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1

Identification and seasonal variation of atmospheric organic pollutants in Campos dos Goytacazes, Brazil  

NASA Astrophysics Data System (ADS)

Organic aerosol samples collected during a 1 year study at three sites in the city of Campos dos Goytacazes, Rio de Janeiro, Brazil, were examined by gas chromatography and gas chromatography-mass spectrometry. Samples were acquired using a standard high-volume air sampler (Hi-Vol); extracts prepared and fractionated into aliphatic, aromatic and polar compounds. These compounds were quantified and their seasonal ambient concentration patterns discussed. High winter and low summer concentrations were observed for retene, polycyclic aromatic hydrocarbons and total suspended particulate matter (TSP), with a seasonal (winter) peak for all compounds studied. The higher concentrations observable from May to September may result from crop burning processes, which occur in the sugarcane plantations, mainly during this part of the year. The studied sites may be considered unpolluted as concentrations of benzo[a]pyrene and benzene were lower than the regulation lower limits. On the other hand, two sites were considered polluted by TSP determination.

de Almeida Azevedo, Débora; dos Santos, Celeste Yara Moreira; de Aquino Neto, Francisco Radler

2

Use of elephant grass for energy production in Campos dos Goytacazes-RJ, Brazil.  

PubMed

Elephant grass is a tropical forage plant widely distributed throughout Brazil. It was first exclusively used in the livestock sector as cattle feed. The grass is characterized by its high productivity and photosynthetic capacity and is considered as an alternative source of renewable energy. Here, we estimated the general combining ability of the parents and specific combining ability of the hybrids based on morpho-agronomic biomass-quality traits. The experiment was conducted in a randomized block design with 3 replicates. The diallel was composed of 16 hybrids and 2 groups of genitors. In the diallel analysis of variance, we observed a significant difference among treatments. A significant difference was observed among genitors for dry matter production (DMP). For the general combining ability of group 1, the traits leaf blade width, DMP, height, percentage of neutral detergent fiber, percentage of hemicellulose, percentage of lignin, percentage of acid detergent fiber, and percentage of cellulose were significant. For the estimates of general combining ability of DMP, parents Porto Rico 534-B, Vruckwona, Taiwan A-146, and Mercker S. E. A. were 0.4748, 3.2819, 1.1659, and 0.4317. The parents of Mercker S. E. A. and Porto Rico 534-B produced the highest percentage of detergent fiber and percentage of lignin with values of 0.1482 and 0.0856. Thus, parents Vruckwona, Porto Rico 534-B, and Taiwan A-146 are promising for integration into breeding programs. The best hybrid combinations for DMP were 1 x 5, 1 x 8, 2 x 6, 3 x 7, and 4 x 5. PMID:25526210

Daher, R F; Souza, L B; Gravina, G A; Machado, J C; Ramos, H C C; Silva, V Q R; Menezes, B R S; Schneider, L S A; Oliveira, M L F; Gottardo, R D

2014-01-01

3

Effect of Meteorological Phenomena in Measures of Background Radiation X and Gamma Rays in São José dos Campos, SP, Brazil  

NASA Astrophysics Data System (ADS)

The objective of this work was to perform a study on the influence of meteorological phenomena on the background radiation X and gamma rays in São José dos Campos, SP, Brazil on the last three years. For this, we performed the monitoring of the integrated radiations and also of the main meteorological parameters (rainfall, relative humidity, temperature and pressure) daily without interruptions and time resolution of one minute. Measurements of X and gamma radiation in the range of energies from 30 keV to 10 MeV, were carried out using a scintillator crystal of sodium iodide activated with Tallium [NaI(Tl)] coupled to a photomultiplier, with energy resolution of 15%. Rainfall, atmospheric pressure, temperature, and relative humidity were recorded using sensors coupled to a five-channel specific data logger. By correlating the data from the measurements of intensity of X and gamma radiations with the meteorological parameters, it was found that atmospheric precipitation with or without electric discharges phenomenon that was affected more in the spectrum of background radiation profile. Some of the reasons why these changes occur in the background profile are due the presence of environmental radon gas that is drawn to the surface during the occurrences of local rainfall. During dry periods, the spectra of X and gamma radiations showed a daily cycle (24 hour). In relation to relative humidity, temperature and pressure, it was found that these parameters had negligible influence on the profile changes of the background radiation in São José dos Campos, SP, Brazil.

Gomes, Marcelo; Spjeldvik, Walther; Gusev, Anatoly; Alves, Mauro; Martin, Inacio; Pinto, Marcos; Ferro, Marco A.; Concei, Flavio

4

Molecular Characterization of Human Pathogenic Bunyaviruses of the Nyando and Bwamba/Pongola Virus Groups Leads to the Genetic Identification of Mojuí dos Campos and Kaeng Khoi Virus  

PubMed Central

Background Human infection with Bwamba virus (BWAV) and the closely related Pongola virus (PGAV), as well as Nyando virus (NDV), are important causes of febrile illness in Africa. However, despite seroprevalence studies that indicate high rates of infection in many countries, these viruses remain relatively unknown and unstudied. In addition, a number of unclassified bunyaviruses have been isolated over the years often with uncertain relationships to human disease. Methodology/Principal Findings In order to better understand the genetic and evolutionary relationships among orthobunyaviruses associated with human disease, we have sequenced the complete genomes for all 3 segments of multiple strains of BWAV (n?=?2), PGAV (n?=?2) and NDV (n?=?4), as well as the previously unclassified Mojuí dos Campos (MDCV) and Kaeng Khoi viruses (KKV). Based on phylogenetic analysis, we show that these viruses populate 2 distinct branches, one made up of BWAV and PGAV and the other composed of NDV, MDCV and KKV. Interestingly, the NDV strains analyzed form two distinct clades which differed by >10% on the amino acid level across all protein products. In addition, the assignment of two bat-associated bunyaviruses into the NDV group, which is clearly associated with mosquito-borne infection, led us to analyze the ability of these different viruses to grow in bat (RE05 and Tb 1 Lu) and mosquito (C6/36) cell lines, and indeed all the viruses tested were capable of efficient growth in these cell types. Conclusions/Significance On the basis of our analyses, it is proposed to reclassify the NDV strains ERET147 and YM176-66 as a new virus species. Further, our analysis definitively identifies the previously unclassified bunyaviruses MDCV and KKV as distinct species within the NDV group and suggests that these viruses may have a broader host range than is currently appreciated. PMID:25188437

Groseth, Allison; Mampilli, Veena; Weisend, Carla; Dahlstrom, Eric; Porcella, Stephen F.; Russell, Brandy J.; Tesh, Robert B.; Ebihara, Hideki

2014-01-01

5

Multi-locus DNA sequencing of Toxoplasma gondii isolated from Brazilian pigs identifies genetically divergent strains  

Technology Transfer Automated Retrieval System (TEKTRAN)

Five Toxoplasma gondii isolates (TgPgBr1-5) were isolated from hearts and brains of pigs freshly purchased at the market of Campos dos Goytacazes, Northern Rio de Janeiro State, Brazil. Four of the five isolates were highly pathogenic in mice. Four genotypes were identified. Multi-locus DNA sequenci...

6

Highly Endemic, Waterborne Toxoplasmosis in North Rio de Janeiro State, Brazil  

Microsoft Academic Search

In Campos dos Goytacazes, northern Rio de Janeiro state, Brazil, reports of uveitis consistent with toxoplasmosis led to a survey of the prevalence and risk factors for Toxoplasma gondii infection in 1997-1999. The survey population was selected randomly from schools, randomly chosen communities, and an army battalion. Serum samples from 1,436 persons were tested. With results adjusted for age, 84%

Lílian Maria Garcia Bahia-Oliveira; Jeffrey L. Jones; Juliana Azevedo-Silva; Cristiane C. F. Alves; Fernando Oréfice; David G. Addiss

2003-01-01

7

PREVALENCE OF TOXOPLASMA GONDII IN CHICKENS FROM A HIGHLY ENDEMIC AREA TO HUMANS IN SOUTHERN BRAZIL  

Technology Transfer Automated Retrieval System (TEKTRAN)

The prevalence of Toxoplasma gondii in free range chickens from Campos dos Goytacazes, Rio de Janeiro State, Brazil, was examined to evaluate environmental contamination by oocysts. Antibodies against T. gondii were assayed by the modified agglutination test (MAT) in sera of chickens. Antibodies a...

8

HYDROMECHANICAL FACTORS CONTROLLING THE CREEPING CAMPO VALLEMAGGIA LANDSLIDE  

E-print Network

HYDROMECHANICAL FACTORS CONTROLLING THE CREEPING CAMPO VALLEMAGGIA LANDSLIDE Luca Bonzanigo The Campo Vallemaggia landslide is located in the crystalline penninic nappes of the Canton Ticino and divides the landslide body into distinct blocks, the Campo Vallemaggia block and the Cimalmotto block (Fig

9

Teorias Topologicas Cuanticas de Campos para Principiantes  

E-print Network

Teor´ias Topol´ogicas Cu´anticas de Campos para Principiantes ´o The Unreasonable Effectiveness #12;Teor´ia de Yang-Mills - Ecuaciones Supongamos que E Mn es un G-haz vectorial sobre una n electrodin´amica cl´asica. #12;Teor´ia de Yang-Mills - Simetr´ias Yang-Mills es un ejemplo de una teor´ia de

10

Colonial Memory and the Crime of Rhetoric: Pedro Albizu Campos  

ERIC Educational Resources Information Center

Dr. Albizu Campos was a Harvard-educated Puerto Rican politician who was sentenced to eighty years of imprisonment for what he said--sedition. He was called "el Maestro," a powerful speaker, with thousands gathering to listen to his deliberative rhetoric for freedom. He urged the people to reclaim their cultural history and national symbols, like…

Villanueva, Victor

2009-01-01

11

Sistemas Correctores de Campo Para EL Telescopio Cassegrain IAC80  

NASA Astrophysics Data System (ADS)

El proyecto de instrumentación de mayor importancia que ha tenido el Instituto de Astrofisica de Canarias en los últimos afios ha sido el diseflo y construcción del te1escopio IAC8O. Este requería del esfuerzo con junto en mec´nica, óptica y electrónica, lo que facilitó la estructuración y el crecimiento de los respectivos grupos de trabajo, que posteriormente se integraron en departamentos En su origen (1977), el telescopio IAC80 fue concebido como un sistema clásico tipo Cassegrain, con una razón focal F/i 1.3 para el sistema Casse grain y una razón focal F/20 para el sistema Coudé. Posteriormente, aunque se mantuvo la filosofia de que el sistema básico fuera el F/11.3, se consideró conveniente el diseño de secundarios para razones focales F/16 y F/32, y se eliminó el de F/20. Sin embargo, dada la importancia relativa que un foco estrictamente fotográfico tiene en un telescopio moderno, diseñado básicamente para fotometría fotoeléctrica y con un campo util mínimamente de 40 minutos de arco, se decídió Ilevar a cabo el diseño de un secundario F/8 con un sistema corrector de campo, pero que estuviera formado únicamente por lentes con superficies esféricas para que asl su construcción fuera posible en España ó en México. La creciente utilización de detectores bidimensionales para fines de investigación astron6mica y la viabilidad de que en un futuro cercano éstos tengan un área sensible cada vez mayor, hicieron atractiva la idea de tener diseñado un sistema corrector de campo para el foco primario (F/3), con un campo útil mínimo de un grado, y también con la limitante de que sus componentes tuvieron sólamente supérficies esféricas. Ambos diseños de los sis-temas correctores de campo se llevaron a cabo, en gran medida, como parte de un proyecto de colaboración e intercambio en el área de diseño y evaluación de sistemas ópticos.

Galan, M. J.; Cobos, F. J.

1987-05-01

12

[Life and work at the petroleum industry in Campos Basin].  

PubMed

In this paper we detach the subject of confinement as a central axle in the activity at maritime oil platforms of Campos Basin, in north region of the Rio de Janeiro state. This work reality that determines for offshore workers, as they are known, a rupture between two different moments in there lives: the period of fourteen days in the sea and the life in land per twenty one days. We adopt as material empiricist, the research carried out on this universe, detaching here the way as these professionals understand the conditions of confined work in which they are submitted. PMID:20069186

Leite, Rose Mery dos Santos Costa

2009-01-01

13

A model for petroleum biodegradation in the Campos Basin, Brazil  

SciTech Connect

The Campos Basin covers about 100,000 km{sup 2} along Brazil`s southeastern passive margin and is the most productive offshore Brazilian basin. Geochemical analyses of oils and formation waters indicate that the oils were deeply biodegraded during the first events of migration due to many cycles of meteoric water influx into the basin caused by sea level variations. Since the source rocks are still generating hydrocarbons, some reservoirs present a mixture of previously trapped biodegraded oil and nonbiodegraded oil that migrated to the same reservoirs after the end of the meteoric water infiltration event.

Cerqueira, J.R.; Ferreira, J.C. [Petrobras Research Center, Rio de Janeior (Brazil)

1996-10-01

14

76 FR 29261 - Notice of Intent To Prepare an Environmental Impact Statement for the Proposed Campo Wind Energy...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Impact Statement for the Proposed Campo Wind Energy Project, San Diego County, CA...EIS) for the proposed Campo Shu'luuk Wind Project, located on the Campo Indian Reservation...California. Construction of the Shu'luuk Wind Project within the Campo Reservation...

2011-05-20

15

Infrared inspection applied to offshore platforms: Petrobras experience at Campos Basin  

Microsoft Academic Search

Bacia de Campos (Rio de Janeiro - Brazil) is one of the biggest offshore petroleum fields in the world today. In June 2001, Bacia de Campos, having more than 490 oil wells, 34 offshore platforms and 7 modified ships in operation, reached 1,3 million barrels\\/day. If compared to OPEP countries only nine of them got an average production higher than

Edson A. Verdini; Attilio B. Veratti

2002-01-01

16

Exotic accessory minerals in layered chromities of the Campo Formoso complex (Brazil)  

Microsoft Academic Search

The Campo Formoso stratiform intrusive complex, in Bahia State, Brazil, considered to be of Paleoproterozoic age, consists of a tabular body of ultramafic rocks about 40 km long and 100-1100 m wide. Thick horizons of chromitite are exploited and the deposits are the richest in Brazil. The complex was intruded by the Campo Formoso calc-alkaline batholith, emplaced by the result

Federica Zaccarini; Giorgio Garuti; Robert Martin

2006-01-01

17

``Campo del Cielo'' Meteorites: Astronomical Heritage and Cultural Colonialism  

NASA Astrophysics Data System (ADS)

In the province of Chaco, Argentina, there is a very unique dispersion of metallic meteorites called ``Campo del Cielo''. One of the meteoric fragments of this dispersion, the meteorite called ``El Chaco'', consisting of 37 tons, is the second heaviest in the world. These meteorites are of great importance to the worldview of the Moqoit, aboriginal people that inhabit this region. For the local Creole population the meteorites are also relevant, that's why they have being cited in numerous documents and reports since the colonial period. During the first months of 2012, two Argentine artists and the Artistic Director of the German contemporary art exhibition called dOCUMENTA (13) tried to move ``El Chaco'' meteorite to Germany in order to exhibit it as an artistic object. Due to the fact that moving the meteorite could have a negative impact according to the Moqoit cosmology and that they were not able to participate in the decision they begun a manifestation against the movement of El Chaco. The opposition made by aboriginal communities and experts in cultural astronomy was able to stop the transfer. The whole process and its impact on the local community have promoted a deep discussion about art, science and cultural colonialism. In this paper we aim to address this debate and its consequences. This will allow us to think about contemporary forms of colonialism that are hidden in many scientific and artistic projects. Furthermore, we aim to debate about the most effective ways of protecting astronomical heritage in the Third World.

López, Alejandro Martín; Altman, Agustina

2012-09-01

18

"Ask Argonne" - Edwin Campos, Research Meteorologist, Part 1  

ScienceCinema

Dr. Edwin Campos is a Research Meteorologist at Argonne National Laboratory. For the last two decades, he has studied weather, and in particular, clouds. Clouds are one of the most uncertain variables in climate predictions and are often related to transportation hazards. Clouds can also impact world-class sporting events like the Olympics. You may have questions about the role of clouds, or weather, on our daily lives. How is severe weather monitored for airports? What is the impact of clouds and wind on the generation of electricity? One of the projects Edwin is working on is short-term forecasting as it relates to solar electricity. For this, Edwin's team is partnering with industry and academia to study new ways of forecasting clouds, delivering technologies that will allow the incorporation of more solar power into the electric grid. Post a question for Edwin as a comment below, and it might get answered in the follow-up video we'll post in the next few weeks.

Edwin Campos

2013-06-10

19

"Ask Argonne" - Edwin Campos, Research Meteorologist, Part 1  

SciTech Connect

Dr. Edwin Campos is a Research Meteorologist at Argonne National Laboratory. For the last two decades, he has studied weather, and in particular, clouds. Clouds are one of the most uncertain variables in climate predictions and are often related to transportation hazards. Clouds can also impact world-class sporting events like the Olympics. You may have questions about the role of clouds, or weather, on our daily lives. How is severe weather monitored for airports? What is the impact of clouds and wind on the generation of electricity? One of the projects Edwin is working on is short-term forecasting as it relates to solar electricity. For this, Edwin's team is partnering with industry and academia to study new ways of forecasting clouds, delivering technologies that will allow the incorporation of more solar power into the electric grid. Post a question for Edwin as a comment below, and it might get answered in the follow-up video we'll post in the next few weeks.

Edwin Campos

2013-05-08

20

SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES E. Coelho, A. Campos Costa  

E-print Network

regulation (EC8) 2. Structural redesign (retrofitting and strengthening) 3. Vulnerability and Seismic RiskNESDE 2013 SEISMIC ENGINEERING RESEARCH INFRASTRUCTURES FOR EUROPEAN SYNERGIES E. Coelho, A. Campos Contribution to Global Seismic Performance Approaches SERIES Concluding Workshop - Joint with US

21

An organisational adaptation simulator for P2P Jordi Campos1  

E-print Network

An organisational adaptation simulator for P2P networks Jordi Campos1 , Marc Esteva2 , Maite López. Organisational centred multi-agent systems (MAS) have proved to be eective to regulate agents' activities, and therefore, adapting the whole organisation becomes key. This paper presents a MAS simulator devoted to test

López-Sánchez, Maite

22

LOS CAMPOS DE GOLF EN ESPAÑA Y SUS REPERCUSIONES EN EL SECTOR TURÍSTICO  

Microsoft Academic Search

Palabras clave: campos de golf, España, turismo. SUMMARY Golf has been one of the fastest-growing sports in Spain over the last two decades: the number of courses has tripled and the number of registered golfers has increased almost 18 times. The courses are distributed all over the country although the highest concentration continues to be found near the Mediterranean coast

Francisco Feo Parrondo

2001-01-01

23

New Model Armies: Re-contextualizing The Camp in Margaret Cavendish's Bel in Campo  

Microsoft Academic Search

This paper examines the Amazonian army in Margaret Cavendish's Bell in Campo, a two-part closet play that stages divisions in England as a war between two allegorical entities, Faction and Reformation. Arguing against previous readings of the play's third armed collective as merely the female instruments of Caroline revisionism, I consider its pragmatic and pointed acknowledgment of the increasingly revolutionary

Vimala C. Pasupathi

2011-01-01

24

New Model Armies: Re-contextualizing The Camp in Margaret Cavendish's Bel in Campo  

Microsoft Academic Search

: This paper examines the Amazonian army in Margaret Cavendish's Bell in Campo, a two-part closet play that stages divisions in England as a war between two allegorical entities, Faction and Reformation. Arguing against previous readings of the play's third armed collective as merely the female instruments of Caroline revisionism, I consider its pragmatic and pointed acknowledgment of the increasingly

Vimala C. Pasupathi

2011-01-01

25

Hydrology, morphology and sedimentology of the Campos continental margin, offshore Brazil  

Microsoft Academic Search

Slope sand deposits have accumulated from at least the Neogene to the Present on the southeastern Brazilian continental margin (Campos Basin area). This region shows sand accumulations concentrated on the upper portion and on the base of the continental slope with a middle to lower slope bypass zone. A synthesis of preliminary results, supported by recent cores, high-resolution geophysical surveys,

A. R. Viana; J. C. Faugeres; R. O. Kowsmann; J. A. M. Lima; L. F. G. Caddah; J. G. Rizzo

1998-01-01

26

Lagoa Feia Formation (Lower Cretaceous), Campos basin, offshore Brazil - Rift-Valley-Stage Lacustrine carbonate reservoirs  

Microsoft Academic Search

The Lagoa Feia Formation, buried in excess of 3000 m, is the exploration frontier of the prolific Campos basin. It contains the source beds of all the basin's oil in addition to having its own potential carbonate reservoirs. The faulted margins of the basin fed a system of alluvial fans, sand flats, and mud flats. Alternating dry and rainy period

R. Bertani; T. Petrobras; A. V. Carozzi

1985-01-01

27

Glacial changes and glacier mass balance at Gran Campo Nevado, Chile during recent decades  

Microsoft Academic Search

Within the framework of the program Global Land Ice Measurements from Space (GLIMS) a glacier inventory of the Peninsula Muñoz Gamero in the southernmost Andes of Chile (53°S) has been generated using aerial photopgrahy and Landsat Thematic Mapper imagery. The Peninsula is partly covered by the ice cap of the Gran Campo Nevado (GCN), including several outlet glaciers plus some

C. Schneider; M. Schnirch; R. Kilian; C. Acuña; G. Casassa

2003-01-01

28

La Neurociencia Computacional hoy: II. El Proyecto Blue Brain, un ejemplo muy representativo en el campo  

E-print Network

La Neurociencia Computacional hoy: II. El Proyecto Blue Brain, un ejemplo muy representativo en el Computacional, simulación por ordenador, procesos neurales, cerebro, proyecto Blue Brain. La Neurociencia Computacional es un campo reciente, pero bien establecido dentro de las Neurociencias. En un primer artículo

Cortes, Jesus

29

Anais II Congresso Brasileiro de Unidades de Conservao. Campo Grande-MS, Brasil. 2: 706-714, 2000. POSSVEL INFLUNCIA DAS MUDANAS DE PAISAGEM NO PARQUE  

E-print Network

NATIONAL PARK ON THE DIET OF THE MANED WOLF (CHRYSOCYON BRACHYURUS) DIEGO QUEIROLO1 JOSÃ? CARLOS MOTTA transformed in "campo sujo" and "campo cerrado", rising a change in the food habits of the maned wolf

Motta Junior, Jose Carlos

30

Cheirimedon foscae sp. nov. (Amphipoda: Lysianassidae: Tryphosinae) from the deep sea Campos Basin, Southwestern Atlantic Ocean.  

PubMed

A new species of lysianassid amphipod belonging to the genus Cheirimedon was collected on the continental slope of the Campos Basin, the largest oil reserve in Brazilian waters. This is the first record of the genus Cheirimedon from the Atlantic Ocean, which was previously restricted to the Antarctic and Tasmanian sea. The new species is fully illustrated and compared with related species. Additionally, a world key to the Cheirimedon species is provided.  PMID:25544211

Siqueira, Silvana Gomes L; Serejo, Cristiana S

2014-01-01

31

Preliminary statistical studies concerning the Campos RJ sugar cane area, using LANDSAT imagery and aerial photographs  

NASA Technical Reports Server (NTRS)

The two phase sampling technique was applied to estimate the area cultivated with sugar cane in an approximately 984 sq km pilot region of Campos. Correlation between existing aerial photography and LANDSAT data was used. The two phase sampling technique corresponded to 99.6% of the results obtained by aerial photography, taken as ground truth. This estimate has a standard deviation of 225 ha, which constitutes a coefficient of variation of 0.6%.

Parada, N. D. J. (principal investigator); Costa, S. R. X.; Paiao, L. B. F.; Mendonca, F. J.; Shimabukuro, Y. E.; Duarte, V.

1983-01-01

32

Mineral nutrition of campos rupestres plant species on contrasting nutrient-impoverished soil types.  

PubMed

In Brazil, the campos rupestres occur over the Brazilian shield, and are characterized by acidic nutrient-impoverished soils, which are particularly low in phosphorus (P). Despite recognition of the campos rupestres as a global biodiversity hotspot, little is known about the diversity of P-acquisition strategies and other aspects of plant mineral nutrition in this region. To explore nutrient-acquisition strategies and assess aspects of plant P nutrition, we measured leaf P and nitrogen (N) concentrations, characterized root morphology and determined the percentage arbuscular mycorrhizal (AM) colonization of 50 dominant species in six communities, representing a gradient of soil P availability. Leaf manganese (Mn) concentration was measured as a proxy for carboxylate-releasing strategies. Communities on the most P-impoverished soils had the highest proportion of nonmycorrhizal (NM) species, the lowest percentage of mycorrhizal colonization, and the greatest diversity of root specializations. The large spectrum of leaf P concentration and variation in root morphologies show high functional diversity for nutritional strategies. Higher leaf Mn concentrations were observed in NM compared with AM species, indicating that carboxylate-releasing P-mobilizing strategies are likely to be present in NM species. The soils of the campos rupestres are similar to the most P-impoverished soils in the world. The prevalence of NM strategies indicates a strong global functional convergence in plant mineral nutrition strategies among severely P-impoverished ecosystems. PMID:25425486

Oliveira, Rafael S; Galvão, Hugo C; de Campos, Mariana C R; Eller, Cleiton B; Pearse, Stuart J; Lambers, Hans

2015-02-01

33

Infrared inspection applied to offshore platforms: Petrobras experience at Campos Basin  

NASA Astrophysics Data System (ADS)

Bacia de Campos (Rio de Janeiro - Brazil) is one of the biggest offshore petroleum fields in the world today. In June 2001, Bacia de Campos, having more than 490 oil wells, 34 offshore platforms and 7 modified ships in operation, reached 1,3 million barrels/day. If compared to OPEP countries only nine of them got an average production higher than 1 million barrels/day in 2000, which means it can be placed on the 10th position in the rank of oil producers. In this context this work aims not only to show the results achieved within the introduction of thermographic inspections in offshore oil production (platforms and ships), but also the financial results (ROI - Return of Investment) considering the use of this particular technique. Bacia de Campos got a ROI around 7 million dollars in the last 4 years, which means a hundred times higher than the total cost of thermographic services in the same period. As far as we know this is one of the best results already reported in the world. We also present the methodology applied to analyze thermal anomalies in electrical components and data management software, including advanced Digital Reports sent via Internet.

Verdini, Edson A.; Veratti, Attilio B.

2002-03-01

34

A low-cost localization system based on Artificial Landmarks Claudio dos S. Fernandes, Mario F. M. Campos and Luiz Chaimowicz  

E-print Network

in the environment ceiling. Although the use of artificial landmarks restricts the applicability of this methodology the possibility of refining its localization by using a GPS sensor. However, for navigation within indoor environments, which is the main focus of the present work, this type of sensor cannot be used, which

Chaimowicz, Luiz

35

Crustal structure of the southeastern Brazilian margin, Campos Basin, from aeromagnetic data: New kinematic constraints  

NASA Astrophysics Data System (ADS)

The continental and adjacent marginal features along southeast Brazil were investigated, focusing on the basement structural relationships between onshore and offshore provinces. Lateral and vertical variations in the magnetic anomalies provided a good correlation with the regional tectonic features. The sin-rift dykes and faults are associated with the magnetic lineaments and lie sub parallel to the Precambrian N45E-S45W basement structure of the Ribeira Belt, but orthogonally to the Cabo Frio Tectonic Domain (CFTD) basement, implying that: (1) the upper portion of the continental crust was widely affected by Mesozoic extensional deformation; and (2) tectonic features related to the process of break up of the Gondwana at the CFTD were form regardless of the preexisting structural basement orientation being controlled by the stress orientation during the rift phase. The deep crustal structure (5 km depth) is characterized by NE-SW magnetic "provinces" related to the Ribeira Belt tectonic units, while deep suture zones are defined by magnetic lows. The offshore Campos structural framework is N30E-S30W oriented and resulted from a main WNW-ESE direction of extension in Early Cretaceous. Transfer zones are represented by NW-SE and E-W oriented discontinuities. A slight difference in orientation between onshore (N45E) and offshore (N30E) structural systems seems to reflect a re-orientation of stress during rifting. We proposed a kinematical model to explain the structural evolution of this portion of the margin, characterized by polyphase rifting, associated with the rotation of the South American plate. The Campos Magnetic High (CMH), an important tectonic feature of the Campos Basin corresponds to a wide area of high crustal magnetization. The CMH wass interpreted as a magmatic feature, mafic to ultramafic in composition that extends down to 14 km depth and constitutes an evidence of intense crustal extension at 60 km from the coast.

Stanton, N.; Schmitt, R.; Galdeano, A.; Maia, M.; Mane, M.

2010-07-01

36

Middle and late Pleistocene glaciations in the Campo Felice Basin (central Apennines, Italy)  

NASA Astrophysics Data System (ADS)

The present paper refers to research conducted in the tectonic-karst depression of Campo Felice in the central Apennines (Italy), in which glacial, alluvial and lacustrine sediments have been preserved. Stratigraphic interpretations of sediments underlying the Campo Felice Plain are based on evidence obtained from nine continuous-core boreholes. The boreholes reach a depth of 120 m and provide evidence of five sedimentation cycles separated by erosion surfaces. Each cycle is interpreted as an initial response to a mainly warm stage, characterized by low-energy alluvial and colluvial deposition, pedogenesis, and limited episodes of marsh formation. In turn, a mainly cold stage follows during which a lake formed, and glaciers developed and expanded, leading to deposition of glacial and fluvioglacial deposits. The chronological framework is established by eleven accelerator mass spectrometer 14C ages and three 39Ar- 40Ar ages on leucites from interbedded tephra layers. These age determinations indicate five glacial advances that respectively occurred during marine oxygen isotope stages 2, 3-4, 6, 10 and 14.

Giraudi, Carlo; Bodrato, Giulia; Lucchi, Marianna Ricci; Cipriani, Nicola; Villa, Igor M.; Giaccio, Biagio; Zuppi, Giovanni M.

2011-01-01

37

Polycyclic aromatic hydrocarbons and other selected organic compounds in ambient air of Campo Grande City, Brazil  

NASA Astrophysics Data System (ADS)

Fourteen samples of particulate matter and semi-volatile organic compounds were collected during 6 months in the city of Campo Grande, South Mato Grosso State, Brazil. Particle-bound polycyclic aromatic hydrocarbons (PAHs) were collected on Fluoropore PTFE filters and gas-phase PAHs were collected into sorbent tubes with XAD-2 resin. Both types of samples were extracted with a dichloromethane/methanol mixture (4:1 v/v), then the extracts were subjected to gas chromatography-mass spectrometry (GC-MS) analysis. PAHs, oxidized PAH (oxy-PAHs), phenols and methoxyphenols were identified by use of GC retention indices and MS files. The average value obtained for the sum of 15 PAHs was 21.05 ng m -3 (range: 8.94-62.5 ng m -3). The presence of specific tracers and calculations of characteristic ratios (e.g. [Phe]/[Phe]+[Ant]) were used to identify the sources of the emissions of PAHs in the atmospheric samples. Levoglucosan (the anhydride of ?-glucose), retene (1-methyl-7-isopropylphenanthrene) and methoxyphenols (derivatives of syringol and guaiacol) and tracers for wood burning were identified. This study demonstrates that biomass burning from the rural zone is the main source of PAHs and emissions of other substances in the investigated site of Campo Grande.

Ré-Poppi, Nilva; Santiago-Silva, Mary

38

[The archeology of slavery on Jesuit fazendas: first research notes].  

PubMed

These preliminary research notes present theoretical and methodological questions regarding a recently inaugurated investigation in historical archeology that intends to analyze daily life under slavery, demographic regimes, cultural practices, and so on. A survey of archeological sites on former 'senzalas' (slave quarters) and slave-owning fazendas in the Paraíba Valley and northern part of the state of Rio de Janeiro is currently in progress. With the cooperation of historians, archeologists, and anthropologists, records of the material culture of slave populations, which originally comprised indigenes and later Africans, are being located at excavations underway on the fazenda that is part of the Jesuit school in Campos dos Goytacazes, Rio de Janeiro, first run by the clergy and later by members of the laity in the seventeenth, eighteenth, and nineteenth centuries. PMID:23370111

Symanski, Luís Cláudio P; Gomes, Flávio

2012-12-01

39

Sintesi, caratterizzazione e proprietà ottiche di derivati bisimmidici simmetrici ed asimmetrici del perilene per applicazione nel campo delle celle fotovoltaiche organiche.  

E-print Network

??I derivati perilenici tetracarbossi-bisimmidici sono di particolare interesse nel campo delle celle fotovoltaiche organiche in quanto costituiscono materiali semiconduttori organici di tipo n con elevata… (more)

RAMANITRA, HASINA HARIMINO

2012-01-01

40

Ostracodes from the Aptian-Santonian of the Santos, Campos and Espírito Santo basins, Brazil  

NASA Astrophysics Data System (ADS)

The Lower and Upper Cretaceous deposits from the Brazilian marginal basins present a rich and diversified fauna of ostracodes in continental, marine and mixohaline paleoenvironments. While the Cretaceous ostracodes from the northeastern region have already been the subject of many taxonomic and biostratigraphical studies, data from the southeastern basins are still scarce and restricted to the record of a few species. The present study represents a comprehensive contribution to the systematic knowledge of the Aptian-Santonian ostracodes from the Brazilian southeastern marginal basins. A total of 1045 cutting samples were analyzed from 10 wells drilled offshore in Santos, Campos and Espírito Santo basins. Thirty-eight ostracode taxa were recorded from different depositional environments, including the following six new species: Amphicytherura fragilis sp. nov., Brachycythere multidifferentis sp. nov., Fossocytheridea ballentae sp. nov., Fossocytheridea elegans sp. nov., Nigeroloxoconcha itanhaensis sp. nov. and Paracypris eniotmetos sp. nov.

Piovesan, Enelise Katia; Nicolaidis, Demétrio Dias; Fauth, Gerson; Viviers, Marta Claudia

2013-12-01

41

Radiogenic Xenon-129 in Silicate Inclusions in the Campo Del Cielo Iron Meteorite  

NASA Technical Reports Server (NTRS)

Iron meteorites present a challenge for the I-Xe dating technique because it is usually the inclusions, not metal, that contain radiogenic xenon and iodine. Silicate inclusions are frequent in only types IAB and IIE, and earlier studies of irons have demonstrated that I-Xe system can survive intact in these inclusions preserving valuable age information. Our previous studies of the I-Xe record in pyroxene grains from Toluca iron suggested an intriguing relationship between apparent I-Xe ages and (Mg+Fe)/Fe ratios. The I-Xe system in K-feldspar inclusions from Colomera (IIE) had the fingerprint of slow cooling, with an indicated cooling rate of 2-4 C/Ma. Here we present studies of the iodine-xenon system in a silicate-graphite-metal (SiGrMet) inclusion of the IA Campo del Cielo iron meteorite from the collection of the Museum of Natural History in Vienna.

Meshik, A.; Kurat, G.; Pravdivtseva, O.; Hohenberg, C. M.

2004-01-01

42

Ciudad y campo americanos vistos desde el Consejo de Indias en Madrid (1570-1650) Guillaume Gaudin  

E-print Network

Ciudad y campo americanos vistos desde el Consejo de Indias en Madrid (1570-1650) Guillaume Gaudin and countryside seen from the Council of the Indies in Madrid (1570-1650) Guillaume Gaudin (*) Universidad de Toulouse, Francia guillaume.gaudin@univ-tlse2.fr Resumen: ¿Cómo consideraba la administración madrileña, es

Paris-Sud XI, Université de

43

"This School Is My Sanctuary": The Dr. Pedro Albizu Campos Alternative High School. JSRI Working Paper No. 57  

ERIC Educational Resources Information Center

Recent studies and personal narratives suggest a connection between the low academic achievement of Latina/o students in the United States to the lack of care they experience in schools. The author reports on a study he conducted of the Chicago-based Pedro Albizu Campos Alternative High School, focusing on the experiences of its students and…

Antrop-Gonzalez, Rene

2003-01-01

44

78 FR 2423 - Draft Environmental Impact Statement (DEIS) for the Proposed Shu'luuk Wind Project on the Campo...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Statement (DEIS) for the Proposed Shu'luuk Wind Project on the Campo Indian Reservation...Agency (EPA) for the Proposed Shu'luuk Wind Project in San Diego County, California...and operation of the proposed Shu'luuk Wind Project. Subsequent to the approval...

2013-01-11

45

UMA PROPOSTA PEDAGÓGICA PARA O USO DA MODELAGEM COMPUTACIONAL NO CURSO DE LICENCIATURA EM QUÍMICA DO CEFET CAMPOS  

Microsoft Academic Search

This study presents an experiment on the use of a simulation and modelling computer environment in the teaching of Physical Chemistry. The research was conducted with students attending the Chemistry Teaching program at Cefet Campos aiming at: examining the contribution of using Modellus in the teaching and learning process, promoting a cooperative and collaborative learning environment among students, and observe

Rodrigo Garrett da Costa

46

Pollination of Cambessedesia wurdackii in Brazilian Campo Rupestre Vegetation, with Special Reference to Crepuscular Bees  

PubMed Central

Cambessedesia wurdackii Martins (Myrtales: Melastomataceae) is presumably endemic to the Chapada Diamantina, Bahia State, Brazil. A majority of the species of this family are pollinated by diurnal bees that buzz the floral anthers to collect pollen. The present work examined the interactions between C. wurdackii and visiting bees, focusing on temporal, morphological, and behavioral features, especially in regards to the crepuscular bees Megalopta sodalis (Vachal) (Hymenoptera: Halictidae) and Ptiloglossa off. dubia Moure (Hymenoptera: Colletidae). The study was undertaken in an area of campo rupestre montane savanna vegetation located in the Chapada Diamantina Mountains of Bahia State, Brazil, between August/2007 and July/2008. Flowering in C. wurdackii occurred from April through July, with a peak in May. A total of 592 visits by diurnal and crepuscular bees to the flowers of C. wurdackii were recorded, with a majority of the visits made by M. sodalis and P. dubia (92%) near sunrise and sunset. The anthers of C. wurdackii are arranged in two tiers, which favors cross pollination. The morphological, temporal and behavioral characteristics of M. sodalis and P. dubia indicated that they were potential pollinators of C. wurdackii, in spite of the fact that the colorful and showy flowers of this species are more typical of a diurnal melittophilous pollination syndrome. PMID:22208813

Franco, Emanuella Lopes; Gimenes, Miriam

2011-01-01

47

[Work-related accidents on oil drilling platforms in the Campos Basin, Rio de Janeiro, Brazil].  

PubMed

The offshore oil industry is characterized by complex systems in relation to technology and organization of work. Working conditions are hazardous, resulting in accidents and even occasional full-scale catastrophes. This article is the result of a study on work-related accidents in the offshore platforms in the Campos Basin, Rio de Janeiro State. The primary objective was to provide technical back-up for both workers' representative organizations and public authorities. As a methodology, we attempt to go beyond the immediate causes of accidents and emphasize underlying causes related to organizational and managerial aspects. The sources were used in such a way as to permit classification in relation to the type of incident, technological system, operation, and immediate and underlying causes. The results show the aggravation of safety conditions and the immediate need for public authorities and the offshore oil industry in Brazil to change the methods used to investigate accidents in order to identify the main causes in the organizational and managerial structure of companies. PMID:11241934

Freitas, C M; Souza, C A; Machado, J M; Porto, M F

2001-01-01

48

Variation of surface ozone in Campo Grande, Brazil: meteorological effect analysis and prediction.  

PubMed

The effect of meteorological variables on surface ozone (O3) concentrations was analysed based on temporal variation of linear correlation and artificial neural network (ANN) models defined by genetic algorithms (GAs). ANN models were also used to predict the daily average concentration of this air pollutant in Campo Grande, Brazil. Three methodologies were applied using GAs, two of them considering threshold models. In these models, the variables selected to define different regimes were daily average O3 concentration, relative humidity and solar radiation. The threshold model that considers two O3 regimes was the one that correctly describes the effect of important meteorological variables in O3 behaviour, presenting also a good predictive performance. Solar radiation, relative humidity and rainfall were considered significant for both O3 regimes; however, wind speed (dispersion effect) was only significant for high concentrations. According to this model, high O3 concentrations corresponded to high solar radiation, low relative humidity and wind speed. This model showed to be a powerful tool to interpret the O3 behaviour, being useful to define policy strategies for human health protection regarding air pollution. PMID:24854500

Pires, J C M; Souza, A; Pavão, H G; Martins, F G

2014-09-01

49

Shear-strength signatures of mass movements, continental slope of Campos Basin, Brazil  

NASA Astrophysics Data System (ADS)

Downhole shear-strength profiles, obtained from cone-penetrometer and lab tests were tied to sedimentary facies from adjacent continuous cores. The geotechnical response of mass-transport deposits was investigated. In the Campos Basin, sediments have evacuated from the upper continental slope and have accumulated as folded deposits on the middle slope. Sediment removal is recognised by an abrupt step-like increase in shear-strength at the level of the unconformity. The folded deposits are characterised by a belly-shaped increase in shear-strength coinciding with a zone of intense lamination within the deposit, induced by internal shearing and fluid loss (strain hardening). In contrast, highly disintegrated muddy debris-flow deposits are indistinguishable, in terms of shear-strength, from normal hemipelagic slope sediments. Debris-flow tongues emanating from canyon mouths, which contain a significant amount of more consolidated mud clasts can however be differentiated from in situ sediments by their serrated signature and higher shear-strength.

Kowsmann, R. O.; da Costa, A. M.; Amaral, C. S.

2003-04-01

50

Environmentally associated ticks (Acari: Ixodidae) in Campo Grande, Mato Grosso do Sul, Brazil.  

PubMed

Herein, we report tick species found on wild and domestic animals and in the environment during a one-year sampling period at the Brazilian Farming Research Company beef cattle unit (Embrapa Beef Cattle), which is located within the urban area of Campo Grande, Mato Grosso do Sul, Brazil. From 55 wild hosts including six different species (Nasua nasua, Cebus spp., Cerdocyon thous, Myrmecophaga tridactyla, Tamandua tetradactyla and Dasyprocta aguti), 323 ticks were collected. Amblyomma ovale ticks were found solely on coatis, and Amblyomma nodosum was identified solely on anteaters. No ticks were found on capuchin monkeys. However, Amblyomma cajennense was found on all parasitized host species with the exception of capuchin monkeys. Giant anteaters displayed the highest infestation abundance, with a mean of 53 ticks?animal. Environmental sampling yielded 166 adult A. cajennense ticks. The tick species found on domestic animals (Rhipicephalus (Boophilus) microplus, R. sanguineus, Dermacentor nitens and A. cajennense) were those typically found on these hosts in Brazil. The most prevalent tick species, A. cajennense, was found on both wild and domestic animals and was also prevalent in the environment. Thus, this tick species is the primary vector that allows pathogens to bridge wild and domestic animals in the Cerrado. PMID:24252958

Garcia, Marcos Valério; Silva, Dayana Campelo da; Almeida, Robson Ferreira Cavalcante de; Cunha, Rodrigo Casquero; Matias, Jaqueline; Barros, Jacqueline Cavalcante; Andreotti, Renato; Szabó, Matias Pablo Juan

2013-01-01

51

Upwelling processes along a western boundary current in the Abrolhos-Campos region of Brazil  

NASA Astrophysics Data System (ADS)

Upwelling events observed from the years 2003 to 2011 were analyzed. Our focus was on the Abrolhos-Campos region (ACR, 15°S-23°S), which is located along the Brazilian Margin and influenced by a western boundary current, the Brazil Current (BC). Satellite sea surface temperature, National Centers for Environmental Prediction (NCEP) and Global Forecast System (GFS) wind data were used to complement the results of a high-resolution regional oceanic model to investigate the occurrence of and the mechanisms responsible for intense upwelling events in this region. These events were more frequent from 20°S to 23°S. Over 90% of the identified upwelling events were influenced by favorable wind stress. Surface Ekman transport was found to be more important for the region from Prado (17°S) to Marataízes (21°S), whereas upward Ekman pumping played a more important role from 22°S to 23°S. Current-driven upwelling processes associated with the location of the BC as well as its velocity and meso-scale activity were also analyzed. The results showed that these mechanisms are highly influenced by the local topography. Topographic effects exerted via the acceleration of the BC are more obvious in the southern ACR, while in the Prado region, BC cyclonic meanders tend to be more relevant. Moreover, eddy-driven upwelling increases in the southward direction after the passage of the Vitória-Trindade Ridge (20°S), an important submarine chain, which acts to constrain and modulate the southward flow of the BC.

Aguiar, A. L.; Cirano, M.; Pereira, J.; Marta-Almeida, M.

2014-08-01

52

Glacier inventory of the Gran Campo Nevado Ice Cap in the Southern Andes and glacier changes observed during recent decades  

Microsoft Academic Search

The Gran Campo Nevado (GCN) forms an isolated ice cap on the Península Muñoz Gamero (PMG) located 200 km to the south of the Southern Patagonia Icefield (SPI). We present a glacier inventory of the GCN made up by 27 drainage basins (in total 199.5 km2) and other small cirque and valley glaciers of the southern part of PMG (in total 53 km2).

Christoph Schneider; Michael Schnirch; César Acuña; Gino Casassa; Rolf Kilian

2007-01-01

53

Phylogenetic analysis of the microbial community in hypersaline petroleum produced water from the Campos Basin.  

PubMed

In this work the archaea and eubacteria community of a hypersaline produced water from the Campos Basin that had been transported and discharged to an onshore storage facility was evaluated by 16S recombinant RNA (rRNA) gene sequence analysis. The produced water had a hypersaline salt content of 10 (w/v), had a carbon oxygen demand (COD) of 4,300 mg/l and contains phenol and other aromatic compounds. The high salt and COD content and the presence of toxic phenolic compounds present a problem for conventional discharge to open seawater. In previous studies, we demonstrated that the COD and phenolic content could be largely removed under aerobic conditions, without dilution, by either addition of phenol degrading Haloarchaea or the addition of nutrients alone. In this study our goal was to characterize the microbial community to gain further insight into the persistence of reservoir community members in the produced water and the potential for bioremediation of COD and toxic contaminants. Members of the archaea community were consistent with previously identified communities from mesothermic reservoirs. All identified archaea were located within the phylum Euryarchaeota, with 98 % being identified as methanogens while 2 % could not be affiliated with any known genus. Of the identified archaea, 37 % were identified as members of the strictly carbon-dioxide-reducing genus Methanoplanus and 59 % as members of the acetoclastic genus Methanosaeta. No Haloarchaea were detected, consistent with the need to add these organisms for COD and aromatic removal. Marinobacter and Halomonas dominated the eubacterial community. The presence of these genera is consistent with the ability to stimulate COD and aromatic removal with nutrient addition. In addition, anaerobic members of the phyla Thermotogae, Firmicutes, and unclassified eubacteria were identified and may represent reservoir organisms associated with the conversion hydrocarbons to methane. PMID:24920265

Piubeli, Francine; Grossman, Matthew J; Fantinatti-Garboggini, Fabiana; Durrant, Lucia R

2014-10-01

54

Xenon spallation systematics in Angra DOS Reis  

NASA Astrophysics Data System (ADS)

Literature Xe data for the Angra dos Reis meteorite have been resolved into constituent spallation, fission and trapped components. The spallation Xe compositions vary over a range wider than observed in any other samples, including lunar samples. These variations are due to the mixing of spallation Xe from Ba and rare earth element targets. It is possible to infer the Ba and rare earth spallation Xe compositions. Angra dos Reis spallation Xe compositions are systematically different from those observed in lunar samples, possibly because of differences in the irradiation conditions (geometry and shielding). Thus the Angra dos Reis data appear to be superior to lunar data for predicting spallation Xe compositions in other meteorites.

Hohenberg, C. M.; Hudson, B.; Kennedy, B. M.; Podosek, F. A.

1981-10-01

55

Distribution, population density, and status of sympatric cercopithecids in the Campo-Ma'an area, Southwestern Cameroon.  

PubMed

A study on species composition, distribution, and population density of cercopithecids in the Campo-Ma'an area, Southwestern Cameroon, was undertaken from December 1997 until August 2000. A total of 665.5 km of line transects was used for the census. Thirteen diurnal primate species including five endangered species (Gorilla g. gorilla, Pan troglodytes, Mandrillus sphinx, Colobus satanas, Cercocebus torquatus) were recorded in the Campo Forest, the greatest part of which is a logging concession. Cercopithecus nictitans (1.43 groups/km2), C. cephus (1.13 groups/km2), C. pogonias (0.81 groups/km2), and C. torquatus (0.51 groups/km2) occurred at medium frequencies compared to figures from other Central African study sites. Mandrill densities estimated (0.27 groups/km2) show that the area is very important for the conservation of this rare species. Guenon densities found inside areas with a high level of human activities did not differ significantly from densities estimated in areas with a lower level of human activities. C. torquatus densities were significantly higher in the areas with a low level of human disturbance and encounter rates with Lophocebus albigena also indicate a preference of less disturbed areas. Mangabeys are thus likely to be adversely affected by human activities in the area. In the Ma'an Forest, which has not been logged yet, ten species were confirmed. The population densities of two guenons (C. nictitans and C. cephus) were estimated to be twice as high in the unlogged forest area as compared to the logged forest of Campo. Other species are rarer in the Ma'an Forest than in the Campo Forest. Although mangabeys are adversely affected by human activities, the results still indicate that selective logging may be compatible with the conservation of cercopithecids, if a reduced damage logging concept and antipoaching measures are implemented. Increased hunting activities following logging operations will definitely have a negative longterm impact on primate populations in the Campo-Ma'an area if no further, more effective conservation measures will regulate wildlife use in future. PMID:12145397

Matthews, Adele; Matthews, Andreas

2002-07-01

56

Application of MSS/LANDSAT images to the structural study of recent sedimentary areas: Campos Sedimentary Basin, Rio de Janeiro, Brazil  

NASA Technical Reports Server (NTRS)

Visual and computer aided interpretation of MSS/LANDSAT data identified linear and circular features which represent the ""reflexes'' of the crystalline basement structures in the Cenozoic sediments of the emergent part of the Campos Sedimentary Basin.

Parada, N. D. J. (principal investigator); Barbosa, M. P.

1983-01-01

57

Ground-water in the Teresina-Campo Maior area, Piaui, Brazil  

USGS Publications Warehouse

The Teresina-Campo Maior area lies in a presently developing farming and grazing region near the margin of drought-prone northeast Brazil where irrigated farming offers the best potential for economic development. The area comprises 9,700 square kilometers largely of catinga-covered tabular uplands which are drained by the perennial Rio Parnatba. The climate is hot and humid most of the year but with distinct wet and dry seasons. Temperature extremes range from 20?C to 39?C and the annum rainfall averages 1,200 millimeters. The area's ground-water reservoir is contained chiefly in sandstone aquifers of six westward-dipping sedimentary rock formations, all part of the Maranhao sedimentary basin. The youngest of these formations, namely the Piaut (Pennsylvarian), Poti (Mississippian), Longa (Upper Devonian), and Cabecas (Middle Devoniar), contain the principal aquifers. Precipitation is the primary source of recharge to these aquifers and is more than sufficient to replenish current withdrawals from wells. Underlying the principal aquifers are the untapped Pimenteiras and Serra Grande Formations (both Lower Devonian) which in areas adjacent to the report area are moderately good to excellent water producers. These aquifers are recharged principally by lateral inflow from the east. Water also occurs in the alluvial deposits (Quaternary) underlying the flood plain of the Rio Parnatba but recurrent and uncontrolled flooding at present (1966) precludes their development. Of little economic importance, because they lie above the zone of saturation, are the thin erosional remnants of the Pastos Bons (Upper Triassic), Matuca, and Pedra de Fogo (both Permian) Formations. There are in the report area about 200 drilled wells most of which are pumped with power-driven engines. The wells range from 40 to 500 meters deep but most do not exceed 150 meters, and practically all are completed open hole. Yields range from 500 liters per day for 6-inch-diameter domestic wells to 240,000 liters per hour for 10-inch high-capacity municipal wells. Although there are many more dug wells than drilled wells, dug wells account for less than 1 percent of the current (1966) draft. The current annual withdrawal from the principal aquifers is approximately 5 million cubic meters of which almost half is used for municipal supply and the rest for rural household and irrigation uses. Additional water for public supply is available from aquifers now being pumped, and larger yields probably could be obtained from rural wells designed to take full advantage of the aquifer. Analyses of 28 samples show that the chemical quality of the water is well below the accepted limits of mineral concentration for most uses. Water from the Longa Formation averages 842 milligrams per liter in total dissolved solids and is more mineralized than that in the Piaul and Port Formations which contain water averaging less than 300 milligrams per liter. The water in the Piaui and Poti aquifers is the most suitable in the area for irrigation and has SAR values of C1-S1 and C2-S1. The quantities of water currently being used for irrigation are relatively small (600,000 cubic meters annually) but will increase substantially when intensive irrigation becomes a reality. Divisio de Hydrogeologia da Superintendancia do Desenvolvimento do Nordeste estimates that about 2,500 million cubic meters of water per year would be needed to irrigate about 250,000 hectares in the Teresina-Campo Maior area (about 25 percent of the total area). This goal, however, is not likely to be realized as the water requirement is five times the estimated natural recharge to the aquifers of the area. Most of the water-bearing formations in the report area have barely been tapped and can be developed a great deal more. In fact, the current annual withdrawal from the principal aquifers is less than 0.0025 percent of a conservative estimate of annual replenishment from rainfall. Additionally, only the

Rodis, Harry G.; Suszczynski, Edison F.

1972-01-01

58

Challenges towards the elimination of Human African Trypanosomiasis in the sleeping sickness focus of Campo in southern Cameroon.  

