Index Catalog // ScholarsArchive@OSU

A comparative study of lowpass continuous-time delta-sigma modulators with pulse-shaped DACs

Creator:: Fang, Jie
Abstract:: Recently, continuous-time ΔΣ modulators are appearing increasingly often in both the literature and the marketplace due to their features of inherent antialiasing and relaxed requirements for opamp and so on. However, several nonideal factors such as clock jitter, excess loop delay, inter-symbol interference and so on, degrade the SNR performance...
Resource Type:: Masters Thesis
Full Text:: Equivalences between s-domain and z-domain loop filter for rectangular DAC

Oxidative desulfurization of dibenzothiophene with tert-butyl hydro peroxide in a photochemical micro-reactor

Creator:: Hebert, Eilleen M.
Abstract:: Sulfur content in fuels is an increasingly critical environmental issue. Hydrodesulfurization removes sulfur from hydrocarbons; however, further desulfurization is necessary in fuels. New methods are required. In this study, micro-scaled single phase oxidative desulfurization is explored. An ultraviolet light-assisted micro-reactor is introduced for desulfurization of dibenzothiophene. Dibenzothiophene is mixed with...
Resource Type:: Masters Thesis

A survey on continuous-time modulators : theory, designs and implementations

Creator:: Gao, Xiaoran
Abstract:: Recently, delta-sigma modulation has become a widely applied technique for high-performance analog-to-digital conversion of narrow-band signals. Most of the early designs used discrete-time structure for good accuracy and good linearity. The transfer functions are independent of the clock frequency. However, high unity-gain bandwidths of the opamps are required to satisfy...
Resource Type:: Masters Thesis
Full Text:: - hold XSh(t H(z) -. anon XDSl( Digital low-pass filter X (n) Down sampler X(t) f it Decimation flter

Using an indicator model to rank relative stock status of minor West Coast rockfish species

Creator:: Miller, Stacey D.
Abstract:: Quantitative assessments of many West coast rockfish stocks of both major and minor importance to commercial fisheries have shown varying declines in abundances. The population sizes of less-abundant, co-occurring unassessed species may also be declining. However, determining stock status of the many non-targeted, minor species with high levels of certainty...
Resource Type:: Capstone Project
Full Text:: 0 z cc O 0z E (.', E `I>, E >, E > M ,o 0 0 cD 0 CD o w :r(:) Z ti -6 .8m = co z m

Basic Concepts to Develop a Marine Pollution Monitoring Program at the Tijuana-Ensenada Corridor, Baja California, Mexico

Creator:: Alvarez-Vazquez, Hector
Abstract:: The development of a Marine Pollution Monitoring Program (MPMP), in any coastal area of the world, requires a precise knowledge of the functioning of the local ecosystem. Because of the differences found in every coastal ecosystem, it is important to recognize and characterize the reservoirs and significant environments that maintain...
Resource Type:: Capstone Project
Full Text:: sewage drained from the Oceanside and San Elijio California waste water treatment plants (Sanchez

Ecology of the northern subpopulation of northern anchovy (Engraulis mordax) in the California Current large marine ecosystem

Creator:: Litz, Marisa N. C.
Abstract:: Northern anchovy (Engraulis mordax) are a dominant forage fish in the California Current large marine ecosystem (CCLME). However, little is known about northern anchovy abundance, distribution, age structure, or population fluctuations relative to ocean conditions in the eastern boundary upwelling system off the U.S. West Coast. This thesis includes three...
Resource Type:: Masters Thesis
Full Text:: can change year-to-year depending on annual recruitment success (Rodriguez-Sanchez et al. 2002

Development of benthic habitat maps and GIS (Geographic Information System) modelling to support coastal zone management in Phu Quoc, Vietnam

Creator:: Nguyen, Vinh X.
Abstract:: Situated off the west coast of Vietnam in the Gulf of Thailand, Phu Quoc archipelago and its waters are well-known for their rich natural resources, especially the bounty of fishery resources. Under increasing pressure from the growing population, fishing, and tourism development, there is a strong need to formulate an...
Resource Type:: Capstone Project
Full Text:: (Figure 3). 12 Figure 4. Flowchart of DEM generation in Arc/Info (Z-value = Elevation in meters

ENSO impacts on pelagic ecosystems in the Eastern Pacific, with emphasis on fishery resources

Creator:: Alvial, Adolfo L.
Abstract:: Many new research and monitoring projects, developed or initiated during ENSO 1982-83, constituted detailed descriptions of changes in specific taxa or specific processes. However, only a few projects were opportunely started or continued as regional efforts in the eastern Pacific. For those reasons, the information obtained is difficult to compare....
Resource Type:: Capstone Project
Full Text:: THERMOCLINE o • . U2 OCEAN FLOOR ROMORIMMOUNNUMinanna ri9. Z. gem hew of 4 kelvin .x licratin (Wood et

Activation, incorporation and modification of capreomycidine during viomycin biosynthesis

Creator:: Fei, Xiaobo
Abstract:: Molecular genetic and enzymological techniques have been employed to study antibiotic biosynthesis. The nonproteinogenic amino acid capreomycidine is the signature residue found in the tuberactinomycin family of antitubercular peptide antibiotics and an important element of the pharmacophore. Recombinant VioG, a single module peptide synthetase from the viomycin gene cluster cloned...
Resource Type:: Masters Thesis
Full Text:: ; R1 = Z Capreomycin IB (2b): R = H; R1 = Z Capreomycin IIA (2c): R = OH; R1 = H Capreomycin IIB (2d

Composition of flavonoid phenolic polymers isolated from red wine during maceration and significance of flavan-3-ols in foods pertaining to biological activity

Creator:: Aron, Patricia M.
Abstract:: Representing the most common flavonoid consumed in the American diet, the flavanols and their polymeric condensation products, the proanthocyanidins, are regarded as functional ingredients in various beverages, whole and processed foods, herbal remedies and supplements. Their presence in food affects food quality parameters including astringency, bitterness, sourness, sweetness, salivary viscosity,...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

A comparative study of lowpass continuous-time delta-sigma modulators with pulse-shaped DACs

Oxidative desulfurization of dibenzothiophene with tert-butyl hydro peroxide in a photochemical micro-reactor

A survey on continuous-time modulators : theory, designs and implementations

Using an indicator model to rank relative stock status of minor West Coast rockfish species

Basic Concepts to Develop a Marine Pollution Monitoring Program at the Tijuana-Ensenada Corridor, Baja California, Mexico

Ecology of the northern subpopulation of northern anchovy (Engraulis mordax) in the California Current large marine ecosystem

Development of benthic habitat maps and GIS (Geographic Information System) modelling to support coastal zone management in Phu Quoc, Vietnam

ENSO impacts on pelagic ecosystems in the Eastern Pacific, with emphasis on fishery resources

Activation, incorporation and modification of capreomycidine during viomycin biosynthesis

Composition of flavonoid phenolic polymers isolated from red wine during maceration and significance of flavan-3-ols in foods pertaining to biological activity

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