Sample records for distancia entre plantas

  1. 24. Tama~nos y distancias celestes Matematicas II, 2012-II 24. Tama~nos y distancias celestes

    E-print Network

    Barot, Michael

    , Jupiter y Saturno en aquel entonces). El Sol, la Tierra, la Luna y los planetas los pensaban como esferas tama~no de la Tierra, de la Luna y del Sol y las distancias entre ellos. Los griegos no tuvieron a su Tierra y Luna Los griegos pod´ian comparar el di´ametro de la Tierra DL con el di´ametro de la Tierra DT

  2. Deteccion facial basada en una distancia de Hausdorff normalizada

    E-print Network

    Escolano, Francisco

    ´etodos m´as robustos. En un sistema de detecci´on basado en ajuste de modelos, se predefine un patr, Alicante pablo@dccia.ua.es, fpujol@dtic.ua.es, rizo@dccia.ua.es, mar@dccia.ua.es Abstract. Los sistemas de diversas apli- caciones biom´etricas. En este tipo de sistemas, la distancia de Hausdorff es una m

  3. Programa de Formacin de Docentes en Educacin a Distancia

    E-print Network

    Vásquez, Carlos

    la gestión de aquellos procesos académicos y administrativos propios de la Educación a Distancia conocimientos que contribuyen al fortalecimiento del proceso instruccional (diseño, producción y evaluación de Competencias socio-afectivas y psicológicas: Comprenden conocimientos relacionados con la promoción de procesos

  4. PREJUICIO Y DISTANCIA SOCIAL HACIA PERSONAS HOMOSEXUALES POR PARTE DE JÓVENES UNIVERSITARIOS

    PubMed Central

    Fernández Rodríguez, María del C.; Squiabro, José Calderón

    2014-01-01

    Se realizó un estudio descriptivo transversal con el propósito de explorar actitudes de rechazo y distancia social hacia las personas gays y lesbianas (GL) en 565 universitarios. Se utilizó una escala para medir Prejuicio y otra escala para medir Distancia Social. Los participantes reflejaron niveles moderados de prejuicio y distancia social (DS) hacia las personas gays y lesbianas. Los varones (M=104.5, DT= 27.47) mostraron significativamente más prejuicio que las mujeres (M=98.8, DT= 23.41). Los hombres (M=22.7, DT= 7.00) mostraron significativamente mayor DS que las mujeres (M=21.1, DT= 5.41). Las personas que asisten con regularidad a la iglesia mostraron más prejuicio y DS que los que no asisten. Se analiza importancia de incluir el tema de la diversidad sexual a través del currículo para desmontar prejuicios hacia la comunidad homosexual. PMID:25606066

  5. Costa Rica's Universidad Estatal a Distancia: A Case Study. DERG Papers, Number 4.

    ERIC Educational Resources Information Center

    Rumble, Greville

    Costa Rica's Universidad Estatal a Distancia (UNED), the education system in the country, and information on Costa Rica are considered. UNED is helping to equalize geographical inequalities of access to higher education. Overall, UNED's academic programs have been aimed at those who want to obtain professional qualifications. In the first semester…

  6. UN ENFOQUE CONSTRUCTIVISTA PARA USO DE MAPAS CONCEPTUALES EN EDUCACIÓN A DISTANCIA DE PROFESORES

    Microsoft Academic Search

    Lea Fagundes; Alberto J. Cañas

    Resumen. Este trabajo presenta una propuesta de utilización de los mapas conceptuales en la formación de profesores a distancia usando el software CmapTools del Institute for Human and Machine Cognition, dentro de un paradigma constructivista. Nuestra propuesta utiliza como base teórica la Epistemología Genética de Jean Piaget y, en especial, la teoría de las Implicaciones Significantes para la construcción de

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

    E-print Network

    Quirk, Gregory J.

    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

  8. Non-random sharing of Plantae genes.

    PubMed

    Chan, Cheong Xin; Bhattacharya, Debashish

    2011-05-01

    The power of eukaryote genomics relies strongly on taxon sampling. This point was underlined in a recent analysis of red algal genome evolution in which we tested the Plantae hypothesis that posits the monophyly of red, green (including plants) and glaucophyte algae. The inclusion of novel genome data from two mesophilic red algae enabled us to robustly demonstrate the sisterhood of red and green algae in the tree of life. Perhaps more exciting was the finding that >1,800 putative genes in the unicellular red alga Porphyridium cruentum showed evidence of gene-sharing with diverse lineages of eukaryotes and prokaryotes. Here we assessed the correlation between the putative functions of these shared genes and their susceptibility to transfer. It turns out that genes involved in complex interactive networks such as biological regulation and transcription/translation are less susceptible to endosymbiotic or horizontal gene transfer, when compared to genes with metabolic and transporter functions. PMID:21980581

  9. Qu es el Sistema Universidad Abierta y Educacin a Distancia (SUAyED)? En su origen, el Sistema Universidad Abierta se concibi como parte integral del proyecto de Reforma Universitaria impulsada por el

    E-print Network

    Islas, León

    ¿Qué es el Sistema Universidad Abierta y Educación a Distancia (SUAyED)? En su origen, el Sistema e innovadora en sus metodologías de enseñanza y evaluación de los conocimientos, con criterios de calidad y normados por un Estatuto aprobado por el Consejo Universitario el 25 de febrero de 1972, y por

  10. In planta functions of the Arabidopsis cytokinin receptor family

    Microsoft Academic Search

    Masayuki Higuchi; Melissa S. Pischke; Ari Pekka Mähönen; Kaori Miyawaki; Yukari Hashimoto; Motoaki Seki; Masatomo Kobayashi; Kazuo Shinozaki; Tomohiko Kato; Satoshi Tabata; Ykä Helariutta; Michael R. Sussman; Tatsuo Kakimoto

    2004-01-01

    Since their discovery as cell-division factors in plant tissue culture about five decades ago, cytokinins have been hypothesized to play a central role in the regulation of cell division and differentiation in plants. To test this hypothesis in planta, we isolated Arabidopsis plants lacking one, two, or three of the genes encoding a subfamily of histidine kinases (CRE1, AHK2, and

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

    Microsoft Academic Search

    Eduardo A. González Valenzuela; Mark A. Hussey

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

  12. Capacidad reproductiva de Pinus nigra subsp. salzmannii en relacin con la edad de la planta madre

    E-print Network

    Herrera, Carlos M.

    Capacidad reproductiva de Pinus nigra subsp. salzmannii en relación con la edad de la planta madre fertilidad del pino salgareño (Pinus nigra subsp. salzmannii) conforme los árboles envejecen. La fertilidad bosques de montaña del sur de Europa. Palabras clave: Pinus nigra, fertilidad, senescencia de las plantas

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

    Technology Transfer Automated Retrieval System (TEKTRAN)

    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 ch...

  14. Bases morfofisiológicas para maior tolerância dos híbridos modernos de milho a altas densidades de plantas

    Microsoft Academic Search

    Luís Sangoi; Milton Luiz de Almeida; Paulo Regis Ferreira da Silva; Gilber Argenta

    2002-01-01

    RESUMO O lançamento de híbridos de milho tolerantes ao aumento da densidade de plantas contribuiu para o incremento do potencial produtivo da cultura na segunda metade do século XX. Objetiva-se com esta revisão de literatura discutir características morfológicas, fisiológicas, fenológicas e alométricas que contribuíram para maior adaptação do milho a elevadas densidades de plantas. Os processos de seleção utilizados pelos

  15. Collections and Exsiccates deposited in PRC herbarium Prague: Plantae Scandinaviae ex herb. G. V. Schotte

    E-print Network

    Svoboda, David

    Collections and Exsiccates deposited in PRC herbarium Prague: Plantae Scandinaviae ex herb. G. V Kosteletzky (incl. herb. Mann, Opiz p.p.) Flora exsiccata Austro-Hungarica Flora Hungarica exsiccata Caliciae

  16. RETOURS SUR LES LIENS ENTRE SCIENCES SOCIALES

    E-print Network

    Paris-Sud XI, Université de

    ÉTUDES RETOURS SUR LES LIENS ENTRE SCIENCES SOCIALES ET LITTÉRATUR par Pierre LASSA VE RÉSUMÉ ambivalents entre la fiction romanesque et les sciences sociales. L'analyse de la genèse et de la to the investigation ort convergent, divergent or ambivalent links between fiction and social sciences. As a matter

  17. Entre nostalgie et prospective, le temps prsent

    E-print Network

    Boyer, Edmond

    Entre nostalgie et prospective, le temps présent Colette Pétonnet Références de publication : 1989 pelouse qui a sévi dans les banlieues, au profil de jardin, planté, rythmé, et miniaturisé. #12;Colette a contrario nos archaïsmes, telle #12;Colette Pétonnet (1989) Entre nostalgie et prospective... 3/8 la

  18. Astronomy at School: Measurements of the Earth-Moon Distance. (Spanish Title: Astronomía en la Escuela: Medición de la Distancia Tierra-Luna.) Astronomia na Escola: Medida da Distância Terra-Lua

    NASA Astrophysics Data System (ADS)

    Paolantonio, Santiago; Pintado, Olga I.

    2006-12-01

    The aim of this project is to approach High School students to Science. We propose to measure the Earth-Moon distance using the parallax. The observation and measurements techniques and all the calculations needed are described in this paper. The results obtained in a test experience realized during 2003 are presented. This test shows that this is a feasible project and also shows which things needed to be improved. Se plantea la propuesta de un proyecto educativo dirigido al Nivel Medio de enseñanza, consistente en la determinación de la distancia Tierra – Luna por paralaje. Se describen las técnicas de observación, mediciones y cálculos. Se proporcionan a continuación los resultados obtenidos en la experiencia piloto realizada en el 2003, la que permitió comprobar la factibilidad de llevar a cabo la propuesta, así como perfeccionar los diferentes aspectos involucrados en la misma. Propomos neste trabalho um projeto educativo dirigido ao Ensino Médio que consiste na determinação da distância Terra-Lua pelo efeito da paralaxe. As técnicas de observação, medidas e cálculos auxiliares são descritos, e os resultados obtidos numa experiência-teste realizada no ano de 2003 apresentados. Este último teste permitiu comprovar a viabilidade de execução da proposta e aperfeiçoar diversos aspectos da mesma.

  19. Cadeia alimentar "MODELO" montada pelo professor: Planta => Lagarta => Pssaro => Gato (Mimi) => Gato (Mimi) morto em

    E-print Network

    Morandini, Andre C.

    ) => Gato (Mimi) morto em decomposição. Figura 1: Foto do produtor utilizado no modelo do professor (planta feita com retalhos de tecido) Figura 2: Foto do consumidor primário usado no modelo do professor). #12;Figura 3: Foto do consumidor secundário usado no modelo do professor (pássaro feito som retalhos

  20. Planta (2007) 225:12211231 DOI 10.1007/s00425-006-0432-8

    E-print Network

    2007-01-01

    pollen development. Keywords MAP kinase kinase kinase · Anther · Pollen · Solanum chacoense GenbankPlanta (2007) 225:1221­1231 DOI 10.1007/s00425-006-0432-8 123 ORIGINAL PAPER The ScFRK2 MAP kinase kinase kinase from Solanum chacoense aVects pollen development and viability Martin O'Brien · Madoka Gray

  1. Phylogenetic Relationship of the Kingdoms Animalia, Plantae, and Fungi, Inferred from 23 Different Protein Species

    Microsoft Academic Search

    Naruo Nikoh; Nobuyoshi Hayase; Naoyuki Iwabe; Kei-ichi Kuma; Takashi Miyata

    The phylogenetic relationship among the kingdoms Animalia, Plantae, and Fungi remains uncertain, because of lack of solid fossil evidence. In spite of the extensive molecular phylogenetic analyses since the early report, this problem is a longstanding controversy; the proposed phylogenetic relationships differ for different authors, depending on the molecules and methods that they use. To settle this problem, we have

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

    E-print Network

    Kronzucker, Herbert J.

    1995-01-01

    November 1994 Abstract. Using 13NH,~ as a tracer, compartmental ana- lyses for NH~- were performed in non - Compartmental analysis - Ni- trogen-13 - Picea Abbreviations and symbol: [NH+]cyt = cytoplasmic NH,~ concenPlanta (1995)196:691-698 P l a n t ~ 9 Springer-Verlag 1995 Compartmentation and flux

  3. Crassulacean Acid Metabolism: a Cause or Consequence of Oxidative Stress in Planta?

    Microsoft Academic Search

    Ewa Niewiadomska; Anne M. Borland

    The photosynthetic specialization of crassulacean acid metabolism (CAM) is typically found in plants growing in environments\\u000a where water and\\/or CO2 is limiting and, by analogy, where irradiance and daytime temperatures may be high. Such abiotic actors are known to lead\\u000a to the generation of reactive oxygen species (ROS) in planta which can elicit potentially damaging oxidative stress and\\/or\\u000a act as

  4. Development of an in planta method for transformation of alfalfa ( Medicago sativa )

    Microsoft Academic Search

    Jingsong Ye; Caius M. Rommens

    2008-01-01

    Conventional methods in transforming alfalfa (Medicago sativa) require multiple tissue culture manipulations that are time-consuming and expensive, while applicable only to a few highly\\u000a regenerable genotypes. Here, we describe a simple in planta method that makes it possible to transform a commercial variety without employing selectable marker genes. Basically, young\\u000a seedlings are cut at the apical node, cold-treated, and vigorously

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

    Microsoft Academic Search

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

    2010-01-01

    Production of stable transgenic plants is one factor that limits rapid evaluation of tissue specific transgene expression.\\u000a To hasten the assessment of transgenes in planta, we evaluated the use of chimeric soybean seedlings expressing transgenic\\u000a products in roots. Tap roots from four-day old seedlings (cultivars ‘Jack’ and KS4704) were excised and hairy roots were induced\\u000a from hypocotyls via Agrobacterium rhizogenes-mediated

  6. A quantitative PCR assay for accurate in planta quantification of the necrotrophic pathogen Phytophthora cinnamomi

    Microsoft Academic Search

    Leila Eshraghi; Nader Aryamanesh; Jonathan P. Anderson; Bryan Shearer; Jen A. McComb; Giles E. St. J. Hardy; Philip A. O’Brien

    A reliable method for measuring disease progression is important when evaluating susceptibility in host—pathogen interactions.\\u000a We describe a sensitive quantitative polymerase chain reaction (QPCR) assay that enables quantitative measurement of in planta DNA of the necrotrophic pathogen, Phytophthora cinnamomi, that avoids problems caused by variation in DNA extraction efficiency and degradation of host DNA during host tissue necrosis.\\u000a Normalization of

  7. Article original Entre neurosciences et neurophilosophie

    E-print Network

    Dominey, Peter F.

    essential to clearly situ- ate its contribution to the origin and the development of the cognitive sciencesArticle original Entre neurosciences et neurophilosophie : la psychologie cognitive et les sciences cognitives Between neuroscience and neurophilosophy: cognitive psychology and cognitive science G. Tiberghien

  8. i Planta

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This application was designed for farmers, agriculture researchers, and gardeners. The application includes a calculator, a data logger, and a GPS mapping function. It was designed for vegetable farming but can be used for open field applications. The calculator solves for the amount of pesticide,...

  9. Highly Efficient Agrobacterium-Mediated Transformation of Wheat Via In Planta Inoculation

    NASA Astrophysics Data System (ADS)

    Risacher, Thierry; Craze, Melanie; Bowden, Sarah; Paul, Wyatt; Barsby, Tina

    This chapter details a reproducible method for the transformation of spring wheat using Agrobacterium tumefaciens via the direct inoculation of bacteria into immature seeds in planta as described in patent WO 00/63398(1. Transformation efficiencies from 1 to 30% have been obtained and average efficiencies of at least 5% are routinely achieved. Regenerated plants are phenotypically normal with 30-50% of transformation events carrying introduced genes at single insertion sites, a higher rate than is typically reported for transgenic plants produced using biolistic transformation methods.

  10. Comparative analysis of the in vitro and in planta secretomes from Mycosphaerella fijiensis isolates.

    PubMed

    Escobar-Tovar, Lina; Guzmán-Quesada, Mauricio; Sandoval-Fernández, Jorge A; Gómez-Lim, Miguel A

    2015-06-01

    Black Sigatoka, a devastating disease of bananas and plantains worldwide, is caused by the fungus Mycosphaerella fijiensis. Several banana cultivars such as 'Yangambi Km 5' and Calcutta IV, have been known to be resistant to the fungus, but the resistance has been broken in 'Yangambi Km 5' in Costa Rica. Since the resistance of this variety still persists in Mexico, the aim of this study was to compare the in vitro and in planta secretomes from two avirulent and virulent M. fijiensis isolates using proteomics and bioinformatics approaches. We aimed to identify differentially expressed proteins in fungal isolates that differ in pathogenicity and that might be responsible for breaking the resistance in 'Yangambi Km 5'. We were able to identify 90 protein spots in the secretomes of fungal isolates encoding 42 unique proteins and 35 differential spots between them. Proteins involved in carbohydrate transport and metabolism were more prevalent. Several proteases, pathogenicity-related, ROS detoxification and unknown proteins were also highly or specifically expressed by the virulent isolate in vitro or during in planta infection. An unknown protein representing a virulence factor candidate was also identified. These results demonstrated that the secretome reflects major differences between both M. fijiensis isolates. PMID:25986542

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

    PubMed Central

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

    2009-01-01

    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

  12. La conflictiva relación entre la satisfacción y el ingreso

    Microsoft Academic Search

    Eduardo Lora; Juan Camilo Chaparro

    2008-01-01

    Este trabajo hace uso de la Encuesta Mundial de Gallup de 2006, que contiene opiniones sobre satisfacción con diversos aspectos de la vida en 130 países. Aunque la relación entre satisfacción e ingreso que se encuentra es muy sólida (tanto entre países como entre individuos en los países), arrojando dudas sobre la conocida paradoja de Easterlin, surge una nueva paradoja:

  13. Chromista is a major eukaryotic kingdom comprising algae and former protozoa that is evolutionarily entirely distinct from the kingdoms Plantae and Protozoa (Cavalier-Smith 2007). Chromist chloroplasts

    E-print Network

    Goldschmidt, Christina

    that is evolutionarily entirely distinct from the kingdoms Plantae and Protozoa (Cavalier-Smith 2007). Chromist chloroplasts were acquired secondarily by enslavement of a red alga, itself a member of kingdom Plantae 1 Chromista is a major eukaryotic kingdom comprising algae and former protozoa

  14. In Planta Microsphere-Based Lateral Flow Leaf Biosensor in Maize.

    PubMed

    Wen, Jessica T; Castro, Carlos; Tsutsui, Hideaki

    2015-08-01

    Low-cost and quick detection of biotic stresses is critically important for protection of staple food crops such as maize in smallholder farms in developing countries, where access to improved seed varieties, fertilizers, and pesticides is limited due to financial and geographical reasons. Here, we report a new lateral flow detection technology directly integrated in a maize leaf, in which microspheres conjugated with analyte-specific capture antibodies are non-invasively injected. The antibody-conjugated microspheres capture and detect an analyte in a concentration-specific manner. In this study, we optimized microsphere size for effective infiltration and immobilization in the leaf, and further demonstrated detection of a fluorescent mock biomarker, fluorescein, in a live maize plant. This in planta lateral flow biosensor is the first of its kind and is expected to provide a low-cost and user-friendly detection method for biotic stresses in the field. PMID:25271045

  15. In planta transformation method for T-DNA transfer in orchids

    NASA Astrophysics Data System (ADS)

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

    2014-03-01

    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.

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

    Microsoft Academic Search

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

    2008-01-01

    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

  17. Single, Ancient Origin of a Plastid Metabolite Translocator Family in Plantae from an Endomembrane-Derived Ancestor

    Microsoft Academic Search

    Andreas P. M. Weber; Marc Linka; Debashish Bhattacharya

    2006-01-01

    The photosynthetic organelle (plastid) in red, green, and glaucophyte algae (Plantae) likely had a single origin from a cyanobacterial endosymbiosis (8, 17). This ancient (ca. 1 to 1.5 billion years ago) (10, 24) event was followed by the transfer of genetic material from the endosymbiont to the nuclear genome of the host, the evolution of a protein import apparatus for

  18. Bacterial evolution by genomic island transfer occurs via DNA transformation in planta.

    PubMed

    Lovell, Helen C; Mansfield, John W; Godfrey, Scott A C; Jackson, Robert W; Hancock, John T; Arnold, Dawn L

    2009-09-29

    Our understanding of the evolution of microbial pathogens has been advanced by the discovery of "islands" of DNA that differ from core genomes and contain determinants of virulence. The acquisition of genomic islands (GIs) by horizontal gene transfer (HGT) is thought to have played a major role in microbial evolution. There are, however, few practical demonstrations of the acquisition of genes that control virulence, and, significantly, all have been achieved outside the animal or plant host. Loss of a GI from the bean pathogen Pseudomonas syringae pv. phaseolicola (Pph) is driven by exposure to the stress imposed by the plant's resistance response. Here, we show that the complete episomal island, which carries pathogenicity genes including the effector avrPphB, transfers between strains of Pph by transformation in planta and inserts at a specific att site in the genome of the recipient. Our results show that the evolution of bacterial pathogens by HGT may be achieved via transformation, the simplest mechanism of DNA exchange. This process is activated by exposure to plant defenses, when the pathogen is in greatest need of acquiring new genetic traits to alleviate the antimicrobial stress imposed by plant innate immunity. PMID:19747826

  19. Detection and Visualization of an Exopolysaccharide Produced by Xylella fastidiosa In Vitro and In Planta?

    PubMed Central

    Roper, M. Caroline; Greve, L. Carl; Labavitch, John M.; Kirkpatrick, Bruce C.

    2007-01-01

    Many phytopathogenic bacteria, such as Ralstonia solanacearum, Pantoea stewartii, and Xanthomonas campestris, produce exopolysaccharides (EPSs) that aid in virulence, colonization, and survival. EPS can also contribute to host xylem vessel blockage. The genome of Xylella fastidiosa, the causal agent of Pierce's disease (PD) of grapevine, contains an operon that is strikingly similar to the X. campestris gum operon, which is responsible for the production of xanthan gum. Based on this information, it has been hypothesized that X. fastidiosa is capable of producing an EPS similar in structure and composition to xanthan gum but lacking the terminal mannose residue. In this study, we raised polyclonal antibodies against a modified xanthan gum polymer similar to the predicted X. fastidiosa EPS polymer. We used enzyme-linked immunosorbent assay to quantify production of EPS from X. fastidiosa cells grown in vitro and immunolocalization microscopy to examine the distribution of X. fastidiosa EPS in biofilms formed in vitro and in planta and assessed the contribution of X. fastidiosa EPS to the vascular occlusions seen in PD-infected grapevines. PMID:17827325

  20. Detection and visualization of an exopolysaccharide produced by Xylella fastidiosa in vitro and in planta.

    PubMed

    Roper, M Caroline; Greve, L Carl; Labavitch, John M; Kirkpatrick, Bruce C

    2007-11-01

    Many phytopathogenic bacteria, such as Ralstonia solanacearum, Pantoea stewartii, and Xanthomonas campestris, produce exopolysaccharides (EPSs) that aid in virulence, colonization, and survival. EPS can also contribute to host xylem vessel blockage. The genome of Xylella fastidiosa, the causal agent of Pierce's disease (PD) of grapevine, contains an operon that is strikingly similar to the X. campestris gum operon, which is responsible for the production of xanthan gum. Based on this information, it has been hypothesized that X. fastidiosa is capable of producing an EPS similar in structure and composition to xanthan gum but lacking the terminal mannose residue. In this study, we raised polyclonal antibodies against a modified xanthan gum polymer similar to the predicted X. fastidiosa EPS polymer. We used enzyme-linked immunosorbent assay to quantify production of EPS from X. fastidiosa cells grown in vitro and immunolocalization microscopy to examine the distribution of X. fastidiosa EPS in biofilms formed in vitro and in planta and assessed the contribution of X. fastidiosa EPS to the vascular occlusions seen in PD-infected grapevines. PMID:17827325

  1. Advances in alfalfa mosaic virus-mediated expression of anthrax antigen in planta

    SciTech Connect

    Brodzik, R. [Biotechnology Foundation Laboratories, Thomas Jefferson University, Philadelphia, PA 19107 (United States); Bandurska, K. [Biotechnology Foundation Laboratories, Thomas Jefferson University, Philadelphia, PA 19107 (United States); Deka, D. [Biotechnology Foundation Laboratories, Thomas Jefferson University, Philadelphia, PA 19107 (United States); Golovkin, M. [Biotechnology Foundation Laboratories, Thomas Jefferson University, Philadelphia, PA 19107 (United States); Koprowski, H. [Biotechnology Foundation Laboratories, Thomas Jefferson University, Philadelphia, PA 19107 (United States)]. E-mail: h_koprowski@jefferson.edu

    2005-12-16

    Plant viruses show great potential for production of pharmaceuticals in plants. Such viruses can harbor a small antigenic peptide(s) as a part of their coat proteins (CP) and elicit an antigen-specific immune response. Here, we report the high yield and consistency in production of recombinant alfalfa mosaic virus (AlMV) particles for specific presentation of the small loop 15 amino acid epitope from domain-4 of the Bacillus anthracis protective antigen (PA-D4s). The epitope was inserted immediately after the first 25 N-terminal amino acids of AlMV CP to retain genome activation and binding of CP to viral RNAs. Recombinant AlMV particles were efficiently produced in tobacco, easily purified for immunological analysis, and exhibited extended stability and systemic proliferation in planta. Intraperitional injections of mice with recombinant plant virus particles harboring the PA-D4s epitope elicited a distinct immune response. Western blotting and ELISA analysis showed that sera from immunized mice recognized both native PA antigen and the AlMV CP.

  2. Root internalization, transport and in-planta survival of Salmonella enterica serovar Newport in sweet basil.

    PubMed

    Gorbatsevich, Elena; Sela Saldinger, Shlomo; Pinto, Riky; Bernstein, Nirit

    2013-02-01

    It is now acknowledged that food-borne pathogens present in the irrigation water or soil can become associated with crop plants in the field, penetrate internal plant tissues via the root, translocate and survive inside plants. Only little information is available concerning interaction between enteric pathogens and plants. The present study evaluated the potential for contamination of the aromatic plant, sweet basil during cultivation, by Salmonella enterica serovar Newport. Root internalization was plant-age-dependent, with the highest susceptibility occurring at the beginning of the rapid growth phase of the root. Higher incidence of internalization was detected in vegetative than reproductive plant organs, pointing at bacterial transport in the transpiration stream. Internalized Salmonella survived only planta survival was limited to less than 30?h. These findings imply that leaf surface contamination, rather than root internalization, may pose higher risk for human infection following consumption of contaminated basil. PMID:23757144

  3. Les blogs BD : entre blogs et bandes dessines Sbastien Rouquette, Les blogs BD : entre blogs et bandes

    E-print Network

    Paris-Sud XI, Université de

    1 Les blogs BD : entre blogs et bandes dessinées Sébastien Rouquette, « Les blogs BD : entre blogs phénomène des blogs BD a connu en France une reconnaissance institutionnelle, puis médiatique, rapide ; d'abord avec la création d'un festival entièrement consacré aux blogs BD qui a réuni des milliers de personnes

  4. In planta side-chain glucosinolate modification in Arabidopsis by introduction of dioxygenase Brassica homolog BoGSL-ALK

    Microsoft Academic Search

    G. Li; C. F. Quiros

    2003-01-01

    Aliphatic glucosinolates and their derived isothiocyanates are important secondary metabolites in crucifers. Some of these compounds have beneficial activities such as carcinogen detoxification, pesticidal and antifungal properties, but others are anti-nutritional; the differences are largely due to side chain modifications. We report the cloning and in planta functionality analysis of BoGSL-ALK, a gene whose protein product influences side-chain modifications in

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

    PubMed Central

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

    2010-01-01

    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

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

    PubMed

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

    2014-01-01

    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

  7. Parler en famille : les échanges entre parents et enfants

    Microsoft Academic Search

    Olivier Galland

    1997-01-01

    [fre] Parler en famille : les échanges entre parents et enfants . L'étendue des sujets abordés par les discussions entre parents et enfants parvenus à l'âge adulte est un indicateur de l'intensité de leurs rapports. Il montre que davantage que l'âge, l'installation en couple tend à amenuiser ces liens : une rupture plus nette se manifeste chez les jeunes femmes,

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

    PubMed Central

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

    2012-01-01

    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

  9. Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y representaciones de la

    E-print Network

    Islas, León

    Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y de Graduados (CIG): "Entre espacios, movimientos, actores y representaciones de la globalización". El centros participantes del Colegio Internacional de Graduados (CIG) "Entre espacios": · Centro de

  10. Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y representaciones de la

    E-print Network

    Islas, León

    Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y de Graduados (CIG): "Entre espacios, movimientos, actores y representaciones de la globalización" El (CIG) "Entre espacios": · Centro de Investigaciones y Estudios Superiores en Antropología Social: todos

  11. Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y representaciones de la

    E-print Network

    Islas, León

    Convocatoria del Colegio Internacional de Graduados: "Entre espacios, movimientos, actores y de Graduados (CIG): "Entre espacios, movimientos, actores y representaciones de la globalización" El, programas y centros participantes del Colegio Internacional de Graduados "Entre espacios": · Centro de

  12. Les temps partiels : entre emplois choisis et emplois \\

    Microsoft Academic Search

    Bénédicte Galtier

    1999-01-01

    [fre] Les temps partiels : entre emplois choisis Les emplois à temps partiel correspondent à des situations individuelles bien différentes les unes des autres. À côté des femmes à temps partiel « scolaire », il y a toutes celles qui occupent des emplois, traditionnellement dévolus aux femmes et aux horaires courts, comme vendeuses ou femmes de ménage. Il y a

  13. ENTR 335: Financing New Ventures Syllabus Fall, 2013

    E-print Network

    Young, Paul Thomas

    ENTR 335: Financing New Ventures Syllabus ­ Fall, 2013 Class meets: MW: 2:00-3:15; ECTR 112. Also covered are the two most common forms of equity investment: angel capital and venture capital S. and John Kador (2013), What Every Angel Investor Wants You To Know, McGraw Hill, ISBN: 978

  14. A relação entre altura, escolaridade, ocupação e salários no Brasil

    Microsoft Academic Search

    Naércio Aquino Menezes-Filho; Andréa Zaitune Curi

    2008-01-01

    Resumo Neste artigo analisamos os efeitos da altura, utilizada como proxy para as condições sócio- econômicas, demográficas, de saúde e dos ambientes físico e social vivenciadas por uma pessoa, sobre a escolaridade e os salários no Brasil, utilizando dados da PPV e da POF. Examinamos a influência da altura na conclusão dos ciclos escolares, na alocação entre as ocupações e

  15. Article original Relations entre les teneurs en bio-lments

    E-print Network

    Paris-Sud XI, Université de

    Article original Relations entre les teneurs en bio-éléments chez divers végétaux méditerranéens teneurs des principaux bio-éléments (C, N, Ca, P, K), contenus dans les feuilles de quelques espèces milieux différents peuvent avoir des concentrations en bio-éléments identiques. bio-éléments / types

  16. O casamento entre pessoas do mesmo sexo. Sobre \\

    Microsoft Academic Search

    MIGUEL VALE DE ALMEIDA

    2006-01-01

    O artigo constitui uma primeira reflexão sobre dados de uma pesquisa realizada em Barcelona. O debate público sobre o casamento entre pessoas do mesmo sexo revela as tensões sociais em torno do género, da sexualidade, da conjugalidade, da procriação e da parentalidade. As representações simbólicas e os discursos ideológicos sobre estes campos vêem revelado o seu carácter construído no momento

  17. Les Tableaux de bord stratgiques entre conception et action : propos

    E-print Network

    Boyer, Edmond

    autour de quatre axes principaux que sont l'axe financier, l'axe clients, l'axe processus internes et enfin l'axe apprentissage et innovation. Une des hypothèses principales est qu'il existe des interdépendances entre chacun des axes ce qui conduit à la construction de cartes stratégiques (Kaplan et Norton

  18. Passerelles entre les arts. Anas Rolez La sculpture sonore.

    E-print Network

    Paris-Sud XI, Université de

    Passerelles entre les arts. Anaïs Rolez ­ La sculpture sonore. L'étude la sculpture sonore découle artistiques en arts de la vue ou arts de l'espace (architecture, sculpture, peinture), arts de l'ouïe ou arts Tinguely indiquent l'avancé artistique également dans cette direction), les sculptures ne le sont plus

  19. Les classificateurs mayas : un terrain exprimental entre langue et cognition

    E-print Network

    Boyer, Edmond

    275 Les classificateurs mayas : un terrain expérimental entre langue et cognition Colette GRINEVALD langues mayas d'Amérique Centrale qui ont déjà fait l'objet de nombreuses études par le groupe de-clés : catégorisation · classification nominale (ou classificateurs) · objets inanimés · langues mayas · travail de

  20. Allocataires du RSA, entre retour au travail et stratgies alternatives.

    E-print Network

    Paris-Sud XI, Université de

    1 Allocataires du RSA, entre retour au travail et stratégies alternatives. De l'émancipation face à allocataires du RSA en Isère. Notre première hypothèse concerne la mauvaise qualité des trajectoires de retour qui en découle. Dans un second temps, nous pourrons étudier le RSA au prisme de cette dynamique

  1. Interaction augment entre un chien et Germain Lemasson

    E-print Network

    Boyer, Edmond

    Interaction augmenté entre un chien et son maître Germain Lemasson UMR 6285 ­ Lab-STICC, Université de Bretagne Sud, France Introduction Le chien est l'ami de l'homme depuis 14000 ans [1]. L'homme a rapidement su reconnaitre les capacités du chien et l'a entrainé afin qu'il l'aide dans son travail. Les

  2. Controle de qualidade de produtos à base de plantas medicinais comercializados na cidade do Recife-PE: erva-doce (Pimpinella anisum L.), quebra-pedra (Phyllanthus spp.), espinheira santa (Maytenus ilicifolia Mart.) e camomila (Matricaria recutita L.) 1

    Microsoft Academic Search

    V. T. Nascimento; E. U. Lacerda; J. G. Melo; E. L. C. Amorim

    RESUMO: As plantas têm sido bastante utilizadas para a cura de doenças e por isso, a cada dia, mais fitoterápicos têm sido colocados à disposição no mercado. Apesar do aumento no consumo de diferentes produtos a base de plantas medicinais, fatores como a precariedade na fiscalização da produção e da venda têm comprometido a qualidade dos mesmos. O presente trabalho

  3. Entre-pass: Personalising u-learning with Intelligent Agents

    Microsoft Academic Search

    Brid C. Doherty; Peter T. O'Hare; Michael J. O'grady; Gregory M. P. O'hare

    2006-01-01

    Delivering learning materials anytime, anywhere is the goal underpinning the ubiquitous learning (u-learning) paradigm. Personalising u-learning courseware delivers a unique learning experience to each individual user. Personalisation of learning-content delivery requires certain system attributes; namely system adaptivity, intelligence, user profiling and awareness of user context. In this paper we describe the entre-pass system which is an example of this new

  4. FUSION ENTRE VSICULES P H 0SPHOLIPIDIQUES C. TAUPIN (*)

    E-print Network

    Paris-Sud XI, Université de

    FUSION ENTRE V�SICULES P H 0SPHOLIPIDIQUES C. TAUPIN (*) Stauffer Laboratory for Physical Chemistry comportent des études a) de l'augmentation du volume interne due à la fusion, b) de la décroissance du différentes. Divers agents induisant la fusion ont été étudiés. Abstract. - A variety of experiments show

  5. Phytohormonal networks promote differentiation of fiber initials on pre-anthesis cotton ovules grown in vitro and in planta.

    PubMed

    Kim, Hee Jin; Hinchliffe, Doug J; Triplett, Barbara A; Chen, Z Jeffrey; Stelly, David M; Yeater, Kathleen M; Moon, Hong S; Gilbert, Matthew K; Thyssen, Gregory N; Turley, Rickie B; Fang, David D

    2015-01-01

    The number of cotton (Gossypium sp.) ovule epidermal cells differentiating into fiber initials is an important factor affecting cotton yield and fiber quality. Despite extensive efforts in determining the molecular mechanisms regulating fiber initial differentiation, only a few genes responsible for fiber initial differentiation have been discovered. To identify putative genes directly involved in the fiber initiation process, we used a cotton ovule culture technique that controls the timing of fiber initial differentiation by exogenous phytohormone application in combination with comparative expression analyses between wild type and three fiberless mutants. The addition of exogenous auxin and gibberellins to pre-anthesis wild type ovules that did not have visible fiber initials increased the expression of genes affecting auxin, ethylene, ABA and jasmonic acid signaling pathways within 1 h after treatment. Most transcripts expressed differentially by the phytohormone treatment in vitro were also differentially expressed in the ovules of wild type and fiberless mutants that were grown in planta. In addition to MYB25-like, a gene that was previously shown to be associated with the differentiation of fiber initials, several other differentially expressed genes, including auxin/indole-3-acetic acid (AUX/IAA) involved in auxin signaling, ACC oxidase involved in ethylene biosynthesis, and abscisic acid (ABA) 8'-hydroxylase an enzyme that controls the rate of ABA catabolism, were co-regulated in the pre-anthesis ovules of both wild type and fiberless mutants. These results support the hypothesis that phytohormonal signaling networks regulate the temporal expression of genes responsible for differentiation of cotton fiber initials in vitro and in planta. PMID:25927364

  6. Geoffrey West, James H. Brown y Brian Enquist desarrollaron un modelo fractal de la ramificacin de sistemas de distribucin en plantas y animales

    E-print Network

    Nacional Autónoma de México, Universidad

    Geoffrey West, James H. Brown y Brian Enquist desarrollaron un modelo fractal de la ramificación de sistemas de distribución en plantas y animales que podría explicar el misterio del escalamiento de la tasa metabólica. Como todas las ideas nuevas, el modelo ha recibido tanto aplausos como agrias críticas. Veamos

  7. La evaluación de materiales didácticos para la educación a distancia

    Microsoft Academic Search

    JUAN RAMÓN BAUTISTA; RINA MARTÍNEZ ROMERO; MILA SAINZ IBAÑEZ

    The evaluation of teaching malerials for dista nce education is requi red by both tite accountabilfty process and tite need of professional development. lite particulorities associated to distance education imply that tite models usually applied to otiter models of education cannot be used without tite appropriate attjusttnent. Vais article presents a double theoretical frame both on evaluation and on distance

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

    PubMed

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

    2012-01-01

    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

  9. Les ERP entre mythe et ralits : les stratgies d'intgration fonctionnelle

    E-print Network

    Paris-Sud XI, Université de

    Septembre 2012 Les ERP entre mythe et réalités : les stratégies d'intégration fonctionnelle des entreprises françaises en 2006 Yusuf Kocoglu, Frédéric Moatty 157 Document de travail #12;#12;Les ERP entre-3096 ISBN 978-2-11-128681-8 #12;LES ERP ENTRE MYTHE ET RÉALITÉS : LES STRATÉGIES D'INTÉGRATION FONCTIONNELLE

  10. A toolset of aequorin expression vectors for in planta studies of subcellular calcium concentrations in Arabidopsis thaliana

    PubMed Central

    Mehlmer, Norbert; Parvin, Nargis; Hurst, Charlotte H.; Knight, Marc R.; Teige, Markus; Vothknecht, Ute C.

