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1

Plantas crucíferas y la prevención del cáncer  

Cancer.gov

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

2

Accidentes en plantas nucleares de electricidad y el riesgo de cáncer  

Cancer.gov

Hoja informativa acerca de los riesgos del cáncer asociados con accidentes en plantas nucleares de electricidad. Incluye información para pacientes con cáncer que viven en una zona que puede haber sido afectada por un accidente en una planta nuclear.

3

PSC 424: Kingdom Plantae  

NSDL National Science Digital Library

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

Webb, Mrs.

2011-10-12

4

In planta gene targeting  

PubMed Central

The development of designed site-specific endonucleases boosted the establishment of gene targeting (GT) techniques in a row of different species. However, the methods described in plants require a highly efficient transformation and regeneration procedure and, therefore, can be applied to very few species. Here, we describe a highly efficient GT system that is suitable for all transformable plants regardless of transformation efficiency. Efficient in planta GT was achieved in Arabidopsis thaliana by expression of a site-specific endonuclease that not only cuts within the target but also the chromosomal transgenic donor, leading to an excised targeting vector. Progeny clonal for the targeted allele could be obtained directly by harvesting seeds. Targeted events could be identified up to approximately once per 100 seeds depending on the target donor combination. Molecular analysis demonstrated that, in almost all events, homologous recombination occurred at both ends of the break. No ectopic integration of the GT vector was found. PMID:22529367

Fauser, Friedrich; Roth, Nadine; Pacher, Michael; Ilg, Gabriele; Sánchez-Fernández, Rocío; Biesgen, Christian; Puchta, Holger

2012-01-01

5

Alpinia purpurata Buscando una planta libre de cochinillas  

E-print Network

especies de cochinilla en las inflorescencias muestreadas en la zona de Siquirres y Guápiles: Dysmicoccus invierno de 0,51 brácteas infestadas por inflo- rescencia y 0,36 para la época de verano. 4,4% de las

Ginzel, Matthew

6

CONTROL DEL CRECIMIENTO DE MICROORGANISMOS FILAMENTOSOS EN UNA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES INDUSTRIALES  

Microsoft Academic Search

Main filamentous microorganisms have been identified in effluents of sewage from three food industries, which lay on Toluca-Lerma industry zone. This sewage is sent to an industrial company to be treated, its activated sludge process has been affected by filamentous microor- ganisms identified at the entrance and flow circulation during treatment. In effluents of sewage, the main filamentous microorganisms are:

Víctor F. PACHECO SALAZAR; Bertha JÁUREGUI RODRÍGUEZ; Thelma B. PAVÓN; Graciela V. MEJÍA PEDRERO

7

Non-random sharing of Plantae genes.  

PubMed

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

Chan, Cheong Xin; Bhattacharya, Debashish

2011-05-01

8

Hyperthermophilic endoglucanase for in planta lignocellulose conversion  

PubMed Central

Background The enzymatic conversion of lignocellulosic plant biomass into fermentable sugars is a crucial step in the sustainable and environmentally friendly production of biofuels. However, a major drawback of enzymes from mesophilic sources is their suboptimal activity under established pretreatment conditions, e.g. high temperatures, extreme pH values and high salt concentrations. Enzymes from extremophiles are better adapted to these conditions and could be produced by heterologous expression in microbes, or even directly in the plant biomass. Results Here we show that a cellulase gene (sso1354) isolated from the hyperthermophilic archaeon Sulfolobus solfataricus can be expressed in plants, and that the recombinant enzyme is biologically active and exhibits the same properties as the wild type form. Since the enzyme is inactive under normal plant growth conditions, this potentially allows its expression in plants without negative effects on growth and development, and subsequent heat-inducible activation. Furthermore we demonstrate that the recombinant enzyme acts in high concentrations of ionic liquids and can therefore degrade ?-cellulose or even complex cell wall preparations under those pretreatment conditions. Conclusion The hyperthermophilic endoglucanase SSO1354 with its unique features is an excellent tool for advanced biomass conversion. Here we demonstrate its expression in planta and the possibility for post harvest activation. Moreover the enzyme is suitable for combined pretreatment and hydrolysis applications. PMID:22928996

2012-01-01

9

Traditional plants as source of functional foods: a review Plantas tradicionales como fuente de alimentos funcionales: una revisión  

Microsoft Academic Search

The aim of this work was to assess the following plants as functional foods that can be found in Mexico: white sapote (Casimiroa edulis), jicama (Pachyrhizus spp.), amaranth (Amaranthus hypochondriacus), sweet fennel (Foeniculum vulgare), oregano (Lippia graveolens), pitahaya (Hylocereus sp.), agave (Agave americana), pelitre (Heliopsis longipes), and purslane (Portulaca oleracea L). The main characteristics, components and active substances, forms of

G. Rivera; V. Bocanegra-García; A. Monge

2010-01-01

10

Una obra uruguaya en Madrid  

E-print Network

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

Blaylock, Curtis

1986-04-01

11

Omar Grasso, una pasión teatral  

E-print Network

cambiarla. Por eso su crudeza, su indignación, su rabia, como respuesta dramática. Esa fue la vida de Grégor Díaz y toda su obra. Domingo Piga Lima Ornar Grasso, una pasión teatral El telón final ha caído sobre la vida talentosa de un gran hombre de...

Bogado, Ví ctor

2002-04-01

12

La Transpiración - Movimiento del Agua a Través de las Plantas  

NSDL National Science Digital Library

La transpiración es la pérdida de agua en forma de vapor por las plantas. El agua es absorbida del suelo por las raíces y transportada en forma líquida por el xilema hacia las hojas. En las hojas, unos pequeños poros permiten que el agua (H2O) escape a la atmósfera en forma de vapor, al tiempo que se permite la entrada de bióxido de carbono (CO2) para la fotosíntesis. De toda el agua absorbida por las plantas, menos del 5% es retenida y utilizada para crecimiento y almacenamiento. En esta lección se explicará porque las plantas pierden tanta agua, la ruta que ésta sigue dentro de la planta, como pudieran las plantas controlar la pérdida excesiva de agua y como las condiciones ambientales influyen en la pérdida de agua por las plantas.

13

Una tarde con Héctor Mendoza  

E-print Network

hay más. Mira, realmente, les voy a contar. Lo que me sucede ahora es que me he preocupado terriblemente por la teoría de la actuación, y lo que estoy haciendo son textos teóricos sobre la actuación. Ahora lo que hago es una obra mezclada con la... teoría de la actuación. Siento que tomar un texto de los Siglos de Oro, que son textos que ya me son muy familiares, entonces, se me facilita muchísimo más para su manejo; en este sentido, ¿no? Ahora, yo siento que se me facilita también tomar un texto...

Padró n-Leó n, Bá rbara A.; Peale, C. George

1999-10-01

14

In planta production of indole-3-acetic acid by Colletotrichum gloeosporioides f. sp. aeschynomene.  

PubMed

The plant pathogenic fungus Colletotrichum gloeosporioides f. sp. aeschynomene utilizes external tryptophan to produce indole-3-acetic acid (IAA) through the intermediate indole-3-acetamide (IAM). We studied the effects of tryptophan, IAA, and IAM on IAA biosynthesis in fungal axenic cultures and on in planta IAA production by the fungus. IAA biosynthesis was strictly dependent on external tryptophan and was enhanced by tryptophan and IAM. The fungus produced IAM and IAA in planta during the biotrophic and necrotrophic phases of infection. The amounts of IAA produced per fungal biomass were highest during the biotrophic phase. IAA production by this plant pathogen might be important during early stages of plant colonization. PMID:15006816

Maor, Rudy; Haskin, Sefi; Levi-Kedmi, Hagit; Sharon, Amir

2004-03-01

15

Programmable Plants: Development of an in planta System for the Remote Monitoring and Control of Plant Function for Life Support  

Microsoft Academic Search

In this Phase I study we explored the revolutionary concept of using genomics and nanotechnology together for the development of plants with traits suitable for human life support in non -Earth environments. This includes the potential for the use of remote monitoring and control devices in planta and ex planta as part of an overall architecture of human and autonomous

Christopher S. Brown

16

Captulo 1 Redes complejas de interacciones mutualistas planta-animal 17  

E-print Network

#12;Capítulo 1 Redes complejas de interacciones mutualistas planta-animal 17 CAPÍTULO 1 Redes aproximación transdisciplinaria de redes complejas ( Jordano, 1987; Müller et al., 1999; Memmott y Waser, 2002; Montoya et al., 2006; Bascompte y Jordano, 2007). El enfoque de redes complejas al estudio de

Jordano, Pedro

17

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

PubMed Central

Background The photosynthetic organelle (plastid) originated via primary endosymbiosis in which a phagotrophic protist captured and harnessed a cyanobacterium. The plastid was inherited by the common ancestor of the red, green (including land plants), and glaucophyte algae (together, the Plantae). Despite the critical importance of primary plastid endosymbiosis, its ancient derivation has left behind very few “footprints” of early key events in organelle genesis. Methodology/Principal Findings To gain insights into this process, we conducted an in-depth phylogenomic analysis of genomic data (nuclear proteins) from 17 Plantae species to identify genes of a surprising provenance in these taxa, Chlamydiae bacteria. Previous studies show that Chlamydiae contributed many genes (at least 21 in one study) to Plantae that primarily have plastid functions and were postulated to have played a fundamental role in organelle evolution. Using our comprehensive approach, we identify at least 55 Chlamydiae-derived genes in algae and plants, of which 67% (37/55) are putatively plastid targeted and at least 3 have mitochondrial functions. The remainder of the proteins does not contain a bioinformatically predicted organelle import signal although one has an N-terminal extension in comparison to the Chlamydiae homolog. Our data suggest that environmental Chlamydiae were significant contributors to early Plantae genomes that extend beyond plastid metabolism. The chlamydial gene distribution and protein tree topologies provide evidence for both endosymbiotic gene transfer and a horizontal gene transfer ratchet driven by recurrent endoparasitism as explanations for gene origin. Conclusions/Significance Our findings paint a more complex picture of gene origin than can easily be explained by endosymbiotic gene transfer from an organelle-like point source. These data significantly extend the genomic impact of Chlamydiae on Plantae and show that about one-half (30/55) of the transferred genes are most closely related to sequences emanating from the genome of the only environmental isolate that is currently available. This strain, Candidatus Protochlamydia amoebophila UWE25 is an endosymbiont of Acanthamoeba and likely represents the type of endoparasite that contributed the genes to Plantae. PMID:18493612

Bhattacharya, Debashish

2008-01-01

18

Melvin Méndez: Una nueva dramaturgia costarricense  

E-print Network

FALL 1991 141 Melvin Méndez: Una nueva dramaturgia costarricense Pedro Bravo-Elizondo Melvin Méndez (1958) realizó su carrera de actuación en la Escuela de Teatro de la Universidad de Costa Rica. En 1980 obtuvo el Premio Nacional como mejor...

Bravo-Elizondo, Pedro

1991-10-01

19

In una classe V elementare inserita Piera, una ragazzina peruviana di 13 anni. Le maestre richiedono una consulenza psicologica rilevando le seguenti problematiche  

E-print Network

Prova 1 In una classe V elementare è inserita Piera, una ragazzina peruviana di 13 anni. Le maestre padronanza della lingua italiana, malgrado viva in Italia da 7 anni 2- Riesce ad elaborare con difficoltà solo rapporto di amicizia con la compagna di banco, una ragazzina di 14 anni con una pesante situazione

Di Pillo, Gianni

20

Una aproximación didáctica al Guernica de Picasso  

Microsoft Academic Search

L’article presenta una aproximació al Guernica, de Pablo Picasso, mitjançant l’anàlisi de les seves possibilitats per a l’estudi de la pintura i de la relació entre la creació i el coneixement de la Història de l’Art. Al mateix temps, es presenta un model de treball que s’inicia amb una mirada als problemes derivats de l’observació per tal d’assolir la interpretació

Antonia Fernández Valencia

2003-01-01

21

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

PubMed Central

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

2012-01-01

22

Caracterização socio-econômico-cultural de raizeiros e procedimentos pós-colheita de plantas medicinais comercializadas em Maceió, AL  

Microsoft Academic Search

RESUMO: Objetivou-se, com este trabalho, estabelecer o perfil sócio-econômico-cultural de raizeiros, bem como executar um levantamento dos procedimentos pós-colheita para as plantas medicinais comercializadas em feiras e mercados ao ar livre na cidade de Maceió, AL. Foram abordados aspectos sociais, econômicos e culturais de 46 raizeiros, bem como os procedimentos pós-colheita adotados para a conservação das plantas medicinais comercializadas no

César de Araújo

23

Aplicaciones prácticas de la fisiología de los herbicidas en las plantas  

NSDL National Science Digital Library

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

24

Mountain Goat Software, LLC Una Introduccin a  

E-print Network

Mountain Goat Software, LLC Una Introducción a Scrum Mike Cohen Traducido: Ernesto Grafeuille Revisado y modificado: Pedro Cabalar Noviembre 2013 #12;Mountain Goat Software, LLC Estamos perdiendo la hacia atrás -pueden servir mejor a los actuales requisitos competitivos". #12;Mountain Goat Software

Cabalar, Pedro

25

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,...

26

AtHKT1 Facilitates Na+ Homeostasis and K+ Nutrition in Planta1  

PubMed Central

Genetic and physiological data establish that Arabidopsis AtHKT1 facilitates Na+ homeostasis in planta and by this function modulates K+ nutrient status. Mutations that disrupt AtHKT1 function suppress NaCl sensitivity of sos1-1 and sos2-2, as well as of sos3-1 seedlings grown in vitro and plants grown in controlled environmental conditions. hkt1 suppression of sos3-1 NaCl sensitivity is linked to higher Na+ content in the shoot and lower content of the ion in the root, reducing the Na+ imbalance between these organs that is caused by sos3-1. AtHKT1 transgene expression, driven by its innate promoter, increases NaCl but not LiCl or KCl sensitivity of wild-type (Col-0 gl1) or of sos3-1 seedlings. NaCl sensitivity induced by AtHKT1 transgene expression is linked to a lower K+ to Na+ ratio in the root. However, hkt1 mutations increase NaCl sensitivity of both seedlings in vitro and plants grown in controlled environmental conditions, which is correlated with a lower K+ to Na+ ratio in the shoot. These results establish that AtHKT1 is a focal determinant of Na+ homeostasis in planta, as either positive or negative modulation of its function disturbs ion status that is manifested as salt sensitivity. K+-deficient growth of sos1-1, sos2-2, and sos3-1 seedlings is suppressed completely by hkt1-1. AtHKT1 transgene expression exacerbates K+ deficiency of sos3-1 or wild-type seedlings. Together, these results indicate that AtHKT1 controls Na+ homeostasis in planta and through this function regulates K+ nutrient status. PMID:15347798

Rus, Ana; Lee, Byeong-ha; Muñoz-Mayor, Alicia; Sharkhuu, Altanbadralt; Miura, Kenji; Zhu, Jian-Kang; Bressan, Ray A.; Hasegawa, Paul M.

2004-01-01

27

Su una teoria bilocale dell’interazione tra una particella con spin 1\\/2 e il campo elettromagnetico  

Microsoft Academic Search

\\u000a Riassunto  Si presenta una teoria bilocale per una particella libera con spin 1\\/2 fondata su una semplice generalizzazione lineare dell’equazione\\u000a di Dirac. Si risolve tale equazione introducendo una condizione di quantizzazione della massa e una nuova condizione supplementare\\u000a che sostituisce la eondizione di Yukawa usata in un precedente lavoro. La generalizzazione della teoria è tale che nelle equazioni\\u000a le coordinate del

E. Minardi

1956-01-01

28

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

PubMed Central

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

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

2009-01-01

29

Tentativo di una Teoria Dei Raggi ?  

Microsoft Academic Search

Sunto  Si propone una teoria quantitativa dell’emissione dei raggi \\\\ in cui si ammette l’esistenza del « neutrino » e si tratta l’emissione\\u000a degli elettroni e dei neutrini da un nucleo all’alto della disintegrazione ? con un procedimento simile a quello seguito nella\\u000a teoria dell’ irradiazione per descrivere l’emissione di un quanto di luce da un atomo eccitato. Vengono dedotte delle

Enrico Fermi

1934-01-01

30

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

E-print Network

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

Quirk, Gregory J.

31

Mexican papita viroid and tomato planta macho viroid belong to a single species in the genus Pospiviroid  

Technology Transfer Automated Retrieval System (TEKTRAN)

Tomato planta macho viroid (TPMVd) and Mexican papita viroid (MPVd) are two closely-related (>90% sequence identity) members of the genus Pospiviroid. Their current status as separate species is based upon the reported ability of TPMVd to replicate in Gomphrena globosa and the inability of this viro...

32

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

E-print Network

G. Leubner-Metzger et al.: �-1,3-Glucanase and tobacco seed germination - 1 - Planta (1996) 199,3-glucanase induction in tobacco seed germination Gerhard Leubner-Metzger, Corinne Fründt, Frederick Meins, Jr.g. 10-5 M GA4 or GA7) can substitute for light in releasing dormancy. Measurements of �-1,3-glucanase

Leubner, Gerhard

33

In planta transformation method for T-DNA transfer in orchids  

NASA Astrophysics Data System (ADS)

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

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

2014-03-01

34

Elementos para una 'Teoría' teatral libertaria (Argentina 1900)  

E-print Network

actividades de orientación popular. 2 - DE LA REFLEXION CRITICA HACIA UNA NORMATIVA Dicha actividad literario-teatral (edición, espectáculo) apareció continuamente completada por una dimensión crítica, presente en los numerosos comentarios que se llevaban... espectadores a las veladas teatrales ("Si se reúnen quinientos compañeros para ver repre sentar dramas"), cifra que debía verse superada más de una vez, a juzgar por algunos balances de fondos recolectados por los distintos centros libertarios.7 La...

Golluscio de Montoya, Eva

1987-10-01

35

Native-sized spider silk proteins synthesized in planta via intein-based multimerization.  

PubMed

The synthesis of native-sized proteins is a pre-requisite for exploiting the potential of spider silk as a bio-based material. The unique properties of spider silk, such as extraordinary tensile strength and elasticity, result from the highly repetitive nature of spider silk protein motifs. The present report describes the combination of spider silk flagelliform protein (FLAG) production in the endoplasmic reticulum of tobacco plant leaf cells with an intein-based posttranslational protein fusion technology. The repeated ligation of FLAG monomers resulted in the formation of large multimers. This method avoids the need for highly repetitive transgenes, which may result in a higher genetic and transcriptional stability. Here we show, for the first time, the production of synthetic, high molecular weight spider silk proteins larger than 250 kDa based on the assembly of protein monomers via intein-mediated trans-splicing in planta. The resulting multimeric structures form microfibers, thereby demonstrating their great potential as a biomaterial. PMID:23001519

Hauptmann, Valeska; Weichert, Nicola; Menzel, Matthias; Knoch, Dominic; Paege, Norman; Scheller, Jürgen; Spohn, Uwe; Conrad, Udo; Gils, Mario

2013-04-01

36

Analysis of in planta Expressed Orphan Genes in the Rice Blast Fungus Magnaporthe oryzae  

PubMed Central

Genomes contain a large number of unique genes which have not been found in other species. Although the origin of such “orphan” genes remains unclear, they are thought to be involved in species-specific adaptive processes. Here, we analyzed seven orphan genes (MoSPC1 to MoSPC7) prioritized based on in planta expressed sequence tag data in the rice blast fungus, Magnaporthe oryzae. Expression analysis using qRT-PCR confirmed the expression of four genes (MoSPC1, MoSPC2, MoSPC3 and MoSPC7) during plant infection. However, individual deletion mutants of these four genes did not differ from the wild-type strain for all phenotypes examined, including pathogenicity. The length, GC contents, codon adaptation index and expression during mycelial growth of the four genes suggest that these genes formed during the evolutionary history of M. oryzae. Synteny analyses using closely related fungal species corroborated the notion that these genes evolved de novo in the M. oryzae genome. In this report, we discuss our inability to detect phenotypic changes in the four deletion mutants. Based on these results, the four orphan genes may be products of de novo gene birth processes, and their adaptive potential is in the course of being tested for retention or extinction through natural selection. PMID:25506301

Sadat, Abu; Jeon, Junhyun; Mir, Albely Afifa; Kim, Seongbeom; Choi, Jaeyoung; Lee, Yong-Hwan

2014-01-01

37

Rad54 is not essential for any geminiviral replication mode in planta.  

PubMed

The circular single-stranded DNA of phytopathogenic geminiviruses is propagated by three modes: complementary strand replication (CSR), rolling circle replication (RCR) and recombination-dependent replication (RDR), which need host plant factors to be carried out. In addition to necessary host polymerases, proteins of the homologous recombination repair pathway may be considered essential, since geminiviruses are particularly prone to recombination. Among several others, Rad54 was suggested to be necessary for the RCR of Mungbean yellow mosaic India virus. This enzyme is a double-stranded DNA-dependent ATPase and chromatin remodeller and was found to bind and modulate the viral replication-initiator protein in vitro and in Saccharomyces cerevisiae. In contrast to the previous report, we scrutinized the requirement of Rad54 in planta for two distinct fully infectious geminiviruses with respect to the three replication modes. Euphorbia yellow mosaic virus and Cleome leaf crumple virus were inoculated into Rad54-deficient and wildtype Arabidopsis thaliana plant lines to compare the occurrence of viral DNA forms. Replication intermediates were displayed in the time course of infection by one and two-dimensional agarose gel electrophoresis and Southern hybridization. The experiments showed that Rad54 was neither essential for CSR, RCR nor RDR, and it had no significant influence on virus titers during systemic infection. PMID:25492528

Richter, Kathrin S; Ende, Lukas; Jeske, Holger

2015-01-01

38

In planta selfing and oospore production of Phytophthora cinnamomi in the presence of Acacia pulchella.  

PubMed

This paper provides the first evidence of A2 type 1 and type 2 isolates of Phytophthora cinnamomi producing selfed oospores in planta in an Australian soil and in a potting mix. Oospores were observed in infected lupin (Lupinus angustifolius) roots incubated for 7d either in the substrate under potted Acacia pulchella plants, or in soils collected from under and near varieties of A. pulchella in jarrah (Eucalyptus marginata) forest. The A2 type isolates varied in their ability to produce selfed oospores and none were produced by A1 isolates. The gametangial association was amphigynous and spores were predominantly spherical with diameters from 13-40 microm. The oospores were viable but dormant. Two A2 type isolates produced small numbers of selfed oospores with amphigynous antheridia axenically in Ribeiro's liquid medium within 30 d, and one A2 type 2 isolate produced oospores after mating with an A1 strain. Evidence is presented that the presence of roots of Acacia pulchella, and particularly A. pulchella var. glaberrima and var. goadbyi, enhances the production of oospores. PMID:17350243

Jayasekera, Arunodini U; McComb, Jen A; Shearer, Bryan L; Hardy, Giles E St J

2007-03-01

39

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

PubMed

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

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

2010-02-01

40

Characterization of VIP1 activity as a transcriptional regulator in vitro and in planta  

PubMed Central

VIP1 (VirE2 interacting protein 1), initially discovered as a host protein involved in Agrobacterium-plant cell DNA transfer, is a transcription factor of the basic leucine-zipper (bZIP) domain family that regulates several defence-related genes in Arabidopsis. We have developed assays to assess VIP1 binding to its DNA target in vitro and transcriptional activation efficiency in planta. Several point mutations in the VIP1 response element VRE affected the VIP1 activity, and a strong correlation between VIP1-VRE binding and transcriptional activation levels was observed. Promoter activation by VIP1 was influenced by bacterial and plant proteins known to interact with VIP1 during Agrobacterium infection, i.e., VirE2, VirF and VIP2. VirF, an F-box protein, strongly decreased VIP1 transcriptional activation ability, but not its binding to VRE in vitro, most likely by triggering proteasomal degradation of VIP1. Finally, activation of a VRE-containing promoter was observed in dividing cells, probably resulting from activation of endogenous VIP1. PMID:23942522

Lacroix, Benoît; Citovsky, Vitaly

2013-01-01

41

In planta Production of Flock House Virus Transencapsidated RNA and Its Potential Use as a Vaccine.  

PubMed

We have developed a transencapsidated vaccine delivery system based on the insect virus, Flock House virus (FHV). FHV is attractive due to its small genome size, simple organization, and nonpathogenic characteristics. With the insertion of a Tobacco mosaic virus (TMV) origin of assembly (Oa), the independently replicating FHV RNA1 can be transencapsidated by TMV coat protein. In this study, we demonstrated that the Oa-adapted FHV RNA1 transencapsidation process can take place in planta, by using a bipartite plant expression vector system, where TMV coat protein is expressed by another plant virus vector, Foxtail mosaic virus (FoMV). Dual infection in the same cell by both FHV and FoMV was observed. Though an apparent classical coat protein-mediated resistance repressed FHV expression, this was overcome by delaying inoculation of the TMV coat protein vector by 3 days after FHV vector inoculation. Expression of the transgene marker in animals by these in vivo-generated transencapsidated nanoparticles was confirmed by mouse vaccination, which also showed an improved vaccine response compared to similar in vitro-produced vaccines. PMID:25432792

Zhou, Yiyang; Maharaj, Payal D; Mallajosyula, Jyothi K; McCormick, Alison A; Kearney, Christopher M

2014-11-29

42

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

PubMed

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

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

2013-09-01

43

Che cosa spiega una teoria dell'arte? Roberto Casati  

E-print Network

Che cosa spiega una teoria dell'arte? Roberto Casati Institut Jean Nicod EHESS-ENS CNRS, Paris, e'analisi intellettuale. Non c'è a tutt'oggi una teoria consensuale che renda conto della natura degli oggetti d'arte: ma non esiste nemmeno un'idea chiara di che cosa dovrebbe spiegare tale teoria. Si registrano invece dei

Paris-Sud XI, Université de

44

Formalizaci on del razonamiento ecuacional en una l ogica computacional  

E-print Network

Formalizaci#19;on del razonamiento ecuacional en una l#19;ogica computacional J.L. Ruiz, J formalizaci#19;on en una l#19;ogica computacional (la l#19;ogica de ACL2), de diversas propiedades de la l#19 propiedades de sistemas de computaci#19;on, la denominamos l#19;ogica computacional. La principal ventaja que

Reina, José Luis Ruiz

45

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

PubMed Central

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

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

2010-01-01

46

Nodularin, a cyanobacterial toxin, is synthesized in planta by symbiotic Nostoc sp.  

PubMed

The nitrogen-fixing bacterium, Nostoc, is a commonly occurring cyanobacterium often found in symbiotic associations. We investigated the potential of cycad cyanobacterial endosymbionts to synthesize microcystin/nodularin. Endosymbiont DNA was screened for the aminotransferase domain of the toxin biosynthesis gene clusters. Five endosymbionts carrying the gene were screened for bioactivity. Extracts of two isolates inhibited protein phosphatase 2A and were further analyzed using electrospray ionization mass spectrometry (ESI-MS)/MS. Nostoc sp. 'Macrozamia riedlei 65.1' and Nostoc sp. 'Macrozamia serpentina 73.1' both contained nodularin. High performance liquid chromatography (HPLC) HESI-MS/MS analysis confirmed the presence of nodularin at 9.55±2.4?ng ?g-1 chlorophyll a in Nostoc sp. 'Macrozamia riedlei 65.1' and 12.5±8.4?ng??g-1 Chl a in Nostoc sp. 'Macrozamia serpentina 73.1' extracts. Further scans indicated the presence of the rare isoform [L-Har(2)] nodularin, which contains L-homoarginine instead of L-arginine. Nodularin was also present at 1.34±0.74?ng?ml(-1) (approximately 3?pmol per g plant ww) in the methanol root extracts of M. riedlei MZ65, while the presence of [L-Har(2)] nodularin in the roots of M. serpentina MZ73 was suggested by HPLC HESI-MS/MS analysis. The ndaA-B and ndaF genomic regions were sequenced to confirm the presence of the hybrid polyketide/non-ribosomal gene cluster. A seven amino-acid insertion into the NdaA-C1 domain of N. spumigena NSOR10 protein was observed in all endosymbiont-derived sequences, suggesting the transfer of the nda cluster from N. spumigena to terrestrial Nostoc species. This study demonstrates the synthesis of nodularin and [L-Har(2)] nodularin in a non-Nodularia species and the production of cyanobacterial hepatotoxin by a symbiont in planta. PMID:22456448

Gehringer, Michelle M; Adler, Lewis; Roberts, Alexandra A; Moffitt, Michelle C; Mihali, Troco K; Mills, Toby J T; Fieker, Claus; Neilan, Brett A

2012-10-01

47

In planta reduction of maize seedling stalk lesions by the bacterial endophyte Bacillus mojavensis.  

PubMed

Maize (Zea mays L.) is susceptible to infection by Fusarium verticillioides through autoinfection and alloinfection, resulting in diseases and contamination of maize kernels with the fumonisin mycotoxins. Attempts at controlling this fungus are currently being done with biocontrol agents such as bacteria, and this includes bacterial endophytes, such as Bacillus mojavensis . In addition to producing fumonisins, which are phytotoxic and mycotoxic, F. verticillioides also produces fusaric acid, which acts both as a phytotoxin and as an antibiotic. The question now is Can B. mojavensis reduce lesion development in maize during the alloinfection process, simulated by internode injection of the fungus? Mutant strains of B. mojavensis that tolerate fusaric acid were used in a growth room study to determine the development of stalk lesions, indicative of maize seedling blight, by co-inoculations with a wild-type strain of F. verticillioides and with non-fusaric acid producing mutants of F. verticillioides. Lesions were measured on 14-day-old maize stalks consisting of treatment groups inoculated with and without mutants and wild-type strains of bacteria and fungi. The results indicate that the fusaric-acid-tolerant B. mojavensis mutant reduced stalk lesions, suggesting an in planta role for this substance as an antibiotic. Further, lesion development occurred in maize infected with F. verticillioides mutants that do not produce fusaric acid, indicating a role for other phytotoxins, such as the fumonisins. Thus, additional pathological components should be examined before strains of B. mojavensis can be identified as being effective as a biocontrol agent, particularly for the control of seedling disease of maize. PMID:21635192

Bacon, Charles W; Hinton, Dorothy M

2011-06-01

48

RNA-guided transcriptional regulation in planta via synthetic dCas9-based transcription factors.  

PubMed

Targeted genomic regulation is a powerful approach to accelerate trait discovery and development in agricultural biotechnology. Bacteria and archaea use clustered regularly interspaced short palindromic repeats (CRISPRs) and CRISPR-associated (Cas) regulatory systems for adaptive molecular immunity against foreign nucleic acids introduced by invading phages and conjugative plasmids. The type II CRISPR/Cas system has been adapted for genome editing in many cell types and organisms. A recent study used the catalytically inactive Cas9 (dCas9) protein combined with guide-RNAs (gRNAs) as a DNA-targeting platform to modulate gene expression in bacterial, yeast, and human cells. Here, we modified this DNA-targeting platform for targeted transcriptional regulation in planta by developing chimeric dCas9-based transcriptional activators and repressors. To generate transcriptional activators, we fused the dCas9 C-terminus with the activation domains of EDLL and TAL effectors. To generate a transcriptional repressor, we fused the dCas9 C-terminus with the SRDX repression domain. Our data demonstrate that dCas9 fusion with the EDLL activation domain (dCas9:EDLL) and the TAL activation domain (dCas9:TAD), guided by gRNAs complementary to selected promoter elements, induce strong transcriptional activation on Bs3::uidA targets in plant cells. Further, the dCas9:SRDX-mediated transcriptional repression of an endogenous gene. Thus, our results suggest that the synthetic transcriptional repressor (dCas9:SRDX) and activators (dCas9:EDLL and dCas9:TAD) can be used as endogenous transcription factors to repress or activate transcription of an endogenous genomic target. Our data indicate that the CRISPR/dCas9 DNA-targeting platform can be used in plants as a functional genomics tool and for biotechnological applications. PMID:25400128

Piatek, Agnieszka; Ali, Zahir; Baazim, Hatoon; Li, Lixin; Abulfaraj, Aala; Al-Shareef, Sahar; Aouida, Mustapha; Mahfouz, Magdy M

2014-11-14

49

Doble o Más: Doblar o Triplicar Una Receta  

NSDL National Science Digital Library

Escoja una receta para doblarla (o triplicarla, cuadruplicarla, o partirla). Enseñe la receta a todo el grupo y pregúnteles: Cuánto vamos a necesitar para incrementar la receta para que todos puedan comer? Cómo lo saben? Una vez el grupo ha decidido cómo modificar la receta, asigne un ingrediente para incrementar y medir. A medida que los chicos deciden cómo hacerlo, exploran fracciones, multiplicación, y suma. Pruebe esta actividad con comida, una “receta” para combinar pinturas para conseguir determinados colores, o para hacer masilla para modelar. Disponible en formato web, en formato pdf, y en inglés.

2011-08-20

50

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

PubMed Central

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

Gookin, Timothy E; Assmann, Sarah M

2014-01-01

51

In planta gene expression analysis of Xanthomonas oryzae pathovar oryzae, African strain MAI1  

PubMed Central

Background Bacterial leaf blight causes significant yield losses in rice crops throughout Asia and Africa. Although both the Asian and African strains of the pathogen, Xanthomonas oryzae pv. oryzae (Xoo), induce similar symptoms, they are nevertheless genetically different, with the African strains being more closely related to the Asian X. oryzae pv. oryzicola (Xoc). Results Changes in gene expression of the African Xoo strain MAI1 in the susceptible rice cultivar Nipponbare were profiled, using an SSH Xoo DNA microarray. Microarray hybridization was performed comparing bacteria recovered from plant tissues at 1, 3, and 6 days after inoculation (dai) with bacteria grown in vitro. A total of 710 bacterial genes were found to be differentially expressed, with 407 up-regulated and 303 down-regulated. Expression profiling indicated that less than 20% of the 710 bacterial transcripts were induced in the first 24 h after inoculation, whereas 63% were differentially expressed at 6 dai. The 710 differentially expressed genes were one-end sequenced. 535 sequences were obtained from which 147 non-redundant sequences were identified. Differentially expressed genes were related to metabolism, secretion and transport, pathogen adherence to plant tissues, plant cell-wall degradation, IS elements, and virulence. In addition, various other genes encoding proteins with unknown function or showing no similarity to other proteins were also induced. The Xoo MAI1 non-redundant set of sequences was compared against several X. oryzae genomes, revealing a specific group of genes that was present only in MAI1. Numerous IS elements were also found to be differentially expressed. Quantitative real-time PCR confirmed 86% of the identified profile on a set of 14 genes selected according to the microarray analysis. Conclusions This is the first report to compare the expression of Xoo genes in planta across different time points during infection. This work shows that as-yet-unidentified and potentially new virulence factors are appearing in an emerging African pathogen. It also confirms that African Xoo strains do differ from their Asian counterparts, even at the transcriptional level. PMID:20540733

2010-01-01

52

Consentimiento informado: una praxis dialogica para la investigacion  

PubMed Central

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

Mondragon-Barrios, Liliana

2009-01-01

53

Una (mica tanto) breve introduzione a LATEX 2  

E-print Network

:/tex-archive/ info/lshort/german Nel corso della stesura di questo documento ho cercato dei revisori su comp. text una delle persone qui sotto che mi ha passato due righe. #12;iv Ringraziamenti Rosemary Bailey

Benfatto, Giuseppe

54

Una introduzione alla teoria delle equazioni integrali singolari  

Microsoft Academic Search

\\u000a Questa Menioria, a carattere prevalentemente monografico, si propone di presentare una trattazione, per quanto possibile sistema-tiea\\u000a e completa, delle equazioni integrali singolari relative ad una curva chiusa del piano e che principalmente si presentano\\u000a nello studio delle equazioni alle derivate parziali di tipo ellittico.\\u000a \\u000a \\u000a Occorre subito dire che esistono due pregevoli trattazioni delle equazioni singolari sulle curve del piano. La

Gaetano Fichera

55

Utilização da radiação gama do Cobalto-60 como tratamento quarentenário de plantas medicinais, aromáticas e condimentares desidratadas infestadas por lasioderma serricorne (fabricius, 1792) (coleoptera, anobiidae) e plodia interpunctella (hubner, 1813) (lepidoptera, pyralidae).  

