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Search Results: 1 - 10 of 116440 matches for " Ricardo I.;Lopes "
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Estratifica??o vertical de formigas em cerrado strictu sensu no Parque Estadual da Serra de Caldas Novas, Goiás, Brasil
Campos, Ricardo I.;Lopes, Cauê T.;Magalh?es, Wagner C. S.;Vasconcelos, Heraldo L.;
Iheringia. Série Zoologia , 2008, DOI: 10.1590/S0073-47212008000300004
Abstract: formicidae is an abundant group in the soil and is also well distributed in all vegetation strata, representing a good model for studies on vertical stratification of the fauna. the aim of this study was to verify a possible stratification of ant assemblages inhabiting the soil, the lower and the higher vegetation strata. data was collected in the serra de caldas novas state park, in an area of cerrado strictu sensu. ant collection was performed using pitfall traps. a total of 11 traps were placed in the soil, 17 in the lower vegetation stratum (dominated by shrubs and small trees) and 23 in the higher vegetation stratum (dominated by taller, mature trees). forty-nine species of ants from 15 genera and five subfamilies were collected. accumulation curves indicated that there is 37.5% more species in the soil than in mature trees and 35% more species in mature trees than in shrubs/young trees. there was not a clear vertical stratification between the soil and the two vegetation strata. therefore, the species present in the vegetation tended to represent a nested subset of those found in the soil. even without a clear vertical stratification, the diversity of ants in the cerrado vegetation is high, and part of this diversity appears to be explained by the fact that some species are specialized in nesting and/or foraging in the soil, while others in the vegetation.
Transperitoneal versus extraperitoneal laparoscopic radical prostatectomy during the learning curve: does the surgical approach affect the complication rate?
Siqueira Jr., Tiberio M.;Mitre, Anuar I.;Duarte, Ricardo J.;Nascimento, Humberto;Barreto, Francualdo;Falcao, Evandro;Lopes, Roberto I.;Srougi, Miguel;
International braz j urol , 2010, DOI: 10.1590/S1677-55382010000400008
Abstract: purpose: to compare the perioperative complication rate obtained with the transperitoneal laparoscopic radical prostatectomy (tlrp) and with the extraperitoneal lrp (elrp) during the learning curve (lc). materials and methods: data of the initial 40 tlrp (group 1) were retrospectively compared with the initial 40 elrp (group 2). each group of patients was operated by two different surgeons. results: the overall surgical time (175 min x 267.6 min; p < 0.001) and estimated blood loss (177.5 ml x 292.4 ml; p < 0.001) were statistically better in the group 1. two intraoperative complications were observed in group 1 (5%) represented by one case of bleeding and one case of rectal injury, whereas four complications (10%) were observed in group 2, represented by two cases of bleeding, one bladder and one rectal injuries (p = 0.675). open conversion occurred once in each group (2.5%). overall postoperative complications were similar (52.5% x 35%; p = 0.365). major early postoperative complications occurred in three and in one case in group 1 and 2, respectively. group 1 had two peritonitis (fecal and urinary), leading to one death in this group. conclusions: no statistical differences in overall complication rates were observed. the transperitoneal approach presented more serious complications during the early postoperative time and this fact is attributed to the potential chance of intraperitoneal peritonitis not observed with the extraperitoneal route.
On the Concept of Energy: Conservation and Transformation versus Equivalence
RICARDO LOPES COELHO
Review of Science, Mathematics and ICT Education , 2012,
Abstract: Many studies have shown that the concept of energy is a problem for teaching. It is in general taught that energy can neither be created nor destroyed but only transformed. Based on the original papers of the discoverers of energy, it will be shown in the present paper that these discoverers did not find anything which is indestructible and transformable. In distinguishing between the treatment of phenomena and the theories carried out by the discoverers of energy, it can be concluded that they established equivalences between different domains, such as motion and heat or position and motion. Taking this idea of equivalence, it will be finally shown that some of the problems pointed out by science teaching experts can be overcome.
Documenta o notarial e tabeli es públicos no Porto na centúria de trezentos
Joaquim Lopes,Ricardo Seabra
CEM : Cultura, Espa?o & Memória , 2012,
Abstract: This article is the result of a Research Fellowship from FCT, which proposed the survey and transcription of some notarial documents compiled in the Livros dos Originais of the Porto Cathedral Chapter’reserve, from the Porto District Archive , dating from the second quarter to the end of the 1300’s. The importance of these documents for a better understanding of the Portuguese medieval notarial activity shifted the initial focus of this project to include, not only on a palaeographic study of the corpus, but also its diplomatic analysis.
Comunica??es uma contribui??o ao aprimoramento da informa??o contábil, no tocante à mensura??o do resultado contábil da produtora cinematográfica
Cardoso, Ricardo Lopes;Szuster, Natan;
Revista Contabilidade & Finan?as , 2003, DOI: 10.1590/S1519-70772003000200008
Abstract: this article presents a proposal to improve the criteria for measuring the accounting income of a movie producer active in the brazilian market. our interest in this subject is motivated by our admiration for cinema, and particularly for national productions. the need to improve information was observed as a result of the lack of standards for accounting procedures to be observed by the national producers. in this study, we develop a particular accounting model considering the production of a movie as a long-term contract, while income is determined in accordance with the actual creation of revenues.
