subject:(suspension)

1. Yeo, Kyong Min. Some aspects of suspension flows: Stokes to turbulent flows.

Degree: PhD, Applied Mathematics, 2011, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:11343/

► The force-coupling method (FCM) represents the dynamics of low Reynolds number suspension flows through a low-order, regularized multipole expansion and provides an effcient,matrix-free method to… (more)

▼ The force-coupling method (FCM) represents the dynamics of low Reynolds number suspension flows through a low-order, regularized multipole expansion and provides an effcient,matrix-free method to solve the grand mobility problem. In concentrated suspensions,strong short-range lubrication forces lead to ill-conditioned problems for determining hydrodynamic interactions. We present a new robust and effcient numerical scheme, lubrication-corrected FCM (LC-FCM), to solve for the hydrodynamic interactions in suspensions of a large number of hard spheres for any volume fractions under a geometric confinement. In LC-FCM, both the lubrication and far-field interactions are solved as a fully coupled system with only very small additional computation to the standard FCM. A solution procedure to expand LC-FCM for the simulation of finite-Reynolds-number suspension flows is proposed.With the goal of determining the wall effects on rheology and particle dynamics, LC-FCM simulations of suspensions of non-colloidal particles in a Couette flow at zero Reynolds number are performed. It is shown that the suspension field can be divided into three regions depending on the micro-structures; the wall region where a structured particle-layering is dominant, the core region in which the suspension field is quasi-homogeneous, and the buffer region which shows the characteristics of both the particle-layer and the shear structure. Rheological properties and suspension microstructures in each regions are presented. Due to the strong spatial coherency induced by the near-wall density fluctuations, the suspended particles exhibit anomalous diffusion. The diffusion in the wall-normal direction changes from superdiffusion for the particles next to the wall to subdiffusion for the particles near the core of the channel. The intermittent jumps and particle entrapment in near-wall particle layers are responsible for the anomalous diffusion near the wall, while the subdiffusion in the core is related to the overall confinement by the channel walls. At the volume fraction around phi = 0:48, particles near the wall assemble into strings which are organized as a simple hexagonal array. This crystal structure extends into the core of the channel as the volume fraction increases. Now, the relative viscosity becomes a function of both the volume fraction and the ordered state. It is found that the hexagonal structure can be altered by introducing an external torque applied to the suspended particles. The crystal structure is disturbed by negative torques, while positive torque has a favorable effect on the ordered state. Due to the significant changes in suspension micro-structures, rheological parameters such as the shear and vortex viscosities exhibit non-linear responses to the external torques.The dynamics of concentrated suspensions in Poiseuille flows are investigated. A statistical analysis indicates that there is an intermediate region between particle layers near the wall and a plug region in the core, in which the behavior of ensemble averaged… Advisors/Committee Members: Maxey, Martin (Director), Karniadakis, George (Reader), Morris, Jeffrey (Reader).

Subjects/Keywords: Suspension flows

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APA (6^th Edition):

Yeo, K. M. (2011). Some aspects of suspension flows: Stokes to turbulent flows. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11343/

Chicago Manual of Style (16^th Edition):

Yeo, Kyong Min. “Some aspects of suspension flows: Stokes to turbulent flows.” 2011. Doctoral Dissertation, Brown University. Accessed February 28, 2021. https://repository.library.brown.edu/studio/item/bdr:11343/.

MLA Handbook (7^th Edition):

Yeo, Kyong Min. “Some aspects of suspension flows: Stokes to turbulent flows.” 2011. Web. 28 Feb 2021.

Vancouver:

Yeo KM. Some aspects of suspension flows: Stokes to turbulent flows. [Internet] [Doctoral dissertation]. Brown University; 2011. [cited 2021 Feb 28]. Available from: https://repository.library.brown.edu/studio/item/bdr:11343/.

Council of Science Editors:

Yeo KM. Some aspects of suspension flows: Stokes to turbulent flows. [Doctoral Dissertation]. Brown University; 2011. Available from: https://repository.library.brown.edu/studio/item/bdr:11343/

Victoria University of Wellington

2. Broadbent, Lynda. Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools.

Degree: 2013, Victoria University of Wellington

URL: http://hdl.handle.net/10063/2670

► This study investigated the decision making processes used by boards of trustees in schools across a range of deciles in a region of New Zealand.… (more)

▼ This study investigated the decision making processes used by boards of trustees in schools across a range of deciles in a region of New Zealand. The research is framed by two objectives: to gain a broader insight and understanding of the processes used by boards of trustees when making decisions in order to inform a more robust governance system for schools that better responds to the development needs of school board members and educational needs of students; and to explore the ways i.e. skills, knowledge and experience used, in which decisions are made by principals and boards of trustees to stand-down, suspend, exclude and expel students in low/high decile schooling contexts in New Zealand. The inquiry is positioned within a critical educational paradigm, employs a mixed method approach incorporating a case study and survey, and uses a thematic analysis approach to identify themes. The research questions that guide this study are: what factors are the enablers or barriers that influence the decision making process of discipline committees?; how does the current support offered to boards of trustees empower them to make qualified decisions about continuing suspensions or excluding students or are there gaps in the support offered? And; what impact, if any, does the socio-economic area of a school have on the degree of knowledge and capability applied by its trustees when deciding to suspend or exclude/expel students? Data suggest school boards that have followed a sound process incorporating principles of natural justice and that have used quality documentation positively influence the outcome of a discipline committee meeting. The gaps in the current support offered to boards could be addressed by key stakeholders like the Ministry of Education and the New Zealand School Trustees Association committing resources to professional development for board of trustee members. It is often boards of low decile schools that lack confidence in their capability when making decisions about continuing suspensions, excluding and expelling students however, they also believe they are the right people to make that decision. Advisors/Committee Members: Thornton, Kate.

Subjects/Keywords: BOT's; Suspension

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APA (6^th Edition):

Broadbent, L. (2013). Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2670

Chicago Manual of Style (16^th Edition):

Broadbent, Lynda. “Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools.” 2013. Masters Thesis, Victoria University of Wellington. Accessed February 28, 2021. http://hdl.handle.net/10063/2670.

MLA Handbook (7^th Edition):

Broadbent, Lynda. “Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools.” 2013. Web. 28 Feb 2021.

Vancouver:

Broadbent L. Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools. [Internet] [Masters thesis]. Victoria University of Wellington; 2013. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10063/2670.

Council of Science Editors:

Broadbent L. Investigation into the Decision Making Process of Boards of Trustees Relating to the Suspension, Exclusion and Expulsion of Students in New Zealand Schools. [Masters Thesis]. Victoria University of Wellington; 2013. Available from: http://hdl.handle.net/10063/2670

3. Gorlier, François. Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams.

Degree: Docteur es, Physique, 2017, Université Paris-Est

URL: http://www.theses.fr/2017PESC1227

►

L’objet de cette thèse expérimentale est l’étude de la rhéologie des mousses de fluides complexes. L’utilisation de matériaux modèles permet de découpler les effets des… (more)

▼

L’objet de cette thèse expérimentale est l’étude de la rhéologie des mousses de fluides complexes. L’utilisation de matériaux modèles permet de découpler les effets des bulles et du fluide complexe sur le comportement rhéologique des mousses. Nous caractérisons notamment le module élastique et la contrainte seuil des mousses de suspension de particules et des mousses d’émulsion. La rhéologie des mousses de particules est fortement dépendante du rapport entre la taille des particules et la taille du réseau interstitiel de la mousse (nœud et bords de Plateau). Lorsque les particules sont suffisamment petites pour être inclues dans le réseau de la mousse, elles peuvent former un squelette granulaire compact. Cette structure mise en place par le drainage de la suspension augmente sensiblement la valeur du module élastique des mousses de particules. En effet, le confinement exercé par les bulles sur le squelette granulaire est à l’origine de l’élasticité de la matrice granulaire. Lorsque taille des particules augmente, ces dernières sont exclues du réseau de la mousse et le module élastique des mousses de particules diminue avec la disparition de la matrice. Les mousses de particules avec un squelette granulaire possèdent l’avantage d’avoir deux sources d’élasticité distinctes : l’élasticité capillaire des bulles et élasticité du squelette granulaire. On peut sommer ces deux contributions pour modéliser le module élastique macroscopique de la mousse, ce n’est pas le cas des mousses d’émulsion. En effet, il existe un couplage entre bulles et la matrice d’émulsion. L’introduction des nombres capillaire élastique et capillaire de Bingham permet de décrire l’évolution respective du module élastique et de la contrainte seuil des mousses d’émulsion. Enfin, l’analyse de la contrainte seuil de ces deux types de mousses permet d’identifier la matrice de particules comme étant un fluide à seuil, et forme un parallèle intéressant entre ces deux mousses à priori dissemblables

The subject of this experimental thesis is the study of the rheology of complex fluid foams. The use of model materials allows decoupling the effects of the bubbles and the complex fluid on the rheological behavior of the foams. In particular, we characterize the elastic modulus and the yield stress of particle-loaded foams and emulsion foams. The rheology of particle-loaded foams is highly dependent on the size ratio between the particle and the interstitial foam network (node and the so called “Plateau borders”). When the particles are small enough to be included in the foam network, they can form a compact granular skeleton. This structure put in place by the drainage of the suspension substantially increases the value of the elastic modulus of the particle-loaded foams. Indeed, the confinement exerted by the bubbles on the granular skeleton is at the origin of the elasticity of the matrix (skeleton). As the size of the particles increases, they are excluded from the foam network and the elastic modulus of the foam particles decreases with the…

Advisors/Committee Members: Pitois, Olivier (thesis director).

Subjects/Keywords: Rhéologie; Mousse; Suspension; Rheology; Foam; Suspension

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APA (6^th Edition):

Gorlier, F. (2017). Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2017PESC1227

Chicago Manual of Style (16^th Edition):

Gorlier, François. “Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams.” 2017. Doctoral Dissertation, Université Paris-Est. Accessed February 28, 2021. http://www.theses.fr/2017PESC1227.

MLA Handbook (7^th Edition):

Gorlier, François. “Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams.” 2017. Web. 28 Feb 2021.

Vancouver:

Gorlier F. Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams. [Internet] [Doctoral dissertation]. Université Paris-Est; 2017. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2017PESC1227.