E-print Network

??A pesquisa teve como objetivo a utilização da radiação gama do Cobalto-60 como tratamento quarentenário de plantas medicinais, aromáticas e condimentares desidratadas infestadas por Lasioderma… (more)

Juliana Nazaré Alves

2007-01-01

56

Identification and characterization of in planta-expressed secreted effector proteins from Magnaporthe oryzae that induce cell death in rice.  

PubMed

Interactions between rice and Magnaporthe oryzae involve the recognition of cellular components and the exchange of complex molecular signals from both partners. How these interactions occur in rice cells is still elusive. We employed robust-long serial analysis of gene expression, massively parallel signature sequencing, and sequencing by synthesis to examine transcriptome profiles of infected rice leaves. A total of 6,413 in planta-expressed fungal genes, including 851 genes encoding predicted effector proteins, were identified. We used a protoplast transient expression system to assess 42 of the predicted effector proteins for the ability to induce plant cell death. Ectopic expression assays identified five novel effectors that induced host cell death only when they contained the signal peptide for secretion to the extracellular space. Four of them induced cell death in Nicotiana benthamiana. Although the five effectors are highly diverse in their sequences, the physiological basis of cell death induced by each was similar. This study demonstrates that our integrative genomic approach is effective for the identification of in planta-expressed cell death-inducing effectors from M. oryzae that may play an important role facilitating colonization and fungal growth during infection. PMID:23035914

Chen, Songbiao; Songkumarn, Pattavipha; Venu, R C; Gowda, Malali; Bellizzi, Maria; Hu, Jinnan; Liu, Wende; Ebbole, Daniel; Meyers, Blake; Mitchell, Thomas; Wang, Guo-Liang

2013-02-01

57

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

E-print Network

Cómo asar a la parrilla de una manera segura Asar alimentos a la parrilla es una manera divertida descongele completamente y se cueza parejo. También puede descongelar alimentos en el microondas, pero si lo microbios que hacen que se enferme la gente. Marine los alimentos de una manera segura para darles sabor

58

The application of laser microdissection to in planta gene expression profiling of the maize anthracnose stalk rot fungus Colletotrichum graminicola.  

PubMed

Laser microdissection (LM) offers a potential means for deep sampling of a fungal plant-pathogen transcriptome during the infection process using whole-genome DNA microarrays. The use of a fluorescent protein-expressing fungus can greatly facilitate the identification of fungal structures for LM sampling. However, fixation methods that preserve both tissue histology and protein fluorescence, and that also yield RNA of suitable quality for microarray applications, have not been reported. We developed a microwave-accelerated acetone fixation, paraffin-embedding method that fulfills these requirements and used it to prepare mature maize stalk tissues infected with an Anemonia majano cyan fluorescent protein-expressing isolate of the anthracnose stalk rot fungus Colletotrichum graminicola. We successfully used LM to isolate individual maize cells associated with C. graminicola hyphae at an early stage of infection. The LM-derived RNA, after two-round linear amplification, was of sufficient quality and quantity for global expression profiling using a fungal microarray. Comparing replicated LM samples representing an early stage of stalk cell infection with samples from in vitro-germinated conidia, we identified 437 and 370 C. graminicola genes showing significant up- or downregulation, respectively. We confirmed the differential expression of several representative transcripts by quantitative reverse-transcriptase polymerase chain reaction (RT-PCR) and documented extensive overlap of this dataset with a PCR-subtraction library enriched for C. graminicola transcripts in planta. Our results demonstrate that LM is feasible for in planta pathogen expression profiling and can reveal clues about fungal genes involved in pathogenesis. The method in this report may be advantageous for visualizing a variety of cellular features that depend on a high degree of histochemical preservation and RNA integrity prior to LM. PMID:17073306

Tang, Weihua; Coughlan, Sean; Crane, Edmund; Beatty, Mary; Duvick, Jon

2006-11-01

59

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

NASA Astrophysics Data System (ADS)

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

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

2001-10-01

60

EL HISPANISMO MUSICAL FRANCÉS: HACIA UNA REVISIÓN DE LA ESPAÑOLADA  

Microsoft Academic Search

En la segunda mitad del siglo XIX se intensifican ciertos tópicos sobre la imagen pintoresca de España difundida en Europa años atrás, culminando en una moda que ha sido calificada como «la españolada». A esta imagen contribuyeron también pintores españoles establecidos en Francia, el éxito de la pintura costumbrista hispana en los salones aristocráticos franceses y la oficialización de esta

Francisco J. Giménez Rodríguez

2005-01-01

61

Mercados base de pirámide: una revisión de literatura  

Microsoft Academic Search

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

María Paula Castaño Villamil; María Vanessa Rodríguez Tovar

2010-01-01

62

TURISMO DEL VINO: UNA APROXIMACIÓN A LAS BUENAS PRÁCTICAS  

Microsoft Academic Search

Durante las dos últimas décadas se aprecia una evolución importante de los intereses y exigencias de los consumidores de actividades turísticas. Estos intereses se han enfocado sobre todo en destinos geográficos que poseen patrimonios culturales, gastronomía tradicional, prácticas religiosas y otros atractivos turísticos que responden a las nuevas necesidades y demandas de los turistas durante su tiempo de ocio. Al

Ma. Genoveva Millán Vázquez de la Torre; Emilio Morales-Fernández; María Sol Castro-Freire

2012-01-01

63

"Come scrivere una proposta Marie Sklodowska-Curie individuale"  

E-print Network

"Come scrivere una proposta Marie Sklodowska-Curie individuale" (con particolare riferimento al billion #12;KEY FEATURES of Marie Sklodowska-Curie ACTIONS #12; Encourage new, creative types of training in detail: Marie Sklodowska-Curie ACTIONS #12;Marie Sklodowska-Curie actions Marie Curie actions Marie

Di Pillo, Gianni

64

Anlisis para generar una teora fundamentada en los datos  

E-print Network

descubierto. Actividades: Nombrar Relacionar Integrar Schatzman y Strauss 73; Strauss y Corbin 98 #12 Selectiva: Integrar y refinar categorías Corbin 86; Strauss 87; Strauss y Corbin 1998 #12;Tipos de Códigos agrupan en un orden superior, de una manera más abstracta que los conceptos. Corbin 86; Strauss y Corbin

Escolano, Francisco

65

App. Android Accesible para una Rutina de Movilidad Articular y  

E-print Network

App. Android Accesible para una Rutina de Movilidad Articular y Espalda M. Redondo, H. García parte del tiempo · Disponible el Google Play · Gratuita · App futuras: ­ Pruebas de campo Origen: App para tonificación muscular · "Tono muscular, también conocido como tensión muscular residual

Boemo, Eduardo

66

Discriminación salarial por género en Chile: una mirada global  

Microsoft Academic Search

En este trabajo se realiza un análisis de la evolución de la discriminación salarial por género en Chile para el período 1990 y 2003, utilizando las Encuestas CASEN. Se aplica primero el método Oaxaca-Blinder y luego el de Oaxaca y Ransom, para verificar si existe una brecha salarial, conocer su magnitud y descomponer sus causas. Se corrigen las estimaciones de

Jeanette Fuentes; Amalia Palma; Rodrigo Montero

2005-01-01

67

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

SciTech Connect

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

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

1989-05-01

68

Localizacin no puntual: una perspectiva desde la Geometra Computacional  

E-print Network

Capítulo 7 Localización no puntual: una perspectiva desde la Geometría Computacional José Miguel- terio, logística y transporte, estadística, geometría computacional, etc. Con respecto a ésta última geometría computacional, destacando las técnicas y meto- dología más utilizadas. Para ello, observaremos que

Díaz-Báñez, José Miguel

69

In planta mechanism of action of leptospermone: impact of its physico-chemical properties on uptake, translocation, and metabolism.  

PubMed

Leptospermone is a natural ?-triketone that specifically inhibits the enzyme p-hydrophyphenylpyruvate dioxygenase, the same molecular target site as that of the commercial herbicide mesotrione. The ?-triketone-rich essential oil of Leptospermum scoparium has both preemergence and postemergence herbicidal activity, resulting in bleaching of treated plants and dramatic growth reduction. Radiolabeled leptospermone was synthesized to investigate the in planta mechanism of action of this natural herbicide. Approximately 50 % of the absorbed leptospermone was translocated to the foliage suggesting rapid acropetal movement of the molecule. On the other hand, very little leptospermone was translocated away from the point of application on the foliage, indicating poor phloem mobility. These observations are consistent with the physico-chemical properties of leptospermone, such as its experimentally measured logP and pK a values, and molecular mass, number of hydrogen donors and acceptors, and number of rotatable bonds. Consequently, leptospermone is taken up readily by roots and translocated to reach its molecular target site. This provides additional evidence that the anecdotal observation of allelopathic suppression of plant growth under ?-triketone-producing species may be due to the release of these phytotoxins in soils. PMID:23314892

Owens, Daniel K; Nanayakkara, N P Dhammika; Dayan, Franck E

2013-02-01

70

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

PubMed

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

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

1999-02-01

71

An optimized mRFP-based bimolecular fluorescence complementation system for the detection of protein-protein interactions in planta.  

PubMed

An existing bimolecular fluorescence complementation (BiFC) system, based on a monomeric red fluorescent protein (mRFP), has been optimized for the investigation of protein-protein interactions in planta. The expression plasmids, encoding the N-terminal amino acids (aa) 1-168 and the C-terminal aa 169-225 of the mRFP, allow N- or C-terminal fusion of a split mRFP, with the genes of interest. Two major improvements over the original vectors have been made. Firstly, the coding sequence of a GGGSGGG-linker has been integrated between mRFP sequences and the genes of interest. Secondly, a modified mini binary vector (?3.5 kb) was introduced as the backbone for the plant expression plasmids. Based on the results of yeast two-hybrid studies with plant viral proteins, interaction of viral proteins was tested in Nicotiana benthamiana plants and monitored by confocal laser scanning microscopy (CLSM). Plum pox virus coat protein and mutants thereof served as controls. The system was validated using the N-protein of Capsicum chlorosis virus for which a self-interaction was shown for the first time, the Tobacco mosaic virus coat protein and BC1 and BV1 of the Tomato yellow leaf curl Thailand virus. This optimized BiFC system provides a convenient alternative to other BiFC, as well as yeast two-hybrid assays, for detecting protein-protein interactions. PMID:21473882

Zilian, Eva; Maiss, Edgar

2011-06-01

72

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

PubMed Central

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

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

2014-01-01

73

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

PubMed Central

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

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

2013-01-01

74

Detection of plum pox potyviral protein-protein interactions in planta using an optimized mRFP-based bimolecular fluorescence complementation system.  

PubMed

In previous studies, protein interaction maps of different potyviruses have been generated using yeast two-hybrid (YTH) systems, and these maps have demonstrated a high diversity of interactions of potyviral proteins. Using an optimized bimolecular fluorescence complementation (BiFC) system, a complete interaction matrix for proteins of a potyvirus was developed for the first time under in planta conditions with ten proteins from plum pox virus (PPV). In total, 52 of 100 possible interactions were detected, including the self-interactions of CI, 6K2, VPg, NIa-Pro, NIb and CP, which is more interactions than have ever been detected for any other potyvirus in a YTH approach. Moreover, the BiFC system was shown to be able to localize the protein interactions, which was typified for the protein self-interactions indicated above. Additionally, experiments were carried out with the P3N-PIPO protein, revealing an interaction with CI but not with CP and supporting the involvement of P3N-PIPO in the cell-to-cell movement of potyviruses. No self-interaction of the PPV helper component-proteinase (HC-Pro) was detected using BiFC in planta. Therefore, additional experiments with turnip mosaic virus (TuMV) HC-Pro, PPV_HC-Pro and their mutants were conducted. The self-interaction of TuMV_HCpro, as recently demonstrated, and the self-interaction of the TuMV_ and PPV_HC-Pro mutants were shown by BiFC in planta, indicating that HC-Pro self-interactions may be species-specific. BiFC is a very useful and reliable method for the detection and localization of protein interactions in planta, thus enabling investigations under more natural conditions than studies in yeast cells. PMID:21880839

Zilian, Eva; Maiss, Edgar

2011-12-01

75

In Planta Regulation of Extension of an Endophytic Fungus and Maintenance of High Metabolic Rates in Its Mycelium in the Absence of Apical Extension  

PubMed Central

The fungus Neotyphodium lolii is an endophytic symbiont. It grows in the intercellular spaces of the perennial ryegrass Lolium perenne, producing secondary metabolites which enhance the fitness of the association over that of uninfected L. perenne. We report that the average number of hyphal strands in a given section of a leaf remains constant during the life of a leaf, indicating synchrony of leaf and hyphal extension, including cessation of hyphal extension when leaf extension ceases. We used a constitutively expressed reporter gene as an indicator of the mycelium's metabolic activity during and after hyphal extension. Reporter gene activity decreased when the mycelium stopped extending in liquid culture but not in planta. This indicates that in planta endophyte hyphae remain metabolically highly active when extension has ceased and throughout the life of the leaf they are colonizing. The behavior of the fungus in planta indicates the existence of signaling pathways which (i) synchronize the extension of leaf and hypha by regulating hyphal extension, (ii) suppress hyphal branching, and (iii) stop apical extension of fungal hyphae, without reducing the mycelium's metabolic activity. These signals may be crucial for the symbiosis, by allowing the endophyte to switch the focus of its metabolic activity from extension to the production of secondary metabolites. PMID:11722882

Tan, Yong Y.; Spiering, Martin J.; Scott, Vicki; Lane, Geoffrey A.; Christensen, Michael J.; Schmid, Jan

2001-01-01

76

La señorita de Tacna o la escritura de una lectura  

E-print Network

FALL 1982 3 La señorita de Tacna o la escritura de una lectura C. Lucía Garavito Mientras que la poesía y la novelística peruanas del presente siglo han contado con exponentes que las han dado a conocer a nivel nacional e internacional, no ha... sucedido lo mismo con la dramaturgia. Se ha señalado a Collacocha de Solari Swayne como la obra que marca el surgimiento del teatro peruano de las últimas décadas.1 Desafortunadamente el esfuerzo no se ha visto continuado y los grupos experimentales y...

Garavito, Lucí a

1982-10-01

77

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

PubMed Central

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

2014-01-01

78

Análisis del sistema de costos en una empresa productora de pastas alimenticias  

Microsoft Academic Search

Los Sistemas de Costos son conjuntos de métodos, normas y procedimientos, que rigen la planificación, determinación y análisis del costo, así como el proceso de registro de los gastos de una o varias actividades productivas en una empresa, de forma interrelacionada con los subsistemas que garantizan el control de la producción y de los recursos materiales, laborales y financieros. En

Alberto Maximino Fuentes Martínez

2011-01-01

79

Contact: DR. UNA ROMAN D'ELIA Graduate Coordinator, deliau@queensu.ca  

E-print Network

Contact: DR. UNA ROMAN D'ELIA Graduate Coordinator, deliau@queensu.ca Art History M.A., Ph.D. The M century Arts in Southern and Central Europe and their Diffusion in Latin America and Asia UNA ROMAN D'ELIA

Graham, Nick

80

Indicadores internacionales de Soberanía Alimentaria. Nuevas herramientas para una nueva agricultura  

Microsoft Academic Search

La crisis alimentaria del año 2008 situó en la agenda política, una vez más, uno de los retos globales más importantes que la humanidad debe afrontar: satisfacer el derecho a la alimentación de una manera sostenible. La Soberanía Alimentaria es un concepto, propuesto y desarrollado por numerosas organizaciones campesinas, que puede contribuir al objetivo planteado. No obstante para aumentar el

Miquel Ortega-Cerdà; Marta G. Rivera-Ferre

2010-01-01

81

LA CONCEPTUALIZACIÓN DE LOS SEGMENTOS TURÍSTICOS EN ANDALUCÍA: UNA BREVE APROXIMACIÓN  

Microsoft Academic Search

Viajar ha sido siempre una de las aspiraciones más firmemente deseadas del ser humano, aunque, a lo largo de la historia de la humanidad, los desplazamientos individuales y colectivos han estado motivados por distintas causas. Además, España se sitúa entre los destinos turísticos preferidos por los turistas extranjeros, aunque muy especialmente destaca Andalucía con una amplia oferta turística. Hasta hace

Cristina Castillo Rodríguez

2011-01-01

82

II candidato/a esponga una teoria di riferimento sul tema della comunicazione illustrando  

E-print Network

TRACCIA 1 II candidato/a esponga una teoria di riferimento sul tema della comunicazione illustrando: - i lineamenti generali della teoria e gli autori più significativi - i principali costrutti e le 2 II candidato/a esponga una teoria di riferimento sul tema della motivazione illustrando: - il

Di Pillo, Gianni

83

Mirando a través de las máscaras: Una entrevista con Cristina Escofet  

E-print Network

otro lugar ni la literatura, ni la filosofía ni la vida más que del género. Las mujeres somos filosofas. ¿Ud. cree que existe un discurso femenino dramático? No creo que haya un discurso femenino en oposición a un discurso masculino. Hay una... desde dónde. Woody Allen es importante por su punto de mira - más allá de que si es hombre o mujer. Esto es el punto más importante. El hecho de que una mujer escriba no quiere decir que su discurso tenga una mirada interesante. Se puede reproducir el...

Rathbun, Jennifer

2002-10-01

84

The Small Subunit of Snapdragon Geranyl Diphosphate Synthase Modifies the Chain Length Specificity of Tobacco Geranylgeranyl Diphosphate Synthase in Planta[W  

PubMed Central

Geranyl diphosphate (GPP), the precursor of many monoterpene end products, is synthesized in plastids by a condensation of dimethylallyl diphosphate and isopentenyl diphosphate (IPP) in a reaction catalyzed by homodimeric or heterodimeric GPP synthase (GPPS). In the heterodimeric enzymes, a noncatalytic small subunit (GPPS.SSU) determines the product specificity of the catalytic large subunit, which may be either an active geranylgeranyl diphosphate synthase (GGPPS) or an inactive GGPPS-like protein. Here, we show that expression of snapdragon (Antirrhinum majus) GPPS.SSU in tobacco (Nicotiana tabacum) plants increased the total GPPS activity and monoterpene emission from leaves and flowers, indicating that the introduced catalytically inactive GPPS.SSU found endogenous large subunit partner(s) and formed an active snapdragon/tobacco GPPS in planta. Bimolecular fluorescence complementation and in vitro enzyme analysis of individual and hybrid proteins revealed that two of four GGPPS-like candidates from tobacco EST databases encode bona fide GGPPS that can interact with snapdragon GPPS.SSU and form a functional GPPS enzyme in plastids. The formation of chimeric GPPS in transgenic plants also resulted in leaf chlorosis, increased light sensitivity, and dwarfism due to decreased levels of chlorophylls, carotenoids, and gibberellins. In addition, these transgenic plants had reduced levels of sesquiterpene emission, suggesting that the export of isoprenoid intermediates from the plastids into the cytosol was decreased. These results provide genetic evidence that GPPS.SSU modifies the chain length specificity of phylogenetically distant GGPPS and can modulate IPP flux distribution between GPP and GGPP synthesis in planta. PMID:20028839

Orlova, Irina; Nagegowda, Dinesh A.; Kish, Christine M.; Gutensohn, Michael; Maeda, Hiroshi; Varbanova, Marina; Fridman, Eyal; Yamaguchi, Shinjiro; Hanada, Atsushi; Kamiya, Yuji; Krichevsky, Alexander; Citovsky, Vitaly; Pichersky, Eran; Dudareva, Natalia

2009-01-01

85

UBC Social Ecological Economic Development Studies (SEEDS) Student Report How Can We Make Our UNA Parks More Sustainable?  

E-print Network

Parks More Sustainable? UNA Hawthorn Park Demonstration Project Rebecca Colter University of British or the SEEDS Coordinator about the current status of the subject matter of a project/report". #12;Hawthorn Park Demonstrat Project Hawthorn Park Demonstrat Project How Can We Make Our UNA Parks More Sustainable? UNA

86

Para mi el teatro es un ascesis, una cura de adelgazamiento': Entrevista a Mario Vargas Llosa  

E-print Network

usted al libre tratamiento que hacen los teatristas de las piezas dramáticas. ¿ Cuál es su postura como autor respecto al tratamiento del texto por parte del director, eso que una escritora argentina llamó canibalismo amoroso? Yo considero que el...

Espinosa Domí nguez, Carlos

1986-10-01

87

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

E-print Network

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

Macilotti, Giorgia and#60;1983and#62

2012-01-01

88

GRASS 6: Una gua de inicio (GRASS 6 in a nutshell)  

E-print Network

GRASS 6: Una guía de inicio (GRASS 6 in a nutshell) por Markus Neteler (neteler at itc dot it. 25 al 29 de Julio de 2005 #12;WALC 2005 Universidad de los Andes, de Mérida ­ Colnodo GRASS 6: Una apropiado. GRASS (por su siglas en inglés, the Geographic Resources Analysis and Support System, http://grass

Neteler, Geogr. Markus - Fondazione Edmund Mach

89

Rusco aculeati-Fraxinetum angustifoliae, una nova associació forestal de ribera del territori ruscínic  

Microsoft Academic Search

Proposem una nova comunitat de ribera del territori ruscínic, dominada per Fraxinus angustifolia, que ocupa, d’una banda, la zona marginal externa de les alberedes litorals (Populetum albae), i d’altra, els petits cursos d’aigües estacionals de l’interior. Aquesta comunitat s’estableix en sòls amb marcades oscil·lacions estacionals del nivell freàtic, cosa que afavoreix precisament l a instal·lació dels freixes de fulla petita,

Josep Gesti Perich; Lluís Vilar Saís

2003-01-01

90

Simulación de la micromecánica en la solidificación de una fundición de grafito esferoidal  

Microsoft Academic Search

Este trabajo presenta una simulación computacional y resultados de la evolución de la microestructura\\u000adurante la solidificación de una fundición de grafito esferoidal, obtenidos mediante autómatas celulares. La\\u000amicroestructura se define en un elemento de volumen representativo y su evolución est´a dada por modelos\\u000ade nucleación y de crecimiento propuestos por la teoría uninodular, que se escriben aqu´? en forma

Patricia M. Dardati; Luis A. Godoy; Germán A. Cervetto; Pedro Paguaga

1970-01-01

91

La Universidad de Alicante organiza una observacin del eclipse de Luna del mircoles  

E-print Network

La Universidad de Alicante organiza una observación del eclipse de Luna del miércoles La Universidad de Alicante ha preparado una observación del eclipse total de Luna que se producirá la noche del astronómica así como su instrumental con el fin de explicar el desarrollo del eclipse. Previo a la observación

Escolano, Francisco

92

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

E-print Network

multiplicidad de perspectives Galileo Gall: La ciencia y la revolucion versus el misterio religioso y la realidad sertanera El periodista miope: El testigo ocular y la vocacion del escritor El Baron de Canabrava: El comentario, fanaticos y fracasados 39... para una representacion adecuada de esa "verdad" (traducido de White, 23-24). Pero ". . . [en] la epoca contemporanea el afan critico y cienti- fico extrae a la Historia de la Literature, la convierte en una ciencia, y la entiende desvinculada...

Loeffler, Lisa Bowe

1984-01-01

93

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

PubMed Central

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

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

2012-01-01

94

Involvement of Pinus taeda MYB1 and MYB8 in phenylpropanoid metabolism and secondary cell wall biogenesis: a comparative in planta analysis  

PubMed Central

The involvement of two R2R3-MYB genes from Pinus taeda L., PtMYB1 and PtMYB8, in phenylpropanoid metabolism and secondary cell wall biogenesis was investigated in planta. These pine MYBs were constitutively overexpressed (OE) in Picea glauca (Moench) Voss, used as a heterologous conifer expression system. Morphological, histological, chemical (lignin and soluble phenols), and transcriptional analyses, i.e. microarray and reverse transcription quantitative PCR (RT-qPCR) were used for extensive phenotyping of MYB-overexpressing spruce plantlets. Upon germination of somatic embryos, root growth was reduced in both transgenics. Enhanced lignin deposition was also a common feature but ectopic secondary cell wall deposition was more strongly associated with PtMYB8-OE. Microarray and RT-qPCR data showed that overexpression of each MYB led to an overlapping up-regulation of many genes encoding phenylpropanoid enzymes involved in lignin monomer synthesis, while misregulation of several cell wall-related genes and other MYB transcription factors was specifically associated with PtMYB8-OE. Together, the results suggest that MYB1 and MYB8 may be part of a conserved transcriptional network involved in secondary cell wall deposition in conifers. PMID:18805909

Bomal, Claude; Bedon, Frank; Caron, Sébastien; Mansfield, Shawn D.; Levasseur, Caroline; Cooke, Janice E. K.; Blais, Sylvie; Tremblay, Laurence; Morency, Marie-Josée; Pavy, Nathalie; Grima-Pettenati, Jacqueline; Séguin, Armand; MacKay, John

2008-01-01

95

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

PubMed

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

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

96

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

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

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

2013-01-01

97

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

PubMed

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

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

2013-08-01

98

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

PubMed Central

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

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

99

Regiones de formación de la línea de He II ? 1640 en una atmósfera en expansión  

NASA Astrophysics Data System (ADS)

Se calculan perfiles de la línea del He II ?1640 empleando un modelo de atmósfera en expansión con una estructura cromosférica para determinar la región de formación de la línea. El problema se trata en geometría esférica, fuera de equilibrio termodinámico. La ecuación de transporte radiativo se resuelve rigurosamente en el marco de referencia del fluído para distintas leyes de velocidad, monótonamente crecientes, y diferentes leyes de temperatura. Se buscan relaciones globales entre las características del perfil y los parámetros físicos atribuídos a la atmósfera estelar, con la finalidad de definir una herramienta de diagnóstico de las propiedades del medio.

Venero, R.; Cidale, L.; Ringuelet, A.

100

Víctimas y victimarios: Cómplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti  

E-print Network

FALL 1989 37 Víctimas y victimarios: Cómplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti Roberto Previdi Froelich ... porque nunca podemos odiar a las personas que sabemos son capaces de hacer exactamente... en los lados ocultos que encarnan la sutil naturaleza de la ideología burguesa en su discurso del poder. Si bien presenciamos una evidente ruptura con una construcción tradicional del realismo teatral,1 el teatro de Monti, a través de sus...

Previdi Froelich, Roberto

1989-10-01

101

rea de Biomecnica del Deporte Rendimiento Deportivo 209 DESARROLLO DE UNA "TOOLBOX" DE TRATAMIENTO  

E-print Network

Área de Biomecánica del Deporte ­ Rendimiento Deportivo 209 DESARROLLO DE UNA "TOOLBOX" DE_mail: kgiannik@unex.es Pantrigo, J.J. Vara Gazapo, A. Galapero, L. Facultad de Ciencias del Deporte. Universidad DE CIENCIAS DEL DEPORTE "corrompe" la señal obtenida. Así que, el procesamiento digital de señales se

Pantrigo Fernández, Juan José

102

FUNDAMENTACIN El yoga es una disciplina tradicional originaria de India, que busca el equilibrio y el  

E-print Network

YOGA FUNDAMENTACI�N El yoga es una disciplina tradicional originaria de India, que busca el fundamental del yoga es que todo practicante debería evolucionar mediante el desarrollo de la autodisciplina psicológica y la necesidad espiritual. El yoga cuenta con varias técnicas y estilos, que se adaptan a todo

Escolano, Francisco

103

La Drosophila de las alas manchadas Una nueva plaga invasora en los frutales de Michigan  

E-print Network

La Drosophila de las alas manchadas Una nueva plaga invasora en los frutales de Michigan Rufus Bulletin E-3140SP New · November 2010 Introducción La mosca Drosophila de alas manchadas (Drosophila mayoría de las moscas del vinagre atacan cuando la fruta esta dañada. A diferencia de estas, la Drosophila

104

NUOVO DISEGNO DI UNA PROTESI TRANS-TIBIALE IN MATERIALE COMPOSITO  

Microsoft Academic Search

Sommario In questo lavoro è descritta la procedura speriment ale utilizzata per verificare la tenuta strutturale di protesi di arti inferiori in materiale composito a fibra di carbonio secondo la norma ISO 10328. Due tipi di protesi sono state sperimentalmente verific ate attraverso attrezzature appositamente progettat e per prove sperimentali statiche e di fatica: una pe r camminare costituita da

C. Colombo; B. Mangiante; F. Ricotti

105

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

E-print Network

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

Bravo-Elizondo, Pedro

1996-10-01

106

Subsidios a la producción y delegación de la política comercial en una unión aduanera  

Microsoft Academic Search

Partiendo de un modelo de dumping recíproco en el que existen tres países, se justifica que los acuerdos de comercio preferencial entre países pueden surgir como una respuesta estratégica a los subsidios a las exportaciones por parte de un tercer país. Al mismo tiempo, se estudian los efectos sobre el bienestar derivados de la delegación de la política comercial en

José Méndez Naya

107

Una evaluación del Plan de Consolidación Integral de la Macarena (PCIM)  

Microsoft Academic Search

Este artículo presenta una descripción de la nueva estrategia de la lucha contra las drogas implementada en Colombia desde el año 2007. El Salto Estratégico, como ha llamado el gobierno colombiano a este programa, o la Iniciativa de Desarrollo Estratégico, como lo llama USAID (la agencia del gobierno de Estados Unidos para la ayuda a los países en desarrollo) es

Daniel Mejía; María José Uribe; Ana María Ibáñez

2011-01-01

108

Agroecología y Decrecimiento. Una alternativa sostenible a la configuración del actual sistema agroalimentario español  

Microsoft Academic Search

La manera en que se satisface el metabolismo endosomático de los ciudadanos no figura como una de las actuaciones prioritarias en los programas de decrecimiento sostenible. Ello se debe a la identificación que se hace de dicho metabolismo con las actividades agrarias y su reducido impacto sobre el consumo total de energía. Sin embargo, si se va más allá de

Manuel González de Molina; Juan Infante Amate

2010-01-01

109

La ecología y el desarrollo sostenible frente al capitalismo: una contradicción insuperable  

Microsoft Academic Search

Resumen El progresivo deterioro ambiental y la creciente destrucción de los recursos naturales a escala planetaria constituyen una clara evidencia de lo que es capaz de generar un modelo basado exclusivamente en el crecimiento económico y la obtención de beneficios inmediatos, pero también son un signo elocuente de los propios límites que presenta el capitalismo, pues este modo de producción

José Antonio Segrelles

110

Su una teoria generale della misura ( r ? 1)-dimensionale in uno spazio ad r dimensioni  

Microsoft Academic Search

Sunto  In questo lavoro do una definizione della misura (r ? 1)-dimensionale della frontiera orientata di un insieme diBorel contenuto in uno spazio euclideo ad r dimensioni e dimostro alcune fra le pi notevoli propriet di tale misura.

Ennio De Giorgi

1954-01-01

111

Caso de estudio: Análisis de oxímetros de pulso de una sala de neonatología  

Microsoft Academic Search

Resumen— La oximetría de pulso es usada para monitorear la saturación de oxígeno en distintas patologías y aplicaciones. Una patología que requiere un seguimiento de los valores de este parámetro fisiológico, de forma continua y precisa es la retinopatía del prematuro (ROP). Además el oxímetro de pulso ofrece la gran ventaja de tratarse de un monitor no invasivo. De allí

Juan Salerno; Graciela Salum; Edgardo Marino

112

Batkoa apiculata (Thaxter) Humber affecting Anopheles (Diptera: Culicidae) in the municipality of Una, Southern Bahia, Brazil  

Technology Transfer Automated Retrieval System (TEKTRAN)

Surveys for fungal pathogens affecting adult mosquitoes from the genus Anopheles were conducted in flooded and swamp-like natural breeding sites near residences in the center and suburbs of the city of Una as well as the nearby village of Outeiro in southern Bahia. Surveys of 54 mosquito breeding si...

113

Examen del estado Mini-Mental: propuesta de una normativa para su aplicación  

Microsoft Academic Search

Resumen. El examen del estado Mini-Mental (EEMM) es actualmente una de las herramientas más influyentes en la valoración y búsqueda de alteraciones cognitivas, aun a pesar de determinados interrogantes con respecto a su validez. Aunque se ha generalizado la utilización informal de varias traducciones del EEMM en lengua castellana, al no haberse validado éstas ni estar apenas especificada su aplicación

S. Giménez-Roldán; M. J. Novillo; E. Navarro; J. L. Dobato; M. Giménez-Zuccarelli

114

Competencia entre estímulos condicionales propioceptivos y exteroceptivos en una tarea de discriminación condicional  

Microsoft Academic Search

Se realizó un experimento con sujetos humanos de edades comprendidas entre los 7 y los 53 años en el que se utilizó un procedimiento de discriminación condicional con muestras compuestas formadas por estímulos exteroceptivos (figuras geométricas coloreadas) y propioceptivos (diferentes formas de señalar tales figuras). De esta forma, los sujetos fueron entrenados a emitir una conducta diferencial ante cada muestra

María Teresa Rodríguez García; Andrés García García; María Teresa; Gutiérrez Domínguez; Vicente Pérez Fernández; Cristóbal Bohórquez Zayas

2009-01-01

115

Aparición de resistencia a herbicidas, en una población de malezas  

NSDL National Science Digital Library

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

116

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

E-print Network

, Vargas Llosa ha presentado diversos aspectos de la realidad peruana, logrando una vision en profundi dad del hombre y la sociedad que puede tener validez para toda America Latina Su segunda gran novels, La Casa Verde, publicada en 1966, consolido el...

Frick, Magdalena Capurro

1976-01-01

117

Acta Cientfica Venezolana, 53: 94118, 2002 UNA PRESENTACION UNIFORME DE LA TEORIA DESCRIPTIVA  

E-print Network

DESCRIPTIVA DE LA COMPLEJIDAD COMPUTACIONAL Argimiro Arratia Departamento de Matemáticas Universidad Simón/06/02 RESUMEN: La Teoría Descriptiva de la Complejidad Computacional estudia la Complejidad Computacional desde a su desarrollo histórico, por lo que, para cada clase de complejidad computacional, se realiza una

Arratia, Argimiro A.

118

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

PubMed

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

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

2014-10-01

119

XerR, a negative regulator of XccR in Xanthomonas campestris pv. campestris, relieves its repressor function in planta  

PubMed Central

We previously reported that XccR, a LuxR-type regulator of Xanthomonas campestris pv. campestris (Xcc), activates the downstream proline iminopeptidase virulence gene (pip) in response to certain host plant factor(s). In this report, we further show that the expression of the xccR gene was repressed in the culture medium by an NtrC-type response regulator, which we named XerR (XccR expression-related, repressor), and that this repression was relieved when the bacteria were grown in planta. Such a regulatory mechanism is reinforced by the observations that XerR directly bound to the xccR promoter in vitro, and that mutations at the phosphorylation-related residues of XerR resulted in the loss of its repressor function. Furthermore, the expression level of xccR increased even in XerR-overexpressing Xcc cells when they were vacuum infiltrated into cabbage plants. We also preliminarily characterized the host factor(s) involved in the above mentioned interactions between Xcc and the host plant, showing that a plant material(s) with molecular weight(s) less than 1 kDa abolished the binding of XerR to the xccR promoter, while the same material enhanced the binding of XccR to the luxXc box in the pip promoter. Taken together, our results implicate XerR in a new layer of the regulatory mechanism controlling the expression of the virulence-related xccR/pip locus and provide clues to the identification of plant signal molecules that interact with XerR and XccR to enhance the virulence of Xcc. PMID:21483448

Wang, Li; Zhang, Lili; Geng, Yunfeng; Xi, Wei; Fang, Rongxiang; Jia, Yantao

2011-01-01

120

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

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

Schiml, Simon; Fauser, Friedrich; Puchta, Holger

2014-12-01

121

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

PubMed

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

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

122

In Planta Assessment of the Role of Thioredoxin h Proteins in the Regulation of S-Locus Receptor Kinase Signaling in Transgenic Arabidopsis1[W][OPEN  

PubMed Central

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

Yamamoto, Masaya; Nasrallah, June B.

