilmax, Intervet) (Z), 6 millions IU\\/d of dietary vitamin D 3 (D) in the diet, and their combination on shear force values (raw and cooking) and sensorial evaluation. Samples were taken from carcasses of heifers that previously received one

Oneida E. Mor髇-Fuenmayor; Libertad Zamorano-Garc韆; Francisco Ysunza; Natalia F. Gonz醠ez-M閚dez; A. C. Hermosillo



A玢o da melatonina sobre os receptores ester骾des sexuais no ov醨io, oviduto e 鷗ero e o estresse oxidativo nos ov醨ios de ratas adultas UChB (consumidoras volunt醨ias de etanol a 10%) durante a ovula玢o.  

E-print Network

??Chronic ethanol intake is associated with female reproductive disturbances including hormonal dysfunction, changes in the steroid receptors expression, production of reactive oxygen species (ROS), among (more)

Luiz Gustavo de Almeida Chuffa



Kathy Talks with Other Mothers about Breastfeeding an Older Baby. Mother-to-Mother Support = Josefa Habla con Otras Mamas sobre el Amamantar a un Bebe Mayorcito. Apoyo Madre a Madre.  

ERIC Educational Resources Information Center

These magazine-sized booklets, one in English, one in Spanish, are in cartoon format and designed to be used by people with limited literacy in English or Spanish. The book explains that a 1- or 2-year old breastfed baby is comforted by breastfeeding, breast milk continues to have nutritional value (even if the mother becomes pregnant), and that

Magalhaes, Rebecca; Stone-Jimerez, Maryanne; Allen de Smith, Paulina; Smith, Natalia


Memorias Conferencia Internacional IEEE Mexico 1971, Sobre Sistemas, Redes Y Computadoras. Volumen I and Volumen II. (Proceedings of International Conference of IEEE Concerning Systems, Networks, and Computers. Volume I and Volume II.  

ERIC Educational Resources Information Center

The following papers in English from this international conference may be of particular interest to those in the field of education. T. Nakahara, A. Tsukamota, and M. Matsumoto describe a computer-aided design technique for an economical urban cable television system. W. D. Wasson and R. K. Chitkara outline a recognition scheme based on analysis

Concheiro, A. Alonso, Ed.; And Others


Algunas consideraciones sobre la contaminaci髇 ambiental en la obtenci髇 y uso de fundentes para la soldadura autom醫ica por arco sumergido Some considerations about the environmental contamination in the fluxes obtaining and use in the submerged arc welding  

Microsoft Academic Search

In the paper a some considerations about the environmental contamination during the obtaining process and use welding fluxes for submerged arc welding process are given. Is appreciated that the processes GMAW, SMAW and FCAW are those more studied regarding the indicative of environmental contamination, but solely related with the affections on the operatives and welders. However, the productive processes of

Facultad de Ingenier韆 Mec醤ica; Eriel P閞ez Zapico; Carlos R. G髆ez P閞ez; Rafael Quintana Puchol; Lorenzo Perdomo Gonz醠ez


EFEITO DE M蒚 ODOS DE COC敲O SOBRE A COMPOSI敲O QU蚆ICA E COLESTEROL EM PEIT O E COXA DE FRANGOS DE COR TE Effect of cooking methods on carcass chemical composition and cholesterol of poultry breast and thight meat  

Microsoft Academic Search

In this work, the aim was to compare the effects of the cooking methods: boiling (BO), pan frying (PF), broiling (BR), conventional oven (CO), microwave oven (MO) on cooking loss (CL), proximate composition (CC), apparent retention rate of fat, true retention rate of fat and cholesterol level of chicken s breast and thigh meat. In the statistical analyses was used

Fabiana Cordeiro Rosa; Maria Cristina Bressan; Antonio Gilberto Bertechini; 蒬ison Jos Fassani; Josye Oliveira; Peter Bitencourt Faria; Taciana Villela Savian



Microsoft Academic Search

RESUMO: considerando que a vis鉶 um dos sistemas sensoriais mais importantes na locomo玢o pois fornece informa玢o tanto do ambiente quanto da postura e dos movimentos corporais, este estudo analisou os efeitos de um programa de treinamento perceptivo-motor no controle das atividades de locomo玢o em seis crian鏰s com defici阯cias da vis鉶. Para tanto, realizou-se a avalia玢o da locomo玢o durante a

Luiz Cezar; Janine Eliza de Oliveira; Silva PASSOS; Luiz Gon鏰lves


Cambio estructural regional y agua: Escasez, dependencia e impactos sobre el tejido econ髆ico. El caso de Andaluc韆\\/Structural Change and Water: Scarcity, Dependence and Impacts on the Economy. The Case of Andalusia  

Microsoft Academic Search

El agua es un input clave para la producci髇 de numerosos bienes, y su escasez puede ser un factor limitante para el desarrollo regional. La gesti髇 de este recurso en Espa馻 ha estado caracterizada por medidas de oferta que han descuidado la conservaci髇 de los recursos h韉ricos as como la gesti髇 de la demanda..El art韈ulo utiliza la metodolog韆 HEM (Hypothetical




S韓tomas depresivos relacionados con la alteraci髇 de los ritmos circadianos. Concordancia entre la percepci髇 de m閐icos y pacientes sobre prevalencia, impacto cl韓ico y su respuesta a los f醨macos antidepresivos actuales  

Microsoft Academic Search

This is a descriptive, transversal and multicenter study using self-administered surveys concurrently to collect the opinions of two groups (psychiatrists and patients) and discuss their disagreements.The scope of study are hospital services, outpatient centers, individual professional consultation and other assistance system, public or private, which provides psychiatric care in Spain. Participated in this study 319 psychiatrists and 957 patients with

Luis San Molina; Jos Manuel Montes-Rodr韌uez; Fernando Caballero-Mart韓ez; Fernando 羖varez Lozano; Marta Garc韆 Manrique



Effect of low cost shell coatings and storage conditions on the raw and cooked qualities of shell egg Efecto de recubrimientos de cascara de bajo coste y de las condiciones de almacenaje sobre la calidad de huevos crudos y cocinados  

Microsoft Academic Search

The effect of shell coating materials (odorless petroleum jelly and paraffin wax) and storage conditions (ambient and refrigerated) on the internal quality such as the Haugh unit, yolk index, albumen pH, albumen soluble solids, and sensory qualities of boiled eggs (ease of peeling, surface smoothness and odor of hard-boiled and peeled eggs) were evaluated over 9 weeks of storage. Generally,

T. A. Shittu; O. Ogunjinmi



Por ms de 30 aos, el programa de CU Wizards ha presentado shows mensuales GRATIS que entretienen e informan a los nios sobre las maravillas de la ciencia. Estos shows interactivos se  

E-print Network

Physics o Cristol Chemistry. Hay PARQUEADERO GRATIS en los LOTES 308 y 436. Tambi茅n hay parqueadero disponible por un precio fijo de $4.00 en el parqueadero de la calle Euclid. Por favor visite nuestro sitio

Lineberger, W. Carl


La Ctedra Prosegur-UA tiene por objeto ser un espacio de debate, reflexin e investigacin sobre el estudio de la gestin del talento en las organizaciones. Se ocupar de desarrollar programas formativos y tareas de  

E-print Network

de recursos humanos y gesti贸n de redes sociales en la empresa. Investigaci贸n para el dise帽o e comunicaci贸n y en especial en redes sociales. DIRECCI?N POSTAL Universidad de Alicante Carretera de San Vicente imagen y reputaci贸n social de ambas marcas. La raz贸n de ser de la C谩tedra Prosegur-UA est谩 explicitada

Escolano, Francisco


Aspectos de biolog韆 y tablas de vida de Cephalonomia stephanoderis y Prorops nasuta (Himenoptera: Bethilidae) sobre su hospedero la broca del caf criada en la dieta artificial Cenibroca modificada.  

Technology Transfer Automated Retrieval System (TEKTRAN)

Biological aspects and demographic parameters of the African bethylid wasps Cephalonamia stephanoderis Betrem and Prorops nasuta Waterson (Hymenopterans: Bethylidae) were investigated using diet-reared hosts of Hypothenemus hampei Ferrari (Coleoptera: Scolytidae). The life cycle (28.40 SE 0.486 a...


Como Promover el Exito de las Ninas y las Minorias en las Ciencias y en las Matematicas. Para Padres/sobre Padres (How To Promote the Science and Mathematics Achievement of Females and Minorities. For Parents/about Parents).  

ERIC Educational Resources Information Center

Some minority and female students traditionally have not been given the help they need to enroll and succeed in mathematics and science classes. Now, however, various approaches are available to give these students the extra attention they need. Parents can help children develop an interest in science and mathematics by: (1) identifying role

Schwartz, Wendy


Em busca do Humanismo: um olhar sobre a visita t閏nica nos cursos de turismo a partir da teoria cr韙ica em curr韈ulo In search of Humanism: a look into technical visits in toursim courses based on the curriculum critical theory  

Microsoft Academic Search

The present article aims at analyzing a learning strategy found in Tourism courses: the technical visit. It highlights the importance of finding a humanistic approach for this learning strategy developed from aspects of the Curriculum Critical Theory. This work presents current characteristics of the Tourism course and considerations on the technical visit as a learning strategy. Finally, this work presents

Thiago Rodrigues SCHULZE


DESARROLLO DE LA T蒀NICA DE PULSO GALVANOST罷ICO PARA MEDICI覰 DE CORROSI覰 SOBRE LA INTERFASE CONCRETO-ACERO. Development of the Technique of Pulse Galvanostatic for Measurement of Corrosion on Interphase Steel - concrete  

Microsoft Academic Search

RESUMEN Se presenta el dise駉 de un prototipo de sistema potenciost醫ico utilizando instrumentaci髇 virtual, que implementa la t閏nica de pulso galvanost醫ico. La t閏nica consiste en la impresi髇 de un pulso de corriente el閏trica del orden de los microamperios cuya duraci髇 es de 10 segundos, mostrando la respuesta en voltaje experimentada por la interfase, con lo que se obtiene informaci髇 cuantitativa




Microsoft Academic Search

Purpose: To obtain information throughout Spain on the current management of vitreo-retinal surgi- cal diseases, the number of ophthalmologists invol- ved in retinal surgical diseases care, and the urgent management of retinal detachments. Methods: A 30 item questionnaire was sent by mail, on two separate occasions, to the heads of Ophthal- mology Departments of 276 centers in Spain. Results: A



Efecto del almacenamiento en atm髎feras bajas en ox韌eno sobre la calidad e incidencia de escaldado superficial en manzanas Topred \\/ Effect of low-oxygen atmospheres on quality and superficial scald of Topred apples  

Microsoft Academic Search

In a 2-year study, Topred (TR) apples harvested from the area of Lleida (NE Spain) were treated with 3 rates (0, 1000 and 2000 ppm) of diphenylamine (DPA) and held in 3 different experimental storage conditions: standard controlled atmosphere (CA) with 3% O2 and 3% CO2; low oxygen (LO) atmosphere with 2% O2 and 2% CO2; ultra-low oxygen (ULO) atmosphere

J. Graell; C. Larrigaudiere; M. Vendrell



Temperatura ambiental en la crianza del pollo de engorda sobre los par醡etros productivos y la mortalidad por el s韓drome asc韙ico Ambient temperature effect on productive parameters and ascites syndrome mortality in broilers  

Microsoft Academic Search

A test was carried out to assess different exposure time periods to artificial heating during brooding on productive parameters and ascites mortality in broilers. Two thousand seven hundred, one-day-old, Ross chickens were maintained in production until 53 days of age. Birds were distributed following a complete randomized design, in three treatment groups with nine replicates of 100 birds each. Treatments

Jos Arce Menocal; Eduardo Guti閞rez; Ernesto Avila


Edad de reproductora pesada y peso del huevo sobre los par醡etros productivos y la incidencia del s韓drome asc韙ico en la progenie Incidence of heavy breeding hen age and egg weight on progeny's productive performance and on ascitic syndrome  

Microsoft Academic Search

Two experiments were carried out with broilers with the object of assessing productive performance and susceptibility to ascitic syndrome (AS) in progeny of heavy breeding hens of diverse age and egg weight. In the first experiment, 1,500 broilers coming from 35, 44 and 53 weeks old hens, in the second experiment 1,500 broilers that came from differing egg weights (75,

Jos Arce Menocal; Ernesto Avila Gonz醠ez; Carlos L髉ez Coello


The Brazilian State Value-Added Tax (La taxe sur la valeur ajout茅e dans les Etats du Br茅sil) (El impuesto de los estados brasile帽os sobre el valor a帽adido)  

Microsoft Academic Search

In 1967 the Brazilian states abolished the heterogeneous turnover taxes that they had levied for 30 years and replaced them with a unified sales tax of the value-added type. The reform was designed to overcome the defects of turnover taxation and to secure a greater degree of tax coordination among the states of the Federation. The Brazilian experience is of



Ten Facts Every Parent Should Know about the No Child Left Behind Act = Diez datos que cada padre debe saber sobre La Ley. Que Ningun Nino Se Quede Atras.  

ERIC Educational Resources Information Center

The No Child Left Behind Act (NCLB) is President George W. Bush's education reform law passed by Republicans and Democrats in Congress. This flier, in both English and Spanish, details 10 facts concerning NCLB to inform parents as to the goals of the Act and how they will affect their child's school. The flier highlights how the Act: (1) gives

Department of Education, Washington, DC.


Manual de Adiestramiento sobre Terapia de Rehidratacion Oral y Control de las Enfermedades Diarreicas (Oral Rehydration Therapy and the Control of Diarrheal Diseases). Training for Development. Peace Corps Information Collection & Exchange Training Manual No. T-53.  

ERIC Educational Resources Information Center

This Spanish-language manual was developed to train Peace Corps volunteers and other community health workers in Spanish-speaking countries in oral rehydration therapy (ORT) and the control of diarrheal diseases. Using a competency-based format, the manual contains three training modules (organized in seven sessions) that focus on interrelated

Clark, Mari; And Others


[Treatment of type 2 diabetes mellitus in patients with chronic kidney disease. Grupo de Trabajo para el Documento de Consenso sobre el tratamiento de la diabetes tipo 2 en el paciente con enfermedad renal cr髇ica].  


Chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM) are highly prevalent chronic diseases, which represent an important public health problem and require a multidisciplinary management. T2DM is the main cause of CKD and it also causes a significant comorbidity with regard to non-diabetic nephropathy. Patients with diabetes and kidney disease represent a special risk group as they have higher morbi-mortality as well as higher risk of hypoglycemia than diabetic individuals with a normal kidney function. Treatment of T2DM in patients with CKD is controversial because of the scarcity of available evidence. The current consensus report aims to ease the appropriate selection and dosage of antidiabetic treatments as well as the establishment of safety objectives of glycemic control in patients with CKD. PMID:24268912

G髆ez-Huelgas, Ricardo; Mart韓ez-Castelao, Alberto; Artola, Sara; G髍riz, Jos Luis; Men閚dez, Edelmiro



M豻odo M猠 Canguru: aplica联o no Brasil, evid宯cias cient蘤icas e impacto sobre o aleitamento materno Kangaroo Mother Care: scientific evidences and impact on breastfeeding  

Microsoft Academic Search

Objective: To describe the history of the Kangaroo Mother Care and present scientific evidence about benefits of this practice on morbidity and mortality, psychological and neurological development and breastfeeding of low birth weight infants. Sources of data: Papers about Kangaroo Mother Care published from 1983 to 2004 were consulted, selected in Medline and Lilacs, as well as books, thesis and

Sonia Isoyama Venancio; Honorina de Almeida


La Fotografia de tem鄑ica escolar en arxius no especialitzats : notes sobre fons en imatge a Mallorca = The school photography in non specialized archives : notes about images collections in Majorca  

Microsoft Academic Search

L'article 閟 el resultat del treball de camp realitzat en col穕eccions fotogr鄁iques\\u000aprivades i biblioteques i arxius de titularitat p鷅lica no especialitzats de Mallorca, amb\\u000aintenci d'analitzar quantitativament i qualitativament quines imatges s'hi han conservat\\u000ade caire educatiu o escolar. 蓅 habitual trobar als 鄉bums familiars fotografies de\\u000acaire escolar; per se'n detecta una menor pres鑞cia en fons d'imatge de

Catalina Aguil Ribas; Maria-Josep Mulet Guti閞rez; Paula Pinya Llin鄐



Influencia de la fecha de siembra y distancia entre surcos sobre el establecimiento de asociaciones de desmanthus y el pasto klein Influence of row-spacing and planting date on the establishment of bundleflower-kleingrass mixtures  

Microsoft Academic Search

Understanding factors that affect the establishment of pastures is important to the management of persistent grass-legume mixtures. The objective of this study was to evaluate kleingrass (Panicum coloratum L.)-bundeflower (Desmanthus sp.) associations during the establishment year in terms of plant density and yield. The study was carried out at Brazos County, TX. (near College Station). Plots were drilled at a

Eduardo A. Gonz醠ez Valenzuela; Mark A. Hussey



Microsoft Academic Search

The inclusion of the Modern Physics in both High School and University initial semesters has been thought for a long time. Justifications have been pointed towards incitement and stimulation. However, when we think about education in universities, there is a worry concerning to the future teachers formation. A professor's didactical experience who inserted contemporaneous and modern physics elements in his

Ana A. Diniz; Ruy C. M. C. Ferraz; Alice Helena; C. Pierson




Microsoft Academic Search

Several studies suggest that emotional arousal can promote memory storage. We report two studies evaluating the ef fects of emotional content on declarative memory, conducted with healthy subjects and cephalgic patients. We utilized an adaptation of two versions of the same story, with different arousing properties (neutral or emotional), which have been already employed in experiments involving the enhancing effects

A. Gasbarri; B. Arnone; A. Pompili; A. Marchetti; P. Di Fabrizio; S. Saad Calil; M. C. Tavares; C. Tomaz


Reaching Higher. A Parent's Guide to the Washington Assessment of Learning. Revised = Para llegar mas arriba. Una guia para padres sobre la evaluacion del aprendizaje de los estudiantes del estado de Washington (Washington Assessment of Student Learning). Revisado.  

