Articles de revues sur le sujet « Stati tensionali »
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Guo, Lan Hui, Shan Gao et Su Mei Zhang. « Behavior of Rigid Composite Joint under Combination of Bending Moment and Tensional Force ». Advanced Materials Research 163-167 (décembre 2010) : 2247–55. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2247.
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In recent years, the progressive collapse of buildings increases the interest in progressive collapse studies. If a key column fails in structure, the internal force is redistributed by the catenary action of joint to prevent its progressive collapse. The joint connecting to the failed column is under the state of bending moment combined with tensional force and the tensional force would affect the moment-resistance ability and ductility of joint. In this paper, the finite element software ABAQUS is applied to analyze the behavior of composite joints under the state of bending moment combined with tensional force. The effects of rebar ratio, rebar strength, concrete strength, etc., on the behavior of joints are investigated. The results show that high strength steel is suggested to be used in composite joint to improve its bending moment capacity and tensional capacity.
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Boudou, Thomas, Tomas Andersen et Martial Balland. « On the spatiotemporal regulation of cell tensional state ». Experimental Cell Research 378, no 1 (mai 2019) : 113–17. http://dx.doi.org/10.1016/j.yexcr.2019.02.018.
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Tholpady, Sunil S., Toby F. Freyman, Debbie Chachra et Roy C. Ogle. « Tensional Forces Influence Gene Expression and Sutural State of Rat Calvariae In Vitro ». Plastic and Reconstructive Surgery 120, no 3 (septembre 2007) : 601–11. http://dx.doi.org/10.1097/01.prs.0000270284.69632.6b.
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Nikolaev, Alexei, et Vsevolod Nikolaev. « Lithospheric stress state in South America as inferred from tidal triggering of earthquakes ». Geofísica Internacional 35, no 3 (1 juillet 1996) : 329–38. http://dx.doi.org/10.22201/igeof.00167169p.1996.35.3.466.
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Se presenta un modelo del estado de esfuerzo en la litosfera sudamericana, con base en el desgatillamiento de sismos por efecto de las mareas. Se utilizó un catálogo de 23,399 temblores de magnitud M>3.5 y se calculó la diferencia entre el número de temblores que ocurre durante fases opuestas de la marea. Se calcularon los coeficientes de Lode-Nadai, que muestran el estado de esfuerzo tensional a lo largo de la Cordillera, y caótico en el interior del continente.
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Ku, Seung-Jun, Young-Il Chang, Chang-Hoon Chae, Seong-Gon Kim, Young-Wook Park, Youn-Kwan Jung et Je-Yong Choi. « Static tensional forces increase osteogenic gene expression in three-dimensional periodontal ligament cell culture ». BMB Reports 42, no 7 (31 juillet 2009) : 427–32. http://dx.doi.org/10.5483/bmbrep.2009.42.7.427.
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Caiazza, Tommaso. « Una "classe inferiore di stranieri bianchi".Gli italiani e il movimento dei lavoratori a San Francisco ». ITALIA CONTEMPORANEA, no 296 (août 2021) : 201–30. http://dx.doi.org/10.3280/ic296-oa1.
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L'articolo esamina le relazioni tra gli immigrati italiani e il movimento dei lavoratori a San Francisco al principio del Novecento. La "razza" costituisce la lente attraverso cui viene in-dagato il processo di integrazione degli italiani alla luce delle politiche razziste messe in atto dalle strutture sindacali, che ammettevano solo "bianchi" ed escludevano gli immigrati asia-tici. Intrecciando una varietà di fonti (stampa operaia, documentazione delle unioni, dati sta-tistici sulle occupazioni) si rileva come gli italiani, seppur marginalizzati e giudicati inferiori razzialmente, siano stati riconosciuti come "bianchi" e, pertanto, assimilati nel locale movi-mento dei lavoratori. Si sostiene che a favorire ciò sia stata la precoce costruzione di una co-mune identità "caucasica" tra i gruppi europei, modellata in contrapposizione all'immigra-zione asiatica, in grado di far passare in secondo piano le tensioni tra il "vecchio stock" e i "nuovi immigrati", come gli italiani, dominanti in altre città degli Stati Uniti.
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Ong, C. P. « A Scientific Perspective of the Three Harmony Principle of Taijiquan ». Journal of Integrative Medicine 11, no 1 (27 juin 2022) : 12. http://dx.doi.org/10.30564/jim.v11i1.4654.
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The Three Harmony Principle helps to regulate whole-body motion in harmony by balancing and aligning the movements of the body segments. Taijiquan uses the fangsong-relaxtion modality to resolve the switching back and forth of the active muscle forces and the passive tensional forces of tendons, ligaments and fascial tissues. Fangsong induces the modulation of the muscles to resettle in a better state of balance, thus is necessarily a manipulation of the fascial tissues enveloping the muscles, organs and structures. In so doing, fangsong-relaxation cultivates the cognition and sensation of the fascial tensional network, which traditional Taiji theory refers to as Qi. Taijiquan harnesses Qi in the discipline of body motion to balance and align the momenta of the body segments in force transmission. This gives rise to maximal force potential in balance—the force of neijin (internal strength)—in response of application. Crucially, the settling into balance by fangsong functions as a neutral countermovement in the stretch-shorten cycle that primes the muscle-tendon unit in an ever-ready state of action, which endows neijin with the liveliness of response. Secondly, the fangsong manipulation of the fascial tissues serves as a fascial massage and release that provides relief to chronic pain syndrome caused by tenseness of muscles and fascia, a therapy that accrues with the many health benefits of Taijiquan. Lastly, but not least, the attentiveness required in the fangsong process develops into the meditation component of the practice which brings tranquility and the insight of mindfulness. Taijiquan thus bestows the triple gems of neijin, health well-being, and equanimity.
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Sotillo, Belén, María Esther Solana et Paloma Fernández. « Exploring Mechanical Alloying to Produce Doped ZnO ». Materials Physics and Chemistry 1, no 3 (22 mai 2019) : 1. http://dx.doi.org/10.18282/mpc.v1i3.581.
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In this work, a mixture of ZnO and CeO2 powders are subjected to a milling procedure to monitor the mechanical alloying processes. ZnO-CeO2 powders have been milled during 10 to 60 hours, and have been characterized by X-ray diffraction (XRD), UV-Vis absorption, Raman and photoluminescence spectroscopies, in order to study the present phases, the tensional state of material and particle sizes. The evolution of the phases presents with the time of milling, and the possible changes in the lattice parameter will help us to estimate the efficiency of the grinding process for obtaining Ce doped ZnO.
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Celi, Giuseppe, Andrea Ginzburg, Dario Guarascio et Annamaria Simonazzi. « Una Unione divisiva. Una prospettiva centro-periferia della crisi europea ». Il Politico 252, no 2 (19 janvier 2021) : 195–98. http://dx.doi.org/10.4081/ilpolitico.2020.522.
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La storia dell’integrazione europea resta ancora oggi, a sessantatré anni dalla fondazione della Comunità Economica Europea, uno dei temi fondamentali per comprendere l’Unione e i suoi sviluppi politici. Molti dei conflitti, delle tensioni, dei problemi strutturali e delle inefficienze che si riconducono all’Unione Europea, così come anche molti dei successi e delle fortune, sono realmente comprensibili soltanto con una conoscenza della storia delle istituzioni europee e della progressiva integrazione degli Stati Membri.
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Sichting, Freddy, et Nicolai C. Kram. « Phantom material testing indicates that the mechanical properties, geometrical dimensions, and tensional state of tendons affect oscillation-based measurements ». Physiological Measurement 41, no 9 (6 octobre 2020) : 095010. http://dx.doi.org/10.1088/1361-6579/abb4b3.
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Maximov, Y. V., A. V. Ankin et E. A. Vetrova. « The dependence of cutting force on the sectional shape vibrations under mixed machining of nonrigid tubes ». Izvestiya MGTU MAMI 1, no 2 (20 janvier 2007) : 182–86. http://dx.doi.org/10.17816/2074-0530-69694.
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The paper examines the combined method of cutting-deforming machining of quill cylinder type nonrigid parts, which increases productivity, quality of machining and working accuracy. The basic feature of the method is that the machining process is accompanied with tensional and bending oscillations caused by geometrically induced errors in the workpiece cross-section, setting errors and various static and dynamic tuning errors of cutting and deforming tools (for example, the static tuning error of structural elements location of processing unit). On the basis of analysis of expressions for resultant error and oscillation equation the authors obtained formula which determines actual cutting depth and lateral force on the part when cutting. On analyzing the alternation of cross section of tube on the example of single-pass part cutting (with maximum transverse force) it was found that in the process of cutting the cross-section of the tube is deformed by negligible quantity.
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Brittain, Charles. « A Stoic Ethics for Attention (Seneca Letter 56) ». Rhizomata 9, no 2 (30 novembre 2021) : 224–46. http://dx.doi.org/10.1515/rhiz-2021-0013.
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Abstract Seneca’s Letters sketch a theory of attentive action according to which distraction is caused by inconsistent beliefs about values, such that the degree of an agent’s attention to an endorsed action is proportionate to the consistency of her beliefs about value, i. e. her proximity to virtue. The agent’s activity of attentive action is co-ordinated with a state of alertness to her interests, which accordingly triggers switches in attention that sustain the endorsed action in single-minded agents or cause distraction if the new interest is irrelevant to it. Seneca’s theory reflects the older Stoic conception of the tensional mental strength of the virtuous agent, which Chrysippus identified as the causal factor over and above virtue that ensures her successful performance of right action.
