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1

Plantas crucíferas y la prevención del cáncer  

Cancer.gov

Hoja informativa que resume los resultados de estudios sobre las plantas crucíferas y el cáncer. Incluye una lista de plantas crucíferas y las guías alimenticias recomendadas para el consumo de verduras.

2

PSC 424: Kingdom Plantae  

NSDL National Science Digital Library

A 12th grade lesson on the characteristics of Kingdom Plantae, photosynthesis and cellular respiration Kingdom Plantae Plantae Unit PowerPoint Use these fun songs to review plant processes! Cell Respiration - Cellular Respiration Song Photosynthesis Rap

Webb, Mrs.

2011-10-12

3

Captulo 1 Redes complejas de interacciones mutualistas planta-animal 17  

E-print Network

plantas. Además, gran número de especies animales dependen estrechamente de los recursos que las plantas animales para su reproducción exitosa ( Jordano 2000). Por lo tanto, estas interacciones sustentan la biodiversi- dad terrestre (Thompson 2006). Cuando analizamos las interacciones de animales y plantas en una

Jordano, Pedro

4

Cambios potenciales en los usos recreativos de la costa del río Uruguay ante la instalación de la planta de celulosa Fray Bentos: un ejercicio de valoración contingente  

Microsoft Academic Search

Se presenta una valuación del impacto que podría producir la planta de celulosa de Fray Bentos sobre el turismo recreativo en el río Uruguay por cambios en el paisaje y en la calidad de las aguas. Los datos provienen de una encuesta realizada en diciembre 2006 y la metodología es de valoración de comportamiento contingente. Surge del trabajo que los

Mariana Conte Grand; Martina Chidiak

2010-01-01

5

INTERACCIONES ENTRE FÁRMACOS, PLANTAS MEDICINALES Y FITOFÁRMACOS  

Microsoft Academic Search

Introducción. Se consideran interacciones farmacológicas (IFs) a las modificaciones farmacocinéticas y\\/o farmacodinámicas que pueden ocurrir con un determinado fármaco cuando se administra de manera simultánea o sucesiva a otro fármaco, alimento, planta medicinal o fitofármaco. En toda interacción hay un fármaco cuya acción se modifica y otro, u otros fármacos, que desencadenan la interacción. Ex isten IFs que optimizan los

6

Short communication Phylogeny of Calvin cycle enzymes supports Plantae monophyly  

E-print Network

enzymes involved in glycolysis and gluceoneogenesis that catalyze reactions similar to those in the CCShort communication Phylogeny of Calvin cycle enzymes supports Plantae monophyly Adrian Reyes), takes place in the plastid stroma. The eukaryotic CC involves 11 different enzymes (Table 1

Bhattacharya, Debashish

7

In planta passive sampling devices for assessing subsurface chlorinated solvents.  

PubMed

Contaminant concentrations in trees have been used to delineate groundwater contaminant plumes (i.e., phytoscreening); however, variability in tree composition hinders accurate measurement of contaminant concentrations in planta, particularly for long-term monitoring. This study investigated in planta passive sampling devices (PSDs), termed solid phase samplers (SPSs) to be used as a surrogate tree core. Characteristics studied for five materials included material-air partitioning coefficients (Kma) for chlorinated solvents, sampler equilibration time and field suitability. The materials investigated were polydimethylsiloxane (PDMS), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyoxymethylene (POM) and plasticized polyvinyl chloride (PVC). Both PDMS and LLDPE samplers demonstrated high partitioning coefficients and diffusivities and were further tested in greenhouse experiments and field trials. While most of the materials could be used for passive sampling, the PDMS SPSs performed best as an in planta sampler. Such a sampler was able to accurately measure trichloroethylene (TCE) and tetrachloroethylene (PCE) concentrations while simultaneously incorporating simple operation and minimal impact to the surrounding property and environment. PMID:24268175

Shetty, Mikhil K; Limmer, Matt A; Waltermire, Kendra; Morrison, Glenn C; Burken, Joel G

2014-06-01

8

ESTUDO DE EXTRATOS DE PLANTAS MEDICINAIS NO DESENVOLVIMENTO DO TUMOR ASCÍTICO DE EHRLICH.  

E-print Network

??Neste trabalho, foi analisada a ação de sete plantas medicinais: Allamanda schottii, Aleurites moluccana, Bauhinia microstachya, Bromelia antiacantha, Calophyllum brasiliense, Ipomoea pes-caprea e Rubus rosaefolius… (more)

Juliane Seleme Brehmer

2005-01-01

9

DISTRIBUCIÓN DE PLOMO EN SUELOS CONTAMINADOS EN EL ENTORNO DE UNA PLANTA DE RECICLAJE DE BATERÍAS ÁCIDAS  

Microsoft Academic Search

Total Pb, Cd, Cu, Ni and Zn concentrations and the distribution of lead in soils from a farmland near a battery recycling plant in Madrid (Spain) were investigated to establish a possible relationship with a recent episode of horses death that presented lead intoxication symptoms before dying. Total Pb and Cd levels presented a clear decrease with distance to the

Victoria CALA; Yukihiko KUNIMINE

10

THE EUROPEAN COOPERATIVE PROGRAMME FOR PLANT GENETIC RESOURCES (ECPGR) AND PLANTA EUROPA: AN OPPORTUNITY FOR SYNERGIES  

Microsoft Academic Search

The European Plant Conservation Strategy (EPCS) was developed by the Planta Europa Network in 2001 with the objective to provide a coherent framework for a range of plant conservation stakeholders from different organisations and countries in Europe to work together (Planta Europa, 2007). The Plant Genetic Resources for Food and Agriculture (PGRFA) community, working for the conservation and use of

Lorenzo Maggioni; Nigel Maxted; Jan Engels

11

Una obra uruguaya en Madrid  

E-print Network

SPRING 1986 103 Una obra uruguaya en Madrid Entre el 12 y el 15 de septiembre se ofrecieron al publico madrileño en el Centro Cultural de la Villa seis representaciones de Retrato de señora, con espejo (Vida y pasión de Margarita Xirgu). Este... sido una de las alumnas predilectas de Margarita Xirgu. Esta obra, previamente montada con éxito en Montevideo, Buenos Aires, Asunción y Barcelona, en Madrid ha sido un verdadero fracaso de taquilla, probablemente en gran medida porque ha coincidido...

Blaylock, Curtis

1986-04-01

12

Planta (2007) 226:9891005 DOI 10.1007/s00425-007-0545-8  

E-print Network

sacs accumulate sugars and organic acid and therefore are the ultimate sink part of the fruit. Fruit) of the fruit. The TSS, together with the total fruit acidity are key fruit quality determinants and determinePlanta (2007) 226:989­1005 DOI 10.1007/s00425-007-0545-8 123 ORIGINAL ARTICLE The citrus fruit

Blumwald, Eduardo

13

Assessment of fluorescein-based fluorescent dyes for tracing Neotyphodium endophytes in planta.  

PubMed

Fluorescent dyes were assessed for their ability to stain viable hyphae of the fungi Neotyphodium lolii and N. coenophialum, symbiotic endophytes of the Pooideae grasses Lolium perenne and Festuca arundinacea, respectively. The fluorescein-based fluorophores; fluorescein diacetate (FDA), 5(6)-carboxy-fluorescein diacetate (CFDA), 5-chloromethylfluorescein diacetate (CMFDA) and the chitin-binding stain, Calcofluor while M2R, were assessed for staining of endophyte hyphae in vitro from axenic fungal cultures and in planta, including epidermal leaf sheath peels, nodes, ovaries, embryos and meristems. CMFDA produced the greatest intensity of staining of fungal hyphae and gave excellent contrast in planta compared to the plant cells. Compared to the other dyes, CMFDA was also the least affected by photo bleaching and continued to fluoresce up to 2 h after initial excitation. None of the fluorescent dyes stained fungal hyphae in seed. PMID:22802389

Card, Stuart D; Tapper, Brian A; Lloyd-West, Catherine; Wright, Kathryn M

2013-01-01

14

Real-time PCR for the quantification of fungi in planta.  

PubMed

Methods enabling quantification of fungi in planta can be useful for a variety of applications. In combination with information on plant disease severity, indirect quantification of fungi in planta offers an additional tool in the screening of plants that are resistant to fungal diseases. In this chapter, a method is described for the quantification of DNA from a fungus in plant leaves using real-time PCR (qPCR). Although the method described entails quantification of the fungus Verticillium dahliae in lettuce leaves, the methodology described would be useful for other pathosystems as well. The method utilizes primers that are specific for amplification of a ?-tubulin sequence from V. dahliae and a lettuce actin gene sequence as a reference for normalization. This approach enabled quantification of V. dahliae in the amount of 2.5 fg/ng of lettuce leaf DNA at 21 days following plant inoculation. PMID:22183651

Klosterman, Steven J

2012-01-01

15

POSGRADO EN GESTIN Y OPERACIN DE PLANTAS DE TRATAMIENTO DE AGUAS  

E-print Network

EEES 2012/13 POSGRADO EN GESTI�N Y OPERACI�N DE PLANTAS DE TRATAMIENTO DE AGUAS #12;Joaquim Olivé agua con más de 140 años de experiencia. Agbar es un referente a nivel nacional e internacional con expertise de Agbar, ofreciendo a las empresas del agua y del medio ambiente soluciones y tecnologías basadas

Politècnica de Catalunya, Universitat

16

Screening for in planta protein-protein interactions combining bimolecular fluorescence complementation with flow cytometry  

PubMed Central

Understanding protein and gene function requires identifying interaction partners using biochemical, molecular or genetic tools. In plants, searching for novel protein-protein interactions is limited to protein purification assays, heterologous in vivo systems such as the yeast-two-hybrid or mutant screens. Ideally one would be able to search for novel protein partners in living plant cells. We demonstrate that it is possible to screen for novel protein-protein interactions from a random library in protoplasted Arabidopsis plant cells and recover some of the interacting partners. Our screen is based on capturing the bi-molecular complementation of mYFP between an YN-bait fusion partner and a completely random prey YC-cDNA library with FACS. The candidate interactions were confirmed using in planta BiFC assays and in planta FRET-FLIM assays. From this work, we show that the well characterized protein Calcium Dependent Protein Kinase 3 (CPK3) interacts with APX3, HMGB5, ORP2A and a ricin B-related lectin domain containing protein At2g39050. This is one of the first randomin planta screens to be successfully employed. PMID:22789293

2012-01-01

17

COLOMBIA: UNA POLÍTICA DE TIERRAS EN TRANSICIÓN  

Microsoft Academic Search

La distribución inequitativa de la tierra y las implicaciones negativas tanto sociales como económicas resultado de la polarización en Colombia ha sido una preocupación constante para los formuladores de política debido a que la distribución inequitativa de la tierra es uno de los principales impedimentos clave al desarrollo económico y social del país. Se han adoptado una serie de medidas

Banco Mundial

2004-01-01

18

per una responsabilita dell'Universita della  

E-print Network

per una responsabilita ambientale economica e sociale dell'Universita della Svizzera italiana www.sosta.unisi informazioni, idee o proposte: www.sosta.unisi.ch sosta@unisi.ch Il progetto SostA...verso un Ateneo

Krause, Rolf

19

Una década de búsqueda del teatro hondureño  

E-print Network

colectiva, y por la efervescencia política de la época. De tres grupos se destacan: El Teatro Experimental la Merced (TEUM); El Teatro Obrero del Pueblo Unido (TOPU); y Teatro Popular Universitario (TPU). En estos grupos actúan jóvenes que despuntarán... de teatro popular e intento para generar una plataforma artística y de política cultural a tono con esa época de transformaciones sociales en Centroamérica. Su eslogan mismo, "Por SPRING 1992 109 un nuevo teatro para una nueva sociedad," fue punto...

Reyes G., Candelario

1992-04-01

20

Una técnica para filtrar patrones de fringing  

NASA Astrophysics Data System (ADS)

Se presenta una nueva técnica para filtrar los patrones de fringing producidos en los CCDs tipo RCA. El método consiste en construir un mapa con los ángulos de inclinación de las franjas en cada punto de la imagen. Este mapa es ulteriormente utilizado para alinear con el patrón de interferencia una ventana estrecha, sobre la que se aplica un filtro de mediana. Este procedimiento permite eliminar la mayor parte del ruido del patrón de fringing sin destruirlo.

Ostrov, P. G.

21

Efeitos cicatrizantes e antimicrobianos das plantas medicinais especies Porophyllum ruderale (Arnica), Arctium lappa minor (Bardana) e Plantago major (Tanchagem ou Cinco Nervos).  

E-print Network

??Foram estudadas as características fisico-químicas e teores de macro e micronutrientes das espécies das plantas medicinais Arctium lappa minor, Plantago major e Porophyllum ruderale. Através… (more)

Domingos Alves de Lima Neto

1991-01-01

22

Inhibition of Fungal and Bacterial Plant Pathogens In Vitro and In Planta with Ultrashort Cationic Lipopeptides?  

PubMed Central

Plant diseases constitute an emerging threat to global food security. Many of the currently available antimicrobial agents for agriculture are highly toxic and nonbiodegradable and cause extended environmental pollution. Moreover, an increasing number of phytopathogens develop resistance to them. Recently, we have reported on a new family of ultrashort antimicrobial lipopeptides which are composed of only four amino acids linked to fatty acids (A. Makovitzki, D. Avrahami, and Y. Shai, Proc. Natl. Acad. Sci. USA 103:15997-16002, 2006). Here, we investigated the activities in vitro and in planta and the modes of action of these short lipopeptides against plant-pathogenic bacteria and fungi. They act rapidly, at low micromolar concentrations, on the membranes of the microorganisms via a lytic mechanism. In vitro microscopic analysis revealed wide-scale damage to the microorganism's membrane, in addition to inhibition of pathogen growth. In planta potent antifungal activity was demonstrated on cucumber fruits and leaves infected with the pathogen Botrytis cinerea as well as on corn leaves infected with Cochliobolus heterostrophus. Similarly, treatment with the lipopeptides of Arabidopsis leaves infected with the bacterial leaf pathogen Pseudomonas syringae efficiently and rapidly reduced the number of bacteria. Importantly, in contrast to what occurred with many native lipopeptides, no toxicity was observed on the plant tissues. These data suggest that the ultrashort lipopeptides could serve as native-like antimicrobial agents economically feasible for use in plant protection. PMID:17720828

Makovitzki, Arik; Viterbo, Ada; Brotman, Yariv; Chet, Ilan; Shai, Yechiel

2007-01-01

23

Dynamic root exudation of sorgoleone and its in planta mechanism of action  

PubMed Central

The oily droplets exuded from the root hairs of sorghum are composed of a 1:1 ratio of sorgoleone and its lipid resorcinol analogue. The production of these droplets appears to be suppressed when c. 20 ?g of exudate mg?1 root dry weight accumulates at the tip of the root hairs. However, more exudate is produced following gentle washing of the roots with water, suggesting that the biosynthesis of lipid benzoquinones and resorcinols is a dynamic process. Sorgoleone interferes with several molecular target sites, including photosynthetic electron transport, in in vitro assays. However, the in planta mechanism of action of sorgoleone remains controversial because it is not clear whether this lipid benzoquinone exuding from the roots of sorghum is taken up by roots of the receiving plants and translocated to their foliage where it must enter the chloroplast and inhibit PSII in the thylakoid membrane. Experiments designed to test the in planta mode of action of sorgoleone demonstrated that it has no effect on the photosynthesis of older plants, but inhibits photosynthesis in germinating seedlings. Sorgoleone is not translocated acropetally in older plants, but can be absorbed through the hypocotyl and cotyledonary tissues. Therefore, the mode of action of sorgoleone may be the result of inhibition of photosynthesis in young seedlings in concert with inhibition of its other molecular target sites in older plants. PMID:19357432

Dayan, Franck E.; Howell, J'Lynn; Weidenhamer, Jeffrey D.

2009-01-01

24

Aplicaciones prácticas de la fisiología de los herbicidas en las plantas  

NSDL National Science Digital Library

Esta lección se focaliza en el impacto de las características de la planta y el herbicida, importantes para determinar el desempeño del herbicida. Se usarán imágenes visuales para ilustrar varios principios, incluyendo el sitio de absorción del herbicida en la planta, transporte, el sitio de acción sensible, y efectos del ambiente sobre el desempeño del herbicida. Esta información provee la base para maximizar la utilidad del uso de los herbicidas.

25

El Mecanismo Causal del Voto de Oposición a una Obra Vial: Una exploración Espacial y Sociológica  

Microsoft Academic Search

Este estudio presenta la geografía y los mecanismos causales del voto de oposición en el plebiscito a la construcción del segundo piso del Periférico en la ciudad de México. Contiene una revisión de la literatura especializada, una descripción de la obra y el plebiscito, sus resultados, indicadores socioeconómicos, y la aplicación de diversas técnicas de estadística espacial y pruebas no

Carlos J. Vilalta y Perdomo

2006-01-01

26

AtPTR1 and AtPTR5 Transport Dipeptides in Planta1[OA  

PubMed Central

Transporters for di- and tripeptides belong to the large and poorly characterized PTR/NRT1 (peptide transporter/nitrate transporter 1) family. A new member of this gene family, AtPTR5, was isolated from Arabidopsis (Arabidopsis thaliana). Expression of AtPTR5 was analyzed and compared with tissue specificity of the closely related AtPTR1 to discern their roles in planta. Both transporters facilitate transport of dipeptides with high affinity and are localized at the plasma membrane. Mutants, double mutants, and overexpressing lines were exposed to several dipeptides, including toxic peptides, to analyze how the modified transporter expression affects pollen germination, growth of pollen tubes, root, and shoot. Analysis of atptr5 mutants and AtPTR5-overexpressing lines showed that AtPTR5 facilitates peptide transport into germinating pollen and possibly into maturating pollen, ovules, and seeds. In contrast, AtPTR1 plays a role in uptake of peptides by roots indicated by reduced nitrogen (N) levels and reduced growth of atptr1 mutants on medium with dipeptides as the sole N source. Furthermore, overexpression of AtPTR5 resulted in enhanced shoot growth and increased N content. The function in peptide uptake was further confirmed with toxic peptides, which inhibited growth. The results show that closely related members of the PTR/NRT1 family have different functions in planta. This study also provides evidence that the use of organic N is not restricted to amino acids, but that dipeptides should be considered as a N source and transport form in plants. PMID:18753286

Komarova, Nataliya Y.; Thor, Kathrin; Gubler, Adrian; Meier, Stefan; Dietrich, Daniela; Weichert, Annett; Suter Grotemeyer, Marianne; Tegeder, Mechthild; Rentsch, Doris

2008-01-01

27

In planta transformation method for T-DNA transfer in orchids  

NASA Astrophysics Data System (ADS)

Transgenic plant technology is an efficient tool to study the function of gene(s) in plant. The most popular and widely used technique is Agrobacterium-mediated transformation in which cocultivation was done by immersing the plant tissues/organ in overnight bacterial cultured for about 30 minutes to one hour under in vitro condition. In this experiment, we developed more easier technique that omitted the in vitro step during cocultivation with Agrobacterium, namely in planta transformation method. Pollinaria (compact pollen mass of orchid) of Phalaenopsis amabilis and Spathoglottis plicata orchids were used as target explants that were immersed into bacterial culture for 30 minutes, then dried up the pollinaria, the transformed pollinaria was used to pollinate orchid flowers. The T-DNA used for this experiments were Ubipro?PaFT/A. tumefaciens GV3101 for P. amabilis and MeEF1?2 pro?GUS/ A. tumefaciens LBA 4404 for S.plicata. Seeds that were produced from pollinated flowers were grown onto 10 mg/l hygromicin containing NP (New Phalaenopsis) medium. The existance of transgene in putative transformant protocorm (developing orchid embryo) genome was confirmed using PCR with specific primers of either PaFT or GUS genes. Histochemical GUS assay was also performed to the putative transformants. The result showed that transformation frequencies were 2.1 % in P. amabilis, and 0,53% in S. plicata. These results indicates that in planta transformation method could be used for Agrobacterium-mediated genetic transformation, with advantage easier and more secure work from contaminants than that of the in vitro method.

Semiarti, Endang; Purwantoro, Aziz; Mercuriani, Ixora S.; Anggriasari, Anida M.; Jang, Seonghoe; Suhandono, Sony; Machida, Yasunori; Machida, Chiyoko

2014-03-01

28

Rubisco in planta kcat is regulated in balance with photosynthetic electron transport.  

PubMed

Site turnover rate (k(cat)) of Rubisco was measured in intact leaves of different plants. Potato (Solanum tuberosum L.) and birch (Betula pendula Roth.) leaves were taken from field-growing plants. Sunflower (Helianthus annuus L.), wild type (wt), Rubisco-deficient (-RBC), FNR-deficient (-FNR), and Cyt b(6)f deficient (-CBF) transgenic tobacco (Nicotiana tabacum L.) were grown in a growth chamber. Rubisco protein was measured with quantitative SDS-PAGE and FNR protein content with quantitative immunoblotting. The Cyt b(6)f level was measured in planta by maximum electron transport rate and the photosystem I (PSI) content was assessed by titration with far-red light. The CO(2) response of Rubisco was measured in planta with a fast-response gas exchange system at maximum ribulose 1,5-bisphosphate concentration. Reaction site k(cat) was calculated from V(m) and Rubisco content. Biological variation of k(cat) was significant, ranging from 1.5 to 4 s(-1) in wt, but was >6 s(-1) at 23 degrees C in -RBC leaves. The lowest k(cat) of 0.5 s(-1) was measured in -FNR and -CBF plants containing sufficient Rubisco but having slow electron transport rates. Plotting k(cat) against PSI per Rubisco site resulted in a hyperbolic relationship where wt plants are on the initial slope. A model is suggested in which Rubisco Activase is converted into an active ATP-form on thylakoid membranes with the help of a factor related to electron transport. The activation of Rubisco is accompanied by the conversion of the ATP-form into an inactive ADP-form. The ATP and ADP forms of Activase shuttle between thylakoid membranes and stromally-located Rubisco. In normal wt plants the electron transport-related activation of Activase is rate-limiting, maintaining 50-70% Rubisco sites in the inactive state. PMID:19661266

Eichelmann, H; Talts, E; Oja, V; Padu, E; Laisk, A

2009-01-01

29

Pathogenicity and In Planta Mycotoxin Accumulation Among Members of the Fusarium graminearum Species Complex on Wheat and Rice  

Microsoft Academic Search

Goswami, R. S., and Kistler, H. C. 2005. Pathogenicity and in planta mycotoxin accumulation among members of the Fusarium graminearum species complex on wheat and rice. Phytopathology 95:1397-1404. Fusarium head blight (FHB), or scab, is a destructive disease of small grains caused by members of the Fusarium graminearum species com- plex, comprised of at least nine distinct, cryptic species. Members

Rubella S. Goswami; H. Corby Kistler

2005-01-01

30

In planta engineering of viral RNA replicons: Efficient assembly by recombination of DNA modules delivered by Agrobacterium  

Microsoft Academic Search

We have developed an efficient, versatile, and user-friendly viral engineering and expression system that is based on in planta assembly of functional viral vectors from separate pro-vector modules. With this new system, instead of supplying a plant cell with a complete viral vector as a mature viral particle, an RNA or a linear DNA molecule, we use agrobacteria to deliver

Sylvestre Marillonnet; Anatoli Giritch; Mario Gils; Romy Kandzia; Victor Klimyuk; Yuri Gleba

2004-01-01

31

Abono para la planta medicinal Cobra fuerza en la Isla el estudio del valor teraputico de la flora tropical.  

E-print Network

que "muchas plantas americanas (como el tabaco, que se preparaba de diferentes maneras), eran de a otros colegas e investigadores de la Escuela de Farmacia. Entre ellos, figuran Ana Vélez, Ricardo pasos para que este logre la acreditación de la Asociación Americana de Museos. Jardín con historia A su

Quirk, Gregory J.

32

A rapid, novel and high-throughput identification of putative bell pepper transformants generated through in planta transformation approach  

Microsoft Academic Search

The recent progress on bell pepper transformation through in planta approach is incredibly simple with high transformation efficiencies in indigenous varieties. This method produces chimeric primary transformants (T0) hence, a large number of T0 plants and an efficient high throughput screening strategy is necessary to be developed. In the present investigation, we have standardized a rapid and highly efficient method

Arthikala Manoj Kumar; Kalpana N. Reddy; M. Manjulatha; Elizabeth S. Arellano; Rohini Sreevathsa; Girija Ganeshan

2011-01-01

33

Efficacy of phosphonic acid, metalaxyl-M and copper hydroxide against Phytophthora ramorum in vitro and in planta  

Microsoft Academic Search

The ability of metalaxyl-M, phosphonic acid in the form of phosphonate, and copper hydroxide to inhibit different stages in the life cycle of Phytophthora ramorum , the causal agent of sudden oak death (SOD), was tested in vitro using 12 isolates from the North American forest lineage. In addition, experiments were conducted in planta to study the ability of phosphonic

M. Garbelotto; T. Y. Harnik; D. J. Schmidt

2008-01-01

34

Evaluación asimétrica de una red neuronal artificial  

Microsoft Academic Search

Las redes neuronales artificiales (ANN)1 son modelos computacionales que tratan de replicar, de manera simplificada, el complejo funcionamiento del cerebro humano. Su capacidad de aprendizaje a través de ensayos repetidos, las ha hecho muy populares en una amplia variedad de aplicaciones en todas las ciencias. Su reciente implementación en economía se debe al hecho de que en las series económicas

Maria Clara Aristizábal Restrepo

2006-01-01

35

Rapid in planta evaluation of root expressed transgenes in chimeric soybean plants.  

PubMed

Production of stable transgenic plants is one factor that limits rapid evaluation of tissue specific transgene expression. To hasten the assessment of transgenes in planta, we evaluated the use of chimeric soybean seedlings expressing transgenic products in roots. Tap roots from four-day old seedlings (cultivars 'Jack' and KS4704) were excised and hairy roots were induced from hypocotyls via Agrobacterium rhizogenes-mediated transformation. Inoculated hypocotyls were screened on a MS-based medium containing either 200 mg/L kanamycin or 20 mg/L hygromycin. Beta-glucuronidase (GUS) activity assay indicated that highest GUS expression was observed in hypocotyls exposed to a 4-d pre-inoculation time, a neutral pH (7.0) for the co-cultivation medium. A 170-bp of the Fib-1 gene and 292-bp of the Y25C1A.5 gene fragments, both related to nematode reproduction and fitness, were cloned independently into pANDA35HK vector using a Gateway cloning strategy. The resulting RNAi constructs of the genes fragments were transformed into soybean using the chimeric hairy root system and evaluated for its effect on soybean cyst nematode (Heterodera glycines) fecundity. Confirmation of transformation was attained by polymerase chain reaction and Southern-blot analysis, and some potential for suppression of H. glycines reproduction was detected for the two constructs. This method takes on average four weeks to produce chimeric plants ready for transgene analysis. PMID:20012965

Li, Jiarui; Todd, Timothy C; Trick, Harold N

2010-02-01

36

Assessment of factors influencing the Agrobacterium-mediated in planta seed transformation of brinjal (Solanum melongena L.).  

PubMed

An efficient and reproducible in planta transformation method was developed for brinjal using seed as an explant. The brinjal seeds were infected with Agrobacterium tumefaciens EHA 105 harbouring pCAMBIA 1301-bar plasmid, and the transformants were selected against BASTA®. Several parameters influencing the in planta seed transformation such as pre-culture duration, acetosyringone concentration, surfactants, duration of sonication, vacuum pressure and vacuum duration have been evaluated. The putatively transformed (T 0) brinjal plants were screened by GUS histochemical analysis. Among the different combinations and concentrations tested, when the 18-h pre-cultured brinjal seeds were sonicated for 20 min and vacuum infiltered for 3 min at 500 mm of Hg in Agrobacterium suspension containing 100 ?M acetosyringone, 0.2 % Silwett L-77 favoured the Agrobacterium infection and showed maximum transformation efficiency. Among the five brinjal varieties evaluated, Arka Samhitha showed maximum transformation efficiency at 45.66 %. The transgene was successfully transmitted to progeny plants (T 1) which was evidenced by GUS histochemical analysis, polymerase chain reaction and Southern hybridisation. The in planta protocol developed in the present study would be beneficial to transfer the economically and nutritionally important genes into different varieties of brinjal, and the transgenic brinjal plants can be produced in less time (approximately 27 days). PMID:23852797

Subramanyam, Kondeti; Rajesh, Manoharan; Jaganath, Balusamy; Vasuki, Amirthalingam; Theboral, Jeevaraj; Elayaraja, Dhandapani; Karthik, Sivabalan; Manickavasagam, Markandan; Ganapathi, Andy

2013-09-01

37

An efficient in planta transformation of Jatropha curcas (L.) and multiplication of transformed plants through in vivo grafting.  

PubMed

An efficient and reproducible Agrobacterium-mediated in planta transformation was developed in Jatropha curcas. The various factors affecting J. curcas in planta transformation were optimized, including decapitation, Agrobacterium strain, pin-pricking, vacuum infiltration duration and vacuum pressure. Simple vegetative in vivo cleft grafting method was adopted in the multiplication of transformants without the aid of tissue culture. Among the various parameters evaluated, decapitated plants on pin-pricking and vacuum infiltrated at 250 mmHg for 3 min with the Agrobacterium strain EHA 105 harbouring the binary vector pGA 492 was proved to be efficient in all terms with a transformation efficiency of 62.66%. Transgene integration was evinced by the GUS histochemical analysis, and the GUS positive plants were subjected to grafting. Putatively transformed J. curcas served as "Scion" and the wild type J. curcas plant severed as "Stock". There was no occurrence of graft rejection and the plants were then confirmed by GUS histochemical analysis, polymerase chain reaction (PCR) and Southern hybridization. Genetic stability of the grafted plants was evaluated by using randomly amplified polymorphic DNA (RAPD), marker which showed 100% genetic stability between mother and grafted plants. Thus, an efficient in planta transformation and grafting based multiplication of J. curcas was established. PMID:24150424

Jaganath, Balusamy; Subramanyam, Kondeti; Mayavan, Subramanian; Karthik, Sivabalan; Elayaraja, Dhandapani; Udayakumar, Rajangam; Manickavasagam, Markandan; Ganapathi, Andy

2014-05-01

38

Para presentar unas visiones: El teatro salvadoreño  

E-print Network

experiencias acumuladas y a la enorme voluntad que se traía por hacer arte en el país. Parte de la experiencia es también la apertura, el no cerrarse y abrirse al trabajo conjunto rompiendo así viejas tradiciones y tabúes para ir a la búsqueda de los medios... difuminó y en la actualidad estamos en plena búsqueda para superar las mismas contradicciones que generaron esa guerra; entre esas contradicciones está la falta de una política cultural desde el punto de vista del estado salvadoreño, como de los...

Cea, José Roberto

2000-10-01

39

Floral benzenoid carboxyl methyltransferases: From in vitro to in planta function  

PubMed Central

Benzenoid carboxyl methyltransferases synthesize methyl esters (e.g., methyl benzoate and methyl salicylate), which are constituents of aromas and scents of many plant species and play important roles in plant communication with the surrounding environment. Within the past five years, eleven such carboxyl methyltransferases were isolated and most of them were comprehensively investigated at the biochemical, molecular and structural level. Two types of enzymes can be distinguished according to their substrate preferences: the SAMT-type enzymes isolated from Clarkia breweri, Stephanotis floribunda, Antirrhinum majus, Hoya carnosa, and Petunia hybrida, which have a higher catalytic efficiency and preference for salicylic acid, while BAMT-type enzymes from A. majus, Arabidopsis thaliana, Arabidopsis lyrata, and Nicotiana suaveolens prefer benzoic acid. The elucidation of C. breweri SAMT’s three-dimensional structure allowed a detailed modelling of the active sites of the carboxyl methyltransferases and revealed that the SAM binding pocket is highly conserved among these enzymes while the methyl acceptor binding site exhibits some variability, allowing a classification into SAMT-type and BAMT-type enzymes. The analysis of expression patterns coupled with biochemical characterization showed that these carboxyl methyltransferases are involved either in floral scent biosynthesis or in plant defense responses. While the latter can be induced by biotic or abiotic stress, the genes responsible for floral scent synthesis exhibit developmental and rhythmic expression pattern. The nature of the product and efficiency of its formation in planta depend on the availability of substrates, the catalytic efficiency of the enzyme toward benzoic acid and/or salicylic acid, and the transcriptional, translational, and post-translational regulation at the enzyme level. The biochemical properties of benzenoid carboxyl methyltransferases suggest that the genes involved in plant defenses might represent the ancestor for the presently existing floral genes which during evolution gained different expression profiles and encoded enzymes with the ability to accept structurally similar substrates. PMID:15946712

Effmert, Uta; Saschenbrecker, Sandra; Ross, Jeannine; Negre, Florence; Fraser, Chris M.; Noel, Joseph P.; Dudareva, Natalia; Piechulla, Birgit

2010-01-01

40

Bioinspired engineering study of Plantae vascules for self-healing composite structures  

PubMed Central

This paper presents the first conceptual study into creating a Plantae-inspired vascular network within a fibre-reinforced polymer composite laminate, which provides an ongoing self-healing functionality without incurring a mass penalty. Through the application of a ‘lost-wax’ technique, orthogonal hollow vascules, inspired by the ‘ray cell’ structures found in ring porous hardwoods, were successfully introduced within a carbon fibre-reinforced epoxy polymer composite laminate. The influence on fibre architecture and mechanical behaviour of single vascules (located on the laminate centreline) when aligned parallel and transverse to the local host ply was characterized experimentally using a compression-after-impact test methodology. Ultrasonic C-scanning and high-resolution micro-CT X-ray was undertaken to identify the influence of and interaction between the internal vasculature and impact damage. The results clearly show that damage morphology is influenced by vascule orientation and that a 10 J low-velocity impact damage event is sufficient to breach the vasculature; a prerequisite for any subsequent self-healing function. The residual compressive strength after a 10 J impact was found to be dependent upon vascule orientation. In general, residual compressive strength decreased to 70 per cent of undamaged strength when vasculature was aligned parallel to the local host ply and a value of 63 per cent when aligned transverse. This bioinspired engineering study has illustrated the potential that a vasculature concept has to offer in terms of providing a self-healing function with minimum mass penalty, without initiating premature failure within a composite structure. PMID:19955122

Trask, R. S.; Bond, I. P.

2010-01-01

41

Abscisic acid metabolizing rhizobacteria decrease ABA concentrations in planta and alter plant growth.  

PubMed

Although endogenous phytohormones such as abscisic acid (ABA) regulate root growth, and many rhizobacteria can modulate root phytohormone status, hitherto there have been no reports of rhizobacteria mediating root ABA concentrations and growth by metabolising ABA. Using a selective ABA-supplemented medium, two bacterial strains were isolated from the rhizosphere of rice (Oryza sativa) seedlings grown in sod-podzolic soil and assigned to Rhodococcus sp. P1Y and Novosphingobium sp. P6W using partial 16S rRNA gene sequencing and phenotypic patterns by the GEN III MicroPlate test. Although strain P6W had more rapid growth in ABA-supplemented media than strain P1Y, both could utilize ABA as a sole carbon source in batch culture. When rice seeds were germinated on filter paper in association with bacteria, root ABA concentration was not affected, but shoot ABA concentration of inoculated plants decreased by 14% (strain P6W) and 22% (strain P1Y). When tomato (Solanum lycopersicum) genotypes differing in ABA biosynthesis (ABA deficient mutants flacca - flc, and notabilis - not and the wild-type cv. Ailsa Craig, WT) were grown in gnotobiotic cultures on nutrient solution agar, rhizobacterial inoculation decreased root and/or leaf ABA concentrations, depending on plant and bacteria genotypes. Strain P6W inhibited primary root elongation of all genotypes, but increased leaf biomass of WT plants. In WT plants treated with silver ions that inhibit ethylene perception, both ABA-metabolising strains significantly decreased root ABA concentration, and strain P6W decreased leaf ABA concentration. Since these changes in ABA status also occurred in plants that were not treated with silver, it suggests that ethylene was probably not involved in regulating bacteria-mediated changes in ABA concentration. Correlations between plant growth and ABA concentrations in planta suggest that ABA-metabolising rhizobacteria may stimulate growth via an ABA-dependent mechanism. PMID:24270514

Belimov, Andrey A; Dodd, Ian C; Safronova, Vera I; Dumova, Valentina A; Shaposhnikov, Alexander I; Ladatko, Alexander G; Davies, William J

2014-01-01

42

Label-free chemically specific imaging in planta with stimulated Raman scattering microscopy.  

PubMed

The growing world population puts ever-increasing demands on the agricultural and agrochemical industries to increase agricultural yields. This can only be achieved by investing in fundamental plant and agrochemical research and in the development of improved analytical tools to support research in these areas. There is currently a lack of analytical tools that provide noninvasive structural and chemical analysis of plant tissues at the cellular scale. Imaging techniques such as coherent anti-Stokes Raman scattering (CARS) and stimulated Raman scattering (SRS) microscopy provide label-free chemically specific image contrast based on vibrational spectroscopy. Over the past decade, these techniques have been shown to offer clear advantages for a vast range of biomedical research applications. The intrinsic vibrational contrast provides label-free quantitative functional analysis, it does not suffer from photobleaching, and it allows near real-time imaging in 3D with submicrometer spatial resolution. However, due to the susceptibility of current detection schemes to optical absorption and fluorescence from pigments (such as chlorophyll), the plant science and agrochemical research communities have not been able to benefit from these techniques and their application in plant research has remained virtually unexplored. In this paper, we explore the effect of chlorophyll fluorescence and absorption in CARS and SRS microscopy. We show that with the latter it is possible to use phase-sensitive detection to separate the vibrational signal from the (electronic) absorption processes. Finally, we demonstrate the potential of SRS for a range of in planta applications by presenting in situ chemical analysis of plant cell wall components, epicuticular waxes, and the deposition of agrochemical formulations onto the leaf surface. PMID:23581493

Mansfield, Jessica C; Littlejohn, George R; Seymour, Mark P; Lind, Rob J; Perfect, Sarah; Moger, Julian

2013-05-21

43

Significant reduction of BiFC non-specific assembly facilitates in planta assessment of heterotrimeric G-protein interactors.  

PubMed

Protein networks and signaling cascades are key mechanisms for intra- and intercellular signal transduction. Identifying the interacting partners of a protein can provide vital clues regarding its physiological role. The bimolecular fluorescence complementation (BiFC) assay has become a routine tool for in vivo analysis of protein-protein interactions and their subcellular location. Although the BiFC system has improved since its inception, the available options for in planta analysis are still subject to very low signal-to-noise ratios, and a systematic comparison of BiFC confounding background signals has been lacking. Background signals can obscure weak interactions, provide false positives, and decrease confidence in true positives. To overcome these problems, we performed an extensive in planta analysis of published BiFC fragments used in metazoa and plants, and then developed an optimized single vector BiFC system which utilizes monomeric Venus (mVenus) split at residue 210, and contains an integrated mTurquoise2 marker to precisely identify transformed cells in order to distinguish true negatives. Here we provide our streamlined double ORF expression (pDOE) BiFC system, and show that our advance in BiFC methodology functions even with an internally fused mVenus210 fragment. We illustrate the efficacy of the system by providing direct visualization of Arabidopsis MLO1 interacting with a calmodulin-like (CML) protein, and by showing that heterotrimeric G-protein subunits G? (GPA1) and G? (AGB1) interact in plant cells. We further demonstrate that GPA1 and AGB1 each physically interact with PLD?1 in planta, and that mutation of the so-called PLD?1 'DRY' motif abolishes both of these interactions. PMID:25187041

Gookin, Timothy E; Assmann, Sarah M

2014-11-01

44

The In Planta Transcriptome of Ralstonia solanacearum: Conserved Physiological and Virulence Strategies during Bacterial Wilt of Tomato  

PubMed Central

ABSTRACT Plant xylem fluid is considered a nutrient-poor environment, but the bacterial wilt pathogen Ralstonia solanacearum is well adapted to it, growing to 108 to 109 CFU/g tomato stem. To better understand how R. solanacearum succeeds in this habitat, we analyzed the transcriptomes of two phylogenetically distinct R. solanacearum strains that both wilt tomato, strains UW551 (phylotype II) and GMI1000 (phylotype I). We profiled bacterial gene expression at ~6 × 108 CFU/ml in culture or in plant xylem during early tomato bacterial wilt pathogenesis. Despite phylogenetic differences, these two strains expressed their 3,477 common orthologous genes in generally similar patterns, with about 12% of their transcriptomes significantly altered in planta versus in rich medium. Several primary metabolic pathways were highly expressed during pathogenesis. These pathways included sucrose uptake and catabolism, and components of these pathways were encoded by genes in the scrABY cluster. A UW551 scrA mutant was significantly reduced in virulence on resistant and susceptible tomato as well as on potato and the epidemiologically important weed host Solanum dulcamara. Functional scrA contributed to pathogen competitive fitness during colonization of tomato xylem, which contained ~300 µM sucrose. scrA expression was induced by sucrose, but to a much greater degree by growth in planta. Unexpectedly, 45% of the genes directly regulated by HrpB, the transcriptional activator of the type 3 secretion system (T3SS), were upregulated in planta at high cell densities. This result modifies a regulatory model based on bacterial behavior in culture, where this key virulence factor is repressed at high cell densities. The active transcription of these genes in wilting plants suggests that T3SS has a biological role throughout the disease cycle. PMID:22807564

Jacobs, Jonathan M.; Babujee, Lavanya; Meng, Fanhong; Milling, Annett; Allen, Caitilyn

2012-01-01

45

Usar una tabla de numeros aleatorios para seleccionar una muestra aleatoria simple  

E-print Network

siguientes pasos: 1) Elige al azar una de las filas de la tabla de n´umeros aleatorios (Tabla 2). Supongamos que hemos elegido la tercera fila. 2) Separa los n´umeros de la fila elegida de tres en tres, es decir observaciones. Bas´andonos en la fila 3 tendr´iamos: 002 lo que nos da i = 2, 294 (pasamos), 351 (pasamos), 098

Gil, Ana Arribas

46

Probabilidad II 1. Sea f : E una funcion, y sea E P(E) una -algebra de subcon-  

E-print Network

bolas blancas y m bolas negras. Sacamos una bola, nos fijamos en su color, y la regresamos junto con c bolas del mismo color. Luego sacamos una segunda bola de la urna. ¿Cu´al es la probabilidad de que la primera bola haya sido blanca si la segunda fue negra? 3. Sea (An)n1 una sucesi´on de conjuntos. Demuestre

Aíza, Ricardo Gómez

47

Discapacidad y comunicación: una experiencia de fonética aplicada  

Microsoft Academic Search

Las sociedades albergan un amplio número de personas que de una manera u otra presentan alteraciones en su comunicación, ya sea para producir mensajes, para recibirlos o procesarlos. Desde esta perspectiva, este trabajo presenta una aplicación de los resultados de investigación en fonética experimental al desarrollo de un sistema de comunicación humano-máquina que dio origen al Proyecto Discapacidad y Comunicación

Elsa Mora Gallardo

2008-01-01

48

ITS (Infecciones de Transmisin Sexual) Qu es una ITS?  

E-print Network

masajes, roce corporal, sexo oral a un hombre usando condón o sexo oral a una mujer usando una barrera de de riesgo Muestras algún signo o síntoma de ITS Has practicado sexo oral, anal o vaginal sin usar

Tullos, Desiree

49

Plastid-localized amino acid biosynthetic pathways of Plantae are predominantly composed of non-cyanobacterial enzymes  

PubMed Central

Studies of photosynthetic eukaryotes have revealed that the evolution of plastids from cyanobacteria involved the recruitment of non-cyanobacterial proteins. Our phylogenetic survey of >100 Arabidopsis nuclear-encoded plastid enzymes involved in amino acid biosynthesis identified only 21 unambiguous cyanobacterial-derived proteins. Some of the several non-cyanobacterial plastid enzymes have a shared phylogenetic origin in the three Plantae lineages. We hypothesize that during the evolution of plastids some enzymes encoded in the host nuclear genome were mistargeted into the plastid. Then, the activity of those foreign enzymes was sustained by both the plastid metabolites and interactions with the native cyanobacterial enzymes. Some of the novel enzymatic activities were favored by selective compartmentation of additional complementary enzymes. The mosaic phylogenetic composition of the plastid amino acid biosynthetic pathways and the reduced number of plastid-encoded proteins of non-cyanobacterial origin suggest that enzyme recruitment underlies the recompartmentation of metabolic routes during the evolution of plastids. PMID:23233874

Reyes-Prieto, Adrian; Moustafa, Ahmed

2012-01-01

50

Correlations between camptothecin and related metabolites in Camptotheca acuminata reveal similar biosynthetic principles and in planta synergistic effects.  

