Results 111 to 120 of about 28,402 (294)

FMRI Approaches to Mapping Cerebrovascular Reactivity: Comparison of Gradient Echo BOLD and Spin Echo BOLD With Arterial Spin Labeling

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To compare markers of cerebrovascular reactivity (CVR) measured with Gradient Echo (GE, T2*w) and Spin‐Echo (SE, T2w) BOLD fMRI with quantitative physiological CVR measured using ASL. Methods CVR, the ability of blood vessels to dilate and increase cerebral blood flow (CBF), can be investigated with ASL fMRI but has a low signal‐to ...
Sara Pomante, Davide Di Censo, Alessandra Caporale, Fabrizio Fasano, Domenico Zacà, Elizabeth Jane Fear, Francesca Graziano, Manuela Carriero, Lucie Renee Raymonde Chalet, Emma Biondetti, Maria Eugenia Caligiuri, Michael Germuska, Richard Geoffrey Wise, Antonio Maria Chiarelli   +13 more
wiley   +1 more source

Rethinking double triggering: A phenotype rather than a patient–ventilator dyssynchrony?

Journal of Mechanical Ventilation
Double triggering has traditionally been defined as the presence of two consecutive ventilator cycles separated by an expiratory time equal or shorter than 50% of the inspiratory time.
Adrian Gallardo
doaj   +1 more source

Free‐Breathing Magnetization Transfer Imaging of the Lung at 0.55 T Using bSTAR

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop a clinically applicable method for magnetization transfer (MT) imaging of the lung at 0.55 T. Methods MT imaging of the chest was explored in healthy volunteers at 0.55 T using a self‐gated 3D half‐radial dual‐echo balanced steady‐state free precession sequence (bSTAR), a 2D multi‐slice gradient echo method (GRE) acquired in
Alexandra Braun, Grzegorz Bauman, Maurice Pradella, Jonathan Röcken, Katrin E. Hostettler, Oliver Bieri   +5 more
wiley   +1 more source

Spatially Offset Active Galactic Nuclei III: Discovery of Late-Stage Galaxy Mergers with The Hubble Space Telescope

, 2018
Galaxy pairs with separations of only a few kpc represent important stages in the merger-driven growth of supermassive black holes (SMBHs). However, such mergers are difficult to identify observationally due to the correspondingly small angular scales ...
Barrows, R. Scott, Comerford, Julia M., Greene, Jenny E.   +2 more
core   +1 more source

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

Oikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +4 more
wiley   +1 more source

Galaxy Collisions - Dawn of a New Era

, 2005
The study of colliding galaxies has progressed rapidly in the last few years, driven by observations with powerful new ground and space-based instruments. These instruments have used for detailed studies of specific nearby systems, statistical studies of
A. Alonso-Herrero, A. Bik, A. Boselli, A. D. Lewis, A. E. Shapley, A. Heavens, A. I. Zabludoff, A. I. Zabludoff, A. J. Bunker, A. Klypin, A. Lançon, A. M. Swinbank, A. Pope, A. R. King, A. R. King, A. Sandage, A. Toomre, A. Toomre, A. Wolter, B. C. Whitmore, B. C. Whitmore, B. G. Elmegreen, B. J. Smith, B. M. Poggianti, B. Moore, B. Moore, B. Nikolic, B. T. Soifer, B. Vollmer, B. Vollmer, C. Hopman, C. J. Conselice, C. J. Conselice, C. J. Conselice, C. J. Jog, C. K. Xu, C. M. Gútierrez, C. Shu, C. Struck, C. Struck, C. Struck, C. Struck, C. Struck, C. Struck, C. Struck-Marcell, C. Struck-Marcell, D. A. Swartz, D. B. Sanders, D. B. Sanders, D. Burstein, D. G. Lambas, D. M. Elmegreen, D. R. Patton, D. Schiminovich, D. T. Frayer, D. Zaritsky, E. A. Corbett, E. F. Bell, E. J. Barton, E. J. Barton Gillespie, E. Scannapieco, Ellingson, F. Schweizer, F. Schweizer, F. Schweizer, F. Zwicky, G. Fabbiano, H. A. Bushouse, H. Arp, H. Hippelein, H. I. Teplitz, H. Matsumoto, H. Spinrad, I. K. Baldry, I. Smail, J. Braine, J. Brinchman, J. C. Mihos, J. C. Mihos, J. C. Mihos, J. C. Mihos, J. D. P. Kenney, J. E. Barnes, J. E. Barnes, J. E. Barnes, J. E. Hibbard, J. F. Navarro, J. H. Krolik, J. Harris, J. J. Feldmeier, J. M. Miller, J. M. Miller, J. M. Miller, J. M. Schombert, J. S. Young, J.-F. Liu, K. A. Knierman, K. Bekki, K. Bekki, K. Bekki, K. Bundy, K. Bundy, K. Glazebrook, K. Glazebrook, K. Nagamine, K. Pimbblet, L. Bianchi, L. E. Cram, L. Hernquist, L. Lin, L. Sparke, L. Spitzer Jr., L. Yan, L. Yan, L. Yan, M. C. Begelman, M. D. Weinberg, M. Franx, M. G. Abadi, M. Noguchi, M. R. Krumholz, M. Rowan-Robinson, M. Ward, N. Bastian, N. Bergvall, N. Bouche, N. M. Förster Schreiber, O. Y. Gnedin, O. Y. Gnedin, P. N. Appleton, P. N. Appleton, P. N. Appleton, P. N. Appleton, P.-A. Duc, P.-A. Duc, P.-A. Duc, P.-A. Duc, R. B. Larson, R. B. Larson, R. C. Kennicutt Jr., R. C. Kennicutt Jr., R. C. Kennicutt Jr., R. Carlberg, R. Fiorito, R. Grijs De, R. Grijs De, R. Irion, R. J. Ivison, R. J. Lavery, R. Mushotsky, R. Mushotsky, R. Neri, R. O. Mao, R. P. Marel van der, R. W. O’Connell, S. A. Klimanov, S. Arribas, S. C. Chapman, S. C. Chapman, S. C. Javiel, S. Chandrasekhar, S. Juneau, S. Portegies Zwart, S. S. Allam, S. Schulz, S. Tremaine, T. Goto, T. R. Greve, V. P. Melo, V. Springel, W. Baade, W. C. Keel, W. C. Keel, W. C. Keel, W.-H. Wang, X. Zhang, Y. Gao, Y. Gao, Y. Gao, Y. Hashimoto, Y. Sofue   +180 more
core   +2 more sources

