Дисертації з теми "Skin biomechanics"
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Ebersole, Gregory C. "Engineered Skin Biomechanics and the Deformation Behavior of Tissue Engineering Scaffolds." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306765479.
Повний текст джерелаMonat, Heath Barnhart. "Lumbar Skin Profile Prediction from Anterior and Lateral Torso Measurements." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343062090.
Повний текст джерелаLynch, Barbara. "Multiscale biomechanics of skin: experimental investigation of the role of the collagen microstructure." Palaiseau, Ecole polytechnique, 2015. https://theses.hal.science/tel-01237007/document.
Повний текст джерелаNewman, Steven J. "Crawling without Wiggling: Muscular Mechanisms and Kinematics of Rectilinear Locomotion in Boa Constrictors." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin150512929603962.
Повний текст джерелаBlackstone, Britani Nicole. "Biomaterial, Mechanical and Molecular Strategies to Control Skin Mechanics." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406123409.
Повний текст джерелаSchroeck, Christopher A. "A Reticulation of Skin-Applied Strain Sensors for Motion Capture." Cleveland State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=csu1560294990047589.
Повний текст джерелаKahn, Julie. "Biomechanics of Patient Handling Slings Associated with Spinal Cord Injuries." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4702.
Повний текст джерелаBalois, Thibaut. "Modélisation de croissance de tumeurs : cas particulier des mélanomes." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEE033/document.
Повний текст джерелаMelanoma is a cancer whose mortality grows rapidly with time. In order to insure an early diagnosis, advertising campaigns have emphasized the importance of morphological criteria in order to distinguish moles from melanoma. But, the origins of those criteria are still poorly understood. Our goal is to understand the link between genetic modifications and melanoma patterns using physical tools. As melanoma is easily observable and thin, this makes it an ideal system. This work begins by recalling the physiological aspect of skin cancer. Healthy skin is thoroughly described, then cancerous lesions are depictesd, and melanoma genetic pathways are briefly discussed. Then, continuous mathematical models of cancer are reviewed. We show how mixture theory is used to put cancer into equations. Then, this framework is simplified in a two phases 2D model.Those equations are analysed. The spatial study shows the possibility of a phase separation process: the spinodal decomposition. And, the time study shows thet this model contains the ingredients necessary to describe several melanoma types seen in vivo.Focussing finally on the third dimension. Melanoma evolving on a wavy epidermis (hands and feet skin) are studied. We explain how melanoma patterns should follow the skin ridges (fingerprints)
Li, Duo. "Biomechanical simulation of the hand musculoskeletal system and skin." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44027.
Повний текст джерелаPond, Damien. "Constitutive modelling of the skin accounting for chronological ageing." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25376.
Повний текст джерелаChoi, Jiwon 1977. "The role of fibulin-5 : in the ultrastructural and biomechanical properties of skin." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81611.
Повний текст джерелаGALAL, TAREK. "Interactions ondes electromagnetiques et surfaces rugueuses : applications a la surface cutanee." Besançon, 1989. http://www.theses.fr/1989BESA2007.
Повний текст джерелаYoshida, Hiroaki. "BIOMECHANICAL ANALYSES ON NONLINEAR BEHAVEIORS OF THE HUMAN SOFT TISSUES IN DYNAMIC NECK MOTION UNDER IMPACT LOADING AND TOPOLOGICAL SKIN PROPERTIES UNDER SUTURING DEFORMATION." Kyoto University, 2001. http://hdl.handle.net/2433/150663.
Повний текст джерелаBaker, Mark Ralph. "Late radiation effects in radiotherapy : changes in the biomechanical properties of normal skin, and surgically produced lesions after X irradiation measured in vivo and in vitro." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335860.
Повний текст джерелаThomas, Mark. "A physiological and biomechanical profile of the athletes competing in a World Cup cross-country ski relay event." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0024/MQ33458.pdf.
Повний текст джерелаBailly, Nicolas. "Traumatologie et systèmes de protection de la tête dans la pratique des sports de glisse alpins." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4102.
Повний текст джерелаThe aim of the project was to better understand traumatic brain injury (TBI) in alpine sports in order to improve the design and the evaluation of helmets. The work was divided in four main steps: Study skiing and snowboarding accidents leading to TBI: Ten scenarios were identified with a survey available in 10 medical centers and in 3 hospitals. The frontal and occipital zones were the most impacted parts of the head. Speed measurements were performed on ski slopes to complete the accident conditions analysis.Identify head impact conditions during these accidents: We reproduced the kinematics of these accidents using a numerical model of skier and snowboarder (multibody model). We identified two types of impact: impacts against the snow are the most frequent (70%) and are associated with mild TBI whereas impacts during collision are less frequent but are more likely to induce severe TBI. Evaluate helmet effectiveness in reducing the TBI combining experimental approach (Impacts of an instrumented head against the snow) and finite element simulations (Realistic head impacts reproduced numerically using a human model). Helmets were good at reducing the risk of severe TBI during an impact against a rigid obstacle. However the effectiveness of the helmets at reducing injury risk during an impact against the snow was limited. Improve helmet design: Three solutions were studied. These solutions were proposed, evaluated experimentally and numerically and optimized regarding the two targeted impacts “snow” and “obstacle”. The prototype of the optimized helmet reduces by 30% the acceleration of the head during these impacts compared to traditional helmets
Bessone, Veronica [Verfasser], Ansgar [Akademischer Betreuer] Schwirtz, Hermann [Gutachter] Schwameder, and Ansgar [Gutachter] Schwirtz. "Biomechanical Analysis of Ski Jumping Landing by means of Wearable Sensors / Veronica Bessone ; Gutachter: Hermann Schwameder, Ansgar Schwirtz ; Betreuer: Ansgar Schwirtz." München : Universitätsbibliothek der TU München, 2019. http://d-nb.info/1203299923/34.
