41 |
Lead belt progressives the struggle for social and environmental reform in Missouri mining communities /Faust, Robert Edward, January 2003 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves [254]-267). Also available on the Internet.
|
42 |
Lead belt progressives : the struggle for social and environmental reform in Missouri mining communities /Faust, Robert Edward, January 2003 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves [254]-267). Also available on the Internet.
|
43 |
Human lead metabolism : chronic exposure, bone lead and physiological models /Fleming, David E. B. January 1998 (has links)
Thesis ( Ph.D.) -- McMaster University, 1998. / Includes bibliographical references (leaves 237-246). Also available via World Wide Web.
|
44 |
Der Bleigehalt von Dentin und Zement an jugendlichen PraemolarenSchildknecht, Eugen, January 1976 (has links)
Thesis (Doctoral)--Universität Zürich, 1976.
|
45 |
Lead in blood ICP-MS studies of lead in plasma, blood and erythrocyte proteins /Bergdahl, Ingvar A. January 1997 (has links)
Thesis (doctoral)--Lund University, 1997. / Added t.p. with thesis statement inserted. Incorrect ISBN on t.p. verso.
|
46 |
Der Bleigehalt von Dentin und Zement an jugendlichen PraemolarenSchildknecht, Eugen, January 1976 (has links)
Thesis (Doctoral)--Universität Zürich, 1976.
|
47 |
The isotopic composition of lead in man and the environment in Finland isotope ratios of lead as indicators of pollutant source /Keinonen, Marja. January 1989 (has links)
Thesis (doctoral)--University of Helsinki, 1989. / Includes bibliographical references (p. 92-101).
|
48 |
Lead in blood ICP-MS studies of lead in plasma, blood and erythrocyte proteins /Bergdahl, Ingvar A. January 1997 (has links)
Thesis (doctoral)--Lund University, 1997. / Added t.p. with thesis statement inserted. Incorrect ISBN on t.p. verso.
|
49 |
The Voluntary Lead Shot Ingestion Rate of Mourning Doves (Zenaida Macroura) on a Disked FieldPlautz, Stephanie 01 January 2009 (has links)
Previous field studies of hunter-harvested mourning doves (Zenaida macroura) have reported lead (Pb) shot ingestion rates of 1 &ndash 6.5%. However, considerable uncertainty exists concerning mechanisms affecting pellet ingestion across different habitats. To reduce some of this uncertainty, an experiment was conducted to test the Pb shot ingestion rate of mourning doves on bare soil (typical of a managed dove field). Wild doves were trapped and held in captivity 5 &ndash 13 weeks prior to treatment. One week prior to treatment, a blood sample was taken from each bird before placement in open-bottomed treatment pens on a disked field. Each of 3 treatment groups of 80 birds was divided into 35 low density (1.5 million pellets/ha), 35 high density (29.5 million pellets/ha), and 10 control (0 pellets/ha) animals. Five positive control birds were gavage &ndash dosed with 2 Pb shot in trials 2 and 3. Pb shot and mixed seed were scattered uniformly on the loosely packed soil of their pens and birds were exposed for 4 days. Birds were x &ndash rayed post &ndash treatment on days 2 and 4 for the presence of Pb shot in the digestive system, and euthanized following the drawing of a blood sample on day 4. Overall, 2.9% of doves voluntarily ingested &ge 1 pellet. The shot ingestion rate for birds in the high density Pb treatment (4.9%) was not statistically different (P = 0.0977) from birds in the low density Pb treatment (1.0%). Pb concentrations in liver, kidneys, and blood reached maxima of 94.402, 346.033, and 13.883 ppm wet weight, respectively, and were statistically greater in birds that had ingested shot than in controls (P < 0.0083). Delta-aminolevulinic acid dehydratase (ALAD) activity decreased by an average of 92.2% post-treatment as compared to pre-treatment in birds that had ingested shot, while increasing by 1.1% in control birds. Heterophil:lymphocyte ratio increased by 28.2% in birds that ingested shot as compared to 1.5% in controls, while packed cell volume decreased by 7.6% in birds that ingested shot and 0.6% in controls. No significant difference in weight among groups was observed post-treatment (P = 0.3131). If managers deem the number of mourning doves at risk of Pb shot ingestion unacceptable, some options are to ban Pb shot either on entire management areas or only on high shot deposition areas like dove fields, or to disk fields after dove hunting to reduce Pb shot availability.
|
50 |
Self-diffusion of the Lead Ion in the Fused Lead Chloride SystemCureton, Wilbur Stanley 08 1900 (has links)
The specific goal of this investigation was the determination of the self-diffusion coefficient of the divalent lead ion in a fused lead chloride system at several temperatures and the determination of the activation energy for the diffusion process.
|
Page generated in 0.0542 seconds