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1

Mamíferos carnívoros e sua relação com a diversidade de hábitats no Parque Nacional dos Aparados da Serra, sul do Brasil  

Microsoft Academic Search

Carnivore mammals and their relation with habitat diversity in Aparados da Serra National Park, southern Brazil. A survey of carnivore mammals was accomplished in Aparados da Serra National Park from February 1998 to March 2000. The park has 10,250 ha and is considered a biodiversity core area of the Atlantic Forest Biosphere Reserve in the Rio Grande do Sul State,

Maria de Fátima M. dos Santos; Mateus Pellanda; Ana Cristina Tomazzoni; Heinrich Hasenack; Sandra Maria Hartz

2004-01-01

2

[Diversity of wild and domestic mammal's intestinal helminths from the Caatinga of the Parque Nacional Serra da Capivara, Southeast of Piauí, Brazil].  

PubMed

Biodiversity studies allow ecosystem assessment and monitoring of environmental changes and impacts. Parasite diversity could reflect the host/ parasite coevolutionary process and the environment changes that permit the loss, gain or maintenance of species. This survey used species/morphotypes of helminths eggs found in feces from seven wild mammal species (the groups Dasypodidae and Large Cats, and Tamandua tetradactyla, Cebus apella, Alouatta caraya, Cerdocyon thous, Pecari tajacu) and from two domestic species (Canis familiaris and Sus scrofa), which occur within the Serra da Capivara National Park (PNSC) and surrounding areas in order to analise the diversity of mammal intestinal helminths. This work used the helminthological fauna findings of wild and domestic mammals, to consider a possible helminth flux between these two host groups using Unweighted Pair Group Method with Arithmetic Mean (UPGMA) of the hosts based on helminthological fauna composition. The results indicate that the region of the PNSC still maintains environmental conditions that still keep wild mammal helminthological fauna composition different from the one found for domestic mammals. PMID:20040186

Brandão, Martha Lima; Chame, Marcia; Cordeiro, José Luis Passos; de Miranda Chaves, Sérgio Augusto

2009-12-01

3

Survival of captive-reared Hispaniolan Parrots released in Parque Nacional del Este, Dominican Republic  

USGS Publications Warehouse

We report first-year survival rates of 49 captive-reared Hispaniolan Parrots (Amazona ventralis) released in Parque Nacional del Este, Dominican Republic. Our goal was to learn about factors affecting postrelease survival. Specifically, we tested if survival was related to movements and whether modifying prerelease protocols influenced survival rates. We also estimated survival in the aftermath of Hurricane Georges (22 September 1998). Twenty-four parrots, fitted with radio-transmitters, were released between 14 September and 12 December 1997. Twenty-five more were released between 29 June and 16 September 1998. First-year survival rates were 30% in 1997 and 29% in 1998. Survival probability was related to bird mobility. In contrast to birds released in 1997, none of the 25 parrots released in 1998 suffered early postrelease mortality (i.e., 3-5 days after release). Two adjustments to prerelease protocols (increased exercise and reduced blood sampling) made in 1998 may have contributed to differences in mobility and survival between years. The reduction of early postrelease mortality in 1998 was encouraging, as was the prospect for higher first-year survival (e.g., 30% to 65%). Only one death was attributed to the immediate impact of the hurricane. Loss of foraging resources was likely a major contributor to ensuing mortality. Birds increased their mobility, presumably in search of food. Survival rates dropped 23% in only eight weeks posthurricane. This study underscores the value of standardized prerelease protocols, and of estimating survival and testing for factors that might influence it. Inferences from such tests will provide the best basis to make adjustments to a release program.

Collazo, J. A.; White, Jr. , T. H.; Vilella, F. J.; Guerrero, S. A.

2003-01-01

4

Faunistic catalog of the caddisflies (Insecta: Trichoptera) of Parque Nacional do Itatiaia and its surroundings in southeastern Brazil.  

PubMed

The Atlantic Forest is considered one of the world's biological diversity hotspots, and is increasingly threatened by the rapid destruction and fragmentation of its natural areas. The caddisflies (Trichoptera) of Itatiaia massif, an Atlantic Forest highland area, are inventoried and cataloged here. The catalog is based on examination of bibliographies, field work on many localities of Itatiaia massif (including Parque Nacional do Itatiaia - PNI), and the entomological collection Professor José Alfredo Pinheiro Dutra (DZRJ), Universidade Federal do Rio de Janeiro. A total of 92 species are recorded, representing about 17% of the known Brazilian Trichoptera fauna. Leptoceridae, Hydropsychidae, and Philopotamidae are the families most represented. The high species richness, as well as the remarkable patterns of species distribution, may be related to the characteristics of Mantiqueira mountain range. PMID:22958122

Dumas, Leandro Lourenço; Nessimian, Jorge Luiz

2012-01-01

5

Faunistic Catalog of the Caddisflies (Insecta: Trichoptera) of Parque Nacional do Itatiaia and its Surroundings in Southeastern Brazil  

PubMed Central

The Atlantic Forest is considered one of the world's biological diversity hotspots, and is increasingly threatened by the rapid destruction and fragmentation of its natural areas. The caddisflies (Trichoptera) of Itatiaia massif, an Atlantic Forest highland area, are inventoried and cataloged here. The catalog is based on examination of bibliographies, field work on many localities of Itatiaia massif (including Parque Nacional do Itatiaia — PNI), and the entomological collection Professor José Alfredo Pinheiro Dutra (DZRJ), Universidade Federal do Rio de Janeiro. A total of 92 species are recorded, representing about 17% of the known Brazilian Trichoptera fauna. Leptoceridae, Hydropsychidae, and Philopotamidae are the families most represented. The high species richness, as well as the remarkable patterns of species distribution, may be related to the characteristics of Mantiqueira mountain range.

Dumas, Leandro Lourenco; Nessimian, Jorge Luiz

2012-01-01

6

DINÂMICA ESPACIAL DO USO DA TERRA NA ZONA DE AMORTECIMENTO DO PARQUE NACIONAL DA SERRA DA BOCAINA  

Microsoft Academic Search

The main objective in this research was to explain the conflicts between conservation and land uses in Taquari, São Roque and Barra Grande nestings, located at the damping zone of the park (PNSB). The specific objectives were: to compare the dynamics in land use with the implemented policies, from 1968 to 1999. Data access, historical and socio-economic analysis were estabilished

Laura Jane Gomes; Orlando Pedreschi; Rozely Ferreira dos Santos; Maristela Simões

7

Richard Serra Sculpture: Forty Years  

NSDL National Science Digital Library

Richard SerraâÂÂs work has usually involved very large sculptures, and many of them have tested the limits of museum display techniques. Recently, the Museum of Modern Art mounted a forty-year survey of SerraâÂÂs work, and for those who canâÂÂt make it to New York, this online collection is a nice way to look at some of the pieces featured at the museum.

2007-01-01

8

Par Par Par Par Parque Nacional do Itatiaia  

Microsoft Academic Search

de de J JJ JJaneir aneir aneir aneir aneiro o o o o, Br Br Br Br Brazil. azil. azil. azil. azil. This study was conduced in a second growth woodland close to Itatiaia National Park (22º30'S e 44º30'W), Rio de Janeiro state, Brazil, and aimed to describe the understory bird community living in this area. We sampled three different

Eliana R. Maia-Gouvêa; Élio Gouvêa; Augusto Piratelli

2005-01-01

9

Nuevas adiciones de algas marinas para el Parque Nacional Mochima, Sucre, Venezuela  

Microsoft Academic Search

The marine algal flora from the eastern coast of Mochima National Park, Sucre, Venezuela was studied with a total of 51 taxa identified, including eight new additions of red algae which are Erythrotrichia carnea (Dillwyn) J. Agardh, Sahlingia subintegra (Rosenvinge) Kornmann, Liagora ceranoides Lamouroux, Asparagopsis taxiformis (Delile) Trevisan, Dasya corymbifera J. Agardh, Chondria dasyphylla (Woodward) C. Agardh, Herposiphonia secunda f.

Soraida Silva; Leonor Brito; Andrés Lemus

10

The Serra Pelada Au-PGE deposit, Serra dos Carajás (Pará State, Brazil): geological and geochemical indications for a composite mineralising process  

Microsoft Academic Search

The Serra Pelada Au-PGE-rich deposit is located in the Serra dos Carajás, a leading mining area in Brazil. This region is characterised by a complex geological and structural framework and is affected by deep lateritisation which has lasted for more than 70 Ma. The Serra Pelada deposit is emplaced in a late-Archean low-grade metasedimentary sequence (Rio Fresco\\/Águas Claras Formation) which

Marilena Moroni; Vicente A. Girardi; Alfredo Ferrario

2001-01-01

11

Potassium-argon dates on the Serra Geral Formation of South America  

Microsoft Academic Search

The Serra Geral Formation in the Paraná Basin of South America forms the largest known volcanic development in the world. Stratigraphic evidence indicates that this formation is younger than Upper Triassic and older than Upper Cretaceous, and generally it has been assigned to the Lower Jurassic. Potassium-argon age measurements on plagioclase from two lavas of the Serra Geral Formation yield

Ian McDougall; N. R. Rüegg

1966-01-01

12

Late Quaternary vegetation and climate dynamics in the Serra da Bocaina, southeastern Brazil  

Microsoft Academic Search

Late Quaternary vegetation, fire and climate dynamics were studied by pollen and charcoal analysis in the Serra da Bocaina, in the coastal ranges of southeastern Brazil, Rio de Janeiro and São Paulo States. Samples were taken from two cores, Serra da Bocaina 1 and 2. Seven radiocarbon dates indicate deposits of Late Pleistocene to Holocene age. During the period between

Hermann Behling; Lydie Dupont; Hugh DeForest Safford; Gerold Wefer

2007-01-01

13

Soft computing and hydrogeologic characterization of the Serra Geral-Guarani aquifer system, Parana state, Brazil  

NASA Astrophysics Data System (ADS)

The Self-organizing map (SOM) technique is used to estimate missing hydrogeologic (hydraulic and hydrochemical) properties and evaluate potential connectivity between the Serra Geral and Guarani aquifer system. K-means clustering of SOM neurons is useful for identifying hydrogeologic units (conceptual models) in which the Serra Geral waters are carbonate-calcium and carbonate-magnesium, and Guarani waters are sodium, chloride, fluoride and sulfate as characteristic elements. SOM predictions appear generally consistent with current connectivity models with vertical fluxes from Guarani aquifer strongly influenced by geological structures. Additionally, we identify other new hydrochemical facies in the Serra Geral aquifer indicating areas with potential connections between the two aquifers.

Iwashita, F.; Friedel, M. J.; Ferreira, F. J.; Fraser, S. J.

2011-12-01

14

Isolation and characterization of microsatellite markers in the Serra Spanish mackerel, Scomberomorus brasiliensis  

Technology Transfer Automated Retrieval System (TEKTRAN)

Thirteen nuclear-encoded microsatellites from a genomic DNA library of Serra Spanish mackerel, Scomberomorus brasiliensis, were isolated and characterized. The microsatellites include 10 perfect repeats (8 tetranucleotide and 2 dinucleotide) and 3 imperfect repeats (2 tetranucleotide and 1 dinucleo...

15

The marine red alga Eucheuma serra J. Agardh, a high yielding source of two isolectins  

Microsoft Academic Search

Aqueous ethanolic extracts from five species of the genus Eucheuma (Rhodophyta) i.e. E. serra, E. amakusaensis, E. cottonii,\\u000a E. gelatinae and E. denticulatum, were examined for hemagglutinating activity with vertebrate erythrocytes. All the extracts\\u000a tested agglutinated trypsin-treated sheep and rabbit erythrocytes as well as untreated sheep erythrocytes. From the extract\\u000a of E. serra, which exhibited the highest activity, a lectin

Akihiro Kawakubo; Hiroyuki Makino; Jun-ichi Ohnishi; Hideo Hirohara; Kanji Hori

1997-01-01

16

Long-distance lava correlation in the Paraná volcanic province along the Serra Geral cuesta, southeastern Brazil  

NASA Astrophysics Data System (ADS)

The capability of determining the flow-by-flow stratigraphy and the long-distance correlation of lava flows in large continental volcanic provinces leads to a considerable advance in the understanding of processes related to generation and evolution of the lavas. The Paraná volcanic province is exposed along the Serra Geral cuesta of southern Brazil in a steeply inclined, 1,000-m-high section starting 40-m above sea level. Each of the 10-20 pahoehoe flows and rhyodacite flow units has a unique chemical composition. Integrated with field stratigraphy and gamma-spectrometric measurements, this leads to the establishment of the correct stratigraphic sequence in each of three different vertical sections. The number of flows integrating the three serras is 26 ("serra" is a mountain range in Portuguese). Each serra has basaltic andesites at the base, whereas rhyodacites are intercalated with basaltic andesites at the top. Three basaltic andesite flows and one rhyodacite flow unit are correlated between Serra Umbu and Serra Boa Vista (10 km). In the Serra Faxinal, a thick (170 m) sill at the base correlates with flow 13F, whereas a dike-sill in the Graxaim quarry (24 km distance) correlates with flow 3F. One basaltic andesite and two rhyodacite flow units correlate between Serra Faxinal and Serra Umbu (50 km). The results are most significant for the understanding of large tracts of continental volcanic provinces with use of common geochemical and gamma-spectrometric techniques.

Hartmann, L. A.; Arena, K. R.; Duarte, S. K.; Pertille, J.

2013-04-01

17

Long-distance lava correlation in the Paraná volcanic province along the Serra Geral cuesta, southeastern Brazil  

NASA Astrophysics Data System (ADS)

The capability of determining the flow-by-flow stratigraphy and the long-distance correlation of lava flows in large continental volcanic provinces leads to a considerable advance in the understanding of processes related to generation and evolution of the lavas. The Paraná volcanic province is exposed along the Serra Geral cuesta of southern Brazil in a steeply inclined, 1,000-m-high section starting 40-m above sea level. Each of the 10-20 pahoehoe flows and rhyodacite flow units has a unique chemical composition. Integrated with field stratigraphy and gamma-spectrometric measurements, this leads to the establishment of the correct stratigraphic sequence in each of three different vertical sections. The number of flows integrating the three serras is 26 ("serra" is a mountain range in Portuguese). Each serra has basaltic andesites at the base, whereas rhyodacites are intercalated with basaltic andesites at the top. Three basaltic andesite flows and one rhyodacite flow unit are correlated between Serra Umbu and Serra Boa Vista (10 km). In the Serra Faxinal, a thick (170 m) sill at the base correlates with flow 13F, whereas a dike-sill in the Graxaim quarry (24 km distance) correlates with flow 3F. One basaltic andesite and two rhyodacite flow units correlate between Serra Faxinal and Serra Umbu (50 km). The results are most significant for the understanding of large tracts of continental volcanic provinces with use of common geochemical and gamma-spectrometric techniques.

Hartmann, L. A.; Arena, K. R.; Duarte, S. K.; Pertille, J.

2013-09-01

18

PLANTAS INTRODUCIDAS EN EL PARQUE NACIONAL TORRES DEL PAINE, CHILE ALIEN PLANTS IN TORRES DEL PAINE NATIONAL PARK, CHILE  

Microsoft Academic Search

We report 61 new records of alien plants for Torres del Paine National Park. The park is located in the Magellan Region (49°21'-51°08'S y 73°07'-74°52'O), with an area of 181.414 ha. The study area has 21 families, 65 genera and 85 alien species. The families with the largest number of species are Poaceae (22 spp.), Asteraceae (11 spp.) and Caryophyllaceae

Erwin Domínguez; Arve Elvebakk; Clodomiro Marticorena; Aníbal Pauchard

19

[Environmental evaluation near a fuel vendor within Parque Nacional Morrocoy, Venezuela. II: Water quality, sediments and biota].  

PubMed

This paper is the second part of a base line study carried out in the coastal region near a marine service station located in Morrocoy National Park, Venezuela. Results from a physical and chemical characterization of the water and sediments of four sites located around the service station are presented. The physical and chemical factors measured in water included: temperature, salinity, specific conductance, dissolved oxygen, saturation percentage of dissolved oxygen, pH, total suspended solids, transparency, oil and grease, total residual petroleum hydrocarbon, vanadium and lead, total coliform bacteria, and the presence of coliform bacteria. The factors measured in sediments include: granulometry, organic material, total carbonates, vanadium, lead, oil and grease, and total hydrocarbons. In addition, the amount of vanadium and lead in sample tissue from three species which are abundant and widely distributed in each site was measured in order to evaluate the potential of these species as bio-indicators. The water in the area where this study was conducted is shallow, warm, and thermally homogeneous, with high salinity and normal pH and dissolved oxygen, and supersaturated with oxygen in certain hours in sites adjacent to abundant underwater vegetation. The water is moderately turbid with a tendency towards less dissolved oxygen with increased depth. The estimated values of NMP/100 ml of the coliform fecal organisms is within legal limits even though the total number of water coliforms measured in Site 2 was ten times higher than in Site 1. This increase is associated with the proximity of Site 2 to an outflow of pre-treated sewage. The values of TRPH in the water collected from each site were low and very close to the detection limit (0.8/ml). Vanadium was not found, while lead was detected in 11 of the 12 samples. Compared to the values measured for Site 1, which was the local reference, only one sample had a concentration of three times the maximum baseline. The amount of lead found in all analyzed samples was acceptable, according to the standards set by the State of Washington (maximum value: 292 mg/kg), while the concentration of lead in the sediments around the supply dock were 1.5 to 3.4 times greater than the Dutch norm. It can be concluded that there is no evidence of an accumulation of Va or Pb in the species selected as bioindicators. An observation program is proposed in which variables similar to those measured for this characterization will be studied with some modifications. A more intense sampling of some variables is recommended (lead in water and sediments, total coliform and fecal matter in consecutive samples and in days following a high concentration of visitors) as is the elimination or minimization of other variables. PMID:15266791

Rada, M; Losada, F

2000-12-01

20

Shallow landslide prediction in the Serra de Cubatão, São Paulo  

NASA Astrophysics Data System (ADS)

Various methods are currently used in the space and time prediction of the shallow landslides in a scale basin. Between them, the physically based models, such as dSLAM, SINMAP, SHALSTAB and TRIGRS, which present innumerable advantages associated to the physical description of these processes from mathematical equations. The last two ones had been already applied in different areas, including those under humid tropical conditions, presenting quite satisfactory results. The main objective of this research consists on the prediction of the shallow landslides, using TRIGRS (Transient Rainfall Infiltration and Grid-Based Regional Slope Stability) and SHALSTAB (Shallow Landslide Stability Analysis) models, in a pilot basin, located at Serra do Mar (SP), in Cubatão city. The occurrence of mass movements is common in this region, mainly shallow landslides types, causing a lot of social and economical damages. The evaluation of the efficiency of these models and the analysis of the influence of the topographical and geological parameters in the susceptibility of the area are also focused in this research. To reach objectives, susceptibility sceneries had been stimulated taking into account different mechanical and hydrological values. The influence of topography (elevation, slope gradient, curvature, aspect and contribution area) and geological parameters was analyzed through the percentages of Scars Concentration and the Landslides Potential, both taken from the mapping of the scars in 1985. The susceptibility maps had been validated through these two indices, considering, also, the percentages of areas predicted as unstable without the presence of scars, and of the stable ones with scars. The results had shown a strong topographical control in the shallow landslides distribution, once the scars of these processes concentrated, mainly, between the elevation of 400m and 800m, on convex or rectilinear slope with angles between 40° and 50°, and guided for quadrant N, NE and NW. As for the simulations of susceptibility, it had not been observed significant differences in the prediction of the unstable areas simulated by models TRIGRS and SHALSTAB. It was identified an expressive agreement between the maps of susceptibility and scars in great part of the scenery. However, the use of reduced values of the effective cohesion resulted in overestimation of the unstable areas, seen through the high percentage of areas without the presence of scars. Based on these results, the use of these two models are considered important tools in the prediction of the shallow landslides, mainly, in areas where the mechanical and hydrological data are scarce, as in many areas of Serra do Mar .

Vieira, B. C.; Fernandes, N. F.; Filho, O. Augusto

2009-04-01

21

Mapping soil erosion risk in Serra de Grândola (Portugal)  

NASA Astrophysics Data System (ADS)

Geomorphological processes can pose environmental risks to people and economical activities. Information and a better knowledge of the genesis of these processes is important for environmental planning, since it allows to model, quantify and classify risks, what can mitigate the threats. The objective of this research is to assess the soil erosion risk in Serra de Grândola, which is a north-south oriented mountain ridge with an altitude of 383 m, located in southwest of Alentejo (southern Portugal). The study area is 675 km2, including the councils of Grândola, Santiago do Cacém and Sines. The process for mapping of erosive status was based on the guidelines for measuring and mapping the processes of erosion of coastal areas of the Mediterranean proposed by PAP/RAC (1997), developed and later modified by other authors in different areas. This method is based on the application of a geographic information system that integrates different types of spatial information inserted into a digital terrain model and in their derivative models. Erosive status are classified using information from soil erodibility, slope, land use and vegetation cover. The rainfall erosivity map was obtained using the modified Fournier index, calculated from the mean monthly rainfall, as recorded in 30 meteorological stations with influence in the study area. Finally, the soil erosion risk map was designed by ovelaying the erosive status map and the rainfall erosivity map.

Neto Paixão, H. M.; Granja Martins, F. M.; Zavala, L. M.; Jordán, A.; Bellinfante, N.

2012-04-01

22

Changes in the microflora of Serra cheese: Evolution throughout ripening time, lactation period and axial location  

Microsoft Academic Search

Changes in the microflora and physicochemical characteristics in Serra da Estrela cheese were examined using a three-way factorial design over a 35 day ripening period, throughout the lactation period, and for several slices taken normal to the cheese axis. Lactic acid bacteria were the major components of the microflora during ripening throughout the lactation period, but no statistically significant differences

Angela C. Macedo; M. Luz Costa; F. Xavier Malcata

1996-01-01

23

Biodiversity assessment of benthic macroinvertebrates in altitudinal lotic ecosystems of Serra do Cipó (MG, Brazil)  

Microsoft Academic Search

Five lotic systems of Serra do Cipó, south-east Brazil, were investigated in order to assess the existing diversity of benthic macroinvertebrates, habitats-microhabitats, and the available trophic resources. For each river it was analysed the communities of benthic macroinvertebrates and the com- position of some taxonomic groups (Plecoptera, Ephemeroptera, Trichoptera and Diptera Chirono- midae): the community with Bivalvia Sphaeriidae, Oligochaeta and

N. GALDEAN; M. CALLISTO; F. A. R. BARBOSA

2001-01-01

24

The emerging Brazilian wine industry : Challenges and prospects for the Serra Gaúcha wine cluster  

Microsoft Academic Search

Purpose – The purpose of this paper is to analyse the Brazilian wine industry's capacity for sustained development in an increasingly internationalized competitive environment. The focus is on the Serra Gaúcha wine cluster, where over 80 per cent of the country's wine is produced. Design\\/methodology\\/approach – This case study is descriptive in nature and makes use of secondary sources, in-depth

Jaime Evaldo Fensterseifer

2007-01-01

25

Shallow landslide prediction in the Serra do Mar, São Paulo, Brazil  

Microsoft Academic Search

Various methods are currently used in order to predict shallow landslides within the catchment scale. Among them, physically based models present advantages associated with the physical description of processes by means of mathematical equations. The main objective of this research is the prediction of shallow landslides using TRIGRS model, in a pilot catchment located at Serra do Mar mountain range,

B. C. Vieira; N. F. Fernandes; O. A. Filho

2010-01-01

26

New species of Isotomiella Bagnall, 1939 from Southeast of Brazil (Collembola, Isotomidae)  

PubMed Central

Abstract Two new species of the genus Isotomiella Bagnall, 1939 are described and illustrated, the first: Isotomiella macedoi sp. n., based on males and females, from the “Parque Nacional da Serra dos Órgãos” (Teresópolis municipality, State of Rio de Janeiro) differs from the other by tibiotarsus III thickened and blunt and two antero-lateral chaetae of labrum strongly thickened. The second species Isotomiella uai sp. n. from “Serra da Gandarela”, (Caeté municipality, State of Minas Gerais) differs from the other by presence of short sensilla on antennal IV and tergites, two anterolabral chaetae thickened and falcate mucro.

de Mendonca, Maria Cleide; Abrantes, Eduardo A.; Neves, Ana Carolina R.

2012-01-01

27

Design aspects of the underground structures of the Serra da Mesa Hydroelectric Power Plant  

Microsoft Academic Search

The Serra da Mesa Hydroelectric Power Plant, located in the Tocantins river, 210 km north of Brasilia, Brazil, is under construction and power generation will start in 1998. The installed power capacity is 1,200 MW. This project includes one of the largest underground power plants in Brazil, totaling 550,000 m3 of underground excavations for the hydraulic circuit. The underground hydraulic

J. A. Mello Franco; A. P. Assis; W. J. Mansur; J. C. F. Telles; J. A. F. Santiago

1997-01-01

28

The Late Holocene upper montane cloud forest and high altitude grassland mosaic in the Serra da Igreja, Southern Brazil.  

PubMed

Many soils of the highlands of Serra do Mar, as in other mountain ranges, have thick histic horizons that preserve high amounts of carbon. However, the age and constitution of the organic matter of these soils remain doubtful, with possible late Pleistocene or Holocene ages. This study was conducted in three profiles (two in grassland and one in forest) in Serra da Igreja highlands in the state of Paraná. We performed ?13C isotope analysis of organic matter in soil horizons to detect whether C3 or C4 plants dominated the past communities and 14C dating of the humin fraction to obtain the age of the studied horizons. C3 plants seem to have dominated the mountain ridges of Serra da Igreja since at least 3,000 years BP. Even though the Serra da Igreja may represents a landscape of high altitude grasslands in soils containing organic matter from the late Pleistocene, as reported elsewhere in Southern and Southeastern Brazil, our results indicate that the sites studied are at least from the beginning of the Late Holocene, when conditions of high moisture enabled the colonization/recolonization of the Serra da Igreja ridges by C3 plants. This is the period, often reported in the literature, when forests advanced onto grasslands and savannas. PMID:23828336

Scheer, Maurício B; Curcio, Gustavo R; Roderjan, Carlos V

29

Habitat diversity and benthic functional trophic groups at Serra do Cipó, Southeast Brazil.  

PubMed

The assessment of the diversity of habitats and the characterisation of the functional trophic groups of benthic macroinvertebrate communities of some rivers of Serra do Cipó (MG) were the main objectives of this study. The available trophic resources and the types of substrata were characterised along with the structure and composition of their using functional trophic groups. Serra do Cipó is a watershed divisor of the São Francisco and Doce River basins, including a series of streams and rivers, of good water quality and well preserved ecological characteristics. Samples were collected in Cipó, Peixe and Preto do Itambé rivers, besides the Indaiá and Capão da Mata streams at 26 sampling stations, during the rainy (February) and dry (October) seasons of 1998, using "Kicking nets" of 0.125 mm mesh size. The group of collectors (Baetidae, Leptophlebiidae and Leptohyphidae) was the most abundant, followed by collector-predators (Hydrophilidae, Ceratopogonidae, Chironomidae-Tanypodinae), and detritivorous-herbivores (Oligochaeta). The riparian vegetation, together with the aquatic macrophytes, are the substrata containing the highest richness of functional trophic groups and the higher habitat diversity. The results suggest that the use of functional trophic groups, together with habitat evaluation, are efficient tools in the evaluation of the diversity of benthic macroinvertebrates, particularly in altitudinal lotic ecosystems. PMID:11514893

Callisto, M; Moreno, P; Barbosa, F A

2001-05-01

30

Insights into the morphology of the Serra da Cangalha impact structure from geophysical modeling  

NASA Astrophysics Data System (ADS)

Forward modeling is commonly applied to gravity field data of impact structures to determine the main gravity anomaly sources. In this context, we have developed 2.5-D gravity models of the Serra da Cangalha impact structure for the purpose of investigating geological bodies/structures underneath the crater. Interpretation of the models was supported by ground magnetic data acquired along profiles, as well as by high resolution aeromagnetic data. Ground magnetic data reveal the presence of short-wavelength anomalies probably related to shallow magnetic sources that could have been emplaced during the cratering process. Aeromagnetic data show that the basement underneath the crater occurs at an average depth of about 1.9 km, whereas in the region beneath the central uplift it is raised to 0.5-1 km below the current surface. These depths are also supported by 2.5-D gravity models showing a gentle relief for the basement beneath the central uplift area. Geophysical data were used to provide further constraints for numeral modeling of crater formation that provided important information on the structural modification that affected the rocks underneath the crater, as well as on shock-induced modifications of target rocks. The results showed that the morphology is consistent with the current observations of the crater and that Serra da Cangalha was formed by a meteorite of approximately 1.4 km diameter striking at 12 km s-1.

Vasconcelos, M. A. R.; Wünnemann, K.; Crósta, A. P.; Molina, E. C.; Reimold, W. U.; Yokoyama, E.

2012-10-01

31

Age of ultramafic high-K rocks from Planalto da Serra (Mato Grosso, Brazil)  

NASA Astrophysics Data System (ADS)

The Planalto da Serra ultramafic-alkaline rocks are represented by several plugs, lava-flows and N60-80E trending dykes which are mainly represented by glimmerites, harzburgites and carbonatites. These rocks intrude the Cryogenian basal unit of the Northern Paraguay Belt in the Rio dos Cavalos rift (southeastern part of the Amazonian Craton). 40Ar/39Ar dating on the phlogopite from glimmeritic dykes and plugs yielded an age of ca. 600 Ma, which is consistent with Rb/Sr and Sm/Nd determinations on the other rock-types. These age determinations make it difficult to establish a geochronological and genetic relationship between the Planalto da Serra rocks and the Cretaceous bodies of the "Azimuth 125° Lineament", and it suggests there is a relationship between its emplacement and the beginning of the extensional tectonics responsible for the separation of the Amazonian and Laurentia Cratons. This age also indicates that the onset of the deformation of the Cuiaba Group may be older than 600 Ma.

De Min, Angelo; Hendriks, Bart; Slejko, Francesca; Comin-Chiaramonti, Piero; Girardi, Vicente; Ruberti, Excelso; Gomes, Celso B.; Neder, Renato D.; Pinho, Francisco C.

2013-01-01

32

Mapping and classification of geoforms in the Serra de Grândola (Alentejo, South West, Portugal)  

NASA Astrophysics Data System (ADS)

The study of geomorphic processes is the starting point for development and sustainable land management. These processes may cause risks that represent threats to environment, population and human activities. So, studying its genesis is important to find tools that can mitigate threats. In the last few decades, geographic information systems (GIS) have become an essential tool for environmental management. The integration of digital terrain models in GIS has contributed to improve environmental studies and knowledge, as they are a support for modelling geoforms (terrain units resulting from climate and other natural processes and their interactions with the Earth's surface). In this research, geoforms from the Serra de Grândola area (Alentejo, South West, Portugal) are classified according to the most important physical and structural differences. The methodology is based on the Hammond's hierarchical criteria and in the geographical information related to soft-slopes, local relief and terrain profiles.

Neto Paixão, Helena M.; Granja Martins, Fernando M.; Zavala, Lorena M.; Jordán, Antonio; Pereira, Paulo

2013-04-01

33

Ancient water on asteroid 4 Vesta: evidence from a quartz veinlet in the Serra de Magé eucrite meteorite  

Microsoft Academic Search

The meteorite Serra de Magé, a eucrite inferred to be from the asteroid 4 Vesta, contains quartz veinlets. They are identical to antitaxial or ‘crack-seal’ quartz veinlets in terrestrial rocks, and are extraterrestrial and ancient because they pre-date a 4.40 Ga metamorphism. The quartz was likely deposited from liquid water solutions (as are terrestrial veins); other potential solvents or transport

Allan H. Treiman; Antonio Lanzirotti; Dimitrios Xirouchakis

2004-01-01

34

Shallow landslide prediction in the Serra do Mar, São Paulo, Brazil  

NASA Astrophysics Data System (ADS)

Various methods are currently used in order to predict shallow landslides within the catchment scale. Among them, physically based models present advantages associated with the physical description of processes by means of mathematical equations. The main objective of this research is the prediction of shallow landslides using TRIGRS model, in a pilot catchment located at Serra do Mar mountain range, São Paulo State, southeastern Brazil. Susceptibility scenarios have been simulated taking into account different mechanical and hydrological values. These scenarios were analysed based on a landslide scars map from the January 1985 event, upon which two indexes were applied: Scars Concentration (SC - ratio between the number of cells with scars, in each class, and the total number of cells with scars within the catchment) and Landslide Potential (LP - ratio between the number of cells with scars, in each class, and the total number of cells in that same class). The results showed a significant agreement between the simulated scenarios and the scar's map. In unstable areas (SF?1), the SC values exceeded 50% in all scenarios. Based on the results, the use of this model should be considered an important tool for shallow landslide prediction, especially in areas where mechanical and hydrological properties of the materials are not well known.

Vieira, B. C.; Fernandes, N. F.; Filho, O. A.

2010-09-01

35

Defining the dynamics of groundwater in Serra da Estrela Mountain area, central Portugal: an isotopic and hydrogeochemical approach  

NASA Astrophysics Data System (ADS)

In a multidisciplinary approach, geological, geomorphologic, structural, hydrogeochemical and isotopic surveys were conducted on the Serra da Estrela groundwater system (central Portugal) in order to establish/develop a conceptual circulation model of the Caldas de Manteigas thermomineral system. A detailed study of the isotopic and geochemical composition of surface waters (e.g. Zêzere River), shallow groundwaters (cold dilute springs), and thermomineral waters was carried out to characterize the distribution of isotopes in waters of this mountainous region, and to determine the origin and possible recharge locations of the thermomineral system. Special attention was dedicated to isotopic tracers and their role in the definition of the thermomineral waters’ conceptual model, considering: (1) the ?18O fractionation gradient; (2) the mean isotopic composition of the thermomineral waters in the region; and (3) the estimation of snowmelt contribution as a source of groundwater recharge at Serra da Estrela. The recharge of the thermomineral aquifer takes place on the more permeable zones of the granitic massif, associated with the main tectonic structures, whereas the recharge of the shallow aquifers seems to take place mostly in the plateaus, although another part of the recharge may occur in the slopes of the Zêzere River valley. Une approche multidisciplinaire, géologique, géomorphologique, structurale, avec études hydrogéochimique et isotopique a été conduite sur le système aquifère souterrain de Serra da Estrela (Portugal central) afin de construire un modèle conceptuel de circulation du système thermo minéral de la Caldas de Manteigas. Une étude isotopique et géochimique détaillée de la compositition des eaux de surface (e.g. rivière Zêzere), des eaux superficielles (sources froides diluées), et des eaux thermo minérales, a été effectuée pour caractériser la distribution des isotopes dans les eaux de cette région montagneuse et pour déterminer l’origine et la localisation possible des aires de recharge du système thermo minéral. Une attention spéciale a été portée sur des traceurs isotopiques et sur leur utilité dans la définition du modèle des eaux thermo minérales, considérant (1) le gradient de distribution de ?18O; (2) la composition isotopique moyenne des eaux thermo minérales dans la région; et (3) l’estimation du volume d’eau de fusion de la neige comme source de recharge de la nappe à Serra da Estrela. La recharge de l’aquifère thermo mineral a lieu sur les zones les plus perméables du massif granitique, en liaison avec les principales structures tectoniques, alors que la recharge du système aquifère superficiel semble avoir lieu principalement sur les plateaux, une autre partie de la recharge pouvant avoir lieu sur les pentes de la vallée de la rivière Zêrere. Se realizaron, con un enfoque multidisciplinario, relevamientos geológicos, geomorfológicos, estructurales, hidrogeoquímicos e isotópicos en el Sistema de aguas subterráneas del Serra da Estrela (Portugal central) con el objeto de establecer / desarrollar un modelo conceptual de circulación del sistema termomineral de las Caldas de Manteigas. Se llevó a cabo un estudio detallado de la composición isotópica y geoquímica de la aguas superficiales (por ejemplo el Río Zêzere), aguas subterráneas someras (manantiales fríos diluidos), y aguas termominerales para caracterizar la distribución de isótopos en las aguas de esta región montañosa, y determinar el origen y posibles ubicaciones de recarga del sistema termomineral. Se puso especial atención a los trazadores isotópicos y su rol en la definición del modelo conceptual de las aguas termominerales, considerando: (1) el gradiente de fraccionamiento de ?18O; (2) la composición media isotópica de las aguas termominerales en la región; y (3) la estimación del derretimiento de nieve como una fuente de la recarga de agua subterránea en Serra da Estrela. La recarga del acuífero termomineral ocurre en las zonas más permeables de

Carreira, Paula M.; Marques, José M.; Espinha Marques, Jorge; Chaminé, Helder I.; Fonseca, Paulo E.; Santos, Fernando Monteiro; Moura, Rui M.; Carvalho, José M.

2010-11-01

36

Traditional knowledge of medicinal plants in the serra de mariola natural park, South-eastern Spain.  

PubMed

The present study aims to inventory and analyse the ethnobotanical knowledge about medicinal plants in the Serra de Mariola Natural Park. In respect to traditional uses, 93 species reported by local informants were therapeutic, 27 food, 4 natural dyes and 13 handcrafts. We developed a methodology that allowed the location of individuals or vegetation communities with a specific popular use. We prepared a geographic information system (GIS) that included gender, family, scientific nomenclature and common names in Spanish and Catalan for each species. We also made a classification of 39 medicinal uses from ATC (Anatomical, Therapeutic, Chemical classification system). Labiatae (n=19), Compositae (n=9) and Leguminosae (n=6) were the families most represented among the plants used to different purposes in humans. Species with the most elevated cultural importance index (CI) values were Thymus vulgaris (CI=1.431), Rosmarinus officinalis (CI=1.415), Eryngium campestre (CI=1.325), Verbascum sinuatum (CI=1.106) and Sideritis angustifolia (CI=1.041). Thus, the collected plants with more therapeutic uses were: Lippia triphylla (12), Thymus vulgaris and Allium roseum (9) and Erygium campestre (8). The most repeated ATC uses were: G04 (urological use), D03 (treatment of wounds and ulcers) and R02 (throat diseases). These results were in a geographic map where each point represented an individual of any species. A database was created with the corresponding therapeutic uses. This application is useful for the identification of individuals and the selection of species for specific medicinal properties. In the end, knowledge of these useful plants may be interesting to revive the local economy and in some cases promote their cultivation. PMID:24146454

Belda, A; Zaragozí, B; Belda, I; Martínez, Je; Seva, E

2012-12-31

37

Loxosceles niedeguidonae (Araneae, Sicariidae) a new species of brown spider from Brazilian semi-arid region.  

PubMed

A new species of recluse spider, Loxosceles niedeguidonaesp. n., is described from the Parque Nacional Serra da Capivara, State of Piauí, Brazil. This is the first endemic species described from Brazilian semi-arid environment. The species is included in gaucho group of Gertsch (1967) due to its spermathecal shape and is considered close to Loxosceles chapadensis Bertani, Fukushima & Nagahama, 2010 by the unusual long male palpal tibia, a character not common for species of this group. An updated key for Loxosceles species of gaucho group is presented. PMID:22451789

Gonçalves-de-Andrade, Rute Maria; Bertani, Rogério; Nagahama, Roberto Hiroaki; Barbosa, Maria Fatima Ribeiro

2012-03-16

38

The anti-tumor effect of Euchema serra agglutinin on colon cancer cells in vitro and in vivo.  

PubMed

Eucheuma serra agglutinin (ESA) is a lectin derived from a marine red alga E. serra and binds specifically to mannose-rich sugar chains. Previous reports have indicated that ESA associates with several cancer cells via sugar chains on cell surfaces and induces apoptotic cell death. In this study, we investigated the effect of ESA on Colon26 mouse colon adenocarcinoma cells both in vitro and in vivo. ESA induced cell death against Colon26 cells in vitro, and the expression of caspase-3 and the translocation of phosphatidylserine in ESA-treated Colon26 cells suggested that this cell death was induced through apoptosis. An intravenous injection of ESA significantly inhibited the growth of Colon26 tumors in BALB/c mice; moreover, DNA fragmentation was detected in tumor cells following ESA treatment. These results indicated that ESA is effective as an anti-cancer drug not only in vitro but also in vivo. The side-effects of ESA were not considered to be serious because the decrease in body weight of the mice injected with it was negligible. These observations suggest that ESA has the potential to be an effective anti-tumor drug. PMID:16940804

Fukuda, Yuki; Sugahara, Takuya; Ueno, Masashi; Fukuta, Yusuke; Ochi, Yukari; Akiyama, Koichi; Miyazaki, Tatsuhiko; Masuda, Seizo; Kawakubo, Akihiro; Kato, Keiichi

2006-09-01

39

HEMATOLOGY AND BLOOD CHEMISTRY PARAMETERS DIFFER IN FREE-RANGING MANED WOLVES (CHRYSOCYON BRACHYURUS) LIVING IN THE SERRA DA CANASTRA NATIONAL PARK VERSUS ADJACENT FARMLANDS, BRAZIL  

Microsoft Academic Search

There has been growing interest in the specific impacts of anthropogenic factors on the health of wildlife. This study examined hematology and serum chemistry status of a prominent carnivore, the maned wolf (Chrysocyon brachyurus), living in, on the boundaries to, or on adjacent farmlands to the Serra da Canastra National Park, Brazil. Twenty-eighty wolves were captured, and values were compared

J. A. May-Junior; N. Songsasen; F. C. Azevedo; J. P. Santos; R. C. Paula; F. H. G. Rodrigues; M. D. Rodden; D. E. Wildt; R. G. Morato

40

EFFECT OF TWO DOSES OF eCG ON FERTILITY, PROLIFICACY AND FECUNDITY IN SERRA DA ESTRELA EWES SUBJECTED TO DOUBLE ARTIFICIAL INSEMINATION  

Microsoft Academic Search

The Serra da Estrela ewe belongs to the Bordaleiro group and is the best Portuguese milk breed. It has a good reproductive ability and reproduction is p ossible all year round. Two mating seasons usually occur: the main season is in Spring and the second in Autumn. The aim of this trial was to evaluate the influence of 250 or

J. Barbas; C. Baptista; R. Mascarenhas; A. E. M. Horta

41

Multivariate analysis of the water quality variation in the Serra da Estrela (Portugal) Natural Park as a consequence of road deicing with salt  

Microsoft Academic Search

The concentration of some anions (Cl, F, NO3, and SO4), cations (Na, K, Ca, and Mg), pH and conductivity was determined in seven sampling points in the Serra da Estrela Mountains (Portugal) to verify if the application of road deicing with salt provokes impact in the water quality. Multivariate chemometric data analysis techniques of clustering and factor analysis were used.

Pedro M. S. M. Rodrigues; Ricardo M. M. Rodrigues; Bruno H. F. Costa; António A. L. Tavares Martins

2010-01-01

42

Boletín del Instituto Nacional del Cáncer - 07-20-2010  

Cancer.gov

El doctor Harold Varmus, acompañado de su esposa Constance Casey (centro), presta juramento como director del NCI ante la Secretaria del Departamento de Salud y Servicios Humanos, Kathleen Sebelius, el lunes 12 de julio. (Foto cortesía de Chris Smith) El 12 de julio, el doctor Harold Varmus prestó juramento ante la Secretaria del Departamento de Salud y Servicios Humanos de los Estados Unidos, Kathleen Sebelios, como el decimocuarto director del Instituto Nacional del Cáncer.

43

Magnetic Anisotropic Susceptibility Studies on Impact Structures in the Serra Geral Basalt, Paraná Basin, Brazil  

NASA Astrophysics Data System (ADS)

Studies of magnetic properties of shocked basalt are underway for two impact craters in the 132 Ma Serra Geral basalt of southern Brazil: the Vista Alegre crater (25.95°S, 41.69°W) in the state of Paraná, with a diameter of 12.4 km, and the Vargeão crater (26.81°S, 52.17°W) in Santa Catarina, of 9.5 km. Shatter cones and quartz planar deformation features (pdfs) have been found at both structures. Uplifted crater rims and external ejecta deposits have been removed by erosion at both craters. The interior of the Vista Alegre crater contains ejecta fallback deposits, typically reworked and weathered, and basalts of the crater floor are poorly exposed. In contrast, shocked basalts are exposed across the interior of the Vargeão structure, ejecta fallback deposits have been removed by erosion, and a central domal uplift of quartzose strata from beneath the basalt is found. Discounting the possibility of differential erosion rates, these differences might suggest that the Vargeão is the older of the two structures. Laboratory experiments elsewhere have suggested that major axes of the ellipse of anisotropic susceptibility (K1 major; K3 minor) could be aligned with the direction of propagation of the shockwave accompanying impact processes. Insufficient exposures exist at Vista Alegre to test this hypothesis. Oriented samples along a NNW-trending diametral profile across the better exposed Vargeão structure did not show a radial alignment of either K1 or K3 relative to the centre of that structure. In general, the mean susceptibility at Vargeão is lower towards the center; the degree of anisotropy is low (Pj<1.01), and the highest degree of anisotropy is in basalts adjacent to the central uplift. The shape factor (T) varies considerably (-0.5 (prolate) to +0.7 (oblate)); most magnetofabrics are oblate. Only 3 of 16 sites are prolate, and those are near the crater margin. K3 (minimum) axes are mainly steep, with a mean direction steep and slightly north of the center. K1 (maximum) axes are mainly gently plunging (<25°), with a tendency to preferring NE-SW quadrant alignments in sites along the NNW profile.

Crosta, A. P.; MacDonald, W. D.

2009-12-01

44

Honeybee-collected pollen from five Portuguese Natural Parks: palynological origin, phenolic content, antioxidant properties and antimicrobial activity.  

PubMed

The aim of this study was to determine the palynological origin, phenolic content, antioxidant and antimicrobial properties of pollen from five Portuguese Natural-Parks [Parque Nacional Peneda Gerês (PNPG); Parque Natural do Montesinho (PNM); Parque Natural do Alvão (PNA); Parque Natural da Serra da Estrela (PNSE) and Parque Natural do Douro Internacional (PNDI)]. Eight families were found in the mixture of bee pollen: Rosaceae, Cistaceae, Boraginaceae, Asteraceae, Fagaceae, Ericaeae, Myrtaceae and Fabaceae. The phenolic compounds content, determined by the Folin-Ciocalteu method, varied between 10.5 and 16.8 mg of gallic acid equivalents/g of extract (mg GAE/g) found in bee pollen from PNM and PNDI, respectively. The free radical scavenging measured showed the highest effective extract - PNM with EC(50) 2.16, followed by PND with 2.24 mg/mL. In the ?-carotene bleaching assay the same behaviour as in the DPPH method was verified. We also verified that the presence of pollen differentially affected the growth of bacteria Gram-positive, Gram-negative and yeasts under study, depending this on the microorganism and the pollen used. This is an important study since, as far we know, it is the first time that Portuguese bee pollen from Natural Parks was studied, and their characterization can increase their economic value. PMID:21291944

Morais, Margarida; Moreira, Leandro; Feás, Xesús; Estevinho, Leticia M

2011-02-01

45

Fluoride characterization by principal component analysis in the hydrochemical facies of Serra Geral Aquifer System in Southern Brazil.  

PubMed

Principal component analysis is applied to 309 groundwater chemical data information from wells in the Serra Geral Aquifer System. Correlations among seven hydrochemical parameters are statistically examined. A four-component model is suggested and explains 81% of total variance. Component 1 represents calcium-magnesium bicarbonated groundwaters with long time of residence. Component 2 represents sulfated and chlorinated calcium and sodium groundwaters; Component 3 represents sodium bicarbonated groundwaters; and Component 4 is characterized by sodium sulfated with high fluoride facies. The components' spatial distribution shows high fluoride concentration along analyzed tectonic fault system and aligned on northeast direction in other areas, suggesting other hydrogeological fault systems. High fluoride concentration increases according to groundwater pumping depth. The Principal Component Analysis reveals features of the groundwater mixture and individualizes water facies. In this scenery, it can be determined hydrogeological blocks associated with tectonic fault system here introduced. PMID:19039492

Nanni, Arthur; Roisenberg, Ari; Fachel, Jandyra M G; Mesquita, Gilberto; Danieli, Cristiano

2008-12-01

47

Strict specificity for high-mannose type N-glycans and primary structure of a red alga Eucheuma serra lectin.  

PubMed

We have elucidated the carbohydrate-binding profile of a non-monosaccharide-binding lectin named Eucheuma serra lectin (ESA)-2 from the red alga Eucheuma serra using a lectin-immobilized column and a centrifugal ultrafiltration-high performance liquid chromatography method with a variety of fluorescence-labeled oligosaccharides. In both methods, ESA-2 exclusively bound with high-mannose type (HM) N-glycans, but not with any of other N-glycans including complex type, hybrid type and core pentasaccharides, and oligosaccharides from glycolipids. These findings indicate that ESA-2 recognizes the branched oligomannosides of the N-glycans. However, ESA-2 did not bind with any of the free oligomannoses examined that are constituents of the branched oligomannosides implying that the portion of the core N-acetyl-D-glucosamine (GlcNAc) residue(s) of the N-glycans is also essential for binding. Thus, the algal lectin was strictly specific for HM N-glycans and recognized the extended carbohydrate structure with a minimum size of the pentasaccharide, Man(alpha1-3)Man(alpha1-6)Man(beta1-4)GlcNAc(beta1-4) GlcNAc. Kinetic analysis of binding with a HM heptasaccharide (M5) showed that ESA-2 has four carbohydrate-binding sites per polypeptide with a high association constant of 1.6x10(8) M-1. Sequence analysis, by a combination of Edman degradation and mass analyses of the intact protein and of peptides produced by its enzymic digestions, showed that ESA-2 is composed of 268 amino acids (molecular weight 27950) with four tandemly repeated domains of 67 amino acids. The number of repeats coincided with the number of carbohydrate-binding sites in the monomeric molecule. Surprisingly, the marine algal lectin was homologous to hemagglutinin from the soil bacterium Myxococcus xanthus. PMID:17259190

Hori, Kanji; Sato, Yuichiro; Ito, Kaori; Fujiwara, Yoshifumi; Iwamoto, Yasumasa; Makino, Hiroyuki; Kawakubo, Akihiro

2007-01-26

48

Speckle Interferometry at the Observatorio Astronómico Nacional. IV  

NASA Astrophysics Data System (ADS)

We present speckle interferometric measurements of binary stars performed during September and October of 2009 with the 2.1 m telescope of the Observatorio Astronómico Nacional at SPM (Mexico). We report here the results of 200 measurements of 196 pairs with a primary limiting magnitude of V = 12.3. The measured angular separations range from 0".115 to 5".26. Ninety seven pairs have separations less than 1". The mean error in separation is 0".03 and 1°.5 in position angle. The usual 180° ambiguity was corrected for a majority of position angles by comparison with observations performed by other observers.

Orlov, V. G.; Voitsekhovich, V. V.; Guerrero, C. A.

2012-10-01

49

Genetic Detection of Extended-Spectrum ?-Lactamase-Containing Escherichia coli Isolates from Birds of Prey from Serra da Estrela Natural Reserve in Portugal?  

PubMed Central

Extended-spectrum ?-lactamase-containing Escherichia coli isolates were detected in 32 of 119 fecal samples (26.9%) from birds of prey at Serra da Estrela, and these isolates contained the following ?-lactamases: CTX-M-1 (n = 13), CTX-M-1 plus TEM-1 (n = 14), CTX-M-1 plus TEM-20 (n = 1), SHV-5 (n = 1), SHV-5 plus TEM-1 (n = 2), and TEM-20 (n = 1).

