Wisconsin study

Another area of concern is the residual life of a pesticide once it is brought back to the hive. Microencapsulated methyl parathion was at one time believed to represent a special hazard because of its controlled release feature. Thus methyl parathion from MMP was reported to persist in stored pollen for up to 17 months.( ) Unfortunately, little is known about the persistence of insecticides in honey bee combs etnd the subsequent effects of their residues on the honey bees. Carbaryl has been shown to persist for at least eight months in colonies ( ) euid permethrln for at least seven months.O) Recently, USDA researchers at the University of Wisconsin studied samples from two bee kills that apparently Involved methomyl and MMP applied to sweet com. Samples were collected to determine, among others, whether methomyl persisted in combs. Analysis demonstrated that eight months after the insecticide application, residues of 0.03 ppm of methyl parathion and 0.03 ppm of methomyl ( 5) remained, even though the latter is considered to be a short-residual pesticide. 

Researchers examined data that was particularly longterm in nature a Wisconsin study that followed more than 10,000 high school students from their graduation in 1957 until the present. The respondents health, socioeconomic status and marital status were factored into the data. 

E. B. Fred, I. L. Baldwin, and E. McCoy, Root Nodule Bacteria andEeguminous Plants, Studies in Science No. 5, University of Wisconsin Press, Madison, Wis., 1932. 

Drexler, K. E. (1994). Molecular Manufacturing for the Environment. Preprints of Papers Presented at the 208th American Chemical Society National Meeting, August 21-25,1994, Washington, DC, 263-265. Center for Great Lakes Studies, University of Wisconsin-Milwaukee, Milwaukee, WI Division of Environmental Chemistry, American Chemical Society. 

Figure 4-12. Stopped-flow study of the pyridine-catalyzed hydrolysis of acetic anhydride, showing the formation and decay of the acetylpyridinium ion intermediate. Initial concentrations were 0.087 M pyridine, 2.1 x im M acetic anhydride the pH was 5.5 ionic strength, 1.0 M temperature, 25 C. Five hundred data points tabsorbance at 280 nm) were measured in I s. The smooth curve is a ht to Eq. (3-27). Source Data of D. Khossravi and S.-F. Hsu, University of Wisconsin.

This sensitivity to vegetation also appears in the data from our study of modem plants and animals. More than a thousand samples spanning a wide range of species of both plants and animals were selected from a five-county area in northeastern Wisconsin. While herbivores have significantly lower... 

Groundwater has also been surveyed for methyl parathion. In a study of well water in selected California communities, methyl parathion was not detected (detection limit of 5 ppb) in the 54 wells sampled (Maddy et al. 1982), even though the insecticide had been used in the areas studied for over 15 years. An analysis of 358 wells in Wisconsin produced the same negative results (Krill and Sonzogni 1986). In a sampling of California well water for pesticide residues, no methyl parathion was detected in any of the well water samples (California EPA 1995). In a study to determine the residue levels of pesticides in shallow groundwater of the United States, water samples from 1,012 wells and 22 springs were analyzed. Methyl parathion was not detected in any of the water samples (Kolpin et al. 1998). In a study of water from near-surface aquifers in the Midwest, methyl parathion was not detected in any of the water samples from 94 wells that were analyzed for pesticide levels (Kolpin et al. 1995). 

Hancock received his B.A from Harvard and his Ph.D. from the University of Wisconsin in 1968. After a National Institutes of Health Postdoctoral Fellowship at Yale, he worked as assistant and associate professor in the chemistry department of the University of California—Davis from 1968 to 1979, where he taught graduate and undergraduate chemistry and did research in organic and organometallic photochemistry. His work opened a new field of study in organoboron photochemistry. 

Ralph, J. Reactions of lignin model quinone methides and NMR studies of lignins. Ph. D. thesis, University of Wisconsin—Madison, University Microfilms DA 82-26987.1982. 

My approach to this issue has been to use the molecular bands of CH, CN and now NH to study the star-to-star abundance variations of C and of N. Since these bands are strong enough to be observed at moderate resolution, I can use the multiplexing capability of the Low Resolution Imaging Spectrograph at Keck (Oke et al 1995) to build up large samples. This effort is being undertaken jointly with Michael Briley of the University of Wisconsin at Oshkosh and with Peter Stetson of the National Research Council, Victoria, Canada. 

M. J. Kontny, in Water Vapor Sorption Studies on Solid Surfaces, Ph.D. Thesis, University of Wisconsin—Madison, 1985. 

Deciphering the cause(s) of the Late Wisconsin dust interval will be the subject of many future studies, but the interval serves as a useful time marker at present. Koerner and Fisher [34] have used elevated microparticle concentrations in the Devon Island ice core as an indicator of Wisconsin-aged ice. Similarly high continental dust concentrations are expected in the recently recovered cores from the East Antarctic plateau. 

A desire for further education led Ihde to return to Wisconsin for graduate study in 1938. He earned his M.S. in 1939 and his Ph.D. in 1941 for work in food chemistry under Professor H. A. Schuette. After a year on the faculty at Butler University, he returned to Madison once again in 1942, this time to stay, as a member of the Wisconsin chemistry faculty. 

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