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Search Results: 1 - 10 of 444041 matches for " Sérgio Félix;Ferreira "
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Precipitation Extremes Analysis over the Brazilian Northeast via Logistic Regression  [PDF]
Washington Luiz Félix Correia Filho, Paulo Sérgio Lucio, Maria Helena Constantino Spyrides
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.41007
Abstract:

This work diagnosed the precipitation extremes over the Brazilian Northeast (NEB) based on logistic regression for obtaining associations between precipitation extremes and the meteorological variables by Odd Ratio (OR). Data of ten meteorological variables to the NEB (North (NNEB), East (ENEB), South (SNEB) and Semiarid (SANEB)) were used daily. The OR results evidenced that the outgoing longwave radiation was the key variable on the precipitation extremes detection in three sub-regions: ENEB with 2.91 times (95% confidence interval (CI): 2.11, 4.02), NNEB with 3.63 times (95% CI: 1.93, 6.83), and SANEB with 5.40 times (95% CI: 3.04, 9.61); while on SNEB, it was relative humidity with 3.88 times (95% CI: 2.89, 5.20) more chance to favor the precipitation extremes. The maximum temperature, zonal wind component, evaporation, specific humidity and RH also had influence on these extremes. Goodness-of-fit and ROC analysis demonstrated that all models had a good fit and good predictive capability.

Consenso brasileiro de monitoriza??o e suporte hemodinamico - parte III: métodos alternativos de monitoriza??o do débito cardíaco e da volemia
Schettino, Guilherme;Ederlon, Rezende;Mendes, Ciro Leite;Réa-Neto, álvaro;David, Cid Marcos;Lobo, Suzana Margareth Ajeje;Barros, Alberto;Silva, Eliézer;Friedman, Gilberto;Amaral, José Luiz Gomes do;Park, Marcelo;Monachini, Maristela;Oliveira, Mirella Cristine de;Assun??o, Murillo Santucci César;Akamine, Nelson;Mello, Patrícia Veiga C;Pereira, Renata Andréa Pietro;Costa Filho, Rubens;Araújo, Sebasti?o;Pinto, Sérgio Félix;Ferreira, Sérgio;Mitushima, Simone Mattoso;Agareno, Sydney;Brilhante, Yuzeth Nóbrega de Assis;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000100013
Abstract: background and objectives: cardiac output and preload as absolute data do not offer helpful information about the hemodynamic of critically ill patients. however, monitoring the response of these variables to volume challenge or inotropic drugs is a very useful tool in the critical care setting, particularly for patients with signs of tissue hypoperfusion. although pac remains the " gold standard" to measure cardiac output and preload, new and alternative technologies were developed to evaluate these hemodynamic variables. methods: modified delphi methodology was used to create and quantify the consensus between the participants. amib indicated a coordinator who invited more six experts in the area of monitoring and hemodynamic support to constitute the consensus advisory board. twenty three physician and two nurses selected from different regions of the country completed the expert panel, which reviewed the pertinent bibliography listed at the medline in the period from 1996 to 2004. results: recommendations regarding the use of arterial pulse pressure variation during mechanical ventilation, continuous arterial pulse contour and lithium dilution cardiac output measurements, esophageal doppler waveform, thoracic electrical bioimpedance, echocardiography and partial co2 rebreathing for monitoring cardiac output and preload were created. conclusions: the new and less invasive techniques for the measurement of cardiac output, preload or fluid responsiveness are accurate and may be an alternative to pac in critically ill patients.
