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Search Results: 1 - 10 of 22489 matches for " Anastácio Rodrigues "
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Cross-sectional study defines difference in malaria morbidity in two Yanomami communities on Amazonian boundary between Brazil and Venezuela
Marcano, Teodardo José;Morgado, Anastácio;Tosta, Carlos Eduardo;Coura, José Rodrigues;
Memórias do Instituto Oswaldo Cruz , 2004, DOI: 10.1590/S0074-02762004000400005
Abstract: it is well established that immunity to malaria is short-lived and is maintained by the continuous contact with the parasite. we now show that the stable transmission of malaria in yanomami amerindian communities maintains a degree of immunity in the exposed population capable to reduce prevalence and morbidity of malaria. we examined 508 yanomami amerindians living along orinoco (407) and mucajaí (101) rivers, on the venezuelan and brazilian amazon region, respectively. at orinoco villages, malaria was hyperendemic and presented stable transmission, while at mucajaí villages it was mesoendemic and showed unstable transmission. the frequency of plasmodium vivax and p. falciparum was roughly comparable in venezuelan and brazilian communities. malaria presented different profiles at orinoco and mucajaí villages. in the former communities, malaria showed a lower prevalence (16% x 40.6%), particularly among those over 10 years old (5.2% x 34.8%), a higher frequency of asymptomatic cases (38.5% x 4.9%), and a lower frequency of cases of severe malaria (9.2% x 36.5%). orinoco villagers also showed a higher reactivity of the immune system, measured by the frequency of splenomegaly (72.4% x 29.7%) and by the splenic index (71.4% over level 1 x 28.6), and higher prevalence (91.1% x 72.1%) and mean titer (1243 x 62) of antiplasmodial igg antibodies, as well as a higher prevalence (77.4% x 24.7%) and mean titer (120 x 35) of antiplasmodial igm antibodies. our findings show that in isolated yanomami communities the stability of malaria transmission, and the consequent continuous activation of the immune system of the exposed population, leads to the reduction of malaria prevalence and morbidity.
A Piece of a Puzzle of Haplotypes for the Indian Ocean Hawksbill Turtle  [PDF]
Rita Anastácio, Mário Jorge Pereira
Natural Resources (NR) , 2017, DOI: 10.4236/nr.2017.88034
Abstract: The Indian Ocean basin has much to reveal in what concerns marine turtles. Its regional management units (RMUs) are still lacking molecular data to define conservation strategies and priorities. Vamizi Island is one of the best known rookeries in the north of the Mozambique Channel. A mitochondrial DNA analysis revealed 14 haplotypes for the hawksbill turtle’s nesting and foraging in/near Vamizi, twelve of which were new in 2011. Though more studies inside the Channel are needed, Vamizi Island possibly contributes with hatchlings for other locations. More knowledge is important to define priorities for management units inside the Indian Ocean.
From the Challenges Imposed by Climate Change to the Preservation of Ecosystem Processes and Services  [PDF]
Rita Anastácio, Mário Jorge Pereira
Natural Resources (NR) , 2017, DOI: 10.4236/nr.2017.812048
Abstract:
Today, especially in countries that offer a satisfactory quality of life, it is easy to forget that we depend directly and indirectly on services provided by ecosystems such as quantity and quality of water, energy, food, health, and shelter. In less developed countries, the daily struggle for essential goods makes this dependency more real, despite the lack of knowledge, organization and/or financial resources to deal with the problems imposed on ecosystems by climate and anthropogenic changes. Protecting ecosystems by ensuring the services they provide has become highly dependent on our management capacity, our understanding of its functioning, and our capacity for persuasion. Demographic pressure and individualism compromise the survival of various species, including our own, and create pressures under governments and the stability of nations. The notion of facing a global challenge has awakened in the scientific community the need to focus on developing global strategies that change the mind-sets of decision makers, industry, governments and markets. Global knowledge networks and experts are being built to mitigate problems on a global scale. In this mini review, the authors make a brief visit to documents, intergovernmental initiatives, and platforms that have been built with the aim of contributing to promote a resolution for the global problems.
