12,129 research outputs found
Sulle petizioni dell’Egitto romano contro la violenza dei funzionari
No full textLa condotta deviante dei funzionari, rappresentata in petizioni dell’Egitto romano fra I e III secolo trasmessi da papiri, esaminata mediante la terminologia utilizzata pertinente alla sfera personale, alla sfera dei codici etici di comportamento, alla sfera sociale, indica la ricerca della sympaheia dei destinatari. Le modalità di rappresentazione degli abusi da una parte dovevano suscitare la riprovazione sul piano etico, dall’altra gettavano un’ombra sulle conseguenze dannose sul piano sociale tanto per l’individuo, quanto per gli interessi dell’impero
Storia di Angelo Motta, metallizzatore
No full textNumerato anche p. 361-367Questo articolo è dedicato alla storia di Angelo Motta, un artigiano cremonese vissuto nell’Ottocento.
Motta affermò di aver scoperto un metodo rivoluzionario per trasformare qualsiasi tipo di oggetto
(anche un corpo umano) in un oggetto di metallo. In particolare si è occupato del suo caso uno psichiatra, Giuseppe Amadei.This article is dedicated to the story of Angelo Motta, a craftsman from Cremona, lived in the XIX century. Motta
claimed to have discovered a revolutionary method to transform any type of object (even a human body) into a
metal object. In particular, a psychiatrist, Giuseppe Amadei, took care of his case
Poder e resistência nas organizações: a propósito das contribuições de Fernando C. Prestes Motta
No full textDiscussion of the power concept found in Fernando C. Prestes Motta’s work, one of the author’s main objects of analysis.Discusión sobre la dimensión del poder en la obra de Fernando C. Prestes Motta, uno de los principales objetos de análisis del autor.Discussão da dimensão do poder na obra de Fernando C. Prestes Motta, um dos principais objetos de análise do autor
“4 ever green” - in Area n° 86 maggio/giugno 2006, Motta Architettura, Milano, pp. 82-89.
No full textprogetto pubblicatoin Area n° 86 maggio/giugno 2006, Motta Architettura, Milano, pp. 82-89
Male partner involvement in PNC service utilization in Motta district, North West Ethiopia, 2020(n = 595).
No full textMale partner involvement in PNC service utilization in Motta district, North West Ethiopia, 2020(n = 595).</p
Attitude of male partners towards PNC service in Motta District, North West Ethiopia, 2020 (n = 595).
No full textAttitude of male partners towards PNC service in Motta District, North West Ethiopia, 2020 (n = 595).</p
Country asymmetries, endogenous product choice and the timing of trade liberalization
No full textWe analyze the e!ects of trade liberalization on "rms' decisions and pro"ts in a vertical product di!erentiation model with countries which have di!erent characteristics. Firms decide product speci"cations at the beginning of the game, in which autarky is followed by trade liberalization (whose date is anticipated). Our analysis suggests that a "rm located in a large (or rich) country is the likely market leader at the trade equilibrium.
