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487 results on '"Collison, D"'

1. Adapting wild biodiversity conservation approaches to conserve agrobiodiversity

Author

Jago, S., Elliott, K. F. V. A., Tovar, C., Soto Gomez, M., Starnes, T., Abebe, W., Alexander, C., Antonelli, A., Baldaszti, L., Cerullo, G., Cockel, C., Collison, D., Cowell, C., Delgado, R., Demissew, S., Devenish, A., Dhanjal-Adams, K., Diazgranados, M., Drucker, A. G., Dulloo, M. E., Erland, B. M., Fadika, S., Huang, W., Inwood, K., Jones, S. K., Klitgaard, B. B., Lebbie, A., Lim, F. K. S., Lulekal, E., Morales-Rozo, C., Niang, F., Nic Lughadha, E., Oliveira, R. P., Ortega-Argueta, A., Pironon, S., Plummer, J. F., Ramirez, M., Ryan, P., Simbiano, F. J., Smith, R. J., Stevenson, P. C., Treydte, A. C., Victor, J. E., Weber, O., Williams, C., Yohanna, C. T., Grace, O. M., Darbyshire, I., and Borrell, J. S.

Published
2024
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2. Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model

Author

O'Hare, C. A. J., Loomba, D., Altenmüller, K., Álvarez-Pol, H., Amaro, F. D., Araújo, H. M., Sierra, D. Aristizabal, Asaadi, J., Attié, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, E., Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamaño, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., De Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Díez-Ibáñez, D., D'Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domínguez, B., Ribas, E. Ferrer, Flöthner, K. J., Froehlich, M., Galán, J., Galindo, J., García, F., Pascual, J. A. García, Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., McCabe, C., McKie, L. J., McLean, A. G., McNamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., da Luz, H. Natal, Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., de Solórzano, A. Ortiz, von Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Olloqui, E. Picatoste, Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Santos, J. M. F. dos, Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., van Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobičić, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., and Zettlemoyer, J.

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the $\sim$100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond., Comment: 77 pages, 20 figures. Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)

Published
2022

4. Magnetic cryocooling with Gd3+ centers in a light and compact framework

Author

Lorusso, G., Sharples, J. W., Palacios, E., Roubeau, O., Brechin, E. K., Sessoli, R., Rossin, A., Tuna, F., McInnes, E. J. L., Collison, D., and Evangelisti, M.

Subjects
Condensed Matter - Materials Science
Abstract

The magnetocaloric effect of gadolinium formate, Gd(OOCH)3, is experimentally determined down to sub-Kelvin temperatures by direct and indirect methods. This 3D metal-organic framework material is characterized by a relatively compact crystal lattice of weakly interacting Gd3+ spin centers interconnected via light formate ligands, overall providing a remarkably large magnetic:non-magnetic elemental weight ratio. The resulting volumetric magnetic entropy change is decidedly superior in Gd(OOCH)3 than in the best known magnetic refrigerant materials for liquid-helium temperatures and low-moderate applied fields., Comment: 11 pages, 4 figures

Published
2012
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5. Clinical and vessel characteristics associated with hard outcomes after PCI and their combined prognostic implications

Author

Yang, S, primary, Hwang, D, additional, Nam, C W, additional, Doh, J H, additional, Shin, E S, additional, Chen, S L, additional, Kakuta, T, additional, Piroth, Z, additional, Johnson, N P, additional, Hakeem, A, additional, Uretsky, B F, additional, Daemen, J, additional, Collison, D, additional, De Bruyne, B, additional, and Koo, B K, additional

Published
2023
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7. Tunable dipolar magnetism in high-spin molecular clusters

Author

Evangelisti, M., Candini, A., Ghirri, A., Affronte, M., Powell, G. W., Gass, I. A., Wood, P. A., Parsons, S., Brechin, E. K., Collison, D., and Heath, S. L.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We report on the Fe17 high-spin molecular cluster and show that this system is an exemplification of nanostructured dipolar magnetism. Each Fe17 molecule, with spin S=35/2 and axial anisotropy as small as D=-0.02K, is the magnetic unit that can be chemically arranged in different packing crystals whilst preserving both spin ground-state and anisotropy. For every configuration, molecular spins are correlated only by dipolar interactions. The ensuing interplay between dipolar energy and anisotropy gives rise to macroscopic behaviors ranging from superparamagnetism to long-range magnetic order at temperatures below 1K., Comment: Replaced with version accepted for publication in Physical Review Letters

