Tesis sobre el tema "Freezing"
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Zhang, Qi. "Freezing tolerance in zoysiagrass". Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/448.
Texto completoPande, Vijay Satyanand. "Freezing transition of heteropolymers". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/33262.
Texto completoAhmad, Mansour M. M. "Assessment of freezing desalination technologies". Thesis, Swansea University, 2012. https://cronfa.swan.ac.uk/Record/cronfa42635.
Texto completoWood, John Anderson Carleton University Dissertation Geology. "Internal pressures in freezing soils". Ottawa, 1985.
Buscar texto completoGriffin, Joshua E. "Wastewater Irrigation in Freezing Conditions and the Impacts to Runoff Water Quality and Soil Freezing". The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420584627.
Texto completoHan, Sangjoon. "Modeling the mechanics of freezing clay". College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/3441.
Texto completoThesis research directed by: Civil Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Beerman, Michael. "Transverse freezing of thin liquid films /". Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/10573.
Texto completoKarlsson, Ami. "Purifying contaminated water by eutectic freezing". Thesis, Umeå universitet, Kemiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-85836.
Texto completoNoon, C. "Secondary frost heave in freezing soils". Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360418.
Texto completoKnutsson, Sven. "Soil behavior at freezing and thawing". Doctoral thesis, Luleå tekniska universitet, Geoteknologi, 1998. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25923.
Texto completoGodkänd; 1998; 20061123 (haneit)
Dickens, Dustin. "Supercooling and Freezing of HNO3/H2O Aerosols". Thesis, University of Waterloo, 2000. http://hdl.handle.net/10012/1225.
Texto completoStephenson, Neil. "On-farm blast freezing of Saskatoon berries". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57583.pdf.
Texto completoCornell, Stephen John. "Studies of freezing in kinetic Ising models". Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257825.
Texto completoAsh, Philip Andrew. "Surface freezing in surfactant/alkane/water systems". Thesis, Durham University, 2011. http://etheses.dur.ac.uk/843/.
Texto completoHuang, Jen-Yi. "Fundamental features of food fat freezing fouling". Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607795.
Texto completoSaranovic, Filip. "Private international law aspects of freezing injunctions". Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270457.
Texto completoDickens, Dustin. "Supercooling and freezing of HNO₃/H₂O aerosols". Waterloo : University of Waterloo, [Dept. of Chemistry], 2000. http://etd.uwaterloo.ca/etd/ddickens2000.pdf.
Texto completo"A thesis presented to the University of Waterloo in fulfilment of the thesis requirement for the degree of Master of Science in Chemistry". Includes bibliographical references.
Tommik, Karina. "Consolidation of Soft Sediments Using Artificial Ground Freezing". Thesis, Luleå tekniska universitet, Geoteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-66574.
Texto completoAndersson, Martin y Marcus Olofsson. "Methods for Freezing Time with Computer Graphics Imagery". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-8666.
Texto completoErfani, Majid-Reza. "De-aggregated reliability analysis of freezing rain hazard". Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86822.
Texto completoAnomaly maps of several meteorological variables were investigated for the objective categorization of ice storms. The NCEP reanalysis data was used to compile spatial patterns for the analysis of the storms identified and categorized by Rauber et al (2001). Several multivariate statistical analysis procedures were used to investigate the effectiveness of sea level pressure, the 1000 to 500 hPa, and the 1000 to 925 hPa geopotential heights for clustering these storms. Results indicated that the k-means algorithm applied to principle component scores of the storm anomaly maps provided the best clustering results. The results indicated that storms with higher precipitations belong to a group associated with the phenomena of cold air damming as a result of the Appalachian Mountains.
Environment Canada hourly data was used to identify freezing rain events and obtain measurements of wind speed and precipitation during the events that occurred over Ottawa, Montreal, and Quebec City. General Pareto or Generalized Extreme Value distributions are fitted to the data of total precipitation or total radial ice accumulation for each cluster using a peaks-over-threshold approach. Statistical tests indicate the resulting distributions for precipitation are significantly different from each cluster. This de-aggregated approach improves estimates of the icing hazard by improving statistical fits and by reducing the sensitivity of the results to the choice of threshold.
