Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

1996

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 52591 - 52620 of 62750

Full-Text Articles in Entire DC Network

Boundary Layer Turbulence And Sediment Transport In An Inter-Tidal Mudflat Channel., Lun Xu Jan 1996

Boundary Layer Turbulence And Sediment Transport In An Inter-Tidal Mudflat Channel., Lun Xu

LSU Historical Dissertations and Theses

Mudflats along the west coast of South Korea are influenced by high tidal ranges and strong winter monsoonal storms, and are drained by a network of incised channels. In a selected inter-tidal mudflat channel of Namyang Bay, seven levels of 3-D turbulent velocity data, five levels of water temperature data, and two levels of sediment concentration data were collected to analyze turbulent boundary layer flow with stratification. Using time series analysis techniques, the basic turbulent parameters such as turbulent intensity (variance of u$\sp\prime$), vertical momentum flux, $\rm\langle w\sp\prime u\sp\prime\rangle $, and variance of w$\sp\prime$ were obtained. The Reynolds stress distribution …

Go to article

Fluorescence Accompanying Photoionization In Polyatomic Molecules And The Relationship To Photoelectron Motion: A Global View., Jiahui Wu Jan 1996

Fluorescence Accompanying Photoionization In Polyatomic Molecules And The Relationship To Photoelectron Motion: A Global View., Jiahui Wu

LSU Historical Dissertations and Theses

Measurements of dispersed fluorescence from electronically excited photoions are used to study fundamental molecular scattering phenomena. Our experimental advances make it possible to obtain vibrationally resolved data that offer qualitative insights into photoionization dynamics in polyatomics. In particular, vibrationally resolved data are measured to probe the correlation of electronic and nuclear degrees of freedom via studying the vibrational distributions of photoions and ionic fragments. Vibrational branching ratios are mapped out over an extremely broad energy range ($\rm3\leq E\sb{k}\leq 200 eV$) for N$\sb2$O (7$\sigma\sp{-1}$) ionization channel. The origin of the non-Franck-Condon behavior is tentatively interpreted as shape resonances and Cooper minima. …

Go to article

A Review Of History, Structure, And Competition In The U.S. Airline Industry, Gerald N. Cook Jan 1996

A Review Of History, Structure, And Competition In The U.S. Airline Industry, Gerald N. Cook

Journal of Aviation/Aerospace Education & Research

The airline industry has evolved in two profoundly different eras, first under the protective hand of federal economic regulation and, following the Airline Deregulation Act of 1978, subjected to the full force of the free market. This history has proved a fertile testing ground for economic theories and predictions of market behavior. This paper first provides a brief history of the domestic airline industry under regulation. Next, the post-deregulation transformation is reviewed. Attention is then focused on a survey of the extensive airline economic literature. Finally, several current trends that promise to further shape the industry are examined.

Go to article

A Perspective On The Role Of African-Americans In Aviation, Patricia W. Harris, Patrick K. Alexander Jan 1996

A Perspective On The Role Of African-Americans In Aviation, Patricia W. Harris, Patrick K. Alexander

Journal of Aviation/Aerospace Education & Research

Despite the enthusiasm for aviation sparked by the historic flight of the Wright brothers in 1903, participation by African-Americans in the new flight age did not come easily. African-American aviators are scarcely known in the development of aviation due to opposition from the government, trade unions, and individuals acting out of their own prejudice. Thus, racial discrimination stood as a powerful barrier to African-American involvement in aviation.

Go to article

Plastic Fiber Rolling For Concrete Reinforcement, Jeffery S. Thomas Jan 1996

Plastic Fiber Rolling For Concrete Reinforcement, Jeffery S. Thomas

Masters Theses

"Fiber reinforced concrete is gaining in acceptance and usage as its strength and toughness benefits are realized. Polypropylene fibers are currently the most commonly used fibers. However, the cost of virgin plastics limits the percent content that can be economically added to concrete. One would first believe that recycled plastics could offer a viable alternative to virgin-plastic fibers, but at present time extra selection and cleaning steps required to reprocess the recycled plastic into fibers makes it more expensive than virgin-plastic fibers. A fiber rolling process conceived and developed at the University of Missouri-Rolla has the potential of making recycled …

Go to article

Famine, Plague, And Greed: Socio-Historical Factors Affecting The Development Of The Middle English Dialect Of London., George Vincent Yonek Jan 1996

