I experimentally test the hypothesis that the potential for selfing
increases with plant size in Mertensia ciliata (Boraginaceae), a self-compatible,
profusely-flowering perennial. This follows from the
premises that 1) pollen dispersal by pollinators between flowers is
limited, and 2) individual pollinators, in this study bumblebees, will
visit more flowers per...
In the first part of this study we monitored the development of biological control
of purple loosestrife Lythrum salicaria over a six-year period at Morgan Lake in western
Oregon. In 1992, two beetles, Galerucella pusilla and G. calmariensis (Coleoptera:
Chrysomelidae), were released to control the wetland weed at this test...
A study was completed to determine the extent of the
protein changes occurring in ground beef stored at
2°C for 10 days.
Sections of semitendinosus muscle were obtained
immediately after the slaughter of three beef animals.
Each section was divided into two equal portions, one of
which was ground and...
Cells of an obligately psychrophilic marine bacterium, Vibrio
marinus, strain MP-1, were grown at 4 C and 15 C and studied for
possible physiological differences. No differences were noted in
sugar fermentation or temperature-shift growth studies; in both cases
adequate nutrients were available. Some differences were noted in
viability retention...
Ryegrass residue consists of three main C fractions: readily available soluble C, intermediately available cellulose and hemicellulose, and slowly available lignin. Changes in chemical composition during decomposition influence rate of degradation as well as composition of the microbial community involved. Use of ¹³C-labeled plant material coupled with analysis of phospholipid...
Because of their high cost, reducing the number of boards used to fill an
order of dimension parts is an important goal in a lumber rough mill. FLCO
(Fuzzy Logic Cutting Order) is a computer program that achieves this goal.
Using the concepts of fuzzy logic control, FLCO provides a...
Excavations conducted at Indian Sands (35-CU-67C), located along Oregon's southern coast, during 2002 and 2003 identified two discreet, artifact-bearing stratigraphic units. The uppermost unit is a deflated surface containing burnt shell and lithic artifacts associated with early Holocene ¹⁴C dates, while the underlying unit contained only lithic tools and debitage,...
The implementation of concurrent engineering into many large
companies has greatly improved their product development processes.
These companies have seen significant gains in quality and customer
satisfaction with reduced product costs, defects, and time-to-market
(Lake, 1992). Many large companies have successfully employed this
relatively new product development philosophy. However, smaller...
The Direct Reactor Auxiliary Cooling System (DRACS) is a passive safety system capable of removing decay heat directly from the reactor core. Its modularity makes it scalable for use in reactors with various power levels. Work has previously been completed to support inclusion of the DRACS in liquid metal reactors...