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Dinitropyrenes: Nitroreduction Processes And Evaluation Of Indices Of Exposure., Matthew Jerome Krautmann Jan 1996

Dinitropyrenes: Nitroreduction Processes And Evaluation Of Indices Of Exposure., Matthew Jerome Krautmann

LSU Historical Dissertations and Theses

Investigations were conducted to identify biomarkers of exposure to dinitropyrenes (DNPs), which are mutagenic and carcinogenic residues of incomplete combustion. One possible biomarker, a DNP-protoporphyrin IX adduct, was not found in analytically useful quantities in liver tissue or in bile. Clastogenicity, a biomarker of effect, also was found to be absent in marrow cells following subchronic exposure of rats to DNPs by gavage. Solubility studies, used as a basis for dosing guidelines, revealed that DNPs are relatively insoluble in both aqueous and lipid tissue compartments. Calculated log P values indicated that the reduced metabolites of DNPs probably are more soluble …

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Allocation Of Two Dimensional Parts Using A Shape Reasoning Heuristic., Henry Joseph Lamousin Iii Jan 1996

Allocation Of Two Dimensional Parts Using A Shape Reasoning Heuristic., Henry Joseph Lamousin Iii

LSU Historical Dissertations and Theses

A technique is outlined for the allocation of irregular parts onto arbitrarily shaped resources. Placements are generated by matching complementary shapes between the unplaced parts and the remaining areas of the stock material. The part and resource profiles are characterized to varying levels of detail using geometric "features". Information contained in the features is used at each stage of processing to intelligently select and place parts on the resource. Techniques for the efficient handling of complex profiles and other practical implementation issues are described. The utility of the proposed approach is verified using diverse problems from a marine fabrication facility. …

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De Plana Musica And Introductio Musice: A Critical Edition And Translation, With Commentary, Of Two Treatises Attributed To Johannes De Garlanda., Nigel Gwee Jan 1996

De Plana Musica And Introductio Musice: A Critical Edition And Translation, With Commentary, Of Two Treatises Attributed To Johannes De Garlanda., Nigel Gwee

LSU Historical Dissertations and Theses

Johannes de Garlandia (fl. 1250, Paris), author of the seminal De mensurabili musica, has been linked to two plainchant treatises, De plana musica and Introductio musice. This dissertation presents the first critical edition and translation, with commentary, of these two treatises. It includes an introduction, Latin texts of the two treatises with English translations in parallel columns, critical apparatus, commentary, and appendices. De plana musica is transmitted in three sources, Introductio musice in four. The text of Introductio musice established here is shorter than that printed by Coussemaker (CS, 1:157-75), who included in the final portion of his text several …

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Fluorescence Studies Of Ecori Restriction Endonuclease Structure And Dynamics., Wei Liu Jan 1996

Fluorescence Studies Of Ecori Restriction Endonuclease Structure And Dynamics., Wei Liu

LSU Historical Dissertations and Theses

Sequence specific protein-DNA interaction involves changes in protein conformation and dynamics. Research work involved in this thesis is the study of structure and dynamics of EcoRI restriction endonuclease N-termini. The N-termini of EcoRI endonuclease has been shown to be essential for DNA cleavage and also stabilize EcoRI-DNA complex. But they are not resolved in the X-ray crystal structure. An Asn3Cys mutation was made at the N-termini by site-directed mutagenesis and the mutant was subjected to cysteine crosslinking, pyrene labeling and fluorescence studies. Chemical crosslinking of Asn3Cys mutant and steady-state fluorescence studies of pyrene-labeled mutant indicated that the N-termini are in …

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Characterization Of Variant Equine Infectious Anemia Virus Long Terminal Repeat Sequences., Charles Richard Madden Jan 1996

Characterization Of Variant Equine Infectious Anemia Virus Long Terminal Repeat Sequences., Charles Richard Madden

LSU Historical Dissertations and Theses

Equine infectious anemia virus (EIAV) is the causative agent of a persistent disease in horses. The long terminal repeat (LTR) region of EIAV contains the enhancer and promoter elements necessary for transcription of the proviral genome. The LTR is also prone to a high degree of sequence variability between different virus isolates. Sequence alignments of LTR variants from both tissue culture-adapted strains of the virus as well as sequential horse isolates showed a high degree of sequence variability between variants. Sequence variability was further localized to a hypervariable region approximately 60 bp upstream of the TATA box. This region contained …

