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1

SEGURANÇA VS. DIGNIDADE - O PROBLEMA DA TORTURA REVISITADO PELA CRIMINOLOGIA DO RECONHECIMENTO  

Microsoft Academic Search

RESUMO - O problema crucial que o presente artigo pretende tratar é espe- cialmente o link entre o conceito de reconhecimento e a dignidade da pessoa humana. Esse problema é analisado a partir da persepctiva de uma criminologia crítica. A tese defendida neste artigo é que a teoria do reconhecimento de Axel Honneth oferece um frutuoso arcabouço teórico para aqueles

Giovani Saavedra

2008-01-01

2

Amazon forest fires between 2001 and 2006 and birth weight in Porto Velho.  

PubMed

Birth weight data (22,012 live-births) from a public hospital in Porto Velho (Amazon) was used in multiple statistical models to assess the effects of forest-fire smoke on human reproductive outcome. Mean birth weights for girls (3,139 g) and boys (3,393 g) were considered statistically different (p-value < 2.2e-16). Among all models analyzed, the means were considered statistically different only when treated as a function of month and year (p-value = 0.0989, girls and 0.0079, boys) . The R (2) statistics indicate that the regression models considered are able to explain 65 % (girls) and 54 % (boys) of the variation of the mean birth weight. PMID:22476349

Prass, Taiane S; Lopes, Sílvia R C; Dórea, José G; Marques, Rejane C; Brandão, Katiane G

2012-04-04

3

ZOONOSES CAUSADAS POR PARASITAS INTESTINAIS DE CÃES E O PROBLEMA DO DIAGNÓSTICO  

Microsoft Academic Search

RESUMO Os últimos 20 anos foram marcados por um intenso progresso tecnológico e por importantes alterações culturais e sociais com reflexos tanto em saúde humana como animal. Entretanto, infelizmente, as zoonoses causadas por parasitas intestinais de cães não deixaram de ser um problema permanente de saúde pública nos países em desenvolvimento, e uma preocupação crescente nos países desenvolvidos. A eficácia

S. Katagiri; T. C. G. Oliveira-Sequeira

2007-01-01

4

Habilidades Sociais Educativas Parentais e problemas de comportamento: comparando pais e mães de pré-escolares  

Microsoft Academic Search

Resumo: Práticas educativas parentais podem contribuir para a instalação de problemas de comportamento em crianças. O objetivo deste estudo foi comparar Habilidades Sociais Educativas Parentais (HSE-P) entre pais de pré-escolares com problemas de comportamento e pais de pré-escolares com comportamentos socialmente habilidosos. Adicionalmente, compa- raram-se as HSP-E de pais e mães. Participaram 48 casais, dos quais 24 tinham um(a) filho(a)

Alessandra Turini Bolsoni-Silva; Edna Maria Marturano

2008-01-01

5

Maternal mercury exposure and neuro-motor development in breastfed infants from Porto Velho (Amazon), Brazil.  

PubMed

Fish is an important item in the diet of Amazonians, and per se is their best single source of essential nutrients. Rapid urbanization and migration are bringing changes in dietary habits of Amazonians. Exposure to fish-Hg during pregnancy and lactation were studied in 100 women and newborns from Porto Velho. Tissue-Hg concentrations and neurodevelopment (Gesell Developmental Schedules) were assessed at birth and at 6 months in exclusively breastfed infants. Maternal mean frequency of fish consumption was low (<2 meals/week; range 0->7 meals/week) compared to Amazonian standards. Women consuming <2 fish meals/week showed less median hair-Hg (3.5 microgg-1) than women that consumed 2 fish meals/week (5.7 microgg). Median total Hg in maternal hair (5.4 microgg-1) was higher than in newborns (1.6 microgg-1). Significant correlation was observed between maternal hair-Hg and infant hair-Hg at birth (r=0.353; p<0.01) and at six months (r=0.510; p<0.01). Placenta-Hg was also significantly correlated to maternal hair-Hg (r=0.321; p<0.01), newborn hair-Hg (r=0.219; p<0.05), maternal blood-Hg (r=0.250; p<0.01) and to umbilical cord-Hg (r=0.857; p<0.01). Most infants (74%) had normal Gesell Schedules but among the 26% showing neuro-motor development delays only six (7%) had multiple (motor, language, and adaptative) delays. The infants with multiple delays were born from mothers with range of hair-Hg comparable to mothers of normally developed infants. Coincidentally, mothers of infants with multiple delays also showed the lowest range of income and level of education. Fish consumption, income, and level of education varied greatly among these breastfeeding urban mothers. It seems that development delays of exclusively breastfed infants are a component of the health inequalities that accompanies socioeconomic disadvantages. PMID:17011234

Marques, Rejane Corrêa; Garrofe Dórea, José; Rodrigues Bastos, Wanderley; de Freitas Rebelo, Mauro; de Freitas Fonseca, Márlon; Malm, Olaf

2006-09-29

6

The Lapedo Child Reborn: Contributions of CT Scanning and Rapid Prototyping for an Upper Paleolithic Infant Burial and Face Reconstruction. The Case of Lagar Velho Interpretation Centre, Leiria, Portugal  

Microsoft Academic Search

The Lagar Velho rock shelter became known worldwide since the discovery, in late 1998, of a nicely preserved Upper Paleolithic burial, containing an almost complete child skeleton, whose later anatomical study provided strong evidence for an admixture between the latest Neanderthal communities of Iberia and the first anatomically modern humans during the few millennia that the two populations co-existed. Given

F. Almeida; P. Bártolo; N. Alves; H. Almeida; M. Ponce de Léon; C. Zollikofer; B. Pierson; P. Serra; C. Duarte; E. Trinkaus

2007-01-01

7

UM Weather  

NSDL National Science Digital Library

Sponsored by The Weather Underground at the University of Michigan at Ann Arbor, UM Weather bills itself as the "Internet's premier source of weather information." The site offers several general audience tools such as the Fast Forecast for any city in the US, ski weather, and weather cams. But, it also provides access to over two dozen weather software packages, a new computer model forecasts page, and most impressively a list of close to 400 other weather related Web sites. Professionals and researchers will appreciate the non-technical feel of the site and the valuable information they can procure from it.

1994-01-01

8

Investigações Matemáticas na Sala de Aula: Um Projecto Colaborativo1  

Microsoft Academic Search

Este artigo apresenta o trabalho levado a cabo por um grupo colaborativo envolvendo professores de Matemática e investigadores com o objectivo de (i) desenvolver tarefas susceptíveis de desafiar os alunos a fazerem investigações matemáticas e (ii) estudar os problemas que a realização desse tipo de aulas coloca aos professores. Dá-se uma perspectiva geral do trabal ho realizado e apresenta -se

Hélia Oliveira; Irene Segurado; João Pedro da Ponte; Maria Helena Cunha

9

ARTIGO ARTICLE Violence a global public health problem* Violência como um problema global de saúde pública  

Microsoft Academic Search

This article is a version of the Intro- duction to the World Report on Violence and Health, published by the World Health Organiza- tion (WHO). It presents a general description about this phenomenon and points some basic questions: concepts and definitions about the theme; the state of knowledge about it; nature and typology on violence; proposal of a quantita- tive

Linda L. Dahlberg; Etienne G. Krug

10

Traditional uses, chemistry and pharmacology of Croton species (Euphorbiaceae)  

Microsoft Academic Search

Croton é um gênero de Euphorbiaceae com cerca de 1300 espécies, amplamente distribuídas em regiões tropicais do Novo e Velho Mundos. Várias espécies há muito tempo desempenham papel importante nos usos tradicionais de plantas medicinais na África, Ásia e América do Sul. Tais usos incluem tratamento de câncer, constipação intestinal, diarréia e outros problemas digestivos, diabetes, feridas externas, febre, hipercolesterolemia,

Antonio Salatino; Maria L. Faria Salatino; Giuseppina Negri

2007-01-01

11

Il problema di Malfatti nella letteratura matematica dell'800  

Microsoft Academic Search

Riassunto  In questa nota viene analizzato storicamente il problema legato al nome del matematico italiano Gianfrancesco Malfatti: «inscrivere\\u000a in un triangolo tre cerchi, ciascuno tangente agli altri due e a due lati del triangolo». Lo studio ha lo scopo di individuare\\u000a gli apporti più significativi dati a questo problema e di evidenziarne la posizione di centralità nella ricerca geometrica\\u000a dell'800.

Alessandra Fiocca

1980-01-01

12

Un problema fondamentale della Dinamica dei sistemi elastici  

Microsoft Academic Search

Sunto.  In questa memoria si esamina il problema di determinare il moto di un corpo elasticoC una volta assegnati all'istantet=0 gli spostamenti e le velocit di tutti i punti diC, e pert?0 gli spostamenti di tutti i punti della superficieF che limita il corpo elastico.

Renato Einaudi

1940-01-01

13

The geology of the Morro Velho gold deposit in the Archean Rio das Velhas greenstone belt, Quadrila??tero Ferri??fero, Brazil  

USGS Publications Warehouse

The Morro Velho gold deposit, Quadrila??tero Ferri??fero region, Minas Gerais, Brazil, is hosted by rocks at the base of the Archean Rio das Velhas greenstone belt. The deposit occurs within a thick carbonaceous phyllite package, containing intercalations of felsic and intermediate volcaniclastic rocks and dolomites. Considering the temporal and spatial association of the deposit with the Rio das Velhas orogeny, and location in close proximity to a major NNW-trending fault zone, it can be classified as an orogenic gold deposit. Hydrothermal activity was characterized by intense enrichment in alteration zones of carbonates, sulfides, chlorite, white mica??biotite, albite and quartz, as described in other Archean lode-type gold ores. Two types of ore occur in the deposit: dark gray quartz veins and sulfide-rich gold orebodies. The sulfide-rich orebodies range from disseminated concentrations of sulfide minerals to massive sulfide bodies. The sulfide assemblage comprises (by volume), on average, 74% pyrrhotite, 17% arsenopyrite, 8% pyrite and 1% chalcopyrite. The orebodies have a long axis parallel to the local stretching lineation, with continuity down the plunge of fold axis for at least 4.8??km. The group of rocks hosting the Morro Velho gold mineralization is locally referred to as lapa seca. These were isoclinally folded and metamorphosed prior to gold mineralization. The lapa seca and the orebodies it hosts are distributed in five main tight folds related to F1 (the best examples are the X, Main and South orebodies, in level 25), which are disrupted by NE- to E-striking shear zones. Textural features indicate that the sulfide mineralization postdated regional peak metamorphism, and that the massive sulfide ore has subsequently been neither metamorphosed nor deformed. Lead isotope ratios indicate a model age of 2.82 ?? 0.05??Ga for both sulfide and gold mineralization. The lapa seca are interpreted as the results of a pre-gold alteration process and may be divided into carbonatic, micaceous and quartzose types. The carbonatic lapa seca is subdivided into gray and brown subtypes. Non-mineralized, gray carbonatic lapa seca forms the hanging wall to the orebodies, and is interpreted as the product of extreme CO2 metasomatism during hydrothermal alteration. This dolomitic lapa seca ranges in composition from relatively pure limestone and dolomite to silty limestone and dolomite. The brown carbonatic and micaceous lapa secas are the host rocks to gold. These units are interpreted to correspond to the sheared and hydrothermal products of metamorphosed volcaniclastic and/or volcanic rocks of varying composition from dacitic to andesitic, forming various types of schists and phyllites. The high-grade, massive sulfide orebodies occur at the base of the gray carbonatic lapa seca. Both disseminated mineralization and quartz veins are hosted by micaceous lapa seca. The data are consistent with a model of epigenetic mineralization for the lapa seca, from a hydrothermal fluid derived in part from the Archean basement or older crust material. ?? 2007 Elsevier B.V. All rights reserved.

Vial, D. S.; DeWitt, E.; Lobato, L. M.; Thorman, C. H.

2007-01-01

14

Total and methyl-mercury in hair and milk of mothers living in the city of Porto Velho and in villages along the Rio Madeira, Amazon, Brazil.  

PubMed

High fish consumption and extended breastfeeding are hallmarks of traditional lifestyle in Western Amazonia. We studied sources of mercury exposure, fish-methylmercury (meHg) and dental-amalgam filling, in 75 urban and 82 rural lactating mothers. Total mercury was determined in all samples while meHg concentrations were determined in subsamples of milk (45) and hair (27) of urban mothers living in Porto Velho (PV) and in hair (46) and milk (37) of mothers living in traditional communities (TC) of the Rio Madeira. The TC mothers showed significantly higher median hair-Hg concentrations (8.2?gg(-1)) than PV mothers (1.3?gg(-1)). Median total Hg in milk of PV mothers (0.36ngg(-1)) was significantly lower (p=0.0000) than that found in milk of TC mothers (2.30ngg(-1)). The median meHg concentrations in milk of TC mothers were also significantly higher (1.0ngg(-1)) than in milk of PV mothers (0.07ngg(-1)). For urban mothers with low fish consumption rates (and relatively higher dental amalgam fillings) the proportion of inorganic Hg in milk was higher (85%) than in TC (62%). In TC mothers 51% of breast milk Hg concentrations were above 2ngg(-1) (world median concentrations), contrasting with 8% in PV mothers. Despite this, there was no significant correlation between total Hg concentrations in milk and either amalgam filling or daily fish consumption. Socioeconomic changes occurring in Western Amazonia are causing changes in fish-eating habits of urban mothers. However, traditional lifestyle and attendant high fish consumption in riverine populations can still impact total Hg and methylmercury concentrations in mothers' milk and hair. PMID:23340120

Vieira, Solange M; de Almeida, Ronaldo; Holanda, Igor B B; Mussy, Marília H; Galvão, Roberta C F; Crispim, Pedro T B; Dórea, José G; Bastos, Wanderley R

2013-01-20

15

The Dynamics of Transmission and Spatial Distribution of Malaria in Riverside Areas of Porto Velho, Rond?nia, in the Amazon Region of Brazil  

PubMed Central

The study area in Rondônia was the site of extensive malaria epidemic outbreaks in the 19th and 20th centuries related to environmental impacts, with large immigration flows. The present work analyzes the transmission dynamics of malaria in these areas to propose measures for avoiding epidemic outbreaks due to the construction of two Hydroelectric Power Plants. A population based baseline demographic census and a malaria prevalence follow up were performed in two river side localities in the suburbs of Porto Velho city and in its rural vicinity. The quantification and nature of malaria parasites in clinical patients and asymptomatic parasite carriers were performed using microscopic and Real Time PCR methodologies. Anopheles densities and their seasonal variation were done by monthly captures for defining HBR (hourly biting rate) values. Main results: (i) malaria among residents show the riverside profile, with population at risk represented by children and young adults; (ii) asymptomatic vivax and falciparum malaria parasite carriers correspond to around 15% of adults living in the area; (iii) vivax malaria relapses were responsible for 30% of clinical cases; (iv) malaria risk for the residents was evaluated as 20–25% for vivax and 5–7% for falciparum malaria; (v) anopheline densities shown outdoors HBR values 5 to 10 fold higher than indoors and reach 10.000 bites/person/year; (vi) very high incidence observed in one of the surveyed localities was explained by a micro epidemic outbreak affecting visitors and temporary residents. Temporary residents living in tents or shacks are accessible to outdoors transmission. Seasonal fishermen were the main group at risk in the study and were responsible for a 2.6 fold increase in the malaria incidence in the locality. This situation illustrates the danger of extensive epidemic outbreaks when thousands of workers and secondary immigrant population will arrive attracted by opportunities opened by the Hydroelectric Power Plants constructions.

Katsuragawa, Tony Hiroshi; Gil, Luiz Herman Soares; Tada, Mauro Shugiro; de Almeida e Silva, Alexandre; Costa, Joana D'Arc Neves; da Silva Araujo, Maisa; Escobar, Ana Lucia; Pereira da Silva, Luiz Hildebrando

2010-01-01

16

COLONIZADOR E COLONOS: NA FRONTEIRA DA TERRA O LIMITE DOS SONHOS DE UM FUTURO PROMISSOR  

Microsoft Academic Search

RESUMO - O município de Alta Floresta- MT situado na Amazônia norte Mato- grossense foi colonizado na década de 70. Neste local, a colonizadora INDECO, encontrou as condições ideais para instalar um projeto que deveria assentar pequenos agricultores da região sul (colonos) que estavam enfrentando problemas nas suas terras de origem. Esse projeto foi construído sobre o tripé Educação \\/

ROSANE DUARTE ROSA; CLAILTON LIRA PERIN; ROSALVO DUARTE ROSA

17

Demanda por fundos de investimento RF e DI: um modelo de escolha discreta  

Microsoft Academic Search

Resumo : Neste artigo usamos a teoria da organização industrial para analisar os determinantes da demanda de fundos de investimento de renda fixa e DI no Brasil. Utilizamos um Modelo de Escolha Discreta conhecido como Logit Aninhado, dividindo os fundos de investimento em grupos de acordo com a similaridade das instituições que os administram. Dessa forma, evitamos os problemas relacionados

Thiago Rodrigues; Ricardo Buscariolli Pereira; Juliana Inhasz

2008-01-01

18

El problema de estabilidad de los sistemas Hamiltonianos multidimensionales  

NASA Astrophysics Data System (ADS)

Se revisarán los aspectos básicos del problema de estabilidad de sistemans Hamiltonianos N-dimensionales, haciendo especial énfasis en los posibles mecanismos que dan lugar a la aparición de ``caos": overlap de resonancias, difusión de Arnol'd y otros procesos difusivos alternativos. Se mencionarán los aspectos aún no resueltos sobre la estabilidad de los sistemas con N > 2. Finalmente, se discutirá cuáles de estos mecanismos podrían tener alguna relevancia en la dinámica de sistemas estelares y planetarios.

Cincotta, P. M.

19

Il problema della velocitá di combustione di un razzo ibrido  

Microsoft Academic Search

\\u000a Sunto  I motori razzo ibridi sono di notevole attualitá per i numerosi vantaggi che offrono, tra cui l’uso di metalli leggeri e la\\u000a possibilitá di «stop-star».\\u000a \\u000a Problema fondamentale dei razzi ibridi é la determinazione della velocitá di combustione che risulta indipendente dalla velocitá\\u000a di reazione.\\u000a \\u000a \\u000a \\u000a Essenzialmente ció che controlla il processo é il tempo necessario alle specie reagenti per unirsi. Quindi

Irvin Glassman

1967-01-01

20

Um-1 Lubricating Grease.  

National Technical Information Service (NTIS)

In order to increase the low temperature properties of thick lubricating grease (UM-1) based on mineral oil and ceresine, vinylcyclohexene is added, and diphenylamine as antioxidant. The proposed grease can be used up to 120C. Low temperature grease compo...

M. Y. Berkovich V. S. Gulerman L. M. Levinson P. N. Matyushin V. A. Popov

1966-01-01

21

Estabilidades e mudanças em padrões familiares de crianças com problemas de comportamento exteriorizado  

Microsoft Academic Search

Resumo: A literatura sobre crianças com problemas de comportamento exteriorizado tem enfatizado a necessidade de descrever a origem e a evolução desses comportamentos. Este estudo visa comparar as continuidades e mudanças no perfil cognitivo, no estresse parental e na qualidade das relações familiares de crianças com problemas de comportamento exteriorizado. Participaram da coleta de dados sete crianças pré-escolares morando com

Maria Auxiliadora Dessen; Adriane Corrêa Szelbracikowski

2006-01-01

22

Sul problema del cambiamento di variabili nella teoria delle distribuzioni (II)  

Microsoft Academic Search

Riassunto  Si espongono nuove considerazioni relative al problema del cambiamento di variabili nella teoria delle distribuzioni, in aggiunta\\u000a a quelle svolte in un nostro precedente lavoro. Nel primo numero si tratterà il problema della derivazione delle distribuzioni\\u000a trasformate in analogia al teorema classico sulla derivazione delle funzioni composte. Nei numeri successivi si tratterà soprattutto\\u000a della estensione, al caso di più variabili,

S. Albertoni; M. Cugiani

1953-01-01

23

El papel de la afectividad en la resolución de problemas matemáticos  

Microsoft Academic Search

Resumen En este trabajo se estudia la influencia de las creencias, actitudes y emociones (afectivi- dad) que el alumnado de 3º y 4º curso de Educación Secundaria Obligatoria experimenta cuando se enfrenta a la resolución de problemas de matemáticas. El objetivo que se persi- gue es poner de manifiesto el importante papel que desempeñan los afectos en el éxito o

Nuria Gil Ignacio; Lorenzo J. Blanco Nieto; Eloísa Guerrero Barona

24

Práticas educativas e problemas de comportamento: uma análise à luz das habilidades sociais  

Microsoft Academic Search

Este artigo tem por objetivo analisar as relações entre práticas educativas dos pais e problemas de comporta- mento dos filhos, à luz do referencial teórico-prático do treinamento em habilidades sociais. A forma como os pais educam seus filhos parece ser crucial à promoção de comportamento s socialmente adequados, porém, com freqüência, as famílias acabam estimulando comportamentos inadequados por meio de

Alessandra Turini Bolsoni-Silva; Edna Maria Marturano

2002-01-01

25

Os velhos capoeiras ensinam pegando na mão  

Microsoft Academic Search

* RESUMO: Esse artigo trata de analisar as formas tradicionais de transmissão dos saberes presentes no âmbito da cultura popular. A partir dessa abordagem, trazemos as experiências educacionais exis- tentes no universo da capoeira angola - uma importante manifesta- ção da cultura afro-brasileira - para uma reflexão sobre o papel dos mestres nesse processo. A memória, a ancestralidade, a ritualidade

Pedro Rodolpho Jungers Abib

2006-01-01

26

Habilidades Sociais e Problemas de Comportamento de Pré- Escolares: Comparando Avaliações de Mães e de Professoras Preschooler's Social Skills and Behavior Problems: Comparison between Mother and Teacher Assessments  

Microsoft Academic Search

Resumo Este estudo comparou avaliações de mães e professoras, sobre habilidades sociais e problemas de comportamento de crianças, identificadas pelas professoras, como tendo problemas de comportamento. Participaram mães e professoras de 24 crianças com problemas de comportamento e 24 crianças indicadas como sendo socialmente habilidosas. Foram utilizados o Questionário de Comportamentos Socialmente Adequados e a Escala Comportamental Infantil, versões para

Alessandra Turini Bolsoni-Silva; Edna Maria Marturano; Verônica Aparecida Pereira; Jair Wagner de Souza Manfrinato

27

Adequação do consumo de ferro por gestantes e mulheres em idade fértil atendidas em um serviço de pré-natal Adequacy of iron consumption in pregnant and fertile women assisted by a prenatal service Adecuación del consumo de hierro por mujeres embarazadas y fértiles asistidas por un servicio prenatal  

Microsoft Academic Search

ReSumo: Anemia por carência alimentar de ferro é o problema nutricional mais prevalente em nível de saúde coletiva e afeta crianças e mulheres em idade reprodutiva, em especial as gestantes. Este estudo avaliou o consumo de alimentos fontes de ferro, naturais e fortificados, e a adequação de energia e nutrientes de mulheres em idade reprodutiva, gestantes ou não. Desenvolveu-se um

Juliana Moreira Lino Viana; Adriana Uehara Santos; Maria Alice Tsunechiro; Ana Paula; Sayuri Sato; Isabel Bonadio; Sophia Cornbluth Szarfarc; Elizabeth Fujimori

28

Um supressor de fundo térmico para a câmara infravermelha CamIV  

NASA Astrophysics Data System (ADS)

O ângulo sólido subtendido pelos pixels na câmara infravermelha do NexGal (CamIV) que operamos no OPD/LNA contém contribuições provenientes do sistema de coleta de fluxo propriamente dito - sendo esta a parte que interessa para as medidas astronômicas - e contribuições da obstrução central, sistema de suporte do espelho secundário e região exterior à pupila de entrada do telescópio. Estas últimas contribuições são devi-das à emissão de corpo negro à temperatura ambiente e aumentam exponencialmente para comprimentos de onda maiores que 2 micra (banda K, no infravermelho próximo). Embora a resultante pode ser quantificada e subtraída dos sinais relevantes, sua variância se adiciona à variância do sinal, e pode ser facilmente a contribuição domi-nante para a incerteza final das medidas, tornando ineficiente o processo de extração de informação e degradando a sensibilidade da câmara. A maneira clássica de resolver esse problema em sistemas ópticos que operam no infravermelho, onde os efeitos da emissão térmica do ambiente são importantes, é restringir o ângulo sólido subtendido pelos pixels individuais exclusivamente aos raios provenientes do sistema óptico. Para tanto, projeta-se uma imagem real, bastante reduzida, da pupila de entrada do sistema óptico num anteparo que transmita para o sistema de imageamento só o que interessa, bloqueando as contribuições das bordas externas à pupila de entrada, obstrução central do telescópio e sistema de suporte. Como a projeção é realizada em ambiente criogênico, a contribuição térmica espúria é efetivamente eliminada. Nós optamos por um sistema do tipo Offner para implementar na prática esta função. Trata-se de um sistema baseado em espelhos esféricos, bastante compacto e ajustado por construção. A opção por espelhos do mesmo material que o sistema de suporte (Alumínio) minimiza a dilatação diferencial, crítica nesse tipo de aplicação. Apresentamos as soluções detalhadas do projeto óptico-mecânico, bem como uma análise de flexões e desempenho em termos de qualidade de imagem.

Jablonski, F.; Laporte, R.

2003-08-01

29

OV-Wav: um novo pacote para análise multiescalar em astronomia  

NASA Astrophysics Data System (ADS)

Wavelets e outras formas de análise multiescalar têm sido amplamente empregadas em diversas áreas do conhecimento, sendo reconhecidamente superiores a técnicas mais tradicionais, como as análises de Fourier e de Gabor, em certas aplicações. Embora a teoria dos wavelets tenha começado a ser elaborada há quase trinta anos, seu impacto no estudo de imagens astronômicas tem sido pequeno até bem recentemente. Apresentamos um conjunto de programas desenvolvidos ao longo dos últimos três anos no Observatório do Valongo/UFRJ que possibilitam aplicar essa poderosa ferramenta a problemas comuns em astronomia, como a remoção de ruído, a detecção hierárquica de fontes e a modelagem de objetos com perfis de brilho arbitrários em condições não ideais. Este pacote, desenvolvido para execução em plataforma IDL, teve sua primeira versão concluída recentemente e está sendo disponibilizado à comunidade científica de forma aberta. Mostramos também resultados de testes controlados ao quais submetemos os programas, com a sua aplicação a imagens artificiais, com resultados satisfatórios. Algumas aplicações astrofísicas foram estudadas com o uso do pacote, em caráter experimental, incluindo a análise da componente de luz difusa em grupos compactos de galáxias de Hickson e o estudo de subestruturas de nebulosas planetárias no espaço multiescalar.

Pereira, D. N. E.; Rabaça, C. R.

2003-08-01

30

O BRUXO DO COSME VELHO DECRETOU A MORTE DO DIABO  

Microsoft Academic Search

This article seeks to investigate some aspects of the trajectory of Lucifer in the Bible, in The- ology, in literary criticism, and in the short stories Adão e Eva, A Igreja do Diabo and O Anjo Rafael, by Machado de Assis.

Salma FERRAZ

2008-01-01

31

EVP2D- um programa automatico para a analise elastovistoplastica e de dano de problemas bidimensionais e axissimetricos. (EVP2D- a computer code developed for the eslastoviscoplastic-damage analysis of axyssimetrical and two-dimensional problems).  

National Technical Information Service (NTIS)

This work aims to describe the computer code EVP2D developed for the elastoviscoplastic-damage analysis of metallic components, with particular emphasis dedicated to the problem of creep damage and rupture. After a brief introduction of the basic concepts...

O. J. A. Goncalves Filho

1987-01-01

32

Il problema del litio.  

NASA Astrophysics Data System (ADS)

Contents: 1. Introduzione. 2. La nucleosintesi del Big Bang. 3. Il litio nelle stelle di popolazione II. 4. I modelli stellari standard. 5. Il litio negli ammassi aperti. 6. Meccanismi di distruzione "non standard". 7. I modelli non-standard applicati alla popolazione II. 8. L'evoluzione Galattica del litio. 9. Quali stelle producono litio? 10. Il litio come elemento chiave per dare un nome agli oggetti stellari più minuscoli. 11. Conclusioni.

D'Antona, F.

1995-03-01

33

Configurable multi-layer CNN-UM emulator on FPGA  

Microsoft Academic Search

A new emulated digital multi-layer CNN-UM chip architecture called Falcon has been developed. In this paper the main steps of the FPGA implementation are introduced. Main results are as follows: CNN-UM architecture emulated on Xilinx Virtex series FPGA, 3D non-linear spatio-temporal dynamics can be implemented on this architecture. The critical parameters of the implementation in single layer configuration are 55

ZOLTAN NAGY; PETER SZOLGAY

2002-01-01

34

Configurable multilayer CNN-UM emulator on FPGA  

Microsoft Academic Search

A new emulated digital multilayer cellular neural network (universal machine (CNN-UM) chip architecture called Falcon has been developed. In this brief, the main steps of the field-programmable gate array (FPGA) implementation are introduced. The main results are as follows. The CNN-UM architecture emulated on Xilinx Virtex series FPGA, three-dimensional nonlinear spatio-temporal dynamics can be implemented on this architecture. The critical

Zoltán Nagy; Péter Szolgay

2003-01-01

35

BLAST sources at 250, 350 and 500um (Devlin+, 2009)  

NASA Astrophysics Data System (ADS)

Submillimetre surveys during the past decade have discovered a population of luminous, high-redshift, dusty starburst galaxies. In the redshift range 1 less than or equal to z less than or equal to 4, these massive submillimetre galaxies go through a phase characterized by optically obscured star formation at rates several hundred times that in the local Universe. Half of the starlight from this highly energetic process is absorbed and thermally re-radiated by clouds of dust at temperatures near 30K with spectral energy distributions peaking at 100um in the rest frame. At 1 less than or equal to z less than or equal to 4, the peak is redshifted to wavelengths between 200 and 500um. The cumulative effect of these galaxies is to yield extragalactic optical and far-infrared backgrounds with approximately equal energy densities. Since the initial detection of the far-infrared background (FIRB), higher-resolution experiments have sought to decompose this integrated radiation into the contributions from individual galaxies. Here we report the results of an extragalactic survey at 250, 350 and 500um. Combining our results at 500 mum with those at 24um, we determine that all of the FIRB comes from individual galaxies, with galaxies at z greater than or equal to 1.2 accounting for 70% of it. As expected, at the longest wavelengths the signal is dominated by ultraluminous galaxies at z>1. (3 data files).

Devlin, M. J.; Ade, P. A. R.; Aretxaga, I.; Bock, J. J.; Chapin, E. L.; Griffin, M.; Gundersen, J. O.; Halpern, M.; Hargrave, P. C.; Martin, P. G.; Mauskopf, P.; Moncelsi, L.; Netterfield, C. B.; Ngo, H.; Olmi, L.; Pascale, E.; Patanchon, G.; Rex, M.; Scott, D.; Semisch, C.; Thomas, N.; Truch, M. D. P.; Tucker, C.; Tucker, G. S.; Viero, M. P.; Wiebe, D.

2011-11-01

36

An automatic tool to design CNN-UM programs  

Microsoft Academic Search

Programs for the Cellular Neural Network - Universal Machine are usually designed explicitly, and there is no method to create them automatically. In this paper we present a tool, based on a genetic approach, capable of determining what CNN templates compose a CNN-UM program performing a given image processing task, and in which order they must be applied to the

Giovanni Egidio Pazienza; K. Karacs

2007-01-01

37

Samuel Huntingtons demokratische Wellen — viel Lärm um Gischt?  

Microsoft Academic Search

Zusammenfassung  In Vorausschau auf den DVPW-Kongress zum Thema, Politik — Wissenschaft — Öffentlichkeit‘ stellt sich die Frage nach der Beziehung\\u000a zwischen wissenschaftlichem und öffentlichem Erfolg politologischer Arbeit. Samuel Huntingtons im Fach vielzitiertes, aber\\u000a auch bei einem breiteren Publikum höchst erfolgreiches Werk über die so genannte, Dritte Welle‘ der Demokratisierung wird\\u000a hier exemplarisch analysiert, um seinen Erfolgsbedingungen nachzuspüren. Die Analyse erweist, dass

Ruth Zimmerling

2003-01-01

38

HABILIDADES SOCIAIS E PROBLEMAS DE COMPORTAMENTO DE ALUNOS COM DEFICIÊNCIA MENTAL, ALTO E BAIXO DESEMPENHO ACADÊMICO1 SOCIAL SKILLS AND BEHAVIOR PROBLEMS IN STUDENTS WITH MENTAL RETARDATION, HIGH AND LOW ACADEMIC PERFORMANCE  

Microsoft Academic Search

RESUMO: as habilidades sociais vêm sendo amplamente reconhecidas como importante componente do processo de escolarização especialmente dos alunos com deficiência mental. A revisão da literatura evidencia escassez de pesquisas que focalizam a inclusão desses alunos no sistema regular de ensino. Considerando tal situação, este estudo teve como objetivos: avaliar e comparar o desempenho social (habilidades sociais e problemas de comportamento)

Andréa Regina Rosin-PINOLA; Zilda Aparecida; Pereira DEL PRETTE; Almir DEL PRETTE

39

A 1.29 um2 full CMOS ultra-low power SRAM cell with 0.12 um spacer-on-stopper (SOS) CMOS technology  

Microsoft Academic Search

We have developed a 1.29 um2 full CMOS SRAM cell for low power applications, which is the world-smallest one by using 0.12 um single gate CMOS technology and optical enhancement techniques for extending use of 248 nm KrF lithography. It includes (1) 0.28 um pitch contacts formed by aerial image controlled patterns on phase shift mask (PSM) and photo resist

Sung-Bong Kim; Do-Hyung Kim; Kwang-Ok Koh; Yong Park; Han-Shin Lee; Jai-Kyun Park; Joon-Yong Joo; Jin-Ho Kim; Byung-Joon Hwang; Moo-Sung Kim; Ji-Young Lee; Suk-Joo Lee; Seung-Hyun Park; Jung-In Hong; Moon-Yong Lee

2001-01-01

40

Um estudo espectrofotométrico da variável cataclísmica V3885 Sgr  

NASA Astrophysics Data System (ADS)

Variáveis Cataclísmicas são sistemas binários cerrados compostos de uma anã vermelha que transfere matéria para uma anã branca, em sistemas não magnéticos ocorre a formação de um disco de acresção em torno da anã branca. V3885 Sgr é uma variável cataclísmica classificada como sendo do tipo nova-like. É apresentado um estudo espectrofotométrico de V3885 Sgr de alta resolução temporal feito na região do visível. A região observada é centrada em Ha e abrange também a linha de HeI 6678. O primeiro resultado obtido neste estudo é a determinação do período orbital a partir de medidas da velocidade radial da linha de Ha como sendo 0,20716071(22) dias, resolvendo inconsistências quanto a esse valor na literatura e definindo uma efeméride a longo prazo para o sistema. Com este período e as medidas de velocidade radial do perfil de linha de Ha foi construído um diagrama de massas, através do qual restringimos as massas das componentes estelares do sistema e limitamos a inclinação orbital do sistema. Foram construídos diagramas de Greenstein para as linhas de Ha e HeI, onde os espectros médios em cada intervalo de fase são representados lado a lado em escala de cinza, indicando a existência de uma emissão intensa proveniente da parte posterior do disco. A partir da tomografia Doppler obtivemos perfis de emissividade radial para o disco tanto para a linha de Ha como para HeI. Os resultados obtidos são comparados com os de outros sistemas estudados com a mesma técnica. Serão apresentados também resultados da tomografia de flickering para o sistema.

Ribeiro, F. M. A.; Diaz, M. P.

2003-08-01

41

XMM survey of 12um selected galaxies (Brightman+, 2011)  

NASA Astrophysics Data System (ADS)

We present an X-ray spectral analysis of 126 galaxies of the 12um galaxy sample (Rush et al. 1993, Cat. VII/157). By studying this sample at X-ray wavelengths, we aim to determine the intrinsic power, continuum shape and obscuration level in these sources. We improve upon previous works by the use of superior data in the form of higher signal-to-noise ratio spectra, finer spectral resolution and a broader bandpass from XMM-Newton. We pay particular attention to Compton thick active galactic nucleus (AGN) with the help of new spectral fitting models that we have produced, which are based on Monte Carlo simulations of X-ray radiative transfer, using both a spherical and torus geometry, and taking into account Compton scattering and iron fluorescence. (8 data files).

Brightman, M.; Nandra, K.

2011-11-01

42

Genotyping of 73 UM-SCC head and neck squamous cell carcinoma cell lines  

PubMed Central

Background We established multiple UM-SCC (University of Michigan Squamous Cell Carcinoma) cell lines. With time, these have been distributed to other labs all over the world. Recent scientific discussions have noted the need to confirm the origin and identity of cell lines in grant proposals and journal articles. We genotyped the UM-SCC cell lines in our collection to confirm their unique identity. Design Early passage UM-SCC cell lines were genotyped and photographed. Results Thus far, 73 unique head and neck UM-SCC cell lines (from 65 donors including 21 lines from 17 females) were genotyped. In 7 cases separate cell lines were established from the same donor. Conclusions These results will be posted on the U of M Head and Neck SPORE Tissue Core website for other investigators to confirm that the UM-SCC cells used in their laboratories have the correct features. Publications using UM-SCC cell lines should confirm the genotype.

Brenner, J. Chad; Graham, Martin P.; Kumar, Bhavna; Saunders, Lindsay M.; Kupfer, Robbi; Lyons, Robert H.; Bradford, Carol R.; Carey, Thomas E.

2011-01-01

43

A high performance active pixel sensor with 0.18um CMOS color imager technology  

Microsoft Academic Search

A high performance 0.18 um CMOS image sensor technology has been successfully developed and fully characterized. 3T active pixel sensor (APS) with non-silicide source\\/drain process is provided to reduce dark current and increase photoresponse. By optimizing photodiode junction profile with the appropriate thermal cycle, the dark current can be drastically reduced. Small pixel pitch 2.8um~4.0um demonstrates the low dark current

Shou-Gwo Wuu; Ho-Ching Chien; Dun-Nian Yaung; Chien-Hsien Tseng; C. S. Wang; Chin-Kung Chang; Yu-Kung Hsaio

2001-01-01

44

The UM/CTIO Magellanic Cloud Emission-line Survey  

NASA Astrophysics Data System (ADS)

The interstellar medium (ISM) is no longer thought to be a quiescent distribution of gas, but rather a dynamic and complex interaction of the ambient gas and dust with stellar winds, HII regions, planetary nebulae (PNe), supernovae (SNe), supernova remnants (SNRs), superbubbles, and gigantic supershells. Nowhere is this more apparent than in images of the ionized gas in the Magellanic Clouds. Their relative proximity and low extinction make them the ideal laboratories in which to study the ionized component of the ISM, its constituents, its energetics, and its interaction with the underlying stellar populations. We have begun an optical emission-line survey of these two nearby galaxies, the UM/CTIO Magellanic Cloud Emission-line Survey (MCELS). Together with parallel surveys at other wavelengths, it will provide the foundation upon which to build a deeper understanding of the ISM in the Clouds (and other galaxies), from small scales (~ 1 pc) to global scales. Taking advantage of the wide field of view of the UM/CTIO Curtis Schmidt telescope coupled to the sensitivity and large area of a STIS 2K CCD, we will obtain H alpha, [S II], and [O III] images of the central 8x8 degrees of the Large Magellanic Cloud and of the central 3.5 x 4.5 degrees of the Small Magellanic Cloud, covering most of the gaseous extent of both Clouds with a resolution of ~ 4". Survey observations began in November 1995, and we have completed approximately 75% of the imaging as of the end of the 1997/1998 Cloud season. The survey will provide definitive samples of wind-blown bubbles, PNe, and SNRs, as well as detailed and calibrated emission-line observations of HII regions, superbubbles, and supergiant shells. We will discuss the scientific objectives of the survey, describe the survey parameters and strategies, and present some of the recent results from analysis of preliminary datasets. Furthermore, we will describe the plans for making the digital Emission-line Atlas of the Magellanic Clouds publically available, providing a rich, homogeneous dataset to serve as the groundwork for further investigations into all aspects of the ISM, well beyond the scope of our own work.

Smith, R. C.; MCELS Team

45

Desempenho de um trator operando em solo com diferentes tipos de cobertura vegetal  

Microsoft Academic Search

RESUMO: A eficiência de um trator para desenvolver esforço tratório depende da interação entre o rodado e o solo, envolvendo um complexo conjunto de fatores: característica do rodado, patinagem, transferência de peso do trator, tipo de solo, umidade, estado de compactação, tipo de cobertura do solo, entre outros, que proporcionam diferentes condições de trabalho e interferem no desempenho do trator.

Antonio Gabriel Filho; Suedêmio de L. Silva; Alcir J. Modolo; João C. M. da Silveira

2004-01-01

46

The UM/CTIO Magellanic Cloud Emission-line Survey  

NASA Astrophysics Data System (ADS)

The interstellar medium (ISM) is no longer thought to be a quiescent distribution of gas, but rather a dynamic and complex interaction of the ambient gas and dust with stellar winds, H ii regions, planetary nebulae (PNe), supernovae (SNe), supernova remnants (SNRs), superbubbles, and gigantic supershells. Nowhere is this more apparent than in the Magellanic Clouds. Their relative proximity and low extinction make them the ideal laboratories in which to study the ISM, its constituents, its energetics, and its interaction with the underlying stellar populations. We have begun an optical emission-line survey of these two nearby galaxies which, together with parallel surveys at other wavelengths, will provide the foundation upon which to build a deeper understanding of the ISM in the Clouds (and other galaxies), from small scales ( ~ 1 pc) to global scales. Taking advantage of the wide field of view of the UM/CTIO Curtis Schmidt telescope coupled to the sensitivity and large area of the newly available STIS 2K CCD, we will obtain H alpha, [S ii], and [O iii] images of the central 8(deg) x 8(deg) of the Large Magellanic Cloud and of the central 3.5(deg) x 4.5(deg) of the Small Magellanic Cloud, covering most of the gaseous extent of both Clouds. Survey observations began in November 1995, and we completed almost 30% of the imaging in the 1995-96 Cloud season. The survey will provide definitive samples of wind-blown bubbles, PNe, and SNRs, as well as detailed and calibrated emission-line observations of HII regions, superbubbles, and supergiant shells. We will discuss the scientific objectives of the survey, describe the survey parameters and strategies, and present some of the first images from the survey. Furthermore, we will describe the plans for making the digital Emission-line Atlas of the Magellanic Clouds publically available, providing a rich, homogeneous dataset to serve as the groundwork for further investigations into all aspects of the ISM, well beyond the scope of our own work.

Smith, R. C.; Bregman, J.; Chu, Y.-H.; Ciardullo, R.; Jacoby, G. H.; Kennicutt, R.; Oey, M. S.; Winkler, P. F.; Zaritsky, D.

1996-09-01

47

Confusion-Limited 70um Imaging of the GOODS Hubble Deep Field North  

NASA Astrophysics Data System (ADS)

We propose confusion-limited MIPS 70um imaging of the GOODS Hubble Deep Field North (HDF-N). The goal of these observations is to determine the infrared properties of the highest redshift sources detectable by the MIPS on Spitzer. In particular, we will derive source counts at the faintest possible depths and measure the infrared luminosity function out to z~1.5. We will also measure the 70um/24um flux density ratios to constrain what fraction of the infrared background arises from infrared-cool, starburst dominated luminous infrared galaxies versus infrared-warm AGN. Ultraluminous infrared galaxies contribute significantly to the total star-formation at high-redshift and are expected to be detected at flux levels near the confusion limit of the MIPS-70 band. Due to the much lower than expected in-flight performance of the 70um detectors and the loss of over half the array due to cabling issues, the planned observations of the HDF-N by the MIPS-GTO team will not reach the confusion level or the depth required to detect high-redshift sources at 70um. We propose to observe the HDF-N field to the ultimate depth at 70um. These observations are motivated by the GOODS philosophy of obtaining the deepest possible images from NASA's Great Observatories (HST, Chandra, and Spitzer) and will greatly build upon our knowledge of the high-redshift universe by probing the far-infrared band to unprecedented depths.

Frayer, David; Chary, Ranga-Ram; Dickinson, Mark; Elbaz, David; Fadda, Dario; Henderson, David; Mobasher, Bahram; Surace, Jason; Teplitz, Harry; Yan, Lin

2004-09-01

48

Characterization of Human Laryngeal Primary and Metastatic Squamous Cell Carcinoma Cell Lines UM-SCC-17A and UM-SCC-17B1  

Microsoft Academic Search

The squamous cell carcinoma (SCC) cell lines UM-SCC-17A and -17B were derived, respectively, from the primary laryngeal cancer and a mctastatic neck tumor of a patient who failed to respond to radiation therapy but achieved long-term remission after surgery. The karyotypes of both cell lines and a subline of 17A were pseudodiploid and stable in multiple in vitro passages. Several

Thomas E. Carey; Daniel L. Van Dyke; Maria J. Worsham; Carol R. Bradford; V. Ramesh Babu; Donald R. Schwartz; Sandra Hsu; Shan R. Baker

1989-01-01

49

The evolution of type 1 AGN at 15um from the ELAIS  

Microsoft Academic Search

We present the first preliminary estimate of the evolution of type 1 AGNs at\\u000a15 um. A new sample of sources selected from the ELAIS-S1 survey has been used\\u000atogether with the RMS sample. The ELAIS-S1 survey covers an effective area of\\u000a2.2 deg^2 (total: 4 deg^2) down to 1.2 mJy at 15 um. Spectroscopic\\u000aidentifications have been carried out

F. La Franca; I. Matute; C. Gruppioni; D. Alexander

2000-01-01

50

High performance 0.25-um CMOS color imager technology with non-silicide source\\/drain pixel  

Microsoft Academic Search

A high performance 0.25 um CMOS image sensor technology has been developed to overcome device scaling and process issues. Non-silicide source\\/drain pixel (3 transistors, 3.3 um×3.3 um, fill factor: 28%) is provided to reduce dark current and increase photoresponse. By optimizing thermal oxide in STI structure, double ion implanted source\\/drain junction and using H2 annealing, the dark current can be

Shou-Gwo Wuu; Dun-Nian Yaung; Chien-Hsien Tseng; Ho-Ching Chien; Chung S. Wang; Yean-Kuen Hsiao; Chin-Kung Chang; B. J. Chang

2000-01-01

51

Manutenção da independência em idosos saudáveis: fórmula para um envelhecimento bem sucedido  

Microsoft Academic Search

1 realizou um interessante estudo na cidade de São Paulo que avaliou a expectativa de vida de homens e mulheres e os anos vividos com e sem incapacidade funcional. Ele chegou à conclusão que apesar da expectativa de vida das mulheres ser superior ao dos homens, elas apresentam maior proporção de anos vividos com incapacidade funcional. Chegar aos 90 anos,

Camargos MCS

52

Use of "um" in the Deceptive Speech of a Convicted Murderer  

ERIC Educational Resources Information Center

Previous studies have demonstrated a link between language behaviors and deception; however, questions remain about the role of specific linguistic cues, especially in real-life high-stakes lies. This study investigated use of the so-called filler, "um," in externally verifiable truthful versus deceptive speech of a convicted murderer. The data…

Villar, Gina; Arciuli, Joanne; Mallard, David

2012-01-01

53

Lensed QSO UM673/Q0142-100 VRi light curves (Ricci+, 2013)  

NASA Astrophysics Data System (ADS)

The Table contains the light curves, in the V, R, and i bands, of the two lensed components of the quasar UM673. The Table also contains the light curve of the "B+G" component, obtained by superposing the flux of the fainter B component and the flux of the lens galaxy. (1 data file).

Ricci, D.; Elyiv, A.; Finet, F.; Wertz, O.; Alsubai, K.; Anguita, T.; Bozza, V.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Dreizler, S.; Gerner, T.; Glitrup, M.; Grundahl, F.; Hardis, S.; Harpsoe, K.; Hinse, T. C.; Hornstrup, A.; Hundertmark, M.; Jorgensen, U. G.; Kains, N.; Kerins, E.; Liebig, C.; Maier, G.; Mancini, L.; Masi, G.; Mathiasen, M.; Penny, M.; Proft, S.; Rahvar, S.; Scarpetta, G.; Sahu, K.; Schaefer, S.; Schoenebeck, F.; Schmidt, R.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Thoene, C. C.; Wambsganss, J.; Zimmer, F.; Zub, M.; Surdej, J.

2013-02-01

54

Avaliação de Processo de um Programa de Manejo de Estresse Ocupacional The Process Evaluation of an Occupational Stress Management Program  

Microsoft Academic Search

Resumo Este artigo descreve metas intermediárias alcançadas e atitudes dos participantes frente a um programa de manejo de estresse ocupacional. Participaram 74 funcionários de uma universidade, dos quais 42 foram designados para uma intervenção multimodal de manejo de estresse e 32 para um treinamento em habilidades sociais. Os resultados, coletados por medidas observacionais, evidenciaram que as metas intermediárias foram alcançadas

Sheila Giardini Murta

55

ESTUDO DOS PARÂMETROS DO MODELO DE VAZAMENTOS DE UM SETOR DA REDE DE DISTRIBUIÇÃO DE ÁGUA DE PIRACICABA-SP  

Microsoft Academic Search

Resumo - O presente estudo visa avaliar as perdas por vazamento para um setor da rede de distribuição de água da cidade de Piracicaba, SP, Brasil. Para tanto, utiliza-se um procedimento iterativo de avaliação hidráulica que considera as perdas por vazamento e a dependência das demandas com a pressão, acoplado ao simulador hidráulico EPANET 2 (Rossman, 2000), com vistas à

Alexandre Kepler Soares; Luisa Fernanda; Ribeiro Reis

56

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

NASA Astrophysics Data System (ADS)

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

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

2005-08-01

57

On the Compact H II Galaxy UM 408 as Seen by GMOS-IFU: Physical Conditions  

Microsoft Academic Search

We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial distribution of emission lines and line ratios, kinematics, plasma parameters, and oxygen abundances as well the integrated properties over an area of 3''×4farcs4 equivalent with ~750 pc × 1100 pc located in the

Patricio Lagos; Eduardo Telles; Casiana Muñoz-Tuñón; Eleazar R. Carrasco; François Cuisinier; Guillermo Tenorio-Tagle; Guillermo

2009-01-01

58

Isoalantolactone Inhibits UM-SCC-10A Cell Growth via Cell Cycle Arrest and Apoptosis Induction  

PubMed Central

Isoalantolactone is a sesquiterpene lactone compound isolated from the roots of Inula helenium L. Previous studies have demonstrated that isoalantolactone possesses antifungal, anti-bacterial, anti-helminthic and anti-proliferative properties in a variety of cells, but there are no studies concerning its effects on head and neck squamous cell carcinoma (HNSCC). In the present study, an MTT assay demonstrated that isoalantolactone has anti-proliferative activity against the HNSCC cell line (UM-SCC-10A). Immunostaining identified that this compound induced UM-SCC-10A cell apoptosis but not necrosis. To explain the molecular mechanisms underlying its effects, flow cytometry and western blot analysis showed that the apoptosis was associated with cell cycle arrest during the G1 phase, up-regulation of p53 and p21, and down-regulation of cyclin D. Furthermore, our results revealed that induction of apoptosis through a mitochondrial pathway led to up-regulation of pro-apoptotic protein expression (Bax), down-regulation of anti-apoptotic protein expression (Bcl-2), mitochondrial release of cytochrome c (Cyto c), reduction of mitochondrial membrane potential (MMP) and activation of caspase-3 (Casp-3). Involvement of the caspase apoptosis pathway was confirmed using caspase inhibitor Z-VAD-FMK pretreatment. Together, our findings suggest that isoalantolactone induced caspase-dependent apoptosis via a mitochondrial pathway and was associated with cell cycle arrest in the G1 phase in UM-SCC-10A cells. Therefore, isoalantolactone may become a potential drug for treating HNSCC.