Parte II: monitoriza??o hemodinamica básica e cateter de artéria pulmonar
Dias, Fernando Suparregui;Rezende, Ederlon;Mendes, Ciro Leite;Réa-Neto, álvaro;David, Cid Marcos;Schettino, Guilherme;Lobo, Suzana Margareth Ajeje;Barros, Alberto;Silva, Eliézer;Friedman, Gilberto;Amaral, José Luiz Gomes do;Park, Marcelo;Monachini, Maristela;Oliveira, Mirella Cristine de;Assun??o, Murillo Santucci César;Akamine, Nelson;Mello, Patrícia Veiga C;Pereira, Renata Andréa Pietro;Costa Filho, Rubens;Araújo, Sebasti?o;Félix Pinto, Sérgio;Ferreira, Sérgio;Mitushima, Simone Mattoso;Agareno, Sydney;Brilhante, Yuzeth Nóbrega de Assis;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000100012
Abstract: background and objectives: monitoring of vital functions is one of the most important tools in the management of critically ill patients. nowadays is possible to detect and analyze a great deal of physiologic data using a lot of invasive and non-invasive methods. the intensivist must be able to select and carry out the most appropriate monitoring technique according to the patient requirements and taking into account the benefit/risk ratio. despite the fast development of non invasive monitoring techniques, invasive hemodynamic monitoring using pulmonary artery catheter still is one of the basic procedures in critical care. the aim was to define recommendations about clinical utility of basic hemodynamic monitoring methods and the use of pulmonary artery catheter. methods: modified delphi methodology was used to create and quantify the consensus between the participants. amib indicated a coordinator who invited more six experts in the area of monitoring and hemodynamic support to constitute the consensus advisory board. twenty-five physicians and nurses selected from different regions of the country completed the expert panel, which reviewed the pertinent bibliography listed at the medline in the period from 1996 to 2004. results: recommendations were made based on 55 questions about the use of central venous pressure, invasive arterial pressure, pulmonary artery catheter and its indications in different settings. conclusions: evaluation of central venous pressure and invasive arterial pressure, besides variables obtained by the pac allow the understanding of cardiovascular physiology that is of great value to the care of critically ill patients. however, the correct use of these tools is fundamental to achieve the benefits due to its use.
Crescimento e nutri??o de eucalipto em resposta à compacta??o de latossolos com diferentes umidades
Silva, Sérgio Ricardo;Barros, Nairam Félix de;Boas, José Eliel Braga Vilas;
Revista Brasileira de Ciência do Solo , 2006, DOI: 10.1590/S0100-06832006000500001
Abstract: eucalypt root growth and yield are affected directly by soil compaction during forestry operations, particularly harvesting. these effects are intensified under high soil moisture conditions. an experiment was carried out under controlled conditions in order to evaluate the effects of compaction under increased soil moisture levels, on seedling growth and nutrition. an oxidic-gibbsitic red yellow latosol (lva) and a kaolinitic yellow latosol (la) were used. the treatments consisted of five compaction pressure levels (0, 60, 120, 180, and 240 kpa) and three soil volumetric water content (0.05, 0.10 and 0.20 kg kg-1, the last one corresponding to field capacity), arranged in four randomized blocks. a quantity of soil was calculated to occupy 1.66 dm3 in a pvc pipe section at a bulk density of 1.05 and 1.10 kg dm-3, respectively, for the lva and la. subsequently, the soil samples were fertilized, moistened, placed in pvc ring pots and compacted with a cbr press. after soil compaction, the resulting bulk density was calculated, according to the new volume occupied by the soil. sixty days after eucalypt seedling emergence, the plants were harvested for root and shoot dry weight determination, root density estimation, and plant nutrient analyses. the increase of bulk density by soil compaction was intensified by soil moisture. increasing soil compaction reduced root and shoot growth, root density and plant nutrient content at the highest volumetric water content (0.20 kg kg-1) in oxidic-gibbsitic soil (lva), but did not affect eucalypt dry matter yield at the lower volumetric water levels. the most affected nutrients under the compacted condition were: fe > zn > cu > p = mg in the oxidic-gibbsitic soil, and k in the kaolinitic soil. this soil was more sensitive to compaction than oxidic-gibbsitic soil, causing stronger restrictions on the root dry matter yield and fe, cu, n, s, and zn uptake. this study results support soil moisture at pressure application as the main fac
Perception of the Hospital Nutrition Service by Internal Clients: Example of the Results Obtained in the Area of Production of Pediatric Formulas and Enteral Diets  [PDF]
Nancy Yukie Yamamoto Tanaka, Edgard Monforte Merlo, Carolina Ferreira Nicoletti, Carla Barbosa Nonino, Wilson Moraes Góes, Roberta Novaes, Fernando Fávero, Júlio Sérgio Marchini
Food and Nutrition Sciences (FNS) , 2016, DOI: 10.4236/fns.2016.72008
Abstract: Aim: Client perception was important to indicate points requiring interventions or adjustments and to permit refinement of the services offered. This study aimed to determine the perception of internal clients regarding the quality of the service after integrating these items into the system of electronic prescription. Methods: We applied a questionnaire elaborated based on the SERVQUAL about the five dimensions of service quality (tangibility, reliability, responsiveness, safety, and empathy) with adaptation of the four-point Likert scale, ranging from “I fully disagree” to “I fully agree”. Results: The instrument was applied to 138 professionals, with a 56% return. Analysis revealed that the strong points were related to tangibility, safety and empathy, while the aspects related to reliability showed a lower score regarding time of delivery, occurrences and waste, and those related to responsiveness showed a lower score regarding service to be provided in a timely manner. The Cronbach Alpha Coefficient indicated that the investigation had a high degree of consistency and that the results could be considered reliable. Conclusion: Application of the adapted SERVQUAL questionnaire revealed that the perception of internal clients about the five quality dimensions after the changes made and provided valuable information for the scoring of aspects that still needed adjustment to improve interventions.
