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Peracchius durantae Lima & Racca-Filho, 2005, sp.n.
No full textPeracchius durantae sp.n. PUPARIUM. Habitus (Figs. 1 A): Color light green to yellow in life. Elongate elliptical in shape, with concave reentrance in anterior margin and longitudinal moulting suture. Wax secretions absent. Puparium 2.26 mm long, 0.66 mm wide. Margin: irregularly crenulate (Fig. 1 B); thoracic and caudal tracheal pore areas differentiated from rest of margin (Figs. 2 B and C); anterior and posterior marginal setae needlelike. Dorsum. Submarginal area punctuated by sinuous lines (Fig. 1 B), not separated from dorsal disc. Longitudinal and transverse moulting sutures reaching margin. Cephalothoracic suture indistinct, promidthoracic and mesohindthoracic sutures short. Cephalothorax with prominent subdorsal, paired tubercles. Cephalic region with four pairs of setae: one stout anterior submarginal needlelike pair (longer than the others), and three pairs that are curved and capitate (Fig. 2 D). Three paired setae, curved and capitate, on thoracic region, two on the prothorax and one on the metathorax; mesothoracic paired setae absent. Abdominal segments distinct on median and submedian areas; each segment, except the eighth, with a pair of prominent tubercles on each side of median area; each of the eight abdominal segments, excepting the second, with a pair of setae between the submedian tubercles (Fig. 2 A). Vasiform orifice subcordate, with rounded teeth posteriorly, and a pair of short, acute, setae near anterior margin (Fig. 2 E). Operculum subcordate, filling about twothirds of orifice and obscuring the lingula. Caudal ridges present, with no ornamentation, weakly defining a caudal furrow. Disc porettes scattered over dorsum. FIGURE 2. Peracchius durantae sp. n. A—submedian tubercles and capitate setae; B—tracheal thoracic fold (ventral) and pore; C—caudal fold (ventral); D—curved and capitate dorsal disc seta; E—vasiform orifice, showing ventral abdominal spiracles posterior to dorsal 8 th abdominal setae (All scale 1.0 mm except D scale 0.1 mm). Ven te r. Antennae situaded mesal to fore legs. Legs smooth, adhesive pads evident, basal microsetae not discernible (Fig. 1 C). Legs not contiguous. Thoracic and caudal tracheal fold discernible, ornamented with rounded tubercles (Figs. 2 B, 2 C). Marginal thoracic tracheal pores typical Cshaped (Fig. 2 B). Adult: Unknown. Holotype pupal case: Brazil, Rio de Janeiro: Seropédica, 11.v. 2005, A.F. Lima col., on Duranta repens var. Aurea (Verbenaceae), on slide, CECL 12.485. Paratypes: Brazil. All collected from Duranta repens (Verbenaceae). Tocantins: São Salvador, 2 pupal cases, 12.viii. 2004, R. Gredilha col., CECL 12.491; Espírito Santo: Linhares, 6 pupal cases, viii. 2004, P.C. Grossi col., CECL 12.492 and Rio de Janeiro: Seropédica, 4 pupal cases, 31.vii. 2003, A.F. Lima col., CECL 12.486, 3 pupal cases, 16.x. 2003, A.F. Lima col., CECL 12.487; Niterói, 1 pupal case, 26.iv. 2004, F.B. Pitombo col., CECL 12.488; Miguel Pereira, 2 pupal cases, 19.viii. 2003, F. Racca Filho col., CECL 12489, 2 pupal cases, 31.viii. 2003, F. Racca Filho col., CECL 12.490. Host plants: Verbenaceae: Duranta repens Linnaeus var. aurea. Distribution: Brazil, Belize (see discussion). Etymology. The specific epithet refers to the host plant, Duranta repens, on which the species has been found in Brazil. Discussion. Peracchius durantae is unlike any other previously described whitefly, as defined in the generic and species descriptions, above. The distribution of this species will be modified by additional collecting in view of the wide distribution of the host plant in the Brazilian territory, and specimens of P. durantae have also been collected from an unknown host in Belize. Moreover, unidentified material from other countries in Central America and the Caribbean appears to belong to this new genus (J. Martin, personal communication; material in Natural History Museum, London, UK).Published as part of Lima, A. F. & Racca-Filho, F., 2005, Peracchius durantae, a new genus and species of whitefly (Hemiptera: Aleyrodidae) from Brazil, pp. 39-43 in Zootaxa 1045 on pages 40-43, DOI: 10.5281/zenodo.16988
Sclerostomus (Altitatiayus) trifurcatus Grossi & Racca-Filho, 2004, new species
