197,171 research outputs found
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Hampaiden menetys, alaleuan morfologia ja proteettinen hoito: kliininen, radiologinen ja <em>in vitro</em> tutkimus
No full textAbstractTooth loss adversely affects patients’ quality of life and causes inevitable changes in the mandibular morphology. Polymethyl methacrylate (PMMA) is the most frequently used material of removable dentures. Denture stomatitis (DS) is a common clinical finding among denture wearers, particularly patients with debilitating diseases. Several fillers and nanofillers have been used to improve the physical, mechanical, antifungal, and antimicrobial properties of PMMA.The aim of the present retrospective cross-sectional study was to determine the prevalence of tooth loss and the commonly used prosthetic constructions in 479 adult patients at the Department of Substitutive Dental Sciences (SDS), College of Dentistry, University of Dammam, currently Imam Abdulrahman Bin Faisal University, Dammam. The influence of tooth loss on mandibular morphology was studied by using cone-beam computed tomographic (CBCT) scans of 101 patients. The effect of addition of thymoquinone (TQ) and nanodiamonds (NDs) to PMMA on the flexural and surface properties of PPMA and their antifungal influence was tested through in vitro studies.Edentulousness was recorded in 6%, a single edentulous arch in 8%, and partial edentulousness in 74% of the patients. Age and diabetes were significantly associated with edentulousness. Males had a significantly higher number of missing teeth compared to females. Kennedy class III was most common in the upper and lower jaw and was treated more often with fixed partial denture (FPD) than with removable partial denture (RPD). Larger gonial angle (GA) of the mandible was found in edentulous patients, in females and in older compared to dentate patients, males and younger patients. The addition of TQ to PMMA at low concentration did not significantly change the flexural strength, elastic modulus or surface properties of PMMA. The addition of NDs to PMMA significantly reduced surface roughness and the Candida albicans (C. albicans) count.Edentulousness increased in old age and caused changes in mandibular morphology. TQ addition at low concentration did not change the flexural and surface properties of PMMA. NDs decreased the surface roughness of PMMA and Candida albicans adhesion, which could help in the prevention of denture stomatitis.Original papersOriginal papers are not included in the electronic version of the dissertation.Fouda, S. M., Al-Harbi, F. A., Khan, S. Q., Virtanen, J. I., & Raustia, A. (2017). Missing Teeth and Prosthetic Treatment in Patients Treated at College of Dentistry, University of Dammam. International Journal of Dentistry, 2017, 1–6. https://doi.org/10.1155/2017/7593540Self-archived versionFouda, S., Gad, M., El Tantawi, M., Virtanen, J., Sipila, K., & Raustia, A. (2019). Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study. Journal of Clinical and Experimental Dentistry, 0–0. https://doi.org/10.4317/jced.55879Gad, M. M., Al‐Thobity, A. M., Fouda, S. M., Näpänkangas, R., & Raustia, A. (2018). Flexural and Surface Properties of PMMA Denture Base Material Modified with Thymoquinone as an Antifungal Agent. Journal of Prosthodontics, 29(3), 243–250. https://doi.org/10.1111/jopr.12967Fouda, S. M., Gad, M. M., Ellakany, P., Al-Thobity, A. M., Al-Harbi, F. A., Virtanen, J. I., & Raustia, A. (2019). The effect of nanodiamonds on candida albicans adhesion and surface characteristics of PMMA denture base material - an in vitro study. Journal of Applied Oral Science, 27. https://doi.org/10.1590/1678-7757-2018-0779Self-archived versionTiivistelmäHampaattomuus vaikuttaa potilaiden elämänlaatuun ja aiheuttaa alaleuan muodon muutoksia. Hampaattomuutta ja hammaspuutoksia voidaan hoitaa purennan kuntoutuksella irtoproteeseilla ja kiinteällä protetiikalla. Polymetyylimetakrylaatti (PMMA) on yleisimmin käytetty irtoproteesien materiaali. Suun sieni-infektio, proteesistomatiitti, on yleinen kliininen löydös proteesipotilailla ja erityisesti potilailla, joilla on yleiskuntoa heikentäviä sairauksia. Erilaisia lisämateriaaleja on käytetty parantamaan PMMA:n fysikaalisia, mekaanisia ja antimikrobisia ominaisuuksia.Tämän retrospektiivisen