    2014-01-01

    Calcium has long been acknowledged as one of the most important signalling components in plants. Many abiotic and biotic stimuli are transduced into a cellular response by temporal and spatial changes in cellular calcium concentration and the calcium-sensitive protein aequorin has been exploited as a genetically encoded calcium indicator for the measurement of calcium in planta. The objective of this work was to generate a compatible set of aequorin expression plasmids for the generation of transgenic plant lines to measure changes in calcium levels in different cellular subcompartments. Aequorin was fused to different targeting peptides or organellar proteins as a means to localize it to the cytosol, the nucleus, the plasma membrane, and the mitochondria. Furthermore, constructs were designed to localize aequorin in the stroma as well as the inner and outer surface of the chloroplast envelope membranes. The modular set-up of the plasmids also allows the easy replacement of targeting sequences to include other compartments. An additional YFP-fusion was included to verify the correct subcellular localization of all constructs by laser scanning confocal microscopy. For each construct, pBin19-based binary expression vectors driven by the 35S or UBI10 promoter were made for Agrobacterium-mediated transformation. Stable Arabidopsis lines were generated and initial tests of several lines confirmed their feasibility to measure calcium signals in vivo. PMID:22213817

  11. Functional characterisation of metal(loid) processes in planta through the integration of synchrotron techniques and plant molecular biology

    PubMed Central

    Donner, Erica; Punshon, Tracy; Guerinot, Mary Lou; Lombi, Enzo

    2013-01-01

    Functional characterisation of the genes regulating metal(loid) homeostasis in plants is a major focus of crop biofortification, phytoremediation, and food security research. This paper focuses on the potential for advancing plant metal(loid) research by combining molecular biology and synchrotron-based techniques. Recent advances in x-ray focussing optics and fluorescence detection have greatly improved the potential of synchrotron techniques for plant science research, allowing metal(loids) to be imaged in vivo in hydrated plant tissues at sub-micron resolution. Laterally resolved metal(loid) speciation can also be determined. By using molecular techniques to probe the location of gene expression and protein localisation and combining it with this synchrotron-derived data, functional information can be effectively and efficiently assigned to specific genes. This paper provides a review of the state of the art in this field, and provides examples as to how synchrotron-based methods can be combined with molecular techniques to facilitate functional characterisation of genes in planta. PMID:22200921

  12. Agrobacterium tumefaciens Deploys a Superfamily of Type VI Secretion DNase Effectors as Weapons for Interbacterial Competition In Planta

    PubMed Central

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

    2014-01-01

    Summary 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

  13. Sucrose phosphate synthase and sucrose phosphate phosphatase interact in planta and promote plant growth and biomass accumulation

    PubMed Central

    Maloney, Victoria J.; Park, Ji-Young; Unda, Faride; Mansfield, Shawn D.

    2015-01-01

    Bioinformatic analysis indicates that sucrose phosphate synthase (SPS) contains a putative C-terminal sucrose phosphate phosphatase (SPP)-like domain that may facilitates the binding of SPP. If an SPS–SPP enzyme complex exists, it may provide sucrose biosynthesis with an additional level of regulation, forming a direct metabolic channel for sucrose-6-phosphate between these two enzymes. Herein, the formation of an enzyme complex between SPS and SPP was examined, and the results from yeast two-hybrid experiments suggest that there is indeed an association between these proteins. In addition, in planta bioluminescence resonance energy transfer (BRET) was observed in Arabidopsis seedlings, providing physical evidence for a protein interaction in live cells and in real time. Finally, bimolecular fluorescence complementation (BiFC) was employed in an attempt to detect SPS–SPP interactions visually. The findings clearly demonstrated that SPS interacts with SPP and that this interaction impacts soluble carbohydrate pools and affects carbon partitioning to starch. Moreover, a fusion construct between the two genes promotes plant growth in both transgenic Arabidopsis and hybrid poplar. PMID:25873678

  14. Sucrose phosphate synthase and sucrose phosphate phosphatase interact in planta and promote plant growth and biomass accumulation.

    PubMed

    Maloney, Victoria J; Park, Ji-Young; Unda, Faride; Mansfield, Shawn D

    2015-07-01

    Bioinformatic analysis indicates that sucrose phosphate synthase (SPS) contains a putative C-terminal sucrose phosphate phosphatase (SPP)-like domain that may facilitates the binding of SPP. If an SPS-SPP enzyme complex exists, it may provide sucrose biosynthesis with an additional level of regulation, forming a direct metabolic channel for sucrose-6-phosphate between these two enzymes. Herein, the formation of an enzyme complex between SPS and SPP was examined, and the results from yeast two-hybrid experiments suggest that there is indeed an association between these proteins. In addition, in planta bioluminescence resonance energy transfer (BRET) was observed in Arabidopsis seedlings, providing physical evidence for a protein interaction in live cells and in real time. Finally, bimolecular fluorescence complementation (BiFC) was employed in an attempt to detect SPS-SPP interactions visually. The findings clearly demonstrated that SPS interacts with SPP and that this interaction impacts soluble carbohydrate pools and affects carbon partitioning to starch. Moreover, a fusion construct between the two genes promotes plant growth in both transgenic Arabidopsis and hybrid poplar. PMID:25873678

  15. The maternal chromosome set is the target of the T-DNA in the in planta transformation of Arabidopsis thaliana.

    PubMed Central

    Bechtold, N; Jaudeau, B; Jolivet, S; Maba, B; Vezon, D; Voisin, R; Pelletier, G

    2000-01-01

    In planta transformation methods are now commonly used to transform Arabidopsis thaliana by Agrobacterium tumefaciens. The origin of transformants obtained by these methods has been studied by inoculating different floral stages and examining gametophytic expression of an introduced beta-glucuronidase marker gene encoding GUS. We observed that transformation can still occur after treating flowers where embryo sacs have reached the stage of the third division. No GUS expression was observed in embryo sacs or pollen of plants infiltrated with an Agrobacterium strain bearing a GUS gene under the control of a gametophyte-specific promoter. To identify the genetic target we used an insertion mutant in which a gene essential for male gametophytic development has been disrupted by a T-DNA bearing a Basta resistance gene (B(R)). In this mutant the B(R) marker is transferred to the progeny only by the female gametes. This mutant was retransformed with a hygromycin resistance marker and doubly resistant plants were selected. The study of 193 progeny of these transformants revealed 25 plants in which the two resistance markers were linked in coupling and only one plant where they were linked in repulsion. These results point to the chromosome set of the female gametophyte as the main target for the T-DNA. PMID:10924482

  16. Monitoring species of arbuscular mycorrhizal fungi in planta and in soil by nested PCR: application to the study of the impact of sewage sludge

    Microsoft Academic Search

    E. Jacquot; D. van Tuinen; S. Gianinazzi; V. Gianinazzi-Pearson

    2000-01-01

    Nested PCR is a highly sensitive procedure for monitoring species of arbuscular mycorrhizal (AM) fungi and for determining\\u000a their abundance in planta and in soil. DNA sequence variability in the D1 and D2 domains of the large ribosomal subunit is sufficient to design primers\\u000a which discriminate between AM fungi at the species level. The usefulness of this molecular approach is

  17. Donnees experimentales sur la diffusion des elements majeurs entre verres ou liquides de compositions basaltique, rhyolitique et phonolitique, entre 900°C et 1300°C, a pression ordinaire

    Microsoft Academic Search

    Chantal Alibert; Jean-Paul Carron

    1980-01-01

    Un processus expérimental de diffusion entre cylindres coaxiaux a permis d'analyser à la microsonde électronique les profils de diffusion des éléments Si, Ti, Al, Na, K, Ca, Mg, Fe entre trois couples de matériaux provenant de la fusion de roches naturelles de compositions basaltique, rhyolitique et phonolitique. Les coefficients de diffusion calculés sont très voisins pour tous les cations et

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

    PubMed Central

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

    2009-01-01

    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

  19. Identification of Epichloë Endophytes In Planta by a Microsatellite-Based PCR Fingerprinting Assay with Automated Analysis

    PubMed Central

    Moon, Christina D.; Tapper, Brian A.; Scott, Barry

    1999-01-01

    Epichloë endophytes are a group of filamentous fungi that include both sexual (Epichloë) and asexual (Neotyphodium) species. As a group they are genetically diverse and form both antagonistic and mutualistic associations with temperate grasses. We report here on the development of a microsatellite-based PCR system for fingerprinting this group of fungi with template isolated from either culture or infected plant material. M13mp19 partial genomic libraries were constructed for size-fractionated genomic DNA from two endophyte strains. These libraries were screened with a mixture of DIG-labeled dinucleotide and trinucleotide repeat probes. Positive clones were sequenced, and nine unique microsatellite loci were identified. An additional microsatellite was serendipitously identified in the 3? untranscribed region of the 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase gene from N. lolii Lp19. Primers were designed for each locus and a panel of endophytes, from different taxonomic groupings, was screened to determine the degree of polymorphism. On the basis of these results a multiplex assay was developed for strain identification with fluorescently labeled primers for five of these loci. Using this system the size of the products amplified can be precisely determined by automated analysis, and an allele profile for each strain can be readily generated. The assay was shown to resolve endophyte groupings to the level of known isozyme phenotype groupings. In a blind test the assay was used successfully to identify a set of endophytes in planta. A reference database of allele sizes has been established for the panel of endophytes examined, and this will be expanded as new strains are analyzed. PMID:10049893

  20. [Lichen ruber ulcerosus plantae].

    PubMed

    Huwyler, T; Künzi, W; Dörzapf, O

    1989-01-01

    A 66-year-old patient suffering from painful ulcerative lichen planus of the feet is presented. Various treatments (topical and oral corticosteroids, irradiation and a 6-month therapy with acitretin) were tried without success. Skin grafting in the affected areas was helpful and resulted with an acceptable and painless state. PMID:2921116

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

    PubMed Central

    2014-01-01

    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

  2. Les domestiques sngalaises au Maroc: Un travail servile entre tradition et modernit

    E-print Network

    Paris-Sud XI, Université de

    1 Les domestiques sénégalaises au Maroc: Un travail servile entre tradition et modernité Nazarena'hui le Maroc et le Sénégal et à poser les bases d'une quasi libre circulation entre les deux pays. Les femmes de ménage sénégalaises vers le Maroc. Aujourd'hui, même s'ils ne sont plus les seuls à déterminer

  3. CARTS ENTRE PRIX D'ACHAT ET PRIX DE VENTE D'UNE VARIABLE ALATOIRE

    E-print Network

    Boyer, Edmond

    ÉCARTS ENTRE PRIX D'ACHAT ET PRIX DE VENTE D'UNE VARIABLE ALÉATOIRE : UNE CLARIFICATION Jean'autre part la disparité entre le prix d'achat et le prix de vente d'une variable aléatoire. Les résultats que prix distincts peuvent être attachés à une même variable aléatoire : le prix qu'un décideur est prêt à

  4. Pour un nouveau paradigme. La dichotomie conceptuelle entre espace et temps

    E-print Network

    1 Pour un nouveau paradigme. La dichotomie conceptuelle entre espace et temps est (devenue) un séparés d'espace et de temps. La théorie physique de la relativité promeut une association plus étroite entre temps et espace, mais elle ne change en rien cette dichotomie conceptuelle : elle relie les

  5. Une mesure de la discrimination dans l'écart de salaire entre hommes et femmes

    Microsoft Academic Search

    Dominique Meurs; Sophie Ponthieux

    2000-01-01

    [spa] Una medición de la discriminación en la diferencia de salario entre hombres y mujeres Las diferencias de salario entre hombres y mujeres se deben a multiples factores. Primero, los empleos ocupados no tienen las mismas caracterlsticas: las duraciones medias de trabajo de las mujeres son más cortas, esencialmente a causa del tiempo parcial (que afecta a un tercio de

  6. VRIFICATION EXPRIMENTALEDES RELATIONS DE KRAMERS-KRONIG ENTRE INDICES DE RFRACTION ET D'EXTINCTION

    E-print Network

    Boyer, Edmond

    691 VÉRIFICATION EXPÉRIMENTALEDES RELATIONS DE KRAMERS-KRONIG ENTRE INDICES DE RÉFRACTION ET D'EXTINCTION expérimentalement les relations de Kramers-Kronig, entre les indices de réfraction et d'extinction. Pour ceci nous'indice de réfraction mesurée expérimentalement et de la transformée de Kramers-Kronig de l'indice d'extinction

  7. L'valuation des exprimentations du RSA : entre lgitimation de l'efficacit et

    E-print Network

    Paris-Sud XI, Université de

    L'évaluation des expérimentations du RSA : entre légitimation de l'efficacité et usages politiques-Ouest Nanterre) aureliencasta@wanadoo.fr n° 2013-1 #12;L'évaluation des expérimentations du RSA : entre Active (RSA) a fait l'objet d'une forte attention portée à l'évaluation, jusqu'ici relativement peu

  8. 263 708 entres la BU. 117 782 documents emprunts au cours de l'anne,

    E-print Network

    Jeanjean, Louis

    263 708 entrées à la BU. 117 782 documents empruntés au cours de l'année, dont 15 505 documents consultés sur place dans les salles de travail. 1 895 documents réservés. 1 049 documents ont circulé entre Belfort, Montbéliard et Besançon 1 362 documents échangés en prêt entre bibliothèques 258 heures de

  9. Management stratgique des frontires et RSE : l'entreprise entre performance et responsabilit

    E-print Network

    Paris-Sud XI, Université de

    Porter M. & Kramer M. (2011) dans Harvard Business Review proposant de refonder l'analyse stratégique liens entre stratégie et RSE sous l'angle de Business Cases. Ils tentent ainsi de mettre en évidence les

  10. Test de causalite indirecte entre deux series extraites d'un modele vectoriel autoregressif stationnaire

    Microsoft Academic Search

    C. Bruneau

    1996-01-01

    Nous proposons une procedure de test pour analyser les liens de causalite indirects entre des series chronologiques extraites d'un systeme multivarie dont la dynamique est caracterise par un model vectoriel autoregressif stationnaire d'ordre fini.

  11. Inter-relations entre aiguilles de calcite et hyphes Gabriel CALLOT, Andr GUYON Daniel MOUSAIN

    E-print Network

    Paris-Sud XI, Université de

    Inter-relations entre aiguilles de calcite et hyphes mycéliens Gabriel CALLOT, André GUYON Daniel'intérieur des hyphes de Basidiomycètes. Ces concentrations minérales s'identifient aux aiguilles de calcite

  12. PUENTES ENTRE LA LITERATURA Y LAS ARTES PLSTICAS. CURSO DE EDUCACIN CONTINUA POR LA DRA. VERNICA

    E-print Network

    Islas, León

    PUENTES ENTRE LA LITERATURA Y LAS ARTES PLÁSTICAS. CURSO DE EDUCACIÓN CONTINUA POR LA DRA. VERÓNICA, estudiantes y público en general interesado en realizar investigaciones interdisciplinarias. Curso de ocho

  13. Variabilit des phnomnes d'interfrence entre Vicia sativa L. et Avena sativa L.. I. Dynamique

    E-print Network

    Boyer, Edmond

    Agronomie Variabilité des phénomènes d'interférence entre Vicia sativa L. et Avena sativa L.. I; Variability of the phenomena of interferences between Vicia sativa L. and Avena sativa L. I. Growth dynamics

  14. Variabilit des phnomnes d'interfrences entre Vicia sativa L. et Avena sativa L.

    E-print Network

    Paris-Sud XI, Université de

    Agronomie Variabilité des phénomènes d'interférences entre Vicia sativa L. et Avena sativa L. : II of the phenomena of interferences between Vicia sativa L. and Avena sativa L.: II. Nitro- gen nutrition

  15. Oli de Mallorca: interacci positiva entre l'home i el medi

    E-print Network

    Oro, Daniel

    #12;Oli de Mallorca: interacció positiva entre l'home i el medi Carme Rosselló Matas LLiçó-2011 interior lliço inaug. UOM 2011-12corregida 2a vegada 23/9/11 11:04 Página 2 #12;Oli de Mallorca: interacció positiva entre l'home i el medi 3 La cinquena edició dels premis La Gota d'Oli de Mallorca va tenir lloc l

  16. Geochemical, multi-isotopic and hydrogeological characterization of the mineralized groundwater body of the Entre-deux-Mers area, Gironde

    E-print Network

    Paris-Sud XI, Université de

    body of the Entre-deux-Mers area, Gironde (South-West of France). Malcuit E.a,b , Négrel Ph.a , Petelet on the Entre-deux-Mers region, between the Garonne and the Dordogne rivers, where the groundwaters show strong-isotopic and hydrogeological characterization of this mineralized groundwater sector of the Entre-deux- Mers area. The main

  17. Avaliao de mecanismos de gesto de recursos no mapeamento entre os modelos IntServ e DiffServ

    E-print Network

    Monteiro, Edmundo

    1 Avaliação de mecanismos de gestão de recursos no mapeamento entre os modelos IntServ e DiffServ mecanismos de mapeamento entre os modelos IntServ e DiffServ. Os mecanismos propostos são de natureza decisões de admissão de novos fluxos IntServ na rede DiffServ. Este trabalho foca o mapeamento entre o

  18. Droits fonciers des femmes au Maroc Entre complexit du systme foncier et discrimination

    E-print Network

    Boyer, Edmond

    Droits fonciers des femmes au Maroc Entre complexité du système foncier et discrimination Fatiha Daoudi E & E, n° 4 Les Etudes et Essais du Centre Jacques Berque N° 4 ­ Octobre 2011 Rabat (Maroc) halshs-00694238,version1-3May2012 #12;halshs-00694238,version1-3May2012 #12;3 Droits fonciers des femmes au Maroc

  19. Les stimulations olfactives dans les relations entre l'enfant et la mre

    E-print Network

    Boyer, Edmond

    Les stimulations olfactives dans les relations entre l'enfant et la mère B. SCHAAL H. MONTAGNER E la naissance. Les études ont porté en particulier sur les informations olfactives. Nous avons d discrimination olfactive du nouveau-né sont beaucoup plus rares. Cependant, Engen et ai. (1963) et Steiner (1973

  20. Projeto CityOn da Biodroid entre os finalistas dos Digital Communication

    E-print Network

    Instituto de Sistemas e Robotica

    Especiais Críticas Antevisões Vídeos Imagens Downloads Truques e Dicas 3DS DS PC PS3 PSP VITA WII WIIU X360-se entre os finalistas na categoria Best Corporate Games. O projeto CityOn da Biodroid, EDP e Instituto finalistas na categoria Best Corporate Games, o jogo da Biodroid coloca o jogador no papel de gestor dos

  1. Les index pour les entrepts de donnes : comparaison entre index arbre-B et Bitmap

    E-print Network

    Paris-Sud XI, Université de

    Les index pour les entrepôts de données : comparaison entre index arbre-B et Bitmap El Amin Aoulad données, cette efficacité repose sur la sélection d'index pertinents et leur combinaison avec les vues matérialisé, à noter que La sélection d'index est un problème NP-complet car le nombre d'index est exponentiel

  2. Comparación entre un arrancador electrónico diseñado con IGBT's y un arrancador electrónico comercial

    Microsoft Academic Search

    M. C. Gabriel; Domínguez Sánchez; Mario Salvador; Esparza González

    Resumen. En este artículo se presenta una comparación entre un arrancador electrónico de estado sólido diseñado para motores trifásicos en el Instituto Tecnológico de A guascalientes basado en IGBT's (Transistores Aislados por Compuerta) con una propuesta de disparo, se presenta el diseño del arrancador, los resultados obte nidos y la respuesta para las mismas condiciones de opera ción de un

  3. UMA ANÁLISE COMPARATIVA ENTRE OS CLUSTERS ECOLÓGICOS DA LAGOA RODRIGO DE FREITAS E DE BOULDER, COLORADO

    Microsoft Academic Search

    Andre Luiz Zopelari; Aldara da Silva Cesar; Marcio Lopes Pimenta; Dayanne Renata Timoteo Da Silva; Luis Otavio Salvador

    2008-01-01

    O propósito deste artigo é estabelecer uma comparação entre duas cidades importantes no cenário mundial de Clusters Ecológicos, no que se refere à geração de vantagens competitivas locais na Arena Competitiva dos Alimentos e Produtos Naturais e Orgânicos. Os resultados obtidos neste trabalho são decorrentes do emprego de uma visão teórica cunhada por Porter (1999) e complementada por Lima (2003)

  4. La Serbie : entre l'Union europenne et le Kosovo Par Jacques RUPNIK

    E-print Network

    Boyer, Edmond

    'ouvrir des négociations directes avec Pristina sur toute une série de problèmes concrets concernant la kosovares ont décidé, le 25 juillet 2011, de prendre le contrôle de deux postes frontaliers (Jarinje et veille du sommet européen, la tension entre le Kosovo et la Serbie n'a fait que croître. Vingt

  5. Partage de ressources pdagogiques numriques entre enseignants : une enqute au Vietnam

    E-print Network

    Paris-Sud XI, Université de

    125 Partage de ressources pédagogiques numériques entre enseignants : une enquête au Vietnam Thi'Éducation au Vietnam durant l'été 2010. Nous avons fait passer un questionnaire aux participants (N = 905) et résultats obtenus et fournit quelques explications liées au contexte culturel et social du Vietnam. MOTS

  6. L'art contemporain entre Le temps et L'histoire

    E-print Network

    Kambhampati, Patanjali

    L'art contemporain entre Le temps et L'histoire Cycle de conférences et de conversations Musée d'art contemporain de Montréal 16 janvier ­ 23 mai 2013 entrée gratuite Musée d'art contemporain de Montréal 185, rue Sainte-Catherine Ouest Métro Place-des-Arts www.macm.org Depuis la fin des années 1980, l'art

  7. Des ponts entre les hommes : Les paradoxes de gosymboles dans les villes en guerre

    E-print Network

    Paris-Sud XI, Université de

    Des ponts entre les hommes : Les paradoxes de géosymboles dans les villes en guerre Bénédicte Culture). Les ponts, des géosymboles de l'échange ? Les symboles paraissent clairs : les ponts font la comblés en même temps que la reconstruction du bâti. Les ponts deviennent alors de véritables géosymboles

  8. UNE CULTURE MEDITERRANEENNE FRAGMENTEE : LA REVENDICATION AMAZIGHE ENTRE LOCAL(ITE) ET

    E-print Network

    Boyer, Edmond

    1 UNE CULTURE MEDITERRANEENNE FRAGMENTEE : LA REVENDICATION AMAZIGHE ENTRE LOCAL(ITE) ET'études africaines à l'EHESS et à l'Institut de Recherche sur le Maghreb Contemporain (IRMC, Tunis). Domaines de recherche : Anthropologie de l'identité et de l'ethnicité ; revendications identitaires et particularistes

  9. PROPOSTA CURSO DE VERN: A DIVULGACIN COMO PONTE ENTRE CIENCIA E SOCIEDADE

    E-print Network

    Fraguela, Basilio B.

    PROPOSTA CURSO DE VERÁN: A DIVULGACIÓN COMO PONTE ENTRE CIENCIA E SOCIEDADE 2 e 3 de xullo de 2014 BEATRIZ HERVELLA NOGUEIRA. Licenciada en Ciencias Físicas pola USC e cofundadora de 4gotas atmosfera y CONFERENCIA - ESPECTÁCULO RICARDO PAREDES PAMPÍN. Licenciado en Ciencias Físicas pola USC e profesor de

  10. Rapports entre mouvements islamistes, nationalistes et de gauche au Moyen-Orient arabe.

    E-print Network

    Paris-Sud XI, Université de

    Rapports entre mouvements islamistes, nationalistes et de gauche au Moyen-Orient arabe. Puisque les « islamisme », en dédaignant parfois lhistoire des autres courants au Moyen-Orient arabe, de gauche, nationalistes arabes, libéraux, qui participent aussi, même de manière parfois minoritaire, aux champs

  11. Les rvolutions arabes entre csures et remembrances : tiers-mondisme, question palestinienne et utopies chiliastiques.

    E-print Network

    Paris-Sud XI, Université de

    Les révolutions arabes entre césures et remembrances : tiers-mondisme, question palestinienne et utopies chiliastiques. Nicolas Dot-Pouillard Le nouveau des révolutions arabes. Les processus révolutionnaires dans le monde arabe ont sans doute fait office de « réveil » (Badiou, 2011). Ce sont des révoltes

  12. La pertinence informationnelle additionnelle des normes comptables internationales : comparaison entre les principaux

    E-print Network

    Boyer, Edmond

    entre les principaux marchés européens. The Additional value relevance of IAS/IFRS : a comparison between the major European markets. Résumé La mise en place d'un nouveau référentiel comptable IFRS additionnelle dû à l'adoption des IFRS en 2005. Les résultats des tests empiriques indiquent différent degrés de

  13. RELACIN ENTRE NDVI Y CONTENIDO DE METALES EN RHIZOPHORA MANGLE EN EL SUROESTE DE PUERTO RICO

    E-print Network

    Gilbes, Fernando

    RELACI�N ENTRE NDVI Y CONTENIDO DE METALES EN RHIZOPHORA MANGLE EN EL SUROESTE DE PUERTO RICO Estudiante Graduado ­ Departamento de Ingeniería en Computadoras y Eléctrica Universidad de Puerto Rico. Sirven como fuente de nutrición y hábitat para muchas especies; ayudan contra la erosión en las costas

  14. DFORMATION ET MODES DE RUPTURE DU NIOBIUM ENTRE 2014196 C ET 20 C

    E-print Network

    Paris-Sud XI, Université de

    of three distinct lots of niobium containing different interstitial and substitutional impurity467 DÉFORMATION ET MODES DE RUPTURE DU NIOBIUM ENTRE 2014196 °C ET 20 °C B. HOUSSIN, J. F. FRIES, C déformation plastique du niobium aux températures inférieures à + 20 °C a été étudiée sur trois types de

  15. VOLUTION DES PROPRITS MCANIQUES DU NIOBIUM DE DIFFRENTES PURETS ENTRE 20 C ET 850 C

    E-print Network

    Paris-Sud XI, Université de

    of niobium containing varying interstitial and substitutional impurity concentrations were inves- tigated371 ÉVOLUTION DES PROPRIÉTÉS MÉCANIQUES DU NIOBIUM DE DIFFÉRENTES PURETÉS ENTRE 20 °C ET 850 °C J. F. FRIES, C. CIZERON et P. LACOMBE Résumé. 2014 La déformation plastique du niobium dans le domaine

  16. Entre cot historique et valeur de march Une histoire de la valeur comptable en France

    E-print Network

    Boyer, Edmond

    question de la juste valeur a occupé de nombreux chercheurs en comptabilité (Casta et Colasse [2001Entre coût historique et valeur de marché Une histoire de la valeur comptable en France (XIXe Université Paris Dauphine karine.fabre@dauphine.fr Depuis l'introduction des normes IFRS en France, la

  17. agronomie: agriculture and environment Relation entre la vitesse relative de croissance

    E-print Network

    Paris-Sud XI, Université de

    and total nitrogen content was studied during the vegetative growth of lettuce. Four treatments (two levels take into account the reduced form of nitrogen only, ie, after the subtraction of nitrate nitrogen from are taken into account. growth / lettuce / nitrogen / nitrate Résumé — La relation entre la vitesse

  18. Article original Relations entre le nombre de fœtus par corne

    E-print Network

    Paris-Sud XI, Université de

    Article original Relations entre le nombre de fœtus par corne utérine, la taille de portée à dans une corne utérine. Le nombre de foetus implantés était compté par endoscopie. Il existe une une corne sur le taux de survie foetale (-5,2 points) et le poids moyen des lapereaux à la naissance

  19. Arnaud SERRY Les transports en mer Noire : vers une nouvelle interface entre UE et CEI

    E-print Network

    Paris-Sud XI, Université de

    1 Arnaud SERRY Les transports en mer Noire : vers une nouvelle interface entre UE et CEI Ce texte situation géopolitique essentielle dans l'Europe de demain. Et la mer Noire est désormais un point de passage privilégié pour les échanges. Un trafic dense limité par les détroits La mer Noire se caractérise

  20. LA TEORIA DE LA DISONANCIA: UN ENCUENTRO ENTRE MUSICA Y MATEMATICAS

    E-print Network

    Gràcia, Xavier

    LA TEOR´IA DE LA DISONANCIA: UN ENCUENTRO ENTRE M´USICA Y MATEM´ATICAS XAVIER GR`ACIA Dep. Matem´usica y matem´atica Espectros de los instrumentos musicales Teor´ia de las escalas Teor´ia de la agradable. En m´usica, "disonante" no significa necesariamente desagradable! Hay varios conceptos de

  1. Frontires entre rcit et hors rcit dans les oeuvres narratives de Lope de Vega Florence Rayni

    E-print Network

    Paris-Sud XI, Université de

    Frontières entre récit et hors récit dans les oeuvres narratives de Lope de Vega Florence Raynié Vega présentent des micro- structures variées qui interrompent le continuum narratif1. Ainsi, la macro intitulée Lope de Vega prosateur. hal-00949541,version1-19Feb2014 Manuscrit auteur, publié dans "Cahiers de

  2. GRANGER ET FOUCAULT LECTEURS DE LEVI-STRAUSS. L'ANTHROPOLOGIE STRUCTURALE ENTRE EPISTEMOLOGIE ET ARCHEOLOGIE

    E-print Network

    Paris-Sud XI, Université de

    -Gaston Granger, dans Pensée formelle et sciences de l'homme (1960) et par Michel Foucault, dans Les Mots et lesGRANGER ET FOUCAULT LECTEURS DE LEVI-STRAUSS. L'ANTHROPOLOGIE STRUCTURALE ENTRE EPISTEMOLOGIE ET démarche d'une « anthropologie structurale », Granger et Foucault convoquent en fait l'auteur des

  3. Ecole Doctorale : Sciences et Vie, Sant, Agronomie, Environnement un simulateur pour tudier les compromis entre perf

    E-print Network

    Paris-Sud XI, Université de

    Ecole Doctorale : Sciences et Vie, Santé, Agronomie, Environnement un simulateur pour étudier les, Agronomie, Environnement N° d'ordre 586 THESE Pour l'obtention du grade de Docteur d'université Spécialité : Agronomie Dynamilk : un simulateur pour étudier les compromis entre performances animales, utilisation des

  4. Les conditions de la concurrence internationale entre soja, arachide et colza

    Microsoft Academic Search

    J.-P. Berlan; J.-P. Bertrand; L. Lebas; M. Marlone

    1976-01-01

    [fre] Arachide, colza et soja sont des produits comparables du point de vue alimentaire. Ce sont des oléoprotéa- gineux, dont la composition en huile et protéines varie. Leurs utilisations, la localisation de leurs productions, sont fonction, à un moment donné, des rapports, des flux d'échanges entre pays, et des politiques protectionnistes ou libre- échangistes des Etats. . Ainsi la politique

  5. INTRODUCCION Entre representacin y apropiacin, las formas de ver y hablar del espacio

    E-print Network

    Boyer, Edmond

    INTRODUCCION Entre representación y apropiación, las formas de ver y hablar del espacio Odile "Organización social y representación del espacio. Seminario Internacional de investigación CIESAS-ORSTOM" que análisis del espacio -su conformación, representación, percepción y apropiación- como pilar fundamental de

  6. Un systme de traduction de verbes entre arabe standard et arabe dialectal par analyse morphologique profonde

    E-print Network

    Paris-Sud XI, Université de

    Un système de traduction de verbes entre arabe standard et arabe dialectal par analyse@ccls.columbia.edu RÉSUMÉ Le développement d'outils de TAL pour les dialectes de l'arabe se heurte à l'absence de ressources pour ces derniers. Comme conséquence d'une situation de diglossie, il existe une variante de l'arabe, l'arabe

  7. Darwin et la socialit : entre anthropomorphisme et gradualisme. Between anthropomorphism and gradualism: Darwin and sociality.

    E-print Network

    Paris-Sud XI, Université de

    Darwin et la socialité : entre anthropomorphisme et gradualisme. Between anthropomorphism and gradualism: Darwin and sociality. Gérald FOURNIER1 Abstract We propose, in this article, an analysis of the Darwin's approach to sociality. Sociality is perfectly integrated into the selective model, and is caused

  8. The Old Curiosity Shop: entre transparence et secret. Isabelle Hervouet-Farrar

    E-print Network

    Paris-Sud XI, Université de

    The Old Curiosity Shop: entre transparence et secret. Isabelle Hervouet-Farrar Université Blaise Pascal ­ Clermont II CELIS (EA 1002) PRES Clermont-Université The Old Curiosity Shop se construit autour : the Reader in The Old Curiosity Shop », The Reader in the Dickens World, London, 1981, rpt. Michael

  9. Sur le comportement magnétique de l'acide desoxyribonucléique (ADN) entre 80 et 300°K

    Microsoft Academic Search

    N. Perakis; F. Kern

    1964-01-01

    Deux échantillons d'acide desoxyribonucléique (ADN) sont étudiés, préparés à partir du thymus de veau, l'un «simple», l'autre hautement polymérisé et très pur. Le comportement magnétique du système est représenté entre 80 et 300°K par la relation\\u000a

  10. Taille des particules alimentaires dans le canal et entre les lames du feuillet,

    E-print Network

    Boyer, Edmond

    Taille des particules alimentaires dans le canal et entre les lames du feuillet, et dans les between the omasal leaves, in the omasal canal, in the reticulum and in the abomasum in steers of small particles in the interlaminal space of the omasum and in the duodenum than in the omasal canal

  11. L'AFFAIRE DES POISONS : ENTRE SCIENCE ET LITTRATURE, UNE RESSOURCE POUR

    E-print Network

    Paris-Sud XI, Université de

    L'AFFAIRE DES POISONS : ENTRE SCIENCE ET LITTÉRATURE, UNE RESSOURCE POUR L'ENSEIGNEMENT Philippe épisode de l'« Affaire des poisons », laquelle s'est étalée sur la période 1672-1682. Un résumé des faits est consultable sur le site internet du ministère de la justice3 . « L'« Affaire des poisons » est l

  12. Arabidopsis DAYU/ABERRANT PEROXISOME MORPHOLOGY9 Is a Key Regulator of Peroxisome Biogenesis and Plays Critical Roles during Pollen Maturation and Germination in Planta[W

    PubMed Central

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

    2014-01-01

    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

  13. Mutations in the Capsid Protein of Brome Mosaic Virus Affecting Encapsidation Eliminate Vesicle Induction In Planta: Implications for Virus Cell-to-Cell Spread

    PubMed Central

    Bamunusinghe, Devinka; Chaturvedi, Sonali; Seo, Jang-Kyun

    2013-01-01

    Positive-strand RNA viruses are known to rearrange the endomembrane network to make it more conducive for replication, maturation, or egress. Our previous transmission electron microscopic (TEM) analysis showed that ectopic expression of wild-type (wt) capsid protein (CP) of Brome mosaic virus (BMV) has an intrinsic property of modifying the endoplasmic reticulum (ER) to induce vesicles similar to those present in wt BMV infection. In this study, we evaluated the functional significance of CP-mediated vesicle induction to the BMV infection cycle in planta. Consequently, the cytopathologic changes induced by wt CP or its mutants defective in virion assembly due to mutations engineered in either N- or C-proximal domains were comparatively analyzed by TEM in two susceptible (Nicotiana benthamiana and Chenopodium quinoa) and one nonhost (N. clevelandii) plant species. The results showed that in susceptible hosts, CP-mediated ER-derived vesicle induction is contingent on the expression of encapsidation-competent CP. In contrast, unlike in N. benthamiana and C. quinoa, transient expression of wt CP in nonhost N. clevelandii plants eliminated vesicle induction. Additionally, comparative source-to-sink analysis of virus spread in leaves of N. benthamiana and N. clevelandii coexpressing wt BMV and Cucumber mosaic virus (CMV) showed that despite trans-encapsidation, CMV failed to complement the defective cell-to-cell movement of BMV. The significance and relation of CP-mediated vesicle induction to virus cell-to-cell movement are discussed. PMID:23741003

  14. Mutations in the capsid protein of Brome mosaic virus affecting encapsidation eliminate vesicle induction in planta: implications for virus cell-to-cell spread.

    PubMed

    Bamunusinghe, Devinka; Chaturvedi, Sonali; Seo, Jang-Kyun; Rao, A L N

    2013-08-01

    Positive-strand RNA viruses are known to rearrange the endomembrane network to make it more conducive for replication, maturation, or egress. Our previous transmission electron microscopic (TEM) analysis showed that ectopic expression of wild-type (wt) capsid protein (CP) of Brome mosaic virus (BMV) has an intrinsic property of modifying the endoplasmic reticulum (ER) to induce vesicles similar to those present in wt BMV infection. In this study, we evaluated the functional significance of CP-mediated vesicle induction to the BMV infection cycle in planta. Consequently, the cytopathologic changes induced by wt CP or its mutants defective in virion assembly due to mutations engineered in either N- or C-proximal domains were comparatively analyzed by TEM in two susceptible (Nicotiana benthamiana and Chenopodium quinoa) and one nonhost (N. clevelandii) plant species. The results showed that in susceptible hosts, CP-mediated ER-derived vesicle induction is contingent on the expression of encapsidation-competent CP. In contrast, unlike in N. benthamiana and C. quinoa, transient expression of wt CP in nonhost N. clevelandii plants eliminated vesicle induction. Additionally, comparative source-to-sink analysis of virus spread in leaves of N. benthamiana and N. clevelandii coexpressing wt BMV and Cucumber mosaic virus (CMV) showed that despite trans-encapsidation, CMV failed to complement the defective cell-to-cell movement of BMV. The significance and relation of CP-mediated vesicle induction to virus cell-to-cell movement are discussed. PMID:23741003

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

    PubMed Central

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

    2012-01-01

    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

  16. In Planta Biocontrol of Pectobacterium atrosepticum by Rhodococcus erythropolis Involves Silencing of Pathogen Communication by the Rhodococcal Gamma-Lactone Catabolic Pathway.