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Abrahamsson, T. J. S., et J. H. Sa¨llstro¨m. « A Spinning Finite Beam Element of General Orientation Analyzed With Rayleigh/Timoshenko/Saint-Venant Theory ». Journal of Engineering for Gas Turbines and Power 118, no 1 (1 janvier 1996) : 86–94. http://dx.doi.org/10.1115/1.2816554.
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Linear vibrations are studied for a straight uniform finite beam element of general orientation spinning at a constant angular speed about a fixed axis in the inertial space. The gyroscopic and circulatory matrices and also the geometric stiffness matrix of the beam element are presented. The effect of the centrifugal static axial load on the bending and torsional dynamic stiffnesses is thereby accounted for. The Rayleigh/Timoshenko/Saint-Venant theory is applied, and polynomial shape functions are used in the construction of the deformation fields. Nonzero off-diagonal elements in the gyroscopic and circulatory matrices indicate coupled bending/shearing/torsional/tensional free and forced modes of a generally oriented spinning beam. Two numerical examples demonstrate the use and performance of the beam element.
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Zhu, Zengbao, Longchao Cheng, Rui Xu et Rupeng Zhu. « Impacts of Backlash on Nonlinear Dynamic Characteristic of Encased Differential Planetary Gear Train ». Shock and Vibration 2019 (27 mai 2019) : 1–15. http://dx.doi.org/10.1155/2019/9347925.
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A multifreedom tensional nonlinear dynamic equation of encased differential planetary gear train with multibacklash and time-varying mesh stiffness was developed in the present research. The nonlinear dynamic response was obtained by solving the formulated nonlinear dynamic equation, and the impacts of backlash on dynamic characteristics of the gear train were then analyzed by combining time process diagram, phase diagram, and Poincaré section. The results revealed that bilateral shock in meshing teeth was caused due to smaller backlash, thus causing dramatic changes in meshing force; hence, the gears were found to be in a chaotic state. Further, during stable motion state, no contact between intermeshing teeth with bigger backlash was noticed; thus, they were in a stable quasiperiodic motion state in the absence of teeth exciting force. Therefore, in order to avoid a bilateral shock in gears as well as to maintain gear teeth lubrication, a slightly bigger backlash is required. The backlash change in any transmission stage caused significant impacts on gear force and the motion state of its own stage; however, the impact on gear force of another stage was quite small, whereas the impact on the motion state of another stage was quite large.
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Morales, M. A., J. A. Pérez, M. Del Rio, J. C. Sánchez, J. Casbas et D. Gil. « Propiedades del hormigón reciclado para el uso como soleras de hormigón en pavimentos industriales=Properties of recycled concrete to use as concrete slabs in industrial pavements ». Anales de Edificación 4, no 2 (10 septembre 2018) : 25. http://dx.doi.org/10.20868/ade.2018.3775.
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Resumen El presente estudio analiza el estado tensional de distintas placas delgadas apoyadas sobre terreno elástico empleando modelos de elementos finitos para distintos tipos de hormigones reciclados y de primer uso, distintos valores de las cargas y de las condiciones de apoyo del terreno, concluyendo que las tensiones que se obtienen en hormigones reciclados son aproximadamente un 4,5% menores que en hormigones fabricados con áridos de primer uso, en cualquiera de los casos analizados. Con los datos obtenidos para las tensiones, se han elaborado gráficas de dimensionamiento del espesor mínimo necesario en Estado Límite Último de flexión. Estas gráficas muestran menores espesores necesarios en el caso de hormigones reciclados, si bien las reducciones posibles no superan los 0,5 cm para las cargas analizadas. Otro aspecto a tener en cuenta es que, dado que el proceso de agotamiento por fatiga en el hormigón depende fundamentalmente de la máxima tensión alcanzada en el hormigón respecto de su capacidad resistente y no solo de la oscilación de tensiones, el hormigón reciclado permite alargar la vida útil de la estructura. Abstract The present study analyzes the tensional state of different thin plates supported on elastic terrain using finite element models for different types of recycled and first-use concretes, different values of loads and ground support conditions, concluding that the tensions that are obtained in recycled concretes are approximately 4.5% lower than in concrete made with aggregates of first use, in any of the cases analyzed. With the data obtained for the tensions, graphs of sizing of the minimum thickness necessary in Ultimate Limit State of flexion have been drawn up. These graphs show lower thicknesses required in the case of recycled concretes, although the possible reductions do not exceed 0.5 cm for the loads analyzed. Another aspect to be taken into account is that, given that the fatigue depletion process in concrete depends mainly on the maximum tension reached in the concrete with respect to its resistant capacity and not only the tension oscillation, the recycled concrete allows to extend the useful life of the structure.
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Flick, Uwe. « Qualitative Research - State of the Art ». Social Science Information 41, no 1 (mars 2002) : 5–24. http://dx.doi.org/10.1177/0539018402041001001.
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The background of this article is the observation that the methodological discussions about qualitative research in German-speaking and Anglo-Saxon contexts are quite different. The article gives an overview of the state of the art of qualitative research in terms of its methodological development and its establishment in the broader field of social research. After some brief remarks about the history of the field, the major research perspectives and schools of qualitative research - grounded theory, ethnomethodology, narrative analysis, objective hermeneutics, life-world analysis, ethnography, cultural and gender studies - are outlined against the background of recent developments. The establishment of qualitative research is discussed with reference to the examples of the German and International Sociological Associations (DGS and ISA), to developments in the area of textbooks and handbooks, and to the founding of specialized journals. Methodological trends such as the move to visual and electronic data, triangulation of methods and the hybridization of qualitative procedures are discussed. In conclusion some perspectives are outlined which are expected to become more important in the future of qualitative research or which are seen as demands for further clarification. Beside the use of computers and further clarification on linking qualitative and quantitative research, and the limits and problems of such linkage, further suggestions concerning the ways of presenting appropriate and at the same time compulsory criteria for qualitative research are mentioned. Trends in building schools and developing research pragmatics, on the one hand, and a tendency towards elucidation and mystification of methodological procedures, on the other hand, are identified as tensional fields in methodological discussions in qualitative research. Finally a stronger internationalization in different directions and answering the question of indication are discussed as needs for the future of qualitative research.
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Heinemann, Patrick, Dorina Isopescu et Sebastian George Maxineasa. « Case Studies on Finite Element Modeling of Welded Joints ». Bulletin of the Polytechnic Institute of Iași. Construction. Architecture Section 67, no 2 (1 juin 2021) : 79–94. http://dx.doi.org/10.2478/bipca-2021-0017.
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Abstract Joints made out of tubular steel members are often used in industrial constructions, like offshore, trusses or tree-shaped columns. The joint area is the weakest point in a truss structure. Beside the normal static behaviour many non-linearities due to the geometry or to the welding process have to take into account. Steel hollow sections are often used. Much research was made on welded nodes so far, but mostly it is valid for limited geometries or load cases. A review of the main aspects in designing welded nodes are given. The second part is about a study of two aspects. The first aim is to investigate the influence of the joint angle on the resistance of a T-joint made out of Circular-Hollow-Sections or Squared-Hollow-Sections under a tensional load. To archive the most realistic results, the second aspect, a numerical study on the finite element types and the element shape functions will be made.
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Limas, Pedro, Carlos Trinchet, Pavel Almaguer, Javier Vargas et Lauren Isaza. « Numerical Evaluation of the Tensional-Deformational State of the Blade in the Gamesa G52/850 Wind Turbine During the Action of Extreme Wind ». Journal of Engineering and Applied Sciences 14, no 10 (30 novembre 2019) : 3371–77. http://dx.doi.org/10.36478/jeasci.2019.3371.3377.
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Ablasser, K., R. Gasser, P. Del Nido, B. Pieske et I. Friehs. « Static, but not cyclic tensional forces on the heart increase anti-angiogenic sFlt-1 expression in endothelial cells and inhibit VEGFR-2 activation ». European Heart Journal 34, suppl 1 (2 août 2013) : P5665. http://dx.doi.org/10.1093/eurheartj/eht310.p5665.
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Li, Jinming, Yixin Xu, Miaocao Wang, Fulong Zhu, Jianxiong Hu, Chenzefang Feng, Yuhua Huang, Xiang Zhang, Naiqin Zhao et Chunnian He. « Deformation mechanism of copper reinforced by three-dimensional graphene under torsion and tension ». Modelling and Simulation in Materials Science and Engineering 30, no 2 (6 janvier 2022) : 025004. http://dx.doi.org/10.1088/1361-651x/ac40d2.
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Abstract The mechanical behaviors of uniaxial torsional and tensional copper nanorod embedded with sp2-type hybrid graphene nanosheets (3DG/Cu) were investigated systematically using molecular dynamics methods. During the torsion process, graphene expanded the plastic deformation region of copper, while the plastic deformation in monocrystalline Cu cases was limited to a smaller area. 3DG/Cu responded to the torsion by one more plastic stage when plastic deformation spread along the length after the elastic response. Graphene improved the torsional loading capacity of the composite material, greatly extending the effective response range of the material by distributing the deformation of copper along with the graphene rather than being concentrated at a certain position like monocrystalline Cu. Generally, as the length of the model increased, this enhancement decreased. The copper portion of 3DG/Cu was divided into three areas during uniaxial tensile, a static region, a quasi-static region of the middle portion where the shear and necking occurred, and a dynamic area near the loading end. However, the inside graphene kept continuous until fracture. Furthermore, graphene improved the yield strain of copper by maintaining intact after copper failure. The greater the pre-loaded torsion angle, the smaller the yield strength and Young’s modulus of 3DG/Cu.
