Lake-size dependency of wind shear and convection as controls on gas exchange

High-frequency physical observations from 40 temperate lakes were used to examine the relative contributions of wind shear (u*) and convection (w*) to turbulence in the surface mixed layer. Seasonal patterns of u* and w* were dissimilar; u* was often highest in the spring, while w * increased throughout the summer to a maximum in early fall. Convection was a larger mixed-layer turbulence source than wind shear (u */w*-1 for lakes* and w* differ in temporal pattern and magnitude across lakes, both convection and wind shear should be considered in future formulations of lake-air gas exchange, especially for small lakes. © 2012 by the American Geophysical Union.Jordan S. Read, David P. Hamilton, Ankur R. Desai, Kevin C. Rose, Sally MacIntyre, John D. Lenters, Robyn L. Smyth, Paul C. Hanson, Jonathan J. Cole, Peter A. Staehr, James A. Rusak, Donald C. Pierson, Justin D. Brookes, Alo Laas, and Chin H. W

Patents progress: the Adjustable Stencil

Traces the evolution of the ‘Adjustable Stencil’ through nineteenth-century patents, stencil artefacts and promotional material, focusing on the work of S. W. Reese, C. H. Hanson and O. G. Bryant

Cracking The Solid South: The Life Of John Fletcher Hanson, Father Of Georgia Tech

The New South Expanded Conventional wisdom (and history books) tells us that Henry W. Grady was the most outspoken person in favor of post-Civil War industrialization in the South. With Lee C. Dunn\u27s book Cracking the Solid South: The Life of John Fletcher Hanson, Father of Georgia Tech we ...

Utah Science Vol. 34 No. 4, December 1973

Research helps Utah , D. Wynne Thorne 103 Ag notes 106 107 135 Color by cooling, J. LaMar Anderson, E. Arlo Richardson, Gaylen L. Ashcroft, Richard E. Griffin, Grant Hanson, and Jose Alfaro 107 Reducing freeze damage to fruit by overhead sprinkling, J. LaMar Anderson, E. Arlo Richardson, Gaylen L. Ashcroft, Jack Keller, Jose Alfaro, Grant Hanson, and Richard E. Griffin 108 A model can help save Utah\u27s fruit, E. Arlo Richardson, Gaylen L. Ashcroft, J. LaMar Anderson, Schuyler D. Seeley, and David R. Walker 111 Further processing of turkey - putting a gobble into the dog, V. T. Mendenhall 112 Corned beef and ewe or squeezing more dollars from culls, Ted Gillett 114 The energy crisis and the fate of strip mine lands - western coal mines, Thadis W. Box 117 Where did all the people go? Cal Hiibner 121 Peeled pears more flavorful 123 Recreational land development: county bane or boost? John P. Workman, Donald W. MacPherson, Darwin B. Nielsen, and James J. Kennedy124 Research may optimize range animal productivity, John C. Malechek, Lorin E. Harris, John P. Workman, and Michael Wolfe 128 Increasing the calf crop 130 Balancing livestock rations - by computer, Lorin E. Harris and Leonard C. Kearl 131 Consumers have a stake in the Logan Central Milk Testing Laboratory, G. H. Richardson 134 Behavior studies in farm live stock, B. O. Barker, R. C. Lamb, and C. W. Arave 136 Wildlife notes 137 Dairying in Utah, R. C. Lamb and G. E. Stoddard 138 Alfalfa - an ancient crop gone modern, James H. Thomas 139 Our potentially prodigious queen - alfalfa, James H. Thomas 142 Forestry and watershed research - preparation for tomorrow\u27s intensive management, Richard L. Meyn and Jan A. Henderson 144 Current publications list 14

Dyadic Green's Functions and Guided Surface Waves for a Surface Conductivity Model of Graphene

An exact solution is obtained for the electromagnetic field due to an electric current in the presence of a surface conductivity model of graphene. The graphene is represented by an infinitesimally-thin, local and isotropic two-sided conductivity surface. The field is obtained in terms of dyadic Green's functions represented as Sommerfeld integrals. The solution of plane-wave reflection and transmission is presented, and surface wave propagation along graphene is studied via the poles of the Sommerfeld integrals. For isolated graphene characterized by complex surface conductivity, a proper transverse-electric (TE) surface wave exists if and only if the imaginary part of conductivity is positive (associated with interband conductivity), and a proper transverse-magnetic (TM) surface wave exists when the imaginary part of conductivity is negative (associated with intraband conductivity). By tuning the chemical potential at infrared frequencies, the sign of the imaginary part of conductivity can be varied, allowing for some control over surface wave properties.Comment: 9 figure

Straw Hat Players programs, 1984 season (1984)

Ron Appleman, Bab Barron, Chester Bendt, Alan Breuer, Julie Carlson, John W. Carroll, Michelle Cassioppi, Mona Christenson, Lori J. Coutts, Kelly Dacus*, Donovan Driscoll, Lynn Dyrhaug, Julie Eckroth, Bennett Fraase, Robert Frank, Steven Froehlich, Nanci Greene, Raechelle Hanson, Janet Higgins, Kathleen Johnston, Christopher Kays, David Koch, Mike Larson*, Dawn Lisell, J. D. Lloyd, Tony Martin, Marilyn Louise Miller, Meredith Nelson, Nancy A. Nuthak, Pam Parenteau, Merlin Peterson, Brad Pierson, Tom Proehl, Julie Raugutt, Paul Reyburn, Debbie Richards*, Paul Robinson, David C. Rummel, Ted Allen Schmidt, Jeffrey Slade, Jill Snyder, Ryan Thiel, Gwynn Allyn Warnerhttps://red.mnstate.edu/shp_programs/1019/thumbnail.jp

Two-way time transfers between NRC/NBS and NRC/USNO via the Hermes (CTS) satellite

At each station the differences were measured between the local UTC seconds pulse and the remote UTC pulse received by satellite. The difference between the readings, if station delays are assumed to be symmetrical, is two times the difference between the clocks at the two ground station sites. Over a 20-minute period, the precision over the satellite is better than 1 ns. The time transfer from NRC to the CRC satellite terminal near Ottawa and from NBS to the Denver HEW terminal was examined

Kinetics of the reaction of nitric oxide with hydrogen

Mixtures of NO and H2 diluted in argon or krypton were heated by incident shock waves, and the infrared emission from the fundamental vibration-rotation band of NO at 5.3 microns was used to monitor the time-varying NO concentration. The reaction kinetics were studied in the temperature range 2400-4500 K using a shock-tube technique. The decomposition of nitric oxide behind the shock was found to be modeled well by a fifteen-reaction system. A principle result of the study was the determination of the rate constant for the reaction H + NO yields N + OH, which may be the rate-limiting step for NO removal in some combustion systems. Experimental values of k sub 1 were obtained for each test through comparisons of measured and numerically predicted NO profiles

Microwave remote sensing of snow experiment description and preliminary results

The active and passive microwave responses to snow were investigated at a site near Steamboat Springs, Colorado during the February and March winter months. The microwave equipment was mounted atop truck-mounted booms. Data were acquired at numerous frequencies, polarizations, and angles of incidence for a variety of snow conditions. The experiment description, the characteristics of the microwave and ground truth instruments, and the results of a preliminary analysis of a small portion of the total data volume acquired in Colorado are documented

A theoretical investigation of the aerodynamics of slender wing-body combinations exhibiting leading-edge separation

Theoretical investigation of aerodynamics of slender wing-body combinations exhibiting leading edge separatio