Wu, Minjun; Zhang, Hua; Hu, Jiehua; Weng, Zhiyong; Li, Chenyuan; Li, Hong; Zhao, Yan; Mei, Xifan; Ren, Fu; Li, Lihua

2013-01-01

59

Simultaneous Retrieval of Kinetic Temperature and CO2 Volume Mixing Ratio in the Mesosphere and Lower Thermosphere From Measurements of 15um and 4.3um Earth Limb Emission Under Non-LTE Conditions  

Microsoft Academic Search

The SABER instrument on TIMED will measure CO2 15um limb emission to approximately 120 km in altitude for the purpose of determining kinetic temperature (Tk). Because CO2 volume mixing ratio (vmr) departs from its well-mixed value in the mesosphere and lower thermosphere (MLT), CO2 vmr must be retrieved simultaneously with Tk. SABER will measure CO2 4.3um limb emission to 130

C. J. Mertens; M. G. Mlynczak; M. Lopez-Puertas; P. P. Wintersteiner; R. H. Picard; J. R. Winick; L. L. Gordley; J. M. Russell

2002-01-01

60

Spectral reflectance of carbonate minerals in the visible and near infrared (0.35-2.55 um): Anhydrous carbonate minerals  

Microsoft Academic Search

Reflectance spectroscopy in the visible and near infrared (0.35-2.55 um) offers a rapid, inexpensive, nondestructive technique for determining the mineralogy and gaining information on the minor element chemistry of carbonate minerals and rocks. Spectra of all commonly occurring anhydrous end-member carbonate minerals contain seven strong absorption bands at wavelengths >1.6 um due to vibrations of the carbonate radical. Positions, widths,

Susan J. Gaffey

1987-01-01

61

UM-EC-1, a New Hypodiploid Human Cell Line Derived from a Poorly Differentiated Endometrial Cancer1  

Microsoft Academic Search

The University of Michigan endomctrial carcinoma cell line UM-EC- 1 was derived from a poorly differentiated endometrial adenocarcinoma of a 66-yr-old white female. Cell cultures were started using both tumor expiants and a cell suspension obtained from collagenase-treated tumor tissue. The collagenase-derived cell suspension gave rise to monolayer cultures which grew rapidly from the outset. This subline of UM-EC-1 has

Seija E. Grenman; Daniel L. Van Dyke; Maria J. Worsham; Fernando del Rosario; James A. Roberts; Kenneth D. McClatchey; Donald R. Schwartz; V. Ramesh Babu; Thomas E. Carey

1988-01-01

62

A questionnaire-based (UM-PDHQ) study of hallucinations in Parkinson's disease  

PubMed Central

Background Hallucinations occur in 20–40% of PD patients and have been associated with unfavorable clinical outcomes (i.e., nursing home placement, increased mortality). Hallucinations, like other non-motor features of PD, are not well recognized in routine primary/secondary clinical practice. So far, there has been no instrument for uniform characterization of hallucinations in PD. To this end, we developed the University of Miami Parkinson's disease Hallucinations Questionnaire (UM-PDHQ) that allows comprehensive assessment of hallucinations in clinical or research settings. Methods The UM-PDHQ is composed of 6 quantitative and 14 qualitative items. For our study PD patients of all ages and in all stages of the disease were recruited over an 18-month period. The UPDRS, MMSE, and Beck Depression and Anxiety Inventories were used for comparisons. Results and Discussion Seventy consecutive PD patients were included in the analyses. Thirty-one (44.3%) were classified as hallucinators and 39 as non-hallucinators. No significant group differences were observed in terms of demographics, disease characteristics, stage, education, depressive/anxiety scores or cognitive functioning (MMSE) between hallucinators and non-hallucinators. Single mode hallucinations were reported in 20/31 (visual/14, auditory/4, olfactory/2) whereas multiple modalities were reported in 11/31 patients. The most common hallucinatory experience was a whole person followed by small animals, insects and reptiles. Conclusion Using the UM-PDHQ, we were able to define the key characteristics of hallucinations in PD in our cohort. Future directions include the validation of the quantitative part of the questionnaire than will serve as a rating scale for severity of hallucinations.

Papapetropoulos, Spiridon; Katzen, Heather; Schrag, Anette; Singer, Carlos; Scanlon, Blake K; Nation, Daniel; Guevara, Alexandra; Levin, Bonnie

2008-01-01

63

Uma Visão do Universo Segundo um Grupo de Alunos do Ensino Médio de São Paulo  

NASA Astrophysics Data System (ADS)

A astronomia, embora seja uma ciência popular, com inúmeras descobertas de interesse público, ainda é apresentada desconsiderando-se os aspectos históricos e científicos relacionados ao seu desenvolvimento, sendo geralmente veiculada nos meios de comunicação de maneira pouco esclarecedora e não raro com imprecisões. Neste trabalho analisou-se a concepção de um grupo de estudantes de Ensino Médio sobre conceitos de astronomia, visando identificar sua visão de mundo a respeito do Universo, envolvendo idéias sobre espaço e tempo. Para issso, foi aplicado um questionário em três escolas da grande São Paulo em um espaço amostral de 270 alunos. Constatou-se que, embora o ensino de astronomia esteja previsto nos PCNEM, os resultados obtidos na pesquisa mostram que há grande deficiência no conhecimento dos temas investigados. Nesse sentido, verificou-se que apenas 20% dos alunos eram capazes de relacionar a sucessão das semanas com as fases da lua, enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra. Por outro lado, somente 23% dos alunos tinham noções das distâncias entre os objetos celestes próximos da Terra e 56% conseguiram relacionar o Big Bang com a origem do Universo. Finalmente, constatou-se que 37% reconheciam o ano-luz como uma unidade de distância e 60% reconheciam o Sol como sendo uma estrela. Apesar de 60% dos alunos indicarem que a escola é a principal fonte para aquisição dos conhecimentos de astronomia, conclui-se que seus conceitos nessa área ainda são inadequados, havendo necessidade de ampliação e aprimoramento da abordagem desses conteúdos nos ambientes escolares.

Elias, D. S.; Araújo, M.; Amaral, L. H.; Voelzke, M. R.; Araújo, M.

2005-08-01

64

University AlbUM: A Digital Collection of University of Maryland Images  

NSDL National Science Digital Library

The Old Line State has long been home to a number of fine institutions of higher education, and the flagship public university is the University of Maryland in College Park. Their library system has been involved in creating a number of digital collections, and the impetus for this particular offering was the University's 150th anniversary celebration. Drawing on their broad archive of historical photographs, they have created the University AlbUM website to intrigue and entice those who might wish to learn a bit more about the University's past. Visitors to the site can browse the photographs via a set of themes, including "Sports", "Agriculture", "Campus + Buildings", "Events", and "People". Those persons with a temporal bent may wish to browse the photographs by decade to find documents such as minutes from the campus literary society and illustrations from various campus publications.

65

Origin and characteristics of yardangs in the Um Al-Rimam depressions (N Kuwait)  

NASA Astrophysics Data System (ADS)

Although Arabia hosts one of the largest deserts in the world, studies regarding aeolian erosional features in general and yardangs in particular are rare. The principal aim of this study is to delineate and investigate the various forms of yardangs in the Um Al-Rimam depressions in the northern part of Kuwait. The study area consists of two main depressions connected by neck area made up of continental sediments. Both depressions are surrounded by a dissected escarpment and their floors host muddy playas. On lithological bases, three main types of yardang have been identified: 7 yardangs are sculptured in sandstones of Lower Fars Formation (Lower to Middle Miocene), 23 are carved in calcretic rocks of Ghar Formation (Oligocene to Lower Miocene), and 11 yardangs are developed in Quaternary sediments. Their mean orientation NW (297°) coincides with the prevailing direction of the strong local northwesterly wind called the shamal. The average length/width ratio is 1.5:1. The wide geographic distribution of yardangs around the margins of the northern depression is due to sand blasting. This is explained by the annual sand accumulation measured in the study area where the northern depression shows 143 times higher accumulation than the southern depression, the neck area and the platform above the depressions. Also, the field measurements for annual erosional rates show that the sides of the yardangs are more affected by erosion compared to their middle parts. Remarkably slight mineralogical variations were detected within the surface sediments of Um Al-Rimam depressions and the Quaternary muddy yardangs which indicate a common origin. The age of yardangs is unknown but annual erosional rates on a small Quaternary muddy yardang suggest that they range in age between 44 and 1500 years depending on yardang size. It is believed, as indicated from field observation and interpretation of aerial photos, that the majority of yardangs are pre-existing bedrock forms. These forms were developed by paleo-surface hydrological processes which were modified by wind action in latter phase.

Al-Dousari, Ali. M.; Al-Elaj, Maraheb; Al-Enezi, Eqbal; Al-Shareeda, Abdulaziz

2009-03-01

66

"Um, I Can Tell You're Lying": Linguistic Markers of Deception versus Truth-Telling in Speech  

ERIC Educational Resources Information Center

Lying is a deliberate attempt to transmit messages that mislead others. Analysis of language behaviors holds great promise as an objective method of detecting deception. The current study reports on the frequency of use and acoustic nature of "um" and "like" during laboratory-elicited lying versus truth-telling. Results obtained using a…

Arciuli, Joanne; Mallard, David; Villar, Gina

2010-01-01

67

"Um, I Can Tell You're Lying": Linguistic Markers of Deception versus Truth-Telling in Speech  

ERIC Educational Resources Information Center

|Lying is a deliberate attempt to transmit messages that mislead others. Analysis of language behaviors holds great promise as an objective method of detecting deception. The current study reports on the frequency of use and acoustic nature of "um" and "like" during laboratory-elicited lying versus truth-telling. Results obtained using a…

Arciuli, Joanne; Mallard, David; Villar, Gina

2010-01-01

68

Determinação da massa de júpiter a partir das órbitas de seus satélites: um experimento didático  

NASA Astrophysics Data System (ADS)

Este trabalho apresenta o roteiro piloto de uma prática observacional em astronomia, junto com os primeiros resultados obtidos nesta fase de implementacão. O projeto, que será executado em duas etapas, visa introduzir noções de Astronomia a alunos do Ensino Médio e iniciantes nos cursos de Física. O experimento consiste em medir as órbitas dos satélites Galileanos e, a partir da análise dos dados coletados, verificar a validade da Lei das órbitas de Kepler, determinando a massa do planeta Júpiter. Em uma primeira etapa, as observações serão feitas utilizando um telescópio Meade LX200 10" e câmera CCD para obter uma seqüência de imagens do planeta, que possibilitará medir o movimento de seus satélites. A segunda etapa terá início a partir do funcionamento do telescópio em modo robótico, com a possibilidade de observações via internet por instituições de ensino. Para o desenvolvimento deste experimento foram inicialmente coletadas várias imagens de Júpiter obtidas com os instrumentos citados acima. Estas imagens serviram como base para confecção dos roteiros para a experiência no nível médio e superior. Os roteiros serão inicialmente apresentados em uma home-page. Nela também se buscará uma contextualização histórica da experiência bem como o estabelecimento de relações com professores e alunos, propostas metodológicas e a disponibilização dos programas computacionais necessários para a utilização "on-line" pelos usuários. O projeto conta com apoio da Fundação VITAE.

Schlickmann, M. S.; Saito, R. K.; Becker, D. A.; Rezende, M. F., Jr.; Cid Fernandes, R.

2003-08-01

69

Design of a Monolithic Active Pixel Sensor in ST 0.13UM Technology  

NASA Astrophysics Data System (ADS)

This paper presents the architecture of a new Monolithic Active Pixel Sensor chip designed in ST Microelectronics 0.13um CMOS technology at the Roma Tre University INFN Section. The two goals of the chip are: technology characterization and test of data sparsification architecture, implemented to fulfil requirements of the future high energy physics experiments. In the intended applications the commonly used 'off-line' and 'off-chip' signal processing is not possible due to a huge bandwidth needed to read out all pixels at a satisfactory speed. The authors propose a new approach for the on-line data sparsification which consists in implementation of the full on-pixel signal processing. The difficulties that had to be overcame are: limited on-pixel silicon area for fitting all the necessary electronic circuitry, forced use of only NMOS transistors in the sensing area, current and threshold mismatch typical for CMOS submicron technologies. Finally special care had to be taken to avoid crosstalk from digital to analog signals.

Mlynarczyk, Janusz; Spirit, Eleuterio; Bulgheroni, Antonio

2008-06-01

70

Flux and color variations of the doubly imaged quasar UM673?  

NASA Astrophysics Data System (ADS)

Aims: With the aim of characterizing the flux and color variations of the multiple components of the gravitationally lensed quasar UM673 as a function of time, we have performed multiepoch and multiband photometric observations with the Danish telescope at the La Silla Observatory. Methods: The observations were carried out in the VRi spectral bands during four seasons (2008-2011). We reduced the data using the point spread function photometric technique as well as aperture photometry. Results: Our results show for the brightest lensed component some significant decrease in flux between the first two seasons (+ 0.09/+ 0.11/+ 0.05 mag) and a subsequent increase during the following ones (- 0.11/- 0.11/- 0.10 mag) in the V/R/i spectral bands, respectively. Comparing our results with previous studies, we find smaller color variations between these seasons as compared with previous ones. We also separate the contribution of the lensing galaxy from that of the fainter and close lensed component. Based on data collected by MiNDSTEp with the Danish 1.54 m telescope at the ESO La Silla ObservatoryLight curves are only available in electronic from at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/551/A104

Ricci, D.; Elyiv, A.; Finet, F.; Wertz, O.; Alsubai, K.; Anguita, T.; Bozza, V.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dodds, P.; Dominik, M.; Dreizler, S.; Gerner, T.; Glitrup, M.; Grundahl, F.; Hardis, S.; Harpsøe, K.; Hinse, T. C.; Hornstrup, A.; Hundertmark, M.; Jørgensen, U. G.; Kains, N.; Kerins, E.; Liebig, C.; Maier, G.; Mancini, L.; Masi, G.; Mathiasen, M.; Penny, M.; Proft, S.; Rahvar, S.; Scarpetta, G.; Sahu, K.; Schäfer, S.; Schönebeck, F.; Schmidt, R.; Skottfelt, J.; Snodgrass, C.; Southworth, J.; Thöne, C. C.; Wambsganss, J.; Zimmer, F.; Zub, M.; Surdej, J.

2013-03-01

71

BUDDA (Bulge/Disk Decomposition Analysis) - um novo programa para análise estrutural de galáxias  

NASA Astrophysics Data System (ADS)

Tem sido prática comum nos últimos anos estudar a distribuição de luminosidade em galáxias fazendo uso da informação contida em toda a imagem da galáxia, já que esta técnica tem se mostrado muito mais confiável do que o simples ajuste de perfis radiais de luminosidade. Através destes estudos bidimensionais, melhores resultados tem sido obtidos na análise e.g. do Plano Fundamental, de correlações entre os parâmetros estruturais de galáxias, de sub-estruturas como barras e anéis nucleares etc. Apresentamos um novo código bidimensional, o BUDDA, de análise estrutural de galáxias, que será disponibilizado para a comunidade. Desenvolvido por nós, o código determina os parâmetros estruturais de galáxias de forma prática e robusta, e pode ser aplicado genericamente em qualquer estudo sobre a formação, evolução e estrutura de galáxias. O programa ainda permite a avaliação direta de sub-estruturas, através de imagens residuais que são obtidas ao se subtrair, das imagens originais, bojo e disco sintéticos que melhor representam essas componentes da galáxia sob consideração. Será apresentada a forma de utilização do código, bem como séries de testes que atestam a sua funcionalidade. Além disso, os resultados da aplicação do código em uma amostra de 51 galáxias serão expostos como exemplo prático, e do seu enorme potencial de uso.

Gadotti, D. A.; de Souza, R. E.; Dos Anjos, S.

2003-08-01

72

Amiloidose sistêmica do tipo AA em um canino Shar-pei Chinês Systemic Amyloidosis type AA in a dog Chinese Shar-Pei  

Microsoft Academic Search

A deposição sistêmica do amilóide pode ocorrer de forma hereditária, a predisposição ocorre principalmente em gatos Abissínios e cães da raça Shar-pei Chinês. Um canino da raça Shar-pei Chinês foi encaminhado para necropsia no Setor de Patologia Veterinária da UFRGS. O canino apresentava aumento de volume dos membros posteriores e nos seus exames bioquímicos havia um aumento significativo de creatinina

Luciana Sonne; Eduardo Conceição de Oliveira; Adriana da Silva Santos; Saulo Petinatti Pavarini; Pedro Soares Bezerra Júnior; Nadia Aline; Bobbi Antoniassi; Jardel Pereira Tessari; David Driemeier

73

Estudo-piloto com clozapina em hospital público: resultados de um ano de acompanhamento Clozapine pilot study in a public hospital: one-year follow-up results  

Microsoft Academic Search

Objetivos: Estudo-piloto prospectivo e naturalístico para avaliação da efetividade e segurança do uso da clozapina em pacientes esquizofrênicos crônicos resistentes, em tratamento num hospital psiquiátrico público - Instituto Municipal Nise da Silveira, localizado no Rio de Janeiro, RJ. Método: Foram tratados com clozapina, por um período de um ano, monitorados com hemogramas semanais nas 18 primeiras semanas e mensais nas

Carlos Eduardo da Rocha

74

UM-SCC-104: a new human papillomavirus-16 containing head and neck squamous cell carcinoma cell line  

PubMed Central

BACKGROUND Few human papillomavirus (HPV)-positive head and neck squamous cell carcinoma (HNSCC) cell lines exist. We established UM-SCC-104, a new HPV(+) HNSCC cell linefrom a recurrent oral cavity tumor, and characterized it for the presence of cancer stem cells (CSC). METHODS Tumor cells were tested for biomarker expression by immunohistology and the presence of HPV was assessed by several methods. RESULTS UM-SCC-104 has a unique genotype, contains HPV-16 and expresses E6/E7. Inoculation of (Aldehyde Dehydrogenase) ALDH(+) and ALDH(?) cells in an immunocompromised mouse resulted in tumor growth from the ALDH(+) cells after 6 weeks that recapitulated the histology of the primary, while ALDH(?) cells did not produce tumors. CONCLUSIONS UM-SCC-104, a new HPV-16, CSC-containing HNSCC cell line will aid in studying recurrent HPV(+) tumors. The aggressive nature of this tumor is consistent with high uniform expression of EGFR and a functionally significant proportion of ALDH(+) CSC.

Tang, Alice L.; Davis, Samantha J.; Owen, John H.; Graham, Martin P.; Czerwinski, Michael J.; Park, Jung Je; Walline, Heather; Stoerker, Jay; McHugh, Jonathan B.; Chepeha, Douglas; Bradford, Carol R.; Carey, Thomas E.; Prince, Mark E.

2012-01-01

75

Spectral reflectance of carbonate minerals in the visible and near infrared (0.35-2.55 um): Anhydrous carbonate minerals  

NASA Astrophysics Data System (ADS)

Reflectance spectroscopy in the visible and near infrared (0.35-2.55 um) offers a rapid, inexpensive, nondestructive technique for determining the mineralogy and gaining information on the minor element chemistry of carbonate minerals and rocks. Spectra of all commonly occurring anhydrous end-member carbonate minerals contain seven strong absorption bands at wavelengths >1.6 um due to vibrations of the carbonate radical. Positions, widths, and spacing between carbonate bands are diagnostic of mineralogy. Differences in positions of carbonate bands between spectra of different minerals are primarily due to differences in mass of the major cation, with cation electronegativity playing a secondary role. Spectra of calcite group minerals may contain absorption features due to transition metal cations such as Fe and Mn, which can also aid in mineral identification. Spectra confirm the occurrence of both cations in the divalent state. Fe2+ produces a broad feature near 1.1 um whose position and degree of doubling are related to the size and degree of distortion of the octahedral site, as predicted by crystal field theory. Mn2+ and Fe2+ produce very strong absorption bands in the minerals for which they are the major cation (rhodochrosite and siderite, respectively), making it easy to distinguish these from other carbonate minerals, even when presence of water bands may make it difficult to determine accurately carbonate band positions.

Gaffey, Susan J.

1987-02-01

76

NE VIII lambda 774 and time variable associated absorption in the QSO UM 675  

NASA Astrophysics Data System (ADS)

We discuss measurements of Ne VIII lambda 774 absorption and the time variability of other lines in the za approximately equal ze absorption system of the ze = 2.15 QSO UM 675 (0150-203). The C IV lambda 1549 and N V 1240 doublets at za = 2.1340 (shifted approximately 1500 km/s from ze strengthened by a factor of approximately 3 between observations by Sargent, Boksenberg and Steidel (1981 November) and our earliest measurements (1990 November and December). We have no information on changes in other za approximately equal ze absorption lines. Continued monitoring since 1990 November shows no clear changes in any of the absorptions between approximately 1100 and 1640 A rest. The short timescale of the variability (less than or approximately equal to 2.9 yr rest) strongly suggests that the clouds are dense, compact, close to the QSO, and photoionized by the QSO continuum. If the line variability is caused by changes in the ionization, the timescale requires densities greater than approximately 4000/cu cm. Photoionization calculations place the absorbing clouds within approximately 200 pc of the continuum source. The full range of line ionizations (from Ne VIII lambda 774 to C III lambda 977) in optically thin gas (no Lyman limit) implies that the absorbing regions span a factor of more than approximately 10 in distance or approximately 100 in density. Across these regions, the total hydrogen (H I + H II) column ranges from a few times 1018/sq cm in the low-ionization gas to approximately 1020/sq cm where the Ne VIII doublet forms. The metallicity is roughly solar or higher, with nitrogen possibly more enhanced by factors of a few. The clouds might contribute significant line emission if they nearly envelop the QSO. The presence of highly ionized Ne VIII lambda 774 absorption near the QSO supports recent studies that link za approximately equal to ze systems with X-ray 'wamr absorbers. We show that the Ne VIII absorbing gas would itself produce measurable warm absorption -- characterized by bound-free O VII or O VIII edegs near 0.8 keV -- if the column densities were NH greater than or approximately equal to 1021/sq cm (for solar abundances).

Hamann, Fred; Barlow, Thomas A.; Beaver, E. A.; Burbidge, E. M.; Cohen, Ross D.; Junkkarinen, Vesa; Lyons, R.

1995-04-01

77

Microwave window breakdown experiments and simulations on the UM/L-3 relativistic magnetron  

NASA Astrophysics Data System (ADS)

Experiments have been performed on the UM/L-3 (6-vane, L-band) relativistic magnetron to test a new microwave window configuration designed to limit vacuum side breakdown. In the baseline case, acrylic microwave windows were mounted between three of the waveguide coupling cavities in the anode block vacuum housing and the output waveguides. Each of the six 3 cm deep coupling cavities is separated from its corresponding anode cavity by a 1.75 cm wide aperture. In the baseline case, vacuum side window breakdown was observed to initiate at single waveguide output powers close to 20 MW. In the new window configuration, three Air Force Research Laboratory-designed, vacuum-rated directional coupler waveguide segments were mounted between the coupling cavities and the microwave windows. The inclusion of the vacuum side power couplers moved the microwave windows an additional 30 cm away from the anode apertures. Additionally, the Lucite microwave windows were replaced with polycarbonate windows and the microwave window mounts were redesigned to better maintain waveguide continuity in the region around the microwave windows. No vacuum side window breakdown was observed in the new window configuration at single waveguide output powers of 120+MW (a factor of 3 increase in measured microwave pulse duration and factor of 3 increase in measured peak power over the baseline case). Simulations were performed to investigate likely causes for the window breakdown in the original configuration. Results from these simulations have shown that in the original configuration, at typical operating voltage and magnetic field ranges, electrons emitted from the anode block microwave apertures strike the windows with a mean kinetic energy of 33 keV with a standard deviation of 14 keV. Calculations performed using electron impact angle and energy data predict a first generation secondary electron yield of 65% of the primary electron population. The effects of the primary aperture electron impacts, combined with multiplication of the secondary populations, were determined to be the likely causes of the poor microwave window performance in the original configuration.

Hoff, B. W.; Mardahl, P. J.; Gilgenbach, R. M.; Haworth, M. D.; French, D. M.; Lau, Y. Y.; Franzi, M.

2009-09-01

78

Microwave window breakdown experiments and simulations on the UM/L-3 relativistic magnetron.  

PubMed

Experiments have been performed on the UM/L-3 (6-vane, L-band) relativistic magnetron to test a new microwave window configuration designed to limit vacuum side breakdown. In the baseline case, acrylic microwave windows were mounted between three of the waveguide coupling cavities in the anode block vacuum housing and the output waveguides. Each of the six 3 cm deep coupling cavities is separated from its corresponding anode cavity by a 1.75 cm wide aperture. In the baseline case, vacuum side window breakdown was observed to initiate at single waveguide output powers close to 20 MW. In the new window configuration, three Air Force Research Laboratory-designed, vacuum-rated directional coupler waveguide segments were mounted between the coupling cavities and the microwave windows. The inclusion of the vacuum side power couplers moved the microwave windows an additional 30 cm away from the anode apertures. Additionally, the Lucite microwave windows were replaced with polycarbonate windows and the microwave window mounts were redesigned to better maintain waveguide continuity in the region around the microwave windows. No vacuum side window breakdown was observed in the new window configuration at single waveguide output powers of 120+MW (a factor of 3 increase in measured microwave pulse duration and factor of 3 increase in measured peak power over the baseline case). Simulations were performed to investigate likely causes for the window breakdown in the original configuration. Results from these simulations have shown that in the original configuration, at typical operating voltage and magnetic field ranges, electrons emitted from the anode block microwave apertures strike the windows with a mean kinetic energy of 33 keV with a standard deviation of 14 keV. Calculations performed using electron impact angle and energy data predict a first generation secondary electron yield of 65% of the primary electron population. The effects of the primary aperture electron impacts, combined with multiplication of the secondary populations, were determined to be the likely causes of the poor microwave window performance in the original configuration. PMID:19791954

Hoff, B W; Mardahl, P J; Gilgenbach, R M; Haworth, M D; French, D M; Lau, Y Y; Franzi, M

2009-09-01

79

On the Compact H II Galaxy UM 408 as Seen by GMOS-IFU: Physical Conditions  

NASA Astrophysics Data System (ADS)

We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial distribution of emission lines and line ratios, kinematics, plasma parameters, and oxygen abundances as well the integrated properties over an area of 3''×4farcs4 equivalent with ~750 pc × 1100 pc located in the central part of the galaxy. The starburst in this area is resolved into two giant regions of about 1farcs5 and 1'' (~375 and ~250 pc) diameter, respectively and separated 1.5-2'' (~500 pc). The extinction distribution concentrate its highest values close but not coincident with the maxima of H? emission around each one of the detected regions. This indicates that the dust has been displaced from the exciting clusters by the action of their stellar winds. The ages of these two regions, estimated using H? equivalent widths, suggest that they are coeval events of ~5 Myr with stellar masses of ~104 M sun. We have also used [O III]/H? and [S II]/H? ratio maps to explore the excitation mechanisms in this galaxy. Comparing the data points with theoretical diagnostic models, we found that all of them are consistent with excitation by photoionization by massive stars. The H? emission line was used to measure the radial velocity and velocity dispersion. The heliocentric radial velocity shows an apparent systemic motion where the east part of the galaxy is blueshifted, while the west part is redshifted, with a relative motion of ~10 km s-1. The velocity dispersion map shows supersonic values typical for extragalactic H II regions. We derived an integrated oxygen abundance of 12+log(O/H) = 7.87 summing over all spaxels in our field of view. An average value of 12+log(O/H) = 7.77 and a difference of ?(O/H) = 0.47 between the minimum and maximum values (7.58 ± 0.06-8.05 ± 0.04) were found, considering all data points where the oxygen abundance was measured. The spatial distribution of oxygen abundance does not show any significant gradient across the galaxy. On the other hand, the bulk of data points are lying in a region of ±2? dispersion (with ? = 0.1 dex) around the average value, confirming that this compact H II galaxy, like other previously studied dwarf irregular galaxies, is chemically homogeneous. Therefore, the new metals processed and injected by the current star formation episode are possibly not observed and reside in the hot gas phase, whereas the metals from previous events are well mixed and homogeneously distributed through the whole extent of the galaxy.

Lagos, Patricio; Telles, Eduardo; Muñoz-Tuñón, Casiana; Carrasco, Eleazar R.; Cuisinier, François; Tenorio-Tagle, Guillermo

2009-06-01

80

ON THE COMPACT H II GALAXY UM 408 AS SEEN BY GMOS-IFU: PHYSICAL CONDITIONS  

SciTech Connect

We present Integral Field Unit GMOS-IFU data of the compact H II galaxy UM 408, obtained at the Gemini South telescope, in order to derive the spatial distribution of emission lines and line ratios, kinematics, plasma parameters, and oxygen abundances as well the integrated properties over an area of 3''x4.''4 equivalent with {approx}750 pc x 1100 pc located in the central part of the galaxy. The starburst in this area is resolved into two giant regions of about 1.''5 and 1'' ({approx}375 and {approx}250 pc) diameter, respectively and separated 1.5-2'' ({approx}500 pc). The extinction distribution concentrate its highest values close but not coincident with the maxima of H{alpha} emission around each one of the detected regions. This indicates that the dust has been displaced from the exciting clusters by the action of their stellar winds. The ages of these two regions, estimated using H{beta} equivalent widths, suggest that they are coeval events of {approx}5 Myr with stellar masses of {approx}10{sup 4} M {sub sun}. We have also used [O III]/H{beta} and [S II]/H{alpha} ratio maps to explore the excitation mechanisms in this galaxy. Comparing the data points with theoretical diagnostic models, we found that all of them are consistent with excitation by photoionization by massive stars. The H{alpha} emission line was used to measure the radial velocity and velocity dispersion. The heliocentric radial velocity shows an apparent systemic motion where the east part of the galaxy is blueshifted, while the west part is redshifted, with a relative motion of {approx}10 km s{sup -1}. The velocity dispersion map shows supersonic values typical for extragalactic H II regions. We derived an integrated oxygen abundance of 12+log(O/H) = 7.87 summing over all spaxels in our field of view. An average value of 12+log(O/H) = 7.77 and a difference of {delta}(O/H) = 0.47 between the minimum and maximum values (7.58 {+-} 0.06-8.05 {+-} 0.04) were found, considering all data points where the oxygen abundance was measured. The spatial distribution of oxygen abundance does not show any significant gradient across the galaxy. On the other hand, the bulk of data points are lying in a region of {+-}2{sigma} dispersion (with {sigma} = 0.1 dex) around the average value, confirming that this compact H II galaxy, like other previously studied dwarf irregular galaxies, is chemically homogeneous. Therefore, the new metals processed and injected by the current star formation episode are possibly not observed and reside in the hot gas phase, whereas the metals from previous events are well mixed and homogeneously distributed through the whole extent of the galaxy.

Lagos, Patricio; Telles, Eduardo [Observatorio Nacional, Rua Jose Cristino, 77, Rio de Janeiro, 20921-400 (Brazil); Munoz-Tunon, Casiana [Instituto de Astrofisica de Canarias, Via Lactea s/n, 38200 La Laguna (Spain); Carrasco, Eleazar R. [Gemini Observatory/AURA, Southern Operations Center, Casilla 603, La Serena (Chile); Cuisinier, Francois [Observatorio do Valongo UFRJ, Ladeira do Pedro Antonio 43, Rio de Janeiro 20080-090 (Brazil); Tenorio-Tagle, Guillermo [Instituto Nacional de Astrofisica Optica y Electronica, AP 51, 72000 Puebla (Mexico)], E-mail: plagos@iac.es, E-mail: etelles@on.br, E-mail: cmt@iac.es, E-mail: rcarrasco@gemini.edu, E-mail: francois@ov.ufrj.br, E-mail: gtt@inaoep.mx

2009-06-15

81

User's manual (UM) for the enhanced logistics intratheater support tool (ELIST) database utility segment version 8.1.0.0 for solaris 7.  

SciTech Connect

This document is the User's Manual (UM) for the Enhanced Logistics Intratheater Support Tool (ELIST) Database Utility Segment. It tells how to use its features to administer ELIST database user accounts.

Dritz, K.

2002-03-06

82

UM4D4+ (CDw60) T Cells Are Compartmentalized into Psoriatic Skin and Release Lymphokines That Induce a Keratinocyte Phenotype Expressed in Psoriatic Lesions  

Microsoft Academic Search

UM4D4 (CDw60), the surface molecule of a novel antigen- independent T-cell activation pathway, was found to be highly expressed on lesional psoriatic T cells. To examine whether UM4D4 represents a T-cell activation pathway for psoriatic T cells, a T-cell line was initiated from an acute skin lesion and cloned by limiting dilution. Clonality was verified by analysis of T-cell receptor

Ole Baadsgaard; Peggy Tong; James T. Elder; Erik R. Hansen; Vincent Ho; Craig Hammerberg; Gunhild Lange-Vejlsgaard; David A. Fox; Gary Fisher; Lawrence S. Chan; John J. Voorhees; Kevin D. Cooper

1990-01-01

83

Imagens do céu ontem e hoje - um multimídia interativo de astronomia e uma nova exposição no MAST  

NASA Astrophysics Data System (ADS)

"Imagens do Céu Ontem e Hoje" é o título de uma nova exposição que está sendo inaugurada no Museu de Astronomia e Ciências Afins (MCT), que inclui experimentos interativos, maquetes, réplicas e 8 terminais de computador com um multimídia interativo sobre Astronomia para consulta dos visitantes. O multimídia apresenta um conteúdo bastante extenso, que engloba quase todos os temas em Astronomia, consistindo numa fonte de divulgação e pesquisa para um público que vai das crianças até estudantes universitários. O conteúdo está distribuído em mais de 500 páginas de texto divididas em 4 módulos: "O Universo", "Espectroscopia", "Telescópios" e "Observando o Céu". Cada módulo é subdividido em 5 seções, em média, cada uma iniciada por uma animação que ilustra os temas a serem abordados na seção. Ao final da animação, uma lista de temas é apresentada sob o título "Saiba Mais". Para exemplificar, o módulo "O Universo" contém as seguintes seções: "O Universo visto pelo homem", "Conhecendo o Sistema Solar", "Indo além do Sistema Solar", "Nossa Galáxia, a Via-Láctea" e "Indo mais além, a imensidão do Universo". A seção "Conhecendo o Sistema Solar", por sua vez, tem os seguintes temas: "A origem do Sistema Solar", "O Sol", "Os planetas", "Satélites, asteróides, cometas e outros bichos..." e "O Sistema Solar em números". Cada texto é repleto de imagens, quadros, desenhos, esquemas, etc, além de passatempos ao final de cada seção, incluindo jogos interativos, quadrinhos e curiosidades, que auxiliam o aprendizado de forma divertida. Apresentamos neste trabalho as idéias gerais que permearam a produção da exposição, e uma viagem pelo multimídia para exemplificar sua estrutura e conteúdo. O multimídia será posteriormente disponibilizado para o público externo pela página eletrônica do MAst e/ou por intermédio de uma publicação comercial.

Caretta, C. A.; Lima, F. P.; Requeijo, F.; Vieira, G. G.; Alves, F.; Valente, M. E. A.; de Almeida, R.; de Garcia, G. C.; Quixadá, A. C.

2003-08-01

84

Implementation of the Fast-JX Photolysis scheme into the UKCA component of the MetUM chemistry climate model  

NASA Astrophysics Data System (ADS)

Atmospheric chemistry is driven by photolytic reactions, making their modelling a crucial component of atmospheric models. We describe the implementation and validation of Fast-JX, a state of the art model of interactive photolysis, into the MetUM chemistry climate model. This allows for interactive photolysis frequencies to be calculated in the troposphere and augments the calculation of the frequencies in the stratosphere by accounting for clouds and aerosols in addition to ozone. In order to demonstrate the effectiveness of this new photolysis scheme we employ new methods of validating the model, including techniques for sampling the model to compare to flight track and satellite data.

Telford, P. J.; Abraham, N. L.; Archibald, A. T.; Braesicke, P.; Dalvi, M.; Morgenstern, O.; O'Connor, F. M.; Richards, N. A. D.; Pyle, J. A.

2012-10-01

85

The U. S. Geological Survey, Digital Spectral Library: Version 1 (0.2 to 3.0um)  

USGS Publications Warehouse

We have developed a digital reflectance spectral library, with management and spectral analysis software. The library includes 498 spectra of 444 samples (some samples include a series of grain sizes) measured from approximately 0.2 to 3.0 um . The spectral resolution (Full Width Half Maximum) of the reflectance data is <= 4 nm in the visible (0.2-0.8 um) and <= 10 nm in the NIR (0.8-2.35 um). All spectra were corrected to absolute reflectance using an NIST Halon standard. Library management software lets users search on parameters (e.g. chemical formulae, chemical analyses, purity of samples, mineral groups, etc.) as well as spectral features. Minerals from borate, carbonate, chloride, element, halide, hydroxide, nitrate, oxide, phosphate, sulfate, sulfide, sulfosalt, and the silicate (cyclosilicate, inosilicate, nesosilicate, phyllosilicate, sorosilicate, and tectosilicate) classes are represented. X-Ray and chemical analyses are tabulated for many of the entries, and all samples have been evaluated for spectral purity. The library also contains end and intermediate members for the olivine, garnet, scapolite, montmorillonite, muscovite, jarosite, and alunite solid-solution series. We have included representative spectra of H2O ice, kerogen, ammonium-bearing minerals, rare-earth oxides, desert varnish coatings, kaolinite crystallinity series, kaolinite-smectite series, zeolite series, and an extensive evaporite series. Because of the importance of vegetation to climate-change studies we have include 17 spectra of tree leaves, bushes, and grasses. The library and software are available as a series of U.S.G.S. Open File reports. PC user software is available to convert the binary data to ascii files (a separate U.S.G.S. open file report). Additionally, a binary data files are on line at the U.S.G.S. in Denver for anonymous ftp to users on the Internet. The library search software enables a user to search on documentation parameters as well as spectral features. The analysis system includes general spectral analysis routines, plotting packages, radiative transfer software for computing intimate mixtures, routines to derive optical constants from reflectance spectra, tools to analyze spectral features, and the capability to access imaging spectrometer data cubes for spectral analysis. Users may build customized libraries (at specific wavelengths and spectral resolution) for their own instruments using the library software. We are currently extending spectral coverage to 150 um. The libraries (original and convolved) will be made available in the future on a CD-ROM.

Clark, Roger N.; Swayze, Gregg A.; Gallagher, Andrea J.; King, Trude V. V.; Calvin, Wendy M.

1993-01-01

86

Silver and silver-bearing minerals at the Um Samiuki volcanogenic massive sulphide deposit, Eastern Desert, Egypt  

NASA Astrophysics Data System (ADS)

The Um Samiuki Zn Cu Pb Ag mineralisation, south Eastern Desert, Egypt is hosted by felsic volcanic rocks which form part of the 712-Ma-old, east-west-trending Shadli Volcanic Belt. Two major occurrences of massive sulphides are present at the top of rhyolitic breccia in the Western and Eastern mine areas. In each occurrence, a bornite-bearing zone is overlain by a pyrite-chalcopyrite-bearing zone and underlain by a disseminated, Cu-depleted zone. In the massive sulphide ore, sphalerite, chalcopyrite, pyrite, galena, bornite and tetrahedrite tennantite are major minerals, whereas arsenopyrite, pyrrhotite, molybdenite and magnetite are accessory phases. Covellite and digenite are common secondary minerals. Bornite, tetrahedrite tennantite and covellite contain high amounts of silver (averages of 1.97, 1.39 and 1.82 wt% respectively). Based on mineralogical balance calculations, bornite and covellite accommodate 80% of silver in the Um Samiuki deposit. Ag was incorporated in the crystal structure of the early-crystallised copper sulphides and sulphosalts and silver minerals. The temperature, sequential precipitation of the fluids and the structure of the crystallising phases control the distribution of silver. Post-depositional deformation and metamorphic processes caused liberation, remobilisation and redeposition of silver within the massive sulphides.

Shalaby, Ibrahim M.; Stumpfl, Eugen; Helmy, Hassan M.; El Mahallawi, Mahmoud M.; Kamel, Omar A.

2004-10-01

87

A Visão do Universo Segundo a Concepção de um Grupo de Alunos do Ensino Médio de São Paulo  

NASA Astrophysics Data System (ADS)

Nesse trabalho foi identificada por meio de um questionário a visão de mundo sobre o Universo espaço e tempo entre 270 estudantes de Ensino Médio de três escolas de São Paulo. Constatou-se pouco conhecimento dos temas investigados sendo que apenas 20% dos alunos relacionaram as semanas com as fases da lua enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra e 23% tinham noções das distâncias entre objetos celestes próximos da Terra. Enquanto 56% conseguiram relacionar o Big Bang com a origem do Universo verificou-se que 37% reconheciam ano-luz como unidade de distância e 60% reconheciam o Sol como uma estrela. Apesar de 60% dos alunos indicarem a escola como principal fonte dos conhecimentos de astronomia seus conceitos ainda são inadequados havendo necessidade de aprimoramento da abordagem desses conteúdos pois apesar de popular a astronomia é veiculada de maneira pouco esclarecedora e com imprecissões.

Araújo, M. A. A.; Elias, D. C. N.; Amaral, L. H.; Araújo, M. S. T.; Voelzke, M. R.

2005-12-01

88

The yfhQ gene of Escherichia coli encodes a tRNA:Cm32/Um32 methyltransferase  

PubMed Central

Background Naturally occurring tRNAs contain numerous modified nucleosides. They are formed by enzymatic modification of the primary transcripts during the complex RNA maturation process. In model organisms Escherichia coli and Saccharomyces cerevisiae most enzymes involved in this process have been identified. Interestingly, it was found that tRNA methylation, one of the most common modifications, can be introduced by S-adenosyl-L-methionine (AdoMet)-dependent methyltransferases (MTases) that belong to two structurally and phylogenetically unrelated protein superfamilies: RFM and SPOUT. Results As a part of a large-scale project aiming at characterization of a complete set of RNA modification enzymes of model organisms, we have studied the Escherichia coli proteins YibK, LasT, YfhQ, and YbeA for their ability to introduce the last unassigned methylations of ribose at positions 32 and 34 of the tRNA anticodon loop. We found that YfhQ catalyzes the AdoMet-dependent formation of Cm32 or Um32 in tRNASer1 and tRNAGln2 and that an E. coli strain with a disrupted yfhQ gene lacks the tRNA:Cm32/Um32 methyltransferase activity. Thus, we propose to rename YfhQ as TrMet(Xm32) according to the recently proposed, uniform nomenclature for all RNA modification enzymes, or TrmJ, according to the traditional nomenclature for bacterial tRNA MTases. Conclusion Our results reveal that methylation at position 32 is carried out by completely unrelated TrMet(Xm32) enzymes in eukaryota and prokaryota (RFM superfamily member Trm7 and SPOUT superfamily member TrmJ, respectively), mirroring the scenario observed in the case of the m1G37 modification (introduced by the RFM member Trm5 in eukaryota and archaea, and by the SPOUT member TrmD in bacteria).

Purta, Elzbieta; van Vliet, Francoise; Tkaczuk, Karolina L; Dunin-Horkawicz, Stanislaw; Mori, Hirotada; Droogmans, Louis; Bujnicki, Janusz M

2006-01-01

89

Geochemical and K Ar age constraints on the Late Neoproterozoic (?) gneisses at Um Tenassib area, north Eastern Desert, Egypt  

NASA Astrophysics Data System (ADS)

Wadi Um Tenassib metamorphic rocks consist mainly of biotite gneiss and biotite-hornblende gneiss with subordinate intercalations of amphibolite, migmatitic gneiss, and aplitic granite. Biotite-hornblende gneiss, biotite gneiss, and aplitic granite are geochemically characterized and their cooling ages are determined by using the K Ar method on biotite. The Um Tenassib gneisses (UTG) range in composition from quartz diorite/monzodiorite to granodiorite. They were derived from igneous rocks that pertain to calc alkaline and metaluminous to weakly peraluminous affinities and were generated in continental volcanic arc setting. REE patterns of the UTG are moderately fractionated (LaN/LuN = 5.9 7.5) relative to those of the aplitic granite (LaN/LuN = 33). The similarity in the geochemical characteristics and REE patterns of both gneiss types indicate their magmatic consanguinity. Amphiboles of the UTG biotite-hornblende gneisses are mainly hornblende, together with few paragasitic hornblende and edenite. Plagioclase composition is oligoclase to andesine (An21 46) in the biotite-hornblende gneiss, and oligoclase (An11 26) in the biotite gneiss. Mineral chemistry of amphibole and plagioclase indicate that the gneisses were metamorphosed under low- to medium-pressure of 2.6 6.4 kbar and at medium to high temperatures of 660 755 °C. The K Ar biotite cooling ages (seven samples) range from 585 ± 12 Ma to 598 ± 12 Ma for the UTG, except one biotite-hornblende gneiss sample gives age of 577 ± 11 Ma. These ages suggest a latest metamorphic cooling event at ca. 585 600 Ma time span, which is consistent with the proposed cooling ages of ˜600 Ma for the Elat metamorphic rocks [Cosca, M.A., Shimron, A., Caby, R., 1999. Late Precambrian metamorphism and cooling in the Arabian Nubian Shield: petrology and 40Ar/39Ar geochronology of metamorphic rocks of the Elat area (southern Israel). Precamb. Res. 98, 107 127]. It may indicate that the metamorphism of the UTG might have been contemporaneous with the suggested regional metamorphism at 620 ± 10 Ma for Sinai metamorphic rocks (Cosca et al., 1999) and/or the emplacement age at 614 Ma for the granodiorite in the study area [Stern, R.J., Hedge, C.E., 1985. Geochronological and isotopic constraints on the Late Precambrian crustal evolution in the Eastern Desert of Egypt. Am. J. Sci. 285, 97 127]. These ages also lie within the range of magmatic activity of the Younger Granites in the North Eastern Desert (575 600 Ma).

Eliwa, Hassan A.

2007-05-01

90

The Workload of the UMS Faculty. A Report to the Joint Chairs of the Senate Budget and Taxation Committee and the House Appropriations Committee.  

ERIC Educational Resources Information Center

|This report provides the results of a study of faculty workloads in the University of Maryland System (UMS) during the 1994-95 academic year. It was found that 19,446 course units were taught by full-time (FT) faculty at degree-granting institutions, an increase of 158 course units from the previous year while the number of FT faculty decreased…

Maryland Univ. System Administration, Adelphi.

91

Problemas ambientales, agricultura y globalización en América Latina  

Microsoft Academic Search

La globalización y la progresiva liberalización de los mercados agropecuarios mundiales representarán un importante estímulo para que los países latinoamericanos intenten aumentar la productividad y la competitividad internacional de sus producciones agrícolas y ganaderas, en consonancia con un modelo de crecimiento económico basado en la búsqueda de beneficios a corto plazo. Esto conducirá sin duda alguna a la profundización de

José Antonio Segrelles Serrano

2007-01-01

92

Solución Numérica del Problema de Control de Contaminación del Aire  

Microsoft Academic Search

This work presents a stochastic outer approximation algorithm to solve air pollution control problem while minimizing the control costs which thereby occur. These air quality standards give rise to an infinite number of constraints and this is a semi-infinite programming problem.

Mahecha Bohórquez

93

LOCALIZA: una herramienta SIG para resolver problemas de localización óptima  

Microsoft Academic Search

LOCALIZA software is a tool that increases GIS applications possibilities to analyze and solve optimal facility location problems. This system, that it is being migrated from Delphi to Python, allows to evaluate how existing facility supply covers the demand. On the other hand, it includes the resolution of an elevated number of classic location-allocation models and, in some cases, includes

J. Bosque Sendra; F. Palm; M. Gómez

94

Neuropatía inducida por quimioterapia: un problema no resuelto  

Microsoft Academic Search

IntroductionChemotherapy-induced peripheral neuropathy (CIPN) is the most prevalent neurological complication of cancer treatment, affecting a third of all patients who undergo chemotherapy. CIPN impairs functional capacity, compromises the quality of life and results in dose reduction or cessation of chemotherapy, representing a dose-limiting side effect of many antineoplastic drugs. In addition to classic, novel agents, bortezomib and oxaliplatin have been

R. Velasco; J. Bruna

2010-01-01

95

EL USO DEL ADRIAMICIN:UN PROBLEMA SIN SOLUCIÓN AÚN  

Microsoft Academic Search

aunque ésta se halla limitada por su cardiotoxicidad. Para este trabajo, estudio piloto diseñado aunque ésta se halla limitada por su cardiotoxicidad. Para este trabajo, estudio piloto diseñado aunque ésta se halla limitada por su cardiotoxicidad. Para este trabajo, estudio piloto diseñado para determinar si los indicadores del estrés oxidativo pudieran ser marcadores tempranos para determinar si los indicadores del

Belkis Martínez Sánchez; Rubén Castillo Jiménez

96

TABAQUISMO: UN PROBLEMA DE SALUD PÚBLICA EN EL PERÚ  

Microsoft Academic Search

Tobacco use is currently a public health problem which represents a global epidemic responsible of an enormous damage to people's health. Worldwide, 1100 million people smoke, 4 million die every year because of diseases related to tobacco use, and it is estimated that the death toll will be as high as 10 million people for year 2030; 7 million of

Luis Pinillos A; Mercedes Quesquén P; Félix Bautista G; Ebert Poquioma R

2005-01-01

97

Tratamiento canonico del problema de Poincaré. Movimiento del polo.  

NASA Astrophysics Data System (ADS)

The rotational motion for a rigid Earth model with a homogeneous liquid core has been obtained using Hamilton's equations. From the canonical equations for the precessional und nutational motions in an inertial frame, the corresponding equations in an Earth fixed frame are deduced. The linearized equations obtained for polar motion and liquid core motion are equivalent to the Moritz's equations (1980).

Romero, P.; Sevilla, M. J.

98

Effects of basic fibroblast growth factor on the differentiation, growth, and viability of a new human medulloblastoma cell line (UM-MB1).  

PubMed Central

We presently report the effects of human recombinant basic fibroblast growth factor (bFGF) on a newly established medulloblastoma cell line, UM-MB1. This predominantly adherent cell line has a mean doubling time of 39.3 hours and was found, by karyotypic analysis, to be near triploid. UM-MB1 consists of undifferentiated cells expressing markers of neuronal lineage such as the three neurofilament subunits as well as neuron-specific enolase, synaptophysin, and microtubule-associated proteins 1 and 5. In contrast, no immunoreactivity for glial fibrillary acidic protein was evident. When exposed to nanomolar amounts of bFGF, UM-MB1 cells began to extend neurite-like processes with arborizations and growth-cone-like structures. In addition, UM-MB1 cells treated with bFGF exhibited ultrastructural alterations that reflect their enhanced differentiation as well as the increased expression of at least one of the neurofilament subunits as evidenced both immunocytochemically and on Western blots. Furthermore, bFGF significantly decreased UM-MB1 cell growth as well as induced their death. UM-MB1 cells treated with bFGF for several days displayed DNA cleavage, nuclear shrinkage, and chromatin condensation while retaining their cytoplasmic and mitochondrial membrane integrity, all early indices of apoptosis. After this, cell death was evident with the concomitant appearance of the classical apoptotic bodies. By flow cytometry, bFGF was found to increase the proportion of cells in G1 before inducing their death by apoptosis. In conclusion, UM-MB1 cells can, when appropriately stimulated, be induced to differentiate along their neuronal lineage pathway. Their differentiation induced by bFGF, although incomplete, appears to promote or inhibit the expression of apoptotic effectors or suppressors in these cells, respectively, so to induce their death by an apoptotic-like mechanism. Images Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 9 Figure 10 Figure 11 Figure 12

Kenigsberg, R. L.; Hong, Y.; Yao, H.; Lemieux, N.; Michaud, J.; Tautu, C.; Theoret, Y.

