oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2020 ( 167 )

2019 ( 973 )

2018 ( 1151 )

Custom range...

Search Results: 1 - 10 of 657049 matches for " Manuel A. R. Da Fonseca "
All listed articles are free for downloading (OA Articles)
Page 1 /657049
Display every page Item
Keynes’ Analytical System as an Econometric Tool: Examining Macroeconomic Trends in the U.S. from 1950s to 1980s  [PDF]
Manuel A. R. Da Fonseca
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.810112
Abstract: The initial goal of this paper is to develop the standard Keynes’ analytical system into a dynamic macro-econometric model, which is then applied to the analysis of macroeconomic indicators for the U.S. from 1950s to 1980s—a period marked by strong volatility of inflation, exchange rates and commodity prices. Based on the results obtained and, in particular, on the model’s structure and exogenous variables, it is possible to single out the main factors that explain the macro-trends observed in the American economy. Further, a second and more important goal is to evaluate if a simple macro-dynamic model can be a relevant tool in empirical analysis of macroeconomic developments. The results obtained indicate that, although the elements of the Keynesian system are most often used in a purely theoretical perspective, a macro-econometric model based on those elements can be successfully used in reproducing overall macroeconomic variables in a certain period—and the determinants of those macro-trends can be traced to the model’s exogenous variables.
No Forest Left Behind
Gustavo A. B. da Fonseca,Carlos Manuel Rodriguez,Guy Midgley,Jonah Busch,Lee Hannah,Russell A. Mittermeier
PLOS Biology , 2012, DOI: 10.1371/journal.pbio.0050216
Abstract:
No Forest Left Behind
Gustavo A. B da Fonseca ,Carlos Manuel Rodriguez,Guy Midgley,Jonah Busch,Lee Hannah,Russell A Mittermeier
PLOS Biology , 2007, DOI: 10.1371/journal.pbio.0050216
Abstract:
A fundoplicatura total por laparoscopia na doen?a do refluxo gastresofágico
Silva,Guedes da; Fonseca,S.; Penedo,J.; Formiga,A.; Tinto,R. Rio; Lopes,M. J.;
Jornal Português de Gastrenterologia , 2006,
Abstract: sixty-two patients with gerd, with or without hiatal hernia, underwent total laparoscopic nissen fundoplication (between septiber 1995 and october 2003) on our surgery service (servi?o 6, hospital santo antónio dos capuchos, lisboa, portugal) with no subsequent mortality. of these, 55 patients (89%) were treated by laparoscopy alone. the riaining 7 patients (11%) were excluded from this analysis due to conversion to laparotomy. selection for surgical treatment was based on the patient's history and upper endoscopy, 24-hour intra-oesophageal ph and manometry results. a uniform operative technique was used for the fundoplication, with only slight differences relating to progression or differences in circumstances. average post-operative stay was 4.2 days. outpatient follow-up included 50 patients. after an average follow-up of 17.6 months, 98% of patients were asymptomatic. additional post-operative tests were carried out in fifteen volunteers to evaluate the efficacy of fundoplication in the control of gerd and hiatal hernia. application of the wilcoxon's test (p=0.0001) supported the efficacy of the method.
Fotoluminescência em amostras policristalinas de galato de magnésio dopado com Ni2+
Sosman, L. P.;Fonseca, R. J. M. da;Tavares Jr., A. Dias;Abritta, T.;
Ceramica , 2006, DOI: 10.1590/S0366-69132006000200013
Abstract: the photoluminescence of mggaso4:ni2+ are presented in this article. the observed bands are attributed to the 1t2 (1d) ? 3t2 (3f) and 1t2 (1d) ? 3t1 (3f) spin-forbidden transitions and located in the visible and infrared regions, respectively. absorption spectra obtained from diffuse reflectance measurements show bands associated with 3a2 (3f) ? 3t1 (3f) and 3a2 (3f) ? 3t2 (3f) transitions and a weak structure assigned to 3a2 (3f) ? 1e (1d) transition. all the observed transitions are identified with energy levels of ni2+ in octahedral sites of magnesium gallate. from the tanabe-sugano energy diagrams for a d8 configuration, the crystal field dq and interelectronic repulsion b and c parameters were calculated. we also present, for comparison, previous results of cr3+ (d3 electronic configuration), fe3+ (d5) and co2+ (d7) ions in this host lattice for samples prepared with the same ceramic method.