Published
2006
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12. Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model

Author

O'Hare, C. A. J., Loomba, D., Altenmüller, K., Álvarez-Pol, H., Amaro, F. D., Araújo, H. M., Sierra, D. Aristizabal, Asaadi, J., Attié, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, E., Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamaño, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., De Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Díez-Ibáñez, D., D'Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domínguez, B., Ribas, E. Ferrer, Flöthner, K. J., Froehlich, M., Galán, J., Galindo, J., García, F., Pascual, J. A. García, Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., McCabe, C., McKie, L. J., McLean, A. G., McNamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., da Luz, H. Natal, Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., de Solórzano, A. Ortiz, von Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Olloqui, E. Picatoste, Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Santos, J. M. F. dos, Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., van Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobičić, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., Zettlemoyer, J., O'Hare, C. A. J., Loomba, D., Altenmüller, K., Álvarez-Pol, H., Amaro, F. D., Araújo, H. M., Sierra, D. Aristizabal, Asaadi, J., Attié, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, E., Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamaño, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., De Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Díez-Ibáñez, D., D'Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domínguez, B., Ribas, E. Ferrer, Flöthner, K. J., Froehlich, M., Galán, J., Galindo, J., García, F., Pascual, J. A. García, Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., McCabe, C., McKie, L. J., McLean, A. G., McNamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., da Luz, H. Natal, Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., de Solórzano, A. Ortiz, von Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Olloqui, E. Picatoste, Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Santos, J. M. F. dos, Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., van Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobičić, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., and Zettlemoyer, J.

Abstract

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the $\sim$100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond., Comment: 77 pages, 20 figures. Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)

Published
2022

14. Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model

Author

Ciaran O'Hare, Loomba, D., Altenmuller, K., Alvarez-Pol, H., Amaro, F. D., Araujo, H. M., Aristizabal Sierra, D., Asaadi, J., Attie, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, e, Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamano, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Dezibánez, D., D Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domnguez, B., Ferrer Ribas, E., Flothner, K. J., Froehlich, M., Galán, J., Galindo, J., Garca, F., Garca Pascual, J. A., Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., Mccabe, C., Mckie, L. J., Mclean, A. G., Mcnamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., Natal Da Luz, H., Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., Ortiz de Solórzano, A., Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Picatoste Olloqui, E., Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Dos Santos, J. M. F., Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobicic, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., and Zettlemoyer, J.

Subjects
Astrophysics and Astronomy, Physics::Instrumentation and Detectors, hep-ex, astro-ph.CO, hep-ph, Detectors and Experimental Techniques, physics.ins-det, Particle Physics - Experiment, Particle Physics - Phenomenology
Abstract

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the $\sim$100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond.

Published
2022

18. Problems

Author

Klamkin, M. S., Moore, Tom, Yeshurun, S., Collison, D. M., Stark, J. M., Valdez, Eduardo, Bluger, Walter, Kestelman, H., Daykin, David E., Singmaster, David, Orno, Peter, Clark, Robert, and Edgar, G. A.

Published
1980
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19. Problems

Author

Cherry, Jerome C., Philippou, Andreas N., Moran, Daniel A., Collison, D. M., Heuer, G. A., Stark, J. M., Kravitz, Sidney, Dundas, Kay, Solomon, Marius, Freed, Daniel S., Gibbs, Richard A., Merkey, P., and Berman, Martin

Published
1978
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21. Synthesis and characterization of uranyl compounds with iminodiacetate and oxydiacetate displaying variable denticity

Author

Jiang, J., Sarsfield, M. J., Renshaw, J. C., Livens, F. R., Collison, D., Charnock, J. M., Helliwell, M., and Eccles, H.

Subjects
Chemistry, Inorganic -- Research, Acetates -- Physiological aspects, Oxygen -- Physiological aspects, Ligands -- Physiological aspects, Solid state chemistry -- Research, Chemistry
Abstract

Research has been conducted on the uranyl compounds with the dicarboxylate ligands oxydiacetate or iminodiacetate. The synthesis and characterization of these compounds have been carried out in a solid state and the results of the X-ray crystallographic analysis are presented.