Council of Science Editors:

Gorlier F. Rhéologie des mousses de fluides complexes : Rheology of complex fluid foams. [Doctoral Dissertation]. Université Paris-Est; 2017. Available from: http://www.theses.fr/2017PESC1227

4. Sayede Hussein, Assem. Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension.

Degree: Docteur es, Droit, 2013, Paris 1

URL: http://www.theses.fr/2013PA010286

►

Douze ans constituent un délai raisonnable pour faire un bilan global de la procédure de l'article L. 521-1 du Code de justice administrative. L'examen des… (more)

▼

Douze ans constituent un délai raisonnable pour faire un bilan global de la procédure de l'article L. 521-1 du Code de justice administrative. L'examen des évolutions jurisprudentielles et l'analyse des dernières dispositions législatives font percevoir l'élargissement du domaine d'application du mécanisme qui est, dans l'ensemble, cohérent. Doté de nouvelles prérogatives subtiles et redoutables, le juge du référé-suspension assume parfaitement son rôle du juge de l'équilibre et de la nécessité. Il est le garant de la protection provisoire. L'efficacité est le noyau dur de sa fonction. Le changement d'état d'esprit et d'attitude du juge administratif a eu des conséquences à la fois théoriques et pratiques en la matière. De part sa gestion rapide, son accessibilité, son mode de raisonnement et sa créativité, le juge du référé-suspension est juge de la rupture. À cela, s'ajoutent la préoccupation du juge des effets de ses interventions et la flexibilité des mesures prononcées. Disposant ainsi d'une véritable culture de l'urgence, le juge a gagné de la crédibilité et de la légitimité et est, surtout, devenu un concurrent redoutable face à ses homologues, que ce soit au niveau national ou européen. Bien que performant, le juge des référés n'est pas au bout de ses potentialités. La continuité entre le référé- suspension et son ancêtre est tangible. Le système reste imparfait. Nombreux en sont les points perfectibles. Pour y remédier, le juge ainsi que le législateur doivent rester en mouvement.

Twelve years represent reasonable time to make a global report on the procedure of article L.521-1 of Code of adminstrative law. The examination of case law evolution and the analysis of last legal measures allow us to detect an enlargment of field which is consistent. Equipped with new subtly and dreaded prerogatives, summary's judge of suspension of administrative act, assumes perfectly his duty of judging balance and necessity. He is the guarantor of the temporary protection. Efficacity constitutes his function'hard core. The change of state of mind and attitude of administrative judge had consequences both theorical and practical in the subject. Due to his fast management, his accessibility, his way of reasoning and its creativity, the summary's judge of suspension is the judge of breach. Beyond that, are added the judge's preoccupation of teh effects of his intervention and the flexibility of delivered sentences. The judge has won credibility and legitimacy by having a real cukture of emrgency and became a tremendous rival opposite to his homolog on nation-wide or European-wide. Although efficient, summary's judge has more potentialities. The continuity from summary-suspension and his ancestor is real. The system is still imperfect. To solve this, the judge and lawmaker have to stay in alert.

Advisors/Committee Members: Pontier, Jean-Marie (thesis director).

Subjects/Keywords: Procès administratif; Juge du référé-suspension; Référé-suspension; Summary's judge of suspension; Summary-suspension; 340

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APA (6^th Edition):

Sayede Hussein, A. (2013). Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension. (Doctoral Dissertation). Paris 1. Retrieved from http://www.theses.fr/2013PA010286

Chicago Manual of Style (16^th Edition):

Sayede Hussein, Assem. “Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension.” 2013. Doctoral Dissertation, Paris 1. Accessed February 28, 2021. http://www.theses.fr/2013PA010286.

MLA Handbook (7^th Edition):

Sayede Hussein, Assem. “Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension.” 2013. Web. 28 Feb 2021.

Vancouver:

Sayede Hussein A. Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension. [Internet] [Doctoral dissertation]. Paris 1; 2013. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2013PA010286.

Council of Science Editors:

Sayede Hussein A. Le juge administratif : juge du référé-suspension : Administrative judge : summary's judge of suspension. [Doctoral Dissertation]. Paris 1; 2013. Available from: http://www.theses.fr/2013PA010286

University of Manchester

5. Zhang, Yi. Suspension Dewatering with Aggregate Densification.

Degree: 2014, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:232270

► This thesis concerns design of two pieces of suspension dewatering equipment (i.e. transient batch settlers and steady state continuous gravity thickeners). In a transient batch… (more)

▼ This thesis concerns design of two pieces of suspension dewatering equipment (i.e. transient batch settlers and steady state continuous gravity thickeners). In a transient batch settler, very slow densification of aggregates within the suspension is considered whilst the drag on the solids in the suspension is assumed to be negligible. The interface of the suspension is then determined by a balance between gravity and the gradient of the compressive yield stress of the gelled suspension. The compressive yield stress functional form in general could be either a weakly gelled formula, or a strongly gelled formula. These formulae differ in the way they behave for solids concentrations in the neighbourhood of the suspension gel point. The effects of the above two gel formulae, the evolution of the compressive yield stress functional form over time during aggregate densification, different initial suspension heights, and different initial feed solids volume fractions upon the predictions of consolidated bed structures and solids volume fractions obtained at the bottom of a batch settler, and upon the evolution of the heights of the suspension and the consolidated bed have been explored. A sufficiently tall initial suspension height might lead to insignificant increases in the solids volume fractions obtained at the bottom of batch settlers after time-dependent aggregate densification. The interfaces of the suspension and the consolidation zone coincide after aggregate densification if the gel point, which increases with time, is larger than the initial feed solids volume fractions. Moreover, the maximum permitted underflow solids fluxes predicted from steady state thickeners have been investigated and compared. Pre-shearing of aggregates which densifies aggregates to have smaller diameters upon entering the thickener is necessary if large underflow solids fluxes and small underflow solids volume fractions are specified. The solids volume fraction at the top of the consolidated bed which is the densified gel point is influenced by the extent of pre-shearing of aggregates. An algorithm for determining this densified gel point has also been developed. In reality, thickeners contain not just a consolidating bed, but also a hindered settling region above it. When the hindered settling region is considered in a thickener, the effects of the extent of aggregate densification that has occurred in the hindered settling region and how that impacts upon thickener performance and sludge rheological properties have been explored in this thesis. A new algorithm for predicting the densified gel point obtained at the top of the consolidated bed has been developed when the hindered settling region is present. The effects of underflow solids volume fractions, aggregate densification rate parameters and pre-shearing of aggregates upon the predictions of maximum permitted underflow solids fluxes, sludge rheological properties, and thickener performance have been explored. The predictions of thickener performance using both the weakly and… Advisors/Committee Members: MARTIN, ALASTAIR AD, Grassia, Paul, Martin, Alastair.

Subjects/Keywords: Suspension;

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APA (6^th Edition):

Zhang, Y. (2014). Suspension Dewatering with Aggregate Densification. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:232270

Chicago Manual of Style (16^th Edition):

Zhang, Yi. “Suspension Dewatering with Aggregate Densification.” 2014. Doctoral Dissertation, University of Manchester. Accessed February 28, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:232270.

MLA Handbook (7^th Edition):

Zhang, Yi. “Suspension Dewatering with Aggregate Densification.” 2014. Web. 28 Feb 2021.

Vancouver:

Zhang Y. Suspension Dewatering with Aggregate Densification. [Internet] [Doctoral dissertation]. University of Manchester; 2014. [cited 2021 Feb 28]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:232270.

Council of Science Editors:

Zhang Y. Suspension Dewatering with Aggregate Densification. [Doctoral Dissertation]. University of Manchester; 2014. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:232270

University of Illinois – Urbana-Champaign

6. Shoffstall, Grant W. Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979.

Degree: PhD, Sociology, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90878

► This dissertation offers an interpretation of cryonic suspension, or "cryonics," the practice of preserving human corpses by way of perfusing them with chemical protectants and… (more)

▼ This dissertation offers an interpretation of cryonic suspension, or "cryonics," the practice of preserving human corpses by way of perfusing them with chemical protectants and gradually subjecting them, at the pronouncement of legal death, to extremely low temperatures (-360◦ F, -196◦ C), which are then controlled and maintained over the long term by liquid nitrogen filled "cryocapsules." Cryonics is ultimately motivated by the hope that medicine will at some future point achieve the requisite kinds and levels of technology to facilitate the rejuvenation and "reanimation" of the "deanimated," those who lay in cryonic suspension. The interpretation of cryonic suspension that I set forth departs quite abruptly from existing academic engagements with the practice—it is rooted in a wealth of previously unutilized archival materials from the 1960s and 70s, all of which are virtually inaccessible to those operating outside the cryonics community. The interpretation cuts across, takes as its substantive focus, and is periodized with respect to three different though related moments in the history of cryonic suspension: 1) the emergence of cryonics in 1962 and the previously unexamined ties of the practice to the postwar science of cybernetics and NASA’s Cyborg Spaceflight Program; 2) the subsequent performance and material instantiation of cryonics, marked by the plights of those who froze and were frozen throughout the American 1960s and 70s; and, tied to and fomented by the lattermost especially, 3) catastrophic failure, marked by the collapse of the Cryonics Society of New York in 1974, and the discovery, in 1979, of several abandoned, thawed, and radically decomposed cryonics "patients" interned in the Cryonics Society of California’s underground "cryo-crypt" at the Oakwood Memorial Park Cemetery in Chatsworth, California; what is infamously known in cryonics circles as the "Chatsworth Scandal." The dissertation as such offers several novel interpretive claims about cryonic suspension, all of which take shape in sustained dialogue with cultural studies of science and technology, and especially the history of cybernetics. The dissertation’s principle theoretical intervention involves deploying these claims to offer an alternative to prevailing interpretations of cryonic suspension, both popular and academic, as an unintelligible pseudoscientific "anomaly." I argue to the contrary that cryonic suspension emerged in a space produced by what Anthony Giddens and especially Zygmunt Bauman regard as the principle constitutive feature of modern social life—the ultimately futile yet pervasive modern impulse to sequester death, dying, and the dead from the realm of the living. I furthermore argue that the distinctly modern logic of sequestration is replicated in the reigning epistemic norms and practices that shape sociological theory and research proper, in that academic sociology, whatever its professed stripes and leanings, tends overwhelmingly to regard death, narrowly conceived in decidedly modern terms as an "end… Advisors/Committee Members: Gille, Zsuzsa (advisor), Dill, Brian (Committee Chair), Denzin, Norman K. (committee member), Ghamari-Tabrizi, Behrooz (committee member), Stivers, Richard (committee member).

Subjects/Keywords: Cryonic Suspension; Cybernetics

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APA (6^th Edition):

Shoffstall, G. W. (2016). Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90878

Chicago Manual of Style (16^th Edition):

Shoffstall, Grant W. “Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979.” 2016. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed February 28, 2021. http://hdl.handle.net/2142/90878.

MLA Handbook (7^th Edition):

Shoffstall, Grant W. “Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979.” 2016. Web. 28 Feb 2021.

