Enclosure experiments

Reports continue to appear dealing with the antiherbivore properties of cyanogenic plants. Eor example. Saucy et al. (1999) demonstrated, using laboratory as well as outdoor enclosure experiments, that voles (Arvicola terrestris) showed clear... 

Jedrzejewska, B. and Jedrzejewski, W. (1990). Antipredator behaviour of bank voles and prey choice by weasels enclosure experiments. AnnalesZoologiciEennici 17,321-328. 

Thingstad, T. F., H. Havskum, H. Kaas, D. Lefevre, T. G. Nielsen, B. Riemann, and P. J. LeB. Williams. 1999a. Bacteria-protist interactions and organic matter degradation under P-limited conditions. Comparison between an enclosure experiment and a simple model. 

Rydin, E., Hyenstrand, P., Gunnerhed, M., and Blomqvist, P. (2002). Nutrient limitation of cyanobacteria blooms An enclosure experiment from the coastal zone of NW Baltic Proper. Mar. Ecol. Prog. Ser. 239, 31-36. 

Kudela, R., and Dugdale, R. (2000). Regulation of phytoplankton new production as determined from enclosure experiments with nutrient additions in Monterey Bay, California. Deep Sea Res. II 47, 1023-1053. 

S. Halac, M. Felip, L. Camarero, S. Sommaruga-Wograth, R. Psenner, J. Catalan, R. Sommaruga (1997). An in situ enclosure experiment to test the solar UVB impact on plankton in a high-altitude mountain lake. I. Lack of effect on phytoplankton species composition and growth. J. Plankton Res., 19,1671-1686. 

From enclosure experiments in Narragan-sett Bay, Hunt and Smith (1983) estimated that by mechanisms such as oxidation of... 

Zhang, X., Xie, R, Hao, L., Guo, N., Gong, Y, Hu, X., Chen, J. and Liang, G. Effects of the phytoplanktivo-rous silver carp (Hypophthalmichthys molitrixon) on plankton and the hepatotoxic microcystins in an enclosure experiment in a eutrophic lake. Lake Shichahai in Beijing, Aquaculture, 257, 173, 2006. 

Mach, C. E. P. L. Brezonik, 1989. Trace metal research at Little Rock Lake, Wisconsin background data, enclosure experiments, and the first three years of acidification. Sci. Total Envir. 87/88 269-285. 

From enclosure experiments in Narragansett Bay, Hunt and Smith (1983) estimated that by such mechanisms the anthropogenic proportion of cadmium in marine sediments is released to the water within approximately 3 years. For remobilization of copper and lead, approximately 40 and 400 years, respectively, is needed, according to these extrapolations. 

Radionuclides as tracers provide tools of major importance in environmental research when used in conjunction with other ecological approaches, and provided careiiil laboratory and/or field-enclosure experiments designed to determine mechanisms accompany extensive field applications. 

Experiments and even production operations can be conducted at any frequency providing the radiated and conducted signals meet the apphcable tfi limits for ISM equipment. Tests to certify this stipulation must be carried out before inception of operations. This implies weU-shielded enclosures at high power levels which is expensive but justified in certain apphcations. 

Eoss factor This is a ftmetion of losses (fk ) in the tnain conductor (IV,) and the enclosure (IVi). A curve as illustrated in Figure 31.12 can be established between the losses versus thickness (/) of the enclosure by experiments. 

Cooling tower fan motors must be properly selected for long life and trouble free operation. In addition, it is important to match the motor s enclosure to the application. Motors in draw through applications that are mounted directly in the air stream, for example, experience tough duty and must be of the totally enclosed type. Motors are categorized as follows ... 

Experiments on the scale of 1 to 1 are often used to study the local ventilation around an operator s workplace. Tracer gas is used to simulate the contaminant transport, and a high concentration level of the model tracer gas makes it possible to work with a convenient level of concentration for the measurements. Figure 12.31 shows an enclosure with an emission source S and a laboratory. setup with a model source 5,. The dimensionless concentration c/cg is... 

The assumption that an impurity, probably water, gives rise to bimodal MWD with f-BuX/Et2AlCl system was confirmed directly by experiments. First polymerizations were carried out at —60 °C by using the H20 /Et2AlCl system, i.e., by increasing the moisture content in the enclosure from the usual <30 ppm to 150 ppm. Yields were 30% or less. The GPC trace of these PIB s (Fig. 9) coincides with those... 

Intercomparison of Sampling Devices and Analytical Techniques Using Seawater from a CEPEX (Controlled, Ecosystem Pollution Experiment) Enclosure... 

It is feasible to capture a large volume of seawater in the range of 65 000 1 by the CEPEX approach for the purpose of sampler intercomparison. It is possible by artificial stimulation of a plankton bloom and detritus removal to produce a reasonably homogeneous body of seawater for the study. Proximity of the in situ enclosure for the experiment and the on-shore, clean laboratory facilities eliminate errors introduced by shipboard contamination under less than ideal conditions on cruises. 

R.D. Bieniarz, Fire Experiments on Structural Foam Plastic Equipment Enclosures. Study for the Society of the Plastics Industry, Underwriters Laboratories, 1981. 

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