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Search Results: 1 - 10 of 225646 matches for " Marisa R.; "
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Ocorrência de Trichopria sp. (Hymenoptera: Diapriidae) atacando pupas de Chrysomya putoria (Wiedemann) Diptera: Calliphoridae) na granja
Monteiro, Marisa R.;Prado, Angelo P. do;
Anais da Sociedade Entomológica do Brasil , 2000, DOI: 10.1590/S0301-80592000000100020
Abstract: this work was carried out in a poultry house (granja capuavinha), monte mor, state of s?o paulo, from february 1991 to april 1992 with the purpose of studying the synanthropic flies and their parasitoids. the pupae were extrated from manure using a water-flotation method. berlese-tullgren's funnel was used to extract parasitoids and fly larvae. each pupa was kept in a small transparent glass vial for 35 days until the emergence of the fly or parasitoid. after this period, the pupae that did not yield adult flies or parasitoids were dissected. the following species of fly were collected: chrysomya putoria (wiedeman), muscina stabulans (fallén), musca domestica l., fannia pusio (stein). in addition several species of sepsidae were also collected. the following species of parasitoids that emerged from fly pupae were collected: spalangia gemina (boucek), s. cameroni (perkins), muscidifurax raptoroides kogan & legner, pachycrepoideus vindemiae (rondani), nasonia vitripennis (walker) and trichopria sp. (diapriidae). tachinaephagus zealandicus (ashmead) (encyrtidae) a larval pupal parasitoid also ocurred. this is the first report of trichopria sp., a gregarious parasitoid, attacking pupae of c. putoria. about 13% of parasitoids did not eclode successfuly from the parasitoid pupae which may indicate a recent association between trichopria sp. and c. putoria in brazil.
Aplicación de un modelo de calidad del aire de segunda generación a la zona metropolitana de Guadalajara, México
MENDOZA, Alberto;GARCíA, Marisa R.;
Revista internacional de contaminación ambiental , 2009,
Abstract: the guadalajara metropolitan area (gma) continuously registers periods of unhealthy levels of air quality. one of the most powerful tools available to describe the dynamics of air pollutants in urban areas are three-dimensional mathematical models that describe the transportation and chemical transformation of these. in this work, we present a first application of one of such models, the california/carneige institute of echnology (cit), to the gma. the modeling period selected goes from the 16th to the 18th of may, 2001; the modeling domain covers an area of 25,600 km2 and is centered in the gma. the statistical model performance evaluation indicates that the cit behaved better during the last two days of the simulation. in this period, regarding o3, the normalized bias was less than 23.5 %, the normalized error less than 36.5 %, and the daily index of agreement was above 0.8. further more, the model was capable of reproducing the o3 peak with an error of less than 18 %. these values, compared to established guidelines on model evaluation, indicate an acceptable performance of the model for the simulated period. however, the performance of co was not as good, and poor with respect to so2 and nox, indicating that additional work is needed to improve the overall performance of the model. spatially, the model tended to represent better the dynamics of pollutants in the west region of the gma, and temporally areas of improvement were detected in the simulation of nighttime periods.
Modelación inversa aplicada al análisis del inventario de emisiones de la zona metropolitana de Guadalajara, México
MENDOZA, Alberto;GARCíA, Marisa R.;
Revista internacional de contaminación ambiental , 2011,
Abstract: emission inventories are one of the sources of highest uncertainty in the process of applying complex air quality models. if there are errors in such information, the conclusions that result from the model application can be clouded. this work presents the application of an inverse modeling technique to adjust the emissions inventory of the guadalajara metropolitan area, mexico, which is then compared against the original inventory. the modeling system estimates, by means of an iterative process, scaling factors to the emissions of a base case in such a way that after applying such corrections the error between observed and simulated concentrations is minimized. the obtained results indicate that, during the analyzed case study, the daily co emissions needed to be globally varied from reductions in the order of ~16% to increments of ~60%. nox and so2 emissions are both apparently underestimated: nox emissions were increased in the range of 100% to 150% with respect to the base case, while so2 emissions increased in the range of 20% to 140% the nominal value. the changes suggested by the inverse model significantly increase the performance of the direct model, in the sense of its ability to replicate the observations, including o3, a secondary pollutant. however, not all discrepancies between observations and model-derived concentrations were solved due to the limitation of only scaling hourly domain-wide emissions but not by sub-domains since not enough monitoring stations were available and by the fact that the direct model is not perfect.