Vancouver:

Shoffstall GW. Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/2142/90878.

Council of Science Editors:

Shoffstall GW. Failed futures, broken promises, and the prospect of cybernetic immortality: toward an abundant sociological history of cryonic suspension, 1962-1979. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90878

7. Griffin-Gay, Monique. An Evaluation Of The In-School Suspension Program At One High School.

Degree: EdD Doctor of Education, Educational Leadership, 2019, National-Louis University

URL: https://digitalcommons.nl.edu/diss/351

► In this program evaluation, I examined the effectiveness of in school suspension (ISS) program at one high school. The literature reviewed argues although ISS… (more)

Subjects/Keywords: education; in-school suspension; suspension; behavior modification; out of school suspension; Educational Leadership

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APA (6^th Edition):

Griffin-Gay, M. (2019). An Evaluation Of The In-School Suspension Program At One High School. (Doctoral Dissertation). National-Louis University. Retrieved from https://digitalcommons.nl.edu/diss/351

Chicago Manual of Style (16^th Edition):

Griffin-Gay, Monique. “An Evaluation Of The In-School Suspension Program At One High School.” 2019. Doctoral Dissertation, National-Louis University. Accessed February 28, 2021. https://digitalcommons.nl.edu/diss/351.

MLA Handbook (7^th Edition):

Griffin-Gay, Monique. “An Evaluation Of The In-School Suspension Program At One High School.” 2019. Web. 28 Feb 2021.

Vancouver:

Griffin-Gay M. An Evaluation Of The In-School Suspension Program At One High School. [Internet] [Doctoral dissertation]. National-Louis University; 2019. [cited 2021 Feb 28]. Available from: https://digitalcommons.nl.edu/diss/351.

Council of Science Editors:

Griffin-Gay M. An Evaluation Of The In-School Suspension Program At One High School. [Doctoral Dissertation]. National-Louis University; 2019. Available from: https://digitalcommons.nl.edu/diss/351

Ruhr Universität Bochum

8. Ejtehadi, Mohammad Hesam. Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints.

Degree: 2012, Ruhr Universität Bochum

URL: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-37864

► Das erste Ziel dieser Arbeit ist die experimentelle Identifizierung der Hauptursachen der Steifigkeitsabnahme in einem spezifischen sphärischen Fahrwerksgelenk während der Einlaufphase. Um die Hauptursachen zu… (more)

Subjects/Keywords: Polyoxymethylene; Suspension; Fahrwerk; Steifigkeit; Sensitivitätsanalyse

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APA (6^th Edition):

Ejtehadi, M. H. (2012). Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints. (Thesis). Ruhr Universität Bochum. Retrieved from http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-37864

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ejtehadi, Mohammad Hesam. “Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints.” 2012. Thesis, Ruhr Universität Bochum. Accessed February 28, 2021. http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-37864.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ejtehadi, Mohammad Hesam. “Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints.” 2012. Web. 28 Feb 2021.

Vancouver:

Ejtehadi MH. Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints. [Internet] [Thesis]. Ruhr Universität Bochum; 2012. [cited 2021 Feb 28]. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-37864.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ejtehadi MH. Experimental analysis and numerical simulation of the running-in phase in spherical suspension joints. [Thesis]. Ruhr Universität Bochum; 2012. Available from: http://nbn-resolving.de/urn/resolver.pl?urn=urn:nbn:de:hbz:294-37864

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cornell University

9. Qi, Ling. Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions.

Degree: M.S., Chemical Engineering, Chemical Engineering, 2014, Cornell University

URL: http://hdl.handle.net/1813/37099

► Two simulation techniques that are used to approach two very different suspension problems - continuum scale 'active fluids' contain living cells that can respond to… (more)

Subjects/Keywords: Dynamic simulation; Particulate suspension

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APA (6^th Edition):

Qi, L. (2014). Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/37099

Chicago Manual of Style (16^th Edition):

Qi, Ling. “Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions.” 2014. Masters Thesis, Cornell University. Accessed February 28, 2021. http://hdl.handle.net/1813/37099.

MLA Handbook (7^th Edition):

Qi, Ling. “Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions.” 2014. Web. 28 Feb 2021.

Vancouver:

Qi L. Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions. [Internet] [Masters thesis]. Cornell University; 2014. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/1813/37099.

Council of Science Editors:

Qi L. Dynamics Of Orientable Particulate Suspensions: Continuum Simulations Of ‘Living’ Fluids And Meso-Scale Simulations Of Anisotropic Particle Suspensions. [Masters Thesis]. Cornell University; 2014. Available from: http://hdl.handle.net/1813/37099

Nelson Mandela Metropolitan University

10. Grigor, Charles Miller. Suspension in the disciplinary process.

Degree: Faculty of Law, 2013, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/d1020966

► Employers often wrestle with whether or not to suspend an employee and the issue is what needs to be done before an employee could be… (more)

▼ Employers often wrestle with whether or not to suspend an employee and the issue is what needs to be done before an employee could be suspended. Suspending an employee means to deprive him or her from entering the work place for a period of time, due to alleged misconduct which, due to the nature of the alleged misconduct and in the opinion of the employer, warrants the employee not to be in or near the workplace. Section 23 of the Constitution of the Republic of South Africa, affords every employee the right to fair labour practices and this right should be affected by the Labour Relations Act, 1995 (LRA). Unfortunately the LRA only deals with the unfair suspension under the definition of an unfair labour practice in section 186(2) by stating that the meaning of unfair labour practice is any act or omission that arises between an employer and an employee involving the unfair suspension of an employee or any other unfair disciplinary action short of dismissal in respect of an employee. The focus of this document thus is to scrutinise the lack of legislative guidelines relating to the procedural fairness of suspension of employees. It would thus necessitate an overview of the nature of suspension which would be discussed in length by way of referring to the right to suspend an employee as well as the application of the courts in such cases, the distinction between suspension as a preventative, or as a punitive measure and the possibility of suspension resulting in an unfair labour practice. The distinction between preventative and punitive suspensions are highlighted. Since it is not clear when, how and for how long an employee may be suspended, in the absence of clear guidelines, employers have to turn to the courts’ interpretation to get the necessary guidance on the application of a suspension. In order to ensure that the employer, experiencing unnecessary difficulty with the implementation of procedural fairness of suspensions, in a meaningful way, be assisted by the proposal that legislature consider to address this by including clear guidelines under Item 3 of Schedule 8 of the LRA Advisors/Committee Members: Kotze, Marius.

Subjects/Keywords: Employees – Suspension; Labor discipline

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APA (6^th Edition):

Grigor, C. M. (2013). Suspension in the disciplinary process. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1020966

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Grigor, Charles Miller. “Suspension in the disciplinary process.” 2013. Thesis, Nelson Mandela Metropolitan University. Accessed February 28, 2021. http://hdl.handle.net/10948/d1020966.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Grigor, Charles Miller. “Suspension in the disciplinary process.” 2013. Web. 28 Feb 2021.

Vancouver:

Grigor CM. Suspension in the disciplinary process. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2013. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10948/d1020966.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Grigor CM. Suspension in the disciplinary process. [Thesis]. Nelson Mandela Metropolitan University; 2013. Available from: http://hdl.handle.net/10948/d1020966

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

11. Freelin, Brittany Nicole. THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL.

Degree: 2018, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/15199bnf5

► There is an increasing interest in the importance of social-emotional skills and school readiness for youth and a growing concern about the frequent use of… (more)

Subjects/Keywords: School Readiness; Suspension; Exclusionary Discipline

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APA (6^th Edition):

Freelin, B. N. (2018). THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15199bnf5

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Freelin, Brittany Nicole. “THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL.” 2018. Thesis, Penn State University. Accessed February 28, 2021. https://submit-etda.libraries.psu.edu/catalog/15199bnf5.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Freelin, Brittany Nicole. “THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL.” 2018. Web. 28 Feb 2021.

Vancouver:

Freelin BN. THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL. [Internet] [Thesis]. Penn State University; 2018. [cited 2021 Feb 28]. Available from: https://submit-etda.libraries.psu.edu/catalog/15199bnf5.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Freelin BN. THE EFFECTS OF SCHOOL READINESS ON SUSPENSION IN ELEMENTARY SCHOOL. [Thesis]. Penn State University; 2018. Available from: https://submit-etda.libraries.psu.edu/catalog/15199bnf5

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

12. Karimi Eskandary, Peyman. Interconnected Air Suspensions with Independent Height and Stiffness Tuning.

Degree: 2014, University of Waterloo

URL: http://hdl.handle.net/10012/8414

► Suspensions play a crucial role in vehicle comfort and stability. Different types of suspensions have been proposed to fulfill the essential characteristics of vehicle suspensions.… (more)

▼ Suspensions play a crucial role in vehicle comfort and stability. Different types of suspensions have been proposed to fulfill the essential characteristics of vehicle suspensions. A semi-active suspension with adjustable damper improves the performance of a suspension in different conditions and it is better than a passive suspension in terms of ride comfort and handling. Furthermore, it is not as expensive and complicated as an active suspension. Semi-active suspensions rely on adjustable damping coefficient. A new type of air suspension with independent ride height and stiffness tuning has been developed recently. By using two air chambers in the suspension system, ride height of vehicle and stiffness of suspension can be adjusted independently and simultaneously. The conventional air suspension systems use compressor to pump the air into a single flexible rubber airbag and by inflating the air, the chassis will be raised from the axle (ride height control). In this type of suspensions, the stiffness of spring is not under control. In the new air suspension system, by controlling the air pressure on both chambers, one can tune the suspension stiffness and the ride height of the vehicle at the same time for different driving conditions. The air suspension is also able to maintain the vehicle body at the same height and natural frequency for different load or number of passengers. This thesis discusses about the design analysis of an air suspension with ride height and stiffness tuning. The analytical formulation is developed for the optimum design of the new air suspension system. In this thesis, the interconnection between the pressurized chambers of the new air suspension with ride height and stiffness tuning is studied to further improve the performance. Proper interconnection of air springs can help the suspension system to distribute the load between tires more evenly on rough roads or uneven surfaces. Different configurations in air spring interconnection have different impact on the handling and tire load distribution. To study the effect of air spring interconnection configurations on tires load distribution and vehicle handling, a general mathematical model is developed. This model is used to compare various configurations in detail. Results show that interconnection could improve tire load distributions greatly. It is also shown that improving tire load distribution will deteriorate roll stiffness that in turn deteriorate vehicle handling at higher speeds. Since on rough roads, vehicle’s speed is necessarily low, interconnection will not have adverse effects on vehicle handling when activated.

