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Search Results: 1 - 10 of 208686 matches for " P. Rocha "
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Desenvolvimento de referencial teórico para um sistema de informa??es gerenciais (SIG) para parlamentares e assessores na Camara Legislativa do Distrito Federal: em busca de um modelo conceitual
Rocha, Marisa P. C.;
Ciência da Informa??o , 2003, DOI: 10.1590/S0100-19652003000300010
Abstract: we seek to develop a referential theoretical for a conceptual model by a support information system to the decision, social-technique-structured-analysis-based. so that, we have analyzed the internal and external factors to act on representatives' and assessors' performances in the legislative process. as result, we got the relations between organization, environment and data, represented graphically, in a conceptual model.
Abcesso do Psoas: complica o clássica mas rara da Doen a de Crohn
P. Lago,A. Rocha
Jornal Português de Gastrenterologia , 2007,
Abstract:
Teletrabalho: que oportunidade de trabalho para o cidad?o incapacitado?
Santana,Silvina; Rocha,Nelson P.;
Análise Psicológica , 2002,
Abstract: the nature of work, as it has been understood, is undergoing a fundamental redefinition. teleworking and computerized remote work constitute the most important manifestations of that redefinition. as a result of the ict evolution, many of the tasks previously accomplished in the factory or in the office can now be done from home, from telecenters or from any place where the worker can have access to the necessary tools. disable citizens have being considered as potential beneficiares of teleworking. however, the subject raises several questions. specifically, it is important to determine companies' willingness to adopt this new work modality, the activities they will consider to pass to external entities and the more appropriated model to adopt, when talking about teleworkers with special needs. on the other hand, it is necessary to determine and analyse perceptions and expectations, in order to manage eventual resistances and provide solutions liable to being adopted and udes efficiently. this work reports the results of a study designed to find answers to these questions. it also allowed finding out the competences potential teleworkers need to have, enabling the progress of training actions and the development of insertion strategies adapted to the teleworkers and to the needs and expectations of employing companies.
Development of a chamber for in situ toxicity tests with small fishes
P. C. MELETTI,O. ROCHA
Brazilian Journal of Biology , 2002, DOI: 10.1590/s1519-69842002000100021
Abstract:
Study on little active and sedentary women: Comparison between protocols and prospects for admission in physical activity program  [PDF]
A. D. P. Bankoff, C. A. Zamai, J. Rocha, P. R. Mendes Guimar?es
Open Journal of Preventive Medicine (OJPM) , 2013, DOI: 10.4236/ojpm.2013.36056
Abstract: The aim of this work was to study little active and sedentary women through physical assessments using anthropometric measurements and exercise testing using the Naughton and Bruce protocols. Approximately 53 women were evaluated: Group 1—comprised of 17 completely sedentary women, aged 25-58 years, mean age 44.4 years, and Group 2—comprised of 36 women who answered doing physical activities once or twice a week (low active), aged 28-54 years, mean age 39.5 years. The results Group 1— high weight, body mass index showing overweight, heart rate above the target areas of your training, i.e., above 85% effort. Systolic blood pressure reached a high level in the seventh stage with 21 minutes of effort (177.3) and diastolic (92.7). Group 2—normal weight, body mass index recorded is considered thin, heart rate heart zones above the target of your training, i.e., above 85% effort also. Systolic blood pressure reached the highest level in phase 1 recovery (156.75). Diastolic blood pressure recorded pressure levels considered normal for the type of work done by the group. The values reported for the double product are considered normal for the type of effort made by both groups. Conclusion: The participants from group 1 are able to join physical activity programs from the results presented, specifically due to weight, BMI, heart rate and blood pressure. The participants from group 2 require more days of practice of physical activities and longer hours to improve the levels of heart rate and blood pressure.
Charged Gravastar in a Dark Energy Universe  [PDF]
C. F. C. Brandt, R. Chan, M. F. A. da Silva, P. Rocha
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.46118
Abstract:

Here we constructed a charged gravastar model formed by an interior de Sitter spacetime, a charged dynamical infinitely thin shell with an equation of state and an exterior de Sitter-Reissner-Nordstrom spacetime. We find that the presence of the charge is crucial to the stability of these structures. It can as much favor the stability of a bounded excursion gravastar, and still converting it in a stable gravastar, as make disappear a stable gravastar, depending on the range of the charge considered. There is also formation of black holes and, above certain values, the presence of the charge allows the formation of naked singularity. This is an important example in which a naked singularity emerges as a consequence of unstabilities of a gravastar model, which reinforces that gravastar is not an alternative model to black hole.

Air Quality Trends in Metropolitan Zones in Veracruz, México  [PDF]
Sergio Natan González Rocha, Juan Cervantes Pérez, José M. Baldasano Recio
Open Journal of Air Pollution (OJAP) , 2016, DOI: 10.4236/ojap.2016.52007
Abstract: Mexico and currently in Veracruz state, there are metropolitan zones (MZ) growing. Therefore, main objective in this paper is to analyze new data and AQ trends during 01.09.2013 to 30.06.2015 of two new AQ monitoring stations installed in Xalapa and Minatitlan MZ in 2013-year. The methodology applied used quality criteria to the datasets, followed by data validation and statistics for further analysis to determine the hourly, weekly and yearly trends of NO2, O3, SO2, PM10 and PM2.5. Indicators were compared with Mexican standards, CAI-LAC report, WHO guidelines, EU and USA standards to evaluate the AQ in both sites. We observed AQ trends from moderate to bad in Xalapa and Minatitlan MZ where the PM10 and PM2.5 surpassed the WHO guidelines and Mexican standards. O3 and SO2 in Xalapa presented a quality from good to moderate and in Minatitlan sometimes were from moderate to bad. NO2 did not exceed the value limits of Mexican standards, only Xalapa has exceeded the WHO guidelines. In Minatitlan, the Mexican limits were not exceeded. Concluding, PM10 and PM2.5 concentrations were the main problem. Others pollutants that influenced the AQ were O3, NO2 and SO2 in Minatitlan MZ due probably to meteorology, site conditions, location and oil and petrochemical industries. In Xalapa, MZ NO2 and SO2 are attributed mainly to road transport.
