1,602 research outputs found
L'attività di ricerca nella circoscrizione di Cefalù (Presentazione dell'attivtà di ricerca svolta dall'unità locale di PAlermo)
No full textL'attività di ricerca dell'unità locale di Palermo per la valutazione statistica del turismo sommerso è stata condotta, oltre che alle Isole Eolie, nella circoscrizione turistica di Cefalù. Agli obiettivi di ricerca fissati per le Isole Eolie ne sono stati aggiunti di nuovi, utilizzando dati tratti da fonti differenti, in alcuni casi derivanti da indagini organizzate ad hoc. I risultati dell'attività di ricerca su Cefalù sono presentati con dettaglio in un apposito volume di questa stessa collana. In questo contributo sarà presentata sinteticamente l'effettiva attività svolta, e data particolare attenzione alla logica che ha ispirato le opzioni di ricerca fondamentali
Prefazione al volume "Discutere la crisi: il ruolo del diritto nella sfida della ripartenza"
No full textConcentrazionaria, Musica
No full textIl termine si riferisce alla musica eseguita o composta nei ghetti e nei lager nazisti. Si tratta per lo più di brani corali o per voce a accompagnamento in varie lingue (tedesco, polacco, ceco, yiddish). Più rare, per comprensibili potivi, le composizioni per pianoforte o per orchestra. Il testo oggre uno sguardo d'insieme sulla questione e si articola in quattro paragrafi: 1. Musica nel ghetto di Varsavia; 2. La città "come se"; 3. Musica nei campi; 4. L'Orchestra femminile di BirkenauThe term refers to music performed or composed in the ghettos and Nazi concentration camps. It mainly consists of choral or vocal pieces in various languages (German, Polish, Czech, Yiddish) or works for small ensembles. Piano and orchestral works are rarer. The text provides an overview of the topic and is divided into four paragraphs: 1. Music in the Warsaw ghetto; 2. The 'as if' city; 3. Music in the camps; 4. The female orchestra of Birkena
A NANOSPHERICAL DENDRIMERIC GALLATE ESTER FOR LONG TERM PRESERVATION OF ESSENTIAL OILS: AN INTEGRATED CHEMOMETRIC ASSISTED FT-IR STUDY
No full textEssential oils (EOs) are hydrophobic concentrated liquids from plants made of volatile chemical compounds. EOs are very popular in the food, cosmetic and pharmaceutical industry as aromas, fragrances and alternative therapeutic devices [1, 2]. EOs are susceptible to degradation reactions, especially of oxidative type, triggered by temperature, light and oxygen availability. A loss of quality and alterations of sensory and pharmacological properties may occur, causing the production of smelly or even harmful compounds, responsible for allergic reactions and skin irritation [3-5]. For preventing and delaying EOs’ spoilage, synthetic preservatives as 2,6-bis(1,1-dimetiletil)-4-metilphenol (BHT) or t-butil-4-hydrohyanisole (BHA) are commonly adopted; but, in addition to a limited efficiency due mainly to poor solubility in oils, they may cause health diseases [6]. Natural polyphenols as gallic acid (GA) are nowadays proposed as safer alternatives, but their efficiency is limited by their low compatibility with hydrophobic material again, or by the occurrence of probable side reactions with oils constituents. Recently, a hydrophobic and biodegradable GA-enriched dendrimer (GAD) (Fig. 1.a) characterised by a nanospherical morphology (Fig. 1.b) and endowed with a remarkable antioxidant activity was synthetized [7]. Further studies currently being completed, have shown that GAD, with respect to free GA, possesses also more efficient antibacterial properties against several antibiotics-resistant G+ strains, inhibits platelet aggregation and ROS accumulation thus representing an excellent alternative to conventional drugs to combat infections and thrombus formation [8]. In this study, based on integrated results obtained from the due investigations, GAD is advised also as an innovative and semi-synthetic preservative additive.
a)
b)
Figure 1. Intuitive representation of GA-enriched dendrimer (GAD) structure (a); SEM images of GAD spherical nanoparticles (b). Scale bars represent 300 nm.
In this regard, GAD proved a much more efficient preservative power than free GA and, unlike GA, it never acts as a pro-oxidant. Besides classic oxidation indexes, the desired information was obtained by FT-IR spectroscopy assisted by multivariate analysis (MVA). For further confirmation of the so obtained results, interpretations of FT-IR data by considering the area of some selected informative bands and iodometric titrations to determine the hydro peroxide value (PV) were also performed [9].
References
[1] Yamamoto S., SOFW J., 2008, 134, 8.
[2] Jiang Y., Wu N., Fu Y.-J., Wang W., Luo M., Zhao C.-J., Zu Y.-G., and Liu Y.-L., Environ. Toxicol. Pharmacol., 2011, 32, 63.