Subjects/Keywords: Interconnection; Air Suspension; Height; Stiffness

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APA (6^th Edition):

Karimi Eskandary, P. (2014). Interconnected Air Suspensions with Independent Height and Stiffness Tuning. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/8414

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Karimi Eskandary, Peyman. “Interconnected Air Suspensions with Independent Height and Stiffness Tuning.” 2014. Thesis, University of Waterloo. Accessed February 28, 2021. http://hdl.handle.net/10012/8414.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Karimi Eskandary, Peyman. “Interconnected Air Suspensions with Independent Height and Stiffness Tuning.” 2014. Web. 28 Feb 2021.

Vancouver:

Karimi Eskandary P. Interconnected Air Suspensions with Independent Height and Stiffness Tuning. [Internet] [Thesis]. University of Waterloo; 2014. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10012/8414.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Karimi Eskandary P. Interconnected Air Suspensions with Independent Height and Stiffness Tuning. [Thesis]. University of Waterloo; 2014. Available from: http://hdl.handle.net/10012/8414

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Colorado

13. Straw, Asher Hamilton. The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces.

Degree: MS, 2017, University of Colorado

URL: https://scholar.colorado.edu/iphy_gradetds/67

► Bicycle suspension elements smooth the vibrations generated by irregularities in the road or trail surface. However, it is unknown whether the energy put into… (more)

▼ Bicycle suspension elements smooth the vibrations generated by irregularities in the road or trail surface. However, it is unknown whether the energy put into the suspension system exacts a metabolic or mechanical cost. Here, I investigated the effects of suspension systems on the energetics and mechanics of riding bicycles on smooth uphill surfaces in both the sitting and standing positions. Chapter 1: Twelve male cyclists rode at 3.35m/s up a motorized treadmill inclined to 7% grade. All subjects used the same road bike equipped with a steering tube front suspension system. Each subject completed six 5 minute trials separated by 5-minute rest periods, with the suspension system in rigid (locked) and compliant settings. I measured their metabolic rates from oxygen consumption and carbon dioxide production. I also measured their mechanical power outputs. In the sitting position, metabolic power averaged 13.10±0.54 (rigid) and 13.21±0.54 W/kg (compliant). Mechanical power averaged 2.83±0.06 W/kg in both conditions. During standing, metabolic power averaged 14.22±0.73 (rigid) and 14.17±0.81 W/kg (compliant). Mechanical power averaged 2.86±0.03 and 2.87±0.05 W/kg respectively. None of these differences were statistically significant. Chapter 2: Eight male and four female mountain bikers rode at 2.77m/s up a motorized treadmill inclined to 7% grade. Subjects rode a dual-suspension mountain bike. Each subject completed six 5 minute trials separated by 5-minute rest periods, with the suspension set to firm and soft conditions. I measured their metabolic rates from oxygen consumption and carbon dioxide production. I also measured their mechanical power outputs. In the sitting position, metabolic power averaged 11.38±0.48 (firm) and 11.44±0.49 W/kg (soft). Mechanical power averaged 2.54±0.20 W/kg in both conditions. During standing, metabolic power averaged 12.46±0.62 (firm) and 12.63±0.90 W/kg (soft). Mechanical power averaged 2.57±0.21W/kg in both conditions. None of these differences were statistically significant. In conclusion, suspension systems in both road and mountain bikes had no effect (p>0.10) on the metabolic or mechanical power required for bicycle riding on smooth uphill surfaces in either seated or standing positions. Advisors/Committee Members: Rodger Kram, Thomas LaRocca, Alena Grabowski.

Subjects/Keywords: suspension; bicycles; metabolic rates; Biomechanics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Straw, A. H. (2017). The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces. (Masters Thesis). University of Colorado. Retrieved from https://scholar.colorado.edu/iphy_gradetds/67

Chicago Manual of Style (16^th Edition):

Straw, Asher Hamilton. “The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces.” 2017. Masters Thesis, University of Colorado. Accessed February 28, 2021. https://scholar.colorado.edu/iphy_gradetds/67.

MLA Handbook (7^th Edition):

Straw, Asher Hamilton. “The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces.” 2017. Web. 28 Feb 2021.

Vancouver:

Straw AH. The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces. [Internet] [Masters thesis]. University of Colorado; 2017. [cited 2021 Feb 28]. Available from: https://scholar.colorado.edu/iphy_gradetds/67.

Council of Science Editors:

Straw AH. The Effects of Suspension on the Energetics and Mechanics of Riding Bicycles on Smooth Uphill Surfaces. [Masters Thesis]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/iphy_gradetds/67

University of Ballarat

14. Kuznetsov, Alexey. Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties.

Degree: 2011, University of Ballarat

URL: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62065

► There is a considerable body of research on the modelling and optimization of vehicle suspension systems. The main focus in most publications is an optimization… (more)

▼ There is a considerable body of research on the modelling and optimization of vehicle suspension systems. The main focus in most publications is an optimization procedure undertaken to find the values of the model parameters that satisfy certain operating requirements. However, the methods proposed do not always offer a broad variety of concepts and techniques. Most of these methods aim to find optimal values of suspension system parameters with respect to some optimality criteria that are often not explicitly formulated. In addition, none of the reviewed works utilizes existing guidelines and standards, on the vibration exposure on humans, to formulate optimization criteria. This would produce more applicable results of industrial and commercial merit. It is also important to mention that only a limited number of works offered numerical examples where real road conditions are employed for the optimization procedure. The presented thesis is devoted to development of a methodology for the optimization of vehicle suspension systems on the basis of two criteria: the improved comfort levels and advanced steering properties. The developed methodology is applied to various Australian roads, including highways, city roads, and country roads. It consists of a few steps as detailed below. The first step features the construction of a mathematical model for the vibration analysis of the vehicle suspension system. In the thesis different types of the quarter-car models and different biomechanical models for the driver are considered. All models considered are described by the corresponding systems of linear differential equations. The second step is undertaken to construct criteria to evaluate the comfort levels for the driver and passengers. For this purpose, a criterion was adopted from the ISO 2631 (1997) standards to quantify the comfort levels during a ride. To utilize this criterion, the steady-state vibrations, obtained from the system Differential Equations for various excitation frequencies, have been combined via a novel mathematical approach undertaken to eliminate the need to include the time of exposure in the calculations. This will enhance the applicability of the proposed method and simplify its implementation. 3 The third step is devoted to constructing a criterion to quantify the steering properties of a vehicle. The developed formula, which is based on an engineering understanding of how wheel vibration impacts the force interaction between the wheel and road, is proposed for the first time in the current thesis. The formula will serve as a criterion for advanced handling performance of passenger vehicles. The final step is undertaken to formulate optimization problems for finding the suspension system parameters which ensure improved comfort levels as well as admissible steering performance for the vehicle. For the analysis, these two criteria were employed to construct multi-criteria optimization problems and also singlecriteria optimization problems that incorporate both criteria. The developed methodology…

Subjects/Keywords: Springs and suspension; Automobiles

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APA (6^th Edition):

Kuznetsov, A. (2011). Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties. (Thesis). University of Ballarat. Retrieved from http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62065

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kuznetsov, Alexey. “Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties.” 2011. Thesis, University of Ballarat. Accessed February 28, 2021. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62065.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kuznetsov, Alexey. “Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties.” 2011. Web. 28 Feb 2021.

Vancouver:

Kuznetsov A. Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties. [Internet] [Thesis]. University of Ballarat; 2011. [cited 2021 Feb 28]. Available from: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62065.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kuznetsov A. Optimization of the vehicle suspension systems for improved comfort levels and advanced steering properties. [Thesis]. University of Ballarat; 2011. Available from: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/62065

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Karlstad University

15. Jonsson, Alexander. Design of a trim- and tilt suspension system for a diesel driven outboard engine.

Degree: Science and Technology (starting 2013), 2013, Karlstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31593

► This thesis has been done at the company MarineDiesel Sweden, which is currently developing a diesel-powered outboard engine. The focus of the thesis is… (more)

Subjects/Keywords: Outboard; Diesel; Suspension; Vibration damping

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APA (6^th Edition):

Jonsson, A. (2013). Design of a trim- and tilt suspension system for a diesel driven outboard engine. (Thesis). Karlstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31593

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jonsson, Alexander. “Design of a trim- and tilt suspension system for a diesel driven outboard engine.” 2013. Thesis, Karlstad University. Accessed February 28, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31593.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jonsson, Alexander. “Design of a trim- and tilt suspension system for a diesel driven outboard engine.” 2013. Web. 28 Feb 2021.

Vancouver:

Jonsson A. Design of a trim- and tilt suspension system for a diesel driven outboard engine. [Internet] [Thesis]. Karlstad University; 2013. [cited 2021 Feb 28]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31593.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jonsson A. Design of a trim- and tilt suspension system for a diesel driven outboard engine. [Thesis]. Karlstad University; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-31593

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

16. Singh, Manvika (author). Suspended Graphene Membranes For Electrostatically Actuated Resonators.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:d5f10ea4-436d-4f1c-badf-c5be8b634f20

►

As we are moving towards nano level devices, there is a greater need to miniaturize resonators. Miniaturization of resonators helps to attain higher sensitivity, lower… (more)

▼

As we are moving towards nano level devices, there is a greater need to miniaturize resonators. Miniaturization of resonators helps to attain higher sensitivity, lower power consumption, higher resonance frequency along with lesser requirement of space. Since graphene is strong and stiff and has various other exceptional mechanical properties, graphene based resonators are of interest. Most of the garphene resonators in the past have been measured using optical setup. In order to get rid of this large and bulky setup, we aim to integrate it with an actuation electrode. The main goal of this thesis is to fabricate an electrostatically actuated graphene resonator. For the graphene membrane to work as a resonator, it needs to be suspended. In this work, various samples of different shapes, sizes and gap sizes have been analyzed using different experiments. Some samples are found to be collapsed. Whereas the other samples show corrugations and wave like structure. We observe clear differences between the SEM and AFM images of the collapsed and likely suspended samples. This is followed by the fabrication of graphene resonator with a buried electrode. This work presents all the failed attempts to fabricate suspended graphene membrane on a buried electrode before realizing the suspended graphenes membrane on p doped polysilicon and niobium electrode. To find the resonant frequency of the graphene membrane, experiments such as DC tuning and nonlinearity have been performed on the samples. We found a high frequency peak becoming much more non linear at high oscillation amplitudes than the low frequency peak. We suspect it to be graphene's resonant frequency. In the later part of this work, the cause of the collapse of membranes is analyzed. Using stress measurements and observations from various samples, some hypothesis have been proposed for the collapsing graphene membranes. We also observed bubble like structures on graphene samples which formed suspended membranes after release. We have found the cause of collapse of membranes but the exact mechanism of suspension is still unknown. The EDX analysis on the bubbles show that the bubble area has significant amount of more oxygen than the other area of graphene. To use graphene membranes as a resonator, it needs to be fully suspended. Hence, it is crucial to understand the process of suspension of graphene in more detail.