Epilepsia: dados básicos de um servi?o público do Rio de Janeiro
Kodjaoglanian, Vera Lúcia;Souza, Edinilsa Ramos de;Lopes, José Ramon Rodrigues Arras;Morgado, Anastácio Ferreira;
Cadernos de Saúde Pública , 1986, DOI: 10.1590/S0102-311X1986000200009
Abstract: after a brief review over the role of epilepsy in public health, including its overall prevalence rates, the authors describe a study carried out in a public hospital's out-patient clinic in rio de janeiro. from november-1979 to june-1984, 782 patients, whose files served as source of data, were included in the study. from these 782 patients, 532 (68%) fulfilled gastaut's electro-clinic criteria for epilepsy, being 416 ( 78,2%) in the group of generalized, 115 (21,6%) in the group of partial or focal and 1 (0,2%) with unilateral presentation. other 69 patients were considered as having epilepsy, but did not fulfill gastaut's criteria, due to associations of two or more types of epilepsy. therefore, of 782 patients, 601 (76,9%) had the diagnosis of epilepsy; 58 of them (7,4%) had epilepsy-like conditions, that is, fainting, migraine, "gasping", sleep-walking;33 (4,2%)of them had a well-defined mental illness but an anti-convulsivant drug treatment was initiated before they were send to the mentioned clinic; in 90 (11,5%) patients the investigation was not accomplished. the onset of the first signs of epilepsy did happen before the age of 20 years in 78,4% patients and in 31,1% of them until the 4th year of ufe. this negative correlation of increasing age and first signs of disease onset was statistically significant (p < 0,01).
Epidemia de suicídio entre os Guaraní-Kaiwá: indagando suas causas e avan?ando a hipótese do recuo impossível
Morgado, Anastácio F.;
Cadernos de Saúde Pública , 1991, DOI: 10.1590/S0102-311X1991000400009
Abstract: the suicide of six young guaraní-kaiwá indians within the timespan of two weeks is enough to fulfill any criteria to define an epidemic. in a total population of 7,500 individuals, the available data account for 52 cases of suicide between 1987 and august 1991. the epidemic is more dramatic among the kaiwá subgroup among which 14 individuals died in 1990 and a number of suicides were reported for the first semester of 1991. for both sexes, most deaths were observed in the age group 12-20 years. the author advances the hypothesis of the impossible return according to which, under extreme pressure exerted by western society, they see no possibility of returning to their traditional way of living. under circumstances of extreme self-devaluation, suicide becomes the last alternative for the survival of their culture. suicide epidemics have been reported among amerindians in other countries suffering from the same kind of pressure. in brazil and also in other countries, other tribes have been urbanized and yet did not experience the tragedy which the kaiwá are going through because they had some kind of acceptable insertion in the national society.
Spy out to Protect: Sensing Devices for Wildlife Virtual Fencing  [PDF]
Rita Anastácio, Sérgio Cardoso, Mário Jorge Pereira
Open Journal of Ecology (OJE) , 2018, DOI: 10.4236/oje.2018.83013
Abstract: To avoid wildlife-human conflict several solutions are used, like electrical fences, the most expensive solution. Nowadays, technology enables alternative and cheaper approaches for conservation projects. A technological device was developed to detect elephants, moving on their habitat, and predict and react by avoiding confrontation with man. The devices were tested in field experiments, and proved to be efficient in capturing floor vibration, and air-sound signals. Collected data also enabled the estimation of the vibration-source by calculus (using triangulation), revealing the importance of the methodology for real-time location and tracking of high mass animals (e.g. elephants). Building up a mesh of devices, separated 25 m from each other, is estimated as possible to monitor and identify different animals (by discriminating patterns) in an area, like a virtual fencing system. Though the devices may be effective for animal behaviour research, or even animal communication analysis, or other Biology field, other applications outside Biology are possible for them, like monitoring of: rock-falling, micro seismic railway, infrastructures, and people movements.
A??o do citrato de sildenafil sobre a fun??o uretral de ratas com desnerva??o vesical
Suaid, Haylton Jorge;Cologna, Adauto José;Martins, Antonio Carlos Pereira;Tucci Jr, Silvio;Rodrigues, Antonio Antunes;Dias Neto, José Anastácio;
Acta Cirurgica Brasileira , 2003, DOI: 10.1590/S0102-86502003001200010
Abstract: background: nitric oxide acts as a non-adrenergic and non-cholinergic neurotransmitter in the bladder and urethra. it activates the guanilatocyclase that transforms gmp in cgmp which promotes muscle relaxation. sildenafil citrate increases the cgmp concentration by inhibiting the phosphodiesterase responsible for its hydrolysis. methods: 6 female rats weighing 200g were anesthetized with urethane at a dosage of 1.25mg/kg. all animals underwent cystostomy with a catheter p50 connected by a y to an infusion pump and to a polygraph narco-biosystem. the cystometry was performed trice in each animal: right after the cystostomy, after surgical of bladder denervation and 1h after gastric infusion of 1mg/kg of sildenafil citrate. maximum (map) and minimum (mip) vesical pressure were compared in the following moments: i - before bladder denervation, ii - after bladder denervation and iii - after bladder denervation and sildenafil administration. wilcoxon test was used for a level of significance of 5%. results: mean values of map were: i - 86.6±10.1, ii - 42.6±15.0 and iii - 30.8±12.4. the corresponding values of mip were: : i - 72.1±18.9, ii - 31.1±9.8 and iii - 14.5±9.5. the comparison between map and mip in each moment showed difference only in moment iii (p<0.01). for map p value was <0.002 in ixii and ixiii and >0.05 in iixiii. for mip the p values were <0.004 in ixii, <0.002 in ixiii and <0.01 in iixiii. conclusion: 1) bladder denervation reduces maximum and minimum urethral pressure; 2) sildenafil citrate reduces the minimum urethral pressure widening the interval between the peak and bottom pressures; and, 3) sildenafil citrate does not interfere on the peak urethral pressure after bladder denervation.