    PubMed

    Barbey, Corinne; Crépin, Alexandre; Bergeau, Dorian; Ouchiha, Asma; Mijouin, Lily; Taupin, Laure; Orange, Nicole; Feuilloley, Marc; Dufour, Alain; Burini, Jean-François; Latour, Xavier

    2013-01-01

    The virulence of numerous Gram-negative bacteria is under the control of a quorum sensing process based on synthesis and perception of N-acyl homoserine lactones. Rhodococcus erythropolis, a Gram-positive bacterium, has recently been proposed as a biocontrol agent for plant protection against soft-rot bacteria, including Pectobacterium. Here, we show that the ?-lactone catabolic pathway of R. erythropolis disrupts Pectobacterium communication and prevents plant soft-rot. We report the first characterization and demonstration of N-acyl homoserine lactone quenching in planta. In particular, we describe the transcription of the R. erythropolis lactonase gene, encoding the key enzyme of this pathway, and the subsequent lactone breakdown. The role of this catabolic pathway in biocontrol activity was confirmed by deletion of the lactonase gene from R. erythropolis and also its heterologous expression in Escherichia coli. The ?-lactone catabolic pathway is induced by pathogen communication rather than by pathogen invasion. This is thus a novel and unusual biocontrol pathway, differing from those previously described as protecting plants from phytopathogens. These findings also suggest the existence of an additional pathway contributing to plant protection. PMID:23805254

  17. High-throughput in planta expression screening identifies a class II ethylene-responsive element binding factor-like protein that regulates plant cell death and non-host resistance

    Microsoft Academic Search

    Khairun Hisam Bin Nasir; Yoshihiro Takahashi; Akiko Ito; Hiromasa Saitoh; Hideo Matsumura; Hiroyuki Kanzaki; Takeshi Shimizu; Minako Ito; Shizuko Fujisawa; Prakash C. Sharma; Masaru Ohme-Takagi; Sophien Kamoun; Ryohei Terauchi

    2005-01-01

    Summary We performed high-throughput screening using the potato virus X (PVX) system to overexpress Nicotiana benthamiana genes in planta and identify positive regulators of cell death. This screening identified NbCD1 ,a novel class II ethylene-responsive element binding factor (ERF), as a potent inducer of the hypersensitive response (HR)-like cell death. NbCD1 expression was induced by treatments with INF1 elicitor and

  18. LA RELATION ENTRE L'OCTROI D'OPTIONS SUR ACTIONS ET LES INDICATEURS COMPTABLES ET FINANCIERS

    E-print Network

    Paris-Sud XI, Université de

    LA RELATION ENTRE L'OCTROI D'OPTIONS SUR ACTIONS ET LES INDICATEURS COMPTABLES ET FINANCIERS : UNE relation entre les octrois d'options sur actions et la performance organisationnelle de l'entreprise. Notre premier objectif est d'évaluer dans quelle mesure l'ampleur des octrois d'options d'achat d'actions est

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

    PubMed

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

    2013-04-01

    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

  20. Post-abscission, pre-dispersal seeds of Digitalis purpurea remain in a developmental state that is not terminated by desiccation ex planta

    PubMed Central

    Butler, L. H.; Hay, F. R.; Ellis, R. H.; Smith, R. D.

    2009-01-01

    Background and Aims Seed quality may be compromised if seeds are harvested before natural dispersal (shedding). It has been shown previously that slow or delayed drying can increase potential quality compared with immediate rapid drying. This study set out to investigate whether or not there is a critical moisture content, below which drying terminates maturation events for seeds harvested after mass maturity but before dispersal. Methods Seeds of foxglove (Digitalis purpurea) in the post-abscission pre-dispersal phase were held at between 15 and 95 % RH for 4 or 8 d, with or without re-hydration to 95 % RH for a further 4 d, before drying to equilibrium at 15 % RH. In addition, dry seeds were primed for 48 h at ?1 MPa. Subsequent seed longevity was assessed at 60 % RH and 45 °C. Key Results Rate of germination and longevity were improved by holding seeds at a wide range of humidities after harvest. Longevity was further improved by re-hydration at 95 % RH. Priming improved the longevity of the seeds dried immediately after harvest, but not of those first held at 95 % RH for 8 d prior to drying. Conclusions Maturation continued ex planta in these post-abscission, pre-dispersal seeds of D. purpurea dried at 15–80 % RH at a rate correlated positively with RH (cf. ageing of mature seeds). Subsequent re-hydration at 95 % RH enabled a further improvement in quality. Priming seeds initially stored air-dry for 3 months also allowed maturation events to resume. However, once individual seeds within the population had reached maximum longevity, priming had a negative impact on their subsequent survival. PMID:19136494

  1. Virulence and in?planta movement of Xanthomonas hortorum pv. pelargonii are affected by the diffusible signal factor (DSF)-dependent quorum sensing system.

    PubMed

    Barel, Victoria; Chalupowicz, Laura; Barash, Isaac; Sharabani, Galit; Reuven, Michal; Dror, Orit; Burdman, Saul; Manulis-Sasson, Shulamit

    2015-09-01

    Xanthomonas hortorum pv. pelargonii (Xhp), the causal agent of bacterial blight in pelargonium, is the most threatening bacterial disease of this ornamental worldwide. To gain an insight into the regulation of virulence in Xhp, we have disrupted the quorum sensing (QS) genes, which mediate the biosynthesis and sensing of the diffusible signal factor (DSF). Mutations in rpfF (encoding the DSF synthase) and rpfC (encoding the histidine sensor kinase of the two-component system RfpC/RpfG) and overexpression of rpfF showed a significant reduction in incidence and severity of the disease on pelargonium. Confocal laser scanning microscopy images of inoculated plants with a green fluorescent protein (GFP)-labelled wild-type strain showed that the pathogen is homogeneously dispersed in the lumen of xylem vessels, reaching the apex and invading the intercellular spaces of the leaf mesophyll tissue within 21?days. In contrast, the rpfF and rpfC knockout mutants, as well as the rpfF-overexpressing strain, remained confined to the vicinity of the inoculation site. The rpfF and rpfC mutants formed large incoherent aggregates in the xylem vessels that might interfere with upward movement of the bacterium within the plant. Both mutants also formed extended aggregates under in?vitro conditions, whereas the wild-type strain formed microcolonies. Expression levels of putative virulence genes in?planta were substantially reduced within 48?h after inoculation with the QS mutants when compared with the wild-type. The results presented indicate that an optimal DSF concentration is crucial for successful colonization and virulence of Xhp in pelargonium. PMID:25530086

  2. High-throughput in planta expression screening identifies an ADP-ribosylation factor (ARF1) involved in non-host resistance and R gene-mediated resistance.

    PubMed

    Coemans, Bert; Takahashi, Yoshihiro; Berberich, Thomas; Ito, Akiko; Kanzaki, Hiroyuki; Matsumura, Hideo; Saitoh, Hiromasa; Tsuda, Shinya; Kamoun, Sophien; Sági, László; Swennen, Rony; Terauchi, Ryohei

    2008-01-01

    To identify positive regulators of cell death in plants, we performed a high-throughput screening, employing potato virus X-based overexpression in planta of a cDNA library derived from paraquat-treated Nicotiana benthamiana leaves. The screening of 30,000 cDNA clones enabled the identification of an ADP-ribosylation factor 1 (ARF1) that induces cell death when overexpressed in N. benthamiana. Overexpression of the guanosine diphosphate (GDP)-locked mutant of ARF1 did not trigger cell death, suggesting that ARF1 guanosine triphosphatase (GTPase) activity is necessary for the observed cell death-inducing activity. The ARF1 transcript level increased strongly following treatment with Phytophthora infestans elicitor INF1, as well as inoculation with a non-host pathogen Pseudomonas cichorii in N. benthamiana. In addition, ARF1 was induced in the interaction between the N gene and tobacco mosaic virus (TMV) in Nicotiana tabacum. By contrast, inoculation with the virulent pathogen Pseudomonas syringae pv. tabaci did not affect ARF1 expression in N. benthamiana. Virus-induced gene silencing of ARF1 in N. benthamiana resulted in a stunted phenotype, and severely hampered non-host resistance towards P. cichorii. In addition, ARF1 silencing partially compromised resistance towards TMV in N. benthamiana containing the N resistance gene. By contrast, and in accordance with the ARF1 gene expression profile, silencing of ARF1 transcription did not alter the susceptibility of N. benthamiana towards the pathogen P. syringae pv. tabaci. These results strongly implicate ARF1 in the non-host resistance to bacteria and N gene-mediated resistance in N. benthamiana. PMID:18705881

  3. The CRISPR/Cas system can be used as nuclease for in planta gene targeting and as paired nickases for directed mutagenesis in Arabidopsis resulting in heritable progeny.

    PubMed

    Schiml, Simon; Fauser, Friedrich; Puchta, Holger

    2014-12-01

    The CRISPR/Cas nuclease is becoming a major tool for targeted mutagenesis in eukaryotes by inducing double-strand breaks (DSBs) at pre-selected genomic sites that are repaired by non-homologous end joining (NHEJ) in an error-prone way. In plants, it could be demonstrated that the Cas9 nuclease is able to induce heritable mutations in Arabidopsis thaliana and rice. Gene targeting (GT) by homologous recombination (HR) can also be induced by DSBs. Using a natural nuclease and marker genes, we previously developed an in planta GT strategy in which both a targeting vector and targeting locus are activated simultaneously via DSB induction during plant development. Here, we demonstrate that this strategy can be used for natural genes by CRISPR/Cas-mediated DSB induction. We were able to integrate a resistance cassette into the ADH1 locus of A. thaliana via HR. Heritable events were identified using a PCR-based genotyping approach, characterised by Southern blotting and confirmed on the sequence level. A major concern is the specificity of the CRISPR/Cas nucleases. Off-target effects might be avoided using two adjacent sgRNA target sequences to guide the Cas9 nickase to each of the two DNA strands, resulting in the formation of a DSB. By amplicon deep sequencing, we demonstrate that this Cas9 paired nickase strategy has a mutagenic potential comparable with that of the nuclease, while the resulting mutations are mostly deletions. We also demonstrate the stable inheritance of such mutations in A. thaliana. PMID:25327456

  4. In planta assessment of the role of thioredoxin h proteins in the regulation of S-locus receptor kinase signaling in transgenic Arabidopsis.

    PubMed

    Yamamoto, Masaya; Nasrallah, June B

    2013-11-01

    The self-incompatibility (SI) response of the Brassicaceae is mediated by allele-specific interaction between the stigma-localized S-locus receptor kinase (SRK) and its ligand, the pollen coat-localized S-locus cysteine-rich protein (SCR). Based on work in Brassica spp., the thioredoxin h-like proteins THL1 and THL2, which interact with SRK, have been proposed to function as oxidoreductases that negatively regulate SRK catalytic activity. By preventing the spontaneous activation of SRK in the absence of SCR ligand, these thioredoxins are thought to be essential for the success of cross pollinations in self-incompatible plants. However, the in planta role of thioredoxins in the regulation of SI signaling has not been conclusively demonstrated. Here, we addressed this issue using Arabidopsis thaliana plants transformed with the SRKb-SCRb gene pair isolated from self-incompatible Arabidopsis lyrata. These plants express an intense SI response, allowing us to exploit the extensive tools and resources available in A. thaliana for analysis of SI signaling. To test the hypothesis that SRK is redox regulated by thioredoxin h, we expressed a mutant form of SRKb lacking a transmembrane-localized cysteine residue thought to be essential for the SRK-thioredoxin h interaction. We also analyzed transfer DNA insertion mutants in the A. thaliana orthologs of THL1 and THL2. In neither case did we observe an effect on the pollination responses of SRKb-expressing stigmas toward incompatible or compatible pollen. Our results are consistent with the conclusion that, contrary to their proposed role, thioredoxin h proteins are not required to prevent the spontaneous activation of SRK in the A. thaliana stigma. PMID:24077073

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

    PubMed

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

    2014-10-01

    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

  6. Endogenous silencing of Puccinia triticina pathogenicity genes through in planta-expressed sequences leads to the suppression of rust diseases on wheat.

    PubMed

    Panwar, Vinay; McCallum, Brent; Bakkeren, Guus

    2013-02-01

    Rust fungi are destructive plant pathogens. The draft genomes of several wheat-infecting species have been released and potential pathogenicity genes identified through comparative analyses to fungal pathogens that are amenable to genetic manipulation. Functional gene analysis tools are needed to understand the infection process of these obligate parasites and to confirm whether predicted pathogenicity genes could become targets for disease control. We have modified an Agrobacterium tumefaciens-mediated in planta-induced transient gene silencing (PITGS) assay for use in Triticum spp. (wheat), and used this assay to target predicted wheat leaf rust fungus, Puccinia triticina (Pt) pathogenicity genes, a MAP kinase (PtMAPK1), a cyclophilin (PtCYC1) and calcineurin B (PtCNB), to analyze their roles in disease. Agroinfiltration effectively delivered hairpin silencing constructs in wheat, leading to the generation of fungal gene-specific siRNA molecules in infiltrated leaves, and resulting in up to 70% reduction in transcription of the endogenous target genes in superinfected Pt. In vivo silencing caused severe disease suppression, compromising fungal growth and sporulation, as viewed by confocal microscopy and measured by reductions in fungal biomass and emergence of uredinia. Interestingly, using the same gene constructs, suppression of infection by Puccinia graminis and Puccinia striiformis was also achieved. Our results show that A. tumefaciens-mediated PITGS can be used as a reverse-genetics tool to discover gene function in rust fungi. This proof-of-concept study indicates that the targeted fungal transcripts might be important in pathogenesis, and could potentially be used as promising targets for developing RNA interference-based resistance against rust fungi. PMID:23110316

  7. L'NERGIE D'INTERACTION DE PAIRE ENTRE IONS DANS SEPT MTAUX NORMAUX

    E-print Network

    Paris-Sud XI, Université de

    , les ions interagissent par l'interm6diaire de forces électrostatiques, et 1'6nergie correspondante s'exprime comme une somme d'6nergie d'interaction entre paire d'ions. Mais il n'y avait aucune raison de penser'etre un op6rateur, n'est qu'un simple potentiel. En particulier, nous avions indique que cette 6nergie

  8. La différence épidémiologique des hémorragies digestives hautes entre les hommes et les femmes

    PubMed Central

    El Mekkaoui, Amine; Saâda, Kaoutar; Mellouki, Ihssane; El Yousfi, Mounia; Aqodad, Nourdin; El Abkari, Mohammed; Ibrahimi, Adil; Benajah, Dafr-Allah

    2012-01-01

    Introduction Des différences épidémiologiques, étiologique voire pronostique des hémorragies digestives hautes (HDH) entre les deux sexes opposés ont été cité par différentes études. Méthodes Nous avons essayé de déceler ces différences à travers une analyse rétrospective nichée sur une étude prospective sur les hémorragies digestives hautes ayant inclus 945 patients. Résultats Six cents trente-sept patients étaient des hommes (67,4% Vs 32,6%). Un antécédent d'HDH était trouvé chez 24,2% des cas sans différence significative entre les deux sexes. L'âge de survenue de l'hémorragie était plus élevé chez les femmes que chez les hommes : 51,5 ans ± 18,8 Vs 47,8 ans ± 18,3 (p : 0,003). Les étiologies de l'HDH étaient différentes entre les deux sexes. Alors que l'hémorragie liée à l'HTP était la première cause chez la femme (38 % Vs 23,5 % chez l'homme, p<0,0001), c'est la pathologie ulcéreuse qui venait en premier chez l'homme (62 % Vs 36,7 % chez la femme, p<0,0001). Un besoin transfusionnel était noté chez 42,4 % des patients de sexe masculin contre 35,4 % des patientes avec un p = 0,03. Le taux de récidive et de décès global étaient de 7,5 % et de 5,7 % des cas respectivement, sans différence significative entre les deux sexes. Conclusion L'étude trouve un profil épidémiologique, clinique et étiologique différent selon le sexe des patients. PMID:23077715

  9. Educação, antecedentes familiares e desigualdade de renda entre os grupos raciais no Brasil

    Microsoft Academic Search

    Omar Arias; Gustavo Yamada; Luis Tejerina

    2002-01-01

    O presente estudo combina dados da Pesquisa Nacional por Amostra de Domicilios com registros administrativos anuais sobre a proporção professor\\/aluno, abrangendo o período 1940-90, para examinar o papel da raça, antecedentes familiares e educação (em termos de quantidade e qualidade) ao explicar a desigualdade de rendimentos entre brancos e a população negro-descendente (pretos e pardos) no Brasil. Avaliamos as equações

  10. Relation entre les caractéristiques des table-bancs et les mesures anthropométriques des écoliers au Benin

    PubMed Central

    Falola, Stève Marjelin; Gouthon, Polycarpe; Falola, Jean-Marie; Fiogbe, Michel Armand; Nigan, Issiako Bio

    2014-01-01

    Introduction Le mobilier scolaire et la posture assise en classe sont souvent impliqués dans l'apparition des douleurs rachidiennes, influant de fait sur la qualité des tâches réalisées par les apprenants. Aucune étude n'a encore vérifié le degré d'adéquation entre les caractéristiques du mobilier et celles des écoliers au Bénin. L'objectif de cette étude transversale est donc de déterminer la relation entre les dimensions des table-bancs utilisées en classe et les mesures anthropométriques des écoliers au Bénin. Methods Elle a été réalisée avec un échantillon probabiliste de 678 écoliers, âgés de 4 à 17 ans. Les mesures anthropométriques des écoliers et les mensurations relatives aux longueurs, largeurs et hauteurs des table-bancs ont été mesurées, puis intégrées aux équations proposées dans la littérature. Les pourcentages des valeurs situées hors des limitesacceptables, dérivées de l'application des équations ont été calculés. Results La largeur et la hauteur des table-bancs utilisées par les écoliers étaient plus élevées (p < 0,05) que les valeurs de référence recommandées par les structures officielles de contrôle et de production des mobiliers scolaires au Bénin. Quel que soit le sexe, il y avait une inadéquation entre la largeur du banc et la longueur fesse-poplité, puis entre la hauteur de la table et la distance coude-bancdes écoliers. Conclusion Les résultats suggèrent de prendre en compte l’évolution des mesures anthropométriques des écoliers dans la confection des table-bancs, afin de promouvoir de bonnes postures assises en classe et de réduire le risque de troubles du rachis. PMID:25317232

  11. BEMS-Assisted Seasonal Functional Performance Testing in the Initial Commissioning of Kista Entre and Katsan

    E-print Network

    Isakson, P.; Wetterstrom, P.; Carling, P.

    2004-01-01

    BEMS-ASSISTED SEASONAL FUNCTIONAL PERFORMANCE TESTING IN THE INITIAL COMMISSIONING OF KISTA ENTR? AND KATSAN Per Isakson*, Per Wetterstr?m** and P?r Carling*** * Building Sciences KTH, Stockholm SWEDEN. per.isakson@byv.kth.se ** Vasakronan..., Stockholm, SWEDEN. per.wetterstrom@vasakronan.se *** ?F-Installation, Stockholm, SWEDEN. par.carling@af.se This paper reports on some concrete experiences from using intensive trending and visualization in the evaluation of the performance...

  12. Kingdom Plantae Douglas firs (left);

    E-print Network

    Brown, Christopher A.

    -living and photosynthetic #12;5 Clockwise from upper left: a fern; a club moss; a whisk fern; a horsetail Fern Life Cycle major groups... True mosses (~14,000 species) Liverworts (~8500 species) Hornworts (~200 species) Group I: Non-Vascular Plants Examples of Mosses #12;4 Liverworts and Hornworts Sporophytes of a moss Group

  13. ds le dbut du dernier stade larvaire. La formation d'amas d'oogonies, relis entre

    E-print Network

    Paris-Sud XI, Université de

    dès le début du dernier stade larvaire. La formation d'amas d'oogonies, reliés entre eux par de larvaire sur l'organi- sation du cytosquelette des oogonies pri- maires, tandis que les hormones stéroïdes

  14. 152 N. PINO ET L. CHIOFALO. -CORRLATION ENTRE SCHMA DE STRUCTURE DE LA CASINE )( DE V~CHE [15

    E-print Network

    Boyer, Edmond

    caséine x caséino-glycopeptide x -----~~ (1) La totalité des acides aminés soufrés, aromatiques et'une liaison ester entre la paracaséine x et le caséino-glycopeptide sera discutée plus loin. (A suivre

  15. CONFRONTATION ENTRE MODLES ET DONNES RELLES POUR LA STRUCTURE SPATIALE DES MOLCULES D'ADN PAR LE BIAIS

    E-print Network

    Paris-Sud XI, Université de

    CONFRONTATION ENTRE MOD�LES ET DONN�ES R�ELLES POUR LA STRUCTURE SPATIALE DES MOL�CULES D'ADN PAR'analyse des séquences. Les propriétés géométriques de l'ADN sont très peu étudiées, en particulier pour de grands segments d'ADN. C'est justement sur ce dernier verrou que la synergie entre informaticiens et

  16. Universidad Nacional Autnoma de Mxico Coordinacin de Universidad Abierta y Educacin a Distancia

    E-print Network

    Islas, León

    responsabilidad, conductas saludables y de riesgo, consumo de tabaco, alcohol y otras drogas), al ambiente que la ausencia de ésta puede generar conductas de riesgo, como fumar, beber, hábitos de alimentación ambientes de apoyo. Objetivo El plan de la Especialización en Promoción de Salud y Prevención del

  17. [Agrobacterium-mediated sunflower transformation (Helianthus annuus L.) in vitro and in Planta using strain of LBA4404 harboring binary vector pBi2E with dsRNA-suppressor proline dehydrogenase gene].

    PubMed

    Tishchenko, E N; Komisarenko, A G; Mikhal'skaia, S I; Sergeeva, L E; Adamenko, N I; Morgun, B V; Kochetov, A V

    2014-01-01

    To estimate the efficiency of proline dehydrogenase gene suppression towards increasing of sunflower (Helianthus annuus L.) tolerance level to water deficit and salinity, we employed strain LBA4404 harboring pBi2E with double-stranded RNA-suppressor, which were prepared on basis arabidopsis ProDH1 gene. The techniques of Agrobacterium-mediated transformation in vitro and in planta during fertilization sunflower have been proposed. There was shown the genotype-depended integration of T-DNA in sunflower genome. PCR-analysis showed that ProDH1 presents in genome of inbred lines transformed in planta, as well as in T1- and T2-generations. In trans-genic regenerants the essential accumulation of free L-proline during early stages of in vitro cultivation under normal conditions was shown. There was established the essential accumulation of free proline in transgenic regenerants during cultivation under lethal stress pressure (0.4 M mannitol and 2.0% sea water salts) and its decline upon the recovery period. These data are declared about effectiveness of suppression of sunflower ProDH and gene participation in processes connected with osmotolerance. PMID:25184200

  18. An Environmental Management Model of Thermal Waters in Entre Ríos Province, Argentina

    NASA Astrophysics Data System (ADS)

    Pablo, Mársico Daniel; Luís, Díaz Eduardo; Ivana, Zecca; Oscar, Dallacosta; Antonio, Paz-González

    2015-04-01

    Deep exploratory drillings, i.e. those with more than 500 meters depth, have been performed in the Entre Ríos province, Argentina, in order to ascertain the presence of thermal water. Drilling began in 1994, and until now there have been 18 polls with very variable results in terms of mineralization, resource flow, and temperature. The aim of this study was to present a management model, which should allow operators of thermal complexes to further develop procedures for safeguarding the biodiversity of the ecosystems involved, both during exploration and exploitation activities. The environmental management Plan proposed is constituted by a set of technical procedures that are formulated and should be performed during the stages of exploration and exploitation of the resource, and consists of: environmental monitoring, environmental audit, public information and contingency programs. This Plan describes the measures and proposals aimed at protecting environmental quality in the area of influence of a thermal complex project, ensuring that its execution remains environmentally responsibly, and allowing implementation of specific actions to prevent or correct environmental impacts, as predicted in the evaluation of the Environmental Program. The audit of environmental impact includes and takes into account natural factors, such as water, soil, atmosphere, flora and fauna, and also cultural factors. The technical audit Plan was prepared in order to get a systematic structure and organization of the verification process, and also with regard to document the degree of implementation of the proposed mitigation measures. Finally, an environmental contingency program was implemented, and its objective was to consider the safeguarding of life and its natural environment. Thus, a guide has been developed with the main actions to be taken on a contingency, since forecast increases the efficiency of the response. The methodology developed here was adopted as the procedure required by the authority for the application and regulation of the hydro-geo-thermal resources of the province of Entre Ríos, and it is also useful for the control and protection of the resource.

  19. Relao entre os desastres naturais e as anomalias de precipitao para a regio Sul do Daniela Wancura Barbieri 1

    E-print Network

    Relação entre os desastres naturais e as anomalias de precipitação para a região Sul do Brasil da Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brasil daniela Postal 5021 - CEP: 97110-970, Santa Maria, RS, Brasil {camila.ferreira; silvia.saito; tania.sausen; marco

  20. tude des interactions d'adsorption-dsorption entre le grain et les atmosphres enrichies en CO2,

    E-print Network

    Paris-Sud XI, Université de

    rate and variations in gas adsorption by the grain (figs 1-4). CO2 adsorption was active over the first by CO2 enrichment are presented for damp paddy storage under tropical conditions. gas adsorption / paddyZoologie Étude des interactions d'adsorption-désorption entre le grain et les atmosphères enrichies

  1. RELATION ENTRE LES CONCENTRATIONS DU CHLORE ET DU CUIVRE DANS ZnS : Cu, Cl Par T. B. TOMLINSON,

    E-print Network

    Paris-Sud XI, Université de

    634 RELATION ENTRE LES CONCENTRATIONS DU CHLORE ET DU CUIVRE DANS ZnS : Cu, Cl Par T. B. TOMLINSON, PAGE 634. Une série de luminophores ZnS(Cu, CI) en poudre ont été.préparés tous avec la même quantité polycristalline de ZnS(Cu, CI) avec une gradation continue de la concentration du cuivre. Une telle couche est

  2. Diffrence entre races bovines dans le dracinement de l'herbe pture P. LE NEINDRE R. KILGOUR

    E-print Network

    Paris-Sud XI, Université de

    Différence entre races bovines dans le déracinement de l'herbe pâturée P. LE NEINDRE R. KILGOUR également d'un déra- cinement de l'herbe, tout spécialement du ray-grass anglais, qui entraîne la mort de la facteurs. Enfin Boswell (1977) observe que les bovins déracinent plus l'herbe que les ovins. Nos résultats

  3. Relaciones a largo plazo entre compradores y proveedores: la importancia de la tecnología en el desarrollo de la confianza

    Microsoft Academic Search

    José Roberto Concha; Angela Solikova

    2000-01-01

    Las tendencias e investigaciones más recientes muestran claramente que los mercados industriales han experimentado un cambio significativo. Los proveedores y clientes cambiaron su orientación y hoy están más enfocados hacia el mercadeo de las relaciones que al de las transacciones. Puesto que el mercadeo de las relaciones está estrechamente conectado con el largo plazo, la confianza entre las partes juega

  4. L'valuation des services publics par la satisfaction des usagers, entre fonction d'apprentissage et

    E-print Network

    Paris-Sud XI, Université de

    contexte de gouvernance. La logique de discipline apparaît ainsi liée à la fonction cognitive d- 1 - L'évaluation des services publics par la satisfaction des usagers, entre fonction d of discipline appears connected by the cognitive approach of apprenticeship of public services

  5. Relation entre l'excrtion urinaire d'allantoine et le flux duodnal d'acide ribonuclique

    E-print Network

    Paris-Sud XI, Université de

    Relation entre l'excrétion urinaire d'allantoine et le flux duodénal d'acide ribonucléique F Vandceuvre, France. Summary. The relationship between allantoin excretion and duodenal RNA flows was studied. Between 73 and 85 % of the RNA disappeared in the gut. Urinary allantoin nitro- gen represented between 32

  6. La computacin del siglo 21: entre lo natural y lo artificial de la inteligencia y la vida

    E-print Network

    Alvarado, Matías

    hombre más joven es de 20 años de edad. Alrededor del 65% (unos 33) menores de 35 años. Procedentes de 16:2.) Autores de entre 15 a 70 años de edad. El autor más joven es mujer y el menos joven es hombre. En autor

  7. L'ANTHROPOLOGIE ET LE POLITIQUE, LES PREMISSES. LES RELATIONS ENTRE FRANZ BOAS ET PAUL RIVET (1919-1942)

    E-print Network

    Paris-Sud XI, Université de

    1 L'ANTHROPOLOGIE ET LE POLITIQUE, LES PREMISSES. LES RELATIONS ENTRE FRANZ BOAS ET PAUL RIVET-IIAC) ______________________________________________________________________ Résumé : Nouée au retour à la vie civile, en 1919, la correspondance Franz Boas/Paul Rivet (129 lettres moment du décès de Franz Boas, au moment où ce dernier lui redit l'impérieuse nécessité de combattre le

  8. Cdigos UNESCO: Frecuencia del curso: FUENTES PARA EL ESTUDIO DE LAS RELACIONES ENTRE CRISTIANOS, JUDOS Y MUSULMANES EN LA EDAD

    E-print Network

    Códigos UNESCO: Frecuencia del curso: FUENTES PARA EL ESTUDIO DE LAS RELACIONES ENTRE CRISTIANOS, JUDÍOS Y MUSULMANES EN LA EDAD MEDIA: ARTE, FILOLOGÍA, HISTORIA Sede del curso: Horas Lectivas: Nº previsto de alumnos: Requisitos de admisión: Entidades que patrocinan el curso: Año en el que se impartió

  9. La loi REOM contre la vie chre en outre-mer : Une construction difficile entre concurrence et administration des prix

    E-print Network

    Paris-Sud XI, Université de

    1 La loi REOM contre la vie chère en outre-mer : Une construction difficile entre concurrence et. 35, Avril-Juin, pp. 131-140, 2013) La lutte contre la vie chère en outre-mer se matérialise la vie en outre-mer est sensiblement plus élevé que celui que supportent nos compatriotes de

  10. Relations entre certaines proprits du bois et les fentes des arbres sur pied chez Abies grandis (Lindl.)

    E-print Network

    Boyer, Edmond

    Relations entre certaines propriétés du bois et les fentes des arbres sur pied chez Abies grandis'étude a porté sur un échantillonnage de 48 Abies grandis âgés de 40 ans environ comportant 24 arbres fendus et, fibre torse, Abies grandis. #12;#12;1. Introduction 1.1. Généralités Le défaut des fentes dites de

  11. Effect of different levels of technology upon expected yields, costs, and returns for major crops in Diamante Departamento, Entre Rios province, Argentina 

    E-print Network

    Albarracin, Ernesto Oscar

    1970-01-01

    at different price levels for advanced manage?&ent pra-tices for f lax~ yield: 1 y ZOC kilograms pe hectare, Di ama~ntc Depart~. . ento, Entre Pfos~ ntina, 1969. . . . . . . . . . . . . . 111 Lo&. : management practices for grain. sorghum: tra tor...: estimated costs pe' hectare~ Dia. -ante D partamento, Entre Rfos, llrgentina, 1969 j&ve age management practices for grain sorghua: estimated costs per h ctare, Diamante Departs:. ento, Entre Pfos, j& geo&isa~ 1969 r ~ ~ ~ ~ ~ 1. 17 118 4...

  12. Etude des interactions entre services des cosystmes Rives, F.; Antona, M.; Aubert, S.;Carrire, S.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N.

    E-print Network

    Paris-Sud XI, Université de

    Etude des interactions entre services des écosystèmes Rives, F.; Antona, M.; Aubert, S.;Carrière, S UN SOCIO-ECOSYSTEME AU NIGER Fanny RIVES1 , Martine ANTONA1 , Sigrid AUBERT1 , Stéphanie CARRIERE2 #12;Etude des interactions entre services des écosystèmes Rives, F.; Antona, M.; Aubert, S

  13. Effet photoplastique dans ZnS de structure blende entre 300 et 620 K J. J. Couderc, C. Levade et A. Kara

    E-print Network

    Paris-Sud XI, Université de

    1129 Effet photoplastique dans ZnS de structure blende entre 300 et 620 K J. J. Couderc, C. Levade naturels de ZnS entre 300 et 620 K dans le noir et sous illumination U.V. pour étudier l in the [110] direction have been performed on ZnS natural single crystals between 300 and 620 K in the dark

  14. Rfrence complte de l'article Vincent Geisser et ric Gobe, Le prsident Ben Ali entre les jeux de coteries et l'chance

    E-print Network

    Paris-Sud XI, Université de

    1 Référence complète de l'article Vincent Geisser et Éric Gobe, « Le président Ben Ali entre les, CNRS Editions, 2005, p. 291-320. CHRONIQUE POLITIQUE TUNISIE Le président Ben Ali entre les jeux de). Destiné à préparer la réélection certaine du président Ben Ali en 2004, il a également été l'occasion d

  15. Loisirs et santé mentale: les relations entre la motivation pour la pratique des loisirs et le bien-être psychologique

    Microsoft Academic Search

    LUC G. PELLETIER; ROBERT J. VALLERAND; ISABELLE GREEN-DEMERS; NATHALIE M. BRIÈRE; MARC R. BLAIS

    1995-01-01

    L'objectif principal de cet article est d'érudier les relations entre les différentes formes de régularisation de la motivation envers les loisirs et le bien-être psychologique. La thébrie de l'autodétermination proposée par Deci et Ryan (1985) constitue un cadre d'analyse unique permettant la réalisation de cet objectif. Selon Deci et Ryan (1985), il existerait différents types de motivation qui se distingueraient

  16. Relação entre diferentes índices de atividade física e preditores de adiposidade em adolescentes de ambos os sexos

    Microsoft Academic Search

    Luís Paulo Gomes Mascarenhas; Fabiano de Macedo Salgueirosa; Gabriel Ferreira Nunes; Paulo Ângelo Martins; Antonio Stabelini Neto; Wagner de Campos

    2005-01-01

    RESUMO Objetivo: Determinar a relação entre diferentes índices de ativi- dade física e preditores de adiposidade em adolescentes de am- bos os sexos. Métodos: Foram avaliadas 111 crianças (57 meni- nos e 54 meninas), com idade média de 11,62 ± 0,72. Como preditores de adiposidade foram determinados o IMC, percenta- gem de gordura corporal e a relação cintura\\/quadril (RCQ). Quanto

  17. Les bourses de thse Certains d'entre vous se souviennent des galres rencontres, lorsqu'en DEA, on recherche

    E-print Network

    Gesbert, David

    Les bourses de thèse Certains d'entre vous se souviennent des galères rencontrées, lorsqu'en DEA qui permettra aux DEA de cette année de déjà avoir une idée et de savoir quel organisme interroger attribuées par l'Ecole Doctorale aux meilleurs candidats après examen de leurs dossiers (les résultats du DEA

  18. RELACIÓN ENTRE LA INTELIGENCIA EMOCIONAL Y EL RENDIMIENTO ACADÉMICO UNIVERSITARIO EN EL CONTEXTO DEL ESPACIO EUROPEO DE EDUCACIÓN SUPERIOR

    Microsoft Academic Search

    José Alberto Martínez González

    2010-01-01

    La presente investigación tiene como objetivo determinar la relación existente entre la inteligencia emocional (competencia emocional auto-percibida) y el rendimiento académico de 287 estudiantes universitarios de un centro que está plenamente adaptado al Espacio Europeo de Educación Superior (EEES). Se han aplicado la escala TMMS-24 y las escalas TIE-76 y TIE-34, diseñadas ad hoc. El rendimiento académico de los alumnos

  19. High-throughput in planta expression screening identifies a class II ethylene-responsive element binding factor-like protein that regulates plant cell death and non-host resistance.

    PubMed

    Nasir, Khairun Hisam Bin; Takahashi, Yoshihiro; Ito, Akiko; Saitoh, Hiromasa; Matsumura, Hideo; Kanzaki, Hiroyuki; Shimizu, Takeshi; Ito, Minako; Fujisawa, Shizuko; Sharma, Prakash C; Ohme-Takagi, Masaru; Kamoun, Sophien; Terauchi, Ryohei

    2005-08-01

    We performed high-throughput screening using the potato virus X (PVX) system to overexpress Nicotiana benthamiana genes in planta and identify positive regulators of cell death. This screening identified NbCD1, a novel class II ethylene-responsive element binding factor (ERF), as a potent inducer of the hypersensitive response (HR)-like cell death. NbCD1 expression was induced by treatments with INF1 elicitor and a non-host pathogen Pseudomonas cichorii. NbCD1 exhibited transcriptional repressor activity through its EAR motif, and this motif was necessary for NbCD1 to cause cell death. We identified 58 genes that displayed altered transcription following NbCD1 overexpression. NbCD1 overexpression downregulated the expression of HSR203, a negative regulator of hypersensitive death. Conditional expression of NbCD1 in Arabidopsis also caused cell death, indicating that NbCD1 downstream cascades are conserved in dicot plants. To further confirm the role of NbCD1 in defense, we used virus-induced gene silencing to demonstrate that NbCD1 is required for non-host resistance of N. benthamiana to the bacterial pathogen P. cichorii. Our data point to a model of transcriptional regulatory cascades. NbCD1 positively regulates cell death and contributes to non-host resistance, possibly by downregulating the expression of other defense response genes. PMID:16098104

  20. An updated model for nitrate uptake modelling in plants. I. Functional component: cross-combination of flow–force interpretation of nitrate uptake isotherms, and environmental and in planta regulation of nitrate influx

    PubMed Central

    Le Deunff, Erwan; Malagoli, Philippe

    2014-01-01

    Background and Aims In spite of major breakthroughs in the last three decades in the identification of root nitrate uptake transporters in plants and the associated regulation of nitrate transport activities, a simplified and operational modelling approach for nitrate uptake is still lacking. This is due mainly to the difficulty in linking the various regulations of nitrate transport that act at different levels of time and on different spatial scales. Methods A cross-combination of a Flow–Force approach applied to nitrate influx isotherms and experimentally determined environmental and in planta regulation is used to model nitrate in oilseed rape, Brassica napus. In contrast to ‘Enzyme–Substrate’ interpretations, a Flow–Force modelling approach considers the root as a single catalytic structure and does not infer hypothetical cellular processes among nitrate transporter activities across cellular layers in the mature roots. In addition, this approach accounts for the driving force on ion transport based on the gradient of electrochemical potential, which is more appropriate from a thermodynamic viewpoint. Key Results and Conclusions Use of a Flow–Force formalism on nitrate influx isotherms leads to the development of a new conceptual mechanistic basis to model more accurately N uptake by a winter oilseed rape crop under field conditions during the whole growth cycle. This forms the functional component of a proposed new structure–function mechanistic model of N uptake. PMID:24638820

  1. Relations de dpendance entre la configuration d'un accident VL-piton et le droulement du choc Relationships between the configuration of a pedestrian accident and its continuity

    E-print Network

    Boyer, Edmond

    , le coefficient de frottement entre le piéton et le sol, la modélisation du contact entre le piéton et International Francophone du GERI COPIE, Canada (2013)" #12;1. INTRODUCTION La compréhension des phénomènes mis

  2. Déclin de l'emploi industriel et tertiarisation accrue. L'emploi par secteur d'activité entre 1982 et 1990

    Microsoft Academic Search

    Magda Tomasini; Sylvie Dumartin

    1993-01-01

    [fre] Déclin de l'emploi industriel et tertiarisation accrue L'emploi par secteur d'activité entre 1982 et 1990 . Entre 1 982 et 1 990, l'économie française crée près de 800 000 emplois. Cette progression recouvre, en moyenne par an, des évolutions de sens opposés : créations d'emplois dans le tertiaire (+ 240 000), disparitions dans l'industrie (- 64 000), l'agriculture (-

  3. In Planta Processing and Glycosylation of a Nematode CLAVATA3/ENDOSPERM SURROUNDING REGION-Like Effector and Its Interaction with a Host CLAVATA2-Like Receptor to Promote Parasitism1[OPEN

    PubMed Central

    Chen, Shiyan; Lang, Ping; Chronis, Demosthenis; Zhang, Sheng; De Jong, Walter S.; Mitchum, Melissa G.

