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Academic literature on the topic 'Hernandine'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Hernandine"

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TANOGUCHI, Mariko, Tatsuhiko KASHIMA, Hideyuki SAIKA, Taishi INOUE, Masao ARIMOTO, and Hideo YAMAGUCHI. "Studies on the constituents of the seeds of Hernandia ovigera L. VII. Syntheses of (.+-.)-hernolactone and (.+-.)-hernandin." CHEMICAL & PHARMACEUTICAL BULLETIN 37, no. 1 (1989): 68–72. http://dx.doi.org/10.1248/cpb.37.68.

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Guerrero-Hernandez, Agustin. "Ryanodine receptors in smooth muscle." Frontiers in Bioscience 7, no. 1-3 (2002): d1676. http://dx.doi.org/10.2741/hernande.

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Chen, Ih-Sheng, Jih-Jung Chen, and Ian-Lih Tsai. "Alkaloids from Hernandia sonora." Phytochemistry 40, no. 3 (October 1995): 983–86. http://dx.doi.org/10.1016/0031-9422(95)00280-k.

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Chen, Ih-Sheng, Jih-Jung Chen, Chang-Yih Duh, and Ian-Lih Tsai. "Cytotoxic lignans from formosan Hernandia nymphaeifolia." Phytochemistry 45, no. 5 (July 1997): 991–96. http://dx.doi.org/10.1016/s0031-9422(97)00064-2.

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Padoan, D., B. Chiancone, and M. A. Germanà. "OCCURRENCE OF SPONTANEOUS TRIPLOIDS FROM SMALL SEEDS OF 'HERNANDINA' CLEMENTINE." Acta Horticulturae, no. 892 (March 2011): 287–94. http://dx.doi.org/10.17660/actahortic.2011.892.34.

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ITO, Chihiro, Takuya MATSUI, Tian-Shung WU, and Hiroshi FURUKAWA. "Isolation of 6,7-Demethylenedesoxypodophyllotoxin from Hernandia ovigera." CHEMICAL & PHARMACEUTICAL BULLETIN 40, no. 5 (1992): 1318–21. http://dx.doi.org/10.1248/cpb.40.1318.

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Chen, Jih-Jung, Ya-Ling Chang, Che-Ming Teng, and Ih-Sheng Chen. "Vasorelaxing and Antioxidant Constituents from Hernandia nymphaeifolia." Planta Medica 67, no. 7 (October 2001): 593–98. http://dx.doi.org/10.1055/s-2001-17348.

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Jih-Jung Chen, Ian-Lih Tsai, Tsutomu Ishikawa, Chyl-Jia Wang, and Ih-Sheng Chen. "Alkaloids from trunk bark of Hernandia nymphaeifolia." Phytochemistry 42, no. 5 (July 1996): 1479–84. http://dx.doi.org/10.1016/0031-9422(96)00123-9.

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Beltrán, F., A. J. Perez-López, J. M. López-Nicolás, and A. A. Carbonell-Barrachina. "Effects of Mandarin Cultivar on Quality of Mandarin Juice." Food Science and Technology International 14, no. 4 (August 2008): 307–13. http://dx.doi.org/10.1177/1082013208097443.

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Eight mandarin cultivars have been analyzed for their content of vitamin C, minerals (Ca, Mg, K, Na, Fe, Cu, Mn, and Zn), CIELab color coordinates (L*, a*, b*, C*, and h ab), total volatile compounds content and sensory aroma intensity of juice. Experimental results proved that no important enough differences were found in the minerals contents to decide which mandarin cultivar was of higher quality. Clemenules provided the darkest juice with the highest vitamin C content and with the most intense mandarin aroma. On the other hand, Nova and Hernandina mandarin could be considered as the worst cultivars for juice production. Finally if Clemenules mandarins were not available for juice processing, Orogrande, Clemenpons, Ellendale, and Marisol could also be good options.

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Lafuente, MarÍa Teresa, José Luis Tadeo, and Juan José Tuset. "Gas Chromatographic Determination of Fenpropimorph Residues in Citrus Fruit." Journal of AOAC INTERNATIONAL 69, no. 5 (September 1, 1986): 859–62. http://dx.doi.org/10.1093/jaoac/69.5.859.

