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301 results on '"Manfredi, G."'

1. Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

Author

Adrich, P., Blumer, P., Caratsch, G., Chung, M., Cladé, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Douillet, A., Drapier, D., Froelich, P., Garroum, N., Guellati-Khelifa, S., Guyomard, J., Hervieux, P-A., Hilico, L., Indelicato, P., Jonsell, S., Karr, J-P., Kim, B., Kim, S., Kim, E-S., Ko, Y. J., Kosinski, T., Kuroda, N., Latacz, B. M., Lee, B., Lee, H., Lee, J., Lim, E., Liszkay, L., Lunney, D., Manfredi, G., Mansoulié, B., Matusiak, M., Nesvizhevsky, V., Nez, F., Niang, S., Ohayon, B., Park, K., Paul, N., Pérez, P., Regenfus, C., Reynaud, S., Roumegou, C., Roussé, J-Y., Sacquin, Y., Sadowski, G., Sarkisyan, J., Sato, M., Schmidt-Kaler, F., Staszczak, M., Szymczyk, K., Tanaka, T. A., Tuchming, B., Vallage, B., Voronin, A., van der Werf, D. P., Won, D., Wronka, S., Yamazaki, Y., Yoo, K-H., and Yzombard, P.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The antiproton beam was delivered by the AD/ELENA facility. The positronium target was produced from a positron beam itself obtained from an electron linear accelerator. We observe an excess over background indicating antihydrogen production with a significance of 3-4 standard deviations.

Published
2023
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2. Positron accumulation in the GBAR experiment

Author

Blumer, P., Charlton, M., Chung, M., Cladé, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Dodd, L., Douillet, A., Guellati, S., Hervieux, P.-A., Hilico, L., Husson, A., Indelicato, P., Janka, G., Jonsell, S., Karr, J.-P., Kim, B.H., Kim, E.S., Kim, S.K., Ko, Y., Kosinski, T., Kuroda, N., Latacz, B.M., Lee, B., Lee, H., Lee, J., Leite, A.M.M., Lévêque, K., Lim, E., Liszkay, L., Lotrus, P., Lunney, D., Manfredi, G., Mansoulié, B., Matusiak, M., Mornacchi, G., Nesvizhevsky, V., Nez, F., Niang, S., Nishi, R., Ohayon, B., Park, K., Paul, N., Pérez, P., Procureur, S., Radics, B., Regenfus, C., Reymond, J.-M., Reynaud, S., Roussé, J.-Y., Rousselle, O., Rubbia, A., Rzadkiewicz, J., Sacquin, Y., Schmidt-Kaler, F., Staszczak, M., Szymczyk, K., Tanaka, T., Tuchming, B., Vallage, B., Voronin, A., van der Werf, D.P., Wolf, S., Won, D., Wronka, S., Yamazaki, Y., Yoo, K.H., Yzombard, P., and Baker, C.J.

Published
2022
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3. The European Rare Disease Network for HHT Frameworks for management of hereditary haemorrhagic telangiectasia in general and speciality care

Author

Shovlin, C.L., Buscarini, E., Sabbà, C., Mager, H.J., Kjeldsen, A.D., Pagella, F., Sure, U., Ugolini, S., Torring, P.M., Suppressa, P., Rennie, C., Post, M.C., Patel, M.C., Nielsen, T.H., Manfredi, G., Lenato, G.M., Lefroy, D., Kariholu, U., Jones, B., Fialla, A.D., Eker, O.F., Dupuis, O., Droege, F., Coote, N., Boccardi, E., Alsafi, A., Alicante, S., and Dupuis-Girod, S.

Published
2022
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6. A pulsed high-voltage decelerator system to deliver low-energy antiprotons

Author

Husson, A., Kim, B.H., Welker, A., Charlton, M., Choi, J.J., Chung, M., Cladé, P., Comini, P., Crépin, P.-P., Crivelli, P., Dalkarov, O., Debu, P., Dodd, L., Douillet, A., Guellati-Khélifa, S., Garroum, N., Hervieux, P.-A., Hilico, L., Indelicato, P., Janka, G., Jonsell, S., Karr, J.-P., Kim, E.-S., Kim, S.K., Ko, Y., Kosinski, T., Kuroda, N., Latacz, B., Lee, H., Lee, J., Leite, A.M.M., Lévêque, K., Lim, E., Liszkay, L., Lotrus, P., Lunney, D., Manfredi, G., Mansoulié, B., Matusiak, M., Mornacchi, G., Nesvizhevsky, V.V., Nez, F., Niang, S., Nishi, R., Nourbaksh, S., Park, K.H., Paul, N., Pérez, P., Procureur, S., Radics, B., Regenfus, C., Reymond, J.-M., Reynaud, S., Roussé, J.-Y., Rousselle, O., Rubbia, A., Rzadkiewicz, J., Sacquin, Y., Schmidt-Kaler, F., Staszczak, M., Tuchming, B., Vallage, B., Voronin, A., van der Werf, D.P., Wolf, S., Won, D., Wronka, S., Yamazaki, Y., and Yoo, K.-H.

