Index Catalog // ScholarsArchive@OSU

Directing ecological succession : the role of competition in restoring semi-arid grasslands dominated by invasive plants

Creator:: Mangla, Seema
Abstract:: Successful ecosystem restoration requires an understanding of the ecological processes directing succession. One of the challenges in the semi-arid grasslands of western United States is replacement of native species by invasive annual grasses. Solutions to this problem require identifying and manipulating ecological processes that direct succession to favor desired vegetation....
Resource Type:: Dissertation
Full Text:: : _______________________________________________________ Roger L. Sheley Steven R. Radosevich

Photobiological hydrogen production from the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in sol-gel processed silica

Creator:: Dickson, David J.
Abstract:: Photobiological hydrogen production from live cells of the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in silica gel was investigated. Hydrogen is a dense energy carrier with potential to reduce dependence on fossil fuels, provided a renewable and sustainable means of production can be achieved. Under certain conditions, Synechocystis sp. PCC...
Resource Type:: Dissertation
Full Text:: . PCC 6803 Encapsulated in Sol-gel Processed Silica. Abstract approved: Roger L. Ely

Physiological, proteomic, and whole-genome transcriptional responses of Nitrosomonas europaea to heavy metals (Zn²⁺,Cd²⁺, Cu²⁺, and Hg²⁺) and cyanide : identification of heavy metals and cyanide stress response genes

Creator:: Park, Sunhwa
Abstract:: Nitrosomonas europaea (ATCC19718) participates in the biological removal of nitrogen from wastewater by oxidizing ammonia to nitrite, the first step in nitrification. This bacterium is sensitive to heavy metals (Zn²⁺, Cd²⁺, Cu²⁺, and Hg²⁺) and cyanide, compounds commonly encountered in wastewater treatment plants. Therefore, we characterized physiological and transcriptional responses...
Resource Type:: Dissertation
Full Text:: : Roger L. Ely Nitrosomonas europaea (ATCC19718) participates in the biological removal of

Sources of flow maldistribution in microreactor-assisted synthesis of ceria nanoparticles

Creator:: Tseng, Chih-Heng
Abstract:: Recent efforts show that microchannel technologies have much to offer the field of nanomanufacturing: the structuring of matter on the order of one billionth of a meter. During the synthesis of nanomaterials, microchannel reactors take advantage of large surface-to-volume ratios to accelerate heat and mass transport. This accelerated transport allows...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Brian K. Paul Recent efforts show that microchannel technologies have much to offer the

Arc distribution and motion during the vacuum arc remelting process as detected with a magnetostatic approach

Creator:: Woodside, Rigel
Abstract:: Currently, the temporal arc distribution across the ingot during the vacuum arc remelting (VAR) process is not a known or monitored parameter. It is has previously been shown that arcs can spatially constrict during VAR, and this constriction can lead to undesired defects in the material. Additionally, correct accounting for...
Resource Type:: Dissertation
Full Text:: Process As Detected with a Magnetostatic Approach Abstract approved: Paul E. King Currently

Magmatic processes at mid-ocean ridges : evidence from lavas and melt inclusions from the Southeast Indian Ridge, the Endeavour Segment of the Juan de Fuca Ridge, and the northern East Pacific Rise

Creator:: Sours-Page, Rachel E.
Abstract:: Magmatic processes control the chemical compositions of all lavas erupted at mid-ocean ridges. In this thesis, I present studies of magmatic processes on three different mid-ocean ridges to determine which processes are in action and to what extent each has affected the chemistry of mid-ocean ridge basalts at each location....
Resource Type:: Dissertation

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Creator:: Kray, Roger LeRoy
Abstract:: Crossmatings were accomplished among three semi-closed lines within a population of pigs, for the purpose of investigating effects of crossbreeding on reproductive traits. Two of the lines were purebred (Berkshire and Yorkshire); the third line ("Composite") consisted of descendants from inter se matings among offspring of crosses of the Berkshire...
Resource Type:: Dissertation
Full Text:: AN A9STRACT OF TUE TnSIS OF Roger LeRoy Kray for the degree

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Creator:: Schantz, Merilynn C.
Abstract:: Biological plant invasions are diminishing the ecological integrity and function of ecosystems worldwide. A primary example of this is in the Great Basin of the United States, where invasive annual grasses, like cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae L. Nevski), are dominating many sagebrush-steppe ecosystems. In these invaded...
Resource Type:: Dissertation
Full Text:: Roger L. Sheley Michael M. Borman Biological plant invasions are diminishing the ecological

Effects of prescribed cattle grazing on reforestation in Oregon's southern Cascades

Creator:: Karl, Michael G.
Abstract:: Reforesting harvested lands in southwestern Oregon has been difficult because of low rainfall, high evaporative demand, and competitive understory vegetation. Herbicides have been a preferred method to control competing vegetation but herbicide use on federal lands was curtailed in 1984. As a result, interest in livestock grazing as a vegetation...
Resource Type:: Dissertation
Full Text:: Reforestation in Oregon's Southern Cascades Abstract approved: Redacted for Privacy Paul S. Doescher

A partial characterization of high and low molecular weight immunoglobulin in rainbow trout (Salmo gairdneri)

Creator:: O'Leary, Patrick John
Resource Type:: Dissertation
Full Text:: . Infektionskr. Abt. I. Orig. 86:160. 14. Mosier, D., I. Zitron, J. Monk, A. Ahmed, I. Scher, and W. Paul. 1977

ScholarsArchive@OSU

Directing ecological succession : the role of competition in restoring semi-arid grasslands dominated by invasive plants

Photobiological hydrogen production from the cyanobacterium Synechocystis sp. PCC 6803 encapsulated in sol-gel processed silica

Physiological, proteomic, and whole-genome transcriptional responses of Nitrosomonas europaea to heavy metals (Zn²⁺,Cd²⁺, Cu²⁺, and Hg²⁺) and cyanide : identification of heavy metals and cyanide stress response genes

Sources of flow maldistribution in microreactor-assisted synthesis of ceria nanoparticles

Arc distribution and motion during the vacuum arc remelting process as detected with a magnetostatic approach

Magmatic processes at mid-ocean ridges : evidence from lavas and melt inclusions from the Southeast Indian Ridge, the Endeavour Segment of the Juan de Fuca Ridge, and the northern East Pacific Rise

Association of genetically determined polymorphic blood components with prolificacies of purebred and crossbred pigs

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Effects of prescribed cattle grazing on reforestation in Oregon's southern Cascades

A partial characterization of high and low molecular weight immunoglobulin in rainbow trout (Salmo gairdneri)

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