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Search Results: 1 - 10 of 129654 matches for " Alice T;Campos "
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DELFOS, um espa o construído pela pesquisa
Moreira, Alice Therezinha Campos
Letras de Hoje , 2010,
Abstract: O DELFOS, Espa o de Documenta o e Memória Cultural, criado em 2008 pela PUCRS, reúne documentos e pe as dos 39 acervos originários das faculdades de Letras, Comunica o Social, Filosofia e Ciências Humanas – História e Arquitetura, visando à preserva o, ao estudo e à divulga o desses objetos culturais. Este texto é um breve registro da história dos grupos de pesquisa que se dedicaram à cria o dos acervos que hoje constituem o DELFOS.
Diversidade de Coccinellidae (Coleoptera) em plantas aromáticas (Apiaceae) como sítios de sobrevivência e reprodu??o em sistema agroecológico
Lixa, Alice T;Campos, Juliana M;Resende, André L S;Silva, Joice C;Almeida, Maxwell M T B;Aguiar-Menezes, Elen L;
Neotropical Entomology , 2010, DOI: 10.1590/S1519-566X2010000300007
Abstract: studies show that apiaceae may provide concentrated vital resources for predator insects, stimulating their abundance, diversity and persistence in agricultural systems, thereby increasing their efficiency as biological control agents. among the predatory insects, coccinellidae (coleoptera) on many different species both as larvae and adults, complementing their diet with pollen and/or nectar. this study aimed to determine the diversity and relative abundance of coccinellidae species visiting plants of anethum graveolens (dill), coriandrum sativum (coriander) and foeniculum vulgare (sweet fennel) (all apiaceae), particularly in their blooming seasons, and to evaluate the potential of these aromatic species for providing the resources for survivorship and reproduction of coccinelids. coccinellids were collected by removal of samplings from september to october, 2007. besides one unidentified species of chilocorinae, five species of coccinellinae were collected: coleomegilla maculata degeer, coleomegilla quadrifasciata (sch?nherr), cycloneda sanguinea (l.), eriopis connexa (germar) and hippodamia convergens guérin-meneville. dill provided a significant increase in the abundance of coccinellids as compared to coriander and sweet fennel. these aromatic species were used by coccinellids as survival and reproduction sites, providing food resources (pollen and/or prey), shelter for larvae, pupae and adults, and mating and oviposition sites as well.
Natural variability in Arabidopsis thaliana germplasm response to Xanthomonas campestris pv. campestris
Carmo, Lílian S.T.;Candido, Elizabete S.;Campos, Pollyanna F.;Quezado-Duval, Alice Maria;Leonardecz, Eduardo;Lopes, Carlos A.;Quirino, Betania F.;
Fitopatologia Brasileira , 2007, DOI: 10.1590/S0100-41582007000200001
Abstract: this work aimed to study the interaction between the model plant arabidopsis thaliana and xanthomonas campestris pv. campestris (xcc), the pathogen responsible for black rot of crucifers. the response of 32 accessions of a. thaliana to the brazilian isolate of xcc cnph 17 was evaluated. no immunity-like response was observed. "cs1308", "cs1566" and "cs1643" grown in continuous light were among the accessions that showed strongest resistance when inoculated with 5 x 106 cfu/ml. in contrast, "cs1194" and "cs1492" were among the most susceptible accessions. similar results were obtained when plants were grown under short-day conditions. to quantify the differences in disease symptoms, total chlorophyll was extracted from contrasting accessions at different time points after inoculation. chlorophyll levels from controls and xcc inoculated plants showed a similar reduction in resistant accessions, whereas xcc-inoculated susceptible accessions showed a greater reduction compared to controls. to test the specificity of resistance, accessions cs1308, cs1566, cs1643 and cs1438 (which showed partial resistance to cnph 17), were inoculated with a more aggressive isolate of xcc (cnph 77) and ralstonia solanacearum. among the accessions tested, "cs1566" was the most resistant to xcc cnph 77 and also displayed resistance to r. solanacearum. accessions cs1308, cs1566 and cs1643 were also inoculated with a high titer of xcc cnph 17 (5 x 108 cfu/ml). no collapse of tissue was observed up to 48 h after inoculation, indicating that a hypersensitive response is not involved in the resistance displayed by these accessions.