2013-01-01

123

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

PubMed

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

Yamamoto, Masaya; Nasrallah, June B

2013-11-01

124

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

PubMed Central

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

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

2009-01-01

125

La utilización de instrumentos de medida en situaciones de contacto de lenguas y de culturas: una reflexión metodológica  

Microsoft Academic Search

En el contexto europeo en el que vivimos, las situaciones de contacto de lenguasy de contacto de culturas, más que una excepción, son la norma, lo habitual. Es más, la propia historia de la Europa que conocemos es una historia de contacto, de intercambio y, en definitiva, de interacción continua entre distintas lenguas y culturas. Lo extraño o lo poco

Xabier Isasi Balanzategi; Nekane Balluerka Lasa; Arantxa Gorostiaga Manterola

2000-01-01

126

EL PROGRAMA CITI: UNA ALTERNATIVA PARA LA CAPACITACIÓN EN ÉTICA DE LA INVESTIGACIÓN EN AMÉRICA LATINA  

PubMed Central

El Programa CITI (Collaborative Institutional Training Initiative) es un curso basado en Internet y desarrollado por voluntarios, que brinda material educacional sobre protección de sujetos humanos en investigaciones biomédicas y de conducta, buenas prácticas clínicas, conducta responsable de la investigación y trato humanitario a animales de laboratorio. Es un esfuerzo conjunto del Fred Hutchinson Cancer Research Center y la Universidad de Miami. Con la colaboración de expertos locales, gran parte del contenido se ha adaptado para América Latina, se ha traducido al español y portugués y se han establecido acuerdos de colaboración con instituciones especializadas en bioética en Chile, Brasil, Costa Rica y Perú. Los autores presentan una metodología accesible para la capacitación en ética de la investigación y una justificación de su uso y difusión en América Latina PMID:21687817

Litewka, Sergio; Goodman, Kenneth; Braunschweiger, y Paul

2011-01-01

127

Kingdom Plantae Douglas firs (left);  

E-print Network

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-living and photosynthetic #12;5 Clockwise from upper left: a fern; a club moss; a whisk fern; a horsetail Fern Life Cycle

Brown, Christopher A.

128

GRASS 6: Una gua de inicio GRASS 6 in a nutshell  

E-print Network

GRASS 6: Una guía de inicio - GRASS 6 in a nutshell Por Markus Neteler (neteler at itc dot it:00 Título : Open Source Geoinformatics with GRASS GIS Ponentes: Markus Neteler, Kristen Perry Traducido al actualizado a la versión 6.3 de GRASS por Carlos Dávila (carluti at users dot sourceforge dot net) c 2004

Neteler, Geogr. Markus - Fondazione Edmund Mach

129

AMRICA LATINA. PORTAL EUROPEO Una herramienta colectiva al servicio del americanismo europeo  

E-print Network

Consejo Europeo de Investigaciones Sociales de América Latina (CEISAL). Este seminario científico titulado continente y todas las asignaturas en Humanidades y Ciencias Sociales estaban representadas. Este seminario, a disposición de la comunidad científica a través una página Web común a las dos redes involucradas en este

Paris-Sud XI, Université de

130

El doctor Varmus dirigirá una institución "inigualable", afirma el director del NCI, doctor John Niederhuber  

Cancer.gov

En un mensaje dirigido al personal del Instituto Nacional del Cáncer (NCI) y a quienes se interesan por la oncología, el doctor John Niederhuber, director del NCI, aplaude el nombramiento de Harold Varmus y afirma que esta designación le "dará al NCI un liderazgo fuerte no solo en la institución sino mas allá de ella, así como una voz muy respetada en el Congreso, que abogue por los recursos que son tan necesarios para sostener la misión del Instituto.

131

Computacion de Altas Prestaciones, una herramienta en ayuda de la ciencia  

E-print Network

Computaci´on de Altas Prestaciones, una herramienta en ayuda de la ciencia Domingo Gim´enez http://dis.um.es/~domingo Departamento de Inform´atica y Sistemas Grupo de Computaci´on Cient´ifica y Programaci´on Paralela http://luna.inf.um.es/grupo investigacion San Alberto, 14 noviembre 2014 Computaci´on de Altas Prestaciones San Alberto, 14-11-2014 1 / 50

Giménez, Domingo

132

Teoria de Ecuaciones Diferenciales (29 de junio de 2004) (a) Escribe el problema de valor inicial que modela el movimiento de una cuerda vibrante infinita.  

E-print Network

Teor´ia de Ecuaciones Diferenciales (29 de junio de 2004) (a) Escribe el problema de valor inicial que modela el movimiento de una cuerda vibrante infinita. (b) Escribe la ecuaci´on de Laplace en una inicial que modela el movimiento de una cuerda vibrante infinita es: utt - c2 uxx = 0 x R t R u(x, 0

Ramírez-Ros, Rafael

133

[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

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

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

134

Intorno ad un teorema di Hodge sulla teoria della base per le curve di una superficie algebrica  

Microsoft Academic Search

Sunto  Si dimostra, con procedimento algebrico-geometrico assai semplice, un teorema diHodge sulla teoria della base per le curve tracciate sopra una superficie algebrica; da questo si traggono poi varie conseguenze,\\u000a concernenti i gradi virtuali delle curve di una superficie algebrica o delle corrispondenze fra due curve algebriche, il principio\\u000a di degenerazione diEnriques, e la teoria diSeveri delle corrispondenze fra due superficie

Beniamino Segre

1937-01-01

135

TAgentsP y PDP: propuestas para una plataforma de agentes en computacion ubicua  

Microsoft Academic Search

ser, presenta entornos saturados de dispositivos con capaci-dades de computaci'on y comunicaci'on que le proporcionan a los usuarios servicios ocultando la complejidad tecnol'ogi-ca subyacente. Nuestra l'inea de investigaci'on pretende po-tenciar el uso de la tecnolog'ia de agentes m'oviles en com-putaci'on ubicua para facilitar este objetivo. El trabajo que aqu'i presentamos se centra por un lado en proporcionar una plataforma de

Ma Celeste; Campo Vazquez; Carlos Garc; Florina Almenares; Mendoza Andres; Mar ´ in Lopez

136

C A L I F O R N I A E N V I R O N M E N T A L P R O T E C T I O N A G E N C Y Boletn de Prensa  

E-print Network

industriales, así como la operación y el mantenimiento de una planta de tratamiento de aguas residuales y el, para 38 operadores, ingenieros y reguladores de plantas de tratamiento de aguas residuales de México plantas de tratamiento de aguas residuales. El curso incluyó temas tales como una revisión general de las

137

El Instituto Nacional del Cáncer de EE. UU. y la República del Perú firman una Declaración de Intención  

Cancer.gov

El Instituto Nacional del Cáncer y la República del Perú firmaron una declaración de intención para compartir el interés en fomentar la investigación biomédica de oncología, basándose en la colaboración mutua de ambas entidades, así como el objetivo común de educar y capacitar la futura generación de científicos y clínicos en investigación oncológica.

138

Resumen--El problema del Max-Cut consiste en encontrar una particin de los vrtices de un grafo  

E-print Network

] introdujeron un método denominado CirCut, también basado en una relajación del problema. CirCut mejora a todos utilizar tiempos de cómputo mucho más elevados. En este trabajo, se han considerado ambos métodos (CirCut y

Duarte, Abraham

139

Una economía de frontera con el norte Europeo: El desarrollo de Cataluña en los siglos XVIII al XX  

Microsoft Academic Search

El presente ensayo pretende evaluar la contribución que haya podido suponer la condición de territorio de frontera a las particularidades del proceso de desarrollo económico de Cataluña desde el siglo XVIII en adelante. En su mismo nacimiento como espacio político y administrativo diferenciado y con soberanía sobre el territorio, Cataluña fue una frontera o límite: la “Marca Hispánica” que el

Jordi Maluquer de Motes i Bernet

2001-01-01

140

ERASMUS STAFF INTERNATIONAL WEEKS 13-14 A modo divulgativo anunciamos diferentes International Weeks para solicitar una movilidad  

E-print Network

Weeks para solicitar una movilidad Erasmus PDI + PAS para impartir docencia o recibir formación solicitud: 15 de marzo de 2014 Información Contacto: staff.week@uni-kassel.de FRANCIA (MOVILIDAD PROFESORES.study-in-champagne.com ALEMANIA (MOVILIDAD PROFESORES) Westfälische Hochschule Del 5 al 8 de Mayo de 2014 Invitación Programa

Rey Juan Carlos, Universidad

141

Glen Biotech SL, empresa del Parque Cientfico de Alicante, obtiene una ayuda CDTI para su proyecto de I+D  

E-print Network

Glen Biotech SL, empresa del Parque Científico de Alicante, obtiene una ayuda CDTI para su proyecto de I+D Alicante, 6 de julio de 2011 GLEN BIOTECH SL, empresa de base tecnológica (EBT) del Parque a 400.000 . Glen Biotech SL es la primera EBT de la Universidad de Alicante (UA) y ha sido creada

Escolano, Francisco

142

PT0100 DEBAT UNIVERSITARI PT0100 Descripci: s una iniciativa que pretn dos objectius: acostar a la  

E-print Network

PT0100 DEBAT UNIVERSITARI PT0100 Descripció: �s una iniciativa que pretén dos objectius: acostar ASSIGNATURES: (consultau-ne els subprogrames) PT0110 TALLER D'EXPRESSI� ORAL I CORPORAL: MILLORA LES TEVES COMPUTABLE A LES ASSIGNATURES: (consultau-ne els subprogrames) PT0120 LLIGA DE DEBAT UNIVERSITARI DE LA XARXA

Oro, Daniel

143

Bases para un desarrollo ganadero sostenible: la consideración de la producción animal desde una perspectiva sistémica y el estudio de la diversidad de las explotaciones  

Microsoft Academic Search

1. INTRODUCCIÓN La consideración de los sistemas de producción animal desde una perspectiva puramente económica y mecanicista, basada en rela- ciones causa-efecto, ha conducido en numerosas ocasiones a una falta de coordinación entre los distintos agentes implicados en la mejora de los sistemas de producción y el contexto socioeconómi- co. Esta circunstancia se ha traducido, por un lado, en que

EMMA SERRANO MARTÍNEZ; ÁNGEL RUIZ MANTECÓN

2003-01-01

144

La Meccanica Quantistica e una teoria completa? e quale relazione ha con la Teoria della Relativita? certo sono di#cilmente compatibili come testimoniano i  

E-print Network

Prefazione La Meccanica Quantistica â??e una teoria completa? e quale relazione ha con la Teoria alternativi di fonderle e il grandioso tentativo in atto di formulare una teoria delle stringhe. Questi sono Quantica: non tocca la teoria quantistica dei campi che ha raggiunto il massimo sviluppo dopo gli anni '30

Roma "La Sapienza", Università di

145

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

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

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

146

AJAX: Proposta di esercizio... Create esAjax3.html/php: inserite una serie di link  

E-print Network

1 AJAX: Proposta di esercizio... Create esAjax3.html/php: inserite una serie di link cliccando i [potete partire da esAjax1.html e modificarlo] P gg p p j crema idratante giorno ­ 19.90 acquista crema crema idratante giorno, 19.90 Soluzione: prima versione I I VERSIONE, semplificata (senza DB) esAjax3_v1

Goy, Anna

147

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 Parasitism.  

PubMed

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

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

2015-01-01

148

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

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

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

2015-01-01

149

Glen Biotech SL, empresa del Parc Cientfic d'Alacant, obt una ajuda CDTI per al seu projecte de R+D  

E-print Network

Glen Biotech SL, empresa del Parc Científic d'Alacant, obté una ajuda CDTI per al seu projecte de R+D Alacant, 6 de juliol de 2011 GLEN BIOTECH SL, empresa de base tecnològica (EBT) del Parc Científic d Desenvolupament Tecnològic Industrial (CDTI), una ajuda de 400.000 . Glen Biotech SL és la primera EBT de la

Escolano, Francisco

150

Plantae: Fossil Record and First Appearances  

NSDL National Science Digital Library

This University of California Berkeley Museum of Paleontology site provides an interactive geologic timescale that illustrates the temporal distribution of several important plant groups. First appearances of major plant groups are plotted on a colorful timescale and each group is linked to references, text, images, and further information. Key Cretaceous plant groups featured include Anthocerotophyta, Anthophyta and Gnetales. The site might be a useful resource for constructing introductory level lectures concerned with paleobotany and paleoecology of the Cretaceous Period.

Brian, Speer; Paleontology, University O.

151

In planta transformation of Arabidopsis thaliana  

Microsoft Academic Search

Transformants of Arabidopsis thaliana can be generated without using tissue culture techniques by cutting primary and secondary inflorescence shoots at their bases and inoculating the wound sites with Agrobacterium tumefaciens suspensions. After three successive inoculations, treated plants are grown to maturity, harvested and the progeny screened for transformants on a selective medium. We have investigated the reproducibility and the overall

Vesna Katavic; George W. Haughn; Darwin Reed; Marilyn Martin; Ljerka Kunst

1994-01-01

152

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

E-print Network

1 Diversity ethics. An alternative to Peter Singer's ethics1 Ã?ticas de la diversidad. Una theories, as another human diversity, provides an extended ethical approach: diversity ethics. This general logics, self-respect and auto-recognition. Diversity ethics provides sound foundations to defend justice

Paris-Sud XI, Université de

153

Tutores/as Acadmicos/as de Movilidad El Vicedecanato de Relaciones Internacionales y Movilidad (VRIM) cuenta con una red de tutores/as de movilidad  

E-print Network

Tutores/as Académicos/as de Movilidad El Vicedecanato de Relaciones Internacionales y Movilidad (VRIM) cuenta con una red de tutores/as de movilidad cuyas funciones son: Asesorar a los/as estudiantes (tanto propios como acogidos) en la elección de asignaturas que cursarán durante su periodo de movilidad

Escolano, Francisco

154

Olimpiadas de Ciencias Las Olimpiadas de Ciencias son unas competiciones de carcter intelectual dirigidas al alumnado de 1 y 2 de  

E-print Network

Olimpiadas de Ciencias Las Olimpiadas de Ciencias son unas competiciones de carácter intelectual, e internacional. Sus objetivos son: Estimular el estudio de las ciencias entre los/las jóvenes y relación entre los centros de educación secundaria y la Universidad. La Facultad de Ciencias organiza las

Escolano, Francisco

155

Preconceptos sobre el odontólogo y la consulta odontológica por parte de niños de séptimo grado en una institución rural en el estado Trujillo, Venezuela  

Microsoft Academic Search

RESUMEN El rol del odontólogo en la prevención, educación y cuidados para la rehabilitación del sistema estoma- tognático es de notable importancia para la salud del individuo. Sin embargo, no existe una adecuada difu- sión sobre el rol del odontólogo. Por lo tanto, es de esperar que existan preconceptos erróneos en los niños acerca de este profesional y sus funciones,

TRABAJO DE INVESTIGACIÓN

156

La grande passione di Pierre de Fermat -nato nel 1601 in una cittadina della Linguadoca non lontano da Tolosa, di professione magistrato, stimato  

E-print Network

La grande passione di Pierre de Fermat - nato nel 1601 in una cittadina della Linguadoca non'Arithmetica del grande matematico di Alessandria ­ Fermat asserì che non è possibile «scomporre un cubo in due problema di teoria dei numeri ­ noto come ultimo teorema di Fermat - che il «tolosano» ha lasciato

Bartocci, Claudio

157

Modelos teóricos que nos ayudan a comprender el gobierno de las sociedades cooperativas, una apuesta por el enfoque de los stakeholders  

Microsoft Academic Search

En la actualidad, el entorno competitivo es cada vez más incierto y complejo. Las características de los mercados actuales hacen que sea cada vez más difícil conseguir una ventaja competitiva sostenible en el tiempo para la empresa, por lo que hay que innovar en formas de gestión y de gobierno para ser competitivo. De esta manera, se está produciendo un

Cristina Pedrosa Ortega

2009-01-01

158

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

Cancer.gov

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

159

PRODUCCIN DE PLANTAS EN VIVEROS FORESTALES Produccin de plantas grandes usando  

E-print Network

por la producción híbrida o mixta. La misma consiste en cul- tivar plantines en contenedores de prácticas cul- turales habituales de ese tipo de producción. Desarro- llados a principios de la década de

160

-REDES Y TELECOMUNICACIONES PARA PASES EN DESARROLLO No es previsible que sea necesaria una adaptacin de alumnos del Mster Oficial en  

E-print Network

- REDES Y TELECOMUNICACIONES PARA PAÍSES EN DESARROLLO No es previsible que sea necesaria una adaptación de alumnos del Máster Oficial en Redes de Telecomunicación para Países en Desarrollo hacia el nuevo título de Máster Universitario en Redes de Telecomunicación para Países en Desarrollo. Las razones

Rey Juan Carlos, Universidad

161

Seminario "Divulgacin de conocimientos en ciencias de la nutricin" DESTINADO A: Se trata de una actividad enfocada a todos los estudiantes del Grado  

E-print Network

Seminario "Divulgación de conocimientos en ciencias de la nutrición" DESTINADO A: Se trata de una a cualquier estudiante y profesional de ciencias de la salud, hasta completar aforo. FECHA y HORA: martes 17 de diciembre de 2013, de 16:00 a 18:00. LUGAR: Salón de grados de la Facultad de Ciencias de la Salud

Escolano, Francisco

162

Son decenas y estn por toda Amrica Latina. Tienen en comn su amor por la ciencia y una curiosidad del tamao  

E-print Network

Son decenas y están por toda América Latina. Tienen en común su amor por la ciencia y una la Red Inter-Americana de Academias de Ciencias (IANAS, por sus siglas en inglés), la Unesco, la ONU mujeres que lideran la ciencia en América Latina Margarita Rodríguez BBC Mundo Miércoles, 16 de octubre de

Barbosa, Marcia C. B.

163

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

Microsoft Academic Search

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

Gabriel Mercadal i Corominas; Josep Gesti Perich; Lluís Vilar

2008-01-01

164

Seismicity in 2010 and major earthquakes recorded and located in Costa Rica from 1983 until 2012, by the local OVSICORI-UNA seismic network  

NASA Astrophysics Data System (ADS)

This work is the result of the analysis of existing information in the earthquake database of the Observatorio Sismológico y Vulcanológico de Costa Rica, Universidad Nacional (OVSICORI-UNA), and seeks disclosure of basic seismological information recorded and processed in 2010. In this year there was a transition between the software used to record, store and locate earthquakes. During the first three months of 2010, we used Earthworm (http://folkworm.ceri.memphis.edu/ew-doc), SEISAN (Haskov y Ottemoller, 1999) and Hypocenter (Lienert y Haskov, 1995) to capture, store and locate the earthquakes, respectively; in April 2010, ANTELOPE (http://www.brtt.com/software.html) start to be used for recording and storing and GENLOC (Fan at al, 2006) and LOCSAT (Bratt and Bache 1988), to locate earthquakes. GENLOC was used for local events and LOCSAT for regional and distant earthquakes. The local earthquakes were located using the 1D velocity model of Quintero and Kissling (2001) and for regional and distant earthquakes IASPEI91 (Kennett and Engdahl, 1991) was used. All the events for 2010 and shown in this work were rechecked by the authors. We located 3903 earthquakes in and around Costa Rica and 746 regional and distant seismic events were recorded (see Figure 1). In this work we also give a summary of major earthquakes recorded and located by OVSICORI-UNA network between 1983 and 2012. Seismicity recorded by OVSICORI-UNA network in 2010

Ronnie, Q.; Segura, J.; Burgoa, B.; Jimenez, W.; McNally, K. C.

2013-05-01

165

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

E-print Network

ascenso en las encuestas fue atribuido al internet y en particular al uso de redes sociales, las cuales se Manizales. Se trata de una investigación enmarcada en el planteamiento de los sistemas sociales de Niklas

Paris-Sud XI, Université de

166

Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Programas de Proteccin Contra Incendios Forestales: Una Visin Global Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Progra  

E-print Network

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

Standiford, Richard B.

167

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

E-print Network

-84-92755-88-2 #12;ÁREA DE RELACIONES INTERNACIONALES Y COOPERACI�N 1318 MOVILIDAD INTRARREGIONAL EN AM�RICA LATINA movilidad intrarregional de América Latina. La movilidad supone una constante en la región. El contexto que dificulta su asociación a una clara movilidad sur-sur, sur ­ norte, norte-sur. Introducción

Boyer, Edmond

168

Review of antiviral and immunomodulating properties of plants of the Peruvian rainforest with a particular emphasis on Una de Gato and Sangre de Grado.  

PubMed

Viral diseases, including emerging and chronic viruses, are an increasing worldwide health concern. As a consequence, the discovery of new antiviral agents from plants has assumed more urgency than in the past. A number of native Amazonian medicines of plant origin are known to have antimicrobial and anti-inflammatory activity, although only a few have been studied for their antiviral properties and immunomodulating effects. Those most studied include: Sangre de Grado (drago) (Croton lechleri) in the Euphorbiaceae family and Una de Gato (Uncaria tomentosa) in the Rubiaceae family. This article reviews the chemical composition, pharmacological properties, state of current research, clinical use, and potential antiviral and immunomodulating activity of these and other plants from the Peruvian Amazon. PMID:11804547

Williams, J E

2001-12-01

169

Ecology & Management Effect of Simulated Browsing on Aspen Regeneration: Implications for Restoration  

E-print Network

of California, Davis, CA 95616, USA. Abstract Aspen (Populus tremuloides Michx.) is a disturbance season. Resumen Alamo (Populus tremuloides Michx.) es una planta que depende del disturbio, es resistente, grazing, intensity, Populus tremuloides Mi

Tate, Kenneth

170

Personalidad, psicopatología y rendimiento neuropsicológico de los consumidores rituales de ayahuasca.  

E-print Network

??La ayahuasca es una decocción psicoactiva de origen amazónico elaborada con plantas que contienen el agonista de los receptores serotoninérgicos 5-HT2A N,N-dimetiltriptamina (DMT) y alcaloides… (more)

Bouso Saiz, José Carlos

2012-01-01

171

Estudio epidemiológico de sucesos traumáticos, trastorno de estrés post-traumático y otros trastornos psiquiátricos en una muestra representativa de Chile  

PubMed Central

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

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

2010-01-01

172

Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Programas de Proteccin Contra Incendios Forestales: Una Visin Global Memorias del Segundo Simposio Internacional Sobre Polticas, Planificacin y Economa de los Progra  

E-print Network

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

Standiford, Richard B.

173

La preparacion en ciencia de los candidatos a maestros del nivel elemental primario segun la reforma de la educacion cientifica en Puerto Rico: Una propuesta de secuencia curricular  

NASA Astrophysics Data System (ADS)

El proposito de esta investigacion fue identificar los componentes de la preparacion en ciencia que deben recibir los estudiantes del Bachillerato en Artes en Educacion Elemental, Nivel Primario, de acuerdo a los documentos que dirigen la reforma de la educacion cientifica en Puerto Rico. Tambien, se identificaron los componentes de los cursos que forman parte de la preparacion en ciencia de estos estudiantes. Se compararon los componentes de la preparacion en ciencia y los componentes de los cursos para determinar congruencias y discrepancias. Con los datos recopilados se identificaron los componentes de los cursos de una secuencia curricular para la preparacion en ciencia de los candidatos a maestros del nivel elemental primario. La secuencia curricular que se propone en esta investigacion incluye cursos de contenido cientifico y de metodologia en la ensenanza de la ciencia disenados para satisfacer las necesidades de los candidatos. Se recomienda que en los procesos para el diseno, la implantacion y la evaluacion de estos cursos participen profesores de ciencia, profesores de educacion y maestros del nivel elemental primario. Todos los cursos de la secuencia curricular deben tener un enfoque constructivista. Las experiencias educativas que se incluyan en los cursos deben aspirar a desarrollar en los candidatos los atributos de la cultura cientifica y actitudes positivas hacia la ciencia y hacia la ensenanza de esta disciplina. El modelaje por parte de los profesores que ensenen los cursos de la secuencia curricular es fundamental en el desarrollo profesional de los candidatos. Se recomienda que en los cursos de contenido cientifico se estudien los conceptos y los conocimientos cientificos que forman parte del curriculo de Kindergarten a tercer grado de forma integrada y con una profundidad universitaria. Estos cursos deben tener un enfoque interdisciplinario e incluir el estudio de la naturaleza de la ciencia y un componente de laboratorio para desarrollar los procesos de la ciencia y las destrezas de la investigacion cientifica. En los cursos de metodologia en la ensenanza de la ciencia se deben estudiar los modelos, los metodos, las estrategias y las tecnicas mas efectivas para la ensenanza y el aprendizaje de la ciencia, asi como las tecnicas de avaluacion.

Rodriguez Plaza, Evelyn

174

Population dynamics of Aceria guerreronis (Acari: Eriophyidae) and other mites associated with coconut fruits in Una, state of Bahia, northeastern Brazil.  

PubMed

Aceria guerreronis Keifer is a major coconut pest in the Americas, Africa and some Asian countries, and occurs in high population levels in northeastern Brazil. The determination of the climatic conditions that favorably affect its population growth and the prevalence and abundance of predatory mites can promote more efficient control practices. Our objective was to evaluate the pattern of occurrence and population dynamics of A. guerreronis, their associated predators and other mites during a 2 year period in a hybrid coconut plantation in the municipality of Una, state of Bahia, northeastern Brazil. Monthly samples of fruits were taken from June 2008 to May 2010 for qualitative and quantitative evaluation of mites. Aceria guerreronis represented 99.9 % of the mites. An average density of 1,117 mites per fruit and a maximum of 23,596 mites per fruit indicated that the level of infestation can be high in Bahia. Bdella ueckermanni Hernandes, Daud and Feres was the most abundant and frequent predator. Population increase of A. guerreronis was directly related to the temperature rise and inversely related to both the increase of air relative humidity and rainfall. The highest population densities occurred from November to March. The largest A. guerreronis populations occurred in fruits with 32 and 48 % of damaged surface. The relationship between prevailing wind direction and incidence of A. guerreronis could not be corroborated or refuted. PMID:22669276

de Souza, Izabel V; Gondim, Manoel G C; Ramos, Ana Luisa R; dos Santos, Emerson A; Ferraz, Marcelo I F; Oliveira, Anibal R

2012-11-01

175

PS-GRADUAO EM BIOLOGIA DE FUNGOS, ALGAS E PLANTAS  

E-print Network

identificação, sendo Carteira de identidade e CPF (original e fotocópia, ou fotocópia autenticada em cartório de Botânica Campus Universitário ­ Trindade - Florianópolis-SC-Brasil Cx. Postal 476 - CEP 88040

Floeter, Sergio Ricardo

176

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 ...

177

Short communication Phylogeny of Calvin cycle enzymes supports Plantae monophyly  

E-print Network

, it is well known that some CC enzymes in land plants and red algae have a non-cyanobacterial origin (Martin and glaucophyte algae. In green algae (and land plants) the RuBisCO large subunit is encoded in the plastid gen phylogenetic analyses suggest that land plants (Martin and Schnarrenberger, 1997) and red algae acquired

Bhattacharya, Debashish

178

TEMAS PARA UNA BIOETICA LATINOAMERICANA  

PubMed Central

El presente trabajo reflexiona sobre el fundamento filosófico de la bioética como disciplina, método y movimiento desde su contexto histórico y en relación con el contexto social y cultural de la vivencia latinoamericana. PMID:20209030

Yunta, Eduardo Rodriguez

2009-01-01

179

A'Una ("Let's Go!")  

ERIC Educational Resources Information Center

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

Brescia, Bill

180

UNA HISTORIA DE LA CIENCIA  

E-print Network

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

Rosas-Ortiz, Jose Oscar

181

SISTEMATIZACIÓN EN UNA REFORMA CURRICULAR  

Microsoft Academic Search

The thematic one must like intention to approach the relation between currículo of the professional formation of the race of the Psychologist and the organizacional change, in a prospective of modernity of century XXI from the term of its first lustrum in the scope of the university superior education. Also it deals with the interrelation and consistency between new the

FACULTAD DE PSICOLOGÍA

2006-01-01

182

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

E-print Network

Nereocystis luet- keana (Mertens) Postels et Ruprecht, are released in culture only in response to a short, filamentous plant. The host of this host-epiphyte species pair, the giant diploid sporophyte of the kelp N Sound region (Fallis 1915; Sheldon 1915; Hurd 1915; Rigg 1917; Duncan 1973) and in even deeper water

California at Santa Cruz, University of

183

Integrating Deer, Quail and Turkey Habitat (Spanish)  

E-print Network

. Se requiere una mayor cantidad en ?reas con dis- turbios frecuentes, topograf?a plana, pastoreo intenso, baja disponibilidad de alimento, vegetaci?n herb?cea dis- persa o matorral con una cobertura de baja calidad. Las bandadas necesitan estar a no m... cobertura para sesteo cuando la densidad de arbustos es baja. Sin embargo, las aplicaciones dirigidas a ciertas plantas ofrecen una gran selectividad y flexibilidad para el manejo de arbustos. Los herbicidas pueden afectar las plantas herb?ceas de las...

Lyons, Robert K.; Ginnett, Tim F.

2001-09-10

184

Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004  

NASA Astrophysics Data System (ADS)

El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el que presenta mas deficiencias en el desarrollo de las competencias. El investigador recomienda disenar e implantar un curriculo basado en competencias y proveer formacion en didactica y procesos de aprendizaje a los profesores.

Rivera Pacheco, Andres

185

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

Cancer.gov

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

186

Cómo sentar las bases de una justicia universal: Creación de redes internacionales y ejercicio de la responsabilidad penal en el caso de violaciones de los derechos humanos en Chile y El Salvador \\/ Grounding global justice: international networks and domestic human rights accountability in Chile and El Salvador  

Microsoft Academic Search

Para algunos, la detención en Londres del ex-dictador chileno Augusto Pinochet, en 1998, fue una demostración paradigmática de la posible eficacia de las así llamadas «redes globales de la sociedad civil» para hacer efectiva la responsabilidad penal de ex Jefes de Estado por crímenes contra la humanidad. Sin embargo, el presente artículo cuestiona la eficacia de las acciones que pueden

Cath Collins

2007-01-01

187

NUMEROS CROMOSOMICOS DE CUATRO ESPECIES DE COSTUS (COSTACEAE), UNA DE CALATHEA, UNA DE MARANTA Y UNA DE STROMANTHE (MARANTACEAE)  

Microsoft Academic Search

Chromosome counts of the following species were done: Costus pictus, C. scaber and C. pulverulentus all have 2n = 18; Costus dirzoi 2n = 27, 28; Calathea ovandensis 2n = 25; Maranta gibba 2n = 40 and Stromanthe macrochlamys 2n = ca. 60, ca. 63. Observations on Costus lead us to consider the probable existence of a polyploid series, with

ANDREW P. VOVIDES; MAITE LASCURAIN

1995-01-01

188

El liberalismo financiero, balance de una experiencia  

Microsoft Academic Search

En los documentos básicos que constituyeron la plataforma de acción del gobierno que comenzó sus funciones en agosto de 1974, es posible encontrar cierta coherencia en torno a los objetivos básicos de la política económica. En todos ellos se manifestaba la necesidad de consolidar el sector exportador como el elemento más dinámico de la economía, buscando convertir a Colombia en

Francisco Azuero

1980-01-01

189

Porque una lágrima es un asunto intelectual  

Microsoft Academic Search

Crying before a work of art can be an aesthetic act: one cries not sentimentally but in order to enter into relationship with something that is beyond what we are capable of, of learning the unknown, I believe. The relationships that I establish with my surroundings inform my work and I learn from them. Work leads me to use everything

Elena del Rivero

2009-01-01

190

L'idea: una redazione diffusa  

Microsoft Academic Search

Created for the 100 years of the Deutsches Museum, the 100 classi are a 'diffuse' editorial office - a team of classes geographically distributed but connected online - that promotes science and technology education on a European dimension. Aiming at fighting against the decline of scientific vocations and the digital divide, the 100 classi Project experiments new ways of integrating

Raffaella Morichetti

2007-01-01

191

Telmaco Talavera Siles Presidente CNU / Rector UNA  

E-print Network

CONTENT #12;Strategically Located Between North and South America #12;Source: INIDE, Population Estimates : Cordoba (C$22.43 x US$1 ­ 2011 average) Poverty : 50% of the total population 70% of the rural population of the Poverty Reduction Strategy · Economical growth with emphasis in the rural sector. · Investment in human

192

Ciencia, Sociedad, Soluciones: Una Introduccion al USGS  

USGS Publications Warehouse

El USGS sirve a la nacion de los Estados Unidos proveyendo informacion fidedigna para ? Describir y comprender la Tierra; ? Minimizar la perdida de vidas y propiedades por desastres naturales; ? Manejar los recursos hidrologicos, biologicos, energeticos y minerales; y ? Mejorar y proteger nuestra calidad de vida.

U.S. Geological Survey

2001-01-01

193

Una década de búsqueda del teatro hondureño  

E-print Network

, Teatro Camino Real, Alach Uinic, COPEMH, TULH, Ekela Itzá. 110 LATIN AMERICAN THEATRE REVIEW 2. De San Pedro Sula: Teatro de Títeres Manantial, La Comuna, Taller Ventana, Vanguardia Popular, Popol Vuh, Medardo Mejía, Círculo Cultural Sampedrano. 3...

Reyes G., Candelario

1992-04-01

194

La gripe aviar Una nueva amenaza pandmica?  

E-print Network

Investigación y Tecnología Agraria y Alimentaria Ramón Soriguer, Estación Biológica de Doñana (CSIC) Madrid (coord.), Pilar Pérez-Breña, Agustín Portela, Gustavo del Real y Ramón Soriguer, 2007 Reservados todos

Figuerola, Jordi

195

NEED HELP WITH YOUR APPLICATION? Visit HealthCare.gov or call us at 1-800-XXX-XXXX. Para obtener una copia de este formulario en Espaol, llame 1-800-XXX-XXXX. If you need help in a language other than English, call 1-800-XXX-XXXX and tell the  

E-print Network

NEED HELP WITH YOUR APPLICATION? Visit HealthCare.gov or call us at 1-800-XXX-XXXX. Para obtener una copia de este formulario en Español, llame 1-800-XXX-XXXX. If you need help in a language other than English, call 1-800-XXX-XXXX and tell the customer service representative the language you need

Acton, Scott

196

RETENCION DE CROMO Y MERCURIO CON ZEOLITAS NATURALES Y SINTETICAS  

Microsoft Academic Search

La presencia de cationes de metales pesados en el agua crea problemas serios por sus efectos tóxicos sobre animales, plantas y sobre la salud humana. Como existe una gran variedad de procesos industriales que generan este tipo de contaminación, el control de la presencia de metales pesados en agua es difícil. Se ha usado, para algunos de ellos, técnicas de

Renán Arriagada; Rafael García; Ruby Cid

197

The French Connection: Cuisine and Water Treatment  

Microsoft Academic Search

During a one-week tour of water treatment plants in France, the author observed several small, simple water systems as well as some of the largest and most sophisticated installations in France. Cultural expectations that affect water treatment practices were of special interest, as were the professional resources provided by privatization. Durante su visita de una semana a plantas de tratamiento

Ida M. Sayre

1986-01-01

198

An in planta technique for cis-/trans-stereochemical analysis of jasmonoyl isoleucine.  