Published
2002

22. X-ray absorption spectroscopy of tricarbonatodioxouranate(V), [UO2(CO3)3](super 5-), in aqueous solution

Author

Docrat, T.I., Mosselmans, J.F.W., Charnock, J.M., Whiteley, M.W., Collison, D., Livens, F.R., Jones, C., and Edmiston, M.J.

Subjects
Complex compounds -- Research, Voltammetry -- Usage, Oxidation-reduction reaction -- Research, Extended X-ray absorption fine structure -- Usage, Chemistry
Abstract

Cyclic voltammetry of tricarbonatodioxouranate(V), [UO2(CO3)3](super 5-) in aqueous solution showed that the analogous U couple in the compound is irreversible, indicating significant conformational change on one-electron reduction of [UO2(CO3)3](super 4-). Extended x-ray absorption fine structure spectroscopy was used to define the coordination geometry of the reduced species and showed that both axial and equatorial U-O distances increase on reduction. The basic geometry of the U complex was apparently unaltered by reduction.

Published
1999

23. Scientific Business Abstracts of the 113th Annual Meeting of the Association of Physicians of Great Britain and Ireland

Author

Cacciottolo, TM, Perikari, A, van der Klaauw, A, Henning, E, Stadler, LKJ, Keogh, J, Farooqi, IS, Tenin, G, Keavney, B, Ryan, E, Budd, R, Bewley, M, Coelho, P, Rumsey, W, Sanchez, Y, McCafferty, J, Dockrell, D, Walmsley, S, Whyte, M, Liu, Y, Choy, M-K, Abraham, S, Black, G, Ford, T, Stanley, B, Good, R, Rocchiccioli, P, McEntegart, M, Watkins, S, Eteiba, H, Shaukat, A, Lindsay, M, Robertson, K, Hood, S, McGeoch, R, McDade, R, Sidik, N, McCartney, P, Corcoran, D, Collison, D, Rush, C, McConnachie, A, Touyz, R, Oldroyd, K, Berry, Colin, Gazdagh, G, Diver, L, Marshall, J, McGowan, R, Ahmed, F, Tobias, E, Curtis, E, Parsons, C, Maslin, K, D’Angelo, S, Moon, R, Crozier, S, Gossiel, F, Bishop, N, Kennedy, S, Papageorghiou, A, Fraser, R, Gandhi, S, Prentice, A, Inskip, H, Godfrey, K, Schoenmakers, I, Javaid, MK, Eastell, R, Cooper, C, Harvey, N, Watt, ER, Howden, A, Mirchandani, A, Hukelmann, JL, Sadiku, P, Plant, TM, Cantrell, DA, Whyte, MKB, Walmsley, SR, Mordi, I, Forteath, C, Wong, A, Mohan, M, Palmer, C, Doney, A, Rena, G, Lang, C, Gray, EH, Azarian, S, Riva, A, Edwards, H, McPhail, MJW, Williams, R, Chokshi, S, Patel, VC, Edwards, LA, Page, D, Miossec, M, Williams, S, Monaghan, R, Fotiou, E, Santibanez-Koref, M, Badat, M, Mettananda, S, Hua, P, Schwessinger, R, Hughes, J, Higgs, D, Davies, J, Cacciottolo, TM, Perikari, A, van der Klaauw, A, Henning, E, Stadler, LKJ, Keogh, J, Farooqi, IS, Tenin, G, Keavney, B, Ryan, E, Budd, R, Bewley, M, Coelho, P, Rumsey, W, Sanchez, Y, McCafferty, J, Dockrell, D, Walmsley, S, Whyte, M, Liu, Y, Choy, M-K, Abraham, S, Black, G, Ford, T, Stanley, B, Good, R, Rocchiccioli, P, McEntegart, M, Watkins, S, Eteiba, H, Shaukat, A, Lindsay, M, Robertson, K, Hood, S, McGeoch, R, McDade, R, Sidik, N, McCartney, P, Corcoran, D, Collison, D, Rush, C, McConnachie, A, Touyz, R, Oldroyd, K, Berry, Colin, Gazdagh, G, Diver, L, Marshall, J, McGowan, R, Ahmed, F, Tobias, E, Curtis, E, Parsons, C, Maslin, K, D’Angelo, S, Moon, R, Crozier, S, Gossiel, F, Bishop, N, Kennedy, S, Papageorghiou, A, Fraser, R, Gandhi, S, Prentice, A, Inskip, H, Godfrey, K, Schoenmakers, I, Javaid, MK, Eastell, R, Cooper, C, Harvey, N, Watt, ER, Howden, A, Mirchandani, A, Hukelmann, JL, Sadiku, P, Plant, TM, Cantrell, DA, Whyte, MKB, Walmsley, SR, Mordi, I, Forteath, C, Wong, A, Mohan, M, Palmer, C, Doney, A, Rena, G, Lang, C, Gray, EH, Azarian, S, Riva, A, Edwards, H, McPhail, MJW, Williams, R, Chokshi, S, Patel, VC, Edwards, LA, Page, D, Miossec, M, Williams, S, Monaghan, R, Fotiou, E, Santibanez-Koref, M, Badat, M, Mettananda, S, Hua, P, Schwessinger, R, Hughes, J, Higgs, D, and Davies, J