Simulation of Seawater Intrusion in Coastal Confined Aquifer Using a Point Collocation Method Based Meshfree Model  [PDF]
Alice Thomas, T. I. Eldho, A. K. Rastogi
Journal of Water Resource and Protection (JWARP) , 2016, DOI: 10.4236/jwarp.2016.84045
Abstract: Seawater intrusion caused by groundwater over-exploitation from coastal aquifers poses a severe problem in many regions. Formulation of proper pumping strategy using a simulation model can assure sustainable supply of fresh water from the coastal aquifers. The focus of the present study is on the development of a numerical model based on Meshfree (MFree) method to study the seawater intrusion problem. For the simulation of seawater intrusion problem, widely used models are based on Finite Difference (FDM) and Finite Element (FEM) Methods, which demand well defined grids/meshes and considerable pre-processing efforts. Here, MFree Point Collocation Method (PCM) based on the Radial Basis Function (RBF) is proposed for the simulation. Diffusive interface approach with density-dependent dispersion and solution of flow and solute transport is adopted. These equations are solved using PCM with appropriate boundary conditions. The developed model has been verified with Henry’s problem, and found to be satisfactory. Further the model has been applied to another established problem and an attempt is made to examine the influence of important system parameters including pumping and recharge on the seawater intrusion. The PCM based MFree model is found computationally efficient as preprocessing is avoided when compared to other numerical methods.
Tolerance of Sexual Diversity, Gender Equity, and Sexual and Reproductive Rights: Determining Factors of Sexual Education and Awareness in the New Millennium  [PDF]
Miguel Barbosa Fontes, Rodrigo Campos Crivelaro, Alice Margini Scartezini, David Duarte Lima, Alexandre de Araújo Garcia, Rafael Tsuyoshi Fujioka
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.715204
Abstract: The objective of the research was to evaluate the level of sexual education and aware- ness of Brazilian youth regarding sexual diversity, gender equity, and sexual and reproductive rights. The study was approved by the ethics committee of the School of Medicine of University of Brasilia. The Pan American Health Association and the Department of STDs/HIV-AIDS and Viral Hepatitis of the Brazilian Ministry of Health supported this study, and Caixa Seguradora funded the research. Household interviews were conducted with 1208 youth aged 18 to 29 years old, based on a probability sample in 15 states and the Federal District. The research margin of error, standardized regionally and nationally, was 2.8%. A sexual awareness scale was generated, incorporating 15 variables for sexual diversity, gender equity, and sexual and reproductive rights. Adjusted linear regression models were created to identify socio-demographic determinants explaining the variance in the sexual awareness scale. The mean on the scale was 7.8 points. Gender, religious affiliation and education were significantly associated with variation in levels of sexual awareness. As for social determinants, having teachers as the main source of sexuality education, accessing the internet, having an interest in learning, not participating in religious groups, having frequent conversations with parents, frequency of sexual intercourse, and confidence in one’s sexual health were all positively associated with higher levels of sexual awareness. Based on socio-demographic determinants positively associated with variations in levels of sexual awareness, interventions should be promoted for reducing stigma and gender inequity, and increasing awareness of sexual and reproductive rights among Brazilian youth.
