Universidad Mayor (Chile): últimos ingresos

Mostrando ítems 1901-1920 de 7087

    • Geographical origin determines responses to salinity of Mediterranean caddisflies 

      Carter, Mauricio J.; Flores, Matías; Ramos-Jiliberto, Rodrigo [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Genómica, Ecología y Medio Ambiente] (Public Library of Science, 2020-01-13)
      Many freshwater ecosystems worldwide, and particularly Mediterranean ones, show increasing levels of salinity. These changes in water conditions could affect abundance and distribution of inhabiting species as well as the ...

    • Prelimary Results of the Reaction of Cyclotrimerization of Phenylacetylene [2+2+2] Catalyzed by [(Cp*)Co(Indene)] Complex 

      Morales-Verdejo, César [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Camarada, Maria Belen [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Morales, Verónica; Canete, Alvaro; Martínez, Iván; Manríquez, Juan Manuel; Chavez, Ivonne (Sociedad Chilena de Química, 2018-03)
      This work describes the catalytic study of [(Cp*)Co(Ind)] (with Cp*- pentamethylcyclopentadienyl, Ind = Indenyl, (C9H7)) complex in cyclotrimerization of phenylacetylene. From the cylcotrimerization reaction was possible ...

    • DEF8 and Autophagy-Associated Genes are Altered in Mild Cognitive Impairment, Probable Alzheimer’s Disease Patients and a Transgenic Model of the Disease 

      Leyton, Esteban [Chile. Universidad Mayor. Centro de Biología Integrativa]; Matus, Diego [Chile. Universidad Mayor. Centro de Biología Integrativa]; Espinoza, Sandra [Chile. Universidad Mayor. Centro de Biología Integrativa]; Benítez, José Matías [Chile. Universidad Mayor. Centro de Biología Integrativa]; Cortés, Bastián [Chile. Universidad Mayor. Centro de Biología Integrativa]; Gómez, Wileidy [Chile. Universidad Mayor. Centro de Biología Integrativa]; Arévalo, Nohela B. [Chile. Universidad Mayor. Centro de Biología Integrativa]; Murgas, Paola [Chile. Universidad Mayor. Centro de Biología Integrativa]; Manque Ramírez, Patricio [Chile. Universidad Mayor. Centro de Genómica y Bioinformática]; Woehlbier, Ute [Chile. Universidad Mayor. Centro de Biología Integrativa]; Durán-Aniotz, Claudia; Hetz, Claudio; Behrens, María Isabel; San Martín, Carol D. [Chile. Universidad Mayor. Centro de Biología Integrativa]; Nassif, Melissa [Chile. Universidad Mayor. Centro de Biología Integrativa] (IOS Press, 2021-02-19)
      Background:Disturbances in the autophagy/endolysosomal systems are proposed as early signatures of Alzheimer’s disease (AD). However, few studies are available concerning autophagy gene expression in AD patients. Objective:To ...

    • Highly modulated supported triazolium-based ionic liquids: direct control of the electronic environment on Cu nanoparticles 

      Valdebenito, Cristian [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Pinto, José; Nazarkovsky, Michael; Chacón, Gustavo; Martínez-Ferrate, Oriol; Wrighton-Araneda, Kerry; Cortés-Arriagada, Diego; Camarada, María Belen [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Fernandes, Alves Jesum; Abarca, Gabriel [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada] (Royal Society of Chemistry, 2020-03-01)
      A series of new triazolium-based supported ionic liquids (SILPs), decorated with Cu NPs, were successfully prepared and applied to the N-arylation of aryl halides with anilines. The triazoles moieties were functionalised ...