Famine, Plague, And Greed: Socio-Historical Factors Affecting The Development Of The Middle English Dialect Of London., George Vincent Yonek

LSU Historical Dissertations and Theses

A significant factor in the rise of Standard English was the importance of London as a center of commerce and government, yet the foundation for Modern Standard English is not derived from the Southern dialects, which heavily influenced London in the late Old English and early Middle English period. The variety of English we speak and write today is derived mainly from the East Midland dialect and, to a lesser extent, the North in late Middle English. The purpose of this thesis is to explore the socio-historical causes behind this change in the distribution of features of the London dialect. …

Go to article

An Examination Of Compositional Techniques In Selected Organ Solo Compositions Of Naji Hakim., Hope Alysia Davis Jan 1996

An Examination Of Compositional Techniques In Selected Organ Solo Compositions Of Naji Hakim., Hope Alysia Davis

LSU Historical Dissertations and Theses

Naji Hakim is one of the most talented Lebanese composers of the latter half of the twentieth century residing in France. His prolific output includes works for varied media including organ solos, organ duos, chamber music for varied instrument and voice combinations, guitar quartets, orchestral works, and oratorios. The goal of this study is to examine the compositional techniques used by the composer in five of his major published works for solo organ written between 1983 and 1993. The compositions chosen are Memor, Rubaiyat, Hommage a Igor Stravinsky, The Embrace of Fire and Symphonie en Trois Mouvements. Hakim's use of …

Go to article

An Analysis Of Witold Lutoslawski's "Variations On A Theme By Paganini" For Two Pianos And An Original Composition "Concerto For Two Pianos And Orchestra"., Ling Chao Chen Jan 1996

An Analysis Of Witold Lutoslawski's "Variations On A Theme By Paganini" For Two Pianos And An Original Composition "Concerto For Two Pianos And Orchestra"., Ling Chao Chen

LSU Historical Dissertations and Theses

The dissertation is divided into two parts. Part I is an analysis of Witold Lutoslawski's "Variations on a Theme by Paganini" for Two Pianos. This consists of a detailed analysis preceded by a brief introductory discussion of Witold Lutoslawski's life and musical background. The composer has followed Paganini's model faithfully as far as the basic thematic material is concerned. However, his addition of supporting harmonies, imitative and free countermelodies, and rhythmical accompaniments make this setting an original composition. This analysis focuses on harmony, dynamics, counterpoint, rhythm, form and general texture of the piece. The main issues to be discussed are …

Go to article

Microsatellite-Based Paternity Analysis In Hexaploid Sweetpotato (Ipomoea Batatas (L.) Lam.)., Mario Ignacio Buteler Jan 1996

Microsatellite-Based Paternity Analysis In Hexaploid Sweetpotato (Ipomoea Batatas (L.) Lam.)., Mario Ignacio Buteler

LSU Historical Dissertations and Theses

The use of genetic markers for paternity identification was investigated in hexaploid sweetpotato. Traditional sweetpotato breeding relies on the open pollination of numerous parents and the visual selection of progeny. Previous empirical and theoretical evidence shows this type of breeding system is extremely inefficient. Typically, only a few of these maternal parents routinely produce superior progeny. A similar scenario exists for the paternal parent. Identifying specific parental combinations which produce superior progeny would improve breeding efficiency, hence the need to identify paternity in superior progeny. A computer simulation study established the minimum number of alleles and loci required for paternity …

Go to article

A Physiological Study Of Common Carpetgrass (Axonopus Affinis) Subjected To Cultural And Environmental Stress., Edward Wayne Bush Jan 1996

A Physiological Study Of Common Carpetgrass (Axonopus Affinis) Subjected To Cultural And Environmental Stress., Edward Wayne Bush

LSU Historical Dissertations and Theses

Common carpetgrass (Axonopus affinis Chase) is a low maintenance stoloniferous grass widely distributed throughout the southern coastal plains of the United States. This study investigated seed germination enhancement, seedhead suppression, waterlogging tolerance, winter hardiness, and maintenance practices for common carpetgrass. Pre-soaking common carpetgrass and centipedegrass (Eremochloa ophiuroides (Munro.) Hack.) seed was beneficial at the 30C germination temperature. Priming seed in KNO$\sb3$ solutions significantly accelerated seed germination of both centipedegrass and carpetgrass at 30C, and increased total germination percentage of centipedegrass. At 20 and 25C, seed priming significantly improved mean time of germination for both grass species and total germination percentage …

