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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.


Evolutionary Relationships Within the Species-Rich Genus Ruellia (Acanthaceae)  

Microsoft Academic Search

Phylogenetic relationships among species of the large genus Ruellia (Acanthaceae) have never been studied. Ruellia, with approximately 300 species, is geographically widespread and morphologically diverse. Molecular data for 196 specimens from the nuclear ribosomal ITS region and the chloroplast trnG-trnR region were used to test monophyly of the genus against closely related genera in Ruellieae, to reconstruct phylogenetic relationships among

Erin A. Tripp



Local adaptation of Ruellia nudiflora (Acanthaceae) to biotic counterparts: complex scenarios revealed when two herbivore  

E-print Network

Local adaptation of Ruellia nudiflora (Acanthaceae) to biotic counterparts: complex scenarios; Ruellia nudiflora; seed predation; spatial variation. Abstract This study evaluated whether the herb Ruellia nudiflora is locally adapted to a specialist insect seed predator (SP) and insect folivores

Herrera, Carlos M.


Palynological study of the genera Ruellia, Ecbolium, Asystasia, Blepharis and Dicliptera (Acanthaceae) of Yemen  

SciTech Connect

Pollen morphology of five genera of the family Acanthaceae, namely Ruellia, Blepharis, Asystasia, Ecbolium and Dicliptera (Acanthaceae) of Yemen has been examined using light and scanning electron microscope. Pollen descriptions were provided with two shapes distinguished, spheroidal and prolate. Most of the pollen grains were tricolporate amd psuedocolpi except those of Blepharis which are colpate. The surface is coarsely reticulate, in addition to the lumina that varies in size.

Al-Hakimi, S. Anisa [School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia and Biology Department, Faculty of Science, Taiz University, Taiz (Yemen); Maideen, Haja; Latiff, A. [School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor (Malaysia)




Microsoft Academic Search

We used sequence data from the intron and spacer of the trnL-trnF chloroplast region to study phylogenetic relationships among Acanthaceae. This region is more variable than other chloroplast loci that have been sequenced for members of Acanthaceae (rbcL and ndhF), is more prone to length mutations, and is less homoplasious than these genes. Our results indicate that this region is



Origin of African Physacanthus (Acanthaceae) via Wide Hybridization  

PubMed Central

Gene flow between closely related species is a frequent phenomenon that is known to play important roles in organismal evolution. Less clear, however, is the importance of hybridization between distant relatives. We present molecular and morphological evidence that support origin of the plant genus Physacanthus via “wide hybridization” between members of two distantly related lineages in the large family Acanthaceae. These two lineages are well characterized by very different morphologies yet, remarkably, Physacanthus shares features of both. Chloroplast sequences from six loci indicate that all three species of Physacanthus contain haplotypes from both lineages, suggesting that heteroplasmy likely predated speciation in the genus. Although heteroplasmy is thought to be unstable and thus transient, multiple haplotypes have been maintained through time in Physacanthus. The most likely scenario to explain these data is that Physacanthus originated via an ancient hybridization event that involved phylogenetically distant parents. This wide hybridization has resulted in the establishment of an independently evolving clade of flowering plants. PMID:23383261

Tripp, Erin A.; Fatimah, Siti; Darbyshire, Iain; McDade, Lucinda A.




Microsoft Academic Search

Ruellia simplex, an older and overlooked name for Ruellia tweediana and Ruellia coerulea (Acanthaceae). Darwiniana 45(2): 201-203. Ruellia simplex, the name of a species of Ruellia described from Cuba in 1870, is the oldest name for the neotropical species generally known as Ruellia tweediana, Ruellia coerulea and Ruellia mala- cosperma. Therefore Ruellia simplex has priority and reduces tha latter names

Cecilia Ezcurra; Thomas F. Daniel; Río Negro



A new species, new combinations, and a new name in Acanthaceae from northern South America  

Microsoft Academic Search

A new species of Acanthaceae (Ruellia saülensis) is described and illustrated from French Guiana, and three new combinations (Justicia potarensis, J. flaviflora, andJ. tobagensis) and one new name (Justicia coppenamensis) are proposed. The new species is compared to its closest relative (Ruellia rubra), and a justification of the transfers is provided.

Dieter C. Wasshausen



Comparative floral anatomy of Strobilanthinae (Acanthaceae), with particular reference to internal partitioning of the flower  

Microsoft Academic Search

This paper provides the first comparative survey of structural variation in inflorescence architecture and flower structure of Hemigraphis and other members of the subtribe Strobilanthinae (Acanthaceae). Several discrete structural characters are identified which may provide support for phylogenetic relationships within the group. These include (1) the presence or absence of an accessory bud, (2) the presence or absence of a

E. C. Moylan; P. J. Rudall; R. W. Scotland



Anti-Inflammatory and Antipyretic Activities of Hygrophila spinosa T. Anders Leaves (Acanthaceae)  

Microsoft Academic Search

Purpose: Hygrophila spinosa T. Anders (Acanthaceae) is commonly used in the traditional system of medicine for the treatment of inflammation, pain, jaundice, rheumatism, arthritis, anaemia, etc. In the present study, we investigated the anti-inflammatory and antipyretic activities of the petroleum ether, chloroform, alcoholic and aqueous extracts of the leaf of this plant. Methods: The anti-inflammatory activity of the various extracts

Arjun Patra; Shivesh Jha; P. Narasimha Murthy; Pronobesh Chattopadhyay; Ghanshyam Panigrahi; Devdeep Roy



Microsoft Academic Search

2 RESUMEN Se estudia e ilustra la morfología del polen de las familias Acanthaceae, Vitaceae y Violaceae pertenecientes a la flora del Valle de México; la primera está representada por: Acanthus mollis L., Anisacanthus quadrifidus (Vahl) Standley, Dicliptera peduncularis Nees, Dyschoriste decumbens (Gray) O. Ktze., D. microphylla (Cav.) O. Ktze., Justicia furcata Jacq., Pseuderanthemum praecox (Benth.) Leonard, Ruellia bourgaei Hemsl.,



Purple anthocyanin colouration on lower (abaxial) leaf surface of Hemigraphis colorata (Acanthaceae).  


The functional significance of anthocyanin colouration of lower (abaxial) leaf surfaces is not clear. Two anthocyanins, 5-O-methylcyanidin 3-O-(3?-(?-glucuronopyranosyl)-?-glucopyranoside) (1) and 5-O-methylcyanidin 3-O-?-glucopyranoside (2), were isolated from Hemigraphis colorata (Blume) (Acanthaceae) leaves with strong purple abaxial colouration (2.2 and 0.6mg/gfr.wt., respectively). The glycosyl moiety of 1, the disaccharide 3?-(?-glucuronopyranosyl)-?-glucopyranoside), has previously been reported to occur only in a triterpenoid saponin, lindernioside A. The structural assignment of the aglycone of 1 and 2 is the first complete characterisation of a natural 7-hydroxy-5-methoxyanthocyanidin. Compared to nearly all naturally occurring anthocyanidins, the 5-O-methylation of this anthocyanidin limits the type of possible quinoidal forms of 1 and 2 to be those forms with keto-function in only their 7- and 4'-positions. PMID:24957301

Skaar, Irene; Adaku, Christopher; Jordheim, Monica; Byamukama, Robert; Kiremire, Bernard; Andersen, Øyvind M



Purple anthocyanin colouration on lower (abaxial) leaf surface of Hemigraphis colorata (Acanthaceae)  

PubMed Central

The functional significance of anthocyanin colouration of lower (abaxial) leaf surfaces is not clear. Two anthocyanins, 5-O-methylcyanidin 3-O-(3?-(?-glucuronopyranosyl)-?-glucopyranoside) (1) and 5-O-methylcyanidin 3-O-?-glucopyranoside (2), were isolated from Hemigraphis colorata (Blume) (Acanthaceae) leaves with strong purple abaxial colouration (2.2 and 0.6 mg/g fr. wt., respectively). The glycosyl moiety of 1, the disaccharide 3?-(?-glucuronopyranosyl)-?-glucopyranoside), has previously been reported to occur only in a triterpenoid saponin, lindernioside A. The structural assignment of the aglycone of 1 and 2 is the first complete characterisation of a natural 7-hydroxy-5-methoxyanthocyanidin. Compared to nearly all naturally occurring anthocyanidins, the 5-O-methylation of this anthocyanidin limits the type of possible quinoidal forms of 1 and 2 to be those forms with keto-function in only their 7- and 4?-positions. PMID:24957301

Skaar, Irene; Adaku, Christopher; Jordheim, Monica; Byamukama, Robert; Kiremire, Bernard; Andersen, Øyvind M.



LC-DAD-MS-based metabolite profiling of three species of Justicia (Acanthaceae).  


Olean-12-en-3?-24 diol (A), auranamide (B), aurantiamide acetate (C), 2?,3?-dihydroxy-olean-12-en-28-oic acid (D) and quindoline (E) were isolated from the dichloromethane (CH2Cl2) extract of the stems of Justicia secunda (Acanthaceae). Liquid chromatography with ultraviolet and mass spectrometric detection was used to acquire more knowledge of the chemical composition of this extract and to monitor variations in profiles of both the isolated and the other non-identified compounds in Justicia refractifolia and Justicia graciliflora. The compound classes, phenolic and olefinic amides, feruloyltyramine amides, 2,5-diaryl-3,4-dimethyltetrahydrofuranoid lignans, peptide alkaloids, phenylalanine derivatives, conjugated ynones, indolquinoline alkaloids, triterpenes and pigments, were tentatively identified based on the LC-DAD-APCI-MS analysis. The most frequently encountered compound among the species was auranamide while the distribution of quindoline was limited to J. secunda. Moreover, the acetylcholinesterase inhibitory activity of the isolated compounds was determined. PMID:23126522

Calderón, Angela I; Hodel, Adam; Wolfender, Jean-Luc; Gupta, Mahabir P; Correa, Mireya; Hostettmann, Kurt



Part 1: Antiplasmodial, cytotoxic, radical scavenging and antioxidant activities of Thai plants in the family Acanthaceae.  


Crude extracts (CH(2)Cl(2) and MeOH) of 20 plants in the family Acanthaceae were screened for their antiplasmodial, cytotoxic, antioxidant, and radical scavenging activities. These plants included Asystasia nemorum, Barleria cristata, B. strigosa, Dicliptera burmanni, Eranthemum tetragonum, Hygrophila ringens, Justicia balansae, J. procumbens, Lepidagathis incurva, Peristrophe lanceolaria, Phaulopsis dorsiflora, Ruellia kerrii, Strobilanthes auriculata, S. corrugata, S. cusia, S. dimorphotricha, S. karensium, S. maxwellii, S. pateriformis, and S. brandisii. CH(2)Cl(2) extracts of A. nemorum, S. corrugata, S. cusia, S. maxwellii, S. pateriformis, and S. brandisii, as well as MeOH extracts of J. balansae and J. procumbens, showed antiplasmodial activity with IC(50) values of 10-100?µg/mL. CH(2)Cl(2) extracts of nine plants including D. burmanni, H. ringens, J. balansae, J. procumbens, L. incurva, P. lanceolaria, P. dorsiflora, S. corrugata, and S. maxwellii showed cytotoxic activity with IC(50) values of 3.5-46.0?µg/mL. MeOH extracts (at 100 µg/mL) of R. kerrii and S. auriculata could effectively scavenge DPPH free radicals (82-83% inhibition) and superoxide anion radicals (79% and 88% inhibition). In the ORAC antioxidant assay, MeOH extracts of B. cristata, J. procumbens, R. kerrii, and S. auriculata exhibited activity with ORAC units of 3.1-3.9. PMID:20556707

Charoenchai, Panarat; Vajrodaya, Srunya; Somprasong, Winai; Mahidol, Chulabhorn; Ruchirawat, Somsak; Kittakoop, Prasat



Taxonomic significance of leaf micromorphology in some selected taxa of Acanthaceae (Peninsular Malaysia)  

NASA Astrophysics Data System (ADS)

Comparative leaf micromorphology study was conducted in eight taxa of Acanthaceae from Peninsular Malaysia. Eight chosen taxa were Acanthus ebracteatus Vahl, A. ilicifolius L., A. volubilis Wall, A. montanus T. Anderson, Andrographis paniculata (Burm.f.) Wall. ex Nees, Asystasia gangetica subsp. micrantha (Nees) Ensermu, Chroesthes longifolia (Wight) B. Hansen and Peristrophe roxburghiana (Schult.) Bremek. The objective of this study was to identify the leaf micromorphological characteristics that can be used in species identification and also as supportive data in classification. The procedures involved such as dehydration, critical point drying, gold coated and examination under scanning electron microscope. Findings in this study have demonstrated the similarities and variations in leaf micromorphological characteristics such as in type of epicuticular waxes, cuticular ornamentations, stomata characteristics and in the presence of trichomes. Six types of epicuticular waxes and five types of trichomes were observed. Variations in cuticular ornamentations and stomata structure can be used to differentiate species. One diagnostic character was found and proven to be very useful to identify Acanthus via the presence of simple trichomes (short-conicle like). In conclusion, the results of this study have shown that leaf micromorphological characteristics have taxonomic significance that can be useful in classifications and identification especially at species level.

Nurul-Aini, C. A. C.; Noraini, T.; Latiff, A.; Amirul-Aiman, A. J.; Ruzi, A. R.; Idris, S.



Vasorelaxant effects of Brillantaisia nitens Lindau (Acanthaceae) extracts on isolated rat vascular smooth muscle.  


Brillantaisia nitens Lindau (Acanthaceae) is traditionally used in Cameroon for the treatment of many diseases including cardiovascular disorders. We have studied its vasorelaxant effects in rat vascular smooth muscle. In this study, aqueous, methylene chloride, methanol, and methylene chloride/methanol leaves extracts of Brillantaisia nitens were tested for their relaxing ability in vitro. Strips of rat aorta, with or without intact endothelium, were mounted in tissue baths, contracted with KCl (60mM) or norepinephrine (10(-4)M), and then exposed to the plant extracts. These extracts exhibited concentration-dependent vasorelaxations of norepinephrine-induced contractions of intact aortic strips. The EC(50) were 0.42+/-0.01mg/ml (aqueous extract), 0.63+/-0.02mg/ml (methylene chloride extract), 0.73+/-0.02mg/ml (methanol extract) and 0.36+/-0.02mg/ml (methylene chloride/methanol extract). The methylene chloride/methanol (CH(2)Cl(2)/CH(3)OH) extract was the most potent relaxing extract. It caused a concentration-dependent and endothelium-independent relaxation of the rat aortic strips contracted by KCl or norepinephrine. On the NE-induced contraction, its maximal relaxant activity (109%) due to the dose of 1.5mg/ml, was not significantly modified by the pretreatment of aortic strips with indomethacin (89%, P>0.05) or with l-NAME (103%, P>0.05). This suggests that the vasorelaxation elicited by CH(2)Cl(2)/CH(3)OH extract was not mediated via endothelium-derived prostacyclin or nitric oxide. In contrast, this relaxation was markedly reduced by tetraethylammonium, a blocker of non-selective K(+) channels and glibenclamide, a blocker of ATP-sensitive K(+) channels. The CH(2)Cl(2)/CH(3)OH extract significantly inhibited Ca(2+)-induced concentration-contraction and the Ca(2+) influx in aortic strips incubated with 60mM KCl. These results indicate that the vasorelaxant effect of the CH(2)Cl(2)/CH(3)OH extract of Brillantaisia nitens is due to an inhibition of Ca(2+) influx, possibly via the activation of ATP-sensitive K(+) channels. PMID:17250985

Dimo, T; Mtopi, O-S Bopda; Nguelefack, T B; Kamtchouing, P; Zapfack, L; Asongalem, E A; Dongo, E



Taxonomic notes on Mexican Ruellia (Acanthaceae)  

Microsoft Academic Search

The new nameRuellia comonduensis is provided for the species previously known asR. cordata Brandegee.Ruellia chilpancingana, a new species known only from Guerrero in southwestern Mexico, is described and compared to morphologically similar species.\\u000a It is unique among Mexican species ofRuellia based on the following combination of characters: caducous bracteoles and secondary bracteoles, multiflowered dichasia from\\u000a leaf axils, yellowish and cylindric-funnelform

Thomas F. Daniel




Microsoft Academic Search

Dyschoriste novogaliciana is described and illustrated. It is known from four states in western Mexico, and has been collected numerous times in the Nueva Galicia region. A key to all species of Dyschoriste in the Nueva Galicia region of west-central Mexico is provided. Ruellia leucantha var. postinsularis is elevated to the rank of subspecies. It differs from R. leucantha subsp.

Thomas F. Daniel


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



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



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



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



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


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



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


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



New species of Ruellia (Acanthaceae) from southern South America  

Microsoft Academic Search

Two new species ofRuellia,R. epallocaulos from northeastern Argentina, southern Brazil, and eastern Paraguay, andR. kleinii from southern Brazil, are described, illustrated and compared to related species.

Cecilia Ezcurra; Dieter C. Wasshausen



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



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



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


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


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.



