436 research outputs found
EQUITABLE CROPSHARE ARRANGEMENTS FOR INTENSIVE DRYLAND CROPPING SYSTEMS
As producers move toward intensive dryland cropping systems, the potential for inequities in cropshare lease arrangements exists. A whole farm budget was developed to evaluate returns for landowner and tenant from different cropshare lease arrangements. Results suggest that cropshare lease adjustments are necessary as cropping systems become more intensive.Crop Production/Industries,
Historical Cattle and Beef Prices, Seasonal Patterns, and Futures Basis for Nebraska, 1960-2004
Prices for different classes of feeder steers and heifers, slaughter steers and heifers, slaughter cows and bulls are reported in Tables 1-23. These prices are analyzed in the text of this publication. Discounts and premiums for various weights, grades and sex are identified. Each price series is analyzed to determine long-term price trends and seasonal patterns. Feeder and live cattle basis are calculated using USDA monthly average cash prices and the monthly average futures prices, Tables 14-15, 23. Carcass cut-out values are reported in Tables 24-26
Particle and particle pair dispersion in turbulence modeled with spatially and temporally correlated stochastic processes
In this paper we present a new model for modeling the diffusion and relative
dispersion of particles in homogeneous isotropic turbulence. We use an
Heisenberg-like Hamiltonian to incorporate spatial correlations between fluid
particles, which are modeled by stochastic processes correlated in time. We are
able to reproduce the ballistic regime in the mean squared displacement of
single particles and the transition to a normal diffusion regime for long
times. For the dispersion of particle pairs we find a -dependence of the
mean squared separation at short times and a -dependence for long ones. For
intermediate times indications for a Richardson law are observed in
certain situations. Finally the influence of inertia of real particles on the
dispersion is investigated.Comment: 10 pages, 7 figures, 1 tabl
EC08-137 Producing and Marketing Proso Millet in the Great Plains
Extension Circular 08-137 discusses producing and marketing proso millet in the great plains
Collaborating with Wheat Producers in Demonstrating Areawide Integrated Pest Management
Focus groups were used to initiate collaborative relationships with wheat producers while learning about their farming history and decision-making. Focus group transcripts illustrate that producers were less confident in evaluating insect management problems compared to weed management. Producers do rely on Cooperative Extension in managing insect problems. Extension educators continue to play an important role in increasing producer\u27s knowledge of simplified field scouting and insect identification technology
Pre-clinical evaluation of antiproteases as potential candidates for HIV-1 pre-exposure prophylaxis
Previous studies on highly HIV-1-exposed, yet persistently seronegative women from the Punwami Sex Worker cohort in Kenya, have shed light on putative protective mechanisms, suggesting that mucosal immunological factors, such as antiproteases, could be mediating resistance to HIV-1 transmission in the female reproductive tract. Nine protease inhibitors were selected for this study: serpin B4, serpin A1, serpin A3, serpin C1, cystatin A, cystatin B, serpin B13, serpin B1 and α-2-macroglobulin-like-protein 1. We assessed in a pilot study, the activity of these antiproteases with cellular assays and an ex vivo HIV-1 challenge model of human ecto-cervical tissue explants. Preliminary findings with both models, cellular and tissue explants, established an order of inhibitory potency for the mucosal proteins as candidates for pre-exposure prophylaxis when mimicking pre-coital use. Combination of all antiproteases considered in this study was more active than any of the individual mucosal proteins. Furthermore, the migration of cells out of ecto-cervical explants was blocked indicating potential prevention of viral dissemination following amplification of the founder population. These findings constitute the base for further development of these mucosal protease inhibitors for prevention strategies
Endothelin-1 (ET-1) blockade improves mesenteric perfusion in a porcine low cardiac output model
Norepinephrine-induced blood pressure increase to pre-shock levels worsens regional flow distribution in porcine septic shock
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