Index Catalog // ScholarsArchive@OSU

Geostatistical applications to salinity mapping and simulated reclamation

Creator:: Al-Taher, Mohamad A.
Abstract:: Geostatistical methods were used to find efficient and accurate means for salinity assessment using regionalized random variables and limited sampling. The random variables selected, sodium absorption ratio (SAR), electrical conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles. Ordinary kriging and co-kriging...
Resource Type:: Dissertation
Full Text:: conductivity (EC), and clay content were measured on samples taken over an area of fifteen square miles

Surface Characterization of Engineered Biomaterials

Creator:: Faase, Ryan A.
Abstract:: The work presented in this dissertation highlights the various techniques available to characterize the increasingly complex surfaces of engineered biomaterials. The methods used range from the simple measurement of a contact angle with a smartphone to a complex synchrotron technique like near edge x-ray absorption fine structure (NEXAFS) spectroscopy to...
Resource Type:: Dissertation

New development of beta-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties, New development of β-chitosan from jumbo squid pens (Dosidicus gigas) and its structural, physicochemical, and biological properties

Creator:: Jung, Jooyeoun
Abstract:: β-chitin/chitosan extracted from newly utilized jumbo squid (Dosidicus gigas) pens were investigated in respect to their physicochemical properties, polymeric structures, deacetylation and depolymerization characteristics, and antioxidant and antibacterial activities. These functional properties were further compared with α-chitin/chitosan prepared from shrimp shells. Due to the low mineral content (< 1%) and...
Resource Type:: Dissertation
Full Text:: microbial deproteination and decalcification. Applied Microbiology and Biotechnology 2008, 79 (4), 687-697

Factors associated with stand establishment and subsequent grain yield of seven wheat cultivars and selected progeny (Triticum aestivum, L em thell) when grown under three diverse environments

Creator:: Vahabian, Mohammad Ali
Resource Type:: Dissertation
Full Text:: , crown depth, adenosine phosphate (ATP) and adenylate energy charge (EC) on stand establish- ment

Computational improvements to Benders decomposition for generalized fixed charge problems

Creator:: Battilega, John Anthony
Abstract:: A computationally efficient algorithm has been developed for determining exact or approximate solutions for large scale generalized fixed charge problems. This algorithm is based on a relaxation of the Benders decomposition procedure, combined with a linear mixed integer programming (MIP) algorithm specifically designed to solve the problem associated with Benders...
Resource Type:: Dissertation

Effect of Plant Growth Regulator and Irrigation on Physiological and Harvest Maturity of Red Clover in Relation to Seed Quality

Creator:: Angsumalee, Duangporn
Abstract:: Red clover (Trifolium pratense L.) seed yield can be affected by plant growth regulators (PGR) and irrigation; however, the effects of these factors on physiological maturity (PM), harvest maturity (HM), and seed quality are unknown. The objectives of this study were to: 1) determine how irrigation and trinexapac-ethyl (TE, a...
Resource Type:: Dissertation
Full Text:: (CT), accelerated aging (AAT), and electrical conductivity (EC) tests in red clover seed affected by

Correlation of strain reactions of ring spot virus of stone fruits with prune dwarf, sour cherry yellows, and peach stunt symptoms

Creator:: Hartstirn, Walter
Resource Type:: Dissertation
Full Text:: results. Pulton (5, pp. 683-687), using the same four isolates eloyed in his extensive host range studies

Raman evidence for the structure of the hyponitrite ion

Creator:: Rauch, John Edward
Resource Type:: Dissertation
Full Text:: » p. 687-691) also made some approximate force constant calculations to show that C21l symmetry was

Resource allocation methods for quality-of-service provisioning in heterogeneous wireless networks

Creator:: Chakchouk, Nessrine
Abstract:: The increased use of mobile wireless devices that we have recently been witnessing, such as smartphones, tablets, e-readers, and WiFi enabled devices in general, is driving an unprecedented increase in the amount of data traffic. This fast market adoption of the wireless technology along with the tremendous success of multimedia...
Resource Type:: Dissertation

Independent effects of habitat loss and fragmentation on pollination : tropical forest fragmentation alters hummingbird movements and pollination dynamics

Creator:: Hadley, Adam S.
Abstract:: A growing body of work reveals that animal-mediated pollination is negatively affected by anthropogenic disturbance. Landscape-scale disturbance results in two often inter-related processes: (1) habitat loss, and (2) disruptions of habitat configuration (i.e. fragmentation). Understanding the relative effects of such processes is critical in designing effective management strategies to limit...
Resource Type:: Dissertation

The Formation of Astrophysical Dust

Creator:: Mauney, Christopher M.
Abstract:: The formation of carbonaceous and silicate precursor molecules to astrophysical dust grains is investigated. Using density functional theory (DFT) in combination with global optimization techniques, the ground-state binding energies of dust precursors are determined. These results are employed in atomistic nucleation theory (ANT) to predict the critical size and nucleation...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 2.6 Comparison of Cohesive energies Ec for selected clusters

Peak reconstruction of single particle mass spectrometry transient signals to recapture ion count and improve SNM ratio measurements

Creator:: Mannino, Mitchell
Abstract:: Quick and accurate measurements of nanoparticles have important applications in biology, environmental and non-proliferation areas. Calculation of isotopic ratios, particularly in special nuclear materials, has relied on integration of nanoparticle counts and limited the capability of counting minor isotopes. Rapid transient detection method of nanoparticles has demonstrated the effectiveness of...
Resource Type:: Dissertation

