2,017,568 research outputs found
The effect of polystyrene sodium sulfonate grafting on polyethylene terephthalate artificial ligaments on in vitro mineralisation and in vivo bone tissue integration
No full textThis study investigates the impact of polystyrene sodium sulfonate (PolyNaSS) grafting onto the osseointegration of a polyethylene terephthalate artificial ligament (Ligament Advanced Reinforcement System, LARS ) used for Anterior Cruciate Ligament (ACL). The performance of grafted and non-grafted ligaments was assessed in vitro by culturing human osteoblasts under osteogenic induction and this demonstrated that the surface modification was capable of up-regulating the secretion of ALP and induced higher level of mineralisation as measured 6 weeks post-seeding by Micro-Computed Tomography. Grafted and non-grafted LARS were subsequently implanted in an ovine model for ACL reconstruction and the ligament-to-bone interface was evaluated by histology and biomechanical testings 3 and 12 months post-implantation. The grafted ligaments exhibited more frequent direct ligament-tobone contact and bone formation in the core of the ligament at the later time point than the nongrafted specimens, the grafting also significantly reduced thefibrous encapsulation of the ligament 12 months post-implantation. However, this improved osseo-integration was not translated into a significant increase in the biomechanical pull-out loads. These results provide evidences that PolyNaSS grafting improved the osseo-integration of the artificial ligament within the bone tunnels. This might positively influence the outcome of the surgical reconstructions, as higher ligament stability is believed to limit micro-movement and therefore permits earlier and enhanced healing.Programme ANR LIGAR
Hubera jenkinsii Chaowasku, Johnson, Ham & Chatrou, 2012, comb. nov.
No full text11. Hubera jenkinsii (Hook.f. & Thomson) Chaowasku, comb. nov. Basionym: Guatteria jenkinsii Hooker & Thomson (1855: 141). Homotypic synonym: Polyalthia jenkinsii (Hook.f. & Thomson) Hooker & Thomson (1872: 64). Distribution: ⎯Southeastern Asia (west of Wallace's Line).Published as part of Chaowasku, T, Johnson, DM, van der Ham, RWJM & Chatrou, LW, 2012, Characterization of Hubera (Annonaceae), a new genus segregated from Polyalthia and allied to Miliusa, pp. 33-56 in Phytotaxa 69 on page 4
Three new rarely collected or endangered species of Annonaceae from Venezuela
No full textThree new species of Annonaceae from Venezuela are described here: Cremastosperma venezuelanum Pirie, Klarobelia subglobosa Chatrou, and Pseudomalmea wingfieldii Chatrou. All three are represented by few collections (in comparison to those of other Neotropical species of Annonaceae). Klarobelia subglobosa and P. wingfieldii in particular are only known from a few individual specimens collected in areas vulnerable to habitat destruction. IUCN threat categories are assigned to these specie
FIGURE 1. Monanthotaxis paniculata. A. Flowering branch. B. Flower bud. C. Flower bud with 3 petals removed. D. Petal from outside. E. Petal from inside. F. Stamen from inside. G. Stamen lateral view. H. Stamen from outside. I. Stamen from top. J. Staminode. K. Ovary. L. Leaf uppserside. A–K from McPherson 16123 in A new species of Monanthotaxis from Gabon with a unique inflorescence type for Annonaceae
No full textFIGURE 1. Monanthotaxis paniculata. A. Flowering branch. B. Flower bud. C. Flower bud with 3 petals removed. D. Petal from outside. E. Petal from inside. F. Stamen from inside. G. Stamen lateral view. H. Stamen from outside. I. Stamen from top. J. Staminode. K. Ovary. L. Leaf uppserside. A–K from McPherson 16123; L from Reitsma 2870. Illustrator: Esmée Winkel.Published as part of Hoekstra, Paul H., Chatrou, Lars W. & Wieringa, Jan J., 2014, A new species of Monanthotaxis from Gabon with a unique inflorescence type for Annonaceae, pp. 106-112 in Phytotaxa 186 (2) on page 107, DOI: 10.11646/phytotaxa.186.2.5, http://zenodo.org/record/514698
Diktarnas furste, diktarnas narr? Bilden av Lars Forssell och hans författarskap
No full textAn analysis of the critical reception of the poetry of Swedish writer Lars Forssel
The Shape of Things to Come. An Interview with Lars Bernaerts
No full textIn this interview, Lars Bernaerts discusses narratology as a tool to analyze the form, functioning, and circulation of narrative, introduces his current research project on the novelistic cycle, and explains what we can learn from “narratological science fiction.
Molnskådaren Lars Järlestad
No full textTexten är ett förord till ett urval av Lars Järlestads lyriska produktion.</p
Reptricket. Förord till Lars Gustafsson: Mot noll
No full textIntroduction to a collection of philosophical essays by Swedish author Lars Gustafsson (b. 1936)
Two new rarely collected species of Annonaceae from the Peruvian Amazon
No full textWhile preparing a taxonomic revision of the Neotropical genus Klarobelia Chatrou (Annonaceae), two species new to science – Klarobelia icoja S.Lara &amp; Chatrou, sp. nov., and Malmea abscondita Chatrou &amp; Gees, sp. nov. – were discovered. Both species are known from only two collections, made in Amazonian Peru. We clarify their generic placement and taxonomic identity based on a comparison of morphological characters with previously described species and on molecular phylogenetic analysis of four plastid markers. The conservation status of both species is assessed following IUCN criteria, and line drawings and distribution map are provided
«Everything is intermedial». A Conversation with Lars Elleström
No full textLars Elleström needs no introduction to intermediality and comparative literature scholars. Massimo Fusillo and Mattia Petricola had a conversation with him just a few weeks before the publication of his new, major theoretical work. The conversation discusses the evolution of Elleström’s theory over the last decade, his formation and influences, Peirce’s semiotics, the history of intermediality, and the notion of media literacy
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