PubMed

Camptothecin (CPT), 9-methoxycamptothecin (9-MeO-CPT), and 10-hydroxycamptothecin (10-OH-CPT) are potent antineoplastic metabolites. We analyzed these metabolites in Camptotheca acuminata sampled from Germany and China, using LC-MS/MS and LC-ESI-HRMS/MS, coupled with chemometrics. Multivariate analysis revealed that fresh stems of C. acuminata from China had the highest comprehensive metabolite load. Significant positive correlations of CPT with 9-MeO-CPT and 10-OH-CPT were observed by Kruskal's multidimensional scaling and principal component analysis. Linear discriminant analysis and hierarchical agglomerative cluster analysis revealed that C. acuminata from China was separated from others. These positive correlations indicate that these metabolites are biosynthesized similarly and operate synergistically in planta. PMID:21238548

Kusari, Souvik; Zühlke, Sebastian; Spiteller, Michael

2011-04-01

51

Development of fiber optic spectroscopy for in-vitro and in-planta detection of fluorescent proteins  

NASA Astrophysics Data System (ADS)

The objective of this project is to apply photonics technology to bio-safety management of genetically modified (GM) plants. The conventional method for screening GM plants is through selection using antibiotic resistance markers. There is public concern with such approaches and these are associated with food safety issues, escape of antibiotic resistance genes to pathogenic microorganisms and interference with antibiotic therapy. Thus, the strategy taken in this project is to replace antibiotic resistance markers with fluorescent protein markers that allow for rapid and non-invasive optical screening of genetically modified plants. In this paper, fibre optic spectroscopy was developed to detect and quantify recombinant green (EGFP) and red (DsRED) fluorescent proteins in vitro and in planta. In vitro detection was first carried out to optimize the sensitivity of the optical system. The bacterial expression vectors carrying the coding regions of EGFP and DsRED were introduced into Escherichia coli host cells and fluorescent proteins were produced following induction with IPTG. Soluble EGFP and DsRED proteins were isolated from lysed bacterial cells and serially diluted for quantitative analysis by fibre optic spectroscopy using different light sources, namely, blue LED (475 nm), tungsten halogen (350 - 1000 nm) and double frequency Nd:YAG green laser (532 nm). Fluorescence near the expected emission wavelengths could be detected up to 320X dilution for EGFP and DsRED with blue LED and 532 nm green laser, respectively, as the excitation source. Tungsten halogen was found to be unsuitable for excitation of both EGFP and DsRED. EGFP was successfully purified by size separation under non-denaturing electrophoretic conditions and quantified. The minimum concentration of EGFP detectable with blue LED excitation was 5 mg/ml. To determine the capability of spectroscopy detection in planta, transgenic potato hairy roots and whole modified plant lines expressing the fluorescent markers were regenerated. T

Liew, Oi Wah; Chen, Jun-Wei; Asundi, Anand K.

2001-10-01

52

¿Es posible y deseable una dramaturgia específicamente femenina?  

E-print Network

forma expresiva? Inicial y principalmente, por una capacidad innata de visualizar situaciones y conflictos, visualizar la acción y hacer que incluso la palabra misma sea acción: fonética y gramática. La contribución al teatro que podemos hacer las...

Gambaro, Griselda

1980-07-01

53

Consentimiento informado: una praxis dialogica para la investigacion  

PubMed Central

El consentimiento informado es un proceso, en el que una persona acepta participar en una investigation, conociendo los riesgos, beneficios, consecuencias o problemas que se puedan presenter durante el desarrollo de la misma. El objetivo de este trabajo es reunir las caracteristicas del proceso de consentimiento informado (PCI) pare que su discernimiento y cumplimiento posibilite el ejercicio etc° dialogico, reflexivo y responsable del investigador. Se presentan los resultados de una extensa revision de les elementos del PCI, desde sus cornponentes hasta su fundamento etico y legal, incluyendo los mites y realidades que existen sobre el formato de consentimiento informado come recurso legal de protection. El consentimiento informado no es un formato establecido que los investigadores repliquen, se trata de que la praxis del PCI sea una tarea cotidiana dentro de la investigation con seres humanos, como comunicaciOn deliberative y critica, responsable y comprometida entre dos agentes morales, investigador-investigado. PMID:19507477

Mondragon-Barrios, Liliana

2009-01-01

54

La reconstrucción del seno después de una mastectomía  

Cancer.gov

Hoja informativa que describe la reconstrucción del seno (mama) después de una mastectomía. Contiene información sobre las opciones quirúrgicas, los cuidados de seguimiento y los exámenes de detección del cáncer de seno después de la reconstrucción.

55

Una perdita di identit: la nascita della statistica  

E-print Network

solo valori che sono multipli interi di una quantità indivisibile (il quanto) Planck De Broglie Einstein Bohr Heisenberg Schrodinger DiracFermi #12;· S. N. Bose, "Plancks Gesetz und Lichtquantenhypothese

Spagnolo, Filippo

56

Lichens from the Una National Park (Bosnia and Herzegovina)  

Microsoft Academic Search

BILOVITZ P.O., Türk R. & MAYRHOFER H. 2009: Lichens from the Una National Park (Bosnia and Herzegovina). - Fritschiana (Graz) 65: 47-51. - ISSN 1024-0306 Abstract: A list of 57 taxa of lichens (56 species) from the Una National Park in the north-western part of Bosnia and Herzegovina is presented. Bacidia subincompta, Buellia griseovirens, Candelariella reflexa, Cetrelia monachorum, Fulgensia subbracteata,

Walter OBERMAYER; Josef HAFELLNER; Peter O. BILOVITZ; Roman TÜRK; Helmut MAYRHOFER

57

Methodology for producing 100 tons of fuel peat for a cement plant test burn. Metodologia para producir 100 toneladas de turba combustible para una prueba de quema en uns planta de cemento  

SciTech Connect

As a part of the Agency for International Development-funded cooperative project between Los Alamos and Costa Rica, the burning characteristics of Costa Rican peat were to be tested in an application. The cement plant owned by Industria National de Cemento in Cartago has a capability to handle solid fuel and was chosen for the burn demonstration. The Jungle No. 1 Peat Deposit near El Cairo was chosen as the site of the peat excavation. This peat production methodology study covers project site selection, installation of an access road and clearing of the jungle vegetation, removal of an upper layer of organic peat, excavation of fuel-grade peat, transport of the peat to the drying site, and drying and stockpiling of the finished product. As of this date the peat removal for the demonstration project has been started, and a description of the operation is included as an appendix to this paper. 10 figs.

Allen, A.B.; Malavassi, L.; Ramirez, O.; Thayer, G. (Allen (Andrew), Plymouth, NC (USA); RECOPE, San Jose (Costa Rica); Los Alamos National Lab., NM (USA))

1989-05-01

58

ENERGÍA SOLAR Y AGRICULTURA EN CUBA. CONCEPCIÓN Y PRUEBAS DE UN SECADOR SOLAR DE PLANTAS MEDICINALES CON CUBIERTA DE POLIETILENO  

Microsoft Academic Search

En el presente trabajo se presenta la concepción, construcción, y pruebas de factibilidad de un secador solar de cubierta de polietileno introducido en una Unidad Básica Económica del MINAGRI , en la provincia de Santiago de Cuba, Cuba. El secador fue evaluado utilizando instrumentos y técnicas de precisión para medir radiación solar y temperaturas del aire, lo que permitió hacer

Ciro César Bergues Ricardo; Pedro Griñàn Villafañe; Jorge Luis Abdala R; Susana Fonseca Fonseca; Alonso Torres Ten

2011-01-01

59

The in planta transcriptome of Ralstonia solanacearum: conserved physiological and virulence strategies during bacterial wilt of tomato.  

PubMed

Plant xylem fluid is considered a nutrient-poor environment, but the bacterial wilt pathogen Ralstonia solanacearum is well adapted to it, growing to 10(8) to 10(9) CFU/g tomato stem. To better understand how R. solanacearum succeeds in this habitat, we analyzed the transcriptomes of two phylogenetically distinct R. solanacearum strains that both wilt tomato, strains UW551 (phylotype II) and GMI1000 (phylotype I). We profiled bacterial gene expression at ~6 × 10(8) CFU/ml in culture or in plant xylem during early tomato bacterial wilt pathogenesis. Despite phylogenetic differences, these two strains expressed their 3,477 common orthologous genes in generally similar patterns, with about 12% of their transcriptomes significantly altered in planta versus in rich medium. Several primary metabolic pathways were highly expressed during pathogenesis. These pathways included sucrose uptake and catabolism, and components of these pathways were encoded by genes in the scrABY cluster. A UW551 scrA mutant was significantly reduced in virulence on resistant and susceptible tomato as well as on potato and the epidemiologically important weed host Solanum dulcamara. Functional scrA contributed to pathogen competitive fitness during colonization of tomato xylem, which contained ~300 µM sucrose. scrA expression was induced by sucrose, but to a much greater degree by growth in planta. Unexpectedly, 45% of the genes directly regulated by HrpB, the transcriptional activator of the type 3 secretion system (T3SS), were upregulated in planta at high cell densities. This result modifies a regulatory model based on bacterial behavior in culture, where this key virulence factor is repressed at high cell densities. The active transcription of these genes in wilting plants suggests that T3SS has a biological role throughout the disease cycle. IMPORTANCE Ralstonia solanacearum is a widespread plant pathogen that causes bacterial wilt disease. It inflicts serious crop losses on tropical farmers, with major economic and human consequences. It is also a model for the many destructive microbes that colonize the water-conducting plant xylem tissue, which is low in nutrients and oxygen. We extracted bacteria from infected tomato plants and globally identified the biological functions that R. solanacearum expresses during plant pathogenesis. This revealed the unexpected presence of sucrose in tomato xylem fluid and the pathogen's dependence on host sucrose for virulence on tomato, potato, and the common weed bittersweet nightshade. Further, R. solanacearum was highly responsive to the plant environment, expressing several metabolic and virulence functions quite differently in the plant than in pure culture. These results reinforce the utility of studying pathogens in interaction with hosts and suggest that selecting for reduced sucrose levels could generate wilt-resistant crops. PMID:22807564

Jacobs, Jonathan M; Babujee, Lavanya; Meng, Fanhong; Milling, Annett; Allen, Caitilyn

2012-01-01

60

A Rapid, Highly Efficient and Economical Method of Agrobacterium-Mediated In planta Transient Transformation in Living Onion Epidermis  

PubMed Central

Transient transformation is simpler, more efficient and economical in analyzing protein subcellular localization than stable transformation. Fluorescent fusion proteins were often used in transient transformation to follow the in vivo behavior of proteins. Onion epidermis, which has large, living and transparent cells in a monolayer, is suitable to visualize fluorescent fusion proteins. The often used transient transformation methods included particle bombardment, protoplast transfection and Agrobacterium-mediated transformation. Particle bombardment in onion epidermis was successfully established, however, it was expensive, biolistic equipment dependent and with low transformation efficiency. We developed a highly efficient in planta transient transformation method in onion epidermis by using a special agroinfiltration method, which could be fulfilled within 5 days from the pretreatment of onion bulb to the best time-point for analyzing gene expression. The transformation conditions were optimized to achieve 43.87% transformation efficiency in living onion epidermis. The developed method has advantages in cost, time-consuming, equipment dependency and transformation efficiency in contrast with those methods of particle bombardment in onion epidermal cells, protoplast transfection and Agrobacterium-mediated transient transformation in leaf epidermal cells of other plants. It will facilitate the analysis of protein subcellular localization on a large scale. PMID:24416168

Xu, Kedong; Huang, Xiaohui; Wu, Manman; Wang, Yan; Chang, Yunxia; Liu, Kun; Zhang, Ju; Zhang, Yi; Zhang, Fuli; Yi, Liming; Li, Tingting; Wang, Ruiyue; Tan, Guangxuan; Li, Chengwei

2014-01-01

61

Cloning and characterization of pl1 encoding an in planta-secreted pectate lyase of Fusarium oxysporum.  

PubMed

A pectate lyase (PL1) from the tomato vascular wilt pathogen Fusarium oxysporum f.sp. lycopersici was previously characterized, and evidence was obtained for its production in planta. The gene encoding PL1 was isolated from a genomic library of F. oxysporum f. sp. lycopersici. Pl1 encodes a 240 amino-acid polypeptide with one putative N-glycosylation site and a 15 amino-acid N-terminal signal peptide. PL1 showed 89%, 67%, 55% and 56% identity with the products of the Fusarium solani f.sp. pisi pelA, pelB, pelC and pelD genes, respectively. A single copy of the gene was detected in different formae speciales of F. oxysporum. The pl1 transcript was observed during growth on polygalacturonic acid sodium salt and tomato vascular tissue, but not on pectin or glucose. RT-PCR showed pl1 expression in roots and stems of tomato plants infected by F. oxysporum f.sp. lycopersici. PMID:10022947

Huertas-González, M D; Ruiz-Roldán, M C; García Maceira, F I; Roncero, M I; Di Pietro, A

1999-02-01

62

Agrobacterium tumefaciens deploys a superfamily of type VI secretion DNase effectors as weapons for interbacterial competition in planta.  

PubMed

The type VI secretion system (T6SS) is a widespread molecular weapon deployed by many Proteobacteria to target effectors/toxins into both eukaryotic and prokaryotic cells. We report that Agrobacterium tumefaciens, a soil bacterium that triggers tumorigenesis in plants, produces a family of type VI DNase effectors (Tde) that are distinct from previously known polymorphic toxins and nucleases. Tde exhibits an antibacterial DNase activity that relies on a conserved HxxD motif and can be counteracted by a cognate immunity protein, Tdi. In vitro, A. tumefaciens T6SS could kill Escherichia coli but triggered a lethal counterattack by Pseudomonas aeruginosa upon injection of the Tde toxins. However, in an in planta coinfection assay, A. tumefaciens used Tde effectors to attack both siblings cells and P. aeruginosa to ultimately gain a competitive advantage. Such acquired T6SS-dependent fitness in vivo and conservation of Tde-Tdi couples in bacteria highlights a widespread antibacterial weapon beneficial for niche colonization. PMID:24981331

Ma, Lay-Sun; Hachani, Abderrahman; Lin, Jer-Sheng; Filloux, Alain; Lai, Erh-Min

2014-07-01

63

Lichens from the Una National Park (Bosnia and Herzegovina).  

PubMed

A list of 57 taxa of lichens (56 species) from the Una National Park in the north-western part of Bosnia and Herzegovina is presented. Bacidia subincompta, Buellia griseovirens, Candelariella reflexa, Cetrelia monachorum, Fulgensia subbacteata, Lecanora subcarpinea, L. subrugosa, and Trapeliopsis viridescens are new for Bosnia and Herzegovina. PMID:22318913

Bilovitz, Peter O; Türk, Roman; Mayrhofer, Helmut

2009-08-31

64

Calcolo di un limite di una funzione a partire  

E-print Network

. Spezia L. Curcio M. V. Callari G. Cuccia DOCENTE Prof. F. Spagnolo LABORATORIO DIDATTICO DI ANALISI si richiede il limite E' presente una discontinuità di seconda specie in zero. 3 1 x )xcos( )x(g( k,PSi #12;· Occurrences (Frequenze Assolute): · Moyenne (Frequenze relative marginali di colonna

Spagnolo, Filippo

65

Deteccion facial basada en una distancia de Hausdorff normalizada  

E-print Network

al problema concreto. En el presente art´iculo mostramos un sistema de detecci´on de caras basado en incluya tan solo una. En el caso concreto de la localizaci´on facial, estos mismos estudios [1] in- dican

Escolano, Francisco

66

Métricas de Funcionalidad: una taxonomía para sistemas Web  

Microsoft Academic Search

Muy poco de lo aprendido en ingeniería de software, se aplica en el desarrollo de sistemas Web. Esto se debe, entre otras cosas, porque hay algunas diferencias en el diseño, desarrollo y mantenimiento de estos sistemas. Una importante parte de un sistema Web tiene que ver con su contenido y su diseño gráfico, además de su funcionalidad. Debido a esto,

Cristian Bravo Lillo; Luis A. Guerrero

67

Lichens from the Una National Park (Bosnia and Herzegovina)  

PubMed Central

A list of 57 taxa of lichens (56 species) from the Una National Park in the north-western part of Bosnia and Herzegovina is presented. Bacidia subincompta, Buellia griseovirens, Candelariella reflexa, Cetrelia monachorum, Fulgensia subbacteata, Lecanora subcarpinea, L. subrugosa, and Trapeliopsis viridescens are new for Bosnia and Herzegovina. PMID:22318913

Bilovitz, Peter O.; Turk, Roman; Mayrhofer, Helmut

2011-01-01

68

Mercados base de pirámide: una revisión de literatura  

Microsoft Academic Search

Este artículo presenta una revisión de la literatura internacional sobre los mercados base de pirámide, un concepto relativamente reciente en la administración de empresas pero de gran interés y especial importancia. El estudio aborda las diferentes perspectivas desde las cuales se estudia y las variables con las que se relaciona. De igual forma, presenta las opiniones de dos expertos, doctor

María Paula Castaño Villamil; María Vanessa Rodríguez Tovar

2010-01-01

69

José Antonio Ramos: Una línea ascendente de rebeldía  

E-print Network

representación y sedas, para sabias monerías, nadie nos gana. FU-3001 es teatro en la medida que le importaba a Ramos, "como arte social en acción." Esta comedia realista se caracteriza por ser una crítica inci siva y caricaturesca a la ideología pequeño...

Garzó n Cé spedes, Francisco

1981-04-01

70

Una marca de agua inteligente aplicada al dinero electrnico  

E-print Network

Una marca de agua inteligente aplicada al dinero electrónico Patricia Jaimes1*, Gabriel Hermosillo2.hermosillo}@inria.fr Resumen El uso de las marcas de agua se ha incrementado, principal- mente por la necesidad de proteger los manera segura para expandir las aplicaciones actuales de las marcas de agua, dán- doles exibilidad

Boyer, Edmond

71

A Real-Time Fluorogenic Assay for the Visualization of Glycoside Hydrolase Activity in Planta1[C][OA  

PubMed Central

There currently exists a diverse array of molecular probes for the in situ localization of polysaccharides, nucleic acids, and proteins in plant cells, including reporter enzyme strategies (e.g. protein-glucuronidase fusions). In contrast, however, there is a paucity of methods for the direct analysis of endogenous glycoside hydrolases and transglycosidases responsible for cell wall remodeling. To exemplify the potential of fluorogenic resorufin glycosides to address this issue, a resorufin ?-glycoside of a xylogluco-oligosaccharide (XXXG-?-Res) was synthesized as a specific substrate for in planta analysis of XEH activity. The resorufin aglycone is particularly distinguished for high sensitivity in muro assays due to a low pKa (5.8) and large extinction coefficient (? 62,000 m?1cm?1), long-wavelength fluorescence (excitation 571 nm/emission 585 nm), and high quantum yield (0.74) of the corresponding anion. In vitro analyses demonstrated that XXXG-?-Res is hydrolyzed by the archetypal plant XEH, nasturtium (Tropaeolum majus) NXG1, with classical Michaelis-Menten substrate saturation kinetics and a linear dependence on both enzyme concentration and incubation time. Further, XEH activity could be visualized in real time by observing the localized increase in fluorescence in germinating nasturtium seeds and Arabidopsis (Arabidopsis thaliana) inflorescent stems by confocal microscopy. Importantly, this new in situ XEH assay provides an essential complement to the in situ xyloglucan endotransglycosylase assay, thus allowing delineation of the disparate activities encoded by xyloglucan endotransglycosylase/hydrolase genes directly in plant tissues. The observation that XXXG-?-Res is also hydrolyzed by diverse microbial XEHs indicates that this substrate, and resorufin glycosides in general, may find broad applicability for the analysis of wall restructuring by polysaccharide hydrolases during morphogenesis and plant-microbe interactions. PMID:19783642

Ibatullin, Farid M.; Banasiak, Alicja; Baumann, Martin J.; Greffe, Lionel; Takahashi, Junko; Mellerowicz, Ewa J.; Brumer, Harry

2009-01-01

72

Bikinin-like inhibitors targeting GSK3/Shaggy-like kinases: characterisation of novel compounds and elucidation of their catabolism in planta  

PubMed Central

Background Plant GSK-3/Shaggy-like kinases are key players in brassinosteroid (BR) signalling which impact on plant development and participate in response to wounding, pathogens and salt stress. Bikinin was previously identified in a chemical genetics screen as an inhibitor targeting these kinases. To dissect the structural elements crucial for inhibition of GSK-3/Shaggy-like kinases by bikinin and to isolate more potent compounds we synthesised a number of related substances and tested their inhibitory activity in vitro and in vivo using Arabidopsis thaliana. Results A pyridine ring with an amido succinic acid residue in position 2 and a halogen in position 5 were crucial for inhibitory activity. The compound with an iodine substituent in position 5, denoted iodobikinin, was most active in inhibiting BIN2 activity in vitro and efficiently induced brassinosteroid-like responses in vivo. Its methyl ester, methyliodobikinin, showed improved cell permeability, making it highly potent in vivo although it had lower activity in vitro. HPLC analysis revealed that the methyl residue was rapidly cleaved off in planta liberating active iodobikinin. In addition, we provide evidence that iodobikinin and bikinin are inactivated in planta by conjugation with glutamic acid or malic acid and that the latter process is catalysed by the malate transferase SNG1. Conclusion Brassinosteroids participate in regulation of many aspects of plant development and in responses to environmental cues. Thus compounds modulating their action are valuable tools to study such processes and may be an interesting opportunity to modify plant growth and performance in horticulture and agronomy. Here we report the development of bikinin derivatives with increased potency that can activate BR signalling and mimic BR action. Methyliodobikinin was 3.4 times more active in vivo than bikinin. The main reason for the superior activity of methyliodobikinin, the most potent compound, is its enhanced plant tissue permeability. Inactivation of bikinin and its derivatives in planta involves SNG1, which constitutes a novel pathway for modification of xenobiotic compounds. PMID:24947596

2014-01-01

73

Equacions diferencials de primer ordre Una equacio diferencial de primer ordre es una expressio F(x, y, y) = 0. De vegades la podem trobar  

E-print Network

CAP´iTOL 3 Equacions diferencials de primer ordre Una equaci´o diferencial de primer ordre ´es una DIFERENCIALS DE PRIMER ORDRE y 4 2 0 -2 -4 x 420-2-4 Figura 1. Solucions de xy = 1 y 4 2 0 -2 -4 x 420. Solucions particulars Hem vist que les solucions d'una equaci´o diferencial de primer ordre sovint formen

Broto, Carles

74

Hígado Graso no Alcohólico: una entidad cada vez más frecuente y de pronóstico incierto  

Microsoft Academic Search

RESUMEN La enfermedad de hígado graso no alcohólica, en inglés non alcoholic fatty liver disease (NAFLD), es definida como una acumulación excesiva de grasa en los hepatocitos. Presenta una prevalencia mundial de alrededor del 15 al 25%. Los factores de riesgo asociados frecuentemente a NAFLD son obesidad, diabetes tipo 2 y dislipemia. Por un lado se ha propuesto que una

Andrea Mariel Actis

75

Efecto del estrés abiótico sobre la síntesis y degradación de almidón. Una revisión Effect of abiotic stress on starch synthesis and degradation. A review  

Microsoft Academic Search

En las plantas superiores la biosíntesis del almidón es sensible al efecto de condiciones ambientales adversas, las cuales actúan sobre el suministro de carbohidratos desde los órganos fuente, la actividad de los vertederos y de las enzimas biosintéticas asociadas. Mediciones de la planta entera in vivo han demos- trado que la tasa de flujo de carbono depende además de las

Adriana Tofiño; Hernán Mauricio Romero; Hernán Ceballos

2007-01-01

76

Characterization of a highly repeated DNA sequence (SC1) from the arbuscular mycorrhizal fungus Scutellospora castanea and its detection in planta.  

PubMed Central

A highly repeated DNA sequence from the genome of an arbuscular mycorrhizal fungus has been isolated and characterized. This 1,202-bp sequence (SC1) represents about 0.24% of the Scutellospora castanea genome, estimated to be 1 pg by flow cytometry. The sequence was shown to be a Scutellospora-specific probe in Southern blots and dot blot hybridizations. After complete sequencing of SC1, PCR primers were generated and used to amplify a 907-bp fragment from spores of S. castanea or from colonized Allium porrum roots. No amplification products were obtained with DNA from either spores or mycorrhizal root of other species of arbuscular mycorrhizal fungi. These primers were sufficiently specific for unequivocal detection of S. castanea in planta. PMID:8779584

Zeze, A; Hosny, M; Gianinazzi-Pearson, V; Dulieu, H

1996-01-01

77

Forward genetic in planta screen for identification of plant-protective traits of Sphingomonas sp. strain Fr1 against Pseudomonas syringae DC3000.  

PubMed

Sphingomonas sp. strain Fr1 has recently been shown to protect Arabidopsis thaliana against the bacterial leaf pathogen Pseudomonas syringae DC3000. Here, we describe a forward genetic in planta screen to identify genes in Sphingomonas sp. Fr1 necessary for this effect. About 5,000 Sphingomonas sp. Fr1 mini-Tn5 mutants were assayed for a defect in plant protection against a luxCDABE-tagged P. syringae DC3000 derivative in a space-saving 24-well plate system. The bioluminescence of the pathogen was used as the indicator of pathogen proliferation and allowed for the identification of Sphingomonas sp. Fr1 mutants that had lost the ability to restrict pathogen growth before disease symptoms were visible. Potential candidates were validated using the same miniaturized experimental system. Of these mutants, 10 were confirmed as plant protection defective yet colonization competent. The mutants were subsequently evaluated in a previously described standard microbox system, and plants showed enhanced disease phenotypes after pathogen infection relative to those inoculated with the parental strain as a control. However, the disease severities were lower than those observed for control plants that were grown axenically prior to pathogen challenge, which suggests that several traits may contribute to plant protection. Transposon insertion sites of validated mutants with defects in plant protection were determined and mapped to 7 distinct genomic regions. In conclusion, the established screening protocol allowed us to identify mutations that affect plant protection, and it opens the possibility to uncover traits important for in planta microbe-microbe interactions. PMID:22660707

Vogel, Christine; Innerebner, Gerd; Zingg, Judith; Guder, Jan; Vorholt, Julia A

2012-08-01

78

DISTÚRBIOS NUTRICIONAIS INDUZIDOS PELA ADUBAÇÃO DE FÓSFORO E FERRO EM PLANTAS JOVENS DE GRÁPIA (Apuleia leiocarpa) NUTRITIONAL DISTURBANCE INDUCED BY PHOSPHORUS AND IRON FERTILIZATION ON YOUNG PLANTS OF GRÁPIA (Apuleia leiocarpa)  

Microsoft Academic Search

A grápia (Apuleia leiocarpa Vog. Macbride) é uma espécie florestal nativa de grande interesse madeireiro, encontrando-se, atualmente, bastante dizimada. Em trabalhos anteriores, foi observado que as folhas novas de plantas jovens de grápia apresentaram sintomas visuais indicativos de deficiência de Fe na presença de doses crescentes de P. O presente trabalho teve como objetivo caracterizar os efeitos da interação da

Evandro Luiz Missio; Fernando Teixeira Nicoloso

2005-01-01

79

Caratterizzazione di una famiglia di geni codificanti proteine formanti poro nel protozoo patogeno Trichomonas vaginalis.  

E-print Network

??Trichomonas vaginalis è un protozoo flagellato responsabile della tricomoniasi, una delle malattie a trasmissione sessuale più diffuse al mondo. L’infezione è caratterizzata da un importante… (more)

DIAZ, NICIA MARIA LUISA EUGENIA

2009-01-01

80

Reconexión magnética en una región activa en decaimiento  

NASA Astrophysics Data System (ADS)

Se han obtenido observaciones desde Tierra (H? y magnetogramas) coordinadas con el Soft X-ray Telescope (SXT), a bordo del satélite japonés Yohkoh, de una región activa bipolar en decaimiento. Estos datos constituyen la base para el estudio de un punto brillante en rayos X (PBX) y de la actividad relacionada con el mismo en distintas capas de la atmósfera solar. Las observaciones muestran que el PBX está relacionado con la aparición de un bipolo menor (~ 1020 Mx) y que su abrillantamiento continuo, así como sus aumentos de brillo esporádicos (``fulguraciones"), son el resultado de la reconexión entre el pequeño arco emergente (visto en H? como un sistema de filamentos arqueados, SFA) y arcos mayores asociados al campo facular preexistente. Se ha extrapolado el campo magnético observado en la aproximación libre de fuerzas lineal y se ha seguido su evolución a lo largo de la vida del PBX. Se ha calculado la posición de las cuasiseparatrices (CSs) a partir del campo modelado. Las líneas de campo extrapoladas, cuyas bases fotosféricas se encuentran a ambos lados de las CSs, están de acuerdo con las estructuras cromosféricas y coronales observadas. Se ha calculado el espesor de la CD ubicada a lo largo de la polaridad negativa emergente, encontrándose que su variación está de acuerdo con la evolución de la intensidad del PBX; la CS es muy delgada durante la vida del PBX (~ 100 m), mientras que su espesor aumenta considerablemente (>= 10^4 m) cuando el PBX desaparece de las imágenes del SXT. Estos resultados señalan que el abrillantamiento y las ``fulguraciones" de este PBX se deben al proceso de reconexión en 3D que tiene lugar en las CSs.

Mandrini, C. H.; Démoulin, P.; van Driel-Gesztelyi, L.; Schmieder, B.; Bagalá, L. G.; Rovira, M. G.

81

Dos médicos y una causa: Len Crome y Reginald Saxton en las Brigadas Internacionales  

Microsoft Academic Search

Una de las dimensiones más impresionantes, más duraderas y menos conocidas de las Brigadas Internacionales era la aportación de sus servidos médicos. Las aportaciones de los distintos médicos, españoles e internacionales, fueron de una importancia colosal en el desarrollo posterior de la medicina traumatològica, en guerra y en paz. Menos conocida fue la labor abnegada de conductores de ambulancias, enfermeras

Paul Preston

2004-01-01

82

Movilidad ocupacional de los inmigrantes en una economía de bajas cualificaciones. El caso de España  

Microsoft Academic Search

Esta investigación analiza la movilidad ocupacional de los inmigrantes entre sus países de origen y España, así como sus principales determinantes. La misma se basa en los microdatos de la Encuesta Nacional de Inmigrantes y el uso de una escala de estatus ocupacional de carácter internacional (ISEI). La evidencia muestra que, por lo general, los inmigrantes sufren una fuerte degradación

Hipólito Simón; Raul Ramos; Esteban Sanromá

2010-01-01

83

La cachama blanca (Piaractus brachypomus), una especie potencial para el mejoramiento genético  

Microsoft Academic Search

En Colombia, la piscicultura continental es una alternativa de seguridad alimentaria, que tiene un alto incremento (10% anual), considerándose especies como Tilapia (Oreochromis sp) y cachama blanca (Piaractus brachypomus), los dos renglones más importantes para su desarrollo. Aunque la cachama blanca es una especie en la cual se han realizado investigaciones que han demostrado su potencial zootécnico, gracias a características

Martha N Mesa-Granda; Mónica C Botero-Aguirre

84

Propostes temes del treball sobre ER Treball sobre una font d'energia renovable  

E-print Network

Propostes temes del treball sobre ER Treball sobre una font d'energia renovable Estudi de l'estat de desenvolupament, la implantaci´o i evoluci´o hist`orica d'u- na font d'energia renovable concreta: · Solar fotovoltaica · Solar trmica · Biocombustibiles · Elica Treball sobre una tecnologia espec

Batiste, Oriol

85

Una Evaluación Geográfica de la Política de Educación Media Superior de la Ciudad de México  

Microsoft Academic Search

En este trabajo presentamos una evaluación geográfica de la política de las preparatorias creadas y administradas por el gobierno de la ciudad de México. La revisión teórica y evaluación estadística realizadas nos ha permitido (1) construir relaciones explicativas útiles entre varios conceptos de teorías urbanas provenientes de escuelas divergentes, y de disciplinas diferentes, y a la vez (2) hacer una

LAURA CERVANTES-SALCIDO; CARLOS J. VILALTA-Y PERDOMO

2006-01-01

86

La pantnlIa especular: Una lectura metatextual. del cine de Alfdandro Amenábar  

Microsoft Academic Search

La carrera cinematográfica de Alejandro Amenábar ha tenido recientemente una gran proyección debido al lanzamiento internacional de The Others. Aunque sus filmes anteriores ya habían disfrutado de una favorable acogida entre el público español. su consagración mundial se ha producido como resultado de laampl1a distribución comercial de su última obra Este éxito popular, sin embargo. no ha conllevado un reconocimiento

Santiago Juan Navarro

87

Laser Photoacoustic Detection Allows in Planta Detection of Nitric Oxide in Tobacco following Challenge with Avirulent and Virulent Pseudomonas syringae Pathovars1  

PubMed Central

We demonstrate the use of laser photoacoustic detection (LPAD) as a highly sensitive method to detect in planta nitric oxide (.NO) production from tobacco (Nicotiana tabacum). LPAD calibration against .NO gas demonstrated a linear relationship over 2 orders of magnitude with a detection threshold of <20 pmol h?1 (1 part per billion volume [ppbv]). The specificity of the photoacoustic signal for .NO when adding gas or the .NO donor, sodium nitroprusside, on injection into plant leaves, was demonstrated by its abolition with O3 (.NO + O3 ? NO2 + O2). The utility of the LPAD method was shown by examination of a nonhost hypersensitive response and a disease induced by Pseudomonas syringae (P. s.) pv phaseolicola and P. s. pv tabaci in tobacco. .NO was detected within 40 min of challenge with P. s. pv phaseolicola, some 5 h before the initiation of visible tissue collapse. The wildfire tobacco pathogen P. s. pv tabaci initiated .NO generation at 2 h postinfection. The use of .NO donors, the scavenger CPTIO ([4-carboxyphenyl]-4,5-dihydro-4,4,5,5-tetramethyl-3-oxide), and the mammalian nitric oxide synthase inhibitor l-NMMA (NG-monomethyl-l-arginine) indicated that .NO influenced the kinetics of cell death and resistance to both avirulent and virulent bacteria in tobacco. These observations suggest that .NO is integral to the elicitation of cell death associated with these two bacterial pathogens in tobacco. PMID:16009999

Mur, Luis A.J.; Santosa, I. Edi; Laarhoven, Lucas J.J.; Holton, Nicholas J.; Harren, Frans J.M.; Smith, Aileen R.

2005-01-01

88

Arabidopsis DAYU/ABERRANT PEROXISOME MORPHOLOGY9 is a key regulator of peroxisome biogenesis and plays critical roles during pollen maturation and germination in planta.  

PubMed

Pollen undergo a maturation process to sustain pollen viability and prepare them for germination. Molecular mechanisms controlling these processes remain largely unknown. Here, we report an Arabidopsis thaliana mutant, dayu (dau), which impairs pollen maturation and in vivo germination. Molecular analysis indicated that DAU encodes the peroxisomal membrane protein ABERRANT PEROXISOME MORPHOLOGY9 (APEM9). DAU is transiently expressed from bicellular pollen to mature pollen during male gametogenesis. DAU interacts with peroxisomal membrane proteins PEROXIN13 (PEX13) and PEX16 in planta. Consistently, both peroxisome biogenesis and peroxisome protein import are impaired in dau pollen. In addition, the jasmonic acid (JA) level is significantly decreased in dau pollen, and the dau mutant phenotype is partially rescued by exogenous application of JA, indicating that the male sterility is mainly due to JA deficiency. In addition, the phenotypic survey of peroxin mutants indicates that the PEXs most likely play different roles in pollen germination. Taken together, these data indicate that DAU/APEM9 plays critical roles in peroxisome biogenesis and function, which is essential for JA production and pollen maturation and germination. PMID:24510720

Li, Xin-Ran; Li, Hong-Ju; Yuan, Li; Liu, Man; Shi, Dong-Qiao; Liu, Jie; Yang, Wei-Cai

2014-02-01

89

In Planta Stage-Specific Fungal Gene Profiling Elucidates the Molecular Strategies of Fusarium graminearum Growing inside Wheat Coleoptiles[W][OA  

PubMed Central

The ascomycete Fusarium graminearum is a destructive fungal pathogen of wheat (Triticum aestivum). To better understand how this pathogen proliferates within the host plant, we tracked pathogen growth inside wheat coleoptiles and then examined pathogen gene expression inside wheat coleoptiles at 16, 40, and 64 h after inoculation (HAI) using laser capture microdissection and microarray analysis. We identified 344 genes that were preferentially expressed during invasive growth in planta. Gene expression profiles for 134 putative plant cell wall–degrading enzyme genes suggest that there was limited cell wall degradation at 16 HAI and extensive degradation at 64 HAI. Expression profiles for genes encoding reactive oxygen species (ROS)–related enzymes suggest that F. graminearum primarily scavenges extracellular ROS before a later burst of extracellular ROS is produced by F. graminearum enzymes. Expression patterns of genes involved in primary metabolic pathways suggest that F. graminearum relies on the glyoxylate cycle at an early stage of plant infection. A secondary metabolite biosynthesis gene cluster was specifically induced at 64 HAI and was required for virulence. Our results indicate that F. graminearum initiates infection of coleoptiles using covert penetration strategies and switches to overt cellular destruction of tissues at an advanced stage of infection. PMID:23266949

Zhang, Xiao-Wei; Jia, Lei-Jie; Zhang, Yan; Jiang, Gang; Li, Xuan; Zhang, Dong; Tang, Wei-Hua

2012-01-01

90

Regulation of Rhizobium meliloti exo genes in free-living cells and in planta examined by using TnphoA fusions.  

PubMed Central

The exo loci of Rhizobium meliloti are necessary for the production of an acidic exopolysaccharide, EPS I, that is needed for alfalfa nodule invasion by strain Rm1021. We have isolated and characterized alkaline phosphatase fusions made with TnphoA in several exo loci of R. meliloti and used these fusions to examine the subcellular localization of exo gene products and the regulation of exo genes in free-living cells and in planta. In the course of this work, we isolated a new exo locus, exoT. We have obtained evidence that several of the exo loci may encode membrane proteins. The activity of TnphoA fusions in several exo loci is increased two- to fivefold in the presence of the regulatory mutations exoR95 and exoS96. While examining the regulation of the exo gens by exoR95 and exoS96, we found that certain classes of exo mutations are lethal in an exoR95 or exoS96 background unless a plasmid complementing the exo mutation is present. This result has possible implications for the role of these exo loci in EPS I biosynthesis. We have developed a method for staining nodules specifically for the alkaline phosphatase activity present in the inducing bacteria and used this method to show that an exoF::TnphoA fusion is expressed mainly in the invasion zone of the nodule. Images PMID:1846141

Reuber, T L; Long, S; Walker, G C

1991-01-01

91

Regulation of Rhizobium meliloti exo genes in free-living cells and in planta examined by using TnphoA fusions.  

PubMed

The exo loci of Rhizobium meliloti are necessary for the production of an acidic exopolysaccharide, EPS I, that is needed for alfalfa nodule invasion by strain Rm1021. We have isolated and characterized alkaline phosphatase fusions made with TnphoA in several exo loci of R. meliloti and used these fusions to examine the subcellular localization of exo gene products and the regulation of exo genes in free-living cells and in planta. In the course of this work, we isolated a new exo locus, exoT. We have obtained evidence that several of the exo loci may encode membrane proteins. The activity of TnphoA fusions in several exo loci is increased two- to fivefold in the presence of the regulatory mutations exoR95 and exoS96. While examining the regulation of the exo gens by exoR95 and exoS96, we found that certain classes of exo mutations are lethal in an exoR95 or exoS96 background unless a plasmid complementing the exo mutation is present. This result has possible implications for the role of these exo loci in EPS I biosynthesis. We have developed a method for staining nodules specifically for the alkaline phosphatase activity present in the inducing bacteria and used this method to show that an exoF::TnphoA fusion is expressed mainly in the invasion zone of the nodule. PMID:1846141

Reuber, T L; Long, S; Walker, G C

1991-01-01

92

Colonization process of olive tissues by Verticillium dahliae and its in planta interaction with the biocontrol root endophyte Pseudomonas fluorescens PICF7  

PubMed Central

Summary The colonization process of Olea europaea by the defoliating pathotype of Verticillium dahliae, and the in planta interaction with the endophytic, biocontrol strain Pseudomonas fluorescens PICF7 were determined. Differential fluorescent protein tagging was used for the simultaneous visualization of P. fluorescens PICF7 and V. dahliae in olive tissues. Olive plants were bacterized with PICF7 and then transferred to V. dahliae?infested soil. Monitoring olive colonization events by V. dahliae and its interaction with PICF7 was conducted using a non?gnotobiotic system, confocal laser scanner microscopy and tissue vibratoming sections. A yellow fluorescently tagged V. dahliae derivative (VDAT?36I) was obtained by Agrobacterium tumefaciens?mediated transformation. Isolate VDAT?36I quickly colonized olive root surface, successfully invaded root cortex and vascular tissues via macro? and micro?breakages, and progressed to the aerial parts of the plant through xylem vessel cells. Strain PICF7 used root hairs as preferred penetration site, and once established on/in root tissues, hindered pathogen colonization. For the first time using this approach, the entire colonization process of a woody plant by V. dahliae is reported. Early and localized root surface and root endophytic colonization by P. fluorescens PICF7 is needed to impair full progress of verticillium wilt epidemics in olive. PMID:21255281

Prieto, Pilar; Navarro-Raya, Carmen; Valverde-Corredor, Antonio; Amyotte, Stefan G.; Dobinson, Katherine F.; Mercado-Blanco, Jesus

2009-01-01

93

In vitro but not in planta encapsidation of Rice gall dwarf virus core particles by the outer capsid P8 protein of Rice dwarf virus expressed in transgenic rice plants  

Microsoft Academic Search

Transencapsidation of the Rice gall dwarf virus (RGDV) inner core by the Rice dwarf virus (RDV) outer capsid P8 protein was examined in vitro and in planta. When RGDV core particles were incubated with an extract\\u000a from RDV P8-transgenic rice leaf tissue, RDV P8 encapsidated the RGDV core particles to form double-shelled virus-like particles\\u000a in vitro. In contrast, when RDV

Kyoji Hagiwara; Takahiko Higashi; Kazunari Takahashi; Naho Hara; Hideyuki Aoki; Naoyuki Miyazaki; Qing-Yu Wang; Yafeng Zhu; Osamu Yatou; Hiroshi Tanaka; Toshihiro Omura

2006-01-01

94

Una propuesta para el desarrollo de un arreglo de síntesis de apertura  

NASA Astrophysics Data System (ADS)

Los estudios llevados a cabo en la transición del hidrógeno neutro a ?~21-cm han contribuído a incrementar nuestro conocimiento acerca de las propiedades globales del medio interestelar, sea este galáctico o extragaláctico. Avances en este campo han sido provocados, a menudo, por la puesta en servicio de radiotelescopios que poseen una mayor resolución angular. Aquí se presenta una propuesta para desarrollar un nuevo instrumento, un interferómetro, que permitirá abrir nuevas líneas de investigación. Este instrumento combinará la técnica de síntesis de apertura con la de espectroscopía de correlación digital, para alcanzar una resolución angular de 1' y un campo de visión de ~1o.7.

