Browsing A) Producción científica UCSC by Title
Now showing items 1232-1251 of 1816
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On-sky performance of the CLASS Q-band telescope
(2019-05-10)The Cosmology Large Angular Scale Surveyor (CLASS) is mapping the polarization of the cosmic microwave background (CMB) at large angular scales (2 < ℓ lesssim 200) in search of a primordial gravitational wave B-mode signal ... -
One-loop divergences in 7D Einstein and 6D conformal gravities
(2020-04-15)The aim of this note is to unveil a striking equivalence between the one-loop divergences in 7D Einstein and 6D Conformal Gravities. The particular combination of 6D pointwise Weyl invariants of the 6D Conformal Gravity ... -
Optical phase curve of the ultra-hot Jupiter WASP-121b
(2020-05)We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from ... -
Optical Variables for Optimization of Industrial Combustion Processes: Fundamentals, Key Aspects and Applications
(2019-02)Combustion is at the core of many of industrial processes where heat transfer occurs. The standard setup controls the flame behavior by measuring the composition of the residual gases discharged to the atmosphere. ... -
Optimal controllers for combustion processes: a preliminary approach
(2018)Several aspects encourage the development and implementation of combustion control systems. In this work, we discuss the fundamentals aspects concerning the design of different approaches for combustion controllers, which ... -
Optimal multiculture network design for maximizing resilience in the face of multiple correlated failures
(2019-05)Current data networks are highly homogeneous because of management, economic, and interoperability reasons. This technological homogeneity introduces shared risks, where correlated failures may entirely disrupt the network ... -
Optimal resistive forces for maximizing the reliability of leg muscles’ capacities tested on a cycle ergometer
(2018-02)This study determined the optimal resistive forces for testing muscle capacities through the standard cycle ergometer test (1 resistive force applied) and a recently developed 2-point method (2 resistive forces used for ... -
Optimality conditions for discrete-time control problems
(2020-04)We consider an optimal control problem governed by a system of nonlinear difference equations. We obtain the existence of the optimal control as well as first-order optimality conditions of Pontryagin type by using the ... -
Optimality conditions for nonregular optimal control problems and duality
(2018)We define a new class of optimal control problems and show that this class is the largest one of control problems where every admissible process that satisfies the Extended Pontryaguin Maximum Principle is an optimal ... -
Optimización en el manejo de reproductores para una mayor producción de huevos y larvas de psetta maxima (Linneaus, 1758)
(2013)Las óptimas condiciones de cultivo en el manejo de reproductores de Psetta maxima permiten obtener una mejor cantidad y calidad de huevos así como larvas viables con una mayor producción. Para evaluar las óptimas condiciones ... -
Optimization by factorial design of copper (II) and toxicity removal using a photocatalytic process with TiO 2 as semiconductor
(2009)The photochemical process of Cu (II) reduction by heterogeneous photocatalysis using titanium dioxide (TiO2) Degussa P-25 and a 254 nm UV-C lamp was studied. The aim of this work was to determine the efficiency of the ... -
Optimization of cephalexin synthesis with immobilized penicillin acylase in ethylene glycol medium at low temperatures
(2004)Organic cosolvents, and among them, polyols, are suitable media to perform the enzymatic synthesis of -lactam antibiotics with immobilized penicillin acylase, because they effectively reduce water activity, depressing ... -
Optimization of the Force-Velocity Relationship Obtained From the Bench-Press-Throw Exercise: An a Posteriori Multicenter Reliability Study
(2019-03)Purpose: An a posteriori multicenter reliability study was conducted to compare the reliability of the outcomes derived from the linear force-velocity (F-V) relationship (F-intercept [F0], V-intercept [V0], F-V slope, and ... -
Optimization of Yield in Kinetically Controlled Synthesis of Ampicillin with Immobilized Penicillin Acylase in Organic Media
(2002)Immobilized penicillin acylase is a moderately priced versatile enzyme, that is able to catalyze the synthesis of derived penicillins and cephalosporins from the corresponding β-lactam nuclei and proper side-chain precursors. ... -
Options trades, short sales and real earnings management
(2019-02-17)We study the link between measures of stock options’ volatility and firms’ real earnings management (RM). We hypothesise that RM causes uncertainty in the value of a firm’s common stock and, as a result, increases the ... -
Organic matter geochemical signatures (TOC, TN, C/N ratio, δ13C and δ15N) of surface sediment from lakes distributed along a climatological gradient on the western side of the southern Andes
(2018-07)Paleolimnological studies in western South America, where meteorological stations are scarce, are critical to obtain more realistic and reliable regional reconstructions of past climate and environmental changes, including ... -
Organización retórica del género Informe de Estabilidad Financiera: un contraste entre el informe del Banco Central de Chile y del Banco Federal Alemán
(2018-02)Estudiar la organización retórica de los géneros discursivos ha permitido conocer los patrones de regularidad que subyacen al modo en que se organiza el conocimiento de un género y cómo va configurándose para la consecución ... -
La organización retórica del marco referencial en tesis de trabajo social
(2012)Los estudios de géneros discursivos han prestado poca atención a las tesis o seminarios producidos para la obtención del grado de licenciatura. En este artículo se describe, desde el enfoque del ... -
Organochlorine pesticides in surface waters from Reloncaví Fjord and the inner sea of Chiloé (~ 39.5°S - 43°S), Chilean Patagonia
(2018-01)Surface water samples from the environmental continuum spanning rivers (Petrohue, Cochamo, Puelo), fjord (Reloncaví), and the inner sea of Chiloé in Chilean Patagonia were analyzed to estimate concentration and distribution ... -
Origin makes a difference: Alternative responses of an AM-dependent plant to mycorrhizal inoculum from invaded andnative soils under abiotic stress
(2022)The presence of invasive alien plants (IAPs) alters the composition of soil arbuscular mycorrhizal (AM) fungal communities. Although fundamental for plant development, plant responses to AM from invaded soils have not been ...