PubMed

A novel technique for determining the cis-/trans-stereochemistry of jasmonoyl-isoleucine by coupling its alcoholic derivatives by sodium borohydride with high performance liquid chromatography-tandem mass spectrometry is described. Resolving cis- and trans-stereochemistry of the jasmonates in Achyranthes plants exposed to airborne (exogenous) trans-d(2)MeJA was demonstrated as an example. This novel application firmly establishes for the first time that trans-d(2)MeJA is converted exclusively into trans-JA-Ile in Achyranthes leaves, whereas the subsequent de novo biosynthesized JA-Ile possesses cis-stereochemistry. The method is simple, reproducible and could be employed for in vivo cis-/trans-stereochemistry analysis of jasmonates in plants. PMID:20188439

Tamogami, Shigeru; Agrawal, Ganesh Kumar; Rakwal, Randeep

2010-07-15

199

Chemical compounds effective against the citrus huanglongbing bacterium 'Candidatus Liberibacter asiaticus' in planta  

Technology Transfer Automated Retrieval System (TEKTRAN)

Citrus huanglongbing (HLB) is one of the most destructive diseases of citrus worldwide, and is threatening the survival of the Floridian citrus industry. Currently, there is no established cure for this century-old and emerging disease. The new antibiotic combination of penicillin and streptomycin (...

200

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

Microsoft Academic Search

Plant diseases constitute an emerging threat to global food security. Many of the currently available antimicrobial agents for agriculture are highly toxic and nonbiodegradable and cause extended environ- mental pollution. Moreover, an increasing number of phytopathogens develop resistance to them. Re- cently, we have reported on a new family of ultrashort antimicrobial lipopeptides which are composed of only four amino

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

2007-01-01

201

Ecologa y Evolucin dE intEraccionEs planta-animal  

E-print Network

of Charles Darwin Online (http:/darwin-online.org.uk/) Fotografía interacción. Bomarea salsilla nacimiento de chArles dArwin. w w w. u n i v e r s i t a r i a . c l ImprESO EN CHILE / prINtED IN CHILE 577,5 x 27 cm. -­ (Bicentenario Charles Darwin) Incluye glosario e índice de términos. Bibliografía: p.343

Traveset, Anna

202

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

E-print Network

/Accepted:8 November 1994 Abstract. The radiotracer 13N was used to undertake compartmental analyses for NO3 or hydrogen peroxide made it possible to distin- guish the metabolic (cytoplasmic) phase from the remain- ing and experiments with the stable isotopic tracer 15N (Rygiewicz et al. 1984a, b; Mar- schner et al. 1991; Flaig

Kronzucker, Herbert J.

203

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

E-print Network

-specific characteristics of the food which act as barriers to nutrient release. Cell size, cell wall, and chromoplast (the carotenoid storage organelle) characteristics were observed in nine fruits and vegetables using light and transmission electron microscopy. Watermelon...

Jeffery, Jennifer L.

2010-01-14

204

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

PubMed Central

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

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

2010-01-01

205

IN PLANTA INTERACTIONS OF THREE PLUM POX POTYVIRUS STRAINS WITHIN CULTIVAR LOVELL PEACH SEEDLINGS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Plum pox potyvirus (PPV) exists as several distinct strains: Dideron (D), Marcus (M), El Amar (EA), and Cherry (C). The M strain is considered the most easily aphid transmissible and epidemic form in peach. The D strain is the oldest recognized strain, most widely distributed worldwide, and the on...

206

Planta (2006) DOI 10.1007/s00425-006-0264-6  

E-print Network

, in plants organ shape is largely a result of coordinated cellular growth (cell divisions and cell elon shape regulation. In plants, the frequency of cell divi- sions, the orientation of cell division planes. petal development to better understand the molecular mechanisms through which cellular growth and organ

Franks, Robert

207

Chrysanthemyl diphosphate synthase operates in planta as a bifunctional enzyme with chrysanthemol synthase activity.  

PubMed

Chrysanthemyl diphosphate synthase (CDS) is the first pathway-specific enzyme in the biosynthesis of pyrethrins, the most widely used plant-derived pesticide. CDS catalyzes c1'-2-3 cyclopropanation reactions of two molecules of dimethylallyl diphosphate (DMAPP) to yield chrysanthemyl diphosphate (CPP). Three proteins are known to catalyze this cyclopropanation reaction of terpene precursors. Two of them, phytoene and squalene synthase, are bifunctional enzymes with both prenyltransferase and terpene synthase activity. CDS, the other member, has been reported to perform only the prenyltransferase step. Here we show that the NDXXD catalytic motif of CDS, under the lower substrate conditions prevalent in plants, also catalyzes the next step, converting CPP into chrysanthemol by hydrolyzing the diphosphate moiety. The enzymatic hydrolysis reaction followed conventional Michaelis-Menten kinetics, with a Km value for CPP of 196 ?m. For the chrysanthemol synthase activity, DMAPP competed with CPP as substrate. The DMAPP concentration required for half-maximal activity to produce chrysanthemol was ?100 ?m, and significant substrate inhibition was observed at elevated DMAPP concentrations. The N-terminal peptide of CDS was identified as a plastid-targeting peptide. Transgenic tobacco plants overexpressing CDS emitted chrysanthemol at a rate of 0.12-0.16 ?g h(-1) g(-1) fresh weight. We propose that CDS should be renamed a chrysanthemol synthase utilizing DMAPP as substrate. PMID:25378387

Yang, Ting; Gao, Liping; Hu, Hao; Stoopen, Geert; Wang, Caiyun; Jongsma, Maarten A

2014-12-26

208

IN PLANTA INTERACTIONS OF FUSARIUM VERTICILLIOIDES WITH CORN AND MECHANISMS OF FUMONISIN PYHTOTOXICITY.  

Technology Transfer Automated Retrieval System (TEKTRAN)

Fusarium verticilliodes, the causative agent of ear rot in corn, can produce the mycotoxin fumonisin B1 (FB1). FB1 inhibits a key eukaryotic enzyme necessary for sphingolipid metabolism, ceramide synthase. Such inhibition causes a number of species-specific animal diseases and may contribute to ca...

209

Nitrogen controls in planta expression of Cladosporium fulvum Avr9 but no other effector genes  

Microsoft Academic Search

During growth on its host tomato, the apoplast-colonizing fungal pathogen Cladosporium fulvum secretes several effector proteins. The expression of the Avr9 gene encoding one of these effector proteins has previously been shown to be strongly induced in vitro during nitrogen deprivation. This led to the hypothesis that expression of additional effector genes in C. fulvum could be triggered by nitrogen

BART P. H. J. THOMMA; MELVIN D. BOLTON; PIERRE-HENRI CLERGEOT; Wit de P. J. G. M

2006-01-01

210

Impact of atmospheric deposition on the headworks of a wastewater treatment plant--a case study.  

PubMed

Specialized sampling equipment and ultra-clean analytical methodology were employed to quantify the concentrations or fluxes of mercury (Hg), cadmium (Cd) and polychlorinated biphenyl (PCBs) in ambient air, precipitation, runoff, sanitary sewer, and wastewater treatment plant (WWTP) influent. The relationship between the atmospheric deposition and runoff on controlled surfaces were explored for the three pollutants. The impact of the atmospheric deposition and runoff to the headwork loading of the WWTP were investigated. Atmospheric deposition was found to be the primary source of the mass of Cd, Hg, and PCBs in runoff from the controlled surfaces. Neither atmospheric deposition nor the runoff was the main sources of the three pollutants to the Detroit Wastewater Treatment Plant (WWTP). Wet weather flow contributes the main portion of the Cd, Hg, and PCBs loading to the WWTP. PMID:11379135

Atasi, K Z; Fujita, G; Le Platte, G; Hufnagel, C; Keeler, G; Graney, J; Chen, T

2001-01-01

211

FOTOSÍNTESIS ESTACIONAL EN PLANTAS JÓVENES DE Agave tequilana SEASONAL PHOTOSYNTHESIS IN YOUNG PLANTS OF Agave tequilana  

Microsoft Academic Search

Studies of the effects of the environment on the photosynthesis of young plants of Agave tequilana are scarce, although these plants occupy one third of the cultivated surface in the State of Jalisco, México. The effect of the seasonal variation on irradiance, air temperature and relative humidity and plant water status in the photosynthesis of young plants of A. tequilana

Eulogio Pimienta-Barrios; Julia Zañudo-Hernández; Javier García-Galindo

212

Estudo de toxicologia clínica de um fitoterápico a base de associações de plantas, mel e própolis  

Microsoft Academic Search

® , durante 28 dias ininterruptos. Os voluntários foram incluídos somente se considerados saudáveis, após exames clínico e complementares que antecederam o estudo. A avaliação laboratorial incluía análises hematológicas, bioquímicas e sorológicas. A mesma avaliação foi repetida após cada semana de tratamento e no pós-estudo, sete dias após a última administração. Os resultados foram submetidos à Análise de Variância (teste

Janaina P. Tavares; Ismael L. Martins; Ariane S. Vieira; Francisco A. V. Lima; Fernando A. F. Bezerra; Manoel O. Moraes; Maria E. A. Moraes

2006-01-01

213

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

E-print Network

Indole acetic acid NPA 1-Naphthylphthalamic acid PGPR Plant growth promotion rhizobacteria rt-PCR Real / Published online: 12 May 2007 © Springer-Verlag 2007 Abstract Certain plant growth-promoting rhizobacteria (PGPR), in the absence of physical contact with a plant stimulate growth via volatile organic compound

Paré, Paul W.

214

An open-source system for in planta gene stacking by bxb1 and cre recombinases.  

PubMed

The rapid development of crops with multiple transgenic traits arouses the need for an efficient system for creating stacked cultivars. Most major crops rely on classical breeding to introgress the transgene from a laboratory variety to the numerous cultivars adapted to different growing regions. Even with vegetative propagated crops, genetic crosses are conducted during varietal improvement prior to vegetative cloning. The probability to assort the 'x' number of transgenic loci into a single genome may seem trivial, (¼) (x) for a diploid species, but given the 'y' number of other nontransgenic traits that breeders also need to assemble into the same genome, the (¼) (x+y) probability for a 'breeding stack' could quickly make the line conversion process unmanageable. Adding new transgenes onto existing transgenic varieties without creating a new segregating locus would require site-specific integration of new DNA at the existing transgenic locus. Here, we tested a recombinase-mediated gene-stacking scheme in tobacco. Sequential site-specific integration was mediated by the mycobacteriophage Bxb1 integrase-catalyzed recombination between attP and attB sites. Transgenic DNA no longer needed after integration was excised by Cre recombinase-mediated recombination of lox sites. Site-specific integration occurred in ~10% of the integration events, with half of those events usable as substrates for a next round of gene stacking. Among the site-specific integrants, however, a third experienced gene silencing. Overall, precise structure and reproducible expression of the sequentially added triple traits were obtained at an overall rate of ~3% of the transformed clones-a workable frequency for the development of commercial cultivars. Moreover, since neither the Bxb1-att nor the Cre-lox system is under patent, there is freedom to operate. PMID:25281665

Hou, Lili; Yau, Yuan-Yeu; Wei, Junjie; Han, Zhiguo; Dong, Zhicheng; Ow, David W

2014-12-01

215

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

Microsoft Academic Search

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

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

2007-01-01

216

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

E-print Network

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

Kronzucker, Herbert J.

217

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

PubMed Central

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

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

2011-01-01

218

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

Microsoft Academic Search

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

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

219

In Planta Proteomics and Proteogenomics of the Biotrophic Barley Fungal Pathogen Blumeria graminis f. sp. hordei*  

PubMed Central

To further our understanding of powdery mildew biology during infection, we undertook a systematic shotgun proteomics analysis of the obligate biotroph Blumeria graminis f. sp. hordei at different stages of development in the host. Moreover we used a proteogenomics approach to feed information into the annotation of the newly sequenced genome. We analyzed and compared the proteomes from three stages of development representing different functions during the plant-dependent vegetative life cycle of this fungus. We identified 441 proteins in ungerminated spores, 775 proteins in epiphytic sporulating hyphae, and 47 proteins from haustoria inside barley leaf epidermal cells and used the data to aid annotation of the B. graminis f. sp. hordei genome. We also compared the differences in the protein complement of these key stages. Although confirming some of the previously reported findings and models derived from the analysis of transcriptome dynamics, our results also suggest that the intracellular haustoria are subject to stress possibly as a result of the plant defense strategy, including the production of reactive oxygen species. In addition, a number of small haustorial proteins with a predicted N-terminal signal peptide for secretion were identified in infected tissues: these represent candidate effector proteins that may play a role in controlling host metabolism and immunity. PMID:19602707

Bindschedler, Laurence V.; Burgis, Timothy A.; Mills, Davinia J. S.; Ho, Jenny T. C.; Cramer, Rainer; Spanu, Pietro D.

2009-01-01

220

Comparative assessments of CRISPR-Cas nucleases' cleavage efficiency in planta.  

PubMed

Custom-designed nucleases can enable precise plant genome editing by catalyzing DNA-breakage at specific targets to stimulate targeted mutagenesis or gene replacement. The CRISPR-Cas system, with its target-specifying RNA molecule to direct the Cas9 nuclease, is a recent addition to existing nucleases that bind and cleave the target through linked protein domains (e.g. TALENs and zinc-finger nucleases). We have conducted a comparative study of these different types of custom-designed nucleases and we have assessed various components of the CRISPR-Cas system. For this purpose, we have adapted our previously reported assay for cleavage-dependent luciferase gene correction in Nicotiana benthamiana leaves (Johnson et al. in Plant Mol Biol 82(3):207-221, 2013). We found that cleavage by CRISPR-Cas was more efficient than cleavage of the same target by TALENs. We also compared the cleavage efficiency of the Streptococcus pyogenes Cas9 protein based on expression using three different Cas9 gene variants. We found significant differences in cleavage efficiency between these variants, with human and Arabidopsis thaliana codon-optimized genes having the highest cleavage efficiencies. We compared the activity of 12 de novo-designed single synthetic guide RNA (sgRNA) constructs, and found their cleavage efficiency varied drastically when using the same Cas9 nuclease. Finally, we show that, for one of the targets tested with our assay, we could induce a germinally-transmitted deletion in a repeat array in A. thaliana. This work emphasizes the efficiency of the CRISPR-Cas system in plants. It also shows that further work is needed to be able to predict the optimal design of sgRNAs or Cas9 variants. PMID:25403732

Johnson, Ross A; Gurevich, Vyacheslav; Filler, Shdema; Samach, Aviva; Levy, Avraham A

2015-01-01

221

Video Article A Cell-to-cell Macromolecular Transport Assay in Planta Utilizing Biolistic  

E-print Network

and Cell Biology, SUNY At Stony Brook 2Bio-Medical Engineering Department, NED University of Engineering be used. 1. Arabidopsis plants Grow one Arabidopsis plant on Pro-Mix BX in a pot (10 cm x 10 cm x 10 cm-Mix BX in a pot (20 cm x 20 cm x 20 cm) in an environment-controlled chamber with a long photoperiod (16

Citovsky, Vitaly

222

Evite los Conceptos Erróneos cuando Enseñe sobre las Plantas  

NSDL National Science Digital Library

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

David R. Hershey (biology education consultant;)

2005-05-01

223

Heterologous expression of glycosyl hydrolases in planta: a new departure for biofuels.  

PubMed

The concept of expressing non-plant glycosyl hydrolase genes in plant tissue is nearly two decades old, yet relatively little work in this field has been reported. However, resurgent interest in technologies aimed at enabling processes that convert biomass to sugars and fuels has turned attention toward this intuitive solution. There are several challenges facing researchers in this field, including the development of better and more specifically targeted delivery systems for hydrolytic genes, the successful folding and post-translational modification of heterologous proteins and the development of cost-effective process strategies utilizing these transformed plants. The integration of these concepts, from the improvement of biomass production and conversion characteristics to the heterologous production of glycosyl hydrolases in a high yielding bioenergy crop, holds considerable promise for improving the lignocellulosic conversion of biomass to ethanol and subsequently to fuels. PMID:18579242

Taylor, Larry E; Dai, Ziyu; Decker, Stephen R; Brunecky, Roman; Adney, William S; Ding, Shi-You; Himmel, Michael E

2008-08-01

224

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

PubMed Central

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

Rioja, Cristina; Van Wees, Saskia C.; Charlton, Keith A.; Pieterse, Corné M. J.; Lorenzo, Oscar; García-Sánchez, Susana

2013-01-01

225

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

PubMed Central

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

Hanikenne, Marc; Baurain, Denis

2013-01-01

226

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

PubMed Central

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

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

2003-01-01

227

Universidad Politecnica de Valencia Departamento de Matematica Aplicada  

E-print Network

Antonia, a To~ni y Luis, mis hermanos, y a Asun: por mimarme. #12;#12;La realizaci´on de esta tesis´elix Mart´inez y N´estor Thome, por su ayuda en la edici´on de esta memoria. A las profesoras ´Angeles Mart´inez de una planta nuclear . . . . . . . . . . . . . 1 1.2 Notaci´on y definiciones previas

Marín, José

228

Revue de presse hebdomadaire 21-27 mai 2012  

E-print Network

presencia en redes sociales. El País Semanal ­ Domingo 27 de Mayo de 2012 Internet Twitter, una mina sociológica (por Tom C. Avendaño) : Toda la información en apariencia inane vertida en las redes sociales ha dado la espalda a la plantas atómicas. Estrategias ­ Emprendedores Las redes sociales también

Rennes, Université de

229

Managing Warm-season Improved Pastures (Spanish)  

E-print Network

?s baja. Las hojas son m?s digeribles que los tallos, y contienen la mayor parte de los nutrientes. Un alto contenido de hojas en una planta significa mayor calidad del forraje, mientras que un alto contenido de tallos significa una calidad menor. Manejo... m?s eficientes en el uso de agua. Numerosas investigaciones y demostraciones de forraje por los condados han demostrado que, sin fertilizaci?n, se necesitan en- tre 16 y 20 pulgadas para producir 1 tonelada de forraje de baja calidad (Tabla 4). Con...

Stichler, Charles; Prostko, Eric P.; Livingston, Stephen

1999-02-17

230

Sustancias psicoactivas y embarazo. Estudio en una población hospitalaria  

Microsoft Academic Search

Objective. The objective of this study was to explore legal and illegal drugs in pregnant women at two of the main obstetric public hospitals in Montevideo (Uruguay). Material and methods. To perform this objective the exams in the meconium were used. Fatty acid ethyl esters (FAEES) were used to determine alcohol consumption in the mother. For other drugs it was

R. MAGRIa; H. A. MIGUEZb; J. HUTSONc; A. MENÉNDEZe; G. KORENc; Y R. BUSTOSa

2008-01-01

231

Aspergilosis: puesta al día de una patología a considerar  

Microsoft Academic Search

Pulmonary aspergillosis is a mycotic infection caused by the aspergillus fumigatus, saprophyte of the normal human sputum. Five patients with non invasive aspergillosis were studied, of whom 4 were adults (3 women, 1 man) and one, pediatric, with invasive aspergillosis. All of them were studied by conventional X-ray, spiral CT, multislice CT and video capsule endoscopy. The presentation is predominant

Héctor G. Oxilia; Rodrigo G. Oxilia; Fernando Falco; J. R. Villavicencio Rosario

2007-01-01

232

Retención escolar. Un camino hacia una nueva escuela  

Microsoft Academic Search

Basándose en el proyecto “Fomento a la retención escolar”, realizado en el año 2000 por la Alcaldía Mayor de Bogotá, D. C., por intermedio del Ministerio de Educación, los investigadores conceptualizan el fenómeno de la deserción escolar un aporte que se constituye en radiografía de la situación que enfrentan las instituciones en Colombia.

Cecilia Dimaté Rodríguez

233

Characters and Caricatures in Nale Roxlo's Una viuda difícil.  

E-print Network

's instinctive pro pensity towards symbols6 is again manifested in her exaggerated, fanciful de scription of the latest model in exvotos-, a phoenix, a cupid whose bandage hás slipped from one eye, a stork, a horn of plenty, a dog, a key, a locket, a perfume... points out to her that the funereal, black suit that she had made for Mariano could well be interpreted as a sign of mourning for his seven victims. For Isabel, the gesture in having it made had one sig nificance, so that she failed to see...

Ló pez, Daniel

1975-04-01

234

UNA NUEVA ESPECIE DE STROMANTHE (MARANTACEAE) DE VERACRUZ, MÉXICO  

Microsoft Academic Search

Stromanthe popolucana is described as a new species of Marantaceae from southern Veracruz, Mexico. It appears to be related to Stromanthe jacquinii (Roem. & Schult.) Kennedy & Nicolson and Stromanthe ramosissima L., from both of which it differs in its smaller petioles, leaves, and fruits, and its much longer peduncles and cymes. It is a species of evergreen tropical rain

Gonzalo Castillo-Campos; Andrew P. Vovides; Mario Vázquez Torres

235

Comorbilidad entre trastorno bipolar y migraña: una revisión sistemática  

Microsoft Academic Search

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

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

2005-01-01

236

UNA REVISIÓN AL ESTUDIO DE LA DELINCUENCIA Y CRIMINALIDAD  

Microsoft Academic Search

This paper analyses the state of the art of the different issues regarding crime and criminality and fi nds out that such issues originate from individual features. This paper also considers that the possibilities individuals have within society may be benefi cial or conducive to crime and criminality given the personal and labor limitations they may fi nd. This paper

LUIS EDUARDO SANDOVAL; DEISSY MARTÍNEZ BARÓN

2008-01-01

237

PROGETTAZIONE DAMAGE TOLERANCE DI UNA FUSOLIERA DI ELICOTTERO  

Microsoft Academic Search

The aim of this paper is the description of the damage tolerant design of the fuselage of a helicopter. The obj ect of the study is the rear fuselage, from the main cabin to the tail rotor. Due to the complexity of the structure, the work has been carried out by means of the finite element method, with the use

Daniele Colombo; Marco Giglio; Corrado Giani; Ugo Mariani

238

Fragmentos de Sombra: Una Biografía Intelectual de Fernando González  

E-print Network

ésta se establece como principio ordenador de la producción literaria posterior a las Independencias (Transculturación narrativa en América Latina). La nación, representada a través de un individuo, pasa a ser el personaje principal de las narrativas...

Palacios Perez, Jose

2014-07-01

239

LAS LLUVIAS EN AMÉRICA CENTRAL: UNA CLIMATOLOGÍA GEOGRÁFICA  

Microsoft Academic Search

This study analyzes rain distribution in Central America, considered as a geo- graphic area. Geography, as spatial science, allows for the climatologic analysis of the isthmus at three different scales. The zone scale allows visualizing the influence of the northern winds, the behavior of the inter-tropical convergence area and the oceanic influence over the continent. The regional scale focuses on

Gilbert Vargas Ulate

2001-01-01

240

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

E-print Network

The reproductive biology of Bosca´s newt (Lissotriton boscai) and palmate newt (Lissotriton helveticus) has been correlation between female and eggs size was found in either species. Palmate newts laid more eggs daily than than Bosca´s newt, also being higher the total number of the eggs laid during all the days

Galán, Pedro

241

Experiencias y repercusión de una formación en ética de investigación  

PubMed Central

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

Rupaya, Carmen Rosa García

2012-01-01

242

Colapso gravitatorio radiante de una estrella extraña en relatividad general  

Microsoft Academic Search

The seminumeric method by Herrera, Jimenez and Ruggeri, which allows to find dynamic solutions of the equations of Einstein with spherical symmetry starting from well-known statics solutions, are used to treat the collapse of a strange star in the \\

L. P. Neira

1999-01-01

243

Hacia una teoria de unificacion para los comportamientos cognitivos  

E-print Network

Each cognitive science tries to understand a set of cognitive behaviors. The structuring of knowledge of this nature's aspect is far from what it can be expected about a science. Until now universal standard consistently describing the set of cognitive behaviors has not been found, and there are many questions about the cognitive behaviors for which only there are opinions of members of the scientific community. This article has three proposals. The first proposal is to raise to the scientific community the necessity of unified the cognitive behaviors. The second proposal is claim the application of the Newton's reasoning rules about nature of his book, Philosophiae Naturalis Principia Mathematica, to the cognitive behaviors. The third is to propose a scientific theory, currently developing, that follows the rules established by Newton to make sense of nature, and could be the theory to explain all the cognitive behaviors.

Miguel, Sergio

2008-01-01

244

Gua rpida para la solicitud de una accin Marie Curie  

E-print Network

· la movilidad transnacional #12;¿Tengo la experiencia necesaria? En el momento de cierre de la/third-country-agreements_en.doc #12;¿Debo cumplir con algún patrón de movilidad? Todos los solicitantes de cualquiera de las Acciones Marie Curie (IEF, IIF, IOF) deben cumplir con la regla general de movilidad que estipula: "No deberán

Escolano, Francisco

245

GESTIÓN DE RECURSOS HUMANOS: ENFOQUE SISTÉMICO EN UNA PERSPECTIVA GLOBAL  

Microsoft Academic Search

The thematic one must like intention to approach the main processes of the management of the human resources in the organizations of production of goods and services (company, industry, institution) is of the public or deprived sector, that in its operational dynamics is present the psychological component. Also it treats his interrelation that under a sistémico approach and in the

FACULTAD DE PSICOLOGÍA; U NM SM

246

La Ciencia de los Antiguos Mexicanos: Una Bibliografia Selecta  

ERIC Educational Resources Information Center

Fifty-five citations pertaining to the scientific and mathematic development of ancient Mexicans, particularly the Mayas, are given in this select bibliography. The introduction and descriptions of resource libraries in 8 States are in Spanish. (NQ)

Ortiz-Franco, Luis; Magana, Maria

1973-01-01

247

Una perspectiva sobre la naturaleza en el Humanismo italiano  

Microsoft Academic Search

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

Silvia Magnavacca

248

Mujeres y Salud Una metodología para su estudio  

Microsoft Academic Search

The present paper intent to support the usefulness of some theoretical-methodological qualitative perspectives for the study of women's health studies. This is a contribution to women's function recognition in health systems as traditional health providers, communitary organizers and an invaluable help in familiar health care. Paper emphasized the importance of recognizing their needs in regard of planning and addressing health

Verónica De León Reyes; Blanca Pelcastre Villafuerte; Agustín Díaz Gois

2000-01-01

249

Derechos humanos, una oportunidad para las políticas públicas en salud  

Microsoft Academic Search

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

Álvaro Franco-Giraldo; Carlos Álvarez-Dardet

2008-01-01

250

Los derechos de los pacientes: una cuestión de calidad  

Microsoft Academic Search

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

Pablo Hernando

2005-01-01

251

E B UNA-TRAP FISHERY E E ITERRANEAN SEA  

E-print Network

of Commercial Fisheries, Donald L. McKernan, Director THE BLUEFIN TUNA-TRAP FISHERY OF THE - WESTERN .. Placement . bluefin tuna . . ·. . . . Description and construetion details. . . Trap operation of the bag of the trap to concentrate the tuna prior to capture. Photo supplied by Dr. Alonzo Palau, Genova

252

Recuerdos de una revolucion cultural (Memories of a Cultural Revolution)  

ERIC Educational Resources Information Center

Describes elements of the modernism movement in Brazil; paper read at a symposium commemorating the fiftieth anniversay of the Week of Modern Art of Sao Paulo'' held February 11-12, 1972, at the University of California, Los Angeles, California. (DS)

Carvalho-Neto, Paulo de

1973-01-01

253

Elementos de una teoría cultural de la objetivación1  

Microsoft Academic Search

In this article, we present the general bases for a cultural theory of objectification. The theory in question deals with the teaching and learning of mathematics and takes its inspiration from some anthropological and historico-cultural schools of knowledge. This theory relies on a non-rationalist epistemology and ontology which give rise, on the one hand, to an anthropological conception of thought,

Luis Radford

254

Servicios de los Ecosistemas: Una Introducción  

NSDL National Science Digital Library

The issue-focused reprint explains how natural ecosystems produce services upon which we are dependent. For example, they: provide us with clean water and air, pollinate our crops and disperse seeds, protect us from extreme weather and ultraviolet light, and control pests and disease-carrying organisms.

Sociedad Americana de EcologÃÂía (Ecological Society of America, ESA) (la Sociedad Americana de EcologÃÂía;)

2000-06-01

255

Una realizzazione attesa: il catalogo generale delle meridiane in Italia  

NASA Astrophysics Data System (ADS)

The Sundial Section of the UAI has compiled the first catalog of 12643 sundials in 3109 municipalities of Italy. Sundials are instruments that measure the passage of time through the movements of the Sun and the shadows it casts. The volume comprises four chapters with introductoring sections regarding how to approach a reading of volume and an appendix containing additional documentary material.

Frosina, Angelo

2002-01-01

256

Il cilindro di Este: testimonianza di una tradizione perduta.  

NASA Astrophysics Data System (ADS)

In the Museum of Este, near Padua in Italy, lies the missing ring of an ancient gnomonic tradition. A small portable roman sundial is on display behind the glasses of a casket, without knowing its real importance. It's in fact the tangible witness of a much more ancient tradition than what believed in the past.

Arnaldi, M.

1998-04-01

257

LA TEORÍA DE EVOLUCIÓN DESDE UNA PERSPECTIVA HOLÍSTICA  

Microsoft Academic Search

El presente ensayo analiza las principales teorias evolutivas desde Darwin hasta la fecha, entre ellas la teoría de Lamark y la Teoría de la Quimiosintética, todas ellas con un sesgo fuertemente biologico, donde los cambios más decisivos en la homnización que se observan son: la adquisición de la postura erecta, que liberó sus extremidades anteriores y el desarrollo del cerebro,

Fredy Hardy Wompner Gallardo

2010-01-01

258

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

ERIC Educational Resources Information Center

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

Bianchi, Gary; Bianchi, Maria Eugenia Matute

259

La coesione territoriale nella UE a 27: una rassegna multidisciplinare  

Microsoft Academic Search

In the Treaty of Lisbon it is established that the European Union pursues the goal of the economic, social and territorial cohesion. In this way a new concept has been introduced both in the political-institutional and scientific debate - exactly the one of the territorial cohesion - on which effective meaning and its implications on the operative plan, until now

Aurelio Bruzzo; Nicola Camatti

2010-01-01

260

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

NASA Astrophysics Data System (ADS)

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

Foglia, Sergio; Ligustri, Rolando; Milani, Giannantonio

2002-01-01

261

Le differenti relevance in information retrieval: una classificazione  

E-print Network

Dipartimento di Matematica e Informatica, Università di Udine V. delle Scienze, 206 -- Loc. Rizzi -- 33100. 755­756. L'attinenza 1 ha ormai quasi 40 anni, risalendo alla International Conference for Scientific Information del 1958. Non si può dire che in questi 40 anni sia stata trascurata: soprattutto negli anni '60 e

Mizzaro, Stefano

262

Le differenti relevance in information retrieval: una classificazione  

E-print Network

Dipartimento di Matematica e Informatica, Università di Udine V. delle Scienze, 206 ­ Loc. Rizzi ­ 33100 Udine. 755-756. L'attinenza1 ha ormai quasi 40 anni, risalendo alla International Conference for Scientific Information del 1958. Non si può dire che in questi 40 anni sia stata trascurata: soprattutto negli anni '60 e

Mizzaro, Stefano

263

El rastro de Elena Garro: Una mirada feminista  

E-print Network

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

Rosas Lopá tegui, Patricia

2002-04-01

264

Itinera, N .3, 2012. Pagina 90 "C'erano una volta una storia, un corpo, un Tutto".  

E-print Network

di figurale, in Francis Bacon. Logica della sensazione2, a proposito della nozione di figurale, la significativamente quel corpo senza organi di artaudiana 1 Cfr. G. Deleuze, F. Guattari, L'anti-Edipo. Capitalismo e schizofrenia (1972), Einaudi, Torino 1975. 2 G. Deleuze, Francis Bacon. Logica della sensazione (1981

Paris-Sud XI, Université de

265

Hispanic Americans: A Look Back, A Look Ahead (Hispanic Americanos: Una Mirada Hacia Atras, Una Mirada Hacia Adelante).  

ERIC Educational Resources Information Center

Hispanic Americans are diverse, but researchers are often limited by available data that do not highlight their diversity. This report presents information about the total Hispanic American population, along with data on the largest subgroups that make up that total. Good and bad news about Hispanics is presented using data from the U.S. Bureau of…

Hodgkinson, Harold L.; Outtz, Janice Hamilton

266

Computacin UbicuaComputacin Ubicua Una nueva tcnica de computacin distribuidaUna nueva tcnica de computacin distribuida  

E-print Network

Computacional: qué es?Grid Computacional: qué es? Otros términos usados: Metasistemas, Metacomputación, Sistemas disponibilidad #12;Grid Computacional: qué es?Grid Computacional: qué es? Ambientes que integran, a través de. #12;Grid Computacional: qué es?Grid Computacional: qué es? Los GRIDS hacen posible el compartir

Cardinale Villarreal, Yudith C.

267

Computacin UbicuaComputacin Ubicua Una nueva tcnica de computacin distribuida Una nueva tcnica de computacin distribuida  

E-print Network

Grids ­ Teragrid Backplane #12;Grid Computacional: qué es?Grid Computacional: qué es? Otros términos usados alto desempeño y alta disponibilidad #12;Grid Computacional: qué es?Grid Computacional: qué es la provee el middleware. #12;Grid Computacional: qué es?Grid Computacional: qué es? Los GRIDS hacen

Cardinale Villarreal, Yudith C.

268

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

NASA Astrophysics Data System (ADS)

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

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

2013-04-01

269

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

NSDL National Science Digital Library

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

Pamela Soltis (University of Florida, Gainesville;)

2006-03-01

270

Antibiosis and Antagonism of Sclerotinia homoeocarpa and Drechslera poae by Pseudomonas fluorescens Pf-5 In Vitro and In Planta.  