Isozymic and cytological studies on populations of the introduced bee species, Megachile (Eutricharaea) rotundata and M. (Eutricharaea) apicalis

Creator:: Chen, Xiaoshe
Abstract:: Thirteen New World populations of Megachile rotundata and M. apicalis and two Old World populations of M. rotundata were analyzed at 23 enzyme loci using cellulose acetate electrophoresis. Conventional and G- or C-banded karyotypes were also examined in these populations. The principal findings are (1) No differences were found in...
Resource Type:: Dissertation

New Insights into Mantle Dynamics from Helium Isotopes and Argon Geochronology

Creator:: Konrad, Kevin
Abstract:: Earth’s mantle extends to nearly 3000 km depth, comprises >80 % of Earth’s total volume, and has the largest influence on the primordial and radiogenic heat budget. Despite its importance, the structure and composition of the mantle is still debated. There are three primary models for Earth’s mantle structure that...
Resource Type:: Dissertation

Bone mineral and menstrual cycle status in competitive female athletes : longitudinal study

Creator:: Robinson, Tracey Leigh
Resource Type:: Dissertation
Full Text:: Redacted for Privacy gymnasts (EG) was significantly greater compared to the eumenorrheic controls (EC

Studies on 1-deoxy-D-xylulose 5-phosphate reductoisomerase from Synechocystis sp. PCC6803 : characterization of mutants and inhibitors

Creator:: Fernandes, Roberta P. M.
Abstract:: In recent years, the methyl erythritol phosphate (MEP) pathway to isoprenoids has been the subject of intensive research. The interest is because isoprenoids have important roles in many cellular processes essential for the survival of several pathogenic organisms, making the inhibition of this pathway an attractive target for the drug...
Resource Type:: Dissertation
Full Text:: hydroxymethylglutaryl-CoA synthase [EC 2.3.3.10]. The next step is a reduction of the thioester of HMG-CoA providing

Potential impacts of canola (Brassica napus L.) on vegetable seed production in the Willamette Valley of Oregon

Creator:: Quinn, Michael P.
Abstract:: In the Willamette Valley of Oregon, a combination of the need for rotational crops and an increased desire for biofuel production created interest in planting Brassica napus (canola). However, questions were raised arisen over the potential damage canola production could have on the preexisting Brassica vegetable seed industry. To address...
Resource Type:: Dissertation

Plastome phylogenomics in the genus Pinus using massively parallel sequencing technology

Creator:: Parks, Matthew Benjamin
Abstract:: This thesis summarizes work completed over the previous four years primarily focusing on chloroplast phylogenomic inquiry into the genus Pinus and related Pinaceae outgroups using next-generation sequencing on Illumina platforms. During the time of our work, Illumina sequence read lengths have essentially been limited to 25 to 100 base pairs,...
Resource Type:: Dissertation

Alternative greenhouse tomato production system

Creator:: Albahouh, Muhammed S.
Abstract:: The closed insulated pallet system (CIPS) was evaluated for growth, yield, and fruit quality of tomato genotypes with determinate growth habit. Plants were irrigated with several levels of sodium chloride (NaCl) salinized water. Tomato growth and yield were significantly greater in CIPS than in conventional surface-irrigated containers, regardless of irrigation...
Resource Type:: Dissertation
Full Text:: ) List of Figures (Continued) Figure Page 3.12. Electrical conductivity (EC) of root media at

Low-voltage data converters

Creator:: Meng, Qingdong
Abstract:: With the growing demand for portable/consumer electronics, such as digital audio/video (AV), the downscaling of device dimensions, which enables the integration of an increasing number of transistors in a single chip, is mandatory. This trend also continuously pushes the power supply voltage down to reduce the power consumption and improve...
Resource Type:: Dissertation

Eastern filbert blight in hazelnut (Corylus avellana): identification of new resistance sources and high resolution genetic and physical mapping of a resistance gene

Creator:: Sathuvalli, Vidyasagar R.
Abstract:: European hazelnut, Corylus avellana L., is the only economically important nut crop in the family Betulaceae. One of the threats to the hazelnut industry in the Pacific Northwest is the fungal disease eastern filbert blight (EFB) caused by the pyrenomycete Anisogramma anomala. Host genetic resistance to EFB identified in the...
Resource Type:: Dissertation
Full Text:: ss P la n t S p ec ie s P a th o g en R ef er en ce s 1 L 6 T IR -N B S -L

Characterizing Linkages Between the Climate, Cryosphere, and Impacts on Run-of-River Hydropower in Data-Sparse Mountain Environments

Creator:: Mosier, Thomas M.
Abstract:: In many regions of the world, a significant portion of the surface water originates in mountain headwaters where the timing and magnitude of streamflow is largely dictated by the seasonal storage of precipitation as snowpack and long-term storage as glaciers. Accumulation, persistence, and melt of snow and ice are functions...
Resource Type:: Dissertation

The influence of carotene levels in dairy cattle rations on reproductive behavior, feed utilization and other physiological processes

Creator:: Byers, John Harkness, 1918-
Resource Type:: Dissertation
Full Text:: P LATES III and IV ..CsaCeea.e,e.ea.,.a,C,.,eaeaeaea,sag,Ce,eC-a 37 PLATES V and VI a,C,ee..,ee.e

The synthesis and characterization of components for solid-state lithium cells : amorphous polyether-salt complexes, planar-sheet graphite fluorides, and layered organic

Creator:: Lemmon, John P.
Resource Type:: Dissertation
Full Text:: conductivities. Low-molecular-weight solvents with high dielectric constants such as ethylene carbonate (EC

