Loons

Fig. 4 A-scan of a 0.5 mm steel plate (RF-recording) with 400 MHz sample frequency (HILL-SCAN 3010HF), 0.1 V/div. and lOOns/div.

Van Loon, J. C. Analytical Atomic Absorption Spectroscopy. Academic Press New York, 1980. 

Van Loon, J. G. Selected Methods of Trace Metal Analysis Biological and Environmental Samples. Wiley-lnterscience New York, 1985. 

V. Loon, Plasma Source Mass Spectroscopy, CRC Press Inc., Boca Raton, Fla., 1994. 

FIG. 14-35 Transition from frotb to spray regime for boles of various diameters. Values on curves are liquid loadings, mV(b m weir length). To convert cubic meters per bour-meter to cubic feet per bour-foot, multiply by 10.764 to convert (meters per second) (Idlograms per cubic meterto (feet per second) (pounds per cubic foot) , multiply by 0.8197 and to convert millimeters to inches, multiply by 0.0394. [Loon, Finczewski, and Fell, Trans. Inst. Gbem. Eng., 5i, 374 (1,973).]... 

Percent stage efficiency = lOON/number of actual stages (15-28)... 

Alh Standard 671, Special-Purpose Couplings for Refinery Services, See nrid Edition, Washington, D.C. American Petroleum Institute, loon Reaffirmed 1993. 

Authorized a Sinte Revolving Loon Fiiinl (SRF) program to help publie water systems finance projects needed to meet SDWA requirements ... 

Particle Retention > 10()n > lOOii >ioon > ioon > lOOn > lOOn > lOOn > ioon > > iOOn lOOn 40ii > 600ii >40n... 

Water birds have not been shown to be directly affected by acidification. However, the prey of waterbirds may be of concern as these lower food-chain organisms may have elevated levels of toxic metals related to acidification of their habitat. Moreover, most water birds rely on some component of the aquatic food-chain for their high protein diet. Invertebrates that normally supply caJcium to egg-laying birds or their growing chicks are among the first to disappear as lakes acidify. As these food sources are reduced or eliminated due to acidification, bird habitat is reduced and reproductive rate of the birds is affected. The Common Loon is able to raise fewer chicks, or none at all, on acidic lakes where fish populations are reduced 37 and 5S). However, in some isolated cases, food supplies can be increased when competitive species are eliminated (e.g.. Common Goldeneye ducks can better exploit insects as food when competition from fish is eliminated). The collective influences of acidification are difficult to quantify on a specific area basis but for species that rely on a healthy aquatic ecosystem to breed, acidification remains a continuing threat in thousands of lakes across eastern North America 14). 

Wayland, M. McNicol, D.K. Status Report on Effects of Acid Precipitation on Common Loon Reproduction in Ontario The Ontario Loon Survey, Can. Wildlife Serv., Tech. Rept. Ser., No. 92, Ottawa, Ontario, 1990. 

In addition to the proteins mentioned above, there have been many reports of the induction of pathogenesis-related proteins (PRPs) in a number of plant species infected by viruses, viroids, bacteria or fungi (Van Loon, 1985). It has been shown that in cultured parsley cells, increased transcription of two PRP genes occurs within a few minutes of exposure to fungal elicitors (Somssich et al., 1986). Although several PRPs from tobacco have been purified and their cDNAs isolated (Hooft van Huijsduij-nen. Van Loon Bol, 1986), the exact action of these proteins remains unclear. 

Hooft van Huijsduijnen, R.A.M., Van Loon, L.C. Bol, J.F. (1986). cDNA cloning of six mRNAs induced by TMV infection of tobacco and a characterization of their translation products. EMBO Journal, 5, 2057-61. 

Van Loon, L.C. (1985). Pathogenesis-related proteins. Plant Molecular Biology, 4, 111-16. 

In a study conducted during the period 1998-2000 at North American sites, the relationship was studied between methyl mercury blood levels in common loons and behavioral parameters (Evers et al. 2008). Adult behaviors were divided into two... 

Burgess, N.M. and Meyer, M.W. (2008). Methyl mercury exposure associated with reduced productivity in common loons. Ecotoxicology 17, 83-92. 

Evers, D.C., Kaplan, J.D., Meyer, M.W et al. (1998). Geographic trend in mercury measured in common loon feathers and blood. Environmental Toxicology and Chemistry 17, 173-183. 

Evers, D.C., Savoy, L.J., and DeSorbo, C.R. et al. (2008). Adverse effects from environmental mercury loads on breeding common loons. Ecotoxicology 17, 69-81. 

Evers, D.C., Taylor, K.M, and Major, A. et al. (2003). Common loon eggs as indicators of methyhnercury availability in North America. Ecotoxicology 12, 69-82. 

Founmer, F., Karasow, W.H., and Kenow, K.P. et al. (2002). The oral availability and toxicokinetics of methyl mercury in common loon chicks. Comparative Biochemistry and Physiology, Part A 133, 703-714. 

Kenow, K.P., Grasman, K.A., and Hines, R.K. et al. (2007). Effects of methylmercury exposure on the immune function of common loons. Environmental Toxicology and Chemistry 26, 1460-1469. 

Scheuhammer, A.M., Basu, N., and Burgess, N.M. et al. (2008). Relationships among mercury, selenium, and neurochemical parameters in common loons and bald eagles. Ecotoxicology 17, 93-102. 

Smits JMM, Beurskens PT, Thijs L, van Loon AAWM, Zwanenburg B (1988) J Cryst Spectr Res 18 625... 

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