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- Title
- With the best of intentions: A critical discourse analysis of physical education curriculum materials
- Author(s)
- Tony Rossi (author), Richard Tinning (author), Louise McCuaig (author), Karen Sirna (author), Lisa Hunter (author)
- Date
- 2009
- Abstract
- Much of physical education curriculum in the developed world and specifically in Australia tends to be guided in principle by syllabus documents that represent, in varying degrees, some form of government education priorities. Through the use of critical discourse analysis we analyze one such syllabus example (an official syllabus document of one of the Australian States) to explore the relationships between the emancipatory/social justice expectations presented in the rubric of and introduction to the official syllabus document, and the language details of learning outcomes that indicate how the expectations might be satisfied. Given the complexity and multilevel pathways of message systems/ideologies we question the efficacy of such documents oriented around social justice principles to genuinely deliver more radical agendas which promote social change and encourage a preparedness to engage in social action leading to a betterment of society.
- Department
- Sport Science
- Title
- The soccer skort: All with the female player in mind
- Author(s)
- Kelly MacDonald (author), Dominique Falls (author)
- Date
- 2009
- Department
- Sport Science
- Title
- The November 2002 eruption of Piton de la Fournaise, Réunion: Tracking the pre-eruptive thermal evolution of magma using melt inclusions
- Author(s)
- Nathalie Vigouroux (author), A. E. Williams-Jones, Paul Wallace & Thomas Staudacher (author)
- Date
- 2009
- Abstract
- The November 2002 eruption of Piton de la Fournaise in the Indian Ocean was typical of the activity of the volcano from 1999 to 2006 in terms of duration and volume of magma ejected. The first magma erupted was a basaltic liquid with a small proportion of olivine phenocrysts (Fo81) that contain small numbers of melt inclusions. In subsequent flows, olivine crystals were more abundant and richer in Mg (Fo83–84). These crystals contain numerous melt and fluid inclusions, healed fractures, and dislocation features such as kink bands. The major element composition of melt inclusions in this later olivine (Fo83–84) is out of equilibrium with that of its host as a result of extensive post-entrapment crystallization and Fe2+ loss by diffusion during cooling. Melt inclusions in Fo81 olivine are also chemically out of equilibrium with their hosts but to a lesser degree. Using olivine–melt geothermometry, we determined that melt inclusions in Fo81 olivine were trapped at lower temperature (1,182 ± 1°C) than inclusions in Fo83–84 olivine (1,199–1,227°C). This methodology was also used to estimate eruption temperatures. The November 2002 melt inclusion compositions suggest that they were at temperatures between 1,070°C and 1,133°C immediately before eruption and quenching. This relatively wide temperature range may reflect the fact that most of the melt inclusions were from olivine in lava samples and therefore likely underwent minor but variable amounts of post-eruptive crystallization and Fe2+ loss by diffusion due to their relatively slow cooling on the surface. In contrast, melt inclusions in tephra samples from past major eruptions yielded a narrower range of higher eruption temperatures (1,163–1,181°C). The melt inclusion data presented here and in earlier publications are consistent with a model of magma recharge from depth during major eruptions, followed by storage, cooling, and crystallization at shallow levels prior to expulsion during events similar in magnitude to the relatively small November 2002 eruption.
