2,812 research outputs found
On the deep string spectrum
No full textThese proceedings are based on the author's invited talk reviewing the original published work [1,2] of the author with collaborators. The subject matter is a new, covariant and efficient technology of constructing entire trajectories of physical string states deeper inside the string spectrum than the leading Regge. The key observation behind the technology is that the lowering operators of a symplectic algebra appear in the Virasoro constraints which impose physicality of states in the open bosonic string. This algebra commutes with the spacetime Lorentz algebra, (of the little group) of which all string states are irreducible representations. Employing then the so-called Howe duality of representation theory, one may relate the irreducible representations of the two algebras via a bijection. The spectrum thus splits into two parts: trajectories that are lowest weight states of the symplectic algebra and their infinitely many clones. The latter can then be reached by suitably dressing the former with the raising operators of the symplectic algebra. The technology is nontrivially extended to the open superstring, where the relevant Howe dual is an orthosymplectic algebra
Profil des Politiques linguistiques éducatives : Chypre
No full texten collaboration avec A. Dobson, H. Ebke, K. Markou, L. Preoteasa, P. Thalgott ;existe aussi en anglaisInternational audienc
Les boucles d'oreilles, bijoux masculins à Chypre et en Méditerranée orientale (VIIe-IVe siècles avant J.-C.)
No full textÀ l'époque archaïque le port par des hommes de boucles d'oreilles est loin d'être réservé aux peuples barbares orientaux et africains, comme le laisseraient croire les textes grecs et latins. Au VIIe s. et dans la première moitié du VIe s., cette mode est attestée en Grèce de l'Est et surtout à Chypre, où elle connaît un succès considérable (présence très fréquente de ces bijoux sur les statuettes en terre cuite et les sculptures en calcaire, aussi bien pour des personnages barbus qu'imberbes). Elle disparaît du monde grec proprement dit avant la fin de l'époque archaïque et ne subsiste à Chypre, sous la domination achéménide, que pour des enfants ou des jeunes gens : il est donc d'autant plus intéressant de constater qu'à partir d'Évagoras II, les rois de Salamine ont représenté sur certaines de leurs émissions un buste portant une boucle d'oreille qui est presque certainement celui d'un homme.Hermary Antoine, Markou Évangéline. Les boucles d'oreilles, bijoux masculins à Chypre et en Méditerranée orientale (VIIe-IVe siècles avant J.-C.). In: Cahiers du Centre d'Etudes Chypriotes. Volume 33, 2003. pp. 211-236
Agricultural situation report of Cyprus and the market and trade policies for fruit/vegetable and olive oil
No full textDuring the last decade the Cypriot agricultural sector has been declining in terms of most indices in the economy, mainly due to the spiraling growth of tourism, as crucial investment outlays were diverted from agriculture to tourism; the most important factors of production being land and labor due to substantially higher yields accruing to both. The Domestic Resource Cost (DRC) revealed that the three products studied for the period 1997 to 2000, i.e. tomatoes, oranges and olive oil had a comparative advantage. However, the opening of the European market with EU accession led to the substantive undermining of competitiveness of agricultural products and to the reduction of the value of exports. It is believed that DRC ratios would be higher today that the ones reported, due to unchanged /decreased border prices and increased costs of tradable inputs. It is suggested that the tomato, orange and olive oil sectors will become more competitive in the European market if factors that are affecting their marketing, like differentiation of production and quality, are improved. New concepts like organic farming and products of origin are very important and may provide profitable outlets in the new globalized economy. Additionally, favorable climatic conditions are vastly for and conducive to the production of early season Mediterranean products with obvious premium attached in the market place.Domestic Resource Cost, Competitiveness, Tomatoes, Oranges, Olive Oil, International Relations/Trade,