    • Interaction of supported ionic liquids phases onto copper nanoparticles: A DFT study 

      Wrighton-Araneda, Kerry; Valdebenito, Cristian; Camarada, María B. [Chile. Universidad Mayor. Facultad de Ciencias, Centro de Nanotecnología Aplicada]; Abarca, Gabriel; Cortés-Arriagada, Diego (Elsevier, 2020-07-15)
      The interaction between Supported Ionic Liquids Phases (SILPs) based on triazole and copper nanoparticles was investigated using density functional theory calculations. Three triazolium cations (T1(+), T2(+), and T3(+)) ...

    • Effect of the Generation of PAMAM Dendrimers on the Stabilization of Gold Nanoparticles 

      Avila-Salas, Fabián [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; González, Rafael, I. [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Ríos, Paulina L. [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Araya-Durán, Ingrid [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Camarada, María B. [Chile. Universidad Mayor. Facultad de Ciencias, Centro de Nanotecnología Aplicada] (American Chemical Society, 2020-06-22)
      The behavior of small and intermediate generations of poly(amidoamine) (PAMAM) dendrimers and PAMAM vertical bar gold nanocomposites was studied by computational tools and experimental techniques. Molecular dynamics ...

    • Nanohybrids of reduced graphene oxide and cobalt hydroxide (Co(OH)(2)|rGO) for the thermal decomposition of ammonium perchlorate 

      Abarca, Gabriel; Ríos, Paulina L. [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Povea, Paula; Cerda-Cavieres, Christopher [Chile. Universidad Mayor. Facultad de Ciencias. Centro de Nanotecnología Aplicada]; Morales-Verdejo, César; Arroyo, Juan L.; Camarada, María B. [Chile. Universidad Mayor. Facultad de Ciencias, Centro de Nanotecnología Aplicada] (Royal Society of Chemistry, 2020-06-18)
      The catalytic activity of nanoparticles of cobalt hydroxide supported on reduced graphene oxide, Co(OH)(2)|rGO, was studied for the decomposition of ammonium perchlorate (AP), the principal ingredient of composite solid ...

    • Synthesis and Characterization of a 2,3-Dialkoxynaphthalene-Based Conjugated Copolymer via Direct Arylation Polymerization (DAP) for Organic Electronics 

      Jessop, Ignacio A.; Chong, Aylin; Graffo, Linda; Camarada, María B. [Chile. Universidad Mayor. Facultad de Ciencias, Centro de Nanotecnología Aplicada]; Espinoza, Catalina; Angel, Felipe A.; Saldías, Cesar; Tundidor-Camba, Alain; Terraza, Claudio A. (MDPI, 2020-06-19)
      Poly[(5,5'-(2,3-bis(2-ethylhexyloxy)naphthalene-1,4-diyl)bis(thiophene-2,2'-diyl))-alt-(2,1,3-benzothiadiazole-4,7-diyl)] (PEHONDTBT) was synthesized for the first time and through direct arylation polymerization (DAP) for ...

    • Coding closed and open quantum systems in MATLAB: applications in quantum optics and condensed matter 

      Norambuena, Ariel [Ctr Invest DAiTA LAB, Fac Estudios Interdisciplinarios, Univ Mayor, Chile]; Tancara, Diego; Coto, Raúl [Ctr Invest DAiTA LAB, Fac Estudios Interdisciplinarios, Univ Mayor, Chile] (IOP PUBLISHING LTD, 2020-07)
      We develop a package of numerical simulations implemented in MATLAB to solve complex many-body quantum systems. We focus on widely used examples that include the calculation of the magnetization dynamics for the closed and ...

    • Effect of phonons on the electron spin resonance absorption spectrum 

      Norambuena, Ariel [Ctr Invest DAiTA LAB, Fac Estudios Interdisciplinarios, Univ Mayor, Chile]; Jimenez, Alejandro; Becher, Christoph; Maze, Jerónimo R. (IOP Publishing Ltd., 2020-07)
      The unavoidable presence of vibrations in solid-state devices can drastically modify the expected electron spin resonance (ESR) absorption spectrum in magnetically active systems. In this work, we model the effect of phonons ...

