510 research outputs found
Amicta chambiana Arnscheid & Rajaei & Sobczyk 2021, sp. nov.
No full textAmicta chambiana sp. nov. Figs 10, 24 Type material. Holotype: ♂, Tunesien, ca. 10 km W Kasserine, unterh. Chambi NP, 800 m, 10.x.2006, leg. J. Gelbrecht, T. Drechsel & D. Stadie (GU 124-2021 Sobczyk). Paratypes: 11 ♂, same data as holotype, 8 ♂, Tunesien, Prov. Kaserine, Wadi am Djebel Chambi, 850 m, 12 km südl. Kaserine 08. –11.x.2006, leg. D. Stadie, J. Gelbrecht & T. Drechsel (in coll. Stadie, Gelbrecht, Drechsel, CTS, CWA, SMNS). Diagnosis. ♂. Wingspan 21.0– 23.5 mm (average: 22.6 mm), forewing length 10.6–11.0 mm, width 5.4–6.0 mm (average 5.6 mm), FI 1.88–1.98 (average 1.94 mm). Head EI 0.72–0.77 (average 0.74). Antennae length 6.2–7.4 mm, 38–43 segments without pedicellus and scapus. The pecten very long, 1.4 mm. The longest pecten 10 times of segment diameter. Thorax and abdomen densely covered with long pale brown hairs. Forewings broad, costal margin almost straight, apex rounded, termen curved. All wings brownish, forewing costal margin darker, thinly scaled with hair-like scales (class 1–2 after Sauter & Hättenschwiler 1999), scales mostly with two dentations, partially with one or three dentations. Fringes lighter greyish brown, long, with 3 dentations, the middle of them mostly broader and larger. Abdomen densely covered with long pale brown hairs. Male genitalia. (GU 124-2021 Sobczyk): 2.1 mm length, elongated in general appearance, tegumen rounded distally, laterally bulging, covered with short hairs. Valvae long and clearly extended beyond the distal end of the tegumen. The valvae are apically rounded and covered with short setae. Sacculus closure elongated, slender, distally narrower and apically with four short thorns.Anellus short, pointed. Vinculum broad, laterally evenly curved. Saccus elongated, slightly wider distally. Phallus longer as genitalia length (2.3 mm), straight or slightly bent, with distinct roundish enlargement caudally, vesica with short cornuti. Discussion. A small species (wingspan 21.0– 23.5 mm) with relatively short and wide wings (FI below 2.0) and thus differ from the similar species (FI above 2.0). The species is also characterized at first glance by its relatively monochrome, densely scaled brown wings. Distribution. As far as known from the type locality in Tunisian. Bionomics. Unknown Etymology. The species is named after the type locality.The Djebel Chambi (arabic: Dschebel asch-Schaʿânabî) is a mountain range with the national park of the same name, in which the highest point in Tunisia is located at 1544 meters.Published as part of Arnscheid, Wilfried R., Rajaei, Hossein & Sobczyk, Thomas, 2021, A taxonomic review of the genus Amicta Heylaerts, 1881 in North Africa, Near and Middle East (Lepidoptera, Psychidae, Oiketicinae, Acanthopsychini), pp. 349-368 in Zootaxa 5071 (3) on page 361, DOI: 10.11646/zootaxa.5071.3.3, http://zenodo.org/record/572376
FIGURE 6 in Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India
No full textFIGURE 6: Larval case and dorsal view of larva of Acanthopsyche alstoni.Published as part of Usha, A. U., Sobczyk, T., Roby, T. J. & Jose, Joyce, 2022, Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India, pp. 136-144 in Zootaxa 5159 (1) on page 141, DOI: 10.11646/zootaxa.5159.1.7, http://zenodo.org/record/677105
A COMPARATIVE STUDY OF EFFECTS DUE TO ECCENTRICITY AND EXTERNAL STATOR AND ROTOR ASYMMETRIES BY MONOHARMONIC MODEL
No full textFIGURE 4a in Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India
No full textFIGURE 4a: ♂ Fore Wing venation, descaled, coloured in Fuchsine, mounted in alcohol; b: ♂ Hindwing Wing, descaled, coloured in Fuchsine, mounted in alcohol; 4c: Wing venation.Published as part of Usha, A. U., Sobczyk, T., Roby, T. J. & Jose, Joyce, 2022, Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India, pp. 136-144 in Zootaxa 5159 (1) on page 139, DOI: 10.11646/zootaxa.5159.1.7, http://zenodo.org/record/677105
FIGURE 8a in Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India
