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Search Results: 1 - 10 of 476382 matches for " Rodrigo A Dias "
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Does Evolution matter?: a case study in Brazil of the effects of an evolutionary-thinking academic atmosphere in postgraduate students' belief in God/religious belief
Dias, Ivan A.;Willemart, Rodrigo H.;Marques, Antonio C.;
Anais da Academia Brasileira de Ciências , 2012, DOI: 10.1590/S0001-37652012005000023
Abstract: although the theory of evolution is more than 150 years old, a substantial proportion of the world population does not mention it when explaining the origin of human beings. the usual alternative conception is offered by creationism, one of the main obstacles to full acceptance of evolution in many countries. national polls have demonstrated that schooling and religiosity are negatively correlated, with scientists being one of the least religious professionals. herein we analyzed both (1) the profile of 1st semester undergraduate students and (2), thesis and dissertations, concerning religious and evolutionary thoughts from biology and veterinary schools at the largest university of south america. we have shown that students of biology are biased towards evolution before they enter university and also that the presence of an evolutionary-thinking academic atmosphere influences the deism/religiosity beliefs of postgraduate students.
Direito Comunitário: O Apogeu do Velho Continente e o Longo Caminho da América Latina
Rodrigo Dias Rodrigues de Mendon?a Fróes
Revista de Direito dos Monitores da Universidade Federal Fluminense , 2009,
Abstract: O texto aborda a evolu o do Direito Comunitário desde o seu surgimento na Europa até a sua forma contemporanea, analisando, ainda, as possibilidades de uma bem sucedida implementa o de suas bases na América Latina.
Characterization of ZSM-5 modified with niobium pentoxide: the study of thiophene adsorption
Cavalcanti, Rodrigo M.;Barros, Ivoneide de C. L.;Dias, José A.;Dias, Sílvia C. L.;
Journal of the Brazilian Chemical Society , 2013, DOI: 10.1590/S0103-50532013000100007
Abstract: zsm-5 adsorbents impregnated with nb2o5 were applied in the sulfur removal in the form of thiophene, refractory substance of difficult removal of liquid fuels. for this purpose, a model fuel containing iso-octane contaminated with thiophene in concentrations of 877.5 to 1155 ppmw was prepared. the samples were characterized by x-ray diffractometry (xrd), fourier transform infrared (ftir) and fourier transform-raman (ft-raman) spectroscopies for confirmation of the adsorbents, being prioritized the adsorption study with that containing 5 wt.% of niobium pentoxide, because it showed a greater capacity for removal of thiophene. the best results of adsorption were achieved at 353 k, a longer time to reach equilibrium was observed. under these conditions, the best kinetic fitting was achieved using the equation of pseudo-second order, demonstrating the domain of the phenomenon of chemisorption. while under lower temperatures, the diffusion model presented a better approximation of the experimental results. also, the increasing of temperature did enhance spontaneous processes.
Avalia??o da eficiência térmica de telha reciclada à base de embalagens longa vida
Fiorelli, Juliano;Morceli, José A. B.;Vaz, Rodrigo I.;Dias, Antonio A.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2009, DOI: 10.1590/S1415-43662009000200015
Abstract: this paper presents a study of the influence of roof tiles made of recycled long-life packaging (brand-name ibaplac?) on the thermal comfort of zootechnical facilities. the research was conducted at unesp's experimental campus at dracena, state of s?o paulo, brazil. four prototypes were built, each with an area of 28 m2. one prototype was covered with roof tiles made of recycled long-life packing material and three reference prototypes were roofed with ceramic tiles, ceramic tiles painted white and fiber/cement tiles (brasilit?), respectively. black globe thermometers and dry and wet bulb thermometers were installed inside the prototypes. temperatures inside the structures were recorded in the summer of 2006/2007 over a 90-day period. a descriptive statistical analysis was made, based on the mean values of black globe temperature and humidity index, radiant thermal load and temperature-humidity index of the period. the results obtained indicated that the thermal behavior of the recycled tile was similar to that of the ceramic tiles.
