262,593 research outputs found
Porfirio Díaz y diplomáticos presiden el funeral de Manuel Azpiroz
No full textManuel Azpiroz y Mora, n. en Puebla y m. en EUA (1836-1905). Diputado al Congreso Constituyente de 1856-57. Combatió a los conservadores y luchó contra la intervención francesa y el imperio. Fueron destacadas intervenciones: la toma de Chihuahua en 1868, y su acción como fiscal en el juicio a Maximiliano, Miramón y Mejía, para quienes pidió la pena de muerte. Muere siendo embajador de México en Washington, EUA. Ver: MUSSACHIO, Humberto, Milenios de México, Diccionario Enciclopédico de México, Hoja Casa Editoria, Italia, 1999, T. I, p. 573. NOTA: En la imagen se ve a Clayton Powel, ingeniero, militar y político estadounidense (1833-1914). General de la Unión en la Guerra Civil Americana, embajador de EUA en México durante la administración de William McKinley y Theodore Roosevelt (1897-1905), renuncia en 1905 por motivos de salud y le sustituye Mr. Edwin H. Conger. Ver en línea: bioguide.congress.gov [última consulta agosto 03, 2009]; CASASOLA Zapata, Gustavo. "Historia gráfica de la Revolución Mexicana", Edit. Trillas, 1992, Tomo 1, p. 62. V.F. 34632. Depuró Violeta García, 03/08/2009
Ideen un mètode per evitar la regurgitació recurrent
No full textLa ruminació, la tornada del menjar cap a la boca després de ser ingerida, pot ser un problema menor o dur a complicacions nutricionals severes. L'equip del professor del Departament de Medicina de la UAB i investigador de l'Institut de Recerca Hospital Universitari Vall d'Hebron Fernando Azpiroz ha desenvolupat un mètode per ensenyar a qui la pateix a modular l'activitat muscular fins a suprimir aquest comportament.La rumiación, la vuelta de la comida hacia la boca después de ser ingerida, puede ser un problema menor o llevar a complicaciones nutricionales severas. El equipo del profesor del Departamento de Medicina de la UAB e investigador del Instituto de Investigación Hospital Universitario Vall d'Hebron Fernando Azpiroz ha desarrollado un método para enseñar a quienes la padecen a modular la actividad muscular hasta suprimir este comportamiento.Rumination, the regurgitation of recently ingested food into the mouth, can be a minor problem or lead to severe nutritional complications. Professor Fernando Azpiroz, from the UAB Department of Medicine and Vall d'Hebron Research Institute, and his team, have developed a new method to show people suffering from rumination how to modulate their muscular activity in order to suppress it
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Contribución documental al Tema Central: Apuntes para una cronología del Museo Histórico Nacional y el panorama museístico de Uruguay 1900 – 1985
No full textReseña y cronología que da cuenta de los acontecimientos más relevantes relacionados a la historia del Museo Histórico Nacional (MHN) del Uruguay, situándolos en un contexto más amplio con información relativa al panorama museístico nacional
Probabilistic Bayesian Neural Networks for olive phenology prediction in precision agriculture
No full textPlant phenology is the study of cyclical events in a plant life cycle such as leaf bud burst, flowering, and fruiting. In this article the problem of olive phenology prediction is addressed through the use of Deep Learning. Although Neural Networks have already been used in this area, to the best of our knowledge, this is the first implementation of Probabilistic Bayesian Neural Networks for olive phenology prediction. This architecture gives particular emphasis to estimating the model uncertainty, both aleatoric and epistemic. The Bayesian Inference method, more precisely the Variational Inference one, is compared with the Monte Carlo Dropout technique, which is known to be a less computationally intensive approximation of Variational Inference. For validation purposes, models performance is compared to the state-of-the-art results
Ab Initio Molecular Dynamics Simulations of Methylammonium Lead Iodide Perovskite Degradation by Water
