The object of this study is to characterize the aero-thermal performance of a rectangular turbine blade cooling channel for gas turbines equipped with turbulence promoters, square section ribs, inclined at 45 degrees with respect to the main flow direction. With this aim, a P.I.V investigation of the flow field within an inter-rib space inside four cooling channel models has been done. The pres...

43 A is an important water management practice in the midwestern United States to remove excess water from poorly drained areas and to provide traffi cable conditions for agricultural production. About 30% of the total land area and 50% of the crop land in Indiana is subsurface drained (Economic Research Service, 1987). Th ere are growing concerns about the potential negative environmental impa...

RNA has been shown recently to playa prominent role in regulating gene expression in a wide variety of organisms. Natural examples of RNA-dependent gene regulation include modulation of transcription (Wassarman and Storz, 2000; Winkler et al., 2002), translation (Moller-Jensen et al., 200 I; Moller et al., 2002; Bartel, 2004), and the temporal stability of mRNA (Masse et al., 2003; Meister and ...

Functional characterization of a protein sequence is one of the most frequent problems in biology. This task is usually facilitated by an accurate three-dimensional (3-D) structure of the studied protein. In the absence of an experimentally determined structure, comparative or homology modeling often provides a useful 3-D model for a protein that is related to at least one known protein structu...

We simulate penetration of large projectiles into dry granular media using two-dimensional soft particle molecular dynamics. We systematically vary the physical parameters of the projectile (density, size, impact energy). Our results confirm the recently observed scaling of the crater depth with impact energy as observed by Uehara et al. (2003) and the effect of constant deceleration of the bal...

Controlled silicon structures on the micron to nanometer order have received much attention owing to their potential applications in various fields such as electrochemical, optoelectrical, and biological sciences. Although the techniques commonly used in fabricating nano-/microstructured silicon are conventional lithographic techniques using a resist mask with an optical, electron, or X-ray bea...

The Regional Atmospheric Modeling and Data Assimilation System (RAMDAS) is a 4 dimensional variational analysis (4DVAR) data assimilation algorithm (Zupanski et. al. 2004) developed at the Cooperative Institute for Research in the Atmosphere (CIRA) at Colorado State University (CSU). The current version of RAMDAS assimilates satellite observations from the Geostationary Operational Environmenta...

A method was presented to transform sampled machine positional data obtained from a global positioning system (GPS) receiver into a two-dimensional raster map of number of passes as a function of location. The effect of three sources of error in the transformation process were investigated: path sampling rate (receiver sampling frequency); output raster resolution; and GPS receiver errors. Tota...

in 2004, klastersky et al. reported that fever isa common finding in patients with hematologicmalignancies, occurring in more than 80% of thepatients during or after chemotherapy.[1] he andhis colleagues also reported that the most fearedinfection in neutropenic patients is bloodstreaminfection (bsi), which significantly increases themortality rate of these patients.[2] in 2009, viscoliet al.[3...

Variable selection via penalized estimation is appealing for dimension reduction. For penalized linear regression, Efron, et al. (2004) introduced the LARS algorithm. Recently, the coordinate descent (CD) algorithm was developed by Friedman, et al. (2007) for penalized linear regression and penalized logistic regression and was shown to gain computational superiority. This paper explores...