Arnal, E. M.

95

Pedofilia e pedopornografia online: una ricerca socio-criminologica nella realtà italiana e francese.  

E-print Network

??Una delle realtà criminali che ha maggiormente fruito delle innovazioni introdotte dalla “società dell’Informazione” è, senza dubbio, quella dell’abuso sessuale sui minori. Tra le differenti… (more)

Macilotti, Giorgia and#60;1983and#62

2012-01-01

96

Gulliver dormido de Samuel Rovinski: Una parodia del discurso del poder  

E-print Network

resto de nuestra sufrida Centroamérica, los extremistas de izquierda y derecha se enfrascan en una sanguinaria lucha fratricida, en nuestra querida Patria, que flota como un remanso de paz en medio de la vorágine guerrera, (4) hemos recibido con...

Rojas, Mario A.

1990-10-01

97

Cmo asar a la parrilla de una manera segura Asar alimentos a la parrilla es una manera divertida de cocinar para la familia y los amigos. Aunque muchas  

E-print Network

Escoja carne, carne de ave o mariscos que sean frescos y de alta calidad. Una vez que la compre hielera portátil. Cocine o congele la carne de ave, el pescado, los mariscos o la carne de res molida carne, el pescado, la carne de ave o los mariscos en el refrigerador. Esto permite que la carne se

98

La Universidad de Alicante favorece el encuentro entre ingenieria y medicina para una sanidad ms exigente  

E-print Network

La Universidad de Alicante favorece el encuentro entre ingenieria y medicina para una sanidad más exigente Alicante, 13 de marzo de 2012 Favorecer el desarrollo mutuo de la ingeniería y la medicina en una la Salud, se celebrará a partir de mañana miércoles en la Universidad de Alicante. Organizado por su

Escolano, Francisco

99

Sulla Probabilità Termodinamica di Stato di una Massa D’aria  

Microsoft Academic Search

Sunto  L’A., applicando il concetto di probabilità termodinamica ad una massa d’aria e ricollegandosi al fatto che l’annullarsi dell’entropia\\u000a non si verifica soltanto allo zero assoluto, ma in un intervallo dipendente dalla sostanza in questione ed avente come estremo\\u000a inferiore lo zero assoluto, esprime la probabilità termodinamica di una massa d’aria atmosferica. Scrive anche due formule\\u000a relative, rispettivamente, alla temperatura Potenziale

Antonio Pignedoli

1942-01-01

100

Boosting In Planta Production of Antigens Derived from the Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) and Subsequent Evaluation of Their Immunogenicity  

PubMed Central

Porcine reproductive and respiratory syndrome (PRRS) is a disease of swine, caused by an arterivirus, the PRRS virus (PRRSV). This virus infects pigs worldwide and causes huge economic losses. Due to genetic drift, current vaccines are losing their power. Adaptable vaccines could provide a solution to this problem. This study aims at producing in planta a set of antigens derived from the PRRSV glycoproteins (GPs) to be included in a subunit vaccine. We selected the GP3, GP4 and GP5 and optimized these for production in an Arabidopsis seed platform by removing transmembrane domains (Tm) and/or adding stabilizing protein domains, such as the green fluorescent protein (GFP) and immunoglobulin (IgG) ‘Fragment crystallizable’ (Fc) chains. Accumulation of the GPs with and without Tm was low, reaching no more than 0.10% of total soluble protein (TSP) in homozygous seed. However, addition of stabilizing domains boosted accumulation up to a maximum of 2.74% of TSP when GFP was used, and albeit less effectively, also the Fc chains of the porcine IgG3 and murine IgG2a increased antigen accumulation, to 0.96% and 1.81% of TSP respectively, while the murine IgG3 Fc chain did not. Antigens with Tm were less susceptible to these manipulations to increase yield. All antigens were produced in the endoplasmic reticulum and accordingly, they carried high-mannose N-glycans. The immunogenicity of several of those antigens was assessed and we show that vaccination with purified antigens did elicit the production of antibodies with virus neutralizing activity in mice but not in pigs. PMID:24614617

Piron, Robin; De Koker, Stefaan; De Paepe, Annelies; Goossens, Julie; Grooten, Johan; Nauwynck, Hans; Depicker, Ann

2014-01-01

101

Salinity-induced accumulation of organic osmolytes in barley and wheat leaves correlates with increased oxidative stress tolerance: In planta evidence for cross-tolerance.  

PubMed

Salinity tolerance in plants is dependent on their abilities to adjust osmotically to reduced soil water potential and to keep intracellular ROS levels under control. Both these processes are believed to rely on de novo synthesis of organic osmolytes (traditionally defined as compatible solutes). However direct in planta evidence for anti-oxidant roles of compatible solutes are scarce. In this work, we induced changes in the level of endogenous organic osmolytes by exposing plants to various levels of NaCl (salinity stress; 50-300 mM range) and then studying sensitivity of leaves to oxidative (UV-B) stress. Increase in the external NaCl concentrations was accompanied by the progressive accumulation in leaf Na(+). This accumulation was much higher in old leaves compared with young ones. In old leaves, three major inorganic ions (Na(+), Cl(-) and K(+)) have made 67.7% and 70.4% of leaf osmotic potential (in wheat and barley, respectively) when exposed to 200 mM NaCl treatment, while in young leaves their contribution was only 43.9% and 46.8%, respectively. Here, organic osmolytes played a substantial role in leaf osmotic adjustment. Increased accumulation of organic osmolytes correlated strongly with activity of PSII in leaves exposed to oxidation inducing UV-B treatment in both species (R(2) = 0.50 for wheat and 0.71 for barley). We conclude that salinity-induced accumulation of organic osmolytes in barley and wheat leaves correlates with increased oxidative stress tolerance and provides the evidence for a mechanism of cross-tolerance between these two stresses. PMID:25068241

Puniran-Hartley, Norhawa; Hartley, Joseph; Shabala, Lana; Shabala, Sergey

2014-10-01

102

A ubiquitin carboxyl extension protein secreted from a plant-parasitic nematode Globodera rostochiensis is cleaved in planta to promote plant parasitism.  

PubMed

Nematode effector proteins originating from esophageal gland cells play central roles in suppressing plant defenses and in formation of the plant feeding cells that are required for growth and development of cyst nematodes. A gene (GrUBCEP12) encoding a unique ubiquitin carboxyl extension protein (UBCEP) that consists of a signal peptide for secretion, a mono-ubiquitin domain, and a 12 amino acid carboxyl extension protein (CEP12) domain was cloned from the potato cyst nematode Globodera rostochiensis. This GrUBCEP12 gene was expressed exclusively within the nematode's dorsal esophageal gland cell, and was up-regulated in the parasitic second-stage juvenile, correlating with the time when feeding cell formation is initiated. We showed that specific GrUBCEP12 knockdown via RNA interference reduced nematode parasitic success, and that over-expression of the secreted Gr(?) (SP) UBCEP12 protein in potato resulted in increased nematode susceptibility, providing direct evidence that this secreted effector is involved in plant parasitism. Using transient expression assays in Nicotiana benthamiana, we found that Gr(?) (SP) UBCEP12 is processed into free ubiquitin and a CEP12 peptide (GrCEP12) in planta, and that GrCEP12 suppresses resistance gene-mediated cell death. A target search showed that expression of RPN2a, a gene encoding a subunit of the 26S proteasome, was dramatically suppressed in Gr(?) (SP) UBCEP12 but not GrCEP12 over-expression plants when compared with control plants. Together, these results suggest that, when delivered into host plant cells, Gr(?) (SP) UBCEP12 becomes two functional units, one acting to suppress plant immunity and the other potentially affecting the host 26S proteasome, to promote feeding cell formation. PMID:23346875

Chronis, Demosthenis; Chen, Shiyan; Lu, Shunwen; Hewezi, Tarek; Carpenter, Sara C D; Loria, Rosemary; Baum, Thomas J; Wang, Xiaohong

2013-04-01

103

Differential subcellular targeting of recombinant human ??-proteinase inhibitor influences yield, biological activity and in planta stability of the protein in transgenic tomato plants.  

PubMed

The response of protein accumulation site on yield, biological activity and in planta stability of therapeutic recombinant human proteinase inhibitor (??-PI) was analyzed via targeting to different subcellular locations, like endoplasmic reticulum (ER), apoplast, vacuole and cytosol in leaves of transgenic tomato plants. In situ localization of the recombinant ??-PI protein in transgenic plant cells was monitored by immunohistochemical staining. Maximum accumulation of recombinant ??-PI in T? and T? transgenic tomato plants was achieved from 1.5 to 3.2% of total soluble protein (TSP) by retention in ER lumen, followed by vacuole and apoplast, whereas cytosolic targeting resulted into degradation of the protein. The plant-derived recombinant ??-PI showed biological activity for elastase inhibition, as monitored by residual porcine pancreatic elastase (PPE) activity assay and band-shift assay. Recombinant ??-PI was purified from transgenic tomato plants with high yield, homogeneity and biological activity. Purified protein appeared as a single band of ?48-50 kDa on SDS-PAGE with pI value ranging between 5.1 and 5.3. Results of mass spectrometry and optical spectroscopy of purified recombinant ??-PI revealed the structural integrity of the recombinant protein comparable to native serum ??-PI. Enzymatic deglycosylation and lectin-binding assays with the purified recombinant ??-PI showed compartment-specific N-glycosylation of the protein targeted to ER, apoplast and vacuole. Conformational studies based on urea-induced denaturation and circular dichroism (CD) spectroscopy revealed relatively lower stability of the recombinant ??-PI protein, compared to its serum counterpart. Pharmacokinetic evaluation of plant derived recombinant and human plasma-purified ??-PI in rat, by intravenous route, revealed significantly faster plasma clearance and lower area under curve (AUC) of recombinant protein. Our data suggested significance of protein sorting sequences and feasibility to use transgenic plants for the production of stable, glycosylated and biologically active recombinant ??-PI for further therapeutic applications. PMID:23017899

Jha, Shweta; Agarwal, Saurabh; Sanyal, Indraneel; Jain, G K; Amla, D V

2012-11-01

104

Kingdom Plantae Douglas firs (left);  

E-print Network

green algae Both have chlorophyll a 4 major innovations Multicellularity Vascular tissue Seeds Flowers greatly increased fertilization success Possess lignin and vascular tissue Possess seeds Sporophyte

Brown, Christopher A.

105

Esercizi 23.01.2008 1. (a) Sia V uno spazio lineare e B = {v1, .., vn} una base di V . Sia T : V V una trasformazione lineare  

E-print Network

lineare tale che la j-esima colonna di mB B(T) `e tEj (dove t R e Ej `e il versore del j-esimo asse coordinato, visto come vettore colonna). Chi `e T(vj)? 3. Sia V uno spazio lineare e B = {v1, .., vn} una W di V5 tale che dim W = 4 e dim T(W) = 3 (g) Esistono sottospazi vettoriali W di V5 tale che dim W

Pareschi, Giuseppe

106

Una dulce bondad que atempera las crueldades: El campo de Griselda Gambaro  

E-print Network

de Emma se manifiesta físicamente en una incontrolable picazón en la piel. Al final del drama, cuando Franco deja que partan Martín y Emma para la casa de aquél, la espuria libertad se trueca en el acoso de ellos, SUMMER 1980 97 "tiernamente... miti gador predomina: "lo sostienen con una especie de bondad, uno de ellos saca un pañuelo del bolsillo y le seca el sudor de la cara. . . " (p. 101). Emma no se defiende contra los abusos, sino que sucumbe miedosa y dolo- rosamente. En cambio...

Picó n Garfield, Evelyn

1980-07-01

107

Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos  

E-print Network

FALL 1996 89 Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos Pedro Bravo-Elizondo A la fecha, su vida contempla un título como teatrista por la Universidad Católica de Chile en la cual es profesora en la Escuela de...

Bravo-Elizondo, Pedro

1996-10-01

108

EFFETTO DEL RICICLO MECCANICO SULLA RESISTENZA A FATICA DI UNA POLIAMMIDE RINFORZATA CON FIBRE DI VETRO  

Microsoft Academic Search

Sommario Il riciclo meccanico dei materiali compositi a matrice termoplastica rinforzati con fibre corte di vetro permette di recuperare sia materiale dismesso a fine vita sia gli scarti industriali di lavorazione. Esso consiste nella macinazione e successivo impiego del materiale macinato nel processo di stampaggio a iniezione. In questa memoria viene presentato lo studio del comportamento a fatica di una

A. Bernasconi; P. Davoli; D. Rossin

109

Reinventando Kelowna: jubilaciones, tecnología, vino y turismo en una ciudad del hinterland de Canadá  

Microsoft Academic Search

En esta trabajo analizamos la transformación de Kelowna, una ciudad de 150 mil habitantes en el valle del Okanagan en el interior de la provincia de la Colombia Británica en Canadá, bajo el impacto del constante cambio que impone el neoliberalismo a ciudades y regiones. Estudiamos los esfuerzos históricos de los grupos dominantes locales en hacer la ciudad competitiva –

Patricia Tomic; Ricardo Trumper; Luis Aguiar

2007-01-01

110

MOTIVACIONES MEDIOAMBIENTALES DEL TURISTA EN UNA CIUDAD PATRIMONIO DE LA HUMANIDAD  

Microsoft Academic Search

En la actualidad, el turismo es uno de los mayores y más dinámicos sectores de la actividad económica. Afecta a varios sectores de la economía, lo que contribuye positivamente al desarrollo social y económico de la comunidad. Sin embargo, existe una serie de aspectos negativos de la actividad turística, como sus impactos medioambientales. Por ello, las nuevas tendencias en desarrollo

José Mondéjar Jiménez; Juan Carlos Gázquez Abad; José Felipe Jiménez Guerrero

2009-01-01

111

Hacia una Estrategia de Desarrollo para la Sierra Rural en el Perú  

Microsoft Academic Search

El objetivo de este proyecto es elaborar un documento que establezca los lineamientos de una política de desarrollo para la Sierra rural en el Perú e identificar los requerimientos institucionales y de investigación complementaria que se requerirían para la construcción de programas específicos que atiendan de la manera más eficiente la problemática de la pobreza en esta región. El documento

J. A. Escobal; L. Valdivia

2004-01-01

112

Cultivating "Una Persona Educada: A Sentipensante" (Sensing/Thinking) Vision of Education  

ERIC Educational Resources Information Center

This essay focuses on the need to educate the new "persona educada", a dignified, honorable person with a good measure of social and personal responsibility who also possesses the habits of the mind and heart. To cultivate "una persona educada" requires a newly formed vision of education and pedagogy. Examples of three entrenched agreements that…

Rendon, Laura I.

2011-01-01

113

Aparición de resistencia a herbicidas, en una población de malezas  

NSDL National Science Digital Library

El uso repetido del mismo herbicida, puede provocar poblaciones de malezas que consisten de biotipos susceptibles (S) que son controlados y biotipos resistentes (R), que escapan al control para producir y retornar semilla con la característica de resistencia, al banco de semillas del suelo. Esta lección se enfocará en la dinámica poblacional de una población de malezas mezclada con biotipos S y R. Se comparará y contrastará la tasa a la que aparecen malezas resistentes en una población bajo diversas presiones de selección. ****** Esta lección se enfocará en la dinámica poblacional de una población mezclada (biotipos susceptibles y resistentes a un herbicida), y comparar y contrastar la tasa a la cual aparece resistencia al herbicida, en una población de malezas mezclada, bajo diversas presiones de selección.

114

L'economia del Veneto: cronaca di una crisi annunciata Tiziano Tempesta  

E-print Network

1 L'economia del Veneto: cronaca di una crisi annunciata Tiziano Tempesta Dipartimento Territorio e oramai analizzati da molto tempo dall'economia. Chiarito quindi che il PIL non può in alcun modo essere) dal 1970 al 2007. Come si può notare l'economia è cresciuta fortemente durante gli anni '70 periodo

Tempesta, Tiziano

115

Modelización de problemas de ordenación forestal con múltiples criterios. Una aplicación a la economía forestal cubana  

Microsoft Academic Search

Los bosques cubanos han sido objeto de un explotación indiscriminada durante muchos años, lo que ha provocado que se estén realizando grandes esfuerzos por el restablecimiento de los mismos y que se tienda a posiciones conservacionistas que provocan el envejecimiento de las masas. Como consecuencia de esta situación, tales bosques presentan una composición por edades desequilibrada. Así, en este trabajo

R. CABALLERO; T. GÓMEZ; J. MOLINA

2003-01-01

116

Nuevo gobierno de cambio en México ¿Una nueva política de información?  

Microsoft Academic Search

La ponencia trata de describir cual ha sido la política de información en México en los últimos años, pero se enfoca en los cambios que se están tratando de implementar en el actual régimen gubernamental. Se describen los principales proyectos, poniendo especial atención en el proyecto e- México, con el que el gobierno federal pretende crear una infraestructura nacional para

Jesús Cortés

117

ECONOMÍA SUBTERRÁNEA EN COLOMBIA 1976-2003: UNA MEDICIÓN A PARTIR DE LA DEMANDA DE EFECTIVO  

Microsoft Academic Search

La economía subterránea (ES), definida ampliamente como aquella asociada con actividades al margen del código legal de un país, es de particular relevancia en Colombia debido al alcance que tiene la economía del narcotráfico y la economía informal evasora de la legislación fiscal y laboral. Esto es particularmente relevante no solo para el Banco Central, pues la ES tiene una

Carlos Arango A; Martha Misas A; Enrique López

2005-01-01

118

ESERCIZI SULLE PROBABILIT`A DISCRETE (1) Dimostrare che non `e possibile definire una probabilit`a su N tale che tutti  

E-print Network

. Uno dei mobili contiene una moneta d'oro in ciascun cassetto; un altro ne contiene una d'argento in ciascun cassetto; infine il terzo mobile ha una moneta d'oro in un cassetto e una d'argento nell'altro. Apro un cassetto a caso e vi trovo una moneta d'oro: qual `e la probabilit`a che anche l'altro cassetto

Bertacchi, Daniela

119

El libro de Robin Cavagnoud es el resultado de una trayectoria de investigaciones en dos continentes: Europa y Amrica. Es tambin el resultado de una gran curiosidad e inters  

E-print Network

PREFACIO El libro de Robin Cavagnoud es el resultado de una trayectoria de investigaciones en dos muestran en este libro, basado en una encuesta de varios años en los barrios populares de Lima, con un análisis teórico e interpretativo de gran interés. El libro presenta un texto muy rico, agradable de leer

Paris-Sud XI, Université de

120

la colonna dei termini noti. `E chiaro che M `e una matrice m (n + 1). Si prova il seguente risultato  

E-print Network

la colonna dei termini noti. `E chiaro che M `e una matrice m � (n + 1). Si prova il seguente, . . . , xn = 0. 4. Spazi Vettoriali. Un gruppo commutativo (abeliano) `e un insieme G con una operazione) Propriet´a commutativa. 25 #12;c) Esiste un elemento g G tale che a + g = g + a = a per ogni a G. d) Per

Robbiano, Lorenzo

121

Aplicación de una heurística de búsqueda tabú en un problema de programación de tareas en línea flexible de manufactura  

Microsoft Academic Search

Una de las preocupaciones claves en el proceso de toma de decisiones para la solución de problemas de programación de tareas, consiste en lograr el adecuado balance entre calidad de la solución y complejidad o costo de la técnica usada. En este trabajo se propone una metodología basada en búsqueda tabú que permite obtener soluciones aceptables a un problema de

R. B Acero; J. F Torres

122

Observaciones del disco solar y de una protuberancia quiescente en radiación ultravioleta  

NASA Astrophysics Data System (ADS)

Observaciones del disco solar y de una protuberancia quiescente en el rango de longitudes de onda ultravioleta fueron obtenidas con el instrumento CDS (Coronal Diagnostic Spectrograph) y SUMER (Solar Ultraviolet Measurements of emitted radiation) a bordo de la sonda SOHO. El propósito es investigar las velocidades macroscópicas de varias especies metálicas que se observan tanto en el disco solar como en el plasma de las protuberancias. Para calcular las velocidades del disco solar aplicamos una técnica mixta para modelar la distribución de estructuras en UV en el Sol quieto. Las velocidades macroscópicas en las protuberancias se calcularon a partir de los corrimientos Doppler en cada línea espectral y luego se tomaron las del disco solar como referencia. Obtuvimos valores absolutos para las velocidades macroscópicas entre 5 y 40 km/seg. También detectamos comportamientos diferentes en las velocidades de las protuberancias en el centro con respecto a los bordes.

Cirigliano, D.; Vial, J.-C.; Rovira, M.

123

Determinantes Determinantes de matrices cuadradas. El determinante de una matriz cuadrada se puede definir  

E-print Network

definir recursivamente mediante desarrollos por columnas o por filas. Sea A = (aij) una matriz n � n, donde i es el ´indice de la fila y j es el ´indice de la columna. Notamos por Aij la matriz (n - 1) � (n - 1) que se obtiene al quitar la fila i y la columna j de la matriz A. Entonces Desarrollo por la fila

Ramírez-Ros, Rafael

124

Additional lichens and some lichenicolous fungi from the Una National Park (Bosnia and Herzegovina).  

PubMed

A list of 62 taxa (61 species) of lichens and 7 species of lichenicolous fungi from the Una National Park in the north-western part of Bosnia and Herzegovina is presented. The lichens Caloplaca crenulatella, Dimerella pineti, Lecanora expallens, Lopadium disciforme, Placynthiella icmalea, Toninia athallina and the lichenicolous fungi Abrothallus bertianus, A. parmeliarum, Cornutispora lichenicola, Endococcus rugulosus, and Sphaerellothecium parmeliae are new to Bosnia and Herzegovina. PMID:22102780

Bilovitz, Peter O; Türk, Roman; Mayrhofer, Helmut

2010-09-15

125

Additional lichens and some lichenicolous fungi from the Una National Park (Bosnia and Herzegovina)  

PubMed Central

A list of 62 taxa (61 species) of lichens and 7 species of lichenicolous fungi from the Una National Park in the north-western part of Bosnia and Herzegovina is presented. The lichens Caloplaca crenulatella, Dimerella pineti, Lecanora expallens, Lopadium disciforme, Placynthiella icmalea, Toninia athallina and the lichenicolous fungi Abrothallus bertianus, A. parmeliarum, Cornutispora lichenicola, Endococcus rugulosus, and Sphaerellothecium parmeliae are new to Bosnia and Herzegovina. PMID:22102780

Bilovitz, Peter O.; Turk, Roman; Mayrhofer, Helmut

2011-01-01

126

LA CONSTRUCCIN Y CONSOLIDACIN DE UNA PERCEPCIN SOCIAL EN LOS CONFLICTOS DEL AGUA EN ESPAA  

E-print Network

1 LA CONSTRUCCI�N Y CONSOLIDACI�N DE UNA PERCEPCI�N SOCIAL EN LOS CONFLICTOS DEL AGUA EN ESPA�A EL consolidando ideas, en este caso la de que las obras hidráulicas son la solución a los problemas del agua de comunicación, agua, percepción social, conflictos Introducción El presente estudio está basado en nuestro

Paris-Sud XI, Université de

127

BioViewMed, una herramienta visual de ayuda a la expansin de la cadena de bsqueda usando conocimiento semntico*  

E-print Network

a Freebase: Utilizamos la API que nos proporciona Freebase, en concreto, una consulta MQL de la información que necesitamos, en concreto obtenemos: Tratamientos, Causas, Factores de Riesgos, Síntomas y Personas

Escolano, Francisco

128

3. Sistemi ed equazioni differenziali lineari I sistemi e le equazioni differenziali lineari rivestono una notevole importanza sia dal  

E-print Network

costituiscono, infatti, sostanzialmente l'unica vasta classe di sistemi ed equazioni differenziali dei quali `e. Dal punto di vista fisico si osserva che una vasta classe di fenomeni, che vengono ap- punto detti

Gianazza, Ugo

129

consumidas. La superficie interna es lisa y de color amarillo cremoso. En el area central hay una serie de  

E-print Network

posee poros pero So1O en una parte del capullo (Evans, 1966). Enemigos naturales Hormigas [Pheidole megacephala (Fabr.)] acarrearon a su nido un macho de O. jamaica, posiblemente aca- bado de emerger. En

Mari-Mutt, José A.

130

'El teatro me ha dejado a mí': Una entrevista con Antón Arrufat"  

E-print Network

SPRING 1999 143 "El teatro me ha dejado a mí": Una entrevista con Antón Arrufat Nancy Christoph [Antón Arrufat nació en Santiago de Cuba en 1935. Además de ser dramaturgo, es poeta y narrador. Su obra dramática incluye: El cave se investiga... con el teatro. Hace años que no escribo teatro. Recibí muy males reacciones. El teatro me creó problemas de carácter político, y dejé de escribirlo.1 Era un género que escribía con mucha facilidad, y que me gustaba hacer. Es el que menos trabajo me...

Christoph, Nancy

1999-04-01

131

Investigadores de la UA y la UV obtienen una nueva lnea celular de retina para el cribado de frmacos neuroprotectores  

E-print Network

Investigadores de la UA y la UV obtienen una nueva línea celular de retina para el cribado de la Universidad de Valencia han obtenido una nueva línea celular de retina que permite evaluar la, obtenida a partir de un cultivo de células de Müller de retinas de ratones adultos, y es la única en el

Escolano, Francisco

132

TREBALL DE FI DE CARRERA TTOL DEL TFC: Desenvolupament d'una aplicaci HbbTV per a  

E-print Network

�n relativament altes respecte a anteriors intents degut principalment a que no es tracta d'una nova tecnologia correctament en tots. #12;#12;Title: Development of an HbbTV application for sport events Author: �lexTV application specific for sport events has been designed and implemented. It allows to enrich the TV

Yannuzzi Sanchez, Marcelo

133

Una mirada de la última Reforma de la Educación Argentina desde las Políticas de Cooperación Educativa de los Organismos Internacionales  

Microsoft Academic Search

El presente trabajo es una investigación cualitativa que indaga sobre la relación entre la agenda educativa de los organismos internacionales y la última reforma educativa en nuestro país mediante la técnica de estudio de caso. Con ese criterio, se expone un análisis del cambio educativo argentino identificando causas y consecuencias del fenómeno y advirtiendo el rol que adquirieron los principales

María Blanca Pesado Riccardi

134

La continuidad y el cambio de las migraciones entre México y Estados Unidos: una interpretación desde México  

Microsoft Academic Search

El tema de los movimientos de población entre países ha cobrado una importancia mayor tanto por el crecimiento numérico de los migrantes, como por las diversas implicaciones que ese fenómeno tiene desde varias perspectivas. A diferencia del pasado, al tema migratorio se le han añadido ahora otros que tienen que ver con los derechos humanos, laborales y civiles, además de

Gustavo Verduzco Igartúa

2005-01-01

135

La escritora iran Chahla Chafiq participa en la UA en la presentacin del libro Hacia una democracia rabe  

E-print Network

La escritora iraní Chahla Chafiq participa en la UA en la presentación del libro Hacia una libro publicado por la profesora Josefina Bueno. La obra publica por primera vez en español textos que "La biblioteca del ciudadano" que dirige Manuel Delgado, el libro recoge textos de cuatro mujeres

Escolano, Francisco

136

Genetic relationships among Mayaro and Una viruses suggest distinct patterns of transmission.  

PubMed

Mayaro and Una viruses (MAYV, UNAV) are mosquito-borne alphaviruses that may cause an acute febrile illness characterized by headache, retro-orbital pain, and rash that may progress to a severe and prolonged arthralgia. MAYV was first isolated in Trinidad in 1954, and UNAV was first identified in northern Brazil in 1959. Since then, numerous isolates of these agents have been made from humans, wild vertebrates, and mosquitoes in several countries in northern South America. Serological evidence suggests that these viruses are also present in portions of Central America. Because little is known about the natural transmission cycle of MAYV and virtually nothing is known about UNAV transmission, 63 isolates covering the known geographic and temporal ranges were used in phylogenetic analyses to aid in understanding the molecular epidemiology. Approximately 2 kb from the E1 and E2 glycoprotein genes and the complete 3' non-coding region were sequenced. Phylogenetic analyses of these sequences indicated that two distinct genotypes of MAYV exist with a distinct clade consisting exclusively of UNAV (previously designated as a subtype of MAYV). One MAYV genotype (genotype D) contains isolates from Trinidad and the northcentral portion of South America including Peru, French Guiana, Surinam, Brazil, and Bolivia. All of these isolates are highly conserved with a nucleotide divergence of < 6%. The second MAYV genotype (genotype L) contains isolates only from Brazil that are highly conserved (< 4% nucleotide divergence) but are quite distinct (15-19%) from the first genotype isolates. These analyses provide possible explanations for the natural ecology and transmission of MAYV and UNAV. PMID:16968922

Powers, Ann M; Aguilar, Patricia V; Chandler, Laura J; Brault, Aaron C; Meakins, Tiffany A; Watts, Douglas; Russell, Kevin L; Olson, James; Vasconcelos, Pedro F C; Da Rosa, Amelia Travassos; Weaver, Scott C; Tesh, Robert B

2006-09-01

137

Una transizione tra due vetri nella materia soffice I sistemi fisici sono composti da un numero molto grande di atomi o molecole che  

E-print Network

inchiostri, etc. Fanno parte di questa categoria di materiali le argille colloidali come la Laponite, che disciolta in acqua la Laponite forma una soluzione colloidale di dischi di dimensioni nanometriche con una carica disomogenea netta negativa sulle facce e positiva sui bordi. Dispersioni di Laponite in acqua sono

Roma "La Sapienza", Università di

138

Simple quantification of in planta fungal biomass.  

PubMed

An accurate assessment of the disease resistance status of plants to fungal pathogens is an essential requirement for the development of resistant crop plants. Many disease resistance phenotypes are partial rather than obvious immunity and are frequently scored using subjective qualitative estimates of pathogen development or plant disease symptoms. Here we report a method for the accurate comparison of total fungal biomass in plant tissues. This method, called the WAC assay, is based upon the specific binding of the plant lectin wheat germ agglutinin to fungal chitin. The assay is simple, high-throughput, and sensitive enough to discriminate between single Puccinia graminis f.sp tritici infection sites on a wheat leaf segment. It greatly lends itself to replication as large volumes of tissue can be pooled from independent experiments and assayed to provide truly representative quantification, or, alternatively, fungal growth on a single, small leaf segment can be quantified. In addition, as the assay is based upon a microscopic technique, pathogen infection sites can also be examined at high magnification prior to quantification if desired and average infection site areas are determined. Previously, we have demonstrated the application of the WAC assay for quantifying the growth of several different pathogen species in both glasshouse grown material and large-scale field plots. Details of this method are provided within. PMID:24643560

Ayliffe, Michael; Periyannan, Sambasivam K; Feechan, Angela; Dry, Ian; Schumann, Ulrike; Lagudah, Evans; Pryor, Anthony

2014-01-01

139

Anatomia foliar de plantas micropropagadas de abacaxi  

Microsoft Academic Search

The objective of this work was to study leaf anatomy of pineapple plants in order to improve acclimatization protocols. In vitro plantlets weighting an average of 3.1 g and greenhouse plantlets derived from in vitro stock material, after six and ten months of culture, weighting an average of 50.2 and 65 g, respectively, were used. Stomatal density was determined on

Sarah Brandão Santa Cruz Barboza; Dalva Graciano-Ribeiro; João Batista Teixeira; Tomás Aquino Portes; Luiz Augusto Copati Souza

2006-01-01

140

S?ndrome del Outlet Tor?cico: ?Una Patolog?a Siempre Quir?rgica? An?lisis de una Serie de 31 Cirug?as Realizadas por V?a Supraclavicular Serie cl?nica  

PubMed Central

Introducción: El síndrome de outlet torácico es una compresión del plexo braquial que suscita polémica. Se clasifica en Outlet Torácico Verdadero o neurogénico (OTV) y Outlet Torácico Disputado o no neurogénico (OTD). El primero presenta síntomas motores en la mano, mientras que el segundo sólo síntomas sensitivos en el miembro superior. El objetivo de este trabajo es analizar los resultados obtenidos en una serie de 31 cirugías. Métodos: Se analizaron las cirugías de nervios efectuadas entre 2003-2012, tomando los diagnósticos de outlet torácico cuyo período de seguimiento post-operatorio mínimo fuera de 6 meses. Se buscaron los siguientes datos: edad, sexo, presencia de síntomas sensitivos y/o motores, clasificación, resultado de los estudios neurofisiológicos y de imágenes, resultado de la cirugía, complicaciones post-operatorias y recidivas. Resultados: Se incluyeron 31 cirugías realizadas en 30 pacientes, 9 OTV (8 mujeres) de 24.3 años, y 21 con OTD (18 mujeres) de 37.4 años de edad en promedio. Un 90% presentaron alteraciones neurofisiológicas preoperatorias, y 66,6% imagenológicas. En el intraoperatorio, el 100% de los OTV presentó una alteración anatómica relacionada con la sintomatología, hecho observado sólo en el 36.7% de los OTD operados. El 87,5% de los OTV mejoraron sensitivamente, mientras que 77,7% mejoraron la atrofia. Por el contrario, 45.4% de los OTD mejoraron permanentemente, 36.3% no tuvieron cambios, 13.6% mejoraron transitoriamente y 4.5% (un caso) empeoró. Las complicaciones post-operatorias fueron más frecuentes aunque transitorias en el grupo de OTV (3 casos sobre 9 operados, 33.3%) que en los OTD (3 casos sobre 22, un 13.6%). Conclusión: El OTV suele mayormente mejorar luego de la cirugía, igual que el OTD aunque en una proporción mucho menor. Estos hallazgos coinciden con otros reportes recientes de esta patología. PMID:25165614

Socolovsky, Mariano; Di Masi, Gilda; Binaghi, Daniela; Campero, Alvaro; Paez, Miguel Dominguez; Dubrovsky, Alberto

2014-01-01

141

La realidad de la adquisición del lenguaje oral y escrito en una muestra de escuelas del sector sur de Santiago  

Microsoft Academic Search

Resumen  El presente trabajo da a conocer los resultados de un estudio realizado con niños asistentes a primer año de enseñanza básica\\u000a en escuelas municipalizadas de Santiago de Chile, pertenecientes al nivel sociocultural deprivado. El grupo estaba compuesto\\u000a por niños de ambos sexos, con una edad promedio de 6 años 8 meses. Los niños fueron medidos al comienzo y al final

Carmen Díaz Oyarce; Elena Alvarez-Salamanca Mujica

2001-01-01

142

Facebook i tuits en bon valenci: una iniciativa nascuda al si de la UA Alacant, 6 de juny de 2012  

E-print Network

Facebook i tuits en bon valencià: una iniciativa nascuda al si de la UA Alacant, 6 de juny de 2012 universitària de la Universitat d'Alacant en Facebook i Twitter. En Bon Valencià ens proporciona cada dia, directament en el nostre compte de Twitter o Facebook, xicotetes dosis de correcció lingüística, en el format

Escolano, Francisco

143

Aplicacion de un metodo aleatorio de simulacion a la optimizacion de una flota de vehiculos de transporte  

Microsoft Academic Search

Resumen  Para resolver un problema concreto de optimización de una flota de camiones-cisterna, destinados a distribuir productos petrolíferos,\\u000a fue necesario diseñar un método de cálculo que tuviera en cuenta algunos aspectos específicos del problema tratado, como eran\\u000a la dispersión y escasa dimensión de los clientes, la aleatoriedad de la demanda y las necesidades comerciales de dar un servicio\\u000a inmediato, sin posibilitar

Gonzalo Alvarez Lastra; Miguel-Angel Pesquera González

1979-01-01

144

El MUA acoge una jornada cultural organizada por alumnos de Publicidad Alicante, 9 de marzo de 2012  

E-print Network

Malabares y una muestra de Capoeira y bailes coreográficos abiertos a todo el que quieran participar. A las de Malabares en el patio interior del MUA 12. 00­ 14.45 horas Batukada por el campus y Capoeira en el Talleres de magia en el patio interior del MUA 14.00 ­ 14.45 horas Batukada por el campus y Capoeira en el

Escolano, Francisco

145

An Input-Output Formulation of the « Coef¬ficient of Money Transactions »: A Note on Hayek’s Trade Circle Theory - Una formulazione «input-output » del « coefficiente delle transazioni di moneta »: Una nota sulla teoria del ciclo economico di Hayek  

Microsoft Academic Search

Nel suo Prices and Production Hayek introdusse la nozione di « Coefficiente delle transazioni monetarie », della quale tuttavia non diede una trattazione analitica completa. Scopo di questo lavoro è dare una semplice formulazione input-output del coefficiente delle transazioni monetarie, e fornire alcune argomentazioni a favore della sua rilevanza analitica nella valutazione del concetto di « neutralità » della moneta

Corrado Benassi

1987-01-01

146

Anàlisi descriptiva de les variables: nivell d'activitat física, depressió i riscos cardiovasculars en treballadors i docents d'una institució universitària a Medellín (Colòmbia)  

Microsoft Academic Search

Objectiu: Identificar els nivells d'activitat física, depressió i riscos cardiovasculars dels empleats i docents d'una Institució Universitària a Medellín, Colòmbia (Politécnico Colombiano Jaime Isaza Cadavid). Mètode: De la població de docents i treballadors nascuts a partir del 1955, es va seleccionar una mostra aleatòria estratificada segons escala d'edat de Framingham, a la qual es van fer: exàmens de laboratori per

Elkin Eduardo Roldán Aguilar; María Helena Lopera Zapata; Francisco Javier Londoño Giraldo; José Luis Cardeño Tejada; Santiago Alberto Zapata Vidales

2008-01-01

147

Sviluppo di una micro CT con sorgente Quasi-Monocromatica Multi-Energy per lo studio in vivo della crescita e della metastasi tumorale  

Microsoft Academic Search

Un innovativo micro scanner CT per piccolo animali - basato su di una sorgente che genera una coppia di fasci X Quasi-Monocromatici paralleli con diverse energie selezionabili - è in corso di installazione e caratterizzazione al Dipartimento d i Fisica dell'Università di Bologna. Lo scopo della ricerca è quello di effettuare l'ima ging radiologico in vivo del tessuto tumorale e\\/o

G. Baldazzi; S. Masetti; P. L. Rossi; L. Roma; G. Nicoletti; P. L. Lollini

148

Una società armata è una società libera  

Microsoft Academic Search

An armed society is a free society Guns are mere objects. Preventing people from owning them, or limiting their availability, is an infringement of the natural right to property. Guns are also a peculiar good, since they are the key for the protection of liberty and property. In this perspective, gun control is not about guns: it is about control.

Carlo Stagnaro

2003-01-01

149

Una plataforma recongurable para la ense#anza de sistemas l#gicos H#ctor Fabio Restrepo 1 Francisco J. G#mez 2 Christof Teuscher 1  

E-print Network

desarrollo de software por otro. Los primeros son objeto de estudio en ingenier#a electr#nica, mien­ tras que] Sin embargo, es­ tos sistemas de desarrollo no consideran uno de los campos m#s prometedores: el presenta unas caracter#sticas #nicas: 1. Un software espec#øco, llamado RVS6200, que ha sido desarrollado

Teuscher, Christof

150

Prevalencia de E. histolytica y E. dispar por Microscopía y ELISA en Muestras Fecales de una Población Urbano Marginal de Lima  

Microsoft Academic Search

RESUMEN OBJETIVOS: El propósito del presente estudio fue utilizar pruebas inmunoenzimáticas (ELISA) para estudiar la prevalencia de Entamoeba histolytica y Entamoeba dispar en una localidad urbano marginal de Lima (Callao). MATERIAL Y MÉTODOS: Se utilizaron dos ELISA: uno que detecta E. histolytica y E. dispar (ELISA Entamoeba), y otro que identifica específicamente a E. histolytica. RESULTADOS: Se obtuvieron aleatoriamente 128

WILLIAM CORNEJO; YRMA ESPINOZA; ALINA HUIZA; PILAR ALVA; ROXANA SUAREZ; CARLOS SEVILLA; CÉSAR NÁQUIRA

151

ELEMENTOS PARA UNA ANTROPOLOGÍA DEL CINE: LOS NATIVOS EN EL CINE FICCIÓN DE CHILE TOWARD AN ANTHROPOLOGY OF CINEMA: NATIVE IN CHILEAN FICTION FILM  

Microsoft Academic Search

El cine ficción es uno de los medios de comunicación visual de mayor influencia en la circulación de valores y creencias en el mundo contemporáneo. Se trata de una práctica cultural de extremo control, planificación y manipulación audiovisual que ha permanecido en los márgenes de la preocupación antropológica. Sin embargo, nuevos intereses relativos a la comprensión de los modos de

Francisco Gallardo Ibáñez

152

Una investigación en el mercado de las ideas: la penetración global del concepto de “realismo periférico” en la bibliografía especializada en relaciones internacionales (a noviembre de 2008)  

Microsoft Academic Search

Este documento intenta medir la penetración global del realismo periférico, una teoría de relaciones internacionales acuñada en Argentina durante los ’80 y ‘90. Contiene un listado de documentos de diversos países donde el realismo periférico es mencionado en títulos o subtítulos.

Carlos Escudé

2008-01-01

153

Il Consiglio di Facolt di Economia ha espresso, in un documento approvato il 23/11/2010, una valutazione critica sulle politiche per l'Universit.  

E-print Network

Il Consiglio di Facoltà di Economia ha espresso, in un documento approvato il 23/11/2010, una come quella di Economia di Genova, che si trova sotto dimensionata nel proprio organico di docenti, al'attenzione degli studenti, delle famiglie, del territorio. A questo scopo la Facoltà di Economia, nella giornata

Robbiano, Lorenzo

154

Estudio de los NIH señala una relación de la tomografía computarizada (TC) en la infancia con leucemia y con cáncer de cerebro más tarde  

Cancer.gov

Niños y adultos jóvenes a quienes se les hicieron exploraciones muchas veces con tomografía computarizada (TC), una herramienta de diagnóstico de uso frecuente, tienen un riesgo ligeramente mayor de padecer leucemia y tumores cerebrales en la década posterior a su primera tomografía.

155

Diversity ethics. An alternative to Peter Singer's ethics1 ticas de la diversidad. Una alternativa a la tica de Peter Singer  

E-print Network

1 Diversity ethics. An alternative to Peter Singer's ethics1 Ã?ticas de la diversidad. Una discriminated on the grounds of gender, religion, age, sexual orientation, etc. On the other hand, functionally theories, as another human diversity, provides an extended ethical approach: diversity ethics. This general

Paris-Sud XI, Université de

156

POR UNA BELLEZA MS SIMPLE por Blazes Boylan En La sociedad de consumo, libro en el cual Jean Baudrillard propone que en nuestra  

E-print Network

POR UNA BELLEZA MÁS SIMPLE por Blazes Boylan En La sociedad de consumo, libro en el cual Jean, llegados a este punto, el comentario que Baricco hace en Los Bárbaros sobre la industria del libro acceso al mercado editorial, puede comprar cualquier libro aunque nunca haya leído uno: la industria

Geffner, Hector

157

Anthropization on the Cerrado biome in the Brazilian Uruçuí-Una Ecological Station estimated from orbital images.  

PubMed

In this study we analysed the dynamics of deforestation and burnings during the dry seasons from 2003 to 2008 in the Uruçuí-Una Ecological Station (UUES) and its buffer zone, located in the Cerrado biome of the southwest of Piauí, a Brazil's State, based on images from the orbital sensors CCD/CBERS-2 and TM/Landsat-5. Two dates from each of the years were interpreted and analysed: one in the middle of the dry season and one at the end. The deforested areas were expanded through the period analysed and were larger in the buffer zone, suggesting a relative protection of the UUES. New cut-offs were predictable because of the early opening of roads that would become their limits. The burning scars were larger at the end of the dry season as a consequence of the management and implementation of agricultures and pastures. In 2004 and 2007 these scars were larger probably because of the increase of dry phytomass that every three years is big enough to spread the fire originated in the anthropogenic burnings through the native vegetation. This scenario reaffirms the need for: stronger enforcement in order to stop anthropisation in the UUES and a management plan, absent for this unit so far. These proceedings are urgent also because the UUES is located in one of the most preserved regions of the Cerrado and controversially where intense anthropisation in ongoing, which stresses the lack, need and urgency of biological conservation proceedings for the Piauí's southeastern Cerrado. PMID:21180901

Pereira, A C; Gama, V F

2010-11-01

158

Una cierta rareza  

E-print Network

, digamos, la Calavera Catrina, de Posada, o las obesidades de Botero. Son fascinantes porque son fascinantes, porque con alta exactitud nos ofrecen tangencialmente proposiciones extremosas de la sociedad y sus valores, del ser humano en algún límite. La...