The role of small mammals as dispersers of mycorrhizal fungal spores within variously managed forests and clearcuts

Creator:: McIntire, Patrick W.
Abstract:: Small-mammal community composition, microhabitat selection, and dispersal of mycorrhizal fungal spores were studied in southwestern Oregon. Sampled habitats exhibited structural variation resulting from silvicultural practices. In 1981, the effect of clearcut treatment on these phenomena was evaluated. In 1982, the effect of forest structure was studied. Discriminant function analysis (DFA)...
Resource Type:: Dissertation

Differential sensitivity of two common groundsel biotypes (Senecio vulgaris L.) to several s-triazine herbicides

Creator:: Radosevich, Steven R.
Abstract:: Studies were initiated to determine the response of two common groundsel biotypes (Senecio vulgaris L. ) to several s-triazine herbicides. Herbicides tested were: 2-chloro-4,6-bis(ethylamino)-striazine (simazine), 2-chloro-4-(ethylamino)-6-(isopropylamino)- s-triazine (atrazine) 2-(sec-butylamino)-4-(ethylamino)-6-methoxys- triazine (GS-14254), 2, 4-bis(isopropylamino)-6-methoxy-striazine (prometone), 2-(tert-butylamino)-4-(ethylamino)-6-methylthio- s-triazine (terbutryn), and 2, 4-bis(isopropylamino)-6- methylthio-s-triazine (prometryne). One biotype was much more susceptible than the...
Resource Type:: Dissertation
Full Text:: t (% o f ch ec k) 0 0 W if fi fe r't 74 ", g/ /7 ' .4 7 dr / /, e; ,// /:, 15 i

Deletions and Insertions of the Symbol 0 and Asymmetric/Unidirectional Error Control Codes for the L₁ Metric

Creator:: Alqwaifly, Nawaf
Abstract:: This work gives some theory and efficient design of binary block codes capable of controlling the deletions of the symbol “0” (referred to as 0-deletions) and/or the insertions of the symbol “0” (referred to as 0-insertions). This problem of controlling 0-deletions and/or 0-insertions (referred to as symmetric 0-errors) is shown...
Resource Type:: Dissertation

Treatment of autocorrelated disturbances in economic functions

Creator:: Fernandez, Jose Enrique
Resource Type:: Dissertation
Full Text:: 2 EC^U-) = P o- if j^i. If Y = Xp + u, and using the least squared method: £ = (X'XJ

The genetics of winterhardiness in barley : perspectives from genome-wide association mapping

Creator:: von Zitzewitz, Jarislav
Abstract:: Fall-planted barley makes the best use of available precipitation in the Pacific Northwest of the United States. This growth habit is also suitable to many other areas of the world. A prerequisite for production in most of these areas is tolerance of low temperature during the vegetative growth stages. Fall-planted...
Resource Type:: Dissertation

The free radical scavenging system in overcoming phytotoxicity and breaking dormancy

Creator:: Zhen, Liping
Abstract:: Hydrogen cyanamide (CY) induced earlier budbreak, more uniform and a higher percentage of budbreak in resting poplar (Populus alba x P. gradidentata, NC 5339) plants. However, it was phytotoxic to poplar when applied at 0.5 M or higher concentrations. Percent budbreak increased and percent dieback decreased when poplar plants were...
Resource Type:: Dissertation

Humpback Whale (Megaptera novaeangliae) Calling Behavior In Southeast Alaska : A Study In Acoustic Ecology And Noise

Creator:: Fournet, Michelle E. H.
Abstract:: Humpback whales (Megaptera novaeangliae) are a widely distributed baleen whale species, well known for their diverse acoustic behavior. On high-latitude foraging grounds, humpback whales produce a suite of non-song vocalizations (“calls”) in concert with foraging and social behavior. In this dissertation I investigated the role of calls in the acoustic...
Resource Type:: Dissertation

The physiological effect of posture on cycling

Creator:: al-Haboubi, Muhammad
Abstract:: The objective of this research was to investigate the physiological effects of body posture on cycling. The familiar positions of bicycle riding have been the touring posture (hands stretched on top handlebar) and the racing posture (hands bent at the elbow, with the back horizontal). However, a relatively new stance...
Resource Type:: Dissertation

Drug Discovery and Chemical Ecology Investigations of Specialized Metabolism in Tolypocladium and Paraisaria

Creator:: Tehan, Richard M.
Abstract:: Since the discovery of penicillin in 1928, the fungal kingdom has remained a fertile source for the discovery of new, biologically active, natural products. Further, as natural products continue to be discovered from fungi, a deeper understanding of the critical role of specialized metabolism in fungal ecology is afforded. The...
Resource Type:: Dissertation

An Empirical Analysis of the Impact of Climate-related Disasters on the Regional Economy

Creator:: Fouzia, Sultana Z.
Abstract:: The ongoing climate change has impacted the lives and livelihoods of people. A climate-related disaster acts as an exogenous shock to the economy that can have lingering effects over a larger region even if all the locations are not directly affected. Climate-related disasters do not follow the administrative boundaries. So,...
Resource Type:: Dissertation
Full Text:: ty p e V a ri a b le E m p lo y m en t W a ge D ir ec t In d ir ec t T ot al D ir ec

Stability of rainbow trout (Salmo gairdneri) muscle lysosomes

Creator:: Whiting, Richard Charles
Abstract:: Studies were conducted to determine the post-mortem stability of lysosomes in the white muscle of rainbow trout (Salmo gairdneri) and to determine whether lysosomal stability was related to rigor mortis and its subsequent dissolution. In addition, isolated lysosomes were subjected to different environments in an attempt to detect some of...
Resource Type:: Dissertation
Full Text:: . The cathepsins pre- sently recognized are: A (EC 3. 4. 2. -), Bl and B2 (EC 3. 4. 4. -), C