ERIC Educational Resources Information Center

This guide in English and Spanish is designed to answer questions parents may have about the Washington Assessment of Student Learning (WASL), including how it will help improve their children's education, how it is scored, and how to use the information it provides. In Washington, clear educational goals for subject content, thinking skills, and

Washington Office of the State Superintendent of Public Instruction, Olympia.


Receta para el Exito. Una Guia Actualizada para Padres sobre el Mejoramiento de las Escuelas de Colorado y Logros Estudiantiles (Recipe for Success: An Updated Parents' Guide to Improving Colorado Schools and Student Achievement).  

ERIC Educational Resources Information Center

This Spanish language guide describes ways that parents can help improve student achievement and school quality. It answers such questions as: how to choose the right early-education opportunity for a preschooler; how to make sure a 5-year-old is ready for school; how to help a daughter do well in school; how to work with a daughter's or son's

Taher, Bonnie; Durr, Pamela


A review of nitrates in drinking water: maternal exposure and adverse reproductive and developmental outcomes Revis鉶 sobre nitratos na 醙ua pot醰el: exposi玢o materna e rea珲es adversas ao desenvolvimento reprodutivo  

Microsoft Academic Search

In this review, we present an update on maternal exposure to nitrates in drinking water in relation to possible adverse reproductive and developmental effects, and discuss nitrates in drinking water in the United States. The current standard for nitrates in drinking water is based on retrospective studies and approximates a level that protects infants from methemoglobinemia, but no safety factor

Deana M. Manassaram; Lorraine C. Backer; Deborah M. Moll


Quantifying water and air redistribution in heterogeneous sand sample by neutron imaging  

NASA Astrophysics Data System (ADS)

Significant temporal variation of quasi saturated hydraulic conductivity (Kqs) has been observed to date in number of infiltration experiments conducted mainly on heterogeneous soil of Cambisol. The change of quasi-saturated hydraulic conductivity cannot be precisely described by existing models. The Kqs variations has been recently attributed to a changing distribution of the entrapped air and water within the sample. It is expected that air is moved to the preferential pathway and acts as a barrier there. To support this assumption a ponded infiltration experiment was conducted on a soil sample packed into the quartz glass column of inner diameter of 34 mm. The sample composition represents simplified heterogeneity of the natural soil but also allow the easy quantitative water content determination in individual subdomains of the sample. The matrix formed by a fine sand was surrounded with regions of coarse sand representing preferential flow pathways. The Kqs was determined from the known hydraulic gradient and measured volume flux. The experiment was monitored by neutron radiography. Volume of water in the sample calculated from neutron projections matched very well with actually infiltrated volume in the sample during first 40 second after beginning of infiltration. From the acquired radiographic images the 3D tomography images were reconstructed to obtain the spatial distribution of the water content within the sample. Difference between water volume calculated from radiography and tomography images was no more than 5%. While the total amount of water determined by NR within the sample during the quasi steady state flow remains practically constant (27.9 cm3 at the beginning and 28.6 cm3 on the end of infiltration) the water content in the coarse fraction decreases (from 0.333 to 0.324) and the water content in the fine fraction increases (from 0.414 to 0.436) in 5 hours. Similarly to previous experiments performed on natural Cambisols, the results support the hypothesis that the effect of the gradual Kqs variations is caused by the entrapped air redistribution and the build-up of bubbles in preferential pathways.

娽cha, Jan; Sobotkov, Martina; Jel韓kov, Vladim韗a; Sn?hota, Michal; Vontobel, Peter; Hovind, Jan



Organic matter composition of matrix-macropore interfaces in structured subsoils  

NASA Astrophysics Data System (ADS)

In structured soils, the interaction of percolating water and reactive solutes with the soil matrix is mostly restricted to surfaces of preferential flow paths. Surfaces of flow paths that are formed by cracks, decayed root channels or worm burrows are often covered by clay-organic coatings (i.e., cutanes), in which the outermost layer is mainly organic matter (OM). The composition of OM finally controls wettability, sorption, and transfer properties and thus may influence the water movement in structured soils. However, the in-situ local distribution of OM properties along such surfaces is largely unknown to date because experimental techniques to study the relatively thin and vulnerable coatings at intact structure surfaces were not available. The objective of this study was to analyze the local mm-scale OM distribution and composition at preferential flow paths of structured subsoils. We took samples from different soil types (Luvisol, Regosol, Stagnosol, Cambisol), of different geological provenance (till, loess, mudstone, limestone), and of different land use (arable, forest). The Fourier transformed infrared spectroscopy in diffuse reflectance mode (DRIFT) was used to determine spectral information in 1 mm steps along transects of 15 up to 65 mm length along the intact structural surfaces (cracks and biopores). The distribution of OM composition was characterized by evaluating the ratios of the absorption band intensities of the alkyl- (C-H-) and carbonyl (C=O-) functional groups (CH/CO), which represent a measure of the potential wettability of the OM of the surface. In general the CH/CO-ratios were higher for earthworm burrows and root channels as compared to crack surfaces and the soil matrix. Earthworm burrows of soils developed on loess (Haplic Luvisol) showed higher CH/CO-ratios than soils developed on till (Haplic Regosol, Albic Luvisol); the highest CH/CO-ratios occurred at worm burrows of both a Vertic Stagnosol and a Vertic Cambisol (mudstone, respectively). In case of the same structures and the same parent material, the CH/CO-ratios were higher for forest as compared to arable soil. The results suggest that the distribution of OM properties at flow path surfaces has to be considered for describing preferential flow and transport because they could affect sorption and mass transfer processes.

Leue, M.; Gerke, H. H.; Ellerbrock, R. H.



Spatial variability of cv Tempranillo phenology within the Ribera del Duero DO (Spain) related to soil type and plot characteristics  

NASA Astrophysics Data System (ADS)

Vineyards in the Ribera del Duero area (Spain) date back to the roman time, with significant fluctuations throughout the centuries, reaching consolidation and stable production in the 10th and 11th centuries. The present Ribera del Duero Designation of Origen (DO) started in 1980 and has increased from less than 6,000 ha planted to more than 21,000 ha planted by 2010 and becoming one the top regions for wine production in Spain with success in the global wine market. Vineyards of Ribera del Duero are found along 115 km of the Duero River. Within this distance, differences in elevation and topography produce differences in climate, which provide the means by which a zonification for vineyard management can be assessed. In this work, the differences in phenological growth characteristics for the Tempranillo variety were analyzed within the Ribera del Duero DO and related to soil and plot characteristics. Phenology dates, referenced to different Baggiolini classification stages, were evaluated in 20 control plots distributed throughout the Ribera del Duero DO during the period 2004-2012. These years presented different climatic characteristics, which were analyzed from daily temperature and precipitation series recorded from 1980 to 2012 at five stations located along the Duero River. Most vineyards were cultivated under rainfed conditions. In order to evaluate the spatial variability in phenology, climate and soils, the plots were classified using a hierarchical cluster multivariate analysis. Parameters such as the elevation, the distance to river and the soil type were taken into account in the classification. According to the WRB classification (2006) the main soil types in the area are Calcaric Cambisols, Eutric Cambisols, Calcic Luvisol, Calcaric fluvisols, Eutric fluvisols and in less proportion Lithic Leptosols and Calcaric Rogosols. Four different groups were observed, with differences in elevation, distance to the Duero River and the soil type. The differences in phenology among groups started in stage G and were observed until the end of the growing cycle. Despite the high variability driven by the year to year in climate characteristics, it was possible to define the soil and plot characteristics that favour advanced phenology within the Ribera del Duero DO.

Ramos, Maria C.; Jones, Gregory V.; Yuste, Jes鷖



Otra vez el Festival de las Am閞icas en Montreal  

E-print Network

introducci髇 de una nueva teatralidad en nuestro continente. Durante d閏adas el teatro latinoamericano estuvo permeado y sujeto al discurso pol韙ico, esto es, el teatro como medio para hacer pol韙ica, lo cual condujo, a nuestro ver, a una especie de... bancarrota teatral doble: por una parte, el teatro no reflexion sobre s mismo, sobre su oficio, sobre su especificidad misma como espect醕ulo y como trabajo sobre el actor y sobre el espacio esc閚ico: nuestras sociedades han cambiado, su discurso...

de Toro, Fernando



Investigacin Centro de Investigacin y de Estudios Avanzados del Instituto Politcnico Nacional  

E-print Network

Varaldo Biorrefiner铆a de residuales org谩nicos: Bioenerg铆as (biohidr贸geno, biometano, bioelectricidad) y inter茅s industrial Refugio Rodr铆guez V谩zquez Biorremediaci贸n de suelo y agua. Aplicaci贸n de residuos persistentes. y aplicaci贸n de la nanotecnolog铆a en el tratamiento biol贸gico de efluentes industriales. Junio


+ DEUTERIO *Villa Carmen  

E-print Network

R脥O + +颅 DEUTERIO ELEVACI?N SELVA BOSQUE NUBOSO PUNA CERAS SUELOS LLUVIA *Wayqecha *San Pedro AGUA O D Abundancia 10,000 3 O H H H El deuterio (D) es un 谩tomo de hidr贸geno (H) m谩s pesado porque tiene un neutr贸n adicional en su n煤cleo. En la naturaleza por cada 10,000 mol茅culas de agua con

McLeod, Dennis


Fundacin General de la UIB (FuGUIB) La Fundacin General de la Universidad de las Illes Balears (FuGUIB) es una institucin privada,  

E-print Network

de 51 personas equivalentes a tiempo completo, 61% mujeres. La FuGUIB cerr贸 el ejercicio econ贸mico el curso 2012-13 han sido las siguientes: renovaci贸n del mobiliario en las zonas comunes y las habitaciones, reposici贸n del suelo de los pasillos y zonas comunes, cambio del grupo de presi贸n para el agua

Oro, Daniel


A study of the direct determination of Cd, Cr, Cu, Pb and Zn in certified reference materials of soils by solid sampling electrothermal atomic absorption spectrometry  

NASA Astrophysics Data System (ADS)

A simple and rapid method for the direct determination of Cd, Cr, Cu, Pb and Zn in soil was developed. The method was developed using three certified reference materials of soil: Eutric Cambisol, Orthic Luvisols and Rendzina, which differed in their matrix composition. Chemical modifiers were essential to achieve reproducible and interference-free signals for the analytes studied. The best results were obtained with a Pd/Mg(NO 3) 2 admixture for the determination of Cd, Pb and Zn and NH 4F for Cu. The combination of W (as a permanent modifier) and Mg(NO 3) 2 provided well-defined signal profiles for Cr. The following spectral lines were used: Cd 228.8 nm, Cr 520.6 nm, Cu 218.2 nm, Pb 205.3 nm and Zn 307.6 nm. The limit of detection was 4.2 ng g - 1 for Cd, 1.1 ?g g - 1 for Cr, 0.5 ?g g - 1 for Cu, 1.3 ?g g - 1 for Pb and 8.6 ?g g - 1 for Zn for the maximum sample mass used. Under optimized conditions, the analyte and matrix were separated effectively in situ, and aqueous standards could be used for calibration.

T鰎鰇, Peter; 巈mberyov, M醨ia



Relationship between fire temperature and changes in chemical soil properties: a conceptual model of nutrient release  

NASA Astrophysics Data System (ADS)

The purpose of this study was to evaluate the effects of fire temperatures (i.e., soil heating) on nutrient release and aggregate physical changes in soil. A preliminary conceptual model of nutrient release was established based on results obtained from a controlled burn in a slash-and-burn agricultural system located in Brazil. The study was carried out in clayey subtropical soil (humic Cambisol) from a plot that had been fallow for 8 years. A set of three thermocouples were placed in four trenches at the following depths: 0 cm on the top of the mineral horizon, 1.0 cm within the mineral horizon, and 2 cm within the mineral horizon. Three soil samples (true independent sample) were collected approximately 12 hours post-fire at depths of 0-2.5 cm. Soil chemical changes were more sensitive to fire temperatures than aggregate physical soil characteristics. Most of the nutrient response to soil heating was not linear. The results demonstrated that moderate temperatures (< 400癈) had a major effect on nutrient release (i.e., the optimum effect), whereas high temperatures (> 500 癈) decreased soil fertility.

Thomaz, Edivaldo L.; Doerr, Stefan H.



The chronological position of the Lohne Soil in the Nussloch loess section - re-evaluation for a European loess-marker horizon  

NASA Astrophysics Data System (ADS)

The loess section of Nussloch in southwestern Germany is a key profile for the reconstruction of the terrestrial palaeo-environment of central Europe at the time of the Last Glacial and Interglacial. Recently, the significance of the site for palaeo-environmental and geoarchaeological research increased additionally, with the discovery of unique Palaeolithic cultural remains from anatomically and culturally modern humans that invaded southwestern Germany during the Weichselian (W黵mian) Pleniglacial period. At Nussloch, a chrono-stratigraphical key position is taken by a Middle Pleniglacial Cambisol remain which, under the designation Lohne Soil, serves as an important pedostratigraphic marker horizon for the greater area. Repeatedly, Greenland interstadial (GIS) 8 was suggested as a likely period of soil formation for the Lohne Soil. This interpretation is yet not justified on the basis of published chronometric data. Critical assessment of the data points to a later period of soil formation, likely during GIS7 to GIS5. This conclusion is supported by a new set of radiocarbon ages for the Nussloch site which are presented here for the first time. Consequences of a revised chronology for correlations of Pleniglacial Cryosols below and above the Lohne Soil with Greenland interstadials are discussed. The implications are important for European loess research as the Nussloch section serves as a reference base for loess sections throughout Europe.

Kadereit, Annette; Kind, Claus-Joachim; Wagner, G黱ther A.



Dynamics of Bacterial Communities in Two Unpolluted Soils after Spiking with Phenanthrene: Soil Type Specific and Common Responders  

PubMed Central

Considering their key role for ecosystem processes, it is important to understand the response of microbial communities in unpolluted soils to pollution with polycyclic aromatic hydrocarbons (PAH). Phenanthrene, a model compound for PAH, was spiked to a Cambisol and a Luvisol soil. Total community DNA from phenanthrene-spiked and control soils collected on days 0, 21, and 63 were analyzed based on PCR-amplified 16S rRNA gene fragments. Denaturing gradient gel electrophoresis (DGGE) fingerprints of bacterial communities increasingly deviated with time between spiked and control soils. In taxon specific DGGE, significant responses of Alphaproteobacteria and Actinobacteria became only detectable after 63?days, while significant effects on Betaproteobacteria were detectable in both soils after 21?days. Comparison of the taxonomic distribution of bacteria in spiked and control soils on day 63 as revealed by pyrosequencing indicated soil type specific negative effects of phenanthrene on several taxa, many of them belonging to the Gamma-, Beta-, or Deltaproteobacteria. Bacterial richness and evenness decreased in spiked soils. Despite the significant differences in the bacterial community structure between both soils on day 0, similar genera increased in relative abundance after PAH spiking, especially Sphingomonas and Polaromonas. However, this did not result in an increased overall similarity of the bacterial communities in both soils. PMID:22934091

Ding, Guo-Chun; Heuer, Holger; Smalla, Kornelia



Effects of mercury on reproduction, avoidance, and heat shock protein gene expression of the soil springtail Folsomia candida.  


Based on the Cambisols of Beijing (used as agricultural soils), toxicity tests were conducted to investigate the effects of mercury (Hg) on reproduction and avoidance of Folsomia candida (Hexapoda: Collembola), as well as the transcriptional responses of the hsp70 gene, under different Hg concentrations and at different exposure times. Results showed that the hsp70 gene of the springtail was the most sensitive parameter to soil Hg stress, with a half-maximal effective concentration (EC50) of 0.42 mg/kg. The EC50 values based on reproduction and avoidance tests were 9.29 and 3.88 mg/kg, respectively. The expression level of the hsp70 gene was significantly up-regulated when soil Hg concentration was over 0.25 mg/kg (lowest-observed-effect concentration [LOEC]). In addition, responses of this gene expression were strongly induced after 48 h exposure under 1 mg/kg soil Hg, which probably was due to the fast and sensitive response of the gene transcription to Hg stress. Thus, the results suggested that the responses of the hsp70 gene and individual-level effects (reproduction and avoidance) could be integrated to provide helpful information for environmental monitoring and assessment of contaminated soils. PMID:20821491

Liu, Yu-Rong; Zheng, Yuan-Ming; Zhang, Li-Mei; Luan, Yun-Xia; He, Ji-Zheng



Leptospirosis Outbreaks in Nicaragua: Identifying Critical Areas and Exploring Drivers for Evidence-Based Planning  

PubMed Central

Leptospirosis is an epidemic-prone zoonotic disease that occurs worldwide. In Central America, leptospirosis outbreaks have been reported in almost all countries; Nicaragua in particular has faced several outbreaks. The objective of this study was to stratify the risk and identify 揷ritical areas for leptospirosis outbreaks in Nicaragua, and to perform an exploratory analysis of potential 揹rivers. This ecological study includes the entire country (153 municipalities). Cases from 2004 to 2010 were obtained from the country抯 health information system, demographic and socioeconomic variables from its Census, and environmental data from external sources. Criteria for risk stratification of leptospirosis were defined. Nicaragua reported 1,980 cases of leptospirosis during this period, with the highest percentage of cases (26.36%) in Le髇, followed by Chinandega (15.35%). Among the 153 municipalities, 48 were considered critical areas, 85 were endemic and 20 silent. Using spatial and statistical analysis, the variable presenting the most evident pattern of association with critical areas defined by top quintile of incidence rate is the percentage of municipal surface occupied by the soil combination of cambisol (over pyroclastic and lava bedrock) and andosol (over a volcanic ashes foundation). Precipitation and percentage of rural population are also associated with critical areas. This methodology and findings could be used for Nicaragua抯 Leptospirosis Intersectoral Plan, and to identify possible risk areas in other countries with similar drivers. PMID:23202822

Schneider, Maria Cristina; N醞era, Patricia; Aldighieri, Sylvain; Bacallao, Jorge; Soto, Aida; Marqui駉, Wilmer; Altamirano, Lesbia; Saenz, Carlos; Marin, Jesus; Jimenez, Eduardo; Moynihan, Matthew; Espinal, Marcos



Comparative study on carbon accumulation in soils under managed and unmanaged forests in Central Balkan Mountains  

NASA Astrophysics Data System (ADS)

Each soil has a carbon storage capacity, which depends on many factors including type of soil, vegetation, precipitation and temperature. The aim of this work is to compare the carbon accumulation in forest floor layers and mineral soil horizons under managed and unmanaged spruce and beech forest ecosystems developed on Cambisols in Central Balkan Mountains, Bulgaria. We have investigated two managed and two unmanaged forests - pure stands of European beech (Fagus sylvatica L.) and Norway spruce (Picea abies Karst.). In each experimental site one representative soil profile was prepared with additional 4 sampling profiles for more precise determination of spatial variability of soil characteristic at site level. The forest floor was sampled in 3 repetitions per site, by a plastic frame (25:25 cm). The textural composition of soil, bulk density, coarse fraction content, pH, carbon and nitrogen content were analysed for forest floor layers and soil at different soil depths (0-10 cm, 10-20 cm, 20-30 cm and 30-50 cm). Both European beech and Norway spruce stands had higher accumulation of organic matter in the forest floor and the Ah horizon under unmanaged conditions. When managed, carbon contents tended to be higher in deeper horizons of the mineral soil, probably due to differences in microclimate after cutting. However, the variability in carbon storage was higher in managed sites which may reflect a higher degree of disturbance. Further work will analyse the soil carbon dynamics using radiocarbon as a tracer.