    2015-01-01

    Like other biotrophic plant pathogens, plant-parasitic nematodes secrete effector proteins into host cells to facilitate infection. Effector proteins that mimic plant CLAVATA3/ENDOSPERM SURROUNDING REGION-related (CLE) proteins have been identified in several cyst nematodes, including the potato cyst nematode (PCN); however, the mechanistic details of this cross-kingdom mimicry are poorly understood. Plant CLEs are posttranslationally modified and proteolytically processed to function as bioactive ligands critical to various aspects of plant development. Using ectopic expression coupled with nanoliquid chromatography-tandem mass spectrometry analysis, we show that the in planta mature form of proGrCLE1, a multidomain CLE effector secreted by PCN during infection, is a 12-amino acid arabinosylated glycopeptide (named GrCLE1-1Hyp4,7g) with striking structural similarity to mature plant CLE peptides. This glycopeptide is more resistant to hydrolytic degradation and binds with higher affinity to a CLAVATA2-like receptor (StCLV2) from potato (Solanum tuberosum) than its nonglycosylated forms. We further show that StCLV2 is highly up-regulated at nematode infection sites and that transgenic potatoes with reduced StCLV2 expression are less susceptible to PCN infection, indicating that interference of the CLV2-mediated signaling pathway confers nematode resistance in crop plants. These results strongly suggest that phytonematodes have evolved to utilize host cellular posttranslational modification and processing machinery for the activation of CLE effectors following secretion into plant cells and highlight the significance of arabinosylation in regulating nematode CLE effector activity. Our finding also provides evidence that multidomain CLEs are modified and processed similarly to single-domain CLEs, adding new insight into CLE maturation in plants. PMID:25416475

  4. DIRECCIN DE PLANTA FSICA VICERRECTORADO ADMINISTRATIVO

    E-print Network

    Vásquez, Carlos

    . CON BALASTRO ELECTRONICO MULTIVOLTAJE CON REJILLA SEMIESPECULAR Y SOCATES DE SEGURIDAD. (A ser FLUORESCENTE SUPERFICIAL (120X60cm) CON TUBO FLUORESCENTE 3X32W TIPO T8. CON BALASTRO ELECTRONICO MULTIVOLTAJE

  5. Bancos de Genes de Plantas: Seguridad Alimenticia

    NSDL National Science Digital Library

    Geoffrey C. Hawtin and Jeremy Cherfas (International Plant Genetic Resources Institute; )

    2003-04-01

    The issue-focused, peer-reviewed article shows how genebanks are like an insurance policy for the future of agriculture, for they: conserve the diversity of plant species, offer resources for breeding of hardier crop varieties, provide food solutions in times of disaster, and safeguard food supplies for future generations.

  6. Simple quantification of in planta fungal biomass.

    PubMed

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

    2014-01-01

    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

  7. EL PORTAFOLIO VIRTUAL COMO ESTRATEGIA DIDACTICO-METODOLÓGICA Y DE EVALUACIÓN EN LA ENSEÑANZA UNIVERSITARIA SEMIPRESENCIAL Y A DISTANCIA

    Microsoft Academic Search

    Ramón Pérez Pérez

    Resumo: Na atualidade a educação superior se vê submetida a numerosos processos de mudança que vêm determinados por múltiplas variáveis que a fazem mais complexa, adicionando assim complexidade os processo que devem acontecer no sala de aula com relação ao que cabe esperar tanto do corpo discente como do próprio professorado. A globalização, a competitividade, as exigências dos sistemas de

  8. Complementariedad en las modalidades educativas: presencial y a distancia Complementariness in learning trends: Classroom-based and distance

    Microsoft Academic Search

    Carolina Serrano Barquín

    Resumen: Actualmente la educación, transcurre por un proceso de transformación, este transcurso o metamorfosis resulta indispensable antes de aspirar a una complementariedad formativa y por ésta, habremos de referirnos tanto a la epistémica (interdisciplinariedad), técnico-administrativa (soporte tecnológico, normativo y administrativo) y humanística (axiológica) como a la complementariedad de modalidades educativas. Se podría mencionar que existen etapas de desarrollo y vinculación;

  9. Appels conjoint propositions et annuel dans le cadre de l'Accord-Cadre entre le CNRS FRANCE et le CNRST MAROC

    E-print Network

    van Tiggelen, Bart

    CNRST MAROC L'Appel à propositions relatif au programme de « Convention d'échanges » établi entre le CNRS France et le CNRST Maroc est ouvert chaque année : du 1er juin au 15 septembre de chaque année. Ce par an (permettant de financer 1 voyage vers le Maroc et 3 semaines de séjour de partenaires marocains

  10. Les Oracles chaldaques entre idologie et critique (XVe/XVIIe s.) La longvit des Oracles chaldaques est impressionnante : texte de rfrence religieux, produit

    E-print Network

    Paris-Sud XI, Université de

    1 Les Oracles chaldaïques entre idéologie et critique (XVe/XVIIe s.) La longévité des Oracles la Bible, ces Oracles commencent à être abordés dans une perspective historique et critique. Mais à partir du XVe siècle, il est clair que le retour des Oracles chaldaïques est souvent au service d

  11. Etude des interactions entre services des cosystmes Rives, F.; Antona, M.; Aubert, S.;Carrire, S.;Ichaou, A.; Montagne, P; Peltier R.; Sibelet, N.

    E-print Network

    Paris-Sud XI, Université de

    Etude des interactions entre services des écosystèmes Rives, F.; Antona, M.; Aubert, S.;Carrière, S UN SOCIO-ECOSYSTEME AU NIGER Fanny RIVES1 , Martine ANTONA2 , Sigrid AUBERT3 , Stéphanie CARRIERE4 international de Baillarguet. 34398 Montpellier Cedex 5 ­ France sigrid.aubert@cirad.fr 4 Unité de recherche

  12. Un isomorphisme motivique entre deux vari#t#s homog#nes projectives sous l'action d'un groupe de

    E-print Network

    Un isomorphisme motivique entre deux vari#t#s homog#nes projectives sous l est d'#tudier X (ff1) et X (ff2), les vari#t* *#s homog#nes pro- jectives associ#es # chacune#t#s homog#nes projectives . . . . . . . . . . . . . . . . . . . * *. . . . . . . 7 3.2 Foncteurs

  13. Flux n 66/67 Octobre 2006 -Mars 2007 BRICE GRUET, La rue Rome, miroir de la ville. Entre l'motion et la norme

    E-print Network

    Paris-Sud XI, Université de

    Flux n° 66/67 Octobre 2006 - Mars 2007 p.174 BRICE GRUET, La rue à Rome, miroir de la ville. Entre 1950, des plans régulateurs du XIXe siècle aux maquettes de la Rome de Mussolini. L'impression que ambition que de s'immiscer dans la cohorte des voyageurs prétendant décrire Rome avec esprit. Car l

  14. Absence de corrlation entre la masse et l'activit enzymatique de deux enzymes majori-taires (lipase et trypsine) de diffrents sucs pancratiques humains. Incidence sur les

    E-print Network

    Paris-Sud XI, Université de

    Absence de corrélation entre la masse et l'activité enzymatique de deux enzymes majori- taires, Grossman et Ivy (1 ) le phénomène d'adapta- tion des enzymes pancréatiques au régime a été clairement méthodologie pré- cise et jusqu'à présent les variations des enzymes pancréatiques sous l'influence de divers

  15. LE CONTROLE CIVIL ET LE POUVOIR EXECUTIFAU JAPON Essai sur les rapports entre civils et militaires dans le Japon d'aprs guerre

    E-print Network

    Paris-Sud XI, Université de

    1 LE « CONTROLE CIVIL » ET LE POUVOIR EXECUTIFAU JAPON Essai sur les rapports entre civils et journalistes : « je suis un béotien en matière de sécurité. C'est l'essence même du contrôle civil ». Gaffe ou. Ichikawa n'avait pas pris la mesure de l'importance du principe de contrôle ou de prépondérance civile. Le

  16. COMPARACIÓN ENTRE LA TERAPIA CONVENCIONAL ODONTOLÓGICA Y SU USO COMBINADO CON LA FISIOTERAPIA Y LA OSTEOPATÍA, EN PACIENTES CON DISFUNCIÓN TEMPOROMANDÍBULAR. \\

    Microsoft Academic Search

    Graciela Carvallo; Maria Fasanella; Sofia Caricote

    RESUMEN Dado que la disfunción temporomandibular es una patología que cursa frecuentemente con, dolor y limitación en la apertura bucal los pacientes afectados reducen su calidad de vida desde el punto de vista social, laboral y familiar. La presente investigación tiene como propósito evaluar comparativamente los alcances terapéuticos entre el tratamiento odontológico convencional y el uso combinado de éste, con

  17. La production de quinoa dans l'altiplano sud de la Bolivie : entre crises et innovations Vassas A. & Vieira Pak M.

    E-print Network

    Boyer, Edmond

    .com Résumé -- L'altiplano sud bolivien est devenu le plus gros exportateur de quinoa (Chenopodium quinoa (Chenopodium quinoa Willd.) in the world. In the last forty years, communities have evolved from subsistenceLa production de quinoa dans l'altiplano sud de la Bolivie : entre crises et innovations Vassas A

  18. LA VISITE AU ZOO Regards sur l'animal sauvage captif au XIXe sicle et dans l'entre-deux-guerres

    E-print Network

    Paris-Sud XI, Université de

    LA VISITE AU ZOO Regards sur l'animal sauvage captif au XIXe siècle et dans l'entre-deux-guerres À mobiles scientifiques initiaux, ces zoos deviennent des vitrines de la nature sauvage pour des populations, Palomba, 1935, p. 67. halshs-00659775,version1-13Jan2012 Manuscrit auteur, publié dans "L'animal sauvage

  19. Análise de dois treinamentos com diferentes durações de pausa entre séries baseadas em normativas previstas para a hipertrofia muscular em indivíduos treinados

    Microsoft Academic Search

    Fernando Vitor Lima; Mauro Heleno Chagas; Erica Fischer; Fernandes Corradi; Gisele Freire da Silva; Brenda Bebiano de Souza; Antônio Moreira; Júnior ARTIGO

    RESUMO Os programas de treinamento na musculação são comumente prescritos baseando-se em normativas de carga de treinamento sugeridas pela literatura. Dentre as normativas, a prescrição da duração da pausa tem variado normalmente de um a três minu- tos. Comparações entre intervalos de pausa de um e três minutos mostram diferenças significativas na resposta hormonal, metabó- lica e no desempenho. Existe

  20. Syria 87 (2010), p. 281 300 Rsum Trois campagnes de fouilles ont t menes entre septembre 2007 et octobre 2009 dans le dit

    E-print Network

    Paris-Sud XI, Université de

    2010-01-01

    Syria 87 (2010), p. 281 à 300 Résumé Trois campagnes de fouilles ont été menées entre septembre of Trajan , a large urban house of Bosra, in southern Syria. The architectural study of this house brings-FOURNET Institut français du Proche-Orient UMIFRÉE 6 (MAE/CNRS) #12;282 Syria 87 (2010)P. PIRAUD

  1. ASOCIACION ENTRE LA CANTIDAD DE ESPACIOS VERDES Y LA PERCEPCION DE SALUD EN LAS COMUNIDADES DEL RIO PIEDRAS, SAN JUAN, PUERTO RICO.

    E-print Network

    Gilbes, Fernando

    ASOCIACION ENTRE LA CANTIDAD DE ESPACIOS VERDES Y LA PERCEPCION DE SALUD EN LAS COMUNIDADES DEL RIO riesgos como la obesidad, el sedentarismo y el estrés. Los espacios verdes pueden ser una alternativa en el proceso de lograr una población más saludable. Estos proveen espacio para realizar actividad

  2. El sistema de información contable del Hospital San Julián de Albacete entre 1838 y 1859. (Accounting information at the Hospital San Julian in Albacete among 1838 and 1859)

    Microsoft Academic Search

    María del Mar López Pérez; Rosario Pérez Morote

    2007-01-01

    En el presente trabajo abordamos el estudio del sistema hospitalario de la provincia de Albacete, concretamente del Hospital de San Julián durante el período comprendido entre 1838 y 1859, cuando su gestión corría a cuenta de la Junta Municipal de Beneficencia. Hemos analizado la contabilidad llevada en dicho establecimiento, basada aún en un sistema de “cargo y data”, a pesar

  3. L'univers des fast-foods Lorsque l'ethnologue entre dans un fast-food, alors se met en place une irrsistible envie de

    E-print Network

    Boyer, Edmond

    L'univers des fast-foods Lorsque l'ethnologue entre dans un fast-food, alors se met en place une dans un fast-food, alors se met en place une irrésistible envie de mesurer l'étendue des enjeux qui y pratique alimentaire des fast-foods est de manière incontournable liée à une certaine culture de la

  4. in : Lachize-Rey, Marc (d.), L'espace physique, entre mathmatiques et philosophie, Collection Penser avec les sciences , EDP-Sciences, Paris, 2006,

    E-print Network

    Boyer, Edmond

    in : Lachièze-Rey, Marc (éd.), L'espace physique, entre mathématiques et philosophie, Collection « Penser avec les sciences », EDP-Sciences, Paris, 2006, p. 41-79. L'espace physique vu du monde quantique : une approche épistémologique Michel PATY X RESUME.- La pensée physique - et, jusqu'à un certain point

  5. JOURNAL DE PHBIQUE Colloque C4, supplment au no 10, Tome 36, Octobre 1975,pageC4-403 COMPARAISON ENTRE LES MCANISMES DE CORROSION

    E-print Network

    Paris-Sud XI, Université de

    corrosion mechanisms and on the intergranular embrittlement by liquid metals are scarce. Based on our own on the metallic interfaces. 1 . Introduction. - Les mécanismes de corrosion ou de fragilisation des métaux par les ENTRE LES MÉCANISMES DE CORROSION ET DE FRAGILISATION INTERGRANULAIRES DES MÉTAUX PAR LES MÉTAUX

  6. L’expression verbale de la douleur chez l’enfant : Comparaison intermodale entre sensation de douleur et manipulation tactile

    PubMed Central

    Bienvenu, Margaux; Jacquet, Denis; Michelutti, Marjolaine; Wood, Chantal

    2011-01-01

    HISTORIQUE: La présente étude se situe dans le contexte de l’expression verbale de la douleur chez l’enfant. Elle porte plus particulièrement sur la dimension qualitative de la sensation de douleur. OBJECTIF: Nous cherchons à repérer les particularités de l’expression verbale relativement à l’aspect qualitatif de la douleur. MÉTHODOLOGIE: La recherche a été menée auprès de 60 patients de quatre à 18 ans ressentant de la douleur, rencontrés dans un hôpital universitaire pédiatrique. Elle confirme en premier lieu l’origine des descripteurs sensoriels de la douleur, qui renvoient aux expériences perceptives passées de l’enfant, non nécessairement liées à la douleur. Ces expériences sont qualifiées de prototypiques, dans la mesure où, bien qu’elles soient liées à des contextes de vie variés, le type de rapport au monde qu’elles provoquent ne varie pas. RÉSULTATS: Dans ce cadre, le pincement, le tiraillement, le tapement, l’écrasement et l’appuiement, le picotement et le serrement constituent chacune des expériences sensorielles et motrices particulières dont la structure de base ne varie pas d’un contexte à l’autre. En second lieu, les résultats obtenus montrent que dès quatre ans, l’enfant est en mesure de comparer, puis de reconnaître une analogie entre une expérience exclusivement tactile et sa sensation de douleur. CONCLUSION: Ces résultats mettent en lumière le rôle primordial du raisonnement analogique dans l’expression verbale de la douleur, ce qui amène à affirmer que le niveau de développement cognitif de l’enfant n’est pas une variable a priori déterminante lorsqu’il s’agit de qualifier sa douleur. PMID:21766069

  7. La nuance contre l'arrogance. Lectures croises entre Roland Barthes et Gilles Deleuze in Daniel Bougnoux (d.), Empreintes de Roland Barthes, Paris, INA, 2009, p. 147-183

    E-print Network

    Paris-Sud XI, Université de

    « La nuance contre l'arrogance. Lectures croisées entre Roland Barthes et Gilles Deleuze » in Daniel Bougnoux (éd.), Empreintes de Roland Barthes, Paris, INA, 2009, p. 147-183 Yves Citton (Université de Grenoble ­ UMR LIRE) La nuance contre l'arrogance Impressions croisées entre Roland Barthes et

  8. SPECTRES DE RFLEXION ET CONSTANTES OPTIQUES DE LA PROUSTITE (Ag3AsS3) ENTRE 14 ET 600 cm-1

    E-print Network

    Paris-Sud XI, Université de

    L-95 SPECTRES DE R�FLEXION ET CONSTANTES OPTIQUES DE LA PROUSTITE (Ag3AsS3) ENTRE 14 ET 600 cm-1, accepte le 6 janvier 1977) Résumé. 2014 Les constantes optiques de la proustite (Ag3AsS3), à 300 K et à 80 Optical constants of proustite (Ag3AsS3) are determined from 18 to 700 03BCm by Kra- mers-Kronig analysis

  9. Ralise en co-tutelle entre l'Universit Martin-Luther de Halle-Wittenberg et Institut National Polytechnique de Lorraine

    E-print Network

    Paris-Sud XI, Université de

    THESE Réalisée en co-tutelle entre l'Université Martin-Luther de Halle-Wittenberg et Institut Physique de l'Université Martin-Luther de Halle-Wittenberg en Allemagne. Une partie de la recherche a aussi'équipe couches minces de l'université Martin-Luther de Halle pour l'accueil qu'il m'a réservé lors de mes séjours

  10. Pincharse sin infectarse: estrategias para prevenir la infección por el VIH y el VHC entre usuarios de drogas inyectables

    PubMed Central

    MATEU-GELABERT, P.; FRIEDMAN, S.; SANDOVAL, M.

    2011-01-01

    Resumen Objetivo Desde principios de los noventa, en la ciudad de Nueva York se han implementado con éxito programas para reducir la incidencia del virus de la inmunodeficiencia humana (VIH) y, en menor medida, del virus de la hepatitis C (VHC). A pesar de ello, aproximadamente el 70% de los usuario de drogas inyectables (UDI) están infectados por el VHC. Queremos investigar cómo el 30% restante se las ha arreglado para no infectarse. El Staying safe (nombre original del estudio) explora los comportamientos y mecanismos que ayudan a evitar la infección por el VHC y el VIH a largo plazo. Material y métodos Hemos utilizado el concepto de «desviación positiva» aplicado en otros campos de salud pública. Estudiamos las estrategias, prácticas y tácticas de prevención de aquellos UDI que, viviendo en contextos de alta prevalencia, se mantienen sin infectar por VIH y el VHC, a pesar de haberse inyectado heroína durante años. Los resultados preliminares presentados en este artículo incluyen el análisis de las entrevistas realizadas a 25 UDI (17 doble negativos, 3 doble positivos y 5 con infección por el VHC y sin infección por el VIH). Se usaron entrevistas semiestructuradas que exploraban con detalle la historia de vida de los sujetos, incluyendo su consumo de drogas, redes sociales, contacto con instituciones, relaciones sexuales y estrategias de protección y vigilancia. Resultados La intencionalidad es importante para no infectarse, especialmente durante períodos de involución (períodos donde hay un deterioro económico y/o social que llevan al que se inyecta a situaciones de mayor riesgo). Presentamos tres dimensiones independientes de intencionalidad que conllevan comportamientos que pueden ayudar a prevenir la infección: a) evitar «el mono» (síntomas de abstención) asegurando el acceso a la droga; b) «llevarlo bien» para no convertirse en un junkie y así evitar la «muerte social» y la falta de acceso a los recursos, y c) seguir sin infectarse por el VIH (sólo un doble negativo tuvo un amplio conocimiento sobre la hepatitis C). Estas intencionalidades no son mutuamente excluyentes. La presencia de varias refuerza la puesta en práctica a diario de comportamientos que pueden ayudar al que se inyecta a mantenerse libre de infecciones durante años. Algunas prácticas que hemos identificado se implementan en grupo y se comunican de UDI a UDI, de esta manera se extienden entre algunas redes sociales de UDI. Conclusiones Los UDI que permanecen sin infectarse planean e implementan estrategias de prevención en circunstancias donde otros UDI aplican prácticas de riesgo. El mantenimiento de la no infección no es, por lo tanto, un resultado del azar, sino más bien el resultado del esfuerzo (agencia) de los UDI. Investigar y extender estas estrategias y tácticas a través de programas de prevención podría contribuir a la prevención del VIH y el VHC. PMID:21915175

  11. Finalists named in University of Canterbury's $85,000 entr competition Ten finalists have been named in the annual $85,000 challenge competition run by the University of

    E-print Network

    Hickman, Mark

    semester in preparation for a final Dragon's Den-style night later this year. Entré is a student club which, adventure programmes for international students; and Christchurch Polytechnic student Elizabeth Ball, hand

  12. Étude physico-chimique des réactions entre oxydes d'azote Application à l'analyse de ces gaz en sortie de systèmes de combustion

    NASA Astrophysics Data System (ADS)

    Leblanc, E.; Jokela, K.; Perier-Camby, L.; Thomas, G.

    1999-05-01

    Analysing gaseous nitrogen oxides emissions at the combustion system outlet (exhaust pipe, central heating, glass kiln,...) are a current environmental topic. Yet, studying these pollutant involves two difficulties : first a great number of NOx do exist, and secondly the system can shift quickly. The objective of this work consists of examining results of literature and studying more specially NO/NO2/O2 system to clarify these problems. For this purpose theoretical and experimental works concerning kinetics and thermodynamics of NOx transformations have been carried out. The NOx maximum starting concentration reaches 1000 ppm in an oxygen-containing atmosphere and with temperature comprised between 25 circC and 1000 circC. These parameters are representative of real combustion conditions. An apparatus has been built to determine both experimental equilibrium and kinetic constants for the reaction 2 NO + O2 = 2 NO2. Rate constants have been measured for temperature lower than 300 circC. Above 300 circC, the catalytic influence of the reactor walls has been clearly established. For each temperature, NOx concentrations at equilibrium give experimental thermodynamic data, in agreement with the theoretical approach. Analyser les émanations d'oxydes d'azote gazeux issus des systèmes de combustion (moteurs automobiles, chauffage urbain, fours de verreries,...) constitue un objectif actuel de recherche concernant l'environnement. L'étude de ces polluants présente une double difficulté. D'une part, ils existent sous de multiples formes, d'autre part de nombreux facteurs viennent influer sur la vitesse de transformation de ces gaz (température, géométrie et nature du réacteur, temps,...). Ce travail a été mené pour effectuer une mise au point des recherches sur le sujet et étudier plus particulièrement aux niveaux thermodynamique et cinétique le mélange gazeux NO/NO2/O2. Un dispositif a été mis au point afin de mesurer expérimentalement les vitesses de réaction pour des paramètres expérimentaux représentatifs des atmosphères générées par les systèmes de combustion (teneur en NOx : 1000 ppm, présence d'oxygène, température comprise entre 25 circC et 1000 circC). Les constantes cinétiques ont ainsi été déterminées pour des températures inférieures à 300 circC. L'influence catalytique de la paroi du réacteur a été mise en évidence au delà de cette température. Les valeurs concernant les équilibres thermodynamiques entre les NOx ont également pu être validées expérimentalement.

  13. Aceptabilidad del diagnóstico rápido casero para HIV entre hombres gay y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires

    PubMed Central

    Balán, Iván C.; Carballo-Diéguez, Alex; Marone, Rubén O.; Pando, María A.; Barreda, Victoria; Ávila, María M.

    2011-01-01

    Resumen El uso del diagnóstico rápido para HIV en Argentina, así como otros países de Latinoamérica, ha sido limitado hasta el momento. Este trabajo reporta los resultados provenientes de un estudio cualitativo realizado entre hombres gays y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires, Argentina. El objetivo principal del mismo fue conocer las ventajas y desventajas que los hombres G&HSH perciben en relación al diagnóstico rápido casero para HIV. Se realizaron ocho grupos focales con 73 participantes en los cuales se discutió acerca de las ventajas y desventajas del uso de los diagnósticos rápidos. Las respuestas fueron codificadas utilizando un programa para análisis de datos cualitativos (NVivo) y analizadas temáticamente. Los participantes describieron numerosas ventajas sobre el uso del diagnóstico rápido casero, aunque algunos reportaron importantes preocupaciones dentro de las cuales se destaca la posibilidad de impulsos suicidas si alguien recibe un resultado positivo estando solo. En términos generales se observó una gran aceptabilidad para el uso del diagnóstico rápido si el mismo es realizado por personal de salud en lugares acondicionados para este fin. PMID:25284951

  14. Un modelo para el control de calidad academica de los textos de instruccion a distancia (A Model for Controlling the Academic Quality of Distance Education Texts).

    ERIC Educational Resources Information Center

    Bolanos-Mora, Guiselle; And Others

    1992-01-01

    In response to the need for a system of control over the academic quality of distance education texts, this article proposes a methodological model based on criteria that evaluate written materials based on their instructional quality, design, and production. A discussion and figures evaluate educational aspects of content, communication,…

  15. El Programa de Educacion a Distancia de la Universidad Nacional Autonoma de Mexico (UNAM) (The Distance Education Program at the National Autonomous University of Mexico (UNAM)).

    ERIC Educational Resources Information Center

    Manilla, Jose Manuel Alvarez

    1996-01-01

    Describes the development of a distance education program at the National Autonomous University of Mexico (UNAM) which will meet several needs: lifelong learning; adult education; service to remote populations; and continuing education for faculty in remote campuses. Provision of large-scale education depends on addressing issues dealing with…

  16. La efectividad de la educacion a distancia como metodologia en la desarrollo de destrezas de pensamiento (Effectiveness of Distance Education as a Methodology for Developing Thinking Skills).

    ERIC Educational Resources Information Center

    Melendez Alicea, Juan

    1992-01-01

    Presents steps taken in designing, justifying, and implementing an experimental study designed to investigate the effectiveness of distance education as a methodology for developing thinking skills. A discussion reviews major findings of the study by comparing student experiences from multimedia distance education and student experiences from…

  17. 5. Espais afins euclidians 5.1 Considerem en un pla afi euclidi`a una refer`encia {O; e1, e2} on e1e2 = 60

    E-print Network

    Casacuberta, Carles

    5. Espais afins euclidians 5.1 Considerem en un pla af´i euclidi`a una refer`encia {O; e1, e2} on e. Calculeu les coordenades de la projecci´o ortogonal del punt (1, -2, 3) sobre el pla x - y + 2z = 0 entre ells. Trobeu la dist`ancia del punt al pla en tots dos casos. 5.3 Sigui {O; e1, e2, e3} una refer

  18. Elucidation and in planta reconstitution of the parthenolide biosynthetic pathway.

    PubMed

    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

    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

  19. In Planta mutagenesis determines the functional regions of puroindoline proteins.

    Technology Transfer Automated Retrieval System (TEKTRAN)

    PINA and PINB functionally comprise the wheat (Triticum aestivum L.) Ha locus which controls grain texture and many wheat end-use properties. PINs in their functional forms impart soft texture and a mutation in either PIN is found in all hard wheats. Studies of the PINs mode of action is limited ...

  20. UNIVERSIDAD DE CHILE corr Planta Nombre Rut Grado Lista Pje

    E-print Network

    Rapaport, Iván

    Luis 0051602986 06 1 89,75 09-07-1992 01-01-1971 400000 Página 4 de 96 #12;24-01-2013 UNIVERSIDAD DE Saavedra Díaz Fernando Salvador 0126639961 05 2 80,50 01-06-2003 01-06-2002 080700 4 Profesional N.N. 05 5

  1. In planta modification of the potato tuber cell wall

    Microsoft Academic Search

    R. J. F. J. Oomen

    2003-01-01

    Apart from its well known uses in the human diet a large amount of the grown potatoes (about one third in the Netherlands) is used for the isolation of starch which is used in several food and non-food applications. The cell wall fibres comprise a large portion of the waste material remaining after the starch isolation process. While cell wall

  2. QUELS LIENS ENTRE L'IMAGE DU PAYS ET L'IMAGE DE L'UNE DE SES VILLES ? UNE APPLICATION AU CAS DE LA FRANCE ET DE LYON

    Microsoft Academic Search

    Isabelle Prim-Allaz; Line Ricard; Courvoisier François; Khadir-Poggi Yasmina

    2008-01-01

    Cette recherche s'intéresse aux liens existants entre l'image du pays et l'image de l'une de ses villes. Pour ce faire, une revue de littérature sur l'image des destinations est proposée. Elle fait ressortir la quasi absence de recherche visant à lier les différents niveaux composants une destination (pays, région, ville,...). Une étude quantitative a été conduite dans 4 pays (Canada,

  3. 1998. O.Hoffmann "Polticas agrarias, reformas del Estado y afiliaciones identitarias: una comparacin entre Colombia y Mxico" Revista Mexicana de Sociologa N4/98, Mxico, pp99-123.

    E-print Network

    Paris-Sud XI, Université de

    comparación entre Colombia y México" Revista Mexicana de Sociología Nº4/98, México, pp99-123. www internacional. A finales del siglo XX y compartiendo los mismos dogmas neoliberales, México y Colombia Colombia y México O. Hoffmann La Constitución colombiana de 1991 reconoce la naturaleza multiénica y

  4. Le transfert de connaissances entre les mathematiques et les sciences. Une etude exploratoire aupres d'eleves de 4e secondaire

    NASA Astrophysics Data System (ADS)

    Samson, Ghislain

    2003-06-01

    Au moment ou dans plusieurs pays on travaille a refondre les programmes d'etudes, tant au primaire qu'au secondaire, l'interet pour le transfert renait. Un des concepts fondamentaux en apprentissage consiste en l'habilete a reutiliser de facon consciente et efficace un acquis d'une situation a une autre situation. Cette recherche emane de preoccupations professionnelles au moment ou le chercheur etait enseignant au secondaire. Au cours de ces annees, il lui a ete possible de constater que plusieurs eleves percevaient difficilement les liens presents entre les disciplines mathematiques et scientifiques. Des travaux en psychologie cognitive et plus particulierement selon une perspective du traitement de l'information ont servi de cadre de reference pour evaluer et analyser les capacites de transfert aupres d'eleves de 4e secondaire. Ce cadre de reference permet de formuler le principal objectif qui est de mieux comprendre le processus de transfert chez des eleves en situation de resolution de problemes scientifiques. Cette these s'interesse donc au transfert en tant que phenomene important du processus d'apprentissage au sens de l'integration. La methode de recherche choisie, de nature qualitative, est principalement axee sur l'evaluation de la capacite a transferer des connaissances lors d'une epreuve et d'un entretien. Pour evaluer ce potentiel de transfert, nous avons elabore deux outils: une epreuve en mathematiques et en sciences et un guide d'entretien. Pour la passation de l'epreuve, le chercheur a pu compter sur la collaboration de 130 sujets provenant de deux ecoles. L'entretien complete la prise de donnees avec 13 sujets ayant accepte de poursuivre l'etude. Les donnees recueillies par ces instruments font ensuite l'objet d'une analyse de contenu. En premier lieu, les verbatims de l'epreuve et de l'entretien ont ete transcrits, puis codifies. La correction des reponses fournies pour les problemes resolus s'est faite a partir d'une grille d'analyse qualitative et adaptee de la litterature (Thouin, 1995). Une seconde serie d'analyses permettant de categoriser les reponses selon la typologie des connaissances declaratives, procedurales et conditionnelles complete la prise de donnees. Nos resultats indiquent que les sujets sont tres influences par des elements de surface, principalement lorsqu'il s'agit de problemes auxquels ils ne sont pas habitues. En l'absence de connaissances de base, plusieurs sujets vont tendre vers des propositions de solution "pratico-pratique" provenant de leur vecu: cela nous apparait d'importance d'un point de vue didactique et en matiere de transfert. Lors des entretiens realises un mois plus tard, les sujets ont eprouve de la difficulte a se rappeler le contenu de l'epreuve. Et lorsqu'il y avait un rappel, celui-ci etait superficiel et surtout axe sur le contenu ou le contexte d'un probleme. La plupart des sujets ne pouvait nommer que deux ou trois elements (des problemes en mathematiques, en sciences physiques, le probleme de la fenetre, le probleme du laser, etc.). Nos resultats confirment ce que plusieurs chercheurs (Julo, 1995, Jonnaert et Vander Borght, 1999; Richard et al., 1990) qui s'interessent aux questions de l'apprentissage admettent aujourd'hui: l'eleve ne travaille jamais sur la situation proposee par l'enseignant, mais bien sur la representation qu'il s'en est construite. Au plan methodologique, cette recherche est interessante par la variete des sources de collecte de donnees utilisees, par l'application d'outils methodologiques et d'analyses originaux tires de la recherche et de la pratique. Du cote theorique, il resulte de cette etude une meilleure comprehension du processus de transfert des connaissances mathematiques vers les sciences physiques. Finalement, aux plans didactique et pedagogique, cette recherche alimente la reflexion sur l'apprentissage et l'enseignement des sciences au secondaire. Elle fait ressortir que les mathematiques sont importantes dans la mobilisation de certaines connaissances scientifiques et que l'enseignant peut et devrait jouer un

  5. "LA IGUALDAD ENTRE MUJERES Y HOMBRES

    E-print Network

    Escolano, Francisco

    sexual y por razón de sexo en las Universidades 5 13 17 23 37 49 53 57 #12;#12;5 1.1. NORMATIVA ESTATAL producir discriminación por razón de sexo y la responsabilidad de los poderes públicos en el logro de la

  6. LE SYSTEME COMPTABLE MALGACHE ENTRE MODELE

    E-print Network

    Paris-Sud XI, Université de

    nouveau plan comptable malgache dit PCG 2005, applicable à partir du 1er janvier 2005, se substitue au) a fait l'objet de multiples définitions. Elle est à la fois une science et un art ; elle peut être'abord une description synthétique de l'économie malgache, puis nous présenterons le nouveau plan comptable

  7. Courte note Relation entre marqueurs gntiques

    E-print Network

    Boyer, Edmond

    . The relationships between 41 genetic markers (blood groups and biochemical polymor- phisms), 3 environmental factors system of cattle blood groups and the &dquo;encierro&dquo; were significantly related to the activity ― Relationship between genetic markers and serum enzymatic activity in fighting bulls

  8. Article original Relations entre la prise alimentaire

    E-print Network

    Paris-Sud XI, Université de

    vein and carotid artery and with an electro- magnetic flowmeter probe around the portal vein (poids vif : 59,4 ± 3,5 kg) ont été munis de cathéters permanents dans la veine porte et l. For this purpose, 5 growing pigs (59.4 ± 3.5 kg live weight) were fitted with permanent catheters in the portal

  9. DIMED 86: Discurso dos Media e Ensino a Distancia = Discours des Media et Enseignement a Distance = Media Speech and Distance Teaching. Papers Presented at a Seminar (21st, Algarve, Portugal, March 10-15, 1986).

    ERIC Educational Resources Information Center

    Coelho, Maria Eduarda Leal

    Presentations at this seminar on distance education focused on the different types of speech in multimedia presentations which contribute to the elaboration (simulated or substituted) of a situation involving different relationships. In addition to opening and closing remarks by Marcel de Greve and a final report by the Scientific Committee of…

  10. Factors affecting the phytoaccumulation of weathered, soil-borne organic contaminants: analyses at the ex Planta and in Planta sides of the plant root

    Microsoft Academic Search

    MaryJane Incorvia Mattina; William A. Berger; Brian D. Eitzer

    2007-01-01

    Persistent Organic Pollutants (POPs) in the soil–plant system were tracked from their origin in the bulk soil, into the rhizosphere\\u000a soil pore water, to the xylem sap, and up to the aerial plant tissue. Specifically, the profiles of both chiral and achiral\\u000a components of technical chlordane along this continuum were examined in detail for members of the Cucurbitaceae family: Cucurbita

  11. Detección de Virus por Serología y Plantas Indicadoras en el Tubérculo-Semilla y Plantas de Cultivo de Meristemos en Papa (Solanum tuberosum L.) var. Alfa

    Microsoft Academic Search

    Víctor Valenzuela-Herrera; Rafael Bujanos-Muñiz

    2003-01-01

    Viral detection in Alpha potato tubers from Tenango del Valle, State of Mexico, was performed by ELISA and indicator plants. Potato tubers were planted in the greenhouse, and the plants were kept in insect-proof cages; sap was extracted from top leaflets to mechanically inoculate indicator plants for Potato leafroll virus (PLRV), Potato virus A (PVA), Potato virus X (PVX), Potato

  12. Ludovia 2008 Entre march et communaut -1 Entre march et communaut : une

    E-print Network

    Boyer, Edmond

    critique du concept de l'audience passive formulée déjà par des auteurs comme Richard Hoggart ou Roland Barthes dans les années 1960. Quand John Perry Barlow [1996] déclare « l'indépendance du cyberespace » il

  13. Water conservation and reuse in poultry processing plant—A case study

    Microsoft Academic Search

    E. M. Matsumura; J. C. Mierzwa

    2008-01-01

    Water conservation and water reuse concepts in food industry are presented in this paper. The developed study was in poultry processing plant, which focused water reuse evaluation for only non-potable applications. Although potable water reuse is allowed in some countries and there are international regulations about this practice [Environmental Protection Agency (EPA). Guidelines for Water Reuse; 2004. http:\\/\\/www.epa.gov\\/nrmrl\\/pubs\\/625r04108\\/625r04108.htm], this issue

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

    E-print Network

    Paré, Paul W.

    et al., 2003; Smith et al., 1993). The importance of exudates for the metabolic functions of microbes., 2007). Recent discovery of a monosaccha- ride transporter from symbiotic glomeromycotan fungi shed light on how carbohydrates are transported through the symbiotic interface (Schu¨ bler et al., 2006

  15. Perfil dos consumidores de plantas medicinais e condimentares do município de Pato Branco (PR)

    Microsoft Academic Search

    José Abramo Marchese; Fernando Broetto; Lin C. Ming; Rumy Goto; Mirian B. Stefanini; Adinam Galina; Ângela C. Tedesco; Cassiano Conte; Cindia M. Miniuk; Daniel A. Schurt; Emerson Sangaletti; Giovani O. da Silva; Greice Gomes; José A. Bertagnolli; Lucia Francheschi; Maicon L. Cossa; Maires R. D. Moraes; Patrícia M. Lima; Rodrigo Lira; Silvana Costa

    2004-01-01

    The profile of consumers medicinal plants and spices of Pato The profile of supermarket users in Pato Branco city, Paraná State, Brazil, was obtained, related to their preference for medicinal and spice plants, as a subsidy to production by small farmers. The consumers prefer organic products observing the appearance and price of the product, and they go once a week

  16. Identification and analysis of in planta expressed genes of Magnaporthe oryzae

    PubMed Central

    2010-01-01

    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

  17. Espécies ativas de oxigênio na resposta de defesa de plantas a patógenos

    Microsoft Academic Search

    Mário Lúcio V. Resende; Sônia M. L. Salgado; Zuleide M. Chaves

    2003-01-01

    Reactive oxygen species on plant defense responses to pathogens Oxidative burst is a very quick plant defense response after pathogen recognition, leading to hypersensitiv e reaction (HR). This response is due to generation of reactive oxygen species (ROS), such as H 2O2 , O 2-, and OH-. Several roles in plant defense have been proposed for ROS. Hidrogen peroxide (H2O2),

  18. Regioselectivity of glucosylation of caffeic acid by a UDP-glucose:glucosyltransferase is maintained in planta.

    PubMed Central

    Lim, Eng-Kiat; Higgins, Gillian S; Li, Yi; Bowles, Dianna J

    2003-01-01

    Caffeic acid is a phenylpropanoid playing an important role in the pathways leading to lignin synthesis and the production of a wide variety of secondary metabolites. The compound is also an antioxidant and has potential utility as a general protectant against free radicals. Three glucosylated forms of caffeic acid are known to exist: the 3- O - and 4- O -glucosides and the glucose ester. This study describes for the first time a glucosyltransferase [UDP-glucose:glucosyltransferase (UGT)] that is specific for the 3-hydroxyl, and not the 4-hydroxyl, position of caffeic acid. The UGT sequence of Arabidopsis, UGT71C1, has been expressed as a recombinant fusion protein in Escherichia coli, purified and assayed against a range of substrates in vitro. The assay confirmed that caffeic acid as the preferred substrate when compared with other hydroxycinnamates, although UGT71C1 also exhibited substantial activity towards flavonoid substrates, known to have structural features that can be recognized by many different UGTs. The expression of UGT71C1 in transgenic Arabidopsis was driven by the constitutive cauliflower mosaic virus 35 S (CaMV35S) promoter. Nine independent transgenic lines were taken to homozygosity and characterized by Northern-blot analysis, assay of enzyme activity in leaf extracts and HPLC analysis of the glucosides. The level of expression of UGT71C1 was enhanced considerably in several lines, leading to a higher level of the corresponding enzyme activity and a higher level of caffeoyl-3- O -glucoside. The data are discussed in the context of the utility of UGTs for natural product biotransformations. PMID:12741958

  19. Acción biocida de plantas de Piper tuberculatum Jacq. sobre Diatraea saccharalis (Lepidóptera, Pyralidae)

    Microsoft Academic Search

    Gladys V. Soberón; Consuelo Rojas; Jorge Saavedra; Massuo J. Kato; Guillermo E. Delgado

    The biocid action of DCM:MeOH (2:1), EtOH and aqueous extracts of leaves, stems and mature spikes (with fruits and seeds) of field plants and DCM:MeOH (2:1) extract of in vitro plants of Piper tuberculatum on III larval stage of Diatraea saccharalis was evaluated. The method was by inoculating the previously eluted extract with distillate water as topic applications on the

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

    E-print Network

    Jeffery, Jennifer L.