1997-01-01

99

Jets and Outflows from Young Stellar Objects in the Carina Nebula Observed in [Fe II] 1.64 um  

NASA Astrophysics Data System (ADS)

We present [Fe II] 1.64 um imaging observations for jets and outflows from young stellar objects (YSOs) over the northern part (~24'x45') of the Carina Nebula, a massive star forming region. The observations were performed with IRIS2 of Anglo-Autralian Telescope and the seeing was ~1.5". Several jets and outflows features are detected at eight different regions, and named as forbidden emission line regions (FELRs). One new candidate for Herbig-Haro Object is identified comparing our [Fe II] images to H_alpha images of Hubble Space Telescope. FELRs have knotty or longish shapes, and distribute around the triangular area formed by three star clusters Tr 14, Tr 15, and Tr 16, which contain many massive stars. The detection rate of FELRs against previously identified YSOs is 1.4 %. We estimate the outflow rate from the [Fe II] flux based on some assumptions. The jet-driving objects are identified for three FELRs (FELR-2, -4, and -7), for which we study the relations between the outflow rate and the YSO physical parameters from the radiative transfer model fitting. The ratios of the outflow rate over the disk accretion rate are consistent for FELR-4 and -7 with the previously reported values, while it is higher for FELR-2. The masses of jet-driving objects are low or intermediate, and they are not likely to become massive stars (> 8 Ms). Other YSO physical parameters, such as luminosity and age, show reasonable relations or trends.

Shinn, Jong-Ho; Pyo, Tae-Soo; Lee, Jae-Joon; Lee, Ho-Gyu; Kim, Hyun-Jeong; Koo, Bon-Chul; Sung, Hwankyung; Chun, Moo Young; Lyo, A.-Ran; Moon, Dae-Sik; Kyeong, Jaemann; Park, Byeong-Gon; Hur, Hyeonoh; Lee, Yong-Hyun

2013-07-01

100

Decor(um)  

Microsoft Academic Search

Over the years the profession of interior design has struggled with its identity and place in the professional world of design. Practitioners and educators have conscientiously worked to distance themselves from the seemingly unattractive and `unprofessional' parts of the field, namely decoration and ornamentation. It seems, however, that no matter what steps are taken to redefine the profession and separate

Sarah Elizabeth Zenti

2011-01-01

101

InP-based monolithic integration of 1.55-um MQW laser diode and HBT driver circuit  

NASA Astrophysics Data System (ADS)

An improved fabrication process and related experiment results of an InP-based monolithic integrated transmitter OEIC with a 1.55 micrometers MQW laser diode (LD) and an InP/InGaAs heterojunction bipolar transistors (HBT) driver circuit are presented. The epitaxial structure of the laser and driver circuits were continuously grown on semi- insulating Fe-doped InP substrate by a metal-organic chemical vapor deposition system using a vertically integration. HCL, H3PO4/H2O2 and HBr/HNO3 solution system were involved as selective or nonelective wet chemical etching respectively for the epitaxies of InP, InGaAs and InGaPAs. Both a nearly-standard contact photolithography depending on a two-step exposure technique and an electrical connection related to smoothly wet chemical etching profile of InP and InGaP in the crystal direction of (01-1) were developed in the process. The laser diode with a 3-um-wide ridge waveguide forming by a double- groove process self-aligned to the metal contact of P-type region showed an average threshold current as low as about 10mA. The HBT with a 120-nm-thick base layer performed a DC current gain of about 60-70 and an emitter-collector breakdown voltage of up to 4-5V. A clear eye diagram of the monolithic transmitter under a pulsed operation with 622Mbit/s bitrate nonreturn-to-zero pseudorandom code was obtained.

Li, Xian-Jie; Zhao, Fang-Hai; Zeng, Qing-Ming; Dong, Yi; Li, Xu-hui; Yang, Shu-Ren; Cai, Ke-Li; Wang, Benzhong; Ao, Jin-Ping; Liang, Chun-Guang; Liu, ShiYong

2000-04-01

102

49. Evaluation of Catheter-Based Deliveries of 10um Gelatin Hydrogel Microsphere, a Novel Non-Viral Vehicle, in a Porcine Heart  

Microsoft Academic Search

Background: Biodegradable Gelatin hydrogel microsphere (GHM) has been reported as a novel non-viral vehicle for gene or protein therapy. However, it is unknown what catheter-based strategy is effective for the GHM delivery to the heart.Objectives: The purpose of this study was to evaluate catheter-based deliveries of 10um GHMs to the heart, by comparing the characteristics of the uptake, and by

Kozo Hoshino; Ryuichi Yoneyama; Yoshiaki Kawase; Alec M. DeGrand; John V. Frangioni; Yasuhiko Tabata; Takeshi Kimura; Toru Kita; Roger J. Hajjar; Motoya Hayase

2005-01-01

103

Retrieval of Middle Atmospheric Water Vapor From Measurements of 6.8um Earth Limb Emission Under Non-LTE Conditions  

Microsoft Academic Search

The SABER instrument on TIMED will measure 6.8um limb emission for the purpose of retrieving water vapor profiles over the range from approximately 15 to 80 km tangent height. We present a new accurate and efficient algorithm for retrieving middle atmospheric water vapor from measurements of limb emission, which rigorously includes non-local thermodynamic equilibrium (non-LTE) processes in the forward radiance

C. J. Mertens; M. G. Mlynczak; M. Lopez-Puertas; E. E. Remsberg; L. L. Gordley; J. M. Russell

2002-01-01

104

Nucleotide Sequence oftheTranscriptional Control Region ofthe Osmotically Regulated proUOperonofSalmonella typhimurium and Identification ofthe5'Endpoint oftheproUmRNA  

Microsoft Academic Search

fragment thatcontains the transcriptional control region oftheproUoperonandthecoding sequencesspecifying 290aminoacids ofthe first structural geneoftheoperon was determined. Thepredicted aminoacid sequenceoftheproduct ofthis geneshowsextensive similarity totheHisP,MaIK,andother proteins that areinner membrane-associated components ofbinding protein-dependent transport systems. SImapping andprimer extension analysis ofthe proUmRNAsrevealed several species withdifferent 5'ends. Twoofthese endpoints are sufficiently close to sequencesthathaveweaksimilarities totheconsensus-35and-10 promoter sequencesthattheyare likely todefine twotranscription start sites. However, we cannotrule outthepossibility

DAVID G. OVERDIER; ERIC R. OLSON; BRUCE D. ERICKSON; MARTINA M. EDERER; LASZLO N. CSONKAl

1989-01-01

105

Precision control of poly-gate CD by local OPC for elimination of microloading effect on 0.13-um CMOS technology  

Microsoft Academic Search

The yield impact by local non-uniformity of poly-gate CD, edge profile, and transistor performance (between larger pitch area and minimum pitch area) is no longer tolerable in advanced CMOS technology as illustrated in a 2M SRAM vehicle processed by 0.13um flow in this paper. Micro-loading effects shall be minimized for process steps in poly-gate loop (including poly patterning, hard-mask etching,

Tzy-Kuang Lee; Yao-Ching Wang; Min-hwa Chi; C. Y. Lu; C. H. Hsieh; R. G. Liu; H. J. Liao; S. S. Yang; Chih-Hao Chang

2003-01-01

106

A newly discovered DLA and associated Ly? emission in the spectra of the gravitationally lensed quasar UM673A,B  

NASA Astrophysics Data System (ADS)

The sightline to the brighter member of the gravitationally lensed quasar pair UM673A,B intersects a damped Ly? system (DLA) at z = 1.62650 which, because of its low redshift, has not been recognized before. Our high-quality echelle spectra of the pair, obtained with HIRES on the Keck I telescope, show a drop in neutral hydrogen column density N(HI) by a factor of at least 400 between UM673A and UM673B, indicating that the DLA's extent in this direction is much less than the 2.7 h-170kpc separation between the two sightlines at z = 1.62650. By re-assessing this new case together with published data on other quasar pairs, we conclude that the typical size (radius) of DLAs at these redshifts is R ~= (5 +/- 3) h-170kpc, smaller than previously realized. Highly ionized gas associated with the DLA is more extended, as we find only small differences in the CIV absorption profiles between the two sightlines. Coincident with UM673B, we detect a weak and narrow Ly? emission line which we attribute to star formation activity at a rate SFR >~ 0.2Msolaryr-1. The DLA in UM673A is metal poor, with an overall metallicity ZDLA ~= 1/30Zsolar, and has a very low internal velocity dispersion. It exhibits some apparent peculiarities in its detailed chemical composition, with the elements Ti, Ni and Zn being deficient relative to Fe by factors of 2-3. The [Zn/Fe] ratio is lower than those measured in any other DLA or Galactic halo star, presumably reflecting somewhat unusual previous enrichment by stellar nucleosynthesis. We discuss the implications of these results for the nature of the galaxy hosting the DLA. Based on data obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and NASA, and was made possible by the generous financial support of the W. M. Keck Foundation. E-mail: rcooke@ast.cam.ac.uk

Cooke, Ryan; Pettini, Max; Steidel, Charles C.; King, Lindsay J.; Rudie, Gwen C.; Rakic, Olivera

2010-12-01

107

Modelling the 11.2 um Unidentified Infrared Band using Ethylene Oxide (c-C2H4O) and Cyclopropenylidene (c-C3H2)  

NASA Astrophysics Data System (ADS)

We suggest that small carbonaceous molecules (SCMs) may be the sources of the unidentified infrared bands (UIR) and the underlying continuum. We show that the IR spectroscopy of ethylene oxide (EO, c-C2H4O) and cyclopropenylidene (CP, c-C3H2) closely correlates with the major UIR bands at 3.3, 6.2, 7.7, 8.6, and 11.2 um, the often seen strong bands at 12.7 and 16.4 um, as well as many minor features. The differences in band locations and shapes between laboratory EO absorption spectra and astrophysical UIR emission spectra are attributed to vibrational anharmonicity, Fermi resonance splitting of nearly degenerate vibration levels, and rotational envelop narrowing due to the low temperatures in space. The excitation mechanism is absorption of UV radiation, primarily Ly-alpha, by SCMs. Photon trapping for this very optically thick transition enhances the absorption by several orders of magnitude. Our abundance analysis for NGC 7027 reveals that the SCM abundance, relative to H2, is 3E-9 which compares well to radio measurements of the CP abundance range of 1E-9 - 1E-7. Radio lines of CP have been seen in numerous astronomical objects, most displaying the UIR bands. EO is also seen, but in fewer objects, none displaying the UIR bands. We theorize that in UIR objects, EO is formed on, and primarily resides on, carbonaceous grains, precluding radio detection of rotational lines. We present a detailed spectral analysis of the 11.2 um UIR band and its associated continuum. An asymmetric top rotational model is used to fit the feature profiles observed from a variety of astrophysical objects. We show that the narrower 11.2 um feature can be fit based on EO or CP rotational constants at a temperature around 10 K and the broader continuum corresponds to 200 K. We suggest laboratory experiments, astronomical observations, and theoretical investigations to further evaluate the SCM mechanism.

Bernstein, Lawrence; Lynch, D.

2010-01-01

108

Vínculos sobre um modelo de quartessência de Chaplygin usando observações do satélite chandra da fração de massa de gás em aglomerados de galáxias  

NASA Astrophysics Data System (ADS)

Observações de Supernovas do tipo Ia mostram que a expansão do Universo está acelerando. Segundo as equações de Einstein uma componente com pressão negativa (energia escura) é necessária para explicar a aceleração cósmica. Além da energia escura é usualmente admitido que no Universo há também uma matéria exótica com pressão zero, que é chamada de matéria escura. Essa componente possui um papel fundamental na formação de estruturas no Universo. Recentemente tem se explorado a possibilidade de que matéria e energia escura poderiam ser unificadas através de uma única componente, que tem sido denominada de quartessência. Um exemplo de fluido com essas características é o Gás de Chaplygin Generalizado, que possui uma equação de estado da forma p = -A/ra. Inicialmente consideramos o caso especial a = 1 (gás de Chaplygin) e vinculamos parâmetros do modelo utilizando observações em raios-X do satélite Chandra da fração de massa de gás em aglomerados de galáxias. Uma comparação dos vínculos obtidos com esse teste com outros testes, tais como supernovas e idade do Universo, mostra que esse teste é bastante restritivo. Exibiremos ainda resultados para o caso em que a curvatura é nula e o parâmetro a está compreendido no intervalo -1 < a 1.

de Souza, R. S.

2003-08-01

109

User's manual (UM) for the enhanced logistics intratheater support tool (ELIST) software segment version 8.1.0.0 for solaris 7.  

SciTech Connect

This document is the User's Manual (UM) for the Enhanced Logistics Intratheater Support Tool (ELIST) Software Segment. It tells how to use the end-user and administrative features of the segment. The instructions in Sections 4.2.1, 5.3.1, and 5.3.2 for the end-user features (Run ELIST and Run ETEdit) only cover the launching of those features in the DII COE environment; full details on the operation of ELIST and ETEdit in any environment can be found in the documents listed in Section 2.1.3 and referenced elsewhere in this document. On the other hand, complete instructions for the administrative features (Add Map Data and Delete Map Data) are presented in Sections 4.2.2, 5.3.3, and 5.3.4 of this document.

Dritz, K.

2002-03-06

110

Structural, magnetic and electrical properties of some uranium ternary germanides: UM2Ge2 (M = Rh, Ir) and U4M7Ge6 (M = Ru, Os)  

NASA Astrophysics Data System (ADS)

The crystal structures and the physical properties of U4M7Ge6 (M = Ru, Os) and UM2Ge2 (M = Rh, Ir) have been investigated. The former crystallize in the cubic structure of U4Re7Si6; U4Ru7Ge6 orders ferromagnetically at TC ~ 10-13 K whereas U4Os7Ge6 remains paramagnetic down to 4.2 K. The latter whise structures derive from the tetragonal ThCr2Si2 or CaBe2Ge2 types display limited homogeneity ranges; URh2Ge2 exhibits a dense-Kondo behaviour at low temperatures; UIr2Ge2 shows polymorphism and its physical properties are strongly influenced by its crystal structure.

Lloret, B.; Buffat, B.; Chevalier, B.; Etourneau, J.

1987-06-01

111

An integrated approach of analytical chemistry  

Microsoft Academic Search

O desenvolvimento impressionante de métodos físicos de análise oferece um número expressivo de ferramentas para determinar, simultaneamente, um grande número de elementos e compostos a um nível de concentração muito baixos. A Química Analítica de hoje fornece meios apropriados para resolver problemas técnicos e obter informações corretas sobre sistemas químicos, de maneira a orientar técnicos e as decisões mais adequadas

Miguel de la Guardia

1999-01-01

112

ADOÇÃO DE NOVOS PARADIGMAS NA ORGANIZAÇÃO E GESTÃO DE EMPREENDIMENTOS SOLIDÁRIOS: UM ESTUDO SOBRE O PROCESSO PRODUTIVO DO AÇAÍ ATRAVÉS DAS ASSOCIAÇÕES E COOPERATIVAS NO TERRITÓRIO RURAL DO BAIXO TOCANTINS – PARÁ – BRASIL  

Microsoft Academic Search

As transformações no mundo do trabalho vividas, desde o final da década de 60, pelos países capitalistas e os impactos daí resultantes sobre a reestruturação do sistema produtivo têm definido novas práticas produtivas, que precarizam as relações de trabalho, favorecem o desemprego, baixos salários e exigem novas e melhores qualificações dos trabalhadores. Nesse contexto, estes se vêem diante de um

Lucia Cristina Andrade; Roselene Souza Portela; Euzalina Silva Ferrao; Armando Lirio Souza; Adebaro Alves Reis

2008-01-01

113

Educação continuada: um levantamento de necessidades da equipe de enfermagem 1 Lifelong learning: a survey on the nursing team necessities Educación continuada: un diagnóstico de necesidades del equipo de enfermería  

Microsoft Academic Search

RESUMO: A Educação Continuada é o componente essencial dos programas de formação e desenvolvimento de recursos humanos das instituições. O desenvolvimento da equipe de enfermagem é um dos fatores que pode assegurar a qualidade do atendimento ao cliente e a sobrevivência da instituição neste cenário de mudanças e competitividade. Assim, neste estudo fizemos alguns diagnósticos através do levantamento de necessidades

Milena Froes da Silva; Fabiana Alves da Conceição; Maria Madalena Januário Leite

114

Liderança, Coesão e Satisfação em Equipas Desportivas: Um Estudo com Atletas Portugueses de Futebol e Futsal Leadership, Cohesion and Satisfaction in Sporting Teams: A Study with Portuguese Football and Futsal Athletes  

Microsoft Academic Search

Resumo Este trabalho foi realizado com 200 atletas de duas modalidades (futebol e futsal) incluídos em vários escalões desportivos e analisa a liderança dos treinadores e a coesão e satisfação dos praticantes. Para tal, utilizámos um protocolo de avaliação, com instrumentos de avaliação da liderança (Escala Multidimensional de Liderança, que avalia seis dimensões), da coesão (Questionário de Coesão em Equipas

A. Rui Gomes; Ana Patricia Pereira; Ana Raquel Pinheiro

115

Etching characteristics of organic low-k dielectrics in the helicon-wave plasma etcher for 0.15-um damascene architecture  

NASA Astrophysics Data System (ADS)

The comparative analysis of the dry etching of FLARE 2.0 and a- C:F, which represent two different depositions techniques of organic low-k polymers was investigated. In our damascene architecture, the etchings to player or hard-mask of both SIOF; SiO2 was studied. Especially, the SiOF providing lower dielectric constant than SIO2 would reduce entire effective dielectric constant. The etch rate and etching rate selectivity was optimized by changing content ratio between CHF3, N2 and O2. Furthermore, the bias power, RF power; and gas flows were changed to control the etch profile. The SEM result showed that the better etch profile can be obtained at higher bias power. There were some deviation between etching rate of blanket with the case of patterned wafer. The distribution density of the reactant etching gas in sub-um gap different from blanket surface of wafer was major dynamics. Due to this phenomena, the etching rate became nonlinear function of process time Tetch in the trenches/vias with smaller dimension.

Shieh, Jia-Min; Wei, T. C.; Liu, C. H.; Suen, Shich-Chang; Dai, Bau-Tong

2000-08-01

116

Project UM-HAUL (UnManned Heavy pAyload Unloader and Lander): The design of a reusable lunar lander with an independent cargo unloader  

NASA Astrophysics Data System (ADS)

Project UM-Haul is the preliminary design of a reusable lunar transportation vehicle that travels between a lunar parking orbit and the lunar surface. This vehicle is an indispensible link in the overall task of establishing a lunar base as defined by the NASA Space Exploration Initiative. The response to this need consists of two independent vehicles: a lander and an unloader. The system can navigate and unload itself with a minimum amount of human intervention. The design addresses structural analysis, propulsion, power, controls, communications, payload handling and orbital operations. The Lander has the capacity to decend from low lunar orbit (LLO) to the lunar surface carrying a 7000 kg payload, plus the unloader, plus propellant for ascent to LLO. The Lander employs the Unloader by way of a motorized ramp. The Unloader is a terrain vehicle capable of carrying cargoes of 8,500 kg mass and employs a lift system to lower payloads to the ground. The system can perform ten missions before requiring major servicing.

1991-04-01

117

Ho-Nee-Um Trail.  

ERIC Educational Resources Information Center

|Appreciation and concern for the preservation of our natural resources by all citizens is the primary concern of this teacher's guide for use in the elementary grades. It employes the use of a filmstrip in conjunction with a local nature trail, to guide students in developing awareness - by looking closely, listening, touching, and smelling.…

Irwin, Harriet; And Others

118

Statistical Analyses of La, Ce, Nd, Y, Nb, Ti, P, and Zr in Bedrocks and Their Significance in Geochemical Exploration at the Um Garayat Gold Mine Area, Eastern Desert, Egypt  

Microsoft Academic Search

A prospective lithochemical survey (scale 1:50,000) was carried out at the Um Garayat gold mine area within the central wadi\\u000a Allaqi shear zone. The metavolcanic samples were analyzed for Ti, P, Zr, Nb, Y, La, Nd, and Ce. The background and threshold\\u000a values were determined using histograms, box-plots, and Q-mode cluster analysis. Discriminant analysis classifies the samples\\u000a into four groups:

Ahmed M. El-Makky

2011-01-01

119

Implementation of the Fast-JX Photolysis scheme (v6.4) into the UKCA component of the MetUM chemistry-climate model (v7.3)  

NASA Astrophysics Data System (ADS)

Atmospheric chemistry is driven by photolytic reactions, making their modelling a crucial component of atmospheric models. We describe the implementation and validation of Fast-JX, a state of the art model of interactive photolysis, into the MetUM chemistry-climate model. This allows for interactive photolysis rates to be calculated in the troposphere and augments the calculation of the rates in the stratosphere by accounting for clouds and aerosols in addition to ozone. In order to demonstrate the effectiveness of this new photolysis scheme we employ new methods of validating the model, including techniques for sampling the model to compare to flight track and satellite data.

Telford, P. J.; Abraham, N. L.; Archibald, A. T.; Braesicke, P.; Dalvi, M.; Morgenstern, O.; O'Connor, F. M.; Richards, N. A. D.; Pyle, J. A.

2013-02-01

120

Controle biológico natural de pulgões (Hemiptera: Aphididae) em lavoura de trigo por parasitóides (Hymenoptera, Aphidiinae), no município de Medianeira, PR, Brasil Natural biological control of aphids (Hemiptera: Aphididae) in a wheat field by parasitoids (Hymenoptera, Aphidiinae) in Medianeira, PR, Brazil  

Microsoft Academic Search

Os pulgões são um dos principais problemas fitossanitários da cultura do trigo no sul do Brasil, sendo alvo de um programa de controle biológico por parasitóides implantado no Brasil a partir da década de 1970. A despeito do sucesso inicial rapidamente obtido não há na região oeste do Paraná nenhum estudo recente avaliando a situação atual do controle biológico dos

Luis Francisco Angeli Alves; Tânia M. V. Prestes; Agostinho Zanini; Maria F. Dalmolin

121

O DISCURSO DE ALUNOS DO ENSINO MÉDIO A RESPEITO DA \\  

Microsoft Academic Search

Resumo: O objetivo deste trabalho foi investigar os gêneros de discursos utilizados por alunos da terceira série do Ensino Médio a respeito de um dos conteúdos vinculados ao ensino de química ambiental: o estudo do gás ozônio e os problemas relacionados à degradação de sua camada na atmosfera terrestre. Os resultados apontam para um nível de envolvimento discursivo em que

Marcelo Maia Cirino; Aguinaldo Robinson de Souza

2008-01-01

122

INVESTIGAÇÕES EM SISTEMAS DE SERVIÇOS DE SAÚDE COMO FERRAMENTA PARA O ALCANCE DE PROGRAMAS DE CONTROLE DA HANSENÍASE MAIS EFETIVOS NO B RASIL* Health systems research training as a tool for more effective Hansen's disease control programmes in Brazil  

Microsoft Academic Search

RESUMO No Brasil, a hanseníase permanece como um importante problema de saúde pública. Embora um grande progresso tenha sido obtido nos Programas de Controle da Hanseníase (PCH), em todos os níveis do governo nos últimos 20 anos, algumas ações não foram potencializadas. O motivo: lacunas de informação relacionadas a áreas específicas da doença, exacerbadas pela ausência de instrumentos apropriados para

Alberto Novaes Ramos Jr; Jorg Heukelbach; Marcia Gomide; Pieter A. M. Schreuder

123

Garcinia cambogia - uma espécie vegetal como recurso terapêutico contra a obesidade?6  

Microsoft Academic Search

Resumo Atualmente, a obesidade é um problema de saúde pública mundial, tanto nos países desenvolvidos como nos em desenvolvimento, apresentando elevação de sua prevalência. A transição nutricional é um processo de modificações seqüenciais no padrão de nutrição e consumo que acompanha mudanças econômicas, sociais e demográficas, e mudanças do perfil de saúde das populações. Este trabalho objetiva abordar a comprovação

Ana C S Santos; Michelle S Alvarez; Priscila B Brandão; Ary G Silva

124

El Ruido: Un Problema para la Salud (Noise: A Health Problem).  

ERIC Educational Resources Information Center

|This booklet contains nine sections describing ways in which noise may endanger health and well-being. Sections are included on: (1) hearing loss; (2) heart disease; (3) other reactions by the body; (4) effects on the unborn; (5) special effects on children; (6) intrusion at home and work; (7) mental and social well-being; and (8) danger to life…

Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control.

125

EL PROBLEMA DE LA ADICIÓN AL TABACO: META-ANÁLISIS DE LAS INTERVENCIONES CONDUCTUALES EN ESPAÑA  

Microsoft Academic Search

En este trabajo se presentan los resultados de un estudio meta-analítico sobre la efectividad de los programas multicomponentes en el tratamiento de sujetos con adicción al tabaco. Una búsqueda exhaustiva de la literatura nos permitió identificar 16 trabajos empíricos realizados en España entre 1980 y 1996, dando lugar a un total de 37 estudios independientes que recogían datos de 1.979

Julio Sánchez Meca; José Olivares Rodríguez; Ana Isabel; Rosa Alcázar

1998-01-01

126

Uma Nova Heuristica Para Problemas de Cobertura de Conjuntos (New Heuristic for Set Covering Problems).  

National Technical Information Service (NTIS)

This work presents a new heuristic for set covering problems, based upon Continuous Surrogate relaxation and subgradient optimization. We propose an adequate step size control that provides the Surrogate bounds in few subgradient iterations, compared to o...

F. B. Lopes

1992-01-01

127

Solucion de Problemas y Procesos Cognoscitivos (Problem Solving and Cognitive Processes). Publication No. 41.  

ERIC Educational Resources Information Center

The study of problem solving is made through the analysis of the process that leads to the final answer. The type of information obtained through the study of the process is compared with the information obtained by studying the final answer. The experimental technique used permits to identify the sequence of questions (tactics) that subjects ask…

Rimoldi, Horacio J. A.

128

Soluciones analiticas AL problema de jets con velocidad de eyeccion variable EN EL tiempo.  

NASA Astrophysics Data System (ADS)

Se presenta un nuevo metodo que permite resolver de manera exacta y analitica las ecuaciones que describen un jet hipersonico con velocidad de eyeccion variable en el tiempo. El metodo se basa en consideraciones sencillas de conservacion de momento para las superficies de trabajo que se forman en el interior del jet. Como ejemplo, se presentan soluciones para jets con variacion sinusoidal en la velocidad de eyeccion, y tambien para el caso de un incremento lineal en el tiempo. Estas soluciones analiticas tienen una clara aplicacion en la interpretacion de las observaciones de jets asociados a objetos Herbig-Haro.

Canto, J.; Raga, A. C.; D'Alessio, P.

1998-11-01

129

PROBLEMAS MEDIOAMBIENTALES QUE AFECTAN LA SALUD LABORAL Y POBLACIONAL. MUNICIPIO LAJAS - 2011  

Microsoft Academic Search

Al ir creciendo las poblaciones y sus demandas, la idea del crecimiento continuado debe abrir paso a un uso más racional del medio ambiente, pero que esto sólo puede lograrse con un espectacular cambio de actitud por parte de la especie humana. El impacto de la especie humana sobre el medio ambiente ha sido comparado con las grandes catástrofes del

Ruben Carballo Herrera; Yamila Rosado Fernández; Yety Rosado Fernández

2011-01-01

130

Memória e Alteridade: O Problema das Falsas Lembranças Memory and Alterity: The False Memories Issue  

Microsoft Academic Search

As a knowledge practice, psychology appears to ignore the question of alterity, since our knowing involves knowledge of an object rather than an other. The history of theoretical and experimental psychology allows us to highlight a problem containing the issue of alterity and allowing us to produce an alternative reading of the history of the researcher\\/participant relationship: the false memory

Christian Sade Vasconcelos; Fernanda Ratto de Lima; Fernanda Rodrigues da Guia; Letícia Maria Renault de Barros

131

Colonias: Problems and Promise. Desperate Situations, Local Innovations = Colonias: Problemas y Promesa. Situaciones Dificiles, Innovaciones Locales.  

ERIC Educational Resources Information Center

|Colonias--unincorporated, low-income settlements endemic to the U.S. borderlands--have inadequate infrastructure and dismal living conditions, but also provide a creative solution to the housing dilemma faced by many border families. Colonias are most common in Texas and New Mexico, primarily as a result of weak rural planning laws, and are…

Borderlines, 1998

1998-01-01

132

Geopedología de la cuenca de Santiago: Dimensión espacial de los problemas ambientales en los suelos  

Microsoft Academic Search

Tlie research shows a description. analysis and interpretation of the pedogenetical characteristics, phisical and agronomical properiies and present use of soils. These activiries were released to identify and to evaluate the environmental problems thai affect to soils iri Scctiriago graben. Through digitul processing of dijíerent information layers utilizing a GIS, anal.ytic and sinthetic cartography were obtuined to express everyone of

LUIGI ANDRE BRIGNARDELLO; BASILIO GEORGUDIS MAYA

133

Solucion de Problemas y Procesos Cognoscitivos (Problem Solving and Cognitive Processes). Publication No. 41.  

ERIC Educational Resources Information Center

|The study of problem solving is made through the analysis of the process that leads to the final answer. The type of information obtained through the study of the process is compared with the information obtained by studying the final answer. The experimental technique used permits to identify the sequence of questions (tactics) that subjects ask…

Rimoldi, Horacio J. A.

134

ANSIEDAD Y DEPRESIÓN: EL PROBLEMA DE LA DIFERENCIACIÓN A TRAVÉS DE LOS SÍNTOMAS  

Microsoft Academic Search

SUMMARY The differentiation between the symptoms of anxiety and depres- sion is one of the most important problems in psychology as the dilemma profoundly affects the diagnosis and clinical intervention. According to the epidemiological data there is a strong comorbility between the two types of disorder. Nevertheless, it is not known which one of them precedes or predisposes to the

Diana Agudelo; Gualberto Buela-Casal; Charles Donald Spielberger

135

Problemas y dilemas éticos en la investigación de la explotación sexual comercial de niñas y niños  

Microsoft Academic Search

SUMMARY The article begins by defining commercial sexual explotation of children (CSEC) as an exercise of power that commercializes the sexual abuse of children and adolescents so that the exploiters, nearly always adult men, will obtain financial profit or some type of social, psychological or other satisfaction. Victims of CSEC are girls and, to a lesser extent, boys. In any

Rafael Gutiérrez; Leticia Vega; Eva Maria Rodríguez

2008-01-01

136

Problema dos tres corpos em mecanica quantica. (Three-body problem in quantum mechanics).  

National Technical Information Service (NTIS)

Different methods used in the analysis of the scattering of an elementary particle by a system of two bound particles are compared. All particles are considered spinless and distinguishable from each other. Two approaches are used in the treatment of the ...

A. C. B. Antunes

1973-01-01

137

Modelización de problemas de ordenación forestal con múltiples criterios. Una aplicación a la economía forestal cubana  

Microsoft Academic Search

Los bosques cubanos han sido objeto de un explotación indiscriminada durante muchos años, lo que ha provocado que se estén realizando grandes esfuerzos por el restablecimiento de los mismos y que se tienda a posiciones conservacionistas que provocan el envejecimiento de las masas. Como consecuencia de esta situación, tales bosques presentan una composición por edades desequilibrada. Así, en este trabajo

R. CABALLERO; T. GÓMEZ; J. MOLINA

2003-01-01

138

El Ruido: Un Problema para la Salud (Noise: A Health Problem).  

ERIC Educational Resources Information Center

This booklet contains nine sections describing ways in which noise may endanger health and well-being. Sections are included on: (1) hearing loss; (2) heart disease; (3) other reactions by the body; (4) effects on the unborn; (5) special effects on children; (6) intrusion at home and work; (7) mental and social well-being; and (8) danger to life…

Environmental Protection Agency, Washington, DC. Office of Noise Abatement and Control.

139

La violencia y sus repercusiones en la salud: reflexiones teóricas y magnitud del problema en México  

Microsoft Academic Search

Our understanding of violence gains from perspectives con- tributed by several different disciplines. The differences among goals and points of view are often reflected in their vocabularies and interfere in to integrate the advances by each of them.Three big disciplines have been studies vio- lence, those are: Social Sciences, Criminal Justice and most rescentlly Public Health this paper present discuss

MARTHA HÍJAR-MEDINA; MARÍA VICTORIA LÓPEZ-LÓPEZ; JULIA BLANCO-MUÑOZ

1997-01-01

140

Violencia sexual y problemas asociados en una muestra de usuarias de un centro de salud  

Microsoft Academic Search

Objective. To estimate the frequency of different forms of sexual violence and its association with mental health problems, such as depressive symptoms, suicidal ideation and attempt, and alcohol and drug use. Material and meth- ods. From February to March 1998, a cross-sectional study was conducted among 345 women attending a healthcare center in Mexico City. All women were living with

Luciana Ramos-Lira; María Teresa Saltijeral-Méndez; Martha Romero-Mendoza; Miguel Angel Caballero-Gutiérrez; Nora Angélica Martínez-Vélez

2001-01-01

141

Comunicação e participação pais-filhos: correlação com habilidades sociais e problemas de comportamento dos filhos  

Microsoft Academic Search

The objectives of this study were to compare indicators of the involvement between parents with their children and to compare parental involvement with the children's repertoire of social skills as well as to behavior problems. 110 children from the 4th grade of Elementary School participated, using the Quality of Family Interaction from the children's viewpoint questionnaire (QIFVF), to assess the

Fabiana Cia; Renata Christian de Oliveira Pamplin; Zilda Aparecida Pereira Del Prette

2006-01-01

142

2-MASS sources with 12um excesses  

NASA Astrophysics Data System (ADS)

We will observe 14 main-sequence stars with 12 micron excesses, indicating the presence of warm (temperature of order 300 K) circumstellar dust debris disks. We discovered these systems using 2MASS J, H, Ks photometry, to estimate photospheric SEDs, and IRAS FSC or SSC 12 micron photometry. The dust is located at about 1--10 AU from the stars, in possible asteroidal clouds. We will obtain IRAC 3.6, 4.5, 5.8, and 8 micron very precise photometry (S/N > 100) to search for the hottest dust, and therefore the innermost edge, of the disks. Through IRS 5.3--21.8 micron spectroscopy (S/N > 20) we will search for PAH 6.2, 7.7, 8.6, and 11.3 micron features, and 10 and 20 micron silicate emission features. We will also search for colder dust, more distant from the stars, in Kuiper Belt-like regions, through MIPS 24 micron photometry (S/N > 20).

Werner, Michael; Fajardo-Acosta, Sergio

2004-09-01

143

350um polarimetry from CSO (Dotson+, 2010)  

NASA Astrophysics Data System (ADS)

The instrument, calibrations, and data analysis techniques have been described in detail by Schleuning et al. (1997PASP..109..307S), Dowell et al. (1998ApJ...504..588D), and Kirby et al. (2005PASP..117..991K). Table 1 lists the coordinates, observing dates, peak intensities and size and range of directions of the chop used for each object. (3 data files).

Dotson, J. L.; Vaillancourt, J. E.; Kirby, L.; Dowell, C. D.; Hildebrand, R. H.; Davidson, J. A.

2010-04-01

144

Amamentação: um híbrido natureza-cultura  

Microsoft Academic Search

Objective: To contribute to the creation of a new theoretical synthesis about the relationship between the biological and social dimensions of breastfeeding, categorizing it as a nature-nurture hybrid. Sources of data: The methodological approach of the present article was based on the qualitative health research frame, and data were analyzed on the basis of dialectic-hermeneutic principles. Primary sources, comprising historical

João Aprigio Guerra de Almeida; Franz Reis Novak

2004-01-01

145

Direito à saúde: um convite à reflexão  

Microsoft Academic Search

This study focuses on changes and breaks in contemporary society relating to the right to healthcare as a universal value, in conformity with the guidelines provided by multilateral agencies and disseminated particularly since the 1990s. From the genesis of social rights and by tracing the interdependence between social and economic aspects of social citizenship in democratic capitalist countries, the study

Vera Maria Ribeiro Nogueira; Denise Elvira Pires de Pires

2004-01-01

146

MAPEAMENTO DE ÁREAS DEGRADADAS E COM RISCO À DESERTIFICAÇÃO NO SUDOESTE BAIANO  

Microsoft Academic Search

RESUMO A desertificação é um problema socioambiental que afeta diversas regiões brasileiras, provocando a degradação das terras em regiões árida, semi-árida e sub-úmida seca. Este é um processo relacionado à super-exploração dos recursos naturais de forma não sustentável, onde o manejo e práticas agropecuárias exercem intensa pressão sobre o ambiente. Neste trabalho foi proposto mapear este processo no sudoeste da

Israel de Oliveira Junior; Raquel de Matos; Cardoso do Vale; Jocimara Souza; Britto Lobão; Anna da Franca Rocha

147

Abordagem etnobotânica de plantas medicinais utilizadas em dermatologia na cidade de João Pessoa-Paraíba, Brasil  

Microsoft Academic Search

RESUMO: As doenças de pele são muito comuns acometendo cerca de 1\\/3 da população mundial e as plantas medicinais, em especial as suas associações, são comumente usadas nas comunidades para o tratamento de micoses, erisipela e outras dermatoses. Todavia, um dos problemas enfrentados pelos profissionais da área de saúde atualmente é justamente a questão do uso concomitante de plantas medicinais

E. O. Lima; R. A. G. Oliveira; M. S. Toledo; João Pessoa

148

Habilidades cognitivas de crianças e adolescentes com distúrbio de aprendizagem 1  

Microsoft Academic Search

Resumo Distúrbio de aprendizagem é um problema escolar e social, sendo uma das principais causas de encaminhamento de crianças para avaliação psicológica. Esta pesquisa teve por objetivo investigar habilidades cognitivas de crianças e adolescentes com distúrbio de aprendizagem. Neste estudo foram avaliadas 263 crianças de escolas públicas com o teste de inteligência WISC-III. A amostra constituiu-se de alunos entre 6

Vera L. M. de Figueiredo

149

Dengue: alertas clínicos e laboratoriais da evolução grave da doença* Dengue: clinical and laboratory alerts of the evolution of the serious illness  

Microsoft Academic Search

JUSTIFICATIVA E OBJETIVOS: A dengue é um impor- tante problema de saúde pública, sendo necessário qualifi- car a assistência no seu atendimento, objetivando reverter quadros potencialmente graves, com redução do risco de morte. O objetivo deste estudo foi buscar correlação entre sinais e sintomas clínico-laboratoriais que indiquem a sua gravidade, aumentando assim a sensibilidade da triagem da equipe de saúde

Wendell Paiva; Marina Baptista de Azevedo; Marcelle Fernandes de Souza; Recebido da Secretaria

150

EXERCÍCIOS PERINEAIS, ELETROESTIMULAÇÃO E CORREÇÃO POSTURAL NA INCONTINÊNCIA URINÁRIA ESTUDO DE CASOS  

Microsoft Academic Search

Resumo: A incontinência urinária (I.U.) é um problema que afeta mulheres de todas as idades. Este trabalho objetivou verificar a eficácia dos exercícios perineais e da eletroestimulação perineal, associados à correção postural, como modalidades fisioterapêuticas de intervenção em três pacientes do sexo feminino, com queixa de I.U. A intervenção constou de avaliações fisioterapêuticas, iniciais e finais, consistindo de dados clínicos,

Natália Camargo Rodrigues; Daniela Scherma; Raquel Agnelli Mesquita; Jussara de Oliveira

2005-01-01

151

Mecânica celeste.  

NASA Astrophysics Data System (ADS)

Contents: Os princípios da mec@OSC@@CCF@anica celeste. O problema de 2-corpos. O sistema de equações canônicas. A teoria das perturbações. O movimento de um satélite artifical. A teoria lunar e o movimento de outros satélites naturais. A teoria planetária. Procedimentos numéricos.

de Luca, N.; Ferraz-Mello, S.

152

Hipertensão arterial sistêmica no Brasil: o que avançamos no conhecimento de sua epidemiologia? Systemic hypertension in Brazil: how much have we improved our knowledge about its epidemiology?  

Microsoft Academic Search

RESUMO A hipertensão arterial sistêmica (HAS), um dos prin- cipais determinantes da morbidade e mortalidade cardiovasculares, tem sido objeto de estudo em todo o mundo, seja por seus aspectos clínicos, fisiopatológicos ou como problema de saúde na coletividade. No Brasil, os primeiros estudos sobre prevalência surgiram na década de 1970, com produções crescentes na litera- tura e em congressos desde

Marta de Medeiros Neder; Arthur Augusto; Nogueira Borges

153

Towards a Solution of the Problem of Cercospora Beticola on Sugar Beet (Prilog Resavanju Problema Cercospora Beticola NA Secernoj Repi).  

National Technical Information Service (NTIS)

Results are given of field investigations to establish the efficacy of some chemical preparations in the control of Cercospora beticola, the optimal date for application, and which of the two above mentioned principles of chemical control better suits Yug...

A. Maric

1970-01-01

154

Decision e Informacion en Solucion de Problemas. Publicacion No. 77 (Information and Decision Making in Problem Solving. Publication No. 77).  

ERIC Educational Resources Information Center

A technique using information and decision-making theories to evaluate problem solving tactics is presented. In problem solving, the process of solution is evaluated by investigating the questions that the subject doing the problem solving asks. The sequence of questions asked is called a tactic. It is assumed that: (1) tactics are the observable…

Rimoldi, Horacio J. A.; And Others

155

Efectos del sexo, el nivel educativo y el nivel económico en el afrontamiento de los problemas en personas muy mayores  

Microsoft Academic Search

Introduction and objectivesthe ageing process is known to differ depending on certain structural variables such as age, gender, educational level and income. Accordingly, it is important to know whether there are personal and contextual factors that influence the use of strategies for coping with problems in very old age. The present study analyses the role of gender, educational level and

A. B. Navarro; B. Bueno

2005-01-01

156

Contaminación por nitrógeno inorgánico en los ecosistemas acuáticos: problemas medioambientales, criterios de calidad del agua, e implicaciones del cambio climático  

Microsoft Academic Search

climate change. The major environmental problems related to inorganic nitrogen pollution in aquatic ecosystems are: (1) acidification of lakes and rivers with low or reduced alkalinity; (2) eutrophication of fresh and marine waters (with the additional problem of toxic algae); and (3) direct toxicity of nitrogenous compounds to aquatic animals. Additionally, inorganic nitrogen pollution could induce adverse effects on human

J. A. Camargo; A. Alonso

157

La Biotecnología en los Cultivos: Problemas Potenciales para los Países en Desarrollo  

NSDL National Science Digital Library

Excerpts from an Oxfam report examine GM crops are an answer to world hunger for some. To others, these crops are a health risk and an environmental threat because some GM crops: have proven to be genetically unstable, do not do what they were designed to do, are a risk to human health, particularly children, cause animals who eat them to become immune to antibiotics, and spread and destroy natural crops.

Laura Spinney (Oxfam GB;)

1998-05-01

158

Decision e Informacion en Solucion de Problemas. Publicacion No. 77 (Information and Decision Making in Problem Solving. Publication No. 77).  

ERIC Educational Resources Information Center

|A technique using information and decision-making theories to evaluate problem solving tactics is presented. In problem solving, the process of solution is evaluated by investigating the questions that the subject doing the problem solving asks. The sequence of questions asked is called a tactic. It is assumed that: (1) tactics are the observable…

Rimoldi, Horacio J. A.; And Others

159

Masturbation as a mental hygiene problem––a study of the beliefs of seventy-five young men  

Microsoft Academic Search

This study revealed that 66, or 86.7%, of the young men had heard from one or more sources that masturbation has a seriously damaging effect upon those who practice it. All but 5 of the young men believed at the time they gave the information that the practice of masturbation has one or more types of harmful effects upon the

E. V. Pullias

1937-01-01

160

O perfil de clientes de um shopping center: um estudo exploratório com consumidores do interior  

Microsoft Academic Search

The study was carried out in a Minas Gerais' inland city, so as to get acquainted with the profile and habits of its clients. This research is innovative as it approaches as customer the citizen of an inland town. The objective of this work was to identify the groups of customers taking into consideration their level of satisfaction as well

Daniela Meireles de Andrade

161

Laser damage testing for ion beam sputtered optical coatings at 2 um and 3 um  

NASA Astrophysics Data System (ADS)

Precision Photonics Corporation (PPC) has developed high Laser Damage Threshold (LDT) coatings for the important 2-3?m spectral region. Accurate information for both LDT and absorption for such coatings is sparse and often unreliable, especially when compared to the huge amount of information for these parameters in the 1?m spectral region. The goal of this effort is to provide useful, accurate information for high power/energy coatings, given the limited LDT and absorption testing capabilities for the 2-3?m region. In this paper, we present data for 2?m pulsed LDT, 2?m absorption, 3?m pulsed LDT, and Continuous Wave (CW) LDT data.

Wood, Chris; Carpenter, Derrick; Lyngnes, Ove

2011-05-01

162

Nebulosas planetárias galácticas: idades e cinemática  

NASA Astrophysics Data System (ADS)

As nebulosas planetárias são formadas a partir de estrelas com massas entre 0.8 e 8 massas solares na sequência principal, formando um conjunto de objetos com idades e populações diferentes. Esse fato torna as nebulosas interessantes ao estudo da rotação galáctica, uma vez que as populações mais jovens devem estar claramente associadas ao disco fino da Galáxia, enquanto que as populações mais velhas estariam associadas ao disco espesso ou mesmo ao halo galáctico. Neste trabalho, utilizamos uma grande amostra de nebulosas com velocidades radiais conhecidas para determinar a curva de rotação da Galáxia. Para minimizar os erros decorrentes das incertezas nas distâncias, usamos quatro diferentes escalas estatísticas. Para a atribuição da idade dos objetos, utilizamos o método proposto recentemente por Maciel et al. (Astron. Astrophys. 397, 667, 2003), em um estudo da variação temporal dos gradientes de abundâncias. Com esse método, é possível obter uma classificação das nebulosas por grupos de idade, totalmente independente de outros sistemas de classificação, uma vez que as idades são estimadas individualmente, a partir das metalicidades das nebulosas. Nossos resultados são comparados com as previsões dos tipos de Peimbert, e mostram que os desvios médios das curvas obtidas são sensivelmente menores nos casos dos objetos mais jovens, associados ao disco fino, com relação aos objetos mais velhos do disco espesso, levando à determinação de uma curva de rotação semelhante à dos objetos de população I jovem. (CNPq)

Lago, L. G.; Maciel, W. J.

2003-08-01

163

Comparative research on medicine application with 0.53-um, 1.06-um, and 1.32-um Nd:YAG lasers  

NASA Astrophysics Data System (ADS)

Because of its high power and excellent optical features, laser has almost been applied to everywhere of medical research and clinic. Over the past several years, laser medical has achieved a rapid progress, and laser medical instruments has developed promptly, each new wavelength can be successfully applied in diagnostic and treatment of diseases. Among the medical lasers, Nd:YAG solid-state laser systems have proven useful in surgical use operate, such as neurosurgery, gastroenterology, cardioangiology, urology, gynecology, dermatology and ENT. As with other solid-state lasers, the Nd:YAG laser can be made to emit various wavelengths by means of suitable resonator configurations and some newest solid-state laser technology, pumped by the Krypton lamp, the Nd:YAG laser at room temperature exhibits transition at 1.06 micrometer Nd:YAG, using nonlinear crystal and Q-switch to double its frequency can attain 0.53 micrometer green beam. In our laser systems, the efficiency at 1.06 micrometer is more than 3 percent, an efficiency of 0.5 percent at 1.32 micrometer and 0.53 micrometer can be attained. For a power of 100w at 1.06 micrometer, 15w at 1.32 micrometer and 0.53 micrometer can therefore be produced. All of three kinds Nd:YAG laser hold these characteristics: high output power; optical fiber transition that can be cooperated with endoscope. The paper mainly discusses laser operating characteristics and clinic applications of three kinds wavelengths at 0.53 micrometer 1.06 micrometer and 1.32 micrometer Nd:YAG laser systems.

Li, Yahua; Li, Zhenjia; Zhu, Changhong; Huang, Yizhong

1996-09-01

164

UM TERRITÓRIO A SER DEFENDIDO: CORPOS, GÊNERO E DITADURAS  

Microsoft Academic Search

Resumo: Pensar as ditaduras militares nos países do hoje denominado Cone Sul nos remete a relatos sobre manifestações, sequestros, prisões, torturas e mortes. Ao observar a atuação de mulheres e as relações de gênero que perpassam essas décadas, podemos ver seus corpos como campos simbólicos dentro da resistência, armada ou não; ambiguamente, eles representam também territórios a se defender. Partindo

Ana Maria Veiga

165

Um Olhar sobre "Beleza Americana" (A Look at "American Beauty").  

ERIC Educational Resources Information Center

|Discusses the film "American Beauty" in light of a reading of Karl Marx. Finds that the film shows the circularity which marks bourgeois society, even though the rhythm of industry and renovation of the society masks it. States that Marx praises the industry, invention, and innovation of the bourgeoisie. (BT)|

Bissoto, Maria Luisa

2000-01-01

166

Do enredo de um nome: Märchen, Maere, Maerlîn  

Microsoft Academic Search

Resumo: Entre aqueles que se dedicam a examinar a literatura fantástica e seus gêneros vizinhos, o nome de Todorov desponta, seja para refutar, seja para acatar as teses apresentadas no Introduction à la litterature fantastique. Com efeito, é preciso reconhecer o mérito da obra que soube ressaltar as leis gerais que orientam o texto literário fantástico, traçando os limites que

Sylvia Maria Trusen

167

Ocorrências éticas com profissionais de enfermagem: um estudo quantitativo  

Microsoft Academic Search

This study aimed at identifying cha- racteristics of ethical occurrences related to nursing care in a large private hospital in the city of São Paulo. There were 190 occurrences r eported t o the hospital's Nursing Ethical Committee (NEC) between 1995 and 2004. Most occurrences caused no damages to the patient, the health institution, the nursing staff or the professional

Genival Fernandes de Freitas; Taka Oguisso

2008-01-01

168

DIAGNÓSTICO ESTRATÉGICO EM UM ATELIER FAMILIAR DE MÉDIO PORTE  

Microsoft Academic Search

This article refers to a diagnostic strategy perfo rmed in the company's family Maximu Atelier in the application of the 5 forces o f Porter and perspectives within the organization, from data collected from their manage rs. It was through this diagnosis, there are factors to be considered in the strategic planning process of micro and small enterprises - MEPs,

Cláudio Antonio Rojo

169

Dança-educação: um projeto de pesquisa e extensão  

Microsoft Academic Search

Starting from the need to deepen the study about the dancing in scholar Physic Education, we developed a research and extension project, titled dancing- education. The aim was to enable the body exploration, the knowledge of the dancing manifestation diversity, so well as the argument and the though about dancing. The methodology was lined in research-action and we developed 16

Telma Cristiane Gaspari

170

Characteristics of Photonis 6-um pore microchannel plates  

NASA Astrophysics Data System (ADS)

We report on the performance of 6 micrometer pore diameter Microchannel Plates (MCPs) fabricated in 50 X 50 mm2 format, from both standard and radio-isotope free low noise glass, by Photonis SAS for a European Space Agency Technology Research Program. We compare them to MCPs manufactured by Photonis (the former Philips Photonics) for the High Resolution Camera (HRC) on NASA's Chandra X-ray observatory. The new MCPs represent a significant advance in MCP technology, having a much larger area than previously reported 6 micrometer plates, and demonstrating low noise 6 micrometer technology for the first time. The 6 micrometer plates are shown to be, mechanically, exceptionally well made with a defect density reduced by a factor of 2 - 5 compared to samples from the HRC flight blocks. They exhibit excellent gain and the expected 0.28 keV (Carbon K) X-ray quantum efficiency. The low noise plates have a very uniform response to X-rays but the standard glass MCPs do show inhomogeneity on both the global and multifiber scales.