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



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


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


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



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



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




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



"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


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


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


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



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


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



Artificial interspecific hybridization in temperate and tropical species of ruellia (acanthaceae)  

Microsoft Academic Search

Artificial hybridization experiments involving 25 taxa ofRuellia had as one objective to determine the possibility of any genetic relationships between North American temperate species and\\u000a certain widespread tropical American taxa. The results confirm a close morpho-genetic link betweenR. caroliniensis-R. pedunculata and the Caribbean species R.geminiflora and betweenR. nudiflora and the pantropical R.tuberosa. A second objective was to test the genetic

Robert W. Long



In vitro purgative effect of Ruellia praetermissa. Sceinf.ex.Lindau (Acanthaceae)  

Microsoft Academic Search

Methanol, ethylacetate and aqueous extracts of Ruellia praetermissa initiated spontaneous contractions in the quiescent and increased contraction on the electrically stimulated ileal strip at a concentration of 30 ?g\\/ml. The extracts produced concentration-related contractions both in amplitude and tone up till 750 ?g\\/ml with IC50 of 360 ?g\\/ml (methanol extract), 425 ?g\\/ml (ethylacetate extract) and 540 ?g\\/ml (aqueous extract). Acetylcholine

A. M Salah; A. B Dongmo; A Kamanyi; M Bopelet; W Vierling; H Wagner



Generalization versus specialization in pollination systems: visitors, thieves, and pollinators of Hypoestes aristata (Acanthaceae).  


Many recent studies have suggested that the majority of animal-pollinated plants have a higher diversity of pollinators than that expected according to their pollination syndrome. This broad generalization, often based on pollination web data, has been challenged by the fact that some floral visitors recorded in pollination webs are ineffective pollinators. To contribute to this debate, and to obtain a contrast between visitors and pollinators, we studied insect and bird visitors to virgin flowers of Hypoestes aristata in the Bamenda Highlands, Cameroon. We observed the flowers and their visitors for 2-h periods and measured the seed production as a metric of reproductive success. We determined the effects of individual visitors using 2 statistical models, single-visit data that were gathered for more frequent visitor species, and frequency data. This approach enabled us to determine the positive as well as neutral or negative impact of visitors on H. aristata's reproductive success. We found that (i) this plant is not generalized but rather specialized; although we recorded 15 morphotaxa of visitors, only 3 large bee species seemed to be important pollinators; (ii) the carpenter bee Xylocopa cf. inconstans was both the most frequent and the most effective pollinator; (iii) the honey bee Apis mellifera acted as a nectar thief with apparent negative effects on the plant reproduction; and (iv) the close relationship between H. aristata and carpenter bees was in agreement with the large-bee pollination syndrome of this plant. Our results highlight the need for studies detecting the roles of individual visitors. We showed that such an approach is necessary to evaluate the pollination syndrome hypothesis and create relevant evolutionary and ecological hypotheses. PMID:23593135

Padyšáková, Eliška; Bartoš, Michael; Tropek, Robert; Jane?ek, St?pán



A synopsis of Costa Rican Ruellia (Acanthaceae), with descriptions of four new species  

Microsoft Academic Search

We describe four new species of Ruellia from Costa Rica; three from the Osa Peninsula, Puntarenas province (R. exilis, R. mira, R. odorata), and one from the southwestern corner of San José province (R. norvegigratiosa). Ruellia matagalpae is reported as a new record for the country. New combinations are made in Ruellia for the two Costa Rican species of Blechum

Lucinda A. McDade; Erin A. Tripp



A new name and a new species in Mexican Ruellia ( Acanthaceae )  

Microsoft Academic Search

Based on pollen and floral morphology,Blechum grandiflorum is transferred toRuellia, and the nameR. mirandana is proposed for this species. A new species,Ruellia tuxtlensis, is described which is distinguishable fromR. mirandana by its longer spike and elliptic bracts. It is presently known only from the lowlands of Veracruz, Mexico.

T. P. Ramamoorthy; Yolanda Hornelas Uribe



Genetic variation in the response of the weed Ruellia nudiflora (Acanthaceae) to arbuscular mycorrhizal fungi  

Microsoft Academic Search

The main goal of this work was to test for plant genetic variation in the phenotypic plasticity response of the weed Ruellia nudiflora to arbuscular mycorrhizal (AM) fungi inoculation. We collected plants in the field, kept them under homogeneous conditions\\u000a inside a nursery, and then collected seeds from these parent plants to generate five inbred lines (i.e., genetic families).\\u000a Half

José Alberto Ramos-Zapata; María José Campos-Navarrete; Víctor Parra-Tabla; Luis Abdala-Roberts; Jorge Navarro-Alberto



Ruellia sect. Urceolata ( Acanthaceae ), a novel species complex from southern Mexico  

Microsoft Academic Search

A new section in MexicanRuellia, R. sect.Urceolata comprising three species (includingR. cedilloi, spec. nova), endemic to Mexico, is described and illustrated. The taxonomic relationship and differentiation of the species are discussed. Evolution in Mexican Ruellas seems to be occurring at the diploid level.

T. P. Ramamoorthy



Generalization versus Specialization in Pollination Systems: Visitors, Thieves, and Pollinators of Hypoestes aristata (Acanthaceae)  

PubMed Central

Many recent studies have suggested that the majority of animal-pollinated plants have a higher diversity of pollinators than that expected according to their pollination syndrome. This broad generalization, often based on pollination web data, has been challenged by the fact that some floral visitors recorded in pollination webs are ineffective pollinators. To contribute to this debate, and to obtain a contrast between visitors and pollinators, we studied insect and bird visitors to virgin flowers of Hypoestes aristata in the Bamenda Highlands, Cameroon. We observed the flowers and their visitors for 2-h periods and measured the seed production as a metric of reproductive success. We determined the effects of individual visitors using 2 statistical models, single-visit data that were gathered for more frequent visitor species, and frequency data. This approach enabled us to determine the positive as well as neutral or negative impact of visitors on H. aristata’s reproductive success. We found that (i) this plant is not generalized but rather specialized; although we recorded 15 morphotaxa of visitors, only 3 large bee species seemed to be important pollinators; (ii) the carpenter bee Xylocopa cf. inconstans was both the most frequent and the most effective pollinator; (iii) the honey bee Apis mellifera acted as a nectar thief with apparent negative effects on the plant reproduction; and (iv) the close relationship between H. aristata and carpenter bees was in agreement with the large-bee pollination syndrome of this plant. Our results highlight the need for studies detecting the roles of individual visitors. We showed that such an approach is necessary to evaluate the pollination syndrome hypothesis and create relevant evolutionary and ecological hypotheses. PMID:23593135

Padyšáková, Eliška; Bartoš, Michael; Tropek, Robert; Jane?ek, Št?pán



Evaluation of Antioxidant Properties of Phaulopsis fascisepala C.B.Cl. (Acanthaceae)  

PubMed Central

The antioxidant activities of crude extract of Phaulopsis fascisepala leaf were evaluated and compared with ?-tocopherol and BHT as synthetic antioxidants and ascorbic acid as natural-based antioxidant. In vitro, we studied its antioxidative activities, radical-scavenging effects, Fe2+-chelating ability and reducing power. The total phenolic content was determined and expressed in gallic acid equivalent. The extract showed variable activities in all of these in vitro tests. The antioxidant effect of P. fascisepala was strongly dose dependent, increased with increasing leaf extract dose and then leveled off with further increase in extract dose. Compared to other antioxidants used in the study, ?-Tocopherol, ascorbic acid and BHT, P. fascisepala leaf extract showed less scavenging effect on ?,?,-diphenyl-?-picrylhydrazyl (DPPH) radical and less reducing power on Fe3+/ferricyanide complex but better Fe2+-chelating ability. These results revealed the in vitro antioxidant activity of P. fascisepala. Further investigations are necessary to verify these activities in vivo. PMID:18955238

Fajana, A.; Orabueze, C. I.; Coker, H. A. B.



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



Contact: DR. UNA ROMAN D'ELIA Graduate Coordinator,  

E-print Network

Contact: DR. UNA ROMAN D'ELIA Graduate Coordinator, 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


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




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



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


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



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


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



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



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


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



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



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


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



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.


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



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: 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


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


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



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


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



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


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



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



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


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



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


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...


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


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



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



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.


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




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



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


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


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

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.


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 Departamento de Inform´atica y Sistemas Grupo de Computaci´on Cient´ifica y Programaci´on Paralela investigacion San Alberto, 14 noviembre 2014 Computaci´on de Altas Prestaciones San Alberto, 14-11-2014 1 / 50

Giménez, Domingo


Local adaptation of Ruellia nudiflora (Acanthaceae) to biotic counterparts: complex scenarios revealed when two herbivore guilds are considered  

Microsoft Academic Search

This study evaluated whether the herb Ruellia nudiflora is locally adapted to a specialist insect seed predator (SP) and insect folivores, and if plant local adaptation (LA) to the former is more likely. A reciprocal transplant experiment was conducted using three sites in Yucatan (Mexico) (n = 864 plants). A third of the plants of each origin were placed at




Antisecretory Action of the Extract of the Aerial Parts of Eremomastax speciosa (Acanthaceae) Occurs through Antihistaminic and Anticholinergic Pathways  

PubMed Central

Objective. The objective of this study was to find out the possible antiulcer mechanism of action of Eremomastax speciosa. Method. Carbachol- and histamine-induced hypersecretion, associated with the pylorus ligation technique, were used in rats. Gastric mucosal ulceration, mucus production, pH, gastric volume, and acidity were measured. Results. Histamine and carbachol raised gastric acidity to 86.50 and 84.80?mEq/L, respectively, in the control rats, and the extracts (200?mg/kg) reduced gastric acidity to 34.60 and 39.00?mEq/L, respectively. Intraduodenal aqueous extract (400?mg/kg) in histamine- and carbachol-treated rats produced significant (P < 0.001) decreases in acid secretion to 28.50 and 28.80?mEq/L, respectively, and 100 percent inhibition of gastric ulceration. Augmented histamine-induced gastric acid secretion (90.20?mEq/L) was significantly reduced to 52.60 and 27.50?mEq/L by the 200 and 400?mg/kg doses of the aqueous extract, respectively. The extract significantly reduced (P < 0.001) the volume of gastric secretion and significantly increased mucus production. The ulcer inhibition potential of the extract significantly dropped to 25–44% (oral extract) and to 29–37% (duodenal extract) in carbachol/indomethacin-treated rats. Conclusion. The aqueous extract of E. speciosa has both cytoprotective and antisecretory effects. The antisecretory effect may involve a mechanism common to both cholinergic and histaminergic pathways. PMID:24695819

André Perfusion, Amang; Tan, Paul V.; Ernestine, Nkwengoua; Barthélemy, Nyasse



Seed germination and seedling survival traits of invasive and non-invasive congeneric Ruellia species (Acanthaceae) in Yucatan, Mexico  

Microsoft Academic Search

We compared requirements for seed germination and seedling establishment for Ruellia nudiflora, an invasive species in Yucatan, Mexico with those of the congeneric non-invasive R. pereducta. Germination and seedling survival rates were higher for R. nudiflora than for R. pereducta under high light. Additionally, the ranges of temperature and water potential that allow germination for R. nudiflora were much broader than those of R. pereducta.

J. Carlos Cervera; Víctor Parra-Tabla



Pollination ecology of Ruellia angustiflora (Ness) Lindau ex Rambo (Acanthaceae) in the Serra da Bodoquena, Mato Grosso do Sul, Brazil  

Microsoft Academic Search

In Brazil, studies focusing on reproductive biology and aspects of pollination in the genus Ruellia have demonstrated common characteristics such as pollination by hummingbird, the predominance of self-fertility and spontaneous self-pollination. The objectives of this study were to describe the floral biology, nectar production, the reproductive system, the effect of pollination intensity and flowering phenology of Ruellia angustiflora, as well

Rogério Rodrigues Faria; Andréa Cardoso Araujo



Influence of multiple factors on plant local adaptation: soil type and folivore effects in Ruellia nudiflora (Acanthaceae)  

Microsoft Academic Search

Different environmental factors can have contrasting effects on the extent of plant local adaptation (LA). Here we evaluate\\u000a the influence of folivory and soil type on LA in Ruellia nudiflora by performing reciprocal transplants at two sites in Yucatan (Mexico) while controlling for soil source and folivory level.\\u000a Soil samples were collected at each site and half of the plants

Ilka Ortegón-Campos; Luis Abdala-Roberts; Víctor Parra-Tabla; J. Carlos Cervera; Denis Marrufo-Zapata; Carlos M. Herrera


Antisecretory Action of the Extract of the Aerial Parts of Eremomastax speciosa (Acanthaceae) Occurs through Antihistaminic and Anticholinergic Pathways.  


Objective. The objective of this study was to find out the possible antiulcer mechanism of action of Eremomastax speciosa. Method. Carbachol- and histamine-induced hypersecretion, associated with the pylorus ligation technique, were used in rats. Gastric mucosal ulceration, mucus production, pH, gastric volume, and acidity were measured. Results. Histamine and carbachol raised gastric acidity to 86.50 and 84.80?mEq/L, respectively, in the control rats, and the extracts (200?mg/kg) reduced gastric acidity to 34.60 and 39.00?mEq/L, respectively. Intraduodenal aqueous extract (400?mg/kg) in histamine- and carbachol-treated rats produced significant (P < 0.001) decreases in acid secretion to 28.50 and 28.80?mEq/L, respectively, and 100 percent inhibition of gastric ulceration. Augmented histamine-induced gastric acid secretion (90.20?mEq/L) was significantly reduced to 52.60 and 27.50?mEq/L by the 200 and 400?mg/kg doses of the aqueous extract, respectively. The extract significantly reduced (P < 0.001) the volume of gastric secretion and significantly increased mucus production. The ulcer inhibition potential of the extract significantly dropped to 25-44% (oral extract) and to 29-37% (duodenal extract) in carbachol/indomethacin-treated rats. Conclusion. The aqueous extract of E. speciosa has both cytoprotective and antisecretory effects. The antisecretory effect may involve a mechanism common to both cholinergic and histaminergic pathways. PMID:24695819

André Perfusion, Amang; Tan, Paul V; Ernestine, Nkwengoua; Barthélemy, Nyasse



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


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



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


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

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.


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


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



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: FRANCIA (MOVILIDAD ALEMANIA (MOVILIDAD PROFESORES) Westfälische Hochschule Del 5 al 8 de Mayo de 2014 Invitación Programa

Rey Juan Carlos, Universidad


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


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


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




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


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



Microsoft Academic Search

Little is known about the spatial structure of weeds and of the corn yield distribution because the analysis of these variables with conventional statistical methods assume that both weed population and corn grain yield are homogeneously distributed within cropped fields. In this research, geostatistical techniques were used to de- scribe and map the distribution of weeds and corn yield in

Mario Domingo Amador-Ramírez; J. Santos Escobedo-Rosales


Efectos de extractos acuosos de la maleza Cyperus rotundus L. (Cyperaceae) sobre la germinación de semillas y crecimiento de plántulas de maíz (Zea mays L.) cv. Pioneer 3031  

Microsoft Academic Search

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

José A. Laynez-Garsaball; Jesús Rafael Méndez-Natera


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


Anti-depressant-like effect of kaempferitrin isolated from Justicia spicigera Schltdl (Acanthaceae) in two behavior models in mice: evidence for the involvement of the serotonergic system.  


We evaluated the antidepressant-like effect of kaempferitrin (Km) isolated from the plant Justicia spicigera (Asteraceae), which is used in traditional medicine for relieving emotional disorders, such as "la tristeza" (sadness or dysthymia) and "el humor" (mood changes). The actions of Km were evaluated in a forced swimming test (FST) and a suspension tail test (TST) in mice. We explored the involvement of the serotonergic system and the hypothalamic-hypophysis-adrenal axis (HPA) in the antidepressant-like effect of Km. To evaluate nonspecific effects of Km on general activity, the open field test (OFT) was performed. Km at 5, 10, and 20 mg/kg induced an antidepressant-like effect. Sub-effective dose of Km (1 mg/kg) produced a synergistic effect with imipramine (6.25 mg/kg) and fluoxetine (10 mg/kg) but not with desipramine (3.12 mg/kg). Pretreatment with p-chlorophenylalanine methyl ester (PCPA), a serotonin synthesis inhibitor, N-{2-(4-(2-methoxyphenyl)-1-piperazinyl}-N-(2-pyridinyl)cyclohexecarboxamide (WAY-100635), a selective 5-HT1A receptor antagonist, and 8OH-DPAT, a selective 5-HT1A agonist, but not pindolol (10 mg/kg) blocked the anti- immobility effect induced by Km. Taken together, these results indicate that the antidepressant-like effect of Km is related to the serotonergic system, principally 5-HT1A. This effect was not related to changes in locomotor activity. PMID:25532842

Cassani, Julia; Dorantes-Barrón, Ana María; Novales, Lilian Mayagoitia; Real, Guadalupe Alva; Estrada-Reyes, Rosa



Environmental control of reproductive phenology and the effect of pollen supplementation on resource allocation in the cleistogamous weed, Ruellia nudiflora (Acanthaceae)  

PubMed Central

•?Background and Aims Mixed reproductive strategies may have evolved as a response of plants to cope with environmental variation. One example of a mixed reproductive strategy is dimorphic cleistogamy, where a single plant produces closed, obligately self-pollinated (CL) flowers and open, potentially outcrossed (CH) flowers. Frequently, optimal environmental conditions favour production of more costly CH structures whilst economical and reliable CL structures are produced under less favourable conditions. In this study we explore (1) the effect of light and water on the reproductive phenology and (2) the effect of pollen supplementation on resource allocation to seeds in the cleistogamous weed Ruellia nudiflora. •?Methods Split-plot field experiments were carried out to assess the effect of shade (two levels: ambient light vs. a reduction of 50 %) and watering (two levels: non-watered vs. watered) on the onset, end and duration of the production of three reproductive structures: CH flowers, CH fruit and CL fruit. We also looked at the effect of these environmental factors on biomass allocation to seeds (seed weight) from obligately self-pollinated flowers (CL), open-pollinated CH flowers and pollen-supplemented CH flowers. •?Key Results CH structures were produced for a briefer period and ended earlier under shaded conditions. These conditions also resulted in an earlier production of CL fruit. Shaded conditions also produced greater biomass allocation to CH seeds receiving extra pollen. •?Conclusions Sub-optimal (shaded) conditions resulted in a briefer production period of CH structures whilst these same conditions resulted in an earlier production of CL structures. However, under sub-optimal conditions, plants also allocated more resources to seeds sired from CH flowers receiving large pollen loads. Earlier production of reproductive structures and relatively larger seed might improve subsequent success of CL and pollen-supplemented CH seeds, respectively. PMID:22095920

Munguía-Rosas, Miguel A.; Parra-Tabla, Victor; Ollerton, Jeff; Cervera, J. Carlos



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


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


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


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,



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


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



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

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.