Ecohydrological mediation of water budget partitioning and time scales of subsurface flow in a seasonally semi-arid grassland

Creator:: Pangle, Luke A.
Abstract:: Understanding how the interactions and feedbacks between plant function, climate, and soils ultimately affects the terrestrial water balance and subsurface flow processes is major challenge in scientific hydrology. This dissertation summarizes the findings of a manipulative climate warming experiment, an observational field study that utilized stable-isotope tracers, and associated modeling...
Resource Type:: Dissertation

Influence of previous cattle and elk grazing on the subsequent diet quality and nutrient intake rate of cattle, deer, and elk grazing late-summer mixed-conifer rangelands

Creator:: Damiran, Daalkhaijav
Abstract:: Four studies were conducted on late-summer diet quality and quantity of cattle (Bos taurus), mule deer (Odocoileus hemionus hemionus), and elk (Cervus elaphus) in response to prior grazing by cattle and elk on mixed-conifer rangelands and on related research techniques. In our first study we assessed a photographic technique to...
Resource Type:: Dissertation
Full Text:: ; Spokane, WA: Wildlife Management Institute. 69:687-707. Beck, J. L., and J. M. Peek. 2005. Diet

The disease cycle and control of the dwarf bunt fungus Tilletia contraversa Kühn, in Union County, Oregon

Creator:: Fenwick, Harry Selwyn
Resource Type:: Dissertation
Full Text:: Festuca rubra. The host range was later 7 revised by Hard1on, et al., (17, pp.665-687) in 1954 to

Comparative gibberellin relationships in tall and dwarf peas (Pisum sativum L.)

Creator:: Anderson, James David
Abstract:: Experiments were performed to determine whether a direct correlation exists between the growth rates of tall and dwarf peas grown either in the light or in the dark and endogenous gibberellin (GA) content. Three separate but related experimental approaches were utilized: (1) the determination of possible qualitative and /or quantitative...
Resource Type:: Dissertation

Positive and negative regulators of adipocyte differentiation in primary culture

Creator:: Suryawan, Agus
Resource Type:: Dissertation

Characterization of Escherichia coli double-strand uracil-DNA glycosylase and analysis of uracil-initiated base excision DNA repair

Creator:: Sung, Jung-Suk
Abstract:: Escherichia coli double-strand uracil-DNA glycosylase (Dug) was purified to apparent homogeneity from bacteria that were defective in uracil-DNA glycosylase (Ung). After cloning the dug gene, recombinant Dug was overexpressed, purified, and characterized with respect to activity, substrate specificity, product DNA binding, and mechanism of action. Purified Dug excised both uracil...
Resource Type:: Dissertation
Full Text:: ....................................................................................................... 233 5.1.1 Comparison of Substrate Specificity of Dug on U/G and eC/G DNA

Climate-Smart Aquaculture: A Conceptual Framework for Evaluating Air-Breathing Fish for Sustainable Food Systems

Creator:: Ichien, Stephanie T.
Abstract:: The global demand for food is expected to double by 2050, presenting a need that is complicated by the many interrelated of pressures on the world’s natural resources from climate change, growing urban populations, and increasing development. As one of the fastest growing food production sectors, aquaculture is poised to...
Resource Type:: Dissertation

The effect of high carbohydrate, low fat diets on lipoprotein lipids, apoproteins, nutritional status and diabetic control in insulin dependent (Type I) diabetes mellitus

Creator:: Hollenbeck, Clarie
Abstract:: Recently, high carbohydrate diets were recommended for the treatment of diabetes mellitus. All aspects of these diets, however, have not been fully tested — particularly in insulin dependent diabetes mellitus (IDDM). The present study was designed to investigate the effects of high carbohydrate, low fat diets (HCLFD) on blood glucose...
Resource Type:: Dissertation

Solid phase synthesis of dynorphin analogues as probes of Kappa opioid receptors

Creator:: Story, Sandra Catherine
Resource Type:: Dissertation
Full Text:: inactivates the peptide. Tyri is liberated from dynorphin by aminopeptidase M (EC 3.4.11.2) (Marks et al

The development and analysis of sequence-based DNA markers in sunflower for DNA fingerprinting and candidate gene analysis

Creator:: Hongtrakul, Vipa
Abstract:: Molecular DNA markers have become widely used in all areas of genetic research. The objectives of this thesis were to develop polymorphic markers in sunflower and utilize the markers for genetic and candidate gene analyses. Amplified fragment length polymorphism (AFLP) markers were used to estimate genetic similarities and assess the...
Resource Type:: Dissertation

Dynamic mechanical analysis of wood and wood-based composites

Creator:: Gao, Hong
Abstract:: Wood and wood-based composites are being used in either new or more demanding applications. A means is needed to successfully analyze new materials and to predict their long-term performance. Two techniques, dynamic mechanical analysis (DMA) and time-temperature superposition (TTS) offer a means to accomplish this objective. The outcome of this...
Resource Type:: Dissertation
Full Text:: . Svensk Papperstidning, 72(21)687- 694. Back, E. L., and N. L. Salmen. 1982. Glass transitions of wood

Ascorbylation- the biological relevance of covalently bound ascorbic acid

Creator:: Kesinger, Nicholas G.
Abstract:: Ascorbic acid, or vitamin C, is well known as a co-factor for proline-hydroxylase and as an anti-oxidant. However, it is also capable of forming covalent bonds, particularly in the role of a nucleophile, henceforth termed 'ascorbylation'. The ascorbylation of electrophiles can occur under physiological conditions. Furthermore, there are a number...
Resource Type:: Dissertation