Go to article

Artificial Grammar Learning In A Dual Task Paradigm., Barbara Cochran Jan 1996

Artificial Grammar Learning In A Dual Task Paradigm., Barbara Cochran

LSU Historical Dissertations and Theses

A series of experiments explored the effects of performing concurrent secondary tasks on learning letter strings created with a finite state artificial grammar. Experiments 1-2 compared a task which disrupted organized encoding to a task which simply required holding information in memory while encoding strings, as well as to two control tasks. Participants performing the disruptive task were worse at judging the grammaticality of test strings than were participants in the two single task control groups. Performance of the memory load group fell between the disruptive task group and the control groups, but was not significantly different from either. Experiments …

Go to article

Wordsworth's Mother Tongue: Identification, Separation, And Recognition., Robert C. Hale Jan 1996

Wordsworth's Mother Tongue: Identification, Separation, And Recognition., Robert C. Hale

LSU Historical Dissertations and Theses

This psychoanalytic study complicates prevailing notions about William Wordsworth's representations of mothers. Wordsworth does not invariably conflate mothers with Nature or consistently construct women as silent objects of male quest. Rather, he explores a variety of mothers' voices, often associating them with language acquisition and poetic composition. In early work he acknowledges mothers' significance directly and creates more vocal mothers, while in later work and revisions he often conceals mothers' significance and depicts more object-like mothers. In the 1805 version of book two of The Prelude, Wordsworth recalls himself as a "blessed babe" who recognizes his mother as a separate …

Go to article

Gender And Spousal Violence: A Test Of Social Control And Resource Theories., Deborah Marie Hanrahan Jan 1996

Gender And Spousal Violence: A Test Of Social Control And Resource Theories., Deborah Marie Hanrahan

LSU Historical Dissertations and Theses

This research provides an explanation of spousal violence that has previously been lacking in the family violence literature--a social control approach. This research tests the hypothesis that those with stronger bonds to society will be less likely to engage in spousal violence. Furthermore, this research will incorporate the role that family structures have in stratifying social control for males and females by testing power-control theory, which suggests that women from egalitarian households of origin will be more likely to commit wife-to-husband violence than those from patriarchal households. Conversely, men from egalitarian households should be less likely to commit husband-to-wife violence …

Go to article

Bureaucrats, Bureaucracy And Utility Maximization: Empirical Evidence From Taiwan., Chinkun Chang Jan 1996

Bureaucrats, Bureaucracy And Utility Maximization: Empirical Evidence From Taiwan., Chinkun Chang

LSU Historical Dissertations and Theses

An important issue in public finance is concerned with finding an appropriate choice-theoretic model for explaining state and local government fiscal behavior. Economists have traditionally viewed state and local expenditure and tax decision-making processes "as if" they were the results of utility maximization subject to a budget constraint. This approach provides a convenient device for applying the neoclassical demand theory to state and local public sector fiscal behavior. The appropriateness of making such an assumption has, however, not been directly addressed in the literature. This research fills the gap by empirically testing whether the assumption of utility maximization holds in …

Go to article

Movements, Habitat Use, And Survival Of Female Northern Pintails In Southwestern Louisiana., Robert Ripley Cox Jr Jan 1996

Movements, Habitat Use, And Survival Of Female Northern Pintails In Southwestern Louisiana., Robert Ripley Cox Jr

LSU Historical Dissertations and Theses

I developed portable platforms for setting rocket nets in open-water habitats, and used them to capture 1116 waterfowl of 7 species during winters 1991-92 and 1992-93 in southwestern Louisiana. Distance and duration of evening flights of female northern pintails (Anas acuta; hereafter pintails) from Lacassine National Wildlife Refuge increased with date within wintering period, and generally were greater than previously reported estimates for wintering waterfowl. I found that diurnal use of refuges by females increased during hunting seasons, contradicting Tamisier's hypothesis that use of refuges by pintails in southwestern Louisiana is not influenced by hunting. Female pintails extensively used privately …

Go to article

Immobilization Of P. Digitatum And Bioconversion Of Limonene To Alpha-Terpineol., Qiang Tan Jan 1996

Immobilization Of P. Digitatum And Bioconversion Of Limonene To Alpha-Terpineol., Qiang Tan