Chronic penile strangulation
Lopes, Roberto I;Lopes, Silvia I;Lopes, Roberto N;
International braz j urol , 2003, DOI: 10.1590/S1677-55382003000400007
Abstract: chronic penile strangulation is exceedingly rare with only 5 cases previously reported. we report an additional case of progressive penile lymphedema due to chronic intermittent strangulation caused by a rubber band applied to the penile base for 6 years. a 49-year-old man presented incapacity to exteriorize the glans penis. for erotic purposes, he had been using a rubber-enlarging band placed in the penile base for 6 years. with chronic use, he noticed that his penis swelled. physical examination revealed lymphedema of the penis, phimosis and a stricture in the penile base. the patient was submitted to circumcision and the lymphedema remained stable 10 months postoperatively. chronic penile incarceration usually causes penile lymphedema and urinary disturbance. treatment consists of removal of foreign devices and surgical treatment of lymphedema.
Chronic penile strangulation
Lopes Roberto I,Lopes Silvia I,Lopes Roberto N
International braz j urol , 2003,
Abstract: Chronic penile strangulation is exceedingly rare with only 5 cases previously reported. We report an additional case of progressive penile lymphedema due to chronic intermittent strangulation caused by a rubber band applied to the penile base for 6 years. A 49-year-old man presented incapacity to exteriorize the glans penis. For erotic purposes, he had been using a rubber-enlarging band placed in the penile base for 6 years. With chronic use, he noticed that his penis swelled. Physical examination revealed lymphedema of the penis, phimosis and a stricture in the penile base. The patient was submitted to circumcision and the lymphedema remained stable 10 months postoperatively. Chronic penile incarceration usually causes penile lymphedema and urinary disturbance. Treatment consists of removal of foreign devices and surgical treatment of lymphedema.
Polimorfismo isozimático e potencial de utiliza??o das isozimas como marcadores genéticos em aceroleira
Lopes, Ricardo;Bruckner, Claudio Horst;Lopes, Maria Teresa Gomes;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000200006
Abstract: the west indian cherry (malpighia emarginata dc.) is a crop in expansion in brazil mainly due to high fruit vitamin c content. however, there is still little information about the species. the objective of this study was to determine the activity and the polymorphism of isozymes from a collection of west indian cherry plants. idh, mdh, est, pod, acp, got, pgm and pgi isozymes were studied. starch gel horizontal electrophoresis and different gel/electrode buffers were used. number of loci and alleles involved in genetic control of these isozymes were identified. idh was dimeric and had one locus with two alleles. pgm was monomeric and had two loci, with two and four alleles. pod and est were monomeric and had one and two loci, respectively, all with two alleles each. mdh had two polymorphic loci, one which was monomeric and one dimeric, both with two alleles each. got was polymorphic but its inheritance and genetic control was not determined. polymorphisms of idh, mdh, pod, est, got and pgm showed potential as genetic markers in west indian cherry in studies of conservation and breeding.
Adaptabilidade e estabilidade de híbridos de famílias endogamicas de milho, obtidos pelo método dos híbridos crípticos
Lopes, Maria Teresa Gomes;Viana, José Marcelo Soriano;Lopes, Ricardo;
Pesquisa Agropecuária Brasileira , 2001, DOI: 10.1590/S0100-204X2001000300012
Abstract: the behavior of endogamic hybrid maize families was assessed using the cryptic hybrids method. this work was conduced by the maize breeding program at departamento de biologia of the universidade federal de vi?osa in brazil. twenty-two environments were used to characterize the hybrids using eberhart & russel and carneiro methods. using the first method, 15 hybrids were identified with yield higher than the general mean. among them, 53.3% had general adaptability and high stability (84-6, 86-1, 86-19, 86-11, 86-15, 86-21, 86-27 and 86-10), and 20% had specific adaptation to favorable environments and high stability (86-22, 85-2 and 84-5). the hybrids 85-1, 85-3 and 86-2 had general adaptability associated with low stability, and also corresponding to a fraction 20% of the most productive hybrids. the last hybrid (86-8) corresponded to 6.7% and had specific adaptation to favorable environments and low stability. from the analysis using carneiro's method, the hybrids 8622, 868, 845, 852 and 8619 were identified as the most adapted to favorable environments. the hybrids 86-11, 85-3, 86-27 and 86-2 were adaptable to unfavorable environments.
Estima??o da taxa de cruzamento da aceroleira com base em dados isoenzimáticos
Lopes, Ricardo;Bruckner, Cláudio Horst;Lopes, Maria Teresa Gomes;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000300013
Abstract: acerola (malpighia emarginata) is a species of malpighiaceae family that produces fruits with high vitamin c content. the increasing demand for acerola and its derived products caused the search for improved varieties to expansion of commercial plantation. the objective of this work was to gain information about a breeding system from an acerola population located in visconde do rio branco, mg, brazil. ten families originating from seeds of a natural pollination were used. plants were assayed for seven isoenzymatic loci (idh, mdh-1, mdh-2, pgm-1, pgm-2, est1 and pod) and the data were analyzed using a mixed mating model. multilocos outcrossing rate estimate for population did not differ statistically from 1.00, whereas estimates ranged from 0.68 to 1.00 between families, and two estimates were significantly different from 1.00. acerola is predominately allogamous and outcrossing rate varied between families; this fact should be taken into consideration in further breeding programs and germoplasm conservation.
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