The second approach used to improve the estimates of the icing hazard function, using reliability methods, considers total precipitation, freezing ratio, and wind speed as the random variables in solving the icing model. The most likely combination of variables associated with high ice accumulations was found to high total precipitation, high freezing ratios, but only slightly higher than average wind speed. The latter is useful for defining load combinations (wind speed and ice accumulation) for structural design purposes.
Finally, the superstation approach of Jones and White (2002a) was investigated by combining Environment Canada data for Ottawa, Montreal and Quebec City. Monte Carlo simulations were performed on the regional set of data using 'at site' indexes. The reliability analysis of empirical icing equation produced results similar to Jones and White at quantiles associated with the 50 year return period. However there were greater differences at higher quantiles. The estimated return periods for radial ice accumulations of 45mm are 160, 210, and 85 years for Montreal, Ottawa, and Quebec City respectively.
L'objectif de ce travail est d'améliorer l'estimation du taux de récurrence et la distribution de la sévérité des tempêtes de verglas dans la région de Montréal ; deux quantités requises pour déterminer les critères de conception de certaines structures, telles que les lignes de transmission, pour ce type d'événement. Certaines des faiblesses des méthodes actuelles pour étudier les événements de pluies verglaçantes sont liées à la disponibilité limitée de données. Cela se traduit par des observations variables et un faible nombre d'événements importants. Les méthodes développées dans ce travail adressent ces problèmes. En premier lieu, une analyse désagrégée est employée afin d'obtenir de meilleures tendances statistiques en regroupant les tempêtes en fonction de différentes caractéristiques physiques qui sont reliées aux événements de verglas. Une deuxième procédure pour diminuer l'incertitude reliée à l'estimation de la période de récurrence des événements extrêmes est basée sur la solution du modèle d'accumulation CRREL à l'aide de méthodes d'analyse fiabilistes.
Les données de réanalyse du NCEP ont été utilisées pour compiler les relations spatiales entre les paramètres météorologiques pour les tempêtes identifiées et classifiées par Rauber et al. (2001). Plusieurs analyses statistiques à variables multiples ont été utilisées afin d'évaluer l'efficacité de le pression au niveau de la mer, de l'épaisseur de la couche atmosphérique entre 1000 et 500 hPa et de l'épaisseur de la couche atmosphérique entre 1000 et 925 hPa à regrouper les tempêtes. Les résultats indiquent que l'algorithme k-means couplé avec une représentation par composantes principales des tempêtes produit les meilleurs résultats. Les tempêtes avec des précipitations plus élevées sont associées à un groupe où les systèmes de haute pression sont ralentis ou stoppés momentanément par les Appalaches.
Les observations d'environnement Canada ont été utilisées pour identifier les tempêtes de verglas qui ont affecté Ottawa, Montréal et Québec et obtenir un échantillon de la vitesse des vents et des précipitations. Les précipitations totales et l'accumulation de verglas pour chaque groupe sont représentées par les distributions General Pareto et Generalized Extreme Value, en combinaison avec une approche Peaks over Treshold. Les distributions obtenues diffèrent de façon importante pour les différents regroupements. L'approche par désagrégation améliore la performance des modèles et est moins sensible au choix des précipitations minimales (le treshold).
La seconde approche pour l'estimation de la période de retour des événements de verglas extrêmes considère la précipitation totale, la proportion du gel et la vitesse du vent comme des variables aléatoires dans le modèle d'accumulation de verglas. La combinaison la plus probable des variables associée à des accumulations de verglas importantes correspond à une précipitation totale et une proportion de gel élevées, mais une vitesse du vent seulement légèrement plus haute que la moyenne. Cette information est utile à l'identification des cas de combinaison des charges (vitesse de vent et accumulation de verglas) pour les critères de conception.
Finalement, la méthode des super-stations (Jones and white 2002a) a été analysée pour un échantillon regroupant les villes d'Ottawa, Québec et Montréal. Des simulations Monte Carlo ont été effectuées sur les données régionales et cette approche fiabiliste, appliquée au modèle empirique d'accumulation, donne des résultats similaires à ceux de Jones et White (2002a) pour une période de retour de 50 ans, mais les divergences sont plus importantes pour des périodes de retour plus élevées. Les périodes de retour correspondant à une accumulation de verglas de 45mm pour Montréal, Ottawa et Québec sont de 160, 210 et 85 ans, respectivement.
