Results 101 to 110 of about 411,613 (237)

Dynamics around supermassive black holes

, 2007
The dynamics of galactic nuclei reflects the presence of supermassive black holes (SBHs) in many ways. Single SBHs act as sinks, destroying a mass in stars equal to their own mass in roughly one relaxation time and forcing nuclei to expand.
Gualandris, Alessia, Merritt, David
core  

X-ray emission from high-redshift miniquasars: self-regulating the population of massive black holes through global warming

, 2012
Observations of high-redshift quasars at z>6 imply that supermassive black holes (SMBHs) with masses over a billion solar masses were in place less than 1 Gyr after the Big Bang.
Abel, Agarwal, Ahn, Alvarez, Barkana, Barkana, Begelman, Blaes, Blecha, Bogdanović, Bond, Bromley, Bromm, Bromm, Bullock, Ciardi, Ciotti, Cuadra, Devecchi, Devecchi, Di Matteo, Dijkstra, Dijkstra, Dijkstra, Dotti, Draine, Escala, Fan, Fan, Furlanetto, Gnedin, Greif, Greif, Greif, Guedes, Haardt, Haehnelt, Haehnelt, Haiman, Haiman, Haiman, Haiman, Haiman, Haiman, Haiman, Heger, Holley-Bockelmann, Hopkins, Hosokawa, Inayoshi, Jarosik, Jeon, Kelly, Klypin, Kollmeier, Komatsu, Koushiappas, Kramer, Kuhlen, Kulkarni, Lacey, Lawrence, Lippai, Lodato, Loeb, Lousto, Machacek, Machacek, Madau, Madau, Marconi, Martini, Menou, Merloni, Mesinger, Micic, Milosavljević, Mirabel, Mortlock, Naoz, Navarro, Oh, Oh, Oh, Ohkubo, Omukai, Omukai, Park, Peebles, Petri, Regan, Ricotti, Ricotti, Ricotti, Rosalba Perna, Salpeter, Schleicher, Sesana, Sethi, Shakura, Shang, Shankar, Shankar, Shankar, Shapiro, Shapiro, Shapiro, Somerville, Spaans, Stacy, Stacy, Takamitsu Tanaka, Tanaka, Tanaka, Taniguchi, Tegmark, Tseliakhovich, Turk, Turk, Turner, Ueda, Venkatesan, Volonteri, Volonteri, Volonteri, Volonteri, Wechsler, Whalen, Wheeler, Willott, Willott, Wise, Wolcott-Green, Yoo, Yoshida, Zhang, Zhang, Zhao, Zhao, Zoltán Haiman   +139 more
core   +1 more source

Translocation effects on regional and local population viability and connectivity

Conservation Biology, EarlyView.
Abstract Translocations and reintroductions aim to improve the viability of isolated populations and promote connectivity for large carnivores. However, there is no established framework for assessing their success. We used the Eurasian lynx (Lynx lynx) in western and central Europe to assess the impact of translocations on the viability of six ...
Eva Sánchez Arribas, Aimara Planillo, Joe Premier, Tobias Kürschner, Elisa Belotti, Christine Breitenmoser‐Würsten, Luděk Bufka, Rok Černe, Thomas Engleder, Urša Fležar, Tomislav Gomerčić, Miha Krofel, Tereza Mináriková, Paolo Molinari, Simona Poláková, Kateřina Poledníková, Hubert Potočnik, Magda Sindičić, Ira Topličanec, Kristina Vogt, Josefa Volfová, Sybille Wölfl, Fridolin Zimmermann, Marco Heurich, Stephanie Kramer‐Schadt, Anja Molinari‐Jobin   +25 more
wiley   +1 more source

Risco de fadiga em ambiente térmico frio: caso de uma indústria de peixe congelado

Territorium: Revista Portuguesa de riscos, prevenção e segurança, 2017
Em diferentes indústrias caraterizadas com ambientes quentes, confortáveis e/ou frios, os trabalhadores devem usar um vestuário em função da atividade desenvolvida.
Mário Talaia, Leonor Teixeira, Isabel Tavares   +2 more
doaj  