PubMed

ABSTRACT Pseudomonas fluorescens strain Pf-5, which produces several antifun-gal metabolites, including the antibiotics pyoluteorin, pyrrolnitrin, and 2,4-diacetylphloroglucinol, was tested for its ability to inhibit Sclerotinia homoeocarpa (causal agent of dollar spot) and Drechslerapoae (causal agent of 'melting-out') in vitro and in turfgrass; Tn5 mutants with altered antibiotic production also were tested. Inhibition in vitro differed with the medium used, but both fungi generally were inhibited by Pf-5. In most cases, a mutant deficient in pyoluteorin but not pyrrolnitrin or 2,4-di-acetylphloroglucinol was as inhibitory as Pf-5, whereas a pyrrolnitrin-deficient mutant was less inhibitory than Pf-5 in most fungus/medium combinations. High-performance liquid chromatography analysis of culture extracts showed that bacterial genotype and nutrition have an interactive effect on antibiotic production, such that conditions causing an increase in one antibiotic may increase or decrease another. The purported deficiencies for the pyrrolnitrin- and pyoluteorin-deficient mutants were confirmed. In S. homoeocarpa-infested grass clippings incubated in a moist chamber, Pf-5 reduced mycelial growth, whereas the pyrrolnitrin-deficient mutant did not and the pyoluteorin-deficient mutant was intermediate. In greenhouse experiments, Pf-5 reduced dollar spot disease incidence in bentgrass and bluegrass when sprayed over inoculated turf. In grass clippings infested with D. poae and incubated in a moist chamber under favorable conditions for spore production, Pf-5 did not reduce significantly the number of spores produced compared with the non-treated control. However, Pf-5 reduced melting-out disease incidence and severity in bluegrass inoculated with spores of D. poae under greenhouse conditions. PMID:18945079

Rodriguez, F; Pfender, W F

1997-06-01

271

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

PubMed

Vascular Streak Dieback (VSD) disease of cacao (Theobroma cacao) in Southeast Asia and Melanesia is caused by a basidiomycete (Ceratobasidiales) fungus Oncobasidium theobromae (syn. =Thanatephorus theobromae). The most characteristic symptoms of the disease are green-spotted leaf chlorosis or, commonly since about 2004, necrotic blotches, followed by senescence of leaves beginning on the second or third flush behind the shoot apex, and blackening of infected xylem in the vascular traces at the leaf scars resulting from the abscission of infected leaves. Eventually the shoot apex is killed and infected branches die. In susceptible cacao the fungus may grow through the xylem down into the main stem and kill a mature cacao tree. Infections in the stem of young plants prior to the formation of the first 3-4 lateral branches usually kill the plant. Basidiospores released from corticioid basidiomata developed on leaf scars or along cracks in the main vein of infected leaves infect young leaves. The pathogen commonly infects cacao but there are rare reports from avocado. As both crops are introduced to the region, the pathogen is suspected to occur asymptomatically in native vegetation. The pathogen is readily isolated but cultures cannot be maintained. In this study, DNA was extracted from pure cultures of O. theobromae obtained from infected cacao plants sampled from Indonesia. The internal transcribed spacer region (ITS), consisting of ITS1, 5.8S ribosomal RNA and ITS2, and a portion of nuclear large subunit (LSU) were sequenced. Phylogenetic analysis of ITS sequences placed O. theobromae sister to Ceratobasidium anastomosis groups AG-A, AG-Bo, and AG-K with high posterior probability. Therefore the new combination Ceratobasidium theobromae is proposed. A PCR-based protocol was developed to detect and identify C. theobromae in plant tissue of cacao enabling early detection of the pathogen in plants. A second species of Ceratobasidium, Ceratobasidium ramicola, identified through ITS sequence analysis, was isolated from VSD-affected cacao plants in Java, and is widespread in diseased cacao collected from Indonesia. PMID:22208598

Samuels, Gary J; Ismaiel, Adnan; Rosmana, Ade; Junaid, Muhammad; Guest, David; McMahon, Peter; Keane, Philip; Purwantara, Agus; Lambert, Smilja; Rodriguez-Carres, Marianela; Cubeta, Marc A

2012-01-01

272

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

PubMed Central

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

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

2001-01-01

273

Modeling, identification, and validation of models for predictive ammonia control in a wastewater treatment plant--a case study.  

PubMed

The aim of this work is to develop the ammonia models that could be used for model predictive control (MPC) of nitrification process in a wastewater treatment plant. First, a reduced nonlinear model is presented, which is based on expression for nitrification reaction rate in activated sludge model No. 1 and modified for attached biomass processes, while second, a linear black-box model is shown. The data used for model identification were collected during several weeks of experiments on a real plant so that good identification data were obtained. The designed models were validated based on open loop simulations and predictions. Validation results show that the reduced nonlinear model performs better compared to the linear model, however, both models show relatively large errors compared to the real plant data. Hence, a closed loop simulation study was performed to see the differences between the performance of model predictive controller using previously estimated linear and nonlinear models and a standard proportional integral (PI) controller. From the simulation study results it was seen that in spite of relatively large model errors the MPC algorithms give better results in terms of ammonia removal compared to the PI controller, while MPC with the nonlinear model shows additional improvements over the MPC with the linear model. PMID:16649563

Stare, Aljaz; Hvala, Nadja; Vrecko, Darko

2006-04-01

274

A Meloidogyne incognita effector is imported into the nucleus and exhibits transcriptional activation activity in?planta.  

PubMed

Root-knot nematodes are sedentary biotrophic endoparasites that maintain a complex interaction with their host plants. Nematode effector proteins are synthesized in the oesophageal glands of nematodes and secreted into plant tissue through a needle-like stylet. Effectors characterized to date have been shown to mediate processes essential for nematode pathogenesis. To gain an insight into their site of action and putative function, the subcellular localization of 13 previously isolated Meloidogyne incognita effectors was determined. Translational fusions were created between effectors and EGFP-GUS (enhanced green fluorescent protein-?-glucuronidase) reporter genes, which were transiently expressed in tobacco leaf cells. The majority of effectors localized to the cytoplasm, with one effector, 7H08, imported into the nuclei of plant cells. Deletion analysis revealed that the nuclear localization of 7H08 was mediated by two novel independent nuclear localization domains. As a result of the nuclear localization of the effector, 7H08 was tested for the ability to activate gene transcription. 7H08 was found to activate the expression of reporter genes in both yeast and plant systems. This is the first report of a plant-parasitic nematode effector with transcriptional activation activity. PMID:24863562

Zhang, Lei; Davies, Laura J; Elling, Axel A

2015-01-01

275

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

PubMed Central

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

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

2014-01-01

276

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 ...

277

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

PubMed Central

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

2014-01-01

278

Health risk assessment of air emissions from a municipal solid waste incineration plant--a case study.  

PubMed

A health risk assessment of long-term emissions of carcinogenic and non-carcinogenic air pollutants has been carried out for the municipal solid waste incinerator (MSWI) of the city of Taranto, Italy. Ground level air concentrations and soil deposition of carcinogenic (Polychlorinated Dibenzo-p-Dioxins/Furans and Cd) and non-carcinogenic (Pb and Hg) pollutants have been estimated using a well documented atmospheric dispersion model. Health risk values for air inhalation, dermal contact, soil and food ingestion have been calculated based on a combination of these concentrations and a matrix of environmental exposure factors. Exposure of the surrounding population has been addressed for different release scenarios based on four pollutants, four exposure pathways and two receptor groups (children and adults). Spatial risk distribution and cancer excess cases projected from plant emissions have been compared with background mortality records. Estimated results based on the MSWI emissions show: (1) individual risks well below maximum acceptable levels, (2) very small incremental cancer risk compared with background level. PMID:17611096

Cangialosi, Federico; Intini, Gianluca; Liberti, Lorenzo; Notarnicola, Michele; Stellacci, Paolo

2008-01-01

279

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

NASA Technical Reports Server (NTRS)

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

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

2002-01-01

280

Characterization of a strong, constitutive mung bean (Vigna radiata L.) promoter with a complex mode of regulation in planta.  

PubMed

We report the cloning and characterization in tobacco and Arabidopsis of a Vigna radiata L. (mung bean) promoter that controls the expression of VR-ACS1, an auxin-inducible ACC synthase gene. The VR-ACS1 promoter exhibits a very unusual behavior when studied in plants different from its original host, mung bean. GUS and luciferase in situ assays of transgenic plants containing VR-ACS1 promoter fusions show strong constitutive reporter gene expression throughout tobacco and Arabidopsis development. In vitro quantitative analyses show that transgenic plants harboring VR-ACS1 promoter-reporter constructs have on average 4-6 fold higher protein and activity levels of both reporter genes than plants transformed with comparable CaMV 35S promoter fusions. Similar transcript levels are present in VR-ACS1 and CaMV 35S promoter lines, suggesting that the high levels of gene product observed for the VR-ACS1 promoter are the combined result of transcriptional and translational activation. All tested deletion constructs retaining the core promoter region can drive strong constitutive promoter activity in transgenic plants. This is in contrast to mung bean, where expression of the native VR-ACS1 gene is almost undetectable in plants grown under normal conditions, but is rapidly and highly induced by a variety of stimuli. The constitutive behavior of the VR-ACS1 promoter in heterologous hosts is surprising, suggesting that the control mechanisms active in mung bean are impaired in tobacco and Arabidopsis. The 'aberrant' behavior of the VR-ACS1 promoter is further emphasized by its failure to respond to auxin and cycloheximide in heterologous hosts. VR-ACS1 promoter regulatory mechanisms seem to be different from all previously characterized auxin-inducible promoters. PMID:16315097

Cazzonelli, Christopher I; McCallum, Emily J; Lee, Rebecca; Botella, José Ramón

2005-12-01

281

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

PubMed

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

Samanta, Jatindra Nath; Mandal, Kunal

2013-06-01

282

Production of recombinant single chain antibodies (scFv) in vegetatively reproductive Kalanchoe pinnata by in planta transformation.  

PubMed

We developed an asexual reproductive plant, Kalanchoe pinnata, as a new bioreactor for plant-based molecular farming using a newly developed transformation method. Leaf crenate margins were pin-pricked to infect the plant with the Agrobacterium strain LBA4404 and vacuum infiltration was also applied to introduce the target gene into the plants. Subsequently, the young mother leaf produced new clones at the leaf crenate margins without the need for time- and labor-consuming tissue culture procedures. The average transformation rates were approximately 77 and 84% for pin-prickling and vacuum-infiltration methods, respectively. To functionally characterize an introduced target protein, a nucleic acid hydrolyzing recombinant 3D8 scFv was selected and the plant based 3D8 scFv proteins were purified and analyzed. Based on abzyme analysis, the purified protein expressed with this system had catalytic activity and exhibited all of properties of the protein produced in an E. coli system. This result suggested that vegetatively reproductive K. pinnata can be a novel and potent bioreactor for bio-pharmaceutical proteins. PMID:19688214

Jung, Yuchul; Rhee, Yong; Auh, Chung-Kyoon; Shim, Hyekyung; Choi, Jung-Jin; Kwon, Suk-Tae; Yang, Joo-Sung; Kim, Donggiun; Kwon, Myung-Hee; Kim, Yong-Sung; Lee, Sukchan

2009-10-01

283

Planta (1994)193:421~429 P l a n t a 9 Springer-u 1994  

E-print Network

, where F A was under some conditions higher at low than at high rates of carbon assimilation, are ex not change much as irradiances increased from low to high photon flux densities. When ATP relationship existed also between the quantum efficiency of electron flow through photosystem II

Schönknecht, Gerald

284

Transient RNAi assay in 96-well plate format facilitates high-throughput gene function studies in planta.  

PubMed

Here we describe a rapid high-throughput method for performing RNA interference (RNAi) in moss, in which phenotyping is performed within 1 week after transformation. The moss Physcomitrella patens is a great plant model system for reverse genetic studies due to its amenability to homologous recombination as well as RNAi. Our lab has developed a rapid RNAi assay to screen for growth phenotypes in moss protonemal tissue. Here we describe how we have recently further facilitated this assay by modifying the PEG-mediated transformation protocol allowing for transformations to be carried out in a semiautomated fashion in a 96-well plate format. PMID:22893297

Wu, Shu-Zon; Bezanilla, Magdalena

2012-01-01

285

Use of a PTGS-MAR expression system for efficient in planta production of bioactive Arabidopsis thaliana plant defensins  

Microsoft Academic Search

Plant defensins, exhibiting various levels of inhibitory activity against fungal pathogens, are potent candidates for pharmaceutical\\u000a or agricultural antimycotics. Study of the plant defensins from the model plant Arabidopsis thaliana requires the purification of these peptides. However, heterologous production of defensins for large-scale in vitro bioactivity\\u000a assays is often experienced as a major problem. In this study we describe the

Jan Sels; Stijn L. Delauré; An M. Aerts; Paul Proost; Bruno P. A. Cammue; Miguel F. C. De Bolle

2007-01-01

286

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

E-print Network

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

Kronzucker, Herbert J.

287

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

PubMed Central

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

2013-01-01

288

Más Conceptos Erróneos a Evitar en la Enseñanza sobre las Plantas  

NSDL National Science Digital Library

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

David Hershey (biology education consultant;)

2006-04-01

289

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

PubMed

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

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

2014-01-01

290

The gibberellin-induced, cysteine-rich protein GIP2 from Petunia hybrida exhibits in planta antioxidant activity.  

PubMed

Numerous GAST-like genes have been identified in various plant species. All code for small proteins with a conserved C-terminal region in which 12 cysteines are located in exactly the same positions. We have previously identified five gibberellin (GA)-induced GAST1-like genes in petunia, GIP1-5. GIP2 is expressed in elongating zones, and its suppression in transgenic petunia plants inhibits stem elongation, suggesting a role for the protein in GA-induced cell growth. However, nothing is known about the biochemical activity of GIP2 or any other GAST-like protein. As all contain putative catalytic disulfide bonds (putative redox-active cysteines), we speculated that they might be involved in redox regulation. Expression analysis of GIP2, GIP4 and GIP5 revealed that they are induced by H(2)O(2). To study whether GIP2 modulates H(2)O(2) levels, we generated transgenic petunia plants expressing GIP2 under the regulation of the ubiquitous CaMV 35S promoter. The transgene reduced H(2)O(2) levels in leaves following wounding. It also reduced the levels of H(2)O(2) in guard cells following osmotic stress and ABA treatments, leading to the suppression of stomatal closure. In addition, the transgene promoted stem and corolla elongation. As reactive oxygen species (ROS) are involved in cell elongation, we suggest that GIP2 affects growth by regulating the levels of ROS. As all known GAST-like proteins contain putative redox-active cysteines, they may all act as antioxidants. PMID:17076804

Wigoda, Noa; Ben-Nissan, Gili; Granot, David; Schwartz, Amnon; Weiss, David

2006-12-01

291

Allelic differences in Medicago truncatula NIP/LATD mutants correlate with their encoded proteins’ transport activities in planta  

PubMed Central

Medicago truncatula NIP/LATD gene, required for symbiotic nitrogen fixing nodule and root architecture development, encodes a member of the NRT1(PTR) family that demonstrates high-affinity nitrate transport in Xenopus laevis oocytes. Of three Mtnip/latd mutant proteins, one retains high-affinity nitrate transport in oocytes, while the other two are nitrate-transport defective. To further examine the mutant proteins’ transport properties, the missense Mtnip/latd alleles were expressed in Arabidopsis thaliana chl1-5, resistant to the herbicide chlorate because of a deletion spanning the nitrate transporter AtNRT1.1(CHL1) gene. Mtnip-3 expression restored chlorate sensitivity in the Atchl1-5 mutant, similar to wild type MtNIP/LATD, while Mtnip-1 expression did not. The high-affinity nitrate transporter AtNRT2.1 gene was expressed in Mtnip-1 mutant roots; it did not complement, which could be caused by several factors. Together, these findings support the hypothesis that MtNIP/LATD may have another biochemical activity. PMID:23154505

Salehin, Mohammad; Huang, Ying-Sheng; Bagchi, Rammyani; Sherrier, D. Janine; Dickstein, Rebecca

2013-01-01

292

Mutations in the Arabidopsis Peroxisomal ABC Transporter COMATOSE Allow Differentiation between Multiple Functions In Planta: Insights from an Allelic Series  

PubMed Central

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

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

2009-01-01

293

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

NSDL National Science Digital Library

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

294

A quantitative synthesis of the medicinal ethnobotany of the Malinké of Mali and the Asháninka of Peru, with a new theoretical framework  

PubMed Central

Background Although ethnomedically and taxonomically guided searches for new medicinal plants can improve the percentage of plants found containing active compounds when compared to random sampling, ethnobotany has fulfilled little of its promise in the last few decades to deliver a bounty of new, laboratory-proven medicinal plants and compounds. It is quite difficult to test, isolate, and elucidate the structure and mechanism of compounds from the plethora of new medicinal plant uses described each year with limited laboratory time and resources and the high cost of clinical trials of new drug candidates. Methods A new quantitative theoretical framework of mathematical formulas called "relational efficacy" is proposed that should narrow down this search for new plant-derived medicines based on the hypothesis that closely related plants used to treat closely related diseases in distantly related cultures have a higher probability of being effective because they are more likely to be independent discoveries of similar plant compounds and disease mechanisms. A prerequisite to this hypothesis, the idea that empirical testing in traditional medicine will lead to choosing similar medicinal plants and therefore the medicinal flora of two distant cultures will prove to be more similar than their general flora, is tested using resampling statistics on cross-cultural field data of the plants used by the Malinké of Mali and the Asháninka of Peru to treat the diseases malaria, African sleeping sickness, Chagas' disease, leishmaniasis, diabetes, eczema, asthma, and uterine fibroids. Results In this case, the similarity of the medicinal floras is found to be significantly greater than the similarity of the general floras, but only when the diseases in question are grouped into the categories of parasitic and autoimmune diseases. Conclusion If the central theoretical framework of this hypothesis is shown to be true, it will allow the synthesis of medicinal plant information from around the world to pinpoint the species with the highest potential efficacy to take into the laboratory and analyze further, ultimately saving much field and laboratory time and resources. Spanish abstract Las búsquedas que utilizan la etnomedicina y la taxonomía para descubrir nuevas plantas medicinales, pueden aumentar la probabilidad de éxito de encontrar compuestos químicos activos en plantas, en comparación con las búsquedas aleatorias. A pesar de lo anterior, en las últimas décadas, la etnobotánica no ha cumplido con las expectativas de proveer numerosas plantas medicinales y químicos nuevos una vez examinados en el laboratorio. Cada año se describen una plétora de plantas medicinales y sus usos, sin embargo las limitaciones de tiempo y recursos en los laboratorios, unidos al alto coste de los ensayos clínicos de las drogas potenciales, hacen muy difícil probar, aislar, y elucidar la estructura y el mecanismo de los compuestos de estas plantas. Se propone un nuevo marco teórico cuantitativo cuyo fin es focalizar la búsqueda de nueva plantas medicinales. Este marco teórico está basado en la hipótesis que las plantas cercanamente relacionadas, usadas para tratar enfermedades cercanamente relacionadas en culturas distantemente relacionadas, tienen una eficacia potencial más alta, debido a que es más probable que estos hallazgos sean descubrimientos independientes de compuestos químicos similares. Parte de esta hipótesis, que las escogencias racionales se hacen para elegir plantas medicinales similares y que la flora medicinal de dos culturas distantes es más similar que su flora general, se probó usando métodos estadísticos de remuestreo con datos de campo de la comunidad Malinké de Malí y de la Asháninka de Perú, y las enfermedades de paludismo, enfermedad africana del sueño, enfermedad de Chagas, leishmania, diabetes, eczema, asma, y fibromas uterinos. Se encontró, en este caso, que

Bletter, Nathaniel

2007-01-01

295

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

Cancer.gov

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

296

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

PubMed Central

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

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

2013-01-01

297

Transient Co-Expression of Post-Transcriptional Gene Silencing Suppressors for Increased in Planta Expression of a Recombinant Anthrax Receptor Fusion Protein  

PubMed Central

Potential epidemics of infectious diseases and the constant threat of bioterrorism demand rapid, scalable, and cost-efficient manufacturing of therapeutic proteins. Molecular farming of tobacco plants provides an alternative for the recombinant production of therapeutics. We have developed a transient production platform that uses Agrobacterium infiltration of Nicotiana benthamiana plants to express a novel anthrax receptor decoy protein (immunoadhesin), CMG2-Fc. This chimeric fusion protein, designed to protect against the deadly anthrax toxins, is composed of the von Willebrand factor A (VWA) domain of human capillary morphogenesis 2 (CMG2), an effective anthrax toxin receptor, and the Fc region of human immunoglobulin G (IgG). We evaluated, in N. benthamiana intact plants and detached leaves, the expression of CMG2-Fc under the control of the constitutive CaMV 35S promoter, and the co-expression of CMG2-Fc with nine different viral suppressors of post-transcriptional gene silencing (PTGS): p1, p10, p19, p21, p24, p25, p38, 2b, and HCPro. Overall, transient CMG2-Fc expression was higher on intact plants than detached leaves. Maximum expression was observed with p1 co-expression at 3.5 days post-infiltration (DPI), with a level of 0.56 g CMG2-Fc per kg of leaf fresh weight and 1.5% of the total soluble protein, a ten-fold increase in expression when compared to absence of suppression. Co-expression with the p25 PTGS suppressor also significantly increased the CMG2-Fc expression level after just 3.5 DPI. PMID:21954339

Arzola, Lucas; Chen, Junxing; Rattanaporn, Kittipong; Maclean, James M.; McDonald, Karen A.

2011-01-01

298

The proline 160 in the selectivity filter of the Arabidopsis NO(3)(-)/H(+) exchanger AtCLCa is essential for nitrate accumulation in planta.  

PubMed

Nitrate, the major nitrogen source for plants, can be accumulated in the vacuole. Its transport across the vacuolar membrane is mediated by AtCLCa, an antiporter of the chloride channel (CLC) protein family. In contrast to other CLC family members, AtCLCa transports nitrate coupled to protons. Recently, the different behaviour towards nitrate of CLC proteins has been linked to the presence of a serine or proline in the selectivity filter motif GXGIP. By monitoring AtCLCa activity in its native environment, we show that if proline 160 in AtCLCa is changed to a serine (AtCLCa(P160S) ), the transporter loses its nitrate selectivity, but the anion proton exchange mechanism is unaffected. We also performed in vivo analyses in yeast and Arabidopsis. In contrast to native AtCLCa, expression of AtCLCa(P160S) does not complement either the ?ScCLC yeast mutant grown on nitrate or the nitrate under-accumulation phenotype of clca knockout plants. Our results confirm the significance of this amino acid in the conserved selectivity filter of CLC proteins and highlight the importance of the proline in AtCLCa for nitrate metabolism in Arabidopsis. PMID:20598093

Wege, Stefanie; Jossier, Mathieu; Filleur, Sophie; Thomine, Sébastien; Barbier-Brygoo, Hélène; Gambale, Franco; De Angeli, Alexis

2010-09-01

299

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

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

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

2004-01-01

300

SECONDARY METABOLITE PRODUCTION BY THE FUNGAL PATHOGEN EUTYPA LATA: ANALYSIS OF EXTRACTS FROM GRAPEVINE CULTURES AND DETECTION OF THOSE METABOLITES IN PLANTA  

Technology Transfer Automated Retrieval System (TEKTRAN)

Eutypa dieback of grapevines is caused by the fungal pathogen Eutypa lata and reduces vineyard longevity worldwide. Early detection could reduce losses due to this disease, so our aim was to identify acetylenic phenol metabolites of E. lata that could prove suitable as chemical markers in an early d...

301

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...

302

LAS CLASES SE IMPARTIRN EN EL AULA 057, PLANTA BAJA DEL EDIFICIO DEPARTAMENTAL, CAMPUS DE 2013 Horarios Mster en Gestin del Transporte y la Movilidad -Primer cuatrimestre  

E-print Network

VICÁLVARO 2013 Horarios Máster en Gestión del Transporte y la Movilidad - Primer cuatrimestre SEPTIEMBRE 16 sistemas de transporte Infraestructuras de la movilidad Jueves 19 Organización y financiación del transp transporte Infraestructuras de la movilidad Jueves 26 Organización y financiación del transp. Economía

Rey Juan Carlos, Universidad

303

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

Microsoft Academic Search

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

Eva Noemí Obledo-Vázquez; Norma Flores-Verduzco; Jesús Cervantes-Martínez; Centro de Investigación; Asistencia en Tecnología; Guadalajara Jalisco

2004-01-01

304

This manuscript has been published in Planta (January 12, 2007)1 DOI: 10.1007/s00425-006-0470-22  

E-print Network

exerts a positive effect19 on osmotic protection of fungal cells and favours fungal growth in plant of plant tissues.4 Metabolomic analysis, based on 13 C- and 31 P-NMR spectroscopy, was used to draw up the5 and mannitol were the predominant soluble carbon stores. During9 infection, a decline in sugars and amino acids

Paris-Sud XI, Université de

305

A Robust and Sensitive Synthetic Sensor to Monitor the Transcriptional Output of the Cytokinin Signaling Network in Planta1[C][W][OA  

PubMed Central

Cytokinins are classic plant hormones that orchestrate plant growth, development, and physiology. They affect gene expression in target cells by activating a multistep phosphorelay network. Type-B response regulators, acting as transcriptional activators, mediate the final step in the signaling cascade. Previously, we have introduced a synthetic reporter, Two Component signaling Sensor (TCS)::green fluorescent protein (GFP), which reflects the transcriptional activity of type-B response regulators. TCS::GFP was instrumental in uncovering roles of cytokinin and deepening our understanding of existing functions. However, TCS-mediated expression of reporters is weak in some developmental contexts where cytokinin signaling has a documented role, such as in the shoot apical meristem or in the vasculature of Arabidopsis (Arabidopsis thaliana). We also observed that GFP expression becomes rapidly silenced in TCS::GFP transgenic plants. Here, we present an improved version of the reporter, TCS new (TCSn), which, compared with TCS, is more sensitive to phosphorelay signaling in Arabidopsis and maize (Zea mays) cellular assays while retaining its specificity. Transgenic Arabidopsis TCSn::GFP plants exhibit strong and dynamic GFP expression patterns consistent with known cytokinin functions. In addition, GFP expression has been stable over generations, allowing for crosses with different genetic backgrounds. Thus, TCSn represents a significant improvement to report the transcriptional output profile of phosphorelay signaling networks in Arabidopsis, maize, and likely other plants that display common response regulator DNA-binding specificities. PMID:23355633

Zürcher, Evelyne; Tavor-Deslex, Deborah; Lituiev, Dmytro; Enkerli, Katalin; Tarr, Paul T.; Müller, Bruno

2013-01-01

306

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

SciTech Connect

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

Himmel, M.

2011-02-01

307

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

PubMed Central

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

Lesker, Till; Maiss, Edgar

2013-01-01

308

Species-specific ITS primers for the identification of Picoa juniperi and Picoa lefebvrei and using nested-PCR for detection of P. juniperi in planta.  

PubMed

Desert truffles, hypogeous Pezizales (Ascomycota), are difficult to identify due to evolutionary convergence of morphological characters among taxa that share a similar habitat and mode of spore dispersal. Also, during their symbiotic phase, these are barely distinguishable morphologically, and molecular probes are needed for their identification. We have developed a PCR-based method for the identification of Picoa juniperi and Picoa lefebvrei based on internal transcribed spacers of rDNA. Two PCR primers specific for P. lefebvrei (FLE/RLE) and two specific for P. juniperi (FJU/RJU) were designed. A collection of samples from different geographical areas representing diversity of these species were examined for unique regions of internal transcribed spacers 1, 2 and 5.8S gene of rDNA (ITS) compared to other closely related species. Annealing temperatures and extension times were optimized for each set of primers for maximum specificity and efficiency. They proved to be efficient to specifically detect the presence of P. juniperi and P. lefebvrei by PCR and neither set amplified purified DNA from other truffle species as well as some ascomycetous fungi. The partial small subunit of ribosomal DNA genes of P. juniperi were amplified with the genomic DNA extracted from Helianthemum ledifolium var. ledifolium roots by nested polymerase chain reaction (PCR) using the universal fungal primer pair ITS1/ITS4 and specific primer pair FTC/RTC, which was designed based on internal transcribed spacer 1, 2 and 5.8S gene of rDNA sequences of P juniperi. The nested-PCR was sensitive enough to re-amplify the direct-PCR product, resulting in a DNA fragment of 426 bp. The efficacy of nested-PCR showed that it could re-amplify the direct-PCR product and detect 200 fg genomic DNA. PMID:24065525

Jamali, Samad; Banihashemi, Zia

2013-10-01

309

Limited impact of abiotic stress on surfactin production in planta and on disease resistance induced by Bacillus amyloliquefaciens S499 in tomato and bean.  

PubMed

Understanding how temperature and water stress affect protocooperation between plants and beneficial rhizobacteria may enhance the efficacy of biocontrol agents in reducing plant diseases. However, little is known about the impact of these factors on biocontrol mechanisms and effectiveness, especially when provided by beneficial Bacillus spp. This work aimed to evaluate the influence of low/high temperature combined with a normal and reduced water regime on the interaction between Bacillus amyloliquefaciens strain S499 and plants, resulting in the induction of systemic resistance (ISR). A reduction in ISR level was observed when plants were subjected to stress before bacterization; however, root treatment with S499 prior to stress exposure attenuated this negative effect. Colonization of S499 during exposure to temperature/water stress allowed the three crops to conserve their overall ability to mount defense lines to a similar degree at all the temperatures tested. Further investigation revealed that relative production of surfactin by S499 was clearly enhanced at low temperature, making it possible to counter-balance the negative effect on traits associated with rhizosphere fitness (colonization, motility, and biofilm formation) observed in vitro in cold conditions. This work thus represents a first step in deciphering the effect of high/low temperatures and/or drought on key plant-microorganism interactions culminating in ISR. PMID:23829709

Pertot, Ilaria; Puopolo, Gerardo; Hosni, Taha; Pedrotti, Lorenzo; Jourdan, Emmanuel; Ongena, Marc

2013-12-01

310

Characterisation of a new reporter system allowing high throughput in planta screening for recombination events before and after controlled DNA double strand break induction.  

PubMed

DNA double strand breaks (DSBs) are created either by DNA damaging reagents or in a programmed manner, for example during meiosis. Homologous recombination (HR) can be used to repair DSBs, a process vital both for cell survival and for genetic rearrangement during meiosis. In order to easily quantify this mechanism, a new HR reporter gene that is suitable for the detection of rare recombination events in high-throughput screens was developed in Arabidopsis thaliana. This reporter, pPNP, is composed of two mutated Pat genes and has also one restriction site for the meganuclease I-SceI. A functional Pat gene can be reconstituted by an HR event giving plants which are resistant to the herbicide glufosinate. The basal frequency of intra-chromosomal recombination is very low (10(-5)) and can be strongly increased by the expression of I-SceI which creates a DSB. Expression of I-SceI under the control of the 35S CaMV promoter dramatically increases HR frequency (10,000 fold); however the measured recombinant events are in majority somatic. In contrast only germinal recombination events were measured when the meganuclease was expressed from a floral-specific promoter. Finally, the reporter was used to test a dexamethasone inducible I-SceI which could produce up to 200x more HR events after induction. This novel inducible I-SceI should be useful in fundamental studies of the mechanism of repair of DSBs and for biotechnological applications. PMID:19136269

Wehrkamp-Richter, Sophie; Degroote, Fabienne; Laffaire, Jean-Baptiste; Paul, Wyatt; Perez, Pascual; Picard, Georges

2009-04-01

311

In planta biocatalysis screen of P450s identifies 8-methoxypsoralen as a substrate for the CYP82C subfamily, yielding original chemical structures.  

PubMed

An in vivo plant screen that allows for the analysis of exogenously applied substrates against transgenic Arabidopsis lines overexpressing individual cytochrome P450s has been developed. By deploying this screen with a subset of 91 P450s, we have identified an original substrate for members of the CYP82C subfamily. The therapeutic compound 8-methoxypsoralen was hydroxylated by plants overexpressing CYP82C2 or CYP82C4, forming 5-hydroxy-8-methoxypsoralen. Additionally, plants further modified this product to create a glycosylated compound, likely the compound 5-O-beta-D-glucopyranosyl-8-methoxypsoralen. The discovery of adducts of therapeutic compounds demonstrates the potential of this biocatalysis screening approach to create compounds that may be of pharmacological value. Additionally, this platform provides a means to expand the general knowledge base of P450 enzyme/substrate combinations and may provide valuable tools for a vast array of biocatalytic and bioremediation processes. PMID:18291319

Kruse, Tanya; Ho, Kwongling; Yoo, Hye-Dong; Johnson, Thomas; Hippely, Matt; Park, Joon-Hyun; Flavell, Richard; Bobzin, Steve

2008-02-01

312

A GFP-based assay to quantify the impact of effectors on the ex planta development of the slowly growing barley pathogen Rhynchosporium commune.  

PubMed

A growth assay was established for the barley pathogen Rhynchosporium commune with EGFP-tagged fungal mutants. This assay was used to study the effect of four antibiotics (hygromycin B, nourseothricin, kanamycin, phleomycin) and a herbicide (phosphinothricin) on fungal development. Fitting the growth curves to the modified Gompertz model allowed calculating growth parameters, such as lag periods of fungal colony formation and mycelial growth rates as well as EC(50) values. Except kanamycin all compounds were efficient inhibitors so that the corresponding resistance-conferring genes can be used as markers for selection of fungal transformation-based mutants. In addition the assay was used to quantify the inhibitory activity of a barley secondary metabolite, the indole alkaloid gramine. PMID:21498556

Kirsten, S; Siersleben, S; Knogge, W

2011-01-01

313

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...

314

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

ERIC Educational Resources Information Center

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

Macgillivray, Ian K.

2006-01-01

315

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

E-print Network

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

Paris-Sud XI, Université de

316

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

ERIC Educational Resources Information Center

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

Quezeda, Dina Alarcon

1992-01-01

317

Esercizio 6 Realizzare una classe astratta per le Figure piane e due  

E-print Network

Quadrato e la sottoclasse Rettangolo. #12;public abstract class FiguraPiana2{ private double base; public FiguraPiana2(double b){ base=b;} public abstract double Perimetro(); public abstract double Area(); public double getBase(){ return(base);} } Soluzione esercizio 6 #12;Classe Quadrato che implementa Figura

Giambruno, Laura

318

DESARROLLO DE UN SISTEMA SENSORIAL PARA LA ASISTENCIA A LA CONDUCCIÓN DE UNA SILLA DE RUEDAS  

Microsoft Academic Search

The University of Los Andes and the group of robotics specifically come working already does some time on a first prototype from wheelchair, with which great experience in subjects has been acquired such as: construction and control of movable platforms, signal processing sent by systems sonars, atmosphere recognition, navigation and voice recognition, subjects that reunited serve as a solid base

Ingeniería Electrónica; Jaime Andrés; Alain Gautier

319

INSTRUMENTOS DE ATENCIÓN DE LA POBLACIÓN DESPLAZADA EN COLOMBIA: UNA DISTRIBUCIÓN DESIGUAL DE LAS RESPONSABILIDADES MUNICIPALES  

Microsoft Academic Search

La población desplazada en Colombia asciende a cerca de 1.8 millones de personas y equivale al 4.3 por ciento de la población. La legislación colombiana para la población desplazada ha generado responsabilidades diferenciadas entre los gobiernos nacionales y locales. La responsabilidad administrativa, y no necesariamente financiera, de provisión de atención a la población desplazada recae sobre los municipios quienes enfrentan

Ana María Ibáñez; Carlos Eduardo Vélez

2003-01-01

320

APLICACIÓN DE UNA ZEOLITA PRE-TRATADA PARA MINIMIZAR EL IMPACTO DE LA CONTAMINACION CON ARSENICO  

Microsoft Academic Search

Se han reconocido a las zeolitas y a los metales o compuestos metálicos como adsorbentes selectivos para cationes y aniones de soluciones acuosas para minimizar el impacto de algunos contaminantes en el medio ambiente. Los óxidos como MgO, CaO y ZnO, pueden dispersarse en las cavidades de las zeolitas e incrementar sus propiedades. Actualmente existen diversas formas de aplicación como,

FLERIDA A. MEJÍA ZAMUDIO; JESUS L. VALENZUELA GARCÍA

2009-01-01

321

Manejo anestésico en cesárea electiva de una gestante con enfermedad de Beriberi  

Microsoft Academic Search

Summary Beriberi is a disease caused by thiamine (vitamin B1) deficiency. Peripheral and central nerve involvement causes psychosis and memory loss as well as cardiocirculatory effects. We report the case of a 35-year-old woman 8 weeks pregnant who came to the emergency department after bouts of nausea and vomiting over a period of 6 days, with intolerance of both solids

M. V. Jamart; S. Gil; M. Raynard; G. Gascón; R. Borràs; A. Miranda

322

Valoración de Riesgo Anestésico Mora-México: Una Propuesta Razonada en Evidencias  

Microsoft Academic Search

Estimation of the pre anesthesia factors that may be important to assess the anesthesia risk is a hard task for the anesthesiologist. This new scale named Mora-Mexico anesthesia risk evaluation is an idea based on my own experience and the information on this issue. A rational combination of 10 factors: age, weight, hyper sensibility to drugs, number of drugs used

J. Daniel Mora García; Artículo Especial

323

Una nueva especie de Weltrichia (Bennettitales) del Jurásico Medio de la Formación Tecomazuchil (Oaxaca, México)  

Microsoft Academic Search

A new species of Weltrichia (Williamsoniaceae: Bennettitales) is described from the Middle Jurassic of Oaxaca. The specimens come from the Tecomazuchil Formation in the Ayuquila region, at the border between the Oaxaca and Puebla states. Fossils are preserved as impressions and compressions, in a fine-grained sublitharenite sequence deposited in a fluvial environment. Preserved diagnostic characters include: large size; a cup-shaped

Alicia Silva Pineda; María Patricia Velasco de León; Javier Arellano Gil; Juan Ramón Grimaldo

324

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

Microsoft Academic Search

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

Giacomo Tripodi

1967-01-01

325

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

PubMed Central

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

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

2011-01-01

326

El Renacimiento de la Sociología Consecuencias epistemológicas de las metodologías informáticas para una nueva sociología contemporánea  

Microsoft Academic Search

The potential of the computer methodologies for the sociology becomes more and more evident, as well as it is more and more evident that the same sociology is more and more immerse in a society of the knowledge whose main fuel is the information and its reflexive structuring and communicative. The investigation methodologies and production of sociological knowledge linked to

Gilson Lima

327

La incidencia redistributiva del gasto público en educación : una visión empírica al caso español  

Microsoft Academic Search

Se abordan los aspectos teóricos más relevantes sobre la intervención pública en la educación, destacando especialmente la consecución de fines redistributivos. Se revisan los distintos enfoques teóricos sobre la incidencia del gasto público y se analizan los resultados más relevantes que se han obtenido de la evidencia empírica disponible, tanto en el análisis comparado, como en el caso español.