No full textFIGURE 8a: Male and female cases; b: Male case, pupal case and adult; c: Male bags and pupal cases.Published as part of Usha, A. U., Sobczyk, T., Roby, T. J. & Jose, Joyce, 2022, Neotype designation, redescription, biology and distribution of Acanthopsyche alstoni Watt & Mann, 1903 (Lepidoptera: Psychidae) from India, pp. 136-144 in Zootaxa 5159 (1) on page 142, DOI: 10.11646/zootaxa.5159.1.7, http://zenodo.org/record/677105
Diagnostic of induction machines by d-q and i.s.c. rotor models
No full textRecently both d-q and instantaneous symmetrical components (i.s.c.) models for faulty cage induction machines have been proposed for numerical simulations of stator instantaneous currents. Applying FFT algorithm to stator current the sideband components at frequencies (1±2s)f can be evaluated. The amplitudes of these components are commonly used as diagnostic index to assess rotor condition in the MCSA diagnostic procedures. With the assumption of infinite machine-load combined inertia value or ideal speed control the speed ripple due to rotor asymmetry will not be present. Steady-state conditions can be considered and only the component at frequency (1-2s)f will appear. If the above assumption does not hold, the (1-2s)f component correspond to the sum of the two sideband lines. In any case the parameterization, i.e. the definition of an asymmetry factor used as diagnostic index to define the fault severity, is a key item. The simplest asymmetry factor may be the definition of an equivalent additional resistance ΔRr linked to the number of contiguous broken bars. In this paper the proposals about the quantization of ΔR r found in the literature are reviewed and compared with reference to one broken bar. A new proposal is also presented and its effectiveness is proven
UNIQUE CLASSIFICATION OF SINGLE FREQUENCY INDUCTION MOTORS FEATURE INTRODUCED BY DIFFERENT ANOMALIES
No full textA general diagnostic method for doubly fed induction machine drives based on field oriented control
No full textThis paper presents a diagnostic technique for the detection of incipient electrical faults in a Doubly Fed Induction
Machine (DFIM) used for variable speed generation. In this application the stator windings are directly connected to the
grid, whereas a converter, which controls the rotor currents by means of a Field Oriented Control (FOC) scheme,
supplies the rotor. The aim of this paper is to introduce a new diagnostic technique based on the analysis of the rotor
inverter output voltages. In particular it will be shown that the frequency analysis of these signals leads to an effective
diagnostic procedure. The presented system is suitable to be easily plugged in any existing FOC-DFIM drive system
Diagnosis of induction machines in time-varying conditions
No full textA method is here presented that allows the diagnosis of broken rotor bars in time varying operations with simple post processing of input currents. Extensive simulations are presented to validate the proposed approach for open loop and closed loop induction machines. A diagnostic index is presented also, that is quite robust versus load and inertia variations
Physics Potential of a Long Baseline Neutrino Oscillation Experiment Using J-PARC Neutrino Beam and Hyper-Kamiokande
No full text39 pages, 26 figures, submitted to PTEPHyper-Kamiokande will be a next generation underground water Cherenkov detector with a total (fiducial) mass of 0.99 (0.56) million metric tons, approximately 20 (25) times larger than that of Super-Kamiokande. One of the main goals of Hyper-Kamiokande is the study of asymmetry in the lepton sector using accelerator neutrino and anti-neutrino beams. In this paper, the physics potential of a long baseline neutrino experiment using the Hyper-Kamiokande detector and a neutrino beam from the J-PARC proton synchrotron is presented. The analysis uses the framework and systematic uncertainties derived from the ongoing T2K experiment. With a total exposure of 7.5 MW 10 sec integrated proton beam power (corresponding to protons on target with a 30 GeV proton beam) to a -degree off-axis neutrino beam, it is expected that the leptonic phase can be determined to better than 19 degrees for all possible values of , and violation can be established with a statistical significance of more than () for () of the parameter space. Using both appearance and disappearance data, the expected 1 uncertainty of is 0.015(0.006) for
- …