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Mendonça, Maria Isabel Lopes de. « A raia de Ribacôa : perspetivas de investigação compreendendo o período de 1762-1960 ». Cem, no 11 (2020) : 127–40. http://dx.doi.org/10.21747/2182109711/cema7.
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: The research about the dialectics of the organization of the settlements in Ribacôa’s ray, comprising the period between 1762 and 1960, arises from the systematization and interpretation of the territory’s architecture in a tensional dialogue with its border condition. The mentioned region (roughly confined to the municipalities of Figueira de Castelo Rodrigo, Almeida and Sabugal) will thus constitute the main aspect of analysis and problematization related with contemporary lands‑ cape modeling, which is coordinated with state actions aimed according the productive and econo‑ mic possibilities of the region. The discourse about the action of several agents over the centuries will recover aspects of the evolu‑ tion of human occupation that constitue a methodological basis for understanding the territorial process. In a perspective of holistic understanding, it will be demonstrated that exploratory incursions inclu‑ ding primary sources and the theoretical field must be complemented by local surveys, namely those showing the human settlements in articulation with its vital space that integrates the water structures, the constructions supporting the military actions as well as the circulation system, the industries and the farms.
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Szuwalski, Krzysztof, et Aneta Ustrzycka. « Mathematical and Numerical Modelling of Large Axisymmetric Creep Strains and Damage ». Applied Mechanics and Materials 784 (août 2015) : 241–48. http://dx.doi.org/10.4028/www.scientific.net/amm.784.241.
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The paper presents a simulation model for the creep process of rotating disks under radial tensional pressure subjected to of body force. The finite strain theory is applied. The material is described by the Norton-Bailey law generalized for true stresses and logarithmic strains. The mathematical model is formulated in form of set of four partial differential equations with respect to radial coordinate and time. Necessary initial and boundary conditions are also given. To make the model complete, the numerical procedure for solving this set is proposed. What is worth noticing the classical FEM is not applicable, because not only geometry, but also loading (body forces) change in time during the creep process. It would demand redefinition of finite elements at each time step. In uniaxial problem similar model was presented in [4], but now it is developed for complex stress state. Possible different formulations of initial and boundary conditions may be found in [5]. The procedure may be useful in problems of optimal design of full disks in [6].
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Park, Y. W., et S. G. Kim. « The static tensional force increases the expression of vascular endothelial growth factor and alkaline phosphatase in the three-dimensional periodontal ligament cells culture system ». International Journal of Oral and Maxillofacial Surgery 38, no 5 (mai 2009) : 525. http://dx.doi.org/10.1016/j.ijom.2009.03.456.
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Fonzi, Paolo. « "Liquidare e dimenticare il passato". I rapporti italo-greci 1943-1948 ». ITALIA CONTEMPORANEA, no 266 (septembre 2012) : 7–42. http://dx.doi.org/10.3280/ic2012-266001.
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L'articolo ripercorre la storia della ripresa dei rapporti diplomatici tra Italia e Grecia dopo l'interruzione causata dall'attacco italiano dell'ottobre 1940. La normalizzazione iniziň nel settembre del 1943, quando la Grecia dovette elaborare una nuova politica verso l'Italia che da nemico era diventata alleato. Essa si concluse nel novembre del 1948, quando fu firmato un Trattato di amicizia, commercio e navigazione tra i due stati. L'autore analizza diversi elementi e fattori di questa vicenda: le strategie d'inserimento dei due stati nel nuovo panorama internazionale; la ricerca di consenso interno da parte dei governi; i sentimenti della popolazione; l'immagine degli italiani diffusa in Grecia, che inizialmente era estremamente negativa; la memoria della guerra costruita dai governi greci del dopoguerra, che si cristallizzň nell'Anniversario del No dai forti accenti anti-italiani; il problema della punizione dei crimini di guerra commessi dagli italiani in Grecia. Tutti questi elementi concorsero nel determinare la politica dei governi greci verso l'Italia. Tra tutti l'autore sottolinea l'importanza del nazionalismo e delle rivendicazioni territoriali, che furono utilizzate dai governi greci del dopoguerra come fattore di stabilizzazione interna e valvola di sfogo delle tensioni sociali.
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Gerbasi, Giampaolo. « Il primato del diritto dell'Unione e la questione dei controlimiti : minaccia disgregativa o spinta integrativa nel processo di costituzionalizzazione dell'Unione europea ». CITTADINANZA EUROPEA (LA), no 1 (août 2020) : 87–132. http://dx.doi.org/10.3280/ceu2020-001004.
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Con l'entrata in vigore del Trattato di Lisbona e della Carta dei diritti fondamentali dell'Unione europea, da più parti è stata sottolineata l'obsolescenza del tema dei limiti costi-tuzionali al primato del diritto UE. Si assiste invece ad un ‘ritorno di attualità' della dottrina dei controlimiti e delle tensioni irrisolte che ruotano intorno alla tutela dei diritti fondamentali nel pluralismo costituzionale europeo. In tale contesto, il presente contributo mira a verifica-re se i crescenti conflitti interordinamentali costituiscano una minaccia per la tenuta dell'edificio europeo oppure se possano produrre anche una spinta propulsiva nel processo di costituzionalizzazione dell'Unione. A tal fine, saranno esaminati, da un lato, le tendenze osservabili nell'approccio (oppositivo vs. conciliativo) delle Corti costituzionali e della Corte di giustizia alle disarmonie nelle dinamiche relazioni tra ordinamenti, dall'altro, le eteroge-nee indicazioni emergenti dall'approccio orientato allo scontro o al confronto.
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Seferiades, Seraphim. « POLARIZZAZIONE PARTITICA E NON-PROPORZIONALITÀ ELETTORALE IN GRECIA ». Italian Political Science Review/Rivista Italiana di Scienza Politica 16, no 3 (décembre 1986) : 401–37. http://dx.doi.org/10.1017/s0048840200016166.
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IntroduzioneQuesto saggio si propone di esaminare l'evoluzione del sistema partitico greco nel dopoguerra. Anche se rappresentano solo un subsistema del sistema politico, i partiti assolvono indubbiamente una cruciale funzione di intermediazione fra società e governo e sono, dunque, estremamente importanti per comprendere il rendimento del sistema nel suo complesso. Cionondimeno, fino ad epoca molto recente essi sono stati quasi del tutto trascurati dalla moderna storiografia greca; e non si rischia di esagerare affermando che a tutt'oggi non esiste alcuna ricerca sul sistema partitico in quanto tale, cioè visto come un insieme integrato di attori le cui interazioni concrete e tipizzate sono in grado di influire su altri ambiti, o altri subsistemi, della polity. Se non proprio ignorati del tutto, i partiti sono stati abitualmente confinati in un ruolo reattivo e in nessun caso considerati capaci di strutturare le tensioni sociali. Da questo punto di vista, la Grecia si può considerare un esempio per antonomasia di ciò che Sartori ha chiamato « riduzionismo sociologico », ed è appunto contro questa tendenza che si rivolge il presente lavoro. D'altro canto, con ciò non intendo naturalmente sostenere che i partiti abbiano il potere di creare dal nulla e introdurre nella società civile conflitti non preesistenti nel suo seno. Ma, certo, la natura della competizione interpartitica come tale è un fattore che influisce sull'andamento di questi conflitti e può contribuire ad acuirli o a smorzarli.
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Ulloa, Luisa Severino, Fabio Perissinotto, Ilaria Rago, Andrea Goldoni, Rosaria Santoro, Maurizio Pesce, Loredana Casalis et Denis Scaini. « Carbon Nanotubes Substrates Alleviate Pro-Calcific Evolution in Porcine Valve Interstitial Cells ». Nanomaterials 11, no 10 (15 octobre 2021) : 2724. http://dx.doi.org/10.3390/nano11102724.
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The quest for surfaces able to interface cells and modulate their functionality has raised, in recent years, the development of biomaterials endowed with nanocues capable of mimicking the natural extracellular matrix (ECM), especially for tissue regeneration purposes. In this context, carbon nanotubes (CNTs) are optimal candidates, showing dimensions and a morphology comparable to fibril ECM constituents. Moreover, when immobilized onto surfaces, they demonstrated outstanding cytocompatibility and ease of chemical modification with ad hoc functionalities. In this study, we interface porcine aortic valve interstitial cells (pVICs) to multi-walled carbon nanotube (MWNT) carpets, investigating the impact of surface nano-morphology on cell properties. The results obtained indicate that CNTs significantly affect cell behavior in terms of cell morphology, cytoskeleton organization, and mechanical properties. We discovered that CNT carpets appear to maintain interfaced pVICs in a sort of “quiescent state”, hampering cell activation into a myofibroblasts-like phenotype morphology, a cellular evolution prodromal to Calcific Aortic Valve Disease (CAVD) and characterized by valve interstitial tissue stiffening. We found that this phenomenon is linked to CNTs’ ability to alter cell tensional homeostasis, interacting with cell plasma membranes, stabilizing focal adhesions and enabling a better strain distribution within cells. Our discovery contributes to shedding new light on the ECM contribution in modulating cell behavior and will open the door to new criteria for designing nanostructured scaffolds to drive cell functionality for tissue engineering applications.
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Scarano, Antonio, Calogero Bugea, Lucia Leo, Pablo Santos de Oliveira et Felice Lorusso. « Autologous Platelet Gel (APG) : A Preliminary Evaluation of the Mechanical Properties after Activation with Autologous Thrombin and Calcium Chloride ». Materials 14, no 14 (14 juillet 2021) : 3941. http://dx.doi.org/10.3390/ma14143941.