APLICACIóN DE UN MODELO DE CALIDAD DEL AIRE DE SEGUNDA GENERACIóN A LA ZONA METROPOLITANA DE GUADALAJARA, MéXICO
Alberto MENDOZA,Marisa R. GARCíA
Revista internacional de contaminación ambiental , 2009,
Abstract: La Zona Metropolitana de Guadalajara (ZMG) registra continuamente períodos con niveles insalubres de calidad del aire. Una de las herramientas más poderosas para describir la dinámica de contaminantes atmosféricos en zonas urbanas son los modelos matemáticos tridimensionales que describen el transporte y transformación química de los mismos. En este trabajo se presenta una primera aplicación de uno de dichos modelos, del California/Carneige Institute of Technology (CIT), a la ZMG. El período de modelación seleccionado abarca del 16 al 18 de mayo de 2001, y el dominio de modelación cubre una región de 25,600 km2 centrado en la ZMG. La evaluación estadística del desempe o del modelo indica que el CIT tuvo un mejor comportamiento durante los dos últimos días de modelación. En este período, respecto al O3, el sesgo normalizado fue menor a 23.5 %, el error normalizado menor a 36.5 % y el índice diario de ajuste superior a 0.8. Asimismo, el modelo fue capaz de reproducir el pico de O3 con un error inferior al 18 %. Estos valores, comparados con guías establecidas de evaluación de modelos de calidad del aire, indican un desempe o aceptable del modelo para el periodo simulado. No obstante, el desempe o respecto al CO fue regular, mientras que respecto al SO2 y NOx fue pobre, indicando que se requiere trabajo adicional para mejorar el desempe o general del modelo. Espacialmente, el modelo tiende a representar mejor la dinámica de contaminantes en la zona occidente de la ZMG, y temporalmente se apreciaron áreas de mejora en la modelación durante los períodos nocturnos.
Modelación inversa aplicada al análisis del inventario de emisiones de la zona metropolitana de Guadalajara, México
Alberto MENDOZA,Marisa R. GARCíA
Revista internacional de contaminación ambiental , 2011,
Abstract: Uno de los componentes con mayor grado de incertidumbre en el proceso de aplicar modelos complejos de calidad del aire es el inventario de emisiones. Si dicha información contiene errores, las conclusiones resultantes de la aplicación del modelo se verían empa adas. En este trabajo, se presenta el uso de una técnica de modelación inversa para ajustar el inventario de emisiones de la Zona Metropolitana de Guadalajara, México, el cual se compara contra el inventario de emisiones original. El sistema de modelación utilizado estima, a través de un proceso iterativo, factores de escalamiento a las emisiones de un caso base de tal manera que, al aplicar dichas correcciones, se minimiza el error entre las concentraciones observadas y las simuladas por el modelo directo. Los resultados obtenidos indican que, durante el caso de estudio analizado, las emisiones diarias de CO tendrían que estar sujetas a variaciones globales que van desde reducciones de ~16% a incrementos de ~60%. Las emisiones de NOx y SO2 aparentan estar subestimadas, requiriéndose aumentos del orden de ~100 % a ~150 % sobre el caso base para los NOx y de 20% a ~140% del valor base para el caso del SO2. Los cambios sugeridos por el modelo inverso aumentan significativamente el desempe o del modelo directo en el sentido de su capacidad de replicar las observaciones, incluyendo las de O3, un contaminante secundario. Sin embargo, no todas las discrepancias entre observaciones y valores simulados quedan resueltas al, por ejemplo, haber tenido que limitar el escalamiento de las emisiones hora a hora sin diferenciar entre subdominios, debido al número limitado de estaciones de monitoreo disponibles en la zona, y por el hecho real que el modelo directo no es perfecto.
On non-formality of a simply-connected symplectic 8-manifold
Gil R. Cavalcanti,Marisa Fernandez,Vicente Munoz
Mathematics , 2008, DOI: 10.1063/1.2958181
Abstract: We show an alternative construction of the first example of a simply-connected compact symplectic non-formal 8-manifold given in arXiv:math/0506449. We also give an alternative proof of its non-formality using higher order Massey products.