- Department
- Earth and Environmental Sciences
- Title
- Identification of freshwater Phycodnaviridae and their potential phytoplankton hosts, using DNA pol sequence fragments and a genetic-distance analysis
- Author(s)
- Jessica L. Clasen (author), Curtis A. Suttle (author)
- Date
- 2009
- Abstract
- Viruses that infect phytoplankton are an important component of aquatic ecosystems, yet in lakes they remain largely unstudied. In order to investigate viruses (Phycodnaviridae) infecting eukaryotic phytoplankton in lakes and to estimate the number of potential host species, samples were collected from four lakes at the Experimental Lakes Area in Ontario, Canada, during the ice-free period (mid-May to mid-October) of 2004. From each lake, Phycodnaviridae DNA polymerase (pol) gene fragments were amplified using algal-virus-specific primers and separated by denaturing gradient gel electrophoresis; 20 bands were extracted from the gels and sequenced. Phylogenetic analysis indicated that freshwater environmental phycodnavirus sequences belong to distinct phylogenetic groups. An analysis of the genetic distances "within" and "between" monophyletic groups of phycodnavirus isolates indicated that DNA pol sequences that differed by more than 7% at the inferred amino acid level were from viruses that infect different host species. Application of this threshold to phylogenies of environmental sequences indicated that the DNA pol sequences from these lakes came from viruses that infect at least nine different phytoplankton species. A multivariate statistical analysis suggested that potential freshwater hosts included Mallomonas sp., Monoraphidium sp., and Cyclotella sp. This approach should help to unravel the relationships between viruses in the environment and the phytoplankton hosts they infect.
- Department
- Biology
- Title
- Response-selection conflict contributes to inhibition of return
- Author(s)
- David J. Prime (author), Pierre Jolicœur (author)
- Date
- 2009
- Abstract
- Here we examined the relationship between inhibition of return (IOR) and response-selection conflict. In two go/no-go and spatial-cueing experiments, we measured the amplitude of the fronto-central N2 event-related potential component to estimate the degree of response-selection conflict for validly cued and invalidly cued targets. When the probability of a go target was high (Experiment 1), both the amplitude of the N2 elicited on no-go trials and the number of false alarm errors were greater on invalid-cue than on valid-cue trials. When the probability of a go target was low (Experiment 2), neither of these effects was observed and the magnitude of the IOR effect was greatly reduced. These results show that a relative response bias toward responding on invalid-cue trials contributes to the IOR reaction time effect when the required response is prepotent.
- Subject(s)
- Brain, Occipital lobes, Visual cortex, Magnetic resonance imaging, Cognitive neuroscience
- Department
- Psychology, Humanities and Social Sciences
- Title
- Two perspectives on the material and discursive construction of British Columbian forests
- Author(s)
- Jaime Yard (author)
- Date
- 2009
- Abstract
- This paper considers how forests as hybrid natural-cultural “things” enter public debates in the province of British Columbia through the juxtaposition of two examples: first, the Canada-U.S. softwood lumber dispute, and second, the felling of a single tree in Haida Gwaii as depicted in John Vaillant’s 2005 nonfiction bestseller, The Golden Spruce. The processes through which people come to know, value and represent nature in each of these examples are placed in the foreground. I argue that the framing of “the forest” as an external object for trade or conservation limits public debate by prematurely accepting the modern precept of natural and cultural separation. This argument calls for a move away from the lamentations/self-congratulatory awe of “modern” subjects faced with an external, debilitated, instrumentalized “nature,” and toward political engagement with multiple “natures,” human and non, that are not only inseparable but coconstitutive.
- Department
- Anthropology
- Title
- Female perpetrators of intimate partner violence: within-group heterogeneity, related psychopathology, and a review of current treatment with recommendations for the future
- Author(s)
- Julie Goldenson (author), Alicia Spidel (author), Caroline Greaves (author), Donald Dutton (author)
- Date
- 2009
- Abstract
- Female perpetrators of intimate partner violence (IPV) are now beginning to receive some scholarly attention both in Canada and the United States, particularly with zero tolerance policies and the increasing number of female arrestees. This article reviews research on the relative prevalence of IPV (comparing males and females) and the context and motivation for perpetration and female perpetrators' general psychopathology (e.g., their attachment issues, trauma experiences, and personality organization). We not only examine intergroup comparisons between women and men, but also highlight some of the intragroup heterogeneity within female perpetrators of the IPV population. The aim of this review is also to describe some of current treatment approaches and provide recommendations for the future.