    2010-01-14

    Phytochemical and Nutrient Accessibility ..................................... 6 II CAROTENOID BIOSYNTHESIS IN SEVEN VARIETIES OF DEVELOPING WATERMELON (CITRULLUS LANATUS (THUNB.) MATSUM. & NANAI): A DISCUSSION OF FLESH COLOR AND PLOIDY EFFECTS... ...................................................................................... 31 ix ix CHAPTER Page III GENOTYPIC EFFECTS ON WATERMELON (CITRULLUS LANATUS (THUNB.) MATSUM. & NANAI) CAROTENOID...

  1. Planta (2007) 227:167175 DOI 10.1007/s00425-007-0604-1

    E-print Network

    Quatrano, Ralph S.

    2007-01-01

    to wild type embryos. Expression of AtEm1 and AtEm6 was strongly induced by abscisic acid in callus of the transcriptional complex in vitro. Keywords 14-3-3 Proteins · ABI3 · Abscisic acid · Em · Embryo calli Abbreviations ABA Abscisic acid ChIP Chromatin immunoprecipitation DAP Days after pollination EMSA

  2. Planta (2007) 225:863872 DOI 10.1007/s00425-006-0398-6

    E-print Network

    Quatrano, Ralph S.

    2007-01-01

    and transactivation. Keywords Abscisic acid · Barley · Em · Nuclear localization · Physcomitrella · VP1 Abbreviations ABA Abscisic acid ABI3 Abscisic acid insensitive 3 ABI5 Abscisic acid insensitive 5 GFP Green signal VP1 Viviparous 1 Introduction The phytohormone abscisic acid (ABA) plays a vital role in plant

  3. Hydraulic properties of Zinnia elegans : from cellular development in vitro to performance in planta

    Microsoft Academic Search

    P. Twumasi

    2007-01-01

    The water status in plants is dependent on the xylem hydraulic conductance. In cut flowers, for example, the preservation of continuous hydraulic conductance is important for maintaining longer vase life, an important index for cut flower quality. Many factors, such as stomata performance, root water uptake efficiency, temperature, light quality and humidity, influence the efficiency of water transport in the

  4. Variação sazonal em antioxidantes em folhas de plantas jovens de Caesalpinia echinata Lam. (pau-brasil)

    Microsoft Academic Search

    Patricia Bulbovas; Mirian C. S. Rinaldi; Welington B. C. Delitti; Marisa Domingos

    2005-01-01

    Seasonal variation in antioxidants in leaves of young plants of Caesalpinia echinata Lam. (brazilwood)). The urban environmental factors generate conditions of oxidative stress in plants. Cellular antioxidants, such as ascorbic acid (AA), thiols (Ti), peroxidases (POD) and superoxide dismutase (SOD) are induced to different levels depending on their capacity to tolerate stressing conditions. In the first part of this study

  5. Chlamydiae Has Contributed at Least 55 Genes to Plantae with Predominantly Plastid Functions

    Microsoft Academic Search

    Ahmed Moustafa; Adrian Reyes-Prieto; Debashish Bhattacharya; Robert Desalle

    2008-01-01

    Not Available Bibtex entry for this abstract Preferred format for this abstract (see Preferences) Find Similar Abstracts: Use: Authors Title Return: Query Results Return items starting with number Query Form Database: Astronomy Physics arXiv e-prints

  6. UNA PLANTA NUEVA DE LA SIERRA DE SEGURA (ESPAA), SUCCISELLA ANDREAE-MOUNAE, SP. NOV. (DIPSACACEAE)

    E-print Network

    Herrera, Carlos M.

    la Sierra de Segura (España), Succi- sella andreae-molinae, sp, nov. (Dipsacaceae). Anales Jard. Bot andreae-molinae, sp. nov. (Dipsacaceae). Anales Jard. Bot. Madrid 51(2): 249-254 (in Spa- nish). A new

  7. "In planta" regulation of the "Arabidopsis" Ca(2+)/H(+) antiporter CAX1

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Vacuolar localized Ca(2+)/H(+) exchangers such as "Arabidopsis thaliana" cation exchanger 1 (CAX1) play important roles in Ca(2+) homeostasis. When expressed in yeast, CAX1 is regulated via an N-terminal autoinhibitory domain. In yeast expression assays, a 36 amino acid N-terminal truncation of CAX1...

  8. Parâmetros de planta para aprimorar o manejo da adubação nitrogenada de cobertura em milho

    Microsoft Academic Search

    Lisandro Rambo; Paulo Regis Ferreira da Silva; Gilber Argenta; Luís Sangoi

    2004-01-01

    Maize is one of the most demanding grasses in terms of nitrogen fertilization. There is a need to estimate accurately the amount of N applied to the soil so that this crop can be properly supplied during its whole cycle. The soil organic matter content, grain yield expectation and N contribution from the decay of the preceding crop are the

  9. In Planta Protein Sialylation through Overexpression of the Respective Mammalian Pathway*

    PubMed Central

    Castilho, Alexandra; Strasser, Richard; Stadlmann, Johannes; Grass, Josephine; Jez, Jakub; Gattinger, Pia; Kunert, Renate; Quendler, Heribert; Pabst, Martin; Leonard, Renaud; Altmann, Friedrich; Steinkellner, Herta

    2010-01-01

    Many therapeutic proteins are glycosylated and require terminal sialylation to attain full biological activity. Current manufacturing methods based on mammalian cell culture allow only limited control of this important posttranslational modification, which may lead to the generation of products with low efficacy. Here we report in vivo protein sialylation in plants, which have been shown to be well suited for the efficient generation of complex mammalian glycoproteins. This was achieved by the introduction of an entire mammalian biosynthetic pathway in Nicotiana benthamiana, comprising the coordinated expression of the genes for (i) biosynthesis, (ii) activation, (iii) transport, and (iv) transfer of Neu5Ac to terminal galactose. We show the transient overexpression and functional integrity of six mammalian proteins that act at various stages of the biosynthetic pathway and demonstrate their correct subcellular localization. Co-expression of these genes with a therapeutic glycoprotein, a human monoclonal antibody, resulted in quantitative sialylation of the Fc domain. Sialylation was at great uniformity when glycosylation mutants that lack plant-specific N-glycan residues were used as expression hosts. Finally, we demonstrate efficient neutralization activity of the sialylated monoclonal antibody, indicating full functional integrity of the reporter protein. We report for the first time the incorporation of the entire biosynthetic pathway for protein sialylation in a multicellular organism naturally lacking sialylated glycoconjugates. Besides the biotechnological impact of the achievement, this work may serve as a general model for the manipulation of complex traits into plants. PMID:20305285

  10. In planta transient expression as a system for genetic and biochemical analyses of chlorophyll biosynthesis

    Microsoft Academic Search

    Ruairidh JH Sawers; Phyllis R Farmer; Peter Moffett; Thomas P Brutnell

    2006-01-01

    BACKGROUND: Mg chelatase is a multi-subunit enzyme that catalyses the first committed step of chlorophyll biosynthesis. Studies in higher plants and algae indicate that the Mg chelatase reaction product, Mg-protoporphyrin IX plays an essential role in nuclear-plastid interactions. A number of Mg chelatase mutants have been isolated from higher plants, including semi-dominant alleles of ChlI, the gene encoding the I

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

    E-print Network

    Tholl, Dorothea

    2009-01-01

    -induced volatile formation in Arabidopsis lyrata ssp. petraea, a perennial, outcrossing relative of A. thaliana AlCarS Arabidopsis lyrata ssp. petraea (E)- -caryophyllene synthase AtTPS21 A. thaliana terpene. The self-pollinating annual, Arabidopsis thaliana, and its relative, the outcrossing perennial, Arabidopsis

  12. Planta (2008) 228:411425 DOI 10.1007/s00425-008-0746-9

    E-print Network

    Sheen, Jen

    2008-01-01

    and evolutionary features of the hexokinase gene family in Arabidopsis Abhijit Karve · Bradley L. Rauh · Xiaoxia Arabidopsis hexokinase1 (HXK1) is a moon- lighting protein that has separable functions in glucose signaling of numerous existing changes. Sliding windows analyses of coding sequences in A. thaliana and A. lyrata ssp

  13. Pharma-Planta: road testing the developing regulatory guidelines for plant-made pharmaceuticals

    Microsoft Academic Search

    Penelope Amelia Claire Sparrow; Judith A. Irwin; Phil J. Dale; Richard M. Twyman; Julian K. C. Ma

    2007-01-01

    Significant advances over the last few years have seen plant-made pharmaceuticals (PMPs) move from the exploratory research\\u000a phase towards clinical trials, with the first commercial products for human use expected to reach the market by 2009. Europe\\u000a has yet to witness the commercial application of PMP technology, although at least one product has begun phase II clinical\\u000a trials with others

  14. Planta (2007) 226:12991310 DOI 10.1007/s00425-007-0551-x

    E-print Network

    Plaxton, William

    2007-01-01

    Phosphoenolpyruvate PEPC PEP carboxylase PKc Cytosolic pyruvate kinase PPCK PEP carboxylase kinase PP2Ac Catalytic carboxylase protein kinase from developing castor oil seeds: partial puriWcation, characterization carboxylase (PEPC, EC 4.1.1.31) protein kinase (PPCK) was puriWed »1,500-fold from developing castor oil seeds

  15. Phylogenetic Relationships of Fungi, Plantae, and Animalia Inferred from Homologous Comparison of Ribosomal Proteins

    Microsoft Academic Search

    Gabriel Bittar

    1998-01-01

    .   The complete set of available ribosomal proteins was utilized, at both the peptidic and the nucleotidic level, to establish\\u000a that plants and metazoans form two sister clades relative to fungi. Different phylogenetic inference methods are applied to\\u000a the sequence data, using archeans as the outgroup. The evolutionary length of the internal branch within the eukaryotic crown\\u000a trichotomy is demonstrated

  16. Sexual mating preferences in vitro and in planta among Japanese isolates of Phytophthora infestans

    Microsoft Academic Search

    Kiyotaka Gotoh; Seishi Akino; Takako Kiyoshi; Shigeo Naito

    2005-01-01

    The sexual preferences of Japanese isolates of Phytophthora infestans were determined by mating on agar, in broth, or in plants. The influence of their sexual preference was confirmed in the host tissues. Three wild-type isolates and a ß-glucuronidase (GUS) transformant were co-cultured to identify the origin of antheridia and oogonia. Japanese A1 isolate had a unique sexual preference compared with

  17. In planta quantification of endoreduplication using fluorescent in situ hybridization (FISH).

    PubMed

    Bourdon, Matthieu; Coriton, Olivier; Pirrello, Julien; Cheniclet, Catherine; Brown, Spencer C; Poujol, Christel; Chevalier, Christian; Renaudin, Jean-Pierre; Frangne, Nathalie

    2011-06-01

    Endopolyploidy, i.e. amplification of the genome in the absence of mitosis, occurs in many plant species and happens along with organ and cell differentiation. Deciphering the functional roles of endopolyploidy is hampered by the fact that polyploid tissues generally comprise cells with various ploidy levels. In some fleshy fruits (amongst them tomato fruit) the ploidy levels present at the end of development range from 2C to 256C in the same tissue. To investigate the temporal and spatial distribution of endopolyploidy it is necessary to address the DNA content of individual nuclei in situ. Conventional methods such as fluorometry or densitometry can be used for some tissues displaying favorable characteristics, e.g. small cells, small nuclei, organization in a monolayer, but high levels of varying polyploidy are usually associated with large sizes of nuclei and cells, in a complex three dimensional (3-D) organization of the tissues. The conventional methods are inadequate for such tissue, becoming semi-quantitative and imprecise. We report here the development of a new method based on fluorescent in situ bacterial artificial chromosome hybridizations that allows the in situ determination of the DNA ploidy level of individual nuclei. This method relies on the counting of hybridization signals and not on intensity measurements and is expected to provide an alternative method for mapping endopolyploidy patterns in mature, 3-D organized plant tissues as illustrated by the analysis of ploidy level and cell size in pericarp from mature green tomato fruit. PMID:21418357

  18. Crescimento e análise do potencial antifúngico em plantas de Cissus verticillata (L.) Nicolson & Jarvis (Vitaceae)

    Microsoft Academic Search

    L. SILVA

    Growth and analysis of antifungical potential of Cissus verticillata (L.) Nicolson & Jarvis (Vitaceae). Photoperiod is an environmental factor that signalizes changes of seasons and induces physiological responses in plants. This can lead to the adaptation to the environment, as well as to the synthesis of secondary compounds. Cissus verticillata is known as \\

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

    E-print Network

    Jeffery, Jennifer L.

    2010-01-14

    , tomato, and melon have the largest cells. Sweet potato, butternut squash, carrot, and mango have the most fibrous cell walls; mango and papaya additionally had the thickest walls. Chromoplast globular, tubular, crystalline, and membranous substructures...

  20. In Planta visual monitoring of green fluorescent protein in transgenic rice plants.

    PubMed

    Chung, B C; Kim, J K; Nahm, B H; Lee, C H

    2000-08-31

    The green fluorescent protein (GFP) from the jellyfish Aequorea victoria is a widely used reporter that can be directly visualized in the living cells in both animals and plants. We inserted a synthetic gene (sgfp) encoding a modified form of the GFP into expression vector, Act1-sgfp for the direct expression of GFP which is easily detectable in rice plants. Green fluorescence emitted from GFP could be visualized in calli, dry seeds, roots and seedlings with green shoots of transgenic rice plants. In our visualization system with a charge-coupled device camera, band-pass filters and a light source, the presence of red chlorophyll autofluorescence from chloroplasts did not alter the green fluorescence of GFP. These results demonstrate that GFP could be used as a non-destructive visual selection marker for examining gene expression in transformed calli, dry seeds and young plants. PMID:10987138

  1. In planta changes in protein phosphorylation induced by the plant hormone abscisic acid

    PubMed Central

    Kline, Kelli G.; Barrett-Wilt, Gregory A.; Sussman, Michael R.

    2010-01-01

    Abscisic acid (ABA) is a hormone that controls seed dormancy and germination as well as the overall plant response to important environmental stresses such as drought. Recent studies have demonstrated that the ABA-bound receptor binds to and inhibits a class of protein phosphatases. To identify more broadly the phosphoproteins affected by this hormone in vivo, we used 14N/15N metabolic labeling to perform a quantitative untargeted mass spectrometric analysis of the Arabidopsis thaliana phosphoproteome following ABA treatment. We found that 50 different phosphopeptides had their phosphorylation state significantly altered by ABA over a treatment period lasting 5–30 min. Among these changes were increases in phosphorylation of subfamily 2 SNF1-related kinases and ABA-responsive basic leucine zipper transcription factors implicated in ABA signaling by previous in vitro studies. Furthermore, four members of the aquaporin family showed decreased phosphorylation at a carboxy-terminal serine which is predicted to cause closure of the water-transporting aquaporin gate, consistent with ABA's role in ameliorating the effect of drought. Finally, more than 20 proteins not previously known to be involved with ABA were found to have significantly altered phosphorylation levels. Many of these changes are phosphorylation decreases, indicating that an expanded model of ABA signaling, beyond simple phosphatase inhibition, may be necessary. This quantitative proteomics dataset provides a more comprehensive, albeit incomplete, view both of the protein targets whose biochemical activities are likely to be controlled by ABA and of the nature of the emerging phosphorylation and dephosphorylation cascades triggered by this hormone. PMID:20733066

  2. Dynamic Root Exudation of Sorgoleone and Its in Planta Mechanism of Action

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The oily droplets exuding from the root hairs of sorghum are composed of a 1:1 ratio of sorgoleone and its lipid resorcinol analog. The production and release appear to be suppressed when 15 to 20 µg/mg dry weight accumulates at the tip of the root hairs. However, more exudate is produced followin...

  3. CRECIMIENTO DE PLANTAS INJERTADAS JÓVENES DE DOS CULTIVARES DE NÍSPERO DESPUÉS DEL PRENDIMIENTO

    Microsoft Academic Search

    Norkys Mez; Dámaso Bautista

    Growth of young grafted plants of two cultivars of sapodilla after the healing The grafting, growth and branching of the main axis of sapodilla (Manilkara zapota van Royen) was studied in the cvs. Santiago and Delfina. The trial was carried out in the experimental field of the Graduate School of Horticulture, in Tarabana, Lara State (10º 01' N, 500 masl),

  4. 14 MaIG 19 JunY 2014 Edifici Biblioteca General -planta baIXa

    E-print Network

    Escolano, Francisco

    /SAB El sabor del sake = Sanma no Aji MD 791.223.2/OZU/SAB El sabor del té verde con arroz = Ochazuke no aji Hoshino, Yoshihiro MD 791.223.2/HOS/TIE La tienda maldita : (abierto las 24 h.) Ichikawa, Kon MD

  5. Regulation and mechanism of potassium release from barley roots: an in planta 42

    E-print Network

    Britto, Dev T.

    Phytologist (2010) 188: 1028­1038 doi: 10.1111/j.1469-8137.2010.03436.x Key words: barley (Hordeum vulgare from roots of intact barley (Hordeum vulgare), in the context of recent discoveries in the molecular

  6. Modes of action associated with microbially induced in planta suppression of plant-parasitic nematodes

    Microsoft Academic Search

    R. A. Sikora; K. Schäfer; A. A. Dababat

    2007-01-01

    This article discusses the extensive research that has been conducted on the use of mutualistic bacterial and fungal endophytes\\u000a for the biological control of plant-parasitic nematodes. This review deals in particular with the modes of action of multitrophic\\u000a interactions involving endophytic bacteria or fungi that have biological control activity towards the root-knot nematode,\\u000a Meloidogyne incognita, and the potato cyst nematode,

  7. Características físicas e produção de palmito de palmeira real australiana

    Microsoft Academic Search

    Marilene L. A. Bovi; Gentil Godoy Júnior; Matheus A. R. Cembranelli; Sandra H. Spiering; C. Postal

    RESUMO Características relacionadas ao crescimento e a produção do palmito de famílias de meios -irmãos de palmeiras do gênero Archontophoenix foram estudadas num experimento a campo, em Ubatuba, SP, visando identificar se há variação entre e dentro de espécies. A colheita, realizada três anos após o plantio, produziu, em média, de 231,06 a 465,63 g planta -1 de resíduo basal

  8. Comercialização de carqueja por ervateiros da zona central de Pelotas, Rio Grande do Sul

    Microsoft Academic Search

    Gustavo Heiden; Leila Macias; Vera Lucia Bobrowski; João Ricardo Vieira Iganci

    RESUMO A venda de carqueja (Baccharis L. seção Caulopterae DC., Asteraceae), é uma atividade comum entre ervateiros da zona central de Pelotas, bem como a procura e uso desta planta pelos consumidores. Com o objetivo de caracterizar a comercialização e o consumo de carqueja, foram entrevistados ervateiros da Zona Central da cidade de Pelotas, localizada no Sul do Estado do

  9. Master d'Ocanographie UE 310 `Invasions et transferts biologiques'

    E-print Network

    Boudouresque, Charles F.

    Streptobionta Euglyphids Retaria Cercobionta ARCHAEPLASTIDAARCHAEPLASTIDA (= PLANTAE)(= PLANTAE) Ellobiopsidae (Boudouresque, original) The 10 Eukaryote kingdoms Lobosa Mycetobionta Chytridiomycota Fungi Choanoflagellata (= PLANTAE)(= PLANTAE) Ellobiopsidae Bicosoecida Picobiliphyta ? Katablepharida CRYPTO- Trentepohlio- phyceae

  10. "Lo Ultimo": "Consejos"--"Un Dialogo Respetoso Entre Colegas"

    ERIC Educational Resources Information Center

    Vasquez, Olga A.; Flores, Belinda Bustos; Clark, Ellen Riojas

    2001-01-01

    "Los testimonios," or life stories, shared in this volume reveal that academia represents a labyrinth of challenges for aspiring and emerging Latina scholars--a story these authors know all too well. As Latina "veterana" scholars, who have traveled this arduous journey, the authors recognize that their collective efforts have…

  11. Le cannabis dans les armées : entre passé et actualité

    Microsoft Academic Search

    C. Gheorghiev; P. Arvers; F. de Montleau; G. Fidelle; B. Queyriaux; C. Verret

    2009-01-01

    Cannabis in the army is a reality the authors have chosen to inscribe in a temporality, from the concept of mental hygiene to the history of cannabis and of its spreading in the French population, so as to apprehend the present interest in cannabis in the army. Consumption of psychoactive drugs in military forces actually dates back to some decades,

  12. RELATIONS ENTRE LES CARACTRES BIOLOGIQUES, SROLOGIQUES ET PIDMIOLOGIQUES

    E-print Network

    Paris-Sud XI, Université de

    sur pente de Tryptose Blood Agar Base Difco. 2. Coagulase Libve A o,5 ml de culture de I8 heures en contient I,5 p. 100 d'agar au lieu de o,2 p. too,0,002 p. 100 de pourpre de bromocrésol au lieu de o

  13. SympoSium on EntrEprEnEurShip

    E-print Network

    Weber, David J.

    and Acting CEO ­ AllTranz, Inc. Legal Perspective: Legal Fundamentals and Foundations for a Successful Start Partner, MLV Healthcare Partners and UM Entrepreneur in Residence Stephen Auvil, MBA ­ Vice President

  14. Predictores de Conductas Sexuales de Riesgo entre Adolescentes

    Microsoft Academic Search

    Sheila Gonçalves Câmara; Jorge Castellá Sarriera; Mary Sandra Carlotto

    2007-01-01

    This study evaluates the sexual risk predictors (predictors of sexual intercourse without condom) that may cause infection by STD\\/AIDS, considering the frequency and the use of contraceptive methods. It analyzes socio-demographic, psychosocial and health variables. The sample was composed by 389 youths, third-year high school students from Porto Alegre, Brazil. Through a binary logistic regression analisys we have found that

  15. ENTRE EL CONCEPTO Y LA PRÁCTICA: RESPONSABILIDAD SOCIAL EMPRESARIAL

    Microsoft Academic Search

    FARIDE CRESPO RAZEG

    2010-01-01

    Dada la importancia del concepto de responsabilidad social en el mundo de los negocios, la poca claridad y relación con las prácticas; es primordial tratar de entenderlo para definirlo y de esta forma saber cuáles son las acciones a implementar para ser socialmente responsable. Por ello, el objetivo del presente artículo es presentar dos tipos de discusiones alrededor del concepto,

  16. Interactions initiales entre cellules dendritiques et micro-organismes impliqus

    E-print Network

    Boyer, Edmond

    %) n'était pas différente de celle des DC immatures (Dci). L'activation des DCs par cette mycobactérie signalisation différentes. Résultats 0 1000 2000 3000 4000 Dci LPS-DCs SR-DCs MI-DCs EA-DCs WS-DCs Pg/ml IL-8 IL surnageants 0 20 40 60 80 100 Dci LPS-DCs SR-DCs MI-DCs EA-DCs WS-DCs %expressionCD 0 20 40 60 80 LPS- DCs SR

  17. Ambivalencia e incertidumbre en las relaciones entre ciencia y sociedad

    Microsoft Academic Search

    J. Rubén Blanco; Juan Manuel Iranzo Amatriaín

    2000-01-01

    Ambivalence and uncertainty in the relationships between science and society The science-society relationship has gone by several circumstances along the history. At the present, their relationship is marked by the ambivalence and the uncertainty that it generates diverse upsets into and among both spheres. The advance of the techno-sci- entific sphere and the difference and the threat perception that society

  18. LA REVELATION DES FAITS DELICTUEUX ENTRE OBLIGATION ET APPLICATION

    E-print Network

    : audit, fraud revelation, independence, risk hal-01003933,version1-10Jun2014 Manuscrit auteur, publié'une étude qualitative menée sur le marché d'audit tunisien, d'analyser le comportement des auditeurs légaux double tranchant : un risque économique et un risque pénal. Mots clés : Audit, révélation de la fraude

  19. GPS, punto de contacto entre la Astronomía y otras disciplinas

    NASA Astrophysics Data System (ADS)

    Perdomo, R.

    En los primeros años de la pasada década, un grupo de Astrónomos de La Plata iniciaron trabajos de investigación en Geodesia Satelital. En esta presentación se propone repasar sus principales logros y situarlos en el contexto del desarrollo de la disciplina a nivel mundial. Por entonces las aplicaciones prácticas de la disciplina eran indirectas y solo evidentes para los especialistas. Los errores del Posicionamiento Satelital eran de varios metros y en posicionamiento relativo, del orden de medio metro. Estos resultados se lograban al cabo de varios días de medición continuada. En los años siguientes, el sistema GPS alcanzó su nivel operacional y produjo una revolución tanto en lo relacionado con los tiempos de medición como con las precisiones. El grupo de La Plata se desarrolló simultáneamente con GPS, lo que posibilitó su participación actual en diversos temas vigentes: aplicaciones de alta precisión para la materialización de sistemas terrestres de referencia, monitoreo de movimientos de la corteza, contribución con servicios internacionales para la determinación de movimientos tectónicos globales y regionales, monitoreo de la ionósfera a partir de la propagación de las señales, determinación de la ondulación del geoide a escala local, etc. También se generaron muchas aplicaciones prácticas algunas en tiempo real: navegación, apoyo a imágenes aéreas o satelitales, aplicaciones a la agricultura, catastro y ordenamiento territorial, apoyo a relevamientos geofísicos, etc.

  20. ATTRACTION ENTRE DEUX COURANTS PARALLLES INDFINIS Par A. LINARD.

    E-print Network

    Boyer, Edmond

    parvient en combinant l'inversion de lord Kelvin et le procédé alterné de Schwartz. Après avoir obtenu l'inversion de lord Kelvin et la mdthode altern6e de Schwartz. 2. Soient 0' et 0" les traces sur un plan normal à

  1. Um modelo de confianca entre servidores de e-mail

    Microsoft Academic Search

    Leonardo B. de Oliveira

    E-mail services are essential in the internet. However, the standard e-mail architecture presents problems that opens it to several threats. Alternatives have been proposed to solve some problems related with e- mail services, offering reliability and escalability to such systems. This work presents a distributed trust model, allowing to create dynamic and decentralized trusted server lists, through the temporary exclusion

  2. Inteligência emocional: validade discriminante entre MSCEIT e 16 PF

    Microsoft Academic Search

    Marilda Aparecida Dantas; Ana Paula Porto Noronha

    2006-01-01

    The present study aim was to investigate discriminative validity evidences between Mayer Salovey Caruso Emotional Intelligence Test (MSCEIT), and The 16 Personality Factors. The construct definition has been described as the person's ability to accurately perceive, express, understand and use his or her own emotions and the emotions of others as well manager them in order to facilitate the cognitive

  3. A Astronomia no Ensino Superior Brasileiro entre 1808 e 1889

    NASA Astrophysics Data System (ADS)

    Bretones, Paulo S.; Videira, Antonio A. P.

    2003-05-01

    Este artigo apresenta os principais eventos ocorridos na história do ensino de astronomia nos cursos superiores que existiram no Brasil desde a chegada da Família Real portuguesa em 1808 até o final do período monárquico. Para compor esse esboço histórico, utilizamos, principalmente, livros didáticos, regulamentos, decretos e leis responsáveis pelas organizações dos conteúdos oferecidos e das carreiras dos responsáveis pela disciplina. Na análise do material empregado, investigamos a presença de concepções filosóficas e científicas, que podem ter norteado os conteúdos disciplinares. Não realizamos nenhuma comparação com o ensino de astronomia em outros países. Concluímos mostrando que o estudo de astronomia, durante o período monárquico, foi mais direcionado para a formação d engenheiros do que astrônomos. Gostaríamos de observar que o presente artigo não tem a pretensão de abordar o assunto de maneira completa e detalhada.

  4. Article original Comparaison des ectomycorhizes naturelles entre le htre

    E-print Network

    Paris-Sud XI, Université de

    constitués de différentes hyphes : de petites hyphes mortes à parois très épaisses et denses aux électrons, et des hyphes plus grosses, vivantes, à parois moins épaisses. Ces différences morphologiques doivent correspondre à des fonctions différentes de ces deux types d'hyphes : les hyphes vivantes sont impliquées dans

  5. Comorbilidad entre trastorno bipolar y migraña: una revisión sistemática

    Microsoft Academic Search

    Germán Eduardo; Rueda Jaimes; Iván Augusto; Gaona Barbosa; Yuli Andrea Martínez Ladino

    2005-01-01

    Introduction: Migraine and bipolar disorder (BD) are prevalent conditions and of great relevance for the general population. Some studies have informed of their association but until now we don't know if it is real. Objective: To conduct a systematic review to evaluate the known evidence of the association between migraine and BD. Methods: A search was placed in Medline, Proquest

  6. Experiências internacionais de reforma agrária: entre socialismo e populismo? 1

    Microsoft Academic Search

    Eduardo Ernesto Filippi

    Nosso objetivo neste trabalho é o de expor ao leitor uma série de fatos que demonstram que a questão da terra é apenas a parte visível de uma multitude de fenômenos sociais e econômicos que nos conduzem a uma análise mais ampla. Diferentes ambientes institucionais, históricos, político-ideológicos, socioeconômicos, étnicos, sem esquecer a primazia das questões geopolíticas (vide o caso cubano),

  7. Homenaje a Emilio Carballido: Dramaturgo entre 45 años

    E-print Network

    Galvá n, Felipe

    1995-10-01

    calor abrumador del trópico mexicano. Son las diecinueve horas menos cinco y cuando entro a la sala chica del Teatro del Estado mi sorpresa sólo es atenuada por la pena de llegar casi a punto. Estoy arribando de un viaje de tres horas desde Puebla, la... mexicana era, por lo menos así se lo decían sus temblores que le impedían caminar más de prisa, razón suficiente para dar un paso en el tiempo en que normalmente daba tres. No tenía un lugar fijo en donde ubicarse, carecía pues de destino concreto y, lo...

  8. MÉXICO. DILEMA ENTRE LA ECONOMÍA Y LA INSEGURIDAD

    Microsoft Academic Search

    Guillermo Campos Ríos

    2012-01-01

    La poca efectividad en el combate al crimen organizado en México tiene su origen en diversas causas, que van desde la incapacidad de conceptualizarla, hasta la negación del sentido económico sobre el que se soporta la actividad delictiva en nuestro país, lo cual impide hacer propuestas de política más efectivas que no se reduzcan únicamente a los enfrentamientos violentos con

  9. Le logement à la Réunion : entre tradition et modernité

    Microsoft Academic Search

    Colette Pavageau; Michel Jacod

    1991-01-01

    [fre] Les cases, forme traditionnelle de l'habitat, représentent la moitié du parc de logements de l'île de la Réunion, voire davantage si on y ajoute les cases dégradées. Bénéficiant d'un confort encore très modeste par rapport aux normes métropolitaines, la qualité de ces habitations s'améliore pourtant, soit à l'initiative individuelle, soit à la suite de programmes sociaux de constructions neuves

  10. Las personas con diabetes deben lograr un balance entre los

    E-print Network

    en un lado del plato y los alimentos bajos en carbohidratos al otro lado. Karen Halderson, MPH, RD bajos en carbohidratos, manteniendo cada uno en su propio lado del plato o de la mesa. Comer vegetales en diferentes lados de su plato y ver si su plato está "balanceado". Sin embargo, muchas veces

  11. Hipertensão arterial entre trabalhadores de petróleo expostos a ruído

    Microsoft Academic Search

    Norma Suely Souto Souza; Fernando Martins Carvalho; Rita de Cássia Pereira Fernandes

    2001-01-01

    A cross-sectional study with a retrospective component was conducted to evaluate oc- cupational noise exposure as a potential risk factor for arterial hypertension among 775 workers from an oil-drilling industry. Hypertension was defined as ? 140\\/90mmHg. Occupational noise exposure was measured as: (1) exposure to sound pressure levels ? 85dbA for 10 years or more and (2) moderate-to-severe noise-induced hearing

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

    NSDL National Science Digital Library

    Pamela Soltis (University of Florida, Gainesville; )

    2006-03-01

    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.

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

    NASA Astrophysics Data System (ADS)

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

    2013-04-01

    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.

  14. 27ECOLOGIA COMPORTAMENTAL NA INTERFACE FORMIGA-PLANTA-HERBVORO Oecol. Bras., 13(1): 27-44, 2009

    E-print Network

    Oliveira, Paulo S.

    a biologia e o comportamento de larvas de Lepidoptera. Palavras-chave: Espaço livre de inimigos, Formicidae by ants. Because they are the principle predators among foliage, ants can strongly affect the communities on plants through antagonistic interactions (e.g. aggressiveness, predation), (2) ants can create an enemy

  15. 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

  16. Rapid in planta detection of Chalara fraxinea by a real-time PCR assay using a dual-labelled probe

    Microsoft Academic Search

    Renaud Ioos; Tadeusz Kowalski; Claude Husson; Ottmar Holdenrieder

    2009-01-01

    Chalara fraxinea is a fungus currently threatening ash trees (Fraxinus excelsior) in several European countries. This emerging pathogen was assigned to the EPPO’s alert list and therefore accurate detection\\u000a and identification tools are needed. Because of its slow growth rate on agar media and the frequent presence of fast-growing\\u000a saprotrophic fungi within the host tissue, classical isolation techniques are time-consuming

  17. An In Planta-Expressed Polyketide Synthase Produces (R)-Mellein in the Wheat Pathogen Parastagonospora nodorum

    PubMed Central

    Krill, Christian; Barrow, Russell A.; Chen, Shasha; Trengove, Robert; Oliver, Richard P.; Solomon, Peter S.

    2014-01-01

    Parastagonospora nodorum is a pathogen of wheat that affects yields globally. Previous transcriptional analysis identified a partially reducing polyketide synthase (PR-PKS) gene, SNOG_00477 (SN477), in P. nodorum that is highly upregulated during infection of wheat leaves. Disruption of the corresponding SN477 gene resulted in the loss of production of two compounds, which we identified as (R)-mellein and (R)-O-methylmellein. Using a Saccharomyces cerevisiae yeast heterologous expression system, we successfully demonstrated that SN477 is the only enzyme required for the production of (R)-mellein. This is the first identification of a fungal PKS that is responsible for the synthesis of (R)-mellein. The P. nodorum ?SN477 mutant did not show any significant difference from the wild-type strain in its virulence against wheat. However, (R)-mellein at 200 ?g/ml inhibited the germination of wheat (Triticum aestivum) and barrel medic (Medicago truncatula) seeds. Comparative sequence analysis identified the presence of mellein synthase (MLNS) homologues in several Dothideomycetes and two sodariomycete genera. Phylogenetic analysis suggests that the MLNSs in fungi and bacteria evolved convergently from fungal and bacterial 6-methylsalicylic acid synthases. PMID:25326302

  18. Development of a Mild Viral Expression System for Gain-Of-Function Study of Phytoplasma Effector In Planta.

    PubMed

    Hu, Sin-Fen; Huang, Yu-Hsin; Lin, Chan-Pin; Liu, Li-Yu Daisy; Hong, Syuan-Fei; Yang, Chiao-Yin; Lo, Hsiao-Feng; Tseng, Ting-Yu; Chen, Wei-Yao; Lin, Shih-Shun

    2015-01-01

    PHYL1 and SAP54 are orthologs of pathogenic effectors of Aster yellow witches'-broom (AYWB) phytoplasma and Peanut witches'-broom (PnWB) phytoplasma, respectively. These effectors cause virescence and phyllody symptoms (hereafter leafy flower) in phytoplasma-infected plants. T0 lines of transgenic Arabidopsis expressing the PHYL1 or SAP54 genes (PHYL1 or SAP54 plants) show a leafy flower phenotype and result in seedless, suggesting that PHYL1 and SAP54 interfere with reproduction stage that restrict gain-of-function studies in the next generation of transgenic plants. Turnip mosaic virus (TuMV) mild strain (TuGK) has an Arg182Lys mutation in the helper-component proteinase (HC-ProR182K) that blocks suppression of the miRNA pathway and prevents symptom development in TuGK-infected plants. We exploited TuGK as a viral vector for gain-of-function studies of PHYL1 and SAP54 in Arabidopsis plants. TuGK-PHYL1- and TuGK-SAP54-infected Arabidopsis plants produced identical leafy flower phenotypes and similar gene expression profiles as PHYL1 and SAP54 plants. In addition, the leafy flower formation rate was enhanced in TuGK-PHYL1- or TuGK-SAP54-infected Arabidopsis plants that compared with the T0 lines of PHYL1 plants. These results provide more evidence and novel directions for further studying the mechanism of PHYL1/SAP54-mediated leafy flower development. In addition, the TuGK vector is a good alternative in transgenic plant approaches for rapid gene expression in gain-of-function studies. PMID:26076458

  19. GERMINACIÓN DE SEMILLAS DE 32 ESPECIES DE PLANTAS DE LA COSTA DE GUERRERO: SU UTILIDAD PARA LA RESTAURACIÓN ECOLÓGICA

    Microsoft Academic Search

    Héctor Godínez; Arturo Flores-Martínez

    1999-01-01

    We present the results of different germination tests for 32 species of plants that potentially could be used for the recovery of degraded lands in the coast of Guerrero. The experimental treatments consisted in different forms of scarification and thermal stratification to break possible physiological dormancy; the treatments were chosen considering physical and biological characteristics of the seeds. For each

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

    NASA Technical Reports Server (NTRS)

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

    2002-01-01

    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.