DYNAMIC RESPONSE OF SEISMORESISTANT BUILDING FRAMES
Alice T V,Najma Nainan
International Journal of Engineering Science and Technology , 2012,
Abstract: Structures on the earth are generally subjected to two types of load: static and dynamic. Static loads are constantwith time while dynamic loads are time- varying. In general, the majority of civil engineering structures aredesigned with the assumption that all applied loads are static. The effect of dynamic load is not consideredbecause the structure is rarely subjected to dynamic loads; more so, its consideration in analysis makes thesolution more complicated and time consuming. This feature of neglecting the dynamic forces may sometimesbecome the cause of disaster, particularly, in case of earthquake. Reinforced concrete (RC) shear walls are usedin buildings to resist lateral forces due to wind and earthquakes. They are usually provided between columnlines, in stair wells, lift wells, and in shafts that house other utilities. Shear walls provide lateral load resistanceby transferring the wind or earthquake loads to the foundation. Besides, they impart lateral stiffness to thesystem and also carry gravity loads. A well-designed system of shear walls in a building frame improves its seismic performance gnificantly. Safety and minimum damage level of a structure could be the prime requirement of tall buildings. To meet these requirements, the structure should have adequate lateral strength, lateral stiffness, and sufficient ductility. Among the various structural systems, shear wall-concrete frame could be a point of choice for the designer. Hence, the present study include: the effect of height of shear wall in the dynamic response of building frame
K0s-K0s correlations in 7 TeV pp collisions from the ALICE experiment at the LHC
T. J. Humanic,for the ALICE Collaboration
Physics , 2011, DOI: 10.1088/0954-3899/38/12/124058
Abstract: Identical neutral kaon pair correlations are measured in 7 TeV pp collisions in the ALICE experiment. K0s-K0s correlation functions are formed in 3 multiplicity X 4 kT bins. The femtoscopic kaon source parameters Rinv and lambda are extracted from these correlation functions by fitting a (femtoscopy) X (PYTHIA) model to them, PYTHIA accounting for the non-flat baseline found in pp collisions. Source parameters are obtained from a fit which includes quantum statistics and final-state interactions of the a0/f0 resonance. K0s-K0s correlations show a systematic increase in Rinv for increasing multiplicity bin and decreasing Rinv for increasing kT bin as seen in pi-pi correlations in the pp system, as well as seen in heavy-ion collisions. Also, K0s-K0s correlations are observed to smoothly extend this pi-pi Rinv behavior for the pp system up to about three times higher kT than the kT range measured in pi-pi correlations.
Event-by-event mean p_T fluctuations in pp and Pb-Pb collisions measured by the ALICE experiment at the LHC
S. T. Heckel,for the ALICE collaboration
Physics , 2011, DOI: 10.1088/0954-3899/38/12/124095
Abstract: Non-statistical event-by-event fluctuations of the mean transverse momentum of charged particles in pp and Pb-Pb collisions are studied using the ALICE experiment at the LHC. Little collision energy dependence is observed in pp. The data indicate a common scaling behaviour with event multiplicity from pp to semi-central Pb-Pb collisions. In central Pb-Pb, the results deviate from this trend, exhibiting a significant reduction of the fluctuation strength. The results are compared with measurements in Au-Au collisions at lower energies and with Monte Carlo simulations.
Event-by-event mean p_T fluctuations in pp and Pb-Pb collisions at the LHC
S. T. Heckel,for the ALICE Collaboration
Physics , 2015, DOI: 10.1051/epjconf/20159008006
Abstract: The ALICE detector at the LHC is used to study the properties of the Quark-Gluon Plasma produced in heavy-ion collisions. As a reference measurement, also the analysis of proton-proton (pp) collisions is very important. In the study presented here, event-by-event fluctuations of the mean transverse momentum are analysed in pp collisions at sqrt(s) = 0.9, 2.76 and 7 TeV, and Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV as a function of the charged-particle multiplicity. In both systems, dynamical fluctuations beyond the statistical expectation are observed. In pp collisions, no significant dependence on collision energy is found, even in comparison to inclusive results at much lower collision energies. Likewise, central A-A collisions show only little dependence on collision energy. The multiplicity dependence observed in peripheral Pb-Pb data is in agreement with that in pp collisions. Going to more central Pb-Pb collisions, a clear deviation from this trend is found, reaching a significant reduction of the fluctuations in most central collisions. Comparisons to Monte Carlo event generators show good agreement in pp, but rather large differences in Pb-Pb collisions.
Mutual information after a local quench in conformal field theory
Curtis T. Asplund,Alice Bernamonti
Physics , 2013, DOI: 10.1103/PhysRevD.89.066015
Abstract: We compute the entanglement entropy and mutual information for two disjoint intervals in two-dimensional conformal field theories as a function of time after a local quench, using the replica trick and boundary conformal field theory. We obtain explicit formulae for the universal contributions, which are leading in the regimes of, for example, close or well-separated intervals of fixed length. The results are largely consistent with the quasiparticle picture, in which entanglement above that present in the ground state is carried by pairs of entangled, freely propagating excitations. We also calculate the mutual information for two disjoint intervals in a proposed holographic local quench, whose holographic energy-momentum tensor matches the conformal field theory one. We find that the holographic mutual information shows qualitative differences from the conformal field theory results and we discuss possible interpretations of this.
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