1,347 research outputs found

    A macrocyclic ‛Co0’ complex: the relevance of ligand non-innocence to reactivity

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    We present a formally zero-valent compound, [Co(Mabiq)Na(OEt2)]2 (1). The complex was characterized by crystallographic, spectroscopic and DFT computational methods. The electronic structure is described as a CoII–(ligand-biradical). Compound 1 is reactive toward proton sources; CoI or CoII products result, depending on the source of protons used. The redox non-innocence of the Mabiq ligand, which accepts both protons and electrons, has important ramifications for reactivity

    The Digital Life of Walkable Streets

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    Walkability has many health, environmental, and economic benefits. That is why web and mobile services have been offering ways of computing walkability scores of individual street segments. Those scores are generally computed from survey data and manual counting (of even trees). However, that is costly, owing to the high time, effort, and financial costs. To partly automate the computation of those scores, we explore the possibility of using the social media data of Flickr and Foursquare to automatically identify safe and walkable streets. We find that unsafe streets tend to be photographed during the day, while walkable streets are tagged with walkability-related keywords. These results open up practical opportunities (for, e.g., room booking services, urban route recommenders, and real-estate sites) and have theoretical implications for researchers who might resort to the use social media data to tackle previously unanswered questions in the area of walkability.Comment: 10 pages, 7 figures, Proceedings of International World Wide Web Conference (WWW 2015

    The Student Movement Volume 107 Issue 13: We\u27ve Got the Spirit: Students Celebrate Dr. Luxton

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    HUMANS Best of Bon Appetit, Nora Martin Interview with the Dean of Lamson and Meier Halls, Interviewed by: Grace No The Joy of Japan, Interviewed by: Gloria Oh ARTS & ENTERTAINMENT A Creation Adventure, Nathaniel Reid Currently: Velma, Solana Campbell Suite Dreams for Sweet Dreams, Skylor Stark Where do I Find God? Part II, Anonymous NEWS AUSA Celebrates 100 Years of Student-Led Action, Andrew Francis Response to A House Divided Story, Christon Arthur, Provost Where\u27s the Harm in True Crime?. Abigail Kim IDEAS Redefining Free Agency in Sports, Andrew Francis Flying Cars of 2030, Rachel Ingram-Clay The Spooky Nature of Our Physical World, Alexander Navarro The State of AI, Abby Shim PULSE Debunking Myths Surrounding J.N. Andrews Honors Program, Gloria Oh Our Dear AU: A Spirit Week Tour, Lexie Dunham Romance and Reading, Gloria Oh LAST WORD An Ode to Tea, Alexander J. Hesshttps://digitalcommons.andrews.edu/sm-107/1012/thumbnail.jp

    The Student Movement Volume 107 Issue 1: We\u27re Back: Andrews Begins First Post-Covid School Year

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    HUMANS Interview of NEST performer: Sandrine Adap, Interviewed by: Nora Martin Meet Helena Hilton!, Interviewed by: Nora Martin Meet Aya Pagunsan, AUSA President, Interviewed by: Lauren Kim ARTS & ENTERTAINMENT Currently..., Solana Campbell Film and a Fling, Jonathon Woolford-Hunt Fleabag: Simply Human, Lily Rodriguez Summer Rewind, Ysabelle Fernando NEWS Andy\u27s Welcome Back Party, Gloria Oh News Analysis: Gun Violence in Cities, Julia Randall What\u27s New? Genesis Fellowship, Lauren Butler IDEAS Bring Balance to the Forest, Alexander Navaro In Rebuttal of Andrew Tate, Elizabeth Getahun Student Loan Forgiveness, Gabriela Francisco The Death of Her Majesty Queen Elizabeth II: The Right to Mourn (and Not), Alexander J. Hess PULSE Campus Life After Covid-19: A Newfound Freedom, Amelia Stefanescu Environmental Fridays Begins a New Season, Princella Tobias Freshmen Advice, Gloria Oh What to Eat in a Small Town, Lexie Dunhamhttps://digitalcommons.andrews.edu/sm-107/1000/thumbnail.jp

    The Student Movement Volume 107 Issue 16: Soul Lounge, Self-Care, and Stripple Breakfast Burritos: There\u27s Something for Everyone

