382 research outputs found
Caramuruacarus Bassini-Silva and Jacinavicius 2022, gen. nov.
No full textCaramuruacarus Bassini-Silva and Jacinavicius gen. nov. Type species. Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius sp. nov. Diagnosis. Larva. Palptarsus with five-branched setae and solenidion (ω) (Figure 2 (a,b)); odontus tetrafurcate (Figure 2 (a)); cheliceral blade with tricuspid cap and the dorsal side with row of teeth (Figure 2 (a)); eyes present, 2/2 (Figure 3); tracheae and stigma absent; prodorsal sclerite with nasus (Figures 3, 10 (a)); pair of flagelliform trichobothria (si) (Figure 3); se setae on prodorsal sclerite (Figures 3, 10 (a)); Fe legs I–III each entire (Figure 5); Cx I bisetose (Figure 5 (a)); Cx II and III each unisetose (Figure 5 (b,c)); pretarsus legs I–III each with claws and claw-like empodium without onychotriches (Figure 5); Ge I with two solenidia (σ) (Figure 5 (a)); Ge II with one solenidion (σ) (Figure 5 (b)); Ge III without solenidia (Figure 5 (c)); Ta I and II each with subterminal eupathidium (ζ) (Figure 5 (a,b)). Deutonymph and adult are unknown. Abbreviations: AW = distance between the bases of the ve setae; PW = distance between the bases of the se setae; SB = distance between the trichobothria (si) bases; ASB = distance from trichobothria (si) bases to extreme anterior margin of the prodorsal sclerite; PSB = distance from trichobothria (si) bases to extreme posterior margin of the prodorsal sclerite; SD = ASB + PSB; AP = distance between the bases of ve and se; ve = external vertical setae; se = external scapular setae; vi = internal vertical setae; si = internal scapular setae (trichobothria); 1a = anterior sternal setae inside the coxal field I; 3a = posterior sternal setae; DMIN = minimum length of dorsal opisthosomal setae; DMAX = maximum length of dorsal opisthosomal setae; VMIN = minimum length of ventral idiosomal setae; VMAX = maximum length of ventral idiosomal setae. Abbreviations: Cx I = length of coxal field I; Tr I = length of trochanter leg I; Fe I = length of femur leg I; Ge I = length of genu leg I; Ti I = length of tibia leg I; Ta I (L) = length of tarsus leg I; Ta I (W) = width of tarsus leg I; Cx II = length of coxal field II; Tr II = length of trochanter leg II; Fe II = length of femur leg II; Ge II = length of genu leg II; Ti II = length of tibia leg II; Ta II (L) = length of tarsus leg II; Ta II (W) = width of tarsus leg II. Abbreviations: Cx III = length of coxal field III; Tr III = length of trochanter leg III; Fe III = length of femur leg III; Ge III = length of genu leg III; Ti III = length of tibia leg III; Ta III (L) = length of tarsus leg III; Ta III (W) = width of tarsus leg III. Abbreviations: I = σ I, σ II, σ III = length of the solenidia on Genu I–III; Κ I, Κ II = length of microseta on Genu I, Tibia I and Genu II; φ’ I, φ” I = length of the solenidia on Tibia I; ω I = length of solenidion on Tarsus I; Ε I = length of famulus on Tarsus I; ζ’ I = length of dorsal eupathidium on Tarsus I; ζ I = length of subterminal eupathidium on Tarsus I; φ’ II, φ” II = length of the solenidia on Tibia II; ω II = length of solenidion on Tarsus II; Ε II = length of famulus on Tarsus II; ζ II = length of subterminal eupathidium on Tarsus II; φ III = length of the solenidia on Tibia III; ω III = length of solenidion on Tarsus III. Etymology. The new genus is named in honour of the epic poem ‘Caramuru’ that exalts Brazilian lands, combined with the word ‘acarus’, which means ‘mite’ in Latin. Gender masculine. Differential diagnosis. Caramuruacarus Bassini-Silva and Jacinavicius gen. nov. is similar to Akodonacarus Goff and Webb, 1989, Hannemania Oudemans, 1911, Leeuwenhoekia Oudemans, 1911, Mastalacarus Goff and Lukoschus, 1983, Morelacarus VercammenGrandjean, 1973 and Xenodontacarus Loomis and Goff, 1973 in having five-branched setae on the palptarsus. The new genus differs from Akodonacarus, Hannemania, Leeuwenhoekia, Morelacarus and Xenodontacarus by having only one side of the cheliceral blade with a row of teeth (Figure 1 (a)), and four-pronged odontus (Figure 2 (a)), while the other genera mentioned above differ by having dorsal and ventral rows of teeth and two or three prongs on the odontus. Furthermore, Caramuruacarus Bassini-Silva and Jacinavicius gen. nov. differs from Akodonacarus by the absence of dorsal eupathidium on Ta I and σ on Ge III – Figure 5 (a,b) (vs present); from Hannemania by having two σ on Ge I – Figure 5 (a) (vs multiples) and absence of σ on Ge III – Figure 5 (c) (vs multiples); from Leeuwenhoekia by the absence of the ζ on the palptarsus – Figure 2 (b) (vs present); from Mastalacarus by having two σ on Ge I – Figure 5 (a) (vs one σ), and the absence of σ on Ge III – Figure 5 (c) (vs present); from Morelacarus by having two σ on Ge I – Figure 5 (a) (vs one σ), and the presence of σ on Ge II – Figure 5 (b) (vs absent); and from Xenodontacarus by having the σ on Ge II – Figure 4 (b) (vs absent) and claws and claw-like empodium without onychotriches – Figure 5 (vs with onychotriches).Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29 - 32) on pages 1299-1301, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/715638
Caramuruacarus carnavalesca Bassini-Silva and Jacinavicius 2022, sp. nov.