-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


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


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.


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



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 (, SEISAN (Haskov y Ottemoller, 1999) and Hypocenter (Lienert y Haskov, 1995) to capture, store and locate the earthquakes, respectively; in April 2010, ANTELOPE ( 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.



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


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.


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


Clasificación de los herbicidas  

NSDL National Science Digital Library

Esta lección se enfoca en entender el sistema de clasificación en el cual están organizados los herbicidas. Terminología como clasificación, jerarquía de clasificación, ejemplos de clasificación y un breve resumen de los ocho modos de acción, se discuten en esta lección. Una vez que esto se entiende, es mucho más fácil comprender herbicidas similares y saber por qué estos pueden exhibir ciertos síntomas en malezas y cultivos. Objetivos:Entender la forma en que se clasifican los herbicidas y su importancia en el manejo de la resistencia herbicidaEntender la importancia de la clasificación de los herbicidas por modo de acción, en vez de familiasSer capaz de entender la diferencia entre modo de acción y sitio de acciónSer capaz de diferenciar entre familias de herbicidas, modos de acción, y sitios de acciónEntender nombre común, nombres comerciales y sitios de absorción


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


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



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



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.


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


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


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



Erin A. Tripp, Ph.D. Publications  

E-print Network

in North America. Castanea 75:388-393. Tripp, E.A. 2010. Taxonomic revision of Ruellia sect. The Lichenologist 42: 55-71. Schmidt-Lebuhn, A. and E.A. Tripp. 2009. Ruellia saccata (Acanthaceae), a new species molecular and morphological insights prompt transfer of Blechum to Ruellia (Acanthaceae). Taxon 58: 893

Charles, Donald



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



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



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



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




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


ORIGINAL PAPER Influence of multiple factors on plant local adaptation  

E-print Network

effects in Ruellia nudiflora (Acanthaceae) Ilka Ortego´n-Campos · Luis Abdala-Roberts · Vi´ctor Parra). Here we evaluate the influence of folivory and soil type on LA in Ruellia nudiflora by performing

Herrera, Carlos M.


Your Actions Can Help Protect Our Drinking Water (Spanish)  

E-print Network

A&M. a71 Plaguicidas: Insecticidas, fungicidas, mata malezas, veneno para babosas, polvo para las rosas, bolitas de naftalina, preservantes para madera, polvo para matar pulgas y cucarachas y envases vac?os de pesticidas. a71 Limpiadores: Ceras...

Warren, Judith L.



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

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.


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




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




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



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



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



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


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



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



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


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.


Mecanismo(s) de Acción de los Herbicidas Auxínicos - Parte 2 - Nivel Avanzado  

NSDL National Science Digital Library

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales por los herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso mas ampliamente distribuidas e importantes. Se cree que estos herbicidas actúan como simuladores hormonales. En esta lección se detallará la relación estructural y fisiológica entre los herbicidas auxínicos y la fitohormona natural auxina (ácido indol-3-acético; IAA por sus siglas en inglés) y se explicarán los mecanismos bioquímicos que pueden estar involucrados en su modo de acción. Se revisará el mecanismo de transporte de célula a célula y la absorción de las auxinas por las células, así como también la forma en que estas moléculas causan elongación celular e inducen la síntesis de etileno. De igual forma, se describirán los receptores, las rutas de transferencia de señales y los cambios en expresión genética inducidos por la fitohormona natural IAA y su relación con la actividad de los herbicidas auxínicos.


NEED HELP WITH YOUR APPLICATION? Visit 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 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


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




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



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


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




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


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




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





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


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




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



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


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



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



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



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



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



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



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


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



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



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




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


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



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


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


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;)



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



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.




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



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


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



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



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


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


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



Ethylene production and post-pollination development in Dendrobium flowers treated with foreign pollen  

Microsoft Academic Search

Dendrobium ‘Pompadour’ flowers fade early following pollination. This is associated with increased ethylene production and early epinasty. These effects are also produced by application of 1-aminocyclopropane-1-carboxylic acid (ACC) on the stigma. Pollen (one anther each) from Ruellia tuberosa L. (Acanthaceae) and Caesalpinia pulcherrima (L.) Sw. (Fabaceae) also increased ethylene production and caused early epinasty and fading. Pollen of Hibiscus schizopetalus

S. Ketsa; K. Bunya-Atichart; Doorn van W. G



Environmental control of reproductive phenology and the effect of pollen supplementation on resource allocation in the cleistogamous weed,  

E-print Network

on resource allocation in the cleistogamous weed, Ruellia nudiflora (Acanthaceae) Miguel A. Mungui´a-Rosas1 supplementation on resource allocation to seeds in the cleistogamous weed Ruellia nudiflora. Methods Split, invasive plants, phenology, pollen supplementation, resource allocation, Ruellia nudiflora. INTRODUCTION

Northampton, University of


Molecular evaluation of extracellular activity of medicinal herb Clinacanthus nutans against herpes simplex virus type-2  

Microsoft Academic Search

Clinacanthus nutans (Burm. f.) Lindau (C. nutans), a medicinal herb belonging to the family Acanthaceae, has traditionally been used in herpes simplex virus (HSV) treatment in Thailand. Clinical trials have indicated that topical preparations produced from its extracts were effective in HSV-2 treatment. However, there is no clear evidence of the mechanism of action or a molecular target of C.

Thaveechai Vachirayonstien; Duanthanorm Promkhatkaew; Malee Bunjob; Asawachai Chueyprom; Pranee Chavalittumrong; Pathom Sawanpanyalert



The effect of medicinal plants used in Chinese folk medicine on RANTES secretion by virus-infected human epithelial cells  

Microsoft Academic Search

The accumulation of inflammatory cells in the infective sites has been reported to play a crucial role in the progression of chronic inflammation and multiple sclerosis after viral infection. In the present study, nine ethanol extracts of Forsythia suspensa Vahl. (Oleaceae), Lonicera japonica Thunb. (Caprifoliaceae), Isatis indigotica Fort. (Cruciferae), Strobilanthes cusia (Ness.) O. Kuntze (Acanthaceae), Astragalus membranaceus (Fisch.) Bge. (Leguminosae),

Han-Chieh Ko; Bai-Luh Wei; Wen-Fei Chiou



Hindawi Publishing Corporation Volume 2012, Article ID 423756, 6 pages  

E-print Network

significant structure between populations of J. genoveva from coastal regions of northwestern Mexico, which from Costa Rica that feed on different hosts in the families Acanthaceae and Verbenaceae. The Mexico and the Caribbean. Molecular studies using both mitochondrial and nuclear DNA suggest that two distinct genetic

Markow, Therese


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


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


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.


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.


Vascular Plant Survey of the Canyonlands Unit of the Big Thicket National Preserve, Tyler County, Texas  

E-print Network

with some exceptions: the Quercus, Nyssa, Carya, Acer, Rubus, Sesbania, and Ilex species were combined into groups based on genus due to them residing in similar areas. Ilex opaca was given its own group from the rest of the Ilex species because... jupicai Rich. N P W ACANTHACEAE Magnoliophyta: Magnoliopsida Justicia ovata (Walt.) Lindau. N P W Ruellia caroliniensis (Gmel.) Steud. N P W ACERACEAE Acer rubrum L. N P C Acer saccharum Marsh. N P C ANACARDIACEAE...

Haile, Kelly



[Advances in studies on aryltetralin lactone lignans].  


Natural aryltetralin lactone lignans existed in the plants of family Berberidaceae, Acanthaceae, Burseraceae, Verbenaceae, Euphorbiaceae, etc. Due to the antineoplastic and antiviral properties, it has become a hot research topic in medicinal chemistry. This review covers extraction and isolation, biosynthesis, plant origin, and structure and spectral characteristics of natural aryltetralin lactone lignans. It will provide a useful reference for the intensive studies and rational utilization of aryltetralin lactone lignans. PMID:24079224

Sun, Yan-Jun; Wang, Jun-Min; Chen, Hong; Hua, Hui-Ming



Evaluation of the antioxidant activity of Ruellia tuberosa  

Microsoft Academic Search

The antioxidant activity of Ruellia tuberosa L. (Acanthaceae) was investigated by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging assay and the hydrogen peroxide-induced luminol chemiluminescence assay. The methanolic extract (ME) and its four fractions of water (WtF), ethyl acetate (EaF), chloroform (CfF), and n-hexane (HxF) were prepared and then subjected to antioxidant evaluation. The results of both methods revealed that R. tuberosa

Fu-An Chen; An-Bang Wu; Pochuen Shieh; Daih-Huang Kuo; Chi-Ying Hsieh



Isolation and identification of bioactive compounds in Andrographis paniculata (Chuanxinlian)  

Microsoft Academic Search

Andrographis paniculata (Burm. f.) Nees (Acanthaceae) is a medicinal plant used in many countries. Its major constituents are diterpenoids, flavonoids and polyphenols. Among the single compounds extracted from A. paniculata, andrographolide is the major one in terms of bioactive properties and abundance. Among the andrographolide analogues, 14-deoxy-11,12-didehydroandrographolide is immunostimulatory, anti-infective and anti-atherosclerotic; neoandrographolide is anti-inflammatory, anti-infective and anti-hepatotoxic; 14-deoxyandrographolide is

Wen-Wan Chao; Bi-Fong Lin



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

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.


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.



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

E-print Network

metrópoles latino-americanas ****** Julien Rebotier 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


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



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



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



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:




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




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,




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


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


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


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



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.



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


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



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



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



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



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


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



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




Microsoft Academic Search


Pablo Márquez Escobar


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



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


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


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


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


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



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



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




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




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




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



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



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




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




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



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



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



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


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



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


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



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...


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




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



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


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



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


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


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



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



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




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



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



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




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




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



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


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



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




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



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



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


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



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




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



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


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



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


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


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.



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


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;)



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


In vitro antifilarial effects of three plant species against adult worms of subperiodic Brugia malayi.  


Five aqueous extracts from three plant species, i.e., dried husks (HX), dried seeds (SX) and dried leaves (LX) of Xylocarpus granatum (Meliaceae), dried stems (ST) of Tinospora crispa (Menispermaceae) and dried leaves (LA) of Andrographis paniculata (Acanthaceae) were tested in vitro against adult worms of subperiodic Brugia malayi. The relative movability (RM) value of the adult worms over the 24-h observation period was used as a measure of the antifilarial activity of the aqueous extracts. SX extract of X. granatum demonstrated the strongest activity, followed by the LA extract of A. paniculata, ST extract of T. crispa, HX extract and LX extract of X. granatum. PMID:11585692

Zaridah, M Z; Idid, S Z; Omar, A W; Khozirah, S



A new species of Chalicodoma from Saudi Arabia with modified facial setae (Hymenoptera, Megachilidae)  

PubMed Central

Abstract Some bees and pollen wasps have independently evolved simple, stiff, erect, apically-curved, curly or hooked facial setae as adaptations to collect pollen from nototribic flowers. A distinctive new species of Chalicodoma Lepeletier de Saint Fargeau subgenus Pseudomegachile Friese from Saudi Arabia with such morphological adaptations, Chalicodoma riyadhense sp. n., is described and figured. The species was captured visiting flowers of Blepharis ciliaris (L.) (Acanthaceae). The occurrence of modified facial setae is documented and discussed for the first time in eight other species of Pseudomegachile, and a key to the genera and subgenera of Megachilini currently confirmed for Saudi Arabia is provided. PMID:22787421

Alqarni, Abdulaziz S.; Hannan, Mohammed A.; Gonzalez, Victor H.; Engel, Michael S.



Hygrophila spinosa: A comprehensive review  

PubMed Central

Hygrophila spinosa T Ander, belonging to the family Acanthaceae, is a promising medicinal plant with great economic potential. The medicinal value of H. spinosa has been appreciated in the ancient medical literature. The plant contains terpenoids, alkaloids, flavonoids, and is traditionally known as an aphrodisiac, renal tonic, and for its health-promoting properties. The plant is cultivated throughout India. However, systematic information on the different aspects of this species is not available. In this review, an attempt has been made to present this information. PMID:22228957

Kshirsagar, A. D.; Ingale, K. G.; Vyawahare, N. S.; Thorve, V. S.



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

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.


Studies on effects of indigenous plant extracts on filarial vector Culex tritaeniorhynchus Giles.  


Mosquito control is facing a threat because of the emergence of resistance to synthetic insecticides. Insecticides of botanical origin may serve as suitable alternative biocontrol techniques in the future. The purpose of the present study was to assess the effect of leaf ethyl acetate, acetone and methanol extracts of Aegle marmelos (L.) Correa ex Roxb (Rutaceae), Andrographis lineata Wallich ex Nees. (Acanthaceae), Andrographis paniculata (Burm.f.) Wall. ex Nees. (Acanthaceae), Cocculus hirsutus (L.) Diels (Menispermaceae), Eclipta prostrata L. (Asteraceae) and Tagetes erecta L. (Compositae) on ovicidal and oviposition-deterrent activities against Culex tritaeniorhynchus Giles (Diptera: Culicidae). The percentage of egg hatching in methanol extracts of Andrographis lineata, Cocculus hirsutus and T. erecta were 16, 12 and 16 exerted at 500 ppm, respectively. The percentage of effective oviposition repellency was 97.77 at 500 ppm and the lowest repellency was 42.06 at 31.25 ppm in methanol and acetone extracts of Andrographis lineata and Andrographis paniculata, respectively. The oviposition activity index values revealed that the solvent plant extracts have deterrent effect, and they caused a remarkable negative response resulting in oviposition of very few eggs. These results suggest that the leaf solvent plant extracts have the potential to be used as an ideal ecofriendly approach for the control of the Culex tritaeniorhynchus. PMID:20372924

Elango, G; Rahuman, A Abdul; Kamaraj, C; Zahir, A Abduz; Bagavan, A



Effect of Hygrophila spinosa in ethylene glycol induced nephrolithiasis in rats  

PubMed Central

Objective: Hygrophila spinosa (Acanthaceae) is traditionally used to treat urinary calculi. The present study aimed to evaluate the antiurolithiatic activity of methanolic extract of Hygrophila spinosa (Acanthaceae) in ethylene glycol induced nephrolithiasic rats. Materials and Methods: Methanolic extract of Hygrophila spinosa (HSME) (250 and 500 mg/ kg body weight) was administered orally to male Wistar albino rats. Ethylene glycol (EG) was used to induce nephrolithiasis. The parameters studied included water intake, urinary volume, urinary pH, urinary and kidney oxalate and calcium, urinary magnesium and serum uric acid. Results: Ethylene glycol feeding resulted in hyperoxaluria as well as increased renal excretion of calcium and serum uric acid along with decreased excretion of urinary magnesium. Treatment with HSME significantly reduced the elevated urinary oxalate, urinary calcium and serum uric acid with increase in reduced urinary magnesium. Ethylene glycol feeding also resulted in increased levels of calcium and oxalate in kidney which was decreased after the treatment with HSME. The increased deposition of stone forming constituents in the kidneys of ethylene glycol treated rats was significantly lowered by treatment with HSME. Conclusion: The results indicate that the aerial parts of Hygrophila spinosa are endowed with antiurolithiatic activity, thereby justifying its traditional claim. PMID:23112429

Ingale, Kundan G.; Thakurdesai, Prasad A.; Vyawahare, Neeraj S.



The effect of medicinal plants used in Chinese folk medicine on RANTES secretion by virus-infected human epithelial cells.  


The accumulation of inflammatory cells in the infective sites has been reported to play a crucial role in the progression of chronic inflammation and multiple sclerosis after viral infection. In the present study, nine ethanol extracts of Forsythia suspensa Vahl. (Oleaceae), Lonicera japonica Thunb. (Caprifoliaceae), Isatis indigotica Fort. (Cruciferae), Strobilanthes cusia (Ness.) O. Kuntze (Acanthaceae), Astragalus membranaceus (Fisch.) Bge. (Leguminosae), Hedysarum polybotrys Hand.-Mazz. (Leguminosae), Andrographis paniculata (Burm. f.) Ness. (Acanthaceae), Glycyrrhiza uralensis Fischer. (Leguminosae) and Ligusticum wallichii Franch. (Umbelliferae), medicinal plants traditionally used in China for treating conditions likely to be associated with inflammation and viral infection, were screened for their effect on RANTES secretion by influenza A virus (H1N1)-infected human bronchial epithelial cells (A549). With exception of Lonicera japonica, Isatis indigotica, Astragalus membranaceus and Hedysarum polybotrys, all plants tested at concentration of 200 microg/ml possessed more than 50% suppressing effect on RANTES secretion by H1N1-infected A549 bronchial epithelial cells. Among the plants tested, Andrographis paniculata showed the most promising property to inhibit RANTES secretion with an IC(50) of 1.2 +/- 0.4 microg/ml while the next two were Glycyrrhiza uralensis and Forsythia suspensa (IC(50) ranging from 35 to 48 microg/ml). PMID:16621378

Ko, Han-Chieh; Wei, Bai-Luh; Chiou, Wen-Fei



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.