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Restructuring In Louisiana Schools., Sharon Lee Pol Jan 1996

Restructuring In Louisiana Schools., Sharon Lee Pol

LSU Historical Dissertations and Theses

This study employs both quantitative and qualitative techniques to study the restructuring processes at the district, school, and teacher levels. The quantitative procedures include surveys used to distinguish between teachers's perceptions of highly and moderately restructured schools. Qualitative research techniques included interviews, observations, and document analysis to describe the restructuring. A new instrument, the Attributes of School Restructuring Scale (ASRS), was developed to measure teachers' knowledge about restructuring efforts and their involvement in the restructuring projects. The final version of the ASRS, included 48-items spread across three subscales: Budget/Finance, Governance/Decision-Making, and Curriculum/Instruction. The quantitative results from the statewide study indicated …

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Designing Diagnosable Distributed Programs., Amit Anil Nanavati Jan 1996

Designing Diagnosable Distributed Programs., Amit Anil Nanavati

LSU Historical Dissertations and Theses

The difficulty in debugging distributed programs motivates the development of formal methods for designing distributed programs that are easier to debug and maintain. We address state identification problem for distributed systems using the finite state I/O automaton model. A state S is identified based on the unique event sequences starting at S, called distinguishing sequences. An automaton is diagnosable if every state has a distinguishing sequence. A distributed program may not be diagnosable even if its components are diagnosable. Non-dignosable automata can, in some cases, be converted to a diagnosable form by relabelling some of its transitions in a way …

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Performance Analysis Of Multi-Echelon Inventory Systems., David Lee Peak Jan 1996

Performance Analysis Of Multi-Echelon Inventory Systems., David Lee Peak

LSU Historical Dissertations and Theses

A two-echelon inventory and distribution system consisting of a centralized warehouse and N stores is considered in this paper. The inventories of the warehouse as well as the stores are controlled by periodic review (s,S) ordering policies. The expected levels of capital investment, storage space needs, capacity requirements for delivery vehicles, and reliable customer service are issues of great importance to practitioners when considering the introduction of a central warehouse and transportation system. Helmut Schneider, Dan Rinks, and Peter Kelle have developed a methodology that has been shown to provide approximately optimal (s,S) policies under various demand conditions, and are …

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Paleoindicators Of Changing Water Conditions In Louisiana Estuaries., Michael Lewis Parsons Jan 1996

Paleoindicators Of Changing Water Conditions In Louisiana Estuaries., Michael Lewis Parsons

LSU Historical Dissertations and Theses

Sediment cores were collected to study the development of eutrophication and hydrological changes in coastal Louisiana. The cores were taken at marsh sites hypothesized to be influenced primarily by riverine inputs (Fourleague Bay-FLB), localized activities (Terrebonne Bay-TSMP), and both riverine and localized processes (Airplane Lake-APL). The sediment cores represented time frames ranging from 330 years (APL) to 70 years (TSMP) BP according to core dating results. Sediment core samples were analyzed for diatoms, other microfossils, pigments, biogenic silica, and sediment characteristics. Additionally, land use records were utilized as a proxy of anthropogenic activities, and to aid in the interpretation of …

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Efficacy Of Communicative Reading Strategies As An Instructional Approach For Adult Low-Ability Readers., Sara S. Reichmuth Jan 1996

Efficacy Of Communicative Reading Strategies As An Instructional Approach For Adult Low-Ability Readers., Sara S. Reichmuth

LSU Historical Dissertations and Theses

Twelve adult low-ability readers participated in a pretest-posttest control group study investigating the efficacy of Communicative Reading Strategies (CRS) as an instructional reading approach. Six adults received CRS instruction and constituted the experimental group. The remaining six adults received skill-based instruction and served as the control group. All participants demonstrated instructional level reading skills at or below a fifth grade level and completed 40 hours of instruction. Changes in performance on measures of word recognition, comprehension, and reading rate from pretest to posttest were used to compare CRS and control groups. Results of Mann Whitney U analyses revealed that both …

