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Search Results: 1 - 10 of 51197 matches for " Rogério Antonio;Rocha "
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Longitudinal distribution and seasonality of macroalgae in a subtropical stream impacted by organic pollution
Peres, Cleto Kaveski;Branco, Ciro Cesar Zanini;Krupek, Rogério Antonio;Rocha, José Celso;
Acta Limnologica Brasiliensia , 2010, DOI: 10.4322/actalb.02202009
Abstract: aim: this study was carried out to assess longitudinal and temporal distribution and the effects of organic pollution on macroalgal communities in a subtropical stream; methods: the occurrence and percent cover of stream macroalgae were investigated during seasonal period in four sampling sites along the course of the cascavel stream, in paraná state, subtropical area of brazil. sampling sites were randomly chosen; however, their location in relation to urban organic pollution sources was taken into consideration. besides, several stream variables usually related to organic pollution in aquatic ecosystems were measured; results: eleven macroalgal taxa were found during the samplings. chlorophyta was the prevailing division (4 species or 36.3% of the total richness), followed by cyanophyta and rhodophyta (3 or 27.3%) and heterokontophyta (1 or 9.1%). analysis of variance (anova) showed no significant differences in species diversity, percent cover and diversity index among seasons or the sampling sites. in addition, species diversity was not correlated with any environmental variable in particular. on the other hand, the relative composition of the stream macroalgal communities showed wide spatial and temporal variation. thus, chlorophyta had higher values of richness and percent cover in sampling site with higher levels of organic pollution, while rhodophyta was never found in this segment. taking seasonality into consideration, chlorophyta had higher values of percent cover in winter, but rhodophyta and cyanophyta in spring and fall, respectively; conclusions: in general terms, in this study macroalgal community structures were slightly affected by organic pollution, mainly by increase in richness and percent cover of chlorophyta associated with the absence of rhodophyta in the most polluted sampling site. the analysis of the richness throughout the stretch of the stream showed that the highest values were found in the intermediate part, being partly in accordance
Diversidade de espécies e ocorrência estacional de afídeos (Hemiptera: Aphididae) em um pomar de citros em Taiúva, SP
Rocha, Kelly Cristina Gon?alves;Busoli, Antonio Carlos;Veronezzi, Fábio Rogério B.;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000300021
Abstract: the aphids are important pests of the citrus orchards, as they act as vectors of the phytopathogenic virus. the research aimed to estimate the diversity of the species of winged aphids and the occurrence in each season in a citrus orchard of citrus in taiúva, state of s?o paulo. the yellow trap type moericke and yellow trap stick were used for the catches, on four weeks samplings, in each season, from april/2004 until april/2005. the species colleted were aphis gossypii glover, aphis spiraecola patch, toxoptera citricida kirkaldy e toxoptera aurantii (boyer de fonscombe), rhopalosiphum maidis (fitch), pentalonia nigronervosa coquerel, uroleucon ambrosie (thomas) e acyrthosiphon bidenticola smith. the species a. spiraecola and t. citricida were the most abundant, and classificated as common species. a peak of winged applied capture was during the autumn/2004, and the yellow trap with water captured more aphids than the yellow trap stick.
Estimating leaf appearance rate and phyllochron in safflower (Carthamus tinctorius L.)
Streck, Nereu Augusto;Bellé, Rogério Antonio;Rocha, Edileusa Kersting da;Schuh, Mariangela;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600036
Abstract: safflower may be an interesting option for the flower market, either as fresh or dried cut flower. estimating the leaf appearance rate and the phyllochron (the time interval between the appearance of successive leaves) is important for calculating the number of emerged leaves (nl) on the plant, which is an excellent measure of plant development. the objective of this study was to estimate the leaf appearance rate and the phyllochron in safflower (carthamus tinctorius l.). an experiment was conducted in santa maria, rs, brazil, inside an 8 x 15m plastic greenhouse. sowing was on 03 october 2003 and emergence was on 08 october 2003. the experimental design was a randomized complete block design with three replications. the main stem nl was measured twice a week from 24 october 2003 to 15 november 2003 in four plants per replication. daily growing degree days above a base temperature (5°c) and accumulated thermal time (tt) were calculated. the nl was linearly regressed against tt. the angular coefficient of the linear regression is the lar (leaves/ °c day) and the phyllochron (°c days/leaf) was estimated by the inverse of the angular coefficient of the linear regression. the lar was 0.0467 ± 0.0203 leaves/ °c day and the phyllochron was 25.5 ± 14.6°c days/leaf.
Etiologia e tratamento das doen as periimplantares
Rogério de Lima Romeiro,Rosilene Fernandes da Rocha,Antonio Olavo Cardoso Jorge
Odonto , 2010,
Abstract: Introdu o: a periimplantite é uma doen a infecciosa semelhante à periodontite cr nica que afeta os tecidos periimplantares. Objetivo: realizar uma revis o de literatura sobre periimplantite, abordando os tipos, as causas, diagnóstico e tratamento. Conclus o: as doen as periimplantares s o possíveis complica es do tratamento com implantes. Vários protocolos de tratamento já foram sugeridos e estudados por diversos autores, porém, ainda se sabe muito pouco se essas terapias s o capazes de devolver a osseointegra o dos implantes. O tratamento das doen as periimplantares é ainda baseado em considera es empíricas, muitas vezes derivadas da pesquisa periodontal e de dados extrapolados de achados in vitro.