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




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




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.




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




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



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



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



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


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

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.



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




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



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



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



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



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



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


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


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



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



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.


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.


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



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


¿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



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




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


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



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



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



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


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


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


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


Light-dependent segregation of begomoviruses in Asystasia gangetica leaves.  


Asystasia gangetica (Acanthaceae) from tropical Africa and Asia is used as source of food and for medical applications. Plants collected in West Africa in the 1980s with typical geminivirus symptoms showed an unusual symptom segregation that included vein yellowing, curling and mosaic, which were present simultaneously or separately on different leaves of the same plant or on different plants propagated as cuttings from a single plant. Rolling-circle amplification in combination with restriction fragment length polymorphism analysis followed by deep sequencing of the RCA products identified two geminiviruses in these plants. One with a bipartite genome, Asystasia begomovirus 1, and the other with a monopartite genome together with its defective DNA, Asystasia begomovirus 2. The relationship between leaf symptoms and virus distribution under different light regimes was investigated, and showed for the first time an unusual segregation of symptoms and viruses, either within a single plant, or even within a leaf. PMID:25449572

Wyant, Patricia; Strohmeier, Stephan; Fischer, Alexander; Schäfer, Benjamin; Briddon, Rob W; Krenz, Björn; Jeske, Holger



FIB-SEM: an additional technique for investigating internal structure of pollen walls.  


Pollen grain morphology has been widely used in the classification of the Acanthaceae, where external pollen wall features have proved useful in determining relationships between taxa. Although detailed information has been accumulated using light microscopy, transmission electron microscopy and scanning electron microscopy (SEM) techniques, internal pollen wall features lack investigation and the techniques are cumbersome. A new technique involving precise cross sectioning or slicing of pollen grains at a selected position for examining wall ultrastructure, using a focused ion beam-scanning electron microscope (FIB-SEM), has been explored and promising results have been obtained. The FIB-SEM offers a good technique for reliable, high resolution, three-dimensional (3D) viewing of the internal structure of the pollen grain wall. PMID:23981267

House, Alisoun; Balkwill, Kevin



The Families of Flowering Plants  

NSDL National Science Digital Library

Australian authors L. Watson and M. J. Dallwitz have updated this magnificent resource of detailed character descriptions, taxonomic information, references, and line illustrations of "all the Angiosperm families" from Acanthaceae to Zygophyllaceae. Users will find extensive data on plant and flower morphology, "seedling germination type, embryology, anther ontogeny, pollen cytology and morphology, stigma type, sieve-tube plastids, leaf, stem, nodal and wood anatomy, and phytochemistry (phenolics, alkaloids, cyanogenesis, etc.)." Watson and Dallwitz also include detailed taxonomic information on family synonyms, "numbers of species and genera in each family, and complete lists or (in the case of the largest families only) examples of the genera in each." A character list and an 'implicit attributes' section accompany the resource; information for downloading is available at the site. For teachers and graduate students alike, this online resource will be hard to beat.


Experimental and Clinical Pharmacology of Andrographis paniculata and Its Major Bioactive Phytoconstituent Andrographolide.  


Andrographis paniculata (Burm. F) Nees, generally known as "king of bitters," is an herbaceous plant in the family Acanthaceae. In China, India, Thailand, and Malaysia, this plant has been widely used for treating sore throat, flu, and upper respiratory tract infections. Andrographolide, a major bioactive chemical constituent of the plant, has shown anticancer potential in various investigations. Andrographolide and its derivatives have anti-inflammatory effects in experimental models asthma, stroke, and arthritis. In recent years, pharmaceutical chemists have synthesized numerous andrographolide derivatives, which exhibit essential pharmacological activities such as those that are anti-inflammatory, antibacterial, antitumor, antidiabetic, anti-HIV, antifeedant, and antiviral. However, what is noteworthy about this paper is summarizing the effects of andrographolide against cardiovascular disease, platelet activation, infertility, and NF- ? B activation. Therefore, this paper is intended to provide evidence reported in relevant literature on qualitative research to assist scientists in isolating and characterizing bioactive compounds. PMID:23634174

Jayakumar, Thanasekaran; Hsieh, Cheng-Ying; Lee, Jie-Jen; Sheu, Joen-Rong



Leaf chemistry and foliage avoidance by the thrips Frankliniella occidentalis and Heliothrips haemorrhoidalis in glasshouse collections.  


Observational studies on foliage avoidance by the polyphagous thrips species Frankliniella occidentalis (Pergande) and Heliothrips haemorrhoidalis (Bouché) (Thysanoptera: Thripidae) identified six non-host species (Allagopappus dichotomus (Asteraceae), Gardenia posoquerioides (Rubiaceae), Plectranthus aff. barbatus, Plectranthus strigosus, Plectranthus zuluensis (Lamiaceae), and Sclerochiton harveyanus (Acanthaceae) among plants growing within a major glasshouse botanical collection. The effects of sequentially obtained acetone and aqueous methanol leaf extracts on mortality in first instar Frankliniella occidentalis were assessed. The acetone leaf extract of Sclerochiton harveyanus, which had the highest activity against the thrips, yielded four new iridoids, sclerochitonosides A-C, and sclerochitonoside B 4'-methyl ether. Mortality of F. occidentalis was increased on exposure to all four iridoids, and the most active iridoid was sclerochitonoside A (8-epiloganic acid 4'-hydroxyphenylethyl ester). Choice experiments demonstrated that this compound did not significantly deter H. haemorrhoidalis from treated leaf surfaces. The significance of iridoids in the defense mechanism of plants against thrips is discussed. PMID:21331569

Brown, Alison S Scott; Veitch, Nigel C; Simmonds, Monique S J



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


El análisis de un estudio clínico indica que una combinación de fármacos puede ser de gran eficacia contra el cáncer de ovario recidivante

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).


Informe Anual a la Nación sobre el Estado del Cáncer 1975-2002 con una sección especial sobre las tendencias de tratamiento: preguntas y respuestas

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.


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.



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


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.


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.


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



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



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


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



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


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



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




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


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




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




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


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



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


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


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


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



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


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.


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



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


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



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



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.


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



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




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



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


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



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


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


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



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.


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.


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


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


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



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


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


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



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


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.


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.



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




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



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


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




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




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


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




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


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


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


Vistazos Intimos De Puebla; Una Compilacion De Informes Individuales Preparados Por Los Participantes Del Instituto De Verano (NDEA) (Close-ups on Puebla; A Compilation of Individual Reports Prepared by the Participants of the NDEA Summer Institute).  

ERIC Educational Resources Information Center

The individual and committee reports on the sociology of Puebla, Mexico, which are collected here, were written by participants in an NDEA Summer Institute program of the University of Wichita, Kansas. The underlying motives of the program, described in the preface, were to provide participants with real language experience and a chance to…

Wichita State Univ., KS.


Gomez Villegas, M. A. (2014). 2013, A~no internacional de la estadistica: una panoramica. Historia de la Probabilidad y la Estadistica [VII] (J. Santos y S. de Paz, eds.), Madrid: Delta, 1129.  

E-print Network

Galileo Galilei (1564-1642), por ser m´as conocido, solo diremos que nace el mismo a~no que Shakespeare y- tribuciones de Galileo en este campo, revisar las contribuciones de los primeros probabilistas, considerar las que da Galileo es que los valores no son equiprobables ya que el 631 se puede obtener de 6 maneras

Gómez Villegas, Miguel Ángel


Puerto Rican Psychology: A Review of Issues Pertaining to Assessment and Counseling = La Psicologia Puertorriquena: Una Revision de la Problematica Relacionada con la Medicion y la Consejeria. Monograph #135.  

ERIC Educational Resources Information Center

This is a collection of papers related to psychological assessment and counseling in Puerto Rico. Included are: (1) an introduction (in Spanish), by Joseph O. Prewitt-Diaz; (2) "A Procedure for Constructing Valid Cross-Cultural Attitude Measures for Use in Puerto Rico," by Cecil R. Trueblood; (3) "Perfil de Personalidad en el Adolescente…

Prewitt-Diaz, Joseph O., Ed.


16) Il lattaio ogni giorno deve consegnare il latte agli inquilini di tutti palazzi di una via. I palazzi della via sono numerati con i numeri civici da 1 a 20,  

E-print Network

'inizio della strada? A) 272 m B) 284 m C) 308 m D) 312 m E) 320 m 17) L'ombra del bastone, lungo 210 cm, misura 90 cm e nello stesso momento l'ombra dell'- albero misura 2,4 m. Qual è l'altezza dell'al- bero? A) 5

Spagnolo, Filippo


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))



«Amigos con derecho a roce»: una oportunidad para contraer la infección por el virus de la inmunodeficiencia humana en hombres homo\\/bixesuales con prácticas sexuales de alto riesgo  

Microsoft Academic Search

ObjectiveDespite prevention efforts, the prevalence of unprotected anal intercourse (UAI) remains substantial among men who have sex with men (MSM). This study describes and analyzes how a group of MSM manages sexual risk with sexual partners.

Percy Fernández-Dávila



La Implementacion de la Tecnologia en el Salon de Clases: Una guia para los que toman decisiones en las escuelas rurales (Putting Technology into the Classroom: A Guide for Rural Decision Makers).  

ERIC Educational Resources Information Center

This guide is intended for superintendents and central office staff in small, rural school districts who are considering ways of using technology in the classroom. It provides information about why technology is worth the trouble and what it can accomplish, lays out the basic issues and tasks involved in integrating technology into classroom…

Boethel, Martha; Dimock, K. Victoria; Hatch, Lin; Adams, Sharon, Ed.; Heath, Marilyn, Ed.


Definizione di una tipologia testuale integrabile in un curricolo didattico di italiano per stranieri (Defining a Textual Classification To Be Used in a Course on Teaching Italian as a Foreign Language).  

ERIC Educational Resources Information Center

Analyzes the different types of texts that can be used in the teaching of Italian as a foreign language. Based on their communicative function, the texts are divided into the following categories: description, narration, instruction, argumentation, and exposition. Grids with examples of each type of text are included. (CFM)

Diadori, Pierangela



Impacto de una intervención alimentaria con un concentrado proteico de Medicago sativa L (alfalfa), en niños pre escolares con desnutrición crónica Nourishing intervention impact with Medicago sativa L (alfalfa) protein extract in chronically undernourished preschool children  

Microsoft Academic Search

Introduction: Studies made at preclinical level have demonstrated the Medicago sativa L, alfalfa (CPA)'s concentrated protein biological value; as such this product could be an alternative to reduce undernourishment. Objective: To determine CPA consuming effects in kindergarten children with chronic undernourishment by biochemical and hematologic indicators. Design: Intervention analytical, longitudinal and prospective study. Setting: Biochemistry and Nutrition Research Center, Faculty

María Soberón; Rosa Oriondo; Enriqueta Estrada; Inés Arnao; Adriana Cordero; Luz Velásquez; Irene Arteaga




Microsoft Academic Search

The work contains the results of a qualitative research on the total of laws with integral nature enacted over the last years in Spain against the gender violence, a research carried out in accordance with the analysisoutline of Law proposed by Carol Smart that involves to walk along three phases: \\

Juana María González Moreno


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

economía agrícola (Department of Agricultural Economics), 51 Campus Drive, University of Saskatchewan-Cabán, Hesseln Introducción El número creciente de incendios en zonas silvestres cada verano ha dado lugar

Standiford, Richard B.


Hoffmann O., 2004 : "Espacios y regin en el pacfico sur : Hacia la construccin de una sociedad rgional ? pp195-221 in BARBARY O. y URREA F., Gente negra en Colombia: Dinmicas sociopolticas en Cali y el  

E-print Network

Chocó Nariño Tumaco Valle y Cauca halshs-00463393,version1-12Mar2010 Author manuscript, published región de Tumaco (cf. figura 2). halshs-00463393,version1-12Mar2010 #12;3 Quibdó Buenaventura Tumaco Cali en las divisiones político administrativas. CHOCO PACIFICO SUR Tumaco Buenaventura VALLE DEL CAUCA

Paris-Sud XI, Université de


Pagina 1 di 2 Una versione elettronica aggiornata di questo documento disponibile sul portale di Ateneo nella sezione dedicata a tutti i servizi on line (, link  

E-print Network

servizio Wi-fi di UNITO progettato per garantire il massimo livello di protezione, in termini di MYUNITO Le credenziali (username e password) per accedere al Portale ed ai servizi on line sono quelle che, fase propedeutica per l'immatricolazione Password: quella scelta in fase di registrazione al Portale (a

Sproston, Jeremy


Un Nuevo Convenio para el Aprendizaje: Una Sociedad para Mejorar los Resultados Educativos en el Estado de Nueva York (A New Compact for Learning: A Partnership To Improve Educational Results in New York State).  

ERIC Educational Resources Information Center

This Spanish translation of the abridged version of "A New Compact for Learning" acknowledges the current U.S. education system's inadequacy to educate U.S. citizenry and introduces New York State's New Compact for Learning, intended as a plan to reorganize New York's own system. The compact's fundamental principles are: (1) recognizing that all…

New York State Education Dept., Albany. Office of Elementary, Middle and Secondary Education.


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

ERIC Educational Resources Information Center

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

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


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

ERIC Educational Resources Information Center

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

Taher, Bonnie; Durr, Pamela


Como Ayudarle a su Hijo con la Tarea Escolar: Una guia para padres de alumnos de escuela primaria y secundaria (Helping Your Child with Homework: For Parents of Elementary and Junior High School-Aged Children).  

ERIC Educational Resources Information Center

This Spanish-language booklet is designed to provide parents of elementary and junior high school students with an understanding of the purpose and nature of homework along with suggestions for helping their children complete homework assignments successfully. Following a discussion of why teachers assign homework, how homework can help children…

Paulu, Nancy, Ed.; Perkinson, Kathryn, Ed.


In vitro anti-oxidant and anti-cancer activity of methanolic extract from Sanchezia speciosa leaves.  


Sanchezia speciosa, is a bushy shrub from Acanthaceae family which commonly grows in tropical areas of South and Central America. In this study, we employed MTT assay to test the cytotoxicity of that methanolic fraction of S. speciosa leaves on MCF-7 human breast cancer, SK-MEL-5 human malignant melanoma and human umbilical vein endothelial cells, HUVEC cells. The extract showed highest activity on MCF-7 and moderate cytotoxicity towards SK-MEL-5. In contrast, the extract demonstrated lowest cell growth inhibition activity on HUVEC cells, indicating better selectivity compare to standard drug, doxorubicin. In addition, we also performed ORAC assay to determine the radical scavenging capacity of methanolic extract of S. speciosa leaves. The extract exhibited nearly similar anti-oxidant activity as quercetin, suggesting S. speciosa leaves as a potential source of natural anti-oxidant. To the best of our knowledge, this is the first report on anti-oxidant and cytotoxic activity of S. speciosa. PMID:24506026

Paydar, Mohammadjavad; Wong, Yi Li; Moharam, Bushra Abdulkarim; Wong, Won Fen; Looi, Chung Yeng



Extraction of three bioactive diterpenoids from Andrographis paniculata: effect of the extraction techniques on extract composition and quantification of three andrographolides using high-performance liquid chromatography.  


Andrographis paniculata (Burm.f.) wall.ex Nees (Acanthaceae) or Kalmegh is an important medicinal plant finding uses in many Ayurvedic formulations. Diterpenoid compounds andrographolides (APs) are the main bioactive phytochemicals present in leaves and herbage of A. paniculata. The efficiency of supercritical fluid extraction (SFE) using carbon dioxide was compared with the solid-liquid extraction techniques such as solvent extraction, ultrasound-assisted solvent extraction and microwave-assisted solvent extraction with methanol, water and methanol-water as solvents. Also a rapid and validated reverse-phase high-performance liquid chromatography-diode array detection method was developed for the simultaneous determination of the three biologically active compounds, AP, neoandrographolide and andrograpanin, in the extracts of A. paniculata. Under the best SFE conditions tested for diterpenoids, which involved extraction at 60°C and 100 bar, the extractive efficiencies were 132 and 22 µg/g for AP and neoandrographolide, respectively. The modifier percentage significantly affected the extraction efficiency. PMID:24170124

Kumar, Satyanshu; Dhanani, Tushar; Shah, Sonal



Modulation of Cox-1, 5-, 12- and 15-Lox by Popular Herbal Remedies Used in Southern Italy Against Psoriasis and Other Skin Diseases.  


Acanthus mollis (Acanthaceae), Achillea ligustica, Artemisia arborescens and Inula viscosa (Asteraceae) are used in Southern Italy against psoriasis and other skin diseases that occur with an imbalanced production of eicosanoids. We here assessed their in vitro effects upon 5-, 12-, 15-LOX and COX-1 enzymes as well as NF?B activation in intact cells as their possible therapeutic targets. All methanol crude extracts inhibited both 5-LOX and COX-1 activities under 200?µg/mL, without significant effects on the 12-LOX pathway or any relevant in vitro free radical scavenging activity. NF?B activation was prevented by all extracts but A. mollis. Interestingly, A. ligustica, A. arborescens and A. mollis increased the biosynthesis of 15(S)-HETE, an anti-inflammatory eicosanoid. A. ligustica (IC50 ?=?49.5?µg/mL) was superior to Silybum marianum (IC50 ?=?147.8?µg/mL), which we used as antipsoriatic herbal medicine of reference. Its n-hexane, dichloromethane and ethyl acetate fractions had also inhibitory effects on the LTB4 biosynthesis (IC50 s?=?9.6, 20.3 and 68?µg/mL, respectively) evidencing that the apolar extracts of A. ligustica are promising active herbal ingredients for future phytotherapeutical products targeting psoriasis. © 2014 The Authors. Phytotherapy Research published by John Wiley & Sons Ltd. PMID:25278440

Bader, Ammar; Martini, Francesca; Schinella, Guillermo R; Rios, Jose L; Prieto, Jose M



Anti-inflammatory and antimicrobial properties of pyrroloquinazoline alkaloids from Adhatoda vasica Nees.  