New insights about host response to smallpox using microarray data
Gustavo H Esteves, Ana CQ Simoes, Estevao Souza, Rodrigo A Dias, Raydonal Ospina, Thiago M Venancio
BMC Systems Biology , 2007, DOI: 10.1186/1752-0509-1-38
Abstract: We used KEGG pathways annotations to define groups of genes (or modules), and subsequently compared them to macaque survival times. This technique provided additional insights about the host response to this disease, such as increased expression of the cytokines and ECM receptors in the individuals with higher survival times. These results could indicate that these gene groups could influence an effective response from the host to smallpox.Macaques with higher survival times clearly express some specific pathways previously unidentified using regular gene-by-gene approaches. Our work also shows how third party analysis of public datasets can be important to support new hypotheses to relevant biological problems.Large scale gene expression analysis with microarray technology is expanding and generating a large amount of high quality, publicly available data. In the present work we analyzed a dataset derived from monkeys infected by smallpox, published by Rubins et al [1]. Smallpox is a lethal disease that was endemic in many parts of the world until eradicated by a massive immunization program developed by the World Health Organization. Its fatality rate was estimated to be 30%, and the survivors often had disfiguring scars [2].There are serious concerns about the use of smallpox as a bioweapon [3,4]. Recently, some health care workers were vaccinated by the UK government for the analysis of antibody responses [5]. Pox viruses display unique abilities to interfere with the host immune system, producing immune modulators [6] and there are at least 16 viral genes involved in combating the host immune response [7]. The original study's goal was to analyze the evolution of the gene expression of the peripheral blood cells of variola-infected monkeys, so as to clarify the biological processes associated with host-pathogen interactions [1].Among the important results was the absence of a TNF-α/NF-κB-activated transcriptional mechanism during systemic infection, which could
Isolated splenic metastasis from lung squamous cell carcinoma
Andre R Dias, Rodrigo A Pinto, Juliana N Ravanini, Renato M Lupinacci, Ivan Cecconello, Ulysses Ribeiro
World Journal of Surgical Oncology , 2012, DOI: 10.1186/1477-7819-10-24
Abstract: Isolated splenic metastasis from lung cancer is an exceedingly rare event. Here, we present the case of an 82-year-old male with previously excised lung squamous cell carcinoma who developed local recurrence and a splenic metastasis. This is only the 17th known report of isolated splenic metastasis, including English and non-English literature.In April 2006, an 82-year-old former smoker male was investigated due to persistent cough. A Computed Tomographic (CT) scan of the chest showed a 2.2 × 1.5 cm nodule in the right mid-lung. Bronchoscopic biopsies revealed a moderately differentiated Squamous cell carcinoma (Figure 1). Preoperative investigation showed no mediastinal lymphadenopathy or distant metastatic disease.The patient underwent a right bilobectomy confirming a moderately differentiated squamous cell carcinoma with large polygonal cells, keratinization, intercellular bridges and keratin pearls (pT2pN2). As margins were scanty, adjuvant chemo-radiation was indicated (4 cycles of Carboplatin and Paclitaxel and 50 Gy). Patient remained asymptomatic and sixteen months after surgery a CT scan revealed a 1 × 1 cm cystic lesion in the spleen (Figure 2). Follow-up was lost and a new CT scan was only performed one year later. This exam revealed an interlobular thickening and an enlargement of the splenic lesion now measuring 6.5 × 6.4 cm (Figure 2). The patient was then referred to palliative chemotherapy with Gemcitabine and received 4 cycles (3 of them with reduced dose due to mielotoxicity). A new CT scan showed stability of the pulmonary disease but progress of the splenic lesion (7.8 × 7.8 cm - Figure 2). Splenectomy was then indicated. During preoperative period the patient presented an acute bowel obstruction. A CT scan of the abdomen and pelvis showed an abrupt obstrutive point at the level of the left colon and the patient underwent an urgent laparotomy. Surgical findings consisted of the large splenic lesion without invasion of adjacent structures and a le
Acúmulo de nutrientes e método para estimar doses de nitrogênio e de potássio na fertirriga??o do piment?o
Fontes, Paulo Cezar R.;Dias, Emerson N.;Gra?a, Rodrigo N.;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000200022
Abstract: shoot nutrient uptake curves were characterized and a model was developed to estimate nitrogen and potassium rates to be applied in sweet pepper (capsicum annuum l.) fertigation in unheated greenhouse. the experiment was carried out from march to december using a randomized blocks design with 16 treatments and 6 replicates. each treatment corresponded to a sampling time accomplished every 14 days from transplanting (dat) up to 224 dat. at that time, fruit yield and shoot dry weight were 51960 and 6130 kg ha-1 respectively. total nutrient accumulation in the shoot, expressed in kg ha-1, was: 247 for k, 193 for n, 114 for ca, 42 for mg, 23 for p, 23 for s, 1.2 for fe, 0,31 for b, 0.29 for cu, 0.27 for zn and 0,26 for mn. uptake curves and uptake rates (ta) are presented for each nutrient. based upon ta, a model is proposed to estimate n and k rates to apply in pepper plant fertigation in unheated greenhouse.
