Browsing by Title Artículos de revistas

Now showing items 3071-3090 of 7549

    • Health assessment of electronic waste workers in chile: Participant characterization 
      Yohannessen, Karla; Pinto-Galleguillos, Daniela; Parra-Giordano, Denisse; Agost, Amaranta; Valdés, Macarena; Smith, Lauren M.; Galen, Katherine; Arain, Aubrey; Rojas, Felipe; Neitzel, Richard L.; Ruiz Rudolph, Pablo (MDPI AG, 2019)
      Little research has been done to evaluate the occupational health of electronic waste (e-waste) recycling workers in Latin America. The objective of this study was to complete comprehensive health evaluations on e-waste ...
    • Healthy organizations: toward a diagnostic method 
      Tarride, Mario Iván; Zamorano, R. Ariel; Varela, S. Nicolás; González, M. Julia (EMERALD GROUP PUBLISHING LIMITED, 2008)
      Purpose – The purpose of this paper is to propose, from the way in which an allopathic physician makes a diagnosis of a person’s health, an organizational diagnosis metaphor that can contribute in the search for an ...
    • Heat and dissolved oxygen exchanges between the sediment and water column in a shallow salty lagoon 
      Fuente Stranger, Alberto de la (American Geophysical Union, 2014)
      Dissolved oxygen (DO) and heat exchanges across the water-sediment interface (WSI) of a shallow lagoon are controlled by processes occurring on both sides of the WSI, particularly volumetric source and sink on the sediment ...
    • Heat and Dust The Solar Energy Challenge in Chile 
      Jiménez Estévez, Guillermo Andrés; Palma Behnke, Rodrigo; Roman Latorre, Roberto; Morán, Luis (IEEE-Inst Electrical Electronics Engineers, 2015)
    • Heat transfer enhancement in cubical enclosures with vertical fins 
      Frederick González, Ramón (2007)
      Natural convection of air in a cubical enclosure with a thick partition fitted vertically on the hot wall is numerically investigated for Rayleigh numbers of 10(3)-10(6). A three dimensional convective circulation is ...
    • Heat transfer enhancement strategies in a swirl flow minichannel heat sink based on hydrodynamic receptivity 
      Herrmann-Priesnitz, Benjamín; Calderón Muñoz, Williams; Diaz, Gerardo; Soto Bertrán, Rodrigo (Elsevier Ltd, 2018)
      The swirl flow minichannel heat sink has shown to be a promising alternative for thermal management of high heat flux applications, such as electronics and concentrated photovoltaics. Effective heat transfer enhancement ...
    • Heat transfer framework for selecting the structure of open volumetric air receivers 
      Sarmiento C., Cardemil J., Calderón W., Herrmann B. (International Solar Energy Society, 2020)
    • Heat transfer in an oval tube heat exchanger with different kinds of longitudinal vortex generators 
      Díaz, Daniel; Valencia Musalem, Álvaro (American Society of Thermal and Fluids Engineers, 2017)
      A numerical study was performed on a plate fi n and oval tube heat exchanger with diff erent kinds of longitudinal vortex generators (LVG). The infl uence of LVG on heat transfer and pressure drop is investigated, and ...
    • Heat-assisted batch settling of mineral suspensions in inclined containers 
      Reyes, Cristian; Ihle, Christian F.; Apaz, Fernando; Cisternas, Luis A. (MDPI AG, 2019)
      In mineral processing, the common requirement for progressively finer milling due to the decreasing of ore grades implies the need for more challenging water recovery conditions in thickeners. Several mining operations ...
    • Heating pre-treatment of copper ores and its effects on the bond work index 
      Cisternas, Nataly; Tobosque, Pablo; Sbarbaro, Daniel; Munnier González, Carlos Roberto; Kracht Gajardo, Willy Andrés; Carrasco, Claudia (MDPI, 2022)
      Comminution is the stage with the largest energy consumption in the mining process. Therefore, several pre-treatments have been proposed to reduce the energy requirements of this stage. This work analyzed the effect of a ...
    • Heavy metals concentration in sediment of lluta river basin 
      Copaja, S.; Muñoz, E. (Sociedad Chilena de Quimica, 2018)
      Northern Chile is characterized by water scarcity. The Lluta River, located in the XV region of Arica and Parinacota, is the one of the main rivers in northern Chile. The elevated levels of metals and metaloids in the ...
    • Heights of algebraic numbers modulo multiplicative group actions 
      Maza, Ana Cecilia de la; Friedman Rafael, Eduardo (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2008-08)
      Given a number field K and a subgroup G ⊂ K ∗ of the multiplicative group of K, Silverman defined the G-height H(θ;G) of an algebraic number θ as H(θ;G) := inf g∈G, n∈N H g1/nθ , where H on the right is ...
    • Helical Flow and Transient Solute Dilution in Porous Media 
      Chiogna, Gabriele; Cirpka, Olaf; Herrera Ricci, Paulo (Springer, 2016)
      Helical flow can occur in porous media if the hydraulic conductivity tensor is anisotropic.We study the structure of steady-state flowfields in three-dimensional anisotropic porous media formed by two homogeneous layers, ...
