5,800 research outputs found
Periscelis Roháček & Andrade, 2017, s. str.
No full textKey to identification of the Palaearctic taxa of the subgenus <i>Periscelis</i> s. str. <p>1 Wing with membrane unicolorous; posterior cross-vein (dm-cu) absent................... 2</p> <p>– Wing with fumose cloudings; posterior cross-vein (dm-cu) developed (Fig. 2)........ 4</p> <p> 2(1) Larger species (body length more than 4 mm). Antennal pedicel (not scape) blackish brown. Ventral part of face yellow, whitish microtomentose and with 5–6 pairs of setae. Mesonotum grey microtomentose with a pair of longitudinal brownish microtomentose vittae. A pair of strong prescutellar ac setae (situated in front of posterior dc) present. Male genitalia with robust elongately triangular surstylus, short subtriangular gonostylus (PAPP & WITHERS 2011: Fig. 1) and cercus large, broad and with long setae.......................................................................................... <i>P. annulipes</i> Loew, 1858</p> <p>– Smaller species (body length distinctly less than 3 mm). Pedicel pale brown, ochreous yellow basally. Ventral part of face brown, grey microtomentose and with only 1 pair of setae. Mesonotum dark grey, with pale grey microtomentum. No prescutellar ac. Male genitalia with very slender and long surstylus, elongately subtriangular gonostylus, and cercus more slender but with robust setae (PAPP & WITHERS 2011: Figs 6, 7)...................................................................................................................................... 3</p> <p> 3(2) Gonostylus longer, hence surstylus less than 1.4 times as long as gonostylus (PAPP & WITHERS 2011: Fig. 5); ejacapodeme more robust and proximally not widened (PAPP & WITHERS 2011: Figs 3, 6)......................................... <i>P. nigra nigra</i> (Zetterstedt, 1860)</p> <p> – Gonostylus shorter, hence surstylus about 1.6 times as long as gonostylus (PAPP & WITHERS 2011: Figs 7, 14, 15); ejacapodeme more slender and proximally dilated (PAPP & WITHERS 2011: Figs 7, 9)................................ <i>P. nigra minor</i> Papp & Withers, 2011</p> <p> 4(3) Antennal pedicel with blackish spot on outer side extended laterally up to ventral margin (Fig. 5). Mesonotum medially unicolorous grey (Fig. 5) or with brown vittae only indicated (Fig. 33); scutellum all dark or with yellow restricted to apex (Figs 5, 34). Male S6 widened posteriorly, brown pigmented along anterior and lateral margins, simple posteromedially (Fig. 22). Gonostylus more slender and with apex bent anteriorly (Fig. 26); postgonite distally more robust but its broad proximal part not extended posteroventrally (Fig. 25). Female T8 posteromedially pale-pigmented, darker only laterally (Fig. 29); S8 narrowly brown only laterally and less densely setose (Fig. 30)......................................................................................... <i>P. winnertzii</i> Egger, 1862</p> <p> – Antennal pedicel with blackish spot smaller, laterally reaching to about half of its outer side (Fig. 4). Mesonotum medially with distinct pair of brown vittae (Fig. 3); scutellum with largely or entirely yellow disc (Fig. 3). Male S6 suboblong, not widened posteriorly, brown pigmented only laterally and with narrow medial depression (Fig. 13). Gonostylus shorter and thicker, with apex simple (Fig. 9); postgonite distally more slender and broad proximal part produced posteroventrally (Fig. 8, arrow). Female T8 uniformly brown pigmented (Fig. 16); S8 narrowly brown laterally and posteriorly and more densely setose (Fig. 17)............................................................ <b> <i>P. fugax</i> sp. nov.</b> </p>Published as part of <i>Roháček, Jindřich & Andrade, Rui, 2017, Periscelis fugax sp. nov., an overlooked European species of Periscelididae (Diptera), with notes on the morphology and terminology of terminalia, pp. 229-251 in Acta Entomologica Musei Nationalis Pragae 57 (1)</i> on pages 248-249, DOI: 10.1515/aemnp-2017-0071, <a href="http://zenodo.org/record/5378009">http://zenodo.org/record/5378009</a>
Exchange Rate and Interest Rate Volatility in a Target Zone: The Portuguese Case
No full textThis work examines the participation of the Portuguese economy in the ERM of the EMS based on some of the main predictions of the target zone literature. The exchange rate distribution reveals that the majority of the observations lie close to the central parity, thus rejecting one of the key predictions of the Krugman (1991) model. Using a M-GARCH model however we confirm that there is a trade-off between exchange rate volatility and interest rates differential volatility. These results express the increased credibility of the Portuguese monetary policy, due manly to the modernisation of the banking and financial system and to the progress made in terms of the disinflation process under an exchange rate target zone policy. In accordance to these results we can say that the participation of the Portuguese escudo in an exchange rate target zone was crucial to create the conditions of stability, credibility and confidence necessary for the adoption of a single currency.Credibility, Exchange rate stability, M-GARCH, ERM, EMS, Volatility and target zones
Shannoniella setinervis Nihei, Andrade, Pape & Cerretti, 2016, sp. nov.
