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Search Results: 1 - 10 of 660249 matches for " Carina S.M.;Silva "
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Produ??o de feij?o-fava em fun??o do uso de doses de fósforo
Oliveira, Ademar P. de;Alves, Edna U.;Alves, Adriana U.;Dornelas, Carina S.M.;Silva, Jandiê A. da;P?rto, M?nica L.;ALves, Amarlete V.;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000300008
Abstract: phosphorus is an important mineral nutrient for vegetables. this work was conducted at universidade federal da paraíba, in areia, brazil, from december/2001 to july/2002, aiming to evaluate the effect of levels of p2o5 on the yield of lima bean, cv. "orelha de vó". the experimental design was a randomized block with five treatments (0; 100; 200; 300; 400 and 500 kg ha-1 of p2 o5), and four replications. each plot consisted of 40 plants spaced 1.0 m between rows and 0.50 m between plants in each row. the estimated maximum yield of green and dry beans (5.2 and 2.7 t ha-1, respectively) corresponded, to the dosages of 309 and 302 kg ha-1 of p2o5. the levels 291 kg ha-1 and 281 kg ha-1 of p2o5 provided, respectively, the greater economic return for the yield of green (4.1 t ha-1) and dry (1.8 t ha-1) beans. the most economic levels included more than 80% of those dosages responsible for the maximum yields and indicated the economic viability of phosphorus utilization on lima bean crop. the p2o5 levels which promoted the maximum yield and the maximum economic return for green and dry beans yield were respectively, with 57.1; 56.3; 55.0 and 53.8 mg dm-3 of available p for the extractor of melich 1. the lima bean response to the phosphorus fertilization in soils with similar fertility used in the present study, for green and dry beans yield, will be reduced at levels of available p superior to 55.0 and 53.8 mg dm-3. the average concentration of p in the leaves of lima bean, 120 days after sowing, in function of levels of p2o5 was of 3.4 g kg-1. for the soil of this study the application of 291 and 281 kg ha-1 of p2o5 is more recommended to establish the lima bean respectively, for green and dry beans yield.
Higiene de manos como estrategia fundamental en el control de infección hospitalaria: un estudio cuantitativo
Coelho,M.S.; Silva Arruda,C.; Faria Sim?es,S.M.;
Enfermería Global , 2011, DOI: 10.4321/S1695-61412011000100003
Abstract: hospital-acquired infections (hi) continue to constitute a serious public health issue worldwide. among the main measures of prevention and control is hand hygiene, which, according to semmelweis and florence nightingale, is an important tool to reduce hi rates. this research adopts a descriptive and quantitative approach to analyze the frequency of hand washing by healthcare staff of a university hospital located in niterói, state of rio de janeiro, brazil. after being approved by the ethics committee, the study began by collecting data through a questionnaire comprising open and closed questions about the practice of hand washing as an instrument of data collection. after analyzing the data collected, 78% of professionals have been identified as women. with regard to age, the highest frequency occurred in the group of individuals between 26 and 45 years at 60%. among the professional categories, 36% are nurses, 58% are practical nurses and 6%, nursing assistants. regarding training or upgrading in the area of hi, we have observed that 48% of professionals have not acquired this. in relation to hand hygiene, 98% said they always wash them throughout the day, 96% said they do so in between procedures, 86%, after removal of gloves. among the products used for hand washing, we observed massive use of soap and water, a practice cited by 92% of the respondents, followed by alcohol gel at 44%. but when asked about how they carried it out, only 26% of the professionals could describe it in detail. after this study, we conclude that, although health professionals know the importance of hand washing and argue that they frequently do it during care, just very few of them effectively perform the technique in a satisfactory way, which shows the need for greater professional involvement and constant update on the subject.
Preliminary risk analysis applied to the handling of health-care waste
Carvalho, S.M.L.;Silva, M.G.C.;
Brazilian Journal of Chemical Engineering , 2002, DOI: 10.1590/S0104-66322002000400004
Abstract: between 75% and 90% of the waste produced by health-care providers no risk or is "general" health-care waste, comparable to domestic waste. the remaining 10-25% of health-care waste is regarded as hazardous due to one or more of the following characteristics: it may contain infectious agents, sharps, toxic or hazardous chemicals or it may be radioactive. infectious health-care waste, particularly sharps, has been responsible for most of the accidents reported in the literature. in this work the preliminary risks analysis (pra) technique was used to evaluate practices in the handling of infectious health-care waste. currently the pra technique is being used to identify and to evaluate the potential for hazard of the activities, products, and services from facilities and industries. the system studied was a health-care establishment which has handling practices for infectious waste. thirty-six procedures related to segregation, containment, internal collection, and storage operation were analyzed. the severity of the consequences of the failure (risk) that can occur from careless management of infectious health-care waste was classified into four categories: negligible, marginal, critical, and catastrophic. the results obtained in this study showed that events with critics consequences, about 80%, may occur during the implementation of the containment operation, suggesting the need to prioritize this operation. as a result of the methodology applied in this work, a flowchart the risk series was also obtained. in the flowchart the events that can occur as a consequence of a improper handling of infectious health-care waste, which can cause critical risks such as injuries from sharps and contamination (infection) from pathogenic microorganisms, are shown.