Texte intégralRésumé :
The tensional and mechanical behavior of regenerative components, grafts, and blood clots represent an essential condition for the success of bone regeneration protocols. Autologous platelet growth factors represent a useful protocol to enhance the soft and hard tissue healing in several fields of medicine and craniofacial surgery. Different protocols for blood concentrates with and without activation have been proposed in literature. The aim of the present study was to investigate in vitro the mechanical properties of autologous platelet gel (APG) with autologous thrombin and calcium chloride. Materials and Methods: A total of 20 APG samples were evaluated; 10 samples were activated by autologous thrombin and calcium chloride (Group I) and 10 samples were non-activated (Group II). The tensile strength and modulus of elasticity were calculated through a static loading test (Lloyd 30 K, Lloyd Instruments Ltd., Segensworth, UK). Results: Group I (activated) reported a tensile strength of 373.5 ± 14.3 MPa, while Group II showed a significantly lower value of 360.5 ± 16.3 MPa (p < 0.05). The Young’s modulus was 145.3 ± 10.4 MPa for Group I and 140.3 ± 15.3 MPa for Group II (p < 0.05). Conclusions: The effectiveness of the present in vitro simulation showed that the APG activation protocol is able to increase the mechanical characteristics of the blood derivates and could be clinically useful to enhance regenerative procedures.
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Yin, Zhiqiang, Zhiyu Chen, Jucai Chang, Zuxiang Hu, Haifeng Ma et Ruimin Feng. « Crack Initiation Characteristics of Gas-Containing Coal under Gas Pressures ». Geofluids 2019 (7 février 2019) : 1–12. http://dx.doi.org/10.1155/2019/5387907.
Texte intégralRésumé :
In deep coal mines, coal before the working face is subjected to coupled high mining-induced stress and gas pressure. Such condition may facilitate crack formation and propagation in the coal seam, leading to serious coal and gas disasters. In this study, the mechanical properties (i.e., uniaxial compressive strength, tensile strength, and fracture toughness) of gas-containing coal with four levels of initial gas pressure (i.e., 0.0, 0.5, 1.0, and 1.5 MPa) were investigated by uniaxial compression, Brazilian disc, and notched semicircular bending loading test. A newly developed gas-sealing device and an RMT-150 rock mechanics testing machine were used. Fracture modes under different initial gas pressures were also determined. A theoretical method of fracture mechanics was used to analyze crack initiation characteristics under gas adsorption state. Results show that the uniaxial compressive strength, tensile strength, and fracture toughness of gas-containing coal decreased with increasing initial gas pressure. The tensional fracture occurred in gas-containing coal under uniaxial compressive loading with high gas pressure. Cracks in gas-containing coal propagated under small external loads due to the increase in effective stress of crack tip and decrease in cracking strength. This study provided evidence for modifications of the support design of working face in deep coal mines. Furthermore, the correlations between fracture toughness, compressive strength, and tensile strength of gas-containing coal were investigated.
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Sbiglio, Maria Gabriela, Lara Giambalvo, Alessandra Verri, Barbara Bianchini et Velia Bianchi Ranci. « Gli effetti del presente ». GRUPPI, no 2 (octobre 2021) : 178–93. http://dx.doi.org/10.3280/gruoa2-2020oa12590.
Texte intégralRésumé :
Il presente scritto è frutto del lavoro di un gruppo di colleghe che si sono riunite, su iniziativa di una di loro, Maria Gabriela Sbiglio, per riflettere sugli effetti della pandemia nella clinica contemporanea. La cornice di questa riflessione è stata costituita dal pensiero di Janine Puget, attraverso la lettura e l'ascolto condiviso di materiale proveniente dagli ultimi interventi in diversi convegni internazionali e seminari cui Puget ha partecipato nel periodo post pandemia. Gli autori sottolineano la situazione dell'incontro con l'alterità che crea una nuova storia, dei nuovi significati e un nuovo inconscio. Nella temporalità del presente e dall'incontro con le differenze si attivano delle "tensioni" e dei 2confini". Le differenze coesistono come "mondi paralleli", ognuna con il proprio significato, e possono produrre aperture e trasformazioni, a partire da quello che è possibile "fare insieme". Il processo del gruppo si è poi intrecciato a una rielaborazione svolta dai singoli partecipanti su alcuni dei concetti principali del pensiero di Puget, integrando anche il materiale dell'intervista da lei rilasciata alla rivista Gruppi del 2019 e qui pubblicata.
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Ferlito, Rosaria, et Rosario Faraci. « Sostenibilità ; e sistemi di Corporate Governance delle società ; benefit : il ». CORPORATE GOVERNANCE AND RESEARCH & ; DEVELOPMENT STUDIES, no 2 (janvier 2022) : 45–64. http://dx.doi.org/10.3280/cgrds2-2021oa12550.
Texte intégralRésumé :
Negli ultimi anni si è assistito alla crescita del numero di organizzazioni ibride, imprese caratterizzate da più domini funzionali e dalla coesistenza di sistemi di valori differenti. Le stesse presentano un modello di corporate governance allargato che richiede l'assunzione di responsabilità nei confronti non solo della proprietà, ma anche verso tutti gli stakeholder. L'obiettivo del presente lavoro si sostanzia nell'esplorare i tre aspetti di governance caratterizzanti un'impresa ibrida con scopo di lucro ossia il bilanciamento di logiche differenti, il monitoraggio delle azioni e dei risultati e la comunicazione esterna, al fine di identificare le azioni da attuare per risolvere le tensioni manageriali insite in tale forma organizzativa. Per far ciò sono state prese in analisi le società benefit che nell'esercizio della propria attività economica oltre allo scopo del profitto perseguono una o più finalità di beneficio comune. Le evidenze empiriche derivanti dall'analisi del caso studio riguardante l'impresa italiana Illycaffè permettono di apportare nuova conoscenza nella letteratura sulla corporate governance e sul sustainability management.
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Affatato, Saverio, Massimiliano Merola et Alessandro Ruggiero. « Development of a Novel in Silico Model to Investigate the Influence of Radial Clearance on the Acetabular Cup Contact Pressure in Hip Implants ». Materials 11, no 8 (25 juillet 2018) : 1282. http://dx.doi.org/10.3390/ma11081282.
Texte intégralRésumé :
A hip joint replacement is considered one of the most successful orthopedic surgical procedures although it involves challenges that must be overcome. The patient group undergoing total hip arthroplasty now includes younger and more active patients who require a broad range of motion and a longer service lifetime of the implant. The current replacement joint results are not fully satisfactory for these patients’ demands. As particle release is one of the main issues, pre-clinical experimental wear testing of total hip replacement components is an invaluable tool for evaluating new implant designs and materials. The aim of the study was to investigate the cup tensional state by varying the clearance between head and cup. For doing this we use a novel hard-on-soft finite element model with kinematic and dynamic conditions calculated from a musculoskeletal multibody model during the gait. Four different usual radial clearances were considered, ranging from 0 to 0.5 mm. The results showed that radial clearance plays a key role in acetabular cup stress-strain during the gait, showing from the 0 value to the highest, 0.5, a difference of 44% and 35% in terms of maximum pressure and deformation, respectively. Moreover, the presented model could be usefully exploited for complete elastohydrodynamic synovial lubrication modelling of the joint, with the aim of moving towards an increasingly realistic total hip arthroplasty in silico wear assessment accounting for differences in radial clearances.
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Klymenko, I. V. « THE IMPACT OF VOLUNTEERING AIMED AT HELPING THE COMBATANTS AND VICTIMS OF THE WAR, ON VOLUNTEERS’ FAMILY WELL-BEING ». Ukrainian Psychological Journal, no 2 (14) (2020) : 100–118. http://dx.doi.org/10.17721/upj.2020.2(14).5.
Texte intégralRésumé :
In the article, we have analyzed the information that concerns the potential impact of volunteer activity on the psycho-emotional state and the family well-being of volunteers, in particular those who carry out their activities in extreme conditions. We have analyzed the peculiarities of the activities of Ukrainian volunteers who assisted the combatants and victims of the war during the most fierce military confrontation in the East of Ukraine in 2014– 2016 and found that their activities could have a negative impact on the socio-psychological climate and the functioning of their families due to prolonged, tensional, emotionally intense and sometimes risky nature of activities. We have researched the peculiarities of matrimonial relationship and some indicators of family well-being (level of satisfaction with marriage and marriage partner, peculiarities of communication, readiness for interaction, level of mutual respect and emotional attraction) in the families of active participants of the volunteer movement, who directed their efforts to assist the military and civilian during a period of active military confrontation. We have analyzed the correlation between the family well-being of volunteers and the peculiarities of their activities. Particular attention was paid to the analysis of the specifics of activities and relationships with marital partners for volunteers whose families eventually have broken up (every fifth of studied participants have experienced a divorce during active engagement in volunteering). The indicators of the psycho-emotional status of volunteers (fixation and somatization of anxiety, depression) were also analyzed. We have identified a number of factors that can negatively affect the family well-being and the psycho-emotional state of volunteers who operate in conditions of military confrontation, in particular the intensity and duration of volunteering activity, significant personal responsibility, high emotional involvement, lack of support from family members.
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De Mori, Barbara. « Il moral distress dalla medicina umana alla medicina veterinaria : un’analisi comparativa ». Medicina e Morale 68, no 3 (15 octobre 2019) : 265–80. http://dx.doi.org/10.4081/mem.2019.586.