Adhatoda vasica Nees, Acanthaceae, is well known plant in Ayurveda and Unani medicine. The purpose of this study was to characterize the most bioactive phytochemicals viz., vasicine, vasicinone, vasicine acetate, 2-acetyl benzyl amine, vasicinolone present in the chloroform fraction having anti-inflammatory and antimicrobial activities. The anti-inflammatory activity was tested by using carrageenan and CFA-model induced paw oedema. The antimicrobial activity of isolated compounds was assessed by using the microdilution method. The observed results revealed that vasicine showed most potent anti-inflammatory effects (59.51%) at the dose of 20.0mg/kg at 6h after carrageenan injection and maximum inhibition rate was observed of vasicinone (63.94%) at the dose of 10.0mg/kg at 4 days after CFA injection. The strong antibacterial activity was exhibited by vasicine at 20?g/ml dose against E. coli and also demonstrated maximum antifungal activity against C. albicans at the dose of >55?g/ml. All the five alkaloids demonstrated significant anti-inflammatory and antimicrobial activities. PMID:23357363

Singh, Bharat; Sharma, Ram Avtar



[Annotated list of the plants of the Tortuguero National Park].  


The floodplains of Tortuguero, in northeastern Costa Rica, stand as one of the richest plant-species regions in Central America. In this paper, we present the annotated check-list of vascular plants that are present within the rainforest of Tortuguero National Park (TNP), a 26 604h land that protects most of the biological diversity of these plains. Our list resulted from collections made in 2012, as well as the examination of material mantained at the Herbarium of the National Biodiversity Institute of Costa Rica, INBio (ATTA Database) and in the TROPICOS database. A total of 732 vascular plant species included in 413 genera are known to the Park. Two of these species have limited distributions and are endemic to Costa Rica: Pseuderanthemum pittieri (Acanthaceae) and Paullinia austin-smithii (Sapindaceae). Ninety species have known ethnobotanical uses. The high diversity in plant species reported here for the forest environments of Tortuguero contrasts with the low species diversity previously reported in the palm-swamps that characterize the riverine habitats within the Park. PMID:24459756

Hurtado-Hernández, Priscilla M; González-Ramírez, José A



Making iridoids/secoiridoids and monoterpenoid indole alkaloids: progress on pathway elucidation.  


Members of the Acanthaceae, Apocynaceae, Bignoniaceae, Caprifoliaceae, Gentianaceae, Labiatae, Lamiaceae, Loasaceae, Loganiaceae, Oleaceae, Plantaginaceae, Rubiaceae, Saxifragaceae, Scrophulariaceae, Valerianaceae, and Verbenaceae plant families are well known to accumulate thousands of bioactive iridoids/secoiridoids while the Apocynaceae, Loganiaceae and Rubiaceae families also accumulate thousands of bioactive monoterpenoid indole alkaloids (MIAs), mostly derived from the secologanin and tryptamine precursors. Several large-scale RNA-sequencing projects have greatly advanced the tools available for identifying candidate genes whose gene products are involved in the biosynthesis of iridoids/MIAs. This has led to the rapid comparative bioinformatics guided elucidation of several key remaining steps in secologanin biosynthesis as well as other steps in MIA biosynthesis. The availability of these tools will permit broad scale biochemical and molecular description of the reactions required for making thousands of iridoid/MIAs. This information will advance our understanding of the evolutionary and ecological roles played by these metabolites in Nature and the genes will be used for biotechnological production of useful iridoids/MIAs. PMID:24709280

De Luca, Vincenzo; Salim, Vonny; Thamm, Antje; Masada, Sayaka Atsumi; Yu, Fang



Hypolipidemic effects of andrographolide and neoandrographolide in mice and rats.  


Andrographolide (AND) and neoandrographolide (NEO) are the diterpenoids from the Andrographis paniculata (Acanthaceae). It is reported the diterpenoids exhibit a wide spectrum of biological activities. The aim of this study was to investigate the hypolipidemic effect of AND and NEO in hyperlipidemic mice induced by 75% yolk emulsion and in hyperlipidemic rats induced by high fat emulsion, respectively. The results showed that the levels of triglyceride, total cholesterol (TC) and low-density lipoprotein cholesterol were reduced by AND and NEO in a dose-dependent tendency in mice. Compared with the model group, the plasma TC levels of experimental groups with AND and NEO at 100?mg/kg dosage decreased by 23.9 and 20.2% in rats, respectively (P?

Yang, Tao; Shi, Hai-xia; Wang, Zheng-tao; Wang, Chang-hong



Effects of rhinacanthin-C on function and expression of drug efflux transporters in Caco-2 cells.  


Rhinacanthin-C is a bioactive naphthoquinone ester found in Rhinacanthus nasutus Kurz (Acanthaceae). This compound has potential therapeutic value as an anticancer and antiviral agent. The purposes of this study were to determine the effects of this compound on the function and the expression of P-glycoprotein (P-gp) and multidrug resistance-associated protein 2 (MRP2), using the in vitro model of Caco-2 cells. The activities of P-gp and MRP2 were determined by following the intracellular accumulation of calcein and 5(6)-carboxy-2',7'-dichlorofluorescein in the uptake assays with fluorescence spectroscopy. The expression of P-gp after prolonged exposure was evaluated by flow cytometry with the use of a fluorescein isothiocyanate-conjugated anti-human P-gp antibody. Our results showed that the inhibitory effect of rhinacanthin-C was more potent toward P-gp than MRP2, and was reversible. Short-term exposure of Caco-2 cells with rhinacanthin-C (100 ?M) resulted in increase in P-gp expression without any significant change in its function. Extended exposure of Caco-2 cells to the naphthoquinone at the highest non-cytotoxic concentration (0.625 ?M) for 7 days had no effect on the expression and the function of P-gp. These findings suggested that rhinacanthin-C might raise the problem of herb-drug interaction when co-administered with other P-gp substrates. PMID:23742857

Wongwanakul, Ratjika; Vardhanabhuti, Nontima; Siripong, Pongpun; Jianmongkol, Suree



Isolation, characterisation and biological evaluation of a phenoxazine, a natural dyestuff isolated from leaves of Peristrophe bivalvis.  


Peristrophe bivalvis (L.) Merr. (Acanthaceae) is a wild growing and cultivated plant used for dyeing of foods by the ethnic minorities of Vietnam. The major component of the colour aqueous extract (CAE) of its leaves was identified as peristrophine by spectral analysis, especially the 2D NMR spectra (HSQC, HMBC and NOESY). Considering the widespread utilisation of the decoction of this plant for food dyeing, we evaluated the acute oral toxicity of the CAE. Based on the results in an acute toxicity study in mice, the LD50 value of the CAE was determined as 9100?±?290?mg?kg(-1) body weight. Additionally, in vitro cytotoxic assay showed an inhibition of peristrophine against Hepatocellular carcinoma (HepG2, IC503.90?µg?mL(-1)). CAE and peristrophine (1) have also been tested for their ability to affect the cell number of the OCI acute myeloid leukaemia cell line. CAE and peristrophine significantly decreased the OCI cell number at different concentrations and times of treatment. PMID:22712581

Thuy, Trinh Thi; Huong, Nguyen Thi Thanh; Nhung, Le Thi Hong; Ninh, Pham Thi; Delfino, Domenico V; Van Sung, Tran



Analysis of Flavone C-Glycosides in the Leaves of Clinacanthus nutans (Burm. f.) Lindau by HPTLC and HPLC-UV/DAD.  


Clinacanthus nutans (family Acanthaceae) has been used for the treatment of inflammation and herpes viral infection. Currently, there has not been any report on the qualitative and quantitative determination of the chemical markers in the leaves of C. nutans. The C-glycosidic flavones such as shaftoside, isoorientin, orientin, isovitexin, and vitexin have been found to be major flavonoids in the leaves of this plant. Therefore, we had developed a two-step method using thin-layer chromatography (TLC) and high pressure liquid chromatography (HPLC) for the rapid identification and quantification of the flavones C-glycosides in C. nutans leaves. The TLC separation of the chemical markers was achieved on silica gel 60 plate using ethyl acetate?:?formic acid?:?acetic acid?:?water (100?:?11?:?11?:?27?v/v/v/v) as the mobile phase. HPLC method was optimized and validated for the quantification of shaftoside, orientin, isovitexin, and vitexin and was shown to be linear in concentration range tested (0.4-200??g/mL, r (2) ? 0.996), precise (RSD ? 4.54%), and accurate (95-105%). The concentration of shaftoside, orientin, vitexin, and isovitexin in C. nutans leave samples was 2.55-17.43, 0.00-0.86, 0.00-2.01, and 0.00-0.91?mmol/g, respectively. PMID:25405231

Chelyn, June Lee; Omar, Maizatul Hasyima; Mohd Yousof, Nor Syaidatul Akmal; Ranggasamy, Ramesh; Wasiman, Mohd Isa; Ismail, Zakiah



Modulation of Cox-1, 5-, 12- and 15-Lox by Popular Herbal Remedies Used in Southern Italy Against Psoriasis and Other Skin Diseases  

PubMed Central

Acanthus mollis (Acanthaceae), Achillea ligustica, Artemisia arborescens and Inula viscosa (Asteraceae) are used in Southern Italy against psoriasis and other skin diseases that occur with an imbalanced production of eicosanoids. We here assessed their in vitro effects upon 5-, 12-, 15-LOX and COX-1 enzymes as well as NF?B activation in intact cells as their possible therapeutic targets. All methanol crude extracts inhibited both 5-LOX and COX-1 activities under 200?µg/mL, without significant effects on the 12-LOX pathway or any relevant in vitro free radical scavenging activity. NF?B activation was prevented by all extracts but A. mollis. Interestingly, A. ligustica, A. arborescens and A. mollis increased the biosynthesis of 15(S)-HETE, an anti-inflammatory eicosanoid. A. ligustica (IC50?=?49.5?µg/mL) was superior to Silybum marianum (IC50?=?147.8?µg/mL), which we used as antipsoriatic herbal medicine of reference. Its n-hexane, dichloromethane and ethyl acetate fractions had also inhibitory effects on the LTB4 biosynthesis (IC50s?=?9.6, 20.3 and 68?µg/mL, respectively) evidencing that the apolar extracts of A. ligustica are promising active herbal ingredients for future phytotherapeutical products targeting psoriasis. © 2014 The Authors. Phytotherapy Research published by John Wiley & Sons Ltd. PMID:25278440

Bader, Ammar; Martini, Francesca; Schinella, Guillermo R; Rios, Jose L; Prieto, Jose M



Nain-e Havandi Andrographis paniculata present yesterday, absent today: a plenary review on underutilized herb of Iran's pharmaceutical plants.  


Nain-e Havandi (Andrographis paniculata Nees.) (AP) is an annual herbaceous plant belonging to the family Acanthacea. Only a few species of Andrographis genus out of 28 are medicinally concerned of which AP is the most important. Knowledge about the arrival of AP to Iran is extremely lacking but most probably it has been imported from India. However, evidence implies the familiarity of Iran's folkloric medicine with this plant, but it has been disappeared from contemporary medicine for unknown reasons. Presence of active ingredients from diterpenoids group such as andrographolide, neoandrographolide and 14-deoxy-11,12-didehydroandrographolide has given incredible unique medicinal properties to the plant. Traditionally, Nain-e Havandi has been used in the role of a non-farm plant as a remedy for skin problems, flu, respiratory disease, and snakebite in East and Southeast Asia for centuries. Recently, it has been utilized as a treatment for HIV, hepatitis, diabetes, cancer and kidney disorders. Intensive cultivation of the herb started only in the past decade in countries such as China, India, Thailand, Indonesia, West Indies, Mauritius and to some extent, in Malaysia. Availability of different ecological zones in Iran complies with reestablishment of AP in tropical and temperate regions of the country. This is killing two birds with one stone, supporting the conservational and economic aspects. PMID:22198549

Valdiani, Alireza; Kadir, Mihdzar Abdul; Tan, Soon Guan; Talei, Daryush; Abdullah, Mohd Puad; Nikzad, Sonia



Harnessing the medicinal properties of Andrographis paniculata for diseases and beyond: a review of its phytochemistry and pharmacology  

PubMed Central

Andrographis paniculata Wall (family Acanthaceae) is one of the most popular medicinal plants used traditionally for the treatment of array of diseases such as cancer, diabetes, high blood pressure, ulcer, leprosy, bronchitis, skin diseases, flatulence, colic, influenza, dysentery, dyspepsia and malaria for centuries in Asia, America and Africa continents. It possesses several photochemical constituents with unique and interesting biological properties. This review describes the past and present state of research on Andrographis paniculata with respect to the medicinal usage, phytochemistry, pharmacological activities, toxicity profile and therapeutic usage, in order to bridge the gap requiring future research opportunities. This review is based on literature study on scientific journals and books from library and electronic sources. Diterpenes, flavonoids, xanthones, noriridoides and other miscellaneous compounds have been isolated from the plant. Extract and pure compounds of the plant have been reported for their anti-microbial, cytotoxicity, anti-protozoan, anti-inflammatory, anti-oxidant, immunostimulant, anti-diabetic, anti-infective, anti-angiogenic, hepato-renal protective, sex hormone/sexual function modulation, liver enzymes modulation insecticidal and toxicity activities. The results of numerous toxicity evaluations of extracts and metabolites isolated from this plant did not show any significant acute toxicity in experimental animals. Detailed and more comprehensive toxicity profile on mammalian tissues and organs is needed in future studies.

Okhuarobo, Agbonlahor; Falodun, Joyce Ehizogie; Erharuyi, Osayemwenre; Imieje, Vincent; Falodun, Abiodun; Langer, Peter



Antimicrobial, Antioxidant, and Cytotoxic Properties of Vasicine Acetate Synthesized from Vasicine Isolated from Adhatoda vasica L.  

PubMed Central

Adhatoda vasica (L.) (Acanthaceae) is used in the indigenous system of medicine in India. The alkaloid Vasicine was isolated from ethanolic extract of the leaves of A. vasica using column chromatography. Vasicine acetate was obtained by acetylation of Vasicine. Vasicine acetate exhibited good zone of inhibition against bacteria: 10?mm against E. aerogenes, 10?mm against S. epidermidis, and 10?mm against P. aeruginosa. Vasicine acetate showed minimum inhibitory concentration values against bacteria: M. luteus (125??g/mL), E. aerogenes (125??g/mL), S. epidermidis (125??g/mL), and P. aeruginosa (125??g/mL). The radical scavenging activity of Vasicine acetate was the maximum at 1000??g/mL (66.15%). The compound showed prominent cytotoxic activity in vitro against A549 lung adenocarcinoma cancer cell line. Quantification of Vasicine and Vasicine acetate by HPLC-DAD analysis showed their contents to be 0.2293% and 0.0156%, respectively, on dry weight basis of the leaves. Vasicine acetate could be probed further in drug discovery programme. PMID:25632399

Duraipandiyan, V.; Al-Dhabi, N. A.; Balachandran, C.; Ignacimuthu, S.; Sankar, C.; Balakrishna, K.



Antioxidant, Metal Chelating, Anti-glucosidase Activities and Phytochemical Analysis of Selected Tropical Medicinal Plants  

PubMed Central

The purpose of this investigation was to determine the antioxidant potentials and anti-glucosidase activities of six tropical medicinal plants. The levels of phenolic constituents in these medicinal plants were also quantified and compared. Antioxidation potentials were determined colorimetrically for scavenging activities against DPPH and NO radicals. Metal chelating assay was based on the measurement of iron-ferrozine absorbance at 562 nm. Anti-diabetic potentials were measured by using ?-glucosidase as target enzyme. Medicinal plants’ total phenolic, total flavonoid and hydroxycinnamic acid contents were determined using spectrophotometric methods, by comparison to standard plots prepared using gallic acid, quercetin and caffeic acid standards, respectively. Radical scavenging and metal chelating activities were detected in all medicinal plants, in concentration-dependent manners. Among the six plants tested, C. nutans, C. formosana and H. diffusa were found to possess ?-glucosidase inhibitory activities. Spectrophotometric analysis indicated that the total phenolic, total flavonoid and hydroxycinnamic acid contents ranged from 12.13-21.39 mg GAE per g of dry sample, 1.83-9.86 mg QE per g of dry sample, and 0.91-2.74 mg CAE per g of dry sample, respectively. Our results suggested that C. nutans and C. formosana could potentially be used for the isolation of potent antioxidants and anti-diabetic compounds. To the best of our knowledge, this study represents the first time that C. nutans (Acanthaceae family) was reported in literature with glucosidase inhibition activity. PMID:25587331

Wong, Fai-Chu; Yong, Ann-Li; Ting, Evon Peir-Shan; Khoo, Sim-Chyi; Ong, Hean-Chooi; Chai, Tsun-Thai



Urban vegetation change after a hundred years in a tropical city (San José de Costa Rica).  