Pearson, James F.; Brunton, Adam N.; Martin, Adrian P.; Fraser, George W.; Lees, John E.; Boutot, J.-P.; Fairbend, R.; Flyckt, Sven O.

2000-12-01

171

The First Low uM SecA Inhibitors  

PubMed Central

SecA ATPase is a critical member of the Sec family, which is important in the translocation of membrane and secreted polypeptides/proteins in bacteria. Small molecule inhibitors can be very useful research tools as well as leads for future antimicrobial agent development. Based on previous virtual screening work, we optimized the structures of two hit compounds and obtained SecA ATPase inhibitors with IC50 in the single digit micromolar range. These represent the first low micromolar synthetic inhibitors of bacterial SecA and will be very useful for mechanistic studies.

Chen, Weixuan; Huang, Ying-ju; Gundala, Sushma Reddy; Yang, Hsiuchin; Li, Minyong; Tai, Phang C.; Wang, Binghe

2010-01-01

172

Desenvolvimento de circuitos reconfiguráveis que interagem com um monitor VGA  

Microsoft Academic Search

Resumo - Este artigo descreve a implementação de circuitos reconfiguráveis que suportam interacção com monitores VGA. A visualização dos resultados e dos dados intermédios num monitor VGA facilita a depuração de circuitos realizados em FPGA e aumenta as potencialidades de interacção com o utilizador. O projecto desenvolvido foi utilizado no âmbito das disciplinas Computação Reconfigurável (4º ano de LECT) e

Iouliia Skliarova

2005-01-01

173

Process characterization of 100-um-thick photoresist films  

NASA Astrophysics Data System (ADS)

The number of lithographic applications that require the use of photoresist thickness of one hundred microns or more is rapidly increasing. Extremely large structure heights and high aspect ratios are often required for micro- electrodeposition of mechanical components such as coils, cantilevers and valves. These ultra-thick photoresist can also be used as a mold in micro-electromechanical systems. Ultra-thick photoresist are also used in bump bond applications to define the size and location of the bonds for advanced flipchip packaging.

Flack, Warren W.; White, Sylvia; Todd, Bradley

1999-05-01

174

Photoresist technology for 0.25-um lithography  

NASA Astrophysics Data System (ADS)

It has been the general opinion of device manufacturers that deep ultraviolet (DUV) imaging will be the imaging method required to produce 250nm and sub-250nm geometries for 256Mb-DRAMs and related logic technology. Traditional I-line lithography may not be capable of manufacturing at these geometry's and the use of DUV radiation with 'chemically amplified' photoresists will be required for these device programs. Issues regarding the problems that researchers are combining or have not yet considered in the evolutionary chain of DUV photoresist development and implementation will be discussed. As researchers continue developing environmentally stable materials, there is a series of issues that device manufacturers need to resolve today as new quarter micron fabs are currently under construction. Fab designers may need to consider additional space for specialty tools or processes in order to produce quarter micron lithography. The issues concerning materials, process, reflectivity control, manufacturing facilities, quality control, photoresist manufacturing, photoresist cost and a proposed roadmap for the next several years of development will be discussed. The author will also provide a brief overview of current I-line photoresists and their capability to the 300nm geometry region along with some basic chemistry regarding the principles of DNQ's and chemically amplified photoresists.

Conley, Willard E.

1996-07-01

175

Mídia, violência e alteridade: um estudo de caso  

Microsoft Academic Search

Media, violence and otherness: a case study. The objective of this paper is to discuss some representations that circulated on press media about the bus kidnapping case that occurred in the city of Rio de Janeiro, in June 2000. The kidnapping was aired live on TV with a big mass media coverage, and it had a tragic end. Our analysis

Fabiana Pinheiro Ramos; Helerina Aparecida Novo

2003-01-01

176

Toward 1-TW train of 10-um picosecond laser pulses  

NASA Astrophysics Data System (ADS)

The results of principal upgrade of high-pressure, X-ray preionized TE-CO2 laser towards obtaining 10 atm volume self-sustained discharge in CO2:N2:He mixtures with reasonably high (up to 25%) percentage of molecular gases are reported. The estimated energy of radiation from such a laser is greater than or equal to 15 J. It corresponds to peak power of regeneratively amplified 2 ps 10 micrometer pulse formed in master oscillator of laser system greater than or equal to 1.5 TW.

Apollonov, Victor V.; Kazakov, K. K.; Pletnyev, N. V.; Sorochenko, Vladimir R.

2000-04-01

177

Laser pattern-generation technology below 0.25 um  

Microsoft Academic Search

The projected rapid reduction in mask minimum feature size from the 250 nm to the 100 nm wafer generation will drive laser pattern generators to deep UV wavelengths. Commercially available sources exist in the 250 nm wavelength region using nonlinear optical materials to frequency double longer wavelength laser lines. Nonlinear optical materials, such as SBBO and KBBF, exist for wavelengths

Paul C. Allen

1998-01-01

178

Laser pattern-generation technology below 0.25 um  

NASA Astrophysics Data System (ADS)

The projected rapid reduction in mask minimum feature size from the 250 nm to the 100 nm wafer generation will drive laser pattern generators to deep UV wavelengths. Commercially available sources exist in the 250 nm wavelength region using nonlinear optical materials to frequency double longer wavelength laser lines. Nonlinear optical materials, such as SBBO and KBBF, exist for wavelengths below 200 nm but they have not been commercialized. Second harmonic generation in intracavity or mode-locked, external resonant-ring laser configurations can be used to produce sub-200 nm radiation. Existing system architectures are shown to be easily modified to use pulsed sources with a high repetition rate. Advances in nonlinear optical materials, laser design, and system architecture will ensure that laser pattern generation will be an effective maskmaking technology for the next decade.

Allen, Paul C.

1998-06-01

179

Um Estudo Exploratório sobre Inteligência Competitiva no Brasil AUTOR  

Microsoft Academic Search

This is an exploratory study and its main objective was to analyse the daily work from Competitive Intelligence Professionals, as analysts and managers in Brasil. It was developed under a sample based on 79 companies among 500 companies from Maiores and Melhores Guide 2007, with a structured questionnaire and interviews. The main results indicated that companies follow the competitors every

ALFREDO PASSOS DA SILVA

180

UM-StL 1D Acceleration Solver  

NSDL National Science Digital Library

Produced by the University of Missouri - St. Louis, this website is an educational "resource for solving low and high speed constant acceleration problems." Physics students can find quantitative tools to handle time dilation, relativist acceleration, and curved space-time. Containing networks of numerous concepts dealing with physics, chemistry, and math, the site helps students understand how various concepts fit together. Within this large site, students can find information about SpaceTime theory, Map-based relativity, Lorentz Transforms, and much more.

181

Process characterization of 100-um-thick photoresist films  

Microsoft Academic Search

The number of lithographic applications that require the use of photoresist thickness of one hundred microns or more is rapidly increasing. Extremely large structure heights and high aspect ratios are often required for micro- electrodeposition of mechanical components such as coils, cantilevers and valves. These ultra-thick photoresist can also be used as a mold in micro-electromechanical systems. Ultra-thick photoresist are

Warren W. Flack; Sylvia White; Bradley Todd

1999-01-01

182

Der Ausbruch des Thera-Vulkans um 1500 v. Chr  

Microsoft Academic Search

The stylistic development of the painted pottery from the excavations of Akrotiri on Thera evidences that the great Late-Minoan eruption of the Thera volcano must be dated around 1500 B.C. The eruption had only minor effects on Crete which were not nearly so serious as has been supposed. The rate of ash fall and the height of the tsunamis did

H. Pichler; W. Schiering

1978-01-01

183

2.7-um diode-pumped fiber laser  

NASA Astrophysics Data System (ADS)

The performances of the diode-pumped 2.7 micrometers fiber laser have been studied. From the population inversion estimated for a fluorozircoaluminate (AZF) glass with different ErF3 doping, a higher gain was expected for a higher ErF3 doping. The laser performances were improved by adjusting fiber length. Maximum output power of 18.5 mW and slope efficiency of 7% were obtained by using 10 mol% ErF3 doped, 25 mm long AZF fiber in the 800 nm pumping. A cw lasing was achieved by diode pumping at 0.98 micrometers and the effect of Yb3+ sensitization was discussed to improve the performance.

Yanagita, Hiroaki; Toratani, Hisayoshi; Yamashita, Toshiharu T.; Masuda, Isao

1992-02-01

184

O ANTIGO EGITO EM ESPAÇOS PRIVADOS: UM ESTUDO DE EGIPTOMANIA  

Microsoft Academic Search

The manifestations of the Egyptomania are easily recognized in public environments because symbols and architectural elements can be seen in squares, fronts and cemeteries of different cities. There are difficulties in the studies of the Egyptomania in private spaces, specially the interns, due to the main localization of them. However, when these spaces are found, they can disclose and surprise

Liliane Cristina Coelho

185

Regulações Institucionais e Integração Cultural: um Binômio Viável  

Microsoft Academic Search

This article proposes to explore and emphasize some aspects of the authors doctorate thesis. It presents some forms, and organizational principles of the Alcoholics Anonymous or (AA) in Brazil and Uruguai, as well as analyses relationship between the groups institutional regulations and the institutions potential for cultural integration. Thus, this institution can be concieved to be, for the aim of

Eliane Ganev

2002-01-01

186

Um Ambiente para Transmissão de Vídeos Instrucionais sob Demanda  

Microsoft Academic Search

This paper presents an environment for transmition of instructional videos to support students learning at UNIVALI undergraduate couses. It emphatises the vídeo on demand server development wich allows media streams to be delivered. The server was developed with Java Media Framework API and is prepared to respond to many cliente simultaneously. The media files are retrived from the media server,

Rafael Canan; André Luís; Alice Raabe

187

Habilidades sociais em mulheres obesas: um estudo exploratório1  

Microsoft Academic Search

Among the psychological aspects concerning obesity, the quality of the interpersonal relationships can be pointed out. The assumption is that the overweighted people, given their restrictions, may have deficits in social skills. This research aimed to verify, in a sample of 29 morbid obese women, their main deficits in general social skills and in those ones related to feeding; the

Sabrina Kerr; Bullamah Correia; Zilda Aparecida; Pereira Del Prette; Almir Del Prette

188

Habilidades sociais conjugais e filiação religiosa: um estudo descritivo  

Microsoft Academic Search

The development and maintenance of social skills are influenced by many factors, including faiths and norms. Since, as a rule, religious faith regulates social behavior which includes relationships between spouses, the influence of religious affiliation on social skills is evaluated. Seventy-four couples (Catholic, Presbyterians and no religious affiliation) completed the Marital Social Skills Inventory (MSSI) and a personal data form.

Miriam Bratfisch Villa; Zilda Aparecida Pereira Del Prette; Almir Del Prette

2007-01-01

189

Optical gain and loss in 3-um diode W lasers  

NASA Astrophysics Data System (ADS)

Gain in broad area mid-infrared diode W lasers ((lambda) =3- 3.1micrometers ) has been measured using lateral mode spatial filtering combined with the Hakki-Paoli approach. The internal optical loss of approximately equals 19cm-1 determined from the gain spectra was the same for devices with either 10- or 5-period active regions and nearly constant in the temperature range between 80 and 160K. Analysis of the differential gain and spontaneous emission spectra shows that the main contribution to the temperature dependence of the threshold current is Auger recombination, which dominates within almost the entire temperature range studied (80-160K).

Suchalkin, Sergei; Westerfeld, David; Donetski, Dimitrii; Martinelli, Ramon U.; Vurgaftman, Igor; Meyer, Jerry R.; Luryi, Serge; Belenky, Gregory L.

2002-05-01

190

Manufacturing optimization strategies for 0.35-um design rules  

Microsoft Academic Search

Not Available Bibtex entry for this abstract Preferred format for this abstract (see Preferences) Find Similar Abstracts: Use: Authors Title Return: Query Results Return items starting with number Query Form Database: Astronomy Physics arXiv e-prints

Jacek K. Tyminski; Sean J. McNamara; Toshihiro Sasaya; Masaya Komatsu; Dean C. Humphrey; Arthur Winslow

1997-01-01

191

Histórias infantis: um recurso para a compreensão dos estados mentais  

Microsoft Academic Search

Children's storybooks: a resource to the understanding of mental states. This study examined a sample of 100 national children's storybooks directed to pre-school children aged four to six years to identify words\\/ utterances that denote mental states according to three views of analysis: via words and expressions in the text; via the pictures; and via presence of irony or false

Marisa Cosenza Rodrigues; Jacqueline Silva Rubac

2008-01-01

192

Transferências orbitais dentro do modelo quase bicircular no sistema Terra-Lua-Sol  

NASA Astrophysics Data System (ADS)

O problema quase bicircular planar consiste na determinação da dinâmica de um corpo, de massa desprezível, que se move sob o campo gravitacional de três corpos. No caso estudado, o quarto corpo é considerado um satélite artificial e os demais são a Terra, a Lua e o Sol, formando o sistema de três corpos. Este modelo permite a construção de uma hamiltoniana similar a do problema restrito de três corpos (PRTC), incluindo termos periódicos não autônomos, provenientes da presença do Sol, portanto pode ser entendido como uma perturbação ao PRTC. Suas órbitas periódicas aparecem isoladas e possuem o mesmo período solar. Os pontos de equilíbrio colineares possuem o mesmo caráter de estabilidade linear dos pontos lagrangianos (L1, L2 e L3) do PRTC, sendo do tipo sela x centro x centro, instável na direção x e estáveis nas direções y e z. As órbitas periódicas tridimensionais ao redor do ponto colinear é chamada órbita Halo. O objetivo deste trabalho é determinar órbitas de transferências de baixo consumo de combustível para um veículo espacial partindo de uma órbita de estacionamento ao redor da Terra em direção a uma órbita Halo do ponto L1, situado entre a Terra e Lua. Esta tarefa pode ser transformada no problema de valor de contorno: dado um ponto inicial na órbita de estacionamento, um ponto final na órbita halo e o tempo de transferência, deseja-se obter a trajetória que liga estes dois pontos e que minimize os incrementos de velocidade do veículo. Essas transferências são realizadas baseadas no método de Lambert e analisadas de modo a fornecer um baixo consumo. Posteriormente, é feita uma comparação de consumo com as órbitas de transferência equivalentes do PRTC.

Corrêa, A. A.; de Almeida Prado, A. F. B.; Stuchi, T. J.; Beaugé, C.

2003-08-01

193

Cyclops Worko w Server: Uma Proposta para um modelo de um servidor de uxo de atividades mØdico-hospitalar  

Microsoft Academic Search

Our initial motivation to study concerning this domain application was consolidated through difculty lived for health care institutes. The main hospital difculties are in treatment of informations and work ow management. The implementation of process management systems requires the use of sustai- nable technologies. In processes management scene in workow management information system, the workow engine is a very important

Aldo von Wangenheim; Rafael Andrade

194

O perfil de clientes de um shopping center: um estudo exploratório com consumidores do interior  

Microsoft Academic Search

The study was carried out in a Minas Gerais' inland city, so as to get acquainted with the profile and habits of its clients. This research is innovative as it approaches as customer the citizen of an inland town. The objective of this work was to identify the groups of customers taking into consideration their level of satisfaction as well

Daniela Meirelles Andrade; Josmaria Lima Ribeiro de Oliveira; Luiz Marcelo Antonialli

2004-01-01

195

UM PROCEDIMENTO PARA SELEÇÃO DE ESTRATÉGIAS DE PRODUÇÃO E INJEÇÃO DE UM CAMPO EM DESENVOLVIMENTO, LEVANDO EM CONSIDERAÇÃO INCERTEZAS GEOLÓGICAS  

Microsoft Academic Search

The optimization of the hydrocarbon's explotation in a field development project may be very complex, due to the uncertainties on the reservoir characterization. Different strategies may present great variations on fluid production (oil, water and gas) and on the costs and profits related to the explotation. A procedure to select strategies must consider the possibilities, compare them and choose the

Cristina C. Mezzomo; Álvaro F. Martini; Denis J. Schiozer

196

ASPECTOS CIENTÍFICOS Y HUMANOS EN TORNO AL PROBLEMA DE LA ENFERMEDAD DE ALZHEIMER: CONOCIMIENTOS, CARENCIAS Y LÍMITES DE LA SABIDURÍA HUMANA  

Microsoft Academic Search

The understanding of dementia becomes more complex all the time. The study of dementia requires multiple sciences with a growing number of questions, although, this has improved the patient care. As a result of this, Alzheimer's disease is not just a scientifi c reality, but also a cultural, social and political matter. While society hopes for an effective treatment for

XABIER IBARZABAL

197

Eixo temático: Problemas Socioambientais Urbanos e Rurais O CRESCIMENTO URBANO E OS PROCESSOS DE MUDANÇAS NA PAISAGEM DA CIDADE DE BOA VISTA \\/ RR  

Microsoft Academic Search

The capital of the State of Roraima, Boa Vista is a central and plane city, with modern urban plan, characterized by wide avenues that converge for the Center, in a planned urban fan. In the thirties, it was planned by the architect Alexandre Dernusson, reminding \\

Neves Magalhães

198

La modelización matemática y el problema de la articulación de la matemática escolar. Una propuesta desde la teoría antropológica de lo didáctico 1  

Microsoft Academic Search

R Reessuummeenn:: En la primera parte del artículo introducimos algunas nociones funda- mentales de la Teoría Antropológica de lo Didáctico, que nos suministrarán las he- rramientas de análisis didáctico necesarias para reconstruir una posible evolución del dominio de investigación \\

Marianna Bosch; Francisco Javier García; Josep Gascón; Luisa Ruiz Higueras

2006-01-01

199

Utilizzo di campioni di meccanica della frattura per prove di tensocorrosione: Problema delle cricche ramificate. (Fracture mechanics specimens in stress corrosion testing: Branched cracks problem).  

National Technical Information Service (NTIS)

Stress corrosion tests frequently make use of pre-cracked Fracture Mechanics specimens (DCB type), wedge-loaded to a fixed displacement and held in the aggressive environment. Crack growth rate can be measured as a function of the applied K; while the cra...

G. Gabetta M. Radaelli A. Martinelli S. Ragazzoni

1990-01-01

200

Hacia Una Pedagogia de Solucion de Problemas en La Educacion Ambiental. Serie Educacion Ambiental 15 (Pedagogy of Solutions and Problems in Environmental Education. Environmental Education Series 15.  

ERIC Educational Resources Information Center

|This document discusses the teaching of problem solving in environmental education. From an interdisciplinary viewpoint, this study describes some strategies for teaching that can favor the practice of educational activities oriented toward solving the concrete problems of the surrounding environment. The volume is divided into seven chapters.…

United Nations Educational, Scientific, and Cultural Organization, Santiago (Chile). Regional Office for Education in Latin America and the Caribbean.

201

Disturbi da esposizione ad alcol in graavidanza: il problema chen non c'era (Disorders due to Prenatal Alcohol Exposure: The Problem that did not Exist).  

National Technical Information Service (NTIS)

Significant lifestyle changes in alcohol use are involving especially women with decreasing age of first use of alcohol and increasing abuse problems. So, warning is arising about female health and children health since prenatal alcohol exposure may gener...

G. Laviola R. Mancinelli

2008-01-01

202

Algoritmo Pseudopolinomial Para o Problema DA Mochila O-1 de Valor Independente (Pseudo-Polynomial Algorithm for the Value Independent O-1 Knapsack Problem).  

National Technical Information Service (NTIS)

Enumerative pseudopolynomial algorithm for solving the value independent O-1 knapsack problem is presented. This algorithm is an adaptation of Yanasse and Soma's algorithm for solving the O-1 linear diophantine equation. This adaptation maintains the same...

H. H. Yanasse N. Y. Soma

1987-01-01

203

40 AÑOS DE APORTES DESDE LA INVESTIGACIÓN Y LA INTERVENCIÓN DIDÁCTICA PARA CARACTERIZAR EL PROBLEMA CON LA LECTURA EN LA EDUCACIÓN FORMAL  

Microsoft Academic Search

A modo de explicar el fenómeno, algunos estudiosos sostienen el aserto según el cual nos adentramos en una era o civilización icónica que irá sustituyendo a la alfabética por la acción e influencia crecientes de las industrias mediáticas audiovisuales, de ello se colige el analfabetismo funcional tan generalizado cuyas manifestaciones más elocuentes son las dificultades para las expresiones oral, escrita

Gilberto Fregoso Peralta

2009-01-01

204

DescripciÛn de patrones de apego en menores institucionalizados con problemas conductuales1 Description of Attachment Patterns of Institutionalized Minors with Behavior Problems  

Microsoft Academic Search

The present investigation asesses attachment patterns in institutionalized children with conduct problems. In contrast, to previous designs which followed the Ainsworth Strange Situation or the AAI procedures, this investigation uses DSM ñ IV criteria and the Randolph Attachment Disorder Questionaire . After obtaining significant RADQ validity and confiability scores, it was found that 37,9% of the children with behaviour problems

Lorena MØndez Tapia; Luis GonzÆlez Bravo

205

Automatic Speaker Recognition: Considerations on an Adequate Methodology to Solve the Problem Riconoscimento Automatico Del Parlatore: Considerazioni Su Una Metodologica Atta Alla Soluzione Del Problema.  

National Technical Information Service (NTIS)

Some statistical considerations on the voice recognition problem was studied. No single parameter is sufficient, but results show a correlation function involving several parameters could be developed. Unfortunately there is not yet sufficient data on pop...

G. Ibba A. Paoloni

1978-01-01

206

LA EQUIVALENCIA Y SUPRESIÓN EN LA RESOLUCIÓN DEL PROBLEMA INVERSO EN GEOELÉCTRICA: APLICACIÓN EN SANTA LUCíA COTzUMALGUAPA, GUATEMALA  

Microsoft Academic Search

In order to obtain a correct interpretation of a vertical electrical sounding (VeS), the suppression and equivalence principles must be considered, for generating multiple models as a consequence of the non unicity of the solution of the inverse problem. Among all the valid solutions, one must be found that agrees the most with the VeS nearby, that has a good

Ana Beatriz

207

Avances en el diagnóstico del cáncer de la mama. Importancia de la pesquisa y diagnóstico precoz. Reflexiones sobre el problema en Venezuela  

Microsoft Academic Search

Early diagnosis of breast cancer is a main progress in modern medicine. We resume advances in clinic, risk factors, radiology, pathology, in situ carcinoma and sub clinic lesions. Results of screening trials using mammography in others countries, decreasing mortality, pros and cons. We analyse the problem in Venezuela and call attention over the great number of advanced lesions seen in

José Antonio; Ravelo Celis

2001-01-01

208

Datirovka zvezdnogo kataloga Ptolemeya po sobstvennym dvizheniyam: tysyacheletnyaya problema reshena %t Dating Ptolemy's star catalogue based on proper motions: the thousand-year-old problem solved  

NASA Astrophysics Data System (ADS)

The thousand-year-old problem of the origin of the star catalogue included in Ptolemy's "Almagest" is considered. The dilemma whether stellar coordinates were based on Hipparchus' or Ptolemy's observations has arisen long ago, because the 1 degree error in ecliptic longitudes may be explained either by Ptolemy's error in the initial longitudes of the Sun, or by the fact that Ptolemy adopted the original Hipparchus' coordinates and transformed them to a 265-year later epoch using an erroneous constant for precession. In fact, only indirect evidence for the Hipparchan origin of most of the coordinates was available so far, and most specialists considered the issue still to be resolved. We have successfully applied a new approach based on stellar proper motions. The time-dependent mutual distances in the configurations including 8 fast stars yield an epoch of -53 ± 130 B.C., whereas the bulk method based on an analysis of the Almagest minus computed coordinate differences for 40 fastest stars yields an epoch of -90 ± 120 B.C. Standard errors in the ancient ecliptic longitudes and latitudes are found to be ?(?cos?) = 18' and ?? = 13', respectively. It is concluded that the stellar coordinates in the Almagest catalogue were observed during Hipparchus' lifetime and that Ptolemy's authorship claim can be rejected at a 94% significance level. Ptolemy's assertion that "we observed as many stars as we could sight down to the sixth magnitude" might simply imply that he found each star of the original catalogue to be near its position in the sky given by Hipparchus, and then adopted Hipparchus' coordinates as measured by a more skilled observer.

Dambis, A. K.; Efremov, Yu. N.

209

Identificação de potenciais problemas relacionados com medicamentos a partir da análise de prescrições de pacientes hipertensos Potential PRM profile found in medical orders from hypertense patients  

Microsoft Academic Search

SUMMARY - The present study aims to trace the potential PRM profile found out in medical orders from hypertense patients at the University Phar macy School from Niterói city. The prescription analysis conside- red aspects as patient's understanding, dissuading drug associations, dosage adequacy and drug inter- actions. Each one of these aspects was correlated to a potential PRM, as defined

Carlos José Miranda Victorio; Selma Rodrigues de Castilho; Patrícia Helena; Castro Nunes

210

Problemas comportamentais e stress em crianças com ansiedade frente ao tratamento odontológico1 Children's behavioral problems and stress as a consequence of dental treatment anxiety  

Microsoft Academic Search

Anxiety and stress are usually related to the dental treatment situation; and pain, physiological and psycological treatment issues may be evaluated specially by children patients, as they are considered well-being potential threats. The comparison between children's stress and behavioral profile of a children's group with high level of anxiety during dental treatment (G1) to a group of children, who cooperate

Cármen Lúcia CARDOSO; Sonia Regina LOUREIRO

211

Treinamento de Habilidades Sociais Educativas para Pais de Crianças com Problemas de Comportamento Training Parent Social Skills for Families of Children with Behavior Problems  

Microsoft Academic Search

This paper describes a Parental Social Skills Program aimed to reduce children behavior problems. The program, lasting 11 weeks, was implemented by means of weekly sequential steps starting with behavior analysis principles for parents to practice a non-coercitive discipline and to learn, models of parental social skills. Parents received weekly home assignments to observe the children's behavior, to establish favorable

Maria Isabel Santos Pinheiro; Vitor Geraldi Haase; Almir Del Prette

212

Labeling disorder - the relationship between conduct problems and drug use in adolescents Transtorno do rótulo - a relação entre problemas de conduta e uso de drogas em adolescentes  

Microsoft Academic Search

Objective: To verify how conduct disorder and conduct problems are associated with gender, age at onset of drug use and categories of drugs used. Method: A test of association was conducted between the presence of comorbidity and gender. Mean age of first use of each drug was compared to mean age of first arrest, of first robbery\\/theft, and of first

Rogerio Shigueo Morihisa; Lúcia Pereira Barroso; Sandra Scivoletto

2007-01-01

213

Evite los problemas de la diabetes: Mantenga sano el sistema nervioso (Prevent Diabetes Problems: Keep Your Nervous System Healthy, Number 6 in a Series of 7).  

National Technical Information Service (NTIS)

Too much glucose (sugar) in the blood for a long time can cause diabetes problems. This high blood glucose (also called blood sugar) can damage many parts of the body, such as the heart, blood vessels, eyes, and kidneys. Heart and blood vessel disease can...

2003-01-01

214

Evite los problemas de la diabetes: Mantenga los rinones sanos (Prevent Diabetes Problems: Keep Your Kidneys Healthy, Number 3 in a Series of 7).  

National Technical Information Service (NTIS)

Too much glucose (sugar) in the blood for a long time can cause diabetes problems. This high blood glucose (also called blood sugar) can damage many parts of the body, such as the heart, blood vessels, eyes, and kidneys. Heart and blood vessel disease can...

2001-01-01

215

Resection of parenchymatous organs using pulse YAG:Nd laser radiation at 1.44-um and 1.32-um wavelengths  

NASA Astrophysics Data System (ADS)

We have demonstrated that when using in surgical operations the radiation of YAG:Nd laser with 1.44 micrometers wavelength exhibits better cutting capabilities as compared to the same laser at 1.32 micrometers wavelength. The laser scalpel at 1.44 micrometers also provides adequate hemostasis at non-typical section of parenchymals without blood vessel ligation, however this capability is higher for 1.32 micrometers radiation. It is possible to combine the advantages of both radiations by repetitive switching the laser between two wavelengths or mixing two simultaneously generate wave in one optical waveguide. Application of several YAG:Nd laser wavelengths with different absorption coefficients in a single operation on the soft tissue allows one to coagulate large-scale blood vessels and to minimize thermal damages of surrounding tissue.

Zubeev, Pavel S.; Rotkov, A.; Vaganov, I.; Skvortsova, I.; Kamensky, Vladislav A.; Gelikonov, Grigory V.; Sergeev, Alexander M.

1999-06-01

216

Laser-tissue interaction of a continuous-wave 2-um, 3-um cascade oscillation fiber laser: sharp incision with controlled coagulation layer thickness  

NASA Astrophysics Data System (ADS)

We studied coagulation layer controlled incision with newly developed continuous wave 2 micrometer, 3 micrometer cascade oscillation fiber laser in vitro. Since this laser device simultaneously oscillates 2 micrometer and 3 micrometer radiation, we could change tissue interaction by arranging power ratio of 2 micrometer to 3 micrometer radiation. About one watt of total irradiation power with various power ratios was focused to extracted fresh porcine myocardium or anesthetized rabbit on an automatic moving stage to obtain line incision. Macro photograph and microscopic histology were used to observe tissue interaction phenomenon. The incised specimen showed that precise cutting groove with thin coagulation layer was attained by a 3 micrometer based radiation, meanwhile addition of 2 micrometer radiation to 3 micrometer radiation made coagulation layer thicker. A heat conduction simulator using finite-element method was used to qualitatively explain obtained coagulation layer thickness. This precise incision with controllable side coagulation layer may effective to control bleeding during incision, for instance, for skin, liver, and kidney incisions. Pure continuous wave radiation of 2 micrometer and 3 micrometer may eliminate stress wave induced tissue damage which is frequently found in Ho:YAG and/or Er:YAG tissue interactions. Moreover, sapphire fiber might offer flexible power delivery to this new laser to establish endoscopic application and/or to improved beam handling.

Arai, Tsunenori; Sumiyoshi, Tetsumi; Naruse, Kyota; Ishihara, Miya; Sato, Shunichi; Kikuchi, Makoto; Kasamatsu, Tadashi; Sekita, Hitoshi; Obara, Minoru

2000-06-01

217

Recognition of favorable zones for uranium and thorium accumulation, at Um Ara-Um Shilman granitic pluton, South Eastern Desert, Egypt, using airborne spectrometric and magnetic data  

NASA Astrophysics Data System (ADS)

The objective is aimed at identifying significant U and Th anomalies, the amount of re-mobilization of U and Th, the structural framework of the granite pluton and the distribution of spectrometric anomalies. The study revealed that the granite pluton could be represented as a single radio-lithologic unit excluding abnormal measurements exceeding X¯ + 2S. It also revealed the existence of eight strong spectrometric anomalies. Observed values of eU correlate well with eTh, r = 0.72, while the correlation between eU/eTh and eU is lacking, r = 0.190. Meanwhile, there is a negative correlation between eU/eTh and eTh, r = -0.335. This deficiency in correlation suggests a limited or zero remobilization of uranium, which was partly governed by magmatic processes. An interpretative basement structural map of the study-area showed some striking features: four NW-trending faults of first-order magnitude (probably shear zones); three NE-trending faults of second-order magnitude; a series of third-order magnitude faults trending in different directions and, questionably, strike-slip faults as well as some basic and acidic dykes. Most of the radioactive anomalies were found within or near the major contact faults which may act as channels for mineralized fluids from the subsurface. These fluids possess increased concentrations of U and/or Th which could exist in appropriate chemical and/or structural traps. The U and Th anomalies were found to be associated with the northern and southern parts of the granite pluton respectively. The difference between the northern and southern parts of the granite pluton may be attributed to differences in radioelement content, the effect of partial and/or complete digestion of older rocks, or to different levels of erosion.

Elkattan, Elsayed M.

1995-06-01

218

Mild steels coated with 14% manganese covered electrodes (E7-UM-200-K and E1-UM-350): Phenomena at the steel-coating interface  

SciTech Connect

In this work the authors have studied the phenomena in the interface of the coating made on soft carbon steel with electrodes with a high content of manganese. The study has been done with scanning electron microscope and X-rays mapping images. These images show how the alloy elements are distributed in each of the constituent elements presented in the interface, and the nature of these constituents. These results have allowed us to verify that many of the problems that arise in homogeneous joints, as such localised corrosion, low interface resistance, etc., happened, precisely in these regions. As a help to determine the nature of the constituent elements, microhardness measurements have also been made.

Molleda, F. [Escuela Tecnica Superior de Ingenieros Navales de Madrid (UPM) (Spain)]. E-mail: fmolleda@etsin.upm.es; Mora, J. [Escuela Tecnica Superior de Ingenieros Navales de Madrid (UPM) (Spain); Molleda, F.J. [ESAB Iberica (Spain); Carrillo, E. [Escuela Tecnica Superior de Ingenieros Navales de Madrid (UPM) (Spain); Mora, E. [Escuela Tecnica Superior de Ingenieros Navales de Madrid (UPM) (Spain); Mellor, B.G. [University of Southampton (United Kingdom)

2006-12-15

219

Definição de um Ambiente para apoiar a Gerência de Conhecimento para Projeto de Banco de Dados utilizando um Framework Conceitual e Padrões de Análise  

Microsoft Academic Search

Resumo Uma das grandes dificuldades no desenvolvimento de software é que, muitas vezes, os desenvolvedores não estão familiarizados com o domínio para o qual o software está sendo desenvolvido. A necessidade de apoiar o desenvolvimento de software em domínio específicos tem sido endereçada tanto por Ambientes de Desenvolvimento de Software Orientados a Domínio (ADSODs), como pelo uso de gerência do

Viviane C. Dias; Carlos A. M. Pietrobon; Mário Fabiano Alves

220

CÂNCER: UM ESTUDO DAS CAUSAS E CONSEQÜÊNCIAS SOBRE UM GRUPO DE PACIENTES CANCER: A STUDY OF THE CAUSES AND CONSEQUENCES OF A GROUP OF PATIENTS  

Microsoft Academic Search

PALAVRAS-CHAVES: Câncer, Dificuldades, Estratégias de Enfrentamento. ABSTRACT: The Hospital Psychology has contribbuted to the humanization of hospitals and their practices as it promotes the maintenance of health, prevention and treatment of diseases together with health teams, patients and families. The present study aimed at identifying the causes of câncer and its consequences in a group of patients and their families.

Carmen Garcia de Almeida; Renata Garcia de Almeida Moraes; Garcia de Almeida Moraes

221

Comparing the use of 4.6 um lasers versus 10.6 um lasers for mitigating damage site growth on fused silica surfaces  

SciTech Connect

The advantage of using mid-infrared (IR) 4.6 {micro}m lasers, versus far-infrared 10.6 {micro}m lasers, for mitigating damage growth on fused silica is investigated. In contrast to fused silica's high absorption at 10.6 {micro}m, silica absorption at 4.6 {micro}m is two orders of magnitude less. The much reduced absorption at 4.6 {micro}m enables deep heat penetration into fused silica when it is heated using the mid-IR laser, which in turn leads to more effective mitigation of damage sites with deep cracks. The advantage of using mid-IR versus far-IR laser for damage growth mitigation under non-evaporative condition is quantified by defining a figure of merit (FOM) that relates the crack healing depth to laser power required. Based on our FOM, we show that for damage cracks up to at least 500 {micro}m in depth, mitigation using a 4.6 {micro}m mid-IR laser is more efficient than mitigation using a 10.6 {micro}m far-IR laser.

Yang, S T; Matthews, M J; Elhadj, S; Cooke, D; Guss, G M; Draggoo, V G; Wegner, P J

2010-10-21

222

Government policies and deforestation in Brazil's Amazon region  

SciTech Connect

Contents include: Brazil's Amazonian Forests (biological diversity, the magnitude and rate of deforestation, proximate causes of deforestation); and the evolution of regional policies (operation Amazonia, the Belem-Brasilia Highway, incentives for livestock development, the National Integration Program, the Cuiaba-Porto Velho Highway and Polonoroeste, the era of big projects).

Mahar, D.J.

1989-01-01

223

Deforestation and Carbon Emissions in Amazonia: Simulating the Impact of Connecting Brazil's State of Roraima to the \\  

Microsoft Academic Search

The BR-319 Highway, connecting Porto Velho, Rondonia to Manaus, Amazonas, was the main migration link to Roraima from 1975 until closure of the highway in 1988. Reconstruction of the highway is included in the Brazilian federal government's Program for the Acceleration of Growth (PAC) along with the construction of the Santo Antônio and Jirau hydroelectric dams in Rondônia. Rondônia, in

Paulo Eduardo Barni; Philip Martin Fearnside; Paulo Maurício; Lima de Alencastro Graça

2009-01-01

224

Estrategias participativas en la identificación de la carga de trabajo y problemas de salud en docentes de escuelas primarias. Participative strategy in work load and health disorders identification in teachers of primary school  

Microsoft Academic Search

A study with purpose of capturing the perceived issues, which increase teacher's workload, such as their probable effects on health, was carried out. Transversal study designed in 8 public primary schools, located in Mariño municipality of Aragua state (Venezuela). The sample was of 136 active teachers. Data collection carried out with participative strategies as: collective interviews, corporal scheme and risk

Evelin Escalon; Ligia Sánchez Tovar; Mery González de Medina

225

ZONA DE DESARROLLO PROXIMO, SUJETO Y SITUACIÓN. EL PROBLEMA DE LAS UNIDADES DE ANÁLISIS EN PSICOLOGÍA EDUCATIVA ZONE OF PROXIMAL DEVELOPMENT, SUBJECT AND SITUATION. THE PROBLEM OF UNITS OF ANALYSIS IN EDUCATIONAL PSYCHOLOGY  

Microsoft Academic Search

This paper aims to present some of the implications that the work of Lev Vigotsky and other productions within the socio-cultural approaches have had in the field of educational psychology. It will be mainly focused on the contributions of these perspectives to the discussion about the units of analysis used to explain developmental processes. Certain uses of the Zone of

Ricardo Baquero Orueta

226

LA GERENCIA DE PROYECTOS DE RESPONSABILIDAD SOCIAL: UN PROBLEMA ÉTICO PRIORITARIO EN LA AGENDA UNIVERSITARIA THE MANAGEMENT OF SOCIAL RESPONSIBILITY PROJECTS: A HIGH-PRIORITY ETHICAL PROBLEM IN THE UNIVERSITY AGENDA  

Microsoft Academic Search

RESUMEN Este trabajo destaca que la gerencia de proyecto de Responsabilidad Social es una urgencia ética en la agenda de las organizaciones universitarias. Se razona sobre la Responsabilidad Social como macro proyecto ético universitario; como se han manejado los proyectos en el ámbito universitario y sobre como el Modelo Intellectus es una opción exitosa. Mediante una Investigación documental, se concluyó

Revista ORBIS; Ciencias Humanas; Jorge Palencia; Isis Bracho; Lesbia Vargas

227

Problema vizual'noj registratsii nablyudenij v opticheskoj astronomii XVII-XVIII vekov %t Problem of visual registration of observations in optical astronomy in the 17th-18th centuries  

NASA Astrophysics Data System (ADS)

This paper attempts to explain the growth of optical astronomy as a result of more general social and cultural change in European life during the two post-Renaissance centuries. It shows how the introduction of optical instruments into astronomical work was accompanied (and partly conditioned) by a few nonastronomical practices, such as collecting unusual things and their images, producing illusionary effects by means of optical devices, manufacturing pictures that could disturb the common visual perception, etc. The paper draws particular attention to the practices of manipulation with visual images that could help to introduce "illusionary" optical knowledge into making "true" drawings from natural objects, including celestial ones. In this way, the formation of new astronomical language can be understood as closely connected to the explicit formulation of technological instructions and legal rules for making copies from natural objects, as well as the general development of printing production and broadening of the market of printed illustrations. These often not enough co-ordinated practices stipulated the shift of optical astronomy into a significant part of seigniorial culture, where it obtained recognition as an essentially new and elite knowledge, associated with particular technological vigilance. During the transition of European monarchies into the absolutist social order, astronomy, on a level with other court services, assumed a shape of professional occupation supplied with certain monetary salaries, a stable position in official hierarchy, and supreme privileges. This was the way by which astronomy merged with the other natural studies and became one of the publicly recognised scientific disciplines.

Ivanov, Kostantin V.

228

AN?LISE DA INSER??O DOS TEMAS DE HUMANIDADES E ?TICA, COM METODOLOGIA DE APRENDIZAGEM BASEADA EM PROBLEMAS, EM CURRICULO M?DICO INTEGRADO EM ESCOLA P?BLICA 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.

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

2009-01-01

229

Cooperazione Scientifica Italia (ISS) Ecuador (IFA). La Prevenzione Delle Patologie da Amianto: un Problema di Sanita Pubblica. (Scientific Cooperation Between Italy (ISS) and Ecuador (IFA). The Prevention of Asbestos-Related Diseases: a Public Health Concern.)  

National Technical Information Service (NTIS)

This report is aimed at discussing the health impact caused by asbestos exposure in the workplace as well as in the general environment. The report relies on a working hypothesis aimed at promoting contrast measures based on scientific evidence and intern...

D. Marsili P. Comba R. Harari

2009-01-01

230

Desigualdades sociais, saúde e bem-estar: oportunidades e problemas no horizonte de políticas públicas transversais Social inequalities, healthcare and well-being: opportunities and obstacles on the horizon of transversal public policies  

Microsoft Academic Search

The development of a distributive jus- tice model that is responsive to new claims and demands in the social policy field requires in-depth examinations and critiques of the ways in which public policies are drawn up and implemented. Reconstituting and analyzing different institu- tional dynamics, decision contexts and program performances emerge as tasks that are crucial to the quest for

Rosana Magalhães; Luciene Burlandy; Mônica de Castro; Maia Senna

231

Problema vizual'noj registratsii nablyudenij v opticheskoj astronomii XVII-XVIII vekov %t Problem of visual registration of observations in optical astronomy in the 17th-18th centuries  

Microsoft Academic Search

This paper attempts to explain the growth of optical astronomy as a result of more general social and cultural change in European life during the two post-Renaissance centuries. It shows how the introduction of optical instruments into astronomical work was accompanied (and partly conditioned) by a few nonastronomical practices, such as collecting unusual things and their images, producing illusionary effects

Kostantin V. Ivanov

2005-01-01

232

International meeting. Complexity in the Living: A Problem-Oriented Approach. Rome, September 28-30, 2004. (Convegno internazionale. La Complessita del Vivente: un Approccio Orientato al Problema. Roma, 28-30 Settembre 2004).  

National Technical Information Service (NTIS)

The scientific world has the clear perception that an interdisciplinary approach is urgently needed for attacking the many yet unsolved problems of today science. This attitude has several roots, including the search of biologists for quantitative foundat...

A. Colosimo A. Giuliani J. P. Zbilut P. Sirabella R. Benigni

2005-01-01

233

Estudo de codigos de analises de reatores disponiveis no IPEN e suas aplicacoes em problemas de difusao de neutron em multigrupo. (Study of reactor analysis codes available at IPEN and their application to problems involving the diffusion theory).  

National Technical Information Service (NTIS)

Two computer codes that are available at IPEN for analyses of static neutron diffusion problems are studied and applied. The CITATION code is animed at analyses of criticality, fuel burnup, flux and power distributions etc, in one, two, and three spatial ...

A. G. Mendonca

1980-01-01

234

Evite los problemas de la diabetes: Mantenga los pies y la piel sanos (Prevent Diabetes Problems: Keep Your Feet and Skin Healthy, Number 5 in a Series of 7).  

National Technical Information Service (NTIS)

Too much glucose (sugar) in the blood for a long time can cause diabetes problems. This high blood glucose (also called blood sugar) can damage many parts of the body, such as the heart, blood vessels, eyes, and kidneys. Heart and blood vessel disease can...

2001-01-01

235

MÉTODOS COMPUTACIONALES ORIENTADOS A LA OBTENCIÓN DEL ÁRBOL EMST: UN APORTE AL PROBLEMA DE STEINER METHODS OF COMPUTER ORIENTED TO THE OBTAINING OF EMST TREE: A CONTRIBUTION TO THE STEINER PROBLEM  

Microsoft Academic Search

A Euclidean Minimum Spanning Tree (EMST) is a tree or subgraph without cycles, that allows to interconnect all the vertices and to diminish the length overall of the edges of a certain graph. Despite this minimization, through the addition of new vertices to the original set it is managed to carry out an optimal minimization but. These trees Trees of

Pablo López; Carlos Yañez; Luzmila Pró; Jaime Alcalde

236

Estudo de perturbações orbitais de satélites artificiais, considerando ressonância, através de transformações canônicas  

NASA Astrophysics Data System (ADS)

Aplicações recentes de satélites artificiais, principalmente aquelas com finalidades geodinâmicas ou altimétricas, requerem órbitas determinadas com bastante precisão. Em particular os satélites do sistema GPS, que têm sido envolvidos direta ou indiretamente em tais problemas, necessitam de ter suas órbitas muito bem conhecidas. As órbitas dos satélites GPS tem uma peculiaridade: o período orbital está em comensurabilidade 2: 1, aproximada, com o período de rotação da Terra. A existência de ressonâncias faz com que métodos usuais de teoria de perturbações não possam ser usados para se estudar órbitas com esta característica. No presente trabalho são apresentados dois processos para se estudar tal problema. Para tanto o sistema dinâmico que descreve o movimento orbital de satélites artificiais, perturbado por forças que derivem ou não de um potencial, incluindo ressonância, é inicialmente colocado em forma canônica estendida. Um dos processos apresentado é baseado na teoria de Lie-Hori e o outro em uma seqüência de transformações canônicas. Perturbações devidas ao geopotencial, ao arrasto atmosférico, à pressão de radiação solar direta (incluindo o efeito da sobra) e à ressonâncias do movimento orbital com o movimento de rotação da Terra são consideradas. Neste trabalho, sucintamente, os dois processos originais desenvolvidos em colaboração com o autor são apresentados. Simulações são feitas mostrando o efeito da ressonâncias 2: 1 na evolução temporal de elementos orbitais de satélites artificiais. Exemplos são exibidos para diversas órbitas considerando-se diferentes excentricidades e inclinações, incluindo às do tipo GPS.

Vilhena de Moraes, R.

2003-08-01

237

ELAIS optical ident. at 15um & 1.4GHz (Gonzalez-Solares+, 2005)  

NASA Astrophysics Data System (ADS)

To identify the mid-IR sources with optical objects we use the data from the Wide Field Survey (WFS, McMahon et al., 2001NewAR..45...97M). This survey has been carried out using the Wide Field Camera (WFC) on the 2.5-m Isaac Newton Telescope (INT) on the Observatorio del Roque de Los Muchachos (La Palma). (2 data files).

Gonzalez-Solares, E. A.; Perez-Fournon, I.; Rowan-Robinson, M.; Oliver, S.; Vaccari, M.; Lari, C.; Irwin, M.; McMahon, R. G.; Hodgkin, S.; Ciliegi, P.; Serjeant, S.; Willott, C. J.

2006-02-01

238

Compact dual wavelength 3.30 to 3.47-um DIAL lidar  

NASA Astrophysics Data System (ADS)

A compact (2'6' X 2'5' X 1'1') 3.30 - 3.47-micrometers DIAL lidar has been constructed for base remediation and chemical monitoring. The lidar system is designed for short range (0.5 km maximum) aerosol backscatter detection of light hydrocarbons with sensitivities at parts-per-million level in a 30-m ranging bin. The system can also operate in the topographic mode. The on-line and off-line wavelengths are produced sequentially using a dual crystal intra-cavity KTA OPO. Detection is by means of an 8-in Newtonian telescope coupled to a Stirling cycle cooled InSb detector. The system incorporates an onboard digital signal processor and controller, operator's interface is furnished by a laptop PC. Results of initial tests using diesel fuel and a solvent are presented.

Degtiarev, Egor V.; Geiger, Allen R.; Richmond, Richard D.

2000-07-01

239

Um protocolo de perda de peso e a participação dos proprietários no tratamento da obesidade canina  

Microsoft Academic Search

The success of a weight loss program for pets depends on the owners collaboration. Their compliance is fundamental in establishing the correct food management. The objective of this study was to compare the effectiveness of a weight loss program in two groups of dogs, one maintained under experimental conditions and the other with their owners. The same hypocaloric food was

Aulus Cavalieri Carciofi; Karina Nogueira; Venturelli Gonçalves; Ricardo Souza Vasconcellos; Rodrigo Sousa Bazolli; Márcio Antonio Brunetto; Flávio Prada

2005-01-01

240

AIR FILTER PARTICLE-SIZE EFFICIENCY TESTING FOR DIAMETERS GREATER THAN 1UM  

EPA Science Inventory

The paper discusses tests of air filter particle-size efficiency for diameters greater than 1 micrometer. valuation of air cleaner efficiencies in this size range can be quite demanding, depending on the required accuracy. uch particles have sufficient mass to require considerati...

241

A 0.18-um CMOS Array Sensor for Integrated Time-Resolved Fluorescence Detection  

PubMed Central

This paper describes the design of an active, integrated CMOS sensor array for fluorescence applications which enables time-gated, time-resolved fluorescence spectroscopy. The 64-by-64 array is sensitive to photon densities as low as 8.8 × 106 photons/cm2 with 64-point averaging and, through a differential pixel design, has a measured impulse response of better than 800 ps. Applications include both active microarrays and high-frame-rate imagers for fluorescence lifetime imaging microscopy.

Huang, Ta-chien D.; Sorgenfrei, Sebastian; Gong, Ping; Levicky, Rastislav; Shepard, Kenneth L.

2010-01-01

242

CAR dry etching technology to produce 0.13 um reticle  

NASA Astrophysics Data System (ADS)

Process optimizations have been done to carried out on '0.13micrometers ' reticle manufacturing with feature sizes of under 520nm. Micro-leading < 10nm and CD uniformity (3S) < 10nm process for binary Cr reticle can be achieved with dry etching process using chemical amplify resists blanks. HL-950 writer with resist films of 400nm and dy etching with Centura system were adopted for the purpose. It has shown that by optimizing selectivity window in Centura system without assistant gas addition, one could improve the process capability significantly. Design of experiment was applied to investigating the effects of source power, bias power and total pressure on CD uniformity, Micro-loading, Linearity and Process bias. With the DOE results, the process conditions could be fine-tuned to an optimal set of variables, which allow us to manufacture 0.13 micrometers masks.

