Meeting the energy demands of the future is one of the most important challenges facing the engineering community today. An example of this problem is transportation fuels. Most of the current transportation fuels are composed of petroleum hydrocarbons. Finding a viable alternative is important given the potential scarcity of these...
The majority of our modern understanding of bacterial pathogenesis is based on the strategy that involves screening bacterial genomes for the presence of the genes encoding pathogenic factors, and analysis of these genes via forward and reverse genetics. Chlamydiae represent a unique group of pathogenic bacteria in which it is...
The formation of cytosine hydroperoxide was detected in
aqueous cytosine solutions irradiated with Co-60 γ-rays at pH 2.
The nucleotide of cytosine, cytidylic acid, forms a hydroperoxide
which was detected in neutral solution. The stability of the hydroperoxides of cytosine, thymine, and their nucleotides was found to
be a function...
Determining accurate elevations is important for many engineering and scientific applications, and finding these heights via GNSS increases efficiency and significantly reduces the costs as compared to precise geodetic leveling. The National Geodetic Survey (NGS) has published guidelines for determining both ellipsoidal and orthometric heights with GPS to within 2...
To derive ellipsoid heights on passive marks with cm-level accuracy, many current specifications require the collection and adjustment of long-duration, static Global Navigation Satellite System (GNSS) sessions. To increase efficiency, a survey procedure that includes real-time kinematic vectors from a real-time GNSS network (RTN) was evaluated. Thirty different “hybrid” networks...
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Daniel T. Gillins
To derive ellipsoid heights on passive marks with cm-level accuracy, many
Chlamydia abortus, an intracellular bacterium, spreads through flocks of sheep and goats, causing ovine enzootic abortion (OAE). Chlamydiae develop within a pathogen-modified vacuole in the host cell called the inclusion, which allows the bacteria to acquire host resources. The morphology of the inclusion varies between chlamydial species. Some species fuse...
Enduracidin is an antibiotic produced by Streptomyces fungicidicus that is effective against Gram-positive bacteria. Previous work identified seventy-eight mutations in an S. fungicidicus strain that produces a significantly higher level of enduracidin than the wild type strain, ATCC 21013. Eleven mutations were analyzed individually to identify those that may contribute...
Chlamydia is a genus of obligate intracellular bacteria that undergo a unique, biphasic developmental cycle. The infectious and metabolically inert Elementary Bodies (EBs) begin the cycle of infection by attaching and invading a host cells. Once inside, the EBs differentiate into the metabolically active, dividing Reticulate Bodies (RBs) within their...
These studies are part of the Demonstration of Ecosystem Management Options (DEMO) study, a program researching the effects of different levels and patterns of green-tree retention on ecological, economic, and social phenomena. We restricted our studies to the 15% basal area, evenly dispersed retention treatment. Our objectives were, first, to...
I evaluated the response of the federally listed endangered plant species Bradshaw's desert parsley (Lomatium bradshawii) to livestock grazing and small mammal depredation at Oak Creek, Linn County, Oregon, 1997-1998. I established six study blocks (three each in wooded and herbaceous pastures) with plots in each block randomly assigned to...