O saber/conhecimento: campos epistêmicos

Impactos potenciais das alterações no Código Florestal sobre a vegetação de campos rupestres e campos de altitude

article+bn04310042010. Abstract: The Brazilian campos rupestres and campos de altitude are characterized by mosaics of vegetation types and are better represented above 900 m in the Espinhaço Range and above 1500-2000 m in the Serra do Mar and Serra da Mantiqueira. They bear high species richness at local and regional scales and numerous relicts and endemisms. These montane refuges, which are o...

Ecology of Floodplain Campos de Murundus Savanna in Southern Amazonia

Procedimiento para el Muestreo y Reconstrucción de Campos Gausianos

The description of the optimal Sampling – Reconstruction Procedure (SRP) of Gaussian fields is given on the basis of the conditional mean rule when the quantity of samples is limited. The Gaussian fields are described by two types of space covariance function: exponential and Gaussian. A lot of both reconstruction and reconstruction error surfaces are obtained by numerical calculation. We chang...

سنتز، بررسی طیفی و ساختاری ترکیبات جدید فسفرآمید دارای قطعه های (c(o)nhp(o و (s(o)2nhp(o

در این پژوهش، تعدادی ترکیب فسفر-کلر با فرمول های xc(o)nhp(o)cl2 x]=cf3، ccl3، cf2cl و[ch2cl ، 4-ch3-c6h4nhp(o)cl2 ، 4-ch3-c6h4s(o)2nhp(o)cl2 و [4-ch3-c6h4nh]2p(o)cl تهیه و برای سنتز فسفر آمیدهای با فرمول ccl3c(o)nhp(o)y ] [nh(ch2)3nh=y (1) و [nhch2c(ch3)2ch2nh=y] (2)، [h2n(ch2ch3)2][4-ch3-c6h4s(o)2nhp(o)n(ch2ch3)2].h2o (3)، 4-ch3-c6h4nhp(o)[n(ch3)(ch2c6h5)]2 (4)، [4-ch3-c6h4nh]2p(o)op(o)[nhc6h4...

Cheirimedon foscae sp. nov. (Amphipoda: Lysianassidae: Tryphosinae) from the deep sea Campos Basin, Southwestern Atlantic Ocean.

A new species of lysianassid amphipod belonging to the genus Cheirimedon was collected on the continental slope of the Campos Basin, the largest oil reserve in Brazilian waters. This is the first record of the genus Cheirimedon from the Atlantic Ocean, which was previously restricted to the Antarctic and Tasmanian sea. The new species is fully illustrated and compared with related species. Addi...