No full textCaramuruacarus carnavalesca Bassini-Silva and Jacinavicius sp. nov. (Figures 2–5 and 10; Tables 1–4) Description. Larva (holotype). Gnathosoma – fPp = B/B/BNB/5Bω; odontus tetrafurcate; cheliceral blade with tricuspid cap and the ventral side with ventral row of large blunt of 8 to 10 teeth; gnathobase punctate, subcapitular (bs) and adoral (cs) setae branched (Figure 2 (a,b)). Idiosoma – eyes present, 2/2, set in ocular plate, anterior lens larger; prodorsal sclerite with sparse punctations (Figures 3, 10 (a)), anterior margin slightly sinuous with nasus, lateral and posterior margins concave; with pair of nude flagelliform trichobothria (si), and four slightly expanded setae [pair of ve (= AL) setae and pair of vi (= AM) setae] plus a pair of expanded and leaflike se (= PL) setae, with long and triangular setules; se > si > vi ≥ ve; tracheae and stigma absent; opisthosoma (Figure 4 (a,b)) with a total of 91 setae, dorsal opisthosoma with 46 setae, C row with 16 setae, D and E rows with eight setae each, F row with six setae and H row with eight setae irregularly placed, and 45 ventral opisthosomal setae (22 setae anterior to the anus and 23 posterior setae). Dorsal and lateral ventral opisthosomal setae expanded and modified, leaflike, like se setae (Figure 10 (b,c)); One pair of sternal setae (3a) between coxal fields III. Legs – femur of legs I–III not divided into basifemur and telofemur, each leg terminates with pair of claws and claw-like empodium without onychotriches, coxal fields punctate; Leg I – coxal field setae 1a and 1b branched (2B); trochanter 1B; femur 6B; genu 4B, 2 σ and Κ; tibia 8B, 2 φ and Κ; tarsus 23B with ω, ε, and subterminal eupathidium (ζ), base of famulus (ε) distal to solenidion (ω) (Figure 5 (a)). Leg II – coxal field seta 2b (1B); trochanter 1B; femur 5B; genu 4B, σ and Κ; tibia 6B, 2 φ; tarsus 16B with ω, ε and subterminal eupathidium (ζ), base of ε proximal to ω (Figure 5 (b)). Leg III – coxal field seta 3b (1B) in distal position; trochanter 1B; femur 4B; genu 4B, tibia 6B, φ; tarsus 15B (Figure 5 (c)). Type material Holotype. Larva, Cave CH-25, Santa Rita de Ouro Preto, Minas Gerais State, Brazil, (20.552° S, 43.514°W); 28–30 April 2009; on the soil; F. Pellegatti et al. coll.; deposited as IBSP 15693. Etymology. The specific name ‘carnavalesca’ (adjective related to Carnaval) refers to the extravagance of the dorsal opisthosomal setae, se setae and some ventral setae that recall the costumes of the Carnaval – a traditional Brazilian festival.Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29 - 32) on pages 1302-1304, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/715638
Mambo Italiano: the perilous Italian way to ISP liability
No full textThis chapter critically explores the current state-of-the-art in Italy regarding the liability of Internet service providers. It presents an overview of the three main phases which the author identifies in the case law of national courts. Particularly, the contribution looks at the implementation of the E-Commerce Directive into the Italian legal order and addresses some criticisms regarding the vagueness of some of the relevant domestic provisions. It also analyzes the significance attached to the case law of the Court of Justice of the European Union focusing on ISP liability, which has led some Italian courts to develop a new instrument with what I claim are no firm legal foundations: the so called ‘active’ hosting provider. The essay then draws up a map of the attitudes which ordinary courts afforded toward this interpretative option, most notably prior to the Supreme Court endorsement of the ‘active’ hosting provider avenue in a 2019 landmark judgment. Finally, I argue that such interpretation goes against legal certainty, leavening very unclear the conditions under which the legal regime enshrined in the E-Commerce Directive and national legislation is still applicable, ultimately undermining freedom of speech
Figure 7 in A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944
No full textFigure 7. Whartonia parauapebensis Bassini-Silva and Jacinavicius sp. nov.: prodorsal sclerite. Open circles = ornamentations of the prodorsal sclerite. Abbreviations: se = external scapular setae; si = internal scapular setae (trichobothria); ve = external vertical setae; vi = internal vertical setae. Scale bar: 20 μm.Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29-32) on page 1306, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/715638
Whartonia parauapebensis Bassini-Silva and Jacinavicius 2022, sp. nov.