Cultivation of Chlorella vulgaris and Arthrospira platensis with recovered phosphorus from wastewater by means of zeolite sorption
No full textIn this study, zeolite was employed for the separation and recovery of P from synthetic wastewater and its use as phosphorus (P) source for the cultivation of the green microalga Chlorella vulgaris and the cyanobacterium Arthrospira (Spirulina) platensis. At P-loaded zeolite concentration of 0.15–1 g/L, in which P was limited, the two species displayed quite different behavior regarding their growth and biomass composition. C. vulgaris preferred to increase the intracellular P and did not synthesize biomass, while A. platensis synthesized biomass keeping the intracellular P as low as possible. In addition under P limitation, C. vulgaris did display some little alteration of the biomass composition, while A. platensis did it significantly, accumulating carbohydrates around 70% from about 15%–20% (control). Both species could desorb P from zeolite biologically. A. platensis could recover over 65% and C. vulgaris 25% of the P bounded onto zeolite. When P-loaded zeolite concentration increased to 5 g/L, P was adequate to support growth for both species. Especially in the case of C. vulgaris, growth was stimulated from the presence of P-loaded zeolite and produced more biomass compared to the control.sponsorship: Giorgos Markou would like to thank Dimitris Georgakakis for his help for the realization of the experiments. Dries Vandamme is postdoctoral researcher funded by the Research Foundation Flanders, Belgium (FWO). (Research Foundation Flanders, Belgium (FWO))status: Publishe
Salamine de Chypre. II. La tombe T. I. du ΧIe s. av. J.-C.
No full textYon Marguerite. II. La tombe T. I. du ΧIe s. av. J.-C. Avec une contribution de P. Barguet, Professeur à l'Université de Lyon. Plans et dessins par P. -A. Pironin et I. Markou. Paris : de Boccard, 1971. 168 p. (Salamine de Chypre, 2
Clinical and organizational factors associated with mortality during the peak of first COVID-19 wave: the global UNITE-COVID study (Intensive Care Medicine, (2022), 48, 6, (690-705), 10.1007/s00134-022-06705-1)
No full textPublisher Copyright: © 2022 The Author(s).In the original version of this article, the given and family names of Kristina Fuest, Tobias Lahmer, Johannes Herrmann, Patrick Meybohm, Nikolaos Markou, Georgia Vasileiadou were incorrectly structured. The Publisher apologises for this mistake.publishersversionpublishe
Corrigendum to “Delta SARS-CoV-2 variant is entirely substituted by the omicron variant during the fifth COVID-19 wave in Attica region” [Sci. Total Environ., 856(Pt 1) (2023)/159062] (Science of the Total Environment (2023) 856(P1), (S0048969722061617), (10.1016/j.scitotenv.2022.159062))
No full textThe authors state that the printed version of the above article missed the contribution of an author, which was that the third author had contributed to the writing of the original draft in addition to methodology. The correct and final version follows. CRediT authorship contribution statement Aikaterini Galani: Methodology, Validation, Writing – original draft. Athina Markou: Supervision, Writing – review & editing, Project administration. Lampros Dimitrakopoulos: Methodology, Writing – original draft. Aikaterini Kontou: Validation. Marios Kostakis: Validation. Vasileios Kapes: Methodology. Marios A. Diamantopoulos: Formal analysis, Software. Panagiotis G. Adamopoulos: Formal analysis. Margaritis Avgeris: Formal analysis, Writing– review & editing. Evi Lianidou: Writing – review & editing. Andreas Scorilas: Formal analysis. Dimitrios Paraskevis: Writing – review & editing. Sotirios Tsiodras: Writing – review & editing. Meletios-Athanasios Dimopoulos: Funding acquisition, Writing – review & editing. Nikolaos Thomaidis: Conceptualization, Project administration, Visualization, Resources. © 2022 Elsevier B.V
The coupling of non-linear supersymmetry to supergravity
No full textWe study the coupling of non-linear supersymmetry to supergravity. The goldstino nilpotent superfield of global supersymmetry coupled to supergravity is described by a geometric action of the chiral curvature superfield R subject to the constraint (R−λ)2=0 with an appropriate constant λ. This constraint can be found as the decoupling limit of the scalar partner of the goldstino in a class of f(R) supergravity theories
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