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  • Open Access

    ARTICLE

    An Investigation on the Visible Characteristics of Four Caesalpiniaceae Wood Species in Gabon

    Zhaoyang Yu1, Jinbo Hu1,2,*, Yuan Liu1,*, Shanshan Chang1, Ting Li2, Gonggang Liu1, Qiongtao Huang3, Jianying Yuan4

    Journal of Renewable Materials, Vol.10, No.5, pp. 1365-1379, 2022, DOI:10.32604/jrm.2022.018255

    Abstract Color, whiteness and glossiness of four caesalpiniaceae wood species were characterized by quantitative measurements and image analysis, i.e., which were respectively Berlinia bracteosa Benth., Monopetalanthus heitzii Pellegr., Distemonanthus benthamianus and Erythrophleum ivorense A. Chev. The color of four wood species was evaluated to be consistent by the CIELab and CIE1931 color system. The boards of B. bracteosa, M. heitzii and E. ivorense was divided into dark color. The wood color of B. bracteosa had the highest red to green hue, while the wood appearance of D. benthamianus had the brightest and yellowest color within the four wood species. The whiteness… More > Graphic Abstract

    An Investigation on the Visible Characteristics of Four Caesalpiniaceae Wood Species in Gabon

  • Open Access

    ARTICLE

    Physical, Anatomical, and Photochemical Analyses of Some Exotic Wood Species Submitted to Heat Treatment

    Alper Aytekin1,*, Hikmet Yazıcı2

    Journal of Renewable Materials, Vol.9, No.8, pp. 1485-1501, 2021, DOI:10.32604/jrm.2021.015768

    Abstract The objective of this study was to evaluate the effect of heat treatment on decorative properties including glossiness, color coordinates including lightness (L), blue-yellow (b*) and red-green (a*), hardness (shore-D) morphological characterization and thermal properties of some exotic wood species. Heat treatment of anigre (Aningeria altissima), cedrorana (Cedrelinga catenaeformis), cemara (Casuarina sumatrana) and coronilla (Scutia buxifolia) wood materials were performed in an oven with a programmable controller at 210°C for 3 h. The obtained samples were conditioned in a climate cabin and the decorative properties, morphological characterization with scanning electron microscopy (SEM) and thermal properties with thermogravimetric analyzer (TGA) of… More > Graphic Abstract

    Physical, Anatomical, and Photochemical Analyses of Some Exotic Wood Species Submitted to Heat Treatment

  • Open Access

    ABSTRACT

    Supplement. 3 Workshop: Biology of Ampullariidae Conchological variation in Pomacea canaliculata and other South American Ampullariidae (Caenogastropoda, Architaenioglossa)

    ALEJANDRA L. ESTEBENET, PABLO R. MARTÍN, SILVANA BURELA

    BIOCELL, Vol.30, Suppl.S, pp. 329-335, 2006

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Development beyond the gastrula stage and digestive organogenesis in the apple-snail Pomacea canaliculata (Architaenioglossa, Ampullariidae)

    E. KOCH1, B.C. WINIK2, A. CASTRO-VAZQUEZ1,3,*

    BIOCELL, Vol.33, No.1, pp. 49-65, 2009, DOI:10.32604/biocell.2009.33.049

    Abstract Development of Pomacea canaliculata from the gastrula stage until the first day after hatching is described. Trochophore embryos are developed after gastrulation, showing the prototroch as a crown of ciliated orange-brownish cells. However, no true veliger embryos are formed, since the prototroch does not fully develop into a velum. Afterward, the connection between the fore- and midgut is permeated and the midgut becomes full of the pink-reddish albumen, which is stored into a central archenteron’s lake, from where it is accumulated into the large cells forming the midgut wall (“giant cells”). Electron microscopy of giant cells in late embryos showed… More >

  • Open Access

    ARTICLE

    Evidence for maternal transmission of a putative endosymbiont in the digestive gland of Pomacea canaliculata (Architaenioglossa, Ampullariidae)

    EDUARDO KOCH1,2, ISRAEL A. VEGA1,3,4, ALFREDO CASTRO-VAZQUEZ1,3,4

    BIOCELL, Vol.41, No.2-3, pp. 59-62, 2017, DOI:10.32604/biocell.2017.41.059

    Abstract The digestive gland of the apple snail Pomacea canaliculata lodges two types of pigmented corpuscles (identified as C and K corpuscles) which has been proposed as endosymbiont/s. Both corpuscular types are always present in the digestive gland of adult snails, they are released into the tubuloacinar lumen and are later expelled in the feces. On their part, hatchlings lack any C or K corpuscles in the digestive gland as well as in their feces, whereas C corpuscles appear in both the gland and feces within one week after hatching. Hence, it is possible that the detritivorous hatchlings acquire the putative… More >

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