Yuh, Seon Hee. "Cloning genes differentially expressed in freezing tolerant orchids". Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1020165.
Texto completoDepartment of Biology
Hampton, Christopher N. "Strength and creep testing for artificial ground freezing". Thesis, University of Nottingham, 1986. http://eprints.nottingham.ac.uk/12176/.
Texto completoWang, Rui. "Freezing and freeze-drying highly concentrated carbohydrate systems". Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7528/.
Texto completoSaad, Ali. "Detection of Freezing of Gait in Parkinson's disease". Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0029/document.
Texto completoFreezing of Gait (FoG) is an episodic phenomenon that is a common symptom of Parkinson's disease (PD). This research is headed toward implementing a detection, diagnosis and correction system that prevents FoG episodes using a multi-sensor device. This particular study aims to detect/diagnose FoG using different machine learning approaches. In this study we validate the choice of integrating multiple sensors to detect FoG with better performance. Our first level of contribution is introducing new types of sensors for the detection of FoG (telemeter and goniometer). An advantage in our work is that due to the inconsistency of FoG events, the extracted features from all sensors are combined using the Principal Component Analysis technique. The second level of contribution is implementing a new detection algorithm in the field of FoG detection, which is the Gaussian Neural Network algorithm. The third level of contribution is developing a probabilistic modeling approach based on Bayesian Belief Networks that is able to diagnosis the behavioral walking change of patients before, during and after a freezing event. Our final level of contribution is utilizing tree-structured Bayesian Networks to build a global model that links and diagnoses multiple Parkinson's disease symptoms such as FoG, handwriting, and speech. To achieve our goals, clinical data are acquired from patients diagnosed with PD. The acquired data are subjected to effective time and frequency feature extraction then introduced to the different detection/diagnosis approaches. The used detection methods are able to detect 100% of the present appearances of FoG episodes. The classification performances of our approaches are studied thoroughly and the accuracy of all methodologies is considered carefully and evaluated
Waller, Deborah. "Environmental scanning electron microscopy of freezing aqueous solutions". Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613409.
Texto completoKondrashova, Daria y Rustem Valiullin. "Diffusion in mesoporous materials during melting and freezing". Diffusion fundamentals 16 (2011) 51, S. 1, 2011. https://ul.qucosa.de/id/qucosa%3A13792.
Texto completoCombes, Pierre. "Freezing a la marche et syndromes extra-pyramidaux". Toulouse 3, 1994. http://www.theses.fr/1994TOU31071.
Texto completoLiu, Zhen. "Multiphysics Simulation and Innovative Characterization of Freezing Soils". Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1350331910.
Texto completoGuevara, Fernando Irons Gordon A. "A study of slag freezing in metallurgical furnaces". *McMaster only, 2007.
Buscar texto completoZhen, Ying. "Natural variation in freezing tolerance in Arabidopsis thaliana". Diss., Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2165.
Texto completoClaes, Dennis C. "Mixed layer dynamics in the onset of freezing". Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA241787.
Texto completoThesis Advisor(s): Garwood, Roland W. Second Reader: Davidson, Kenneth L. "December 1990." Description based on title screen as viewed on April 02, 2010. DTIC Descriptor(s): Temperature, dynamics, layers, flux(rate), energy, rates, sensitivity, depth, surfaces, nonlinear systems, solutions(general), freezing, heating, wind velocity, mixing, mixed layer(marine), salinity, heat flux, surface temperature, wind stress, buoyancy, hyperbolas, models DTIC Identifier(s): Ocean models, mixed layer (marine), freezing, sea ice, sea water, air water interactions, temperature, salinity, wind forcing, layers, depth, turbulence, mixing, wind velocity, freezing rate, parametric analysis, theses. Author(s) subject terms: Oceanography, sea ice, mixed layer modeling, freezing Includes bibliographical references (p. 93-99). Also available in print.