This outcome might be reversed if small country "rms have a strong cost advantage,
transport costs are negligible, or if the large country opens its market before the small one.Publicad
Role of patterning in islands nucleation on semiconductor surfaces
No full textQuantum dots (QDs) grown on semiconductors surfaces are actually the main researchers' interest for applications in the forthcoming nanotechnology era. New frontiers in nanodevice technology rely on the precise positioning of the nucleation site and on controlling the shape and size of the dots. In this article we will review some recent studies regarding the control of the nucleation process on semiconductor surfaces. A few approaches to form ordered patterns on surfaces are described: natural patterning induced by surface instabilities (as step bunching or step meandering), in situ substrate patterning by Scanning Tunneling Microscopy (STM), high resolution patterning by Focused Ion Beam (FIB). Growth of epitaxial layers of semiconductors (Ge/Si(100) and InAs/GaAs(100)) on patterned surfaces has been studied by STM or Atomic Force Microscopy (AFM) unveiling the way in which the first atoms start to aggregate and identifying their exact nucleation site. Control of the dot size to match the patterning typical wavelength has been achieved by using surfactants on misoriented substrates. STM images acquired in real time allows one to identify the mechanism of Ge cluster formation on patterned Si(100), and to follow the island transition from pre-pyramid to pyramid. Nucleation of ordered Ge dots on SiO2 substrates has been obtained thanks to FIB tight patterning, achieving island densities of 3.5 × 1010 / cm2. To cite this article: N. Motta et al., C. R. Physique 7 (2006). © 2006 Académie des sciences
The transition from 3C SiC(111) to graphene captured by ultra high vacuum scanning tunneling microscopy
No full textIn this paper we clarify the transformation mechanism of 3C-SiC into graphene upon thermal decomposition, by a combination of high resolution Scanning Tunneling Microscopy (STM) images and first principle calculations. We studied the transition from 3C-SiC to graphene by high temperature annealing of C-terminated 3C SiC (1 1 1)/Si (1 1 1) samples in Ultra High Vacuum. By using STM we were able to observe very clear atomic resolution images of the transition from SiC (v33)R30࠴o a new intermediate stage SiC View the MathML source (very close to the graphene (2 נ2) reconstruction) after annealing at 1250 î We also obtained images of the transformation of the intermediate structure into a (1 נ1) monolayer graphene, caused by further sublimation of atoms in the subsurface layer. We have interpreted the results by using Density Functional Theory - Local Density Approximation calculations, which give full account of the SiC (v33)R30࠲econstruction, but fail to describe the SiC View the MathML source structure due to its incommensurability with the 3C-SiC (1 1 1) lattice.Full Tex
Ocrepeira planalto Ferreira-Sousa & Motta 2022, new species
No full textOcrepeira planalto new species Figs. 23 –31 Material examined. Female holotype (DZUB 9280) and male and female paratypes (DZUB 9279) from Brazil, Bahia, Jaborandi, Fazenda Trijunção [-14.643925, -45.802133] collected by P. C. Motta XI.2018; female from Brazil, Goiás, Alto Paraíso (São Jorge), Parque Nacional Chapada dos Veadeiros [-14.038814, -47.622971]. Collected by P. C. Motta, X.2009 (DZUB 5357); male from Brazil, Goiás, Cavalcante, Fazenda Miraflores [-13.811866, -47.432565]. Collected by P. C. Motta, XI.2013 (DZUB 7494); female from Brazil, Goiás, Cristalina, Serra dos Topázios [-16.716671, -47.633332]. Collected by P. C. Motta, XI.2016 (DZUB 8701). Etymology. The species is named after the geographical region of the type locality, named Planalto Central (noun in apposition). Generic placement. It belongs in Ocrepeira by having wide and low carapace. The abdomen has one pair of anterior tubercles and is attached to the pedicel by its anterior half. The epigynum have a broad scape and is heavily sclerotized, with distinct median and lateral plates. In the males, one macroseta is present on the palpal patella. The large conductor is attached to the thin paramedian apophysis and the median apophysis is long and wide, as stated by Levi (1993). Diagnosis. The females differ from most Ocrepeira species by the wide lateral plates of the epigynum touching each other in the posterior view and partially hiding the posterior median plate (Fig. 25). Ocrepeira pinhal Levi has both the lateral plates touching and