[3] Hagvall L., Skold M., Brared-Christensson J., Borje A., and Karlberg A.-T., Contact Dermatitis, 2008, 59, 143.
[4] Skold M., Hagvall L., and Karlberg A.-T., Contact Dermatitis, 2008, 58, 9.
[5] Brared-Christensson J., Matura M., Gruvberger B., Bruze M., and Karlberg A.-T., Contact Dermatitis, 2010, 62, 32.
[6] Hirose M., Takesada Y., Tanaka H., Tamano S., Kato T., and Shirai T., Carcinogenesis, 1998, 19, 207.
[7] Alfei S., Catena S., and Turrini F., Drug Deliv. Trans. Res., under review.
[8] Alfei S., Signorello M. A., Schito A., Catena S., and Turrini F., results not yet published
[9] Alfei S., Oliveri P., and Malegori C., New J. Chem., under review
Molecular characterization of skeletal regeneration in the brittle star amphiura filiformis
No full textEchinoderms are well known for their extensive regenerative abilities, but have been neglected in the field due to the lack of available molecular tools and resources [1]. Recently, developmental [2] and adult transcriptomes [3, 4] of the brittle star Amphiura filiformis have been sequenced, which opened up this species for molecular investigations of its rapid arm regeneration process. We use this brittle star as a model to understand the cellular and molecular aspects of skeletogenesis during adult arm regeneration and the potential role of the FGF signalling pathway in this process. Ultimately, we compare the molecular network driving regeneration of the skeleton to that underlying embryonic skeleton development [5].
Following a characterization of the anatomy and development of the skeleton during arm regeneration in A. filiformis [6], we established methods for spatio-temporal expression analysis [7] and pharmacological treatments to characterise genes involved in adult arm regeneration. We found that 18 embryonic skeletogenic mesoderm genes (transcription factors, signaling receptors and downstream differentiation genes) are also expressed in the dermal layer of the adult regenerating arm, where skeletal spicules form. FGF signalling perturbation using the SU5402 inhibitor interferes with skeleton formation during both embryonic development and adult regeneration of this brittle star. A large-scale comparison of genes affected by SU5402 in adult arm regeneration and during embryonic development revealed a conservation of network components downstream of FGF signalling between those two developmental modes.
Acknowledgements: We thank the staff at the Sven Lovén Centre for Marine Sciences in Kristineberg, especially Olga Ortega-Martinez and Sam Dupont, for assistance during animal and sample collection.
References:
1. Dupont S, Thorndyke M (2007) Bridging the regeneration gap: insights from echinoderm models. Nat Rev Genet 8:8–10
2. Delroisse J, Ortega-Martinez O, Dupont S, Mallefet J, Flammang P (2015) De novo transcriptome of the European brittle star Amphiura filiformis pluteus larvae. Mar Genomics. doi: 10.1016/j.margen.2015.05.014
3. Purushothaman S, Saxena S, Meghah V, Swamy CVB, Ortega-Martinez O, Dupont S, Idris M (2014) Transcriptomic and proteomic analyses of Amphiura filiformis arm tissue-undergoing regeneration. J Proteomics 1–12
4. Delroisse J, Mallefet J, Flammang P (2016) De Novo Adult Transcriptomes of Two European Brittle Stars: Spotlight on Opsin-Based Photoreception. PLoS One 11:e0152988
5. Dylus DV, Czarkwiani A, Stångberg J, Ortega-Martinez O, Dupont S, Oliveri P (2016) Large-scale gene expression study in the ophiuroid Amphiura filiformis provides insights into evolution of gene regulatory networks. Evodevo 7:2
6. Czarkwiani A, Ferrario C, Dylus D V., Sugni M, Oliveri P (2016) Skeletal regeneration in the brittle star Amphiura filiformis. Front Zool 13:18
7. Czarkwiani A, Dylus D V., Oliveri P (2013) Expression of skeletogenic genes during arm regeneration in the brittle star Amphiura filiformis. Gene Expr Patterns 13:464–47
Macrophiothrix oliveri Benham 1911