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Ostinato Patterns In The Opera "Antigone" By Carl Orff And An Original Composition For Organ And Orchestra, "In Nomine"., Wieslaw Sta Rentowski Jan 1996

Ostinato Patterns In The Opera "Antigone" By Carl Orff And An Original Composition For Organ And Orchestra, "In Nomine"., Wieslaw Sta Rentowski

LSU Historical Dissertations and Theses

This dissertation consists of two parts: a discussion of the ostinato patterns in Carl Orff's five-act opera Antigone and an original composition for organ and orchestra, In Nomine. The purpose of Part One is to discuss the different applications of the ostinato idea throughout the opera Antigone as this is an integral part of the work. This part is divided into five chapters. The first chapter focuses on biographical background of the composer, his stylistic transformations, and his interest in a total musical theater. The second chapter introduces definitions and music examples of the ostinato and ground bass, associated with …

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Students' Understanding Of The Interaction Between Charged Conductors., Chitra Guruswamy Jan 1996

Students' Understanding Of The Interaction Between Charged Conductors., Chitra Guruswamy

LSU Historical Dissertations and Theses

This dissertation describes an investigation into students' understanding of the interaction between two charged conductors. The study consists of two parts. The first part is based on interviews and written tests conducted with students in an algebra-trigonometry-based physics course. Results from several tasks are reported. Two of the tasks involve a pair of identical conductors that are given an initial charge, are made to touch each other, and are then separated. In the first task, students were asked to predict the final charges on each conductor. In the second, they were asked to predict the final positions of the charges …

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Virtual Central Control., Raghuram A. Yedatore Jan 1996

Virtual Central Control., Raghuram A. Yedatore

LSU Historical Dissertations and Theses

A distributed system is a set of cooperating computers (processes) communicating with each other to achieve a common goal. They are broadly classified as centralized and decentralised systems. In a centralized system, a single computer plays the role of central coordinator and controls all the system activities. Whereas in a decentralized system, all the cooperating processes have an equal role to play, therefore solutions to problems involve instructing all the processes and coordinating their actions. Although a centralized system facilitates program development, it has serious drawbacks. If the coordinator fails, the system effectively breaks down. Also, the coordinator can become …

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From Object-Oriented Specification To Implementation: A Formal Refinement Methodology., Moonsung Yoo Jan 1996

From Object-Oriented Specification To Implementation: A Formal Refinement Methodology., Moonsung Yoo

LSU Historical Dissertations and Theses

Traditionally, software development models use different methods and techniques in each phase from specification through design to implementation. Significant changes in the representations between phases have been common. The formal development method based on formal specification and stepwise development has been suggested to reduce the change in representation. The formal development method consists of a formal specification and verified design. In the formal specification step, a formal specification language is used to specify an accurate, consistent, and complete system. Vienna Development Method (VDM) is one of the most widely used formal specification languages. A verified design guides the development of …

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Dairy Herd Improvement Records As Replacement Of Technician Breeding Receipt Database For Routine Estimates Of Non-Return Rates For Al Bulls In Technician-Devoid Areas., Rick A. Baron Jan 1996

Dairy Herd Improvement Records As Replacement Of Technician Breeding Receipt Database For Routine Estimates Of Non-Return Rates For Al Bulls In Technician-Devoid Areas., Rick A. Baron

LSU Historical Dissertations and Theses

The objective of this study was to find whether DHI data could be used to estimate sire non-return rates to replace current technician data estimates. Bull weighted least squares means for non-return rates were calculated separately for five overlapping 60-90 day service periods from each data source. Models included stud, sire, service number, and linear and quadratic form of breeding month for both data sources, service unit for technician and lactation for DHI data. Sire and lactation were not significant $(P > .10).$ Technician differences $(P < .05)$ were in service unit, stud, service number, and linear and quadratic service month in all but one service period. DHI differed $(P < .05)$ for service number, month (linear and quadratic), and stud in two service periods. Technician R-square values were 0.23 to 0.28 versus 0.94 to 0.96 for DHI. Sire estimated non-return rates were weighted using the inverted estimator standard error squared and compared. Sire, stud, data source, service period, and appropriate interactions were modeled. Weighted bull non-returns differed $(P < .01)$ in magnitude across data sources. Stud, data source by stud, and sire within stud by data source were significant $(P .10).$ Four fertility categories based on mean and standard deviation of the weighted estimates were formed within the data sources across service periods. These categories were correlated (0.5 $>$ r $>$ 0.9) and 52.9 to 87.4% congruent within data source for adjacent …

