Family Ties and Child Placement

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73323/1/j.1545-5300.1978.00289.x.pd

Molecular Dynamics Study of the Local Structure of Photovoltaic Polymer PCDTBT

To meet the huge demand for renewable energy, significant research effort focuses on creating efficient organic photovoltaic (OPV) devices. In comparison to silicon-based semiconductors, OPV materials have many superior properties such as cost effectiveness, being lightweight, and flexibility, which lead to a high potential for the replacement of silicon-based semiconductors. Recently, a large number of new alternating copolymer materials have demonstrated high power conversion efficiency (PCE). These successful polymers typically have low long-range order but a high hole mobility which directly affects the PCE which depends on polymer structure. In this study, a solution molecular model for poly[N-9″-hepta-decanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)]:[6,6]-phenyl (PCDTBT) is developed and subsequently a molecular dynamics simulation conducted in order to understand the structure of the polymer solution. The simulation results are consistent with a low-solubility polymer that requires long equilibration times to planarize. The structural addition of side chains to inhibit rotation of thiophene rings could improve the conjugation and processability of PDCTBT leading to further improvements in OPV efficiency or hole mobility

Whole-Farm Nutrient Management on Dairy Farms to Improve Profitability and Reduce Environmental Impacts

The National Center for Manure and Animal Waste Management determined that a large body of knowledge exists about livestock waste and nutrient management, but that the development and implementation of manure and animal waste best management practices is limited by lack of integration of research and extension information. A collaborative project was initiated to define and evaluate nutrient management tools developed and used in New York and Wisconsin that are applicable across regions, and tools or models that are region specific but whose approach and structure may be applicable across regions. This document is the final report of the project. It contains outlines of nine nutrient management tools used in New York or Wisconsin and provides readers with comparative reviews of the tools to aid in tool selection. Model developers and agricultural educators can use this information to improve their nutrient management research and teaching efforts. In addition to software evaluations, this project report describes the dairy production systems and state regulatory environments and gives an overview of three university courses developed to address nutrient management issues in New York and Wisconsin. The primary audiences for this project are researchers, extension personnel and other professionals that generate knowledge and provide assistance to dairy farmers in issues related to feed, fertilizer and manure management

The Madison conference : proceedings of the Forest Experiment Station Conference, Forest Products Laboratory, Madison, Wisconsin, March 10-22, 1924.

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