Preliminary risk analysis applied to the handling of health-care waste
Carvalho S.M.L.,Silva M.G.C.
Brazilian Journal of Chemical Engineering , 2002,
Abstract: Between 75% and 90% of the waste produced by health-care providers no risk or is "general" health-care waste, comparable to domestic waste. The remaining 10-25% of health-care waste is regarded as hazardous due to one or more of the following characteristics: it may contain infectious agents, sharps, toxic or hazardous chemicals or it may be radioactive. Infectious health-care waste, particularly sharps, has been responsible for most of the accidents reported in the literature. In this work the preliminary risks analysis (PRA) technique was used to evaluate practices in the handling of infectious health-care waste. Currently the PRA technique is being used to identify and to evaluate the potential for hazard of the activities, products, and services from facilities and industries. The system studied was a health-care establishment which has handling practices for infectious waste. Thirty-six procedures related to segregation, containment, internal collection, and storage operation were analyzed. The severity of the consequences of the failure (risk) that can occur from careless management of infectious health-care waste was classified into four categories: negligible, marginal, critical, and catastrophic. The results obtained in this study showed that events with critics consequences, about 80%, may occur during the implementation of the containment operation, suggesting the need to prioritize this operation. As a result of the methodology applied in this work, a flowchart the risk series was also obtained. In the flowchart the events that can occur as a consequence of a improper handling of infectious health-care waste, which can cause critical risks such as injuries from sharps and contamination (infection) from pathogenic microorganisms, are shown.
ACúMULO DE CáDMIO POR Saccharomyces cerevisiae FERMENTANDO MOSTO DE CALDO DE CANA
SILVA, S.M.G. da;PRADO-FILHO, L.G. do;
Ciência e Tecnologia de Alimentos , 1998, DOI: 10.1590/S0101-20611998000400010
Abstract: the aim of this paper is to study the absorption and cadmium (cd) concentration by saccharomyces cerevisiae, fermenting must of sugar-cane, with control contamination, under toxic levels of cadmium (mg cd kg-1 must). the fermentation was performed in 500 ml erlemmayers. non-sterilized must showed 12% of total reducing sugar (w/w) e ph 4,5. for the control contamination, was applied cadmium chloride, with four levels of contamination: 0,5; 1,0; 2,0 and 5,0 mg cd kg-1 must. the inoculation of must was carried out with bread yeast (10% w/w). after fermentation (4 hours), samples were colected to evaluate cellular viability and yeast percentage. fermenting mid was centrifuged and analysis of mid without yeast and raw yeast were performed. the alcohol content was measured , as well as the total humid weight for the yeast material, raw protein and heavy metal by atomic absorption spectroscopy. watch all level studied have accumulation of cadmium at yeast.
Enjoo de movimento: etiologia, factores predisponentes e adapta??o
Coelho,Carlos S.M.; Santos,Jorge A.; Silva,Carlos Fernandes da;
Psicologia, Saúde & Doen?as , 2007,
Abstract: this article is about motion sickness. after a brief description of the anatomy of the vestibular apparatus we review the theories about the genesis of motion sickness. we will centre our attention on the cue conflict theory (reason & brand, 1975), on the postural instability approach (stoffregen & riccio, 1991), and on the poison theory (treisman, 1977). at last we will discuss the symptoms prevision and its treatment.
ACúMULO DE CáDMIO POR Saccharomyces cerevisiae FERMENTANDO MOSTO DE CALDO DE CANA
SILVA S.M.G. da,PRADO-FILHO L.G. do
Ciência e Tecnologia de Alimentos , 1998,
Abstract: O presente trabalho estudou o acúmulo de cádmio (Cd) por Saccharomyces cerevisiae, fermentando mosto de caldo de cana com contamina es controladas, em níveis sub-tóxicos, do citado metal. O ensaio de fermenta o foi conduzido em erlenmayers de 500 mL, acondicionados em estufa B.O.D. O mosto, n o esterilizado, continha 12% de a úcares redutores totais (ART) e pH 4,5. Para a contamina o controlada empregou-se cloreto de cádmio em quatro níveis de contamina es: 0,5; 1,0; 2,0 e 5,0 mg Cd kg-1 mosto. A inocula o do mosto foi executada com fermento de panifica o (10% p/p). Após a fermenta o (4 horas) foram determinados, porcentagem de fermento no vinho centrifugado e teor alcoólico do mesmo. Na levedura separada por centrifuga o, foram determinados peso úmido, matéria seca, proteína bruta e teores de cádmio por espectrofotometria de absor o at mica. Em todos os níveis de contamina o estudados houve acúmulo de Cd pela levedura.