- Subject(s)
- Female offenders, Female offenders--Psychology, Violence in women, Abused men, Husband abuse, Intimate partner violence
- Department
- Criminology, Humanities and Social Sciences
- Title
- The interval between Ins2 and Ascl2 is dispensable for imprinting centre function in the murine Beckwith–Wiedemann region
- Author(s)
- Louis Lefebvre (author), Lynn Mar (author), Aaron Bogutz (author), Rosemary Oh-McGinnis (author), Mohammad A. Mandegar (author), Jana Paderova (author), Marina Gertsenstein (author), Jeremy A. Squire (author), Andras Nagy (author)
- Date
- 2009
- Abstract
- Imprinted genes are commonly clustered in domains across the mammalian genome, suggesting a degree of coregulation via long-range coordination of their monoallelic transcription. The distal end of mouse chromosome 7 contains two clusters of imprinted genes within a ~1 Mb domain. This region is conserved on human 11q15.5 where it is implicated in the Beckwith-Wiedemann syndrome. In both species, imprinted regulation requires two critical cis-acting imprinting centres, carrying different germline epigenetic marks and mediating imprinted expression in the proximal and distal sub-domains. The clusters are separated by a region containing the gene for tyrosine hydroxylase (Th) as well as a high density of short repeats and retrotransposons in the mouse. We have used the Cre-loxP recombination system in vivo to engineer an interstitial deletion of this ~280-kb intervening region previously proposed to participate in the imprinting mechanism or to act as a boundary between the two sub-domains. The deletion allele, Del7AI, is silent with respect to epigenetic marking at the two flanking imprinting centres. Reciprocal inheritance of Del7AI demonstrates that the deleted region, which represents more than a quarter of the previously defined imprinted domain, is associated with intrauterine growth restriction in maternal heterozygotes. In homozygotes, the deficiency behaves as a Th null allele and can be rescued pharmacologically by bypassing the metabolic requirement for TH in utero. Our results show that the deleted interval is not required for normal imprinting on distal Chr 7 and uncover a new imprinted growth phenotype.
- Department
- Biology
- Title
- Fist of the spider woman: tales of fear and queer desire
- Author(s)
- Amber Dawn (editor)
- Date
- 2009
- Abstract
-
Short-listed, Lambda Literary Award 2010
Traditional horror has often portrayed female characters in direct relation to their sexual role according to men, such as the lascivious victim or innocent heroine; even vampy, powerful female villains, such as the classic noir "spider women," use their sexual prowess to seduce and overwhelm married men. "Fist of the Spider Woman" is a revelatory anthology of horror stories by queer and transgressive women and others that disrupts reality as queer women know it, instilling both fear and arousal while turning traditional horror iconography on its head. In this collection, horror (including gothic, noir, and speculative writing) is defined as that which both titillates and terrorizes, forcing readers to confront who they are. Kristyn Dunnion's "Homeland" reveals the horrors that lurk in your average night at a lesbian bar; Elizabeth Bachinsky's "Postulation on the Violent Works of the Marquis de Sade" is a response to Sade from a feminist (yet kinky) perspective; and Amber Dawn's "Here Lies the Last Lesbian Rental" is a paranormal fantasia about urban gentrification, set in a house rented by lesbians on the eve that it is sold to new owners. Subversive, witty, sexy--and scary --"Fist of the Spider Woman" poses two questions: "What do queer women fear the most?" and "What do queer women desire the most?" Amber Dawn is a writer, performance artist, and radical sex/gender activist who co-edited "With a Rough Tongue: Femmes Write Porn".
From publisher description.