Carballido, Emilio

1992-10-01

159

Una historia desconocida  

E-print Network

sacramentales, tragedias, comedias, dramas, óperas, zarzuelas y otras piezas menores; es decir que nuestros autores han ensayado todos los subgéneros de la dramaturgia. En la formación de nuestro teatro, como en la conformación de nuestro pueblo han... leyenda; locales: presencia de Ropasanta o Raposanta, un mendigo visionario que hacia 1641 pronosticó el terremoto que asolaría años más tarde a la capital; e incluye personajes alegóricos como "La Justicia," "La Culpa," "La Música," "El Pueblo," "La...

Rojas U., José

1988-04-01

160

Estudio de los NIH revela que un resultado negativo de la prueba del VPH es un mejor predictor de un riesgo bajo de cáncer de cuello uterino que una prueba de Pap negativa  

Cancer.gov

De acuerdo con un estudio en el que participaron más de un millón de mujeres, los investigadores del NCI han determinado que el resultado negativo de una prueba para la detección del VPH proporciona mayor certeza o seguridad frente a riesgos futuros de cáncer de cuello uterino que una prueba de Pap.

161

Introduccion. Una matriz de m filas y n columnas con elementos en el cuerpo K es un rectangulo de elementos de K (es decir, numeros) del tipo  

E-print Network

Matrices Introducci´on. Una matriz de m filas y n columnas con elementos en el cuerpo K es un rect ... ... ... ... am1 am2 · · · amn . El elemento aij est´a en la fila i y la columna j. Notaremos por Mm�n(K) al + · · · + ainbnj. El elemento pij es el producto escalar de fila i de la matriz A y la columna j de la matriz B

Ramírez-Ros, Rafael

162

L’herbassar de felandri fistulós i baldèl·lia (Baldellio ranunculoidis-Oenanthetum fistulosae), una nova associació herbàcia higròfila dels Països Catalans  

Microsoft Academic Search

Fem la tipificació ecològica i fitosociològica dels herbassars d’Eleocharis palustris s.l. descrits als Països Catalans i proposem una nova associació herbàcia caracteritzada per Eleocharis palustris subsp. palustris, Baldellia ranunculoides, Oenanthe fistulosa, Gratiola officinalis, Mentha pulegium i Eleocharis palustris subsp. uniglumis. Aquesta comunitat s’estableix en diverses àrees palustres (aiguamolls, basses temporànies i prats dalladors) de la Catalunya nord-oriental (territoris catalanídic septentrional

Gabriel Mercadal i Corominas; Josep Gesti Perich; Lluís Vilar

2008-01-01

163

Seleccin de libros Elsevier para la UA Para el prximo ao 2012 hemos de realizar una seleccin de ttulos que formarn parte de nuestra coleccin  

E-print Network

Selección de libros Elsevier para la UA Para el próximo año 2012 hemos de realizar una selección de acceso a la plataforma de Libros-e Science Direct. También se puede acceder a los libros a través del Buscador de libros electrónicos. Igualmente, enviamos informe de uso de esta plataforma durante el presente

Escolano, Francisco

164

In planta mutagenesis of Src homology 3 domain-like fold of NdhS, a ferredoxin-binding subunit of the chloroplast NADH dehydrogenase-like complex in Arabidopsis: a conserved Arg-193 plays a critical role in ferredoxin binding.  

PubMed

Chloroplast NADH dehydrogenase-like (NDH) complex mediates cyclic electron transport around photosystem I and chlororespiration in angiosperms. The Src homology 3 domain (SH3)-like fold protein NdhS/CRR31 is an NDH subunit that is necessary for high affinity binding of ferredoxin, indicating that chloroplast NDH functions as a ferredoxin:plastoquinone oxidoreductase. However, the mechanism of the interaction between NdhS and ferredoxin is unclear. In this study, we analyzed their interaction in planta by using site-directed mutagenesis of NdhS. In general, binding of ferredoxin to its target proteins depends on electrostatic interaction. In silico analysis predicted the presence of a positively charged pocket in the SH3-like domain of NdhS, where nine charged residues are highly conserved among plants. Systematic alteration of these sites with neutral glutamine revealed that only arginine 193 was required for high NDH activity in vivo. Further replacement of arginine 193 with negatively charged aspartate or glutamate or hydrophobic alanine significantly decreased the efficiency of ferredoxin-dependent plastoquinone reduction by NDH in ruptured chloroplasts. Similar results were obtained in in vivo analyses of NDH activity and electron transport. From these results, we propose that the positive charge of arginine 193 in the SH3-like domain of NdhS is critical for electrostatic interaction with ferredoxin in vivo. PMID:24225949

Yamamoto, Hiroshi; Shikanai, Toshiharu

2013-12-20

165

PS-GRADUAO EM BIOLOGIA DE FUNGOS, ALGAS E PLANTAS  

E-print Network

Pereira Dias UFSC ­ Florianópolis Anatomia vegetal 6. Genivaldo Alves da Silva UNIC ­ Primavera do Leste ­ Florianópolis Anatomia vegetal 9. Jaime Andres Duque Barbosa Universidad de Antioquia Medellín ­ Colômbia 19. Roberta Mara Royer UFSC ­ Florianópolis Anatomia vegetal 20. Silvaney Martins Sardinha UNIC

Floeter, Sergio Ricardo

166

Plantas transgênicas resistentes aos herbicidas: situação e perspectivas  

Microsoft Academic Search

RESISTANT TRANSGENIC PLANTS TO THE HERBICIDE: SITUATION AND PERSPECTIVES Genetically modified organisms (GMOs) or transgenic may be plants, animals or microorganisms that have DNA inserted into their cells from another organism. In some cases, this organism may be from a other individue of the same species, or from another species with which they would not normally cross-breed. The use of

Patrícia Andréa Monquero

2005-01-01

167

Performance of Tawa Hydroelectric Power Plant-A Case Study  

Microsoft Academic Search

Small Hydro Power Project may be used as one of the option for achieving the energy targets in a developing country like India where center or state Governments have limited financial resources to put in large projects which require long gestation period. One additional advantage with the Small Hydro Power Project is that private partners may get attracted due to

T. S. Mehra; N. I. Alvi; A. Rajasekhar

168

Elucidation and in planta reconstitution of the parthenolide biosynthetic pathway.  

PubMed

Parthenolide, the main bioactive compound of the medicinal plant feverfew (Tanacetum parthenium), is a promising anti-cancer drug. However, the biosynthetic pathway of parthenolide has not been elucidated yet. Here we report on the isolation and characterization of all the genes from feverfew that are required for the biosynthesis of parthenolide, using a combination of 454 sequencing of a feverfew glandular trichome cDNA library, co-expression analysis and metabolomics. When parthenolide biosynthesis was reconstituted by transient co-expression of all pathway genes in Nicotiana benthamiana, up to 1.4?gg(-1) parthenolide was produced, mostly present as cysteine and glutathione conjugates. These relatively polar conjugates were highly active against colon cancer cells, with only slightly lower activity than free parthenolide. In addition to these biosynthetic genes, another gene encoding a costunolide and parthenolide 3?-hydroxylase was identified opening up further options to improve the water solubility of parthenolide and therefore its potential as a drug. PMID:24704560

Liu, Qing; Manzano, David; Tani?, Nikola; Pesic, Milica; Bankovic, Jasna; Pateraki, Irini; Ricard, Lea; Ferrer, Albert; de Vos, Ric; van de Krol, Sander; Bouwmeester, Harro

2014-05-01

169

Planta (1985)165:548-553 Planta9 Springer-Verlag 1985 Porphyranereocystis: A dual-daylength seaweed  

E-print Network

treatment for completion of its life cycle. This stringent environmental control of its reproduction appears Sound region (Fallis 1915; Sheldon 1915; Hurd 1915; Rigg 1917; Duncan 1973) and in even deeper water 1981). At maturity, presumably as a result of sex- ual reproduction, diploid carpospores are pro- duced

California at Santa Cruz, University of

170

Preparing for the Unexpected (Spanish)  

E-print Network

patas. 1#24; ? Haga que un veterinario inmediatamente despu?s del desastre haga una necropsia de todos los animales que murieron. ? Desh?gase inmediatamente de los animales muertos. Algunas plantas ofrecen procesar a algunos animales muertos... patas. 1#24; ? Haga que un veterinario inmediatamente despu?s del desastre haga una necropsia de todos los animales que murieron. ? Desh?gase inmediatamente de los animales muertos. Algunas plantas ofrecen procesar a algunos animales muertos...

Harris, Janie; Norman, Lisa; Smith, David; Lesikar, Bruce J.

2007-04-23

171

On-Site Wastewater Treatment Systems: Constructed Wetlands (Spanish)  

E-print Network

tejido duro o suave, algunos, expertos creen que las plantas de tejido duro son mejores porque pueden ofrecer una v?a para que el ox?geno entre al humedal durante el invierno y reducir la necesidad del mantenimiento de plantas. Sin embargo, los residentes... prefieren plantas de tejido suave porque por lo general tienen flores y son llamativas. Recuerde que si usa plantas de tejido suave, el sistema puede necesitar m?s mantenimiento. Tratamiento Primero, el tanque s?ptico trata las aguas negras. El tanque, que...

Lesikar, Bruce J.; Enciso, Juan

2002-04-18

172

Actas del Congreso Internacional "Amrica Latina: La autonoma de una regin", organizado por el Consejo Espaol de Estudios Iberoamericanos (CEEIB) y la Facultad de Ciencias Polticas y Sociologa de la Universidad Complutense de Madrid (UCM),  

E-print Network

-84-92755-88-2 #12;ÁREA DE CIENCIA POLÍTICA 290 DE SECRETARIOS DE ESTADO A PARLAMENTARISTAS: EL RECICLAJE, afectar una precaria cultura democrática. Observaremos en qué medida el "reciclaje" de políticos influye

Boyer, Edmond

173

Una cinta transportadora de longitud l se mueve con velocidad v respecto al suelo. Por su extremo derecho se introduce un bloque de masa m que se mover en contra de la cinta  

E-print Network

Problema 2 Una cinta transportadora de longitud l se mueve con velocidad v respecto al suelo. Por). Determine la velocidad vo (respecto al suelo) con la cual es necesario impulsar el bloque contra el, y que ahí se detenga respecto al suelo. En tal punto, con el bloque en reposo respecto al suelo

Chang, Mark J. L.

174

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

Forestales: Una Visión Global Efectos de los Reglamentos y la Responsabilidad Civil en el Riesgo de la Quema disposiciones de las leyes de responsabilidad civil y de los reglamentos influirán en los incentivos para la tienden a ser menores en los estados con leyes parlamentarias de responsabilidad civil y restricciones

Standiford, Richard B.

175

Actas del Congreso Internacional "Amrica Latina: La autonoma de una regin", organizado por el Consejo Espaol de Estudios Iberoamericanos (CEEIB) y la Facultad de Ciencias Polticas y Sociologa de la Universidad Complutense de Madrid (UCM),  

E-print Network

últimos años, los estudios turísticos han ido dando una creciente relevancia al rol del turismo (y las consecuencias que el turismo, como vector del cambio climático, tiene sobre otros sectores propuestas que la industria y diferentes instituciones plantean para amortiguar o compensar ese impacto

Paris-Sud XI, Université de

176

Suelo: estabilidad en agua (v: 13/1/05) Se sacan 18 muestras (5x5 mm cada una) de la superficie del suelo (0-3 mm de profundidad) y 18  

E-print Network

Suelo: estabilidad en agua (v: 13/1/05) Se sacan 18 muestras (5x5 mm cada una) de la superficie del cada canastilla que contiene agua destilada (2 cm profundidad). Se observan por 5 minutos y después se agitan suavemente de arriba (por encima del agua) y abajo 5 veces (2 segundos por ciclo). Las

177

A'Una ("Let's Go!")  

ERIC Educational Resources Information Center

The guide, intended to aid students (grades four and above) in making their bodies a good home for their spirit, provides a variety of athletic activities and traditional Indian recipes for use in the classroom or in cultural programs. Apart from running (the major American Indian means of maintaining physical fitness), instructions are given for…

Brescia, Bill

178

UNA HISTORIA DE LA CIENCIA  

E-print Network

personajes. Por ejemplo, además de discutir la muy conocida persecución de la In- quisición a Galileo Galilei apellido original por el de Galilei (los Galileo). El Galileo que conocemos heredó tanto el nombre de pila como un pariente de Galileo Galilei. Gribbin muestra que el desarrollo de la ciencia no estuvo libre de

Rosas-Ortiz, Jose Oscar

179

Cambio climático: Una perspectiva regional  

Microsoft Academic Search

El objetivo de este documento es contribuir a la reflexión acerca del cambio climático sobre la base de la evidencia disponible respecto de los posibles canales de transmisión de dicho fenómeno a la economía y de los resultados de la decimoquinta Conferencia de las Partes en la Convención Marco de las Naciones Unidas sobre Cambio Climático (COP 15), celebrada del

Banco Interamericano de Desarrollo; Comisión Económica para América Latina y el Caribe

2010-01-01

180

Una entrevista con Emilio Carballido.  

E-print Network

. Volví a Córdoba poco antes de la adolescencia y entonces siempre estuve ya con muchos contactos en Córdoba, pero viviendo allá sin estudiar. Yo perdí años de escuela por irme a vivir a Córdoba. Es decir, yo llevé mi carrera con muchas lagunas, de... chico. Entonces escojo lugares chicos. Tomemos el caso de El jardín de los cerezos, Un enemigo del pueblo, El padre y ciertas obras muy respetables que realmente no puede uno decir que son costumbristas. Bueno, las mías no es que las ponga en esa...

Vé lez, Joseph F.

1973-10-01

181

Red inalmbrica de la Universidad de Alicante La Red Inalmbrica de la UA (eduroam) es una extensin de la red local, disponible en el 99% del Campus de San  

E-print Network

Red inalámbrica de la Universidad de Alicante La Red Inalámbrica de la UA (eduroam) es una extensión de la red local, disponible en el 99% del Campus de San Vicente. eduroam (Educational Roaming) es no puedan utilizarse en la red wireless de la UA o sufran problemas de navegación o conexión. No se ofrecerá

Escolano, Francisco

182

WorldCat UA. Nuevo buscador en la Universidad de Alicante La Biblioteca Universitaria de la UA cuenta desde hoy con una nueva herramienta de bsqueda en la que se  

E-print Network

WorldCat UA. Nuevo buscador en la Universidad de Alicante La Biblioteca Universitaria de la UA información electrónica contratados por la UA, así como de los catálogos de unas 72.000 bibliotecas de todo el OCLC Acceso a WorldCat UA DIRECCI�N POSTAL Universidad de Alicante Carretera de San Vicente del Raspeig

Escolano, Francisco

183

Introduccin a la programacin en iOS y Objective-C iPhone se ha convertido en poco tiempo en una de las plataformas ms populares y con  

E-print Network

Introducción a la programación en iOS y Objective-C iPhone se ha convertido en poco tiempo en una programador de iPhone / iPad haciendo aplicaciones para importantes firmas dentro del territorio nacional ecosistema de MAC OS X " Mac OS X, iPhone y Cocoa " Herramientas de programación en Mac OS X / iPhone

Escolano, Francisco

184

Per un'analisi diacronica del bolognese: Storia di un dialetto al centro dell'Emilia-Romagna \\/ Per una anàlisi diacrònica del bolonyès: Història d'un dialecte al centre de l'Emília-Romanya  

Microsoft Academic Search

[IT] L'evoluzione fonetica del dialetto bolognese dal latino volgare ai tempi nostri può essere ricostruita grazie a due strumenti fondamentali: 1) un continuo confronto coi dialetti imparentati dell’Emilia-Romagna rimasti a una fase meno innovativa del loro sviluppo (in particolare quelli, molto conservativi, dell'alta montagna bolognese); 2) l'applicazione delle conquiste della fonetica articolatoria alle diverse fasi di sviluppo indagate dalla fonetica

Daniele Vitali

2008-01-01

185

Estudio epidemiol?gico de sucesos traum?ticos, trastorno de estr?s post-traum?tico y otros trastornos psiqui?tricos en una muestra representativa de Chile  

PubMed Central

RESUMEN Durante la década de 1990 en los Estados Unidos (EU), el conocimiento sobre el trastorno de estrés post-traumático (TEPT) evolucionó de estudios específicos en un principio, sobre veteranos de guerra y sobre víctimas de desastres, a estudios epidemiológicos más tarde, sin embargo, la epidemiología del TEPT en países en desarrollo ha sido un área poco estudiada hasta ahora. Los expertos en el área de trauma han propuesto que los sucesos traumáticos que ocurren en la niñez son más perjudiciales para la salud mental que aquellos que ocurren más tarde en la vida. Este trabajo revisa los resultados de un estudio epidemiológico llevado a cabo en Chile. Específicamente, se revisan los resultados sobre las tasas de prevalencia del TEPT, traumas asociados más frecuentemente con él, así como la comorbilidad de este trastorno con otros trastornos psiquiátricos a lo largo de la vida. Igualmente se analizaron las diferencias del TEPT en cada sexo, así como la exposición a traumas en una muestra representativa de chilenos. Además se comparó la prevalencia de trastornos psiquiátricos en personas que sufrieron su primer trauma durante la niñez, durante la edad adulta, o que no reportaron traumas durante su vida. En estos estudios epidemiológicos se usaron módulos del TEPT y trastorno de personalidad antisocial (TPA) de la entrevista diagnóstica siguiendo los criterios del DSM-III-R (DIS–III-R). Para evaluar el resto de los trastornos psiquiátricos se usó la Entrevista Diagnóstica Internacional Compuesta (CIDI). Estos instrumentos fueron administrados en tres ciudades chilenas a 2390 personas mayores de 15 años. Para estimar los errores estándares (EE) debido al diseño de la muestra y a la necesidad de ajuste se usó el método Taylor de linearización seriada. También se usó un análisis de regresión logística para examinar la relación entre el TEPT, los factores demográficos de riesgo y el tipo de trauma. Además se utilizó la regresión logística multivariada para evaluar si la relación entre el TEPT y el sexo pudiera ser explicada por medio de otros factores de riesgo, así como para calcular las tasas y la oportunidad relativa (razón de productos cruzados) de trastornos psiquiátricos a lo largo de la vida. El primer análisis arrojó que la prevalencia de TEPT a lo largo de la vida fue de 4.4% (2.5% para hombres y 6.2% para mujeres). De los hechos traumáticos reportados, la violación sexual tuvo una correlación más alta con el TEPT que los demás hechos traumáticos. Las mujeres tuvieron más probabilidades de experimentar TEPT que los hombres, después de controlar la variable asalto violento. El segundo análisis evidenció que los que habían sufrido traumas a lo largo de la vida tuvieron mayor probabilidad de tener un trastorno psiquiátrico en comparación con aquellos que no reportaron traumas. También se encontró que los que sufrieron su primer trauma durante la infancia tuvieron más probabilidad de desarrollar trastornos de pánico a lo largo de la vida que aquellos que sufrieron su primer trauma en la edad adulta, independientemente del número de traumas que sufrieron y de las diferencias demográficas. Aunque Chile tiene un contexto histórico-cultural y una economía diferente a otros países en los que se ha estudiado anteriormente la epidemiología del TEPT, el presente estudio reflejó tendencias similares a las reportadas en estudios previos. Los hallazgos expuestos enfatizan la importancia de investigar la prevalencia del TEPT, los patrones de comorbilidad del TEPT y las diferencias de sexo en la prevalencia del TEPT en diferentes países. También estos resultados sugieren que los sucesos traumáticos en la infancia

Perez Benitez, Carlos I.; Vicente, Benjamin; Zlotnick, Caron; Kohn, Robert; Johnson, Jennifer; Valdivia, Sandra; Rioseco, Pedro

2010-01-01

186

Los índices de mortalidad por cáncer de pulmón siguen bajando y contribuyen a reducción de índices generales de muertes por cáncer; Informe Anual a la Nación tiene una sección especial de los efectos de otras enfermedades en la supervivencia de pacientes  

Cancer.gov

El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con cáncer.

187

Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2010, con una sección especial sobre la prevalencia de comorbilidad y su efecto en la supervivencia de personas con cáncer de pulmón, seno, próstata o colorrectal: preguntas y respuestas  

Cancer.gov

El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con cáncer.

188

Plegaria de una dama : Oh, Dios mo!!!!!!  

E-print Network

Latency+1 P, L C, L C, S Partial reinforcement extinction effect (PREE) in runway (and MREE too) Gonzalez: ·FE RF ·iSNC ·MREE rF ·PREE Procedures: ·Double runway ·Skinner box RF ·Choice Procedure ·Complex maze ·Runway rF ·Skinner box Consummatory successive negative contrast (cSNC) RF & rF #12;· Basic

Cooper, Brenton G.

189

Acustica con una Bic e uno smartphone  

E-print Network

A smartphone, with its integrated sensors and cpu, can aid experiments in many different areas of Physics. We show how the resonant frequencies of a pipe can be measured using a smartphone and a Bic pen.

Galante, Lorenzo

2014-01-01

190

Embarazo abdominal secundario tras una esterilización tubárica  

Microsoft Academic Search

The ectopic pregnancy appears in the 10-12% of cases after tubal sterilization and it is usually located in the tube. 1% of ectopic pregnancies are abdominal and the implantation in omentum is a rare condition with only 16 described cases. According to Studdiford, they can be classified as primary or secondary depending on whether they are originated or not in

Elena M. Losa Pajares; Marco A. Arones Collantes; Leyre Gil Martínez-Acacio; Alejandro Pascual Martín; Vicente Almodóvar Rico; Gaspar González de Merlo

2007-01-01

191

Triplicidad ureteral: Una inusual presentación aislada  

Microsoft Academic Search

URETERAL TRIPLICATION, AN UNUSUAL ISOLATED PRESENTATION We report the case of a 26 years old female who presented, as a casual finding, a right complete ureteral triplicity ( probably Campbell's tipe I) with no other associated abnormalities. Despite ureteral duplication is a frequent urological anomaly, the presence of three ureters occur- ring in the same side, in a complete or

A. Villanueva Peña; E. de Diego Rodríguez

2004-01-01

192

Medicina evolucionaria: una ciencia básica emergente  

Microsoft Academic Search

Evolutionary Medicine is an emergent basic science that offers new and varied perspectives to the comprehension of human health. The application of classic evolutionary theories (descent with modification, and natural selection) to the human organism, to its pathogens, and their mutual co-evolution, provides new explanations about why we get sick, how we can prevent this, and how we can heal.

Angel E Spotorno Oa

193

Epilepsia y marcapasos: una curiosa asociación  

Microsoft Academic Search

Some epileptic patients may have potentially fatal cardiac rhythm disorders during seizures, and inversely, some cardiac arrhythmias may induce seizures.We present the case of a 71-year-old man diagnosed with primary generalized epilepsy who had a permanent pacemaker because of a trifascicular block. He developed generalized seizures coinciding with intermittent dysfunction of the cardiac device, which we observed while performing an

J. L. Hernández Hernández; M. Gutiérrez-Santiago; V. Burgos Palacios; E. Pariente Rodrigo

2010-01-01

194

Telmaco Talavera Siles Presidente CNU / Rector UNA  

E-print Network

Free Trade Agreements United States, Mexico, Panama, Taiwan, Dominican Republic, Chile & European Union : Cordoba (C$22.43 x US$1 ­ 2011 average) Poverty : 50% of the total population 70% of the rural population of the Poverty Reduction Strategy · Economical growth with emphasis in the rural sector. · Investment in human

195

Soil bacteria augment Arabidopsis photosynthesis by decreasing glucose sensing and abscisic acid levels in planta  

E-print Network

Soil bacteria augment Arabidopsis photosynthesis by decreasing glucose sensing and abscisic acid as belowground microflora, whether and how soil symbionts regulate photosynthesis has yet to be reported. Here photosynthesis through the modulation of endogenous sugar/ ABA signaling, and establish a regulatory role

Paré, Paul W.

196

Wide Screening of Phage-Displayed Libraries Identifies Immune Targets in Planta  

PubMed Central

Microbe-Associated Molecular Patterns and virulence effectors are recognized by plants as a first step to mount a defence response against potential pathogens. This recognition involves a large family of extracellular membrane receptors and other immune proteins located in different sub-cellular compartments. We have used phage-display technology to express and select for Arabidopsis proteins able to bind bacterial pathogens. To rapidly identify microbe-bound phage, we developed a monitoring method based on microarrays. This combined strategy allowed for a genome-wide screening of plant proteins involved in pathogen perception. Two phage libraries for high-throughput selection were constructed from cDNA of plants infected with Pseudomonas aeruginosa PA14, or from combined samples of the virulent isolate DC3000 of Pseudomonas syringae pv. tomato and its avirulent variant avrRpt2. These three pathosystems represent different degrees in the specificity of plant-microbe interactions. Libraries cover up to 2×107 different plant transcripts that can be displayed as functional proteins on the surface of T7 bacteriophage. A number of these were selected in a bio-panning assay for binding to Pseudomonas cells. Among the selected clones we isolated the ethylene response factor ATERF-1, which was able to bind the three bacterial strains in competition assays. ATERF-1 was rapidly exported from the nucleus upon infiltration of either alive or heat-killed Pseudomonas. Moreover, aterf-1 mutants exhibited enhanced susceptibility to infection. These findings suggest that ATERF-1 contains a microbe-recognition domain with a role in plant defence. To identify other putative pathogen-binding proteins on a genome-wide scale, the copy number of selected-vs.-total clones was compared by hybridizing phage cDNAs with Arabidopsis microarrays. Microarray analysis revealed a set of 472 candidates with significant fold change. Within this set defence-related genes, including well-known targets of bacterial effectors, are over-represented. Other genes non-previously related to defence can be associated through this study with general or strain-specific recognition of Pseudomonas. PMID:23372747

Rioja, Cristina; Van Wees, Saskia C.; Charlton, Keith A.; Pieterse, Corne M. J.; Lorenzo, Oscar; Garcia-Sanchez, Susana

2013-01-01

197

Origin and evolution of metal P-type ATPases in Plantae (Archaeplastida)  

PubMed Central

Metal ATPases are a subfamily of P-type ATPases involved in the transport of metal cations across biological membranes. They all share an architecture featuring eight transmembrane domains in pairs of two and are found in prokaryotes as well as in a variety of Eukaryotes. In Arabidopsis thaliana, eight metal P-type ATPases have been described, four being specific to copper transport and four displaying a broader metal specificity, including zinc, cadmium, and possibly copper and calcium. So far, few efforts have been devoted to elucidating the origin and evolution of these proteins in Eukaryotes. In this work, we use large-scale phylogenetics to show that metal P-type ATPases form a homogenous group among P-type ATPases and that their specialization into either monovalent (Cu) or divalent (Zn, Cd…) metal transport stems from a gene duplication that took place early in the evolution of Life. Then, we demonstrate that the four subgroups of plant metal ATPases all have a different evolutionary origin and a specific taxonomic distribution, only one tracing back to the cyanobacterial progenitor of the chloroplast. Finally, we examine the subsequent evolution of these proteins in green plants and conclude that the genes thoroughly characterized in model organisms are often the result of lineage-specific gene duplications, which calls for caution when attempting to infer function from sequence similarity alone in non-model organisms. PMID:24575101

Hanikenne, Marc; Baurain, Denis

2013-01-01

198

EFEITO DE EXTRATOS AQUOSOS DE PLANTAS NA OVIPOSIÇÃO DA TRAÇA-DAS-CRUCÍFERAS, EM COUVE (1)  

Microsoft Academic Search

RESUMO Avaliou-se o efeito de extratos aquosos de Achillea millefolium L. (folhas), Azadirachta indica A. Juss. (folhas), Bidens pilosa L. (folhas, frutos e ramos), Bougainvillea glabra Choisy (folhas), Chenopodium ambrosioides L. (folhas, frutos e ramos), Datura suaveolens Humb & Bonpl. ex. Willd (folhas), Enterolobium contortisilliquum (Vell.) Morong (frutos), Mentha crispa L. (folhas e ramos), Nicotiana tabacum L. (folhas), Piper nigrum

CESAR AUGUSTO; MANFRÉ MEDEIROS; ARLINDO LEAL

2005-01-01

199

Carotenoid In Planta Development, Storage, and Bioaccessibility: A Comprehensive Approach to Nutrient Analysis  

E-print Network

greenhouse in coconut coir media using standard irrigation, fertilization, and pest management practices in two years. In the first year, harvest intervals were set at 10, 20, 40, and 55 days post pollination (DPP). The experimental design was expanded... greenhouse in coconut coir media using standard irrigation, fertilization, and pest management practices in two years. In the first year, harvest intervals were set at 10, 20, 40, and 55 days post pollination (DPP). The experimental design was expanded...

Jeffery, Jennifer L.

2010-01-14

200

EVALUACIÓN DE ALTERNATIVAS PARA LA LOCALIZACIÓN DE PLANTAS DE RECICLAJE DE RAEE EN ESPAÑA  

Microsoft Academic Search

As a consequence of new European legal regulations for treatment of waste electrical and electronic equipment (WEEE), recycling plants have to be installed in Spain. In this context, this contribution provides the decision maker with a ranking of Spanish municipalities according to their appropriateness for the installation of these plants. In order to rank the alternatives, the discrete multi-criteria decision

D. Queiruga; J. González-Benito

201

Planta (1994)192:372-378 P l ~ n t ~ 9 Springer-Verlag1994  

E-print Network

arrested flower buds with GA 3 restores normal anther development and produces fertile flowers. After GA 3 gibberellins and exhibits phenotypes including extreme dwarfism, reduced germination, and abnormal flower development, which are reversed by the application of gibberellic acid (GA3). Previous work has demonstrated

Jacobsen, Steve

202

Planta (2014) 239:591603 DOI 10.1007/s00425-013-1998-6  

E-print Network

Abbreviations HZ1 Spirodela polyrrhiza WX3 Lemna minor N Nitrogen NRE Nitrogen-removal efficiency GC/MS Gas- rhiza (HZ1) and Lemna minor (WX3), under natural and aseptic conditions. An activity-guided bioassay

Kronzucker, Herbert J.

203

Planta (1995)196:691-698 P l a n t ~ 9 Springer-Verlag 1995  

E-print Network

-mycorrhizal roots of intact Picea glauca (Moench) Voss. seedlings at four different concentration regimes - Compartmental analysis - Ni- trogen-13 - Picea Abbreviations and symbol: [NH+]cyt = cytoplasmic NH,~ concen

Kronzucker, Herbert J.

204

Planta (1995)196:674-682 P l m a t ~ 9 Springer-Verlag1995  

E-print Network

- in intact non-mycor- rhizal roots of Picea glauca (Moench) Voss. seedlings. Three compartments were defined) - Nitrogen-13 - Picea Abbreviations and symbols: [NO3]cyt = cytoplasmicNO3 concen- tration; [NO3]freespace

Kronzucker, Herbert J.

205

Evite los Conceptos Erróneos cuando Enseñe 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;)

2005-05-01

206

Planta (2007) 226:839851 DOI 10.1007/s00425-007-0530-2  

E-print Network

metabolism, stress responses, hormone regulation and other expressed proteins were identiWed. Transcriptional / Published online: 12 May 2007 © Springer-Verlag 2007 Abstract Certain plant growth-promoting rhizobacteria (PGPR), in the absence of physical contact with a plant stimulate growth via volatile organic compound

Paré, Paul W.

207

Auxin transport sites are visualized in planta using fluorescent auxin analogs.  

PubMed

The plant hormone auxin is a key morphogenetic signal that controls many aspects of plant growth and development. Cellular auxin levels are coordinately regulated by multiple processes, including auxin biosynthesis and the polar transport and metabolic pathways. The auxin concentration gradient determines plant organ positioning and growth responses to environmental cues. Auxin transport systems play crucial roles in the spatiotemporal regulation of the auxin gradient. This auxin gradient has been analyzed using SCF-type E3 ubiquitin-ligase complex-based auxin biosensors in synthetic auxin-responsive reporter lines. However, the contributions of auxin biosynthesis and metabolism to the auxin gradient have been largely elusive. Additionally, the available information on subcellular auxin localization is still limited. Here we designed fluorescently labeled auxin analogs that remain active for auxin transport but are inactive for auxin signaling and metabolism. Fluorescent auxin analogs enable the selective visualization of the distribution of auxin by the auxin transport system. Together with auxin biosynthesis inhibitors and an auxin biosensor, these analogs indicated a substantial contribution of local auxin biosynthesis to the formation of auxin maxima at the root apex. Moreover, fluorescent auxin analogs mainly localized to the endoplasmic reticulum in cultured cells and roots, implying the presence of a subcellular auxin gradient in the cells. Our work not only provides a useful tool for the plant chemical biology field but also demonstrates a new strategy for imaging the distribution of small-molecule hormones. PMID:25049419

Hayashi, Ken-ichiro; Nakamura, Shouichi; Fukunaga, Shiho; Nishimura, Takeshi; Jenness, Mark K; Murphy, Angus S; Motose, Hiroyasu; Nozaki, Hiroshi; Furutani, Masahiko; Aoyama, Takashi

2014-08-01

208

Improving plant digestibility by in-planta expression of fungal enzymes  

Microsoft Academic Search

Cell walls play important roles in the life of plants. Moreover, as a major sink for photosynthates they factor heavily in the nutrition of farm animals and - potentially - in the future replacement of petroleum with a renewable, domestic source of fuel for transportation needs. Ferulic acid (4-hydroxy-3-metoxy-cinnamic acid) is the most abundant hydroxycinnamic acid (HCA) in grass cell

Tim Langdon; Barbara Hauck; Sue Dalton; Phillip Morris

209

Planta (2009) 230:111 DOI 10.1007/s00425-009-0921-7  

E-print Network

exclusively from Xowers. An insect- induced gene (AlCarS) with high sequence similarity to the Xorally A. lyrata ssp. petraea population. Recombinant AlCarS converts the sesquiterpene precursor, farnesyl AlCarS Arabidopsis lyrata ssp. petraea (E)- -caryophyllene synthase AtTPS21 A. thaliana terpene

Tholl, Dorothea

210

Screening for inhibitors of chloroplast galactolipid synthesis acting in membrano and in planta.  

PubMed

The knowledge of the membrane lipid metabolism in photosynthetic cells is expected to benefit from the availability of inhibitors acting at the level of specific enzymes like MGD1 (E.C. 2.4.1.46) that catalyzes the synthesis of monogalactosyldiacylglycerol (MGDG) in chloroplasts. MGDG is a major lipid of photosynthetic membrane, interacting with photosystems. It is the precursor of digalactosyldiacylglycerol that serves as a phospholipid surrogate when plants are deprived of phosphate, and it is a source of polyunsaturated fatty acids for jasmonic acid syntheses. MGD1 is activated by phosphatidic acid and thus a coupling point between phospholipid and galactolipid metabolisms. Here we describe a method to screen for inhibitors of MGD1 assayed in liposomes. Selected compounds can therefore reach the core of the biological membranes in which the target sits. We then describe a secondary screen to evaluate the efficiency of developed compounds at the whole plant level. Major issues raised by the screening of inhibitors acting on membrane proteins are discussed and can be useful for similar targets. PMID:24306864

Boudière, Laurence; Maréchal, Eric

2014-01-01

211

Identification and analysis of in planta expressed genes of Magnaporthe oryzae  

PubMed Central

Background Infection of plants by pathogens and the subsequent disease development involves substantial changes in the biochemistry and physiology of both partners. Analysis of genes that are expressed during these interactions represents a powerful strategy to obtain insights into the molecular events underlying these changes. We have employed expressed sequence tag (EST) analysis to identify rice genes involved in defense responses against infection by the blast fungus Magnaporthe oryzae and fungal genes involved in infectious growth within the host during a compatible interaction. Results A cDNA library was constructed with RNA from rice leaves (Oryza sativa cv. Hwacheong) infected with M. oryzae strain KJ201. To enrich for fungal genes, subtraction library using PCR-based suppression subtractive hybridization was constructed with RNA from infected rice leaves as a tester and that from uninfected rice leaves as the driver. A total of 4,148 clones from two libraries were sequenced to generate 2,302 non-redundant ESTs. Of these, 712 and 1,562 ESTs could be identified to encode fungal and rice genes, respectively. To predict gene function, Gene Ontology (GO) analysis was applied, with 31% and 32% of rice and fungal ESTs being assigned to GO terms, respectively. One hundred uniESTs were found to be specific to fungal infection EST. More than 80 full-length fungal cDNA sequences were used to validate ab initio annotated gene model of M. oryzae genome sequence. Conclusion This study shows the power of ESTs to refine genome annotation and functional characterization. Results of this work have advanced our understanding of the molecular mechanisms underpinning fungal-plant interactions and formed the basis for new hypothesis. PMID:20146797

2010-01-01

212

Cesio-137 en suelos y plantas de Guatemala. (Cesium 137 in oils and plants from Guatemala).  

National Technical Information Service (NTIS)

Since 1990 the project of radioactive and environmental contamination started in Guatemala. Studies about the radioactive contamination levels are made within the framework of this project. Cesium-137 has been an interest radionuclide, because it is a fis...

R. E. Ayala, J. F. Perez

1993-01-01

213

Planta (1996)198:78-86 P l m a t ~ 9 Springer-Verlag1996  

E-print Network

layer of germinating cereal seeds (reviewed in Hooley 1994), in vegetative shoot tissue (Chory et al of GA-regulated genes focus on genes whose mRNAs are increased in abundance, studies of barley or wheat

Jacobsen, Steve

214

Implicaciones fisiológicas de la osmorregulación en plantas Physiological implications of osmoregulation in plants  

Microsoft Academic Search

Under natural conditions, the plants are exposed to changing environmental conditions that determine complex respuests that influence in the growth, development and productivity of the crops. The conditions of drought and salinity in the soils are the greater causes of stress in the crops and cause lost economic in the world agriculture. The drought as the salinity are osmotic stress

Loyla Rodríguez-Pérez

215

Physicochemical and degradative properties of in-planta re-structured potato starch  

Microsoft Academic Search

Starch re-structured directly in potato tubers by antisense suppression of starch branching enzyme (SBE), granule bound starch synthase (GBSS) or glucan water dikinase (GWD) genes was studied with the aim at disclosing the effects on resulting physico-chemical and enzyme degradative properties. The starches were selected to provide a combined system with specific and extensive alterations in amylose and covalently esterified

Hetti Arachchige Mangalika Wickramasinghe; Andreas Blennow; Takahiro Noda

2009-01-01

216

Floral benzenoid carboxyl methyltransferases: From in vitro to in planta function  

Microsoft Academic Search

Benzenoid carboxyl methyltransferases synthesize methyl esters (e.g., methyl benzoate and methyl salicylate), which are constituents of aromas and scents of many plant species and play important roles in plant communication with the surrounding environment. Within the past five years, eleven such carboxyl methyltransferases were isolated and most of them were comprehensively investigated at the biochemical, molecular and structural level. Two

Uta Effmert; Sandra Saschenbrecker; Jeannine Ross; Florence Negre; Chris M. Fraser; Joseph P. Noel; Natalia Dudareva; Birgit Piechulla

2005-01-01

217

Floral Benzenoid Carboxyl Methyltransferases: From in Vitro to in Planta Function  

Microsoft Academic Search

Benzenoid carboxyl methyltransferases synthesize methyl esters (e.g., methyl benzoate and methyl salicylate), which are constituents of aromas and scents of many plant species and play important roles in plant communication with the surrounding environment. Within the past five years, eleven such carboxyl methyltransferases were isolated and most of them were comprehensively investigated at the biochemical, molecular and structural level. Two

Uta Effmert; Sandra Saschenbrecker; Jeannine Ross; Florence Negre; Chris M. Fraser; Joseph P. Noel; Natalia Dudareva; Birgit Piechulla

2005-01-01

218

Evaluation of 12 ?-lactam antibiotics for Agrobacterium -mediated transformation through in planta antibacterial activities and phytotoxicities  

Microsoft Academic Search

The antibacterial activities of 12 ß-lactam antibiotics against Agrobacterium tumefaciens strains LBA4404 and EHA101 living in tobacco (Nicotiana tabacum L.) leaf tissues, and their phytotoxicities to tobacco leaf tissues were evaluated. All ß-lactams at minimum bactericidal concentration (MBC) or higher showed weak bactericidal activities against agrobacteria persisting in tobacco leaf tissues. The ß-lactams evaluated were classified into two major groups

Yoichi Ogawa; Masahiro Mii

2005-01-01

219

Subcellular Localization of Interacting Proteins by Bimolecular Fluorescence Complementation in Planta  

E-print Network

as internal transformation controls and markers of subcellular compartments. We demonstrate the utility-terminal YFP; cYFP, C-terminal YFP; GFP, green fluorescent protein; ECFP, enhanced cyan variant of GFP; EGFP, enhanced GFP; MCS, multi-cloning site; MP, movement protein; pSATN, modular satellite plasmids; Ca

Citovsky, Vitaly

220

SCIENTIFIC NOTE Plantas Hospedantes de Steneotarsonemus furcatus De Leon (Acari: Tarsonemidae) en Cuba  

Microsoft Academic Search

Steneotarsonemus furcatus De Leon is a well-known phytophagous tarsonemid mite commonly found on coconut. Little is known about its host range. This note brings a list of plants from which the mite was collected in Cuba. Brachiaria plantaginea (L.) Hitch, Digitaria decumbens Stewt., Digitaria sanguinalis (L.) Scop, Echinochloa colonum (L.) Link., Echinochloa crusgalli (L.), Eleusine indica (L.) Gaertn., Panicum fasciculatum

PEDRO DE LA TORRE; LÉRIDA ALMAGUEL; ELEAZAR BOTTA; E IDALIA CÁCERES

221

Plantas visitadas por abelhas africanizadas em duas localidades do estado de São Paulo  

Microsoft Academic Search

The knowledge of plants from a given region, as well as the blooming period and the pollen characteristics, help for the determination of the plant species which contribute for the honey composition. Plants visited by honey bees were listed during the period 1994 to 1997. The survey was carried out weekly, at different times and within a 300 m radius

Luís Carlos Marchini; Augusta Carolina de Camargo Carmell Moreti; Erica Weinstein Teixeira; Etelvina Conceição Almeida da Silva; Ricardo Ribeiro Rodrigues; Vinicius Castro Souza

2001-01-01

222

Gene Expression Biomarkers Provide Sensitive Indicators of in Planta Nitrogen Status in Maize[W][OA  

PubMed Central

Over the last several decades, increased agricultural production has been driven by improved agronomic practices and a dramatic increase in the use of nitrogen-containing fertilizers to maximize the yield potential of crops. To reduce input costs and to minimize the potential environmental impacts of nitrogen fertilizer that has been used to optimize yield, an increased understanding of the molecular responses to nitrogen under field conditions is critical for our ability to further improve agricultural sustainability. Using maize (Zea mays) as a model, we have characterized the transcriptional response of plants grown under limiting and sufficient nitrogen conditions and during the recovery of nitrogen-starved plants. We show that a large percentage (approximately 7%) of the maize transcriptome is nitrogen responsive, similar to previous observations in other plant species. Furthermore, we have used statistical approaches to identify a small set of genes whose expression profiles can quantitatively assess the response of plants to varying nitrogen conditions. Using a composite gene expression scoring system, this single set of biomarker genes can accurately assess nitrogen responses independently of genotype, developmental stage, tissue type, or environment, including in plants grown under controlled environments or in the field. Importantly, the biomarker composite expression response is much more rapid and quantitative than phenotypic observations. Consequently, we have successfully used these biomarkers to monitor nitrogen status in real-time assays of field-grown maize plants under typical production conditions. Our results suggest that biomarkers have the potential to be used as agronomic tools to monitor and optimize nitrogen fertilizer usage to help achieve maximal crop yields. PMID:21980173

Yang, Xiaofeng S.; Wu, Jingrui; Ziegler, Todd E.; Yang, Xiao; Zayed, Adel; Rajani, M.S.; Zhou, Dafeng; Basra, Amarjit S.; Schachtman, Daniel P.; Peng, Mingsheng; Armstrong, Charles L.; Caldo, Rico A.; Morrell, James A.; Lacy, Michelle; Staub, Jeffrey M.

