The addition of 10(-5) M to 10(-3) M neomycin to incubations of subcellular fractions of guineapig cerebral cortex increased the labelling of phosphatidylinositol phosphate and decreased the labelling of phosphatidylinositol diphosphate by [gamma-32P]ATP. The effect was observed in all subcellular fractions tested and depended on the cationic form of the antibiotic. Similar effects on lipid lab...

Solanum nigrum(Black Nightshade) is a medicinal plant member of the Solanaceae family of plants. This family comprises many genera, well known for their therapeutic properties. In addition to S. nigrum, this family includes fruits and vegetables such as potato (Solanum tuberosum), tomato, peppers, ornamental plants such as petunia, and other medicinal plants.The present work is focused on the p...

We have studied the effects of poly(acrylic acid)–poly(ethylene oxide) (PAA–PEO) comb polymers on the stability of aqueous BaTiO3 nanoparticle suspensions over a wide pH range in the presence and absence of monoand divalent salt species. The comb polymer architecture consists of charge-neutral PEO teeth attached at random intervals along an ionizable PAA backbone. Potentiometric titrations, lig...

Temperature-induced aqueous surfactant two-phase system (T-ASTP), which was found to be of generic importance, was investigated in a series of conventional mixed cationic-anionic surfactant systems. On the basis of the investigations of turbidity, dynamic light scattering, transmission electron microscopy, and fluorescence resonance energy transfer, the formation of T-ASTP can be attributed to ...

In this study the properties of poly(D,L-lactide-co-glycolide) (PLGA) dispersions containing a thermoresponsive cationic copolymer were investigated. The PLGA dispersions were prepared by interfacial deposition in aqueous solution and were rendered thermoresponsive by addition of a cationic poly(N-isopropyl acrylamide) (PNIPAm) graft copolymer. The copolymers used had the general composition PD...

A long-term (10 month exposure) experiment on effects of suspended sediment on the mortality, growth, and recruitment of the reef corals Montipora capitata and Porites compressa was conducted on the shallow reef flat off south Moloka'i, Hawai'i. Corals were grown on wire platforms with attached coral recruitment tiles along a suspended solid concentration (SSC) gradient that ranged from 37 mg l...

Several proposals to construct artificial photoresponsive polymer systems have been described. chromophores in the backbone reversibly changed the conformation by ultraviolet light irradiation(410 > > 350 nm), which causes the trans to cis isomerization of the chromophores. Aqueous solutions of poly(N-isopropylacrylamide) with pendant azobenzene chromophores showed a photostimulated phase separ...

Dirnberger, J. M. and J. Weinberger. 2005. Influences of lake level changes on reservoir water clarity in Allatoona Lake, Georgia. Lake and Reserv. Manage. Vol. 21(1):24-29. In Allatoona Lake (Georgia USA), secchi transparency (measured every 2 to 4 weeks during a Phase I U.S. EPA Clean Lakes Study) was typically 5to 8fold greater in summer than late autumn and winter. The intensity of storms i...

Turbidity (T) has been widely used to detect the occurrence of pollutants in surface water. Using data collected from January 2013 to June 2014 at eleven sites along two rivers feeding the Taihu Basin, China, the relationship between the concentration of five metals (aluminum (Al), titanium (Ti), nickel (Ni), vanadium (V), lead (Pb)) and turbidity was investigated. Metal concentration was deter...