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Abstract A rapid gas chromatographic method for determining fenpropimorph residues in citrus fruit is reported. The fungicide is extracted with hexane after pH adjustment of the fruit homogenate. A short liquidliquid partitioning process is performed before gas chromatography on an OV-17 column with nitrogen-phosphorus specific detection. The limit of detection of the method was 0.01 mg/kg, based on a 25 g sample. Recovery was always higher than 70%. Fenpropimorph residues in "Washington Navel" oranges and "Hernandina" Clementine fruits dipped in a 1500 mg/L fungicide solution were determined. The fungicide remains mainly in the peel, with levels less than 0.1 mg/kg in the pulp. Fungicide residues in the peel decrease during storage, mainly in Washington Navel peel, where values decreased from 5.2 to 2.8 mg/kg.

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Dissertations / Theses on the topic "Hernandine"

1

Chalandre, Marie-Christine. "Contribution à l'étude des Hernandiacées : Acaloïdes de Hernandia mascarenensis (Meissn.) Kubitzki, Hernandia peltata Meissn., Gyrocarpus americanus americanus Jacq., Sparattanthelium uncigerum (Meissn.) Kubitzki." Angers, 1987. http://www.theses.fr/1987ANGE0503.

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Udino, Lyn. "Contribution à l'étude chimique et biologique de deux plantes tropicales : Canella winterana L. Gaertn et Hernandia sonora Linn." Toulouse 3, 1995. http://www.theses.fr/1995TOU30135.

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On effectue une etude chimique et biologique de deux plantes tropicales afin de relier leur connaissance chimique a leur utilisation traditionnelle. Canella winterana appartient a la famille des canellacees. Les feuilles de cette plante, tres peu etudiees jusqu'alors, sont utilisees aux antilles pour leur activite insecticide. En etudiant leur composition chimique, on identifie trois sesquiterpenes dialdehydes dont le canellal, trois derives aromatiques et un sucre. Les huiles essentielles des feuilles et des ecorces de tiges du vegetal sont extraites et analysees. On obtient trois huiles dont les composes majoritaires sont respectivement le myrcene, le 1,8-cineole, et la myristicine. A partir du canellal obtenu, on realise des modifications fonctionnelles, afin d'aborder la relation structure-activite insecticide de cette molecule. On obtient ainsi sept molecules nouvelles de la serie des drimanes sesquiterpenoides. Hernandia sonora, la seconde plante etudiee, n'a fait l'objet d'aucune investigation chimique a ce jour. C'est une espece de la famille des hernandiacees, reputee pour la richesse de ses plantes, en lignanes et en alcaloides. On etudie ici les graines de hernandia sonora, dont l'utilisation traditionnelle les destine a eliminer poux et tiques des bestiaux d'elevage. Ces graines fournissent une huile, huit lignanes dont la podophyllotoxine et des molecules apparentees, un alcaloide et un sterol. L'activite insecticide des extraits, produits purs, et huiles essentielles obtenus, est evaluee sur la fourmi acromyrmex octopinosus. L'activite acaricide de ces extraits et produits purs est mesuree sur la tique du betail amblyoma variegatum. On etudie aussi les activites bacteriostatique et fongistatique des huiles essentielles de canella winterana sur dix micro-organismes

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Ingert, Nicolas. "Contribution à l’étude des plantes endémiques de Polynésie française et analyse phytochimique de 4 [quatre] espèces : "Hernandia nukuhivensis, Wikstroemia coriacea, Wikstroemia raiateensis et Wikstroemia johnplewsii"." Polynésie française, 2011. http://www.theses.fr/2011POLF0003.

