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  • Chemistry  (4)
  • Compositae  (3)
  • Caves diameter  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 30 (1991), S. 2127-2130 
    ISSN: 0031-9422
    Keywords: Compositae ; Helianthus annuus ; high oleic mutant ; microsomes ; oleate desaturase ; seeds ; sunflower ; temperature control.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 28 (1989), S. 2593-2595 
    ISSN: 0031-9422
    Keywords: Compositae ; Helianthus annuus ; high oleic acid mutant. ; oleate desaturation ; sunflower, seeds
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Phytochemistry 28 (1989), S. 2597-2600 
    ISSN: 0031-9422
    Keywords: Compositae ; Helianthus annuus ; fatty acid composition ; high oleic acid mutant. ; lipids ; seeds ; sunflower
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 27 (1989), S. 44-49 
    ISSN: 0749-1581
    Keywords: γ-Butyrolactone ; 1H NMR analysis ; Conformational analysis ; Molecular mechanics ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 60 and 100 MHz 1H NMR spectra of γ-butyrolactone were analysed in detail. The best set of coupling values (Hz ± 0.03) is 3JABc = 7.86, 3JABt = 6.27, 3JBCc = 9.52, 3JBCt = 6.86, 4JACc + 4JACt = -0.18, 2JA - 2JB = 3.89 and 2JB - 2JC = 4.86 (A, B and C refer to α, β and γ protons, with respect to the ring oxygen, and c and t mean the same and opposite side of the ring, respectively). The 3J values support the conclusion that the molecule is interconverting between two equivalent conformations of near envelope type with the β-carbon out of the mean plane defined by the fragment C—O—CO—C.
    Additional Material: 3 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 31 (1993), S. 529-536 
    ISSN: 0749-1581
    Keywords: 2D NMR ; Spin-spin coupling ; Coordination-induced shift ; 1H—13C ; HETCOR ; ortho-Metalation ; Cyclometallation ; Polypyridyl ; 2,2′-Bipyridine ; π-Back-bonding ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Complete 1H and 13C NMR assignments and coordination-induced shift [CIS, δ(complex) - δ(free ligand)] calculations for carbon σ-bonded ortho-metalated rhodium(III) and iridium(III) complexes are described. NMR parameters are used as probes of van der Waals interactions and ring current anisotropy in the ligand's environmental framework and to monitor σ-donation and π-back-bonding within the ligand in this family of ortho-metalated complexes. CIS measurements indicate large charge redistribution within the ligands as a result of ortho-metalation to the rhodium(III) or iridium(III) cationic metal centers. The pulse sequences, attached proton test (APT), 1H—1H homonuclear correlation spectroscopy (COSY), single-frequency off-resonance decoupling (SFORD) and 1H—13C heteronuclear correlation spectroscopy (HETCOR), were utilized to assign all proton and carbon resonances of [Rh(ppy)2Cl]2, [Ir(ppy)2Cl]2, [Ir(ptpy)2Cl]2, [Ir(mppy)2Cl]2, [Rh(ppy)2bpy]+, [Ir(ppy)2bpy]+, [Ir(ptpy)2bpy]+ and [Ir(mppy)2bpy]+, where ppy is 2-phenylpyridine, ptpy is 2-(p-tolyl)pyridine, mppy is 3-methyl-2-phenylpyridine and bpy is 2,2′-bipyridine.
    Additional Material: 6 Ill.
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  • 8
    Publication Date: 2021-05-19
    Description: El cangrejo de tierra Cardisoma guanhumi, (Latreille, 1825) habita en el Parque Nacional Ciénaga de Zapata y constituye un recurso de importancia comercial. Se determinó la densidad media de la población de C. guanhumi en las zonas de captura Guamutal, El Maíz, La Arenera y Bolanio. Se utilizó un método de estimación indirecta y se muestrearon 11 parcelas de 81 m2 en febrero/2013 para un área total de 748 m2; además, se realizaron muestreos mensuales durante la temporada de captura (mayo, junio y julio del 2013). La densidad media de cuevas varió de 0,52 a 2,23 cuevas/m2, con una media de 1,43 cuevas/m2. La zona de mayor densidad fue La Arenera con 1,81 cuevas/m2 y la menor Bolanio con 0,52 cuevas/m2. El diámetro promedio de las cuevas fue de 10,13 ± 0,34 cm, 7,74 ± 0,56 cm y 5,59 ± 0,30 cm en El Maíz, La Arenera y Guamutal respectivamente. Se observaron diferencias significativas entre los diámetros medios. Los valores de menor diámetro en Guamutal refuerzan la hipótesis de que ésta constituye una zona de reclutamiento. La talla media del cangrejo disminuye a medida que trascurre la corrida. La captura posee un esquema de “Libre Acceso” y por ello se considera al cangrejo explotado intensamente, con disminución de la talla media de captura e incremento de ejemplares por debajo de la talla mínima legal. La presencia de cangrejos está asociada a los mangles Laguncularia racemosa y Conocarpus erectus. La fauna asociada a C. guanhumi la constituyen cangrejos ermitaños (Eupagurus sp.), cocodrilos (Crocodylus rhombifer) y perros jíbaros (Canis familiares).