- Subject(s)
- Horror tales, Canadian (English)--21st century, Erotic stories, Canadian (English)--21st century, Short stories, Canadian (English)--21st century, Canadian fiction (English)--21st century, Canadian fiction (English)--Women authors, Horror tales, Canadian--21st century, Erotic stories, Canadian--21st century, Short stories, Canadian--21st century, Canadian fiction--21st century, Canadian fiction--Women authors
- Department
- Creative Writing, Language, Literature and Performing Arts
- Title
- A lesson of success in microfinance in Africa: The experience of ACSI in Ethiopia
- Author(s)
- Esayas B. Geleta (author)
- Date
- 2009
- Abstract
- The conference paper presented at the First European International Conference on Microfinance, Brussels, July 2-4. ACSI (Amhara Credit and Savings Institution) is one of the largest MFIs that are found in the world. ACSI won a number of global microfinance awards and is emerging as the most efficient and sustainable MFI in Africa. This paper critically assesses the specific qualities of ACSI that enabled it to ration micro-loans to about a million of People in Amhara region, one of the most inaccessible and harsh environmental zones of Ethiopia, one of the poorest country in sub-Saharan Africa. It critically examines how the involvement of state and community members influences microfinance outcomes. The paper draws on an ethnographic research undertaken on ACSI’s credit clients in rural agricultural and urban communities of Semen Showa Zone1, Amhara region, Ethiopia.
- Department
- Sociology
- Title
- Social environment and feeding state influence movement decisions in a web‐building spider
- Author(s)
- Maxence Salomon (author)
- Date
- 2009
- Abstract
- It is well recognized that feeding rate has a major influence on the amount of movement between microhabitats for many animals. However, the role of other extrinsic and intrinsic factors, and particularly how these factors may interact, is not well understood. This three-part study examines the movement decisions of a web-building spider, Latrodectus hesperus, by assessing microhabitat tenacity in established spiders and by testing how the presence of conspecific neighbours and the combined influence of individual feeding state (determined by prior feeding experience) and neighbour presence influence microhabitat residence time in unestablished spiders. The results show that naturally established spiders did not leave their microhabitats readily, emphasizing the importance of choosing a profitable location. Unestablished spiders stayed longer in microhabitats occupied by conspecifics than in unoccupied ones, and there was practically no cannibalism even though neighbours shared webs. Furthermore, feeding state and neighbour presence showed an interactive effect on microhabitat residence time. When spiders were housed alone, microhabitat residence time increased with feeding state. However, in the presence of conspecifics, spiders had a low propensity to move, regardless of feeding state. Together, these results demonstrate the combined importance of grouping dynamics and feeding state in shaping movement decisions. [ABSTRACT FROM AUTHOR]
- Department
- Biology
- Title
- Parkinson–dementia complex and development of a new stable isotope dilution assay for BMAA detection in tissue
- Author(s)
- Laura R. Snyder (author), Reyniel Cruz-Aguado (author), Martin Sadilek (author), Douglas Galasko (author), Christopher A. Shaw (author), Thomas J. Montine (author)
- Date
- 2009
- Abstract
- β-Methylamino- l-alanine (BMAA) has been proposed as a global contributor to neurodegenerative diseases, including Parkinson–dementia complex (PDC) of Guam and Alzheimer's disease (AD). The literature on the effects of BMAA is conflicting with some but not all in vitro data supporting a neurotoxic action, and experimental animal data failing to replicate the pattern of neurodegeneration of these human diseases, even at very high exposures. Recently, BMAA has been reported in human brain from individuals afflicted with PDC or AD. Some of the BMAA in human tissue reportedly is freely extractable (free) while some is protein-associated and liberated by techniques that hydrolyze the peptide bond. The latter is especially intriguing since BMAA is a non-proteinogenic amino acid that has no known tRNA. We attempted to replicate these findings with techniques similar to those used by others; despite more than adequate sensitivity, we were unable to detect free BMAA. Recently, using a novel stable isotope dilution assay, we again were unable to detect free or protein-associated BMAA in human cerebrum. Here we review the development of our new assay for tissue detection of BMAA and show that we are able to detect free BMAA in liver but not cerebrum, nor do we detect any protein-associated BMAA in mice fed this amino acid. These studies demonstrate the importance of a sensitive and specific assay for tissue BMAA and seriously challenge the proposal that BMAA is accumulating in human brain.