No full textMacrophiothrix oliveri (Benham, 1911) (Fig. 15) Ophiothrix oliveri Benham, 1911: 154 –156, figs. 14–17.—Clark, H.L., 1915: 276.—Clark, A.M., 1967: 647. Ophiothrix (Ophiothrix) oliveri.—Mortensen, 1924: 118–120, fig. 8. Macrophiothrix oliveri.—Hoggett, 1990: 192–194, figs. 3.22 e –i, 3.23 e –g. Material Examined. Bay of Islands. KAH0907/ 194, NIWA 77880 (1). TAN0906/ 2, NIWA 77863 (1). TAN0906/ 60, NIWA 55192 (86). TAN0906/ 81, NIWA 55440 (3). TAN0906/ 96, NIWA 77862 (1). TAN0906/ 99, NIWA 55683 (1). TAN0906/ 102, NIWA 55737 (1). TAN0906/ 170, NIWA 77861 (2). TAN0906/ 240, NIWA 57508 (20). East Coast North Island. TAN 1108 / 197, NIWA 77785 (3). TAN 1108 / 213, NIWA 77800 (3). TAN 1108 / 217, NIWA 77814 (2). TAN 1108 / 239, NIWA 77816 (1). TAN 1108 / 250, NIWA 75543 (1). TAN 1108 / 253, NIWA 75593 (2). TAN 1108 / 268, NIWA 77783 (30). TAN 1108 / 275, NIWA 77812 (3). Far North. TAN0906/ 159, NIWA 56591 (10). TAN 1105 / 60, NIWA 73395 (1). Three Kings Islands. TAN 1105 / 35, NIWA 77846 (8). TAN 1105 / 42, NIWA 77845 (2). TAN 1105 / 53, NIWA 73324 (2). TAN 1105 / 69, NIWA 77831 (18). TAN 1105 / 70, NIWA 77815 (2). Comparative Material. Macrophiothrix oliveri (Benham, 1911): Duncombe Bay, Norfolk Island, 29 ° 0´S, 167 ° 55´E, 15 m, 25 / 9 / 1976, MV F 96553 (1). NZOI/K 797, off L'Esperance Rock, 31 ° 20.82´S, 178 ° 49.2´W, 55 m, 19 / 7 / 1974, NIWA 79573 (20). NZOI/P 968, Raoul Island, Kermadec Chain, 29 ° 14.7´S, 177 ° 52.32´W, 10 m, 11 / 6 / 1980, NIWA 79568 (1). NZOI/T 260, off L'Esperance Rock, 31 ° 20.802´S, 178 ° 49.602´W, 68 m, 28 / 3 / 1982, NIWA 79564 (12). Diagnosis. Disc densely covered in glassy trifid-multifid spinelets, obscuring disc plates and radial shields. Distal edges of white radial shields visible beneath spinelets. Dorsal arm plates twice as wide as long, truncate fan shaped, light pinkish purple interspersed with a darker plate every 2–3 segments, all with variable white blotch on distal border. Ventral disc and arm surface creamy white. Six transparent arm spines, 3–4 arm segments, 4 th spine longest, reducing to less than a segment ventrally, with thorny edges. Description. See Mortensen (1924). Distribution. Kermadec and Norfolk Islands (1–157 m), northern New Zealand (37–205 m) Remarks. This species was transferred to Macrophiothrix by Hoggett (1990) in an unpublished PhD thesis. Examination of the specimens here confirms this decision; the dorsal arm plates are in general twice as wide as long, similar to other Macrophiothrix species. Within Macrophiothrix, Hoggett (1990) distinguished M. oliveri by the length of the fourth-sixth arm spines from the top which are the longest in the series. On other species, the second-third arm spines are longest. This species has a restricted distribution along the north-east coast of New Zealand and around a few islands to the north.Published as part of Mills, V. Sadie & O'Hara, Timothy D., 2013, Ophiuroids (Echinodermata; Ophiuroidea) of biogenic habitats on the continental shelf of New Zealand, pp. 401-444 in Zootaxa 3613 (5) on page 435, DOI: 10.11646/zootaxa.3613.5.1, http://zenodo.org/record/22270
Sus oliveri Linnaeus 1758
No full text11. Mindoro Warty Pig Sus oliveri French: Sanglier de Mindoro / German: Mindoro-Pustelschwein / Spanish: Jabali de Mindoro Taxonomy. Sus philippensis oliveri Groves, 1997, Mayapang, Rizal, Mindoro Occidental, Philippines. This species was recognized as a distinct subspecies of the Philippine Warty Pig (S. philippensis) in 1997, and four years later designated as a full species, owing to various distinct characteristics setting it aside from S. philippensis. Mindoro island is surrounded by deepwater channels, indicating that it has had no recent landbridge connection with any adjacent island in the Philippine Archipelago. It has thus been isolated and remained isolated during repeated Pleistocene sea-level changes for tens of thousands of years. Monotypic. Distribution. Mindoro I in the C Philippines. Descriptive notes. No body measurements are available for this species. Based on skull length measurements in three males specimens, S. oliveri appears to be similar in size to the Philippine Warty Pig, but readily distinguished from that species byits very elongated facial skeleton, which points more downward, especially anterior to the canines. The braincase is more elongated behind the zygomatic roots. The palate is also more elongated, but not to the extent seen in the Palawan Bearded Pig (S. ahoenobarbus). The only currently available skin of S. oliveri suggests