Published
2019

31. Redox-state dependent spectroscopic properties of porous organic polymers containing furan, thiophene, and selenophene

Author

Hua, Carol, Woo, S, Rawal, A, Tuna, F, Hook, JM, Collison, D, D'Alessandro, DM, Hua, Carol, Woo, S, Rawal, A, Tuna, F, Hook, JM, Collison, D, and D'Alessandro, DM

Abstract

A series of electroactive triarylamine porous organic polymers (POPs) with furan, thiophene, and selenophene (POP-O, POP-S, and POP-Se) linkers have been synthesised and their electronic and spectroscopic properties investigated as a function of redox state. Solid state NMR provided insight into the structural features of the POPs, while in situ solid state Vis-NIR and electron paramagnetic resonance spectroelectrochemistry showed that the distinct redox states in POP-S could be reversibly accessed. The development of redox-active porous organic polymers with heterocyclic linkers affords their potential application as stimuli responsive materials in gas storage, catalysis, and as electrochromic materials.

Published
2017

35. The Modern Corporation Statement on Accounting

Author

Collison, D., Jansson, A., Larsson-Olaison, U., Power, D. M., Cooper, C., Gray, R., Ferguson, J., Sikka, P., Millo, Y., Jonnergård, K., Djelic, M-L., Quattrone, P., Cooper, D. J., Carter, C., Liew, P., Coles, R. F., Robson, K., Chabrak, N., Stevenson, L., Willmott, H., and Veldman, J.

Abstract

A number of regulatory initiatives on the national, international and EU levels both foster and fortify the principle of Maximizing Shareholder Value (MSV) in corporate governance. This tendency can be clearly seen in such areas as financial accounting standards and various soft and hard law initiatives pertaining to corporate governance that have flourished in recent decades. These have created a new type of accountability for managers of listed corporations as will be exemplified below. One of the most important regulatory changes over this period was when the EU opted for International Financial Reporting Standards (IFRS) as a basis for financial reporting for the accounts of all listed, EU-based corporations in 2005. These accounting standards, amounting to quasi legislation, are issued by a private sector body – the International Accounting Standards Board (IASB). Other important regulatory changes include the various national ‘corporate governance codes’ that have mushroomed since the early 1990s. Although such codes pertain to member states, the EU remains the main body prescribing most new hard-law corporate governance regulation within the union, for example, by means of the 13 company law directives issued so far.

Published
2016

36. Hypnosis For Asthma

Author

Waxman, D., Maher-Loughnan, G. P., and Collison, D. R.

Published
1968

37. Solution chemistry of uranyl ion with iminodiacetate and oxydiacetate: a combined NMR/EXAFS and potentiometry/calorimetry study

Author

Jiang, J., Renshaw, J.C., Sarsfield, M.J., Livens, F.R., Collison, D., Charnock, J.M., and Eccles, H.

