Information on fish communities within seven streams and rivers in or near Dayton-Montgomery County Park District reserves was collected and analyzed to compile a preliminary species list for Park District waters and to estimate water quality of the streams. Fifty-two species of fishes were found in lotic habitats in or near the reserves, and more extensive sampling likely will reveal the prese...

Fifty-two weanling pigs from six litters(Pond et al., 1968) were fed a standard 18% protein corn-soybean meal diet from weaning to slaughter. The six litters were from gilts paired on the basis of parturition date so that one gilt fed the control diet and one fed the “protein-free” diet (0.5% protein) from week 4 of pregnancy to parturition made tip each pair. Each dam was fed the control diet ...

To test the validity of a theoretical model of aortic valve closure, based upon the observations in a two-dimensional analogue, the effect of some hemodynamic factors on aortic valve behaviour was studied in open-chest dogs. Direct cinematography was used to record aortic valve movements. The ECG, instantaneous ascending aortic blood flow as well as left ventricular and aortic pressures were re...

Profiles of polyribosomes were obtained from etiolated stem segments of Pisum sativum L. var. Alaska isolated in various buffers. Tissue homogenized in a medium containing 0.2 M tris-HCI, pH 8.5, 0.2 M sucrose, 30 mM MgCL, and 60 mM KCI yielded polyribosomes exhibiting far less degradation than tissue homogenized in conventional media containing tris-HCl at lower ionic strength and pH. A furthe...

Cheng, W.-X., Coleman, D.C. and Box, J.E., Jr., 1991. Measuring root turnover using the minirhizo° tron technique. Agric. Ecosystems Environ., 34: 261-267. Measurement of root turnover has been one of the most difficult problems in terrestrial ecosystem studies owing to the lack of an appropriate method. In this paper, a method for measuring intraseasonal root turnover is described. The recentl...

Membrane splitting by freeze-fracture has been used as a preparative tool for chemical analysis of outer and inner "hal]"-membranes. In a previous report I showed that monolayers of human erythrocytes, bound to cationized glass, fracture nonrandomly, producing membrane fractions substantially enriched in outer or inner "halves." For the present study cells were used in quantities compatible wit...

Pharmacological effects of HQ-275 on CCl4-liver injury ha been in vestigated, and the results compared with those of rats treated with CCl4 plus HQ 275 with those of normal rats and only CCl4-treated rats. In the excretion test of biliary flow, bilirubin, solid contents and B•S•P, rats treated with CCl4, alone or with CCl4, plus H...

Effects of crude extract of Microcystis aeruginosa containing microcystin-LR on the germination, growth and chlorophyll content of Zea mays was studied. Soaking of Z. mays seeds for 24 hrs in the cell-free medium during death phase of M. aeruginosa induced a significant reduction in root, shoot lengths, number of lateral roots, fresh and dry weights, leaf area and pigment contents. Soaking of Z...

In order to determine the response of some tropical grass species to low light situations such as under plantation crops, seasonal cloud cover, etc., six tropical forage grasses were evaluated over a 20 month period on an Oxic Haplustoll in Hawaii (100 m above sea level) under four light regimes (100, 70, 45, and 27/, daylight using polypropylene netting) in the field. The forage grasses evalua...

WYATT, S. D., and C. W. KUHN. 1979. Replication and properties of cowpea chlorotic mottle virus in resistant cowpeas. Phytopathology 69:125129. Although cowpea chlorotic mottle virus (CCMV) caused no symptoms pool of RNA formed soon after inoculation. Several properties of CCMV on cowpea P1 186465, virus could be isolated from the inoculated primary produced in the resistant plants were similar...