- Department
- Biology
- Title
- Relationship between circulating levels of IFN‐γ, IL‐10, CXCL9 and CCL2 in pulmonary and extrapulmonary tuberculosis is dependent on disease severity
- Author(s)
- Zahra Hasan (author), Bushra Jamil (author), Javaid A. Khan (author), Rouknuddin Ali (author), Muhammad A. Khan (author), Nosheen Nasir (author), M. S. Yusuf (author), Sarwat Jamil (author), Muhammad Irfan (author), Rabia Hussain (author)
- Date
- 2009
- Abstract
- Protection against Mycobacterium tuberculosis infection is dependent on T cell and macrophage activation regulated by cytokines. Cytokines and chemokines produced at disease sites may be released into circulation. Data available on circulating cytokines in tuberculosis (TB) is mostly on pulmonary TB (PTB) with limited information on extrapulmonary disease (EPul-TB). We measured interferon-gamma (IFN-γ), interkeukin-10 (IL-10), CXCL9 and CCL2 in sera of patients ( n = 80) including; PTB ( n = 42), EPul-TB ( n = 38) and BCG vaccinated healthy endemic controls (EC, n = 42). EPul-TB patients comprised those with less severe (LNTB) or severe (SevTB) disease. Serum IFN-γ, IL-10 and CXCL9 levels were significantly greater while CCL2 was reduced in TB patients as compared with EC. IFN-γ was significantly greater in PTB as compared with LNTB ( P = 0.002) and SevTB ( P = 0.029). CXCL9 was greater in PTB as compared with LNTB ( P = 0.009). In contrast, CCL2 levels were reduced in PTB as compared with LNTB ( P = 0.021) and SevTB ( P = 0.024). A Spearman’s rank correlation analysis determined a positive association between IFN-γ and IL-10 (rho = 0.473, P = 0.002) and IFN-γ and CXCL9 (rho = 0.403, P = 0.008) in the PTB group. However, in SevTB, only IFN-γ and CXCL9 were positively associated (rho = 0.529, P = 0.016). Systemic levels of cytokines are reflective of local responses at disease sites. Therefore, our data suggests that in PTB increased IFN-γ and CXCL9 balanced by IL-10 may result in a more effective cell mediated response in the host. However, elevated inflammatory chemokines CXCL9 and CCL2 in severe EPul-TB without concomitant down modulatory cytokines may exacerbate disease related pathology and hamper restriction of M. tuberculosis infection. [ABSTRACT FROM AUTHOR]
- Department
- Biology
- Title
- The Iraqi expatriates' experience of the North American media coverage of Iraq war
- Author(s)
- Hajera Rostam (author), Beth E. Haverkamp (author)
- Date
- 2009
- Abstract
- The extensive North American (NA) media coverage of the recent conflict in Iraq invites the question of how adult Iraqi immigrants have experienced such coverage. This qualitative investigation, involving Iraqi immigrants in Vancouver, Canada, used an interpretive description method (Thorne et al., Int J Qual Methods 3(1):1–21, 2004) to analyze ten participant interviews using Miles and Huberman’s (1994) analytic framework. Eleven themes emerged that identified the participants’ perceptions of the NA media war coverage, and the initial and ongoing impact of being exposed to it. Implications for counseling are considered.
- Subject(s)
- Iraq War, 2003-2011--Press coverage--North America, Iraq War, 2003-2011--Mass media and the war, Foreign news--North America--Psychological aspects, Iraqis--North America, Cross-cultural counseling
- Department
- Psychology, Humanities and Social Sciences
- Title
- An investigation of differential reinforcement of alternative behavior without extinction
- Author(s)
- Elizabeth S. Athens (author), Timothy R. Vollmer (author)
- Date
- 2009
- Abstract
- We manipulated relative reinforcement for problem behavior and appropriate behavior using differential reinforcement of alternative behavior (DRA) without an extinction component. Seven children with developmental disabilities participated. We manipulated duration (Experiment 1), quality (Experiment 2), delay (Experiment 3), or a combination of each (Experiment 4), such that reinforcement favored appropriate behavior rather than problem behavior even though problem behavior still produced reinforcement. Results of Experiments 1 to 3 showed that behavior was often sensitive to manipulations of duration, quality, and delay in isolation, but the largest and most consistent behavior change was observed when several dimensions of reinforcement were combined to favor appropriate behavior (Experiment 4). Results suggest strategies for reducing problem behavior and increasing appropriate behavior without extinction.