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

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Stilbenoid phytoalexins such as resveratrol, play an important defense role in several plant species against pathogens such as Botrytis cinerea. In addition to their antimicrobial properties, resveratrol and related stilbenes have also generated considerable interest as nutraceuticals, due to their...

  2. In vivo trans-specific gene silencing in fungal cells by in planta expression of a double-stranded RNA

    PubMed Central

    2010-01-01

    Background Self-complementary RNA transcripts form a double-stranded RNA (dsRNA) that triggers a sequence-specific mRNA degradation, in a process known as RNA interference (RNAi), leading to gene silencing. In vascular plants, RNAi molecules trafficking occur between cells and systemically throughout the plant. RNAi signals can spread systemically throughout a plant, even across graft junctions from transgenic to non-transgenic stocks. There is also a great interest in applying RNAi to pathogenic fungi. Specific inhibition of gene expression by RNAi has been shown to be suitable for a multitude of phytopathogenic filamentous fungi. However, double-stranded (ds)RNA/small interfering (si)RNA silencing effect has not been observed in vivo. Results This study demonstrates for the first time the in vivo interference phenomenon in the pathogenic fungus Fusarium verticillioides, in which expression of an individual fungal transgene was specifically abolished by inoculating mycelial cells in transgenic tobacco plants engineered to express siRNAs from a dsRNA corresponding to the particular transgene. Conclusion The results provide a powerful tool for further studies on molecular plant-microbe and symbiotic interactions. From a biotechnological perspective, silencing of fungal genes by generating siRNAs in the host provides a novel strategy for the development of broad fungi-resistance strategies in plants and other organisms. PMID:20356372

  3. GENÉTICA E MELHORAMENTO DE PLANTAS POTENCIAL DE LINHAGENS DE POPULAÇÕES LOCAIS DE MILHO PIPOCA PARA SÍNTESE DE HÍBRIDOS(1)

    Microsoft Academic Search

    EDUARDO SAWAZAKI; MARIA ELISA A. G. ZAGATTO; JAIRO LOPES DE CASTRO; PAULO BOLLER GALLO; J OÃO; CARLOS CARDOSO; LUIZ ALBERTO SAES

    Médias dos principais caracteres agronômicos de top crosses foram utilizadas para avaliação do potencial de 82 linhagens da variedade de milho pipoca Guarani e 27 da variedade IAC-64 para síntese de híbridos, utilizando-se como testador um híbrido simples de linhagens da variedade South American Mushroom (SAM). Os top crosses foram distribuídos nos experimentos I, II e III, sendo desenvolvidos em

  4. Production and characterization of in planta transiently produced polygalacturanase from Aspergillus niger and its fusions with hydrophobin or ELP tags

    PubMed Central

    2014-01-01

    Background Pectinases play an important role in plant cell wall deconstruction and have potential in diverse industries such as food, wine, animal feed, textile, paper, fuel, and others. The demand for such enzymes is increasing exponentially, as are the efforts to improve their production and to implement their use in several industrial processes. The goal of this study was to examine the potential of producing polygalacturonase I from Aspergillus niger in plants and to investigate the effects of subcellular compartmentalization and protein fusions on its accumulation and activity. Results Polygalacturonase I from Aspergillus niger (AnPGI) was transiently produced in Nicotiana benthamiana by targeting it to five different cellular compartments: apoplast, endoplasmic reticulum (ER), vacuole, chloroplast and cytosol. Accumulation levels of 2.5%, 3.0%, and 1.9% of total soluble protein (TSP) were observed in the apoplast, ER, and vacuole, respectively, and specific activity was significantly higher in vacuole-targeted AnPGI compared to the same enzyme targeted to the ER or apoplast. No accumulation was found for AnPGI when targeted to the chloroplast or cytosol. Analysis of AnPGI fused with elastin-like polypeptide (ELP) revealed a significant increase in the protein accumulation level, especially when targeted to the vacuole where the protein doubles its accumulation to 3.6% of TSP, while the hydrophobin (HFBI) fusion impaired AnPGI accumulation and both tags impaired activity, albeit to different extents. The recombinant protein showed activity against polygalacturonic acid with optimum conditions at pH 5.0 and temperature from 30 to 50°C, depending on its fusion. In vivo analysis of reducing sugar content revealed a higher release of reducing sugars in plant tissue expressing recombinant AnPGI compared to wild type N. benthamiana leaves. Conclusion Our results demonstrate that subcellular compartmentalization of enzymes has an impact on both the target protein accumulation and its activity, especially in the case of proteins that undergo post-translational modifications, and should be taken into consideration when protein production strategies are designed. Using plants to produce heterologous enzymes for the degradation of a key component of the plant cell wall could reduce the cost of biomass pretreatment for the production of cellulosic biofuels. PMID:24970673

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

    Microsoft Academic Search

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

    2010-01-01

    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

  6. An in planta-expressed polyketide synthase produces (R)-mellein in the wheat pathogen Parastagonospora nodorum.

    PubMed

    Chooi, Yit-Heng; Krill, Christian; Barrow, Russell A; Chen, Shasha; Trengove, Robert; Oliver, Richard P; Solomon, Peter S

    2015-01-01

    Parastagonospora nodorum is a pathogen of wheat that affects yields globally. Previous transcriptional analysis identified a partially reducing polyketide synthase (PR-PKS) gene, SNOG_00477 (SN477), in P. nodorum that is highly upregulated during infection of wheat leaves. Disruption of the corresponding SN477 gene resulted in the loss of production of two compounds, which we identified as (R)-mellein and (R)-O-methylmellein. Using a Saccharomyces cerevisiae yeast heterologous expression system, we successfully demonstrated that SN477 is the only enzyme required for the production of (R)-mellein. This is the first identification of a fungal PKS that is responsible for the synthesis of (R)-mellein. The P. nodorum ?SN477 mutant did not show any significant difference from the wild-type strain in its virulence against wheat. However, (R)-mellein at 200 ?g/ml inhibited the germination of wheat (Triticum aestivum) and barrel medic (Medicago truncatula) seeds. Comparative sequence analysis identified the presence of mellein synthase (MLNS) homologues in several Dothideomycetes and two sodariomycete genera. Phylogenetic analysis suggests that the MLNSs in fungi and bacteria evolved convergently from fungal and bacterial 6-methylsalicylic acid synthases. PMID:25326302

  7. In planta expression of HIV1 p24 protein using and RNA plant virus-based expression vector

    Microsoft Academic Search

    Guichang Zhang; Carly Leung; Lisa Murdin; Benjamin Rovinski; K. Andrew White

    2000-01-01

    Plant viruses show significant potential as expression vectors for the production of foreign proteins (e.g., antigens) in\\u000a plants. The HIV-1 p24 nucleocapsid protein is an important early marker of HIV infection and has been used as an antigen in\\u000a the development of HIV vaccines. Toward developing a plant-based expression system for the production of p24, we have investigated\\u000a the use

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

    PubMed

    Rimando, Agnes M; Pan, Zhiqiang; Polashock, James J; Dayan, Franck E; Mizuno, Cassia S; Snook, Maurice E; Liu, Chang-Jun; Baerson, Scott R

    2012-04-01

    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. PMID:21902799

  9. Concentração de potássio na solução nutritiva e a qualidade e número de frutos de melão por planta em hidroponia

    Microsoft Academic Search

    Caciana Cavalcanti Costa; Arthur Bernardes Cecílio Filho; Rodrigo Luiz Cavarianni; José Carlos Barbosa

    2004-01-01

    The experiment was carried out in Jaboticabal-SP. The hybrid Bonus n 0 2 was cropped in randomized blocks design, in split-plot scheme and six replications. Fruit number per plant (2, 3, 4 e free fruit set) and potassium concentration in the nutrient solution (66, 115.5, 165 and 247.5mg L -1) were the studied factors. The increase of potassium concentration in

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

    E-print Network

    California at Berkeley, University of

    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

  11. PATHOGENICITY AND IN PLANTA MYCOTOXIN ACCUMULATION AMONG MEMBERS OF THE FUSARIUM GRAMINEARUM SPECIES COMPLEX ON WHEAT AND RICE

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Fusarium head blight (FHB), or scab, is a destructive disease of small grains caused by members of the Fusarium graminearum (Fg) species complex, comprised of at least nine distinct, cryptic species. Members of this complex are known to produce mycotoxins including the trichothecenes deoxynivalenol ...

  12. Effective and specific in planta RNAi in cyst nematodes: expression interference of four parasitism genes reduces parasitic success

    Microsoft Academic Search

    Anoop S. Sindhu; Tom R. Maier; Melissa G. Mitchum; Richard S. Hussey; Eric L. Davis; Thomas J. Baum

    2009-01-01

    Cyst nematodes are highly evolved sedentary plant endoparasites that use parasitism proteins injected through the stylet into host tissues to successfully parasitize plants. These secretory proteins likely are essential for parasitism as they are involved in a variety of parasitic events leading to the establishment of specialized feeding cells required by the nematode to obtain nourishment. With the advent of

  13. ESTIMACIÓN DEL ÁREA FOLIAR EN PLANTAS JÓVENES DE NÍSPERO (Manilkara achras (Miller) Fosberg) SOMETIDAS A DOS AMBIENTES DE LUZ1

    Microsoft Academic Search

    Norkys Meza

    Leaf area determination on sapodilla (Manilkara achras (Miller) Fosberg) young seedlings at two light environments Leaf area was determined for two groups of 15 young seedlings of sapodilla (Manilkara achras (Miller) Fosberg). The first group was located under a lath-house and the second one under a rain-shelter with transparent roof. The length width and leaf area were measured in each

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

    PubMed Central

    2013-01-01

    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

  15. Development of a Mild Viral Expression System for Gain-Of-Function Study of Phytoplasma Effector In Planta

    PubMed Central

    Liu, Li-Yu Daisy; Hong, Syuan-Fei; Yang, Chiao-Yin; Lo, Hsiao-Feng; Tseng, Ting-Yu; Chen, Wei-Yao; Lin, Shih-Shun

    2015-01-01

    PHYL1 and SAP54 are orthologs of pathogenic effectors of Aster yellow witches’-broom (AYWB) phytoplasma and Peanut witches’-broom (PnWB) phytoplasma, respectively. These effectors cause virescence and phyllody symptoms (hereafter leafy flower) in phytoplasma-infected plants. T0 lines of transgenic Arabidopsis expressing the PHYL1 or SAP54 genes (PHYL1 or SAP54 plants) show a leafy flower phenotype and result in seedless, suggesting that PHYL1 and SAP54 interfere with reproduction stage that restrict gain-of-function studies in the next generation of transgenic plants. Turnip mosaic virus (TuMV) mild strain (TuGK) has an Arg182Lys mutation in the helper-component proteinase (HC-ProR182K) that blocks suppression of the miRNA pathway and prevents symptom development in TuGK-infected plants. We exploited TuGK as a viral vector for gain-of-function studies of PHYL1 and SAP54 in Arabidopsis plants. TuGK-PHYL1- and TuGK-SAP54-infected Arabidopsis plants produced identical leafy flower phenotypes and similar gene expression profiles as PHYL1 and SAP54 plants. In addition, the leafy flower formation rate was enhanced in TuGK-PHYL1- or TuGK-SAP54-infected Arabidopsis plants that compared with the T0 lines of PHYL1 plants. These results provide more evidence and novel directions for further studying the mechanism of PHYL1/SAP54-mediated leafy flower development. In addition, the TuGK vector is a good alternative in transgenic plant approaches for rapid gene expression in gain-of-function studies. PMID:26076458

  16. A straightforward and reliable method for bacterial in planta transcriptomics: application to the Dickeya dadantii/Arabidopsis thaliana pathosystem.

    PubMed

    Chapelle, Emilie; Alunni, Benoît; Malfatti, Pierrette; Solier, Lucie; Pédron, Jacques; Kraepiel, Yvan; Van Gijsegem, Frédérique

    2015-04-01

    Transcriptome analysis of bacterial pathogens is a powerful approach to identify and study the expression patterns of genes during host infection. However, analysis of the early stages of bacterial virulence at the genome scale is lacking with respect to understanding of plant-pathogen interactions and diseases, especially during foliar infection. This is mainly due to both the low ratio of bacterial cells to plant material at the beginning of infection, and the high contamination by chloroplastic material. Here we describe a reliable and straightforward method for bacterial cell purification from infected leaf tissues, effective even if only a small amount of bacteria is present relative to plant material. The efficiency of this method for transcriptomic analysis was validated by analysing the expression profiles of the phytopathogenic enterobacterium Dickeya dadantii, a soft rot disease-causing agent, during the first hours of infection of the model host plant Arabidopsis thaliana. Transcriptome profiles of epiphytic bacteria and bacteria colonizing host tissues were compared, allowing identification of approximately 100 differentially expressed genes. Requiring no specific equipment, cost-friendly and easily transferable to other pathosystems, this method should be of great interest for many other plant-bacteria interaction studies. PMID:25740271

  17. Motivation Conditions in a Foreign Language Reading Comprehension Course Offering Both a Web-Based Modality and a Face-to-Face Modality (Las condiciones de motivación en un curso de comprensión de lectura en lengua extranjera (LE) ofrecido tanto en la modalidad presencial como en la modalidad a distancia en la web)

    ERIC Educational Resources Information Center

    Lopera Medina, Sergio

    2014-01-01

    Motivation plays an important in role in education. Based on the ten macro-strategies proposed by Dörnyei and Csizér (1998), this article analyzes the motivation conditions in a foreign language reading comprehension course using both a web-based modality and a face-to-face modality. A case study was implemented as the primary research method, and…

  18. Astronomia Juan Pablo Pinasco

    E-print Network

    Pinasco, Juan Pablo

    alrededor (Luna, Sol, Venus, Mercurio, Marte, Jupiter, Saturno, estrellas fijas) Juan Pablo Pinasco ( Depto Samos (310-230 a. C.) calcul´o los tama~nos del sol y la luna, y sus distancias a la tierra (con grandes distancia a la luna, y propone un modelo de su movimiento con epiciclos Postula un sistema para catalogar

  19. Identificacin de Humedales en Puerto Rico utilizando Imgenes Multiespectrales Lola Xiomara Bautista Rozo

    E-print Network

    Gilbes, Fernando

    , se utilizó clasificación supervisada con el algoritmo de Distancia Mahalanobis. Se analizaron 14 la vegetación de las áreas cercanas a los humedales. Keywords. Humedales, NDVI, Distancia Mahalanobis el gobierno del Estado Libre Asociado de Puerto Rico en el año de 2002 compró a la empresa Space

  20. Courtship behavior of different wild strains of Ceratitis Capitata (Diptera: Tephritidae)

    SciTech Connect

    Briceno, D. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria (Costa Rica); Eberhard, W. [Escuela de Biologia, Universidad de Costa Rica, Ciudad Universitaria and Smithsonian Tropical Research Institute (Costa Rica); Vilardi, J. [Dpto. de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires (Argentina); Cayol, J.-P. [Technical Cooperation Division, IAEA, Wagramerstrasse 5, P.O. Box 100 A-1400, Vienna (Austria); Shelly, T. [A. C. , D. , E. USDA/APHIS/CPHST, 41-650 Ahiki St. Waimanalo, HI 96795 (United States)

    2007-03-15

    This study documents differences in the courtship behavior of wild strains of Ceratitis capitata (Wiedemann) from Madeira (Portugal), Hawaii (U.S.A.), Costa Rica, and Patagonia (Argentina). Some traits showed large variations and others substantial overlaps. The angle at which the male faced toward the female at the moment of transition from continuous wing vibration and intermittent buzzing changed very little during the course of courtship in all strains, but males from Madeira tended to face more directly toward the female than other males. Females tended to look more, and more directly, toward the males as courtship progressed in all strains. The distance between male and female tended to decrease as courtship proceeded in all strains, but the distances at which males initiated continuous vibration, intermittent buzzing, and jumped onto the female were relatively less variable between strains, except for the strain from Costa Rica. Flies of Madeira courted for longer and the male moved his head and buzzed his wings longer than the other strains. (author) [Spanish] Este estudio documenta diferencias en el comportamiento de cortejo de cepas silvestres de Ceratitis capitata (Wied.) provenientes de Madeira (Portugal), Hawaii (Estados Unidos de Norte America), Costa Rica y Patagonia (Argentina). Algunas caracteristicas mostraron grandes variaciones y traslape substancial. Los angulos a los cuales los machos miraron hacia las hembras cambiaron muy poco en el momento de la transicion de la vibracion continua al zumbido intermitente durante el curso del cortejo en todo las cepas, pero los machos de Madeira tendieron a enfrentar mas directamente a la hembra que otros machos. Los angulos de las hembras disminuyeron claramente durante el cortejo en todas las cepas. La distancia entre el macho y la hembra tendio a disminuir conforme el cortejo continuaba en todas las cepas, pero las distancias a las cuales los machos iniciaron la vibracion continua, el zumbido intermitente, y el salto sobre la hembra eran relativamente menos variables entre cepas excepto la cepa de Costa Rica. Moscas de Madeira cortejaron mas tiempo y el macho moviosu cabeza y zumbaba sus alas mas prolongadamente que las otras cepas. (author)

  1. Use of medicinal plants among patients with diabetes mellitus type 2 in Morelos, Mexico (Uso de plantas medicinales por pacientes con diabetes mellitus tipo 2 en Morelos, México)

    Microsoft Academic Search

    Ofelia ROMERO-CERECERO; Hortensia REYES-MORALES; Lucía AGUILAR-SANTAMARÍA; Maira HUERTA-REYES; Jaime TORTORIELLO-GARCIA

    The aim of the study was the identification of the most frequently used plants by patients with DM2 with access to public health services in Morelos, Mexico. A questionnaire was employed with 259 patients with DM2 who regularly utilize medicinal plants as a complementary therapy, and another 259 patients who only use the pharmaceutical prescription in primary-care clinics from two

  2. Taxonomic Treatment of Solanum Section Petota (Wild Potatoes) in Catálogo de Plantas Vasculares del Cono Sur (Argentina, Chile, Paraguay, Uruguay, y sur del Brasil)

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Solanum section Petota (Solanaceae), which includes the cultivated potato (Solanum tuberosum) and its wild relatives, contains over 150 wild species distributed from the southwestern U.S.A. (38°N) to central Argentina and adjacent Chile (41°S). This catalog includes all species from the Southern Con...

  3. APROXBMACI6N A LA BIBLIOGRAFIA FLORISTICA BASICA DE PLANTAS VASCULARES DE LA PENINSULA IBERICA EISLAS BALEARES, II: 1989-1998

    E-print Network

    Moreno Saiz, Juan Carlos

    vasculares de la Peninsula Iberica e Islas Baleares, II: 1989-1998. Armies Jard Bot. Madrid 57(2): 341 and Balearic Islands, II: 1989- 1998. Armies Jard. Bot. Madrid 51(2): 341-356 (in Spanish). A new relation

  4. Interaction of VPg-Pro of Turnip mosaic virus with the translation initiation factor 4E and the poly(A)-binding protein in planta

    Microsoft Academic Search

    Simon Leonard; Catherine Viel; Chantal Beauchemin; Nicole Daigneault; Marc G. Fortin; Jean-Francois Laliberte

    2004-01-01

    The viral protein linked to the genome (VPg) of Turnip mosaic virus (TuMV) interacts in vitro with the translation eukaryotic initiation factor (eIF) 4E. In the present study, we investigated the consequence of TuMV infection on eIF4E expression. Two isomers are present in plants, namely eIF4E and eIF(iso)4E. Expression of the latter was detected in both TuMV-infected and mock-inoculated Brassica

  5. Analysis of RNA-Mediated Gene Silencing Using a New Vector (pKNOCKOUT) and an In Planta Agrobacterium Transient Expression System

    Microsoft Academic Search

    CHRISTOPHER IAN CAZZONELLI; JEFF VELTEN

    2005-01-01

    A hairpin RNA (hpRNA) vector, pKNOCKOUT (pKO) has been constructed to facilitate the analysis of posttranscriptional gene silencing (PTGS) in an Agrobacterium- mediated transient expression system developed for tobacco. The pKO binary vector was tested by cloning a firefly luciferase (Photinus pyralis) gene segment in sense (sFLUC), antisense (aFLUC), and inverted repeat (ihpFLUC) orientations. The inverted repeats of the target

  6. Transient co-expression of post-transcriptional gene silencing suppressors and ?-glucuronidase in harvested lettuce leaf tissue does not improve recombinant protein accumulation in planta

    Microsoft Academic Search

    Christopher W. Simmons; Jean S. VanderGheynst

    2007-01-01

    Agrobacterium-mediated gene transfer was used to co-express three virus-derived post-transcriptional gene silencing (PTGS) suppressors,\\u000a P19 from tomato bushy stunt virus and two species of helper component proteinase (HcPro) from tobacco etch virus (TEV) and\\u000a turnip mosaic virus, with ?-glucuronidase (GUS) in harvested lettuce leaf tissue to investigate whether GUS accumulation increases\\u000a in the presence of PTGS suppressors. Co-expression incubations were

  7. Analysis of RNA-mediated gene silencing using a new vector (pKNOCKOUT) and an in planta Agrobacterium transient expression system

    Microsoft Academic Search

    Christopher Ian Cazzonelli; Jeff Velten

    2004-01-01

    A hairpin RNA (hpRNA) vector, pKNOCKOUT (pKO) has been constructed to facilitate the analysis of posttranscriptional gene\\u000a silencing (PTGS) in anAgrobacterium-mediated transient expression system developed for tobacco. The pKO binary vector was tested by cloning a firefly luciferase\\u000a (Photinus pyralis) gene segment in sense (sFLUC), antisense (aFLUC), and inverted repeat (ihpFLUC) orientations. The inverted repeats of the\\u000a target gene are

  8. Pea lectin receptor-like kinase promotes high salinity stress tolerance in bacteria and expresses in response to stress in planta

    Microsoft Academic Search

    Amita Joshi; Hung Quang Dang; Neha Vaid; Narendra Tuteja

    2010-01-01

    The plant lectin receptor-like kinases (LecRLKs) are involved in various signaling pathways but their role in salinity stress\\u000a tolerance has not heretofore been well described. Salinity stress negatively affects plant growth\\/productivity and threatens\\u000a food security worldwide. Based on functional gene-mining assay, we have isolated 34 salinity tolerant genes out of one million\\u000a Escherichia coli (SOLR) transformants containing pea cDNAs grown

  9. A semi-quantitative RT-PCR method to readily compare expression levels within Botrytis cinerea multigenic families in vitro and in planta

    Microsoft Academic Search

    Mathias Choquer; Martine Boccara; Anne Vidal-Cros

    2003-01-01

    A straightforward and easy-to-apply semi-quantitative RT-PCR method was developed to study multigenic expression in the phytopathogenic fungus Botrytis cinerea. This procedure is based on the one-step reverse transcription-amplification of a specific transcript within total RNA and product amount determination by densitometric analysis of ethidium bromide fluorescence upon gel electrophoresis. The semi-quantitative analysis is achieved, at a fixed PCR cycle-number, within

  10. INCIDENCE, AGRESSIVENESS AND IN PLANTA INTERACTIONS OF BOTRYTIS CINEREA ANDOTHER FILAMENTOUS FUNGI QUIESCENT IN GRAPE BERRIES AND DORMANT BUDS IN CENTRAL WASHINGTON STATE

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Recovery of quiescent filamentous fungi from non-symptomatic grape berries and dormant buds demonstrated dominance of Alternaria, Aureobasidium, Cladosporium, Ulocladium and other dematiaceous hyphomycetes. Up to 78% of berries contained fungi prior to harvest. Botrytis cinerea was recovered from 0...

  11. Plaza de las Cortes, 2-7 planta. 28014 Madrid Tel: +34 91 360 12 00 se.cadep@crue.org V2.0.05/09/11

    E-print Network

    Fraguela, Basilio B.

    Conferencia de Rectores de las Universidades Españolas de la Calidad Ambiental, Desarrollo Sostenible y la y Química Agrícola y coordinadora del Plan de Desarrollo Sostenible de la Universidad de Santiago de Excoordinadora del Plan de Desarrollo Sostenible de la Universidad de Santiago de Compostela. Noelia López

  12. In planta production of two peptides of the Classical Swine Fever Virus (CSFV) E2 glycoprotein fused to the coat protein of potato virus X

    Microsoft Academic Search

    Gianpiero Marconi; Emidio Albertini; Pierluigi Barone; Francesca De Marchis; Chiara Lico; Carla Marusic; Domenico Rutili; Fabio Veronesi; Andrea Porceddu

    2006-01-01

    BACKGROUND: Classical Swine Fever (CSFV) is one of the most important viral infectious diseases affecting wild boars and domestic pigs. The etiological agent of the disease is the CSF virus, a single stranded RNA virus belonging to the family Flaviviridae. All preventive measures in domestic pigs have been focused in interrupting the chain of infection and in avoiding the spread

  13. In planta processing and glycosylation of a nematode CLE effector and its interaction with a CLV2-like receptor to promote parasitism

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Like other biotrophic plant pathogens, plant-parasitic nematodes secrete effector proteins into host cells to facilitate infection. Effector proteins that mimic plant CLAVATA3/ESR (CLE)-like proteins have been identified in several cyst nematodes including the potato cyst nematode (PCN); however, th...

  14. Phylogenetic Analysis of Downy Mildew Pathogens of Opium Poppy and PCR-Based In Planta and Seed Detection of Peronospora arborescens.

    PubMed

    Landa, Blanca B; Montes-Borrego, Miguel; Muñoz-Ledesma, Francisco J; Jiménez-Díaz, Rafael M

    2007-11-01

    ABSTRACT Severe downy mildew diseases of opium poppy (Papaver somniferum) can be caused by Peronospora arborescens and P. cristata, but differentiating between the two pathogens is difficult because they share morphological features and a similar host range. In Spain, where severe epidemics of downy mildew of opium poppy have occurred recently, the pathogen was identified as P. arborescens on the basis of morphological traits. In this current study, sequence homology and phylogenetic analyses of the internal transcribed spacer regions (ITS) of the ribosomal DNA (rDNA) were carried out with DNA from P. arborescens and P. cristata from diverse geographic origins, which suggested that only P. arborescens occurs in cultivated Papaver somniferum in Spain. Moreover, analyses of the rDNA ITS region from 27 samples of downy-mildew-affected tissues from all opium-poppy-growing regions in Spain showed that genetic diversity exists within P. arborescens populations in Spain and that these are phylogenetically distinct from P. cristata. P. cristata instead shares a more recent, common ancestor with a range of Peronospora species that includes those found on host plants that are not members of the Papaveraceae. Species-specific primers and a PCR assay protocol were developed that differentiated P. arborescens and P. cristata and proved useful for the detection of P. arborescens in symptomatic and asymptomatic opium poppy plant parts. Use of these primers demonstrated that P. arborescens can be transmitted in seeds and that commercial seed stocks collected from crops with high incidence of the disease were frequently infected. Field experiments conducted in microplots free from P. arborescens using seed stocks harvested from infected capsules further demonstrated that transmission from seedborne P. arborescens to opium poppy plants can occur. Therefore, the specific-PCR detection protocol developed in this study can be of use for epidemiological studies and diagnosing the pathogen in commercial seed stocks; thus facilitating the sanitary control of the disease and avoidance of the pathogen distribution in seeds. PMID:18943506

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

    PubMed Central

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

    2013-01-01

    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

  16. Vascular Streak Dieback of cacao in Southeast Asia detection and Melanesia: in planta detection of the pathogen and a new taxonomy

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Vascular Streak Dieback (VSD) disease of cacao (Theobroma cacao) in Southeast Asia and Melanesia is caused by a basidiomycete (Ceratobasidiales) fungus described in a monotypic genus as Oncobasidium theobromae (syn. =Thanatephorus theobromae). The symptoms of the disease include green-spotted chloro...

  17. Characterization of bacterial isolates from rotting potato tuber tissue showing antagonism to Dickeya sp. biovar 3 in vitro and in planta

    Microsoft Academic Search

    R. L. Czajkowski; Boer de W. J; Veen van J. A; Wolf van der J. M

    2012-01-01

    Possibilities for biocontrol of biovar 3 Dickeya sp. in potato were investigated, using bacteria from rotting potato tissue isolated by dilution plating on nonselective agar media. In a plate assay, 649 isolates were screened for antibiosis against Dickeya sp. IPO2222 and for the production of siderophores. Forty-one isolates (6Æ4%) produced antibiotics and 112 isolates (17Æ3%) produced siderophores. A selection of

  18. Characterization of bacterial isolates from rotting potato tuber tissue showing antagonism to Dickeya sp. biovar 3 in vitro and in planta

    Microsoft Academic Search

    R. L. Czajkowski; W. J. De Boer; J. A. Van Veen; J. M. Van der Wolf

    2012-01-01

    Possibilities for biocontrol of biovar 3 Dickeya sp. in potato were investigated, using bacteria from rotting potato tissue isolated by dilution plating on nonselective agar media. In a plate assay, 649 isolates were screened for antibiosis against Dickeya sp. IPO2222 and for the production of siderophores. Forty-one isolates (6·4%) produced antibiotics and 112 isolates (17·3%) produced siderophores. A selection of

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

    PubMed Central

    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

    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

  20. Sciences Participatives : du mutualisme entre science et socit. Exemple du Suivi Photographique des Insectes Pollinisateurs

    E-print Network

    participatifs en France ». Galaxy Zoo : « Welcome to Galaxy Zoo, where you can help astronomers explore : « 43 projets participatifs en France ». Galaxy Zoo : « Welcome to Galaxy Zoo, where you can help France ». Galaxy Zoo : « Welcome to Galaxy Zoo, where you can help astronomers explore the Universe

  1. RELATIONS ENTRE LA ?-GLOBULINMIE DU VEAU NOUVEAU-N ET SON TAT DE SANT.

    E-print Network

    Paris-Sud XI, Université de

    COMPOSITION DU COLOSTRUM ET DE LA PROTÉINÉMIE DE LA MÈRE Jacqueline DARDILLAT C. FOUCHER Station de 1>hysii, dans un élevage à forte mortalité, 113 plasmas de mères, 13 colostrums et go plasmas de veaux âgés de de colostrum congelé présentent une y-globulinémie plus faible que ceux qui ont têté leur mère. La

  2. DES LEUCOCYTES DU LAIT 655. expliquer les diffrences profondes constates entre les formules leuco-

    E-print Network

    Paris-Sud XI, Université de

    LIPO-DIÉRÈSE PULMONAIRE, OU UN ESSAI DE PHYSIO-ZOOTECHNIE. par J. BLIER, Docteur- Vété.rinai re'. Dans, alors que du beurre, on en manque toujours. La notion de physio-zootechnie. - Physiologie et zootechnie enclins à réunir leur art à la physiologie. Claude BERNARDavait vu dans la zootechnie, non seulement de la

  3. Alcohólicos Anónimos (AA): aspectos relacionados con la adherencia (afiliación) y diferencias entre recaídos y no recaídos

    Microsoft Academic Search

    Reyna Gutiérrez Reynaga; Patricia Andrade Palos; Alberto Jiménez Tapia; Gabriela Saldívar Hernández; Francisco Juárez García

    2009-01-01

    SUMMARY The work of Alcoholics Anonymous (AA) in fighting against alcohol abuse and alcoholism has placed it as an institution of great importance in Mexico and around the world. Although its labor has been subject for controversy, there is a lot of evidence that frequent attendance and affiliation to the groups and sessions can be very helpful for many individuals.

  4. SUR L'INTERACTION ENTRE NEUTRONS ET PROTONS Par J. SOLOMON.

    E-print Network

    Boyer, Edmond

    par 21t; nous pren- drons pour unités de longueur et d'énergie Les mesures des grandeurs rapportées à. Nous revien- drons là-dessus un peu plus loin. En tout cas il est intéressant de remarquer que toutes

  5. L' upwelling de la côte atlantique du Maroc entre 1994 et 1998

    NASA Astrophysics Data System (ADS)

    Makaoui, Ahmed; Orbi, Abdelattif; Hilmi, Karim; Zizah, Soukaina; Larissi, Jamila; Talbi, Mohammed

    2005-12-01

    The pelagic ecosystem of the Moroccan Atlantic coast is influenced by the spatiotemporal variability of upwelling. The changes in the physicochemical and biological parameters as well as their interrelationship and regrouping by the principal components analysis allowed us to subdivide the Atlantic coast in four active areas: two areas located at the north of Cape Juby (28°N), characterised by a summery activity and two areas located at the south, active permanently, with a variable intensity. To cite this article: A. Makaoui et al., C. R. Geoscience 337 (2005).

  6. La formation a Bukavu au Zaire: une course entre l'education et la catastrophe

    NASA Astrophysics Data System (ADS)

    Balegamire, Bazilashe Juvénal

    1996-11-01

    A description of the socio-educational situation in Bukavu since the colonial era clearly shows why the population has sought means of overcoming the gradual abandonment by the Zairean State of its responsibilities, which has been aggravated by the large-scale influx into Kivu, in Eastern Zaire, of refugees from Rwanda and Burundi and of Zaireans who has been living in those countries for some years. These means are principally trade occupations, small-time selling, short-term vocational training and higher and university education at private institutions which are financed locally and/or by funds from the North. A new approach has been deveoped, that of training the trainers working for non-governmental development organisations. Trainers of trainers have been recruited locally among the many graduates of the Higher Institutes of Education and Rural Development, which have been affected by unemployment and the miserable salaries which the State offers to its employees. The trainers of trainers could be trained by the Higher Institute of Rural Development, making the largest possible use of local skills. However, such training should be one of a set of reforms of the Zairean education system. All of this only makes sense if Zaire and its neighbours urgently defuse present socio-political tensions so that all of our populations can peacefully and resolutely engage in the healthy transformation of our societies.

  7. Thse de doctorat en cotutelle entre Universit Pierre et Marie Curie

    E-print Network

    Paris-Sud XI, Université de

    difficili che di certo non sono mancati in questi tre anni. Infine, ringrazio la mia famiglia e i miei and transport whistler waves by means of a highly oblique, propagating nonlinear carrier wave. The present study

  8. Physiologie et manipulations expérimentales des interrelations entre la douleur et le sommeil

    Microsoft Academic Search

    M. Brousseau; P. Mayer; G. Lavigne

    2003-01-01

    Résumé  Dans le quotidien, l'être humain associe intuitivement un sommeil de bonne qualité au bon fonctionnement physiologique et\\u000a psychologique. D'autre part, la douleur entraîne souvent un sommeil de mauvaise qualité, voire de l'insomnie. Parmi les patients\\u000a souffrant de douleur chronique (p. ex. lombalgie, douleur orofaciale, fibromyalgie ou arthrite rhumatoïde), près des deux\\u000a tiers rapportent que leur sommeil n'est pas suffisamment récupérateur.

  9. Relations entre la phosphorylation de molcules amines et leur activit sur l'absorption du calcium

    E-print Network

    Paris-Sud XI, Université de

    calcium Sylviane TARDIVEL A. TOURE, Alice DIGAUD, P. FOURNIER EPHE, Physiologie-Métaholisme minéral des the phosphorylation of aminated molecules and their action on calcium absorption. Various amino acids and guanidines in ileal ligated loops, increased intestinal calcium absorption in the rat. L-arginine was effective per os

  10. Prsident, fais moi rire ! La communication politique entre peur et humour.

    E-print Network

    Boyer, Edmond

    in political communication Abstract : This research compares the impact of two attention-getting tactics communication literature, we propose a set of hypothesis within political communication and test them using it is used on a regular basis. Key words : Political communication ­ political marketing ­ feelings ­ humor

  11. ENTR 321-001: New Venture Planning CRN 11765, Fall Semester 2013

    E-print Network

    Young, Paul Thomas

    much more conservative. In today's economic and investment climate, whether a proposal for funding created by self-organized teams recognizes this fact. The self-organization of teams includes the freedom. Departmental Statement of Excellence The Department of Management and Entrepreneurship believes org

  12. Un modle simpliciel pour l'htrognit smantique entre agents informationnels

    E-print Network

    Sansonnet, Jean-Paul

    monde ouvert » de Hewitt En 1986, dans « Extra terrestrials : Science and Alien intelligence » Marvin ramenant à ce que nous aurions en commun avec les extra terrestres, définissant trois cas typiques : ­ Non

  13. Trois bicentenaires : Hume, Condillac, Smith. Adam Smith entre le marginalisme et le marxisme

    Microsoft Academic Search

    Gérard R. Pelletier

    1977-01-01

    It is not easy to understand why, and how, orthodox economists who do not believe either in the labor-theory or in the cost-theory of value, continue to favor Adam Smith's Wealth of Nations, but forget such economists as Condillac, whose value theory is nearer to theirs and whose bicentenary we also commemorate.

  14. COTENDENCIA NO LINEAL ENTRE TIPO DE INTERÉS Y TASA DE INFLACIÓN

    Microsoft Academic Search

    ROSA BADILLO AMADOR; JORGE BELAIRE-FRANCH

    2003-01-01

    En el presente trabajo analizamos la posibilidad de que se produzca el efecto Fisher en la economía española, teniendo en cuenta que tanto el tipo de interés nominal como la tasa de inflación en España pueden pre- sentar cambios estructurales ocasionados por algún shock exógeno. La no consideración de estos cambios estructurales lleva a la mayor parte de es- tudios

  15. RELAÇÃO ENTRE DANOS MECÂNICOS, TRATAMENTO FUNGICIDA E INCIDÊNCIA DE PATÓGENOS EM SEMENTES DE MILHO

    Microsoft Academic Search

    JOSÉ LUÍS DE MARCHI; JOSÉ OTÁVIO; MACHADO MENTEN; MARIA HELOISA DUARTE

    with the objective of studying the relationship between mechanical da- mage occurrence, fungicide treatment and pathogens incidence in maize seeds, three seed samples of CO32 hybrid with different levels of mechanical damages were evalua- ted regarding its physiological and sanitary characteristics, with and without fungicide treatment. Therefore, the three seed samples, without any kind of fungicide treatment were submitted to

  16. Extraction des relations temporelles entre vnements mdicaux dans des comptes rendus hospitaliers

    E-print Network

    Pierre Zweigenbaum1 Xavier TANNIER1,2 1 LIMSI­CNRS, Orsay 2Univ. Paris-Sud, Orsay RÉSUMÉ Le défi i2b2/VA in clinical documents The 2012 i2b2/VA challenge focused on the detection of temporal relations between events-21 Juin, Les Sables d'Olonne 643 c ATALA #12;automatique. Les tâches et corpus du défi i2b2/VA 2012 (Sun

  17. Correspondencias estructurales y semánticas entre El gesticulador y Corona de sombra

    E-print Network

    Scarano, Laura Rosana

    1988-10-01

    justicia, donación de la vida y verdad (a pesar del paradojal enmas caramiento y las dualidades de identidad). Sin embargo, a pesar de estas convenciones iluminadoras que lo llevan a reinterpretar la historia a la luz de una escala axiológica y ética...

