1,721,418 research outputs found
The Neotrichia caxima Group (Trichoptera: Hydroptilidae) in the southeastern United States
No full textHarris, Steven C., Rasmussen, Andrew K. (2010): The Neotrichia caxima Group (Trichoptera: Hydroptilidae) in the southeastern United States. Zootaxa 2608: 25-44, DOI: 10.5281/zenodo.19773
Application of surface science to the study of the corrosion of PWR primary circuit materials
No full textThis thesis describes a study of the corrosion and oxidation of PWR primary circuit materials using surface sensitive spectroscopic techniques. The aims of the project and related background material are presented in Chapter 1. In Chapter 2 the fundamental principles of the methods used are described and Chapter 3 describes the instruments and their basic operation. An XPS study of a number of mixed oxides of known composition is described in Chapter 4 and the information obtained is related to XPS measurements made on the surface of iron and nickel based alloys oxidised under controlled conditions. A SIMS study on these mixed transition metal oxides is described in Chapter 5. In Chapters 6 and 7 respectively the gaseous oxidation of stainless steel 304L and Inconel-690 is examined. Both alloys were oxidised at 600K in air with the composition of the oxide films formed studied by a range of surface spectroscopic methods. Further experimental work was performed on Inconel-690 to examine the effects of surface pretreatment and the effects of low oxygen partial pressures on the formation of oxide films at 600K. The incorporation of the radionucleide, cobalt-60, into the oxide films formed on structural components of a PWR, result in the build up of radiation fields. The work described in Chapter 8 examines a method of pretreating the surface of the alloy stainless steel 304L in order to reduce the level of cobalt adsorbed into the oxide film formed under simulated primary coolant conditions. In contrast, the work described in Chapters 9 and 10 examines treatments which have been developed to release cobalt adsorbed in existing oxide layers under reactor conditions.</p
New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize
No full textHarris, Steven C., Oliver S. Flint, Jr. (2016): New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize. Insecta Mundi 2016 (499): 1-22, DOI: 10.5281/zenodo.517072
Larva of Nothotrichia shasta Harris & Armitage (Trichoptera: Hydroptilidae) from California, USA, with its phylogenetic and taxonomic implications
No full textParys, Katherine A., Harris, Steven C. (2013): Larva of Nothotrichia shasta Harris & Armitage (Trichoptera: Hydroptilidae) from California, USA, with its phylogenetic and taxonomic implications. Zootaxa 3620 (4): 589-595, DOI: 10.11646/zootaxa.3620.4.
The Trichoptera of Panama XIV. New species of microcaddisflies (Trichoptera: Hydroptilidae) from Omar Torrijos Herrera National Park
No full textArmitage, Brian J., Harris, Steven C. (2020): The Trichoptera of Panama XIV. New species of microcaddisflies (Trichoptera: Hydroptilidae) from Omar Torrijos Herrera National Park. Insecta Mundi 763: 1-19, DOI: 10.5281/zenodo.377912
Two new species of Leptoceridae (Trichoptera) from Florida, USA
No full textRasmussen, Andrew K., Harris, Steven C., Denson, Dana R. (2008): Two new species of Leptoceridae (Trichoptera) from Florida, USA. Zootaxa 1779: 55-64, DOI: 10.5281/zenodo.18227
Figure 3. Neotrichia contrerasi, n in New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize
No full textFigure 3. Neotrichia contrerasi, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view; D. Phallus, ventral.Published as part of Harris, Steven C. & Oliver S. Flint, Jr., 2016, New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize, pp. 1-22 in Insecta Mundi 2016 (499) on page 11, DOI: 10.5281/zenodo.517072
Figure 5. Neotrichia palitla, n in New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize
No full textFigure 5. Neotrichia palitla, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view; D. Phallus, dorsal.Published as part of Harris, Steven C. & Oliver S. Flint, Jr., 2016, New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize, pp. 1-22 in Insecta Mundi 2016 (499) on page 13, DOI: 10.5281/zenodo.517072
Figure 7. Neotrichia pinnacles, n in New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize
No full textFigure 7. Neotrichia pinnacles, n. sp. Male genitalia. A. Lateral view; B. Ventral view; C. Dorsal view; D. Phallus, dorsal.Published as part of Harris, Steven C. & Oliver S. Flint, Jr., 2016, New species of microcaddisflies (Trichoptera: Hydroptilidae) from the western United States, Canada, Mexico and Belize, pp. 1-22 in Insecta Mundi 2016 (499) on page 15, DOI: 10.5281/zenodo.517072
FIGURE 6. Neotrichia riegeli, female genitalia. A in The Neotrichia caxima Group (Trichoptera: Hydroptilidae) in the southeastern United States
No full textFIGURE 6. Neotrichia riegeli, female genitalia. A. Abdominal segment VIII, ventral view, B. Bursa copulatrix, ventral view.Published as part of Harris, Steven C. & Rasmussen, Andrew K., 2010, The Neotrichia caxima Group (Trichoptera: Hydroptilidae) in the southeastern United States, pp. 25-44 in Zootaxa 2608 on page 32, DOI: 10.5281/zenodo.19773
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