Urban vegetation is of key importance because a large proportion of the human population lives in cities. Nevertheless, urban vegetation is understudied outside central Europe and particularly, little is known about the flora of tropical Asian, African and Latin American cities. We present an estimate of how the vegetation has changed in the city of San José, Costa Rica, after about one century, with the repeat photography technique (based on a collection of 19th and early 20th century photographs by José Fidel Tristán and others) and with data from the Costa Rican National Herbarium. We found little vegetation change in the landscape of San José during the 20th century, where a total of 95 families and 458 species were collected in the late 19th and early 20th century. The families with most species were Asteraceae, Fabaceae, Poaceae, Lamiaceae, Euphorbiaceae, Solanaceae, Cyperaceae, Acanthaceae, Malvaceae, Piperaceae and Verbenaceae. Similar results have been found in Europe, where the number of plant species often is stable for long periods even when the individual species vary. PMID:21246995

Monge-Nájera, Julián; Pérez-Gómez, Gabriela



Chemical composition and antioxidant activity of Strobilanthes crispus leaf extract.  


This study investigated the components present in and the total antioxidant activity of leaves of Strobilanthes crispus (L.) Bremek or Saricocalyx crispus (L.) Bremek (Acanthacea). Proximate analyses and total antioxidant activity using ferric thiocyanate and thiobarbituric acid methods were employed. Minerals content was determined using the atomic absorption spectrophotometer, whereas the water-soluble vitamins were determined by means of the UV-VIS spectrophotometer (vitamin C) and fluorimeter (vitamins B(1) and B(2)). Catechin, tannin, caffeine, and alkaloid contents were also studied. All data were compared to the previously reported results of Yerbamate, green tea, black tea, and Indian tea. The dried leaves contained a high amount of total ash (21.6%) as a result of a high amount of minerals including potassium (51%), calcium (24%), sodium (13%), iron (1%), and phosphorus (1%). High content of water-soluble vitamins (C, B(1), and B(2)) contributed to the high antioxidant activity of the leaves. The leaves also contained a moderate amount of other proximate composition as well as other compounds such as catechins, alkaloids, caffeine, and tannin, contributing further to the total antioxidant activity. Catechins of Strobilanthes crispus leaves showed highest antioxidant activity when compared to Yerbamate and vitamin E. Consumption of the leafy extract daily (5 g/day) as an herbal tea could contribute to the additional nutrients and antioxidants needed in the body to enhance the defense system, especially toward the incidence of degenerative diseases. PMID:11137889

Ismail; Manickam; Danial; Rahmat; Yahaya



Istituzioni di Logica Matematica 2007-08 Parte sulle interpretazioni e teorie indecidibili  

E-print Network

T . Quindi se T `e decidibile lo `e anche T + . Una estensione finita di una teoria T `e una teoria che si una teoria T `e indecidibile, allora T `e indecidibile. Il viceversa non `e vero: una teoria indecidibile potrebbe avere estensioni finite decidibili (ad esempio la teoria dei campi `e indecidibile, ma la

Berarducci, Alessandro


Useful ethnophytomedicinal recipes of angiosperms used against diabetes in South East Asian Countries (India, Pakistan & Sri Lanka).  


This paper is based on data recorded from various literatures pertaining to ethnophytomedicinal recipes used against diabetes in South East Asia (India, Pakistan and Srilanka). Traditional plant treatments have been used throughout the world for the therapy of diabetes mellitus. In total 419 useful phytorecipes of 270 plant species belonging to 74 Angiospermic families were collected. From the review it was revealed that plants showing hypoglycemic potential mainly belong to the families, Cucurbitaceae (16 spp.), Euphorbiaceae (15 spp.), Caesalpiniaceae and Papilionaceae (13 spp. each), Moraceae (11 spp.), Acanthaceae (10 spp.), Mimosaceae (09 spp.), Asteraceae, Malvaceae and Poaceae (08 spp. each), Hippocrateaceae, Rutaceae and Zingiberaceae (07 spp. each), Apocynaceae, Asclepiadaceae and Verbenaceae (06 spp. each), Apiaceae, Convolvulaceae, Lamiaceae, Myrtaceae, Solanaceae (05 spp.each). The most active plants are Syzigium cumini (14 recipes), Phyllanthus emblica (09 recipes), Centella asiatica and Momordica charantia (08 recipes each), Azadirachta indica (07 recipes), Aegle marmelos, Catharanthus roseus, Ficus benghalensis, Ficus racemosa, Gymnema sylvestre (06 recipes each), Allium cepa, A. sativum, Andrographis paniculata, Curcuma longa (05 recipes each), Citrullus colocynthis, Justicia adhatoda, Nelumbo nucifera, Tinospora cordifolia, Trigonella foenum-graecum, Ziziphus mauritiana and Wattakaka volubilis (4 recipes each). These traditional recipes include extracts, leaves, powders, flour, seeds, vegetables, fruits and herbal mixtures. Data inventory consists of botanical name, recipe, vernacular name, English name. Some of the plants of the above data with experimentally confirmed antidiabetic properties have also been recorded. More investigations must be carried out to evaluate the mechanism of action of diabetic medicinal plants. Toxicity of these plants should also be explained. Scientific validation of these recipes may help in discovering new drugs from these medicinal plants for diabetes. PMID:25176368

Marwat, Sarfaraz Khan; Rehman, Fazalur; Khan, Ejaz Ahmad; Khakwani, Abdul Aziz; Ullah, Imdad; Khan, Kaleem Ullah; Khan, Inam Ullah



In vitro antioxidant potential of dicliptera roxburghiana  

PubMed Central

Background Stress caused by free radicals accumulation result into many hazardous diseases. A number of investigations are focusing to find out the plant oriented natural antioxidant moieties. The basic aim of this research was to investigate the antioxidant potential, total Phenolic and flavonoids contents and photochemical screening of the crude methanol extract and its derived various fractions Dicliptera roxburghiana of Acanthaceae family. Methods Crude methanol extract of aerial parts of Dicliptera roxburghiana (DRME) was partitioned in to n-hexane (DRHF), chloroform (DRCF), ethyl acetate (DREF), n-butanol (DRBF) and the remaining soluble portion as residual aqueous fraction (DRAF). We evaluated the antioxidant activities of the extract and various fractions through different analytical methods such as DPPH, superoxide anion, ABTS, H2O2, hydroxyl radical and phosphomolybdate radical inhibition. In vitro lipid peroxidation and reducing power of the plant was also analyzed. Total flavonoid and phenolic contents of the extract and all fractions were also quantified. Plant was also subjected for preliminary phytochemical screening to confirm the presence or absence of various constituents in the plant. Results Phytochemical screening confirmed the presence of flavonoids, phenolics, tannins, alkaloids, saponins, terpenoids and coumarines. Quantitative analysis revealed the maximum amount of total phenolic and flavonoid contents in DRME while lowest in DRHF. Methanol extract, DREF, DRCF and DRBF exhibited promising antioxidant potential for DPPH, ABTS, H2O2, phosphomolybdate, superoxide anion and hydroxyl radical scavenging capabilities, while these were not appreciable for DRHF and DRAF. All fractions except DRHF and DRAF possess strong reducing power ability and showed appreciable lipid peroxidation inhibition. Conclusion These research investigations revealed that Dicliptera roxburghiana is a potent source of natural antioxidants. Hence the plant can be used for management of different stress and anxiety related ailments. PMID:23777321



Mosquito larvicidal potential of four common medicinal plants of India  

PubMed Central

Background & objectives: Mosquitoes transmit serious human health diseases, causing millions of deaths every year. Plants may be sources of alternative mosquito control agents. The present study was carried out to assess the role of larvicidal activities of the crude extracts of four plants viz. Alternanthera sessilis L. (Amaranthaceae), Trema orientalis L. (Cannabaceae), Gardenia carinata Smith. (Rubiaceae) and Ruellia tuberosa L. (Acanthaceae) against Culex quinquefasciatus Say in laboratory bioassay. Methods: Selective concentrations (0.5, 1 and 1.5%) of crude extract of all four plant leaves were tested against Ist to IVth instar larvae of Cx. quinquefasciatus. Log probit analysis (at 95% confidence level) revealed the LC50 values. Preliminary qualitative phytochemical analyses of crude extracts were also done. The lethal concentrations (%) of crude extracts at 24 h against IIIrd instar larvae were also studied on non-target organisms. Result: In a 72 h bioassay experiment with crude extract, the highest mortality was recorded in 1.5 per cent extract. A. sessilis showed the highest mortality (76.7 %) at 1.5 per cent crude extract against IInd instar larvae having LC50 value of 0.35 per cent, followed by R. tuberosa (LC50 =1.84%), G. carinata (LC50 = 2.11) and T. orientalis (LC50 = 2.95%). The regression equation showed a dose-dependent mortality, as the rate of mortality (Y) was positively correlated with the concentration (X). Phytochemical analysis of the crude extract showed the presence of many bioactive phytochemicals such as steroids, alkaloids, terpenes, saponins, etc. No changes in the swimming behaviour and survivality of non-target organism were noticed at the studied concentrations. Interpretation & conclusions: Crude extract of the four selected plants showed larvicidal activity against Cx. quinquefasciatus. The extracts at the studied concentrations did not produce any harmful effect on non-target organisms. PMID:25222784

Rawani, Anjali; Ghosh, Anupam; Chandra, Goutam



Anti-infective effects of Brazilian Caatinga plants against pathogenic bacterial biofilm formation.  


Abstract Context: The local communities living in the Brazilian Caatinga biome have a significant body of traditional knowledge on a considerable number of medicinal plants used to heal several maladies. Objective: Based on ethnopharmacological data, this study screened 23 aqueous plant extracts against two well-known models of biofilm-forming bacteria: Staphylococcus epidermidis and Pseudomonas aeruginosa. Materials and methods: Crystal violet assay and scanning electron microscopy (SEM) were used to evaluate the effect of extracts on biofilm formation and measurements of the absorbance at 600?nm to assess bacterial growth. Selected extracts were investigated regarding the cytotoxicity by MTT assay using mammal cells and the qualitative phytochemical fingerprint by thin layer chromatography. Results: Harpochilus neesianus Mart. ex Nees. (Acanthaceae) leaves, Apuleia leiocarpa Vogel J. F. Macbr. (Fabaceae), and Poincianella microphylla Mart. ex G. Don L. P. Queiroz (Fabaceae) fruits showed non-biocidal antibiofilm action against S. epidermidis with activities of 69, 52, and 63%, respectively. SEM confirmed that biofilm structure was strongly prevented and that extracts promoted overproduction of the matrix and/or bacterial morphology modification. Poincianella microphylla demonstrated toxicity at 4.0?mg/mL and 2.0?mg/mL, A. leiocarpa presented toxicity only at 4.0?mg/mL, whereas H. neesianus presented the absence of toxicity against Vero cell line. Preliminary phytochemical analysis revealed the presence of flavonoids, terpenoids, steroids, amines, and polyphenols. Discussion and conclusions: This work provides a scientific basis which may justify the ethnopharmacological use of the plants herein studied, indicating extracts that possess limited mammal cytotoxicity in vitro and a high potential as a source of antibiofilm drugs prototypes. PMID:25472018

Silva, Laura Nunes; Trentin, Danielle da Silva; Zimmer, Karine Rigon; Treter, Janine; Brandelli, Clara Lia Costa; Frasson, Amanda Piccoli; Tasca, Tiana; Silva, Alexandre Gomes da; Silva, Márcia Vanusa da; Macedo, Alexandre José



Effect of medium composition and light on root and rhinacanthin formation in Rhinacanthus nasutus cultures.  


Rhinacanthus nasutus (L.) Kurz (Acanthaceae) has long been used in Thai traditional medicine for treatment of tinea versicolor, ringworm, pruritic rash, and abscess. The active constituents are known as a group of naphthoquinone esters, rhinacanthins. This work focused on establishment of R. nasutus root cultures and determination of rhinacanthin production. Induction of R. nasutus root formation was accomplished on solid Gamborg's B5 (B5) medium, supplied with 0.1?mg/L indole-3-butyric acid (IBA) and 20?g/L sucrose. The effects of explants (whole leaf explants and four-side excised leaf explants), light and medium composition on root and rhinacanthin formation were investigated. The root formation from the whole leaf explants was 10 times higher than that from the four-side excised leaf explants. In addition, light possessed an inhibitory effect on the root and rhinacanthin formation of R. nasutus. Medium manipulation found that Murashige and Skoog (MS) medium supplied with 3?mg/L IBA and 30?g/L sucrose was the most suitable for induction of the root formation. Unfortunately, the obtained root cultures produced only rhinacanthin-C in very low amount, 0.026?mg/g dry weight (DW), when they were transferred into the same MS liquid medium. With semisolid medium (4?g/L agar) of the same MS composition, however, the root cultures appeared to produce higher content of rhinacanthin-C, -D and -N (3.45, 0.07 and 0.07?mg/g DW, respectively). Our finding suggests that culturing in semisolid medium is capable of improving of rhinacanthin production in R. nasutus root cultures. PMID:20843160

Panichayupakaranant, P; Meerungrueang, W



In vitro antimalarial activity of extracts of some plants from a biological reserve in Costa Rica.  


Treatment with the usual antimalarial drugs, have induced parasite resistance, reinforcing the need to finding natural antimalarial components that would be found on plants from the forest. Therefore, we decided to look for these components in Costa Rican plants from a protected forest area. Fresh and dry extracts of roots, bark, leaves, flowers and fruits of 25 plants from a biological reserve in Costa Rica, Reserva Biol6gica Alberto Manuel Brenes (REBAMB), were studied in vitro for the presence of substances with antimalarial activity. By studying the inhibition of P berghei schizogony, we assessed the antimalarial activity of several plant extracts: Aphelandra aurantiaca, A. tridentata (Acanthaceae); Xanthosoma undipes (Araceae); Iriartea deltoidea (Arecaceae); Neurolaena lobata (Asteraceae); Senna papillosa, Pterocarpus hayessi, Lonchocarpus pentaphyllus (Fabaceae); Nectandra membranacea, Persea povedae, Cinamomum chavarrianum (Lauraceae); Hampea appendiculata (Malvaceae); Ruagea glabra, Guarea glabra (Meliaceae); Psidium guajava (Myrtaceae); Bocconia frutescens (Papaveraceae); Piper friedrichsthalii (Piperaceae); Clematis dioica (Ranunculaceae); Prunus annularis (Rosaceae); Siparuna thecaphora (Siparunaceae); Solanum arboreum, Witheringia solanacea (Solanaceae); Ticodendrum incognitum (Ticodendraceae); Heliocarpus appendiculatus (Tiliaceae) and Myriocarpa longipes (Urticaceae). We used different parts of the plants as well as fresh and dried extracts for testing IC50. The solid content of the extracts ranged from 1-71.9 microg/mL. The fresh extracts showed stronger activity than the dry ones. Since the plants showing the strongest antimalarial activity are very common in Central America, and some similar genera of these plants have shown positives results in South America, we considered important to present these findings for discussion. On the other hand, this is the first systematic study of this kind ever realized in a circumscribed and protected area of Costa Rica. PMID:23894953

Chinchilla, Misael; Valerio, Idalia; Sánchez, Ronald; Mora, Víctor; Bagnarello, Vanessa; Martínez, Laura; Gonzalez, Antonieta; Vanegas, Juan Carlos; Apestegui, Alvaro




Microsoft Academic Search

La violencia contra la pareja, especialmente la ejercida por el hombre sobre la mujer, es una de las formas más graves de violencia interpersonal, presenta una elevada prevalencia y numerosos interrogantes sobre su génesis, desarrollo y control. En la actualidad es una preocupación social que demanda una importante inversión en medidas socio-sanitarias para combatir sus efectos en las víc- timas

A. Andrés Pueyo; S. López; E. Álvarez



Optimización on-line de Sistemas de Tiempo Real con Computación Imprecisa Basados en Recompensas  

Microsoft Academic Search

Resumen. En este trabajo se aborda el problema de optimizar, en tiempo de ejecución, la recompensa obtenida de un conjunto de tareas de tiempo real compuestas por una parte obligatoria de tiempo real duro y otra opcional. La ejecución de la parte opcional de una tarea proporciona una recompensa local según una determinada ley de recompensas no decrecientes que, en

José M. Urriza; Ricardo Cayssials; Javier D. Orozco


A lesson to leArn from developed countries: the cAse of stAte BrAnching deregulAtion in the us* Una lección para aprender de los países desarrollados: el caso de la desregUlación de sUcUrsales en ee.UU  

Microsoft Academic Search

The era of US state branching deregulation started in 1970 and ended up with the enactment of the Riegle Neal Act of 1994. One of the purposes of the branching restriction was to avoid bank concentration. The following paper addresses the influence of the state deregulation on commercial banks' efficiency within the US. We calculate an indicator of bank efficiency

Jorge Guillén



UNA APLICACIÓN DE LA NOVENA EDICIÓN DE LA CLAVE DEL SOIL TAXONOMY PARA LA CLASIFICACIÓN DE SUELOS. CASO ESTACIÓN EXPERIMENTAL SANTA ROSA, MÉRIDA Clasification Soils Agricultural Experimental Station of Santa Rosa, Mérida Acconding With Ninth edition of Key to Sail Taxonomy  

Microsoft Academic Search

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

Peña Guillén



The Disequilibrium Real Wage Rate Hypothesis: An Empirical Evaluation (L'hypothèse du déséquilibre du taux de salaire réel: évaluation empirique) (La hipótesis de desequilibrio del salario real: Una evaluación empírica)  

Microsoft Academic Search

Both the share of labor costs in value added and the unemployment rate rose in many industrial countries during the 1970s and early 1980s. These increases have led many observers to conclude that real wages are now too high and are a source of \\

Jacques R. Artus



VARIABLES Y FACToRES ASoCIADoS AL APRENDIzAJE ESCoLAR. uNA DISCuSIoN DESDE LA INVESTIGACIoN ACTuAL* Variables and factors associated to the scholastic learning. A discussion from actual investigation  

Microsoft Academic Search

In the present article appears a revision and discussion on the main currents of actual investigation around the variables and factors associated to scholastic learning. The theore- tical and methodologic problems which are at the base of the knowledge about the factors associated to the learning are considered. Also the possibility of a conceptual model appears from a psicoeducative frame,

Rodrigo Cornejo Chávez; Jesús María; Redondo Rojo



Microsoft Academic Search

Objective: To determine the level of immune response after a mass vaccination campaign against rabies in two areas which presented cases of canine rabies in the last years. Materials and methods: A serologic survey was carried out in 101 and 199 dogs located respectively, in the cities of Tambo Grande (Piura) and Juliaca (Puno) and a rabies serum mouse neutralization

Ricardo López I; Albina Díaz O; Edgar Condori C



Seroprevalencia de la infección por Trypanosoma cruzi y factores asociados en población adulta en una zona de alta endemicidad de Arequipa, Perú Seroprevalence of infection by Trypanosoma cruzi and associated factors in the adult population in a highly endemic area of Arequipa, Perú  

Microsoft Academic Search

Objective: determine the seroprevalence of infection by T. cruzi in the population above age 15 in the valley of Vítor, describing general cha- racteristics and the presence of associated factors. Materials and Methods: 499 people above age 15 were randomly se- lected; epidemiological information was obtained through a survey. The diagnosis of the disease was made by ELISA and IIF.

