The tourist cruise industry and its impact on South America

The global tourist cruise industry has been experiencing sustained growth for quite some time; the industry's future prospects are promising, due to good profitability and a reduction in costs achieved thanks to use of ever larger ships, which are making this new form of tourism accessible to more and more people.South American destinations have been visited by a wide range of cruise operators, reflecting the expansion of this industry worldwide; it is necessary that players in the industry take advantage of this opportunity to provide services that employ substantial numbers of people and develop port facilities in order to meet the requirements of ships and tourists alike, thereby heading off competition from other routes.

ICT and gender

Information and communications technologies: essential tools for achieving gender equality. By UN-WOMEN, Andean Sub-Regional Office. -- “Training telecentre operators as technology leaders in their social environment is an ongoing task”, interview with Olga Paz Martínez. -- For an information society with gender equity. By Dafne Sabanes Plou. -- “Including women in ICT can make a big difference in narrowing the digital divide”, interview with Zoraida Franco. -- “We see the potential of ICT for rearranging family communication networks”, interview with Juan Eduardo Rojas .-- “ICT might be the most tangible tool we have right now to fight gender discrimination”, interview with Martin Hilbert.

Controle químico da broca das meliaceas Hypsipyla grandella zeller (Lepidoptera: pyralidae) em mogno sul americano (Swietenia macrophylla King)

Pós-graduação em Ciência Florestal - FCA

Some mathematical aspects and scattering amplitudes in the pure spinor formalism

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

De sitter relativity: foundationss and some physical implications

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

SPECTRUM OF STOCHASTIC ADDING MACHINES AND FIBERED JULIA SETS

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Procedures to Evaluate the Efficiency of Protective Clothing Worn by Operators Applying Pesticide

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effect of the interfacial area measurement parameters on the push-out strength between fiber post and dentin

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Anomalous gauge couplings from composite Higgs and warped extra dimensions

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Stringent limits on top-quark compositeness from t(t)over-bar production at the Tevatron and the LHC

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Covariant map between Ramond-Neveu-Schwarz and pure spinor formalisms for the superstring

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

The quest for an intermediate-scale accidental axion and further ALPs

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Three-point functions and su(1 vertical bar 1) spin chains

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Pure Spinors in AdS and Lie Algebra Cohomology

We show that the BRST cohomology of the massless sector of the Type IIB superstring on AdS(5) x S (5) can be described as the relative cohomology of an infinite-dimensional Lie superalgebra. We explain how the vertex operators of ghost number 1, which correspond to conserved currents, are described in this language. We also give some algebraic description of the ghost number 2 vertices, which appears to be new. We use this algebraic description to clarify the structure of the zero mode sector of the ghost number two states in flat space, and initiate the study of the vertices of the higher ghost number.

Effects of litter manipulation in a tropical Eucalyptus plantation on leaching of mineral nutrients, dissolved organic nitrogen and dissolved organic carbon

Although many studies have shown that soil solution chemistry can be a reliable indicator of biogeochemical cycling in forest ecosystems, the effects of litter manipulations on the fluxes of dissolved elements in gravitational soil solutions have rarely been investigated. We estimated the fluxes of NH4-N, NO3-N, K, Ca, Mg, Na, Cl, dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) over the first two years after re-planting Eucalyptus trees in the coastal area of Congo. Two treatments were replicated in two blocks after clear-cutting 7-year-old stands: in treatment R, all the litter above the mineral soil was removed before planting, and in a double slash (DS) treatment, the amount of harvest residues was doubled. The soil solutions were sampled down to a depth of 4 m and the water fluxes were estimated using the Hydrus 1D model parameterized from soil moisture measurements in 4 plots. Isotopic and spectroscopic analytical techniques were used to assess the changes in dissolved organic matter (DOM) properties throughout the transfer in the soil. The first year after planting, the fluxes of NH4-N, K, Ca, Mg, Na, Cl and DOC in the topsoil of the DS treatment were 2-5 times higher than in R, which showed that litter was a major source of dissolved nutrients. Nutrient fluxes in gravitational solutions decreased sharply in the second year after planting, irrespective of the soil depth, as a result of intense nutrient uptake by Eucalyptus trees. Losses of dissolved nutrients were noticeably low in these Eucalyptus plantations despite a low cation exchange capacity, a coarse soil texture and large amounts of harvest residues left on-site at the clear cut in the DS treatment. All together, these results clarified the strong effect of litter manipulation observed on eucalypt growth in Congolese sandy soils. DOM fluxes, as well as changes in delta C-13, C:N and aromaticity of DOM throughout the soil profile showed that the organic compounds produced in the litter layer were mainly consumed by microorganisms or retained in the topsoil. Below a depth of 15 cm, most of the DOC and the DON originated from the first 2 cm of the soil and the exchanges between soil solutions and soil organic matter were low. (C) 2014 Elsevier B.V. All rights reserved.