[PDF] Top 20 An. Acad. Bras. Ciênc. - vol.86 número2

... have an understanding of the hydrodynamic characteristics of an area before proposing significant alterations to the ...utilizing an estuarine ecosystem in a manner compatible with protecting both ... See full document

... Sr/ 86 Sr values vary from ...Sr/ 86 Sr from 0.7076 to 0.7077 while in section 3, 87 Sr/ 86 Sr from ...Sr/ 86 Sr values are around 0.7080. The values of 87 Sr/ 86 Sr observed in ... See full document

... for an oviposition site and, therefore, the female’s choice is based on "vocalization quality" (Ryan 1980), (2) the vocalization of the male within the bromeliad indicates bromeliad characteristics of ... See full document

... collected and the solvent evaporated under reduced pressure. The lipid fraction was dried to constant weight in an oven at 60°C. Total lipids was also quantified according to the methodology of Bligh and Dyer ... See full document

... Figure 3 - Curve of the expected size of sample units (Average sample number) for the test sequential probability ratio to total population of adult Bemisia tuberculata (Hemipt[r] ... See full document

... Many studies performed with plants resulted in the development of natural antioxidant formulations. However, there is not enough scientific information about antioxidant properties of various plants, especially those ... See full document

... Although the cytotoxic activity of acetogenins has already been described, the high level of this activity observed in these compounds confirms their potential for being used in anti-cancer therapy. Regarding ... See full document

... 107-376g and with a standard length of 15.4-25 cm, 104 specimens of thraira, Hoplias malabaricus (Bloch 1794), of weight 110-530g and with a standard length of 17.8-27.2 cm, in the Arari Lake, Marajó Island, State of ... See full document

... so-called “Stenorrhynchos Clade”, sensu Salazar et al. (2003). To date, these taxa have not been formally cited for the orchid flora of Rio Grande do Sul (Rambo 1965, Pabst and Dungs 1975). The purpose of the present ... See full document

... in RJ were destroyed. In contrast to sugar cane, coffee was also planted on steep slopes, causing massive erosion problems and landslides. In 1860 most of the coffee production moved from RJ to the Paraiba valley in São ... See full document

... Production of fibrous activated carbons from natural cellulose (jute, coconut) fibers for water treatment applications. Mechanical property evaluation of sisal–jute–glass fi[r] ... See full document

... is an important bioindicator, as the gases that penetrate the plant's leaves through the ostiole can cause alterations in their physiology, metabolism, ultra structure, and/or cellular ... See full document

... in an extractive form and information about production technologies are essential for its seedling propagation and rational use, however, the seedling production is hampered due to the small number of seeds per ... See full document

... Although researches relate pathogenic tole rance to melanization’s reactions with consequent involvement of 22 prophenoloxidases cascade (Wilson et al. 2001), very little is known about the phenoloxidase activity in ... See full document

... and an abruptly tapered bulb with parallel low keels on basal embolus (Fig. 2A, B). It resembles Chaco sanjuanina but differs in its small size, and male of C. ansilta sp. nov. only have two spines on tibial ... See full document

... Therefore, the present study aims to characterize the oils extracted from seeds of Hamlin, Natal, Pera-rio and Valencia orange varieties (Citrus sinensis), as to the levels of total ca[r] ... See full document

... and Amazonia (Makalata) recorded together for the first time (Table I). Similarly, some fossil didelphids of Gruta dos Moura are associated with open and deciduous forest areas and others with humid forest (Villa Nova et ... See full document

... methanol as a direct carbon source via serine biosynthesis and 2) decreased carbon loss from photorespiration. Nonomura and Benson (1992a, b) declared that water use efficiency significantly increased in methanol treated ... See full document

... of an infinite number of oscillators (degrees of freedom) is not manda- tory for the emergence of ...present an aperiodic behavior, though converging to a limited subspace named ... See full document

... The digestive tracts of 44 specimens of Schizodon knerii were studied using anatomical, histological and histochemical techniques. The mouth has terminal position, the lip epithelium is squamous stratified with mucous, ... See full document