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Search Results: 1 - 10 of 228428 matches for " Rúter;Alvarez "
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Levantamento do estado nutricional de canaviais de S?o Paulo, pela análise foliar
Gallo, J. Romano;Hiroce, Rúter;Alvarez, Raphael;
Bragantia , 1968, DOI: 10.1590/S0006-87051968000200012
Abstract: a leaf analysis survey of sugar cane plantations in s?o paulo was conducted with twelve essential plant nutrients. these included sulfate--sulfur and total n, p, k, ca, mg, fe, mn, cu, zn, b and mo. samples consisting of leaf blades +3 for the 2 major commercial varieties co. 419 and cb. 41/76 were collected in 32 counties from 89 fields when the cane was 4 and 9 months old, and from 69 groves of the ratoon cane crop, when 4 to 5 months of age. the analyses were carried out on the 8 middle inches of the leaf blades. only lamina was used. the results indicated clear-cut differences in leaf-nutrient contents attributed to the following variables: age of the cane at sampling, type of crop (plant or ratoon canes) and varieties. in general, the ranges in the levels of the elements in the blades for both varieties in all locations were very wide. nitrogen had the smallest and molybdenum the largest variation, among the different nutrient elements analyzed. based on the frequency distribution of leaf nutrient content, it was noted that a higher percentage of sugar cane plantations was found to have lower levels in the following decreasing order: k, mg, n, p, s and fe.
Submarine topography and faulting in Bahía de Banderas, Mexico
R. Alvarez
Geofísica internacional , 2007,
Abstract: A digital elevation model of Bahía de Banderas and its offshore continuation to the Middle America Trench (MAT) is built from a data set of 6872 bathymetric soundings. Two new, offshore basins and several, previously unknown faults within the bay are also identified. The south flank of Banderas canyon is considerably steeper than the north one. This asymmetry and the seismic activity present lead to propose that Banderas Canyon has a half-graben structure of the fault growth type, and reverse drag geometry, which originates in an extensional basin oriented N-S. The canyon is divided in two sections that trend in different directions. The older section of the canyon, trending E-W, is probably Late Miocene; the associated Banderas Fault is suggested to extend westward, down to the MAT along a section that complements that of the half-graben. The section of Banderas Canyon trending NE and continuing into Banderas Valley is identified as a younger portion of the structure. The older and the younger portions of the canyon appear to be active presently. A group of faults also trending NE seem to be associated with the change in direction of the canyon. These results support the hypothesis that the structure of Banderas Canyon is a half-graben, and strengthen the idea that it is the limit between the region to the north that underwent extension in the Miocene, and the region to the south that did not experienced it.
Caracas: una ciudad de múltiples indefiniciones
Alvarez, R.
CONHISREMI , 2009,
Abstract: The city of Caracas is defined as a unit in space with a complex administrative organization, where a wide diversity of executive authorities coexists (governors, mayors, etc) at different levels and from different entities (Federal District and Miranda State) mixed in an undefined political and administrative space. The main argument for the creation of the Chief Town District was to warrant the city governability and give a chance to enhance decentralization. The final form of this idea, included in the Republic Constitution in 1999, did not solve any of these problems but make them deeper. It is necessary to pose this discussion again recalling the original arguments of the proposers aimed to create a two level govern and then consider a new inclusion in the Constitution to support new changes in the territorial and political division of the country.
Politics in the Western Maya Region (II): Emblem Glyphs
ró,ter;
Estudios de cultura maya , 2012,
Abstract: in a series of articles i reflect on the use of various expressions which are connected to what we call the political in the inscriptions of the classic maya western region. these words express ideas and concepts which help to understand the intricate details of the interactions between the political entities and their internal organisations in the classic maya lowlands. in this article i investigate the meaning of emblem glyphs. i suggest that originally they were toponyms but later on they became titles of origin which indicated descendance from a common origin place.
Politics in the Western Maya Region (I): Ajawil/Ajawlel and Ch'e'n
ró,ter;
Estudios de cultura maya , 2011,
Abstract: in a series of articles i reflect on the use of various expressions which are connected to what we call the political in the inscriptions of the classic maya western region. these words express concepts which help to understand the intricate details of the interactions between the political entities and their internal organisations in the classic maya lowlands. words such as 7ajawil, 7ajawlel, the kennings built on the base of ch'e7n (cave, pond), the emblem glyphs and titles will be examined in light of what they tell us about the functioning of the political organisation of the classic period in a constrained region.
A pszicholingvisztikai kísérletek helye és szerepe a fogalmi metaforaelméletben
Csatár,ter
Argumentum , 2010,
Abstract: The present paper investigates the methodological relation between psycholinguistic experiments and conceptual metaphor theory. By analysing metaphor experiments I argue that narrowing down psycholinguistic experiments to a corroborative, that is, verifying function induces many problems in conceptual metaphor theory. The paper presents the emerging problems through sample analyses and suggests the introduction of methodological principles through the observance of which these problems could be eliminated from research. By applying the suggested principles the paper finally argues for the integrative use of experimental and linguistic devices.