Efeitos de baixas doses de radia??o-X no desenvolvimento do sistema nervoso central: estudo experimental em ratos
Lins, Liliane;Gomes, Laís;Gomes, Lis;Trindade, Marcele;Dias, Leonardo;Bragan?a, Ricardo;Pimentel, Rodrigo;
Radiologia Brasileira , 2008, DOI: 10.1590/S0100-39842008000100012
Abstract: objective: the present study analyzes the consequences of x-irradiation for the development of the nervous system of rat fetuses. materials and methods: the sample included ten eight-week-old, pregnant rattus norvegicus albinus, wistar. five female rats constituted the control group and other five had their abdominal region exposed for 30 seconds to a single 0.3 gy radiation dose from a 70 kv, 10 ma gnatus odontological apparatus. at the 17th gestational day both groups were submitted to hysterectomy. selected sections were examined for comparative brain analysis of both groups. results: the clinical evaluation demonstrated no morphological difference between the control and the experimental groups. twenty-seven percent of the animals in the experimental group presented mild brain hemorrhage, while 73% of the animals had severe cerebral cortex hemorrhage and nervous tissue damage. none of the animals in the control group presented cerebral hemorrhage or nervous tissue damage. conclusion: these evidences demonstrate that low x-radiation doses may cause brain hemorrhage and, consequently, nervous tissue damage.
Produ??o extemporanea de amora-preta
Antunes, Luis Eduardo Corrêa;Trevisan, Renato;Gon?alves, Emerson Dias;Franzon, Rodrigo Cezar;
Revista Brasileira de Fruticultura , 2006, DOI: 10.1590/S0100-29452006000300020
Abstract: the fruit culture, in the state of minas gerais, has been increased and diversified considerably, during the last years. blackberry appeared as an important option to fruit growers; however there are no trials performed in that state. the objective of this work was to evaluate the summer pruning effects on off season production of blackberries varieties. this work was carried out in epamig - "fazenda experimental" in caldas, state of minas gerais, brazil. fruit weight, estimated production and productivity per plant and per hectare (ha) were evaluated for seven cultivars (brazos, comanche, ébano, caingangue, guarani, tupy and cherokee) and one selection (97). the results lead to conclude that summer pruning induced less production in all varieties. highest off season production was obtained in 'comanche' (3, 26 t/ha), followed by 'tupy' (2,93 t/ha).
Incidência de cólica no lactente e fatores associados: um estudo de coorte
Saavedra, Maria A.L.;Costa, Juvenal S. Dias da;Garcias, Gilberto;Horta, Bernardo L.;Tomasi, Elaine;Mendon?a, Rodrigo;
Jornal de Pediatria , 2003, DOI: 10.1590/S0021-75572003000200005
Abstract: objective: to assess the incidence of infantile colic and its determinants. methotds: between may and july 1999, the research team performed daily visits to the three main maternities of pelotas. all women were interviewed after the delivery and their infants were targeted for follow-up at three months. colic was defined according to wessel. the following risk factors were evaluated: social class, mother's educational level, parents' age, parents' divorce, changes in the parents' relationship during pregnancy, type of delivery, reproductive history, quality of prenatal care, previous abortion, previous stillbirths, previous newborn with health problems, gender, and infant's feeding pattern. chi-square test was used to compare proportions and conditional logistic regression was applied in the multivariate model. results: we managed to follow 1,086 of the 1,195 infants. at the three months visit, 80.1% of the mothers reported that their infants had had colic. on the other hand, only 16.3% was considered as having colic according to wessel criteria. mother's educational level, father's age, type of delivery and breast-feeding duration remained in the multivariate model. even after controlling for possible-confounding factors, the chances of having colic was 1.86 times higher among non-breastfed infants than among breastfed infants. conclusion: most mothers misclassify the occurrence of colic. breastfeeding is the main protective factor.
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