Two-particle BoseEinstein correlations in pp collisions at √s = 0.9 and 7 TeV measured with the ATLAS detector

The paper presents studies of Bose–Einstein Correlations (BEC) for pairs of like-sign charged particles measured in the kinematic range pT > 100 MeV and |η| <2.5 in proton–proton collisions at centre-of-mass energies of 0.9 and 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. The integrated luminosities are approximately 7 μb−1, 190 μb−1 and 12.4 nb-1 for 0.9 TeV,7 TeV minimum-bias and 7 TeV high-multiplicity data samples, respectively. The multiplicity dependence of the BEC parameters characterizing the correlation strength and the correlation source size are investigated for charged-particle multiplicities of up to 240. A saturation effect in the multiplicity dependence of the correlation source size parameter is observed using the high-multiplicity 7 TeV data sample. The dependence of the BEC parameters on the average transverse momentum of the particle pair is also investigated

Nourishing the City: Integrating Local Food Systems in Seattle's Central District

Thesis (Master's)--University of Washington, 2021The agriculture industry is one of the main contributors to environmental degradation due to massive amounts of water and energy consumption, greenhouse gas emissions, and waste. Meanwhile, food insecurity disproportionately affects on populations based on race, socio-economic factors, and location. This thesis explores the opportunities to develop a food center within Seattle; one that nourishes the community and the environment, while working to equitably serve people through access, affordability, education, and social capital. Centered between Seattle’s Central and International Districts and near the two major Washington interstates, the proposed food center on Rainier Avenue is situated at a critical node in the city; one that is culturally diverse, food-centric, and rapidly developing. The project incorporates the adaptive reuse of a 1923 cosmetics factory into an urban food center for locals and tourists; a place to serve the community and educate visitors on sustainable food practices, food supply systems, and the Circular Economy model. The food center contains aspects from each phase within the food supply chain, from production to waste recovery, to provide visitors with a holistic understanding of the food system. The center also provides spaces for the community to learn, grow, gather, and dine together. Nourishing the City is reimagining how local food systems can better integrate into under-resourced communities for a more equitable and sustainable future

2019 Sustainability Report: College of Business and Economics, College of Health Sciences and School of Public Service

The focus of the Blue Sky Institute Sustainability Reporting Badge is to examine the social, environmental and economic impacts of three colleges at Boise State University. The College of Business and Economics (COBE), the College of Health Sciences (COHS), and the School of Public Service (SPS) are all measuring and transparently reporting their impacts on their stakeholders. The importance of this reporting is looking past the financial and economic bottom lines of these colleges and including the social and environmental impacts as well. Blue Sky’s sustainability reports are 100% fully student-led and student driven beginning with a materiality assessment of the college’s three main stakeholder groups to identify what the reporting team will be researching for the year. From there, the reporting team finalizes its reporting topics and begins collecting and analyzing data. Students write and compile each college’s report, and findings are presented to each college’s leadership team with recommendations of improvement. Recommendations are approved and students are provided the opportunity to work with campus leadership to implement report recommendations

Lindqvist polyoxometalates as electrolytes in p-type dye sensitized solar cells

The development of new redox couples provides a clear strategy to improve power conversion efficiency (PCE) in p-type dye-sensitized solar cells (p-DSSCs) through enabling improvements in open-circuit voltage (VOC). In this work we report the use of molybdenum and tungsten containing Lindqvist polyoxometalates (POMs), [TBA]2Mo6O19 and [TBA]2W6O19, as an alternative to the traditionally used I−/I3− redox mediator in p-DSSCs. POM electrolytes are cheap and easy to synthesize, air stable and transparent, making them suitable for tandem solar cell applications. Electrolytes were evaluated using a simple testing device to benchmark the respective devices. Up to a 5-fold increase in VOC was observed for p-DSSCs employing electrolytes with POMs upon comparison with traditionally used I3−/I−, while short-circuit photocurrents with the same order of magnitude were observed under identical dilute conditions

Synthesis of Amino Acid Cofactor in Cysteine Dioxygenase Is Regulated by Substrate and Represents a Novel Post-translational Regulation of Activity*S⃞

Cysteine dioxygenase (CDO) catalyzes the conversion of cysteine to cysteinesulfinic acid and is important in the regulation of intracellular cysteine levels in mammals and in the provision of oxidized cysteine metabolites such as sulfate and taurine. Several crystal structure studies of mammalian CDO have shown that there is a cross-linked cofactor present in the active site of the enzyme. The cofactor consists of a thioether bond between the γ-sulfur of residue cysteine 93 and the aromatic side chain of residue tyrosine 157. The exact requirements for cofactor synthesis and the contribution of the cofactor to the catalytic activity of the enzyme have yet to be fully described. In this study, therefore, we explored the factors necessary for cofactor biogenesis in vitro and in vivo and examined what effect cofactor formation had on activity in vitro. Like other cross-linked cofactor-containing enzymes, formation of the Cys-Tyr cofactor in CDO required a transition metal cofactor (Fe2+) and O2. Unlike other enzymes, however, biogenesis was also strictly dependent upon the presence of substrate. Cofactor formation was also appreciably slower than the rates reported for other enzymes and, indeed, took hundreds of catalytic turnover cycles to occur. In the absence of the Cys-Tyr cofactor, CDO possessed appreciable catalytic activity, suggesting that the cofactor was not essential for catalysis. Nevertheless, at physiologically relevant cysteine concentrations, cofactor formation increased CDO catalytic efficiency by ∼10-fold. Overall, the regulation of Cys-Tyr cofactor formation in CDO by ambient cysteine levels represents an unusual form of substrate-mediated feed-forward activation of enzyme activity with important physiological consequences