190,780 research outputs found
Simrothiellidae Salvini-Plawen 1978
No full textFamily SIMROTHIELLIDAE Salvini-Plawen, 1978 <p>DIAGNOSIS. — Solenogastres with biserial radula (rows of paired denticulate radula plates or bars), anterioventral radula sack (when present) paired; ventral foregut glandular organs variously configured, but not of the so-called type A (paired duct with subepithelially or exoepithelial-extraepithelially arranged glandular cells; Salvini-Plawen 1972, 1978); sclerites hollow-acicular or solid-elongate to scaly.</p>Published as part of <i>Salvini-Plawen, Luitfried von, 2008, Contributions to West European Cavibelonia (Mollusca, Solenogastres) with two new species, pp. 873-897 in Zoosystema 30 (4)</i> on page 874, DOI: <a href="http://zenodo.org/record/4525775">10.5281/zenodo.4525775</a>
Amphimeniidae Salvini-Plawen 1972
No full textFamily AMPHIMENIIDAE Salvini-Plawen, 1972 <p>DIAGNOSIS. — Solenogastres with thick mantle cuticle, sclerites acicular as hollow spicules (needles). Radula monoserial (or lacking); anterio-ventral radula sack (when present) unpaired. Foregut glandular organs typically as ramified ducts with terminally arranged clusters of gland cells (= type D). Spawning ducts with subepithelially arranged, intercellularly opening glands.</p>Published as part of <i>Salvini-Plawen, Luitfried von, 2008, Contributions to West European Cavibelonia (Mollusca, Solenogastres) with two new species, pp. 873-897 in Zoosystema 30 (4)</i> on page 889, DOI: <a href="http://zenodo.org/record/4525775">10.5281/zenodo.4525775</a>
Presentazione del volume di G. Passarelli e D. Tuorto "La Lega di Salvini, estrema destra di governo"
No full textDiscussione in occasione della presentazione del volume di G. Passarelli e D. Tuorto "la Lega di Salvini Estrema destra di govern
Preliminary Geodynamic Section of Central Italy between 41° and 42° N parallels
No full text""The Central Mediterranean region represents the zone where. the evolution of the Thetian collisional chain appears the most. complex (Bigi et al., 1991; Cavinato et al., 1994; Parotto et al.. 1996; Amato et al. 1997; Cassano et al., 2001; Cassinis at al,. 2003; Billi & Salvini, 2003). In the Central Italian peninsula the. chain is elongated roughly NW-SE and results from the Thetian. suture by the collision between a European and an African. microplate. The sector between the N 41° and N 42° parallels is. one of the most complicate tiles of this puzzle (Salvini, 1993).. Important geodynamic differentiations are present along both. sides (Favali et al, 1993; De Alteriis, 1995).. An ideal E-W transect, from W, locates four main. geodynamic blocks (Fig. 1). To the W is the Sardinia-Corsica. Block of European origin with relics of the sedimentary wedge of. his Thetian margin to the E (Bigi et al, 1991). It follows the. Tyrrhenian Sea, a basin characterized by thinned continental. crust topped with Miocene-Quaternary marine sediments directly. lying on Paleozoic basement (Patacca et al., 1990; Serri et al.,. 2001).. The third block corresponds to the Italian Peninsula with its. Apenninic structures that constitutes the orogen of the chain. (Accordi & Carbone, 1988; Parotto & Praturlon, 2004). The. accretionary prism continues to the E offshore, and it is still. active, in the Adriatic Sea (Patacca & Scandone, 2004). This is. the last block and represents the African margin underthrust to. the chain and it is characterized by a meso-cenozoic carbonate. succession deposited in shallow to open seawaters.. The main accepted geodynamic interpretation states that the. Sardinia block represents a European microplates separated in. Oligocene times (about 38 Ma, Patacca et al., 2008 and ref.. therein). The Apennines is the accretionary prism formed from. the collision in Mio-Pliocene times of the collision between this. microplate and the sedimentary wedge of the Adriatic plate of the. African domain (Adriatic Sea). Many geological evidences still. wait to be properly framed:. i) the substantial lack of the European sedimentary wedge in. the reconstruction of the collision zone;. ii) slices of deep water sedimentary successions associated. with ophiolites, related to the suture zone, outcrop both to the N. and to the S (Southern Apennines);. iii) along the proposed section slices of deep water sediments. has been identified in front of both the westernmost and the. easternmost sides of the chain;. iv) carbonate facies in the Apennines shows in Mesozoic. times deeper waters conditions in the most eastern successions. that is towards the African microplate (Accordi & Carbone,. 1988);. v) in eastern Sardinia a Mesozoic succession of shallow water. limestone outcrop (Tacchi), belongs to the European sedimentary. wedge (Bigi et al., 1991), and shows strong analogies with the. westernmost portions of the Apennine carbonate platforms. (comp. Accordi & Carbone, 1988).. A preliminary, admissible balanced cross sections between. the 41°N and the 42° N parallel has been prepared at the regional. scale by using the layered-HCA method as implemented in the. numerical FORC software (Salvini et al, 2001; Salvini F. &. Storti F., 2004). This section has been compared to the computed. lithosphere flexure of the region as derived from the present. topographic profile.. Results provide the possible framing of the Apennine block. within the African vs European domains, and the location of their. suture zone. Found geometry may represent the basis for a. complete geodynamic study of this complex region."
