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Search Results: 1 - 10 of 593139 matches for " L. A. Moniz; "
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A Guerra do Chaco
Bandeira, L. A. Moniz;
Revista Brasileira de Política Internacional , 1998, DOI: 10.1590/S0034-73291998000100008
Abstract: this article analyses the circumstances that surrounded the chaco war, between paraguay and bolivia, in the first half of the current century. it studies the evolution of the political and economic situation in the region since the war of the triple alliance, stressing also the interests of the neighbouring countries in the dispute of the belligerent countries over the chaco. paraguay and bolivia fought each other in order to control the region guided by economic reasons, mainly for paraguay, and strategic ones, mostly for bolivia, which, by possessing the chaco, would have access to the plata basin and easier drainage to its oil production. the deflagration of the conflict involved more directly the interests of argentina and brazil, two countries that played an important role in the development and in the conclusion of the chaco war.
Estudo pedológico de três perfis da série Guamium
Demattê, J. L. I.;Moniz, A. C.;
Bragantia , 1971, DOI: 10.1590/S0006-87051971000200010
Abstract: this paper presents results of studies on the genesis of three soil profiles, which has been classified as series guamium. this is an ortho dark latosol which has developed from a siltstone of the tubar?o group (carboniferous period). samples studied are from piracicaba, sp. statistical analysis of the sand fraction were performed, as well as, quantitative mineralogical analysis of the clay fraction. according to the sorting coefficient data, the two profiles (pt and p2) are poorer sorting than the third one (p3). both profiles, p1 and p2, have similar mineralogical features. the mean contents of kaolinite and gibbsite of ap to r horizons, decreased from 87 to 50% and from 89% to zero, respectively, while the mica and allophane contents increased from 0 to 28% and from 1.2 to 22.5%, respectively. the profile p3 almost did not present any variation in the mineralogical analysis on depth. the kaolinite content presented an average of 74.8% and the others minerals presented the following averages: gibbsite 6.8%; mica 0.6% and allophane 16.9%. according to both mineralogical analysis of the clay fraction and statistical analysis of the sand fraction, the profiles p1 and p2 are similar and belong to the series guamium, while the profile p3 have different features and does not fit in that series. the following weathering sequence were found from the mineralogical data of the profiles p1 and p2: siltstone -> kaolinite and allophane -> gibbsite.
Gênese e classifica??o de alguns solos da bacia do Ribeir?o Tijuco Preto, Município de Rio das Pedras, SP: I - Análise mineralógica quantitativa da fra??o argila
Escobar, E. H.;Demattê, J. L. I.;Moniz, A. C.;
Bragantia , 1973, DOI: 10.1590/S0006-87051973000100003
Abstract: the four soil profiles studied occur on a toposequence. the less weathered soils, a lithosol-argilite-shale substratum phase (tp-12) and a red-yellow podzolic soil piracicaba variation (tp-13) are located on the lower part of the toposequence. both soils are derived from the same kind of parent material, a siltstone of the corumbataí formation. the more weathered soils, an ortho dark red latosol (tp-17) and a latosol roxo (tp-18) are located on the upper part of the toposequence. the parent material of the latter is igneous basic rock while the former had some contribution of igneous basic rock. according to the weathering mean data obtained, the intensity of weathering is the following: tp-12 < tp-13 < tp-17 < tp-18. there is an increase in the kaolinite content from 31.5% (tp-12) to 74.5% (tp-17) with intermediate values of 52.0% (tp-13) and 70.0% (tp-18) in the coarse clay of b horizon. although the profile tp-18 is slightly less kaolinitic than the tp-17, it is somewhat more weathered, considering it contains 9.2% of gibbsite versus 3.7% in the tp-17. in the profiles tp-12 and tp-17, besides kaolinite, vermiculite, montmorillanite, allophane, mica but not gibbsite were found. in the profiles tp-17 and tp-18, besides kaolinite, allophane, gibbsite, mica, vermiculite but not mont-morillonite were found.