A MULTIVARIATE ANALYSIS OF Boophilus microplus (ACARI: IXODIDAE): NON-PARASITIC PHASE
de la Vega,R; Díaz,G; da Fonseca,A.H;
Revista de Salud Animal , 2010,
Abstract: multivariate statistical methods are relatively new tools for data analysis. they have a lot of applications in biological researches: nevertheless, for several reasons, they have not been widely employed in this subject yet. recently, present authors published a paper applying multivariate statistics on non-parasitic phase of anocentor nitens. in the present article boophilus microplus has received a very similar statistic treatment. in this paper, the influence of different incubation conditions was studied in groups of 12-15 individuals in each of the 24 combinations of six temperatures 24, 27, 30, 32, 34 and 36oc and four relative humidity values, 100, 80, 75.5 and 70% over the cycle variables of b. microplus. according to the results, the best conditions are 30oc and 100% relative humidity and the worse ones were higher temperatures together with lower relative humidity. it was remarked that this ixodid is better adapted to warm humid conditions in tropic than a. nitens is. some other issues have been discussed in this new approach, like the possibility of its applications in prognosing geographical distribution of ixodids.
PHYSICAL CARACTERIZATION OF BARU FRUITS (Dipteryx alata VOG.) IN THREE POPULATIONS IN CERRADOS FROM THE GOIáS STATE CARACTERIZA O FíSICA DE FRUTOS DE BARU (Dipteryx alata Vog.) EM TRêS POPULA ES NOS CERRADOS DO ESTADO DE GOIáS
Gilmarcos de Carvalho Corrêa,Ronaldo Veloso Naves,Mara Rúbia da Rocha,Lincoln Fonseca Zica
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v30i2.2578
Abstract: This study was carried out with 150 plants of baru (Dipteryx alata Vog.) from three regions of Goiás State. It had 50 plants per region, and it were randomizes choiced at 1995. The purpose was to verify the occurrence and distribution of genetic variation among tested populations. Fruits were analysed about morphollogical characters. The experiment was planted as hierarchal model with regions level, plants within regions and fruits within plants. There was variation to all morphollogical characters in fruits at regions and plants within regions levels. The most variation proportion was founded at plants within regions level with high levels of transmission to all characters. KEY-WORDS: Baru; cerrados; population. O estudo foi conduzido com 150 plantas de baru (Dipteryx alata Vog.), originárias de três regi es do Estado de Goiás, num total de 50 plantas por regi o, escolhidas, aleatoriamente, no ano de 1995. O objetivo foi verificar a ocorrência e distribui o da variabilidade genética das popula es amostradas, através da avalia o dos caracteres morfológicos de frutos. Adotou-se, para o experimento, o modelo hierárquico com os níveis de regi es plantas dentro de regi es, e frutos dentro de plantas. Houve varia o para todas as variáveis morfológicas de frutos, entre plantas de diferentes regi es e entre plantas dentro de regi es. N o houve varia o entre frutos dentro de plantas para nenhuma das variáveis avaliadas. Maior propor o da variabilidade foi observada entre plantas dentro de regi es, com altos níveis de herdabilidade, no sentido amplo, para todas as variáveis estudadas. PALAVRAS-CHAVE: Baru; cerrados; popula o.
O que pensam os treinadores portugueses da 1a liga sobre a importancia da interven??o psicológica no futebol profissional?
Barreiros, André Neves;Silva, Júlio Manuel Garganta da;Freitas, Sim?o Pedro Fernandes de;Duarte, Daniel Fernando Teixeira da Silva;Fonseca, António Manuel Leal Ferreira Mendon?a da;
Motriz: Revista de Educa??o Física , 2011, DOI: 10.5016/1980-6574.2011v17n1p128
Abstract: sport performance results from the interaction of physical, technical, tactical and psychological aspects. however, in soccer training less attention is devoted to the psychological domain. the purpose of this study was to investigate elite soccer coaches' perceptions concerning different aspects of the psychological dimension, namely the conceptions about mental training and his relationship with training, in general, and performance; the coaches' level of preparation to apply a specific psychological training; and the collaboration with a sport psychology expert. using in-depth interviews, fifteen coaches of the portuguese first league were interviewed. the interviews showed that the coaches attribute great significance to the psychological domain and to a possible collaboration with a sport psychology expert, as coaches seem to be unprepared to apply specific mental strategies or are unfamiliar with them.