PubMed

The sleeping sickness focus of Campo lies along the Atlantic coast and extends along the Ntem River, which constitutes the Cameroonian and Equatorial Guinean border. It is a hypo-endemic focus with the disease prevalence varying from 0.3 to 0.86% during the last few decades. Investigations on animal reservoirs revealed a prevalence of Trypanosoma brucei gambiense of 0.6% in wild animals and 4.83% in domestic animals of this focus. From 2001 to 2012, about 19 931 tsetse were collected in this focus and five tsetse species including Glossina palpalis palpalis, G. pallicera, G. nigrofusca, G. tabaniformis and G. caliginea were identified. The analysis of blood meals of these flies showed that they feed on human, pig, goat, sheep, and wild animals such as antelope, duiker, wild pig, turtle and snake. The percentage of blood meals taken on these hosts varies according to sampling periods. For instance, 6.8% of blood meals from pig were reported in 2004 and 22% in 2008. This variation is subjected to considerable evolutions because the Campo HAT focus is submitted to socio-economic mutations including the reopening of a new wood company, the construction of autonomous port at "Kribi" as well as the dam at "Memve ele". These activities will bring more that 3000 inhabitants around Campo and induce the deforestation for the implementation of farmlands as well as breeding of domestic animals. Such mutations have impacts on the transmission and the epidemiology of sleeping sickness due to the modification of the fauna composition, the nutritional behavior of tsetse, the zoophilic/anthropophilic index. To achieve the elimination goal in the sleeping sickness focus of Campo, we report in this paper the current epidemiological situation of the disease, the research findings of the last decades notably on the population genetics of trypanosomes, the modifications of nutritional behavior of tsetse, the prevalence of T. b. gambiense in humans, domestic and wild animals. An overview on the types of mutations occurring in the region has been raised and a discussion on the strategies that can be implemented to achieve the elimination of the disease has been made. PMID:25129168

Simo, Gustave; Mbida Mbida, Jean Arthur; Ebo'o Eyenga, Vincent; Asonganyi, Tazoacha; Njiokou, Flobert; Grébaut, Pascal

2014-01-01

59

Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin off Brazil  

PubMed Central

Abstract As a secondary result of oil prospecting in Brazil, samples from the Campos Basin continental slope became available. In these samples, specimens of the genera Microgloma Sanders & Allen, 1973 and Pristigloma Dall, 1900 were found. This contribution provides the southernmost record of the genus Microgloma, the first record of Microgloma mirmidina (Dautzenberg & Fischer 1897) from the western Atlantic, the descriptions of Microgloma macaron sp. n. and Microgloma nhanduti sp. n.as new species, and the shallowest record of Pristigloma alba Sanders & Allen 1973. PMID:22287903

Benaim, Natalia Pereira; Absalão, Ricardo Silva

2011-01-01

60

NOVAS REGRAS CONSTRUO REABILITAO URBANAAMEAASEGURANA DOS MORADORES  

E-print Network

NOVAS REGRAS Lei ignora risco sísmico PÁG.I6 #12;CONSTRU��O ¦ REABILITA��O URBANAAMEA�ASEGURAN�A DOS MORADORES Nova lei esquece regras antissismo ¦Arquitetos e engenheiros acusam Ministério do 30 anos recuperados sob as novas regras. Quem o diz são as ordens de ar- quitetos e engenheiros, que

Instituto de Sistemas e Robotica

61

From obc seismic to porosity volume: A pre-stack analysis of a turbidite reservoir, deepwater Campos Basin, Brazil  

NASA Astrophysics Data System (ADS)

The Campos Basin is the best known and most productive of the Brazilian coastal basins. Turbidites are, by far, the main oil-bearing reservoirs. Using a four component (4-C) ocean-bottom-cable (OBC) seismic survey I set out to improve the reservoir characterization in a deep-water turbidite field in the Campos Basin. In order to achieve my goal, pre-stack angle gathers were derived and PP and PS inversion were performed. The inversion was used as an input to predict the petrophysical properties of the reservoir. Converting seismic reflection amplitudes into impedance profiles not only maximizes vertical resolution but also minimizes tuning effects. Mapping the porosity is extremely important in the development of a hydrocarbon reservoirs. Combining seismic attributes derived from the P-P data and porosity logs I use linear multi-regression and neural network geostatistical tools to predict porosity between the seismic attributes and porosity logs at the well locations. After predicting porosity in well locations, those relationships were applied to the seismic attributes to generate a 3-D porosity volume. The predicted porosity volume highlighted the best reservoir facies in the reservoir. The integration of elastic impedance, shear impedance and porosity improved the reservoir characterization.

Martins, Luiz M. R.

62

Natural radiation exposure in the Campo Arañuelo region in the surroundings of Almaraz nuclear power station (Spain).  

PubMed

During 1998 regional surveys were conducted to evaluate natural radiation exposure of people in the vicinity of the six Spanish nuclear power stations. Indoor radon, external gamma dose rates outdoors and indoors and radioactivity in soil were measured in these surveys. The highest mean annual effective dose to the population was found in the surroundings of the Almaraz nuclear power plant in the province of Cáceres and was mainly due to the presence of high radon concentrations in homes. In order to make a more accurate assessment of the dose coming from the radon in this area, a new and more extensive surgery on indoor radon with a total of 380 measurements was carried out in 2000 in the Campo Arañuelo region around the Almaraz nuclear power station. From the results obtained in this survey, a population-weighted mean annual effective dose from radon exposure of 1.7 mSv y(-1), 44% lower than that previously reported in 1998, was estimated for the whole Campo Arañuelo region. The maximum dose value due to radon exposure, about 4 mSv y(-1), was reached in the so-called La Vera area located in the north of this region. The relationship between the indoor radon concentrates experimentally measured, the geological characteristics of this geographic area and the information provided by the radiation map of the Spanish MARNA Project is also analyzed, confirming that La Vera area should be considered as a high radon level area. PMID:15607520

Poncela, L S Quindós; Navarro, P L Fernández; Fernández, C Sainz; Matarranz, J L Martin; García, J Arteche

2005-01-01

63

Representações do onírico na modernidade : ressonâncias dos discursos de Freud e Jung sobre os sonhos.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Instituto de Psicologia, 2007. Esta dissertação consiste em um esforço interdisciplinar que tem na psicologia seu campo privilegiado de investigação. Nela,… (more)

Brito, Marcelo Gustavo Costa de

2007-01-01

64

Productive reorganization, outsourcing, and work relations in the offshore oil industry in the Campos Basin, Rio de Janeiro.  

PubMed

This article analyzes the relationship between the intensive use of outsourcing and labor organizations on offshore oil platforms in the Campos Basin, Rio de Janeiro, Brazil. The theoretical and methodological framework applied in our research is based on Ergonomics of Activity and the Psychodynamics of Work, from an ergological perspective. In addition to the more general trend of increasing precariousness, we highlight the potential loss of formal and informal knowledge resulting from the fragmentation of work collectives, as we consider the cohesion of these collectives to be a crucial element contributing to reliability in process operations. Increasing precariousness of work contributes to this fragmentation and one of its main causes is the uncontrolled increase in outsourcing of work. This situation has had nefarious consequences for workers' health and safety, suggesting that those who have adopted outsourcing as a labor management tool have failed to consider these harmful consequences as rigorously as necessary. PMID:19193534

Figueiredo, Marcelo; Alvarez, Denise; Athayde, Milton; Suarez, José Diego; Pereira, Renata; Soares, Leonardo

2008-01-01

65

Spotted fever group Rickettsia in Amblyomma dubitatum tick from the urban area of Campo Grande, Mato Grosso do Sul, Brazil.  

PubMed

Rickettsia infection of each tick was evaluated by the hemolymph test and polymerase chain reaction (PCR) targeting gltA and ompA genes. All hemolymph tests were negative and PCR of one A. dubitatum detected both Rickettsia genes. Sequence of ompA exhibited a 99% identity with Rickettsia parkeri and R. africae and a 98% identity with R. sibirica. Rickettsia of the spotted fever group in A. dubitatum is described for the first time in an urban area within the municipality of Campo Grande in the state of Mato Grosso do Sul (MS), Brazil. This finding reinforces the importance of more detailed studies to determine the role of A. dubitatum in the transmission of spotted fever agents. PMID:25454606

Matias, Jaqueline; Garcia, Marcos Valério; Cunha, Rodrigo Casquero; Aguirre, André de Abreu Rangel; Barros, Jacqueline Cavalvante; Csordas, Bárbara Guimarães; Andreotti, Renato

2015-03-01

66

Continuous Mantle Exhumation at the Outer Continental Margin of the Santos, Campos and Espírito Santo Basins, Brazil  

NASA Astrophysics Data System (ADS)

The interpretation of 12,000 km of very deep (PSTM to 16 sec., PSDM to 25 km) 2D seismic sections, coupled with gravimetric and magnetometric modeling line-by-line, and the integration of the results with the regional data bank of Petrobras, all together viewed in terms of the recent tectonic models developed for the rupturing and separation of mega-plates, led to a regional (500,000 km2), first-time ever, 3D-view of the deep structure underlying the prolific sedimentary basins of Santos, Campos and Espírito Santo in southeastern Brazil. The three basins are situated onto a continental margin that narrows gradually, from south to north, from a very wide (Santos), through an intermediate (Campos), and then to a narrow (Espírito Santo) passive margin. The seismic sections shows very well the dual rheological behavior of the continental crust, consisting of a deeper and plastic lower crust (with numerous short and strong reflections that display sub-horizontal ductile flow) and a shallower and brittle upper crust (represented by a mostly transparent and faulted seismic facies topped by the sedimentary sections of the rift and thermal subsidence phases). The crustal structure of the Santos Basin shows a zonation from west to east of alternating bands of NE-SW-trending thin (plastic basement terrains) and thick (resistant basement terrains) stretched continental crust. In vertical section this zonation is displayed as a series of necking zones, leading to a highly irregular, low to moderate crustal taper. Such zonation is less developed in the Campos Basin, where the crustal taper is moderate and regular, and practically non-existent in the Espírito Santo Basin, where the crustal taper is high. The most outstanding crustal feature shared in common by the three basins is the exhumation of mantle between the tip of the hyper-extended continental crust and the tabular-shaped oceanic crust. Although the crustal taper varies significantly from basin to basin their continental crust pinches out invariably on the flanks of exhumed mantle. This gives rise to a remarkable long (900 km along a N-S direction and 600 km in E-W direction), relatively narrow (15 to 70 km wide) and continuous belt of exhumed mantle that marks the passage from continental crust to oceanic crust in all three basins. The Santos, Campos and Espírito Santo Basins thus form a typical magma-poor passive margin. These are in sharp contrast with the adjacent basin to the south, the Pelotas Basin, that in turn is a typical volcanic passive margin displaying a long (1000 km in a N-S direction) and wide (100 to 220 km) belt of seaward-dipping reflectors at its outer margin and no exhumation of the mantle at the continent-ocean boundary.

Zalan, P. V.; Severino, M. G.; Rigoti, C. A.; Magnavita, L. P.; Oliveira, J. B.; Viana, A. R.

2011-12-01

67

Chronology of Neogene sedimentation, stratigraphy, and tectonism in the Campo de Talampaya region, La Rioja Province, Argentina  

NASA Astrophysics Data System (ADS)

Chronostratigraphic, paleoenvironmental, and tectonic analysis of a 2320 m thick Neogene continental section was conducted along the southern limit of the Campo de Talampaya. Magnetic polarity stratigraphy and fission track ages were used to develop a relatively precise geochronology. The strata record a period of mixed evaporitic and terrigenous elastic sedimentation (˜20-6.1 Ma) that persisted in the distal Bermejo Basin during eastward migration of the Precordillera fold-thrust belt. A critical transition of depositional environments and a change from western to eastern source areas occurred between 12.9 and 12.3 Ma. The saline mud-flat environment of the Río Mañero Formation, derived from a western source and characterized by fine-grained sandstones, mudstones, and evaporites, yielded to a short period of playa lake deposition. This was soon overwhelmed by deposition of the Desencuentro Formation, composed of sandstones and mudstones with an eastern source area and deposited in a sand-flat/mud-flat environment. We propose that this stratigraphic transition resulted from initiation of uplift of the Sierra de Velasco, a range of the Sierras Pampeanas, located ˜65 km to the east-northeast of the section. Basement clasts, probably derived from the Sierra de Velasco, are found in conglomeratic lenses beginning in the lower part of the Desencuentro Formation. The modern Campo de Talampaya basin formed after deposition of the top of the Alto de San Nicolás paleomagnetic section (6.1 Ma) when west-verging reverse faults uplifted the Sierra Morada and Sierra de los Tarjados. All strata in the section were tilted eastward during these culminating uplift events.

Malizia, Daniel C.; Reynolds, James H.; Tabbutt, Kenneth D.

1995-05-01

68

[Public health policies for workers: analysis of the implementation of institutionalization measures in a Brazilian city].  

PubMed

The creation of the Brazilian Network of Comprehensive Occupational Health Care (Renast) in 2002 led to the appearance and increase of Reference Centers for Occupational Health (Cerest) in Brazil. In the North Fluminense Region, Cerest was inaugurated in 2006 and resulted from the transformation of the former Occupational Health Program of the city of Campos dos Goytacazes. In the broader context of the history of Occupational Health Programs in Brazil and the creation of Renast, this research analyzes the setting up of this Cerest in Campos in the State of Rio de Janeiro. In line with Foucault, it examines the specificity of its relations of provenance and emergence, conducting a review of the trajectory of the Occupational Health Program in the city in question. Documentary analysis, participant observation and interviews with Cerest team members were used as research tools. The survey revealed some political and social trouble spots. The results show that Cerest has a history of isolation and marginalization in the region's political and institutional structure. It acts continuously with a predominant logic of care since its inception, but it has faced serious political obstacles over the course of time in the implementation of actions to promote occupational health. PMID:23546204

Leão, Luís Henrique da Costa; Castro, Alexandre de Carvalho

2013-03-01

69

MESTRADO EM MICROBIOLOGIA MICROBIOLOGIA DOS ALIMENTOS Faculdade de Medicina Veterinria  

E-print Network

MESTRADO EM MICROBIOLOGIA MICROBIOLOGIA DOS ALIMENTOS ­ Faculdade de Medicina Veterinária Objectivos: Esta UC visa ministrar formação geral e específica no domínio da Microbiologia dos Alimentos e que interfiram com a segurança sanitária dos alimentos ou promovam a respectiva fermentação, cura ou

Instituto de Sistemas e Robotica

70

MAC5770 INTRODUO TEORIA DOS GRAFOS INFORMAES GERAIS  

E-print Network

MAC5770 INTRODU��O � TEORIA DOS GRAFOS INFORMA��ES GERAIS Bem-vindos à edição do 1o. semestre de 2008 de MAC5770, Introdução à Teoria dos Grafos. Esta é uma disciplina do Programa de Pós-graduação em contém muito mais material do que pode ser coberto em um curso introdutório de teoria dos grafos

Kohayakawa, Yoshiharu

71

An active security protocol against DoS attacks  

Microsoft Academic Search

Denial of service (DoS) attacks represent, in today's Internet, one of the most complex issues to address. A session is under a DoS attack if it cannot achieve its intended throughput due to the misbehavior of other sessions. Many research studies dealt with DoS, proposing models and\\/or architectures mostly based on an attack prevention approach. Prevention techniques lead to different

Domenico Cotroneo; L. Peluso; Simon Pietro Romano; Giorgio Ventre

2002-01-01

72

Fast interrupt platform for extended DOS  

NASA Technical Reports Server (NTRS)

Extended DOS offers the unique combination of a simple operating system which allows direct access to the interrupt tables, 32 bit protected mode access to 4096 MByte address space, and the use of industry standard C compilers. The drawback is that fast interrupt handling requires both 32 bit and 16 bit versions of each real-time process interrupt handler to avoid mode switches on the interrupts. A set of tools has been developed which automates the process of transforming the output of a standard 32 bit C compiler to 16 bit interrupt code which directly handles the real mode interrupts. The entire process compiles one set of source code via a make file, which boosts productivity by making the management of the compile-link cycle very simple. The software components are in the form of classes written mostly in C. A foreground process written as a conventional application which can use the standard C libraries can communicate with the background real-time classes via a message passing mechanism. The platform thus enables the integration of high performance real-time processing into a conventional application framework.

Duryea, T. W.

1995-01-01

73

Use and valuation of native and introduced medicinal plant species in Campo Hermoso and Zetaquira, Boyacá, Colombia  

PubMed Central

Background Medicinal plant species contribute significantly to folk medicine in Colombia. However, few local studies have investigated whether species used are introduced or native and whether there is a difference in importance of native and introduced medicinal plant species. The aim of the present study was to describe the use of medicinal plants within two municipalities, Campo Hermoso and Zetaquira, both in the department of Boyacá, Colombia and to assess the importance of native and introduced plants to healers, amateur healers and local people. As local healers including amateur healers have no history of introduced species our working hypotheses (H1-2) were that H1: native and introduced medicinal plant species are of equal importance and H2: healers and amateur healers do not differentiate in their preferences between native and introduced medicinal plant species. Methods Ten villages were included in the study. A combination of quantitative and qualitative methods was used including questionnaires, semi-structured interviews, in- depth interviews, and open talks. Voucher specimens were collected in home gardens and during field walks. For data analysis, we calculated use value indices and Jaccard index and tested for the above hypothesis using Spearman rank-correlation coefficients and Wilcoxon-Mann–Whitney tests. Results Eighty medicinal plant species were described by locals as the most frequently used. Of these, 78 species were taxonomically identified, distributed within 41 families and 74 genera, which included 35 native species and 43 introduced. The highest valued families were: Asteraceae, Lamiaceae, Apiaceae, Rutaceae and Verbenaceae. The species ranked highest according to their Use Values, in both municipalities, were Mentha suaveolens Ehrh., Ambrosia cumanensis Kunth, and Verbena littoralis Kunth. Introduced species were more important than native ones in Zetaquira, while there was no difference in importance in Campo Hermoso. While healers relied most on the uses of native species, amateur healers were inclined to rely on introduced species. Medicinal plant administration in both municipalities follow the usual pattern: Leaves are used most commonly prepared by decoction or infusion and administrated orally. Conclusions The high proportion of introduced plant species used in the local traditional medicines is similar to the results of a number of other ethnobotanical studies and emphasise the need for efforts to record and maintain traditional knowledge on native species. PMID:23578098

2013-01-01

74

Hot spot volcanic tracks and their implications for south American plate motion, Campos basin (Rio de Janeiro state), Brazil  

NASA Astrophysics Data System (ADS)

The spatial and temporal arrangement of volcanism produced by hot spots potentially can reveal the history of lithosphere plate drift. From the age of these igneous bodies, it is possible to estimate not only the drift speed of plates but also the timing of eventual route changes. This article concentrates on the apparent link between both the Poços de Caldas-Cabo Frio alkaline rocks alignment (Rio de Janeiro state) and the Vitória-Trindade chain (situated on the oceanic crust adjacent to Espírito Santo state, Brazil) to a single fixed hot spot. On the basis of geological, geomorphological, and geochronological evidence, the authors propose that the South American continent may have experienced a clockwise rotation during the Eocene, which resulted in the relative displacement of hot spot volcanic manifestations from Cabo Frio (Rio de Janeiro state) to the western border of the Vitória-Trindade chain. At this time, several tectonic, sedimentary, and magmatic events took place that were capable of causing the inferred Eocene displacement. It is worth noting the coincidence between the northeastern trend of the oil fields of the Campos basin and the suggested path of the basin as it moved over the hot spot.

Filho, Antonio Thomaz; Cesero, Pedro de; Mizusaki, Ana Maria; Leão, Joana Gisbert

2005-03-01

75

Ajuste de parámetros libres en teorías de campos camaleones a partir de espectros de nubes moleculares galácticas y experimentos terrestres  

NASA Astrophysics Data System (ADS)

Resultados recientes, basados en el análisis de espectros moleculares de nubes galácticas a través del método del amoníaco, han arrojado nuevos límites sobre la variación del parámetro adimensional ?=m_e /m_p. Los resultados indican ? ?/? = (?_{obs}-?_{lab})/?_{lab}= (2.2± 0.4_{est} ±0.3_{sist}) times 10 ^{-8}, en acuerdo con una variación no nula de dicha cantidad (Levshakov et al. 2010). En este trabajo, motivado por los datos astronómicos, estudiamos la solución lineal del modelo teórico fenomenológico de campo escalar camaleón, presentado por Mota y Shaw (2007), que predice variaciones en ?. Con el fin de cotejar estas predicciones con los resultados observacionales, utilizamos datos de experimentos terrestres que testean violaciones al Principio de Equivalencia para analizar el valor de los parámetros libres presentes en el modelo. El trabajo realizado muestra que la solución estudiada no se puede ajustar a los datos experimentales, sugiriendo que el modelo lineal debe ser descartado para explicar las observaciones astronómicas. FULL TEXT IN SPANISH

Teppa Pannia, F. A.; Landau, S. J.

76

The Heme-Based Oxygen-Sensor Phosphodiesterase Ec DOS (DosP): Structure-Function Relationships  

PubMed Central

Escherichia coli Direct Oxygen Sensor (Ec DOS, also known as Ec DosP) is a heme-based O2-sensing phosphodiesterase from Escherichia coli that catalyzes the conversion of cyclic-di-GMP to linear di-GMP. Cyclic-di-GMP is an important second messenger in bacteria, highlighting the importance of understanding structure-function relationships of Ec DOS. Ec DOS is composed of an N-terminal heme-bound O2-sensing PAS domain and a C-terminal phosphodiesterase catalytic domain. Notably, its activity is markedly enhanced by O2 binding to the heme Fe(II) complex in the PAS sensor domain. X-ray crystal structures and spectroscopic and catalytic characterization of the wild-type and mutant proteins have provided important structural and functional clues to understanding the molecular mechanism of intramolecular catalytic regulation by O2 binding. This review summarizes the intriguing findings that have obtained for Ec DOS. PMID:25586128

Shimizu, Toru

2013-01-01

77

Resist DoS attacks in UMTS-WLAN  

NASA Astrophysics Data System (ADS)

Wireless network is more vulnerable to denial of service (DoS) attacks than wired one. In this paper we propose two methods to resist DoS attacks in UMTS-WLAN network, one is active and the other is passive. These two are complementary to each other. In active DoS defense method, a mobile terminal generates an authorized anonymous ID (AAI) using its true ID such as IP address, MAC address, PIN code, or asymmetric key, and substitutes its true ID with the authorized anonymous ID. The mobile terminal may be authenticated by the UMTS-WLAN, however its true ID is anonymous to intending attackers. This method can be used to isolate de-authenticating/disassociating DoS attackers, spoofing power-save DoS attacker, etc. In passive DoS defense method, we propose a trace back scheme. We use covert channels in the header of mobile IP packets to trace back the malicious nodes by embedding some address information of intermediate nodes, and recovering the embedded information by the victim. After the victim successfully traces the attacking paths from malicious nodes, it can segregate the malicious nodes and protect itself. This method can be used to resist DoS attacks of mass-produced junk message congestions.

Qu, Huyu; Cheng, Qiang

2005-06-01

78

Natural incidence of egg parasitoids of Edessa meditabunda (F.) (Hemiptera: Pentatomidae) on Crotalaria spectabilis in Campo Novo do Parecis, MT, Brazil.  

PubMed

Egg parasitoids of the stink bug Edessa meditabunda (F) were studied on rattlepod Crotalaria spectabilis used in soybean crop rotation in Campo Novo do Parecis, Mato Grosso state, central western Brazil. Seven species of parasitoids were found: two Encyrtidae, one Eurytomidae, and four Platygastridae. The occurrence of Trissolcus euchisti (Ashmead) and Trissolcus elimatus Johnson (Platygastridae) on eggs of E. meditabunda is recorded for the first time. Moreover, this is the first record of T. elimatus and T. euchisti from Brazil. PMID:22068950

Golin, Vanessa; Loiácono, M S; Margaría, C B; Aquino, D A

2011-10-01

79

[Occurrence of intestinal parasites and commensal organisms among schoolchildren living in a 'landless farm workers' settlement in Campo Florido, Minas Gerais, State Brazil].  

PubMed

The aim of this study was to verify the occurrence of intestinal parasites and commensal organisms among children attending a school located in a settlement of 'landless farm workers' in Campo Florido, Minas Gerais, Brazil. Coproparasitological analyses performed on 72 school children revealed 59.7% positivity and 4 types of protozoa and 5 types of helminths were identified. It can be concluded that it is necessary to monitor the health conditions of this population. PMID:12715070

Ferreira, Patricia; Lima, Marcelo Ribeiro; Oliveira, Francielle Batista; Pereira, Maria Letícia Moreira; Ramos, Leila Bitar Moukachar; Marçal, Maria das Graças; Costa-Cruz, Julia Maria

2003-01-01

80

Volcanism-sedimentation interaction in the Campo de Calatrava Volcanic Field (Spain): a magnetostratigraphic and geochronological study  

NASA Astrophysics Data System (ADS)

This work focuses on the influence of Cenozoic volcanism of the Campo de Calatrava volcanic field on the sedimentation of two small continental basins in Spain (Argamasilla and Calzada-Moral basins). The volcanism in this area was mainly monogenetic, according to the small-volume volcanic edifices of scoria cones that were generated and the occurrence of tuff rings and maars. A sedimentological analysis of the volcaniclastic deposits led to the identification of facies close to the vents, low-density (dilute) pyroclastic surges, secondary volcanic deposits and typical maar deposits. Whole-rock K/Ar dating, together with palaeomagnetic constraints, yielded an age of 3.11-3.22 Ma for the onset of maar formation, the deposition finished in the Late Gauss-Early Matuyana. Using both techniques and previous paleontological data allowed it to be inferred that the maar formation and the re-sedimentation stage that occurred in Argamasilla and Calzada-Moral basins were roughly coeval. The occurrence of syn-eruption volcaniclastic deposits with small thicknesses that were separated by longer inter-eruption periods, where fluvial and lacustrine sedimentation was prevalent, together with the presence of small-volume volcanic edifices indicated that there were short periods of volcanic activity in this area. The volcanic activity was strongly controlled by previous basement faults that favoured magma feeding, and the faults also controlled the location of volcanoes themselves. The occurrence of the volcanoes in the continental basins led to the creation of shallow lakes that were related to the maar formation and the modification of sedimentological intra-basinal features, specifically, valley slope and sediment load.

Herrero-Hernández, Antonio; López-Moro, Francisco Javier; Gallardo-Millán, José Luis; Martín-Serrano, Ángel; Gómez-Fernández, Fernando

2015-01-01

81

Volcanism-sedimentation interaction in the Campo de Calatrava Volcanic Field (Spain): a magnetostratigraphic and geochronological study  

NASA Astrophysics Data System (ADS)

This work focuses on the influence of Cenozoic volcanism of the Campo de Calatrava volcanic field on the sedimentation of two small continental basins in Spain (Argamasilla and Calzada-Moral basins). The volcanism in this area was mainly monogenetic, according to the small-volume volcanic edifices of scoria cones that were generated and the occurrence of tuff rings and maars. A sedimentological analysis of the volcaniclastic deposits led to the identification of facies close to the vents, low-density (dilute) pyroclastic surges, secondary volcanic deposits and typical maar deposits. Whole-rock K/Ar dating, together with palaeomagnetic constraints, yielded an age of 3.11-3.22 Ma for the onset of maar formation, the deposition finished in the Late Gauss-Early Matuyana. Using both techniques and previous paleontological data allowed it to be inferred that the maar formation and the re-sedimentation stage that occurred in Argamasilla and Calzada-Moral basins were roughly coeval. The occurrence of syn-eruption volcaniclastic deposits with small thicknesses that were separated by longer inter-eruption periods, where fluvial and lacustrine sedimentation was prevalent, together with the presence of small-volume volcanic edifices indicated that there were short periods of volcanic activity in this area. The volcanic activity was strongly controlled by previous basement faults that favoured magma feeding, and the faults also controlled the location of volcanoes themselves. The occurrence of the volcanoes in the continental basins led to the creation of shallow lakes that were related to the maar formation and the modification of sedimentological intra-basinal features, specifically, valley slope and sediment load.

Herrero-Hernández, Antonio; López-Moro, Francisco Javier; Gallardo-Millán, José Luis; Martín-Serrano, Ángel; Gómez-Fernández, Fernando

2014-07-01

82

Ocorrência de parasitas e comensais intestinais em crianças de escola localizada em assentamento de sem-terras em Campo Florido, Minas Gerais, Brasil Occurrence of intestinal parasites and commensal organisms among schoolchildren living in a 'landless farm workers' settlement in Campo Florido, Minas Gerais, State Brazil  

Microsoft Academic Search

2 Abstract The aim of this study was to verify the occurrence of intestinal parasites and commensal organisms among children attending a school located in a settlement of 'landless farm workers' in Campo Florido, Minas Gerais, Brazil. Coproparasitological analyses performed on 72 school children revealed 59.7% positivity and 4 types of protozoa and 5 types of helminths were identified. It

Patricia Ferreira; Marcelo Ribeiro Lima; Maria Letícia Moreira Pereira; Leila Bitar; Graças Marçal; Julia Maria Costa-Cruz

83

CAMPO Mobility 2030 Plan  

E-print Network

lines; ? 1,014 additional lane miles of freeways, parkways, or toll ways, including completion of SH 45 (N), SH 45 (S), SH 130, and US 183 A and upgrades or improvements to IH-35, US 183 (N), US 183 (S), US 290 (E), US 290 (W), SH 71 (E), SH 71 (W...

Capital Area Metropolitan Planning Organization

2005-06-06

84

OptaDOS - a new tool for EELS calculations  

NASA Astrophysics Data System (ADS)

Many modern (Scanning) Transmission Electron Microscopes ((S)TEMs) are equipped with an energy loss spectrometer. The Electron Energy Loss (EEL) spectra collected provide an experimental method of probing the bonding within a material. With the extra addition of monochromators, the energy resolution obtainable means that even more information is revealed within the fine structure of the spectra. Interpreting the fine structure can often be aided by simulation. Density-functional theory (DFT) is one method of simulating EEL spectra. DFT allows us to simulate DOS and EEL spectra from different structures. This comparison between simulation and experiment enables us to explore how changes in the spectrum are related to changes within the sample. CASTEP is a pseudopotential DFT code which can simulate both low-loss and core-loss EEL spectra. Recent developments have resulted in a separate analysis tool, OptaDOS. This package computes various spectral properties including DOS, projected DOS, joint DOS, core-loss and low-loss EEL spectra and optical spectra. One of the important aspects of the code is the way in which the DOS is calculated. This is done via linear extrapolation or adaptive smearing, methods which are not currently available within CASTEP (or indeed any other code) and which allow detailed analysis of spectral properties. This paper summarises these developments and what they mean for the interpretation of EEL spectra.

Nicholls, R. J.; Morris, A. J.; Pickard, C. J.; Yates, J. R.

2012-07-01

85

Timing accuracy of PC programs running under DOS and Windows.  

PubMed

The time in which to press a key and the video retrace interval were measured under various conditions of MS-DOS, Windows 3.1, Windows 3.11, Windows 95, and Windows NT 4.0 Workstation. All the measurements were obtained with the same program running on a single Pentium 300 computer. In all, samples of 1,000 timing measurements were obtained in each of 96 different conditions. Standard deviations of the times ranged from about 0.0006 msec under DOS 6.22 to almost 40 msec under Windows 3.11, representing an increase in timing error of up to 6,000,000%. Researchers requiring millisecond timing accuracy are recommended to use DOS only. PMID:10495817

Myors, B

1999-05-01

86

[Nobody gives orders here: the meanings of work and health for settlers from the Landless Rural Workers' Movement].  

PubMed

This paper discusses the partial results of qualitative research on lifestyles and meanings attributed to health and work among settlers from the Landless Rural Workers' Movement (MST) and identifies strategies developed by workers to maintain and/or promote health. The study was conducted in a rural settlement affiliated with the MST in Campos dos Goytacazes, Rio de Janeiro State, Brazil. The ergological approach was the main theoretical and methodological reference for understanding work from the perspective of "human activity". The study techniques included document analysis, participant observation, semi-structured interviews, and focus groups, and the data were submitted to thematic content analysis. The landless rural workers attributed the meanings of freedom and satisfaction to their work, associated with self-management and autonomy, which they reported as key elements for health. Although rural work was considered tiring, the work and way of life in the settlement provided this community with possibilities for ensuring their health and resisting the hegemonic agribusiness model. PMID:24005925

Santos, Júlio César Borges dos; Hennington, Elida Azevedo

2013-08-01

87

TEORIA DO DISCURSO, NEOPRAGMATISMO E LEGITIMAÇÃO DOS DIREITOS HUMANOS  

Microsoft Academic Search

RESUMO A temática da legitimação dos direitos humanos e da Constituição passou a conviver, em tempos de pós-positivismo, com o plano das preocupações sobre a efetividade das instituições jurídicas, políticas e sociais. Na atualidade, porém, o discurso de legitimação - sobretudo a sua matriz kantiana e discursiva - encontra-se posto à prova pelas críticas erguidas pelo neopragmatismo, especialmente por Richard

Alexandre Garrido da Silva

88

MODELAGEM MATEMÁTICA DOS NÍVEIS D'ÁGUA NO RIO ARAGUAIA  

Microsoft Academic Search

Resumo - Este trabalho é pioneiro para a região Centro-Oeste do Brasil e visa ao aprofundamento da problemática do aproveitamento do Rio Araguaia como via navegável para transportar as safras de grãos das regiões Centro-Norte. O Programa de Desenvolvimento da Hidrovia Tocantins- Araguaia é uma iniciativa do Ministério dos Transportes para estabelecer a navegação fluvial confiável e segura em 2.242

Rone Antônio de Azevedo

89

The effect of an oil drilling operation on the trace metal concentrations in offshore bottom sediments of the Campos Basin oil field, SE Brazil.  

PubMed

The concentrations of Al, Fe, Mn, Zn, Cu, Pb, Ni, Cr, Ba, V, Sn and As in offshore bottom sediments from the Bacia de Campos oil field, SE Brazil, were measured at the beginning and at 7 months after completion of the drilling operation. Concentrations of Al, Fe, Ba, Cr, Ni and Zn were significantly higher closer to the drilling site compared to stations far from the site. Average concentrations of Al, Cu, and in particular of Ni, were significantly higher at the end of the drilling operation than at the beginning. Comparison between drilling area sediments with control sediments of the continental platform, however, showed no significant difference in trace metal concentrations. Under the operation conditions of this drilling event, the results show that while changes in some trace metal concentrations do occur during drilling operations, they are not significantly large to be distinguished from natural variability of the local background concentrations. PMID:12222892

Rezende, C E; Lacerda, L D; Ovalle, A R C; Souza, C M M; Gobo, A A R; Santos, D O

2002-07-01

90

Levelling profiles and a GPS network to monitor the active folding and faulting deformation in the Campo de Dalias (Betic Cordillera, southeastern Spain).  

PubMed

The Campo de Dalias is an area with relevant seismicity associated to the active tectonic deformations of the southern boundary of the Betic Cordillera. A non-permanent GPS network was installed to monitor, for the first time, the fault- and fold-related activity. In addition, two high precision levelling profiles were measured twice over a one-year period across the Balanegra Fault, one of the most active faults recognized in the area. The absence of significant movement of the main fault surface suggests seismogenic behaviour. The possible recurrence interval may be between 100 and 300 y. The repetitive GPS and high precision levelling monitoring of the fault surface during a long time period may help us to determine future fault behaviour with regard to the existence (or not) of a creep component, the accumulation of elastic deformation before faulting, and implications of the fold-fault relationship. PMID:22319309

Marín-Lechado, Carlos; Galindo-Zaldívar, Jesús; Gil, Antonio José; Borque, María Jesús; de Lacy, María Clara; Pedrera, Antonio; López-Garrido, Angel Carlos; Alfaro, Pedro; García-Tortosa, Francisco; Ramos, Maria Isabel; Rodríguez-Caderot, Gracia; Rodríguez-Fernández, José; Ruiz-Constán, Ana; de Galdeano-Equiza, Carlos Sanz

2010-01-01

91

Major controlling factors on hydrocarbon generation and leakage in South Atlantic conjugate margins: A comparative study of Colorado, Orange, Campos and Lower Congo basins  

NASA Astrophysics Data System (ADS)

We present a supra-regional comparative study of the major internal and external factors controlling source rock (SR) maturation and hydrocarbon (HC) generation and leakage in two pairs of conjugate margins across the South Atlantic: the Brazil (Campos Basin)-Angola (Lower Congo Basin) margins located in the "central segment", and the Argentina (Colorado Basin)-South Africa (Orange Basin) in the "southern segment". Our approach is based on the analysis and integration of borehole data, 1D numerical modeling, 2D seismic reflection data, and published reports. Coupling of modeling results, sedimentation rate calculation and seal-bypass system analysis reveal that: (1) oil window is reached by syn-rift SRs in the southern segment during the Early to Late Cretaceous when thermal subsidence is still active, while in the central segment they reach it in Late-Cretaceous-Neogene during a salt remobilization phase, and (2) early HC generation from post-rift SRs in the southern segment and from all SRs in the central segment appears to be controlled mainly by episodes of increased sedimentation rates. The latter seems to be associated with the Andes uplift history for the western South Atlantic basins (Campos and Colorado) and to a possibly climate-driven response for the eastern South Atlantic basins (Orange and Lower Congo). Additionally, we observe that the effect of volcanism on SR maturation in the southern segment is very local. The comparison of Cretaceous mass transport deposit (MTD) episodes with HC peak of generation and paleo-leakage indicators in the southern segment revealed the possible causal effect that HC generation and leakage have over MTD development. Interestingly, Paleogene leakage indicators, which were identified in the Argentina-South Africa conjugate margins, occur contemporaneously to low sedimentation rate periods. Nonetheless, present-day leakage indicators which were also identified in both pairs of conjugate margins might be related to seal failure events linked to eustatic sea-level drops.

Marcano, Gabriela; Anka, Zahie; di Primio, Rolando

2013-09-01

92

Ultrafast ligand dynamics in the heme-based GAF sensor domains of the histidine kinases DosS and DosT from Mycobacterium tuberculosis†  

PubMed Central

The transcriptional regulator DosR from M. tuberculosis plays a crucial role in the virulence to dormancy transition of the pathogen. DosR can be activated by DosT and DosS, two histidine kinases with heme-containing sensor GAF domains, capable of diatomic ligand binding, To investigate the initial processes occurring upon ligand dissociation, we performed ultrafast time-resolved absorption spectroscopy of the isolated sensor domains ligated with O2, NO and CO. The results reveal a relatively closed heme pocket for both proteins. For DosT the yield of O2 escape from the heme pocket on the picoseconds timescale upon photodissociation was found to be very low (1.5%), similar to other heme-based oxygen sensor proteins, implying that this sensor acts as an effective O2 trap. Remarkably, this yield is an order of magnitude higher in DosS (18%). For CO, by contrast, the fraction of CO rebinding within the heme pocket is higher in DosS. Experiments with mutant DosT sensor domains and molecular dynamics simulations indicate an important role in ligand discrimination of the distal tyrosine, present in both proteins, which forms a hydrogen bond with heme-bound O2. We conclude that despite their similarity, DosT and DosS display ligand-specific different primary dynamics during the initial phases of intra-protein signaling. The distal tyrosine, present in both proteins, plays an important role in these processes. PMID:22142262

Vos, Marten H.; Bouzhir-Sima, Latifa; Lambry, Jean-Christophe; Luo, Hao; Eaton-Rye, Julian J.; Ioanoviciu, Alexandra; Ortiz de Montellano, Paul R.; Liebl, Ursula

2011-01-01

93

Structures of Mycobacterium tuberculosis DosR and DosR?DNA Complex Involved in Gene Activation during Adaptation to Hypoxic Latency  

SciTech Connect

On encountering low oxygen conditions, DosR activates the transcription of 47 genes, promoting long-term survival of Mycobacterium tuberculosis in a non-replicating state. Here, we report the crystal structures of the DosR C-terminal domain and its complex with a consensus DNA sequence of the hypoxia-induced gene promoter. The DosR C-terminal domain contains four {alpha}-helices and forms tetramers consisting of two dimers with non-intersecting dyads. In the DNA-bound structure, each DosR C-terminal domain in a dimer places its DNA-binding helix deep into the major groove, causing two bends in the DNA. DosR makes numerous protein-DNA base contacts using only three amino acid residues per subunit: Lys179, Lys182, and Asn183. The DosR tetramer is unique among response regulators with known structures.

Wisedchaisri, Goragot; Wu, Meiting; Rice, Adrian E.; Roberts, David M.; Sherman, David R.; Hol, Wim G.J. (UWASH)

2010-07-20

94

Ideología y grotesco en dos obras recientes de Adam Guevara  

E-print Network

FALL 1998 69 Ideología y grotesco en dos obras recientes de Adam Guevara Felipe Reyes Palacios Incorporado de lleno a la dramaturgia desde 1988 - a los veinte años exactos de la crisis política que se vivió en México en 1968, cuyo momento... culminante es la matanza de estudiantes en la plaza de Tlatelolco el 2 de octubre de dicho año -, y proveniente de la práctica de la dirección escénica desde sus años de estudiante en la Escuela Nacional de Teatro del INBA (1963-1967), Adam Guevara (México...

Reyes Palacios, Felipe

1998-10-01

95

Detection of DoS attacks using intrusion detection sensors  

NASA Astrophysics Data System (ADS)

Intrusion detection systems have usually been developed using large host-based components. These components impose an extra load on the system where they run (sometimes even requiring a dedicated system) and are subject to tampering or disabling by an intruder. Additionally, intrusion detection systems have usually obtained information about host behavior through indirect means, such as audit trails or network packet traces. This potentially allows intruders to modify the information before the intrusion detection system obtains it and slows down the detection and prevention of DoS attacks, making it possible for an intruder to hide his activities. In this paper we propose work that will attempt to show that it is possible to perform intrusion detection mechanism of DoS attacks using small sensors embedded in a computer system. These sensors will look for signs of specific intrusions. They will perform target monitoring by observing the behavior of the through an audit trail or other indirect means in real time while the Snort IDS running. Furthermore, by being built into the computer system it could provide a flexible alert sensor which may not impose a considerable extra load on the host they monitor.

Ramakrishna, Pathmenanthan; Maarof, Mohd A.

2002-09-01

96

The Permian post-orogenic collapse in the Alps: insights from the Campo unit (Austroalpine nappes, N-Italy, SE-Switzerland)  

NASA Astrophysics Data System (ADS)

The final stage of the Variscan orogeny (310-270 Ma) is characterized by an intense tectonic, magmatic and metamorphic event. During the Permian, acid and mafic intrusions were emplaced at all crustal levels and are associated to high-temperature contact metamorphism. While most of the studies focus either on the formation of Permian basins or on the lower crustal magmatic and metamorphic evolution, the characterization of the middle crust is lacking. Therefore, this study aims to unravel the processes active at mid-crustal levels during the Permian. We investigate the contact aureole of the Sondalo gabbro emplaced in a mid-crustal position during the Permian, exposed in the Austroalpine Campo unit (N-Italy). This work is based on a multidisciplinary approach linking structural geology, metamorphic petrology and geochronology. The country rock of the gabbroic intrusion is composed of Grt-St micaschists and paragneisses indicating a prograde path in the amphibolite facies associated with the formation of a N-W steeply dipping S2 foliation. This foliation is pervasively reworked by a N-E trending sub-vertical S3 fabric made of Ms-Bt metasediments. This S3 fabric is also found in metapelitic septa in the core of the mafic intrusion, whereas in the narrow contact aureole a moderately dipping S4 fabric roughly parallel to the margins of the pluton is developed. From host-rock to the center of the intrusion, the metapelites show destabilization of muscovite, appearance of sillimanite, spinel, cordierite, crystallization of a large amount of garnet and finally disappearance of biotite and potassic feldspar. As a consequence, the kinzigitic restites of the contact aureole are replaced by Grt-Sil-Crd-Spl granulites in an intra-plutonic position. Qualitative P-T estimates indicate a barrovian prograde path during D2, similar to P-T evolutions found in other Austroalpine units (e.g. Ulten zone). Thermodynamic modelling of the high-grade granulites due to the thermal effect of the ~290 Ma (U-Pb on zircon) mafic intrusion give conditions of ~6 kbar and > 900°C. Our results bring constrains on the thermal and mechanical relation between the pluton and the host rock in the middle crust and confirm the mid-crustal position of the Campo unit during the Permian. Furthermore, this study highlights the contrasted evolution of mid-crustal levels compared to lower-crustal systems such as the Ivrea zone. Eventually at a larger scale, these results provide insights on the tectonic and magmatic processes and thermal conditions of the continental crust during Variscan post-orogenic evolution.

Petri, Benoît; Mohn, Geoffroy; Štípská, Pavla; Manatschal, Gianreto; Schulmann, Karel

2014-05-01

97

Ecological aspects of phlebotomines (Diptera: Psychodidae) in endemic area of visceral leishmaniasis, Campo Grande, State of Mato Grosso do Sul, Brazil.  

PubMed

Aspects of phlebotomine behavior were investigated in the city of Campo Grande, Mato Grosso do Sul state. The insects were captured weekly during December 2003 to November 2005, with Centers for Disease Control light traps at seven different sites including forests and residential areas. In total, 11,024 specimens (7,805 males and 3,219 females) were collected, from which 9,963 (90.38%) were identified as Lutzomyia longipalpis, the proven vector of American visceral leishmaniasis agent. The remaining 9.62% comprised 21 species. L. longipalpis was the most frequent species in all sampled sites, and the first in the ranking of standardized species abundance index. In residential areas this species clearly predominated in the peridomicile (90.96%), in contrast to the intradomicile (9.04%); in animal shelters, it was more numerous in hen houses and prevailed at ground level, inside, and at forest edge around the residences; this aspect is worrying because this insect may remain sheltered in forested environments during the use of insecticides in homes. In the forest environment, other probable or proven vector of cutaneous leishmaniasis agents were also captured such as Lutzomyia whitmani (=Nyssomyia whitmani, sensu Galati), Lutzomyia antunesi (=Nyssomyia antunesi, sensu Galati), and Lutzomyia flaviscutellata (=Bichromomyia flaviscutellata, sensu Galati). PMID:22308770

Oliveira, Alessandra Gutierrez; Galati, Eunice Aparecida Bianchi; Fernandes, Carlos Eurico; Dorval, Maria Elizabeth Cavalheiros; Brazil, Reginaldo Peçanha

2012-01-01

98

226Ra, 228Ra and 228Th in scale and sludge samples from the Campos Basin oilfield E&P activities.  

PubMed

More than 40 scale and sludge samples from the Campos Basin oilfield were analysed in terms of 226Ra, 228Ra and 228Th. Although the exact origin of the samples was not known, scale samples derived from production pipes and sludge samples from water-oil separation units. Reported values ranged from 0.13 to 331 kBq.kg(-1) for 226Ra, from 0.10 to 245 kBq.kg(-1) for 228Ra and <0.10 to 272 kBq.kg(-1) for 228Th in sludge samples. The concentrations in scales were much more regular than in sludges and ranged from 16.2 to 93.2 kBq.kg(-1) for 226Ra, from 4.0 to 36.9 kBq.kg(-1) for 228Ra and from 4.5 to 18.5 kBq.kg(-1) for 228Th. Based on the Basic Safety Standards recommendations and on the derived results, these activities cannot be regarded as exempted and specific procedures should be designed for their radiological control. PMID:12408495

Matta, L E; Godoy, J M; Reis, M C

2002-01-01

99

Document image archive transfer from DOS to UNIX  

NASA Technical Reports Server (NTRS)

An R&D division of the National Library of Medicine has developed a prototype system for automated document image delivery as an adjunct to the labor-intensive manual interlibrary loan service of the library. The document image archive is implemented by a PC controlled bank of optical disk drives which use 12 inch WORM platters containing bitmapped images of over 200,000 pages of medical journals. Following three years of routine operation which resulted in serving patrons with articles both by mail and fax, an effort is underway to relocate the storage environment from the DOS-based system to a UNIX-based jukebox whose magneto-optical erasable 5 1/4 inch platters hold the images. This paper describes the deficiencies of the current storage system, the design issues of modifying several modules in the system, the alternatives proposed and the tradeoffs involved.

Hauser, Susan E.; Gill, Michael J.; Thoma, George R.

1994-01-01

100

Programa de Ps-Graduao em Cincia dos Alimentos CAL/CCA/UFSC Regimento Interno  

E-print Network

1 Programa de Pós-Graduação em Ciência dos Alimentos CAL/CCA/UFSC Regimento Interno UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO DE CI�NCIAS AGRÁRIAS PROGRAMA DE P�S-GRADUA��O EM CI�NCIA DOS ALIMENTOS REGIMENTO DO PROGRAMA TÍTULO I DO OBJETIVO Art. 1. O Programa de Pós-Graduação em Ciência dos Alimentos

Floeter, Sergio Ricardo

101

MAC320 INTRODUC ~AO `A TEORIA DOS GRAFOS INFORMAC ~OES GERAIS  

E-print Network

MAC320 INTRODUC¸ ~AO `A TEORIA DOS GRAFOS INFORMAC¸ ~OES GERAIS Bem-vindos `a edi¸c~ao do 2o. semestre de 2010 de MAC320, Introdu¸c~ao `a Teoria dos Grafos. Esta ´e uma disciplina do Bacharelado em Ci^encia da Computa¸c~ao do IME/USP. Objetivos da disciplina: Estudar os elementos fundamentais da teoria dos

Kohayakawa, Yoshiharu

102

Teoria dos Corpos 3o Exame de Melhoria de Nota 1a  

E-print Network

Teoria dos Corpos ­ 3o ano Exame de Melhoria de Nota 1a ´epoca ­ 21 de Janeiro de 2005 Dura¸c~ao: 3 nota da disciplina de Teoria dos Corpos (do antigo plano de estudos das licenciaturas em Matem´atica e Ensino da Matem´atica). · O exame de Teoria dos Corpos coincide em parte com o exame de Teoria de Galois

St Andrews, University of

103

Effects of non-aqueous fluids-associated drill cuttings discharge on shelf break macrobenthic communities in the Campos Basin, Brazil.  

PubMed

This paper assesses the effects of non-aqueous fluids (NAF)-associated drill cuttings discharge on shelf break macrobenthic communities in the Campos Basin, off the southeast Brazilian coast, Rio de Janeiro State. Samples were taken with a 0.25-m2 box corer from surrounding two oil and gas wells on three monitoring cruises: before drilling, three months after drilling, and 22 months after drilling. Statistical methodologies used Bayesian geostatistical and analysis of variance models to evaluate the effects of the NAF-associated drill cuttings discharge and to define the impact area. The results indicated that marked variations were not observed in the number of families between cruises, though there were changes in the fauna composition. The changes seen in biological descriptors in both control and background situation areas were not considered significant, showing a temporal homogeneity in means. The impact area presented changes in biological descriptors of communities and trophic structure during the three cruises and such changes were correlated to chemical and physical variables related to the drilling activities, as a result of the mix of drill cuttings and sediment and the anoxic conditions established in the substrate. In that area, three months after drilling, a decrease in diversity and an increase in density, motile deposit-feeders and Pol/Crp ratio, and dominance of opportunistic organisms, such as the capitellid Capitella sp., were observed and, 22 months after drilling, an increase of diversity, reduction of dominance of capitellid polychaete, changes in the fauna composition, and a dominance of opportunistic burrowing and tube-building organisms were observed, indicating an ecological succession process. PMID:20524059

Santos, Maria Fernanda L; Silva, Janete; Fachel, Jandyra M G; Pulgati, Fernando H

2010-08-01

104

A violação positiva do contrato e o inadimplento dos deveres larterais impostos pela boa-fé.  

E-print Network

??A complexidade das relações sociais notadamente após o advento da grande segunda guerra, influenciou decisivamente, a legislação doutrina e jurisprudência dos países europeus consagrando uma… (more)

Rafael Marinangelo

2005-01-01

105

Queda dos homicídios em São Paulo, Brasil: uma análise descritiva  

PubMed Central

Objetivo Descrever a evolução da mortalidade por homicídios no Município de São Paulo segundo tipo de arma, sexo, raça ou cor, idade e áreas de exclusão/inclusão social entre 1996 e 2008. Métodos Estudo ecológico de série temporal. Os dados sobre óbitos ocorridos no Município foram coletados da base de dados do Programa de Aprimoramento das Informações sobre Mortalidade, seguindo a Classificação Internacional de Doenças, Décima Revisão (CID-10). Foram calculadas as taxas de mortalidade por homicídio (TMH) para a população total, por sexo, raça ou cor, faixa etária, tipo de arma e área de exclusão/inclusão social. As TMH foram padronizadas por idade pelo método direto. Foram calculados os percentuais de variação no período estudado. Para as áreas de exclusão/inclusão social foram calculados os riscos relativos de morte por homicídio. Resultados As TMH apresentaram queda de 73,7% entre 2001 e 2008. Foi observada redução da TMH em todos os grupos analisados, mais pronunciada em homens (?74,5%), jovens de 15 a 24 anos (?78,0%) e moradores de áreas de exclusão social extrema (?79,3%). A redução ocorreu, sobretudo, nos homicídios cometidos com armas de fogo (?74,1%). O risco relativo de morte por homicídio nas áreas de exclusão extrema (tendo como referência áreas com algum grau de exclusão social) foi de 2,77 em 1996, 3,9 em 2001 e 2,13 em 2008. Nas áreas de alta exclusão social, o risco relativo foi de 2,07 em 1996 e 1,96 em 2008. Conclusões Para compreender a redução dos homicídios no Município, é importante considerar macrodeterminantes que atingem todo o Município e todos os subgrupos populacionais e microdeterminantes que atuam localmente, influenciando de forma diferenciada os homicídios com armas de fogo e os homicídios na população jovem, no sexo masculino e em residentes em áreas de alta exclusão social. PMID:21390415

Peres, Maria Fernanda Tourinho; Vicentin, Diego; Nery, Marcelo Batista; de Lima, Renato Sérgio; de Souza, Edinilsa Ramos; Cerda, Magdalena; Cardia, Nancy; Adorno, e Sérgio

2012-01-01

106

The Dormancy Regulator DosR Controls Ribosome Stability in Hypoxic Mycobacteria*  

PubMed Central

It is thought that during latent infection, Mycobacterium tuberculosis bacilli are retained within granulomas in a low-oxygen environment. The dormancy survival (Dos) regulon, regulated by the response regulator DosR, appears to be essential for hypoxic survival in M. tuberculosis, but it is not known how the regulon promotes survival. Here we report that mycobacteria, in contrast to enteric bacteria, do not form higher-order structures (e.g. ribosomal dimers) upon entry into stasis. Instead, ribosomes are stabilized in the associated form (70S). Using a strategy incorporating microfluidic, proteomic, and ribosomal profiling techniques to elucidate the fate of mycobacterial ribosomes during hypoxic stasis, we show that the dormancy regulator DosR is required for optimal ribosome stabilization. We present evidence that the majority of this effect is mediated by the DosR-regulated protein MSMEG_3935 (a S30AE domain protein), which is associated with the ribosome under hypoxic conditions. A ?3935 mutant phenocopies the ?dosR mutant during hypoxia, and complementation of ?dosR with the MSMEG_3935 gene leads to complete recovery of dosR mutant phenotypes during hypoxia. We suggest that this protein is named ribosome-associated factor under hypoxia (RafH) and that it is the major factor responsible for DosR-mediated hypoxic survival in mycobacteria. PMID:22544737

Trauner, Andrej; Lougheed, Kathryn E. A.; Bennett, Mark H.; Hingley-Wilson, Suzanne M.; Williams, Huw D.