Carmen Pérez Esparrels; Alfonso Utrilla de la Hoz

1996-01-01

328

Forme strutturali e organizzative nella filiera vitivinicola di qualità: una caratterizzazione regionale  

Microsoft Academic Search

The quality of the processed product and the strategies on the final market strongly depends on the types of vertical relationship among the supply chain participants, on the types of economic agents (vine growers, wineries, bottlers), on their structural and organizational characteristics. We provide an original study of the wine processing sector by taking into account the role of the

Giulio Malorgio; Cristina Grazia

2010-01-01

329

Trastorno obsesivo-compulsivo en niños y adolescentes: Una actualización. Segunda parte  

Microsoft Academic Search

SUMMARY During the last years obsessive-compulsive disorder (OCD) has been reported with increased prevalence in pediatric population; this is due to the development of more specific assessment methods. This evolution in the evaluation tools has given rise to the possibility of characterizing OCD presentation in children and adolescents. In childhood, OCD is a chronic and distressing disorder that can lead

Luis Alberto Vargas Álvarez; Lino Palacios Cruz; Guillermo González Thompson

2008-01-01

330

Trastorno obsesivo compulsivo en niños y adolescentes: una actualización. Primera parte  

Microsoft Academic Search

The obsessive-compulsive disorder (OCD) is being reported now with increased prevalence in pediatric population than in the past, associated with the development of more specific assessment methods. This evolution has opened the possibility to characterize OCD presentation in children and adolescents. OCD in childhood is a chronic and distressing disorder that can lead to severe impairments in social, academic and

Luis Alberto Vargas Álvarez; Lino Palacios Cruz; Guillermo González Thompson

331

UNA NUEVA ESPECIE DE PROCTOPORUS (SAURIA: GYMNOPHTHALMIDAE) DE LOS ANDES DE VENEZUELA  

Microsoft Academic Search

A new species is described of lizard of the genus Proctoporus, belonging to the P. luctuosus group and closely related whith P. achlyens and P. shrevei, from the Cordillera de la Costa de Venezuela and Trinidad Island respectively. This species, an inhabitant in the terminal branches of the Cordillera de Mérida South of the Depresión de Barquisimeto, is the first

Juan Elías GARCIA-PEREZ; Enrique Elías YUSTIZ

332

IOS Effetto della rimozione precoce delle membrane per una rigenerazione ossea soddisfacente  

Microsoft Academic Search

Effect of an early removal of membranes for a satisfactory bone regeneration ? The Authors evaluate the effect of an early removal (after 4 weeks) of PTFE-membranes, covering Bio-Oss® and Fisiograft® used to fill the defect in 8 patients, on the bone formed around titanium implants placed into immediate extraction sockets. Histomorphometry (TBV) was applied on biopsies, performed 4\\/5 months

G. C. LEGHISSA; A. R. BOTTICELLI; D. ZAFFE

333

Tengo una Bomba: The Paralinguistic and Linguistic Conventions of the Oral Practice Chismeando.  

ERIC Educational Resources Information Center

This article offers a linguistic and paralinguistic explication of the oral practice of chismeando (gossiping) as engaged in by a group of women from the Dominican Republic. A culture-specific study of the structuring resources by which the participants construct, maintain, and/or modify their in-group identities in everyday oral practice is…

Hall, Joan Kelly

1993-01-01

334

UNA APROXIMACI ÓN A LOS ACUERDOS AMBIENTALES COMO MECANISMO ALTERNATIVO DE POLÍTICA AMBIENTAL  

Microsoft Academic Search

ABSTRACT RESUMEN INTRODUCCIÓN 1. ASPECTOS DE FILOSOFÍA POLÍTICA DE LA POLÍTICA AMBIENTAL DE LOS ACUERDOS VOLUNTARIOS 2. QUÉ SE ENTIENDE POR ACUERDOS VOLUNTARIOS, QUÉ SON LOS ACUERDOS AMBIENTALES, CUÁLES SON SUS IMPLICACIONES ECONÓMICAS Y CUÁL ES SU TIPOLOGÍA 2.1. Acuerdos voluntarios y sus implicaciones económicas 2.1.1. Qué son los acuerdos ambientales. 2.1.2. Análisis económico de los acuerdos ambientales. 2.1.2.1. Acuerdos

Pablo Márquez Escobar

335

Movilidad de rentas y salarios desde una perspectiva de género: el papel de la educación  

Microsoft Academic Search

El presente trabajo comienza revisando los fundamentos de las teorías de demanda de educación como bien de inversión a nivel microeconómico, indicando la metodología y los resultados de algunos de los principales estudios aplicados realizados en España. Dichos estudios se han basado en el análisis de los rendimientos educativos. En nuestro trabajo estudiaremos también, y para el caso español, cuáles

Laura de Pablos Escobar; María Gil Izquierdo

2006-01-01

336

Borders and Identity: A Resource Guide for Teachers = Identidad y Fronteras: Una Guia para Maestros.  

ERIC Educational Resources Information Center

The materials in this resource guide include a four-part video, a poster-size cultural map with additional exercises, and the five sections of this guide. The unit, presented in English and Spanish, intends to introduce students to the peoples and cultures of the U.S.-Mexico border, to explore the concept of borders in their own communities, to…

Belauus, Betty; Botein, Emily; Cadaval, Olivia

337

Laccesso alla base di una torre quadrata (1) obbligava gli asse-  

E-print Network

decades of the 3rd century BC; some of the ceramics found there were also for votive use (lamps and small. In the first courtyard (2) a stair on the left led to the upper floor; in the room in the back a reservoir (3 be seen along the small road; only the back wall is preserved. It was destroyed by a fire in the first

Abbondandolo, Alberto

338

Historia de vidas de profesoras de ciencias: Hacia una ensenanza cientifica de calidad  

NASA Astrophysics Data System (ADS)

The purpose of this research was to capture the memories, practices, thoughts and philosophies of education that four experienced Science teachers have accumulated through the years. The life story qualitative research design was used in order to collect more meaningful information from the participants amenable to in depth analysis and interpretation. The life stories interviews were conducted using an interview protocol especially designed for the study. The interviews were recorded and transcribed. The questions that guided this research are: 1. What are the meanings that science teachers give to their educational practices? 2. How did the life experiences of the participants contribute to their success as science teachers? 3. How did the participants' educational practices change and evolve over time? 4. What does teaching science mean in the life of the participants? 5. Which reflections arise from the work of the participants that impact the teaching of science? 6. What are the participants' conceptions about teachers' professional development? 7. What are the participants' contributions to the field of scientific education? Wolcott's (1994) DAI analytical model was used for the analysis of the information and the narratives were written following the three dimensions of the model: description, analysis and interpretation. According to the life stories of the participants, being a teacher requires more than teaching the content. To be a successful and an exemplary science teacher, they have to live the teaching vocation, with dedication, passion, commitment and love for teaching, for students and science; teachers have to give their best for the students, even if it means making personal sacrifices; they should keep updated in knowledge (content) and in educational innovations (strategies); emphasizing both the theoretical and the practical aspects in the field of science, and being an inspirational guide for students.

Vega Osorio, Melba

339

La ciudad caleidoscópica. Coordinación espacial y convención urbana: una perspectiva heterodoxa para la economía urbana  

Microsoft Academic Search

Este libro es un cásico instantáneo que merece un lugar de honor junto a los clásicos fundacionales urbanos de Harvey, Castells, y Logan y Molotch. Lo que estos autores hacen por Marx, la información digital y las estructuras de poder político.El autor explica la importancia de la incertidumbre radical, las creencias convencionales, las decisiones cruciales y los circuitos monetarios en

Pedro Abramo

340

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

SciTech Connect

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

Not Available

2007-09-01

341

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

SciTech Connect

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

Not Available

2005-10-01

342

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

SciTech Connect

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

Not Available

2007-09-01

343

EL TURISMO RURAL: UNA DE LAS ALTERNATIVAS AL DESARROLLO RURAL EN LA SERRANÍA DE CUENCA  

Microsoft Academic Search

SUMMARY Rural tourism has turned in the last years into the engine that generates additional reve- nues to the obtained ones in the primary sector. It is the way in order that the Serranía of Cuenca goes out of its stagnation and joins to the progress, but only that, a possible way. The tourism never has to be, of exclusive

Ana Eulalia; Aparicio Guerrero

2004-01-01

344

UNA APROXIMACIÓN DESDE LA ANTROPOLOGÍA A LA HISTORIA DEL TURISMO PORTUENSE COMO ESTRATEGIA DE DESARROLLO LOCAL  

Microsoft Academic Search

Based on the cognitive distinction between tourist and native spaces, the article establishes the anthropological construction of tourism space. Since the early times of tourism in El Puerto as a seaside resort, the beach was both a healthy and a ludic space. The article analyses the causal relation among class society, leisure and health and the histocial conection between tourism

Antonio Miguel; Nogués Pedregal

1999-01-01

345

UNA PROPUESTA DE TURISMO SOSTENIBLE PARA EL MUNICIPIO DE CALDAS DE REIS (PONTEVEDRA)  

Microsoft Academic Search

Tourism is an economic activity of increasing importance at local level in terms of income and employment. This activity becomes as well the engine behind the development of other economic sectors such as agriculture, fisheries, crafts, housing, transport, etc. However, tourism may become a factor leading to imbalances and even have a negative impact on the territory. Thus, a serious

Xulio X. Pardellas de Blas; Carmen Padín Fabeiro

346

TURISMO Y DESARROLLO: DOS CONCEPTOS REVISITADOS Y UNA PRETENDIDA RELACIÓN CAUSAL  

Microsoft Academic Search

El autor del breve artículo que acabo de transcribir es Eduardo Fayos-Solá, sin duda uno de los turisperitos españoles más conocidos internacionalmente. Doctor en economía por la Universidad de Valencia, ha realizado estudios en universidades de USA (Minnesota) Reino Unido (Oxford) y Suecia (Estocolmo). Además de ser profesor titular de Economía Aplicada en la Universidad de Valencia, ha sido profesor

Francisco Muñoz de Escalona

2011-01-01

347

La concentración estacional en las regiones españolas desde una perspectiva de la oferta turística  

Microsoft Academic Search

RESUMEN La estacionalidad es un fenómeno muy singular en el turismo y es de gran relevancia para los responsables de las organizaciones y destinos turísticos. En el presente trabajo tratamos de analizar la estacionalidad de la oferta turística en España y, especialmente, en las Comunidades Autónomas. Tratamos de comprobar los niveles de estacionalidad de la oferta turística en función de

Jesús Manuel López Bonilla; Luis Miguel López Bonilla

2006-01-01

348

TURISMO IDIOMÁTICO EN EL MEDIO RURAL: UNA PROPUESTA PARA SU DESARROLLO Y COMERCIALIZACIÓN  

Microsoft Academic Search

Miles de personas se desplazan a España cada año para sumergirse en su lengua y su cultura. Puesto que esta actividad utiliza los servicios propios del turismo tradicional es considerada un tipo de turismo denominado turismo de idiomas o turismo idiomático. En España existen destinos especializados fuertemente consolidados, frecuentemente urbanos y relacionados con universidades y zonas costeras. Los cambios en

Ana María Campón Cerro; José Manuel Hernández Mogollón

2011-01-01

349

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

Microsoft Academic Search

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

Ainhoa Aguirregoitia Martínez

2011-01-01

350

Modelo gravitatorio y turismo: Una aplicación a los flujos monetarios interregionales del sector Turismo en España  

Microsoft Academic Search

RESUMEN: Este trabajo analiza los flujos monetarios domésticos del sector Turismo en España mediante diferentes especificaciones del modelo gravitatorio, aplicados a tres estimaciones alternativas de los flujos monetarios bilaterales. Los modelos han permitido identificar las principales variables que actúan como factores de atracción de los flujos interregionales, obteniendo elasticidades diferentes para la variable distancia a las observadas en los flujos

Tamara de la Mata; Carlos Llano

2010-01-01

351

La cultura regionalista en España, Francia y Alemania. Una perspectiva comparada (1890-1937)  

Microsoft Academic Search

Abstract: The creation of a transnational regionalist culture from about\\u000a1890 played a crucial role in the construction of more clearly delimited\\u000aregional identities. An analysis of regionalism in painting, architecture\\u000aand international exhibitions in Spain, France and Germany shows\\u000athat regionalism was the product of a specific phase in European history:\\u000athe transition from the nineteenth century society led

H. J. Storm

2011-01-01

352

Datos epidemiológicos del trastorno por déficit de atención con hiperactividad en una muestra de niños marabinos  

Microsoft Academic Search

Summary. Aims. This study reports the findings of a research project aimed at determining the rate of prevalence of attention deficit hyperactivity disorder (ADHD) in school-aged children. Patients and methods. Different behavioural and cognitive measures were administered to a sample of children between 3 and 13 years of age obtained by means of a multistage sampling procedure that was stratified

J. A. Peña

353

Desarrollo de una intervención grupal para la prevención del VIH en parejas heterosexuales1  

PubMed Central

HIV preventive efforts with heterosexual couples are almost nonexistent. We designed a group intervention based on the Information-Motivation-Behavioral Skills model with the aim of increasing male condom use and promoting the practice of mutual masturbation as a safer sex alternative. We carried out a pilot study with four couples to evaluate the feasibility of the intervention and the aspects of content and format that needed to be modified. Findings reflect that participants were very satisfied with the intervention and they found it entertaining and innovative. They were very comfortable with its format, as well as with the activities. The findings confirm the feasibility of this intervention and the need to direct preventive efforts to this population. PMID:23847716

Pérez-Jiménez, David; Escabí Montalvo, Aracelis; del Carmen Cabrera Aponte, María

2012-01-01

354

Y si el universo fuera un gran Si la luz es una onda,  

E-print Network

ACEPTABLE LA EXISTENCIA DE UN ETER? · De acuerdo a la teoría general de la relatividad el espacio esta cargado de cualidades físicas ; en este contexto debe existir un "éter". De acuerdo a la teoría general de la relatividad un espacio sin éter es inconcebible. A. Einstein, Sidelights on Relativity, 1922, pag

Mejía-Monasterio, Carlos

355

L'utilit\\`a di una teoria inutile-Crittografia, firma digitale e teoria dei numeri  

E-print Network

The theory of numbers was supposed to be the less useful branch of mathematics. At the same time, cryptography was thought to be a military or a diplomatic issue. In this note we show how the two concepts are today strictly related and how this link affects our daily activities.

Esposito, Alfredo

2011-01-01

356

Exploración del Sistema Solar -- Una mirada hacia el futuro - Duration: 0:30.  

NASA Video Gallery

¿Piensas que ya sabemos todo acerca de nuestro sistema solar? La realidad es que apenas hemos comenzado con lo que hay para conocer. Únete a la NASA, en el envío de misiones a los confines del sist...

357

Geografía en red a comienzos del tercer milenio: para una ciencia solidaria y en colaboración  

Microsoft Academic Search

Lo cambios que ha experimentado Internet con la generalización de lo que se conoce como la Web 2 han sido muy profundos. Los usuarios no son solo sujetos receptivos, no se limitan a consultar la información disponible sino que participan activamente también en la introducción de datos, en la creación y modificación de los contenidos de la red. Permite y

Horacio Capel Sáez

2010-01-01

358

GOBERNABILIDAD, COMUNICACIÓN Y EXCLUSIONES SOCIALES EN AMÉRICA LATINA. UNA AGENDA PARA  

Microsoft Academic Search

This work paper has as objective to analyze the problem of the governability crisis of democracies in Latin America, from the perspective of the communication. Part of a theoretical dissertation that approaches, on one hand, the roll of the communication research in the resolution of the crisis of governability and by the other, in the paper of the communication as

Revista ORBIS; Ciencias Humanas; Migdalia Pineda de Alcázar

2007-01-01

359

Una guia para los padres a la educacion preescolar (A Parent's Guide to Preschool).  

ERIC Educational Resources Information Center

This booklet, in Spanish- and Japanese-language versions, offers parents guidance on how to partner with teachers to help their children acquire the skills, attitudes, and habits to do well in school and throughout life. The booklet begins with a description of how preschool children learn, and continues with a discussion of the goals of the…

Dodge, Diane Trister; Phinney, Joanna

360

Inmigrantes ucranianos en España. Una aproximación a las pautas de movilidad internacional  

Microsoft Academic Search

Desde principios de los años noventa las pautas de movilidad internacional de los inmigrantes ucranianos en Europa Central y Occidental se caracterizan por su temporalidad, circularidad e irregularidad. Partiendo de este supuesto se examinan en este artículo los patrones de movilidad de los ucranianos inmigrados a España. Como principales categorías de descripción se utilizan los indicadores de temporalidad de desplazamiento,

Renáta Hosnedlová; Mikolaj Stanek

2010-01-01

361

Título: LA MOVILIDAD DE ESTUDIANTES. Una visión sociológica de los estudiantes  

Microsoft Academic Search

Summary: It is analyzed the importance of student's mobility at the present time, as much from the academic perspective as from the touristic one ,for the young people that goes to another place to study and for the city and the culture that welcomes them. There are multiple advantages for everyone and an added value for the present society, because

Remedios Castillo; Remedios Castillo Pérez

362

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

ERIC Educational Resources Information Center

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

Cabello, Victor; And Others

363

Il volto della Luna da Plutarco a Newton. Storia di una teoria ellenistica della gravità  

NASA Astrophysics Data System (ADS)

In his dialogue "De Facie quae in Orbe Lunae apparet", Plutarch includes a discussion on a non-Aristotelian theory of gravity. I describe how this theory could be developed during the Hellenistic period and its influence on the cosmological debate along the centuries until the beginning of modern science. (Text in Italian)

Cappi, Alberto

2013-03-01

364

El protocolo de Julián Bravo (1599): Primer contrato de una agrupación teatral en América  

E-print Network

decisiva mente en la vida y gusto de los españoles ya asentados en tierras americanas; el teatro, a la sazón tan popular en España, se iba convirtiendo en espectáculo favorito de América.2 Es precisamente el dictamen del 2 de mayo de 1598, que prohibe... y espa-7 cio de tres años que corren E se quen-/tan desde oy dicho dia para Repre-/ ssentar comedias assi En la/ Ciudad de los reyes como En/ Las demás partes a Donde/ Nos par[ecier]e combenir La/ qual d[ic]ha compañia hazemos/ (folio 250) con las...

Betancourt, Helia

1986-04-01

365

La revista Anales de Psicología desde una perspectiva de redes sociales  

Microsoft Academic Search

Title: Anales de Psicologia journal from a social networks framework. Abstract: This paper shows the results obtained on the analysis of the journal Anales de Psicología. In this article, authors analyze the collaboration between authors, institutions and countries for this journal. This collabo- rational analysis is made on the basis of the Social Network Analysis (SNA) with the software Pajek

María Peñaranda-Ortega; Elena Quiñones-Vidal; Julia Osca-Lluch

2009-01-01

366

PREVENCIÓN DEL VIH/SIDA EN LOS CIRCUITOS DE LEVANTE HSH: UNA ASIGNATURA PENDIENTE1  

PubMed Central

Resumen A partir de un relevamiento de tipo etnográfico, se describen lugares de encuentro de HSH en la Ciudad de Buenos Aires y sus prácticas sexuales. El reconocimiento de tales espacios, así como las características que asumen en ellos los encuentros sexuales entre los HSH, plantean obstáculos específicos en la adopción de comportamientos preventivos y, asimismo, generan nuevos desafíos para las actividades de prevención. Se plantean las dificultades y debates conceptuales que la misma categoría presenta, y sus consecuencias en el abordaje preventivo y teórico-metodológico para las ciencias sociales. Además, se proponen nuevos interrogantes acerca de los alcances y las limitaciones del modelo preventivo del VIH/Sida para HSH. PMID:21874154

Barreda, Victoria; Carballo-Dieguez, Alex; Marone, Rubén; Balán, Iván; Pando, María Ángeles; Ávila, María Mercedes

2011-01-01

367

Preparado como una iniciativa de NARSTO, esta evaluacin de Ozono (O3  

E-print Network

dependen de herramientas científicas similares (p. ej. redes de monitoreo y modelos) y están mutuamente medidas de mitigación son sociales NARSTO EVALUACI�N DE OZONO RESUMEN EJECUTIVO La Evaluación de Ozono de

368

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

Microsoft Academic Search

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

Itxaso González-Ortega; Enrique Echeburúa; Paz de Corral

2008-01-01

369

LA INTERVENCIÓN PSICO-ORGANIZACIONAL EN LA EMPRESA. UNA REFLEXIÓN EPISTEMOLÓGICA, TEÓRICA, METODOLÓGICA Y PRÁCTICA  

Microsoft Academic Search

El estudio de las organizaciones laborales es un tema de gran relevancia para las ciencias psicológicas y en especial para la psicología de las organizaciones, debido al valor que le imprime no solo al profesional de la psicología sino también al propio sujeto organizacional, en el establecimiento de sus múltiples relaciones con sus semejantes y el medio en el cual

Diana Rosa Montero Tamayo; Leonel Céspedes Tamayo

2012-01-01

370

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

E-print Network

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

Tolentino, Adriana

2009-12-10

371

La Promozione della salute on line: una rassegna delle risorse e dei metodi  

Microsoft Academic Search

Summary: The paper analyses the questions of resources available on line for the organisation and development of health promotion (hp), and the problem of hp methodologies involving the use of ICT (Information and Communication Technologies). Examining the distribution and content of the main sites in English and Italian treating hp, the paper underline the vitality of the international level and

Marco Ingrosso

372

Formulación de una Pasta Gelificada a Partir del Descarte de Arándanos (Vaccinium corymbosum)  

Microsoft Academic Search

A study was developed to formulate a low calorie gelling paste that allows giving aggregate value to discarding blueberries. Eight formulations were done after the characterization of the fruit that shows a high proportion of calcium\\/pectin, of great importance in the gelation capacity. The results show three formulations without significant differences in their shelf life of around forty days, From

Rosemarie Stückrath; Guillermo R. Petzold

2007-01-01

373

Una aproximación a los condicionantes de la elección de vivienda secundaria  

Microsoft Academic Search

Este trabajo presenta un análisis sobre la demanda de vivienda secundaria en España a nivel microeconómico. Utilizando modelos de respuesta cualitativa, logit multinomial anidado y secuencial, se pretende determinar cuáles son los factores sociodemográficos y económicos que tiene en cuenta un hogar para elegir entre disponer o no de vivienda secundaria, y para decidir su tipo de vivienda (unifamiliar o

M. C. COLOM ANDRÉS; M. C. MOLÉS MACHÍ

1999-01-01

374

Seguridad alimentaria instucional y una aplicación a México en el decenio de los ochenta  

Microsoft Academic Search

Modern food security addresses both food supply and the ability of an individual to acquire it. It therefore requires an institutional approach. This paper develops an analytical framework aimed at transforming these principles into operational concepts. It considers three dimensions: National-macroeconomic, microeconomic and dynamics. They should be combined in order to assess who goes hungry and why. The answers are

Sergio A. Luna

1997-01-01

375

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

ERIC Educational Resources Information Center

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

Estepa, A.; And Others

1992-01-01

376

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

ERIC Educational Resources Information Center

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

Galarza, Ernesto

377

Preparando a los futuros maestros contra el racismo: una experiencia formativa en la Universidad de Almería  

Microsoft Academic Search

The arrival of a large number of immigrants at Spanish schools has turned classrooms into multicultural spaces. This is the reason why prospective teachers must receive appropriate training in cultural diversity. This paper presents a detailed study of the concept of racism as perceived by a group of prospective teachers who took the course on \\

Rosario Isabel; HERRADA VALVERDE; Rosario Isabel Herrada Valverde; Carretera de Sacramento

2008-01-01

378

Cambie su cabeza por una importante: La ironía metafórica en Benito Fernández de Elena Garro  

E-print Network

puesto de cabezas humanas y el protagonista no tiene cabeza. Sabemos que la humanidad ha usado la cabeza-cara como elemento cultural, psicológico y social.2 Debido a la importancia del proceso genético social, las civilizaciones humanas han utilizado... influencia del cristianismo en la inhibición y castración de los individuos. La farsa o el caos parecen ser los medios adecuados para tratar este tema en la cultura mexicana, y por ende, en la civilización occidental: VICTORIA: No sabía yo que vendieran...

Rosas Lopá tegui, Patricia; Reed, James Casey

1998-10-01

379

FUNDAMENTOS DE UNA POSIBLE ACCIÓN BENEFICIOSA DE LA Spirulina platensis EN LAS NEUROPATÍAS PERIFÉRICAS  

Microsoft Academic Search

Summary Spirulina platensis is a green-blue microalga known by its high nutritional value and considered as one of the most complete natural sources of proteins, vitamins, minerals and other nutrients. The present paper analyzes the potential of this alga in the prevention and treatment of neuropathies on the basis of its main constituents and of the different causes of these

Nora Sánchez; Margarita Bu; Héctor Pérez-Saad

380

MEMORIA Y REALIDAD: UNA INVESTIGACIÓN CUALITATIVA SOBRE EL RECUERDO DE LA FICCIÓN TELEVISIVA  

Microsoft Academic Search

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

Juan Menor Sendra; Carlos Camino del Molino

381

Prevalencia de diabetes mellitus y factores de riesgo relacionados en una población urbana  

Microsoft Academic Search

Prevalence of diabetes mellitus and related risk factors in an urban population SUMMARY Objective. To know the prevalence of diabetes mellitus and its risk factors in the population of an urban district of Lima city. Material and methods. It was carried out a descriptive, clustered and random- ized study. The sample size was 213 subjects older than 15 year-old. The

Freddy García; José Solís; Jorge Calderón; Edith Luque; Luis Neyra; Helard Manrique; Raquel Cancino; Oscar Castillo; Socorro del Pilar Cornejo; Elba Rodríguez; Juan Freundt; Rosa Escudero; Enrique Zacarías

2007-01-01

382

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

E-print Network

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

Roma "La Sapienza", Università di

383

Diagrama Ti - V: una nueva propuesta de discriminación para magmas básicos en cinco ambientes tectónicos  

Microsoft Academic Search

RESUMEN Se presentan diagramas de discriminació n para magmas básicos (basaltos normativos en hiperstena, basaltos normativos en nefelina, y traquiandesita s basálticas normativas en nefelina), que tienen por objeto el distinguir entre cinco diferentes ambientes tectónicos: arco continental (AC); arco de isla (AI); rift (Rt); isla oceánica (IO) y basaltos de cresta mesoceánica (MOR); con base en los datos de

Manuel Vasconcelos-F; Surendra P. Verma; R. Carmen Vargas-B

384

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

E-print Network

, its 18th century slave rebellion. This insurrection's symbolic importance is evident in Cuban Alejo Carpentier's novel El reino de este mundo (1949), while Trinidadian C.L.R. James links Haití to Cuba's 1959 Revolution in his essay "From Toussaint... and demonstrate some possible limitations in the use of Brechtian techniques to provoke a radical response to racism. Racial issues are also apparent in the plays that form the intertextual backdrop for this one, although they are conceived in very different...

Kuhnheim, Jill S.

1996-04-01

385

Bolivia y una preocupación constante: El indianismo, sus orígenes y limitaciones en el siglo XXI  

Microsoft Academic Search

Abstract The main objective of this essay is to track all the arguments that con- struct the doctrine called Indian thinking (indianismo). Therefore, the analysis will also be concentrated on the political implications the Indian ideology had inside the Constituent Assembly, where this doctrine denied any pos- sibility to reach a national reconciliation in Bolivia, hindering at the same time

Franco Gamboa Rocabado

386

Inventarios Globales de Biodiversidad: Una Respuesta a la Crisis Taxonómica  

NSDL National Science Digital Library

Taxonomy, the naming and classification of species, is in crisis. Planetary Biodiversity Inventories (PBIs) offer a way to increase the identification of organisms, our knowledge of Earth's biodiversity, student enrollment in taxonomic studies, and dissemination of information about the planet's species.

Lawrence M. Page (University of Florida;)

2006-05-01

387

enero-marzo2008Cinvestav24 Una de las metas principales de la criptografa  

E-print Network

la condición de que no existan premisas sobre la sofisticación tecnológica o poder computacional del. Aun si su validez fuera probada, tendríamos que adivinar el poder computacional teórico de un intruso de los algoritmos clásicos utilizados en la práctica yacen en la llamada "seguridad computacional", i

Rosas-Ortiz, Jose Oscar

388

Nematodicidas botânicos no controlo do nemátode-das-galhas-radiculares, Meloidogyne javanica.  

E-print Network

??Dissertação de mestrado em Biotecnologia e Bioempreendedorismo em Plantas Aromáticas e Medicinais Muitas das culturas com importância económica são afectadas por nemátodes parasitas das plantas.… (more)

Silva, Cláudia Isabel Couto Arantes Vieira da

2012-01-01

389

Informe Anual a la Nación indica una reducción en los índices de incidencia y mortalidad por cáncer; una sección especial revela amplias variaciones en las tendencias del cáncer de pulmón en los estados  

Cancer.gov

Un nuevo informe de las principales organizaciones oncológicas del país muestra que, por primera vez desde la primera publicación del informe en 1998, tanto el índice de incidencia como el de mortalidad para todos los cánceres combinados están disminuyendo en hombres y mujeres.

390

Importancia de las plantas medicinales en el autocuidado de la salud en tres caseríos de Santa Ana Trujillo, Venezuela. The importance of medicinal plants in health care in three small villages of the Santa Ana county at Trujillo state, Venezuela  

Microsoft Academic Search

In order to gather some information about the importance of medicinal plants in the primary health care, the use of plants in three small villages of the Santa Ana county, Pampán municipality at Trujillo State, Venezuela, was quantitatively analyzed. To do this, a local epidemiology diagnosis was carried out and the etnopharmacological information obtained was recorded using the TRAMIL survey.

TEOLINDA CARRILLO-ROSARIO Y GLENDA

391

Universidad Simn Bolvar, Edif. Energtica, Planta Baja. Valle de Sartenejas, Baruta, Caracas, Edo. Miranda, Venezuela, 89000 Telef.: 58 212 906-3708 / 3709 / 3710 / 3711 Fax: 58 212 906-3712 www.ulab.usb.ve  

E-print Network

. Miranda, Venezuela, 89000 Telef.: 58 212 906-3708 / 3709 / 3710 / 3711 Fax: 58 212 906-3712 www siguiente: Universidad Simón Bolívar Valle de Sartenejas Baruta; Edo. Miranda, 1080 Venezuela Cód. Doc.: UL

Vásquez, Carlos

392

Liberación\\/mineralización de nitrógeno en hojarasca de Eucalyptus grandis y leguminosas herbáceas, su relación con la calidad física y química del residuo y su efecto sobre el crecimiento de plantas jóvenes de eucalipto  

Microsoft Academic Search

Resumen El tipo de cosecha y manejo de residuos inciden en el contenido de nutrientes del suelo y la productividad forestal. Estos residuos contienen la mayoría del retorno de N. La velocidad de provisión de nutrientes por la descomposición\\/mineralización puede verse afectada por la calidad química y física como por la localización y contacto de los residuos con el suelo.

Alcaraz Maria Luciana

393

In-planta detection and monitorization of endophytic colonization by a Beauveria bassiana strain using a new-developed nested and quantitative PCR-based assay and confocal laser scanning microscopy.  

