Fluid-physics-module experiments

Some floating-liquid-zone experiments performed under reduced-gravity conditions are reviewed. Several types of instabilities are discussed, together with the relevant parameters controlling them. It is shown that the bounding values of these parameters could be increased, by orders of magnitude in several instances, by selecting appropriate liquids. Two of the many problems that a Fluid-Physics Module, devised to perform experiments on floating zones in a space laboratory, would involve are discussed: namely (i) procedures for disturbing the zoneunder controlled conditions, and (ii) visualisation of the inner flow pattern. Several topics connected with the nonisothermal nature and the phase-changes of floating zones are presented. In particular, a mode of propagation through the liquid zone for disturbances which could appear in the melting solid/liquid interface is suggested. Although most research on floating liquid zones is aimed at improving the crystal-growth process, some additional applications are suggested

Patterns of Strong Coupling for LHC Searches

Even though the Standard Model (SM) is weakly coupled at the Fermi scale, a new strong dynamics involving its degrees of freedom may conceivably lurk at slightly higher energies, in the multi TeV range. Approximate symmetries provide a structurally robust context where, within the low energy description, the dimensionless SM couplings are weak, while the new strong dynamics manifests itself exclusively through higher-derivative interactions. We present an exhaustive classification of such scenarios in the form of effective field theories, paying special attention to new classes of models where the strong dynamics involves, along with the Higgs boson, the SM gauge bosons and/or the fermions. The IR softness of the new dynamics suppresses its effects at LEP energies, but deviations are in principle detectable at the LHC, even at energies below the threshold for production of new states. Our construction provides the so far unique structurally robust context where to motivate several searches in Higgs physics, diboson production, or WW scattering, which were so far poorly justified. Perhaps surprisingly, the interplay between weak coupling, strong coupling and derivatives, which is controlled by symmetries, can override the naive expansion in operator dimension, providing instances where dimension-8 dominates dimension-6, well within the domain of validity of the low energy effective theory. This result reveals the limitations of an analysis that is both ambitiously general and restricted to dimension-6 operators.Comment: 37 pages, 1 figur

El yacimiento de Sela (Jordania) : la expansión imperial neo-babilónica en el altiplano de Edom a mediados del I milenio a.C

The site of as-Sila has been identified with Edomite Sela, frequently mentioned in the Bible. The site was important in the Iron Age (as demonstrated by the presence of many structures and the Neo-Babylonian cuneiform rock-inscription of king Nabonidus, 556-539 BCE), and also during the Nabatean and Roman periods. The survey work at Sela has revealed a very large site with a considerable number of structures related to water, and architectonic structures of varying sizes: rock-cut houses, remains of rock-cut large buildings, towers, etc. A comprehensive study of the site would help us to analyse the relationship between the Neo-Babylonian Empire and the West (Edom) in the context of Nabonidus' Arabian campaigns

The Site of Sela (Jordan)

The site of as-Sila has been identified with Edomite Sela, frequently mentioned in the Bible. The site was important in the Iron Age (as demonstrated by the presence of many structures and the Neo-Babylonian cuneiform rock-inscription of king Nabonidus, 556-539 BCE), and also during the Nabatean and Roman periods. The survey work at Sela has revealed a very large site with a considerable number of structures related to water, and architectonic structures of varying sizes: rock-cut houses, remains of rock-cut large buildings, towers, etc. A comprehensive study of the site would help us to analyse the relationship between the Neo-Babylonian Empire and the West (Edom) in the context of Nabonidus' Arabian campaigns.The site of as-Sila has been identified with Edomite Sela, frequently mentioned in the Bible. The site was important in the Iron Age (as demonstrated by the presence of many structures and the Neo-Babylonian cuneiform rock-inscription of king Nabonidus, 556-539 BCE), and also during the Nabatean and Roman periods. The survey work at Sela has revealed a very large site with a considerable number of structures related to water, and architectonic structures of varying sizes: rock-cut houses, remains of rock-cut large buildings, towers, etc. A comprehensive study of the site would help us to analyse the relationship between the Neo-Babylonian Empire and the West (Edom) in the context of Nabonidus' Arabian campaigns.The site of as-Sila has been identified with Edomite Sela, frequently mentioned in the Bible. The site was important in the Iron Age (as demonstrated by the presence of many structures and the Neo-Babylonian cuneiform rock-inscription of king Nabonidus, 556-539 BCE), and also during the Nabatean and Roman periods. The survey work at Sela has revealed a very large site with a considerable number of structures related to water, and architectonic structures of varying sizes: rock-cut houses, remains of rock-cut large buildings, towers, etc. A comprehensive study of the site would help us to analyse the relationship between the Neo-Babylonian Empire and the West (Edom) in the context of Nabonidus' Arabian campaigns

'El yacimiento de Sela (Jordania) La expansión imperial neo-babilónica en el altiplano de Edom a mediados del I milenio a.C.[The Site of Sela (Jordan)]

The site of as-Sila has been identified with Edomite Sela, frequently mentioned in the Bible. The site was important in the Iron Age (as demonstrated by the presence of many structures and the Neo-Babylonian cuneiform rock-inscription of king Nabonidus, 556-539 BCE), and also during the Nabatean and Roman periods. The survey work at Sela has revealed a very large site with a considerable number of structures related to water, and architectonic structures of varying sizes: rock-cut houses, remains of rock-cut large buildings, towers, etc. A comprehensive study of the site would help us to analyse the relationship between the Neo-Babylonian Empire and the West (Edom) in the context of Nabonidus' Arabian campaigns

Rethinking temporary shelter and settlements through participatory design: a proposal for the Samos Closed Controlled Access Centre

openRefugee camp is a concept that materializes in the common imagination as a temporary settlement, which is placed within an emergency context lasting a maximum of a few years. From this fallacious idea derives a management and planning of refugee camps focused on the short term, which does not always take into consideration the actual life cycle of refugee camps and the dynamics that inhabit them. Participatory design is an approach that, applied to this context, allows the transformation of the site involving those who live within it in the processes of designing, modifying and adapting structures to develop a sense of ownership over their lives and the place that at that moment means home. In 2021 the Greek government, with the support of the European Commission, opened a facility centre, defined Closed Controlled Access Centre, in Samos. A top-down approach, based on close control by the local authorities, was used for both the design and management of the camp. The paper aims to outline a proposal to implement a participatory approach in the rethinking of the camp's structures and spaces by its inhabitants

Vices and Virtues of Higgs EFTs at Large Energy

We study constraints on new physics from Higgs production at the LHC in the context of an effective field theory (EFT), focusing on Higgs searches in $HV$ ($V=W,Z$) associated production which are particularly sensitive to the high-energy behavior of certain dimension-6 operators. We show that analyses of these searches are generally dominated by a kinematic region where the generic EFT expansion breaks down, and establish under which conditions they can nevertheless be meaningful. For example, constraints from these searches on the Wilson coefficients of operators whose effects grow with energy can be established in scenarios where a particular combination of fermions and the Higgs are composite and strongly coupled: then, bounds from Higgs physics at high energy are complementary to LEP1 and competitive with LEP2.Comment: 21 pages, 5 figure