Efeitos de estimulantes vegetais na frutifica??o do tomateiro 'Miguel Pereira'
Carlucci, Marisa Vazquez;Castro, Paulo R.C.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1982, DOI: 10.1590/S0071-12761982000200003
Abstract: this work was carried out to determine the effect of plant growth stimulants on the fruiting of tomato plant lycopersicon esculentum cv. miguel pereira. in this trial cytozyme (biostimulant composed of kinetin, enzimes, micronutrients: zn, fe, cu, mn, bo, combined with derivatives of siloxane-etoxil ate and amino acids) and ergostim (n-acetyl-thiazolidin-4-carboxilic acid plus folic acid) were sprayed as follows: cytozyme at 5ml/l was sprayed once at 70 days; twice, one at 70 and other 8% days after planting. ergostim at 1,5 ml/l was sprayed once on the flowers of each cluster, and ergostim at 3,0 ml/l was sprayed three times, in the flowering, in the time of fruit set of the 2nd cluster and when fruits attained one half of their development. it was verified that cytozyme 5 ml/l applied 70 and 84 days after planting, increased the number and the length of the fruits and the total number of flowers. ergostim did affect neither flowering and fruiting of tomato plant nor the formation and germination of seeds.
Efeitos do atonik na frutifica??o do tomateiro 'Miguel Pereira'
Carlucci, Marisa Vazquez;Castro, Paulo R.C.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1982, DOI: 10.1590/S0071-12761982000200005
Abstract: this work was carried out to determine the effect of a plant growth stimulant on the fruiting of tomato plant, lycopersicon esculentum mill. cv. miguel pereira. in this trial, atonik (biostimulant composed of sodium mono-nitroguaiacol and other nitrogenated aromatic compounds) at 0.5 ml/l concentration was sprayed once just before flowering; once in the anthesis of the first two flowers of first cluster; three times, one in the anthesis of the first two flowers of first cluster and twice more at a 7 day interval; and three times, one when the first fruit from the first cluster was developed and twice more at a 7 day interval. it was verified that atonik applied when the first fruit of the first cluster was developed, and twice more at 7 day intervals, increased the number of fruits of the tomato plant; atonik applied during anthesis of the first two flowers of the first cluster damaged the classification of the fruits and increased the number of aborted flowers of the tomato plants.
Efeitos do ácido 3-clorofenoxipropi?nico na frutifica??o do tomateiro 'Miguel Pereira'
Carlucci, Marisa Vazquez;Castro, Paulo R.C.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1982, DOI: 10.1590/S0071-12761982000200006
Abstract: this work was carried out to determine the effect of a plant growth regulator on fruiting of tomato plant, lycopersicum esculentum mill. cv. miguel pereira. in this trial, 3-cp (3-chlorophenoxypropionic acid) was applied at 25, 50, 100 and 200 ppm. it was verified that treatment with 3-cp did not affect fructification and number of aborted flowers, but 3-cp 200 ppm reduced the total number of flowers and increased the percentage of parthenocarpic fruits.
Efeitos do Trylone e Tomatotone na frutifica??o do tomateiro 'Miguel Pereira'
Carlucci, Marisa Vazquez;Castro, Paulo R.C.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1982, DOI: 10.1590/S0071-12761982000200004
Abstract: this work was carried out to determine the effect of plant growth regulators on the fruiting of tomato plant, lycopersicon esculentum cv. miguel pereira. in this trial trylone (2-hidroximetil 4-chlorophenoxyaceticacid) at 10 ml/l and 20 ml/l, and tomatotone (p-chlorophenoxyacetic acid) at 10 ml/l and 20 ml/l were sprayed during anthesis of the first two flowers of the first three clusters. it was verified that tomatotone 10 ml/l and 20 ml/l increased the number, length and weight of tomato fruits; tomatotone 20 ml/l induced the formation of fruits with a better classification. tomatotone and trylone reduced the number of aborted flowers. trylone 20 ml/l increase the percentage of parthenocarpic fruits.
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