Texte intégralRésumé :
Gli studi sul disagio professionale nell’ambito delle professioni di aiuto sanitarie sono in continua crescita. Questi studi hanno identificato, tra le altre cose, diversi disturbi e disagi di natura squisitamente etica, come il moral distress, la cui diagnosi e cura rappresentano oggi un impegno di grande rilievo. Tuttavia, nell’ambito delle professioni d’aiuto che si occupano di animali, come quella del medico veterinario, difficilmente questi studi sono stati approfonditi, con ripercussioni anche gravi sull’esercizio professionale. In generale, infatti, la società fatica a comprendere quanto possa essere difficile per chi lavora con gli animali gestire i conflitti etici che si creano tra le esigenze professionali, le esigenze degli animali e le richieste di chi è proprietario o, comunque, referente per l’animale. Il moral distress è stato riconosciuto solo di recente in medicina veterinaria ed è provocato, come nell’ambito della medicina umana, dall’incapacità di trovare un accordo tra la propria vocazione e le tensioni morali che l’esercizio della professione procura ogni giorno. In questo contributo, attraverso una comparazione con gli studi realizzati nell’ambito delle professioni di aiuto sanitarie in medicina umana, viene esplorata la geografia morale del moral distress nel contesto della professione medico veterinaria, con uno sguardo alle specifiche problematiche etiche che sono coinvolte nella relazione triadica tra medico, paziente animale e proprietario.
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Valsecchi, Giulia. « Oltre queste mura (in)visibili : memoria, rivoluzione e straniamento nella poesia femminile irano-americana ». STORIA URBANA, no 167 (mai 2021) : 63–89. http://dx.doi.org/10.3280/su2020-167005.
Texte intégralRésumé :
L'esperienza delle migrazioni riflette antiche tensioni e condiziona rappresentazioni identitarie molteplici. Il caso della diaspora iraniana e caratterizzato, in particolare, da flussi diretti in Occidente prima e dopo lo scoppio della Rivoluzione nel 1979. In concomitanza con gli eventi dell'11 settembre 2001, tali esodi sono accompagnati da cronache femminili di prigionia e memoir incentrati su restrizioni e prassi di confinamento di genere nel contesto della Repubblica Islamica. A quarant'anni dallo spartiacque storico e traumatico della Rivoluzione Iraniana, e obiettivo di questo contributo accantonare la fissazione occidentale sul velo islamico e le narrazioni imperniate su ritratti femminili di segregazione, per prendere in esame una selezione di poesie a firma di tre autrici irano-americane - Laleh Khalili, Aphrodite Desiree Navab e Persis M. Karim - appartenenti a diverse generazioni di espatriati, nonche distinte per carriere professionali. I componimenti verranno analizzati per mettere in luce una dimensione piu sottile e vulnerabile di riscrittura del se incentrata sugli sdoppiamenti di simbologie, memorie e retaggi culturali connessi a motivi di perdita, straniamento e "stati del tra". Le poesie saranno lette, infine, come spazi di riconfigurazione di un discorso sul passato e di drammatizzazione del rapporto tra un se che (re)immagina e un'identita diasporica sempre piu plurale.
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Alsoud, Tariq Jameel. « Torn between Determinism and Freewill : Self-alienation and Hiding of Identity in Barbery’s The Elegance of the Hedgehog ». World Journal of English Language 12, no 8 (26 septembre 2022) : 28. http://dx.doi.org/10.5430/wjel.v12n8p28.
Texte intégralRésumé :
This essay explores the influence of discourses of determinism and free will on the major heroines’ decisions and behavior when trying to comprehend and apply these philosophies to themselves. The conflicting ideologies of the philosophers create a state of confusion, which in turn has led to the decisions of self-isolation and hiding the real identities to avoid a possible clash with members of the other social classes. The major heroines, Renée and Paloma, hide their intelligence as well because of their firm conviction in the futility of cultural discussions with narrow-minded people who believe in restrictions on social classes boundaries. Therefore, the essay investigates how Barbery addresses both of the philosophical ideologies and trends that control and shape the heroines’ behavior and reactions. It also highlights the influence of these phenomenological philosophies on Renée’s struggle and suffering, which eventually lead to the dualism of her identity and patterns of tensional reactions and ambivalence because she does not understand these theories deeply. The harmonious and amicable relationship between Renée and Paloma who belong to different social classes indicates the author’s hope for a new generation who renounces disagreement and class prejudice; the proximity between them also undermines tools of determinism and discourses of social antagonism among the educated. Finally, the novel manifests itself as an irony of a woman in her fifties who rediscovers her femininity and reprioritizes her needs after years of displacement and self-concealment, and as a paradox for a precocious preteen girl who acts like adults.
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Luciano, Marine, Marie Versaevel, Eléonore Vercruysse, Anthony Procès, Yohalie Kalukula, Alexandre Remson, Amandine Deridoux et Sylvain Gabriele. « Appreciating the role of cell shape changes in the mechanobiology of epithelial tissues ». Biophysics Reviews 3, no 1 (mars 2022) : 011305. http://dx.doi.org/10.1063/5.0074317.
Texte intégralRésumé :
The wide range of epithelial cell shapes reveals the complexity and diversity of the intracellular mechanisms that serve to construct their morphology and regulate their functions. Using mechanosensitive steps, epithelial cells can sense a variety of different mechanochemical stimuli and adapt their behavior by reshaping their morphology. These changes of cell shape rely on a structural reorganization in space and time that generates modifications of the tensional state and activates biochemical cascades. Recent studies have started to unveil how the cell shape maintenance is involved in mechanical homeostatic tasks to sustain epithelial tissue folding, identity, and self-renewal. Here, we review relevant works that integrated mechanobiology to elucidate some of the core principles of how cell shape may be conveyed into spatial information to guide collective processes such as epithelial morphogenesis. Among many other parameters, we show that the regulation of the cell shape can be understood as the result of the interplay between two counteracting mechanisms: actomyosin contractility and intercellular adhesions, and that both do not act independently but are functionally integrated to operate on molecular, cellular, and tissue scales. We highlight the role of cadherin-based adhesions in force-sensing and mechanotransduction, and we report recent developments that exploit physics of liquid crystals to connect cell shape changes to orientational order in cell aggregates. Finally, we emphasize that the further intermingling of different disciplines to develop new mechanobiology assays will lead the way toward a unified picture of the contribution of cell shape to the pathophysiological behavior of epithelial tissues.
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Osinski, Gordon R., et Ludovic Ferrière. « Shatter cones : (Mis)understood ? » Science Advances 2, no 8 (août 2016) : e1600616. http://dx.doi.org/10.1126/sciadv.1600616.
Texte intégralRésumé :
Meteorite impact craters are one of the most common geological features in the solar system. An impact event is a near-instantaneous process that releases a huge amount of energy over a very small region on a planetary surface. This results in characteristic changes in the target rocks, from vaporization and melting to solid-state effects, such as fracturing and shock metamorphism. Shatter cones are distinctive striated conical fractures that are considered unequivocal evidence of impact events. They are one of the most used and trusted shock-metamorphic effects for the recognition of meteorite impact structures. Despite this, there is still considerable debate regarding their formation. We show that shatter cones are present in several stratigraphic settings within and around impact structures. Together with the occurrence of complete and “double” cones, our observations are most consistent with shatter cone formation due to tensional stresses generated by scattering of the shock wave due to heterogeneities in the rock. On the basis of field mapping, we derive the relationshipDsc= 0.4Da, whereDscis the maximum spatial extent of in situ shatter cones, andDais the apparent crater diameter. This provides an important, new, more accurate method to estimate the apparent diameter of eroded complex craters on Earth. We have reestimated the diameter of eight well-known impact craters as part of this study. Finally, we suggest that shatter cones may reduce the strength of the target, thus aiding crater collapse, and that their distribution in central uplifts also records the obliquity of impact.
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Pasquino, Gianfranco. « Il Modello Westminster ». Italian Political Science Review/Rivista Italiana di Scienza Politica 32, no 3 (décembre 2002) : 553–67. http://dx.doi.org/10.1017/s0048840200030409.
Texte intégralRésumé :
L'espressione «Modello Westminster» è stata variamente utilizzata negli anni ruggenti delle (non)riforme istituzionali in Italia. La quantità e la qualità delle imprecisioni nelle caratteristiche attribuite ad un modello inevitabilmente quasi ignoto in Italia sono state e rimangono notevoli. Al di là della semplice manipolazione politica, le imprecisioni non possono stupire. Da un lato, infatti, non esiste praticamente nessuno studio recente in italiano dedicato al sistema politico della Gran Bretagna (fa ottima eccezione la ricerca di Massari (1994)), mentre, al contrario, sono moltissime le analisi e le ricerche opera degli studiosi inglesi e americani (nessuna delle quali tradotte in italiano). Dall'altro, il sistema politico inglese viene considerato poco interessante, poco problematico e, fra alti e bassi, poco comparabile con gli altri sistemi politici né, tanto meno, con quello italiano. Ricorrendo ad un'espressione spesso utilizzata in Spagna per spiegare i conflitti, le tensioni e la confusione della politica prima del ritorno alla democrazia: «non siamo inglesi». Qualcuno potrebbe credere che esista un solo sistema politico «eccezionale», per la sua storia, per la sua cultura politica, per la sua società multietnica, per le sue istituzioni, vale a dire gli Stati Uniti d'America. Invece, a ben guardare, se un sistema politico merita la qualifica di eccezionale, cioè che fa eccezione rispetto, ad esempio, alle democrazie parlamentari, che nella sua configurazione specifica non si ritrova da nessun'altra parte che, di conseguenza, è difficilmente comparabile e ancor più difficilmente imitabile, è proprio il sistema politico della Gran Bretagna. Ciascuna delle componenti del sistema politico inglese (legge elettorale, sistema bipartitico, strutturazione del parlamento, governo del Primo ministro) può trovarsi, singolarmente presa e considerata, in qualche altro sistema politico, in particolare, nei sistemi politici che chiamerò della diaspora anglosassone: Australia, Canada, Nuova Zelanda. Nessuno di questi sistemi presenta, però, quel complesso di interazioni che caratterizza il sistema politico inglese e che è, in buona sostanza, unico. D'altronde, a riprova di quanto ho appena sostenuto, nessuno dei volumi in esame, scritti da eminenti specialisti, che pure conoscono molto bene anche altri sistemi politici, si affida ad una comparazione per spiegare né la dinamica delle istituzioni, in particolare, il governo del Primo Ministro, e dell'elettorato inglese, né il ruolo mutevole del Parlamento e dei parlamentari (anche se Russell (2000) va proprio alla ricerca di insegnamenti comparati per capire in quale direzione e con quali modalità debba essere riformata la Camera dei Lords). Cionostante, ciascuno di questi libri è, comunque, di per sé molto interessante e molto istruttivo non soltanto per le analisi specifiche che contiene, ma anche perché consente di riflettere in generale sulla trasformazione della politica, sulla sua situazione attuale in Gran Bretagna e sul suo futuro con riferimento sia al modello Westminster sia, nonostante le reali e profonde differenze, alle altre democrazie parlamentari.