2011-01-01

223

Examen Final de Metodos Numericos (I. Q.) Problemas Fecha: 25 de junio de 2008 Tiempo total: 3 horas  

E-print Network

. Problema 4 [3 puntos]. En una planta desaladora de agua de mar, una parte del agua que se toma para desalar a la normal. Dicha agua se vierte previamente en un dep´osito de volumen V = 800m3, con un caudal de r1 antes de devolverla al mar, se vierte en el dep´osito agua procedente directamente del mar con un caudal

Casanellas, Marta

224

Diatomaceous Earth Filtration of Giardia Cysts and Other Substances  

Microsoft Academic Search

Pilot-plant tests resulted in virtually 100 percent removals of Giardia lamblia cysts for both coarse and fine grades of diatomaceous earth over a wide range of conditions. Removals of turbidity and total coliform bacteria were functionally dependent on the grade of diatomaceous earth. Alum coating increased removal rates. Las pruebas en planta piloto dieron por resultado una extracción de virtualmente

Kelly P. Langé; William D. Bellamy; David W. Hendricks; Gary S. Logsdon

1986-01-01

225

Introduccin Un nmero creciente de estudios est  

E-print Network

(mutualismos) entre especies, concretamente las que se establecen entre muchas plantas y animales, promueven la invasiones vegetales y animales. Por otro lado, una vez integradas en la comunidad receptora, las especies flores o frutos y por animales polinizadores o dispersantes de semillas, respectivamente. Actualmente, es

Traveset, Anna

226

Invito stampa Tumori: una donazione d vita a una borsa per la ricerca  

E-print Network

rischio da esposizione a benzene l'attività di ricerca che si svolgerà presso il Laboratorio di Ingegneria, che sarà dedicata alla "Individuazione di priorità d'intervento nell'esposizione umana a benzene

227

Plantas con Flores: Claves para la Evolución de la Tierra y Para el Bienestar Humano  

NSDL National Science Digital Library

The issue-focused interview discusses how angiosperms, or flowering plants, are important because they hold clues to the evolutionary history of our planet, provide sources of food, medicine, and shelter to humans, and serve as food and habitat for many other organisms.

Pamela Soltis (University of Florida, Gainesville;)

2006-03-01

228

METODOLOGIA PARA ESTIMATIVA DO CRESCIMENTO DO FRUTO E DO VOLUME ABSOLUTO E RELATIVO DA PLANTA DO ALGODOEIRO1  

Microsoft Academic Search

The present paper had the objetive to imprive the knowledge for ecofisiological studies. With herbaceus cotton (Gossypium hirsutum L. r. latifolium Hutch.) taken into consideration a non destructive method to estimate the area and volume of the fruits that also had chlorophyll and take part actively is the photosyntesis as a modification in the method of Hozumi et al. (1955)

NOTAS CIENTÍFICAS; NAPOLEÃO ESBERARD DE MACÊDO; JOSÉ FIDELES FILHO

229

G. Leubner-Metzger et al.: -1,3-Glucanase and tobacco seed germination Planta (1996) 199: 282-288  

E-print Network

: 282-288 Effects of gibberellins, darkness and osmotica on endosperm rupture and class I �-1 November 1995 Abstract. The "Havana 425" cultivar of Nicotiana tabacum L. is photodormant. Gibberellins (e ­ Germination ­ Gibberellins - �-1,3-Glucanase ­ Photodormancy -Tobacco Abbreviations: ABA= cis

Leubner, Gerhard

230

Development of a Fusarium graminearum Affymetrix GeneChip for profiling fungal gene expression in vitro and in planta  

Microsoft Academic Search

Recently the genome sequences of several filamentous fungi have become available, providing the opportunity for large-scale functional analysis including genome-wide expression analysis. We report the design and validation of the first Affymetrix GeneChip microarray based on the entire genome of a filamentous fungus, the ascomycetous plant pathogen Fusarium graminearum. To maximize the likelihood of representing all putative genes (?14,000) on

Ulrich Güldener; Kye-Yong Seong; Jayanand Boddu; Seungho Cho; Frances Trail; Jin-Rong Xu; Gerhard Adam; Hans-Werner Mewes; Gary J. Muehlbauer; H. Corby Kistler

2006-01-01

231

Phylogeny of Nuclear-Encoded Plastid-Targeted Proteins Supports an Early Divergence of Glaucophytes within Plantae  

E-print Network

-membrane-bound photo- synthetic organelle. The result of the endosymbiosis was the emergence of the first. 2007]), shared components of the plastid protein import system (McFadden and van Dooren 2004), common

Bhattacharya, Debashish

232

In planta imaging of ?9-tetrahydrocannabinolic acid in Cannabis sativa L. with hyperspectral coherent anti-Stokes Raman scattering microscopy  

NASA Astrophysics Data System (ADS)

Nature has developed many pathways to produce medicinal products of extraordinary potency and specificity with significantly higher efficiencies than current synthetic methods can achieve. Identification of these mechanisms and their precise locations within plants could substantially increase the yield of a number of natural pharmaceutics. We report label-free imaging of ?9-tetrahydrocannabinolic acid (THCa) in Cannabis sativa L. using coherent anti-Stokes Raman scattering microscopy. In line with previous observations we find high concentrations of THCa in pistillate flowering bodies and relatively low amounts within flowering bracts. Surprisingly, we find differences in the local morphologies of the THCa-containing bodies: organelles within bracts are large, diffuse, and spheroidal, whereas in pistillate flowers they are generally compact, dense, and have heterogeneous structures. We have also identified two distinct vibrational signatures associated with THCa, both in pure crystalline form and within Cannabis plants; at present the exact natures of these spectra remain an open question.

Garbacik, Erik T.; Korai, Roza P.; Frater, Eric H.; Korterik, Jeroen P.; Otto, Cees; Offerhaus, Herman L.

2013-04-01

233

The Arabidopsis cysteine-rich protein GASA4 promotes GA responses and exhibits redox activity in bacteria and in planta.  

PubMed

Although the gibberellin (GA) signaling pathway has been elucidated, very little is known about the steps linking first transcriptional activation to physiological responses. Among the few identified GA-induced genes are the plant-specific GAST1-like genes, which encode small proteins with a conserved cysteine-rich domain. The role of these proteins in plant development and GA responses is not yet clear. The Arabidopsis GAST1-like gene family consists of 14 members, GASA1-14. Here we show that over-expression of the GA-induced GASA4 gene in Arabidopsis promoted GA responses such as flowering and seed germination. Suppression of several GASA genes using synthetic microRNA (miR(GASA) ) also promoted seed germination. This was probably caused by suppression of GASA5, which acts as a repressor of GA responses. Previously, we proposed that GAST1-like proteins are involved in redox reactions via their cysteine-rich domain. The results of this study support this hypothesis, as over-expression of GASA4 suppressed ROS accumulation and the transgenic seeds were partially resistant to the NO donor sodium nitroprusside (SNP). Moreover, Escherichia coli expressing intact GASA4 or a truncated version containing only the cysteine-rich domain were resistant to SNP. Mutated GASA4, in which conserved cysteines were replaced by alanines, lost its redox activity and the ability to promote GA responses, suggesting that the two functions are linked. We propose that GA induces some GAST1-like genes and suppresses others to regulate its own responses. We also suggest that the encoded proteins regulate the redox status of specific components to promote or suppress these responses. PMID:21143681

Rubinovich, Lior; Weiss, David

2010-12-01

234

Planta (1995)196:683-690 P l a n t a (62)Springer-Verlag1995  

E-print Network

by externally supplied nitrate was moni- tored in roots of intact Picea glauca (Moench) Voss. seedlings over a 5 - Nitrate (induction of uptake) - Nitrate reductase - Nitrogen-13 - Picea Abbreviations and symbol: [NO3 ]cy

Kronzucker, Herbert J.

235

Más Conceptos Erróneos a Evitar en la Enseñanza 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;)

2006-04-01

236

In planta production of the highly potent resveratrol analogue pterostilbene via stilbene synthase and O-methyltransferase co-expression  

SciTech Connect

Resveratrol and related stilbenes are thought to play important roles in defence responses in several plant species and have also generated considerable interest as nutraceuticals owing to their diverse health-promoting properties. Pterostilbene, a 3,5-dimethylether derivative of resveratrol, possesses properties similar to its parent compound and, additionally, exhibits significantly higher fungicidal activity in vitro and superior pharmacokinetic properties in vivo. Recombinant enzyme studies carried out using a previously characterized O-methyltransferase sequence from Sorghum bicolor (SbOMT3) demonstrated its ability to catalyse the A ring-specific 3,5-bis-O-methylation of resveratrol, yielding pterostilbene. A binary vector was constructed for the constitutive co-expression of SbOMT3 with a stilbene synthase sequence from peanut (AhSTS3) and used for the generation of stably transformed tobacco and Arabidopsis plants, resulting in the accumulation of pterostilbene in both species. A reduced floral pigmentation phenotype observed in multiple tobacco transformants was further investigated by reversed-phase HPLC analysis, revealing substantial decreases in both dihydroquercetin-derived flavonoids and phenylpropanoid-conjugated polyamines in pterostilbene-producing SbOMT3/AhSTS3 events. These results demonstrate the potential utility of this strategy for the generation of pterostilbene-producing crops and also underscore the need for the development of additional approaches for minimizing concomitant reductions in key phenylpropanoid-derived metabolites.

Rimando A. M.; Liu C.; Pan, Z.; Polashock, J. J.; Dayan, F. E., Mizuno, C. S.; Snook, M. E.; Baerson, S. R.

2012-04-01

237

In planta expression or delivery of potato aphid Macrosiphum euphorbiae effectors Me10 and Me23 enhances aphid fecundity.  

PubMed

The interactions between aphids and their host plants seem to be analogous to those of plant-microbial pathogens. Unlike microbial pathogen effectors, little is known about aphid effectors and their ability to interfere with host immunity. To date, only three functional aphid effectors have been reported. To identify potato aphid (Macrosiphum euphorbiae) effectors, we developed a salivary gland transcriptome using Illumina technology. We generated 85 million Illumina reads from salivary glands and assembled them into 646 contigs. Ab initio sequence analysis predicted secretion signal peptides in 24% of these sequences, suggesting that they might be secreted into the plant during aphid feeding. Eight of these candidate effectors with secretion signal peptides were functionally characterized using Agrobacterium tumefaciens-mediated transient overexpression in Nicotiana benthamiana. Two candidate effectors, Me10 and Me23, increased aphid fecundity, suggesting their ability to suppress N. benthamiana defenses. Five of these candidate effectors, including Me10 and Me23, were also analyzed in tomato by delivering them through the Pseudomonas syringae type three secretion system. In tomato, only Me10 increased aphid fecundity. This work identified two additional aphid effectors with ability to manipulate the host for their advantage. PMID:23194342

Atamian, Hagop S; Chaudhary, Ritu; Cin, Valeriano Dal; Bao, Ergude; Girke, Thomas; Kaloshian, Isgouhi

2013-01-01

238

In planta detection of Xanthomonas axonopodis pv. commiphorae using fyuA and rpoD genes.  

PubMed

Guggal is tapped for extraction of medicinally important oleo-gum-resin (guggul) by inoculating the stem bark with natural gum suspension containing pathogenic bacterium Xanthomonas axonopodis pv. commiphorae (Xac). The tree dies in the process. In absence of any specific medium for isolation of Xac, it is difficult to assess spread of the pathogen within the plant. A PCR based molecular detection technique usingfyuA and rpoD gene specific primers is described here. The primers amplified products only from Xac and not from host tissues or common saprophytes. The method was sensitive enough to produce positive signals for up to 4.4 bacterial cells or 2 pg target DNA per reaction mixture. However, PCR inhibitors present in plant tissues drastically reduced the limit of detection. A simple overnight incubation of surface sterilised plant tissues in nutrient medium was introduced to increase pathogen titre and to overcome this problem. This technique was successfully used to measure spread of Xac in plant tissues away from the site of inoculation. The pathogen showed preference for acropetal movement and did not spread to 7-8 cm below the site of inoculation till 15 days after inoculation. This suggests possibility to manage the disease through plant surgery. PMID:23926696

Samanta, Jatindra Nath; Mandal, Kunal

2013-06-01

239

ESTABLECIMIENTO DE LAS CONDICIONES ÓPTIMAS DE GERMINACIÓN DE EMBRIONES CIGÓTICOS DE PLANTAS DE CAFETO (Coffea arabica L.)  

Microsoft Academic Search

El café es uno de los productos agrícolas más importantes en el mercado internacional y uno de los cultivos tropicales perennes con mayor área cultivada en el mundo. Existen más de cien especies del género Coffea; pero desde el punto de vista comercial solamente Coffea arabica L y Coffea canephora Pierre son importantes. En Méxic o, el cafetal es uno

Unidad de Bioquímica; Centro de Investigación

240

MORFOLOGÍA DE PLANTA Y FENOLOGÍA DE GENOTIPOS DE CHILE HABANERO (CAPSICUM CHINENSE JACQ.) COLECTADOS EN YUCATÁN, MÉXICO  

Microsoft Academic Search

RESUMEN El cultivo de Chile habanero (Capsicum chinense Jacq.) en el estado de Yucatán ocupa el segundo lugar de importancia en cuanto a la superficie de siembra de hortalizas, después del tomate (Lycopersicum esculentum Mill.), debido a que en la actualidad se establecen entre 800 y 1000 has. Esta ha propiciado la introducción de semilla de regiones ajenas al estado

José Jorge Gerardo Trujillo-Aguirre; Omar Gutiérrez-Alonso; Capullo del Rocio Perez-Llanes

241

Overexpression of the rice carotenoid cleavage dioxygenase 1 gene in Golden Rice endosperm suggests apocarotenoids as substrates in planta  

Microsoft Academic Search

Carotenoids are converted by carotenoid cleavage dioxygenases that catalyze oxidative cleavage reactions leading to apocarotenoids.\\u000a However, apocarotenoids can also be further truncated by some members of this enzyme family. The plant carotenoid cleavage\\u000a dioxygenase 1 (CCD1) subfamily is known to degrade both carotenoids and apocarotenoids in vitro, leading to different volatile\\u000a compounds. In this study, we investigated the impact of

Andrea Ilg; Qiuju Yu; Patrick Schaub; Peter Beyer; Salim Al-Babili

2010-01-01

242

In planta transformation of pigeon pea: a method to overcome recalcitrancy of the crop to regeneration in vitro.  

PubMed

Development of transgenics in pigeon pea remains dogged by poor plant regeneration in vitro from transformed tissues and low frequency transformation protocols. This article presents a non-tissue culture-based method of generating transgenic pigeon pea (Cajanus cajan (L.) Millisp.) plants using Agrobacterium-Ti plasmid-mediated transformation system. The protocol involves raising of whole plant transformants (T0 plants) directly from Agrobacterium-infected young seedlings. The plumular and intercotyledonary meristems of the seedling axes are targeted for transformation. The transformation conditions optimized were, pricking of the apical and intercotyledonary region of the seedling axes of two-day old germinating seedlings with a sewing needle, infection with Agrobacterium (LBA4404/pKIWI105 carrying uid A and npt II genes) in Winans' AB medium that was added with wounded tobacco leaf extract, co-cultivation in the same medium for 1h and transfer of seedlings to soilrite for further growth and hardening and subsequent transfer of seedlings to soil in pots in the greenhouse. Out of the 22-25 primary transformants that survived infection-hardening treatments from each of the three experiments, 15 plants on the average established on the soil under greenhouse conditions, showed slow growth initially, nevertheless grew as normal plants, and flowered and set seed eventually. Of the several seeds harvested from all the T0 plants, six hundred were sown to obtain progeny (T1) plants and 350 of these were randomly analysed to determine their transgenic nature. PCR was performed for both gus (uid A) and npt II genes. Forty eight of the 350 T1 plants amplified both transgenes. Southern blot analysis substantiated the integration and transmission of these genes. The protocol ensured generation of pigeon pea transgenic plants with considerable ease in a short time and is applicable across different genotypes/cultivars of the crop and offers immense potential as a supplemental or an alternative protocol for generating transgenic plants of difficult-to-regenerate pigeon pea. Further, the protocol offers the option of doing away with a selection step in the procedure and so facilitates transformation, which is free of marker genes. PMID:23572898

Sankara Rao, K; Sreevathsa, Rohini; Sharma, Pinakee D; Keshamma, E; Udaya Kumar, M

2008-10-01

243

Proteins with high turnover rate in barley leaves estimated by proteome analysis combined with in planta isotope labeling.  

PubMed

Protein turnover is a key component in cellular homeostasis; however, there is little quantitative information on degradation kinetics for individual plant proteins. We have used (15)N labeling of barley (Hordeum vulgare) plants and gas chromatography-mass spectrometry analysis of free amino acids and liquid chromatography-mass spectrometry analysis of proteins to track the enrichment of (15)N into the amino acid pools in barley leaves and then into tryptic peptides derived from newly synthesized proteins. Using information on the rate of growth of barley leaves combined with the rate of degradation of (14)N-labeled proteins, we calculate the turnover rates of 508 different proteins in barley and show that they vary by more than 100-fold. There was approximately a 9-h lag from label application until (15)N incorporation could be reliably quantified in extracted peptides. Using this information and assuming constant translation rates for proteins during the time course, we were able to quantify degradation rates for several proteins that exhibit half-lives on the order of hours. Our workflow, involving a stringent series of mass spectrometry filtering steps, demonstrates that (15)N labeling can be used for large-scale liquid chromatography-mass spectrometry studies of protein turnover in plants. We identify a series of abundant proteins in photosynthesis, photorespiration, and specific subunits of chlorophyll biosynthesis that turn over significantly more rapidly than the average protein involved in these processes. We also highlight a series of proteins that turn over as rapidly as the well-known D1 subunit of photosystem II. While these proteins need further verification for rapid degradation in vivo, they cluster in chlorophyll and thiamine biosynthesis. PMID:25082890

Nelson, Clark J; Alexova, Ralitza; Jacoby, Richard P; Millar, A Harvey

2014-09-01

244

Inhibitory effect of Xenorhabdus nematophila TB on plant pathogens Phytophthora capsici and Botrytis cinerea in vitro and in planta.  

PubMed

Entomopathogenic bacteria Xenorhabdus spp. produce secondary metabolites with potential antimicrobial activity for use in agricultural productions. This study evaluated the inhibitory effect of X. nematophila TB culture on plant pathogens Botrytis cinerea and Phytophthora capsici. The cell-free filtrate of TB culture showed strong inhibitory effects (>90%) on mycelial growth of both pathogens. The methanol-extracted bioactive compounds (methanol extract) of TB culture also had strong inhibitory effects on mycelial growth and spore germinations of both pathogens. The methanol extract (1000??g/mL) and cell-free filtrate both showed strong therapeutic and protective effects (>70%) on grey mold both in detached tomato fruits and plants, and leaf scorch in pepper plants. This study demonstrates X. nematophila TB produces antimicrobial metabolites of strong activity on plant pathogens, with great potential for controlling tomato grey mold and pepper leaf scorch and being used in integrated disease control to reduce chemical application. PMID:24599183

Fang, Xiangling; Zhang, Manrang; Tang, Qian; Wang, Yonghong; Zhang, Xing

2014-01-01

245

ACTIVIDAD ANTIMICROBIANA, CONSERVANTE Y OBTENCIÓN DE UN COLORANTE NATURAL A PARTIR DE PLANTAS DE LA REGION DE BOYACA  

Microsoft Academic Search

The extraction and preliminary characterization of the present secondary metabolic in crust Grapefruit (Citrus Maxima) and the determination of its biological activity forehead to the Penicillum fungi ssp, Rhizopus ssp and cinerea Botrytis, in conditions of Laboratory like possible conservant activity. Also an nourishing natural colorant from the metanólic extraction of present antocianinas in the was obtained mora de castilla

RAMIREZ GONZALEZ; ADRIANA NEIRA GONZALEZ; LADY JOHANA CORREA

2007-01-01

246

In planta sequential hydroxylation and glycosylation of a fungal phytotoxin: Avoiding cell death and overcoming the fungal invader  

PubMed Central

To facilitate plant colonization, some pathogenic fungi produce phytotoxic metabolites that damage tissues; plants may be resistant to a particular pathogen if they produce an enzyme(s) that catalyzes detoxification of this metabolite(s). Alternaria blackspot is one of the most damaging and significant fungal diseases of brassica crops, with no source of resistance known within the Brassica species. Destruxin B is the major phytotoxin produced by the blackspot-causing fungus, Alternaria brassicae (Berkley) Saccardo. We have established that a blackspot-resistant species (Sinapis alba) metabolized 14C-labeled destruxin B to a less toxic product substantially faster than any of the susceptible species. The first metabolite, hydroxydestruxin B (14C-labeled), was further biotransformed to the ?-d-glucosyl derivative at a slower rate. The structures of hydroxydestruxin B and ?-d-glucosyl hydroxydestruxin B were deduced from their spectroscopic data [NMR, high resolution (HR)-MS, Fourier transform infrared (FTIR)] and confirmed by total chemical synthesis. Although these hydroxylation and glucosylation reactions occurred in both resistant (S. alba) and susceptible (Brassica napus, Brassica juncea, and Brassica rapa) species, hydroxylation was the rate limiting step in the susceptible species, whereas glucosylation was the rate limiting step in the resistant species. Remarkably, it was observed that the hydroxydestruxin B induced the biosynthesis of phytoalexins in blackspot-resistant species but not in susceptible species. This appears to be a unique example of phytotoxin detoxification and simultaneous phytoalexin elicitation by the detoxification product. Our studies suggest that S. alba can overcome the fungal invader through detoxification of destruxin B coupled with production of phytoalexins. PMID:11149945

Pedras, M. S. C.; Zaharia, I. L.; Gai, Y.; Zhou, Y.; Ward, D. E.

2001-01-01

247

Cdigos UNESCO: 241712 241714 2407 Frecuencia del curso: Anual BIOLOGA DE LA REPRODUCCIN EN PLANTAS SUPERIORES. IMPLICACIONES AGRONMICAS Y  

E-print Network

meristemo: genes homeóticos. Mutantes de la inducción floral. Determinación del sexo. Flores hermafroditas, monoicas y dioicas. Mecanismos para evitar la endogamia. Mecanismos genéticos de determinación del sexo. II

248

A report on a comprehensive series of experiments, both in vitro and in planta, to develop treatments for Phytophthora  

E-print Network

in the U.S. since Dutch Elm Disease. Although it was first observed around the San Francisco Bay Area the cambium of main stems, while on a wide range of other hosts it simply causes leaf spots , leaf blight

California at Berkeley, University of

249

Mutations in the Arabidopsis peroxisomal ABC transporter COMATOSE allow differentiation between multiple functions in planta: insights from an allelic series.  

PubMed

COMATOSE (CTS), the Arabidopsis homologue of human Adrenoleukodystrophy protein (ALDP), is required for import of substrates for peroxisomal beta-oxidation. A new allelic series and a homology model based on the bacterial ABC transporter, Sav1866, provide novel insights into structure-function relations of ABC subfamily D proteins. In contrast to ALDP, where the majority of mutations result in protein absence from the peroxisomal membrane, all CTS mutants produced stable protein. Mutation of conserved residues in the Walker A and B motifs in CTS nucleotide-binding domain (NBD) 1 resulted in a null phenotype but had little effect in NBD2, indicating that the NBDs are functionally distinct in vivo. Two alleles containing mutations in NBD1 outside the Walker motifs (E617K and C631Y) exhibited resistance to auxin precursors 2,4-dichlorophenoxybutyric acid (2,4-DB) and indole butyric acid (IBA) but were wild type in all other tests. The homology model predicted that the transmission interfaces are domain-swapped in CTS, and the differential effects of mutations in the conserved "EAA motif" of coupling helix 2 supported this prediction, consistent with distinct roles for each NBD. Our findings demonstrate that CTS functions can be separated by mutagenesis and the structural model provides a framework for interpretation of phenotypic data. PMID:19019987

Dietrich, Daniela; Schmuths, Heike; De Marcos Lousa, Carine; Baldwin, Jocelyn M; Baldwin, Stephen A; Baker, Alison; Theodoulou, Frederica L; Holdsworth, Michael J

2009-01-01

250

SÍNTESIS Y CARACTERIZACIÓN DE MATERIALES ZEOLÍTICOS A PARTIR DE EXTRACTOS ETANÓLICOS DEL TALLO DE LA PLANTA EQUISETUM GIGANTEUM  

Microsoft Academic Search

Zeolite-type microporous materials have been synthesized using structure directing agents (SDA) present in the ethanolic extracts of the stem as well as the stem itself of the plant Equisetum giganteum. Materials crystallized in the interstices of the stem of the plant were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Si\\/Al ratio of the synthesized solids was determined

F. J. López; S. Márquez; O. González; A. Mora; J. G. Lanza

251

Remote sensing of gene expression in Planta: transgenic plants as monitors of exogenous stress perception in extraterrestrial environments  

NASA Technical Reports Server (NTRS)

Transgenic arabidopsis plants containing the alcohol dehydrogenase (Adh) gene promoter fused to the green fluorescent protein (GFP) reporter gene were developed as biological sensors for monitoring physiological responses to unique environments. Plants were monitored in vivo during exposure to hypoxia, high salt, cold, and abcissic acid in experiments designed to characterize the utility and responses of the Adh/GFP biosensors. Plants in the presence of environmental stimuli that induced the Adh promoter responded by expressing GFP, which in turn generated a detectable fluorescent signal. The GFP signal degraded when the inducing stimulus was removed. Digital imaging of the Adh/GFP plants exposed to each of the exogenous stresses demonstrated that the stress-induced gene expression could be followed in real time. The experimental results established the feasibility of using a digital monitoring system for collecting gene expression data in real time from Transgenic Arabidopsis Gene Expression System (TAGES) biosensor plants during space exploration experiments.

Manak, Michael S.; Paul, Anna-Lisa; Sehnke, Paul C.; Ferl, Robert J.

2002-01-01

252

A visual identification key utilizing both gestalt and analytic approaches to identification of Carices present in North America (Plantae, Cyperaceae)  

PubMed Central

Abstract Images are a critical part of the identification process because they enable direct, immediate and relatively unmediated comparisons between a specimen being identified and one or more reference specimens. The Carices Interactive Visual Identification Key (CIVIK) is a novel tool for identification of North American Carex species, the largest vascular plant genus in North America, and two less numerous closely-related genera, Cymophyllus and Kobresia. CIVIK incorporates 1288 high-resolution tiled image sets that allow users to zoom in to view minute structures that are crucial at times for identification in these genera. Morphological data are derived from the earlier Carex Interactive Identification Key (CIIK) which in turn used data from the Flora of North America treatments. In this new iteration, images can be viewed in a grid or histogram format, allowing multiple representations of data. In both formats the images are fully zoomable. PMID:24723777

2013-01-01

253

A secreted lipolytic enzyme from Xanthomonas campestris pv. vesicatoria is expressed in planta and contributes to its virulence.  

PubMed

A recombinase-based in vivo expression technology (RIVET) approach with Xanthomonas campestris pv. vesicatoria (Xcv) revealed that lipA, annotated as putative secreted lipase, is expressed during the interaction between this pathogen and tomato. Here, the tnpR and uidA reporter genes were used to show that lipA is strongly induced in XVM2 minimal medium and during the early stages of tomato infection by Xcv. A mutant strain impaired in lipA was generated by insertional mutagenesis. This mutant grew in a similar manner to the wild-type in rich medium, but its growth was significantly compromised in a medium containing olive oil as a single carbon source. The lipolytic activity of the extracellular fraction of the lipA mutant was reduced significantly relative to that of the wild-type strain, thus confirming that lipA indeed encodes a functional secreted enzyme with lipolytic activity. A plasmid carrying a wild-type copy of lipA complemented the lipA mutant for extracellular lipolytic activity. Dip inoculation experiments with tomato lines Hawaii 7998 (H7998) and Micro Tom showed that the lipA mutant grew to a lesser extent than the wild-type in tomato leaves. Following leaf syringe infiltrations, the mutant strain induced disease symptoms that were less severe than those induced by the wild-type strain, supporting a significant role of lipA in the pathogenicity of Xcv. PMID:22176521

Tamir-Ariel, Dafna; Rosenberg, Tally; Navon, Naama; Burdman, Saul

2012-08-01

254

Inhibitory effect of Xenorhabdus nematophila TB on plant pathogens Phytophthora capsici and Botrytis cinerea in vitro and in planta  

PubMed Central

Entomopathogenic bacteria Xenorhabdus spp. produce secondary metabolites with potential antimicrobial activity for use in agricultural productions. This study evaluated the inhibitory effect of X. nematophila TB culture on plant pathogens Botrytis cinerea and Phytophthora capsici. The cell-free filtrate of TB culture showed strong inhibitory effects (>90%) on mycelial growth of both pathogens. The methanol-extracted bioactive compounds (methanol extract) of TB culture also had strong inhibitory effects on mycelial growth and spore germinations of both pathogens. The methanol extract (1000??g/mL) and cell-free filtrate both showed strong therapeutic and protective effects (>70%) on grey mold both in detached tomato fruits and plants, and leaf scorch in pepper plants. This study demonstrates X. nematophila TB produces antimicrobial metabolites of strong activity on plant pathogens, with great potential for controlling tomato grey mold and pepper leaf scorch and being used in integrated disease control to reduce chemical application. PMID:24599183

Fang, Xiangling; Zhang, Manrang; Tang, Qian; Wang, Yonghong; Zhang, Xing

2014-01-01

255

A rapid infection assay for Armillaria and real-time PCR quantitation of the fungal biomass in planta.  

PubMed

Slow and unreliable infection in the greenhouse has been a barrier to research on Armillaria root disease. The existing infection assay takes 7-18 months for detectable infection, during which time the inoculum often dies, resulting in unequal challenge among plants. Because symptom expression and mortality are rare, presence or absence of infection, determined by culturing, is the only datum derived from the existing infection assay. This limits both routine comparisons of strain virulence and complex investigations of pathogenesis, neither of which have been done for Armillaria mellea. We tested a new infection assay, in which grape rootstocks growing in tissue culture medium are inoculated, and compared to rootstocks previously characterized from the existing infection assay as tolerant (Freedom) or susceptible (3309C). Culture media of 25 plants per rootstock was inoculated and five plants per rootstock were harvested 0, 2, 4, 6, and 8 weeks postinoculation; the experiment was completed twice. Confocal microscopy and quantitative PCR (Q-PCR) were used to quantify infection. Roots were treated with WGA-AlexaFluor488, hyphae and roots were scanned on green and red channels on a confocal microscope, and percent root colonization was quantified. A fungal gene (EF1?) was determined to have a single copy in A. mellea, and both EF1? and a single-copy grape gene (UFGT) were amplified by Q-PCR; fungal DNA: plant DNA served as a measure of fungal biomass. Armillaria was detected by culture, microscopy, and Q-PCR starting 2 weeks postinoculation from all inoculated plants, demonstrating that the new infection assay is rapid and plants do not escape infection. Our findings of higher percent root colonization (as measured by microscopy) of 3309C than Freedom at all harvests (P<0.0001), consistently higher fungal biomass (as measured by Q-PCR) of 3309 than Freedom, and a significant positive correlation between percent root colonization and fungal biomass (P=0.01) suggests that the quantitative methods of our new assay give similar results to the qualitative method of the existing infection assay. PMID:20965067

Baumgartner, Kendra; Bhat, Ravi; Fujiyoshi, Phillip

2010-01-01

256

EL PROBLEMA DE LA CONSERVACIN DE LA FLORA Y FAUNA EN LATINOAMERICA  

E-print Network

desaparición de los bosques y animales. Pero no por ello somos inmunes a la transformación que se opera en nuestras tierras. Muchos se preguntarán, qué objeto tiene salvar a nuestros animales y a nuestras plantas animales de tiro, no prestan una solución a nuestro desarrollo industrial al menos no en forma inmediata ni

Entekhabi, Dara

257

Cambie los cabezales y los escusados viejos para  

E-print Network

1 Cambie los cabezales y los escusados viejos para conservar más agua Sea conciente del uso del agua cada día y ahorre donde pueda 4 3 5 Cambieloscabezales deducha/regadera Cambie su lavadora por una la cocina, el baño, y el jardín para no perder el agua Siembre en su jardín plantas nativas que

258

cyberPRINT: Hacia una Arquitectura del Ser  

Microsoft Academic Search

This project involves the design, construction and performance of an ìarchitecture of beingî that expresses selfhood in virtual space and real time using: (1) physiological data as its building material, (2) architectural design as its expressive intent, (3) digital space as its medium, (4) screen projection as its enveloping and viewing technique, (5) user interactivity and performance as its partner,

Julio Bermudez; Jim Agutter; Brent Lilly; Noah Syroid; Dwayne Westenskow; Debra Gondeck-Becker; Stefano Foresti; Yacov Sharir

259

Una nueva visión de la degradación del almidón  

Microsoft Academic Search

All plant cells synthesize and degrade starch in determined stage of their development. There are, however, important differences related to its use. In leaves, starch is produced and accumulated at day while it is degraded at night to provide carbon maintaining cellular processes. This means that the pathway regulation is integrated to the whole plant metabolism. Starch degradation is a

Lilia Bernal; Eleazar Martínez-Barajas

260

Películas barrera: Una opción contra la carbonatación del concreto reforzado  

Microsoft Academic Search

Corrosion of reinforced concrete is the key factor in service life reduction of reinforced concrete structures and elements. In non marine tropical environments, carbonation of concrete induces afterward corrosion of the reinforcing steel, being the main corrosion mechanism in reinforced concrete. The aim of this investigation was to evaluate the efficiency of the commercially available types of paint (alkyd, acrylic,

Serrano Ixtepan

2006-01-01

261

www.apre.it Come presentare una proposta di  

E-print Network

100 60 300 198 2288 1589.5 #12;ESEMPIO: PROGETTO RESEARCH AND INNOVATION ACTION HORIZON 2020 7 ESEMPIO: PROGETTO INNOVATION ACTION HORIZON 2020 #12;CRITERI DI SELEZIONE E ATTRIBUZIONE (Art. 14 contributo UE in H2020 sarà faviorevole: Direct costs Indirect costs Total costs % EU contribution EU

Di Pillo, Gianni

262

C/1999 S4 (LINEAR): la morte di una cometa  

NASA Astrophysics Data System (ADS)

The comet C/1999 S4 was expected to be a moderately bright object during summer 2000. It was observed by visual, photographic and CCD techniques. The derived light curve shows that the comet reached a brightness maximum (mag. 6 around July 26) corresponding to the total dissolution of its nucleus. From the analysis of the light curve a double maximum was detected, the dissolution event appearing to start around July 20. Several morphological changes were also observed during the apparition in relation to partial fragmentation events. The comet aspect completely changed during the final disruption. Relevant changes in the plasma tail were observed and they are probably related both to the activity of the nucleus and to the solar wind. A perspective anti-tail was detected in early July.

Foglia, Sergio; Ligustri, Rolando; Milani, Giannantonio

2002-01-01

263

Collomia linearis Nutt. Una Polemoniacea nordamericana avventizia nel Bellunese  

Microsoft Academic Search

Collomia linearis Nutt. (Polemoniaceae) naturalized near Belluno, Northern Italy. – Collomia linearis Nutt., a North American Poleomoniacea, has been found naturalized in the gravelly stream-bed of the Pettorina, near Rocca Pietore (province of Belluno), at about 1200 m on s.l. The Pettorina is a seasonal stream and quite without water during the main part of the year. Most of its

Erika Pignatti Wikus

1973-01-01

264

Embarazo heterotópico diagnosticado en una cesárea a término  

Microsoft Academic Search

The incidence of heterotopic pregnancy is increasing as a result of the greater use of assisted reproduction techniques. Early diagnosis is important because a ruptured ectopic pregnancy can be life threatening. We present an atypical case of extrauterine pregnancy diagnosed during the course of an elective cesarean section at term.

Miguel Aragón Albillos; Ana Fernández Alonso; María Felicidad López Gallego; Gabriel Fiol Ruiz; Miguel Ángel Fernández Soriano; Francisco Alonso Aragón

2011-01-01

265

¿CÓMO SABER QUE TENEMOS UNA GESTIÓN DE PROYECTOS EFECTIVA?  

Microsoft Academic Search

El sector de las PyMes es uno de los sectores de crecimiento económico más importante para Latinoamérica, y la tendencia mundial hacia la globalización y la erradicación de las fronteras geográficas, ha empezado a obligar a este sector a crear nuevas estrategias de competencia en un entorno cada vez más cambiante, competitivo y exigente. En este orden, los gobiernos vienen

Esperanza Aguillón Robles; Lourdes García Ávila; Ruth Vargas Rivera; José Cuitláhuac Guzmán Hdez; Luis Calderón Aguirre

2008-01-01

266

Diseño de una nueva herramienta para la exploración auditiva  

Microsoft Academic Search

IntroductionMany presbycusic patients have difficulty in understanding certain words. This could be justified because certain sounds in Spanish are more difficult to perceive, particularly the sounds with energy in the high frequencies. We propose to use a sentence as a tool to check this theory.

Antonio Rodríguez Valiente; Carolina Pérez Sanz; Carmen Górriz; Adoración Juárez; Marc Monfort; José R. García Berrocal; Juana Gil Fernández; Rafael Ramírez Camacho

2009-01-01

267

MINA NUEVA, UNA ALTERNATIVA DE CRECIMIENTO EN SANTA BÁRBARA CHIH  

Microsoft Academic Search

As a result of the strategic actions, given from 2007 to date which consisted in carrying on an aggressive exploration program that included mining work and diamond drilling from which the expected result was to increment the mineral reserves as well as to incorporate new areas for the mining operation, a new mining area was located. When analyzing the results,

JOSÉ PORFIRIO; PÉREZ GUZMÁN

268

Una mirada hacia el pasado -- El Telescopio Espacial James Webb  

NASA Video Gallery

La NASA planea usar el nuevo Telescopio Espacial James Webb para mirar el pasado. Al observar la luz de las estrellas que se formaron al principio del universo, la NASA está a punto de arrojar nuev...

269

ATRIBUIBLE A UNA ESTACIÓN DE TRANSFERENCIA DE DESECHOS SÓLIDOS MUNICIPALES  

Microsoft Academic Search

Due to the great volume of municipal solid waste that is produced daily in the Metropolitan Area of Mexico City a sound management has been an imposible task This is why during thepastfavyears solid waste transfer stations lzave been consbucted in the City, allowing a more eficient solid waste collectwn. The attributable risk to the population's health for the operation

CARLOS SANTOS-BURGOA; M. EN

270

NIÑOS COLOMBIANOS: ASI NACE ELFUTURO UNA VISION DESDE LA PSICOLOGIA  

Microsoft Academic Search

A researchproject concerning the ellaboration of the sense of reality in 4 to 7 year old children from poverty areas, is presented, The investigation is based on the Project Atlantic Coast (Barranquilla, Colombia). A total of 1,005 children were ineluded. The fol1owing concepts were studied in the children: beauty, kindness, money, authority, death, work, friendship, family, happiness, school, health, gender,

KARY CABRERA; CONSUELO ANGARITA

271

El rastro de Elena Garro: Una mirada feminista  

E-print Network

Elena Garro maps out roles, fears, and expectations so the reader or audience of her play can empathize with the characters’ psychological and deeply rooted cultural conflicts. A Greek style chorus portrays a version of macho identity motivating...

Rosas Lopá tegui, Patricia

2002-04-01

272

Trombosis venosa profunda como marcador de recidiva de una neoplasia  

Microsoft Academic Search

Background and objectiveThere is a bidirectional association between neoplasia and venous thromboembolism (VTE). However, whether this association has an impact in tumor recurrence is unknown. The aim of the study is to assess the incidence of cancer recurrence after diagnosis of VTE and determine if VTE could be a marker for cancer recurrence.

Montserrat Blanch Alerany; Mariona Calvo Campos; Antonio Romera Villegas; Antonio Pérez-Piqueras Gómez; Santiago Riera Batalla; Marc Antoni Cairols Castellote

2009-01-01

273

modelado y analisis del transporte del herbicida glifosato en una ...  

E-print Network

tools for the study of water and contaminant transport in the unsaturated zone. This paper presents ... Tests were designed to. characterize the ... laboratory and field data. RESUMEN ..... donde t1 2/ es la vida-mitad (half-life) del contaminante. El parámetro t1 2/ .... En Soil Science Society of America Journal, 44, 892-898.

(Tom N. Jagatic)

274

Una Perspectiva de Mexico: Its People, Places and History.  

ERIC Educational Resources Information Center

Evolving from a general commitment to the goals of cultural pluralism and bicultural education, this portfolio of 24 full color and halftone photographs aims to reinforce those curricular objectives which emphasize a respect for the value and individuality of different cultures and groups, affirm the right of an individual to maintain a bicultural…

Bianchi, Gary; Bianchi, Maria Eugenia Matute

275

Una nueva estimación astrosismológica de la masa del axión  

NASA Astrophysics Data System (ADS)

G117-B15A and R548 are the two pulsating white dwarf stars more studied within the class of ZZ Ceti variables (atmospheres rich in H). In this work, we present new asteroseismological models for G117-B15A and R548, and employ the rates of period changes with time for the dominant modes of these stars in order to place new constraints on the axion mass. FULL TEXT IN SPANISH

Córsico, A. H.; Althaus, L. G.; Romero, A. D.

276

Estudio de la dinámica de una fulguración de clase M.  

NASA Astrophysics Data System (ADS)

In this work we analize the compact flare of May 9, 2012, at 12:21 UT using data in different wavelenghts, including images obtained with the H-Alpha Solar Telescope for Argentina (HASTA). We identify the brightenings, their location with respect to the photospheric magnetic field, and the presence of a surge after the flare impulsive phase. We interprete the observations and the presence of cold loops after the flare in terms of the location of the energy release site. We estimate the height and length of the loops through which the surge material flows. FULL TEXT IN SPANISH

Luoni, M. L.; Francile, C.; Mandrini, C. H.

