Dzialowski, A.R., S.H. Wang, N.C. Lim, J.H. Beury and D.G. Huggins. 2008. Effects of sediment resuspension on algal biomass and nutrient concentrations in reservoirs of the Central Plains. Lake Reserv. Manage. 24:313-320. Historically, lake and reservoir management has focused on controlling external nutrient loading. However, it is becoming increasingly clear that internal mechanisms, such as ...

in southeast asia, aedes aegypti (l.) has been incriminated as principal vector of dengue viruses and ae. albopictus as the secondary vector of dengue fever. therefore, the aim of this study was to investigate the effectiveness of three for-mula tions of pyrethrin derived from tanacetum cinerariaefolium against the dengue/dengue haemorrhagic fever vectors aedes aegypti and ae. albopictus in the...

The aim of this study was to determine the toxicity cefixime in inlet solution and effluent treated with sono-electro-Fenton process using standard strains microorganisms. This research performed as an experimental study, which conducted on a laboratory scale. Escherichia coli (gram-negative) Staphylococcus aureus (gram-positive) were used for bioassay. First, stock 1000 mg/L containing Cefixim...

The insecticidal activity of a cockroach gel bait containing a chitin synthesis inhibitor, noviflumuron, was evaluated using laboratory and field strains of the German cockroach, Blattella germanica (L.). Noviflumuron gel bait (0.01-5 mg g(-1)) caused > or = 90% nymphal mortality to laboratory and field strains of B. germanica in choice tests after 11 and 19 days of continuous exposure respecti...

Shortly after Kangas et al. (1) reported that a-terpineol was the major component of a primary host attractant for Blastophagus piniperda L., Silverstein, Rodin, and Wood (2) revealed the identity of three other terpene alcohols that play a role in the orientation of bark beetles. However, Silverstein et al. concluded, from laboratory bioassay, that a mixture of the three terpene alcohols they ...

Although herbicides are used for weed control in the field, their residues can have unfavourable environmental impacts. The objective was to determine sulfosulfuron herbicide wheat field soil using bioassay and laboratory (HPLC) methods. two-year experiment a randomised complete-block design (RCBD) with three replicates at control, recommended (26.6 g/ha, D1) doubled (53.2 D2) rates. Soil sampl...