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Gómez, J. L., K. Klein et G. Montiel. « Estudio de los daños y refuerzos necesarios para la recuperación del techo de la iglesia de Salsipuedes-Córdoba-Argentina ». Revista ALCONPAT 4, no 3 (30 septembre 2014) : 182–91. http://dx.doi.org/10.21041/ra.v4i3.68.
Texte intégralRésumé :
RESUMENLa Iglesia de Salsipuedes en la Provincia de Córdoba fue construida en el año 1875 y su techo está conformado por una estructura de madera, vigas reticulada y correas sobre las cuales se apoyan bovedillas cerámicas, capa de mortero y tejas musleras. La Iglesia está inhabilitada por precaución debido a la aparición de fisuras en barras del reticulado y desprendimiento de trozos de mampostería en las cercanías del apoyo de las vigas principales. En este trabajo se estudia el estado tensional de las barras del reticulado y la materialización del apoyo de las vigas principales en los muros de mampostería.Constatado el alto valor de las tensiones de trabajo de las barras con manifestaciones patológicas, como así también el inadecuado sistema de apoyo en la mampostería, se proyectan los refuerzos necesarios para lograr un funcionamiento de la estructura con un grado de seguridad adecuado.Palabras clave: estructuras; madera; patología; patrimonio.ABSTRACTSalsipuedes The Church of the Province of Cordoba was built in 1875 and its roof is formed by a wooden structure, reticulate beams and straps which support ceramic arches tile mortar layer and tiling LegguardsThe Church is disabled as a precaution due to the appearance of cracks in the grid bars and breaking away of pieces of masonry near the support of the main beams. In this work we study the stress state of the grid bars and support the realization of the main beams in the masonry walls.Confirmed the high value of the working stresses of the bars with pathological manifestations, as well as inadequate support system in the masonry, projecting reinforcements necessary for safe operation of the structure with a degree of security.Keywords: Wooden structures; pathology; patrimony.
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Becker, Rotraud. « Das Präzedenzrecht des Praefectus Urbis ». Quellen und Forschungen aus italienischen Archiven und Bibliotheken 97, no 1 (20 décembre 2017) : 175–236. http://dx.doi.org/10.1515/qfiab-2017-0011.
Texte intégralRésumé :
Riassunto Nel 1631 papa Urbano VIII conferi al suo nipote Taddeo Barberini il titolo di Praefectus Urbis, di cui erano stati insigniti a partire dal 1435 anche altri nipoti secolari dei papi, elevando percio lui e la sua famiglia al rango principesco. Come segno esteriore della sua posizione di rilievo egli avrebbe dovuto occupare, nel cerimoniale pontificio, il primo posto tra i dignitari secolari, ottenendo in tal modo la precedenza sui rappresentanti delle potenze a Roma. La disposizione provoco l’opposizione nella maggior parte dei principi che ordinarono ai loro diplomatici di non partecipare piu alle cerimonie papali, e in particolare alle processioni solenni e le messe celebrate nella Cappella Sistina. Una via per imporre il nuovo ordine gerarchico sarebbe potuta essere quella di far leva sull’imperatore, il quale si trovava in serie difficolta a causa delle vittorie svedesi, per convincerlo a chiedere al suo ambasciatore di dare la precedenza al prefetto urbano. Se ci si fosse riusciti, tutti gli altri rappresentanti diplomatici sarebbero dovuti adeguarsi. A lungo la casata Barberini tento di indurre Ferdinando II a fare questo passo, ricorrendo all’aiuto dei nunzi, a lettere lusinghiere, promesse, doni dissimulati, all’azione persuasiva di consiglieri imperiali e parenti, ma fin dall’inizio la corte imperiale era decisa di non agire senza prima accordarsi con la Francia e la Spagna. Pertanto il progetto era destinato al fallimento, perche la resistenza francese era scontata e ben nota; si evito pero, sulla base di alterne motivazioni, di dare una risposta negativa definitiva. Dai rapporti dei nunzi emerge inoltre che Ferdinando II, pur non volendo accettare un cerimoniale pontificio in cui i rappresentanti dell’imperatore e dell’Impero sarebbero stati retrocessi, si mostrava comunque attento a non inasprire le tensioni gia esistenti. Si intendeva dunque risolvere il problema rinviando, anzi astenendosi consapevolmente da ogni decisione, ma tale atteggiamento provoco ulteriori malumori e porto alla brusca fine della carriera di un nunzio. E, soprattutto, fini a danneggiare la reputazione del papato anche nei territori cattolici dell’Impero.
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Becker, Rotraud. « Das Präzedenzrecht des Praefectus Urbis ». Quellen und Forschungen aus italienischen Archiven und Bibliotheken 97, no 1 (5 mars 2018) : 175–236. http://dx.doi.org/10.1515/qufiab-2017-0011.
Texte intégralRésumé :
Riassunto Nel 1631 papa Urbano VIII conferì al suo nipote Taddeo Barberini il titolo di Praefectus Urbis, di cui erano stati insigniti a partire dal 1435 anche altri nipoti secolari dei papi, elevando perciò lui e la sua famiglia al rango principesco. Come segno esteriore della sua posizione di rilievo egli avrebbe dovuto occupare, nel cerimoniale pontificio, il primo posto tra i dignitari secolari, ottenendo in tal modo la precedenza sui rappresentanti delle potenze a Roma. La disposizione provocò l’opposizione nella maggior parte dei principi che ordinarono ai loro diplomatici di non partecipare più alle cerimonie papali, e in particolare alle processioni solenni e le messe celebrate nella Cappella Sistina. Una via per imporre il nuovo ordine gerarchico sarebbe potuta essere quella di far leva sull’imperatore, il quale si trovava in serie difficoltà a causa delle vittorie svedesi, per convincerlo a chiedere al suo ambasciatore di dare la precedenza al prefetto urbano. Se ci si fosse riusciti, tutti gli altri rappresentanti diplomatici sarebbero dovuti adeguarsi. A lungo la casata Barberini tentò di indurre Ferdinando II a fare questo passo, ricorrendo all’aiuto dei nunzi, a lettere lusinghiere, promesse, doni dissimulati, all’azione persuasiva di consiglieri imperiali e parenti, ma fin dall’inizio la corte imperiale era decisa di non agire senza prima accordarsi con la Francia e la Spagna. Pertanto il progetto era destinato al fallimento, perché la resistenza francese era scontata e ben nota; si evitò però, sulla base di alterne motivazioni, di dare una risposta negativa definitiva. Dai rapporti dei nunzi emerge inoltre che Ferdinando II, pur non volendo accettare un cerimoniale pontificio in cui i rappresentanti dell’imperatore e dell’Impero sarebbero stati retrocessi, si mostrava comunque attento a non inasprire le tensioni già esistenti. Si intendeva dunque risolvere il problema rinviando, anzi astenendosi consapevolmente da ogni decisione, ma tale atteggiamento provocò ulteriori malumori e portò alla brusca fine della carriera di un nunzio. E, soprattutto, finì a danneggiare la reputazione del papato anche nei territori cattolici dell’Impero.
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Över, Semir, Süha Özden, Esra Kalkan Ertan, Fatih Turhan, Zeynep Coşkun et Ali Pınar. « 20 July 2017 Bodrum-Kos Earthquake (Mw:6.6) in southwestern Anatolia, Turkey ». Earth Sciences Research Journal 25, no 3 (27 octobre 2021) : 309–21. http://dx.doi.org/10.15446/esrj.v25n3.87080.
