Endohedral Impurities in Carbon Nanotubes

A generalization of the Anderson model that includes pseudo-Jahn-Teller impurity coupling is proposed to describe distortions of an endohedral impurity in a carbon nanotube. Treating the distortion within mean-field theory, spontaneous axial symmetry breaking is found when the vibronic coupling strength g exceeds a critical value g$_c$. The effective potential in the symmetry-broken state is found to have O(2) symmetry, in agreement with numerical calculations. For metallic zigzag nanotubes endohedrally-doped with transition metals in the dilute limit, the low-energy properties of the system may display two-channel Kondo behavior; however, strong vibronic coupling is seen to exponentially suppress the Kondo energy scale.Comment: 4 pages, 2 figure

Intensive Archeological Survey For The Proposed Widening Of CR 110 From US 79 To Sam Houston Avenue In Williamson County, Texas

Between July 21 and 25, 2014, Blanton & Associates, Inc. (B&A), at the request of Williamson County, conducted an intensive archeological survey (as per 13 TAC 26.20 and 26.5) of 6.5 miles of proposed improvements along County Road (CR) 110 near the City of Hutto in Williamson County, Texas. The 100 percent visual inspection, augmented by strategically placed shovel tests and backhoe trenches, was negative for cultural resources within the proposed project area. Based on these data, B&A recommends that the proposed improvements to County Road (CR) 110 in Williamson County, Texas, be allowed to proceed as planned without additional investigations with regards to cultural resources. Curation was unnecessary

The North Wyke Farm Platform: Fine Resolution (15-Minute) Hydrology and Water Quality Data

The North Wyke Farm Platform (NWFP) was established in 2010 to study and improve grassland livestock production at the farm-scale. The NWFP uses a combination of environmental sensors, routine field and lab-based measurements, and detailed management records to monitor livestock and crop production, emissions to water, emissions to air, soil health, and biodiversity. The rich NWFP datasets help researchers to evaluate the effectiveness of different grassland (and arable) farming systems, which in turn, contributes to the development of sustainable, resilient and net zero land management strategies. This document serves as a user guide to the hydrology and water quality data collected at a 15-minute temporal resolution from the NWFP. The guide gives details of the instrumentation, sensor calibration and data collection and is associated with other dedicated user guides that detail the design, establishment and development of the NWFP, field events, and the quality control process of datasets

The North Wyke Farm Platform: Livestock Data

The North Wyke Farm Platform (NWFP) was established in 2010 to study and improve grassland livestock production at the farm-scale. The NWFP uses a combination of environmental sensors, routine field and lab-based measurements, and detailed management records to monitor livestock and crop production, emissions to water, emissions to air, soil health, and biodiversity. The rich NWFP datasets help researchers to evaluate the effectiveness of different grassland (and arable) farming systems, which in turn, contributes to the development of sustainable, resilient and net zero land management strategies. This document serves as a user guide to the collection and management of livestock data and is associated with other dedicated user guides that detail the design, establishment and development of the NWFP, and field events