Subjects
Chemical reactions -- Analysis, Coordination compounds -- Analysis, Ligands -- Analysis, Ions, Chemistry
Abstract

Results show three types of metal:ligand complexes among uranyl-iminodiacetate/oxydiacetate complexes in solution as revealed by nuclear magnetic resonance and extended X-ray absorption fine structure analyses. Data indicate the occurrence of 1:1 and 1:2 monomeric and 2:2 dimeric complexes.

Published
2003

38. Redox tunable viologen-based porous organic polymers

Author

Hua, Carol, Chan, B, Rawal, A, Tuna, F, Collison, D, Hook, JM, D'Alessandro, DM, Hua, Carol, Chan, B, Rawal, A, Tuna, F, Collison, D, Hook, JM, and D'Alessandro, DM

Abstract

The interplay between the electronic, spectral and host–guest properties of a donor–acceptor polymer in its different redox states is demonstrated.

Published
2016

40. A Spectroscopic Investigation of Magnetic Exchange Between Highly Anisotropic Spin Centres

Author

Boeer, A.B., Barra, Anne-Laure, Chibotaru, L.F., Collison, D., Mcinnes, E.J.L., Mole, R., Simeoni, G.G., Timco, G.A., Ungur, L., Unruh, T., Winpenny, Richard E. P., Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Forschungsneutronenquelle Heinz Maier-Leibnitz FRM II, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Department of Chemistry, and University of Manchester [Manchester]

Subjects
[PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus], [CHIM.COOR]Chemical Sciences/Coordination chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

45. 1,2,3-Triazolate-bridged tetradecametallic transition metal clusters [M-14(L)(6)O-6(OMe)(18)X-6] (M = Fe-III, Cr-III and V-III/IV) and related compounds: Ground-state spins ranging from S=0 to S=25 and spin-enhanced magnetocaloric effect

Author

Shaw, R, Laye, RH, Jones, LF, Low, DM, Talbot-Eeckelaers, C, Wei, Q, Milios, CJ, Teat, S, Helliwell, M, Raftery, J, Evangelisti, M, Affronte, M, Collison, D, Brechin, EK, and McInnes, EJL

Subjects
WHEELS, HIGH-NUCLEARITY, MAGNETS, SOLVOTHERMAL SYNTHESIS, DODECANUCLEAR CHROMIUM(III) CAGE
Abstract

We report the synthesis, by solvothermal methods, of the tetradecametallic cluster complexes [M-14(L)(6)O-6(OMe)(18)Cl-6] (M = Fe-III, Cr-III) and [V-14(L)(6)O-6(OMe)(18)Cl6-xOx] (L = anion of 1,2,3-triazole or derivative). Crystal structure data are reported for the {M-14} complexes [Fe-14(C2H2N3)(6)O-6(OMe)(18)Cl-6], [Cr-14(bta)(6)O-6(OMe)(18)Cl-6] (btaH = benzotriazole), [V14O6(Me(2)bta)(6)(OMe)(18)Cl6-xOx] [Me(2)btaH = 5,6-Me-2-benzotriazole; eight metal sites are V-III, the remainder are disordered between {V-III-Cl}(2+) and {(VO)-O-IV}(2+)] and for the distorted [(Fe14O9)-O-III(OH)(OMe)(8)(bta)(7)(MeOH)(5)(H2O)Cl-8] structure that results from non-solvothermal synthetic methods, highlighting the importance of temperature regime in cluster synthesis. Magnetic studies reveal the {Fe-14} complexes to have ground state electronic spins of S

Published
2007

48. Coherent electron spin manipulation in a dilute oriented ensemble of molecular nanomagnets: Pulsed EPR on doped single crystals

Author

Moro, F, Kaminski, D, Tuna, F, Whitehead, G, Timco, G, Collison, D, Winpenny, R, Ardavan, A, Mcinnes, E, Moro, Fabrizio, Kaminski, Danielle, Tuna, Floriana, Whitehead, George F. S., Timco, Grigore A., Collison, David, Winpenny, Richard E. P., Ardavan, Arzhang, McInnes, Eric J. L., Moro, F, Kaminski, D, Tuna, F, Whitehead, G, Timco, G, Collison, D, Winpenny, R, Ardavan, A, Mcinnes, E, Moro, Fabrizio, Kaminski, Danielle, Tuna, Floriana, Whitehead, George F. S., Timco, Grigore A., Collison, David, Winpenny, Richard E. P., Ardavan, Arzhang, and McInnes, Eric J. L.