Texte intégralRésumé :
In the Aegean Sea, the western part of Gökova Gulf, Kos and Bodrum were struck by a 6.6 (Mw) earthquake on July 20, 2017. The fault plane solution for the main shock shows an E-W striking normal type fault with approximately N-S (N4°E) tensional axis (T-axis). Fault plane solutions of 33 aftershocks show two groups of normal type fault with E-W and NE-SW to ENE-WSW orientations. The inversion of the focal mechanisms of the aftershocks yields two different normal faulting stress regimes: one is characterized by an approximately N-S (N5°E) σ3 axis (minimum horizontal stress axis). This extension is obtained from 13 focal mechanisms of aftershocks with approximately E-W direction. The other is characterized by approximately NW-SE (N330°E) σ3 axis. The latter is calculated from 21 seismic faults of aftershocks with approximately NE-SW direction. These aftershocks occurred on relatively small-scale faults that were directed from NE-SW to ENE-WSW, and possibly contributed to expansion of the basin in the west. The 24 focal mechanisms of earthquakes which occurred since 1933 in and around Gökova Basin are introduced into the inversion analysis to obtain the stress state effective in a wider region. The inversion yields an extensional stress regime characterized by an approximately N-S (N355°E) σ3 axis. The E-W directional metric faults, measured in the central part of Gökova Fault Zone bordering the Gökova Gulf in the north, also indicate N-S extension. The NE-SW extension obtained from NE-SW aftershocks appears to be more local and is responsible for the expansion of the western part of the asymmetric Gökova Basin. This N-S extension which appears to act on a regional-scale may be attributed to the geodynamic effects related to the combined forces of the southwestward extrusion of Anatolia and the roll-back process of African subduction beneath Anatolia.
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Šaraškinas, iaceslavas, et Audronis Kazimieras Kvedaras. « COURSE AND RESULTS OF TESTING A SUSPENDED COMPOSITE STRUCTURE/KABAMOSIOS BETONŠERDĖS KONSTRUKCIJOS BANDYMO EIGA IR REZULTATAI ». JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 6, no 5 (31 octobre 2000) : 315–21. http://dx.doi.org/10.3846/13921525.2000.10531608.
Texte intégralRésumé :
Testing a suspended roof structure has been performed. The span of construction is 10.65 m, the support height 2.60 m. Element supports are pins. Joint between elements in the middle of span is a pin, too. Structural elements were made from steel tubes with hollow concrete core. The thickness of the tube wall 1.60 mm, and a concrete core wall about 20 mm. The length of elements 5.35 m. The tested roof structure was loaded with 8 vertical loads. The strain distribution in 3 sections of the composite elements was analysed. In seven points of the structure, vertical deflections were measured. The horizontal reaction was measured too as it is shown in Fig 10. Additionally, horizontal deflections of columns were controlled by 3 indicatory tenzometers. The roof structure resistance was analysed and indicated loads of the ultimate and the serviceability limit states were reached. During the test, the serviceability limit state was reached under the load of 3,40 kN/m. The vertical deflection at the ¼ of span exceeded L/300, the ultimate value for member under asymmetrical loading. Failure occured under the load of 9,80 kN/m, when one of the composite roof elements collapsed close to its supporting zone at a distance of about 1 m from the support. The normal stress of this cross-section reached the value of steel tensile strength. An experimental ultimate load is by about 27% less than the theoretical one determined for flexural member. Investigation shows the developed equipment and applied methods being useful for testing suspended structures of final flexural stiffness made from straight concrete-filled steel tubular members. It has been finalised that overall behaviour of the tested structure is very close to that of straight suspension steel members of final flexural stiffness. It has been experimentally determined that the failure load łą 9.80 kN/m was achieved when total tension strength of the external steel shell was used up. The presented value is greater than the ultimate one calculated only for the flexural member. Because composite members of the suspended structure are not only flexural but also tensional ones, it is necessary, for prediction of their limit state, to take into account the interaction between both components of composite cross-section (external steel shell and hollow concrete core) under such loading conditions.
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Trujillo Ospina, Daniela. « Impactos de la racionalidad multicultural : conflictividad interétnica en el norte del Cauca ». REVISTA CONTROVERSIA, no 205 (23 octobre 2015) : 63–96. http://dx.doi.org/10.54118/controver.vi205.1091.
Texte intégralRésumé :
En Colombia, la implementación y consolidación de una nueva mentalidad de gobierno en los noventa genera una nueva constitución y un engranaje institucional que posibilita la activación política del sujeto étnico y que permite ahora pensarse las luchas de estas comunidades a través del reconocimiento de unos derechos territoriales. Tal posibilidad étnica se ve envuelta en un juego de relaciones de poder y de disputas por la concepción del espacio público donde se asientan estas poblaciones. Así las cosas, el escenario rural se convierte en un espacio propenso para exacerbar el carácter de estos enfrentamientos, dada la complejidad de un contexto sumido por el conflicto armado, una presencia diferenciada de las entidades estatales y un marcado acaparamiento de tierras que cada vez más estrecha a estos pobladores y tensiona sus relaciones de convivencia.Palabras clave: Multiculturalismo, grupo étnico, conflictividad interétnica, norte del Cauca. ABSTRACTImpacts of multicultural rationality: inter-ethnic conflict in the North of CaucaImplementation and consideration of a new government mentality in the 90s generates a new constitution and institutional structure in Colombia, that enables political activation of the ethnic subject and that now allows people to think about recognition of the territorial rights in these kind of fights among these communities. This ethnic possibility is now involved in a relationship of power and dispute game for the conception of the public space where these populations are settled. So, given the complexity of the context immersed by an armed conflict, a differentiated presence of state entities and an increasingly land grabbing that constrict more these people and stresses the relations of coexistence, the rural scenario becomes prone to exacerbate the character of these confrontations.Key Words: Multiculturalism, ethnic group, interethnic conflict, North of Cauca
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Candela, Philip A. « Controls on ore metal ratios in granite-related ore systems : an experimental and computational approach ». Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no 1-2 (1992) : 317–26. http://dx.doi.org/10.1017/s0263593300007999.
Texte intégralRésumé :
ABSTRACTSize and composition (bulk metal ratios) of magmatic hydrothermal mineral deposits are affected by a number of chemical and physical processes including the nature of the source region and mode of emplacement. At shallow levels, rising plumes of vapour bubbles + melt, and the advection of water through interconnected vapour bubbles, allows access of the magmatic aqueous phase to the upper reaches of a magma chamber. These processes are operative at shallow levels where low water solubility and high molar volume for water make these processes more efficient.Partitioning experiments suggest that oxygen fugacity-dependent crystal/melt partitioning of ore metals leads to different efficiencies of removal of Cu, W, and Mo from silicate melts into ore-forming aqueous fluids. For example, the Mo/W ratio in magmatic hydrothermal deposits should increase as the oxygen fugacity of the magma increases. Further, Cu should behave as a crystal-compatible element in H2O-undersaturated, sulfide-saturated felsic magmas with fO2 NNO + 1 due to the strong partitioning of Cu from the melt into pyrrhotite.Cycling of oxidised, hydrated, sulfidised and Cl-enriched oceanic crust into mantle can give rise to magmas that contain S but are oxidised (≥NNO). The combination of high oxidation state, relatively hydrous but shallow conditions and a high Cl/H2O ratio leads to saturation with respect to H2O early during crystallisation, and loss of a large proportion of magmatic Cu to the aqueous phase. Ores formed from these oxidised magmas also possess high Mo/W ratios due to the effect of oxygen fugacity on the sequestering of Mo vs W.In less oxidised magmas, Cu and Mo are partitioned into sulfides and Ti-bearing phases, respectively, resulting in lower efficiencies of removal of Cu and Mo from melts into aqueous fluids. Further, the partitioning of W into crystallising phases is reduced, producing a more efficient removal of W into ore-forming fluids. This ultimately leads to mineral deposits with higher W/(Mo + Cu) ratios relative to deposits associated with more oxidised systems. Silicic, high-F magmas with fO2 = NNO can be found in tensional environments (e.g. rocks associated with the Climax-type deposits of the Colorado Mineral Belt). High HF/H2O activity ratios in the source regions yield melts that evolve an aqueous phase late during crystallisation, leading to relatively low ratios of compatible/incompatible elements in the melt at H2O saturation.
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Mascarenhas, Carlos Alberto De Souza. « POLÍTICAS DE ESTADO NO ESPAÇO AGRÁRIO AMAZÔNICO : a construção da Ferrovia Açailândia (MA) – Barcarena (PA) no quilombo de África e Laranjituba em Moju (PA) ». InterEspaço : Revista de Geografia e Interdisciplinaridade 4, no 12 (22 mars 2018) : 186. http://dx.doi.org/10.18764/2446-6549.v4n12p186-206.