Gênese e classifica??o de alguns solos da bacia do Ribeir?o Tijuco Preto, Município de Rio das Pedras, SP: II - Classifica??o dos solos
Escobar, E. H.;Demattê, J. L. I.;Moniz, A. C.;
Bragantia , 1973, DOI: 10.1590/S0006-87051973000100004
Abstract: in this paper four soil profiles ocurring on a toposequence located in the hydrographic basin of the tijuco preto stream, rio das pedras county in the state of s?o paulo were studied. on the lower part of the toposequence a lithosol-argillite-shale substratum phase (tp-12) and a red-yellow podzolic soil piracicaba variation (tp-13) were found. on the upper part of the toposequence an ortho dark red latosol (tp-17) and a ?latosol roxo? (tp-18) were found. the soils were classified both according to the 7th approximation and the classification of the former brazilian national soil comission. the classifications were based on both chemical and physical data as well as on the morphologic features of the soil profiles. the soil classification at a family level was based on mincralogical data of the same profiles presented in a previous paper.
Quantization of the Bianchi type-IX model in supergravity with a cosmological constant
A. D. Y. Cheng,P. D. D'Eath,P. R. L. V. Moniz
Physics , 1994, DOI: 10.1103/PhysRevD.49.5246
Abstract: Diagonal Bianchi type-IX models are studied in the quantum theory of $ N = 1 $ supergravity with a cosmological constant. It is shown, by imposing the supersymmetry and Lorentz quantum constraints, that there are no physical quantum states in this model. The $ k = + 1 $ Friedmann model in supergravity with cosmological constant does admit quantum states. However, the Bianchi type-IX model provides a better guide to the behaviour of a generic state, since more gravitino modes are available to be excited. These results indicate that there may be no physical quantum states in the full theory of $ N = 1 $ supergravity with a non-zero cosmological constant. are available to be excited. These results indicate that there may be no physical quantum states in the full theory of $ N = 1 $ supergravity with a non-zero cosmological constant.
Quantization of Bianchi Models in N=1 Supergravity with a Cosmological Constant
A. D. Y. Cheng,P. D. D'Eath,P. R. L. V. Moniz
Physics , 1994,
Abstract: We study the quantization of some cosmological models within the theory of N=1 supergravity with a positive cosmological constant. We find, by imposing the supersymmetry and Lorentz constraints, that there are no physical states in the models we have considered. For the k=1 Friedmann-Robertson-Walker model, where the fermionic degrees of freedom of the gravitino field are very restricted, we have found two bosonic quantum physical states, namely the wormhole and the Hartle-Hawking state. From the point of view of perturbation theory, it seems that the gravitational and gravitino modes that are allowed to be excited in a supersymmetric Bianchi-IX model contribute in such a way to forbid any physical solutions of the quantum constraints. This suggests that in a complete perturbation expansion we would have to conclude that the full theory of N=1 supergravity with a non-zero cosmological constant should have no physical states.
Quantization of a Locally Supersymmetric Friedmann Model with Supermatter
A. D. Y. Cheng,P. D. D'Eath,P. R. L. V. Moniz
Physics , 1994, DOI: 10.1142/S0218271895000132
Abstract: The general theory of N = 1 supergravity with supermatter is studied using a canonical approach. The supersymmetry and gauge constraint generators are found. The framework is applied to the study of a Friedmann minisuperspace model. We consider a Friedmann k = + 1 geometry and a family of spin-0 as well as spin-1 gauge fields together with their odd (anti-commuting) spin-1/2 partners. The quantum supersymmetry constraints give rise to a set of first-order coupled partial differential equations for the components of the wave function. As an intermediate stage in this project, we put both the spin-1 field and its fermionic partner equal to zero. The physical states of our simplified model correspond effectively to those of a mini-superspace quantum cosmological model possessing N=4 local supersymmetry coupled to complex scalars with spin-1/2 partners. The different supermatter models are given by specifying a K\"ahler metric for the scalars; the allowed quantum states then depend on the K\"ahler geometries. For the cases of spherically symmetric and flat K\"ahler geometries we find the general solution for the quantum state with a very simple form. However, although they allow a Hartle-Hawking state, they do not allow a wormhole state.