No full textProtecting organohalide perovskite thin films from water and ambient humidity represents a paramount challenge for the commercial uptake of perovskite solar cells and, in general, of related optoelectronic devices. Therefore, understanding the perovskite/water interface is of crucial importance. As a step in this direction, here we present ab initio molecular dynamics simulations aimed at unraveling the atomistic details of the interaction between the methylammonium lead iodide (MAPbI(3)) perovskite surfaces and a liquid water environment. According to our calculations, MAI-terminated surfaces undergo a rapid solvation process, driven by the interaction of water molecules with Pb atoms, which prompts the release of I atoms. PbI2-terminated surfaces, instead, seem to be more robust to degradation, by virtue of the stronger (shorter) Pb I bonds formed on these facets. We also observe the incorporation of a water molecule into the PbI2-terminated slab, which could represent the first step in the formation of an intermediate hydrated phase. Interestingly, PbI2 defects on the PbI2-terminated surface promote the rapid dissolution of the exposed facet. Surface hydration, which is spontaneous for both MAI- and PbI2-terminated slabs, does not modify the electronic landscape of the former, while the local band gap of the PbI2-exposing model widens by similar to 0.3 eV in the interfacial region. Finally, we show that water incorporation into bulk MAPbI(3) produces almost no changes in the tetragonal structure of the perovskite crystal (similar to 4% volume expansion) but slightly opens the band gap. We believe that this work, unraveling some of the atomistic details of the perovskite/water interface, may inspire new interfacial modifications and device architectures with increased stabilities, which could in turn assist the commercial uptake of perovskite solar cells and optoelectronic devices
Protecting Animals 36: Author Witi Ihimaera
No full textIn this very special episode of Knowing Animals I am joined by beloved New Zealand author Witi Ihimaera. Witi has written many books featuring nonhuman animals. He offers us a non-colonial lens through which to think about the human/nonhuman relationship
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Modeling ZnS and ZnO Nanostructures: Structural, Electronic, and Optical Properties
No full textWe report the computational modeling of ZnS
and ZnO nanostructures by defining realistic nanoparticle models
∼1.5 nm sized for each material and investigating their structural,
electronic, and optical properties by means of DFT/TDDFT
calculations. To provide a direct comparison of calculated data to
experimentally characterized nanoparticles, 3D (ZnX)111 nanoclusters
of prismatic shape have been set up starting from the bulk
wurtzite (X = O, S), with two different saturation patterns of the
polar surfaces. The investigated models have been optimized by
means of CarParrinello molecular dynamics and local geometry
optimization techniques. The investigated systems exhibit a
well-opened HOMOLUMO energy gap, without any artificial
intraband-gap states. TDDFT calculation of the lowest excitation
energies are in excellent agreement, within 0.1-0.2 eV, with the experimental absorption onsets reported for similarly sized ZnO
and ZnS nanoparticles (3.70 and 4.40 eV, respectively). We have also investigated the electronic structure of the considered
nanoparticles, with reference to the valence band structure, finding calculated binding energies for the Zn d-shell to be only slightly
displaced toward lower values compared to experimental values, possibly due to quantum confinement effects. This work provides
the required computational framework for modeling ZnX and in general II-VI semiconductor nanomaterials, opening the way to
simulation of ligand/semiconductor interactions
Author in Essay by I. A. Goncharov “Pepiniere”
No full textFeatures of the embodiment of the author’s position in the essay by I. A. Goncharov “Pepiniere” are considered. The relevance of the study is due to the poorly studied poetics of this work. A review of the scientific literature on relevant topics is performed. Methodological and theoretical definitions are given. The scientific novelty of the article is in the fact that for the first time attention is paid to artistic techniques that allow to identify the author's position in the specified literary text. The author of the article grounds her opinion from the fact that, despite the dominance of the subjective point of view, other characters’ views stand out in the work. It is concluded in the study that the text of the work represents a biographical author and author-creator. It was established that the position of the author-creator is expressed through the title, epigraphs, which are quotes, as well as through different points of view, including the author-character, the author-narrator, the characters of the work. The author of the article dwells in detail on different ways of expressing the points of view of the author-character and the author-narrator. It is proved that the point of view of the author-character and the author-narrator can intersect, they are interchanged. The author's development of the term comic “point of view” is presented in the article
- …