Texte intégralRésumé :
STATE POLICIES IN AMAZON AGRICULTURAL SPACE: construction of the Açailândia (MA) – Barcarena (PA) railroad in the quilombo of Africa and Laranjituba in Moju (PA)POLÍTICAS DE ESTADO EN EL ESPACIO AGRARIO AMAZÓNICO: la construcción del Ferrocarril Acailândia (MA) – Barcarena (PA) en el quilombo de África y Laranjituba en Moju (PA)Focalizamos uma situação empírica, o quilombo de África e Laranjituba no município de Moju (PA), para expor tensões e resistências entre a política concebida no Programa de Investimento em Logística (PIL) e o vivido das comunidades do quilombo. Trata-se de um programa que anuncia, no plano da psicoesfera e da representação, a construção da Ferrovia Açailândia (MA) – Barcarena (PA) que, embora não tenha ganhado forma espacial, já tensiona o lugar. Pretendemos, com isso, refletir sobre a relação entre espaço e política, isto é, a respeito do projeto de logística de transporte, sob forte influência do Estado, e seus efeitos entre as comunidades rurais quilombolas ao lançar o discurso da integração espacial, do desenvolvimento e da inclusão social a partir da interligação de um território com grande potencial mineral. A metodologia analítica adotada considera a existência de uma situação geográfica onde paisagem, configuração territorial e a dinâmica social das populações rurais quilombolas estão interligadas à perspectiva de construção da ferrovia, produzindo dialeticamente estratégias territoriais de resistência. Concluímos que o PIL tem como pressuposto a Amazônia como espaço areal ou vazio, uma vez que, desconsidera a dinâmica do meio ecológico e o território usado pelos gêneros de vida das populações tradicionais e que os povos quilombolas amazônicos, em especial, os de África e Laranjituba, cientes dessa condição, têm encontrado formas criativas de resistir e recriar suas estratégias de produção territorial.Palavras-chave: Tensões Territoriais; Quilombos Amazônicos; Ferrovia; Políticas de Estado.ABSTRACTWe focus on an empirical situation, the quilombo of Africa and Laranjituba in the municipality of Moju (PA), to expose tensions and resistances between the policy conceived in the Program of Investment in Logistics (PIL) and the lived one of the communities of the quilombo. It is a program that announces the construction of the Açailândia (MA) - Barcarena (PA) railroad in the area of the psychosphere and representation, which, although it has not gained a spatial form, already stresses the place. We intend, therefore, to reflect on the relationship between space and politics, that is, about the transport logistic project, under strong influence of the State, and its effects among the quilombola rural communities when launching the discourse of spatial integration, development And social inclusion through the interconnection of a territory with great mineral potential. The analytical methodology adopted considers the existence of a geographical situation where landscape, territorial configuration and the social dynamics of quilombola rural populations are interconnected the perspective of construction of the railroad producing dialectically territorial strategies of resistance. We conclude that the PIL assumes the Amazon as an empty or empty space, since it disregards the dynamics of the ecological environment and the territory used by the traditional populations' livelihoods, and that the Amazonian quilombola peoples, especially those in Africa and Laranjituba, aware of this condition, has found creative ways to resist and recreate its territorial production strategies.Keywords: Territorial Tensions; Amazonian Quilombos; Railroad; State Policies.RESUMENEnfocamos una situación empírica, el quilombo de África y Laranjituba en el municipio de Moju (PA), para exponer tensiones y resistencias entre la política concebida en el Programa de Inversión en Logística (PIL) y el vivido de las comunidades del quilombo. Se trata de un programa que anuncia, en el plano de la psicoesfera y de la representación, la construcción del Ferrocarril Açailândia (MA) - Barcarena (PA) que, aunque no hay aganado forma espacial, ya tensiona el lugar. Pretendemos, con ello, reflexionar sobre la relación entre espacio y política, es decir, acerca del proyecto de logística de transporte, bajo fuerte influencia del Estado, y sus efectos entre las comunidades rurales quilombolas al lanzar el discurso de la integración espacial, del desarrollo y de la inclusión social a partir de la interconexión de un territorio con gran potencial mineral. La metodología analítica adoptada considera la existencia de una situación geográfica donde paisaje, configuración territorial y la dinámica social de las poblaciones rurales quilombolas están interconectadas con la perspectiva de construcción del ferrocarril produciendo dialécticamente estrategias territoriales de resistencia. Concluimos que el PIL tiene como presupuesto la Amazonia como espacio arenal o vacío, ya que, desconsidera la dinámica del medio ecológico y el territorio usado por los géneros de vida de las poblaciones tradicionales y que los pueblos quilombolas amazónicos, en especial los de África y Laranjituba, conscientes de esa condición, ha encontrado formas creativas de resistir y recrear sus estrategias de producción territorial.Palabras clave: Tensiones Territoriales; Quilombos Amazónicos; Ferrocarril; Políticas de Estado.
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Revuelto, Luis Felipe, et Diego Ulloa. « ¿De quién es la culpa ? Reflexiones en torno al malestar del sujeto neoliberal durante la pandemia del Covid-19 en Chile y sus implicancias para el trabajo clínico psicoanalítico ». Castalia - Revista de Psicología de la Academia, no 35 (8 janvier 2021) : 25–42. http://dx.doi.org/10.25074/07198051.35.1839.
Texte intégralRésumé :
A propósito de la pandemia del Covid-19 en Chile, este texto busca elaborar una reflexión sobre el abordaje estatal de la emergencia sanitaria y los fenómenos asociados a esta, identificando como un elemento común de estas medidas: la responsabilización individual de los sujetos respecto de su malestar. El texto propone mostrar un breve recorrido de los hechos, medidas y resoluciones que el contexto supuso, para entenderlas en su conjunto a partir de cierta forma específica de subjetivación en Chile, a saber: la del neoliberalismo.
Los procesos de subjetivación suponen cierta forma de gobierno que concibe a la ciudadanía como personas libres y responsables de administrar y triunfar (o no) en su vida. A raíz de esto, se busca tensionar la noción de responsabilidad subjetiva y sus implicancias en la clínica psicoanalítica a partir de la lectura de Jacques Lacan, proponiendo que el sujeto del inconsciente se diferencia del individuo, en este caso, de la subjetivación.
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About the Covid-19 pandemic in Chile, this text seeks to elaborate a reflexion about the state approach to the sanitary emergency and the phenomena associated with this, identifying as a common element of these measures: the individual responsibility of the subjects regarding their discomfort. The text proposes to show a brief overview of the events, measures and resolutions that context supposed to understand them as a whole from a certain specific form of subjectivation in Chile, namely: that of neoliberalism.
The processes of subjectivation involve a certain form of government that conceives citizens as free people and responsible for administrating and succeeding (or not) in their lives. As a result of this, it seeks to tense the notion of subjective responsibility and its implications in the psychoanalytic clinic from the reading of Jacques Lacan, proposing that the subject of the unconscious differs from the individual, in this case, from the subjectivation.
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Revuelto, Luis Felipe, et Diego Ulloa. « ¿De quién es la culpa ? Reflexiones en torno al malestar del sujeto neoliberal durante la pandemia del Covid-19 en Chile y sus implicancias para el trabajo clínico psicoanalítico ». Castalia - Revista de Psicología de la Academia, no 35 (8 janvier 2021) : 25–42. http://dx.doi.org/10.25074/07198051.35.1839.
Texte intégralRésumé :
A propósito de la pandemia del Covid-19 en Chile, este texto busca elaborar una reflexión sobre el abordaje estatal de la emergencia sanitaria y los fenómenos asociados a esta, identificando como un elemento común de estas medidas: la responsabilización individual de los sujetos respecto de su malestar. El texto propone mostrar un breve recorrido de los hechos, medidas y resoluciones que el contexto supuso, para entenderlas en su conjunto a partir de cierta forma específica de subjetivación en Chile, a saber: la del neoliberalismo.
Los procesos de subjetivación suponen cierta forma de gobierno que concibe a la ciudadanía como personas libres y responsables de administrar y triunfar (o no) en su vida. A raíz de esto, se busca tensionar la noción de responsabilidad subjetiva y sus implicancias en la clínica psicoanalítica a partir de la lectura de Jacques Lacan, proponiendo que el sujeto del inconsciente se diferencia del individuo, en este caso, de la subjetivación.
--
About the Covid-19 pandemic in Chile, this text seeks to elaborate a reflexion about the state approach to the sanitary emergency and the phenomena associated with this, identifying as a common element of these measures: the individual responsibility of the subjects regarding their discomfort. The text proposes to show a brief overview of the events, measures and resolutions that context supposed to understand them as a whole from a certain specific form of subjectivation in Chile, namely: that of neoliberalism.
The processes of subjectivation involve a certain form of government that conceives citizens as free people and responsible for administrating and succeeding (or not) in their lives. As a result of this, it seeks to tense the notion of subjective responsibility and its implications in the psychoanalytic clinic from the reading of Jacques Lacan, proposing that the subject of the unconscious differs from the individual, in this case, from the subjectivation.
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Cena, Rebeca. « Pandemia por COVID-19 y los desafíos de avizorar/ocluir problemas sociales. Un análisis desde las políticas sociales como grafías ». AZARBE, Revista Internacional de Trabajo Social y Bienestar, no 9 (14 décembre 2020) : 93–102. http://dx.doi.org/10.6018/azarbe.456461.
Texte intégralRésumé :
El título que posee este escrito se vincula al contexto de la pandemia y los desafíos de avizorar y/o de ocluir problemas sociales. Este artículo ha sido elaborado con la intención de compartir un ejercicio de problematización en relación a las políticas sociales. El objetivo es analizar una serie de políticas sociales que se han implementado en el contexto de la pandemia por COVID-19 en Argentina y que serán abordadas aquí en tanto grafías. Es decir, en tanto símbolos que nos permiten tensionar algunos aspectos respecto a las sociedades donde se implementan. Se trabaja a partir del análisis documental explorando algunas intervenciones sociales que se han dado desde marzo a agosto de 2020. Se concluye que estas intervenciones estatales operan como indicios acerca de un capítulo no menor de los problemas expresión de la cuestión social. Junto con ello, que en tanto disputa de sentidos, recorte y delimitación, participan de la definición de algunos problemas incluyendo otros. The title of this writing is linked to the context of the pandemic and the challenges of envisioning and / or occluding social problems. This article has been prepared with the intention of sharing an exercise of problematization in relation to social policies. The objective of this writing is to analyze a series of social policies that have been implemented in the context of the COVID-19 pandemic in Argentina and that will be addressed here as spellings. That is, as symbols that allow us to stress some aspects regarding the societies where they are implemented. It works from the documentary analysis exploring some social interventions that have taken place from March to August 2020. It is concluded that these state interventions operate as indications about a not minor chapter of the problems expressing the social question. Along with this, as a dispute of meanings, clipping and delimitation, they participate in the definition of some problems, occluding others.