2012-01-01

107

The Mystery of Dos Bocas Reservoir, Puerto Rico: Explaining Extreme Spatial Heterogeneity in Largemouth Bass Distribution  

E-print Network

The Mystery of Dos Bocas Reservoir, Puerto Rico: Explaining Extreme Spatial Heterogeneity.--Dos Bocas Reservoir, Puerto Rico, has pronounced in-lake variability in fish distributions, especially in piscivore abundance, between the two primary reservoir basins. We quantified fish community distributions

Cope, W. Gregory

108

Probabilistic model checking of CAPTCHA admission control for DoS resistant anti-SPIT  

E-print Network

Probabilistic model checking of CAPTCHA admission control for DoS resistant anti-SPIT protection SPAM over Internet Telephony (SPIT). A well-established method to tackle SPIT is the use of CAPTCHAs. CAPTCHAs are vulnerable to Denial of Service (DoS) attacks, due to their excessive demands for bandwidth

Katsaros, Panagiotis

109

[Geography, health and urban development in São Paulo state at the turn of the twentieth century: Domingos Jaguaribe and the construction of the Climate Resort of Campos do Jordão.  

PubMed

The resort towns created in the early 1900s are prime objects for studying the relationship between public health policies and urban and social development. This article analyzes the social and institutional vectors involved in the creation of the resort town of Campos do Jordão from the perspective of the career and works of physician, geographer and businessman Domingos Nogueira Jaguaribe Filho. Geographical studies, medical knowledge and the precepts of urbanization combined with private and development interests in the symbolism and concrete manifestation of the "Brazilian Switzerland". PMID:25388443

Vianna, Paula V Carnevale; Zanetti, Valéria; Papali, Maria Aparecida

2014-11-01

110

Image processing and roughness analysis of exposed bedrock fault planes as a tool for paleoseismological analysis: results from the Campo Felice fault (central Apennines, Italy)  

NASA Astrophysics Data System (ADS)

Morphologic investigations along the Campo Felice (CF) fault (central Apennines, Italy) have been made in order to develop a procedure for the paleoseismological analysis of bedrock fault scarps. The CF fault has been responsible for the formation of an impressive limestone fault scarp. Geomorphologic work on the CF basin and related fault indicated that the scarp originated from tectonic fault displacements. Three morphologic units have been distinguished along the fault scarp and defined as morphosome M1 (lowest part of the scarp), M2 and M3 (the uppermost part). These units display different karstic features, which are the result of their different duration of exposure to weathering. Micromorphologic analyses focused on the morphosome M1, along which the CF fault plane is exposed for a height ranging between 4 and 7 m. These analyses were aimed at defining differently weathered bands located at various heights, and parallel to the fault scarp top and base. The presence of these bands suggests repeated fault movements. The exposed fault surface displays a low-grade biokarstic weathering due to the action of epilithic and endolithic organisms. The biokarst distribution is, however, inhomogeneous and conditioned by the presence of nourishing elements, moisture and by light intensity. An area preferentially affected by the biokarstic processes develops as a band at the bedrock-soil contact at the base of the scarp. Roughness and colour analyses were made to identify uplifted bands which previously formed at the bedrock-soil contact. The roughness analysis was made using a microroughness-meter along 20-cm long horizontal transects repeated each 20 cm of fault height for the entire morphosome M1, at various sites along the scarp. The roughness variance data, plotted vs. the fault height, failed to identify differently weathered bands of paleoseismological interest. This result is probably due to the complex distribution of biokarst along the investigated fault plane. More reliable results have been obtained by areal analysis of the variation of the colour rendering of the rocks exposed along the fault plane at different sites. Photographic images of large portions of fault surfaces have been processed with standard graphic computer programs. The variations of colour indicated the presence of bands at various heights along the fault plane. Two uplifted bands have been recognised at all the investigated sites suggesting two displacement events (E1 and E2). A preliminary chronological framework for these two events, the youngest of which affected the CF fault, can be derived from the paleoseismological data available for the southernmost branch of the regional fault system that includes the CF fault. According to these data, E1 may have occurred between 860 and 1300 AD, while E2 may have occurred at about 1900 BC. Work is in progress to define surface exposure ages of different parts of the fault plane by means of in situ produced cosmogenic 36Cl. This procedure will give further chronological constraints for the age of E1 and E2 and will also permit to test the validity of the micromorphologic analysis of bedrock fault scarps for paleoseismological aims.

Giaccio, B.; Galadini, F.; Sposato, A.; Messina, P.; Moro, M.; Zreda, M.; Cittadini, A.; Salvi, S.; Todero, A.

2003-01-01

111

Bourgin-Yang Theorem for G-equivariant Edivaldo Lopes dos Santos -UFSCar  

E-print Network

. Marzantowicz - AMU - Pozna´n-Poland & D. de Mattos - ICMC - USP Florida State University Tallahassee February, is analogous. [Munkholm, Izydorek & Rybicki, de Mattos & dos Santos, ... ] #12;Bourgin-Yang proved

112

An integrated machine learning approach for predicting DosR-regulated genes in Mycobacterium tuberculosis  

E-print Network

Abstract Background DosR is an important regulator of the response to stress such as limited oxygen availability in Mycobacterium tuberculosis. Time course gene expression data enable us to dissect this response on the gene regulatory level. The m...

Zhang, Yi; Hatch, Kim A; Bacon, Joanna; Wernisch, Lorenz

2010-03-31

113

DoS Defense in Structured Peer-to-Peer Networks  

Microsoft Academic Search

Denial of service (DoS) attacks are a large and increasing threat to the Internet community. In this paper, we propose using a distributed approach to DoS defense. Our archi- tecture leverages the properties of a wide-area overlay net- work to isolate clusters of attackers while denying access to a minimal amount of legitimate users. This is done by col- laborating

Pete Perlegos

2004-01-01

114

Measurements of degree of sensitization (DoS) in aluminum alloys using EMAT ultrasound.  

PubMed

Sensitization in 5XXX aluminum alloys is an insidious problem characterized by the gradual formation and growth of beta phase (Mg(2)Al(3)) at grain boundaries, which increases the susceptibility of alloys to intergranular corrosion (IGC) and intergranular stress-corrosion cracking (IGSCC). The degree of sensitization (DoS) is currently quantified by the ASTM G67 Nitric Acid Mass Loss Test, which is destructive and time consuming. A fast, reliable, and non-destructive method for rapid detection and the assessment of the condition of DoS in AA5XXX aluminum alloys in the field is highly desirable. In this paper, we describe a non-destructive method for measurements of DoS in aluminum alloys with an electromagnetic acoustic transducer (EMAT). AA5083 aluminum alloy samples were sensitized at 100°C with processing times varying from 7days to 30days. The DoS of sensitized samples was first quantified with the ASTM 67 test in the laboratory. Both ultrasonic velocity and attenuation in sensitized specimens were then measured using EMAT and the results were correlated with the DoS data. We found that the longitudinal wave velocity was almost a constant, independent of the sensitization, which suggests that the longitudinal wave can be used to determine the sample thickness. The shear wave velocity and especially the shear wave attenuation are sensitive to DoS. Relationships between DoS and the shear velocity, as well as the shear attenuation have been established. Finally, we performed the data mining to evaluate and improve the accuracy in the measurements of DoS in aluminum alloys with EMAT. PMID:21232777

Li, Fang; Xiang, Dan; Qin, Yexian; Pond, Robert B; Slusarski, Kyle

2011-07-01

115

Dinâmica dos usos e coberturas da terra em Área de Preservação Permanente na Bacia Hidrográfica dos Rios Mogi Guaçu e Pardo, no período entre 1988 e 2002  

Microsoft Academic Search

O objetivo deste trabalho foi estudar a dinâmica de uso e ocupação da terra em Áreas de Preservação Permanente – APPs - na Bacia Hidrográfica dos Rios Mogi Guaçu e Pardo, estado de São Paulo, de modo a subsidiar a formulação de políticas públicas. As APPs foram identificadas e mapeadas usando imagens do Landsat-7. O uso antrópico em áreas de

Luis Alberto Ambrosio; Maria Do Carmo Ramos Fasiaben; Jener Fernando Leite De Moraes

2008-01-01

116

Phosphodiesterase DosP increases persistence by reducing cAMP which reduces the signal indole.  

PubMed

Persisters are bacteria that are highly tolerant to antibiotics due to their dormant state and are of clinical significance owing to their role in infections. Given that the population of persisters increases in biofilms and that cyclic diguanylate (c-di-GMP) is an intracellular signal that increases biofilm formation, we sought to determine whether c-di-GMP has a role in bacterial persistence. By examining the effect of 30 genes from Escherichia coli, including diguanylate cyclases that synthesize c-di-GMP and phosphodiesterases that breakdown c-di-GMP, we determined that DosP (direct oxygen sensing phosphodiesterase) increases persistence by over a thousand fold. Using both transcriptomic and proteomic approaches, we determined that DosP increases persistence by decreasing tryptophanase activity and thus indole. Corroborating this effect, addition of indole reduced persistence. Despite the role of DosP as a c-di-GMP phosphodiesterase, the decrease in tryptophanase activity was found to be a result of cyclic adenosine monophosphate (cAMP) phosphodiesterase activity. Corroborating this result, the reduction of cAMP via CpdA, a cAMP-specific phosphodiesterase, increased persistence and reduced indole levels similarly to DosP. Therefore, phosphodiesterase DosP increases persistence by reducing the interkingdom signal indole via reduction of the global regulator cAMP. Biotechnol. Bioeng. 2015;112: 588-600. © 2014 Wiley Periodicals, Inc. PMID:25219496

Kwan, Brian W; Osbourne, Devon O; Hu, Ying; Benedik, Michael J; Wood, Thomas K

2015-03-01

117

Governo apresenta reforma da rede do Superior em Maro sem contributo dos reitores  

E-print Network

Governo apresenta reforma da rede do Superior em Março sem contributo dos reitores O Ministério da a racionalização da rede do Superior que vai passar pela cria- ção de consórcios entre universida- des e

Instituto de Sistemas e Robotica

118

Low-Budget, Cost-Effective OCR: Optical Character Recognition for MS-DOS Micros.  

ERIC Educational Resources Information Center

Discusses optical character recognition (OCR) for use with MS-DOS microcomputers. Cost effectiveness is considered, three types of software approaches to character recognition are explained, hardware and operation requirements are described, possible library applications are discussed, future OCR developments are suggested, and a list of OCR…

Perez, Ernest

1990-01-01

119

Maturidade óssea: estimação utilizando dimensões dos centros de ossificação com o auxílio de SNAKES  

Microsoft Academic Search

Resumo - A estimação da maturidade óssea é uma das mais importantes características na análise de radiografia carpal na área da radiologia pediátrica. A maturidade pode ser obtida através da análise de características encontradas nos centros de ossificação dos ossos da mão. Os métodos de estimativa da idade óssea utilizados atualmente apresentam alto grau de complexidade para a estimação, acarretando

Celso Olivete Júnior; Evandro Luís; Linhari Rodrigues

120

Modelando a volatilidade dos retornos de Petrobrás usando dados de alta frequência  

Microsoft Academic Search

O objetivo do presente trabalho é analisar as características empíricas de uma série deretornos de dados em alta freqüência para um dos ativos mais negociados na Bolsa de Valoresde São Paulo. Estamos interessados em modelar a volatilidade condicional destes retornos,testando em particular a presença de memória longa, entre outros fenômenos que caracterizameste tipo de dados. Nossa investigação revela que além

Leonardo Cappa; Pedro Luiz Valls Pereira

2010-01-01

121

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos Jr.  

E-print Network

Energy Conversion Unit with Optimized Waveform Generation Sally Sajadian and Euzeli C. dos Santos to increase the efficiency of the devices dealing with energy conversion. The power supplies devices able and interleaved converters. This paper proposes an energy conversion unit constituted by a single-phase DC

Zhou, Yaoqi

122

Dos comunicaciones.  

E-print Network

¡afortunadamente! teatrales ni "artísticas." El lenguaje periodístico, los anuncios de las latas de conservas, los folletos de turismo, los libros de oraciones, los libros de matemáticas, los "comics," los chistes que se oyen en los bares, los letreros o...

Dí az, Jorge

1970-10-01

123

Qual o Papel da Escola e da Mídia na Obtenção dos Conhecimentos Astronômicos?  

NASA Astrophysics Data System (ADS)

É amplamente reconhecido que as pessoas em geral têm grande fascínio e interesse pela Astronomia. Por outro lado, o conteúdo dessa área incluído no ensino formal está longe de ser abrangente e suficiente para suprir a demanda. Esse interesse permite aperfeiçoar a divulgação e o ensino não formal de Astronomia através da mídia aliando a adequação do conteúdo à expectativa das pessoas. A reforma do Currículo Básico da Escola Pública da maioria dos Estados brasileiros tem introduzido Astronomia desde a pré-escola até o Ensino Médio. Num estudo realizado com 1180 alunos do Ensino Médio de seis escolas estaduais, revelou-se através da aplicação de um formulário contendo questões que abordavam conhecimentos básicos em Astronomia, como foram adquiridos tais conhecimentos e à infra-estrutura da escola. Para 66,1% dos entrevistados o professor já fez alguma apresentação a respeito de Astronomia. O presente estudo revelou também que 54,4% dos alunos entrevistados adquiriram seus conhecimentos astronômicos na escola, 18,4% através da televisão e 27,1% afirmaram que seus conhecimentos foram obtidos através de outros tipos de mídia (internet, livros didáticos, filmes e revistas). Embora o estudo revele claramente que há certo equilíbrio no meio em que os alunos obtiveram seus conhecimentos astronômicos, a mídia busca não somente sua difusão, mas a disponibilização desse conhecimento de maneira correta, que às vezes, não é atingido, apresentando conceitos sem fundamentação e incorretos. Por outro lado, no dia-a-dia escolar, é comum encontrar professores que vêm para as aulas com concepções prévias, que podem diferir substancialmente das idéias a serem ensinadas, dificultando o aprendizado de futuros conceitos científicos. Uma avaliação criteriosa, avaliando as dificuldades dos professores em determinar o sentido correto dos conceitos e observando a metodologia que utilizam no ensino, poderá proporcionar uma melhor compreensão sobre as concepções alternativas, presentes no ensino de Astronomia.

da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

2007-08-01

124

Análise dos Conceitos Astronômicos Apresentados por Professores de Algumas Escolas Estaduais Brasileiras  

NASA Astrophysics Data System (ADS)

A razão para o desenvolvimento deste trabalho baseia-se no fato de que muitos professores da Educação Básica (EB) não lidam com conceitos relacionados à astronomia, e quando o fazem eles simplesmente seguem livros didáticos que podem conter erros conceituais. Como é de conhecimento geral a astronomia é um dos conteúdos a serem ensinados na EB fazendo parte dos Parâmetros Curriculares Nacionais e das Propostas Curriculares do Estado de São Paulo, mas é um fato, que vários pesquisadores apontam, a existência de muitos problemas no ensino da astronomia. Com o propósito de minimizar algumas dessas deficiências foi realizado um trabalho de pesquisa com a utilização de questionários pré e pós pesquisa, para tanto foi desenvolvido um Curso de Extensão Universitária para professores da Diretoria de Ensino Regional (DE) que abrange Mauá, Ribeirão Pires e Rio Grande da Serra (no Estado de São Paulo) com os seguintes objetivos: levantar concepções alternativas; subsidiar os professores por meio de palestras, debates e workshops, e verificar o sucesso da aprendizagem após o curso, adotando-se como referência, para a análise dos resultados, os dicionários de Língua Portuguesa (FERREIRA, 2004) e Enciclopédico de Astronomia e Astronáutica (MOUR?O, 1995). Portanto, dezesseis questões foram aplicadas antes e após o curso, assim pode-se verificar após a pesquisa que 100,0% dos professores sabiam os nomes das fases da Lua, 97,0% entenderam que o Sistema Solar é composto por oito planetas, 78,1% foram capazes de explicar como ocorre um eclipse lunar, um eclipse solar e um solstício, 72,7% sabiam como explicar a ocorrência das estações do ano; 64,5% explicaram corretamente a ocorrência do equinócio, 89,7% foram capazes de definir adequadamente o termo cometa; 63,6% definiram asteróide, 54,5% meteoro, 58,1% galáxia, e 42,4% planeta. Os resultados obtidos indicam uma aprendizagem significativa por parte dos participantes.

Voelzke, Marcos Rincon; Gonzaga, Edson Pereira

2011-12-01

125

Observational Assessment of Preschool Disruptive Behavior, Part II: Validity of the Disruptive Behavior Diagnostic Observation Schedule (DB-DOS)  

ERIC Educational Resources Information Center

A study is conducted to determine whether the multidomain, multicontext Disruptive Behavior Diagnostic Observation Schedule (DB-DOS) is a valid observational method for assessing disruptive behavior of preschool children. It is concluded that the DB-DOS is a valid method for a direct observational assessment of clinically significant disruptive…

Wakschlag, Lauren S.; Briggs-Gowan, Margaret J.; Hill, Carri; Danis, Barbara; Leventhal, Bennett L.; Keenan, Kate; Egger, Helen L.; Cicchetti, Domenic; Burns, James; Carter, Alice S.

2008-01-01

126

FUNDAMENTACIN El tenis es un popular deporte de raqueta a nivel mundial. Se puede jugar entre dos  

E-print Network

TENIS FUNDAMENTACI�N El tenis es un popular deporte de raqueta a nivel mundial. Se puede jugar entre dos personas en individuales y entre dos parejas en dobles. Este deporte es uno de los más famosos en el mundo, destacando en mundiales y olimpiadas. Es considerado un deporte profesional y es jugado

Escolano, Francisco

127

Trace Element Distribution Between Olivine and Kirschsteinite in Angra Dos Reis  

NASA Technical Reports Server (NTRS)

The angrites are a small and enigmatic group of basaltic achondrites that possess unique mineralogical and chemical properties. The dominant mineralogy of the seven angrite members (Angra dos Reis, LEW 86010, LEW 87051, Asuka 881371, Sahara 99555, D Orbigny, and a new Moroccan member) is fassaite, olivine, and plagioclase. Angrites display a wide range of thermal histories, with Angra dos Reis (AdoR) exhibiting a cooling history different from that of the rapidly cooled members and from LEW86010, a more slowly cooled member. AdoR could represent either a cumulate or a porphyritic igneous rock that was later altered by metamorphism. We are re-examining the thermal history of AdoR in light of the more recently described angrite members. Our emphasis is a trace element study of low-Ca olivine, which we refer to as olivine, and high-Ca olivine, which we refer to as kirschsteinite, in AdoR.

Fittipaldo, M. M.; Jones, R. H.; Shearer, C. K.

2003-01-01

128

Investigação dos perfís temporais de alta resolução de explosões solares tipo-III decimétricas  

NASA Astrophysics Data System (ADS)

Explosões solares tipo-III indicam a presença de feixes de elétrons acelerados durante "flares" solares. Sua investigação fornece informações tanto sobre os processos de aceleração de partículas quanto das características do agente causador e do local de aceleração. Explosões tipo-III decimétricas são geradas por feixes de elétrons viajando através de arcos magnéticos densos da baixa coroa solar. Os perfís temporais destes fenômenos, quando tomados com alta resolução, informam sobre os mecanismos de aceleração de partículas do feixe e o meio de transporte da energia liberada a partir da região de aceleração. Usando o Brazilian Solar Spectroscope (BSS), em operação no INPE, foram registradas dezenas de explosões tipo-III decimétricas, dentro da faixa de 2050-2250 MHz com alta resolução temporal (20 ms), em 13 de setembro de 2001, entre 13:00 e 16:10 UT. Foram selecionadas 10 explosões isoladas para uma investigação estatística detalhada de seus perfís temporais, em todos os cerca de 50 canais de freqüência. Os resultados indicam que cerca de 70% dos perfís temporais são complexos tanto durante a subida quanto descida. Os 30% restantes indicam que os perfís da subida podem ser bem representados, na maioria dos casos, por um processo não-linear e uma parcela significativa por processos lineares. Os perfís temporais da descida são dominados por um decaimento não-linear. Neste trabalho, será efetuada uma análise dos perfís temporais, tanto durante a subida quanto descida do fluxo, para as explosões selecionadas, em termos dos prováveis mecanismos de aceleração e relaxamento. 2

Cecatto, J. R.; Fernandes, F. C. R.; Sawant, H. S.; Madsen, F. R. H.

2003-08-01

129

The excitation of the Na airglow from Coqui Dos rocket and ground-based observations  

Microsoft Academic Search

On February 20 1998 two rockets were launched from Puerto Rico as part of the Coqui Dos campaign. Data from on-board photometers and ground-based data from a Na lidar and an airglow imager allowed an estimate to be made, using both the TIME-GCM and MSIS models, of the branching coefficient alpha for the Na airglow emission. Assuming the hydrogen density

J. H. Hecht; S. Collins; C. Kruschwitz; M. C. Kelley; R. L. Walterscheid

2000-01-01

130

Sm-Nd-Pu timepieces in the Angra DOS Reis meteorite  

Microsoft Academic Search

Isotope ratios and age estimations are presented for the ultramafic pyroxenite Angra dos Reis meteorite. A pyroxene-phosphate internal isochron age of 4.55 plus or minus 0.04 eons was obtained, in agreement with reported Pb-Pb ages. It is suggested that Sm-146 decay led to an increase in the ratio of Nd-142 to Nd-144 in pyroxene, which is greater than the ratio

G. W. Lugmair; K. Marti

1977-01-01

131

livro de reclamaes dos estudantes do superior j tem milhares de pginas  

E-print Network

livro de reclamações dos estudantes do superior já tem milhares de páginas Das dificuldades em. Depois, as reclamações vão ser reuni- das em livro e enviadas ao Presidente da República e ao Governo num livro, que será enviado ao Presidente da República, Cavaco Silva, ao primeiro-ministro, Pedro

Instituto de Sistemas e Robotica

132

FlexyDos3D: a deformable anthropomorphic 3D radiation dosimeter: radiation properties.  

PubMed

Three dimensional radiation dosimetry has received growing interest with the implementation of highly conformal radiotherapy treatments. The radiotherapy community faces new challenges with the commissioning of image guided and image gated radiotherapy treatments (IGRT) and deformable image registration software.A new three dimensional anthropomorphically shaped flexible dosimeter, further called 'FlexyDos3D', has been constructed and a new fast optical scanning method has been implemented that enables scanning of irregular shaped dosimeters. The FlexyDos3D phantom can be actuated and deformed during the actual treatment. FlexyDos3D offers the additional advantage that it is easy to fabricate, is non-toxic and can be molded in an arbitrary shape with high geometrical precision.The dosimeter formulation has been optimized in terms of dose sensitivity. The influence of the casting material and oxygen concentration has also been investigated. The radiophysical properties of this new dosimeter are discussed including stability, spatial integrity, temperature dependence of the dosimeter during radiation, readout and storage, dose rate dependence and tissue equivalence. PMID:25615261

De Deene, Y; Skyt, P S; Hil, R; Booth, J T

2015-02-21

133

FlexyDos3D: a deformable anthropomorphic 3D radiation dosimeter: radiation properties  

NASA Astrophysics Data System (ADS)

Three dimensional radiation dosimetry has received growing interest with the implementation of highly conformal radiotherapy treatments. The radiotherapy community faces new challenges with the commissioning of image guided and image gated radiotherapy treatments (IGRT) and deformable image registration software. A new three dimensional anthropomorphically shaped flexible dosimeter, further called ‘FlexyDos3D’, has been constructed and a new fast optical scanning method has been implemented that enables scanning of irregular shaped dosimeters. The FlexyDos3D phantom can be actuated and deformed during the actual treatment. FlexyDos3D offers the additional advantage that it is easy to fabricate, is non-toxic and can be molded in an arbitrary shape with high geometrical precision. The dosimeter formulation has been optimized in terms of dose sensitivity. The influence of the casting material and oxygen concentration has also been investigated. The radiophysical properties of this new dosimeter are discussed including stability, spatial integrity, temperature dependence of the dosimeter during radiation, readout and storage, dose rate dependence and tissue equivalence. The first authors Y De Deene and P S Skyt made an equivalent contribution to the experimental work presented in this paper.

De Deene, Y.; Skyt, P. S.; Hil, R.; Booth, J. T.

2015-02-01

134

Influence of pre-salt alignments in post-Aptian magmatism in the Cabo Frio High and its surroundings, Santos and Campos basins, SE Brazil: An example of non-plume-related magmatism  

NASA Astrophysics Data System (ADS)

This study, based on interpretations of 2D and 3D seismic data, onshore satellite data, and offshore seismic mapping and well data, addresses the geological evolution of Late Cretaceous and Early Tertiary magmatism in the offshore Cabo Frio area, at the border between the Santos and Campos basins, SE Brazil. The analysis of the available data set suggests an alternative genesis for this magmatism, different from the classic mantle plume model. Seismic mapping of the main feeder dikes reveals a predominant SE-NW orientation, coincident with the alignment of the Cruzeiro do Sul deformation zone, in which the Cabo Frio High is included. This observation is coherent with the characteristics of the major onshore Precambrian strike-slip faults, which were reactivated during the Cenozoic. The largest offshore volumes of magmatic rocks occur intercalated in the sedimentary section and at the intersections of two fault alignments: a SE-NW, strike-slip fault trend and a SW-NE, normal fault trend, similar to the onshore alkaline bodies of the Poços de Caldas-Cabo Frio alignment. The possibly reactivated faults (mainly SE-NW transfer faults) could have cut through the whole lithosphere, reached the asthenosphere, and caused partial melting simply by pressure release.

Oreiro, Sérgio Goulart; Cupertino, José Antônio; Szatmari, Peter; Filho, Antônio Thomaz

2008-02-01

135

An integrated machine learning approach for predicting DosR-regulated genes in Mycobacterium tuberculosis  

PubMed Central

Background DosR is an important regulator of the response to stress such as limited oxygen availability in Mycobacterium tuberculosis. Time course gene expression data enable us to dissect this response on the gene regulatory level. The mRNA expression profile of a regulator, however, is not necessarily a direct reflection of its activity. Knowing the transcription factor activity (TFA) can be exploited to predict novel target genes regulated by the same transcription factor. Various approaches have been proposed to reconstruct TFAs from gene expression data. Most of them capture only a first-order approximation to the complex transcriptional processes by assuming linear gene responses and linear dynamics in TFA, or ignore the temporal information in data from such systems. Results In this paper, we approach the problem of inferring dynamic hidden TFAs using Gaussian processes (GP). We are able to model dynamic TFAs and to account for both linear and nonlinear gene responses. To test the validity of the proposed approach, we reconstruct the hidden TFA of p53, a tumour suppressor activated by DNA damage, using published time course gene expression data. Our reconstructed TFA is closer to the experimentally determined profile of p53 concentration than that from the original study. We then apply the model to time course gene expression data obtained from chemostat cultures of M. tuberculosis under reduced oxygen availability. After estimation of the TFA of DosR based on a number of known target genes using the GP model, we predict novel DosR-regulated genes: the parameters of the model are interpreted as relevance parameters indicating an existing functional relationship between TFA and gene expression. We further improve the prediction by integrating promoter sequence information in a logistic regression model. Apart from the documented DosR-regulated genes, our prediction yields ten novel genes under direct control of DosR. Conclusions Chemostat cultures are an ideal experimental system for controlling noise and variability when monitoring the response of bacterial organisms such as M. tuberculosis to finely controlled changes in culture conditions and available metabolites. Nonlinear hidden TFA dynamics of regulators can be reconstructed remarkably well with Gaussian processes from such data. Moreover, estimated parameters of the GP can be used to assess whether a gene is controlled by the reconstructed TFA or not. It is straightforward to combine these parameters with further information, such as the presence of binding motifs, to increase prediction accuracy. PMID:20356371

2010-01-01

136

Crystal Structures of the Response Regulator DosR from Mycobacterium tuberculosis Suggest a Helix Rearrangement Mechanism for Phosphorylation Activation  

PubMed Central

The response regulator DosR is essential for promoting long-term survival of Mycobacterium tuberculosis under low oxygen conditions in a dormant state and may be responsible for latent tuberculosis in one third of the world’s population. Here we report crystal structures of full-length unphosphorylated DosR at 2.2 Å and its C-terminal DNA-binding domain at 1.7 Å resolution. The full-length DosR structure reveals several features never seen before in other response regulators. The N-terminal domain of the full-length DosR structure has an unexpected (??)4 topology instead of the canonical (??)5 fold observed in other response regulators. The linker region adopts a unique conformation which contains two helices forming a four-helix bundle with two helices from another subunit, resulting in dimer formation. The C-terminal domain in the full-length DosR structure displays a novel location of helix ?10 which provides Gln199 to interact with the catalytic Asp54 residue of the N-terminal domain. In contrast, the structure of the DosR C-terminal domain alone displays a remarkable unstructured conformation for helix ?10 residues different from the well-defined helical conformations in all other known structures, indicating considerable flexibility within the C-terminal domain. Our structures suggest a mode of DosR activation by phosphorylation via a helix rearrangement mechanism. PMID:18353359

Wisedchaisri, Goragot; Wu, Meiting; Sherman, David R.; Hol, Wim G. J.

2008-01-01

137

RESULTADO DO PROCESSO SELETIVO PARA BOLSISTAS DOS PROGRAMAS E PROJETOS DE EXTENSO DO MAE-UFPR -2014  

E-print Network

Wasen Bruna Diedrichs Barbosa #12;Jhenifer Alcântara Baptista Leonardo de Mattos Lima Marcelo Hoff dos Laryssa Paula Setim Matheus Henrique Alves Manhães Mylena Peixoto de Mattos Yuria Santamaria Pismel

Paraná, Universidade Federal do

138

A Bayesian Change point model for differential gene expression patterns of the DosR regulon of Mycobacterium tuberculosis  

E-print Network

Abstract Background Low oxygen availability has been shown previously to stimulate M. tuberculosis to establish non-replicative persistence in vitro. The two component sensor/regulator dosRS is a major mediator in the transcriptional response of M...

Zhang, Yi; Hatch, Kim A; Wernisch, Lorenz; Bacon, Joanna

2008-02-22

139

DoS detection in IEEE 802.11 with the presence of hidden nodes.  

PubMed

The paper presents a novel technique to detect Denial of Service (DoS) attacks applied by misbehaving nodes in wireless networks with the presence of hidden nodes employing the widely used IEEE 802.11 Distributed Coordination Function (DCF) protocols described in the IEEE standard [1]. Attacker nodes alter the IEEE 802.11 DCF firmware to illicitly capture the channel via elevating the probability of the average number of packets transmitted successfully using up the bandwidth share of the innocent nodes that follow the protocol standards. We obtained the theoretical network throughput by solving two-dimensional Markov Chain model as described by Bianchi [2], and Liu and Saadawi [3] to determine the channel capacity. We validated the results obtained via the theoretical computations with the results obtained by OPNET simulator [4] to define the baseline for the average attainable throughput in the channel under standard conditions where all nodes follow the standards. The main goal of the DoS attacker is to prevent the innocent nodes from accessing the channel and by capturing the channel's bandwidth. In addition, the attacker strives to appear as an innocent node that follows the standards. The protocol resides in every node to enable each node to police other nodes in its immediate wireless coverage area. All innocent nodes are able to detect and identify the DoS attacker in its wireless coverage area. We applied the protocol to two Physical Layer technologies: Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS) and the results are presented to validate the algorithm. PMID:25685510

Soryal, Joseph; Liu, Xijie; Saadawi, Tarek

2014-07-01

140

DoS detection in IEEE 802.11 with the presence of hidden nodes  

PubMed Central

The paper presents a novel technique to detect Denial of Service (DoS) attacks applied by misbehaving nodes in wireless networks with the presence of hidden nodes employing the widely used IEEE 802.11 Distributed Coordination Function (DCF) protocols described in the IEEE standard [1]. Attacker nodes alter the IEEE 802.11 DCF firmware to illicitly capture the channel via elevating the probability of the average number of packets transmitted successfully using up the bandwidth share of the innocent nodes that follow the protocol standards. We obtained the theoretical network throughput by solving two-dimensional Markov Chain model as described by Bianchi [2], and Liu and Saadawi [3] to determine the channel capacity. We validated the results obtained via the theoretical computations with the results obtained by OPNET simulator [4] to define the baseline for the average attainable throughput in the channel under standard conditions where all nodes follow the standards. The main goal of the DoS attacker is to prevent the innocent nodes from accessing the channel and by capturing the channel’s bandwidth. In addition, the attacker strives to appear as an innocent node that follows the standards. The protocol resides in every node to enable each node to police other nodes in its immediate wireless coverage area. All innocent nodes are able to detect and identify the DoS attacker in its wireless coverage area. We applied the protocol to two Physical Layer technologies: Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS) and the results are presented to validate the algorithm.

Soryal, Joseph; Liu, Xijie; Saadawi, Tarek

2013-01-01

141

Published as: Sofia Campos, Minh Ha-Duong, and Myriam Merad. Synthse de littrature sur l'acceptabilit sociale du captage et du stockage du CO2. Chapter 10 in Minh Ha-Duong and Naceur Chaabane, editors, Le captage et le stockage du CO2.  

E-print Network

'acceptabilité sociale du captage et du stockage du CO2. Chapter 10 in Minh Ha-Duong and Naceur Chaabane, editors, Le captage et le stockage du CO2. Enjeux techniques et sociaux en France, Quae, Collection Update Sciences stockage du CO2 Ana Sofia Campos1 , Minh Ha Duong1 , Myriam Merad2 1 CIRED, 2 INERIS Résumé L'analyse d

Boyer, Edmond

142

Volcanic and structural controls of mineralization in the Dos Cabezas Mountains of southeastern Arizona  

SciTech Connect

A combination of geophysical, geochemical, and geological features suggests that a central part of the Dos Cabezas Mountains probably has considerable potential for blind deposits, chiefly base metals. The area exposes the root zone of a Paleocene( ) volcanic complex and its underlying granitic stocks, which were emplaced next to a major northwest-trending, much reactivated fault zone. The new data, combined with the knowledge of past mining activity in the area, lead them to propose several exploration targets that may lead to ore bodies in breccia pipes along the base of the volcanic pile and along a possible concealed fault or caldera margin.

Drewes, H.; Klein, D.P.; Birmingham, S.D.

1988-01-01

143

John Dos Passos' theme of individual freedom in American society in the novel Midcentury  

E-print Network

seeking. He particularly valued freedom for every individual to act and think as he pleases, within the frame- work of laws. He bel1eved that America must return to those basic tenets of American democracy, so that in this technological and complex age...--finding each one a mode of regimentation corrupted by the dirty itch for power. " 3 Or, s, s enother scholar explains, Dos Passos "turned to sn historical investigation of the American past. This has led him to re)cot Marxism and Socialism and to embrace his...

Rundt, Antoinette Hasselbach

2012-06-07

144

Use of Remote Sensing and Local Knowledge for Geoconservation of Regiao dos Lagos, Brazil  

NASA Astrophysics Data System (ADS)

A series of lagoons can be found along the coastline of Rio de Janeiro, in the so-called Regiao dos Lagos. The lagoons differ in size, physicochemical, sedimentological and biological characteristics. Rare examples of litifying microbialites that produce stromatolites, the oldest fossils on Earth, can be found living in this lagoon system. The occurrence of stromatolites in the region is of great scientific interest because it enables the study of possible analogues of the earliest life on Earth. However, this region has been suffering from intense human activities and degradations. Geoconservation planning requires an assessment of the characteristics of the region and its potential threats. The primary goal of this study is to assess physical environmental changes and anthropogenic impacts over the last four decades in Regiao dos Lagos. Using a broad integrative assessment combining remote sensing, GIS, field studies and local knowledge of communities, land-cover and land-use classes were identified, as well as the main human activities impacting the environment. The seasonal and weekend tourism and urban sprawl in this coastal area of Rio de Janeiro triggers the occupation of new areas and the removal of natural vegetation, especially on lagoon margins. This disorderly occupation by an ever increasing population, with both legal and illegal constructions and the subsequent overload of the local infrastructure, e.g. increase of electrical energy consumption, volume of vehicles, pollution in air, water and soil and problems with water supply and wastewater treatment, are hastening the gradual degradation of the lake ecosystem. The main driving forces to environmental changes over the last four decades in Regiao dos Lagos were the change of dense vegetation, saline and bare soil classes into built-up areas, adding to the poor waste treatment and inadequate sewage disposal. This analysis provides a basis for a better control of anthropogenic impacts and geoconservation activities of the ';Geopark Costoes e Lagunas do Rio de Janeiro', which includes Regiao dos Lagos. The goals of the geopark are the conservation of a healthy environment, education in the Earth sciences and the fostering of local, sustainable economic development. It is essential that the local government and population support the geoconservation work and are involved in the planning and implementation of activities. The local knowledge about natural, cultural and economical particularities of the region and awareness on environmental issues are taken into consideration, in order to assist the development of specific geoconservation activities according to community needs.

Avelar, S.; Vasconcelos, G.; Mansur, K. L.; Anjos, S. C.

2013-12-01

145

RighTime: A real time clock correcting program for MS-DOS-based computer systems  

NASA Technical Reports Server (NTRS)

A computer program is described which effectively eliminates the misgivings of the DOS system clock in PC/AT-class computers. RighTime is a small, sophisticated memory-resident program that automatically corrects both the DOS system clock and the hardware 'CMOS' real time clock (RTC) in real time. RighTime learns what corrections are required without operator interaction beyond the occasional accurate time set. Both warm (power on) and cool (power off) errors are corrected, usually yielding better than one part per million accuracy in the typical desktop computer with no additional hardware, and RighTime increases the system clock resolution from approximately 0.0549 second to 0.01 second. Program tools are also available which allow visualization of RighTime's actions, verification of its performance, display of its history log, and which provide data for graphing of the system clock behavior. The program has found application in a wide variety of industries, including astronomy, satellite tracking, communications, broadcasting, transportation, public utilities, manufacturing, medicine, and the military.

Becker, G. Thomas

1993-01-01

146

Crystal Structures of the Response Regulator DosR From Mycobacterium Tuberculosis Suggest a Helix Rearrangement Mechanism for Phosphorylation Activation  

SciTech Connect

The response regulator DosR is essential for promoting long-term survival of Mycobacterium tuberculosis under low oxygen conditions in a dormant state and may be responsible for latent tuberculosis in one-third of the world's population. Here, we report crystal structures of full-length unphosphorylated DosR at 2.2 {angstrom} resolution and its C-terminal DNA-binding domain at 1.7 {angstrom} resolution. The full-length DosR structure reveals several features never seen before in other response regulators. The N-terminal domain of the full-length DosR structure has an unexpected ({beta}{alpha}){sub 4} topology instead of the canonical ({beta}{alpha}){sub 5} fold observed in other response regulators. The linker region adopts a unique conformation that contains two helices forming a four-helix bundle with two helices from another subunit, resulting in dimer formation. The C-terminal domain in the full-length DosR structure displays a novel location of helix {alpha}10, which allows Gln199 to interact with the catalytic Asp54 residue of the N-terminal domain. In contrast, the structure of the DosR C-terminal domain alone displays a remarkable unstructured conformation for helix {alpha}10 residues, different from the well-defined helical conformations in all other known structures, indicating considerable flexibility within the C-terminal domain. Our structures suggest a mode of DosR activation by phosphorylation via a helix rearrangement mechanism.

Wisedchaisri, G.; Wu, M.; Sherman, D.R.; Hol, W.G.J.

2009-05-26

147

On securing wireless sensor network--novel authentication scheme against DOS attacks.  

PubMed

Wireless sensor networks are generally deployed for collecting data from various environments. Several applications specific sensor network cryptography algorithms have been proposed in research. However WSN's has many constrictions, including low computation capability, less memory, limited energy resources, vulnerability to physical capture, which enforce unique security challenges needs to make a lot of improvements. This paper presents a novel security mechanism and algorithm for wireless sensor network security and also an application of this algorithm. The proposed scheme is given to strong authentication against Denial of Service Attacks (DOS). The scheme is simulated using network simulator2 (NS2). Then this scheme is analyzed based on the network packet delivery ratio and found that throughput has improved. PMID:25106827

Raja, K Nirmal; Beno, M Marsaline

2014-10-01

148

The excitation of the Na airglow from Coqui Dos rocket and ground-based observations  

NASA Astrophysics Data System (ADS)

On February 20 1998 two rockets were launched from Puerto Rico as part of the Coqui Dos campaign. Data from on-board photometers and ground-based data from a Na lidar and an airglow imager allowed an estimate to be made, using both the TIME-GCM and MSIS models, of the branching coefficient ? for the Na airglow emission. Assuming the hydrogen density is within the range predicted by the two models the data are consistent with ? being less than 0.05. This value is well below a recent theoretical estimate of 0.67 and also below the nominally accepted value of 0.1 derived from previous aeronomic data.

Hecht, J. H.; Collins, S.; Kruschwitz, C.; Kelley, M. C.; Roble, R. G.; Walterscheid, R. L.

2000-02-01

149

Age and isotopic relationships among the angrites Lewis Cliff 86010 and Angra dos Reis  

NASA Technical Reports Server (NTRS)

The paper presents results of a wide-ranging isotopic investigation of the the Antarctic angrite LEW-86010 (LEW), and reassesses the type angrite Angra dos Reis (ADOR) in order to obtain precise radiometric ages and initial Sr isotopic compositions, and to search for the erstwhile presence of the short-lived nuclei Sm-146 and Al-26 via their daughter products. The isotopic compositions of Sm, U, Ca, and Ti were measured to allow a detailed appraisal to be made of the relations between, and the geneology of, these two angrites. LEW proves to be severely contaminated with modern terrestrial Pb, which is shown to result from terrestrial weathering. Concordant Pb-Pb model ages of pyroxene separates are obtained; uranium isotopic compositions are normal within error. Overall, striking age and isotopic similarities between LEW and ADOR were found, suggesting almost simultaneous production on the same asteroid, even though recent experimental studies imply that the two are not comagmatic.

Lugmair, G. W.; Galer, S. J. G.

1992-01-01

150

An MS-DOS-based program for analyzing plutonium gamma-ray spectra  

SciTech Connect

A plutonium gamma-ray analysis system that operates on MS-DOS-based computers has been developed for the International Atomic Energy Agency (IAEA) to perform in-field analysis of plutonium gamma-ray spectra for plutonium isotopics. The program titled IAEAPU consists of three separate applications: a data-transfer application for transferring spectral data from a CICERO multichannel analyzer to a binary data file, a data-analysis application to analyze plutonium gamma-ray spectra, for plutonium isotopic ratios and weight percents of total plutonium, and a data-quality assurance application to check spectral data for proper data-acquisition setup and performance. Volume 3 contains the software listings for these applications.

Ruhter, W.D.; Buckley, W.M.

1989-09-07

151

Comparação dos acidentes causados por Bothropoides jararaca (Serpentes: Viperidae) com e sem envenenamento atendidos no Hospital Vital Brazil do Instituto Butantan.  

E-print Network

??No Brasil, 90% dos acidentes por serpentes peçonhentas são causadas por Bothropsafin (Bothrops, Bothropoides, Bothriopsis, Bothrocophias e Rhinocerophis), com predominância nos meses quentes e chuvosos,… (more)

Alessandra Furtado Nicoleti

2010-01-01

152

Rv3133c/dosR is a transcription factor that mediates the hypoxic response of M. tuberculosis  

E-print Network

1 Rv3133c/dosR is a transcription factor that mediates the hypoxic response of M. tuberculosis Heui tuberculosis can persist for years within humans in a clinically latent state. Latency is often linked to hypoxic conditions within the host. Among M. tuberculosis genes induced by hypoxia is a putative

Tompa, Martin

153

CRL4-like Clr4 complex in Schizosaccharomyces pombe depends on an exposed surface of Dos1 for  

E-print Network

cullin- RING ubiquitin ligase (CRL) including its cullin Cul4, the RING-box protein Pip1, the DNA damage, CLRC comprises the cullin scaffold protein Cul4, the RING finger pro- tein Pip1, and WD-40 -propeller-dependent H3K9 methylation (12). Rik1, Cul4, Pip1, and Dos1 show strong resemblance to sub- units of Cullin

Halazonetis, Thanos

154

ESTUDO DOS FATORES DE LOCALIZAÇÃO DE ABATEDOUROS E CENTROS DE DISTRIBUIÇÃO DE AGROINDUSTRIAS DE FRANGO DE CORTE  

Microsoft Academic Search

Buscou-se com este estudo a identificação dos principais fatores de localização de abatedouros de frangos de corte e centros de distribuição localizados no Distrito Federal e Entorno (GO). Por meio de aplicação de questionários semi-estruturados, aos gestores de quatro abatedouros e dois centros de distribuição, foram avaliados se os fatores clássicos de Localização e contemporâneos interferiam e em que medida

Eliane Almeida do Carmo; Joao Batista Soares; Marcos Aurelio Lopes

2008-01-01

155

insURGEnCiA Y REPREsiÓn. ACERCA DE LA TEORÍA DE LOs DOs DEMOniOs  

Microsoft Academic Search

Resumen: La conocida en Argentina como Teoría o tesis de los dos demonios se ha utilizado para, si no justificar, sí al menos querer dar una explica - ción simplista al advenimiento del golpe del gene- ral Videla y la consiguiente dictadura conocida en Argentina como el Proceso. El artículo analiza los discursos e imágenes sobre cada uno de los

José Manuel Barrio Terol

156

PT0100 DEBAT UNIVERSITARI PT0100 Descripci: s una iniciativa que pretn dos objectius: acostar a la  

E-print Network

PT0100 DEBAT UNIVERSITARI PT0100 Descripció: �s una iniciativa que pretén dos objectius: acostar ASSIGNATURES: (consultau-ne els subprogrames) PT0110 TALLER D'EXPRESSI� ORAL I CORPORAL: MILLORA LES TEVES COMPUTABLE A LES ASSIGNATURES: (consultau-ne els subprogrames) PT0120 LLIGA DE DEBAT UNIVERSITARI DE LA XARXA

Oro, Daniel

157

A proposed application of an industrial DOS computer for distribution substation monitoring and control  

SciTech Connect

This paper presents the design and implementation of an intelligent controller intended for use in distribution substations to perform monitoring and control duties within the framework of distribution automation needs. The hardware of the developed controller is a DOS based industrial computer running on ECB-BUS. The application software handles all input/output tasks, data collection, manipulation and control decisions with its flexible structure. This embedded controller measures bus voltage, transformer and feeder currents and calculates the real and reactive power, power factor, frequency, and total harmonic distortion of voltage and current. In addition to its local and remote data acquisition and monitoring functions by means of console and SCADA outputs, the system, through its relay outputs, is capable of performing automation tasks such as integrated Volt/Var control, overload and underfrequency detection and load shedding at the substation level. This reliable, high capacity and low cost system is completely programmable so that it can handle new requirements with new configurations easily.

Batur, I. (Electronics Industry Inc., Ankara (Turkey). Aselsan Military); Guven, A.N.; Ozay, N. (Middle East Technical Univ., Ankara (Turkey). Electrical Engineering Dept.)

1994-04-01

158

Creating a Global Fiducials Program (GFP) Site: Lago Cachet Dos example in Chile  

NASA Astrophysics Data System (ADS)

The USGS has been acquiring remotely sensed imagery from all over the world, collecting thousands of images at more than 200 sites, and creating Literal Image Derived Products (LIDPs) as part of the Global Fiducials Program (GFP). The GFP program enables scientists to use these images to study our rapidly changing planet at carefully selected locations around the world. New GFP Sites are created and added each year. Researchers at the University of Alaska, for instance, added areas susceptible to coastal erosion for monitoring the long-term effects of high tides and storms. This presentation will guide you through the process of creating a new GFP site for your area of interest. We will describe the components of the GFP and its archive, the Global Fiducials Library. The Global Fiducials Program—Initial Site Proposal form will be presented and we will show you how to complete each component in order to propose a new site. Lago Cachet Dos, a glacier-dammed lake in southern Chile, is currently being proposed as a new GFP site and will be used as the example for this exercise. In addition, USGS web sites will be used to illustrate how a long-term imagery record can tell a story and to demonstrate viewing and downloading the type of data that will be available online and free of charge through the GFP.

Friesen, B. A.; Nimick, D. A.; Wilson, E. M.

2012-12-01

159

Open Cluster Radial Velocity determination from observations at Observatório Pico Dos Dias  

NASA Astrophysics Data System (ADS)

In studies of the dynamics of the Galactic disk, such as the determination of the speed of the spiral pattern and the permanence of stars in the spiral arms, it is crucial to know orbits obtained from proper motions, radial velocities and the potential of the Galaxy. Aiming to improve the statistics of our catalog of open clusters, maintained by our research group, we determined the radial velocity of stars belonging to a group of open clusters using spectra with a resolution of 4000, obtained at the Pico dos Dias Observatory (LNA) with the 1.60 m telescope and the Coudé spectrograph. We observed the open cluster's member stars and calculated their radial speeds using standard techniques. The stars were selected from our own database based on relevant information concerning the clusters, obtained by statistical analysis of their proper motions and/or their position in the HR's diagram. In this work, we present the detailed analysis of the data reduction and radial velocity determination using synthetic spectra from different libraries. Finally we present the open cluster's radial (and spacial) velocities.

Faria, M. A. F.; Monteiro, H.; Dias, W. S.; Lépine, J. R. D.

2014-10-01

160

[Temporary and permanent breeding sites for Biomphalaria in Jaboatão dos Guararapes, PE].  

PubMed

A malacological survey of permanent and temporary breeding sites was conducted in the Piedade neighborhood of Jaboatão dos Guararapes, Pernambuco, between November 2006 and November 2007, with the aim of determining the malacological fauna at this locality, along with the potential for Schistosomiasis mansoni transmission. In addition to Biomphalaria glabrata (Say, 1818), the molluscs Drepanotrema cimex (Moricand, 1837), Pomacea sp and Melanoides tuberculatus (Muller, 1774) were collected. Among the specimens of Biomphalaria glabrata that were collected, 1,490 were found alive, and 74 (5%) were positive for Schistosoma mansoni. The largest numbers of molluscs collected, and all of the specimens that were positive for Schistosoma mansoni, were collected during the annual rainy season. The presence of larvae of other trematodes infecting the Biomphalaria glabrata molluscs was also observed. These trematodes were from the families Strigeidae and Diplostomatidae and, at first sight, they presented morphology that could lead to confusion with Schistosoma mansoni cercariae. Thus, knowledge of these trematodes becomes essential for the differential diagnosis of the etiological agent for schistosomiasis. PMID:18719804

Souza, Marco Antônio Andrade de; Barbosa, Verônica Santos; Wanderlei, Tereza Neuma Guedes; Barbosa, Constança Simões

2008-01-01

161

Cross-Reactive Immunity to Mycobacterium tuberculosis DosR Regulon-Encoded Antigens in Individuals Infected with Environmental, Nontuberculous Mycobacteria? †  

PubMed Central

Mycobacterium tuberculosis DosR regulon-encoded antigens are highly immunogenic in M. tuberculosis-infected humans and are associated with latent tuberculosis infection. We have investigated the hypothesis that infection with or exposure to nontuberculous mycobacteria (NTM) can induce cross-reactive immunity to M. tuberculosis DosR regulon-encoded antigens since responsiveness has been observed in non-M. tuberculosis-exposed but purified protein derivative-responsive individuals. M. tuberculosis DosR regulon-encoded antigen-specific T-cell responses were studied in peripheral blood mononuclear cells (PBMCs) of NTM-infected/exposed individuals. BLASTP was used to determine the presence of M. tuberculosis DosR regulon-encoded protein orthologs among environmental mycobacteria and nonmycobacteria. Significant gamma interferon production was observed in PBMCs from NTM-infected/exposed individuals in response to M. tuberculosis DosR regulon-encoded antigens. DosR regulon-encoded protein orthologs were prominently present in tuberculous and environmental mycobacteria and surprisingly also in nonmycobacteria. The ubiquitous presence of the highly conserved DosR master regulator protein Rv3133c suggests that this is a general adaptive bacterial response regulator. We report a first series of M. tuberculosis antigens to which cross-reactive immunity is induced by NTM infection/exposure. The high conservation of M. tuberculosis DosR regulon-encoded antigens most likely enables them to induce cross-reactive T-cell responses. PMID:19737909

Lin, May Young; Reddy, T. B. K.; Arend, Sandra M.; Friggen, Annemieke H.; Franken, Kees L. M. C.; van Meijgaarden, Krista E.; Verduyn, Marleen J. C.; Schoolnik, Gary K.; Klein, Michel R.; Ottenhoff, Tom H. M.

2009-01-01

162

A Bayesian Change point model for differential gene expression patterns of the DosR regulon of Mycobacterium tuberculosis  

PubMed Central

Background Low oxygen availability has been shown previously to stimulate M. tuberculosis to establish non-replicative persistence in vitro. The two component sensor/regulator dosRS is a major mediator in the transcriptional response of M. tuberculosis to hypoxia and controls a regulon of approximately 50 genes that are induced under this condition. The aim of this study was to determine whether the induction of the entire DosR regulon is triggered as a synchronous event or if induction can unfold as a cascade of events as the differential expression of subsets of genes is stimulated by different oxygen availabilities. Results A novel aspect of our work is the use of chemostat cultures of M. tuberculosis which allowed us to control environmental conditions very tightly. We exposed M. tuberculosis to a sudden drop in oxygen availability in chemostat culture and studied the transcriptional response of the organism during the transition from a high oxygen level (10% dissolved oxygen tension or DOT) to a low oxygen level (0.2% DOT) using DNA microarrays. We developed a Bayesian change point analysis method that enabled us to detect subtle shifts in the timing of gene induction. It results in probabilities of a change in gene expression at certain time points. A computational analysis of potential binding sites upstream of the DosR-controlled genes shows how the transcriptional responses of these genes are influenced by the affinity of these binding sites to DosR. Our study also indicates that a subgroup of DosR-controlled genes is regulated indirectly. Conclusion The majority of the dosR-dependent genes were up-regulated at 0.2% DOT, which confirms previous findings that these genes are triggered by hypoxic environments. However, our change point analysis also highlights genes which were up-regulated earlier at levels of about 8% DOT indicating that they respond to small fluctuations in oxygen availability. Our analysis shows that there are pairs of divergent genes where one gene in the pair is up-regulated before the other, presumably for a flexible response to a constantly changing environment in the host. PMID:18294384

Zhang, Yi; Hatch, Kim A; Wernisch, Lorenz; Bacon, Joanna

2008-01-01

163

A comparative resonance Raman analysis of heme-binding PAS domains: heme iron coordination structures of the BjFixL, AxPDEA1, EcDos, and MtDos proteins.  