No full textShannoniella setinervis sp. nov. (Figs 2 a–g) References. Cerretti & Pape (2012); Cerretti et al. (2014) [both as “ Shannoniella sp.”]. Type-material examined: Holotype ♂ (MZSP), “Therezopolis [Teresópolis]/ Est. do Rio [Rio de Janeiro State] XI- 39 / J. F. T. de Freitas [collector]” (white label with black border), “ 10 C” (white label with black border), “Holotipo” (green label), “ Shannoniella / setinervis / S.S. Nihei des. 2015 ”. Paratypes: 2 ♂, Brazil, Paraná, São José dos Pinhais, Serra do Mar, 20.VII. 1984, J.A. Rafael (CNC). Etymology: The species epithet is derived from the Latin seta = bristle and nervus = vein. The species is named after the more extensive row of setulae dorsally on wing vein R 4 + 5 as compared with its sister species S. cuspidata. Description. Male. Body length: 4.3 mm (holotype); wing length: 3.5 mm (holotype). Colour (Fig. 2 a). Body mostly light brown. Head light brown with grey pruinosity on gena, postgena and face; scape brown; pedicel yellow; postpedicel orangish brown, the base near arista yellowish; arista orangish brown with yellow base; palpus yellow. Thorax light brown with grey pruinosity on notopleuron, anepisternum, katepisternum, anatergite and katatergite. Coxae light brown with grey pruinosity; trochanters yellowish; femora yellowish with the apical third light brown; tibiae and tarsi light brown. Wing infuscated with light brown, but with 3 clear (non-infuscated), hyaline spots on cells r 4 + 5, dm and m. Upper and lower calypters slightly infuscated on borders. Abdomen light brown. Head (Fig. 2 b). Eye bare. Arista thickened almost to the tip; arista thickly micropubescent. First and second aristomere elongated, the second as long as the pedicel; third aristomere very long, about 2.9 times as long as the pedicel. Postpedicel elongate, slightly surpassing lower facial margin, about 4.5 times as long as the pedicel. Frontal stripe with subparallel margins, width at vertex about 1.8 times the eye width in dorsal view, and about 0.5 times the head width. No ocellar setae. Inner vertical seta strong and convergent; outer vertical seta not developed. Two lateroclinate orbital setae, the uppermost stronger. Seven frontal setae. Parafacial bare, very narrow. Face very broad, deeply sunken. Vibrissal angle below ventral margin of gena, distinctly projected forward and turned inwards. Vibrissa not easily distinguished from the several perivibrissal setae. Facial ridge straight and setulose along its full length. Postocular setae short. Proboscis and palpus short. Thorax. Scutum with long, fine clothing setulae; acrostichals not developed; dorsocentrals 2 + 3, the presutural ones interspersed by moderately long setulae; no intra-alars; supra-alars 1 + 1, prealar (first postsutural supra-alar before the wing insertion) not developed. Postpronotum with 2 strong and long setae, with fine clothing setulae. Posthumeral 1; notopleurals 2, the anterior nearly twice as long as the posterior. Prosternum and proepisternum bare. One upcurved proepisternal and one upcurved proepimeral setae. Two katepisternals. Three long anepimeral setulae, one more developed. Katepimeron bare. Anatergite with fine setulae. Scutellum with one pair of long, divergent subapical setae; one pair of median discal setae close to the margin and nearly as long and strong as the subapicals; some irregularly developed discal setulae. Legs. Fore femur with a row of long posteroventral setae, and the posterior surface with several developed setae. Fore tibia with one weak submedian posterodorsal seta, and one weak submedian posteroventral seta. Mid tibia with one weak submedian posterodorsal seta. Hind tibia with one submedian anterodorsal seta, one submedian posterodorsal seta, and one submedian anteroventral seta (erect in right leg, but not in left leg). Wing (Fig. 2 c). Costal spine not differentiated. Vein R 1 entirely setulose dorsally; R 4 + 5 setulose dorsally from the base and reaching the level of crossvein dm-cu. Section of M between crossvein