No full text<i>Sclerostomus</i> (<i>Altitatiayus</i>) <i>trifurcatus</i>, new species <p> <b> Material examined. <i>Holotype</i>:</b> male, Brasil, MG, Passa Quatro, Serra Fina, Trilha da Boca do Lobo, 2800 m, 07­XI­1999, R. Koike col. Ex col. E. & P. Grossi deposited in Museu Nacional do Rio de Janeiro, Universidade Federal do Rio de Janeiro, Brazil.</p> <p> <b>Description.</b> Male: 16 mm in length, 6 mm wide. Body elongate­oval and convex (Fig. 1); glabrous and black dorso­ventrally. Head broad, rectangular, excavated in the middle from vertex to the frontal border; posterior lateral borders elevated, spherical in shape; frontal border sinuate; canthus with anterior concavity, covering less than half of the eyes; frons with a conspicuous tubercle. Antennae with the scape weakly arched and the pedicel small. (Specimen lacking the antennal clubs.) Mandibles fully upturned, trifurcate apically. Lower portion of the mandible with a flat tooth basally, presenting above a bifurcate apophysis. The basal tooth of mandible median and acute (Figs. 2 and 3). Labrum triangular with a small tooth laterally; labium granulose, convex and setose with marginal punctures anteriorly. Pronotum smooth, bordered all around, weakly convex; anterior border elevated towards the middle with a minute central dent. Protibiae sparsely setose with four teeth externally. Meso and metatibiae with one external spine at the middle. Elytra convex and finely punctured, with eight longitudinal striae, with coalescent punctures basally.</p> <p>Female: unknown.</p> <p> <b>Etymology.</b> The specific epithet refers to the trifurcate mandibles, which are unique in the genus and readily distinguish it from other species of <i>Sclerostomus</i>. <b>Discussion.</b> The new species can be easily distinguished from other <i>Sclerostomus</i> species by the apical trifurcate mandibles and by the presence of a conspicuous tubercle on the frons.</p>Published as part of <i>Grossi, P. C. & Racca-Filho, F., 2004, A new Brazilian stag beetle of the genus Sclerostomus Burmeister, 1847 (Insecta: Coleoptera: Lucanidae), pp. 1-4 in Zootaxa 575</i> on pages 1-4, DOI: <a href="http://zenodo.org/record/157255">10.5281/zenodo.157255</a>
P2y purinoceptors in normal NIH 3T3 and in NIH 3T3 overexpressing c-ras
No full textThe ability of purinergic agonists to induce Ca2+ responses has been tested in two lines of murine fibroblasts: normal NIH 3T3 fibroblasts and NIH 115.14, a clone expressing high levels [1] of the c-ras protooncogene. Both kinds of cells are responsive to ATP in the range 1 microM-1 mM; ADP and ATP gamma S are almost as potent as ATP, while AMP is unable to elicit a response. Ca2+ measurements performed in single cells by image analysis show great variability among cells but in each individual responding cell the Ca2+ rise occurs in an all-or-none fashion. The transient Ca2+ response does not depend on influx from the extracellular medium. Electrophysiological experiments reveal the activation of an outward current (at -50 mV) by ATP, probably due to Ca(2+)-activated K+ channels, confirming the absence of a substantial Ca2+ influx. Finally, stimulation by ATP produces a small but significant increase in the production of inositol phosphates. These results indicate that these cell lines possess purinergic receptors which are not integral membrane channels and which are coupled to InsP3 formation and may be therefore classified as P2Y
FIGURE 3 in A new Brazilian stag beetle of the genus Sclerostomus Burmeister, 1847 (Insecta: Coleoptera: Lucanidae)
No full textFIGURE 3. Sclerostomus (Altitatiayus) trifurcatus n. sp., right mandible, left view (scale 1 mm).Published as part of Grossi, P. C. & Racca-Filho, F., 2004, A new Brazilian stag beetle of the genus Sclerostomus Burmeister, 1847 (Insecta: Coleoptera: Lucanidae), pp. 1-4 in Zootaxa 575 on page 3, DOI: 10.5281/zenodo.15725
Routing with Deceptive Information
No full textRouting protocols based on the link-state paradigm notoriously suffer from the problem of stale information in highly dynamic traffic scenarios, leading to an overall loss in routing efficiency. Solutions are not easy to come by, since an increase in the frequency of link state advertisements is equally dangerous: route flapping (i.e., periodic route changes that force traffic to be routed through an alternately underloaded set of paths) is one of the main drawbacks. In this paper we propose a novel, yet simple link state mechanism that may deliberately advertise false link state information with the purpose of stabilizing the routing, while keeping a high network utilizatio
FIGURE 1 in Peracchius durantae, a new genus and species of whitefly (Hemiptera: Aleyrodidae) from Brazil
No full textFIGURE 1. Peracchius durantae sp. n. A—puparium; B—margin and dorsal submargin; C—Antenna and legs (A Scale: 0.5 mm; B and C scale: 1.0 mm).Published as part of Lima, A. F. & Racca-Filho, F., 2005, Peracchius durantae, a new genus and species of whitefly (Hemiptera: Aleyrodidae) from Brazil, pp. 39-43 in Zootaxa 1045 on page 41, DOI: 10.5281/zenodo.16988
Characterization of Ca2+ transients induced by intracellular photorelease of InsP3 in mouse ovarian oocytes.