Effect of compaction on microbial activity and carbon and nitrogen transformations in two oxisols with different mineralogy
Silva, Sérgio Ricardo;Silva, Ivo Ribeiro da;Barros, Nairam Félix de;Sá Mendon?a, Eduardo de;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000400007
Abstract: the use of machinery in agricultural and forest management activities frequently increases soil compaction, resulting in greater soil density and microporosity, which in turn reduces hydraulic conductivity and o2 and co2 diffusion rates, among other negative effects. thus, soil compaction has the potential to affect soil microbial activity and the processes involved in organic matter decomposition and nutrient cycling. this study was carried out under controlled conditions to evaluate the effect of soil compaction on microbial activity and carbon (c) and nitrogen (n) mineralization. two oxisols with different mineralogy were utilized: a clayey oxidic-gibbsitic typic acrustox and a clayey kaolinitic xantic haplustox (latossolo vermelho-amarelo ácrico - lva, and latossolo amarelo distrófico - la, respectively, in the brazil soil classification system). eight treatments (compaction levels) were assessed for each soil type in a complete block design, with six repetitions. the experimental unit consisted of pvc rings (height 6 cm, internal diameter 4.55 cm, volume 97.6 cm3). the pvc rings were filled with enough soil mass to reach a final density of 1.05 and 1.10 kg dm-3, respectively, in the lva and la. then the soil samples were wetted (0.20 kg kg-1 = 80 % of field capacity) and compacted by a hydraulic press at pressures of 0, 60, 120, 240, 360, 540, 720 and 900 kpa. after soil compression the new bulk density was calculated according to the new volume occupied by the soil. subsequently each pvc ring was placed within a 1 l plastic pot which was then tightly closed. the soils were incubated under aerobic conditions for 35 days and the basal respiration rate (co2-c production) was estimated in the last two weeks. after the incubation period, the following soil chemical and microbiological properties were detremined: soil microbial biomass c (cmic), total soil organic c (toc), total n, and mineral n (nh4+-n and no3--n). after that, mineral n, organic n and the rate of n
A CONTRIBUI??O DO GENE HALOTANO SOBRE AS CARACTERíSTICAS DE QUALIDADE DA CARNE SUíNA
Culau, Paulete de Oliveira Vargas;López, Jorge;Rubensam, Jane Maria;Lopes, Rui Fernando Félix;Nicolaiewsky, Sérgio;
Ciência Rural , 2002, DOI: 10.1590/S0103-84782002000100020
Abstract: the aim of this research work was to evaluate the effect of the halothane gene on the quality characteristics of pork. commercial hybrid pig carcasses (151) were used for the trial, 93 with normal halothane genotype (halnn), 51 heterozygous genotype (halnn) and 7 homozigous recessive genotype (halnn). the measured attributes were backfat and muscle depth, meat percentage, carcass weight and ph at 45 minutes and 24 hours after the slaughter, on the longissimus dorsi muscle, color, drip loss, and identification of the halothane genotype was determined in fat samples through pcr-rflp technique. the halnn pigs presented greater muscle depth and meat percentage than halnn ones. significant differences were observed between halnn and halnn pigs in relation to the inicial ph and meat color. the halothane genotype did not affect the backfat thickness, final ph and water holding capacity. differences between carcass quality from the halnn and the nn pigs in relation to the backfat thickness, muscle depth and the meat percentage were not observed. differences between quantity and quality of pork seems to be associated to the presence of the halothane gene.