PubMed

Beauveria bassiana strain 04/01-Tip obtained from larvae of the opium poppy stem gall Iraella luteipes endophytically colonizes opium poppy plants and protect it against this pest. Development of a specific, rapid and sensitive technique that allows accurately determining the process and factors leading to the establishment of this strain in opium poppy plants would be essential to achieve its efficient control in a large field scale. For that purpose in the present study, species-specific primers that can be used in conventional or quantitative PCR protocols were developed for specifically identification and detection of B. bassiana in plant tissues. The combination of the designed BB.fw/BB.rv primer set with the universal ITS1-F/ITS4 primer set in a two-step nested-PCR approach, has allowed the amplification of up to 10fg of B. bassiana. This represented an increase in sensitivity of 10000- and 1000-fold of detection than when using the BB.fw/BB.rv primers in a single or single-tube semi-nested PCR approaches, respectively. The BB.fw and BB.rv primer set were subsequently optimized to be used in real time quantitative PCR assays and allowed to accurately quantify B. bassiana DNA in different plant DNA backgrounds (leaves and seeds) without losing accuracy and efficiency. The qPCR protocol was used to monitor the endophytic colonization of opium poppy leaves byB. bassiana after inoculation with the strain EABb 04/01-Tip, detecting as low as 26fg of target DNA in leaves and a decrease in fungal biomass over time. PCR quantification data were supported in parallel with CLMS by the monitoring of spatial and temporal patterns of leaf and stem colonization using a GFP-tagged transformant of the B. bassiana EABb 04/01-Tip strain, which enabled to demonstrate that B. bassiana effectively colonizes aerial tissues of opium poppy plants mainly through intercellular spaces and even leaf trichomes. A decline in endophytic colonization was also observed by the last sampling times, i.e. from 10 to 15days after inoculation, although fungal structures still remained present in the leaf tissues. These newly developed molecular protocols should facilitate the detection, quantification and monitoring of endophytic B. bassiana strains in different tissues and host plants and would help to unravel the factors and process governing the specific endophytic association between opium poppy and strain EABb 04/01-Tip providing key insights to formulate a sustainable strategy for I. luteipes management in the host. PMID:23851123

Landa, B B; López-Díaz, C; Jiménez-Fernández, D; Montes-Borrego, M; Muñoz-Ledesma, F J; Ortiz-Urquiza, A; Quesada-Moraga, E

2013-10-01

394

Efectos de distintas dosis de fertilizante de liberación controlada (Osmocote®) en el desarrollo de plantas de coigüe, raulí y ulmo Effects of different doses of slow-release fertilizer (Osmocote®) in the development of coigüe, raulí and ulmo seedlings  

Microsoft Academic Search

SUMMARY This study was carried out with the goal of determining the effects of different doses of slow-release fertilizer (Osmocote®) in the development of aerial and root biomass of the native species Nothofagus dombeyi, Nothofagus nervosa, and Eucryphia cordi- folia. Seedlings were raised in containers of 130 cm3 filled with discomposed bark of Pinus radiata calibrated to particles ? 10

Fernando Bustos; Pablo Donoso; Víctor Gerding; Claudio Donoso; Bernardo Escobar

395

Analysis of Two in Planta Expressed LysM Effector Homologs from the Fungus Mycosphaerella graminicola Reveals Novel Functional Properties and Varying Contributions to Virulence on Wheat1[W][OA  

PubMed Central

Secreted effector proteins enable plant pathogenic fungi to manipulate host defenses for successful infection. Mycosphaerella graminicola causes Septoria tritici blotch disease of wheat (Triticum aestivum) leaves. Leaf infection involves a long (approximately 7 d) period of symptomless intercellular colonization prior to the appearance of necrotic disease lesions. Therefore, M. graminicola is considered as a hemibiotrophic (or necrotrophic) pathogen. Here, we describe the molecular and functional characterization of M. graminicola homologs of Ecp6 (for extracellular protein 6), the Lysin (LysM) domain-containing effector from the biotrophic tomato (Solanum lycopersicum) leaf mold fungus Cladosporium fulvum, which interferes with chitin-triggered immunity in plants. Three LysM effector homologs are present in the M. graminicola genome, referred to as Mg3LysM, Mg1LysM, and MgxLysM. Mg3LysM and Mg1LysM genes were strongly transcriptionally up-regulated specifically during symptomless leaf infection. Both proteins bind chitin; however, only Mg3LysM blocked the elicitation of chitin-induced plant defenses. In contrast to C. fulvum Ecp6, both Mg1LysM and Mg3LysM also protected fungal hyphae against plant-derived hydrolytic enzymes, and both genes show significantly more nucleotide polymorphism giving rise to nonsynonymous amino acid changes. While Mg1LysM deletion mutant strains of M. graminicola were fully pathogenic toward wheat leaves, Mg3LysM mutant strains were severely impaired in leaf colonization, did not trigger lesion formation, and were unable to undergo asexual sporulation. This virulence defect correlated with more rapid and pronounced expression of wheat defense genes during the symptomless phase of leaf colonization. These data highlight different functions for MgLysM effector homologs during plant infection, including novel activities that distinguish these proteins from C. fulvum Ecp6. PMID:21467214

Marshall, Rosalind; Kombrink, Anja; Motteram, Juliet; Loza-Reyes, Elisa; Lucas, John; Hammond-Kosack, Kim E.; Thomma, Bart P.H.J.; Rudd, Jason J.

2011-01-01

396

Interplay of light and temperature during the in planta modulation of C4 phosphoenolpyruvate carboxylase from the leaves of Amaranthus hypochondriacus L.: diurnal and seasonal effects manifested at molecular levels  

PubMed Central

The interactive effects of light and temperature on C4 phosphoenolpyruvate carboxylase (PEPC) were examined both in vivo and in situ using the leaves of Amaranthus hypochondriacus collected at different times during a day and in each month during the year. The maximum activity of PEPC, least inhibition by malate, and highest activation by glucose-6-phosphate were at 15.00?h during a typical day, in all the months. This peak was preceded by maximum ambient light but coincided with high temperature in the field. The highest magnitude in such responses was in the summer (e.g. May) and least in the winter (e.g. December). Light appeared to dominate in modulating the PEPC catalytic activity, whereas temperature had a strong influence on the regulatory properties, suggesting interesting molecular interactions. The molecular mechanisms involved in such interactive effects were determined by examining the PEPC protein/phosphorylation/mRNA levels. A marked diurnal rhythm could be seen in the PEPC protein levels and phosphorylation status during May (summer month). In contrast, only the phosphorylation status increased during the day in December (winter month). The mRNA peaks were not as strong as those of phosphorylation. Thus, the phosphorylation status and the protein levels of PEPC were crucial in modulating the daily and seasonal patterns in C4 leaves in situ. This is the first detailed study on the diurnal as well as seasonal patterns in PEPC activity, its regulatory properties, protein levels, phosphorylation status, and mRNA levels, in relation to light and temperature intensities in the field. PMID:21045006

Avasthi, Uday K.; Izui, Katsura; Raghavendra, Agepati S.

2011-01-01

397

Reconnaissance evaluation of Honduran geothermal sites. Una evaluacion por medio de reconocimiento de seis areas geotermicas en Honduras  

SciTech Connect

Six geothermal spring sites were selected on the basis of preliminary investigations conducted in Honduras over the last decade and were evaluated in terms of their development potential. Of the six, the Platanares and San Ignacio sites have high base temperatures and high surface fluid discharge rates and appear to have the best potential for further development as sources of electrical power. A third site, Azacualpa, has a high enough base temperature and discharge rate to be considered as a back-up, but the logistical problems involved in geophysical surveys make it less attractive than the two primary sites. Of the remaining three sites, Pavana may be a source of direct-use heat for local agricultural processing. Sambo Creek and El Olivar have either severe logistical problems that would impede further investigation and development or base temperatures and flow rates that are too low to warrant detailed investigation at this time.

Eppler, D.; Fakundiny, R.; Ritchie, A.

1986-12-01

398

RIQUEZA Y DIVERSIDAD DE ESPECIES DE AVES EN UNA SELVA MEDIANA SUBPERENNIFOLIA EN EL CENTRO DE VERACRUZ, MÉXICO  

Microsoft Academic Search

We report the richness and diversity of bird species in three different areas (pasture, regenerating forest and mature forest) in Semievergreen forest from central Veracruz, Mexico. Out of the 171 bird species observed, 45% are abundant, 35% are scarce, and 35% rare; 112 species are permanent residents and 59 migratory species. In the regenerating forest 126 species were observed, as

José Cruz; BOJORGES BAÑOS; Lauro LÓPEZ-MATA

399

DISEÑO DE LOS PARÁMETROS DE UN ESTABILIZADOR DE SISTEMAS DE POTENCIA (PSS) BASADO EN UNA TÉCNICA EVOLUTIVA  

Microsoft Academic Search

This paper shows a method of design appears to find the parameters of a classic power system stabilizer. This method consists of an evolutionary technique that makes an optimal adjustment of the parameters of the PSS. The eigenvalue analysis and linear and nonlinear simulation results show the effectiveness of the technique in the damping of oscillations extending the stability limits.

Ingeniero Electricista; CARLOS A. RESTREPO; GRUPO DE INVESTIGACIÓN

2007-01-01

400

CONTROL DIFUSO DE UNA PLATAFORMA MÓVIL PARA EL SEGUIMIENTO DE TRAYECTORIAS. Fuzzy control of movil plataform for trajectories followers  

Microsoft Academic Search

This article presents a fuzzy control implemented in a movil platform to pursuit the complicated trajectories with the purpose to make all the route without losing the trajectory. The fuzzy control system determines the movement of two actuators from the reading of three sensors on line. The tests are made and it is compared with a classic control for trajectories

ALFONSO ALZATE GÓMEZ; ANDRÉS LÓPEZ LÓPEZ; CARLOS RESTREPO PATIÑO

2007-01-01

401

El cambio en las redes : una aproximación a las relaciones sociales desde el lenguaje, la representación y la institucionalización  

Microsoft Academic Search

Este artículo pretende retomar los planteamientos de Giddens de la doble hermenéutica como fundamento epistemológico para resolver la tensión entre metodologías estructurales cuantitativas como el análisis de redes sociales y el uso de representaciones sociales y lenguaje para entender la realidad social desde metodologías cualitativas. Esto involucra la discusión de la relación entre análisis cualitativo y cuantitativo. Estos debates no

Gabriel Vélez Cuartas

2006-01-01

402

Las categorías o facetas fundamentales: una metodología para el diseño de taxonomías corporativas de sitios web argentinos  

Microsoft Academic Search

Faceted analysis has been reassessed in last years for designing corporative taxonomies. In order to confirm its usefulness, we analyzed the Web sites of different Argentine organizations: three wineries, three food industries, six football clubs, five professional associations, three university schools, and five government agencies. From the 16 fundamental categories or facets proposed by the Classification Research Group, wineries coincide

Ana Martínez; Cristina Ristuccia; Rosa Pisarello; Edgardo Stubbs; Laura Caminotti; José Balparda; Julia Valdez; Norma Mangiaterra

2004-01-01

403

Un modelo explicativo de la localización regional de la Inversión Extranjera Directa. Una aplicación a la economía española  

Microsoft Academic Search

En la reciente literatura sobre economía internacional ha surgido un nuevo interés por el estudio de los factores que determinan y promueven la localización territorial de las grandes masas de capital financiero con fines productivos. Creciente aperturismo internacional y reafirmación de los aspectos regionales y locales dentro de cada nación son los elementos “casi antagónicos” que definen la nueva situación.

Raquel Diaz Vazquez

2003-01-01

404

Manejo anestésico de un paciente con displasia arritmogénica de ventrículo derecho, ascitis y colitis ulcerosa para una cirugía abdominal mayor  

Microsoft Academic Search

Summary A 43-year-old man with ulcerative colitis was sched- uled for pancolectomy owing to adenomatous transfor- mation of polyps. The patient had right ventricular arrhythmogenic dysplasia, with deteriorating ventricu- lar function, and carried an automatic implantable de- fibrillator. We discuss the general features of arrhyth- mogenic right ventricular dysplasia and its implications for management and monitoring during major abdomi- nal

F. Martínez Torrente; A. Orts Castro; F. García-Montoto; F. Pérez-Cerdá

405

Extenso estudio realizado en muchos centros demuestra que hay una precisión comparable de la colonoscopia virtual con la colonoscopia convencional  

Cancer.gov

Según los resultados del Estudio Nacional de Colografía de Tomografía Computarizada de la American College of Radiology Imaging Network, ACRIN, la colografía de tomografía computarizada, también conocida como colonoscopia virtual, es comparable a la colonoscopia convencional en su capacidad para detectar con precisión cáncer y pólipos precancerosos y podría servir como examen selectivo inicial de detección de cáncer colorrectal. La colonoscopia convencional usa un tubo largo, flexible, con cámara, para ver el revestimiento del colon.

406

SOSTENIBILIDAD DEL RECICLAJE DE RESIDUOS DE LA AGROINDUSTRIA AZUCARERA: UNA REVISIÓN SUSTAINABLE RECYCLING OF WASTE FROM SUGARCANE AGROINDUSTRY: A REVIEW  

Microsoft Academic Search

Sugar cane wastes and reuse strategies are a prior subject in sugar cane areas because of the new environmental standards and modern production systems. The overall goal of the present review is to analyze the environmental impact from sugar cane agroindustry and its recycling processes on the bases of a sustainable development planning. Literature review results consider that there are

R. Basanta; M. A. García Delgado; J. E. Cervantes Martínez; H. Mata Vázquez; G. Bustos Vázquez

2007-01-01

407

UN MODELO SIMPLIFICADO PARA DESCRIBIR LA EVOLUCIÓN DE LA HUMEDAD DEL SUELO EN PRESENCIA DE UNA CAPA FREÁTICA SOMERA  

Microsoft Academic Search

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

J. V. Giráldez; K. Vanderlinden; R. Ordóñez

408

EL SISTEMA DE VOUCHERS EN LA EDUCACIÓN: UNA REVISIÓN DE LA TEORÍA Y LA EVIDENCIA EMPÍRICA PARA CHILE  

Microsoft Academic Search

En Chile el 90% de los niños cursa su educación básica y media en escuelas municipales o particulares financiadas parcial o totalmente con recursos públicos. Los recursos que reciben estas escuelas dependen del número de alumnos atendidos. Cada alumno es \\

Cristian Aedo; Claudio Sapelli

409

DISEÑO DE UNA ESTRATEGIA PROMOCIONAL PARA UN NUEVO SEGMENTO DE MERCADO: PROGRAMA MBA-FULL TIME, EGADE-MONTERREY  

Microsoft Academic Search

En el presente trabajo se muestra la problemática que enfrenta la Escuela de Graduados en Administración y Dirección de Empresas (EGADE) del Tecnológico de Monterrey, Campus Monterrey, en cuanto a la captación de matrícula para su programa de MBA-Full Time, que es el pilar fundamental de esta importante escuela de negocios; para ello se identificó un importante segmento de mercado

Héctor Cuevas Vargas; Rudy Fernández Escobedo; Leticia Almanza Serrano

2010-01-01

410

Gerarchia, comportamento agonistico e gestione dei conflitti in una colonia di gorilla di pianura (Gorilla gorilla gorilla).  

E-print Network

??Riconciliazione, consolazione e appeasement sono comportamenti post-conflittuali che, all’interno della famiglia dei Pongidi, sono stati documentati e studiati soltanto per i membri appartenenti al genere… (more)

Chiarugi, Elena

2006-01-01

411

Desarrollo de una nueva metodología para la valoración de la movilidad cervical basada en técnicas de fotogrametría  

Microsoft Academic Search

IntroductionThe non-existence of objective, reliable and precise methods of functional valuation of the cervical spine mobility makes difficult the election of a suitable rehabilitation treatment and subsequent control of its evolution in affected patients of cervical pain. All this has raised the need of developing a new methodology of cervical mobility valuation based on video-photogrammetry techniques and to define the

J. M. Baydal-Bertomeu; M. P. Serra-Añó; D. Garrido-Jaén; J. López-Pascual; F. Matey; C. Gimeno; C. Soler; R. Dejoz

2007-01-01

412

ERASMUS -Movilidad de Personal para Formacin (STT) El objetivo de este programa es que el PAS de una universidad pueda  

E-print Network

PAS ERASMUS - Movilidad de Personal para Formación (STT) El objetivo de este programa es que el PAS publicación de la resolución de concesión. 2. Convenio de subvención de movilidad . (Por duplicado) 3. Acuerdo de movilidad firmado por ambas instituciones. La persona responsable para la firma del Plan de

Escolano, Francisco

413

La Accin Innovative Training Networks (ITN) tiene como objetivo formar, por medio de una red internacional de centros pblicos y  

E-print Network

. 10:00 Acciones Marie Sklodowska Curie: Convocatorias 2015 Innovative Training Networks (ITN´Enginyeria Química de la Universitat de València. Evaluadora. 13:15 Otras Acciones Marie Sklodowska Curie: próximas - Nivell 3 Avda. Blasco Ibañez, 13 Valencia Horizonte2020 INNOVATIVE TRAINING NETWORKS Marie Sklodowska

Escolano, Francisco

414

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

E-print Network

". Actualidad Universitaria #12;En cuanto a Zeneib Tuimi, ha trabajado como gestora de redes sociales en Casa Mediterraneo. Es autora de varias publicaciones sobre el papel que han jugado las redes sociales en las la representación pública de las mujeres" y reivindica su papel en las redes sociales que motivaron

Escolano, Francisco

415

COMPROMISO ORGANIZACIONAL DE LOS TRABAJADORES DE UNA UNIVERSIDAD PÚBLICA DE LIMA Y SU RELACIÓN CON ALGUNAS VARIABLES DEMÓGRAFICAS  

Microsoft Academic Search

The present investigation tries to know the organizational commitment about the workers not teachers of a public university of Lima and its relation with some demographic variables in a sample of 205 people of a whole of 20 faculties. The results throw a suitable trend of the workers towards the organizational commitment and the analysis of the factors indicates very

ALEJANDRO E. LOLI PINEDA; FACULTAD DE PSICOLOGÍA

416

Compartiendo la Ciencia con los Ninos: Una Guia para los Padres (Sharing Science with Children: A Guide for Parents).  

ERIC Educational Resources Information Center

This guide offers Spanish-speaking parents ways in which they can help their children learn about science at home and in the community. Science is a way of looking at the world. It uses everyday techniques such as observation and classification to give us information about things and how they work. Advice to parents that want to support their…

North Carolina Museum of Life and Science, Durham.

417

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

ERIC Educational Resources Information Center

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

Department of Justice, Washington, DC.

418

Intensive Behavioral Intervention for School-Aged Children with Autism: Una Breccia nel Muro (UBM)--A Comprehensive Behavioral Model  

ERIC Educational Resources Information Center

Although, reviews and outcome research supports empirical evidence for Early Intensive Behavior Intervention in pre-scholars, intensive behavioral service provision for school-aged children with autism spectrum disorders (ASD) are less subject to research studies. In order to provide effective behavioral interventions for school-aged children it…

Fava, Leonardo; Vicari, Stefano; Valeri, Giovanni; D'Elia, Lidia; Arima, Serena; Strauss, Kristin

2012-01-01

419

Concentraciones de Na, K, Ca y P en sueros de una muestra representativa de la población canaria  

Microsoft Academic Search

As part of the nutritional survey of the Canary Is- lands (ENCA-1998), the concentrations in serum of Na, K, Ca and P were determined in 395 individuals repre- senting the population of the Canary Islands. The con- centrations were found to be within the reference inter- vals described for the healthy population. Differences were observed in the mean concentrations depending

C. Díaz Romero; P. Henríquez Sánchec; F. López Blanco; E. Rodríguez Rodríguez; Serra Majem

420

¿El paradigma alternativo o el discurso dominante? Señales de tensión y revolución en torno a una disciplina “reverdizada”  

Microsoft Academic Search

Frente a la preeminencia del método hipotético deductivo y la extensión del modelo de equilibrio general al estudio de todos los fenómenos de la vida económica, algunas corrientes teóricas se han alzado contra la “hegemonía” de la teoría neoclásica y su particular manera de concebir la relación sociedad-naturaleza. En este texto se intenta establecer el grado de influencia de algunas

Raúl Hernando Cortés Landazury

2007-01-01

421

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

Microsoft Academic Search

Este documento analizó la evolución de la movilización de carga de los principales terminales Marítimos2 del país entre los años 1990-2004, con el objetivo de conocer el puerto que moviliza mayor cantidad de carga en el comercio exterior colombiano. Los resultados revelaron que la mayor parte de la carga exportada e importada en Colombia se realizó por vía marítima (95.9%),

Jaime Andrés Collazos; Santiago Borrero

2006-01-01

422

UNA VISIÓN DEL ESTADO DE LOS ANFIBIOS CRÍTICAMENTE AMENAZADOS DEL NORTE DE CENTROAMÉRICA Y LOS SITIOS EN LOS QUE HABITAN  

Microsoft Academic Search

According to IUCNs red list, about a third of the planet's amphibian species are under threat. The main threat is habitat loss, and this is now reinforced by the chytrid fungus epidemic that has strongly affected the populations of some species in Mesoamerica. In this symposium several projects were presented, all of which are dealing with amphibian species whose last

Jaime García-Moreno; Robin Moore; Georgina Santos-Barrera; Nicolás Urbina-Cardona; Paul Walker; Zoe Walker; Carlos Vásquez-Almazán; Josiah Townsend; Ruth Jiménez; Amy Upgren; Jim Barborak; Jaime R. Bonilla-Barbosa

423

Trastornos del control de los impulsos y punding en la enfermedad de Parkinson: la necesidad de una entrevista estructurada  

Microsoft Academic Search

IntroductionImpulse control disorders (ICD) including hypersexuality, compulsive gambling, buying, eating, shopping and dopaminergic medication use, have been reported to occur frequently in Parkinson's disease (PD). Punding (complex, repetitive, excessive, non-goal oriented behaviours) have also been described. As patients may not report such behaviours to their neurologist, ICD and punding appear to be under-recognised in clinical practice.

A. Ávila; X. Cardona; J. Bello; P. Maho; F. Sastre; M. Martín-Baranera

2011-01-01

424

Estructura poblacional y relaciones ambientales del árbol tropical Nectandra rudis (Lauraceae), una especie rara en el occidente de México  

Microsoft Academic Search

Population structure and environmental relationships of the tropical tree Nectandra rudis (Lauraceae), a rare species in western Mexico. The tree N. rudis is a rare species from western Mexico of which community and population features are unknown. We studied a population in an altitudinal gradient, from 550-1 850 m above sea level in the Sierra de Manantlan, Jalisco, Mexico. We

Ramón Cuevas Guzmán; Edmundo García Moya; J. Antonio; Vázquez García; Nora M. Núñez López

2008-01-01

425

Eficacia y seguridad de bemiparina en la prevención de la enfermedad tromboembólica venosa en pacientes de una residencia geriátrica  

Microsoft Academic Search

Objectiveto evaluate the safety and effectiveness of bemiparine in elderly institutionalized patients at risk of venous thromboembolic disease (VTD), following a prevention protocol established for health and social centers.

Álvaro José Prieto Seva

2007-01-01

426

Books in Spanish for Children and Young Adults: An Annotated Guide (Libros Infantiles y Juveniles en Espanol: Una Guia Anotada).  

ERIC Educational Resources Information Center

Intended to aid teachers, librarians, and others in the selection of Spanish-language books for children in grades K-12, the annotated guide includes books by Hispanic authors which highlight the lifestyle, folklore, heroes, history, fiction, poetry, theatre, and classical literature of Hispanic cultures. Most books included in the guide have been…

Schon, Isabel

427

Copyright by the Italian Society of Silviculture and Forest Ecology. Proposta di una metodologia di analisi della variazione di superficie  

E-print Network

protocol: a study case in Northern Italy. According to art. 3.3 of the Kyoto Protocol, Italy, like other to attain the goals appointed from the Kyoto Proto- col. Keywords: Kyoto protocol, afforestation protocollo di Kyoto: il caso della Comunità Montana del Grappa (TV) Salvadori I, Pilli R, Anfodillo

Anfodillo, Tommaso

428

GESTIONE CONFLITTI D'INTERESSE Questo allegato vuole dare una traccia sulla possibile soluzione dei potenziali conflitti d'interesse.  

E-print Network

tenuto alla massima riservatezza. A. Comitato di valutazione I componenti del C.V. prima della seduta iniziale, devono, pena la decadenza dal C.V.: · dichiarare di non aver presentato direttamente o che nel corso della sessione di valutazione insorgano conflitti, il C.V. dovrà obbligatoriamente pena

De Cindio, Fiorella

429

El doctorado consiste en la realizacin de la Tesis Doctoral, dentro de una de las lneas de investigacin ofertadas, y  

E-print Network

. · Álgebra computacional y criptografía. · Aplicaciones en dinámica de poblaciones. · Bioinformática y la Matemática Aplicada y Computacional. Orientación profesional: · Formar profesionales con (TS), Informática Industrial (II), y Matemática Aplicada y Computacional. (MAC) Consta

Giménez, Domingo

430

Tools for evaluating Lipolexis oregmae (Hymenoptera: Aphidiidae) in the field: Effects of host aphid and host plant on mummy location and color plus improved methods for obtaining adults  

SciTech Connect

Lipolexis oregmae Gahan was introduced into Florida in a classical biological control program directed against the brown citrus aphid, Toxoptera citricida (Kirkaldy), on citrus. Prior to evaluating distribution, host range, and potential nontarget effects of L. oregmae in Florida, we evaluated the role of other potential host aphids and host plants on mummy production and location. Under laboratory conditions, this parasitoid produced the most progeny on the target pest, the brown citrus aphid on citrus. This parasitoid, unlike the majority of aphidiids, did not produce mummies on any of the host plants tested when reared in black citrus aphid T. aurantii (Boyer de Fonscolombe) on grapefruit, spirea aphid Aphis spiraecola Patch on grapefruit and pittosporum, cowpea aphid A. craccivora Koch on grapefruit and cowpeas, or melon aphid A. gossypii Glover on grapefruit and cucumber. Thus, sampling for L. oregmae mummies of these host aphids and host plants must involve holding foliage in the laboratory until mummies are produced. This parasitoid requires high relative humidity to produce adults because no adults emerged when mummies were held in gelatin capsules, but high rates of emergence were observed when mummies were held on 1.5% agar plates. In addition, we compared the color of 6 aphid hosts and the color of mummies produced by L. oregmae when reared in them to determine if color of mummies could be used to identify L. oregmae . Mummy color varied between aphid hosts and tested host plants, and is not a useful tool for identifying L. oregmae for nontarget effects. (author) [Spanish] Lipolexis oregmae Gahan fue introducida en Florida por medio de un programa de control biologico clasico dirigido contra el afido pardo de los citricos, Toxoptera citricida (Kirkaldy), sobre Citrus. Prioritario a la evaluacion de la distribucion, el rango de los hospederos y los efectos potenciales de L. oregmae sobre los organismos que no son el enfoque de control en la Florida, nosotros evaluamos el papel de otras especies de afidos y plantas hospederas potenciales sobre la produccion y ubicacion de las momias. Bajo condiciones de laboratorio, este parasitoide produjo el mayor numero de progenies sobre la especie de plaga enfocada, el afido pardo de los citricos sobre Citrus . Este parasitoide, no como la mayoria de los afidiidos (Hymenoptera), no produjo momias sobre cualquiera de las plantas hospederas probadas cuando fue criado sobre el afido negro de los citricos, ( T. aurantii (Boyer de Fonscolombe)) en toronja, el afido spirea (Aphis spiraecola Patch) en toronja y pittosporum, el afido del caupi (A. craccivora Koch) en toronja y caupi o el afido del melon (A. gossypii Glover) en toronja y pepino. Asi, el muestreo para momias de L. oregmae de estas especies de afidos hospederos y plantas hospederas tiene que incluir el mantenimiento de follaje en el laboratorio hasta que se produzcan las momias. Este parasitoide requiere una alta humedad relativa para producir los adultos por que ningun adulto emergio cuando las momias fueron mantenidas en capsulas de gelatina, pero una tasa alta de emergencia de adultos fue observada cuando se mantuvo las momias en platos con agar al 1.5%. Ademas de esto, nosotros comparamos el color de 6 especies de afidos hospederos, asi como el color de las momias producidos por L. oregmae cuando fue criado sobre ellos para determinar si se puede usar el color de las momias para la identificacion de L. oregmae . El color de las momias varia entre las especies de afidos hospederos y las plantas hospederas probadas, por lo que no es una herramienta util para la identificacion de L. oregmae o para la evaluacion de su efecto sobre los organismos que no son el enfoque del control. (author)

Singh, R.; Hoy, M.A. [Department of Entomology and Nematology, University of Florida, Gainesville, FL (United States)

2007-03-15

431

DEL FOLKLORE AL MECANISMO MOLECULAR: EL EJEMPLO DE AJOENE  

Microsoft Academic Search

Básicamente, se utilizan tres enfoques generales para el desarrollo de drogas derivadas de plantas: 1. Eva- luaciones fitoquímicas en búsqueda de constituyentes que contengan determina- dos grupos químicos de compuestos (alcaloides, triterpenos, glicósidos, etc). 2. Selección de plantas que contengan deter- minados compuestos químicos, y evalua- ción por bioensayos. 3. Selección de plantas basadas en el Folklore, es decir en

ELIADES LEDEZMA; RAFAEL APITZ-CASTRO; T. H. Huxley

432

Building Your Baby's Brain: A Parent's Guide to the First Five Years = Como estimular el cerebro infantil: Una guia para padres de familia.  

ERIC Educational Resources Information Center

Noting that all parents can help their baby's brain to grow, this guide, in English- and Spanish-language versions, explores what science has learned about infant brain development and how parents and caregivers can influence cognitive development. Topics covered include: prenatal care, touching your baby, teaching about feelings and self-control,…

Dodge, Diane Trister; Heroman, Cate

433

El análisis de un estudio clínico indica que una combinación de fármacos puede ser de gran eficacia contra el cáncer de ovario recidivante  

Cancer.gov

El uso de un tratamiento farmacológico combinado para el cáncer de ovario recidivante mostró mejorías significativas, según se informó el día de hoy en el congreso anual de la Sociedad Americana de Oncología Clínica (ASCO). La combinación farmacológica se evaluó en un estudio de fase I y posteriormente en un estudio clínico aleatorizado de fase II patrocinado por el Instituto Nacional del Cáncer (NCI).

434

Informe Anual a la Nación sobre el Estado del Cáncer 1975-2002 con una sección especial sobre las tendencias de tratamiento: preguntas y respuestas  

Cancer.gov

Las organizaciones oncológicas principales de la nación informan que el riesgo de los estadounidenses de morir de cáncer sigue disminuyendo y que las tasas de casos nuevos de cáncer permanecen estables. El Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2002, señala que las tasas de mortalidad de cáncer que se observaron para todos los cánceres combinados disminuyeron 1,1 por ciento por año de 1993 a 2002.

435

Consequences of antenna design in telemetry studies of small passerines [Consecuencias en el disen??o de una antena en un estudio de radiotelemetria para paserinos  

USGS Publications Warehouse

Entanglement and mortality of Palila (Loxioides bailleui), an endangered Hawaiian honeycreeper, occurred when birds were radio-tagged with transmitters equipped with a long, limp, solder-tipped antenna. Birds were found suspended in trees by their transmitter antenna on eight occasions. Although these birds eventually freed themselves or were freed by us, at least one bird died afterwards. For radio telemetry studies of small passerine species we recommend avoiding transmitters equipped with an antenna that is bulbous at the tip, >16 cm in length, limp, and shiny.

Dougill, S.J.; Johnson, L.; Banko, P.C.; Goltz, D.M.; Wiley, M.R.; Semones, J.D.

2000-01-01

436

Summer Reading Adventure! Tips for Parents of Young Readers = La lectura...Una aventura para el verano: Ideas para padres de ninos que apenas comienzan a leer.  

ERIC Educational Resources Information Center

Over the summer, many children lose ground in the reading skills they are building at school. Weave reading into the family's summer, and children will go back to school refreshed, excited, and ready to pick up where he or she left off. Advice for parents and caregivers includes: seek out books and reading materials that tie into children's summer…

Moss, Jeanette

437

Work and Family in the United States: A Policy Initiative. A Report of the Family Policy Panel of the Economic Policy Council of UNA-USA.  

ERIC Educational Resources Information Center

As part of its world employment project, the Economic Policy Council of the United Nations Association of the United States formed the family policy panel to further examine the extent of ongoing changes affecting the family, the workplace, and the economy. In its work, the family policy panel concentrated on five issues considered central to the…

United Nations Association of the United States of America, New York, NY.

438

Una Introduccion a los Jovenes con Discapacidades: Bibliografia Anotada. Revisiones de CYDLINE (An Introduction to Youth with Disabilities: Annotated Bibliography. CYDINE Reviews).  

ERIC Educational Resources Information Center

This Spanish-language annotated bibliography describes English-language resources covering a wide range of issues related to disabled youth and their families. The 38 bibliographic citations date from 1980 to 1989 and are grouped into the following categories: psychosocial issues, health issues, educational issues, and community living.…

Minnesota Univ., Minneapolis. National Center for Youth with Disabilities.

439

Hacia una base normativa mexicana en la medición de calidad de vida relacionada con la salud, mediante el Formato Corto 36  

Microsoft Academic Search

Objective. To present the results of the application of the short format 36 instrument (SF-36) in the Mexican states of Sonora and Oaxaca. The levels of quality of life were com- pared with those from Canada and the United States. Ma- terial and Methods. The data were obtained using a survey on health service access, usage, and quality. The SF-36

Luis Durán-Arenas; Katia Gallegos-Carrillo; Guillermo Salinas-Escudero; Homero Martínez-Salgado

2004-01-01

440

Changes in macromolecule syntheses under special consideration of UNA and the energy providing system in imbibing embryos of different aged agrostemma githago L. Seeds  

Microsoft Academic Search

Changes in macromolecule syntheses, especially RNA synthesis, and the energy providing system were investigated in seeds ofAgrostemma githago aged for different periods. In embryos of aged seeds all macromolecule syntheses start later and reach a lower level than\\u000a young ones. It was found that the synthesis of rRNA in embryos of aged seeds is reduced whereas the synthesis of poly

R. Kosanke; D. Bernhardt; K. H. KÖhler; Birgit Voigt

1990-01-01

441

A Self-Tuning Analog Proportional-Integral-Derivative (PID) Controller Varun Aggarwal, Meng Mao and Una-May O'Reilly  

E-print Network

A Self-Tuning Analog Proportional-Integral-Derivative (PID) Controller Varun Aggarwal, Meng Mao. In comparison to a self-tuning digital PID controller, it combines the advan- tages of low power, digital self-tuning PID con- trollers are ubiquitous in the industry. These controllers au- tomatically

O'Reilly, Una-May

442

Review: Confocal scanning laser microscopy. A powerful tool in food science Revision: Microscopía láser confocal de barrido. Una potente herramienta en la ciencia de los alimentos  

Microsoft Academic Search

Confocal scanning laser microscopy (CSLM) is a recently developed light microscopy technique which permits observation of selected levels within thick samples. CSLM improves the resolution along the viewing axis and permits optical sectioning of the sample. Sample preparation is not time consuming and changes the original structure of the specimen only minimally. In this way structures involved in kinetic processes

M. Ferrando; W. E. L. Spiess

2000-01-01

443

Características psicométricas de la Escala Center for Epidemiological Studies-depression (CES-D), versiones de 20 y 10 reactivos, en mujeres de una zona rural mexicana  

Microsoft Academic Search

SUMMARY Depressive symptoms constitute a common mental health problem, with a relevant social and personal impact. These symptoms are present not only among the urban population in more economically developed countries, but also in rural areas in poor and middle development countries. In order to obtain reliable information on the frequency of depressive symptoms, their risk factors or the impact

Ietza Bojorquez Chapela; Nelly Salgado de Snyder

444

Visión de los diferentes agentes sociales sobre la participación social en el sistema de salud en el nordeste de Brasil: una aproximación cualitativa  

Microsoft Academic Search

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

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

2002-01-01

445

Explorando el costo-efectividad de instrumentos basados en el mercado para la mejora de la calidad del agua: una modelación espacial económico-ambiental  

Microsoft Academic Search

El uso agrícola de la tierra en cuencas costeras conduce a la contaminación del agua y degradación subsecuente de recursos costeros y marinos. Para asegurar el desarrollo económico sostenible de las regiones costeras, es necesario balancear los beneficios marginales de la contaminación (agrícola) del agua con los costos marginales asociados a la degradación de los recursos costeros y marinos. La

Peter C. Roebeling; Martijn E. van Grieken

2009-01-01

446

EFECTOS DE LA EROSIÓN EN LA RESTAURACION DE UNA ZONA MINERA CON UN CLIMA SEMIÁRIDO: CASO PARTICULAR NACOZARI DE GARCIA, SONORA, MÉXICO  

Microsoft Academic Search

Soil erosion has a significance of adverse impacts on the earth and its inhabitants. If the phenomenon of erosion located from the context of natural soils is problematic, a fortiori it is for mining areas where there are deposits of mining waste (tailings), Environmental problems of mining in Mexico is a legacy the past. A special case is the tailings

Diana Meza-Figueroa; Sergio Alán Moreno; José Alberto Campillo-Rivera

447

El Mediterráneo europeo: Una imagen de marca común frente a los países lejanos para los destinos tradicionalmente turísticos de la Unión Europea  

Microsoft Academic Search

En la actualidad el turismo se configura como uno de los sectores de mayor aportación al PIB de determinados países que en pocos años han visto cómo esta industria es capaz de configurarse como un motor fundamental de su economía. En el marco de la Unión Europea, cabe destacar países como Francia, España o Italia y podemos incluir también a

Mecedes Jiménez García

2008-01-01

448

LA ELABORACIÓN DE PROYECTOS DE CIENCIA E INNOVACIÓN EN LA ESFERA DE LA COMUNICACIÓN SOCIAL. UNA CLASE METODOLÓGICA INSTRUCTIVA PARA LOS DOCENTES  

Microsoft Academic Search

La formación del capital profesional a partir de los egresados del nivel superior en los saberes de la ciencia y la innovación desde la elaboración de proyectos investigativos e innovativos, con vistas al desarrollo de su contextualidad como proceso social, es condición sine qua non de los educandos de la comunicación social, sobre la base del modelo del profesional y

Mayra Elena Salas Vinent

2010-01-01

449

IMPLEMENTACION DE UNA NUEVA METODOLOGÍA PARA LA ADQUISICIÓN DE DATOS PARA CALCULAR LOS COEFICIENTES DE INFLUENCIA DE UN ROTOR EXPERIMENTAL BASADO EN EL ANALISIS MODAL  

Microsoft Academic Search

Este The purpose of this work is to implement a new methodology for the acquisition of data to calculate the influence coefficients for an experimental rotor. Starting from a mathematical model based on modal analysis, the transverse vibration equations for the rotor supports are derived, and from these the influence coefficients, traditionally used in dynamic rotor balancing, are determined. All

Tomás Fernández Gómez; Eloy Martínez Leal; German A. Muñoz Hernández; José P. Nuño

450

Efectividad, seguridad y coste-efectividad de la terapia por presión negativa tópica para el tratamiento de las heridas crónicas: una revisión sistemática  

Microsoft Academic Search

Negative-pressure wound therapy (NPWT) is used to promote wound healing by using suction to drain excess fluid from wounds. A systematic literature review was undertaken to assess the effectiveness, safety and cost-effectiveness of NPWT for the treatment of chronic wounds. Medline, Embase, CENTRAL, CINAHL and the Cochrane Wounds Group Specialised Trials Register were searched. A total of 9 randomized controlled

María Trujillo-Martín; Lidia García-Pérez; Pedro Serrano-Aguilar

2011-01-01

451

Humanismo cívico y medios de comunicación social Hacia una hermenéutica mediática de la esperanza1 Civic Humanism and the Mass Media Towards the Media Hermeneutics of Hope  

Microsoft Academic Search

There is a proposal in political philosophy known as civic humanism. This socio-political model, with defi nite Aris- totelian roots, was rehabilitated recently by the Spanish philosopher Alejandro Llano. Civic humanism invites us to rethink democracy from the standpoint of genuinely human parameters, inasmuch as its thinking is centered on the person and his\\/her essential dignity. As part of this

Liliana Beatriz Irizar; Javier Nicolás González-Camargo

452

La Marimba y el joven Pluma de Quetzal: una leyenda chiapaneca. (The Marimba and the Young Man, Pluma de Quetzal: A Chiapaneca Legend.)  