PubMed

The heme-PAS is a specialized domain with which a broad class of signal-transducing heme proteins detect physiological heme ligands. Such domains exhibit a wide range of ligand binding parameters, yet they are all expected to feature an alpha-beta heme binding fold and a predominantly hydrophobic heme distal pocket without a distal histidine. We have compared, for the first time, the resonance Raman spectra of several heme-PASs: the heme-binding domains of Bradyrhizobium japonicum FixL, Escherichia coli Dos, Acetobacter xylinum PDEA1, and Methanobacterium thermoautotrophicum Dos. In all cases, the nu(Fe)-(CO) and nu(C-O) values of the carbonmonoxy forms were consistent with coordination of the heme iron to histidine on the proximal side and binding of the CO without electrostatic interaction with the heme distal pocket. EcDos was unusual in having predominantly hexacoordinate heme iron in the deoxy and met forms. Despite an evident lack of CO interaction with the EcDos heme pocket, relatively low Fe-O(2) (562 cm(-1)) and N-O (1576 cm(-1)) stretching frequencies indicated that strong polar interactions with that heme distal pocket are possible for highly bent ligands such as O(2) or NO. None of the newly studied NO adducts exhibited evidence of the Fe-His rupture and pentacoordination previously noted for Sinorhizobium meliloti FixL. A low Fe-His stretching frequency, formerly interpreted as a strained Fe-His bond, and the slow association of O(2) with S. meliloti FixL failed to correlate with the newly studied proteins having low association rate or low equilibrium association constants for binding of O(2). We conclude that although heme-PASs share some features, they represent distinct signal transduction mechanisms. PMID:11939776

Tomita, Takeshi; Gonzalez, Gonzalo; Chang, Alan L; Ikeda-Saito, Masao; Gilles-Gonzalez, Marie-Alda

2002-04-16

164

Católicos, fidelidade conjugal e AIDS: entre a cruz da doutrina moral e as espadas do cotidiano sexual dos adeptos1  

PubMed Central

Neste artigo discutimos a visão da Igreja Católica sobre sexualidade na interface com a epidemia do HIV/AIDS. Nossa reflexão está embasada em pesquisa etnográfica que envolveu dois meses de observação participante do cotidiano de católicos de um bairro popular da Região Metropolitana do Recife, além de contar com entrevistas a onze dos leigos engajados nos serviços religiosos da igreja do bairro e a oito sacerdotes que realizam seus trabalhos religiosos em outras localidades. Nelas abordamos diferentes temáticas relacionadas ao enfrentamento da epidemia da AIDS. Nesse contexto, conjugalidade e fidelidade se afiguram como importantes analisadores de como aqueles lidam com a epidemia, em uma variedade de re-descrições práticas e de re-interpretações conceptuais das assertivas do discurso moral religioso – ainda que, muitos impasses permaneçam em aberto em termos das prerrogativas da Igreja e seus possíveis rebatimentos na saúde sexual dos adeptos. PMID:21765650

Rios, Luis Felipe; de Aquino, Francisca Luciana; Muñoz-Laboy, Miguel; Oliveira, Cinthia; Parker, Richard

2009-01-01

165

Exact DOS in the T-Matrix approximation: Demonstration of a robust pseudogap in the 3D Attractive Hubbard Model  

NASA Astrophysics Data System (ADS)

We have analyzed the 3D attractive Hubbard model (AHM) in the non self-consistent T-matrix approximation. We present a technique that allows for us to determine, exactly, the single-particle density of states (DOS) at all temperatures above the superconducting temperature, in the T-matrix approximation. Since this approximation scheme should be accurate, for weak to intermediate coupling and at low electronic densities, these results should be representative of a 3D superconductor in which the pairing results from purely electronic interactions. The DOS that we find shows clear evidence of a pseudogap well above Tc whose energy does not change with temperature. These results are very similar to the large body of work that has been completed analyzing 2D models, and suggests that perhaps the low dimensionality of the CuO2 planes is not necessary to produce such a phenomenon.

Gooding, Rj; Marsiglio, F.; Verga, S.; Beach, Ksd

2004-03-01

166

Diverted organic synthesis (DOS): accessing a new, natural product inspired, neurotrophically active scaffold through an intramolecular Pauson-Khand reaction.  

PubMed

Drawing inspiration from the impressive neurotrophic activity exhibited by the natural product paecilomycine A, we have designed a new natural product-like scaffold employing an intramolecular Pauson-Khand reaction. Several compounds based on the new designer scaffold exhibited promising neurotrophic activity and are worthy of further biological evaluation. Our findings also highlight the importance of a DOS strategy in creating useful therapeutical leads. PMID:22832868

Mehta, Goverdhan; Samineni, Ramesh; Srihari, Pabbaraja; Reddy, R Gajendra; Chakravarty, Sumana

2012-09-14

167

Nome do aluno(a) Curso do aluno Cidade/Estado Douglas Anderson dos Santos Filosofia So Paulo/SP  

E-print Network

Engenharia de Software São Paulo/SP Thiago Oliveira Carvalho Quimica São Pedro/SP Rayssa Bruzaca de Andrade Fisica São Paulo/SP Riane Ribeiro Carvalho Quimica São Paulo/SP Caroline Luchtenberg Ribeiro Quimica São Pereira dos Santos Quimica São Paulo/SP Paula Marcelly Alves Machado Quimica São Paulo/SP Rosylane Elaine

Lucero, Jorge Carlos

168

A influência das características dos solos na remediação de solos contaminados através de processos oxidativos avançados com persulfato e reagente de fenton.  

E-print Network

??As técnicas de remediação para solos contaminados como os processos de oxidação avançados ïn situv?isam essencialmente a mineralização dos contaminantes, reduzindo-os, em última instância, a… (more)

Carlos Paulino Mendez Rodriguez

2006-01-01

169

Rare earth elements in Angra dos Reis and Lewis Cliff 86010, two meteorites with similar but distinct magma evolutions  

NASA Technical Reports Server (NTRS)

Data are presented on ion microprobe measurements of REE and selected trace element abundances in individual grains of merrillite, fassaite, olivine, kirschsteinite, and plagioclase of Lewis Cliff 86010 (LEW 86010) meteorite and in merrillite and fassaite grains of Angra dos Reis (ADOR). Results show a close relationship between the two meteorites and support a magmatic origin for LEW 86010. However, the measurements indicate that, despite numerous common characteristics, the two meteorites must have been produced in separate magmatic events involving similar but distinct processes and parent melts.

Crozaz, Ghislaine; Mckay, Gordon

1990-01-01

170

A Novel Nuclear-Localized CCCH-Type Zinc Finger Protein, OsDOS, Is Involved in Delaying Leaf Senescence in Rice1[W  

PubMed Central

Leaf senescence is a developmentally programmed degeneration process, which is fine tuned by a complex regulatory network for plant fitness. However, molecular regulation of leaf senescence is poorly understood, especially in rice (Oryza sativa), an important staple crop for more than half of the world population. Here, we report a novel nuclear-localized CCCH-type zinc finger protein, Oryza sativa delay of the onset of senescence (OsDOS), involved in delaying leaf senescence in rice. The expression of OsDOS was down-regulated during natural leaf senescence, panicle development, and pollination, although its transcripts were accumulated in various organs. RNAi knockdown of OsDOS caused an accelerated age-dependent leaf senescence, whereas its overexpression produced a marked delay of leaf senescence, suggesting that it acts as a negative regulator for leaf senescence. A genome-wide expression analysis further confirmed its negative regulation for leaf senescence and revealed that, in particular, the jasmonate (JA) pathway was found to be hyperactive in the OsDOS RNAi transgenic lines but impaired in the OsDOS overexpressing transgenic lines, indicating that this pathway is likely involved in the OsDOS-mediated delaying of leaf senescence. Furthermore, methyl JA treatments of both seeds and detached leaves from the RNAi and the overexpressing transgenic lines showed hyper- and hyporesponses, respectively, consistent with the negative regulation of the JA pathway by OsDOS. Together, these results indicate that OsDOS is a novel nuclear protein that delays leaf senescence likely, at least in part, by integrating developmental cues to the JA pathway. PMID:16778011

Kong, Zhaosheng; Li, Meina; Yang, Wenqiang; Xu, Wenying; Xue, Yongbiao

2006-01-01

171

On the effectiveness of route-based packet filtering for distributed DoS attack prevention in power-law internets  

Microsoft Academic Search

Denial of service (DoS) attack on the Internet has become a pressing problem. In this paper, we describe and evaluate route-based distributed packet filtering (DPF), a novel approach to distributed DoS (DDoS) attack prevention. We show that DPF achieves proactiveness and scalability, and we show that there is an intimate relationship between the effectiveness of DPF at mitigating DDoS attack

Heejo Lee

2001-01-01

172

Factores socio-económicos asociados a la percepción de situación socioeconómica entre adultos mayores de dos países latinoamericanos  

PubMed Central

El objetivo principal del artículo es estudiar la asociación entre la percepción subjetiva sobre la situación económica propia y una serie de medidas objetivas de bienestar socioeconómico –fuentes de ingresos, tenencia de vivienda, nivel educativo y transferencias familiares informales de dinero- entre adultos mayores de dos países Latinoamericanos: México y Costa Rica. Los datos se obtienen de las primeras rondas de dos encuestas sobre envejecimiento: CRELES para Costa Rica y ENASEM para México. La variable dependiente más importante se obtiene de las respuestas a las pregunta “¿Cómo califica su situación económica actual?” en Costa Rica y “¿Diría usted que su situación económica es…?” en México. Para ambas encuestas, las respuestas se codificaron en forma binaria; el código 0 representa las categorías Excelente, Muy buena y Buena, y el código 1 representa a las categorías Regular y Mala. Se encontró que el ingreso por jubilación es un importante determinante de la percepción de bienestar en ambos países. En Costa Rica, el ingreso del cónyuge y la tenencia de vivienda son importantes predictores de la percepción de bienestar, mientras que en México, los ingresos por transferencias están fuertemente asociados con dicha percepción. PMID:25360057

Brenes-Camacho, Gilbert

2014-01-01

173

Supporting Security against SYN Flooding Attack in Distributed DoS Via Measuring IPFIX-Based Traffic  

NASA Astrophysics Data System (ADS)

Distributed denial-of-service attacks on public servers after 2000 have become a serious problem. In the distributed denial-of-service (DDoS) attacks often seen recently, multiple distributed nodes concurrently attack a single server. To assure that network services will not be interrupted, faster and more effective defense mechanisms is needed to protect against malicious traffic, especially SYN floods. One problem in detecting SYN flood traffic is that server nodes or firewalls cannot distinguish the SYN packets of normal TCP connections from those of a SYN flood attack. Our method, FDFIX, relies on the use of monitoring and measurement techniques to evaluate the impact of DoS attacks. It uses flow based measurements. Capturing flow information is very important for detecting DoS and also other kinds of attacks. Flow monitoring allows detecting suspicious traffics and in the next step can analyze attacking flows and the results can be used for defense methods. Our method provides required information for many mechanisms that use traffic measurement as their input.

Alipour, H.; Kia, M. Kashefi; Esmaeili, M.

174

Assessment of human health risk from organochlorine pesticide residues in Cidade dos Meninos, Duque de Caxias, Rio de Janeiro, Brazil.  

PubMed

This article presents the results of a heath risk assessment in Cidade dos Meninos, an area contaminated with organochlorine pesticide residues located in the county (municipality) of Duque de Caxias, Rio de Janeiro State, Brazil. The Agency for Toxic Substances and Disease Registry (ATSDR) risk assessment methodology was applied. The following organochlorine compounds exceeded the established limits and were considered target pollutants: HCH and its isomers (in eggs, milk, and soil); DDT and its metabolites; trichlorobenzenes; trichlorophenols; dioxins and furans (eggs and soil). For all the substances studied (with the exception of trichlorophenols), the estimated doses exceeded the minimum risk levels for chronically exposed children and adults. According to the ATSDR classification, the area was considered an "urgent public health hazard" because of its high and serious exposure to substances that are dangerous to human health. PMID:18392352

Asmus, Carmen Ildes R Fróes; Alonzo, Herling Gregorio Aguilar; Palácios, Marisa; Silva, Alexandre Pessoa da; Freitas Filhote, Maria Isabel de; Buosi, Daniela; Câmara, Volney de Magalhães

2008-04-01

175

Seismogenic sources and crustal structure near the seismological station of Angra dos Reis (ESAR), southeastern region of Brazil  

NASA Astrophysics Data System (ADS)

The seismological station of Angra dos Reis (ESAR) is operating since the end of year 2000 located near to the nuclear power plants of Angra dos Reis, in the southern portion of Rio de Janeiro state, southeastern Brazil. The main objective of ESAR is defining the level of seismic activity in the area where those plants are installed, using data from a broadband seismograph that operates in a 100 cps continuous format. Epicentral determination of local seismic events is done through the back azimuth calculated with the P wave amplitude in the three component seismograms, and epicentral distance induced from the S-P time difference. Crustal structure for relating the S-P time and epicentral distance was obtained through a seismic refraction experiment using controlled sources, complemented with a detailed study of crustal structure beneath ESAR using teleseimic data and the receiver function method processed in the time domain. Since the beginning of operation ESAR has detected many local and near regional seismic events with magnitude lower than mb 4.0, most of them below mb 2.0, and not included in the Brazilian Seismic Catalogue. Epicenters of those events are spread in both oceanic and continental areas, in some cases forming clusters of different size, some of them, especially those located in the continent could belong to explosions made in stone-quarry, whereas, clusters and isolated epicenters located in the oceanic area could belong to natural earthquakes. Two of these oceanic clusters, located in the continental platform, may belong to seismogenic sources that are active near ESAR, and need further study to define its nature.

Romero, T.; Berrocal, J.; Fernandes, C.; de Lima, M. V.; Dos Reis, E.

2007-05-01

176

Identificabilidade e estabilidade dos parâmetros no método Grade of Membership (GoM): considerações metodológicas e práticas  

PubMed Central

O método Grade of Membership (GoM) tem sido cada vez mais utilizado por demógrafos brasileiros e tem a vantagem de possuir um parâmetro que mensura a heterogeneidade individual, com base nas correlações não-observáveis entre as categorias de resposta das variáveis de interesse, gerando um medida do grau de pertencimento de cada indivíduo a perfis extremos. Alguns autores, contudo, chamam atenção para questões importantes na calibragem dos modelos finais que utilizam o programa GoM versão 3.4, como o problema de identificabilidade – soluções múltiplas para parâmetros estimados. Neste artigo, é sugerido um procedimento capaz de identificar um modelo final com solução única que descreva os tipos puros mais fidedignos à base de dados, em uma tentativa de otimização. Para ilustrar esse processo, utilizou-se uma base de dados correspondente a um levantamento econômico e sociodemográfico de uma população de pequenos agricultores residentes ao longo da Rodovia Transamazônica, no Estado do Pará. Também identificou-se a existência de instabilidade nos parâmetros estimados pelo programa GoM 3.4, sendo proposto um método de estabilização de seus valores. Com esses procedimentos combinados, os usuários do programa GoM 3.4 poderão descrever sua base de dados de forma mais adequada e responder às críticas sobre questões de identificabilidade e estabilidade dos modelos resultantes. Essas soluções empíricas são relevantes por afetarem cálculos de prevalência e de incidência de eventos de interesse, além de trazerem consequências importantes sobre o ponto e o momento corretos para intervenções de políticas públicas ou de planejamento prospectivo em análises de projeção. PMID:21709732

Guedes, Gilvan Ramalho; Caetano, André Junqueira; Machado, Carla Jorge; Brondízio, Eduardo Sonewend

2011-01-01

177

77 FR 65144 - Airworthiness Directives; Embraer S.A. Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732...Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732;...

2012-10-25

178

78 FR 67018 - Airworthiness Directives; Embraer S.A. Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Putim, CEP: 12227-901, Sao Jose dos Campos, Sao Paulo, Brasil; phone: (+55 12) 3927-1000; Fax: (+55 12) 3927-6600...Putim, CEP: 12227-901, Sao Jose dos Campos, Sao Paulo, Brasil; phone: (+55 12) 3927-1000; Fax: (+55 12)...

2013-11-08

179

78 FR 66258 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732...Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732;...

2013-11-05

180

76 FR 444 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-500 Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...dos Campos--SP, CEP: 12227-901--PO Box: 38/2, BRASIL, telephone: ++55 12 3927-5383; fax: ++55 12 3927-2610...dos Campos--SP, CEP: 12227-901--PO Box: 38/2, BRASIL, telephone: ++55 12 3927-5383; fax: ++55 12...

2011-01-05

181

77 FR 63272 - Airworthiness Directives; Embraer S.A. Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Putim-12227-901 S[atilde]o Jose dos Campos-SP-- BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732...2170-Putim-12227-901 S[atilde]o Jose dos Campos-SP-BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732;...

2012-10-16

182

Un estudio de los Institutos Nacionales de la Salud indica que dos dosis de vacuna contra los VPH pueden proteger tanto como el tratamiento completo  

Cancer.gov

Dos dosis de Cervarix, la vacuna contra virus del papiloma humano (VPH), fueron tan efectivas como la pauta normal actual de tres dosis después de cuatro años de seguimiento. El estudio de vacuna en Costa Rica, patrocinado por el NCI, fue diseñado para evaluar la eficacia de Cervarix en una población determinada.

183

Métodos de coleta de fezes e determinação dos coeficientes de digestibilidade da fração protéica e da energia de alimentos para o pacu, Piaractus mesopotamicus (Holmberg, 1887)  

Microsoft Academic Search

RESUMO - Para melhorar a alimentação do pacu (Piaracatus mesopotamicus), é necessário conhecer o nível de aproveitamento dos ingredientes utilizados em suas dietas. Neste trabalho, inicialmente, foram analisados quatro métodos de coleta de fezes, em função da precisão e da versatilidade (dissecação, extrusão, Guelph e Guelph modificado), e o tempo entre as coletas de fezes nos sistemas de Guelph, por

Eduardo Gianini Abimorad; Dalton José Carneiro

2004-01-01

184

Effects of Unintentional Denial of Service (DOS) Due to Push-to-Talk (PTT) Delays on Performance of CSMA\\/CA Based Adhoc Land Mobile Radio (LMR) Networks  

Microsoft Academic Search

Unintentional Denial of Service (DOS) problems occur in wireless networks such as Wi-Fi due to factors such as signal capture, interference and have been studied extensively in the literature. A similar problem manifests amongst nodes within a LMR network due to different PTT delay characteristics. We first present the typical PTT delay values and distributions followed by an analytical model

Abhijit C. Navalekar; William R. Michalson

2010-01-01

185

Bactérias da família Enterobacteriaceae em Alphitobius diaperinus oriundos de granjas avícolas dos Estados do Rio Grande do Sul e Santa Catarina, Brasil  

Microsoft Academic Search

O cascudinho (Alphitobius diaperinus) é um inseto considerado como uma das maiores pragas da indústria avícola no Brasil e em diversos países no mundo. A presença dele nos aviários gera diversos transtornos, pois sua ingestão pelas aves, prejudica o ganho de peso e também podem albergar e disseminar entre as aves diversos patógenos. Coletaram-se cascudinhos em seis empresas avícolas dos

Stefanie Dickel Segabinazi; Maristela Lovato Flôres; Aléverson da Silva Barcelos; Gislaine Jacobsen; Rosângela Dariva Eltz

186

Mycobacterium tuberculosis DosR is required for activity of the PmbtB and PmbtI promoters under hypoxia.  

PubMed

Mycobacterium tuberculosis has the ability to survive for extended periods of time under conditions of low oxygen, low pH, low iron and low nutrients. The mycobactins (M. tuberculosis siderophores) play a key role in scavenging iron from the environment and are induced in response to low iron in an IdeR-regulated manner. We demonstrate that the promoters of two mycobactin gene (mbt) operons are also expressed during adaptation to low oxygen, and that this expression is dependent on the DosR regulator. Up-regulation of mbt operons induced by low iron was not DosR-dependent. DosR is a member of a two component regulatory system which responds to oxygen availability. Deletion of the DosR regulator led to increased expression of bacterioferritin and increased capacity to grow under iron depletion. These data provide a link between the mycobacterial response to two conditions likely to be encountered in vivo, low iron and low oxygen. PMID:25211224

Schreuder, Lise J; Parish, Tanya

2014-01-01

187

A new species of Rock-Dwelling Scinax Wagler (Anura: Hylidae) from Chapada dos Veadeiros, Central Brazil.  

PubMed

A new species of the Scinax ruber clade is described from Chapada dos Veadeiros region, Central Brazil. The new species is diagnosed by having SVL 21.9-27.7 mm in males and 26.7-31.7 mm in females; snout acuminate in dorsal view and rounded in profile; medium-sized tympanum; vocal sac single, median, subgular, that does not reach the pectoral region; iris iridescent yellow, with some thin, darker reticulations; tadpoles with ventral oral disc; P-3 regular and unmodified as a labial arm; absence of keratinized and colored plates on the sides of the lower jaw-sheath; presence of a keratinized and colored spur on each side behind the lower jaw-sheath; dorsolateral eyes, ventrally invisible; and advertisement call composed of 8-14 notes each with 4-18 pulses, and duration of 290-420 ms. The new species uses temporary creeks in rock meadows above 1.000 m a.s.l. and males calls from rock outcrops. The dorsal color pattern enables this species to camouflage in this kind of surfaces.  PMID:25662110

Araujo-Vieira, Katyuscia; Brandão, Reuber Albuquerque; Faria, Daniele Carvalho Do Carmo

2015-01-01

188

Activation of ATP Binding for the Autophosphorylation of DosS, a Mycobacterium tuberculosis Histidine Kinase Lacking an ATP Lid Motif*  

PubMed Central

The sensor histidine kinases of Mycobacterium tuberculosis, DosS and DosT, are responsible for sensing hypoxic conditions and consist of sensor and kinase cores responsible for accepting signals and phosphorylation activity, respectively. The kinase core contains a dimerization and histidine phosphate-accepting (DHp) domain and an ATP binding domain (ABD). The 13 histidine kinase genes of M. tuberculosis can be grouped based on the presence or absence of the ATP lid motif and F box (elements known to play roles in ATP binding) in their ABDs; DosS and DosT have ABDs lacking both these elements, and the crystal structures of their ABDs indicated that they were unsuitable for ATP binding, as a short loop covers the putative ATP binding site. Although the ABD alone cannot bind ATP, the kinase core is functional in autophosphorylation. Appropriate spatial arrangement of the ABD and DHp domain within the kinase core is required for both autophosphorylation and ATP binding. An ionic interaction between Arg440 in the DHp domain and Glu537 in the short loop of the ABD is available and may open the ATP binding site, by repositioning the short loop away from the site. Mutations at Arg440 and Glu537 reduce autophosphorylation activity. Unlike other histidine kinases containing an ATP lid, which protects bound ATP, DosS is unable to accept ATP until the ABD is properly positioned relative to the histidine; this may prevent unexpected ATP reactions. ATP binding can, therefore, function as a control mechanism for histidine kinase activity. PMID:23486471

Cho, Ha Yeon; Lee, Young-Hoon; Bae, Young-Seuk; Kim, Eungbin; Kang, Beom Sik

2013-01-01

189

MprA and DosR Coregulate a Mycobacterium tuberculosis Virulence Operon Encoding Rv1813c and Rv1812c  

PubMed Central

Mycobacterium tuberculosis remains a significant global pathogen, causing extensive morbidity and mortality worldwide. This bacterium persists within granulomatous lesions in a poorly characterized, nonreplicating state. The two-component signal transduction systems MprAB and DosRS-DosT (DevRS-Rv2027c) are responsive to conditions likely to be present within granulomatous lesions and mediate aspects of M. tuberculosis persistence in vitro and in vivo. Here, we describe a previously uncharacterized locus, Rv1813c-Rv1812c, that is coregulated by both MprA and DosR. We demonstrate that MprA and DosR bind to adjacent and overlapping sequences within the promoter region of Rv1813c and direct transcription from an initiation site located several hundred base pairs upstream of the Rv1813 translation start site. We further show that Rv1813c and Rv1812c are cotranscribed, and that the genomic organization of this operon is specific to M. tuberculosis and Mycobacterium bovis. Although Rv1813c is not required for survival of M. tuberculosis in vitro, including under conditions in which MprAB and DosRST signaling are activated, an M. tuberculosis ?Rv1813c mutant is attenuated in the low-dose aerosol model of murine tuberculosis, where it exhibits a lower bacterial burden, delayed time to death, and decreased ability to stimulate proinflammatory cytokines interleukin-1? (IL-1?) and IL-12. Interestingly, overcomplementation of these phenotypes is observed in the M. tuberculosis ?Rv1813c mutant expressing both Rv1813c and Rv1812c, but not Rv1813c alone, in trans. Therefore, Rv1813c and Rv1812c may represent general stress-responsive elements that are necessary for aspects of M. tuberculosis virulence and the host immune response to infection. PMID:22689819

Bretl, Daniel J.; He, Hongjun; Demetriadou, Crystalla; White, Mark J.; Penoske, Renee M.; Salzman, Nita H.

2012-01-01

190

Essentiality of DevR/DosR Interaction with SigA for the Dormancy Survival Program in Mycobacterium tuberculosis  

PubMed Central

The DevR/DosR regulator is believed to play a key role in dormancy adaptation mechanisms of Mycobacterium tuberculosis in response to a multitude of gaseous stresses, including hypoxia, which prevails within granulomas. DevR activates transcription by binding to target promoters containing a minimum of two binding sites. The proximal site overlaps with the SigA ?35 element, suggesting that DevR-SigA interaction is required for activating transcription. We evaluated the roles of 14 charged residues of DevR in transcriptional activation under hypoxic stress. Seven of the 14 alanine substitution mutants were defective in regulon activation, of which K191A, R197A, and K179A+K168A (designated K179A*) mutants were significantly or completely compromised in DNA binding. Four mutants, namely, E154A, R155A, E178A, and K208A, were activation defective in spite of binding to DNA and were classified as positive-control (pc) mutants. The SigA interaction defect of the E154A and E178A proteins was established by in vitro and in vivo assays and implies that these substitutions lead to an activation defect because they disrupt an interaction(s) with SigA. The relevance of DevR interaction to the transcriptional machinery was further established by the hypoxia survival phenotype displayed by SigA interaction-defective mutants. Our findings demonstrate the role of DevR-SigA interaction in the activation mechanism and in bacterial survival under hypoxia and establish the housekeeping sigma factor SigA as a molecular target of DevR. The interaction of DevR and RNA polymerase suggests a new and novel interceptable molecular interface for future antidormancy strategies for Mycobacterium tuberculosis. PMID:24317401

Gautam, Uma S.; Sikri, Kriti; Vashist, Atul; Singh, Varshneya

2014-01-01

191

Análise das Atribuições Causais do Sucesso e do Insucesso na Competição, em Função do Nível Competitivo dos Futebolistas Portugueses Analysis of Causal Attributions of Success and Failure in Competitions Regarding Portuguese Soccer Players' Competition Level  

Microsoft Academic Search

Resumo Tendo como referência o modelo atribuicional da motivação e emoção de Weiner (1979), pretendeu-se avaliar as atribuições causais, em situações de sucesso e insucesso desportivo, em função da influência dos diferentes níveis competitivos dos futebolistas portugueses. Analisando uma amostra que integrou 125 futebolistas, que participaram em três níveis competitivos do futebol português (II Divisão; III Divisão; I Divisão Distrital),

Paulo Malico Sous; António Boleto Rosado; Túlia Maia Cabrita

192

Clave de campo para los murciélagos de Costa Rica  

E-print Network

Costa Rica has an extremely diverse bat fauna with 109 species recorded from the country to date. The diversity of bats at a given locality can be high with 71 species known from the La Selva Biological Station in the Caribbean lowlands. Timm and La...

Timm, Robert M.; LaVal, Richard K.; Rodrí guez-Herrera, Bernal

2000-01-01

193

Offshore Heavy Oil in Campos Basin: The Petrobras Experience  

Microsoft Academic Search

This paper was selected for presentation by an OTC Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the Offshore Technology Conference and are subject to correction by the author(s). The material, as presented, does not necessarily reflect any position of the Offshore Technology

A. C. Capeleiro Pinto; C. C. M. Branco; J. S. de Matos; P. M. Vieira; S. da Silva Guedes; C. Pedroso Jr; A. C. Decnop Coelho; M. M. Ceciliano

2003-01-01

194

Effects of Unintentional Denial of Service (DOS) Due to Push-to-Talk (PTT) Delays on Performance of CSMA/CA Based Adhoc Land Mobile Radio (LMR) Networks  

NASA Astrophysics Data System (ADS)

Unintentional Denial of Service (DOS) problems occur in wireless networks such as Wi-Fi due to factors such as signal capture, interference and have been studied extensively in the literature. A similar problem manifests amongst nodes within a LMR network due to different PTT delay characteristics. We first present the typical PTT delay values and distributions followed by an analytical model to estimate the denial of service problem. The results obtained using the model and simulations show that the LMR nodes experience DOS due to collisions resulting from PTT delays. The results also show that there exists an asymmetry in the performance of individual nodes and the extent of this asymmetry is a function of total number of nodes in the system and the density of nodes with similar PTT delay profiles. These observations have implications in both performance and capacity planning of an adhoc LMR network.

Navalekar, Abhijit C.; Michalson, William R.

195

Using Mobile Agents to Detect and Recover from Node Compromise in Path-based DoS Attacks in Wireless Sensor Networks  

Microsoft Academic Search

Wireless sensor networks represent a new generation of real-time embedded systems with significantly different communication constraints from the traditional networked systems. With their development, a new attack called a path- based DoS (PDoS) attack has appeared. In a PDoS attack, an adversary, either inside or outside the network, overwhelms sensor nodes by flooding a multi-hop end-to- end communication path with

Bai Li; Lynn Batten

2007-01-01

196

CONVOCAO DOS CANDIDATOS CLASSIFICADOS PARA A PROVA ORAL DE DEFESA DE MEMORIAL DO CONCURSO PBLICO PARA PROVIMENTO DE VAGAS EM CARGOS DE ASSISTENTE DE  

E-print Network

FRASSONI DOS SANTOS DE MATTOS 15:40hs 1306 JORGE LUIS GOMES 16:45hs CÃ?DIGO: PQ03 CARGO/CLASSE: Assistente:30hs 04/06/2014 1219 GLAUSTON ROBERTO TEIXEIRA DE LIMA 9:35hs 1033 JOÃ?O GERD ZELL DE MATTOS 10:40hs 9:35hs 1404 ENRIQUE VIEIRA MATTOS 10:40hs 1076 THIAGO SOUZA BISCARO 13:30hs 1240 JOJHY SAKURAGI 14

197

Effects of Unintentional Denial of Service (DOS) Due to Push-to-Talk (PTT) Delays on Performance of CSMA\\/CA Based Adhoc Land Mobile Radio (LMR) Networks  

Microsoft Academic Search

\\u000a Unintentional Denial of Service (DOS) problems occur in wireless networks such as Wi-Fi due to factors such as signal capture,\\u000a interference and have been studied extensively in the literature. A similar problem manifests amongst nodes within a LMR network\\u000a due to different PTT delay characteristics. We first present the typical PTT delay values and distributions followed by an\\u000a analytical model

Abhijit C. Navalekar; William R. Michalson

2009-01-01

198

Appropriate DevR (DosR)-Mediated Signaling Determines Transcriptional Response, Hypoxic Viability and Virulence of Mycobacterium tuberculosis  

PubMed Central

Background The DevR(DosR) regulon is implicated in hypoxic adaptation and virulence of Mycobacterium tuberculosis. The present study was designed to decipher the impact of perturbation in DevR-mediated signaling on these properties. Methodology/Principal Findings M. tb complemented (Comp) strains expressing different levels of DevR were constructed in Mut1* background (expressing DevR N-terminal domain in fusion with AphI (DevRN-Kan) and in Mut2?devR background (deletion mutant). They were compared for their hypoxia adaptation and virulence properties. Diverse phenotypes were noted; basal level expression (?5.3±2.3 µM) when induced to levels equivalent to WT levels (?25.8±9.3 µM) was associated with robust DevR regulon induction and hypoxic adaptation (Comp 9* and 10*), whereas low-level expression (detectable at transcript level) as in Comp 11* and Comp15 was associated with an adaptation defect. Intermediate-level expression (?3.3±1.2 µM) partially restored hypoxic adaptation functions in Comp2, but not in Comp1* bacteria that co-expressed DevRN-Kan. Comp* strains in Mut1* background also exhibited diverse virulence phenotypes; high/very low-level DevR expression was associated with virulence whereas intermediate-level expression was associated with low virulence. Transcription profiling and gene expression analysis revealed up-regulation of the phosphate starvation response (PSR) in Mut1* and Comp11* bacteria, but not in WT/Mut2?devR/other Comp strains, indicating a plasticity in expression pathways that is determined by the magnitude of signaling perturbation through DevRN-Kan. Conclusions/Significance A minimum DevR concentration of ?3.3±1.2 µM (as in Comp2 bacteria) is required to support HspX expression in the standing culture hypoxia model. The relative intracellular concentrations of DevR and DevRN-Kan appear to be critical for determining dormancy regulon induction, hypoxic adaptation and virulence. Dysregulated DevRN-Kan-mediated signaling selectively triggers the PSR in bacteria expressing no/very low level of DevR. Our findings illustrate the important role of appropriate two-component- mediated signaling in pathogen physiology and the resilience of bacteria when such signaling is perturbed. PMID:22563409

De Majumdar, Shyamasree; Vashist, Atul; Dhingra, Sakshi; Gupta, Rajesh; Singh, Alka; Challu, Vijay K.; Ramanathan, V. D.; Kumar, Prahlad; Tyagi, Jaya Sivaswami

2012-01-01

199

Geochemistry and petrogenesis of the Mesoarchean granites from the Canaã dos Carajás area, Carajás Province, Brazil: Implications for the origin of Archean granites  

NASA Astrophysics Data System (ADS)

Four Mesoarchean (2.93 to 2.83 Ga) granite units, which encompass the Canaã dos Carajás, Bom Jesus, Cruzadão and Serra Dourada granites, were recognized in the Canaã dos Carajás area of the Archean Carajás Province. The Mesoarchean units are composed dominantly of biotite leucomonzogranites. They are compared with the Neoarchean Planalto suite (2.73 Ga) which encompasses biotite-hornblende monzogranites to syenogranites. The Canaã dos Carajás, Bom Jesus and the variety of the Cruzadão granite with higher (La/Yb)N are geochemically more akin to the calc-alkaline granites, whereas the other varieties of the Cruzadão granite are transitional between calc-alkaline and alkaline granites. The Serra Dourada granite has an ambiguous geochemical character with some features similar to those of calc-alkaline granites and other peraluminous granites. The Planalto granites have ferroan character, are similar geochemically to reduced A-type granites and show a strong geochemical contrast with the Mesoarchean studied granites. The Mesoarchean granites described in the Canaã dos Carajás area are geochemically distinct to those of the Rio Maria domain of the Carajás Province. The Canaã dos Carajás and Bom Jesus granites are similar to the high-Ca granites, whereas the Cruzadão and Serra Dourada are more akin to the low-CaO granites of the Yilgarn craton. The geochemical characteristics of the Mesoarchean studied granites approach those of the biotite granite group of Dharwar but the latter are enriched in HFSE and HREE compared to the Canaã dos Carajás granites. The Neoarchean Planalto suite granite has no counterpart in the Mesoarchean Rio Maria domain of the Carajás Province, neither in the Yilgarn and Dharwar cratons. Geochemical modeling suggests that partial melting of a source similar in composition to an Archean basaltic andesite of the Carajás Province could give origin to the Bom Jesus and Cruzadão granites. In the case of the Bom Jesus granite the residue of melting contained, in similar proportions, plagioclase, clinopyroxene, amphibole, and garnet, with subordinate ilmenite. The variations in (La/Yb)N and Sr/Y of the Cruzadão granite are controlled by changes in the residual melting phases. Garnet and amphibole are abundant in the residue of the variety with higher (La/Yb)N, whereas in the rocks with moderate to lower (La/Yb)N garnet is absent, magnetite appears in the residue and amphibole initially increases but is replaced by orthopyroxene in the rocks with the lowest (La/Yb)N. In the Canaã dos Carajás and Serra Dourada granites garnet was probably an absent phase in the residue of melting and the influence of amphibole was also apparently limited. A crustal environment and a variable pressure from 10 to 7-8 kbar are estimated for the generation of the granite magmas. The Bom Jesus and Cruzadão granites of Carajás derived from basaltic andesite sources and not of TTG and their geochemical contrasts can be explained by variation in the pressure of melting. The sources of Archean granite magmas are more diversified and could be more mafic than generally admitted.

Feio, G. R. L.; Dall'Agnol, R.

2012-12-01

200

Osteobiographic analysis of skeleton I, Sítio Toca dos Coqueiros, Serra da Capivara National Park, Brazil, 11,060 BP: first results.  

PubMed

This paper presents an osteobiographic analysis of a single skeleton found in a small rock shelter known as Toca dos Coqueiros, Piauí, Brazil. This find is of interest because of an exceptionally old radiocarbon date associated with it. The date (11,060 BP) was obtained from charcoal associated directly with the skeleton. This is an interesting find because of the rarity of osteobiographic studies of skeletons of such antiquity. Despite the existence of two projectile points in association with the burial, the morphological and molecular analyses of the skeleton demonstrated that this was a female. She was about 35-45 years of age at death. The skeleton exhibited acute and chronic bone lesions. Oral pathology was also observed, including an interproximal dental groove, probably caused by the therapeutic use of a cactus thorn. This could be one of the oldest cases of an analgesic plant used in the prehistoric Americas. PMID:12012362

Lessa, Andrea; Guidon, Niéde

2002-06-01

201

Components of the Rv0081-Rv0088 Locus, Which Encodes a Predicted Formate Hydrogenlyase Complex, Are Coregulated by Rv0081, MprA, and DosR in Mycobacterium tuberculosis?†  

PubMed Central

Mycobacterium tuberculosis, the etiological agent of tuberculosis, remains a significant cause of morbidity and mortality throughout the world despite a vaccine and cost-effective antibiotics. The success of this organism can be attributed, in part, to its ability to adapt to potentially harmful stress within the host and establish, maintain, and reactivate from long-term persistent infection within granulomatous structures. The DosRS-DosT/DevRS-Rv2027c, and MprAB two-component signal transduction systems have previously been implicated in aspects of persistent infection by M. tuberculosis and are known to be responsive to conditions likely to be found within the granuloma. Here, we describe initial characterization of a locus (Rv0081-Rv0088) encoding components of a predicted formate hydrogenylase enzyme complex that is directly regulated by DosR/DevR and MprA, and the product of the first gene in this operon, Rv0081. In particular, we demonstrate that Rv0081 negatively regulates its own expression and that of downstream genes by binding an inverted repeat element in its upstream region. In contrast, DosR/DevR and MprA positively regulate Rv0081 expression by binding to recognition sequences that either partially or completely overlap that recognized by Rv0081, respectively. Expression of Rv0081 initiates from two promoter elements; one promoter located downstream of the DosR/DevR binding site but overlapping the sequence recognized by both Rv0081 and MprA and another promoter downstream of the DosR/DevR, Rv0081, and MprA binding sites. Interestingly, Rv0081 represses Rv0081 and downstream determinants following activation of DosRS-DosT/DevRS-Rv2027c by nitric oxide, suggesting that expression of this locus is complex and subject to multiple levels of regulation. Based on this and other published information, a model is proposed detailing Rv0081-Rv0088 expression by these transcription factors within particular growth environments. PMID:21821774

He, Hongjun; Bretl, Daniel J.; Penoske, Renee M.; Anderson, David M.; Zahrt, Thomas C.

2011-01-01

202

EFEITO DOS MÉTODOS DE COCÇÃO NA COMPOSIÇÃO CENTESIMAL E COLESTEROL DO PEITO DE FRANGOS DE DIFERENTES LINHAGENS 1 Effect of cooking methods on the chemical composition and cholesterol of the breast in different chickens strains  

Microsoft Academic Search

No presente trabalho, objetivou-se avaliar o efeito dos métodos de cocção: cozimento em água (CA), fritura em óleo de soja (FO), assado em forno convencional (FC) e assado em microondas (MO) sobre perda de peso por cocção (PPC), composição química e colesterol em peitos de frangos das linhagens Super pesadão (Sp), Carijó (Cr) e Cobb (Cb). O delineamento experimental foi

Milena Wolff Ferreira; Sibelli Passini; Barbosa Ferrão; Xisto Rodrigues de Souza

203

O CNPq disponibilizou, no dia 30/04, o novo Diretrio dos Grupos de Pesquisa no Brasil. Seu novo Portal organiza e integra as diversas ferramentas de coleta de dados, de  

E-print Network

O CNPq disponibilizou, no dia 30/04, o novo Diretório dos Grupos de Pesquisa no Brasil. Seu novo aproveitados na nova versão do DGP porque, no modelo anterior, não era requerido seu CPF. Ao atualizar ou" (CPF e Senha Lattes), onde poderá consultar, atualizar e inserir grupos de pesquisa e ler os

Maier, Rudolf Richard

204

PROPUESTA DE DOS ÍNDICES PARA LA MEDICIÓN DE LA COMPETITIVIDAD DE LOS DESTINOS DE SOL Y PLAYA DEL MEDITERRÁNEO: AVANCE DE RESULTADOS DESDE EL PUNTO DE VISTA DE LA DEMANDA 1  

Microsoft Academic Search

Este trabajo tiene como objetivo principal proponer dos instrumentos para la medición e identificación de los elementos de competitividad turística en los destinos de sol y playa del mediterráneo. Esta investigación consta de tres partes: en la primera, se analiza el concepto de competitividad aplicado al sector turístico y los diferentes intentos de medición de esta (propuestas que se apuntan

Jaume Garau Taberner

205

ANÁLISE DA INSERÇÃO DOS TEMAS DE HUMANIDADES E ÉTICA, COM METODOLOGIA DE APRENDIZAGEM BASEADA EM PROBLEMAS, EM CURRICULO MÉDICO INTEGRADO EM ESCOLA PÚBLICA NO DISTRITO FEDERAL, BRASIL  

PubMed Central

Objetivo Realizar uma análise da inserção da ética e humanidades no currículo do Curso de Medicina da Escola Superior em Ciências da Saúde - ESCS, escola pública do Distrito Federal, Brasil, de forma a contribuir com o processo de gestão curricular. Metodologia O Estudo é de coorte e documental. Foram pesquisados 37 termos relacionados à ética e 36 referentes à humanização nos objetivos educacionais e conteúdo dos módulos temáticos, habilidades e atitudes e interação ensino-serviço-comunidade, de 1a a 4a série e no programa do internato no currículo (ano 2006) e no projeto pedagógico do Curso de Medicina (2001). Resultados Maior inserção da humanização, ética e bioética na 1a e 2a série, quando comparado à inserção na 3a e 4a série e no internato, (IC95%-?=0,034, pvalue=0,007). Unidade de habilidades e atitudes: freqüência das 3 temáticas no currículo da 1a a 4a séries (IC95%-?=0,026, pvalue=0,013). Quando comparada a inserção entre o internato e as quatro primeiras séries, observa-se que nestas a inserção da temática humanização é superior (IC95%-?=0,042, pvalue=0,029). Conclusão O currículo desenvolvido no ano de 2006 na ESCS apresentou correlação com o projeto pedagógico do curso e contemplou a temática de forma abrangente, em todas as séries e internato. PMID:20396594

Novaes, Maria Rita Carvalho Garbi; Novaes, Luiz Carlos Garcez; Guilhem, Dirce; Lolas, Fernando; Silveira, Carla; Guiotti, Murilo

2009-01-01

206

Rb-Sr and Sm-Nd whole rock analyses of basalts of the Grao Para Group, Serra dos Carajas, Brazil  

SciTech Connect

The Grao Para Group at Serra dos Carajas in the Guapore Shield of Brazil is a 6 km thick sequence of bimodal metavolcanic rock with interbedded iron formations. Rhyolites are a minor part of the low grade meta-volcanic section, with the bulk consisting of subalkaline basalt, basaltic andesite, and shoshonite. Rb-Sr whole rock analyses of 7 basalts yield an age of 2687 +/- 54 Ma. This agrees well with an age of 2758 +/- 39 Ma from zircon U-Pb analyses of the interbedded rhyolites. Except for the allocthonous Imataca Complex of Venezuela, these dates for the Grao Para Group are the first well-constrained Archean ages from the Amazonian Craton. An even older age for the basement to the Grao Para Group is also implied. Sm-Nd whole-rock analyses of four of these basalts did not yield an isochron because of the limited range of /sup 147/Sm//sup 144/Nd values, but element of/sub Nd/ values relative to CHUR were calculated using the Rb-Sr age. The typical LREE-enrichment, lack of Ce depletion or spilitic alteration of alkalies, and the high Sr initial ratios, may indicate that these isotopic patterns were derived by incorporation of some older continental crust in the mafic melts. These data together with an element of/sub Sr/ of +63.6 might indicate significant seawater exchange with volcanic rocks derived from mantle with chondritic REE patterns. This demonstrates the presence of significant continental crust in the Archean and seawater-volcanic rock interaction in a rifting environment similar to modern analogs.

Olszewski, W.J. Jr.; Gibbs, A.K.; Wirth, K.R.

1985-01-01

207

Discovery of the base of the Pinal Schist and the Bear Canyon sequence below it in the eastern Metamorphic terrane of the Dos Cabezas mountains, Cochise County, Arizona  

SciTech Connect

The eastern metamorphic terrane of the Dos Cabezas mountains is underlain by Pinal Schist (PS). Recent detailed mapping along the western edge of this terrane shows that a flat planar regional unconformity (UC) bounds this Pinal body at its western stratigraphic base. Below the UC lies 8 km[sup 2] of greenschist facies metapelites and metafelsites here given the provisional name of the Bear Canyon sequence (BCS). The PS above the UC is over 10 stratigraphic km, grading from 1 km conglomerate at the base (clasts are metafelsites and metasediments with very minor quartz and granite) up into 3 km of sandstones and then pelite, all with greenschist facies overprint. Relict bedding with abundant crossbedding is common; the sequence is upright. Foliation parallels bedding. Lineation is absent. The UC itself is well exposed in two places, on both sides of Happy Camp Canyon (HCC). On the west of HCC, the surface is exposed at the mouth of Bear Canyon (NW1/4 Sec. 31, T13S R28E) striking south and then southwest about 4 km, ending in the N center of Sec. 12, T14S R27E. The unconformity and the Pinal above it lie NS 30E in the north and smoothly swing to NE 50 SE in the south. Below the UC are 6 km[sup 2] of metasandstone and metafelsites of the BCS. The metasandstone is quartz-sericite schist with strong lineation ([minus]50 S70E) in its northern km of exposure. Bedding and foliation are NS 60 E in N, and NE 70 SE in S. This schist body is intruded on the E by a dike of quartz-phyric metafelsite to 1 km wide which underlies the UC along its entire length. The felsite shows strong relict flow layering and no foliation. Flow layering is NS 90 in the N, and strikes and dips variably in the S. A 1/4 km[sup 2] metafelsite plug intrudes the schist on the W, with flow layering NE 90. The two exposures of the UC are separated by a Precambrian normal fault striking N45E and dipping moderately SE under HCC alluvial fill; it has about a km of dip slip.

Erickson, R.C. (Sonoma State Univ., Rohnert Park, CA (United States). Geology Dept.)

1993-04-01

208

Identification of familial clustering for cancer through the family health strategy program in the municipality of Angra dos Reis, Rio de Janeiro, Brazil.  

PubMed

Identification of families with history of cancer in the municipality of Angra dos Reis, Rio de Janeiro (Brazil), through the Brazilian Unified Primary Health Care System was explored based in the Community Health Agents (CHA) program. This study was divided into two phases: a descriptive one with a cross-sectional epidemiological data of families with history of cancer based on CHA-collected data from home visits in four primary health care units. The second phase consisted in identifying familial clustering of three or more individuals with cancer through construction of a three-generation pedigree and revisited by an itinerant group of medical geneticists. Genetic counseling was carried out with the intent of selecting potential families at risk for hereditary familial cancers. In the first phase of the study, 1,581 families were interviewed by the CHA at their homes. A positive history for cancer was present in 42.3 % of families, comprising 22.3 % with only one case per family, 11.2 % with two cases, and 8.6 % with three or more cases in the family. The informant reported that 15 % of the cases were from the father lineage, 12 % from the mother lineage, and 12.1 % within siblings. In the remaining 60.9 % families, cancer was present in both sides of the family. The types of cancer reported were uterus 8.7 % (n?=?137), stomach 7.7 % (n?=?122), breast 6.9 % (n?=?109), throat 6.8 % (n?=?99), prostate 5.4 % (n?=?85), lung 5.6 % (n?=?88), bowel 3.7 % (n?=?59), and unspecified sites in 6.8 % (n?=?108) of families. No statistical differences were noted between the data collected on each primary care unit. In the second phase of the study, 136 families (2.9 %) from the total of families interviewed in phase 1 were selected due to the presence of three or more individuals with cancer in the family. Among those, only 73 families attended genetic counseling. Comparison between the data obtained by the CHA and the medical geneticists shows complete agreement in 36 cases (49.3 %), partial agreement in 25 cases (34.2 %) with more detailed information in the CHA sheets, discordance in 4 cases (5.5 %), and not possible to correlate in 8 cases due to identification inconsistency. Risk assessment for cancer was calculated based on the criteria adopted by Scheuner et al. (Genet Med 12(11):726-735, 2010) and revealed that 50.0 % of the families were classified as having a weak risk, 36.1 % a moderate risk, and 13.8 % were considered of high risk. Concerning known hereditary cancer syndromes, we found one family that met the criteria for breast and ovary hereditary cancer (1.4 %) and one family with non-polyposis hereditary colon cancer as revised by Bethesda protocol. Such preliminary results indicated that the Brazilian Primary Health Care system based on the CHA framework can be an effective entrance into the Unified Brazilian Health Care System (SUS-Brazil) for individuals with genetically determined diseases, such as familial cancer. Families with a history of three or more cases of cancer and considered of high risk for familial cancer could be referred to a tertiary health center for proper oncogenetic counseling. PMID:25063732

Vieira, Daniela Koeller Rodrigues; Attianezi, Margareth; Esposito, Ana Carolina; Barth, Anneliese; Sequeira, Cecília; Krause, Nathália; Oliveira, Vivian; Lucidi, Alexandre; Serao, Cassio; Llerena, Juan C

2015-01-01

209

Spectroscopic (FT-IR, 1H, 13C NMR, UV), DOS and orbital overlap population analysis of copper complex of (E)-4-(2-(4-nitrophenyl) diazenyl)-N, N bis ((pyridin-2-yl) methyl) benzamine by density functional theory  

NASA Astrophysics Data System (ADS)

The geometric parameters, chemical shifts, FTIR, NMR and orbital overlap population along with DOS (density of states) to know different kinds of interactions for binding of copper atom with (E)-4-(2-(4-nitrophenyl) diazenyl)-N, N bis ((pyridin-2-yl) methyl) benzamine to form its copper complex has been reported by DFT methods. The theoretically predicted values for structural parameters are in agreement with the experimentally reported values. NMR chemical shifts calculated using B3LYP/DFT/GIAO level of theory gives information about binding of copper atom with three nitrogen atoms namely N (3, 8 and 11). Orbital overlap population analysis using DFT/B3LYP/SDD level of theory is used to study the kind of interactions involved in binding of copper with the three nitrogen atoms. DOS studies are done to know about the contribution of alpha, beta electrons to the valence and conduction band. IR spectroscopy investigations gave the absorption bands for the formation of title compound. Electronic spectrum along with HOMO-LUMO energies of the title compound has been investigated using Time-dependent (TD-DFT) approach.

Diwaker

2015-02-01

210

Leonel Fernando Perondi CURRICULUM VITAE  

E-print Network

/03/1958, Caxias do Sul/RS - Brasil Carteira de identidade: 298641/MAER/ SP/ 02/02/1982 CPF: 21245126091 Endereço ­ São José dos Campos, SP - Brasil - Caixa Postal: 515 Telefone: (12) 3456707 Fax: 3456717 E Campos, SP - Brasil Telefone: (12) 39171779 E-mail: perondi@directnet.com.br 2 ­ FORMA��O ACAD�MICA

211

A diarrheal diseases control program among Nicaraguan refugee children in Campo Luna, Honduras.  

PubMed

A pilot study was planned and carried out in a Nicaraguan refugee camp in Honduras during November and December 1978 in an effort to reduce the incidence of severe dehydration among diarrheal patients arriving at the health center and to determine whether or not an auxiliary with limited training could correctly triage and supervise oral rehydration of children with diarrheal diseases. 71 refugee children arriving at the Camp Luna Health Center with mild or moderate diarrhea were admitted to the study. Diagnoses and assessments of dehydration were performed by a trained nurse auxiliary solely on the basis of the following clinical signs: decreased skin turgor; sunken eyes or fontanel; rapid, faint, or irregular radial pulse; diminished urine output; dry mucosa; and general appearance. Mothers were provided with 2 liters of "Oralyte" solution and were instructed to administer as much solution to the children as they could tolerate, beginning with an initial regimen of 200cc every 3-4 hours. Breastfeeding was encouraged. The auxiliary demonstrated how to correctly prepare and use the solution. 83% of the cases occurred in children younger than age 2, 66 of the 71 children completed the course of treatment, and 52 (80%) were completely asymptomatic at discharge. 12 were fully rehydrated but had persistent mucoid stools; 1 was discharged despite continued vomiting; and 1 was referred to a hospital. Overall, the study underscored the need to educate mothers regarding diarrheal disease and the proper use of oral rehydration. The study demonstrated that with proper instruction and supervision mothers can successfully deliver oral rehydration therapy to their children in a field setting. PMID:7236934

Isaza, P; de Quinteros, Z T; Pineda, E; Parchment, C; Aguilar, E; McQuestion, M J

1980-01-01

212

PROGRAMA DE MAESTRA Y DOCTORADO EN INGENIERA Subcomit Acadmico por Campo del Conocimiento  

E-print Network

para tratamiento de aguas residuales Dr. Simón González y Dr. Oscar González (Campus CU) Dra. Gabriela aguas residuales Dr. Pedro Martínez Pereda y Dr. Eduardo Vega (Campus CU) Dr. Simón González y Dr. Oscar) Tratamiento anaerobio de aguas residuales y lodos Dr. Adalberto Noyola (Campus CU) y Dr. Juan Manuel Morgan

Islas, León

213

Relative equilibria in continuous stellar dynamics Juan Campos, Manuel del Pino, and Jean Dolbeault  

E-print Network

field gravitational potential solving the Poisson equation: = . Kinetic models like system (1, v) dx dv = R3 (t, x) dx = M does not depend on t. The first equation in (1) is the Vlasov equation of each Dirac mass with itself. It is also possible to relate (1) with discrete systems as follows

Boyer, Edmond

214

Forthcoming in: Nauro Campos and Jan Fidrmuc (eds.), "Political Economy of Transition and  

E-print Network

to economic theory. One such challenge is to the conventional wisdom of economic growth of recent decades: the role in productivity growth that economic theory as well as empirical literature attributes, according to the premise of the "new growth theory", is that educational achievements in them are completely

Royal Holloway, University of London

215

DEL CAMPO A LA CIUDAD EN COLOMBIA. LA INFILTRACIÓN URBANA DE LOS SEÑORES DE LA GUERRA  

Microsoft Academic Search

Para sorpresa de la opinión en Colombia, la mafia en el sentido de la definición tradicional de ‘empresarios de la protección’, asociada a la imagen de los mafiosos sicilianos, rusos o los japoneses de la yakuza, es un fenómeno muy reciente en la historia de las ciudades del país. Más de una década posterior al apogeo de Pablo Escobar y

Gustavo Duncan

2005-01-01

216

Bovine immunoprotection against Rhipicephalus microplus with recombinant Bm86-Campo Grande antigen  

Technology Transfer Automated Retrieval System (TEKTRAN)

The southern cattle fever tick, Rhipicephalus microplus, is arguably the most economically important external parasite of cattle globally. The inappropriate use of readily available chemical acaricides has driven the evolution of resistance in populations of R. microplus. Anti-tick vaccines represen...