Mastoidectomia: parametros anat?micos x dificuldade cirúrgica
Pereira Júnior, Anastácio Rodrigues;Pinheiro, Sebasti?o Diógenes;Castro, José Daniel Vieira de;Ximenes Filho, Jo?o Arag?o;Freitas, Marcos Rabelo de;
Arquivos Internacionais de Otorrinolaringologia , 2012, DOI: 10.7162/S1809-48722012000100008
Abstract: introduction: the lowered temporal meninges and/ or anterior sigmoid sinus are contiditions that can determine surgical difficulties in performing mastoidectomy. objective: to correlate in the tomography the extent of the prolapse of the sigmoid sinus and of temporal meninges with the surgical difficulty in the mastoidectomy. method: the tomographic measurements of prolapse sigmoid and of temporal meninges were correlated with the presence or non-presence of the surgical difficulty observed during the mastoidectomy procedure in patients with ostomatoiditis chronic (n=30). form of study: contemporary cohort transverse. results: in 10 patients were observed surgical difficulty distributed as: due to prolapse of the sigmoid sinus (n = 2) or temporal meninges prolapse (n = 7) or both (n = 1). in patients in which the surgical difficulty was due to sigmoid sinus prolapse, the tomography distance of the anterior border of the sigmoid sinus to posterior wall of external auditory canal was lower than 9 mm. in patients in which surgical difficulty was due to temporal meninges prolapse, the tomographic distance to the upper plane of the petrous bone was 7 mm. conclusion: the computerized tomography distance between the temporal meninges and the upper plane of the petrous bone 7 mm and the distance of the anterior border of the sigmoid sinus to posterior wall of external auditory canal was lower than 9 mm are predictive to the surgical difficulties to perform mastoidectomy.
Eletroforese de proteínas e isoenzimas em sementes de Copaifera Langsdorffii Desf. (leguminosae caesalpinioideae) envelhecidas artificialmente
Carvalho, Dulcinéia de;Ferreira, Robério Anastácio;Oliveira, Luciana Magda de;Oliveira, Alessandro Fabiano de;Gemaque, Rin? Celeste Rodrigues;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000100003
Abstract: electrophoresis has been used to aid the evaluation of physiological seed quality of forest species, as isozymes provide fast responses. seeds of copaiba (copaifera langsdorffii) were artificially aged for 0, 24, 48, 72 and 96 hours, in a germination chamber (42o c and 100% ur). the objective of this research was to evaluate possible changes in the electrophoretic patterns of proteins and isozymes during the artificial aging. the artificial aging reduced the germination and vigor of c. langsdorffii seeds, but vigor was affected faster than germination. the electrophoretic patterns showed no difference in the content of soluble and storage proteins, but for esterase and peroxidase isozymes there was reduction in the activity with aging.
Mastoidectomy: anatomical parameters x surgical difficulty
Pereira Júnior, Anastácio Rodrigues,Pinheiro, Sebasti?o Diógenes,Castro, José Daniel Vieira de,Ximenes Filho, Jo?o Arag?o
International Archives of Otorhinolaryngology , 2012,
Abstract: Introduction: The lowered temporal meninges and/ or anterior sigmoid sinus are contiditions that can determine surgical difficulties in performing mastoidectomy. Objective: To correlate in the tomography the extent of the prolapse of the sigmoid sinus and of temporal meninges with the surgical difficulty in the mastoidectomy. Method: The tomographic measurements of prolapse sigmoid and of temporal meninges were correlated with the presence or non-presence of the surgical difficulty observed during the mastoidectomy procedure in patients with ostomatoiditis chronic (n=30). Form of study: Contemporary cohort transverse. Results: In 10 patients were observed surgical difficulty distributed as: due to prolapse of the sigmoid sinus (n = 2) or temporal meninges prolapse (n = 7) or both (n = 1). In patients in which the surgical difficulty was due to sigmoid sinus prolapse, the tomography distance of the anterior border of the sigmoid sinus to posterior wall of external auditory canal was lower than 9 mm. In patients in which surgical difficulty was due to temporal meninges prolapse, the tomographic distance to the upper plane of the petrous bone was 7 mm. Conclusion: The computerized tomography distance between the temporal meninges and the upper plane of the petrous bone 7 mm and the distance of the anterior border of the sigmoid sinus to posterior wall of external auditory canal was lower than 9 mm are predictive to the surgical difficulties to perform mastoidectomy.
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