A need exists to develop a high speed dynamic tow carriage used to
motivate hydrodynamic specimens through a fluid environment. It is
desired to simulate high Reynolds number unsteady flow about the
specimen by towing the specimen through the fluid. The fluid
environment is to be provided by the existing...
The output characteristics of a conventional GaAs depletion-mode MESFET device have been investigated. One of the important parameters of the small-signal GaAs MESFET model, g[subscript ds] (output conductance), is shown to be frequency and temperature dependent. Variations in g[subscript ds] are a serious problem in many analog and digital circuits...
The collision of the Indian subcontinent with Asia beginning 40 million years ago
produced the Himalayan orogenic belt, the largest continental collision belt active today. The foreland fold-and-thrust belt in northern Pakistan consists of the Salt Range-Potwar Plateau area. In this region the distance from the Main Boundary Thrust(MBT) to...
The purpose of this study was to determine the extent to which an Immersion Bilingual Mathematics Institute (IBMI) can affect the mathematics achievement of entering seventh grade students of Mexican-American heritage. Mathematics achievement was defined as
mathematics skills measured by the Mathematics Computation and Mathematics Concepts and Applications tests of...
Mount Shasta, the southernmost stratovolcano in the Cascade Range (41.4°N) has
frequently produced lahars of various magnitudes during the last 10,000 yr. These include
large flows of eruptive origin, reaching more than 40km from the summit, and studies have
shown that at least 70 debris flows of noneruptive origin have...
A need exists to develop a non-destructive testing technique that can identify
the formation and propagation of diagonal tension cracks in conventionally
steel reinforced concrete deck girder (RCDG) highway bridges in the State of
Oregon. Such a technique could be included into a structural health
monitoring (SHM) system installed on...
Of 14 transgenic poplar genotypes (Populus tremula × Populus alba) with antisense 4-coumarate:coenzyme A ligase that were grown in the field for 2 years, five that had substantial lignin reductions also had greatly reduced xylem-specific conductivity compared with that of control trees and those transgenic events with small reductions in...
We studied xylem anatomy and hydraulic architecture in 14 transgenic insertion events and a control line of hybrid poplar (Populus spp.) that varied in lignin content. Transgenic events had different levels of down‐regulation of two genes encoding 4‐coumarate:coenzyme A ligase (4CL). Two‐year‐old trees were characterized after growing either as free‐standing...
Macromoth diversity, abundance, and community structure in the topographically complex
HJ Andrews Experimental Forest and LTER site was studied on the west slope of the Cascade Range,
Oregon. Data on 493 macromoth species (62,221 individuals) was sampled eight times/year at 20 locations
from 2004 to 2008 and examined using multivariate...
Full Text:
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vegetation, topography, and seasonality
STEVEN A. HIGHLAND,1,� JEFFREY C. MILLER,2 AND JULIA A. JONES1