Effects of restoration practices on biodiversity in temperate and boreal forests

Conservation Biology, EarlyView.
Abstract Several restoration practices are used to mitigate and compensate for the negative effects of large‐scale forestry on biodiversity in temperate and boreal forests. A comprehensive synthesis of the benefits of these practices across taxa is missing. We conducted a systematic review and meta‐analysis on this topic.
Malin Tälle, Thomas Ranius, Julia Koricheva   +2 more
wiley   +1 more source

Low-frequency gravitational radiation from coalescing massive black hole binaries in hierarchical cosmologies

, 2004
We compute the expected gravitational wave signal from coalescing massive black hole (MBH) binaries at the center of galaxies in a hierarchical structure formation scenario in which seed holes of intermediate mass form far up in the dark halo merger tree.
, A Sesana, Bender P, Cornish N J, F Haardt, Haehnelt M G, Lommen A N, M Volonteri, Magorrian J, P Madau, Phinney E S, Sesana A Haardt F Madau P Volonteri M, Thorne K S   +12 more
core   +3 more sources

Continental‐wide prioritization of protected areas to address global and habitat‐specific goals for avian biodiversity conservation

Conservation Biology, EarlyView.
Abstract The United Nations and European Union have set ambitious conservation goals to halt and reverse declines in biodiversity by protecting 30% of land and sea areas by 2030. Effective conservation planning requires evidence‐based spatial prioritization to maximize the coverage of species within designated protected areas.
Yanjie Xu, Diego Pavón‐Jordán, Tyler Hallman, Tristan R. M. Bakx, Lluís Brotons, Sergi Herrando, Alison Johnston, Brett K. Sandercock, Thomas Sattler, Alaaeldin Soultan, Vitalie Ajder, Dawn E. Balmer, Brian Burke, Thiago Cavalcante, Tomasz Chodkiewicz, Ruud P. B. Foppen, Anthony D. Fox, Verena Keller, Tatiana Kornienko, Peter Knaus, Heini Kujala, Åke Lindström, Qenan Maxhuni, Károly Nagy, Ingar Jostein Øien, Tomas Pärt, Dimitrije Radišić, Draženko Z. Rajković, Iván Ramirez, Paul Shimmings, Karel Šťastný, Thomas Vikstrøm, Tomasz Wilk, Aleksi Lehikoinen   +33 more
wiley   +1 more source

Disruption of a Red Giant Star by a Supermassive Black Hole and the Case of PS1-10jh

, 2014
The development of a new generation of theoretical models for tidal disruptions is timely, as increasingly diverse events are being captured in surveys of the transient sky. Recently, Gezari et al.
Amaro-Seoane, Pau, Bogdanovic, Tamara, Cheng, Roseanne M.   +2 more
core   +1 more source

Psychometric framework for coexistence with large carnivores

Conservation Biology, EarlyView.
Abstract Human–carnivore coexistence is essential for biodiversity conservation, yet measuring the attitudes and behaviors that support it remains methodologically challenging. We developed psychometric scales to assess willingness to coexist with carnivores and the underlying beliefs of this coexistence through an iterative expert elicitation process ...
Benjamin Ghasemi, Gerard Kyle, Tara Teel, Rebeca Niemiec, Kevin Crooks, Jenny Anne Glikman, Neil H. Carter, John A. Vucetich, Michelle L. Lute, Stewart Breck, Beatrice Frank, Dana Hoag, Jonathan Salerno, Lily M. van Eeden, Jeremy T. Bruskotter   +14 more
wiley   +1 more source

Doppler and Elastography as complementary diagnostic methods for mammary neoplasms in female cats

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2015
Objetivou-se descrever a utilização das técnicas Doppler e elastografia ARFI (acoustic radiation force impulse) na avaliação de neoplasias mamárias de gatas, métodos ainda não utilizados para tal estudo em fêmeas felinas.
M.A.R. Feliciano, M.C. Maronezi, M.B.S. Brito, A.P.R. Simões, G.S. Maciel, T.L.L. Castanheira, E. Garrido, R.R. Uscategui, N.G. Miceli, W.R.R. Vicente   +9 more
doaj   +1 more source