    Description: At the National Park, Cienaga de Zapata inhabits the land crab (Cardisoma guanhumi, Lattreille, 1825) constituting a resource of commercial importance. To determinate the average density of the population in the catchment areas Guamutal, El Maiz and La Arenera, it was used an indirect method; it were sampled 11 locations with 81 m2 at febrary/2013 for a total area of 748 m2. Also there were done monthly samples to the capture during the capture season. The caves average density varied from 0,52 to 2,23 caves/m2, with an overall average of 1,43 caves/m2. The area most densely populated was La Arenera with 1,81 caves/m2 and the lower was Bolanio with 0,52 caves/m2. The average diameter of the caves was 10,3±0,34cm, 7,74±0,56cm and 5,59±0,30cm in El Maiz, La Arenera and Guamutal respectively. There is significant difference between the mean diameters. The presence of small diameters caves in Guamutal reinforces the hypothesis that this is the main area of recruitment. The crab average size decrease along the capture season. His capture has a “Free Access” scheme and crab is considered as intensely exploited. The percentage of specimens below the legal minimum size has been increased and therefor the average size has decreased. The crab presence is associated with gender mangrove, Laguncularia racemosa and Conocarpus erectus. In the fauna associated with C. guanhumi there were observed the hermit crabs (Eupagurus sp.), crocodiles (Crocodylus rhombifer) and wild dogs (Canis familiares).
    Description: Published
    Keywords: Cardisoma guanhumi ; Densidad de población ; Diámetro de cuevas ; Flora y fauna asociada ; Cuba ; Population density ; Caves diameter ; Flora y fauna associated
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.110-124
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  • 9
    Publication Date: 2021-05-19
    Description: El cangrejo de tierra Cardisoma guanhumi, (Latreille, 1825) habita en el Parque Nacional Ciénaga de Zapata y constituye un recurso de importancia comercial. Se determinó la densidad media de la población de C. guanhumi en las zonas de captura Guamutal, El Maíz, La Arenera y Bolanio. Se utilizó un método de estimación directa y se muestrearon 11 parcelas de 81 m2 en febrero/2013 para un área total de 748 m2; además, se realizaron muestreos mensuales durante la temporada de captura (mayo, junio y julio del 2013). La densidad media de cuevas varió de 0,52 a 2,23 cuevas/m2, con una media de 1,43 cuevas/m2. La zona de mayor densidad fue La Arenera con 1,81 cuevas/m2 y la menor Bolanio con 0,52 cuevas-m2. El diámetro promedio de las cuevas fue de 10,13 +- 0,34 cm, 7,74 +- 0,56 cm y 5,59 +- 0,30 cm en El Maíz, La Arenera y Guamutal respectivamente. Se observaron diferencias significativas entre los diámetros medios. Los valores de menor diámetro en Guamutal refuerzan la hipótesis de que esta constituye una zona de reclutamiento. La talla media del cangrejo disminuye a medida que transcurre la corrida. La captura posee un esquema de "Libre Acceso" y por ello se considera al cangrejo explotado intensamente, con disminución de la talla media de captura e incremento de ejemplares por debajo de la talla mínima legal. La presencia de cangrejos está sociada a los mangles Laguncularia racemosa y Conocarpus erectus. La fauna asociada a C. guanhumi la constituyen cangrejos ermitaños (Eupagurus sp.), cocodrilos (Crocodylus rhombifer) y perros jíbaros (Canis familiares).
    Description: At the National Park, Cienaga de Zapata inhabits the land crab (Cardisoma guanhumi, Latreille, 1825) constituting a resource of commercial importance. To determinate the average density of the population in the catchment areas Guamutal, El Maíz and La Arenera, it was used and indirect method; it were sampled 11 locations with 81 m². Also there were done monthly samples to the capture during the capture season. The caves average density varied from 0.52 to 2.23 caves/m², with an overall average of 1.43 caves/m². The area most densely populated was La Arenera with 1.81 caves/m² and the lower was Bolanio with 0.52 caves/m². The average diameter of the caves was 10,13 ± 0,34 cm, 7,74 ± 0,56 cm and 5,59 ± 0,30 cm in El Maíz, La Arenera and Guamutal respectively. There is significant differences between the mean diameters. The presence of small diameter caves in Guamutal reinforce the hypothesis that this is the main area of recruitment. The crab average size decreases along the capture season. His capture has a "Free Access" scheme and crab is considered as intensely exploited. The percentage of specimens below the legal minimum size has been increased and therefor the average size has decresead. The crabs presence is associated with gender mangroves, Laguncularia racemosa and Conocarpus erectus. In the fauna associated with C. guanhumi there were observed the hermit crabs (Eupagurus sp.), crocodiles (Crocodylus rhombifer) and wild dogs (Canis familiaris).
    Description: Published
    Keywords: Cardisoma guanhumi ; Densidad de población ; Diámetro de cuevas ; Flora y fauna asociada ; Population density ; Caves diameter ; Flora and fauna associated
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.110-124
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