- Subject(s)
- Behavioral assessment of children, Problem children--Behavior modification, Developmentally disabled children--Behavior modification, Behavior therapy for children, Reinforcement (Psychology)
- Department
- Disability and Community Studies, Child, Family and Community Studies
- Title
- Orexin A/Hypocretin-1 selectively promotes motivation for positive reinforcers
- Author(s)
- Stephanie L. Borgland (author), Shao-Ju Chang (author), M. Scott Bowers (author), Jennifer L. Thompson (author), Nicole Vittoz (author), Stan B. Floresco (author), Jonathan Chou (author), Billy T. Chen (author), Antonello Bonci (author)
- Date
- 2009
- Abstract
- Orexin A/hypocretin-1 (oxA/hcrt-1) is known to be a modulator of dopamine-dependent neuronal activity and behaviors. However, the role of this system in driving motivated behaviors remains poorly understood. Here, we show that orexin/hypocretin receptor-1 (ox/hcrt-1R) signaling is important for motivation for highly salient, positive reinforcement. Blockade of ox/hcrt-1R selectively reduced work to self-administer cocaine or high fat food pellets. Moreover, oxA/hcrt-1 strengthened presynaptic glutamatergic inputs to the ventral tegmental area (VTA) only in cocaine or high fat self-administering rats. Finally, oxA/hcrt-1-mediated excitatory synaptic transmission onto VTA neurons was not potentiated following an arousing, aversive stimulus, suggesting that oxA/hcrt-1-mediated glutamatergic synaptic transmission was potentiated selectively with highly salient positive reinforcers. These experiments provide evidence for a selective role of oxA/hcrt-1 signaling in motivation for highly salient reinforcers and may represent a unique opportunity to design novel therapies that selectively reduce excessive drive to consume positive reinforcers of high salience.
- Subject(s)
- Orexins, Dopamine--Receptors, Neural receptors, Reinforcement (Psychology), Neurosciences
- Department
- Psychology, Humanities and Social Sciences
- Title
- Curved walking in individuals with stroke
- Author(s)
- Karine Duval (author), Tania Lam (author)
- Date
- 2009
- Abstract
-
Presented at the International Society of Posture and Gait Research Congress, Bologna, Italy (June 21-25, 2009).
Despite the significance of turning during walking in everyday life there has been very little research on turning capacity in ambulatory individuals suffering from stroke-related hemiparesis. In able-bodied gait, temporal features required for straight walking become increasingly asymmetric when travelling along a path of increasing curvature. For example, the inner leg of the turn remains in single support longer while the outer leg swings around to direct the body along the curved path. During straight walking post-stroke, stance duration on the non-paretic side tends to be longer compared to the paretic side. The tendency to favor weight bearing on the non-paretic limb might restrict the extent to which interlimb asymmetry can be adapted to increasing path curvature during turns to the paretic side (ie: when the paretic leg is the inner leg of the turn). Hence, turns to the non-paretic side may be favored. The purpose of this study was to examine the pattern of asymmetry in stroke survivors when walking along a curved path. It was hypothesized that stroke participants would show more difficulty turning to their paretic side than turning to their non-paretic side.
- Department
- Sport Science
- Title
- This book does not exist: adventures in the paradoxical
- Author(s)
- Michael Picard (author), Gary Hayden (author)
- Date
- 2009
- Abstract
- 'If there is an exception to every rule, then every rule must have at least one exception - except this one.' Welcome to the world of the paradox - something that appears to be true and yet contradicts itself. From Galileo's Fan to the Cone of Democritus, and from the impossibility of motion to the infinite staircase, these mind-bending thought experiments, optical illusions and logical deceptions are on of the most interesting and accessible facets of philosophy. This Book Does Not Exist will stretch your mind, put your neurons through their paces, and challenge the foundations of your knowledge and opinions. You'll discover that you can't even trust your own senses - even though they may be all you have. Filled with puzzles that have intrigued the greatest philosophers, this fascinating collection of insoluble logical paradoxes will give your intellect a workout that you can't help but enjoy. Revised and expanded as (The Bedside Book of) "Paradoxes" (2013). Translated into multiple European languages, it has sold over 70,000 copies worldwide.
