Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 16 )

2019 ( 227 )

2018 ( 354 )

2017 ( 380 )

Custom range...

Search Results: 1 - 10 of 196058 matches for " William Douglas de Almeida "
All listed articles are free for downloading (OA Articles)
Page 1 /196058
Display every page Item
Three Athletes, Two Countries and a Single Club: The Process of Identity Formation of Immigrant Sailors in Brazil  [PDF]
William Douglas de Almeida, Katia Rubio
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1103477
Brazil received a large number of German immigrants in the late 19th century and in the first half of the 20th century. Their adaptation process involved both economic and social factors since they took part in several institutions, such as schools and sports clubs. This paper aims at describing the route taken by three immigrants (Joaquim Roderbourg, Klaus Hendriksen and Burkhard Cordes) who were born in Germany, took root in Sao Paulo, Brazil, between the 1930’s and the 50’s, and represented Brazil in the Olympic Games as sailors. It aims at understanding their migration process, adaptation and decision to become Brazilian. The method was based on biographical narratives. Even though they migrated at different times, points in common were found in the subjects’ routes, since they constructed a relation with Brazil which went beyond sports.
Optimization of a Cytochrome-P450-Monooxygenase-1A-Mediated EROD Assay in the Cape Hake Species Merluccius capensis and Merluccius paradoxus (Pisces)
Louise De Almeida,William Froneman,Brett Pletschke
Enzyme Research , 2011, DOI: 10.4061/2011/108395
Abstract: Cytochrome P450 monooxygenase 1A (CYP1A) is induced by several planar toxic compounds, for example, polychlorinated biphenyls (PCBs) and the induction of this protein is often measured in terms of CYP1A-mediated 7-ethoxyresorufin- -deethylase (EROD) activity. This study was aimed at developing this assay in the Cape hake species Merluccius capensis and Merluccius paradoxus (considered one stock). Microsomal fractions were obtained from frozen fish liver samples by differential centrifugation. Fluorimetric and spectrophotometric analysis of the EROD assay resulted in the spectrophotometric (at 572?nm) detection method being selected, as this method resulted in a lower degree of variability and demonstrated higher reproducibility. The activity in the EROD assay was enhanced in the presence of NADPH, and the addition of dicumarol (phase II enzyme inhibitor) to the reaction mixtures prevented the underestimation of this assay by the inhibition of DT-diaphorase. In summary, an EROD assay was established for use in Cape hake species. 1. Introduction In recent years the increased production and release of organic trace pollutants, for example, herbicides, metals, polychlorinated biphenyls, alkylphenols, insecticides and industrial effluent mixtures into the marine environment have increased concern and awareness into the bioaccumulation, bioconcentration, and biomagnification of these pollutants in marine organisms [1–3]. The production and release of these pollutants have been directly linked to the reduction in successful reproduction and increased mortality in several fish species [4–6]. In many fish populations, the pollutant toxic effects are only evident after an extended period of time. As a result, research into early warning systems in the form of biomarkers for various pollutants has received increased attention [7, 8]. A biomarker is defined as a biological response (molecular, physiological, or behavioral) which can be traced back to the exposure or the toxic effect of environmental pollutants. These effects can be measured in body fluids, cells, or tissues [9]. The use of biomarkers has several advantages over the use of analytical chemistry for the detection of pollutants in the aquatic environment. Biomarkers do not require the use of different chemicals at varying concentrations and thus do not introduce “foreign” chemicals into the environment. Also, the use of analytical techniques can often be very expensive and requires specialized training [10]. Fish models have played a significant role in toxicological studies used to assess the state of
Estimating Stocks Return with Decomposition of the Book-to-Market Ratio: Evidences from Bovespa
Juliano Ribeiro de Almeida,William Eid Jr.
Revista Brasileira de Finan?as , 2010,
Abstract: The book-to-market (BM) ratio differs across stocks because to differences in expected cashflows and expected returns. The central hypothesis is that the evolution of BM, in terms of past changes in price and book equity, contains information about future cashflows that can be used to improve estimates of expected returns. This article used a database of Economática to extract a sample of non-financial companies shares listed on BOVESPA and test this hypothesis. The estimated regressions were performed monthly during the period July 1996 to June 2008. Both for large and mid caps as for small caps, the results do not favor this hypothesis and show that only the most recent BM is important to predict the assets returns. Furthermore, stock issues and repurchases are also related to future cashflows and it is expected to improve estimates of expected returns. However, the results provide no evidence favoring that.