  18. Vol. 2, No. 2 CMNS INNovatorS aNd ENtrEprENEurS

    E-print Network

    Lathrop, Daniel P.

    Ion Issue #12;Dear Colleagues, Students, Graduates and Friends, Since his arrival at the university university, Wallace has challenged us to become equally renowned as an innovation and entrepreneurship (I to the university, is a role model for all of us. She demonstrates unwavering integrity, a straightforward approach

  19. INTERFRENCE ENTRE VERMIFUGATION ET IMMUNIT DANS LES STRONGYLOSES GASTRO-INTESTINALES DU MOUTON

    E-print Network

    Paris-Sud XI, Université de

    -INTESTINAL STRONGYLOSIS. ― Groups of very similar sheep (breed, sex, age, hemoglobin type, family) were immunised of them still remain in the gut of animals; they have been expulsed by dosage of anthelminthics. Animal animals, immune non-drenched animals and non-immune animals); the best fitting estimated equation

  20. TAMANHO DO CONJUNTO DE CONSIDERAÇÃO: UM ESTUDO COMPARATIVO ENTRE TRÊS CATEGORIAS DE SERVIÇOS

    Microsoft Academic Search

    Arcanjo Ferreira de Souza; Tatiana Bittencourt Gouveia

    Because of the diversity of products and brands, consumers look for a way to simplify and ease choice decisions. The model of consideration sets tries to explain that phenomenon through a dynamics, in which consumers select brands for a reduced set decision. This survey aims to describe the results of a comparative study between fast-food outlets, gyms and clinical labs.

  1. OS ANOS DOURADOS DO CAPITALISMO: UMA TENTATIVA DE HARMONIZAÇÃO ENTRE AS CLASSES1

    Microsoft Academic Search

    PAULO BALANCO; EDUARDO COSTA PINTO

    Resumo: Este artigo discute o padrão de acumulação dos anos dourados, procurando situá-lo como resultados do processo dialético das leis de movimento do valor. Nesse sentido, as transformações econômicas, culturais e institucionais dos anos dourados, mediante as quais foram concedidos certos benefícios à classe trabalhadora funcionaram com estratégias defensivas do capital diante da crise de dominação provocada, em grande medida,

  2. Ensino de Astronomia: a parceria entre a Diviso de Astrofsica/INPE & Decolar

    E-print Network

    . S. N. Pinto1 , A. M. Zodi1 , D. F. A. Bessada1 , A. Bernui2 , I. S. Ferreira3 , J. C. T. Galvez1 , K1 , B. H. G. Rodrigues1 , C. V. Rodrigues1 , M. O. C. Salinas3 , S. O. Santos4 , T. Monfredini1 , C. M. Godoi4 , E. Martioli1 , O. D. Miranda1 , M. Okada5 , W. D. Paiva4 , E. S. Pereira1 , P. F. Polido

  3. Percepción directiva de las relaciones entre responsabilidad social y ética empresarial

    Microsoft Academic Search

    Óscar Rodríguez Ruiz; José Fernández Menéndez; Juan Ignacio Martín-Castilla

    La responsabilidad social corporativa y la ética empresarial son temas comunes en la literatura de management. Pese a que en muchas ocasio- nes la delimitación conceptual de estos términos es ambigua, resulta indu- dable que cada uno de ellos tiene un significado diferente. Este trabajo pretende profundizar en la percepción directiva de la responsabilidad so- cial y la ética. Para

  4. RELATION ENTRE CONCENTRATION CELLULAIRE DU LAIT INDIVIDUEL, PRODUCTION LAITIRE, ET SENSIBILIT DES VACHES

    E-print Network

    Paris-Sud XI, Université de

    VACHES AUX INFECTIONS MAMMAIRES F. SERIEYS Institut Technique de l'Élevage Bovin, «Monvoisin», Cidex 71 the cell concentration in the milk from individual cows, their susceptibility to mastitis and milk susceptibility to mastitis. The corrected milk production fell linearly with the logarithmic mean

  5. Model-Based Functional Performance Testing of AHU in Kista Entre 

    E-print Network

    Carling, P.; Isakson, P.

    2004-01-01

    itself. The heat recovery efficiency depends strongly on the heat capacity rate ratio between air and liquid (Incropera and DeWitt, 1996, Gudac et al. 1981, Balen et al., 2003, Bennet et al. 1994, etc.) and fluid properties (Zeng et al., 1992... maximum efficiency when the heat capacity rates are balanced (Cmin/Cmax=1). The maxima only exists for large values on the over-all number of transfer units i.e. for large coils in combination with a moderate Cmin. In academic research projects...

  6. Relation entre la force isocinétique, le saut et le sprint chez le footballeur de haut niveau

    Microsoft Academic Search

    M. Dauty; F. Bryand; M. Potiron-Josse

    2002-01-01

    Purpose – The aim of this study is to appreciate the relation between sprint, jump and knee isokinetic torque in high-level soccer players.Methods – Twenty soccer players (first french national division) were evaluated by sprint and jump tests. Extensors and flexors isokinetic torque was measured by a Cybex Norm dynamometer. Relations between sprints, jumps and isokinetic peak torque were appreciated

  7. Relación entre disfunción de los músculos espiratorios e hiperinflación dinámica en la EPOC avanzada

    Microsoft Academic Search

    Susana Mota; Rosa Güell; Esther Barreiro; Pere Casan; Joaquim Gea; Joaquín Sanchis

    2009-01-01

    Background and objectivesDynamic hyperinflation (DH) and expiratory flow limitation (EFL) are physiologically linked and seem to be involved in the genesis of dyspnea and the quality of life (QL) impairment in chronic obstructive pulmonary disease (COPD). Advanced COPD patients often show expiratory muscles dysfunction that could be involved in DH development. Aim: Study the relationships between expiratory muscle dysfunction and

  8. INTERACCIÓN ENTRE TROGIDOS (COLEOPTERA: TROGIDAE) Y TORTUGAS MARINAS (REPTILIA: CHELONIIDAE) EN EL PACIFICO MEXICANO

    Microsoft Academic Search

    María C. ROSANO-HERNÁNDEZ; Cuauhtémoc DELOYA

    From 1987 to 2000, great embryo and hatchling mortality (>70%) of sea turtles (Lepidochelys) has been reported in the nesting beach La Escobilla, Oaxaca, México. The embryo death in this beach was attributed by some authors mainly to the egg predation by a beetle belonging to the family Trogidae. Taxonomic examination confirmed that the beetle at La Escobilla was Omorgus

  9. ENTRE LA VEILLE STRATEGIQUE ET L'INNOVATION, LA DEMARCHE DE VEILLE CREATIVE

    E-print Network

    Paris-Sud XI, Université de

    créative emprunte aux wargames sur plateau Stéphane GORIA goria@loria.fr Equipe SITE, Laboratoire LORIA visualization, wargame. Palabras clave : Inteligencia creativa, inteligencia competitiva, ingeniería del

  10. La educación financiera en estudiantes de educación básica. Un diagnóstico comparativo entre escuelas urbanas y rurales

    Microsoft Academic Search

    Laura Azucena Huchín Flores; Javier Damian Simón

    2011-01-01

    Este trabajo muestra un diagnóstico cuyo objetivo fue conocer y comparar el nivel de Educación Financiera que han obtenido del contexto los estudiantes del quinto y sexto grado de tres escuelas primarias del Municipio de San Juan Bautista Tuxtepec, Oaxaca, con cuyos resultados se pretende realizar una propuesta didáctica. La investigación fue exploratoria, descriptiva y transversal, utilizando el estudio de

  11. Relación entre turismo, género y sexo. El caso de Buzios - Brasil

    Microsoft Academic Search

    Juana A. Norrild

    2007-01-01

    The relationship between sex and tourism has followed different paths starting from the Gay \\/ Lesbian friendly market to nudist tourism or prostitution. Not withstanding, there are sill few initiatives to stop this kind of tourism that brings with its huge social problems and scandalizes the public opinion. This is probably due to the fact that from an historic point

  12. Relação entre lordose lombar e desempenho da musculatura abdominal em alunos de fisioterapia

    Microsoft Academic Search

    Roberta Ramos Pinto; S. Guerino; Daniela Bittencourt Consolin; Ana Cláudia; Violino da Cunha

    SUMMARY Knowing that the middle of the corporal weight is in stable balance on lumbar spine, all muscles that estebilize this place are important, in special abdominals muscles. This muscles attire lateral, anterior and posterior walls of trunk, they work that on band that contains all visceras, they help in balance and work directement in the static and dynamic of

  13. " DIRE SANS DIRE L'GE CLASSIQUE : ENTRE LANGAGE GESTUEL ET SURCODAGE "

    E-print Network

    Paris-Sud XI, Université de

    'une part, d'âge de la transparence et, d'autre part, d'âge du code, voire du surcodage. Michel Foucault palier épistémo- logique que constituerait cette courte période2 . Le balancement évo- 1 Michel Foucault

  14. Dominicanas entre La Gran Manzana y Quisqueya: Family, Schooling, and Language Learning in a Transnational Context

    ERIC Educational Resources Information Center

    Rodriguez, Tracy

    2009-01-01

    Drawing from a one-year qualitative research study, this article explores the transnational lives and experiences of three young women and their little sisters in New York with close ties to the Dominican Republic. Using ethnographic research methods--life history interviews, focus groups, participant observation, and document analysis, I examine…

  15. La relación entre las agencias de comunicación en mercadeo y sus clientes: visión de las agencias

    Microsoft Academic Search

    Claudia Margarita Gómez Ramírez

    2009-01-01

    Resumen En este estudio se pretende identificar el actual comportamiento de los factores para el éxito y los amenazantes que inciden sobre la continuidad de una cuenta, una relación y por tanto del negocio desde la percepción de las agencias de publicidad, medios, eventos y relaciones públicas. Se examinaron puntos tales como las expectativas, el desempeño, la vulnerabilidad de la

  16. 83 DOSSIER SPCIAL Paris Mtropole "Le dfi de la gouvernance" LA CONSTRUCTION MTROPOLITAINE ENTRE POLITIQUES CU

    E-print Network

    Boyer, Edmond

    redistri- bution de revenus vers les autres villes et régions demeure massive. Les marges de manoeuvre valo- risera la solidarité et la reconnaissance mutuelle (Préteceille, 2006) ? La recherche sur les présent dans les agendas de gouvernance des grandes villes contemporaines. Il s'agit, en

  17. Les Cloisons Etanches entre les Didactiques (The Tight Partitioning of Methods).

    ERIC Educational Resources Information Center

    Menting, Jan P.

    Foreign language instruction should focus on developing in students a coordinated set of basic language learning skills, the acquisition of which would make it possible for the student to learn more than one language. Such an instructional package would fit well into the communicative approach to language instruction, and would provide a common…

  18. Estudo comparativo entre as técnicas de filtro de cores e de polarização

    Microsoft Academic Search

    Murilo Sousa de Meneses; André Vieira da Cruz; Izara de Almeida Castro; Ari A. Pedrozo

    RESUMO - Atualmente há grande necessidade de maior disponibilização de material didático no ensino médico. A escassez de segmentos anatômicos e a toxicidade dos conservantes, como o formol, têm gerado uma busca intensa por novos meios de demonstração da anatomia humana. Como solução para esta dificuldade pode- se utilizar imagens tridimensionais (3D), que facilitam o processo de aprendizado. Este estudo

  19. ENTR 320-001: Principles of Entrepreneurship, CRN 10854 Fall Semester 2013

    E-print Network

    Young, Paul Thomas

    , M., & Crane, F. G. (2011). Entrepreneurship: An innovator's guide to startups and corporate ventures models and plans. #12;Learning Goals Addressed This course directly addresses four Learning Goals established by the School of Business: Effective communication. The course provides opportunities for both

  20. Analyse des Correlations entre Pannes dans les Syst`emes de Stockage Pair-`a-Pair

    E-print Network

    Paris-Sud XI, Université de

    `eme (calcul de tous les moments) mais aussi de le simuler efficacement, car il est ind´ependant de la taille, as they usually have a lower storage space overhead than replication [3]. We study the following questions: How system. We provide a mathematical analysis This work was partially funded by the European project IST FET

  1. Approche mthodologique de l'tude des relations entre la structure spatiale du peuplement ligneux

    E-print Network

    Paris-Sud XI, Université de

    and a gradient of regularization of forest stands. Correspondence analysis of floristic data points out five BRAAK, 1986) shows that the gradient of canopy opening determines floristic variations. This method BRAAK (1986) permet de montrer que les variations de la composition floristique du sous-bois sont

  2. L'EVALUATION DES PERFORMANCES : UNE COMPARAISON ENTRE LES PRATIQUES DES

    E-print Network

    Boyer, Edmond

    année à des entreprises américaines par L. Maisel en partenariat avec l'AICPA (American Institute'utiliser des indicateurs financiers et non monétaires dans l'évaluation de la performance des entreprises the use of financial and non-monetary information in the measurement and the analysis of firms

  3. Constructions d'un stigmate sanitaire : la drpanocytose, entre situations locales et globales

    E-print Network

    Paris-Sud XI, Université de

    that affect social relationships (Goffman, 1963). Sickle-cell anemia, a serious genetic disease originally disease, sickle cell disease and trait, social history of health, globalization, stigmata, twentieth

  4. ANÁLISIS DE LAS RELACIONES ENTRE LA INTELIGENCIA EMOCIONAL PERCIBIDA Y LA SALUD MENTAL EN LA PAREJA

    Microsoft Academic Search

    M. T. Sánchez; J. Montañés

    2006-01-01

    This study analyzes the relationship between Perceived Emotional Intelligence (PEI) and Mental Health in the couple's members. 73 couples between 40 and 64 years old composed the sample. The instruments used to measure the variables of interest were the Trait Meta Mood Scale-24 (TMMS-24; Fernández-Berrocal, Ex- tremera, & Ramos, 2004) and the Scale of Mental Health-5 (MH-5; Alonso, Prieto, &

  5. Deteccion de reutilizacion de codigo fuente entre lenguajes de programacion en base a la

    E-print Network

    Rosso, Paolo

    Polit´ecnica de Valencia, Dpto. de Sistemas Inform´aticos y Computaci´on Camino de Vera s/n, E-46022 diferente. En este art´iculo proponemos un sistema que intenta detectar la reutiliza- ci´on de c existencia de enormes cantidades de informaci´on al alcance de cualquier usuario. Las obras publicadas en

  6. La universidad y la educacin, entre el multimedia y la mundializacin.

    E-print Network

    Paris-Sud XI, Université de

    apropien de informaciones, de procedimientos y de sistemas de representación. Estas organizaciones a considerar los sistemas educativos y universitarios como organizaciones que dependen, por una parte, de los último, y ésta es una de las características que las diferencia del sistema de producción, permitir la

  7. SIMILITUDES ENTRE LAS EMPRESAS QUE IMPLEMENTAN LA CONTABILIDAD POR ÁREAS DE RESPONSABILIDAD

    Microsoft Academic Search

    Martha Ríos Manríquez; Jacobo Oñate Martínez; Enrique Ramos Juárez

    2008-01-01

    Este estudio forma parte de un proyecto que analiza los sistemas de contabilidad utilizadas por las empresas del municipio de Celaya, Guanajuato, México. En este reporte se presenta un análisis comparativo a cuatro empresas que tienen implementada la contabilidad por áreas de responsabilidad, evaluando la utilización de herramientas informáticas, sistemas de información, su relación con el sistema y los objetivos

  8. Conception:CommeUnSoleil-impression:servicecommunicationetditionUniversitParis13-septembre2011 (entre libre et gratuite)

    E-print Network

    Banderier, Cyril

    la planète aujourd'hui... et comment la nourrir demain ? Cette installation de 21 panneaux explore médecine préventive et du département des sports de l'Université Paris 13 vous propose : test d sports et la médecine préventive de l'Université Paris 13 et l'association Science ouverte de Drancy. Ne

  9. Paysage et Landschaft : incomprhensions et malentendus entre les gographes allemands et franais dans les annes Trente.

    E-print Network

    Paris-Sud XI, Université de

    géographie sont organisés dans le cadre de l'Union géographique internationale (UGI), organisation encore pérenne et qui regroupe les géographes à l'échelle mondiale2 . L'UGI est créée à Bruxelles le 27 juillet. A la base de l'UGI se trouvent les comités nationaux représentant les divers Etats adhérents, qui se

  10. 32 - EntrEtiEns dE Bichat 2011 d'Orthophonie

    E-print Network

    Boyer, Edmond

    étroitement liée à l'état patholo- gique du larynx. Cette aide objective au diagnostic de la nature de la of the larynx. This objective evaluation of the sin- ging voice disorders is accessible to any cli- nical

  11. Interacción entre Susceptibilidad Hipnótica y Experiencias Disociativas en una Población que Reporta Experiencias Anomalo\\/Paranormales

    Microsoft Academic Search

    Alejandro Parra; Juan Carlos Argibay

    2006-01-01

    There are reliable statistical relationships between hypnotic susceptibility, psychological dissociation, and paranormal experiences. We hypothesized that subjects with greatest hypnotic susceptibility would report the most paranormal experiences. Similarly, we expected that persons with the most dissociative experiences would report the most paranormal experiences. We also hoped to find interactions between hypnotic susceptibility and dissociation with paranormal experiences. We administered the

  12. Contamination des mollusques bivalves par des phycotoxines : interactions entre niveaux de toxicit et rponses physiologiques

    E-print Network

    Boyer, Edmond

    ), les toxines paralysantes (PSP) et les toxines amnésiantes (ASP). Les toxines DSP et PSP ont été dus aux DSP et d'autre part au risque élevé présenté par les toxines PSP. La perte économique

  13. CARACTERIZACIÓN MORFOLÓGICA Y RELACIONES FENÉTICAS ENTRE ESPECIES DE LOS ÓRDENES LILIALES Y POALES

    Microsoft Academic Search

    Carmen Benítez de Rojas

    2004-01-01

    Morphological characterization and phenetic relations between species of the orders Liliales and Poales Nineteen species belonging to eight families from the order Liliales (Cronquist, 1988) and two species from the family Poaceae, subfamily Bambusoideae (Judd et al., 1999) were studied to make a morphological characterization, for comparing and arguing possible phenetical relations. Specimens were collected in different regions of Venezuela.

  14. Alliance stratgique entre PME et Grande Firme Internationale : Quel rle pour le middle manager ?

    E-print Network

    Boyer, Edmond

    between Small and Medium-sized enterprises and international large-size company: which role for middle manager? Abstract: The internationalization of Small and Medium-sized Enterprises doesn't any more alliances, Small and Medium-sized Enterprises (SME), middle manager, large-size companies (LSC), corporate

  15. BEMS-Assisted Seasonal Functional Performance Testing in the Initial Commissioning of Kista Entre and Katsan 

    E-print Network

    Isakson, P.; Wetterstrom, P.; Carling, P.

    2004-01-01

    made a little Matlab program that extracts information from this text file and output csv-files, which we imported to MsWord, see Figure 1. We use this table as a reference when we analyze data, and debug trend-logs. Figure 1. Two samples from our...

  16. INTERACTION ENTRE DISLOCATIONS ET DFAUTS PONCTUELS CRS PAR BOMBARDEMENT LECTRONIQUE DANS L'ARGENT

    E-print Network

    Boyer, Edmond

    1978) Résumé. 2014 Le module élastique et le frottement intérieur de l'argent bombardé par des effect. Abstract. 2014 The elastic modulus and internal friction of silver irradiated by electrons [6], mais formellement, les équations qui donnent le frottement intérieur et le défaut de module

  17. Ecologie L'cologie est l'tude des interacons entre

    E-print Network

    Chave, Jérôme

    -1875): du monde staque (créé par Dieu) à un monde dynamique Louis Agassiz (1807-1873): mise en évidence des périodes glaciaires => inié une généraon de découvreurs de l'ordre vivant Carl von Linné 1707-1778 Georges-Louis Leclerc de Buffon (1707

  18. Communiqu de Nouvel accord-cadre entre le ministre de la Culture et de la

    E-print Network

    van Tiggelen, Bart

    la société (archéologie, architecture, histoire, histoire de l'art et musicologie, histoire des dans le domaine de l'architecture, des arts plastiques et du spectacle vivant la priorité donnée par les Etats membres de l'Union Européenne à la recherche sur le patrimoine culturel, via l'initiative de

  19. Correlaciones entre sistemas del Universo Local y el Fondo de Radiación Cósmica

    NASA Astrophysics Data System (ADS)

    Piccirilli, M. P.; Luparello, H. E.; García Lambas, D.; Vucetich, H.; Lares, M.; Domínguez Romero, M. J. L.

    In this paper we show some preliminary results of a work in progress, which is aimed to analyse the correlation between the fluctuations in the Cosmic Microwave Background radiation and structure in the Local Uni- verse. We concentrate here on large-scale regions corresponding to future virialized superstructures. For this purpose, we construct appropriate maps with SDSS data and WMAP maps publicly available using HEALPix soft- ware. We use a two-point cross-correlation function analysis, finding signal at different scales, which shows contribution from distinct structures. FULL TEXT IN SPANISH

  20. Troubles du comportement entre 18 et 36 mois : symptomatologie et psychopathologie associées

    Microsoft Academic Search

    F. Lüthi Faivre; A. Sancho Rossignol; S. Rusconi Serpa; D. Knauer; F. Palacio Espasa; C. Robert-Tissot

    2005-01-01

    Studies on behavior disorders in early childhood (ages 0–3) are more recent and less numerous than studies conducted about school-age children. Thus, the discrepancy between behaviors posing a clinical problem and normal development in toddlers needs to be better defined. The symptomatology and psychopathology comorbid with behavior disorders has not yet been answered using empirical and longitudinal data. The study

  1. Cultura médica e decisões reprodutivas entre mulheres infectadas pelo vírus da Aids

    Microsoft Academic Search

    Daniela Riva Knauth; Regina Maria Barbosa; Kristine Hopkins; Marion Pegorario; Regina Fachini

    2002-01-01

    HIV+ pregnant women face a range of medical information, prescriptions and practices that transform this period into a unique situation relative to previous pregnancies and experiences. This article tries to show which are the factors that affect HIV+ pregnant women's reproductive choices, especially as regards type of delivery and the decision on feminine sterilization adopted, as well as their implications.

  2. RELACIÓN ENTRE LAS PREFERENCIAS DE LOS INDIVIDUOS Y SU VALOR SUBJETIVO DE TIEMPO DE VIAJE

    Microsoft Academic Search

    P. Coto; R. Sainz; Fundación CTL-Cantabria; R. Núñez

    2007-01-01

    In this article, the authors try to determine the existent relation between the preference of individuals for leisure (L) or work (W) and the value of travel time to go to their work places. A discrete choice model is therefore adjusted and estimated, analysing the passengers' behaviour. The authors formalise an implementation for the city of Santander. Nevertheless, the study

  3. LOS MÚSICOS DE TECLA EN TIEMPOS DE FELIPE II: VIAJE ENTRE LO ALDEANO Y LO CORTESANO

    Microsoft Academic Search

    Louis Jambou

    1998-01-01

    En el presente artículo el autor enfoca un doble estudio sociológico de los organistas\\/músicos de tecla durante el reinado de Felippe II: el de los organistas de pueblo y el de los de la Corte. Basado en fuentes primeras y focalizado en el centro de España, el ensayo sugiere que Felipe II y las autoridades eclesiásticas tuvieron una \\

  4. Incompatibilit unilatrale chez Vicia faba L. I. Analyse globale de croisements intraspcifiques entre

    E-print Network

    Paris-Sud XI, Université de

    Incompatibilité unilatérale chez Vicia faba L. I. Analyse globale de croisements intraspécifiques cultivars et 4 sous-espèces de Vicia faba L. a servi de support à l'étude des relations de compatibilité in Vicia faba L. 7. General analysis of intraspecific crosses between four subspecies A diallel cross among

  5. El origen colonial de las diferencias del desarrollo entre países: el neoinstitucionalismo e Hispanoamérica

    Microsoft Academic Search

    Álvaro Albán Moreno

    2008-01-01

    This article presents and discusses the hypothesis and results of Acemoglu and his colleagues, regarding the colonial origin of development, and reviews the main historical facts of that period to show the scope and limitations of his theory regarding Spanish-America. When the correlation European settlements-initial institutions-present institutions-present performance is framed in the political, economic and cultural facts of the colonial

  6. Caractristiques des ractions de prcipitation entre les produits de scrtion de l'oviducte du Pleurodle

    E-print Network

    Paris-Sud XI, Université de

    not the same as purely ionic inte- ractions ; basic protein-acidic polysaccharide interactions have been which occurs in the reaction between cortical granule content and egg jellies in anurans. Introduction un précipité visible sous forme d'arc en gel d'agarose. Nous avons nous même montré que certains

  7. Interactions entre virus chez un hte commun Interfrences ngatives, antagonisme, pr-

    E-print Network

    Paris-Sud XI, Université de

    dans les phénomènes de protection contre les virus et les viroides. Mots clés additionnels : Effet. The use of mild strains (premunition) is one example of virus-induced protection of plants against virus diseases. Two other types of virus-induced protection (acquired systemic resistance and the production

  8. Nature cristallo-physico-chimique de l'interface entre un semiconducteur et son oxyde propre.

    E-print Network

    Boyer, Edmond

    (Cu, Ag, Au, Fe, Co, Ni, Pt, etc.). Quelques-unes de ces règles s'observent aussi systématiquement)-B5 in several aqueous electrolytes, pure or contaminated by different metals (Cu, Ag, Au, Pt, Pd, Fe, Co, Ni, etc...). The results allow to establish the main rules governing the systematic variations

  9. La peine et la rcompense. Entre gouvernementalit et sciences de gouvernement1

    E-print Network

    Paris-Sud XI, Université de

    Manuscrit auteur, publié dans "Le politique vu avec Foucault. Quelle est la fécondité des outils de Michel sociales, par exemple avec le succès de la théorie du panoptisme, revisitée par Foucault, ou, dans le monde Foucault pour analyser le politique ? Colloque international / Sciences Po, Paris : France (2005)" #12;des

  10. A INSTITUIO ENTRE A FENOMENOLOGIA E PSICANLISE: AFETO, TEORIA E HISTORICIDADE

    E-print Network

    between phenomenology and psychoanalysis: affect, theory, and historicity) Thamy Ayouch Université Charles-Ponty, the psychoanalysis could give a more appropriate answer to some contemporary challenges in gender questions without

  11. La Communicacion entre los Centros de Investigacion en Educacion (Communication among Educational Research Centers).

    ERIC Educational Resources Information Center

    Schiefelbein, Ernesto

    1972-01-01

    In Latin America there is a lack of communication concerning educational research. This lack has been underlined in many regional meetings, but no action has been taken. Possible steps that would lead to improvement include circulation of research summaries, both for completed and current works, efforts by research centers to organize meetings,…

  12. Analyse diffrentielle de puces ADN Comparaison entre mthodes wrapper et filter

    E-print Network

    Boyer, Edmond

    Guillemot , Laurent Le Brusquet , Arthur Tenenhaus , Vincent Frouin CEA, iRCM, Laboratoire d situations bio- logiques. Nous allons comparer une méthode classique d'analyse par tests d'hypothèses à des'expression). La stra- tégie usuelle consiste à mettre en oeuvre autant de tests qu'il y a de variables et de

  13. Algumas contribuições das neurociências para o estudo da relação entre o afeto e a cognição

    Microsoft Academic Search

    Simone Cagnin

    The objective of this article is to analyze pertinent contributions of the Neurosciences to the study of the relationship between affect and cognition. Through a selection of a few clinical and experimental studies that investigates the mind-brain relationship, especially those that point out to functional dissociations in patients with cerebral damages, we intend to discuss the brain systems that are

  14. Los contenidos curriculares en una escuela de primaria innovadora. Entre lo previsto y lo improvisado

    Microsoft Academic Search

    Rafael Feito

    Resumen Este texto procede de un trabajo de campo más amplio, basado en la observación partici- pante y en grupos de discusión y entrevistas en profundidad, en el que el autor analiza el fun- cionamiento de un centro público de Educación Infantil y Primaria que lleva a cabo una inno- vación educativa. En este artículo se describen y analizan los

  15. PROPUESTA DE CREACIN DE UN PARQUE NATURAL ENTRE LA CORNISA DE LOS MONTES Y LA MARGEN

    E-print Network

    Espigares, Tíscar

    , a primeras viviendas. Los municipios, especialmente los más pequeños, tienen que enfrentarse a problemas que, los cerros y el río Henares han gozado de un consenso social generalizado que ha salvaguardado la

  16. Relation entre la teneur en matire organique et les activits phosphatasiques de diffrents sols

    E-print Network

    Paris-Sud XI, Université de

    , Enzymes accumulées, Substrats artificiels. SUMMARY Relationship between soil phosphatase activity different horizons from the same soil section. Accumulated enzymes, No other soil characteristic and organic matter content Relationship, We have studied twenty soils from the West of Andalusia, ten alkaline

  17. TUDE EXPERIMENTALE DE L'ECOULEMENT ET DE L'INTERACTION ENTRE DEUX ROTORS CONTRAROTATIFS

    E-print Network

    AND THE INTERACTION IN-BETWEEN TWO COUNTER-ROTATING SUBSONIC AXIAL-FLOW FANS Recently, the need for smaller axial fans with high specific speeds leads to the design of counter-rotating axial fans. The design of this kind and local unsteady measurements. KEY WORDS: Turbomachinery, axial-flow fan, counter-rotating rotors, design

  18. Croisements interspcifiques entre quelques Brassicae et Brassica napus L. Analyse gnomique des hybrides et

    E-print Network

    Paris-Sud XI, Université de

    Interspecific crosses between some Brassica species and Brassica napus L. Genome analysis ofthe Male sterility, hybrids and possibilities of obtaining male sterility in rape. Cytogenetics, The production of alloplasmic male sterility in rape (Brassica napus L.). For this purpose four series of interspecific crosses were

  19. Las Mujeres marroquíes en Cataluña: entre la transgresión y el cambio

    Microsoft Academic Search

    Ana Rosa Alcalde González-Torres; Cristina García; Raquel Moreno; Marta Ramírez

    2008-01-01

    Aquesta comunicació és el resultat d?un treball de recerca que es va dur a\\u000aterme per a l?assignatura d?estructura i canvi social, que tenia com a objectiu observar els canvis de rols de gènere produïts en les dones immigrades marroquines un cop havien\\u000aarribat a Catalunya. D?aquesta manera es pretenia relacionar aquests canvis amb\\u000aunes estratègies específiques d?inserció cultural i

  20. Tendências no comportamento de proteção entre mulheres solteiras versus casadas na áfrica Subsaariana: a situação geral

    Microsoft Academic Search

    John Cleland; Mohamed M Ali; Iqbal Shah

    The trends in contraceptive uptake and condom use among single and married young women show distinct patterns in sub-Saharan Africa. A large median increase of 1.4 percentage points per year in condom use by single young women for pregnancy prevention was witnessed in 18 countries based on Demographic and Health Survey data from 1993 to 2001. In contrast, a modest

  1. ESTUDIO DESCRIPTIVO CORRELACIONAL ENTRE IRA Y PERSONALIDAD A LA LUZ DE LA TEORÍA DE HANS EYSENCK

    Microsoft Academic Search

    Clemencia Montaña de Barragán; María Alexandra Acosta; Ruby Maritza Gerena

    2002-01-01

    This work presents a theoretical revision regarding the theme of anger , its evaluation and intervention, directly related to aggression and important theories of the personality, focusing -primarily- in Eysenck's theory. Two instruments were used on 200 children of both sexes, within the ages of 9 to 11 years old in three schools in Santafé de Bogotá; one of these

  2. Comparação entre os testes de Schirmer em olhos abertos e fechados em indivíduos normais

    Microsoft Academic Search

    Daniel Cruz Nogueira; Richard Yudi Hid

    Purpose: To analyze the difference between measurements of Schirmer test I (STI) and basal Schirmer test (STB) with open and closed eyes. Methods: Sixty eyes of 30 normal volunteers, 12 males and 18 females aged 28 ± 9 years were recruited for the study. All ST were carried out in a closed environment with the absence of airflow (humidity 60

  3. Dimensiones actuales de lo público A propósito de las interrelaciones entre Estado, Management y Sociedad

    Microsoft Academic Search

    Edgar Varela Barrios

    2005-01-01

    This article analyzes the main dimensions of the relations between public and private fields. It has a theoretical point of view supported on political sociology and the managerial context in such relations. The author describes the main challenges faced by the materialization of public interest, starting from interest games coming from civil societies, the administrative bureaucratic practices of contemporary states,

  4. Sobre el estado evolutivo de ? Pictoris

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Benvenuto, O. G.

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

  5. Apoyo a Estudios Geodinamicos con GPS en Guatemala

    NASA Astrophysics Data System (ADS)

    Robles, V. R.

    2013-05-01

    El Instituto Geografico Nacional de Guatemala implemento 17 estaciones GNSS en el año 2009, como un proyecto de credito mixto de donacion de equipamiento del Gobierno de Suiza, el cual, este equipamiento de estaciones CORS GNSS es un sistema de recepción y transmisión de datos crudos GPS RInex que utiliza la tecnologia Spider Web de Leica, asi mismo este sistema esta sirviendo para el espablecimiento de un marco geodesico nacional de coordenadas geodesicas oficiales, el cual se calculan u obtienen las velocidades en tiempos temporales programados de las 17 Estaciones CORS. La infraestructura del marco geodesico de Guatemala esta sirviendo de base para las aplicaciones de estudios geodinamicos como el monitoreo de del desplazamiento de las placas tectonicas por medio de un estudio que se inicio en el año de 1999, llamado medicion con GPS el sistema de Fallas de los rios Polochic Motagua de Guatemala, tambien para un estudio que se implemento para deformación de corteza terrestre local en un Volcan Activo de Guatemala llamado Pacaya. Para el estudio de medicion con GPS en el sistema de falla de los Rios del polochic Motagua se implementaron 16 puntos para medir con GPS de dos frecuencias en el año de 1999, el cual, tres puntos son estaciones geodesicas CORS IGS llamados GUAT, ELEN y HUEH, despues en el año de 2003 se hizo otra medicion en un total de 20 puntos, que permitió calcular las velocidades de desplazamieinto de los puntos en mención, usando como referencia el modelo NUVEL 1A de DeMets de la placa de Norteamerica. Este estudio fue en cooperación internacional por la universidad de Nice de Francia y el IGNde Francia. Para el estudio del monitoreo con GPS del volcan activo de Guatemala, se implementaron cuatro puntos al rededor del volcan, el cual, se realizan cuatro mediciones al año, que permiten determinar axialmente la distancias entre los puntos, y rebisar estadisticamente cual es el comportamiento de las distancias en funcion del tiempo, si existen diferencias graduales crecientes o decrecientes, que nos da un indicativo del desplazamiento de la corteza terrestre al rededor del volcan.

  6. 63 FR 19288 - Copyright Restoration of Works in Accordance With the Uruguay Round Agreements Act; List...

    Federal Register 2010, 2011, 2012, 2013, 2014

    1998-04-17

    ...sacromonte. Filigrana torera. La filla del mar. Fin de semana. La fina. Finolis. Flamenca ye ye. Flan fan fan. Flor de arrayan. Flor de barrio. Flor de invernadero. Flor de loto. El florero. Las flores de la distancia. Flores toledanas....

  7. The Condor 103:785792 The Cooper Ornithological Society 2001

    E-print Network

    Wagner, Diane

    , primarily Common Ravens (Corvus corax). Social factors, including distance to nearest Least Tern and Snowy especie Corvus corax. Factores sociales como distancia al nido ma´s cercano de S. antillarum y C

  8. UNIVERSIDAD DE GRANADA E.T.S. DE INGENIERA

    E-print Network

    Granada, Universidad de

    olvidar el agradecer a mi esposa Loli su ayuda y sobre todo paciencia. #12; #12; A la memoria de mi padre y a Loli MEDIDAS DE ENTROPÍA Y DISTANCIA EN CONJUNTOS CONVEXOS DE PROBABILIDAD: DEFINICIONES Y

  9. Juan Pablo Pinasco Departamento de Matematicas

    E-print Network

    Pinasco, Juan Pablo

    N - UBA #12;viajes y astronom´ia Noci´on de "distancia ": originalmente, no euclideana y medida en "tiempo Departamento de Matematicas FCEyN - UBA #12;Por ejemplo: arte viajes astronom´ia ingenier´ia arquitectura

  10. La production de foie gras de canards mles de Barbarie : relation entre la croissance et la production de foie

    E-print Network

    Paris-Sud XI, Université de

    production de foie R. BABILE G. MATHERON B. POUJARDIEU Laboratoire de Zootechnie et des Productions animales Zootechnie Centre de Recherches des Antilles-Guyane 97179 Petit-Bourg, Guadeloupe * * INRA, Station d

  11. Nouvelle solution analytique pour l'tude de l'interaction hydraulique entre les tunnels alpins et les eaux souterraines

    E-print Network

    Paris-Sud XI, Université de

    addresses two major problems encountered during tunnel drilling and related to the hydraulic interaction analytical solution for the study of hydraulic interaction between Alpine tunnels and groundwater Key words

  12. Sur une Relation entre la Résistance à la Rupture et le Foyer d'Eclatement du Verre

    Microsoft Academic Search

    Nobuzo Terao

    1953-01-01

    The relation between the extent of mirror surface appearing at the starting point of crack produced in glass rod by bending and the applied stress is studied. Two series of experiments are carried out: (a) the load is increased linearly with time, (b) the load is kept constant. There is a tendency that the greater the stress at the moment

  13. L’économie de l’attention : entre protection des ressources cognitives et extraction de la valeur

    Microsoft Academic Search

    Emmanuel Kessous; Kevin Mellet; Moustafa Zouinar

    2010-01-01

    This general survey of the economics of attention presents the major theoretical models for exploring the mechanisms for “allocating” attention in an economy where it is a scarce resource. Writers have emphasized various means for attracting attention: the recognition, relevance, style and power of the emitter of information. The economics of attention subjects parties on the Internet and in the

  14. TUDE DES TRANSITIONS ENTRE TATS MTALLIQUES ET ISOLANTS. APPLICATION AUX BANDES D'IMPURET ET AUX ANTIFERROMAGNTIQUES. II.

    E-print Network

    Paris-Sud XI, Université de

    Under definite assumptions, an electron gas in a solid may behave as an insulator, in contradiction'hamil- tonien diagonal. Comme nous le verrons, tout se passe comme si notre transformation antiferro- magnétique

  15. Entre el Renacimiento y el Nuevo Mundo: Vida y obras de Hernan Perez de Oliva (1494?-1531)

    ERIC Educational Resources Information Center

    Pellus Perez, Elena

    2012-01-01

    Hernan Perez de Oliva (1494?-1531) was a learned Spanish humanist who wrote his major works in the decades following the discovery of America. By articulating events of his career and literary life, my goal is to comprehend his contributions to the early literary production regarding the newly-found Americas. The thesis consists of three parts.…

  16. Utilisation des antidépresseurs chez les patients souffrant de douleurs chroniques: quelle congruence entre prescription et notice d’emballage?