217

Análise da profilaxia da raiva humana em Campo Grande, Mato Grosso do Sul, Brasil, em 2002  

Microsoft Academic Search

Timely application of adequate treatment, speedy and thorough observation of animals, and streamlined information transfer provide qual- ity rabies epidemiological surveillance in cases of attacks by animals. This study aims to evalu- ate rabies surveillance and the use of a comput- erized system in the surveillance process. A total of 4,168 attacks by animals were analyzed. The injuries were considered

Leonardo Rigo; Michael Robin Honer

2005-01-01

218

Pesticide Safety for Farmworkers = Uso Seguro de Pesticidas para los Trabajadores del Campo.  

ERIC Educational Resources Information Center

A booklet for farmworkers and employers uses illustrations and simple text in English and Spanish to inform about the dangers, precautions, and use of pesticides. Topics covered include methods of pesticide absorption; signs/symptoms of pesticide poisoning; first aid; residues; appropriate work clothes; safe and unsafe pesticide practices; how to…

Poli, Bonnie; Fluker, Sam S.

219

abril-junio2006Cinvestav3 Cada disciplina cientfica o campo de  

E-print Network

resultan relevantes en la selección de los lugares de toma de datos y qué tipo de instrumento se utiliza, morfina, alcohol, peyote, etcétera? · ¿Por qué es importante estudiar y qué tipos de análisis se pueden

220

Prevention and control of sulfate scaling in the Namorado field, Campos Basin, Brazil  

SciTech Connect

Precipitation inhibitor squeeze treatments have been performed in the last 5 years in the Namorado field to avoid barium sulfate and strontium sulfate scaling in the producing tubing. This paper describes the laboratory tests conducted to select inhibitor and to simulate the squeeze operation in porous media. Based on these tests a polyacrylic acid product was used in the squeeze operations. The squeeze operation design is described as well as the strategy for analytical monitoring of the produced waters to select the wells with high precipitation potential for the prevention treatment. This paper describes the occurrence of spherical precipitated material (with morphology similar to ooids formed in natural environments) at the bottom of the well NA-C. The analysis of the ooids, associated with the production parameters, allowed the determination of the effectiveness of the squeeze treatment and the understanding of the precipitation mechanisms.

Bezerra, M.C.M.; Rosario, F.F. do; Khalil, C.N.; Milanez, P.V.A.; Souza, R.S. de [Cidade Univ., Rio de Janeiro (Brazil). Petrobras Research and Development Center

1996-08-01

221

Petrobras expands gas reinjection in Brazil`s Amazonas State and Campos Basin  

SciTech Connect

Petrobras contracted with Dresser-Rand Co. and its affiliate Paragon Engineering Services Inc. to design, procure and fabricate the process modules and develop the overall layouts of the gas compression systems for four Brazilian projects: the Urucu region, the Marlim field (P-19), the Albacora field (P-31) and the Corvina field (P-9). The high-pressure Urucu injection project is the only one of the four that is onshore. This is the first time the two US companies have combined their expertise on joint projects in Brazil. However, it is not their first effort in South America. The paper briefly describes the gas compression efforts using turbocompressors.

Cosso, S. [Dresser-Rand, Houston, TX (United States)

1999-05-01

222

Velamo do campo: its volatile constituents, secretory elements, and biological activity.  

PubMed

The volatile components from Croton campestris root bark were localized by an anatomical study and analyzed by gas chromatography-mass spectrometry for the first time. The roots of this plant showed secretory cells. These volatile constituents, isolated from the dichloromethane extract by hydrodistillation, were analyzed by gas chromatography-mass spectrometry. We found 69 components. They were characterized, and the major constituents of crude oil root barks were spathulenol (23.3%) and borneol (18.7%). Growth inhibitory activity of the active compounds in solution was evaluated by measuring minimal inhibitory concentrations using a broth micromethod. The minimal inhibitory concentration of root bark volatile constituents was 1.56 ?g/mL for Staphylococcus aureus, 3.125 ?g/mL for Candida albicans, and 6.25 ?g/mL for Aspergillusniger. PMID:22612296

El Babili, Fatiha; Roques, Christine; Haddioui, Laila; Bellvert, Floriant; Bertrand, Cédric; Chatelain, Christian

2012-07-01

223

La epigenética y los estudios en gemelos en el campo de la psiquiatría  

Microsoft Academic Search

SUMMARY The sequence of the human genome integrates the keystone of our life. Part of it is transcribed to RNA, which in turn provides the information required by our cells to produce proteins. Discoveries in the genetics field have been essential to medicine and have been used to develop strategies to modify, prevent and propose new therapeutic approaches for human

Adriana Estrella González Ramírez; Alejandro Díaz Martínez; Adriana Díaz-Anzaldúa

2008-01-01

224

São conhecidos os sete parâmetros da textualidade , propostos em Beaugrande 1980 e desenvolvidos em Beaugrande & Dressler 1981: por um lado, um conjunto de parâmetros associados a circunstâncias de produção e de recepção dos textos (intencionalidade , aceitabilidade , informatividade , situacionalidade e intertextualidade ); por outro, coesão e coerência , entendidas como propriedades centradas no próprio  

Microsoft Academic Search

texto 1 . Esta perspectiva - que constituiu, inequivocamente, um contributo fundamental para a descrição linguística dos textos - pode hoje ser retomada e desenvolvida em função de aspectos que têm entretanto sido sublinhados por outros autores. É o caso da noção de plano de texto , desenvolvida nomeadamente por Jean-Michel Adam 2 : recuperando e actualizando a dispositio da

Maria Antónia Coutinho

225

Tritium ((3)H) as a tracer for monitoring the dispersion of conservative radionuclides discharged by the Angra dos Reis nuclear power plants in the Piraquara de Fora Bay, Brazil.  

PubMed

Presently, two nuclear power plants operate in Brazil. Both are located at Itaorna beach, Angra dos Reis, approximately 133 km from Rio de Janeiro city. The reactor cooling circuits require the input of seawater, which is later discharged through a pipeline into the adjacent Piraquara de Fora Cove. The radioactive effluents undergo ion-exchange treatment prior to their release in batches, causing the enrichment of (3)H relative to other radionuclides in the discharged waters. Under steady state conditions, the (3)H gradient in the Piraquara de Fora waters can be used to determine the dependence of the dilution factor on the distance from the discharge point. The present work describes experiments carried out at the reactor site during batch release episodes, including time series sampling at the discharge point and surface seawater sampling every 250 m to a distance of 1250 m, after a double distillation, the (3)H concentration was measured by liquid scintillation counting applying a Quantulus liquid scintillation spectrometer. The obtained results showed a linear relationship between the (3)H concentration and distance from the discharge point. At 1250 m from the discharge point a dilution index of 1:15 was measured which fits the expected value based on modeling. PMID:24959753

de Carvalho Gomes, Franciane; Godoy, José Marcus; de Carvalho, Zenildo Lara; de Souza, Elder Magalhães; Rodrigues Silva, José Ivan; Tadeu Lopes, Ricardo

2014-10-01

226

A terD Domain-Encoding Gene (SCO2368) Is Involved in Calcium Homeostasis and Participates in Calcium Regulation of a DosR-Like Regulon in Streptomyces coelicolor.  

PubMed

Although Streptomyces coelicolor is not resistant to tellurite, it possesses several TerD domain-encoding (tdd) genes of unknown function. To elucidate the function of tdd8, the transcriptomes of S. coelicolor strain M145 and of a tdd8 deletion mutant derivative (the ?tdd8 strain) were compared. Several orthologs of Mycobacterium tuberculosis genes involved in dormancy survival were upregulated in the deletion mutant at the visual onset of prodiginine production. These genes are organized in a putative redox stress response cluster comprising two large loci. A binding motif similar to the dormancy survival regulator (DosR) binding site of M. tuberculosis has been identified in the upstream sequences of most genes in these loci. A predicted role for these genes in the redox stress response is supported by the low NAD(+)/NADH ratio in the ?tdd8 strain. This S. coelicolor gene cluster was shown to be induced by hypoxia and NO stress. While the tdd8 deletion mutant (the ?tdd8 strain) was unable to maintain calcium homeostasis in a calcium-depleted medium, the addition of Ca(2+) in ?tdd8 culture medium reduced the expression of several genes of the redox stress response cluster. The results shown in this work are consistent with Tdd8 playing a significant role in calcium homeostasis and redox stress adaptation. PMID:25535276

Daigle, François; Lerat, Sylvain; Bucca, Giselda; Sanssouci, Édith; Smith, Colin P; Malouin, François; Beaulieu, Carole

2015-03-01

227

DevR (DosR) mimetic peptides impair transcriptional regulation and survival of Mycobacterium tuberculosis under hypoxia by inhibiting the autokinase activity of DevS sensor kinase  

PubMed Central

Background Two-component systems have emerged as compelling targets for antibacterial drug design for a number of reasons including the distinct histidine phosphorylation property of their constituent sensor kinases. The DevR-DevS/DosT two component system of Mycobacterium tuberculosis (M. tb) is essential for survival under hypoxia, a stress associated with dormancy development in vivo. In the present study a combinatorial peptide phage display library was screened for DevS histidine kinase interacting peptides with the aim of isolating inhibitors of DevR-DevS signaling. Results DevS binding peptides were identified from a phage display library after three rounds of panning using DevS as bait. The peptides showed sequence similarity with conserved residues in the N-terminal domain of DevR and suggested that they may represent interacting surfaces between DevS and DevR. Two DevR mimetic peptides were found to specifically inhibit DevR-dependent transcriptional activity and restrict the hypoxic survival of M. tb. The mechanism of peptide action is majorly attributed to an inhibition of DevS autokinase activity. Conclusions These findings demonstrate that DevR mimetic peptides impede DevS activation and that intercepting DevS activation at an early step in the signaling cascade impairs M. tb survival in a hypoxia persistence model. PMID:25048654

2014-01-01

228

27 CFR 9.175 - Dos Rios.  

Code of Federal Regulations, 2012 CFR

...Mendocino County, California, at the confluence of the Eel River and the Middle Fork of the Eel River. The area's boundaries are defined as follows...the section line, crossing the Middle Fork of the Eel River, to the southeast corner of section...

2012-04-01

229

27 CFR 9.175 - Dos Rios.  

Code of Federal Regulations, 2013 CFR

...Mendocino County, California, at the confluence of the Eel River and the Middle Fork of the Eel River. The area's boundaries are defined as follows...the section line, crossing the Middle Fork of the Eel River, to the southeast corner of section...

2013-04-01

230

27 CFR 9.175 - Dos Rios.  

Code of Federal Regulations, 2014 CFR

...Mendocino County, California, at the confluence of the Eel River and the Middle Fork of the Eel River. The area's boundaries are defined as follows...the section line, crossing the Middle Fork of the Eel River, to the southeast corner of section...

2014-04-01

231

27 CFR 9.175 - Dos Rios.  

Code of Federal Regulations, 2011 CFR

...Mendocino County, California, at the confluence of the Eel River and the Middle Fork of the Eel River. The area's boundaries are defined as follows...the section line, crossing the Middle Fork of the Eel River, to the southeast corner of section...

2011-04-01

232

Privatized Housing Dos and Don'ts.  

ERIC Educational Resources Information Center

Offers tips for higher education institutions on navigating the relationship with a privatized student housing developer: don't assume the project costs nothing, do understand the difference between your goals and the developer's, do create a feasibility study, don't treat every relationship the same, do put the student first, and don't forget the…

Milshtein, Amy

2003-01-01

233

27 CFR 9.175 - Dos Rios.  

Code of Federal Regulations, 2010 CFR

...Rios Quadrangle); then (2) Proceed straight south along the section line, crossing...Quadrangle); then (3) Proceed 0.9 mile straight west along the southern boundary of...then (5) Proceed 2.1 miles straight west along the section line,...

2010-04-01

234

Desenvolvimento do Portal dos Jogos Cooperativos Computacionais  

Microsoft Academic Search

In the context of the revision of traditional education methodologies, and the increasing use of computers and the Internet in education, this work describes the project and the construction of a Computational Cooperative Games Site (www.comp.ufla.br\\/pjcc\\/), which can be used as learning tool in basic education schools.

Rubens Takiguti Ribeiro; Carlos Eduardo; Magalhães Cobucci; José Monserrat Neto; Renata Couto Moreira

235

76 FR 27237 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-05-11

236

76 FR 37244 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-06-27

237

76 FR 64785 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-10-19

238

75 FR 7929 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190-100 LR...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-02-23

239

76 FR 21822 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135ER...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim-- 12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-04-19

240

76 FR 13539 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190 Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim-- 12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-03-14

241

76 FR 7511 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim-- 12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-02-10

242

75 FR 19201 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-04-14

243

76 FR 2279 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-Putim- 12227-901 S[atilde]o Jose dos Campos-SP--BRASIL; telephone +55 12 3927- 5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-01-13

244

75 FR 42585 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2010-07-22

245

75 FR 19193 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 and ERJ...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-04-14

246

75 FR 31332 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-120, -120ER...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim-- 12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-06-03

247

78 FR 39567 - Airworthiness Directives; Embraer S.A. Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim--12227-901 S[atilde]o Jose dos Campos-SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; email distrib@embraer.com.br;...

2013-07-02

248

75 FR 30277 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190-100 STD...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-06-01

249

76 FR 55783 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 190 Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; e-mail distrib@embraer.com.br;...

2011-09-09

250

75 FR 5685 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-135BJ...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170-- Putim--12227-901 S[atilde]o Jose dos Campos--SP-BRASIL; telephone: +55 12 3927-5852 or +55 12 3309-0732; fax: +55 12 3927-7546; e-mail:...

2010-02-04

251

78 FR 19090 - Airworthiness Directives; Embraer S.A. Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Publications Section (PC 060), Av. Brigadeiro Faria Lima, 2170--Putim--12227-901 S[atilde]o Jose dos Campos--SP--BRASIL; telephone +55 12 3927-5852 or +55 12 3309-0732; fax +55 12 3927-7546; email distrib@embraer.com.br;...

2013-03-29

252

Japan-Brazil Space Sector Workshop August 26 27, 2010  

E-print Network

Japan-Brazil Space Sector Workshop August 26 ­ 27, 2010 Sergio Sobral de Oliveira Auditorium (IAI building) INPE's headquarters - São José dos Campos, SP, Brazil Satellite Applications on Agricultural;NDVI Desertification process ­ NE Brazil Surface Albedo Surface Temperature #12;Perfil temporal do NDVI

253

Two-dimensional diagnostics of edge and divertor region of toroidal helical plasmas using a lithium beam probe  

E-print Network

for Space Research, Sao Jose dos Campos, Brazil Abstract A two-dimensional neutral lithium beam probe has beam probe K. Nakamura a,*, H. Iguchi b , M. Ueda c , T. Morisaki b , M. Isobe b , K. Ida b , C of Nuclear Materials 313­316 (2003) 725­728 www.elsevier.com/locate/jnucmat #12;A lithium beam probing (Li

254

Estratégias de coleta de dados com trabalhadores de baixa escolaridade  

Microsoft Academic Search

Um olhar para as pesquisas desenvolvidas no campo da Psicologia Organizacional e do Trabalho no Brasil aponta que os pesquisadores optam por estudar categorias ocupacionais cujos trabalhadores são mais instruídos. Tal realidade minimiza as possibilidade s de generalização e de aplicação dos resultados. Alguns pesquisadores, entretanto, insistem em focalizar as categorias mais desfavorecidas e concentradoras de pessoas com baixa escolaridade.

Livia de Oliveira Borges; José Q. Pinheiro

2002-01-01

255

Porous Boron-Doped Diamond/Carbon Nanotube Electrodes H. Zanin,*,  

E-print Network

INTRODUCTION The exceptional set of physical properties possessed by synthetic diamond films grown by chemicalPorous Boron-Doped Diamond/Carbon Nanotube Electrodes H. Zanin,*, P. W. May, D. J. Fermin, D. Plana Jose dos Campos, Sao Paulo 12227-010, Brazil ABSTRACT: Nanostructuring boron-doped diamond (BDD) films

Bristol, University of

256

PROGRAMA DE POSGRADO EN CIENCIAS DE LA TIERRA REQUISITOS DE INGRESO  

E-print Network

tutores dentro del campo de las Ciencias de la Tierra. 10. Carta del tutor donde se plasme su aceptaciónPROGRAMA DE POSGRADO EN CIENCIAS DE LA TIERRA REQUISITOS DE INGRESO Para ingresar al plan de bueno del tutor. 8. Carta de exposición de motivos 9. Dos cartas de recomendación de investigadores o

Grutter, Michel

257

Micronucleus test and observation of nuclear alterations in erythrocytes of Nile tilapia exposed to waters affected by refinery effluent  

Microsoft Academic Search

Micronuclei and nuclear alterations tests were performed on erythrocytes of Oreochromis niloticus (Perciformes, Cichlidae) in order to evaluate the water quality from Paraíba do Sul river, in an area affected by effluents from an oil shale processing plant, located in the city of São José dos Campos, Brazil-SP. Water samples were collected on 2004 May and August (dry season) and

Tatiana da Silva Souza; Carmem S. Fontanetti

2006-01-01

258

J. Field Ornithol. 75(3):232238, 2004 Efficacy of diatomaceous earth at reducing populations  

E-print Network

earth (DE) at reducing ectoparasite loads in nests of Tree Swallows (Tachycineta bicolor) over two field Tachycineta bicolor, durante dos temporadas de trabajo de campo. La diatomeas redujeron significativamente las, Tachycineta bicolor, Tree Swallow Parasites have been recognized as playing a key role in the behavior

Dawson, Russell D.

259

Directing the Attention of a Wearable Camera by Pointing Gestures Teofilo E. de Campos Walterio W. Mayol Cuevas  

E-print Network

-and-click device for interacting with menus displayed on a head mounted display. Pointing gestures are the main mounted to one or other body part -- head, shoulder, chest and hand have all been used -- making, and argued that mounting it at the shoulder This work was supported by a CAPES (Brazil) scholarship to Td

Murray, David

260

Pathology of dogs in Campo Grande, MS, Brazil naturally co-infected with Leishmania infantum and Ehrlichia canis.  

PubMed

Different parasites that commonly occur concomitantly can influence one another, sometimes with unpredictable effects. We evaluated pathological aspects of dogs naturally co-infected with Leishmania infantum and Ehrlichia canis. The health status of the dogs was investigated based on histopathological, hematological and biochemical analyses of 21 animals infected solely with L. infantum and 22 dogs co- infected with L. infantum and E. canis. The skin of both groups showed chronic, predominantly lymphohistioplasmacytic inflammatory reaction. The plasmacytosis in the lymphoid tissues was likely related with the hypergammaglobulinemia detected in all the dogs. The disorganization of extracellular matrix found in the reticular dermis of the inguinal region and ear, characterized by the substitution of thick collagen fibers for thin fibers, was attributed to the degree of inflammatory reaction, irrespective of the presence of parasites. In addition, the histopathological analysis revealed that twice as many dogs in the co-infected group presented Leishmania amastigotes in the ear skin than those infected solely with Leishmania, increasing the possibility of becoming infected through sand fly vectors. Our findings highlight the fact that the health of dogs infected concomitantly with L. infantum and E. canis is severely compromised due to their high levels of total plasma protein, globulins, alkaline phosphatase and creatine kinase, and severe anemia. PMID:25517530

Andrade, Gisele Braziliano; Barreto, Wanessa Teixeira Gomes; Santos, Luciana Ladislau Dos; Ribeiro, Laura Raquel Rios; Macedo, Gabriel Carvalho de; Sousa, Keyla Carstens Marques de; André, Marcos Rogério; Machado, Rosangela Zacarias; Herrera, Heitor Miraglia

2014-12-01

261

Su una teoria bilocale dell’interazione tra una particella con spin 1\\/2 e il campo elettromagnetico  

Microsoft Academic Search

\\u000a Riassunto  Si presenta una teoria bilocale per una particella libera con spin 1\\/2 fondata su una semplice generalizzazione lineare dell’equazione\\u000a di Dirac. Si risolve tale equazione introducendo una condizione di quantizzazione della massa e una nuova condizione supplementare\\u000a che sostituisce la eondizione di Yukawa usata in un precedente lavoro. La generalizzazione della teoria è tale che nelle equazioni\\u000a le coordinate del

E. Minardi

1956-01-01

262

Reproductive systems and crossing potential in three species of Bulbophyllum (Orchidaceae) occurring in Brazilian ‘campo rupestre’ vegetation  

Microsoft Academic Search

Experimental self-, cross- and interspecific pollinations were carried out inBulbophyllum weddellii, B. involutum andB. ipanemense (Orchidaceae). The last two species are closely related, butB. weddellii is somewhat more distant. The three species are self-compatible, with pollination by a vector necessary for fruit formation. In all crossing types, high rates of fruit abortion and formation of seeds without embryos were observed,

Eduardo Leite Borba; George John Shepherd; Jofio Semir

1999-01-01

263

Efectos de Campos Magnéticos en las Tasas de Consumo de Madera por Coptotermes formosanus, la Termita Subterránea de Formosa.  

Technology Transfer Automated Retrieval System (TEKTRAN)

Sixty groups of 500 workers and 50 soldiers of Coptotermes formosanus were maintained in costume designed containers and fed with a piece of red oak wood (Quercus rubra). Twenty of these groups were exposed to permanent magnets with a flux of 800 G. Another 20 groups were exposed to a permanent mag...

264

Natural radiation exposure in the Campo Arañuelo region in the surroundings of Almaraz nuclear power station (Spain)  

Microsoft Academic Search

During 1998 regional surveys were conducted to evaluate natural radiation exposure of people in the vicinity of the six Spanish nuclear power stations. Indoor radon, external gamma dose rates outdoors and indoors and radioactivity in soil were measured in these surveys. The highest mean annual effective dose to the population was found in the surroundings of the Almaraz nuclear power

L. S. Quindós Poncela; P. L. Fernández Navarro; C. Sainz Fernández; J. L. Martin Matarranz; J. Arteche García

2005-01-01

265

Octomys mimax (Rodentia: Octodontidae) RAU L SOBRERO, VALERIA E. CAMPOS, STELLA M. GIANNONI, AND LUIS A. EBENSPERGER  

E-print Network

as La Puntilla, near Tinogasta, Cat- marca,'' Argentina (elevation about 1,000 m). Octomys joannius O feet and tail than T. barrerae (Diaz et al. 2000). Overall coloration of fur is light brown, similar

Hayssen, Virginia

266

Improvements in Gang Scheduling for Parallel Supercomputers Fabricio Alves Barbosa da Silva 1;\\Lambda Luis Miguel Campos 2  

E-print Network

Improvements in Gang Scheduling for Parallel Supercomputers Fabricio Alves Barbosa da Silva 1 and Comp. Science, University of California, Irvine, CA 92697, U.S.A Abstract Gang scheduling has been­ current Gang, that is a generalization of gang­ scheduling, and allows for the flexible simultane­ ous

Scherson, Isaac D.

267

Evaluation on the effectiveness of actions for controlling infestation by rodents in Campo Limpo region, São Paulo Municipality, Brazil  

Microsoft Academic Search

Rodents are responsible for the transmission of more than 60 diseases both to human beings and to domestic animals. The increase in rodent infestation in a given area brings several health problems to the nearby population. Thus, when infestation increases, it is time to take intervention measures. Although many countries have implemented programs aimed at controlling rodent infestation, literature on

Eduardo de Masi; Pedro José Vilaça; Maria Tereza Pepe Razzolini

2009-01-01

268

AS PEQUENAS E MÉDIAS EMPRESAS NO BRASIL E NA CHINA: UMA ANÁLISE COMPARATIVA AUTORES JOSÉ GUILHERME FERRAZ DE CAMPOS  

Microsoft Academic Search

The importance of entrepreneurship in Brazil has increased, as occurs in developed countries where the entrepreneurs represent a significant portion that drives the economy. Among the BRICs, Brazil follows after China, which presents a vigorous expansion of its economy and the entrepreneurship is one of the drivers of this growth. The Small and Medium Enterprises

AUGUSTO TAKERISSA NISHIMURA; HEIDY R. RAMOS; RODRIGO LEANDRO CHEREZ

269

Extensión del Formalismo de Orbitales de Defecto Cuántico al tratamiento del efecto Stark (SQDO).  

NASA Astrophysics Data System (ADS)

El estudio experimental de las interacciones de átomos Rydberg altamente excitados con campos eléctricos ha experimentado un creciente interés durante las dos últimas décadas debido, en gran medida, al desarrollo de nuevas técnicas para crear y estudiar átomos Rydberg en el laboratorio. Acompañando a estas nuevas técnicas experimentales, es necesario el desarrollo de modelos teóricos que nos permitan contrastar sus medidas y conocer mejor los fundamentos de los mismos. Desde el punto de vista teórico el conocimiento del desdoblamiento de los niveles energéticos de un átomo en función de la magnitud del campo eléctrico aplicado (lo que se conoce como mapa Stark) es el mejor punto de partida para la descripción del sistema y un prerrequisito fundamental para el cálculo de distintas propiedades atómicas en presencia del campo eléctrico tales como intensidades de transición, umbrales de ionización de campo eléctrico, tiempos de vida, posición y anchura de cruces evitados, etc. En este trabajo presentamos la adaptación del método de orbitales de defecto cuántico [1,2,3] al tratamiento del efecto Stark (SQDO) [4] y su aplicación al cálculo de los desdoblamientos energéticos y fuerzas de oscilador de estados Rydberg en los átomos de Li, Na y K. El propósito de este estudio es, por un lado, desarrollar métodos fiables para la determinación de propiedades atómicas en presencia de campos eléctricos y, por otro, mostrar la fiabilidad de las funciones de onda QDO en la descripción del efecto Stark en sistemas atómicos.

Menéndez, J. M.; Martín, I.; Velasco, A. M.

270

Ultrasonic Chemical Vapor Deposition–coated Tip versus High and Low-speed Carbide Burs for Apicoectomy: Time Required for Resection and Scanning Electron Microscopy Analysis of the Root-end Surfaces  

Microsoft Academic Search

This study compared ultrasonic chemical vapor deposition (CVD)-coated tip (CVDentus #8.1117-1; Clorovale Diamantes Ind. e Com. Ltda Epp, São José dos Campos, SP, Brazil) versus high-speed (#FG700L) and low-speed (#699) carbide burs for apicoectomy, evaluating the time required for resection and analyzing the root-end surfaces by scanning electron microscopy. Thirty extracted human premolars had the canals instrumented and obturated and

Ricardo Affonso Bernardes; José Villela de Souza Junior; Marco Antonio Húngaro Duarte; Ivaldo Gomes de Moraes; Clovis Monteiro Bramante

2009-01-01

271

MINIOBSERVATRIO ASTRONMICO Diviso de Astrofsica  

E-print Network

­ Programa de visitação pública (palestra & observações visuais no telescópio) Em 2003, 130 pessoas e em 2004, 450 pessoas Em 2005, previsão de até 600 pessoas c/visitas semanais Colaborações c São José dos Campos (SP) Dois ambientes: sala de observação-controle & auditório (20 pessoas

272

TERA-FEIRA, 16 DE OUTUBRO DE 2012 -N0 Cincia e tecnologia de alimentos  

E-print Network

TER�A-FEIRA, 16 DE OUTUBRO DE 2012 - N0 479 Ciência e tecnologia de alimentos Na área industrial ou no campo, na fiscalização ou na elaboração de ingredientes, o foco é o alimento e seus efeitos Mais saúde na mesa DANIELCONZI GABRIELLE BITTELBRUN O cientista de alimentos atua em toda a cadeia produtiva dos

Floeter, Sergio Ricardo

273

848 Brazilian Journal of Physics, vol. 33, no. 4, December, 2003 Spherical Tokamak Development in Brazil  

E-print Network

in Brazil G.O. Ludwig, E. Del Bosco, J.G. Ferreira, L.A. Berni, R.M. Oliveira, M.C.R. Andrade, C.S. Shibata 12227-010, S~ao Jos´e dos Campos, SP, Brazil Received on 18 March, 2003. Revised version received on 19 Plasma Laboratory (LAP) of the National Space Research Institute (INPE) in Brazil. Figure 1. An overall

274

INPE-12145-TDI/969 ANLISE DE EPISDIOS DE TORNADO EM SANTA CATARINA  

E-print Network

INPE-12145-TDI/969 ANÁLISE DE EPIS�DIOS DE TORNADO EM SANTA CATARINA: CARACTERIZA��O SIN�TICA E. Análise de episódios de tornados em Santa Catarina: caracterização sinótica e mineração de dados / I. P. O. Marcelino. ­ São José dos Campos: INPE, 2003. 223p. ­ (INPE-12145-TDI/969). 1.Tornados. 2.Tempestades

275

Universidade Federal de Santa Catarina Biblioteca Universitria  

E-print Network

Cengage A empresa Cengage Learning oferece dezenas de livros eletrônicos, de variados campos do saber sumário deste manual: Capítulo 1 ­ Normas de empréstimo dos livros eletrônicos. Capítulo 2 ­ Há duas formas para acessar e ler os livros eletrônicos. Capítulo 3 ­ Download do software de leitura Adobe

Floeter, Sergio Ricardo

276

A 25 KV/10A PULSER FOR DRIVING A HIGH-POWER PIERCE ELECTRON GUN  

E-print Network

that control grid (g1) is biased at ­300 V according to the tube characteristics displayed in Fig.2. The TTL. José dos Campos 12245-670, SP, Brazil Abstract This paper describes the design and operation of a hard-tube pulser to drive a high-power electron gun. The tube includes a 2.0µF/100kV capacitor bank whose discharge

277

Obtaining journal reprints: the 'dos' and 'don'ts'.  

PubMed Central

In a search for knowledge, and to expand their own work, scientists and academicians have depended on the work of colleagues with similar interests. While attending conferences enables one to acquire useful knowledge, the information so gained is unlikely to be lasting. Furthermore, many persons learn better by reading than by listening, and reading can be done at one's own convenience. These and many other reasons account for the increasing number of reprints requested by researchers, and in medicine, by practicing clinicians. PMID:12408702

Sevinc, Alper; Ramanan, Sundaram V.

2002-01-01

278

INTEGRACIÓN E INCLUSIÓN: DOS CAMINOS DIFERENCIADOS EN EL ENTORNO EDUCATIVO  

Microsoft Academic Search

Para poder llevar a la práctica, de manera efectiva, un modelo educativo que potencie la inclusión es necesario e imprescindible que los docentes compartan los principios que conlleva este movimiento. Exponemos las características de una escuela inclusiva y la necesidad de formación del profesorado para llevarla a cabo de manera satisfactoria.

Cristina Alemañy Martínez

2009-01-01

279

Chave de identifi cação dos Ctenophora da costa brasileira  

Microsoft Academic Search

Oliveira, O.M.P., Mianzan, H., Migotto, A.E. & Marques, A.C. Identifi cation key for the ctenophores from Brazilian coast. Biota Neotrop. Sep\\/Dez 2007 vol. 7, no. 3 http:\\/\\/www.biotaneotropica.org.br\\/v7n3\\/pt\\/ abstract?identifi cation-key+bn03507032007. ISSN 1676-0603. Although ctenophores are abundant and ecologically important in the marine environment, they are poorly known in the Brazilian coast. The present study is a taxonomic key for the ctenophores

Otto Müller; Patrão de Oliveira; Hermes Mianzan; Alvaro Esteves Migotto; Antonio Carlos Marques

280

DOS GENES AOS MEMES: A EMERGÊNCIA DO REPLICADOR CULTURAL  

Microsoft Academic Search

O objetivo desse trabalho é introduzir a memética, as investigações sobre os memes, unidades culturais de imitação que pretensamente são os átomos da cultura e da história. Partindo de uma analogia com a teoria do gene como nível fundamental de seleção, popularizada como a teoria do gene egoísta, a memética pretende propor modelos explicativos que podem ser úteis para compreender

Ricardo Waizbort

281

Freqüência dos insetos na polinização e produção de algodão  

Microsoft Academic Search

Pollinators frequency on cotton flowers and production. Insects frequency on cotton pollination and production. The present experiment was conducted at University Centre Moura Lacerda, Ribeirão Preto, state of São Paulo, and had the aim of studying the insects frequency and behaviour on cotton flowers (Gossypium hirsutum L.) as well as the collection type (nectar and\\/or pollen) of these insects and

Engenheiro Agrônomo

282

Mobilidade dos Funcionários públicos Federais: Diferenças Entre os Poderes  

Microsoft Academic Search

Based on a special Rais-Migra tabulation that allows one to trace work trajectories,the present study estimates the total length of service for active federal civil servants,disaggregated by length of time spent at present post. Prior time is also considered,whether spent in other civil service posts or in private employment.This study was largely motivated by the need to estimate the civil

Kaizô Iwakami Beltrão; Sonoe Sugahara; Fernanda Paes Leme Peyneau; João Luis de Oliveira Mendonça

2005-01-01

283

Animation of Disk Data Storage under MS-DOS  

NSDL National Science Digital Library

This is an animation with interactive buttons allowing the user to step through the components of a formatted disk. The illustration is that of a floppy disk, but the ideas apply to almost any disk format.

Dr. Charles Ward

284

Shield: DoS Filtering Using Traffic Deflection  

E-print Network

deployment via Insurance-like deployment model. #12;Erik Kline, UCLA 810/17/2011 Traffic Deflection Two mechanisms IXP-based nodes advertising false paths. All nodes at the IXP send traffic to the filter Filter resources allow. Lends itself to a Insurance-Style Business Model #12;Erik Kline, UCLA 1510/17/2011 Wait

California at Los Angeles, University of

285

Dos and Don'ts of Writing Presidential Contracts  

ERIC Educational Resources Information Center

In the not-so-distant past, an employment agreement between a university president and a governing board was often nothing more than a handshake. Today, formal contracts are requirements for presidents, with boards and presidents typically relying on lawyers to extensively document terms of employment, salary and benefits, and, perhaps most…

Fain, Paul

2006-01-01

286

A SUBJETIVIDADE NA TEORIA BAKHTINIANA DOS GÊNEROS DO DISCURSO  

Microsoft Academic Search

In this article, it intends to revisit th e theory of Bakhtin about the genres of the discour se in order to discuss about the subjectivity. So, it wonders: how is the subjectivity configured when the theory of Bakhtin of the genres of discourse is discussed? From behind t his, it is the following hypothesis: in the theory of the

Maria Isabel BORGES

287

Improving web servers focused DoS attacks detection  

Microsoft Academic Search

On the Internet, web servers are often the main interface between companies or individuals and the rest of the world. As a result they represent valuable targets for attackers. Although several types of attacks are possible against web server we focus in this paper on flooding based denial of service attacks. We explore the detection of saturation attacks against web

Olivier Paul

288

Compatibilidad sexual entre dos tipos de Hylocerus (Cactaceae)  

Microsoft Academic Search

There are two types of pitahaya that are cultivated in Yucatan Peninsula of Mexico. They differ main- ly in the skin color of the fruit, one of them has a red skin (Uqroo1), while the other has a light yellow skin (Uqroo2) both belong to Hylocereus undatus (Haworth) Britt. & Rose. The yellow skin pitahaya is the sweetest. The studies

Roberta Castillo; Manuel Livera M; Alicia E. Brechú; Judith Márquez-Guzmán

289

Dos and don'ts of CTL state coverage estimation  

Microsoft Academic Search

Coverage estimation for model checking quantifies the completeness of a set of properties. We present an improved version of the algorithm of Hoskote et al. [7] that applies to a larger subset of CTL; we prove properties of the algorithm and apply it to three case studies. From these case studies we derive recommendations for an effective use of coverage

Nikhil Jayakumar; Mitra Purandare; Fabio Somenzi

2003-01-01

290

An Architecture for Tightly Coupled Multi-Robot Cooperation Luiz Chaimowicz1 3, Thomas Sugar2, Vijay Kumar1, and Mario F. M. Campos3  

E-print Network

An Architecture for Tightly Coupled Multi-Robot Cooperation Luiz Chaimowicz1 3, Thomas Sugar2@grasp.cis.upenn.edu, thomas.sugar@asu.edu, mario@dcc.ufmg.br Abstract This paper proposes a new architecture for tightly

Chaimowicz, Luiz

291

Bayesian spatial prediction of the area affected by drilling discharges from an exploratory well using water-based and non-aqueous-based fluids in Campos Basin, Brazil  

NASA Astrophysics Data System (ADS)

Toxic drilling fluids and cutting discharges from oil and gas wells adversely affect local environment near the well site. To determine their effects on benthic communities, it is essential to know both the fate of the discharged materials and the chemical concentrations to which biota were exposed during and after drilling. This paper describes a mapping procedure using Bayesian spatial models to define the deposition area of drilling cuttings and fluids from an exploratory well in a deep-sea site in the Campus Basin, RJ, Brazil, taking into account the concentrations of barium and light hydrocarbons used as chemical tracers. The statistical procedures used allow comparisons between sampled sites and the prediction of results at unsampled sites, as well as the delineation of affected areas. The probable impact of the use of non-aqueous fluid (NAF) was measured through observed changes in sea-floor sediments by using Before-After Control-Impact comparisons in a study with three moments: one before drilling and two after drilling.

Pulgati, F. H.; Fachel, J. M. G.; Ayup-Zouain, R. N.; Landau, L.

2009-01-01

292

P. Campos et al. (Eds.): INTERACT 2011, Part IV, LNCS 6949, pp. 204221, 2011. IFIP International Federation for Information Processing 2011  

E-print Network

. Keywords: Keystroke-level model (KLM), mobile device interaction, Near Field Communication (NFC), static that use Bluetooth, cameras, GPS, Near Field Communication (NFC) [25] or other technologies to #12;A Federation for Information Processing 2011 A Revised Mobile KLM for Interaction with Multiple NFC-Tags Paul

293

Holocene fire history of black colluvial soils revealed by pyrolysis-GC\\/MS: a case study from Campo Lameiro (NW Spain)  

Microsoft Academic Search

The colluvial soils of Galicia (NW Spain) are records of Holocene environmental change. In spite of the omnipresence of charcoal fragments in these soils, the effect of fires on the development of the Galician landscape and the potential role of past societies are poorly understood.We isolated macroscopic charcoal (>2mm) and NaOH-extractable soil organic matter (SOM) from two Galician soils. Molecular

Joeri Kaal; Antonio Martínez Cortizas; Eileen Eckmeier; Manuela Costa Casais; Manuel Santos Estévez; Felipe Criado Boado

2008-01-01

294

Resource management and fertility in Mexico’s Sian Ka’an Biosphere Reserve: Campos, cash, and contraception in the lobster-fishing village of Punta Allen  

PubMed Central

This case study examines the link between marine resource management, and the universal contraceptive use among married couples in the lobster- fishing village of Punta Allen, located in the Sian Ka’an Biosphere Reserve, Quintana Roo, Mexico. Several reasons appear to contribute to small desired and actual family sizes. Some of these include a medical clinic staff effective in promoting family planning, cooperative and private resource ownership, changing cultural attitudes, geographical limitations to population and economic growth, and a desire to conserve the environment for aesthetic and economic motives. Lastly, families desired to preserve a sustained balance between benefiting from lobster harvests today and safeguarding this marine resource for their children in the future. PMID:19672473

Carr, David L.

2009-01-01

295

Mapeamento de Áreas Cafeeiras em imagens de Sensores Orbitais: estudo de caso em Aguanil, Boa Esperança, Campo Belo e Cristais-MG como suporte a estudos regionais  

Microsoft Academic Search

Coffee crop, an important economic and social activity to Brazil, is an agrobusiness segment that has not updated information about the productive profile. The present work comes to add in the sense to develop and\\/or adequate fundamental methods in geotechnologies that may significantly contribute to the study of the coffee crop in Minas Gerais State, allowing to diagnose the geographic

Marco Aurélio Barros

296

An outbreak of Oropouche virus diease in the vicinity of santarem, para, barzil.  

PubMed

An epidemic of human febrile illness caused by Oropouche virus was studied in the village of Mojui dos Campos, Pará State, in February 1975. The major clinical symptoms, fever, chills, headache, myalgia, arthralgia and dizziness persisted for 2 to 7 days. Leukopenia was commonly observed. Some patients were severely ill but no deaths were attributed to the disease. Recurrence of symptoms was reported in several people. 55 cases of recent infection were diagnosed in Mojuí dos Campos between February and April. In the same period 26 cases were recorded from the Palhal area, near to Mojuí. Two additional cases were observed, one in the small settlement of Terra Preta and the other in the town of Santarém, which are 12 and 20 km from Mojuí, respectively. Of the 83 infections, 65 were proven by virus isolation from the blood of patients and 18 by the demonstration of an increasing antibody level to the agent. Both sexes of the population were infected in equal proportions. Most patients were below 20 years of age. In the village of Mojuí dos Campos with a population of about 2,900, 45 (40,1%) out of 112 students aged 4 to 18, had HI antibodies to the virus when examined late in February. The epidemic, however, only declined after the middle of March. Two isolations of Oropouche virus were obtained from some 15,000 Culicoides inoculated into mice. About 4,000 Culicoides and all the 9,420 mosquitoes captured during the outbreak remain to be inoculated. Over 95% of the Culicoides were C. paraensis. Only 1 rodent of the genus Proechimys had HI antibodies to Oropouche virus out of the 602 wild and domestic mammals captured in the area. All 5 reptiles examined were negative. 34 (4.9%) out of the 681 wild birds and 12 (5.8%) out of the 206 domestic birds examined were positive for the presence of HI antibodies to the agent. PMID:941251

Pinheiro, F P; Travassos da Rosa, A P; Travassos da Rosa, J F; Bensabath, G

1976-06-01

297

Topical Calendula officinalis L. successfully treated exfoliative cheilitis: a case report.  

PubMed

Authors describe a case of recurrent exfoliative cheilitis that responded to treatment with a standardized topical preparation of Calendula officinalis L. An eighteen-year-old man was referred to UNESP - São Paulo State University, Department of Biosciences and Oral Diagnosis, São José dos Campos Dental School to investigate a chronic dry scaling lesion on his lips. The patient's main chief was aesthetic compromising. Corticoid therapy was suspended and Calendula officinalis ointment 10% for ad libitum use has been prescribed. The results presented allow the authors to consider Calendula officinalis L. as a potential therapy in cases of cheilitis exfoliative. PMID:20062714

Roveroni-Favaretto, Lúcia Helena Denardi; Lodi, Karina Bortolin; Almeida, Janete Dias

2009-01-01

298

Topical Calendula officinalis L. successfully treated exfoliative cheilitis: a case report  

PubMed Central

Authors describe a case of recurrent exfoliative cheilitis that responded to treatment with a standardized topical preparation of Calendula officinalis L. An eighteen-year-old man was referred to UNESP - São Paulo State University, Department of Biosciences and Oral Diagnosis, São José dos Campos Dental School to investigate a chronic dry scaling lesion on his lips. The patient's main chief was aesthetic compromising. Corticoid therapy was suspended and Calendula officinalis ointment 10% for ad libitum use has been prescribed. The results presented allow the authors to consider Calendula officinalis L. as a potential therapy in cases of cheilitis exfoliative. PMID:20062714

2009-01-01

299

Dos laboratórios aos pontos de venda: uma análise da trajetória dos alimentos funcionais e nutrcêuticos e da sua repercussão sobre a questão agroalimentar.  

E-print Network

??Alimentos funcionais e nutracêuticos são apresentados como alimentos que, além de suas funções básicas nutricionais, demonstram benefícios fisiológicos e/ou reduzem o risco de doenças crônicas.… (more)

Marco Antonio Ferreira de Souza

2008-01-01

300

DISPUTA PELO SAGRADO EM GOIÁS EM FINS DO SÉCULO XIX: O CATOLICISMO OFICIAL DOS BISPOS ULTRAMONTANOS E O CATOLICISMO POPULAR DOS LEIGOS  

Microsoft Academic Search

The present study has as theme the dispute between the ultramontanism and the lay ones about the practices and manifestations of the Catholicism in the years from 1891 to 1907, inserted in the bishopric of D. Eduardo Duarte da Silva (1891-1907). It has for objectives to describe and to analyze what was transformed or maintained amid the religious manifestations permeated

Leila Borges Dias Santos

301

Teaching astronomy mediated by information and communication technologies: a preliminary approach  

NASA Astrophysics Data System (ADS)

O presente trabalho é parte preliminar de um estudo mais amplo em nível de doutorado sobre o ensino de astronomia mediado pelas tecnologias da informação e comunicação, utilizando dispositivos compactos, móveis e pessoais. Este estudo também faz parte do projeto institucional do CEFETMG sobre ambientes diversificados de aprendizagem sob fomento da agência estadual FAPEMIG (Fundação de Amparo à Pesquisa do Estado de Minas Gerais). Esta apresentação aborda o resultado das concepções prévias de estudantes em relação a conhecimentos básicos de astronomia, ligados à percepção e observação direta do céu. Três turmas de estudantes de 1ª série e uma turma de 3ª série do ensino integrado médio técnico da Educação Básica, Técnica e Tecnológica (EBTT) do CEFETMG Campus II - Belo Horizonte/MG foram submetidas a uma avaliação prévia através de questionário estruturado. Este questionário foi elaborado de forma a abordar a percepção dos estudantes em relação aos recursos gráficos (figuras e desenhos) representativos de conhecimentos básicos de astronomia, comuns em livros didáticos. Após a análise dos resultados desta avaliação, organizou-se uma estratégia de intervenção didática em sala de aula sobre o conteúdo de astronomia, utilizando-se de recursos de mediação baseados nas tecnologias da informação e comunicação. Os temas selecionados para esta estratégia didática foram relacionados aos assuntos básicos de astronomia em que ocorreu maior nível de desconhecimento dos estudantes. Os estudantes foram submetidos a avaliação posterior elaborada com os mesmos pressupostos da avaliação prévia. A análise dos resultados foi realizada a partir dos pressupostos da aprendizagem significativa (Ausubel; Novak e Hanesian, 1983). O ensino de astronomia por mediação das tecnologias da informação e comunicação indica uma alternativa preliminar aos trabalhos de campo usuais orientados na prática escolar, tais como, visita a planetários e a observatórios. Os estudantes ficaram muito sensibilizados pela possibilidade de percepção do céu em tempo real e à luz do dia dentro da sala de aula no contexto escolar. Os resultados deste levantamento preliminar indicam que os níveis de ensino fundamental e médio não foram capazes de internalizar conhecimentos básicos de astronomia, a despeito das orientações específicas contidas nos documentos oficiais da educação básica brasileira (Brasil, 1997 e 2000). Os estudantes pesquisados apresentaram conhecimentos e concepções rudimentares sobre o tema astronomia básica, indicando a ausência de abordagem do tema astronomia, tampouco de observação direta do céu em trabalhos de campo escolares na educação básica. Finalmente, esta abordagem didática suscitou nos estudantes grande interesse para futuros trabalhos de observação de campo. D.P. Ausubel; J.D. Novak; H. Hanesian. Psicología Educativa: un punto de vista cognoscitivo. México: Trillas, 1983. BRASIL. Secretaria de Educação Básica. Parâmetros Curriculares Nacionais: Ensino Fundamental (PCN), 1997, e Ensino Médio (PCNEM), 2000. Brasília. MEC/SEB.

Rosa, R. H. L.; Voelzke, M. R.

2014-08-01

302

Home before You Know It = De regres en casa en un dos por tres.  

ERIC Educational Resources Information Center

The arrival of a newborn requires a great deal of adjustment. Intended for new and expectant parents, this booklet and companion video provide practical advice and hands-on demonstrations of the essentials of mother and baby care, from birth to the first visit to the pediatrician. The first part of the booklet, which comes in both English- and…

Vida Health Communications, Inc., Cambridge, MA.

303

CONFIANZA Y DESCONFIANZA: DOS FACTORES NECESARIOS PARA EL DESARROLLO DE LA CONFIANZA SOCIAL  

Microsoft Academic Search

Recent investigations argue that distrust is the absence of trust and it would be assumed that both attitudes are independent; that would allow to distinguish between the naïve attitude and the wise attitude in the trust. It has been built a scale to measure the disposition to trust and the relationship has been examined among naïve and wise attitude when

RODRIGO YÁÑEZ GALLARDO; LUIS AHUMADA FIGUEROA

304

Descentralização da Educação Pública no Brasil: Trajetória dos Gastos e das Matrículas  

Microsoft Academic Search

Este trabalho analisa o processo de descentralização da educação pública no Brasil iniciado em meados da década de 1990. O ponto de partida é um resgate histórico da gestão da política educacional brasileira, fortemente ligada às transformações políticas e econômicas da história recente do país. Em seguida, o foco recai sobre o quadro institucional-legal e a estrutura de financiamento e

Jorge Abrahão de Castro; Bruno de Carvalho Duarte

2008-01-01

305

EVALUACIÓN COMPARATIVA DE HÍBRIDOS DE GIRASOL (Helianthus annus L.) EN DOS ZONAS PRODUCTORAS DE VENEZUELA  

Microsoft Academic Search

Sunflower (Helianthus annus L.) hybrids evaluation in two producing areas of Venezuela In the commercial sunflower sowing of Venezuela imported hybrid seeds are used, so the genetic materials have to be previously evaluated to know their performance in the growing zones. The purpose of this paper was to evaluate the hybrids MG2, MG4, EM787032, EM777364, EM776541, TRISOL 600, M742, and

Jesús Ávila; Antonio Díaz; Ramiro De La Cruz; Novis Moreno; Dimas Romero; Ramón Cáceres; Luis Gutiérrez; Régulo Flores

2007-01-01

306

Cirrosis biliar primaria: experiencia de trece años en dos centros de referencia .  

E-print Network

??Background: Primary biliary cirrhosis (PBC) is a chronic cholestatic disease, which can progress to hepatic failure. Aim: To study the clinical presentation, pathological features, treatment… (more)

Valera M., José Miguel

2006-01-01

307

McLeod-Hipel Time Series Package Notes Using DosBox  

E-print Network

available - http://www.dosbox.com/. Package Manual A. I. McLeod and K. W. Hipel (2002). The MHTS PC Package Reference Manual. 128 pages. This manual provides an overview of all the methods available in the package to get started. mount d d:\\mhts d: mts to close down DOSBox enter, > exit Graphic output may be saved

McLeod, Ian

308

Metathesis Cascade Strategies (ROM-RCM-CM): A DOS approach to Skeletally Diverse Sultams  

PubMed Central

The development of a ring-opening metathesis/ring-closing metathesis/cross metathesis (ROM-RCM-CM) cascade strategy to the synthesis of a diverse collection of bi- and tricyclic sultams is reported. In this study, functionalized sultam scaffolds derived from intramolecular Diels-Alder (IMDA) reactions undergo metathesis cascades to yield a collection tricyclic sultams. Additional appendage based diversity was achieved by utilizing a variety of CM partners. PMID:20161277

Jeon, Kyu Ok; Rayabarapu, Dinesh; Rolfe, Alan; Volp, Kelly; Omar, Iman

2009-01-01

309

Metathesis Cascade Strategies (ROM-RCM-CM): A DOS approach to Skeletally Diverse Sultams.  

PubMed

The development of a ring-opening metathesis/ring-closing metathesis/cross metathesis (ROM-RCM-CM) cascade strategy to the synthesis of a diverse collection of bi- and tricyclic sultams is reported. In this study, functionalized sultam scaffolds derived from intramolecular Diels-Alder (IMDA) reactions undergo metathesis cascades to yield a collection tricyclic sultams. Additional appendage based diversity was achieved by utilizing a variety of CM partners. PMID:20161277

Jeon, Kyu Ok; Rayabarapu, Dinesh; Rolfe, Alan; Volp, Kelly; Omar, Iman; Hanson, Paul R

2009-06-27

310

33 CFR 105.245 - Declaration of Security (DoS).  

Code of Federal Regulations, 2010 CFR

... COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MARITIME SECURITY MARITIME SECURITY: FACILITIES Facility Security Requirements... (b) At MARSEC Level 1, a facility receiving a cruise ship or a manned vessel carrying Certain...

2010-07-01

311

33 CFR 104.255 - Declaration of Security (DoS).  

Code of Federal Regulations, 2010 CFR

... COAST GUARD, DEPARTMENT OF HOMELAND SECURITY MARITIME SECURITY MARITIME SECURITY: VESSELS Vessel Security Requirements...VSO), or their designated representative, of any cruise ship or manned vessel carrying Certain...

2010-07-01

312

Unidad: Las influencias culturales en el arte mexicana (Unit: Cultural Influences in Mexican Art). Dos semanas.  

ERIC Educational Resources Information Center

This two-week unit, appropriate for bilingual education settings as well as foreign language programs, deals with the three primary cultural influences found in Mexican contemporary art. The multisensory materials, pragmatic focus, and direct creative student involvement are designed to make it a microcosmic, real-life experience. The first part…

Finere, Neal

313

A social media primer for professionals: digital dos and don'ts.  