Abstract

Doping a Cr7Zn molecular nanomagnet into a diamagnetic and isostructural host allows pulsed X-band EPR on single crystals, including relaxation and nutation experiments on the S = 3/2 ground state. © 2014 The Royal Society of Chemistry.

Published
2013

49. Electron Spin Resonance of High-Spin Cobalt in Microporous Crystalline Cobalt-Containing Aluminophosphates

Author

Weckhuysen, B.M., Verberckmoes, A.A., Uytterhoeven, M.G., Mabbs, F.E., Collison, D., Boer, E. de, and Schoonheydt, R.A.

Subjects
Scheikunde
Abstract

Four highly crystalline, cobalt-containing microporous aluminophosphates (CoAPO-5, CoAPO-11, CoAPO-44, and CoAPO-46) have been investigated by using liquid He X- and/or Q-band electron spin resonance(ESR) spectroscopy in order to investigate the coordination of high-spin cobalt before and after calcination. The ESR spectra of the four zeolite structures are characterized by an axial signal with an effective g^ ≈ 5.80-5.44 and gII ≈ 2.00. Quantitative temperature dependence measurements of this axial signal in the temperature range 4-30 K reveal a Curie-Weiss behavior for both as-synthesized and calcined samples confirming (a) the ms ) ( 1/2 ground state of magnetically isolated high-spin cobalt and (b) a zero field splitting ¢ > 0 cm-1. Quantitation of the ESR signals indicated that most of the Co2+ is ESR active and that only about 30% of this Co2+ can be oxidized to the ESR-inactive Co3+ after calcination. The spin Hamiltonian parameters of as-synthesized and calcined CoAPO-5 material, as determined by spectrum simulation and the microwave power saturation technique, support the presence of framework Co2+ in a flattened or elongated Four highly crystalline, cobalt-containing microporous aluminophosphates (CoAPO-5, CoAPO-11, CoAPO- 44, and CoAPO-46) have been investigated by using liquid He X- and/or Q-band electron spin resonance (ESR) spectroscopy in order to investigate the coordination of high-spin cobalt before and after calcination. The ESR spectra of the four zeolite structures are characterized by an axial signal with an effective g^ ≈ 5.80-5.44 and gII ≈ 2.00. Quantitative temperature dependence measurements of this axial signal in the temperature range 4-30 K reveal a Curie-Weiss behavior for both as-synthesized and calcined samples confirming (a) the ms ) ( 1/2 ground state of magnetically isolated high-spin cobalt and (b) a zero field splitting ¢ > 0 cm-1. Quantitation of the ESR signals indicated that most of the Co2+ is ESR active and that only about 30% of this Co2+ can be oxidized to the ESR-inactive Co3+ after calcination. The spin Hamiltonian parameters of as-synthesized and calcined CoAPO-5 material, as determined by spectrum simulation and the microwave power saturation technique, support the presence of framework Co2+ in a flattened or elongated tetrahedron (D2d).

Published
2000

50. Varying spin state composition by the choice of capping ligand in a family of molecular chains: detailed analysis of magnetic properties of chromium(III) horseshoes

Author

Baker, M. L., Bianchi, A., Carretta, S., Collison, D., Docherty, R. J., McInnes, E. J. L., McRobbie, A., Muryn, C. A., Mutka, H., Piligkos, Stergios, Rancan, M., Santini, P., Timco, G. A., Tregenna-Piggott, P. L. W., Tuna, F., Güdel, H. U., Winpenny, R. E. P., Baker, M. L., Bianchi, A., Carretta, S., Collison, D., Docherty, R. J., McInnes, E. J. L., McRobbie, A., Muryn, C. A., Mutka, H., Piligkos, Stergios, Rancan, M., Santini, P., Timco, G. A., Tregenna-Piggott, P. L. W., Tuna, F., Güdel, H. U., and Winpenny, R. E. P.

Published
2011

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