Naydenova, Lora; Zhiyanski, Miglena; Leifeld, Jens



An experience in using the world reference base for soil resources for the soils of western Georgia  

NASA Astrophysics Data System (ADS)

New and previously published data on the soils of western Georgia are generalized, and traditional soil names are correlated with the units of the World Reference Base for Soil Resources. It is argued that krasnozems (red ferrallitic soils) can be attributed to the group of Nitisols (the soils characterized by intense weathering (ferralization) and having shiny ped faces in the nitic horizon); yellow and yellow-brown soils (zheltozems), to the group of Luvisols (the soils with relatively high adsorption capacity in the eluvial horizons and with the horizon of the illuvial accumulation of clay); yellow-podzolic (zheltozem-podzolic) soils, to Alisols (slightly acid soils with the low adsorption capacity, poor aggregation of the upper horizons, low-activity (kaolinite) clay, and with the horizon of clay accumulation (argic horizon)); brown forest soils, to Cambisols (the soils with the cambic horizon characterized by some alteration of the lithogenic texture and structure into the pedogenic texture and structure); and mountainous forest-meadow and meadow soils, to Umbrisols (the soils with the dark-colored unsaturated umbric horizon).

Urushadze, T. F.; Kvrivishvili, T. O.; Sanadze, E. V.



Conventional tillage versus organic farming in relation to soil organic carbon stock in olive groves in Mediterranean rangelands (southern Spain)  

NASA Astrophysics Data System (ADS)

Soil organic carbon (SOC) concentration is a soil variable subject to changes. The management system is a key factor that influences these changes. To determine the long-term effects of the management system on SOC stocks (SOCS) in olive groves, 114 soil profiles were studied in the Los Pedroches Valley (Mediterranean rangelands - southern Spain) for 20 years. The management practices were conventional tillage (CT) and organic farming (OF) in four soil types: Cambisols (CMs), Regosols (RGs), Luvisols (LVs) and Leptosols (LPs). Soil properties were statistically analysed by management techniques, soil types and horizons. Significant differences (p < 0.05) were found between soil types and management practices. It was equally observed that the management system affected SOCS. In addition, the total SOCS during the 20-year experiment increased in OF with respect to CT by 72 and 66% in CMs and LVs respectively. SOC showed significant differences for horizons (p < 0.05) in relation to the management type. The stratification ratio (SR) was used as an indicator of soil quality based on the influence of surface SOC levels on erosion control, water infiltration and nutrient conservation with respect to deep layers. The SR of SOC from the surface to depth was greater in CT compared to OF with the exception of RGs. In all cases, the SR of SOC was >2. These results indicate high soil quality and that management practices affect SOC storage in the Los Pedroches Valley.

Parras-Alc醤tara, L.; Lozano-Garc韆, B.



Long-term fertilization effects on soil organic carbon fractions in a red soil of southern China  

NASA Astrophysics Data System (ADS)

This paper presents a study of long-term (17 years) fertilization effects on soil organic carbon (SOC) fractions in a typical red soil (Ferralic Cambisol) under intensive cropping with maize-wheat with various fertilizations in Hunan, China. The fertilization treatments include non-fertilization (Control), mineral nitrogen (N), mineral nitrogen-phosphorus (NP), nitrogen-phosphorus-potassium combination (NPK), and mineral NPK combined with organic amendments (e.g., pig manure and straw). Two sets of soil samples were used: (1) collected in 1990, and (2) collected in 2007. Soil samples were separated to measure free particulate organic C (fPOC), intra-microaggregate particulate organic C (iPOC), and mineral associated organic C (MOC) with physical fractionation. The percentage of SOC fractions in all treatments follows an order: MOC (45-89%) >fPOC (7-35%) >iPOC (11-20%), suggesting that MOC is the primary organic carbon pool in the red soil. Compared with the control, there is no increase in iPOC and MOC under imbalanced mineral fertilizer applications (i.e., N, NP). However, all SOC fractions show a significant increase under balanced mineral fertilizer application (NPK), and mineral NPK applied with organic amendments. Particularly, manure application results in an increase of 290.6-408.3 kg ha-1 yr-1 for fPOC, 162.0-179.2 kg ha-1 yr-1 for iPOC and 322.9-514.5 kg ha-1 yr-1 for MOC.

Tong, X.; Xu, M.; Wang, X.; Zhang, W.; Cong, R.



Characterizing soil macroporosity by X-ray microfocus computed tomography and quantification of the coring damages.  

NASA Astrophysics Data System (ADS)

X-ray Computed Tomography (X-ray 礐T) was employed to characterize vertical variations of structural porosity of a soil profile (pore dimension higher than 5.103 祄3). Three distinct horizons of a Cambisol have been studied for a total depth of 75 cm: L, S1/S2 and S2/SFe horizons. Samples have been cored in situ by driving in PVC tubes (inner diameter 10 cm). From reconstructed and filtered volumes, pores segmentation allows to study variations of structural porosity within the profile. Two kinds of porosity were identified: biological pores (tube-like) and physical pores (fracture-like). Structural porosity content varies strongly according to the horizons: from 5.48% in the L horizon to 6.48% in the S1/S2 horizon. The 3D connectivity of both of these pore types was also assessed. During sampling, soil shearing induced damages around the cores. Identification and quantification of the damaged zone was performed from the calculation of porosity profile from core surface to core heart. In average, the damaged zone reaches a depth of 1 cm. Porosity loss (compaction) or porosity increase (fracturing) was observed according to the studied profile.

Gallier, J.; Hubert, F.; Robinet, J. C.; Sardini, P.; Caner, L.



Release of aged 14C-atrazine residues from soil facilitated by dry-wet cycles  

NASA Astrophysics Data System (ADS)

Intermittent dry-wet cycles may have an important effect on soil structure and aged pesticide residues release (1). A laboratory study was conducted to assess the maximum potential of water extractable aged atrazine residues influenced by soil drying and wetting. The used soil was obtained from an outdoor lysimeter (gleyic cambisol; Corg: 1.45%), containing environmentally aged (22 years) 14C-atrazine residues. For the experiment, soil from 0-10 cm depth was used since most residual 14C activity was previously found in this layer (2,3). Triplicate soil samples with a residual water content of approx. 8% were either dried (45 C) prior water addition or directly mixed with distilled water (soil+water: 1+2, w:w). The samples were shaken (150 rmp, 60 min, at 21 C), centrifuged (approx. 2000 g), and the supernatants were filtered. Water-extracted residual 14C activity was detected via liquid scintillation counter. The total water-extracted 14C activity (the amount of residual 14C activity in a sample equals 100%) was significantly higher (p

Jablonowski, N. D.; Yu, K.; Koeppchen, S.; Burauel, P.



Study of mineralogical speciation of arsenic in soils using X ray microfluorescence and scanning electronic microscopy.  


In this paper we studied the As content in natural contaminated soils, classified as Dystric Leptosol, Chromic Luvisol, Eutric Cambisol and Mollic Leptosol. In soil samples, sieved (<2mm), total As was determined by XRF and chemical speciation by sequential extraction. As-bearing minerals were concentrated from fine sand fraction of soil (200-20 ?m) using heavy liquid. In this fraction, mineralogical speciation was studied by X-ray microfluorescence, XRD with G鯾bel mirror and SEM-BEI-EDX. Total As contents ranging from 61.00 to 131.00 mg kg(-1). The results of the sequential extraction showed that As was, mainly, in the residual fraction (52.51-98.76 mg kg(-1)) and in the fraction bound to iron oxyhydroxides (0-36.5 mg kg(-1)). Mapping of As with X-ray microfluorescence show strongly relationship between Fe and As. Iron (III) oxyhydroxides (FeOHs) (lepidocrocite and goethite), scorodite, angelellite, schultenite and dussertite were identified by XRD analysis as most likely mineral phases. The contents of As, Fe, Pb and Ba obtained with EDX-microprobe, confirmed the results of XRD. The results of sequential extraction and X-ray microfluorescence indicate that As is strongly bound to the soils because the identified As-bearing mineral phases are very stable at the pH conditions of studied soils. Consequently, a low mobility of As can be assumed in these soils. PMID:21482293

G髆ez-Parrales, Isidoro; Bellinfante, Nicol醩; Tejada, Manuel



Effect of application of phosphate and organic manure-based fertilizers on arsenic transformation in soil columns.  


The mobility of arsenic in Cambisol under the influence of added barnyard manure and application of a phosphate solution to the soil was described on the basis of column experiments. A soil sample containing 126 mg/kg total As and 3.72 mg/kg specifically-sorbed As was extracted using demineralized water (DIW) or a 28 micromol/l phosphate solution in a column containing untreated soil and in a column with added barnyard fertilizer. The pH, Eh, alkalinity, main components, including DOC, and selected trace elements (Al, Mn, Pb, Cu, Zn, Cd, Cr, Co, Ni, Ba and As) were determined in the extracts. Hydrodynamic tests of the flow and transport of the substances in the columns were carried out. The addition of barnyard manure was manifested in elevated concentrations of the main inorganic components, DOC and Al and a decrease in the Eh value and Mn concentration. Application of a phosphate solution was manifested in a decrease in the NO(3) and SO(4) concentrations, probably as a result of the effect of increased biological fixation. The As concentration in extracts varied from 8.8 to 15.5 microg/l and was not dependent on the composition of the extracting solution or the addition of barnyard fertilizer. PMID:17370134

Sisr, Ludek; Mihaljevic, Martin; Ettler, Vojtech; Strnad, Ladislav; Sebek, Ondrej



Full Length Research Paper Patterns of vegetation diversity of grasslands and pastures Crvanj Mt. (Herzegovina, Western Balkan)  

E-print Network

This paper represents study results of patterns of structure and dynamics of grasslands and pastures communities on vertical profile of Crvanj Mt. in Herzegovina (W. Balkan. Investigated area is situated between co-ordinates N 43 and 4330 ' and E 18 and 1830'. From the orography point of view, the area is very heterogenous. It encompases numerous peaks, valleys, passages and diverse karst formations. The highest peak is Zimomor (1920 m), while the lowest point is Ulog (670 m). The area is also very heterogenous from standpoint of geology. Thus, here occur marls, calcarenits, limestones, sandstones and dolomites. From division of automorphous soils it occur calcocambisol, calcomelanosol and luvisol on limestone, while distric cambisol and ranker occur on ingenious rocks. The most frequent among hydromorphous soils here are pseudogley, eugley, histosol (peat) and fluvisol. Ecoclimate is humid and perhumid, and in terms of temperature it is moderately warm to moderately cold. Mean annual temperature varies between 8.5癈 on the foot of mountain and 2.0癈 in the highest zone. Annual precipitation is 1700 mm, reaching maximum values in autumn and winter. Detected are grassland and pasture communities belonging to nine different alliances, five orders and three classes. It is described new community Asphodelo-Agrostietum capillaris Redzic ass. nova hoc loco from the alliance Festuco-Agrostion capillaris, order Festuco-Agrostietalia and community of Scillo litardierei-Molinietum

Sulejman Red瀒?; Sabina Traki?; Senka Barudanovi?



Community Level Physiological Profiles (CLPP), Characterization and Microbial Activity of Soil Amended with Dairy Sewage Sludge  

PubMed Central

The aim of the present work was to assess the influence of organic amendment applications compared to mineral fertilization on soil microbial activity and functional diversity. The field experiment was set up on a soil classified as an Eutric Cambisol developed from loess (South-East Poland). Two doses of both dairy sewage sludge (20 Mg穐a?1 and 26 Mg穐a?1) and of mineral fertilizers containing the same amount of nutrients were applied. The same soil without any amendment was used as a control. The soil under undisturbed native vegetation was also included in the study as a representative background sample. The functional diversity (catabolic potential) was assessed using such indices as Average Well Color Development (AWCD), Richness (R) and Shannon朩eaver index (H). These indices were calculated, following the community level physiological profiling (CLPP) using Biolog Eco Plates. Soil dehydrogenase and respiratory activity were also evaluated. The indices were sensitive enough to reveal changes in community level physiological profiles due to treatment effects. It was shown that dairy sewage amended soil was characterized by greater AWCD, R, H and dehydrogenase and respiratory activity as compared to control or mineral fertilized soil. Analysis of variance (ANOVA) and principal component analysis (PCA) were used to depict the differences of the soil bacterial functional diversity between the treatments. PMID:22737006

Fr?c, Magdalena; Oszust, Karolina; Lipiec, Jerzy



Prevenci髇 del c醤cer de boca (PDQ)

Sumario de informaci髇 revisada por expertos sobre factores que pueden influir en el riesgo de presentar c醤cer de labio o de boca, y sobre las investigaciones dirigidas a la prevenci髇 de esta enfermedad.


La terapia hormonal para la menopausia y el c醤cer

Hoja informativa acerca de los resultados de los estudios sobre el uso de la terapia hormonal para la menopausia. Incluye informaci髇 sobre el efecto de esta terapia en el cuerpo y explica los riesgos y beneficios del uso de hormonas.


Instant醤ea del c醤cer de es骹ago

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de es骹ago; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea del c醤cer de pr髎tata

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de pr髎tata; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea de los c醤ceres de h韌ado y de las v韆s biliares

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre los c醤ceres de h韌ado y de las v韆s biliares; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de estos tipos de c醤cer.


Instant醤ea del c醤cer de vejiga

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de vejiga; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea de los c醤ceres de cerebro y del sistema nervioso central

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre los c醤ceres de cerebro y del sistema nervioso central; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de estos tipos de c醤cer.


Instant醤ea del c醤cer colorrectal

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer colorrectal; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea del c醤cer de seno (mama)

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de seno (mama); as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea del c醤cer de cuello uterino

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de cuello uterino; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea del sarcoma de Kaposi

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el sarcoma de Kaposi; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Instant醤ea del c醤cer de pulm髇

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de pulm髇; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Consejos para pacientes que reciben radioterapia

Una serie de 11 p醙inas individuales que ofrece consejos sobre c髆o controlar los efectos secundarios de la radioterapia. Cada p醙ina incluye el punto de vista de personas con cancer sobre la radioterapia.


Instant醤ea del c醤cer de endometrio

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de endometrio; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


Calcio y la prevenci髇 del c醤cer: solidez y l韒ites de la evidencia cient韋ica

Hoja informativa que resume los resultados de estudios sobre el calcio y la prevenci髇 del c醤cer. Incluye informaci髇 sobre las recomendaciones diet閠icas para calcio y la cantidad de calcio en los alimentos y en complementos de calcio.


Instant醤ea del c醤cer de p醤creas

Informaci髇 sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre el c醤cer de p醤creas; as como ejemplos de actividades del NCI y adelantos en la investigaci髇 de este tipo de c醤cer.