Politics in the Western Maya Region (II): Emblem Glyphs
terró
Estudios de cultura maya , 2012,
Abstract: In a series of articles I reflect on the use of various expressions which are connected to what we call the political in the inscriptions of the Classic Maya Western Region. These words express ideas and concepts which help to understand the intricate details of the interactions between the political entities and their internal organisations in the Classic Maya Lowlands. In this article I investigate the meaning of emblem glyphs. I suggest that originally they were toponyms but later on they became titles of origin which indicated descendance from a common origin place. En una serie de artículos investigo el uso de varias palabras en las inscripciones mayas de la época Clásica de la Región Occidental que se conectan con lo que nosotros llamamos "política". Estas palabras expresan ideas y conceptos que ayudan a entender los matices de las relaciones entre las entidades políticas de las Tierras Bajas Mayas y su organización interna. En este artículo investigo el significado de los glifos emblema. Propongo que originalmente fueron topónimos y después llegaron a ser títulos de origen que indicaron descendencia común de un lugar original.
Politics in the Western Maya Region (I): Ajawil/Ajawlel and Ch'e'n
terró
Estudios de cultura maya , 2011,
Abstract: In a series of articles I reflect on the use of various expressions which are connected to what we call the political in the inscriptions of the Classic Maya Western Region. These words express concepts which help to understand the intricate details of the interactions between the political entities and their internal organisations in the Classic Maya Lowlands. Words such as 7ajawil, 7ajawlel, the kennings built on the base of ch'e7n (cave, pond), the emblem glyphs and titles will be examined in light of what they tell us about the functioning of the political organisation of the Classic Period in a constrained region. En una serie de artículos como éste investigo el uso de varias palabras en las inscripciones mayas de la época Clásica de la Región Occidental vinculadas con lo que nosotros llamamos "política". Estas palabras expresan conceptos que ayudan a entender los matices de las relaciones entre las entidades políticas de las Tierras Bajas Mayas y su organización interna. Términos como ajaw'ü I ajawlel, los difrasismos con base ch'e'n (cueva, pozo), los glifos emblemas y los títulos serán examinados tomando en cuenta la información que nos proporcionan sobre el funcionamiento de la organización política de la época Clásica en una región restringida.
Lunar detection of ultra-high-energy cosmic rays and neutrinos with the Square Kilometre Array
J. D. Bray,J. Alvarez-Mu?iz,S. Buitink,R. D. Dagkesamanskii,R. D. Ekers,H. Falcke,K. G. Gayley,T. Huege,C. W. James,M. Mevius,R. L. Mutel,R. J. Protheroe,O. Scholten,R. E. Spencer,S. ter Veen
Physics , 2014,
Abstract: The origin of the most energetic particles in nature, the ultra-high-energy (UHE) cosmic rays, is still a mystery. Only the most energetic of these have sufficiently small angular deflections to be used for directional studies, and their flux is so low that even the 3,000 km^2 Pierre Auger detector registers only about 30 cosmic rays per year of these energies. A method to provide an even larger aperture is to use the lunar Askaryan technique, in which ground-based radio telescopes search for the nanosecond radio flashes produced when a cosmic ray interacts with the Moon's surface. The technique is also sensitive to UHE neutrinos, which may be produced in the decays of topological defects from the early universe. Observations with existing radio telescopes have shown that this technique is technically feasible, and established the required procedure: the radio signal should be searched for pulses in real time, compensating for ionospheric dispersion and filtering out local radio interference, and candidate events stored for later analysis. For the Square Kilometre Array (SKA), this requires the formation of multiple tied-array beams, with high time resolution, covering the Moon, with either SKA1-LOW or SKA1-MID. With its large collecting area and broad bandwidth, the SKA will be able to detect the known flux of UHE cosmic rays using the visible lunar surface - millions of square km - as the detector, providing sufficient detections of these extremely rare particles to address the mystery of their origin.
The lunar Askaryan technique: a technical roadmap
J. D. Bray,J. Alvarez-Muniz,S. Buitink,R. D. Dagkesamanskii,R. D. Ekers,H. Falcke,K. G. Gayley,T. Huege,C. W. James,M. Mevius,R. L. Mutel,R. J. Protheroe,O. Scholten,R. E. Spencer,S. ter Veen
Physics , 2015,
Abstract: The lunar Askaryan technique, which involves searching for Askaryan radio pulses from particle cascades in the outer layers of the Moon, is a method for using the lunar surface as an extremely large detector of ultra-high-energy particles. The high time resolution required to detect these pulses, which have a duration of around a nanosecond, puts this technique in a regime quite different from other forms of radio astronomy, with a unique set of associated technical challenges which have been addressed in a series of experiments by various groups. Implementing the methods and techniques developed by these groups for detecting lunar Askaryan pulses will be important for a future experiment with the Square Kilometre Array (SKA), which is expected to have sufficient sensitivity to allow the first positive detection using this technique. Key issues include correction for ionospheric dispersion, beamforming, efficient triggering, and the exclusion of spurious events from radio-frequency interference. We review the progress in each of these areas, and consider the further progress expected for future application with the SKA.
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