Pinto, Luis; Radhouani, Hajer; Coelho, Celine; Martins da Costa, Paulo; Simoes, Romeo; Brandao, Ricardo M. L.; Torres, Carmen; Igrejas, Gilberto; Poeta, Patricia

2010-01-01

50

Temperature effect correction for the cosmic ray muon data observed at the Brazilian Southern Space Observatory in São Martinho da Serra  

NASA Astrophysics Data System (ADS)

The negative atmospheric temperature effect observed in the muon intensity measured by surface-level detectors is related to the atmospheric expansion during summer periods. According the first explanation given, the path of muons from the higher atmospheric level (where they are generated) to the ground becomes longer, and more muons decay, leading to a muon intensity decrease. A significant negative correlation, therefore, is expected between the altitude of the equi-pressure surface and the muon intensity. We compared measurements of the altitude of 100 hPa equi-pressure surface and data from the multidirectional muon detector installed at the Brazilian Southern Space Observatory in São Martinho da Serra, RS. Significant correlation coefficient were found (up to 0.95) when using data observed in 2008. For comparison, data from the multidirectional muon detector of Nagoya, located in the opposite hemisphere, is studied and an anti-phase in the cosmic ray variation related with the temperature effect is expected between data from detectors of Nagoya and São Martinho da Serra. The temperature influence is higher for the directional channels of Nagoya than for ones of São Martinho da Serra.

Braga, C. R.; Dal Lago, A.; Kuwabara, T.; Schuch, N. J.; Munakata, K.

2013-02-01

51

Um Projeto de Intervenção nos Espaços de Exposições do Planetário do Parque do Ibirapuera  

NASA Astrophysics Data System (ADS)

Cada vez mais a humanidade, em sua imensa maioria, está alheia às próprias conquistas. A insatisfação com esta realidade tem levado muitos pesquisadores, instituições, empresas e governos a procurar formas alternativas de acompanhar e transmitir todo este acervo científico cultural à sociedade, buscando a melhoria da qualidade da divulgação científica e contribuindo para o processo de cultura e alfabetização científica. Não há tempo nem espaço nos limitados planos curriculares do ensino médio e mesmo nos programas de ensino que propiciem a cultura científica e o acompanhamento do vertiginoso progresso científico e tecnológico atual. Neste sentido, a educação formal escolar precisa ser complementada ou acrescida de uma educação informal, extra-escolar, que possa oferecer à sociedade o que a escola não pode oferecer. A interação do público com museus, feiras de ciências, planetários, exposições científicas e/ou culturais é de grande importância para a aquisição e difusão de conhecimentos relacionados ao mundo científico. Reconhecidamente como um modelo de alfabetização científica esses ambientes promovem uma interação social capaz de propiciar de forma efetiva uma melhor relação ensino-aprendizagem com o público. Partindo desta realidade a Universidade Cruzeiro do Sul e a Escola Municipal de Astronomia (EMA) vêm desenvolvendo um projeto de intervenção no espaço em torno do Planetário do Parque do Ibirapuera com o objetivo de se implantar um ambiente de aprendizagem motivador e desafiador que promova a popularização de conteúdos relacionados à astronomia, astrofísica e cosmologia. Busca-se, também, a aproximação e interação do público com exposições que estão sendo implementadas no planetário. Considerando que se trata de um projeto de mestrado em fase inicial o objetivo do presente trabalho é apresentar a concepção básica e os critérios que estão sendo utilizados do ponto de vista pedagógico para as indicações dos objetos e experimentos que serão expostos, procurando formas de construir, expor e apresen! tá-los d e maneira mais eficiente em termos de uma aprendizagem significativa. (Apoio: Fundação Vitae, CNPq)

Elias, D. S.; Amaral, L. H.; de Araújo, C. F., Jr.; Matsuura, O. T.; Voelzke, M. R.

2005-08-01

52

Contributions of gamma-ray spectrometry to terrestrial impact crater studies: The example of Serra da Cangalha, northeastern Brazil  

NASA Astrophysics Data System (ADS)

Several geophysical methods have been used for decades for the identification and exploration of impact craters. Most of them are based on seismic, potential fields and electrical data, focusing on exploration of anomalies caused by changes in physical properties or by structures associated with the formation of the crater. Gamma-ray spectrometry is usually not mentioned among the geophysical methods employed in crater studies, although it is known that impact cratering processes cause a number of physical/chemical changes in the country rocks. These changes include the remobilization of hydrothermal fluids which directly modify the composition of target rocks and, subsidiarily, of soils related to these rocks. Therefore, the distribution of radioactive elements K, Th and U has the potential to map such modifications. We present the analysis of gamma-ray signatures at the Serra da Cangalha impact structure, located in northeastern Brazil, using methods for enhancing K anomalies and also the overall gamma-ray signatures. These results provide valuable information on the distinct zones within the crater and might contribute to the understanding of hydrothermal enrichment processes produced as a result of the impact event.

Vasconcelos, Marcos Alberto R.; Leite, Emilson P.; Crósta, Alvaro P.

2012-02-01

53

In vitro and in vivo anti-tumor effects of novel Span 80 vesicles containing immobilized Eucheuma serra agglutinin.  

PubMed

The lectin Eucheuma serra agglutinin (ESA) is known from previous studies to specifically bind to high-mannose type N-glycans and to induce apoptotic cancer cell death in vitro. In this study, Span 80 vesicles, with an average diameter between about 200 and 400 nm, containing immobilized ESA were prepared from the nonionic surfactant Span 80, also known as sorbitan monooleate. The vesicles were investigated in vitro and in vivo to evaluate the vesicles's potential applicability as novel drug delivery system. The results obtained are promising since the following was observed: (i) vesicular ESA had the same hemagglutinating activity as free ESA, demonstrating its biological activity when bound to the vesicles; (ii) vesicles containing immobilized ESA decreased the viability of Colo201 cancer cells in vitro while the growth of normal cells was not affected; (iii) the vesicles showed binding to Colo201 cells in vitro and caused inhibition of cancer cell growth in nude mice to which the vesicle-treated cells were added; (iv) the vesicles diminished tumor growth after intravenous administration to nude mice which contained an implanted Colo201 tumor; (v) the vesicles showed a tendency to accumulate at the site of the tumor 6h after i.v. administration to nude mice. Thus, all measurements carried out indicate that this type of Span 80 vesicle can be considered as promising alternatives to conventional phospholipid-based vesicles. PMID:20100554

Omokawa, Yousuke; Miyazaki, Tatsuhiko; Walde, Peter; Akiyama, Koichi; Sugahara, Takuya; Masuda, Seizo; Inada, Akihiro; Ohnishi, Yasuyuki; Saeki, Toshiaki; Kato, Keiichi

2010-01-25

54

Diet and feeding daily rhythm of Pimelodella lateristriga (Osteichthyes, Siluriformes) in a coastal stream from Serra do Mar - RJ.  

PubMed

The present study was carried out in Mato Grosso fluvial system, a costal drainage from Serra do Mar. We analysed the diet and the feeding daily rhythm of Pimelodella lateristriga from samples carried out during 24 hours over a 4 hour fishing interval, in June, July and September, 2006 as well as in January and February, 2007. Diet was described from the Feeding Index (IAi) and feeding daily rhythm was verified through the Gut Fullness Index (GFI). Pimelodella lateristriga diet was composed of 37 items, being aquatic insects the most important ones. IAi analysis revealed that Diptera, Trichoptera and Ephemeroptera amounted to 90% of the diet. Autochthonous invertebrates were the most important consumed items. Pimelodella lateristriga concentrated its feeding activities in the nocturnal period (10:00 PM to 2:00 AM) with marked significant differences (F = 16.11; gl = 5; p < 0.05) between each diurnal and nocturnal periods. Between 6:00 AM and 6:00 PM, foraging activity was gradually reduced. We concluded that P. lateristriga has an insectivorous diet and a nocturnal feeding habit with greater activity between 10:00 PM to 2:00 AM. PMID:21180924

Mazzoni, R; Moraes, M; Rezende, C F; Iglesias-Rios, R

2010-11-01

55

Boron-isotopic constraints on the petrogenesis of hematitic phyllite in the southern Serra do Espinhaço, Minas Gerais, Brazil  

NASA Astrophysics Data System (ADS)

Metasiliciclastic rocks predominate in the lower units of the Palaeo-Mesoproterozoic Espinhaço Supergroup, in the southern Serra do Espinhaço, Minas Gerais, Brazil. The lower units also comprise rocks with locally preserved igneous fabrics, but which have very unusual chemistries. These rocks, collectively known as hematitic phyllite, are characterised by abundant fine-grained muscovite, i.e. sericite, and variable amounts of titaniferous hematite, rutile and tourmaline. Currently, the hematitic phyllite has been interpreted as a metamorphosed palaeosol after basaltic rocks and, as such, has been used as a palaeoclimatic indicator. However, the lateritic nature of the hematitic phyllite cannot unambiguously be determined because of the K metasomatism, hematitisation and tourmalinisation recorded in the hematitic phyllite and in the arenaceous country rocks. Here we report the B-isotopic and chemical compositions of tourmaline from the hematitic phyllite. Our ?11B data are in the range between - 15‰ and 4‰. The tourmaline compositions fall along the povondraite-"oxy-dravite" join, which defines a meta-evaporitic tourmaline trend. A meta-evaporitic B source is constrained by the B-isotopic data as non-marine. Our model for the hematitic phyllite suggests that B- and K-rich brines were derived from the metamorphic dewatering of non-marine evaporites. Such brines extensively altered volcanic rocks of basaltic and rhyolitic compositions, leading to tourmaline-bearing, hematite-sericite assemblages of the hematitic phyllite.

Cabral, Alexandre Raphael; Wiedenbeck, Michael; Koglin, Nikola; Lehmann, Bernd; de Abreu, Francisco R.

2012-05-01

56

Ayuda para usar el sitio web en español del Instituto Nacional del Cáncer  

Cancer.gov

Página de guía que le permite al lector entender la forma en que está organizado el sitio web del Instituto Nacional del Cáncer (NCI), las categorías de información disponibles y las políticas que rigen este sitio web.

57

The hydrochemical facies and anomalous fluoride content in the Serra Geral aquifer system, southern Brazil: a GIS approach with tectonic and principal component analysis  

NASA Astrophysics Data System (ADS)

Groundwater with high fluoride content and water mixture patterns were studied in Serra Geral aquifer system (SGAS) using three aspects, principal component analysis (PCA), tectonic scenery and hydrochemical interpretation from 309 groundwater chemical data information from deep wells. A four-component model is suggested and explains 81% of total variance in the PCA. Six hydrochemical facies were identified. These facies suggest two different fluoride sources. Tectonic approach shows the relationship between defined hydrochemical facies and regional fracture control. The applied methodology reveals a minimum level to understand hydrochemical mixtures. The fluoride enrichment mechanisms into the groundwater are comprised in advance to guide the future uses of SGAS to the public supply.

Nanni, Arthur; Roisenberg, Ari; Marimon, Maria Paula Casagrande; Viero, Antonio Pedro

2009-09-01

58

Diversity assessment of benthic macroinvertebrates, yeasts, and microbiological indicators along a longitudinal gradient in Serra do Cipó, Brazil.  

PubMed

The main goals of this study were: 1) to evaluate the structure, diversity, and functional trophic group composition of benthic macroinvertebrate communities; 2) to characterize water quality in the headwaters of the Doce river watershed, based on physical, chemical, and biological parameters (benthic macroinvertebrates, fecal coliforms, heterotrophic bacteria, and yeasts); and 3) to contribute to the knowledge of the structure and function of longitudinal gradients in lotic ecosystems in Brazil. A total of 60 benthic macroinvertebrate taxa were identified, the dominant group being the aquatic insects, with 50 families distributed in 8 orders. The dry period presented higher values of taxonomic richness and total density of benthic macroinvertebrates. A decreasing gradient was observed in these variable values from the 3rd order stretch down to the 6th order stretch. The highest Shannon-Wiener diversity values were found in the rainy period in the 3rd order stretches, which presented well-developed riparian forest. Besides the 3rd order stretches, the Pielou evenness index values were also high in the 6th order stretch. The collectors, together with the scrapers, predominated in the benthic macroinvertebrate communities in all river stretches, except in the 2nd, 4th, and 5th order stretches in the rainy period, where communities were dominated by filterers. The shredders and predators presented low densities for all river stretches. All microbiological variables presented low levels. Due to the high counts of heterotrophic bacteria and coliforms, the studied river stretches presented inadequate potability but adequate balneability levels. The results suggest that the structure, diversity, and composition of the benthic macroinvertebrate communities are influenced by the trophic resource availability, seasonality, and sediment heterogeneity. The microbiological results of this study allow inferring that the waters from Serra do Cipó have excellent potential for recreational use and as future sources of water for human consumption. PMID:15744414

Callisto, M; Goulart, M; Medeiros, A O; Moreno, P; Rosa, C A

2005-03-02

59

The development of the Heliometer of the Observatório Nacional  

NASA Astrophysics Data System (ADS)

The Observatório Nacional at Rio de Janeiro has developed a new heliometer to perform accurate measurements of the solar diameter. The equipment makes use of split parabolic mirrors, rather than split achromatic lenses as objective. In its first campaign this reflector heliometer generated a few thousands of images of the Sun through which we evaluate the precision of the solar diameter measurements as been 5 mas. The mechanical and thermal stability of the instrument is guaranteed by the use of a telescope tube manufactured in carbon fiber. The tube firmly holds the heliometric mirrors and the CCD camera that collects the images. The perfect lodging between the two half-mirrors over its supporting plate defines the angular instrumental separation between the two images of the sun. The heliometric mirrors and supporting plate have been made in ceramic material in order to ensure the stability of the optical configuration and to maintain the two images of the solar disk displaced by a fixed angle in relation to each other. To verify the stability of the instrument we designed the procedures of collimation and comparison. The collimation consists of using the heliometer for measuring the diameter of an artificial solar image specifically created for this purpose. The comparison is performed by measuring the residual unfold of a punctual image after been unfold by two opposed heliometers. The heliometric approach allows the measurement of the solar diameter at any heliolatitude and can be undertaken as often as desired. Computer programs have been developed for automated image acquisition and analysis. The optical and mechanical design has been performed by using 3D computer aided design software.

d'Ávila, Victor; Reis, Eugênio; Penna, Jucira; Oliveira, Luiz Carlos; Coletti, Alissandro; Matias, Victor; Andrei, Alexandre; Boscardin, Sergio

2010-02-01

60

The cytotoxic effect of Eucheuma serra agglutinin (ESA) on cancer cells and its application to molecular probe for drug delivery system using lipid vesicles.  

PubMed

Eucheuma serra agglutinin (ESA) derived from a marine red alga, Eucheuma serra, is a lectin that specifically binds to mannose-rich carbohydrate chains. ESA is a monomeric molecule, with a molecular weight of29,000. ESA induced cell death against several cancer cell lines, such as colon cancer Colo201 cells and cervix cancer HeLa cells. DNA ladder detection and the induction of caspase-3 activity suggested that the cell death induced by ESA against cancer cells was apoptosis. ESA bound to the cell surface of Colo201 cells in the sugar chain dependent manner. This means that the binding of ESA to the cell surface is specific for mannose-rich sugar chains recognized by ESA. The binding of ESA to the cell surface of Colo201 cells was slightly suppressed by the high concentrations of serum because of the competition with serum components possessing the mannose-rich sugar chain motifs. On the other hand, a lipid vesicle is a very useful microcapsule constructed by multilamellar structure,and adopted as drug or gene carrier. ESA was immobilized on the surface of the lipid vesicles to apply the lipid vesicles to cancer specific drug delivery system. ESA-immobilized lipid vesicles were effectively bound to cancer cell lines compared with plane vesicles. PMID:19003319

Sugahara, T; Ohama, Y; Fukuda, A; Hayashi, M; Kawakubo, A; Kato, K

2001-07-01

61

Thermal inactivation kinetics of Rabdosia serra (Maxim.) Hara leaf peroxidase and polyphenol oxidase and comparative evaluation of drying methods on leaf phenolic profile and bioactivities.  

PubMed

Inactivation kinetics of peroxidase and polyphenol oxidase in fresh Rabdosia serra leaf were determined by hot water and steam blanching. Activation energy (52.30 kJ mol(-1)) of polyphenol oxidase inactivation was higher than that (20.15 kJ mol(-1)) of peroxidase. Water blanching at 90 °C or steam blanching at 100 °C for 90 s was recommended as the preliminary treatment for the retention of phenolics. Moreover, comparative evaluation of drying methods on the phenolics profiles and bioactivities of R. serra leaf were conducted. The results indicated that only intact leaf after freeze drying retained the initial quality. The sun- and air-dried leaves possessed identical phenolic profiles. The homogenised leaf (after freeze-drying) possessed a lower level of phenolics due to enzymatic degradation. Good antioxidant activities were detected for the sun- and air-dried leaves. There was insignificant difference in anti-tyrosinase and anti-?-glucosidase activities among sun-, air-, and freeze-dried leaves. PMID:23442652

Lin, Lianzhu; Lei, Fenfen; Sun, Da-Wen; Dong, Yi; Yang, Bao; Zhao, Mouming

2012-04-11

62

Antibacterial activity-guided purification and identification of a novel C-20 oxygenated ent-kaurane from Rabdosia serra (MAXIM.) HARA.  

PubMed

The objective of this work was to conduct an activity-guided isolation of antibacterial compounds from Rabdosia serra. The ethanol extracts of R. serra leaf and stem were partitioned sequentially into petroleum ether, ethyl acetate, butanol and water fractions, respectively. The ethanol extract of leaf evidenced broad-spectrum antibacterial activity against gram-positive bacterial, including Bacillus subtilis, Bacillus cereus, Staphylococcus aureus, and Listeria monocytogenes. The ethyl acetate fractions of leaf and stem exhibited strong inhibition against gram-positive bacteria, and were then purified further. On the basis of antibacterial assay-guided purification, three phenolic compounds (rosmarinic acid, methyl rosmarinate and pedalitin) and four C-20 oxygenated ent-kauranes (effusanin E, lasiodin, rabdosichuanin D and a new compound namely effusanin F) were obtained, whose contents were determined by HPLC analysis. The broth microdilution method confirmed the important inhibition potential of C-20 oxygenated ent-kauranes with low minimum inhibitory concentration (MIC) values. Effusanin E, lasiodin and effusanin F could be useful for the development of new antibacterial agents. PMID:23561188

Lin, Lianzhu; Zhu, Dashuai; Zou, Linwu; Yang, Bao; Zhao, Mouming

2013-01-12

63

Uranium and thorium series disequilibrium in quaternary carbonate deposits from the Serra da Bodoquena and Pantanal do Miranda, Mato Grosso do Sul State, central Brazil.  

PubMed

Activities of gamma-ray emitting members of the uranium (238U) and thorium (232Th) series were measured in a quaternary limestone deposit that outcrops in the southeastern Pantanal Matogrossense Basin and in quaternary tufas deposited at the drainage of the Serra da Bodoquena. It is a first step in a study of the mobilization of uranium and thorium series and its relation to surface hydrology, in a region where carbonate deposits are being continuously dissolved and reprecipitated. The obtained results show that all these deposits are characterized by very low concentrations of uranium and thorium. The 238U/226Ra and 228Th/228Ra activity ratios are significantly different than 1.0, indicating that both series are in radioactive disequilibrium. Although the Serra da Bodoquena deposits seem to be very recent, their very fine granulation and high porosity suggest that they behave as open systems for geochemical exchanges of uranium and thorium series members. The Pantanal do Miranda limestone has a radiocarbon age of 3900 yr BP. Since the thorium series is in disequilibrium it is also concluded that this deposit behaves as an open system for geochemical exchanges. PMID:11144246

Ribeiro, F B; Roque, A; Boggiani, P C; Flexor, J M

2001-01-01

64

Impact of natural climate change and historical land use on vegetation cover and geomorphological process dynamics in the Serra dos Órgãos mountain range in Rio de Janeiro State, Brazil  

Microsoft Academic Search

The Serra dos Órgãos mountain range in the hinterland of Rio de Janeiro contains extensive remnants of the Atlantic Forest (Mata Atlântica) biome, which once covered about 1.5 million km² from Northeast to South Brazil and further inland to Paraguay and Argentina. As a result of historical deforestation and recent land use intensification processes today only 5 to 8% of

U. Nehren; D. Sattler; J. Heinrich

2010-01-01

65

Instituto Nacional de Electrification, Guatemala Load Dispatch Center and Global Communications Center. Feasibility report (Instituto Nacional de Electrificacion, Guatemala Centro Nacional de Despacho de Carga y Sistema Global de Comunicaciones). Export trade information  

SciTech Connect

The report presents the results of a feasibility study for the National Load Dispatch Center and Global Communications System Project in Guatemala. The project consists of a communication system which will provide Institute Nacional de Electrificacion (INDE) operations personnel direct voice access to all major power system facilities. In addition, a modern computer based load dispatch center has been configured on a secure and reliable basis to provide automatic generation control of all major interconnected generating plants within Guatemala.

Not Available

1985-07-01

66

Stratigraphy of fluvial sediment sequences and their palaeoenvironmental information in the foreland of the Serra dos Órgãos, southeastern Brazil  

NASA Astrophysics Data System (ADS)

In the hinterland of Rio de Janeiro city the rivers Guapiaçu, Macacu and Iconha originate in the Serra dos Órgãos mountain range and drain into the Atlantic Ocean. Since their channelization in the 1950s, higher flow velocities caused an incision of the rivers into the valley fills. These circumstances provide the possibility to study the alluvial deposits along the streams during low water level and allow conclusions on palaeoenvironmental change and landscape history. Sedimentological investigations of 13 exposures as well as AMS 14C measurements were carried out to investigate sediment properties and reconstruct the sedimentation history within the floodplains. These results enable to distinguish three different facies units. A late Pleistocene Unit I can be detected at the base of the observed exposures and consists of clast-supported fine to coarse gravels. It can be assumed that the gravel bodies were formed by a climatically induced erosional-depositional cycle within a braided river system. The gravels are overlaid by Unit II, a grayish to bluish loam mainly of mid-Holocene age. During generally drier climates these loams have been deposited during high water stages or flooding events as a splay facies proximal to the rivers. A reduced flow competence and relatively stable morphodynamic conditions are assumed for that period. Unit III accumulated in the late Holocene typically consists of several meters of planar or cross bedded sands to fine gravels, interfingered by loamy inclusions, buried peat bogs and organic debris. Fining-upward sequences can be frequently studied within Unit III which were completed by loamy sediments in the uppermost parts of the exposures. The increased flow competence from Unit II to Unit III seems to be a fluvial response to the increased humidity of the late Holocene as well as the enhancement of El Niño-Southern Oscillation (ENSO). Heavy rainfall likely caused higher sediment supply from the steep slopes as well as a reworking of sediments followed by sedimentation in the floodplains. The development of the uppermost loams is attributed to deforestation and land use intensification in historical times which led to higher erosion rates and related sediment loads. An increased human impact can be postulated for the last 250 years.

Kirchner, André; Nehren, Udo; Heinrich, Jürgen

2013-04-01

67

Short-range ensemble predictions based on convection perturbations in the Eta Model for the Serra do Mar region in Brazil  

NASA Astrophysics Data System (ADS)

The Southeast Brazil, in the coastal and mountain region called Serra do Mar, between Sao Paulo and Rio de Janeiro, is subject to frequent events of landslides and floods. The Eta Model has been producing good quality forecasts over South America at about 40-km horizontal resolution. For that type of hazards, however, more detailed and probabilistic information on the risks should be provided with the forecasts. Thus, a short-range ensemble prediction system (SREPS) based on the Eta Model is being constructed. Ensemble members derived from perturbed initial and lateral boundary conditions did not provide enough spread for the forecasts. Members with model physics perturbation are being included and tested. The objective of this work is to construct more members for the Eta SREPS by adding physics perturbed members. The Eta Model is configured at 10-km resolution and 38 layers in the vertical. The domain covered is most of Southeast Brazil, centered over the Serra do Mar region. The constructed members comprise variations of the cumulus parameterization Betts-Miller-Janjic (BMJ) and Kain-Fritsch (KF) schemes. Three members were constructed from the BMJ scheme by varying the deficit of saturation pressure profile over land and sea, and 2 members of the KF scheme were included using the standard KF and a momentum flux added to KF scheme version. One of the runs with BMJ scheme is the control run as it was used for the initial condition perturbation SREPS. The forecasts were tested for 6 cases of South America Convergence Zone (SACZ) events. The SACZ is a common summer season feature of Southern Hemisphere that causes persistent rain for a few days over the Southeast Brazil and it frequently organizes over Serra do Mar region. These events are particularly interesting because of the persistent rains that can accumulate large amounts and cause generalized landslides and death. With respect to precipitation, the KF scheme versions have shown to be able to reach the larger precipitation peaks of the events. On the other hand, for predicted 850-hPa temperature, the KF scheme versions produce positive bias and BMJ versions produce negative bias. Therefore, the ensemble mean forecast of 850-hPa temperature of this SREPS exhibits smaller error than the control member. Specific humidity shows smaller bias in the KF scheme. In general, the ensemble mean produced forecasts closer to the observations than the control run.

Bustamante, J. F. F.; Chou, S. C.; Gomes, J. L.

2009-04-01

68

Species composition and structure of Thysanoptera communities in different microhabitats at the Parque Estadual de Itapuã, Viamão, RS.  

PubMed

Although thrips are known as inhabitants of flowers, they are also abundant and diverse in other microhabitats. There is an information gap concerning them, especially related to the native fauna in southern Brazil. The structure and composition of the thysanopteran community in different microhabitats was studied at the "Parque Estadual de Itapuã" (30 degrees 22' S 51 degrees 02' W), RS, southern Brazil. Between June 1999 and May 2001, branches (n = 1,274), flowers (n = 774), grass tussocks (n = 596) and leaf litter (n = 603) were sampled systematically in 20 points of four trails (T1 - Pedreira beach, T2 - Araçá beach, T3 - Lagoinha, and T4 - Grota hill). We found 2,197 adult thrips determined in 73 species in 41 genera, of which 37 could be nominated. Four families are represented, Thripidae, Phlaeothripidae, Heterothripidae and Merothripidae, with the first the most abundant (N = 1,599) and with the highest species richness (S = 32). The highest thrips abundance occurred in flowers N = 1,224 and the highest number of exclusive species occurred in the leaf litter (27). Frankliniella rodeos Moulton, 1933, Frankliniella gemina Bagnall, 1919 and Smicrothrips particula Hood, 1952 comprise 49.4% of the total sampled. Regarding T2, we obtained the highest abundance (N = 935) and highest species richness (S = 43). The composition of the faunas in each kind of environment proved very particular. PMID:17119824

Pinent, S M J; Romanowski, H P; Redaelli, L R; Cavalleri, A

2006-08-01

69

El Instituto Nacional del Cáncer publica nuevo atlas de mortalidad por cáncer  

Cancer.gov

El Instituto Nacional del Cáncer (NCI, por sus siglas en inglés) ha publicado un nuevo atlas, el Atlas de Mortalidad por Cáncer en los Estados Unidos, 1950-94, que muestra los patrones geográficos de las tasas de mortalidad por cáncer durante más de cuatro décadas, en más de 3.000 condados a lo largo del país.

70

Enlightenment, Education, and the Republican Project: Chile's "Instituto Nacional" (1810-1830)  

ERIC Educational Resources Information Center

This article analyses the establishment of the "Instituto Nacional de Chile" between 1810 and 1830 as a crucial element of a political and cultural project advanced from an enlightened and republican elite. Its early inception in 1813 resulted from the necessity of consolidating a republican order, as shown by the different projects between 1810…

Baeza Ruz, Andres

2010-01-01

71

Declaración del Instituto Nacional del Cáncer sobre los exámenes selectivos de detección de cáncer de seno  

Cancer.gov

El Instituto Nacional del Cáncer (NCI) agradece la cuidadosa revisión y análisis que ha hecho la Brigada de Servicios Preventivos de los Estados Unidos de la evidencia con respecto a los exámenes de detección de cáncer de seno para mujeres que tienen un riesgo del promedio.Preguntas y Repuestas

72

The Universidad Nacional Abierta of Venezuela. A Case Study in Distance Learning Systems.  

ERIC Educational Resources Information Center

|A brief description of the country of Venezuela (geography, population, economy, internal communications, and politics) and its educational system introduce a description of the Universidad Nacional Abierta (UNA). The UNA was opened in July 1978 to expand the national system of higher education by the use of distance learning techniques. These…

Friedman, H. Z.

73

Medical social work in the ‘Centro Nacional de Paraplejicos’, Toledo, spain  

Microsoft Academic Search

The Medical Social Service in the ‘Centro Nacional de Rehabilitatión de Parapléjicos’ of Toledo is briefly explained. Until 30 April 1975, 141 patients were treated in this hospital and the pertinent statistics are shown. The main social problems were housing, pension and job. The Medical Social Service makes use of all its resources to solve these problems.

J Mendoza-Sarmiento; P Diago; M L Enriquez; M L Huertas; M L Ochoa; A Urtiaga

1976-01-01

74

Principales resultados del Estudio Nacional de Exámenes de pulmón (NLST): Síntesis  

Cancer.gov

El 4 de noviembre de 2010, el Estudio Nacional de Exámenes de Pulmón dio a conocer resultados iniciales que indican que hubo 20% menos muertes por cáncer de pulmón entre los participantes del estudio evaluados con tomografía computarizada espiral de baja dosis (también conocida como tomografía computarizada helicoidal) que en los participantes que fueron evaluados con radiografías de pecho.

75

Muerte fetal en el Hospital Nacional Arzobispo Loayza durante el periodo agosto 2003- noviembre 2004  

Microsoft Academic Search

SUMMARY Objectives: To elucidate the etiology of fetal death, and to identify its sociodemographic, clinical and pathologics characteristics, and its rate. Material and methods: A descriptive study was conducted. Cases of fetal death were review on Register Book of the obstetrician service of Hospital Nacional Arzobispo Loayza between August 2003 to November 2004. The clinical and pathology reports were described.

MILLA VERA; Luis Miguel; SALHUANA Manuel; ROJAS JAIMES

76

Aerobic bacterial microflora of Broad-snouted caiman (Caiman latirostris) oral cavity and cloaca, originating from parque Zool?gico Arruda C?mara, Para?ba, Brazil  

PubMed Central

The objective of this study was to isolate and identify the aerobic bacterial microflora from the oral cavity mucosa and cloaca’s samples, collected from Broad-snouted caiman (Caiman latirostris), born and bred in captivity at Parque Zoológico Arruda Câmara, João Pessoa, Paraíba, Brazil. The most common bacteria were Staphylococcus sp. (14.74%), Corynebacterium sp. (13.68%), Escherichia coli (13.68%) and Shigella sp.(11.58%), and the less common were Citrobacter sp. (1.05%), Klebsiella pneumoniae (1.05%) and Salmonella sp. (1.05%).This emphasizes the importance of these microorganisms’ participation in infectious processes (sepsis) and injuries caused by crocodilians.

Silva, J.S.A.; Mota, R.A.; Pinheiro Junior, J.W.; Almeida, M.C.S.; Silva, D.R.; Ferreira, D.R.A.; Azevedo, J.C.N.

2009-01-01

77

Gamma Radiation Dose Rate in Air due to Terrestrial Radionuclides in Southern Brazil: Synthesis by Geological Units and Lithotypes Covered by the Serra do Mar Sul Aero-Geophysical Project  

Microsoft Academic Search

The absorbed dose rates in air due to terrestrial radionuclides were estimated from aerial gamma spectrometric data for an area of 48,600 km2 in Southern Brazil. The source data was the Serra do Mar Sul Aero-Geophysical Project back-calibrated in a cooperative work among the Geological Survey of Brazil, the Geological Survey of Canada, and Paterson, Grant & Watson Ltd. The

Rodrigo O. Bastos; Carlos R. Appoloni; Jose´ P. P. Pinese

2008-01-01

78

Los cambios comportamentales y del uso del espacio asociados a la muerte del macho dominante de una manada de lobos ibéricos (canis lupus signatus) en el Parque Zoológico de Barcelona  

Microsoft Academic Search

La dinámica social es uno de los campos más estudiados de la familia Canidae en condiciones de cautividad. En este estudio se pretende determinar cómo la muerte del macho dominante de una manada de lobos alojados en el Parque Zoológico de Barcelona afecta al patrón de actividad diario y al uso del espacio del resto de coespecíficos. Los individuos objeto

Ana Isabel Soriano Giménez; Susana Serrat Navarro; Conrad Ensenyat; Carles Riba; Carmen Maté García

2006-01-01

79

Speckle Interferometry and Speckle Photometry of Binary Stars at Telescopes of Observatorio Astronomico Nacional  

NASA Astrophysics Data System (ADS)

The Observatorio Astronomico Nacional (OAN) is a facility of the Instituto de Astronomía of the Universidad Nacional Autónoma de México (IA-UNAM). There are two astronomical sites where the four telescopes are mounted: one site is located at San Pedro Mártir (OAN-SPM), Baja California, and the second one at Tonantzintla (OAN-T), near Puebla, Mexico. These telescopes can be effectively used for speckle interferometric and for speckle photometric measurements of binary and multiple stars with the Rayleigh resolution limit R = 1.22 ?/D. Regular speckle interferometric measurements of binary stars have been made with telescopes of the OAN since 2008. In 2011 we start speckle photometric measurements in three colors (V,R,I). In 2012 two more spectral bands (U,B) were added.

Orlov, V.

80

Control del cáncer y salud mundial: noticia del Instituto Nacional del Cáncer (NCI)  

Cancer.gov

En combinación con una reunión de alto nivel de las Naciones Unidas sobre enfermedades no transmisibles en países en vías de desarrollo, el doctor Harold Varmus, director del NCI, y el doctor Ted L. Trimble, del NCI, han publicado un comentario en Science Translational Medicine sobre “La integración del control del cáncer en la salud mundial" (Integrating Cancer Control into Global Health).

81

Establishment of embryogenic cultures and plant regeneration in the Portuguese cultivar ‘Touriga Nacional’ of Vitis vinifera L  

Microsoft Academic Search

‘Touriga Nacional’ is the most important Portuguese grapevine cultivar used for Port wine, table wine and varietal wine production.\\u000a In order to obtain a reproducible plant regeneration system that allows the application of biotechnological tools to grapevine\\u000a breeding, embryogenic cultures were induced from immature flowers of three Touriga Nacional selected clones. Gynoecia and\\u000a anthers were cultured on Nitsch and Nitsch

A. L. Pinto-Sintra

2007-01-01

82

Active Targeting to Osteosarcoma Cells and Apoptotic Cell Death Induction by the Novel Lectin Eucheuma serra Agglutinin Isolated from a Marine Red Alga.  

PubMed

Previously, we demonstrated that the novel lectin Eucheuma serra agglutinin from a marine red alga (ESA) induces apoptotic cell death in carcinoma. We now find that ESA induces apoptosis also in the case of sarcoma cells. First, propidium iodide assays with OST cells and LM8 cells showed a decrease in cell viability after addition of ESA. With 50??g/ml ESA, the viabilities after 24 hours decreased to 54.7 ± 11.4% in the case of OST cells and to 41.7 ± 12.3% for LM8 cells. Second, using fluorescently labeled ESA and flow cytometric and fluorescence microscopic measurements, it could be shown that ESA does not bind to cells that were treated with glycosidases, indicating importance of the carbohydrate chains on the surface of the cells for efficient ESA-cell interactions. Third, Span 80 vesicles with surface-bound ESA as active targeting ligand were shown to display sarcoma cell binding activity, leading to apoptosis and complete OST cell death after 48 hours at 2??g/ml ESA. The findings indicate that Span 80 vesicles with surface-bound ESA are a potentially useful drug delivery system not only for the treatment of carcinoma but also for the treatment of osteosarcoma. PMID:23346404

Hayashi, Keita; Walde, Peter; Miyazaki, Tatsuhiko; Sakayama, Kenshi; Nakamura, Atsushi; Kameda, Kenji; Masuda, Seizo; Umakoshi, Hiroshi; Kato, Keiichi

2012-12-27

83

Analysis of the Evolution of Astronomical Concepts Presented by Teachers of Some Schools (Mauá, Ribeirão Pires and Rio Grande da Serra)  

NASA Astrophysics Data System (ADS)

The reason for the development of this work is based on knowing many Basic Education's teachers (EB) don't deal concepts related to astronomy and when they do, followed didactic books which contain many conceptual errors, it also know that astronomy is one of the contents that it being taught in the EB and do part of what is proposed by the Education Ministry and Education Department São Paulo State and also, that several researchers point out many mistakes in the teaching of Astronomy. It's purpose of minimizing some deficiencies, which was drawed an University Extension Course for Teachers of Diretoria de Ensino Regional (Mauá, Ribeirão Pires and Rio Grande da Serra) with the following objectives: to raise alternative conceptions; to subsidize teachers by means of lectures, discussions and workshops, and to check the learning after the course. Therefore, sixteen questions were applied before and after the course, so it was established that 100% of the teachers knew the names of the phases of the moon, 97.0% understood that the Solar System is composed by eight planets, 78.1% explained as occured "Lunar Eclipse", "Solar Eclipse" and "Solstice", 72.7% knew to explain the occurrence of the seasons of the year; 64.5% explained the occurrence of the equinox correctly, 89.7% were able to define properly "comet"; 63.6% defined "Asteroid", 54.5% defined "meteor"; 58.1% defined "galaxy", and 42.4% defined "planet".

Gonzaga, E. P.

2009-12-01

84

Active Targeting to Osteosarcoma Cells and Apoptotic Cell Death Induction by the Novel Lectin Eucheuma serra Agglutinin Isolated from a Marine Red Alga  

PubMed Central

Previously, we demonstrated that the novel lectin Eucheuma serra agglutinin from a marine red alga (ESA) induces apoptotic cell death in carcinoma. We now find that ESA induces apoptosis also in the case of sarcoma cells. First, propidium iodide assays with OST cells and LM8 cells showed a decrease in cell viability after addition of ESA. With 50??g/ml ESA, the viabilities after 24 hours decreased to 54.7 ± 11.4% in the case of OST cells and to 41.7 ± 12.3% for LM8 cells. Second, using fluorescently labeled ESA and flow cytometric and fluorescence microscopic measurements, it could be shown that ESA does not bind to cells that were treated with glycosidases, indicating importance of the carbohydrate chains on the surface of the cells for efficient ESA-cell interactions. Third, Span 80 vesicles with surface-bound ESA as active targeting ligand were shown to display sarcoma cell binding activity, leading to apoptosis and complete OST cell death after 48 hours at 2??g/ml ESA. The findings indicate that Span 80 vesicles with surface-bound ESA are a potentially useful drug delivery system not only for the treatment of carcinoma but also for the treatment of osteosarcoma.

Hayashi, Keita; Walde, Peter; Miyazaki, Tatsuhiko; Sakayama, Kenshi; Nakamura, Atsushi; Kameda, Kenji; Masuda, Seizo; Umakoshi, Hiroshi; Kato, Keiichi

2012-01-01

85

The Double-Astrograph Telescope is working at the Observatorio Astronómico Nacional of Venezuela  

NASA Astrophysics Data System (ADS)

The Double Astrograph telescope (two 0.5 m lenses) in the Observatorio Astronómico Nacional of Venezuela (OAN) will soon be available for observations to the astronomical comunity. Despite of being placed at the OAN since thirty years ago, together with the three other telescopes installed there, it was not fully assembled. Recent engineering work on it, has got to mecanically balance the telescope and set control of the electric motors for the motion of this instrument. The current positioning and guided motions of the telescope allow for an observational quantification of the different aberrations of the optical system of the instrument. With this in mind, selected fields of stars have been observed with a CCD camera, that was installed at different locations on the focal plane. Here we show a summary of the technical operations and the first observational results, aimed at evaluating the potential of the Double Astrograph for future scientific investigations.

Abad, C.; Barroeta, G.; Schenner, H.; Plaza, L.; Ramírez, P.; Lacruz, E.

2009-05-01

86

Ambient Dose Equivalent measured at the Instituto Nacional de Cancerologia Department of Nuclear Medicine  

SciTech Connect

Ambient dose equivalent values were determined in several sites at the Instituto Nacional de Cancerologia, Departmento de Medicina Nuclear, using TLD-100 and TLD-900 thermoluminescent dosemeters. Additionally, ambient dose equivalent was measured at a corridor outside the hospitalization room for patients treated with {sup 137}Cs brachytherapy. Dosemeter calibration was performed at the Instituto Nacional de Investigaciones Nucleares, Laboratorio de Metrologia, to known {sup 137}Cs gamma radiation air kerma. Radionuclides considered for this study are {sup 131}I, {sup 18}F, {sup 67}Ga, {sup 99m}Tc, {sup 111}In, {sup 201}Tl and {sup 137}Cs, with main gamma energies between 93 and 662 keV. Dosemeters were placed during a five month period in the nuclear medicine rooms (containing gamma-cameras), injection corridor, patient waiting areas, PET/CT study room, hot lab, waste storage room and corridors next to the hospitalization rooms for patients treated with {sup 131}I and {sup 137}Cs. High dose values were found at the waste storage room, outside corridor of {sup 137}Cs brachytherapy patients and PET/CT area. Ambient dose equivalent rate obtained for the {sup 137}Cs brachytherapy corridor is equal to (18.51{+-}0.02)x10{sup -3} mSv/h. Sites with minimum doses are the gamma camera rooms, having ambient dose equivalent rates equal to (0.05{+-}0.03)x10{sup -3} mSv/h. Recommendations have been given to the Department authorities so that further actions are taken to reduce doses at high dose sites in order to comply with the ALARA principle (as low as reasonably achievable).

Avila, O. [Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, DF (Mexico); Torres-Ulloa, C. L. [Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, DF (Mexico); Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, AP 70-542, 04510, DF (Mexico); Medina, L. A. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, AP 20-364, 01000, DF (Mexico); Unidad de Investigacion Biomedica en Cancer INCan-UNAM, Av. San Fernando 22 C.P. 14080 (Mexico); Trujillo-Zamudio, F. E. [Instituto Nacional de Cancerologia (INCan), Av. San Fernando 22, C.P. 14080 (Mexico); Gamboa de Buen, I. [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, AP 70-543, 04510 DF (Mexico); Buenfil, A. E.; Brandan, M. E. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, AP 20-364, 01000, DF (Mexico)

2010-12-07

87

Ambient Dose Equivalent measured at the Instituto Nacional de Cancerología Department of Nuclear Medicine  

NASA Astrophysics Data System (ADS)

Ambient dose equivalent values were determined in several sites at the Instituto Nacional de Cancerología, Departmento de Medicina Nuclear, using TLD-100 and TLD-900 thermoluminescent dosemeters. Additionally, ambient dose equivalent was measured at a corridor outside the hospitalization room for patients treated with 137Cs brachytherapy. Dosemeter calibration was performed at the Instituto Nacional de Investigaciones Nucleares, Laboratorio de Metrología, to known 137Cs gamma radiation air kerma. Radionuclides considered for this study are 131I, 18F, 67Ga, 99mTc, 111In, 201Tl and 137Cs, with main gamma energies between 93 and 662 keV. Dosemeters were placed during a five month period in the nuclear medicine rooms (containing gamma-cameras), injection corridor, patient waiting areas, PET/CT study room, hot lab, waste storage room and corridors next to the hospitalization rooms for patients treated with 131I and 137Cs. High dose values were found at the waste storage room, outside corridor of 137Cs brachytherapy patients and PET/CT area. Ambient dose equivalent rate obtained for the 137Cs brachytherapy corridor is equal to (18.51+/-0.02)×10-3 mSv/h. Sites with minimum doses are the gamma camera rooms, having ambient dose equivalent rates equal to (0.05+/-0.03)×10-3 mSv/h. Recommendations have been given to the Department authorities so that further actions are taken to reduce doses at high dose sites in order to comply with the ALARA principle (as low as reasonably achievable).

Ávila, O.; Torres-Ulloa, C. L.; Medina, L. A.; Trujillo-Zamudio, F. E.; de Buen, I. Gamboa; Buenfil, A. E.; Brandan, M. E.

2010-12-01

88

Spatio-temporal analysis of the urban-rural gradient structure: an application in a Mediterranean mountainous landscape (Serra San Bruno, Italy)  

NASA Astrophysics Data System (ADS)

The most recent and significant transformations of European landscapes have occurred as a consequence of a series of diffused, varied and often connected phenomena: urban growth and sprawl, agricultural intensification in the most suitable areas and agricultural abandonment in marginal areas. These phenomena can affect dramatically ecosystems' structure and functioning, since certain modifications cause landscape fragmentation while others tend to increase homogeneity. Thus, a thorough comprehension of the evolution trends of landscapes, in particular those linked to urban-rural relations, is crucial for a sustainable landscape planning. In this framework, the main objectives of the present paper are: (a) to investigate Land Use/Land Cover (LULC) transformations and dynamics that occurred over the period 1955-2006 in the municipality of Serra San Bruno (Calabria, Italy), an area particularly representative of the Mediterranean mountainous landscape; (b) to compare the settlement growth with the urban planning tools in charge in the study area; (c) to examine the relationship between urban-rural gradient, landscape metrics, demographic and physical variables; (d) to investigate the evolution of urban-rural gradient composition and configuration along significant axes of landscape changes. Data with a high level of detail (minimum mapping unit 0.2 ha) were obtained through the digitisation of historical aerial photographs and digital orthophotos identifying LULC classes according to the Corine Land Cover legend. The investigated period was divided into four significant time intervals, which were specifically analysed to detect LULC changes. Differently from previous studies, in the present research the spatio-temporal analysis of urban-rural gradient was performed through three subsequent steps: (1) kernel density analysis of settlements; (2) analysis of landscape structure by means of metrics calculated using a moving window method; (3) analysis of composition and configuration of the urban-rural gradient within three landscape profiles located along significant axes of LULC change. The use of thematic overlays and transition matrices enabled a precise identification of the LULC changes that had taken place over the examined period. As a result, a detailed description and mapping of the landscape dynamics were obtained. Furthermore, landscape profiling technique, using continuous data, allowed an innovative and valuable approach for analysing and interpreting urban-rural gradient structure over space and time.

Modica, G.; Vizzari, M.; Pollino, M.; Fichera, C. R.; Zoccali, P.; Di Fazio, S.

2012-12-01

89

Spatio-temporal analysis of the urban-rural gradient structure: an application in a Mediterranean mountainous landscape (Serra San Bruno, Italy)  

NASA Astrophysics Data System (ADS)

The most recent and significant transformations of European landscapes have occurred as a consequence of a series of diffused, varied and often connected phenomena: urban growth and sprawl, agricultural intensification in the most suitable areas and agricultural abandonment in marginal areas. These phenomena can affect dramatically ecosystems' structure and functioning, since certain modifications cause landscape fragmentation while others tend to increase homogeneity. Thus, a thorough comprehension of the evolution trends of landscapes, in particular those linked to urban-rural relations, is crucial for a sustainable landscape planning. In this framework, the main objectives of the present paper are: (a) to investigate Land Use/Land Cover (LULC) transformations and dynamics occurred over the period 1955-2006 in the municipality of Serra San Bruno (Calabria, Italy), an area particularly representative of the Mediterranean mountainous landscape; (b) to compare the settlement growth with the urban planning tools in charge in the study area; (c) to examine the relationship between urban-rural gradient, landscape metrics, demographic and physical variables; (d) to investigate the evolution of urban-rural gradient composition and configuration along significant axes of landscape changes. Data with a high level of detail (minimum mapping unit 0.2 ha) were obtained through the digitisation of historical aerial photographs and digital orthophotos identifying LULC classes according to the Corine Land Cover legend. The investigated period was divided into four significant time intervals, which were specifically analysed to detect LULC changes. Differently from previous studies, in the present research the spatio-temporal analysis of urban-rural gradient was performed through three subsequent steps: (1) kernel density analysis of settlements; (2) analysis of landscape structure by means of metrics calculated using a moving window method; (3) analysis of composition and configuration of the urban-rural gradient within three landscape profiles located along significant axes of LULC change. The use of thematic overlays and transition matrices enabled a precise identification of the LULC changes that had taken place over the examined period. As a result, a detailed description and mapping of the landscape dynamics were obtained. Furthermore, landscape profiling technique, using continuous data, allowed an innovative and valuable approach for analysing and interpreting urban-rural gradient structure over space and time.

Modica, G.; Vizzari, M.; Pollino, M.; Fichera, C. R.; Zoccali, P.; Di Fazio, S.

2012-08-01

90

Geology, geochemistry, and U Pb geochronology of the Archean (2.74 Ga) Serra do Rabo granite stocks, Carajás Metallogenetic Province, northern Brazil  

NASA Astrophysics Data System (ADS)

The Carajás region, located in the southeastern part of the Amazon Craton, has been considered one of the most important mineral provinces in the world. The Serra do Rabo Granite (SRG) crops out near the eastern termination of the Carajás fault as two granite stocks, elongated approximately in an E W direction, concordant with the regional structures. Leucomicrocline granite, hornblende microcline granite, biotite hornblende microcline granite, hornblende syenogranite, and subordinate aplite are identified. The granites are grayish pink and coarse to medium grained and have mainly hypidiomorphic granular texture. Granophyric textures are common. The accessory minerals are ilmenite, apatite, zircon, allanite, and rare pyroxene. The SRG rocks are either massive or foliated, with a slightly anastomosed continuous S1 foliation (E W/subvertical) outlined by the preferred orientation of quartz, feldspars, and mafic minerals. Locally, decimeter- to meter-wide mylonite/ultramylonite bands (S1m) occur along the E W foliation. The S1 foliation was developed under higher temperatures than those of the S1m mylonite foliation. The SRG structural evolution was controlled by progressive deformation under decreasing temperature, indicative of syntectonic emplacement. The SRG also has relatively high SiO2, K2O, and Na2O contents; high FeO*/(FeO*+MgO) ratios; high Zr, Ba, Nb, and Ga; and very high rare-earth element contents. The chemical signature is moderately alkaline and metaluminous, comparable to that of the A-type, A2, and ALK-3 granites. The origin of the SRG magmas may be related to the partial melting of crustal sources, such as previously metamorphosed calc-alkaline granites. The SRG crosscuts supracrustal rocks, promoting low-pressure/high-temperature metamorphism. The interaction between regional compressive stresses and the ballooning effect of the granite stocks promoted slight aureole flattening and rheological changes in the supracrustal rocks. The U Pb zircon age of 2743±1.6 Ma is interpreted as the age of zircon crystallization, granite stock emplacement, and regional horizontal shortening. Other 2.7 Ga syntectonic alkaline granites (e.g. Estrela, Plaquê, Planalto) have been reported in the region.