Bioactivity of Tepa (Laureliopsis philippiana (Looser) Shodde) Powder to Sitophilus zeamais Motschulsky Control in Laboratory Bioactividad del Polvo de Tepa (Laureliopsis philippiana (Looser) Shodde) para el Control de Sitophilus zeamais Motschulsky en Laboratorio
Ana Ortiz U,Gonzalo Silva A,Angélica Urbina P,Nelson Zapata S.M
Chilean Journal of Agricultural Research , 2012,
Abstract: The maize weevil (Sitophilus zeamais Motschulsky) is one of the most widespread pests and causes heavy losses of stored grain throughout the world. Control of this insect is primarily dependent upon continued applications of organophosphorus and pyrethroid insecticides and fumigants as phosphine but the increasing problems with current insecticides drive the need for research and to develop new control methods. The insecticidal effect of leaf powder of tepa, Laureliopsis philippiana (Looser) Shodde, was evaluated against maize weevil under laboratory conditions. The parameters evaluated were adult mortality and emergence, grain weight loss and germination, and residual, repellent and fumigant effect. The highest levels of insect mortality were registered with treatments at 1, 2, and 4%, with values from 94.7 to 100%. Also, it was obtained 0% of adult insect emergence with these concentrations. In all treatments grain weight was less than 5.8 g. Seed germination was not affected. The powder of L. philippiana exhibited repellent effect in all concentrations and did not show fumigant effect. Insecticidal effect of powder remained for 14 d. Finally, we concluded that powder of L. philippiana has great potential for controlling S. zeamais. El gorgojo del maíz (Sitophilus zeamais Motschulsky) es una de las plagas que provoca pérdidas a los granos almacenados más importantes a nivel mundial. El control de esta especie se realiza fundamentalmente con aplicaciones continuas de insecticidas organofosforados y piretroides y fumigantes como fosfuro de aluminio, pero problemas con éstos han hecho necesaria la busqueda y desarrollo de nuevos métodos de control. Se evaluó el efecto insecticida del polvo de hojas de tepa, Laureliopsis philippiana (Looser) Shodde, sobre el gorgojo del maíz en condiciones de laboratorio. Los parámetros evaluados fueron mortalidad y emergencia de insectos adultos, pérdida de peso y germinación de los granos, además de residualidad, repelencia y efecto fumigante. La mayor mortalidad de insectos se registró con los tratamientos 1, 2 y 4%, con valores entre 94,7 y 100%. Con estas mismas concentraciones se obtuvo una emergencia de insectos adultos de 0%. La pérdida de peso de los granos no superó los 5,7 g en todos los tratamientos y la germinación de semillas no fue afectada. El polvo de L.philippiana mostró efecto repelente en todas las concentraciones y ninguna de ellas presentó acción fumigante. El efecto insecticida del polvo se mantuvo durante 14 d. Finalmente, se concluye que el polvo de L. philippiana tiene gran potencial para el cont
Composi??o florística de plantas daninhas em um lago do Rio Solim?es, Amazonas
Albertino, S.M.F.;Miléo, L.J.;Silva, J.F.;Silva, C.A.;
Planta Daninha , 2009, DOI: 10.1590/S0100-83582009000100001
Abstract: the swamps located at the basins of the amazonas and solim?es rivers are denominated "várzeas". in these areas, flooding is a natural event that changes the structure and composition of the local plants. thus, knowing the species diversity in these amazon region areas is extremely important to understand the dynamics of the natural regeneration of the amazon ecosystem species. accordingly, the goal of this study was to survey the soil floristic composition at the bottom of the manaquiri lake, amazon, during an exceptional dry period in 2005. plants were collected in two areas of the lake in november 2005. flora sampling was carried out using a 0.36 m2 wood frame, randomly cast 20 times at each site studied. the emergent vegetation at both collection sites was of 5,958 individuals distributed in seven families and nine species. the most representative families in number of species were poaceae and cyperaceae. cyperus esculentus and luziola spruceana were the most frequent, while mimosa pudica and alternanthera sessilis presented the highest abundance. c. esculentus and m. pudica had higher number of individuals, density and value of importance. the plant species found in this study maintained their growing and developing capacity even after being submerged for a long period.
Pathologic evaluation of testis and epididymis of hairy rams in the semi-arid region of Piaui State
Costa, F.L.A.;Silva, S.M.M.S.;Nascimento, E.F.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2007, DOI: 10.1590/S0102-09352007000500004
Abstract: the gross and histological examinations of testis and epididymis of 53 crossbred hairy rams in the semi-arid region of piaui state showed 34 (64.1%) animals with pathologic changes: one animal presented (1.9%) testicle hipoplasia; 35 (66%) degenerative changes, being 13 (24.5%) related to testicular degeneration, three (5.7%) to intraepithelial cysts in the epididymal epithelia and 19 (35.8%) to retention cysts in the epididymis; 11 (20.7%) inflammatory alterations, being five (9.4%) related to epididymitis, four (7.5%) to orchitis and two (3.8%) to spermatic granulomas. the animals with hypoplasic testicle, testicular degeneration and inflammatory alterations were classified as sub-fertile.
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