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Etant donné la faible connaissance chimique et pharmacologique des plantes vasculaires marquisiennes, un projet scientifique permettant leur inventaire, la mise à jour de leurs usages, ainsi que la détermination de leurcomposition chimique et de leur activité biologique a été mis en oeuvre, afin de déterminer l’effet del’endémisme sur la diversité pharmacochimique de métabolites secondaires. Le criblage des diverses espècesendémiques prélevées aux Marquises a permis d’identifier et de caractériser les ressources végétales marquisiennes à potentialité thérapeutique. Deux plantes d’intérêt biologique ont été retenues: Hernandianukuhivensis et Wikstroemia coriacea. Elles ont fait l’objet par la suite d’une étude plus approfondie de leur composition chimique. L’étude de H. Nukuhivensis a permis de montrer sa forte cytotoxicité à 1 μg/mL et d’isoler 2 alcaloïdes et 7 lignanes présentant des activités biologiques intéressantes. L’étude phylogéniqueassociée à une étude de la variabilité chimique des différents Wikstroemia présents en Polynésie française ont souligné la présence de 2 morphotypes (rampant et arbuste) sur le plateau du Temehani (Raiatea). Les résultats des études phylogéniques n’ont pu être corrélés avec ceux de la phytochimie pour les espèces de Wikstroemia de Polynésie orientale. L’analyse phytochimique de W. Coriacea, qui présente une activité anti-radicalaire (CI50 = 54 μg/mL), a permis l’isolement de 4 sesquiterpénoïdes dont un nouveau (acide oléodaphnoïque), 2 coumarines, 3 dérivés benzéniques dont un nouveau (2-hydroxy-1,5-diphénylpentan-1-one), un triterpénoïde et un lignane. L’analyse de W. Raiateensis a conduit à l’identification de 2 biflavonoïdes
The endemism effect on the chemodiversity of Marquesan vascular flora was investigated by multidisciplinary approach including ethnobotany, phytochemistry, phylogeny and biological activity. The endemic Marquesan species bioprospection allowed to identify and characterize plant resources showing therapeutic potential. Two plants having biological interest have been selected for phytochemical study: Hernandia nukuhivensis and Wikstroemia coriacea. The first species possesses a high cytotoxicity at 1 μg/mL level and is composed of alkaloids and lignanes identified by NMR. Phylogenetic and chemical variability survey of Wikstroemia genus from French Polynesia had underscored two morphotypes (rampant and shrub) in Temehani Plain (Raiatea). Phylogenetic results are not well correlated to phytochemical data. Wikstroemia coriacea extracts showed a significant free radical scavenging activity (IC50 = 54 μg/mL) and so we isolate and identify 4 sesquiterpenes (including 1 new compound: oleodaphnoic acid), 2 coumarins, 3 benzenoids (including 1 new compound: 2-hydroxy-1,5-diphénylpentan-1-one), 1 triterpenoid and 1 lignan. Analysis of W. Raiateensis species yielded isolation and characterization of two biflavonoids

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Primeau, Lynn. "Part A: Investigation of a newly identified plant Hernandia didymantha Donn, synthesis of phenethyl cinnamide Part B: Selective removal of ascaridol from the essential oil of Chenopodium ambrosioides var ambrosioides Part C: Synthesis of canophyllol analogues." Thesis, University of Ottawa (Canada), 2007. http://hdl.handle.net/10393/28245.

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Part A. A number of constituents isolated from the ethanol extracts of the leaves of the neotropical species Hernandia Didymantha Donn. These include series of ethyl esters of common C14, C16, and C18 saturated and unsaturated fatty acides. The presence of the ethyl ester of the CI7 fatty acid was indicated by GC-MS. The major non polar component was shown to be nerolidol, 4, an open chain sesquiterpene. Ethnobotanical reports indicate that this sesquiterpene can be used as a natural pesticide and as a transdermal carrier. It is also reported to have anti-malarial activity. The major more polar component was shown to be the tryptamine derivative phenethyl cinnamide, 1. The structure identification was based on comparison of literature data and a two step synthesis (80%) from cinnamic acid and tryptamine. Part B. Chenopodium ambrosioides has been known for centuries as an antifungal and vermifuge remedie. As an infusion, Chenopodium ambrosioides is safe and an effective treatment. The essential oil has been investigated as an organic insecticide by Codena Inc, (St Charles sur Richelieu, Quebec). Registration was initially rejected by the U.S. Environmental Protection Agency because of the known toxicity of one of the components, the monoterpene endoperoxide ascaridol, compound 26. The selective removal of ascaridol was achieved without affecting the other constituents present in the essential oil using either the reaction with zinc in acetic acid or Lindlar Catalyst poisoned with quinoline and hydrogen at room temperature under several atmospheres of pressure. In each case the reduction product is the diol 27. The treated oil still showed excellent insecticidal properties and was approved for use as an organic pesticide by the U.S. Environmental Protection Agency. Considerable efforts were made to optimize the zinc/acetic acid. Unfortunately the optimized procedure still required considerable excess amounts of both reagents. This procedure, although successful from a chemistry and safety point of view, was not economically viable. The second method using the poisoned Lindlar Catalyst and H2 a gave clean reduction of ascaridol without causing reduction of any of the many olefinic components present in the oil. We showed that the catalyst could be recycled at least five times without significant loss of activity. Finally to give a reduced essential oil free of any quinoline, we prepared catalyst in hexane and removed the excess quinoline by washing several times with hexanes. Metallic contaminants in the oil such as lead and palladium which are components of the Lindlar catalyst were effectively removed by stirring the final product with 1% silica gel followed by filtration. This method appears to be inexpensive and thus suitable for commercial production of the safe "Codena Oil". Part C. Literature reports have shown that ursolic acid, a triterpene acid has a positive effect on the elimination of biofilms without any damage to the bacteria function. Since ursolic acid and canophyllol are both pentacyclic triterpenes a series of analogues of canophyllol have been synthesized and characterized by 1H NMR, 13C NMR, MS and their melting points. These compounds in which we made relatively simple changes in the functionality at C-3 and C-28 of the canophyllol molecule, together with a variety of similar betulinic acid compounds are now available for testing as potential controls of biofilm formation. These test will be carried out by the research group of Dr. R. Sattar of the University of Ottawa, Faculty of Medicine. Canophyllol was obtained as the major triterpene component in the bark of Ruptilliocarpon caracolito collected in the Osa Penninsula, Costa Rica.