that males have a black crown tuft mixed with straw-colored hairs. The preocular warts are well developed, and they have a straw-colored tuft on the lower jaw. A photo of an adult female recently taken by trophy hunters on Mindoro shows a well-developed, blackish-gray bristly mane that runs across the head and along the back. The coat is rather shaggy and blackish or blackish-gray all over. Unfortunately, the large ears, short snout, and absence of warts suggest that this might have been a feral or hybrid animal, which means that there is still no clear understanding of what a true Mindoro Warty Pig lookslike. Habitat. Very few direct observations of the species in the wild have been recorded, mostly during annual Tamaraw (Bubalus mindorensis) census exercises in Mounts Iglit-Baco National Park. The species’ habitat preference therefore remains mostly unclear. It presumably favors remaining stands of forests and thickets where it can find shelter and food. Breeding. Nothing is known. Activity patterns. Nothing is known. Food and Feeding. Nothing is known. Movements, Home range and Social organization. Nothing is known. Status and Conservation. Classified as Endangered on The IUCN Red List because its extent of occurrenceis less than 5000 km? and its area of occupancyis less than 500 km?. Even though accurate records are lacking, the distribution range of S. oliveri is likely to be severely fragmented. Surveys conducted in the late 1990s indicated that Mindoro Warty Pigs are now mostly confined to higher elevations in the central and northwestern mountain ranges. There is also a continuing decline in the extent and quality of its habitat, and in the number of mature individuals because of overhunting. Hybridization with free-ranging domestic pigs introduced and maintained by hinterland communities is an additional and likely serious threat. Bibliography. Groves (1997, 2001a, 2001b), Oliver (1995, 2008).Published as part of Don E. Wilson & Russell A. Mittermeier, 2011, Suidae, pp. 248-291 in Handbook of the Mammals of the World – Volume 2 Hoofed Mammals, Barcelona :Lynx Edicions on pages 284-285, DOI: 10.5281/zenodo.572101
Ceradocus oliveri Appadoo & Myers 2006
No full textCeradocus oliveri Appadoo & Myers, 2006 Ceradocus oliveri Appadoo & Myers, 2006: 10, figs 7–9.— Krapp-Schickel & Vader, 2009: 2061 –2065 (key). Material examined. Queensland: 1 specimen, AM P.75609, outer reef, north of Third Lagoon, One Tree Island (23°29′05″S 152°04′07″E), 10 m, dead coral, Halimeda sp. and red algal tufts, 29 October 2006, coll. I. Takeuchi and J.K. Lowry (QLD 2003); 3 specimens, AM P.75608, Steve’s bommie, outer reef, near Two Trees Islet, One Tree Island (23°29′04″S 152°05′27″E), 13 m, coral rubble with epiphytes and solitary ascidians, 27 October 2006, coll. L.E. Hughes and J.K. Lowry (QLD 1978); 2 specimens, AM P.75703, Steve’s bommie, outer reef, near Two Trees Islet, One Tree Island (23°29′04″S 152°05′27″E), 13 m, red coralline algae with epiphytes, Dictyota sp. and Halimeda sp., 27 October 2006, coll. L.E. Hughes and J.K. Lowry (QLD 1977); 1 specimen, AM P.75607, northwest corner of Goodes Island, Torres Strait (10°33′35″S 142°09′09″E), 7.8 m, dead coral like Tubipora musica, 29 September 2006, coll. M. Capa and L.E. Hughes (QLD 1874); 1 specimen, AM P.75606, Northwest Islet, Torres Strait (10°18′55″S 142°05′26″E), 4.8 m, dead coral branches, 1 October 2006, coll. M. Capa and L.E. Hughes (QLD 1920). Type locality. Rodrigues Island, on reef crest among rhodolite samples (19°39.527′S 63°23.752′E). Remarks. Material reported here extends the distribution of C. oliveri from Rodrigues in the Indian Ocean to the Coral Sea, northern Queensland. Distribution. Indian Ocean: Rodrigues (Appadoo & Myers 2006). Australia. Queensland: Lizard Island, Torres Strait (current study).Published as part of Hughes, Lauren E., 2016, New genera, species and records of Maeridae from Australian Waters: Austromaera, Ceradocus, Glossomaera, Hamimaera, Huonella gen. nov., Linguimaera and Maeraceterus gen. nov. (Crustacea: Amphipoda), pp. 1-81 in Zootaxa 4115 (1) on page 16, DOI: 10.11646/zootaxa.4115.1.1, http://zenodo.org/record/25553
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