- Subject(s)
- Paradox, Psychological recreations, Philosophy, Philosophers
- Department
- Philosophy, Humanities and Social Sciences
- Title
- Cansolv CO2 capture: The value of integration
- Author(s)
- Devin Z. Shaw (author)
- Date
- 2009
- Abstract
- If CO2 emissions are to be reduced to control global warming, many large scale projects will need to be executed on a short term that capture and sequester the CO2. Most studies to date have focused on CO2 capture from power plant flue gas and concluded that the cost of CO2 scrubbing is in itself expensive and that more mature and efficient technologies are needed. CO2 emission control is also complicated by the need to provide SO2 and NOx emission control as well. Burner modifications can be used to control NOx, but other scrubbing technologies are needed to control SO2 emissions. For high sulfur coals, limestone scrubbing is generally applied, adding to the cost of power through purchases of limestone reagent and disposal of by-product gypsum. Cansolv has evolved amine based regenerable technologies that capture SO2 and CO2 and that release them in a water wet, nearly pure condition. SO2 can be converted to sulfuric acid and CO2 can be dried, compressed and sequestered without further treatment. Most importantly, energy used to capture SO2 can be recycled to help capture CO2, reducing the net energy demand of the CO2 process. The use of these two technologies together allows power companies to use higher sulfur, lower cost fuels and reduce energy consumption rates for CO2 capture. By-product sulfuric acid from the SO2 scrubbing system also provides a ready source of revenue to offset scrubbing costs. Cansolv has proven its SO2 scrubbing technologies in commercial applications since 2002. It has operated CO2 pilot plants at several different locations, logging over 6,000 hours of operation. The two technologies will come together in an integrated system, in a plant designed to generate 50 tons per day of CO2, which will start up in 2009. This paper presents important design and performance advantages of these systems.
- Subject(s)
- Carbon dioxide, Carbon dioxide capture, Air--Pollution--Control, Sulfur dioxide, Sulfur dioxide mitigation, Amines, Sulfuric acid
- Department
- Philosophy, Humanities and Social Sciences
- Title
- Re-use of nest sites by marbled murrelets (Brachyramphus marmoratus) in British Columbia
- Author(s)
- Alan E. Burger (author), Irene A. Manley (author), Michael P. Silvergieter (author), David B. Lank (author), Kevin M. Jordan (author), Thomas D. Bloxton (author), Martin G. Raphael (author)
- Date
- 2009
- Abstract
- Marbled Murrelets (Brachyramphus marmoratus) nest predominantly in the canopies of large old-growth conifers, and are listed as Threatened in Canada and 3 US states mainly as a consequence of reductions in this habitat due to logging. We assessed the re-use of nest sites (nest trees) by murrelets in British Columbia using 3 types of data: 1) evidence of return of adults to the same nest site; 2) evidence of multiple nests within the same tree; and 3) re-checking known nest trees in subsequent seasons for evidence of re-use. All 3 methods showed evidence of re-use of nest trees in different years, but there were marked regional differences in the degree of re-use. Re-use of nest trees was most frequent in regions with extensive loss of nesting habitat due to logging (Southern Mainland Coast and East Vancouver Island), and rare in a less disturbed region (West Vancouver Island). Overall, 26 of 143 (18%) nest trees climbed showed evidence of multiple nesting in separate seasons. Management of nesting habitat should incorporate these results by providing greater protection of habitat in regions where habitat is sparse, and by minimizing predation risk where murrelets more frequently re-use nest sites. Since re-use of nest sites is infrequent, managers should aim to provide murrelets with multiple choices for nest sites, such as maintaining large tracts of old-growth forest with many large trees containing potential nest platforms.
- Department
- Biology