Geodynamic constraints of the peri-Tyrrhenian orogen (Tyrrhenian Sea-Apennines) from lineament swarm analysis
No full text""\\"Regional geodynamics is responsible of a series of effects. that notably include tectonics and seismicity. They in turn control. the morphology of the surface of the planet. The regional. dimension of the peri-Tyrrhenian orogen reveals that its. evolution is deeply involved in a lithospheric scale dynamics. As. a result, we expect different observable and\\\\\\\/or measurable effects. at the various scales from the outcrop evidences to the subcontinental. deformation corridors. Effects at the various scales. not necessarily are directly related, and their relations should be. carefully understood taking into account both their geometry and. spatial distribution. A classical example is represented by an en. echelon system. Each single fracture is the effect of a local. extension, yet their spatial distribution shows that these local. stresses are the effect of a larger scale shear zone with a different. orientation.. Remotely sensed images proved the existence on the Earth. surface of linear features with dimensions spanning over three. order of magnitude: from hundreds of meters to thousand of. kilometers. Such features are referred to image lineaments and. are generally related to alignment of morphological features in. continental environment such as onshore crests, ridges, valleys. and troughs. In the oceans lineaments relate to the scars. associated to the seafloor spreading and fracture zones. Synthetic. scale images of tectonically active regions revealed the existence. of groups of regional scale lineaments on the earth surface. appearing as image textural anisotropies. They clusters around. preferential orientations to form lineament domains. These. domains occupies well defined areas to form lineament swarms.. Lineament domain analysis on regional scale images of the. Earth surface proved a useful tool to investigate regions. characterized by active tectonics (Wise et al., 1985; Funiciello et. al., 1977; Cianfarra & Salvini, 2008).. Both the Tyrrhenian Sea and the Apennines are geodynamic. blocks within the collisional puzzle between Africa and Europe. in the Central Mediterranean area.. In this work we explore the possible relations between these. two blocks by lineaments analysis. The found lineament domains. were interpreted as reflecting the structural grain of these two. geodynamic regions. Lineament detection was done by using. original automatic methods. Domains were identified by. statistical analysis. This work analyses lineaments detectable by. simulating different directions of lighting condition on the. DEMs. This allowed to properly evaluate the influence of the. light condition changes in the lineaments produced by. morphological features. The comparison among the analyses. showed that the different lighting conditions induce rotations of. few degrees of the mean azimuth of each lineament domain. This. rotation relate to the result of two contrasting effects: tectonics,. that tends to enhance linear morphologies, and erosion that. progressively smoothes them. Lineament domains characterised. by small rotations relate to morphologies where the tectonic. processes prevail on the erosional ones. Lineament domains. therefore have rotations inversely proportional to their tectonic. activity.\\""
Falcidens ryokuyomaruae Saito & Salvini-Plawen 2014, sp. nov.