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Deaf Students In Mainstreamed College Composition Courses Culture And Pedagogy., Tonya Stremlau Johnson Jan 1996

Deaf Students In Mainstreamed College Composition Courses Culture And Pedagogy., Tonya Stremlau Johnson

LSU Historical Dissertations and Theses

Composition theorists have already considered the effect of cultural constructs on writing students and have modified pedagogical practices to meet the needs of diverse students. However, disability has remained an almost invisible category in composition studies. This is unfortunate because our society has historically limited the access of the disabled into society, including the academy. Composition teachers need to understand deafness because poor English literacy skills are one culturally constructed attribute associated with hearing loss. The need is especially great now that legal and social developments are encouraging more deaf students to enroll in hearing majority colleges. Also, high-level literacy …

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Security And Rational Choice: Household, Community, And Public Provision., John Collins Kilburn Jr Jan 1996

Security And Rational Choice: Household, Community, And Public Provision., John Collins Kilburn Jr

LSU Historical Dissertations and Theses

This dissertation examines the problem of order through an analysis of individual practices of security. Because security is a multi-dimensional issue, no unified perspective currently exists to explain security practices. Based on my analysis of data from a detailed survey of 137 residents of a Baton Rouge neighborhood, I argue that there are three main dimensions of security and each has a unique set of determinants, since individuals are contextually situated in their households, neighborhoods, and municipalities. This dissertation examines variables related to psychological, stratification, social network, and rational choice perspectives. The analysis demonstrates that although factors suggested by each …

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Tonal Structure In The Mazurkas Op. 50/I Of Karol Szymanowski., Thais Egydia Perkins Jan 1996

Tonal Structure In The Mazurkas Op. 50/I Of Karol Szymanowski., Thais Egydia Perkins

LSU Historical Dissertations and Theses

Karol Szymanowski (1882-1937) is generally considered to be one of Poland's most significant composers after Frederic Chopin (1810-1849). His work represents a nationalistic link between Chopin and the twentieth-century Polish school, which includes Witold Lutoslawski (1913-1994) and Krzysztof Penderecki (b. 1933). Szymanowski's twenty Mazurkas, Op. 50 (1922-1924), are an important contribution to piano literature because they demonstrate the first true development of the genre after Chopin. Written during Szymanowski's 'Nationalistic' period (1920-1937), the Mazurkas reflect the composer's intent to utilize elements of Polish folk music in a twentieth-century musical context, thus contributing to the development; of the modern Polish nationalistic …

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Three Essays On Var Techniques., Omer Ozcicek Jan 1996

Three Essays On Var Techniques., Omer Ozcicek

LSU Historical Dissertations and Theses

This dissertation consists of three essays on vector autoregressive (VAR) models. The first examines lag selection criteria. Typically, in VAR models all variables have the same lag length in each equation. Hsiao (1981) and Keating (1994) suggest two ways to estimate asymmetric lag structures. In a Monte-Carlo framework, we simulate eight prespecified VAR models and observe how the lag specification methods perform. We also look at the impulse response and forecast performances of these lag selection methods. We find that the AIC criterion performs better in finite samples than the SIC criterion, and Keating's method is superior to Hsiao's method. …

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High 4-Momentum Elastic Electroproduction Of Vector Mesons At Hera., Vijaya Kumar Nadendla Jan 1996

High 4-Momentum Elastic Electroproduction Of Vector Mesons At Hera., Vijaya Kumar Nadendla

LSU Historical Dissertations and Theses

The production of $\phi$ mesons in the reaction $e\sp+p\to e\sp+\phi p (\phi\to K\sp+K\sp-)$, for $7

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An Integrated Network Architecture For A High Speed Distributed Multimedia System., Nitin Subrao Naik Jan 1996

An Integrated Network Architecture For A High Speed Distributed Multimedia System., Nitin Subrao Naik