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    HUMANS AU\u27s Favorite Classes, Solana Campbell Becoming Multilingual, Gloria Oh Greatest Gazebo Orders, Solana Campbell Interview with VP Nixon, Caryn Cruz ARTS & ENTERTAINMENT Currently: Babel, Terika Williams That 90\u27s Love: BSCF Soul Lounge, Skyler Campbell The Therapist, Marcel Mattox NEWS Experience Andrews University\u27s Community Adult Education, Gloria Oh Joyful Resilience: An Art Experience at AU, Solana Campbell Students Share Their African Heritage at Short Course, Andrew Francis IDEAS The Future of Self-Care, Katie Davis The Straw that Breaks the Camel\u27s Back? Beyoncé and the 2023 Grammys, Alexander J. Hess Death Toll Passes 41,000: Turkey and Syria Earthquakes, Abby Shim PULSE A Conversation with an NBA Physician, Reagan McCain Nick Bishop and Honduras, Interviewed by Abraham Bravo LAST WORD Intelligence, Artificial and Otherwise: A Reflection on Extended Cognition, ChatGPT, and Neurodivergence, Lily Burkehttps://digitalcommons.andrews.edu/sm-107/1015/thumbnail.jp

    Normal Modes of a Vortex in a Trapped Bose-Einstein Condensate

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    A hydrodynamic description is used to study the normal modes of a vortex in a zero-temperature Bose-Einstein condensate. In the Thomas-Fermi (TF) limit, the circulating superfluid velocity far from the vortex core provides a small perturbation that splits the originally degenerate normal modes of a vortex-free condensate. The relative frequency shifts are small in all cases considered (they vanish for the lowest dipole mode with |m|=1), suggesting that the vortex is stable. The Bogoliubov equations serve to verify the existence of helical waves, similar to those of a vortex line in an unbounded weakly interacting Bose gas. In the large-condensate (small-core) limit, the condensate wave function reduces to that of a straight vortex in an unbounded condensate; the corresponding Bogoliubov equations have no bound-state solutions that are uniform along the symmetry axis and decay exponentially far from the vortex core.Comment: 15 pages, REVTEX, 2 Postscript figures, to appear in Phys. Rev. A. We have altered the material in Secs. 3B and 4 in connection with the normal modes that have |m|=1. Our present treatment satisfies the condition that the fundamental dipole mode of a condensate with (or without) a vortex should have the bare frequency $\omega_\perp

    Melanoma staging: Evidence‐based changes in the American Joint Committee on Cancer eighth edition cancer staging manual

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    Answer questions and earn CME/CNETo update the melanoma staging system of the American Joint Committee on Cancer (AJCC) a large database was assembled comprising >46,000 patients from 10 centers worldwide with stages I, II, and III melanoma diagnosed since 1998. Based on analyses of this new database, the existing seventh edition AJCC stage IV database, and contemporary clinical trial data, the AJCC Melanoma Expert Panel introduced several important changes to the Tumor, Nodes, Metastasis (TNM) classification and stage grouping criteria. Key changes in the eighth edition AJCC Cancer Staging Manual include: 1) tumor thickness measurements to be recorded to the nearest 0.1 mm, not 0.01 mm; 2) definitions of T1a and T1b are revised (T1a, <0.8 mm without ulceration; T1b, 0.8‐1.0 mm with or without ulceration or <0.8 mm with ulceration), with mitotic rate no longer a T category criterion; 3) pathological (but not clinical) stage IA is revised to include T1b N0 M0 (formerly pathologic stage IB); 4) the N category descriptors “microscopic” and “macroscopic” for regional node metastasis are redefined as “clinically occult” and “clinically apparent”; 5) prognostic stage III groupings are based on N category criteria and T category criteria (ie, primary tumor thickness and ulceration) and increased from 3 to 4 subgroups (stages IIIA‐IIID); 6) definitions of N subcategories are revised, with the presence of microsatellites, satellites, or in‐transit metastases now categorized as N1c, N2c, or N3c based on the number of tumor‐involved regional lymph nodes, if any; 7) descriptors are added to each M1 subcategory designation for lactate dehydrogenase (LDH) level (LDH elevation no longer upstages to M1c); and 8) a new M1d designation is added for central nervous system metastases. This evidence‐based revision of the AJCC melanoma staging system will guide patient treatment, provide better prognostic estimates, and refine stratification of patients entering clinical trials. CA Cancer J Clin 2017;67:472‐492. © 2017 American Cancer Society.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/139981/1/caac21409_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/139981/2/caac21409-sup-0001-suppinfo01.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/139981/3/caac21409.pd
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