Atkinson, James David. "Freezing of droplets under mixed-phase cloud conditions". Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5858/.
Texto completoKondrashova, Daria y Rustem Valiullin. "Diffusion in mesoporous materials during melting and freezing". Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-185365.
Texto completoRogers, Maile Anne. "Water Vapor Movement in Freezing Aggregate Base Materials". BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4013.
Texto completoKröger, Jens 1981. "Elastic behavior and freezing of crystals with square symmetry". Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84048.
Texto completoGlendinning, Mark Charles. "Modelling the freezing and thawing behaviour of saturated soils". Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/54607/.
Texto completoArmonienė, Rita. "Freezing tolerance in winter wheat: gene identification and analysis". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20141208_113546-03867.
Texto completoTyrimų tikslas. Identifikuoti naujus žieminių kviečių genus, aktyvuojamus žemose temperatūrose bei atlikti šių genų sekų ir genetinės raiškos analizę. Tyrimų uždaviniai: 1. Ištirti žieminių kviečių genotipų tolerantiškumą žemoms neigiamoms temperatūroms natūraliomis ir dirbtinėmis sąlygomis. 2. Nustatyti skirtingose grūdinimosi stadijose diferenciškai ekspresuojamus genus (kDNR-AFLP analizė) ir atlikti DNR sekų analizę. 3. Optimizuoti mutagenezės metodą ir sukurti dviejų perspektyvių žieminių kviečių linijų mutagenines populiacijas. 4. Nustatyti skirtingu intensyvumu ekspresuojamų genų mutacijas HRM metodu, įvertinti nustatytų mutacijų įtaką genų ekspresijai grūdinimosi metu ir žemų neigiamų temperatūrų tolerancijai.
Amarell, Martin [Verfasser]. "Ist Freezing of Gait ein systemisches Defizit? / Martin Amarell". Köln : Deutsche Zentralbibliothek für Medizin, 2018. http://d-nb.info/1160304793/34.
Texto completoKrause, Stefan, Pedro F. Aramendia, Daniela Täuber y Borczyskowski Christian von. "Freezing single molecule dynamics on interfaces and in polymers". Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-122254.
Texto completoAl-Hakim, Kassem. "An investigation of spray-freezing and spray-freeze-dryings". Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/12935.
Texto completoPeters, Teresa Baker 1981. "Carbon dioxide flash-freezing applied to ice cream production". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35663.
Texto completoThesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
(cont.) Carbon dioxide is recompressed from 1.97 x 106 Pa (285 psi) to 3.96 x 106 Pa (575 psi). The process is scaled by increasing the number of nozzles to accommodate the desired flow rate. Only 165 nozzles are required to flash freeze the ice cream mix at a 2000 L/hr ice cream production rate. The power consumption of a continuous cycle implementation is modeled including single or double stage carbon dioxide recovery and compression, pre-cooling of the carbon dioxide by a standard condensing unit, pumping of the ice cream mix at high pressure and extrusion of the ice cream powder by a piston or screw extruder. The power consumption of an implementation recovering 95% of the carbon dioxide is approximately 37.3% of the power consumption of a conventional process. The cost of the make-up carbon dioxide is $0.002 per liter of ice cream. A cart implementation is also possible.
Ice cream mix and other liquids are frozen by direct contact with carbon dioxide while carbon dioxide is throttled from a liquid phase to a saturated vapor phase. The process is demonstrated with a proof-of-principle apparatus that freezes discrete batches of mix. The fluid consumption, power consumption and space requirement of a continuous cycle implementation are modeled. In the proof-of-principle apparatus and the continuous cycle model, the ice cream mix is sprayed into the liquid carbon dioxide using 1.0 GPH Delavan fuel nozzles; the combined fluid is throttled by 2.0 GPH Delavan fuel nozzles, forming a fine mist during flash-freezing. The pressure at the outlet of the throttle determines the temperature of the saturated carbon dioxide vapor after the flashing process. The resulting product is a frozen carbonated ice cream powder. Depending on the implementation, 50-99% of the carbon dioxide flow is vented and can be compressed and recycled with additional make-up carbon dioxide flow. The required ratio of carbon dioxide to ice cream mix is found by balancing the change in enthalpy of each liquid from the inlet to the outlet state. For ice cream mix frozen from 5°C to -200C, the ratio is shown to be about 1.1.
by Teresa Susan Baker.