LSU Historical Dissertations and Theses

Computer communication demands for higher bandwidth and smaller delays are increasing rapidly as the march into the twenty-first century gains momentum. These demands are generated by visualization applications which model complex real time phenomena in visual form, electronic document imaging and manipulation, concurrent engineering, on-line databases and multimedia applications which integrate audio, video and data. The convergence of the computer and video worlds is leading to the emergence of a distributed multimedia environment. This research investigates an integrated approach in the design of a high speed computer-video local area network for a distributed multimedia environment. The initial step in providing …

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Experimental Investigation Of Wall And Inertial Effects On A Disk Sedimenting At Low Reynolds Number., Joe Wade Pulley Jan 1996

Experimental Investigation Of Wall And Inertial Effects On A Disk Sedimenting At Low Reynolds Number., Joe Wade Pulley

LSU Historical Dissertations and Theses

Measurements have been made of the drag on a thin disk of diameter d moving broadside through a liquid of viscosity $\mu$ and density $\rho$. The liquid is bounded on the outside by a cylindrical tube, diameter D, which is coaxial with the disk. The geometrical parameter $\xi$ = d/D ranges from 0.0189 to 0.112. The Reynolds number Re = $\rho$Ud/$\mu$ ranges from 0.0167 to 6.89. When the measured values are extrapolated to Re = 0, the results agree with the calculations of Shail and Norton. When extrapolated to $\xi$ = 0, the results agree with the matched-asymptotic series solution …

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Baldcypress And Pondcypress: An Annotated Bibliography, 1890-1995, Z Liu Jan 1996

Baldcypress And Pondcypress: An Annotated Bibliography, 1890-1995, Z Liu

LSU Agricultural Experiment Station Reports

No abstract provided.

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Oxygen And Ph Regulation Of Protein Synthesis In Mitochondria From Artemia Franciscana Embryos, Kurt E. Kwast, Steven C. Hand Jan 1996

Oxygen And Ph Regulation Of Protein Synthesis In Mitochondria From Artemia Franciscana Embryos, Kurt E. Kwast, Steven C. Hand

Faculty Publications

To identify factors responsible for the down-regulation of mitochondrial biosynthetic processes during anoxia in encysted Artemia franciscana embryos, the effects of oxygen limitation and pH on protein synthesis were investigated in isolated mitochondria. At the optimal pH of 7.5, exposure of mitochondria to anoxia decreases the protein synthesis rate by 79%. Rates were suppressed by a further 10% at pH 6.8, the intracellular pH (pH,) measured under anoxia in vivo. Matrix pH, measured under identical conditions, was 8.43 ± 0.01 at an extramitochondrial pH of 7.9 (mean ± S.E.M. n = 3), 8.05 ± 0.01 at pH 7.5, and 7.10 …

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Climate Forcing And Thermal Feedback Of Residual Lake-Ice Covers In The High Arctic, Peter T. Doran, Christopher P. Mckay, W. Peter Adams, Michael C. English, Robert A. Wharton, Michael A. Meyer Jan 1996

Climate Forcing And Thermal Feedback Of Residual Lake-Ice Covers In The High Arctic, Peter T. Doran, Christopher P. Mckay, W. Peter Adams, Michael C. English, Robert A. Wharton, Michael A. Meyer

Faculty Publications

A discontinuous ice coverage and lake temperature record of 36-yr duration has been compiled for Colour Lake (79°25'N, 90°45'W) on Axel Heiberg Island, Northwest Territories. About once every 6 yr, the ice cover remains through the entire summer, creating a residual ice cover the following winter. Residual ice covers are more frequent in the last 10 yr (1986-1995) than in the 20 yr from 1959 to 1978, indicating a reduction in climate factors controlling ice decay. These factors are identified as the number of thawing degree-days, suggesting a tendency toward cooler summers over the last decade. We report year-round meteorology …

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Automatic Correlation And Calibration Of Noisy Sensor Readings Using Elite Genetic Algorithms, R. R. Brooks, S. S. Iyengar, J. Chen Jan 1996

Automatic Correlation And Calibration Of Noisy Sensor Readings Using Elite Genetic Algorithms, R. R. Brooks, S. S. Iyengar, J. Chen

Faculty Publications

This paper explores an image processing application of optimization techniques which entails interpreting noisy sensor data. The application is a generalization of image correlation; we attempt to find the optimal gruence which matches two overlapping gray scale images corrupted with noise. Both tabu search and genetic algorithms are used to find the parameters which match the two images. A genetic algorithm approach using an elitist reproduction scheme is found to provide significantly superior results.