Sardinha, Alex Souza; Barros, Carlos Eduardo De Mesquita; Krymsky, Robert

2006-03-01

91

Accelerator-based research activities at “Centro Nacional de Aceleradores”, Seville (Spain)  

NASA Astrophysics Data System (ADS)

In February 1998, almost 10 years ago, the set-up of the first IBA (ion beam analysis) facility in Spain took place with the arrival of a 3 MV tandem accelerator [J. García-López, F.J. Ager, M. Barbadillo-Rank, F.J. Madrigal, M.A. Ontalba, M.A. Respaldiza, M.D. Ynsa, Nucl. Instr. and Meth. B 161 163 (2000) 1137]. Since then, an intensive research program using IBA techniques has been carried out. Subsequently, a cyclotron for 18 MeV protons has been also installed at the “Centro Nacional de Aceleradores” (CNA), devoted mainly to isotope production for PET (positron emission tomography) techniques, but possibly applied to material analysis and damage studies on a dedicated beam line. Moreover, a 1 MV tandem has been recently installed for AMS (accelerator mass spectrometry) 14C dating and environmental research with other isotopes. In the present paper we describe the new facilities and the developments of the 3 MV tandem beam lines occurred during the past years, as well as some examples of the most recent research activities in our Center in the fields of Material Science, Archaeometry, Biomedicine and Environment.

Respaldiza, M. A.; Ager, F. J.; Carmona, A.; Ferrer, J.; García-León, M.; García-López, J.; García-Orellana, I.; Gómez-Tubío, B.; Morilla, Y.; Ontalba, M. A.; Ortega-Feliu, I.

2008-05-01

92

A atuação do Observatório Nacional registrada nos relatórios ministeriais 1889 a 1930  

NASA Astrophysics Data System (ADS)

O período republicano até 1930 foi marcante na história do Observatório Nacional. Diversas reformas levaram a instituição a três ministérios diferentes e mudaram a ênfase do seu trabalho. A tão aguardada mudança para uma nova sede, em São Cristóvão, em 1920, não foi suficiente para que a instituição acompanhasse o ritmo tomado pela astronomia no mundo e se firmasse como ambiente de pesquisa. Uma análise simplificada poderia caracterizar um período de produção científica insignificante, dado o distanciamento da instituição dos novos rumos da astrofísica e da rápida inovação dos instrumentos, além do pequeno volume de publicações. Era uma época em que ainda não existiam os mecanismos formais de apoio e avaliação da atividade científica. Esse trabalho procura identificar a real atividade do Observatório no conteúdo dos Relatórios Ministeriais que, ao final de cada ano, apresentava as atividades, sucessos e problemas enfrentados pela instituição. Questões como instrumental e recursos humanos necessários; entraves burocráticos e financeiros; e articulações com outros observatórios se complementaram entre si ao longo desses anos para definir o perfil institucional e alguns aspectos fundamentais para a construção da astronomia no país. É possível concluir que a ênfase em serviços geográficos e de meteorologia, ao lado da inadequação dos instrumentos e do local, quase fizeram desaparecer a pesquisa em astronomia. Porém, vale destacar a sobrevivência de alguns trabalhos, como, por exemplo, variação de latitude e observação de estrelas duplas que mantiveram importante intercâmbio com outros grupos de pesquisa, demonstrando o constante esforço dos astrônomos e das diretorias em defesa da atividade científica.

Rodrigues, T.

2003-08-01

93

Efetividade no Ensino Superior Brasileiro: Aplicacao de Modelos Multin´õvel ` A Analise dos Resultados do Exame Nacional de Cursos  

Microsoft Academic Search

Este estudo tem por objetivo analisar o impacto de caracter´õsticas institucionais sobre o desempenho dos alunos no Exame Nacional de Cursos (Provao). Uma amostra de mais de 74.000 alunos dasareas de Administracao, Direito e Engenharia Civil que realizaram os exames no ano de 2000 foi analisada. Foram estimados modelos multin´õvel, pois estes dados apresentam uma n´õtida estrutura hierarquica. Relativamente aos

Maria Dolores Montoya Diaz

2007-01-01

94

Development and first year of results from the Heliometer of Observatório Nacional  

NASA Astrophysics Data System (ADS)

Recent research on global climate changes points to three distinct sources of climate disturbance: anthropogenic; natural changes in the oceans and atmosphere; and irregularities in the solar cycles. One of the most direct ways to survey an exogenous component of the climatic variability is through the measurement of variations in the diameter and shape of the solar disk. At Observatório Nacional/MCTI, Rio de Janeiro, after several years of diameter observation using a CCD Solar Astrolabe, these measurements are now performed by a state-of-the-art Solar Heliometer. The heliometric method is one of the most successful techniques to measure small variations of angles. Its principle has been used for the latest space borne astrometric missions, aiming to milli-arcsecond precision. The success of this method relies in the fact that it minimizes the dependence of angular measurements to the thermal and mechanical stability of the instrument. However in the classic heliometer the objective is split into two halves to which is applied a linear displacement along the cut, thus still leaving room for a residual dependence with the focus, due to non-concentricity of the beams of the two images. The focus variation, as well as the effects brought by the large temperature variations during solar observations, was tackled in the Solar Heliometer by having all optical elements and their niches made on CCZ, and the telescope tube on carbon fiber, both materials of negligible thermal coefficient. Additionally, the measures are made perpendicular to the separation direction and the plate scale can be known at every time from the solar motion itself. We present the results from the first year of measurements, in special exploring the upheaval of solar activity on late 2011.

Andrei, Alexandre H.; D'Ávila, Victor A.; Neto, Eugânio Reis; Penna, Jucira L.; Boscardin, Sérgio C.; Coletti, Alissandro; Oliveira, Luiz C.; Sigismondi, Costantino

2013-07-01

95

The Development and First Year of Results from the Heliometer of the Observatorio Nacional  

NASA Astrophysics Data System (ADS)

Recent research on global climate changes points to three distinct sources of climate disturbance: anthropogenic; natural changes in the oceans and atmosphere; and irregularities in the solar cycles. One of the most direct ways to survey an exogenous component of the climatic variability is through the measurement of variations in the diameter and the shape of the solar disk. At Observatorio Nacional/MCTI, Rio de Janeiro, after several years of diameter observation using a CCD Solar Astrolabe, these measurements are now performed by a state-of-the-art Solar Heliometer. The heliometric method is one of the most successful techniques to measure small variations of angles. Its principle has been used for the latest space borne astrometric missions, aiming to milli-arcsecond precision. The success of this method relies in the fact that it minimizes the dependence of angular measurements to the thermal and mechanical stability of the instrument. However in the classic heliometer the objective is split into two halves to which is applied a linear displacement along the cut, thus still leaving room for a residual dependence with the focus, arising from due to non-concentricity of the beams of the two images. The focus variation, as well as the effects brought by the large temperature variations during solar observation was tackled in the Solar Heliometer by having all optical elements and their niches made on CCZ, and the telescope tube on carbon filter, both materials of negligible thermal coefficients. Additionally, the measures are made perpendicular to the separation direction and the plate scale can be known at every time from the solar motion itself. We present the results from the first year of measurements, in special exploring the upheaval of solar activity on late 2011.

Humberto Andrei, Alexandre; Penna, Jucira; Boscardin, Sergio; Reis Neto, Eugenio; Davila, Victor; Sigismondi, Costantino; Coletti, Alissandro; Oliveira, Luiz Carlos

2012-07-01

96

Impact of natural climate change and historical land use on vegetation cover and geomorphological process dynamics in the Serra dos Órgãos mountain range in Rio de Janeiro State, Brazil  

NASA Astrophysics Data System (ADS)

The Serra dos Órgãos mountain range in the hinterland of Rio de Janeiro contains extensive remnants of the Atlantic Forest (Mata Atlântica) biome, which once covered about 1.5 million km² from Northeast to South Brazil and further inland to Paraguay and Argentina. As a result of historical deforestation and recent land use intensification processes today only 5 to 8% of the original Atlantic Forest remains. Despite the dramatic habitat loss and a high degree of forest fragmentation, the remnants are among the Earth’s most diverse habitats in terms of species richness. Furthermore, they are characterized by a high level of endemism. Therefore, the biome is considered a "hotspot of biodiversity". In the last years many efforts have been taken to investigate the Mata Atlântica biome in different spatial and time scales and from different scientific perspectives. We are working in the Atlantic Forest of Rio de Janeiro since 2004 and focus in our research particularly on Quaternary landscape evolution and landscape history. By means of landscape and soil archives we reconstruct changes in the landscape system, which are mainly the result of Quaternary climate variability, young tectonic uplift and human impact. The findings throw light on paleoecological conditions in the Late Quaternary and the impact of pre-colonial and colonial land use practices on these landscapes. In this context, a main focus is set on climate and human-driven changes of the vegetation cover and its consequences for the geomorphological process dynamics, in particular erosion and sedimentation processes. Research methods include geomorphological field studies, interpretation of satellite images, physical and chemical sediment and soil analyses as well as relative and absolute dating (Feo/Fed ratio and 14C dating). For the Late Quaternary landscape evolution, the findings are compared with results from paleoclimatic and paloecological investigations in Southeast and South Brazil using other dating techniques, such as pollen analysis. The impact of early civilizations on deforestation, forest fragmentation and geomorphological process dynamics is estimated on the basis of archaeological and anthropological findings. Furthermore, historical sources, such as written documents, maps, paintings and photographs, were collected and analysed to get a more detailed picture of the younger landscape history. As a result we present a landscape genetic model for the Late Quaternary in the Serra dos Órgãos mountain range and the Guanabara Basin. Based on a functional analysis of the natural process dynamics we reconstruct the human impact on the vegetation cover and related erosion and sedimentation processes in different time periods. According to this, the polycyclic climate fluctuations in the Pleistocene emerge as periods of stability and instability in the landscape system. During dry and cool periods of the Ice Ages forests drew back and erosion processes increased, causing higher erosion and deposition rates on slopes and stronger incision of river beds, accompanied by a deposition of gravels. The colluvial soils presently found in the mountain region were mainly deposited during the last instability period in the Late Pleistocene (Wisconsin) and Early Holocene. With the return of rainforests from their retreats under wetter climate conditions in the mid Holocene, slopes were stabilized under a dense vegetation cover. In the Late Holocene erosion conditions changed again with human deforestation and land use, which led to high erosion rates in the mountainous landscape. Concerning the human impact on rainforests and geomorphological process dynamics we give an overview of the pre-historical (Sambaqui, Tupi) and historical (colonial exploitation cycles) landscape transformation and degradation processes for different landscape units within the Serra dos Órgãos and its floodplains. The results not only give a detailed picture of historical land use patterns and landscape degradation processes, but also contribute to the understanding of rece

Nehren, U.; Sattler, D.; Heinrich, J.

2010-03-01

97

Evaluation of water and sediment of the Graminha and Águas da Serra streams in the city of Limeira (Sp-Brazil) by Synchrotron Radiation Total Reflection X-ray Fluorescence  

NASA Astrophysics Data System (ADS)

The city of Limeira is located in the state of São Paulo, Brazil and has the second largest economy and demographic growth of the state. It comprises an expressive economy with industries in several productive sectors. The source of the Graminha and Águas da Serra streams is located within the Limeira urban zone. The streams cross part of the rural zone and unite by draining into the Piracicaba River. It is possible that these basins suffer or have already suffered the impacts of environmental pollution caused by anthropogenic factors. Since the city has galvanization industries for the production of precious and semi-precious jewels as well as imitation jewelry, the concentration descriptions and interpretations of heavy metals in waters and sediments indicate anthropogenic influence and the dumping of these compounds into the Piracicaba River. The Synchrotron Radiation Total Reflection X-Ray Fluorescence (SR-TXRF) was used for determining the metals. All measurements were performed using a white beam of synchrotron radiation for excitation and a Ge hyperpure detector. Detection limits for water samples were 0.04 ?g L - 1 and in sediment samples 0.03 ?g g - 1 for Cu and Zn elements. In the water samples, concentrations higher than permissible as established by the Brazilian legislation (CONAMA) for Al, Fe, Zn, Cr, Ni, Cu and Pb, were observed. For sediment samples, values higher than quality reference values defined by the Brazilian legislation (CETESB) were verified for Cr, Zn, Cu, Ni and Pb.

Moreira, Silvana; Fazza, Elizete Vieira

2008-12-01

98

Reformulation of Engineering Education at Undergraduate Level in the Faculdad de Ingenieria y Ciencias Hidricas Universidad Nacional del Litoral--Water Resources and Engineering Degrees.  

ERIC Educational Resources Information Center

|This paper explains the educational changes in the Water Resources Engineering program offered by the Universidad Nacional del Litoral in Santa Fe, Argentina, for the last 20 years at the undergraduate level. The need for modernizing the engineering teaching program occurred due to changes in the social system in which the concepts of development…

Theiler, Julio; Isla, Miguel; Arrillaga, Hugo; Ceirano, Eduardo; Lozeco, Cristobal

99

Guia para la ensenanza de la Lengua Nacional (segundo ano) (A Guide to the Teaching of the National Language (second year).  

ERIC Educational Resources Information Center

|This document is an English-language abstract (approximately 1500 words) of a guide based on the results of experiments conducted by the Instituto Nacional de Pedagogia in its pilot school and other schools in Mexico, D. F. The foreword points out that there are two aspects of language teaching in elementary schools--the first year class to read…

Instituto Nacional de Pedagogia (Mexico).

100

Gamma Radiation Dose Rate in Air due to Terrestrial Radionuclides in Southern Brazil: Synthesis by Geological Units and Lithotypes Covered by the Serra do Mar Sul Aero-Geophysical Project  

NASA Astrophysics Data System (ADS)

The absorbed dose rates in air due to terrestrial radionuclides were estimated from aerial gamma spectrometric data for an area of 48,600 km2 in Southern Brazil. The source data was the Serra do Mar Sul Aero-Geophysical Project back-calibrated in a cooperative work among the Geological Survey of Brazil, the Geological Survey of Canada, and Paterson, Grant & Watson Ltd. The concentrations of eU (ppm), eTh (ppm) and K (%) were converted to dose rates in air (nGy.h-1) by accounting for the contribution of each element's concentration. Regional variation was interpreted according to lithotypes and a synthesis was performed according to the basic geological units present in the area. Higher values of total dose were estimated for felsic igneous and metamorphic rocks, with average values varying up to 119+/-24 nGy.h-1, obtained by Anitapolis syenite body. Sedimentary, metasedimentary and metamafic rocks presented the lower dose levels, and some beach deposits reached the lowest average total dose, 18.5+/-8.2 nGy.h-1. Thorium gives the main average contribution in all geological units, the highest value being reached by the nebulitic gneisses of Atuba Complex, 71+/-23 nGy.h-1. Potassium presents the lowest average contribution to dose rate in 53 of the 72 units analyzed, the highest contribution being obtained by intrusive alkaline bodies (28+/-12 nGy.h-1). The general pattern of geographic dose distribution respects well the hypotheses on geo-physicochemical behavior of radioactive elements.

Bastos, Rodrigo O.; Appoloni, Carlos R.; Pinese, José P. P.

2008-08-01

101

Gamma Radiation Dose Rate in Air due to Terrestrial Radionuclides in Southern Brazil: Synthesis by Geological Units and Lithotypes Covered by the Serra do Mar Sul Aero-Geophysical Project  

SciTech Connect

The absorbed dose rates in air due to terrestrial radionuclides were estimated from aerial gamma spectrometric data for an area of 48,600 km{sup 2} in Southern Brazil. The source data was the Serra do Mar Sul Aero-Geophysical Project back-calibrated in a cooperative work among the Geological Survey of Brazil, the Geological Survey of Canada, and Paterson, Grant and Watson Ltd. The concentrations of eU (ppm), eTh (ppm) and K (%) were converted to dose rates in air (nGy{center_dot}h{sup -1}) by accounting for the contribution of each element's concentration. Regional variation was interpreted according to lithotypes and a synthesis was performed according to the basic geological units present in the area. Higher values of total dose were estimated for felsic igneous and metamorphic rocks, with average values varying up to 119{+-}24 nGy{center_dot}h{sup -1}, obtained by Anitapolis syenite body. Sedimentary, metasedimentary and metamafic rocks presented the lower dose levels, and some beach deposits reached the lowest average total dose, 18.5{+-}8.2 nGy{center_dot}h{sup -1}. Thorium gives the main average contribution in all geological units, the highest value being reached by the nebulitic gneisses of Atuba Complex, 71{+-}23 nGy{center_dot}h{sup -1}. Potassium presents the lowest average contribution to dose rate in 53 of the 72 units analyzed, the highest contribution being obtained by intrusive alkaline bodies (28{+-}12 nGy{center_dot}h{sup -1}). The general pattern of geographic dose distribution respects well the hypotheses on geo-physicochemical behavior of radioactive elements.

Bastos, Rodrigo O.; Appoloni, Carlos R. [Applied Nuclear Physics Laboratory-Department of Physics-CCE State University of Londrina Campus Universitario-Rodovia Celso Garcia Cid s/n, Cx. Postal 6001, CEP 86051-990, Londrina, PR (Brazil); Pinese, Jose P. P. [Department of Geosciences-CCE State University of Londrina Campus Universitario-Rodovia Celso Garcia Cid s/n, Cx. Postal 6001, CEP 86051-990, Londrina, PR (Brazil)

2008-08-07

102

Parasitism on Araneus venatrix (Koch, 1838) (Araneae: Araneidae) by Hymenoepimecis silvanae Loffredo and Penteado-Dias, 2009 (Ichneumonidae, Pimplinae) with description of male of the wasp.  

PubMed

The wasp Hymenoepimecis silvanae Loffredo and Penteado-Dias, 2009, was recorded parasitising females of Araneus venatrix. The male of H. silvanae is described and illustrated. Specimens were collected in the Parque Estadual de Intervales and Reserva Biológica Serra do Japi, both located in the state of São Paulo, Brazil. PMID:22437406

Sobczak, J F; Loffredo, A P S; Penteado-Dias, A M

2012-02-01

103

Fenologia de espécies arbóreas em floresta de planície litorânea do sudeste do Brasil1  

Microsoft Academic Search

Phenology of coastal-plain forest tree species from Southeastern Brazil). The present study aims to characterize the reproductive and leafing phenology of tree species of a coastal-plain forest from Southeastern Brazil and to relate the observed patterns with the local biotic and abiotic factors. The study was carried out in the Parque Estadual da Serra do Mar, Núcleo Picinguaba, Ubatuba, São

DANIELA CUSTÓDIO TALORA; PATRÍCIA C. MORELLATO

2000-01-01

104

First 2 years of Atmospheric CO2 measurements in the Estany Llong plain (2100 masl, Parc Nacional d'Aigüestortes i Estany de Sant Maurici, Pyrenees, Catalonia, Spain).  

NASA Astrophysics Data System (ADS)

Since April 2009, air samples are being taken bi-weekly at 10 GMT in the plain of the Estany Llong at 2100 masl. Estany Llong air sampling site (ELL, 42°34'29''N 0°57'17''E) is a remote site situated in the SW principal valley of the Parc Nacional d'Aigüestortes i Estany de Sant Maurici. New Flask-sampling equipment for Remote Mountain Sites was developed by the Institut Català de Ciències del Clima (IC3) to allow flask sampling in extreme weather conditions and carrying the sampling equipment for more than 10 km without damaging flasks. Dry Air analysis for CO2 are done at the Laboratory of IC3 using two coupled modified IRGA Licor-7000, where both pressure and flow are externally controlled. Far away from populated areas, ELL site acts as a remote site, but it is also responding to discrete events as snow melting, summer cattle breeding on pastures and trekking frequentation. Series of CO2 obtained are included as part of Long Term Ecological Research (LTER) at the Parc Nacional d'Aigüestortes i Estany de Sant Maurici. In the long term, these measurements show the mountain ecosystems contribution and geomorphologic influence on the CO2 budget of the air masses crossing a mountain range.

Curcoll, Roger; Recolons, Montserrat; Font, Anna; Agraz, Laura; Parga, Elena; Bacardit, Montse; Camarero, Lluís.; Pueyo, Salva; Rodó, Xavier; Morguí, Josep Anton

2010-05-01

105

Strategies, Programs and Projects 2008 of the Astrophysical Group "SPACE-Universidad Nacional Mayor De San Marcos, Peru" - Preparing for the IYA2009  

NASA Astrophysics Data System (ADS)

We present a review of our efforts to introduce astronomy as scientific career in Peru, showing how our astronomy outreach programs have been one of the most important keys to reach our national astronomical scientific goals, remarking the crucial role that the celebration of the IYA2009 must play, in order to promote PhD programmes in astronomy in developing countries. We show the importance of the creation of the Seminario Permanente de Astronomía y Ciencias Espaciales (SPACE) in the Universidad Nacional Mayor de San Marcos, as an academic scientific and cultural center in Peru, to support our 26 years-old "Astronomical Fridays” which are addressed to wide range of public, from schoolchildren to scientists. We also show how important was to rediscover our ancient astronomical cultural past of Incas in order to promote the construction of a Astronomical Center located near Cusco city over 4000 meters above sea level, which includes a tourist-educational observatory, a scientific optical observatory and a solar radio observatory.

Vera, Victor; Aguilar, M.; Huisacayna, J.

2008-05-01

106

The development of the Heliometer of the Observatorio Nacional of Rio de Janeiro and application to the study of the Sun-Earth system  

NASA Astrophysics Data System (ADS)

This work presents the development and construction of the Heliometer of the Observatório Nacional/MCTI. This instrument is designed to monitor changes on the solar diameter with the accuracy of the next-generation solar satellites. A review of the heliometric method is made and the building and testing of 4 prototypes is described. The instrument has a mirror objective split in dihedral, formed by the hemi-sections of a parabolic mirror. The materials that form the instrument have thermal and mechanical stability to 10^(-7). The number of optical parts is minimized and their quality is greater than {?}/12. An original software for the automated collection and analysis of the images was developed. With its latest version fully developed, we conducted an observational campaign of 9 days, deriving more than 70000 heliometric images of the Sun. The measured solar diameter has a standard deviation of 0.5 arcseconds, with no instrumental bias, and limited only by the provisional atmospheric modeling. Therefore, by improving the statistics, an accuracy at milliarcseconds can be achieved. A study of the correlation between the solar diameter and the geomagnetic field intensity was made. A correspondence between the peaks of the series related to solar activity, namely, the semidiameter variation, the flares index, and the sunspots counts, and the number of negative peaks on the intensity of the geomagnetic field is found. It must be cautioned though that it is a complex correspondence, requiring different modes of response and phase dependence on the stage of the cycle of solar activity. The straightforward interpretation of observational evidence indicates that the semidiameter of the Sun seems to vary significantly prior to the corresponding variations of the geomagnetic field. The effect is most evident in the downward phase of the solar cycle.

Reis Neto, Eugênio

2013-01-01

107

First steps of vulagarization of science in the late ninetheen century: The Yearbook of the Observatorio Astronomico Nacional de Chapultepec, Mexico during the period of Mr. Angel Anguiano (1878-1889)  

NASA Astrophysics Data System (ADS)

Since the founding of the Observatorio Astronomico Nacional de Chapultepec in 1878 during the presidential term of General Porfirio Diaz, begins the publication of the Yearbook of the Observatorio Astronomico Nacional de Chapultepec (from now on OAN) in a period when the positivist paradigm based on will boost science as a means of national progress. Here we describe the actions taken by the observatory's director and editor of the publication, the engineer Angel Anguiano, to initiate and successfully carry out the exchange of scientific publications and / or dissemination through the exchange of the Yearbook of the OAN, both nationally and internationally. The importance of conferences to which he attended started the sharing printed information relating to subjects such as astronomy, meteorology, cartography and geography. The Yearbook was intended to publish two or three months before the beginning of each year and according to the editor would serve to popularize science, making its contents available to anyone with basic knowledge of geometry or for amateur astronomers. I find that the yearbook was the publication that was released to the observatory in the country and abroad, but was sent to distant places where no one speaks or reads Spanish. I think that the content of articles published in, did not respond and objective and informative to the public as mentioned by, because at the late 1800s, 90% of the inhabitants of the Mexican Republic were illiterate and lived in rural areas. The access to the Bulletin was the Mexican intellectual elite grouped into societies, astronomical or meteorological observatories and another wealthy person individually. The same happened abroad. The collection of data from reports to the Secretaria de Fomento, that was the government agency that funds money destined to different scientific institutions founded during this period were published in the Yearbook, the oficios that sent the OAN over a hundred sites in the world responding to the exchange of scientific publications of the mentioned areas through the Library. These documents are available on the Fund of National Astronomical Observatory Historical Archive of the UNAM. The importance of this publication is reflected in the fact that it has continued publishing without interruption since 1881 and gave rise to the Bulletin of the OAN which later became the Boletin del Observatorio Astronomico Nacional de Tacubaya in and finally to the Boletin del Observatorio Astronomico Nacional de Tonantzintla y Tacubaya.

Zueck, S. L.

2011-12-01

108

Mating patterns in squirrel monkeys ( Saimiri oerstedi )  

Microsoft Academic Search

The mating system of squirrel monkeys (Saimiri oerstedi) in Parque Nacional Corcovado, Costa Rica was studied and used to develop a model to interpret the evolution of seasonal sexual dimorphism in squirrel monkeys (Saimiri spp.). Adult male body weights in captivity and the wild may increase more than 20%, beginning approximately two months prior to and continuing through the annual

S. Boinski

1987-01-01

109

Birth synchrony in squirrel monkeys ( Saimiri oerstedi )  

Microsoft Academic Search

The vigilance behaviors and association patterns of adult female squirrel monkeys (Saimiri oerstedi) in Parque Nacional Corcovado, Costa Rica were studied over the annual reproductive cycle to identify a possible adaptive function associated with the unusually close within-group birth synchrony prevalent in Saimiri populations. Raptor association with the troops, predation attempts, and monthly changes in food abundance were also documented.

S. Boinski

1987-01-01

110

Abundance of the brown sea cucumber Isostichopus fuscus at the National Park Bahia de Loreto, México  

Microsoft Academic Search

The Natural Protected Area Parque Nacional Bahia de Loreto, including five adjacent islands, was created in 1996. The park presents rocky and sandy shores, mangrove areas and small patches of reef corals, which have been used for fishing and ecotourism activities. The fishery of the brown sea cucumber Isostichopus fuscus is one of the most peculiar in the Gulf of

H. Reyes-Bonilla; M. D. Herrero-Pérezrul; S. González-Romero; A. González-Peralta; Y. Ramírez-Hernández

111

A New Genus and Species of Lachnophorini and Two New Species of Lebiini from Costa Rica (Coleoptera: Carabidae)  

Microsoft Academic Search

A new genus and new species of Lachnophorini and 2 new species of Lebiini from Costa Rican are described (type localities in parentheses): Quammenis spectabilis, n. gen., n. sp. (type locality: COSTA RICA: Heredia Province, Estacion Magsasay, Parque Nacional Braulio Carrillo, 200m, LN264600,531100); Lebia (Chelonodema) inbio, n. sp. (type locality: Guanacaste Province, Estacion Pitilla, 9 km S Santa Cecilia, 700

Terry L. Erwin

2000-01-01

112

Sweet drinks are made of this: Conservation genetics of an endemic palm species from the Dominican Republic  

Technology Transfer Automated Retrieval System (TEKTRAN)

Pseudophoenix ekmanii is a threatened palm species restricted to the Parque Nacional of Jaragua in the southernmost region of Hispaniola. Sap from individual trees is commonly extracted to make a local drink; once they are tapped the plant usually dies. Additionally, adult plants are harvested for...

113

El valor de uso recreativo de los espacios naturales protegidos. Una aplicación de los métodos de valoración contingente y del coste del viaje  

Microsoft Academic Search

En este articulo se presenta una aplicación de dos de las metodologías desarrolladas para medir los beneficios que se derivan del uso recreativo de los bienes ambientales en ausencia de mercado, el método del coste del viaje (MCV) y el de valoración contingente (MVC). La zona objeto de estudio ha sido el Parque Nacional de “Aigüestortes y Estany de Sant

M. FARRÉ PERDIGUER

2003-01-01

114

Shallow landslide prediction in the Serra de Cubatão, São Paulo  

Microsoft Academic Search

Various methods are currently used in the space and time prediction of the shallow landslides in a scale basin. Between them, the physically based models, such as dSLAM, SINMAP, SHALSTAB and TRIGRS, which present innumerable advantages associated to the physical description of these processes from mathematical equations. The last two ones had been already applied in different areas, including those

B. C. Vieira; N. F. Fernandes; O. Augusto Filho

2009-01-01

115

[The Spanish AIDS Study Group and Spanish National AIDS Plan (GESIDA/Secretaría del Plan Nacional sobre el Sida) recommendations for the treatment of tuberculosis in HIV-infected individuals (Updated January 2013).  

PubMed

This consensus document was prepared by an expert panel of the Grupo de Estudio de Sida (GESIDA [Spanish AIDS Study Group]) and the Plan Nacional sobre el Sida (PNS [Spanish National AIDS Plan]). The document updates current guidelines on the treatment of tuberculosis (TB) in HIV-infected individuals contained in the guidelines on the treatment of opportunistic infections published by GESIDA and PNS in 2008. The document aims to facilitate the management and treatment of HIV-infected patients with TB in Spain, and includes specific sections and recommendations on the treatment of drug-sensitive TB, multidrug-resistant TB, and extensively drug-resistant TB, in this population. The consensus guidelines also make recommendations on the treatment of HIV-infected patients with TB in special situations, such as chronic liver disease, pregnancy, kidney failure, and transplantation. Recommendations are made on the timing and initial regimens of antiretroviral therapy in patients with TB, and on immune reconstitution syndrome in HIV-infected patients with TB who are receiving antiretroviral therapy. The document does not cover the diagnosis of TB, diagnosis/treatment of latent TB, or treatment of TB in children. The quality of the evidence was evaluated and the recommendations graded using the approach of the Grading of Recommendations Assessment, Development and Evaluation Working Group. PMID:23541879

Rivero, Antonio; Pulido, Federico; Caylá, Joan; Iribarren, José A; Miró, José M; Moreno, Santiago; Pérez-Camacho, Inés

2013-03-28

116

Fecundity, fruiting pattern, and seed dispersal in Piper amalago (Piperaceae), a bat-dispersed tropical shrub  

Microsoft Academic Search

This paper describes the nightly and seasonal production of ripe fruit by Piper amalago (Piperaceae), a patchily distributed, bat-dispersed forest shrub, at Parque Nacional Santa Rosa, Costa Rica. Phenological observations over several years indicate that individuals produce a low (usually 1–3) and variable number of ripe fruit each night for 3–4 wks in the early wet season (June and July).

Theodore H. Fleming

1981-01-01

117

Sedimentation rates and metal content of sediments in a Venezuelan coral reef  

Microsoft Academic Search

The sedimentation rate and metal content in trapped sediments were determined at four localities at the Parque Nacional Morrocoy and for a sampling period of 1 year. The sedimentation rate was inversely related to the distance from the main terrestrial sources of sediment and ranged from 44±7 to 281±46 gm?2d?1 (mean±SE) for the farthest two localities (11 km apart). February

C. Bastidas; D. Bone; E. M. García

1999-01-01

118

Water beetles in mountainous regions in southeastern Brazil.  

PubMed

Inventories provide information on the state of biodiversity at a site or for a geographic region. Species inventories are the basis for systematic study and critical to ecology, biogeography and identification of biological indicators and key species. They also provide key information for assessments of environmental change, for natural resource conservation or recovery of degraded ecosystems. Thus, inventories play a key role in planning strategies for conservation and sustainable use. This study aimed to inventory the fauna of water beetles, larvae and adults, in two mountainous regions in the state of São Paulo, in Serra da Mantiqueira (Parque Estadual de Campos do Jordão and Pindamonhangaba region) and in Serra do Mar (Santa Virgínia and Picinguaba Divisions) as well as to generate information about the habitats used by the different genera recorded. Specimens were collected in lotic and lentic systems, between the years 2005 to 2010. In total 14,492 specimens were collected and 16 families and 50 genera of Coleoptera were identified. This study in mountainous regions showed a significant portion of the faunal composition of South America and the state of São Paulo. The composition of the fauna, in terms of richness and abundance by family, indicated the predominance of Elmidae, followed by Hydrophilidae and Dytiscidae. Despite the diversity found, the results of estimated richness indicated the need for additional sampling effort for both regions, since the curves of estimated richness did not reach an asymptote, suggesting that new species can be found in future surveys. PMID:22735139

Segura, M O; Fonseca-Gessner, A A; Spies, M R; Siegloch, A E

2012-05-01

119

HAWC @ Mexico  

NASA Astrophysics Data System (ADS)

The High Altitude Water Cerenkov detector HAWC will be a powefull instrument to survey the TeV sky. Mexico has proposed to locate this experiment in the Parque Nacional Pico de Orizaba, between Citlaltepetl and Tliltepetl, host of the Large Millimeter Telescope (LMT). The region has a sizeable technical infrastructure related to the LMT and we recently studied a 4100m location in terms of its feasibility to host HAWC. We present the proposed site location and extension, its water acquisition, experimental and complementary infrastructures.

Carramiñana, Alberto; Magdalena González, María; Salazar, Humberto; et al.

120

[PORTAL HYPERTENSIVE GASTROPATHY AT HOSPITAL NACIONAL DELSUR - IPSS AREQUIPA  

PubMed

An analytic prospective study was done in cirrhotic patients with Portal hypertension to study a new pathology known as Portal Hypertensive Gastropathy. In 73.3 per cent of patients with cirrhosis, hospitalized inthe Gastroenterology Area, Portal Hypertensive Gastropathy was present. Males in the 4th decade of their life were predominant. Mild gastropathy with a mosaic or snake skin endoscopy pattern was the most frequent (60.6%), while in severe gastropathy, the most common pattern was cherry red spots. These lesions were often located in the stomach fundus and body. All the patients presented some vascular alteration and lymphoplasmocytic inflammatory infiltration. No relation was found between the severity of Portal Hypertension or Advanced Liver Disease and changes of the gastric mucosa. PMID:12215739

Cerpa Polar, Rusby; Castro Valdivia, Raúl; Valdez Herrera, Jesús

121

La agricultura y el bienestar nacional en el mundo  

Microsoft Academic Search

Calculations of marginal welfare effects suggest that agricultural development has had important positive affects on national welfare, especially is developing countries. Latin American and Caribbean (LAC) countries have also benefited from agricultural growth, but non-agricultural production has had marginal welfare effects that are greater in magnitude to those provided by agricultural activities. The industrialized, high-income countries experienced positive marginal welfare

Claudio Bravo Ortega; Daniel Lederman

2009-01-01

122

Nutrición enteral domiciliaria (NED): Registro Nacional del año 2000  

Microsoft Academic Search

Goal: Once again, the NADYA-SENPE Working Group analysed the registered data of Home Enteral Nutrition (HEN) in our country, during the year 2000. Material and methods: The data were collected th- rough a closed questionnaire included on our web site (www.nadya-senpe.com). Apart from epidemiological information, the form includes the indication to prescri- be this treatment, the specific nutritional treatment used

M. Planas; M. Castellá; P. P. García Luna; J. Chamorro; C. Gómez Candela; M. D. Carbonell; J. A. Irles; M. Jiménez; A. Pérez de la Cruz; A. Bobis; A. Rodríguez Pozo; G. Adrio; J. Salas; A. J. Calañas; P. Gómez Enterría; A. Mancha; E. Martí Bonmatí; I. Martínez; A. Celador; E. Camarero; C. Tusón; J. A. Carrera; Grupo NADYA-SENPE

2003-01-01

123

Boletín del Instituto Nacional del Cáncer - 02-02-2010  

Cancer.gov

En un estudio clínico en fase inicial que probó una vacuna terapéutica en pacientes con leucemia mieloide crónica (LMC) que tomaban el fármaco imatinib (Gleevec), no se pudieron detectar células cancerosas en 7 de los 19 participantes por un tiempo promedio de 22 meses. Los resultados del estudio fueron publicados en el número del 1º de enero de la revista Clinical Cancer Research.

124

SIG NO PLANEJAMENTO DE TRILHAS NO PARQUE ESTADUAL DE CAMPOS DO JORDÃO  

Microsoft Academic Search

The aim of this work is to develop a GIS application to give support to planning of ecotouristic trails in the State Park of Campos do J ordão (PECJ). The approach that was adopted to modelling the aplication involved a process of four stages: Application Domain Analysis, Conceptual Model, Logical Model and Physical Model. At the Conceptual level was adopted

Mônica M. S. Decanini

2001-01-01

125

[Social participation and health promotion: a case study in the region of Paranapiacaba and Parque Andreense].  

PubMed

Community participation is considered a key condition for communities to assume control of their health within the scope of health promotion. This study sought to identify and analyze the perceptions of residents of the watershed areas of Santo André/São Paulo with respect to the actions of health education and environmental education developed by the public authorities of the city, and how the local community participates in these processes. Data collection was conducted via structured and semi-structured interviews with civil servants and local residents. The methodology of content analysis proposed by Bardin was used for data interpretation. The main results showed that the health measures developed in the region studied are still predominantly viewed from the standpoint of prevention and not as an educational process able to support and achieve some of the goals of health promotion, such as the development of personal skills and support for community action. Data analysis showed the importance of intersectorial activity and conducting emancipatory educational measures as a key factor for participative procedures and the empowerment of the population. PMID:23358782

Silva, Elaine Cristina da; Pelicioni, Maria Cecília Focesi

2013-02-01

126

Invertebrate drift along a longitudinal gradient in a Neotropical stream in Serra do Cipó National Park, Brazil  

Microsoft Academic Search

The diversity and composition of drift invertebrate assemblages were evaluated along a longitudinal gradient of an altitudinal stream in southeastern Brazil. The main goal of this study was to evaluate the influence of seasonality, stream order, and some abiotic factors on invertebrate drift and the use of drifting invertebrate assemblages to assess aquatic invertebrate diversity. Drift samples were collected over

Marcos Callisto; Michael Goulart

2005-01-01

127

Invertebrate drift along a longitudinal gradient in a Neotropical stream in Serra do CipoNational Park, Brazil  

Microsoft Academic Search

The diversity and composition of drift invertebrate assemblages were evaluated along a longitudinal gradient of an altitudinal stream in southeastern Brazil. The main goal of this study was to evaluate the influence of seasonality, stream order, and some abiotic factors on invertebrate drift and the use of drifting invertebrate assemblages to assess aquatic invertebrate diversity. Drift samples were collected over

Marcos Callisto; Michael Goulart

2005-01-01

128

Interactions between benthic macroinvertebrates and fishes in a low order stream in Campos de Cima da Serra, RS, Brazil.  

PubMed

Benthic macroinvertebrates constitute the link between organic matter input in streams and fishes. However, the possibility of influence of predators on the invertebrates is still a controversial issue. The possibility of alteration of the benthic community by the modification in predation in a stream in the South of Brazil was studied by means of an exclusion experiment under semi-natural conditions. The exclusion showed an increase in the abundance of Plecoptera in the river where the rainbow trout was introduced, the larvae of Trichoptera also increased in abundance in the units of fish exclusion. This difference does not confirm the pressure applied by the trout on the benthic macro fauna due to differences in ichthyofauna and in the habitat of both rivers. Nevertheless, it points to the need for the development of studies concerning the trophic relations and the possible effects of this introduction in the aquatic biota. PMID:19197486

Winckler-Sosinski, L T; Silveira, T C L; Schulz, U H; Schwarzbold, A

2008-11-01

129

Study Pf Apatite Accurrence from Gaviao and Serra de Jacabina Gold Deposit by Scintillometry and gamma Spectrometry.  

National Technical Information Service (NTIS)

This work presents the results of radiogeologic reconnaissance in the Cenozoic, Mesozoic and Pre-Cambrian formations, localized between Salvador and Miguel Calmon, and of the radiogeologic detail study from areas of the radioactive anomalies: Gaviao in th...

P. T. Barreto

1974-01-01

130

Effects of the 1991-92 El Niño on scleractinian corals of the Costa Rican central Pacific coast.  

PubMed

Coral communities on the central Pacific coast of Costa Rica were affected during the 1991-92 El Niño warming event. More than 57% of all observed colonies at three localities (Parque Nacional Manuel Antonio, Punta Cambutal, and Parque Marino Ballena) were bleached. Mortality during this El Niño was much lower (approximately 9%) than in previous events. Psammocora spp. accounted for approximately 66% of dead corals, while massive (Porites lobota, Pavona spp.) and branching (Pocillopora spp.) for approximately 34%. Our results suggest that the observed bleaching in P. lobata was related to zooxanthellar densities and not to changes in pigment concentrations: only chlorophyll a varied between normally pigmented and bleached colonies at one locality (Ballena). Site differences in zooxanthellar densities or their pigment concentrations, may not be the result of the bleaching event itself, because a percentage of dead corals and zooxanthellar densities of bleached colonies seems to follow a trend with the exposure to tidal regimes and currents at each site. Local oceanographic conditions can be influencing the zooxanthellar densities and their response to the warming, together with intrinsic differences between colonies as well. The impact of this event can be considered serious given the short period of time that elapsed between El Niño related mortalities and the slow reefs recovery, the mode of reproduction of reef building species, and the anthropogenic-originated disturbances which affect the coral communities and reefs of the Costa Rican central Pacific coast. PMID:15264538

Jiménez, C; Cortés, J

2001-12-01

131

A new species of dactyloid anole (Iguanidae, Polychrotinae, Anolis) from the southeastern slopes of the Andes of Ecuador.  

PubMed

We describe a new species of Anolis from the southeastern slopes of the Andes of Ecuador, province of Zamora-Chinchipe, Parque Nacional Podocarpus. It belongs to (1) the aequatorialis species-group by being of moderate to large size with narrow toe lamellae, and (2) the eulaemus sub-group by having a typical Anolis digit, in which the distal lamellae of phalanx II distinctly overlap the proximal scales of phalanx I. The new species is most similar morphologically to Anolis fitchi but differs from it mainly by having a dewlap with longitudinal rows of 2-5 granular, minute scales separated by naked skin (longitudinal rows of one or two keeled, large scales separated by naked skin in Anolis fitchi) and a vertically shorter dewlap (longer dewlap in Anolis fitchi). PMID:21594133

Ayala-Varela, Fernando P; Omar, Torres-Carvajal

2010-08-27

132

Phoenix Rising: The Helen Sawyer Hogg Telescope Finds a New Home in Argentina.  

NASA Astrophysics Data System (ADS)

For 26 years (1971-1997), the University of Toronto operated a very productive 60-cm optical telescope on Carnegie's Cerro Las Campanas in north-central Chile. Due to a series of cutbacks in subsidies through NSERC, Canada's research-funding agency, the doors were closed on 01 July 1997 (Canada Day). Following an agreement between astronomers at DDO (Canada) and CASLEO, Argentina, the telescope and dome were relocated on Cerro Burek in Parque Nacional El Leoncita, Argentina, just on the other side of the Andes from Ovalle, Chile. The new building is 3 meters higher and has a dozen ventilating windows. The result is unexpectedly superior seeing. The average point spread function is 0.7 arcseconds. During construction of the building and rebuilding of the telescope, all decisions were made with the intention of operating the telescope remotely, initially from the warmroom of the CASLEO 2.15 meter telescope and ultimately from Toronto and San Juan.

Garrison, R. F.; Levato, O. H.

2004-12-01

133

Quantifying remaining forested habitat within the historic distribution of the cotton-top tamarin (Saguinus oedipus) in Colombia: Implications for long-term conservation.  

PubMed

Landsat Thematic Mapper (TM) data were used to classify forested areas within the historic distribution of the endangered cotton-top tamarin (Saguinus oedipus) in Colombia. This species continues to be threatened by habitat destruction, and we observed a 31% decrease of the forested habitat within the tamarins' historic distribution in 1990-2000. It is estimated that since the establishment of some protected areas for cotton-top tamarins and other native Colombian wildlife (Parque Nacional Natural Paramillo, Santuario de Fauna y Flora Los Colorados, and Reserva Forestal de Montes de Maria), almost 43% of the original forested area has been lost. Given that the human population of Colombia increases annually by 1.6% [Patel, 2002], it is important to target specific areas for tamarin protection while creating mitigation strategies to compensate for economic growth. The results of this study provide valuable information to assist in the long-term development of effective conservation strategies for this endangered primate. PMID:15580586

Miller, L; Savage, A; Giraldo, H

2004-12-01

134

ADOLESCÊNCIA, SEXUALIDADE E MÍDIA: UMA BREVE REVISÃO DA LITERATURA NACIONAL E INTERNACIONAL  

Microsoft Academic Search

This study had as objective identify to the existing production concerning the subjects adolescence, sexuality and media. To carry it out, surveys in international and national databases had been done, using related describing terms to the subject. In the joined references the subjects more investigated by its authors had been identified, being between them: informative rule of the media, the

Raquel de Barros; Pinto Miguel

2007-01-01

135

Physics Department, Universidad Nacional de Colombia, Of. 370, Edif. 404, Ciudad Universitaria, Bogotá, Colombia  

NASA Astrophysics Data System (ADS)

The vibrational modes of a C molecule irradiated with ultrafast laser pulses are studied, using a tight binding approach with variable occupations. It is shown that for the same level of electronic excitation, measured through the electronic temperature, each mode suffers a distinct softening. Excited trajectories below and above the damage threshold, are examined. It is shown that the bond breaking processes and the ulterior fragmentation might be described in terms of the activation of softened vibrational modes; and that the changes in frequency can be dramatically larger than those estimated with the isothermal model.

Rios, Carlos; Valencia, Felipe

2010-08-01

136

[Clindrical battery in the stomach in the Instituto Nacional de Salud del Niño, Lima, Peru].  

PubMed

The ingestion of foreign bodies (EC) is a problem commonly seen by pediatricians and emergency physicians. The intake is almost always accidental and most common objects are coins, pieces of toys, jewelry or batteries. The button batteries are the most common, in which case is important early diagnosis and removal. The cylindrical battery ingestion is very rare, are typically alkaline manganese or nickel-cadmium (rechargeable) and when ingested they can cause toxic and corrosive damage. Such damage may occur as a result of the effect of acid gastric contents sustained over a period of days or weeks. We report the case of a patient who accidentally ingested a cylindrical battery, which was removed from the stomach endoscopically without complications. PMID:23838943

Alarcón Olivera, César; Ormeño Julca, Alexis

137

Conservación de material histórico sobre papel en el Observatorio Astronómico de la Universidad Nacional de Córdoba  

NASA Astrophysics Data System (ADS)

At the recently created Astronomical Museum ``Pte. Sarmiento - Dr. Benjamin Gould", the task of preventive conservation of historic documents has been faced. These materials include: 1) letters exchanged between national authorities and the directors of the Observatory, during the first decades (1870-1880-1890); b) original observation logs from these very first times, containing astrometrical and photometrical data; c) a variety of ancient books and papers; d) administrative documents. The state of conservation of this patrimony was varied: since well-conserved books and letters, to highly degraded logs. The observation logs written by B. Gould and the astronomers who followed him had been stocked in a safe with a permanent humidity of about 70 %, without any ventilation and exposed to the attack of insects of the family ``dermestidae." These conditions could not be worse for the conservation of paper. In order to stop the proccess of degradation and create a healthy environment for written-paper conservation, a team was formed with personnel belonging to the Cultural Area of the Municipality. The tasks being performed on the observation logs are: 1) an initial, mechanical cleaning, performed once the material is extracted from the contaminated safe: by these means, adult insects and pupas are removed 2) a stage of about two weeks of duration, in which the logs are mantained in a vacuum chamber, in orden to completely eliminate the adult, pupa and egg stage insects by anoxia 3) the final mechanical cleaning 4) storage in a clean location. In order to perform these tasks, we work in collaboration with the Environmental Observatory of the City, and the group of Material-Science Research of Fa.M.A.F. Regarding the letters, a mechanical cleaning was performed. After that, the letters were digitized by means of a scanner, inventoried, put inside acid-free polipropylene envelops and filed for conservation, protected from intense light and external sources of contamination. Copies of these letters will be included as exhibits.

Laguzzi, N.; Tonini, A.; Andreoli, G.; Goldes, G.; Paolantonio, S.; Cequeira, F.; Landi, L.; Alba, J.

138

BEITRÄGE ZUR SAMMLUNG LAGUNILLAS DES MUSEO NACIONAL DE BELLAS ARTES IN HAVANNA (KUBA)  

Microsoft Academic Search

La Collection Lagunillas à La Havane, qui porte le nom de son fondateur Joaquín Gumá Herrera, comte de Lagunillas, est une des plus importantes collections d'art antique d'Amérique latine. Elle comprend quelque cinq cents objets d'art égyptien, grec et romain formant un ensemble clairement structuré autour de pièces importantes dans le domaine des vases attiques et de la sculpture de

OTHMAR JAEGGI; STEPHAN G. SCHMID

1996-01-01

139

Merit Pay, Scientific Production and Comision Nacional Evaluadora de la Acitividad Investigadora del Profesorado Universitario  

ERIC Educational Resources Information Center

Some authors have given the CNEAI (National Commission for the Evaluation of Research Activity) a notorious role in the promotion of scientific research in Spain when considering the requirements for this institution as one of the essential elements in the increase of the Spanish scientific production in the last few years. We hereby expose that…

Polo, Gema; de las Heras, Gustavo

2008-01-01

140

Measurements of the Apparent Solar Diameter with Astroable at Observatório Nacional - 1997/2000  

NASA Astrophysics Data System (ADS)

Observations of the solar diameter are affected by a number of experimental difficulties. The metrological qualities of the astrolabe have rendered the modified CCD solar astrolabe a very reliable instrument for these measurements. The average value for the solar semi-diameter measured at O.N. is 959".16 ± 0".01, for ?= 563.5 nm, and an effective bandpass of 168 nm To improve the signal to noise ratio, the images are treated for flat field. This includes distortions brought about by the COHU 4710 camera, the astrolabe optics, and by the system of filters used to cut down the incoming solar light. All frames are taken with constant integration time (0.2 sec), thus dark current effects are taken into account in the flat field mask. IRAF routines are used, while complementary procedures were developed by the authors. The extensive series observed (more than 12000 independent measures) is examined as a time series, using different methods, such as CLEAN and Fourier series, in order to check for the robustness of the answers. The prevalent conditions during the measurements are analyzed and their importance for the quality of the results is discussed. Conclusions are drawn about the statistical significance of the periodicities and features found.

Andrei, A. H.; Reis Neto, E.; Penna, J. L.; de Almeida, W. G.; D'Ávila, V. A.; Puliaev, S. P.; Jilinski, E. G.

141

Primera conferencia a nivel nacional para tratar asuntos genéticos importantes para la población hispana/latina  

Cancer.gov

La reunión cumbre de la Red de Consulta Comunitaria Hispana/Latina en Genética (HLGCCN, por sus siglas en inglés), la primera reunión de este tipo, se llevará a cabo en Washington, D.C., del 22 al 24 de junio de 2003.

142

Activities of the Development Branch (Comision Nacional de Energia Atomica, Buenos Aires, Argentina) 1978-1981.  

National Technical Information Service (NTIS)

The activities carried out by the Development Branch from 1978 through 1981 are summarized. Subjects covered include: Metallurgy, Nuclear Fuels, Instrumentation and Control, Nuclear Reactors, as well as the various projects developed during this period an...