La deforestaci髇 y los derechos de propiedad en Am閞ica Latina  

Microsoft Academic Search

En el presente documento se analiza la vinculaci髇 entre los derechos de propiedad y la deforestaci髇 en Am閞ica Latina. Seg鷑 ese an醠isis, hay dos esferas separadas en que las cuestiones relacionadas con la tenencia inciden sobre el inter閟 en el desmonte, a saber, la seguridad de los derechos de propiedad individual sobre las tierras agr韈olas establecidas y sus efectos sobre

Carlos Felipe Jaramillo; Thomas Kelly



New liyerary forms for the social sciences: autoethnography  

Microsoft Academic Search

Este es un trabajo sobre el momento de escribir en el proceso de la investigaci髇. Es decir sobre el poder de la escritura. La posmodernidad no ha pasado en vano por la psicolog韆 social, ni por el resto de ciencias sociales. Ha aportado un debate crucial sobre las formas de expresi髇 de la ciencia establecida y los efectos de poder

Joel Feliu


Nuevas formas literarias para las ciencias sociales: el caso de la autoetnograf韆  

Microsoft Academic Search

Este es un trabajo sobre el momento de escribir en el proceso de la investigaci髇. Es decir sobre el poder de la escritura. La posmodernidad no ha pasado en vano por la psicolog韆 social, ni por el resto de ciencias sociales. Ha aportado un debate crucial sobre las formas de expresi髇 de la ciencia establecida y los efectos de poder

Joel Feliu i Samuel-Lajeunesse



Notas para uma Avalia玢o do Discurso Marxista em Douglass North  

Microsoft Academic Search

A partir da publica玢o do livro Institutions, Institutional Change and Economic Performance em 1990 e da obten玢o do Nobel em 1993, as contribui珲es de Douglass North parecem ter entrado definitivamente no debate sobre a quest鉶 do desenvolvimento das economias no longo prazo. Muito se discute atualmente sobre a natureza da obra de North, mais especificamente sobre o grau de neoclassicismo

Gabriel Gal韕olo; Paulo Gala; Danilo Araujo Fernandes



Decontaminating Flooded Wells (Spanish)  

E-print Network

ER-011S 10-07 Mark L. McFarland, Profesor Adjunto y Especialista en Recursos H?dricos de Extensi?n; Diane E. Boellstorff, Especialista en Programa Calidad de Agua; Tony L. Provin, Profesor Adjunto y Qu?mico de Suelos de Extensi?n; Monty C. Dozier..., Profesor Adjunto y Especialista en Recursos H?dricos de Extensi?n; Nikkoal J. Dictson, Especialista en Programa Calidad de Agua Sistema Universitario Texas A&M Si se ha inundado su pozo, debe asumir que el agua en ?l se ha contaminado. No utilice el...

Boellstorff, Diana; Dozier, Monty; Provin, Tony; Dictson, Nikkoal; McFarland, Mark L.



On-Site Wastewater Treatment Systems: Pump Tank (Spanish)  

E-print Network

?n dosificadas en intervalos al suelo. Los tanques bomba forman parte de varios tipos de sistemas individuales de distribuci?n de aguas negras, entre ellos, los sistemas de dosificaci?n de baja presi?n, los sistemas de goteo subterr?neo y los sistemas de rociado... de bombas: bombas de baja carga y bombas de alta carga. Las bombas de baja carga se usan en sistemas que procesan relativamente grandes vol?menes de agua a baja presi?n; entre estos sistemas, se encuen- tran los campos de drenaje de efluente bombeado...

Lesikar, Bruce J.; Enciso, Juan



Effect of soil type and soil management on soil physical, chemical and biological properties in commercial organic olive orchards in Southern Spain  

NASA Astrophysics Data System (ADS)

One of the objectives of organic agriculture is to maintain and improve soil quality, while simultaneously producing an adequate yield. A key element in organic olive production is soil management, which properly implemented can optimize the use of rainfall water enhancing infiltration rates and controlling competition for soil water by weeds. There are different soil management strategies: eg. weed mowing (M), green manure with surface tillage in spring (T), or combination with animal grazing among the trees (G). That variability in soil management combined with the large variability in soil types on which organic olive trees are grown in Southern Spain, difficult the evaluation of the impact of different soil management on soil properties, and yield as well as its interpretation in terms of improvement of soil quality. This communications presents the results and analysis of soil physical, chemical and biological properties on 58 soils in Southern Spain during 2005 and 2006, and analyzed and evaluated in different studies since them. Those 58 soils were sampled in 46 certified commercial organic olive orchards with four soil types as well as 12 undisturbed areas with natural vegetation near the olive orchards. The four soil types considered were Eutric Regosol (RGeu, n= 16), Eutric Cambisol (CMeu, n=16), Calcaric Regosol (RGca, n=13 soils sampled) and Calcic Cambisol (CMcc), and the soil management systems (SMS) include were 10 light tillage (LT), 16 sheep grazing (G), 10 tillage (T), 10 mechanical mowing (M), and 12 undisturbed areas covered by natural vegetation (NV-C and NV-S). Our results indicate that soil management had a significant effect on olive yield as well as on key soil properties. Among these soil properties are physical ones, such as infiltration rate or bulk density, chemical ones, especially organic carbon concentration, and biological ones such as soil microbial respiration and bacterial community composition. Superimpose to that soil management induced variability, there was a strong interaction with soil type and climate conditions. There was also a relatively high variability within the same soil management and soil type class, indicating farm to farm variability in conditions and history of soil management. Based on this dataset two different approaches were taken to: A) evaluate the risk of soil degradation based on a limited set of soil properties, B) assess the effect of changes in SMS on soil biodiversity by using terminal restriction profiles (TRFs) derived from T-RFLP analysis of amplified 16S rDNA as. The results indicates the potential of both approaches to assess the risk of soil degradation (A) and the impact on soil biodiversity (B) upon appropriate benchmarking to characterize the interaction between soil management and soil type References 羖varez, S., Soriano, M.A., Landa, B.B., and G髆ez, J.A. 2007. Soil properties in organic olive orchards compared with that in natural areas in a mountainous landscape in southern Spain. Soil Use Manage 23:404-416. G髆ez, J.A., 羖varez, S., and Soriano, M.A. 2009. Development of a soil degradation assessment tool for organic olive groves in southern Spain. Catena 79:9-17. Landa, B.B., Montes-Borrego, M., Aranda, S., Soriano, M.A., G髆ez, J.A., and Navas-Cort閟, J.A. 2013. Soil factors involved in the diversity and structure of soil bacterial communities in commercial organic olive orchards in Southern Spain. Environmental Microbiology Reports (accepted) Soriano, M.A., 羖varez, S., Landa, B.B., and G髆ez, J.A. 2013. Soil properties in organic olive orchards following different weed management in a rolling landscape of Andalusia, Spain. Renew Agr Food Syst (in press), doi:10.1017/S1742170512000361.

Gomez, Jose Alfonso; Auxiliadora Soriano, Maria; Montes-Borrego, Miguel; Navas, Juan Antonio; Landa, Blanca B.



Combining a coupled FTIR-EGA system and in situ DRIFTS for studying soil organic matter in arable soils  

NASA Astrophysics Data System (ADS)

An optimized spectroscopic method combining quantitative evolved gas analysis via Fourier transform infrared spectroscopy (FTIR-EGA) in combination with a qualitative in situ thermal reaction monitoring via diffuse reflectance Fourier transform infrared spectroscopy (in situT DRIFTS) is being proposed to rapidly characterize soil organic matter (SOM) to study its dynamics and stability. A thermal reaction chamber coupled with an infrared gas cell was used to study the pattern of thermal evolution of carbon dioxide (CO2) in order to relate evolved gas (i.e., CO2) to different qualities of SOM. Soil samples were taken from three different arable sites in Germany: (i) the Static Fertilization Experiment, Bad Lauchst鋎t (Chernozem), from treatments of farmyard manure (FYM), mineral fertilizer (NPK), their combination (FYM + NPK) and control without fertilizer inputs; (ii) Kraichgau; and (iii) Swabian Alb (Cambisols) areas, Southwest Germany. The two latter soils were further fractionated into particulate organic matter (POM), sand and stable aggregates (Sa + A), silt and clay (Si + C), and NaOCl oxidized Si + C (rSOC) to gain OM of different inferred stabilities; respiration was measured from fresh soil samples incubated at 20 癈 and 50% water holding capacity for 490 days. A variable long path length gas cell was used to record the mid-infrared absorbance intensity of CO2 (2400 to 2200 cm-1) being evolved during soil heating from 25 to 700 癈 with a heating rate of 68 癈 min-1 and holding time of 10 min at 700 癈. Separately, the heating chamber was placed in a diffuse reflectance chamber (DRIFTS) for measuring the mid-infrared absorbance of the soil sample during heating. Thermal stability of the bulk soils and fractions was measured via the temperature of maximum CO2 evolution (CO2max). Results indicated that the FYM + NPK and FYM treatments of the Chernozem soils had a lower CO2max as compared to both NPK and CON treatments. On average, CO2max of the Chernozem was much higher (447 癈) as compared to the Cambisol sites (Kraichgau 392 癈; Swabian Alb 384 癈). The POM fraction had the highest CO2max (477 癈), while rSOC had a first peak at 265 癈 at both sites and a second peak at 392 癈 for the Swabian Alb and 482 癈 for the Kraichgau. The CO2max increased after 490 day incubation, while the C lost during incubation was derived from the whole temperature range but a relatively higher proportion from 200 to 350 癈. In situT DRIFTS measurements indicated decreases in vibrational intensities in the order of C-OH = unknown C vibration < C-H < -COO/C =C < C = C with increasing temperature, but interpretation of vibrational changes was complicated by changes in the spectra (i.e., overall vibrational intensity increased with temperature increase) of the sample during heating. The relative quality changes and corresponding temperatures shown by the in situT DRIFTS measurements enabled the fitting of four components or peaks to the evolved CO2 thermogram from the FTIR-EGA measurements. This gave a semi-quantitative measure of the quality of evolved C during the heating experiment, lending more evidence that different qualities of SOM are being evolved at different temperatures from 200 to 700 癈. The CO2max was influenced by long-term FYM input and also after 490 days of laboratory incubation, indicating that this measurement is an indicator for the relative overall SOM stability. The combination of FTIR-EGA and in situT DRIFTS allows for a quantitative and qualitative monitoring of thermal reactions of SOM, revealing its relative stability, and provides a sound basis for a peak fitting procedure for assigning proportions of evolved CO2 to different thermal stability components.

Demyan, M. S.; Rasche, F.; Sch黷t, M.; Smirnova, N.; Schulz, E.; Cadisch, G.



Soil as one of the Istrian terroir attributes  

NASA Astrophysics Data System (ADS)

The first written document of viniculture and wine production in Istria dates from antiquity, indicating a very long tradition. Istrian wines are very well known for its quality. It has been commonly accepted that quality, taste and style of wine depends on terroir, i.e. the local environment (eg. soil, bedrock, climate). Good terroirs are those permitting complete but quite slow maturation of cultivars. Although nowadays a strong debate arises concerning the concept of terroir, mainly referring to the relationship between soil properties and wine quality, our goal was to define different soils in Istrian vineyards, to compare their composition and properties and to explain how they could indirectly influence wine quality. As Istrian Malvasia, an indigenous grapevine variety, is the most widespread cultivar in Istria (1,858.8ha, i.e. about 60% of total vineyard surface), soils on different bedrock in vineyards of these variety were chosen for investigation. The studied vineyards, held by the three most prominent Istrian viticulturists known for high and constant quality of this sort of wine with some difference in taste and style, are as follows: (1) Monte Coronichi characterised by soil developed on Cretaceous limestone and wine of characteristic gentle fruit aroma and nice roundness and saltines; (2) Sveta Lucija characterised by soil developed on Eocene flysch and wine with fruit flavour, good body and extract; and (3) Grimalda characterised by soil developed of Eocene flysch and wine with delicate ripe fruit aroma, very good balance and saltines. The study comprised of field soil characterization and collection of disturbed and undisturbed samples from each soil horizon, as well as comprehensive pedological, mineralogical and geochemical soil analyses. It was determined that terra rossa soil is present on limestone at Monte Coronichi; while two different soils are developed on Eocene flysch, vertic cambisol at Sveta Lucija and eutric brown soil at Grimalda. While terra rossa has the same texture throughout profile (clay), the texture of the other two soils varies from silty clay to loam, creating conditions for better drainage. The mineral content of these soils differs significantly. Kaolinite, followed by illite, quartz and hematite dominate in terra rossa. Calcite, followed by quartz and plagioclase dominate in vertic cambisol which clay mineral content is represented by illite and swelling clays. The main mineral phases of Grimalda soil are calcite, quartz and mixed layered clays. Clay mineral content of these soils is in line with cation exchange capacity indicating higher nutrient retention in soils developed on flysch. It should be emphasised that soil is only one of many attributes of terroir which could influence the taste of the wine. Data acquired in this investigation could be used for the appellation, i.e. a legally defined and protected geographical indication, of Istrian Malvasia.

Mileusni?, Marta; Toma歩?, Elizabeta; Durn, Goran; Ottner, Franz; Wriessnig, Karin; Gracin, Leo; Husnjak, Stjepan



The creation of a digital soil map for Cyprus using decision-tree classification techniques  

NASA Astrophysics Data System (ADS)

Considering the increasing threats soil are experiencing especially in semi-arid, Mediterranean environments like Cyprus (erosion, contamination, sealing and salinisation), producing a high resolution, reliable soil map is essential for further soil conservation studies. This study aims to create a 1:50.000 soil map covering the area under the direct control of the Republic of Cyprus (5.760 km2). The study consists of two major steps. The first is the creation of a raster database of predictive variables selected according to the scorpan formula (McBratney et al., 2003). It is of particular interest the possibility of using, as soil properties, data coming from three older island-wide soil maps and the recently published geochemical atlas of Cyprus (Cohen et al., 2011). Ten highly characterizing elements were selected and used as predictors in the present study. For the other factors usual variables were used: temperature and aridity index for climate; total loss on ignition, vegetation and forestry types maps for organic matter; the DEM and related relief derivatives (slope, aspect, curvature, landscape units); bedrock, surficial geology and geomorphology (Noller, 2009) for parent material and age; and a sub-watershed map to better bound location related to parent material sources. In the second step, the digital soil map is created using the Random Forests package in R. Random Forests is a decision tree classification technique where many trees, instead of a single one, are developed and compared to increase the stability and the reliability of the prediction. The model is trained and verified on areas where a 1:25.000 published soil maps obtained from field work is available and then it is applied for predictive mapping to the other areas. Preliminary results obtained in a small area in the plain around the city of Lefkosia, where eight different soil classes are present, show very good capacities of the method. The Ramdom Forest approach leads to reproduce soil classes with a success percentage included between 88% (calcaric fluvic Cambisols and vertic Cambisols) and 96% (skeletric calcaric Regosols and calcaric lithic Leptosols). In a parallel study, characteristic profiles are assigned to every soil class. The soil classes will be field checked with mapped and unmapped areas including points with new soil properties. This study is part of the AGWATER project (AEIFORIA/GEORGO/0311(BIE)/06), co-financed by the European Regional Development Fund and the Republic of Cyprus through the Research Promotion Foundation. Cohen, D.R., Rutherford, N.F., Morisseau, E., and Zissimos, A.M.: Geochemical Atlas of Cyprus. Sydney: UNSW Press; 2011. McBratney, A.B., Mendon鏰 Santos, M.L., and Minasny, B.: On digital soil mapping. Geoderma 117, 3-52, 2003 Noller, J.: The Geomorphology of Cyprus. Cyprus Geological Survey, Open File Report, 269 p, 2009.

Camera, Corrado; Zomeni, Zomenia; Bruggeman, Adriana; Noller, Joy; Zissimos, Andreas



Infiltration in heterogeneous soil monitored by neutron imaging  

NASA Astrophysics Data System (ADS)

The process of infiltration in near-saturated soil and fate of residual air bubbles was studied using neutron imaging. It is the continuation of previous study on flow instability. Ponding infiltration-outflow experiment conducted at NEUTRA beamline of the Spallation Neutron Source Division, Paul Scherrer Institut aimed at i) characterizing the types of structures susceptible to air trapping, ii) monitoring of entrapped air and water redistribution during steady state flow iii) imaging the process of entrapped air dissolution. Experiments were conducted on series of undisturbed samples of soil from the Cambisol series and on an artificially prepared sample. The latter was composed of coarse sand (representing pathways of fast preferential flow), which surrounded blocks of fine ceramic. Cumulative infiltration and outflow fluxes of water were measured gravimetrically by two precision digital scales thus the full water balance data were obtained. Small samples (30 mm in diameter) were used to achieve good spatial resolution of neutron images. Degassed water was used to dissolve bubbles of entrapped air at the end of infiltration experiments. The neutron radiography and tomography data show quantitatively exchange of water and air between domains of fine and coarse materials during quasi-steady state flow in the sample. The redistribution of the entrapped air directly affected the hydraulic conductivity. On neutron tomography images the gradual dissolving of trapped air bubbles was clearly detected. The effect also led to significant increase of hydraulic conductivity. The obtained data show clearly that air as a non-wetting phase should not be overlooked in case of near-saturated infiltration in soil with preferential flow. The research was supported by the Czech Science Foundation Project No. 14-03691S.

Snehota, Michal; Sobotkova, Martina; Jelinkova, Vladimira; Sacha, Jan; Vontobel, Peter; Cislerova, Milena



Si cycling in a forest biogeosystem - the importance of transient state biogenic Si pools  

NASA Astrophysics Data System (ADS)

The relevance of biological Si cycling for dissolved silica (DSi) export from terrestrial biogeosystems is still in debate. Even in systems showing a high content of weatherable minerals, like Cambisols on volcanic tuff, biogenic Si (BSi) might contribute > 50% to DSi (Gerard et al., 2008). However, the number of biogeosystem studies is rather limited for generalized conclusions. To cover one end of controlling factors on DSi, i.e., weatherable minerals content, we studied a forested site with absolute quartz dominance (> 95%). Here we hypothesise minimal effects of chemical weathering of silicates on DSi. During a four year observation period (05/2007-04/2011), we quantified (i) internal and external Si fluxes of a temperate-humid biogeosystem (beech, 120 yr) by BIOME-BGC (version ZALF), (ii) related Si budgets, and (iii) Si pools in soil and beech, chemically as well as by SEM-EDX. For the first time two compartments of biogenic Si in soils were analysed, i.e., phytogenic and zoogenic Si pool (testate amoebae). We quantified an average Si plant uptake of 35 kg Si ha-1 yr-1 - most of which is recycled to the soil by litterfall - and calculated an annual biosilicification from idiosomic testate amoebae of 17 kg Si ha-1. The comparatively high DSi concentrations (6 mg L-1) and DSi exports (12 kg Si ha-1 yr-1) could not be explained by chemical weathering of feldspars or quartz dissolution. Instead, dissolution of a relictic, phytogenic Si pool seems to be the main process for the DSi observed. We identified canopy closure accompanied by a disappearance of grasses as well as the selective extraction of pine trees 30 yr ago as the most probable control for the phenomena observed. From our results we concluded the biogeosystem to be in a transient state in terms of Si cycling.