Estimating leaf appearance rate and phyllochron in safflower (Carthamus tinctorius L.)
Streck Nereu Augusto,Bellé Rogério Antonio,Rocha Edileusa Kersting da,Schuh Mariangela
Ciência Rural , 2005,
Abstract: Safflower may be an interesting option for the flower market, either as fresh or dried cut flower. Estimating the leaf appearance rate and the phyllochron (the time interval between the appearance of successive leaves) is important for calculating the number of emerged leaves (NL) on the plant, which is an excellent measure of plant development. The objective of this study was to estimate the leaf appearance rate and the phyllochron in safflower (Carthamus tinctorius L.). An experiment was conducted in Santa Maria, RS, Brazil, inside an 8 x 15m plastic greenhouse. Sowing was on 03 October 2003 and emergence was on 08 October 2003. The experimental design was a randomized complete block design with three replications. The main stem NL was measured twice a week from 24 October 2003 to 15 November 2003 in four plants per replication. Daily growing degree days above a base temperature (5degreesC) and accumulated thermal time (TT) were calculated. The NL was linearly regressed against TT. The angular coefficient of the linear regression is the LAR (leaves/ degreesC day) and the phyllochron (degreesC days/leaf) was estimated by the inverse of the angular coefficient of the linear regression. The LAR was 0.0467 ? 0.0203 leaves/ degreesC day and the phyllochron was 25.5 ? 14.6degreesC days/leaf.
Quantification of marginal leakage area of aesthetic restorations systems used in indirect inlays
Gleidson Rocha Arouca,Paulo Sérgio Souza da Silva,Antonio Fernando Monnerat,Rogério Luiz de Oliveira Mussel
RSBO , 2011,
Abstract: Introduction and objective: Marginal leakage of inlays restorations is a key issue for dentists, because of the damaging consequences that its intensity may cause to the tooth, periodontium, and longevity of restoration. The aim of this study was to assess the cervical marginal leakage of two composite systems and a pressed ceramic, through area calculation associated with the longest distance between the restoration and preparation cervical edges. Material and methods: Based on a metal pattern model with MOD inlay preparation, 15 type IV dental stone casts were obtained and randomly distributed into three groups (n = 5) as follows: Empress Group, Sinfony Group, Z350 Group. After restorations had been made, each one was positioned on the pattern model. Following, their middle and distal faces were photographed in order to analyze marginal cervical leakage through a computer software program. Results: Cervical marginal leakage area: there was statistically significant difference among the three groups (P < 0.05). Empress Group presented the highest values, followed by Sinfony and Z350 groups. Empress and Sinfony groups showed, respectively, a leakage area of 280% and 110% higher than Z350 group. Longest distance between restoration and preparation edges: Statistically significant differences were not observed between Empress and Sinfony groups; however, they showed statistically significant (P < 0.05) differences when compared to Z350 group (215% and 120% greater leakage than Z350 group, respectively). Conclusion: Considering the cervical marginal leakage area calculation and the longest distance between restoration and preparation edges, marginal leakage was smaller in Z350 group followed by Sinfony and Empress groups. In the analysis of cervical marginal leakage, all groups were clinically acceptable.
Microbiological quality of drinking rainwater in the inland region of Pajeú, Pernambuco, Northeast Brazil
Xavier, Rogério Pereira;Siqueira, Leonardo Pereira;Vital, Fernando Antonio Chaves;Rocha, Francisca Janaina Soares;Irm?o, Jo?o Inácio;Calazans, Glícia Maria Torres;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2011, DOI: 10.1590/S0036-46652011000300001
Abstract: despite all efforts to store and reduce its consumption, water is becoming less inexhaustible and its quality is falling faster. considering that water is essential to animal life, it is necessary to adopt measures to ensure its sanitary conditions in order to be fit for consumption. the aim of this study was to analyze the microbiological quality of drinking rainwater used by rural communities of tuparetama, a small town located in northeast brazil. the study covered seven rural communities, totaling 66 households. in each household two samples were collected, one from a tank and the other from a clay pot located inside the home, resulting in 132 samples (tank plus clay pot). approximately 90% of samples were below the standard recommended by the current legislation, being considered unfit for human consumption. part of this high microbiological contamination of drinking rainwater could be related to the lack of sanitary education and of an adequate sewerage sanitation system.
