Origin and Destination of Major South Dakota Grain Shipments

South Dakota, being sparsely populated and located a considerable distance from major centers of population, has relatively few grain processing facilities located within her borders. The problem of transportation is, therefore, considered by many to be the major marketing problem with respect to the grain industry. The purpose of this study was to obtain better information about the destination of and the mode of transportation used for shipping grain products from South Dakota.1 Since the state doesn\u27t possess navigable waterways suitable for shipment of grain products, the survey was limited to truck and rail shipments. Some of South Dakota\u27s surface shipments are, however, destined to ports along the Great Lakes and the Missouri or Mississippi River for reshipment by boat or barge

Dynamic nuclear polarization and spin-diffusion in non-conducting solids

There has been much renewed interest in dynamic nuclear polarization (DNP), particularly in the context of solid state biomolecular NMR and more recently dissolution DNP techniques for liquids. This paper reviews the role of spin diffusion in polarizing nuclear spins and discusses the role of the spin diffusion barrier, before going on to discuss some recent results.Comment: submitted to Applied Magnetic Resonance. The article should appear in a special issue that is being published in connection with the DNP Symposium help in Nottingham in August 200

The JWST early-release science program for direct observations of exoplanetary systems II: A 1 to 20 μm spectrum of the planetary-mass companion VHS 1256-1257 b

Stars and planetary system