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Geographic Information Systems For Schistosomiasis In Brazil., Maria Emilia Bavia Jan 1996

Geographic Information Systems For Schistosomiasis In Brazil., Maria Emilia Bavia

LSU Historical Dissertations and Theses

This study has identified environmental factors influencing the distribution of schistosomiasis and the prevalence of the disease in the population in the state of Bahia, Brazil. The Intergraph Modular Environmental Systems nucleus (MGE), a geographic information system (GIS), was applied to 30 municipalities in Bahia to establish a descriptive and quantitative study of the spatial and temporal dynamics of infection. The GIS was constructed by digitizing maps of soil type, vegetation, topology, and hydrologic features including temperature, rainfall, and seasonal pattern of precipitation, prevalence of schistosomiasis, and the distribution of snails, which are the intermediate hosts of the disease. The …

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Molecular Systematics Of Red Algae., Jeffrey Craig Bailey Jan 1996

Molecular Systematics Of Red Algae., Jeffrey Craig Bailey

LSU Historical Dissertations and Theses

Phylogenetic analyses of nucleotide sequences for the nuclear-encoded small subunit ribosomal RNA (SSU) gene were used to test current hypotheses of relationships within the Corallinales and among the florideophycidaean orders of red algae. Analyses of SSU gene sequences indicate that the order Corallinales includes four major lineages. The Sporolithaceae is resolved as the earliest-diverging lineage within the order and forms the sister group to a monophyletic Corallinaceae. The molecular data also support the monophyly of the subfamilies Melobesioideae and Corallinoideae. The latter subfamily is inferred as sister to a fourth lineage including non-geniculate and geniculate species classified in the subfamilies …

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Polymerase Chain Reaction (Pcr) Assay For The Detection And Differentiation Of The Virulent Strains Of Mycoplasma Mycoides Subspecies Mycoides "Small Colony" Type From The Vaccine T1 Strain In Purified Dna And In Field Samples From Africa., Abdullahi Sheikh Hassan Kalif Jan 1996

Polymerase Chain Reaction (Pcr) Assay For The Detection And Differentiation Of The Virulent Strains Of Mycoplasma Mycoides Subspecies Mycoides "Small Colony" Type From The Vaccine T1 Strain In Purified Dna And In Field Samples From Africa., Abdullahi Sheikh Hassan Kalif

LSU Historical Dissertations and Theses

Two primer sets were manufactured from the cytadhesin P1 gene of M. Pneumoniae in an attempt to amplify homologous sequences in M. mycoides subsp. mycoides "SC" Type in a search for a P1-like gene in the latter organism. The first primer set MP-2 amplifies a 488 bp fragment in M. pneumoniae. The second primer set MP-3 amplifies a 303 bp fragment bracketing the 13-amino acid binding domain in the same organism. Both primer sets amplified the expected fragments in all the virulent strains of M. mycoides subsp. mycoides "SC" type. The primer sets did not however amplify the expected fragments …

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Measurement Of The Diffractive Structure Function In Deep Inelastic Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz Dec 1995

Measurement Of The Diffractive Structure Function In Deep Inelastic Scattering At Hera, M. Derrick, D. Krakauer, S. Magill, D. Mikunas, B. Musgrave, J. Repond, R. Stanek, R. L. Talaga, H. Zhang, R. Ayad, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, P. Bruni, G. Cara Romeo, G. Castellini, M. Chiarini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, C. Nemoz

Faculty Publications

This paper presents an analysis of the inclusive properties of diffractive deep inelastic scattering events produced in ep interactions at HERA. The events are characterised by a rapidity gap between the outgoing proton system and the remaining hadronic system. Inclusive distributions are presented and compared with Monte Carlo models for diffractive processes. The data are consistent with models where the pomeron structure function has a hard and a soft contribution. The diffractive structure function is measured as a function of xℙ, the momentum fraction lost by the proton, of β, the momentum fraction of the struck quark with respect to …

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