Quantization of a Friedmann-Robertson-Walker model in N=1 Supergravity with Gauged Supermatter
A. D. Y. Cheng,P. D. D'Eath,P. R. L. V. Moniz
Physics , 1995, DOI: 10.1088/0264-9381/12/6/003
Abstract: The theory of N = 1 supergravity with gauged supermatter is studied in the context of a k = + 1 Friedmann minisuperspace model. It is found by imposing the Lorentz and supersymmetry constraints that there are {\seveni no} physical states in the particular SU(2) model studied.
Seqüência de evolu??o de solos derivados do arenito Bauru e de rochas básicas da regi?o noroeste do estado de S?o Paulo
Moniz, A. C.;Carvalho, Adilson;
Bragantia , 1973, DOI: 10.1590/S0006-87051973000100017
Abstract: quantitative mineralogical analysis were carried out in the clay fraction of the b and c horizons of 24 soil profiles developed from the bauru sandstone, as well as in four profiles derived from basic rocks. granulometric analysis was also performed in the same b horizons of the soils developed from the bauru sandstone. the clay fraction of the soils derived from the bauru sandstone presented a wide variation in kaolinite content, from 25% to 90%, along with a decrease in mica content, from 25% to 1% for the lithosol-calcareous sandstone substratum phase and dark-red latosol sandy phase, respectively. based on the mineralogical composition of the typic profiles of the taxonomic units, it was possible to characterize each group according to the kaolinite content of the b horizon. the variation of the mineral was between 30% and 70% for the podzolized soil marília variation, between 70% and 80% for the podzolized soil lins variation, and between 80% and 90% for the dark red latosol sandy phase. gibbsite was not detected in any soil profile. the granulometric analysis showed considerable variation specially among the latosols. the soils, except for four latosol profiles out of 10, are very similar to the bauru sandstone, which seems to indicate that their parent materials were developed from the sandstone itself, through a coluvial and/or pedimentation process. the odd profiles of latosol seem to be related to fluvial terrace deposits. a relationship between the soils derived from the bauru sandstone and the landscape elements, defined by milne and denominated by ruhe, was established. the marília variation was related with the upland region, where the sandstone occurs with no significant drift material, while the lins variation can be related to the pediment backslope, formed on a drift material of coluvial type. finally, the latosol is related to the pediment footslope, develope mainly from a pedimental material. the lithosol-basaltite substratum phase presented kaol
Data-driven approach for creating synthetic electronic medical records
Anna L Buczak, Steven Babin, Linda Moniz
BMC Medical Informatics and Decision Making , 2010, DOI: 10.1186/1472-6947-10-59
Abstract: This paper describes a novel methodology for generating complete synthetic EMRs both for an outbreak illness of interest (tularemia) and for background records. The method developed has three major steps: 1) synthetic patient identity and basic information generation; 2) identification of care patterns that the synthetic patients would receive based on the information present in real EMR data for similar health problems; 3) adaptation of these care patterns to the synthetic patient population.We generated EMRs, including visit records, clinical activity, laboratory orders/results and radiology orders/results for 203 synthetic tularemia outbreak patients. Validation of the records by a medical expert revealed problems in 19% of the records; these were subsequently corrected. We also generated background EMRs for over 3000 patients in the 4-11 yr age group. Validation of those records by a medical expert revealed problems in fewer than 3% of these background patient EMRs and the errors were subsequently rectified.A data-driven method was developed for generating fully synthetic EMRs. The method is general and can be applied to any data set that has similar data elements (such as laboratory and radiology orders and results, clinical activity, prescription orders). The pilot synthetic outbreak records were for tularemia but our approach may be adapted to other infectious diseases. The pilot synthetic background records were in the 4-11 year old age group. The adaptations that must be made to the algorithms to produce synthetic background EMRs for other age groups are indicated.Despite the current push to adopt electronic medical records (EMRs) as the standard for patient records, research concerned with utilizing all the information in EMRs may be compromised because legal restrictions and privacy concerns limit access to EMRs in academic and industrial research settings to a small number of institutions that have access to the full records. For example, any algorithm d
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