Sommer, M.; Jochheim, H.; H鰄n, A.; Breuer, J.; Zagorski, Z.; Busse, J.; Barkusky, D.; Meier, K.; Puppe, D.; Wanner, M.; Kaczorek, D.



GEMAS results from the Pannonian Basin - geochemical signatures in a transnational geological structure  

NASA Astrophysics Data System (ADS)

The Pannonian Basin, also referred to as Carpathian Basin, has its geological origins in the Pannonian Sea which was part of the Parathetys Sea, from which it was separated around 10 Ma ago. It spreads over large part of the southeastern part of Central Europe. The centre of the Pannonian Basin is located in Hungary and extends to the adjoining countries Austria, Slovakia, Romania, Ukraine, Croatia, Serbia, Slovenia and Bosnia-Herzegovina. The basin is surrounded by the Carpathian Mountains, the Alps, the Dinarides and the Balkan mountains. The Pannonian Basin is filled by Molasse sediments, which were deposited during the Alpine orogenesis and originating from the rising Alpine and Carpathian Mountain chains. The orogenesis continued during the sedimentation into the Molasse basin. The tectonic movements resulted in several cycles of trans- and regressions of the Parathetys, the sedimentation of marine and freshwater sediments as well as a multitude of fractures and cleavages during the orogensis and the subsidence of different parts of the basin. Even if the Pannonian Basin was formed during a complex orogenesis, it can be regarded as a geo- and hydrodynamic unit. In accordance with the geological history, the soils in the Pannonian Basin developed on loose sediments - including significant loess deposits - and are dominated by soil types which also reflect the continental and steppe climate in this area - Planosols, Luvisols, Cambisols, Calcisols, Chernozems and Phaeozems. The basin is extensively used for agricultural purposes. The geochemical patterns Pannonian Basin are considerably different compared to its surroundings due to its geological development. The spatial distribution of some elements (REE (La, Ce), Y, Th, V, Cd, Pb) are clearly different inside and outside the basin area. For this transnational geological and geographical area, the GEMAS results are compiled and multivariate statistics are applied to find common geochemical signatures in relation to the geological history of the Basin.

Haslinger, Edith; Jordan, Gyozo; Slaninka, Igor; Sorsa, Ajka; Gulan, Aleksandra; Gosar, Mateja; Hratovic, Hazim; Klos, Volodymyr



Assessment of land use in protected areas of the state of Sao Paulo, Brazil  

NASA Astrophysics Data System (ADS)

It is of universal knowledge that the soil, a basic natural resource, is renewable only if conserved or used correctly(Primavesi, 2002). It is salient for Ara鷍o et al. (2007) that the establishment of index of soil quality is an important tool in the functions of control, supervision and monitoring of areas for environmental protection. The objective of this study was to compare the quality of the soil by means of a comparative diagram in different soil uses in permanent preservation areas (APP). The study was conducted in areas near the Ribeira de Iguape river in the city of Registro - S鉶 Paulo - Brazil, belonging to the Atlantic Forest domain, a Haplic Cambisol. The following uses of the soil had been evaluated: a) banana culture (CBAN) without agricultural traffic of machines; b) degraded pasture (PDEG) with extensive system predominantly Brachiaria decumbens L. c) use silvopastoral (MPIs), consisted in a kills with a traffic free for the animals, and d) native vegetation (MNAT), proposed in this study as a reference area.The following physical indicators were analyzed: bulk density (BD), total soil porosity (TP), macroporosity (Ma), microporosity (Mi), water dispersible clay (ADA), flocculation index (FI), preconsolidation pressure (PP), soil shear strength (SS), soil resistance to penetration (RP). To construct the comparative diagram the values for each attribute of the soil in each land use were related to the values of the native forest. It was feasible to use the comparative model in the qualitative evaluation of soil use, allowing separate environments under different uses. According to the comparative diagram of banana culture is the use that most negatively impacts the physical and mechanical soil due to the smaller size of the lower polygon.

Iori, P.; da Silva, R. B.; Dias Junior, M. S.; Paz Gonz醠ez, A.



A long-term field experiment of soil transplantation demonstrating the role of contemporary geographic separation in shaping soil microbial community structure  

PubMed Central

The spatial patterns of microbial communities are largely determined by the combined effects of historical contingencies and contemporary environmental disturbances, but their relative importance remains poorly understood. Empirical biogeographic data currently available are mostly based on the traditional method of observational survey, which typically involves comparing indigenous microbial communities across spatial scales. Here, we report a long-term soil transplantation experiment, whereby the same two soils (red Acrisol and purple Cambisol from Yingtan) were placed into two geographic locations of ?1000爇m apart (i.e., Yingtan in the mid-subtropical region and Fengqiu in warm-temperate region; both located in China). Twenty years after the transplantation, the resulting soil microbial communities were subject to high-throughput 454 pyrosequencing analysis of 16S and 18S rRNA genes. Additionally, bacteria and archaea involved in nitrogen cycling were estimated using clone library analysis of four genes: archaeal amoA, bacterial amoA,nirK, and nifH. Data of subsequent phylogenetic analysis show that bacteria, fungi, and other microbial eukaryotes, as well as the nitrogen cycling genes, are grouped primarily by the factor of geographic location rather than soil type. Moreover, a shift of microbial communities toward those in local soil (i.e., Chao soil in Fengqiu) has been observed. The results thus suggest that the historical effects persistent in the soil microbial communities can be largely erased by contemporary disturbance within a short period of 20爕ears, implicating weak effects of historical contingencies on the structure and composition of microbial communities in the soil. PMID:24772284

Sun, Bo; Wang, Feng; Jiang, Yuji; Li, Yun; Dong, Zhixin; Li, Zhongpei; Zhang, Xue-Xian



Cosmic Ray Neutron Probe Soil Water Measurements over Complex Terrain in Austria  

NASA Astrophysics Data System (ADS)

The importance of surface soil water (rooting zone) has become evident with climate change affecting rainfall patterns and crop production. The use of Cosmic Ray Neutron Probe (CRNP) for measuring surface soil water has become increasingly popular. The advantage of CRNP is that it is a non-invasive technique for measuring soil water content at an area-wide scale, in contrast to more conventional, techniques which measure mainly at field scale (point level). The CRNP integrates over a circular area of ca. 600 meters in diameter, to a depth of 70 cm, giving an average value for soil water content. Cosmic radiation interacting with the Earth's atmosphere continuously generates neutrons. At Earth's surface, these neutrons interact with surface water, and are slowed down. At sub-micrometer geometrics, these neutrons affect semiconductor devices, so they can be counted, slow and fast ones separately. From the difference in numbers between fast and slow neutrons, soil water content is calculated. As first in Austria, a CRNP (CRS 1000/B model) consisting of two neutron counters (one tuned for slow, the other one for fast neutrons), data logger and an Iridium modem, has been installed at Petzenkirchen research station of the Doctoral Programme for Water Resource Systems (TU Vienna) at 48.14 latitude and 15.17 longitude, 100 km west of Vienna, in late autumn 2013. The research station is located in an undulating agricultural landscape, characterized by heavy Cambisols and Planosols, and winter wheat and barley as main crops in winter, and maize and sunflower in summer. In addition, an in-situ soil moisture network consisting of 32 stations of Time Domain Transmissivity (TDT) sensors measuring soil water at 4 depths (0.05, 0.10,0.20 and 0.50 m) over an area of 64 ha has been established. This TDT network is currently being used to validate the use of the innovative CRNP technique. First results will be shown at the EGU 2014.

Vreugdenhil, Mariette; Weltin, Georg; Kheng Heng, Lee; Wahbi, Ammar; Oismueller, Markus; Dercon, Gerd



Spatial variability of the dehydrogenase activity in forest soils  

NASA Astrophysics Data System (ADS)

The aim of this study was to assess the spatial variability of the dehydrogenase activity (DH) in forest soils using geostatistics. We have studied variability soil dehydrogenase and their relationship with variability of some physic-chemical properties. Two study areas (A and B) were set up in southern Poland in the Zlotoryja Forest District. Study areas were covered by different types of vegetation (A- broadleaf forest with beech, ash and sycamore), B- coniferous forest with Norway spruce). The soils were classified as Dystric Cambisols (WRB 2006). The samples for laboratory testing were collected from 49 places on each areas. 15 cm of surface horizon of soil were taken (with previously removed litter). Dehydrogenase activity was marked with Lenhard's method according to the Casida procedure. Soil pH, nitrogen (N) and soil organic carbon (C) content (by LECO CNS 2000 carbon analyzer) was marked. C/N ratio was calculated. Particle size composition was determined using laser diffraction. Statistical analysis were performed using STATISTICA 10 software. Geostatistical analysis and mapping were done by application of GS 9+ (Gamma Design) and Surfer 11 (Golden Software). The activity of DH ranged between 5,02 and 71,20 mg TPP kg-1 24 h-1 on the A area and between 0,94 and 16,47 mg TPP kg-1 24 h-1. Differences in spatial variability of the analised features were noted. The variability of dehydrogenase activity on the A study area was described by an exponential model, whereas on the B study area the spatial correlation has not been noted. The relationship of dehydrogenase activity with the remaining parameters of soil was noted only in the case of A study area. The variability of organic carbon content on the A and B study areas were described by an exponential model. The variability of nitrogen content on both areas were described by an spherical model.

B?o?ska, Ewa; Lasota, Jaros?aw



Stability of amorphous hydrous manganese oxide in contrasting soils and implications for its use in chemical stabilization of metals/metalloids in contaminated soil environments  

NASA Astrophysics Data System (ADS)

Amorphous manganese oxides are known to be efficient sorbents in soils and thus useful in remediation technologies. A novel amorphous hydrous manganese oxide (HMO) was prepared by a modified procedure generally used for birnessite synthesis. Its long-term stability in view of possible applications for chemical stabilization of metals/metalloids in polluted soils was evaluated. HMO was sealed in experimental bags prepared from polyamide fabric (pore size 1 um) and placed in the pots containing 200 g of soil. Three contrasting soils were used (two cambisols with pH values of 4.2 and 5.4, respectively, and a chernozem with a pH of 7.3). Each pot was equipped with a rhizon pore water sampler and the water content was maintained at 80% WHC throughout the experiment. HMO and pore waters were sampled after 1, 7, 15, 30, 45, 60, 75 and 90 days of incubation. Up to 113 mg Mn/L was released into pore water at the beginning of the experiment in more acidic soils indicating a slight dissolution of HMO surfaces. Manganese release into the pore water stabilized after 15 days in agreement with mass loss measurements. Mass loss decreased again after 60 days of the incubation for the neutral soil due to the formation of secondary rhodochrosite (MnCO3) detected on the HMO surfaces by X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). The efficiency of HMO for trace metal retention in soils (e.g., Zn) slightly decreased after 60 days, probably due to the mineralogical transformation of the sorbent leading to decrease of binding surfaces. Nevertheless, only approximately 10% of HMO dissolved after 90 days of experiment showing that this sorbent can be relatively stable in the studied soils. Its binding capacity for metals/metalloids should be further tested in soils with elevated contaminant concentrations.

Ettler, V.; Knytl, V.; Komarek, M.; Della Puppa, L.; Mihaljevic, M.; Sebek, O.



Contents and composition of organic matter in subsurface soils affected by land use and soil mineralogy  

NASA Astrophysics Data System (ADS)

Land use and mineralogy affect the ability of surface as well as subsurface soils to sequester organic carbon and their contribution to mitigate the greenhouse effect. This study aimed to investigate the long-term impact of land use (i.e., arable and forest) and soil mineralogy on contents and composition of soil organic matter (SOM) from subsurface soils. Seven soils different in mineralogy (Albic and Haplic Luvisol, Colluvic and Haplic Regosol, Haplic and Vertic Cambisol, Haplic Stagnosol) were selected within Germany. Soil samples were taken from forest and adjacent arable sites. First, particulate and water soluble organic matter were separated from the subsurface soil samples. From the remaining solid residues the OM(PY) fractions were separated, analyzed for its OC content (OCPY) and characterized by FTIR spectroscopy. For the arable subsurface soils multiple regression analyses indicate significant positive relationships between the soil organic carbon contents and the contents of i) exchangeable Ca and oxalate soluble Fe, and Alox contents. Further for the neutral arable subsurface soils the contents OCPY weighted by its C=O contents were found to be related to the contents of Ca indicating interactions between OM(PY) and Ca cations. For the forest subsurface soils (pH <5) the OCPY contents were positively related with the contents of Na-pyrophosphate soluble Fe and Al. For the acidic forest subsurface soils such findings indicate interactions between OM(PY) and Fe3+ and Al3+ cations. The effects of land use and soil mineralogy on contents and composition of SOM and OM(PY) will be discussed.

Ellerbrock, Ruth H.; Kaiser, Michael



Black locust-Successful invader of a wide range of soil conditions.  


Black locust (Robinia pseudoacacia, BL), a species native to North America, has successfully invaded many types of habitats over the world. This study provides an overall assessment of BL soil conditions to determine the range of physical-chemical soil properties it can tolerate. 511 BL stands (for the soil types) and 33 permanent plots (for the soil chemistry) were studied in the Czech Republic. Relationships among different environmental variables (physical-chemical soil properties, vegetation characteristics and habitat conditions) were investigated and variables with the highest effect on species composition were detected. The results were compared with data in the literature for other parts of the secondary and native distributions of this species. This assessment showed that BL is able to tolerate extremely diverse soil physical-chemical conditions, from extremely acid to strongly alkaline, and from medium to highly base saturated soils with a gradient of different subsurface stoniness. Soil nitrate, N mineralization and nitrification rates also varied considerably and the concentrations of exchangeable phosphorus and ammonium were consistently low. N mineralization rate, incubated inorganic nitrogen and nitrates were positively correlated with base saturation and cation exchange capacity. The most common soil types were young soils (Cambisols, Leptosols, Arenosols, and coarsely textured Fluvisols). BL seems to be limited by water supply and soil aeration and prefers well aerated and drained soils, and tolerates desiccation but avoids compact soils and areas where the soils are frequently waterlogged. On steep slopes, BL was less vigorous, stunted and less competitive. By contrast, the tallest BL trees were found on sandy soils in a flat landscape. Number and share of nitrophytes in the herb layer were positively related to basic bedrock, soil reaction and N-NO3/N ratio. Soil reaction was determined as the most important environmental characteristic explaining the variability in BL species composition in the Czech Republic. PMID:25461033

V韙kov, Michaela; Tonika, Jaroslav; M黮lerov, Jana



Response of soil microbial communities to fire and fire-fighting chemicals.  


Worldwide, fire-fighting chemicals are rapidly gaining acceptance as an effective and efficient tool in wildfires control and in prescribed burns for habitat management. However, despite its widespread use as water additives to control and/or slow the spread of fire, information concerning the impact of these compounds on soil ecosystems is scarce. In the present work we examine, under field conditions, the response of the microbial communities to three different fire-chemicals at normal doses of application. The study was performed with a Humic Cambisol over granite under heath, located in the temperate humid zone (Galicia, NW Spain) with the following treatments: unburned soil (US) and burned soil added with water alone (BS) or mixed with the foaming agent Auxqu韒ica RFC-88 at 1% (BS+Fo), Firesorb at 1.5% (BS+Fi) and FR Cross ammonium polyphosphate at 20% (BS+Ap). The microbial mass (microbial C), activity (?-glucosidase, urease) and community structure [phospholipids fatty acids (PLFA) pattern] were measured on soil samples collected at different sampling times during a 5year period after a prescribed fire. The results showed a negative short-term effect of the fire on the microbial properties. The microbial biomass and activity levels tended to recover with time; however, changes in the microbial community structure (PLFA pattern) were still detected 5years after the prescribed fire. Compared to the burned soil added with water, the ammonium polyphosphate and the Firesorb treatments were the fire-fighting chemicals that showed a higher influence on the microbial communities over the whole study period. Our data indicated the usefulness of the PLFAs analysis to detect the long-term impact of both fire and fire-fighting chemicals on the soil microbial communities and hence on the soil quality of forest ecosystems. PMID:20888616

Barreiro, A; Mart韓, A; Carballas, T; D韆z-Ravi馻, M



Short-term bioavailability of carbon in soil organic matter fractions of different particle sizes and densities in grassland ecosystems.  