Soil compaction and eucalyptus growth in response to forwarder traffic intensity and load
Silva, Sérgio Ricardo da;Barros, Nairam Félix de;Costa, Liovando Marciano da;Leite, Fernando Palha;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000300002
Abstract: during timber exploitation in forest stands harvesting machines pass repeatedly along the same track and can cause soil compaction, which leads to soil erosion and restricted tree root growth. the level of soil compaction depends on the number of passes and weight of the wood load. this paper aimed to evaluate soil compaction and eucalyptus growth as affected by the number of passes and wood load of a forwarder. the study was carried out in santa maria de itabira county, minas gerais state - brazil, on a seven-year-old eucalyptus stand planted on an oxisol. the trees were felled by chainsaw and manually removed. plots of 144 m2 (four rows 12 m long in a 3 x 2 m spacing) were then marked off for the conduction of two trials. the first tested the traffic intensity of a forwarder which weighed 11,900 kg and carried 12 m3 wood (density of 480 kg m-3) and passed 2, 4, and 8 times along the same track. in the second trial, the forwarder carried loads of 4, 8, and 12 m3 of wood, and the machine was driven four times along the same track. in each plot, the passes affected four rows. eucalyptus was planted in 30 x 30 x 30 cm holes on the compacted tracks. the soil in the area is clayey (470 clay and 440 g kg-1 sand content) and at depths of 0-5 cm and 5-10 cm, respectively, soil organic carbon was 406 and 272 g kg-1 and the moisture content during the trial 248 and 249 g kg-1. these layers were assessed for soil bulk density and water-stable aggregates. the infiltration rate was measured by a cylinder infiltrometer. after 441 days the measurements were repeated, with additional analyses of: soil organic carbon, total nitrogen, n-nh4+, n-no3-, porosity, and penetration resistance. tree height, stem diameter, and stem dry matter were measured. forwarder traffic increased soil compaction, resistance to penetration and microporosity while it reduced the geometric mean diameter, total porosity, macroporosity and infiltration rate. stem dry matter yield and tree height were not af
Influência do gene halotano sobre a qualidade da carne suína
Culau, Paulete de Oliveira Vargas;López, Jorge;Rubensam, Jane Maria;Lopes, Rui Fernando Félix;Nicolaiewsky, Sérgio;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000400019
Abstract: the aim of this research work was to evaluate the effect of the halothane gene on the quality characteristics of pork. commercial hybrid pork carcasses (151) were used for the trial, 93 with normal halothane genotype (halnn), 51 heterozygous genotype (halnn) and 7 homozigous recessive genotype (halnn). the measured attributes were carcass weight, muscle temperature at 45 minutes and ph at 45 minutes and 24 hours after the slaughter at the longissimus dorsi muscle and color. identification of the halothane genotype was determined in fat samples through the pcr-rlpc technique. significant differences were observed between halnn and halnn and between halnn and halnn pigs in relation to the inicial ph and color of the meat. the pse carcasses frequency was greater in the halnn and in the halnn pigs than in the halnn (85.71, 58.82, and 36,56%, based on the initial ph; 71.43, 47.06, and 17.20%, based on color, respectively). the halothane genotype did not affect muscle temperature and final ph. related to ph and color, the quality of pork was inferior in the halnn and the halnn pigs than in the halnn.
Regenera o in vitro de anteras de arroz irrigado (Oryza sativa L.) e mapeamento de QTL associado
Lannes Sérgio Dias,Zimmer Paulo Dejalma,Oliveira Antonio Costa de,Carvalho Fernando Irajá Félix de
Ciência Rural , 2004,
Abstract: A baixa taxa de regenera o in vitro de alguns cultivares de arroz da subespécie indica limita a utiliza o de técnicas de cultura de anteras como ferramenta para o desenvolvimento de novos cultivares. A identifica o de regi es gen micas associadas à forma o de calos e regenera o de plantas, a partir do cultivo de anteras, poderá permitir a transferência do caráter por sele o assistida. Duas popula es de retrocruzamento foram utilizadas para o mapeamento genético e estudo destes caracteres, sendo Taipei 309// BRS 7 "Taim"/Taipei 309 (53 genótipos) e BRS 7 "Taim"// BRS 7 "Taim"/Taipei 309 (74 genótipos). Duzentas anteras imaturas de cada genótipo utilizado no estudo foram inoculadas em meio NL líquido e, após 40 dias, os calos formados foram transferidos para o meio MS sólido para regenera o de plantas. Todas as plantas doadoras de anteras foram usadas na extra o de DNA gen mico e sete primers RAPD foram utilizados na gera o de marcadores para a constru o dos mapas de liga o dos retrocruzamentos estudados. A taxa de forma o de calos variou de 2,27 a 3,36% e a taxa de regenera o de plantas 1,38 a 1,82%, n o se diferenciando significativamente. Seis grupos de liga o foram obtidos, três em cada popula o. Um QTL com LOD 3,10 foi detectado para o caráter forma o de calos na popula o Taipei 309 // BRS 7 "Taim" / Taipei 309. Nenhum QTL foi detectado para a característica regenera o de plantas.
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