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4 results on '"Vasi, Cirino"'

1. Time-of-Flight Neutron Imaging on IMAT@ISIS: A New User Facility for Materials Science

Author

Kockelmann, W, Minniti, T, Pooley, D, Burca, G, Ramadhan, R, Akeroyd, F, Howells, G, Moreton-Smith, C, Keymer, D, Kelleher, J, Kabra, S, Lee, T, Ziesche, R, Reid, A, Vitucci, G, Gorini, G, Micieli, D, Agostino, R, Formoso, V, Aliotta, F, Ponterio, R, Trusso, S, Salvato, G, Vasi, C, Grazzi, F, Watanabe, K, Lee, J, Tremsin, A, Mcphate, J, Nixon, D, Draper, N, Halcrow, W, Nightingale, J, Kockelmann, Winfried, Minniti, Triestino, Pooley, Daniel, Burca, Genoveva, Ramadhan, Ranggi, Akeroyd, Freddie, Howells, Gareth, Moreton-Smith, Chris, Keymer, David, Kelleher, Joe, Kabra, Saurabh, Lee, Tung, Ziesche, Ralf, Reid, Anthony, Vitucci, Giuseppe, Gorini, Giuseppe, Micieli, Davide, Agostino, Raffaele, Formoso, Vincenzo, Aliotta, Francesco, Ponterio, Rosa, Trusso, Sebastiano, Salvato, Gabriele, Vasi, Cirino, Grazzi, Francesco, Watanabe, Kenichi, Lee, Jason, Tremsin, Anton, McPhate, Jason, Nixon, Daniel, Draper, Nick, Halcrow, William, Nightingale, Jim, Kockelmann, W, Minniti, T, Pooley, D, Burca, G, Ramadhan, R, Akeroyd, F, Howells, G, Moreton-Smith, C, Keymer, D, Kelleher, J, Kabra, S, Lee, T, Ziesche, R, Reid, A, Vitucci, G, Gorini, G, Micieli, D, Agostino, R, Formoso, V, Aliotta, F, Ponterio, R, Trusso, S, Salvato, G, Vasi, C, Grazzi, F, Watanabe, K, Lee, J, Tremsin, A, Mcphate, J, Nixon, D, Draper, N, Halcrow, W, Nightingale, J, Kockelmann, Winfried, Minniti, Triestino, Pooley, Daniel, Burca, Genoveva, Ramadhan, Ranggi, Akeroyd, Freddie, Howells, Gareth, Moreton-Smith, Chris, Keymer, David, Kelleher, Joe, Kabra, Saurabh, Lee, Tung, Ziesche, Ralf, Reid, Anthony, Vitucci, Giuseppe, Gorini, Giuseppe, Micieli, Davide, Agostino, Raffaele, Formoso, Vincenzo, Aliotta, Francesco, Ponterio, Rosa, Trusso, Sebastiano, Salvato, Gabriele, Vasi, Cirino, Grazzi, Francesco, Watanabe, Kenichi, Lee, Jason, Tremsin, Anton, McPhate, Jason, Nixon, Daniel, Draper, Nick, Halcrow, William, and Nightingale, Jim

Abstract

The cold neutron imaging and diffraction instrument IMAT at the second target station of the pulsed neutron source ISIS is currently being commissioned and prepared for user operation. IMAT will enable white-beam neutron radiography and tomography. One of the benefits of operating on a pulsed source is to determine the neutron energy via a time of flight measurement, thus enabling energy-selective and energy-dispersive neutron imaging, for maximizing image contrasts between given materials and for mapping structure and microstructure properties. We survey the hardware and software components for data collection and image analysis on IMAT, and provide a step-by-step procedure for operating the instrument for energy-dispersive imaging using a two-phase metal test object as an example

