Digital Commons Network^™

Membrane Filter Method For Enumeration Of Acinetobacter Calcoaceticus From Environmental Waters, Steven J. Lacroix, Victor J. Cabelli

Past Departments Faculty Publications (CELS)

A membrane filter method was developed and evaluated for the quantitative recovery of Acinetobacter calcoaceticus from environmental waters. The procedure utilized a mineral medium, with sodium acetate and potassium nitrate as the carbon and nitrogen sources, respectively. Formic acid was included to enhance the recovery of A. calcoaceticus and to inhibit background growth. The medium was incubated for 46 h at 30°C, after which fermentation and cytochrome oxidase tests were performed on the colonies as they appeared on the membrane. Background microbial growth decreased on the average by 1.77 orders of magnitude. An essentially quantitative recovery relative to that on …

The Monitoring Of Clostridium Perfringens Spore Density In Bottom Sediments And It's Applications, David J. Emerson

Open Access Master's Theses

Clostridium perfringens is an anaerobic, spore-forming bacterium that is consistently associated with human fecal wastes. Two extraction-separation procedures were developed for use in conjunction with the mCP membrane filtration method for the enumeration of C. perfringens spores in bottom sediments. In the simpler of the two procedures a distilled water suspension of the sediment sample is pulse sonicated for 10 seconds and allowed to settle. Portions of the supernatant are removed and assayed by the mCP membrane filtration method. This procedure is recommended for general usage. A more complicated procedure using a two-phase separation system was also developed for use …

Bacterivorous Flagellates In Marine Waters (Rhode Island, Nanoplankton), Paul Graham Davis

Open Access Dissertations

No abstract provided.

Studies On The Nonenzymatic Glycosylation Of Human Serum Albumin: In Vitro And In Vivo, Joseph Chester Urbanowski

Open Access Dissertations

No abstract provided.

Age Related Changes In The Induction Of Hepatic Mixed-Function Monooxygenase System In Miniature Pigs: Effects Of Pentachloroanisole, Pentachlorophenol And Phenobarbital, Alan Paul Agins

Open Access Dissertations

Pentachloroanisole (PCA), an environmental degradation product of the biocide pentachlorophenol (PCP), has been detected in the food chain. The metabolic fate of PCA was examined in miniature pig hepatic microsomes, in vitro. The compound was shown to be a substrate for a cytochrome P450-dependent demethylation reaction, which results in the regeneration of the parent compound, PCP. A disproportionately large increase in PCA demethylase activity (PCADM) following pretreatment with phenobarbital suggests that the compound is preferentially metabolized by specific-inducible form(s) of cytochrome P450.

A comparison of the effects of PCA and purified PCP on the hepatic MFO system of miniature pigs …

Uri Graduate School Course Catalog 1982-1983, University Of Rhode Island

URI Course Catalogs Archive

This is a digitized, downloadable version of the University of Rhode Island course catalog.

Uri Undergraduate Course Catalog 1982-1983, University Of Rhode Island

URI Course Catalogs Archive

This is a digitized, downloadable version of the University of Rhode Island course catalog.

Patterns And Rates Of Dna Synthesis And Cell Division In Marine Dinoflagellates, Deneb Karentz

Open Access Dissertations

No abstract provided.

A Study Of The Effect Of Host Factors On The Behavior Of Pathogenic Mucorales, Julia Elizabeth Blazek

Open Access Dissertations

No abstract provided.

Nutrient Level In Saudi Arabia Wheat Flour, Abdulrhaman Al-Khalifah

Open Access Master's Theses

The chemical composition and protein quality of four varieties of wheat flour grown in Saudi Arabia (Rice Mexi-Pak, Red Mexi-Pak, Lugemi, and Moaeah), and one type of home bread (Korsan) made from Moaeah were evaluated. Analysis performed included proximate analysis, thiamine, riboflavin, iron, amino acid composition and protein efficiency ratio (PER). Protein and iron were higher in Moaeah and Lugemi. The protein quality assessed by PER was higkest for Rice Mexi-Pak and lowest for Korsan, the cooked product. Chemical scores based on the essential amino acid content of the proteins were calculated; lysine and/or methionine was the limiting amino acid …

The Synthesis Of Lysoliponucleotide Analogs: A New Class Of Potential Anticancer Agents, Timothy Paul Wunz

Open Access Dissertations

No abstract provided.

Androgen Biosynthesis In The Testis, Mary A. Acciardi

Open Access Dissertations

The kinetic parameters of testicular steroid synthesizing enzymes involved in the Δ₄ and Δ₅ pathway s for testosterone production were examined in four species. Testis microsomes were prepared as a source of steroidogenic enzymes. Radiolabeled steroid-intermediates were used as substrates and products were separated by thin layer chromatography. Michaelis constants, (k_0.5), and V_max values were determined for 3 B-Hydroxysteroid oxidoreductase (EC 1.1.1.145), 17α-Hydroxylase (EC 1.14.99.9) and C₁₇-C₂₀ Lyase reactions using Δ₄ and Δ₅ substrates.

The purpose of the study was to develop a kinetic model for predicting the predominant steroidogenic …

A Case Study On The Development Of Social Indicators Model: The Assessment Of The Effects Of Italy's Membership In The Eec On The Quality Of Life, Lia T. Vasconcelos

Open Access Master's Theses

The primary objective of this study is to develop a framework for a social indicators model which can characterize the quality of life at the level of a nation. Up to a certain extent, the development of such a model is dependent upon the particular application envisaged. For the purposes of illustration, the country of Italy was chosen for the application of the general methodology. The assessment focuses on the impact on the quality of life in Italy resulting from membership on the European Economic Community (EEC).