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Chen, Yen-Ting, and 陳彥廷. "Hernandonine Induces Nucleolar Stress in Human Cancer Cells." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/v8xmrg.

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Chao, Yu-Ying, and 趙玉英. "Effects of Lignans Isolated from Hernandia nymphaeifolia (Presl) Kubitzki on Ca2+ Signaling." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/02254754701347309700.

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博士
高雄醫學大學
藥學研究所
90
The effects of lignans, epi-yangambin, epi-magnolin, epi-aschantin, deoxypodophyllotoxin and yatein, isolated from the trunk bark of Hernandia nymphaeifolia (Presl) Kubitzki on Ca2+ mobilization were investigated. The increase of intracellular free Ca2+ levels ([Ca2+]i) in Madin-Darby canine kidney (MDCK) cells and the inhibition of Ca2+ movement induced by Ca2+-mobilizing agents were observed in human neutrophils. These agents also altered reactive oxygen species (ROS) generation, Ca2+ signaling pathways and estrogenic compounds-induced Ca2+ signaling on human neutrophils in multiple manners. The lignans (50-100 mM) inhibited the release of [Ca2+]i release induced by platelet-activating factor (PAF) (10 mM), leukotriene B4 (LTB4) (0.2 mM), and thapsigargin (1 mM) at different extents, but not altered the basal [Ca2+]i. All of these five lignans (50-100 mM) inhibited 39-89 % of PAF-induced Ca2+ influx; whereas only epi-aschantin inhibited 54-79% of LTB4 and thapsigargin-induced Ca2+ influx. These five lignans (50-100 mM) blocked the Ca2+ releases induced by 10 mM of 17b-estradiol and 5 mM tamoxifen, but not by 25 mM clomiphene. The supressing of Ca2+ influx also observed by 17b-estradiol in all the tested- lignans (50-100 mM). However, 100 mM of epi-aschantin was able to reduce tamoxifen-induced Ca2+ influx. These lignans induced the increases of [Ca2+]i in a dose-dependent manner ranging from 10 to 100 mM in MDCK cells. [Ca2+]i triggering Ca2+ influx by these five lignans. La3+ (50 mM) abolished the Ca2+ signals by 100 mM of epi-aschantin, epi-magnolin, epi-yangambin, and 20 mM of deoxypodophyllotoxin. However, 50 mM of yatein only inhibited this response by 60%. All five lignans (50-100 mM) inhibited 42-65% of thapsigargin-induced capacitative Ca2+ entry, and inhibited 23-61% of thapsigargin-induced intracellular Ca2+ release. Epi-yangambin (100 mM), epi-magnolin (100 mM), and epi-aschantin (100 mM) inhibited 8-38% of 10 mM ATP-induced Ca2+ release. Trypan blue exclusion revealed that incubation with deoxypodophyllotoxin or yatein (but not the other lignans) decreased cell viability in a concentration-dependent manner. All five lignans (25-200 mM) suppressed the ROS generation by 20 mM of N-formyl-methionyl-leucyl-phenylalanine (fMLP) and 1 mM of phorbol myristate acetate (PMA), but not by 0.1 mM of arachidonic acid. The lignans (50-100 mM) inhibited 0.1 mM of arachidonic acid-induced Ca2+ release , but not by 20 mM of fMLP-induced Ca2+ release. These lignans also inhibited fMLP- and arachidonic acid-induced Ca2+ influx.

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Hu, Ya-Yun, and 胡雅筠. "Studies on the Chemical Constituents and Biological Activites of Root Bark of Hernandia nymphaeifolia." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/nkks56.