A família Arecaceae (palmeiras) no município de Lavras, MG
Joyce de Almeida Alves,Douglas Ant?nio de Carvalho
CERNE , 2010,
Abstract: This work identified the species of Arecaceae that occur in the County of Lavras, MG and elaborated a dichotomousanalytical key for the species found. The survey was carried out in two stages: (1) survey the main squares and gardens (municipaland privately owned); (2) survey of the species close to the margins of the Lavras County federal, state and municipal highways. Thepalm trees found were photographed and identified in loco or through herbarium survey and related literature. Thirty nine specieswere found, 5 of which are native, distributed in 25 genera. The genera with the higher numbers of species were Syagrus (6), Dypsis(3) and Roystonea (3), making up 31.58% of the species. The native species Acrocomia aculeata and Syagrus romanzoffiana occurin most edges of the travelled roads. In the survey done in the main squares and gardens, the species of the genus Dypsis, Syagrusromanzoffina, Phoenix roebelenii and Caryota urens stood out.
A participa??o popular na gest?o local do Programa Saúde da Família em Campina Grande, Paraíba
Lacerda, William Almeida de;Santiago, Idalina Maria Freitas Lima;
Revista Katálysis , 2007, DOI: 10.1590/S1414-49802007000200007
Abstract: this article presents a study of a process of popular participation in the management of a family health program in two communities in the municipality of campina grande, paraíba. it examines the perspective of three segments: community health councils, users of educational groups and professionals in the family health program. it strives to identify the level of participation of users of the educational groups in the activities undertaken in the family health program and to analyze the participation of the community healthcare council members in proposing, enacting and evaluating the actions of the family health program. a number of limitations were identified: the non-participation of the community council members in the planning of actions undertaken by the staff; the difficulty of the local healthcare council in establishing interlocution with the communities; and the lack of on-going training for the professionals in methodologies to encourage popular participation.
Understanding Growth Hormone Secretion and Short Stature  [PDF]
Milton Rodrigo Lafuente Covarrubias, Luis Fernando de Azevedo Piovezani, Frederico Martins Cordeiro, William Cabrera Viana, Mirella Hansen de Almeida, Denise Rosso Tenório Wanderley Rocha, Alberto Krayyem Arbex
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2016, DOI: 10.4236/ojemd.2016.61011
Abstract: Short stature is a clinical challenge in the daily practice of pediatric endocrinology, regarding the several technical, cultural and economic factors associated with its approach. This article intends to review the physiology of growth hormone secretion, the endocrine regulation of human growth and the clinical aspects of the diagnosis and treatment of short stature. It specifically analyses the treatment of short stature with growth hormone, along with its side effects, cost/benefit analysis and possible risks. A clinical case from a medical school is also described, intending a better understanding of this frequent ambulatory situation in endocrinology and pediatrics.
Coccidiosis in broiler chickens raised in the Araguaína region, State of Tocantins, Brazil
Toledo, Gustavo Andrade;Almeida, Jefferson Douglas de Moura;Almeida, Katyane de Sousa;Freitas, Fagner Luiz da Costa;
Revista Brasileira de Parasitologia Veterinária , 2011, DOI: 10.1590/S1984-29612011000300014
Abstract: eimeriosis is responsible for causing serious problems in poultry, mainly characterized by reduced weight gain and abnormalities of food conversion efficiency, thereby causing great economic losses. the aim of this study was to evaluate the epidemiology of eimeriosis in broiler chickens in the araguaina region, state of tocantins, brazil. samples from five farm properties were collected and sent to the hygiene and public health laboratory, school of veterinary medicine and zootechnics, federal university of tocantins. from the parasitological analysis, it was shown that all the properties examined were positive for eimeria species. 63.1% of the sheds were positive, with findings of oocysts of e. maxima, e. acervulina, e. mitis and e. tenella. it was concluded that all properties evaluated were positive for four species of the genus eimeria, thus demonstrating that the sanitary strategies followed in poultry rearing had flaws that allowed pathogens to spread in poultry pens.