LSU Historical Dissertations and Theses

The parameters of bioconversion of limonene to $\alpha$-terpineol by Penicillium digitatum were determined. This bioconversion was carried out stereo-specifically and selectively by this fungus. (R)-(+)-limonene was selectively converted to (R)-(+)-$\alpha$-terpineol by mycelia of this fungus during early growth phase. Immobilization of the fungal mycelia for use in continuous production of this product was possible. Aeration was critical to this bioconversion. The optimum aeration was about 1.6 mg/L for growing cells and immobilized cells. Substrate inhibition of the bioconversion was not observed when the substrate concentration was below 4% (v/v). End product inhibition was observed. The $\rm Ki\sb{app}$ was 12.08 mM. …

Go to article

Border Crossers And Coyotes: A Reception Study Of Latin American And Latina/O Literatures., Delia Maria Poey Jan 1996

Border Crossers And Coyotes: A Reception Study Of Latin American And Latina/O Literatures., Delia Maria Poey

LSU Historical Dissertations and Theses

Since the 1970s, there has been an ongoing debate within the humanities regarding the canon and curricular reform. Moving beyond questions of advocacy and the dichotomy of center and periphery (without diminishing the necessity of these), Border Crossers and Coyotes: A Reception Study of Latin American and Latina/o Literatures surveys the various ways which marginalized texts enter U.S. academic discourse as well as analyzing the conflicts inherent in these border crossings. The study proposes the position of the coyote, a person who transports undocumented workers across the U.S./Mexico border for profit, as analogous to that of the critic/teacher. Employing a …

Go to article

Training Parents To Facilitate Language Through Storybook Reading., Linda K. Crowe Jan 1996

Training Parents To Facilitate Language Through Storybook Reading., Linda K. Crowe

LSU Historical Dissertations and Theses

Six parent-child dyads participated in a single subject, multiple-baseline study evaluating the effectiveness of storybook reading as a context for parent training. Six children, ages 3;2 to 3;5 with specific language impairment, and their primary caregivers completed three-to-five baseline, eight-to-ten training, and two follow-up sessions. Parents were taught to use a complete reading cycle (CRC) based on a typical parent-child storybook reading format described by Ninio & Bruner (1978). The CRC consisted of four steps: (a) an attentional vocative to establish joint focus or topic for discussion, (b) a query to elicit a verbal response about the topic, (c) a …

Go to article

The Moderating Effect Of Combinations Of Dissimilar Shoppers' And Sellers' Ethnicities On A Model Of Dyadic Sales Encounters: Shoppers' Perceptions Of Ethnically Different Retail Salespersons., Andrew D. Banasiewicz Jan 1996

The Moderating Effect Of Combinations Of Dissimilar Shoppers' And Sellers' Ethnicities On A Model Of Dyadic Sales Encounters: Shoppers' Perceptions Of Ethnically Different Retail Salespersons., Andrew D. Banasiewicz

LSU Historical Dissertations and Theses

An empirical assessment of the moderating effect of combinations of ethnically dissimilar shoppers and sellers on the nature of retail sales encounters is undertaken. Following the similarity-attraction paradigm (Bochner 1982; Byrne 1961), it is theorized that ethnically similar shoppers and sellers are more attracted to each other than ethnically dissimilar ones, resulting in shoppers' perceptions of sellers' behaviors and personality traits being adversely effected. Operationally, the entire model of sales encounters is moderated by combinations of ethnically dissimilar shoppers and sellers (global moderation hypothesis), or dyadic ethnic dissimilarity. A 2 x 2 experimental design is employed, with the levels of …

Go to article

Modular Approaches For Designing Feedforward Neural Networks To Solve Classification Problems., Parvin Hashemian Jan 1996

Modular Approaches For Designing Feedforward Neural Networks To Solve Classification Problems., Parvin Hashemian

LSU Historical Dissertations and Theses

Perhaps the most popular approach for solving classification problems is the backpropagation method. In this approach, a feedforward network is initially built by an intelligent guess regarding the architecture and the number of hidden nodes and then trained using an iterative algorithm. The major problem with this approach is the slow rate of convergence of the training. To overcome this difficulty, two different modular approaches have been investigated. In the first approach, the classification task is reduced to sub-tasks, where each sub-task is solved by a sub-network. An algorithm is presented for building and training each sub-network using any of …