Chou, W. Z.; Tsai, Fei-Gwo; Tuo, C. C.; Yoo, Chue-San; Tsai, T. S.; Shue, Lawrence

2002-07-01

243

"I May Be Crackin', But Um Fackin": Racial Humor in "The Watsons Go To Birmingham--1963"  

ERIC Educational Resources Information Center

This article examines the utilization of racial humor in Christopher Paul Curtis' novel, "The Watsons Go To Birmingham--1963." The theoretical perspectives that inform the analysis include critical race theory and humor theory. The results of the analysis reveal that the use of humor in this book is influenced to a significant degree by race and…

McNair, Jonda C.

2008-01-01

244

Mineral chemistry of albite-enriched granitoids at Um Ara, Southeastern Desert, Egypt  

SciTech Connect

Mineral chemistry and typomorphic characteristics are used to monitor the physicochemical evolution of late-magmatic to postmagmatic alteration processes that resulted in the development of a radioactive and albite-enriched microgranite shock. The mineral paragenesis indicates that postmagmatic fluids were enriched in Nb, Zn, U, Th, Zr, and Y, in addition to Rb, Li, and F. Manganocolumbite with extremely high Nb/(Nb+Ta) (0.99), Mn/(Mn+Fe) (0.82), and zircon with high Zr/(Zr+Hf) (0.97) indicate crystallization under alkaline, relatively high-temperature conditions (>425{degrees}C). The close association of manganocolumbite, Nb-Mn-Zn-rich ilmenite (with 1.2 to 14.5 wt% ZnO), spessartine garnet (with 68.2-89.4 mol% spessartine), zircon, xenotime, zinnwaldite mica (up to 5.98 wt% F), and fluorite indicates the strong affinity of the elements of Nb, Y, Zr, Mn, and Zn for stable complexing by K{sup +}, Na{sup +}, Li{sup +}, and F{sup -}-rich supercritical fluids during the course of extraction and transportation. The enrichment of the interacting fluid in U and Th is depicted by the presence of up to 1.6% UO{sub 2} in manganocolumbite and Hf-bearing zircon, and up to 10.5% ThO{sub 2} in monazite, in addition to locally abundant thorite and uranophane. It is suggested that the uranium mineralization, mainly as fracture fillings, formed during the waning stage of hydrothermal activity. 30 refs., 5 figs., 2 tabs.

Abdalla, Hamdy; Matsueda, Hiroharu; Ishihara, Shunso [Hokkaido Univ., Sapporo (Japan)] [and others

1994-11-01

245

O idoso nas instituições gerontológicas: um estudo na perspectiva das representações sociais  

Microsoft Academic Search

RESUMO: Este trabalho teve como objetivo identificar e comparar as representações sociais de velhice entre idosos de Grupos de Convivências (GC's) e de Instituições de Long a Permanência (ILPI's). Participaram 50 idosos (25 dos GC's e 25 das ILPI's), de ambos os sexos (60% feminina e 40% masculina), com média de idade de 82 anos. Utilizou-se Entrevistas Semi-Estruturadas, realizadas de

Ludgleydson Fernandes de Araújo; Maria da Penha de Lima Coutinho; Maria de Fátima de Souza Santos

2006-01-01

246

TIMMI: a 10-um camera for the ESO 3.6-m telescope  

Microsoft Academic Search

TIMMI is the ESO Infrared camera dedicated to 10 micrometers high angular resolution imaging of the austral sky. This camera, built for the European Southern Observatory (ESO) by the Service d'Astrophysique at Saclay (SAp), has been successfully commissioned during 2 observing runs at the ESO 3.6-m telescope: one in July 1992 and the other in January 1993. Based on a

Pierre-Olivier Lagage; Rene Jouan; Pierre Masse; P. Mestreau; Andre Tarrius; Hans U. Kaeufl

1993-01-01

247

New development of cost-effective sub-0.18-um lithography with i-line  

NASA Astrophysics Data System (ADS)

To reach the sub-0.3 micrometer contact hole pattern by i-line lithography, some advanced technology was introduced such as Phase Shift Mask (PSM) and/or photoresist (PR) flow process. It may be possible that the contact hole is patterned with 0.18 micrometer resolution by the PR flow process with PSM. However, PSM cause the Tg temperature of resist down at the phase shift area. And it also leads the bulk effect by the different pattern density at the cell edge. Thus, during the PSM + PR flow process, 'contact shift' and 'contact distortion' (so-called 'Eyebrow') defects are unavoidable. To repel these defects, we designed the new lithographic process; the UV-bake before thermal flow process. By the UV light at 130 +/- 10 degrees Celsius, the resist was cured at the resist surface. This surface-cured resist has the higher Tg temperature even the normal PSM reticle induces the Tg down. Top surface curing (hardening) also minimized the bulk effect. To maximize the UV bake effects, we developed new resist which was optimized to UV-bake process. By UV-bake process with new resist, the 0.2 micrometer contact hole was patterned. ET margin was 14 nm/10 mJ, and DOF margin was 0.6 micrometer at the mass fabrication device. The 'Eyebrow' and contact shift defects are not detected.

Chung, Hoesik; Jung, Jinhang; Kim, Youngsun; Choi, KwangSoek; Yoo, NamHee; Yoon, Sangwoong; Park, JeEung

2000-06-01

248

Scintillation measurement with 7-um-band tunable laser in different seasons  

Microsoft Academic Search

Results of the field measurement of scintillation for a 7 micrometers band semiconductor laser beam are described. To investigate the contribution of absorption, wavelength of the IR laser was tuned to a H2O absorption line center. The scintillation for a 0.67 micrometers visible laser was also monitored to compare with the IR's scintillation. This experiment was carried out in the

Naoki Kagawa; Osami Wada; Ryuji Koga

1994-01-01

249

Erosão hídrica em um Argissolo Vermelho-Amarelo, sob diferentes padrões de chuva simulada  

Microsoft Academic Search

This study was carried out in order to determine the soil, water and nutrient losses in a Yellow-Red Ultisol, under four different patterns of simulated rainfall. The experiment was conducted at the Embrapa Agrobiologia experimental field, located in the municipality of Seropédica, Rio de Janeiro, Brazil. The study consisted in the application of simulated rains using variable rainfall intensity classified

João R. de Oliveira; Marinaldo F. Pinto; Wanderley de J. Souza; José G. M. Guerra; Daniel F. de Carvalho

2010-01-01

250

COMO IMPLANTAR UM PROGRAMA DE ATIVIDADE FÍSICA NA EMPRESA: SUGESTÃO SEM IMPOSIÇÃO  

Microsoft Academic Search

This work deals with the practice of sport in the company, an expedient that has existed for a long time in European and Asian countries, later adopted in the United States, and arriving in Brazil in the second half of the past century, particularly in the South West and Southern regions - São Paulo, Paraná and Rio Grande do

José Maurício Capinussú

2005-01-01

251

Comparison of I-line and deep-UV technologies for 0.35-um lithography  

NASA Astrophysics Data System (ADS)

An experimental comparison of i-line lithography and deep-UV lithography was performed for 0.35 micrometers patterning of isolation level, polysilicon level, and the contact level. Both techniques used standard illumination and standard masks. The i-line process used conventional single level DNQ resists. The deep-UV work used a commercially available single level chemically amplified positive resist, with additional use of bottom-layer organic anti-reflective layers on some levels. The results highlighted the problems of pushing i-line lithography to the 0.35 micrometers regime and demonstrated the manufacturable process latitudes available with deep-UV lithography.

Orvek, Kevin J.; Ferrari, Joseph J.; Dass, Sasha K.; Corliss, Daniel A.; Buchanan, James R.; Piasecki, MaryAnn

1994-05-01

252

Linfoma subcutâneo de células T tipo paniculíte - A propósito de um caso clínico  

Microsoft Academic Search

T cell cutaneous lymphoma (T.C.C.L.), panni- culitis type, is a rare malignancy of postthymic T cells. A clinical case of a twenty-three year old, female patient, with a five-year evolution of recurret subcutaneous nodules and, later on, hepatosplenomegaly and fever is presented. The diagnosis was only possible with repeated cutaneous byopsies and in late stage of the disease. The patient

Marisa Antunes; Bruno Grima; Alexandra Chaveiro; Cândida Fernandes; Albertina Nunes; Ana Afonso; Maria Gomes; Nuno Riso; Vaz Riscado

253

Território, Ruralidade e Fumicultura: um estudo no Instituto Souza Cruz - Programa Cedejor  

Microsoft Academic Search

The intention of this work is to present an agroind ustry of tobacco with representation, in this in this specific case the Souza Cruz, which pr omotes programs in some localities of the South of the country propitiating the territorialit y. The entire production of the tobacco, the

GERALDINO CARNEIRO ARAÚJO; MIRIAM PINHEIRO BUENO

254

Experiments and PIC Simulations on the UM Large Area, ECR Electric Propulsion Neutralizer  

NASA Astrophysics Data System (ADS)

We report experimental and simulation results of the Getty ECR plasma source [1, 2], as a plasma neutralizer for electric propulsion. This device generates a uniform plasma over a large ECR area created by rows of permanent magnets placed between a large, S-band microwave horn and a chamber. The metal magnet bars are cross-polarized to minimize microwave reflection. Electron densities are overdense (up to 6E11 /cc) with 2.45 GHz at 100's W. Currents were extracted by biasing a collector positively with both pulsed and DC power supplies. For low DC voltages, electron currents were measured (rather than discharge currents). Experimental parameters: gas pressure, extraction voltage, microwave power, and the position and size of the collector were varied and compared. 2D MAGIC simulations of this source confirmed that most energy transfer from the microwaves into particles occurs near the ECR region, and cross-field diffusion is under investigation with MAGIC. [1] W.D. Getty and J.B. Geddes, J. Vac. Sci. Tech. B, v.12, pp. 408-415 (1994). [2] W.D. Getty, US Patent # 5,466,295 (1995).

Hidaka, Y.

2005-10-01

255

0.25-um logic manufacturability using practical 2D optical proximity correction  

NASA Astrophysics Data System (ADS)

Simplified 2-D Optical Proximity Correction (OPC) algorithms have been devised, calibrated and implemented on a state-of- the-art 0.25 micrometer random logic process in order to reduce metal line pullback on critical layers. The techniques used are rules-based, but are characterized by fast and robust data conversion algorithms, calibrations based on actual process data improvements in reticle manufacturability, and inspectability of the resultant OPC corrected reticles. Application to local interconnect and metal patterning has corrected fundamental yield-limiting mechanisms in these levels.

Kling, Michael E.; Lucas, Kevin D.; Reich, A.; Roman, Bernard J.; Chuang, Harry; Gilbert, Percy V.; Grobman, Warren D.; Travis, Edward O.; Tsui, Paul; Vuong, Tam; West, Jeff P.

1998-06-01

256

Um estudo sobre os impactos da privatização no setor de Telecomunicações brasileiras 1  

Microsoft Academic Search

The changes in the section of Brazilian telecommunications in the last five years are impressive. Of a system state monopolist, frequently inefficient and invested very on this side of the necessary, for a new section with a modern and competitive structure, impelled by great investments and aggressive investors' commitments. The privatization in the section Telecommunications increased the competition among the

Peterson Cesário Saraiva; André Luiz Cordeiro Cavalcanti

257

CLIMA ORGANIZACIONAL EM UMA EMPRESA DE GRANDE PORTE DO SETOR AUTOMOBILÍSTICO: UM ESTUDO LONGITUDINAL  

Microsoft Academic Search

The enterprise environment has become each more competitive in the last decades, increasing your degree of complexity, generating uncertainties about the future and demanding fast changes in the organizations and theirs employees. In this way, a valuation of the people in the organization is observed, in the direction to attempt against for questions related to the Management of Life Quality

Rita de Cássia Stadykoski; Silvio Roberto Stefano

258

SPIRE (f250um>17.4mJy) GOODS-N galaxies (Symeonidis+, 2011)  

NASA Astrophysics Data System (ADS)

The IR data come from the Herschel/SPIRE Science Demonstration Phase (SDP) observations of the Great Observatories Origins Deep Survey (GOODS)-North, taken as part of the Herschel Multi-tiered Extragalactic Survey (HerMES) guaranteed-time key programme. (1 data file).

Symeonidis, M.; Georgakakis, A.; Seymour, N.; Auld, R.; Bock, J.; Brisbin, D.; Buat, V.; Burgarella, D.; Chanial, P.; Clements, D. L.; Cooray, A.; Eales, S.; Farrah, D.; Franceschini, A.; Glenn, J.; Griffin, M.; Hatziminaoglou, E.; Ibar, E.; Ivison, R. J.; Mortier, A. M. J.; Oliver, S. J.; Page, M. J.; Papageorgiou, A.; Pearson, C. P.; Perez-Fournon, I.; Pohlen, M.; Rawlings, J. I.; Raymond, G.; Rodighiero, G.; Roseboom, I. G.; Rowan-Robinson, M.; Scott, D.; Smith, A. J.; Tugwell, K. E.; Vaccari, M.; Vieira, J. D.; Vigroux, L.; Wang, L.; Wright, G.

2012-06-01

259

Análise do comportamento e a habilidade de leitura: um levantamento crítico de artigos do JABA  

Microsoft Academic Search

The present work intended to identify the approach ways proposed by the Behavior Analysis to teach or remedy this skill, throughout an analysis of an article review from the Journal of Applied Behavior Analysis - JABA's over the years 1968 to 2002 about reading skills on the regular teaching. A data bank was build up from an article selection found

Luiza Cristina Mauad; Maria do Carmo Guedes; Roberta Gurgel Azzi

260

Trabalho e morbidade comum em indústria de celulose e papel: um perfil segundo setor  

Microsoft Academic Search

The purpose of this study was to identify associations between common morbidity and work accidents and the respective departments in a pulp and paper industry, describing work loads and performing broad control of potential confounding factors. We studied all the workers from a specific pulp and paper industry, using a cross-sectional design and interviews at the workplace (n=671) with a

Anaclaudia Gastal Fassa; Luiz Augusto Facchini; Marinel Mór Dall'Agnol

1996-01-01

261

New Co-containing glass ceramics saturable absorbers for 1.5-um solid state lasers  

NASA Astrophysics Data System (ADS)

New saturable absorber Q-switch for 1.54 %mum Er: glass laser is present. The saturable absorber is transparent glass ceramic containing magnesium-aluminum spinel nanocrystallites doped with tetrahedrally coordinated Co2+ ions. Q-switched pulses of up to 5.5 mJ in energy and 80 ns in duration at 1.54 micrometers were achieved. Relaxation time of the 4A2 to 4T1(4F) transition bleaching was measured to be (450+/- 150)ns. Ground-state absorption cross-sections at 1.54 micrometers wavelength were estimated to be (3.2+/- 0.4)*10-19 cm2 and (5.0+/- 0.6)X10-20 cm2, respectively. Results of study absorption and luminescence spectra of different glass ceramics on the base of magnesium-aluminum, zinc-aluminum, lithium-aluminum spinel nanocrystallites doped with tetrahedrally coordinated Co2+ ions are also analyzed.

Malyarevich, Alexander M.; Denisov, Igor A.; Yumashev, Konstantin V.; Chuvaeva, Tamara I.; Dymshits, Olga S.; Onushchenko, Alexei A.; Zhilin, Alexander A.

2001-03-01

262

Megapixel HgCdTe MWIR focal plane array with a 15-um pitch  

NASA Astrophysics Data System (ADS)

In this paper we present the first demonstration at LETI infrared laboratory of a megapixel HgCdTe MWIR focal plane array with a 15?m pitch. The detectors were interconnected by indium bumps to the CMOS readout circuit. The design of these interconnections has been adapted from the standard CEA-LETI process to achieve resolution and uniformity required by the reduced pitch: the indium bumps scale 12µm width and 7µm height. Because of the important mechanical constraints induced by the size of the component, specific developments were necessary in order to achieve the hybridization process with an extremely reduced amount of defaults. The readout circuit was designed in a 3.3V /0.35?m CMOS technology. Its main features were to allow the validation of the hybridization and technological processes. A Megapixel IRCMOS has been mounted in a dewar and fully characterized at 77K exhibiting excellent electro-optical performances and an operability greater than 99.8%.

Castelein, Pierre; Marion, Francois; Martin, Jean-Luc; Baylet, Jacques; Moussy, Norbert; Gravrand, Olivier; Durand, Alain; Chamonal, Jean-Paul; Destefanis, Gérard

2004-02-01

263

NCI Funded Research Portfolio - 1UM1CA164920-01A1 Detail  

Cancer.gov

Skip to content Your source for National Cancer Institute funded research grants, contract awards, and intramural research projects. More Home Advanced Search Funding Statistics About NFRP Contact Us Related Links Help Viewing Project « Back to results

264

Avaliação emancipatória de um Programa Educativo do Serviço de Controle de Infecção Hospitalar  

Microsoft Academic Search

Objective: To conduct a critical evaluation of an infection control educational program in a Brazilian teaching hospital in order to suggest changes as needed. Methods: This study used action research approach to collect data among 6 nurses working in an Intensive Cardiac Care Unit in a Brazilian teaching hospital in the Sao Paulo State. Paulo Freire's methodology was adopted to

Danielle Fabiana Cucolo; Josimerci Ittavo Lamana Faria; Claudia Bernardi Cesarino

2007-01-01

265

SÓCRATES E O ENSINO DE GRADUAÇÃO EM ADMINISTRAÇÃO DE EMPRESAS: PELA VALORIZAÇÃO DE UM POSICIONAMENTO CRÍTICO  

Microsoft Academic Search

Reflection is made on the role of critical thinking in the teaching of graduate Business Administration. Reference is made to one of history's notable early proponents of critical thinking, Socrates. His ideas about the need of a capability of self-analysis and consequently self- understanding are followed by a questioning about the continuing validity of knowledge possessed or that which may

Amarolinda Zanela Saccol; Luciano Munck

266

Experimental study of biological effect by Nd:YAP laser (1.34um)  

NASA Astrophysics Data System (ADS)

Objective: To evaluate the biological effect of different power, irradiation time of Nd: YAP laser (1341nm). Method: The canine skin, bronchia, stomach, bladder, uterus were irradiated with different irradiation power and time. The effect was observed by naked eyes, light microscope, and electric microscope. Result: Having positive correlation with power and irradiating time, the biological effect of Nd: YAP laser is mainly thermal coagulation effect with some gasified ablation effect. Under the condition where the diameter of faculae irradiating on canine skin was 3 mm, the thermal coagulation dose reaching deep derma was 5W 4s, 10w 1s?the thermal coagulation dose puncturing the whole layer was 5W, 6s, 10W, 4s; the thermal coagulation dose reaching whole stratum was 10W 5s, 20W 4s, 30W 2s, 40-60W 1s on stomach (Thickness 6mm), was 40W, 2s, 30W, 3s, 20W, 4s, 10W, 6s on bladder (Thickness 6mm ,irradiation underwater), was 10W, 4s on bronchia (Thickness 2 mm) and was 30W 3s, 20W 5s, 10W 6s on uterus (Thickness 6mm). Conclusion: Having positive correlation with power and irradiating time, the biological effect of Nd: YAP laser is mainly thermal coagulation effect with some gasified ablation effect. Under the condition where the diameter of faculae irradiating on canine skin was 3 mm, it is safe when the dose is 5W, and the irradiating time is less than 4s; the dose is 10W, and the irradiating time is less than 1 s. Under these conditions, the gastric area is used to coagulating and ablating. It is safe when the dose is less than 10W 5s, 20W 4s, 30W 2s. Under these condition, The bladder (thickness 6mm) is coagulated and ablated. It is safe when the dose is no more than 40W, 1s, 30W, 2s, 20W, 3s, 10W, 5s.Under the condition where bronchia (thickness 2mm) is coagulated and ablated, it is safe when the dose is less than 10W, 3s.Under the condition where uterus (thickness 6mm) is coagulated and ablated, it is safe when the dose is less than 30W, 2s, 20W, 4s, 10W, 5s.

Zhu, Jing; Zhang, Hui-Guo; Lu, Liping

2005-07-01

267

Current measurements in plasma produced by the train of 10.6-um subnanosecond laser pulses  

NASA Astrophysics Data System (ADS)

Results of current probe measurements for a plasma produced by the train of approximately 200 ps 10.6 micrometers laser pulses are reported. The train of pulses was obtained as a result of regenerative amplification of approximately 100 ps laser pulse in a 5 cm aperture 6 atm TE-CO2 laser. Experiments were carried out for Wo and Al targets dispersed in vacuum, two values of the interpulses separation in the train (Delta) T equals 9.3 and 29 ns and wide range of energy density on the target, corresponding to peak intensities of single pulses Ip equals 1 divided by 300 GW/cm2. Experiments had shown large difference of temporal structure of current signal with Wo and Al targets due to the considerable different in melting temperatures of these materials as well as radiation loses of laser plasma. We detected large ratio of current signal amplitudes for targets irradiation by the pulse train or gain switched pulse generated in TE-CO2 laser without injection of a short pulse. Results of these measurements are compared with those earlier obtained for nanosecond pulse train.

Apollonov, Victor V.; Kazakov, K. K.; Pletnyev, N. V.; Sorochenko, Vladimir R.

2000-01-01

268

Efeitos genéticos e de ambiente em um rebanho do ecótipo Mantiqueira: I. Características reprodutivas  

Microsoft Academic Search

The reproductive performance of Mantiqueira cows were analyzed using data of records of age of first calving (IPP), calving interval (IDP) and days open (PSERV). These data were the first five lactations of 1406 cows of Mantiqueira ecotype consisting of daughters of 113 sires, with calving from 1952 to 1997, from the Paraiba Valley Regional Center of Research in São

Marcos Vinicius Gualberto Barbosa Silva; Jaime Araújo Cobuci; William José Ferreira; Paulo Rogério Palma de Oliveira; Marco Antônio Machado; Cezar Parreira Ferreira

2006-01-01

269

jXChat - Um Sistema de Comunicação Eletrônica Inteligente para apoio a Educação a Distância  

Microsoft Academic Search

Synchronous communication tools are possible options for communication in distance learning environment. However, management of student's discussion and participation in these k ind o f t ool i s a ha rd task from the teacher point of view. This work proposes a model of a electronic communication system. Actually the system is a synchronous communication tool, usually called chat,

Francisco José Martins; Débora Nice Ferrari; Cláudio F. R. Geyer

270

O olhar da equipe e usuários de um hospital geral sobre a necessidade de intervenção psicológica  

Microsoft Academic Search

The intervention of the psychology professional in the hospital context is becoming more and more necessary and common. In view of this, the present article is a research report that was carried out in a public hospital in Santa Maria city in the Rio Grande do Sul state. It aims to analyses the expectations of the health staff and users

Jossiele Fighera; Eliani Venturini Viero

271

Navy of Brazil: An Emerging Power at Sea (Marinha do Brasil: Um Poder Emergente no Mar).  

National Technical Information Service (NTIS)

Captain Ferreira provides a perspective not available from one of our United States Fellows. Many observers foresee an increasingly influential place for Brazil in international affairs. Is the Brazilian Navy prepared to take on an expanded international ...

D. P. C. B. Ferreira

1983-01-01

272

Precipitation of inner zone electrons by whistler mode waves from the VLF transmitters UMS and NWC  

Microsoft Academic Search

The precipitation of energetic electrons which are commonly observed in the drift loss cone east of 60° east longitude between Lapprox.1.6 and Lapprox.1.8 can be accounted for by a Doppler-shifted cyclotron resonance between the electrons and nonducted whistler mode waves from high-power, ground-based VLF transmitters. A ray-tracing analysis using a diffusive-equilibrium model shows that 17.1-kHz waves starting with vertical wave

H. C. Koons; B. C. Edgar; A. L. Vampola

1981-01-01

273

Pulpal safety of a 9.6-um TEA CO2 laser used for caries prevention  

NASA Astrophysics Data System (ADS)

Lasers are used for several procedures involving hard and soft tissues of the oral cavity. Included in those procedures is the use of the CO2 laser to alter the surface structure of tooth enamel to render it more resistant to caries. A new 9.6micrometers wavelength TEA CO2 laser (Argu Photonics, Jpiter, FL) has been investigated as a device that can be used for this procedure without harming the dental pulp. Erupted, caries and restoration free third molars (n=24) were used in the experiment. Teeth were irradiated at an incident fluence of 1.5J/cm2 and a repetition rate of 10Hz and a spot size 1mm in diameter. At the low and high settings, 200 to 400 pulses were delivered at 12mJ per pulse for a total energy of 2.4 or 4.8J delivered for 20 or 40 seconds respectively. Other teeth were subjected to a sham dental procedure (positive control) or no procedure (negative control). Prior to testing, radiographs were taken of all teeth, and they were tested pulpally using heat, cold and electricity to determine vitality. The teeth were removed either immediately or at one week or one month after testing. They were bioprepared and examined histologically for signs of inflammation. Only one tooth developed symptoms of sensitivity to cold for 10 days following exposure to the high power level. The sensitivity was of fleeting duration and was judged to be reversible pulpitis. All teeth tested responded normally at pretesting and pre-extraction time periods. Histological examination disclosed no indication of an inflammatory response in the pulp tissue. All sections appeared normal with no changes seen in the normal pulpal morphology. We conclude that the 9.6 micrometers wavelength laser causes no pulpal damage at the energy levels used and can be used safely for caries prevention treatments.

Goodis, Harold E.; Fried, Daniel; Featherstone, John D.

2002-06-01

274

Perfil e Padrões de Prática dos Fisioterapeutas no Futebol em Portugal - um Estudo Observacional  

Microsoft Academic Search

Introduction \\/ Relevance: Sports Physiotherapy is the area of physiotherapy involved in prevention, treatment and rehabilitation of disorders and \\/ or injuries resulting from sport and \\/ or physical activity, that involves models and standards of good practices that ensure the quality of the intervention. Objectives: The purpose of this study was to identify and characterize the profile and practice

Duarte Pereira

275

Indicadores e Dilemas na Abordagem do Cooperativismo: Um Estudo Exploratório em  

Microsoft Academic Search

This article presents an interpretation about one q ualitative and quantitative investigation (of exploratory type) on indicators and dilemmas in the cooperativism, focusing in special the situation of the organizations affiliated with the Organization of the Co-operatives of State of Santa Catarina (OCESC). A bibliographical search on specialized literature was made in Annals of the EnANPADs from 2003 to 2006.

276

Process control for 0.25 um GaAs microwave monolithic integrated circuits  

NASA Astrophysics Data System (ADS)

Gallium arsenide metal semiconductor field effect transistors (GaAs MESFETs) are used in analog microwave monolithic integrated circuits (MMICs) because of their high frequency response. Common applications for MMICs include low noise and power amplifiers for use in satellite communication and missile guidance systems. The performance of MESFETs is improved with smaller gate lengths, but to consistently achieve the highest performance, control methods must be in place for the critical processes. Gate length control is the key parameter in maintaining the rf performance and a lack of gate pinch off is the major yield loss category. This paper describes the process and the tools that Texas Instruments uses to monitor the critical parameters. It also describes the control methods and reviews the major contributors to variations in the process.

Hudgens, Rick D.; Meyers, Shirley; Small, Bret A.; Salzman, Keith; Rhine, David; Class, Randy

1994-05-01

277

Zwischen Naturwissenschaft und Symbolik: Zum Spezifischen der Syphilisdarstellung in der Literatur um 1900  

Microsoft Academic Search

\\u000a Abstract.  The particular significance of syphilis as a literary theme at the turn of the 20th century is attributable to a combination\\u000a of scientific developments and social conditions which include the germ theory, the idea of biological inheritance, the bourgeois\\u000a fear of degeneration and the newly emerging discipline of public health. Symptoms that ranged from physical disfigurement\\u000a to neuropsychiatric manifestations, which

Hendrik Voss

2006-01-01

278

Sobre a quantizacao de um sistema classicamente caotico. (Quantization of classically chaotic system).  

National Technical Information Service (NTIS)

Some propeties of a quantization in terms of observables of a classically chaotic system, which exhibits a strange are studied. It is shown in particular that convenient expected values of some observables have the correct classical limit and that in thes...

N. F. Godoy

1988-01-01

279

A prescrição médica eletrônica em um hospital universitário: falhas de redação e opiniões de usuários  

Microsoft Academic Search

This study analyzed the writing failure of the computerized physician order entry system and its advantages and disadvantages according to users. At a university hospital 1,351 physician orders were analyzed and 84 nursing and medical professionals were interviewed. The results showed that 17.7% of the orders presented erasures, medication had been suspended in 16.8%, in 28.2% there was dubious or

Helena De; Bortoli Cassiani; Cláudia Câmara Freire; Fernanda Raphael; Escobar Gimenes

280

Business Intelligence no Suporte a Decisões sobre Comunicações: Descrição de um Caso  

Microsoft Academic Search

This project addresses decisions of investment on communication infrastructures in Electricidade dos Açores (EDA), the local Electric Company in the Azores Islands. The main decision was that EDA communications should be moving to Voice over IP (VoIP) from present telephone lines, outsourced to an external communications company. At the beginning, a business intelligence project was set, with the objective of

Armando B. Mendes; Paulo Jorge Alfaro; Aires Ferreira

2008-01-01

281

DESENVOLVIMENTO DE UM AÇO INOXIDÁVEL ENDURECÍVEL POR PRECIPITAÇÃO PARA MOLDES DE PLÁSTICO  

Microsoft Academic Search

The thermoplastic productive chain, usually known as plastics, have experimented intense growth. In the manufacture of goods, the use of dies and tools is essential to obtain the desired quality and productivity. The present work reports the development of a new steel for dies, called VP80, specifically to applications in processes which must bear high corrosive conditions. Plastics such as

Rafael Agnelli Mesquita; Celso Antonio Barbosa

282

Isolation of UmRrm75, a gene involved in dimorphism and virulence of Ustilago maydis  

Technology Transfer Automated Retrieval System (TEKTRAN)

Ustilago maydis displays dimorphic growth, alternating between a saprophytic haploid yeast form and a filamentous dikaryon, generated by mating of haploid cells and which is an obligate parasite. Induction of the dimorphic transition of haploid strains in vitro by change in ambient pH has been used...

283

Notas Sobre um País em Transe: Mídia e Copa do Mundo no Brasil  

Microsoft Academic Search

This paper presents some issues concerning the relation between football and culture in Brazil, since an ethnographic experience that took place during the World Cup of 1998. I analyse advertising and sports journalism discourses during the World Cup, taking into consideration the media dimension of football. Thus, I think that along with the clear participation of football on Brazilian contemporary

Édison Luis Gastaldo

284

Infixation and segmental constraint effects: UM and IN in Tagalog, Chamorro, and Toba Batak  

Microsoft Academic Search

The proper understanding of infixation continues to be a matter of debate among linguists. The data presented in this paper show that infixation in Austronesian languages is not exclusively due to Prosodic Morphology, but instead is significantly influenced by the segmental phonology as well. Specifically, infixation may be blocked if it would create dissimilation environments in the first bimoraic foot

Thomas B. Klein

2005-01-01

285

O efeito da periodização em um atleta do voleibol na areia - 1999 a 2008  

Microsoft Academic Search

The objective of the study was of determines the effect of the model of periodization in anthropometric test and physical test of the beach volleyball player during 1999 to 2008. Beach volleyball player practiced some model of periodization. One way Anova of repeated measures was significant in some tests, but Bonferroni determined the best result of the abdominal test of

Nelson Kautzner; Marques Junior

286

ATIVIDADE INOVATIVA NAS EMPRESAS PAULISTAS: UM ESTUDO A PARTIR DA PAEP-2001  

Microsoft Academic Search

This paper intends to study the relationship between inputs and outcomes from the technologic innovation. The industrial firms which had innovated in product were the object of this study, by using the Sao Paulo Economic Activity Research from 1999 to 2001 (PAEP-2001). Besides the distinction from the innovative enterprises, which innovated only to the firm and the others that innovated

Beatriz Selan; Sérgio Kannebley Júnior

2006-01-01

287

High-power 2-um diode-pumped Tm:YAG laser  

NASA Astrophysics Data System (ADS)

Using a scalable diode end-pumping technology developed at Lawrence Livermore National Laboratory we have demonstrated a compact Tm:YAG laser capable of generating greater than 50 W of cw 2 micrometer laser output power. The design and operational characteristics of this laser, which was built originally for use in assessing laser surgical techniques, are discussed. The 2 micrometer radiation produced by the 3F4 - 3H6 transition of Tm3+ has many practical applications because it is strongly absorbed by water and also because it is an 'eye-safe' wavelength. The strong absorption of 2 micrometer radiation by water makes this transition a very attractive candidate for performing laser surgical procedures as most tissue types are predominately composed of liquid water. The fact that 2 micrometer radiation is considered 'eye-safe' makes this transition attractive for laser range finding and remote sensing applications where other laser wavelengths could pose a safety hazard. At sufficiently high doping densities, Tm3+ exhibits a beneficial two-for-one quantum pump efficiency enabling well developed AlGaAs laser diode arrays to be used as efficient excitation sources. Many applications requiring 2 micrometer laser radiation such as remote sensing, laser radar, anti sensor, sensor spoofing, and OPO pumping have driven the development of diode pumped all solid state TM3+ laser systems because of their potential for efficiency, compactness, and ruggedness. Here we focus on Tm3+:YAG and the scalable diode end-pumping technology developed at LLNL which enables higher average power operation of diode pumped Tm3+ laser systems than has previously been possible. To date we have demonstrated cw operation of this laser to power levels of 51 W. The end-pumping technology used is the same as was previously used to demonstrate a 100 mJ Q-switched Nd:YLF laser. (Truncated.)

Beach, Raymond J.; Sutton, Steven B.; Honea, E. C.; Skidmore, Jay A.; Emanuel, Mark A.

1996-03-01

288

UM NOVO MODELO MATEM´ ATICO PARA OTIMIZAC ¸ ˜ AO DA CONFIABILIDADE EM ALIMENTADORES  

Microsoft Academic Search

An eletric utility must install protection and sectionaliz ing devices in key points of its distribution network to serve its customers with a relia ble power supply. Utility boards or similar commissions define measures (reliability indices) to quantify, analize, and regulate the eletric utility services. This work presents a nonlinear bi nary programming optimization mo- del that generalizes the already

Debora Z. Bossois; Eduardo Zambon; Berilhes B. Garcia; Elias F. Azeredo

289

Compact infrared zoom lens for the 3- to 5-um spectral band  

Microsoft Academic Search

The results of a comprehensive design study for the development of a compact infrared zoom lens suitable for use in guided munitions are discussed. The continuously variable zoom of the lens offers significant operational performance benefits to weapon systems using fixed or switchable FOV optics. Two practical zoom lens systems were designed that showed potential to meet typical guided munitions

R. Barry Johnson; Allen Mann; Patrick J. Reardon; Bruce R. Peters

1996-01-01

290

A QCIF Resolution Binary I\\/O CNN-UM Chip  

Microsoft Academic Search

In this paper is reported a Cellular Nonlinear Network Universal Machine realization where there are 176 × 144 active cells. The size of the network is the standardized QCIF video image format and the design is aimed to be used in segmenting video images in future video applications requiring very low bit-rate for image transmission. The achieved cell density is

Ari Paasio; Asko Kananen; Kari Halonen; Veikko Porra

1999-01-01

291

Infrared 8- to 15-um high-efficiency antireflection coating on germanium substrate  

NASA Astrophysics Data System (ADS)

To increase the strength of infrared high efficiency antireflection coatings is a problem difficult to be resolved. A mixture of BaF2 and CeF2 has been used as a low refractive index material to design and prepare infrared 8 - 11.5 (mu) high efficiency anti-reflection coating to acquire good strength of film layer. The processing conditions of the films deposition have also been introduced. The spectral transmittance measured, physical and chemical properties of the infrared anti-reflection coating are given.

Ye, Ke-Fei; Su, Zhaoxu; Liu, Jiahuan; Yang, Chongming

1998-08-01

292

Um modelo de suporte à avaliação formativa para ambientes de EaD  

Microsoft Academic Search

This technical report presents a Formative Assessment Support Model for Learning Management Systems. This model is based on Hadji' (2001) recommendations to a more formative assessment. The proposed model aims to support the mapping of these recommendations to the distance education domain, considering the formative assessment of collaborative and constructionist learning activities. The model explores computational technologies to provide a

Joice Lee Otsuka; Heloísa Vieira da Rocha

2001-01-01

293

High-reliability nonhermetic 1.3-um InP-based uncooled lasers  

NASA Astrophysics Data System (ADS)

We report the first uncooled non-hermetic 1.3 micrometer InP-based communication lasers that have reliability comparable to their hermetically packaged counterparts for possible applications in fiber in the loop and cable TV. The development of reliable non-hermetic semiconductor lasers would not only lead to the elimination of the costs specifically associated with hermetic packaging but also lead the way for possible revolutionary low cost optoelectronic packaging technologies. We have used Fabry-Perot capped mesa buried heterostructure (CMBH) uncooled lasers with both bulk and MQW active regions grown on n- type InP substrates by VPE and MOCVD. We find that the proper dielectric facet passivation is the key to obtain high reliability in a non-hermetic environment. The passivation protects the laser from the ambient and maintains the proper facet reflectivity to achieve desired laser characteristics. The SiO facet passivation formed by molecular beam deposition (MBD) has resulted in lasers with lifetime well in excess of the reliability goal of 3,000 hours operation at 85 degrees Celsius/90% RH/30 mA aging condition. Based on extrapolations derived experimentally, we calculate a 15 year average device hazard rate of less than 300 FITs (as against the desired 1,500 FITs) for the combination of thermal and humidity induced degradation at an ambient condition of 45 degrees Celsius/50% RH. For comparison, the average hazard rate at 45 degrees Celsius and 15 years of service is approximately 250 FITs for hermetic lasers of similar construction. A comparison of the thermal only degradation (hermetic) to the thermal plus humidity induced degradation (non-hermetic) indicates that the reliability of these nonhermetic lasers is controlled by thermal degradation only and not by moisture-induced degradation. In addition to device passivation for a non-hermetic environment, MBD-SiO maintains the optical, electrical and mechanical properties needed for high-performance laser systems.

Chand, Naresh; Osenbach, J. W.; Evanosky, T. L.; Comizzoli, Robert B.; Tsang, Won-Tien

1996-01-01

294

5GHz Oscillator Array With Reduced Flicker UpConversion in 0.13um CMOS  

Microsoft Academic Search

Voltage supply scaling in CMOS processes requires lower inductance and higher capacitance in conventional LC oscillators. Forcing several LC oscillators to run in phase is a valuable means of achieving the wanted phase noise with practical values of inductances and capacitances. However, in-phase oscillator arrays suffer from the up-conversion of transistors' flicker noise, in the presence of oscillator mismatches. A

Luca Romanò; Andrea Bonfanti; Salvatore Levantino; Carlo Samori; Andrea L. Lacaita

2006-01-01

295

Qualidade de vida e saúde: um debate necessário Quality of life and health: a necessary debate  

Microsoft Academic Search

This paper discusses the relationships between quality of life and health by applying the discourses emerging in the health sector to other fields and other disciplines. These rela- tionships constitute social representation based on subjective parameters (well-being, happi- ness, love, pleasure, personal satisfaction), and on objective ones such as satisfaction of basic needs and of the needs created by the

Maria Cecília de Souza Minayo; Zulmira Maria de Araújo Hartz; Paulo Marchiori Buss

296

Development of extended red (1.0- to 1.3-um) image intensifiers  

NASA Astrophysics Data System (ADS)

We present the development of extended near infrared based image intensifiers with InGaAs semiconductor and multi-alkali based photocathodes having 1.0-1.3 micrometers and 1.0-1.1 micrometers spectral sensitivities, respectively. For the InGaAs based image intensifiers, we study their material characteristics using transmission, photoluminescence, micro-Raman, and scanning Auger spectroscopies. Direct spectral comparison of the InGaAs image intensifiers are made to standard Generation II and III image intensifiers. Then we study the sealed NEA InGaAs image tube performance parameters such as spectral sensitivity, whitelight photoresponse, equivalent background illumination, signal-to-noise, modulation transfer function, and optical system-image intensifier field performance data. For the multi-alkali based image intensifiers, we present a direct spectral comparison of it to our NEA InGaAs and standard super Gen II image tubes. Finally, we examine the advancement of our near infrared devices into the 1.5-2.0 micrometers spectral regime.

Estrera, Joseph P.; Sinor, Timothy W.; Passmore, Keith T.; Rector, M. K.

1995-09-01

297

DRIBLANDO O SISTEMA: UM PANORAMA DO DISCURSO DAS ARTES VISUAIS BRASILEIRAS DURANTE A DITADURA1  

Microsoft Academic Search

The paper places in perspective the mechanisms of production of the Brazilian visual arts and the political situation of repression lived in the country under dictatorship. The paper studies the relevance, forms of confrontation and production of a parcel of the Brazilian visual artists who had continued producing or had theirs actions influenced by national political situation of extreme repression

Felipe Scovino

298

1.06-um laser irradiation on high-reflection coatings inside a scanning electron microscope  

Microsoft Academic Search

The output fluence of a high peak power laser like the French laser project 'Laser Megajoule' is strongly related to the damage threshold of mirrors and polarizers consisting of multilayer dielectric coatings. It has been recognized for a long time that growth defects as nodules are playing a significant role in 1.06 micrometers laser damage of these components. In order

M. Poulingue; Jean Dijon; Pierre Garrec; Philippe Lyan

1999-01-01

299

1.06-um laser irradiation on high-reflection coatings inside a scanning electron microscope  

NASA Astrophysics Data System (ADS)

The output fluence of a high peak power laser like the French laser project 'Laser Megajoule' is strongly related to the damage threshold of mirrors and polarizers consisting of multilayer dielectric coatings. It has been recognized for a long time that growth defects as nodules are playing a significant role in 1.06 micrometers laser damage of these components. In order to determine the critical parameters of the nodule and the associated mechanisms during the laser damage process, we have performed laser irradiation of samples inside the vacuum chamber of a scanning electron microscope (SEM). The SEM allows us to choose a particular area of the sample and to observe it before and after irradiation at a micro size scale. The damage evolution ca be analyzed shot by shot. In this paper, the experimental method is described. SEM pictures of irradiated laser shots are showed. Data about damage mechanisms are derived from these very high resolution morphological observations.

Poulingue, M.; Dijon, Jean; Garrec, Pierre; Lyan, Philippe

1999-04-01

300

Improved design and prototyping for a 10/20-um camera/spectrometer for ESO's VLT  

NASA Astrophysics Data System (ADS)

The Cassegrain focus of the 2nd unit telescope of ESO's VLT shall be equipped with a 10/20 micrometers camera spectrometer. This instrument shall be built by a consortium of institutes from ESO's member-states responsible for the final design. Still rather detailed internal studies were required to assess the overall scope of work, the repercussions on the telescope design and the required infrastructure at ESO. The internal studies have resulted in a multimode instrument allowing for diffraction limited imaging with variable magnification at 10/20 micrometers , low-, medium- plus potentially high-resolution long slit spectroscopy (approaching or exceeding (lambda) divided by (Delta) (lambda) approximately equals 50000). The optical design allows to take advantage of the rapid evolution in the field of detectors. Novel design features are an exchangeable entrance window, an anamorphic beam expansion and potentially the use of immersion gratings. At the La Silla observatory TIMMI, a small 10 micrometers camera/spectrometer for the 3.6 m telescope (built by the Service d'Astrophysique, CEN- Saclay, France) is in operation to allow both ESO and its community to gain practical experience in astronomy in the 10 micrometers atmospheric window. This instrument is currently equipped with a 64x64 element Ga:Si array. A 128x196 element array is presently in development at Leti/LIR of Grenoble, France, which may be used to upgrade ESO's current observing capabilities. Spectroscopy in TIMMI utilizes Germanium grisms machined via anisotropic etching. This manufacturing technology may also serve to fabricate immersion gratings from high index materials.

Kaeufl, Hans U.; Delabre, Bernard

1994-06-01

301

Um modelo do sistema termorregulador do corpo humano: exposição a ambientes quentes  

Microsoft Academic Search

A transient mathematical model for the human heat transfer system has been developed. It is based on a single cylinder, representing the body, with four concentric annular layers: core, muscle, fat and skin. It includes metabolic heat generation, conduction of heat in tissue, convection of heat by flowing blood, heat transfer by radiation, convection and evaporation at the surface and

M. S. Ferreira; J. I. Yanagihara

302

Draft Genome Sequence of Dematiaceous Coelomycete Pyrenochaeta sp. Strain UM 256, Isolated from Skin Scraping  

PubMed Central

Pyrenochaeta, classified under the order Pleosporales, is known to cause diseases in plants and humans. Here, we report a draft genome sequence of a Pyrenochaeta sp. isolated from a skin scraping, with an estimated genome size of 39.4 Mb. Genes associated with the synthesis of proteases, toxins, plant cell wall degradation, and multidrug resistance were found.

Yew, Su Mei; Chan, Chai Ling; Soo-Hoo, Tuck Soon; Na, Shiang Ling; Ong, Seong Siang; Hassan, Hamimah; Ngeow, Yun Fong; Hoh, Chee Choong; Lee, Kok Wei; Yee, Wai Yan

2013-01-01

303

NCI Funded Research Portfolio - 1UM1CA164974-01A1 Detail  

Cancer.gov

Skip to content Your source for National Cancer Institute funded research grants, contract awards, and intramural research projects. More Home Advanced Search Funding Statistics About NFRP Contact Us Related Links Help Viewing Project « Back to results

304

12 PASSOS PARA IMPLEMENTAÇÃO DE UM MODELO DE GESTÃO ESTRATÉGICA DO CONHECIMENTO EM UMA EMPRESA INDUSTRIAL  

Microsoft Academic Search

In the last years, as a result of the economy globalization, the companies were forced to get better or to change the way of administering in order to keep competitive advantage. In this scene, intangible assets such as organizational learning and knowledge creation appeared or emerged as the main factors defining the organization's competitivity structured under the concept of Intellectual

Carlos Augusto de Sous; Luiz Martello de Souza; Marcos Damião de Azevedo

305

Long-wavelength optical coherence tomography at 1.7 um for enhanced imaging depth  

PubMed Central

Multiple scattering in a sample presents a significant limitation to achieve meaningful structural information at deeper penetration depths in optical coherence tomography (OCT). Previous studies suggest that the spectral region around 1.7 µm may exhibit reduced scattering coefficients in biological tissues compared to the widely used wavelengths around 1.3 µm. To investigate this long-wavelength region, we developed a wavelength-swept laser at 1.7 µm wavelength and conducted OCT or optical frequency domain imaging (OFDI) for the first time in this spectral range. The constructed laser is capable of providing a wide tuning range from 1.59 to 1.75 µm over 160 nm. When the laser was operated with a reduced tuning range over 95 nm at a repetition rate of 10.9 kHz and an average output power of 12.3 mW, the OFDI imaging system exhibited a sensitivity of about 100 dB and axial and lateral resolution of 24 µm and 14 µm, respectively. We imaged several phantom and biological samples using 1.3 µm and 1.7 µm OFDI systems and found that the depth-dependent signal decay rate is substantially lower at 1.7 µm wavelength in most, if not all samples. Our results suggest that this imaging window may offer an advantage over shorter wavelengths by increasing the penetration depths as well as enhancing image contrast at deeper penetration depths where otherwise multiple scattered photons dominate over ballistic photons.

Sharma, Utkarsh; Chang, Ernest W.; Yun, Seok H.

2009-01-01

306

OPC technology road map to 0.14-um design rules  

Microsoft Academic Search

We devised an OPC technology roadmap (Table 1) embodied in a corresponding test reticle (code named RTP4) as a benchmark for the reticle manufacturing industry. This reticle includes the polysilicon gate layer of four large ASIC-style microprocessor chips, representing four design rule generations: 0.25 micrometer, 0.20 micrometer, 0.18 micrometer, and 0.14 micrometer. In this report we summarize the challenges experienced

J. F. Chen; Tom Laidig; Kurt E. Wampler; Roger F. Caldwell; Alex R. Naderi; Douglas van de Brooke

1997-01-01

307

Laser radar using a 1.55-um passively Q-switched microchip laser  

NASA Astrophysics Data System (ADS)

We investigate a laser range finder for obstacle detection in automotive field. This device is based on the use of an eye-safe pulsed microchip laser, emitting near 1.55 micrometer. The technology of solid-state microchip lasers is a good way to obtain a compact, reliable and low cost laser source. Passively Q-switched microchip lasers are of great interest for time of flight range finding: short pulse duration and high peak power have been obtained. A short pulse duration gives good precision and high peak power gives a long range of detection. The distance measurement is obtained with an ASIC chronometer which implements the time-of- flight technique. We also developed reception circuit for start and stop signals and data input/output. The ASIC chronometer is based on two complementary techniques: a clock counter for coarse measurement and multiple slopes generator for fine measurement.

Thony, Philippe; Fulbert, Laurent; Besesty, Pascal; Ferrand, Bernard

1999-05-01

308

EFEITO DE UM PROGRAMA DE HIDROTERAPIA NA FLEXIBILIDADE E NA FORÇA MUSCULAR DE IDOSAS  

Microsoft Academic Search

Effect of a hydrotherapy program on flexibility and muscle strength in elderly women Objective: To evaluate the effect of a hydrotherapy program on flexibility and muscle strength among sedentary elderly women. Method: The participants were 31 healthy sedentary elderly women aged between 65 and 70 years (16 in the experimental group and 15 in the control group). Muscle strength tests

CANDELORO JM E CAROMANO; Monteiro Candeloro

2007-01-01

309

ColonizaÁªo e biologia reprodutiva de mamangavas (Xylocopa frontalis) em um modelo de ninho racional  

Microsoft Academic Search

Carpenter bees (Xylocopa spp.) are important pollinators, but rearing them for introduction in agricultural areas has been difficult because of their nesting behavior. Models of rational nesting boxes, which allow observing their interior, manipulating the nests and transporting them to the orchards, have not been accepted by the bees. The present work tested colonization and reproductive biology of carpenter bees

Hugo de Oliveira Filho; Breno Magalh

310

Zum Auf und Ab des Meeresspiegels in Skandinavien: Langer Streit um Eustasie oder Isostasie  

NASA Astrophysics Data System (ADS)

The phenomenon of the rise of the Scandinavian shield during the Holocene and the concomitant fall in level of the Baltic Sea has been investigated for centuries. Already in medieval times, there were reports about the coastlines of the Gulf of Bothnia that are full of relevant observations. During the eighteenth century, scientists such as Celsius and Linnaeus collected observations such as these. The result was that the search for the possible explanations of this rise-and-fall phenomenon intensified. The generally favoured explanation was that there was an active sinking of sea level in the Baltic rather than an active rising of the land surface in Fennoscandia. This was because water was seen as mobile, in contrast to a „terra firma". The relevant discussion was often emotional, and here, we try to illustrate it using material from the Geologenarchiv Freiburg (von Hoff, von Buch and Goethe). No more than a few decades later, it became obvious by the theory of Ice Age that both the sea level and the land could be mobile (eustatic sea level changes—glacial isostasy). Additionally, of course, plate tectonics had some influence: Norway is situated at the western end of the Eurasian plate and is part of a passive continental margin. There are still open research problems, many of which can be addressed using modern methods of satellite-based geophysics and geodesy. Some other aspects as the permanent uplift trend of Scandinavia since the Cambrium or the rhythmic to and fro of magma in the upper mantle during the Pleistocene are mentioned.