dm-cu and the apical bend about 0.9 times as long as the preceding section (between dm-cu and r-m crossveins). M reaching costa at wing margin; cell r 4 + 5 open, the distance between M and R 4 + 5 at wing margin about three times as long as crossvein r-m. Vein R 4 + 5 diverging from R 2 + 3, the distance between both at wing margin longer than crossvein dm-cu (this about 3 / 4 times the said distance). Abdomen (Fig. 2 d). Tergites covered by long fine setulae. Syntergite 1 + 2 without a mid-dorsal depression, with several lateral setae, and one pair of median marginal setae. Tergites 3, 4 and 5 each with a row of marginal setae. Male terminalia (Figs 2 e–g). Sternite 5 (Fig. 2 e) upright laterally, with a deep median cleft; lateral lobe characterized by a posterior three-dimensional cap-like apophysis, but slightly bilobed laterally; median basal window absent. Tergite 6 divided medially into two hemitergites, each with a row of setae along posterior margin and separated from segment 7 + 8 by a very narrow membrane. Sternite 6 almost symmetrical, articulated with segment 7 + 8 on left side, and attached to it by a short membrane on its right side. Epandrium very short and convex. Surstylus well developed, broad in lateral view; surstylus widely fused to epandrium (Fig. 2 f). Cerci slightly shorter than surstylus, not fused medially (Fig. 2 f), pointed apically (sub-triangular in lateral view). Processi longi strongly widened at mid-length and medially almost touching each other; processus longus firmly and widely fused with surstylus. Basal plate of hypandrium very short, not concave, hypandrial arms very long and converging. Aedeagus (Fig. 2g) with pregonite well developed, sub-triangular and with 2 setae postero-apically. Postgonite with a long (fine) seta at about mid length of anterior margin. Epiphallus well developed, strongly widened and sub circular distally in lateral view. Dorsolateral processes well fused medially in a single narrow sclerotization. Median process of ventral sclerite of distiphallus firmly fused to the base of ventral sclerite and divided longitudinally into two hemisclerites. Lateroventral lobe of distiphallus in sub-distal position and covered with slightly sclerotized scale-like spinulae. Acrophallus membranous. Female. Unknown. Distribution. The species appears to be restricted to the Brazilian Atlantic Forest (here recorded from the states of Rio de Janeiro and Paraná).Published as part of Nihei, Silvio S., Andrade, Marcos R., Pape, Thomas & Cerretti, Pierfilippo, 2016, The Shannoniella sisters (Diptera: Rhinophoridae), pp. 85-92 in Zootaxa 4061 (1) on pages 89-91, DOI: 10.11646/zootaxa.4061.1.9, http://zenodo.org/record/27038
Conformationally Constrained Functional Peptide Monolayers for the Controlled Display of Bioactive Carbohydrate Ligands
No full textIn this study, we employed thiolated peptides of the conformationally constrained, strongly helicogenic alpha-aminoisobutyric acid (Aib) residue to prepare self-assembled monolayers (SAMs) on gold surfaces. Electrochemistry and infrared reflection absorption spectroscopy support the formation of very well packed Aib-peptide SAMs. The immobilized peptides retain their helical structure, and the resulting SAMs are stabilized by a network of intermolecular H bonds involving the NH groups adjacent to the Au surface. Binary SAMs containing a synthetically defined glycosylated mannose-functionalized Aib-peptide as the second component display similar features, thereby providing reproducible substrates suitable for the controlled display of bioactive carbohydrate ligands. The efficiency of such Aib-based SAMs as a biomolecular recognition platform was evidenced by examining the mannose-concanavalin A interaction via surface plasmon resonance biosensing
Fractal dimension and Shannon's entropy analyses of the architectural complexity caused by the inflammatory reactions induced by highly crystalline poly(vinyl alcohol) microspheres implanted in subcutaneous tissues of the Wistar rats.