Go to article

James Joyce's "Ulysses" And World War I., Ann Hingle Martin Jan 1996

James Joyce's "Ulysses" And World War I., Ann Hingle Martin

LSU Historical Dissertations and Theses

The final words of Ulysses underline the text's position on the cusp of the pre- and postwar eras. Joyce was emphatic that Molly's "Yes" be immediately followed by those crucial coordinates: centerlineTrieste--Zurich--Paris. centerline 1914-1921. Where does this unsettling epitaph point us? In the direction of history, clearly; we are nudged toward the text's and its nail-paring creator's autobiography. Even the shallowest knowledge of recent history will indicate the centrality of those towns, during those years, to "all those wretched quarrels ... erroneouslv supposed to be about a punctilio of honour and a flag" (526). Even the shallowest knowledge of recent …

Go to article

Biochemical And Biophysical Studies Of Wild-Type And Active-Site Mutants Of Human Adenosine Deaminase., Qing Zeng Jan 1996

Biochemical And Biophysical Studies Of Wild-Type And Active-Site Mutants Of Human Adenosine Deaminase., Qing Zeng

LSU Historical Dissertations and Theses

The focus of this work is structural and functional studies of wild-type and active-site mutants of human adenosine deaminase. Two active-site amino acids, Glu217 and His238, were previously substituted with alanine by site-directed mutagenesis. The Glu217Ala and His238Ala mutants showed little or no changes in Zn content and $\rm K\sb{m}$ value, yet dramatic loss of enzyme activity. Circular dichroism studies of the solution conformation of wild-type and mutant human adenosine deaminases indicate that 30 to 50% of $\alpha$-helical structure is lost in Glu217Ala and His238Ala, respectively, whereas $\beta$-sheet structure is fully retained. Inhibitor binding is measured by a fluorescent assay. …

Go to article

A Case-Based Reasoning Approach To Bankruptcy Prediction Modeling., Stephanie Mattox Bryant Jan 1996

A Case-Based Reasoning Approach To Bankruptcy Prediction Modeling., Stephanie Mattox Bryant

LSU Historical Dissertations and Theses

This study examines the usefulness of an artificial intelligence method, case-based reasoning (CBR), in predicting corporate bankruptcy. Based on prior research, CBR is believed to be a viable method of predicting bankruptcy. Hypotheses are developed to test the usefulness of a CBR system and to compare the accuracy of such a system to the model considered to be the benchmark model in bankruptcy prediction, Ohlson's (1980) nine-factor logistic regression (logit) model. Sample data consisting of manufacturing and industrial firms is drawn from the Compustat database in a 20:1 ratio of nonbankrupt to bankrupt firms, consistent with Ohlson's (1980) proportions. Three …

Go to article

The Increase In Shaft Capacity With Time For Friction Piles Driven Into Saturated Clay., Hani Hasan Titi Jan 1996

The Increase In Shaft Capacity With Time For Friction Piles Driven Into Saturated Clay., Hani Hasan Titi

LSU Historical Dissertations and Theses

A general method for predicting pile setup, or the increase in the load carrying capacity of friction piles driven into saturated clay, was developed. The solution is based on the HiSS modeling approach, the strain path method, and the theory of nonlinear porous media. The ability of this method was demonstrated by predicting the field behavior of pile segment models during driving, subsequent consolidation, and load testing. Numerical simulations were performed on pile segment models because of the availability of field experimental tests necessary for verification and evaluation schemes. The method was also applied to investigate the behavior of full-scale …

Go to article

Women Who Lead High Schools: A Missing Element In Leadership Theory., Kristy Brock Hebert Jan 1996

Women Who Lead High Schools: A Missing Element In Leadership Theory., Kristy Brock Hebert

LSU Historical Dissertations and Theses

I addressed the problem that leadership theory is lacking in regard to how women lead high schools. My primary purpose was to contribute to the limited literature that exists regarding the leadership practices of women who are high school principals. I explored the notion of a female culture of school leadership and situated that culture among quintessential theory dictated by organizational research. I conducted this study in two phases. In Phase One I reported the demographics of 44 female high school principals in Louisiana along with their self-reported values on 32 leadership characteristics. Most important to their leadership were: communication, …

Go to article

Foraging Behavior And Habitat Selection Of Insectivorous Migratory Songbirds At Gulf Coast Stopover Sites In Spring., Chao-Chieh Chen Jan 1996

Foraging Behavior And Habitat Selection Of Insectivorous Migratory Songbirds At Gulf Coast Stopover Sites In Spring., Chao-Chieh Chen