triangular scape originating from the base of the epigynum (Levi, 1993, fig. 213) as in O. planalto n. sp. The latter is different by having the scape slightly smaller than the base (Fig. 23), and the epigynum is about square-shaped in posterior view due to its very wide lateral plates (Fig. 24). Furthermore, two dark spots are present in the ventral view of the epigynum in all females of O. planalto n. sp. (Fig. 22). The male resembles O. gima Levi by the sickle-shaped terminal apophysis and the size of the median apophysis. It differs by the elliptical shape of the conductor. Both terminal and median apophysis are longer and the latter has a smooth tip (Fig. 27). Description. Female holotype from Fazenda Trijunção, Jaborandi. Total length 6.40. Carapace: 3.05 long, 2.68 wide, 1.18 high. Cephalic region brown with short white setae, thoracic region with glabrous dark brown sides. Clypeus: 0.21. Chelicerae: orange to brown, fangs redish-brown. Eye diameters: AME 0.14, ALE 0.11, PME 0.16, PLE 0.10. Eye interdistances: AME–AME 0.18, AME–ALE 0.53, PME–PME 0.25, PME–PLE 0.67, AME–PME 0.15. Endites: 0.54 long, 0.46 wide, brown, white from the half to median edges. Labium: 0.45 long, 0.64 wide, same color pattern as in endites. Sternum: 1.30 long, 1.34 wide, orange with white spots. Legs: yellow with irregular brown rings and spots. Leg formula 1 2 4 3. Measures: L1. Femur 3.27, patella 1.44, tibia 2.48, metatarsus 2.32, tarsus 0.90 / L2. Femur 2.93, patella 1.43, tibia 2.07, metatarsus 2.16, tarsus 0.78 / L3. Femur 1.73, patella 0.94, tibia 1.25, metatarsus 1.13, tarsus 0.63 / L4. Femur 2.57, patella 1.05, tibia 1.90, metatarsus 1.95, tarsus 0.68 / Pedipalp. Femur 0.75, patella 0.40, tibia 0.54, tarsus 0.93. Abdomen: 5.57 long, 3.93 wide, 2.67 high. Dark grey with light spots and a white cardiac mark, the sides have a wavy black line each. The venter has a wide dark grey area, with two small white spots near the spinnerets. Male paratype from Fazenda Trijunção, Jaborandi. Total length 4.91. Carapace: 2.57 long, 2.28 wide, 0.81 high. Covered with short white setae on the sides, cephalic region orange with brown spots, thoracic region orange with brown. Clypeus: 0.18. Chelicerae: orange to greyish-orange, fangs brown. Eye diameters: AME 0.15, ALE 0.09, PME 0.16, PLE 0.08. Eye interdistances: AME–AME 0.15, AME–ALE 0.27, PME–PME 0.24, PME–PLE 0.40, AME–PME 0.11. Endites: 0.38 long, 0.40 wide; orange, white from the half to median edges. Labium: 0.24 long, 0.42 wide, same color pattern as in endites. Sternum: 1.18 long, 1.06 wide, light orange with white spots. Legs: same color pattern as in females, second femur with groove, second tibia wide and armored with strong macrosetae. First coxae with a distal hook, third and fourth coxae and trochanters with one macrosetae each. Leg formula 1 2 4 3. Measures: L1. Femur 2.57, patella 0.97, tibia 1.89, metatarsus 1.78, tarsus 0.66 / L2. Femur 2.69, patella 1.03, tibia 1.67, metatarsus 1.89, tarsus 0.74 / L3. Femur 1.66, patella 0.66, tibia 1.10, metatarsus 0.89, tarsus 0.53 / L4. Femur 2.21, patella 0.74, tibia 1.38, metatarsus 1.62, tarsus 0.61. Abdomen: 2.93 long, 2.33 wide, 1.03 high.Abdomen grey with light spots. The venter has a big grey square and two white spots near the spinnerets, as in females. Variation. Total length of females 6.40 to 8.50. Abdomen varies from orange to dark grey and pattern of spots and stripes on the dorsal abdomen may be variable. Total length of males 3.95 to 4.91, the abdominal wavy black line might be inconspicuous. Matching sexes. One pair was collected in a recently made wasp nest in Jaborandi. They were considered conspecific by having one pair of abdominal tubercles with an anterior white band between them, ventral abdomen with a pair of posterior white patches, legs with femur distal brown and proximal beige, AME straight, PME procurved and on a swelling, and clypeus height about 1.5 diameters of AME. Distribution and natural history. Found in Central Brazil. The females were collected in the hub of complete orb-webs. One specimen from Jaborandi made its egg sac and wrapped it with the data label as observed in the female of Carepalxis quasimodo n. sp.Published as part of Ferreira-Sousa, Leonardo & Motta, Paulo César, 2022, Diagnostic notes on the spider orb-weaving genera Carepalxis and Ocrepeira (Araneae: Araneidae), with description of three new species from Central Brazil, pp. 389-399 in Zootaxa 5087 (2) on pages 395-398, DOI: 10.11646/zootaxa.5087.2.9, http://zenodo.org/record/582432
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