Environmental complex mixtures modify benzo[a]pyrene and dibenzo[a,l]pyrene-induced carcinogenesis

Creator:: Courter, Lauren A.
Abstract:: Human exposure to the carcinogenic polycyclic aromatic hydrocarbons (PAHs) benzo[a]pyrene (B[a]P) and dibenzo[a,l]pyrene (DB[a,l]P) is through environmental complex mixtures, such as urban dust particulate matter (UDPM) and diesel exhaust (DE), however the potency of these PAH within a mixture is not established. To determine the effect of these mixtures on...
Resource Type:: Dissertation

A continuum model of plant root growth

Creator:: Feng, Yongsheng
Abstract:: The continuum theory provides a framework in which the growth of a plant root as a dynamic process involving interactions among transport of water and solute, cell division, and the subsequent cell elongation can be described. A plant root is modeled as a one-dimensional, multi-phase, mathematical continuum. The network of...
Resource Type:: Dissertation

Floral and vegetative development in Dactylis glomerata as influenced by different temperature levels and durations

Creator:: Von Amsberg, Hans Joachim
Abstract:: Growth chamber and field experiments were conducted to investigate the effects of different temperature levels and durations on floral induction and vegetative growth in orchardgrass. Propagules of two clones, XLI-8 (clone R) and MID-5 (clone 0), from the synthetic variety Pennlate, were used in all experiments. Clone R plants were...
Resource Type:: Dissertation

Microstructural characterization of YBa₂Cu₃O₇₋₈ thin films with time differential perturbed angular correlation

Creator:: Tom, Dennis W.
Resource Type:: Dissertation

The relative activity of the cellulase enzyme system of Trichoderma reesei with native and modified cellulosic substrates

Creator:: Liaw, Ean-Tun
Resource Type:: Dissertation
Full Text:: ) 1,4-B-D-glucan glucanohydrolase (endoglucanase or EG; EC 3.2.1.4), (H) 1,4-B-D-glucan

Vitamin B-6 and pyrimidine deoxynucleoside metabolism in the rat

Creator:: Jensen, Christine May
Abstract:: Serine transhydroxymethylase (STHM), a pyridoxal 5'- phosphate requiring enzyme is indirectly involved in pyrimidine deoxynucleotide metabolism. A decrease in the activity of this enzyme could lead to altered deoxycytidine (dC) metabolism. This study was undertaken to determine if a vitamin B-6 deficiency affects dC metabolism. The effect of a vitamin...
Resource Type:: Dissertation
Full Text:: enzyme, serine transhydroymethylase (STHM) (EC 2.1.2.1.) (Blakley, 1955), is suspected of being the

Hydrological and biogeochemical dynamics of nitrate production and removal at the stream – ground water interface

Creator:: Zarnetske, Jay P.
Abstract:: The feedbacks between hydrology and biogeochemical cycling of nitrogen (N) are of critical importance to global bioavailable N budgets. Human activities are dramatically increasing the amount of bioavailable N in the biosphere, which is causing increasingly frequent and severe impacts on ecosystems and human welfare. Streams are important features in...
Resource Type:: Dissertation

Calcium dependent proteinase (calpain) and muscle protein degradation : molecular approach

Creator:: Alyan, Mohammad Atta
Resource Type:: Dissertation

The role of the homeodomain transcription factor Pitx2 in regulating skeletal muscle precursor migration and higher order muscle assembly

Creator:: Campbell, Adam L.
Abstract:: Cells of the ventrolateral dermomyotome delaminate and migrate into the limb buds where they give rise to all muscles of the limbs. The migratory cells proliferate and form myoblasts, which withdraw from the cell cycle to become terminally differentiated myocytes. The regulatory mechanisms that control the later steps of this...
Resource Type:: Dissertation
Full Text:: signaling machines. Cell 110: 673-687. 20. Zaidel-Bar R, Milo R, Kam Z, Geiger B (2007) A paxillin

Analysis and modeling of electrically long MESFETS and coupled schottky lines

Creator:: Mohammed, Ahmed Sarhan
Abstract:: The properties of linear active coupled lines consisting of electrically long GaAs MESFET structures are investigated for possible applications as traveling-wave broad-band amplifiers. In addition, the nonlinear coupled Schottky lines are studied for applications as voltage tunable circuit elements. The analysis of the general active asymmetric coupled transmission lines in...
Resource Type:: Dissertation
Full Text:: length. E The electric field. Ec The characteristic value of the electric field. It depends on the

Pollen profiles from Southeastern Alaska

Creator:: Heusser, Calvin J.
Resource Type:: Dissertation
Full Text:: PROFII'BS FROM SOUTHEASTERN ALA.SKA The ec~enoe ot pollen analyaia on the •orth American continent haa

The successful teacher in technical education : the preparation of the successful teacher

Creator:: Storm, George, 1923-
Abstract:: The purpose of this study was to assist the development of an improved technical teacher education program. Specifically, the project sought to determine what, if any, factors in the backgrounds of successful technical teachers may have accounted for their success in teaching. To provide information to this end, the investigation...
Resource Type:: Dissertation

Characteristics of two noncarotenogenic light sensitive mutants of Scenedesmus obliquus strain D₃