R. Candame de Gallo M. R. E. Marrapodi L. B. Baez

1982-01-01

143

Inconsistencias en la seguridad nacional de Vicente Fox y la relacion con Estados Unidos  

Microsoft Academic Search

The central argument of this dissertation is to examine how the political regime which emerged from the Mexican Revolution confused its own security with the security of the Nation-State between 1928 and the year 2000. Nevertheless, that was the type of relationship supported by Washington because it helped to preserve its own interests of stability and security in its Southern

Abelardo Rodriguez Sumano

2007-01-01

144

VIGILANCIA NACIONAL DE LA RESISTENCIA A MEDICAMENTOS ANTITUBERCULOSOS, PERÚ 2005-2006  

Microsoft Academic Search

Objective. To determine the anti-tuberculosis drug resistance prevalence in Peru. Material and methods. We performed a conglomerated sampling in 33 health regions from Peru. We used a Canneti proportions method in solid medium L-J for testing Mycobacterium tuberculosis susceptibility with isoniazid (INH) rifampicin (RMP), streptomycin (SM) and ethambutol (EMB). Strains with TB MDR was evaluated to second line drug susceptibility

Luis Asencios; Neyda Quispe; Alberto Mendoza-Ticona; Elena Leo; Lucy Vásquez; Oswaldo Jave; César Bonilla

2009-01-01

145

The acoustic design of the Centro Nacional de las Artes in Mexico City  

NASA Astrophysics Data System (ADS)

In this paper the acoustic design of the separate buildings housing the school of music, school of drama, and school of dance that opened in 1996 will be described. Spaces that JHA designed included practice rooms, studios, rehearsal rooms, black box, and concert hall. Details of room acoustic treatments, sound isolation measures, and venturi air flow will be illustrated. An overview of the entire project will also include the 500 seat multipurpose theater (with variable absorption systems) and the Alla Magna. Differences between the American and Mexican styles of consulting, importing of materials, installation, and commissioning will also be discussed.

Cooper, Rusell

2002-11-01

146

Ciencia-ficcion Cubana: El proyecto nacional del hombre nuevo socialista  

Microsoft Academic Search

The Cuban and Latin American literary canon does not pay much attention to the development of the science fiction genre. However, the study and incorporation of this genre is key to the complete understanding of such canon. This investigation focuses on the relationship between the traditional Cuban literary canon and the ideas brought up by the 1959 revolution on the

Juan Carlos Toledano Redondo

2002-01-01

147

Boletín del Instituto Nacional del Cáncer - 3 de enero de 2012  

Cancer.gov

Dra. Rachel Ballard-Barbash Nuevos indicios del papel de la obesidad en el cáncer A medida que ha aumentado la prevalencia de la obesidad alrededor del mundo, se ha incrementado también la preocupación sobre sus consecuencias en la salud pública. Los índices de obesidad se han más que duplicado desde 1980, según la Organización Mundial de la Salud.

148

Boletín del Instituto Nacional del Cáncer - 27 de marzo de 2012  

Cancer.gov

Le invitamos a que comparta esta publicación con sus amigos, familiares y colegas y nos ayude a continuar nuestra misión de difundir las investigaciones más recientes sobre la prevención, el tratamiento y la información del cáncer.

149

Memoria del Primer Seminario Nacional de Energia (Memoir of the First Seminar on Energy).  

National Technical Information Service (NTIS)

This report is a collection of papers presented at a seminar on energy held in Costa Rica. The studies concentrate on the countries of Central America. Conclusions and recommendations are given for solar, wind, and biomass energy. Hydraulic resources in C...

1978-01-01

150

Boletín del Instituto Nacional del Cáncer - 31 de enero de 2012  

Cancer.gov

Dr. Nils Daulaire Salud mundial a través de la colaboración y el liderazgo Para conmemorar el Día Mundial del Cáncer que tuvo lugar el 4 febrero, el doctor Nils Daulaire, director de la Oficina de Asuntos Internacionales del Departamento de Salud y Servicios Humanos de los Estados Unidos habla sobre las razones por las cuales los Estados Unidos deben participar en iniciativas para mejorar la salud mundial.

151

Hydrogeochemistry of a Small Catchment in Northeastern Amazonia: a Comparison Between Natural with Deforested Parts of the Catchment (Serra do Navio, Amapá State, Brazil)  

Microsoft Academic Search

To undertake a comprehensive study of the disturbanceeffects due to mining activities (manganese oreexploitation) on the chemical composition of drainagewaters, a 164 ha catchment in North-eastern Amazoniatropical forest was sampled weekly for a year period(June 1993 to June 1994) to determine the contrasts inrainwater, throughfall and stream water chemistrybetween the upper undisturbed area and the lower partaffected by deforestation and

M. C. Forti; R. Boulet; A. J. Melfi; C. Neal

2000-01-01

152

Cardiac risk evaluation in patients from Salvador do Sul, São Pedro da Serra e Barão, RS, according Framingham Risk Score (FRS)  

Microsoft Academic Search

SUMMARY The cardiovascular diseases constitute the main cause of mortality in the world and its significant increase in developing countries alerts to a great impact of these diseases in low budget population. The present work was performed at the Chiesa Laboratory, São Salvador Hospital, Salvador do Sul in Rio Grande do Sul State. The of this work was to evaluate

TES AMBULATORIAIS DE SALVADOR; PEDRO DA SERRA E BARÃO; Horácio Chiesa; Rafael Noal Moresco; Andreza Fabro de Bem

153

Bleaching and mortality of reef organisms during a warming event in 1995 on the Caribbean coast of Costa Rica.  

PubMed

Coral reefs at the Caribbean coast of Costa Rica were affected during a bleaching event associated with the 1995 warming of the Western Caribbean. During doldrum weather in late August 1995, reef organisms at Parque Nacional Cahuita were 62% and 7.4% bleached and dead respectively, whilst 67.6% bleached and 8.2% died in the Refugio Nacional de Vida Silvestre Gandoca-Manzanillo. However, Cahuita had the highest mean number of bleached (257 +/- 51.1) and dead (30.5 +/- 5.6) colonies in the surveyed transects, and bleaching was observed down to a depth of 20 m. The most affected species (>10% of dead colonies) were the hydrocoral Millepora complanata and the scleractinian corals Montastraea spp. at Cahuita, and Porites furcata, Porites porites and M. complanata at Gandoca-Manzanillo. Mean seawater temperature was between 30.5 and 31.1 degrees C (0-18 m depth) during four days of observation at the end of August 1995. Coral reefs of the Costa Rican Caribbean coast have shown a rapid decline during the last 20 years due to natural and anthropogenic disturbances. The effect of the 1995 warming added more pressure to the already deteriorated reefs. PMID:15264537

Jiménez, C

2001-12-01

154

Mapeamento DA Vegetacao/USO DA Terra de Areas Indigenas Utilisando-Se Dados TM/LANDSAT (Mapping of Vegetation/Land Use of Indigenous Areas Utilizing TM/LANDSAT Data).  

National Technical Information Service (NTIS)

The objective of this work is to provide environmental information about indigenous areas (Ananas Ponta da Serra, Cajueiro, Ouro, Araca, Serra da Moca, Recanto da Saudade). The study area is located in Boa Vista, Bonfim, and Alto Alegre municipalities in ...

P. Hernandezfilho K. Defaria

1990-01-01

155

El valor de uso recreativo del Parque Natural de L'Albufera a través del método indirecto del coste de viaje  

Microsoft Academic Search

La valoración económica de bienes que carecen de mercado, como son los espacios naturales protegidos, proporcionan una valiosa información que puede ser utilizada en el análisis coste-beneficio como fundamento de las decisiones públicas que afectan a la calidad del medio ambiente. En este trabajo se aplica el método indirecto del coste de viaje individual para obtener el valor de uso

S. DEL SAZ SALAZAR; L. PÉREZ Y PÉREZ

1999-01-01

156

Variation of Indoor Radon Levels in Some Caves of Parque Estadual Turistico do Alto Ribeira (PETAR), SP, Brazil with Ventilation and Rain  

SciTech Connect

In order to assess the radon exposure for the tour guide workers, radon levels in several galleries of the most visited caves of PETAR (High Ribeira River Turistic State Park), were determined by using Makrofol E tracks detectors. A two-years surveillance, from 2003 to 2005, showed radon average levels varying from 153{+-}44 Bq{center_dot}m{sup -3} to 6358{+-}1619 Bq{center_dot}m{sup -3}. Those results showed that the wide variation between the minimum and maximum concentrations values are strongly related with cave ventilation. In order to establish other factors contributing to this variation, beside the well known temperature effect, rain data over the entire period were also considered, showing that, apparently, radon concentrations inside the caves rise with drought.

Alberigi, Simone; Pecequilo, Brigitte Roxana Soreanu [Institutu de Pesquisas Energetical e Nucleares (IPEN/CNEN-SP) Av. Professor Lineu Prestes 2242 05508-000 Sao Paulo, SP (Brazil)

2008-08-07

157

Alimentación de mamíferos de caza en los «aguajales» de la Reserva Nacional de Pacaya-Samiria (Iquitos, Perú) Feeding of game animals on «aguajales» in the Reserva Nacional Pacaya Samiria (Iquitos, Peru)  

Microsoft Academic Search

. Finalmente, en los aguajales fueron registradas 16 especies de plantas alimenticias, la mayoría habitando en los aguajales semi-eutrofizados; de ellas, el aguaje (Mauritia flexuosa L.f.), la shapaja (Scheelea cephalotes Poepp. Ex Mart) y los renacos (Ficus spp.), constituyeron los recursos alimenticios más importantes, de cuyos frutos y semillas se alimentaron alrededor de 14 especies de mamíferos de caza. Palabras

Rolando Aquino

158

Abuso de Inhalantes. Instituto Nacional Sobre el Abuse de Drogas. (Inhalant Abuse. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

National surveys indicate that more than 22.9 million Americans have abused inhalants at least once in their lives. NIDA's Monitoring the Future study reveals that approximately 17.3 percent of eighth-graders have abused inhalants. Parents and children ne...

2005-01-01

159

[Consensus report for the clinical care of smoking cessation in Spain. Comité Nacional para la Prevención del Tabaquismo].  

PubMed

Tobacco use presents an odd confluence of circumstances: it is a significant and high threat to health, and there is a lack of motivation among health workers to act accordingly. Yet we have effective interventions. It is really hard to identify any other determinant of health presenting this mixture of lethality, prevalence, and lack of care, despite having effective treatments readily available. On the other hand, smoking cessation interventions are considered as the gold standard of preventive interventions, far above other preventive measures commonly used. This has prompted the National Committee for Smoking Prevention to develop a consensus document for the Clinical Care of Smoking Cessation in Spain. The purpose of this technical and scientific document is to agree on a basic proposal of quality of care to tackle smokers to quit. This document would serve as a guideline in the clinical practice in our country. The aims of this agreement are to review the effectiveness of the existing therapies for smoking cessation, to synthesize their available evidence, and to set the basic minimum standards of care in the clinical practice of patients who smoke. The consensus sets the strategies, and the evidences that support them, in order to assist both the smokers who want to quit, and the smokers who do not, setting out the steps to intervene in the most adequate. PMID:23246167

Camarelles Guillem, Francisco; Dalmau González-Gallarza, Regina; Clemente Jiménez, Lourdes; Díaz-Maroto Muñoz, José Luis; Lozano Polo, Adelaida; Pinet Ogué, María Cristina

2012-12-13

160

Panorama del Analisis Nacional del TRI Compendio de Emisiones Toxicas, 2011 (Toxics Release Inventory National Analysis Overview, 2011).  

National Technical Information Service (NTIS)

Tens of thousands of chemicals are used by industries and businesses in the United States to make the products on which our society depends, such as pharmaceuticals, clothing, and automobiles. Many of the chemicals needed to create these products are toxi...

2013-01-01

161

International Beacon Satellite Symposium 1990, Universidad Nacional de Tucuman, San Miguel de Tucuman, Argentina, Mar. 27-30, 1990, Proceedings  

NASA Astrophysics Data System (ADS)

The present conference on beacon satellites encompasses ionospheric scintillations observations and modeling, the effects of large- and small-scale irregularities, TEC observations and modeling, ionospheric storm effects, as well as new approaches and techniques. Specific issues addressed include the role of the atmosphere in satellite geodesy, irregularities in the size of spike-type ionospheric scintillation, spatial estimates of Rayleigh-Taylor instability at the geomagnetic equator, differential Doppler-shift observations of ionospheric irregularities, electron-content studies in Argentina, and TEC obtained from ionogram data alone. Also addressed are solar-cycle differences in TEC for low solar activity, solar and magnetic activity effects on the latitudinal variations of nocturnal enhancement in TEC, ionospheric disturbance effects in F-region behavior, the software-receiver approach, and ionospheric imaging using multifrequency satellite beacons.

Manzano, Jose R.

162

Plan Nacional de Desarrollo y Seguridad 1971-1975 (National Plan for Development and Security, 1971-1975).  

ERIC Educational Resources Information Center

This article discusses the education provisions established in the Argentine Plan for Development and Security (1971-1975). The statements on educational development call for a diagnostic study of the current cultural and educational situation, the establishment of objectives and strategies, goals for each level of education, steps for the…

Boletin del Centro Nacional de Documentacion e Informacion Educativa, 1971

1971-01-01

163

Technical Assistance for Digital Broadcast Standards. Executive Summary. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

164

Mujer, nacion y progreso en el discurso del exilio de Clorinda Matto de Turner y Juana Manuela Gorriti  

Microsoft Academic Search

The reason for researching the narrative of Juana Manuela Gorriti and Clorinda Matto de Turner is to understand the role they performed in a patriarchal society at the end of the 19th century and how they are able to project through their voice in pro of modernity not only in their respective countries, but also be able to go beyond

Alvaro M. Torres-Calderon

2006-01-01

165

EFETIVIDADE NO ENSINO SUPERIOR BRASILEIRO: APLICAÇÃO DE MODELOS MULTINÍVEL À ANÁLISE DOS RESULTADOS DO EXAME NACIONAL DE CURSOS  

Microsoft Academic Search

This study analyses the impact of institutional characteristics on the students' performance in the National Examination of Higher Education Courses (Provão). A sample of more than 92500 students from Management, Law and Civil Engineering who had made the tests in the year 2000 was analyzed. Multilevel models have been fitted because these data present an evident hierarchical structure. Regarding individual

Maria Dolores Montoya Diaz

2005-01-01

166

Utilização de métodos invasivo e não invasivo na predição das performances aeróbia e anaeróbia em nadadores de nível nacional  

Microsoft Academic Search

Use of invasive and non-invasive protocol tests on aerobic and anaerobic performances prediction in Brazilian swimmers The purpose of this study was to compare the critical velocity (VC) with the anaerobic threshold (LAN) and verify the relationship among VC and LAN with anaerobic swimming capacity (CTA) with the swimmer's performance in the 15m, 25m, 50m, 100m, 200m, 400m distances in

Marcelo Papoti; Alessandro M. Zagatto; Olga C. Mendes; Claudio A. Gobatto

167

[Sporangia ontogeny and sporogenesis of the lycopodium Huperzia brevifolia (Lycopodiaceae) from the high mountains of Colombia].  

PubMed

Huperzia brevifolia is one of the dominant species of the genus Huperzia living in paramos and superparamos from the Colombian Andes. A detailed study of the sporangium's ontogeny and sporogenesis was carried out using specimens collected at 4200m above sea level, in Parque Natural Nacional El Cocuy, Colombia. Small pieces of caulinar axis bearing sporangia were fixed, dehydrated, paraffin embedded, sectioned in a rotatory microtome, and stained using the common Safranin O-Fast Green technique; handmade cross sections were also made, stained with aqueous Toluidine Blue (TBO). The sporangia develops basipetally, a condition that allows observation of all the developmental stages taking place throughout the caulinar axis of adult plants. Each sporangium originates from a group of epidermal cells, axilar to the microphylls. These cells undergo active mitosis, and produce new external and internal cellular groups. The sporangium wall and the tapetum originate from the external group of cells, while the internal cellular group leads to the sporogenous tissue. Meiosis occur in the sporocytes and produce simultaneous types tetrads, each one giving rise four trilete spores, with foveolate ornamentation. During the sporangium ripening, the outermost layer of the wall develops anticlinally, and inner periclinal thickenings and the innermost one perform as a secretory tapetum, which persists until the spores are completely mature. All other cellular layers colapse. PMID:20073340

Barón, Edgar Javier Rincón; Landazábal, Leidy Vivivana Gélvez; Ballesteros, Helkin Giovany Forero; Prieto, Dagoberto Arrieta; Hleap, José Sergio

2009-12-01

168

Ancient DNA, climatic change, and loss of genetic diversity in an endemic Patagonian mammal  

NASA Astrophysics Data System (ADS)

Understanding the response of animal populations to climatic change is essential for the future maintenance of biodiversity. One question that remains difficult to answer, and is particularly important to conservation, is how animals respond over time scales relevant to evolutionary change. Ancient DNA provides a unique opportunity to track animal response to Holocene climate change and to study species replacement patterns and genetic diversity over time. We used ancient DNA to compare response to climatic change in two species, C. sociabilis and C. haigi, over the last 8,000 years. Our study site, Cueva Traful, is a late-Holocene raptor roost in Parque Nacional Nahuel Huapi, Argentina. A lack of genetic diversity in modern C. sociabilis populations is indicative of past bottleneck events and a previous ancient DNA study found that it had remained genetically identical for at least 1000 years in the face of climatic change and human disturbance. Since Cueva Traful goes back further in time, our first goal was to examine genetic diversity in order to place a longer term historical perspective on the modern bottleneck. The second goal was to compare changes in genetic diversity in C. sociabilis to C. haigi a closely related species that may respond differently to climatic change. The use of ancient DNA presents unique challenges due to low copy number, environmental damage to template, and high contamination risk. Despite these challenges, ancient DNA provides a unique perspective on evolutionary history.

Chan, Y.; Lacey, E.; Ramakrishnan, U.; Pearson, O.; Hadly, E.

2004-12-01

169

Missouri Botanical Garden-Research: Flora of the Páramo of El Cajas, Azuay, Ecuador  

NSDL National Science Digital Library

Available in Spanish and English, the Flora of the Páramo of El Cajas, Azuay, Ecuador is a collaborative creation developed by the ETAPA-Parque Nacional Cajas, Department of Systematic Botany at Aarhus University, and the Missouri Botanical Garden. The project's purpose "was to explore the páramo of Cajas, to take high quality digital photographs, and to produce an illustrated flora of the vascular plants available through the internet." The site contains images and descriptions for 100 representative species with the primary goal of increasing appreciation, knowledge, and protection of these wild and native plants. The species are organized alphabetically by family, and each listing includes the following: photograph, scientific name, family, brief description, and distribution. Site visitors can also link from each listing to the TROPICOS database for additional species and specimen information. The site is designed to be user-friendly for a wide public and includes a glossary for easy interpretation of technical terms. The site also includes the Checklist of the Flora of the Páramo of Cajas, Ecuador.

170

Dinámica de la mineralización de N, P, y K en hojas de Schinopsis balansae Engl. sobre un suelo forestal del Parque Chaqueño Húmedo N, P, y K dynamics in mineralitation Schinopsis balansae Engl. leaves on forest soil of the Humid  

Microsoft Academic Search

El objetivo del trabajo fue determinar las cantidades totales y ritmos de liberación de N, P y K al suelo, producidos por la descomposición de las hojas de Quebracho colorado chaqueño (Schinopsis balansae Engl.), sobre un suelo forestal de la Estación Forestal de General Obligado del INTA de Colonia Benítez, Chaco, Argentina. Para su estudio se usó el método de

Parque Chaqueño; J. Prause; A. P. de Lifschitz; D. M. Toledo

2003-01-01

171

CONTAMINACIÓN DE SUELOS CON HUEVOS DE Toxocara spp. (NEMATODA, ASCARIDIDA) EN PARQUES PÚBLICOS DE LA CIUDAD DE CORO, ESTADO FALCÓN, VENEZUELA. Soil Contamination With Toxocara spp. Eggs (Nematoda, Ascaridida) in Public Parks From Coro City, Falcon State, Venezuela  

Microsoft Academic Search

A descriptive and transversal survey to establish contamination with Toxocara spp. eggs of soils from 38 public parks of the city of Coro, Falcon State, Venezuela, was carried out between February-March 2004. The soil samples were parasitologically processed using the technique of flotation with NaCl (modified Willis-Molloy). Texture, salinity (electric conductivity) and pH of the soils were also analyzed. Toxocara

Dalmiro José Cazorla Perfetti; Pedro Morales Moreno; María Eugenia; Acosta Quintero

172

Late Pleistocene deglaciation chronology in the NW of the Iberian Peninsula using cosmic-ray produced 21Ne in quartz  

Microsoft Academic Search

Late Pleistocene glaciations in the NW Iberian Peninsula over Serra de Queixa and Serra de Xurés, all with granite substrata, were studied by mass spectrometry using cosmogenic 21Ne. Rock cores were drilled in glacial polished surfaces and push-moraine boulders, and were analyzed to determine their integral exposure time to cosmic rays. First results, which are consistent with the relative geomorphologic

D. Fernandez Mosquera; K. Marti; J. R. Vidal Romani; A. Weigel

2000-01-01

173

Thermochronology of the South American platform in the state of São Paulo, Brazil, through apatite fission tracks  

Microsoft Academic Search

The fission-track method (FTM) in apatite was applied to 45 samples collected in the Serra da Mantiqueira (Mantiqueira mountain range), the Serra do Mar (Mar mountain range), regions next to these mountain ranges and the coastal region between Ubatuba and Santos in the State of São Paulo, Brazil, to study the thermochronology of the South American Platform in southeast Brazil

C. A. Tello Saenz; J. C. Hadler Neto; P. J. Iunes; S. Guedes; P. C. Hackspacher; L. F. B. Ribeiro; S. R. Paulo; A. M. Osorio A

2005-01-01

174

Relevant principal component analysis applied to the characterisation of Portuguese heather honey.  

PubMed

The main purpose of this study was the characterisation of 'Serra da Lousã' heather honey by using novel statistical methodology, relevant principal component analysis, in order to assess the correlations between production year, locality and composition. Herein, we also report its chemical composition in terms of sugars, glycerol and ethanol, and physicochemical parameters. Sugars profiles from 'Serra da Lousã' heather and 'Terra Quente de Trás-os-Montes' lavender honeys were compared and allowed the discrimination: 'Serra da Lousã' honeys do not contain sucrose, generally exhibit lower contents of turanose, trehalose and maltose and higher contents of fructose and glucose. Different localities from 'Serra da Lousã' provided groups of samples with high and low glycerol contents. Glycerol and ethanol contents were revealed to be independent of the sugars profiles. These data and statistical models can be very useful in the comparison and detection of adulterations during the quality control analysis of 'Serra da Lousã' honey. PMID:19023820

Martins, Rui C; Lopes, Victor V; Valentão, Patrícia; Carvalho, João C M F; Isabel, Paulo; Amaral, Maria T; Batista, Maria T; Andrade, Paula B; Silva, Branca M

2008-01-01

175

Cambios del EEG por habituación y condicionamiento en niños de tres a 15 años que acuden al Instituto Nacional de Rehabilitación (INR)  

Microsoft Academic Search

SUMMARY During waking, stimuli activate the sensory pathways giving rise to sensation and the response to such stimulation. The electrobiochemical changes and modifications in EEG rhythms event- related synchronization or event-related desynchronization, ERD or ERS) propagated in the specific and unspecific cortex are added to the changes elicited by the responses and to the new signals originated by those same

Héctor Brust-Carmona; Francisco Ramírez-Aboytes; José Martínez; Ángel Rodríguez Miguel; Blanca Flores-Ávalos; Oscar Yáñez-Suárez

2009-01-01

176

Politica Nacional sobre Discapacidad: Un Informe del Progreso, Diciembre 2000-Diciembre 2001 (National Disability Policy: A Progress Report, December 2000-December 2001).  

ERIC Educational Resources Information Center

This report (written in Spanish) of the National Council on Disability (NCD) describes the nation's progress in advancing public policies to increase the inclusion, empowerment, and independence of people with disabilities in light of the Americans with Disabilities Act of 1990. The report covers December 2000 through December 2001. It reviews…

National Council on Disability, Washington, DC.

177

Politica Nacional sobre Discapacidad: Un Informe del Progreso, Diciembre 2000-Diciembre 2001 (National Disability Policy: A Progress Report, December 2000-December 2001).  

ERIC Educational Resources Information Center

|This report (written in Spanish) of the National Council on Disability (NCD) describes the nation's progress in advancing public policies to increase the inclusion, empowerment, and independence of people with disabilities in light of the Americans with Disabilities Act of 1990. The report covers December 2000 through December 2001. It reviews…

National Council on Disability, Washington, DC.

178

Weak magnetism in two neutrino double beta decay 1 Work partially supported by the CONICET from Argentina and the Universidad Nacional de La Plata. 1  

Microsoft Academic Search

We have extended the formalism for the two-neutrino double beta decay by including the weak-magnetism term, as well as other second-forbidden corrections. The weak magnetism diminishes the calculated half-lives in ?10%, independently of the nuclear structure. Numerical computations were performed within the pn-QRPA, for 76Ge, 82Se, 100Mo, 128Te and 130Te nuclei. Not one of the second-forbidden corrections modifies significantly the

C. Barbero; F. Krmpotic; A. Mariano; D. Tadic

1999-01-01

179

Iniciativa de ley federal del patrimonio cultural de la nacion (Draft of Federal Law for the Cultural Heritage of the Nation).  

ERIC Educational Resources Information Center

|This document is an English-language abstract (approximately 1,500 words) of the draft of a law for the preservation of Mexican national heritage, particularly for the protection, conservation, and recuperation of cultural objects. The document consists of twelve chapters and six articles. Chapter 1 declares the protection, conservation,…

Mexico.

180

International Symposium on Equatorial Aeronomy, 8th, Universidad Nacional de Tucuman, San Miguel de Tucuman, Argentina, Mar. 21-27, 1990, Conference Digest  

NASA Astrophysics Data System (ADS)

Recent theoretical and observational studies of the upper atmosphere in the tropics are discussed in reviews and reports. Topics examined include incoherent scatter at the Jicamarca Radio Observatory, ionospheric drift measurements with digisondes, the role of the equatorial E region in the evening ionosphere, and electrojet and counter-electrojet effects observed by Magsat. Consideration is given to H-component analysis for annual and semiannual geomagnetic variations at La Quiaca, Pilar, and Trelew observatories; double-pulse spectral observations of a stable bottomside spread-F layer; magnetospheric disturbance effects on the equatorial ionization anomaly; the low-latitude F2 region maximum electron density distribution; and ionospheric and geomagnetic-field effects of the solar eclipse of March 18, 1988 in SE Asia.

181

From Chaitén to the Chilean volcano monitoring network Jorge Munoz, Hugo Moreno, Servicio Nacional de Geología y Minería, Chile, jmunoz@sernageomin.cl  

Microsoft Academic Search

Chaitén volcano in southern Andes started a plinian to subplinian rhyolitic eruption on May 2008 following a long period of quiescence. A new dome complex grew up at high rates during 2008-2009 inside a 2 kilometers caldera like structure. Pyroclastic, laharic, block and ash flows and ash falls deposits have been affecting the surrounding populations, ground, vegetation, ocean and rivers,

J. Muñoz; H. Moreno

2010-01-01

182

Technical Assistance for Digital Broadcast Standards. Section 5. Elaboration of New Legal/Regulatory Framework ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

183

Technical Assistance for Digital Broadcast Standards. Section 6. Final Presentation. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

184

Technical Assistance for Digital Broadcast Standards. Section 3.2, Technical Analysis. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

185

Technical Assistance for Digital Broadcast Standards. Section 3.3, Economic Analysis. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

186

Technical Assistance for Digital Broadcast Standards. Section 3.1, Benefits of Digital Broadcasting. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

187

Technical Assistance for Digital Broadcast Standards. Section 4, Organizational Analysis. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

188

Teorías de la hermandad poético-musical en el contorno nacional: la generación argentina de 1837  

Microsoft Academic Search

Considering the processes of nation-building in Argentina during the nineteenth century as well as the consolidation of debates pertaining to the constitution of a 'national literature,' this article explores the relationship between poetry and music outlined in some works by the most important writers of the Argentine romantic Generation of 1837. Juan Thompson, Juan Bautista Alberdi, Esteban Echeverría, Domingo Faustino

Marcos Campillo Fenoll

2009-01-01

189

Valorización de los residuos sólidos en la ciudad universitaria de la Universidad Nacional Mayor de San Marcos VALORIZATION OF THE SOLID WASTES IN THE SAN MARCOS UNIVERSITY CITY  

Microsoft Academic Search

The University Campus of the San Marcos Major National University with 20 faculties and 59 vocational schools holds above 12,000 students spending an average of 6 hours per day in the University Campus. Each school has a cafeteria for students, professors and clerical staff. All these persons generate solid residues. One of the most serious environmental problems of the current

Godelia Canchari Silverio; Oswaldo Ortiz Sanchez

190

Resistencia bacteriana en cuidados intensivos y tendencia actual: Departamento de Cuidados Críticos, Servicio de Cuidados Intensivos del Hospital Nacional Guillermo Almenara Irigoyen, Essalud, Lima, Perú, 2004-2006  

Microsoft Academic Search

Introduction: This is a description and analysis of the behavior of most frequently isolated microorganisms in the Intensive Care Unit (ICU) of Gullermo Alemnara-Irigoyen Hospital in Lima. Antimicrobial susceptibility\\/resistance patterns were also analyzed. Material and method: Microorganisms were isolated and their antimicrobial susceptibility patters were assessed using a Micro Scan Walk Away 96 automatic system and Combo NUC panels for

Enrique Luis Paz Rojas; Darío Ponce de León Pandolfi; Rafael Ramírez Ponce

191

Correspondencia entre CIE10 y CIE9 para las listas de causas de muerte del Instituto Nacional de Estadística y de la Región de Murcia  

Microsoft Academic Search

Results: A decline in infectious diseases (-1.7%) and viral hepa- titis, (-12.3%) declined under Tenth revision, while AIDS showed an increase (5.7%). Neoplasms increased a little (0.3%) with the inclu- sion of the Mielodisplasic Syndrome (55.2%). Diabetes mellitus is increased (2.1%). Mental disorders declined on dementia being shif- ted to Alzheimer's disease (28.6%). Cardiovascular diseases dropped slightly (-1.4%), without any

Lluís Cirera Suárez; Miguel Rodríguez Barranco; Emilia Madrigal de Torres; Jesús Carrillo Prieto; Augusto Hasiak Santo; Roberto Augusto Becker; Aurelio Tobías Garcés; Carmen Navarro Sánchez

2006-01-01

192

Abuso de la Marihuana. Instituto Nacional Sobre el Abuso de Drogas (Marijuana Abuse and Addiction. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

The use of marijuana can produce adverse physical, mental, emotional, and behavioral changes, and contrary to popular belief it can be addictive. Marijuana smoke, like cigarette smoke, can harm the lungs. The use of marijuana can impair short-term memory,...

2005-01-01

193

Síndrome de inmunodeficiencia adquirida en niños institucionalizados en el Hospital Nacional de Mpilo (Zimbabwe) Acquired immunodeficiency syndrome in children institutionalized in Mpilo National Hospital (Zimbabwe)  

Microsoft Academic Search

A descriptive, longitudinal and prospective study of the human immunodeficiency syndrome was carried out in children institutionalized in Mpilo National Hospital in Zimbabwe from April, 2005 to March, 2006. The case material was formed by all the children up to 12 years, attended in the Opportunistic Infections Clinic belonging to this hospital and where they were previously diagnosed with the

Mariela Sosa Zamora; Jorge Ernesto Amarán Valverde; Migdia Pérez Pérez; Carmen Berenguer Gouarnaluses

194

Wearing La Camiseta Nacional: Mexican Soccer Communities in the United States and the Birth of the Tricolor Brand in the Big-Time Sports Global Landscape  

Microsoft Academic Search

This presentation analyzes the profile, evolution and transformation of Mexican soccer communities in the United States in the context of current globalization processes that are redefining national identities, recreational activities, ideals of youth and manhood, and consumer practices among people of Mexican descent in the United States. Focusing on the interactions and connections U.S. Mexican soccer communities have developed with

Juan Javier Pescador

2012-01-01

195

Heroina: Abuso y Adiccion. Instituto Nacional Sobre el Abuso de Drogas (Heroin Abuse and Addiction. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

Heroin is a highly addictive drug, and its abuse has repercussions that extend far beyond the individual user. The medical and social consequences of drug abuse HIV/AIDS, tuberculosis, fetal effects, crime, violence, and disruptions in family, workplace, ...

2005-01-01

196

VIH/SIDA. Instituto Nacional Sobre el Abuse de Drogas. (HIV/AIDS. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

Initially characterized by relatively localized outbreaks, HIV/AIDS has now become a pandemic that has literally put the world at risk, affecting diverse populations in different ways. And while all nations are affected by HIV/AIDS, each faces differing u...

2006-01-01

197

Adiccion al Tabaco. Instituto Nacional Sobre el Abuso de Drogas (Tobbaco Abuse and Addiction. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

Tobacco use kills nearly half a million Americans each year, with one in every six U.S. deaths the result of smoking. Smoking harms nearly every organ of the body, causing many diseases and compromising smokers health in general. Nicotine, a component of ...

2007-01-01

198

Abuso y Adiccion a la Metanfetamina. Instituto Nacional Sobre el Abuse de Drogas. (Methamphetamine Abuse and Addiction. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

The abuse of methamphetamine a potent and highly addictive psychostimulant is a very serious problem in the United States. Methamphetamine abuse leads to devastating medical, psychological, and social consequences. Adverse health effects include memory lo...

2007-01-01

199

Abuso de la MDMA (Extasis). Instituto Nacional Sobre el Abuso de Drogas (MDMA (Ecstasy) Abuse. National Institute on Drug Abuse Research Report Series).  

National Technical Information Service (NTIS)

The so-called club drug MDMA continues to be used by millions of Americans across the country, despite evidence of its potential harmful effects. 3,4-methylenedioxymethamphetamine (MDMA, or ecstasy) has gained a deceptive reputation as a safe drug among i...

2006-01-01

200

High Performance School Buildings in Portugal: A Life Cycle Perspective  

ERIC Educational Resources Information Center

|In 2007 the Portuguese government launched a major school modernisation programme, and has taken steps to ensure the long-term sustainability of facilities. A specially created state-owned company, Parque Escolar (PE) has already completed 104 schools; 70 are work-in-progress and an additional 39 are under design or tender. Parque Escolar is…

Jorge, Graca Fonseca; da Costa, Marta Marques

2011-01-01

201

Ideas de la Comunidad para Mejorar la Respuesta a la Epidemia Nacional del VIH: Informe Sobre el Dialogo Nacional Acerca del VIH/SIDA (Community Ideas for Improving the Response to the Domestic HIV Epidemic: A Report on a National Dialogue on HIV/AIDS).  

National Technical Information Service (NTIS)

From the beginning, ONAP recognized that community involvement was essential in creating a more effective strategy for combating HIV/AIDS in America. To achieve this undertaking, ONAP developed a comprehensive approach for gathering public input and ensur...

2010-01-01

202

2. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF FOUNTAIN, SMITHY AND SOAP FACTORY (LOOKING EAST) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

203

8. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

8. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY FROM EAST CORNER. - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

204

7. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

7. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY (S. W. Side) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

205

5. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

5. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SMITHY AND SOAP FACTORY (LOOKING SOUTH) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

206

4. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SMITHY FROM SO. WEST CORNER. - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

207

75 FR 12731 - Foreign-Trade Zone 50-Long Beach, CA; Site Renumbering Notice  

Federal Register 2010, 2011, 2012, 2013

...Junipero Serra Streets, San Gabriel. For further information, contact Christopher Kemp at Christopher.Kemp@trade.gov or (202) 482-0862. Dated: March 5, 2010. Andrew McGilvray, Executive Secretary. [FR Doc. 2010-5828 Filed...

2010-03-17

208

77 FR 33561 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978  

Federal Register 2010, 2011, 2012, 2013

...Luz Elena, c/o PARQUE INDUSTRIAL PROGRESO S.A., Yumbo, Colombia; c/o GEOPLASTICOS S.A., Cali, Colombia; DOB 14 Mar 1966; POB Cali, Valle, Colombia; Cedula No. 31940893 (Colombia); Passport 31940893 (Colombia)...

2012-06-06

209

Comportamiento del cáncer de vulva durante 16 años en el Instituto Nacional de Cancerología (Colombia) Behavior of Vulvar Cancer over a 16-year Period at the National Cancer Institute (Colombia)  

Microsoft Academic Search

Objective: To describe patient mortality among patients with vulvar cancer at the National Cancer Institute of Colombia (INC). Materials and Methods: Retrospective cohort study among vulvar cancer patients at the INC from 1990-2006. Survival estimated by Kaplan-Meyer; comparison with logarithmic trial rankings. Results: 303 patients were diagnosed with vulvar cancer, including. One hundred and ninety cases fulfilled inclusion criteria. Average

Mónica Medina; Ricardo Sánchez; Natascha Ortíz; Alexánder Rodríguez; Simón Oróstegui

210

Alcoholism and the Hispanic: A Mutual Concern = El Alcoholismo y Los Hispanos Una Preocupacion Nacional. Proceedings of the National Hispanic Conference on Alcoholism (San Antonio, Texas, September 7-10, 1981).  

ERIC Educational Resources Information Center

Written in Spanish and English, the proceedings include 6 papers and the recommendations presented at the conference on alcoholism and alcohol-related problems among Hispanics attended by approximately 400 participants, representing 29 states, Puerto Rico, and Mexico. "The Challenge of the 1980's: Action Through Unity" discusses the need for unity…

AVANTE International Systems Corp., San Antonio, TX.

211

GEOGENIC ARSENIC IN SHALLOW AQUIFERS OF RÍO DULCE ALLUVIAL CONE SANTIAGO DEL ESTERO PROVINCE, NW ARGENTINA J. BUNDSCHUH, Ph. D. Instituto Costarricense de Electricidad (ICE), Associate to Universidad Nacional de Santiago del Estero (UNSE)  

Microsoft Academic Search

Geogenic arsenic (As) is reported in groundwaters from the shallow aquifers in different parts of the Chaco-Pampean Plain, Argentina. Río Dulce alluvial cone in Santiago del Estero Province (NW Argentina) was selected as an area to investigate the complex hydrological and geochemical conditions that control the distribution and mobilization of As in groundwater from these shallow alluvial aquifers. Average total

Apartado Postal; P. BHATTACHARYA; D. M. CLAESSON; J. FAGERBERG

212

Technical Assistance for Digital Broadcast Standards. Section 3.4, Development of Feasible Options and Preferred Alternatives. ANSP, Autoridad Nacional De Los Servicios Publicos Panama, Panama. Final Report (Revised).  

National Technical Information Service (NTIS)

Strategic Policy Research Inc. was selected to provide technical assistance to the telecommunications and broadcast regulator (ANSP) of the Republica de Panama in developing policies for managing the transition of broadcasting from the current analog syst...

2006-01-01

213

El Odio Se Cura: Un Programa Nacional para la Prevencion de los Crimenes de Odio para las Escuelas Intermedias (Healing the Hate: A National Crime Prevention Curriculum for Middle Schools).  

ERIC Educational Resources Information Center

|Designed for use in middle schools and youth organizations, this curriculum, in Spanish, deals with the extent of hate crime in the United States and presents strategies for reducing hate crimes among our youth. This flexible nine-unit curriculum is based on the principles that violence and prejudice are learned and therefore preventable, and…

McLaughlin, Karen A.; Brilliant, Kelly J.

214

Historical somersaults.  

PubMed

The author and his youngest sister attended a mass at the Mission San Diego in California where the Monsignor discussed the life of Father Serra who founded the Mission in 1769. A letter to Father Serra from another priest showed the priest's distress over an abortion done to an Indian woman living at the Mission. Recollecting this historical letter was used to express the Monsignor's views on abortion today. He then reminded the congregation of the upcoming presidential election. He claimed that either Indians or people claiming to be Indians are trying to prevent the canonization of Father Serra without explaining why these people objected. He argued that the secular world cannot judge this man by contemporary standards. Yet, he had earlier implored the congregants to make secular political choices based on the absolute standards of the church. The objections to Father Serra by various secular people where he had been a member of the Spanish Inquisition and the missions he established served as forced confinement for the Indians. Supposedly, Father Serra and other priests kept Indian women in the missions to protect them from the brutality of Spanish soldiers. In fact, the pregnant Indian mentioned in the Monsignor's sermon was most likely raped by a Spaniard. Women in the missions were forced to stay in the missions while men could at least go to the fields. Unsanitary conditions were very unhealthy for the women, leading to considerable mortality. The child mortality rate was higher than 20%. Women who tried to control their fertility were harshly punished. The Catholic Church would do better if it canonized Father de las Casas who defended the autonomy and intellectual credibility of Indian culture. The author concludes that it is indeed unfair to judge Father Serra by contemporary standards, just as it is unfair and unreasonable to force Catholic standards on others. PMID:12178853

Ryan, R

215

Comment on ``Nature of the Collapse Transition for Polymers''  

NASA Astrophysics Data System (ADS)

A Comment on the Letter by

Jurgen F. Stilck, Kleber D. Machado, and Pablo Serra, Phys. Rev. Lett.PRLTAO0031-9007 76, 2734 (1996).
The authors of the Letter offer a Reply.

Pretti, Marco

2002-09-01

216

I SUBSTRATI E LA COLTIVAZIONE DELLE PIANTE IN CONTENITORE  

Microsoft Academic Search

Riassunto Negli ultimi anni, il settore dell'ortoflorovivaismo, sia di serra che di piena aria, si è orientato verso lo sviluppo di tecnologie di coltivazione in grado di combinare l'efficienza produttiva con la sostenibilità ambientale. Tra queste, un ruolo importante è senza dubbio svolto dalle coltivazioni fuori suolo (o idroponica), e tra di esse soprattutto la coltivazione in contenitore. Uno dei

Alberto Pardossi; Luca Incrocci; Paolo Marzialetti; Carlo Bibbiani

2009-01-01

217

Valutazione tecnico-economica delle potenzialità di riutilizzo irriguo dei reflui depurati: il caso della Valpadana  

Microsoft Academic Search

Gli effetti dei cambiamenti climatici (CC), sebbene soltanto vagamente ipotizzati qualche decennio fa, hanno cominciato a manifestarsi negli ultimi anni facendo emergere la vulnerabilità soprattutto del settore agricolo. Mentre le indicazioni politiche internazionali promuovono azioni congiunte di lungo periodo volte all’adozione di misure di mitigazione dei CC (riduzione dei gas serra), non sono ancora state chiaramente definite efficaci misure di

Raffaella Zucaro; C. Rago; Michele Vollaro

2012-01-01

218

Transition from marine to hypersaline conditions in the Messinian Tripoli Formation from the marginal areas of the central Sicilian Basin  

Microsoft Academic Search

Three sections of the early Messinian Tripoli Formation from the northern and southern margins of the central Sicilian Basin (Serra Pirciata, Torrente Vaccarizzo, and Marianopoli) have been studied with the aim to reconstruct the sedimentary and environmental changes which occurred during the transition between marine conditions and the evaporitic events of the Salinity Crisis recorded in the overlying Calcare di

A. Bellanca; A Caruso; G Ferruzza; R Neri; J. M Rouchy; M Sprovieri; M. M Blanc-Valleron

2001-01-01

219

Description of the male Hymenoepimecis japi Sobczak et al. 2009 (Hymenoptera, Ichneumonidae) parasitoid of Leucauge roseosignata Mello-Leitão 1943 (Araneae: Tetragnathidae).  

PubMed

The male of Hymenoepimecis japi (Hymenoptera, Ichneumonidae, Pimplinae) is described and illustrated. The specimen was collected in a modified web (cocoon web) of Leucauge roseosignata (Araneae, Tetragnathidae) made in a laboratory. Both, host and parasitoid were collected in Reserva Biológica Serra do Japi, located in Jundiaí, São Paulo, Brazil. PMID:23295526

Sobczak, J F

2012-11-01

220

EGG BROCHOSOMES OF PROCONIINI (HEMIPTERA: CICADELLIDAE, CICADELLINAE) SPECIES ASSOCIATED WITH CULTIVATION OF GRAPEVINES  

Microsoft Academic Search

Brochosomes production is considered a feature of Cicadellidae, and may represent an outstanding innovation which has played an important role in the development and diversification of this insect group. The objective of this study was to identify the species of Proconiini that produced egg brochosomes associated with grapevines in the Serra Gaúcha region of Brazil. Egg brochosome characteristics and an

Wilson Sampaio de Azevedo; Marcos Botton; Andressa Paladini; Gervásio Silva

221

Trioecy in Coccoloba cereifera Schwacke (Polygonaceae), a narrow endemic and threatened tropical species  

Microsoft Academic Search

Trioecy, the co-occurrence of the males, females, a nd hermaphrodite morphs in natural populations, is a rare and poorly studied breeding system. It is expressed in Coccoloba cereifera , an endemic, and endangered species from the rupestrian fields of Serra do Cipó, southeastern Br azil. Male individuals produce staminate flowers bu t no fruits. Female individuals produce pistillate flowers and

Celice Alexandre Silva; Marco Antonio Oliva; Milene Faria Vieira; Geraldo Wilson Fernandes

2008-01-01

222

6. Historic American Buildings Survey Photographed by Henry F. Withey ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

6. Historic American Buildings Survey Photographed by Henry F. Withey April 1937 RUINS OF SOAP FACTORY & SMITHY (FROM S. E. END OF SOAP FACTORY) - Mission San Gabriel Arcangel, Industrial Shop (Ruins), West Mission Drive & Junipero Serra Street, San Gabriel, Los Angeles County, CA

223

Genotoxicity and composition of particulate matter from biomass burning in the eastern Brazilian Amazon region  

Microsoft Academic Search

In the present study Tradescantia pallida micronucleus (Trad-MCN) bioassay was used to assess the genotoxicity of particulate matter with a mass median aerodynamic diameter less than 10?m (PM10) in Tangara da Serra (MT), a Brazilian Amazon region that suffers the impact of biomass burning. The levels of PM (coarse and fine size fractions) and black carbon (BC) collected were also

Nilmara de Oliveira Alves; Ana Lúcia Matos Loureiro; Fernando Cavalcante dos Santos; Kátia Halter Nascimento; Rivanildo Dallacort; Pérola de Castro Vasconcellos; Sandra de Souza Hacon; Paulo Artaxo; Silvia Regina Batistuzzo de Medeiros

2011-01-01

224

Column tests of a compacted mixture of tropical soils for use in liners in Brazil  

Microsoft Academic Search

Transport and attenuation parameters for K + , Cl - and Cu 2+ obtained from column tests on a mixture of two compacted tropical soils found in the southern, mid-western and southeastern parts of Brazil are presented. The soils studied were derived from the sandstones of the Botucatu Formation (J-K) and the basaltic rocks of the Serra Geral Formation (J-K)

JULIANA BROGGIO BASSO

2006-01-01

225

Radio quite site qualification for the Brasilian Southern Space Observatory by monitoring the low frequency 10-240 MHz Eletromagnetic Spectrum  

Microsoft Academic Search

The monitoring of the level of the radio interference in the Site of the Brazilian Southern Space Observatory - SSO\\/CRS\\/CIE\\/INPE - MCT, (29S, 53W), São Martinho da Serra, RS, in south a of Brazil, aims to gather spectral data for the Observatory's Site qualification as a radio quite site for installation of Radio Astronomy instrumentation, free of radio noise. The

Guilherme Simon da Rosa; Nelson Jorge Schuch; Cassio Espindola Antunes; Natanael Gomes

2008-01-01

226

Soil aggregate stability under different Mediterranean vegetation types  

Microsoft Academic Search

The influence of vegetation type on soil erodibility was studied by means of aggregate stability measurements using the Modified Emerson Water Dispersion Test (MEWDT), water-drop impacts (CND and TDI) and Ultrasonic Disruption (UD) methods on soils from north-facing slopes of the mountain range of La Serra Grossa in the eastern Iberian Peninsula. Soils with similar characteristics but covered by the

A. Cerda

1998-01-01

227

Seedling growth of the invader Calotropis procera in ironstone rupestrian fi eld and seasonally dry forest soils Crescimento de plântulas da espécie invasora Calotropis procera em solos de campos rupestres ferruginosos e fl oresta seca sazonal  

Microsoft Academic Search

The present study evaluated the growth, biomass allocation and nutrient content in seedlings of the invasive and exotic especies Calotropis procera (Aiton) W.T. Aiton (Apocynaceae), cultured in greenhouse, in soils from two different ecosystems: ironstone rupestrian fi elds (Canga) of Brumadinho, Minas Gerais; and seasonally dry forest (Caatinga), of Serra Talhada, Pernambuco. Seedlings from the Canga treatment were signifi cantly

Silvia H. F. de Oliveira; Daniel Negreiros; G. Wilson Fernandes; Newton P. U. Barbosa

228

Ecological Studies on Amapari Virus.  

National Technical Information Service (NTIS)

(1) Amapari virus has been isolated from only two of the many species of rodents and other vertebrates studied at Serra do Navio, Amapa, Brazil. These are Oryzomys capito goeldii and Neacomys guianae. The isolation rate for each species over 4 years was c...

F. P. Pinheiro J. P. Woodall

1969-01-01

229

The distribution of genetic variability in Baccharis concinna (Asteraceae), an endemic, dioecious and threatened shrub of rupestrian fields of Brazil  

Microsoft Academic Search

Distribution of genetic variability may becorrelated with life history traits, such asreproductive system, pollination, seeddispersal mode, geographical distribution, andlocal abundance. We used RAPD markers to studythe distribution of genetic variability of sixpopulations of Baccharis concinna(Asteraceae), a rare, dioecious and threatenedshrub, endemic to Serra do Cipó,southeastern Brazil, along an altitudinalgradient, ranging from 950 to 1300 m above sealevel. From 113 RAPD

Vânia Gomes; Rosane G. Collevatti; Fernando A. O. Silveira; G. Wilson Fernandes

2004-01-01

230

Facies analysis of tertiary alluvial fan deposits in the Jundiaí region, São Paulo, southeastern Brazil  

Microsoft Academic Search

This article presents an analysis of facies of sedimentary sequences that occur as discontinuous bodies in the Jundiaí region, west of the main Tertiary continental basins of the southeastern Brazil continental rift. Nine identified sedimentary facies, grouped into four associations, suggest the existence of an ancient alluvial fan system whose source area was the Japi mountain range (Serra do Japi).

M. A. Neves; N. Morales; A. R. Saad

2005-01-01

231

Proceedings of the National Forum of the Association of Independent Liberal Arts Colleges for Teacher Education (3rd, Indianapolis, Indiana, June 2-4, 1989).  

ERIC Educational Resources Information Center

|The 13 papers contained in this document represent a selection of presentations from a national forum on teacher education which addressed empowerment and professionalization of teachers. The papers are: (1) "Imagining Preservice Teachers" (Alison Brennan, M. Serra Goethals, Rose Howard); (2) "Corsini 4R Schools Empower Teachers" (Paul Clark);…

Carbone, Michael, Ed.