Evaluation of immunogenicity elicited from two DNA vaccine candidates that expresses the prM and E genes of the dengue-3 virus  [PDF]
Sérgio O. de Paula, Rafael F. O. Fran?a, Danielle M. Lima, Nina R. Dutra, Marília B. de Paula, Michelle D. de Oliveira, Leandro L. de Oliveira, Benedito A. L. da Fonseca
Health (Health) , 2010, DOI: 10.4236/health.2010.211193
Abstract: In this work, we report the evaluation of two DNA vaccines against dengue-3 virus (DENV-3). The first construction, called pVAC3DEN3, was engineered inserting the pre-membrane (prM) and envelope (E) gene of DENV-3 truncated with a restriction site between them, as previously described. The second construction was developed cloning the full gene sequence of prM and E from DENV-3 virus in pCI plasmid for mammalian expression and was denominated pVAC1WDEN3. The results showed that both constructions were capable of expressing the prM and E proteins, as demonstrated by ELISA and immunoblotting detection in cell culture transfected with the plasmids. After positive “in vitro” results, the vaccine candidates were used to immunize BALB/c mice and the elicited response was investigated. After immunization by intramuscular inoculation with three doses of each vaccinal clone the animals were sacrificed, the cytokine levels and T cell response were analyzed in the spleens, after three days of culture with stimulus, our analysis showed that the two constructions elicited T cell responses mea- sured by BrdU incorporation assay and high levels of IFN-γ, detected in the supernatant of the cultures. Moreover, both constructions induced detectable titers of neutralizing antibodies in mice. And finally the survival rate of the immunized animals after intracerebral challenge was analyzed, showing a better result in the pVAC3DEN3 group with an 80% survival compared with a 50% survival of the pVAC1 WDEN3. Thus, these data showed that our two constructions were able to induce specific immune response and protects mice against a lethal challenge with DENV-3, and these vaccine candidates can be employed to develop a viable dengue vaccine.
Colpocitologia em ambulatório de ginecologia preventiva
MOTTA E.V. DA,FONSECA A.M. DA,BAGNOLI V.R.,RAMOS L. DE O.
Revista da Associa??o Médica Brasileira , 2001,
Abstract: OBJETIVOS: Avaliar os resultados de colpocitologia oncótica de mulheres atendidas em ambulatório de ginecologia preventiva (Hospital das Clínicas da Faculdade de Medicina da Universidade de S o Paulo). MéTODOS: Foram estudadas 6821 mulheres submetidas a exame clínico e ginecológico com realiza o de colpocitologia oncótica pela técnica de Papanicolaou. Estas mulheres foram consideradas conforme a faixa etária em três grupos: abaixo de 40 anos, entre 41 e 60 anos e acima de 60 anos. RESULTADOS: Amaioria das mulheres reconhecem tanto a necessidade da colpocitologia como sua periodicidade, principalmente entre as mais jovens. As mulheres acima de 60 anos eram as que mais referiam (54,1%) n o conhecer a necessidade da colpocitologia oncótica, nem sua periodicidade (58,8%); o grupo que melhor referia conhecimento da necessidade e periodicidade da colpocitologia oncótica foi o de mulheres entre 40 e 60 anos. O material foi considerado insuficiente para análise em 15,1% ou inadequado em 1,1%, sendo os resultados: classe I (21,7%), II (59,9%), III (2,0%), IV (0,1%) e V (0,1%). N o houve diferen a significativa em rela o à distribui o dos casos de neoplasia intraepitelial (NIC) entre as faixas etárias. O achado microbiológico mais freqüente foi Gardnerella sp. (8,6%). Presen a de papilomavírus humano (HPV) foi significativamente menor nas mulheres acima de 60 anos. CONCLUS ES: O diagnóstico de altera es colpocitológicas relacionadas a neoplasias foi de 2,2% com detec o de Gardnerella sp. como o agente microbiológico mais prevalente por este método. A distribui o de infec o pelo HPV mostrou declínio com o aumento da faixa etária. As mulheres mais velhas foram as que menos apresentavam conhecimento sobre a realiza o de colpocitologia.
Page 1 /657049
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.