Creator:: Harvey, Geoffrey W.
Abstract:: Two light sensitive mutants of the green alga Scenedesmus obliquus strain D₃ have been characterized. The photodynamic nature of their sensitivity has been established, the subchloroplast site of photodamage has been investigated, and their noncarotenogenic character has been verified. The two mutants possess several similarities, although mutant L. S. -41...
Resource Type:: Dissertation

Student/school counselor ratios and school attendance rates : review of literature and a correlational study

Creator:: Zimchek, Victor Charles
Abstract:: School attendance is perceived as a critical issue in today’s primary and secondary educational systems. This manuscript reviews literature that speaks to the complexity of issues related to truancy and then posits that many of the interventions typically recommended to address truancy are ones that school counselors already provide or...
Resource Type:: Dissertation
Full Text:: labor. Retrieved February 16, 2008, from http://books.google.com/books?id=KN9JAAAAMAAJ&prints ec

Polargraphy in glacial acetic acid

Creator:: Bird, Floyd Weston
Resource Type:: Dissertation

Determination of the vibrational lifetime of carbon monoxide by the spectrophone method

Creator:: Turrell, George Charles
Resource Type:: Dissertation

Transboundary river floods : vulnerability of continents, international river basins and countries

Creator:: Bakker, Marloes H. N.
Abstract:: Floods are the most frequent and damaging of all types of natural disasters and annually affect the lives of millions all over the globe. However, researchers seem to have overlooked the fact that floods do not recognize national boundaries. Therefore, the phenomena of shared, or transboundary floods occurring in international...
Resource Type:: Dissertation
Full Text:: million individuals , and caused 687 billion US dollars of damage. Almost one tenth, 175 of the 1760, of

Regulation of adipose stromal-vascular cell differentiation in culture

Creator:: Akanbi, Kamil Agbolade
Abstract:: Primary cultures of stromal-vascular (S-V) cells from adipose tissue were used to investigate the regulation of preadipocyte development. Differentiation of S-V cells was found to be under hormonal control. Insulin and glucocorticoids are essential for S-V cell differentiation in culture. S-V cells from both newborn and mature pig adipose tissue...
Resource Type:: Dissertation
Full Text:: dehydrogenase (GPDH; EC 1.1.1.8), a marker enzyme for adipocyte differentiation. HC (500 ng/ml) alone

Optical, electronic, and thermodynamic properties of layered mixed anion compounds

Creator:: Vielma, Jason Michael
Abstract:: Mixed anion compounds that form ZrCuSiAs-type crystal structures exhibit remarkable properties such as superconductivity at low temperatures, hole conduction with optical transparency in the visible region, and exciton absorption at room temperature. In this thesis, properties of a selected group of materials out of the very large set of mixed...
Resource Type:: Dissertation

The biology of two species of Echinorhynchus (Acanthocephala) from marine fishes in Oregon

Creator:: Miller, Richard Leo
Resource Type:: Dissertation
Full Text:: eggs of Echinorhynchus lageniformis collected from 10 Platichthys stellatus and of Ec

Neural regulation of immunity in teleosts

Creator:: Flory, Craig M.
Abstract:: It has long been observed that stress can increase our susceptibility to infectious diseases and cancers. Recent experimental evidence suggests that this increased susceptibility is due to suppression of immunity. A variety of neuroendocrine products are released during periods of stress, and a large number of these are now known...
Resource Type:: Dissertation
Full Text:: detection (HPLC-EC). Tissue sample preparation and HPLC-EC were according to the method of Trombly et al

Genetic patterns of demography and diversity in eastern North Pacific rockfishes (genus Sebastes)

Creator:: Johansson, Mattias L.
Abstract:: The 100 North Pacific rockfish species in the genus Sebastes are highly diverse. Rockfishes fertilize their eggs internally and release swimming larvae. Complex courting behaviors may allow female rockfish to be selective about their mates and may promote and maintain speciation. In this study, I applied genetic techniques to survey...
Resource Type:: Dissertation

Biology of sweet cherry powdery mildew

Creator:: Calabro, Jill M.
Abstract:: The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...
Resource Type:: Dissertation

Elevated ceramide levels contribute to the age-associated decline in vascular endothelial nitric oxide : pharmacologic administration of lipoic acid partially restores function

Creator:: Smith, Anthony R.
Abstract:: The vascular endothelium is a single cell layer that lines the lumen of the entire vasculature. It is the site of synthesis of nitric oxide (NO), a vasodilatory compound synthesized by endothelial nitric oxide synthase (eNOS). NO causes intracellular calcium sequestration of the vascular smooth muscle cells, relaxing and dilating...
Resource Type:: Dissertation

Traditional ecological knowledge to develop and maintain fire regimes in northwestern California, Klamath-Siskiyou bioregion : management and restoration of culturally significant habitats

Creator:: Lake, Frank K.
Abstract:: The use of Native American fire regimes evolved in the Klamath-Siskiyou bioregion over millennia. A mixture of Native American and Euro-American socio-cultural management has developed from adaptations to climate, topography, ecological processes, and land use practices. This research incorporates Traditional Ecological Knowledge (TEK) to partially examine the role of tribal...
Resource Type:: Dissertation

Effects of flooding on peach, apple, quince and several pear species

Creator:: Andersen, Peter C.
Abstract:: A series of experiments was designed to investigate differential flood-tolerance and the phenomenon of flood-induced stomatal closure of several fruit tree species. The first two experiments were conducted with potted plants submerged outdoors 5-10 cm above the soil line. Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion rate...
Resource Type:: Dissertation

DNA binding and beyond : an investigation of proteins involved in PAH-induced carcinogesesis