PubMed

Social media sites have become powerful and important tools for health education, promotion, and communication activities as they have dramatically grown in popularity. Social media sites also offer many features that can be used for professional development and advancement. When used wisely and prudently, social media sites and platforms offer great potential for professional development by building and cultivating professional networks, as well as sharing information to increase one's recognition and improve one's reputation. They also provide a medium for increasing one's knowledge and awareness of timely news and trends by following important organizations, opinion leaders, and influential professionals. When used unwisely and imprudently, there is the potential to delay, damage, or even destroy one's professional and personal life. In this commentary, we offer recommendations for using Facebook, LinkedIn, and Twitter for professional development and caution against online behaviors that may have negative professional consequences. In summary, we believe that the strengths and benefits of social media for professional advancement and development far outweigh the risks and encourage health promotion professionals to properly engage these powerful tools. PMID:24396119

Bernhardt, Jay M; Alber, Julia; Gold, Robert S

2014-03-01

314

Agenda de dos das de capacitacin (Para uso del representante) Antes del curso Inscripcin  

E-print Network

transmisión alimentaria (8:30-9:15) (La seguridad de los alimentos: es nuestro negocio - Sección 1: Sepa la contaminación biológica (9:15-10:25) (La seguridad de los alimentos: es nuestro negocio - Sección 2: Prevención (10:25-10:40) 20 minutos Protección de los alimentos contra la contaminación física y química (10

315

Preventing DoS Attacks in Peer-to-Peer Media Streaming Systems  

Microsoft Academic Search

This paper presents a framework for preventing both selfi shness and denial-of-service attacks in peer-to-peer medi a streaming systems. Our framework, called Oversight, ach ieves prevention of these undesirable activities by run ning a separate peer-to-peer download rate enforcement protocol along with the underlying peer-to-peer media streaming protocol. This separate Oversight protocol enforces dow nload rate limitations on each participating

William Conner; Klara Nahrstedt; Indranil Gupta

2006-01-01

316

Laboratori de Sistemtica Humana El Laboratori de Sistemtica Humana est compost per dos grups de recerca  

E-print Network

: The Neurosciences and Music - IV - Learning and Memory». Psychomusicology: Music, Mind & Brain, 22(1), 1-4. -- Nadal://www.uib.es/depart/dfl/pts/index.html Màster en Cognició i Evolució Humana: http://postgrau.uib.cat/master/MCEH/ Doctorat en Cognició i Evolució Humana: http://postgrau.uib.cat/doctorat/DCEH/ #12;

Oro, Daniel

317

Laboratorio de Sistemtica Humana El Laboratorio de Sistemtica Humana est compuesto por dos grupos de investigacin  

E-print Network

, J. F. (2012). «Conference Report: The Neurosciences and Music - IV - Learning and Memory». Psychomusicology: Music, Mind & Brain, 22(1), 1-4. -- Nadal, M., Gálvez, A., Gomila, A. (2013) «A History://www.uib.es/depart/dfl/pts/index.html Máster en Cognición y Evolución Humana: http://postgrau.uib.cat/master/MCEH/ Doctorado en Cognición y

Oro, Daniel

318

Parto normal y cesarea: representaciones de mujeres que vivenciaron las dos experiencias  

Microsoft Academic Search

The delivery phenomenon has existed since the arisal of humankind and it represents the process finalling through which species perpetuation is guaranteed. This study aims at knowing the elements of social representation concerning the delivery under the perspectives of women living both natural delivery and caesarian section. This is a descriptive qualitative field research using the Social Representations Theory as

Denismar Borges de MirandaI; Fátima Cândida da Silva; Maria Eliane Liégio; Pedro Humberto de Faria

319

PROCEDIMENTOS PARA RECOLHIMENTO DE VALORES REFERENTES INSCRIO EM PROCESSOS SELETIVOS DOS CURSOS DE MESTRADO E DOUTORADO  

E-print Network

) 6) Competência: mês/ano do pagamento; 7) Vencimento: dia/mês/ano do pagamento; 8) CNPJ/CPF do interessado; 9) Nome do interessado; 12) Emitir GRU; 13) Imprimir; 14) Pagamento no Banco do Brasil em a impressão para posterior pagamento no Banco do Brasil. 4. Esta ordem de serviço entra em vigor a partir de

Paraná, Universidade Federal do

320

Da exacerbação dos sentidos no encontro com a natureza: contrastando esportes radicais e turismo de aventura  

Microsoft Academic Search

This article is a contribution to the understanding of risk-adventure as the set of practices that recuperate the positive dimension of risk. Based on a review of the literature and on the theoretical approach of Constructionist Discursive Psychology, it proposes a model for the analysis of the dimensions of risk adventure present in adventure tourism and radical sports: risk\\/danger, adrenaline,

Mary Jane P. Spink; Sérgio Seiji Aragaki; Marina Pigozzi Alves

2005-01-01

321

Da Exacerbação dos Sentidos no Encontro com a Natureza: Contrastando Esportes Radicais e Turismo de Aventura  

Microsoft Academic Search

This article is a contribution to the understanding of risk-adventure as the set of practices that recuperate the positive dimension of risk. Based on a review of the literature and on the theoretical approach of Constructionist Discursive Psychology, it proposes a model for the analysis of the dimensions of risk adventure present in adventure tourism and radical sports: risk\\/danger, adrenaline,

Mary Jane; P. Spink; Sérgio Seiji; Aragaki Marina; Pigozzi Alves

322

TURISMO Y DESARROLLO: DOS CONCEPTOS REVISITADOS Y UNA PRETENDIDA RELACIÓN CAUSAL  

Microsoft Academic Search

El autor del breve artículo que acabo de transcribir es Eduardo Fayos-Solá, sin duda uno de los turisperitos españoles más conocidos internacionalmente. Doctor en economía por la Universidad de Valencia, ha realizado estudios en universidades de USA (Minnesota) Reino Unido (Oxford) y Suecia (Estocolmo). Además de ser profesor titular de Economía Aplicada en la Universidad de Valencia, ha sido profesor

Francisco Muñoz de Escalona

2011-01-01

323

HÃBITOS DE COMPRA DOS CLIENTES DA FEIRA LIVRE DE ALFENAS-MG  

Microsoft Academic Search

The objective of this work was to study the consumer habits of street market customers in the municipality of Alfenas, Minas Gerais state. More specifically, the aim was to characterize the customers according to their social and economic status and purchasing habits and to identify the variables that determine their attendance in the street market. Cluster analysis was done to

Flavia Giolo de Carvalho; Eliane Garcia Rezende; Marcelo Lacerda de Rezende

2010-01-01

324

enero-marzo2008Cinvestav38 Muchas veces se ha odo decir que las dos grandes  

E-print Network

física del siglo pasado son la mecánica cuántica y la relatividad. Sin embargo, pareciera que estas revoluciones no han tenido gran impacto en nuestra vida cotidiana. En general es cierto que la mecánica

Rosas-Ortiz, Jose Oscar

325

A TEORIA DOS REFÚGIOS FLORESTAIS APLICADA AO ESTADO DE SÃO PAULO  

Microsoft Academic Search

The present study is indicated for the spread of the Forest Refuge's Theory, the physiology's appreciation of the scenery and bio- diversity existent understanding in the tropical forests of Sao Paulo State, after the re-drought climatic period. There was applied an interpretative method that aims to look for the epistemological foundation; about techniques that note the materialized evidences

Adler Guilherme Viadana; Agostinho Paul; Brito Cavalcanti

2007-01-01

326

Sobrepeso e Obesidade Infantil: Influências dos Hábitos Alimentares e da Prática de Atividade  

Microsoft Academic Search

This article is a review study about overweight and obesity and their relationship with the feeding habit and physical activity practice. The overweight and obesity are high prevalence deseases nowadays in developing countries, as well as in the developed ones. This case, specialy in young people, had been change the overweight and obesity in a Public Health problem, that can

Gilmar Mercês; Edmar Espírito Santo; Feira de Santana

327

Human skeletal remains of the ancient Maya in the caves of Dos Pilas, Guatemala  

E-print Network

This study focuses on the assessment of the depositional activity that occurred in six caves of the Petexbatun region of the Peten, Guatemala through a quantitative analysis of the human skeletal material recovered from them. Five of these caves...

Minjares, Amador, Jr.

2004-09-30

328

A Chain Reaction DoS Attack on 3G Networks: Analysis and Defenses  

E-print Network

@alcatel-lucent.com Abstract--The IP Multimedia Subsystem (IMS) is being de- ployed in the Third Generation (3G) networks since. I. INTRODUCTION The IP Multimedia Subsystem (IMS) is being deployed in the Third Generation (3G it supports many kinds of multimedia services. However, the security of IMS networks has not been fully

Zhu, Sencun

329

TÉCNICA E ÉTICA DA FOTOGRAFIA DO COMPORTAMENTO ANIMAL: DOS PIONEIROS À ERA DIGITAL  

Microsoft Academic Search

TECHNICAL AND ETHICS OF ANIMAL BEHAVIOR PHOTOGRAPHY: FROM PIONEER TO THE DIGITAL AGE. Photography is of extraordinary value to the study of animal behavior, as it enables capturing images of the animals in their natural habitat conditions with their behaviors. since the earliest ethological studies, the pioneers of behavioral science made use of photographic tools with expertise, and their finds

José Sabino

2009-01-01

330

Algunos aspectos ambientales y biologicos de dos potreros inundables de la Mixtequilla  

Microsoft Academic Search

Here, some environmental characteristics and bio- tic resources of two flooded grass lands (El Llane- te and don Rufino) from the Mixtequilla, in the State of Veracruz, are described. The environmental pro- perties of these grass lands change through alter- nation of floods and dry periods, consequently in- fluencing the development and behavior of the in- habiting organisms. Our studies

Facundo Rivera-Becerril; Martha Signoret-Poillon; Miguel A. Ayala-Zermeno; Patricia Castilla-Hernandez; Jaime Garc ´ õa-Mena; Teresa Mier; Mar ´ õa; Teresa Nunez-Cardona; Nancy Romero-Mart; Norma Sanchez-Santillan; Nancy C. Torres-Corona; Jose A. Viccon-Pale

331

Morfologia dos dentes do bicho-preguiça de coleira (Bradypus torquatus), Illiger, 1811  

Microsoft Academic Search

Tooth morphology of the maned sloth (Bradypus torquatus). The sloths are exclusively herbivores, feeding from leaves, flowers, sprouts, green stalks and fruits, just from two types of tree. The aim of this research was to

Eli Grassi; Rici Azarias

332

NASA Glen Steady-State Heat Pipe Code Users Manual, DOS Input. Version 2  

NASA Technical Reports Server (NTRS)

The heat pipe code LERCHP has been revised, corrected, and extended. New features include provisions for pipes with curvature and bends in "G" fields. Heat pipe limits are examined in detail and limit envelopes are shown for some sodium and lithium-filled heat pipes. Refluxing heat pipes and gas-loaded or variable conductance heat pipes were not considered.

Tower, Leonard K.

2000-01-01

333

“Entre Dos Mundos” (Between Two Worlds): Bicultural Skills Training with Latino Immigrant Families  

Microsoft Academic Search

This paper focuses on the acculturation model of second-culture-acquisition for Latino immigrants. Two theoretical frameworks,\\u000a assimilation and alternation theories, are compared within the acculturation model. Empirical research findings suggest that\\u000a assimilation is a risk factor for increases in negative health behaviors and mental health problems. Conversely, biculturalism\\u000a appears to be an emerging protective factor that buffers assimilation stress, enhances socio-cognitive

Martica L. Bacallao; Paul R. Smokowski

2005-01-01

334

Ensuring the relocatability of programs in the operational system DOS YeS  

NASA Technical Reports Server (NTRS)

Specific modifications in the Disk Operational System Unified Series to insure the relocatability of programs stored permanently in the core image library is described. A self-relocating method for loading programs into the working memory with re-editing all the programs recorded in the core image library is presented. The modified linkage editor can be included in a relocation dictionary containing data about each address constant at the assembly stage at the request of the programmer. The relocation dictionary increases the dimension of the RL-phase in comparison with the dimension of this same phase when edited by the standard method, making possible the creation of multiphase program complexes. Generation and use of the modified system using Assembly language is described. An example of the use of the system is given, and limitations of the use of the relocatable programs in the modified system are outlined.

Novoseltsev, S. K.; Orlov, I. G.; Chesalin, A. S.

1979-01-01

335

A program running under MS-DOS for the analysis of epidemiologic stratified or matched data.  

PubMed

Breslow and Day's method for computing the conditional likelihood of the logistic model in case of stratified samples requires, at each iteration the generation, for each stratum, of all the permutations of nc elements drawn from a total of nc + nt elements, where nc and nt are respectively the numbers of the cases and of the controls. This procedure rapidly proves costly in time as nc and nt increase, and also when nc and nt differ from one stratum to the next. The use of this technique on microcomputers is therefore limited. Presented here is an algorithm written in FORTRAN, based on a binary representation of the possible permutations, which readily permits the implementation of Breslow and Day's model on a microcomputer. PMID:2702811

Thalabard, J C; Plu-Bureau, G; Falissard, B

1989-03-01

336

O ACARO VETOR DA LEPROSE DOS CITROS (BREVIPALPUS PHOENICIS)E A INTERACAO COM ENDOSSIMBIONTES  

Technology Transfer Automated Retrieval System (TEKTRAN)

Citrus leprosis, caused by citrus leprosis virus (CiLV) and transmitted by Brevipalpus phoenicis (Geijskes) (Acari: Tenuipalpidae), is currently the most important viral disease affecting the culture in Brazil, causing significant yield and economical losses of millions of dollars annually for the c...

337

Resisting SYN Flood DoS Attacks with a SYN Cache  

Microsoft Academic Search

Machines that provide TCP services are often susceptibleto various types of Denial of Service attacks fromexternal hosts on the network. One particular type ofattack is known as a SYN flood, where external hostsattempt to overwhelm the server machine by sending aconstant stream of TCP connection requests, forcing theserver to allocate resources for each new connection untilall resources are exhausted. This

Jonathan Lemon

2002-01-01

338

"Being Present in the World": A Conversation with Professor Jose Marques dos Santos  

ERIC Educational Resources Information Center

The University of Porto was awarded the European University Information Systems (EUNIS) Elite Award for its innovative application of information technology to a European university. This university--nearly one hundred years old--is pressing hard, on a number of fronts, to place itself in the top rank of European universities. The Rector of the…

Katz, Richard N.; Dodds, Ted

2008-01-01

339

CONCEITO ATUAL NO TRATAMENTO DOS AMELOBLASTOMAS Current approaches to in the treatment of ameloblastomas  

Microsoft Academic Search

Ameloblastoma is an aggressive benign odontogenic tumor. The reason for this aggressive behavior is that this tumor is able to infiltrate the cancellous bone marrow spaces without showing radiological or macroscopic bone involvement, which leads to high rates of recurrence. Recurrence rates vary acoording to the different procedures used to treat the tumor, which range from simple enucleation to radical

Ana Cláudia; Amorim Gomes; Emanuel Dias de Oliveira; Millane Fabíola; Coutinho de Lira; Emanuel Sávio de Souza Andrade

340

VERIFICAÇÃO DOS SINAIS RADIOGRÁFICOS MAIS FREQÜENTES DA RELAÇÃO DO TERCEIRO MOLAR INFERIOR COM O CANAL  

Microsoft Academic Search

The purpose of this study was to evaluate the type and frequency of the radiographic signs of an intimate relationship between the lower third molar and the mandibular canal through the use of panoramic radiography. The sample comprised 31 lower third molars that radiologically presented an intimate relationship with the mandibular canal. For evaluation purposes panoramic radiographs and the classifications

Ana Cláudia; Amorim GOMES; Belmiro Cavalcanti; Egito VASCONCELOS; Emanuel DIAS de Oliveira; Daniela Guimarães de Melo

341

Estudo do Perfil-Tipo dos Doentes Internados na Unidade de Alcoologia do Porto  

Microsoft Academic Search

RESUMO Os autores efectuaram um estudo de natureza descritiva e explora- tória, durante seis meses, numa instituição pública de saúde, (Uni- dade de Alcoologia do Porto, I.D.T., I.P.), com o objectivo de definir o \\

JORGE COUTINHO; JOSÉ GASPAR DE ALMEIDA; MÓNICA SANTOS; RUI SILVA; CARLOS MARQUES; CRISTINA PAZ

2009-01-01

342

Caracterização e representação dos treinadores acerca da formação de treinadores de Voleibol em Portugal  

Microsoft Academic Search

The purpose of this study it was characterizing the profile of the trainer of Volleyball in Portugal and to inquire on the processes related with its coach education through the application of a questionnaire to 231 trainers. For its elaboration the questionnaire applied for Simão (1998) to Soccer coaches was considered and as referential, the bibliography of the specialty. Its

Rui Resende; Isabel Mesquita; Juan Fernández

343

PERFIL MORFOLÓGICO DOS MELHORES ATLETAS PAN-AMERICANOS DE HANDEBOL POR POSIÇÃO DE JOGO  

Microsoft Academic Search

The purpose of this study was to characterize the morphological variables, by game position (GP), of male athletes who participated on the X Pan-American Games in Team Handball (XPGTH) and also to analyse the very same variables of the best athletes by in relation to other athletes who played in the same GP. 103 athletes were measured, and the nacional

Maria Fátima Glaner

344

Educação física escolar: a transcendência dos jogos para a inovação de propostas pedagógicas  

Microsoft Academic Search

The present work has as pretension to tell and to present a program proposal based on the diagnosis and prognostic of action human beings whom they exceed by means of the repertoire of games known and constructed for the proper pupils under supervision and orientation of the professor. They had participated of the program, about 360 pupils of 5ª, 6ª

Vanderlei Palandrani Junior; Idico Luiz Pellegrinotti; Gerson Luis de Moraes; Martha Frigene; Vagner Roberto Bergamo

345

A evolução dos jogos de Física, a avaliação formativa e a prática reflexiva do professor  

Microsoft Academic Search

Este artigo analisa um processo reflexivo vivido ao longo de uma trajetória de desenvolvimento de jogos, sobre questões de Física, que foram criados por iniciativa de uma professora (MCF), em diferentes realidades do ensino médio. Duas fases foram identificadas: a primeira representou uma busca para tornar o ensino de física prazeroso; a segunda, sob influência da perspectiva teórica de Paul

Marli Cardoso Ferreira; Maria Orquiza de Carvalho

2004-01-01

346

Land disposal of San Luis drain sediments, Panoche Water District, South Dos Palos, California  

SciTech Connect

Lawrence Berkeley National Laboratory (LBNL), LFR Levine-Fricke (LFR), the U.S. Bureau of Reclamation (USBR) and the Panoche Water District, have completed a pilot-scale test of the viability of land application of selenium- (Se-) enriched San Luis Drain (SLD) sediments. The project was initiated in October 1998 by LBNL. LFR assumed the role of primary subcontractor on the project in July 2001. Substantial portions of this report, describing work performed prior to November 2000, were previously prepared by LBNL personnel. The data set, findings, and recommendations are herein updated with information collected since November 2000. Local land disposal is an attractive option due to its low cost and the proximity of large areas of available land. Two modes of disposal are being tested: (1) the application to a nearby SLD embankment, and (2) the application to and incorporation with nearby farm soils. The study of these options considers the key problems that may potentially arise from this approach. These include disturbance of SLD sediments during dredging, resulting in increased downstream Se concentrations; movement of the land-applied Se to groundwater; reduced productivity of farm crops; and Se uptake by wild and crop plants. This report describes field and laboratory activities carried out from 1998 through February 2002, and results of these investigations.

Zawislanski, Peter; Benson, Sally; TerBerg, Robert; Borglin, Sharon

2002-07-01

347

Urbano e rural: famílias multi-instaladas, mobilidade e manejo dos recursos de várzea na Amazônia  

Microsoft Academic Search

The Amazon rural populations, especially the river people or the caboclos who live in the large region of meadow, are often moving from one place to another. Due to the fragility of the river edges of the water streams, as well as the agricultural and agro forest areas, and because of uncertainty of lands and opportunities for work and market,

Novos Cadernos NAEA; Miguel Pinedo-Vasquez; Christine Padoch; Robin R. Sears; Eduardo S. Brondizio

348

Securing cloud infrastructure against co-resident DoS attacks using game theoretic defense mechanisms  

Microsoft Academic Search

Evolution in cloud services and infrastructure has been constantly reshaping the way we conduct business and provide services in our day to day lives. Tools and technologies created to improve such cloud services can also be used to impair them. By using generic tools like nmap, hping and wget, one can estimate the placement of virtual machines in a cloud

Harkeerat Singh Bedi; Sajjan Shiva

2012-01-01

349

DESARROLLO Y COMPLEJIDAD COMPUTACIONAL ¿DOS ELEMENTOS CLAVE PARA COMPRENDER LOS ORÍGENES DEL LENGUAJE?  

Microsoft Academic Search

In this paper an evolutionary scenario for the origins of the narrow faculty of language (as defined by Chomsky and others in their recent work) is presented, although putting special emphasis on a methodological distinc- tion between the emergence of this faculty and the development of complex grammatical systems. Thus, in a first step, I seek the possible precursors of

SERGIO BALARI

350

[10] S. V. Campos, E. M. Clarke, W. Marrero, M. Minea, and H. Hiraishi. Computing quantitative characteristics of finitestate realtime systems. In IEEE RealTime Systems Symposium, 1994.  

E-print Network

. In IEEE Real­Time Systems Symposium, 1993. [17] T. A. Henzinger, P. H. Ho, and H. Wong­Toi. Hy--427. Springer­Verlag, 1994. [12] E. M. Clarke and E. A. Emerson. Synthesis of synchronization skeletons­Verlag, 1981. Lecture Notes in Computer Science, volume 131. [13] E. M. Clarke, E. A. Emerson, and A. P. Sistla

Clarke, Edmund M.

351

Results of investigation at the Miravalles geothermal field, Costa Rica. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica; Parte 2, Muestreo de fluidos pozo abajo  

SciTech Connect

Samples of the geothermal fluids in the Miravalles, Costa Rica, geothermal system were collected from production wellbores using downhole fluid samplers, from flowing wellheads using miniseparators, and from hot springs that discharge in the area. The reservoir fluid at Miravalles is a neutral-chloride-type water, but fumaroles and acid-sulfate springs are present within the main thermal area, and there are bicarbonate-rich hot springs that are clearly related to the neutral-chloride reservoir fluids. Dissolved gases are primarily a mixture of CO{sub 2} with air, but samples collected in the fumarolic areas also contain H{sub 2}S. Water-stable isotope analyses suggest local meteoric recharge, and the reservoir fluid shows oxygen isotopic shifts of about 2.5% due to high-temperature oxygen exchange between water and rock. Chemical geothermometer temperatures are consistent with the measured downhole temperature of 220{degrees} to 255{degrees}C. This pattern of neutral-chloride reservoir fluids with acid-sulfate springs near the source region and bicarbonate-rich chloride hot springs at the periphery of the system suggests a lateral outflow type of hydrothermal system. In addition to the geochemical evidence, temperature profiles from several of the wells show temperature reversals that are characteristic of lateral outflow plumes. We find no evidence for the underlying, higher temperature (300{degrees}C) system, which has been suggested by other investigators. 24 refs., 14 figs., 6 tabs.

Grigsby, C.O.; Goff, F.; Trujillo, P.E. Jr.; Counce, D.A.; Dennis, B.; Kolar, J.; Corrales, R. (Los Alamos National Lab., NM (USA); Instituto Costarricense de Electricidad, San Jose (Costa Rica))

1989-10-01

352

Late Quaternary Araucaria forest, grassland (Campos), fire and climate dynamics, studied by high-resolution pollen, charcoal and multivariate analysis of the Cambará do Sul core in southern Brazil  

Microsoft Academic Search

Late Quaternary vegetation, fire and climate dynamics have been studied based on high-resolution dated pollen and charcoal samples and multivariate data analysis. The samples were taken from a 212-cm-long sediment core of a bog in the Cambará do Sul region on the highlands of northeastern Rio Grande do Sul State, Brazil. The records, including seven AMS radiocarbon dates, span 42?840

Hermann Behling; Valerio DePatta Pillar; László Orlóci; Soraia Girardi Bauermann

2004-01-01

353

Results of investigation at the Miravalles Geothermal Field, Costa Rica: Part 1, Well logging. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica: Parte 1, Registros de pozos  

SciTech Connect

The well-logging operations performed in the Miravalles Geothermal Field in Costa Rica were conducted during two separate field trips. The Phase I program provided the deployment of a suite of high-temperature borehole instruments, including the temperature/rabbit, fluid sampler, and three-arm caliper in Well PGM-3. These same tools were deployed in Well PGM-10 along with an additional survey run with a combination fluid velocity/temperature/pressure instrument used to measure thermodynamic properties under flowing well conditions. The Phase II program complemented Phase I with the suite of tools deployed in Wells PGM-5, PGM-11, and PGM-12. 4 refs., 25 figs., 1 tab.

Dennis, B.R.; Lawton, R.G.; Kolar, J.D.; Alvarado, A.

1989-03-01

354

Ionospheric Slab Thickness in the East Sector of South-America During One year of Low Solar Activity  

NASA Astrophysics Data System (ADS)

This paper reports the first results of equivalent ionospheric slab thickness estimated in the Brazilian longitudinal sector. The ionospheric slab thickness is a measure of the shape of the ionospheric profile and can be obtained from the ratio of the total electron content (TEC) to the F-region peak electron density (NmF2). The ionospheric slab thickness was studied during one year of low solar activity (from March 2009 to February 2010). The period analyzed were separated in three seasonal groups; Equinoxes, June solstice (winter) and December solstice (summer) months. The ionospheric slab thickness was studied at the equatorial station of Palmas (10.12 S, 48.21 W, 7.73 S dip lat) and in the low latitude station of Sao Jose dos Campos (23.07 S, 45.52 W, 19.61 S dip lat). The TEC data have been obtained from dual-frequency GPS receivers and the NmF2 data were calculated from the foF2 parameter scaled from ionograms recorded by simultaneous measurements of digital ionosondes. The minimum values of TEC and NmF2 were observed in both stations during the early morning and the maximum values during afternoon hours. The diurnal, seasonal and latitudinal variations of the ionopheric slab thickness were then analyzed. The thickness of the ionosphere increased during daytime if compared to the nighttime values. During the summer and the equinoctial periods the slab thickness reached the higher values if compared to those observed during the winter solstice months. The equatorial site of Palmas showed values of daytime slab thickness larger than those observed at the low-latitude station of Sao Jose dos Campos, except during the June solstice months. At Sao Jose dos Campos, a pronounced pre-dusk increase in the equivalent slab thickness is observed during the winter solstice months. From the calculated slab thickness we also estimated the atmospheric neutral temperature (Tn) over both stations. Other relevant aspects of the ionospheric slab thickness’ behavior will be presented and its comparison with atmospheric and ionospheric model results.

Silva, Marcelo Henrique Duarte; Muella, Marcio; Silva, Lidianne C. C.; De Abreu, Alessandro

355

On sopro do magnetar  

NASA Astrophysics Data System (ADS)

Magnetares sao estrelas de nêutrons com campos magnéticos acima do limiar quântico de 4,4´1013 G. Por causa desse intenso campo magnético, que exige período de rotação inicial da ordem de 1 ms, o torque eletromagnético é capaz de injetar 2´1052 erg, em menos de um dia, no Remanescente de Supernova (RSN) formado por ocasião da formação do magnetar. A energia injetada acelera a expansão do RSN, de modo que estimativas de idade do RSN feitas sem considerar a injeção de energia superestimarão a idade verdadeira. Além do cenário usual de formação de magnetares em colapsos gravitacionais de estrelas massivas, estudamos a possibilidade de formação dos mesmos através do Colapso Induzido por Acresção em anãs brancas. Estudamos, através de simulação numérica unidimensional, com diversas massas ejetadas e diversas densidades de meio interestelar local, as associações propostas entre candidatos a magnetar e RSNs, incluindo a injeção de energia. Concluímos que aproximadamente metade delas podem ser verdadeiras, e determinamos a faixa de velocidades e idades possíveis de cada associação. As incertezas observacionais a respeito do tamanho e densidade do meio interestelar local limitam a acurácia da análise.

Allen, M. P.; Horvath, J. E.

2003-08-01

356

Fisica a escala de Planck usando o principio de incerteza generalizado: efeitos nas flutuações primordiais e buracos negros  

NASA Astrophysics Data System (ADS)

Em escalas proximas à escala de Planck todas as teorias perturbativas de cordas produzem essenciamente a mesma relação de conmutação entre as coordenadas e impulsos (a chamada "álgebra deformada"), permitindo assim estudar a física resultante independentemente dos detalhes da teoria de cordas que seja considerada correta. Este resultado completamente geral, que inclui as interações gravitacionais junto com o resto dos campos pode ser considerada uma versão generalizada (GUP) do Princípio de Incerteza de Heisenberg. Aplicamos neste trabalho essas relações de conmutação para dois sistemas físicos bem definidos: buracos negros de massas próximas à massa de Planck, e flutuações quânticas em pequenas escalas antes do universo sofrer inflação. Obtemos dois resultados concretos dos efeitos do GUP : o primeiro é que o GUP impede a evaporação completa de buracos negros microscópicos na extensão do formalismo semiclássico, deixando assim remanescentes de pequena massa que já foram postulados como candidatos a matéria escura. O segundo resultado é o 'smoothing' das flutuações primordiais em pequenas escalas que levariam à produção de buracos negros primordiais após a inflação, impedindo assim a produção abundante destes últimos e predizendo abundancias atuais bem menores do que os limites disponíveis. Concluimos que, analogamente a utilização do Princípio de Incerteza de Heisenberg para estudar e determinar propriedades fundamentais das interações sem gravitação, o GUP e uma ferramenta poderosa para estudar uma ampla variedade de sistemas trans-Planckianos e predizer seu comportamento dispensando cálculos mais detalhados proprios da teoria quântica da gravitação.

Horvath, J. E.; Custódio, P. S.

2003-08-01

357

Contagem de fontes de radio na direção de aglomerados ricos de galaxias  

NASA Astrophysics Data System (ADS)

A contagem de fontes de rádio, na direção de aglomerados ricos de galáxias, deve fornecer uma distribuçãto acima da média do campo devido aos efeitos do meio. No entanto, a distribução de radiofontes de alguns aglomerados, investigada por vários autores no passado, mostrou, em alguns casos, uma deficência de fontes fracas. Neste trabalho, analisamos os levantamentos em 2.7 GHz (Reuter e Andernach 1990, 1990A&AS...82..279R; Loiseau et al. 1988, 1988A&AS...75...67L) e o catálogo 6CII em 151 MHz (Hales et al. 1988, 1988MNRAS.234..919H). Nosso estudio da distribução de radiofontes, na direção de aglomerados ricos de galáxias, nestas duas frequências, mostra um excesso de fontes fortes somente nas regiões centrais dos aglomerados. Este resultado pode ser explicado devido à evidência de confinamento das radiofontes pelo gás, do meio intra-aglomerado, e devido aos processos de colisão, coalescência e canibalismo de galáxias.

Andreazza, C. M.; Andernach, H.

358

Enhanced Electron Precipitation in Brazilian Magnetic Anomaly in association with Sudden Commencement  

NASA Astrophysics Data System (ADS)

Following the first satellite observations of enhanced particle flux in the region of the Brazilian Magnetic Anomaly1,2, various attempts have been made to detect effects associated with the precipitation of radiation belt particles over the region of this anomaly at balloon altitudes3. Since 1968 balloon observations of charged particles and X-rays have been made periodically at the Instituto de Pesquisas Espaciais at São José dos Campos, Brazil. During one of the flights on December 17, 1971, a moderate geomagnetic storm occurred when the balloon was floating at a ceiling altitude of ~3 mbar. Marked changes in the measured particle flux were observed in association with the changes in the magnetic field. As well as pointing out this correspondence we discuss the observational results in relation to observations made on April 6, 1972, during a magnetically quiet period. To our knowledge this is the first direct detection of particle precipitation in the magnetic anomaly at balloon altitudes.

Martin, I. M.; Rai, D. B.; da Costa, J. M.; Palmeira, R.; Trivedi, N. B.

1972-11-01

359

Study of atmospheric discharges caracteristics using with a standard video camera  

NASA Astrophysics Data System (ADS)

In this study is showed some preliminary statistics on lightning characteristics such as: flash multiplicity, number of ground contact points, formation of new and altered channels and presence of continuous current in the strokes that form the flash. The analysis is based on the images of a standard video camera (30 frames.s-1). The results obtained for some flashes will be compared to the images of a high-speed CCD camera (1000 frames.s-1). The camera observing site is located in São José dos Campos (23°S,46° W) at an altitude of 630m. This observational site has nearly 360° field of view at a height of 25m. It is possible to visualize distant thunderstorms occurring within a radius of 25km from the site. The room, situated over a metal structure, has water and power supplies, a telephone line and a small crane on the roof. KEY WORDS: Video images, Lightning, Multiplicity, Stroke.

Ferraz, E. C.; Saba, M. M. F.

360

Estudo de soluções locais e cosmológicas em teorias do tipo tensor-escalar  

NASA Astrophysics Data System (ADS)

Teorias do tipo tensor-escalar são a mais simples extensão possí vel da Relatividade Geral. Nessas teorias, cujo modelo padrão é a teoria de Brans-Dicke, a curvatura do espaço-tempo, descrita por componentes tensoriais, aparece acoplada a um campo escalar que, de certo modo, representa uma variação na constante de acoplamento da gravitação. Tais teorias apresentam soluções locais e cosmológicas que, em determinados limites, recaem nas apresentadas pela Relatividade Geral, mas que em outros limites trazem novidades, tais como conseqüências observacionais da evolução de flutuações primordiais distintas daquelas previstas pela Relatividade Geral (ver, por ex., Nagata et al., PRD 66, p. 103510 (2002)). Graças a esta possibilidade de trazer à luz novidades em relação à gravitação, teorias do tipo tensor-escalar podem ser vistas como um interessante campo alternativo de pesquisas para soluções dos problemas de massa faltante (ou escura) e/ou energia escura. Seguindo tal linha, este trabalho, ainda em sua fase inicial, apresenta soluções gerais de teorias do tipo tensor-escalar para diversas situações, verificando-se em que consiste a divergência dessas soluções dos casos tradicionais possí veis na Relatividade Geral. Como exemplos das soluções aqui apresentadas pode-se destacar uma expressão geral para diferentes soluções cosmológicas englobando diferentes tipos de matéria (representados por diferentes equações de estado), e a expressão para uma solução local representando um buraco negro com rotação, similar à solução de Kerr da Relatividade Geral. Por fim, é importante ressaltar que, embora aqui apresentem-se poucos resultados novos, na literatura sobre o assunto a maior parte das soluções apresentadas limita-se a uns poucos casos especí ficos, tal como soluções cosmológicas apenas com curvatura nula, e que mesmo as soluções disponí veis são, em geral, pouco divulgadas e, portanto, pouco conhecidas, e é tal situação que este trabalho busca, em parte, reverter.

Silva E Costa, S.

2003-08-01

361

Pgina Inicial Economia Tribolet: "Um conselho de ministros dois dias connosco ficava a perceber o pas" Ministrio dos Negcios  

E-print Network

nacional" Shot Ponto final: O que fará a cimeira... A revista norte-americana publicar mais uma... E os formação Por Ana Rita Guerra ShareShare Gosto 32 mil PUB ... 19/10/2012 | 17:20 | MOBILE | RSS TWITTER

Instituto de Sistemas e Robotica

362

Efeito da obesidade sobre a forÃa dos mÃsculos respiratÃrios e centro respiratÃrio.  

E-print Network

??Background: The obesity affects many organs and systems of human body, prejudicing vital functions by immunologic, circulatory, hormonal and respiratory functions. On the respiratory system,… (more)

Marcus AurÃlio Almeida da Rocha

2008-01-01

363

Finding Solutions for Effective Collaboration in a Heterogeneous Industrial Ismael H. F. dos Santos1,2  

E-print Network

and the associated mooring systems, computational fluid dynamics simulations for the stability of those systems artifacts (platforms, production risers, mooring systems, etc.), they usually have different data/CAE platform model usually have 3 million triangles while the mooring system have approximately 1 million

Barbosa, Alberto

364

Integração dos Ambientes Livres WEKA e ImageJ na Construção de Interfaces Guiadas por Sinais Visuais  

Microsoft Academic Search

WEKA and ImageJ are free-softwares, not well-known in Brazil, but that of- fer a great variety of resources for, respectivelly, machine learning and digital image processing algorithms implementations. The present work, besides presenting these packages, describes how they have been integrated to create two prototypes of systems with a humam-computer interface based on visual-input. Two differents ...

Hemerson Pistori; Mauro Conti Pereira

2004-01-01

365

ACORDO SOBRE A IMPLANTACIN DUN SISTEMA DE ADMISIN ADICIONAL PARA O ACCESO AO SISTEMA UNIVERSITARIO DE GALICIA DOS ESTUDANTES  

E-print Network

, a Secretaría General de Universidades do Ministerio de Educación, Cultura y Deporte, emitiu no mes de xaneiro Ministerio de Educación, Cultura e Deporte ditou, o pasado 1 #12;3 de abril do 2014, unha segunda "nota

Fraguela, Basilio B.

366

76 FR 58074 - 30-Day Notice of Proposed Information Collection: DS-7001 and DS-7005, DOS-Sponsored Academic...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Collection The Department of State collects this information to identify qualified candidates from Eurasia and South Central Asia for exchange activities sponsored by the Office of Academic Exchange Programs. Methodology Applications are...

2011-09-19

367

ROEDORES EN LA DIETA DE DOS AVES RAPACES NOCTURNAS (BUBO VIRGINIANUS Y TYTO ALBA) EN EL NORESTE DE DURANGO, MÉXICO  

Microsoft Academic Search

We studied the diet of two species of owls, and assessed the rodents communities and their relative densities from March 1996 through February 1997 in the Mapimí Biosphere Reserve, Durango, México: Great Horned Owl (Bubo virginianus) and Barn Owl (Tyto alba). The objectives were to understand the predator-prey relationships by comparing the availability and use of rodents by these owls.

Elizabeth E. ARAGÓN; Benjamín CASTILLO; Alfredo GARZA

368

Ions at the Water-oil Interface: Interfacial Tension of Electrolyte Alexandre P. dos Santos and Yan Levin*  

E-print Network

and dispersion interactions. However, kosmotropic (structure-making) anions as well as potassium and sodium ions. The theory is used to predict the interfacial tensions of six other potassium salts, for which behavior.1 The fact that there might be something fundamental missing from WOS theory was indicated

Levin, Yan

369

Diferencias biométricas entre dos poblaciones de Mirlo Acuático (Cinclus cinclus) en ambas vertientes de sierras del Sistema Central  

Microsoft Academic Search

En aquest treball es realitza una anàlisi de la biometria de la merla d'aigua en dues localitats del Sistema Central. S'analitzen les dades de 19 merles d'aigua de las Cruceras (altitud 880 m, Ávila) i 15 de Galíndez (altitud 1.060 m, Segovia). Els mascles de Galíndez van tenir una ala significativament més llarga que els de las Cruceras. No es

Alfonso Villarán; Juan Pascual-Parra; Eduardo T. Mezquida

2001-01-01

370

The Dos and Don'ts of how to Build a Planet, Using the Moon as an Example  

NASA Technical Reports Server (NTRS)

The bulk chemical compositions of planets may yield important clues concerning planetary origins. Failing that, bulk compositions are still important, in that they constrain calculation of planetary mineralogies and also constrain the petrogenesis of basaltic magmas. In the case of the Earth, there is little or no debate about the composition of the Earth's upper mantle. This is because our sample collections contain peridotitic xenoliths of that mantle. The most fertile of these are believed to have been little modified from their primary compositions. Using these samples and chondritic meteorites as a starting point, small perturbations on the compositions of existing samples allow useful reconstruction of the bulk silicate Earth (BSE). Elsewhere, I have argued that the next simplest case is the Eucrite Parent Body (EPB). Reconstructions based on Sc partitioning indicate that the EPB can be well approximated by a mixture of 20% eucrite and 80% equilibrium olivine. This leads to a parent body that is similar to CO (or devolatilized CM) chondrites. Partial melting experiments on CM chondrites confirm this model, because the residual solids in these experiments are dominated by olivine with minor pigonite [3]. The most difficult bodies to reconstruct are those that have undergone the most differentiation. Both the Moon and Mars may have passed through a magma ocean stage. In any event, lunar and martian basalts, unlike eucrites, were not derived from undifferentiated source regions. Reconstructions are primarily based on compositional trends within the basalts themselves with some critical assumptions: (i) Refractory lithophile elements (Ca, Al, REE, actinides) are presumed to be in chondritic relative abundances; and (ii) some major element ratio is believed to exist in a chondritic ratio (e.g., Mg/Si, Mg/Al). The most commonly used parameter is Mg/Si.

Jones, J. H.

2006-01-01

371

Caracterización histológica y ultraestructural de meningoencefalomielitis granulomatosa en dos perros Histological and ultrastructural characterization of granulomatous meningoencephalomyelitis in two dogs  

Microsoft Academic Search

Histological and ultrastructural characteristics of two dogs with granulomatous meningoencephalomy- elitis (GME) in Mexico are described. Case 1 corresponds to a 4-year-old female miniature poodle, and case 2 corresponds to a 10-year-old female akita. Case 1, in accordance with the clinical signs, distribution of lesions and histological characteristics, was found to be consistent with focal GME; case 2 was consistent

Elizabeth Morales Salinas; María de la Luz; Montaño Rosales; Xóchitl Zambrano Estrada

372

Einstein apaixonado: A cincia mal-contada de um mito bem-traado Carlos Alberto dos Santos  

E-print Network

"a nova teoria das ondas de luz de James Clerk Maxwell" e a controvérsia em torno da natureza da luz inapropriados acumulam-se ao longo do livro. Por exemplo, como é possível dizer que Maxwell "derivou quatro

dos Santos, C.A.

373

Publications of A. Spencer Tomb Cornejo, Xavier, H. H. Iltis , A. S. Tomb 2008. Anisocapparis y Monilicarpa: Dos  

E-print Network

in the Compositae. Tribe Lactuceae. Amer. J. Bot. 65: 717-721. Graham, A. and A. S. Tomb. 1977. Palynology morphology of tribe Lactaceae. Grana 15: 78-89. Niezgoda, C. J. and A. S. Tomb. 1975. Systematic palynology. Tomb. 1974. Palynology of the genus Erythrina (Leguminosae: Papilionoidae): a preliminary survey

Kaufman, Glennis A.

374

Protective Action Evaluator for Chemical Emergencies: A user's manual (MS-DOS reg sign Version 1. 0)  

SciTech Connect

The protective action evaluator for chemical emergencies (PAECE) is a package of computer programs developed to simulate an emergency response to airborne release of chemical agents. This user's manual documents the use of PAECE in the evaluation of chemical agent emergencies in areas potentially affected by the Chemical Stockpile Emergency Planning Program (CSEPP). This research documents the development and use of a method for the evaluation of protective action alternatives in conjunction with potential chemical agent emergencies. The user's manual highlights the development of the PAECE model, the selection of appropriate parameters to represent various scenarios, generate results and interpret them in the analysis of protective action alternatives during the planning and preparedness phases of the CSEPP. The PAECE model is designed to evaluate protective actions in the context of potential accidents, the emergency management systems required to implement protective actions, and the anticipated consequences for human receptors. The implications and uncertainties of the model are discussed to provide potential users with insight into the use, limitations, and uncertainties associated with evaluating the effectiveness of protective action alternatives. While PAECE represents a unique and powerful tool to evaluate protective actions, the user must exercise caution when interpreting the results to avoid misrepresentation. The expected value interpretation of the PAECE results biases the results toward extreme values. Hence, the PAECE results have to be interpreted in the context exposures similar to those represented by the unprotected exposure and the protection capacity that tend to be associated with people completing the implementation of the required actions later than and earlier than average, respectively. 16 refs., 24 figs., 1 tab. (JF)

Rogers, G.O.; Sharp, R.D.

1990-10-01

375

Uma Introdu\\c{c}\\~ao \\`a Teoria dos T\\'aquions (An Introduction to the Theory of Tachyons)  

E-print Network

The theory of relativity, which was proposed in the beginning of the 20th century, applies to particles and frames of reference whose velocity is smaller than the velocity of light. In this paper we will show how this theory can be extended to particles and frames of reference which move faster than light. A teoria da relatividade, proposta no in\\'icio do s\\'eculo XX, aplica-se \\`a part\\'iculas e referenciais cuja velocidade \\'e menor que a velocidade da luz. Nesse artigo mostraremos como esta teoria pode ser estendida \\`a part\\'iculas e referenciais que se movimentam mais rapidamente que a luz.

Vieira, Ricardo S

2011-01-01

376

Desconstrução da metafísica da linguagem e retradução dos capítulos 1, 2 e 3 do "Des Mots" de Leibniz.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Instituto de Letras, Departamento de Línguas Estrangeiras e Tradução, Programa de Pós-Graduação em Estudos da Tradução, 2014 À luz do pensamento… (more)

Silva, Juliana Cecci

2014-01-01

377

Evaluation of PTW Seven29 for tomotherapy patient-specific quality assurance and comparison with ScandiDos Delta4  

PubMed Central

For routine quality assurance of helical tomotherapy plans, an alternative method, as opposed to the TomoTherapy suggested cylindrical solid water phantom with film and ionization chamber, is proposed using the PTW Seven29 2D-ARRAY inserted in a dedicated octagonal phantom, called Octavius. First, the sensitivity of the array to pitch was studied by varying the pitch during planning to 0.287, 0.433, 1.0, and 2.0. For each pitch selected, the dependence on field size was investigated by generating plans with field widths (FWs) of 1.06 cm, 2.49 cm, and 5.02 cm, for a total of 12 plans. Secondly, a total of 15 patient QA plans were delivered using helical tomotherapy with the Delta4 and Seven29/Octavius for comparison. Using the clinical gamma criteria, 3% and 3 mm, all FW and pitch plans had a passing percentage of >90%. For patient QA plans, the average gamma pass percentage was 97.0% (94.4–99.8%) for the Delta4 and 97.6% (92.5-100.0%) for the Seven29/Octavius. Both the Seven29/Octavius and Delta4 performed to a high standard of measurement accuracy and had a 90% or greater gamma percent for all plans and were considered clinically acceptable. PMID:22557796

Myers, Pamela; Stathakis, Sotirios; Gutiérrez, Alonso N.; Esquivel, Carlos; Mavroidis, Panayiotis; Papanikolaou, Niko

2012-01-01

378

Buen Comienzo, Buen Futuro: El Bebe de Dos Meses (Healthy Start, Grow Smart: Your Two-Month-Old).  

ERIC Educational Resources Information Center

Distributed by the U.S. Departments of Agriculture, Education, and Health and Human Services, this Spanish-language pamphlet provides parents with information and advice about their infants in the second month of life. The pamphlet outlines typical infant behavior at 2 months of age, the need for regular visits to a physician, health insurance,…

Department of Education, Washington, DC.

379

Estimação da maturidade óssea utilizando dimensões dos centros de ossificação extraídas por SNAKES - modelos de contornos ativos  

Microsoft Academic Search

Skeletal age assessment is one of the important features in analyze of carpal radiography in the pediatric radiology area. Skeletal age can be assessed using a set of features extracted from the hand bones ossification centers. The methods most widely used for bone age determination presents high complexity degree for estimation and this task is extremely complex and time-consuming producing

C. J. Olivete; E. L. L. Rodrigues

380

Causas e Efeitos dos Desmatamentos na Amazônia: Uma análise a partir de dados orbitais, cartográficos e censitários  

Microsoft Academic Search

The Amazon region plays an instrumental role for the regional and global climatic balance. However, abundant natural resources, and in particular, the availability of land for agriculture and cattle ranching, have motivated, since the early 1970's, many occupation initiatives and a severe clear cutting of extensive forested areas. The first goal of this study was to understand the role of

Nilson Clementino Ferreira

381

Composição e atividades antioxidante e antimicrobiana dos óleos essenciais de cravo-da-índia, citronela e palmarosa  

Microsoft Academic Search

Composition and antioxidant and antimicrobial activities of clove, citronella and palmarosa essential oils. Antioxidant and antimicrobial activities, as well as the chemical composition of essential oils of clove (Caryophillus aromaticus L.), citronella (Cymbopogon winterianus) and palmarosa (Cymbopogon martinii) were studied. Antioxidant activity was evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) method and the antimicrobial activity determined by the microdilution method. The minimal inhibitory

R. SCHERER

382

A Probabilistic Attacker Model for Quantitative Verification of DoS Security Stylianos Basagiannis Panagiotis Katsaros Andrew Pombortsis  

E-print Network

is based on a probabilistic attacker model implementing simultaneous N zombie participants, which subvert attack tactics [3] that successfully incarnate simultaneous N zombie participants breaks the employed Do

Katsaros, Panagiotis

383

Os Imperativos Mundiais do Turismo: dos porta-vozes e Global Imperatives of Tourism: of spokespersons and  

E-print Network

/2013 EDI��O COMEMORATIVA - 40 ANOS DO CCSA 99 RESUMO A teoria da interdependência, que defende a transmissão ideal por ser, a uma só vez, um país do Sul, em tese mais facilmente atraído pelo discurso apologético discurso do que propriamente impostos, e que os Estados nacionais não são os atores mais influentes do

Paris-Sud XI, Université de

384

EFEITOS DO CPPU E DO ÁCIDO GIBERÉLICO NAS CARACTERÍSTICAS DOS CACHOS DA UVA DE MESA CENTENNIAL SEEDLESS  

Microsoft Academic Search

Two trials were conducted in a commercial vineyard, in the region of Jundiaí-SP, with the objective of studying the effects of CPPU and GA3 on the clusters and berries characteristics of Centennial Seedless table grape. In the first experiment, it was used CPPU at 0; 5.0; 7.5; 10.0; 12.5; 15.0 and 17.5mg.L -1 . In a second trial, GA3 was

ERASMO JOSÉ PAIOLI PIRES; RENATO VASCONCELOS BOTELHO; MAURILO MONTEIRO TERRA

385

A Novel Cloud Computing Security Model to Detect and Prevent DoS and DDoS Attack  

Microsoft Academic Search

Cloud computing has been considered as one of the crucial and emerging networking technology, which has been changed the architecture of computing in last few years. Despite the security concerns of protecting data or providing continuous service over cloud, many organisations are considering different types cloud services as potential solution for their business. We are researching on cloud computing security

Masudur Rahman; Wah Man Cheung

2014-01-01

386

Educação de língua inglesa e novos letramentos: espaços de mudanças por meio dos ensinos técnicos e tecnológicos.  

E-print Network

??The technical education and the technology/vocational education are at stake in government decisions and discussions. This research investigates the encounter between English language education and… (more)

Daniel de Mello Ferraz

2012-01-01

387

Dos ensayos sobre discriminación: discriminación salarial y discriminación en acceso al empleo por origen étnico y por género  

Microsoft Academic Search

El existencia o no de la discriminación en el mercado laboral ha sido un tema difícil de analizar. Comencemos por aclarar que para los propósitos de esta investigación, discriminación es un término que aplica a grupos claramente identificables por sus características físicas, religiosas, étnicas, por sus prácticas sociales, o por cualquier otro rasgo fácilmente observable1. En principio existe discriminación si

Jaime Tenjo Galarza; Paula Herrera Idárraga

2009-01-01

388

Hamartoma fibrolipomatoso e macrodistrofia lipomatosa: análise dos achados clínicos e de imagem em quatro casos, com revisão da literatura  

Microsoft Academic Search

O hamartoma fibrolipomatoso neural e a macrodistrofia lipomatosa são doenças raras, com achados de imagem característicos. Radiografias simples, estudos de ressonância magnética e prontuários médicos de quatro pacientes foram revisados. Em um paciente, foi realizada cirurgia com confirmação histopatológica. Em três pacientes, os achados clínicos e de imagem foram considerados suficientes para o diagnóstico. Descreve- mos dois casos de macrodistrofia

Rafael Darahem de Souza Coelho; Marcelo Novelino Simão; Clóvis Simão Trad

2002-01-01

389

Extração de batimetria por sensoriamento remoto de áreas rasas dos sistemas estuarinos do Estado do Paraná - Brasil  

Microsoft Academic Search

Satellite images offers, at low costs, bathymetric maps of areas that are difficult to cover for traditional hydrographic methods. In the north area of the Estuarine Complex of Paranaguá the last bathymetric update was made in the 50's, and in the inner part of the Guaratuba Bay there are no bathymetric data. A bathymetric mapping of these areas, even without

Lilian Anne Krug

2005-01-01

390

Estudo comparativo dos parâmetros angulares da marcha humana em ambiente aquático e terrestre em indivíduos hígidos adultos jovens  

Microsoft Academic Search

RESUMO Há um grande interesse em estudar o movimento humano den- tro da água, uma vez que o meio já é utilizado para treinamento e reabilitação devido às diferentes propriedades mecânicas que ofe- rece. No entanto, há uma carência de estudos sobre as caracterís- ticas biomecânicas do andar em ambiente aquático. O presente estudo teve como objetivo determinar as variáveis

Danieli Isabel Romanovitch Ribas; Vera Lúcia Israel; Elisângela Ferretti Manfra; Camila Costa de Araújo

2007-01-01

391

A Informalidade no Mercado de Trabalho e o Impacto das Instituições: Uma Análise sob a Ótica da Teoria dos Jogos  

Microsoft Academic Search

This article presents a game theoretic analysis of informality in the labor market based on an infinite dynamic game between employers and workers in which the Judiciary system enters parametrically. We find two classes of subgame-perfect Nash equilibria. In the first class, the worker first gets an informal contract but he eventually becomes a formal worker. We show that the

Maurício S. Bugarin

2008-01-01

392

Cornell Produces a Video of Safety Dos and Don'ts for the YouTube Set  

ERIC Educational Resources Information Center

Don't drink too much, download pirated files, light candles, or prop open doors. Warnings like those pervade the weighty work of admonition known as the student handbook. However, Allen J. Bova wonders, "Who ever reads that?" So Mr. Bova, director of risk management and insurance at Cornell University, tried to reach students with a video. This…

Lipka, Sara

2008-01-01

393

Analisando livros didáticos na perspectiva dos Estudos do Discurso: compartilhando reflexões e sugerindo uma agenda para a pesquisa  

Microsoft Academic Search

Resumo: Neste artigo, apÛs uma breve revisªo de pesquisas que tomam o livro didÆtico como objeto, delineamos os pressupostos teÛrico-metodolÛgicos de abordagens identificadas com os Estudos do Discurso e que tŒm fundamentado nossas investigaÁies sobre o livro didÆtico de ciŒncias. Em seguida, apresentamos nossas investigaÁies, que significam o livro didÆtico de ciŒncias em relaÁªo ‡s suas condiÁies sociais de produÁªo,

Isabel Martins

2006-01-01

394

The DOS 1 neutron dosimetry experiment at the HB-4-A key 7 surveillance site on the HFIR pressure vessel  

SciTech Connect

A comprehensive neutron dosimetry experiment was made at one of the prime surveillance sites at the High Flux Isotope Reactor (HFIR) pressure vessel to aid radiation embrittlement studies of the vessel and to benchmark neutron transport calculations. The thermal neutron flux at the key 7, position 5 site was found, from measurements of radioactivation of four cobalt wires and four silver wires, to be 2.4 {times} 10{sup 12} n{center_dot}m{sup {minus}2}{center_dot}s{sup {minus}1}. The thermal flux derived from two helium accumulation monitors was 2.3 {times} 10{sup 12} n{center_dot}m{sup {minus}2}{center_dot}{sup {minus}1}. The thermal flux estimated by neutron transport calculations was 3.7 {times} 10{sup 12} n{center_dot}m{sup {minus}2}s{sup {minus}1}. The fast flux, >1 MeV, determined from two nickel activation wires, was 1.5 {times} 10{sup 12} n{center_dot}m{sup {minus}2}{center_dot}s{sup {minus}1}, in keeping with values obtained earlier from stainless steel surveillance monitors and with a computed value of 1.2 {times} 10{sup 13} n{center_dot}m{sup {minus}2}{center_dot}{sup {minus}1}. The fast fluxes given by two reaction-product-type monitors, neptunium-237 and beryllium, were 2.6 {times} 10{sup 13} n{center_dot}m{sup {minus}2}{center_dot}s {sup {minus}1} and 2.2 {times} 10{sup 13} n{center_dot}m{sup {minus}2}s{sup {minus}1}, respectively. Follow-up experiments indicate that these latter high values of fast flux are reproducible but are false; they are due to the creation of greater levels of reaction products by photonuclear events induced by an exceptionally high ratio of gamma flux to fast neutron flux at the vessel.