No full textCa2+ transients (measured with Fluo-3) were induced in single mouse ovarian oocytes by photolytic liberation of InsP3. The time course of cytosolic Ca2+ changes induced in this way is composed of distinct phases: upstroke, fast decline, slow declining plateau and fast decline to rest level. All the phases reflect mainly intracellular redistributions of the ion and not influx, since they are not strongly dependent on external Ca2+ or on changes in transmembrane potential. Often sustained Ca2+ oscillations followed the first InsP3-induced Ca2+ transient. These persisted for several minutes in the absence of external Ca2+. The initial rate of Ca2+ rise and the delay between the InsP3 stimulus and Ca2+ upstroke are correlated with the amount of liberated InsP3. A second InsP3 stimulation, applied during the plateau, causes only small Ca2+ elevations, lacking the upstroke phase. A second, full sized, transient could be elicited only after a complete return to the basal level. Vanadate, applied intracellularly, appeared to inhibit the re-uptake phase into the stores, stabilizing the plateau level. The present observations suggest that in mouse oocytes the InsP3-sensitive stores provide only a small and graded Ca2+ release which may then act as a trigger for a more substantial Ca(2+)-induced Ca2+ release (CICR) process
Prevalence of aortic abdominal aneurysm (AAA) in a hypertensive out-patient population
No full textAim of this work is to evaluate the prevalence of aortic abdominal aneurysm in a population with high risk of hypertension attending our Hypertension Ambulatory, in comparison with a normotensive group of patients examined in our other Out-Patient departments.
PATIENTS AND METHODS: A group of 118 hypertensive patients, age ranging from 50 to 82 (mean, 69.09 years) were submitted to ultrasonic scan (US scan) of the abdominal aorta. Criteria for selection were age and diagnosis of essential arterial hypertension. A minority of patients had isolated systolic hypertension. Patients with border-line values not on drug therapy were excluded. A homogenous control group of 118 patients who had undergone US-scan for other indications was chosen, matched for sex and age.
An Ansaldo AU 590 B-Mode real time ultrasonograph with a 3.5 Megahertz probe was employed. The US-scan was accomplished by two radiologists unaware of the hypertensive condition of the patients.
RESULTS: Out of the 118 hypertensive patients AAA was found in 14 (11.86% of cases) and only in 3 (2.54%) control group patients. The difference was statistically significant. All patients with AAA were over 62-years of age, with marked difference between sexes: males being more affected than females. In 92% of cases AAA was not palpable and would have remained undetected.
CONCLUSIONS: The very high prevalence of AAA in over-sixty hypertensive males, added to the well known prognostic benefit of an early diagnosis, suggests that routine abdominal ultrasonography is worthwhile as a screening procedure in this subgroup of patients.
REFERENCES:
1. Frame et al. Ann Intern Med. 1993;119:411-416.
2. Ernst. N Engl J Med 1993;328:1167-72
Degenerazione capitalista e degenerazione socialista : insegnamenti sociali della economia contemporanea / Giorgio Sorel ; edizione originale italiana per cura e con prefazione di Vittorio Racca
No full textDegenerazione capitalista e degenerazione socialista : insegnamenti sociali della economia contemporanea / Giorgio Sorel ; edizione originale italiana per cura e con prefazione di Vittorio Racca
Milano ; Palermo ; Napoli : R. Sandron, 1907
XXXII, 398 p. ; 19 c
Digital Workflows for Cultural Tourism
No full textThe concept of resource management in relation to cultural heritage relies on the documentation and recording as its fundamental core. A consistent approach to document heritage sites is necessary for any conservation and monitoring actions as well as planning, design, communication and promotion project, because without baseline records, no direction can be taken.
This contribution focuses on exploring the role of digital revolution in heritage recording techniques and tools as well as data processing workflows and information visualization to support the conservation and stewardship of cultural heritage sites.
The case study of the Cultural Heritage site of Bagan, Myanmar, has been selected to illustrate how heritage documentation practices are approached from local, national, and international perspectives, and the results that can be obtained from each. The potential of this kind of digital records for cultural tourism promotion and management are then discussed
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