Variation of Morpho-Agronomic and Biomass Quality Traits in Elephant Grass for Energy Purposes According to Nitrogen Levels  [PDF]
érik da Silva Oliveira, Rogério Figueiredo Daher, Niraldo José Ponciano, Geraldo de Amaral Gravina, José Augusto de Almeida Sant’ana, Romildo Domingos Gottardo, Bruna Rafaela da Silva Menezes, Paulo Marcelo de Souza, Cláudio Luiz Melo de Souza, Ver?nica Brito da Silva, Avelino dos Santos Rocha, Antonio Alonso Cecon Novo
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.611168
Abstract: Elephant grass is a tropical forage plant widely spread in Brazil, used mainly in the livestock sector and in cattle feeding. Because of its high productivity and photosynthetic capacity, this culture has also been considered an alternative source of renewable energy. Six clones of elephant grass (Pennisetum purpureum Schum.) were evaluated under five levels of nitrogen fertilization (100, 200, 400, 800, and 1600 kg·N·ha-1), in a randomized-block design with a split-plot arrangement with three replicates, from April 2010 to December 2012, in the city of Campos dos Goytacazes— RJ, Brazil. The objective was to obtain estimates of variation in morpho-agronomic traits and biomass quality. We observed that genotypes Cameroon-Piracicaba and Gua?u I/Z2 have great potential to be used, with maximum dry matter yields of 60.97 and 44.10 t·ha-1 per cut for energy purposes among the studied genotypes.
Análise comparativa entre duas bacias hidrográficas utilizando um protocolo de avalia o rápida da diversidade de habitats / Comparative analysis between two hydrographic basin using a rapid habitats diversity evaluation protocol
Rogério Antonio Krupek
Ambiência , 2010,
Abstract: Este trabalho teve por objetivo utilizar um protocolo de avalia o rápida da diversidade de habitats como ferramenta para comparar duas bacias de drenagem localizadas no município de Guarapuava, estado do Paraná: a bacia hidrográfica do rio Cascavel (25o23’03”S-51o28’12”W) e a bacia hidrográfica do rio das Pedras (25o13’10”S-51o28’40”W), que se encontram relativamente próximas e est o sob diferentes intensidades de influências antrópicas. Este protocolo tem como finalidade avaliar características da água e do entorno de ecossistemas aquáticos a partir da atribui o de pontua o a cada um dos parametros com base na observa o das condi es do habitat. As coletas de dados foram realizadas no período de 10 de junho a 30 de julho de 2007 em vinte pontos de amostragem estabelecidos em cada uma das bacias de drenagem estudadas. Comparativamente, a grande maioria dos parametros apresentou diferen as significativas entre os dois sistemas, sendo que os rios e riachos da bacia do rio das Pedras encontram-se nitidamente em melhores condi es que a bacia do rio Cascavel, onde seus ecossistemas aquáticos apresentam visíveis sinais de degrada o. O uso de avalia es rápidas como este protocolo é uma importante ferramenta no desenvolvimento de programas de monitoramento ecológico e na restaura o de ambientes lóticos. AbstractThe main object of the present work was to use a protocol of rapid habitat diversity evaluation as tool to compare two drainage basin located in the municipality of Guarapuava, mid-southern region of Paraná state: Cascavel river basin (25o23’03”S-51o28’12”W) and Pedras river basin (25o13’10”S-51o28’40”W), which meets relatively near and under different intensities of entropic influences. This protocol has the purpose of evaluating water and riparian characteristics of the aquatic ecosystems from the attribution of values to each parameter through observation of the habitat conditions. The samplings were carried out from 10 June to 30 July of 2007 in 20 established points of sampling in each drainage basin studied. Comparatively, the great majority of the parameters presented significant differences among two systems, considering that rivers and streams of Pedras river basin are, for sure, in better conditions that Cascavel river basin, where the aquatic ecosystems presented visible signals of degradation. The use of rapid evaluation, like this protocol, is an important tool in developing programs of ecological monitoring and lotics environments restoration.
Paniculite mesentérica (PM) e fibromatose mesentérica (FM): relato de casos
Balestrim Filho, Ant?nio;Mercês, Roberta Lages das;Pisi, Paulo Henrique;Braga, Thiago Antonio;Almeida, Ana Luiza Normanha R.;Parra, Rogério Serafim;Feres, Omar;Rocha, José Joaquim Ribeiro da;
Revista Brasileira de Coloproctologia , 2009, DOI: 10.1590/S0101-98802009000300016
Abstract: mesenteric panniculitis (mp) and mesenteric fibromatosis (mf) are fibrotic diseases of uncertain aetiology. both occur most frequently in the mesentery of the small intestine, the greater omentum and the mesocolons. in its acute form, the first clinical symptoms of mf are complications of the disease. chronic mf is characterized by vague abdominal symptoms and/or a palpable abdominal mass. like mesenteric panniculitis, mesenteric fibromatosis can be diagnostically verified by exploratory laparotomy, or diagnostic video-laparoscopy and biopsy. here, we present two cases, one of mp and the other of mf, with resembling clinical and tomographic aspects, as well as similarities in diagnosis, histopathology and therapy. with our case report, we want to emphasise both similarities and differences between these two pathologies.
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