277

ORGANIZZAZIONE DI UNA DAY SURGERY PER LA CHIRURGIA DELLA MANO  

Microsoft Academic Search

Day Surgery's organization for surgery of the hand. SUMMARY Day Surgery (DS) means executing an operation in daily hospitalization, usually in local anaesthesia. According to the regulations in force, suitable structures and patterns are organized as unities or as traditional structures or dedi- cated beds. Patients are adults in good health, with a standardized disease (carpal tunnel syndrome, trigger finger,

R. MELE; P. L. MERLO; A. FERRAMOSCA

278

Narcotráfico, violencia y desigualdad: una hipótesis para el caso colombiano  

Microsoft Academic Search

El propósito del ensayo es analizar los factores que explican la violencia en Colombia; para ello, el autor, retoma elementos fundamentalmente en el neoinstitucionalismo, en el narcotráfico y en la desigualdad. González, después de explorara los tres elementos antes enunciados, plantea la hipótesis de que la desigualdad es, a su juicio, el factor que más se aproxima para interpretar la

Jorge Iván González

2001-01-01

279

La iniciativa Open Access, una visión de conjunto  

Microsoft Academic Search

From ancient times to the Millenium Development Goals Declaration, the issue of Access to Informa- tion has been essential to the world economic and social development and should be tackled as a right inherent to human beings. The Open Access movement contributes to giving the scientific community the hegemony they deserve by facili- tating the use of relevant scientific literature

Javier Sanz-Valero; Marcelo José D'Agostino; Luis David Castiel; Jorge Veiga de Cabo

2007-01-01

280

INTRODUCCIN El tritn ibrico (Lissotriton boscai) es una espe-  

E-print Network

, así como el número total de huevos puestos en relación al número de días de perma- nencia en el agua correlation between female and eggs size was found in either species. Palmate newts laid more eggs daily than- yos and larvae of palmate newt completed development faster than Bosca´s newt. KEY WORDS: Amphibia

Galán, Pedro

281

Neurocirugía radiodirigida: una aplicación novedosa de la Medicina Nuclear  

Microsoft Academic Search

Brain tumours show uptake with Thallium-201 Chloride with high target\\/background rate and they would benefit from radioguided surgery. We report a patient with a brain tumor that was Thallium positive in a brain SPECT. On the next day in the operating room we injected 50 MBq of Thallium-201. At 40 minutes we confirmed tumour uptake with a gamma-probe and with

J. Serrano; J. I. Rayo; J. R. Infante; M. L. Domínguez; L. Lorenzana; J. L. Porras; J. M. Cabezudo; L. García-Bernardo; R. Sánchez-Sánchez

2006-01-01

282

Aproximación epistemológica de la conciencia en psicología: una perspectiva comportamental  

Microsoft Academic Search

This paper presents an overview of the study of consciousness and how it may be viewed from a behavioral standpoint. Behavior analysis' main contributions are discussed and compared with the other major approaches to consciousness. The first sections focus on the conceptual and empirical issues associated with the concept of consciousness. The next sections are devoted to discussing a behavioral

Edgar Salgado García

2003-01-01

283

Derechos humanos, una oportunidad para las políticas públicas en salud  

Microsoft Academic Search

Human rights outlined a better scenario for public policies in health. For it requires intersectoral and interdisciplinary approach. This article emphasizes the perspective of public health policies based on human rights, clarifies the relationship of public policies with the exercise of human rights, beyond the right to health. It recognizes the need to implement genuinely democratic and participatory mechanisms.It considers

Álvaro Franco-Giraldo; Carlos Álvarez-Dardet

2008-01-01

284

Los derechos de los pacientes: una cuestión de calidad  

Microsoft Academic Search

Patients’ rights first arose as a question of quality from the perspective of users themselves in the United States, a cultural environment that differs from our own. This contextual difference led to difficulties in implementing and understanding patients’ rights in Spain.Patients’ rights are the specification of human rights in the management of the patient's own body and are one more

Pablo Hernando

2005-01-01

285

Termodinamica del universo temprano desde una cosmolog\\`Ia newtoniana  

E-print Network

We study a model of fluent material universe from a modified Newtonian cosmology proposed by D'Inverno and Tawfik. From this perspective, it shows a list of space-time curvature k with energy E, density \\rho, specific heat $C_{p}$ and the fluid temperature gradient considered $\\Delta T$ corresponding to standard thermodynamic variables. We determined the coupling constants accompanying the matter density for different values we can take k

C, W A Rojas

2011-01-01

286

Termodinamica del universo temprano desde una cosmologÌa newtoniana  

E-print Network

We study a model of fluent material universe from a modified Newtonian cosmology proposed by D'Inverno and Tawfik. From this perspective, it shows a list of space-time curvature k with energy E, density \\rho, specific heat $C_{p}$ and the fluid temperature gradient considered $\\Delta T$ corresponding to standard thermodynamic variables. We determined the coupling constants accompanying the matter density for different values we can take k

W. A. Rojas C

2011-10-18

287

Aplicacin de una metodologa paraAplicacin de una metodologa para modelacin de medios fracturados enmodelacin de medios fracturados en  

E-print Network

;� Geolog�a estructural, cartograf�as en superficie y descripci�n de estructuras identificadas en sondeos sondeos flow-logging, interferencia, bombeo desde la mina... Para identificar estructuras: RATONES�NIDENTIFICACI�N DE LASDE LAS PRINCIPALES ESTRUCTURASPRINCIPALES ESTRUCTURAS #12;RATONES:RATONES: Cartograf

Politècnica de Catalunya, Universitat

288

Misura di mobilit delle molecole lipidiche Si "costruisce" una molecola lipidica con una testa che contiene uno "spin label"  

E-print Network

immobilizzandole parzialmente #12;Table 10-1. Approximate Lipid Compositions of Different Cell Membranes PERCENTAGE OF TOTAL LIPID BY WEIGHT LIPID LIVER CELL PLASMA MEMBRANE RED BLOOD CELL PLASMA MEMBRANE MYELIN microdomini (lipid rafts) di dimensioni ~70nm in diametro. Poichè i lipidi concentrati nei lipid rafts sono

Morante, Silvia

289

Mecanismo(s) de Acción de las Auxinas y los Herbicidas Auxínicos - Parte 1- Introducción  

NSDL National Science Digital Library

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales utilizando herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso más ampliamente distribuidas e importantes. Estos herbicidas fueron los primeros herbicidas orgánicos desarrollados que presentaron selectividad; es decir, capaces de matar un cierto grupo de plantas sin afectar a otros grupos (por ejemplo: matar plantas de hoja ancha pero no las de hoja angosta; en este documento se utilizará el término "gramíneas" para referirse a las plantas de hoja angosta o cereales). En esta lección se presentarán las principales características de los herbicidas auxínicos, se discutirán sus principales usos y se describirán los síntomas de daño que causan. De igual forma, se indicará la forma en que estos herbicidas matan a las plantas sensibles.

290

Seed development and maturation in early spring-flowering Galanthus nivalis and Narcissus pseudonarcissus continues post-shedding with little evidence of maturation in planta  

PubMed Central

Background and Aims Seeds of the moist temperate woodland species Galanthus nivalis and Narcissus pseudonarcissus, dispersed during spring or early summer, germinated poorly in laboratory tests. Seed development and maturation were studied to better understand the progression from developmental to germinable mode in order to improve seed collection and germination practices in these and similar species. Methods Phenology, seed mass, moisture content and ability to germinate and tolerate desiccation were monitored during seed development until shedding. Embryo elongation within seeds was investigated during seed development and under several temperature regimes after shedding. Key Results Seeds were shed at high moisture content (>59 %) with little evidence that dry mass accumulation or embryo elongation were complete. Ability to germinate developed prior to the ability of some seeds to tolerate enforced desiccation. Germination was sporadic and slow. Embryo elongation occurred post-shedding in moist environments, most rapidly at 20 °C in G. nivalis and 15 °C in N. pseudonarcissus. The greatest germination also occurred in these regimes, 78 and 48 %, respectively, after 700 d. Conclusions Seeds of G. nivalis and N. pseudonarcissus were comparatively immature at shedding and substantial embryo elongation occurred post-shedding. Seeds showed limited desiccation tolerance at dispersal. PMID:23478943

Newton, Rosemary J.; Hay, Fiona R.; Ellis, Richard H.

2013-01-01

291

LOS LABORATORIOS DE ANÁLISIS DE SUELOS Y FOLIARES EN COSTA RICA: INFORME DEL COMITÉ DE LABORATORIOS DE ANÁLISIS DE SUELOS, PLANTAS Y AGUAS1  

Microsoft Academic Search

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

Marco Corrales; Floria Bertsch; José Antonio Bejarano

292

Investigations of the in Planta Expression of Active Cellobiohydrolase I: Cooperative Research and Development Final Report, CRADA Number CRD-07-219  

SciTech Connect

It was the purpose of this project to determine if cellulases produced in transgenic plants could effectively be utilized in the production of ethanol and other feedstock chemicals from lignocellulosic substrates.

Himmel, M.

2011-02-01

293

Time-Resolved Fluorescence Imaging Reveals Differential Interactions of N-Glycan Processing Enzymes across the Golgi Stack in Planta1[W][OA  

PubMed Central

N-Glycan processing is one of the most important cellular protein modifications in plants and as such is essential for plant development and defense mechanisms. The accuracy of Golgi-located processing steps is governed by the strict intra-Golgi localization of sequentially acting glycosidases and glycosyltransferases. Their differential distribution goes hand in hand with the compartmentalization of the Golgi stack into cis-, medial-, and trans-cisternae, which separate early from late processing steps. The mechanisms that direct differential enzyme concentration are still unknown, but the formation of multienzyme complexes is considered a feasible Golgi protein localization strategy. In this study, we used two-photon excitation-Förster resonance energy transfer-fluorescence lifetime imaging microscopy to determine the interaction of N-glycan processing enzymes with differential intra-Golgi locations. Following the coexpression of fluorescent protein-tagged amino-terminal Golgi-targeting sequences (cytoplasmic-transmembrane-stem [CTS] region) of enzyme pairs in leaves of tobacco (Nicotiana spp.), we observed that all tested cis- and medial-Golgi enzymes, namely Arabidopsis (Arabidopsis thaliana) Golgi ?-mannosidase I, Nicotiana tabacum ?1,2-N-acetylglucosaminyltransferase I, Arabidopsis Golgi ?-mannosidase II (GMII), and Arabidopsis ?1,2-xylosyltransferase, form homodimers and heterodimers, whereas among the late-acting enzymes Arabidopsis ?1,3-galactosyltransferase1 (GALT1), Arabidopsis ?1,4-fucosyltransferase, and Rattus norvegicus ?2,6-sialyltransferase (a nonplant Golgi marker), only GALT1 and medial-Golgi GMII were found to form a heterodimer. Furthermore, the efficiency of energy transfer indicating the formation of interactions decreased considerably in a cis-to-trans fashion. The comparative fluorescence lifetime imaging of several full-length cis- and medial-Golgi enzymes and their respective catalytic domain-deleted CTS clones further suggested that the formation of protein-protein interactions can occur through their amino-terminal CTS region. PMID:23400704

Schoberer, Jennifer; Liebminger, Eva; Botchway, Stanley W.; Strasser, Richard; Hawes, Chris

2013-01-01

294

In planta Protein Interactions of Three Alphacryptoviruses and Three Betacryptoviruses from White Clover, Red Clover and Dill by Bimolecular Fluorescence Complementation Analysis  

PubMed Central

Plant-infecting viruses of the genera Alpha- and Betacryptovirus within the family Partitiviridae cause no visible effects on their hosts and are only transmitted by cell division and through gametes. The bipartite dsRNA genome is encoding a RNA-dependent RNA polymerase (RdRp) and a coat protein (CP). Aside from sequence and structural analysis, the investigation of protein interactions is another step towards virus characterization. Therefore, ORFs of two type members White Clover Cryptic Virus 1 and 2 (WCCV-1 and WCCV-2), as well as the related viruses from Red Clover and Dill were introduced into a bimolecular fluorescence complementation assay. We showed CP-CP dimerization for all tested viruses with localization for alphacryptoviruses at the nuclear membrane and for betacryptoviruses close to cell walls within the cytoplasm. For CPs of WCCV-1 and WCCV-2, deletion mutants were created to determine internal interaction sites. Moreover, RdRp self-interaction was found for all viruses, whereas CP-RdRp interactions were only detectable for the alphacryptoviruses. An intra-genus test of CPs was successful in various virus combinations, whereas an inter-genus interaction of WCCV-1CP and WCCV-2CP was absent. This is the first report of in vivo protein interactions of members in the family Partitiviridae, indicating distinct features of the alpha- and betacryptoviruses. PMID:24113719

Lesker, Till; Maiss, Edgar

2013-01-01

295

In Planta Recognition of a Double-Stranded RNA Synthesis Protein Complex by a Potexviral RNA Silencing Suppressor[C][W][OPEN  

PubMed Central

RNA silencing plays an important antiviral role in plants and invertebrates. To counteract antiviral RNA silencing, most plant viruses have evolved viral suppressors of RNA silencing (VSRs). TRIPLE GENE BLOCK PROTEIN1 (TGBp1) of potexviruses is a well-characterized VSR, but the detailed mechanism by which it suppresses RNA silencing remains unclear. We demonstrate that transgenic expression of TGBp1 of plantago asiatica mosaic virus (PlAMV) induced developmental abnormalities in Arabidopsis thaliana similar to those observed in mutants of SUPPRESSOR OF GENE SILENCING3 (SGS3) and RNA-DEPENDENT RNA POLYMERASE6 (RDR6) required for the trans-acting small interfering RNA synthesis pathway. PlAMV-TGBp1 inhibits SGS3/RDR6-dependent double-stranded RNA synthesis in the trans-acting small interfering RNA pathway. TGBp1 interacts with SGS3 and RDR6 and coaggregates with SGS3/RDR6 bodies, which are normally dispersed in the cytoplasm. In addition, TGBp1 forms homooligomers, whose formation coincides with TGBp1 aggregation with SGS3/RDR6 bodies. These results reveal the detailed molecular function of TGBp1 as a VSR and shed new light on the SGS3/RDR6-dependent double-stranded RNA synthesis pathway as another general target of VSRs. PMID:24879427

Okano, Yukari; Senshu, Hiroko; Hashimoto, Masayoshi; Neriya, Yutaro; Netsu, Osamu; Minato, Nami; Yoshida, Tetsuya; Maejima, Kensaku; Oshima, Kenro; Komatsu, Ken; Yamaji, Yasuyuki; Namba, Shigetou

2014-01-01

296

Um novo conceito de monitoramento e comunicação ambiental: a rede européia para a avaliação da qualidade do ar usando plantas bioindicadoras (EuroBionet)  

Microsoft Academic Search

A new concept of environmental monitoring and communication: European network for the assessment of air quality by the use of bioindicator plants (EuroBionet)). In spite of all progress made in reducing the emission of air pollutants, the air quality is still unsatisfactory in many European cities. Bioindicator plants are of increasing importance for air quality control as their use makes

ANDREAS KLUMPP; WOLFGANG ANSEL; GABRIELE KLUMPP; ANETTE FOMIN

2001-01-01

297

Why Range Forage Quality Changes (Spanish)  

E-print Network

/invierno Perenne 4-32 14-74 carga en el corto plazo en un pastizal previamente pastoreado de manera ligera o moderada, puede resultar en una menor calidad de forraje, debido a que los animales son forzados a consumir forra- je viejo o muerto. Si el potrero tiene... antecedentes de pastoreo o uso intenso, la calidad del forraje de los pastos ser? en general m?s alta, debido a que las plantas est?n menos maduras y hay menos material muerto. Estas diferencias en calidad de forraje no sig- nifican que el uso intensivo...

Lyons, Robert K.; Machen, Richard V.; Forbes, T. D. A.

2001-09-10

298

Se identifica una relación entre la falta de exámenes de detección y una gran parte de los casos de cáncer de seno en la etapa avanzada  

Cancer.gov

Los autores de un estudio publicado el 20 de octubre de 2004 en la revista Journal of the National Cancer Institute1? declaran que las dos prioridades principales del sistema de salud deben ser aumentar el porcentaje de exámenes de mamografía e invertir en investigaciones que mejoren la tecnología para detectar el cáncer de seno.

299

Los grupos económicos en México a partir de una tipología de arquitectura y gobierno corporativos. Una revisión de sus explicaciones teóricas  

Microsoft Academic Search

This paper develops a typology of corporate architecture and corporate governance in order to analyze the Mexican Business Groups. The typology helps under-stand: 1) the evolution of Mexican business networks towards a centralized coordination of the firms, and 2) how changes in some features of corporate governance have tended to preserve a state of few counterweights to the decisions of

Rubén Chavarín Rodríguez

2011-01-01

300

A partir de una breve descripcin del sector energtico nacional, junto con los elementos centrales de su desarrollo histrico, se presenta una  

E-print Network

eléctrica Rodrigo Palma (Coordinador), Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile. Juan C. Araneda, Transelec, Santiago, Chile. Walter Brokering, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile. Guillermo Jiménez, Facultad de Ciencias

Catholic University of Chile (Universidad Católica de Chile)

301

Al fin una herramienta que ahorra tiempo al investigador de la Universidad de Chile!  

E-print Network

Library AGRICOLA American Chemical Society Annual Reviews Blackwell-Synergy Business Source PremierQuest Psychology Journals Proquest Research Library ProQuest Science Journals Psychology & Behavioral Sciences

Matamala, Martín

302

La història cultural i l'intel·lectual professional. Una visió personal  

Microsoft Academic Search

The author exposes the main research lines in the history of local culture. He briefly considers the main lines in cultural contemporary history investigation. The author studies the introduction and development of cultural history based on the concept of intellectual professional in Catalan historiography at a moment when economical and social research were preferred by a large part of local

Jordi Casassas i Ymbert

1998-01-01

303

The Struggle for Mexico's First Gay-Straight Alliance: Como una Novela Real  

ERIC Educational Resources Information Center

In 2004, a group of high school students at a private American school in Mexico City started the first gay-straight alliance in Mexico. A small group of conservative parents and a Mormon principal organized in opposition. This paper details the students' struggle to keep their club and offers lessons learned about student activism, school change,…

Macgillivray, Ian K.

2006-01-01

304

H-COMP: una herramienta para la comparación de algoritmos de extracción de endmembers  

Microsoft Academic Search

Over the past years, several endmember extraction algorithms have been developed for spectral mixture analysis of hyperspectral data. Due to a lack of quantitative approaches to substantiate new algorithms, available methods have not been rigorously compared using a unified scheme. In this paper, we describe H-COMP, an IDL (Interactive Data Language)-based software toolkit for visualization and interactive analysis of results

Javier Plaza; Antonio Plaza; Pablo Martínez; Rosa Pérez; M. C. Cantero

2003-01-01

305

Nací mujer, la vida de Mame: una puesta en escena sobre la inclusión intergeneracional  

Microsoft Academic Search

I was born a woman, the life of Mame is the dramatization a fictitious intergenerational story. However, the story is based on true events and the feelings of real immigrant women. The dramatization narrates the life of a woman, from the time her parents–who had recently emigrated from Senegal–settled in Andalusia, up to the adolescence of Mame's own daughter. The

M. del Pilar Lasheras Amat; Rafael Muriel Fernández; M. Victoria Llamas Martínez; Asmaa Hallaga Messari; Albert Bitoden Yaka; Mame Awa Ndour; Ousseynou Dieng; Victoriano Márquez Bernal; Manuel Garrido Sevillano

2010-01-01

306

Sistemas de Información en Salud e indicadores de salud: una perspectiva integradora  

Microsoft Academic Search

Health Information Systems (HIS) are the core support to decision-making in health organizations. Within HIS, health indicators (HI) reflect, numerically, events measured in the health-illness continuum. The integrated health information system is intended to standardize, integrate and organize all the information available in health information systems through an accessible and secure repository, and to conveniently distribute information for decision-making.To standardize

Jaume Canela-Soler; David Elvira-Martínez; María Jesús Labordena-Barceló; Enrique Loyola-Elizondo

2010-01-01

307

Quinoxaline-Based Poly(aryleneethynylene)s Carlito G. Bangcuyo, Joe M. Ellsworth, Una Evans,  

E-print Network

The optical behavior of 3 in thin films can be effectively* Corresponding author. E-mail: Bunz polymers to be amorphous, with no distinct ordering present. In thin films, both polymers appear reddish the synthesis, ionochromic effect, and electrochemistry of the first quinoxaline-containing PAEs, 3 and 6

Myrick, Michael Lenn

308

Migración sin fronteras: una investigación sobre la libre circulación de personas  

Microsoft Academic Search

The 'migration without borders' (MWB) scenario is increasingly being discussed among academics and NGOs while receiving support from different groups, including neo-classical economists as well as social movements on the left. In a globalised world in which migratory flows increasingly seem to escape states' attempts to regulation, it fosters a critical rethinking of current migration policies and practices. In order

Antoine Pécoud; Paul de Guchteneire

2005-01-01

309

AFINALES DE 1974, despus de una desas-trosa combinacin de enfermedades como el  

E-print Network

alimento y refu- gio del hurón. En 1988, el descubrimiento de las colonias más extensas de perros llaneros(Cynomys ludovicianus) en Norteamérica en la región de Janos- Casas Grandes,nos llevó a proponer este sitio como un área

Nacional Autónoma de México, Universidad

310

Estimación de la población con seguro de salud en México mediante una encuesta nacional  

Microsoft Academic Search

Objective. To present estimates of health insurance cove- rage in Mexico and discuss the differences among some sources of information. Material and Methods. Based on a national survey performed in 2002, the percentage of in- surance coverage was estimated by state, rural condition, and expenditure level. Results. The percentage of the po- pulation without medical insurance is 59.9%. The main

Puentes-Rosas E; Sesma S

2005-01-01

311

Esercizio n. 1 Data la seguente funzione ad una uscita, non completamente specificata  

E-print Network

'd') C (ab'c') D (ac'd) E (abd) F (bc'd) G (a'bc') II) A+D+G III) · La soluzione costa 8 ed è unica forma minima. Soluzione: I) x 1 x 1 1 1 x x x 1 A B C D E F G ab cd Essenziali: A (b'd') Primi: B (a+B+C III) La soluzione costa 7 ed è unica, l'altra soluzione che implicherebbe D al posto di C costa di più

Silvano, Cristina

312

El espejo deformado: Una propuesta de análisis del reciclaje en la ficción audiovisual norteamericana  

Microsoft Academic Search

This paper is an approach to the different ways in which a narrative material can be reused in the cultural industries through the case study of the United States. Starting from the present situation of the investigations on literary

José Manuel de Pablos Coello

2006-01-01

313

El Teatro de la Basura: La búsqueda de una identidad cultural  

E-print Network

desconstruir la cosificación del ser, no destruirla. El teatro que resulta de este reciclaje se parece al "teatro de crisis" que Diana Taylor ha analizado en su libro reciente. Dice Taylor, "If culture is to be more than a luxury item for the wealthy...

Stone, Kent; Cohen, Deb

1995-10-01

314

DISEÑO Y VALIDACIÓN DE UNA SONDA TDR PARA LA MEDICIÓN DE LA HUMEDAD DEL SUELO  

Microsoft Academic Search

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

Martínez Fernández; A. Ceballos Barbancho

315

Análisis de los Métodos de Selección de Componentes COTS desde una Perspectiva Ágil  

Microsoft Academic Search

componentes COTS (Commercial Off-The-Shelf), debidamente personalizados e integrados. En este tipo de sistemas, el énfasis se desplaza de las actividades propias del desarrollo a medida, a los procesos de selección e integración de COTS. Existen diferentes propuestas basadas en la selección de COTS (pocas tratan de integración), y en este artículo estudiamos cómo se comportan desde un punto de vista

Fredy Navarrete; Pere Botella; Xavier Franch

2005-01-01

316

Enseñanza de la Ingeniería de Software desde una Perspectiva de Trabajo Colaborativo  

Microsoft Academic Search

This paper presents the results of a CSCL (Computer Supported Collaborative Learning) experience, which was performed to Software Engineering courses in three countries. Co mputer Science undergraduate students from three Latin American universities performed theoretical and practical jo int sessions on software estimations in order to determine the deve lopment effort of a particular software project. During the experi ence

Maria I. Lund; Laura Aballay; Sergio F. Ochoa; Andres Neyem; Faber Giraldo

317

Una Visita al Viejo San Juan (A Visit to Old San Juan).  

ERIC Educational Resources Information Center

Written in Spanish, this black and white illustrated booklet provides a tour of Old San Juan, Puerto Rico's oldest and most historic city. Brief historical information is provided on the Perro de San Jeronimo, a statue of a barking dog found in front of the Castillo; Plaza de Colon, a small plaza dedicated to Christopher Columbus; the Catedral de…

Cabello, Victor; And Others

318

La política española en Cuba: una década de cambios (1876-1886)  

Microsoft Academic Search

Restaurada la monarquía en España y afianzado el orden en el territorio metropolitano, el gobierno español puso término a la insurrección cubana mediante el convenio del Zanjón. Durante los años siguientes, objeto de creciente interés por parte de la historiografía sobre Cuba, se construyó en aquella Antilla un nuevo edificio institucional, se abolió la esclavitud y se reformó el sistema

Inés Roldán de Montaud

2003-01-01

319

La guerra del fin del mundo: historia e invencion en una novela historica  

E-print Network

ritual y jerarquia. El gobernador creia que el grupo conspiraba contra el, y mando tropas de la policia que acabaron con la ciudad en 1819. Muertos muchos de sus adeptos, el lider se escapo, y los prisio- neros fueron soltados despues de ser procesados... recaudacion de los impuestos, y un dia de fiesta mando a sus cre- yentes quemar las tables en un "auto-de-fe". Abandono despues la villa con unos doscientos adeptos. Dna tropa de la policfa los persigui6 y los encontro en Massete. Los policias atacaron...

Loeffler, Lisa Bowe

2012-06-07

320

La Casa Verde de Mario Vargas Llosa: una imagen del hombre  

E-print Network

contribuyen a cata imagen, constituye uno de los principales componentes del analisis, ya que Vargas Llosa utilize estos metodos indirectos para involucrar al lector en la creacion asm corno en la percepcion de las imagenes que la novels sugiere, y que... la complejidad que la vida humana tiene para todo aquel que la contemple sin reducirla Su imapen del hombre es considerada corno esencialmente pesimista, ya que ninpuno de los personajes es capaz de tener control de su vida y determinar su...

Frick, Magdalena Capurro

2012-06-07

321

DISPOSITIVOS INTRAUTERINOS CON LEVONORGESTREL: UNA NUEVA ALTERNATIVA TERAPÉUTICA EN EL SANGRADO UTERINO ANORMAL DE ORIGEN ORGÁNICO  

Microsoft Academic Search

RESUMEN El uso de dispositivos intrauterinos con levonorgestrel (DIU-LNG) además de su efecto anticoncepti- vo, disminuye significativamente el sangrado uterino. Esto hace que los DIU-LNG expresen beneficios tales como el control del sangrado uterino, especialmente en metrorragias o menometrorragias por enfermedades orgánicas como miomatosis uterina. Sin embargo, en nuestro medio existen dudas sobre los beneficios reales de estos métodos y

2004-01-01

322

La Cappella della Sapienza una comunit cristiana presente ed operante nella realt  

E-print Network

più spino- si del Cristianesimo: Era proprio necessaria la morte di Cristo in croce per la nostra salvezza? La morte di un innocente? Perché il più terribile dei supplizi, riserva- to ai delitti più gravi

Roma "La Sapienza", Università di

323

Descripció d?una nova espècie de Pholioxenus Reichardt, 1932 (Coleoptera, Histeridae) de la península Ibèrica  

Microsoft Academic Search

Es descriu Pholioxenus castilloi n. sp. d'Esplús (Osca, Espanya). Es distingeix bàsicament de Ph. schatzmayri (Müller, 1910) per tenir el cos més ample, amb puntejat i microscultura més densos, estria subhumeral externa completa i estries dorsals més llargues, entre d'altres caràcters. Aquest és el primer representant del gènere de la Península Ibèrica.

Tomàs Yélamos

2002-01-01

324

PROYECTO FITNET (European Fitness for Service Network) : Hacia una norma europea de Integridad estructural  

Microsoft Academic Search

There are many structural assessment procedures which are used in Europe (R6, R5, API579, BS7910, A16, SINTAP...). Some of them are limited to specific areas (SINTAP only covers fracture, R5 studies the high temperature response of structures, A16 covers fatigue...) and the others are more general. In any case, there is no any unified european procedure to treat the different

S. Cicero; J. A. Álvarez; F. Gutiérrez-Solana

325

Patrones dietarios en adolescentes mexicanas. Una comparación de dos métodos. Encuesta Nacional de Nutrición, 1999  

Microsoft Academic Search

Objective. To identify dietary patterns in Mexican female adolescents by two statistic methods. Material and Meth - ods. Cross-sectional study of 477 women 12 to 19 years of age -National Nutrition Survey, 1999. Dietary patterns were obtained by factor and cluster analyses. Results. Three dietary patterns were identified by cluster analysis: \\

Ana Lilia Lozada; Mario Flores; Sonia Rodríguez; Simón Barquera

2007-01-01

326

Modelos masculinos y violencia en Sanctuary y Crónica de una muerte anunciada  

Microsoft Academic Search

This essay analyzes how two novels, William Faulkner’s Sanctuary and Gabriel Garcia Marquez’s Chronicle of a Death Foretold, present masculine models that juxtapose power and violence during times of social crisis. Both novels present violent masculinities that overcome peaceful masculinities, in conflicts that result in murders and rapes; but rather than acuse the individuals responsible for the violent acts, the

Cesar Valverde

2011-01-01

327

Política, Reformas Educativas y Discursos Opositores en la Argentina: una mirada histórica  

Microsoft Academic Search

During the 1990's, Argentina reformulated the role of the State as a body responsible for the implementation of education policies, and carried out a reform that modified the structure of the educational system, among other issues. This reform was introduced as the only possible one, although it gave rise to opposition and alternative proposals from different circles. A historical analysis

MARÍA DEL CARMEN

328

Evaluación económica de políticas educativas: Una ilustración con la Ley General de la Educación de 1970  

Microsoft Academic Search

En este trabajo se trata de evaluar el impacto económico de las políticas educativas tomando como ilustración los cambios inducidos por la promulgación y posterior implementación de la Ley General de Educación de 1970. Basándose en la interpretación de la estimación de Variables Instrumentales sugerida en Imbens y Angrist (1994) se estima el impacto económico de la reforma sobre aquellos

María Arrazola; José de Hevia

2003-01-01

329

Impacto del crecimiento industrial en la salud de los habitantes de una ciudad minera del Perú  

Microsoft Academic Search

Objective: To determine incipient industrialisation health impact on the population of a mining Peruvian mountain city. Material and Methods: Retrospective descriptive study that reviewed Regional City Medical Hospital patient's records seen from 1996 through 2001, searching for environmental related illnesses. We used growth indexes and compared them statistically with environmental indexes by logistic regression using the SPSS\\/6,1. Results: We found

AUGUSTO RAMÍREZ; TERESITA LEÓN

2004-01-01

330

Vivencias de los(as) adolescentes en diálisis: una vida con múltiples pérdidas pero con esperanza  

Microsoft Academic Search

SUMMARY Introduction: Terminal renal failure affects all aspects of the person's life. The impact of this illness during the adolescence is quite dramatic since the adolescent must overcome the demands from the developmental stage and the illness situation. Knowledge about the illness impact on the adolescentslife is scarce; as a contribution to increasing this knowledge, a study was done to

LILIANA C RISTINA; EDELMIRA C ASTILLO

2007-01-01

331

LAS CRCELES PERUANAS Y SU FICCIONALIZACIN: UNA IMAGEN DEL PER CONTEMPORNEO  

E-print Network

guerras externas y civiles ocurridas en sus 182 años de vida independiente e [...] el 75 por ciento de las", se lee en el Informe de la CVR3 (9). La CVR atribuye la responsabilidad del 54% de las víctimas publicación del informe como los escritos posteriores han dado lugar a polémicas sobre la responsabilidad de

Paris-Sud XI, Université de

332

ECOLOGISMO, IGUALDAD Y RESPONSABILIDAD CIVIL Una Visión de la Pu blicidad Social Tele visiva  

Microsoft Academic Search

Social Advertising and Commitment Marketing are in fashion. This paper is made from the analysis of a group of campaigns labelled as Socials, it is proposed a vital conceptual debate, and so we argue that this kind of advertising we study, must be understood in a different way, in order to not confound the advertising that uses social argument from

Alfonso Cortés González

333

ELS CONTRACTES EN EL SECTOR TURSTIC: UNA VISI PRCTICA Cicle de conferncies (segona edici)  

E-print Network

Dret Civil de la Universitat de les Illes Balears Dates i horari: els dimecres, del 28 de març al 16 de responsabilidad corporativa. Sr. Alvaro Middelmann, Director general Airberlin. - Dimecres, 4 d'abril, 12.30 hores

Oro, Daniel

334

FAMILIAS DESMEMBRADAS Y ORFANDADES: REPRESENTACIONES DE UNA ACTITUD POSMODERNA HACIA LA NACIÓN MEXICANA  

E-print Network

The image of the traditional patriarchal family as the perfect allegory for the nation has been widely used in Latin American literature since the 19th century. Within the frame of postmodernism, this study challenges and ...

Tolentino, Adriana

2009-12-10

335

La gestión del ruido ambiental provocado por infraestructuras de transporte: una aplicación para Euskadi  

Microsoft Academic Search

Although the damaging effects of noise on human health had been recognized since the seventies, the European Environmental Policy had been focused in specific transport emissions, such as the gases of the greenhouse effect or the suspension particles. It was the approval of the law by the European Board regarding ambient noise that marked the start of a new stage

David Hoyos Ramos

2010-01-01

336

Efectos sociales de la contaminación acústica. Una aplicación de valoración al transporte ferroviario  

Microsoft Academic Search

The article describes an application of contingent valuation to estimate welfare losses caused by noise pollution in the railway line connecting Galicia and Portugal. In addition, temporary specification related to the payment vehicle in the valuation and the internationally used rating scales of annoyance were applied to the analysis of the data. Results show a positive willingness to pay of

Roi Durán; María Xosé Vázquez Rodríguez

2009-01-01

337

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

ERIC Educational Resources Information Center

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

Estepa, A.; And Others

1992-01-01

338

El Grupo Actoral 80: Una alternativa para la integración latinoamericana en el teatro  

E-print Network

Adjunto y uno de sus ideólogos principales) y reconocido oficialmente como grupo de teatro de la institución. EL GA '80: EL ACTOR Y LA INTEGRACIÓN LATINOAMERICANA Pero el hecho de que actores de distintas nacionalidades latino americanas (boliviana... sesiones de reflexión teórica (conducidas por Gene), decidió convertir la integración latino americana en uno de los ejes orientadores para su actividad, en su alternativa frente al Teatro, en su ideología. Notó también que la reunión de distintas...

Herná ndez, Alex

1988-04-01

339

UNA APROXIMACIÓN AL PERFIL FORMATIVO DEL DOCENTE PARA ATENDER A LA DIVERSIDAD DEL ALUMNADO  

Microsoft Academic Search

Undoubtedly, the educational treatment of student diversity demands a change in the teachers role. This affects training processes, both at initial and in-service levels, which should tend to look for alternatives based on the premise that diversity is a core value in education. In this sense, our work reviews some fundamental assumptions, with the intention of creating a space for

ANTONIO SÁNCHEZ PALOMINO; JOSÉ J. CARRIÓN MARTÍNEZ

2001-01-01

340

The digital language teacher Associate Professor Una Cunningham grew up in Northern  

E-print Network

for interaction in the TL. Language education is an excellent arena for the implementation of flipped classroom the affordances of the tools and what is actually happening in the language classroom. Nonetheless, current thinking, where students access digital materials outside of class and use classroom time for interaction

Hickman, Mark

341

Movimiento de un líquido ideal pesado en una vasija elástica no acotada  

Microsoft Academic Search

In this paper one considers the problem about small oscillations of an ideal heavy liquid contained in an unbounded elastic container produced by initial perturbations of the bottom and of the own free surface. Our aim is to use the known results about differential equations on Banach spaces for the study of the solubillity in general sense of the system

ANDRÉS FRAGÜELA

342

¿La conservación de semen a -150°C es una alternativa viable en caprinos?  

Microsoft Academic Search

A series of experiments was carried out to validate a -150 °C ultra-low temperature freezer for its possible use to properly freeze and store semen. In the first part, rude sample handling was simulated to see whether temperature of stored samples was maintained within a safe range; also, the freezing point and latent heat of fusion plateau of a semen

A. Medrano; F Cabrera; F González; M Batista; E Quesada; P Calero; A Gracia

343

¿TURISMO VERSUS DESARROLLO? UNA PERSPECTIVA CRITICA DE LAS INTERACCIONES ENTRE TURISMO Y DESARROLLO  

Microsoft Academic Search

Un lugar comun frecuente en la teoria turistica es la consideracion de la actividad turistica como un gran agente transformador de la realidad territorial donde se llevan a cabo tales actividades, dados los impactos, positivos y negativos que el turismo produce en los campos economico, social y medioambiental (Butler, 1974 y 1975; Pearce, 1988; Picornell, 1995; Murphy, 1983; Mathieson y

Francisco J. Calderon Vazquez

2010-01-01

344

Sulla regolarizzazione mediante la «Generalized cross validation»: Una appliczione al caso dei polinomi ortogonali  

Microsoft Academic Search

Sunto  Il lavoro si compone di due parti. Nella prima, dopo aver richiamato la generalized cross validation, vengono brevemente illustrate\\u000a alcune fondamentali proprietà di approssimazione e le più significative tecniche di costruzione della relativa smoothing spline.\\u000a \\u000a Nella seconda parte viene descritto un metodo computazionalmente efficiente per la utilizzazione della generalized cross validation\\u000a nella regolarizzazione mediante polinomi ortogonali.

Marco Frontini; Sebastiano Seatzu

1985-01-01

345

La competitividad internacional manufacturera en Argentina, México y Turquía: una investigación empírica  

Microsoft Academic Search

Resumen Este trabajo investiga los efectos generados por la productividad laboral, los salarios y el tipo de cambio real, entre otras variables, sobre la Competitividad Internacional (CI) manufacturera de Argentina, México y Turquía, durante el período 1998-2008. Para tal fin, se construye un índice de CI para la industria manufacturera de cada nación, el cual se basa en el concepto

Víctor M. Cuevas Ahumada

2009-01-01

346

Una aplicación de la teoría de elección social al mecanismo de solución de controversias del TLC  

Microsoft Academic Search

La teoría de elección social (TES) analiza procedimientos y normas de decisión colectiva en función de las preferencias individuales. En su forma contemporánea más general, a partir de Arrow (1951) este proyecto ha sido definido axiomáticamente con gran precisión y economía analítica, y en su dominio de aplicaciones potenciales incluye desde sistemas de votación para elecciones y comités hasta normas

John Scott

1992-01-01

347

LA CULTURA COMO INVERSIÓN TURÍSTICA. UNA REFLEXIÓN A PROPÓSITO DEL GUGGENHEIM BILBAO  

Microsoft Academic Search

El turismo, objeto de diversas disciplinas, es uno de los sectores más relevantes de la economía mundial, siendo en España la primera industria nacional. En los último años el turismo cultural se ha revelado como un motor esencial de desarrollo para bastantes territorios. Un caso sobresaliente es el conocido como «efecto Guggenheim» que desde su creación en 1997 se ha

Ainhoa Aguirregoitia Martínez

2011-01-01

348

VARIABLES SIGNIFICATIVAS EN LAS RELACIONES VIOLENTAS EN PAREJAS JÓVENES: UNA REVISIÓN  

Microsoft Academic Search

Resumen La violencia en las parejas jóvenes es un precursor de la violencia en las pare- jas adultas. En las parejas jóvenes la violencia suele ser psicológica, plantearse de forma sutil y ser menos grave que en las parejas en la vida adulta. Por lo que se refiere a los agresores, la violencia es más frecuente cuando hay ciertas variables

Itxaso González-Ortega; Enrique Echeburúa; Paz de Corral

2008-01-01

349

Sor Juana as Feminist Playwright: The Gracioso's Satiric Function in Los empeños de una casa  

E-print Network

hereafter in Arenal's dual sense of perspective and activism). The two primary female characters, Doña Leonor de Castro and Doña Ana de Arellano, both prove themselves to be strong-willed women who assert their own autonomy rather than passively submit... as Doña Leonor. This Golden Age version of a present-day "drag performance" creates within the play what Elaine Showalter calls a "double- voiced discourse." As Showalter argues, women's self-expression cannot exist independently of male...

Weimer, Christopher Brian

1992-10-01

350

VARIABLES ASOCIADAS A HIPERTENSION ARTERIAL EN UNA REGION DE LA ARGENTINA  

Microsoft Academic Search

Regional variables associated with high blood pressure in Argentina. We conducted a study in a random sample of 1523 inhabitants (15-75 years old) of Rauch city to determine risk factors prevalence to development hypertension and cardiovascular diseases. We measured blood pressure, weight, height, waist circumference, cholesterol and glucose levels, sodium excretion, and alcohol and tobacco consumption. We found a high

HORACIO A. CARBAJAL; MARTIN R. SALAZAR; BEATRIZ RIONDET; HORACIO F. RODRIGO; SUSANA M. QUAINI; VALENTIN RECHIFORT; MARCELO AIZPURUA; RAUL F. ECHEVERRIA

2001-01-01

351

Hipertensión arterial, medicación antihipertensiva y disfunción eréctil: una perspectiva basada en la evidencia  

Microsoft Academic Search

BackgroundErectile dysfunction (ED) is frequent in hypertensive men. Antihypertensive drugs, especially diuretics and ?-blockers, have often been reported to be ED inducers, which can lead to non-compliance with medication.

M. Mas

2005-01-01

352

[Clip Sheets from BOCES. Opportunities. Health. Careers. = Oportunidades. Salud. Una Camera En...  

ERIC Educational Resources Information Center

This collection of 83 clip sheets, or classroom handouts, was created to help U.S. migrants learn more about health, careers, and general "opportunities" including education programs. They are written in both English and Spanish and are presented in an easily understandable format. Health clip-sheet topics include the following: Abuse; AIDS;…

State Univ. of New York, Geneseo. Coll. at Geneseo. Migrant Center.

353

Hacia una mejor educación rural: impacto de un programa de intervención a las escuelas en Colombia  

Microsoft Academic Search

Utilizando información censal de las sedes educativas rurales de Colombia el presente trabajo evalúa el impacto que tuvo el Programa de Educación Rural – PER - en las tasas de eficiencia (cobertura, reprobación, aprobación y deserción) y calidad de la educación en las sedes en donde se aplicó. A través de la implementación de modelos educativos flexibles adaptados a las

Catherine Rodríguez; Fabio J. Sánchez T; Armando Armenta

2007-01-01

354

LA COSCIENZA ALLE PRESE COL SÉ. VERSO UNA NEUROFENOMENOLOGIA DELLA COSCIENZA  

Microsoft Academic Search

L'invenzione della coscienza La questione della coscienza, trascurata dall'indagine scientifica per gran parte del XX secolo, è tornata prepotentemente alla ribalta grazie anche all'enorme sviluppo delle tecniche di indagine non invasive delle funzioni cerebrali. In realtà, il concetto di coscienza non esiste da sempre, né del resto vi è accordo su chi abbia lo abbia avanzato per primo. È apparso

MAURO MALDONATO; E VERONICA SILEO

355

Diseo y caracterizacin hidrulica de una barrera reactiva permeable para la  

E-print Network

Dispersed Illite Substrate #12;Dise�o de la barrera-Par�metros de dise�o � Ubicaci�n � Forma-tama�o-grosor � Material de relleno � Permeable � Reactivo DIS Dispersed Illite Substrate #12;Dise�o de la barrera Dispersed Illite Substrate #12;Dise�o de la barrera-Par�metros de dise�o � Ubicaci�n � Forma

Politècnica de Catalunya, Universitat

356

Hacia una adaptación cultural para el tratamiento de trastornos alimentarios en latinos en Estados Unidos  

PubMed Central

Eating disorders affect all ethnic and socioeconomic groups. However, evidence based treatments for eating disorders have been developed and tested exclusively on Caucasian populations. With the purpose to develop a culturally sensitive framework for the eating disorders treatment in Latinos/as, the objectives of this work were: 1) identify and describe some of the relevant cultural elements for eating disorders in the Latino population and, 2) to draft a culturally sensitive intervention model for eating disorders in Latino population in the United States. Providing culturally sensitive treatments for Latinos with psychiatric disorders is essential to reverse public health disparities. PMID:22003472

Reyes-Rodríguez, Mae Lynn; Bulik, Cynthia M.