Electrical Engineering

Advisors/Committee Members: Sarro, Lina (mentor), Vollebregt, Sten (mentor), Dolleman, RJ (mentor), Steeneken, Peter (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: graphene resonators; electrostatic actuation; suspension

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APA (6^th Edition):

Singh, M. (. (2017). Suspended Graphene Membranes For Electrostatically Actuated Resonators. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d5f10ea4-436d-4f1c-badf-c5be8b634f20

Chicago Manual of Style (16^th Edition):

Singh, Manvika (author). “Suspended Graphene Membranes For Electrostatically Actuated Resonators.” 2017. Masters Thesis, Delft University of Technology. Accessed February 28, 2021. http://resolver.tudelft.nl/uuid:d5f10ea4-436d-4f1c-badf-c5be8b634f20.

MLA Handbook (7^th Edition):

Singh, Manvika (author). “Suspended Graphene Membranes For Electrostatically Actuated Resonators.” 2017. Web. 28 Feb 2021.

Vancouver:

Singh M(. Suspended Graphene Membranes For Electrostatically Actuated Resonators. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Feb 28]. Available from: http://resolver.tudelft.nl/uuid:d5f10ea4-436d-4f1c-badf-c5be8b634f20.

Council of Science Editors:

Singh M(. Suspended Graphene Membranes For Electrostatically Actuated Resonators. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:d5f10ea4-436d-4f1c-badf-c5be8b634f20

17. Tlili, Inès. Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use.

Degree: Docteur es, Optique et Lasers, Physico-chimie, Atmosphère, 2016, Université Lille I – Sciences et Technologies

URL: http://www.theses.fr/2016LIL10208

►

En raison de leur utilisation répandue dans les soins de santé humaine et animale, les antibiotiques et autres résidus de médicaments sont omniprésents dans l’environnement… (more)

▼

En raison de leur utilisation répandue dans les soins de santé humaine et animale, les antibiotiques et autres résidus de médicaments sont omniprésents dans l’environnement en général et le milieu aquatique particulièrement. Compte tenu de leurs impacts potentiels sur le fonctionnement de l'écosystème et la santé publique, la quantification des résidus de médicaments sur l'environnement est devenue une nécessité. Diverses techniques d'analyse se sont avérées être appropriées pour la détection fiable de tels composés. Cependant, la quantification peut être difficile car ces contaminants émergents sont présents à l’état de traces ou d'ultra-traces. Par conséquent, l'exactitude des analyses environnementales dépend à la fois de l'efficacité et de la robustesse de la méthode d'extraction et de quantification. Des procédures d’analyse de traces de ces contaminants émergents, ont été donc mise au point et des méthodes basées sur des analyses LC-MS/MS ont été développées. Pour les échantillons aqueux, l’extraction est menée sur phase solide (SPE, OASIS HLB). Les MLOQ sont comprises entre 0.2 et 3 ng/L. Pour la matrice solide, la procédure d’extraction à haute température et pression a été utilisée suivie d’une purification SPE. Afin d’évaluer le contexte de la pollution totale, la méthodologique analytique validée a été appliquée à des échantillons d’eaux potables et usées provenant de la France et de la Tunisie. Les résidus de médicament associés à la matière solide en suspension (MES) ont également été quantifiés pour compléter l’évaluation du degré de pollution environnementale.

Due to their widespread use in human and animal health care, antibiotics and other drug residues are ubiquitous in the environment in general and the aquatic environment in particular. Given their potential impacts on the functioning of the ecosystem and public health, the quantification of drug residues on the environment has become a necessity. Various assay techniques have been found to be suitable for the reliable detection of such compounds. However, quantification can be difficult because these emerging contaminants are present in the trace or ultra-trace state. Therefore, the accuracy of environmental analyzes depends on both the effectiveness and the robustness of the extraction and quantification method. Trace analysis procedures for these emerging contaminants were therefore developed and methods based on LC-MS / MS analyzes were also developed. For aqueous samples, extraction is carried out on solid phase (SPE, OASIS HLB). MLOQs range from 0.2 to 3 ng / L. For the solid matrix, the extraction procedure at high temperature and pressure was used followed by SPE purification. To assess the context of total pollution, the validated analytical methodology was applied to drinking and wastewater samples from France and Tunisia. Drug residues associated with suspended solid matter (SSM) were also quantified to complete the assessment of the degree of environmental pollution.

Advisors/Committee Members: Ouddane, Baghdad (thesis director), Ternane, Riadh (thesis director), Net-David-Buytaert, Sopheak (thesis director), Ghorbel-Abid, Ibtissem (thesis director).

Subjects/Keywords: Matières en suspension; 628.168

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APA (6^th Edition):

Tlili, I. (2016). Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use. (Doctoral Dissertation). Université Lille I – Sciences et Technologies. Retrieved from http://www.theses.fr/2016LIL10208

Chicago Manual of Style (16^th Edition):

Tlili, Inès. “Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use.” 2016. Doctoral Dissertation, Université Lille I – Sciences et Technologies. Accessed February 28, 2021. http://www.theses.fr/2016LIL10208.

MLA Handbook (7^th Edition):

Tlili, Inès. “Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use.” 2016. Web. 28 Feb 2021.

Vancouver:

Tlili I. Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use. [Internet] [Doctoral dissertation]. Université Lille I – Sciences et Technologies; 2016. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2016LIL10208.

Council of Science Editors:

Tlili I. Développement analytique et suivi dans l’environnement des traces des antibiotiques à usage humain et vétérinaire : Analytical development and monitoring in the environment of traces of antibiotics for human and veterinary use. [Doctoral Dissertation]. Université Lille I – Sciences et Technologies; 2016. Available from: http://www.theses.fr/2016LIL10208

18. Ramesh, Shreyas. Optimizing Spring Specification .

Degree: Chalmers tekniska högskola / Institutionen för industri- och materialvetenskap, 2019, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/300179

► Abstract The initial specification for the spring is very crucial for developing a concept design of the suspension system. The spring plays a major role… (more)

Subjects/Keywords: Optimization; Spring Specification; Suspension Spring

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APA (6^th Edition):

Ramesh, S. (2019). Optimizing Spring Specification . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/300179

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ramesh, Shreyas. “Optimizing Spring Specification .” 2019. Thesis, Chalmers University of Technology. Accessed February 28, 2021. http://hdl.handle.net/20.500.12380/300179.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ramesh, Shreyas. “Optimizing Spring Specification .” 2019. Web. 28 Feb 2021.

Vancouver:

Ramesh S. Optimizing Spring Specification . [Internet] [Thesis]. Chalmers University of Technology; 2019. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/20.500.12380/300179.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ramesh S. Optimizing Spring Specification . [Thesis]. Chalmers University of Technology; 2019. Available from: http://hdl.handle.net/20.500.12380/300179

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia

19. Jones, Bobbie R. The effectiveness of the learning enhancement classroom.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/21544

► Discipline in today’s public school is under continuous scrutiny. Educators continually search for techniques and programs that will help reduce discipline problems while helping the… (more)

▼ Discipline in today’s public school is under continuous scrutiny. Educators continually search for techniques and programs that will help reduce discipline problems while helping the disruptive child continue the educational process. In-school suspension is one way to help the disruptive child as well as the students left in the classroom whose education is often hindered by the distractions caused by unruly students. In this study each child that could be tracked from their first referral to The Learning Enhancement Classroom, in kindergarten or first grade, until completion of fifth grade was identified. Once these students were identified, data were collected. Upon retrieval of all data each child’s discipline history was charted and graphed so that the researcher was able to determine if a pattern existed. When this had been established the researcher was able to describe each child’s discipline history. The researcher was also able to make observations about the group of students as well. Nine students from the 1996-97 school year and four students from the 1997-98 school year were tracked. In addition to these 13 students were nine students who are currently in the fifth grade and were only tracked through fourth grade. A z score was calculated to determine if the change in proportions of number of students referred to LEC was significant. There was no significant difference in the change in proportions of number of students referred in kindergarten through fourth grade in the 13 students that were tracked through the fifth grade. However, there was a significant increase in the change in proportions of number of students referred in fifth grade. When the other nine students were added there was a significant decrease in the change in proportions from kindergarten to first, kindergarten to second, kindergarten to third, and kindergarten to fourth. The mean number of students’ referrals by grade was also calculated. A dependent t-test was calculated to test the difference in the means. There was no significant difference in the mean number of student’s referrals.

Subjects/Keywords: In-school suspension Discipline

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APA (6^th Edition):

Jones, B. R. (2014). The effectiveness of the learning enhancement classroom. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/21544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jones, Bobbie R. “The effectiveness of the learning enhancement classroom.” 2014. Thesis, University of Georgia. Accessed February 28, 2021. http://hdl.handle.net/10724/21544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jones, Bobbie R. “The effectiveness of the learning enhancement classroom.” 2014. Web. 28 Feb 2021.

Vancouver:

Jones BR. The effectiveness of the learning enhancement classroom. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/10724/21544.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jones BR. The effectiveness of the learning enhancement classroom. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/21544

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

20. Bottoms, Eric E. Short span suspension bridges (Highway loads H-15).

Degree: 1935, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:14067

Subjects/Keywords: Suspension bridges

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APA (6^th Edition):

Bottoms, E. E. (1935). Short span suspension bridges (Highway loads H-15). (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:14067

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bottoms, Eric E. “Short span suspension bridges (Highway loads H-15).” 1935. Thesis, Michigan State University. Accessed February 28, 2021. http://etd.lib.msu.edu/islandora/object/etd:14067.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bottoms, Eric E. “Short span suspension bridges (Highway loads H-15).” 1935. Web. 28 Feb 2021.