232

APLICAÇÃO DE GEOPROCESSAMENTO NO ESTUDO DE CORRELAÇÃO ENTRE A DINÂMICA DA COBERTURA VEGETAL E A EVAPOTRANSPIRAÇÃO  

Microsoft Academic Search

RESUMO --- Para tentar avaliar o impacto das modificações na cobertura vegetal de uma bacia nos processos hidrológicos, no trabalho aqui apresentado adotou-se como objeto de estudo um trecho, com área de drenagem de 109 km2, da sub-bacia do ribeirão Serra Azul - Minas Gerais. As variações no comportamento hidrológico foram representadas pela evapotranspiração: componente do ciclo hidrológico considerada mais

Betânia Vilas Boas Neves; Paulo César; Horta Rodrigues; Bruno Rabelo Versiani

233

Análisedaevoluçãodasuscetibilidadeamovimentos ?demassanomunicípiodeParaty, RJ,?baseadaemdadosdesensoriamentoremoto?óptico ?multitemporaledadosdecampo  

Microsoft Academic Search

The process of clearing the dense forests in Serra do Mar escarps in the Paraty region can add more instability to the natural landslides susceptibility of the municipality. Aiming to provide instruments and alert the government, is presented here an evolution of Landslides Susceptibility Maps of the years 1973, 1986, 1993 and 2008. The methodology used was based on the

Teodoro Isnard; Ribeiro de Almeida; Alessandra Cristina Corsi; Agostinho Tadashi Ogura

234

Nest architecture and distribution of the primitive stingless bee, Mourella caerulea (hymenoptera, apidae, meliponinae): Evidence for the origin of plebeia (s. lat.) on the gondwana continent  

Microsoft Academic Search

The stingless bee Mourella caerulea is distributed in the subtropical parts of Brazil, Argentina and Paraguai. In the Serra do Sudeste of Rio Grande do Sul, on the southern part of the Brazilian shield, this species is one of the most abundant meliponine bees. Nests of M. caerulea are built in the soil and exhibit architectural characters typical to all

Joao M. F. Camargo; Dieter Wittmann

1989-01-01

235

Estimating trade balance for a small region: Beira–Estrela, Portugal  

Microsoft Academic Search

This paper estimates the trade balance for a small region located in inland Portugal – Beira Estrela – geographically defined as the merge of 3 official NUT III regions – Beira Interior Norte, Serra da Estrela and Cova da Beira. This estimate disaggregates by 31 commodities and includes four essential parts: first, the international trade of goods and services; second,

Pedro N. Ramos; Pedro G. Carvalho; Ana Lúcia Sargento

2004-01-01

236

Linking Community Communication to Conservation of the Maned Wolf in Central Brazil  

ERIC Educational Resources Information Center

|This article describes the environmental education (EE) program developed in the neighboring community of Serra da Canastra National Park based on a research project focused on the maned wolf conservation. The article assesses three tools used to foster the community's participation in discussing local issues: (1) communal production of a book…

Bizerril, Marcelo Ximenes A.; Soares, Carla Cruz; Santos, Jean Pierre

2011-01-01

237

Magnetic Studies of coastal Early-Late Cretaceous mafic dike swarms from São Paulo State (Brazil): Preliminary Results  

Microsoft Academic Search

The Mesozoic magmatism in Southern Brazil is represented mainly by the basaltic flows of the Serra Geral Formation, the dikes swarms from the Ponta Grossa Arch, Florianópolis, along the coast between São Paulo and Rio de Janeiro, and several alkaline complexes that lie along tectonic features associated with the evolution of the Paraná Basin. The emplacement of the dike swarms

M. B. Raposo; G. K. Malo

2007-01-01

238

Acquisition des competences discursives dans un contexte plurilingue (Acquisition of Discourse Competencies in a Multilingual Context).  

ERIC Educational Resources Information Center

|This collection of articles on second language learning in a multilingual environment includes: "Franzosisch-Deutsch: Zweisprachiges Lernen au der Sekundarstufe 1" (French-German: Learning Two Languages at Secondary School, Level 1) (Otto Stern, Brigit Eriksson, Christine Le Pape, Hans Reutener, Cecilia Serra Oesch); "Das Projekt…

Berthoud, Anne-Claude, Ed.

1996-01-01

239

Sluguilla Lawash, an open air site with Rock Art in the Western Sahara  

Microsoft Academic Search

The University of Girona (UdG) has collaborated and is collaborating with The Min- istry of Culture of the government of the Democratic Republic of Arabian Sahara (RASD) on various projects in the Western Sahara since 1995. The result of one of those projects was the creation of The National Museum of the Saharan People (Serra et al., 1997). At pre-

NARCÍS SOLER MASFERRER; JORDI UNGÉ PLAJA; JOAN ESCOLÀ PUJOL; CARLES SERRA SALAMÉ

240

Portugal's Secondary School Modernisation Programme  

ERIC Educational Resources Information Center

|The aim of the Secondary School Modernisation Programme, being implemented in Portugal by "Parque Escolar, EPE", is based on the pursuit of quality and makes Portuguese education a potential international benchmark. This paper discusses the strategies adopted to reorganise school spaces. It describes the conceptual model and highlights the…

Heitor, Teresa V.; Freire da Silva, Jose M. R.

2009-01-01

241

Pequenos mamíferos e a predação de ninhos artificiais no Museu de Biologia Prof. Mello Leitão (ES)  

Microsoft Academic Search

Resumo O principal objetivo deste estudo foi identificar as espécies de pequenos mamíferos que ocorrem no parque do Museu de Biologia Prof. Mello Leitão e determinar a taxa de predação de ovos em ninhos artificiais. As coletas foram realizadas de outubro de 2002 a abril de 2003, utilizando armadilhas de arame galvanizado grandes. Para estimar a predação de ovos, foram

Isis G Barbini; Marcelo Passamani

242

SÍTIOS DE NIDIFICAÇÃO DE TUIUIÚ Jabiru mycteria (AVES: CICONIIDAE) NO PANTANAL DE POCONÉ, MATO GROSSO  

Microsoft Academic Search

RESUMO: Foram estudados 120 ninhos de tuiuiú (Jabiru mycteria), durante três estações reprodutivas consecutivas de 1995 a 1977, na Estrada-Parque Transpantaneira e fazendas limítrofes, localizadas no Pantanal de Poconé, no Estado de Mato Grosso. Foram caracterizadas e monitoradas as árvores que serviam de suporte aos ninhos de tuiuiú, medidos a altura do ninho ao solo, o ângulo do galho com

DALCI MAURÍCIO MIRANDA DE OLIVEIRA; ROBERTO BRANDÃO

243

Fenologia da floração e biologia floral de bromeliáceas ornitófilas de uma área da Mata Atlântica do Sudeste brasileiro  

Microsoft Academic Search

Flowering phenology and floral biology of some ornitophilous Bromeliaceae of an Atlantic forest area in southeastern Brazil). This study dealt with phenology and flower visitors of some Bromeliaceae species in an Atlantic Forest area at Parque Estadual Intervales, southeastern Brazil. The taxa studied belonged to the genera Tillandsia L. (3 spp.), Vriesea Lindl. (5 spp.), Aechmea Ruiz & Pav. (3

Caio Graco Machado; João Semir

2006-01-01

244

Pilot project of biogas production from pig manure and urine mixture at ambient temperature in Ventanilla (Lima, Peru)  

Microsoft Academic Search

Parque Porcino de Ventanilla has an extension of 840ha with 2200 farmers dedicated to pig production. There is a lack of services in the area (i.e., water supply, electricity, or waste collection). Anaerobic treatment of pig manure would replace current dumping and incineration, reducing environmental pollution and hazards to public health, as well as providing an organic fertilizer and biogas.

I. Ferrer; M. Gamiz; M. Almeida; A. Ruiz

2009-01-01

245

Síndrome de Stevens-Johnson y necrólisis epidérmica tóxica por profilaxis con TARGA en el Hospital Nacional Almanzor Aguinaga Asenjo, Lambayeque,Perú Stevens Johnson syndrome and toxic epidermal necrolysis induced by HAART prophylaxis in the National Hospital Almanzor Aguinaga Asenjo, Lambayeque, Perú  

Microsoft Academic Search

RESUMEN Síndrome de Stevens-Johnson (SSJ) y necrólisis epidérmica tóxica (NET) son reacciones inflamatorias agudas originadas por hipersensibilidad (reacción inmunológica), que incluye piel y membranas mucosas. Se presenta un caso de reacción adversa medicamentosa en un paciente varón de 25 años, que recibió profilaxis con Terapia Antiretroviral de Gran Actividad. Presentó exantema, que progresa a SSJ y evoluciona a NET. Permaneció

Victor A. Soto Cáceres; Rosa E. Rodríguez Barboza

2007-01-01

246

Welfare recipients’ quality of life: lessons from the United Nations’ Human Development Index for the US welfare policy La calidad de vida de las beneficiarias del bienestar social: lecciones del Indice de Desarrollo Humano (IDH) de las Naciones Unidas para la política de bienestar social de los Estados Unidos de América  

Microsoft Academic Search

This article is part of a study on single mothers who were welfare recipients in Georgia, US (n?=?53,323) in the year 2000 which used the Human Development Index (HDI) to measure their quality of life (QOL) and that of the overall Georgia population by race. The United Nations created the HDI in 1990 to compare QOL across nations, but the

Mónica M. Alzate

2006-01-01

247

Implementacion de la tecnica de difraccion de neutrones en el Centro Nuclear del Instituto Nacional de Investigaciones Nucleares para el estudio de materiales. (Implementation of neutron diffraction technique at Nuclear Center of National Institute of Nuclear Research for study of materials).  

National Technical Information Service (NTIS)

The Neutron Diffraction technique is a helpful tool for the study of materials. The purpose was to verify that such technique works with the Neutron Diffractometer of National Institute of Nuclear Research. The scope, is to study crystalline materials by ...

L. R. Macias Betanzos

1993-01-01

248

Characterization of wines according the geographical origin by analysis of isotopes and minerals and the influence of harvest on the isotope values.  

PubMed

We studied Brazilian wines produced by microvinification from Cabernet Sauvignon and Merlot grapes, vintages 2007 and 2008, from the Serra Gaúcha, Campanha and Serra do Sudeste regions, in order to differentiate them according to geographical origin by using isotope and mineral element analyses. In addition, the influence of vintage production in isotope values was verified. Isotope analysis was performed by isotope ratio mass spectrometry (IRMS), and the determination of minerals was by flame atomic absorption (FAA). The best parameters to classify the wines in the 2008 vintage were Rb and Li. The results of the ?(13)C of wine ethanol, Rb and Li showed a significant difference between the varieties regardless of the region studied. The ?(18)O values of water and ?(13)C of ethanol showed significant differences, regardless of the variety. Discriminant analysis of isotope and minerals values allowed to classify approximately 80% of the wines from the three regions studied. PMID:23870940

Dutra, S V; Adami, L; Marcon, A R; Carnieli, G J; Roani, C A; Spinelli, F R; Leonardelli, S; Vanderlinde, R

2013-05-09

249

An audio-magnetotelluric investigation in Terceira Island (Azores)  

Microsoft Academic Search

Ten audio-magnetotelluric soundings have been carried out along a profile crossing the Serra do Cume caldera in the eastern part of the Terceira Island (Azores). The main objectives of this investigation were to detect geoelectrical features related with tectonic structures and to characterize regional hydrological and hydrothermal aspects mainly those related to geothermal fluid dynamics.Three-dimensional numerical investigation showed that the

Fernando A. Monteiro Santos; António Trota; António Soares; Rafael Luzio; Nuno Lourenço; Liliana Matos; Eugénio Almeida; João L. Gaspar; Jorge M. Miranda

2006-01-01

250

A massive infestation of sea snakes by cymothoid isopods.  

PubMed

In this study, a massive infestation of the sea snake Enhydrina schistosa by the cymothoid isopod Nerocila serra, commonly parasitizing fishes, is reported for the first time from India. This isopod was found attached on the different parts of the body of the snake. According to the month, the parasitic prevalence ranged from 30.8 to 55.3%, increasing during the monsson period. It was higher in female than in male snakes. PMID:22223034

Saravanakumar, A; Balasubramanian, T; Raja, K; Trilles, Jean-Paul

2012-01-06

251

Soils as an Important Sink for Mercury in the Amazon  

Microsoft Academic Search

This work focuses on the behaviour of mercury in lateritic soil profiles found in the Serra do Navio and Tartarugalzinhoareas of the State of Amapá in Northern Brazil. The Hg contents are high in the upper horizons of the soil profiles(100–300 µg kg-1), and decrease to less than 100 µg kg-1 at depths of 200 or 300 cm. The higher

S. M. B. de Oliveira; A. J. Melfi; A. H. Fostier; M. C. Forti; D. I. T. Fávaro; R. Boulet

2001-01-01

252

Genotoxic potential generated by biomass burning in the Brazilian Legal Amazon by Tradescantia micronucleus bioassay: a toxicity assessment study  

Microsoft Academic Search

Background  The Brazilian Amazon has suffered impacts from non-sustainable economic development, especially owing to the expansion of\\u000a agricultural commodities into forest areas. The Tangará da Serra region, located in the southern of the Legal Amazon, is characterized\\u000a by non-mechanized sugar cane production. In addition, it lies on the dispersion path of the pollution plume generated by biomass\\u000a burning. The aim of

Herbert A Sisenando; Silvia R Batistuzzo de Medeiros; Paulo HN Saldiva; Paulo Artaxo; Sandra S Hacon

2011-01-01

253

Phenology and dispersal modes of wood species in the Carrasco, a tropical deciduous shrubland in the Brazilian semiarid  

Microsoft Academic Search

We provide, for the first time, data on phenology and dispersal modes for the Carrasco, a tropical deciduous shrubland in\\u000a the Brazilian semiarid. The study was conducted in the Serra das Almas Reserve (5°8?45?S, 40°55?43?W), northeastern Brazil.\\u000a We sampled 2,790 individuals from 39 species, 30 genera, and 17 families. Fabaceae, Euphorbiaceae, and Myrtaceae were the\\u000a most representative. All species lose

Francisca Soares de Araújo; Ariadna Valentina Lopes

2010-01-01

254

Nd isotopes and the provenance of detrital sediments of the Neoproterozoic Bras??lia Belt, central Brazil  

Microsoft Academic Search

The Neoproterozoic Bras??lia Belt, in central Brazil, includes in its eastern part a thick pile of sediments deposited and deformed along the western margin of the São Francisco–Congo Craton. Several lithostratigraphic units are identified (the Ara??, Paranoá, Serra da Mesa, Araxá, Ibiá, Vazante, Canastra and Bambu?? groups) and have been traditionally interpreted as part of a passive margin association (<1.2Ga),

M. M. Pimentel; M. A. Dardenne; R. A. Fuck; M. G. Viana; S. L. Junges; D. P. Fischel; H. J. Seer; E. L. Dantas

2001-01-01

255

Low genetic diversity but local genetic differentiation in endemic Minasia (Asteraceae) species from Brazil  

Microsoft Academic Search

Espinhaço Range is a Brazilian chain of mountains, extremely rich in endemic species. Minasia has six species, all perennial herbs endemic to this range. Twenty-two populations were sampled from all Minasia species and assayed for allozyme variation. The species showed low genetic variation, compatible with the expectation for\\u000a endemics. Genetic identities in Serra do Cipó and Diamantina were high, even

Flavia F. Jesus; Aluana G. Abreu; João Semir; Vera N. Solferini

2009-01-01

256

1.94–1.93 Ga charnockitic magmatism from the central part of the Guyana Shield, Roraima, Brazil: Single-zircon evaporation data and tectonic implications  

Microsoft Academic Search

Age and origin of the charnockitic rocks of the central part of the Guyana Shield have been a matter of discussion. These rocks have been interpreted either as Transamazonian granulites metamorphosed around 2.02Ga or as 1.56Ga old igneous charnockites. Recently, most of the Roraima charnockitic rocks have been recognized as igneous rocks and included into the Serra da Prata Suite

Lêda Maria Fraga; Moacir Jose Buenano Macambira; Roberto Dall’Agnol; João Batista Sena Costa

2009-01-01

257

Detecting areas disturbed by gold mining activities through JERS-1 SAR images Roraima State Brazilian Amazon  

Microsoft Academic Search

Abstract. Three JERS-1 SAR images (1993, 1994, 1996) were evaluated for detection of areas disturbed by gold mining activities in the region of Serra Tepeque´m, Roraima State, Brazilian Amazon. Subtle tonal contrast between eroded areas and savannah grass é elds in the Tepeque´m plateau, constitutes a serious constraint on the identié cation of the disturbed areas, using SAR original images.

R. Almeida-filho; Y. E. Shimabukuro

258

Current distribution of Achatina fulica, in the state of São Paulo including records of Aelurostrongylus abstrusus (Nematoda) larvae infestation.  

PubMed

The currently known distribution range of Achatina fulica Bowdich, 1822, in the state of São Paulo, Brazil, is presented. The record of A. fulica naturally infested with Aelurostrongylus abstrusus larvae (Railliet, 1898) (Nematoda: Metastrongylidae) can be found in the city of Guaratinguetá. It was found A. fulica with Metastrongylidae larvae without known medical and veterinary importance in the cities of Carapicuíba, Embu-Guaçu, Itapevi, São Caetano do Sul, São Paulo and Taboão da Serra. PMID:21748230

Ohlweiler, Fernanda Pires; Guimarães, Marisa Cristina de Almeida; Takahashi, Fernanda Yoshika; Eduardo, Juliana Manas

259

A new genus and species of Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) from southern Brazil.  

PubMed

This paper describes a new genus and a new species of Euptychiina from open grassland habitats (campos de cima da serra) in southern Brazil. The systematic position of this new taxon is discussed based on morphological and molecular data, and it is considered sister to Taydebis Freitas. Since the campos vegetation is considered endangered due to anthropogenic activities, this butterfly species deserves attention and should be included in future conservation plans for this biome. PMID:21584405

Freitas, A V L; Mielke, O H H; Moser, A; Silva-Brandão, K L; Iserhard, C A

260

Phylogeography of Tibouchina papyrus (Pohl) Toledo (Melastomataceae), an endangered tree species from rocky savannas, suggests bidirectional expansion due to climate cooling in the Pleistocene  

PubMed Central

Many endemic species present disjunct geographical distribution; therefore, they are suitable models to test hypotheses about the ecological and evolutionary mechanisms involved in the origin of disjunct distributions in these habitats. We studied the genetic structure and phylogeography of Tibouchina papyrus (Melastomataceae), endemic to rocky savannas in Central Brazil, to test hypothesis of vicariance and dispersal in the origin of the disjunct geographical distribution. We sampled 474 individuals from the three localities where the species is reported: Serra dos Pirineus, Serra Dourada, and Serra de Natividade. Analyses were based on the polymorphisms at cpDNA and on nuclear microsatellite loci. To test for vicariance and dispersal we constructed a median-joining network and performed an analysis of molecular variance (AMOVA). We also tested population bottleneck and estimated demographic parameters and time to most recent common ancestor (TMRCA) using coalescent analyses. A remarkable differentiation among populations was found. No significant effect of population expansion was detected and coalescent analyses showed a negligible gene flow among populations and an ancient coalescence time for chloroplast genome. Our results support that the disjunct distribution of T. papyrus may represent a climatic relict. With an estimated TMRCA dated from ?836.491 ± 107.515 kyr BP (before present), we hypothesized that the disjunct distribution may be the outcome of bidirectional expansion of the geographical distribution favored by the drier and colder conditions that prevailed in much of Brazil during the Pre-Illinoian glaciation, followed by the retraction as the climate became warmer and moister.

Collevatti, Rosane Garcia; de Castro, Thais Guimaraes; de Souza Lima, Jacqueline; de Campos Telles, Mariana Pires

2012-01-01

261

Phylogeography of Tibouchina papyrus (Pohl) Toledo (Melastomataceae), an endangered tree species from rocky savannas, suggests bidirectional expansion due to climate cooling in the Pleistocene.  

PubMed

Many endemic species present disjunct geographical distribution; therefore, they are suitable models to test hypotheses about the ecological and evolutionary mechanisms involved in the origin of disjunct distributions in these habitats. We studied the genetic structure and phylogeography of Tibouchina papyrus (Melastomataceae), endemic to rocky savannas in Central Brazil, to test hypothesis of vicariance and dispersal in the origin of the disjunct geographical distribution. We sampled 474 individuals from the three localities where the species is reported: Serra dos Pirineus, Serra Dourada, and Serra de Natividade. Analyses were based on the polymorphisms at cpDNA and on nuclear microsatellite loci. To test for vicariance and dispersal we constructed a median-joining network and performed an analysis of molecular variance (AMOVA). We also tested population bottleneck and estimated demographic parameters and time to most recent common ancestor (TMRCA) using coalescent analyses. A remarkable differentiation among populations was found. No significant effect of population expansion was detected and coalescent analyses showed a negligible gene flow among populations and an ancient coalescence time for chloroplast genome. Our results support that the disjunct distribution of T. papyrus may represent a climatic relict. With an estimated TMRCA dated from ?836.491 ± 107.515 kyr BP (before present), we hypothesized that the disjunct distribution may be the outcome of bidirectional expansion of the geographical distribution favored by the drier and colder conditions that prevailed in much of Brazil during the Pre-Illinoian glaciation, followed by the retraction as the climate became warmer and moister. PMID:22837846

Collevatti, Rosane Garcia; de Castro, Thaís Guimarães; de Souza Lima, Jacqueline; de Campos Telles, Mariana Pires

2012-05-01

262

Discrimination of Different Water Layers with TerraSAR X Images in "La Albufera de Valencia"  

NASA Astrophysics Data System (ADS)

To analyze the capabilities of TerraSAR X Strip Map images in order to discriminate different water layers in the "Parque de la Albufera de Valencia", Spain, a test project was carried out. This place is a rice crop area under European and National Agro environmental regulation which obliges to preserve the habitat and to keep the rice plots flooded out of crop season, from October to January

García Fernández, M. A.; Miguelsanz Muñoz, P.

2009-04-01

263

Mesoproterozoic evolution of the Río de la Plata Craton in Uruguay: at the heart of Rodinia?  

Microsoft Academic Search

Mesoproterozoic volcanosedimentary units and tectonic events occurring in the Río de la Plata Craton (RPC) are reviewed. A\\u000a belt consisting of volcanosedimentary successions exhibiting greenschist-facies metamorphism is exposed in the eastern RPC\\u000a (Nico Pérez Terrane) in Uruguay. The Parque UTE Group consists of basic volcanics and gabbros at the base (1,492 ± 4 Ma, U–Pb\\u000a on zircon), carbonates in its middle part and

Claudio GaucherRobert; Robert Frei; Farid Chemale; Dirk Frei; Jorge Bossi; Gabriela Martínez; Leticia Chiglino; Federico Cernuschi

2011-01-01

264

Chronology of mercury enrichment factors in reef corals from western Venezuela  

Microsoft Academic Search

Mining and deforestation in the early 20th century, the development of petrochemical industries during the 1950s, and the constant weathering of natural deposits of cinabrium (HgS) have made Golfo Triste, Venezuela, a region impacted by mercury (Hg). We studied the chronology of Hg in coral skeletons of Siderastrea siderea (1 colony, 1900–1996) and Montastraea faveolata (2 colonies, 1930–1999) from Parque

Ruth Ramos; Roberto Cipriani; Hector M. Guzman; Elia García

2009-01-01

265

La presencia de China en América Latina. Un tema controvertido  

Microsoft Academic Search

El autor analiza la presencia de la República Popular China en América Latina y sus repercusiones para la seguridad nacional de los Estados Unidos en la última década. Al sostener que actualmente la RPC no amenaza los intereses vitales de Estados Unidos en su patio trasero, el autor toma en cuenta el diálogo estratégico sino-estadounidense, la seguridad nacional de la

Peter M. Lewis

2007-01-01

266

International Public Relations: An American Perspective  

Microsoft Academic Search

En un món cada vegada més interconnectat i interdependent, la internacionalització de les relacions públiques s’ha convertit en una realitat, a més a més d’una preocupació tant per a acadèmics com per a professionals que veuen com una crisi que es va iniciar en els mercats americans ràpidament va afectar tant nacions desenvolupades com nacions en vies de desenvolupament. En

Sahar Khamis; Elizabeth L. Toth

2008-01-01

267

Historical Perspective of a Union Catalog in Chile: Authorities and Periodicals Perspectiva Historica del Catalogo Colectivo en Chile: Autoridades y Publicaciones Periodicas  

Microsoft Academic Search

For almost 20 years, the National Bibliographic Network (Red Nacional de Información Bibliográfica (RENIB)) has been the driving force of library networking and resource sharing in Chile. Administratively dependent on the National Library (Biblioteca Nacional) and also physically located on its premises, RENIB has been very successful in bringing together librarians from most of the major Chilean libraries and in

Elizabeth N. Steinhagen

2002-01-01

268

COMPARISON BETWEEN INMETRO (BRAZIL) AND CENAM (MEXICO) ON BAROMETRIC PRESSURE, RANGE FROM 80 kPa UP TO 115 kPa  

Microsoft Academic Search

This paper presents the comparison between the Instituto Nacional de Metrologia, Normalização e Qualidade Industrial (INMETRO, Brazil) and the Centro Nacional de Metrología (CENAM, Mexico) on barometric pressure in the range from 80 kPa up to 115 kPa. This comparison was carried out at the end of 2004 and has been entered within the data base of the Sistema Interamericano

Jorge C. Torres-Guzmán; Pablo Olvera-Arana; Luiz H. Paraguassú; Paulo R. G. Couto

269

Trabalho e Progresso Técnico: Uma Análise nos Níveis de Emprego, Renda e Qualificação na Indústria Paulista  

Microsoft Academic Search

As relações entre o progresso técnico e o mercado de trabalho são estudadas por diversos autores atualmente tanto no cenário nacional como internacional, apresentando inusitadamente resultados ambíguos. No âmbito nacional, alguns estudos encontraramevidências de que firmas tecnologicamente mais avançadas apresentam trabalhadores melhor remunerados em decorrência da sua maior qualificação. Assim, com o objetivo de trazer evidências acerca da relação entre

Beatriz Selan; Danilo César Cascaldi Garcia; Sérgio Kannebley Júnior

2009-01-01

270

TRABALHO E PROGRESSO TÉCNICO: UMA ANÁLISE NOS NÍVEIS DE EMPREGO, RENDA E QUALIFICAÇÃO NA INDÚSTRIA PAULISTA  

Microsoft Academic Search

As relações entre o progresso técnico e o mercado de trabalho são estudadas por diversos autores atualmente tanto no cenário nacional como internacional, apresentando inusitadamente resultados ambíguos. No âmbito nacional, alguns estudos encontraram evidências de que firmas tecnologicamente mais avançadas apresentam trabalhadores melhor remunerados em decorrência da sua maior qualificação. Assim, com o objetivo de trazer evidências acerca da relação

Beatriz Selan; Danilo César Cascaldi Garcia; Sérgio Kannebley Júnior

2008-01-01

271

Comparing fixed points of the ITS90 as realized in Canada, Argentina and Brazil  

Microsoft Academic Search

A set of fixed points maintained by national metrology institutes (NMIs) for calibrating platinum resistance thermometers (PRTs) in Canada (National Research Council, NRC), Argentina (Instituto Nacional de Tecnologia Industrial, INTI) and Brazil (Instituto Nacional de Metrologia, Normalizaçãoe Qualidade Industrial, INMETRO) were compared using two methods. A set of portable cells was used in one method, and in the other a

J Ancsin; M Tischler; S G Petkovic; J F N Santiago

2001-01-01

272

New apatite fission-track data reflecting the landscape evolution using the example of the southeastern passive continental margin in Central Brazil  

NASA Astrophysics Data System (ADS)

Low-temperature thermochronolgy like AFT yield a well established tool to understand and reconstruct the rift to post-rift evolution of the passive continental margin in Brazil. The aim of the study is to quantify the temperature, exhumation, uplift, and long-term dynamic evolution of the topography of the southeastern passive continental margin in the states of Paraná and Santa Catarina (Central Brazil) along different transects. The working area shows the active evolution since the Early Cretaceous with altitudes up to 1400 m a.s.l and partly deep incised valleys. The first transect crosses the Ponta Grossa Arch with Devonian to Jurassic sediments in an NE-SW direction from the escarpment (Escarpa Devoniana) of the Serra Mantiquera in the NE to the escarpment in the SE built up of the overlying Early Cretaceous flood basalts of the Serra Urtigueira. The second transect drops down perpendicular to the coast where the eastern escarpment of the Serra Geral (up to 1400 m a.s.l) reaches nearly the coast. The highlands consist of Cretaceous flood basalts whereas the coastal lowlands constist of Precambrian metamorphic and intrusive rocks. Previous apatite fission-track data of the states of Parana and Santa Catarina provide ages between 144 (5) Ma (Gallgher et al., 1994) and 25 (1.8) Ma (Franco-Magalhaes, A.O.B., subm.) and show different post-rift reactivation from the Cretaceous to the Paleogene. But none of the studies indicate a clear relationship between age distribution and topography or age distribution and stratigraphic age. This study is based on samples taken along the transects within the working area. The results will provide new insigths into the evolution of the southeastern passive continental margin in Central Brazil concerning the thermal, exhumation, and uplift history of the Brazilian passive continental margin.

Karl, Markus; Glasmacher, Ulrich A.; Hackspacher, Peter C.; Franco-Magalhaes, Ana O. B.

2010-05-01

273

EDITORIAL: XVI Brazilian Colloquium on Orbital Dynamics  

NASA Astrophysics Data System (ADS)

The XVI Brazilian Colloquium on Orbital Dynamics was held from 26–30 November 2012, at the Biazi Grand Hotel, Serra Negra, São Paulo, Brazil. The Brazilian Colloquia on Orbital Dynamics are scientific events that occur bi-annually and are designed to develop those areas of research in celestial mechanics, orbital dynamics, planetary science, fundamental astronomy, aerospace engineering, and nonlinear systems and chaos. The meeting has been held for 30 years and it brings together researchers, professors and students from South American and also from other continents. Acknowledgements National Council for Scientific and Technological Development – CNPq Coordination for the Improvement of Higher Level – CAPES São Paulo Research Foundation - FAPESP

de Melo, Cristiano F.; Macau, Elbert E. N.; Prado, Antonio B. A.; Hetem Jnr, Annibal

2013-10-01

274

The capuchin, the howler, and the Caatinga: seed dispersal by monkeys in a threatened Brazilian forest.  

PubMed

Regeneration of the Brazilian Caatinga forest may be restricted by the naturally low diversity and density of fruit-eating animals, which has been aggravated by local faunal extinction induced by human activities. We made a preliminary evaluation of the potential seed-dispersal role of capuchin (Cebus apella libidinosus) and howler monkeys (Alouatta caraya) in Serra da Capivara National Park. The monkeys dispersed at least 26 species. Alouatta dispersed larger seeds than Cebus, and the two species apparently dispersed seeds in different local habitats. Seed dispersal by monkeys potentially makes a significant contribution to Caatinga regeneration. PMID:17146800

de A Moura, Antonio C; McConkey, Kim R

2007-02-01

275

Breakdown coefficients of high-resolution temporal rainfall  

NASA Astrophysics Data System (ADS)

Eleuch et al. [2010, SERRA 24(5), 559-565] have shown that the differences in spatial rainfall intensities scale with distance in a manner that is compatible with fractal scale invariance. On the same lines, the present work is dedicated to the study of the scale behaviour of joint statistics in high-resolution temporal rainfall. The position of the most extreme breakdown coefficients in the decomposition of temporal rainfall has been proven to determine the structure of autocorrelation in the time series of intensities [Carsteanu et al., 1999, JGR 104(D24), 31611-622], reason for which we are focusing on presenting our results in this framework.

Martínez-Novelo, Ricardo; Carsteanu, Alin Andrei

2013-04-01

276

A portable PIXE system for the in situ characterisation of black and red pigments in neolithic, copper age and bronze age pottery  

NASA Astrophysics Data System (ADS)

The results of the determination of the chromophoric elements in black and red pigments in ancient neolithic, copper age and bronze age pottery are presented. The measurements were carried out by using a recently developed portable PIXE system and Were performed at the Archaeological Museum of Licata (Sicily). The results confirm the presence of Manganese in black pigments of Castelluccio style pottery and indicate, for the first time, a strong presence of manganese in copper age pottery of the Serraferlicchio style, and in neolithic pottery of the Serra d'Alto style.

Pappalardo, L.

1999-04-01

277

Fruits of Mimosa foliolosa (Fabales: Fabaceae) as Sleeping Shelter for Megachile (Pseudocentron) botucatuna (Hymenoptera: Megachilidae).  

PubMed

Several plant parts or organs are often used by insects for aggregation and even as resting areas. We first report the use of fruits of the legume Mimosa foliolosa pachycarpa as a night shelter for Megachile (Pseudocentron) botucana Schrottky (Hymenoptera: Megachilidae) in Serra do Cipó, southeastern Brazil. Only a single bee was found per fruit, in 86 fruits out of 1,003 fruits opened. The present findings augmented the occurrence of the phenomenon among bees, which is new to the harsh mountaintop environments in the Brazilian rupestrian fields. PMID:23949678

Fernandes, G W; Ferrari, R R

2012-08-29

278

Collaborative Research and Support Program on Food Intake and Human Function: Mexico Project.  

National Technical Information Service (NTIS)

The Mexico Collaborative Research and Support Program on Nutrition and Function (Mexico CRSP) was a joint effort of researchers from the Instituto Nacional de la Nutricion Salvador Zubiran (INN), Division de Nutricion de Comunidad in Mexico City and the U...

L. H. Allen G. H. Pelto A. Chavez

1987-01-01

279

Evaluation of Refractivity Profiles from CHAMP and SCA-C GPS Radio Occultation.  

National Technical Information Service (NTIS)

The GeoForschungsZentrum's Challenging Minisatellite Payload for Geophysical Research and Application (CHAMP, Germany-US) and the Comision Nacional de Actividades Especiales' Satelite de Aplicaciones Cientificas-C (SAC-C, Argentina-US) missions are the fi...

P. Poli C. C. Ao J. Joiner M. de la Torre Juarez R. Hoff

2003-01-01

280

Cáncer de cuello del útero o uterino  

Cancer.gov

Información acerca del cáncer de cérvix (cervical o cuello uterino), lo cual incluye temas como tratamiento, prevención, causas, factores de riesgo, exámenes selectivos de detección, estudios clínicos y estadísticas del Instituto Nacional del Cáncer.

281

Prevalencia de Bocio Endemico en la Poblacion escolar de Bolivia (Prevalence of Endemic Goiter in the School Population of Bolivia).  

National Technical Information Service (NTIS)

Although goiter has been endemic in Bolivia since the days of colonization, the actual magnitude and severity of the disease has never been measured. This 1981 study by the Instituto Nacional de Alimentacion y Nutricion was conducted to statistically meas...

R. Vera G. Varela M. Feraudi V. Cossio R. Lopez

1981-01-01

282

Creep Cavitation in Nickel Aluminides: Foreign Trip Report, August 9, 1987-August 16, 1987.  

National Technical Information Service (NTIS)

Work on creep cavitation has been performed in collaboration with Professor L. Martinez of the Instituto de Fisica of the Universidad Nacional de Mexico in Cuernavaca, Mexico. A joint manuscript on ''Influencing the Shape of Creep Cavities in Nickel Alumi...

J. H. Schneibel

1987-01-01

283

Compra de medicinas recetadas a traves del Internet: Una ...  

Center for Drug Evaluation (CDER)

Text Version... En colaboración con la National Alliance for Hispanic Health (Alianza Nacional para la Salud de los Hispanos) www.hispanichealth.org 1-866-SU ... More results from www.fda.gov/downloads/drugs/resourcesforyou

284

Special CAM97 Plenary Session on the Future of Science and Technology in North America  

NASA Astrophysics Data System (ADS)

Keynote Address: "The Future of American Science and Technology" Mary Good, Assistant Secretary, United States Department of Commerce, Remarks by: Carmen Cisneros, Universidad Nacional Autonoma de Mexico Beverly Robertson, Canadian Physical Society D. Allan Bromley, The American Physical Society

Bromley, D. Allan; Good, Mary; Cisneros, Carmen; Robertson, Beverly

1997-04-01

285

Calculations on Heavy-Water Moderated and Cooled Natural Uranium Fuelled Power Reactors.  

National Technical Information Service (NTIS)

One of the codes that the Instituto Nacional de Investigaciones Nucleares (Mexico) has for the nuclear reactors design calculations is the LEOPARD code. This work studies the reliability of this code in reactors design calculations which component materia...

J. L. Pinedo V

1979-01-01

286

Sistema de adquisicion de datos para el espectrometro de resonancia paramagnetica electronica. (Data acquisition system for electronic paramagnetic resonance spectrophotometer).  

National Technical Information Service (NTIS)

In the Atomic and Molecular Physics Laboratory at the Physics Department of the Instituto Nacional de Investigaciones Nucleares (ININ), there is in operation an electronic paramagnetic resonance spectrometer (EPR). This equipment is utilized for determine...

R. Pena Eguiluz

1992-01-01

287

15 CFR Supplement No. 4 to Part 748 - Authorities Administering Import Certificate/Delivery Verification (IC/DV) and End-User Statement...  

Code of Federal Regulations, 2013 CFR

...de la Comision Nacional de Control de Exportaciones Sensitivas y Material Belico Balcarce 362âler. piso Capital FederalâCP 1064 Buenos Aires Tel. 334-0738, Fax 331-1618 IC/DV Australia Director, Strategic Trade Policy and...

2013-01-01

288

Cheralite Quartzites in Itiuba Mountains-Bahia, Brazil.  

National Technical Information Service (NTIS)

Quartzitic pebbles of anomalous radioactivity were found by the geologists of the 'Comissao Nacional de Energia Nuclear' of Brazil (CNEN) in November 1964 in the Vicinity of Santa Rosa, municipality of Jaguarari, Bahia. A radioactive anomaly of large exte...

E. Gorsky V. A. Gorsky

1974-01-01

289

Regulación de la Sangre y los Componentes Sanguíneos en ...  

Center for Biologics Evaluation and Research (CBER)

Text Version... America's Blood Centers, compuesta de centros sanguíneos individuales con licencia, recolecta un 45 por ciento adicional del suministro nacional ... More results from www.fda.gov/downloads/biologicsbloodvaccines/internationalactivities

290

Pigment pattern and expression of colour in fruits from different Hylocereus sp. genotypes  

Microsoft Academic Search

Pigment profiles, betalain contents, colour and pH-values were studied in fruits from five Hylocereus sp. genotypes originating from Costa Rica. Significant colour differences between fruit pulps from “Nacional” and “San Ignacio” were found for C?-values and “Lisa” exhibited the most reddish tint h°. Whereas highest betalain contents were registered in “San Ignacio” and “Orejona”, lowest values were found in “Nacional”.

Patricia Esquivel; Florian C. Stintzing; Reinhold Carle

2007-01-01

291

Bioluminescent Mycena species from São Paulo, Brazil.  

PubMed

Six species of bioluminescent agarics are described and illustrated from a single site in primary Atlantic Forest habitat in the Parque Estadual Turistico do Alto Ribeira, Sao Paulo State, Brazil. These include two new taxa of Mycena, viz. M. asterina and M. lucentipes. Luminescence in Mycena fera, M. singeri and M. discobasis is reported for the first time. In addition an undeterminable luminescent Mycena species is described and additional specimens of Gerronema viridilucens are documented. An accounting of known bioluminescent species of Mycena and a discussion of why they luminesce are presented. PMID:17682785

Desjardin, Dennis E; Capelari, Marina; Stevani, Cassius

292

Structural framework and Mesozoic Cenozoic evolution of Ponta Grossa Arch, Paraná Basin, southern Brazil  

NASA Astrophysics Data System (ADS)

The integration of structural analyses of outcrops, aerial photographs, satellite images, aeromagnetometric data, and digital terrain models can establish the structural framework and paleostress trends related to the evolution of Ponta Grossa Arch, one of the most important structures of the Paraná Basin in southern Brazil. In the study area, the central-northern region of Paraná State, Brazil, the arch crosses outcropping areas of the Pirambóia, Botucatu, and Serra Geral Formations (São Bento Group, Mesozoic). The Pirambóia and Botucatu Formations are composed of quartz sandstones and subordinated siltstones. The Serra Geral Formation comprises tholeiitic basalt lava flows and associated intrusive rocks. Descriptive and kinematic structural analyses reveal the imprint of two brittle deformation phases: D1, controlled by the activation of an extensional system of regional faults that represent a progressive deformation that generated discontinuous brittle structures and dike swarm emplacement along a NW SE trend, and D2, which was controlled by a strike-slip (transtensional) deformation system, probably of Late Cretaceous Tertiary age, responsible for important fault reactivation along dykes and deformation bands in sandstones.

Strugale, Michael; Rostirolla, Sidnei Pires; Mancini, Fernando; Portela Filho, Carlos Vieira; Ferreira, Francisco José Fonseca; de Freitas, Rafael Corrêa

2007-09-01

293

Antibiotic activity of lectins from marine algae against marine vibrios.  

PubMed

Saline and aqueous ethanol extracts of marine algae and the lectins from two red algal species were assayed for their antibiotic activity against marine vibrios. Experimental studies were also carried out on the influence of environmental factors on such activity, using batch cultures. The results indicated that many of the saline extracts of the algal species were active and that the activity was selective against those vibrios assayed. The algal extracts were active against Vibrio pelagius and the fish pathogen V. vulnificus, but inactive against V. neresis. Algal lectins from Eucheuma serra (ESA) and Galaxaura marginata (GMA) strongly inhibited V. vulnificus but were inactive against the other two vibrios. The antibacterial activity of algal extracts was inhibited by pretreatment with various sugars and glycoprotein. Extracts of the two red algae, E. serra and Pterocladia capillacea, in saline and aqueous ethanol, inhibited markedly the growth rate of V. vulnificus at very low concentrations. Culture results indicated that metabolites active against V. vulnificus were invariably produced in P. capillacea over a wide range of temperature, light intensity, and nutritional conditions. Enhanced antibacterial activity occurred when P. capillacea was grown under higher irradiance, severe nutrient stress and moderate temperature (20 degrees C), reflecting the specific antibiotic characteristics of this alga. The strong antibiotic activity of lectins towards fish pathogenic bacteria reveals one of the important roles played by algal lectins, as well as the potential high economic value of those marine algae assayed for aquaculture and for biomedical purposes. PMID:12884128

Liao, W-R; Lin, J-Y; Shieh, W-Y; Jeng, W-L; Huang, R

2003-07-23

294

Air pollution and hospital admissions for respiratory diseases in the subequatorial Amazon: a time series approach.  

PubMed

The objective of the study is to evaluate the effect of the daily variation in concentrations of fine particulate matter (diameter less than 2.5 microm--PM2.5) resulting from the burning of biomass on the daily number of hospitalizations of children and elderly people for respiratory diseases, in Alta Floresta and Tangará da Serra in the Brazilian Amazon in 2005. This is an ecological time series study that uses data on daily number of hospitalizations of children and the elderly for respiratory diseases, and estimated concentration of PM2.5. In Alta Floresta, the percentage increases in the relative risk (%RR) of hospitalization for respiratory diseases in children were significant for the whole year and for the dry season with 3-4 day lags. In the dry season these measurements reach 6% (95%CI: 1.4-10.8). The associations were significant for moving averages of 3-5 days. The %RR for the elderly was significant for the current day of the drought, with a 6.8% increase (95%CI: 0.5-13.5) for each additional 10 microg/m3 of PM2.5. No associations were verified for Tangará da Serra. The PM2.5 from the burning of biomass increased hospitalizations for respiratory diseases in children and the elderly. PMID:20512215

Ignotti, Eliane; Hacon, Sandra de Souza; Junger, Washington Leite; Mourão, Dennys; Longo, Karla; Freitas, Saulo; Artaxo, Paulo; Leon, Antônio Carlos Monteiro Ponce de

2010-04-01

295

Ochres from rituals of prehistoric human funerals at the Toca do Enoque site, Piauí, Brazil  

NASA Astrophysics Data System (ADS)

The archaeological site known as Toca do Enoque (geographical coordinates, 09° 14' 65.3? S 43° 55' 62.5? W) is a rock shelter located in the Serra das Andorinhas (Serra das Confusões National Park), rural area of the city of Guaribas, state of Piauí, Brazil. Several rupestrian paintings (anthropomorphic and zoomorphic motifs along with some pure graphisms), predominantly in red, are found on the sandstone walls. Charcoals, lithic materials, necklaces with teeth, animal bones, gastropod shells, ochres and human skeletons (dated from 6,220 ± 40 to 6,610 ± 40 years before present, BP) were identified in recent excavations in this shelter. Red and yellow ochre samples were collected from prehistoric funeral structures and analyzed with powder X-ray diffractometry, Fourier-transform infrared spectroscopy and 57Fe transmission Mössbauer spectroscopy at 298 K and 80 K. Mössbauer data indicate that the red ochre do contain predominantly hematite ( ?-Fe2O3) whereas goethite ( ?-FeOOH) is the major mineral in the yellow ochre.

Cavalcante, Luis Carlos Duarte; da Luz, Maria De Fátima; Guidon, Niéde; Fabris, José Domingos; Ardisson, José Domingos

2011-11-01

296

The Intraplate Seismogenic Zone of Porto dos Gauchos in the Amazon Craton, Brazil  

NASA Astrophysics Data System (ADS)

The Porto dos Gauchos Seismogenic Zone (PGSZ), in the center north of Mato Grosso State, in the contact between the southern Amazonian Craton and northern Parecis Basin, represents one of the most important area of seismic activity in Brazil, with the largest magnitude ever observed in the stable continent of the South America plate (6.2 mb on January 31, 1955). Focal mechanism studies indicated a pure reverse faulting regime with compressional SHmax. oriented in SE-NW direction. After the 1955 earthquake, located in Serra do Tombador, a recurrent seismicity has been detected in Porto dos Gauchos, 100 km northeast of Serra do Tombador. No recent events have been detected in the area of the 1955 epicenter, suggesting a long recurrence time or mislocation of Serra do Tombador earthquake. The Porto dos Gauchos recurrent seismicity has been observed since 1959, when a 4.5 macroseismic estimated magnitude was felt by local inhabitants settled in that remote area two years earlier. In subsequent years, with deployment of regional stations in Brazilian Amazon region earthquakes were detected in 1981 (3.8 mb), 1989 (3.3 mb), 1993 (3.8 mb), 1996 (4.4 mb), 1997 (3.3 mb), and finally on March 10, 1998 (5.1 mb). The aftershocks of 1998 main shock were studied with a local network with up to eight 3- component stations. Such network detected more than 2500 events until December of 2002, when the network was deactivated, but only 100 were accurately located. Based on this set of events and a controlled source experiment we determined a 1-D velocity model for the area, a composite focal mechanism with P wave polarities, spectral analysis studies to estimate the source dimension, stress drop and moment magnitudes for the main shock and some others events of the set. On March 23, 2005 another shock occurred in the same seismogenic area of Porto dos Gauchos, with magnitude 4.7 to 5.0. One week later five stations were installed again to monitor the aftershock activity, detecting more than 2000 events in three months. Hypocentral determination, with different hypocentral location programs (Hypocenter, Hypo71, Hypoinverse, Velest and NonLinLoc) and a composite focal mechanism indicated the same source location and similar fault regime (dextral transcurrent fault for both 1998 and 2005 sequences). In this work, besides a brief review of the seismotectonic of the PGSZ we intend to present additional results of better constrained composite focal mechanisms including the P, SH, and SV amplitudes ratios for the two sequences and an attempt to get focal mechanism solution for the main shock of March 1998 based on regional stations.

Barros, L. V.; Assumpcao, M. S.; Quintero, R. Q.

2007-05-01

297

The parent magmas of the cumulate eucrites: A mass balance approach  

NASA Astrophysics Data System (ADS)

The cumulate eucrite meteorites are gabbros that are related to the eucrite basalt meteorites. The eucrite basalts are relatively primitive (nearly flat REE patterns with La ~ 8-30 3 CI), but the parent magmas of the cumulate eucrites have been inferred as extremely evolved (La to > 100 3 CI). This inference has been based on mineral/magma partitioning, and on mass balance considering the cumulate eucrites as adcumulates of plagioclase + pigeonite only; both approaches have been criticized as inappropriate. Here, mass balance including magma + equilibrium pigeonite + equilibrium plagioclase is used to test a simple model for the cumulate eucrites: that they formed from known eucritic magma types, that they consisted only of magma + crystals in chemical equilibrium with the magma, and that they were closed to chemical exchange after the accumulation of crystals. This model is tested for major and rare earth elements (REE). The cumulate eucrites Serra de Mag and Moore County are consistent, in both REE and major elements, with formation by this simple model from a eucrite magma with a composition similar to the Nuevo Laredo meteorite: Serra de Mag as 14% magma, 47.5% pigeonite, and 38.5% plagioclase; Moore County as 35% magma, 37.5% pigeonite, and 27.5% plagioclase. These results are insensitive to the choice of mineral/magma partition coefficients. Results for the Moama cumulate eucrite are strongly dependent on choice of partition coefficients; for one reasonable choice, Moama's composition can be modeled as 4% Nuevo Laredo magma, 60% pigeonite, and 36% plagioclase. Selection of parent magma composition relies heavily on major elements - the REE cannot uniquely indicate a parent magma among the eucrite basalts. The major element compositions Y-791195 can be fit adequately as a simple cumulate from any basaltic eucrite composition. However, Y791195 has LREE abundances and La/Lu too low to be accommodated within the model using any basaltic eucrite composition and any reasonable partition coefficients. Post-cumulus loss of incompatible elements seems possible. It is intriguing that Serra de Mag, Moore County, and Moama are consistent with the same parental magma - could they be from the same igneous body on the eucrite parent asteroid (4 Vesta)?

Treiman, Allan H.

1997-03-01

298

Night-sky brightness at observatories and sites  

NASA Astrophysics Data System (ADS)

A model previously constructed for night-sky brightness calculations has been modified to allow for the curvature of the earth. The model has been applied to calculate the brightness at the following observatories: Mount Wilson, Lick, Mount Palomar, Kitt Peak, Sacramento Peak, Mauna Kea, McDonald, San Pedro Martir, Mount Hopkins, Mount Lemmon, Lowell (Mars Hill), Lowell (Anderson Mesa), Fick, Iowa, Van Vleck, David Dunlap, Anglo-Australian, Haute Provence, and Cerro Tololo. Calculations have also been carried out for the following prospective observatory sites: Junipero Serra, Mount Graham, Charleston Peak, Wheeler Peak, Miller Peak, San Benito Mountain, Lowell (Hutch Mountain), Lowell (Saddle Mountain), and South Baldy (New Mexico). The model is extended to calculate magnitudes in the B photometric band.

Garstang, R. H.

1989-03-01

299

Nerocila species (Crustacea, Isopoda, Cymothoidae) from Indian marine fishes.  

PubMed

Eleven Nerocila species are recorded from 22 marine fishes belonging to 15 families. Three, Nerocila arres, Nerocila depressa, and Nerocila loveni, are new for the Indian fauna. N. arres and Nerocila sigani, previously synonymized, are redescribed and their individuality is restored. Nerocila exocoeti, until now inadequately identified, is described and distinctly characterized. A neotype is designated. New hosts were identified for N. depressa, N. loveni, Nerocila phaiopleura, Nerocila serra, and Nerocila sundaica. Host-parasite relationships were considered. The parasitologic indexes were calculated. The site of attachment of the parasites on their hosts was also observed. A checklist of the nominal Nerocila species until now reported from Indian marine fishes was compiled. PMID:23324945

Trilles, Jean-Paul; Rameshkumar, Ganapathy; Ravichandran, Samuthirapandian

2013-01-17

300

A vanadium-dependent bromoperoxidase in the marine red alga Kappaphycus alvarezii (Doty) Doty displays clear substrate specificity.  