2011-01-01

357

Efectos de desbordamiento interregional en España: Una estimación a través del modelo input-output interregional  

Microsoft Academic Search

In this note we introduce the 1995 Spanish Interregional Input-Out- put Model, which was estimated using a wide set of One-region input-output tables and interregional trade matrices, estimated for each sector using interregional trans- port flows. Based on this framework, and by means of the Hypothetical Regional Extraction Method, the interregional backward and feedback effects are computed, capturing the pull

Sección NOTAS; Carlos Llano

358

Anatomía foliar y caulinar de Stemodia hassleriana (Scrophulariaceae), una especie endémica del Paraguay  

Microsoft Academic Search

Summary: Foliar and caulinar anatomy of Stemodia hassleriana (Scrophulariaceae), a species endemic to Paraguay. Foliar and caulinar anatomy of Stemodia hassleriana Chodat, a species endemic to Paraguay is studied. This species is distinguished from the remaining species of Stemodia from Paraguay since it presents the stems with collenchyma and six notorious ribs. Stem and leaves anatomical structures are described and

MARÍA DE LAS MERCEDES SOSA

359

LOS SUEÑOS: SU ESTUDIO CIENTIFICO DESDE UNA PERSPECTIVA INTERDISCIPLlNARIA 1  

Microsoft Academic Search

In the last few decades several scientific disciplines have studied dreams: anthropology, neurosciences, and psychology (in particular the subdisciplines of cronobiologyand sleep science). This paper presents research lines on the topic of dream study, froma scientific interdisciplinary perspective. It ineludes cross-cultural studies, the relatíonship between sleepand drearning, ontogenesís, formal analysis ofthe kinds of dreams (proposed recentlyas an altemative to the

MARIA CLAUDIA MUNÉVAR; ANDRÉSMANUEL PÉREZ; Y EUGENIA GUZMÁN

360

Qu es una Racin Total Mezclada (TMR)? Abby Huibregtse, Agente Agrcola, Condado de Oconto  

E-print Network

Abby Huibregtse, Agente Agrícola, Condado de Oconto La mayoría de los animales se encuentran más dueños de animales necesitan tomar medidas adicionales para mantenerlos cómodos y productivos. Las fincas exposición de los animales al calor proporcionando sombra, especialmente al medio día y por la tarde. La

Sheridan, Jennifer

361

50 INVESTIGACION Y CIENCIA, septiembre, 2008 a diversidad de una selva tropical ha  

E-print Network

animales de los que depende la polinización de sus flores y la dispersión de sus semillas. Los tucanes toco cosas, si desaparecieran estos animales, todas esas especies de árboles dejarían de repro- ducirse, se flores po- linizadas por animales se han diversificado mucho más que sus primas hermanas cuyas flores

Jordano, Pedro

362

Habitos Alimentarios e Higiene Dental en una Poblacion Preescolar de Madrid.  

ERIC Educational Resources Information Center

Nutriment habits and oral hygiene in a preschool population in Madrid were studied by stratification in public or private schools. Significant differences were found only with regard to consumption of fish. Vegetable and fruit consumption was low in both groups, but not statistically significant. (SH)

Lafarga, R. Tarazona; And Others

1991-01-01

363

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

Microsoft Academic Search

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

Vicente Royuela; Diona Lambiri; Bianca Biagi

2006-01-01

364

MANUSCRITO 975 DE LA BIBLIOTECA DE MANUEL DE FALLA: UNA NUEVA FUENTE POLIFÓNICA DEL SIGLO XVI  

Microsoft Academic Search

En el Archivo Manuel de Falla se ha localizado un manuscrito de 1575 aproximadamente. Esta antología de más de un centenar de obras sacras y profanas, es fiel reflejo de las tendencias y gustos musicales de la época ya que contiene obras de siete importantes compositores españoles y trece extranjeros, la mayoría de los cuales mantenía estrechos lazos con la

Michael Christoforidis; Juan Ruiz Jiménez

1994-01-01

365

In una difficile situazione economica del settore automobilistico come possono gli OEM avere successo?  

Microsoft Academic Search

The future automotive business environment will be tough. Mega-OEMs will be under pressure to justify consolidation. The industry overcapacity will not be solved in the near term and will not be offset by emerging market growth. Higher sales and marketing costs will continue in the near future and product complexity will likely increase. In this tough environment, OEMs face many

Berger Roland

2003-01-01

366

Tea for Two: Performing History and Desire in Sabina Berman's Entre Villa y una mujer desnuda  

E-print Network

amusing, analysis of gender identity. Rather than simply denouncing (or, inversely, perpetuating) traditional gender roles (male or female), Berman shows them to be citational performances as she provides a "historical" account of gender identity... playwright provides an insightful analysis of the power of discursive practices and dramatizes how narrative (in the form of history, popular culture, or even the stories told us by others) author(ize)s the gender roles we cite and perform. Throughout...

Magnarelli, Sharon

1996-10-01

367

Pronóstico tras una agudización grave de la EPOC tratada con ventilación mecánica no invasiva  

Microsoft Academic Search

IntroductionPatients with chronic obstructive pulmonary disease (COPD) who survived an acute exacerbation with acute respiratory failure that required non-invasive mechanical ventilation (NIMV) are a group with a poor medium-term prognosis.

Jose Echave-Sustaeta; Lorena Comeche Casanova; Ricardo García Luján; Javier Sayas Catalan; Agustin Gómez de la Cámara; Angel López Encuentra

2010-01-01

368

La fbrica de la inseguridad en Caracas Una leyenda urbana entre necesidad de gestin y  

E-print Network

metrópoles latino-americanas ****** Julien Rebotier jrebotier@hotmail.com CREDAL ­ IHEAL VESPA ­ INRS, cidade e política: perspectivas comparativas quatro metrópoles latino-americanas, São Paulo : Brazil la UCV (Roberto Briceño León) *Centro por la Paz y los DDHH de la UCV (Ana María San Juan) *ONG Paz

Paris-Sud XI, Université de

369

Exposición ocupacional a solventes orgánicos en una fábrica de calzado en Valencia, Venezuela, 2001  

Microsoft Academic Search

SUMMARY Potential health effects of organic solvents exposure were assessed. Thirty six workers of shoe manufacturer located in Valencia, Venezuela, were studied. They had a medical exam, and an occupational history. Biological indicators of exposure (toluene in blood; methylethy- ketone, methylisobuthylketone, acetone and hippuric acid in urine) and effect (creatinine in urine, hematologic analyses, bilirubin, transaminases and alkaline phoshatase-AP) were

Maritza Rodríguez; Guido Squillante; Maritza Rojas; TRABAJOS ORIGINALES

370

Dieta della Civetta Athene noctua in habitat naturali e antropizzati: una revisione bibliografica  

Microsoft Academic Search

SUMMARY - Diet of the Little owl Athene noctua in rural and urban areas: a bibliographical review - Little owl Athene noctua is a specie that shows a great plasticity in the selection of its preys. It feeds itself of vertebrate, like mammals, birds and reptiles, but the great part of its diet is based on invertebrates. This study examines

Giuseppe ARCIDIACONO; Claudia DONATI; Marco MASTRORILLI

371

Comunicación entre gobierno y transnacionales una comparación de México y Corea  

Microsoft Academic Search

Introducción. La interacción entre las corporaciones transnacionales(CT) y un gobierno anfitrión tiende a entrar en conflicto a causa de las diferencias en las motivaciones y los intereses de los participantes, y el poder relativo de las dos partes. A lo largo del tiempo los intereses nacionales y los corporativos percividos evolucionan y cambian, como ocurre también con la balanza del

Juan M. Rivera; Kenneth P. Jameson; Lee A. Tavis

1991-01-01

372

Manifestación de la estructura de dominios en el comportamiento dieléctrico no lineal de una cerámica piezoeléctrica  

Microsoft Academic Search

It has been intended to improve the description of the nonlinear dielectric behavior of piezoelectric ceramic PZT, by applying diverse external actions, in order to correlate it to the phenomena that occur due to its structure. By using a bridge built for this purpose, the current obtained by applying a harmonic high voltage of low frequency is analyzed. It is

J. E. GARCÍA; R. PÉREZ; A. ALBAREDA

373

Historia Verdadera de Una Gota de Miel. (The True Story of a Drop of Honey).  

ERIC Educational Resources Information Center

Part of the series "Coleccion Mini-Libros" (Mini-Book Collection), the booklet is a factual account of the life of a bee. Designed to provide a tool for education of the Spanish-speaking child, as well as to stimulate an interest in Spanish among the youth of our country, the publication is a compilation of photographs with a description of bees…

Galarza, Ernesto

374

FACTORES DE LIDERAZGO Y COMPETITIVIDAD EN UNA EMPRESA DE SERVICIOS FINANCIEROS  

Microsoft Academic Search

This paper describes an applied research experience on the leadership process at a financial services company. For to the purposes of this study, leadership was viewed as a strategy for business competitiveness. The objectives were to evaluate the dominant leadership practices in the organization, involving leaders and their subordinate, and to identify through a factorial analysis the underlying dimensions of

JUAN EDUARDO CORTES

1999-01-01

375

La Responsabilidad Social Empresarial en Uruguay. Una visión comparada desde la ciudadanía y desde las empresas  

Microsoft Academic Search

The aim of this paper is to present, in a comparative view, the results of the Survey: Corporate Social Responsibility (CSR) which was carried out by the Department of Economics (FCS-UDELAR) in 2006 to respondents older than 17 years and to private companies in the industry, commerce and services during the second quarter of 2007. The main purposes of both

Zuleika Ferre; Natalia Melgar; Héctor Pastori; Giorgina Piani; Máximo Rossi

2007-01-01

376

Una discusión sobre la curva de Phillips de Friedman y la tasa natural de desempleo  

Microsoft Academic Search

In this paper I evaluate the theoretical consistency of Friedman.s Phillips curve. For this, I review his own exposition in the subject, making emphasis in his contributions to the short-run analysis of unemployment, wages and prices in front of the classical theory and Keynes.s .General Theory.. I examine his hypothesis founded in the natural rate of unemployment, looking at the

Leonardo Raffo López

2007-01-01

377

TESTIGOS DE JEHOVÁ Y TRANSFUSIÓN SANGUÍNEA: REFLEXIÓN DESDE UNA ÉTICA NATURAL  

Microsoft Academic Search

RESUMEN El rechazo por parte de los Testigos de Jehová de recibir transfusiones sanguíneas siempre ha representado para los médicos un conflicto ético y un problema en la relación médico paciente. Las razones de este grupo para rechazar las transfusiones se basan en motivos religiosos por un mandato explícito de Dios que se encontraría en la Biblia. Para ellos el

2006-01-01

378

Set in Haiti: The Construction of Race in Historia de una bala de plata  

E-print Network

and demonstrate some possible limitations in the use of Brechtian techniques to provoke a radical response to racism. Racial issues are also apparent in the plays that form the intertextual backdrop for this one, although they are conceived in very different... putting on a white "mask" and "blackface," with its traditional racist associations?3 Were they uncomfortable with overt attention to racism, was it their particular situation (predominately white North American readers—two Central Americans)? Using...

Kuhnheim, Jill S.

1996-04-01

379

Economía subterránea en Colombia 1976-2003: una medición a partir de la demanda de efectivo  

Microsoft Academic Search

La economía subterránea (ES), definida de manerasuscinta como aquella asociada con actividades por fue-ra de las instituciones legales de un país, es de particularrelevancia en Colombia debido al alcance que tiene laeconomía del narcotráfico y la economía informal evasorade la legislación fiscal y laboral; esto es particularmenteimportante no sólo para el banco central, pues la ES tieneuna ingerencia directa en

Carlos A. Arango; Martha Misas; Enrique López

2006-01-01

380

Sistemas Eolicos Pequenos para Generacion de Electricidad; Una guia para consumidores en los EE.UU.  

SciTech Connect

This Spanish version of the popular Small Wind Electric Systems: A U.S. Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

Not Available

2007-09-01

381

Sistemas Eólicos Pequeños para Generación de Electricidad: Una guia para consumidores en Nuevo México  

SciTech Connect

This Spanish version of the popular Small Wind Electric Systems: A New Mexico Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

Not Available

2005-10-01

382

Humedales y Peces: Una Conexin Vital 2 Qu es un Humedal? 3  

E-print Network

Humedales Más Comunes 7 Humedales de agua salada 7 Humedales de agua dulce 8 La Pérdida de Humedales y sus Alimento 12 Humedales y Calidad de Agua 12 Humedales del Caribe Estadounidense y Peces Asociados 13 Humedales de Agua Salada 13 Praderas de yerbas marinas 13 Peces e invertebrados comunes que utilizan las

383

Sistemas Eolicos Pequenos para Generacion de Electricidad: Una guia para consumidores en Nuevo Mexico  

SciTech Connect

This Spanish version of the popular Small Wind Electric Systems: A New Mexico Consumer's Guide provides consumers with information to help them determine whether a small wind electric system can provide all or a portion of the energy they need for their home or business based on their wind resource, energy needs, and economics. Topics include how to make a home more energy efficient, how to choose the correct turbine size, the parts of a wind electric system, how to determine whether enough wind resource exists, how to choose the best site for a turbine, how to connect a system to the utility grid, and whether it's possible to become independent of the utility grid using wind energy. In addition, the cover of the guide contains a list of contacts for more information.

Not Available

2007-09-01

384

LA NARRATIVA DE HCTOR TIZN: UNA LENGUA DE FRONTERA Leonor FLEMING  

E-print Network

predicamento por la calidad curativa de sus aguas y el atractivo de su vida social con un casino que que le había recomendado las aguas para un problema motriz en las piernas, ignorando posiblemente que

Boyer, Edmond

385

Una Struttura Comparabile Con I Lomasomi Nelle Cellule Austoriali di Cuscuta Pentagona Engelm  

Microsoft Academic Search

A structure comparable with the lomasomes in baustorial cells of « Cuscuta pentagona » Engelm. — Electron microscopic observations of haustorial cells in « Cuscuta pentagona » revealed to the A. the presence of some vesicular structures, outside the plasma membrane, comparable to the lomasomes of Moore and McAlear. The vesicles usually group in a bag of the plasma membrane

Giacomo Tripodi

1967-01-01

386

Una propuesta contable para las cooperativas de segundo grado: breve referencia fiscal  

Microsoft Academic Search

The work aims at analysing the Second Grade Cooperative Societies from an accounting and fiscal perspective. Consequently, their accounting obligations are stated first, followed by the implications arising from the recent publication of the Cooperative Societies Accounting Standards. Secondly, an accounting model which cooperatives could use in their transactions with their members (grass roots cooperatives are put forward). Lastly, a

Tomás Garrido Pulido; Raquel Puentes Poyatos

2005-01-01

387

ENEMIGOS NATURALES DE PLAGA DE CHAPULÍN (ORTHOPTERA: ACRIDIDAE) CON ÉNFASIS EN GUANAJUATO, MÉXICO: UNA BREVE REVISIÓN  

Microsoft Academic Search

A brief review of the literature was conducted to synthesize available information concerning predators, parasitoids, and parasites of grasshoppers (Orthoptera: Acrididae), with a geographical emphasis on Guanajuato, Mexico. Cleridae and Tenebrionidae (both Coleoptera) are present in pastures as predators of eggs, but their impact on grasshopper populations was not assessed. Blaesoxipha caridei (Brethes) (Sarcophagidae) has low parasitism (< 1%) on

M. D. SALAS-ARAIZA; E. SALAZAR-SOLIS

388

Adherencia al tratamiento en adolescentes diabéticos tipo 1 chilenos: una aproximación psicológica  

Microsoft Academic Search

Background: Treatment compliance among patients with type 1 diabetes mellitus, is low in 50% of diabetic teenagers, becoming a social and medical problem. Aim: To determine psycho-social factors associated to treatment compliance among Chilean diabetic type 1 teenagers. Patients and methods: A non experimental study of 61 diabetic teenagers (age 14.9±1.9 years, 37 male). The number of blood glucose determinations,

Manuel Ortiz P; Eugenia Ortiz P

2005-01-01

389

A Guide to Delegate Preparation: UNA-USA Model UN Survival Kit. 1988-89 Edition.  

ERIC Educational Resources Information Center

Written by students for students, the purpose of the book, one of four components of the Model UN Survival kit, is to help prepare secondary and college student delegates for participation in Model United Nations (UN) Conferences. Model UN programs help students discover the difficulties of world political processes and understand other nations…

Muldoon, James P., Jr., Ed.; Diehl, John, Ed.

390

Experiencias y repercusi?n de una formaci?n en ?tica de investigaci?n  

PubMed Central

El presente artículo tiene como propósito describir los logros y repercusiones de la capacitación en ética de la investigación que brinda el Centro Interdisciplinario de Estudios en Bioética de la Universidad de Chile, sirviendo de estímulo, motivación y orientación a profesionales que requieren conocer y aplicar las normas y el raciocinio conducente a la deliberación de los problemas en esta disciplina. Asimismo, describe cómo este conocimiento genera un efecto multiplicador en aspectos tales como la participación en un comité de ética de la investigación (CEI), organización de cursos y creación y desarrollo de líneas de investigación, que repercuten en publicaciones realizadas con estudiantes de posgrado. Relata además los contenidos y estrategias didácticas que pueden ser empleados en cursos de ética y bioética para estudiantes de estomatología y concluye mencionando la aplicación práctica de esta capacitación en los ámbitos docente, institucional y de investigación. PMID:24482556

Rupaya, Carmen Rosa Garcia

2012-01-01

391

Inclusión y exclusión en la escuela moderna argentina: una perspectiva postestructuralista  

Microsoft Academic Search

INCLUSION AND EXCLUSION IN ARGENTINA'S MODERN SCHOOL: A POSTSTRUC- TURALIST VIEW. This article revisits the history of modern schooling in Latin America, using concepts provided by poststructuralist theories on identity and its paradoxical constitution. Questioning the hypothesis that the expansion of schooling was a progressive, ascending movement, the article analizes how a peculiar discursive equivalence between equality and homogenization was

Inés Dussel

2004-01-01

392

Una evaluación de los pronósticos de inflación en Colombia bajo el esquema de inflación objetivo  

Microsoft Academic Search

Based on the understanding of inflation forecasts as an intermediate policy objective, this paper evaluates forecasts of different inflation models in Colombia during the inflation targeting (IT) period. The evaluation is done using three different statistical methodologies. The results suggest that the best models, in terms of precision, are the Food’s Relative Price and the traditional P* models. Additionally, a

Héctor Mauricio Nuñez Amortegui

2005-01-01

393

Evaluación asimétrica de una red neuronal: aplicación al caso de la inflación en Colombia  

Microsoft Academic Search

The objective of the present work is to explore the non-linear relationship between money and inflation in Colombia through an artificial neural network using monthly information for the variation of the consumer price index and the monetary aggregate M3 since January 1982 through February 2005. Artificial neural networks turn up as an excellent alternative for monetary authorities to count on

María Clara Aristizábal Restrepo

2006-01-01

394

El efecto invernadero producido por el CO2 atmosférico: una nueva interpretación termodinámica  

Microsoft Academic Search

The glasshouse effect caused by atmospheric CO2: a new thermodynamic interpretation: At present times the use of models to simulate and predict the climate change and its consequences on global ecological processes has contributed to a better understanding of the phenomena in several disciplines. However, there is evidence that current models fail to simulate a number of well known climatic

EDUARDO R ABRIL

395

Borders and Identity: A Resource Guide for Teachers = Identidad y Fronteras: Una Guia para Maestros.  

ERIC Educational Resources Information Center

The materials in this resource guide include a four-part video, a poster-size cultural map with additional exercises, and the five sections of this guide. The unit, presented in English and Spanish, intends to introduce students to the peoples and cultures of the U.S.-Mexico border, to explore the concept of borders in their own communities, to…

Belauus, Betty; Botein, Emily; Cadaval, Olivia

396

Mujeres dependientes de alcohol o cocaína: un estudio compa- rativo desde una perspectiva cualitativa  

Microsoft Academic Search

Objective: To analyze social behaviours of alcoholic and cocaine-dependent women. Method: Six alcoholic women and six cocaine-dependent women in outpatient treatment made up the study sample. The technique used was that of life history interview. Data analysis was carried out based on Grounded Theory. Results: Alcoholic women become dependent through progressive consumption, while cocaine-dependent women begin cocaine use as consequence

Josefa Gómez; Juan Carlos Valderrama; Tamara Gir V

397

Interacciones y consecuencias del consumo combinado de alcohol y cocaína: una actualización sobre el cocaetileno1  

Microsoft Academic Search

Patients who request treatment for cocaine use and alcohol abuse present differences from those who use cocaine only. Ingestion of alcohol as a detonator of craving and the compulsi- ve search behaviour of cocaine leads to a greater loss of control on use, more social problems, more risk and more antisocial behaviours. Hypothesis: the presence of a metabolite known as

D. RAUL PASTOR; JUAN JOSÉ LLOPIS; D. ABEL BAQUERO

398

Eco-hydrology: Groundwater flow and site factors in plant ecology  

NASA Astrophysics Data System (ADS)

Résumé En écologie végétale, le site est un concept central. Un site, c'est l'endroit où une espèce végétale ou une communauté de plantes se développe le site assure un ensemble de conditions dans lesquelles elles vivent. Dans un matériau homogène à l'origine, l'écoulement gravitaire d'une nappe influence les conditions du site par l'intermédiaire de la distribution spatiale des nutriments et d'autres composés chimiques associés. Les remontées d'eau peuvent tout spécialement produire et maintenir les conditions du site essentielles pour différentes espèces et communautés de plantes relativement rares. Les écologues ont porté une attention accrue à ces remontées d'eau, en sorte qu'une coopération avec les hydrologues en a résulté, avec l'émergence d'une discipline propre, l'éco-hydrologie, à la limite des deux domaines scientifiques et liée au concept de site. Aux Pays-Bas, une classification des types d'eau, basée sur l'histoire de l'eau souterraine à proximité de la surface, a été mise en oeuvre pour constituer une base nationale de données géographiques sur les remontées d'eau d'intérêt écologique. Des analyses des correspondances des données de cette base, portant sur l'existence de certaines espèces de plantes, montrent que dans les sols sableux pauvres du Pléistocène la remontée d'eau explique très bien la présence de certaines espèces et communautés, alors que, dans les plaines fluviales et les régions de polders à sols argileux riches, l'influence de la remontée d'eau est masquée par l'importance des caractéristiques des sols. En conclusion donc, certaines espèces de plantes peuvent être utilisées comme des indicateurs de la remontée d'eau dans des diagnostiques et des levés de terrain rapides, mais à condition de prendre en permanence des précautions sur les limites de l'approche. Resumen En ecología botánica un concepto de gran importancia es el de emplazamiento, definido como el lugar que proporciona unas condiciones de vida adecuadas que permiten el crecimiento de una especie o una comunidad botánica. En un material inicialmente homogéneo, el flujo subterráneo gravífico influencia las condiciones del emplazamiento variando la distribución espacial de los nutrientes y de otros agentes químicos relevantes. En especial, el flujo ascendente puede producir y mantener una serie de condiciones que son esenciales para algunas especies y comunidades de plantas relativamente raras. La especial atención hacia este fenómeno ha dado lugar a una cooperación entre ecologistas e hidrogeólogos y a la aparición de una nueva disciplina - eco-hidrología -, en la frontera de los dos campos científicos. En Holanda, se ha usado una clasificación sencilla de tipos de agua para crear una base de datos, a nivel nacional, de lugares donde la presencia de flujos ascendentes pueda ser de interés ecológico. El análisis de correspondencias entre esta base de datos y los tipos de plantas existentes muestra que en los suelos arenosos pobres del Pleistoceno los flujos ascendentes explican la presencia de algunas especies y comunidades de plantas. Por el contrario, en las llanuras fluviales y pólders, con suelos más arcillosos, la influencia de estos flujos es despreciable frente a la relativa a las propias características de los suelos. Se concluye que las especies botánicas se pueden usar como indicadores de la presencia de flujo ascendente sólo en campañas preliminares, pero que el método presenta grandes limitaciones para su extensión a casos generales.

Klijn, Frans; Witte, Jan-Philip M.

399

La inoculación de plantas con Pantoea sp., bacteria solubilizadora de fosfatos, incrementa la concentración de P en los tejidos foliares Plant inoculation with Pantoea sp., phosphate solubilising-bacteria increases P concentration in leaf tissues  

Microsoft Academic Search

Phosphorus is an essential mineral macronutrient for plant growth and development. Although it can be found in soils in different mineral forms, its low solubility decrease its availability for plants; the nutri- ent should be added to crops as fertiliser. World sources of P are limited and in the near future they will suffer a remarkable decrease. Using P solubiliser

Jorge Cordero Elvia; Patricia Ortega-Rodés; Eduardo Ortega

2008-01-01

400

In-planta detection and monitorization of endophytic colonization by a Beauveria bassiana strain using a new-developed nested and quantitative PCR-based assay and confocal laser scanning microscopy.  

PubMed

Beauveria bassiana strain 04/01-Tip obtained from larvae of the opium poppy stem gall Iraella luteipes endophytically colonizes opium poppy plants and protect it against this pest. Development of a specific, rapid and sensitive technique that allows accurately determining the process and factors leading to the establishment of this strain in opium poppy plants would be essential to achieve its efficient control in a large field scale. For that purpose in the present study, species-specific primers that can be used in conventional or quantitative PCR protocols were developed for specifically identification and detection of B. bassiana in plant tissues. The combination of the designed BB.fw/BB.rv primer set with the universal ITS1-F/ITS4 primer set in a two-step nested-PCR approach, has allowed the amplification of up to 10fg of B. bassiana. This represented an increase in sensitivity of 10000- and 1000-fold of detection than when using the BB.fw/BB.rv primers in a single or single-tube semi-nested PCR approaches, respectively. The BB.fw and BB.rv primer set were subsequently optimized to be used in real time quantitative PCR assays and allowed to accurately quantify B. bassiana DNA in different plant DNA backgrounds (leaves and seeds) without losing accuracy and efficiency. The qPCR protocol was used to monitor the endophytic colonization of opium poppy leaves byB. bassiana after inoculation with the strain EABb 04/01-Tip, detecting as low as 26fg of target DNA in leaves and a decrease in fungal biomass over time. PCR quantification data were supported in parallel with CLMS by the monitoring of spatial and temporal patterns of leaf and stem colonization using a GFP-tagged transformant of the B. bassiana EABb 04/01-Tip strain, which enabled to demonstrate that B. bassiana effectively colonizes aerial tissues of opium poppy plants mainly through intercellular spaces and even leaf trichomes. A decline in endophytic colonization was also observed by the last sampling times, i.e. from 10 to 15days after inoculation, although fungal structures still remained present in the leaf tissues. These newly developed molecular protocols should facilitate the detection, quantification and monitoring of endophytic B. bassiana strains in different tissues and host plants and would help to unravel the factors and process governing the specific endophytic association between opium poppy and strain EABb 04/01-Tip providing key insights to formulate a sustainable strategy for I. luteipes management in the host. PMID:23851123

Landa, B B; López-Díaz, C; Jiménez-Fernández, D; Montes-Borrego, M; Muñoz-Ledesma, F J; Ortiz-Urquiza, A; Quesada-Moraga, E

2013-10-01

401

Analysis of Two in Planta Expressed LysM Effector Homologs from the Fungus Mycosphaerella graminicola Reveals Novel Functional Properties and Varying Contributions to Virulence on Wheat1[W][OA  

PubMed Central

Secreted effector proteins enable plant pathogenic fungi to manipulate host defenses for successful infection. Mycosphaerella graminicola causes Septoria tritici blotch disease of wheat (Triticum aestivum) leaves. Leaf infection involves a long (approximately 7 d) period of symptomless intercellular colonization prior to the appearance of necrotic disease lesions. Therefore, M. graminicola is considered as a hemibiotrophic (or necrotrophic) pathogen. Here, we describe the molecular and functional characterization of M. graminicola homologs of Ecp6 (for extracellular protein 6), the Lysin (LysM) domain-containing effector from the biotrophic tomato (Solanum lycopersicum) leaf mold fungus Cladosporium fulvum, which interferes with chitin-triggered immunity in plants. Three LysM effector homologs are present in the M. graminicola genome, referred to as Mg3LysM, Mg1LysM, and MgxLysM. Mg3LysM and Mg1LysM genes were strongly transcriptionally up-regulated specifically during symptomless leaf infection. Both proteins bind chitin; however, only Mg3LysM blocked the elicitation of chitin-induced plant defenses. In contrast to C. fulvum Ecp6, both Mg1LysM and Mg3LysM also protected fungal hyphae against plant-derived hydrolytic enzymes, and both genes show significantly more nucleotide polymorphism giving rise to nonsynonymous amino acid changes. While Mg1LysM deletion mutant strains of M. graminicola were fully pathogenic toward wheat leaves, Mg3LysM mutant strains were severely impaired in leaf colonization, did not trigger lesion formation, and were unable to undergo asexual sporulation. This virulence defect correlated with more rapid and pronounced expression of wheat defense genes during the symptomless phase of leaf colonization. These data highlight different functions for MgLysM effector homologs during plant infection, including novel activities that distinguish these proteins from C. fulvum Ecp6. PMID:21467214

Marshall, Rosalind; Kombrink, Anja; Motteram, Juliet; Loza-Reyes, Elisa; Lucas, John; Hammond-Kosack, Kim E.; Thomma, Bart P.H.J.; Rudd, Jason J.

2011-01-01

402

Cloning and expression analysis of NhL1, a gene encoding an extracellular lipase from the fungal pea pathogen Nectria haematococca MP VI (Fusarium solani f. sp. pisi) that is expressed in planta.  

PubMed

The filamentous fungus Nectria haematococca (anamorph Fusarium solani f. sp. pisi) resides in soil, and attacks pea seedlings in the area of the underground epicotyl and upper tap root, causing foot rot disease. We detected lipase activity during in vitro growth of N. haematococca. Subsequently, a lipase gene was cloned and functionally characterised by heterologous expression in Saccharomyces cerevisiae. The full-length cDNA of 1152 bp was cloned using a 3' RACE-PCR approach coupled with cDNA library screening. The genomic clone, comprising an ORF of 999 bp interrupted by two introns of 56 and 64 bp, was isolated from a newly constructed lambda phage library. Analysis of the deduced protein sequence revealed the presence of a typical signal peptide at the N-terminus, and of the three conserved amino acids forming the active site of lipases. The lipase of N. haematococca has a low degree of similarity to the lipases from Humicola lanuginosa (37.2%), Rhizomucor miehei (21.6%), Rhizopus delemar (23.1%), Rhizopus niveus (25.9%), and to mono- and diacylglycerol lipase from Penicillium camembertii (30.8%), and very high similarity (94.6%) to a lipase from Fusarium heterosporum. The lipase from N. haematococca shows maximal activity at 37 degrees C and pH 8.0. Based on Southern analysis, the lipase clone represents a single-copy gene in N. haematococca. Expression analysis was performed by RT-PCR. In vitro, the lipase gene shows a low basal expression, but is highly inducible by lipase substrates, and repressed by glucose. During plant infection, transcripts of this fungal lipase gene were detected 4, 8, and 10 days after infection. PMID:11361331

Nasser Eddine, A; Hannemann, F; Schäfer, W

2001-04-01

403

Importancia de las plantas medicinales en el autocuidado de la salud en tres caseríos de Santa Ana Trujillo, Venezuela. The importance of medicinal plants in health care in three small villages of the Santa Ana county at Trujillo state, Venezuela  

Microsoft Academic Search

In order to gather some information about the importance of medicinal plants in the primary health care, the use of plants in three small villages of the Santa Ana county, Pampán municipality at Trujillo State, Venezuela, was quantitatively analyzed. To do this, a local epidemiology diagnosis was carried out and the etnopharmacological information obtained was recorded using the TRAMIL survey.

TEOLINDA CARRILLO-ROSARIO Y GLENDA

404

Interplay of light and temperature during the in planta modulation of C4 phosphoenolpyruvate carboxylase from the leaves of Amaranthus hypochondriacus L.: diurnal and seasonal effects manifested at molecular levels  

PubMed Central

The interactive effects of light and temperature on C4 phosphoenolpyruvate carboxylase (PEPC) were examined both in vivo and in situ using the leaves of Amaranthus hypochondriacus collected at different times during a day and in each month during the year. The maximum activity of PEPC, least inhibition by malate, and highest activation by glucose-6-phosphate were at 15.00?h during a typical day, in all the months. This peak was preceded by maximum ambient light but coincided with high temperature in the field. The highest magnitude in such responses was in the summer (e.g. May) and least in the winter (e.g. December). Light appeared to dominate in modulating the PEPC catalytic activity, whereas temperature had a strong influence on the regulatory properties, suggesting interesting molecular interactions. The molecular mechanisms involved in such interactive effects were determined by examining the PEPC protein/phosphorylation/mRNA levels. A marked diurnal rhythm could be seen in the PEPC protein levels and phosphorylation status during May (summer month). In contrast, only the phosphorylation status increased during the day in December (winter month). The mRNA peaks were not as strong as those of phosphorylation. Thus, the phosphorylation status and the protein levels of PEPC were crucial in modulating the daily and seasonal patterns in C4 leaves in situ. This is the first detailed study on the diurnal as well as seasonal patterns in PEPC activity, its regulatory properties, protein levels, phosphorylation status, and mRNA levels, in relation to light and temperature intensities in the field. PMID:21045006

Avasthi, Uday K.; Izui, Katsura; Raghavendra, Agepati S.

2011-01-01

405

REFLECTIVIDAD Y ABSORTIBIDAD DE LA RADIACIÓN EN TRES DENSIDADES DE PLANTA Y SU RELACIÓN CON EL RENDIMIENTO DE MAÍZ (VARIEDAD CAFIME) RADIATION REFLECTIVITY AND ABSORPTIVITY IN THREE PLANT DENSITIES AND ITS RELATION TO CORN YIELD (CAFIME VARIETY)  

Microsoft Academic Search

An experiment was carried out to evaluate total solar radiation and photosynthetic active radiation reflectivity and absorptivity in three plant densities (6.9, 8.9, and 12.5 plants m? ? ? ? ?2) of CAFIME variety corn (Zea mays L.) and their relations with plant growth and yield. Reflectivity and absorptivity of the crop canopy in the plant densities was evaluated by

Alejandro Zermeño-González; José A. Montemayor-Trejo; Juan Munguía-López; Luis Ibarra-Jiménez; Martín Cadena-Zapata

2005-01-01

406

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

SciTech Connect

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

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

2007-03-15

407

Informe Anual a la Nación indica una reducción en los índices de incidencia y mortalidad por cáncer; una sección especial revela amplias variaciones en las tendencias del cáncer de pulmón en los estados  

Cancer.gov

Un nuevo informe de las principales organizaciones oncológicas del país muestra que, por primera vez desde la primera publicación del informe en 1998, tanto el índice de incidencia como el de mortalidad para todos los cánceres combinados están disminuyendo en hombres y mujeres.

408

Una exposici interactiva, organitzada per la Real Sociedad Matemtica Espaola (RSME) en ocasi del seu cen-tenari, que posa de manifest diverses interrelacions entre les matemtiques i l`art. s una adaptaci de l`exposici  

E-print Network

particulars. Es poden descarregar gra- tuïtament de www.rsme-imaginary.es Imaginary-Cinderella i Morenaments Amb Cinderella es poden crear ràpidament construc- cions geomètriques i simulacions físiques virtuals

Oro, Daniel

409

Una noria gtica en el claustro de la Catedral de Toledo Amalia M Yuste Galn y Jean Passini Tras la observacin y anlisis de una de estrecha cmara, situada bajo la panda sur del claustro, y su relacin  

E-print Network

adaptación al nuevo edificio gótico. A Gothic waterwheel at the cloister of the Cathedral of Toledo After times in the Cathedral, the first third of the fifteenth century. During those years they worked system of recovery, storage and use of water in the great cathedral building. It's a complex

Paris-Sud XI, Université de

410

Liderazgo: una mirada desde directivos, profesores y alumnos1 Leadership: A glance from directors, teachers and students viewpoint  

Microsoft Academic Search

Considering scholastic management from a global perspective, it is important to acknowledge that learning efficiency in students and faculty effectiveness are affected by leadership. The purpose of the present research was to learn the meaning that directors, teachers and students attribute to the concept of leadership in three different educational establishments, that is, public, subsidized and private establishments, in Temuco

Verónica Sánchez; Carmen Tapia; Sandra Becerra

411

FACTORES PREDICTORES DEL ABANDONO DE LA INTERVENCIÓN PSICOLÓGICA GRUPAL EN UNA MUESTRA DE PACIENTES CON CÁNCER DE MAMA  

Microsoft Academic Search

Between these To examine the socioeco- nomic, medical and coping factors that may predict dropping out of group psychotherapy in a sample of women recently diagnosed of breast cancer. 62 breast cancer patients undergoing onco- logic treatment and attended a group psycho- therapy program were included in the study. In the assessment interview we obtained informa- tion about their socioeconomic

Nuria Sánchez; Ana Torres; Natalia Camprubí; Ángela Vidal; Manel Salamero

2005-01-01

412

¿Es útil la amniotomía de rutina en el trabajo de parto de inicio espontáneo? Una revisión de la literatura  

Microsoft Academic Search

Systematic amniotomy in pregnant women with spontaneous labor is largely practiced in Peruvian and world hospitals with documented prevalence up to 77%. Little is known on benefits and harms resulting to both fetus and mother. We searched the medical literature in order to find solid evidence to support or reject this practice. We conclude that systematic amniotomy alters the physiological

Walter Ventura; Nelly Lam-Figueroa; Unidad de Medicina Fetal

2008-01-01

413

How To Start a Family Day Care = Como Iniciar una Guarderia en El Hogar. [Videotape and Viewer's Guide].  

ERIC Educational Resources Information Center

Being a family day care provider is work that requires professional responsibilities and attention to the physical, emotional, and educational well-being of children; listening and responding to parents; and running a business. This videotape, in English- and Spanish-language versions, explores the elements involved in starting up a family day…

Raphael, Doris; Weisman, Douglas

414

Esercizi di laboratorio 1. Aggiungere ai preferiti una cartella denominata 'Motori di ricerca' dentro cui salvare l'indirizzo di  

E-print Network

valori qualunque nelle celle da 1 a 6 della colonna B e i valori 0,5 e 0,1 nelle celle F1 ed G1 colonna inserire 8 temperature in gradi Celsius (cioè in gradi centigradi) e nelle due colonne a destra, utilizzando laddove possibile il copia-incolla, inserire accanto ad ogni riga (es. cella G2 per la riga 2) la

Anselma, Luca

415

Cambios en el Mundo del Trabajo y la Salud de Las Mujeres: Una Revision desde America Latina  

E-print Network

en Malinalco: la salud al margen de la medicina, México, Elmedicina oriental • los servicios y las técnicas para fomentar la saludsalud y la enfermedad (socialización, nutrición, higiene, remedios, modos de atención y cuidado) • la atención de determinadas condiciones según la medicina

Rubin-Kurtzman, Jane R.; Denman Champion, Catalina A.; Monteverde, Gabriela Grijalva

2006-01-01

416

LO CULTO Y LO POPULAR. MEDICINA LETRADA \\/ MEDICINA TRADICIONAL. HACIA UNA PRACTICA UNIFICADA DE LOS CONOCIMIENTOS MEDICOS* (\\  

Microsoft Academic Search

Debatir acerca de los procesos de integración del saber letrado con los conocimientos populares será el objetivo del presente trabajo. Se parte del análisis de un ejemplo empírico que marca el aparente antagonismo existente entre \\

IGNACIO BEJARANO

417

Compartiendo la Ciencia con los Ninos: Una Guia para los Padres (Sharing Science with Children: A Guide for Parents).  

ERIC Educational Resources Information Center

This guide offers Spanish-speaking parents ways in which they can help their children learn about science at home and in the community. Science is a way of looking at the world. It uses everyday techniques such as observation and classification to give us information about things and how they work. Advice to parents that want to support their…

North Carolina Museum of Life and Science, Durham.

418

Criteri di esistenza di soluzioni periodiche per una classe di equazioni differenziali del secondo ordine non lineari  

Microsoft Academic Search

Sommario  Si stabiliscono criteri sufficienti per l'esistenza di soluzioni periodiche di periodo ? per equazioni del tipo\\u000a \\u000a \\u000a \\u000a \\u000a $$\\\\ddot x + f(x, \\\\dot x)\\\\dot x + g(x) = e(t)$$\\u000a \\u000a \\u000a \\u000a \\u000a \\u000a con e(t) funzione periodica di periodo ?.

Gaetano Villari

1964-01-01

419

Consumo de psicofármacos. Prevalencia y factores asociados al consumo en una población de gemelos de la Región de Murcia.  

E-print Network

??Analizar la contribución relativa de factores ambientales y genéticos al consumo de psicofármacos y determinar la prevalencia de dicho consumo relacionándolo con variables sociodemográficas y… (more)

Rosagro Escámez, Francisco

2013-01-01

420

Determinación de la Distribución Primaria de Corriente en la Superficie de una Varilla de Acero en Concreto  

Microsoft Academic Search

The Method of Fundamental Solutions (MFS) is a variant of the Boundary Element Method (BEM) where the problem of singular integrals is eliminated by consider the solution to the boundary value problem like a linear combination of Laplace fundamental solution. In the present work the MFS is applied to obtain the primary current distribution around a reinforcement rod immersed in

Núñez Jaquez; Baltazar Zamora; Calderon Guillen; Circuito G. Aguirre; Beltrán S

421

Una pequeña historia alrededor del espacio de Hidráulica y Riegos en la Escuela de Ingenieros Agrónomos de Madrid  

Microsoft Academic Search

La creación y la supresión de la Escuela Central de Agricultura en Aranjuez son los elementos de referencia para el hilo argumental de esta pequeña historia que arranca con el nacimiento de la Escuela de Ingenieros Agrónomos de Madrid, en 1869, y sigue con el desarrollo de la misma, hasta la fecha, con leves pinceladas sobre sus instalaciones y, en

Alberto Losada Villasante; Leonor Rodríguez Sinobas; Raúl Sánchez Calvo; Luís Juana Sirgado

2007-01-01

422

PROPUESTA DE PROCEDIMIENTO PARA UNA EVALUACIÓN TÉCNICO – ECONÓMICA A APLICAR EN UN PROYECTO DE REHABILITACIÓN DE REDES HIDRÁULICAS  

Microsoft Academic Search

Para la realización de esta propuesta se analizaron y discutieron diversos procedimientos de evaluación de proyectos de infraestructura como los desarrollados por Sepúlveda Palacios , Ibarra Pardo y Contreras en aras de determinar las similitudes y formular la propuesta adaptable a las condiciones de Cuba y del sector objeto de análisis. Se tuvo además en cuenta la experiencia nacional e

Inocencio Raúl Sánchez Machado; Jorge Luis Vidal Cárdenas; Mignelys Garcia Bello

2009-01-01

423

USO DE UN MODELO BASADO EN EVENTOS PARA EVALUAR LA CONDUCTIVIDAD HIDRÁULICA EN UNA CUENCA DE PEQUEÑAS DIMENSIONES  

Microsoft Academic Search

En base a estos resultados, se recomienda que las acciones que puedan contribuir a reducir la escorrentía y por tanto la erosión del suelo apliquen durante dicho período, dado que en él los valores de conductividad hidráulica se alejan del óptimo durante un intervalo importante.

A. Paz González; B. Soto González; E. López Periago

424

INTRODUCCION A UNA COMPARACION FONOLOGICA DEL ESPANOL Y DEL INGLES. (INTRODUCTION TO A PHONOLOGICAL COMPARISON OF SPANISH AND ENGLISH).  

ERIC Educational Resources Information Center

A PHONOLOGICAL COMPARISON WAS MADE BETWEEN ENGLISH AND SPANISH. THE PRINCIPAL REFERENCE USED FOR ENGLISH ANALYSIS WAS "AN OUTLINE OF ENGLISH STRUCTURE" BY TRAGER AND SMITH. THE PRINCIPAL REFERENCE USED FOR SPANISH ANALYSIS WAS "SPANISH JUNCTURE AND INTONATION" BY STOCKWELL, BOWEN, AND SILVA-FUENZALIDA. THE PRONUNCIATION PROBLEMS COMMON TO A…

CARDENAS, DANIEL N.