Vancouver:

Bottoms EE. Short span suspension bridges (Highway loads H-15). [Internet] [Thesis]. Michigan State University; 1935. [cited 2021 Feb 28]. Available from: http://etd.lib.msu.edu/islandora/object/etd:14067.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bottoms EE. Short span suspension bridges (Highway loads H-15). [Thesis]. Michigan State University; 1935. Available from: http://etd.lib.msu.edu/islandora/object/etd:14067

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toledo

21. Ojha, Rabin Prasad. Main Cable Dehumidification of The Anthony Wayne Bridge.

Degree: MS, Civil Engineering, 2019, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1576253431551772

► This thesis validates the use of Analatom AN110 corrosion sensors and the dehumidification system in the main cables of The Anthony Wayne Bridge over Maumee… (more)

▼ This thesis validates the use of Analatom AN110 corrosion sensors and the dehumidification system in the main cables of The Anthony Wayne Bridge over Maumee River in Toledo, Ohio, to keep the relative humidity at a level in which corrosion cannot occur. The 88 years old bridge has been subjected to several rehabilitation projects to control corrosion, as well as to extend its life cycle. The acoustic emission monitoring system was installed in 2011 to detect potential locations of corrosion, but no such signals were detected. Internal inspections done by Modjeski and Masters, Inc. at two locations on each cable revealed severe corrosion and subsequently urged Ohio Department of Transportation (ODOT) to find promising technology, such as a dehumidification system, to prevent corrosion.Previous research and inspections revealed that, even with improved wrapping and painting, it was impossible to make cables completely watertight, which led researchers to find a system that can protect cables by controlling humidity. Main cable dehumidification involves injecting dry air into the cable environment which then collects moisture, releasing it through exhaust, thereby reducing relative humidity and controlling corrosion.This system is also considered the most cost-effective approach in prolonging the life cycle of the suspension bridges.In this thesis, an extensive review of literature about cable dehumidification and examples of past applications of this system in bridges is presented, along with the application of Linear Polarization Resistance (LPR) technology, laboratory testing of Analatom AN110 corrosion sensors, and dehumidification systems. An environmental chamber with an aluminum duct was created inside the laboratory to simulate the condition of the main cables. AN110 corrosion sensors used LPR technology to measure corrosion rate and relative humidity in real-time, and the data was retrieved with the help of the Data Acquisition System. The first test was performed inside the laboratory, whereas the other four tests were performed outside the laboratory to investigate the effectiveness of the dehumidification system in the outside environment.The data obtained validated the use of the dehumidification system in controlling corrosion of the main cables of The Anthony Wayne Bridge and is recommended as an efficient and inexpensive method. Advisors/Committee Members: Nims, Douglas (Advisor).

Subjects/Keywords: Civil Engineering; dehumidification; suspension bridge

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APA (6^th Edition):

Ojha, R. P. (2019). Main Cable Dehumidification of The Anthony Wayne Bridge. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1576253431551772

Chicago Manual of Style (16^th Edition):

Ojha, Rabin Prasad. “Main Cable Dehumidification of The Anthony Wayne Bridge.” 2019. Masters Thesis, University of Toledo. Accessed February 28, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1576253431551772.

MLA Handbook (7^th Edition):

Ojha, Rabin Prasad. “Main Cable Dehumidification of The Anthony Wayne Bridge.” 2019. Web. 28 Feb 2021.

Vancouver:

Ojha RP. Main Cable Dehumidification of The Anthony Wayne Bridge. [Internet] [Masters thesis]. University of Toledo; 2019. [cited 2021 Feb 28]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1576253431551772.

Council of Science Editors:

Ojha RP. Main Cable Dehumidification of The Anthony Wayne Bridge. [Masters Thesis]. University of Toledo; 2019. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1576253431551772

Delft University of Technology

22. Chew Yuwei, Alvin (author). An Architecture of Suspension: Suspending time and Place in Bucharest, Romania.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0cf1f2dd-e49f-448e-900c-8c48949f93eb

► The predominant approach in dealing with spaces suspended often involves negative connotations that view these spaces as spaces that ought to be destroyed or avoided… (more)

Subjects/Keywords: Suspension; Referentiality; Bucharest, Romania

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APA (6^th Edition):

Chew Yuwei, A. (. (2017). An Architecture of Suspension: Suspending time and Place in Bucharest, Romania. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0cf1f2dd-e49f-448e-900c-8c48949f93eb

Chicago Manual of Style (16^th Edition):

Chew Yuwei, Alvin (author). “An Architecture of Suspension: Suspending time and Place in Bucharest, Romania.” 2017. Masters Thesis, Delft University of Technology. Accessed February 28, 2021. http://resolver.tudelft.nl/uuid:0cf1f2dd-e49f-448e-900c-8c48949f93eb.

MLA Handbook (7^th Edition):

Chew Yuwei, Alvin (author). “An Architecture of Suspension: Suspending time and Place in Bucharest, Romania.” 2017. Web. 28 Feb 2021.

Vancouver:

Chew Yuwei A(. An Architecture of Suspension: Suspending time and Place in Bucharest, Romania. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Feb 28]. Available from: http://resolver.tudelft.nl/uuid:0cf1f2dd-e49f-448e-900c-8c48949f93eb.

Council of Science Editors:

Chew Yuwei A(. An Architecture of Suspension: Suspending time and Place in Bucharest, Romania. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:0cf1f2dd-e49f-448e-900c-8c48949f93eb

University of Pretoria

23. Breytenbach, Hendrik Gerhardus Abraham. Optimal vehicle suspension characteristics for increased structural fatigue life .

Degree: 2010, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/

► The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using… (more)

▼ The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using mathematical optimisation. Further challenges exist due to the large variations in vehicle sprung mass. The suspension system must provide adequate isolation from road load inputs throughout its payload operating range. This is imperative if good vehicle structural life is to be ensured. A passive suspension system can only provide optimal isolation at a single payload. The designer of such a suspension system must therefore make a compromise between designing for a fully-laden or unladen payload state. This work deals with suspension optimisation for vehicle structural life. The work mainly addresses two questions: 1) What are the suspension characteristics required to ensure optimal isolation of the vehicle structure from road loads? and 2) If such optimal suspension characteristics can be found, how sensitive are they to changes in vehicle payload? The study aims to answer these questions by examining a Land Rover Defender 110 as case study. An experimentally validated mathematical model of the test vehicle is constructed for the use in sensitivity studies. Mathematical optimisation is performed using the model in order to find the suspension characteristics for optimal structural life of the vehicle under consideration. Sensitivity studies are conducted to determine the robustness of the optimal characteristics and their sensitivity to vehicle payload variation. Recommendations are made for suspension characteristic selection for optimal structural life. AFRIKAANS : Ontwerpers van swaar, veldvoertuig suspensie stelsels staar unieke uitdagings in die gesig. Die ritgemak teenoor hantering kompromie in hierdie voertuie is reeds telkemale ondersoek, ook met wiskundige optimering. Verdere uitdagings bestaan as gevolg van die groot veranderinge in geveerde massa by hierdie voertuie. Die suspensiestelsel moet gepaste isolasie van pad insette oor `n wye reeks van bedryfstoestande lewer. Dit is veral belangrik indien daar verseker wil word dat die voertuig goeie struktuurleeftyd het. `n Passiewe suspensiestelsel kan egter slegs optimale isolasie by `n enkele vragtoestand lewer. Die ontwerper van `n passiewe suspensie stelsel moet dus `n kompromie aangaan tussen ontwerp vir `n vol of leë vragtoestand. Hierdie studie handel oor suspensie optimering vir struktuur leeftyd. Die werk spreek hoofsaaklik twee vraagstukke aan: 1) Watter suspensie karakteristieke word benodig om die voertuig struktuur optimaal van padinsette te isoleer? en 2) Indien sulke optimale karakteristieke gevind kan word, wat is hulle sensitiwiteit vir veranderinge in voertuig vrag? Die studie mik om hierdie vraagstukke aan te spreek deur ondersoeke op `n Land Rover Defender 110 toetsvoertuig. `n Eksperimenteel gevalideerde, wiskundige model van die toetsvoertuig word saamgestel met die oog op sensitiwiteitstudies. Wiskundige optimering word met die model uitgevoer om… Advisors/Committee Members: Prof P S Els (advisor).

Subjects/Keywords: Structural fatigue life; Off-road vehicle suspension system; Vehicle suspension; UCTD

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APA (6^th Edition):

Breytenbach, H. G. (2010). Optimal vehicle suspension characteristics for increased structural fatigue life . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-09172010-190101/

Chicago Manual of Style (16^th Edition):

Breytenbach, Hendrik Gerhardus. “Optimal vehicle suspension characteristics for increased structural fatigue life .” 2010. Masters Thesis, University of Pretoria. Accessed February 28, 2021. http://upetd.up.ac.za/thesis/available/etd-09172010-190101/.

MLA Handbook (7^th Edition):

Breytenbach, Hendrik Gerhardus. “Optimal vehicle suspension characteristics for increased structural fatigue life .” 2010. Web. 28 Feb 2021.

Vancouver:

Breytenbach HG. Optimal vehicle suspension characteristics for increased structural fatigue life . [Internet] [Masters thesis]. University of Pretoria; 2010. [cited 2021 Feb 28]. Available from: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/.

Council of Science Editors:

Breytenbach HG. Optimal vehicle suspension characteristics for increased structural fatigue life . [Masters Thesis]. University of Pretoria; 2010. Available from: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/

Texas A&M University

24. Algethami, Abdullah Ayedh B. Regenerative Suspension System Modeling and Control.

Degree: PhD, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/173094

► Many energy indicators show an increase in the world’s energy deficit. Demand for portable energy sources is growing and has increased the market for energy… (more)

▼ Many energy indicators show an increase in the world’s energy deficit. Demand for portable energy sources is growing and has increased the market for energy harvesters and regenerative systems. This work investigated the implementation of a regenerative suspension in a two-degree-of freedom (2-DOF) quarter-car suspension system. First, an active controller was designed and implemented. It showed 69% improvement in rider comfort and consumed 8 – 9 W of power to run the linear motor used in the experiment. A regenerative suspension system was then designed to save the energy normally spent in active suspensions, approximately several kilowatts in an actual car. Regenerative suspension is preferable because it can regenerate energy. Experimental investigations were then conducted to find generator constants and damping coefficients. Additionally, generator damping effects and power regeneration in the quarter-car test bed were also investigated. The experiments showed that a linear regenerative damper can suppress up to 22% of vibrations and harvest 2% of the disturbance power. Since both harvesting and damping capabilities were noticeable in this test bed, it was used to implement regenerative suspension, and a regenerative controller was developed to provide riders with additional comfort. To implement this regenerative controller, an electronic interface was designed to facilitate controlling the regenerative force and storing energy after the rectification process. The electronic interface used was a symmetrical-bridgeless boost converter (SBBC) due to its few components and even fewer control efforts. The converter was then modeled in a manner that made the current and voltage in phase for the maximum power factor. The converter control allowed the motor’s external load to be presented as of variable resistance with the unity power factor. The generator was then considered a voltage source for energy regeneration purposes. The controller was designed to control regenerative force at a frequency of 20 kHz. This frequency was sufficient to enable another controller to manipulate the desired regenerative damping force, which was chosen to be 1 kHz. The input to this controller was the generator voltage used to determine the polarity of pulse-width modulation (PWM). Therefore, a combination of converter and controller was able to take the place of an active controller. A different controller was then designed to manipulate the desired damping force. This regenerative controller was designed in a manner similar to that of a semi-active controller. It improved vibration suppression and enhanced harvesting capabilities. The regenerative suspension showed better results than a passive suspension. The improvements are minimal at this time, but there is the potential for greater improvement with a more efficient controller. The harvested energy was so small in this experiment because the damper was inefficient. In practice, the damper’s efficiency should be improved. A regenerative damper will be more economical than a… Advisors/Committee Members: Kim, Won-jong (advisor), Ehsani, Mehrdad (committee member), Palazzolo, Alan (committee member), Suh, Steve (committee member).