    • Fisher Information, Weak Values and Correlated Noise in Interferometry 

      Carrasco, Sergio; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (Cornell University, 2019-02-25)
      In this article we present an experimental proposal for quantum enhanced estimation of optomechanical parameters. The precision of the estimation is improved by using the technique of weak value amplification, which can ...

    • Photon cooling by dispersive atom-field coupling with atomic postselection 

      Oyarce, Felipe; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (Cornell University, 2019-04-16)
      We propose, in a Ramsey interferometer, to cool the cavity field to its ground state, starting from a thermal distribution by a dispersive atom-field coupling followed by an atomic postselection. We also analyze the effect ...

    • Phonon maser stimulated by spin postselection 

      Eremeev, Vitalie; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (American Physical Society, 2020-06-09)
      In a sequence of single spins interacting longitudinally with a mechanical oscillator, and using the micromaser model with random injection, we show that after an appropriate postselection of each spin, a phonon laser ...

    • PT-symmetric phonon laser under gain saturation effect 

      Xie, Yi Fei; Cao, Zhen; He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Qing, Lin (The Optical Society, 2020-07-20)
      As an analog of optical laser, phonon laser has potential applications in various areas. We study a type of phonon laser implemented by two coupled micro-cavities, one of which carries optical gain medium. The phonon laser ...

    • Mechanical oscillations frozen on discrete levels by two optical driving fields 

      He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Lin, Qing; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Xiao, Min (American Physical Society, 2020-07-20)
      We report a synchronization phenomenon which is simulated with an optomechanical system driven by two equally strong fields with different frequencies. Once the frequencies of the driving fields are properly matched, the ...

    • Semi-exact solutions of sextic potential plus a centrifugal term 

      Dong, Qian; Sun, Guo-Hua; He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Dong, Shi-Hai (SPRINGER, 2020-11)
      We revisit the one-dimensional quantum system of a sextic potential added with a centrifugal term, V(x)=ax(-2)+bx(2)+cx(4)+dx(6), where the parameters a,b,c and d are arbitrary. We find that its solutions can be expressed ...

    • Control of interference and diffraction of a three-level atom in a double-slit scheme with cavity fields 

      Miranda, Mario; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (American Physical Society, 2020-09-28)
      A double-cavity with a quantum mechanical and a classical field is placed immediately behind a double-slit in order to analyze the wave-particle duality. Both fields have common nodes and antinodes through which a three-level ...

    • Ultra-high optical nonreciprocity with a coupled triple-resonator structure 

      Cao, Zhen; Xie, Yi Fei; He, Bing [Ctr Opt & Informac Cuant, Univ Mayor, Chile]; Lin, Qing (IOP Publishing Ltd., 2021)
      Optical transmission nonreciprocity as a widely investigated phenomenon is essential to various applications. Many sophisticated mechanisms have been proposed and tested for achieving the optical nonreciprocity on integrated ...

    • Controlling parameters of the wave-particle duality of a two-level atom in a double-slit scheme with cavity field 

      Miranda, Mario; Orszag, Miguel [Ctr Opt & Informac Cuant, Univ Mayor, Chile] (The Optical Society, 2021-01)
      A double-slit scheme placed immediately before a standing wave allows one to establish two possible paths for the passage of an atom. Each path matches with a node or antinode of the wave. The atom–field interaction is ...

    • Mutual Information and Quantum Discord in Quantum State Discrimination with a Fixed Rate of Inconclusive Outcomes 

      Jiménez, Omar [Centro de Óptica e Información Cuántica, Facultad de Ciencias, Universidad Mayor, Chile]; Solís-Prosser, Miguel Angel; Neves, Leonardo; Delgado, Aldo (MDPI Multidisciplinary Digital Publishing Institute, 2021-01-6)
      We studied the mutual information and quantum discord that Alice and Bob share when Bob implements a discrimination with a fixed rate of inconclusive outcomes (FRIO) onto two pure non-orthogonal quantum states, generated ...