The biogeographical coverage of the Lao PDR protected area system is amongst the most comprehensive in the world. This, coupled with the government’s progressive policy of participatory management, is a notable achievement for one of the world’s ‘Least Developed Countries’ and a foundation of great promise for biodiversity conservation and national development in the country. The challenge now ...

dead yeast cells are an abundant residue of the brazilian ethanol industry and the industries still don’t have a proper or desirable destiny for all these cells, which means tons of vitamins and proteins that have not a major end. in the other hand, heavy metal residues are a problem, especially for leather industry, where brazil is also a great producer. in this work, dead yeast cells were use...

As the driving energy to deal with decrease of interlayer pressure caused by continuous oil production, layered water injection technology has characteristics inhibiting production and slowing down increase oil/gas ratio. In engineering, is often used improve properties crude oil, such as excessive viscosity, weak liquidity, depleted storage, avoid formation dead oil. Injecting appropriate amou...

This paper proposes an adaptive approximation-based controller for uncertain strict-feedback nonlinear systems with unknown dead-zone nonlinearity. Dead-zone constraint is represented as a combination of a linear system with a disturbance-like term. This work invokes neural networks (NNs) as a linear-in-parameter approximator to model uncertain nonlinear functions that appear in virtual and act...

The acute toxic effects of a Nigerian crude oil (Egbogoro Liner II) to the mangrove oyster Crassostrea gasar were studied in bioassays. Tests were conducted over a 96-hr period after acclimatization of individuals in the laboratory, initially with a population comprising a broad size categories (11 60 mm) in range finding tests. The tests were semi-static bioassays in which the exposure media w...