Subjects/Keywords: regenerative suspension; regenerative controller; active suspension; regenerative interface

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APA (6^th Edition):

Algethami, A. A. B. (2017). Regenerative Suspension System Modeling and Control. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173094

Chicago Manual of Style (16^th Edition):

Algethami, Abdullah Ayedh B. “Regenerative Suspension System Modeling and Control.” 2017. Doctoral Dissertation, Texas A&M University. Accessed February 28, 2021. http://hdl.handle.net/1969.1/173094.

MLA Handbook (7^th Edition):

Algethami, Abdullah Ayedh B. “Regenerative Suspension System Modeling and Control.” 2017. Web. 28 Feb 2021.

Vancouver:

Algethami AAB. Regenerative Suspension System Modeling and Control. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/1969.1/173094.

Council of Science Editors:

Algethami AAB. Regenerative Suspension System Modeling and Control. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173094

Texas A&M University

25. Xu, Feng. Interfacial Instabilities of Suspensions in Hele-Shaw Cell.

Degree: PhD, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/173217

► The objective of this research is to investigate the interfacial instability of suspensions in a Hele-Shaw cell, which involves a dynamical coupling between particle transport… (more)

▼ The objective of this research is to investigate the interfacial instability of suspensions in a Hele-Shaw cell, which involves a dynamical coupling between particle transport and fluid-fluid interfacial deformations. Interfacial instabilities have remained an important subject of research given their complicated nature. They are commonplace in multiphase flows such as enhanced oil recovery, lung airways and micro-fluidic droplets, and controlling them is of critical importance. The inclusion of particles in fluid flows can also modify the interfacial dynamics, which yet remains not well understood. The Saffman-Taylor fingering instability occurs when a less viscous fluid displaces a more viscous one in porous media, which has been extensively studied for decades. The interface is supposed to be stable in the reverse scenario, in which the more viscous fluid invades the less viscous one. Surprisingly, the inclusion of particles can fundamentally change the interfacial dynamics and even lead to interfacial instability in the absence of the unstable fluid viscosity ratio. This instability phenomenon was first reported by Tang et al and extended to squeezing suspension flows by Ramachandran. However, the research on this topic has remained qualitative. In this research, we carry out rigorous experiments to characterize the fingering instability introduced particles, by varying the particle volume fraction and the gap thickness over particle diameter ratio h=D. The experimental data are analyzed utilizing advanced image processing techniques to aid our understanding of the phenomenon. Theoretically, we use the suspension balance model to validate the shear-induced migration upstream of the expanding interface and successfully explain the mechanism behind fingering. The project is then extended to bi-disperse suspensions. The experiments are conducted with particles having different diameters by varying both the bulk particle concentration and the respective concentration of each particle species. We observe similar fingering patterns and find that the addition of small amount of large particles leads to an earlier onset of fingering. The suspension balance model is modified to accommodate the bi-disperse suspension system and then utilized to quantitatively explore the dynamics. Advisors/Committee Members: Lee, Sungyon (advisor), Petersen, Eric (committee member), Palazzolo, Alan (committee member), Daripa, Prabir (committee member).

Subjects/Keywords: interfacial instability; particle suspension migration; suspension balance model

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APA (6^th Edition):

Xu, F. (2017). Interfacial Instabilities of Suspensions in Hele-Shaw Cell. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173217

Chicago Manual of Style (16^th Edition):

Xu, Feng. “Interfacial Instabilities of Suspensions in Hele-Shaw Cell.” 2017. Doctoral Dissertation, Texas A&M University. Accessed February 28, 2021. http://hdl.handle.net/1969.1/173217.

MLA Handbook (7^th Edition):

Xu, Feng. “Interfacial Instabilities of Suspensions in Hele-Shaw Cell.” 2017. Web. 28 Feb 2021.

Vancouver:

Xu F. Interfacial Instabilities of Suspensions in Hele-Shaw Cell. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/1969.1/173217.

Council of Science Editors:

Xu F. Interfacial Instabilities of Suspensions in Hele-Shaw Cell. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/173217

University of Pretoria

26. Breytenbach, Hendrik Gerhardus Abraham. Optimal vehicle suspension characteristics for increased structural fatigue life.

Degree: Mechanical and Aeronautical Engineering, 2010, University of Pretoria

URL: http://hdl.handle.net/2263/27991

► The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using… (more)

▼ The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using mathematical optimisation. Further challenges exist due to the large variations in vehicle sprung mass. The suspension system must provide adequate isolation from road load inputs throughout its payload operating range. This is imperative if good vehicle structural life is to be ensured. A passive suspension system can only provide optimal isolation at a single payload. The designer of such a suspension system must therefore make a compromise between designing for a fully-laden or unladen payload state. This work deals with suspension optimisation for vehicle structural life. The work mainly addresses two questions: 1) What are the suspension characteristics required to ensure optimal isolation of the vehicle structure from road loads? and 2) If such optimal suspension characteristics can be found, how sensitive are they to changes in vehicle payload? The study aims to answer these questions by examining a Land Rover Defender 110 as case study. An experimentally validated mathematical model of the test vehicle is constructed for the use in sensitivity studies. Mathematical optimisation is performed using the model in order to find the suspension characteristics for optimal structural life of the vehicle under consideration. Sensitivity studies are conducted to determine the robustness of the optimal characteristics and their sensitivity to vehicle payload variation. Recommendations are made for suspension characteristic selection for optimal structural life. AFRIKAANS : Ontwerpers van swaar, veldvoertuig suspensie stelsels staar unieke uitdagings in die gesig. Die ritgemak teenoor hantering kompromie in hierdie voertuie is reeds telkemale ondersoek, ook met wiskundige optimering. Verdere uitdagings bestaan as gevolg van die groot veranderinge in geveerde massa by hierdie voertuie. Die suspensiestelsel moet gepaste isolasie van pad insette oor `n wye reeks van bedryfstoestande lewer. Dit is veral belangrik indien daar verseker wil word dat die voertuig goeie struktuurleeftyd het. `n Passiewe suspensiestelsel kan egter slegs optimale isolasie by `n enkele vragtoestand lewer. Die ontwerper van `n passiewe suspensie stelsel moet dus `n kompromie aangaan tussen ontwerp vir `n vol of leë vragtoestand. Hierdie studie handel oor suspensie optimering vir struktuur leeftyd. Die werk spreek hoofsaaklik twee vraagstukke aan: 1) Watter suspensie karakteristieke word benodig om die voertuig struktuur optimaal van padinsette te isoleer? en 2) Indien sulke optimale karakteristieke gevind kan word, wat is hulle sensitiwiteit vir veranderinge in voertuig vrag? Die studie mik om hierdie vraagstukke aan te spreek deur ondersoeke op `n Land Rover Defender 110 toetsvoertuig. `n Eksperimenteel gevalideerde, wiskundige model van die toetsvoertuig word saamgestel met die oog op sensitiwiteitstudies. Wiskundige optimering word met die model uitgevoer om… Advisors/Committee Members: Prof P S Els (advisor).

Subjects/Keywords: Structural fatigue life; Off-road vehicle suspension system; Vehicle suspension; UCTD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Breytenbach, H. G. A. (2010). Optimal vehicle suspension characteristics for increased structural fatigue life. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/27991

Chicago Manual of Style (16^th Edition):

Breytenbach, Hendrik Gerhardus Abraham. “Optimal vehicle suspension characteristics for increased structural fatigue life.” 2010. Masters Thesis, University of Pretoria. Accessed February 28, 2021. http://hdl.handle.net/2263/27991.

MLA Handbook (7^th Edition):

Breytenbach, Hendrik Gerhardus Abraham. “Optimal vehicle suspension characteristics for increased structural fatigue life.” 2010. Web. 28 Feb 2021.

Vancouver:

Breytenbach HGA. Optimal vehicle suspension characteristics for increased structural fatigue life. [Internet] [Masters thesis]. University of Pretoria; 2010. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/2263/27991.

Council of Science Editors:

Breytenbach HGA. Optimal vehicle suspension characteristics for increased structural fatigue life. [Masters Thesis]. University of Pretoria; 2010. Available from: http://hdl.handle.net/2263/27991

27. Picard, Clément. Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection.

Degree: Docteur es, Physique, 2018, Lyon

URL: http://www.theses.fr/2018LYSEN015

►

Nous avons étudié expérimentalement la mise en suspension de particules lorsque l’on injecte du gaz à la base d’une couche de grains immergée dans un… (more)

▼

Nous avons étudié expérimentalement la mise en suspension de particules lorsque l’on injecte du gaz à la base d’une couche de grains immergée dans un liquide, en géométrie confinée (cellule de Hele-Shaw). En configuration verticale, le système atteint toujours un régime stationnaire résultant de la compétition entre l’entraînement des grains par la remontée des bulles, et leur sédimentation. Un modèle phénoménologique permet d’expliquer les propriétés de la suspension ainsi formée, et du lit granulaire non affecté par la remontée de gaz. L’effet de la gravité effective dans le système est ensuite considérée. Lorsqu’un état stationnaire existe, la taille du lit granulaire présente un maximum pour un angle d’inclinaison de la cellule de 30-40 degrés environ. Cette observation s’explique par un phénomène particulier de sédimentation, l’effet Boycott. Les propriétés statistiques de la suspension (densité, homogénéité) et des bulles (taille, forme, orientation) ont été caractérisées. On montre en particulier que l’on atteint un plateau pour l’aire de contact entre les trois phases (gaz/liquide/solide) en fonction du débit, indépendamment de la gravité effective – résultat important dans le cadre d’applications à des réactions catalytiques. Enfin, une large exploration de la gamme des paramètres montre, pour des cellules inclinées et certaines valeurs de débit de gaz, l’existence d’un régime oscillant : la taille du lit granulaire varie entre un état « creusé » (suspension très dense) et un état « comblé » (suspension peu concentrée). Une explication est proposée pour les temps de montée et de descente de ces oscillations.