Повний текст джерелаZahrebelna, A. O. "Smart biomask." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45339.
Повний текст джерелаDakpé, Stéphanie. "Etude biomécanique de la mimique faciale." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2203/document.
Повний текст джерелаThe aim of this research is to study facials mimics movements and to correlate externat soft tissue (i.e., cutaneous) movement during facial mimics with internal (i.e., facial mimic muscle) movement. The entire facial mimicry couldn't be studied, that's why relevant movements had been selected. Those movements were characterised by a clinically qualitative analysis in 23 young healthy volunteers. The analysis was performed with video recordings including scaling derived from the FACS (Facial Action Coding System). After the validation of external characterisation by this method, internal characterisation of the mimic facial muscle was carried out in 10 volunteers. A modelization of selected facial mimic muscle as Zygomaticus Major was achieved. With this work, morphological parameters could be extracted, 3D morphometric data were analysed to provide a better understanding of cinematic behaviour of muscle in different positions.This research is included in the Simovi Project, which aims to determine to what extent a facial mimic can be evaluated objectively, to select the qualitative and quantitative indicators for evaluation of mimic facial disorders, and to transfer our technological developments in clinical field. This research is a first step and provides data for simulation or developments of measurement tools in evaluation and follow-up of mimic facial disorders
Héraud, Sandrine. "Adaptation de méthodes biophysiques et biomécaniques pour l'exploration des peaux reconstruites in vitro." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10307.
Повний текст джерелаA skin equivalent consist of a epidermis reconstructed on the top of a dermis equivalent classically composed of fibroblasts cultured into a biomaterial scaffold which is often a collagen gel or sponge. This scaffold hold its own mechanical properties, influencing the global skin equivalent biomechanical response, so we choose to develop a scaffold-free skin equivalent (SFSE), based on the ability of fibroblasts to synthezise their own extracellular matrix. Our first objective was to optimize and characterize the structure, the reproducibility and functionality of this scaffold-free model. Our second goal was to adapt biophysical and biomechanical tools classically used for in vivo evaluation to in vitro skin equivalents. Their morphology was explored with different resolutions using echography, optical coherence tomography (OCT) and laser scanning microscopy whereas biomechanical functionality was evaluate by a suction test, the cutometry. This biophysical data were compared to more classical histological, immununohistological and transmission electronic microscopy results. The long-term culture of the scaffold-free model showed the good stability of epidermis and the continuous remodelling of MEC with notably an increase of collagen and elastin fibers. We selected a reference culture time, corresponding to the complete terminal differentiation of epidermis. At this culture time, we showed the epidermis and dermis thickness reproducibity in histology and OCT, the constant epidermis and dermo-epidermal junction maturity and the dermal expression of elastin, colocalized with fibrillin. The barrier function of epidermis was also demonstrated via stratum corneum and tight junctions impermeability
(5930606), Vivek Dharmangadan Sree. "Multiscale and Multiphysics Modeling of Pressure Driven Ischemia and Ulcer Formation in the Skin." Thesis, 2019.
Знайти повний текст джерела(9183377), Taeksang Lee. "Improving Reconstructive Surgery through Computational Modeling of Skin Mechanics." Thesis, 2020.
Знайти повний текст джерелаTavares, Liliana Patrícia da Veiga Durão Barbosa. "Caracterização da pele humana in vivo para melhor compreender a pele do doente obeso." Master's thesis, 2012. http://hdl.handle.net/10437/2871.
Повний текст джерелаO impacto da obesidade na fisiopatologia da pele humana parece relacionar-se com diversas dermatoses, resultado da alteração da sua fisiologia normal, incluindo alterações na função barreira e na função de “envelope”. Contudo, a informação disponível é ainda escassa devido às diversas complexidades do tema. Este estudo pretende contribuir para a definição de uma metodologia de abordagem experimental para estudar, de forma objetiva, as alterações funcionais que caracterizam a pele obesa. O presente estudo, transversal, incluiu 28 voluntárias, do sexo feminino, saudáveis, com idade média 23±5 anos de idade, após consentimento informado. Foi realizada uma única medição de caracterização das diversas funções cutâneas obtidas por meios não invasivos em condições controladas. As variáveis consideradas relevantes foram, a hidratação (superficial e profunda) a função de barreira e o comportamento biomecânico, medidos em 4 áreas anatómicas distintas. Através do SPSS (v 20.0) realizámos uma análise estatística univariada com cálculo de medidas de tendência central e de dispersão. Recorremos aos testes de Pearson e de Spearman, para as variáveis que seguiam, ou não, uma distribuição normal, respectivamente, adotando um grau de confiança de 95% . Os resultados permitem propor uma metodologia para o estudo da pele, aplicável ao doente obeso, incluindo a escolha das áreas anatómicas e das variáveis adequadas ao objetivo pretendido.