Fat Dispersion Mechanisms In Proteinaceous And Farinaceous Matrices, Demetrios Kazantzis

Open Access Dissertations

No abstract provided.

Bioaccumulation And Bioconversion Of Dietary Labeled Fatty Acids In The Short Food Chain: Rice Bran To Artemia To Rainbow Trout And Winter Flounder, Paul Scott Schauer

Open Access Dissertations

No abstract provided.

An Investigation Of The Potential Of Soy Cellulose As A Tablet Disintegrant, Divyakant S. Desai

Open Access Master's Theses

Scanning Electron Micrographs of soy cellulose (Emcosoy) particles were studied to further the understanding of the morphology of the substance and thereby to increase the comprehension of how the excipient functions in tablet systems. Bulk swelling and water uptake were studied for Emcosoy, CLD II, corn Starch, and Ac-Di-Sol. Emcosoy had maximum swelling about 56%; followed by CLD II 49% and Ac-Di-Sol 9%. No swelling was observed in Corn Starch. An ideal disintegrant should perform uniformly in pH range of gastrointestinal tract in order to disintegrate the tablet. When Emcosoy and Ac-Di-Sol were tested against various pH values, there was …

An Investigation Of Some Factors Controlling Solute Transport Across Liquid Membranes, Andrea Panaggio

Open Access Dissertations

Accurate, precise, sensitive and reproducible experimental protocols using high pressure liquid chromatographic assay techniques (HPLC) have of solutes across liquid membranes. A simple model, previously developed by Rhodes and co-workers, used to describe the kinetics of solute transport across liquid membranes was evaluated and some formulation aspects of emulsions for use as liquid membranes were studied.

The removal of solutes from an external aqueous phase by a liquid membrane was found to be influenced by a number of factors including initial solute concentration, pH of the external aqueous phase, and temperature of the system. As the initial concentration of solute …

Androgen Biosynthesis In The Testis: I. Kinetic Characterization Of The Steroidogenic Pathways In Guinea Pig, Rabbit, Dog And Rat Testis Microsomes. Ii. The Effect Of Ascorbic Acid On 3-B Hydroxysteroid: Nadoxidoreductase Activity In The Testis, Mary A. Acciardi

Open Access Dissertations

No abstract provided.

Supraoptimal Temperature Stress And Nitrogen Nutrition In Kentucky Bluegrass (Poa Pratensis L.), John Townley Law Jr.

Open Access Dissertations

No abstract provided.

Microbiological Effect Of Maillard Reaction Products, Hsing-Chen Chen

Open Access Dissertations

No abstract provided.

Investigations On Marine Diatom Resting Spores, Fred Wellington French Iii

Open Access Dissertations

No abstract provided.

The Dynamics Of Summer Phytoplankton Populations In Narragansett Bay (Rhode Island), Miles Jonathan Furnas

Open Access Dissertations

No abstract provided.

Child Maltreatment: A Critical Review Of The Literature And Intervention Programs, Richard Strean Solomon

Open Access Dissertations

No abstract provided.

The Effects Of Marginal Deficiencies Of Ascorbic Acid And Alpha-Tocopherol On The Natural Resistence And Immune Response Of Rainbow Trout (Salmo Gairdneri), Vicki Suzette Blazer

Open Access Dissertations

No abstract provided.

The Use Of Exogenous Digestive Enzymes In Shrimp Diets (Clam), Paul David Maugle

Open Access Dissertations

No abstract provided.

The One Hundred And Eighty-Fourth Report Of The Curricular Affairs Committee, University Of Rhode Island Faculty Senate

Faculty Senate Bills

No abstract provided.

The One Hundred And Eightieth Report Of The Curricular Affairs Committee, University Of Rhode Island Faculty Senate

Faculty Senate Bills

No abstract provided.

Toward The Marketing Of Seafood Harvested In New England, Daniel R. Kilty Ph.D

Marine Affairs Theses and Major Papers

In this study the author will concentrate on the marketing activitiesof the U.S. commercial fishing industry. The study will use examples from New England to illustrate various points covered in the study. Particular reference will be made to the geographic area of Southern New England and move specifically to Point Judith, Rhode Island and New Bedford, Massachusetts. The study is divided into two parts. Part I reviews the situation in the industry prior to 1976, the Fishery Conservation Management Act, theU.S./Canadian East Coast Fisheries Agreement and the American Fisheries Promotion Act. Part II applies the marketing mix to the industry …

The Rhode Island Quahogger: Candidate For The List Of Endangered Species?, James M. Korney

Marine Affairs Theses and Major Papers

It is the hypothesis of this paper that today the livelihood of the independent Narragansett Bay quahogger is faced with two potentially dangerous threats; water pollution in upper Narragansett Bay and the prospect of an expanding aquaculture industry in the lower bay. Unless the state of Rhode Island properly interprets and enforces existing state legislation to protect the quahoggers interests, his very livelihood will be jeoprodized. This paper will examine the legal, political, economic, and environmental affects of water pollution in upper Narragansett Bay and an expanding aquaculture industry in the lower bay in their relation to the Rhode Island …

The One Hundred And Seventieth Report Of The Curricular Affairs Committee-Revised, University Of Rhode Island Faculty Senate

Faculty Senate Bills

No abstract provided.