Peritoneal Dialysis in Diabetics: There Is Room for More
P. Cotovio,A. Rocha,A. Rodrigues
International Journal of Nephrology , 2011, DOI: 10.4061/2011/914849
Abstract: End stage renal disease diabetic patients suffer from worse clinical outcomes under dialysis-independently of modality. Peritoneal dialysis offers them the advantages of home therapy while sparing their frail vascular capital and preserving residual renal function. Other benefits and potential risks deserve discussion. Predialysis intervention with early nephrology referral, patient education, and multidisciplinary support are recommended. Skilled and updated peritoneal dialysis protocols must be prescribed to assure better survival. Optimized volume control, glucose-sparing peritoneal dialysis regimens, and elective use of icodextrin are key therapy strategies. Nutritional evaluation and support, preferential use of low-glucose degradation products solutions, and prescription of renin-angiotensin-aldosterone system acting drugs should also be part of the panel to improve diabetic care under peritoneal dialysis. 1. Diabetes Mellitus as a Leading Cause of End-Stage Renal Disease End-stage renal disease (ESRD) can be considered a health epidemic involving considerable human and financial resources [1, 2]. The number of patients with ESRD is increasing in the world due to aging populations, longer life expectancy, increasing access to renal replacement therapies (RRT), and higher incidence of diabetes mellitus (DM) and hypertension. Nowadays, dialysis is the dominating therapy to prevent death from uremia, in large part because donor kidneys are in short supply, and thus, the survival of these patients is still a major concern [3]. According to the United States Renal Data System (USRDS), in 2008, the adjusted rate of prevalent ESRD cases rose 1.9%, to 1.699 per million population (pmp), with 547.982 patients under treatment. The prevalent dialysis population increased 3.6%, reaching 382.343 patients and has grown 34.7% since 2000 [4]. Among these amazing numbers, DM is present as the leading cause of ESRD in the USA and most other countries. After a dramatic increase in the incidence rate of ESRD due to diabetes, peaking in 2006 at 160 pmp, this rate fell 3.2% and 1.5% in the following two years, reaching 153?pmp in 2008, but still corresponding to 43% of all incident patients [4]. Although their survival is still much worse than that of nondiabetic counterparts, mainly because of the preexisting severely compromised cardiovascular conditions, between 1994–1998 and 1999–2003, the 5-year diabetic patients survival improved 15.3% in hemodialysis (HD) and 27.1% in peritoneal dialysis (PD), reaching 29% and 27%, respectively [4]. In Europe, diabetes as the
Mutational Patterns Cannot Explain Genome Composition: Are There Any Neutral Sites in the Genomes of Bacteria?
Eduardo P. C. Rocha ,Edward J. Feil
PLOS Genetics , 2010, DOI: 10.1371/journal.pgen.1001104
Abstract:
The Non-Flagellar Type III Secretion System Evolved from the Bacterial Flagellum and Diversified into Host-Cell Adapted Systems
Sophie S. Abby ,Eduardo P. C. Rocha
PLOS Genetics , 2012, DOI: 10.1371/journal.pgen.1002983
Abstract: Type 3 secretion systems (T3SSs) are essential components of two complex bacterial machineries: the flagellum, which drives cell motility, and the non-flagellar T3SS (NF-T3SS), which delivers effectors into eukaryotic cells. Yet the origin, specialization, and diversification of these machineries remained unclear. We developed computational tools to identify homologous components of the two systems and to discriminate between them. Our analysis of >1,000 genomes identified 921 T3SSs, including 222 NF-T3SSs. Phylogenomic and comparative analyses of these systems argue that the NF-T3SS arose from an exaptation of the flagellum, i.e. the recruitment of part of the flagellum structure for the evolution of the new protein delivery function. This reconstructed chronology of the exaptation process proceeded in at least two steps. An intermediate ancestral form of NF-T3SS, whose descendants still exist in Myxococcales, lacked elements that are essential for motility and included a subset of NF-T3SS features. We argue that this ancestral version was involved in protein translocation. A second major step in the evolution of NF-T3SSs occurred via recruitment of secretins to the NF-T3SS, an event that occurred at least three times from different systems. In rhizobiales, a partial homologous gene replacement of the secretin resulted in two genes of complementary function. Acquisition of a secretin was followed by the rapid adaptation of the resulting NF-T3SSs to multiple, distinct eukaryotic cell envelopes where they became key in parasitic and mutualistic associations between prokaryotes and eukaryotes. Our work elucidates major steps of the evolutionary scenario leading to extant NF-T3SSs. It demonstrates how molecular evolution can convert one complex molecular machine into a second, equally complex machine by successive deletions, innovations, and recruitment from other molecular systems.
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