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碩士
大仁科技大學
製藥科技研究所
104
Hernanadia nymphaeifolia (Presl) Kubitzki (Hernandiaceae) is an evergreen tree, distributed in the tropical island shores of the Indian and western Pacific Oceans. In our studies on the anti-inflammatory constituents of Formosan plants, many species have been screened for in vitro anti-inflammatory activity, and H. nymphaeifolia was found to be one of the active species. In our search for compounds with anti-inflammatory activities, a new aporphine, N-formylhernagine (1), a new phthalimide, 5,6-dihydroxy- N-methylphthalimide (2), and 15 known compounds (3–17) were isolated and identified from the root bark of H. nymphaeifolia. Fifteen known compounds include two aporphines, oxohernagine (3) and hernandonine (4), three lignans, dehydrodeoxypodophyllotoxin (5), dehydropodophy- llotoxin (6), and podophyllotoxin (7), an amide, N-trans-feruloyl- methoxytyramine (8), a fatty acid, oleic acid (9), and eight steroids, mixture of β-sitosterol (10) and stigmasterol (11), mixture of β-sitostenone (12) and stigmasta-4,22-dien-3-one (13), mixture of stigmast-4-en-3,6- dione (14) and stigmasta-4,22-dien-3,6-dione (15), and mixture of 6β-hydroxystigmast-4-en-3-one (16) and 6β-hydroxystigmasta-4,22-dien- 3-one (17). The structures of all isolates were determined through spectral analyses and comparison of their physical and spectral data with literatures. Among the isolated compounds, N-formylhernagine (1), 5,6- dihydroxy-N-methylphthalimide (2), oxohernagine (3), hernandonine (4), N-trans-feruloylmethoxytyramine (8), and oleic acid (9) exhibited inhibition (IC50 values ≤ 6.23 g/mL) of superoxide anion generation by human neutrophils in response to formyl-L-methionyl-L-leuckyl-L- phenylalanine/cytochalasin B (fMLP/CB). In addition, N-formylhernagine (1), 5,6-dihydroxy-N-methylphthalimide (2), oxohernagine (3), N-trans- feruloylmethoxytyramine (8), and oleic acid (9) inhibited fMLP/CB- induced elastase release with IC50 values ≤ 7.41 g/mL.

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Ye, Jin-Wang, and 葉錦旺. "Studies on the Chemical Constituents and Biological Activities from the Root Wood of Hernandia nymphaeifolia." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/50967180882182494515.

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碩士
大仁科技大學
製藥科技研究所
103
ABSTRACT Hernanadia nymphaeifolia (Presl) Kubitzki (Hernandiaceae) is an evergreen tree, distributed in the tropical island shores of the Indian and western Pacific Oceans. In our studies on the anti-inflammatory constituents of Formosan plants, many species have been screened for in vitro anti-inflammatory activity, and H. nymphaeifolia was found to be one of the active species. In our search for compounds with anti-inflammatory activities, a new aporphine, 3-hydroxyhernandonine (1), a new lignin, 4′-O-demethyl-7-O- methyldehydropodophyllotoxin (2), and 13 known compounds (3–15) have been isolated and identified from the root wood of H. nymphaeifolia. Thirteen known compounds include five aporphines, 2-O-methyl-7- oxolaetine (3), hernandonine (4), oxohernangerine (5), oxohernagine (6), and 7-oxonorisocorydine (7), three lignans, (–)-deoxypodophyllotoxin (8), dehydropodophyllotoxin (9), and (–)-yatein (10), a amide, N-trans- feruloylmethoxytyramine (11), and four steroids, mixture of -sitostenone (12) and stigmasta-4,22-dien-3-one (13) and mixture of 6-hydroxy- stigmast-4-en-3-one (14) and 6-hydroxystigmasta-4,22-dien-3-one (15). Among the known isolates, 2-O-methyl-7-oxolaetine (3) was first isolated from natural sources. The structures of all isolates were determined through spectral analyses and comparison of their physical and spectral data with literatures. Among the isolated compounds, 3-hydroxyhernandonine (1), 4′-O-demethyl-7-O-methyldehydropodophyllotoxin (2), hernandonine (4), oxohernangerine (5), and oxohernagine (6) exhibited inhibition (IC50 values ≤ 5.72 g/mL) of superoxide anion generation by human neutrophils in response to formyl-L-methionyl-L-leuckyl-L-phenyl- alanine/cytochalasin B (fMLP/CB). In addition, 3-hydroxyhernandonine (1), 4′-O-demethyl-7-O-methyldehydropodophyllotoxin (2), oxohernan- gerine (5), and oxohernagine (6) inhibited fMLP/CB-induced elastase release with IC50 values ≤ 5.40 g/mL.

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Books on the topic "Hernandine"

1

León, Francisco Ruiz de. Hernandia. Guadalajara, Jalisco, México: Editorial Rocinante, 1985.