poikittaistutkimuksen tarkoituksena oli kartoittaa hampaattomuuden ja hammaspuutosten esiintyvyys ja toteutetut proteettiset hoidot 479 saudiarabialaisella aikuispotilaalla, jotka oli hoidettu Dammanin yliopiston hammaslääketieteen laitoksella. Hammaspuutosten vaikutusta alaleuan muotoon tutkittiin 101 potilaan kartiokeilatietokonetomografia (KKTT) kuvista. Tymokinonin (thymoquinone, TQ) ja nanotimanttien (ND) lisäyksen vaikutusta PPMA:n taivutuslujuuteen ja pintaominaisuuksiin sekä niiden antimikrobisia ominaisuuksia tutkittiin in vitro kokein.Täydellistä hampaattomuutta oli 6 %:lla, ylä- tai alaleuan hampaattomuutta 8 %:lla ja osittaista hampaattomuutta 74 %:lla potilaista. Hampaattomuutta lisäsivät merkittävästi potilaan ikä sekä yleissairauksista diabetes. Miehillä oli merkittävästi enemmän omia hampaita jäljellä kuin naisilla. Hammaspuutosten sijainnin luokittelussa Kennedyn luokka III oli yleisin sekä ylä- että alaleuassa ja puutos oli useammin hoidettu kiinteällä siltaratkaisulla kuin irrotettavalla osaproteesilla. Alaleuan leukakulma oli hampaattomilla, naisilla ja vanhemmilla potilailla suurempi kuin hampaallisilla, miehillä ja nuoremmilla potilailla.Alhainen TQ-pitoisuus ei merkittävästi muuttanut PMMA:n taivutuslujuutta, kimmomoduulia eikä sen pintaominaisuuksia. Nanotimanttien lisäys vähensi merkittävästi PMMA:n pinnankarheutta ja Candida albicans-kasvustoa.Tutkimus osoitti, että hampaattomuus lisääntyi iän myötä ja aiheutti alaleuan muodon muutoksia. Alhainen TQ-pitoisuus ei muuttanut PMMA:n taivutuslujuutta tai pintaominaisuuksia. Nanotimantit alensivat PMMA:n pinnankarheutta ja Candida albicansin kiinnittymistä siihen, mistä voisi olla apuna proteesistomatiitin ehkäisyssä.OsajulkaisutOsajulkaisut eivät sisälly väitöskirjan elektroniseen versioon.Fouda, S. M., Al-Harbi, F. A., Khan, S. Q., Virtanen, J. I., & Raustia, A. (2017). Missing Teeth and Prosthetic Treatment in Patients Treated at College of Dentistry, University of Dammam. International Journal of Dentistry, 2017, 1–6. https://doi.org/10.1155/2017/7593540Rinnakkaistallennettu versioFouda, S., Gad, M., El Tantawi, M., Virtanen, J., Sipila, K., & Raustia, A. (2019). Influence of tooth loss on mandibular morphology: A cone-beam computed tomography study. Journal of Clinical and Experimental Dentistry, 0–0. https://doi.org/10.4317/jced.55879Gad, M. M., Al‐Thobity, A. M., Fouda, S. M., Näpänkangas, R., & Raustia, A. (2018). Flexural and Surface Properties of PMMA Denture Base Material Modified with Thymoquinone as an Antifungal Agent. Journal of Prosthodontics, 29(3), 243–250. https://doi.org/10.1111/jopr.12967Fouda, S. M., Gad, M. M., Ellakany, P., Al-Thobity, A. M., Al-Harbi, F. A., Virtanen, J. I., & Raustia, A. (2019). The effect of nanodiamonds on candida albicans adhesion and surface characteristics of PMMA denture base material - an in vitro study. Journal of Applied Oral Science, 27. https://doi.org/10.1590/1678-7757-2018-0779Rinnakkaistallennettu versioAcademic dissertation to be presented with the assent of the Doctoral Training Committee of Health and Biosciences of the University of Oulu for public defence in the Markku Larmas auditorium (H1091) in Dentopolis, on 12 March 2021, at 12 noonAbstract
Tooth loss adversely affects patients’ quality of life and causes inevitable changes in the mandibular morphology. Polymethyl methacrylate (PMMA) is the most frequently used material of removable dentures. Denture stomatitis (DS) is a common clinical finding among denture wearers, particularly patients with debilitating diseases. Several fillers and nanofillers have been used to improve the physical, mechanical, antifungal, and antimicrobial properties of PMMA.
The aim of the present retrospective cross-sectional study was to determine the prevalence of tooth loss and the commonly used prosthetic constructions in 479 adult patients at the Department of Substitutive Dental Sciences (SDS), College of Dentistry, University of Dammam, currently Imam Abdulrahman Bin Faisal University, Dammam. The influence of tooth loss on mandibular morphology was studied by using cone-beam computed tomographic (CBCT) scans of 101 patients. The effect of addition of thymoquinone (TQ) and nanodiamonds (NDs) to PMMA on the flexural and surface properties of PPMA and their antifungal influence was tested through in vitro studies.