No full text<i>Falcidens ryokuyomaruae</i> sp. nov. <p>(Figures 6–7)</p> <i>Type locality</i> <p> Western Wakasa Bay, between Kanmuri-jima Island and Kyogasaki point, Tango Peninsula, southern Sea of Japan, 35°44.97 <i>′</i> N, 135°22.40 <i>′</i> E, 101–102 m.</p> <i>Type depository</i> <p>Department of Zoology, National Museum of Nature and Science, Tsukuba.</p> <i>Etymology</i> <p>This species is named after the research and training vessel Ryokuyo-maru of the Maizuru Fisheries Research Station, Kyoto University, which collected all the specimens examined in this paper.</p> <i>Material examined</i> <p> <i>Holotype.</i> NSMT-Mo 78608, ethanol preserved specimen, a part of sclerites and radula are mounted on slide glasses, body length 6.4 mm, 35°44.97 <i>′</i> N, 135°22.40 <i>′</i> E, 101–102 m, 2 September 2012. <i>Paratypes</i>. #1–3: NSMT-Mo 78609–78611, body length 4.6–7.0 mm, from type locality; #4–6: NSMT-Mo 78612–78614, body length 4.0– 4.5 mm, 35°39.20 <i>′</i> N, 135°21.47 <i>′</i> E, 69 m, 2 September 2010; #7: NSMT-Mo 78615, body length 7.1 mm, 35°34.59 <i>′</i> N, 135°20.32 <i>′</i> E, 51–52 m, 10 July 2012; #8: NSMT-Mo 78616, body length 4.8 mm, 35°45.03 <i>′</i> N, 135°20.21 <i>′</i> E, 95 m, 13 August</p> <p> 2012; #9–12: NSMT-Mo 78617–78620, body length 4.3–7.0 mm, 35°45.26 <i>′</i> N, 135° 20.48 <i>′</i> E, 98–99 m, 25 April 2013.</p> <i>Description of holotype</i> <p> Animal small, 6.4 mm long, anterior body stout, <i>c</i>. 0.9 mm in diameter in midgut region, posterior body slender, tail-like, <i>c</i>. 0.3 mm in prepallial region, terminating in tassel with long needle-like sclerites (Figure 6A). Boundary of foregut and midgut regions demarcated by groove. Pedal shield surrounding mouth located dorsally to centre.</p> <p> Dominant sclerites covering whole surface of midgut and midgut sac regions lanceolate with flared base, up to 135 µm long × 40 µm wide, curved towards body, bluntly pointed at tip, broadly keeled on midline (seen as dark axial band in Figure 7E, F), with one longitudinal groove on each side of median keel; grooves are bifurcated near the base (Figure 7E, F). Sclerites from foregut region to midgut sac region with or without basal notch. Sclerites of prepallial region similar to dominant sclerites, but less flared in basal portion (Figure 7G, I), occasionally parallel sided (Figure 7H). Sclerites of peribuccal region minute, elongate oval, flat, <i>c</i>. 40 µm long × 14 µm wide (Figure 7A, B). Sclerites in foregut region short, up to 120 µm long × 45 µm wide, slightly curved towards body, round at top, flared at base, with weak waist, keeled with one or two narrow grooves at both sides of keel (Figure 7C, D). Sclerites of posterior prepallial region rather broad, attaining 120 µm long × 35 µm wide, slightly concave on medial surface, pointed at tip, nearly parallel sided, with several fine grooves (Figure 7J). Posterior margin of pallial region with long needles slightly flared in the proximal half, up to 280 µm long × 16 µm wide (Figure 7K, L). Sclerites inside of posterior margin fine needles 80 µm long × 8 µm wide (Figure 7M).</p> <p> Radula of single pair of sclerotized sickle-shaped teeth, <i>c</i>. 40 µm long, with small triangular thickening in proximal half, socketed by symphysis to apical notch of basal plate (Figure 6D). Basal plate wedge-shaped, 190 µm long, 65 µm in frontal width, 35 µm in lateral width, sclerotized at distal one-third. Cuticular lateral supports about half length of entire radula apparatus, substructured into three lobes at each side. Slightly sclerotized cuticular lining (transverse bar: as shown in Salvini-Plawen 1975, figure 7A, hatched portion between tips of lateral supports) of the distal radular pit (Figure 6D, left).</p> <i>Additional description from paratypes</i> <p>Colour of living animals light brown with dark brownish maculation in anterior body, which is the colouration of the internal organs observable through the translucent body wall, dark brown in pedal shield (Figure 6B, C).</p> <i>Remarks</i> <p> This species shares with several other <i>Falcidens</i> species a slender, tail-like posterior body; these include <i>F. gutturosus</i> (Kowalevsky, 1901), <i>F. loveni</i> (Nierstrasz, 1902), <i>F. caudatus</i> (Heath, 1918), <i>F. hartmani</i> (Schwabl, 1961), <i>F</i>. <i>crossotus</i> Salvini- Plawen, 1968, <i>F. procerus</i> Salvini-Plawen, 1986, <i>F. targatus</i> Salvini-Plawen, 1986, <i>F. acutargatus</i> Salvini-Plawen, 1992, and <i>F. vasconiensis</i> Salvini-Plawen, 1996 (Schwabl 1961; Salvini-Plawen 1968, 1992, 1996). Only <i>F. loveni</i> from Indonesia, <i>F. hartmani</i> from off Southern California and <i>F. procerus</i> from the Peru– Chile trench inhabit Pacific waters, whereas the type species <i>F. crossotus</i> and the other representatives belong to the Atlantic fauna. With respect to the sclerites, <i>F. crossotus</i> from the Scandinavian coast and <i>F. gutturosus</i> from the Mediterranean Sea are similar to those of <i>F. ryokuyomaruae</i> by having lanceolate scales with flared base in the midbody (see Salvini-Plawen 1968, 1972, 1996). It differs, however, by geographical provenance, and by the pedal shield which surrounds the mouth opening, narrower sclerites with waist in the foregut region, and proportionally wider prepallial sclerites. In the North Pacific, only one species, <i>Falcidens salviniplaweni</i> (Ivanov, 1984), is known from the Peter the Great Bay, Sea of Japan. The present species is distinguishable from the latter by having the tail-like narrowed posterior body.</p>Published as part of <i>Saito, Hiroshi & Salvini-Plawen, Luitfried v., 2014, Four new species of the aplacophoran class Caudofoveata (Mollusca) from the southern Sea of Japan, pp. 2965-2983 in Journal of Natural History 48 (45 - 48)</i> on pages 2973-2976, DOI: 10.1080/00222933.2014.959577, <a href="http://zenodo.org/record/4607709">http://zenodo.org/record/4607709</a>
Correcting inertia sensors of a navigation systems in spite to perform a successfull neural network approach
No full textA challenging open question regards the combined use of low cost GPS systems together with low cost
Inertia navigation systems in vehicle navigation tools. Apart from the principle of working, The two systems
are characterized by di erent features. The rst provides (when suitably operating) optimal precision for
long distance and observation time, the second one is very e cient only within a short observation time as
being a ected by the so called random walking e ect. In many recent papers the NN have been used to
increase the accuracy of the Inertia Measurement Systems together with GPS signals. However, the direct
use of the cinematic variables in the network provided results whose reliability are restricted to limited
classes of events (or trip). A more interesting approach is the possibility to use Neural Network system to
try to increase the reliability of the inertia measurements while being able to foresee the origin of sensor
mistakes. In this paper attention is focused on the capability to get a successful training of a neural network.
As a matter of fact, the optimal choice of the input parameters of a NN is fundamental to achieve a general
training, that is to say not focused on a particular set of observations. The more these parameters are
directly connected to the physical source of errors, the more the network will be capable of a general (not
specialised) use
Scutopus schanderi Saito & Salvini-Plawen 2014, sp. nov.
No full text<i>Scutopus schanderi</i> sp. nov. <p>(Figures 2–3)</p> <i>Type locality</i> <p> Western Wakasa Bay, between Kanmuri-jima Island and Ine Port, Tango Peninsula, southern Sea of Japan, 35°39.20 <i>′</i> N, 135°21.47 <i>′</i> E, 69 m.</p> <i>Type depository</i> <p>Department of Zoology, National Museum of Nature and Science, Tsukuba.</p> <i>Etymology</i> <p>This species is named for the late Dr. Christoffer Schander (University of Bergen, Norway) who contributed much to increase our knowledge on aplacophoran molluscs.</p> <i>Material examined</i> <p> <i>Holotype.</i> NSMT-Mo 78588, ethanol preserved specimen, a part of sclerites and radula are mounted on slide glasses, body length 14.7 mm, 35°39.20 <i>′</i> N, 135° 21.47 <i>′</i> E, 69 m, 2 September 2010. <i>Paratypes</i>. #1: NSMT-Mo 78589, body length 12.0 mm, from type locality; #2–3: NSMT-Mo 78590–78591, body length 6.5– 10.8 mm, 35°45.11 <i>′</i> N, 135°20.43 <i>′</i> E, 96 m, 2 September 2010; #4–9: NSMT-Mo 78592–78597, body length 5.2–10.3 mm, 35°44.97 <i>′</i> N, 135°22.40 <i>′</i> E, 101–102 m, 2 September 2010; #10: NSMT-Mo 78598, body length 6.8 mm, 35°45.03 <i>′</i> N, 135° 20.21 <i>′</i> E, 95 m, 13 August 2012; #11–12: NSMT-Mo 78599–78600, body length 6.7– 9.0 mm, 35°45.20 <i>′</i> N, 135°20.20 <i>′</i> E, 96–98 m, 25 October 2012.