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Copyright of Cuadernos de Investigación Geográfica is the property of Universidad de la Rioja, Servicio de Publicaciones and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cuadernos de Investigación Geográfica is the property of Universidad de la Rioja, Servicio de Publicaciones and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Herbig Ae/Be objects are pre-main sequence stars surrounded by gas- and dust-rich circumstellar discs. These objects are in the throes of star and planet formation, and their characterisation informs us of the processes and outcomes of planet formation processes around intermediate mass stars. Here we analyse the spectral energy distributions of disc host stars observed by the Herschel open time key programme “Gas in Protoplanetary Systems”. We present Herschel/PACS far-infrared imaging observations of 22 Herbig Ae/Bes and 5 debris discs, combined with ancillary photometry spanning ultraviolet to sub-millimetre wavelengths. From these measurements we determine the diagnostics of disc evolution, along with the total excess, in three regimes spanning near-, mid-, and far-infrared wavelengths. Using appropriate statistical tests, these diagnostics are examined for correlations. We find that the far-infrared flux, where the disc becomes optically thin, is correlated with the millimetre flux, which provides a measure of the total dust mass. The ratio of far-infrared to sub-millimetre flux is found to be greater for targets with discs that are brighter at millimetre wavelengths and that have steeper sub-millimetre slopes. Furthermore, discs with flared geometry have, on average, larger excesses than flat geometry discs. Finally, we estimate the extents of these discs (or provide upper limits) from the observations. [ABSTRACT FROM AUTHOR]

This paper presents a new microencapsulation methodology for incorporation of functional ingredients in edible films. Core-shell microcapsules filled with demineralized water (C) or 1 % (w/v) peptide solution (Cp) were prepared using the microencapsulation printer technology. Shell material, composed of a stearic acid/carnauba wax mixture (75:25), represented around 10 % of the capsule weight, corresponding to a shell material/peptide ratio of 13.3:1 on dry basis. C capsules were more spherical and homogeneous than Cp ones. Cp's more irregular morphology would explain the slightly higher size of d (126 μm) compared to C (122.50 μm). Cp microcapsules were more stable at pH 5 and 7 (<30 % peptide released in 3 h) than at pH 2 and 9.2 (40-50 % released in 3 h). A procedure for homogeneous microencapsule inclusion in hydrophilic Laminaria digitata edible films was developed, without losing microcapsule integrity either in the filmogenic solution or during the drying process. Films with added microcapsules were stronger and more deformable, more opaque, more water-soluble but less permeable to water vapour and less resistant to perforation. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos de Investigación Geográfica is the property of Universidad de la Rioja, Servicio de Publicaciones and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Investigates the role of juvenile hormones (JH) in vitellogenesis in cockroaches. Effects of ovariectomy in Blattella germanica; Importance of mating in stimulating the production of JH in females lacking ovaries; Production of vitellogenin by the ovariectomised virgins of B. germanica; Reason for the high rates of production of vitellogenin in ovariectomized females.