Yván Sánchez Sánchez; Renato Velásquez Talavera; Luis Vásquez Huerta



A Visit to the Library: Activities for Families with Children Ages 3 to 5 [Presented by]"Between the Lions[R]" = Una visita a la biblioteca: Actividades para familias con ninos de 3 a 5 anos [presentado por]"Between the Lions[R]."  

ERIC Educational Resources Information Center

"Between the Lions" is a Public Broadcasting System program promoting literacy for children ages 4 through 7 years combining state-of-the-art puppetry, animation, live action, and music to achieve its mission of helping young children learn to read. This guide, in English- and Spanish-language versions, provides suggestions for parents of 3- to…

WGBH-TV, Boston, MA.


For a Child, Life is a Creative Adventure: Supporting Development and Learning through Art, Music, Movement, and Dialogue. A Guide for Parents and Professionals. = Para los ninos, la vida es una aventura creativa: Como estimular el desarrollo y el aprendizaje por medio de las artes visuales, la musica, el movimiento y el dialogo. Guia para padres de familia y profesionales.  

ERIC Educational Resources Information Center

Recognizing that creativity facilitates children's learning and development, the Head Start Program Performance Standards require Head Start programs to include opportunities for creative self-expression. This guide with accompanying videotape, both in English- and Spanish- language versions, encourages and assists adults to support children's…

Cohen, Elena


Accidentes en plantas nucleares de electricidad y el riesgo de cáncer

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.


Trajes espaciales - Duration: 0:32.  

NASA Video Gallery

Un traje espacial es mucho más que un conjunto de prendas que los astronautas usan en los paseos espaciales. En realidad, un traje espacial totalmente equipado es una nave para una persona, formada...


Fatiga (PDQ®)

Resumen de información revisada por expertos acerca de la fatiga, una afección caracterizada por extremo cansancio e incapacidad para funcionar por la falta de energía, que a menudo se observa como una complicación del cáncer y su tratamiento.


Asunción Garden  

USGS Multimedia Gallery

Colonial style courtyard in Asunción with various ornamentals, including exotic species. Se ven dos ejemplares de Palmera Imperial (especie exótica), una la que está en primer plano, con una orquídea Cattleya sp., dos Cocoteros o Mbocayá (Acrocomia totai). La ...


Rubén Darío: El poeta en el teatro  

E-print Network

Balmaceda Toro, y también una verdadera capital, en que había teatros, una ópera, bibliotecas públicas, museos, y grandes diarios. Como gacetillero para La Época, Darío fue designado para escribir la crónica teatral de la temporada artística (de octubre...

Lamb, Ruth S.



Floristic composition and vegetation analysis in Hail region north of central Saudi Arabia  

PubMed Central

In this study, 19 sites representing different habitats in Hail region were regularly visited for two years, in each site 2–5 stands were selected for investigating floristic composition and vegetation types in the area. A total of 124 species representing 34 families were recorded. The family Asteraceae is represented by the highest number of species (21 species) followed by the Poaceae (17 species) and the Brassicaceae (10 species) whereas, 15 families including Acanthaceae, Convolvulaceae, Moraceae, Nyctaginaceae and Primulaceae, are represented by a single species each. Chronological analysis of the vegetation in the area revealed the domination of Saharo-Sindian elements in the wild vegetations and of weedy species in the cultivated plots. Therophytes and chamaephytes are the dominating life forms of the vegetation spectra; therophytes represent 49.20% and chamaephytes represent 29.00% of the total species in the study area. Application of TWINISPAN and DECORANA classification and ordination techniques to the data produced seven vegetation groups. Ruderal habitats comprised two small groups A and F dominated by Phragmites australis and Imperata cylindrical (A), Euphorbia peplus and Sisymbrium irio (F), respectively. Two vegetation groups (B and G) have been recognized in the mountains and slopes dominated by Launaea mucronata, Trigonella stellata (B) and Ficus palmate and Fagonia bruguieri (G). Other two groups (C and E) inhabit the desert and mountainous wadies; these are represented by Gymnocarpos decandrus and Ochradenus baccatus (C) and Senecio glaucus subsp. coronopifolius and Rumex equisetiforme (E). On the other hand, one group (D) inhabits the cultivated plots and is represented by Plantago albicans and Rumex vesicarius, the last group also includes species restricted to the sand dune habitat of the Al-Nafud desert north of Hail city and represented by Calligonum polygonoides and Halyxolon salicornicum. The vegetation analysis indicated the invasion of Hail Flora by some foreign weeds such as Solanum nigrum, Lactuca serriola and Amaranthus lividus. The presence of these weeds points out the need to monitor the vegetation change in Hail region, and also other regions of Saudi Arabia, in order to elucidate the human impact on the wild plants diversity as human activities change with the fast development in the kingdom. PMID:23961067

El-Ghanim, Wafaa M.; Hassan, Loutfy M.; Galal, Tarek M.; Badr, Abdelfattah



LINEs Mobilize SINEs in the Eel through a Shared 3? Sequence  

Microsoft Academic Search

We characterized members of the LINE (UnaL2) and SINE (UnaSINE1) families from the eel genome and found that these LINE\\/SINE partners share similar 3? tails. A retrotransposition assay in HeLa cells demonstrated that the 3? conserved tail of UnaL2 is necessary for its retrotransposition. This 3? tail is recognized in trans by the UnaL2 reverse transcriptase at a surprisingly high

Masaki Kajikawa; Norihiro Okada



Ricerche sulla capacità lentogena dell'iride degli Anfibi  

Microsoft Academic Search

Dal settore irideo superiore diTriton eDiscoglossus trapiantato autoplasticamente nell'orbita (dopo enucleazione del globo oculare) o sotto la cute, con o senza retina, non si forma mai una lente. Se invece l'innesto viene praticato nella cavità addominale allora, in una certa percentuale di casi, si ottiene una lente. CiÒ porta a pensare che nel determinismo del fenomeno una grande importanza debba

Alberto Monroy



Performance reviews  

E-print Network

, bastones, un kepis, una cuerda que sirve de culebra y una manta roja de múltiples usos. La ausencia de una escenografía pasa desapercibida puesto que el juego de luces es tan efectivo que reemplaza cualquier andamiaje postizo. Una vez enterados de que... comunicación visual más que verbal. Su teoría se fundamenta en el llamado "exorcismo mágico," es decir, utilizar el teatro para subvertir la imaginación y la lógica, asombrando al espectador mediante imágenes que revelen la vileza del mundo. Su "teatro de la...




La educación en Colombia: Análisis del marco normativo y de los indicadores sectoriales  

Microsoft Academic Search

En este documento se presenta una visión amplia de los problemas y del funcionamiento del sector educativo en Colombia, con énfasis en la educación pública. Inicialmente, se realiza una breve descripción de la política educativa durante las últimas décadas. Posteriormente, se realiza una evaluación detallada de las normas sobre descentralización educativa, así como de aquellas que rigen la carrera docente

Ana María Iregui; Ligia Melo; Jorge Ramos



Reference Guide for Texas Ranchers (Spanish)  

E-print Network

tanque del aspersor con agua a un nivel marcado. l Conduzca en una l?nea recta por 660 pies, operando el aspersor a una presi?n y una velocidad constante. l Rellene el tanque al nivel original para determinar el n?mero de galones usados. l...

McGinty, Allan



Constitutive equation and compatibility of the external loads for linear elastic masonry-like materials  

Microsoft Academic Search

Sommario La prima parte del lavoro è dedicata alla ricerca di una soddisfacente motivazione dell'equazione costitutiva comunemente usata per i solidi murari. Si dimostra che essa è il risultato di tre ipotesi costitutive: elasticità infinitesima, non resistenza a trazione, e un postulato di normalità. Viene inoltre data una condizione necessaria e sufficiente per l'esistenza di una energia di deformazione. Nella

Gianpietro Del Piero




Microsoft Academic Search

Sommario In questo lavoro viene analizzato il comportamento Damage Tolerant di un pannello a costruzione sandwich in Alluminio-Nomex utilizzato per fusoliere di elicotteri e soggetto a carico di taglio. Il provino è stato testato in una cornice dedicata per trasmettere un carico pulsante di puro taglio. Una cricca artificiale è stata realizzata al centro del pannello su una delle pelli

M. Giglio; A. Manes


Inundaciones recurrentes, sistemas de informacin geogrfica y teledeteccin  

E-print Network

, donde el agua sobrepasó los contadores eléctricos #12;Los contadores de luz en esta comunidad de Cachete unas lluvias de varias horas en una zona "no inundable" luego de la construcción de una urbanización en

Gilbes, Fernando



Microsoft Academic Search

De una forma u otra la tecnología se está convirtiendo en una parte importante en la estrategia de valor de las empresas turísticas, y quizás de una forma poco responsable éstas han implementado las nuevas tecnologías -sobre todo en lo que respecta a las tecnologías de la información y las telecomunicaciones- sin un estudio adecuado de los costes y beneficios

Amparo Sancho Pérez; Amparo Maset Llaudes; David Martín; Secretaría de Turismo


Educación y equidad. Algunos aportes desde la noción de educabilidad 1  

Microsoft Academic Search

La gran mayoría de los estudios orientados a esclarecer la relación entre educación y equidad social coinciden en centrar la atención en la educación como una condición indispensable para el logro de una sociedad más equitativa. Los argumentos que permiten pensar a la educación como una instancia previa a la equidad, como su condición de posibilidad, son muy diversos, y

Néstor López



Microsoft Academic Search

El análisis de los fenómenos que acontecen en el ámbito organizacional, relacionados con la administración ha estado signado por una perspectiva unidimensional, que capta solamente una parte del fenómeno y lo fragmenta. Esta perspectiva es la más visible, sin embargo, al hacer una evaluación de los estudios en la conformación de la ciencia de la administración se puede observar la

Leonel Céspedes Tamayo; Diana Rosa Montero Tamayo



Control de la congestión vehicular en Bogotá con herramientas microeconómicas  

Microsoft Academic Search

A partir de un diagnóstico de la congestión que las causas del problema van más allá de un exceso de vehículos y una falta de vías. Se estudian cuatro alternativas para reducir la congestión: la restricción de circulación por placas, el cobro por entrar en una zona de la ciudad, una política de parqueo y la creación de un nuevo

Arturo Ardila Gómez



Family Financial Fitness Exercises: The Importance of Saving Money  

E-print Network

pr?stamos a una tasa de inter?s m?s baja cuando los necesite. ? Busque una cuenta de ahorros con baja o sin tarifa por servicio. ? Podr?a necesitar un dep?sito m?nimo al abrir una cuenta de ahorros. Prop?ngase hoy la meta de ahorrar el dinero...

White, Lynn



El uso del agua en Níjar: Implicaciones ambientales del modelo actual de gestión  

Microsoft Academic Search

RESUMEN Níjar, municipio del SE almeriense, experimenta, hoy por hoy, una coyuntura de escasez del agua sin precedentes. El modelo de gestión actual, basado en la explotación de las aguas subterráneas, y protagonizado por una agricultura intensiva en crecimiento y una incipiente actividad turística, ha conducido al progresivo agotamiento de los acuíferos locales. En respuesta a tal coyuntura, se implementan

Francisco Javier Toro Sánchez



Lesson 11: The Verb NA  

E-print Network

SISI NI- TU- Nina Tuna I have We have 2nd Person: WEWE NYINYI U- M- Una Mna You have You (pl.) have 3rd. [I have a pen.] Sisi tuna kalamu. [We have pens.] 2. Wewe una karatasi. [You have paper.] Nyinyi mna.] 4. Mimi nina kitabu. [I have a book.] Sisi tuna vitabu. [We have a book.] 5. Wewe una rafiki. [You


Automi Ibridi Carla Piazza1  

E-print Network

#12;Input 2: Dati Sperimentali Polymerase chain reaction (PCR) `e una tecnica per amplificare esponenzialmente un frammento di DNA (RNA) #12;Input 2: Dati Sperimentali Polymerase chain reaction (PCR) `e una Polymerase chain reaction (PCR) `e una tecnica per amplificare esponenzialmente un frammento di DNA (RNA) Pu

Piazza, Carla


Carl Rogers in the Therapy Room: A listing of session transcripts and a survey of publications referring to Rogers' sessions \\/ Carl Rogers im Therapieraum: Eine Auflistung von Sitzungstranskripten und ein Überblick über Publikationen, die sich auf Rogers' Therapiesitzungen beziehen \\/ Carl Rogers en el Consultorio: Una lista de las sesiones transcriptas y un relevamiento de publicaciones referidas a las sesiones de Rogers \\/ Carl Rogers in de therapiekamer: Lijst van sessietranscripten en overzicht van publicaties over casusmateriaal van Rogers  

Microsoft Academic Search

To facilitate psychotherapy research and the education of students in client-centered therapy, the authors present two lists: a ‘Sessions List’ of transcripts of Rogers' therapy sessions, including his demonstrations of client-centered therapy, and a ‘Publications Survey’ of the references to publications reporting studies of Rogers' sessions.

Germain Lietaer; Barbara T. Brodley



El juego: Texto dramático y montaje  

E-print Network

director en una universidad americana, con elenco estrictamente estudiantil.11 Por las limitaciones del medio se recurrió a la concepción realista que la autora indica en su acotación primera. Ahora, en lugar del parque, las dos Anas están localizadas en... se proyecta "una típica relación de dependencia" entre Ana I y Ana II, dos seres del lumpen que desarrollan una serie de juegos, no exentos ni de crueldad ni de ternura, para sobrevivir la abyecta situación de explotación a la que han sido...

Castillo, Susana D.




Responda cada pregunta lo mejor que pueda. Si no está seguro de alguna repuesta, proporcione una aproximación o cálculo. Adivinar es mejor que no contestar nada. Use exclusivamente un lapicero de tinta negra. No use lápiz ni rotulador. Marque una X en la caja al lado de su respuesta. Si hace algún cambio, tache la respuesta incorrecta y ponga una X en la caja al lado de la respuesta correcta. Además, marque un círculo alrededor de la respuesta correcta.


ccsd00002493, Alguns fenomens de continuaci o anal tica  

E-print Network

ccsd­00002493, version 1 ­ 6 Aug 2004 Alguns fenomens de continuaci#19;o anal#19;#16;tica en una;#16; obtinguda #19;es una continuaci#19;o anal#19;#16;tica (o tamb#19;e un prolungament anal#19;#16;tic) de f p : C 1 ! C ; direm tamb#19;e que f q : C 2 ! C #19;es una continuaci#19;o anal#19;#16;tica de f p : C 1


Reti di calcolatori Modulo II vers. 4.0  

E-print Network

in luce ciò che di occulto c'era ancora nel fenomeno. » (Luigi Galvani) da Wikipedia #12;8 WAN Circuit'elettricità (Galvani 1783) « Disseccai una rana, la preparai e la collocai sopra una tavola sulla quale c'era una switching Primi esperimenti con l'elettricità (Galvani 1783) #12;9 WAN Circuit switching Primi esperimenti

Lo Cigno, Renato Antonio


Otra vez el Festival de las Américas en Montreal  

E-print Network

introducción de una nueva teatralidad en nuestro continente. Durante décadas el teatro latinoamericano estuvo permeado y sujeto al discurso político, esto es, el teatro como medio para hacer política, lo cual condujo, a nuestro ver, a una especie de... bancarrota teatral doble: por una parte, el teatro no reflexionó sobre sí mismo, sobre su oficio, sobre su especificidad misma como espectáculo y como trabajo sobre el actor y sobre el espacio escénico: nuestras sociedades han cambiado, su discurso...

de Toro, Fernando



Cooking with Canned Beef Stew (Spanish)  

E-print Network

E-80S 12/08 Platillos con estofado de carne de res en lata El estofado de res en lata viene cocido y listo para comer. Cada lata de 24 onzas equivale a tres porciones de 1 taza cada una. El guisado de res constituye una buena fuente de vitamina A...?malas antes de un a?o de haberlas obtenido. Una vez abierta la lata, guarde el sobrante en un envase cubierto dentro del refrigerador y cons?malo durante los siguientes 4 d?as. Pay de estofado de carne (rinde aproximadamente 3 porciones, de una taza cada...