Farrell, K.; Kam, F.B.; Baldwin, C.A. [and others

1994-01-01

395

UNIVERSIDADE FEDERAL DO PARAN -SETOR DE CINCIAS DA SADE SIBI -BIBLIOTECA DE CINCIAS DA SADE -SD  

E-print Network

de livros e livros. Antonio Carlos Ligocki Campos et al. Influence of bariatric surgery on circadian Campos et al. Complications of laparoscopic inguinal herniorrhaphy including one case of atypical Antonio Carlos Ligocki Campos et al Complications of laparoscopic inguinal herniorrhaphy including one

Paraná, Universidade Federal do

396

Inactivación de formas esporuladas de Bacillus subtilis mediante campos eléctricos pulsantes de alta intensidad en combinacion con otras tecnicas de conservacion de alimentos\\/Inactivation of Bacillus subtilis spores using high intensity pulsed electric fields in combination with other food conservation technologies  

Microsoft Academic Search

The inactivation of Bacillus subtilis spores using high intensity pulsed electric fields (HIPEF) was investigated. Spores were not inactivated when HIPEF treatment (60 kV\\/cm, 75 pulses) was used alone. The combination of-HIPEF and moderate temperatures around 60°C, and\\/or the activation of spore suspension prior to HIPEF treatment, and\\/or the use of up to 5000 IU\\/ml lysozyme, did not inactivate spores.

R. Pagán; S. Esplugas; M. M. Góngora-Nieto; G. V. Barbosa-Cánovas; B. G. Swanson

1998-01-01

397

Trends in Non-Volcanic Stratospheric Aerosol Determined from 30 Years of Aerosol Measurements by Lidar and Balloon-borne Particle Counters  

NASA Astrophysics Data System (ADS)

Junge's initial stratospheric aerosol measurements (1959-1960), at the end of a long volcanically quiescent period, and the long term stratospheric aerosol measurements beginning in the 1970s have been investigated for trends in non-volcanic stratospheric aerosol. These investigations have focused on the inter-volcanic "background" periods, which until post Pinatubo, have been rather brief. Since 1959 there have been approximately 30 eruptions with volcanic explosivity indices of 4 or more. The five 30 year records of stratospheric aerosol are comprised of one in situ record [aerosol concentration for 0.15 and 0.25 um radius particles above Laramie, Wyoming, USA (1971-2003, 41N)] and four lidar records [S. J. dos Campos, Brazil (1972-2003, 23S), Mauna Loa, Hawaii, USA (1974-2003, 20N), Hampton, Virginia, USA (1974-2002, 37N), Garmisch-Partenkirchen, Germany (1976-2002, 48N)]. These data capture the three major aerosol-producing eruptions, Fuego, El Chichón and Pinatubo, as well as the three inter-volcanic background periods. These records form the basis for an assessment of the trend in background stratospheric aerosol. The quantities to be investigated are integral number concentrations and integrated backscatter above the tropopause. These records were analyzed following two approaches. First the 3 volcanically quiescent periods are compared using a standard analysis of variance approach. Second an empirical model is used to remove the volcanic signal from the long term records and then the residuals are investigated for trends. The model is a parametric exponential decay model, requiring 4 parameters for each volcano and 2 parameters for background. The optimization procedure uses a priori estimates for each parameter and then standard squared-error residual minimization to obtain the set of parameters providing the minimum in the residuals. The baseline and autocorrelated residuals are then investigated for trend. The results suggest that the trend in background stratospheric aerosol is not significantly different than zero for S. J. dos Campos, Mauna Loa, and Garmisch, with a slight negative trend for the Hampton and Laramie data. This approach does not permit investigations of microphysical changes such as changing size distribtutions. This work forms part of the SPARC assessment of stratospheric aerosol.

Deshler, T.; Anderson-Sprecher, R.; Jäger, H.; Barnes, J.; Hofmann, D.; Clemesha, B.; Simonich, D.

2005-05-01

398

Estudo das tensões em dente restaurado com coroa metalocerâmica e dois formatos de retentores intra-radiculares - método dos elementos finitos.  

E-print Network

??O estudo comparativo da distribuição de tensões de von Mises em dente endodonticamente tratado, com dois formatos de retentores intra-radiculares, pré-fabricado cilíndrico/escalonado e fundido cônico,… (more)

Isaac José Peixoto Batinga da Rocha

2000-01-01

399

Utilização dos laboratórios de informática em escolas municipais de Passo Fundo\\/RS1 Use of Computer Labs in Schools of Passo Fundo\\/RS  

Microsoft Academic Search

This paper is a report on the experience achieved in a research that has been accomplished in ten schools of the teaching municipal network of Passo Fundo\\/RS. The purpose of that research was to verify, in the educative process dynamics, which were the reflections on the network technology usage by teachers and students. Before the actual research could be carried

Karina Marcon; Adriano Canabarro Teixeira

400

Is there intelligent life outside the City?A personal view on some of the dos, don'ts and elephant traps in freelance consultancy  

Microsoft Academic Search

Offers comprehensive advice to information professionals considering taking up self-employed freelance information consultancy. Draws attention to the risks associated with leaving the protection offered by corporate employment, alongside the benefits of empowerment through being self-employed. Emphasizes the need for prior business planning and offers advice on business name, web presence, logos, business cards, professional subscriptions, the need to have an

Oriole Newgass

2007-01-01

401

Neodymium, strontium and chromium isotopic studies of the LEW86010 and Angra dos Reis meteorites and the chronology of the angrite parent body  

NASA Technical Reports Server (NTRS)

Neodymium, stontium, and chromium isotopic studies of the LEW86010 angrite established its absolute age and the formation interval between its crystallization and condensation of Allende CAIs from the solar nebula. Pyroxene and phosphate were found to contain approximately 8% of its Sm and Nd inventory. A conventional Sm-147-Nd-143 isochron yielded an age of 4.53 +/- 0.04 Ga (2 sigma and Epsilon(sub Nd sup 143)) = 0.45 +/- 1.1. An Sm-146-Nd-142 isochron gives initial Sm-146/Sm-144 = 0.0076 +/- 0.0009 and Epsilon (sub Nd sup 142) = -2.5 +/- 0.4. The Rb-Sr analyses give initial Sr-87/Sr-86 Iota(sub Sr sup 87) = 0.698972 +/- 8 and 0.698970 +/- 18 for LEW and ADOR, respectively, relative to Sr-87/Sr-86 = 0.71025 for NBS987. The difference, Delta Iota(sub Sr Sup 87), between Iota (sub sr sup 87) for the angrites and literature values for Allende CAIs, corresponds to approximately Ma of growth in a solar nebula with a CI chondrite value of Rb-87/Sr-86 = 0.91, or approximately 5 Ma in a nebula with solar photospheric Rb-87/Sr-86 = 1.51. Excess Cr-53 from extinct Mn-53(t(sub 1/2) = 3.7 Ma)in LEW86010 corresponds to initial Mn-53/Mn-55 = 4.4 +/- 1.0 x 10(exp -5) for the inclusions as previously reported by the Paris group (Birck and Allegre, 1988). The Sm-146/Sm-144 value found for LEW86010 corresponds to solar system initial (Sm-146/Sm-144) = 0.0080 +/- 0.0009 for crystallization 8 Ma after Allende, the difference between Pb-Pb ages of angrites and Allende, or 0.0086 +/- 0.0009 for crystallation 18 Ma after Allende, using the Mn-Cr formation interval. The isotopic data are discussed in the context of a model in which an undifferentiated 'chondritic' parent body formed from the solar nebula approximately Ma after Allende CAIs and subsequently underwent differentiation accompanied by loss of volatiles. Parent bodies with Rb/Sr similar to that of CI, CM, or CO chondrites could satisfy the Cr and Sr isotopic systematics. If the angrite parent body had Rb/Sr similar to that of CV meteorites, it would have to form slightly later, approximately 2.6 Ma after the CAIs, to satisfy the Sr and CR isotopic systematics.

Nyquist, L. E.; Bansal, B.; Wiesmann, H.; Shih, C.-Y.

1994-01-01

402

DEPREDACIÓN DEL ÁGUILA MORA (GERANOAETUS MELANOLEUCUS) Y EL BÚHO (BUBO MAGELLANICUS) SOBRE EL CHINCHILLÓN (LAGIDIUM VISCACIA) EN DOS COLONIAS DEL NOROESTE DE PATAGONIA, ARGENTINA  

Microsoft Academic Search

Grey Eagle-buzzard (Geranoaetus melanoleucus) and Magellanic Horned Owl (Bubo magellanicus) predation on chinchillón (Lagidium viscacia) in northwestern Patagonia, Argentina. The chinchillón, Lagidium viscacia (Molina, 1782), is a medium-sized rodent which inhabits rocky habitats along the Andean Cordillera, from Peru to southern Argentina and Chile. Predators on this species are not well-known. Long-term studies re- cently made in Patagonia showed no

Gladys I. Galende; Ana Trejo

403

Plug in to the Utah Library Network, Reach Out to the World. Utah Library Network and Internet Training Handbook [for DOS]. Information Forum Publication #7.  

ERIC Educational Resources Information Center

This manual is designed to assist public libraries in Utah in their use of the Internet. Many of the examples used were created specifically to explain the use of products that the Utah Library Network provides for public libraries in Utah. The introduction provides background history and general information about the Internet and general…

Reinwand, Louis; And Others

404

Considerações a respeito da ansiedade em jovens atletas a partir dos estágios psicossociais do desenvolvimento Considerations about the anxiety in young athletes from stages of psychosocial development  

Microsoft Academic Search

This review aims to consider the process of structu ring the anxiety within the theory of Psychosocial Development Erik Erikson and discuss the issue of l imitation of the studies of anxiety in sports. Thus , it is understood that the mechanisms of anxiety in the sp orting context can influence the performance of athletes and therefore a methodology for

Robério Silva de Paiva; Thaísa Vilhena Silva

405

Anticorpos neutralizantes contra os vírus da cinomose e da parainfluenza em cães de canis dos municípios de Novo Hamburgo e Porto Alegre, RS, Brasil  

Microsoft Academic Search

In this report a serological survey was carried out in search for antibodies to canine distemper virus (CDV) and canine parainfluenza virus (CPIV) in 173 sera from dogs withdraw in kennels of the municipalities of Novo Hamburgo (n=82) and Porto Alegre (n=91), RS, Brazil. Neutralizing antibodies were evaluated against two CDV strains used for vaccine production (Rockborn and Snyder Hill)

Tamahine Larronda Schmidt Hartmann; Helena Beatriz de Carvalho Ruthner Batista; Diógenes Dezen; Fernando Rosado Spilki; Ana Claudia Franco; Paulo Michel Roehe

2007-01-01

406

Laboratory use of the personal computer: a program in MS-DOS BASIC, for generating specimen labels and data sheets for electron microscopy.  

PubMed

Conventionally, all specimen vial and block labels are handwritten or typed, a labor-intensive process open to human error, particularly in a lab that processes large numbers of samples. The computer program described in this report was developed to reduce or eliminate this problem. The program is menu-driven, asking specific information from the user, and runs on an IBM PC (or compatible). It is designed to accurately produce specimen collection vial labels, resin block labels, and data sheets for inclusion in a research notebook. A task that in the past may have required much time at the typewriter can now be accomplished without error in a few minutes. Although designed to fit the needs of a pathology laboratory, the program (written in BASIC) can be easily modified to fit other applications. PMID:3193242

Ulrich, R G

1988-09-01

407

A Educacao dos Portadores de Necessidades Especiais no Brasil no Periodo de 1910 a 1949 (Education of Those with Special Needs in Brazil from 1920 to 1949).  

ERIC Educational Resources Information Center

Examines education given to those with special needs in Brazil from 1910-1949. Shows the dichotomy of meanings in which the education of special needs persons during that period, besides being marked by concepts related to the exclusion paradigm, already indicated signs of respect for diversity and civil rights. (BT)

Marques, Carlos Alberto; Santiago, Mylene Cristina; de Moura, Simone Moreira

2000-01-01

408

Propagao das ondas martimas e dos tsunami CCADERNOADERNO BBRASILEIRORASILEIRO DEDE EENSINONSINO DEDE FFSICASICA,, VV. 22,. 22, NN. 2:. 2: PP. 190-215, 2005. 190-215, 2005  

E-print Network

matou 27.000 pessoas, feriu 9.000 pessoas, destruindo 13.000 casas (BRYANT, 2001). O maior tsunami já dezembro de 2004, vitimando cerca de 300.000 pessoas, infelizmente constituiu-se em apenas um novo evento 50.000 pessoas em Taiwan. Em 26 de agosto de 1882, como conseqüência da grande erupção do vulcão

dos Santos, C.A.

409

DIY TOP 10 DOS The more costly and extensive the plan, the more carefully you will have to manage time and resources to reach your destination  

E-print Network

to work off a sketch on a scrap of paper. Accurate calculation of materials required is essential won't require the level of investment in planning, tools, skills etc. you would need for a series the project the more chances there are for things to go awry. 4.3 FUTURE3PROOF YOUR PLANS Consider things you

Peters, Richard

410

Importância dos dados quantitativos na interpretação da cintilografia renal dinâmica com Tc99m-MAG3 e diurético na suspeita de obstrução do trato urinário.  

E-print Network

??Parâmetros renais quantitativos como depuração de Tc99m-MAG3, captação relativa, razão 20 minutos/máximo, razão 20 minutos/2-3 minutos, tempo de atividade máxima e tempo de eliminação decorrido… (more)

Angela Hunsche

2006-01-01

411

Avaliação do papel dos roedores das espécies Mus musculus e Rattus norvegicus como hospedeiros reservatórios de Leishmania infantum nos concelhos de Sesimbra e Sintra.  

E-print Network

??Dissertação de Mestrado Integrado em Medicina Veterinária A leishmaniose causada por Leishmania infantum é uma doença parasitária de cariz zoonótico transmitida por insectos flebotomíneos, os… (more)

Helhazar, Marcos Ferreira

2012-01-01

412

Realidade e ficção em Ilhéus - Bahia: o legado artístico de Jorge Amado na perspectiva dos Cursos Superiores de Turismo do seu entorno  

Microsoft Academic Search

The dialogue forms between the academy and the society determine the value that it has to the knowledge and its own social function. In this perspective, this paper search to diagnosis the problematic question about the tourism use the cultural goods as a estimated date for the valuation and promotion of a regional identity, focrising a study trying to identify

Astor Vieira Júnior; Urbano Cavalcante Filho; Wolney Gomes Almeida; Henrique da Costa Mata

413

Int. J. Security and Networks, Vol. 1, Nos. 3/4, 2006 167 Limiting DoS attacks during multihop data delivery  

E-print Network

a solution using one-way hash chains to protect end-to-end multihop communications in WSNs against such Path's Thomas J. Watson Research Centre in Hawthorne, NewYork from 1997­2001. He received a PhD in Electrical, medical systems and robotic exploration. Large sensor networks are often organised hierarchically via

Han, Richard Y.

414

Ocorrência sazonal e reprodução do socó-caranguejeiro Nyctanassa violacea no estuário da Lagoa dos Patos (RS, Brasil), novo limite sul da sua distribuição geográfica  

Microsoft Academic Search

Seasonal occurrence and breeding of the Yellow Crowned Night Heron Nyctanassa violacea in the Patos Lagoon estuary (RS, Brazil): the new southern geographic range of the species. The aim of this note is to report the seasonal occurrence and breeding of Nyctanassa violacea in the Patos Lagoon estuary, southern Brazil, its new southernmost area of occurrence. The Pólvora Island, located

Dimas Gianuca

415

THE EXPERIENCE OF THE LANDLESS WORKERS MOVEMENT AND THE LULA GOVERNMENT A EXPERIÊNCIA DO MOVIMENTO DOS TRABALHADORES SEM-TERRA E O  

Microsoft Academic Search

Based on fieldwork carried out in Southern Brazil, this article analyses the achievements, difficulties and contradictions of the MST's alternative project. It identifies the organizational structure of the MST as a major factor explaining the success of the movement. It highlights that mobilization and pressure on the state have also been instrumental to land distribution and the development of its

GOVERNO LULA

416

Clinical Awareness of Do’s and Don’ts of Cardiopulmonary Resuscitation (CPR) Among University Medical Students-A Questionnaire Study  

PubMed Central

Background: Medical students today are tomorrow’s future doctors. One of the key skills that students should develop during their graduation training is to be prepared for emergency life saving measures like cardiopulmonary resuscitation (CPR) anytime, anywhere. The students play integral role in learning, mastering and inculcating the most pragmatic clinical skill of CPR. Objectives: a) To evaluate the CPR awareness among undergraduate medical students. b) To screen the knowledge regarding accurate, effective CPR procedural techniques and various barriers of CPR failure in clinical practice from student perspective. c) To ascertain interest in CPR training programs and also inculcating CPR as an active part of clinical practice in future. Materials and Methods: The questionnaire comprised of three parts, first one dealing with general questions to know the importance of CPR in clinical practice, second one comprised of the main goal and accuracy of CPR intervention and the last segment consisted of questions targeting the indications, methods and effectiveness of CPR. Statistical Analysis: Descriptive statistics and multiple response analyses were done by using SPSS 17. Results: The students had good knowledge about the importance of CPR in clinical practice and stand average in knowing its indications and effectiveness. Whereas, only 1.2% of them were completely aware about the universal compression ventilation ratio, and 20.4% were aware of the current order of CPR being compression, airway and breathing. Conclusion: Though, CPR awareness is good among the students but skills of CPR have to be mastered by proper certified training programs at regular intervals and knowledge has to be updated with the changing trends in CPR. PMID:25177588

Amberkar, Mohan babu; Alur S, Suhas; Bhat, Pavan Madhukar; Bansal, Siddharth

2014-01-01

417

32 CFR Appendix C to Part 197 - Procedures for the Department of State (DoS) Foreign Relations of the United States (FRUS) Series  

Code of Federal Regulations, 2010 CFR

... MISCELLANEOUS HISTORICAL RESEARCH IN THE FILES OF THE OFFICE...documents selected for use in their research. (1) According to appendix...for the historians doing the research and an explicit description...supply the toner cartridge, paper, and other supplies...

2010-07-01

418

Título: O Comportamento dos Principais Índices de Preços da Economia Brasileira no Período 1999-2005: evidências da impropriedade do IGP como \\  

Microsoft Academic Search

The analysis presented in this article about the performance of the prices indexes of the Brazilian economy corroborates the hypothesis that the General Index of Price (IGP\\/FGV-RJ), considering its all modalities, became a biased index of Brazilian prices. In the period 1999-2005, the prices changes measured by the IGP were well above those accused by the other indexes of prices

José Roberto Ribeiro; Mário Ferreira Presser

419

EL BEOWULFO DE J.R.R. TOLKIEN Y EL BEOWULFO DE HEANEY: DOS PUNTOS DE INFLEXIÓN EN LA RECEPCIÓN DEL POEMA ÉPICO ANGLOSAJÓN  

Microsoft Academic Search

Beowulf is not only the one extant epic poem in Teutonic literature which is preserved complete but also the oldest. The reading of the poem is mediated by translation since the language in which it is written proves now to be incomprehensible to an English reader. Notwithstanding, Beowulf has been for decades a set text in English syllabuses. The purpose

Silvana N. Fernández

2002-01-01

420

How Do You Say "Twos" in Spanish, if "Two" Is "Dos"? Language as Means and Object in a Bilingual Kindergarten Classroom  

ERIC Educational Resources Information Center

In this essay Naomi Mulvihill uses vignettes from her bilingual kindergarten classroom to explore the dynamic processes by which young children make sense of language, focusing on instances in which she asks her students to compare texts presented in English and Spanish. Using Piaget's concept of disequilibrium as a guiding framework,…

Mulvihill, Naomi

2014-01-01

421

Passivo ambiental: estudo de caso da Petróleo Brasileiro S.A - Petrobrás. A repercussão ambiental nas demonstrações contábeis, em conseqüência dos acidentes ocorridos  

Microsoft Academic Search

Financial statements are very important for stockholders, investors, suppliers, funders and interested parties to know about the equity situation and result of a company, as well as how it relates to the environment, its commitment to nature and to current legislation. The absence of this information or the inexistence of its segregation can hide the impact of proactive or reactive

Ana Lúcia Bertoli; Maisa de Souza Ribeiro

2006-01-01

422

EFECTO DE LA FERTILIZACIÓN NITROGENADA SOBRE DOS VARIEDADES DE MAÍZ (Zea mays L.) SOMETIDAS A EXCESO DE HUMEDAD EN EL SUELO  

Microsoft Academic Search

N-Fertilization effect on two varieties of corn (Zea mays L.) affected by flooding After flood, during the vegetative stage, an N-fertilization effect was evaluated associated with the recovering of two varieties of maize Agua Blanca (AB) and La Máquina (LM). Crop was planted in 10 kg pots and placed in a greenhouse on a completely randomized design, with three replications.

Lenny Meléndez; Jon Lisazo; Ricardo Ramírez

2001-01-01

423

Epidemiologia dos fatores de risco para hipertensão arterial - uma revisão crítica da literatura brasileira The epidemiology of arterial hypertension risk factors - a critical review of the Brazilian literature  

Microsoft Academic Search

Hypertension contributes to the high cardiovascular mor- tality rates in the country as a whole. An essential step to the reduction of this important public health problem is the knowledge of the risk factors (RF) distribution. This review aims to present the prevalence of the more frequently stud- ied RF: obesity, diabetes, dyslipidemia, physical inactivity, smoking and alcohol abuse. The

Katia Vergetti Bloch; Claudia Soares Rodrigues; Roberto Fiszman

424

Dinâmica populacional de Melanoides tuberculatus (Müller, 1774) em um riacho impactado da Vila do Abraão, Ilha Grande, Angra dos Reis, RJ, Brasil.  

E-print Network

??Melanoides tuberculatus (Müller, 1774) é um gastrópode dulceaquícola de origem afroasiática, atualmente com uma distribuição cosmopolita, devido a seu comportamento invasivo. Utilizamos em nosso trabalho… (more)

Igor Christo Miyahira

2010-01-01

425

Impactos sócio-culturais da evolução dos jogos eletrônicos e ferramentas comunicacionais: um estudo sobre o desenvolvimento de comunidades virtuais de jogadores  

Microsoft Academic Search

This work studies the evolutionary process of electronic games, virtual communities and communicational tools and their impact on social interaction and culture. Additionally, an analysis is presented about different types of metacommunication developed in the communities formed by online games. Finally a conclusion is presented towards the future of those communities and the new communicational tools provided by technological advancement.

Lia Carrari; Rodrigues Rodrigo; A. S. Pereira; Lopes Pollyana; Notargiacomo Mustaro

426

A software oscilloscope for DOS computers with an integrated remote control for a video tape recorder. The assignment of acoustic events to behavioural observations.  

PubMed

With only a little knowledge of programming IBM compatible computers in Basic, it is possible to create a digital software oscilloscope with sampling rates up to 17 kHz (depending on the CPU- and bus-speed). The only additional hardware requirement is a common sound card compatible with the Soundblaster. The system presented in this paper is built to analyse the direction a flying bat is facing during sound emission. For this reason the system works with some additional hardware devices, in order to monitor video sequences at the computer screen, overlaid by an online oscillogram. Using an RS232-interface for a Panasonic video tape recorder both the oscillogram and the video tape recorder can be controlled simultaneously and moreover be analysed frame by frame. Not only acoustical events, but also APs, myograms, EEGs and other physiological data can be digitized and analysed in combination with the behavioural data of an experimental subject. PMID:8925649

Höller, P

1995-12-01

427

Evaluation of ultrasonic and ErCr:YSGG laser retrograde cavity preparation.  

PubMed

Root end cavity preparation techniques aim to create a clean and properly shaped cavity in a short time. Although the use of ultrasonics has been widely recommended, a laser can also be used. This study evaluated the time required and quality of retrograde cavity preparations using ultrasonics or ErCr:YSGG laser. Thirty single-rooted teeth were instrumented, root filled, submitted to apicectomies, and grouped. Root end cavities were prepared by using the following: group 1 (G1): CVD (6.1107-6) ultrasonic retrotips (CVD-Vale, São José dos Campos, Brazil); group 2 (G2): EMS (DT-060/Berutti) ultrasonic retrotips (EMS, LeSentier, Switzerland); and group 3 (G3): ErCr:YSGG (G6/Waterlase; Biolase Technology, San Clemente, CA) laser tips. The time taken to complete the preparation was recorded. Epoxy resin replicas of the root apices were examined under a scanning electron microscope. The parameters for evaluation were the presence of fractures, and the quality of the preparations. The Waterlase showed the highest mean time for preparation of the root end cavities (p < 0.05), and there was no significant difference between the CVD and EMS groups (p > 0.05). Fractures in the cavosurface angle occurred only in G2. G1 and G2 showed better scores for quality of preparation than G3 (p < 0.05). These results suggest that root end cavities should be prepared by ultrasonic tips. PMID:19410096

Batista de Faria-Junior, Norberto; Tanomaru-Filho, Mário; Guerreiro-Tanomaru, Juliane Maria; de Toledo Leonardo, Renato; Camargo Villela Berbert, Fábio Luiz

2009-05-01

428

Long distance entanglement mediated by gapped spin chains  

NASA Astrophysics Data System (ADS)

This talk will describe an analytical approach for the computation of Long Distance Entanglement (LDE) mediated through one-dimensional quantum spin chains recently found in numerical studies ootnotetextL. Campos Venuti, C. Degli Esposti Boschi and M. Roncaglia, Phys. Rev. Lett. 96 247206 (2006).. I review the formalism ootnotetextA. Ferreira and J. M. B. Lopes dos Santos, submitted for publication in APS pre-print: arXiv:0708.0320 (2007). that allows the computation of LDE for weakly interacting probes with gapped many-body systems and show that, at zero temperature, a DC response function determines the ability of the physical system to develop genuine quantum correlations between the probes. In the second part of the talk, I show that the biquadratic Heisenberg spin-1 chain is able to produce LDE in the thermodynamical limit and that the finite antiferromagnetic Heisenberg chain maximally entangles two spin-1/2 probes very far apart. This is of crucial importance since feasible mechanisms of entanglement extraction from real solid state systems and their ability to transfer entanglement between distant parties are essential ingredients for the implementation of Quantum Information protocols, such as teleportation or superdense coding.

Ferreira, Aires; Lopes Dos Santos, Joao

2008-03-01

429

Estimating the average length of hospitalization due to pneumonia: a fuzzy approach  

PubMed Central

Exposure to air pollutants is associated with hospitalizations due to pneumonia in children. We hypothesized the length of hospitalization due to pneumonia may be dependent on air pollutant concentrations. Therefore, we built a computational model using fuzzy logic tools to predict the mean time of hospitalization due to pneumonia in children living in São José dos Campos, SP, Brazil. The model was built with four inputs related to pollutant concentrations and effective temperature, and the output was related to the mean length of hospitalization. Each input had two membership functions and the output had four membership functions, generating 16 rules. The model was validated against real data, and a receiver operating characteristic (ROC) curve was constructed to evaluate model performance. The values predicted by the model were significantly correlated with real data. Sulfur dioxide and particulate matter significantly predicted the mean length of hospitalization in lags 0, 1, and 2. This model can contribute to the care provided to children with pneumonia. PMID:25296360

Nascimento, L.F.C.; Rizol, P.M.S.R.; Peneluppi, A.P.

2014-01-01

430

The effect of air pollutants on birth weight in medium-sized towns in the state of São Paulo?  

PubMed Central

OBJECTIVE: To investigate the effect of air pollution on birth weight in a medium-sized town in the State of São Paulo, Southeast Brazil. METHODS: Cross-sectional study using data from live births of mothers residing in São José dos Campos from 2005 to 2009. Data was obtained from the Department of Information and Computing of the Brazilian Unified Health System. Air pollutant data (PM10, SO2, and O3) and daily averages of their concentrations were obtained from the Environmental Sanitation & Technology Company. Statistical analysis was performed by linear and logistic regressions using the Excel and STATA v.7 software programs. RESULTS: Maternal exposure to air pollutants was not associated with low birth weight, with the exception of exposure to SO2 within the last month of pregnancy (OR=1.25; 95% CI=1.00-1.56). Maternal exposure to PM10 and SO2 during the last month of pregnancy led to lower weight at birth (0.28g and 3.15g, respectively) for each 1mg/m3 increase in the concentration of these pollutants, but without statistical significance. CONCLUSIONS: This study failed to identify a statistically significant association between the levels of air pollutants and birth weight, with the exception of exposure to SO2 within the last month of pregnancy. PMID:25510993

Santos, Veridiana de Paula; de Medeiros, Andréa Paula Peneluppi; de Lima, Thaiza Agostini Córdoba; Nascimento, Luiz Fernando Costa

2014-01-01

431

Characteristics of the sporadic sodium layers observed at 23 degree S  

SciTech Connect

The mesospheric sodium data, obtained between 1975 and 1987 at Sao Jose dos Campos (23{degree}S,46{degree}W) with a laser radar, have been analyzed in order to identify the appearance of thin sporadic sodium layers. In this search, a total of 65 events were identified. The average height of the peaks is 95.0 km. The ratio of the maximum peak density to the average layer density is normally 2.5 to 3.0, but values as high as 7 have been observed in the most outstanding cases. The events last from a few minutes to several hours, although durations of 1-2 hours are more typical. The events occur more often during periods of large meteor showers, especially in August. The diurnal variation shows an increasing number of observed peaks from 1500 LT to midnight and remains almost constant from midnight to 0600 LT. In 52 out of 54 days for which sodium and ionsonde data are available there was an sporadic E layer nearly coincident with the sodium cloud. The coincidence is good for short-lived sporadic layers, but a substantial increase in sporadic E critical and blanketing frequencies normally precedes the long-lasting and broader ones. These results are compatible with the suggestion that the enhanced layers are produced by the wind shear distortion of sodium clouds originating in meteor deposition, but the authors cannot rule out the possibility of an ion conversion mechanism.

Batista, P.P.; Clemesha, B.R.; Batista, I.S.; Simonieh, D.M. (Instituto de Pesquisas Espaciais, Sao Paulo (Brazil))

1989-11-01

432

A computational tool for ionosonde CADI's ionogram analysis  

NASA Astrophysics Data System (ADS)

The purpose of this work is to present a new computational tool for ionogram generated with a Canadian Advanced Digital Ionosonde (CADI). This new tool uses the fuzzy relation paradigm to identify the F trace and from this form extract the parameters foF2, h'F, and hpF2. The tool was very extensively tested with ionosondes that operate at low latitudes and near the equatorial region. The ionograms used in this work were recorded at São José dos Campos (23.2° S, 45.9° W; dip latitude 17.6° S) and Palmas (10.2° S, 48.2° W; dip latitude 5.5° S). These automatically extracted ionospheric parameters were compared with those obtained manually and a good agreement was found. The developed tool will greatly expedite and standardize ionogram processing. Therefore, this new tool will facilitate exchange of information among many groups that operate ionosondes of the CADI type, and will be very helpful for space weather purposes.

Pillat, Valdir Gil; Guimarães, Lamartine Nogueira Frutuoso; Fagundes, Paulo Roberto; da Silva, José Demísio Simões

2013-03-01

433

Automatic analysis, identification, and classification of Equatorial Spread-F in the ionograms  

NASA Astrophysics Data System (ADS)

F-region large-scale irregularities, also called plasma bubbles, are one of the most interesting equatorial ionospheric phenomena. These irregularities are generated in the equatorial region and afterwards extend to lower latitudes. They are one of the important topics of investigation of equatorial ionosphere electrodynamics and, therefore, are subject to intense theoretical and experimental research. The ionosonde is the most used scientific equipment to study the ionosphere and the F-region. Multiple echoes recorded on ionograms are the signature of these irregularities in the ionograms, usually called Spread-F. Spread-F is classified into three types: range, frequency, and mixed. Thus, automatic identification and classification of Spread- F is important in ionospheric studies, because studies usually involve the analysis and interpretation of large numbers of ionograms. The main objective of this paper is to present a new computational tool, based on fuzzy relation, designed to automatically identify and classify the occurrence of Spread-F in ionograms. The test was conducted in ionograms recorded in the Brazilian sector ((São José dos Campos (23.2(°) S, 45.9(°) W, dip latitude 17.6(°) S - low latitude) and Palmas (10.2(°) S, 48.2(°) W, dip latitude 5.5(°) S - near the magnetic equatorial)). The automatic identification and classification of Spread-F occurrence were compared with those obtained manually and good agreement was found.

Pillat, Valdir Gil; Fagundes, Paulo Roberto; Guimaraes, Lamartine N. F.

434

Micronucleus test and observation of nuclear alterations in erythrocytes of Nile tilapia exposed to waters affected by refinery effluent.  

PubMed

Micronuclei and nuclear alterations tests were performed on erythrocytes of Oreochromis niloticus (Perciformes, Cichlidae) in order to evaluate the water quality from Paraíba do Sul river, in an area affected by effluents from an oil shale processing plant, located in the city of São José dos Campos, Brazil-SP. Water samples were collected on 2004 May and August (dry season) and on 2004 November and 2005 January (rain season), in three distinct sites, comprising 12 samples. It was possible to detect substances of clastogenic and/or aneugenic potential, as well as cytotoxic substances, chiefly at the point corresponding to the drainage of oil shale plant wastes along the river. The highest incidence of micronuclei and nuclear alterations was detected during May and August, whereas the results obtained in November and January were insignificant. This work shows that the effluent treatment provided by the oil shale plant was not fully efficient to minimize the effect of cytotoxic and mutagenic substances in the test organism surveyed. PMID:16678473

da Silva Souza, Tatiana; Fontanetti, Carmem S

2006-06-16

435

B4. RESPUESTA DEL CULTIVO DE GYPSOPHILA (Gypsophila paniculata variedad New Love ) A LA IMPLEMENTACIÓN DE DOS FORMULACONES DE FERTIRRIEGO Y A LA IMPLEMENTACIÓN DE DOS COBERTURAS PLÁSTICAS. GUAYLLABAMBA - PICHINCHA * RESPONSE OF GYPSOPHILA (Gypsophila paniculata variedad New love) TO TWO FERTI-IRRIGATION FORMULATIONS AND TWO PLASTIC COVER S. GUAYLLABAMBA - PICHINCHA  

Microsoft Academic Search

SUMMARY The company Latinflor, located in Guayllabamba, Pichincha, was evaluated in two growing cycles response of gypsophila ( Gypsophila paniculata var. New Love) to two ferti-irrigation formulations (f 1= dynamic fertilization according to the phenologic stage of the plant (vegetative stage and productive stage ) and f 2= static fertilization currently used in the farm) and two plastic covers (c

Mónica Rocha; Arturo Orquera

436

Biología y ecología de Telenomus sp.(Hymenoptera: scelionidae) parasitoide de huevos de Opsiphanes cassina felder (Lepidoptera: nymphalidae: brassolinae) / Biological and ecology of Telenomus sp. (hymenoptera: scelionidae) parasitoid of eggs of Opsiphanes cassina felder. (Lepidoptera: nymphalidae: brassolinae).  

E-print Network

??Guarin Campo, Arnulfo (2010) Biología y ecología de Telenomus sp.(Hymenoptera: scelionidae) parasitoide de huevos de Opsiphanes cassina felder (Lepidoptera: nymphalidae: brassolinae) / Biological and ecology… (more)

Guarin Campo, Arnulfo

2010-01-01

437

Sexual selection on multivariate phenotypes in Anastrepha Fraterculus (Diptera: Tephritidae) from Argentina  

SciTech Connect

Despite the interest in applying environmentally friendly control methods such as sterile insect technique (SIT) against Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae), information about its biology, taxonomy, and behavior is still insufficient. To increase this information, the present study aims to evaluate the performance of wild flies under field cage conditions through the study of sexual competitiveness among males (sexual selection). A wild population from Horco Molle, Tucuman, Argentina was sampled. Mature virgin males and females were released into outdoor field cages to compete for mating. Morphometric analyses were applied to determine the relationship between the multivariate phenotype and copulatory success. Successful and unsuccessful males were measured for 8 traits: head width (HW), face width (FW), eye length (EL), thorax length (THL), wing length (WL), wing width (WW), femur length (FL), and tibia length (TIL). Combinations of different multivariate statistical methods and graphical analyses were used to evaluate sexual selection on male phenotype. The results indicated that wing width and thorax length would be the most probable targets of sexual selection. They describe a non-linear association between expected fitness and each of these 2 traits. This non-linear relation suggests that observed selection could maintain the diversity related to body size. (author) [Spanish] A pesar del interes por la aplicacion de metodos de control de bajo impacto ambiental sobre Anastrepha fraterculus (Diptera: Tephritidae), como la Tecnica del Insecto Esteril (TIE), no existe aun informacion suficiente sobre su biologia, taxonomia y comportamiento. Este trabajo tiene como objetivo evaluar el desempeno de moscas en jaulas de campo a traves del estudio de la competitividad sexual entre machos salvajes (seleccion sexual). Para ello, se muestreo una poblacion de Horco Molle, Tucuman (Argentina). En jaulas de campo se liberaron machos y hembras adultos virgenes para evaluar la competicion por el apareamiento. Se midieron ocho rasgos morfometricos en machos exitosos y no exitosos: ancho de la cabeza, ancho de la cara, largo del ojo, largo del torax, largo del ala, ancho del ala, largo del femur y largo de la tibia. Se realizaron analisis morfometricos para determinar la relacion entre el fenotipo multivariado y el exito copulatorio. Para evaluar la seleccion sexual sobre el fenotipo del macho se utilizaron diferentes combinaciones de metodos estadisticos multivariados y analisis graficos. Los resultados demostraron que el ancho de ala y el largo de torax serian los blancos mas probables de seleccion sexual, y describen una asociacion no lineal entre el exito copulatorio y cada uno de estos dos rasgos. Dicha asociacion sugiere que la seleccion observada mantendria la diversidad para el tamano del cuerpo. (author)

Sciurano, R.; Rodriguero, M.; Gomez Cendra, P.; Vilardi, J. [Depto. Ecologia, Genetica y Evolucion. Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA Buenos Aires (Argentina); Segura, D.; Cladera, J.L. [Instituto de Genetica, Instituto Nacional de Tecnologia Agropecuaria (Argentina); Allinghi, Armando [Comision Nacional de Energia Atomica (Argentina)

2007-03-15

438

Hydrogeology in North America: past and future  

NASA Astrophysics Data System (ADS)

This paper is a retrospective on the evolution of hydrogeology in North America over the past two centuries, and a brief speculation of its future. The history of hydrogeology is marked by developments in many different fields such as groundwater hydrology, soil mechanics, soil science, economic geology, petroleum engineering, structural geology, geochemistry, geophysics, marine geology, and more recently, ecology. The field has been enriched by the contributions of distinguished researchers from all these fields. At present, hydrogeology is in transition from a state of discovering new resources and exploiting them efficiently for maximum benefit, to one of judicious management of finite, interconnected resources that are vital for the sustenance of humans and other living things. The future of hydrogeology is likely to be dictated by the subtle balance with which the hydrological, erosional, and nutritional cycles function, and the decision of a technological society to either adapt to the constraints imposed by the balance, or to continue to exploit hydrogeological systems for maximum benefit. Although there is now a trend towards ecological and environmental awareness, human attitudes could change should large parts of the populated world be subjected to the stresses of droughts that last for many decades. Cet article est une rétrospective de l'évolution de l'hydrogéologie en Amérique du Nord sur les deux derniers siècles, et une brève évaluation de son futur. L'histoire de l'hydrogéologie est marquée par le développement de plusieurs techniques de terrain telles, l'hydrologie des eaux souterraines, la mécanique des sols, les sciences du sol, la géologie économique, l' ingénierie pétrolière, la géologie structurale, la géochimie, la géophysique, la géologie marine et plus récemment l'écologie. La science a été enrichie par la contribution de plusieurs chercheurs distingués, provenant de toutes ces branches. A présent, l'hydrogéologie est à la transition entre la volonté de découvrir de nouvelles ressources et l' exploitation la plus bénéfique au possible, et un management judicieux des ressources finies, interconnectées, qui sont vitales pour l' approvisionnement des hommes et autres formes de vie. Le futur de l' hydrogéologie sera dicté par la balance subtile dans laquelle intervient les cycles de l'hydrologie, de l'érosion, de la nutrition, et la décision d'une société technologique qui s'adapterait aux contraintes de la balance, ou qui continuerait d'exploiter les systèmes hydrologiques pour un bénéfice maximum. Par ailleurs il y a une nette tendance à inclure les aspects écologiques, les aspects environnementaux, et les changements humains qui pourraient être influencés par les modifications hydrogéologiques observées depuis une dizaine d'années. Este articulo es una retrospectiva sobre la evolución de la hidrogeología en Norte América en los pasados dos siglos, y una breve especulación de su futuro. La historia de la hidrogeología está marcada por desarrollos en muchos campos diferentes tal como hidrología de aguas subterráneas, mecánica de suelos, ciencia del suelo, geología económica, ingeniería del petróleo, geología estructural, geoquímica, geofísica, geología marina, y más recientemente, ecología. El campo se ha enriquecido por las contribuciones de investigadores distinguidos en todos esos campos. Actualmente, la hidrogeología se encuentra en transición de un estado de descubrir nuevos recursos y explotarlos eficientemente para un beneficio máximo, a un estado de gestión juiciosa de recursos finitos, interconectados, que son vitales para el sustento de humanos y otras cosas vivientes. El futuro de la hidrogeología posiblemente esté determinado por el balance sutil con el cual funcionan los ciclos nutricionales, erosionales e hidrológicos, y la decisión de una sociedad tecnológica para ya sea adaptarse a las restricciones impuestas por el balance o para continuar con la explotación de los sistemas hidrogeológicos para un benefici

Narasimhan, T. N.

2005-03-01

439

75 FR 68684 - Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model EMB-500 Airplanes  

Federal Register 2010, 2011, 2012, 2013, 2014

...Campos--SP, CEP: 12227-901--P.O. Box: 38/2, BRASIL, telephone: ++55 12 3927-5383; fax: ++55 12 3927-2610...Campos--SP, CEP: 12227-901--P.O. Box: 38/2, BRASIL, telephone: ++55 12 3927-5383; fax: ++55 12...

2010-11-09

440

On-Site Wastewater Treatment Systems: Septic Tank/Soil Absorption Field (Spanish)  

E-print Network

velocidad de la carga hidr?ulica es m?s baja en arcilla que en limo, y m?s baja en limo que en arena. Como los suelos arcillosos tienen una conductividad muy baja, s?lo los campos de drenaje no est?ndar se pueden usar en arcilla. Tama?o del campo de absorci...

Lesikar, Bruce J.; Enciso, Juan

2000-10-13

441

Homologia de Morse-Witten para complexos celulares  

Microsoft Academic Search

Forman definiu recentemente uma teoria de Morse discreta, baseada numa definicao de campo de vetores combinatorio em complexos celulares. Com a traducao dessa definicao em termos de hipergrafos orientados, mostrando a estrutura de camadas que isso induz no complexo celular, podemos calcular eficientemente campos de vetores gradientes quase-´otimos, no sentido de pos- suirem um numero pequeno de elementos cr´iticos. Alem

Thomas Lewiner

2005-01-01

442

REPRODUCTIVE SUCCESS OF EASTERN BLUEBIRDS (SIALA SIALIS) ON SUBURBAN GOLF COURSES  

E-print Network

://www.ucpressjournals. com/reprintInfo.asp. DOI: 10.1525/auk.2011.10182 �xito Reproductivo de Sialia sialis en Campos de GolfREPRODUCTIVE SUCCESS OF EASTERN BLUEBIRDS (SIALA SIALIS) ON SUBURBAN GOLF COURSES Resumen 2003­2009, medimos la reproducción de Siala sialis en campos de golf en Virgina y en ambientes

Swaddle, John

443

Preliminary analysis on faint luminous lightning events recorded by multiple high speed cameras  

NASA Astrophysics Data System (ADS)

The objective of this work is the study of some faint luminous events produced by lightning flashes that were recorded simultaneously by multiple high-speed cameras during the previous RAMMER (Automated Multi-camera Network for Monitoring and Study of Lightning) campaigns. The RAMMER network is composed by three fixed cameras and one mobile color camera separated by, in average, distances of 13 kilometers. They were located in the Paraiba Valley (in the cities of São José dos Campos and Caçapava), SP, Brazil, arranged in a quadrilateral shape, centered in São José dos Campos region. This configuration allowed RAMMER to see a thunderstorm from different angles, registering the same lightning flashes simultaneously by multiple cameras. Each RAMMER sensor is composed by a triggering system and a Phantom high-speed camera version 9.1, which is set to operate at a frame rate of 2,500 frames per second with a lens Nikkor (model AF-S DX 18-55 mm 1:3.5 - 5.6 G in the stationary sensors, and a lens model AF-S ED 24 mm - 1:1.4 in the mobile sensor). All videos were GPS (Global Positioning System) time stamped. For this work we used a data set collected in four RAMMER manual operation days in the campaign of 2012 and 2013. On Feb. 18th the data set is composed by 15 flashes recorded by two cameras and 4 flashes recorded by three cameras. On Feb. 19th a total of 5 flashes was registered by two cameras and 1 flash registered by three cameras. On Feb. 22th we obtained 4 flashes registered by two cameras. Finally, in March 6th two cameras recorded 2 flashes. The analysis in this study proposes an evaluation methodology for faint luminous lightning events, such as continuing current. Problems in the temporal measurement of the continuing current can generate some imprecisions during the optical analysis, therefore this work aim to evaluate the effects of distance in this parameter with this preliminary data set. In the cases that include the color camera we analyzed the RGB mode (red, green, blue) and compared them with the data provided by the black and white cameras for the same event and the influence of these parameters with the luminosity intensity of the flashes. Two peculiar cases presented, from the data obtained at one site, a stroke, some continuing current during the interval between the strokes and, then, a subsequent stroke; however, the other site showed that the subsequent stroke was in fact an M-component, since the continuing current had not vanished after its parent stroke. These events generated a dubious classification for the same event that was based only in a visual analysis with high-speed cameras and they were analyzed in this work.

Alves, J.; Saraiva, A. V.; Pinto, O.; Campos, L. Z.; Antunes, L.; Luz, E. S.; Medeiros, C.; Buzato, T. S.

2013-12-01

444

EMISSION OF OZONE IN THE VALE DO PARAÍBA REGION, IN SOUTHEASTERN BRAZIL, FOR THE YEAR 2007  

NASA Astrophysics Data System (ADS)

The city of São José dos Campos (São Paulo, Brazil) in recent years has shown strong growth and current increase in industrial economy, leading to a sharp urban development and consequent problems of air pollution. The ozone is a major greenhouse gas, present in the troposphere by photochemical reactions in natural emissions of anthropogenic and biogenic hydrocarbons such as volatile organic compounds and nitrogen oxides, which can come from lightning and soil. Due to the fact that this gas is considered the main pollutant responsible for poor air quality, the objective of this study was to characterize the behavior of the emission of ozone in the Vale do Paraíba region, in Southeastern Brazil, in association with meteorological parameters. Researches in this area are essential, because of the need for better knowledge on air quality at regional and global. The motivation for this study was based on the fact that the ozone near the surface can be considered a gas harmful to human and animal health, crops and forests as well of urban areas in general, besides being used as a major indicators of air quality by agencies of monitoring environment, such as the IPCC (Intergovernmental Panel on Climate Change), for example. This study is an initial analysis that will lead to a better understanding of chemical and physical processes that occur in the atmosphere of the city and region. Ozone and meteorological data were obtained from two locations in the city, known as INPE (23°12,04'S; 45°51,06'W) and UNIVAP (23°12,05'S; 45°57,02'W) during the year 2007. The ozone data were obtained every 15 minutes and converted in hourly and daily averages. In addition, were collected the maximum and minimum measure daily. The ozone showed similar behavior to temperature and irradiance for the period studied. In spring and summer there was an increase of ozone mixing ratio, which was produced photochemically during the increase of solar irradiance. Moreover, the periods of autumn and winter, which irradiance in São José dos Campos city is lower due to the combination between the inclination of the Earth rotation axis with the local latitude, presented a reduction in the gas mixture ratio. The daily average curves of the ozone and irradiance shown that there is a difference of approximately two hours between them. This behavior suggests that this is the time required for happen the photochemical reactions involving the production of ozone. The maximum values of ozone were observed at around 15 pm (local time), when occurred the maximum daytime temperature, increasing the production of gas compared to consumption reactions. In spring and summer (stations of higher temperatures), the daily average curve was proportional between ozone and temperature. The same relationship has not been observed in autumn and winter, because in such seasons the concentrations of ozone began to increase after the increase in temperature. Contrary to what was observed in UNIVAP, in the INPE, there were measures of the lower concentration of ozone, suggesting that perhaps this low concentration is not due the transport of ozone pollution for the region, but by the low intensity of the wind and also by higher humidity, which favors the consumption of ozone at site.

Dos Santos Zepka, A.; Sales, A. B.; Alvalá, P. C.

2009-12-01

445

PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones  

NASA Astrophysics Data System (ADS)

Entre las áreas hacia donde ha evolucionado la Química en los últimos años están los estudios de sistemas con especies reactivas de alta energía y los dominados por fuerzas intermoleculares débiles, con energías de unas pocas kcal/mol. En efecto, el estudio de las propiedades de los iones, comenzando por su relación con la molécula neutra de la que procede, la energía de ionización, los estados vibracionales y rotacionales, energías de enlace de Van der Waals entre el ión y una amplia variedad de otras moléculas, sus confórmeros o isómeros y sus reacciones o semi-reacciones químicas están en la raíz de la necesidad de la espectroscopía conocida como PFI-ZEKE, Pulsed Field Ionization-Zero Electron Kinetic Energy. Entre las aplicaciones que requieren estos conocimientos se encuentran la generación de plasmas para la fabricación de semiconductores, memorias magnéticas, etc, así como los sistemas astrofísicos, la ionosfera terrestre, etc. La espectroscopía ZEKE es una evolución de las de fluorescencia inducida por láser, LIF, ionización multifotónica acrecentada por resonancia, REMPI, con uno y dos colores y acoplada a un sistema de tiempo de vuelo, REMPI-TOF-MS, y las espectroscopías de doble resonancia IR-UV y UV-UV. Sus espectros y la ayuda de cálculos ab inicio permite determinar las energías de enlace de complejos de van der Waals en estados fundamental y excitados, identificar confórmeros e isómeros, obtener energías de ionización experimentales aproximadas (100 cm-1) y otras variables de interés. Al igual que con LIF, REMPI y dobles resonancias, es posible utilizar muestras gaseosas, pero los espectros están muy saturados de bandas y su interpretación es difícil o imposible. Se evitan estas dificultades estudiando las moléculas o complejos en expansiones supersónicas, donde la T de los grados de libertad solo alcanzan unos pocos K. Para realizar experimentos de ZEKE hay que utilizar una propiedad recientemente descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de ? s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y otras propiedades de interés, discutiendo sus resultados.

Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

446

Finite element analysis and fracture resistance testing of a new intraradicular post  

PubMed Central

Objectives The objective of the present study was to evaluate a prefabricated intraradicular threaded pure titanium post, designed and developed at the São José dos Campos School of Dentistry - UNESP, Brazil. This new post was designed to minimize stresses observed with prefabricated post systems and to improve cost-benefits. Material and methods Fracture resistance testing of the post/core/root complex, fracture analysis by microscopy and stress analysis by the finite element method were used for post evaluation. The following four prefabricated metal post systems were analyzed: group 1, experimental post; group 2, modification of the experimental post; group 3, Flexi Post, and group 4, Para Post. For the analysis of fracture resistance, 40 bovine teeth were randomly assigned to the four groups (n=10) and used for the fabrication of test specimens simulating the situation in the mouth. The test specimens were subjected to compressive strength testing until fracture in an EMIC universal testing machine. After fracture of the test specimens, their roots were sectioned and analyzed by microscopy. For the finite element method, specimens of the fracture resistance test were simulated by computer modeling to determine the stress distribution pattern in the post systems studied. Results The fracture test presented the following averages and standard deviation: G1 (45.63±8.77), G2 (49.98±7.08), G3 (43.84±5.52), G4 (47.61±7.23). Stress was homogenously distributed along the body of the intraradicular post in group 1, whereas high stress concentrations in certain regions were observed in the other groups. These stress concentrations in the body of the post induced the same stress concentration in root dentin. Conclusions The experimental post (original and modified versions) presented similar fracture resistance and better results in the stress analysis when compared with the commercial post systems tested (08/2008-PA/CEP). PMID:23032204

YAMAMOTO, Eron Toshio Colauto; PAGANI, Clovis; da SILVA, Eduardo Galera; NORITOMI, Pedro Yoshito; UEHARA, André Yugou; KEMMOKU, Daniel Takanori

2012-01-01

447

A Compact Monitoring System for Recording X-Rays, Gamma Rays and Neutrons Generated By Atmospheric Lightning Discharges and Other Natural Phenomena  

NASA Astrophysics Data System (ADS)

The generation of X-rays, gamma-rays and neutrons by atmospheric lightning discharges has been predicted by different researchers several decades ago. But only within the last 25 years the first experimental evidences of events relating the generation of these radiations with lightning have been made; since then there is a continuing effort to collect more information about this type of phenomenon. In this study we describe a compact monitoring system to detect simultaneously X-rays, gamma-rays and neutrons using rather inexpensive off-the-shelf commercial detectors (Micro Roengten Radiation Monitor, 8-inch gamma tube coupled to a 3x3 inch sodium iodide [Nai(Tl)] crystal, Ludlum He-3 neutron detector) and accompanying computer interfaces. The system is extremely portable and can be powered with small automotive batteries, if necessary. Measurements are performed at ground-level. Preliminary measurements have already yielded positive results, e.g., changes in the neutron flux related to a lightning discharge and varying weather conditions have been observed in the city of Sao Jose dos Campos, Brazil (23° 11? 11?S, 45° 52? 43? W, 600 m above sea level). This a pilot study, in the near future a larger number of these compact monitoring system will be installed in different location in order to increase the area coverage. Although the main objective of the study is to detect high-energy events produced by lightning discharges, the monitoring system will also be able to detect changes in the radiation background produced by other natural phenomena.