Seibold, Eugen; Seibold, Ilse

2012-03-01

311

Leishmaniose visceral em um canino de Cruz Alta, Rio Grande do Sul, Brasil  

Microsoft Academic Search

A case of visceral leishmaniasis in a five-year-old, intact male Akita presented to the Veterinary Hospital at the University of Cruz Alta, RS, Brazil after having lived in the state of Alagoas for three years is described. Clinical signs included progressive weight loss, crusty lesions on the tip of the ears, nose and periorbital region, an ulcer at the distal

Cristina Krauspenhar; Cristiane Beck; Vitor Sperotto; Aline Alves da Silva; Rodrigo Bastos; Lauro Rodrigues

2007-01-01

312

High-performance 1.3-um laser diode by LP-MOVPE  

NASA Astrophysics Data System (ADS)

The progress in 1.3 micrometers wavelength InGaAsP/InP lasers for optic fiber communication and subscriber loop applications is reviewed. By using LP-MOVPE/LPE epitaxy techniques, the performance of commercial optical devices is considerably improved. The bandwidth of the 1.3 micrometers uncooled MQW-LD module could be high to 1.6GHz, threshold current Ith < 15mA, maximum fiber output power Pf >= 20mW while uniformity, reproducible, high yield are achieved. Further by growing active layer with compressive strained structure the lowest threshold current Ith equals 3.8mA was achieved with high reflection coating and the temperature performance of the SL-MQW-LD has been greatly improved, the change of slop efficiency at 25 degrees C and 85 degrees C is less than 1 dB. Using the holographic technique a high power 1.31 micrometers InGaAsP/InP multiquantum well distributed feedback laser has also been developed. The fiber output power of butterfly packaged module with optic isolator Pf > 10mW, threshold current Ith < 18mA, slop efficiency Es > 22 percent and side mode suppression ratio SMSR > 40dB. The composite triple beat CTB < -66dBc and the composite second order CSO < -56dBc by test frequencies equals 55.25 to approximately 289.25MHz with 40 NCTA channels, the carrier to noise ration CNR > 50 dB and the relative intensity noise RIN < -160dB/Hz.

Li, Tong-Ning; Ji, Jin-Yan; Yan, Xin-Min; Liu, Tao; Ning, Zhou; Liu, Jiang; Liu, Zi-Li; Huang, Ge-Fan

1996-09-01

313

Highly Efficient Tabletop Optical Parametric Chirped Pulse Amplifier at 1 um(micro sign).  

National Technical Information Service (NTIS)

Optical parametric chirped pulse amplification (OPCPA) is a scalable technology, for ultrashort pulse amplification. Its major advantages include design simplicity, broad bandwidth, tunability, low B-integral, high contrast, and high beam quality. OPCPA i...

I. Jovanovic C. A. Ebbers B. J. Comaskey R. A. Bonner E. C. Morse

2001-01-01

314

Exploração Sexual Comercial de Crianças e Adolescentes: Um Estudo com Caminhoneiros Brasileiros1  

Microsoft Academic Search

This article aims at understanding the reasons for children and adolescents' commercial sexual exploitation by the perception of brazilian truck drivers, both clients and non clients of this service. Based on a questionnaire, interviews were made with 239 truck drivers in different regions in Brazil. The answers were categorized and analyzed using descriptive statistics (frequency and mean). The main reasons

Normanda Araujo de Morais; Elder Cerqueira-Santos; Andreína da Silva Moura; Marlene Vaz; Sílvia Koller

315

Enhanced amorphous silicon technology for 320 x 240 microbolometer arrays with a pitch of 35 um  

Microsoft Academic Search

LETI LIR has been involved in Amorphous Silicon uncooled microbolometer development for years. This technology is now in production at Sofradir and first delivery have already been done to customers. From our background in modeling and material mastering LETI\\/LIR concentrate now on performance enhancement. This is a key point for cost reduction due to the fact that signal to noise

Eric Mottin; Jean-Luc Martin; Jean-Louis Ouvrier-Buffet; Michel Vilain; Astrid Bain; Jean-Jacques Yon; Jean-Luc Tissot; Jean-Pierre Chatard

2001-01-01

316

Development of a long linear array beyond 12.5 um for earth observation  

Microsoft Academic Search

In the frame of technological preparation for scientific Earth observation, the European Space Agency (ESA) has undertaken a study program for an infrared instrument intended to be implemented on a polar platform type satellite: HRTIR (high resolution thermal infrared radiometer) will be a support for the study of land surface processes by providing reliable information on both temperature and emissivity.

Robert Davancens; Alberto S. Menardi; Louis-Pascal Angebault; Jean-Paul Chamonal

1995-01-01

317

GERAÇÃO DE ELETRICIDADE E QUALIDADE DE VIDA: ANÁLISE DE UM SISTEMA APLICADO  

Microsoft Academic Search

A biomassa é importante insumo para uso energético, porque introduz desenvolvimento local e sustentável, gera energia e com os sub-produtos proporciona renda. Esse ciclo tem como principal resultado alterações positivas na qualidade de vida para as populações envolvidas, o que é particularmente importante nas pequenas comunidades sem atendimento elétrico, sobretudo na Amazônia que têm diversas localidades isoladas dos sistemas convencionais

Artur de Souza Moret; Sinclair Mallet Guy Guerra

2012-01-01

318

Earth's spectral albedo from 0.5 to 4.4 um  

NASA Astrophysics Data System (ADS)

We have analyzed spectroscopic earthshine data to determine Earth's nightly spectral albedos covering the visible, near and middle infrared spectral ranges. Observations in the visible were undertaken from Palomar Observatory with the spectrograph in the Palomar 60" telescope and with the echelle spectrograph of the InfraRed Telescope Facility (IRTF) on Mauna Kea in Hawaii. The observing runs were chosen near the quarter moon to reduce the background glow produced by the moonshine (bright side of the Moon). Although observations were taken on different nights, the similarity of lunar phases and comparable cloud cover conditions for the monitored part of the Earth's surface, allow us to derive, for the first time, an apparent albedo of the Earth covering the entire spectral range from 0.5 to 4.4 microns.

Montanes-Rodrig, P.; Palle, E.; Goode, P. R.; Koonin, S. E.

2005-12-01

319

GNU Mages - Um Ambiente para Simulação de Múltiplos Agentes Autônomos, Cooperativos e Competitivos  

Microsoft Academic Search

We describe the implementation of a cooperative and competitive autonomous multi agents s imulation environment. The main go al of t his application is to p rovide statistical comparisons between d ifferent Artificial Intelligence algorithms applied in games. GNU Mages is free software and we hope to help all community with creation of this new open tool very useful to

João Ricardo Bittencourt; Fernando Osório

320

Um estudo das capacidades e deficiências em habilidades sociais na terceira idade  

Microsoft Academic Search

The purpose of this s tudy is to identify the social situations in which the e lderly people present abilities and difficulties to p lay in a social way. Thirty students of the Third Age Open University were interviewed. From the data analysis, a high p ercentage of positive a nswers in 6 different social situations could b e identified.

Rachel Shimba Carneiro; Eliane Mary de Oliveira Falcone

2004-01-01

321

REDE ISOBUS PARA CONTROLE E COMUNICAÇÃO DE DADOS DE UM ROBÔ AGRÍCOLA MÓVEL  

Microsoft Academic Search

RESUMO: Diante da grande necessidade de se projetar máquinas e implementos agrícolas cada vez mais automatizadas, uma forte tendência atual é o desenvolvimento de robôs móveis e veículos autônomos para área agrícola. Estes robôs e veículos, implementados com as mesmas tecnologias existentes em máquinas agrícolas, desempenham tarefas específicas com grande eficiência, originado ganhos de operação quando comparados a utilização de

EDUARDO PACIÊNCIA GODOY; GIOVANA TRIPOLONI TANGERINO; RAFAEL VIEIRA DE SOUSA; ARTHUR JOSÉ VIEIRA PORTO; RICARDO YASSUSHI INAMASU

322

New semiconductor diode laser emitting at 2 um for microsurgery applications  

Microsoft Academic Search

A surgical laser instrument is presented, based on a semiconductor diode emitting in the spectral region around 2 micrometer, in continuous mode. At this wavelength tissue absorption is via histological water, and the interaction is purely thermal. A portable laser station was built, emitting up to 250 mW of optical power at 1.94 micrometers, out of the tip of a

Pier Giorgio Gobbi; D. Ragazzi; Claudio Azzolini; Giuseppe Trabucchi; Rosario Brancato

1996-01-01

323

Das Ringen um Sinn und Anerkennung – Eine psychodynamische Sicht auf das Phänomen des Neuroenhancement (NE)  

Microsoft Academic Search

Zusammenfassung  Medizinethische Untersuchungen zum Thema Neuroenhancement (NE) wenden sich oft der Frage zu, inwiefern der Einzelne wie auch die Allgemeinheit durch NE zu Schaden kommen können. Gerechtigkeitsprobleme,\\u000a ein befürchteter Wandel des Menschenbildes oder die Gefahr einer unerwünschten, schleichenden Veränderung der Gesellschaft\\u000a werden problematisiert. Bezüglich individueller Risiken bleibt es aufgrund des vermeintlichen Zugewinns an Selbstbestimmung\\u000a und Eigenverantwortung gerne beim Verweis auf die

Marc-Andre Wulf; Ljiljana Joksimovic; Wolfgang Tress

324

Application of RTA to a 0.8-um BiCMOS process  

NASA Astrophysics Data System (ADS)

RTA has been established as a key process element in a sub-micron BiCMOS flow. The major advantage of RTA is that a temperature pulse > 1000 degree(s)C can be used to break-up the interfacial oxide in the polysilicon emitter contact to provide enhanced current gain with low-emitter resistance but with little impact on the CMOS. The RTA emitter anneal also serves to simultaneously flow BPSG to planarize the wafer prior to metallization. Contact reflow is also advantageous for a tapered structure to improve metal step-coverage.

Reuss, Robert H.

1994-02-01

325

Characteristics of GaInNAsSb/GaAs VCSELs operating near 1.55um  

NASA Astrophysics Data System (ADS)

A detailed study of the high-power pulsed operation of C-band optically-pumped GaInNAsSb vertical cavity surface emitting lasers is reported. The devices employ a resonant periodic gain structure grown by molecular beam epitaxy on a GaAs substrate with a 31-pair GaAs/AlAs bottom distributed Bragg reflector and a 4-?, GaAs-based resonant cavity containing 10 GaInNAsSb quantum wells distributed among the 7 antinodes of the electric field. A dual-pump-band SiO2/TiO2 dielectric top mirror allows efficient optical pumping via low reflectivities at 808nm and 1064nm while providing very high reflectivity at the 1.55?m target emission wavelength. The laser characteristics were evaluated using both a Q-switched Nd:YAG 1064nm pump and a 20W-peak 180ns-pulsed 850nm diode laser. The importance of the gain-cavity detuning was evident from time-dependent spectral measurements of laser material subjected to post-growth annealing at different temperatures between 725 and 775°C. The highest annealing temperature produces the largest blue shift of the gain peak relative to the cavity resonance, resulting in the best power transfer characteristics as well as reduced temperature sensitivity.

Gupta, James A.; Calvez, Stephane; Laurand, Nicolas; Weda, Jelmer; Burns, David; Poitras, Daniel; Aers, Geof C.; Dawson, Martin D.

2008-01-01

326

Characteristics of GaInNAsSb\\/GaAs VCSELs operating near 1.55um  

Microsoft Academic Search

A detailed study of the high-power pulsed operation of C-band optically-pumped GaInNAsSb vertical cavity surface emitting lasers is reported. The devices employ a resonant periodic gain structure grown by molecular beam epitaxy on a GaAs substrate with a 31-pair GaAs\\/AlAs bottom distributed Bragg reflector and a 4-lambda, GaAs-based resonant cavity containing 10 GaInNAsSb quantum wells distributed among the 7 antinodes

James A. Gupta; Stephane Calvez; Nicolas Laurand; Jelmer Weda; David Burns; Daniel Poitras; Geof C. Aers; Martin D. Dawson

2008-01-01

327

1.06 um Nd:YAG laser coagulation tonsillectomy: an animal study  

NASA Astrophysics Data System (ADS)

Tonsillectomy is one of the most frequently performed surgeries which is not free from post- operative morbidity. We have developed a non contact photocoagulation technique using 1.06 micrometers Nd:YAG laser and tested its safety and efficacy in an animal model. Eight animals were divided into the laser coagulation group (6 animals) and the laser excision group (2 animals). Tonsils of the laser coagulation animals were irradiated with 8 - 10 W of laser power for 5 - 6 min in a slow painting-like motion over the surface of a tonsil until slight blanching of mucosa was noticed. Tonsils of the laser excision group were resected with 25 - 30 W of 1.06 micrometers Nd:YAG laser power through a contact fiber. The animals were examined endoscopically at 1.5 hrs and at 2, 5, 12, 30, and 42 days post treatment. Atrophic process was followed until total disappearance of tonsillar tissue was observed. The animals were sacrificed at various time intervals and the tonsillar specimens were collected for gross and histological examination. The thermal damage to mucosa and adjacent tissues was minimal which we attribute to a low laser power and cooling from preoperative injection of saline into subcapsular space. The potential advantages of this technique include intact mucosa with no intra- or post-operative bleeding, less pain, and avoidance of general anesthesia. These advantages may enable this surgery to become an in-the-office procedure.

Wang, Zhi; Pankratov, Michail M.; Volk, Mark S.; Perrault, Donald F.; Shapshay, Stanley M.

1995-05-01

328

Pneumonite por amiodarona- -um caso clínico Amiodarone pneumonitis A clinical case report  

Microsoft Academic Search

Amiodarone is an anti-arrhythmic drug that causes many side effects, even when used in low doses (200mg\\/day). The most important non-cardiologic side effect is hyper- sensitivity pneumonitis. We present a clinic case of a man, treated with amioda- rone for one year, who was admitted with a hypersensitivity pneumonitis. The patient was treated with systemic corticosteroids and amiodarone was suspended,

Nuno Germano; Maria do Carmo Catarino; Rogélia Paula Mendonça

2002-01-01

329

TOPIC IDENTIFICATION IN DYNAMICAL TEXT BY EXTRACTING MINIM UM COMPLEXITY TIME COMPONENTS  

Microsoft Academic Search

The problem of analysing dynamically evolving textual data has recently arisen. An example of such data is the discussion ap- pearing in Internet chat lines. In this paper a recently intr oduced source separation method, termed as complexity pursuit, is applied to the problem. The method is a generalisation of projection pur- suit to time series and it is able

Ella Bingham

330

COMPETÊNCIA DOCENTE PARA O USO DAS NOVAS TECNOLOGIAS: ESTRATÉGIA DE UM ESPAÇO VIRTUAL DE APRENDIZAGEM  

Microsoft Academic Search

The present work is the result of a practice accomplished during the Pedagogy Course of the Salesian College of São Paulo showing the relationships between building and using the site of the course and the development of competences in both students and teachers as for the use of virtual learning environments. It is believed that the new technologies, specially the

Maria L. Tarcia

331

Zum Auf und Ab des Meeresspiegels in Skandinavien: Langer Streit um Eustasie oder Isostasie  

Microsoft Academic Search

The phenomenon of the rise of the Scandinavian shield during the Holocene and the concomitant fall in level of the Baltic\\u000a Sea has been investigated for centuries. Already in medieval times, there were reports about the coastlines of the Gulf of\\u000a Bothnia that are full of relevant observations. During the eighteenth century, scientists such as Celsius and Linnaeus collected\\u000a observations

Eugen SeiboldIlse Seibold; Ilse Seibold

2011-01-01

332

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

333

 

PubMed

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

2010-01-01

334

Estudo comparativo entre estrelas centrais de nebulosas planetárias deficientes em hidrogênio  

NASA Astrophysics Data System (ADS)

Apresentamos neste trabalho o resultado de um estudo das principais características espectrais das estrelas centrais de nebulosas planetárias (ECNP) deficientes em hidrogênio. A origem e a evolução dessas estrelas ainda constitui um problema em aberto na evolução estelar. Geralmente esses objetos são divididos em [WCE], [WCL] e [WELS]. Os tipos [WCE] e [WCL] apresentam um espectro típico de uma estrela Wolf-Rayet carbonada de população I e as [WELS] apresentam linhas fracas de carbono e oxigênio em emissão. Existem evidências que apontam a seguinte sequência evolutiva : [WCL] = > [WCE] = > [WELS] = > PG 1159 (pré anã-branca). No entanto, tal cenário apresenta falhas como por exemplo a falta de ECNP entre os tipos [WCL] e [WCE]. Baseados em uma amostra de 24 objetos obtida no telescópio de 1.52m em La Silla, Chile (acordo ESO/ON), ao longo do ano 2000, apresentamos os resultados da comparação das larguras equivalentes de diversas linhas relevantes entre os tipos [WCL], [WCE] e [WELS]. Verificamos que nossos dados estão de acordo com a sequência evolutiva. Baseado nas linhas de C IV, conseguimos dividir pela primeira vez as [WELS] em dois grupos principais. Além disso, os dados reforçam a afirmação de que as [WCE] são as estrelas que possuem a maior temperatura entre as ECNP deficientes em hidrogênio. Discutimos ainda, a escassez de dados disponíveis na literatura e a necessidade da obtenção de parametros físicos para estes objetos.

Marcolino, W. L. F.; de Araújo, F. X.

2003-08-01

335

Captura de satélites durante a formação de Júpiter  

NASA Astrophysics Data System (ADS)

O planeta Jupiter apresenta um grande número de satélites irregulares. As características das órbitas destes objetos indicam que os mesmos não teriam se formado ao redor do planeta que se encontram. As teorias existentes são de que estes objetos teriam se formado em uma região distante do planeta e sua evolução dinâmica os teria levado a uma captura gravitacional pelo planeta. Tendo em vista que o processo de captura gravitacional sem efeitos dissipativos não produz uma captura permanente, estudamos o processo de captura durante o estágio de formação do planeta. Realizamos simulações numéricas para os casos de satélites prógrados e retrógrados que inicialmente se encontram ao redor de Jupiter com sua massa atual e então, evoluimos a integração voltando no tempo de modo que o planeta sofra uma redução em sua massa (de 100% para 10% de sua massa atual) e verificamos o instante em que o satélites escapa do planeta (quando sua energia do problema de dois corpos se torna positiva). Assim, analisando o problema inverso no tempo, obtivemos em qual estágio de formação de Jupiter aquele hipotético satélite teria sido capturado. Os resultados mostram que os satélites retrógrados são capturados assim que entram na região delimitada pela esfera de Hill do planeta, enquanto que os satélites prógrados só são capturados quando entram numa região bem mais próxima ao planeta, uma fração da esfera de Hill.

Winter, O. C.; Vieira Neto, E.; Yokoyama, T.

2003-08-01

336

Determinacao de estruturas cristalinas por difracao de raios-x: aplicacao a um complexo de lantanideo e um composto organico natural. (Determination of crystal structures by x-ray diffraction: applications to a lanthanide complex and a natural organic compound).  

National Technical Information Service (NTIS)

The study fir determining crystal structures of the Ho (ReO sub(4)) sub(3) 4 TDTD 3 H sub(2) O complex and the natural organic compound C sub(14) H sub(16) O sub(6) by X-ray diffraction are presented. The experimental equipments are described in details. ...

J. M. Miranda

1986-01-01

337

Heating a Fluid in Full Flow inside a Horizontal Cyclindrical Pipe Using Solar Energy Aquecimento de Um Fluido Em Escoamento Completamente Estabelecido No Interior de Um Tubo Cilindrico Horizontal Usando Energia Solar.  

National Technical Information Service (NTIS)

The transfer of heat in a stead laminar flow inside an horizontal cylindrical tube under solar radiation heating is discussed. It is supposed that the tube at rest and that the flow is fully developed to its profile. The mathematical analysis is limited t...

S. Cardoso

1980-01-01

338

8- to 9-um and 14- to 15-um two-color 640x486 GaAs\\/AlGaAs quantum well infrared photodetector (QWIP) focal plane array camera  

Microsoft Academic Search

An optimized long-wavelength two-color quantum well IR photodetector (QWIP) device structure has been designed. This device structure was grown on a three-inch semi- insulating GaAs substrate by molecule beam epitaxy (MBE). This wafer was processed into several 640 X 486 format monolithically integrated 8-9 and 14-15 micrometers two-color QWIP focal plane arrays (FPAs). These FPAs were then hybridized to 640

Sarath D. Gunapala; Sumith V. Bandara; Anjali Singh; John K. Liu; S. B. Rafol; Edward M. Luong; Jason M. Mumolo; N. Q. Tran; John D. Vincent; C. A. Shott; James F. Long; Paul D. Levan

1999-01-01

339

IIP Tropospheric Infrared Mapping Spectrometers (TIMS) demonstration of CO retrieval, including multi-layer, from atmospheric data acquired simultaneously in the solar reflective region near 2.3 um and the thermal emissive region near 4.7 um  

NASA Astrophysics Data System (ADS)

The NASA Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP) Tropospheric Infrared Mapping Spectrometers (TIMS) have been developed to demonstrate measurement capability, when deployed in space, for multi-layer retrieval of CO from spectral measurements acquired in the solar reflective (SR) region ~ 4281 to 4301 cm-1 and in the thermal InfraRed (TIR) region ~ 2110 to 2165 cm-1. We describe joint deployment at Denver University (DU) with co-investigators there of the TIMS, and of the DU colleagues FTS, to acquire simultaneous measurements of atmospheric spectra in the SR and the TIR. The FTS provided validation radiance data for the TIMS. The TIMS retrievals of CO, H2O and CH4 agreed well with validation vs these as retrieved from the DU data, AIRS retrieval, standard models and ECMWF. The TIMS CO retrievals included column retrieved from the just the SR data, column retrieved from just the TIR data, and a simple two-layer retrieval from the combined data sets. The data were acquired in an operational mode that mimicked the operations in a conceptual application that would provide footprints, coverage, refresh time as in the Decadal Survey GEO-CAPE mission statement. Very encouraging CO precisions were achieved, e.g., the TIMS CO column retrieval from the SR data demonstrated better than the 10% precision requirement as listed on slide 32 of the GEO-CAPE Reference document http://geo- cape.larc.nasa.gov/docs/GEOMAC_FinalReport_no_costs.ppt

Mergenthaler, J. L.; Kumer, J.; Roche, A. E.; Rairden, R. L.; Blatherwick, R.; Hawat, T.; Desouza-Machado, S.; Hannon, S.; Chatfield, R. B.

2008-12-01

340

8- to 9-um and 14- to 15-um two-color 640x486 GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane array camera  

NASA Astrophysics Data System (ADS)

An optimized long-wavelength two-color quantum well IR photodetector (QWIP) device structure has been designed. This device structure was grown on a three-inch semi- insulating GaAs substrate by molecule beam epitaxy (MBE). This wafer was processed into several 640 X 486 format monolithically integrated 8-9 and 14-15 micrometers two-color QWIP focal plane arrays (FPAs). These FPAs were then hybridized to 640 X 486 silicon CMOS readout multiplexers. A thinned FPA hybrid was integrated into a liquid helium cooled dewar to perform electrical and optical characterization and to demonstrate simultaneous two-color imagery. The 8-9 micrometers detectors in the FPA have shown background limited performance (BLIP) at 70 K operating temperature, at 300 K background with f/2 cold stop. The 14-15 micrometers detectors of the FPA have reached BLIP at 40 K operating temperature at the same background conditions. In this paper we discuss the performance of this long-wavelength dualband QWIP FPA in quantum efficiency, detectivity, noise equivalent temperature difference, uniformity, and operability.

Gunapala, Sarath D.; Bandara, Sumith V.; Singh, Anjali; Liu, John K.; Rafol, S. B.; Luong, Edward M.; Mumolo, Jason M.; Tran, N. Q.; Vincent, John D.; Shott, C. A.; Long, James F.; Levan, Paul D.

1999-07-01

341

O efeito do achatamento nos pontos de equilíbrio e na dinâmica de sistemas coorbitais  

NASA Astrophysics Data System (ADS)

Neste trabalho analisamos o efeito do achatamento do corpo principal nos pontos de equilíbrio lagrangianos e na configuração de órbitas girino-ferradura. Enfatizamos os sistemas coorbitais de satélites de Saturno, pois se encontram em relativa proximidade com o planeta, em que o efeito do achatamento se torna mais evidente. O estudo é dividido em três etapas independentes. Na primeira fase analisamos as equações de movimento do problema restrito de três corpos considerando o efeito do achatamento, e através do balanceamento de forças buscamos a nova configuração dos pontos de equilíbrio lagrangianos. Concluímos, nesta etapa, que os pontos de equilíbrio estáveis apresentam um pequeno deslocamento definido pelo parâmetro de achatamento, não podendo ser mais representados por triângulos eqüiláteros. Aplicamos este resultado aos satélites coorbitais de Tetis e Dione, encontrando as posições de equilíbrio levemente deslocadas em relação ao caso sem achatamento. Na segunda fase visamos o sistema Saturno-Jano-Epimeteu, que por se tratar de um sistema de massas comparáveis, optamos por desenvolver as equações de Yoder et al (Icarus 53, pág 431-443, 1983), que permitem determinar os pontos de equilíbrio e a amplitude de oscilação angular das órbitas girino-ferradura para o problema não-restrito de três corpos, porém, no nosso estudo consideramos o efeito do achatamento do corpo principal nestas equações. Encontramos que a distância angular entre satélites, quando em posição de equilíbrio estável, diminui quanto maior for o parâmetro de achatamento do corpo principal. Além disso, a órbita de transição girino-ferradura possui largura angular menor em relação ao caso sem achatamento. Por fim, realizamos integrações numéricas para os casos reais de coorbitais de Saturno comparando com os resultados analíticos. Nestas integrações simulamos diversas órbitas girino-ferradura com diferentes parâmetros de achatamento, utilizando condições iniciais corrigidas para a presença do achatamento.

Mourão, D. C.; Winter, O. C.; Yokoyama, T.

2003-08-01

342

Photonic time stretching of 102-GHz millimeter waves using 1.55-um polymer electro-optic modulator  

NASA Astrophysics Data System (ADS)

Photonic time-stretch has been proposed as a signal preprocessor to perform A/D conversion in otherwise inaccessible high frequency regimes. We have demonstrated time-stretching of MM-wave signals at frequencies up to 102 GHz down to 11 GHz , using an electrooptic modulator fabricated with the new polymer material PC-CLD. This application takes advantage of the inherent wideband capabilities of the PC-CLD material system, which has also demonstrated good optical insertion loss and high non- linearity at 1.55 micrometers . The dispersion penalty inherent to time-stretching imposes an additional bandwidth limit to that imposed by the modulator. A single-sideband modulator configuration is proposed to reduced the effect of this penalty.

Fetterman, Harold R.; Chang, Daniel H.; Erlig, Hernan; Oh, Min-Cheol; Zhang, Cheng H.; Steier, William H.; Dalton, Larry R.

2000-11-01

343

Deep ultraviolet positive resist image by dry etching (DUV PRIME): a robust process for 0.3 um contact holes  

NASA Astrophysics Data System (ADS)

Classical positive resist process for DUV is not yet available and stabilized. We noticed various limiting points such as the delay time for resist material, the limitation of thickness related to ultimate resolution, and the bulk effect. P.R.I.M.E. (Positive Resist Image by dry Etching) process technology using DUV 248 nm exposure wavelength improve solutions for each process parameters, for example, a well known and stable resist (J.S.R- U.C.B PLASMASK 200G) is used with Hexamethyldisilazane (HMDS) as silylated compound. The combination of DUV exposure and top surface imaging P.R.I.M.E. process can open contact holes down to 0.3 micrometers with a large process window and a good wafer uniformity. This publication will show the improvement of each process parameter. Extended information will be given for process latitude (focus and exposure). We demonstrated and verified the feasibility of the contact holes process by etching 1 micrometers oxide (BPSG + USG) through the PRIME process lithography.

Louis, Didier; Laporte, Philippe; Molle, Pascale; Ullmann, H.

1994-05-01

344

Traços de auto-organização: um estudo de caso na indústria de calçados em Fortaleza - Ceará - Brasil  

Microsoft Academic Search

This research intends to identify the features of auto-organization through the study of a case in the shoe industry in the city of Fortaleza - Brazil. Graphics and diagrams were elaborated as a casual link, to identify circular connections, to imply as a feature of auto-organization in the process of: 1) physic flow of raw material and finished products; 2)

Alexandre Gomes Galindo; Alexandre Araujo; Cavalcante Soares; Fabrício Augusto; Freitas Melo; Carlos Artur Sobreira Rocha

345

A Study of Similarity Functions in the Planetary Boundary Layer Um Estudo das Funcoes de Similaridade DA Camada Limite Planetaria.  

National Technical Information Service (NTIS)

Micrometeorological data obtained over tropical savannah (Koorin Experiment, 16 deg 16'S; 133 deg 23'E, Australia) were used to evaluate the similarity functions A, B and C in the planetary boundary layer. Different flux profile relationships, and scaling...

J. C. S. Chagas

1982-01-01

346

High-speed laser diagnostics at 1.06 um with simultaneous percussion hole drilling of aerospace materials  

Microsoft Academic Search

A diagnostic system was designed, fabricated and tested for measuring a Nd:YAG laser's performance using a five-axis laser machining center. Far field beam profile, beam quality, beam tilt and beam power were measured at high frequencies while holes were simultaneously percussion drilled in aerospace materials used in gas turbine engines. The system allowed determination of effects of varying laser and

Philip R. Cunningham; Marc Fahndrich; Jeffrey W. Oliver; Thomas S. Bertlesen; Richard W. Frye

1993-01-01

347

Burnout em Oncologia: um estudo com profissionais de Enfermagem Burnout in Oncology: a study of Nursing professionals  

Microsoft Academic Search

Objective: To verify if licensed practical nurses and Nursing technicians working at an Oncology department present burnout syndrome. Methods: Data of 21 licensed practical nurses and Nursing technicians who had worked for, at least, one year at the Oncology department of a large hospital in the city of São Paulo, Brazil, were collected. The burnout inventory developed by Maslach and

Stephanie Kitze; Andrea Bezerra Rodrigues

348

Burnout in Oncology: a study of Nursing professionals Burnout em Oncologia: um estudo com profissionais de Enfermagem  

Microsoft Academic Search

Objective: To verify if licensed practical nurses and Nursing technicians working at an Oncology department present burnout syndrome. Methods: Data of 21 licensed practical nurses and Nursing technicians who had worked for, at least, one year at the Oncology department of a large hospital in the city of São Paulo, Brazil, were collected. The burnout inventory developed by Maslach and

Stephanie Kitze; Andrea Bezerra Rodrigues

349

Emissivity measurements for YSZ thermal barrier coating at high temperatures using a 1.6-um single-wavelength pyrometer  

Microsoft Academic Search

A method that employs an integrating sphere and a single-wavelength (1.5-micrometers ) pyrometer to measure the spectral effective emissivities of YSZ thermal barrier coatings in the temperature range (approximately 650 to 1050 degree(s)C) is described. The effective spectral emissivities for two YSZ samples are measured as a function of the heat cycle duration. An increase in the emissivity of the

Sami D. Alaruri; Lisa Bianchini; Andrew Brewington

1998-01-01

350

Resist coating optimization on eight inches Deep-UV litho cell: modelization and application to 0.25 um technology  

NASA Astrophysics Data System (ADS)

One of the main problem for 0.25 micrometers features will be the depth of focus; Deep UV source will be necessary, but anyway DOF will be in the one micron range. So will it be possible to have CD in specifications all over the field? Many parameters have to be checked and monitored but the photoresist thickness on wafer is an important part due to the interferences franges created inside the photoresist during exposure. In order to reduce this phenomenon, we are used to choose the thickness on the flat part of the swing curve, for maximum or minimum coupling. As the wavelength is being lower, from 365 nm on i-line steppers to 248 nm on Deep UV steppers, this flat part length is reduced, so to obtain the same CD's repeatability the photoresist thickness uniformity must be improved in Deep-UV. This paper presents an effective method to obtain a Deep UV photoresist uniformity allowing 0.25 micrometers CD's in specification on the whole 8' wafer. A great number of process parameters may affect the resist coating uniformity, so we have decided to use the Designs Of Experiments to solve such a complicated problem with a minimum number of experiments. Due to the centrifuging process used to coat the resist on the wafer, the main uniformity default that can appear is a radial default. So we have chosen a combination of Taguchi and Response Surface Methods, in order to minimize the thickness variations versus the radius. First of all, to evaluate the effects of the 8 process parameters on this response, we have performed a screening design of 16 experiments. A statistical analysis has shown that the thickness variations depend on only 5 parameters. Then a Response Surface design of experiments has been achieved, with 27 experiments. A very accurate modelization of the uniformity default has been carried out from this design, and the optimization has led to a thickness standard deviation of only 3.3 angstrom on the whole wafer. Moreover the quality of the modelization, predictive in the complete domain, will allow to work out further problems.

Boutin, Daniel; Blash, Andrew A.; Caire, Jean P.; Poncet, Dominique; Fanton, Pierre; Danielou, Marianne; Previtali, Bernard

1995-05-01

351

Planarizing BARC 0.32-um i-line lithography process for the reduction of intradie CD variation  

NASA Astrophysics Data System (ADS)

The effects of increasing bottom-side anti-reflective coating (BARC) thickness on the CD distribution within a device are presented. In conjunction with the increasing BARC thickness, reductions in the photoresist thickness are shown to be beneficial. Significant reductions in CD variability and increases in the depth of focus versus CD spread are achieved with increased BARC and reduced photoresist thickness. Although significant improvements are seen with a thicker BARC film for the photolithography process, the importance of optimizing the etch process for the thicker films is shown. The effects of CD distribution on important electrical device parameters are also presented.

Johnson, Jeffrey R.; Davis, Audrey M.; Bair, Andrew E.; Nunan, Peter D.; Spinner, Charles R.; Spak, Mark A.; Dammel, Ralph R.

1997-07-01

352

Numerische Simulation Laminarer Hyperschall-Stroemungen Um Ellipsoide (Numerical Simulation of Laminar Hypersonic Flows About an Ellipsoid).  

National Technical Information Service (NTIS)

The laminar hypersonic flow about a double ellipsoid, which idealizes the nose and cockpit of a spacecraft, were numerically simulated. The calculation method solves the three dimensional thin layer Navier-Stokes equations in a conservative formulation on...

S. Riedelbauch B. Mueller

1988-01-01

353

Fabrication of 0.25-um electrode width SAW filters using x-ray lithography with a laser plasma source  

Microsoft Academic Search

A process for the fabrication of surface acoustic wave (SAW) devices with line widths of 250 nm and less, based on x-ray lithography using a laser-plasma source has been developed. The x-ray lithography process is based on keV x-ray emission from Cu plasma produced by 15 Hz, 50 ps, 248 nm KrF excimer laser pulses. The full structure of a

Romuald Bobkowski; Yunlei Li; Robert Fedosejevs; James N. Broughton

1996-01-01

354

Random Anisotropy Effects in Ising Spin Glass Efeitos de Anisotropia Aleatoria Em Um Spin Glass de Ising.  

National Technical Information Service (NTIS)

The thermodynamic properties of an Ising model for a spin glass are studied by mean field theory. Crystal field effects are considered and the crystal field parameter fluctuates about a mean value. The exchange is random with finite range but has a mean v...

M. C. Forti

1981-01-01

355

Propriedades físico-química e mineralógica de um perfil aluvionar de uso em cerâmica estrutural no Ceará  

Microsoft Academic Search

Russas' ceramic pole, situated in the east region of Ceará, is used to tiles and bricks production. In this paper, raw material's characterization was done to the understanding the mineralogical and physico- chemical properties of its composition. For this, sampling, mineralogical analysis and physico-chemical tests were made. Field observations showed that raw materials are explored until 3.0m depth. In this

Raimundo Humberto Cavalcante Lima; Maria Margarita Torres Moreno; Simone Ferreira Diniz

356

Pulsed-laser-induced damage in semiconductors Ge, ZnS, and ZnSe at 10.6um  

NASA Astrophysics Data System (ADS)

Laser irradiation induced damage to several materials of interest for use as 10.6 micrometers laser system windows is investigated in this paper. The irradiation source in these single shot experiments was a pulsed TEA CO2 laser. Damage initiation in semiconductors has been studied during the interaction by measuring the variation of the transmitted intensity of a He- Ne and a CO2 cw lasers through the samples. Results show that damages appear at the beginning of the laser-matter interaction process on both surfaces and in the bulk of the materials. The damaged materials have been characterized for various incident fluences by means of optical microscopy and scanning electron microscopy in terms of topography and morphology. The modified surface chemical analysis and the structural analysis have been carried out using energy dispersive x-ray and Raman spectroscopy.

Lefranc, Sebastien; Kudriavtsev, Eugene M.; Autric, Michel L.

1998-04-01

357

INFLUÊNCIA DA APLICAÇÃO DE ÁGUAS RESIDUÁRIAS DE SUINOCULTURA NA CAPACIDADE DE INFILTRAÇÃO DE UM SOLO PODZÓLICO VERMELHO-AMARELO 1  

Microsoft Academic Search

This work was carried out at the Experimental Area of Hydraulics, Irrigation and Drainage of the Agricultural Engineering Department, at the Federal University of Viçosa, Viçosa, Minas Gerais, Brazil. The aim was to evaluate the influence of successive applications of swine wastewater, with different concentrations of total solids, on the infiltration capacity of a Yellow Red Podzol. The experiment was

Rubens Alves Oliveira; Paulo Luis Gonçalves Campelo; Antônio Teixeira Matos; Mauro Aparecido Martinez; Paulo Roberto Cecon

358

Características físicas e físico-químicas de um tipo de bacuri (Platonia insignis Mart.) com rendimento industrial superior  

Microsoft Academic Search

Physical and physicochemical characterization were carried out on bacuri CPATU 207-3, originated from a mother-plant of the Germplasm Bank of Embrapa Amazônia Oriental. Fifty fruits were used for the physical characterization. Each fruit was characterized on the following aspects: color of the epicarp, shape, weight, length, diameter, thickness of the shell and the relative proportion (w\\/w) of the shell, pulp,

José Edmar Urano de Carvalho; Raimunda Fátima Ribeiro de Nazaré; Walnice Maria Oliveira do Nascimento

2003-01-01

359

Síndroma de abstinência alco- ólica - a propósito de um estu- do retrospectivo Alcohol Withdrawal Syndrome - a retrospecti- ve study  

Microsoft Academic Search

Alcohol consumption in our country remains high, with effects in different health areas, namely at the in- patient level. In this article we aimed to study the natural history of alcohol withdrawal syndrome, the different therapeutic approaches and the reference strategies after discharge. In order to do so, a retrospective study was performed and 81 in-patients with the diagnosis (primary

Pedro P Marques; João Namora

2001-01-01

360

A Compact SPDT Switch in 0.18um CMOS Process With High Linearity and Low Insertion Loss  

Microsoft Academic Search

A compact CMOS SPDT switch fabricated in 0.18 mum BiCMOS technology has been successfully demonstrated at X-Ku-band. The fully integrated chip exhibits a low insertion loss of 1.9 dB and an isolation of 22.5 dB at 17 GHz. By reverse biasing the source\\/drain (S\\/D) diode junctions, the switch achieves a PldB of 21 dBm and TOI greater than 30 dB

Mary Teshiba; Glenn Sakamoto; Terry Cisco

2007-01-01

361

Experimentelle Untersuchung des Instationaeren Druckfeldes Um Eine Schwingende Schaufel (Experimental Investigation of the Unsteady Pressure Field around an Oscillating Blade).  

National Technical Information Service (NTIS)

A two dimensional unsteady process for predicting the unsteady pressure distribution around an oscillating blade in homogeneous flow is presented. A data base was developed for the computation process. In order to reduce costs, the experimental building w...

C. Poensgen

1990-01-01

362

A 10GHz 2.8dB gain passive mixer in 0.18um CMOS technology  

Microsoft Academic Search

In this paper, a 10GHz high conversion gain (normally passive mixer is loss) passive mixer is proposed. By proper sizing of LO switches and matching network, the mixer is implemented in standard 0.18 µm CMOS technology. The mixer down-converts a 10 GHz RF frequency to an IF frequency of 1 GHz. An LO power of 0dBm is required to obtain

Ali Meaamar; Wei Meng Lim; Jiangmin Gu; Yang Liu; Kok Meng Lim; Kiat Seng Yeo; Jian Guo Ma; Wanlan Yang; Jinna Yan; Keping Wang; Chirn Chye Boon

2011-01-01

363

High-performance 5-um 640 x 480 HgCdTe-on-sapphire focal plane arrays  

NASA Astrophysics Data System (ADS)

A high-performance 5-micrometers 640 X 480 HgCdTe/CdTe/Al2O3 IR focal plane array (FPA) that offers full TV-compatible resolution with excellent sensitivity at temperatures below 120 K has been developed. Mean FPA D* at 95 K and background of 1014 photons/cm2 s is background-limited at approximately 1 X 1012 cm Hz1/2 W for the typical mean quantum efficiency of 60 to 70%. The key technology making this large, high-sensitivity device producible is the epitaxial growth of HgCdTe on a rugged CdTe-buffered sapphire substrate. Mean camera noise-equivalent temperature difference NE(Delta) T of 13 mK has been achieved at

Kozlowski, Lester J.; Bailey, Robert B.; Cabelli, Scott A.; Cooper, Donald E.; Gergis, Isoris S.; Chen, Annie C.; McLevige, William V.; Bostrup, G. L.; Vural, Kadri; Tennant, William E.; Howard, Philip

1994-01-01

364

Prevalência de sobrepeso e fatores associados em crianças ingressantes no ensino fundamental em um município da região metropolitana de  

Microsoft Academic Search

This study assessed the prevalence of overweight in public school first graders and the associa- tion between overweight and socio-environ- mental factors in a city in Greater Metropolitan São Paulo, Brazil. Children enrolling in public school first grade in Cajamar in 2005 were as- sessed. Overweight was defined according to body mass index, by gender and age. Socio-en- vironmental information

Lenise Mondini

365

Design of millimeter wave optical modulators with monolithically integrated narrowband impedance matching circuits for 1.3-um photonic links  

NASA Astrophysics Data System (ADS)

To implement millimeter wave photonic links using high speed optical modulators, RF input efficiency to the modulator is an important consideration. In this paper we discuss design and fabrication of ultra high speed multiple quantum well electro-absorption modulators for narrow band applications up to 40 GHz. In order to obtain higher RF efficiency at working frequencies of 20 GHz, 25 GHz and 40 GHz, modulators with monolithically integrated matching circuits were designed and fabricated utilizing co-planar waveguide MMIC technologies. Measurement results show excellent matching at specific frequencies with S11 of -16 dB for the 20 GHz devices, -20 dB for the 25 GHz devices and -36 dB for the 40 GHz devices. At least 6 dB of improvement on optical modulation efficiency can be expected over modulators without impedance matching.

Liao, Hsin H.; Mei, X. B.; Loi, Kwok Kwong; Tu, Charles W.; Yu, Paul K.; Asbeck, Peter M.; Chang, William S.

1996-11-01

366

High-linearity and -power 1.3-um AlGaInAs strained MQW DFB-LD  

NASA Astrophysics Data System (ADS)

AlGaInAs/InP strained MQW reversed-mesa RWG structure is proposed to reduce leakage current and improve linearity, and applied to make high linearity and high power 1.3 micrometers DFB-LD. For 1.3 micrometers AlGaInAs strained MQW DFB LD, the lasers operated with 10 mA threshold current, 0.48 mW/mA slope efficiency for one facet, 45 dB SMSR. The -3 dB cutoff frequency is 14 GHz, and the eye pattern is opened widely at 10 Gb/s. Under PAL 59 channels test, output power exceeds 15 mW with COS <-69.4 dBc, CTB <-69.4 dBc, CNR <-52 dB, which is the first reported RWG 1.3 micrometers DFB-LD for optical CATV application. This implies that AlGaInAs/InP strained MQW reversed-mesa RWG structure could effectively reduce leakage current.

Shen, Kun; Wang, Ren-Fan; Yue, Ai-Wen; Yang, Hong-Tao; Fan, Shi-Bin

2002-08-01

367

O GÊNERO ORIENTAÇÃO DE MESTRADO: ESTUDO DE CASO RELATIVO AO PERÍODO DE ESCRITURA DO PROJETO DE PESQUISA DE UM MESTRANDO  

Microsoft Academic Search

The present paper investigated a postgrad uate student's research. The genre was investigated through the methodology of descriptive case study. In the theoretical foundations of the research were taken into consideration the notions of genre, the discursive community (Swales, 1990) and the system of activiti es (Bazerman, 2004). Six sessions were analyzed, recor ded in audio, aiming to analyze the

Kelly Cristina

368

Implementation of high-contrast novolak resist process for sub-0.5-um e-beam lithography  

NASA Astrophysics Data System (ADS)

The use of interrupt develop has been reported to enhance the contrast and resolution of novolak resist systems for e-beam lithography. Experience with interrupt develop has demonstrated the ability to control sensitivity and contrast independent from the exposure dose. High contrast and flexible sensitivity are primarily due to the interaction of induction effects of the novolak resist and the length of the develop step. The induction effect is primarily dependent on absorbed energy in the resist. Understanding the distribution of absorbed energy in the resist allows use of the induction effect to control resist profile and image size. A sidewall passivation phenomena results from interrupting the develop process. The passivation enhances the directionality of develop, yielding additional resist profile control. Three diazonapthoquinone novolak resists have been implemented for the fabrication of x-ray masks. During implementation of the resists, the molecular weight of the base resin was found to have a major influence on contrast and image quality. The results show the resolution and image size control achieved using systematic interrupt develop processing.

Williams, Dennis J.

1994-12-01

369

Negative differential gain in 1.3um quantum dot lasers: comparison of self-heating and free carrier effects  

NASA Astrophysics Data System (ADS)

A comparative study of the gain spectra of quantum-dot lasers at high carrier densities is reported. The gain spectra of quantum dot lasers under a constant junction temperature (obtained by the use of Fabry-Perot modes as a temperature gauge) and under constant heat-sink temperatures are measured. Negative differential gain, observed for the ensemble of quantum dot ground-states is shown to be mainly due to free carrier effects, where increasing dephasing effects, combined with saturated gain, result in spectral broadening and a reduction in the peak gain.

Shahid, H.; Childs, D. T. D.; Stevens, B. J.; Hogg, R. A.

2012-02-01

370

Near-achromatic retardance behavior of HN22 Polaroid 3.6 to 5.4 um  

NASA Astrophysics Data System (ADS)

Polaroid HN22, a popular sheet polarizer, has been measured to be a nearly half wave retarder in the 3.6 to 5.4 micrometers spectral band with a transmittance of approximately 20 percent. The exact retardance value may be tuned to the range of 60 degrees - 260 degrees by tilting the HN22 with respect to the incident beam. The material's polarizing effects have been shown to be minimal in this waveband. Its availability, relatively large available aperture, large filed of view, and low cost make HN22 an excellent candidate for use as an IR retarder for systems operating from 3.6 to 5.4 micrometers . As such, HN22 may be used for rotating the plane of polarization of an incident linearly polarized beam as well as to convert between circular polarization states.

Lompado, Arthur; Sornsin, Elizabeth A.; Chipman, Russell A.

1997-10-01

371

~2.1 um Tm3+-Ho3+ co-doped tungsten tellurite single mode fiber laser  

NASA Astrophysics Data System (ADS)

We investigate the spectroscopic and lasing performance of Tm3+-Ho3+ co-doped tungsten tellurite single mode fiber operating around 2.1 ?m with a commercial 800 nm diode laser pump source. The optimum doping concentration of Tm2O3 and Ho2O3 in Tm3+-Ho3+ co-doped TeO2-WO3-La2O3 (TWL) glass is 1 mol% and 0.5 mol%, respectively. The lifetime of Ho3+:5I7 level is 3.3 ms in the bulk glass. The maximum stimulated emission cross-section of Ho3+ in TWL is 10.0×10-21cm2. The tungsten tellurite single mode fibers are prepared by using rod-in-tube method. The infrared emission spectra are compared with varying fiber lengths. Tm3+-Ho3+ co-doped fiber shows weak emission at ~1.9 ?m very strong emission at ~2.1 ?m, which indicates efficient energy transfer from Tm3+ to Ho3+ in the fiber. The 1.47 ?m emission increases with the increment of the fiber length, which means a back energy transfer from Ho3+ to Tm3+. A 106 mW continuous wave laser emission at ~2.1 ?m is demonstrated from a 16 cm length of this fiber, the slope efficiency is 23%, corresponding to a 17% optical to optical efficiency. Lasing has also been achieved in <5 cm length of this fiber, making this material a promising candidate for single frequency ~2.1 ?m laser sources.

Li, Kefeng; Zhang, Guang; Hu, Lili; Wang, Meng; Chen, Danping

2012-02-01

372

Technology of electroplating copper with low-K material aC:F for 0.15-um damascence interconnection  

Microsoft Academic Search

In our work, fluorinated amorphous carbon films (a-C:F) was deposited by PECVD. The amorphous carbon films (a-C:F) with low dielectric constant (K-2.3), thermal stability and acceptable adhesion to cap-layer such as SiOF was obtained by optimum of content ration between carbon with fluorine and adding few SiH4 for improvement of adhesion. The etching profile with high aspect ratio and etching

Jia-Min Shieh; Shich-Chang Suen; Kuen-Chaung Lin; Shih-Chieh Chang; Bau-Tong Dai; Chia-Fu Chen; Ming Shiann Feng

2000-01-01

373

Technology of electroplating copper with low-K material a-C:F for 0.15-um damascence interconnection  

NASA Astrophysics Data System (ADS)

In our work, fluorinated amorphous carbon films (a-C:F) was deposited by PECVD. The amorphous carbon films (a-C:F) with low dielectric constant (K-2.3), thermal stability and acceptable adhesion to cap-layer such as SiOF was obtained by optimum of content ration between carbon with fluorine and adding few SiH4 for improvement of adhesion. The etching profile with high aspect ratio and etching selection ration more than 50 (a- C:F/SiOF) were obtained by etching gas of N2+O2. Furthermore, we demonstrated the technology of electroplating copper in trenches or vias as small as 0.15 micrometers , 6:1 AR. The wetting agent system was consisted of mainly two molecular weights polyethylene glycols (PEG). The small molecular weight PEG with better diffusion ability for reducing the surface tension and the larger PEG enhancing grain growth control was proposed for the first time to wet the inner portion of the sub- 150 nm damascene feature. The leveling agent system was mainly heterocyclic compound contained N, S atoms offering sufficient activation over-potential and selective inhibition gradient.

Shieh, Jia-Min; Suen, Shich-Chang; Lin, Kuen-Chaung; Chang, Shih-Chieh; Dai, Bau-Tong; Chen, Chia-Fu; Feng, Ming Shiann

2000-08-01

374

Photoablation with the free-electron laser between 10 and 15 um in biological soft tissue (cornea)  

NASA Astrophysics Data System (ADS)

The ablation depth and collateral thermal damage for pulsed IR photoablation as a function of wavelength with the free- electron laser (FEL) at 10.1, 11.8, 12.8, and 14.5 micrometers wavelengths is investigated. FEL data are compared with the blow-off and the continuous ablation models. Porcine cadaver corneas were used as target material. The experimental data are compared with theoretical calculations for both models. At low water absorption the additional absorption of the cornea was taken into account. FEL data were: energy per pulse between 15.6 and 17.8 mJ, ablation zone around 0.2 mm2, and pulse length 4 microsecond(s) . In this wavelength range an effective photoablation of biological materials with a high water content can be achieved. The measured FEL data of ablation depth fail to confirm the blow-off model, describing ablation depth sufficiently well. The wavelength, collagen absorption contributes to the overall absorption of corneal tissue. The ablation depth can only be described by the continuous ablation model; however, the collateral thermal damage pattern can be described by both models.

