the purpose of this research was to prepare a floating matrix tablet containing domperidone as a model drug. polyethylene oxide (peo) and hydroxypropyl methylcellulose (hpmc) were evaluated for matrix-forming properties. a simplex lattice design was applied to systemically optimize the drug release profile. the amounts of peo wsr 303, hpmc k15m and sodium bicarbonate were selected as independen...

A hydroelastic model is developed of a floating flexible structure in the presence submerged perforated base connected with mooring lines under oblique wave action. Using velocity decomposition method, analytical solution referred obtained finite water depth. The convergence for different incidences examined, and present results deflection amplitude are compared experimental datasets numerical ...

In contrast to floating on the surface of distilled water, ants were immediately submerged after being placed in the potassium oleate (PO) water solution, which led to immobilization within minutes. However, some workers survived after being immersed in 0.03% PO water solution at 25◦C for up to 640 min. Elevated temperature of the PO water solution is needed to kill ants within a shorter time f...

Analyses of terrestrial sources of sodium and estimates of the sodium requirement of moose (Alces alces) on Isle Royale, Lake Superior, suggest that availability of the element controls the moose population. The terrestrial vegetation is very poor in the element, but, as elsewhere, submerged and floating leaved water-plants are relatively rich. Consumption of such plants in summer would provide...

Aquatic plants can use differential allocation (trade-off) of carbon among their structures depending on the nutrition concentration. Given that N and P are limiting in the growth of plants, our questions were: Are the N and P concentrations in S. auriculata related to the biomass allocation to its structures? Is a differential allocation of N and P between floating and submerged leaves? We eva...

1. Current State of Aquaculture and Environment 2. Aquaculture Water Constituents 3. Waste Water Discharge Guidelines for Aquaculture 4. Introduction to Recirculating Aquaculture Systems (RAS) 5. Recirculating Aquaculture System Applications 6. Primary Clarification – Suspended Solids removal 7. Bacterial Processes 7.1 Nitrification 7.1.1 Nitrition 7.1.2 Nitration 7.2 Denitrification 8. Filtrat...

Multi proxy records relating to climate and vegetation have been obtained for a core spanning the last 40 kyr from the Heqing Lake Basin (26 N, 100 E; 2200 m asl.), Yunnan Province of southwestern China. Compound-specific carbon isotope records for the vascular plant leaf wax hydrocarbons, the C23–C33 n-alkanes, and for the algal hydrocarbons, the C23 and C25 n-alkenes and a C30 cyclobotryococc...