No full textWhartonia parauapebensis Bassini-Silva and Jacinavicius sp. nov. (Figures 6–10; Tables 1–4) Diagnosis. Palpfemur and palpgenu each with single branched seta (Figure 6 (a)); dorsal and ventral setae branched and lateral setae nude on the palptibia (Figure 6 (a,b)); adoral (cs) setae branched (Figure 6 (a)); odontus multifurcate with the apex dividing into five or six prongs, plus two other larger supplementary prongs in the middle of the odontus (Figures 6 (a,b), 10(f)); nude flagelliform trichobothria (si) (Figures 7, 10 (d)); C and D rows with 12 irregularly placed setae each (Figure 8 (a)); E row with eight setae (Figure 8 (a)); F row with six setae (Figure 8 (a)); H row with four setae (Figure 8 (a)); total opisthosomal setae 42 including 48 to 50 ventral setae (Figure 8 (a,b)); base of famulus (ε) on Ta I and II proximal to solenidion (ω) (Figure 9 (a,b)). Description. Larva (holotype and one paratype). Gnathosoma – fPp = B/B/BNB/7Bωζ; odontus multifurcate with the apex dividing into five or six prongs, plus two other larger supplementary prongs in the middle of the odontus (Figure 10 (f)); cheliceral blade with ventral row of large blunt teeth and dorso-lateral row of small pointed teeth bordering the apical cap (more than 15 teeth each side); gnathobase punctate, subcapitular (bs) and adoral (cs) setae branched (Figure 6 (a,b)). Idiosoma – eyes present, 2/2, set in ocular plate, anterior lens larger; rectangular prodorsal sclerite sparsely punctate, punctuation mostly concentrated in the lateral regions (Figures 7, 10 (d)), anterior margin slightly sinuous with anterolateral shoulders, lateral margins slightly concave and posterior margin biconvex; with pair of nude flagelliform trichobothria (si), and six normal, branched setae [pair of ve (= AL) setae, pair of se (= PL) setae, and pair of vi (= AM) setae]; si > vi > se > ve; tracheae and stigma absent. Opisthosoma (Figure 8 (a,b)) with a total of 90 to 92 setae entire covered with setules, dorsal opisthosoma (Figure 10 (e)) with 42 setae, C and D rows with 12 irregularly placed setae, E row with eight setae, F row with six setae and H row with four setae, and 48 to 50 ventral opisthosomal setae (17 setae anterior to the anus and 31 to 33 posterior setae). One pair of sternal setae (3a) between coxal fields III. Legs – femur of legs I–III entire (not divided into basifemur and telofemur), each leg terminates in a pair of claws and claw-like empodium without onychotriches, coxal fields punctate; Leg I – coxal field setae 1a and 1b branched (2B); trochanter 1B; femur 6B; genu 4B, 2 σ and a long Κ; tibia 8B, 2 φ and a long Κ; tarsus 37B to 38B with ω, ε, dorsal eupathidium (ζ’) and subterminal eupathidium (ζ), base of famulus (ε) proximal to solenidion (ω) (Figure 9 (a)). Leg II – coxal field seta 2b (1B); trochanter 1B; femur 5B; genu 4B, σ and a long Κ; tibia 6B, 2 φ; tarsus 28B with ω, ε and a subterminal eupathidium (ζ), base of ε proximal to ω (Figure 9 (b)). Leg III – coxal field setae 3b and 3c (2B); trochanter 1B; femur 4B; genu 4B, σ, tibia 6B, φ; tarsus 26B to 28B with ω (Figure 9 (c)). Type material Holotype. Larva, Cave N 3-047, Parauapebas, Pará State, Brazil, (6.040°S, 50.227°W); 3–17 April 2013; on the cave soil; F. V. Freitas et al. coll.; deposited as IBSP14143. Paratype. One larva, same locality and date; deposited as IBSP14151. Etymology. The specific name ‘parauapebensis’ is in honour of the type locality – Parauapebas Municipality. Differential diagnosis. Whartonia parauapebensis sp. nov. is similar to Whartonia nudosetosa (Wharton, 1938) and Whartonia pachywhartoni Vercammen-Grandjean, 1966, as they share the following characteristics – absence of companion seta (z) on Ta I; Cx III bisetose; and presence of ω on Ta III. However, the new species differs from the other two species by having the following characters: lateral palptibial seta nude (Figure 6 (a)); and the odontus with two larger supplementary prongs in the middle (Figure 6 (a)). Furthermore, the new species has two pair of eyes set in ocular plates, while W. nudosetosa does not have an ocular plate. Also, Whartonia parauapebensis sp. nov. has fewer opisthosomal setae than W. pachywhartoni (90 to 92 setae vs 148 setae). The comparisons were made based on the original descriptions (Wharton 1938; Vercammen-Grandjean 1966) and redescriptions based on the types (Brennan and Dalmat 1960; Reed and Brennan 1975).Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29 - 32) on pages 1305-1309, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/715638
A new over-load recovery circuit for charge preamplifiers directly coupled to an ADC
No full textThis paper deals with a new add-on circuit structure that swiftly de-saturates a charge preamplifier for ionizing-radiation detectors when an energetic event occurs, or when a burst of piled up events puts it into saturation. The circuit is conceived for experiments where a spurious background of energetic particles and photons exists, such those with exotic beams in the new generation of European and USA nuclear-physics facilities
Wide-dynamic-range fast preamplifier for pulse shape analysis of signals from high-capacitance detectors
No full textA new hybrid charge-sensitive preamplifier with a sensitivity of 5 mV/MeV has been specifically designed to operate in conjunction with high-capacitance silicon detectors. The shape of the leading edge of its impulse response remains fast (20 ns) and unchanged over the full output voltage range (7 V), as is required in nuclear-physics experiments in which pulse-shape analysis is used for particle identification. The circuit is miniaturized onto two sides of a ceramic substrate as small as 17 x 23 mm2. A low-noise fast discharge technique is used: the return to the high-value feedback resistor (R F) comes from a noninverting low-gain (A) amplifier cascaded to the principal charge-amplifier loop. This yields a reduction of the fall time of a factor A, with no changes of CF and RF and no added noise. The shorter fall time reduces the pileup effects in presence of high event rates. Special care has been devoted to the matching between the high capacitance of the detector and that of the input stage of the preamplifier. To match a high capacitance, four BF862 field-effect transistors have been connected in parallel
Whartonia Ewing 1944
No full textGenus Whartonia Ewing, 1944 Type species Hannemania nudosetosa Wharton, 1938Published as part of Bassini-Silva, R., Zampaulo, R. A., Welbourn, C., Ochoa, R., Brescovit, A. D., Barros-Battesti, D. M. & Jacinavicius, F. C., 2022, A new genus and two new species of chigger mites (Trombidiformes: Leeuwenhoekiidae) from Brazilian caves with notes about the genus Whartonia Ewing, 1944, pp. 1297-1313 in Journal of Natural History 56 (29 - 32) on page 1305, DOI: 10.1080/00222933.2022.2118087, http://zenodo.org/record/715638
A Mixed Continuous-Pulsed Reset Technique for Digitized Preamplifiers of Radiation Signals
No full textWe have realized a mixed continuous-pulsed reset preamplifier suitable for multi-channel gamma-ray sensors. The continuous-reset mode is used for typical signal amplitudes within the ADC input range, or 1 V. The pulsed-reset mode works on larger signal amplitudes, either caused by individual events or by bursts of piled-up events. Such operation mode maximizes the live time in the typical energy range and minimizes the dead time caused by ADC saturation on large individual signals or at high count rates. The amplitude of large individual signals can also be estimated from the reset time still achieving a high resolution. Using this technique and a bulky High Purity Germanium detector we got a "continuous-reset" range of 2 MeV with a resolution of 2.02 keV fwhm at 1.408 MeV, and an extended "pulsed-reset" range of 27 MeV, with a typical resolution of 0.3% at 27 MeV
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