Published
2021
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7. Positron production using a 9 MeV electron linac for the GBAR experiment

Author

Charlton, M., Choi, J.J., Chung, M., Cladé, P., Comini, P., Crépin, P.-P., Crivelli, P., Dalkarov, O., Debu, P., Dodd, L., Douillet, A., Guellati-Khélifa, S., Hervieux, P.-A., Hilico, L., Husson, A., Indelicato, P., Janka, G., Jonsell, S., Karr, J.-P., Kim, B.H., Kim, E.-S., Kim, S.K., Ko, Y., Kosinski, T., Kuroda, N., Latacz, B., Lee, H., Lee, J., Leite, A.M.M., Lévêque, K., Lim, E., Liszkay, L., Lotrus, P., Louvradoux, T., Lunney, D., Manfredi, G., Mansoulié, B., Matusiak, M., Mornacchi, G., Nesvizhevsky, V.V., Nez, F., Niang, S., Nishi, R., Nourbaksh, S., Park, K.H., Paul, N., Pérez, P., Procureur, S., Radics, B., Regenfus, C., Rey, J.-M., Reymond, J.-M., Reynaud, S., Roussé, J.-Y., Rousselle, O., Rubbia, A., Rzadkiewicz, J., Sacquin, Y., Schmidt-Kaler, F., Staszczak, M., Tuchming, B., Vallage, B., Voronin, A., Welker, A., van der Werf, D.P., Wolf, S., Won, D., Wronka, S., Yamazaki, Y., and Yoo, K.-H.

Published
2021
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25. The GBAR antimatter gravity experiment

Author

Pérez, P., Banerjee, D., Biraben, F., Brook-Roberge, D., Charlton, M., Cladé, P., Comini, P., Crivelli, P., Dalkarov, O., Debu, P., Douillet, A., Dufour, G., Dupré, P., Eriksson, S., Froelich, P., Grandemange, P., Guellati, S., Guérout, R., Heinrich, J. M., Hervieux, P.-A., Hilico, L., Husson, A., Indelicato, P., Jonsell, S., Karr, J.-P., Khabarova, K., Kolachevsky, N., Kuroda, N., Lambrecht, A., Leite, A. M. M., Liszkay, L., Lunney, D., Madsen, N., Manfredi, G., Mansoulié, B., Matsuda, Y., Mohri, A., Mortensen, T., Nagashima, Y., Nesvizhevsky, V., Nez, F., Regenfus, C., Rey, J.-M., Reymond, J.-M., Reynaud, S., Rubbia, A., Sacquin, Y., Schmidt-Kaler, F., Sillitoe, N., Staszczak, M., Szabo-Foster, C. I., Torii, H., Vallage, B., Valdes, M., Van der Werf, D. P., Voronin, A., Walz, J., Wolf, S., Wronka, S., and Yamazaki, Y.

Published
2015
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28. The Gbar project, or how does antimatter fall?

Author

Indelicato, Paul, Chardin, G., Grandemange, P., Lunney, D., Manea, V., Badertscher, A., Crivelli, P., Curioni, A., Marchionni, A., Rossi, B., Rubbia, A., Nesvizhevsky, V., Brook-Roberge, D., Comini, P., Debu, P., Dupré, P., Liszkay, L., Mansoulié, B., Pérez, P., Rey, J.-M., Reymond, B., Ruiz, N., Sacquin, Y., Vallage, B., Biraben, F., Cladé, P., Douillet, A., Dufour, G., Guellati, S., Hilico, L., Lambrecht, A., Guérout, R., Karr, J.-P., Nez, F., Reynaud, S., Szabo, C. I., Tran, V.-Q., Trapateau, J., Mohri, A., Yamazaki, Y., Charlton, M., Eriksson, S., Madsen, N., van der Werf, D.P., Kuroda, N., Torii, H., Nagashima, Y., Schmidt-Kaler, F., Walz, J., Wolf, S., Hervieux, P.-A., Manfredi, G., Voronin, A., Froelich, P., Wronka, S., and Staszczak, M.

Published
2014
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41. Simple method for the design of jet grouted umbrellas in tunneling

Author

Lignola, G.P., Flora, A., and Manfredi, G.

Subjects
Tunneling -- Methods, Arches -- Design and construction, Arches -- Mechanical properties, Grouting -- Methods, Combinatorial probabilities -- Research, Geometric probabilities -- Research, Probabilities -- Research, Structural design -- Evaluation, Earth sciences, Engineering and manufacturing industries, Science and technology
Abstract