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Sutoyo, Agus. Strategi dan pemikiran perpustakaan: Visi Hernandono. [Jakarta]: Sagung Seto, 2001.

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Belmonte, Santiago J. Polito. Las formas del Martín Fierro: La estrofa hernandiana. Bahía Blanca, Neuquén: Fondo Editorial Neuquino, 2003.

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Miguel Hernández de la A a la Z: Diccionario temático hernandiano. Madrid: Fragua, 2010.

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Miguel Hernández, el desafío de la escritura: El proceso de creación de la poesía hernandiana. Madrid: Visor Libros, 2013.

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Book chapters on the topic "Hernandine"

1

"Hernandine." In Natural Compounds, 452. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0560-3_848.

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"Hernandoline." In Natural Compounds, 453. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0560-3_849.

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"Hernandezine (Thalicsimine)." In Natural Compounds, 399. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0560-3_727.

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"Hernandezine N-Oxide." In Natural Compounds, 400. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0560-3_728.

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Gu, Jian-Qiao, and A. Douglas Kinghorn. "Bioactive Constituents of the Genus Hernandia." In Bioactive Natural Products (Part K), 559–602. Elsevier, 2005. http://dx.doi.org/10.1016/s1572-5995(05)80042-0.

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"UbuRoi, or Hernandi AU Over Again." In On Bohemia, edited by Roger Shattuck, 586–89. Routledge, 2017. http://dx.doi.org/10.4324/9781315125503-99.

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Arimoto, Masao, H. Yamaguchi, and S. Nishibe. "Structure Elucidation and Synthesis of the Lignans from the Seeds of Hernandia ovigera L." In Stereoselective Synthesis (Part K), 551–606. Elsevier, 1995. http://dx.doi.org/10.1016/s1572-5995(96)80034-2.

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"Poesía en la guerra: metamorfosis hernandiana de “Las manos”, un motivo literario de largo aliento." In Métodos de propaganda activa en la Guerra Civil española, 49–96. Vervuert Verlagsgesellschaft, 2015. http://dx.doi.org/10.31819/9783954878277-003.

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"VISIÓN DE HERNÁN CORTÉS COMO PERSONAJE HISTÓRICO Y PROTAGONISTA LITERARIO DE LA HERNANDIA, DEL NOVOHISPANO FRANCISCO RUIZ DE LEÓN." In Rebeldes y aventureros, 187–94. Vervuert Verlagsgesellschaft, 2008. http://dx.doi.org/10.31819/9783964560261-012.

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Conference papers on the topic "Hernandine"

1

Briede, Juan Carlos, Isabel Margarita Leal, and Cristhian Pérez. "El modelado físico del espacio de diseño concurrente como recurso didáctico para el análisis, exploración y mediación entre lo abstracto y concreto." In Systems & Design: Beyond Processes and Thinking. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/ifdp.2016.2566.

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Las metodologías de diseño de productos orientadas a potenciar la creatividad hacia la innovación presentan un punto de inflexión al momento de pasar de la etapa divergente de análisis a una convergente de síntesis que se presenta al momento de abordar el diseño conceptual. El modelo simplificado para abordar el diseño conceptual planteado Hernandis&Briede (2009) permite modelar el espacio del diseño del producto desde una perspectiva teórica para mapear e integrar los requerimientos y condicionantes para convertirse en una guía de referencia o diagrama que se representa visualmente para considerarlo al momento de configurar y caracterizar la propuesta de diseño conceptual. Es un ejercicio cognitivo que implica una alto grado de abstracción que muchas veces se deshecha por la complejidad y alto nivel teórico que es lejano a la aplicación real. En el diseño y desarrollo de productos abordado por el Taller de Diseño Centrado en el Usuario [DCU] de tercer año de la carrera de diseño industrial de la Universidad del Bío-Bío se ha aplicado la metodología sistémica como medio para guiar el proceso y la toma de decisiones en el modelado conceptual. En dicha ocasión se aplicó la secuencia metodológica de Hernandis&Briede (2009). A la hora de modelar el espacio de diseño, los alumnos no solo tuvieron que esquematizarlo en una lámina, sino que también maquetearlo tridimensionalmente. Este ejercicio permitió reforzar el proceso de análisis y evidenciar la tensión entre la representación teórica y la representación física gracias al tiempo de constructivo y a la representación de las cualidades geométricamente. Esto permitió a los alumnos entender tácitamente por un lado las implicancias de la desagregación geométrica de volumen, superficie y límite de contorno así como la referenciación física puede gatillar la exploración de alternativas como recurso mediador de los atributos teóricos y su resolución tangible en el plano del producto. Se constata que incluir esta etapa facilita el “modelado del espacio del diseño” así como la gestión e integración de variables y atributos del producto antes de generar la propuesta de diseño.DOI: http://dx.doi.org/10.4995/IFDP.2016.2566

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Esnal Angulo, Iñaki, and Bernabé Hernandis Ortuño. "Aplicación de un modelo sistémico para el diseño conceptual de un asistente abdomino-intestinal." In Systems & Design: Beyond Processes and Thinking. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/ifdp.2016.3767.

