329,878 research outputs found
Pickering, James D., March 13, 1995 [Interview]
No full textProfessor of English and former Dean James D. Pickering was interviewed on March 13, 1995, by Michael Birkner about his career at Gettysburg College, including memories of colleagues, classes, and students.Langsam, Walter C.; Mason, Francis C.; Geyer, Richard B.; Lindeman, Ralph D.; Pickering, Anne; Bloom, Robert L.; Crapster, Basil L.; Glatfelter, Charles H.; Mara, Richard T.; Barnes, Robert D.; Sundermyer, William K.; Warthen, George S.; Wolfinger, Joseph K.; Baskerville, Edward J.; Hanson, Henry W.A.; Paul, Willard S.; Hartzell, Mildred H.; Zagars, Waldemar; Tilberg, Wilbur E.; Dunn, Seymour B.; Shainline, John W.; Storek, Martha; Jones, W. Ramsey; Frying, Robert H.; Rice, John S.; Ziegler, Earl E.; Schubart, W. Richard; Bream, Henry T.; Kramer, Frank H.; Bowen, Earl; Zinn, John B.; Held, C. Robert; Ahrens, Frederick C.; Hinrichs, Donald W.; Packard, Bruce L.; Glassick, Charles E.; Williams, Frank B.; Hoffman, F. Stanley; Potts, David B.; Taylor, Katherine K.Walter C. Langsam Years; Willard S. Paul Years; Carl Arnold Hanson Years; Charles E. Glassick Year
Impacts of hunter-gatherers on the vegetation history of the eastern vale of pickering, Yorkshire
Full text linkResearch is undertaken into the vegetation and human impact at three previously un-researched archaeological sites from the eastern Vale of Pickering. The vegetation history is reconstructed from the end of the Windermere Interstadial c. 13,000 (^14)C yr BP until the final Mesolithic c. 5100 (^14)C yr BP. The early Mesolithic human impact on the vegetation is assessed using a three stage statistical test to establish the internal variability in the data as well as background variations in pollen output. The results reveal that humans had a small but significant impact on the vegetation around two of the sites. Pollen preservation at the third site precluded analyses of the impacts of humans on the vegetation. The three-stage test used to test for human impact was quite successful but requires revision before any further use. On the whole the tests confirmed the findings of conventional human impact analyses. During the pre-Holocene fires occurred on a regular basis. These fires varied in location and intensity, suggesting that some of the fires were regional or large-scale, whilst others were small and very localized. A multi-causal explanation has been given for the fires. Later, during the early Mesolithic, human groups are thought to have burnt the reedswamp at the lake edges as part of an economic strategy. Star Carr is the only site that demonstrates clearance of significant areas of woodland. During the later Mesolithic the hunter-gatherers have a greater impact on the vegetation within the Vale. This is attributed to the need for more resources as a result of vegetation change and increased population levels. Unlike their counter-parts from the North York Moors, the occupants of the lowland Vale of Pickering cause no long-term change to their environment
Pickering, Anne S.
No full text"Swamp Chestnut Oak, Quercus michauxii" In memory of Anne S. Pickering, R.N. Head Nurse, Gettysburg College Infirmary 1954 - 1958 Beloved mentor and friend Given by Kevin B Thomas '58 Robert B. Wolf '59Gift in MemoryTree; Plaque1958; 195
Talks and posters - Jade S Pickering
No full textA dumping ground for all posters/talks by Jade S Pickerin
Talks and posters - Jade S Pickering
No full textA dumping ground for all posters/talks by Jade S Pickerin
Talks and posters - Jade S Pickering
No full textA dumping ground for all posters/talks by Jade S Pickerin
An investigation of the drying process in pickering foams
No full textPickering foams, aqueous foams stabilized by solid particles, can be used as a precursor to fabricate solid porous polymers, ceramics, and composite materials. The fabrication process usually comprises of two subsequent steps of drying and solidification (e.g. sintering) after foam is prepared. Drying (or aging) in aqueous Pickering foams is a complex transport process which involves evaporation and drainage (induced by gravity) of the excess liquid along with deformation of the foam and possible formation of cracks caused by capillary-induced stresses. Crack formation is therefore depended on the drying conditions and the mechanical properties of sample. A comprehensive understanding of the drying process can provide us with predictive tools to select efficient process parameters (e.g. required drying time prior to sintering) as well as providing input prameters for developing numerical models. In this thesis, we first provide experimental data (end of drying time, average moisture content, and effective moisture diffusivity) on drying of Pickering foams stabilized by polymer particles under controlled conditions (i.e. relative humidity and temperature). Drying curves are presented for samples of various initial thicknesses and shapes on substrates of different hydrophobicity and temperatures. Moisture transport is represented via calculating the effective moisture diffusivity coefficients using method of slope. Also, we investigate drying for a bi-component Pickering foam prepared using Multi-walled Carbon Nanotubes (MWCNTs) and polymer particles. We show that the effective moisture diffusivity increases as the average moisture content decreases for all trials and that all data can be collapsed on a master curve. Also, effective moisture diffusivity increased as initial sample thickness as well as substrate temperature increase. On the other hand, effective moisture diffusivity does not depend strongly on the sample shape and MWCNTs concentration. In next part, we explore the effect of initial sample thickness and shape, substrate temperature and wettability, as well as MWCNTs concentration on the crack formations in the samples. We demonstrate that substrate wettability, initial sample thickness, and MWCNTs concentration have a strong influence on the formation and propagation of cracks. We found that decreasing the wettability of the substrate reduces crack formation. Also, increasing the initial sample thickness reduces crack formation. On the contrary, increasing the MWCNTs concentration increases crack formation for all types of substrates. We demonstrate that substrate temperature and sample shape do not seem to influence crack formation but these parameters influence the crack patterns. Such information can be beneficial in using these foams as a precursor to fabricate porous composite porous materials.Ph.D.Includes bibliographical referencesby Omer S. Alabidalkree
Edificio PARKROYAL on Pickering/WOHA
No full text
Post edición de imagen con autor principal: PARKROYAL on Pickering / WOHA. (s/f). ArchDaily Perú. Recuperado el 21 de mayo de 2023, de https://www.archdaily.pe/pe/02-255264/parkroyal-on-pickering-woha/51756334b3fc4b748700014c-parkroyal-on-pickering-woha-2-photo
Editado sobre imagen original. 1 Riachuelos y caidas de agua. 2 Selva vertical. 3 Sistema autosuficiente de energía solar.</p
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