Esterase activity of an aqueous extract of the green bean was
separated into fourteen bands, while aqueous extracted pea esterases
revealed seven bands, by polyacrylamide-gel electrophoresis. The
fourteen bands of bean esterase activity formed three groups; slow,
intermediate and fast moving. α-Naphthyl acetate, propionate, and
n-butyrate and AS naphthol acetate...
This study was designed to assess chiorpyrifos exposure of a group of farmers by determining internal dose associated with a given application of this insecticide. This involved the monitoring of urinary levels of 3,5,6 trichloro-2-pyridinol (TCP), the major metabolite of chlorpyrifos. Incidental exposure was evaluated by determining the levels of...
Relaxor characteristic of the solid solution (1-x)BaTiO₃-(x)Bi(Zn₁/₂Ti₁/₂)O₃ (BTBZT) was investigated in this research. X-ray diffraction technique and Raman spectroscopy revealed the crystal structure of BT-BZT at various compositions. For compositions with x ≤ 0.08, the solid solutions exhibited clear tetragonal symmetry and transitioned to pseudo-cubic symmetry as the content of...
Best available copy. In 1984, longstanding concerns about pollution in Yaquina Bay impelled the U.S. Food and Drug Administration to make a comprehensive sanitary survey of the Yaquina River, with particular emphasis on areas where oysters were grown. The report states that the oyster plots endured "sporadic poor water quality,"...
The influence of substrate and enzyme concentration on the rate
of saccharification of two defined, insoluble, cellulose substrates,
Avicel and Solka-Floc, by the cellulase enzyme system of Trichoderma
viride has been evaluated. Assays utilized enzyme concentrations
ranging from 0.014 to 0.056 filter paper unit per mL and substrate
concentrations up...
Irrigated agriculture constitutes the greatest consumptive water use globally, so that irrigation efficiency measures are an important part of global efforts to best utilize this limited resource. However, greater irrigation efficiency must be achieved while simultaneously maintaining or increasing crop yields and farming profitability. Incremental water use decisions are made...
The sea offers a wide variety of potentially useful resources. Marine algae have been a rich source of structurally unique natural products showing diverse biological properties. The current need to develop new antifungal, antibiotic, anticancer and antiviral drugs has prompted intense research efforts into the discovery, isolation and structure determination...