Anding, Jenna



Scienza dei servizi  

NASA Astrophysics Data System (ADS)

I servizi sono oramai centrali nella vita sociale di ogni Paese. L'aspettativa di ogni attore sociale, sia esso cittadino/utente e/o istituzione, è quella di ricevere da uno scambio che ha alla base un servizio un contributo che si caratterizza per una qualità intrinseca. Il mantenimento di tale promessa richiede all'azienda erogatrice un forte coinvolgimento, nel disegno del servizio, degli utenti ed una capacità di gestione della conoscenza; ciò è particolarmente significativo per quei servizi che si caratterizzano per una forte personalizzazione o complessità progettuale. Disegnare un servizio, metterlo in produzione e gestirne l'erogazione ha una complessità variabile in base al grado di coinvolgimento dei destinati ed alle dimensioni critiche che esprimono le condizioni di fattibilità di un servizio di qualità appropriato alle attese degli utilizzatori. Ugualmente la globalizzazione dell'economia e la scarsità delle risorse ha portato l'attenzione, ai fini della sostenibilità delle condizioni sopra richiamate, di una ricerca di modelli e strumenti che permettano una valutazione e una standardizzazione dei processi di produzione ed erogazione secondo condizioni di economicità. Tali primi e sintetici elementi hanno condotto diversi attori istituzionali, grandi imprese ed università attraverso i loro centri di ricerca, ad una azione di riflessione sul grado di "ingegnerizzazione" dei processi sottesi alla erogazione dei servizi ed in particolare ai servizi che attuano le politiche dei grandi settori di base dell'economia di una Nazione: educazione, sanità, sociale, sviluppo infrastrutture ecc.

Cavenago, Dario; Mezzanzanica, Mario


Le genre Thaumatomyrmex Mayr 1887, cryptique et prdateur spcialiste de Diplopoda Penicillata Instituto de Investigacin de Recursos Biolgicos Alexander von Humboldt  

E-print Network

especializada en los Penicillata (Myriapoda, Diplopoda). Estos últimos, usan de manera notable una defensa, Diplopoda Penicillata. predation on Penicillata (Myriapoda, Diplopoda). The latter use a remarkable physical

Villemant, Claire


Estudio de la fisiología del esfínter anal interno porcino y de la rata, y de la fisiopatología de las alteraciones de la motilidad del esfínter anal interno en pacientes con fisura anal.  

E-print Network

??Las patologías anorectales benignas (fisura anal, incontinencia fecal, hemorroides) presentan una elevada prevalencia. De forma general, se desconoce la fisiopatología de estas enfermedades en las… (more)

Opazo Valdés, Álvaro Javier



Late Pleistocene- Holocene Dynamics of a Central Himalayan Glacier using multi-proxy data  

NASA Astrophysics Data System (ADS)

Palaeoglacial reconstruction based on geomorphological mapping in the Pindari glacier valley of Central Himalaya has revealed the presence of five glacial stages with decreasing magnitude. The oldest and most extensive stage-I glaciation deposited sediments upto an altitude of 2200 masl. The stage-II glaciations luminescence dated to 25 × 2 ka, has deposits at 3200 masl. Remnants morainic ridges found around 3850 masl and dated to 6 × 1 ka represent the Stage-III glaciations. The sharp crested crescentic moraine extending from around 3650 masl to 3900 masl is attributed to stage-IV glaciation and is dated to 3 × 1 ka. Four sharp crested unconsolidated moraines on the valley floor represent the stage-V. A 435 cm deep Glacio-lacustrine sedimentary deposit from Jeha Gaer, in the vicinity of Pindari Glacier has been analysed using multiproxy data. The palynological and mineral magnetic data aided with 14C and Optically Stimulated Luminescence (OSL) dates suggests that the region has witnessed variability in climatic conditions. The study suggests that this region has experienced at least six major natural climatic changes during the last 7,000 years. The climate for the region has been worked out to be cold and dry during 7 ka BP followed by five different vegetational shifts. The vegetation complex as marked by high conifers associated with broad leaved as well as herbaceous taxa and high magnetic susceptibility suggests the amelioration of climate during 7 ka to 4.9 ka BP. Thereafter, during 4.9 ka to 1.75 ka BP, the climate once again shows cold and drier condition as evidenced by acceleration of alpine herbaceous taxa with gradual decrement of conifers and broad leaved taxa. However, during 1.75 ka to 0.9 ka BP, the climate seems to have become relatively warm and moist (~Medieval Warm Period) as evidenced by the presence of both conifers and broad leaved taxa along with fair amount of Rhododendron. During 0.9 ka to 0.2 ka BP, a drastic climatic change has been witnessed (~Little Ice Age) as evidenced by the relative decline in conifers and broad leaved taxa except Quercus and Rhododendron. The sediments of this zone also show lower values of the magnetic susceptibility. Since the last 300 yr BP onwards, the vegetation complex including conifers, broad leaved taxa along with herbaceous elements along with high magnetic susceptibility indicates warm and moist climatic regime. The presence of cereals (>60?m) along with culture pollen like Tubulifloreae, Acanthaceae, Caryophyllaceae and Polygonaceae also support the high pastoral activity during this phase. Further, the steady presence of both monolete and trilete fern spores suggest an overall warm and moist climatic condition as prevailing presently in and around the study area. It is hereby emphasised that both the palynological and environmental magnetic climatic proxies suggest that in the (central) Himalayan region, the present phase of warming started almost 300 years BP and seems to have been continuing since then. The warming of climate thus seems to have been initiated prior to the beginning of the anthropogenic activity.

Bali, R.



Laboratorio didattico di matematica computazionale  

E-print Network

frattale fern (felce) Il frattale fern si ottiene disegnando una successione di punti generati casual frattale Fern `e costruito nel modo seguente. Definiamo il vettore p = [0.85 0.92 0.99 1]T che rappresenta + bi. Esercizio 3. Si scriva una function fern(m) che disegna sul piano i punti rapp- resentati dai

Meini, Beatrice


Aspectos Económicos del Gobierno de Carlos Lleras Restrepo. (Colombia, 1966-1970)  

Microsoft Academic Search

El gobierno de Carlos Lleras Restrepo se destaca en la historia de Colombia por haber introducido una reforma institucional de amplias proporciones que fortaleció las bases del Estado intervencionista. Este hecho, sumado a una concepción estructuralista sobre el manejo monetario y cambiario, permitió un evidente despegue del sector exportador no tradicional y un crecimiento del PIB sin antecedentes en la

Pascual Amézquita Zárate



La acrilamida en los alimentos y el riesgo de cáncer

Hoja informativa que examina las investigaciones sobre una posible conexión entre la acrilamida en los alimentos y el riesgo de cáncer. La acrilamida es una sustancia química que se encuentra en ciertos alimentos, a niveles especialmente altos en papitas fritas, papas a la francesa y en otros alimentos que se cocinan a temperaturas altas.


Se necesitan 50 000 fumadores y exfumadores para el Estudio Nacional de Exámenes de Pulmón (NLST)

El Instituto Nacional del Cáncer (NCI) lanzó hoy un nuevo estudio para determinar si el examinar a las personas ya sea con una tomografía computarizada espiral o con una radiografía de pecho antes de que tengan síntomas puede reducir las muertes por cáncer de pulmón.


Asociación entre el virus XMRV y enfermedades humanas: preguntas y respuestas

El XMRV es un retrovirus del que se informó por primera vez en 2006 como una causa potencial del cáncer de próstata. Está estrechamente relacionado con los virus de leucemia murina, los cuales causan una amplia variedad de cánceres así como enfermedades inmunológicas y neurológicas en ratones.



EPA Science Inventory

La meta del ETV es verificar, a travs de una evaluacin de informacin objectiva y de calidad, las caracteristicas del desempeo de tecnologas comerciales ambientales. As el ETV proporciona a los compradores y los licenciadores potenciales una valoracin imparcial y creble d...


Quemadura por ácido nítrico  

Microsoft Academic Search

Presentamos el caso de una quemadura química producida en un paciente de 32 años, magrebí, tra- bajador en una explotación agrícola que tras confundir el agente corrosivo (ácido nítrico) con agua, se produjo el accidente fortuito. Las quemaduras afectaron a toda la superficie de ambas manos. Este potente corrosivo originó que- maduras cutáneas graves, dolor y decoloración amarilla. El paciente

Martínez García M; López Jover JC


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


Atributos básicos del modelo cubano de Gestion Tributaria Moderna y el desempeño del Administrador Tributario en Cuba  

Microsoft Academic Search

El trabajo que se presenta constituye el resumen de una investigación sobre la política fiscal en Cuba para fomentar una cultura tributaria, sustentada en el conocimiento económico sobre las actuales tendencias y atributos básicos de las administraciones tributarias de avanzada lo que es importante como punto de referencia para evaluar el estado de desarrollo de la política fiscal cubana e

Damaris de la Caridad García Milián



Los Presupuestos Generales de Estado para 2007 : diferencias entre el proyecto de presupuestos y los presupuestos aprobados y análisis de las políticas de gasto gestionadas por el Estado y por la Seguridad Social  

Microsoft Academic Search

Aunque en España los Presupuestos Generales del Estado abarcan un ámbito limitado dentro las Administraciones Públicas,1 tienen una gran importancia pues constituyen el principal instrumento financiero del gobierno para conseguir sus fines de política económica. En general, es conveniente analizar los presupuestos desde diferentes perspectivas. Por una parte, es preciso conocer sus efectos globales sobre la economía en su conjunto,

Valentín Edo Hernández



Mercado telefónico en México: diez años después de la privatización de Telmex  

Microsoft Academic Search

El sector de las telecomunicaciones en México experimentó una profunda transformación durante la década de los años noventa: el monopolio público telefónico fue privatizado (1990), se emitió una nueva ley del sector (1995), se creó un nuevo ente regulador (1996) y se abrió a la competencia el segmento de larga distancia (1997). El cambio estructural en el sector trajo consigo

Leonardo E. Torre Cepeda; Armando López Velazco




Microsoft Academic Search

Los problemas de la consolidación de la democracia en México y en América Latina ocupan un lugar central en el debate político contemporáneo. Una adecuada revisión de este problema nos conduce a analizar una serie de factores inherentes a la llamada crisis de gobernabilidad y vincularlos con lo que algunos estudiosos y autoridades a todos los niveles de gobierno, han

Samuel Hernández López



Las opciones reales en la evaluación de inversiones bajo incertidumbre  

Microsoft Academic Search

Las aportaciones mas actuales en el campo de las finanzas continúan apuntando a la maximización del valor de la empresa, pero en este orden se imponen preguntas como, ¿se crea valor con la inversión?, ¿es o no una decisión correcta desde el punto de vista económico y financiero?. La teoría de opciones constituye una de las bases más importantes de

A. Lauchy Sañudo; H. Domínguez Reyes



Hacia un esbozo de macroeconomía a partir de Sraffa  

Microsoft Academic Search

Comenzamos este trabajo tanteando cuál o cuáles podrían ser los modelos de origen esrafiano que podrían presentarse como alternativa al modelo keynesiano\\/kaleckiano y que fuera el embrión de una Macroeconomía esrafiana. Aunque todo es opinable, parece claro que Sraffa no tiene una función de consumo al modo que lo tiene el binomio Keynes\\/Kalecki, que además está en el núcleo duro

Antonio Mora Plaza



¿Puede la escuela del siglo XXI educar a los ciudadanos y ciudadanas del siglo XXI?  

Microsoft Academic Search

Los graves problemas de nuestro mundo reclaman una urgente respuesta educativa por parte del sistema escolar, pero esa respuesta no es adecuada, pues dicho sistema sigue funcionando con características muy tradicionales. La educación para la ciudadanía se presenta como una posibilidad de reorientar la educación hacia finalidades más acordes con los retos que ésta debe afrontar actualmente; sin embargo, entre

Francisco F. García Pérez; Nicolás de Alba Fernández



Cambio estructural en la competitividad ecuatoriana después de la dolarización  

Microsoft Academic Search

Muchos estudios teóricos y empíricos establecen que una política monetaria contractiva tiene efectos negativos en la competitividad y que pueden ser permanentes. El presente artículo busca evidencia de un cambio permanente en la competitividad ecuatoriana con respecto a sus socios comerciales Colombia y Perú entre los años noventa, cuando había una política comercial discrecional, y los años posteriores a la

Gustavo Solórzano Andrade; Iván Rivadeneyra Camino; Luis Ángel Guamán Lazo



Educación y tecnología: conflictos y posibilidades  

Microsoft Academic Search

¿Cómo está dialogando la escuela con las nuevas formas de percibir y sentir el mundo, configuradas por una infinita red de sistemas y medios tecnológicos? El presente tra- bajo es un relato de una experiencia desarrollada por escuelas brasileñas y por la ONG Cipó «Comunicação Interativa», en un intento de buscar caminos para el conflicto ge- nerado por el sentimiento

Juliana Machado de Carvalho; Luciano Simões; Anna Penido


Perspectives on Official English. The Campaign for English as the Official Language of the USA.  

ERIC Educational Resources Information Center

Essays on the campaign to establish English as the United States' official language include: "Official Languages and Language Planning" (Richard Ruiz); "Una lingua, una patria?: Is Monolingualism Beneficial or Harmful to a Nation's Unity?" (David F. Marshall and Roseann D. Gonzalez); "Canadian Perspectives on Official English" (Joseph E. Magnet);…

Adams, Karen L., Ed.; Brink, Daniel T., Ed.



Microsoft Academic Search

En este documento se presenta una visión amplia de los problemas y del funcionamiento del sector educativo en Colombia, con énfasis en la educación pública. Con este fin, en primer lugar, se realiza una evaluación detallada de las normas sobre descentralización educativa, así como de aquellas que rigen la carrera docente en el país; también se evalúa el comportamiento reciente

Ana María Iregui; Ligia Melo B; Jorge Ramos F



Series históricas de capital público en España y su distribución territorial (1900-2005)  

Microsoft Academic Search

Acceder a la información estadística del estudio La Fundación BBVA y el Ivie publican estimaciones periódicas de las dotaciones de capital en España desde 1995. Continuando con este esfuerzo, el presente volumen ofrece una novedosa panorámica de la actividad inversora del sector público, al presentar por primera vez una visión de muy largo plazo, que amplía el horizonte temporal a

Mas Ivars Matilde; Cucarella Tormo Vicent



Microsoft Academic Search

Resumen El presente trabajo realiza una aproximación al uso de los recursos públicos destinados a la financiación de las Instituciones de Educación Superior desde la perspectiva de la eficiencia financiera. Describe una propuesta de modelo para la determinación de las aportaciones públicas a percibir por las Universidades públicas españolas diferenciando dos tramos de financiación: el destinado a cubrir los gastos




Procesos de integracion en el Magreb y Africa Subsahariana  

Microsoft Academic Search

Este trabajo es una primera aproximacion al proceso de integracion de la CEMAC y al comercio exterior del area. Una primera cuestion a resolver es el nivel educativo, el cual contribuye al desarrollo económico, pero el gasto publico en educacion en Africa es minimo, y en la mayor parte de los casos es muy dificil aumentarlo dados los bajos niveles

P. Exposito; I. Mohedano



Alianzas público privadas a favor de la primera infancia en el Perú: posibilidades y riesgos de su aplicación  

Microsoft Academic Search

Las alianzas público privadas (APP) son una modalidad relativamente reciente de trabajo por la cual se establecen convenios en los que ambas partes asumen compromisos y riesgos. Se han originado como una alternativa a la dicotomía entre oferta del sector privado y público, con miras a mejorar la efi ciencia y cobertura de servicios diversos. Si bien existen algunas experiencias

Gabriela Guerrero; Santiago Cueto; Claudia Sugimaru



The literary representation of certain Spanish castaways who lived among the North American Indians  

E-print Network

porque ilustra la diferencia fundamental entre dos filosofias de la conquista: Segun la perspectiva de Aguilar, veneer a los enemigos de Dios y del rey es una justificaci6n suficiente por una conquista, pero Cortes implica que veneer a los enemigos...

Protheroe, Mark Douglas



Universit degli Studi di BARI CdL nelle Professioni Sanitarie  

E-print Network

sviluppata fa da "scudo" ad altre più gravi, prevenendole. Come nel caso dell'anemia falciforme, una malaria. In che modo? Un portatore sano di anemia falciforme, ossia che possiede una sola copia del gene mutato che provoca la malattia, non solo non sviluppa l'anemia, ma è anche tre volte più resistente al

Malerba, Donato


Crecimiento económico y gobierno. El caso de México  

Microsoft Academic Search

Introducción. Existe una amplia gama de investigaciones teóricas y empíricas que han intentado verificar la influencia del sector público en la economía. A pesar de esto no hay todavía un concenso en este campo. Por ejemplo, Ram(1986) concluye que el tamaño del gobierno genera una influencia positiva en el desempeño económico y en el crecimeinto, mientras que Landau(1983) encuentra que

Emilio Barriga Delgado




Microsoft Academic Search

Resumen: este artículo analiza el problema de gestión de demandas de transporte en una fábrica automatizada de producción. El problema tratado está inspirado en una aplicación real en la industria de los semiconductores. La principal diferencia con respecto a trabajos precedentes en la literatura radica en la naturaleza unificada del sistema de transporte, con la cual es posible disminuir el

Jairo Rafael Montoya Torres