    Microsoft Academic Search

    C. Cedraschi; V. Piguet; J. Desmeules; A. F. Allaz; W. Fischer; P. Dayer

    2001-01-01

    Résumé  Différentes études font état d’une consommation médicamenteuse inappropriée et\\/ou excessive chez les patients souffrant de\\u000a douleurs chroniques. Les patients disposent de diverses sources d’information à propos des médicaments. Ces sources peuvent\\u000a leur fournir des informations congruentes ou non, correspondant ou non à leurs représentations et expériences préalables.\\u000a Les antidépresseurs, fréquemment prescrits dans le contexte de douleurs chroniques, sont associés à

  17. Interactions gntiques entre pathotypes franais d'Heterodera avenae Woll. et varits d'orge : I. -Aspect

    E-print Network

    Boyer, Edmond

    -322-1 », et d'une orge fran- çaise, « Vogue », est entreprise pour différencier les gènes responsables de la résistance respectivement à Fr 2 et Fr 3. - EF, gènes complémentaires, et P dans « Vogue », agissant sur been studied in 4 barley lines : 'Siri', 'Ortolan', 'P 31-322-1' and 'Vogue'. ANDERSEN, in Denmark, has

  18. Adolescences, entre dfiance et confiance, Casanova R., Vulbeau A. eds. Presses Universitaires de Nancy, sous Nicole BIAGIOLI

    E-print Network

    Paris-Sud XI, Université de

    adolescents d'Harry Potter. Résumé La série Harry Potter fait partie de la culture mondiale des préadolescents- adolescent Harry Potter's readers: Abstract J. K. Rowling's Harry Potter is part of world teen-aged culture, competence #12;2 La série Harry Potter (Rowling, 1997-2006) appartient à la culture mondiale des

  19. HISTÓRICO DOS PREÇOS E DA PRODUÇÃO DE LENHA E DE CARVÃO VEGETAL, NO ESTADO DO PARANÁ, ENTRE 1997 E 2007

    Microsoft Academic Search

    Alexandre Franca Tetto; Vitor Afonso Hoeflich; Neusa Gomes De Almeida Rucker; Daros Augusto Teodoro Da Siva; Jennifer Lovatto Borges

    2008-01-01

    Este artigo trata de uma análise da série histórica do mercado paranaense de lenha e carvão, no período de 1997 a 2007, levando em consideração os parâmetros preço e produção. Com relação ao preço, procedeu-se a análise envolvendo a lenha de bracatinga (Mimosa scabrella Benth.), eucalipto (Eucalyptus spp.), pinus (Pinus spp.) e mista – na propriedade rural (em pé), posta

  20. Projeto: Compilao de um corpus representativo do portugus do Brasil e anlise multidimensional da variao entre gneros

    E-print Network

    Projeto: Compilação de um corpus representativo do português do Brasil e análise multidimensional do Brasil e organizado de acordo com convenções aplicadas internacionalmente. Pesquisas desenvolvidas relativamente pequena, e deverá ser ampliada para tornar-se mais representativa do Português do Brasil e servir

  1. Prcticas jurdicas entre la asistencia/tratamiento y el castigo/punicin: ideas penales en el Brasil republicano1

    E-print Network

    Boyer, Edmond

    Brasil republicano1 Rivail Carvalho Rolim ­ UEM-CAPES-Brasil2 Resumen A principios de la década de 1940, Brasil cambió su ordenamiento jurídico- penal, introduciendo nuevos principios y postulados para la. ______________________________________________________________________ Palabras claves: cultura jurídico-penal; Brasil Republicano; derechos de los presos

  2. Relations entre la composition chimique des foins de luzerne et la dgradabilit in sacco de leurs matires azotes (*)

    E-print Network

    Boyer, Edmond

    of nitrogen degradation in nylon bags of 10 lucerne hays were determinated in order to separate the fractions of soluble, potentially degradable and indegradable rumen-nitrogen. No relationship was found between the two former fractions and the chemical composition of the hays, but non degradable nitrogen was related

  3. Entre l'autobiographie et la théorie: L'Intertextualité dans Écrire en pays dominé de Patrick Chamoiseau

    Microsoft Academic Search

    Luciano C. Picanço

    2006-01-01

    Écrire en pays dominé de Patrick Chamoiseau consiste en la présentation du développement de la vie d'un penseur comme illustration de sa formation théorique. Son objectif ne réside pas nécessairement dans les origines formelles de la théorie mais dans les mouvements internes dont elle dérive. Le choix du genre autobiographique découle de ce que la difficulté du projet des créolistes

  4. Comparação entre o sistema Petrifilm RSA® e a metodologia convencional para a enumeração de estafilococos coagulase positiva em alimentos

    Microsoft Academic Search

    Anderson de Souza Sant'ana; Denise R. Perdomo Azeredo

    2005-01-01

    SUMMARY COMPARISON OF PETRIFILM RSA SYSTEM WITH THE TRADITIONAL METHODOLOGY FOR THE ENUMERATION OF COAGULASE-POSITIVE IN FOODS. Foods are examined for the presence of coagulase-positive staphylococci using selective and differential media followed by characterization for coagulase, thermoestable nuclease, Gram and catalase tests. These tests may require up to four days to obtain the results, besides time and material used. The

  5. PEIRCE E A CIÊNCIA DA INFORMAÇÃO: considerações preliminares sobre as relações entre a obra peirceana e a organização da informação

    Microsoft Academic Search

    Carlos Cândido de Almeida; José Augusto Chaves Guimarães

    The interdisciplinary relationships of the information science with Charles Sanders Peirces work (1839-1914) are still little explored. The contributions of the theory of signs in the information science, specifi- cally in the processes, instruments and products of the information organization, they fall back upon the expla- nations of the structuralist semiology and linguistics. The research is a theoretical study that

  6. La relación de causalidad entre el crecimiento y la IED en Argentina. ¿Pan para hoy, hambre para mañana?

    Microsoft Academic Search

    Guillermo Celso Oglietti

    2007-01-01

    This work finds that FDI affects negativelly economic growth. This outcome is grounded on a demand-sided growth model which includes the shrinkage effect of foreing firms surpluses repatriation. Although, in one first stage FDI contributes to alleviate the financial shortage, in the long run it discourages investment and growth trough a diminished demand. Thus the model captures the Keynesian stress

  7. La responsabilidad social en las organizaciones (RSO): análisis y comparación entre guías y normas de gestión e información

    Microsoft Academic Search

    Gaspar Berbel Giménez; Juan David; Reyes Gómez; Mauricio Gómez Villegas

    P a l a b r a s c l a v e : Responsabilidad social en las organizaciones (RSO), responsabilidad corporativa (RC), stakeholders, gestión de responsabilidad social, informes de responsabilidad social. a b s t r a c t O r g a n i s a t i o n s ' s o c i a l

  8. RELATIONS ENTRE LA PHOTOLUMINESCENCE SOUS EXCITATION MODULE ET LA THERMOLUMTNESCENCE POUR LES SULFURES DU TYPE ZnS

    E-print Network

    Paris-Sud XI, Université de

    valeur égale à 0,71 avec une dispersion de 4 %. Ce résultat comporte cependant deux exceptions (0,63 et 0,655) curves. An expérimental study has been made of the modulation ratio for seven sulphide samples, that is about 0. 71 within a dis- persion of 4 %. Among the 18 glow peaks corresponding to the 7 samples, two

  9. ENTRE LOGIQUES D'TAT ET LOGIQUES COMMUNAUTAIRES A propos de quelques affaires de conversion en gypte vers 19301

    E-print Network

    Paris-Sud XI, Université de

    -t-elle, sinon vers ce qui l'enchaîne, vers la limite et ce qui s'y trouve enclos ?" Michel FOUCAULT2 Pour ceux manuscrit, qu'ils ont, par leurs commentaires, contribué à façonner. 2. Michel FOUCAULT, "Préface à la

  10. La Littérature De Jeunesse Entre Normes Pédagogiques Et Littéraires : Le Cas Des Pays Francophones D'afrique

    NASA Astrophysics Data System (ADS)

    Attikpoé, Kodjo

    2007-01-01

    YOUTH LITERATURE IN THE CONTEXT OF PEDAGOGIC AND LITERARY NORMS: THE FRENCH-SPEAKING COUNTRIES OF AFRICA - There are two approaches to children's and youth literature, one didactic, the other aesthetic. This gives rise to the following question: taking into account the fact that children's literature aspires to be a literary form in its own right, should more weight be attibuted to its aesthetic value when evaluating it? This paper examines this question - which has in the past been the subject of highly controversial discussions in the German-speaking regions - by focusing on youth literature in the French-speaking coutries of Africa. The pedagogic dimension cannot be ignored when considering this literary context because it is so much a part of the post-colonial dynamic. Youth literature in the French-speaking countries of Africa echoes current realities. Examples are used to demonstrate how literature can deal with vital questions without neglecting the literary aspect.

  11. EXISTE-T-IL UNE RELATION ENTRE L'INFORMATION SECTORIELLE ET LE TABLEAU DES FLUX DE TRESORERIE ?

    E-print Network

    Paris-Sud XI, Université de

    (normes IAS 14 et IFRS 8) expliquent-elles le tableau de flux de trésorerie (norme IAS 7) ? A partir d disponibles ­ IFRS 8 ­ IAS 14 Abstract Does Segment information allow us to better understand the cash flow business model (BM). Standards on segment reporting (IAS 14 and IFRS 8) should help explain the business

  12. Presencia de Walt Whitman en la poesia de Pablo Neruda: la relacion entre Hojas de Hierba y Canto General

    E-print Network

    Rios, David Joel

    1999-01-01

    Lara. AGRADECIMIENTO8 A los Drs. Eduardo Espina, Richard Curry y Marco Portales les debo mi mas profundo agradecimiento por su paciencia, motivacion y fe, las cuales me brindaron la inspiracion necesaria para cumplir este proyecto. No pudiera haber.... " (9) Con estas observaciones el critico chileno Fernando Alegria inicio su discusion sobre la presencia del poeta norteamericano en Latinoamerica. Han transcurrido mas de cuarenta anos desde la publicacion de su libro Walt Whitman en Hispanoamerica...

  13. Apontamento sobre a contabilidade em Portugal entre 1900 e 1950. (Note on the accounting in Portugal between 1900 and 1950)

    Microsoft Academic Search

    Hernâni O. Carqueja

    2011-01-01

    Este ensayo intenta encontrar respuestas a la pregunta: ¿qué doctrinas fueron acogidas por los académicos portugueses y cómo evolucionó la contabilidad en Portugal, en el período 1900 a 1950? Para esclarecer el contexto en 1900 se procede a una breve revisión de los antecedentes desde la creación del “Aula do Comércio de Lisboa”, que es el referente de la enseñanza

  14. Interações entre monensina sódica, óleo de soja e fontes de nitrogênio no desempenho de novilhos Aberdeen Angus em confinamento

    Microsoft Academic Search

    Rogério de Paula Lana; Danny G. Fox

    2001-01-01

    Fourty Aberdeen Angus steers were used to evaluate the effects of monensin, soybean oil and nitrogen source (soybean meal or urea) on feedlot performance of steers fed 90% concentrate diets. The monensin decreased dry matter intake of soybean meal supplemented diets and decreased the body weight at 56 and 112 days. The soybean oil decreased the average daily gain from

  15. Le Brsil de Vargas : entre l'Institut International de Coopration Intellectuelle et l'Union Panamricaine

    E-print Network

    Paris-Sud XI, Université de

    », comme l'a si bien nommée Gerson Moura, trouve sa forme la plus achevée sous Getúlio Vargas. C : ruptura ou continuidade ? » (Moura, 1983), Gerson Moura préfère parler de «redéfinition» (Moura, 1983

  16. Comit d'thique (COMETS) L'IMPERATIF D'EQUITE DANS LES RAPPORTS ENTRE CHERCHEURS ET

    E-print Network

    van Tiggelen, Bart

    jour nouveau à deux égards. - D'abord, son objet s'est déplacé. Si le pillage d'oeuvres d'art existe archéologiques (on sait que se pose encore aujourd'hui le problème du rapatriement des objets d'art et autres matérielles ou intellectuelles d'un nouveau type : caractéristiques biologiques et génétiques de telle

  17. Entre recration de l'me et rcration des yeux : les Figures de la Bible au XVIe

    E-print Network

    Paris-Sud XI, Université de

    grandes bibles illustrées, connaît un premier apogée en France avec les gravures de Bernard Salomon (référence biblique, gravure, quatrain ou sixain) reprend celle du système emblématique (motto, gravure commode de l'histoire sainte pour la recréation de l'âme et proposent dans le même temps des gravures d

  18. La ngociation de la ralit financire entre les auditeurs et les dirigeants : une synthse de la littrature

    E-print Network

    Boyer, Edmond

    la littérature Résumé : L'audit remplit une fonction institutionnelle de contrôle et de production de vise une investigation en profondeur du processus de négociation, en étudiant les dimensions cognitives. Then we turn to two research streams that deal with negociation under different perspectives. Cognitive

  19. L'évaluation des services publics par la satisfaction des usagers, entre fonction d'apprentissage et logique de discipline

    Microsoft Academic Search

    Aurélien Ragaigne

    2009-01-01

    A quoi sert un indicateur de satisfaction des usagers dans la gouvernance d'une collectivité territoriale ? Telle est la question à laquelle cet article tente d'apporter des éléments de réponse. S'appuyant sur les travaux analysant le contrôle de gestion comme un outil de gouvernance disciplinaire et l'appropriation comme un processus de traduction, l'étude proposée de huit indicateurs montre que les

  20. Relación entre radiografía simple y resonancia magnética en la evaluación de niños con displasia de cadera en desarrollo

    Microsoft Academic Search

    Sonia Mercedes; Quevedo Blanco; Héctor Eduardo; Rueda Lancheros; Enrique Calvo Páramo

    Congenital hip dysplasia is a common disease with unfavorable consequences in the adult life. In pediatric population it is frequent to find patients with abnormal radiographic values. The treatment of these patients is controversial, especially in those with normal clinical examination and values considered as \\

  1. Entre coût historique et valeur de marché : Une histoire de la valeur comptable en France (XIXe - début XXe siècle)

    Microsoft Academic Search

    Pierre Labardin; Karine Fabre

    2011-01-01

    Depuis l'introduction des normes IFRS en France, la question de la juste valeur a occupé de nombreux chercheurs en comptabilité (Casta et Colasse [2001] ; Colasse [2005] ; Capron [2005] ; Richard [2005] ; Biondi [2008]). Les prises de position sur les risques et les avantages de ce nouveau mode d'évaluation se sont multipliées tant dans les écrits académiques que

  2. Correspondance entre forme et sens a propos du subjonctif (Correspondence between Form and Meaning in the Subjunctive).

    ERIC Educational Resources Information Center

    Gross, Maurice

    1978-01-01

    Discusses the traditional description of the French subjunctive, as opposed to a description based on principles of mathematical logic, which can account for the relationship between form and meaning in the subjunctive. (AM)

  3. Variaciones recientes de glaciares entre 41º S y 49º S y su relación con los cambios climáticos

    Microsoft Academic Search

    Alfonso Fernández River; Andrés Rivera Ibáñez; Cristián Rodrigo Ramírez

    The volumetric variations of glaciers located between 41º S and 49º S are pre- sented, which have been compared with climatic trends. The analysis used data from meteorological stations, remote sensing, cartography and land survey. An overall retreat and thinning is detected, which are fairly related with the recent climate trends detected on this zone. The ratio between area lost

  4. El cambio climatico relacionado con los mecanismos de retroalimentacion entre la atmosfera, la supercie terrestre y la criosfera

    Microsoft Academic Search

    Norma Sanchez Santillan; Ruben Sanchez Trejo; Alfonso Esquivel Herrera

    The present work analyses the conceptual back- ground surrounding the theory of feedback between the atmosphere, the earth surface and the cryosphe- re, that was developed in order to explain the cli- matic change that has been recorded since the last third of the twentieth century. The supporting argu- ments for this theory as well as those against it are

  5. La quatrime dition de la Novela s'est tenue Toulouse entre le 5 et le 21 octobre 2012. Organis

    E-print Network

    Babonneix, Virginie Sanial, Cori Pegliasco, Isabelle Dadou, Yves Morel) sont venus au milieu des différents'exposition, la soirée "Océanez-vous" continuait avec le film IMAX Blue Planet, l'assiette de l'écailler et le film Océans. A l'issue du film Blue Planet, un débat de 30 minutes avec le public auquel ont participé

  6. Les terrasses marines, marqueurs de l'interaction entre soulvement et oscillation du niveau de la mer Vincent Regard1

    E-print Network

    Paris-Sud XI, Université de

    mer Vincent Regard1 & Kevin Pedoja2 & Marianne Saillard3 1. Géosciences Environnement Toulouse, OMP, Observatoire de la Côte d'Azur, Villefranche-sur-Mer Définition. Là où terre et océan se rencontrent, la mer formes d'abrasion ou de formes dépôt. Le niveau moyen de la mer va avoir tendance à former des

  7. D1 Sensory and architectural heritage | Hritage sensoriel et patrimoine --487 Les ambiances dans les vieilles villes algriennes : entre

    E-print Network

    Paris-Sud XI, Université de

    D1 · Sensory and architectural heritage | Héritage sensoriel et patrimoine, identités et héritages sensoriels Lilia MAKHLOUFI École Polytechique d'Architecture et can draw from this heritage, inexhaustible source concerning architectural

  8. LIDERES POLÍTICOS INDÍGENAS EN AMAZONIA: POLÍTICA Y AUTO-REPRESENTACIÓN ENTRE LOS YE'KWANA DEL ALTO ORINOCO

    Microsoft Academic Search

    Matthew Lauer

    2005-01-01

    This article examines the rise of an indigenous leader among the Ye'kwana of Southern Venezuela in order to analyze indigenous identity politics in the region. Because of extraordinary circumstances that created a municipality in the Upper Orinoco populated exclusively by indigenous people, the Ye'kwana now have the ability to elect indigenous representatives to public office. These new Ye'kwana political leaders

  9. Prediction objective des differences de qualite perceptuelles entre un ecran CRT et un ecran LCD en TVHD

    E-print Network

    Paris-Sud XI, Université de

    LCD en TVHD Sylvain Tourancheau, Mathieu Carnec, St´ephane P´echard, Patrick Le Callet, Dominique´esente la technologie LCD et son impact sur la t´el´evision haute d´efinition. Des tests subjectifs mettant plus impor- tante sur ´ecran CRT que sur ´ecran LCD. Cette diff´erence de qualit´e peut s'expliquer par

  10. Entre le dbat et le banal : les mariages religieux des couples du mme sexe aux tats-Unis

    E-print Network

    Paris-Sud XI, Université de

    , Coming out in Christianity : Religion, Identity, and Community, Bloomington (IN), Indiana University dénomination est « fundamentalist » selon Laud Humphreys, c'est du « fundamentalism minus homophobia » d'après un article du magazine protestant progressiste le Christian Century, c'est une « conservative church

  11. El precio de la anarqua La semana pasada se inaugur entre Guadalajara y Madrid una nueva autopista de peaje,

    E-print Network

    Fernández Gallardo, Pablo

    . Otros, que no ahorra los 40 minutos que pregona el Ministerio de Fomento: el tiempo ganado en la nueva podrá hacer nada, por sí sólo, para abreviar su viaje. He ahí la "paradoja de Braess": ¡la apertura de la nueva autopista alargará el viaje para todos los conductores! La paradoja se constató en Nueva

  12. Équilibre entre phases du système ternaire: albite, anorthite, feldspath strontique et solution chlorurée à 750 °C, 200 MPa

    NASA Astrophysics Data System (ADS)

    Lagache, Martine

    1999-03-01

    The ternary system albite-anorthite-strontium feldspar does not show immiscibility gap at 750 °C and 200 MPa. The solid phase which crystallizes at the strontium end-member is an analog of paracelsian. The cell parameters of the feldspar phases have been measured and two domains, triclinic and monoclinic are determined. Knowing the chemical composition of the chloride solution in equilibrium with the feldspars of the ternary system, it is possible to calculate the partition coefficient of Sr between solid and fluid in equilibrium. As long as the molar fraction of strontium feldspar is less than 0.4, the partition coefficient obeys a simple law which considers the three binary feldspars as ideal solid solutions. However, the excess molar Gibbs free energy at any point of the ternary system can be calculated; the maximum corresponds to a domain of composition in the An-Srf series in which immiscibility between two solid phases appears at 600 °C.

  13. APROXIMACIN SISTMICO FUNCIONAL DEL DISCURSO DE MARTIN LUTHER KING `I HAVE A DREAM': RELACIONES ENTRE LA LXICO-

    E-print Network

    Escolano, Francisco

    APROXIMACIÓN SISTÉMICO FUNCIONAL DEL DISCURSO DE MARTIN LUTHER KING `I HAVE A DREAM': RELACIONES artículo analiza el discurso de Martin Luther King `I have a dream' siguiendo los principios de la Estados Unidos. Palabras clave Gramática Sistémica Funcional, análisis del discurso, Martin Luther King

  14. Cybergeo : Revue europenne de gographie, N 353, 12 octobre 2006 Katrina et la Nouvelle-Orlans : entre risque "naturel" et

    E-print Network

    Paris-Sud XI, Université de

    temas. Palabras claves : estrategias de planeamiento, gestion de crisis, ambiente, riesgos, desarrollo://iga.ujf-grenoble.fr/territoires/membres/chercheurs/Mancebo.htm Résumé : L'efficacité d'une politique de gestion de risques qui ne sont naturels qu'en apparence dépend'interprétation de la réalité qui doit être au coeur de la gestion des risques. Cela signifie qu'il n'existe, en fait

  15. Mitos acerca de Gardasil Inquietudes se interponen entre la vacuna contra el virus de papiloma humano y las

    E-print Network

    Quirk, Gregory J.

    , realizó en la Isla estudios conducentes a la aprobación de la vacuna. "Mucha gente tiene mucha reserva estudios para su aprobación -antes del 2000- y luego de ésta, los efectos secundarios que más se han), además de fiebre, náuseas, mareos, vómitos y desmayos. Sólo en algunos casos se han reportado reacciones

  16. Los ciudadanos mexicanos que deseen estudiar en la Universit de Montral pueden elegir entre las siguientes opciones

    E-print Network

    Montréal, Université de

    todos los casos, deben inscribirse en cursos de tiempo completo. La admisión se realiza analizando el legajo del estudiante y no es automática. Convalidaciones escolares Para acceder a los estudiosIcanos Estudios México Estudiantes mexicanos universitarios en Quebec Diploma de ingreso Bachillerato Bachillerato

  17. La Facultad de Estudios Superiores (FES) Aragn busca incentivar la elaboracin de textos analticos y originales entre

    E-print Network

    Islas, León

    Objetivo La Facultad de Estudios Superiores (FES) Aragón busca incentivar la elaboración de textos ensayos deberán presentarse en las instalaciones de la Facultad de Estudios Superiores Aragón o ser en días hábiles de 10:00 a 15:00 horas y de 17:00 a 20:00 horas. Para efectos de registro, en caso de

  18. Relation entre évolution de la matière organique et caractéristiques géostructurales : exemple du bassin yprésien en Tunisie centro-septentrionale

    NASA Astrophysics Data System (ADS)

    Arfaoui, Adel; Montacer, Mabrouk

    2006-08-01

    The geochemical analysis of the organic-rich facies from the Ypresian basin in central-northern Tunisia shows that the organic matter is marine originated (type II) and displays a low thermal maturity level in outcropping samples. This study proves that the distribution, conservation and, therefore, the composition of the organic matter have been controlled by the dynamic of the Ypresian basin. The Ypresian period corresponds to an anoxic event, which led to the accumulation and preservation of good quantities of organic matter derived from a high primary production. To cite this article: A. Arfaoui, M. Montacer, C. R. Geoscience 338 (2006).

  19. A interação entre hospitais universitários e os institutos de pesquisa e o papel da LBE no apoio a jovens pesquisadores

    Microsoft Academic Search

    Jaderson Costa da Costa

    2005-01-01

    Collaboration between University Hospitals and Research Institutes and the Role of the Brazilian League of Epilepsy in supporting young investigators Introduction: Growing gap between clinical and basic research, along with the increasing complexities of these researches, are making it more difficult to translate new knowledge to the clinic. These challenges are limiting professional interest in the field and hampering the

  20. Relation entre la biodgradation de la glycine libre ou combine et la nature du complexe d'altration des sols

    E-print Network

    Paris-Sud XI, Université de

    horizons of two humus-rich grass soils, developed respectively on granite and graywacke, were incubated was reorganized ; on graywacke, no nitrifying activity was observed and immobilization of ammonia predominated

  1. Potencial de Seqüestro de Carbono Atmosférico entre Diferentes Cultivares de Milho (Zea mays L.) sob Condiç o de Déficit Hídrico

    Technology Transfer Automated Retrieval System (TEKTRAN)

    There is a question concerning the role of agricultural practices on carbon sequestration enhancement. By producing biomass with agricultural crops and adding this residue to soil, it should act on the mitigation process of the greenhouse effect, especially CO2. The objectives of this study were to ...

  2. Circuitos y espacios transnacionales en la migración entre México y Estados Unidos: aportes de una encuesta de flujos

    Microsoft Academic Search

    Cristóbal Mendoza Pérez

    2004-01-01

    Demographers have engaged in only a limited discussion of transnationalism, but that discipline has explored various dimensions relating to space, time, and the cre- ation of migratory networks, all of which fits within a transnational perspective on migration. Using an analysis of the Encuesta sobre Migración en la Frontera Norte de México (Survey on Migration in the Northern Border of

  3. Neurociencia social: El maridaje entre la psicología social y las neurociencias cognitivas. Revisión e introducción a un nueva disciplina

    Microsoft Academic Search

    Israel Grande-García

    2009-01-01

    Title: Social neuroscience: The marriage between social psychology and cognitive neurosciences. A review and an introduction to a new discipline. Abstract: Social neuroscience is a new discipline emerging from the com- bination of the research in social psychology and cognitive neurosciences whose aim is the study of the biological foundations (immune, endocrine, neural) of social cognition and behavior, combining the

  4. Modelo Principal-Agente para contratos entre pequenos produtores e empresa exportadora de manga no Rio Grande do Norte

    Microsoft Academic Search

    Luciano Menezes Bezerra Sampaio

    2007-01-01

    Fruit production is an activity of great importance in the Brazilian commercial balance and even more in the Northeastern region. Intermediation is a regular practice in the fruit exporting market due to existence of requirements, such as quality certificates, and of internal problems in production and commercialization, such as credit limitations and absence of product standardization. Large companies, cooperatives, associations

  5. Viviendas y centros sociales en el movimiento de okupación: entre la autogestión doméstica y la restructuración urbana

    Microsoft Academic Search

    Miguel Martínez López

    2007-01-01

    La extensa experiencia de organización y proyección social del movimiento de okupación en el Estado español (aproximadamente dos décadas) no se corresponde con análisis rigurosos acerca de su génesis y desarrollo. De hecho, algunas dimensiones centrales en dicho movimiento, como las dinámicas de reestructuración urbana y las prácticas de autogestión experimentadas por sus miembros, han quedado en un segundo plano

  6. Correlações genotípicas, fenotípicas e de ambiente entre dez caracteres de melancia e suas implicações para o melhoramento genético

    Microsoft Academic Search

    Maria Aldete J. F. Ferreira; Manoel Abílio de Queiróz; Leila T. Braz; Roland Vencovsky

    2003-01-01

    Genotypic, phenotypic and environmental correlations among agronomic traits and the consequences for watermelon breeding Genotypic, phenotypic and environmental correlations were estimated among the following traits of watermelon: number of days to the appearance of the first female flower (FF); number of fruits per plant (NF); weight of fruit (PF); flesh color (CP) and thickness (EP); longitudinal (DL) and transversal (DT)

  7. Presencia de Walt Whitman en la poesia de Pablo Neruda: la relacion entre Hojas de Hierba y Canto General 

    E-print Network

    Rios, David Joel

    1999-01-01

    ; no queda fuera de lo razonable la idea de que un poeta tan renombrado corno Neruda gozara de un conocimiento amplio de la literatura mundial y por lo tanto, de una herencia intelectual muy rica y variada. Claro, tampoco se puede negar completamente la...

  8. Efeito da Crioterapia na Noção de Posição Articular Activa do Ombro: um estudo comparativo entre o género masculino e feminino

    Microsoft Academic Search

    Alcino Duarte; Francisco Neto; André Proença; Rui Torres

    Introduction: The practice of cryotherapy methods is commonly used by physiotherapists in sports. There is general consensus of its analgesic and anti inflammatory effects. However, neuromuscular cooling can interfere with sensory and motor information, which can lead to important motor control alteration. Purpose: Determine which effect the cryotherapy method has in the active Joint Position Sense (JPS), between male and

  9. Relations entre la geologie et la radioactivit des sources de la Voulzie, du Durteint et des bassins environnants

    E-print Network

    Paris-Sud XI, Université de

    bassins environnants près Provins Par F. DIENERT et A. GUILLERD Depuis la découverte de la radioactivité de Provins, il n'y a pas lieu d'envisager le dégagement des gaz d'origine tel- lurique et très constituant le périmètre d'alimentation des sources de la région de Provins est formé par la superposition de

  10. Interaction entre le greffon et le porte-greffe chez la vigne. Application de la mthode des greffages

    E-print Network

    Paris-Sud XI, Université de

    -greffes de la vigne (« Riparia », « 101-14 », « Fercal », « S04 », « 140 Ru »), Vigne, ont servi à and petioles. For this purpose, five Reciprocal grafting, grapevine rootstock varieties (« Riparia », « 101

  11. [Índice de Saturación Modificado y Ambulancias (ISMA): Ambulance assignment and remote Emergency Room Bed Reservation].

    PubMed

    Polanco-González, Carlos; Castañón-González, Jorge Alberto; Villanueva-Martínez, Sebastián; Samaniego-Mendoza, José Lino; Buhse, Thomas

    2015-01-01

    Introducción: En gran parte del mundo, incluido nuestro país, los Servicios de Urgencias Médicas están sobresaturados. Esta situación obliga con frecuencia a redireccionar hacia otras unidades médicas las ambulancias que arriban de forma continua al Servicio de Urgencias, lo cual retrasa la admisión de los pacientes transportados y repercute desfavorablemente en su evolución. Objetivo: Presentar un complemento al sistema computacional Índice de Saturación Modificado (ISM), que monitorea el grado de saturación de una red de Servicios de Urgencias Médicas, para incluir una red de ambulancias, facultando al sistema para la asignación óptima de ambulancias al sitio del accidente o evento clínico grave y la reservación remota de camas en el Servicio de Urgencias más cercano y menos saturado. Material y métodos: La evaluación del complemento computacional y su conectividad al sistema ISM se llevaron a cabo con una prueba computacional que verificó estos dos aspectos, y que usó en sus medidas de tiempo únicamente diferencias entre códigos postales. Resultados: La verificación de su sostenimiento en tiempo real mostró que el nuevo sistema ISMA es una estructura robusta que se puede trasladar a teléfonos móviles, laptops o tablets y que administra de forma eficiente la medición de la sobredemanda de los Servicios de Urgencias de su red hospitalaria, la asignación de ambulancias y pacientes en las mejores condiciones de distancia-tiempo al sitio del accidente o evento clínico más cercano y menos saturado, y la asignación de las ambulancias que han de acudir al sitio del evento o contingencia. Conclusiones: Esta herramienta de gestión administrativa es eficiente y simple de usar, y relaciona de forma óptima redes de servicio independientes. PMID:26089266

  12. Planificación Neuroquirúrgica con Software Osirix

    PubMed Central

    Jaimovich, Sebastián Gastón; Guevara, Martin; Pampin, Sergio; Jaimovich, Roberto; Gardella, Javier Luis

    2014-01-01

    Introducción: La individualidad anatómica es clave para reducir el trauma quirúrgico y obtener un mejor resultado. Actualmente, el avance en las neuroimágenes ha permitido objetivar esa individualidad anatómica, permitiendo planificar la intervención quirúrgica. Con este objetivo, presentamos nuestra experiencia con el software Osirix. Descripción de la técnica: Se presentan 3 casos ejemplificadores de 40 realizados. Caso 1: Paciente con meningioma de la convexidad parasagital izquierda en área premotora; Caso 2: Paciente con macroadenoma hipofisario, operada previamente por vía transeptoesfenoidal en otra institución con una resección parcial; Caso 3: Paciente con lesiones en pedúnculo cerebeloso medio bilateral. Se realizó la planificación prequirúrgica con el software OsiriX, fusionando y reconstruyendo en 3D las imágenes de TC e IRM, para analizar relaciones anatómicas, medir distancias, coordenadas y trayectorias, entre otras funciones. Discusión: El software OsiriX de acceso libre y gratuito permite al cirujano, mediante la fusión y reconstrucción en 3D de imágenes, analizar la anatomía individual del paciente y planificar de forma rápida, simple, segura y económica cirugías de alta complejidad. En el Caso 1 se pudo analizar las relaciones del tumor con las estructuras adyacentes para minimizar el abordaje. En el Caso 2 permitió comprender la anatomía post-operatoria previa del paciente, para determinar la trayectoria del abordaje transnasal endoscópico y la necesidad de ampliar su exposición, logrando la resección tumoral completa. En el Caso 3 permitió obtener las coordenadas estereotáxicas y trayectoria de una lesión sin representación tomográfica. Conclusión: En casos de no contar con costosos sistemas de neuronavegación o estereotáxia el software OsiriX es una alternativa a la hora de planificar la cirugía, con el objetivo de disminuir el trauma y la morbilidad operatoria. PMID:25165617

  13. Arabidopsis SHR and SCR transcription factors and AUX1 auxin influx carrier control the switch between adventitious rooting and xylogenesis in planta and in in vitro cultured thin cell layers

    PubMed Central

    Della Rovere, F.; Fattorini, L.; D’Angeli, S.; Veloccia, A.; Del Duca, S.; Cai, G.; Falasca, G.; Altamura, M. M.

    2015-01-01

    Background and Aims Adventitious roots (ARs) are essential for vegetative propagation. The Arabidopsis thaliana transcription factors SHORT ROOT (SHR) and SCARECROW (SCR) affect primary/lateral root development, but their involvement in AR formation is uncertain. LAX3 and AUX1 auxin influx carriers contribute to primary/lateral root development. LAX3 expression is regulated by SHR, and LAX3 contributes to AR tip auxin maximum. In contrast, AUX1 involvement in AR development is unknown. Xylogenesis is induced by auxin plus cytokinin as is AR formation, but the genes involved are largely unknown. Stem thin cell layers (TCLs) form ARs and undergo xylogenesis under the same auxin plus cytokinin input. The aim of this research was to investigate SHR, SCR, AUX1 and LAX3 involvement in AR formation and xylogenesis in intact hypocotyls and stem TCLs in arabidopsis. Methods Hypocotyls of scr-1, shr-1, lax3, aux1-21 and lax3/aux1-21 Arabidopsis thaliana null mutant seedlings grown with or without auxin plus cytokinin were examined histologically, as were stem TCLs cultured with auxin plus cytokinin. SCR and AUX1 expression was monitored using pSCR::GFP and AUX1::GUS lines, and LAX3 expression and auxin localization during xylogenesis were monitored by using LAX3::GUS and DR5::GUS lines. Key Results AR formation was inhibited in all mutants, except lax3. SCR was expressed in pericycle anticlinally derived AR-forming cells of intact hypocotyls, and in cell clumps forming AR meristemoids of TCLs. The apex was anomalous in shr and scr ARs. In all mutant hypocotyls, the pericycle divided periclinally to produce xylogenesis. Xylary element maturation was favoured by auxin plus cytokinin in shr and aux1-21. Xylogenesis was enhanced in TCLs, and in aux1-21 and shr in particular. AUX1 was expressed before LAX3, i.e. in the early derivatives leading to either ARs or xylogenesis. Conclusions AR formation and xylogenesis are developmental programmes that are inversely related, but they involve fine-tuning by the same proteins, namely SHR, SCR and AUX1. Pericycle activity is central for the equilibrium between xylary development and AR formation in the hypocotyl, with a role for AUX1 in switching between, and balancing of, the two developmental programmes. PMID:25617411

  14. COMUNIDADES DE PLANTAS ACUÁTICAS EN LAGUNAS DE LOS PÁRAMOS DEL NORTE Y SUR DEL ECUADOR Aquatic plant communities in lakes of the Páramos of north and south of Ecuador

    Microsoft Academic Search

    ESTEBAN TERNEUS

    A study on aquatic plant distribution and its relationship with environmental factors was carried out in 16 high Andean lakes (3100-3900 m a s l). Nine lakes were located near to the northern border of Ecuador and seven located 600 km further south in the Podocarpus National Park. The purpose of the study was to identify differences in the floristic

  15. RENDIMIENTO Y CARACTERÍSTICAS DE PLANTA Y PANOJA DE AMARANTO EN RESPUESTA A NITRÓGENO Y CANTIDAD DE SEMILLA * YIELD AND PLANT AND PANICLE TRAITS IN AMARANTH IN RESPONSE TO NITROGEN AND SEEDING RATE

    Microsoft Academic Search

    José Luis Arellano Vázquez; Jorge Alberto; Galicia Franco

    2007-01-01

    In order to mechanize the harvest of amaranth, short plants of thin stalk, uniform height and of high yield are needed. The objective of this research was to determine the effect of nitrogen dose and seed quantity on yield and plant and panicle traits of amaranth Amaranthus hypochondriacus L. An experiment was conducted at Ayapango, state of Mexico, Mexico, under

  16. 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

    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

    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

  17. 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

    TEOLINDA CARRILLO-ROSARIO Y GLENDA

    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.

  18. Master d'Ocanographie UE 310 `Invasions et transferts biologiques'

    E-print Network

    Boudouresque, Charles F.

    - mona- dida Oxymo- nadida Streptobionta Euglyphids Retaria Cercobionta ARCHAEPLASTIDA (= PLANTAE (2014, in press) The 10 Eukaryote kingdoms Bikonts (the 8 other kingdoms) #12;Embryophyta Charo- phyceae ARCHAEPLASTIDA (= PLANTAE) Ellobiopsidae Bicosoecida Eumetazoa Placozoa Porifera Microsporidia Basidiomycota

  19. La Mamora, charnière entre la Meseta et le Rif : son importance dans l’évolution géodynamique post-paléozoïque du Maroc

    Microsoft Academic Search

    Lahcen Zouhri; Christian Lamouroux; Christophe Buret

    2001-01-01

    The Mamora  area (Morocco) is located in the northern part of the Meseta and the southern part of Rharb. The recent formations (Mesozoic to Quaternary) lie unconformably on a Paleozoic basement. This study based on hydrogeological, sedimentological, drilling data and seismic reflection profiles interpretation, proposes new interpretations of geodynamical evolution of this area particularly in terms of tectonic patterns. The

  20. EXCITATIONS LECTRONIQUES DANS TiO2 RUTILE ET TiO MESURE DES PERTES D'NERGIE DES LECTRONS ENTRE 3 ET 60 eV

    E-print Network

    Paris-Sud XI, Université de

    niveau de Fermi, des états Ti 3d responsables en grande partie de la liaison chimique et de la conduc métallique ou isolant de ces composés. L'un des exemples les plus remarquables est celui des oxydes de titane modification d'environnement cristallin de l'ion titane, qui affecte sensiblement la position, au voisinage du