Walker, Rudolf; Ostertag, Manfred; van der Meer, Alexander F.; Bende, Thomas; Schmiedt, Karl C.; Jean, Benedikt J.

1997-04-01

375

Lazer, Educação e Teoria das Inteligências Múltiplas: Resultados Preliminares de um Estudo com Crianças e Pré- Adolescentes  

Microsoft Academic Search

An interdisciplinary project that has involved Fafibe's Undergraduate Bachelor and Teacher Physical Education Courses and it has had as purpose to study Multiple Intelligences Theory and its relation and potential with plays and games in leisure education, through the research, and the cultural dissemination from the extension. We had as main purpose to comprehend the leisure as a sociocultural component

L. F Silva; J. L. Justino; P. A. Cotrim

376

Avaliação dos fatores de risco para mucosite oral em um grupo de pa- cientes sob terapia de transplante  

Microsoft Academic Search

The bone marrow transplantation is a procedure where agressive medications are used. One of complications that determine the morbidity to the patients is the oral mucositis. Objective: to identify the risk factors associated with the appearance of early oral mucositis in patients undergoing bone marrow transplant (BMT) in Santa Casa Hospital in São Paulo. Material and method: we retrospectively re-

Ivo Bussoloti

2007-01-01

377

Polarizers at 1.053 um deposited on silica substrate for high laser flux applications in a vacuum  

Microsoft Academic Search

The French Megajoule Project requires polarizers with high laser-induced damage thresholds. Such polarizers must be deposited on silica substrates, which are commonly prone to stress leading to early failure. Better stress control in the films require an optimization of the stack design as well as the deposition parameters. The thermal e-beam technique is used. We present the spectral behavior of

Bernard Geenen; Herve Leplan; B. Pinot; W. Alexandre; P. Pally; Larry A. Roussel; Odile Lam

1996-01-01

378

Polarizers at 1.053 um deposited on silica substrate for high laser flux applications in a vacuum  

NASA Astrophysics Data System (ADS)

The French Megajoule Project requires polarizers with high laser-induced damage thresholds. Such polarizers must be deposited on silica substrates, which are commonly prone to stress leading to early failure. Better stress control in the films require an optimization of the stack design as well as the deposition parameters. The thermal e-beam technique is used. We present the spectral behavior of such 1.03 micrometers polarizers in air and under vacuum at the Brewster incidence angle of 55 degrees 4 along with the damage test results.

Geenen, Bernard; Leplan, Herve; Pinot, B.; Alexandre, W.; Pally, P.; Roussel, Larry A.; Lam, Odile

1996-08-01

379

TRIBUTO A HERMES - UM ESTUDO EMPÍRICO SOBRE O CONTEÚDO DAS MISSÕES DAS EMPRESAS COM BASE NO MODELO DE GESTÃO ECONÔMICA  

Microsoft Academic Search

The objective of this research is to empirically ve rify how companies show their strategic objectives through the mission statements. The cont ent analysis tool has been used in order to study the mission statements of 22 corporate govern ance differentiated companies. The results of this paper indicate that, as in literature, ther e is no consensus about what should

CECÍLIA MORAES SANTOSTASO; GUILLERMO OSCAR BRAUNBECK

380

Thermal and chemical modification of dentin by pulsed CO2 laser irradiation at 9 to 11 um  

Microsoft Academic Search

Previous studies have shown that dentin can be thermally modified by pulsed CO2 laser irradiation to form a more highly mineralized tissue. The implications are important for the potential laser modification or removal of dentinal and root caries. Temperature excursions were followed after (lambda) equals 9.3, 9.6, 10.3, and 10.6 micrometers laser irradiation with pulses of 100 (Mu) s duration

Daniel S. Fried; Michael J. Zuerlein; John D. Featherstone; Darren Machule

1997-01-01

381

Implantação e funcionalidades de um sistema de informação geográfica mineral na Companhia Vale do Rio Doce - CVRD  

Microsoft Academic Search

This work develops a geoprocessing application model to the necessities of a mining company in technician works about geologic evaluation resources and mineral research, enclosing governmental factors. A model for the implantation of a System of Geographic Information is presented, with the use of geoprocessing techniques, the organization in a georreferenced data base is possible, centered and in the same

Patrícia Procópio Calazans

382

Analysis of Phase Noise in a J Band Transmitter Analise Do Ruido de Um Transmissor NA Faixa J.  

National Technical Information Service (NTIS)

The phase noise analysis of a frequency generation system using synthesizers and multipliers is described. Rules are shown which can be used in the definition of the system block diagram. An example is presented for a transmitter in band J.

W. J. Fleming

1981-01-01

383

Estudos do sistema de vacuo para um acelerador linear de eletrons. (Studies of vacuum systems for a linear electron acelerator).  

National Technical Information Service (NTIS)

In the study of vaccum parameter system in the structure of a linear electron accelerator feeded by radio-frequency, the periodical release of adsorbed gases should be considered. For high power machines a structure inside a vaccum shield are recommended....

O. L. Goncalez R. Silva

1985-01-01

384

Distribuição e abundância de ninhos de Solenopsis invicta Buren (Hymenoptera: Formicidae) em um agroecossistema diversificado sob manejo orgânico  

Microsoft Academic Search

The distribution of Solenopsis invicta Buren (Hymenoptera: Formicidae) nests, the effect of abiotic factors on the species population density, and possible influence on species richness of other ants were investigated in a diversified agroecosystem in the Southeast of Brazil. Plots cultivated with different crops were sampled in the Sistema Integrado de Produção Agroecológica, in Seropedica, RJ, Brazil. The nest distribution

Fábio Souto Almeida; Jarbas Marçal Queiroz; Antônio José Mayhé-Nunes

2007-01-01

385

Evaluation of 0.4- to 2.2-um atmospheric correction techniques using the spectral similarity scale  

NASA Astrophysics Data System (ADS)

The purpose of this research study is to evaluate the effectiveness of atmospheric correction and radiometric calibration techniques by measuring the differences of corrected data and ground truth spectra. Several atmospheric correction methods have been performed utilizing the ATREM and ACORN software packages. A variety of different settings (14 for ATREM and 5 for ACORN) have been tested and evaluated. The Spectral Similarity Scale (SSS) developed by BAE SYSTEMS is a measure of spectral similarity based on spectral magnitude and shape. The SSS-based spectral comparison process indicates that the default settings for iron rich soils are the best ATREM inputs for the Shelton, NEAVIRIS scene. The SSS comparison of the ACORN results with the spectral ground truth revealed that ACORN with the artifact type 1 was the best correction setting available for both ATREM and ACORN. For atmospheric water we find that ACORN is superior to ATREM. ATREM does correct for gain offsets that ACORN does not correct for with default settings. When used incorrectly, it is possible to severely reduce the spectral accuracy with either software package.

Granahan, James C.; Sweet, James N.

2001-12-01

386

RELATO DE EXPERIÊNCIA: TERAPIA ASSISTIDA POR ANIMAIS (TAA) - MAIS UM RECURSO NA COMUNICAÇÃO ENTRE PACIENTE E ENFERMEIRO  

Microsoft Academic Search

This study consists of an experiment report after getting to know the benefits obtained through Animal Assisted Therapy in four health institutions of the city of São Paulo. The visits occurred in the second semester of 2001 in one place specialized in special education for children with diverse syndromes; one that houses old people who are abandoned or with no

Cíntia Hissae Kawakami; Cyntia Kaori Nakano

387

Highly efficient third harmonic generation of 1.32-um radiation of a Nd:YAG laser in KTP  

NASA Astrophysics Data System (ADS)

We report highly efficient cascade tripling of 1.32 micrometers Nd:YAG laser emission using combination of LiIO3 and KTP crystals. The generation of 0.44 micrometers radiation in KTP has been shown to occur at the purely noncritical phase-matching condition at slightly elevated temperature. Conversion efficiency of third harmonic generation in relation to second harmonic energy was approximately 60% in 4 mm long KTP crystal. The temperature and angular characteristics of conversion are presented.

Damazyan, G. S.; Sanamyan, T. V.

1999-12-01

388

New development of a long linear array for 11.3- to 12.3-um Earth observation  

Microsoft Academic Search

In the frame of technological preparation for scientific Earth observation programs, the European Space Agency (ESA) has undertaken breadboarding activities dedicated to high resolution thermal radiometer to be implemented on a Low Earth Orbit satellite. Based on the lessons learned during the previous breadboarding phase and taken into account the modification of instrument concept, a LWIR linear focal plane breadboard

Olivier Saint-Pe; Olivier Donnadieu; Robert Davancens; Zoran Sodnik; Roland Meynart; Jean Paul Chamonal; Raymond Boch; Michel Vuillermet

1998-01-01

389

Ultrafast modulation of 1.55-um QW laser structures: optically detected carrier dynamics, limiting mechanisms, and applications  

NASA Astrophysics Data System (ADS)

This paper proceeds from basic research on carrier dynamics to applications in high-speed laser devices. Different retardation mechanisms are studied experimentally and theoretically providing input for the design of high-speed laser devices. Optically detected carrier dynamics in III/V semiconductor quantum well (QW) heterostructures perpendicular to the interfaces is studied. Photoluminescence emissions originating from different semiconductor layers are recorded time-resolved to probe the carrier dynamics between these layers. High spatial and temporal resolution is obtained experimentally, partly even in the nm and sub-ps ranges, respectively. Retardation effects are separated and studied experimentally and theoretically by corresponding model calculations. A material comparison shows that GaInAsP is beneficial due to considerable advantages in technological implementation processes and AlGaInAs is superior from a physical point of view enabling higher modulation band-widths due to larger conduction band discontinuities. The equalization of the carrier densities in the individual wells is found to be mainly retarded by hole thermionic emission. Hole transport in the p-sided confinement layer and electron capture from the p-sided confinement layer is also found to be also a limiting factor. These results are used to optimized AlGaInAs/InP lasers with asymmetric confinement layers. The p-sided confinement layer is reduced on the costs of the n- sided confinement layer to obtain (1) a faster hole transport across the p-sided confinement layer and (2) to accelerate the capture of electrons from the p-sided confinement layers being uncaptured during the transfer across the QWs. In our experiments a modulation bandwidth of 26 GHz is obtained. Even higher values are found in corresponding theoretical model calculations demonstrating an interesting development potential.

Hillmer, Hartmut; Marcinkevicius, Saulius

1999-03-01

390

Characterization of candidate DIAL lidar water-vapor and carbon dioxide absorption lines in the 2-um region  

Microsoft Academic Search

DIAL lidar for water-vapor and temperature remote sensing in the eye-safe two micron region has been receiving much interest. Such systems rely on accurate spectral line characterization. Typically spectral line properties are taken from the HITRAN database. A series of transmittance measurements are made to complete and improve the HITRAN database in this important spectral region. A 3-meter base-path White

Raymond M. Sova; Michael E. Thomas; David Tobin; Daniel Byrum; L. Larrabee Strow

1995-01-01

391

Fatigue behavior in water of Y-TZP zirconia ceramics after abrasion with 30 um silica-coated alumina particles  

PubMed Central

Objective The use of a 30 µm alumina–silica coated particle sand (CoJet™ Sand, 3M Espe), has shown to enhance the adhesion of resin cements to Y-TZP. The question is whether or not sandblasting 30 µm particles does negatively affect the fatigue limit (S–N curves) and the cumulative survival of Y-TZP ceramics. Method Four zirconia materials tested were: Zeno (ZW) (Wieland), Everest ZS (KV) (KaVo), Lava white (LV) and Lava colored (LVB) (3M Espe). Fatigue testing (S–N) was performed on 66 bar of 3 mm × 5 mm × 40 mm with beveled edges for each zirconia material provided by the manufacturers. One half of the specimens were CoJet sandblasted in the middle of the tensile side on a surface of 5 mm × 6 mm. Cyclic fatigue (N = 30/group) (sinusoidal loading/unloading at 10 Hz between 10% and 100% load) was performed in 3-point-bending in a water tank. Stress levels were lowered from the initial static value (average of N = 3) until surviving 1 million cycles. Fatigue limits were determined from trend lines. Kaplan–Meier survival analysis was performed to determine the failure stress at the median percentile survival level for 1 million of cycles before and after sandblasting. The statistical analyses used the log-rank test. Characterization of the critical flaw was performed by SEM for the majority of the failed specimens. Results The fatigue limits “as received” (ctr) were: LV = 720 MPa, LVB = 600 MPa, KV = 560 MPa, ZW = 470 MPa. The fatigue limits “after CoJet sandblasting” were: LV = 840 MPa, LVB = 788 MPa, KV = 645 MPa, ZW = 540 MPa. The increase in fatigue limit after sandblasting was 15% for Zeno (ZW) and Everest (KV), 17% for Lava (LV) and 31% for Lava colored (LVB). The KM median survival stresses in MPa were: ZW(ctr) = 549 (543–555), ZW(s) = 587 (545–629), KV(ctr) = 593 (579–607), KV(s) = 676 (655–697), LVB(ctr) = 635 (578–692), LVB(s) = 809 (787–831), LV(ctr) = 743 (729–757), LV(s) = 908 (840–976). Log-rank tests were significantly different (p < 0.001) for all sandblasted groups vs. the “as received” except for Zeno (Wieland) (p = 0.295). Failures started from both intrinsic and machined flaws. Significance 30 µm particle sandblasting did significantly improve the fatigue behavior of three out of four Y-TZP ceramic materials and can therefore be recommended for adhesive cementation procedures. This study was supported in part by grants from the Swiss Society for Reconstructive Dentistry (SSRD) and 3M Espe.

Scherrer, Susanne S.; Cattani-Lorente, Maria; Vittecoq, Eric; de Mestral, Francois; Griggs, Jason A.; Wiskott, H.W. Anselm

2011-01-01

392

Tolerant low-loss three-lens coupling system for 1.48-um unstable-cavity lasers  

NASA Astrophysics Data System (ADS)

A 1.48-micrometer unstable-cavity laser is coupled into a single-mode fiber using three microlenses. Reproducible coupling of very high power is demonstrated with different types of lenses (plano-convex or bi-convex, with different apertures). Over 550 mW in single-mode fiber were reproducibly reached; to our knowledge, it is the highest power coupled into a single-mode fiber from a single semiconductor laser at this wavelength. Tolerance measurements on all of the coupling elements of a three-lens system are reported for the first time; an unexpected very large tolerance on the axial displacement of the second lens was measured. Results and interpretation with the aid of Gaussian and aberration simulations are also presented. Finally, we report on the first realization of a module with 46% chip to fiber coupling efficiency.

Boubal, Francois; Delepine, Sylvie; Salet, Paul; Gerard, Franck; Cornec, David; Di Maggio, Michel; Goix, Michel; Chardon, Jean-Pierre; Grard, Emmanuel

2000-03-01

393

Avaliação de habilidades sociais de crianças com um inventário multimídia: indicadores sociométricos associados a freqüência versus dificuldade  

Microsoft Academic Search

The field of the social competence and social skills evaluation are permeated of contradictory results, largely associated to the use, in many studies, of different indexes, informers and concepts. Given the relevance and relative scarcity of studies on that subject, in p articular about children's s elf-evaluation, the present paper aims to compare differences and similarities, in some psychometric properties

Zilda Aparecida Pereira Del Prette; Almir Del Prette

2002-01-01

394

Proposta de Informatização de um Processo de Prescrição de Atividade Física Integrado ao Prontuário Eletrônico do Paciente  

Microsoft Academic Search

Introduction: The physical activity as well as exercise, become allies in prevention of diseases, especially those of chronic degenerative character. While it is agreed that the practice of physical exercise has a beneficial role for the health of the population especially for the elderly, the health professional for lack of specific training, find great difficulty in steer and guide their

Eduardo Fernando; Cianci Gomes; Ivan Torres Pisa; Claudia Galindo; Novoa Barsottini

395

OSTEOPENIA: UM AVISO SILENCIOSO ÀS MULHERES DO SÉCULO XXI Osteopenia: a silent warning to women of the XXI Century  

Microsoft Academic Search

The lack of body culture of the population, allied to the need for knowledge by Physical Education professionals of the health area, regarding the value of physical activity in an existential perspective, has contributed, in a negative way, to the evolution of humanity. Women, in the pre-menopause phase, have suffered various consequences due to this lack of culture, constituting, thus,

Cláudio Joaquim; Borba Pinheiro; Mauro César; Gurgel de Alencar Carvalho; Estélio Henrique; Martin Dantas

396

Low temperature bonding of 30um pitch micro bump interconnection for 3D IC stacking using non-conductive adhesive  

Microsoft Academic Search

For evaluating the feasibility of adhesive bonding by NCF (non-conductive film) in micro bump joints, three types of micro joints were adopted in this study. The structure of the type I micro joints was Cu\\/Ni\\/Au while that of the type II micro joints was Cu\\/Ni\\/Au micro bump joined with Cu\\/Sn solder micro bump. Both the type I and type II

Yu-Min Lin; Chau-Jie Zhan; Yu-wei Huang; Su-Ching Chung; Chia-Wen Fan; Su-Mei Chen; Yu-Lan Lu; Tai-Hong Chen

2011-01-01

397

High resolution analysis of the ethylene-1-13C spectrum in the 8.4-14.3 um region  

SciTech Connect

Fourier transform spectra of mono-13C ethylene have been recorded in the 8.4-14.3- ?m spectral region (700 cm-1 to 1190 cm-1) using a Bruker 120 HR interferometer at a resolution of 0.0017 cm-1 allowing the extensive study of the set of resonating states {101, 81, 71,41,61}. Due to the high resolution available as well as the extended spectral range involved in this study, a much larger set of line assignments are now available. The present analysis has leads to the determination of more accurate spectroscopic constants including interaction constants than were obtained in earlier studies. In particular, the following band centers were derived: ?0(?10) = 825.40602(30) cm-1, ?0(?8) = 932.19572(15) cm-1, ?0(?7) = 937.44452(10) cm-1, ?0(?4) = 1025.6976(14) cm-1. Finally a synthetic spectrum was generated leading to the assignment of a number of 13C12CH4 lines observed through an earlier heterodyne spectroscopic study.

Flaud, Jean Marie; Lafferty, Walter J.; Sams, Robert L.; Devi, V. M.

2010-01-29

398

Diffraction properties of a 0.24-um period multilayer laminar amplitude grating in the soft x-ray region  

NASA Astrophysics Data System (ADS)

We report on the fabrication of a laminar multilayer amplitude grating, characterization in the soft x-ray region, and modeling of its properties. Holographic lithography was used to produce a 0.24-micrometers spatial period grating on a triode sputtered Mo/C multilayer mirror. The pattern was transferred into the multilayer mirror by reactive ion etching in an SF6 plasma after an intermediate lift-off step. The position and relative efficiency of the different orders of a grating etched down to the silicon substrate were measured at the Cu L(alpha (beta) ) line (1.33 nm). The results were interpreted in the framework of a scalar kinematic diffraction theory.

Berrouane, H.; Khan Malek, Chantal; Andre, Jean-Michel; Ladan, F. R.; Rivoira, Jean-Rene; Barchewitz, Robert J.

1992-02-01

399

Diffraction properties of a 0.24-um period multilayer laminar amplitude grating in the soft x-ray region  

NASA Astrophysics Data System (ADS)

We report on the fabrication of a laminar multilayer amplitude grating, characterization in the soft x-ray region, and modeling of its properties. Holographic lithography was used to produce a 0.24-micrometers spatial period grating on a triode sputtered Mo/C multilayer mirror. The pattern was transferred into the multilayer mirror by reactive ion etching in an SF6 plasma after an intermediate lift-off step. The position and relative efficiency of the different orders of a grating etched down to the silicon substrate were measured at the Cu L(alpha (beta) ) line (1.33 nm). The results were interpreted in the framework of a scalar kinematic diffraction theory.

Berrouane, H.; Khan Malek, Chantal; Andre, Jean-Michel; Ladan, F. R.; Rivoira, Jean-Rene; Barchewitz, Robert J.

1992-05-01

400

IMPLANTAÇÃO DE PROCESSOS DE APRENDIZAGEM A DISTÂNCIA NO CENTRO UNIVERSITÁRIO SALESIANO DE SÃO PAULO: UM ESTUDO DE CASO  

Microsoft Academic Search

This paper presents and discusses the experience in setting up distance learning in the undergraduate courses level at UNISAL (Centro Universitário Salesiano de São Paulo). The purpose of creating proceedings and orientations is to contribute to the establishment of an institutional culture through the Distance Learning Construction Program. It was considered that the distance learning alternative mediated by computers is

Maria L. Tarcia; Anderson Luiz Barbosa; Renato Kraide Soffner

401

O modelo de atenção integral à saúde para tratamento de problemas decorrentes do uso de álcool e outras drogas: percepções de usuários, acompanhantes e profissionais* Integral healthcare model for treating problems caused by alcohol and other drugs: perceptions of users, their companions and practitioners  

Microsoft Academic Search

Based on an integral healthcare model for the users of alcohol and other drugs, the ex- pansion of Brazil's Psycho-Social Care Centers ? Alcohol and Drugs (CAPS-AD) is guided by the acknowledgement of users as citizens rather than patients, aiming at social reinsertion through an intersectoral approach and damage control, as well as other principles designed to build up integral

Maristela Moraes

402

Laser tissue melding: use of 1.32-um computerized Nd:YAG laser, results of leak/burst strength studies in microsurgical procedures  

NASA Astrophysics Data System (ADS)

The ProClosureTM System (PCS) consists of a low power 1.32micrometers Nd:YAG laser coupled to a handheld disposable fiber optic device. The system has been designed to perform a wide range of tissue welding applications such as cosmetic skin closure,vascular surgery, and minimally invasive surgical procedures normally performed with sutures and staples. Utilizing a wavelength for tissue fusion that is least distracted by medium in the surgical field coupled with a computerized delivery system allows for a more precise application (+/- 5%) of laser energy to the tissue. The study design involved the micro-surgical anastomosis of twenty Sprague-Dawley rats (vas deferens) and twenty-one Sprague-Dawley rats (femoral arteries). Each rat is its own contralateral control. Laser repair time is approximately one-third that of conventional suturing. Postoperative dissection and burst strength testing was conducted at day 0, 1, 7, and 14. At each postoperative interval, the mean leak/burst strength for laser-assisted closure v. control, was markedly higher. The precise application of energy fluence resulting from ProClosure's computerized system yields an initial strength and a fluid static seal that is superior to conventional suture closure.

Anderson, Dallas W.; Hsu, Tung M.; Halpern, Steven J.; Honaker, Arnold

1993-07-01

403

ANÁLISE DOS INDICADORES DE HEMORRAGIA LETAL EM VÍTIMAS DE TRAUMA PENETRANTE DE TRONCO ADMITIDAS EM CHOQUE: UM MÉTODO OBJETIVO PARA SELECIONAR OS CANDIDATOS AO \\  

Microsoft Academic Search

RESUMO: Objetivo: Identificar os indicadores de hemorragia letal em vítimas de trauma penetrante de tronco, admitidas com hipotensão arterial sistêmica e analisar sua aplicabilidade na seleção dos candidatos ao \\

José Gustavo Parreira

404

Integrated IMP Ti and MOCVD TiN for 300-mm W barrier and liner for sub-0.18-um IC processing  

Microsoft Academic Search

The combination of IMP Ti and CVD TiN is well established for use as W-adhesion films for 200 mm wafers. The advantage of this unique PVD\\/CVD integrated solution provides the superior Ti bottom coverage by IMP Ti and conformal TiN coverage from MOCVD TiN. A 300 mm liner and barrier system with integrated IMP Ti, MOCVD TiN has also been

Anish Tolia; Marlon Menezes; Jason Li; Michael Jackson; Vikram Pavate; Nitin Khurana; Rod Mosely; Murali K. Narasimhan; Mei Chang; Fusen E. Chen

1999-01-01

405

Investigation of pulsed 1.44 um Nd:YAG laser in nasal and sinus surgery: in vitro and in vivo animal study  

NASA Astrophysics Data System (ADS)

The Nd:YAG laser 1.44 micrometers wavelength is a relatively new wavelength with water absorption coefficient higher even than 1.06 micrometers , permitting the creation of a more precise lesion with less damage to surrounding tissue. Very little, however, is known about its effects in live experimental model. The non-contact 1.44 micrometers Nd:YAG laser was used in four animals (dogs) to perform a resection of middle turbinate and to create a 1 cm lesion on the septal mucosa and inferior turbinate in the left side through a sinuscope. The same procedure was performed on the opposite side using microsurgical forceps as a control. The animals were followed-up, examined endoscopically, and sacrificed after 48 hours (1 animal), 1 month (1 animal) and 2 months (2 animals). Moderate-to-severe bleeding was commonly encountered on the control side, which obscured vision, and required packing in 2 dogs. In contrast, the laser had a satisfactory hemostatic result with easy control for endoscopic resection. Normal healing was observed under gross and by histologic examination 48 hours and 1 month after the surgery and healing was complete by 2 months. There was more scaring and adhesions produced by the forceps on the control side. Histologically, tissue thermal damage produced by the laser was superficial and confined to the lesion. The epithelial regeneration has been nearly completed in 1 month, with normal mucosa coverage in 2 months after the surgery. This study suggests that the 1.44 micrometers wavelength of the Nd:YAG should be considered as safe and reliable for intranasal application.

Rebeiz, Elie E.; Wang, Zhi; Pankratov, Michail M.; Perrault, Donald F.; Shapshay, Stanley M.

1995-05-01

406

Triple-level metal process for high-performance and high-density 0.6-um\\/5-V application-specific integrated circuits  

Microsoft Academic Search

In this paper a triple level metal interconnect process for a commercially available high density, high performance 0.6 micrometers \\/5V CMOS technology is described. Poly gates of 0.6 micrometers (Leff equals 0.45 micrometers ) were fabricated and then planarized by BPSG reflow and resist etch back. Blanket W and etch back were used to fill high aspect ratio contacts and

Sharad Prasad; M. Bruner; Fusen E. Chen; Mitan Gandhi; Y. C. Lu; Chiyi Y. Kao; Steve Yang; William Hata

1993-01-01

407

In Situ Measurements of H 2 O From a Stratospheric Balloon by Diode Laser Direct-Differential Absorption Spectroscopy at 1.39 um  

Microsoft Academic Search

A distributed-feedback InGaAs laser diode emitting near 1.393 m is used in conjunction with an optical multipass cell that is open to the atmosphere to yield ambient water-vapor measurements by infrared absorption spectroscopy. To obtain the high dynamic range for the measurements that is required for continuous water-vapor monitoring in the upper troposphere and the lower stratosphere, we used a

Georges Durry; Gerard Megie

2000-01-01

408

In Situ Measurements of H 2 O From a Stratospheric Balloon by Diode Laser Direct-Differential Absorption Spectroscopy at 1.39 um  

NASA Astrophysics Data System (ADS)

A distributed-feedback InGaAs laser diode emitting near 1.393 m is used in conjunction with an optical multipass cell that is open to the atmosphere to yield ambient water-vapor measurements by infrared absorption spectroscopy. To obtain the high dynamic range for the measurements that is required for continuous water-vapor monitoring in the upper troposphere and the lower stratosphere, we used a simple circuit that combined differential and direct detection. Furthermore, the laser emission wavelength was tuned to balance the steep decrease in H2 O concentration with altitude by sweeping molecular transitions of stronger line strengths. The technique was implemented by use of the Spectrom tre Diodes Laser Accordables (SDLA), a tunable diode laser spectrometer operated from a stratospheric balloon. Absorption spectra of H2 O in the 5 -30-km altitude range obtained at 1-s intervals during recent balloon flights are reported. Water-vapor mixing ratios were retrieved from the absorption spectra by a fit to the full molecular line shape in conjunction with in situ pressure and temperature measurements, with a precision error ranging from 5% to 10%.

Durry, Georges; Megie, Gerard

2000-10-01

409

Caxingo - um modelo promissor para integracao de acampamentos de obras hidreletricas as comunidades locais. (Caxingo - a promising model for integrating the hydroelectric work camps to the site communities).  

National Technical Information Service (NTIS)

The social and economical impacts caused by the hydroelectric work camps in the sites where the hydroelectric will be constructed are studied, analysing the great supply of works when the hydroelectric is been constructed face to the reduction one when th...

A. M. Luna A. A. Falcao

1989-01-01

410

A Baroclinic Model of Two Layers for Use in Numerical Weather Forecasting Um Modelo Baroclinico de Duas Camdas Para USO Em Previsao Numerica de Tempo.  

National Technical Information Service (NTIS)

A primitive equation limited area baroclinic model is discussed. The primitive equations, in the flux form, are written in sigma coordinate form for a two layer atmospheric model. This is to be the first multilevel model to be tested systematically in ord...

R. P. Dossantos Y. Yamazaki M. A. M. Lemes P. Satyamurty S. H. Franchito

1982-01-01

411

Preferência musical, atitudes e comportamentos anti-sociais entre estudantes adolescentes: um estudo correlacional1 Music preference, attitudes and antisocial behaviors among adolescent students: a correlational study  

Microsoft Academic Search

As there are not many studies about musical preferences as an antisocial behavior understanding method , this study aimed to raise possible relation among this construct and deviant behaviors, considering also the attitudes toward marijuana use. This sample was composed by 548 high school students from public (46.4%) and private (53.6%) schools, most of them female (54.9%). They had answered

Carlos Eduardo PIMENTEL; Valdiney Veloso GOUVEIA; Tatiana Cristina VASCONCELOS

412

Gastrópodes e outros invertebrados do sedimento e associados à macrófita Eichhornia crassipes de um açude hipertrófico do semi-árido paraibano  

Microsoft Academic Search

realizadas coletas bimestrais do sedimento (draga Van Veen, 400cm 2 ) e da planta (puçá com malha de 500µm), no período de julho\\/1998 a novembro\\/1999 e concomitantemente foram medidas as variáveis ambientais. Os gastrópodes destacam-se pela ocorrência e dominância, sendo registradas sete espécies pertencentes a seis famílias distintas. Melanoides tuberculata foi a espécie dominante em ambos os substratos (sedimento e

Francisco José Pegado Abílio; Romualdo Lunguinho Leite; Thiago Leite de Melo Ruffo

413

Moralidade e Homicídio: Um Estudo sobre a Motivação do Transgressor Morality and Homicide: A Study on the Motivation of the Transgressor  

Microsoft Academic Search

Resumo Investigamos os juízos de representação da realidade (JRR) e de valor moral (JVM) de 20 homens homicidas (30 a 49 anos), acerca da razão do crime, à época do homicídio e no momento atual. Realizamos entrevistas individuais e verificamos que: o JRR mais apontado, no presente e no passado, foi a agressão física sofrida, justificada no presente principalmente pelo

Luciana Souza Borges; Heloisa Moulin de Alencar

414

High-Efficiency On-Line Solid-Phase Extraction Coupling to 15-150 um I.D. Column Liquid Chromatography for Proteomic Analysis  

SciTech Connect

Flexible manipulation of various properties of proteomic samples is important for proteomic analyses, but it has been little explored for newly developed approaches based on liquid chromatography (LC) in combination with mass spectrometry (MS). With miniaturization of the LC column inner diameter dimensions (required for improving the analysis sensitivity), this issue becomes more challenging due to the small flow rates and the increasing effects of extra column volume on the separation quality and its use for resolving complex proteomic mixtures. In this study, we used commercial switching valves (150-mm channels) to implement the on-line coupling of capillary LC columns with relatively large solid phase extraction (SPE) columns operated at 10,000 psi. With optimized column connections, switching modes, and SPE column dimensions, high-efficiency on-line SPE-capillary and nanoscale LC separations were obtained with peak capacities of~1000 for capillaries having inner diameters between 15 to 150 mm. The on-line coupled SPE columns increased the sample processing capabilities by~400-fold for sample solution volume and~10-fold for sample mass. The proteomic applications of this on-line SPE-capillary LC system were evaluated for analysis of both soluble and membrane protein tryptic digests. Used with an ion trap tandem MS we could typically identify 1100-1500 peptides for analyses in a single 5-hour run. Peptides extracted on the SPE column and eluted from the LC column covered a hydrophilicity/hydrophobicity range that include an estimated~98% of all the tryptic peptides. The present implementation also facilitates automation and enables use of both disposable SPE columns and electrospray emitters, providing a robust basis for routine proteomic analyses.

Shen, Yufeng (BATTELLE (PACIFIC NW LAB)); Moore, Ronald J. (BATTELLE (PACIFIC NW LAB)); Zhao, Rui (BATTELLE (PACIFIC NW LAB)); Blonder, Josip (BATTELLE (PACIFIC NW LAB)); Auberry, Deanna L. (BATTELLE (PACIFIC NW LAB)); Masselon, Christophe D. (BATTELLE (PACIFIC NW LAB)); Pasa Tolic, Ljiljana (BATTELLE (PACIFIC NW LAB)); Hixson, Kim K. (BATTELLE (PACIFIC NW LAB)); Auberry, Kenneth J. (BATTELLE (PACIFIC NW LAB)); Smith, Richard D. (BATTELLE (PACIFIC NW LAB))

2003-07-15

415

Construcao de um girotron de 35 GHz e de 100 kW. (Construction of a 35 GHz 100 kW gyrotron).  

National Technical Information Service (NTIS)

In this work a description of a 35 GHz 100 kW gyrocon is described which is under construction at the National Space Research Institute Plasma Laboratory. Project conceptual aspects are emphasized, specifically high current density thermionic cathodes, hi...

Y. Aso J. J. Barroso P. J. Castro R. A. Correa G. O. Ludwing

1989-01-01

416

Um Estudo das Funcoes de Similaridade DA Camada Limite Planetaria. Parte 2: Resultados (Study of the Functions of Similarity of the Planetary Boundary Layer. Part 2. Results).  

National Technical Information Service (NTIS)

Micrometeorological data obtained during atmospheric boundary layer testing over tropical savannah land in Koorin, Australia are used to evaluate similarity functions A, B, and C of the planetary boundary layer. Different flux-profile relationships are ev...

J. C. S. Chagas Y. Viswanadham

1984-01-01

417

Um Estudo das Funcoes de Similaridade DA Camada Limite Planetaria. Parte 1: Teoria (Study of the Functions of Similarity of the Planetary Boundary Layer. Part 1. Theory).  

National Technical Information Service (NTIS)

The concept of asymptotic similarity is extended to the planetary boundary layer. Similarity functions A, B, and C of the planetary boundary layer are discussed using Rossby-number similarity theory. Simplified theoretical expressions of functions A, B, a...

Y. Viswanadham J. C. S. Chagas

1984-01-01

418

TVI: Um Modelo Numerico Para Estimativa Global DA Fitomassa DOS Cerrados Brasileiros (TVI: A Mathematical Model for Global Estimation of Brazilian Cerrado Phytomass).  

National Technical Information Service (NTIS)

The main objective is to discuss the Transformed Vegetation Index (TVI) potentialities to estimate the cerrado phytomass. The ground and remote sensing data (thematic mapper/LANDSAT-5) were gathered on three selected areas: Roncador Ecological Reserve (IB...

J. R. Dossantos

1989-01-01

419

Diferenças sexuais no desenvolvimento da preocupação moral por outras pessoas: um estudo empírico da expressão de emoções morais em crianças1  

Microsoft Academic Search

This study investigated gender and age differences in children's feelings of guilt and personal responsibility towards other people's distress. Forty-eight children, aged between seven and eleven years, were randomly recruited from a state school in Kent, England. Children were presented with sets of cartoon stories depicting a variety of open-ended moral dilemmas. They were then asked to recount the story

Heliane de Almeida; Lins Leitão

420

O processo de mudança em um hospital de Belo Horizonte: a visão da enfermeira-gerente  

Microsoft Academic Search

Aiming at analizing manager-nurses’ perceptions and wits as to processes of structural and managerial changes in a hospital organization this work was written. It is a case study- qualitative approach- carried out in a extra-sized charity hospital in Belo Horizonte. Data were collected through semi-structured interviews with 10 manager-nurses, submitted to analisis of content. According to the results obtained it

Maria Jose Menezes Brito; Marilia Alves

2003-01-01

421

Application of top-down CD-SEM metrology in measuring wafers with resist film thickness of 24 um with various sidewall profiles  

NASA Astrophysics Data System (ADS)

An automated top-down CD-SEM technique, complimenting the existing high angle tilt SEM method has been developed for measuring features printed at a film thickness of 24 microns. Measurements of resist linewidth versus exposure dose were made using a KLA 8100 top-down CD-SEM. The advantage of this CD-SEM is the automated collection of a large statistical pool of data and the ability to determine the linewidth independently of operator, accurately and consistently. The technique has been applied to AZ P4000 and AZ 9000 photoresist thick films through and beyond their exposure latitude. Maintaining a sharp sidewall profile of photoresist while supporting high aspect ratios is ideal for magneto-resistive and inductive thin film recording head coil plating and many other mission-critical applications. Also a fast and non-destructive thin film recording head coil plating and many other mission-critical applications. Also a fast and non-destructive metrology technique is desired and preferred to support future more costly and larger substrates. Results are reported for 10 and 6 micron reticle linesizes, respectively, at a film thickness of 24 microns using the AZ P4620 and AZ 9262 positive photoresist over bare silicon wafers. Wafers were exposed using an Ultratech Ultrastep Stepper model 1500 system and then developed by AZ 400 K inorganic developer. Exposure dose- array fields were measured first on the top-down KLA CD-SEM and then coated and re-measured on a Hitachi scanning electron microscope with 60 degrees-tilt capability. The importance of knowledge of resist profile and choosing the proper metrology tool is discussed. Linewidth values were compared with result from the standard tilt microscope reading method. Agreement to within 10 percent is noted for profiles corresponding to most exposure doses. Profiles for higher, over-exposed fields resemble a 'coke bottle' and linewidth for bottom of resist is inferred by extrapolation based on the prior correlation found between the two SEMs. The AZ 9262 resist line features showed a smaller 'coke bottle' profile at higher doses than AZ P4620 line features. Further work is planned for other positive resists with non- traditional profiles on unconventional substrates.

Dixit, Sunit S.; Liu, Ying; Azordegan, Amir R.

1999-06-01

422

Evaluation of Anisotropic, Ionogenic Membranes (Diaflo(Trademark) UM-Series) for Selective Removal of Divalent Cations and Anions from Brackish Water by Reverse Osmosis.  

National Technical Information Service (NTIS)

A series of asymmetric membranes made from a polyelectrolyte complex resin has been evaluated by reverse osmosis tests for the selective removal of divalent ions from brackish waters. Three different types of membranes were studied. All three membranes we...

H. Shathmann R. A. Cross T. R. Rich B. E. Carroll

1973-01-01

423

Confusion about a little observatory: the history of the first high school observatory (German Title: Verwirrung um eine kleine Sternwarte: Die Geschichte der ersten Chemnitzer Schulsternwarte )  

NASA Astrophysics Data System (ADS)

By means of a small watercolor, painted by a musicologist, the existence of the highschool observatory of Chemnitz was rediscovered. The small observatory was build in 1893 by means of funds and a donation: after WW I it was also used for popular education. During Nazi times, the observatory fell into neglect, and the mechanical damage made it impossible to put it back into operation after WW II The building was torn down in 1964 and forgotten.

Pfitzner, Elvira

424

Rompendo o silêncio e suas barreiras: um inquérito domiciliar sobre a violência doméstica contra idosos em área de abrangência do Programa Médico de Família de Niterói  

Microsoft Academic Search

The objective of this paper was to study the prev- alence of domestic physical violence against the elderly in an area covered by the Family Health Program in Niterói, Rio de Janeiro State, Brazil. Using a household survey, 322 subjects 60 years or older were randomly selected from the cen- sus of seniors assigned to six health teams. Vio- lence

Claudia Leite de Moraes; Paulo Cavalcante Apratto Júnior; Michael Eduardo Reichenheim

425

Detecao, Aquisicao e Demodulacao de Sinais em um Sistema de Comunicacao Comacesso Aleatorio (Detection, Acquisition and Signal Demodulation in a Communication System with Random Access).  

National Technical Information Service (NTIS)

The development of a signal processor for the Data Collecting System of the first Brazilian Complete Space Mission is presented. The signals from the data collecting platforms are random both in time and frequency, and are spread over a band of 24 kHz. Th...

L. C. Pacolasobrinho

1988-01-01

426

Thulium:YAG VapoEnucleation of the prostate in large glands: a prospective comparison using 70- and 120-W 2-um lasers  

PubMed Central

This study compared the efficacy of 70- and 120-w 2-µm thulium:YAG VapoEnucleation of the prostate (ThuVEP) for patients with benign prostatic obstruction (BPO). A prospective analysis of 84 patients with symptomatic BPO and prostatic enlargement (?60 ml) who underwent either 70-w (n=44) or 120-w ThuVEP (n=40) non-randomly was carried out. Patient demographics and perioperative and 12-month follow-up data were analysed. The mean prostate volume was 79.90±27.49 ml in patients who had received 70-w ThuVEP, which was less than in those who had received 120-w ThuVEP (88.53±25.10; P=0.033). The mean enucleation (resected weight/laser time, 2.16±1.21 g min?1 vs. 1.23±0.60 g min?1; P=0.013), operation efficiency (resected weight/total operation time, 0.76±0.35 g min?1 vs. 0.42±0.27 g min?1; P=0.000) and percentage of resected tissue (66.93%±22.79% vs. 45.41%±23.33% P=0.000) were higher with 120-w treatment compared to 70-w ThuVEP. One patient (1.2% of total patients) (in the 120-w group) required a blood transfusion postoperatively. Sixty-one patients (73%) were available for review at the 12-month follow-up time point. The quality of life (QoL), International Prostate Symptom Score (IPSS), maximum urinary flow rate (Qmax), postvoiding residual urine (PVR) and prostate volume improved significantly after treatment (P?0.035) and were not significantly different between those treated with the different devices (70- and 120-w). The median prostate volume reduction was 81.70% and 82.19% with 70- and 120-w ThuVEP, respectively. The incidence of complications was low and did not differ between groups treated with the different devices. Two patients (2.4%) (one per group) had a bladder neck contracture at the follow-up. ThuVEP is a safe and efficacious procedure for the treatment of symptomatic BPO. The incidence of complications was low with both devices. The 120-w thulium:YAG device enhances the effectiveness of ThuVEP with regard to the percentage of resected tissue and the enucleation/operation efficiency.

Netsch, Christopher; Bach, Thorsten; Herrmann, Thomas RW; Gross, Andreas J

2012-01-01

427

Suicidal ideation among students enrolled in healthcare training programs: a cross-sectional study Ideação suicida entre estudantes da área da saúde: um estudo transversal  

Microsoft Academic Search

Objective: We aimed to assess the presence of suicidal ideation, depressive symptoms and symptoms of hopelessness in three healthcare training programs. Method: The study's population comprised all students enrolled at the Medical School of the Fundação do ABC, Brazil, from 2006 to 2007 compared to students enrolled in nursing and pharmacy programs. We applied the Beck Scale for Suicidal Ideation,

Clóvis Alexandrino-Silva; Maira Lazarini; Guimarães Pereira; Carlos Bustamante; André Corrêa; Toledo Ferraz; Sergio Baldassin; Arthur Guerra de Andrade; Tânia Corrêa de Toledo; Ferraz Alves

2009-01-01

428

A EVASÃO DOS ALUNOS DAS ACADEMIAS: UM ESTUDO DE CASO NO CENTRO INTEGRADO DE ESTÉTICA E ATIVIDADE FÍSICA - CIEAF, NA CIDADE DE CAICÓ-RN  

Microsoft Academic Search

The physical activity is a form to more improve each time the quality of life of the people, then the gym is synonymous of guided physical activity, serching to after for its practioners a service where at can, in the possible measure do, to take care of its expectations, and this study it had the objective to discover the reasons

Cristina Lúcia; Fernandes A. Albuquerque

429

3-12-um images of HD44179 and M42: spectral differencing as a mid-infrared astronomical image enhancement technique  

NASA Astrophysics Data System (ADS)

NASA Ames Research Center and Lick Observatory have jointly developed two prototype infrared camera for astronomical imaging. The new cameras have been built using Amber Engineering Inc. 128 X 128 SiGa and InSb focal plane arrays. We report observations of the BN-KL source complex in M42 and HD44179 which are used as a demonstration of the cameras' performance when used as narrow band spectral images. The images have a dynamic range in excess of 10(superscript 3). The high signal to noise ratio and linearity of the images are used to demonstrate the power of spectral differencing as a tool for astronomical image enhancement at mid infrared wavelengths. The observations were made over a range of wavelengths 3.1 - 3.3 micrometers and 8.4 - 11.5 microns in and out of the silicate absorption band, and in the PAH emission bands at 3.3 micrometers and 11.3 micrometers using approximately 2% spectral resolution. Bell and Crisp, 1991, have reported spatial resolution enhancement of images for the surface of Mars by division of multispectral images in and out of the H(subscript 2)O absorption feature at 3 micrometers . We find that a similar image processing technique using normalized image differencing can be used in the 10 micrometers silicate absorption feature and PAH emission bands to improve the contrast in mid-infrared astronomical images. This technique is expected to be applicable to imaging of galactic nuclei and other astronomical objects as well as embedded stellar infrared sources.

Rank, David M.; Temi, Pasquale; Bregman, Jesse D.

1993-10-01

430

Acid-breakable-resin-based chemical amplification positive resist for 0.1-um-rule reticle fabrication: design and lithographic performance  

NASA Astrophysics Data System (ADS)

We have designed a new chemical amplification (CA) positive resist for 0.1micrometers reticle fabrication. This positive resist consists of an acid-generator, an acid-diffusion controller, and an acid-breakable (AB) resin that can be converted to initial polyphenol units by an acid-catalyzed reaction. In the exposed region, main-chain scission of the AB resin matrix produces nearly mono-dispersed fragments (the polyphenol). This complete fragmentation results in an extremely high dissolution rate with an aqueous-base developer (tetramethylammonium hydroxide: 2.38 wt%). The AB resin-based resist enabled fabrication of scum free 0.15micrometers line-and-space patterns on a CrOx plate by using a 50-kV electron-beam reticle writer (HL series). The line- edge roughness of patterns delineated by this resist (<10 nm) was less than half that for previously developed novolak-resin-based CA resists (RE series:>30nm).

Migitaka, Sonoko; Arai, Tadashi; Sakamizu, Toshio; Kasuya, Kei; Hashimoto, Michiaki; Shiraishi, Hiroshi

2001-09-01

431

1.2-um GaInAs\\/GaAs lasers: are they useful for high-capacity single-mode fiber datacom?  

Microsoft Academic Search

Gigabit\\/s-LANs with 0.85 micrometers vertical cavity surface emitting lasers (VCSELs) are now going into the market. But, their link length is limited to be shorter than 500 m due to modal dispersion of employed multi-mode fibers and various modal problems should be considered in system design. The next step will be to develop long wavelength VCSELs matching to a single

Fumio Koyama; Dieter Schlenker; Tomoyuki Miyamoto; Zibiao Chen; Kenichi Iga

1999-01-01

432

Clinical application of a new 0.63- to 0.65-um pulse diode laser in treating ear, throat, and nose diseases in adults and children  

NASA Astrophysics Data System (ADS)

An investigation was made of applying a pulsed diode laser emitting at the wavelengths of 0.63 to 0.65 micrometers to treat various otolaryngological diseases, such as rhinosinusitis, acute rhinitis, vasomotor rhinitis, allergic rhinitis, the illness of the lymphoid ring, adenoiditis, chronic tonsillitis, pharyngitis, and catarrhal and suppurative otitis. The therapeutic effect produced by the pulsed diode laser was compared with that of conventional therapeutic lasers. It was found that the pulsed low-intensity laser radiation in the red spectrum region offered a number of advantages over conventional laser therapeutic techniques.

Nasedkin, Alexy N.; Pletnev, A. S.

2001-04-01

433

Reticle inspection system using DUV wavelength and new alogorithm platform for advanced reticle inspection for 0.13-um technology node  

NASA Astrophysics Data System (ADS)

KLA-Tencor has developed a fourth-generation reticle inspection system, the KLA-Tencor 570, using DUV imaging to detect 100-nm defects on advanced OPC and PSM reticles for the 0.13 micron technology node production and 0.10 micron technology development. This system contains innovations in optics, electronics, mechanics, algorithms, and software. The DUV wavelength of the optical system improves the resolution and thus the minimum linewidth capability. A low- noise optical system generates high-quality images to improve productivity, facilitate defect classification, and reduce operator errors. The United Inspection Computer (UIC), a high-speed scalable computational engine, renders database data to create an image of the mask for die-to- database inspections. The UIC uses the new Ultra-Performance Algorithm, which provides high detection sensitivity at high speed for D:D and D:DB inspections. UPA can handle complex structures such as advanced OPC and phase shift mask. TI places no fundamental requirement on the size of OPC features. UPA classified defects automatically. The operator can select sensitivity settings independently for each defect type. Since UPA measures the CD of every feature on the reticle, it can also make total plate quality measurements for statistical process control of mask manufacturing. A new reticle handling system reduces overhead time and allows easy loading and unloading of the reticle. This system manipulates 6-inch and 230-mm reticles with and without pellicles. A flexible adapter design allows the system to mix different reticle sizes. A new data preparation system executes on a multi-processor computer with a 64-bit operating system to minimize data preparation time. This DPS architecture allows the operator to change various inspection parameters such as pixel size, alignment points, DNIR's and rotation without the need for re-prep, thereby improving productivity and flexibility. The KLA- Tencor 570 also allows optional remote Data Prep. Test results indicate that the KLA-Tencor 570 already meets its sensitivity specifications on a Verimask VT 690 in both die- to-die and die-to-database modes.

Alles, David; Ter Beek, Paul; Juang, ShauhTeh; Wiley, James N.; Hsia, Kangmin

2000-07-01

434

Condições econômicas e institucionais do processo de inovação: proposta de um modelo sistêmico de investigação do progresso tecnológico e o desenvolvimento de inovações na indústria  

Microsoft Academic Search

This paper analyzes the dynamics of innovation in the economy. Thus, it examines the economic and social conditions involved in the technological progress and promotion of innovations. The economic structure is seen in front of the company's innovative features and the accumulation of capabilities dedicated to the innovation. The social conditions are considered in respect of the role of institutions

Ronivaldo Steingraber; Flávio Gonçalves

2009-01-01

435

Energia solar fotovoltaica: Contributo para um roadmapping do seu desenvolvimento tecnológico [Fotovoltaic solar energy: a contribute to a technological development roadmapping  

Microsoft Academic Search

The main goal for this report is to alert for the need of a continuous investment in policies that should be developed worldwide, with respect to research and development (R&D), at all levels, in photovoltaic energy. The R&D in this area leads to a strong and possible solution to the actual environmental problems. Such problems are based on the climate

Hugo Gil Silva; Marcos Afonso

2009-01-01

436

Temperaturleitfaehigkeit Reiner Fluide im Weiten Zustandsbereich um den Kritischen Punkt (Thermal Conductivity of Pure Fluids in a Large Region Around the Critical Point).  

National Technical Information Service (NTIS)

Thermal conductivity from -35 K to +50 K of 5 pure fluids is studied: sulfur hexafluoride, ethane, dinitrogen oxide, CClF3, and xenon. Data are obtained along the critical isochores and isotherms and on the binary phases curves. Light scattering and photo...