ERIC Educational Resources Information Center

The illustrated book is about the legend of Pluma de Quetzal and the marimba. The story, which takes place in the Mexican state of Chiapas, tells how the woodcutters who lived in the area would sit around the fire talking and singing every night. Sung by tired voices, their songs had no happy music. Instead of happiness and hope, they expressed…

Marquez, Jerry

453

Desarrollo de una formulación optimizada de galletas para celiacos utilizando harina desgrasada de avellana chilena (Gevuina avellana, Mol) y harina de quinoa (Chenopodium quinoa Willd)  

Microsoft Academic Search

SUMMARY. Development of a cookie formulation for celiac people using defatted Chilean hazel nut (Gevuina avellana. Mol) flour and quinoa (Chenopodium quinoa Willd) flour. The present investigation deals with the optimization of a cookie formulation based on deffated chilean hazel nut flour (DCHF) and quinoa flour (QF) characterized for being gluten free resources, aimed to increment the nutritional options of

Mario Villarroel; Carolina Huiriqueo; Julia Hazbun; Diego Carrillo

454

Factores predictores de inicio y cesación de tabaquismo en una cohorte de mujeres chilenas con 5,5 años de seguimiento  

PubMed Central

Background Chilean women have one of the highest smoking prevalence in the world. Aim To estimate the main factors associated with smoking initiation and quitting among a cohort of adult women living in a low socioeconomic status area of Santiago, Chile. Material and methods A random population-based sample of 1,100 women, 18 years and older, were selected from a community located in the South East area of Santiago. Sociodemographic, as well as smoking, beliefs, behaviors, stages of change and nicotine addiction level were recorded during a personal interview. After an average follow-up period of 5.5 years, women were re-evaluated. Results Seventy-three percent of women completed the study. At baseline, 39% of women were smokers. At the end of the study, there was an absolute smoking rate reduction of 7.1% (p<0.001). The main variables associated with smoking initiation were younger age (Odds ratio (OR): 1.08, 95% confidence intervals (CI): 1.05–1.12), higher education level (OR: 1.2, 95% CI: 1.07–1.35), and having fewer children (OR: 1.3 95% CI: 1.01–1.66). Factors related with quitting were younger age of onset (OR: 1.06 95% CI: 1.02–1.1), higher level of nicotine dependence (OR: 4.22, 95% CI: 1.74–10.27), and higher perception of smoking addiction (OR: 4.34, 95% CI: 2–9.09). Stage of change was associated with smoking cessation but its effect was diluted after adjusting for the level of nicotine addiction. Conclusions Sociodemographic and family factors were the main variables related with initiation, whereas age of onset, belief of addiction, and nicotine dependence were the main factors related with cessation. Women with a high motivation for quitting should be evaluated for nicotine addiction level to define the best strategy for intervention (Rev Méd Chile 2009; 137: 1001–9). PMID:19915762

Puschel, Klaus; Thompson, Beti; Olcay, Fabiola; Frreccio, Catterina

2014-01-01

455

Aunque cerca...sano: Una guia para prevencion de los riesgos de los pesticidas (Although Nearby...Healthy: A Guide for the Prevention of Pesticide Risks).  

ERIC Educational Resources Information Center

Intended for Spanish-speaking farmworkers with children, this publication in comic book format tells these parents how they can protect their children from pesticide risks. On returning home from work, one farmworker couple does not hug their young children. When their behavior is questioned by neighbors, the mother explains that the fields were…

Saenz, Salvador

456

Ayudando a Ninos Dotados a Volar: Una Guia Practica para Padres y Maestros (Helping Gifted Children Soar: A Practical Guide for Parents and Teachers).  

ERIC Educational Resources Information Center

Intended for parents of gifted children, this book, in Spanish, stresses the importance of positive relationships between parents and teachers as they work to meet children's academic, emotional, and social needs. Individual chapters address the following topics: (1) parenting the gifted child as a wild roller coaster ride; (2) determining whether…

Strip, Carol A.

457

La línea divisoria que une: Una exploración de la cultura híbrida en la región fronteriza entre México y los Estados Unidos  

Microsoft Academic Search

With the creation of our “modern world” came the ideology and system of nation-states. Land in its most natural and undivided condition was marked, fenced, walled, and mapped in order to give direct power of territory to a nation-state. The borderline between the United States and Mexico was established not so long ago, in 1857 after the US-Mexico War. The

Molly J Foye

2012-01-01

458

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

Microsoft Academic Search

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

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

459

Elaborare in sardo, elaborare in italiano. Una ricerca nella scuola media (Uses of Sardinian and Italian: Research in the Junior High School).  

ERIC Educational Resources Information Center

Presents a historic overview and analysis of the Sardinian language (actually a system of dialects), and defines diglossia and bilingualism. A discussion focuses on research conducted in two junior high schools to determine the differences in linguistic behavior in two contrasting situations (village and city) in regard to Sardinian and Italian.…

Pinto, Maria Antonietta; Migaleddu, Maria Vittoria

1989-01-01

460

Imatges fotogràfiques i cultura escolar en el franquisme: una exploració de l'arxiu etnogràfic = Photographs and school culture in francoism: an exploration of the ethnographical archive  

Microsoft Academic Search

En aquest article s'exploren les possibilitats que ofereixen les fotografies com a\\u000afont per estudiar la cultura escolar. Per això s'estudia un arxiu visual de caràcter etnogràfic,\\u000aque és el Fons documental Anselmo Romero Marín, que es troba al Museo de\\u000aHistoria de la Educación «Manuel Bartolomé Cossío» de la Universitat Complutense\\u000ade Madrid. S'hi conserven 891 treballs monogràfics, realitzats

Maria del Mar Del Pozo Andrés; Teresa Rabazas Romero

2010-01-01

461

The Jobs Challenge: Pressures and Possibilities. A Report of the Jobs Panel of the Economic Policy Council of UNA-USA.  

ERIC Educational Resources Information Center

Technological, demographic, and competitive pressures have transformed the U.S. labor market and must be dealt with on a priority basis. The urgency of the problem can best be addressed by creating a national institution that is independent of government, business, and labor but that draws on all three sectors to develop a broad array of policies…

United Nations Association of the United States of America, New York, NY.

462

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

E-print Network

de 51 personas equivalentes a tiempo completo, 61% mujeres. La FuGUIB cerró el ejercicio económico el curso 2012-13 han sido las siguientes: renovación del mobiliario en las zonas comunes y las habitaciones, reposición del suelo de los pasillos y zonas comunes, cambio del grupo de presión para el agua

Oro, Daniel

463

ZONA PELLUCIDA: AN EXTRACELLULAR MATRIX WITH APPLICATIONS IN THE STUDY OF IMMUNOCONTRACEPTION IN DOMESTIC CARNIVORES Zona Pelúcida: Una Matriz Extracelular con Aplicaciones en Anticoncepción de Carnívoros Domésticos  

Microsoft Academic Search

Zona pellucida (ZP) is an extracellular matrix surrounding the mammalian oocyte. In most mammalian species this matrix consists of three families of glycoproteins likely to suffer several postraductional modifications to acquire different immunological and biochemical properties. The ZP are involved in the initial recognition and binding events of sperm to oocyte investments. Because of its major role in the fertilization

Alfonso Sánchez Riquelme; Avenida Agua Santa

2004-01-01

464

EFICIENCIA DE USO DE N-P-K EN UNA ASOCIACIÓN DE MAÍZ (Zea mays L.) Y QUINCHONCHO (Cajanus cajan L. Millspaugh) CON O SIN FERTILIZACIÓN  

Microsoft Academic Search

Use efficiency of N-P-K intercropping system of corn Zea mays L. and pigeonpea Cajanus cajan L. Millspaugh with or without fertilization An experiment was conducted in Quíbor Valley, Lara State, Venezuela, to evaluate the use efficiency of the elements N, P and K in plants of maize and pigeonpea sewed as monocrops or intercrops. Plants were grown without fertilizer application,

Ana Isabel Quiroz; Douglas Marín

2007-01-01

465

A Special Family Series. Mario and Clara Hernandez. Clara Finds a Friend = Lina Familia Especial. Mario y Clara Hernandez. Clara Eucuentra una Amiga.  

ERIC Educational Resources Information Center

These two comic books are part of the "Very Special Family" series, created by and for Hispanic parents of children with special needs. The materials are designed to help parents deal with the emotional difficulties of raising a child with disabilities. The booklets are printed in both English and Spanish. In Part 1, "Mario and Clara Hernandez," a…

Cazares, Maria

466

financi tanto la seccin Hispanoamericana como la revista Tierra Firme. La llegada de Claudio Snchez-Albornoz a la cartera de Estado inaugur una  

E-print Network

70 71 financió tanto la sección Hispanoamericana como la revista Tierra Firme. 15 La llegada de, Madrid, 1989, pp. 546-547. 22 Carta de Américo Castro a la Junta de Relaciones Culturales, Madrid, 30 de, pp. 1071- 1096. 26 Tierra Firme, nº 1, 1935, Madrid, pp. 5-6. 27 Tierra Firme, nº 3-4, 1936, Madrid

Paris-Sud XI, Université de

467

TELEDETECCION E INTERPRETACIÓN DE IMÁGENES COMO METODO DE OBTENCIÓN DE UNA CARTA DE CONDUCTIVIDAD ELECTRICA EN ZONA CENTRAL DE LA REPUBLICA MEXICANA  

Microsoft Academic Search

This paper show a method of classification of the different characteristics of the terrestrial surface to be able to determine the electric conductivity of the land from images obtained by remote sensing.

Raúl Ruiz Meza; Alonso S. Monroy; Pacheco J. Ismael; Montoya Tena

468

Alianza para el Aprendizaje: Una guia de actividades educativas para familias (Alliance for Learning: A Guide of Educational Activities for Families).  

ERIC Educational Resources Information Center

This Spanish-language publication condenses the information in the Alliance for Learning series. The publication is intended principally for families with preschool or primary grade children, although the material can be used with older children. The sections of the publication address various themes and present activities that parents can do with…

Carr, Phil

469

Relationship between PCBs in suspended and settled sediments from a coastal lagoon Relación entre PCBs en sedimentos suspendidos y depositados de una laguna costera  

Microsoft Academic Search

Polychlorinated biphenyl (PCB) congener concentrations and organic matter content were determined in 84 samples of suspended and settled sediments collected from six different locations in the Ria Formosa lagoon (Portugal). Total PCB (tPCB) concentrations were higher in the suspended matter (1.00-39.80 ng g -1 dw) than in the sediments (0.10-2.10 ng g -1 dw) and, in general, the same was

Luísa A. Barreira; Maria J. Bebianno; Stephen M. Mudge; Ana M. Ferreira; Clarisse I. Albino; Luís M. Veriato

2005-01-01

470

The residual and direct effects of reduced-risk and conventional miticides on twospotted spider mites, Tetranychus urticae (Acari: Tetranychidae) and predatory mites (Acari: Phytoseiidae)  

SciTech Connect

The residual effects of several reduced-risk and conventional miticides were evaluated in strawberries (Fragaria z ananassa Duchesne) on the twospotted spider mite (TSSM), Tetranychus urticae Koch (Acari: Tetranychidae) and on 2 predatory mites, Neoseiulus californicus McGregor and Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae). Experiments were conducted in the laboratory and greenhouse. The greenhouse experiments also tested the direct effects of the miticides on TSSM. The efficacy of conventional and reduced-risk miticides was evaluated on strawberry leaf discs and on whole plants for control of TSSM. Furthermore, the residual effects of these miticides were evaluated on whole strawberry plants against selective predatory mites. For TSSM, 5 treatments were evaluated: a conventional miticide; fenbutatin-oxide (Vendex[reg]) and 3 reduced-risk miticides; binfenazate (Acramite 50WP[reg]), activated garlic extract (Repel[reg]), sesame seed and castor oil (Wipeout[reg]), and a water-treated control. For predatory mites, the residual effects of only Acramite[reg] and Vendex[reg] were evaluated. Acramite[reg] was the most effective acaricide in reducing TSSM populations in both the laboratory and greenhouse experiments. Vendex[reg] and Wipeout[reg] were also effective in the laboratory, but did not cause significant reduction of TSSM in the greenhouse. Repel[reg] was the least effective of the 4 pesticides evaluated. Neither Acramite[reg] nor Vendex[reg] had a significant effect on either predatory mite species. However, there appeared to be more predatory mites on the Vendex[reg]-treated plants than on the Acramite[reg]-treated plants. There were significantly more predatory mites of both species on the cue plants, which were inoculated with TSSM versus the non-cue plants, which were not inoculated. (author) [Spanish] Los efectos residuales en poblaciones de la 'arana roja', Tetranychus urticae Koch (Acari: Tetranichidae) y de los acaros predadores Neoseiulus californicus McGregor y Phytoseilus persimilis Athias-Henriot (Acari: Phytoseiidae) causados por varios acaricidas convencionales y de riesgo-reducido fueron evaluados en fresas (Fragaria x ananassa Duchense). Los experimentos fueron realizados en laboratorio e invernadero. Los experimentos en el invernadero evaluaron tambien el efecto directo de los acaricidas en la 'arana roja'. La eficacia para controlar la 'arana roja' de los acaricidas convencionales y de riesgo-reducido fue evaluada en discos de las hojas y en plantas de fresa, y los efectos residuales de los acaricidas en los acaros predadores fueron evaluados en plantas completas. Para la 'arana roja' se evaluaron cinco tratamientos: el acaricida convencional fenbutatin-oxido (Vendex[reg]), 3 acaricidas de riesgo-reducido binfenazate (Acaramite 50WP[reg]), extracto de ajo activado (Repel[reg]), aceite de semillas de ajonjoli y ricino (Wipeout[reg]) y un control tratado con agua. Para los acaros predadores solamente los efectos de Acaramite[reg] y Vendex[reg] fueron evaluados. Acaramite[reg] fue el tratamiento mas efectivo para la 'arana roja' en el laboratorio y el invernadero. Vendex[reg] y Wipeout[reg] fueron tambien efectivos en el laboratorio, pero no causaron una reduccion significativa de 'aranas rojas' en el invernadero. Repel[reg] fue el tratamiento evaluado menos eficaz. Ni Acaramite[reg] ni Vendex[reg] redujeron significativamente las poblaciones de acaros predadores. Sin embargo, aparentemente hay mas acaros predadores en Vendex[reg] que en Acaramite[reg]. Tambien se encontraron significativamente mas acaros predadores en plantas inoculadas que en plantas no inoculadas. (author)

Liburd, O.E.; White, J.C.; Rhodes, E.M. [Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611 (United States); Browdy, A.A. [Department of Food Science and Human Nutrition, University of Florida, Gainesville, FL 32611 (United States)

2007-03-15

471

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

ERIC Educational Resources Information Center

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

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

472

El Derecho de su Hijo(a) a Una Educacion: Una guia para los Padres de Ninos Impedidos en el Estado de Nueva York (Your Child's Right to an Education: A Guide for Parents of Children with Handicapping Conditions in New York State).  

ERIC Educational Resources Information Center

Intended for parents of handicapped students, the guide (available in English, Spanish, or Chinese) sets forth the New York State policies for speical education. The following topics are among those considered: eligibility for special education, program types, alternative placements (such as residential settings), referral, evaluation,…

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

473

Relación del polimorfismo C-514T del gen de la lipasa hepática con indicadores nutricionales y lipoproteínas en una muestra poblacional peruana: una perspectiva nutrigenética Relation of the hepatic lipase gene C-514T polymorphism with nutritional indicators and lipoproteins in a Peruvian population sample: a nutrigenetic perspective  

Microsoft Academic Search

Introduction: Cardiovascular diseases are major causes de death in the world. The hepatic lipase (HL) gene promoter region presents a C-514T functional polymorphism related to enzyme activity, variation of lipoproteins levels and possible cardiovascular disease risk. Objectives: To determine the association of HL gene promoter region polymorphism with both nutritional indicators and lipoproteins levels in a healthy Peruvian sample. Design:

Doris Huerta; Oscar Acosta; Cecilia Miranda; Susan Polo; Raquel Oré; Amelia Bardales; Jaime Pajuelo

474

EFEITOS DA ADUBAÇÃO ORGÂNICA E DA ÉPOCA DE COLHEITA NA QUALIDADE DA MATÉRIA-PRIMA E NOS RENDIMENTOS AGRÍCOLA E DE AÇÚCAR MASCAVO ARTESANAL DE DUAS CULTIVARES DE CANA-DE-AÇÚCAR (CANA-PLANTA) Effects of organic fertiliser and harvest date on quality and agricultural yield and of raw-sugar of two sugarcane cultivar (plant cane)  

Microsoft Academic Search

The objective of this work was to study the effects of three fertilizers process (30 t. ha -1 of corral manure, 3,5 t.ha -1 of chicken manure and chemical fertilizer - 120 kg.ha-1 of P 2O5 and of K 2O at planting time + 60 kg.ha -1 of N in covering) and three harvest dates (July, August and September of

Ivan Antônio dos Anjos; Luiz Antônio de Bastos Andrade; Julio César Garcia; Paulo Alexandre; Monteiro de Figueiredo; Gabriel José de Carvalho

475

Louvain-la-Neuve, lundi 24 octobre 2011 Recherche UCL  

E-print Network

pharmacologiques dans les plantes L'UCL participe au programme européen de recherche Pharma-Planta. Lancé en 2004 et à cultiver à grande échelle. Le défi pour Pharma-Planta était de passer de la validation d'anticorps obtenus de manière classique. D'autres aspects du programme de recherche Pharma-Planta ont également

Nesterov, Yurii

476

Produção de hidrolases pelo fungo Dicyma pulvinata, e purificação de uma beta-glucanase do isolado CEN62.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Biologia Celular, 2009. A seringueira (Hevea spp.) é uma planta nativa da região amazônica, da… (more)

Agustinho, Daniel Paiva

2009-01-01

477

Isolamento, identificação fenogenotípica e potencial bioativo de microrganismos endofíticos intrinsecamnete associados à Miconia albicans no Cerrado de São Carlos - SP.  

E-print Network

??Microrganismos endofíticos vivem em associação simbiótica com plantas e habitam nichos biológicos únicos, além de serem potenciais produtores de substâncias naturais bioativas com estrutura química… (more)

Ana Candida Martins Toledo Piza

2009-01-01

478

An unusual cause of a painful plantar mass  

Microsoft Academic Search

Anomalous or accessory muscles in and around the foot and ankle have been reported in 8% of the population. Quadratus plantae muscle is one of the medial anomalous muscles in the foot and is a rare cause of heel pain or mass. This muscle has been implicated in tarsal tunnel syndrome. There is exiguous radiological description of quadratus plantae muscle

Suchi Gaba; Michael Allen; Raj Bhatt

2008-01-01

479

Why Range Forage Quality Changes (Spanish)  

E-print Network

las herb?ceas y arbus- tivas, lo que hace a estas partes de los pastos m?s dif?ciles de digerir. Comparadas con las plantas de crecimiento de verano, las plantas de crecimiento invernal tienen mejor digestibilidad y mayor contenido de prote?- na cruda...

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

2001-09-10

480

Membrane heredity and early chloroplast evolution  

Microsoft Academic Search

Membrane heredity was central to the unique symbiogenetic origin from cyanobacteria of chloroplasts in the ancestor of Plantae (green plants, red algae, glaucophytes) and to subsequent lateral transfers of plastids to form even more complex photosynthetic chimeras. Each symbiogenesis integrated disparate genomes and several radically different genetic membranes into a more complex cell. The common ancestor of Plantae evolved transit

Thomas Cavalier-Smith

2000-01-01

481

INFLUENCE OF NATIVE VEGETATION STRIPS ON PLANTATIONS OF Eucalyptus cloeziana ON POPULATION OF Oxydia vesulia (LEPIDOPTERA: GEOMETRIDAE)  

Microsoft Academic Search

RESUMO - O eucalipto é a espécie florestal mais plantada no Brasil, e por pertencer à família Myrtaceae sofre ataques de insetos que migram de hospedeiros nativos dessa planta, entre os quais Oxydia vesulia (Lepidoptera: Geometridae), espécie responsável por danos significativos a plantas desse grupo, em várias regiões do País. O estabelecimento e a preservação de reservas nativas têm sido

Germi Porto Santos; Teresinha Vinha Zanuncio; Eloisio Vinha; José Cola Zanuncio

2002-01-01

482

Wind-induced mesoscale circulation off the Ebro delta, NW Mediterranean: a numerical study  

NASA Astrophysics Data System (ADS)

It is well known that the general circulation on the Catalan continental slope is dominated by a quasi-permanent southwestward geostrophic jet associated to the so-called Catalan front [Millot, C., 1987. Circulation in the western Mediterranean sea. Oceanol Acta 10, 143-149; Font, J., Salat, J., Tintoré, J., 1988. Permanent features of the circulation in the Catalan Sea. Oceanol. Acta 9, 51-57]. On the continental shelf, however, the flow is modified by the action of friction which enhances also other nonlinear interactions. Several authors have hypothesized that the shelf circulation is anticyclonic north of the Ebro delta [Salat, J., Manriquez, M., Cruzado, A., 1978. Hidrografia del golfo de Sant Jordi. Campaña Delta (Abril 1970). Investigación Pesquera 42 (2), 255-272; Ballester, A., Castellv?´, J., 1980. Estudio hidrográfico y biológico de las plataformas continentales españolas: I. Efecto de los efluentes de una planta de energ?´a nuclear en el Golfo de San Jorge (Febrero 1975-Octubre 1976). Informes Técnicos del Instituto de Investigaciones Pesqueras 76, 70 pp.]. A quasi-3D finite element code based on the shallow-water equations has been used to explore the effect of several mechanisms which might be responsible for such a local circulation pattern, and in particular of wind. The obtained numerical results suggest that the basic anticyclonic structure of the mean flow is controlled by the bathymetry and that the clockwise-rotating mean flow pattern is not a permanent circulation feature. It is seen that the characteristic local wind stress fields—computed through interpolation of the records of a local network of meteo stations—may `enhance' or `delete' the anticyclonic gyre depending on the sign of their relative vorticity. According to the analysis of a 2-yr record of local wind data, the net contribution of wind events with a duration longer than 24 h is to reinforce the anticyclonic circulation (over 70% of these wind fields supply negative relative vorticity to the study area).

Espino, M.; Arcilla, A.-S.; García, M. A.

1998-10-01

483

Patrones de caza y éxito de captura de una población de águila pescadora (Pandion haliaetus) en Bahía Magdalena, Baja California Sur, México Hunting patterns and success of an osprey (Pandion haliaetus) population at Magdalena Bay, Baja California Sur, Mexico  

Microsoft Academic Search

In late autumn 2004 we studied the effect of water surface condition, wind speed, and tidal status on the hunting patterns (flapping, gliding, hovering) and hunting success of the osprey population at Magdalena Bay, Baja California Sur, Mexico. Through focal sightings we obtained the number of hunting dives, hunting length, and the proportion of hunting length invested in each pattern.

A Castellanos-Vera; E River

484

Mycobacteriosis in Wild Birds: the Potential risk of Disseminating a Little-known Infectious Disease Micobacteriosis en aves silvestres: Riesgo potencial de diseminación de una infección poco conocida en el mundo  

Microsoft Academic Search

Avian mycobacteriosis is important for animal and human health; wild birds play an important role in mycobacterial species' ecology and movement. This review was aimed at reporting the role of birds in the spread of avian mycobacteriosis in human and animal populations at risk and thus a systematic review was made of PubMed, Science Direct, Scielo and Scirus databases. Mycobacteria

Diego Soler; Claudia Brieva; Wellman Ribón

2009-01-01

485

CARACTERIZACIÓN PRELIMINAR DE UNA COLECCIÓN DE LEGUMINOSAS FORRAJERAS ANUALES PARA LA ZONA MEDITERRÁNEA DE CHILE1 Preliminary characterization of annual forage legumes collection for the Mediterranean area of Chile1  

Microsoft Academic Search

A B S T R A C T In the Instituto Nacional de Investigaciones Agropecua- rias (INIA), Centro Experimental Cauquenes (35º58` S lat; 72º17` W long), VII Region, phenologic and agronomic traits of 35 accessions and cultivars of annual legumes were evaluated. The species studied were Biserrula pelecinus (3 accessions), Medicago polymorpha (1), Ornithopus compressus (9), Orni- thopus sativus (2),

Carlos Ovalle; Julia Avendaño

486

PROTOTIPO A PEQUEÑA ESCALA DE UNA NEVERA SOLAR: PRIMEROS RESULTADOS (Prototype in a small scale of a solar refrigerador: first results) CIENCIA Y SOCIEDAD Volumen XXXIII, Número 2 Abril-Junio 2008  

Microsoft Academic Search

With the purpose of verifying the possibility of operation of a solar refrigerador by adsortion with a cooling pair (metanol-activated carbon), we designed and built a prototype in a small scale, simulating the energy received from the sun, by electrical resistances. In the test we performed, a temperature of 4.9 oC was obtained. This result is very promising, in so

Inna Samson; Rodolfo Echarri; Claudio El Hasi

487

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

, y fiel a sus orientaciones hacia la liberalización de los mercados (de tierras, en este caso identidad permite re-evaluar el lugar respectivo de los actores locales - campesinos, indios, negros, Estado el impulso a un mercado de tierras para los pequeños campesinos que deben entonces asumir

Paris-Sud XI, Université de

488

B P C O,PATOLOGIA POLMONARE E SISTEMICA:E F F I C ACIA DOSE DIPENDENTE DELLA N-ACETILCISTEINA SULL' E VOLUZIONE DELLA MALAT T I A. Studio clinico controllato su una popolazione di sesso femminile  

Microsoft Academic Search

The Authors evaluated the efficacy of N-Acetyl cysteine (NAC) at a dosage of 1200 mg on re s p i r a t o ry functionality parameters, v i s c o s i m e t ry of the expectoration and systemic ox i d a t i ve carico versus NAC 600 mg, making re f e rence

Roberto Cogo; Alessandro Ramponi; Tiziano Motta

489

Jovenes con Discapacidades y Enfermedades Cronicas: Una Guia Introductoria para Joyenes y Padres. Revisiones de CYDLINE (Youth with Disabilities and Chronic Illnesses: An Introductory Guide for Youth and Parents. CYDLINE Reviews). Parents. CYDLINE Reviews.  

ERIC Educational Resources Information Center

This bibliography covers a wide range of issues related to the needs of adolescents and young adults with chronic illnesses and disabilities and their families. For each item in the bibliography, information provided includes author, title, source, date, and abstract. Price information is given when available. Materials include books, audiotapes,…

Minnesota Univ., Minneapolis. National Center for Youth with Disabilities.

490

Pautas para Organizar Una Actividad de Capacitacion: Un Seminario-Taller para el Desarrollo de Personal de Direccion de Sistemas Educativos (Guidelines to Organize a Training Activity: A Workshop for Management Development of Educational Systems).  

ERIC Educational Resources Information Center

Often personnel performing managerial functions within educational systems are educators with almost no training in management. This paper presents ideas on how to organize a training activity intended to develop management knowledge and skills among educational systems officials and to implement an organizational self-study on management…

Valle, Victor M.

491

A MODEL TO DESCRIBE THE ADSORPTION AND REDUCTION OF Cr (VI) FROM AN AQUEOUS SOLUTION BY AGAVE LECHUGUILLA BIOMASS UN MODELO PARA DESCRIBIR LA ADSORCION Y REDUCCION DE Cr (VI) DE UNA SOLUCION ACUOSA POR BIOMASA DE AGAVE LECHUGUILLA  

Microsoft Academic Search

The biosorption and reduction of Cr (VI) onto packed columns of Agave lechuguilla were analyzed using an advection-dispersion with a first order reaction (ADR) model and its analytical solution. Design parameters, such as an axial dispersion coefficient, a retardation factor, a distribution coefficient, and a general first-order decay constant, were estimated as functions of inlet metal ion concentration, pH, operation

J. Romero-González; I. Cano-Rodríguez; J. C. Walton; J. R. Peralta-Vide; E. Rodríguez

2005-01-01

492

DATOS PARA EL DESARROLLO DE UNA RED INTEGRADA DE SEGUIMIENTO DE LA CALIDAD DE SUELOS EN GALICIA (N.O. DE ESPAÑA): BALANCES GEOQUÍMICOS EN SUELOS FORESTALES (Pinus radiata). 1. APORTES DE ELEMENTOS POR DEPOSICIÓN ATMOSFÉRICA Y HOJARASCA  

Microsoft Academic Search

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

M. X. GÓMEZ-REY; R. CALVO DE ANTA

493

Sequa e inundacin en la hiperllanura pampeana. Una mirada desde el lote al municipio 71agronomaagronomaagronomaagronomaagronoma&&&&&ambienteambienteambienteambienteambiente REV. FACULTAD DE AGRONOMA UBA, 33(1-2): 71-77, 2013  

E-print Network

, Universidad Nacional de La Pampa; 5 Instituto Nacional del Agua; 6 Departamento de Ingeniería, Universidad de Buenos Aires; 7 Instituto de Clima y Agua, CIRN-INTA; 8 Facultad de Agronomía, Universidad de Buenos, Argentina. 33 (1-2) INTRODUCCI�N En la Región Pampeana la lluvia, y su elevada variabilidad, es la principal

Nacional de San Luis, Universidad

494

Vino, turismo e innovación: Las Rutas del Vino de España, una estrategia integrada de desarrollo rural\\/Wine, Tourism and Innovation: The Wine Routes of Spain, an Integrated Strategy of Rural Development  

Microsoft Academic Search

La importancia del viñedo en la economía agraria a lo largo de la historia es incuestionable. La búsqueda de la calidad de los vinos en un mercado cada vez más competitivo y globalizado es un objetivo de todas las comarcas vitícolas del mundo. En este contexto, el afán por innovar y ofrecer al consumidor productos más diversificados y complementarios al

BELEN MIRANDA ESCOLAR; RICARDO FERNÁNDEZ MORUECO

2011-01-01

495

Asignación de ayudas públicas mediante ELECTRE-TRI. Una apliación al turismo rural en Galicia\\/Methodology for the Distribution of Public Aids: a Application for the Rural Tourism in Galicia  

Microsoft Academic Search

El turismo rural ha tenido un desarrollo muy importante en los últimos años en España, el cual ha estado impulsado en cierta medida por las ayudas concedidas por las distintas administraciones. En este trabajo se aplica el método de superación ELECTRE-TRI al reparto de ayudas públicas relativas a proyectos de turismo rural presentados en Galicia en el año 2001. Los

FIDEL MARTÍNEZ ROGET; XOSÉ ANTÓN RODRÍGUEZ GONZÁLEZ

2005-01-01

496

La Desercion Escolar en los Niveles de Sexto y Noveno Grado: Una Comparacion Entre Zonas Rurales y Urbanas. Boletin 219 (The Educational Desertion in the 6th and 9th Grades: A Comparison Between Rural and Urban Zones. Bulletin 219).  

ERIC Educational Resources Information Center

In 1962 and again in 1965, a group of sixth and ninth grade students in selected schools in four Puerto Rican communities were interviewed to investigate the factors influencing students' decision to withdraw from school before completing twelfth grade and to identify some characteristics of dropouts. Of 616 students interviewed in 1962, 20.9% of…

Lopez, Maria I. Hernandez; And Others

497

The Relationship between Business Ownership and Unemployment in Spain: A Matter of Quantity or Quality?\\/La relación entre el autoempleo y el desempleo en España: Una cuestión de cantidad o de calidad?  

Microsoft Academic Search

This paper examines the interrelations between self-employment and unemployment rates for Spain in the period 1972-2004, comparing them with the general pattern observed for OECD countries. We apply the model as proposed by Audretsch, Carree, van Stel and Thurik (2005) to Spain. The divergence between predicted and actual unemployment levels in Spain are explained by countryspecific shocks in the period

INGRID VERHEUL; ANDRÉ VAN STEL; ROY THURIK; DAVID URBANO

2006-01-01

498

Analisi dei costi nella sclerosi sistemica. Studio retrospettivo in una casistica di 106 pazienti Cost-of-illness in systemic sclerosis: a retrospective study of an italian cohort of 106 patients  

Microsoft Academic Search

SUMMARY Aims: It is increasingly important to determine the economic consequences of diseases considering the policy of lim- ited health-care budgets. In this study we evaluated the annual direct and indirect costs of Systemic Sclerosis (SSc) and we tried also to identify any cost predictors. Methods: We studied 106 patients (103 female, 3 male), 57 affected by Limited Systemic Sclerosis

A. Belotti Masserini; S. Zeni; R. Cossutta; A. Soldi; F. Fantini

499

Kathy Attends a Mother-to-Mother Support Group Meeting. Mother-to-Mother Support = Josefa Asiste a una Reunion de Grupo de Apoyo de Madre a Madre. Apoyo Madre a Madre.  

ERIC Educational Resources Information Center

These magazine-sized booklets, one in English, one in Spanish, are in cartoon format and designed to be used by people with limited literacy in English or Spanish. This booklet explains what a mothers' support group is, and that mothers share experiences and information about breastfeeding, invite friends and relatives to attend, and is…

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

500

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

E-print Network

redes sociales digitales en amplios sectores de la sociedad han venido impactando la forma (y el fondo Estado en relación a su enraizamiento social y capacidad infraestructural. Destacando este aspecto menos actores sociales, sino planteando algunas preguntas relevantes" (Castells, La era de la Información. La

Paris-Sud XI, Université de