Composição química da glândula abdominal da fêmea da mariposa Castnia licus (Drury) (Lepidoptera:Castniidae): possíveis feromônios e precursores

The hexane and methanolic extracts from pheromonal glands of Castnia licus (Drury) virgin females have been studied. Analyses by gas chromatography and mass spectrometry allowed us to determine the major constituents present in the hexane extract as n-alkanes C21 to C30, (Z)-9-hexadecenoic acid (C16), and (Z)-9-octadecenoic acid (C18) and hexadecanoic acid (C16). Aldehyds, alkenes and acetates were also detected in low concentrations in the extracts. Female pheromone glands were analysed for pheromone precursors using the methanolic extract. In addition to the compounds methyl hexadecanoate and methyl (Z)-9-octadecenoate, the glandular tissue contains a homologous series of methyl esters from C12 to C24. The hexane extract of the female abdomenal glands elicited activity from males in a behavioural bioassay.

L’obra de Guillaume de Machaut en el Manuscrit Mòdena, Biblioteca Estense, a.M.5.24

Entre finals del segle XIV i principis del XV es data la redacció del Manuscrit Mòdena, Biblioteca Estense, .M.5.24, un dels principals manuscrits del moment que han arribat als nostres dies, essent un element culminant pel que fa a penetració de l’art polifònic francès a la Itàlia d’inicis del ‘400. En ell es copien quatre peces de Guillaume de Machaut i l’únic poema de l’autor francès musicat per un altre compositor. En els treballs sobre el manuscrit molt sovint s’obvien aquestes quatre peces, i l’estudi sobre Machaut es fa quasi exclusivament des de les fonts franceses. Aquest treball pretén respondre, sobretot, a dues preguntes: Què ens poden explicar aquestes peces sobre el procés d’afrancesament de la música italiana? Què ens poden explicar sobre la difusió de l’obra de Machaut pel vell continent?

Centenario del Protectorado de Marruecos, Madrid: Instituto de Historia y Cultura Militar, 2012. Número Extraordinario II de la Revista de Historia Militar, LVI. 316 págs. [17 x 24].

Monografía publicada en la Revista de Historia Militar del Instituto de Historia y Cultura Militar con motivo del centenario de la creación del Protectorado español sobre Marruecos en 1912 y al que este instituto no podía quedar indiferente.

Romanssi, Op.24 nro.4

Soitinnus: Piano.

Barcarole, Op.24 nro.10

Soitinnus: Piano.

Hidrocarbonetos e esterois como indicadores de fontes e destino de matéria orgânica em sedimentos da Baía de Sepetiba, Rio de Janeiro

The inputs of organic matter derived from natural and anthropogenic sources to Sepetiba Bay were investigated by using aliphatic hydrocarbons and sterols in superficial sediments. Concentrations ranged from 0.26 to 2.65 μg g-1, <0.01 to 17.41 μg g-1 and 0.77 and 9.24 μg g-1 for n-alkanes, UCM (unresolved complex mixture) and total sterols, respectively. The selected markers and ratios among individual compounds showed the major contribution of terrestrial sources to the total pool of sedimentary organic matter in the bay, but the accumulation of autochthonous organic matter increased with distance from the shoreline. The input of petroleum hydrocarbons and sewage (coprostanol in the range 0.01 to 0.43 μg g-1) were also detected, especially in the more urbanized regions of the bay, but at lower levels of contamination when compared to estuaries in other Brazilian coastal regions.

De consilio divino, ex psalmo LXXIII: 24

Invocatio: Q.B.V.D.

Biheterocyclic ligands: synthesis, characterization and coordinating properties of bis(4-amino-5-mercapto-1,2,4-triazol-3-yl) alkanes with transition metal ions and their thermokinetic and biological studies

The Co(II), Ni(II) and Cu(II) metal ions complexes of Bis(4-amino-5-mercapto-1,2,4-triazol-3-yl) alkanes (BATs) have been prepared and characterized by elemental analysis, conductivity measurements infrared, magnetic susceptibility, the electronic spectral data and thermal studies. Based on spectral and magnetic results, the ligands are tetradentate coordinating through the N and S-atoms of BATs; six-coordinated octahedral or distorted octahedral and some times four-coordinated square planar were proposed for these complexes. Activation energies computed for the thermal decomposition steps were compared. The ligands and their metal complexes were tested in vitro for their biological effects. Their activities against two gram-positive, two gram-negative bacteria and two fungal species were found to vary from moderate to very strong.

Estimation of standard enthalpy of formation of alkanes in gaseous state by calculating size, structural and electronic parameters in the molecules

A quantitative analysis is made on the correlation ship of thermodynamic property, i.e., standard enthalpy of formation (ΔH fº) with Kier's molecular connectivity index(¹Xv),vander waal's volume (Vw) electrotopological state index (E) and refractotopological state index (R) in gaseous state of alkanes. The regression analysis reveals a significant linear correlation of standard enthalpy of formation (ΔH fº) with ¹Xv, Vw, E and R. The equations obtained by regression analysis may be used to estimate standard enthalpy of formation (ΔH fº) of alkanes in gaseous state.