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El artículo describe una investigación mediante la aplicación de un modelo sistémico orientado al diseño conceptual de un producto, que actúa como asistente abdominointestinal, permitiendo reducir el estreñimiento crónico funcional en las personas, debido a la adopción de la postura de cuclillas en su uso, así como a la realización de ejercicios específicos de tonificación. Mediante la aplicación de un modelo sistémico de formulación por objetivos (Hernandis, 2003) se construyó un escenario estático en el cual se describieron los aspectos fundamentales de dicha problemática y se planteó una propuesta para el diseño conceptual de una solución. Un estudio cualitativo de diversas fuentes documentales así como un análisis exploratorio a través de diferentes técnicas de creatividad permitieron establecer los parámetros y las variables del sistema. Tras la identificación, las variables endógenas fueron clasificadas según su naturaleza en tres subsistemas: funcional, ergonómico y formal, lo que permitió su cuantificación y posterior valoración y verificación. Como resultado de la investigación se obtuvo un marco teórico en el cual se define un espacio geométrico tridimensional de diseño único donde generar un concepto de producto que cumple con los requerimientos de diseño y satisface los objetivos impuestos por el sistema. La recursividad de la metodología sistémica y su carácter iterativo realimentado permiten la emergencia de inferencias que desde un punto de vista creativo facilitan la identificación de los factores fundamentales de diseño, resultando una herramienta útil para la toma de decisiones en los procesos de diseño de producto.DOI: http://dx.doi.org/10.4995/IFDP.2016.3767

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Orozco Echeverri, Lina Marcela, Henry Sneyder Neira Liscano, and Nelida Yaneth Ramirez Triana. "Reciclaje de plásticos de consumo masivo. Caso comunidad de reciclaje Nashira." In Systems & Design: Beyond Processes and Thinking. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/ifdp.2016.3759.

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Desde sus orígenes los plásticos han revolucionado el mundo debido a su versatilidad frente a otros materiales, sin embargo, el volumen de material ha crecido ostensiblemente como se registra en los datos de Plastics (2015), donde se afirma que 311 millones de toneladas de plástico se han producido en el mundo en el año 2014. De otra parte, según el informe del Banco Internacional de Desarrollo (2011), el negocio del reciclaje en Latinoamérica, es en su mayoría informal, los recicladores desempeñan una labor ambiental importante siendo ellos quienes recolectan el 60.9% de los residuos reciclables (en Colombia), estos trabajadores obtienen una remuneración muy baja aun cuando manipulan materias primas con alto valor económico, siendo sus ingresos mensuales en promedio 22,14 USD es decir menos de un dólar diario, lo cual establece índices de pobreza absoluta y hace necesario intervenir con el fin de dignificar el trabajo y erradicar la pobreza extrema. (Programa de Naciones Unidas , 2015). Con estos elementos preliminares del volumen de materiales plásticos y el trabajo subvalorado de los recicladores, este proyecto propone reciclar plásticos desarrollando una extrusora que produzca la transformación del material plástico de consumo masivo desechado, en filamento para impresión 3D, -teniendo en cuenta la emergente masificación de las impresoras 3D FDM (Fused Deposition Material)- Este trabajo es desarrollado en conjunto con una comunidad de “reciclaje Nashira” en el Bolo San Isidro, corregimiento del Valle del Cauca - Colombia y plantea su desarrollo a través de metodologías de co-diseño incluyendo a la comunidad activamente en el proyecto (Sanders & Stappers, 2014), a su vez es necesario abordar los elementos claves de este proceso mediante estrategias sistémicas de desarrollo de producto (Hernandis, 2015), así a partir de este enfoque se define la configuración del objeto final con el diseño como medio transformador de aspectos intangibles como el conocimiento, asociado una dimensión sociocultural donde la interacción es dada siempre por la comunidad como actor principal.DOI: http://dx.doi.org/10.4995/IFDP.2016.3759

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Barreto Fernandes, Francisco António, and Bernabé Hernandis Ortuño. "Usability and User-Centered Design - User Evaluation Experience in Self-Checkout Technologies." In Systems & Design 2017. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/sd2017.2017.6634.