We have studied experimentally particle suspension when injecting a gas at the bottom of an immersed granular layer, in confined geometry (Hele-Shaw cell). In a vertical setup, the system always reaches a stationary state resulting from the competition between grains entrainment by bubble rise, and sedimentation. A phenomenological model makes it possible to explain the properties of the suspension thus formed, and of the granular bed not affected by the gas rise. The influence of the effective gravity in the system is then considered. When a stationary state is reached, the size of the granular bed displays a maximum for a cell inclination angle of about 30-40 degrees. This observation can be explained by referring to a peculiar sedimentation process, the Boycott effect. Statistical properties of the suspension (density, homogeneity) and bubbles (size, shape, orientation) have been characterized. In particular, we show that the contact surface between the three phases (gas/liquid/solid) reaches a plateau when increasing the gas flow-rate, independent of the effective gravity. This result is important in the frame of possible applications to catalytic reactors. Finally, exploring a large range of parameters, we point out the existence of an oscillatory regime for inclined cells in a given range of gas flow-rates: the granular bed size oscillates between an "excavated" state (dense suspension) and a…

Advisors/Committee Members: Vidal, Valérie (thesis director).

Subjects/Keywords: Suspension; Bulles; Injection de gaz; Suspension; Bubbles; Gas injection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Picard, C. (2018). Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2018LYSEN015

Chicago Manual of Style (16^th Edition):

Picard, Clément. “Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection.” 2018. Doctoral Dissertation, Lyon. Accessed February 28, 2021. http://www.theses.fr/2018LYSEN015.

MLA Handbook (7^th Edition):

Picard, Clément. “Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection.” 2018. Web. 28 Feb 2021.

Vancouver:

Picard C. Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection. [Internet] [Doctoral dissertation]. Lyon; 2018. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2018LYSEN015.

Council of Science Editors:

Picard C. Mise en suspension de particules immergées par injection de gaz : Fluid-particle suspension by gas injection. [Doctoral Dissertation]. Lyon; 2018. Available from: http://www.theses.fr/2018LYSEN015

28. Brumaud, Coralie. Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension.

Degree: Docteur es, Structures et Matériaux, 2011, Université Paris-Est

URL: http://www.theses.fr/2011PEST1069

►

Dans ce travail, nous choisissons, dans l'optique de mieux comprendre le rôle joué par les éthers de cellulose dans les mortiers monocouches, d'utiliser la rhéomètrie… (more)

▼

Dans ce travail, nous choisissons, dans l'optique de mieux comprendre le rôle joué par les éthers de cellulose dans les mortiers monocouches, d'utiliser la rhéomètrie pour identifier les mécanismes d'action de ces molécules au sein d'une pâte de ciment. Nous développons ainsi les protocoles et l'analyse associée nous permettant, à partir de mesures macroscopiques, d'affiner notre compréhension de ces molécules à une échelle microscopique. Puis, nous extrapolons de nos résultats les conséquences d'une modification du dosage ou des paramètres moléculaires de l'éther dans le cas du mortier monocouche et de sa mise en œuvre. Dans une première partie, nous étudions l'influence de l'ajout d'éthers sur la viscosité du fluide interstitiel d'une suspension cimentaire et le rôle de ce paramètre sur la rétention d'eau. Dans une deuxième partie, nous étudions l'effet des éthers de cellulose sur le seuil d'écoulement et la déformation critique de pâtes de ciment et le rôle de ces paramètres sur la capacité d'adhésion du mortier. Dans une troisième partie, nous étudions l'effet des éthers de cellulose sur la viscosité d'une pâte de ciment et le rôle de ce paramètre sur la facilité de lissage

We choose in this work to use rheology to understand the role of cellulose ethers in render mortars and identify their mechanisms of action in a cement paste. We develop some protocols and their analysis to improve, from macroscopic measurements, our understanding of these molecules at a microscopic scale. We then extrapolate from our results the consequences of a change in amount, nature or chemical structure of the ether on the render mortar fresh properties. In a first part, we study the influence of ethers on the viscosity of a cement paste interstitial fluid and the effect of this viscosity on water retention. In a second part, we study the effect of cellulose ethers on the yield stress and critical deformation of cement pastes and the role of these rheological parameters on the properties of the render mortar. In a third part, we focus on the influence of cellulose ethers on the viscosity of cement pastes and the role of this parameter on the application easiness of the render mortar

Advisors/Committee Members: Roussel, Nicolas (thesis director).

Subjects/Keywords: Ethers de cellulose; Rhéologie; Suspension cimentaire; Cellulose ethers; Rheology; Cementitious suspension

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Brumaud, C. (2011). Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2011PEST1069

Chicago Manual of Style (16^th Edition):

Brumaud, Coralie. “Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension.” 2011. Doctoral Dissertation, Université Paris-Est. Accessed February 28, 2021. http://www.theses.fr/2011PEST1069.

MLA Handbook (7^th Edition):

Brumaud, Coralie. “Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension.” 2011. Web. 28 Feb 2021.

Vancouver:

Brumaud C. Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension. [Internet] [Doctoral dissertation]. Université Paris-Est; 2011. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2011PEST1069.

Council of Science Editors:

Brumaud C. Origines microscopiques des conséquences rhéologiques de l’ajout d’éthers de cellulose dans une suspension cimentaire : Microscopic origins of the rheological consequences of the addition of cellulose ethers in a cementitious suspension. [Doctoral Dissertation]. Université Paris-Est; 2011. Available from: http://www.theses.fr/2011PEST1069

29. Odet, Margot. Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis.

Degree: Docteur es, Biomécanique, 2016, Lyon

URL: http://www.theses.fr/2016LYSE1135

►

La scoliose infantile est une déformation rachidienne évolutive survenant chez l'enfant de moins de 3 ans. La technique de correction la plus répandue actuellement est… (more)

▼

La scoliose infantile est une déformation rachidienne évolutive survenant chez l'enfant de moins de 3 ans. La technique de correction la plus répandue actuellement est celle des « tiges de croissance ». Cependant, la rigidité du matériel provoque la dégénérescence des disques intervertébraux, ce qui di-minue l'efficacité du traitement. Des études récentes ont montré l'effet bénéfique d'implants flexibles sur les disques. Notre équipe a donc développé le concept d'une suspension implantable qui permet de garder la mobilité axiale des segments instrumentés, associé à un nouveau système de fixation rotulée. Cepen-dant, quelle valeur de raideur permet de préserver les disques tout en corrigeant efficacement la sco-liose ? Cette thèse a donc pour objectifs de démontrer l'intérêt d'une suspension pour les disques inter-vertébraux et d'obtenir des informations quantifiables sur la valeur optimale de raideur. Pour cela des prototypes de suspension avec fixation rotulée, implantables chez le mammifère quadrupède et l'Homme, ont été développés afin d'étudier in vivo et in silico plusieurs gammes de flexibilité. Une étude in vivo sur chèvres adultes saines a été menée pour tester ces prototypes pour 2 raideurs différentes. L'état des disques intervertébraux après 6 mois a été évalué par IRM et par coupes histologiques. En parallèle la biomécanique d'un rachis humain sain puis scoliotique, instrumenté avec différents disposi-tifs (tiges classiques, suspensions, avec ou sans rotules), a été étudiée avec un modèle numérique mul-ti-corps rigides, préalablement validé par comparaison avec des données in vitro de la littérature. Les résultats de l'étude in vivo n'ont pas montré de différence significative entre les différentes instrumentations testées. Un temps d'essai plus long semble nécessaire pour voir apparaître la dégéné-rescence discale. Les simulations numériques ont montré une nette amélioration de la mobilité des segments ins-trumentés avec une suspension rotulée. La majorité de la mobilité est cependant assuré par le nouveau système de fixation et non par la présence d'une plus grande souplesse axiale. La suspension permet néanmoins un gain supplémentaire pour certains mouvements du rachis. Aucune différence significative n'a été constatée entre les 2 valeurs de raideurs étudiées. La présence de fixations rotulée diminue par contre fortement la correction obtenue lors des simulations de chirurgie de distraction. La suspension seule présente un intérêt certain lors de la correc-tion en diminuant les efforts transmis au matériel. Les développements futurs s'orienteraient donc vers une suspension combinée à des fixations rotulées présentant également des raideurs en rotation pour conserver correction et mobilité

Infantile scoliosis is a progressive spinal deformity occurring in children under 3 years-old. The most common currently correction technic is the "growing rods" one. However, the implant rigidity causes intervertebral discs degeneration, which decreases the treatment efficiency. Recent studies have shown the…

Advisors/Committee Members: Massenzio, Michel (thesis director), Lafon-Jalby, Yoann (thesis director), Ronel, Sylvie (thesis director).

Subjects/Keywords: Rachis; Scoliose; Suspension; Raideur; Biomécanique; Spine; Scoliosis; Suspension; Stiffness; Biomechanics; 612.7

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Odet, M. (2016). Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2016LYSE1135

Chicago Manual of Style (16^th Edition):

Odet, Margot. “Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis.” 2016. Doctoral Dissertation, Lyon. Accessed February 28, 2021. http://www.theses.fr/2016LYSE1135.

MLA Handbook (7^th Edition):

Odet, Margot. “Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis.” 2016. Web. 28 Feb 2021.

Vancouver:

Odet M. Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis. [Internet] [Doctoral dissertation]. Lyon; 2016. [cited 2021 Feb 28]. Available from: http://www.theses.fr/2016LYSE1135.

Council of Science Editors:

Odet M. Étude biomécanique d’une suspension implantable pour la préservation des disques intervertébraux dans le traitement des scolioses infantiles : Biomechanical study of an implantable suspension for the preservation of the intervertebral discs in the treatment of infantile scoliosis. [Doctoral Dissertation]. Lyon; 2016. Available from: http://www.theses.fr/2016LYSE1135

Brno University of Technology

30. Král, Martin. Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/5159

► This work includes summary of choice structural multi-link axles used by contemporary cars. Individual solutions structural design are further desscribed. Further come out survey of… (more)

Subjects/Keywords: Víceprvková náprava; zavěšení; nezávislé zavěšení; Multi-link axle; suspension; independent suspension

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Král, M. (2018). Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/5159

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Král, Martin. “Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions.” 2018. Thesis, Brno University of Technology. Accessed February 28, 2021. http://hdl.handle.net/11012/5159.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Král, Martin. “Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions.” 2018. Web. 28 Feb 2021.

Vancouver:

Král M. Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/11012/5159.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Král M. Víceprvkové nápravy osobních vozidel: Passenger Car Multi-Link Suspensions. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/5159

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations