Browsing Science (Faculty of) by Title
Now showing items 2011-2030 of 3026
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Origin of NMR Spectral Features in MCM-41 at Low Hydrations
(University of Waterloo, 2010-09-01)Although extensive literature exists on NMR of water in MCM-41, the origin of a number of NMR spectral features in this material had not been understood. Specifically, the OH proton resonance observed in the dry material ... -
The origin, transformation and deposition of sediments in Lake Bosomtwe/Bosumtwi (Ghana, West Africa)
(University of Waterloo, 2010-05-21)Recent drought over West Africa (1970s-present) has been a global concern, and the ability to predict the frequency and severity of future droughts is important to mitigate the devastating socio-economic effects of drought. ... -
Origins of Elastic Properties in Ordered Block Copolymer/Nanoparticle Composites
(American Chemical Society, 2004)We predict a diblock copolymer melt in the lamellar phase with added spherical nanoparticles that have an affinity for one block to have a lower tensile modulus than a pure diblock copolymer system. This weakening is due ... -
Origins of the failure of classical nucleation theory for nanocellular polymer foams
(RSC publishing, 2011-07-06)Relative nucleation rates for fluid bubbles of nanometre dimensions in polymer matrices are calculated using both classical nucleation theory and self-consistent field theory. An identical model is used for both calculations ... -
Orthogonal Adsorption Onto Nano-Graphene Oxide Using Different Intermolecular Forces for Multiplexed Delivery
(Wiley, 2013-05-31)Nano-graphene oxide can adsorb both doxorubicin and zwitterionic dioleoyl-sn-glycero-3-phosphocholine (DOPC) liposomes in an orthogonal and non-competing manner with high capacities based on different surface and intermolecular ... -
Overnight Corneal Swelling and Deswelling with Silicone Hydrogel Lenses
(University of Waterloo, 2019-12-13)Purpose: To compare central corneal swelling (CS) after eight hours of sleep in eyes wearing 12 different silicone hydrogel (SiHy) contact lenses (CLs) and to model between-subject variability in CS and deswelling. Methods: ... -
Oxidation characteristics, acid neutralization, secondary minerals, and trace elements associated with pyrrhotite oxidation in historical waste rock
(University of Waterloo, 2022-07-27)The Detour Lake Mine is an open pit, greenstone-hosted gold mine in Ontario, Canada. Mining produced waste-rock piles that were constructed from 1983 – 1999. Redevelopment and expansion of the open pit required the excavation ... -
Oxidation Level-Dependent Zwitterionic Liposome Adsorption and Rupture by Graphene-based Materials and Light-Induced Content Release
(Wiley, 2013-04-08)Liposomes may be stably adsorbed or ruptured on graphene-based materials, depending on the oxidation state of graphene. IR-induced liposome leakage is achieved, since graphene oxide does not induce liposome leakage spontaneously. -
Oxygen Reduction Reaction on Doped Lanthanum Chromate Perovskites
(University of Waterloo, 2024-01-19)The oxygen reduction reaction (ORR) plays a pivotal role in fuel cell technology and the generation of clean oxidizing agents. This reaction can proceed via two distinct pathways. The complete ORR pathway involves reducing ... -
PACAP Analogues with Potential Applications in Finfish Aquaculture
(University of Waterloo, 2023-09-25)Global aquaculture industry has significant losses each year due to disease outbreaks, parasitic, viral, and bacterial infections. Common methods to treat fish infections include antibiotics, but prolonged use can lead to ... -
Pain Management within the Long-term Care Setting: An Inquiry into Staff-perceived Contemporary Pain Management Practices
(University of Waterloo, 2014-05-06)Background: Chronic pain is a frequent and undertreated ailment within the long-term care community (Herman et al, 2009). The likelihood of experiencing pain increases with age and failure to treat this condition may ... -
Paleo-Ice Sheet and Deglacial History of the Southwestern Great Slave Lake Area
(University of Waterloo, 2022-01-28)The western Laurentide Ice Sheet (LIS) is known to have experienced complex ice-flow shifts during the last glaciation due to ice divide migration and increasing topographic influence during deglaciation. Several glacial ... -
Paleoglaciological dynamics in northern Manitoba and the subglacial bed mosaic
(University of Waterloo, 2013-06-24)During the last glacial maximum (LGM), some 20 ka ago, northern Manitoba was situated beneath 3 to 4.5 km of ice, on the outer fringe of a major ice spreading center of the Laurentide Ice Sheet. The region has also been ... -
Paleohydrology of the Wabasca River and relations with past flood regimes at the downstream Peace-Athabasca Delta
(University of Waterloo, 2022-08-22)The Peace-Athabasca Delta (PAD; northern Alberta) is internationally recognized for its ecological, historical, and cultural significance, yet controversy persists over the roles of hydroelectric regulation of Peace River ... -
Paleolimnological evidence of the effects of recent cultural eutrophication and climatic variability during the last 300 years in Lake Malawi, East Africa
(University of Waterloo, 2005)Lake Malawi is the second largest lake in Africa, supporting diverse populations of endemic cichlids and supplying essential water resources to Malawi, Mozambique and Tanzania. However, population growth, rapid deforestation ... -
Paleozoic evolution of western Marie Byrd Land, Antarctica
(Geological Society of America, 2015-09-01)We report geochemical data from (meta-) sedimentary and igneous rocks that crop out in the Ford Ranges of western Marie Byrd Land and discuss the evolution and reworking of the crust in this region during Paleozoic subduction ... -
Paleozoic transpressional tectonics in the Beishan orogenic collage, Northwest China: Evolution of the Hongliuhe suture zone
(University of Waterloo, 2016-01-21)The Beishan orogenic collage is a southern, central subset of the Central Asian Orogenic Belt, in Northwest China. It is an accretionary orogen that was active during the early Paleozoic, transitioning to convergent ... -
Paradigm Shift: Does River Metabolism Mask the Isotopic Signal of Nitrate Sources?
(University of Waterloo, 2017-05-19)Nitrate (NO₃⁻) is the most ubiquitous contaminant in surface and groundwaters in Canada. Synthetic fertilizer application and manure production in intensive agricultural areas contribute large quantities of NO₃⁻ to the ... -
Parallel Polyadenine Duplex Formation at Low pH Facilitates DNA Conjugation onto Gold Nanoparticles
(American Chemical Society, 2016-11-15)DNA-functionalized gold nanoparticles (AuNPs) have been extensively used in sensing, drug delivery, and materials science. A key step is to attach DNA to AuNPs, forming a stable and functional conjugate. Although the ... -
Parallel Polyadenine Duplex Formation at Low pH Facilitates DNA Conjugation onto Gold Nanoparticles
(University of Waterloo, 2017-04-20)DNA-functionalized gold nanoparticles (AuNPs) have been extensively used in sensing, drug delivery, and materials science. A key step is to attach DNA onto AuNPs forming a stable and functional conjugate. While the traditional ...