Nitrogen is one of the fundamental nutrients for algal growth, underpinning microalgal biochemical composition. Therefore, this study compared growth and proximate compositions Tetraselmis chuii (Butcher, 1959), cultured in different nitrate (NaNO3 ) concentrations (25, 50, 100, 200 500 mg L-1). Thus, cell density, optical specific rate division T. were measured daily. Furthermore, protein car...

Increasing petroleum costs and climate change have resulted in microalgae receiving attention as potential biofuel producers. Little information is available on the diversity and functions of bacterial communities associated with biofuel-producing algae. A potential biofuel-producing microalgal strain, Nannochloropsis oceanica IMET1, was grown in Permian groundwater. Changes in the bacterial co...

We generalize the approach first proposed by Manton [Nucl. Phys. B 150, 397 (1979)] to compute solitary wave interactions in translationally invariant, dispersive equations that support such localized solutions. The approach is illustrated using as examples solitons in the Korteweg-de Vries equation, standing waves in the nonlinear Schrödinger equation, and kinks as well as breathers of the sin...

Alkyl ethoxysulphates (AES) are anionic surfactants widely used in numerous commercial and industrial applications. In spite of the high AES volume consumption a few data concerning the occurrence, fate and effects of AES in marine environments are reported in literature. The objective of this study is to evaluate the biodegradability and toxicity of AES in pristine sea water. Ultimate biodegra...

Numerous recent studies have identified microalgae biofuel as one of the major renewable energy sources for sustainable development due to their high biomass productivity, lipid content, and availability locally adapted strains in various geographical locations. There been minimal on fatty acid composition production local species Sabah, Malaysia. Thus, screening capable producing biodiesel can...

The general solution of the antifield-independent Wess-Zumino consistency condition is worked out for models involving exterior form gauge fields of arbitrary degree. We consider both the free theory and theories with Chapline-Manton couplings. Our approach relies on solving the full set of descent equations by starting from the last element down (“bottom”). * [email protected], [email protected]...