</p> <i>Description of holotype</i> <p>Animal 14.7 mm long, slender, almost uniform in diameter along body; 0.7 mm in foregut or pharyngeal region (neck or prothorax), 0.75 mm in anterior midgut region (anterior trunk or metathorax), and 0.6 mm in prepallial region (Figure 2A). Boundary between foregut and midgut regions usually demarcated by groove and by transition of internal colouration to dark greenish colour in midgut. Anterior midgut and midgut sac region with distinct groove of midventral suture line. Pedal shield (buccal plate, oral shield) postoral, but flanking mouth opening laterally (Figure 2E).</p> <p>Dominant sclerites covering dorsal, lateral and large part of ventral surfaces of midgut region, midgut sac region, and prepallial region roughly oar-blade shaped, pointed at tip, thin, flat, weakly keeled on midline near tip, often with 1–2 longitudinal fine grooves on each side of median keel, up to 100 µm long × 40 µm wide in anterior midgut sac region (Figure 3H), gradually increasing in size posteriorly (Figure 3I), up to 138 µm long × 46 µm wide in prepallial region (Figure 3J). Sclerites of peribuccal region minute, oval, flat, 17–26 µm long × 11–12 µm wide (Figure 3A, B), elongating posteriorly and narrowing distally in more posterior sclerites. Sclerites in foregut region of two types: one similar to dominant sclerites, but with distinct waist, up to 80 µm long × 28 µm wide (Figure 3C, E), the other more slender, with width of base narrower than widest point of distal half (Figure 3D). Sclerites along midventral suture narrow in distal half, widening in proximal half, pointed at tip, keeled on midline near tip, measuring up to 115 µm long × 25 µm wide (Figure 3F). Similar but wider sclerites provided with lateral sides of those narrow sclerites (Figure 3G). Posterior margin of pallial region with narrow lanceolate sclerites that are broadly keeled in distal half, up to 165 µm long × 23 µm wide (Figure 3K). Small narrow lanceolate sclerites, up to 90 µm long × 14 µm wide (Figure 3L), inside pallial margin.</p> <p> Radula large, <i>c</i>. 680 µm long, distichous, arranged in eight transverse rows, heavily sclerotized except for posteriormost two pairs; each tooth gaff- or hookshaped, <i>c</i>. 280 µm long, with 16–18 small, pointed median denticles (Figure 2F, G).</p> <i>Additional description from paratypes</i> <p>Colour of living animals through translucent body wall dark green in midgut region and light brown with numerous yellowish green maculations in midgut sac area (Figure 2B). Brownish colour of sclerotized radula observable through body wall (Figure 2C, arrow). Greenish colouration faded out in preserved specimens (Figure 2A, D). Radula teeth less sclerotized in small specimen (Figure 2H, paratype #5).</p> <i>Remarks</i> <p> The genus <i>Scutopus</i> is considered to be the most conservative representative in the Caudofoveata because of a postoral pedal shield, ventral suture line of fusion of the mantle edges in most species, body wall musculature, distichous radula without any lateral cuticular apparatus, and, in males, the pallial mucous tracts. So far, only four species of the genus <i>Scutopus</i> are known from three areas: <i>S. ventrolineatus</i> Salvini- Plawen, 1968 and <i>S. robustus</i> Salvini-Plawen, 1970 from the Eastern Atlantic (Salvini-Plawen 1968, 1970); <i>S. megaradulatus</i> Salvini-Plawen, 1972 from the Caribbean Sea; and <i>S. chilensis</i> Salvini-Plawen, 1972 from off the East Pacific Chilean coast. The new species <i>Scutopus schanderi</i> most resembles <i>S. robustus</i> in possessing heavily sclerotized radula teeth with denticles up to the tip, but differs from the latter by having fewer radula denticles in adult individuals: 16–18 in <i>S. schanderi</i>, 20–22 (13–22) in <i>S. robustus</i>; other characters in contrast to the 8–12 mm long, more stoutish <i>S. robustus</i> are also the wider, subparallel-sided dominant sclerites, the presence of the midventral mantle suture and the slender body shape in <i>S. schanderi</i>.</p>Published as part of <i>Saito, Hiroshi & Salvini-Plawen, Luitfried v., 2014, Four new species of the aplacophoran class Caudofoveata (Mollusca) from the southern Sea of Japan, pp. 2965-2983 in Journal of Natural History 48 (45 - 48)</i> on pages 2967-2969, DOI: 10.1080/00222933.2014.959577, <a href="http://zenodo.org/record/4607709">http://zenodo.org/record/4607709</a>
Il testamento e la libreria di Sebastiano Salvini (1512)
No full textBiografia di Sebastiano Salvini, membro dell'Accademia Platonica fiorentina, insegnante e umanista morto nel 1512. Edizione e analisi del suo testamento, con cui dona la sua raccolta libraria (costituita da manoscritti e da stampati) al monastero di San Fedele di Poppi, affinché venga costituita una libreria pubblica
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