No full textEntanglement and quantity in quantum space - About quantum measurement (II)
No full textAs a continuation and extension of "quantity in phase space" "quantity in quantum space" is introduced. With that, the disappearing of quantum interference discussed in a previous paper [S. Durr, et al., Nature 395 (1998) 33] is explained in the same spirit as our recent papers [Ren De-Ming, Commun. Theor. Phys. (Beijing, China) 41 (2004) 685, 833].Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)1ARTICLE133-364
Sneutrino DM in the NMSSM with inverse seesaw mechanism
No full textIn supersymmetric theories like the Next-to-Minimal Supersymmetric Standard Model (NMSSM), the lightest neutralino with bino or singlino as its dominant component is customarily taken as dark matter (DM) candidate. Since light Higgsinos favored by naturalness can strength the couplings of the DM and thus enhance the DM-nucleon scattering rate, the tension between naturalness and DM direct detection results becomes more and more acute with the improved experimental sensitivity. In this work, we extend the NMSSM by inverse seesaw mechanism to generate neutrino mass, and show that in certain parameter space the lightest sneutrino may act as a viable DM candidate, i.e. it can annihilate by multi-channels to get correct relic density and meanwhile satisfy all experimental constraints. The most striking feature of the extension is that the DM-nucleon scattering rate can be naturally below its current experimental bounds regardless of the higgsino mass, and hence it alleviates the tension between naturalness and DM experiments. Other interesting features include that the Higgs phenomenology becomes much richer than that of the original NMSSM due to the relaxed constraints from DM physics and also due to the presence of extra neutrinos, and that the signatures of sparticles at colliders are quite different from those with neutralino as DM candidate.National Natural Science Foundation of China (NNSFC) [11575053]SCI(E)ARTICLE1
Classical mechanics and quantum mechanics
No full textThe Newton equation of motion is derived from quantum mechanics.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)2ARTICLE5685-6884
Fast identification of biological pathways associated with a quantitative trait using group lasso with overlaps.
No full textWhere causal SNPs (single nucleotide polymorphisms) tend to accumulate within biological pathways, the incorporation of prior pathways information into a statistical model is expected to increase the power to detect true associations in a genetic association study. Most existing pathways-based methods rely on marginal SNP statistics and do not fully exploit the dependence patterns among SNPs within pathways.We use a sparse regression model, with SNPs grouped into pathways, to identify causal pathways associated with a quantitative trait. Notable features of our "pathways group lasso with adaptive weights" (P-GLAW) algorithm include the incorporation of all pathways in a single regression model, an adaptive pathway weighting procedure that accounts for factors biasing pathway selection, and the use of a bootstrap sampling procedure for the ranking of important pathways. P-GLAW takes account of the presence of overlapping pathways and uses a novel combination of techniques to optimise model estimation, making it fast to run, even on whole genome datasets.In a comparison study with an alternative pathways method based on univariate SNP statistics, our method demonstrates high sensitivity and specificity for the detection of important pathways, showing the greatest relative gains in performance where marginal SNP effect sizes are small
Policy-driven Data Sharing over Attribute-Based Encryption supporting Dual Membership
No full textAttribute-Based Encryption (ABE) plays an important role in current secure data sharing through fine-grained customizable policies. However, the existing ABE schemes only support simple predicates, = and ≠, but cannot express a more general membership predicates, ∈ and ∉, in policies. The low expressivity of ABE will enlarge the ciphertext storage and reduce the communication efficiency. To overcome this problem, we propose an ABE supporting Dual Membership (DM-ABE). The core problem for implementing this scheme is how to use cryptographic methods to decide the membership between the verified element and the given set. In order to solve this problem, we design a cryptographic algorithm, called Secure Decision of Membership (SDM), based on aggregation functions. In this algorithm, any set can be aggregated into one cryptographic element, and the verified element and the given set can be converted into another cryptographic element in decision process. The membership between them can be decided by the above two cryptographic elements. Furthermore, we construct the DM-ABE by using SDM. Because of the good expressivity of our DM-ABE, we further propose a novel cryptographic data sharing framework by integrating DM-ABE and attribute-based access control to provide fine-grained access control and security protection for private data. In the security proof of DM-ABE, we prove that the DM-ABE satisfies the semantic security against chosen-plaintext attacks under the DBDHE assumption in the standard model through a unified way, considering both two encryption methods for ∈ and ∉ at the same time. Finally, we analyze our scheme in terms of time and space complexity, and compare it with some existing schemes. The results show that our DM-ABE has a better expressive ability on the boolean logic of general membership predicates, ∈ and ∉.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
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