The quality, stability and availability of organic carbon (OC) in soil organic matter (SOM) can vary widely between differently managed ecosystems. Several approaches have been developed for isolating SOM fractions to examine their ecological roles, but links between the bioavailability of the OC of size-density fractions and soil microbial communities have not been previously explored. Thus, in the presented laboratory study we investigated the potential bioavailability of OC and the structure of associated microbial communities in different particle-size and density fractions of SOM. For this we used samples from four grassland ecosystems with contrasting management intensity regimes and two soil types: a Haplic Cambisol and a typical Chernozem. A combined size-density fractionation protocol was applied to separate clay-associated SOM fractions (CF1, <1 ?m; CF2, 1-2 ?m) from light SOM fractions (LF1, <1.8 g cm(-3); LF2, 1.8-2.0 g cm(-3)). These fractions were used as carbon sources in a respiration experiment to determine their potential bioavailability. Measured CO2-release was used as an index of substrate accessibility and linked to the soil microbial community structure, as determined by phospholipid fatty acids (PLFA) analysis. Several key factors controlling decomposition processes, and thus the potential bioavailability of OC, were identified: management intensity and the plant community composition of the grasslands (both of which affect the chemical composition and turnover of OC) and specific properties of individual SOM fractions. The PLFA patterns highlighted differences in the composition of microbial communities associated with the examined grasslands, and SOM fractions, providing the first broad insights into their active microbial communities. From observed interactions between abiotic and biotic factors affecting the decomposition of SOM fractions we demonstrate that increasing management intensity could enhance the potential bioavailability of OC, not only in the active and intermediate SOM pools, but also in the passive pool. PMID:25112822

Breulmann, Marc; Masyutenko, Nina Petrovna; Kogut, Boris Maratovich; Schroll, Reiner; D鰎fler, Ulrike; Buscot, Fran鏾is; Schulz, Elke



Effect of cropland management and slope position on soil organic carbon pool at the North Appalachian Experimental Watersheds  

SciTech Connect

Soil organic matter is strongly related to soil type, landscape morphology, and soil and crop management practices. Therefore, long-term (15-36-years) effects of six cropland management systems on soil organic carbon (SOC) pool in 0-30 cm depth were studied for the period of 1939-1999 at the North Appalachian Experimental Watersheds (<3 ha, Dystric Cambisol, Haplic Luvisol, and Haplic Alisol) near Coshocton, OH, USA. Six management treatments were: (1) no tillage continuous corn with NPK (NC); (2) no tillage continuous corn with NPK and manure (NTC-M); (3) no tillage corn?soybean rotation (NTR); (4) chisel tillage corn?soybean rotation (CTR); (5) moldboard tillage with corn?wheat?meadow?meadow rotation with improved practices (MTR-I); (6) moldboard tillage with corn?wheat?meadow?meadow rotation with prevalent practices (MTR-P). The SOC pool ranged from 24.5Mgha?1 in the 32-years moldboard tillage corn (Zea mays L.)?wheat (Triticum aestivum L.)?meadow?meadow rotation with straight row farming and annual application of fertilizer (N:P:K = 5:9:17) of 56?112 kg ha?1 and cattle (Bos taurus) manure of 9Mg ha?1 as the prevalent system (MTR-P) to 65.5Mgha?1 in the 36-years no tillage continuous corn with contour row farming and annual application of 170?225 kgNha?1 and appropriate amounts of P and K, and 6?11Mgha?1 of cattle manure as the improved system (NTC-M).

Hao, Yueli; Lal, Rattan; Owens, Lloyd; Izaurralde, R Cesar C.; Post, W M.; Hothem, Daniel



The Weichselian (W黵mian) Pleniglacial chronology of the Nussloch loess section/Germany revisited. Implications for the matching of pedosedimentary units with Greenland stadial and interstadial periods.  

NASA Astrophysics Data System (ADS)

The loess section of Nussloch in SW-Germany is a key profile for the reconstruction of the terrestrial palaeoenvironment of central Europe for the time of the Weichselian (W黵mian) Pleniglacial (e.g. Antoine et al., 2009). In this period, the earliest modern humans invaded SW-Germany as documented in unique cultural remains from karst caves of the Swabian Jura (e.g. Conard et al., 2009). The Nussloch profile includes a Middle Pleniglacial Cambisol remain (Lohne Soil), which serves as an important loess marker horizon throughout Europe. Greenland interstadial (GIS) 8 was hitherto regarded as the likely period of soil formation for the Lohne Soil and a suite of partly soliflucted Cryosols in the hanging wall is interpreted to represent warm climate excursions of the Upper Pleniglacial period, starting with GIS8 or GIS7 (e.g. Antoine et al., 2001, 2009; Rousseau et al., 2011). However, revaluation of available chronometric data from Nussloch suggests (GIS7 to) GIS5 as the likely period of soil formation for the Lohne Soil. GIS8 is documented by deposits from thermokarst dynamics, stratigraphically several units below the marker soil. Consequences of a revised chronology for correlations of Pleniglacial Cryosols below and above the Lohne Soil with Greenland interstadials are discussed. The implications are important for European loess research as the Nussloch section serves as a reference base throughout Europe. The revised chronology suggests also that the Lohne Soil postdates the immigration of the earliest modern humans in SW-Germany and central Europe. This finding is in contrast to the earlier age-model for the Nussloch site.

Kadereit, A.; Kind, C.-J.; Wagner, G. A.



Characterization of soil organic matter composition at intact preferential flow path surfaces  

NASA Astrophysics Data System (ADS)

In structured soils, the interaction of percolating water and reactive solutes with the soil matrix is mostly restricted to surfaces of preferential flow paths. Surfaces of flow paths that are formed by cracks, decayed root channels or worm burrows are often covered by clay-organic coatings (i.e., cutanes), in which the outermost layer is mainly organic matter (OM). The composition of OM finally controls wettability, sorption, and transfer properties. However, the in-situ local distribution of OM properties along such surfaces is largely unknown to date because experimental techniques to study the relatively thin and vulnerable coatings at intact structure surfaces were not available. The objective of this study was to analyze the local mm-scale distribution and composition of SOM at preferential flow paths. The Fourier transformed infrared spectroscopy in diffuse reflectance mode (DRIFT) was used to determine spectral information of the intact structural surfaces (cracks and biopores). With the DRIFT-mapping technique, potential flow path types, such as earthworm burrows, root channels, and cracks of structured subsoil horizons were analyzed in 1 mm steps along transects of 15 up to 65 mm length. The distribution of OM composition was characterized by evaluating the ratios of the absorption band intensities of the alkyl- (C-H-) and carbonyl (C=O-) functional groups (CH/CO), which represent a measure of the potential wettability of the OM of the surface. Samples of different soil types (Luvisol, Regosol, Stagnosol, Cambisol), of different geological provenance (till, loess, mudstone, limestone), and of different land use (arable, forest) were analyzed. The CH/CO-ratio was generally higher for earthworm burrows and root channels as compared to crack surfaces and the soil matrix. Differences between flow path types could be observed with respect to soil type, parent material, and land use. The local distribution of the OM properties may affect sorption and mass transfer during preferential flow in structured soils.

Leue, M.; Gerke, H. H.; Ellerbrock, R. H.



Extracellular enzyme activities in a tropical mountain rainforest region of southern Ecuador affected by low soil P status and land-use change  

NASA Astrophysics Data System (ADS)

Little is known about the enzymatic response of microorganisms in soils having a low P status and being subjected to global change phenomena, such as forest disturbance and land-use change. Along a land-use sequence (natural forest - young pasture - old pasture - abandoned pasture - shrubland) in the Andes of southern Ecuador mineral topsoils of Cambisols / Umbrisols were investigated. We tested whether the activities of the six hydrolytic enzymes (cellobiohydrolase, ?-glucosidase, N-acetylglucosaminidase, ?-glucosidase, xylanase, acid phosphomonoesterase) were affected by nutrient status and land-use induced alterations in soil pH (pHH2O from 3.7 to 5.2), resource quantity and quality (e.g. a SOC:N:P ratio from 182:13:1 to 1050:38:1) and microbial community structure (as monitored by phospholipid fatty acids). Microbial production of acid phosphatase responded to the low P status of the sites by a higher investment in the acquisition of P compared to C. We determined three major drivers of enzyme activities: 1.) Microbial demand for P regulated the production of acid phosphatase, provided that N and C were available. At the natural forest site the two-fold higher specific activity of acid phosphatase pointed to a high microbial P-demand, whereas the production of acid phosphatase was constrained by the availability of N and DOC after pasture abandonment. 2.) Microbial biomass that was controlled by pH and resource availability (total soil N (organic and inorganic N), organic P (Bray-fraction)) was the main driver for cellobiohydrolase, ?-glucosidase and N-acetylglucosaminidase activities. 3.) Substrate induction due to increased litter inputs of herbaceous plant species seemed to regulate ?-glucosidase and xylanase activities during secondary succession. In contrast, alterations in the abundance of microbial groups affected the variation in extracellular enzyme activities only marginally. At the level of broadly defined microbial groups (PLFA), our results point to functional similarity in the decomposition of simple organic material.

Tischer, Alexander; Blagodatskaya, Evgenia; Ute, Hamer



Bruno Braunerde und die Bodentypen - The German-speaking friends of the Scottish soil characters  

NASA Astrophysics Data System (ADS)

Cartoon figures of soil profiles with faces, legs, arms and funny names: the Scottish soil characters Rusty (Cambisol), Heather (Podzol), Pete (Histosol) and five others were developed at the James Hutton Institute in Aberdeen for outreach activities. They represent eight soil types that are common in Scotland. Recently they have become movie stars in an animated film, where they speak with a Scottish accent. The Scottish soil characters are a true soil science communication success story and it would be great if they had friends in many places to tell some stories from the underground in the respective native languages. This contribution will introduce the draft for 13 German-speaking soil characters that represent the most common soil types in Austria, Germany and Switzerland. Each name is a play on words with respect to German soil classification terms and serves as a mnemonic for typical characteristics of these soils. The 'hair' shows detailed vegetation and the context with common land use. For non-soil scientists the soil characters can be used as story-tellers, e.g. about their life (soil evolution), home (spatial distribution), job (function), fears (threats) and joys (best-practice land use, restoration). Because the International Year of Soil (2015) is an excellent opportunity for new outreach activities, the aim is to publish the German-speaking soil characters as a collaboration of the Austrian, German and Swiss Soil Science Societies. The soil characters could be used in print or online formats, and even - as can be seen in Aberdeen - as human-sized walking soil profiles.

Hofmann, Anett



Weathering and dissolution rates among Pb shot pellets of differing elemental compositions exposed to various aqueous and soil conditions.  


The present study was performed to investigate the weathering and dissolution rates of Pb shot pellets differing in elemental composition (Pb, Sb, and As) exposed under various aqueous and soil conditions using five commercial shot pellet preparations. Upon immersion in distilled water, the dissolution rates of shot pellets, calculated from the difference in weight before versus after immersion, decreased with increasing Sb + As contents and the dominant precipitate was hydrocerussite. These subsidiary ingredients may be related to the difficulty of metallic Pb oxidation (transformation to PbO). Weight losses standardized by the amount of rainfall upon exposure to rainfall on open grassland and under canopies of Japanese cedar (Cryptomeria japonica) and bamboo-leafed oak (Quercus myrsinaefolia) were 1.11, 1.07, and 7.35 mg g pellets(-1) year(-1) L(-1), respectively, and was also related to Sb + As contents in shot pellets. However, annual dissolution rates of Pb standardized by the amount of rainfall as the soluble fraction at the same sites were 0.72, 0.33, and 0.40 mg Pb g pellets(-1) year(-1) L(-1) in the same order. These trends seemed to be related to the rainfall pH, which induces precipitation of Pb dissolved as PbCO(3) under conditions of higher pH at the Q. myrsinaefolia site or organic matter released from leaves, etc., which can form metal complexes. Dissolution rates of shot pellets buried in soils (Cambisol, Fluvisol, Regosol, Andosol) also seemed to be related to the soil pH and dissolved organic matter contents but were about sixfold faster than those with exposure to rainfall. PMID:20039167

Takamatsu, Takejiro; Murata, Tomoyoshi; Koshikawa, Masami K; Watanabe, Mirai



Utilization of W/Mg(NO 3) 2 modifiers for the direct determination of As and Sb in soils, sewage sludge and sediments by solid sampling electrothermal atomic absorption spectrometry  

NASA Astrophysics Data System (ADS)

A simple method has been developed for the determination of arsenic and antimony in environmental samples by solid sampling electrothermal atomic absorption spectrometry, which was validated using certified reference materials of soils (S-VM Soil Eutric Cambisol; S-MS Soil Orthic Luvisols; S-SP Soil Rendzina), sewage sludge (WT-L; WT-M) and sediments (NIES2; GBW07906). The analytical procedure combines solid sampling with utilization of a matrix modifier admixture containing 5 礸 of W and 5 礸 of Mg. The tungsten in the admixture serves to stabilize the solid matrix during atomisation, which results in dramatically reduced non-specific absorption compared with the conventional palladium modifier. Magnesium was efficient in reducing the accumulation of the matrix residue on the platform. An alternative resonance line of 197.2 nm for arsenic and 206.8 nm for Sb was used in order to eliminate the spectral interferences caused by aluminum compounds, and silicon and iron compounds, respectively. Under optimized experimental conditions, the effective in situ analyte/matrix separation was achieved so that the use of aqueous standards for calibration became possible. With the modifier, a 3 SD detection limit of 0.5 礸 g -1 As and 0.1 礸 g -1 Sb and 10 SD quantification limit of 1.7 礸 g -1As and 0.3 礸 g -1 Sb and a characteristic mass of 65 pg As and 53 pg Sb were obtained. For all the matrices under scrutiny, a good agreement with certified values was achieved with RSD values less than 10%.

T鰎鰇, Peter; 巈mberyov, M醨ia



Microbially-mediated transformation and mobilization of soil Fe-organic associations  

NASA Astrophysics Data System (ADS)

Soil organic matter (OM) has been proposed to be stabilized in the long term via sorption to iron((oxy)hydr)oxides under aerobic conditions. However, in an anaerobic environment, Fe-organic associations may be subject to microbial reduction and mobilization, which counteract the suggested stabilizing effect of Fe compounds. Desorption of OM can result in its microbial decomposition causing the emission of greenhouse gases (CO2, CH4, N2O) or release of associated contaminants into the soil solution and groundwater. While the reductive dissolution of pure iron((oxy)hydr)oxides by dissimilatory FeIII reducing bacteria is well established, little is known about the influence of natural OM on microbially mediated mobilization of Fe-organic associations. Therefore, this study aims to elucidate the effect of adsorbed OM on microbial FeIII reduction of Fe-organic associations with regard to (i) the composition of OM, (ii) the carbon loading, and (iii) surface coverage and/or pore blockage by adsorbed OM. Mineral-organic associations with varying carbon contents were synthesized using several iron((oxy)hydr)oxides (Goethite, Lepidocrocite, Ferrihydrite, Hematite, Magnetite) and OM of different origin (dissolved OM extracted from the Oa horizon of a Podzol and Oi horizon of a Cambisol, extracellular polymeric substance extracted from Bacillus subtilis). Incubation experiments under anaerobic conditions were conducted for 16 days using two different strains of dissimilatory FeIII reducing bacteria (Shewanella putrefaciens, Geobacter metallireducens). At five sampling points in time the solution phase was analyzed for pH, Fetotal, and FeII. The initial mineral-organic associations and post-incubation phase were characterized by N2 gas adsorption, FTIR, XRD, and XPS. The results indicate that the composition of OM and carbon loading significantly influence the rate and extend of microbial reduction of Fe-organic associations depending on the type of microbial strain and iron((oxy)hydr)oxide used.

Poggenburg, Christine; Mikutta, Robert; Schippers, Axel; Dohrmann, Reiner; Kaufhold, Stephan; Guggenberger, Georg



Monitoring soil volume wetness in heterogeneous soils by electrical resistivity. A field-based pedotransfer function  

NASA Astrophysics Data System (ADS)

Modern irrigation techniques require accurate, rapid, cost-effective, spatial measurement of soil moisture. Electrical Resistivity Tomography (ERT) meets most of these requirements, but needs to be calibrated for each use because it is very sensitive to differences in soil characteristics. In this study, a pedotransfer function approach is used to remove the need for site-specific calibration, allowing ERT to be used directly to measure soil moisture. The study site was a hillslope vineyard, where eight calcaric-cambisol soil profiles were identified. From 2012 to 2013, 23 000 soil volume wetness measurements were acquired by Time Domain Reflectometry, and over 100 000 electrical resistivity data were collected in 160 ERT acquisitions. To better understand the ERT signal, soil texture, gravel content, cation exchange capacity, CaCO3, pH, organic carbon and total nitrogen were analysed in 64 soil samples from the study site. The sensitivity of ERT to differences in soil characteristics makes it difficult to establish a unique model linking electrical resistivity and soil moisture in heterogeneous soils. This study presents two possible solutions to overcome this problem, which are differentiated by the availability of data on soil characteristics. When these data are not available, it is possible to fit a number of different models for each homogeneous soil layer, but a site-specific calibration is necessary at least once. Conversely, when soil characteristics are available, they can be integrated into the model to build a pedotransfer function. A unique, accurate model is obtained in this way for all samples. In soils with similar characteristics to those observed, the function can be used directly to measure soil moisture by ERT. Developing pedotransfer functions such the one presented here could greatly improve, simplify and develop the use of electrical resistivity to measure soil moisture.

Brillante, Luca; Bois, Benjamin; Mathieu, Olivier; Bichet, Vincent; Michot, Didier; L関阸ue, Jean



Water repellency in an Alpine forest soil and its impact on hydraulic characteristics under simulated climate change  

NASA Astrophysics Data System (ADS)

The climate of Alpine environments is expected to change dramatically as a consequence of global climate change. In this ecologically sensitive environment, prolonged dry periods and an increased occurence of extreme rainfall events is forecasted by many climate change models. On the other hand, soil water repellency (SWR) is known to affect hydraulic processes in soils, particularly in acidic forest soils and as a consequence of prolonged dry periods. By changing the soil surface properties, SWR also changes the hydraulically effective properties of soils. The quantification of the spatial occurence and degree of hydrophobicity is a crucial prerequirement for ecological and hydrological impact assessment and developing new models. Therefore, the objective of the present study was to quantify soil water repellency in an Alpine forest with respect to its spatial variability and affected by different simulated climatic regimes. The study was accomplished in the Rosalian mountains, some 60 km south of Vienna, Austria. The vegetation was a mature beech forest and the soil was a Podsolic Cambisol over weathered granitic rock debris. As parts of the experimental plot were covered by plastic roofs and artificially irrigated, three different treatments were tested: Compared to the natural precipitation (control), the irrigation amount was reduced with two drought degrees (moderate and extreme). Within a small grid, 9 samples were taken per treatment in two depths (surface and 0.10 m). The contact angle was determined with the modified sessile drop method. Additionally, total and organic carbon contents and the hydraulic soil properties were quantified. Infiltration experiments were performed with a tension infiltrometer using water and ethanol. The results showed considerable water repellency with at least subcritical contact angles for all treatments. Contact angles increased to above 90 degree at the moderate and extreme drought treatments. Differences between intrinsic and apparent hydraulic properties as reflected by the ethanol and water infiltration, respectively, increased with increasing drought degree.