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The increasing advance of the new technologies applied in the retail market, make it common to sell products without the personal contact between seller and buyer, being the registration and payment of the products made in electronic equipment of self-checkout. The large-scale use of these devices forces the consumer to participate in the service process, which was previously done through interaction with the company's employees. The user of the self-checkout system thus performs all the steps of the purchase, from weighing the products, registering them and making the payment. This is seen as a partial employee, whose participation or performance in providing services can be used by the company to improve the quality of its operations (KELLEY, et al 1993). However this participation does not always satisfy the user, and may cause negative experiences related to usability failures. This article presents the results of the evaluation by the users of the self-checkout system. The data were collected in Portugal through a questionnaire to 400 users. The study analyzes the degree of satisfaction regarding the quality and usability of the system, the degree of motivation for its adoption, as well as the profile of the users. Analysis of the sample data reveals that users have basic or higher education and use new technologies very often. They also have a high domain of the system and an easy learning of its use. The reason for using self-checkout instead of the traditional checkout is mainly due to "queues at checkout with operator" and "at the small volume of products". In general, the sample reveals a high degree of satisfaction with the service and with quality, however, in comparative terms, self-checkout is not considered better than operator checkout. The evaluation of the interaction with the self-checkout was classified according to twenty-six attributes of the system. The analysis identifies five groups with similar characteristics, of which two have low scores. "Cancellation of registered articles", "search for articles without a bar code", "manual registration", "bagging area", "error messages", "weight sensor" and “invoice request "are seven critical attributes of the system. The results indicate that the usability analysis oriented to the self-checkout service can be determinant for the user-system interaction. The implications of empirical findings are discussed together with guidelines for future research.Keywords: Interaction Design, Self service, Self-checkout, User evaluation, UsabilityReferencias ABRAHÃO, J., et al (2013). Ergonomia e Usabilidade. 1ª Edição. São Paulo: Blucher. ALEXANDRE, J. W. C., et al (2013). Análise do número de categorias da escala de Likert aplicada à gestão pela qualidade total através da teoria da resposta ao item. In: XXIII Encontro Nacional de Engenharia de Produção, Ouro Preto. BOOTH, P. (2014). An Introduction to Human-Computer Interaction (Psychology Revivals). London Taylor and Francis. CASTRO, D., ATKINSON, R., EZELL, J., (2010). Embracing the Self-Service Economy, Information Technology and Innovation Foundation. Available at SSRN: http://dx.doi.org/10.2139/ssrn.1590982 CHANG, L.A. (1994). A psychometric evaluation of 4-point and 6-point Likert-type scale in relation to reliability and validity. Applied Psychological Measurement. v. 18, n. 2, p. 05-15. DABHOLKAR, P. A. (1996). Consumer Evaluations of New Technology-based Self-service Options: An Investigation of Alternative Models of Service Quality. International Journal of Research in Marketing, Vol. 13, pp. 29-51. DABHOLKAR, P. A., BAGOZZI, R. P. (2002). An Attitudinal Model of Technology-based Selfservice: Moderating Effects of Consumer Traits and Situational Factors. Journal of the Academy of Marketing Science, Vol. 30 (3), pp. 184-201. DABHOLKAR, P. A., BOBBITT, L. M. & LEE, E. (2003). Understanding Consumer Motivation and Behavior related to Self-scanning in Retailing. International Journal of Service Industry Management, Vol. 14 (1), pp. 59-95. DIX, A. et al (2004). Human-Computer Interaction. Third edition. Pearson/Prentice-Hall. New York. FERNANDES, F. et al, (2015). Do Ensaio à Investigação – Textos Breves Sobre a Investigação, Bernabé Hernandis, Carmen Lloret e Francisco Sanmartín (Editores), Oficina de Acción Internacional - Universidade Politécnica de Valência Edições ESAD.cr/IPL, Leiria. HELANDER, M., LANDAUER, T., PRABHU, P. (1997). Handbook of Human – Computer Interaction. North–Holland: Elsevier. KALLWEIT, K., SPREER, P. & TOPOROWSKI, W. (2014). Why do Customers use Self-service Information Technologies in Retail? The Mediating Effect of Perceived Service Quality. Journal of Retailing and Consumer Services, Vol. 21, pp. 268-276. KELLEY SW, HOFFMAN KD, DAVIS MA. (1993). A typology of retail failures and recoveries. J Retailing. 69(4):429 – 52.

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