PubMed

Bromoperoxidase activity was initially detected in marine macroalgae belonging to the Solieriaceae family (Gigartinales, Rhodophyta), including Solieria robusta (Greville) Kylin, Eucheuma serra J. Agardh and Kappaphycus alvarezii (Doty) Doty, which are important industrial sources of the polysaccharide carrageenan. Notably, the purification of bromoperoxidase was difficult because due to the coexistence of viscoid polysaccharides. The activity of the partially purified enzyme was dependent on the vanadate ion, and displayed a distinct substrate spectrum from that of previously reported vanadium-dependent bromoperoxidases of marine macroalgae. The enzyme was specific for Br- and I- ions and inactive toward F- and Cl-. The K(m) values for Br- and H2O2 were 2.5x10(-3) M and 8.5x10(-5) M, respectively. The halogenated product, dibromoacetaldehyde, that accumulated in K. alvarezii was additionally determined. PMID:17434548

Kamenarska, Zornitsa; Taniguchi, Tomokazu; Ohsawa, Noboru; Hiraoka, Masanori; Itoh, Nobuya

2007-04-16

301

Muon and neutron observations in connection with the corotating interaction regions  

NASA Astrophysics Data System (ADS)

Ground cosmic ray observations are used for studying several kinds of interplanetary structures. The cosmic ray data has different responses to each kind of interplanetary structure. This article has as objective to study cosmic ray muon and neutron signatures due to the passage of corotating interaction region (CIR) in the interplanetary medium, and identify the signatures in the cosmic ray data due to these events. The cosmic ray muon data used in this work are recorded by the multidirectional muon detector installed at INPE’s Observatório Espacial do Sul OES/CRSPE/INPE-MCT, in São Martinho da Serra, RS (Brazil) and the neutron data was recorded by the neutron monitor installed in Newark (USA). The CIR events were selected in the period from 2001 to 2004. CIRs clearly affect cosmic ray density in the interplanetary medium in the Earth’s vicinity, where the magnetic field plays an important role.

da Silva, M. R.; Dal Lago, A.; Echer, E.; de Lucas, A.; Gonzalez, W. D.; Schuch, N. J.; Munakata, K.; Vieira, L. E. A.; Guarnieri, F. L.

302

Nova in Puppis  

NASA Astrophysics Data System (ADS)

Nova Puppis 2007 was discovered visually by Alfredo Jose Serra Pereira, Carnaxide, Portugal, on November 14.23 UT at visual magnitude 7.0. The discovery was announced in IAU Circular No. 8895 (Daniel W. E. Green, Ed.). The nova is located at 08:16:17.99 -34:15:25.0 (J2000, J. Young and H. Rhoades, Table Mountain Observatory, near Wrightwood, CA). Nothing was visible down to magnitude 8 on November 6.23, 7.22, 8.23, 10.23, and 11.22 UT. Young reports that a red image of the field from the Digitized Sky Survey contains a point source at an approximate magnitude of 20. No spectra have yet been published. Please report observations to the AAVSO International Database as N PUP 2007.

Templeton, Matthew R.

2007-11-01

303

Analysis of the astronomical concepts presented by teachers of some state schools  

NASA Astrophysics Data System (ADS)

Many Basic Education's teachers (EB) don't deal concepts related to astronomy and when they do so, they just follow didactic books which contain many conceptual errors. Astronomy is one of the contents taught in the EB and is part of the curriculum proposed by the Education Department of the State of São Paulo. With the intention to minimise some deficiencies, a University Extension Course for teachers of the Diretoria de Ensino Regional (Mauá, Ribeirão Pires and Rio Grande da Serra) was conducted with the following objectives: to raise alternative conceptions, to subsidise teachers by means of lectures, discussions and workshops, and to check the learning after the course. Therefore, sixteen questions were applied before and after the course. The results were quite satisfactory.

Gonzaga, E. P.; Voelzke, M. R.

2011-06-01

304

Electron spin resonance dating of human teeth from Toca da Santa shelter of São Raimundo Nonato, Piauí, Brazil  

NASA Astrophysics Data System (ADS)

Results of the dating of fossil human teeth excavated from a shelter in the surroundings areas of the Serra da Capivara National Park, São Raimundo Nonato, Piauí, Brazil are presented. This shelter was partially excavated to search for more data that could improve the archaeological context of the Garrincho’s limestone hill sites, where the Toca do Gordo do Garrincho shelter provided two human teeth dated by conventional C-14 in (12,170 ± 40) yBP (years before present) and calibrated age (2 Sigma, 95% probability) 15,245 14,690 yBP (Beta 136204) [E. Peyre, C. Guérin, N. Guidon, I. Coppens, CR Acad. Sci. Paris, Sciences de la terre et des planètes/ Earth & Planetary Sciences 327 (1998) 335, [1

Kinoshita, A.; Figueiredo, A. M. G.; Felice, G. D.; Lage, M. C. S. M.; Guidon, N.; Baffa, O.

2008-02-01

305

Finding of probable Tunguska Cosmic Body material: anomalies in platinum group elements in peat from the explosion area  

NASA Astrophysics Data System (ADS)

Further evidencies of a cometary nature of the 1908 Tunguska Cosmic Body (TCB) are presented. Earlier in the event layers of the Sphagnum fuscum peat from the explosion area, anomalies, relative to Earth-materials, of the elements H, C, and N—all abundant in comets—have been found [E.W. Kolesnikov, T. Boettger and N.V. Kolesnikova, Planet. Space Sci. 47 905 (1999); E.M. Kolesnikov, G. Longo, T. Boettger, N.V. Kolesnikova, P. Gioacchini, L. Forlani, R. Giampieri and R. Serra, Icarus 161 235 (2003).]. At the present work we revealed a sharp increase of concentrations of platinum group elements (PGE), REE and other elements in the event layers as well. Their ratios point to a cometary nature of the anomalies observed.

Kolesnikov, E. M.; Hou, Q. L.; Xie, L. W.; Kolesnikova, N. V.

2005-04-01

306

Factors Mediating Alcohol Craving and Relapse: Stress, Compulsivity, and Genetics  

PubMed Central

This article represents the proceedings of a symposium at the 2004 annual meeting of the International Society for Biomedical Research on Alcoholism in Heidelberg, Germany. The symposium was organized by Zachary A. Rodd and Giancarlo Colombo. The presentations were (1) Pharmacological reversal of cycled withdrawal-sensitized or stress-sensitized withdrawal anxiety and enhanced ethanol drinking, by Darin J. Knapp and George R. Breese, (2) Alcohol craving and relapse in rats genetically selected for high alcohol preference, by Zachary A. Rodd and Richard L. Bell, (3) Exposure to stress increases dopaminergic burst firing in awake rats, by Kristin Anstrom and Donald J. Woodward, (4) Involvement of cannabinoid CB1 and GABAB receptors in the control of relapse-like drinking in alcohol-preferring Sardinian alcohol-preferring rats by Giancarlo Colombo and Salvatore Serra, and (5) Stress-induced ethanol drinking in CB1?/?, POMC, and PENK knockout mice, by Idiko Racz and Andreas Zimmer.

Rodd, Zachary A.; Anstrom, Kristin K; Knapp, Darin J.; Racz, Ildiko; Zimmer, Andreas; Serra, Salvatore; Bell, Richard L.; Woodward, Donald J.; Breese, George R.; Colombo, Giancarlo

2010-01-01

307

The Mesozoic Continental Magmatism in Brazil: its Role in the Western Gondwana Evolution from Integrated Paleomagnetic and Geochemical Data  

NASA Astrophysics Data System (ADS)

Most of the Paleozoic era in the South American platform represents a period of tectonic quiescence during which large sedimentary basins evolved. Subsequently an intense magmatic activity took place preceding the disclosure of the Gondwana from Pangea, and later the disruption of the western Gondwana blocks (South America and Africa separation). In Brazil Early Jurassic (~220-180 Ma) tholeiitic basalts erupted mostly in the northern area (Amazonas and Parnaíba basins), whereas the Early Cretaceous (~140-120 Ma) is best represented by the huge magmatism of the Serra Geral Formation (Paraná basin, southeastern Brazil). An intense associated intrusive activity in the form of dykes and sills of both ages is widespread all over the country but tends to concentrate towards the continental margins. The integration of paleomagnetic and geochemical data on the Brazilian Mesozoic magmatism put some constraints on the timing, duration and the mantle sources involved in the generation of the magma products related to the different magmatic events.

Ernesto, M.; Marques, L. S.

2011-12-01

308

Impact of natural climate change and historical land use on landscape development in the Atlantic Forest of Rio de Janeiro, Brazil.  

PubMed

Climate variations and historical land use had a major impact on landscape development in the Brazilian Atlantic Forest (Mata Atlântica). In southeast Brazil, rainforest expanded under warm-humid climate conditions in the late Holocene, but have been dramatically reduced in historical times. Nevertheless, the numerous remaining forest fragments are of outstanding biological richness. In our research in the Atlantic Forest of Rio de Janeiro we aim at the reconstruction of the late Quaternary landscape evolution and an assessment of human impact on landscapes and rainforests. In this context, special focus is given on (a) effects of climate variations on vegetation cover, soil development, and geomorphological processes, and (b) spatial and temporal land use and landscape degradation patterns. In this paper we present some new results of our interdisciplinary research in the Serra dos Órgãos mountain range, state of Rio de Janeiro. PMID:23828337

Nehren, Udo; Kirchner, André; Sattler, Dietmar; Turetta, Ana Paula; Heinrich, Jürgen

309

Maximum ecological potential of tropical reservoirs and benthic invertebrate communities.  

PubMed

The Reference Condition Approach (RCA) is now widely adopted as a basis for the evaluation of the ecological quality of water bodies. In accordance with the RCA, the integrity of communities found in a given location should be analyzed according to their deviation from the communities that would be expected in the absence of anthropogenic disturbances. The RCA was used here with the aim of defining the Maximum Ecological Potential (MEP) of tropical reservoirs located in the hydrographical basin of the Paraopeba River in the state of Minas Gerais, Brazil. Among the reservoirs, Serra Azul is used as a water supply and is located in a core area of environmental protection where tourism is not allowed and the native vegetation is conserved. The benthic macroinvertebrate communities at 90 sites located in three reservoirs were analyzed and sampled every 3 months over 2 years. The temporal patterns of the communities in the three reservoirs were analyzed (2nd-STAGE MDS and ANOSIM) and were not significantly related to seasonal fluctuations in temperature and precipitation. Twenty-eight sites belonging to the Serra Azul reservoir were selected to define the MEP of these reservoirs because these sites had the lowest human disturbance levels. The macroinvertebrate taxa present in the selected MEP sites are similar to those of natural lakes and different from the communities of disturbed sites. The biological classification of these sites revealed two groups with distinct macroinvertebrate communities. This distinction was related to climatic variables, bottom substrate type, the presence of gravel/boulders, coarse sand, silt, clay or muck, depth, and the shoreline substrate zone. These two subsets of biological communities and respective environmental conditions can serve as a basis for the future implementation of ecological quality monitoring programs for tropical reservoirs in the study area. This approach can also, however, be implemented in other geographic areas with artificial or heavily modified water bodies. PMID:23288597

Molozzi, Joseline; Feio, Maria João; Salas, Fuensanta; Marques, João Carlos; Callisto, Marcos

2013-01-05

310

POLYCYCLIC AROMATIC HYDROCARBONS ASSESSMENT IN SEDIMENT OF NATIONAL PARKS IN SOUTHEAST BRAZIL  

PubMed Central

The aim of this work was to assess the levels of polycyclic aromatic hydrocarbons (PAHs) in the environment and their sources found in protected regions of southeastern Brazil. Samples of sediments were collected at four National Parks: Itatiaia National Park (PNIT), Serra da Bocaina National Park (PNSB), Serra dos Orgãos National Park (PNSO) and Jurubatiba National Park (PNJUB). The National Parks studied comprise rainforests, altitudinal fields and ‘restinga’ environments located in the Minas Gerais, Rio de Janeiro and São Paulo states. The sampling was conducted between 2002 and 2004 from June to September. In general, the environmental levels of PAHs found were similar to those in other remote areas around the globe. PNIT exhibited the highest median values of total PAHs in sediment (97 ng·g?1), followed by PNJUB (89 ng·g?1), PNSO (57 ng·g?1) and PNSB (27 ng·g?1). The highest levels of total PAHs (576 and 24430 ng·g?1) could be associated to a point source contamination where are characterizated for human activities. At PNSB and PNIT the PAH profiles were richer in 2 and 3 ring compounds, whereas at PNSO and PNJUB, the profiles exhibited 3 and 4 ring compounds. The phenanthrene predominance in most samples could indicate the influence of biogenic synthesis. The samples with a petrogenic pattern found in this study might be associated with the vicinity of major urban areas, highway traffic and/or industrial activities close to PNSO and PNIT. At PNIT and PNJUB, forest fires and slash and burn agricultural practices may drive the results towards a pyrolytic pattern.

Meire, Rodrigo Ornellas; Azeredo, Antonio; de Souza Pereira, Marcia; Paulo, Joao; Torres, Machado; Malm, Olaf

2008-01-01

311

Effect of Chronic Treatment with Conventional and Organic Purple Grape Juices (Vitis labrusca) on Rats Fed with High-Fat Diet.  

PubMed

Serra Gaucha is described as the most important wine region of Brazil. Regarding cultivars widespread in the Serra Gaucha, about 90 % of the area is occupied by vines of Vitis labrusca that is the most important specie used in grape juice production. The objective of this study was to investigate the antioxidant and neuroprotective effect of chronic intake of purple grape juice (organic and conventional) from Bordo variety (V. labrusca) on oxidative stress in different brain regions of rats supplemented with high-fat diet (HFD) for 3 months. A total of 40 male rats were randomly divided into 4 groups. Group 1 received a standard diet and water, group 2 HFD and water, group 3 HFD and conventional grape juice (CGJ), and group 4 HFD and organic grape juice (OGJ). All groups had free access to food and drink and after 3 months of treatment the rats were euthanized by decapitation and the cerebral cortex, hippocampus and cerebellum isolated and homogenized on ice for oxidative stress analysis. We observed that the consumption of calories in HFD and control groups, were higher than the groups supplemented with HFD and grape juices and that HFD diet group gain more weight than the other animals. Our results also demonstrated that HDF enhanced lipid peroxidation (TBARS) and protein damage (carbonyl) in cerebral cortex and hippocampus, reduced the non-enzymatic antioxidants defenses (sulfhydryl) in cerebral cortex and cerebellum, reduced catalase and superoxide dismutase activities in all brain tissues and enhanced nitric oxide production in all cerebral tissues. CGJ and OGJ were able to ameliorate these oxidative alterations, being OGJ more effective in this protection. Therefore, grape juices could be useful in the treatment of some neurodegenerative diseases associated with oxidative damage. PMID:23989908

Cardozo, Marcia Gilceane; Medeiros, Niara; Dos Santos Lacerda, Denise; de Almeida, Daniela Campos; Henriques, João Antônio Pegas; Dani, Caroline; Funchal, Cláudia

2013-08-30

312

[Spatio-temporal dynamic of green lacewings (Neuroptera: Chrysopidae) taxocenosis on natural ecosystems].  

PubMed

In order to study the interactions of green lacewings toxocenosis on natural ecossystems, samplings were carried out in the Parque Ecológico Quedas do Rio Bonito, located in Lavras, Alto Rio Grande region, South of Minas Gerais, Brazil. The species inventory was accomplished in two vegetation types: semi-evergreen forest and open field formations, including areas of montane grassland, rocky montane grassland and "cerrado". Insects were captured with a butterfly net during 2h, walking through each vegetation formation. Sampling resulted in 1,948 specimens belonging to 30 species, of which 14 were Chrysopini and 16 Leucochrysini. Representatives of these tribes were observed both in forest and in open field formations. Species of the genera Ceraeochrysa, Chrysoperla, Chrysopodes, Plesiochrysa and Leucochrysa were found in forests and in open field formations, except for Plesiochrysa. The highest richness and diversity of species were observed in the forest. The similarity index among the communities of green lacewings in the studied areas was 27%. PMID:20877980

Costa, Renildo I F; Souza, Brígida; Freitas, Sérgio De

313

Bird community in a forest patch isolated by the urban matrix at the Sinos River basin, Rio Grande do Sul State, Brazil, with comments on the possible local defaunation.  

PubMed

We compared the avifauna recorded in a recent survey in an urban park (Parque Municipal Henrique Luís Roessler, Parcão) and surroundings, Novo Hamburgo, RS, with past data, to evaluate the possible alterations in species composition over time. Of the 265 species compiled as original elements of that region, 114 were found at Parcão. Among forest species, 37% were considered locally extinct. The most affected guild was the large frugivores, with nine extinct species and one survivor (Trogon surrucura). Birds highly sensitive to disturbance as well as endemic species were the most extinguished. The possible causes for this loss are fragmentation, hunting and environmental changes. The diversity today is threatened, thus conservation measures are necessary in that region. The most important actions are: maintenance of ecological corridors, protection of natural remnant areas and the establishment of protected areas. PMID:21225154

Franz, I; Cappelatti, L; Barros, M P

2010-12-01

314

Sequential Determination of U and Th Decay Series in Santana Cave, Southwest Brazil  

SciTech Connect

Parque Estadual Turistico do Alto Ribeira (PETAR) is located in the South-western part of Sao Paulo State, in the Ribeira Valley. In this national state park a large number of caves are found, which are among the most visited of the country. These caves, located in a karstic zone, are characterized by the presence of carbonaceous rocks frequently fractured and collapsed. Although, carbonates (dolomites and calcitic rocks) usually have low U content, this element can be found in the structure of the surrounding rocks. This paper aims to determine {sup 238}U, {sup 234}U, {sup 226}Ra and {sup 210}Pb concentration in samples of rock, soil, river water and sediment, in Santana cave. The radionuclide {sup 238}U was determined by alpha spectrometry using a surface barrier detector. {sup 226}Ra and {sup 210}Pb were determined by measuring the gross alpha and beta activity on a gas flow proportional counter.

Silva, P. S. C.; Damatto, S. R.; Mazzilli, B. P. [Centro de Metrologia das Radiacoes Instituto de Pesquisas Energeticas e Nucleares Av. Prof. Lineu Prestes 2242-Cidade Universitaria-CEP 05508 000 Sao Paulo (Brazil)

2008-08-07

315

Sequential Determination of U and Th Decay Series in Santana Cave, Southwest Brazil  

NASA Astrophysics Data System (ADS)

Parque Estadual Turístico do Alto Ribeira (PETAR) is located in the South-western part of Sa~o Paulo State, in the Ribeira Valley. In this national state park a large number of caves are found, which are among the most visited of the country. These caves, located in a karstic zone, are characterized by the presence of carbonaceous rocks frequently fractured and collapsed. Although, carbonates (dolomites and calcitic rocks) usually have low U content, this element can be found in the structure of the surrounding rocks. This paper aims to determine 238U, 234U, 226Ra and 210Pb concentration in samples of rock, soil, river water and sediment, in Santana cave. The radionuclide 238U was determined by alpha spectrometry using a surface barrier detector. 226Ra and 210Pb were determined by measuring the gross alpha and beta activity on a gas flow proportional counter.

Silva, P. S. C.; Damatto, S. R.; Mazzilli, B. P.

2008-08-01

316

Fountain rainbows.  

PubMed

We present the first measurements of radiance spectra of rainbows. The bows on two sunny days (3 and 6 June 2008) were produced by the fountain in the Parque de las Ciencias, Granada, Spain, that consists of a rectangular perimeter of 40 spray nozzles. Optical thickness of the spray from each nozzle was approximately 0.5. Spectral purity of the primary bow was highest for orange and blue, reaching values of 23% and 7%, respectively, while skylight 90 degrees from the Sun had a color purity of 34% (on 6 June). The secondary bow had much lower color purity with red absent because the regions around the bows and in Alexander's dark band were pale blue. The narrow sickle shape of the chromaticity curves for the primary bows and the absence of supernumerary bows indicated that the drop radius was between 0.2 and 0.4 mm. PMID:19037346

Gedzelman, Stanley David; Hernández-Andrés, Javier

2008-12-01

317

Vale a pena desarmar? Uma avaliação do impacto da campanha de entrega voluntária de armas sobre as mortes com armas de fogo  

Microsoft Academic Search

Resumo O objetivo deste trabalho foi avaliar o impacto da campanha de entrega de armas (política de buy-back) sobre a incidência de óbitos com armas de fogo no Estado do Paraná. Visto que neste estado esta campanha teve início seis meses antes da campanha nacional, foi possível utilizar o estimador de diferenças em diferenças, em que os municípios paranaenses constituíram

Milena Karla Soares; Luiz Guilherme Dácar Da Silva Scorzafave

2008-01-01

318

Dinámica del Desempeño Académico  

Microsoft Academic Search

Este trabajo se ocupa del progreso, luego del ingreso, de los estudiantes de la cohorte 2000 de la Facultad de Ciencias Económicas de la Universidad Nacional de La Plata. Si bien hay antecedentes de medición del rendimiento de los estudiantes de la Facultad y sus factores explicativos, se trata de estudios realizados en base a encuestas a alumnos regulares en

Luciano Di Gresia; Alberto Porto

2004-01-01

319

Gestión por competencias: importante para las pymes maquila de pantalón en índigo en la ciudad de Bogotá  

Microsoft Academic Search

Este artículo presenta una revisión de literatura internacional y nacional, sobre temas como el de competencias, los tipos de competencias, competencias laborales y proceso de implementación de la gestión por competencias. Adicionalmente, se muestra la reseña sobre la gestión por competencias en Colombia, así como la metodología utilizada para el trabajo de campo con relación al tema del artículo y

Nathalia Andrea Martínez Valero; Juan Carlos Rincón Gaviria

2010-01-01

320

Soltando las Amarras - Algunas consideraciones sobre la cancelación de la deuda con el FMI  

Microsoft Academic Search

Este trabajo tiene por objeto analizar dentro de los resultados y proyecciones de la deuda pública, el sentido, impacto y efectos de la decisión gubernamental de cancelar la deuda pública nacional contraída con el FMI. En tal propósito se analizan los motivos que condujeron a la decisión de desendeudarse con el FMI, examinándo las propuestas alternativas a aquella solución, barajadas

Agustin Torres

321

Une nouvelle partition des dépenses publiques  

Microsoft Academic Search

[spa] Con el advenimiento del euro, la coordinación de las políticas presupuestarias se ha convertido en un objetivo europeo fundamental. La evolución del gasto público cobra una relevancia particular y requiere un enfoque global. A este respecto, el sistema de contabilidad nacional es la referencia privilegiada, sobre todo en el ámbito del control europeo de la evolución de los gastos

Jérôme Bascher; Marie Niedergang

2001-01-01

322

Músico, Exilio y Memoria — La Lucha Por Los Restos De Manuel De Falla  

Microsoft Academic Search

En vísperas de la guerra civil, España era uno de los centros intelectuales más efervescentes de Europa. A partir de 1898, tras perder los últimos restos del Imperio en el Nuevo Mundo (Cuba y Puerto Rico), y particularmente en los años de la Segunda República (1931–1936), se llevaron a cabo apasionantes debates sobre cuestiones de identidad nacional y el sendero

Raanan Rein

1996-01-01

323

Derechos de autor y uso de imágenes y contenido  

Cancer.gov

La mayor parte de la información en el sitio web del Instituto Nacional del Cáncer (NCI), Cancer.gov, es del dominio público y no está sujeta a las restricciones de los derechos de autor. No se requiere permiso especial para usar o reproducir materiales del dominio público.

324

From ecological science to environmental education: A professional turning point?  

Microsoft Academic Search

This article explores the significance of a shift in young people's professional career from ecological science to environmental education. The article reflects on the role of higher education in addressing social and political issues in environment and sustainability, and then provides an account of a course on environmental education research methodology at the Universidad Nacional Autfinoma de México. The course

Laura Barraza; Ian Robottom

325

The green potential of the San Pedro Mártir observatory  

Microsoft Academic Search

Weather observations carried out between October 2004 and July 2008 at the Mexican Observatorio Astronómico Nacional (OAN) are analyzed. Humidity in April, May and June was less than 55% nearly 90% of the time. Wind speed was larger at nightime and tended to decrease between March and November. Typical temperature variations during the night, for the entire day and for

J. Bohigas; J. M. Núñez

2010-01-01

326

Analysis and Recommendations on the Agrarian Reform Program in Ecuador.  

National Technical Information Service (NTIS)

The study gives a report on the financial problems of the Instituto Nacional de Reforma Agraria y Colonizacion (IERAC) which is the Ecuadoran agency for agrarian reform. Only $21,319,153 equivalent in agrarian reform bonds have been issued since the enact...

K. Himebaugh F. V. Beck L. Lekis

1966-01-01

327

Neurotoxic effects of thimerosal at vaccines doses on the encephalon and development in 7 days-old hamsters  

Microsoft Academic Search

Objectives: To determine if thimerosal administration in amounts equivalent to vaccines content produces neurotoxic effects on the encephalon in postnatal hamsters and on experimentation animal's development. Design: Experimental, prospective, bioetapic study. Setting: San Fernando Faculty of Medicine, Universidad Nacional Mayor de San Marcos. Biological material: Seven days- old hamsters. Material: We divided 45 postnatal hamsters in three groups: group A

Jonny Laurente; Fany Remuzgo; Betthina Ávalos; Johnnie Chiquinta; Bladimir Ponce; Ronald Avendaño; Luis Maya

328

Alternatives for the Training of Skilled Industrial Labor in Sao Paulo, Brazil. Program of Studies in Non-Formal Education, Supplementary Series. Paper No. 1.  

ERIC Educational Resources Information Center

The study deals with the development of skilled industrial manpower in Sao Paulo, Brazil, and with the Federal government's SENAI (Service Nacional de Aprendizagem Industrial) industrial apprenticeship and trainign program. An analysis of six variables among lathe setter-operators showed that: present work situations among the operators varied…

Lukomski, Michael

329

Estudio de los Institutos Nacionales de la Salud indica que quienes toman café tienen un riesgo menor de muerte  

Cancer.gov

Los adultos mayores que tomaron café, con o sin cafeína, tuvieron un riesgo menor de muerte en general que quienes no tomaron café, según un estudio llevado a cabo por investigadores del Instituto Nacional del Cáncer (NCI), parte de los Institutos Nacionales de la Salud, y por la Asociación Estadounidense de Personas Jubiladas (AARP).

330

Renamo, Malawi and the struggle to succeed Banda: Assessing theories of Malawian intervention in the Mozambican Civil War  

Microsoft Academic Search

Following its independence in 1975, the former Portuguese colony of Mozambique suffered a devastating civil war until the early 1990s. This war, between the ruling Frente de Libertação de Moçambique (Frelimo) and the Resistência Nacional Moçambicana (Renamo), was the context within which issues of underdevelopment and political divisions unfolded. It is well-documented that throughout the Civil War the Renamo rebels,

David Robinson

331

Movement of Sediment Associated With Lowered Reservoir Levels in the Rio La Venta Arm of the Presa Netzahualcoyotl, Chiapas, Mexico  

Microsoft Academic Search

A joint sedimentation study is currently underway at the Netzahualcoyotl reservoir in Chiapas, Mexico, involving the Comision Nacional de Areas Naturales Protegidas (CONANP) of the Secretaria de Medio Ambiente y Recursos Naturales and the USDA Forest Service. The reservoir is adjacent to the Reserva de la Biosfera, Selva El Ocote, administered by CONANP. Ongoing research is intended to provide watershed

S. Hilton; J. de La Fuente; T. E. Lisle; J. Velasquez; B. Allison; B. Olson; R. Quinones

2003-01-01

332

Trends in the Elemental Composition of Fine Particulate Matter in Santiago, Chile, from 1998 to 2003  

Microsoft Academic Search

Santiago, Chile, is one of the most polluted cities in South America. As a response, over the past 15 yr, numerous pollution reduction programs have been implemented by the environmental authority, Comisión Nacional del Medio Ambiente. This paper assesses the effectiveness of these interventions by examining the trends of fine particulate matter (PM2.5) and its associated elements. Daily fine particle

Sonja N. Sax; Petros Koutrakis; Pablo A. Ruiz Rudolph; Francisco Cereceda-Balic; Ernesto Gramsch; Pedro Oyola; Zhengmin Qian; Qingci He; Hung-Mo Lin; Lingli Kong; Duanping Liao; Niannian Yang; Christy Bentley; Shuangqing Xu; Benjamin Burns; Kenneth Krach; Charles Cole; Jessica Mangus; Howard Butler; Baikun Li; Donald Robinson; Ronke Luke-Boone; Vineet Aggarwal; Buzz Harris; Eric Anderson; David Ranum; Thomas Kulp; Karla Armstrong; Ricky Sommers; Thomas McRae; Karin Ritter; Jeffrey Siegell; Doug Pelt; Mike Smylie; Eugene Kim; Philip Hopke; Yi-Ming Kuo; Jian-Wen Wang; Cheng-Hsien Tsai; Stephen Musson; Timothy Townsend; Kurt Seaburg; John Mousa; Ke Du; Mark Rood; Byung Kim; Michael Kemme; Bill Franek; Kevin Mattison; Joan Cook; James Noel; Pratim Biswas; Daniel Giammar; Jorge Jimenez; Candis Claiborn; Timothy Larson; Timothy Gould; Thomas Kirchstetter; Lara Gundel

2007-01-01

333

Trends In The Elemental Composition Of PM2.5 In Santiago, Chile From 1998 To 2006  

Microsoft Academic Search

Santiago, Chile is one of the most polluted cities in South America. As a response, over the past 15 years, numerous pollution reduction programs have been implemented by the environmental authority, Comision Nacional del Medio Ambiente (CONAMA). This paper assesses the effectiveness of these interventions by examining the trends of PM2.5 and its elemental composition. Daily fine particle filter samples

P. Ruiz; P. Oyola; E. Gramsch; F. Moreno; P. Koutrakis

2007-01-01

334

Wind energy assessment and wind farm simulation in Triunfo – Pernambuco, Brazil  

Microsoft Academic Search

This paper presents a wind energy assessment and a wind farm simulation in the city of Triunfo in the state of Pernambuco in the northeast region of Brazil. The wind data were obtained from the SONDA (Sistema de Organização Nacional de Dados Ambientais) project’s meteor station (wind speed, wind direction and temperature) at both heights of 50 m during a period

Laerte de Araujo Lima; Celso Rosendo Bezerra Filho

2010-01-01

335

Pensando en Cynthia y su Hermana: Educational Implications of United States-Mexico Transnationalism for Children  

ERIC Educational Resources Information Center

|We use 3 brief educational biographies of students in Mexico who have previously attended public school in the United States to introduce this literature review on United States-Mexico transnational students. This article is also the first of several planned articles stemming from a currently ongoing, Consejo Nacional de Ciencia y…

Hamann, Edmund T.; Zuniga, Victor; Garcia, Juan Sanchez

2006-01-01

336

Basic Training Programme for Library Technicians in Mexico.  

ERIC Educational Resources Information Center

|The Consejo Nacional de Ciencia y Tecnologia (CONACYT), set up in 1971 to further scientific and technological advancement in Mexico, commissioned this determination of the steps necessary to promote the use of libraries and recorded scientific and technical information, and to foster the reading habits of the population. A brief overview…

Vilentchuk, Lydia

337

Economia Política de Petróleo e Gás: A Experiência Russa  

Microsoft Academic Search

A recuperação do poder central da Rússia no governo Putin com uma estratégia de desenvolvimento nacional foi o ponto de partida para uma revisão da política do Estado diante do setor de energia. O governo aumentou drasticamente a presença do Estado no setor de energia, e chegou a controlar, no final de 2007, 47% dos ativos, contra menos de 10%

Giorgio Romano Schutte

2010-01-01

338

Longitudinal dynamics with rf phase modulation in the Brazilian electron storage ring  

Microsoft Academic Search

In the Brazilian synchrotron light source (LNLS---Laboratório Nacional de Luz Síncrotron), we observed that modulating the phase of the accelerating fields at approximately twice the synchrotron frequency suppressed remarkably well a longitudinal coupled-bunch mode of the beam driven by a higher order mode in one of the radiofrequency (rf) cavities. In this work, we present the results of a set

N. P. Abreu; R. H. A. Farias; P. F. Tavares

2006-01-01

339

Asociación de linfomas malignos con herpes virus I y II  

Microsoft Academic Search

SUMMARY Objectives: To know the prevalence of seropositivity for herpes virus I and II in patients with malignant non Hodgkin lymphoma (NHL), and the association with the cell lineage (B or T). Patients and Methods: We considered 60 new or in first recurrence patients with NHL at the Hospital Nacional Guillermo Almenara from August 1999 to December 2000. We analyzed

ALARCON-ROZAS Ashley Efraín; SALAS SÁNCHEZ Fernando; VILLACRES VELA; GUEVARA Karina; GUEVARA Julio

2002-01-01

340

ERIC/CRESS News Letter, Volume 7, Nos. 1, 2, 3, & 4, 1972.  

ERIC Educational Resources Information Center

|The articles in this group of ERIC/CRESS (Educational Research Information Center/Clearinghouse on Rural Education and Small Schools) newsletters cover such topics as Federal legislation and rural development, the Congreso Nacional de Asuntos Colegiales, the Foxfire Project, career education, bilingual instruction, rural education, Native…

Chenowith, Virginia K., Ed.

341

REVISÃO DE ESTUDOS CLÍNICOS DE ENFERMAGEM: UTILIZAÇÃO DE PAPAÍNA PARA O TRATAMENTO DE FERIDAS  

Microsoft Academic Search

RESUMO: RESUMO: RESUMO: RESUMO: RESUMO: A papaína tem sido utilizada pelo enfermeiro para o tratamento de diversas feridas. No entanto, necessita-se de evidências que demonstrem seu efeito no desbridamento e aceleração da cicatrização. Esta investigação, por meio de revisão de literatura, teve como objetivo compilar estudos realizados por enfermeiros brasileiros ou graduandos de enfermagem na literatura nacional e indexados nos

Adriano Menis Ferreira; Kleber Aparecido de Oliveira; Luiz Carlos Vieira; James da Luz Rol

342

VIGENCIA DEL PENSAMIENTO MARTIANO EN EL CONTEXTO LATINOAMERICANO ACTUAL  

Microsoft Academic Search

Los países menos favorecidos de América Latina se resisten a las nuevas recetas económicas impuestas por las naciones más ricas, y se enfrentan a un peligroso contexto internacional asociado a notables cambios que están produciéndose en las concepciones sobre relaciones políticas internacionales, como parte de las acciones impulsadas por las principales potencias para estructurar un nuevo orden mundial acorde con

Eyedelkis Medina García; Ileana Jáñez Reyes; Maricel Batalla Barcelay; Ricardo Rey Riquenes

2012-01-01

343

B2. INFLUENCIA DEL RIEGO EN EL COMPORTAMIENTO DE TRES HÍBRIDOS TENERA DE PALMA ACEITERA (Elaeis guineensis Jacq.) DE TRES AÑOS DE EDAD. LA CONCORDIA-ESMERALDAS *. INFLUENCE OF IRRIGATION ON THE BEHAVIOR OF THREE HY BRIDS TENERA OF PALMA ACEITERA (Elaeis guineensis Jacq.) THE THREE YEARS AGO. LA CONCORCIA, ESMERALDAS  

Microsoft Academic Search

SUMMARY The influence of irrigation on the behavior of thre e hybrids (INIAP, IRHO and ASD) was studied in the Centro de Investigaciones en Pal ma (CIPAL) belongin to the Asociación Nacional de Cultivadores de Palma Aceitera (ANCUPA). The following variables were evaluated: estipete base diameter, p lant height, foliar crown diameter, foliar emission, sex ratio, foliar area and yield.

Víctor Hugo

344

Eficacia y seguridad de la terapia tópica con capsaicina 0,075% versus mentol 1%, en el tratamiento del prurito de la foliculitis eosinofílica asociada al virus de la inmunodeficiencia adquirida  

Microsoft Academic Search

ResumenObjetivo: ? Determinarlaeficaciayseguridaddelaterapiatópicaconcapsaicina ? 0,075% ? versus ? mentol ? 1% ? eneltratamientodelpruritodelafoliculitiseosinofílicaasociadaalvirusdela ? inmunodeficienciaadquirida ? (VIH). ? Diseño: ? Estudioclínicoaleatorizadoydobleciego. ? Lugar: ? ServiciosdeEnfermedadesInfecciosasyTropicales ? (SEIT) ? yDermatología, ? HospitalNacional ? DosdeMayo, ? Lima, ? Perú. ? Participantes: ? Pacientesconfoliculitiseosinofílicaasociadaal ? VIH. ? Intervenciones: ? Lamuestraestuvoconstituidapor ? 40 ? pacientesconfoliculitiseosinofílica ? asociadaalVIH, ? quienesfuerondistribuidosmediantemuestreoaleatoriosistemáticoendos ? grupos: ? elgrupo ?

Carlos Galarza; Willy Ramos; Humberto Chía; Gerardo Ronceros; Jesús Santiani; Ericson Gutiérrez; Marcos Ñavincopa; María Vilcarromero; Jack Ávila; Jorge Hancco; Deny Gámez

2007-01-01

345

Journal of Environmental Radioactivity special issue: international topical conference on Po and radioactive Pb isotopes.  

PubMed

An international conference on polonium (Po) and radioactive isotopes was held in Seville Spain, 26-28 October 2009 at the Centro Nacional de Aceleradores. It was attended by 138 participants from 38 different countries. The sessions covered all aspects on Po and lead (Pb) such as radiochemistry, terrestrial and marine radioecology, kinetics, sedimentation rates, atmospheric tracers, NORM industries and dose assessment. PMID:20889244

Holm, Elis; Garcia-Tenorio, Rafael

2010-10-25

346

Land use change in the Baja California Peninsula, Mexico  

Microsoft Academic Search

This work analyzes the land use change in the Baja California Peninsula, at the level of vegetation types. The time period analyzed was 1978 (Serie I de INEGI) to 2000 (Inventario Nacional Forestal) at 1:250 000 scale. The spatial analyses were carried out in a GIS environment to identify the changes in the period. A transition matrix was elaborated and

Fernando Antonio; Rosete Vergés; José Luis Pérez Damián; Gerardo Bocco

347

ALIPHATIC, POLYCYCLIC AROMATIC HYDROCARBONS AND NITRATED-POLYCYCLIC AROMATIC HYDROCARBONS IN PM10 IN SOUTHWESTERN MEXICO CITY  

Microsoft Academic Search

A sampling campaign of airborne particles ? 10 ? m (PM10) was carried out from February to April of 2004 at the Universidad Nacional Autónoma de México in southwestern Mexico City. The average PM10 mass concentration was 51 ± 14 ? g m. Extracted organic matter was determined, with a mean of 6.5 ± 1.7 ? g m, which represents

Hugo Saldarriaga; Rafael Villalobos; Gisela Solano; Omar Amador; Roberto Gaspariano; Ricardo Palma; Zenaida Munive

2008-01-01

348

The evolution of breast cancer mortality and morbidity in Spain (1977–1988)  

Microsoft Academic Search

A study of breast cancer mortality and cancer morbidity has been carried out in Spain recently for the period 1977–1988, covering the population of the 17 Autonomous Communities and 50 provinces of the country. Data was obtained from INE, Instituto Nacional de Estadistica (National Institute of Statistics), with age standardization using the indirect method. The different Autonomous Communities and provinces

M. M. Morales Suarez-Varela; A. Llopis González; E. Soto Pinchel; M. C. Jiménez López

1996-01-01

349

Organization of a Tumor Bank: The Experience of the National Cancer Institute of Mexico  

Microsoft Academic Search

A tumor bank (TB) is an ordered collection of neoplastic samples, normal tissue, and\\/or fluids preserved under optimal conditions, as well as storing patients’ clinical information. The objective of this article is to outline the planning and logistics necessary for the functioning of the Instituto Nacional de Cancerología (INCan) TB in Mexico City. For the planning and logistics of a

L. Ruíz-Godoy; A. Meneses-García; L. Suárez-Roa; V. Enriquez; R. Lechuga-Rojas; E. Reyes-Lira

2010-01-01

350

Trauma care systems in Spain  

Microsoft Academic Search

Trauma care systems in Spain are provided by the Nacional Health Service in a decentralized way by the seventeen autonomous communities whose process of decentralization was completed in January 2002. Its organisation is similar in all of them. Public sector companies of sanitary emergencies look after the health of citizens in relation to medical and trauma emergencies with a wide

E. Queipo de Llano; A. Mantero Ruiz; P. Sanchez Vicioso; A. Bosca Crespo; J. L. Carpintero Avellaneda; M. V. de la Torre Prado

2003-01-01

351

PRODUÇÃO INTEGRADA DE FRUTAS PIF e a produção de Açaí (Euterpe oleracea Mart) no Estado do Pará: ameaças ou oportunidades?  

Microsoft Academic Search

Este trabalho, apoiado na dinâmica de crescimento do consumo de sucos naturais, como uma das bebidas esportivas associadas à imagem de produto saudável, suscita as questões relacionadas com a aplicação do PIF junto à produção do Açaí, visto a ampliação da aceitação desse produto nos mercados nacional e internacional. Está fundamentado na aplicação da legislação específica e seus pré-requisitos frente

Rubens Cardoso Da Silva; Paulo Cerqueira Dos Santos; Jose Sebastiao Romano De Oliveira; Maria Cristina Das Neves Silva; Ismael Matos Da Silva

2008-01-01

352

La política económica en el reinado de Alfonso XII: una década tranquila  

Microsoft Academic Search

Los ministros de Hacienda del reinado de Alfonso XII asumieron muchas decisiones adoptadas en el Sexenio democrático en los ámbitos de la política monetaria, fiscal y arancelaria. Entre ellas la instauración de la peseta como moneda nacional, la concesión del monopolio de emisión de billetes al Banco de España, la rectificación de la Hacienda revolucionaría llevada a cabo entre 1872

Miguel Martorell Linares

2003-01-01

353

Potency evaluation of rabies vaccine for human use: The impact of the reduction in the number of animals per dilution  

Microsoft Academic Search

In order to evaluate the effects of reducing the number of animals used in the NIH mouse protection test for potency determination of inactivated rabies vaccines for human use, a retrospective study of the results obtained in the Brazilian National Control Laboratory, Instituto Nacional de Controle de Qualidade em Saúde (INCQS), was performed, comprising 214 vaccine lots. The INCQS Standard

Wlamir Corrêa de Moura; Humberto Pinheiro de Araujo; Pedro Hernan Cabello; Phyllis Catharina Romijn; José Paulo Gagliardi Leite

2009-01-01

354

IHY activities in Mexico and the Virtual Earth-Sun Observatory (VESO)  

Microsoft Academic Search

We present a report on the IHY activities in Mexico in 2007. These activities were coordinated by the Instituto de Geofisica of the Universidad Nacional Autonoma de Mexico (UNAM) which include three international scientific conferences, a Latin American space physics school, outreach activities in some cities in the country, and two museum exhibitions. As a part of the scientific projects

Americo Gonzalez-Esparza; Jose Francisco Valdes-Galicia; Gerardo Cifuentes-Nava; Guadalupe Cordero; Rogelio A. Caballero-Lopez; Esteban Hernández-Quintero; Alejandro Lara

2008-01-01

355

Final Report: Sulfate Sampling Program. Northwest Sector of the Rapel River Basin.  

National Technical Information Service (NTIS)

This study was funded by the U.S. Trade and Development Agency on behalf of the Comision Nacional Del Medio Ambiente (CONAMA). The main purpose of the report is to assess the quality of surface waters in the Rapel River Basin, identify sources of pollutio...

1994-01-01

356

Deforestation and Malaria in Mâncio Lima County, Brazil  

Microsoft Academic Search

Malaria is the most prevalent vector-borne disease in the Amazon. We used malaria reports for health districts collected in 2006 by the Programa Nacional de Controle da Malária to determine whether deforestation is associated with malaria incidence in the county (município) of Mâncio Lima, Acre State, Brazil. Cumulative percent deforestation was calculated for the spatial catchment area of each health

Sarah H. Olson; Ronald Gangnon; Guilherme Abbad Silveira; Jonathan A. Patz

2010-01-01

357

Los Estados Unidos y la República de Chile se unen para combatir el cáncer  

Cancer.gov

Una nueva alianza entre el Instituto Nacional del Cáncer de los Estados Unidos y el Ministerio de Salud de la República de Chile, tiene el propósito de acelerar el avance contra el cáncer en la población hispana en los Estados Unidos y en América Latina.

358

'In Vivo' Dosimetry in High Dose Rate Brachytherapy for Cervical Cancer Treatments  

SciTech Connect

In this prospective study, rectal dose was measured 'in vivo' using TLD-100 crystals (3x3x1 mm{sup 3}), and it has been compared to the prescribed dose. Measurements were performed in patients with cervical cancer classified in FIGO stages IB-IIIB and treated with high dose rate brachytherapy (HDR BT) at the Instituto Nacional de Cancerologia (INCan)

Gonzalez-Azcorra, S. A.; Ruiz-Trejo, C.; Buenfil, A. E. [Instituto de Fisica, UNAM, A.P. 20-364, Mexico 01000 D.F. (Mexico); Mota-Garcia, A.; Poitevin-Chacon, M. A.; Santamaria-Torruco, B. J.; Rodriguez-Ponce, M.; Herrera-Martinez, F. P. [Instituto Nacional de Cancerologia, Mexico 14000 D.F. (Mexico); Gamboa de Buen, I. [Instituto de Ciencias Nucleares, UNAM, A.P. 70-543, Mexico 04510 D.F. (Mexico)

2008-08-11

359

On the Convenience of Using a Computer Simulation to Teach Enzyme Kinetics to Undergraduate Students with Biological Chemistry-Related Curricula  

ERIC Educational Resources Information Center

|Enzyme kinetics is a difficult subject for students to learn and for tutors to teach. During the practicals included in the biochemical courses at the Faculty of Chemistry of Universidad Nacional Autonoma de Mexico, we found that the students acquire good training in the calculations to obtain kinetic parameters such as K[subscript m],…

Gonzalez-Cruz, Javier; Rodriguez-Sotres, Rogelio; Rodriguez-Penagos, Mireya

2003-01-01

360

Aetiology of Bovine Abortion in Argentina  

Microsoft Academic Search

Necropsies were performed on 354 fetuses from dairy and beef herds submitted from 1994 to 2000 to the diagnostic laboratories at Instituto Nacional de Tecnología Agropecuaria, Balcarce, Argentina. Samples from the fetuses were examined for pathogenic organisms and processed for microscopic examination. An aetiological diagnosis was made for 161 (45.5%) of the fetuses. No diagnosis was made for 193 (54.5%)

C. M. Campero; D. P. Moore; A. C. Odeón; A. L. Cipolla; E. Odriozola

2003-01-01

361

Ethnic Succession in a Highland Chiapas Community.  

ERIC Educational Resources Information Center

|Since the 1950s, ethnic relations in Tenejapa (Chiapas, Mexico) have shifted toward greater equality and less antagonism between formerly dominant mestizos and formerly dominated "indigenas" (Maya Indians). An important cause is the long-term promotion of indigenous education by a national agency, Instituto Nacional Indigenista, imparting to…

Whitmeyer, Joseph M.

1997-01-01

362

Internal parasites of free-ranging guanacos from Patagonia  

Microsoft Academic Search

In the winter of 2000, a greater than 80% reduction in the guanaco population located in Cabo Dos Bah??as Wildlife Reserve, Chubut, Argentina, was evident due to massive mortality attributed to starvation. Twelve guanacos were necropsied and samples were analyzed at the Parasitology Laboratory of Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral. Fecal analysis revealed developmental stages of Nematodirus

P. M. Beldomenico; M. Uhart; M. F. Bono; C. Marull; R. Baldi; J. L. Peralta

2003-01-01

363

Scientific ballooning in Brazil  

Microsoft Academic Search

We present an overview of the scientific ballooning activities that took place in Brazil over the past 30 years as well as the current ongoing efforts in the area. We also briefly describe the balloon launching facility that exists at the Instituto Nacional de Pesquisas Espaciais (National Institute for Space Research) — INPE. Up to now, over 100 scientific balloon

R. Corrêa; E. Rinke; J. O. Fernandes; T. Villela

2002-01-01

364

Alternatives for the Training of Skilled Industrial Labor in Sao Paulo, Brazil. Program of Studies in Non-Formal Education, Supplementary Series. Paper No. 1.  

ERIC Educational Resources Information Center

|The study deals with the development of skilled industrial manpower in Sao Paulo, Brazil, and with the Federal government's SENAI (Service Nacional de Aprendizagem Industrial) industrial apprenticeship and trainign program. An analysis of six variables among lathe setter-operators showed that: present work situations among the operators varied…

Lukomski, Michael

365

SOBRE O VALOR ECONÔMICO DO SISTEMA DE IDENTIFICAÇÃO ANIMAL DOS EUA (NAIS): NOTÍCIAS A RESPEITO DO MAU DA VACA LOUCA AFETAM O CONSUMO DE CARNES?  

Microsoft Academic Search

Esse artigo investiga os efeitos de notícias a respeito do mau da vaca louca ou BSE sobre o consumo das carnes bovina, suína e de aves nos EUA. Presume-se que o sistema nacional de identificação animal (NAIS) poderia em tese atenuar a percepção de risco dos consumidores sobre contrair o mau da vaca louca ao consumir carnes. Sistemas de equações

Moises de Andrade Resende Filho; Brian L. Buhr

2008-01-01

366

STATISTICAL RESEARCH AND CONSULTING IN UNIVERSITIES FROM DEVELOPING COUNTRIES: THE COLOMBIAN CASE  

Microsoft Academic Search

This paper focuses on describing the experience of statistical researchers and consultants of the Department of Mathematics and Statistics, faculty and students, and of researchers who are not statisticians, at the Universidad Nacional de Colombia. An analysis is made of the statistics programs of study including consulting activities, and of three surveys that were designed, distributed and analysed: one for

DAVID OSPINA; JORGE E. ORTIZ

367

Utilization of Computer Technology in the Third World: An Evaluation of Computer Operations at the University of Honduras.  

ERIC Educational Resources Information Center

|This report of the results of an evaluation of computer operations at the University of Honduras (Universidad Nacional Autonoma de Honduras) begins by discussing the problem--i.e., poor utilization of the campus mainframe computer--and listing the hardware and software available in the computer center. Data collection methods are summarized,…

Shermis, Mark D.

368

Nicaragua National Cement Company Modernization Project Definitional Mission.  

National Technical Information Service (NTIS)

The Compania Nacional Productora de Cemento (CANAL) requests the assistance of the U.S. Trade and Development Program (TDP) in the form of a grant to support an Engineering/Economic Feasibility Study. The study would address the requirements to increase C...