Schwen, Andreas; Zimmermann, Michael; Lamparter, Axel; Woche, Susanne; Bachmann, J鰎g



Soil-plant water status and wine quality: the case study of Aglianico wine (the ZOViSA project)  

NASA Astrophysics Data System (ADS)

The terroir analysis, aiming to achieve a better use of environmental features with respect to plant requirement and wine production, needs to be strongly rooted on hydropedology. In fact, the relations between wine quality and soil moisture regime during the cropping season is well established. The ZOViSA Project (Viticultural zoning at farm scale) tests a new physically oriented approach to terroir analysis based on the relations between the soil-plant water status and wine quality. The project is conducted in southern Italy in the farm Quintodecimo of Mirabella Eclano (AV) located in the Campania region, devoted to quality Aglianico red wine production (DOC). The soil spatial distribution of study area (about 3 ha) was recognized by classical soil survey and geophysics scan by EM38DD; then the soil-plant water status was monitored for three years in two experimental plots from two different soils (Cambisol and Calcisol). Daily climate variables (temperature, solar radiation, rainfall, wind), daily soil water variables (through TDR probes and tensiometers), crop development (biometric and physiological parameters), and grape must and wine quality were monitored. The agro-hydrological model SWAP was calibrated and applied in the two experimental plots to estimate soil-plant water status in different crop phenological stages. The effects of crop water status on crop response and wine quality was evaluated in two different pedo-systems, comparing the crop water stress index with both: crop physiological measurements (leaf gas exchange, leaf water potential, chlorophyll content, LAI measurement), grape bunches measurements (berry weight, sugar content, titratable acidity, etc.) and wine quality (aromatic response). Finally a "spatial application" of the model was carried out and different terroirs defined.

Bonfante, Antonello; Manna, Piero; Albrizio, Rossella; Basile, Angelo; Agrillo, Antonietta; De Mascellis, Roberto; Caputo, Pellegrina; Delle Cave, Aniello; Gambuti, Angelita; Giorio, Pasquale; Guida, Gianpiero; Minieri, Luciana; Moio, Luigi; Orefice, Nadia; Terribile, Fabio



XANES spectroscopy as a tool to trace phosphorus transformation during soil genesis and mountain ecosystem development from lake sediments  

NASA Astrophysics Data System (ADS)

The aim of this study is to investigate phosphorus (P) species modifications triggered by soil genesis and mountain ecosystem development after glacial retreat using a lake sediment archive (Lake Anterne, North French Alps). Five lake sediment samples, representative of different stages of soil and ecosystem development, were selected for P speciation analyses. Furthermore, a sequence of current soils from the catchment was analyzed to better constrain our interpretations of the lacustrine archive. Synchrotron techniques (X-ray Fluorescence (XRF) mapping and P K-edge X-ray absorption near edge structure (XANES) spectroscopy) were applied to lake sediments, soils, and standards (mineral and organic) to distinguish between different P species. The results show that soil development during the first millennia of the Holocene triggered increased P species diversity. At the onset of the Holocene, P was present as apatite when rocks and leptosols dominated the catchment. Pedogenic processes then led to apatite dissolution and the formation of large amounts of P on metal/clay-organic complexes. P geochemistry during the main step of soil genesis (early leptosols dominated by apatite, low weathered cambisols with P mainly adsorbed on iron oxides, highly weathered podzols with large amounts of P on Al/Fe/clay organic complexes) is thus clearly recorded in lake sediments. P K-edge XANES spectroscopy is particularly relevant as qualitative method to study P species in soils and lake sediments at high spatial resolution. Such resolution is needed to reveal the diversity of small P particles and like this better characterize the P cycle and improve our understanding of ecosystem evolution.

Giguet-Covex, C.; Poulenard, J.; Chalmin, E.; Arnaud, F.; Rivard, C.; Jenny, J.-P.; Dorioz, J.-M.



Changes in organic matter and residual effect of amendment with two-phase olive-mill waste on degraded agricultural soils.  


Agricultural soils from many parts of the Mediterranean region are very poor in organic matter and are exposed to progressive degradation processes. Therefore, additions of the olive-mill waste from a continuous two-phase system as an organic amendment can improve soil quality and hence mitigate the negative environmental and agronomic limitations of these soils. A field study under semiarid Mediterranean conditions was conducted to evaluate the changes in organic matter after four consecutive annual additions of olive-mill watery husk (OMWH) waste and the de-oiled two-phase olive pomace (TPOP) waste on an olive grove soil: a cutanic Luvisol (CL). Treatments included a control, OMWH (30 and 60 Mg ha(-1), DW equivalent), and TPOP (27 and 54 Mg ha(-1), DW equivalent). Also, a two-year greenhouse study using wheat (Triticum aestivum L.) was conducted to evaluate the residual effects of adding OMWH to CL soil and to a degraded Leptic Cambisol (LC). Treatments included five OMWH rates ranging from 0 to 40 Mg ha(-1). Significant increases in total organic carbon (TOC), water soluble organic carbon (WSOC), humic and fulvic acids, and aggregate stability were observed in the treated plots, and the highest humification index was obtained when OMWH was applied at the lowest rate. The increase in aggregate stability correlated positively and highly significantly (P<0.01) with the humic and fulvic acid and WSOC contents. In the greenhouse, significant increases in TOC, carbohydrates, aggregate stability, total N, available K, and cation exchange capacity were observed in both soils. However, available P decreased significantly. There was an increased residual fertilization effect of OMWH for both soils. The best fits to grain yield and OMWH rates were with a linear regression for the CL soil (R(2)=0.957 and P<0.01), and a quadratic regression for the LC soil (R(2)=0.960 and P<0.01). PMID:17276494

L髉ez-Pi馿iro, Antonio; Murillo, Sergio; Barreto, Carla; Mu駉z, Ana; Rato, Jos M; Albarr醤, Angel; Garc韆, Arturo



Operational tools and applications of EO satellite data to retrieve surface fluxes in semi-arid countries  

NASA Astrophysics Data System (ADS)

The objective of the thesis is to develop and evaluate useful tools and applications of Earth Observation (EO) satellite data to estimate surface fluxes in semi-arid countries. In a first part (Chapter 4), we assess the performance of a new parameterisation scheme of ground heat flux (G) to be used in remote sensing (RS) evapotranspiration (ET) estimation methods. The G-parameterisation optimized with AMMA flux data performs well and improves the sensible heat flux (H) and ET retrieved by means of the triangle method (Jiang & Islam, 2001). In a second part (Chapter 5), the triangle method is compared with ET estimated by means of a land surface model (JULES). An attempt is made to calibrate JULES using the triangle method through Monte Carlo simulations, but the two methods supply rather different results, indicating that further intercomparison tasks should be carried out to assess the performance of RS-based algorithms and land surface models in estimating the components of the land surface energy balance. Chapter 6 presents a set of operational examples for retrieving surface fluxes using RS data. The first example is the study of temporal evolution of ET-maps in Western Africa under monsoonal influence. In a second example, we apply the new scheme proposed in Chapter 4 to retrieve and analyse the long term evolution (2000-2009) of the surface energy balance components, G, H and ET at several sites of the Segura Basin (S-E Spain) using MODIS-Terra data (land surface temperature and NDVI). Temporal and spatial distribution of evapotranspiration reveals different controls on ET. (Chapter 6). In the last example, MODIS-Aqua Sea Surface Temperature (SST) is used to validate a mathematical model to retrieve surface fluxes in a Mediterranean coastal lagoon (Mar Menor, S-E Spain). El objetivo de esta tesis es de desarrollar y evaluar herramientas y aplicaciones de la teledetecci髇 para estimar flujos de superficie en zonas semi醨idas. En una primera parte (Cap韙ulo 4), se eval鷄 la fiabilidad de una nueva parametrizaci髇 para estimar el flujo de calor en el suelo (G) con el fin de ser utilizado en m閠odos de estimaci髇 de la evapotranspiraci髇 (ET) usando datos de teledetecci髇. La parametrizaci髇 de G se optimiza usando datos de flujo de energ韆 obtenido durante las campa馻s del proyecto AMMA, y muestra buenos resultados y una mejora de las estimaciones del flujo de calor sensible (H) y de ET cuando se utiliza conjuntamente con el m閠odo del tri醤gulo (Jiang & Islam, 2001). En una segunda parte (Cap韙ulo 5), el m閠odo del tri醤gulo se compara con valores de ET estimado por un modelo de superficie terrestre (JULES). Se intenta calibrar JULES usando el m閠odo del tri醤gulo mediante simulaciones de Monte Carlo, pero los dos m閠odos muestran resultados muy diferentes, indicando que se necesita tareas de comparaci髇 profundizadas para poder evaluar la eficacia de estos modelos (de superficie terrestre y basados en la teledetecci髇) para estimar los flujos de energ韆 a la superficie. El cap韙ulo 6 presenta un conjunto de ejemplos de aplicaciones operacionales para estimar los flujos de superficie usando datos de teledetecci髇. El primer ejemplo consiste en el estudio de la evoluci髇 temporal de mapas de ET en 羏rica occidental bajo la influencia del monz髇 africano. En el segundo ejemplo, se aplica la nueva parametrizaci髇 de G descrita en el cap韙ulo 4 para calcular y analizar la evoluci髇 a largo plazo (2000-2009) de los componentes del balance de energ韆 a la superficie, G, H y ET, en diferentes puntos de la cuenca del r韔 Segura (Sureste espa駉l) utilizando datos del sensor MODIS-Terra (temperatura superficial y NDVI). La distribuci髇 temporal y espacial de ET revela diferentes controles sobre ET. En el 鷏timo ejemplo, datos de temperatura superficial del mar del sensor MODIS-Aqua se utilizaron para validar un modelo matem醫ico para calcular los flujos superficiales de una laguna costera del Mediterr醤eo (Mar Menor en el Sureste espa駉l).

Tanguy, Maliko


...And That's How It All Began: Putting Information about Your Child's Growth, Health and Safety All within Your Reach...Because the First Years Last Forever! = ...Y asi es como empezo todo: Ponemos a su alcance en forma conjunta la informacion sobre el crecimiento, la salud y la seguridad de su hijo...Porque los primeros anos duran para siempre!  

ERIC Educational Resources Information Center

Smart Start is North Carolina's model early childhood initiative to help all North Carolina children enter school healthy and prepared for success. This resource guide, in Spanish and English versions, is designed to provide parents with information on infant and child development, health care, and resources for further assistance. Presented in an

North Carolina Partnership for Children, Raleigh.


Consejos para los Padres Sobre la Lectura: Informacion e Ideas para Ayudar a los Ninos Desde la Infancia Hasta Octavo Grado a Tener Exito en la Lectura (Tips for Parents about Reading: Information and Ideas for Helping Children through Grade Eight Succeed with Reading).  

ERIC Educational Resources Information Center

Noting that all parents want the best school experience for their children, this booklet, in Spanish, gives parents some ideas about what to expect at different ages and stages of reading development, suggestions for what parents can do at home, and a list of favorite books parents can find in most libraries for parents and children to read.

Davis, Deborah; Lewis, Jan Patricia


Trade Data Discrepancies and the Incentive to Smuggle: An Empirical Analysis (Divergences dans les donn茅es sur les 茅changes commerciaux et attrait de la contrebande: analyse empirique) (Discrepancias de los datos sobre el comercio e incentivo al contrabando: An谩lisis emp铆rico)  

Microsoft Academic Search

Discrepancies in the data of trading partners concerning their trade with each other have frequently been used to infer the significance of illegal trade activities. Trade data discrepancies can, however, have many sources, including the poor quality of data in many countries. If discrepancies in trade data are in large part the result of illegal trade, a causal relationship could

Donogh C. McDonald




Microsoft Academic Search

Wastewater treatment, using upflow anaerobic sludge blanket reactors (UASB), normally achieves 60 - 65% organic matter removal. For removal of the remaining organic matter, nutrients, and pathogens, the UASB effluents require post-treatment. Natural systems, such as duckweed lagoons, due to their capacity to remove nutrients like nitrogen (N) and phosphorous (P), have been reported to present excellent economical alternatives for

Omar Arce Garc韆; Julia Rosa Caicedo


Viviremos! On the Road to Healthy Living: A Bilingual Curriculum on AIDS and HIV Prevention for Migrant Students (Grades 6-12) = El Camino Hacia la Salud: Un Programa de Estudio Bilingue sobre la Prevencion del SIDA y del VIH para Estudiantes Migrantes (Grados 6-12).  

ERIC Educational Resources Information Center

This curriculum provides the basic information everyone needs to avoid HIV infection, but was specifically designed for Latino farmworker students in grades 6-7. The student materials are written in Spanish and English and may be used with older student or young adults, or in English-as-a-second-language courses. An introduction provides

VAMOS (Villarreal Analytical Management and Organizational Services), San Marcos, TX.


Lo que Piensan los Estudiantes y Profesores Sobre la Calidad de la Educacion Superior. Estudio Comparativo en 5 Instituciones de Educacion Superior--dos publicas y tres privadas--en Guadalajara, Jalisco, Mexico (What Students and Faculties Think about the Quality of Higher Education. Comparative Study of 5 Higher Education Institutions--Two Public and Three Private--in Guadalajara, Jalisco, Mexico).  

ERIC Educational Resources Information Center

This study, written in Spanish, compared attitudes of students (N=302) and faculty (N=28) at five institutions of higher education (two public and three private) in Guadalajara, Jalisco, Mexico. The study explored first, whether respondents believed there are significant quality differences between private and public universities and, second, what

Yanez, Maria Lorena Hernandez


Patr髇 de alimentaci髇 de mosquitos (Diptera:Culicidae) transmisores del virus del Oeste del Nilo, recolectados sobre caballos y humanos en el norte de M閤ico Feeding pattern of mosquitoes (Diptera:Culicidae) transmitters of the West Nile virus collected from horses and humans in northern Mexico  

Microsoft Academic Search

The nightly feeding pattern of mosquitoes, associated to viral transmission dynamics in domestic and wild animals in northern Mexico is still unknown. The aim of this study was to determine such pattern using lured traps with horse and humans in an agri- cultural farm located in the metropolitan area of Monterrey, Nuevo Leon, Mexico. In this area equines and several

Filiberto Reyes-Villanueva; Ludivina Barrientos-Lozano; Mario A. Rodr韌uez-P閞ez


Tabla de Especificaciones e Instructivo sobre Elaboracion de Pruebas Objetivas en la Ensenanza Primaria, para las asignaturas de Estudios Sociales, Idioma Espanol, Matematicas y Ciencias Naturales (Specification Tables and Instructions for the Construction of Objective Tests in the Primary Grades in Social Studies, Spanish, Mathematics, and Natural Sciences).  

ERIC Educational Resources Information Center

This booklet presents specification tables illustrating the relative importance given to topics on tests within a particular subject area. The general subject areas are social studies, Spanish, mathematics, and natural sciences. Tables are provided for final exams in each of these areas for several primary grades, illustrating the importance of

Ministerio de Educacion, Guatemala City (Guatemala). Direccion de Bienestar Estudiantil y Educacion Especial.


Efectos Especiales de Anclaje (Estudio sobre Regresiones de Juicios Condicionales). Parte 2: Invariancia del Juicio No-Condicional Como Valor Estandar Para el Juicio Condicional (Special Effects of Anchoring (Study of Regression of Conditional Judgements) Part 2: Invariance of Unconditional Judgments as Standard Value for the Conditional Judgment). Publication No. 31.  

ERIC Educational Resources Information Center

From the best-fit lines corresponding to sets of families of conditional judgements, the constant stimulus family and the constant condition family, both defined for a same scale object, the coordinate values of the point of intersection of both lines (indifference point) are obtained. These values are studied in relation to the mean values of the

Lopez Alonso, A. O.


Efectos Especiales de Anclaje (Estudio sobre Regresiones de Juicios Condicionales). Parte 1: Distincion entre Efectos Aditivos y Efectos Multiplicativos en el Fenomeno de Anclaje (Special Effects of Anchoring (Study on Regression of Conditional Judgements) Part 1: Distinction Between Additive Effects and Multiplicative Effects in the Phenomenon of Anchoring). Publication No. 17.  

ERIC Educational Resources Information Center

A linear relationship was found between judgements given by 160 subjects to 7 objects presented as single stimuli (alpha judgements) and judgements given to the same objects presented with a condition (gamma judgements). This relationship holds for alpha judgements and the gamma judgements that belong to a family of constant stimulus and varying

Lopez Alonso, A. O.



Microsoft Academic Search

Skin pigmentation is the consequence of melanin production and dispersion, this pigment is formed by a successive oxidation of L-Tyrosine into L-Dihydroxyphenylalanine (L-DOPA) and dopaquinone by Tyrosinase enzyme. Skin pigmentation irregularities become an aesthetic problem for many people. Therefore there is a big interest in research on products with skin lightening properties. In order to find inhibitors of Tyrosinase enzyme

Katalina MU袿Z; Karent E. BRAVO


Ensaio hist髍ico-conceitual sobre a Aten玢o Prim醨ia Sa鷇e: desafi os para a organiza玢o de servi鏾s b醩icos e da Estrat間ia Sa鷇e da Fam韑ia em centros urbanos no Brasil A historical and conceptual model for Primary Health Care: challenges for the organization of primary care and the Family Health Strategy in large Brazilian cities  

Microsoft Academic Search

This paper focuses on the experience with Prima- ry Health Care as a strategy for reorganizing the health care model, based on reforms in this direc- tion and their implementation in the Brazilian case. The article identifies a shift in the discourse concerning health sector reforms, with a return to emphasis on primary care and integration of services. The Brazilian

Eleonor Minho Conill


Una Guia para Los Padres sobre La Educacion Especial: El Derecho de Su Hijo(a) a Adquirir una Educacion en el Estado de Nueva York (A Parent's Guide to Special Education: Your Child's Right to an Education in New York State).  