Martin, I. M.; Alves, M. A.

2009-12-01

448

Sao Paulo Lightning Mapping Array (SP-LMA): Deployment and Plans  

NASA Technical Reports Server (NTRS)

An 8-10 station Lightning Mapping Array (LMA) network is being deployed in the vicinity of Sao Paulo to create the SP-LMA for total lightning measurements in association with the international CHUVA [Cloud processes of tHe main precipitation systems in Brazil: A contribUtion to cloud resolVing modeling and to the GPM (GlobAl Precipitation Measurement)] field campaign. Besides supporting CHUVA science/mission objectives and the Sao Luz Paraitinga intensive operation period (IOP) in December 2011-January 2012, the SP-LMA will support the generation of unique proxy data for the Geostationary Lightning Mapper (GLM) and Advanced Baseline Imager (ABI), both sensors on the NOAA Geostationary Operational Environmental Satellite-R (GOES-R), presently under development and scheduled for a 2015 launch. The proxy data will be used to develop and validate operational algorithms so that they will be ready for use on "day1" following the launch of GOES-R. A preliminary survey of potential sites in the vicinity of Sao Paulo was conducted in December 2009 and January 2010, followed up by a detailed survey in July 2010, with initial network deployment scheduled for October 2010. However, due to a delay in the Sa Luz Paraitinga IOP, the SP-LMA will now be installed in July 2011 and operated for one year. Spacing between stations is on the order of 15-30 km, with the network "diameter" being on the order of 30-40 km, which provides good 3-D lightning mapping 150 km from the network center. Optionally, 1-3 additional stations may be deployed in the vicinity of Sa Jos dos Campos.

Bailey, J. C.; Carey, L. D.; Blakeslee, R. J.; Albrecht, R.; Morales, C. A.; Pinto, O., Jr.

2011-01-01

449

Grupos españoles de cálculos ab initio de moléculas de interés astrofísico  

NASA Astrophysics Data System (ADS)

Pocos campos de la química están tan bien adaptados a la modelización por medio de los métodos teóricos de la Química Cuántica como la Astroquímica y la Química de la Atmósfera, donde las interacciones moleculares son, generalmente, lo suficientemente pequeñas para que el modelo de molécula aislada funcione muy bien. En España son varios los grupos teóricos que dedican su esfuerzo de investigación, o parte de él, al estudio de moléculas o procesos de interés en Astrofísica o en atmósferas planetarias. Presentaremos diferentes ejemplos paradigmáticos de esta actividad en la que se exploran desde aspectos estructurales, hasta aspectos espectroscópicos y dinámicos. Entre los últimos, cabe destacar estudios en los que se demuestra la importancia de procesos a dos estados, prohibidos por espín, en la formación astrofísica de diversos derivados de interés. En el tratamiento espectroscópico se han hecho esfuerzos interesantes, que han aunado teoría y experimento, en el estudio de sistemas relevantes desde el punto de vista atmosférico, como los hidratos de ácido nítrico, o el tratamiento espectroscópico de moléculas no rígidas. No menos interesantes son los estudios de fotoabsorción de radicales o de procesos multifotónicos. Son particularmente abundantes los estudios dedicados a la reactividad específica de sistemas de interés astrofísico o atmosférico, con el objetivo de esclarecer vías de formación de determinados compuestos o de proporcionar mecanismos que permitan identificar las etapas reactivas limitantes de reacciones de interés en esos medios y sobre los que no existía información previa. Así, por ejemplo, se han publicado interesantes estudios sobre la formación o propiedades de compuestos de fósforo, de silico o de azufre o sobre mecanismos de reacción en los que intervienen el ozono, el radical nitrato, el radical OH u otras especies. Finalmente, son también particularmente relevantes los estudios que varios grupos españoles han llevado, y siguen llevando a cabo, sobre sistemas débilmente enlazados, como complejos de Van der Waals o complejos por enlace de hidrógeno, que sin duda juegan un papel importante tanto en medios atmosféricos como interestelares.

Yáñez, M.

450

Thermospheric neutral winds at low latitudes during the September-October 1986 Sundial campaign - Optical interferometer results  

NASA Astrophysics Data System (ADS)

Results of Fabry-Perot interferometer determinations of near-equatorial thermospheric temperatures and winds are presented for the late September and early October 1986 period. Measurements were made from Arequipa, Peru and Sao Jose dos Campos, Brazil. The thermospheric temperatures during the night at Sao Jose averaged 915 K, with a measurement uncertainty of + or - 75 K. At both Arequipa and Sao Jose, the meridional component of the thermospheric winds was generally poleward (southward) in the early night, became equatorward (northward) after about 21-22 h LT, reached a maximum velocity of about 40-100 m/s near local midnight, then decreased to zero and became poleward after about 02-03 h LT. The zonal wind component was eastward after about 19 h LT, reached a maximum of 100-150 m/s at about 22 h LT and decreased thereafter. Substantial day-to-day variability and convergence effects were seen in the Arequipa wind determinations. The poleward-equatorward-poleward change in the meridional wind component at the two stations agrees with the midnight pressure bulge model of Mayr et al. (1979), but the Sao Jose winds are about half the model values. The Arequipa meridional winds are consistent with the AE-E satellite results and mirror the behavior measured at Kwajalein Atoll during the 1977 solar minimum. The eastward zonal flow at both stations agrees in magnitude with the average of the DE satellite data, but only the Sao Jose data clearly exhibit the double-humped shape noted in the DE data.

Biondi, M. A.; Meriwether, J. W., Jr.; Sahai, Y.; Takahashi, H.

1990-06-01

451

Long-term trends observed in the middle atmosphere temperatures using ground based LIDARs and satellite borne measurements  

NASA Astrophysics Data System (ADS)

Long-term data available from Lidar systems located at three different locations namely São José dos Campos, Brazil (23.2° S, 45.8° W), Gadanki (13.5° N, 79.2° E) and Reunion (20.8° S, 55.5° E) have been used to investigate the long-term variations like Annual, Semi-annual, Quasi-biennial, El Nino Southern Oscillation and solar cycle. These oscillations are also extracted from simultaneous satellite borne measurements of HALogen Occultation Experiment (HALOE) instrument onboard UARS and SABER onboard TIMED over these stations making largest time series covering the entire middle atmosphere. A good agreement is found between the LIDAR and satellite-derived amplitudes and phases between 30 and 65 km altitude, which suggests that satellite measurements can be used to investigate the long-term trends globally. Latter measurements are extended to 80 km in order to further investigate these oscillations. Large difference in the amplitudes between the eastern pacific and western pacific is noticed in these oscillations. Changing from cooling trends in the stratosphere to warming trends in the mesosphere occurs more or less at altitude around 70 km altitude and this result agrees well with that observed by satellite measurements reported in the literature. The peak in the cooling trend does not occur at a fixed altitude in the stratosphere however maximum warming trend is observed around 75 km at all the stations. The observed long-term trends including various oscillations are compared with that reported with various techniques.

Kishore, P.; Venkat Ratnam, M.; Velicogna, I.; Sivakumar, V.; Bencherif, H.; Clemesha, B. R.; Simonich, D. M.; Batista, P. P.; Beig, G.

2014-03-01

452

Comparison of longevity between a laboratory strain and a natural population of Anastrepha Fraterculus (Diptera: Tephritidae) under field cage conditions  

SciTech Connect

The South American fruit fly Anastrepha fraterculus (Wiedemann) is one of the most destructive fruit pests in this region, infesting major fruit crops. Implementation of the sterile insect technique (SIT) as part of an area-wide integrated approach against this species requires information on the survival of mass-reared and sterilized insects in the field and their ability to mate with wild females. The survival rates in field cages of both non-irradiated and irradiated laboratory flies were compared with that of wild flies. Both types of laboratory flies survived longer than their wild counterparts over the 8 days under the experimental conditions. The irradiation dose (70 Gy) did not affect survival of the laboratory reared flies. Our results improve the prospect of integrating the SIT into the control of A. fraterculus populations in Argentina. (author) [Spanish] Anastrepha fraterculus (Wiedemann), la mosca sudamericana de la fruta, es una de las plagas mas destructivas en la region que infesta a los principales cultivos de frutas. La implementacion de la Tecnica del Insecto Esteril (TIE) como parte de un manejo integrado en areas extensivas contra esta especie requiere ensayos que demuestren que los insectos producidos en forma masiva y esterilizados son capaces de sobrevivir en el campo y aparearse con las hembras silvestres. Se comparo la supervivencia de individuos de una linea de laboratorio, tanto irradiados como no irradiados con la de individuos de una poblacion natural. Los dos tratamientos de moscas de laboratorio sobrevivieron mas tiempo que las salvajes durante los 8 dias y en las condiciones ensayadas. La dosis de radiacion (70 Gy.) no afecto la supervivencia de las moscas criadas en laboratorio. Nuestros resultados mejoran las perspectivas de integrar la TIE en el control de las poblaciones argentinas de A. fraterculus. (author)

Gomez Cendra, P.; Vilardi, J. [Depto. Ecologia, Genetica y Evolucion, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, (1428) Buenos Aires (Argentina); Segura, D.; Cladera, J. [Instituto de Genetica, INTA Castelar, CC25, (1712), Buenos Aires (Argentina); Allinghi, A. [Comision Nacional de Energia Atomica, CNEA, Buenos Aires (Argentina)

2007-03-15

453

The role of the traveling planetary wave ionospheric disturbances on the equatorial F region post-sunset height rise during the last extreme low solar activity and comparison with high solar activity  

NASA Astrophysics Data System (ADS)

This investigation studies traveling planetary wave ionospheric disturbance (TPWID) type oscillations on the modulation of the F region post-sunset height rise during the electric field pre-reversal enhancement (PRE). The studied period, from January 2009 to April 2010, occurred during the extremely low solar activity, when the averaged F10.7 was 73 [W/m2 Hz]. In addition, the results are compared with those for a high solar activity period of 2003. We present ionospheric sounding observations carried out near equatorial region (Palmas 10.2°S, 48.2°W, dip latitude 5.5°S) and low latitude region (São José dos Campos 23.2°S, 45.9°W, dip latitude 17.6°S; located under the southern crest of the equatorial ionospheric anomaly) in the Brazilian sector. The studies found that the magnitude of the electric field during PRE time and consequently the day-to-day variations of the F region virtual height at equatorial region and low latitude are modulated by waves with periods of around 3-4, 5-6, 10-15, and 24-35 days. The observations show that during low solar activity, the TPWID oscillations are lower than during high solar activity, but with the same amplitude around 200 km. The TPWID long period oscillations of around 27 days present very distinct characteristics at the equatorial region and low latitude, indicating that these regions are not directly connected. Our study also shows that the response to the TPWID short period of around 3-4, 5-6, and 10-15 days at the equatorial region and low latitude present very clear coupling during January-February, 2009, possibly due to the sudden stratospheric warming and TPWID mechanisms.

de Abreu, A. J.; Fagundes, P. R.; Bolzan, M. J. A.; de Jesus, R.; Pillat, V. G.; Abalde, J. R.; Lima, W. L. C.

2014-06-01

454

Response of equatorial, low-, mid- and high-latitude F-region in the American sector during the intense geomagnetic storm on 24 - 25 October 2011  

NASA Astrophysics Data System (ADS)

The main objective of this investigation is to study the ionospheric F region (in the equatorial, low-, mid- and high-latitude in the American sector) response induced by the intense geomagnetic storm that occurred on 24 - 25 October 2011. Simultaneous ionospheric sounding measurements (ionospheric parameters minimum F-region virtual height, hF, and F-region critical frequency, foF2) from five stations, viz., Puerto Rico (18.5N, 67.2W; dip latitude 26.5N; mid-latitude station), United States, Jicamarca (12.0S, 76.8W, dip latitude 0.13S; equatorial station), Peru, Palmas (10.2 S, 48.2 W; dip latitude 07.2S; a near-equatorial station), São José dos Campos (23.2 S, 45.9 W; dip latitude 19.1S; low-latitude station), Brazil, and Port Stanley (51.6S, 57.9W, dip latitude 31.5S; mid-latitude station), are presented for the days 23 (quiet), 24, 25 and 26/10/2011 (main and recovery phases). The complementary Global Positioning System (GPS) data available from 12 receiving stations in the equatorial, low-, mid- and high-latitude F region in the American sector have been used to obtain the measures of the Vertical Total Electron Content (VTEC) and rate of change of TEC per minute (phase fluctuation) on UT days 23, 24, 25 and 26 October 2011. For this event, four quiet day observations on 22, 23, 28 and 29/10/2011 around the storm event are used to calculate the average and standard deviations of ionospheric parameters (hF and foF2) and VTEC during the quiet period, for comparison with the observations during the disturbed period. Important features observed during this investigation will be presented and discussed.

de Jesus, R.; Sahai, Y.; Fagundes, P. R.; Abreu, A.; Brunini, C.; Gende, M.; Bittencourt, J. A.; Pillat, V. G.

2012-12-01

455

Detección y estudio mediante Fluorescencia Inducida por Láser de radicales libres formados por Disociación Multifotónica Infrarroja  

NASA Astrophysics Data System (ADS)

Una de las principales aplicaciones actuales de los procesos de disociación multifotónica inducidos por radiación láser infrarroja (DMI) es la producción de radiales libres, con el fin de estudiar sus propiedades cinéticas y espectroscópicas. La disociación de moléculas poliatómicas en el IR con láseres de CO2 tiene lugar desde la superficie de energía molecular mas baja y conduce generalmente a la formación de fragmentos en el estado electrónico fundamental, con diversos grados de excitación vibracional. En el Grupo de Procesos Multifotónicos del Instituto de Estructura de la Materia del C.S.I.C. hemos puesto a punto la técnica de Fluorescencia Inducida por Láser (LIF) para la detección y análisis en tiempo real de los fragmentos producidos en la DMI inducida mediante uno o dos campos láseres de diferentes longitudes de onda. Objetivos de nuestro trabajo han sido el estudio de los canales de disociación mayoritarios y de las especies transitoria producidas, así como de la distribución de energía interna con que éstas son generadas. En particular hemos detectado mediante LIF las especies: C2, CF, CH, SiH2, CF2, CH2, SiHCl, y CF3 a partir de la disociación de, entre otras, las siguientes moléculas: C2H3Br, C3F6, C4H8Si, C2H5ClSi y CH5ClSi. En este trabajo presentamos algunos de los resultados obtenidos mediante el estudio por LIF de estos radicales: estudio temporal de la señal LIF obtenida con determinación de tiempos de vida, espectros de excitación y fluorescencia, temperaturas vibracionales de formación, variación de la intensidad LIF con el tiempo de retraso entre los láseres de disociación y prueba, etc.

Santos, M.; Díaz, L.; Torresano, J. A.; Rubio, L.; Samoudi, B.

456

Sao Paulo Lightning Mapping Array (SP-LMA): Deployment, Operation and Initial Data Analysis  

NASA Technical Reports Server (NTRS)

An 8-10 station Lightning Mapping Array (LMA) network is being deployed in the vicinity of Sao Paulo to create the SP-LMA for total lightning measurements in association with the international CHUVA [Cloud processes of the main precipitation systems in Brazil: A contribution to cloud resolving modeling and to the GPM (Global Precipitation Measurement)] field campaign. Besides supporting CHUVA science/mission objectives and the Sao Luiz do Paraitinga intensive operation period (IOP) in November-December 2011, the SP-LMA will support the generation of unique proxy data for the Geostationary Lightning Mapper (GLM) and Advanced Baseline Imager (ABI), both sensors on the NOAA Geostationary Operational Environmental Satellite-R (GOES-R), presently under development and scheduled for a 2015 launch. The proxy data will be used to develop and validate operational algorithms so that they will be ready for use on "day1" following the launch of GOES-R. A preliminary survey of potential sites in the vicinity of Sao Paulo was conducted in December 2009 and January 2010, followed up by a detailed survey in July 2010, with initial network deployment scheduled for October 2010. However, due to a delay in the Sao Luiz do Paraitinga IOP, the SP-LMA will now be installed in July 2011 and operated for one year. Spacing between stations is on the order of 15-30 km, with the network "diameter" being on the order of 30-40 km, which provides good 3-D lightning mapping 150 km from the network center. Optionally, 1-3 additional stations may be deployed in the vicinity of Sao Jos dos Campos.

Blakeslee, R.; Bailey, J. C.; Carey, L. D.; Rudlosky, S.; Goodman, S. J.; Albrecht, R.; Morales, C. A.; Anseimo, E. M.; Pinto, O.

2012-01-01

457

Simulação de ejeções de massa coronal  

NASA Astrophysics Data System (ADS)

Ejeções de massa coronal (EMC) são bolhas gigantes de gás permeadas por campos magnéticos que são ejetadas do Sol durante um período de várias horas. Caso estas ejeções atinjam a Terra, geralmente, causam uma série de distúrbios às comunicações de longa distância e navegação, além de danos a satélites e transformadores. Portanto, é desejável que sejamos capazes de prever quando estas ejeções atingirão a Terra. Para tanto, é necessário um bom entendimento dos mecanismos causadores das ejeções e, principalmente, de como se dá a propagação das EMC e sua interação com o vento solar que permeia o meio interplanetário. Nesse sentido foi desenvolvido um programa computacional para resolver as equações MHD (Magneto-Hidro-Dinâmica) que regem a evolução das EMC. Primeiramente foram estabelecidas as condições necessárias para descrever o vento solar, no estado estacionário, que permeia todo o meio interplanetário. Num primeiro momento, resolveu-se o sistema de equações para o caso do vento isotérmico, conhecida como a solução de Parker, a fim de testarmos o modelo. Então, foi considerado o caso do vento solar com temperatura variável no meio interplanetário. Este resultado foi utilizado como a base de nosso sistema em seu instante inicial. Posteriormente foram feitas as considerações necessárias para descrever a propagação da Ejeção de Massa Coronal. As EMC foram simuladas como um aumento de densidade e temperatura local na coroa solar. A órbita e a posição da Terra foram incluídas no sistema. Os dados gerados possibilitaram uma análise da evolução da EMC pelo meio interplanetário até encontrar-se com a Terra. Os perfis de densidade e temperatura a 1 Unidade Astronômica são comparados com os dados de satélites reportados na literatura.

Corsini, M. A.; Silva, A. V. R.

2003-08-01

458

Uso da combinação dos anestésicos tiletamina e zolazepam na imobilização de Ctenomys lami (Rodentia-Ctenomyidae) no sul do Brasil Use of the anesthetic combination of tiletamine and zolazepam for immobilization of Ctenomys lami (Rodentia-Ctenomyidae) in southern Brazil  

Microsoft Academic Search

Studies about chemical contention are extremely important for wildlife animal's manipulation, to guaranty safety of it and the people who are manipulating them. Zoletil ® was used for contention of tuco-tucos (Ctenomys lami) captured in Rio Grande do Sul state (Brazil) between May and June of 2008. The dosage utilized was 8mg\\/kg by intramuscular injection. The induction time was 2,5±1,05min.

Gisele Guiomara Stein; José Francisco Bonini Stolz; Ingrid Vera Stein; Marina Estrázulas; Vanessa Lipp; Thales Renato; Ochotorena Freitas; André Silva Caríssimi

2009-01-01

459

CORPORAL COMPOSITION OF SWINE FEED FROM 10 TO 20 KG WITH DIETS CONTAINING DIFFERENT LEVELS OF LYSINE AND CRUDE PROTEIN Composição corporal de suínos alimentados dos 10 aos 20 kg com rações contendo diferentes níveis de lisina e proteína bruta  

Microsoft Academic Search

The aim of this work was to verify the effect of different levels of true digestible lysine (TDL) and crude protein (CP) on diets on the carcass composition of the swine in the nursery phase. Eighty piglets Landrace x Large White, barrows and females, with initial weight of 9.1±1.2 kg and final weight of 21.5±4.8 kg, weaned at the 28

Márcio Gilberto Zangeronimo; Elias Tadeu Fialho; Luis David; Solis Murgas; Raimundo Vicente de Sousa; José Augusto de Freitas; Níkolas de Oliveira Amaral

2009-01-01

460

Response of symptom dimensions in obsessive- compulsive disorder to treatment with citalopram or placebo Resposta das dimensões dos sintomas no transtorno obsessivo-compulsivo ao tratamento com citalopram ou placebo  

Microsoft Academic Search

Objective: There is increasing evidence that the symptoms of obsessive-compulsive disorder lie on discrete dimensions. Relatively little work has, however, explored the relationship between such factors and response to pharmacotherapy. Method: Data from a multi-site randomized placebo-controlled study of citalopram in obsessive-compulsive disorder were analyzed. Factor analysis of individual items and symptom categories of the Yale-Brown Obsessive-Compulsive Scale Checklist were

Dan J Stein; Elisabeth W Andersen; Kerstin Fredricson Overo

461

DIMED 86: Discurso dos Media e Ensino a Distancia = Discours des Media et Enseignement a Distance = Media Speech and Distance Teaching. Papers Presented at a Seminar (21st, Algarve, Portugal, March 10-15, 1986).  

ERIC Educational Resources Information Center

Presentations at this seminar on distance education focused on the different types of speech in multimedia presentations which contribute to the elaboration (simulated or substituted) of a situation involving different relationships. In addition to opening and closing remarks by Marcel de Greve and a final report by the Scientific Committee of…

Coelho, Maria Eduarda Leal

462

Ecossistema terra preta - recriar o que já foi criado A terra preta dos indios da Amazônia The Black Earth EcoSystem Recreating What Used to Exist: the Black Earth of the Amazon Indians  

Microsoft Academic Search

In 1542, the Spanish conquistador Francisco de Orellana led an expedition into the heart of the Amazon jungle. The Spanish were looking for El Dorado, the mythic civilization possessing indescribable treasures in the form of gold and silver that the Indians claimed existed within the dense forest (THE SECRET OF EL DORADO, 2006). When the conquistador Fernando Orellana returned from

Leonardo Fernando; Cruz Basso; Herbert Kimura

463

eVALUACIÓN De DoS eNSAYoS De eLISA IgM eN LA INVeSTIgACIÓN De UN BRoTe De LePToSPIRoSIS  

Microsoft Academic Search

Was assessed two rapid tests for serodiagnosis of acute leptospirosis, the ELISA IgM pool (Instituto Nacional de Salud, Lima), compared with a commercial ELISA IgM (PANBIO) against the gold standard microagglutination test (MAT). We examined 24 patients admitted to a hospital for investigation of a leptospirosis outbreak. It took two samples of serum, the first when they were hospitalized and

Manuel Céspedes; Lourdes Balda; Martha Glenny

464

Proceedings of the XIII International Symposium on Dynamic Problems of Mechanics (DINAME 2009), Almeida, C. A. (Editor), ABCM, Angra dos Reis, RJ , Brazil, March 2nd -March 6th, 2009  

E-print Network

of the problem. Keywords: nonlinear dynamics, stochastic dynamics, fluid-structure interaction, bit-rock conv = convergence function D = diameter, [m] E = Young Modulus, [Pa] f = force vector G = shearProceedings of the XIII International Symposium on Dynamic Problems of Mechanics (DINAME 2009

Boyer, Edmond

465

Un assemblage d'os grignoté par les rongeurs au Paléogène (Oligocène supérieur, phosphorites du Quercy)A bone assemblage gnawed by rodents in Palaeogene (Upper Oligocene, phosphorites of Quercy)  

NASA Astrophysics Data System (ADS)

Bone gnawing modifications by rodents at a large scale is a taphonomical feature usually found in Plio-Pleistocene assemblages. We report for the first time such a case within the 26-Myr-old karstic fissure filling assemblage of Pech-Desse (phosphorites of Quercy, Upper Oligocene, MP 28). A selection is observed on small ungulate long bones and other elements with a similar size. As predation evidences are also numerous on these taxa, and because some similar gnawed bones have been observed within the contemporaneous locality of Pech-du-Fraysse, we propose a secondary intervention of theridomyid rodents (maybe Archaeomys) on a carnivore laird.

Laudet, Frédéric; Fosse, Philippe

2001-08-01

466

Perfil da atividade de pesquisa publicada nos anais dos congressos brasileiros de pneumologia e tisiologia nos últimos vinte anos* Profile of research published in the annals of the Brazilian Pulmonology and Phthisiology Conferences held over the last twenty years  

Microsoft Academic Search

Objective: To increase the knowledge base regarding pulmonology research in Brazil. Methods: A retrospective, observational study of the abstracts published in the Annals of the Brazilian Pulmonology and Phthisiology Conferences held from 1986 to 2004, quantifying the institutions of origin by geographic distribution and type, as well as categorizing the abstracts by study design and topic. Results: A total of

ALEXANDRE TODOROVIC FABRO; HYUNG BOK YOO; HELENA ABRAHÃO; THOMAZ QUELUZ

2006-01-01

467

Prevalência e prognóstico dos pacientes com pneumonia associada à ventilação mecânica em um hospital universitário* Prevalence of ventilator-associated pneumonia in a university hospital and prognosis for the patients affected  

Microsoft Academic Search

Objective: To determine the prevalence of ventilator-associated pneumonia in an intensive care unit, as well as to identify related factors and characterize patient evolution. Methods: This study evaluated 278 patients on mechanical ventilation for more than 24 hours in a university hospital. Results: Ventilator-associated pneumonia developed in 38.1% of the patients, translating to 35.7 cases\\/1000 ventilator- days: 45.3% were caused

MÁRCIO MARTINS DE QUEIROZ; JOSÉ RODOLFO ROCCO

2006-01-01

468

Análise comparativa e teste empírico da validade dos modelos CAPM tradicional e condicional: o caso das ações da Petrobrás Comparative analysis and empiric test of the validity of tradicional CAPM model: the case of Petrobrás shares  

Microsoft Academic Search

The objective of this article is to do a comparative analysis of traditional and conditional CAPM models and to test their validity using Petrobras preferential shares. The used methodology was the one of esteeming the model firstly traditional CAPM, through the method of the ordinary Minima square and, afterwards considered the conditional model, also called GARCH-M. In both models the

Janaína da Silva Alves

469

O USO DE MÁSCARA CONTRA GASES NA DETERMINAÇÃO DOS TESTES DE VELOCIDADE CRÍTICA, 12 MINUTOS, WINGATE E RAST The influence of full face mask use on critical velocity, 12 minute run, Wingate and RAST tests assessments  

Microsoft Academic Search

The use of gas mask to protect the body has increased amongst the population from airborne pollutants and toxic materials. This equipment is used mainly by fireman and military in their training.Yet, response of the gas mask use over physical aptitudes has been hardly studied so far. The aim of this study was to verify the effect of gas mask

Alessandro Moura Zagatto; Washington da Silva Cavalcante; Wescley Moreira de Moraes

470

Investigação dos efeitos de substâncias liberadas por materiais utilizados no tratamento da Hipersensibilidade Dentinária (Gluma e Biovidro), associados ou não à laser fototerapia, na proliferação e diferenciação de células mesenquimais de polpa dentária humana.  

E-print Network

??A incidência da hipersensibilidade dentinária (HD) tem aumentado. Agentes dessensibilizantes como o Gluma Desensitizer® (Heraeus), ou os Biovidros, bem como tratamentos considerados bioestimuladores como a… (more)

Talita Christine Camilo Lopez

2013-01-01

471

PERFIL DOS INDIVÍDUOS COM DIABETES MELITO QUE SOFRERAM AMPUTAÇÕES NA REGIÃO DO VALE DO SINOS\\/RS PROFILE OF THE INDIVIDUALS WITH DIABETES MELLITUS WHO SUFFERED AMPUTATIONS ON THE REGION OF THE VALE DO SINOS\\/RS  

Microsoft Academic Search

This study aimed to know the profile of the patients with Diabetes Mellitus (DM) who were submitted to an amputation surgery and who were hospitalized in a Public Hospital of the Vale do Sinos, South of Brazil. Was performed a retrospective surgery from fourteen charts of adults patients with DM from data such as age, ethnic group, gender, presence of

Josiane Borchardt; Marina Carolina Moreira; Rejane Giacomelli Tavares; Daiane Bolzan Berlese

472

Intervenção visando a auto-estima e qualidade de vida dos policiais civis do Rio de Janeiro Self-esteem and quality of life: essential for the mental health of police officers  

Microsoft Academic Search

The results here shown are part of an ac- tion-research that aimed to elaborate, apply and eval- uate a pilot project for contributing to the mental health of Rio de Janeiro police officers. This research comprises both quantitative and qualitative ap- proaches in an ex-ante and ex-post evaluation pat- tern. The subjects of this research were 148 police officers serving

Edson Ribeiro Andrade; Edinilsa Ramos de Sousa; Maria Cecília de Souza Minayo

473

O Código de Ética das Organizações Bancárias: Uma Análise do Discurso Ético dos Bancos Comerciais The ethics codes of banking organizations: an analysis the ethics speech of commercial banks  

Microsoft Academic Search

This paper has as objective to analyze the contained ethical speeches in the codes of ethics of the financial organizations that haven its available codes of ethics for public consultation. We select a universe amostral of seven financial organizations, being that we will go to display four institutions studied suntil the moment: Banco Santander, Banco Itaú, Banco do Brasil, e

Ana Paula Megiolaro; Arthur Meucci

474

PERCEPÇÃO DOS ALUNOS SOBRE A INCORPORAÇÃO DE ELEMENTOS DE FÍSICA MODERNA E CONTEMPORÂNEA EM UMA DISCIPLINA INTRODUTÓRIA DO CURSO DE FÍSICA. ALUMNI'S PERCEPTION ON THE INCLUSION OF CONTEMPORANEOUS AND MODERN PHYSICS ELEMENTS IN A PHYSICS COURSE INTRODUCTORY DISCIPLINE. S  

Microsoft Academic Search

The inclusion of the Modern Physics in both High School and University initial semesters has been thought for a long time. Justifications have been pointed towards incitement and stimulation. However, when we think about education in universities, there is a worry concerning to the future teachers formation. A professor's didactical experience who inserted contemporaneous and modern physics elements in his

Ana A. Diniz; Ruy C. M. C. Ferraz; Alice Helena; C. Pierson

2008-01-01

475

EFFECTS OF EMOTIONAL CONTENT ON DECLARATIVE MEMORY: TWO STUDIES CONDUCTED ON HEALTHY SUBJECTS AND CEPHALALGIC PATIENTS EFECTOS DEL CONTENIDO EMOCIONAL SOBRE LA MEMORIA DECLARATIVA: DOS ESTUDIOS EFECTUADOS EN SUJETOS SANOS Y PACIENTES CEFALÁLGICOS  

Microsoft Academic Search

Several studies suggest that emotional arousal can promote memory storage. We report two studies evaluating the ef fects of emotional content on declarative memory, conducted with healthy subjects and cephalgic patients. We utilized an adaptation of two versions of the same story, with different arousing properties (neutral or emotional), which have been already employed in experiments involving the enhancing effects

A. Gasbarri; B. Arnone; A. Pompili; A. Marchetti; P. Di Fabrizio; S. Saad Calil; M. C. Tavares; C. Tomaz

476

Estudo de efeitos de um extrato de Arctium lappa (Bardana) na marcação dos constituintes sangüíneos com Tecnécio-99m, na biodisponibilidade do radiofármaco pertecnatato de sódio e na morfologia de hemácias de ratos Wistar.  

E-print Network

??Radionuclídeos têm sido utilizados em Medicina Nuclear para diagnóstico e tratamento de doenças. Estruturas moleculares e celulares marcadas com tecnécio-99m (99mTc) são utilizados como radiobiocomplexos,… (more)

Rosane de Figueiredo Neves

2008-01-01

477

SHORT COMMUNICATIONS General Biology  

E-print Network

primarily in cen- tral Brazil) is the second largest biome in South America. This region encompasses an area). The vegetation types of the cer- rado region range from grassland (campo) to dense savannah (cerradão). Gallery

Linder, Eric

478

ORIGINAL PAPER Influence of multiple factors on plant local adaptation  

E-print Network

effects in Ruellia nudiflora (Acanthaceae) Ilka Ortego´n-Campos · Luis Abdala-Roberts · Vi´ctor Parra). Here we evaluate the influence of folivory and soil type on LA in Ruellia nudiflora by performing

Herrera, Carlos M.

479

Plant Electrophysiology Theory and Methods The use of non-invasive ion-selective microelectrode techniques for  

E-print Network

Ciências, Dept. Biologia Vegetal, Campo Grande, C2, PT- 1749-016 Lisboa, Portugal *Correspondence: J, and their partition and sequestration in different osmotic biochemical forms in the vacuole (ex. formation of salts

Kunkel, Joseph G.

480

Original article Floral nectaries from Limodorum abortivum (L) Sw  

E-print Network

Departamento de Biologia Vegetal, Faculdade de Ciências de Lisboa, Bioco C2, Campo Grande,1700 Lisbon, Portugal = plastid; PR = plastid reticulum; S = secretion; St = starch; V = vacuole; VB = vascular bundles. #12

Paris-Sud XI, Université de

481

La ingeniería de la Estación Espacial Internacional - Duration: 0:30.  

NASA Video Gallery

La Estación Espacial Internacional es del tamaño de un campo de fútbol americano y pesa 827.794 libras. Entonces, ¿cómo hicimos para colocar algo tan grande en el espacio? Pieza por pieza. Quince p...

482

The Author and His Work  

ERIC Educational Resources Information Center

Critical evaluation and biographical comments on contemporary Spanish authors Arcadio de Larrea Palacin, Leopoldo de Luis, Andres Bosch, Condesa de Campo Alange, Gonzalo Torrente Ballester, and Juan Rof Carballo. (DS)

Spain Today, 1972

1972-01-01

483

UNIVERSIDAD AUTNOMA DE MADRID ESCUELA POLITCNICA SUPERIOR  

E-print Network

: Presidente: D. José Luis Masa Campos Vocal: D. Jorge E. López de Vergara Vocal secretario: D. Jorge A. Ruiz time in this project; the second one will represent an effort to improve existing wideband OMTs

Autonoma de Madrid, Universidad

484

Universidade de Braslia Decanato de Ensino de Graduao  

E-print Network

outros 6 docentes Fagner Neves Oliveira D APROVADO Biologia Molecular Fernando Fortes de Valência Claudia Angélica Amorim Amato Fellipe Erick Martins da Silva Campos M APROVADO Ciências da Saúde Laila Salmem

Lucero, Jorge Carlos

485

www.cineca.it Come consultare il corso online  

E-print Network

'indirizzo email istituzionale del tuo Ateneo (ad es. mario.rossi@unibo.it) Inserisci nel campo reCAPTCHA le sei sicuro dell'interpretazione delle parole, clicca sul link "Chiedi un altro CAPTCHA" fino a quando

Robbiano, Lorenzo

486

SERVIO PBLICO FEDERAL UNIVERSIDADE FEDERAL DE SANTA CATARINA  

E-print Network

- BRASIL Fone/fax. (048) 3721-4164 E-mail: fabio.campos@ufsc.br Home page: www.mpenf.ufsc.br 1 CURSO DE de Identidade e CPF. 2.4 - Currículo modelo Lattes, registrado na Plataforma Lattes do CNPq, impresso-900 - FLORIAN�POLIS - SANTA CATARINA - BRASIL Fone/fax. (048) 3721-4164 E-mail: fabio.campos@ufsc.br Home page: www

Floeter, Sergio Ricardo

487

Sistemas DinmicosSistemas Dinmicos Marcus A. M. de Aguiar  

E-print Network

dinâmicos DiscretosDiscretos ContínuosContínuos CamposCampos Autômato celularAutômato celular Redes. Rev. E 55, R4869 (1997) Espessura 1mm T = 9 o C #12;5- Modelos atmosféricos #12;7- Autômatos celulares neurais e ritmos cardíacos - teoria de bifurcações- teoria de bifurcações - rotas para o caos- rotas para

de Aguiar, Marcus A. M.

488

Umas coisitas de grafos e uma introduc~ao informal `a complexidade computacional  

E-print Network

teoria dos grafos e comple- xidade computacional. Em 2 introduzem-se conceitos e propriedades elementares da teoria dos grafos, com ^enfase para a terminologia e metodologia decorrentes da teoria dos emparelhamentos. A teoria dos emparelhamentos ocupa um lugar de relevo na teoria dos grafos. ´E pois frequente os

Lisboa, Universidade Técnica de

489

Evaluation of canine and feline leishmaniasis by the association of blood culture, immunofluorescent antibody test and polymerase chain reaction  

PubMed Central

Background This study aimed to evaluate the occurrence of Leishmania spp. in dogs and cats from Botucatu, São Paulo state, and Campo Grande, Mato Grosso do Sul state, Brazil, by the association of three diagnostic tests: blood culture in liver infusion tryptose medium, immunofluorescent antibody test and polymerase chain reaction. Fifty blood samples of dogs and cats from the Center for Zoonosis Control in Campo Grande, an area endemic for canine visceral leishmaniasis, were collected randomly, as well as canine and feline blood samples from the Municipal Kennel and Animal Protection Association in Botucatu, currently considered a transmission-free, non-endemic area. Results Of the 50 dog blood cultures from Botucatu, three (6%) were positive and of the 50 cats, two (4%) were positive. In Campo Grande, 29 dog blood cultures (58%) were positive and all (100%) cats negative by this test. Polymerase chain reaction detected Leishmania spp. in 100% of dog and cat samples from Botucatu but found all the cats from Campo Grande to be negative. On the other hand, 36 dogs from Campo Grande were positive (72%) by the same technique. Immunofluorescent antibody test in Botucatu found 100% of dogs and cats non-reactive, while in Campo Grande, it detected positivity in 32 dogs (64%) and 15 cats (30%). Conclusions The results show the importance of not only continuous epidemiological surveillance in areas not endemic for leishmaniasis, but also research for accurate diagnosis of this zoonosis. PMID:24565284

2014-01-01

490

Inversor Resonante de Tres Elementos L-LC con Caracteristica Cortocircuitable para Aplicaciones de Calentamiento por Induccion  

NASA Astrophysics Data System (ADS)

Los generadores de calentamiento por induccion son puentes inversores con carga resonante, cuya mision es basicamente crear una corriente sinusoidal de gran amplitud sobre la "bobina de caldeo", que forma parte del tanque resonante. En el interior de esta bobina se introduce la pieza que se desea calentar. EI campo magnetico creado induce corrientes superficiales (corrientes de Foucault) sobre la pieza, que producen su calentamiento. Los tanques resonantes (tambien llamados osciladores) utilizados en la actualidad son el resonante serie y el resonante paralelo. Aunque ya desde hace algun tiempo se vienen construyendo generadores de alta potencia basados en estos dos osciladores, el exito nunca ha. sido completo en ninguno de los dos casos. Tal y como se explica en la introduccion de esta memoria, los puentes inversores utilizados deben operar sobre una carga inductiva (corriente retrasada) para evitar el fenomeno de la recuperacion inversa de sus diodos y la consiguiente ruptura de los transistores. De la restriccion topologica anterior se deduce que el generador paralelo debe conmutar a frecuencias inferiores a la resonancia, y el serie a frecuencias superiores. A esta restriccion topologica hay que unir otra que es exclusiva del calentamiento por induccion: La corriente por la bobina de caldeo debe ser sinusoidal. De no ser asi, resultaria imposible disponer toda la potencia de calentamiento sobre la pieza en el espesor requerido por la aplicacion. Como consecuencia, los inversores no pueden operar por debajo de la frecuencia de resonancia del oscilador, pues en ese caso se amplifican los armonicos de orden superior de la tension/corriente de entrada situados sobre la resonancia, con la consiguiente distorsion de la corriente de salida. La conjuncion de las dos restricciones anteriores obligan al inversor paralelo a funcionar a la frecuencia de resonancia del oscilador. Esto imposibilita un control por variacion de frecuencia, regulandose la potencia desde la seccion de entrada mediante un mayor o menor aporte de corriente al puente. Como consecuencia, la seccion de entrada del paralelo, ya de por si mas voluminosa que lao del serie por el uso de grandes componentes magneticos (bobinas de filtro o de "alisamiento"), result a tambien mas complicada y costosa debido a la necesidad de ser implementada mediante rectificador controlado. Ademas, la regulacion que ofrece el rectificador es pobre, dada su baja frecuencia de conmutacion. En cambio, el circuito serie puede funcionar por encima de la resonancia manteniendo una secuencia de conmutacion sin riesgos de recuperacion inversa y con una corriente de salida practicamente sinusoidal, lo que permite un control de la potencia por variacion de frecuencia. Puesto que la tarea de regulacion se realiza desde el puente inversor, la regulacion resulta mucho mas eficaz y la seccion de entrada se puede implementar mediante un simple rectificador no controlado y un condensador de filtro. (Abstract shortened by UMI.).

Espi Huerta, Jose Miguel

491

Effects observed in the Latin American sector ionospheric F region during the intense geomagnetic disturbances in the early part of November 2004  

NASA Astrophysics Data System (ADS)

The Sun was very active in the early part of November 2004. During the period of 8-10 November 2004, intense geomagnetic disturbances with two superstorms were observed. In this paper, we have investigated the generation and suppression of equatorial ionospheric irregularities and the daytime changes in the F region electron density in the Latin American sector during the period of intense geomagnetic disturbances. We present the ionospheric sounding observations carried out at Manaus and Sao Jose dos Campos, Brazil, during this geomagnetically disturbed period. Also, GPS observations obtained from several stations in Brazil, Argentina, and St. Croix, U.S. Virgin Islands, during the disturbed period are presented. During the main phase of the first superstorm, around the prereversal enhancement time (night of 7-8 November), prompt penetration of electric field was observed and the presence of equatorial ionospheric irregularities was detected from St. Croix, U.S. Virgin Islands (in the northern hemisphere) to Bahia Blanca, Argentina (in the southern hemisphere). The ionospheric sounding observations at Manaus indicate inhibition of prereversal enhancement on the nights of 9-10 and 10-11 November, possibly due to the disturbed thermospheric winds or disturbance electric fields. Virtually no phase fluctuations on the nights of 9-10 and 10-11 November were observed in the Latin American sector. During the daytime on 8 November, the vertical total electron content (VTEC) observations show a negative storm phase at Porto Alegre (Brazil) and Bahia Blanca (Argentina). Again during the daytime on 10 November, the VTEC observations show a negative storm phase from Brasilia (Brazil) to Bahia Blanca. These negative storm phases are associated with a decrease in the O/N2 ratio. During the daytime on 9 November, the VTEC observations show a positive storm phase extending from St. Croix to Porto Alegre, and again on 10 November, VTEC observations show a positive storm phase. These positive storm phases observed are possibly due to changes in large-scale wind circulation and an increase in the O/N2 ratio.

Sahai, Y.; Becker-Guedes, F.; Fagundes, P. R.; de Jesus, R.; de Abreu, A. J.; Paxton, L. J.; Goncharenko, L. P.; Brunini, C.; Gende, M.; Ferreira, A. S.; Lima, N. S.; Guarnieri, F. L.; Pillat, V. G.; Bittencourt, J. A.; Candido, C. M. N.

2009-03-01

492

Radiation Fallout during the Rainy Seasons in the Tropics  

NASA Astrophysics Data System (ADS)

We have studied the properties of troposphere lightning generated plasmas with instrumentation capable of measuring fluxes and spectra of gamma-rays and neutrons. During 2012 to 2014 observations of the natural gamma-ray background were also carried out in the City of Sao Jose dos Campos, Brazil. The instruments performed near-continuous monitoring with a time resolution of one minute. This permits detailed comparison of the rain properties and gammas time profiles. These observations have revealed that the intensity of gamma-radiation accompanying each rain typically decayed with a time constant of ~ 0.5 hour. It is also the characteristic of decay constant for the Radon descendants and we equate the radiation “fallout” with the 214Pb content in rainfall. A simulation of the radiation “fallout” considering the gamma-ray intensity produced in the decay sequence: 214Pb - 214Bi - 214Po - 210Pb was done. The temporal profile of the 214Pb “fallout” concentration was varied in our simulations until the best-fit of the simulated gamma-ray time profile with the observed gamma-ray profile was obtained. Therefore, the 214Pb concentration in the rainwater has been calculated as a ratio of the reconstructed fallout rate to the rainfall. We found that the 214Pb concentration in rain water varied significantly from one rain to another, and even within a single rain we have detected some two orders of magnitude variation in the 214Pb content with time during the rain. Additionally we have found an apparent anti-correlation between the total rainfall rate and the amount of 214Pb concentration in the rainwater. Indeed, we found a maximum 214Pb concentration in durable drizzling rain, and we noticed that in more intense rainfall events the 214Pb was highest in the beginning of the events. This suggests two different “scavenging” mechanisms whereby possible “below-cloud-wash-out” could account for one time series of 214Pb initiated gamma-rays, and a different “in-cloud-wash-out” could account for another characteristic time-series of 214Pb effects. These possibilities are discussed herein.

Gusev, Anatoly; Spjeldvik, Walther; Alves, Mauro; Martin, Inacio

493

Seventy-One Important Questions for the Conservation of Marine Biodiversity  

PubMed Central

The ocean provides food, economic activity, and cultural value for a large proportion of humanity. Our knowledge of marine ecosystems lags behind that of terrestrial ecosystems, limiting effective protection of marine resources. We describe the outcome of 2 workshops in 2011 and 2012 to establish a list of important questions, which, if answered, would substantially improve our ability to conserve and manage the world’s marine resources. Participants included individuals from academia, government, and nongovernment organizations with broad experience across disciplines, marine ecosystems, and countries that vary in levels of development. Contributors from the fields of science, conservation, industry, and government submitted questions to our workshops, which we distilled into a list of priority research questions. Through this process, we identified 71 key questions. We grouped these into 8 subject categories, each pertaining to a broad component of marine conservation: fisheries, climate change, other anthropogenic threats, ecosystems, marine citizenship, policy, societal and cultural considerations, and scientific enterprise. Our questions address many issues that are specific to marine conservation, and will serve as a road map to funders and researchers to develop programs that can greatly benefit marine conservation. Setenta y Un Preguntas Importantes para la Conservación de la Biodiversidad Marina Resumen Los océanos proporcionan alimento, actividad económica y valor cultural para una gran porción de la humanidad. Nuestro conocimiento de los ecosistemas marinos está atrasado con respecto al que tenemos de los ecosistemas terrestres, lo que limita la protección efectiva de los recursos naturales. Describimos el resultado de dos talleres en 2011 y 2012 para establecer una lista de preguntas importantes, las cuales al ser respondidas, mejorarían sustancialmente nuestra habilidad de conservar y manejar los recursos marinos del mundo. Entre los participantes se incluyeron a individuos de la docencia, el gobierno y organizaciones no-gubernamentales, con una amplia experiencia que atraviesa disciplinas, ecosistemas marinos y países que varían en el nivel de desarrollo. Los contribuyentes de los campos de la ciencia, la conservación, la industria y el gobierno, presentaron preguntas a nuestros talleres, las cuales separamos en una lista de preguntas de investigación prioritarias. Por medio de este proceso, identificamos 71 preguntas clave. Las agrupamos en ocho categorías temáticas, cada una perteneciente a un componente amplio de la conservación marina: pesquerías, cambio climático, otras amenazas antropogénicas, ecosistemas, ciudadanía marina, política, consideraciones sociales y culturales, y la iniciativa científica. Nuestras preguntas se dirigen a muchas cuestiones que son específicas de la conservación marina, y servirán como una ruta a seguir para patrocinadores e investigadores que busquen desarrollar programas que puedan beneficiar ampliamente a la conservación marina. PMID:24779474

PARSONS, E C M; FAVARO, BRETT; AGUIRRE, A ALONSO; BAUER, AMY L; BLIGHT, LOUISE K; CIGLIANO, JOHN A; COLEMAN, MELINDA A; CÔTÉ, ISABELLE M; DRAHEIM, MEGAN; FLETCHER, STEPHEN; FOLEY, MELISSA M; JEFFERSON, REBECCA; JONES, MIRANDA C; KELAHER, BRENDAN P; LUNDQUIST, CAROLYN J; MCCARTHY, JULIE-BETH; NELSON, ANNE; PATTERSON, KATHERYN; WALSH, LESLIE; WRIGHT, ANDREW J; SUTHERLAND, WILLIAM J

2014-01-01

494

Low-latitude equinoctial spread-F occurrence at different longitude sectors under low solar activity  

NASA Astrophysics Data System (ADS)

We present the results of a comparative study of spread-F signatures over five low-latitude sites: Chiangmai (CGM; 18.8° N, 98.9° E, mag. Lat. 8.8° N), Thailand; Tanjungsari (TNJ; 6.9° S, 107.6° E, mag. Lat. 16.9° S), Indonesia; Palmas (PAL; 10.2° S, 311.8° E, mag. Lat. 0.9° S) and São José Dos Campos (SJC; 23.2° S, 314.1° E, mag. Lat. 14.0° S), Brazil; and Tucumán (TUC; 26.9° S, 294.6° E, mag. Lat. 16.8° S), Argentina. The investigation was based on simultaneous ionograms recorded by an FMCW (frequency-modulated continuous-wave) at CGM, an IPS-71 (digital ionosonde from KEL aerospace) at TNJ, a CADI (Canadian Advanced Digital Ionosonde) at PAL and SJC, and an AIS-INGV (Advanced Ionospheric Sounder - Istituto Nazionale di Geofisica e Vulcanologia) at TUC, during the equinoctial periods March-April (R12 = 2.0 and R12 = 2.2) and September-October (R12 = 6.1 and R12 = 7.0) 2009, for very low solar activity. Spread-F signatures were categorized into two types: the range spread-F (RSF) and the frequency spread-F (FSF). The study confirms that the dynamics and the physical processes responsible for these phenomena are actually complicated. In fact, the features that arise from the investigation are different, depending on both the longitude sector and on the hemisphere. For instance, TUC, under the southern crest of the ionospheric equatorial ionization anomaly (EIA), shows a predominance of RSF signatures, while both SJC, under the southern crest of EIA but in a different longitude sector, and CGM, under the northern crest of EIA, show a predominance of FSF signatures. Moreover, the spread-F occurrence over the longitude sector that includes CGM and TNJ is significantly lower than the spread-F occurrence over the longitude sector of PAL, SJC, and TUC.

Pezzopane, M.; Zuccheretti, E.; Abadi, P.; de Abreu, A. J.; de Jesus, R.; Fagundes, P. R.; Supnithi, P.; Rungraengwajiake, S.; Nagatsuma, T.; Tsugawa, T.; Cabrera, M. A.; Ezquer, R. G.

2013-02-01

495

Brazil's development plan centers on deepwater oil  

SciTech Connect

Brazil's state owned Petroleos Brasileiro SA continues to advance deepwater technology as it pushes the frontier in ultradeep waters of the Campos basin off Rio de Janeiro state. Petrobras holds many world records related to deepwater drilling and production. But the Campos basin campaign goes beyond technological bragging rights. The prolific basin, which accounts for more than half the country's crude oil production, is expected to be the cornerstone of Brazil's plans to boost production to 1 million b/d at year end 1993. Even with the surge to 1 million b/d, Brazil almost certainly will continue to be a net oil importer. The missed production targets result not from lack of identified oil reserves or technological capability, both of which Petrobras has in abundance in the Campos basin. The problem is lack of capital in the financially stressed country. Petrobras began reassessing its spending plans in 1992 after projections called for a need to spend about $18 billion on exploration and production to meet the target of 1 million b/d by 1995. Those plans are being further reassessed as Brazil's government indicates it might slash Petrobras's budget by half this year amid continuing economic turmoil. The funding dilemma also strengthens the case for at least partially privatizing the giant state petroleum concern, a controversial step at best. The paper discusses Campos surge in production, the Campos potential, deepwater record, Marlim Phase 1, Albacora field production, the possibility of foreign participation, and the Barracuda field pilot.

Not Available

1993-01-03

496

REVISIÓN SERRADELA AMARILLA (Ornithopus compressus) Y SERRADELA ROSADA (O. sativus): DOS NUEVAS ESPECIES DE LEGUMINOSAS FORRAJERAS ANUALES PARA LA ZONA MEDITERRÁNEA DE CHILE Yellow serradella (Ornithopus compressus) and pink serradella (O. sativus): two new species of annual legumes for the Mediterranean climate zone of Chile  

Microsoft Academic Search

A B S T R A C T Yellow serradella (Ornithopus compressus L.) and pink serradella (Ornithopus sativus Brot.) are two new annual forage legume species for infertile, acidic, and light texture soils, in dryland areas of the Mediterra- nean zone of Chile. Seven cultivars of yellow serrade- lla and one cultivar of pink serradella, developed by the Center for

497

LETTERS TO THE EDITORS: Lightning ball: experiments on creation and hypotheses(comment on "Energy density calculations for ball-lightning-like luminous silicon balls" by G S Paiva, J V Ferreira, C C Bastos, M V P dos Santos, A C Pavão)  

NASA Astrophysics Data System (ADS)

The problems addressed in this paper include estimating: the energy density of luminous silicon balls, the density range of a natural lightning ball, and whether and how the object created and described in the commented paper (Usp. Fiz. Nauk 180 218 (2010) [Phys. Usp. 53 (2) 209 (2010)]) corresponds to the natural phenomenon.

Shabanov, Gennadii D.

2010-05-01

498

Lo que Piensan los Estudiantes y Profesores Sobre la Calidad de la Educacion Superior. Estudio Comparativo en 5 Instituciones de Educacion Superior--dos publicas y tres privadas--en Guadalajara, Jalisco, Mexico (What Students and Faculties Think about the Quality of Higher Education. Comparative Study of 5 Higher Education Institutions--Two Public and Three Private--in Guadalajara, Jalisco, Mexico).  

ERIC Educational Resources Information Center

This study, written in Spanish, compared attitudes of students (N=302) and faculty (N=28) at five institutions of higher education (two public and three private) in Guadalajara, Jalisco, Mexico. The study explored first, whether respondents believed there are significant quality differences between private and public universities and, second, what…

Yanez, Maria Lorena Hernandez