Electrochemistry of 2,2'-Bipyridine Complexes of Cobalt in the Presence of Acrylonitrile

The previously claimed (1) catalysis of the electroreduction of acrylonitrile by means of a complex of Co(I) and 2,2′‐bipyridine is shown to be erroneous. The “catalytic currents” result instead from the two‐electron reduction of a mixed complex of Co(I) acrylonitrile and 2,2′‐bipyridine. The equilibrium and forward rate constants for the formation of the mixed complex have been estimated and its spectrum is given. The behavior of a number of other vinyl monomers, which mimic acrylonitrile, is described

Yield and laboratory evaluations of five triticale cultivars, Arthur wheat and Balbo rye in East Tennessee

An experiment was conducted for two years on Decatur silt loam soil at Knoxville, Tennessee, to compare the yields of five triticale cultivars, Arthur wheat and Balbo rye. The study also compared clipping to two stubble heights and planting either early October or late October to early November. Several laboratory evaluations of forage and grain yields also were made. The experimental design was a randomized complete block design, with forage evaluations analyzed as a split-split-plot arrangement and grain analyzed as a split-plot arrangement of treatments within each year. Regression analysis was used to determine the sums of squares for the analyses of variance since the statistical design was unbalanced due to winter kill. Balbo rye yielded an average of almost 1000 kg/ha more forage than the next highest cultivar. Fas Gro 131 triticale, when harvested in the vegetative stage of growth for two years. Planting early and cutting to a stubble height of 5 cm resulted in significantly more oven-dry forage clipped in this stage of maturity. Percent fiber of most cultivars tested ranged from approximately 20 percent in early spring to about 32 percent by the last vegetative stage harvest. Balbo rye ranged from 26 to 40 percent over the vegetative stage harvests during the two years tested. Percent lignin ranged from about 2 percent to almost 5 percent, with Balbo rye again higher than most other cultivars. Percent crude protein of the cultivars harvested in the vegetative stage ranged from approximately 23 percent in early spring to 15 percent by the last vegetative stage cuttings. Most cultivars were similar in percent crude protein. Fas Gro 131 triticale averaged 8496 kg/ha over the two years tested compared to 4981 kg/ha for Balbo rye when cut in the late milk to early dough stage of maturity. Planting early and cutting to a stubble height of 5 cm resulted in the most oven-dry forage. Percent fiber of the cultivars ranged from 32 to 43 percent, while percent lignin ranged from 4 to 6.5 percent during the two years of this study. There was little variation among the cultivars with respect to percent crude protein or percent P, Mg and K, Arthur wheat and Balbo rye averaged 0.09 and 0.21 percent Ca, respectively, while all triticale cultivars were intermediate. When harvested as grain. Fas Gro 131 triticale yielded as high as or higher than Arthur wheat and Balbo rye when planted early; however, Arthur and Balbo were much more stable with respect to date of planting. Percent crude protein ranged from 14 to 19 percent over the two years of this study. All cultivars were similar in percent P, Mg, K and Ca

Field Days and Farm Tours and 2001 Growing Season

Includes: Field Days and Farm Tours 2001 Growing Seaso

An Evaluation of Heterosis and Mating Systems in Hereford Cattle

The objective of this project was to evaluate the effectiveness of inbreeding in furthering the improvement of beef cattle. Results obtained with other species, notably corn, have led to similar research projects with farm animals

Adhesion molecules and inflammatory injury

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/154291/1/fsb2008008008.pd

Ultraviolet Imagery of NGC 6752: A Test of Extreme Horizontal Branch Models

We present a 1620 A image of the nearby globular cluster NGC 6752 obtained with the Ultraviolet Imaging Telescope (UIT) during the Astro-2 mission of the Space Shuttle Endeavour in 1995 March. An ultraviolet-visible color-magnitude diagram (CMD) is derived for 216 stars matched with the visible photometry of Buonanno et al. (1986). This CMD provides a nearly complete census of the hot horizontal branch (HB) population with good temperature and luminosity discrimination for comparison with theoretical tracks. The observed data show good agreement with the theoretical zero-age horizontal branch (ZAHB) of Sweigart (1996) for an assumed reddening of E(B-V) = 0.05 and a distance modulus of 13.05. The observed HB luminosity width is in excellent agreement with the theoretical models and supports the single star scenario for the origin of extreme horizontal branch (EHB) stars. However, only four stars can be identified as post-EHB stars, whereas almost three times this many are expected from the HB number counts. If this effect is not a statistical anomaly, then some non-canonical effect may be decreasing the post-EHB lifetime. The recent non-canonical models of Sweigart (1996), which have helium-enriched envelopes due to mixing along the red giant branch, cannot explain the deficit of post-EHB stars, but might be better able to explain their luminosity distribution.Comment: 14 pages, AASTeX, includes 4 EPS figures ApJ Letters accepte

Analgesic Management of Pain in Elite Athletes: A Systematic Review

Objective: To identify the prevalence, frequency of use, and effects of analgesic pain management strategies used in elite athletes. Design: Systematic literature review. Data Sources: Six databases: Ovid/Medline, SPORTDiscus, CINAHL, Embase, Cochrane Library, and Scopus. Eligibility Criteria for Selecting Studies: Empirical studies involving elite athletes and focused on the use or effects of medications used for pain or painful injury. Studies involving recreational sportspeople or those that undertake general exercise were excluded. Main Results: Of 70 articles found, the majority examined the frequency with which elite athletes use pain medications, including nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, anesthetics, and opioids. A smaller set of studies assessed the effect of medications on outcomes such as pain, function, and adverse effects. Oral NSAIDs are reported to be the most common medication, being used in some international sporting events by over 50% of athletes. Studies examining the effects of pain medications on elite athletes typically involved small samples and lacked control groups against which treated athletes were compared. Conclusions: Existing empirical research does not provide a sufficient body of evidence to guide athletes and healthcare professionals in making analgesic medication treatment decisions. Based on the relatively robust evidence regarding the widespread use of NSAIDs, clinicians and policymakers should carefully assess their current recommendations for NSAID use and adhere to a more unified consensus-based strategy for multidisciplinary pain management in elite athletes. In the future, we hope to see more rigorous, prospective studies of various pain management strategies in elite athletes, thus enabling a shift from consensus-based recommendations to evidence-based recommendations

Ultraviolet Imaging of the Globular Cluster 47 Tucanae

We have used the Ultraviolet Imaging Telescope to obtain deep far-UV (1620 Angstrom), 40' diameter images of the prototypical metal-rich globular cluster 47 Tucanae. We find a population of about 20 hot (Teff > 9000 K) objects near or above the predicted UV luminosity of the hot horizontal branch (HB) and lying within two half-light radii of the cluster center. We believe these are normal hot HB or post-HB objects rather than interacting binaries or blue stragglers. IUE spectra of two are consistent with post-HB phases. These observations, and recent HST photometry of two other metal-rich clusters, demonstrate that populations with rich, cool HB's can nonetheless produce hot HB and post-HB stars. The cluster center also contains an unusual diffuse far-UV source which is more extended than its V-band light. It is possible that this is associated with an intracluster medium, for which there was earlier infrared and X-ray evidence, and is produced by C IV emission or scattered light from grains.Comment: 13 pages AASLaTeX including one postscript figure and one bitmapped image, JPEG format. Submitted to the Astronomical Jorunal. Full Postscript version available at http://www.astro.virginia.edu/~bd4r