Tunnel excavation in cohesionless soils implies the use of a temporary supporting structure prior to lining installation. This temporary structure has to couple safety and economy, and can be conveniently realized using ground improvement techniques (for instance, by creating an arch of partially overlapped subhorizontal jet grouted columns). The adoption of ground improvement techniques results in structures far from having a perfect shape because they are intrinsically affected by defects (in both geometrical and mechanical characteristics), and therefore their design may hide unforeseen risks. As a consequence, this is the typical case in which sophisticated numerical analyses may just give the illusion of being refined, if possible defects are not correctly taken into account. In this paper a simple yet rational analytical method for the design of a nonclosed tunnel supporting structure that may be of some help to this aim is presented. It is done with reference to a simple two-dimensional scheme. In the first part of the paper, a design chart of optimal shape and minimum structural thickness of the cross section of the supporting structure is shown. In the second part, an iterative procedure to verify the stability or to design the minimum structural thickness of an existing supporting structure with a predefined shape is described. This method, coupled with the analysis of structural demand, allows one in principle to plot design charts. This approach can easily take into account structural defects with a semiprobabilistic approach and therefore with a chosen risk level, which is of great help to the designer at least in a preliminary design stage. The proposed semiprobabilistic procedure is applied to the case of a temporary supporting structure realized by partially overlapped subhorizontal jet grouted columns, intrinsically affected by defects in diameter and position. The variability of these geometrical parameters was considered based on the large quantity of experimental evidence collected in field trials by the writers and published elsewhere. CE Database subject headings: Arches; Jet grouting; Limit analysis; Probability; Structural design; Tunnel supports; Thrust; Tunneling.

Published
2008

42. Ethical questions in human clinical psychopharmacology: should the focus be on placebo administration?

Author

Kotzalidis, G.D., Pacchiarotti, I., Manfredi, G., Savoja, V., Torrent, C., Mazzarini, L., Tatarelli, C., Amann, B., Di Marzo, S., Sanchez-Moreno, J., Sani, G., Girardi, P., Colom, F., and Vieta, E.

Subjects
Suicidal behavior -- Research -- Risk factors -- Complications and side effects, Antidepressants -- Complications and side effects -- Research -- Standards -- Usage, Placebos -- Usage -- Research -- Complications and side effects, Psychopharmacology -- Research -- Usage, Research ethics -- Standards -- Usage -- Research, Antipsychotic drugs -- Research -- Complications and side effects, Pharmaceuticals and cosmetics industries, Psychology and mental health, Standards, Usage, Complications and side effects, Research, Risk factors
Abstract

Keywords: ethics; placebo; randomised clinical trials 590 CritiqueEthical questions in human clinical psychopharmacology: should the focus be on placebo administration? SAGE Publications, Inc.200810.1177/0269881108089576 GDKotzalidis Department of Psychiatry, Sant'Andrea Hospital, 'La [...]

Published
2008
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43. Seismic behavior of a full-scale RC structure retrofitted using GFRP laminates

Author

Di Ludovico, M., Manfredi, G., Mola, E., Negro, P., and Prota, A.

Subjects
Laminated materials -- Mechanical properties, Reinforced concrete construction -- Materials, Earthquake resistant design -- Evaluation, Composite materials -- Mechanical properties, Engineering and manufacturing industries, Science and technology
Abstract

In the framework of the seismic performance assessment and rehabilitation research project, a series of bidirectional pseudodynamic tests were performed on a full-scale torsionally unbalanced three-story reinforced concrete (RC) frame structure. The structure was designed only for gravity loads and was subjected to two rounds of tests both on the 'as-built' and glass fiber reinforced polymer (GFRP) retrofitted configuration at the ELSA Laboratory of the Joint Research Centre of the European Commission. The aim of the GFRP repair was to enhance the global performance of the structure in terms of ductility and energy dissipation by providing columns with more deformation capacity and preventing the development of brittle failure modes. The driving principles for the design of the GFRP retrofit and the experimental results in terms of global and local performance are presented and compared in order to validate the proposed retrofit technique. The experimental results represent a reference database for the development of design criteria for the seismic retrofit of RC structures using composite materials. DOI: 10.1061/(ASCE)0733-9445(2008) 134:5(810) CE Database subject headings: Full scale tests; Seismic effects; Rehabilitation; Bending; Laminates; Concrete structures; Composite materials.

Published
2008

46. ANALYSIS OF CONTINUOUS COMPOSITE BEAMS INCLUDING PARTIAL INTERACTION AND BOND

Author

Fabbrocino, G., Manfredi, G., and Cosenza, E.

Subjects
Civil engineering -- Research, Pipe, Concrete -- Design and construction, Girders -- Design and construction, Strains and stresses -- Analysis, Numerical analysis -- Usage, Engineering and manufacturing industries, Science and technology
Abstract

Negative bending moments arise near the intermediate supports in continuous beams; thus, when steel-concrete composite beams are considered, tensile stresses act on the concrete slab. As a result the structural response generally becomes nonlinear due to two main effects: the slip at the slab-profile interface and cracking in the concrete slab. In the present paper a method of analysis for continuous composite beams based on a specific kinematic model of the cross section is proposed. The main feature of the model is the capability to take into account the slip at the slab-profile interface and the slip at the concrete-reinforcement interface. This approach allows the introduction of a constitutive relationship for bond between reinforcing bars and concrete in the theoretical analysis; thus, the tension stiffening effect in the negative bending moment regions can be computed, and the actual mechanical behavior of reinforcing bars of the slab can be analyzed. The results of numerical analyses are compared with experimental data, showing very good agreement and the capacity of the model to simulate the main aspects of the structural behavior of composite beams.

Published
2000

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