P. Jany

1986-01-01

437

Valores Psicossociais e Orientação à Dominância Social: Um Estudo Acerca do Preconceito Psychosocial Values and Social Dominance Orientation: A Study About Prejudice  

Microsoft Academic Search

The aim of this study was to analyze the relationships among prejudice and psychosocial values, by means of the orientation of social dominance, from four systems, the religious, the materialist, the post-materialist and, the hedonist. For this particular study, 205 undergraduate Psychology students were chosen from the city of João Pessoa - PB. They answered the social dominance orientation scale,

Sheyla Fernandes; Joseli Da Costa; Leoncio Camino; Roberto Mendoza

438

Hyper-numerical aperture (NA = 2.8) microscope using ? = 1.56 um femtosecond source for multi-photon imaging  

PubMed Central

A new microscope is discussed, where the scanning illumination has a numerical aperture of 2.8 with ? = 1.56 µm femtosecond fiber laser. Samples are placed or grown on a silicon substrate. Multi-photon emission is imaged in transmission on a cooled CCD. Two-photon and three-photon effects are observed from the silicon/water interface and gold nanoparticles. Images of cells, reference spheres and gold nanoparticles illustrate imaging properties of the microscope. Spectral characteristics of individual particles are achieved with a blazed transmission grating. Emission properties of differently sized gold nanoparticles are studied in detail, which indicate that their emission is a two-photon effect due continuum generation. Interestingly, spectral shape and emission power are similar for 20nm, 40nm and 60nm diameter gold nanoparticles for the cases studied.

Kim, Youngsik; Lu, Phat; Milster, Tom D.; Kieu, Khanh

2013-01-01

439

Influence of geomagnetic-ionospheric disturbances on SABER measurements of 4.3 um emission and the retrievals of kinetic temperature and carbon dioxide  

Microsoft Academic Search

The Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) experiment was launched onboard the TIMED satellite in December 2001. SABER is providing global measurements of broadband Earth infrared limb emission which are analyzed to provide vertical profiles, with approximately 2 km resolution, of kinetic temperature (Tk) and key chemical species needed to quantify the radiative and chemical energy balance

C. J. Mertens; P. G. Richards; J. R. Winick; R. H. Picard; L. J. Paxton; P. P. Wintersteiner

2004-01-01

440

Equality and Justice in Medicine: a paradigm of Uncertainty Equidade e Justiça em Medicina: um paradigma de Incerteza Equidad y Justicia en Medicina: un paradigma de Incerteza  

Microsoft Academic Search

Equity in the sense of equal access to mainline contemporary medicine is recognized as one of today's greatest challenges: economically, politically, and morally. The treatments of contemporary medicine are either unavailable or too expensive for most sick persons in the world. There is an experience of inequity and injustice which is extensive and can be turned into a motor for

James F. Drane

441

Status SociomØtrico e AvaliaÁªo de CaracterÌsticas Comportamentais: Um Estudo de CompetŒncia Social em PrØ-Escolares  

Microsoft Academic Search

This study examined the correlations between sociometric choices and preschool peersí behavioral descriptions. The appropriateness of an instrument created for the evaluation of behavioral attributes for five years old was tested, using illustrative cards to motivate participants during the task. Behavioral social characteristics evaluated were: social acceptance\\/ withdrawal, participation\\/lack of participation in schoolwork, dependence\\/independence from teacher and dominance\\/ submission. Affective

Maria de Lima Salum; Cristiana Tieppo Scala

2001-01-01

442

1.55-um optical phase-locked loop operation with large loop delays and monolithically integrated p-i-n/HBT photoreceivers  

NASA Astrophysics Data System (ADS)

The optical phase-locked loop (OPLL) provides a method of generating channel offsets for use in dense wavelength division multiplexed (WDM) systems. The development of monolithically integrated OPLLs will make their widespread application more feasible. Typical approaches to making hybrid OPLLs use either very narrow linewidth lasers or reduce the loop delay as much as possible. The use of semiconductor lasers with their moderately large linewidths has encouraged the development of very compact but inflexible loop designs. Previous designs using semiconductor lasers have avoided the use of fiber couplers to minimize loop delay. A hybrid, fiber-based system allows design, layout, and testing flexibility which is necessary in a test bed for the development of components for an integrated OPLL. In spite of the large loop delay that comes from using fiber components, we demonstrate that phase- locking can be achieved using semiconductor lasers of moderate linewidths and fiber components. We achieved a very wide hold-in range of 1.558 GHz and possible locking frequencies ranging from 100 to 20.75 GHz, both of which are among the best reported values. As the first step towards integration, a monolithically integrated p-i-n/HBT photoreceiver was successfully employed in the test bed.

Goetz, Peter G.; Eisele, Heribert; Syao, K. C.; Bhattacharya, Pallab K.

1997-01-01

443

1.55 um InAs/GaAs Quantum Dots and High Repetition Rate Quantum Dot SESAM Mode-locked Laser  

PubMed Central

High pulse repetition rate (?10?GHz) diode-pumped solid-state lasers, modelocked using semiconductor saturable absorber mirrors (SESAMs) are emerging as an enabling technology for high data rate coherent communication systems owing to their low noise and pulse-to-pulse optical phase-coherence. Quantum dot (QD) based SESAMs offer potential advantages to such laser systems in terms of reduced saturation fluence, broader bandwidth, and wavelength flexibility. Here, we describe the development of an epitaxial process for the realization of high optical quality 1.55 µm In(Ga)As QDs on GaAs substrates, their incorporation into a SESAM, and the realization of the first 10?GHz repetition rate QD-SESAM modelocked laser at 1.55 µm, exhibiting ?2?ps pulse width from an Er-doped glass oscillator (ERGO). With a high areal dot density and strong light emission, this QD structure is a very promising candidate for many other applications, such as laser diodes, optical amplifiers, non-linear and photonic crystal based devices.

Zhang, Z. Y.; Oehler, A. E. H.; Resan, B.; Kurmulis, S.; Zhou, K. J.; Wang, Q.; Mangold, M.; Suedmeyer, T.; Keller, U.; Weingarten, K. J.; Hogg, R. A.

2012-01-01

444

COMPETITIVIDADE, ESPECIALIZAÇÃO E VANTAGEM COMPARATIVA DO ESTADO DE MATO GROSSO NO MERCADO INTERNACIONAL: UM ESTUDO DE INDICADORES DE COMÉRCIO EXTERIOR NO PERÍODO 1996- 2007  

Microsoft Academic Search

Este artigo identifica os grupos de produtos do estado de Mato Grosso que exibem vantagens competitivas no comércio exterior durante o período 1996-2007. Para tanto, com base em dados da Secretaria de Comércio Exterior do Ministério da Indústria e Comércio, estimam-se indicadores de Comércio Exterior, tais como VCR (Vantagens Comparativas Reveladas), ICSC (Índice de Contribuição ao Saldo da Balança Comercial)

Paula Luciana Silva; Benedito Dias Pereira; Alexandre Magno Faria; Gerson Rodrigues Silva; Arturo Zavala Zavala

2008-01-01

445

Promoção da saúde e trabalho: um ensaio analítico Health promotion and work: an analytic essay Promoción de la Salud y del trabajo: un ensayo analítico  

Microsoft Academic Search

RESUMO Este artigo teve como propósito discutir a articulação entre promoção da saúde e trabalho, na perspectiva de aproximar as práticas em saúde do trabalhador, com o enfoque na promoção da saúde. Para tanto, discutimos a trajetória histórica da promoção da saúde e das políticas de saúde do trabalhador no Brasil, apontando suas dificuldades, limitações e perspectivas. Em seguida, analisamos

Soraya Maria de MedeirosIII

446

Efeitos de um programa de orientação de atividade física e nutricional sobre o nível de atividade física de mulheres fisicamente ativas de 50 a 72 anos de idade  

Microsoft Academic Search

Effects of an intervention program of physical activity and nutrition orientation on the physical activity level of physical- ly active women aged 50 to 72 years old The promotion of a physically active lifestyle in elderly people has been used as a strategy to promote improvement in health standards and quality of life. The objective of this study was to

Marcela Ferreira; Sandra Matsudo; Victor Matsudo; Glaucia Braggion

2005-01-01

447

The Application of Remote Sensors to a Model for Fish Mapping O Sensoriamento Remoto Aplicado a Um Modelo de Cartas de Pesca.  

National Technical Information Service (NTIS)

A methodology for the determination of the best potential fishing zones, for sardines, in the Brazilian coastal area of the southwestern tropical Atlantic Ocean, between latitudes 21 deg 45'S and 25 deg 00'S and longitudes 40 deg 50'W and 47 deg 00'W is p...

S. Maluf

1978-01-01

448

ÁREA TEMÁTICA: OPERAÇÕES PROCESSOS DE SELEÇÃO DE PROJETOS: O FUNIL DE DESENVOLVIMENTO NA INDÚSTRIA DE BRINQUEDOS GROW - UM ESTUDO DE CASO AUTORES  

Microsoft Academic Search

Nowadays, the market of toys in Brazil goes by several structural transformations in function of the strong international competition and of the high degree of the consumers' demand that stops an access to the information every time larger and they come across very varied lines of products to choose. In that scenery, the innovation of products and processes as a

LEANDRO JOSÉ MORILHAS

449

Confidencialidade, aconselhamento genético e saúde pública: um estudo de caso sobre o traço falciforme Confidentiality, genetic counseling, and public health: a case study on sickle cell trait  

Microsoft Academic Search

Sickle cell anemia is the most prevalent genetic disease in Brazil. Screening for sickle cell trait in blood donation centers has been recommended by the Brazilian government since 1976. This screening mechanism is one of most common forms of genetic screening for sickle cell disease in the country. This article is based on an ethno- graphic survey of individuals undergoing

Debora Diniz; Cristiano Guedes

450

O GOZO DA INTERPRETAÇÃO: UM ENSAIO SOBRE A CRÍTICA PSICANALÍTICA DA OBRA LITERÁRIA (The joy of the interpretation, an analysis on the psychoanalytical critique of the literary composition)  

Microsoft Academic Search

We analyzed the dynamics of the psychoanalytical method of interpretation and its use indifferenced in the literary compositions. This paper aims to examine the role of the psychoanalytical interpretation of literature, observing its vicissitudes and its relation with the power and the literary experience. Leaving of the supposed parity with the psychic life analyzed in the setting analytical and the

Leonardo Pinto de Almeida; Raul Marcel; Filgueiras Atallah

451

Effects of resist strip processing damage on the electrical characteristics of 0.8-um a-Si antifuse circuit elements  

NASA Astrophysics Data System (ADS)

Field-programmable ASICs have been implemented using a variety of programmable circuit elements, including SRAM, EPROM, E2PROM, and antifuse cells. Amorphous silicon (a-Si) antifuse cells offer greater packing densities and superior performance compared to cells based on memory elements, and they can be integrated into conventional multi-layer integrated circuits with the addition of several process modules. Despite their advantages, a potential yield issue with a-Si antifuses is that their electrical characteristics can be affected by damage from manufacturing processes. In this study, it is found that the programming voltage is reduced when a solvent-based post-resist strip solution is applied to the bottom electrode layer of TiW. Atomic-force microscopy (AFM) shows that the resist strip solution increases the micro-roughness of TiW films. It is also found that the `off-'state leakage current increases when the solution is applied to the a-Si antifuse layer. The amount of the leakage current increase is related to the amount of a-Si loss due to the strip solution.

Fujishiro, Felix; Vines, Landon; Ravindhran, K. S.; Han, Yu-Pin; Echtle, Danny; Garcia, Annette; Richardson, Brian; Weling, Milind; Hickey, James; Loh, Ying-Tsong

1994-09-01

452

Application of APCVD TEOS/ozone thin films in < 0.5-um IC fabrication: trench and intermetal dielectric isolation and gap fill  

NASA Astrophysics Data System (ADS)

Basic film and process characteristics in conjunction with electrical test results are presented showing the effect of implementing a void free oxide for both intermetal and shallow trench isolation. An integrated intermetal dielectric (IMD) process is evaluated on fully functional 0.5 micrometers BiCMOS memory circuits. The integrated process uses two different films, an oxide for gap fill deposited at atmospheric pressure (APCVD) using a TEOS/O3 chemistry, and a second oxide deposited from TEOS using plasma enhanced CVD(PETEOS) for planarization, stress management, and moisture protection. The effect of a thin PETEOS barrier between TEOS/O3 and the underlying metal is explored, and some issues concerning the integration of chemical mechanical polishing into a void free backend process flow are investigated. The suitability of undoped APCVD TEOS/O3 thin films for isolation trench fill is also characterized and described. Process variable which determine the relevant properties for trench fill are evaluated. Well-behaved MOS transistors with excellent parasitic performance were achieved using trench isolation and are reported.

West, Jeff P.; Fry, H. W.; Poon, Stephen; Boeck, B. A.; Yu, Chris C.

1993-09-01

453

Imbe ddi ng AIED i n i e TV through Broadband Use r Mode l l i ng (BbUM)  

Microsoft Academic Search

Earlier this year we were asked to offer an AIED perspective to the development of interactive educational television (ie-TV). This theme paper discusses our response to the question: what can the field of AIED offer to developers of education for the wired and wireless future with particular respect to TV? We note the changes that have taken place over the

ROSEMARY LUCKIN; BENEDICT DU BOULAY

454

PFS-MEX nadir observations at 4.3 um in the Mars atmosphere with account for non-LTE emissions  

NASA Astrophysics Data System (ADS)

Non-LTE emissions in the Mars atmosphere have been observed at different wavelength from spacecrafts and ground-based instruments. Since these features are originated at high atmospheric altitudes, most of the observations have been taken at limb (Maguire et al., 2002; Formisano et al., 2006). However, also in a nadir geometry these features are relevant, and recently, an averaged spectra obtained by co-adding 1680 single spectra taken by the Planetary Fourier Spectrometer (PFS) on board Mars Express has been successfully compared to a theoretical non-LTE model (Lopez Valverde et al., 2005). Our intent was to build upon that work by analysing in more detail the full 4.3 µm region in PFS nadir observations, characterizing not only the non-LTE emissions but also the contributions from the surface and the lower atmosphere, particularly important in the wings of this spectral band. The ultimate goal is to derive information about the lower atmosphere, the dust optical thickness and the surface albedo at these wavelengths by a proper consideration of the non-LTE contamination.

Piccialli, A.; Palomba, E.; Lopez Valverde, M. A.; Gilli, G.; Grassi, D.; D'Amore, M.; Formisano, V.

455

Etching characteristics of organic low-k dielectrics in the helicon-wave plasma etcher for 0.15-um damascene architecture  

Microsoft Academic Search

The comparative analysis of the dry etching of FLARE 2.0 and a- C:F, which represent two different depositions techniques of organic low-k polymers was investigated. In our damascene architecture, the etchings to player or hard-mask of both SIOF; SiO2 was studied. Especially, the SiOF providing lower dielectric constant than SIO2 would reduce entire effective dielectric constant. The etch rate and

Jia-Min Shieh; T. C. Wei; C. H. Liu; Shich-Chang Suen; Bau-Tong Dai

2000-01-01

456

The study of fluorine-doped silicon dioxide (FSG) films property after thermal alloy for different film deposition temperature for sub-0.18 um logic yield improvement  

Microsoft Academic Search

As feature size shrinks to the deep sub-micron regime, the RC delay of metal interconnection will increase and limit the performance of high-speed devices. To address this problem, fluorine-doped silicon dioxide (SiOF) has been introduced in advanced IMD applications. Many deposition methods have been studied, including PECVD and HDP CVD. HDP CVD was finally applied to most deep sub-micron processes

S. A. Wu; Y. K. Wang; Y. Cheng; J. K. Wang; G. C. Wang; M. H. Yo; C. T. Lee; T. Lu; S. Wang; J. Li; Chenson Lai

2000-01-01

457

Confusion about a little observatory: the history of the first high school observatory (German Title: Verwirrung um eine kleine Sternwarte: Die Geschichte der ersten Chemnitzer Schulsternwarte )  

Microsoft Academic Search

By means of a small watercolor, painted by a musicologist, the existence of the highschool observatory of Chemnitz was rediscovered. The small observatory was build in 1893 by means of funds and a donation: after WW I it was also used for popular education. During Nazi times, the observatory fell into neglect, and the mechanical damage made it impossible to

Elvira Pfitzner

2010-01-01

458

Effects of a multidisciplinary rehabilitation program for men with fibromyalgia: controlled randomized study Efeito de um programa de reabilitação multidisciplinar para homens portadores de fibromialgia: estudo aleatorizado controlado  

Microsoft Academic Search

introduction: Fibromyalgia (FM) is a chronic widespread syndrome associated to sleep disturbances, fatigue and a myriad of other symptoms. Ten percent of patients are males. gender differences related to pain perception may be explained by influences of genet - ics, metabolism, cognition, behavior, and emotions. Men with FM have less objective complaints, except for sleep disturbances and widespread pain. There

Liliana Lourenço Jorge; Luis Carlos Onoda Tomikawa; Sueli S H Jucá

2007-01-01

459

Fast and Universal HPLC Method for Determination of Permethrin in Formulations Using 1.8-um Particle-Packed Column and Performance Comparison with Other Column Types  

PubMed Central

An HPLC method has been developed for the fast separation and quantification of permethrin using C18 column packed with 1.8 µm particles. The method is specific with good resolution to degradation products and to other present components. It has acceptable validation results. The run time is 4.5 min (or may be within 1.6 min is rapid resolution mode) with an organic solvent consumption of 3.6 mL per run. The method has been applied to samples of formulations for various uses: mattress cleaner, shampoo, and veterinary powder. The performance of the applied column is compared with other common column types. The relationships between linear velocity of the mobile phase (u) and resolution factor (Rs), back-pressure (?P), and efficiency (H) are presented. The experimental data shows the advantages of 1.8-µm particle columns to be a significant reduction in solvent consumption (by factor of 4.4 and 1.5) and a reduction in run-time (by factor 4.7 and 1.5), and the weaknesses are a high back-pressure and lower efficiency. Finally, it has been shown that use of 1.8-µm particle packed columns with conventional HPLC systems is possible, but with limitations in mobile phase flow-rate.

Shishovska, Maja A.; Stefova, Marina T.

2012-01-01

460

Cannabidiol: from an inactive cannabinoid to a drug with wide spectrum of action Canabidiol: de um canabinóide inativo a uma droga com amplo espectro de ação  

Microsoft Academic Search

Objective: The aim of this review is to describe the historical development of research on cannabidiol. Method: This review was carried out on reports drawn from Medline, Web of Science and SciELO. Discussion: After the elucidation of the chemical structure of cannabidiol in 1963, the initial studies showed that cannabidiol was unable to mimic the effects of Cannabis. In the

Antonio Waldo Zuardi

2008-01-01

461

Efeito tópico de iodo-povidona 0,5% comparado com natamicina 5% em ceratites fúngicas causadas por Fusarium solani em um modelo animal de coelhos: estudo piloto  

Microsoft Academic Search

Purpose: To evaluate the efficacy of topical administration of 0.5% povidone-iodine in experimental Fusarium solani keratitis in rabbits. Methods: Fungal keratitis caused by Fusarium solani was induced in the right eye of 24 New Zealand rabbits. The rabbits were randomly divided into 3 different treatment groups: Group I (povidone-iodine) - treated with topical 0.5% povidone-iodine; Group II (natamycin) - treated

Lauro Augusto de Oliveira; Thales Takeo Takata; Olga Fischman Gompertz; Luciene Barbosa de Sous; Mark J. Mannis

462

BIBGTR: um conjunto de bibliotecas de dados nucleares para os codigos Usimug e Anisn. (BIBGTR: nuclear data libraries for the programs Unimug and Anisn).  

National Technical Information Service (NTIS)

Nuclear data libraries generable by the NJOY for the programs UNIMUG and ANISN, using evaluated data from ENDF/B-IV and ENDF/B-V are described. These libraries will be used by Radioisotope Thermoelectric Generators Project of Instituto de Estudos Avancado...

S. Ono A. D. Caldeira

1989-01-01

463

Optically injection mode-locked 1.3-um semiconductor optical amplifier fiber ring laser by using gain-switching single-mode FPLD  

NASA Astrophysics Data System (ADS)

We demonstrate a novel approach for generating a stable and low polarization-sensitive mode-locked fiber ring laser by using a low-cost Fabry-Perot laser diode (FPLD) as both the intracavity mode-locker and the band-pass filter. The FPLD pulses is seeded into a close-loop semiconductor optical amplifier (SOA) based fiber ring laser for harmonic and rational harmonic mode-locking operation. The SOA biased at 65 mA and 18 degree(s)C combines with an intracavity optically feedback-injected 1.3 micrometers FPLD biased at 9.4 mA (below threshold current) and 23 degree(s)C via some optical couplers. Picosecond optical pulse with side-mode suppressing ratio of greater than 12 dB are obtained, the measured lindwidth at 3-dB and 10-dB decay are observed to maintain at about 0.04 nm and 0.14 nm, respectively. Narrow-linewidth operation of the SOAFL with optical pulsewidth of 42.1 ps and wavelength tuning range of about 10 nm at repetition rate of 13 GHz has been demonstrated. The optically injection mode-locking scheme also has shown to exhibit low supermode noise, higher average output power and good stability. The optical output power under harmonic mode-locked scheme is about 297 (mu) W. The fluctuation in output power, the SSB phase noise at 1 kHz offset frequency, and the calculated rms timing jitter within the integral region from 0 Hz to 1 KHz are +/- 2.5 (mu) W, -82.4 dBc/Hz, and 1.0 ps, respectively.

Hsueh, Pai-Shen; Lee, Shih-Chang; Lin, Gong-Ru

2002-09-01

464

Analise DA Geometria Orbital E Manutencao DA Orbita de Um Satelite de Observacao DA Terra (Analysis of Orbital Geometry and Orbit Maintenance of an Earth Observation Satellite).  

National Technical Information Service (NTIS)

An introduction to a recurring sun-synchronous orbit is given so as to choose adequately an orbit for Earth monitoring satellites. An analysis of choice criteria is made taking into account the hardware of the satellite and the mission constraints. For th...

V. Matosdemedeiros

1987-01-01

465

Band structure aspects of materials with localizing f-orbitals. [UM/sub 3/; CeM/sub 3/; NpSn/sub 3/  

SciTech Connect

In those materials where the f-states are hybridized, a band structure provides a reasonable description of the ground state. This is amply demonstrated by the successful determination of the Fermi surfaces of CeSn/sub 3/, URh/sub 3/, Ulr/sub 3/, and UGe/sub 3/. But when the f-states become more local, inadequacies of the functionals employed yield incomplete localization. Thus, to obtain a good description of the Fermi surface for high field ferromagnetic CeSb, the local character of the f-orbitals is artifically forced to produce the standard rare earth model. When dealing with excited states, the ground state band structure provides only part of the story. Even thermal excitations can provide significant departures from the ground state as evidenced by the large enhancements found for some materials. The series USi/sub 3/, UGe/sub 3/, and USn/sub 3/ (together with CeSn/sub 3/) demonstrate the effect very well. NpSn/sub 3/ provides a useful counter example demonstrating that such enhancements need not be a universal property of localization.

Koelling, D.D.; Norman, M.R.; Arko, A.J.

1986-06-01

466

Leo de Ball and his contributions to international astronomical projects around 1900. (German Title: Leo de Ball und seine Beiträge zu internationalen Astronomieprojekten um 1900)  

NASA Astrophysics Data System (ADS)

From 1891 until 1916 Leo de Ball was the director of the Kuffner Observatory in Vienna. Born in Germany in 1853, he studied at Berlin and Bonn. After having received his doctorate in 1877, he became assistant at Gotha. From 1881 to 1882 he worked at the observatory in Bothkamp, where he discovered the minor planet ``Athamantis''. In 1883, he followed an invitation to the Ougrée Observatory in Belgium. Here he published some quite remarkable papers on the mass of Saturn and was also introduced to meridian circle astronomy. In 1891 he received a call to Moriz von Kuffner's observatory in Vienna. During that time the Astronomische Gesellschaft called for an extension of the ``Zonenunternehmen'' to southern declinations from -2 ° to -23°. De Ball took over the zone -5°50´ to -10°50´. This work occupied most of his time from 1892 to 1896. In 1900 Leo de Ball initiated a project for determining relative parallaxes of 252 stars in collaboration with four observatories. Although the project was only partly executed, Leo de Ball published relative parallaxes of 16 stars, observed from 1901 to 1907 with the Vienna heliometer.

Habison, Peter

467

Growth by liquid phase epitaxy and low-threshold laser oscillation at 2.012 um of a Tm:YAG waveguide laser  

NASA Astrophysics Data System (ADS)

We report the growth by liquid phase epitaxy and laser operation at 2.012 micrometers of Tm:YAG planar waveguides with various concentrations (4 to 10 at %), lengths (3,4 mm) and active layer thicknesses (8 to 30 micrometers ). The pumping source was 1 W GaAlAs SDL diode emitting at 785 nm and the cavity consisted of 2 plane mirrors butted to the waveguide endfaces. Initial results have been obtained with a 6% doped, 4 mm long and 14.6 micrometers thick, Tm:YAG epilayer: Thresholds occurred at respectively 60 mW and 300 mW of incident power (48 mW and 136 mW of absorbed power taking in account pump feedback by the output couplers) for output mirrors transmissions of 2% and 12% respectively. Slope efficiencies of 32% and 48% with respect to absorbed power have been achieved with these output transmissions. With Ti:sapphire pumping an using 1.8% output coupling, laser threshold as low as approximately equals 10 mW and slop efficiencies of approximately equals 30% have been obtained in a range of different Tm:YAG waveguides. This performance is comparable to the best results published until now for bulk crystals.

Borel, Corinne; Rameix, Armelle; Thony, Philippe; Ferrand, B.; Shepherd, David P.; Large, Alan C.; Warburton, Toby J.; Tropper, Anne C.; Hanna, David C.

1995-04-01

468

COMUNICAÇÃO ADUBAÇÃO COM SILÍCIO VIA FOLIAR NA ACLIMA TIZAÇÃO DE UM HÍBRIDO DE ORQUÍDEA Mineral nutrition with silicon by foliar application in orchid hybrid acclimatization  

Microsoft Academic Search

3 e contendo como substrato casca de arroz carbonizada. Foram avaliados os efeitos das concentrações (0; 0,5; 1,0; e 2,0 mg L -1 ) e fontes de silício: silicato de sódio (SS) e Supa Potássio ® (SP) via foliar e a mistura 1:1 aplicada via foliar. Após oito meses do transplantio foram avaliadas as variáveis número de folhas, comprimento da

Joyce Dória; Rodrigues Soares; Moacir Pasqual; Filipe Almendagna Rodrigues; Fabíola Villa; Janice Guedes de Carvalho

469

O relacionamento familiar após a mastectomia: um enfoque no modo de interdependência de Roy* Family relationship after the mastectomy: an approach using Roy's interdependence mode  

Microsoft Academic Search

This is a descriptive study aiming to analyze the family life after the mastectomy, to know interdependency relationships and to identify day by day alterations. Fifteen relatives were interviewed in the period between July and August 2002, with the agreement of the woman and of her relatives. The data were organized based on content analysis Sister Callista Roy's theory, specifying

Antônio Bezerra; Elizabeth Mesquita Melo; Raimunda Magalhães da Silva; Ana Fátima; Carvalho Fernandes

470

Habilidades sociais das mães e envolvimento com os filhos: um estudo correlacional Mothers' social skills and their involvement with children: a correlacional study  

Microsoft Academic Search

This study aimed to identify and to analyze the mother's social skills repertoire and their involvement with their children. Twenty-two mothers, whose children were in the first grade, participated in this study. They completed the Mother's Evaluation of Family Interaction Quality questionnaire and Social Skills Inventory (IHS-Del-Prette). The participants reported good social skills repertoire , which was positively correlated to

Fabiana CIA; Camila de Sousa; Zilda Aparecida; Pereira DEL PRETTE; Almir DEL PRETTE

471

Infrared detectors and lasers operating in the 3-12 um range using band-gap engineered structures with Type II band-gap alignment  

Microsoft Academic Search

The Type II broken band-gap alignment in semiconductor structures wherein the conduction band minimum is in one semiconductor (e.g., InAs) and the valence band maximum is in another (e.g., GaInSb) offers certain unique advantages which can be utilized to realize band-gap engineered novel quantum electro-optic devices such as lasers and detectors. The advantages of the type II structures include reduced

Venkataraman Swaminathan; John W. Little; Richard L. Tober

472

Aplicação de um sistema baseado em conhecimento e lógica fuzzy para o mapeamento da fragilidade ambiental em relação às atividades florestais  

Microsoft Academic Search

The objective of this study was to determine and map the levels of environmental fragility considering the physical aspects of soil and implementation of silvicultural practices in an area with planting of Pinus taeda L. The analysis included two groups of variables: \\

Lorena Stolle

473

Crystal-free and low-flow-angle ILD by using in situ SACVD\\/PE BPSG for 0.5-um application  

Microsoft Academic Search

As the technology pushes down to half-micron or below, a low flow angle BPSG film for pre- metal dielectric (PMD) becomes necessary. With high BP concentration BPSG, for example 4 X 6, low flow angle can be achieved after proper reflow. The drawback is that, frequently, BPSG crystal appears at smaller poly spacing. The combined sub-atmosphere chemical vapor deposition (SACVD)

Hung-Chi Yen; Ben-Yih Jin; Cliff Wong; Peter Chow; Daniel Yen; Joseph Hu; Joe S. Su; Jean Wang

1994-01-01

474

Triple-level metal process for high-performance and high-density 0.6-um/5-V application-specific integrated circuits  

NASA Astrophysics Data System (ADS)

In this paper a triple level metal interconnect process for a commercially available high density, high performance 0.6 micrometers /5V CMOS technology is described. Poly gates of 0.6 micrometers (Leff equals 0.45 micrometers ) were fabricated and then planarized by BPSG reflow and resist etch back. Blanket W and etch back were used to fill high aspect ratio contacts and vias with TiN as the nucleation barrier. Low temperature RTA was performed after Ti/TiN deposition, and rf etch was performed for contacts and vias respectively, prior to Ti/TiN depositing, to achieve reliable contacts and via resistance. Stable contacts/via resistance down to 0.7 micrometers with good junction integrity/stackability and negative metal enclosure have been demonstrated and been physically characterized by HTEM. TiN/Al-Cu/TiN was used for M1/M2/M3 interconnection and TEOS/resist etch back/TEOS refill was used for ILD1 and ILD2. A TEOS/nitride sandwich was used for final passivation. A satisfactory yield has been achieved on 2.9 cm2 die size with 0.6 million usable gates.

Prasad, Sharad; Bruner, M.; Chen, Fusen E.; Gandhi, Mitan; Lu, Y. C.; Kao, Chiyi Y.; Yang, Steve; Hata, William

1993-09-01

475

Crystal-free and low-flow-angle ILD by using in situ SACVD/PE BPSG for 0.5-um application  

NASA Astrophysics Data System (ADS)

As the technology pushes down to half-micron or below, a low flow angle BPSG film for pre- metal dielectric (PMD) becomes necessary. With high BP concentration BPSG, for example 4 X 6, low flow angle can be achieved after proper reflow. The drawback is that, frequently, BPSG crystal appears at smaller poly spacing. The combined sub-atmosphere chemical vapor deposition (SACVD) and BPSG films through in-situ deposition in applied materials P-5000D system was implemented to not only improve reflow angle but also suppress the crystal formation at any poly space. A crystal-free with 11 degree(s) flow angle PMD was achieved by using 4KA SACVD and 5KA BPSG over 6000A poly lines. A detailed SACVD/BPSG process and the comparison of BPSG reflow characterization with and without SACVD are presented.

Yen, Hung-Chi; Jin, Ben-Yih; Wong, Cliff; Chow, Peter; Yen, Daniel; Hu, Joseph; Su, Joe S.; Wang, Jean

1994-09-01

476

Detection of carbon monoxide from biological tissue using difference frequency generation in periodically poled lithium niobate near 4.6 um  

Microsoft Academic Search

A mid-IR gas sensor using difference frequency generation was developed to measure trace levels of biological carbon monoxide (CO). A periodically-poled lithium niobate crystal is pumped by a continuous wave Ti:Sapphire laser and a compact diode pumped Nd:YAG laser operating at 864.86 and 1064.6 nm, respectively. The strong IR transition R(6) at 2169.2 cm-1 is chosen for convenient CO detection

Yuji Morimoto; Jens Klattenhoff; William Durante; David G. Lancaster; Robert F. Curl; Frank K. Tittel

1999-01-01

477

Suite intrusiva Maruim: um batolito calcialcalino zonado do escudo catarinense. (Maurim intrusive suite: a calc-alkacic batholite zoned of catarinense shield).  

National Technical Information Service (NTIS)

The geological survey of the Florianopolis Sheet (SG.22-Z-D-V) identified and characterized a calc-alkacic multi-intrusive and polydiapiric suite that occurs as a granitic batholite roughly concentric in texture and composition. This co-magmatic plutonic ...

W. Wildner G. E. Ramgrab L. F. P. Zanini P. M. Branco E. Camozzato

1990-01-01

478

CUIDADOS COM O PACIENTE QUE UTILIZA O CATETER DE HICKMAN- BROVIAC: UM ESTUDO DE CASO* CARING THE PATIENT WITH HICKMAN-BROVIAC CATHETER: A CASE STUDY  

Microsoft Academic Search

UNI TERMO S: Ca te te r de Hi ck ma n -Br ovi a c. Equ i pe de en fe r ma ge m. Cu id a d o d e e n fer ma ge m. ABSTRACT. Caring the patient with Hickman-Broviac catheter: a case study. The authors make a shori literature review about the Hickman-Broviac catheter

Luciana Monteiro Mendes Martins; Alessandra Rocha Lima

479

EFEITOS DE UM PROGRAMA DE ATIVIDADE FÍSICA DE BAIXA A MODERADA INTENSIDADE NA ÁGUA NO DESEMPENHO FÍSICO E CONTROLE DO NÍVEL DE ESTRESSE EM ADULTOS JOVENS  

Microsoft Academic Search

Palavras-chave: Exercício físico, estresse Effects of a program of low to moderate physical activity in the water in physical performance and control of level of stress in young people. Summary Thirteen subjects (4 males and 9 females), aged between 20 and 28 years, took part in a water physical training program, during the period of 4 months (32 sessions) with

FÁTIMA A. CAROMANO; JAMILE PASSARELLA; ADRIANA MARTINS; BARROS ALVES; VÂNIA ALBUQUERQUE CARDINALI; CLÁUDIA MARCHETTI VIEIRA DA CRUZ; JULIANA MONTEIRO CANDELORO; MAIZA RITOME IDE

480

A crítica marxista do Direito: um olhar sobre as posições de Evgeni Pachukanis A marxist critics of Law: a look over Evgeni Pachukanis' position  

Microsoft Academic Search

This article recollects the contribution of Evgeni Pachukanis for the construction of a General Theory of Law. He was an important Russian jurist, whose work was influential on leftist intellectuals due to its seriousness and to the theoretical depth with which he treated this subject from a Marxist perspective. After being forced to publicly renounce to this positions, he was

Silvia Alapanian

481

Hae-kyung Um - New P'ansori in Twenty-first-Century Korea: Creative Dialectics of Tradition and Modernity - Asian Theatre Journal 25:1  

Microsoft Academic Search

Nearly a century has passed since the first new p'ansori piece The Song of Ch'oe Pyŏng-du was performed at the turn of the twentieth century. While traditional p'ansori, a form of folk musical drama, came to symbolize the cultural and artistic heritage of the Korean nation, new p'ansori, in new millennium, aspires to be a cultural expression that is relevant

Hae-kyung Um

2008-01-01

482

High Resolution Spectroscopy of H212C16O in the 1.9 to 2.56 um Spectral Range  

SciTech Connect

Infrared spectra of H2CO covering the 1.9 ? 2.5 ?m spectral domain have been recorded at very high resolution (0.005 cm-1) using Fourier transform spectroscopy. A thorough analysis of this spectral region has led to the observation and analysis of the v1+v6, v2+v4+v6, 2v3+ v6, v3+v5, v1+v2, v2+v5, 2v2+ v6 and 3v2 bands. The line frequencies were calculated using effective (empirical) Hamiltonian models which account for the main Coriolis and vibrational interactions. Using an interactive scheme it was then possible to least-squares fit the observed energy levels to within a few thousandths of a wavenumber. The Obs. ? Calc. differences do not match the spectral precision ({approx}0.0008 cm-1), but given the congestion in the spectrum resulting from the density of the vibrational states as well as the large centrifugal distortion and Coriolis and anharmonic coupling effects, we believe that a reasonable agreement was obtained.

Flaud, J-M; Lafferty, Walter J.; Sams, Robert L.; Sharpe, Steven W.

2006-06-20

483

Numerical Method for Solving by Approximation an Advanced Integro-Differential Equation Um Metodo Numerico Para Resolucao Por Aproximacao de Uma Equacao Integro-Diferencial de Argumento Avancado.  

National Technical Information Service (NTIS)

Optimally exploring and consuming a nonrenewable natural resource in the presence of uncertainties are addressed. Deshmukh and Pliska proved that the objective function, and the expected utility value of consumption minus the exploration costs, discounted...

A. Z. Milioni P. R. Demorais

1983-01-01

484

A emissão em 8mm e as bandas de Merrill-Sanford em estrelas carbonadas  

NASA Astrophysics Data System (ADS)

Estrelas carbonadas possuem bandas moleculares em absorção no visível e, no infravermelho (IR) as principais características espectrais se devem a emissão de grãos. Recentemente foi detectada a presença de bandas de SiC2 (Merrill-Sanford, MS) em emissão sendo atribuída à presença de um disco rico em poeira. Neste trabalho analisamos uma amostra de 14 estrelas carbonadas, observadas no telescópio de 1.52 m do ESO em 4 regiões espectrais diferentes, a fim de detectar as bandas de MS em emissão. Nossa amostra é composta de estrelas que apresentam além da emissão em 11.3 mm, outra em 8 mm. Esta última emissão, não usual nestes objetos, tem sido atribuída ou a moléculas de C2H2, ou a um composto sólido ainda indefinido. A detecção de emissões de MS e aquelas no IR, simultaneamente, revelaria um cenário mais complexo que o habitualmente esperado para os ventos destes objetos. No entanto como primeiro resultado, verificamos que as bandas de Merrill-Sanford encontram-se em absorção, não revelando nenhuma conexão com a emissão a 8 mm. Assim, temos duas hipóteses: (a) a emissão a 8 mm se deve à molécula C2H2 ou (b) essa emissão é resultado da emissão térmica de grãos. Testamos a segunda hipótese modelando a amostra com grãos não-homogêneos de SiC e quartzo, o qual emite em aproximadamente 8mm. Este grão seria produzido em uma fase evolutiva anterior a das carbonadas (estrelas S) e por terem uma estrutura cristalina são destruídos apenas na presença de campos de radiação ultravioleta muito intensos. Os modelos para os envoltórios utilizam o método de Monte Carlo para descrever o problema do transporte da radiação. As conclusões deste trabalho são: (1) as bandas de Merrill-Sanford se encontram em absorção, sugerindo um cenário usual para os ventos das estrelas da amostra; (2) neste cenário, a emissão em 8 mm seria resultado de grãos de quartzo com mantos de SiC, indicando que o quartzo poderia sobreviver a fase evolutiva S.

de Mello, A. B.; Lorenz-Martins, S.

2003-08-01

485

Genetic polymorphisms in the glutamate-rich protein of Plasmodium falciparum field isolates from a malaria-endemic area of Brazil.  

PubMed

The genetic diversity displayed by Plasmodium falciparum, the most deadly Plasmodium species, is a significant obstacle for effective malaria vaccine development. In this study, we identified genetic polymorphisms in P. falciparum glutamate-rich protein (GLURP), which is currently being tested in clinical trials as a malaria vaccine candidate, from isolates found circulating in the Brazilian Amazon at variable transmission levels. The study was performed using samples collected in 1993 and 2008 from rural villages situated near Porto Velho, in the state of Rondônia. DNA was extracted from 126 P. falciparum-positive thick blood smears using the phenol-chloroform method and subjected to a nested polymerase chain reaction protocol with specific primers against two immunodominant regions of GLURP, R0 and R2. Only one R0 fragment and four variants of the R2 fragment were detected. No differences were observed between the two time points with regard to the frequencies of the fragment variants. Mixed infections were uncommon. Our results demonstrate conservation of GLURP-R0 and limited polymorphic variation of GLURP-R2 in P. falciparum isolates from individuals living in Porto Velho. This is an important finding, as genetic polymorphisms in B and T-cell epitopes could have implications for the immunological properties of the antigen. PMID:23828006

Pratt-Riccio, Lilian Rose; Perce-da-Silva, Daiana de Souza; Lima-Junior, Josué da Costa; Theisen, Michael; Santos, Fátima; Daniel-Ribeiro, Cláudio Tadeu; de Oliveira-Ferreira, Joseli; Banic, Dalma Maria

2013-06-01

486

Gold in Archean iron formations at the nova lima district, and in the Quadrilatero Ferrifero, Minas Gerais, Brazil  

SciTech Connect

Gold is in iron formation and metachert of the Rio das Velhas Greenstone Belt which underwent three main periods of deformation and is greenschist facies. At the Morro Velho, Bicalho, Bela Fama, and Urubu mines gold is mostly within and at grain boundaries of pyrrhotite, arsenopyrite, pyrite, minor chalcopyrite, cubanite, tetrahedrite, galena and sphalerite, in stratiform and stratabound massive and banded sulfide bodies. Some gold is in minor quartz veins. The main host rock consist of schistose to massive quartz ferroan dolomite and ankerite and it rests on spilitized tholeiitic metabasalt with intercalcated mafic to felsic metatuffs overlain by intermediate to felsic metatuffs. /sup 18/O of authigenic quartz of 17.07 per thousand is similar to that of Archean marine carbonate-bearing chert. At the Raposos, Faria, Cuiaba, Sao Bento and Santa Quiteria mines gold is with sulfide minerals similar to those at Morro Velho Mine but is in banded, cabonate, silicate, oxide and sulfide facies iron formation conformable upon and lateral to carbonate rock which both overlies and is intercalated with spilitized pillowed metabasalt, felsic metatuffs and graphitic phyllite. Both gold bearing-sections have a base of metamorphosed periodtitic komatiite and basalt and clastic rocks. The gold-bearing sulfide bodies, the carbonate rock and the BIF are interpreted as chemical precipitants on the sea floor by mixing of ascending reduced hot aqueous fluids and sea water.

Ladeira, E.A.

1985-01-01

487

Abundância química de simbióticas na direção do bojo galáctico  

NASA Astrophysics Data System (ADS)

O estudo da distribuição de metalicidades de gigantes K no Bojo indica um largo intervalo com valores entre 0.1 a 10 vezes o valor solar. As razões elementais Ca/Fe, Si/Fe, Mg/Fe são típicas de estrelas do halo, apontando para um processo rápido de enriquecimento, via estrelas masssivas (SN's tipo II). No entanto, este cenário não combina com os resultados derivados de nebulosas planetárias do bojo tais como os de Ratag et al. (1992, A&A,255,270), Cuisinier et al.(2000, A&A,353, 543), Escudero e Costa (2001, A&A,380, 300),que obtêm abundâncias análogas às do disco. Neste cenário, o estudo de estrelas simbióticas possibilita uma abordagem particularmente apropriada para o problema das abundâncias químicas de estrelas de massa intermediária em estágios avançados da evoluçao estelar. Apresentamos aqui os resultados da determinacão das abundâncias do grupo do CNO numa extensa amostra de simbióticas do bojo. Aliás, com a disponibilidade de espectros no visível determinamos também abundâncias de Ar, Ne, S e He, fundamentais para analisar os processos de enriquecimento químico ocorridos ao longo da evolução estelar, bem como a evolução química do meio interestelar. Com os espectros UV do satelite IUE obtivemos abundâncias de C, necessárias no estudo da evolução dos sistemas. As relaçoes C/N-O/N mostram que o material nebular é produto do vento da componente gigante e não dos eventos de nova que às vezes acontecem nestes sistemas, como foi mostrado por Nussbaumer et al (1988,A&A,198,179). As abundâncias de Ar, S, Ne e O são compativeis com resultados de fontes no disco e bojo, seguindo o gradiente proposto por muitos autores na literatura a partir de diferentes objetos como cefeidas, nebulosas planetárias e anãs G. (CAPES,FAPESP,CNPq)

Luna, G. J. M.; Costa, R. D. D.

2003-08-01

488

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

NASA Astrophysics Data System (ADS)

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

Rodrigues, T.

2003-08-01

489

Sobre o uso das séries de Puiseux em mecanica celeste  

NASA Astrophysics Data System (ADS)

Neste trabalho é apresentada uma demonstração do uso dos diferentes desenvolvimentos em séries para as equações de perturbação em Mecânica Celeste no marco Hamiltoniano. Em trabalhos clássicos como os de Poincaré (Poincaré, 1893) por exemplo, já esta planteado o uso de potências não inteiras no pequeno parâmetro, o que evidencia a não analiticidade das funções quando uma ressonância ocorre. Nestes trabalhos os desenvolvimentos são na raíz quadrada da massa de Júpiter (o pequeno parâmetro). Mais recentemente (Ferraz-Mello, 1985) outros tipos de desenvolvimentos foram aplicados modificando substancialmente as ordens de grandeza e a velocidade de convergência das séries. Com esta abordagem, os desenvolvimentos foram expressados em termos da raíz cúbica do pequeno parâmetro. Neste trabalho apresentamos um enfoque geral, onde os diferentes tipos de desenvolvimentos em séries de Puiseux (Valiron, 1950) são obtidos a partir da aplicação de Teorema de Preparação de Weierstrass (Goursat, 1916) considerando a equação de Hamilton-Jacobi como uma equação algébrica. Os resultados são aplicados ao problema restrito dos três corpos em ressonância de primeira ordem e, dependendo da grandeza da excentricidade do asteróide em relação à de Júpiter, obtemos os diferentes desenvolvimentos, em raíz quadrada ou raíz cúbica da massa de Júpiter.

Miloni, O. I.

2003-08-01

490

Analise do comportamento de pressao e temperatura da contencao de um reator PWR sob os efeitos de um acidente de perda de refrigerante. (Analysis of the behaviour of pressure and temperature of the containment of a PWR reactor, submitted to a postulated loss-of-coolant accident).  

National Technical Information Service (NTIS)

The main purpose of this work is to analyse the pressure and temperature behaviour of the metalic containment of a PWR building, submitted to a postulated loss-of-coolant accident (LOCA) caused by a double-ended rupture in the main line of the primary cir...

D. E. Silva L. A. J. Arrieta J. R. Costa C. Camargo C. M. Santos

1979-01-01

491

EL CUIDADO DE SÍ DE LA EMBARAZADA DIABÉTICA COMO UNA VIA PARA ASEGURAR UN HIJO SANO SELF-CARE OF DIABETIC PREGNANT WOMEN, A WAY OF ENSURING A HEALTHY BABY O CUIDADO DE SI DE GESTANTES DIABÉTICAS COMO UM CAMINHO PARA ASSEGURAR UM FILHO SAUDÁVEL  

Microsoft Academic Search

This focused ethnography explored the beliefs, values, habits and behavioral patterns of diabetic pregnant women who were treated in Hospital Doutor Enrique Tejera, residents of three poor, urban communities in the city of Valencia, Venezuela. The purpose of this study was to find the meaning of self-care for these pregnant women. The Health Analysis, the Theory of Diversity, and the

Carmen Amarilis; Guerra de Castillo; Marta Lucía Vásquez

2006-01-01

492

A Study of the Dynamics of Droughts in Northern Brazil: Observations, Theory, and Numerical Experiments with a Global Atmospheric Circulation Model Um Estudo Sobre a Dinamica das Secas Do Nordes Te Do Brasil: Observacoes, Teoria E Experimentos Numericos COM Um Modelo Global de Circulacao Atmosferica.  

National Technical Information Service (NTIS)

The monthly mean sea surface temperature anomalies over tropical Altantic and rainfall anomalies over two selected stations for 25 years (1948-1972) were examined. It is found that the most severe drought events are associated with the simultaneous occurr...

A. D. Moura J. Shukla

1980-01-01

494

Geracao de Feixes de Eletrons em Movimento Ciclotronico e Sua Interacao Com Campos Eletromagneticos em Cavidades Fracamente Irregulares: Um Estudo Aplicado a Elaboracao Conceitual de Um Girotron de 35 GHz (Generation of Electron Beams in Cyclotron Motion and Its Interaction with Electromagnetic Fields in Weakly Irregular Cavities: An Applied Study and Conceptual Design of a 35 GHz Gyrotron).  

National Technical Information Service (NTIS)

An investigation is presented for different phenomena that occur in a gyrotron: (1) generation and transport of helical electron beams; (2) interaction of electrons in cyclotron motion with a transverse electric mode in resonant cavities operating near cu...

J. J. Barrosodecastro

1988-01-01

495

Indicador espacial del metabolismo urbano. Huella Ecológica de la ciudad de Tandil, Argentina  

Microsoft Academic Search

Además de problemas urbanos evidentes -contaminación, residuos, etc.-, existe un problema asociado a la propia dinámica del sistema urbano que es de interés: la apropiación creciente de ecosistemas productivos externos destinados a satisfacer los requerimientos del metabolismo urbano de la ciudad de Tandil, Argentina. Se emplea para su cálculo, la Huella Ecológica (HE) (Rees 1996a; Wackernagel 1996) que permite evaluar

Elsa Marcela Guerrero; Fernando Guiñirgo

2008-01-01

496

Les expériences de santé comme vecteur de l'identité  

Microsoft Academic Search

[spa] Las experiencias de salud coma vector de la identidad . . Para medir el impacto de los problemas de salud sobre la construccion de las identidades, tres preguntas sirvieron . a delimitar una poblacion ataflida por tales problemas: un 4,5 % declaran unicamente limitaciones de su actividad, un 23 % unicamente un tratamiento 0 control regular por motivo médico,

Isabelle Ville; Daniel Ruffin

2006-01-01

497

El Big Bang en Japón  

Microsoft Academic Search

La recuperación de la recesión y la solución al problema de los créditos incobrables de las compañías Jusen - especializadas en la financiación de la vivienda – son las cuestiones que más inciden en la actual situación económica de Japón. Por otra parte, el déficit fiscal y la reestructuración, incluidas las reformas administrativas y fiscal, son también otros problemas que

Ernesché Rodríguez Asien

2007-01-01

498

The controversy between Alexander Friedmann and Albert Einstein about the possibility of a non-static world (German Title: Die Kontroverse zwischen Alexander Friedmann und Albert Einstein um die Möglichkeit einer nichtstatischen Welt)  

Microsoft Academic Search

Einstein's treatment of the cosmological problem as well as his unshakeable adherence to his own static solution of the complete field equations was throughout determined by Ernst Mach's idea of relativity of inertia. Friedmann, however, like Eddington, Weyl and others did not consider Mach's principle to be a part of general relativity, and so he regarded a time dependent developing

Georg Singer

2005-01-01

499

INFLUÊNCIA DA VARIABILIDADE ESPACIAL DE ATRIBUTOS QUÍMICOS DE UM LATOSSOLO NA APLICAÇÃO DE INSUMOS PARA CULTURA DE CANA-DE-AÇÚCAR Influence of the spatial variability of latosol chemical attributes and input application for sugarcane culture  

Microsoft Academic Search

Geostatistics and precision agriculture supports on techniques for local application of agricultural amendments at varied rates, has been one of the areas where recent efforts of research and development have been focused. Therefore, the present paper aimed to evaluate lime and phosphorus application needs according to the spatial distribution of soil chemical attributes. Soil samples were collected from 0.0-0.20 m

Zigomar Menezes de Souza; Diogo Mazza Barbieri; José Marques Júnior; Gener Tadeu Pereira; Milton César; Costa Campos