Effect of sigma factor S (sigmaS) on the stability of penicillin-binding protein 3 (PBP3) of Escherichia colt K12
Machado, Rosane S.;Camelo, Douglas C.;Almeida, Darcy F. de;Ferreira, Luis C.S.;
Brazilian Journal of Genetics , 1996, DOI: 10.1590/S0100-84551996000400001
Abstract: the stability of penicillin-binding protein 3 (pbp3), a cell septum synthesizing protein, was analyzed at different incubation temperatures in three escherichia coli k12 strains carrying a pbp3-overproducing plasmid. the stability of pbp3 was significantly reduced in stationary phase cells shifted to 42°c for 4 h, compared to samples incubated at 28 or 37°c. the half-life of pbp3 in the c600 strain was 60 min at 42°c, while samples incubated at 28 or 37°c had pbp3 half-lives greater than 4 h. analysis of the pbp3 content in mutants deficient in rpos (coding for the stationary phase sigma factor, ss) and rpoh (coding for the heat shock sigma factor, s32) genes after shift to 42°c showed that stability of the protein was controlled by ss but not by s32. these results suggest that control of the pbp3 levels in e. coli k12 is through a post-transcriptional mechanism regulated by the stationary phase regulon. we demonstrated that stability of pbp3 in e. coli k12 involves degradation of the protein. moreover, we observed that incubation of cells at 42°c significantly reduces the stability of pbp3 in early stationary phase cells in a process controlled by ss.
Conserva??o on farm da agrobiodiversidade de sítios familiares em Jequié, Bahia, Brasil
Lyra, Danilo Hottis;Sampaio, Luana Santos;Pereira, Douglas de Almeida;Amaral, Cláudio Lúcio Fernandes;
Revista Ceres , 2011, DOI: 10.1590/S0034-737X2011000100011
Abstract: the caatinga is a priority area for biodiversity conservation in brazil. in these areas there are many communities of farmers that maintain traditional agricultural practices which are vital for on farm conservation. the aim of this study was a survey on the socioeconomic and cultural profile of stallholders, identifying species and managements in their farms that favor on farm conservation of the diversity of cultivated species. the influence of the area of cultivated land on the richness and abundance of plants was analyzed. the survey was carried out through visits to street markets and family farmer units located in the municipality of jequié - ba, northeastern brazil. twenty-eight species were cited for food utilization, belonging to 17 families, totalling 75 etnovarieties. the influence of the area of cultivated land on the species richness showed low correlation (r = 0.29, p < 0.01), but showed a strong correlation (r = 0.69, p <0.01) on species abundance. most farmers have little formal schooling and low income. the occurrence of on farm conservation was detected in the studied areas.
Analgesic effectiveness of the association of transcutaneous electrical nerve stimulation and cryotherapy for chronic low back pain
Abreu, Eliziete Almeida de;Santos, Jean Douglas Moura dos;Ventura, Patrícia Lima;
Revista Dor , 2011, DOI: 10.1590/S1806-00132011000100006
Abstract: background and objectives: transcutaneous electrical nerve stimulation (tens) and cryotherapy are physical therapy resources individually used, since there is the possibility of interaction between tens and cryotherapy if they are associated. this study aimed at evaluating the analgesic effectiveness of the association or not of tens and cryotherapy to relieve chronic low back pain. method: clinical trial involving six chronic low back pain patients distributed in three groups: cryotherapy, tens, and the association of both techniques. analgesia was induced for 20 minutes during 5 days, with one session per day. all patients were submitted to conventional kinesiotherapy with ischiotibial, lumbar square and iliopsoas elongation, aiming at increasing adherence to treatment. cryotherapy was applied with crushed ice bag and tens was in burst with physiotonus tens/fes 3050 equipment of the bioset brand, with pulse trains of 2 hz, individual pulse frequencies of 100 hz and pulse duration of 150 μs. pain intensity was evaluated by the visual analog scale before and after each session. results: with regard to pain intensity in the cryotherapy group, initial and final medians were 5.5 and 4, respectively. for the tens and tens associated to cryotherapy groups they were 5 and 3, respectively. with regard to pain relief, 100% have referred good relief in the tens group; in cryotherapy and tens associated to cryotherapy groups 50% have referred good relief and 50% very good relief. conclusion: although the combined therapy has caused no significant improvement as compared to isolated therapies the three analgesic modalities used in this study were effective to relieve chronic low back pain. satisfaction was higher in the cryotherapy group as compared to the tens group.
Page 1 /196058
Display every page Item

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