An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Abstract : This report explores the preparation of photovoltaic devices with enhanced light harvesting characteristics. In particular plastic hybrid photovoltaic devices based on electroactive polymer/inorganic components are studied. Significant advances were made in polymer-nanocrystal as well as polymer-titania photovoltaic devices through the development of novel polythiophenes that enhance both the interface and electronic communications between the polymer and the inorganic.
The California Mediterranean savanna has harsh summer conditions with minimal soil moisture, high temperature, high incoming solar radiation and little or no precipitation. Deciduous blue oaks, Quercus douglasii Hook. and Arn., are winter-deciduous obligate phreatophytes, transpiring mostly groundwater throughout the summer drought. The objective of this work is to fully characterize the seasonal trends of photosynthesis in blue oaks as well as the mechanistic relationships between leaf structure and function. We estimate radiative load of the leaves via the FLiES model and perform in situ measurements of leaf water potential, leaf nitrogen content, an index of chlorophyll content (SPAD readings), photosynthetic and electron transport capacity, and instantaneous rates of CO2 assimilation and electron transport. We measured multiple trees over 3 years providing data from a range of conditions. Our study included one individual that demonstrated strong drought stress as indicated by changes in SPAD readings, leaf nitrogen and all measures of leaf functioning. In the year following severe environmental stress, one individual altered foliation patterns on the crown but did not die. In all other individuals, we found that net carbon assimilation and photosynthetic capacity decreased during the summer drought. SPAD values, electron transport rate (ETR) and quantum yield of photosystem II (PSII) did not show a strong decrease during the summer drought. In most individuals, PSII activity and SPAD readings did not indicate leaf structural or functional damage throughout the season. While net carbon assimilation was tightly coupled to stomatal conductance, the coupling was not as tight with ETR possibly due to contributions from photorespiration or other protective processes. Our work demonstrates that the blue oaks avoid structural damage by maintaining the capacity to convert and dissipate incoming solar radiation during the hot summer drought and are effective at fixing carbon by maximizing rates during the mild spring conditions.
Abstract Polykristallines Re scheint bei niedrigen Konversionsgraden und Reaktantendrücken von 20 at sowie Temp. zwischen 603 und 713 Kals Katalysator für die NH 3 ‐Synthese um nahezu eine Größenordnung aktiver zu sein als die aktivste Kristallfläche des Eisens (Fe(l 1 1)).
No abstract is provided for this article.
Jay Keasling, co-leader of Berkeley Lab's Helios Project, is a groundbreaking researcher in the new scientific field of synthetic biology. In Helios, he directs the biology program, incorporating a range of approaches to increasing the efficacy and economy of plants and cellulose-degrading microbes to make solar-based fuels. He is a UC Berkeley professor of Chemical and Bioengineering, and founder of Amyris Biotechnologies, a company that was honored as a Technology Pioneer for 2006 by the World Economic Forum. Keasling has succeeded in using synthetic biology to develop a yeast-based production scheme for precursors of the antimalarial drug artemisinin in work funded by the Bill & Melinda Gates Foundation.
Contributors.Introduction: Symbolic Power and Democratic Practice.1 Pointers on Pierre Bourdieu and Democratic Politics.(Loic Wacquant).2 From the King's House to the Reason of State: A Model of the Genesis of the Bureaucratic Field.(Pierre Bourdieu).3 The Mystery of Ministry: From Particular Wills to the General Will.(Pierre Bourdieu).4 Scholarship with Commitment: On the Political Engagements of Pierre Bourdieu.(Franck Popupeau and Thierry Discepolo).5 Ancien Regime Ballots: A Double Historicization of Electoral Practices.(Olivier Christin).6 Making the People Speak: On the Social Uses of and Reactions to Opinion Polls.(Patrick Champagne).7 Symbolic Power in the Rule of the State Nobility.(Loic Wacquant).8 The Making and Breaking of the Czechoslovak Political Field.(Gil Eyal).9 The Cunning of Imperialist Reason.(Pierre Bourdieu and Loic Wacquant).Key Writings of Pierre Bourdieu on Democratic Politics.Index