Edentulousness was recorded in 6%, a single edentulous arch in 8%, and partial edentulousness in 74% of the patients. Age and diabetes were significantly associated with edentulousness. Males had a significantly higher number of missing teeth compared to females. Kennedy class III was most common in the upper and lower jaw and was treated more often with fixed partial denture (FPD) than with removable partial denture (RPD). Larger gonial angle (GA) of the mandible was found in edentulous patients, in females and in older compared to dentate patients, males and younger patients. The addition of TQ to PMMA at low concentration did not significantly change the flexural strength, elastic modulus or surface properties of PMMA. The addition of NDs to PMMA significantly reduced surface roughness and the Candida albicans (C. albicans) count.
Edentulousness increased in old age and caused changes in mandibular morphology. TQ addition at low concentration did not change the flexural and surface properties of PMMA. NDs decreased the surface roughness of PMMA and Candida albicans adhesion, which could help in the prevention of denture stomatitis.Tiivistelmä
Hampaattomuus vaikuttaa potilaiden elämänlaatuun ja aiheuttaa alaleuan muodon muutoksia. Hampaattomuutta ja hammaspuutoksia voidaan hoitaa purennan kuntoutuksella irtoproteeseilla ja kiinteällä protetiikalla. Polymetyylimetakrylaatti (PMMA) on yleisimmin käytetty irtoproteesien materiaali. Suun sieni-infektio, proteesistomatiitti, on yleinen kliininen löydös proteesipotilailla ja erityisesti potilailla, joilla on yleiskuntoa heikentäviä sairauksia. Erilaisia lisämateriaaleja on käytetty parantamaan PMMA:n fysikaalisia, mekaanisia ja antimikrobisia ominaisuuksia.
Tämän retrospektiivisen poikittaistutkimuksen tarkoituksena oli kartoittaa hampaattomuuden ja hammaspuutosten esiintyvyys ja toteutetut proteettiset hoidot 479 saudiarabialaisella aikuispotilaalla, jotka oli hoidettu Dammanin yliopiston hammaslääketieteen laitoksella. Hammaspuutosten vaikutusta alaleuan muotoon tutkittiin 101 potilaan kartiokeilatietokonetomografia (KKTT) kuvista. Tymokinonin (thymoquinone, TQ) ja nanotimanttien (ND) lisäyksen vaikutusta PPMA:n taivutuslujuuteen ja pintaominaisuuksiin sekä niiden antimikrobisia ominaisuuksia tutkittiin in vitro kokein.
Täydellistä hampaattomuutta oli 6 %:lla, ylä- tai alaleuan hampaattomuutta 8 %:lla ja osittaista hampaattomuutta 74 %:lla potilaista. Hampaattomuutta lisäsivät merkittävästi potilaan ikä sekä yleissairauksista diabetes. Miehillä oli merkittävästi enemmän omia hampaita jäljellä kuin naisilla. Hammaspuutosten sijainnin luokittelussa Kennedyn luokka III oli yleisin sekä ylä- että alaleuassa ja puutos oli useammin hoidettu kiinteällä siltaratkaisulla kuin irrotettavalla osaproteesilla. Alaleuan leukakulma oli hampaattomilla, naisilla ja vanhemmilla potilailla suurempi kuin hampaallisilla, miehillä ja nuoremmilla potilailla.
Alhainen TQ-pitoisuus ei merkittävästi muuttanut PMMA:n taivutuslujuutta, kimmomoduulia eikä sen pintaominaisuuksia. Nanotimanttien lisäys vähensi merkittävästi PMMA:n pinnankarheutta ja Candida albicans-kasvustoa.
Tutkimus osoitti, että hampaattomuus lisääntyi iän myötä ja aiheutti alaleuan muodon muutoksia. Alhainen TQ-pitoisuus ei muuttanut PMMA:n taivutuslujuutta tai pintaominaisuuksia. Nanotimantit alensivat PMMA:n pinnankarheutta ja Candida albicansin kiinnittymistä siihen, mistä voisi olla apuna proteesistomatiitin ehkäisyssä
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
M-regularity and the fourier-mukai transform
No full textThis is a survey of M-regularity and its applications, expanding on lectures given by the second author at the Seattle conference, in August 2005, and at the Luminy workshop "Geometrie Algebrique Complexe", in October 2005
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Speculu[m] exemploru[m] ex diuersis libris in vnu[m] laboriose collectu[m].
No full textEerste blad (blanco) ontbreektThe author is probably Johannes Busch (CIBN)Titel uit incipit. Drukker en datum uit colofonBMC: Catalogue of books printed in the XVth century now in the British Museum I 226bGesamtkatalog der Wiegendrucke ; M42951Machiels, J. Catalogus van de boeken gedrukt vóór 1600 ; S 488Polain, M.-L. Catalogue des livres imprimé au 15e siècle ... ; 3574Europeana-GoogleBook
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