LSU Historical Dissertations and Theses

Abundance of some species of Nearctic-Neotropical migrants has been declining dramatically since 1970. Most literature about Neotropical migrants is from the breeding grounds, and some is from the wintering grounds; very little is from stopover sites. I studied foraging behavior and habitat selection of insectivorous migratory songbirds at three stopover sites along northern coast of the Gulf of Mexico during spring migrations of 1993-1995. Each migrant species had its unique combination of foraging behavior and habitat use during stopover. Migrants selected certain habitat strata and plant species and avoided others. The decrease of understory vegetation in the reduced plots had …

Go to article

Mechanism Of Nitrogen Fixation: Use Of Carbon Monoxide To Probe Nitrogenase Activity., Linda Margaret Cameron Jan 1996

Mechanism Of Nitrogen Fixation: Use Of Carbon Monoxide To Probe Nitrogenase Activity., Linda Margaret Cameron

LSU Historical Dissertations and Theses

The inhibitor CO was used to investigate the mechanism of Mo and V nitrogenase. While low pressures of CO enhanced, high pressures inhibited V nitrogenase-catalyzed C$\rm\sb2H\sb6$ formation. This is not the case for $\rm C\sb2H\sb4$ formation, where the rate of electron flux determined if CO acted as an enhancer or inhibitor. A two-site model is proposed, in which CO binding to one site enhances, and CO binding to both sites inhibits product formation. Replacement of CO(g) by Ar or $\rm C\sb2H\sb2$ resulted in correlated decay of hi-CO and development of lo-CO EPR signals, suggesting that the two signals arise from …

Go to article

The Treatment Utility Of Functional Analyses For Disruptive Classroom Behavior., Carmen D. Broussard Jan 1996

The Treatment Utility Of Functional Analyses For Disruptive Classroom Behavior., Carmen D. Broussard

LSU Historical Dissertations and Theses

Disruptive classroom behaviors are a frequent referral problem in school settings. Although there are several intervention approaches that are commonly used in classroom settings, no standard methodology exists for developing interventions to decrease behavior problems. The primary purpose of this investigation was to develop interventions based upon a functional analysis of disruptive behavior of developmentally normal children in classroom settings, and to analyze treatment effectiveness. Functional analyses which investigated the effect of peer attention, teacher attention, and negative reinforcement (escape) were conducted with five participants. The variable maintaining disruptive classroom behavior was peer attention for all participants. Following the functional …

Go to article

On-Line Steady-State Gain Identification For On-Line Optimization Of Multivariable Constrained Chemical Processes., Umesh Kishore Chitnis Jan 1996

On-Line Steady-State Gain Identification For On-Line Optimization Of Multivariable Constrained Chemical Processes., Umesh Kishore Chitnis

LSU Historical Dissertations and Theses

The Amoco Model IV Fluidized Catalytic Cracking Unit (FCCU) (McFarlane et al, 1993) was augmented with Lee & Groves Model (1985) to provide for a simple but realistic product distribution model. This enabled a better and realistic on-line optimization of the FCCU. A Supervisory Multivariable Constrained Optimization (SMCO) algorithm was applied to this augmented model. It was observed that the FCC unit is optimized successfully, without violating any constraints. The parabolic error-penalizing function, incorporated in the algorithm allowed the constraints to asymptotically approach the limits without violating them. The on-line optimization to FCC unit led to maximizing of the feeds, …

Go to article

Synthesis Of Novel Amino Acids With Incorporation Into Peptides And Synthesis Of Peptides With Novel Aggregation States., Scott Michael Cowell Jan 1996

Synthesis Of Novel Amino Acids With Incorporation Into Peptides And Synthesis Of Peptides With Novel Aggregation States., Scott Michael Cowell

LSU Historical Dissertations and Theses

Peptides exhibit properties based on the amino acids present in the peptide and structure the peptide assumes in its environment. For example, peptides have been shown to be antimicrobial when they are amphipathic and in an $\alpha$-helical shape. The mechanism for this antimicrobial activity is subject to dispute. One theory states that the peptides work by forming a "pore" through the cell membrane which causes a depolarization of the membrane and the cell lysis because of osmosis. Another theory states that the peptides merely compromise the integrity of the membrane by solubilizing the membrane. In order for the "pore" theory …

Go to article

First Prev Next Last