ERIC Educational Resources Information Center

This guide provides information to help parents of special needs children in New York become active partners in the planning and implementation of special education programs. The first part of the guide provides in-depth information related to the special education process in New York State public schools. A historical view of children's rights to

New York State Education Dept. Albany. Office for the Education of Children with Handicapping Conditions.


Lo Que los Padres Necesitan Saber sobre...Reconocer y Animar los Intereses, las Capacidades, y los Talentos de los Adolescentes. Guia Practica B0214 (What Parents Need To Know about...Recognizing Interests, Strengths, and Talents of Gifted Adolescents. Practitioners' Guide B0214).  

ERIC Educational Resources Information Center

This brochure, written in Spanish, for Spanish-speaking parents of gifted adolescents discusses strategies to use to support the interests of their children and how to recognize and extend their children's talents. Parents are urged to: (1) increase their knowledge about the child's areas of interest; (2) discuss the child's present and future

Delcourt, Marcia A. B.


What Providers Should Know about Child Care Assistance for Families: A Targeted Effort to Reach Hispanic Families and Providers = Lo que Deben Saber los Proveedores Sobre el Programa de Ayuda de Cuidado Infantil para las Familias: Un Esfuerzo Especial para Alcanzar Familias y Proveedores Hispanos  

ERIC Educational Resources Information Center

Federal and State governments can help families pay for child care. The families one serves may be eligible for this assistance, and one may receive this funding for services one provides, thus becoming a "participating provider." This paper provides answers to the following questions: (1) How can parents receive child care assistance?; (2) How do

Child Care Bureau, 2004



Lo Que los Padres Necesitan Saber sobre...Reconocer y Animar los Intereses, las Capacidades, y los Talentos de los Ninos Dotados Jovenes. Guia Practica B0212 (What Parents Need To Know about...Recognizing and Encouraging Interests, Strengths, and Talents of Young Gifted Children. Practitioners' Guide B0212).  

ERIC Educational Resources Information Center

This pamphlet, written in Spanish, is designed to help Spanish-speaking parents recognize and encourage their gifted preschool children. It begins by discussing some of the interests of very young children and lists strategies for facilitating and supporting those interests, including: provide the child with opportunities to find out about a

Delcourt, Marcia A. B.


Lo que los Padres Necesitan Saber sobre...Reconocer y Animar los Intereses, las Capacidades, y los Talentos de los Ninos Dotados de la Escuela Primaria. Guia Practica B0213 (What Parents Need To Know about...Recognizing and Encouraging Interests, Strengths, and Talents of Gifted Elementary School Children. Practitioners' Guide B0213).  

ERIC Educational Resources Information Center

This brochure, written in Spanish, discusses strategies that Spanish-speaking parents can use to support the interests of their children and how to recognize and extend their children's talents. Parents are urged to: (1) be aware of what their child likes to do and be patient with the changing patterns as the child explores areas of interests and

Delcourt, Marcia A. B.


Observaci髇 preliminar: Efectos de la suplementaci髇 dietaria con levadura de cerveza (Saccharomyces uvarum) sobre el estallido respiratorio de neutr骹ilos en equinos criollos en entrenamiento Preliminary observation: Effects of dietary supplementation with brewer's yeast (Saccharomyces uvarum) on the respiratory burst of neutrophils in creole horses in training  

Microsoft Academic Search

This study was undertaken to examine the effect of dietary supplementation with brewer's yeast (Saccharo- myces uvarum) over the respiratory burst of peripheral blood leukocytes of Creole horses in training. The control group received a daily ration including 3 kg of oat grain and 4.5 kg alfalfa hay. The treatment group received the same ration supplemented with 0.35 kg brewer's

Sergio Paz; Ariel G. Pellegrini; Mar韆 Cecilia Fornari; Santiago J. Tapia; Roberto A. Diez



Lo que los educadores necesitan saber sobre...El agrupamiento por habilidad [y] La compactacion del curriculum [y] Los alumnos dotados y el aprendizaje cooperativo [y] La actividad tutoral. Guias practica (What Educators Need To Know about...Ability Grouping [and] Curriculum Compacting [and] Gifted Students and Cooperative Learning [and] Mentoring. Practitioners' Guides).  

ERIC Educational Resources Information Center

These four pamphlets in Spanish offer guidelines supported by theory-driven quality research that is problem-based, practice-relevant, and consumer-oriented. Each pamphlet has a section summarizing research from the literature or topic notes as well as implications for the classroom. The first guide offers principles for teachers concerning the

Siegle, Del, Ed.


Understanding Interaction Effects of Climate Change and Fire Management on Bird Distributions through Combined Process and Habitat Models [Comprensi??n de los Efectos de la Interacci??n del Cambio Clim??tico y el Manejo de Fuego sobre la Distribuci??n de Aves Mediante Modelos Combinados de Procesos y H??bitat  

USGS Publications Warehouse

Avian conservation efforts must account for changes in vegetation composition and structure associated with climate change. We modeled vegetation change and the probability of occurrence of birds to project changes in winter bird distributions associated with climate change and fire management in the northern Chihuahuan Desert (southwestern U.S.A.). We simulated vegetation change in a process-based model (Landscape and Fire Simulator) in which anticipated climate change was associated with doubling of current atmospheric carbon dioxide over the next 50 years. We estimated the relative probability of bird occurrence on the basis of statistical models derived from field observations of birds and data on vegetation type, topography, and roads. We selected 3 focal species, Scaled Quail (Callipepla squamata), Loggerhead Shrike (Lanius ludovicianus), and Rock Wren (Salpinctes obsoletus), that had a range of probabilities of occurrence for our study area. Our simulations projected increases in relative probability of bird occurrence in shrubland and decreases in grassland and Yucca spp. and ocotillo (Fouquieria splendens) vegetation. Generally, the relative probability of occurrence of all 3 species was highest in shrubland because leaf-area index values were lower in shrubland. This high probability of occurrence likely is related to the species' use of open vegetation for foraging. Fire suppression had little effect on projected vegetation composition because as climate changed there was less fuel and burned area. Our results show that if future water limits on plant type are considered, models that incorporate spatial data may suggest how and where different species of birds may respond to vegetation changes. ??2011 Society for Conservation Biology.

White, J.D.; Gutzwiller, K.J.; Barrow, W.C.; Johnson-Randall, L.; Zygo, L.; Swint, P.



SUPERFICIES Estos apuntes corresponden a un seminario impartido en el Departamento  

E-print Network

;\\V ) j #11; 2 A; U#11; \\V 6= ;g es un atlas holomorfo sobre V . Como en el caso diferenciable#19;on. Llamaremos atlas holomorfo sobre X a una colecci#19;on A := f(U#11; ; '#11; )g #11;2A que veri.3 Ejemplos. f(C ; 1 C )g es un atlas holomorfo sobre C . Si A := f(U#11; ; '#11; )g #11;2A es un atlas

Artal Bartolo, Enrique


Recorr阯cias - problemas e aplica珲es.  

E-print Network

??Disserta玢o (mestrado)桿niversidade de Bras韑ia, Instituto de Ci阯cias Exatas, Departamento de Matem醫ica, 2014 O objetivo deste texto realizar um estudo sobre sequ阯cias num閞icas mostrando exemplos (more)

Pereira, Marcus Vin韈ius



Migra珲es ascendentes de peixes neotropicais e hidrel閠ricas: prote玢o a jusante de turbinas e vertedouros e sistemas de transposi玢o.  

E-print Network

??Este trabalho se prop鮡 a examinar aspectos de engenharia, particularmente da engenharia hidr醬lica, referentes aos impactos dos aproveitamentos hidrel閠ricos sobre deslocamentos migrat髍ios ascendentes de peixes, (more)

Ricardo Ahouagi Carneiro Junho



An醠ise fotoel醩tica de tens鮡s transmitidas a implantes curtos.  

E-print Network

??O objetivo desse trabalho foi avaliar, pelo m閠odo fotoel醩tico, de que maneira cargas aplicadas sobre pr髏eses metalocer鈓icas implantossuportadas eram transmitidas a implantes de diferentes comprimentos, (more)

Janisse Martinelli Borges de Oliveira



Dietary proanthocyanidins: their effectiveness in dyslipidemic nutritional models and the role of liver and intestine in their hypotriglyceridemic action.  

E-print Network

??Las proantocianidinas ejercen efectos beneficiosos sobre algunos desordenes metab髄icos que se consideran factores de riesgo de las enfermedades cardiovasculares. La desregulaci髇 del metabolismo lipoproteico juega (more)

Quesada V醶quez, Helena



Fadiga no doente com c鈔cer colo-retal: fatores de risco e preditivos.  

E-print Network

??INTRODU敲O: N鉶 existem estudos preditivos sobre fadiga em doentes com c鈔cer colo-retal, embora fadiga seja descrita como freq黣nte na popula玢o oncol骻ica. OBJETIVO: Identificar os fatores (more)

Dalete Delalibera Corr阛 de Faria Mota



Los NIH anuncian el lanzamiento de 3 estudios integrados de medicina de precisi髇; ALCHEMIST es para pacientes con ciertos tipos de c醤cer de pulm髇 en estadio inicial

Los 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, conocidos con el nombre de ALCHEMIST, identificar醤 a pacientes con c醤cer de pulm髇 en estadio inicial cuyos tumores albergan ciertos cambios gen閠icos, y evaluar醤 si los tratamientos con medicamentos que act鷄n sobre esos cambios pueden mejorar la supervivencia.



Microsoft Academic Search

La presencia de cationes de metales pesados en el agua crea problemas serios por sus efectos t髕icos sobre animales, plantas y sobre la salud humana. Como existe una gran variedad de procesos industriales que generan este tipo de contaminaci髇, el control de la presencia de metales pesados en agua es dif韈il. Se ha usado, para algunos de ellos, t閏nicas de

Ren醤 Arriagada; Rafael Garc韆; Ruby Cid


Atributos b醩icos del modelo cubano de Gestion Tributaria Moderna y el desempe駉 del Administrador Tributario en Cuba  

Microsoft Academic Search

El trabajo que se presenta constituye el resumen de una investigaci髇 sobre la pol韙ica fiscal en Cuba para fomentar una cultura tributaria, sustentada en el conocimiento econ髆ico sobre las actuales tendencias y atributos b醩icos de las administraciones tributarias de avanzada lo que es importante como punto de referencia para evaluar el estado de desarrollo de la pol韙ica fiscal cubana e

Damaris de la Caridad Garc韆 Mili醤



Calidad de Servicio Percibida en Servicios de Voz y Video Pedro Casas Hernandez  

E-print Network

Calidad de Servicio Percibida en Servicios de Voz y Video sobre IP Pedro Casas Hern麓andez Diego tests subjetivos: federiquitin, nachopi, echi, edu, gonzuki, ale pini, nico, fabi, ale, merilyn, pipi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2. Servicios de Tiempo Real sobre IP 12 2.1. QoS - Calidad de Servicio



Microsoft Academic Search

Este documento estudia el impacto del sector bancario sobre variables sociales en Colombia, y busca identificar c髆o la diferencia en el desarrollo de las instituciones bancarias a nivel municipal influye sobre la prosperidad econ髆ica y social de hogares de bajos recursos y de las empresas en esas localidades. El estudio busca identificar emp韗icamente c髆o la bancarizaci髇 o el acceso a

Juan Carlos Echeverry Garz髇; 羘gela Mar韆 Fonseca Galvis



An醠isis de Equidad en la Asignaci髇 del Gasto Educativo en Bolivia  

Microsoft Academic Search

Las reformas educativas de los noventas cambiaron los mecanismos de asignaci髇 del gasto educativo en Am閞ica Latina. Sin embargo, estas reformas no fueron seguidas por estudios que examinen los resultados sobre equidad. La ausencia de an醠isis sobre equidad en el financiamiento educativo est obstaculizando el dise駉 de pol韙icas p鷅licas que permitan mejorar la asignaci髇 de estos recursos. En el caso

Osvaldo Nina; Oscar Molina; Paola Barrientos; Paloma Aguilar



Las ayudas de la Uni髇 Europea a las regiones espa駉las en el per韔do 1994-1999 : perspectivas y marcos financieros  

Microsoft Academic Search

Se abordan los aspectos te髍icos m醩 relevantes sobre la intervenci髇 p鷅lica en la educaci髇, destacando especialmente la consecuci髇 de fines redistributivos. Se revisan los distintos enfoques te髍icos sobre la incidencia del gasto p鷅lico y se analizan los resultados m醩 relevantes que se han obtenido de la evidencia emp韗ica disponible, tanto en el an醠isis comparado, como en el caso espa駉l.

Jos Antonio Nieto Sol韘; Alfonso Utrilla de la Hoz



Determinantes de la calidad de la educaci髇 en Colombia  

Microsoft Academic Search

Este trabajo estudia los determinantes de la calidad de la educaci髇 secundaria en Colombia con base en las pruebas del ICFES. El trabajo tiene tres cap韙ulos que abordan tres aspectos cruciales del tema; a saber, el efecto de las caracter韘ticas familiares sobre el rendimiento, el efecto de las caracter韘ticas del plantel sobre la calidad, y el efecto del gasto publico

Alejandro GAVIRIA



El gasto p鷅lico social frente a la infancia: an醠isis del Programa JUNTOS y de la oferta y demanda de servicios asociados a sus condiciones  

Microsoft Academic Search

El presente estudio busca contribuir con la literatura sobre los programas de Transferencia Condicionada de Dinero (conocidos como Condicional Cash Transfer, CCT por sus siglas en ingl閟) y del programa JUNTOS en particular, realizando una investigaci髇 sobre cambios en el estado de oferta y demanda asociadas a las condiciones del programa. Ello se realiza desde la perspectiva de los principales

Lorena Alc醶ar



La inversi髇 p鷅lica nacional en la regiones de Colombia, 1995-2007  

Microsoft Academic Search

Como parte de un trabajo m醩 extenso sobre el gasto p鷅lico nacional en la regi髇 Caribe y el ordenamiento territorial en el per韔do 1995-20071, en este documento se analizan las asignaciones del presupuesto general de la naci髇 para la inversi髇 regionalizable, entre los a駉s 1995-2007 en Colombia. Se presentan algunas explicaciones sobre la relaci髇 entre el producto interno bruto (PIB)

M. A. Jos Moreno; Jos L. Ramos R; Alexandra Garc韆 I



Salario nominal y salario social  

Microsoft Academic Search

Resumen: En este trabajo se intenta llamar la atenci髇 sobre el peso que cada vez m醩 tiene el Salario Social sobre los salarios obtenidos en n髆ina, fruto de la negociaci髇 colectiva. El Salario Social ser韆 el conjunto de prestaciones diferidas, gratuitas o subvencionadas, que ofrece el Estado de Bienestar en los pa韘es desarrollados -y que lo son en gran medida

Antonio Mora Plaza



La incidencia redistributiva del gasto p鷅lico en educaci髇 : una visi髇 emp韗ica al caso espa駉l  

Microsoft Academic Search

Se abordan los aspectos te髍icos m醩 relevantes sobre la intervenci髇 p鷅lica en la educaci髇, destacando especialmente la consecuci髇 de fines redistributivos. Se revisan los distintos enfoques te髍icos sobre la incidencia del gasto p鷅lico y se analizan los resultados m醩 relevantes que se han obtenido de la evidencia emp韗ica disponible, tanto en el an醠isis comparado, como en el caso espa駉l.

Carmen P閞ez Esparrels; Alfonso Utrilla de la Hoz




Microsoft Academic Search

A partir de uma an醠ise cr韙ica do livro de Jeronimo Bouza Vila, El hombre como problema, Filosofia, ciencia y subversi髇 en la antropolog韆 del siglo XIX,discute-se aqui sobre um conjunto de quest鮡s acerca da historia das ci阯cias sociais no s閏ulo XIX e, em particular, sobre a institucionaliza玢o das disciplinas e dos limites estabelecidos entre elas.

Marcos Bernardino de Carvalho



Nuestro Instituto

Informaci髇 acerca de nuestra misi髇 como Instituto Nacional del C醤cer, as como sobre los diferentes tipos de investigaci髇 que apoya nuestro Instituto, el programa de centros oncol骻icos, y sobre el Informe Anual a la Naci髇 acerca del c醤cer, el cual es preparado por las principales organizaciones oncol骻icas de los Estados Unidos.


Sistemas Inteligentes iv Sumario  

E-print Network

Sistemas Inteligentes #12;iv Sum麓ario 2.9 Perspectivas Futuras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4 Conceitos sobre Aprendizado de M麓aquina 39 4.1 Introdu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 #12;Cap麓itulo 4 Conceitos sobre Aprendizado de M麓aquina Maria Carolina Monard Jos麓e Augusto

Baranauskas, Jos茅 Augusto



Microsoft Academic Search

La violencia contra la pareja, especialmente la ejercida por el hombre sobre la mujer, es una de las formas m醩 graves de violencia interpersonal, presenta una elevada prevalencia y numerosos interrogantes sobre su g閚esis, desarrollo y control. En la actualidad es una preocupaci髇 social que demanda una importante inversi髇 en medidas socio-sanitarias para combatir sus efectos en las v韈- timas

A. Andr閟 Pueyo; S. L髉ez; E. 羖varez