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[PDF] Top 20 The bioconcentration factor of pesticides in potatoes. - Portal Embrapa

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The bioconcentration factor of pesticides in potatoes. - Portal Embrapa

The bioconcentration factor of pesticides in potatoes. - Portal Embrapa

... Thus, the rrodel assurres that the bioconcentration factor (BCF) of pesticides in potatoes is a resu~ ri the pesticide rnass balance between pesticide concentration in the[r] ... See full document

8

Application of new high-performance liquid chromatography and solid-phase extraction materials to the analysis of pesticides in human urine. - Portal Embrapa

Application of new high-performance liquid chromatography and solid-phase extraction materials to the analysis of pesticides in human urine. - Portal Embrapa

... amount of the C 18 ...placed in a 120 8C oven for 4 h, tion (5 min, 3000 g). A 3-ml aliquot of the superna- at atmospheric ...immobilization the tant containing ... See full document

7

Effects of separate and combined exposure to the pesticides methamidophos and chlorothalonil on the development of suckling rats. - Portal Embrapa

Effects of separate and combined exposure to the pesticides methamidophos and chlorothalonil on the development of suckling rats. - Portal Embrapa

... as the primary source of nutrition, grooming and warmth required for survival, influences the development of major regulatory systems underlying behavior and physiology in the rat ... See full document

8

Determination of pesticides in water by liquid chromatography-(Electrospray Ionization)-mass spectrometry (LC-ESI-MS). - Portal Embrapa

Determination of pesticides in water by liquid chromatography-(Electrospray Ionization)-mass spectrometry (LC-ESI-MS). - Portal Embrapa

... The pesticides studied in this paper include several types of compounds widely used in Europe including organophosphorus, benzimidazole, carbamate, triazines and ...Many of ... See full document

8

Modelling pesticide uptake by potatoes through an ordinary differential equation coupled with a dispersion-advection equation - Portal Embrapa

Modelling pesticide uptake by potatoes through an ordinary differential equation coupled with a dispersion-advection equation - Portal Embrapa

... selected the imidacloprid insecticide to simulate the effects that pesticide leaching and degradation in the soil have upon pesticide accumulation in ...receptors in the ... See full document

16

Pesticide bioconcentration factor estimate in apples. - Portal Embrapa

Pesticide bioconcentration factor estimate in apples. - Portal Embrapa

... eam concentration facta-; stem-water partition coefficient; and BCF i n apples (Table 2~ Sixteen of the thirty si< pesticides shew .g K o, > 3.5 , what mean[r] ... See full document

7

Degradation of the herbicide sulfentrazone in a Brazilian typic hapludox soil. - Portal Embrapa

Degradation of the herbicide sulfentrazone in a Brazilian typic hapludox soil. - Portal Embrapa

... conducted in soils under temperate climate conditions, predominantly in Europe and North America ( Dores and Delamonica- Freire, 1999 ), the fate of pesticides and their metabolites ... See full document

8

Erythrocyte parameters and condition factor of Gymnotus sp. (Gymnotiformes: Gymnotidae) under growing conditions. - Portal Embrapa

Erythrocyte parameters and condition factor of Gymnotus sp. (Gymnotiformes: Gymnotidae) under growing conditions. - Portal Embrapa

... values of red blood cells for Gymnotus sp varied, which may be due to nutritional factors and age, since the animals sampled were of different ...within the reference standards for the ... See full document

6

Validation of neurobehavioral studies for evaluating the perinatal effects of single and mixture exposure to pesticides. - Portal Embrapa

Validation of neurobehavioral studies for evaluating the perinatal effects of single and mixture exposure to pesticides. - Portal Embrapa

... that the o bserved effects occu r due to exposure to the substance test and not m o th er ...toxicity. In m am m als, the norm al perform ance o f the maternal functions for the ... See full document

25

Organic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects. - Portal Embrapa

Organic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects. - Portal Embrapa

... Samples of an Oxisol were collected in Ribeirão Preto re­ gion, São Paulo ...to the USDA system (U SD A Soil Conservation ...techniques. The point of zero charge (PZC) was determ ined ... See full document

8

Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.). - Portal Embrapa

Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.). - Portal Embrapa

... The bioconcentration factor of a substance (BCF) in an organism is a coefficient that describes the increase in concentration of herbicides in the ... See full document

7

Model approach for estimating potato pesticide bioconcentration factor. - Portal Embrapa

Model approach for estimating potato pesticide bioconcentration factor. - Portal Embrapa

... estimates the bioconcentration factor (BCF) of pesticides in potatoes suppos- ing that the pesticide in the soil solution is absorbed by the ... See full document

6

Assessing the risk of the evolution of resistance to pesticides using spatially complex simulation models. - Portal Embrapa

Assessing the risk of the evolution of resistance to pesticides using spatially complex simulation models. - Portal Embrapa

... iteration of the process, we make some assumptions about the parameter values based on what we know about use of Bt crops and resistance to the Cry proteins used in them to ... See full document

28

Public sector and pesticide industry perception of the role of pesticides in integrated pest control programs. - Portal Embrapa

Public sector and pesticide industry perception of the role of pesticides in integrated pest control programs. - Portal Embrapa

... One of its main objectives is stimulating the implantation of Integrated Pest Management Programs, comprehending National Product Centers, Official Research Institutes, Plant Protectio[r] ... See full document

15

Agua. - Portal Embrapa

Agua. - Portal Embrapa

... ~ 27 Para a coleta de água de chuva, coletores devem ser instalados em pontos estratégicos e as amostras coletadas após um período de precipitação.. Em geral determina-se deposição atmos[r] ... See full document

8

Girassol - Portal Embrapa

Girassol - Portal Embrapa

... Na definição dos riscos climáticos, para a cultura do girassol, além das três variáveis acima citadas, com influência direta sobre o crescimento e o desenvolvimento das plantas e, cons[r] ... See full document

17

Alstroemeriaceae. - Portal Embrapa

Alstroemeriaceae. - Portal Embrapa

... m in a d o , base aten u a d a, g la b ra s ou p ap ilo sa s na face ab a x ia ...l. In flo r e sc ê n c ia cim eira u m b e lifo n n e sim ples; brácteas folhosas, m em ­ ... See full document

7

Microeconomia. - Portal Embrapa

Microeconomia. - Portal Embrapa

... Um dos maiores críticos de Marshall, Josef Steindl (1945) expõe que o autor deu maior importância ao fator de involução, a partir de certo tamanho da empresa, quando deveria atentar-se mais profundamente (e não com uma ... See full document

15

Electroanalytical techniques for the determination of pesticides in foods.

Electroanalytical techniques for the determination of pesticides in foods.

... Uma desvantagem apresentada pelas técnicas eletroanalíticas é a seletividade eletroquímica, sendo este inconveniente, possivel- mente, solucionado com a utilização de eletrodos quimicamente modificados com polímeros, ... See full document

8

Energy balance in irrigated wheat in the Cerrados Region of central Brazil. - Portal Embrapa

Energy balance in irrigated wheat in the Cerrados Region of central Brazil. - Portal Embrapa

... Total amount of water evapotranspired during the crop cycle and the energy balance terms varied year to year due to regional advection; In 1982, a less advective year, the total amount o[r] ... See full document

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