Published
2018

2. Time-of-Flight Neutron Imaging on IMAT@ISIS: A New User Facility for Materials Science

Author

Kockelmann, W, Minniti, T, Pooley, D, Burca, G, Ramadhan, R, Akeroyd, F, Howells, G, Moreton-Smith, C, Keymer, D, Kelleher, J, Kabra, S, Lee, T, Ziesche, R, Reid, A, Vitucci, G, Gorini, G, Micieli, D, Agostino, R, Formoso, V, Aliotta, F, Ponterio, R, Trusso, S, Salvato, G, Vasi, C, Grazzi, F, Watanabe, K, Lee, J, Tremsin, A, Mcphate, J, Nixon, D, Draper, N, Halcrow, W, Nightingale, J, Kockelmann, Winfried, Minniti, Triestino, Pooley, Daniel, Burca, Genoveva, Ramadhan, Ranggi, Akeroyd, Freddie, Howells, Gareth, Moreton-Smith, Chris, Keymer, David, Kelleher, Joe, Kabra, Saurabh, Lee, Tung, Ziesche, Ralf, Reid, Anthony, Vitucci, Giuseppe, Gorini, Giuseppe, Micieli, Davide, Agostino, Raffaele, Formoso, Vincenzo, Aliotta, Francesco, Ponterio, Rosa, Trusso, Sebastiano, Salvato, Gabriele, Vasi, Cirino, Grazzi, Francesco, Watanabe, Kenichi, Lee, Jason, Tremsin, Anton, McPhate, Jason, Nixon, Daniel, Draper, Nick, Halcrow, William, Nightingale, Jim, Kockelmann, W, Minniti, T, Pooley, D, Burca, G, Ramadhan, R, Akeroyd, F, Howells, G, Moreton-Smith, C, Keymer, D, Kelleher, J, Kabra, S, Lee, T, Ziesche, R, Reid, A, Vitucci, G, Gorini, G, Micieli, D, Agostino, R, Formoso, V, Aliotta, F, Ponterio, R, Trusso, S, Salvato, G, Vasi, C, Grazzi, F, Watanabe, K, Lee, J, Tremsin, A, Mcphate, J, Nixon, D, Draper, N, Halcrow, W, Nightingale, J, Kockelmann, Winfried, Minniti, Triestino, Pooley, Daniel, Burca, Genoveva, Ramadhan, Ranggi, Akeroyd, Freddie, Howells, Gareth, Moreton-Smith, Chris, Keymer, David, Kelleher, Joe, Kabra, Saurabh, Lee, Tung, Ziesche, Ralf, Reid, Anthony, Vitucci, Giuseppe, Gorini, Giuseppe, Micieli, Davide, Agostino, Raffaele, Formoso, Vincenzo, Aliotta, Francesco, Ponterio, Rosa, Trusso, Sebastiano, Salvato, Gabriele, Vasi, Cirino, Grazzi, Francesco, Watanabe, Kenichi, Lee, Jason, Tremsin, Anton, McPhate, Jason, Nixon, Daniel, Draper, Nick, Halcrow, William, and Nightingale, Jim

Abstract

The cold neutron imaging and diffraction instrument IMAT at the second target station of the pulsed neutron source ISIS is currently being commissioned and prepared for user operation. IMAT will enable white-beam neutron radiography and tomography. One of the benefits of operating on a pulsed source is to determine the neutron energy via a time of flight measurement, thus enabling energy-selective and energy-dispersive neutron imaging, for maximizing image contrasts between given materials and for mapping structure and microstructure properties. We survey the hardware and software components for data collection and image analysis on IMAT, and provide a step-by-step procedure for operating the instrument for energy-dispersive imaging using a two-phase metal test object as an example

Published
2018

3. Energy landscape in protein folding and unfolding

Author

Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Mallamace, Francesco, Chen, Sow-Hsin, Corsaro, Carmelo, Mallamace, Domenico, Vasi, Sebastiano, Vasi, Cirino, Baglioni, Piero, Buldyrev, Sergey V., Stanley, H. Eugene, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Mallamace, Francesco, Chen, Sow-Hsin, Corsaro, Carmelo, Mallamace, Domenico, Vasi, Sebastiano, Vasi, Cirino, Baglioni, Piero, Buldyrev, Sergey V., and Stanley, H. Eugene

Abstract

We use 1H NMR to probe the energy landscape in the protein folding and unfolding process. Using the scheme ⇄ reversible unfolded (intermediate) → irreversible unfolded (denatured) state, we study the thermal denaturation of hydrated lysozyme that occurs when the temperature is increased. Using thermal cycles in the range 295

Published
2017

4. Water and lysozyme: Some results from the bending and stretching vibrational modes

Author

Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Mallamace, Francesco, Corsaro, Carmelo, Mallamace, Domenico, Vasi, Cirino, Cicero, Nicola, Stanley, H. Eugene, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Mallamace, Francesco, Corsaro, Carmelo, Mallamace, Domenico, Vasi, Cirino, Cicero, Nicola, and Stanley, H. Eugene

Abstract

The dynamic or glass transition in biomolecules is important to their functioning. Also essential is the transition between the protein native state and the unfolding process. To better understand these transitions, we use Fourier transform infrared spectroscopy to study the vibrational bending and stretching modes of hydrated lysozymes across a wide temperature range. We find that these transitions are triggered by the strong hydrogen bond coupling between the protein and hydration water. More precisely, we demonstrate that in both cases the water properties dominate the evolution of the system. We find that two characteristic temperatures are relevant: in the supercooled regime of confined water, the fragile-to-strong dynamic transition occurs at T[subscript L], and in the stable liquid phase, T* ≈ 315 ± 5 K characterizes the behavior of both isothermal compressibility K[subscript T] (T,P) and the coefficient of thermal expansion a[subscript P] (T,P).

Published
2016

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