425

Geometria diferencial. Problemas 1 1. Como podriamos definir una variedad con borde? Sugerencia: permite que las cartas sean  

E-print Network

: permite que las cartas sean homeomorfismos o bien sobre un abierto (o bola) de Rn o bien sobre el´iamos haber asumido que todas las cartas son difeomorfismos sobre la bola de radio 1. Probar que tambi´en podr

Enciso, Alberto

426

OPTIMIZACIÓN DE UNA POLÍTICA DE INVENTARIOS POR MEDIO DE BÚSQUEDA TABÚ INVENTORY POLICIES OPTIMIZATION USING TABU SEARCH  

Microsoft Academic Search

Ingles: The inventory management problem assumes the estimation of some parameters which are associated to demand, costs and lead time. This work studies and efficient inventory policy for a real application, with the aid of an optimization model adapted from the literature which uses: variable lead time, service levels and order frequency. The solution to this problem was obtained by

Andrea Urrea; Fidel Torres

427

La formación del profesorado en el uso educativo de las TIC: una aproximación desde la política educativa  

Microsoft Academic Search

In recent years, the huge development of digital information and the commu- nication technologies, which have been presented as the panacea of education, has grasped a great dose of attention. In this article, after expressing our position in front of technology, we briefly char- acterize an optimistic discourse around the digital technologies that not only has failed to fill the

Juana M. SANCHO; Adriana ORNELLAS; Joan Anton SÁNCHEZ; Cristina ALONSO; Alejandra BOSCO

2008-01-01

428

Propuestas para una reconceptualizacion surrealista y postmoderna de la sexualidad femenina en los textos de Cristina Escofet e Isabel Allende  

Microsoft Academic Search

Female sexuality has commonly been viewed as the passive counterpart of male sexuality. Building upon Adrienne Rich's theory of compulsive heterosexuality, I would suggest that the fundamental location of this problem lies within the subconscious. Cristina Escofet's stance on this issue is to argue in favor of a deconstruction of Jungian archetypes, revealing their constructed rather than intrinsic character. In

Zoila Clark

2009-01-01

429

PREVENCI?N DEL VIH/SIDA EN LOS CIRCUITOS DE LEVANTE HSH: UNA ASIGNATURA PENDIENTE1  

PubMed Central

Resumen A partir de un relevamiento de tipo etnográfico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus prácticas sexuales. El reconocimiento de tales espacios, así como las características que asumen en ellos los encuentros sexuales entre los HSH, plantean obstáculos específicos en la adopción de comportamientos preventivos y, asimismo, generan nuevos desafíos para las actividades de prevención. Se plantean las dificultades y debates conceptuales que la misma categoría presenta, y sus consecuencias en el abordaje preventivo y teórico-metodológico para las ciencias sociales. Además, se proponen nuevos interrogantes acerca de los alcances y las limitaciones del modelo preventivo del VIH/Sida para HSH. PMID:21874154

Barreda, Victoria; Carballo-Dieguez, Alex; Marone, Ruben; Balan, Ivan; Pando, Maria Angeles; Avila, Maria Mercedes

2011-01-01

430

Producción y rendimiento reproductivo en Petrolisthes granulosus (Decapoda, Anomura, Porcellanidae) en diferentes localidades del norte de Chile: Una comparación latitudinal  

Microsoft Academic Search

Ovigerous females of the porcellanid crab Petrolisthes granulosus were collected in the northern zone of Chile, to analyze latitudinal variations in their reproductive biology. Samples were taken from five localities situated between 18°33'S to 25°20'S. The average fecundity values for both locality and size strata, size of minimum sexual maturity, reproductive output and egg volume in the final stage of

Patricio Hernáez Bové

2001-01-01

431

LO EPISTEMOLÓGICO EN LO RETÓRICO: UNA MIRADA AL DISCURSO DE LAS CIENCIAS DE LA EDUCACIÓN DESDE LA LSF  

Microsoft Academic Search

One of the multiple applications of the hallidaian model attends the textual analysis of the scientific prose (Halliday & Martin 1993; Martin & Veel 1998), area in which the Functional Grammar has been engaged in describing the scientific language and explaining different aspects of its evolution in history. Our research about the history of the scientific discourse, with particular reference

Patricia VALLEJOS LLOBET

2006-01-01

432

Tratamiento quirúrgico de una hiperplasia fibrosa localizada en la desembocadura del conducto de Estenon. Descripción de la técnica  

Microsoft Academic Search

The fibrous hyperplasia is an exofitic injury circumscribed and formed by dense fibrous conective weave, covered by epithelio squamous stratified. lt is located with more frequency in the buccal mucosa, gingiva, tongue and soft palate, generally zones where greater rubbing takes place, since his etiopathogenia seems to be related to chro­ nic irritatives or traumatic repeated factors. The treatment is

Camacho Alonso F; Saura Inglés A; López Jornet P; Bermejo Fenoll A

433

El proyecto DIME y el robot conversacional Golem: Una experiencia multidisciplinaria entre la computacin y la lingstica  

E-print Network

manera como se interactúa con las máquinas y tendrá un gran impacto en varios ámbitos de la vida social y centers", o en las industrias del turismo y el entretenimiento. La reducción del tamaño de los

Pineda, Luis

434

La Universidad de Alicante dedica una semana a la robtica y la Alicante, 5 de septiempre de 2013  

E-print Network

Prometeo 2013. El comité científico está encabezado por Fernando Torres Medina. Entre otros, se abordarán, telecomunicaciones o áreas afines. Será inaugurado oficialmente por el rector de la UA, Manuel Palomar, y el director

Escolano, Francisco

435

Precio del agua y relocalización del recurso en la economía andaluza. Una aproximación desde un modelo de equilibrio general aplicado  

Microsoft Academic Search

El objetivo de este trabajo consiste en analizar los efectos que tendría un incremento en la tarifa del agua del sector agrario sobre la conservación del recurso, la eficiencia en el consumo y la posible relocalización del mismo entre los diferentes sectores productivos. La política tarifaria se aplicará sobre el sector agrario debido, por un lado, al excesivo consumo de

M. Alejandro Cardenete; G. J. D. Hewings; E. Velázquez

2005-01-01

436

Gerarchia, comportamento agonistico e gestione dei conflitti in una colonia di gorilla di pianura (Gorilla gorilla gorilla).  

E-print Network

??Riconciliazione, consolazione e appeasement sono comportamenti post-conflittuali che, all’interno della famiglia dei Pongidi, sono stati documentati e studiati soltanto per i membri appartenenti al genere… (more)

Chiarugi, Elena

2006-01-01

437

Una nueva prueba para el parámetro de diferenciación fraccional A New Test for the Fractional Differencing Parameter  

Microsoft Academic Search

This paper presents a new test for the fractional differencing parame- ter of an ARFIMA model, based on an autoregressive approximation of its short-range component. The test's behavior is studied using Monte Carlo simulations under a normal distribution and is compared to results found for others well-known long memory tests. In general, the results show that

Elkin Castaño; Karoll Gómez; Santiago Gallón

2008-01-01

438

Iridio: Una opción para medir el potencial redox Iridium: An option for measurement of the redox potential  

Microsoft Academic Search

Some relevant results are presented of research leading to an alternative redox electrode to platinum. Several different electrodes were subjected to experiments under controlled conditions, mainly in artificial seawater. Among those tested were platinum, graphite, glassy carbon, gold and iridium. Our results, when combined with those estimated by using a model based on the MINEQL+ program, suggest that the O2\\/H2O2

Lorena M. Ríos-Mendoza; J. Vinicio Macías-Zamora; Alberto R. Zirino-Weiss; Naval Command

2003-01-01

439

El sexo recompensado: una práctica en el centro de las vulnerabilidades (ITS\\/VIH\\/SIDA) de las jóvenes mexicanas  

Microsoft Academic Search

Objective. To discuss the risks for Mexican young women who engage in sexual relations in exchange for social or economic benefits, also known as compensated sex (CS), with the objective of exploring its possible public health implications. Material and Methods. This is a qualitative study conducted in youths 15 to 25 years of age in Cuerna- vaca, Morelos, Mexico, between

Florence Lise Théodore; Juan Pablo Gutiérrez; Pilar Torres; Gabriela Luna

2004-01-01

440

Desarrollo de una intervenci?n grupal para la prevenci?n del VIH en parejas heterosexuales1  

PubMed Central

HIV preventive efforts with heterosexual couples are almost nonexistent. We designed a group intervention based on the Information-Motivation-Behavioral Skills model with the aim of increasing male condom use and promoting the practice of mutual masturbation as a safer sex alternative. We carried out a pilot study with four couples to evaluate the feasibility of the intervention and the aspects of content and format that needed to be modified. Findings reflect that participants were very satisfied with the intervention and they found it entertaining and innovative. They were very comfortable with its format, as well as with the activities. The findings confirm the feasibility of this intervention and the need to direct preventive efforts to this population. PMID:23847716

Perez-Jimenez, David; Escabi Montalvo, Aracelis; del Carmen Cabrera Aponte, Maria

2012-01-01

441

DISEÑO DE UNA ESTRATEGIA PROMOCIONAL PARA UN NUEVO SEGMENTO DE MERCADO: PROGRAMA MBA-FULL TIME, EGADE-MONTERREY  

Microsoft Academic Search

En el presente trabajo se muestra la problemática que enfrenta la Escuela de Graduados en Administración y Dirección de Empresas (EGADE) del Tecnológico de Monterrey, Campus Monterrey, en cuanto a la captación de matrícula para su programa de MBA-Full Time, que es el pilar fundamental de esta importante escuela de negocios; para ello se identificó un importante segmento de mercado

Héctor Cuevas Vargas; Rudy Fernández Escobedo; Leticia Almanza Serrano

2010-01-01

442

Abundancia, estructura poblacional y crecimiento de Atrina maura (Bivalvia: Pinnidae) en una laguna costera tropical del Pacífico mexicano  

Microsoft Academic Search

The abundance, population structure, and growth of the Pen-shell Atrina maura in the Corralero- Alotengo tropical lagoon system in Oaxaca, Mexico, were studied from February to September of 1997. An abundance analysis showed significant temporal and spatial differences (Kruskal-Wallis, p< 0.001). Two spatial groups of abundance were found in the area, one from the mouth of the lagoon system to

Miguel Angel Ahumada-Sempoal; Saúl Jaime Serrano-Guzmán; Noe Ruiz-García

2002-01-01

443

Si Su Hijo cartamudea: Una Guia para los Padres (If Your Child Stutters: A Guide for Parents). Publication No. 15.  

ERIC Educational Resources Information Center

This Spanish language booklet is written for parents who are concerned about the speech of their young child. The goal of the booklet is to enable parents to begin working with their child, and a speech clinician if necessary, with a better understanding of the problem. The booklet discusses common parental questions such as: (1) Does my child…

Speech Foundation of America, Memphis, TN.

444

La Formacion Docente y la Educacion Primaria en Una Propuesta de Cambio (Teacher Training on Education: A Proposal for Change).  

ERIC Educational Resources Information Center

In order to raise the quality of teaching and teacher education in Uruguay, a program of innovation and change was considered at a 1986 educational conference. Conference goals included identifying ways to: (1) increase opportunities to promote innovation and change; (2) search for strategies to encourage creative problem solving; (3) increase…

Fernandez, Enrique Alonso, Ed.

445

La mortalidad en una parroquia novohispana del Valle de Toluca: Calimaya en los siglos XVII y XVIII  

E-print Network

parroquias rurales novohispanas. Son de citar, en ese campo, los trabajos pioneros de Thomas Calvo, Monique Lebrun y Claude Moriniv . En cuanto a mortalidad se refiere Calvo subrayó el impacto de la crísis de 1737

Paris-Sud XI, Université de

446

El Cid de las Mocedades El tema de esta ponencia ser una interpretacin histrica del Cid de las  

E-print Network

tenía que ver la alusión del título provisional de mi ponencia a los linajes de las Tierras de Campos organiza el significado de la obra. �sta es la célula común : la descendencia de Laín Calvo, antepasado Mendoza. La genealogía cidiana encabezada por Laín Calvo da además a Rodrigo un hermano bastardo

Paris-Sud XI, Université de

447

SOSTENIBILIDAD DEL RECICLAJE DE RESIDUOS DE LA AGROINDUSTRIA AZUCARERA: UNA REVISIÓN SUSTAINABLE RECYCLING OF WASTE FROM SUGARCANE AGROINDUSTRY: A REVIEW  

Microsoft Academic Search

Sugar cane wastes and reuse strategies are a prior subject in sugar cane areas because of the new environmental standards and modern production systems. The overall goal of the present review is to analyze the environmental impact from sugar cane agroindustry and its recycling processes on the bases of a sustainable development planning. Literature review results consider that there are

R. Basanta; M. A. García Delgado; J. E. Cervantes Martínez; H. Mata Vázquez; G. Bustos Vázquez

2007-01-01

448

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.

449

Recursos asistenciales en ictus en España 2010: análisis de una encuesta nacional del Grupo de Estudio de Enfermedades Cerebrovasculares  

Microsoft Academic Search

IntroductionStroke is currently a major social health problem. For this reason, the Spanish Ministry of Health approved the Stroke National Strategy (SNS) in 2008 to improve the prevention, treatment and rehabilitation of stroke patients. This plan intends to guarantee 24-hour, 365-days neurological assistance in the whole country by the end of 2010. Our aim was to analyse the situation of

J. C. López Fernández; J. Arenillas Lara; S. Calleja Puerta; E. Botia Paniagua; I. Casado Naranjo; E. Deyá Arbona; B. Escribano Soriano; M. M. Freijo Guerrero; D. Geffners Sclarsky; A. Gil Núñez; A. Gil Peralta; A. Gil Pujadas; C. Gómez Escalonilla; A. Lago Martin; J. Larracoechea Jausoro; I. Legarda Ramírez; J. Maestre Moreno; J. L. Manciñeiras Montero; S. Mola Caballero De Rodas; F. Moniche Álvarez; R. Muñoz Arrondo; J. A. Vidal Sánchez; F. Purroy García; J. M. Ramírez Moreno; M. Rebollo Álvarez Amandi; F. Rubio Borrego; T. Segura Martin; J. Tejada García; C. Tejero Juste; J. Masjuan Vallejo

2011-01-01

450

Prácticas de gestión tecnológica en la industria de la construcción: el caso de una empresa pública de ingeniería civil  

Microsoft Academic Search

In order to grow, today's companies have to develop new and better products or services. One way to accomplish this task is through technology management. In Mexico, there is a National Award given to those organizations that have become more competitive by means of an efficient management system. Private businesses operating in the telecommunication, electrodomestic and pharmaceutical sectors have won

451

Las categorías o facetas fundamentales: una metodología para el diseño de taxonomías corporativas de sitios web argentinos  

Microsoft Academic Search

Faceted analysis has been reassessed in last years for designing corporative taxonomies. In order to confirm its usefulness, we analyzed the Web sites of different Argentine organizations: three wineries, three food industries, six football clubs, five professional associations, three university schools, and five government agencies. From the 16 fundamental categories or facets proposed by the Classification Research Group, wineries coincide

Ana Martínez; Cristina Ristuccia; Rosa Pisarello; Edgardo Stubbs; Laura Caminotti; José Balparda; Julia Valdez; Norma Mangiaterra

2004-01-01

452

CQUIENES SON, QUE PIENSAN Y QUE SABEN LOS FUTUROS MAESTROS Y PROFESORES DE CIENCIAS?: UNA REVISION DE ESTUDIOS RECIENTES  

Microsoft Academic Search

In this article 1 review some recent studies on Spanish pre-service primary and secondary education science teachers. The curriculum for initial trainig of scoolteachers are reviewed. In addition, the initial training of secondary teachers. 1 have reviewed the most recent works on ideas, expectatives, epistemological beliefs and science knowledge of preservice school teachers. In adition, 1 review the few works

JUAN MIGUEL CAMPANARIO

453

Our Treasures: A Celebration of Nebraska's Mexican Heritage = Nuestros Tesoros: Una celebracion de la herencia mexicana de Nebraska.  

ERIC Educational Resources Information Center

This publication is intended as a resource guide for teachers, students, and librarians interested in Mexican American culture, and for groups wishing to conduct local community research using oral histories. The Mexican American Traditions in Nebraska project was designed to document and preserve the richness of Nebraska's Mexican culture. The…

Nebraska State Historical Society, Lincoln.

454

Extenso estudio realizado en muchos centros demuestra que hay una precisión comparable de la colonoscopia virtual con la colonoscopia convencional  

Cancer.gov

Según los resultados del Estudio Nacional de Colografía de Tomografía Computarizada de la American College of Radiology Imaging Network, ACRIN, la colografía de tomografía computarizada, también conocida como colonoscopia virtual, es comparable a la colonoscopia convencional en su capacidad para detectar con precisión cáncer y pólipos precancerosos y podría servir como examen selectivo inicial de detección de cáncer colorrectal. La colonoscopia convencional usa un tubo largo, flexible, con cámara, para ver el revestimiento del colon.

455

Reconnaissance evaluation of Honduran geothermal sites. Una evaluacion por medio de reconocimiento de seis areas geotermicas en Honduras  

SciTech Connect

Six geothermal spring sites were selected on the basis of preliminary investigations conducted in Honduras over the last decade and were evaluated in terms of their development potential. Of the six, the Platanares and San Ignacio sites have high base temperatures and high surface fluid discharge rates and appear to have the best potential for further development as sources of electrical power. A third site, Azacualpa, has a high enough base temperature and discharge rate to be considered as a back-up, but the logistical problems involved in geophysical surveys make it less attractive than the two primary sites. Of the remaining three sites, Pavana may be a source of direct-use heat for local agricultural processing. Sambo Creek and El Olivar have either severe logistical problems that would impede further investigation and development or base temperatures and flow rates that are too low to warrant detailed investigation at this time.

Eppler, D.; Fakundiny, R.; Ritchie, A.

1986-12-01

456

Política antiherética en la Corona de Aragón: Una carta inédita de Inocencio III a la reina Sancha (1230)  

Microsoft Academic Search

This article studies the text and context of an unedited seventeenth century copy of the famous bull Vergentis in Senium of Pope Innocent III, which he sent in 1203, during the reign of Peter the Catholic, to Queen Sancha of Aragon, widow of Alfonso the Troubadour. The letter was sent in response to a petition for advice from Sancha as

Martín Alvira Cabrer; Damian J. Smith

2006-01-01

457

RIQUEZA Y DIVERSIDAD DE ESPECIES DE AVES EN UNA SELVA MEDIANA SUBPERENNIFOLIA EN EL CENTRO DE VERACRUZ, MÉXICO  

Microsoft Academic Search

We report the richness and diversity of bird species in three different areas (pasture, regenerating forest and mature forest) in Semievergreen forest from central Veracruz, Mexico. Out of the 171 bird species observed, 45% are abundant, 35% are scarce, and 35% rare; 112 species are permanent residents and 59 migratory species. In the regenerating forest 126 species were observed, as

José Cruz; BOJORGES BAÑOS; Lauro LÓPEZ-MATA

458

Tejiendo una red de resiliencia = weaving a web of resilience : Internal displacement, social networks and urban integration in Cartagena, Colombia  

E-print Network

There are over 28.8 million internally displaced persons (IDPs) in the world today because of conflict, human rights violations and situations of generalized violence. Colombia's protracted internal armed conflict, which ...

Pollock, Jody (Jody Tamar)

2013-01-01

459

Books in Spanish for Children and Young Adults: An Annotated Guide (Libros Infantiles y Juveniles en Espanol: Una Guia Anotada).  

ERIC Educational Resources Information Center

Intended to aid teachers, librarians, and others in the selection of Spanish-language books for children in grades K-12, the annotated guide includes books by Hispanic authors which highlight the lifestyle, folklore, heroes, history, fiction, poetry, theatre, and classical literature of Hispanic cultures. Most books included in the guide have been…

Schon, Isabel

460

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

E-print Network

garantizar que el comercio internacional de animales y plantas no amenace su supervivencia en la naturaleza. Los animales o plantas enu- merados en CITES que son tomados de alta mar --definido como "el entorno

461

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

E-print Network

garantizar que el comercio internacional de animales y plantas silvestres no amenaza su supervivencia en la naturaleza. Los animales o plantas enumerados en CITES que son tomados de alta mar ­ definida como «el

462

EUROPEAN WILD BOAR PUREBRED AND SUS SCROFA INTERCROSSES. DISCRIMINATION PROPOSALS. A REVIEW EL JABALI EUROPEO PURO Y MESTIZOS DE SUS SCROFA. PROPUESTAS DE DISCRIMINACION. UNA REVISION  

Microsoft Academic Search

This paper reviews the literature about differentiation between European wild boars, pigs (feral and do- mestic) and their crosses. In the past, cranial and external body measurements, coat coloration patterns and hair measurements were used with limited success, as a differentiating method. Later, the differential ch- romosomal number offered better possibilities of discrimination, where 2n36 is the diploid number of

Paula Aravena; Oscar Skewes

2007-01-01

463

Desarrollo de una Interfaz de Control para un Observatorio Astronómico Robotizado con fines educativos en la Facultad de Ciencias Exactas; Físicas y Naturales de la UNSJ  

NASA Astrophysics Data System (ADS)

We report the development and the construction of an Interface to Control a robotized Astronomical Observatory (ICOA), which allows to control the operation of an observatory based on a Meade LX200 telescope. The interface operates together with a computer to control and supervise all the local variables of the observatory, and can take the control of it in risky situations. It serves as a link among the control computer and all the necessary devices for the astronomical observation such as the telescope, the dome, the weather station, the CCD camera, the calibration devices and the security devices. The computer receives orders from an operator who can be or not at the site of observation. The goal of this robotized observatory is the operation in a secure, autonomous and unattended way, with the purpose of to be used remotely by the students of the "Facultad de Ciencias Exactas, Físicas y Naturales" of the UNSJ. FULL TEXT IN SPANISH

Pogrebinsky, L.; Francile, C.

464

El Aula de la Ciencia de la UA celebra el Da Mundial del Medio Ambiente con una visita a las Salinas de Santa Pola  

E-print Network

Salinas de Santa Pola Alicante, 6 de junio de 2014 El Aula de la Ciencia de la Universidad de Alicante viaja este sábado al Parque Natural de las Salinas de Santa Pola para celebrar el Día Mundial del Medio

Escolano, Francisco

465

Actitudes hacia la prevención y promoción en salud en estudiantes de medicina de una universidad peruana. Attitudes toward prevention and health promotion in medical students  

Microsoft Academic Search

SUMMARY Objective: To determine attitudes toward prevention and health promotion in medical students. Material and Methods: Cross-sectional study. We evaluated 608 medical students from January to March 2001, through a survey validated previously, that evaluated students' attitudes toward prevention and health promotion, and demographics, educational and personals characteristics. Results: 45.4% of medical students reached suitable attitudes toward prevention and health

LLANOS ZAVALAGA; Luis Fernando; VELASQUEZ HURTADO; Jose Enrique; VENTOSILLA VILLANUEVA; REYES LECCA; Roberto Carlos

466

Bioconversión anaerobia como una alternativa para la remoción de DQO contenido en aguas residuales del rastro municipal de la Ciudad de Saltillo, Coahuila, México  

Microsoft Academic Search

Start-up of an UASB-hybrid reactor, packed with bauxite at the top, was made for treatment of slaugterhouse wastewater of Saltillo, México. The reactor temperature was controlled at 38 °C. Sludge adaptation was made for 10 days; continuous feeding was then began at organic load rates of 0.9 g COD \\/ L \\/ day. The pH va- lues fluctuated in the

Comunicación Técnica; Jesús Rodríguez; Gerardo J. Sosa; Yolanda Garza

2002-01-01

467

Trabajo, ergonomía y calidad de vida. Una aproximación conceptual e integradora. Work, Ergonomy and Quality of Life. An integrational and conceptual vision  

Microsoft Academic Search

Objective: Introduce the working enviroment, ergonomy and quality of life to an integrational reflection, from a vision of self-determination and selfpoietis in the complexity of the human being, allowing the appreciation and promotion of individual and colective health. Methodology: Theorical investigation, of critical and hermeneutic method. Employing techniques of bibliographical-documental analysis and revision. Discussion: the before mentioned focus, ratifies the

Joyce Esser Díaz; Nora Vásquez Antúnez; María Dolores Couto; Mariana Rojas

468

Efecto del metilfenidato sobre el sueño. Resultados de un estudio multicéntrico en una población infantil afecta de trastorno por déficit de atención e hiperactividad  

Microsoft Academic Search

IntroductionThe attention-deficit\\/hyperactivity disorder (ADHD) is the most common neuro-behavioural disorder in children and adolescents. Methylphenidate (MPH) is the drug most often used in the treatment of this disorder. It is important to know the effects methylphenidate can have on sleep due to the repercussions that insufficient sleep can have on the behaviour and cognitive function of children and adolescents.

M. Tomás Vila; M. Aleu Pérez-Gramunt; B. Beseler Soto; M. Benac Prefasi; J. Pantoja Martínez; I. Pitarch Castellano

2010-01-01

469

SISTEMA DE VISIÓN ARTIFICIAL PARA ASISTIR LA CONDUCCIÓN DE UNA SILLA DE RUEDAS ARTIFICIAL VISION SYSTEM TO GUIDE THE MOVEMENT OF A WHEEL CHAIR  

Microsoft Academic Search

This document is the development of an algorithm of detection of doors from images taken with one webcam, with the purpose of obtaining excellent data that it allows to guide a wheel chair whose object is the attendance in the conduction to incapacitated children

César Augusto; Peña Cortés

470

Mujeres indígenas, justicia y derechos: los retos de una justicia intercultural Indigenous women, justice and rights: challenges for an intercultural justice  

Microsoft Academic Search

Palabras claves: justicia indígena, género, derechos humanos, marcos culturales. Abstract: Community and indigenous forms of justice face not only racism and exclusion of state's jus- tice, but the challenges related with diversity acknowledge policies. The article presents two cases of indigenous justice in Mexico, which allow to examine the ways that gender and human rights demands clash with ideologies embeded

María Teresa Sierra

2008-01-01

471

MUTACIONES Y RECICLAJES DE LOS ROLES DE GÉNERO EN LATINOAMÉRICA ANTE LA CRISIS ECONÓMICA INTERNACIONAL Una mirada crítica desde la antropología cultural  

Microsoft Academic Search

La crisis económica y financiera internacional ha tenido diversos efectos sobre América Latina. Podemos suponer dos grandes escenarios: uno sombrío, poco alentador y carente de un futuro optimista y por otro, la traza de ciertas posibilidades o alternativas de vida, éstas últimas, a mi juicio, sólo partirán de las y los interesados, o sea, aquellas personas afectadas directa o indirectamente

Ángel Christian Luna Alfaro

2010-01-01

472

El software educativo en la escuela cubana: una propuesta metodológica para el desarrollo de habilidades en la resolución de problemas aritméticos. Estudio de caso  

Microsoft Academic Search

Integrar las tecnologías digitales en las aulas y centros educativos así como replantear y redefinir los contenidos del currículum parecen medidas urgentes. Llevarlo a cabo, entre otras medidas, implicará necesariamente realizar importantes inversiones económicas en dotación de recursos tecnológicos suficientes para los centros educativos y en la creación de redes telemáticas educativas; desarrollar estrategias de formación del profesorado y de

Enrique Medina Hernández

2011-01-01

473

Factores predictores de inicio y cesaci?n de tabaquismo en una cohorte de mujeres chilenas con 5,5 a?os de seguimiento  

PubMed Central

Background Chilean women have one of the highest smoking prevalence in the world. Aim To estimate the main factors associated with smoking initiation and quitting among a cohort of adult women living in a low socioeconomic status area of Santiago, Chile. Material and methods A random population-based sample of 1,100 women, 18 years and older, were selected from a community located in the South East area of Santiago. Sociodemographic, as well as smoking, beliefs, behaviors, stages of change and nicotine addiction level were recorded during a personal interview. After an average follow-up period of 5.5 years, women were re-evaluated. Results Seventy-three percent of women completed the study. At baseline, 39% of women were smokers. At the end of the study, there was an absolute smoking rate reduction of 7.1% (p<0.001). The main variables associated with smoking initiation were younger age (Odds ratio (OR): 1.08, 95% confidence intervals (CI): 1.05–1.12), higher education level (OR: 1.2, 95% CI: 1.07–1.35), and having fewer children (OR: 1.3 95% CI: 1.01–1.66). Factors related with quitting were younger age of onset (OR: 1.06 95% CI: 1.02–1.1), higher level of nicotine dependence (OR: 4.22, 95% CI: 1.74–10.27), and higher perception of smoking addiction (OR: 4.34, 95% CI: 2–9.09). Stage of change was associated with smoking cessation but its effect was diluted after adjusting for the level of nicotine addiction. Conclusions Sociodemographic and family factors were the main variables related with initiation, whereas age of onset, belief of addiction, and nicotine dependence were the main factors related with cessation. Women with a high motivation for quitting should be evaluated for nicotine addiction level to define the best strategy for intervention (Rev Méd Chile 2009; 137: 1001–9). PMID:19915762

Puschel, Klaus; Thompson, Beti; Olcay, Fabiola; Frreccio, Catterina

2014-01-01

474

Abundancia estacional y distribución vertical del zooplancton gelatinoso carnívoro en una área de surgencia en el norte del Sistema de la Corriente de Humboldt  

Microsoft Academic Search

-1 ) que se detectó en aguas muy someras (30-50 m) durante los eventos de surgencia. Palabras claves: zooplancton gelatinoso, abundancia estacional, distribución vertical, bahía de Mejillones, Chile. Seasonal abundance and vertical distribution of the carnivorous gelatinous zooplankton in an upwelling area of the northern Humboldt Current System ABSTRACT. The seasonal abundance and vertical distribution of gelatinous zooplankton collected during

Sergio Palma; Pedro Apablaza

2004-01-01

475

Arrecifes de Coral: Una Coleccion de Actividades en Espanol para Estudiantes de Escuela Intermedia (Coral Reefs: A Spanish Compilation of Activities for Middle School Students).  

ERIC Educational Resources Information Center

This activity book for middle school students on coral reefs is divided into 10 sections. Section 1 is the introduction. Section 2 describes what coral reefs are while section 3 describes how coral reefs reproduce and grow. Section 4 describes where coral reefs are found, and section 5 describes life on a coral reef. Section 6 describes the…

Walker, Sharon H.; Newton, R. Amanda; Ortiz, Alida

476

""Una Persona Derechita" (Staying Right in the Mind)": Perceptions of Spanish-Speaking Mexican American Older Adults in South Texas "Colonias"  

ERIC Educational Resources Information Center

Purpose: This study describes the perceptions of brain health among older Spanish-speaking Mexican Americans who reside in colonia areas of the Lower Rio Grande Valley of Texas. Design and Methods: In 2007, 33 Mexican American older adults (9 men and 24 women) were recruited by "promotoras" (community health workers) from clusters of "colonias" in…

Sharkey, Joseph R.; Sharf, Barbara F.; St. John, Julie A.

2009-01-01

477

Building Your Baby's Brain: A Parent's Guide to the First Five Years = Como estimular el cerebro infantil: Una guia para padres de familia.  

ERIC Educational Resources Information Center

Noting that all parents can help their baby's brain to grow, this guide, in English- and Spanish-language versions, explores what science has learned about infant brain development and how parents and caregivers can influence cognitive development. Topics covered include: prenatal care, touching your baby, teaching about feelings and self-control,…

Dodge, Diane Trister; Heroman, Cate

478

Informe Anual a la Nación sobre el Estado del Cáncer 1975-2002 con una sección especial sobre las tendencias de tratamiento: preguntas y respuestas  

Cancer.gov

Las organizaciones oncológicas principales de la nación informan que el riesgo de los estadounidenses de morir de cáncer sigue disminuyendo y que las tasas de casos nuevos de cáncer permanecen estables. El Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2002, señala que las tasas de mortalidad de cáncer que se observaron para todos los cánceres combinados disminuyeron 1,1 por ciento por año de 1993 a 2002.

479

El análisis de un estudio clínico indica que una combinación de fármacos puede ser de gran eficacia contra el cáncer de ovario recidivante  

Cancer.gov

El uso de un tratamiento farmacológico combinado para el cáncer de ovario recidivante mostró mejorías significativas, según se informó el día de hoy en el congreso anual de la Sociedad Americana de Oncología Clínica (ASCO). La combinación farmacológica se evaluó en un estudio de fase I y posteriormente en un estudio clínico aleatorizado de fase II patrocinado por el Instituto Nacional del Cáncer (NCI).

480

Realidades Suburbanas: Latinos en el Condado de Dakota. Una Investigacion Dirigida por HACER = Suburban Realities: Latinos in Dakota County. A Study Conducted by HACER.  

ERIC Educational Resources Information Center

A research project was conducted between April and December of 1998 to learn about the experiences of the sizable numbers of Latinos who live in Dakota County (Minnesota). This diverse group was studied through examining existing demographic information, conducting interviews with 45 Latino and Anglo individuals, and conducting several focus…

HACER: Hispanic Advocacy and Community Empowerment through Research, Minneapolis, MN.

481

La Red Regional Replad: Una Estrategia Innovadora para la Capacitacion de Administradores Educacionales (The Regional Network Replad: An Innovative Strategy for the Training and Preparation of Educational Administrators).  

ERIC Educational Resources Information Center

This document presents an overview, analysis, and historical assessment of the Major Project for Education in Latin America and the Caribbean. Conferences, regional meetings, and outcomes from the inception of the project in 1979 are described. This project stresses the establishment of a regional network for exchange of information, experiences,…

Jimenez Espinoza, Jorge

482

“Una Mujer Trabaja Doble Aquí”: Vignette-Based Focus Groups on Stress and Work for Latina Blue-Collar Women in Eastern North Carolina  

Microsoft Academic Search

Latina women are a growing percentage of the working population, and very little is known about their health needs and interests. The purpose of this article is to share qualitative research results gathered from Latina women with a particular focus on exploring stress and health. This project was a substudy of Health Works in the Community, a 5-year CDC-funded multiple

Michele M. Easter; Laura A. Linnan; Margaret E. Bentley; Brenda M. DeVellis; Andrea Meier; Pamela Y. Frasier; Kristine S. Kelsey; Marci K. Campbell

2007-01-01

483

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

Microsoft Academic Search

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

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

484

Contribucion de la Fonetica y la Fonologia a la Ensenanza de una Segunda Lengua (Phonetic and Phonological Contributions to Teaching a Second Language)  

ERIC Educational Resources Information Center

The historical changes in the teaching methods of modern languages are discussed, with emphasis on the modern principle that language, before anything, is a means of oral communication. (Text is in Spanish.) (NCR)

Cardenas, M. Cristina

1977-01-01

485

Gestión turística activa y desarrollo económico en los parques naturales andaluces. Una propuesta de revisión desde el análisis del posicionamiento de sus actuales gestores  

Microsoft Academic Search

RESUMEN Los cambios producidos en la demanda turística y la necesidad de los propios territorios de diversificar su estructura productiva, mejorando las oportunidades para la generación de empleo y de riqueza para la población rural, han convertido al turismo de naturaleza en un instrumento de primera magnitud para el desarrollo socioeconómico de la mayor parte de los parques naturales andaluces.

Juan Ignacio Pulido Fernández

2008-01-01

486

Committing to Vaccine R&D: A Global Science Policy Priority\\/Comprometerse en la investigación y desarrollo de vacunas: una prioridad de la política científica global  

Microsoft Academic Search

The amount of vaccine R&D performed, especially geared towards health issues affecting the developing world, is exceptionally undersized. Despite immunisation representing the most effective tool for achieving disease eradication, and the general consensus being optimistic about the development of a vaccine capable of fighting AIDS, Malaria and Tuberculosis, neither private nor public entities are investing sufficiently in the field. Reasons

DANIELE ARCHIBUGI; KIM BIZZARRI

2004-01-01

487

Una Vez en un Millón de Años: Como Enseñar el Tiempo Geológico  

NSDL National Science Digital Library

Helping students understand the magnitude of geologic time strengthens student understanding of biological concepts; illustrates not just when things happened but also how they are interconnected; and identifies and addresses common misperceptions.

Susan Lewis (Carroll University;); Kristen Lampe (Carroll University;); Andrew Lloyd (Carroll University;)

2009-10-05

488

Los movimientos islamistas en la Posguerra Fría. Una aproximación sociopolítica* Islamic movements in the post Cold-War era. A sociopolitical approach  

Microsoft Academic Search

This work centers on analyzing the phenomenon of Islamic movements in the post Cold-War era, and thus presents its historical background, the causes of Islamic resurgence, the impact the- reupon of the Iranian-Saudi rivalry, its action strategies at different global levels, the funda- mental characteristics of contemporary Islamic movements, as well as the impact of the end of the Cold

César Mejías

489

DISEÑO Y MANIPULACIÓN DE MODELOS OCULTOS DE MARKOV, UTILIZANDO HERRAMIENTAS HTK. UNA TUTORÍA DESIGN AND MANIPULATION OF HIDDEN MARKOV MODELS USING HTK TOOLS. A TUTORIAL  

Microsoft Academic Search

This paper presents HTK, a software development platform for the design and management of Hidden Markov Models. Nowadays, the Hidden Markov Models technique is the more effective one to implement voice recognition systems. HTK is mainly oriented to this application. Its architecture is robust and self-sufficient. It allows a natural input from a microphone, it has modules for A\\/D conversion,

Roberto Carrillo Aguilar

490

Teaching social studies in an age of globalization: A case study of secondary social studies teachers' participation in the UNA-USA's Global Classrooms curriculum program  

Microsoft Academic Search

The researcher found few studies that explore decisions of social studies teachers as they plan what and how to teach their classes. Over a century, social studies educators have adapted and responded to political, social, and economic changes. From educating immigrants a century earlier to addressing contemporary cross-border issues, social studies educators inherit unique challenges in today's increasingly globalized world.

Kelly R Miliziano

2009-01-01

491

Ayudando a Ninos Dotados a Volar: Una Guia Practica para Padres y Maestros (Helping Gifted Children Soar: A Practical Guide for Parents and Teachers).  

ERIC Educational Resources Information Center

Intended for parents of gifted children, this book, in Spanish, stresses the importance of positive relationships between parents and teachers as they work to meet children's academic, emotional, and social needs. Individual chapters address the following topics: (1) parenting the gifted child as a wild roller coaster ride; (2) determining whether…

Strip, Carol A.

492

Implementación de una Herramienta Didáctica para la Simulación de Redes IEEE 802.11b y g Orientada a Prácticas en el Laboratorio de Telecomunicaciones  

Microsoft Academic Search

This paper presents a didactical tool for university-level students about 802.11b & g wireless communication standards based on Network Simulator (NS2) and its graphic interface NAM. The main goal of this paper is to encourage them to know and learn these technologies and their main operation modes by means of laboratory practices which follow a pedagogical scheme carefully designed beginning

Luis Vásquez; Jerry Barona; Rosa Serpa; Hugo Torres

493

Changes in macromolecule syntheses under special consideration of UNA and the energy providing system in imbibing embryos of different aged agrostemma githago L. Seeds  

Microsoft Academic Search

Changes in macromolecule syntheses, especially RNA synthesis, and the energy providing system were investigated in seeds ofAgrostemma githago aged for different periods. In embryos of aged seeds all macromolecule syntheses start later and reach a lower level than\\u000a young ones. It was found that the synthesis of rRNA in embryos of aged seeds is reduced whereas the synthesis of poly

R. Kosanke; D. Bernhardt; K. H. KÖhler; Birgit Voigt

1990-01-01

494

Uso precoz de la ventilación mecánica no invasiva en pacientes con insuficiencia respiratoria hipercápnica aguda ingresados en una sala de neumología: estudio prospectivo  

Microsoft Academic Search

BackgroundIn recent years, the optimal location for noninvasive mechanical ventilation (NIMV) has been a matter of debate. Our aim was to detect the effectiveness of NIMV in acute hypercapnic respiratory failure (AHRF) in respiratory ward and factors associated with failure.

Aydin Ciledag; Akin Kaya; Buket Basa Akdogan; Pinar Akin Kabalak; Zeynep P. Onen; Elif Sen; Banu Gulbay

2010-01-01

495

Reseña de una experiencia de Promoción de la Salud y Lucha contra el Dengue utilizando el control biológico, en escuelas de Chacarita, Puntarenas, Costa Rica  

Microsoft Academic Search

Both dengue fever and malaria are endemic diseases in Chacarita, Puntarenas, Costa Rica. Vector mosquitoes thrive due to poor living conditions in highly populated areas where garbage, including empty containers, accumulate and, due to high humidity and precipitation, favor larval development. Spraying of insecticides and garbage collection during outbreaks have not been successful in preventing new ones. A different approach

Ana Cecilia; Cordero Conejo; Fernando Sandí Nogueral; Geoconda Mejías Fonseca; Ronal Antonio Silva Silva; María Victoria Campos Rodríquez; Lisbeth Soto; Leonel Angulo; Jorge Danilo García; Francisco Hernández Chavarría

496

INNOVACIÓN EDUCATIVA CUERPOS, MENTES Y APRENDIZAJES DIVERSOS: LA CLASE DE EDUCACIÓN FÍSICA COMO MODELO DE UNA EDUCACIÓN INCLUSIVA EN COSTA RICA  

Microsoft Academic Search

50 51 Resumen.- Abstract.- Con los procesos de integración educativa de los estudiantes con necesidades educativas especiales (NEE) asociadas o no a discapacidad y el concepto de educación inclusiva, hemos iniciado con un nuevo desafío educativo: educar en y para la diversidad. Dicha educación basada en el tema de los derechos humanos, en el respeto y acogida a las diferencias

Melania Monge

497

Colgajo CV y tatuaje: una alternativa para reconstrucción aréola pezón Nipple areeola reconstruction with c-v flap and tatoo. Experience in 18 patients  

Microsoft Academic Search

SUMMARY Background: The reconstruction of the nipple areola complex is the final complement to mammary reconstruction. Its objective is to give a natural look, giving a symmetrical aspect when compared with the opposite complex. Reconstruction techniques combine local flaps, grafting and tattoos. Material and Methods: Report of a series of 16 women who received 18 nipple areola complex reconstructions with

TRABAJOS CIENTÍFICOS

498

Evolución y mejores prácticas de la experiencia mexicana en el desarrollo de esquemas de asociaciones público privadas (APPs) con una aplicación al sector de hospitales  

Microsoft Academic Search

Presentación expuesta durante el Tercer Encuentro Técnico sobre la Estructuración de Proyectos de Asociación Público-Privada, llevado a cabo en Mérida, Yucatán, México, el 20, 21 y 22 de enero de 2010. El objetivo de esta presentación es analizar la experiencia mexicana en Asociaciones Público Privadas en el gobierno federal y cómo el país ha desarrollado esta práctica en el área

Gabriela Quesada Lastiri

2010-01-01

499

Es el mismo lugar, nada más hay una línea : transcending the boundary- children's construction of local belonging in the San Ysidro-Tijuana border region  

E-print Network

and social psychology emphasize the emotional dimension ofpsychology, border and transnational studies to discuss the significance of looking at children’s emotionalpsychology, border and transnational studies to discuss the significance of looking at children’s emotional

González, Silvia Nasheili

2012-01-01

500

Is Spanish time schedule really weird? // De verdad son tan an\\'omalos los horarios espa\\~noles? Una comparaci\\'on con Italia y Reino Unido  

E-print Network

There are currently a vivid debate in Spain on the time zone which should follow the country. In this context this paper analyses Time Use surveys in Spain, Italy and United Kingdom and compares data extracted from them. The paper focus on universal activities like: sleeping, eating, working and the location "at home". Data are analysed on the regional basis provided by the surveys. Regional distributions of first and last occurrences of the activities are described by median values. Median values are then compared to each other by considering longitude and latitude. Within the interval of half a time zone, data show a good agreement. Which is to say, Spanish time schedules are not really weird if geographical position is taken into account. That includes also latitude. It is shown that midlatitude regions may undergo earlier time tables in the morning. ---- En el contexto de la discusi\\'on actual que se vive en Espa\\~na sobre la pertinencia de sus horarios y sobre el huso horario que ha de regir en el pa\\'is...

Olalla, José María Martín

2014-01-01