J. A. Pedison

1992-01-01

369

La política brasileña para los residuos sólidos urbanos. Los planteamientos de catadores y empresarios en sus páginas electrónicas  

Microsoft Academic Search

El gobierno brasileño señala la posibilidad de aprobar la política nacional para los residuos sólidos urbanos (PNRS). La propuesta del Proyecto de Ley 1991\\/07 está en trámite en la cámara de los diputados desde el año 1991. Los senadores mantuvieron una charla con los catadores, empresarios del reciclaje y empresarios de servicios de gestión de residuos sólidos urbanos para conocer

Fábio Fonseca Figueiredo

2008-01-01

370

Lo que los padres necesitan saber sobre el cáncer y la vacuna contra el VPH  

Cancer.gov

Lo que los padres necesitan saber sobre el cáncer y la vacuna contra el VPH  Por el Instituto Nacional del Cáncer  Nosotros podemos vacunar a nuestros hijos contra el virus de la poliomielitis, contra el sarampión y  contra la gripe. Más recientemente se ha puesto al alcance de los padres de familia una vacuna para que 

371

El impacto de la geografía sobre la riqueza: autocorrelación espacial, movilidad regional, esquemas convergentes y dinámica temporal del ingreso per cápita, en México  

Microsoft Academic Search

La necesidad de definir una visión estratégica del desarrollo en el nuevo entorno nacional ha generado un replanteamiento de los enfoques y métodos de la ciencia regional. Este nuevo enfoque se ha traducido en un amplio debate dentro del contexto de interpretación de las nuevas realidades y en la importancia de lo territorial. ¿Bajo qué condiciones se ordenan los patrones

Roberto Guerrero Compeán

2007-01-01

372

The real (war) economy of Angola  

Microsoft Academic Search

Diamonds feature in many recent analyses of the financial underpinnings of Angola's long-running civil war. Both lawful and illicit exports of diamonds gain attention for their significant roles in bolstering the finances of the Movimento Popular de Libertação de Angola (MPLA) regime and their União Nacional para a Indepêndencia Total de Angola (UNITA) opponents. Much of this attention focus- es

William Reno

373

(Short overview of the Mexican Society of Clinical Chemistry meetings)  

SciTech Connect

Organized and chaired session on instrument evaluation at the XIV Congreso Nacional De Quimica Clinica which is the National Meeting of the Mexican Society of Clinical Chemistry. In addition, I presented a paper on calibration at a Congress workshop and spoke on the impact of technology in a symposium on quality control.

Burtis, C.

1991-01-01

374

Depresión posparto: ¿se encuentra asociada a la violencia basada en género? Post partum depression: is it associated to gender based violence?  

Microsoft Academic Search

Introduction: Post partum depression and gender based violence are very common disorders in women; the importance of early diagnosis and prompt treatment is to avoid future consequences in women, newborns and the family. Objectives: To determine the association between post partum depression and gender based violence. Design: Exploratory cross-sectional. Place: Hospital Nacional Docente Madre Niño San Bartolome, Lima, Peru. Participants:

Juan Escobar; Percy Pacora; Nilton Custodio; Walter Villar

375

``In Vivo'' Dosimetry in High Dose Rate Brachytherapy for Cervical Cancer Treatments  

NASA Astrophysics Data System (ADS)

In this prospective study, rectal dose was measured ``in vivo'' using TLD-100 crystals (3×3×1 mm3), and it has been compared to the prescribed dose. Measurements were performed in patients with cervical cancer classified in FIGO stages IB-IIIB and treated with high dose rate brachytherapy (HDR BT) at the Instituto Nacional de Cancerología (INCan).

González-Azcorra, S. A.; Mota-García, A.; Poitevín-Chacón, M. A.; Santamaría-Torruco, B. J.; Rodríguez-Ponce, M.; Herrera-Martínez, F. P.; Gamboa de Buen, I.; Ruíz-Trejo, C.; Buenfil, A. E.

2008-08-01

376

Independent Qualification of the CIAU Tool Based on the Uncertainty Estimate in the Prediction of Angra 1 NPP Inadvertent Load Rejection Transient  

Microsoft Academic Search

The Code with - the capability of - Internal Assessment of Uncertainty (CIAU) is a tool proposed by the 'Dipartimento di Ingegneria Meccanica, Nucleare e della Produzione (DIMNP)' of the University of Pisa. Other Institutions including the nuclear regulatory body from Brazil, 'Comissao Nacional de Energia Nuclear', contributed to the development of the tool. The CIAU aims at providing the

Ronaldo C. Borges; Francesco DAuria; Antonio Carlos M. Alvim

2002-01-01

377

The Figure of the Enemy in Elizam Escobar's La Ficción  

Microsoft Academic Search

On April 4th, 1980, Puerto Rican artist Elizam Escobar was arrested along with other members of the Fuerzas Armadas de Liberación Nacional (FALN) in Evanston, lllinois. All the members of the FALN claimed to be combatants in an anticolonial struggle against the US government and were found guilty of seditious conspiracy against the government of the United States in a

Juan Carlos Rodríguez

2011-01-01

378

Leaders of Bibliographic Control– The Chilean Experience: Maria Teresa Sanz Briso-Montiano and Soledad Fernández-Corugedo  

Microsoft Academic Search

Two interviews provided the basis for this examination of the careers and contributions of Maria Teresa Sanz Briso-Montiano and Soledad Fernández-Corugedo, major figures in the development of bibliographic control in Chile. Sanz was instrumental in introducing the use of international cataloging standards; as Coordinator at the Biblioteca nacional de Chile, she reorganized technical services, promoted the use of automated library

Carolynne Myall; Elizabeth N. Steinhagen

2000-01-01

379

Estudio comparativo del autoconcepto en mujeres con esterilidad primaria y pérdida gestacional recurrente Comparative study of self-concept in women suffering from primary sterility and recurrent gestational loss  

Microsoft Academic Search

The aim of this work was to assess the impact sterility and recurrent gestational losses on women, through the use of the Tennessee Self-Concept Scale. Two samples of 120 women with no living children were chosen for our convenience,at the Instituto Nacional de Perinatología Isidro Espinosa de los Reyes. One sample of sterile patientes and another one of patients with

Guillermo A. González Campillo; Jorge Carreño Meléndez; Claudia Sánchez Bravo; Francisco A. Morales Carmona

2008-01-01

380

Georadar Archaeological Prospection at the Historical Center of the Merida City, Yucatan, Mexico  

Microsoft Academic Search

This paper shows the results of the georadar archaeological prospection carried out by the Laboratorio de Prospección Arqueologica from the Instituto de Investigaciones Antropologicas (IIA) of the Universidad Nacional Autonoma de Mexico (UNAM) verifing the archaeological and historical information recovered by the Departamento de Patrimonio Arqueologico y Natural del Municipio (DPANM) del Ayuntamiento de Merida en el Centro Histerico de

L. Barba; A. Ortiz; J. Blancas; J. Ligorred

2007-01-01

381

Qui sont les étudiants des trois universités lilloises ?  

Microsoft Academic Search

[spa] ¿ Quienes son los estudiantes de las très universidades de Lila ? - Depende fundalmente del nivel social ingresar en la Universidad? Tal como lo demostraron otros estudios efectuados a nivel nacional, parece ser que la condición social de los estudiantes desempena un papel fundamental para ingresar en la Universidad. En efecto, para unos cuantos estudiantes el concurrir a

Hubert Cukrowicz; Christian Baudelot

1975-01-01

382

Tendencias de mortalidad por traumatismos y envenenamientos en adolescentes. México, 1979-1997  

Microsoft Academic Search

Objective. To describe the external causes of death and mortality trends due to injuries and poisoning in Mexican adolescents, from 1979 to 1997. Material and Methods. This is a descriptive study of deaths occurring in Mexico from 1979 to 1997. Data were abstracted, coded, and ente- red in electronic format, by Instituto Nacional de Estadísti- ca, Geografía e Informática (National

Celis A; Gómez-Lomelí Z

2003-01-01

383

On the Convenience of Using a Computer Simulation to Teach Enzyme Kinetics to Undergraduate Students with Biological Chemistry-Related Curricula  

ERIC Educational Resources Information Center

Enzyme kinetics is a difficult subject for students to learn and for tutors to teach. During the practicals included in the biochemical courses at the Faculty of Chemistry of Universidad Nacional Autonoma de Mexico, we found that the students acquire good training in the calculations to obtain kinetic parameters such as K[subscript m], V[subscript…

Gonzalez-Cruz, Javier; Rodriguez-Sotres, Rogelio; Rodriguez-Penagos, Mireya

2003-01-01

384

Evaluación bacteriológica de la leche y queso de cabra distribuidos en el Area Metropolitana de San José, Costa Rica  

Microsoft Academic Search

RESUMEN. En los últimos años, se ha dado en Costa Rica y a nivel mundial, una creciente producción, industrialización y consumo de la leche de cabra y sus derivados. No obstante, a nivel nacional no se ha realizado una caracterización de estos, por lo que el objetivo de este estudio es determinar las características microbiológicas de la leche y el

Viviana Araya; Leslie Gallo; Carlos Quesada; Carolina Chaves; María Laura Arias

2008-01-01

385

DISTRIBUIÇÃO DE RENDA E POBREZA NO BRASIL NO PERÍODO DE 1995 A 1999  

Microsoft Academic Search

PALAVRAS-CHAVE: Distribuição de renda; Pobreza; Decomposição; Elasticidade e Amostra complexa. Resumo - Esse artigo investiga a evolução da distribuição de renda e da pobreza no Brasil durante o período 1995-1999 levando em conta todas as características do plano amostral complexo da Pesquisa Nacional por Amostra de Domicílios (peso, estrato e unidade primária). Adicionalmente, a distribuição de renda do estrato que

Patrick Wöhrle Guimarães

386

Prevalence of temporary social security benefits due to respiratory disease in Brazil* Prevalência de benefícios de seguridade social temporários devido a doença respiratória no Brasil  

Microsoft Academic Search

Objective: To determine the prevalence of temporary social security benefits due to respiratory disease granted to employees, as well as the number of lost workdays and costs resulting from those in Brazil between 2003 and 2004. Methods: Cross-sectional study using data obtained from the Unified System of Benefits of the Brazilian Institute of Social Security (INSS, Instituto Nacional de Seguro

2009-01-01

387

Model to recover the Colombian cultural identity based on ICT strategy  

Microsoft Academic Search

This document is part of a research done from Master Science in Telecommunications Engineering program of the Universidad Nacional de Colombia, that links three strategies for interconnection which aim is to rescue the culture in the country from the schools. The current document shows a development model to be incorporated in Colombian education and describes three fundamental axes for its

J. R. Cano

2010-01-01

388

Polarization, the Bargmann transform and the harmonic oscillator  

NASA Astrophysics Data System (ADS)

The definition of the polarization for the quantum harmonic oscillator system is analysed in a group-theoretical scheme. Permanent address: Instituto de Investigación en Matemáticas Aplicadad y en Sistemas, Universidad Nacional Autónoma de México, Apartado Postal 20-726, México 20 D.F., México.

Aldaya, V.; de Azcárraga, J. A.; Wolf, K. B.

1982-08-01

389

The role of Amazonian rivers for wintering ospreys (Pandion haliaetus): clues from North American band recoveries in Brazil between 1937 and 2006  

Microsoft Academic Search

In this paper we describe band-recovery data from 90 ospreys (Pandion haliaetus), banded in North America and recovered in Brazil between 1937 and 2006. Data were obtained from the Bird Banding Laboratory (US Geological Survey, USA) and from the Centro Nacional de Pesquisa para Conservação das Aves Silvestres (IBAMA, Brazil). The majority of ospreys were banded near the coast in

Luiz A. M. Mestre; Richard O. Bierregaard Jr

2009-01-01

390

The Yale\\/San Juan Southern Proper Motion Program  

Microsoft Academic Search

The SPM is based on photographic plates taken at our observatory at El Leoncito, Argentina and will yield absolute proper motions and positions to magnitude B 19 for approximately 1 million stars south of declination -20 degrees. The SPM is a joint program between the Yale Southern Observatory and the Universidad Nacional de San Juan, Argentina. The SPM Catalog 2.0

W. F. van Altena; T. M. Girard; I. Platais; V. Kozhurina-Platais; J. Ostheimer; C. E. Lopez; R. A. Mendez

1999-01-01

391

NSF-CNPq Collaborative Research Opportunities for FY 1998 (CISE)  

NSDL National Science Digital Library

This program, a joint venture of the National Science Foundation (NSF) and the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) of Brazil, aims to increase collaborative research between scientists in Brazil and the United States. Funding is available for research, workshops, and visiting faculty positions. Complete submission details are available at the site. Proposals are due the first Friday in October.

392

La estrategia que salvó la imagen de un alcalde. El desalojo de los niños del Colegio Picacho? The srategy that saved a mayor's image. The violent eviction of the children os de Picacho School  

Microsoft Academic Search

Resumen: El desalojo de los alumnos del Colegio Picacho de una sala aneja a la alcaldía de Vigo, en la que se habían encerrado para reivindicar monitores de gimnasia y que provocó el paso por el hospital de 15 niños, algunos de los cuales permanecieron tres días en observación, fue un suceso cargado de emoción y con repercusión nacional que

Félix Blanco González

2009-01-01

393

Characterization of cocoa butter extracted from Criollo cultivars of Theobroma cacao L  

Microsoft Academic Search

Theobroma cacao L. cultivars grown in Venezuela are internationally, the most appreciated, due to their excellent flavor and aroma. The main objective of the present study was to determine the physical and chemical characteristics of cocoa butter extracted from different cultivars of Criollo cacao belonging to the germplasm bank of the Fondo Nacional de Investigaciones Agropecuarias (National Foundation for Agricultural

Rigel Liendo; Fanny C Padilla; Agricia Quintana

1997-01-01

394

Framing Controversies: Television and the 2002 Presidential Election in Brazil  

Microsoft Academic Search

This article investigates the role of television in the first round of the 2002 Brazilian presidential election. Content analysis and survey data are used to show that TV news and political advertising led to important framing effects. On the one hand, exposure to the most watched newscast, TV Globo's Jornal Nacional, led voters to support the interpretive frame that was

Mauro P. Porto

2007-01-01

395

Relationship Between Precipitation Chemistry and Meteorological Parameters at a Urban Site in the North of Queretaro State  

Microsoft Academic Search

A total of 50 wet precipitation samples were collected per event at the Juriquilla site from mid-May 2009 to the end of May 2010. The Juriquilla sampling site was located on the roof of the Geoscience Building, Universidad Nacional Autónoma de México, at the Juriquilla Campus in the city of Querétaro located at 20°41'58\\

R. García Martínez; G. Hernández; S. Solis; M. D. Torres; H. Padilla; A. Báez

2010-01-01

396

Incidencias de la Economía China en la Demanda de Bienes Mundial  

Microsoft Academic Search

El sector privado nacional también creó nuevas empresas. Una gran cantidad de incentivos de los gobiernos central y locales (como exenciones de impuestos y bajos precios de la tierra y los servicios públicos) ayudaron a mantener bajos los costos de producción y altas las utilidades para ser reinvertidas en nuevas expansiones. Puesto que los controles del capital y el subdesarrollo

Luis Oliveros

2007-01-01

397

Efecto protector del Aloe vera (sábila) en lesiones gástricas inducidas con etanol en ratas Protective effect of Aloe vera in injuries gastric  

Microsoft Academic Search

Objective: To determine the cytoprotective effect of Aloe Vera (Sabila) on gastric mucosa and compare them with those produced by sucralfate in the experimentation animals. Design: Experimental study. Setting: San Marcos University Institute of Pathology. Lima, Perú. Materials: thirty six albino female rats were evaluated, of the specie Ratus norvegicus strain Holtzman of Instituto Nacional de Salud, Lima-Perú Interventions: Following

Ronald Arce; Janet Molina-Ordóñez; Fiorella Morán; José Moreno-Lozano

2007-01-01

398

Cultural Dimensions of Digital Library Development, Part II: The Cultures of Innovation in Five European National Libraries (Narratives of Development)  

ERIC Educational Resources Information Center

|This article presents the narrative accounts of the beginnings of digital library programs in five European national libraries: Biblioteca nacional de Portugal, Bibliotheque nationale de France, Die Deutsche Bibliothek, the National Library of Scotland, and the British Library. Based on interviews with policy makers and developers of digital…

Dalbello, Marija

2009-01-01

399

Cultural Dimensions of Digital Library Development, Part I: Theory and Methodological Framework for a Comparative Study of the Cultures of Innovation in Five European National Libraries  

ERIC Educational Resources Information Center

|This study examines the influence of culture on digital libraries of the first wave. The local cultures of innovation of five European national libraries (Biblioteca nacional de Portugal, Bibliotheque nationale de France, Die Deutsche Bibliothek, the National Library of Scotland, and the British Library) are reconstructed in case histories from…

Dalbello, Marija

2008-01-01

400

Lifelines-Pancreatic-Cancer-SPA-2013  

Cancer.gov

LOS HISPANOS Y EL CÁNCER DE PÁNCREAS: COSAS PARA SABER por el Instituto Nacional del Cáncer Una de las causas principales de muerte relacionadas con el cáncer en los hispanos o latinos de los Estados Unidos es una enfermedad poco común pero con frecuencia

401

An average\\/deprivation\\/inequality (ADI) analysis of chronic disease outcomes and risk factors in Argentina  

Microsoft Academic Search

BACKGROUND: Recognition of the global economic and epidemiological burden of chronic non-communicable diseases has increased in recent years. However, much of the research on this issue remains focused on individual-level risk factors and neglects the underlying social patterning of risk factors and disease outcomes. METHODS: Secondary analysis of Argentina's 2005 Encuesta Nacional de Factores de Riesgo (National Risk Factor Survey,

Fernando G De Maio; Bruno Linetzky; Mario Virgolini

2009-01-01

402

Crisis y Respuestas: Tarifa Social en Agua y Saneamiento en Argentina  

Microsoft Academic Search

En un trabajo reciente del Banco Mundial, se procesó una encuesta sobre consumo de servicios públicos en la Argentina, y se procesó, y algunos resultados se aprovechan en este artículo. La hipótesis del trabajo es que es posible diseñar un esquema nacional de subsidio al uso del servicio, con un conjunto relativamente pequeño de indicadores objetivos de pobreza estructural y

Diego Petrecolla; Gustavo Ferro

2003-01-01

403

LA RELACIÓN ENTRE LAPOLÍTICA PARA PROMOVER EL DESARROLLO DE LAS MIPYMES EN COLOMBIA Y LOSMODELOS DE DESARROLLO E INDUSTRIALIZACIÓN  

Microsoft Academic Search

Este trabajo busca evidencia en la literatura sobre la posible relación existente en Colombia entre los instrumentos de política de promoción de micro, pequeñas y medianas empresas (MIPYMES) y los modelos de desarrollo económico e ndustrialización. Por lo tanto, se analizan los planes de desarrollo económico y se estudian las leyes y documentos aprobados por el Consejo Nacional de Política

MARÍA TERESA VICTORIA

2003-01-01

404

Potential threat of malaria epidemics in a low transmission area, as exemplified by São Tomé and Príncipe  

Microsoft Academic Search

BACKGROUND: Plasmodium falciparum is the major cause of malaria infection in the island of São Tomé, in the Republic of São Tomé and Príncipe (STP), with an incidence of 40 - 50% before 2004. Since 2004, through the coordination of the Ministry of Health of STP and their Centro Nacional de Endemias (CNE), an integrated malaria control programme has been

Pei-Wen Lee; Chia-Tai Liu; Virgilio E do Rosario; Bruno de Sousa; Herodes Sacramento Rampao; Men-Fang Shaio

2010-01-01

405

CONTEXTOS E PERCEPÇÕES DE RACISMO NO QUOTIDIAN O  

Microsoft Academic Search

Resum o Em Portugal há poucos estudos sobre o racismo e ainda menos sobre o modo como o racismo é percepcionado por parte daqueles que dele são mais habitualmente vítimas. Neste artigo, que se baseia em evidência empírica resultante de um inquérito nacional e de entrevistas em profundidade a migrantes guineenses, analisam-se as percepções de racismo desses migrantes, tal como

Fernando Luís Machado

406

Lo multicultural como mitología y como coartada del racismo  

Microsoft Academic Search

La noción de cultura en tanto que conjunto de caracteres de un colectivo nacional, tribal o religioso, ha venido a reemplazar por equivalencia la noción de raza, desprestigiada por la experiencia nazi. Pero su funcionamiento objetivo es el mismo. Raza, nación y cultura son constructos nacidos a la sombra del Romanticismo, de la reacción antiiluminista. El multiculturalismo es la ideología

Horacio Vázquez Rial

2007-01-01

407

Columbus's Legacy, Conquest or Invasion? A Guatemalan Example of Counterhegemonic Teacher Practice and Curriculum.  

ERIC Educational Resources Information Center

|Evidence is presented that demonstrates the projection in some school settings of nuanced interpretations of the historical events and meanings related to 1492 and to the subsequent Spanish settlement of the Americas. In particular, the Maya language-Spanish language bilingual curriculum (Programa Nacional de Educacion Bilingue, PRONEBI) and Maya…

Wilhelm, Ronald W.

408

LOS CAMBIOS EN EL CONSUMO ALIMENTARIO: REPERCUSIÓN EN LOS PRODUCTOS MEDITERRÁNEOS  

Microsoft Academic Search

Introducción El consumo de productos alimentarios en España se ha modificado notablemente en las últimas décadas. Con datos de la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO), los niveles de consumo de energía en España son similares al promedio de los países desarrollados (3.470 calorías), pero los niveles de consumo de proteína y de grasa

José María García Álvarez-Coque; Teresa López-García Usach

409

Immigrant Wages in the Spanish Labour Market: Does the Origin of Human Capital Matter?  

Microsoft Academic Search

The aim of this paper is to analyse the role played by the different components of human capital in the wage determination of recent immigrants within the Spanish labour market. Using microdata from the Encuesta Nacional de Inmigrantes 2007, the paper examines returns to human capital of immigrants, distinguishing between human capital accumulated in their home countries and in Spain.

Esteve Sanromá; Raul Ramos; Hipólito Simón

2009-01-01

410

Autoevaluación de formación en habilidades de entrevista, relación médico paciente y comunicación en médicos graduados  

Microsoft Academic Search

Abstract Objective: To assess the perception of medical graduates in regards to their training in medical interview, physician-patient relationship and communication skills. Materials and Methods: Applicants to a 2005-residencypost at the Universidad Nacional Mayor de San Marcos participated in the study. The questionnaire was designed adapting three instruments. Validity and reliability studies were carried out. Results: A total of 917

Cecilia Sogi; Salomón Zavala; Miguel Oliveros; Carlos Salcedo

2006-01-01

411

Under the Shadow of the Dictatorship: Comics and Culture During the Process of National Re organization  

Microsoft Academic Search

In 1976, the military took power. The dictatorship's rule would prove a turning point in Argentine history. However, military coups were old news. Since 1930 Argentina had undergone five interruptions of democracy by military takeovers. However, the genocide carried out during the Proceso de Reorganización Nacional (Process of National Reorganization) was unprec - edented. The actions undertaken by the governing

Ernesto Torres; Giulia Luisetti

1976-01-01

412

Apprenticeship in Latin America: The INACAP Program in Chile. A Case Study. Occasional Paper #6.  

ERIC Educational Resources Information Center

The development of apprenticeship programs in several Latin American countries was investigated with a focus on the results of an industrial apprenticeship program in Santiago, Chile. The program studied was the Instituto Nacional de Capacitacion Profesional (INACAP), the national vocational training institute of Chile. The purpose of the study…

Corvalan-Vasquez, Oscar E.

413

Tendencies toward the Adult Educator Profession in Latin America: An Exploratory, Comparative, and Participatory Study.  

ERIC Educational Resources Information Center

To obtain information on adult educator education in Latin America, two approaches were used: (1) data collected via e-mail or through the website of the Universidad Pedagogica Nacional de Mexico and (2) interviews with directors, coordinators, teaching staff, and students in six teacher education programs in Mexico, Brazil, Argentina, and…

Goerne, Juan Jose Madrigal

414

Youth transition from school to work in Spain  

Microsoft Academic Search

Using a data set drawn from the Encuesta Socio-Demográfica conducted by the Instituto Nacional de Estad??stica in 1991, we analyze the labor market entrance of Spanish school leavers and the match between education and work at the early stages of working life. The empirical evidence shows that human capital exerts a strong influence on the duration of unemployment. With regard

Gérard Lassibille; Luc??a Navarro Gómez; Isabel Aguilar Ramos; Carolina de la O Sánchez

2001-01-01

415

PREFACE: 14th Latin American Workshop on Plasma Physics (LAWPP 2011)  

NASA Astrophysics Data System (ADS)

These proceedings present the written contributions from participants of the Latin American Workshop on Plasma Physics (LAWPP), which was held in Mar del Plata, Argentina, on 20-25 November 2011. This was the 14th session of the series of LAWPP biennial meetings, which started in 1982. The five-day scientific program of LAWPP 2011 consisted of 32 talks and various poster sessions, with the participation of 135 researchers from Argentina, Brazil, Canada, Chile, Colombia, Mexico, Puerto Rico, USA, Venezuela, as well as others from Europe and Asia. In addition, a School on Plasma Physics and a Workshop on Industrial Applications of Plasma Technology (AITP) were organized together with the main meeting. The five-day School held in the week previous to the meeting was intended for young scientists starting their research in Plasma Physics. On the other hand, the objective of the AITP Workshop was to enhance regional academic and industrial cooperation in the field of plasma assisted surface technology. Topics addressed at LAWPP 2011 included space plasmas, dusty plasmas, nuclear fusion, non-thermal plasmas, basic plasma processes, plasma simulation and industrial plasma applications. This variety of subjects is reflected in these proceedings, which the editors hope will result in enjoyable and fruitful reading for those interested in Plasma Physics. It is a pleasure to thank the Institutions that sponsored the meeting, as well as all the participants and collaborators for making this meeting possible. The Editors Luis Bilbao, Fernando Minotti and Hector Kelly LAWPP participants Participants of the 14th Latin American Workshop on Plasma Physics, 20-25 November 2011, Mar del Plata, Argentina International Scientific Committee Carlos Alejaldre, Spain María Virginia Alves, Brazil Ibere Caldas, Brazil Luis Felipe Delgado-Aparicio, Peru Mayo Villagrán, Mexico Kohnosuke Sato, Japan Héctor Kelly, Argentina Edberto Leal-Quirós, Puerto Rico George Morales, USA Julio Puerta, Venezuela Leopoldo Soto, Chile Michael Tendler, Sweden Carlos Varandas, Portugal Henry Riascos, Colombia Ivan Vargas-Blanco, Costa Rica Local Organizing Committee Luis Bilbao (Chairman) Fernando Minotti (Vice-Chairman) Luis Bernal, UNMDP Alejandro Clausse, PLADEMA-CNEA Graciela Gnavi, INFIP, CONICET-UBA Fausto Gratton, INFIP, CONICET-UBA Diana Grondona, INFIP, CONICET-UBA Héctor Kelly, INFIP, CONICET-UBA Adriana Márquez, INFIP, CONICET-UBA María Milanese, UNCPBA César Moreno, INFIP, CONICET-UBA Sponsors Instituto de Física del Plasma (INFIP) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Comisión Nacional de Energía Atómica (CNEA) Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT) Centro Latino-Americano de Física (CLAF) Universidad Nacional de Mar del Plata (UNMP) Universidad Nacional del Centro de la Provincia de Buenos Aires (UNICEN) Academia Nacional de Ciencias de Buenos Aires (ANCBA) Conference poster

Bilbao, Luis; Minotti, Fernando; Kelly, Hector

2012-06-01

416

Observations about chemical composition of aerosols in the Brazilian Amazon region - Case study: Biomass burning in the subequatorial Amazon region  

NASA Astrophysics Data System (ADS)

The study was carried out in two cities in the Brazilian Amazon region, Tangará da Serra (14 ° 37'10 "S, 57 ° 29'09" W, 427 m asl), located in a transition area between the Amazon biome and the Cerrado and has the characteristics of urban area in Amazon region; and Alta Floresta (9 ° 52 '32 "S, 56 ° 5' 10" W, 283 m asl) situated in the extreme north of the state of Mato Grosso (MT), both in the subequatorial Amazon region. Tangara da Serra has the largest production of sugar cane in the subequatorial Amazon region. They are located 800 km from each other. These two regions are inserted in a region with typical cycles of drought and rain that alter air pollution levels, and lies in the dispersion path of the pollution plume resulting from burnings in the Brazilian Amazon and pollution emanating from neighboring countries. Both cities have wet tropical climate with two well defined seasons: rainy summer (November to May) and dry winter (June to October). During the dry winter, biomass burnings are frequent in these regions. In 2008, the Department of the Environment has banned fires in the period from July 15 to September 15 throughout the State. In this study chemical characterization was performed for approximately 100 aerosol samples collected in each site during 2008. Fine and coarse aerosol samples collected in SFUs were analyzed by ion chromatography for determination of cations (Na+, K+, NH3+, Ca2+ and Mg2+), anions (SO42-, Cl- and NO3-) and organic acids (acetate and formiate) and also measures of black carbon (BC) (Aethalometer). The results showed that for both sites the average concentrations were quite similar for PM2.5 (16 µg/m3), PM10 (11 and 13 µg/m3) and black carbon (1.4 µg/m3 for PM2.5 and 1.6 µg/m3 for PM10). Sulfate was the predominant species in fine (45%) and coarse (26%) particles in both sites. The sulfate concentrations ranged from 0.01-1.92 µg/m3 in PM2.5 and 0.01-1.66 µg/m3 in PM10 in Tangará da Serra and 0.01-2.93 µg/m3 in PM2.5 and 0.01-0.55 µg/m3 in PM10 in Alta Floresta. The presence of high levels of sulfate is probably related to biomass burning. Although with fire control policies, it was observed that the concentrations of some marker species (PM2.5, BC, K+) increased two or more times by comparing the dry and rainy seasons. However, the averages of PM2.5, PM10, BC measured in this study were much lower than most other previous studies developed in the 90s. This indicates apparently that, although not as effective, control programs have generated some reduction in the levels of pollutants.

Gioda, A.; Monteiro, I. L.; Almeida, A. C.; Hacon, S. S.; Dallacort, R.; Ignotti, E.; Godoy, J. M.; Loureiro, A. L.; Morais, F.; Artaxo, P.

2012-04-01

417

Petrology, isotope characteristics, and K-Ar ages of the Maranha??o, northern Brazil, Mesozoic basalt province  

USGS Publications Warehouse

Northern Brazil contains remnants of Mesozoic flood basalts and hypabyssal rocks that were apparently emplaced during tectonism related to opening of the Atlantic Ocean. Analyses and new K-Ar ages reveal that this ???700x250 km Maranha??o province (5??-8??S) has low-Ti basalts (???1.1 wt% TiO2) in the western part that range about 160 to 190 Ma, and high-Ti basalts (3.4-4.4 wt% TiO2) in the eastern part about 115-122 Ma. Low-Ti basalt compositions are less evolved and have a smaller range, Mg# 62-56, than the high-Ti basalts, Mg# 44-33. General characteristics of the least evolved members of low- and high-Ti groups include, respectively, Zr 100 and 250 ppm, Sr 225 and 475 ppm, Ba 200 and 500 ppm, Nb 10 and 26 ppm, Y 29 and 36 ppm, La/Yb(n) 4.2 and 8.8, where La(n) is 30 and 90. Overall compositions resemble the low- and high-Ti basaltic rocks of the Mesozoic Serra Geral (Parana??) province in southern Brazil. The Maranha??o low-Ti basalts have more radiogenic Sr and Pb and higher ??18O than the high-Ti basalts. Respectively, low- vs high-Ti: e{open}Sr26-54 vs 15-18; 206Pb/204Pb=18.25-.78 vs 18.22-.24; and ??18O 8.9-12.6 vs 6.5-8.6. Nd isotopes overlap: e{open}Nd-1.6 to -3.8 vs -2.1 to -3. Ages, compositions, and isotopes indicate that the low- and high-Ti groups had independent parentages from enriched subcontinental mantle. However, both groups can be modeled from one source composition if low-Ti basalt isotopes reflect crustal contamination, and if the parentages for each group were picritic liquids that represent either higher (for low-Ti) or lower (for high-Ti) percentages of melting of that single source. When comparing Pb isotopes of Maranha??o and Serra Geral high-Ti basalts (uncontaminated) to evaluate the DUPAL anomaly, Maranha??o has Pb ??7/4=4.6-11, and Pb ??8/4=72-87; Serra Geral has Pb ??7/4=10-13, and Pb ??8/4=95-125. The small difference is not enough to conform to DUPAL contours, and is inconsistent with large-scale isotopic heterogeneity of mantle beneath Brazil prior to rifting of South America from Africa. Maranha??o low-Ti magmas probably relate to the opening of central North Atlantic, and high-Ti magmas to the opening of equatorial Atlantic. The proposed greater percentage of source melting for low-Ti basalts may reflect a Triassic-Jurassic hotspot, while lesser melting for high-Ti magmas may relate to Cretaceous decompressional (rifting) melting. ?? 1990 Springer-Verlag.

Fodor, R. V.; Sial, A. N.; Mukasa, S. B.; McKee, E. H.

1990-01-01

418

Santos Basin Geological Structures Mapped by Cross-gradient Method  

NASA Astrophysics Data System (ADS)

Introduction We mapped regional-scale geological structures localized in offshore zone Santos Basin, South-East Brazilian Coast. The region is dominated by transition zone from oceanic to continental crust. Our objective was to determine the imprint of deeper crustal structures from correlation between bathymetric, gravity and magnetic anomaly maps. The region is extensively studied for oil and gas deposits including large tectonic sub-salt traps. Our method is based on gradient directions and their magnitudes product. We calculate angular differences and cross-product and access correlation between properties and map structures. Theory and Method We used angular differences and cross-product to determine correlated region between bathymetric, free-air gravity and magnetic anomaly maps. This gradient based method focuses on borders of anomalies and uses its morphological properties to access correlation between their sources. We generated maps of angles and cross-product distribution to locate correlated regions. Regional scale potential fields maps of FA and MA are a reflection of the overlaying and overlapping effects of the adjacent structures. Our interest was in quantifying and characterizing the relation between shapes of magnetic anomalies and gravity anomalies. Results Resulting maps show strong correlation between bathymetry and gravity anomaly and bathymetry and magnetic anomaly for large strictures including Serra do Mar, shelf, continental slope and rise. All maps display the regional dominance of NE-SW geological structures alignment parallel to the shore. Special interest is presented by structures transgressing this tendency. Magnetic, gravity anomaly and bathymetry angles map show large correlated region over the shelf zone and smaller scale NE-SW banded structures over abyssal plane. From our interpretation the large band of inverse correlation adjacent to the shore is generated by the gravity effect of Serra do Mar. Disrupting structures including bathymetric anomaly generated by landslides responsible for smaller depth over continental rise has show strong inverse correlation with gravity anomaly and strong correlation with magnetic anomaly over continental rise. This indicates the influence of sedimentary deposits on deeper crustal structures. Methods and result are discussed.

Jilinski, P.; Fontes, S. L.

2011-12-01

419

Microfacies analysis of foraminifera rich sedimentary rocks from the Desert Plateau, central Egypt.  

NASA Astrophysics Data System (ADS)

Microfacies analysis on some samples from the Thebes Group have been carried on by means of thin sections. The study area is included in the Libyan Desert Plateau (central Egypt) at following coordinates N27° 36'30.58" E29° 44'58.34", near the biggest dune of Egypt, the Ghard Abu Muharik. Because of the round shape of the rocks and the desert patina on the surface they could easily be classified as the so called "Melonstones", which are located more southwards and mainly composed by stromatolites. On the contrary, the investigated samples show a completely different fauna and therefore have been separated from the "Melonstones". Even if shape and size are very similar and the desert patina covers all surfaces the same way the differences are impressive. To investigate the samples, two thin-sections have been prepared and analyzed at the microscope. The observed fauna is composed by: agglutinated benthic foraminifera (e.g., Dictyoconus egypticus), complex larger miliolids (e.g., Pseudolacazina cf. danatae, Fabularia sp.), alveolinids (Alveolina vredenburgi), green algae (Dasycladaceae), echinoids and corals. Because of the presence of symbionts bearing larger benthic foraminifera, which need light to feed photosymbionts, the rock was formed in a shallow water environment. With the abundant rock-building benthic foraminifera and calcareous algae the limestone shows a tendency to the packstone/wackestone facies. Based on the presence of Alveolina vredenburgi, the age of the samples can be estimate as lowermost Eocene belonging to the shallow benthic zone 5 (sensu Serra-Kiel et al., 1998). According the obtained data on stratigraphy and palaeoecology, a partial palaeoenvironmental reconstruction is possible for the Libyan Desert Plateau where outcrops are largely missing. Because of the round shape of the samples and the patina which covers them all around it can be assumed that they have been transported from longer distance. According to the geological map of the area and to the fauna observed in the sections, the source of the samples can be related to the Farafra Formation, which is characterized by white to grey alveolinid shallow water limestone. The closest outcrop belonging to this formation can be found around 50 kilometers westwards from the location where the samples were taken. Serra-Kiel J., Hottinger L., Caus E., Drobne K., Ferrà Ndez C., Jauhria.K., Less G., Pavlovec R., Pignatti J., Samsó J.M., Schaub H., Sirel E., Strougo A., Tambareau Y., Tosquella J., ZAKREVSKAYA E., 1998 - Larger Foraminiferal Biostratigraphy Of The Tethyan Paleocene And Eocene. Bull. Soc. géol. France, 169 (2): 281-299.

Karnitschar, C.; Briguglio, A.; Hohenegger, J.

2012-04-01

420

[Reproduction, sexuality and power: the struggles and disputes over abortion and contraception in Rio de Janeiro, 1890-1930].  

PubMed

This article examines the debate among physicians over abortion, from the turn of the nineteenth century through to the 1930s, especially in the Academia Nacional de Medicina (National Academy of Medicine). Considered a crime, abortion was seen as something that threatened the dominance of husbands over wives and the control over medical practice in relation to the female body. Midwives, seen as the propagators of the techniques of medical termination of pregnancy, were opposed as a serious threat to the established gender order. Ten theses of the Faculdade de Medicina do Rio de Janeiro were analyzed, as well as the bulletins of the Academia Nacional de Medicina and articles published in the Correio da Manhã and O Globo newspapers. PMID:23184238

Silva, Marinete Dos Santos

2012-11-27

421

The Aquarius Superclusters. II. Spectroscopic and Photometric Data  

NASA Astrophysics Data System (ADS)

We present spectroscopic and photometric data for 920 galaxies selected in 68 fields of the Aquarius Cluster Catalog. Typically, the 15 brightest candidate members with magnitudes in the range 16Nacional de Astrofísica (LNA); and Complejo Astronomico El Leoncito (CASLEO), operated under agreement between the Consejo Nacional de Investigaciones Científicas de la República Argentina and the National Universities of La Plata, Córdoba, and San Juan.

Caretta, César A.; Maia, Marcio A. G.; Willmer, Christopher N. A.

2004-12-01

422

Treatment of Spent Argentine Ion Exchange Resin Using Vitrification - Results of FY01 Testing at the Savannah River Technology Center  

SciTech Connect

Under the Science and Technology Implementing Arrangement for Cooperation on Radioactive and Mixed Waste Management (JCCRM), the Department of Energy (DOE) is helping to transfer waste treatment technology to international atomic energy commissions. In 1996, as part of the JCCRM, DOE established a collaborative research agreement with Argentina's Comision Nacional de Energia Atomica (CNEA). A primary mission of the CNEA is to direct waste management activities for Argentina's nuclear industry.

Crawford, C.L.

2002-08-14

423

(Surveying isolated diesel power stations in Guatemala)  

SciTech Connect

I travelled to Guatemala City, Guatemala, to lead a team of specialists to study the operating, administrative, and management efficiency of isolated diesel power plants, operated by Instituto Nacional de Electrificacion (INDE). The study is part of a global initiative managed jointly by the Agency for International Development and the World Bank. The power plants were audited, including INDE's largest isolated diesel station, and two, much smaller municipal and privately owned stations. I returned to Oak Ridge on February 22, 1990.

Waddle, D.B.

1990-02-26

424

(Survey of three isolated diesel power stations in Guatemala)  

SciTech Connect

I traveled to Guatemala City, Guatemala to participate with a team of specialists to study the operating, administrative, and management efficiency of isolated diesel power plants, operated by Instituto Nacional de Electrificacion (INDE). The study is part of a global initiative managed jointly by the Agency for International Development and the World Bank. The power plants were audited, including INDE's largest isolated diesel station, and two much smaller municipal and privately owned stations. I returned to the USA on February 20, 1990.

Chronowski, R.A.

1990-03-15

425

Magnetic resonance imaging compatibility test of a cranial prosthesis with titanium screws  

NASA Astrophysics Data System (ADS)

The follow-up of patients with skull prosthesis is necessary to provide adequate medical care. Skull prostheses for cranioplasty have been developed at the Faculty of Odontology of Universidad Nacional Autonoma de Mexico. We built a skull prosthesis phantom and tested for compatibility with standard magnetic resonance imaging procedures. Results showed full compatibility but susceptibility artefacts occurred due to titanium used to fix the prosthesis to the skull.

Jimenez, R.; Benavides, A.; Flores, D.; Hidalgo, S. S.; Solis, S. E.; Uribe, E.; Rodriguez, A. O.

2012-10-01

426

Diversity of Ullucus tuberosus (Basellaceae) in the Colombian Andes and notes on ulluco domestication based on morphological and molecular data  

Microsoft Academic Search

Ullucus tuberosus (common name ‘ulluco’) is a popular tuber crop of Andean highlands. Until now attention has been focused on ulluco from Bolivia,\\u000a Peru and Ecuador, but little is known about its diversity in Colombia. Thirty-six accessions of cultivated ulluco preserved\\u000a in the Gene Bank of the Universidad Nacional de Colombia were studied to assess the genetic diversity and spatial

Mauricio Parra-QuijanoSauris Panda; Sauris Panda; Nohra Rodríguez; Elena Torres

427

Mortality level, desired family size, and population increase  

Microsoft Academic Search

\\u000a Resumen  Aunque la explosión de la población en el mundo ha sido creada por una disminución en las tasas de mortalidad, paradójicamente\\u000a una mayor declinación en esias tasas en las naciones menos desarrolladas, Puede ser una ayuda invalorable para reducir la\\u000a actual tasa de crecimiento poblacional en el mundo.\\u000a \\u000a \\u000a En este trabajo se presentan los resultados de varios modelos simulados en

David M. Heer; Dean O. Smith

1968-01-01

428

Water Pricing and Public-Private Partnership in the Americas  

Microsoft Academic Search

Because of the complexities associated with the water pricing and public-private partnership issue and their relevance to water management of the future, the Third World Water Centre for Water Management, the Inter-American Development Bank and the Agencia Nacional de Aguas of Brazil sponsored two focused workshops on water pricing in Brasilia, held on June 3rd-5th, 2002 and on public-private partnership

Luis E. García; Luiz Gabriel T. de Azevedo; Alexandre M. Baltar; Emanuele Lobina; David Hall; Charles W. Howe; Jeffrey W. Jacobs; Lilian del Castillo de Laborde; Damaris Orphanópoulos; Raymundo José Garrido; Benedito Braga; Clarice Strauss; Fatima Paiva; Antonio Eduardo Lanna; Maria Carmen Lemos; João Lúcio Farias de Oliveira; Ricardo Sandoval Minero; Víctor Lara Ruiz; Antonio Embid Irujo; Jennifer McKay; Martin Dettlaff

2003-01-01

429

Seguimiento fotométrico de tránsitos exoplanetarios  

NASA Astrophysics Data System (ADS)

The Unidad de Astronomía of the Universidad de Antofagasta (Chile) has begun a collaboration with the University College London, the Observatorio Astronómico de Córdoba and the Instituto de Astronomía Teórica y Experimental at Universidad Nacional de Córdoba, to enlarge a rich database of exoplanetary transits, with the efforts from both profesional and amateur astronomers. These data will be used to test Transit Timing Variations (TTVs) and help to improve the existing exoplanet databases. FULL TEXT IN SPANISH

Char, F.; Unda-Sanzana, E.; Kipping, D.; Colazo, C.; Núñez, R.; Guzzo, P.; Schneiter, M.; Colque, J. P.

430

First BNCT treatment of a skin melanoma in Argentina: dosimetric analysis and clinical outcome  

Microsoft Academic Search

A Phase I\\/II protocol for treating cutaneuos melanomas with BNCT was designed in Argentina by the Comisión Nacional de Energ??a Atómica and the medical center Instituto Roffo. The first of a cohort of thirty planned patients was treated on October 9, 2003. This article depicts the protocol-based procedure and describes the first clinical case, treatment regime and planning, patient irradiation,

S. J González; M. R Bonomi; G. A Santa Cruz; H. R Blaumann; O. A. Calzetta Larrieu; P Menéndez; R. Jiménez Rebagliati; J Longhino; D. B Feld; M. A Dagrosa; C Argerich; S. G Castiglia; D. A Batistoni; S. J Liberman; B. M. C Roth

2004-01-01

431

La cuerda dulce – a tolerability and acceptability study of a novel approach to specimen collection for diagnosis of paediatric pulmonary tuberculosis  

Microsoft Academic Search

BACKGROUND: Recent data demonstrate the utility of the string test for the diagnosis of sputum-scarce HIV-associated TB in adults. We hypothesized that, if well-tolerated by children, this simple tool might offer a breakthrough in paediatric TB diagnosis. Thus the objective of this study, undertaken in the paediatric service of the Hospital Nacional Dos de Mayo, Lima, Perú, was to determine

Felicia Chow; Nora Espiritu; Robert H Gilman; Rosmery Gutierrez; Sonia Lopez; A Roderick Escombe; Carlton AW Evans; David AJ Moore

2006-01-01

432

Proposal of a geo-environmental zoning method based on Ottobasin compartmentalization  

Microsoft Academic Search

This paper proposes a new geo-environmental zoning method based on the hydrographic basin compartmentalization and codification\\u000a technique known as the Ottobasin Method [Pfafstetter in Classificação de Bacias Hidrográficas—Metodologia de Codificação Rio\\u000a de Janeiro, RJ. Departamento Nacional de Obras de Saneamento (DNOS), p 19, 1989]. A study was carried out in the Pardo River Basin, São Paulo, Brazil. Ottobasins were characterized

Silvana Brandão Fontes; Osni José Pejon

2008-01-01

433

Chemical composition of the Orion nebula derived from echelle spectrophotometry  

Microsoft Academic Search

We present echelle spectroscopy in the 3500- to 7060-Å range for two positions of the Orion nebula. The data were obtained using the 2.1-m telescope at Observatorio Astrónmico Nacional in San Pedro Mártir, Baja California. We have measured the intensities of about 220 emission lines, in particular 81 permitted lines of C+, N+, N++, 0°, 0+, Ne0, Si+, Si++ and

C. Esteban; M. Peimbert; S. Torres-Peimbert; V. Escalante

1998-01-01

434

Analysis of the hydrological response of a saline closed lake to recent climate changes in South America (Lake Mar Chiquita, Argentina)  

Microsoft Academic Search

Analysis of the hydrological response of a saline closed lake to recent climate changes in South America (Lake Mar Chiquita, Argentina) Magali Troin1, Christine Vallet-Coulomb1, Florence Sylvestre1, Eduardo Piovano2 (1) CEREGE UMR6635, CNRS\\/IRD\\/UPCAM, Europôle méditerranéen de l'Arbois BP 80 13545 Aix-en-Provence cedex 4 (2) CICTERRA-CIGeS, Universidad Nacional de Córdoba, Av. Velez Sarsfield 1611, X5016GCA - Córdoba, Argentina. Lake Mar Chiquita

Troin

2009-01-01

435

PROPSOLO - BASE DE DADOS GEORREFERENCIADA DE PROPRIEDADES DO SOLO  

Microsoft Academic Search

Some of the existing information available in the Soil Science Department of the Estação Agronómica Nacional, correspondent to 633 layers\\/horizons of 224 georreferenced soil profiles (WGS84), was organized in a relational database (PROPSOLO). The database, developed within the MySQL Relational Database Management System, has a relational structure which allows great flexibility and capacity, being easily consulted when needed or modified

M. C. Gonçalves

436

Ultraviolet Radiation Dose National Standard of México  

NASA Astrophysics Data System (ADS)

We present the Ultraviolet (UV) Radiation Dose National Standard for México. The establishment of this measurement reference at Centro Nacional de Metrología (CENAM) eliminates the need of contacting foreign suppliers in the search for traceability towards the SI units when calibrating instruments at 365 nm. Further more, the UV Radiation Dose National Standard constitutes a highly accurate and reliable source for the UV radiation dose measurements performed in medical and cosmetic treatments as in the the food and pharmaceutics disinfection processes, among other.

Cardoso, R.; Rosas, E.

2006-09-01

437

NCI ofrece apoyo a quienes están necesitados después del huracane Katrina  

Cancer.gov

El Instituto Nacional del Cáncer (NCI), parte de los Institutos Nacionales de la Salud (NIH), está empeñado en ayudar a las miles de personas que han sido asoladas por los efectos del huracán Katrina. NCI está tratando de llegar a los públicos diversos para proporcionarles información relacionada con el cáncer que pueda ser compartida con exactitud y efectividad con quienes han sido afectados por el huracán.

438

NCI ofrece apoyo a quienes están necesitados después de los huracanes Katrina y Rita  

Cancer.gov

El Instituto Nacional del Cáncer (NCI), parte de los Institutos Nacionales de la Salud (NIH), está empeñado en ayudar a las miles de personas que han sido asoladas por los efectos de los huracánes Katrina y Rita. NCI está tratando de llegar a los públicos diversos para proporcionarles información relacionada con el cáncer que pueda ser compartida con exactitud y efectividad con quienes han sido afectados por los huracánes.

439

A study of migration to Greater Santiago (Chile)  

Microsoft Academic Search

\\u000a Resumen  Se presentan los resultados mas significativos de una encuesta realizada en el Gran Santiago (Chile) en 1962 por el Centro\\u000a Latinamericano de Demografia de las Naciones Unidas (CELADE). La población estudiada era por entonces de, aproximadamente,\\u000a 2.054.000 habitantes. Dieha investigación utilizó una muestra probabílistiea de poco más que 2.000 hogares familiares. Los\\u000a cuestionarios fueron diseñados para investigar características demoqráficas y

Juan C. Elizaga

1966-01-01

440

Calibration of the UBVRI high-speed photometer of Laboratorio Nacionale de Astrofisica, Brazil  

NASA Astrophysics Data System (ADS)

We describe the characteristics and performance of a high-speed multicolor photometer, FOTRAP, which has been used since 1988 at LNA, Laboratorio Nacional de Astrofisica/CNPq, Brazil. The optomechanical concepts, electronics, and software are outlined. We discuss the quality and consistency of the transformations from the natural system to the UVBRI standard system. We give particular attention to the problem of transforming to the standard system observations of objects with blue spectra, like standards with the values published in the literature.

Jablonski, F.; Baptista, R.; Barroso, J.; Gneiding, C. D.; Rodrigues, F.; Campos, R. P.

1994-11-01

441

[Workshop on Molecular Epidemiology of Viral Diseases].  