The impact of obesity in the pathophysiology of human skin seems to be related with various dermatoses, resulting from the change in its normal physiology, including changes in barrier function and the “envelope”function. However, the available information is still scarce because of the many complexities of the subject. This study pretends to contribute to the definition of a methodology for the experimental approach to study objectively the functional changes that characterize the obese skin. This transversal study included 28 volunteers, female, healthy, average age 23 ± 5 years, after informed consent. We performed a single measurement of skin characterization of the various functions obtained by non-invasive under controlled conditions. The variables considered as relevant, hydration (superficial and deep) barrier function and biomechanical behavior, measured at four different anatomical areas. Through the SPSS (v 20.0) conducted a univariate statistical analysis to calculate measures of central tendency and dispersion. We use the Pearson test and Spearman for variables that followed or not, a normal distribution, respectively, assuming a confidence level of 95%. The results allow us to propose a methodology for the study of the skin, apply to obese patients, including the choice of the anatomical areas and variables appropriate to the intended goal.
Jiun-Shian, Chang, and 張俊賢. "Biomechanical Analysis of Movements that Children Skip Rope on Different Frequencies." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/77834361655121694722.
Повний текст джерела國立臺北教育大學
體育學系碩士班
96
Abstract The purpose of this study was to investigate the changes in kinematical and dynamic parameters among different frequency levels of 90 time/min, 120 time/min, 132 time/min, and 150 time/min in rope.The experiment chose ten male students from the Min Quan Elementary School to be experiment subjects(aged 12.2±0.42, height of 151.7±5.34, and weight of 45.1±8.22). A Meqa Speed25K high-spped camera(100Hz)and an AMTI force plate(1000Hz)were used to simultaneously capture kinematical and dynamic parameters of the body movements and legs in one action cycle of rope jumping, and divided rope jumping into three period. The periods are take-off, landing and air. Kinematical parameters are filmed through the camera , then the obtained film undergoes Two Dimensional Direct Linear Transformation(2D-DLT)by the Kwon 3D movement analysis software, in order to obtain the paraments such as the position of center of gravity, speed, displacement, and leg joint angle.Signals from force plate passes through the amplifier to 16- frequency multi-functional receiver box and a A/D analog-digital signal transformer, then the original signal is processed by DASY LAB 6.0 software to calibrate modular and low-pass filtering(10Hz)and calculate the three-dimensional ground reaction force Body weight(B.W.)is used as the basis for standardization to obtain ground reaction force value and impulse values. The resulting data underwent one-way ANOVA via SPSS 12.0 statistics software to compare whether there was a significant different in body kinematical and dynamic paraments for different movement frequency of rope jumping. If there is a significant difference(p<.05), then the LSD method would be utilized to conduct post-analysis. The level of significamce for this experiment was set to α=.05. This study finds: ㄧ、Different frequency of rope jumping affect the three lower extremity joints in the lowest position of center of gravity. Faster frequency, smaller the three lower extremity joints. The three lower extremity joints in the lowest position of center of gravity both attained significant different(p<.05). 二、Different frequency of rope jumping affect the maximal joint velocity of hip and time to maximal joint velocity of hip.Faster frequency, slower the the maximal joint velocity of hip and time to maximal joint velocity of hip.Various frequency both attained significant different(p<.05). 三、Different frequency of rope jumping affect the vertical displacement of center of gravity. Faster frequency, fewer the vertical displacement of center of gravity. Various frequency in landing and jumping both attained significant different (p<.05). 四、Different frequency of rope jumping affect the time of landing. Faster frequency, less the time of landing.Various frequency attained significant different(p<.05). 五、Different frequency of rope jumping affect the impulse of landing. Faster frequency, less the impulse .Various frequency attained both significant different (p<.05). 六、Different frequency of rope jumping affect the landing maximum rate. Faster frequency, more the landing maximum rate.Various frequency attained significant different(p<.05). The conclusions are attained through the discussion of the findings : with the increasing of frequency in rope jumping,we should reduce the joint angle of three lower extremity joints before jumping and decrease the jumping height, in order to increase the speed of movement. In addition, the landing maximal load rate are increasing with frequency,for rookies, because they are not familiar with physical adjustment, it is not only impossible increasing the speed of movement, but it is also impossible buffering the impact from vertical ground reaction force.If rope jumping keeps high frequency long time, it results in greater probability of injury to the lower limbs.