Creator:: Hooven, Louisa Ada
Abstract:: Exposure to polycyclic aromatic hydrocarbons such as benzo[a]pyrene (B[a]P) has been determined to be a risk factor for various forms of human cancer. PAH DNA adducts have been shown to cause mutations, but carcinogenesis is also accompanied by alterations in gene expression. Inhibiting individual cytochrome P450s could clarify the interaction...
Resource Type:: Dissertation

Fish assemblage organization in the Amazon River floodplain : species richness, spatial distribution and recruitment processes

Creator:: Petry, Paulo
Abstract:: The composition and distribution of fish assemblages was examined in a floodplain lake system in the Amazon basin. Quantitative samples were collected during the 1992-1993 flooding season at Marchantaria Island, Solimoes River. A total of 25,819 specimens representing 8 orders, 30 families, 101 genera and 139 species of fish were...
Resource Type:: Dissertation

Mulching to Manage Mummy Berry of Blueberry

Creator:: Florence, Jade
Abstract:: Monilinia vaccinii-corymbosi pseudosclerotia overwinter on the soil surface and produce apothecia in early spring, providing primary inoculum for Mummy Berry Disease of blueberry. Burial under 2.5 cm of soil or the absence of light have previously been identified as critical factors preventing the development of apothecia. Mulches were applied to...
Resource Type:: Dissertation

Community organization and succession in rocky intertidal surfgrass beds

Creator:: Turner, Teresa
Abstract:: Succession and organization of rocky intertidal zone surfgrass beds (Phyllospadix scouleri Hook) were examined experimentally at two sites on the Oregon coast. The interaction of three attributes of the plant -- high persistence, high preemption, and slow recovery -- strongly influences the organization of surfgrass beds. Permanent plots indicate that...
Resource Type:: Dissertation

Evidence for molecular diversity of Piscirickettsia salmonis

Creator:: Mauel, Michael J.
Resource Type:: Dissertation

Anatomy and pathology of leaf spots on English holly, Ilex aquifolium (Tourn.) L

Creator:: Herridge, Elizabeth Anne
Resource Type:: Dissertation

Gamma-gamma directional correlation study of barium-134

Creator:: Coleman, Lamar William
Abstract:: Gamma-gamma directional correlations were measured in Ba¹³⁴ at ten angles between 90 degrees and 180 degrees in ten degree increments using a scintillation spectrometer. The spectrometer which used NaI crystals, differential energy selection, and standard coincidence techniques was tested by measuring the directional correlation of the two cascade gamma rays...
Resource Type:: Dissertation

Economic feasibility of synchronization of estrus for selected beef cattle ranches

Creator:: Deal, Emit Bernard, 1941-
Resource Type:: Dissertation
Full Text:: ib ut io n of e st ro us a ff ec te d by s yn ch ro ni za tio n. (S ou rc e: fl R

Strategies for the development of sustainable agriculture in Bangladesh

Creator:: Islam, Md. Shahidul
Abstract:: The adoption of modem agricultural technologies in Bangladesh increases overall agricultural productivity and income primarily through the increase in cereal crop production. It, however, impedes the productivity of several other minor crops and fishes, widens the distribution of income between the rich and the poor, exploits resources and obstructs the...
Resource Type:: Dissertation

Use of radiation resistant organism as a protectant from lethal effects of irradiation in mice

Creator:: Kilbourn, Joan Priscilla Payne
Resource Type:: Dissertation
Full Text:: ; 529; 530; 531; 565; 631; 669; 677; 687; 713; 828; 839; 841) 2( 2 1Ami.noethyl

Conformational Consequences: Calcium Regulates the Association Between Dysferlin C2A & PI(4,5)P2

Creator:: Otto, Shauna C.
Abstract:: Dysferlin is a ∼230 kDa terminally anchored membrane protein that is ubiquitously expressed, but is particularly enriched in skeletal and cardiac muscle tissue. Mutations covering the length of the protein have been linked to muscle wasting diseases including limb-girdle muscular dystrophy and Myoshi myopathy. Dysferlin has been shown to play...
Resource Type:: Dissertation

Simultaneous beta/gamma digital spectroscopy

Creator:: Farsoni, Abdollah T.
Abstract:: A state-of-the-art radiation detection system for simultaneous spectroscopy of beta-particles and gamma-rays has been developed. The system utilizes a triplelayer phoswich detector and a customized Digital Pulse Processor (DPP) built in our laboratory. The DPP board was designed to digitally capture the analog signal pulses and, following several digital preprocessing...
Resource Type:: Dissertation

Development of the simplified method to evaluate dynamic mechanical analysis data on asphalt-aggregate mixtures

Creator:: Ab-Wahab, Yunus Bin
Abstract:: Testing of asphalt binders and asphalt-aggregate mixtures using dynamic mechanical analysis is becoming popular with improvements in high-speed computers, precision equipment, and computer software. Researchers are trying to describe the behavior of asphalt binders and asphalt-aggregate mixtures in terms of their time- and temperature-dependent linear viscoelastic behavior. The objectives of...
Resource Type:: Dissertation

Vibrational and reorientational lifetimes in liquids determined by Raman spectroscopy

Creator:: Morgan, Larry G.
Abstract:: Studies of anisotropic and isotropic Raman line shape yield information about the rotational motion (rotational correlation function) and non-reorientational (vibrational) lifetimes. The rotational motion of carbon disulfide has been studied previously by the techniques of Raman spectroscopy (6, 43), Rayleigh scattering (43, 46) and direct measurement (47). This work was...
Resource Type:: Dissertation

Construction of Anomaly Scores and Probabilities using Random Sampling : A New Score, Efficient Computation, and Threshold Selection.

Creator:: Zongo, Kalbi F.
Abstract:: Anomaly detection is the task of identifying observations (points) that differ from the majority of other points, which requires some measure of difference, or distance. Many anomaly detection methods rely on “implicit distance” measures: rather than directly calculating an explicitly defined distance, these approaches quantify a point’s “abnormality” by examining...
Resource Type:: Dissertation

Nutritional regulation of adipocyte differentiation in animals

Creator:: Brandebourg, Terry
Abstract:: The incidence of obesity has increased in the U.S. until an obesity epidemic now exists. American consumers are acutely aware of the consequences of obesity and are increasingly associating the consumption of high-fat foods with having a negative impact upon their health. This has in turn forced producers to grow...
Resource Type:: Dissertation

Essays in international economics

Creator:: Torosyan, Karine
Abstract:: This dissertation consists of two papers on International Trade topics. The first paper addresses the development of trade patterns between countries in transition and developed economies. The second paper focuses on the nonparametric estimation of the Knowledge-Capital model of multinationals. The first paper provides a framework for understanding patterns of...
Resource Type:: Dissertation

Genesis of the El Salvador porphyry copper deposit, Chile and distribution of epithermal alteration at Lassen Peak, California

Creator:: Lee, Robert G. (Robert George)
Abstract:: The El Salvador porphyry copper deposit in the Indio Muerto district of northern Chile has been geologically investigated for more than 60 years and provides one of the best bases for understanding similar environments of ore formation elsewhere in the world. Fourteen new zircon U/Pb isotopic ages obtained via in...
Resource Type:: Dissertation

Hydrocortisone permeation study using a synthetic membrane, mouse skin and an epiderm cultured skin, Preparation of orally disintegrating tablets of melatonin and acetaminophen, Pharmacokinetics of terbinafine in penguins

Creator:: Le, Hang Thi
Abstract:: The first project of this thesis is an in vitro study. This study was performed with 8 hydrocortisone topical products on the market for the purpose of comparing one Tec Lab product, a Corticool gel, to the other seven common products on the market. The permeation of these products was...
Resource Type:: Dissertation

Tsunami Loading on Coastal Infrastructure

Creator:: Xie, Zhongliang
Abstract:: The safety of coastal infrastructure has been a concern after the Indian Ocean Tsunami in 2004 and the Great East Japan Tsunami in 2011. The western coast of the United States is also exposed to tsunami hazards due to the Cascadia subduction zone. Therefore, it is critical to design coastal...
Resource Type:: Dissertation

DHA and Low-fat Low-cholesterol Diets as Treatment Strategies for Nonalcoholic Fatty Liver Disease

Creator:: Lytle, Kelli Anne
Abstract:: Nonalcoholic fatty liver disease (NAFLD) is characterized by the accumulation of excess neutral lipids within the parenchymal cells of the liver. The primary etiology is diet-induced and most often exists as a comorbidity with obesity, metabolic syndrome, and/or Type 2 Diabetes. The development of excess liver lipid can be self-limiting...
Resource Type:: Dissertation

Microcomputer controlled chemical and radiochemical separations and analysis

Creator:: Bennett, Casey Wayne
Abstract:: An automated radiochemical flow analysis (ARFA) system was developed which integrates chemical and radiochemical techniques into one system through the use of a microcomputer. The operator, through the microcomputer, controls valves and pumps to transfer sample and reagent solutions to counting loops, ion exchange columns and holdup reservoirs. A Ge(Li)...
Resource Type:: Dissertation

Development of complex perovskite dielectric ceramics for high temperature capacitor applications

Creator:: Raengthon, Natthaphon
Abstract:: Dielectric ceramics designed for capacitor applications for use in extreme environments, such as high temperatures, high voltages, or high-pressure environments, are in great demand. Existing capacitor technology fails to perform within these extreme conditions or such environments. The development of new dielectric ceramic materials for high temperature capacitor applications is...
Resource Type:: Dissertation

The effects of whole body vibration on the neuromuscular system

Creator:: Hong, Junggi
Abstract:: Recently, changes in human performance following whole-body vibration (WBV) training have been attributed to enhanced neuromuscular function. However, the exact neural and muscular mechanisms responsible for these changes remain less understood. The purpose of this study was to evaluate the acute and chronic effects of whole body vibration on the...
Resource Type:: Dissertation

The physiology ecology and run diversity of adult Pacific lamprey, Entosphenus tridentatus, during the freshwater spawning migration

Creator:: Clemens, Benjamin J.
Abstract:: Pacific lamprey, Entosphenus tridentatus, have shown recent and rapid declines in abundance. These anadromous fish return to streams where they mature, spawn and die. It has been inferred that Pacific lamprey enter freshwater and reside for ~ 1 year before spawning. This long exposure to the freshwater environment may affect...
Resource Type:: Dissertation
Full Text:: morphological data. Copeia: 687-703. 14 Helfman, G. S., G. B. Collette, D. E. Facey, B. W. Bowen

Transformative Pedagogies of Voice: Creating the Conditions for Voice in Bilingual Students' Writing

Creator:: Sandstead, Martha Garrett
Abstract:: For many young bilingual students in school settings, demands of curricula and standardized assessments take precedence over writing pedagogies that invite and welcome students’ identities and languages into their writing. Pedagogies of voice are a means of providing culturally and linguistically responsive instruction that support bilingual students learning to write...
Resource Type:: Dissertation

Isotopic exchange reactions in liquid hydrogen sulfide

Creator:: Mickelsen, John Raymond
Resource Type:: Dissertation

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