    • Hermes: A Digital Assistant for Coordinating Invisible Work in Family Elderly Caregiving Scenarios 
      Benavides A., Gutierrez F.J., Ochoa S.F. (Springer, 2020)
    • HERMETISM VARIATION in Camponotus morosus (Hymenoptera: Formicidae) with the age of homospecific intruding ants 
      Ipinza-Regla, Joaquín; Covacevich, Alejandra; Araya, Jaime E. (Universidad de Concepcion, 2019)
      Ants present hermetism, that is, they recognize and discriminate individuals alien to the colony, even at a homospecific level, which results in aggressive reactions against intruders, varying with their age. To evaluate ...
    • Hermitian quadratic eigenvalue problems of restricted rank 
      Conca Rosende, Carlos; Puschmann, Heinrich (1993)
      we consider a quadratic eigenvalue problem such that the second order term is a Hermitian matrix of rank r, the linear term is the identity matrix, and the constant term is an arbitrary Hermitian matrix A E cnn. Of the ...
    • Herschel far-infrared spectral-mapping of orion bn/kl outflows: spatialdistribution of excited co, h2o, oh, ... 
      Goicoechea, Javier R.; Chavarría, Luis; Cernicharo, José; Neufeld, David A.; Vavrek, Roland; Bergin, Edwin A.; Cuadrado, Sara; Encrenaz, Pierre; Etxaluze, Mireya; Melnick, Gary J.; Polehampton, Edward (IOP Publishing, 2015)
      We present similar to 2; x 2' spectral-maps of Orion Becklin-Neugebauer/Kleinmann-Low (BN/KL) outflows taken with Herschel at similar to 12 '' resolution. For the first time in the far-IR domain, we spatially resolve the ...
    • HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE): The Large Magellanic Cloud dust 
      Meixner, M.; Galliano, F.; Hony, S.; Roman Duval, Julia; Robitaille, T.; Panuzzo, P.; Sauvage, M.; Gordon, K.; Engelbracht, C.; Misselt, K.; Okumura, K.; Beck, T.; Bernard, J. P.; Bolatto, Alberto; Bot, Caroline; Boyer, M.; Bracker, S.; Carlson, L. R.; Clayton, G. C.; Chen, C.-H. R.; Churchwell, E.; Fukui, Y.; Galametz, M.; Hora, J. L.; Hughes, A.; Indebetouw, R.; Israel, F. P.; Kawamura, A.; Kemper, F.; Kim, S.; Kwon, E.; Lawton, B.; Li, A.; Long, K. S.; Marengo, M.; Madden, S. C.; Matsuura, M.; Oliveira, J. M.; Onishi, T.; Otsuka, M.; Paradis, D.; Poglitsch, A.; Riebel, D.; Reach, W. T.; Rubio López, Mónica; Sargent, B.; Sewiło, M.; Simon, J. D.; Skibba, R.; Smith, L. J.; Srinivasan, S.; Tielens, A. G. G. M.; van Loon, J. Th.; Whitney, B.; Woods, P. M. (EDP SCIENCES S A., 2010-07)
      The HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) of the Magellanic Clouds will use dust emission to investigate the life cycle of matter in both the Large and Small Magellanic Clouds (LMC and SMC). Using ...
    • THE HERschel inventory of the agents of galaxy evolution in the magellanic clouds, a herschel open time key program 
      Meixner, M.; Panuzzo, P.; Roman Duval, Julia; Engelbracht, C.; Babler, B.; Seale, J. P.; Hony, S.; Montiel, E.; Sauvage, M.; Gordon, K.; Misselt, K.; Okumura, K.; Chanial, P.; Beck, T.; Bernard, J. P.; Bolatto, A.; Bot, C.; Boyer, M. L.; Carlson, L. R.; Clayton, G. C.; Chen, C.-H. R.; Cormier, D.; Fukui, Y.; Galametz, M.; Galliano, F.; Hora, J. L.; Hughes, A.; Indebetouw, R.; Israel, F.P.; Kawamura, A.; Kemper, F.; Kim, S.; Kwon, E.; Lebouteiller, V.; Li, A.; Long, K. S.; Madden, S. C.; Matsuura, M.; Muller, E.; Oliveira, J. M.; Onishi, T.; Otsuka, M.; Paradis, D.; Poglitsch, A.; Reach, W. T.; Robitaille, T. P.; Rubio López, Mónica; Sargent, B.; Sewiłlo, M.; Skibba, R.; Smith, L.; Srinivasan, S.; Tielens, A.; van Loon, J. Th.; Whitney, B. (The American Astronomical Society, 2013)
      We present an overview of the HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) in the Magellanic Clouds project, which is a Herschel Space Observatory open time key program. We mapped the Large Magellanic ...
    • A Herschel PACS survey of the dust and gas in Upper Scorpius disks 
      Mathews, Geoffrey S.; Pinte, Christophe; Duchêne, Gaspard; Williams, Jonathan P.; Ménard, Francois (EDP Sciences, 2013)
      We present results of far-infrared photometric observations with Herschel PACS of a sample of Upper Scorpius stars, with a detection rate of previously known disk-bearing K and M stars at 70, 100, and 160 μm of 71%, 56%, ...