‘Should’ and ‘can’ active restoration be used in biodiversity offsets? Stakeholder perspectives from New South Wales, Australia

People and Nature, EarlyView.
Abstract Despite their controversial nature, biodiversity offsets are often used as a regulatory tool to counterbalance the impacts of land clearing on biodiversity. Offsets usually aim to achieve no net loss (NNL) of biodiversity through protection and/or restoration of habitat.
Laure‐Elise Ruoso, Roel Plant, Stephanie Hernandez, Josh Dorrough   +3 more
wiley   +1 more source

Simulations of Tidal Disruption of Supernova in Galaxy Nuclear Region: A Novel Model for Ambiguous Nuclear Transients

The Astrophysical Journal Letters
An increasing number of ambiguous nuclear transients, including some extreme nuclear transients with very shallow light-curve declines and weak active galactic nucleus (AGN) activity in their host galaxies, have been reported.
Xiangli Lei, Qingwen Wu, Ya-Ping Li, Wei-Hua Lei   +3 more
doaj   +1 more source

Clustering of X-Ray-Selected AGN

Advances in Astronomy, 2012
The study of the angular and spatial structure of the X-ray sky has been under investigation since the times of the Einstein X-ray Observatory. This topic has fascinated more than two generations of scientists and slowly unveiled an unexpected scenario ...
N. Cappelluti, V. Allevato, A. Finoguenov   +2 more
doaj   +1 more source

Evidence‐based guideline for clinical practice in the diagnosis, treatment, management, and prevention of recurrent wheezing in infants and toddlers in China

Pediatric Investigation, EarlyView.
ABSTRACT Wheezing is a common respiratory symptom in infants and toddlers, and recurrent wheezing is a significant respiratory disorder affecting this age group. Given the multifactorial etiology of recurrent wheezing, clinical practice lacks standardized diagnostic and therapeutic protocols. Recent years have witnessed substantial progress in clinical
Committee of Pediatrics, China Medical Education Association, Cooperative Group of Asthma, the Subspecialty Group of Respiratory, the Society of Pediatrics, Chinese Medical Association, Pediatric Respiratory Work Committee, Society of Pulmonologists, Chinese Medical Doctor Association, Committee of Pediatrics, Chinese Research Hospital Association, Pediatric Professional Committee of the Chinese Non‐public Medical Institutions Association, Professional Committee of Children's Health and Pharmaceutical Research, China Association of Traditional Chinese Medicine, Children's Safe Medication Branch of China News of Drug Information Association, Pediatric Expert Committee of China Primary Health Care Foundation, China International Medical Foundation   +16 more
wiley   +1 more source