Designing for Equity in Collaborative Environmental Governance: A Case Study of Regional Climate Change Collaboratives

Collaborative governance is an increasingly popular method for managing complex socio-ecological problems such as climate change. While collaboration seeks to involve diverse stakeholders in the decisions that affect their lives, little research addresses how structural power dynamics impact marginalized groups’ ability to exert influence within these processes. Practitioners and scholars commonly assume that inclusive participation will advance equitable participation without critically considering the fundamentally unequal systems in which collaboratives operate. This research expands on Jill Purdy’s framework for assessing power in collaborative settings and applies it to six regional climate collaboratives. Using a comparative case study model, interviews were conducted with coordinators and community-based organizations in each case. Their responses illuminated how power is wielded and managed in these groups and how process designers can help balance structural power. The resulting list of strategies are intended to support facilitators to actively promote equitable participation in this emergent form of governance

Low Surface Recombination in Hexagonal SiGe Alloy Nanowires:Implications for SiGe-Based Nanolasers

Monolithic integration of silicon-based electronics and photonics could open the door toward many opportunities including on-chip optical data communication and large-scale application of light-based sensing devices in healthcare and automotive; by some, it is considered the Holy Grail of silicon photonics. The monolithic integration is, however, severely hampered by the inability of Si to efficiently emit light. Recently, important progress has been made by the demonstration of efficient light emission from direct-bandgap hexagonal SiGe (hex-SiGe) alloy nanowires. For this promising material, realized by employing a nanowire structure, many challenges and open questions remain before a large-scale application can be realized. Considering that for other direct-bandgap materials like GaAs, surface recombination can be a true bottleneck, one of the open questions is the importance of surface recombination for the photoluminescence efficiency of this new material. In this work, temperature-dependent photoluminescence measurements were performed on both hex-Ge and hex-SiGe nanowires with and without surface passivation schemes that have been well documented and proven effective on cubic silicon and germanium to elucidate whether and to what extent the internal quantum efficiency (IQE) of the wires can be improved. Additionally, time-resolved photoluminescence (TRPL) measurements were performed on unpassivated hex-SiGe nanowires as a function of their diameter. The dependence of the surface recombination on the SiGe composition could, however, not be yet addressed given the sample-to-sample variations of the state-of-the-art hex-SiGe nanowires. With the aforementioned experiments, we demonstrate that at room temperature, under high excitation conditions (a few kW cm–2), the hex-(Si)Ge surface is most likely not a bottleneck for efficient radiative emission under relatively high excitation conditions. This is an important asset for future hex(Si)Ge optoelectronic devices, specifically for nanolasers

Vanadium containing bromoperoxidase--insights into the enzymatic mechanism using X-ray crystallography.

addresses: School of Biosciences, University of Exeter, Exeter, UK. [email protected]: Journal Article; Research Support, Non-U.S. Gov'tCopyright © 2009 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Inorganic Biochemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Inorganic Biochemistry, 2009, Vol. 103, Issue 4, pp. 617 – 621 DOI: 10.1016/j.jinorgbio.2009.01.011The X-ray crystal structure of the vanadium bromoperoxidase from the red algae Corallina pilulifera has been solved in the presence of the known substrates, phenol red and phloroglucinol. A putative substrate binding site has been observed in the active site channel of the enzyme. In addition bromide has been soaked into the crystals and it has been shown to bind unambiguously within the enzyme active site by using the technique of single anomalous dispersion. A specific leucine amino acid is seen to move towards the bromide ion in the wild-type enzyme to produce a hydrophobic environment within the active site. A mutant of the enzyme where arginine 397 has been changed to tryptophan, shows a different behaviour on bromide binding. These results have increased our understanding of the mechanism of the vanadium bromoperoxidases and have demonstrated that the substrate and bromide are specifically bound to the enzyme active site

Motion for a Resolution tabled by Mr Barbi, Mr Vergeer, Mr Pedini, Mr Langes, Mr Penders, Mr Marck, Mrs Lenz, Mrs Walz, Mr Alber and Mrs Lentz-Cornette on behalf of the Group of the European People's Party (C-D Group) pursuant to Rule 47 of the Rules of Procedure on Nicaragua, Working Documents 1983-1984, Document 1-237/83, 26 April 1983

Peroxygenases offer an attractive means to address challenges in selective oxyfunctionalization chemistry. Despite this, their application in synthetic chemistry remains challenging due to their facile inactivation by the stoichiometric oxidant H2O2. Often atom-inefficient peroxide generation systems are required, which show little potential for large-scale implementation. Here, we show that visible-light-driven, catalytic water oxidation can be used for in situ generation of H2O2 from water, rendering the peroxygenase catalytically active. In this way, the stereoselective oxyfunctionalization of hydrocarbons can be achieved by simply using the catalytic system, water and visible light.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.BT/BiocatalysisBN/Greg Bokinsky La

Communities of Place Vs Communities of Interest in the United States: Citizen Information and Locally Unwanted Land Uses in EIA

Highlights The distances from citizens\u27 addresses to the project were geocoded. Citizen comments either contested knowledge in the EIA or provided missing information. Type of Community → Concern/Type of Information →Project Outcome Contested knowledge on the need for the project was important. Institutional preferences were important in explaining the outcomes