S.M.
Krause, Stefan, Pedro F. Aramendia, Daniela Täuber y Borczyskowski Christian von. "Freezing single molecule dynamics on interfaces and in polymers". Physical Chemistry Chemical Physics. - 2011,13, S. 1754-1761, 2011. https://monarch.qucosa.de/id/qucosa%3A19944.
Texto completoXiao, Ruiyang. "The Freezing of Highly Sub-cooled H2O/D2O Droplets". The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211567463.
Texto completoCai, Hongchang. "Freezing of Palletized Food and Time-to-freeze Prediction". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1563463782014162.
Texto completoWang, Hongrui. "Developing Novel Methods to Mitigate Freezing Injury in Grapevines". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1564743163557437.
Texto completoRobson, David J. "Physical aspects of cavitation and freezing in conifer xylem". Thesis, University of Aberdeen, 1986. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU362721.
Texto completoShah, Ketan R. Carleton University Dissertation Engineering Civil. "Deformations and stresses in pipelines buried in freezing ground". Ottawa, 1990.
Buscar texto completoGoh, Lina. "Freezing of gait in Parkinson’s disease: rehabilitation and measurement". Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/29693.
Texto completoSun, Renfei. "Attention Network for Video Based Freezing of Gait Detection". Thesis, The University of Sydney, 2022. https://hdl.handle.net/2123/28908.
Texto completoAnhuaman, Laura Andrea Leon. "Fatores comportamentais, hormonais e neuroanatômicos associados à vulnerabilidade ao estresse em ratos Carioca High Conditioned-Freezing (CHF) e Carioca Low Conditioned-Freezing (CLF)". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/59/59134/tde-03042014-174324/.
Texto completoAnxiety and depression are the most common psychopathological conditions today. Scientific research in neuroscience, psychology, psychiatry and general medicine seeks to find different ways for treatment and prevention. However, most research does not take into account individual differences and history. Almost all pharmacological research is done in heterogeneous populations of animals, thereby leading to the \"average\" data. Recently, in the Laboratory of Behavioral Neuroscience at the Pontifical Catholic University of Rio de Janeiro (PUC - RJ), two new strains of rats were selected phenotypically by their emotional response (freezing) in a test of cond itioned fear. One of the lines, so called \"Carioca High Conditioned - Freezing\" (CHF) has an increased freezing in the test , whereas the other (\"Carioca Low -Conditioned Freezing \" CLF) shows low freezing response . In all experiments we used the Wistar control strain (RND) derived from random bred between Wistar rats. Here we present data from several experiments evaluating the differences in basal conditions and vulnerability to stress between the two strains and RND strain. The plasma corticosterone of rats was compared between the two lines and the RND group, first at baseline and then after exposure to the same test where the y were exposed to conditioned fear as aversive stimulus. We also analyzed the cell proliferation and survival in the hippocampus after chronic stress. Immunohistochemistry for c -fos was conducted in order to determine the differences in neural activity between the two strains and the RND group. A pharmacological test with ketanserin, 5 -HT2A antagonist, was performed and the animals were assessed for anxiety and locomotion in the elevated plus maze. All our results showed statistically significant differences between the selected strains. These results suggest that different baseline conditions may have an impact on the behavior exhibited by each animal. Thus the use of selected groups is better approach in order to model anxiety disorders and to determine which features prevent animal from presenting symptoms. It is evident that the neurochemical and behavioral profiles of the three groups CHF, CLF and RND were different qualitatively and quantitatively. At baseline after been phenotyped it has been observed that there are differences in cell proliferation and corticosterone concentration. After re-exposure to the context differences were observed in the concentration of corticosterone and neuronal activation. Chronic stress has led to differential responses in the number of immature neurons. And the pharmacological test led to differential responses at both local and systemic. The data obtained are useful for a better understanding of the neurobiological aspects associated with psychopathologies such as anxiety and depression that are associated with vulnerability to stress.