PubMed

A workshop on viral epidemiology was held on September 29, 1995 at the Medical School of the Universidad Nacional Autónoma de Mexico. The aim of this workshop was to promote interaction among scientists working in viral epidemiology. Eighteen scientists from ten institutions presented their experiences and work. General aspects of the epidemiology of meaningful viral diseases in the country were discussed, and lectures presented on the rota, polio, respiratory syncytial, dengue, papiloma, rabies, VIH and hepatitis viruses. PMID:9504103

Gómez, B; Cabrera, L; Arias, C F

1997-01-01

442

Genetic diversity and spatial structure in a new distinct Theobroma cacao L. population in Bolivia  

Microsoft Academic Search

Cacao (Theobroma cacao L.) is an important economic crop in the Bolivian Amazon. Bolivian farmers both cultivate cacao, and extract fruits from\\u000a wild stands in the Beni River region and in valleys of the Andes foothills. The germplasm group traditionally used is presently\\u000a referred to as “Cacao Nacional Boliviano” (CNB). Using DNA fingerprinting technology based on microsatellite markers, we genotyped

Dapeng ZhangWindson; Windson July Martínez; Elizabeth S. Johnson; Eduardo Somarriba; Wilberth Phillips-Mora; Carlos Astorga; Sue Mischke; Lyndel W. Meinhardt

443

Isolation and characterization of microsatellite loci in the stingless bee Melipona interrupta manaosensis (Apidae: Meliponini)  

Microsoft Academic Search

Melipona interrupta manaosensis is an important pollinator in the Neotropics. This stingless bee is reared by locals for honey production and also for conservation\\u000a purposes. Eleven microsatellite markers were isolated from M. i. manaosensis and characterized in 32 individuals from the Meliponary of the Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil.\\u000a The number of alleles observed for each

I. B. Francini; A. C. B. Sousa; D. A. Sforça; M. F. F. Costa-Pinto; T. Campos; C. G. Nunes-Silva; M. I. Zucchi; A. P. Souza; G. A. Carvalho-Zilse

2010-01-01

444

Childhood Obesity, Parents’ Knowledge and Report Cards  

Microsoft Academic Search

Over the last two decades, there has been an alarming, unprecedented increase in childhood obesity in both developed and developing countries. This trend is particularly pronounced in Mexico. In 1999, 5.3 percent of male and 5.9 percent of female children 5-11 years old were obese (Encuesta Nacional de Salud y Nutrición, 1999). By 2006, in just 7 years, these rates

Heather Royer; Silvia Prina

2010-01-01

445

Ten Years of Weather and Observing Statistics in San Pedro Martir, Baja California, Mexico  

Microsoft Academic Search

RESUMEN Se presentan estadfsticas del uso del telescopio de 2.1 -m del Observatorio Astron6mico Nacional en San Pedro Martir, Baja California, Mexico. Tambien se incluyen parametros climaticos basicos como la temperatura y humedad relativa al nivel del telescopio. La fracci6n de noches perdidas debido a mal clima fue de 27.4% en el periodo julio 1982 ajunio 1992. De enero 1984

M. Tapia

1992-01-01

446

e-Science initiatives in Venezuela  

Microsoft Academic Search

Within the context of the nascent e-Science in- frastructure in Venezuela, we describe several web- based scientific applications developed at the Cen- tro Nacional de C´ alculo Cient´ifico Universidad de Los Andes (CECALCULA), Merida, and at the Instituto Venezolano de Investigaciones Cient´ificas (IVIC), Caracas. The different strategies that have been followed for implementing quantum chemistry and atomic physics applications are

J. L. Chaves; G. Diaz; V. Hamar; R. Isea; F. Rojas; N. Ruiz; Rodrigo Torrens; Maylett Uzcategui; Julio Flórez-lópez; H. Hoeger; C. Mendoza; Luis A. Núñez

2007-01-01

447

Law, media and political dissent: The case of the FALN  

Microsoft Academic Search

Inspired on the works of scholars and activists that had denounced state repression of political activists in the United States, this research explores the theoretical proposal about the criminalization of political dissidence. The proposal of the criminalization of political dissidence is analyzed through the study of the case of Puerto Rican pro-independence organization Fuerzas Armadas de Liberación Nacional, F.A.L.N. ^

Yanira Reyes

2002-01-01

448

Ten years of Meridian Astronomy studies in Argentina  

NASA Astrophysics Data System (ADS)

In 1996, through a Cooperation Agreement between the Universidad Nacional de San Juan and the Real Instituto y Observatorio de la Armada de España (ROA), the San Fernando Automatic Meridian Circle of this Institute was installed in San Juan, to be jointly operated by this research center and the Observatorio Astronómico Félix Aguilar (OAFA). In these 10 years, the telescope has been working uninterruptedly, and in this paper we inform about its results and its observation program. FULL TEXT IN SPANISH

Mallamaci, C. C.; Pérez, J. A.; Marmolejo, L. F.; Navarro, J. L.; Sedeño, J. A.; Muiños, J. L.; Belizón, F.; Montojo, J.; Vallejo, M.

449

Evaluation of birth statistics derived retrospectively from fertility histories reported in a national population survey: United States, 1945–64  

Microsoft Academic Search

\\u000a Resumen  Este artículo evalua las estimaciones retrospectivas del numero de nacimientos y tasas de natalidad para los Estados Unidos\\u000a derivadas de las historias de fertilidad recogidas en un survey representativo de la poblacion nacional conducido en 1965.\\u000a Más especificamenie, este artículo se centra en la relación entre las variaciones en la calidad de las estadísticas de fertilidad\\u000a derivadas del survey y

Monroe G. Sirken; Georges Sabagh

1968-01-01

450

The population of Latin America  

Microsoft Academic Search

\\u000a Resumen  Las naciones de América Latina difieren coneiderablemente en su situación demoqráfica. Este trabajo pretende suministrar una\\u000a visión de conjunto del alcance de esta variación. En términos de densidad, distribución urbano-rural, composici? de la población,\\u000a participación de la fuerza de trabajo, tasas de natalidad, tasas de mortalidad, y tendencias de la migración existe amplia\\u000a variación y este artículo proporciona un resumen

Carmen A. Miró

1964-01-01

451

Tobacco, alcohol, diet and risk of non-Hodgkin's lymphoma: a case-control study in Uruguay  

Microsoft Academic Search

To test whether high meat intake is associated with the development of non-Hodgkin lymphoma (NHL) in the Uruguayan population, a case-control study was performed at the Instituto Nacional de Oncologia, Montevideo, Uruguay. After controlling for age, sex, residence, education, urban\\/rural status and the habit of drinking the beverage `mate', red meat intake was associated with an increased risk of NHL

Eduardo De Stefani; Luis Fierro; Enrique Barrios; Alvaro Ronco

1998-01-01

452

Política de comentarios del NCI  

Cancer.gov

Animamos a los usuarios a compartir sus ideas relacionadas con los temas en discusión en las secciones o foros determinados para tal fin en este sitio web u otros sitios administrados por el Instituto Nacional del Cáncer. Revisamos y publicamos los comentarios de acuerdo a la política indicada a continuación. Nos reservamos el derecho, a nuestra completa discreción, a no publicar o eliminar comentarios que no están de acuerdo con nuestra política.

453

Some Statistical Characteristics of Monthly and Annual Pluviometric Irregularity for the Spanish Mediterranean Coast  

Microsoft Academic Search

Summary  ?Seven series of monthly pluviometric amounts, sometimes exceeding recording periods of 100 years and compiled by the Instituto Nacional de Meteorología (Spain), are used to study the irregularity of the pluviometric regime along the Spanish Mediterranean coast and nearby Atlantic\\u000a coast. First of all, three statistical functions (gamma, log-normal and a combination of Poisson and gamma distributions)\\u000a and moment-ratio diagrams

X. Lana; A. Burgueño

2000-01-01

454

Intercomparison of aerosol optical depth measurements in the UVB using Brewer spectrophotometers and a Li-Cor spectrophotometer  

Microsoft Academic Search

The first Iberian UV radiation intercomparison was held at ``El Arenosillo''-Huelva station of the Instituto Nacional de Técnica Aeroespatial (INTA) from September 1 to 10, 1999. During this campaign, seven Brewer spectrophotometers and one Li-Cor spectrophotometer measured the total column aerosol optical depth (AOD) at 306, 310, 313.5, 316.75 and 320 nm. The AOD calibration of one Brewer was transferred

J. Gröbner; R. Vergaz; V. E. Cachorro; D. V. Henriques; K. Lamb; A. Redondas; J. M. Vilaplana; D. Rembges

2001-01-01

455

Automation of the OAN/SPM 1.5-meter Johnson telescope for operations with RATIR  

NASA Astrophysics Data System (ADS)

The Reionization And Transients Infra-Red (RATIR) camera is intended for robotic operation on the 1.5-meter Harold Johnson telescope of the Observatorio Astronómico Nacional on the Sierra de San Pedro Mártir, Baja California, Mexico. This paper describes the work we have carried out to successfully automate the telescope and prepare it for RATIR. One novelty is our use of real-time absolute astrometry from the finder telescopes to point and guide the main telescope.

Watson, Alan M.; Richer, Michael G.; Bloom, Joshua S.; Butler, Nathaniel R.; Ceseña, Urania; Clark, David; Colorado, Enrique; Córdova, Antolín.; Farah, Alejandro; Fox-Machado, Lester; Fox, Ori D.; García, Benjamín.; Georgiev, Leonid N.; González, J. Jesús; Guisa, Gerardo; Gutiérrez, Leonel; Herrera, Joel; Klein, Christopher R.; Kutyrev, Alexander S.; Lazo, Francisco; Lee, William H.; López, Eduardo; Luna, Esteban; Martínez, Benjamín.; Murillo, Francisco; Murillo, José Manuel; Núñez, Juan Manuel; Prochaska, J. Xavier; Ochoa, José Luís.; Quirós, Fernando; Rapchun, David A.; Román-Zúñiga, Carlos; Valyavin, Gennady

2012-09-01

456

Optical spectroscopy of X-ray source IGR J22534+6243  

NASA Astrophysics Data System (ADS)

Following the discovery of a 46.6 X-ray periodicity (ATel #4240, #4241) from the X-ray source IGR J22534+6243 (Krivonos et al. 2012, arXiv:1205.3941; ATel #4166), we analyzed spectroscopic data of its putative optical counterpart (ATel #4166) which were obtained using the 2.1m telescope of the Observatorio Astronomico Nacional (San Pedro Martir, Baja California, Mexico) equipped with a Boller & Chivens spectrograph.

Masetti, N.; Jimenez-Bailon, E.; Chavushyan, V.; Parisi, P.; Bazzano, A.; Landi, R.; Bird, A. J.

2012-07-01

457

Elevation-Dependent Trends in Precipitation Observed during NAME  

Microsoft Academic Search

Radar data from the 2004 North American Monsoon Experiment (NAME) enhanced observing period were used to investigate diurnal trends and vertical structure of precipitating features relative to local terrain. Two-dimensional composites of reflectivity and rain rate, created from the two Servicio Meteo- rológico Nacional (SMN; Mexican Weather Service) C-band Doppler radars and NCAR's S-band polari- metric Doppler radar (S-Pol), were

Angela K. Rowe; Steven A. Rutledge; Timothy J. Lang; Paul E. Ciesielski; Stephen M. Saleeby

2008-01-01

458

Knowledge and Technologies' assimilation and transference in the linking among University - Local Government - Population: Case Lacabamba  

Microsoft Academic Search

The Universidad Nacional Mayor de San Marcos and its Research Institute IIGEO, through fulfilling their vision, mission and social responsibility, are co-relating institutional efforts with local governments through framework and specific agreements, such as inthecaseoftheMunicipalityofLacabamba.?Throughthisarticleweshowhowthesharingresearchofamultidisciplinaryand? local population team allowed the carrying out of the agreed strategic planning, the identification of the projects portfolio, citizen's consultancy, participative budget, projects profile, local

Daniel Lovera; Lawrence Quipuzco; Carolina Becerra; Laureano Valentín; Dora Valencia; Aldo Noriega; Daniel Núñez; Helga Valdivia; Janet Montoro; Orlando Ipanaque; Daniel Inciso

459

9th transgenic technology meeting (TT2010) in Berlin, Germany: a meeting report  

Microsoft Academic Search

The first Transgenic Technology (TT) Meeting was organized in 1999 by Johannes Wilbertz, Karolinska Institute, Stockholm,\\u000a Sweden as a regional meeting. The TT Meetings continued in this way, constantly gathering additional practitioners of transgenic\\u000a methodologies until the breakthrough in 2005 when the 6th TT Meeting in Barcelona, Spain, hosted by Lluis Montoliu (Centro\\u000a Nacional de Biotecnologia, Madrid, Spain), generated the

Thomas L. SaundersPeter Sobieszczuk; Peter Sobieszczuk

2010-01-01

460

The Mexican Economy and the 2012 Elections  

Microsoft Academic Search

This paper examines some of the economic issues that could be relevant to Mexico’s July 1st presidential election. These include the short-term impact of the 2008-2009 recession and recovery; the longer-term record of Mexico’s economy since the Partido Acción Nacional (PAN) party took power nearly 12 years ago; and the longer-term trends of economic growth during the last decades of

Rebecca Ray; Mark Weisbrot

2012-01-01

461

Interview: Fighting disease from the chromosome end.  

PubMed

Maria A Blasco obtained her PhD in 1993 for her research at the Centro de Biología Molecular 'Severo Ochoa' (Madrid, Spain) under the supervision of M Salas. That same year, Blasco joined the Cold Spring Harbor Laboratory in New York (NY, USA) as a Postdoctoral Fellow under the leadership of CW Greider. In 1997 she returned to Spain to start her own research group at the Centro Nacional de Biotecnología in Madrid. She joined the Centro Nacional de Investigaciones Oncológicas in 2003 as Director of the Molecular Oncology Programme and Leader of the Telomeres and Telomerase Group, and was appointed Centro Nacional de Investigaciones Oncológicas Director in 2011. Blasco has received the Josef Steiner Cancer Research, Rey Jaime I, Körber European Science, Alberto Sols and Fundación Lilly Precilinical Research Awards, as well as the Spanish National Santiago Ramón y Cajal Research Award in Biology (2010). Blasco has also been awarded the EMBO Gold Medal and has served on its Council since 2008. PMID:24059795

Blasco, Maria A

2013-10-01

462

An audio-magnetotelluric investigation in Terceira Island (Azores)  

NASA Astrophysics Data System (ADS)

Ten audio-magnetotelluric soundings have been carried out along a profile crossing the Serra do Cume caldera in the eastern part of the Terceira Island (Azores). The main objectives of this investigation were to detect geoelectrical features related with tectonic structures and to characterize regional hydrological and hydrothermal aspects mainly those related to geothermal fluid dynamics. Three-dimensional numerical investigation showed that the data acquired at periods shorter than 1 s are not significantly affected by ocean effect. The data was analysed using the Smith's decomposition method in order to investigate possible distortions caused by superficial structures and to estimate a global regional strike. The results suggest that in general the soundings were not distorted. A regional N55°W strike was chosen for the two-dimensional data inversion. The low-resistivity zones (10 30 ohm-m) displayed in the central part of the 2-D geoelectrical model have been interpreted as caused by hydrothermal circulation. The low-resistivity anomalies at the ends of the profile might be attributed to alteration zones with interaction of seawater intrusion. High-resistivity (> 300 ohm-m) values have been related with less permeable zones in the SW of Cinco Picos and Guilherme Moniz caldera walls.

Monteiro Santos, Fernando A.; Trota, António; Soares, António; Luzio, Rafael; Lourenço, Nuno; Matos, Liliana; Almeida, Eugénio; Gaspar, João L.; Miranda, Jorge M.

2006-08-01

463

The Role of Body Size and Shape in Understanding Competitive Interactions within a Community of Neotropical Dung Beetles  

PubMed Central

Geometric morphometrics is helpful for understanding how body size and body shape influence the strength of inter-specific competitive interactions in a community. Dung beetles, characterized by their use of decomposing organic material, provide a useful model for understanding the structuring of ecological communities and the role of competition based on their size and morphology. The relationship between body size and shape in a dung beetle community from the Atlantic Forest in Serra do Japi, Brazil was analyzed for 39 species. Fifteen anatomical landmarks on three-dimensional Cartesian coordinates were used to describe both the shape and the size of the body of each species on the basis of the centroid located along homologous points in all of the species. The first vector of a principal components analysis explained 38.5% of the morphological variation among species, and represents a gradient of body shape from elongated, flattened bodies with narrow abdomen to rounded or convex bodies. The second component explained 17.8% of the remaining variation in body shape, which goes from species with an abdomen that is larger than the elytra to species with constricted abdomens and large elytra. The relationship between body size and shape was analyzed separately for diurnal and nocturnal species. In both guilds not only were there differences in body size, but also in body shape, suggesting a reduction in their level of competition.

Hernandez, Malva I. M.; Monteiro, Leandro R.; Favila, Mario E.

2011-01-01

464

Evaluation of the altimetry from SRTM-3 and planimetry from high-resolution PALSAR FBD data for semi-detailed topographic mapping in the Amazon Region.  

PubMed

The Brazilian Amazon has a deficit of 35% of coverage regarding topographic mapping at semi-detailed (1:100,000) scale. This paper presents an alternative to overcome this scenario using a combination of planialtimetric information from two orbital SAR (Synthetic Aperture Radar) missions. The altimetry was acquired from Shuttle Radar Topography Mission (SRTM), while the planimetry was provided from Fine Beam Dual (FBD) images of the Phased Array L-band Synthetic Aperture Radar (PALSAR) sensor. The research was carried out in the mountainous area of the Serra dos Carajás (Pará State), located on the Amazon region. The quality of the orbital topographic information was evaluated regarding precise planialtimetric measurements acquired from Global Positioning System (GPS) field campaigns. The evaluations were performed following two approaches: (1) the use of Root Mean Square Error (RMSE) and (2) tendency and precision hypothesis tests. The investigation has shown that the planialtimetric quality of the orbital products fulfilled the Brazilian Map Accuracy Standards requirements for 1:100,000 A Class map. Thus, the use of combination of information provided by PALSAR and SRTM-3 data can be considered a promising alternative for production and update of semi-detailed topographic mapping in similar environments of the Amazon region, where topographic information is lacking or presents low quality. PMID:21861043

Rodrigues, Thiago G; Paradella, Waldir R; Oliveira, Cleber G

2011-09-01

465

Gemini G.E.L. online catalogue raisonne  

NSDL National Science Digital Library

The National Gallery of Art presents the Gemini G.E.L. (Graphic Editions Limited) online catalogue raisonne, a listing of prints produced at this Los Angeles studio from 1966 through 1996. At Gemini, artists including Robert Rauschenberg, Ellsworth Kelly, Jasper Johns, David Hockney, Sam Francis, Roy Lichtenstein, Jonathan Borofsky, and Richard Serra worked with master printers to produce editions of prints. Initially the online catalogue raisonne seems difficult to browse, but the search area provides drop-down boxes for artists' names, dates, and series titles, so without prior knowledge that Frank Stella worked at Gemini, one can still retrieve 93 Stella prints. In the essay section, users can read a series of illustrated sections on the history of Gemini, individual artists, and decades, and link to larger images. The guide section explains the metadata fields in each catalog record, such as artist, series, title, and less obvious aspects such as "support," which refers to the support each print is on, almost always paper, or start date (year the artists began collaborating with Gemini) vs. signature date (year the artist signed the edition) vs. publication date (year the edition was made available).

2001-01-01

466

The role of body size and shape in understanding competitive interactions within a community of Neotropical dung beetles.  

PubMed

Geometric morphometrics is helpful for understanding how body size and body shape influence the strength of inter-specific competitive interactions in a community. Dung beetles, characterized by their use of decomposing organic material, provide a useful model for understanding the structuring of ecological communities and the role of competition based on their size and morphology. The relationship between body size and shape in a dung beetle community from the Atlantic Forest in Serra do Japi, Brazil was analyzed for 39 species. Fifteen anatomical landmarks on three-dimensional Cartesian coordinates were used to describe both the shape and the size of the body of each species on the basis of the centroid located along homologous points in all of the species. The first vector of a principal components analysis explained 38.5% of the morphological variation among species, and represents a gradient of body shape from elongated, flattened bodies with narrow abdomen to rounded or convex bodies. The second component explained 17.8% of the remaining variation in body shape, which goes from species with an abdomen that is larger than the elytra to species with constricted abdomens and large elytra. The relationship between body size and shape was analyzed separately for diurnal and nocturnal species. In both guilds not only were there differences in body size, but also in body shape, suggesting a reduction in their level of competition. PMID:21526928

Hernández, Malva I M; Monteiro, Leandro R; Favila, Mario E

2011-01-01

467

Follow-up of a road building scheme in a fragile environment  

SciTech Connect

Serra do Mar, in Southeastern Brazil, is an extremely diverse and rich environment characterized by intense rainfall and steep slopes covered by tropical rainforest. A number of roads, highways, railways, pipelines, and transmission lines cross this zone. A new highway that has been approved by the Sao Paulo State environment authorities is currently under construction. During the approval phase, the issue of ensuring proper implementation of mitigation measures arose as a significant concern. As a consequence, an innovative institutional arrangement has been set up for following-up, by which a multi-institutional multidisciplinary team performs weekly inspection tours, whereas the project owner hired its own consultant to oversee the construction, putting the contractor under strict scrutiny. Among the most significant issues addressed, the following are particularly relevant: (1) erosion and sediment yield; (2) river siltation; (3) slope stability; (4) excavated soil and rock disposal; (5) management of water pumped from tunneling; and (6) minimizing habitat loss. Results show that strict environmental supervision can effectively ensure that environmental impacts can be maintained within the limits of predicted impacts or legal requirements. Furthermore, this case showed that careful review of environmental impact studies and the establishment of detailed terms and conditions to be fulfilled by the proponent during the construction phase are necessary conditions for a successful follow-up.

Gallardo, Amarilis Lucia Casteli Figueiredo; Sanchez, Luis E

2004-01-01

468

[Association of Constrictotermes cyphergaster Silvestri (Isoptera: Termitidae) with trees in the Brazilian Cerrado].  

PubMed

Termites usually build nests differently shaped and characterized according to each species, to protect and keep society cohesion. Some species build nests in the ground, some prefer tree thunks or branches as support, whereas other dig galleries in the wood. The purpose of this study is to analyze the relationship between the occurrence of arboreal termites Constrictotermes cyphergaster Silvestri and tree species that support the nest of this species, in a Cerrado sensu strictu of the Serra de Caldas Novas, GO. Data suggest a association relationship between C. Cyphergaster and the tree species Qualea grandiflora Mart., Annona crassiflora Mart., Caryocar brasiliense Camb. and Plathymenia reticulata Benth., shown by high Qui-squared values (chi2 = 214.986, gl. = 20, P < 0.001). This relationship may be found among other termites and tree species, including Cerrado biome, and may be due to several factors, such as natural competitors and predators, toxin production by other tree species or benefits between associated species (facultative mutualism or facilitation). PMID:17352068

Lima-Ribeiro, Matheus de S; Pinto, Míriam P; Costa, Shirley S; Nabout, João C; Rangel, Thiago F L V B; de Melo, Tatiana L; de Moura, Iona'i O

469

VIII Olimpíada Brasileira de Astronomia e Astronáutica  

NASA Astrophysics Data System (ADS)

Neste trabalho apresentamos as motivações pelas quais organizamos, em conjunto, pela primeira vez, a Olimpíada Brasileira de Astronomia incluindo a Astronáutica, em colaboração com a Agência Espacial Brasileira. Esta ampliação contribuiu para atrair ainda mais alunos, professores, escolas e patrocinadores para participarem desta Olimpíada. Em 2005 participaram da VIII Olimpíada Brasileira de Astronomia e Astronáutica (VIII OBA) 187.726 alunos distribuídos por 3.229 escolas, pertencentes a todos os estados brasileiros, incluindo o Distrito Federal. O crescimento em número de alunos participantes foi 52,4% maior do que em 2004. Em abril de 2005 organizamos, em Itapecerica da Serra, SP, um curso para os 50 alunos previamente selecionados e participantes da VII OBA e ao final selecionamos, dentre eles, uma equipe de 5 alunos, os quais representaram o Brasil na X Olimpíada Internacional de Astronomia, na China, em outubro de 2005. Ganhamos, pela primeira vez, uma medalha de ouro naquele evento. Em Agosto de 2005, organizamos a VIII Escola de Agosto para 50 alunos e respectivos professores, em Águas de Lindóia, SP, juntamente com a XXXI reunião anual da Sociedade Astronômica Brasileira (SAB). Em novembro de 2005 realizamos a I Jornada Espacial, em São José dos Campos, com 22 alunos e 22 professores selecionados dentre os participantes que melhores resultados obtiveram nas questões de Astronáutica da VIII OBA. Neste trabalho detalhamos os resultados da VIII OBA bem como as ações subseqüentes.

Garcia Canalle, João Batista; Villas da Rocha, Jaime Fernando; Wuensche de Souza, Carlos Alexandre; Pereira Ortiz, Roberto; Aguilera, Nuricel Villalonga; Padilha, Maria De Fátima Catta Preta; Pessoa Filho, José Bezerra; Soares Rodrigues, Ivette Maria

2007-07-01

470

Recent developments in Molecular Magnetism  

NASA Astrophysics Data System (ADS)

Two hot topics in this area are highlighted namely the design of new multifunctional magnetic materials, and the study of mononuclear single-molecule magnets. In the first topic I will present the attempts to design materials exhibiting coexistence of superconductivity and magnetism using a chemical approach [1]. In the second topic I will show that single-molecule magnets based on lanthanides provides the opportunity to tune quantum tunneling effects and to use these systems as qubits in quantum computing [2]. Finally, I will highlight the relevance of these magnetic systems in molecular spintronics.[4pt] [1] E. Coronado, C. Mart'i-Gastaldo, E. Navarro-Moratalla, A. Ribera, S. J. Blundell, P. J. Baker Nature Chem. 2010, 2, 1031.[0pt] [2] F. Luis, M. J. Mart'inez-P'erez, O. Montero, E. Coronado, S. Cardona-Serra, C. Mart'i-Gastaldo, J.M. Clemente-Juan, J. Ses'e, D. Drung, T. Schurig, Phys. Rev. B 2010, 82, 060403 R.

Coronado, Eugenio

2011-03-01

471

High mannose-specific lectin (KAA-2) from the red alga Kappaphycus alvarezii potently inhibits influenza virus infection in a strain-independent manner.  

PubMed

The carbohydrate binding profile of the red algal lectin KAA-2 from Kappaphycus alvarezii was evaluated by a centrifugal ultrafiltration-HPLC method using pyridylaminated oligosaccharides. KAA-2 bound exclusively to high mannose type N-glycans, but not to other glycans such as complex type, hybrid type, or the pentasaccharide core of N-glycans. This lectin exhibited a preference for an exposed ?1-3 Man on a D2 arm in a similar manner to Eucheuma serra agglutinin (ESA-2), which shows various biological activities, such as anti-HIV and anti-carcinogenic activity. We tested the anti-influenza virus activity of KAA-2 against various strains including the recent pandemic H1N1-2009 influenza virus. KAA-2 inhibited infection of various influenza strains with EC50s of low nanomolar levels. Immunofluorescence microscopy using an anti-influenza antibody demonstrated that the antiviral activity of KAA-2 was exerted by interference with virus entry into host cells. This mechanism was further confirmed by the evidence of direct binding of KAA-2 to a viral envelope protein, hemagglutinin (HA), using an ELISA assay. These results indicate that this lectin would be useful as a novel antiviral reagent for the prevention of infection. PMID:21219864

Sato, Yuichiro; Morimoto, Kinjiro; Hirayama, Makoto; Hori, Kanji

2011-01-08

472

Genotoxicity and composition of particulate matter from biomass burning in the eastern Brazilian Amazon region.  

PubMed

In the present study Tradescantia pallida micronucleus (Trad-MCN) bioassay was used to assess the genotoxicity of particulate matter with a mass median aerodynamic diameter less than 10 ?m (PM??) in Tangara da Serra (MT), a Brazilian Amazon region that suffers the impact of biomass burning. The levels of PM (coarse and fine size fractions) and black carbon (BC) collected were also measured. Furthermore, the alkanes and polycyclic aromatic hydrocarbons (PAHs) were identified and quantified in the samples taken during the burning period by gas chromatography with flame ionization detection (GC-FID). The PM and BC results for both fractions indicate a strong correlation (p < 0.001). The analysis of alkanes indicates an anthropic influence. Retene was the most abundant PAH found, an indicator of biomass burning, and 12 other PAHs considered to be potentially mutagenic and/or carcinogenic were identified in this sample. The Trad-MCN bioassay showed a significant increase in micronucleus frequency during the period of most intense burning, possibly related to the mutagenic PAHs that were found in such extracts. This study demonstrated that Trad-MCN was sensitive and efficient in evaluating the genotoxicity of organic compounds from biomass burning. It further emphasizes the importance of performing chemical analysis, because changes in chemical composition generally have a negative effect on many living organisms. This bioassay (ex situ), using T. pallida with chemical analysis, is thus recommended for characterizing the genotoxicity of air pollution. PMID:21496924

de Oliveira Alves, Nilmara; Matos Loureiro, Ana Lúcia; Dos Santos, Fernando Cavalcante; Nascimento, Kátia Halter; Dallacort, Rivanildo; de Castro Vasconcellos, Pérola; de Souza Hacon, Sandra; Artaxo, Paulo; de Medeiros, Silvia Regina Batistuzzo

2011-04-14

473

Computational models of music perception and cognition II: Domain-specific music processing  

NASA Astrophysics Data System (ADS)

In Part I [Purwins H, Herrera P, Grachten M, Hazan A, Marxer R, Serra X. Computational models of music perception and cognition I: The perceptual and cognitive processing chain. Physics of Life Reviews 2008, in press, doi:10.1016/j.plrev.2008.03.004], we addressed the study of cognitive processes that underlie auditory perception of music, and their neural correlates. The aim of the present paper is to summarize empirical findings from music cognition research that are relevant to three prominent music theoretic domains: rhythm, melody, and tonality. Attention is paid to how cognitive processes like category formation, stimulus grouping, and expectation can account for the music theoretic key concepts in these domains, such as beat, meter, voice, consonance. We give an overview of computational models that have been proposed in the literature for a variety of music processing tasks related to rhythm, melody, and tonality. Although the present state-of-the-art in computational modeling of music cognition definitely provides valuable resources for testing specific hypotheses and theories, we observe the need for models that integrate the various aspects of music perception and cognition into a single framework. Such models should be able to account for aspects that until now have only rarely been addressed in computational models of music cognition, like the active nature of perception and the development of cognitive capacities from infancy to adulthood.

Purwins, Hendrik; Grachten, Maarten; Herrera, Perfecto; Hazan, Amaury; Marxer, Ricard; Serra, Xavier

2008-09-01

474

Prevalence and risk factors for HIV, syphilis, hepatitis B, hepatitis C, and HTLV-I/II infection in low-income postpartum and pregnant women in Greater Metropolitan Vitória, Espírito Santo State, Brazil.  

PubMed

Sexually transmitted infections during pregnancy pose a major risk to the fetus due to vertical transmission. The study's objective was to determine the prevalence of HIV, syphilis, hepatitis B and C, and HTLV-I/II infection among low-income postpartum and pregnant women treated in Greater Metropolitan Vitória, Espírito Santo State, Brazil, and the risk factors associated with these infections. A cross-sectional study was conducted from February to October 1999 assessing postpartum and pregnant women from the maternity ward of the Vitória Mercy Hospital and the Carapina Outpatient Referral Unit in the Municipality of Serra, respectively. Patients were systematically interviewed and had blood samples drawn for serological tests (HIV 1&2, VDRL, HbsAg, anti-HCV, and HTLV-I/II). A total of 534 patients (332 postpartum and 202 pregnant women) were assessed. Seroprevalence rates for the target infections in postpartum and pregnant women and the overall sample were as follows, respectively: HIV 0.9%, 0%, and 0.6%; syphilis 2.1%, 3.6%, and 2.7%; HBV 1.2%, 1%, and 1.1%; HCV 1.8%, 0.6%, and 1.4%; and HTLV-I/II 1.7%, 0.6%, and 1.3%. Factors associated with the various infections are presented and analyzed in light of other research findings from the literature. PMID:19300855

Lima, Lucia Helena Mello de; Viana, Maria Carmen

2009-03-01

475

Natural radionuclides in major aquifer systems of the Paraná sedimentary basin, Brazil.  

PubMed

This paper describes the natural radioactivity of groundwater occurring in sedimentary (Bauru and Guarani) and fractured rock (Serra Geral) aquifer systems in the Paraná sedimentary basin, South America that is extensively used for drinking purposes, among others. The measurements of gross alpha and gross beta radioactivity as well the activity concentration of the natural dissolved radionuclides ??K, ²³?U, ²³?U, ²²?Ra, ²²²Rn, ²¹?Po and ²¹?Pb were held in 80 tubular wells drilled in 21 municipalities located at São Paulo State and its border with Mato Grosso do Sul State in Brazil. Most of the gross alpha radioactivity data were below 1 mBq/L, whereas values exceeding the gross beta radioactivity detection limit of 30 mBq/L were found. The radioelement solubility in the studied systems varied according to the sequence radon>radium>other radionuclides and the higher porosity of sandstones relatively to basalts and diabases could justify the enhanced presence of dissolved radon in the porous aquifer. The implications of the data obtained in terms of standards established for defining the drinking water quality have also been discussed. The population-weighted average activity concentration for these radionuclides was compared to the guideline value of 0.1 mSv/yr for the total effective dose and discussed in terms of the choice of the dose conversion factors. PMID:21684169

Bonotto, Daniel Marcos

2011-06-12

476

Shallow landslide prediction and analysis with risk assessment using a spatial model in the coastal region in the state of São Paulo, Brazil  

NASA Astrophysics Data System (ADS)

In Brazil, most of the disasters involving landslide occur in coastal regions, with population density concentrated on steep slopes. Thus, different approaches have been used to evaluate the landslide risk, although the greatest difficulty is related to the scarcity of spatial data with good quality. In this context, four cities located on the southeast coast of Brazil - Santos, Cubatão, Caraguatatuba and Ubatuba - in a region with the rough reliefs of the Serra do Mar and with a history of natural disasters were evaluated. Spatial prediction by fuzzy gamma technique was used for the landslide susceptibility mapping, considering environmental variables from data and software in the public domain. To validate the susceptibility mapping results, it was overlapped with risk sectors provided by the Geological Survey of Brazil (CPRM). A positive correlation was observed between the classes most susceptible and the location of these sectors. The results were also analyzed from the categorization of risk levels provided by CPRM. To compare the approach with other studies using landslide-scar maps, correlated indexes were evaluated, which also showed satisfactory results, thus indicating that the methodology presented is appropriate for risk assessment in urban areas and can be replicated to municipalities that do not have risk areas mapped.

Camarinha, P. I. M.; Canavesi, V.; Alvalá, R. C. S.

2013-10-01

477

Flood risk assessment and coping capacity with floods in central Vietnam  

NASA Astrophysics Data System (ADS)

Some elements of the integrated risk assessment framework developed within the European KULTURISK project (www.kulturisk.eu), named KIRAF (Kulturisk Integrated Risk Assessment Framework-KIRAF is applied for flood risk assessment in a flood prone area of Quang Ngai province, central Vietnam. Since the socio-economic condition is developing and living standards are increasing, to help decision-makers in examining the possible risks and damages associated with uncertain future flood hazards and identifying the most appropriate structural and non-structural risk prevention measures, it is necessary to apply appropriate risk assessment methodologies. Starting from flood hazard maps estimated for different return periods in terms of depth, duration or velocity using a 2D hydrodynamic model, for vulnerability assessment and exposure estimation, direct tangible and intangible, indirect tangible and intangible costs are estimated, based on over 380 responses of local people to 39 questions in a questionnaire directly related to flood risk and preparedness. In this way cost functions for some, at least, of these four damage classes can be fitted to local conditions. Field surveys and technical reports were used for a better understanding of the questionnaire responses. In this way social and behavioral aspects influencing adaptive capacity, coping capacity and susceptibility to the physical hazard can be made more explicit for the successive Socio-Economic Regional Risk Assessment (SERRA) methodology proposed in KULTURISK.

Vu, Thanh Tu; Ranzi, Roberto

2013-04-01

478

Geomagnetically induced currents in the Uruguayan high-voltage power grid  

NASA Astrophysics Data System (ADS)

We estimate the influence of the geomagnetically induced currents (GIC) on the Uruguayan electrical distribution grid. The GIC are related to time variations in the geomagnetic field caused by the interaction of the solar wind with the Earth's magnetosphere. These currents may cause several problems in power grids, pipelines, among others. South America is close to the South Atlantic Magnetic Anomaly (SAA). Particle precipitation in the anomaly region could lead to pulsations in the horizontal component of the geomagnetic field, that may contribute to the GIC production. Scarce research has been done to assess the space weather impact on this area. Due to the lack of magnetic field data at the Uruguayan territory, spherical elementary currents system (SECS) was used to interpolate field values with data available from three magnetic observatories located at Vassouras, Trelew and São Martinho da Serra. The simple topology of the Uruguayan power grid provides some advantages in the calculation of GIC. To calculate these currents, a plane wave method combined with a ground conductivity model was used. Estimated GIC suggest peak currents ca. 15 A, at the earthing points of some substations in a 770 km power line during the Halloween Magnetic Storm on 2003 October 29.

Caraballo, R.; Sánchez Bettucci, L.; Tancredi, G.

2013-08-01

479

The occurrence of microdiamonds in Mesoproterozoic Chapada Diamantina intrusive rocks--Bahia/Brazil.  

PubMed

The origin of diamonds from Serra do Espinhaço in Diamantina region (State of Minas Gerais) and in Chapada Diamantina, Lençóis region (State of Bahia) remains uncertain, even taking into account the ample research carried out during the last decades. The lack of typical satellite minerals in both districts makes a kimberlitic source for these diamonds uncertain. In mid 18th century the occurrence of a metamorphosed igneous rock composed of martite, sericite and tourmaline was described in Diamantina region and named hematitic phyllite, considered by some researchers as a possible diamond source. Similar rocks were found in Lençóis and examined petrographically and their heavy mineral concentration was investigated by means of scanning electron microscopy (SEM). Petrographic analyses indicated an igneous origin for these rocks and SEM analyses showed the discovery of microdiamonds. Geochronological studies using the Ar/Ar technique in muscovites yielded minimum ages of 1515+/-3 Ma, which may correlate with 1710+/-12 Ma from U-Pb method in igneous zircons from the hematitic phyllites. Both rock types also have the same mineral and chemical composition which leads to the conclusion that the intrusive rocks were protolith of the hematitic phyllites. This first discovery of microdiamonds in intrusive rocks opens the possibility of new investigation models for diamond mineralization in Brazilian Proterozoic terrains. PMID:17625685

Battilani, Gislaine A; Gomes, Newton S; Guerra, Wilson J

2007-06-01

480

Coleopterans associated with plants that form phytotelmata in subtropical and temperate Argentina, South America.  

PubMed

A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis. PMID:22236084

Campos, Raúl E; Fernández, Liliana A

2011-01-01

481

Coleopterans Associated with Plants that form Phytotelmata in Subtropical and Temperate Argentina, South America  

PubMed Central

A list of the most common plants that form phytotelmata and their associated coleopterans (aquatic, semi-aquatic and terrestrial) from the northeastern subtropical and temperate area of Argentina, South America with biological and behavioral observations is presented in this study. Species of Poaceae (n = 3), Bromeliaceae (5), Apiaceae (6), Araceae (2), Urticaceae (1), Marantaceae (1), Arecaceae (1), Dipsacaceae (1) and Cyperaceae (1) were identified as phytotelmata. Aquatic species of Scirtidae (2), Dytiscidae (2), and Hydrophilidae (4), semi-aquatic Chelonariidae (2), and terrestrial species of Carabidae (3), Staphylinidae (5), Histeridae (1), Elateridae (1), Cantharidae (1), Cleridae (1), Tenebrionidae (1), Meloidae (1), Anthicidae (1), Chrysomelidae (3), Curculionidae (7) and Apionidae (1) were identified from six species of Eryngium L. (Apiales: Apiaceae), two species of Guadua Kunth (Poales: Poaceae), Aechmea distichantha Lemaire (Poales: Bromeliaceae), and from fallen leaves of Euterpe edulis Martius (Arecales: Arecaceae) from the temperate and subtropical area. The highest species richness was recorded in Eryngium phytotelmata. Fifteen species of beetles inhabit Eryngium cabrerae Pontiroli, 11 in E. horridum Malme, 7 in E. stenophyllum Urban, 4 in E. aff. serra Chamisso and Schlechtendal., 3 in E. elegans Chamisso and Schlechtendal, 2 in E. eburneum Decne and E. pandanifolium Chamisso and Schlechtendal. From bamboo, 6 species of coleopterans were collected from Guadua trinii (Nees) Nees ex Ruprecht and 4 from G. chacoensis (Rojas) Londoño and Peterson. Three species of aquatic coleopterans were recorded from A. distichantha and only one from E. edulis.

Campos, Raul E.; Fernandez, Liliana A.

2011-01-01

482

Altitudinal and temporal distribution of Plagiometriona Spaeth, 1899 (Coleoptera, Chrysomelidae, Cassidinae) in a tropical forest in southeast Brazil  

PubMed Central

Abstract Species richness and abundance of seven Plagiometriona species on their host plants were studied along a single trail in the mountainous Serra dos Órgãos National Park in the State of Rio de Janeiro, Brazil. Six sites were chosen along an altitudinal gradient ranging from 1300 m to 2050 m, where all Solanaceae host plants were inspected in search of adults every two months from June 2006 to June 2007. Species richness did not vary clearly with altitude, but abundance increased up to 1800 m, where the highest mean host plant density was found, and abruptly decreased at the last elevational site. Most species showed a restricted distribution and just one occurred across the entire gradient. For at least four species, altitudinal distribution seems to be strongly related to host plant availability, while for the others it is difficult to access which factors are decisive, due to their low numbers. Only in October all species were found in the field, although February was the month with the highest total abundance. Over the course of the study, the greatest abundances were recorded from October to February, comprehending the hottest and rainiest months, and the lowest abundances were found from June to August, which include the coldest and driest months. Thus, species seasonal distribution, supported by other studies in the same area, seems to be related to the local climate.

Flinte, Vivian; de Freitas, Sama; de Macedo, Margarete Valverde; Monteiro, Ricardo Ferreira

2011-01-01

483

Altitudinal and temporal distribution of Plagiometriona Spaeth, 1899 (Coleoptera, Chrysomelidae, Cassidinae) in a tropical forest in southeast Brazil.  

PubMed

Species richness and abundance of seven Plagiometriona species on their host plants were studied along a single trail in the mountainous Serra dos Órgãos National Park in the State of Rio de Janeiro, Brazil. Six sites were chosen along an altitudinal gradient ranging from 1300 m to 2050 m, where all Solanaceae host plants were inspected in search of adults every two months from June 2006 to June 2007. Species richness did not vary clearly with altitude, but abundance increased up to 1800 m, where the highest mean host plant density was found, and abruptly decreased at the last elevational site. Most species showed a restricted distribution and just one occurred across the entire gradient. For at least four species, altitudinal distribution seems to be strongly related to host plant availability, while for the others it is difficult to access which factors are decisive, due to their low numbers. Only in October all species were found in the field, although February was the month with the highest total abundance. Over the course of the study, the greatest abundances were recorded from October to February, comprehending the hottest and rainiest months, and the lowest abundances were found from June to August, which include the coldest and driest months. Thus, species seasonal distribution, supported by other studies in the same area, seems to be related to the local climate. PMID:22303101

Flinte, Vivian; de Freitas, Sama; de Macedo, Margarete Valverde; Monteiro, Ricardo Ferreira

2011-12-21

484

Helminth fauna of two species of physalaemus (anura: leiuperidae) from an undisturbed fragment of the atlantic rainforest, southeastern Brazil.  

PubMed

Two amphibian species, Physalaemus cuvieri and Physalaemus olfersii, from Serra do Mar State Park, which is an old-growth environment of the Atlantic Rainforest in southeastern Brazil, were surveyed for endoparasites. Hosts were sampled in 2 ponds; each was colonized by only 1 Physalaemus species. The overall prevalence of helminths was high and similar in both amphibian species. The mean intensity of infection in P. olfersii did not differ statistically from that in P. cuvieri . Nine helminth species were found: 2 acanthocephalans, 1 cestode, and 6 nematodes. Parasite richness in the 2 host species was similar. The composition of helminth fauna differed but the 2 hosts shared the most prevalent taxon of nematode (an unidentified species of Cosmocercidae). All helminth species exhibited an aggregated distribution pattern in the host species. The present results demonstrate relatively low species richness and the dominance of generalist parasite species. This study contributes to knowledge regarding the structure and composition of the helminth community in anurans. PMID:23409941

Toledo, Gislayne M; Aguiar, Aline; Silva, Reinaldo J; Anjos, Luciano A

2013-02-14

485

Current advances on the study of snail-snail interactions, with special emphasis on competition process.  

PubMed

Field work research on population dynamic of snails from the regions of Belo Horizonte and Lagoa Santa give much information about interactions among two or more species of mollusks: Pomacea haustrum, Biomphalaria glabrata, B. tenagophila, B. straminea and Melanoides tuberculata. Data ranging from two years to several decades ago suggest that the Pampulha reservoir is like a cemetery of B. glabrata and B. straminea, species that coexist for more than 14 years in a small part of a stream, whereas only B. glabrata lives in all the streams of the basin. In the last ten to twenty years B. tenagophila has coexisted with P. haustrum and M. tuberculata in the Serra Verde ponds and in the Pampulha dam. However these species have not settled in any of the brooks, except temporarily. The data suggest that the kind of biotope and the habitat conditions are decisive factors for the permanence of each species in its preferencial biotope. B. glabrata, natural from streams and riverheads, quickly disappears from the reservoirs and ponds where it coexists with other species for a short time, independently of the competitive process. Competition needs to be better studied, since in Central America and Caribean islands this kind of study has favored the biological control of planorbid species. PMID:8531669

de Freitas, J R; dos Santos, M B

486

Comparison of two mammalian surveys made with camera traps in southeastern Brazil, focusing the abundance of wild mammals and domestic dogs.  

PubMed

Sampling allows assessing the impact of human activities on mammal communities. It is also possible to assess the accuracy of different sampling methods, especially when the sampling effort is similar. The present study aimed at comparing two mammalian surveys carried out over a three-year interval, in terms of sampling effort, capture success, abundance of domestic dogs, impact of human activities, and relative biomass using camera traps, in the Serra do Japi Biological Reserve and surroundings, located in Jundiaí, state of São Paulo, southeastern Brazil. The total richness recorded was 13 species, one domestic and 12 wild mammals. Sampling effort in both surveys was similar, but capture success and number of captures differed. The abundance of wild mammals and dogs did also differ between surveys. There was a highly significant correlation between abundance of wild mammals and capture effort for the survey performed in 2006/2007, but not for the survey performed in 2009/2010. The difference between samples may be related to human disturbance, since the number of domestic mammals photographed was higher in the second survey, three years after the first survey. Despite being a reserve, the area is still under pressure from urbanization, biological invasion, environmental degradation, and hunting, which may reduce the abundance of wild mammals. PMID:23644786

Carvalho, W D; Adania, C H; Esbérard, C E L

2013-02-01

487

Crustal evolution between 2.0 and 3.5 Ga in the southern Gavião block (Umburanas-Brumado-Aracatu region), São Francisco Craton, Brazil: A 3.5-3.8 Ga proto-crust in the Gavião block?  

NASA Astrophysics Data System (ADS)

The main evolution of the Gavião block in the Umburanas-Brumado-Aracatu region, in the state of Bahia, is defined by several sets of tonalitic-trondhjemitic and granodioritic gneisses emplaced during the Paleoarchean. The juvenile Bernada gneisses are emplaced at 3386 ± 9 Ma (SHRIMP zircon age). The Aracatu gneisses, probably derived from the partial melting of ca 3.4 Ga gneisses, are emplaced at 3325 ± 16 Ma. They contain inherited zircon dated at 3366 ± 15 Ma in the range of ages obtained for the juvenile Bernada gneisses. Furthermore, one core in these zircons provides an age of 3487 ± 9 Ma, which is the oldest xenocryst found in the Gavião block. A Neoarchean alkaline granite was emplaced at 2693 ± 5 Ma (Serra de Eixo gneiss) and corresponds to a major crustal reworking stage. All of these rocks were metamorphosed and melted at ca 2.0 Ga, as recorded by monazite ages (EPMA and La-ICPMS) in diatexitic Archean gneisses (Aracatu) and Paleoproterozoic granites (Umburanas). The occurrence of a proto-crust ca 3.5 Ga or older in the Gavião block is discussed based on inherited zircon ages and Sm-Nd isotope signatures of the Archean gneisses.

Santos-Pinto, Marilda; Peucat, Jean-Jacques; Martin, Hervé; Barbosa, Johildo S. F.; Fanning, C. Mark; Cocherie, Alain; Paquette, Jean-Louis

2012-12-01

488

Study of interplanetary structure plasma parameters and ground cosmic ray modulation  

NASA Astrophysics Data System (ADS)

Interplanetary coronal mass ejections (ICMEs) are gigantic clouds of ionized gas launched from the Sun. These structures populate the interplanetary medium, frequently hit the planets. Depending on their characteristic and orientation, they may transfer their energy which is necessary to cause the geomagnetic storms, to the Earth's magnetosphere. ICMEs can be studied according to the variability of interplanetary magnetic field (IMF) and plasma parameters, such as, field intensity, direction, proton density (Np ), proton speed (VP ), radial component of proton temperature (Tp ), and plasma beta (?) which is defined as the ratio between thermal pressure and magnetic pressure. By using the minimum variance analysis (MVA) method, it is possible to identify the plane of maximum variance of the magnetic field data sets, and the eigenvector normal corresponding to the axis of the magnetic clouds. This allows to obtain the azimuthal (?k ) and inclination (?k ) axis orientation in relation to the ecliptic plane. The objective of this work is to study these ICME characteristics and their relation with modulation of ground level cosmic rays. To do this, IMF and plasma data from the Advanced Composition Explorer (ACE) spacecraft, and >50 GeV cosmic ray data from the multidirectional muon telescope installed in the Southern Space Observatory (OES/CRS/CIE/INPE - MCT) in São a Martinho da Serra, Brazil, will be used. Geomagnetic response to the interplanetary structures will be studied using the Dst index.

Kemmerich, Níkolas; Deives Kummer, Fabricio; Vinicius Dias Silveira, Marcos; Schuch, Nelson Jorge; Dal Lago, Alisson; Munakata, Kazuoki; Kuwabara, Takao; Echer, Ezequiel; Martins da Silva, Samuel; da Silva, Marlos; Braga, Carlos Roberto

489

Subsolidus REE partitioning between pyroxene and plagioclase in cumulative eucrites: An ion microprobe investigation  

SciTech Connect

In an attempt to elucidate the relationship between the cumulate eucrites and the noncumulate (main series) eucrites, we have examined the trace-element systematics of plagioclase grains that coexist with inverted pigeonites of the cumulative eucrites. Analyses were done by secondary ion mass spectrometry (SIMS). Plagioclase compositions are uniform in trace-element abundances within grains from each cumulate eucrite, but are variable between the four analyzed: Moama, Moore County, Serra de Mage, and Binda. Shapes of CI-normalized trace-element abundance patterns of the plagioclase grains of the cumulates are typical of plagioclase, showing a LREE-enriched pattern with positive Eu anomalies reflecting the site preference of Eu{sup 2+} in the feldspar structure. Using trace-element concentrations of the pyroxenes (orthopyroxene, pigeonite, augite; Pun and Papike, 1995) and plagioclase (this study), we calculate the subsolidus partition coefficients (Ds) for the REEs and Y between plagioclase and pyroxens in the examined cumulate eucrites. Trace-element systematics suggest that igneous trace-element signatures have been altered by subsolidus exchange for both the plagioclase and pyroxene. Calculated hypothetical parental-melt patterns determined form pyroxene and plagioclase are different and can differ by a factor of 4-5 for individual REEs. 36 refs., 4 figs., 4 tabs.

Pun, A.; Papike, J.J. [Univ. of New Mexico, Albuquerque, NM (United States); Layne, G.D. [Woods Hole Ocean