Tesis sobre el tema "Document treatment"
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Njoo, Marcellus Davy. "Treatment of vitiligo". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/57485.
Texto completoBrown, Richard. "Microbrachytherapy treatment planning". Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30180/document.
Texto completoAn innovative form of radiotherapy, microbrachytherapy, is under development. This therapy targets solid, inoperable tumours by performing injections of liquid containing radioactive microspheres in suspension. Many injections are required to sufficiently cover the tumoural volume, and so to be able to deliver the position of these injections, a method of treatment planning has been developed and validated throughout this research. Throughout this work, three main questions are addressed: • How to perform the dosimetry for microbrachytherapy? • How to perform treatment planning for this modality? • What are the optimal injection properties to deliver the most efficient treatment? Microbrachytherapy dosimetry was performed by calculating the absorbed dose distribution for an injection. This distribution was then convolved at each injection position within the tumour to calculate the patient's absorbed dose distribution. Dosimetry of the tumour and the organs at risk was performed by extracting and analysing dose-volume histograms (DVHs). Once a method of dosimetry was put in place, optimisation algorithms were developed to generate patient-specific treatment plans. For this, three algorithms were tested and compared: Nelder-Mead Simplex, the Bees algorithm and the non-dominated sorting genetic algorithm II. It was found that, thanks to its MO optimisation, the non-dominated sorting algorithm II was the most flexible, and was used preferentially. Lastly, a comparison of injection parameters was performed. It was found that between 90Y, 166Ho, 131I and 177Lu, optimal injections consisted of microspheres of 90Y. Injection volumes of 5, 10 and 20 µL and initial activities of 5, 10 and 20 MBq were tested. It was found that 20 µL injections with 20 MBq were optimal because they minimise the number of injections required. This new technology combined with developments shown in this work demonstrate the feasibility - that was validated on animals - the ability to inject liquid containing radioactive microspheres in suspension to efficiently treat inoperable tumours whilst protecting surrounding healthy tissue. Such tumours, despite still having a poor prognosis, will surely have better support in the near future
Slipkovich, Debbie. "Development of a Patient and Family Educational Document Following Cancer Treatment". ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3072.
Texto completoDam, Maria Jella van. "Dyslipidemia; diagnosis and treatment". Amsterdam : Amsterdam : Rozenberg Publishers ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/58891.
Texto completoSosef, Meindert Nico. "Experimental treatment modalities for liver failure". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/86688.
Texto completoTimmerman, Grietje Hermina. "Violent behaviour aetiology and treatment issues /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77751.
Texto completoSmeenk, Robert Matthijs. "Combined modality treatment of pseudomyxoma peritonei". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/43596.
Texto completoMarut, Wioleta. "ROS/RNS modulation in Systemic sclerosis treatment". Thesis, Paris 5, 2012. http://www.theses.fr/2012PA05T079/document.
Texto completoSeveral reports have suggested that reactive oxygen and nitrogen species are involved in SSc pathogenesis. SSc fibroblast from skin and internal organs overproduce ROS that trigger the proliferation of fibroblasts and the synthesis of type I collagen leading to the initiation and progresion of SSc. As in human SSc, skin fibroblasts from SSc mice constitutively produce large amounts of ROS. We have used this property to selectively induce apoptosis in the diseased fibroblast of SSc mice. Indeed, the organotelluride catalyst-(PHTE)2NQ and natural organosulfur compound – Dipropyltertrasulfide (DPTTS) are able of increasing ROS production by fibroblasts and inducing a lethal oxidative stress specificaly in SSc fibroblasts. This phenomenon has no impact on normal fibroblasts that present normal levels of ROS and a normal oxidant/antioxidant status. Many studies have also proved an importance of nitrogen species in the pathogenesis of SSc. In patients with SSc, the serum level of nitric oxide is significantly increased. Furthermore, NO can combine with other free radicals like superoxide anion (O•-2) to form the highly cytotoxic peroxynitrite (ONOO−) that contributes to inflammation, fibrosis and apoptosis of endothelial cells. Production of NO by endothelial cells or by fibroblasts can be stimulated by angiotensin II, the main peptide of the renin-angiotensin system (RAS). The level of angiotensin II is increased in SSc patients as well as in our HOCl mouse model and can promote proliferation of fibroblasts, fibrosis, and inflammation. These observations led us to test irbesartan, an angiotensin II type I receptor antagonist (AT1 RA) in the murine model of SSc. A new animal model based on chronic exposure to ROS and with many similarities to the human disease, allowed me to study new therapeutic approaches in SSc based on the cytotoxic action of pro-oxidative compounds - (PHTE)2NQ and DPTTS - and on the anti- nitrosative effect of irbesartan. These new therapeutic strategies open interesting perspectives in the treatment of SSc, where the therapeutic arsenal is currently still limited
Thanoon, David. "Computational framework for local breast cancer treatment". Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14387/document.
Texto completoBreast cancer is the most common cancer among women in the developed as well as the developing countries. There are a plethora of proposed solutions regarding possible medical interventions for breast cancer–one in particular is Breast Conserving Therapy (BCT). BCT comprises of complete surgical excision of the tumor (partialmastectomy), and post-operative radiotherapy for the remaining breast tissue. This is a feasible treatment for most women with breast cancer. The goal of BCT is toachieve local control of the cancer, as well as to preserve breast shape that appeases awoman’s cosmetic concerns. Although these goals are usually achieved, there are still occasional unexpected results, such as reexcision of the tumor due to a positive margin assessment, tumor local recurrence, unsatisfactory cosmetic results, and breastpain. Other than surgical experience and judgment, there are currently no toolswhich can predict the outcome of partial mastectomy on the contour and deformity of the treated breast. The objective of this dissertation is to propose computational framework, which contributes to BCT operations, this was achieve by exploring two areas.On the one hand we developed a multiscale model adapted for breast cancer tumor growth, ductal carcinoma in situ (DCIS). The model features included: nutrients growth limitation, wall degradation enzyme and HER2 chemical expression tumor phenotype. Our model successfully simulate some pattern of DCIS carcinoma.Among the interesting result we showed that the enzyme contributed to a greater tumor size and that when HER2 was over expressed, the growth limiting factor wasthe EGFR. On the other hand, we developed a virtual surgery box to simulate BCT surgery. The box will input MRI patient data and will output cosmetic and functional indicator to rate the impact of the surgery. It appears that stiffness of the tissue, resection radius as well as the lump quadrant location are the most sensitive parameters to the indicators. A healing model was also embedded to simulate the wound closure after resection, this model was stress dependent and illustrate anasymmetric wound closure progression.The tools developed in this research allows a new type of field convergence between the surgery and computation field. At the local level it will allow surgeons and patient to be able to communicate on the pertinence and necessity of performing alumpectomy surgery, enabling to anticipate the possible outcome of the operation.On the global aspect this type of tool gives birth to a new type of field: computational surgery, where computer scientist and surgeons work hand in hand to provide the best and the most reliable service to the patients
Weverling, Gerrit Jan. "Measuring treatment response in HIV-1 infection". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/83204.
Texto completoNolte, Petrus Albertus. "Nonunions surgery and low-intensity ultrasound treatment /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/64459.
Texto completoKok, Henny Petra. "Treatment planning for locoregional and intraluminal hyperthermia". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/46767.
Texto completoAleman, Berthe Mauricia Pauline. "Optimizing treatment of patients with Hodgkin's lymphoma". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/43623.
Texto completoValetti, Sabrina. "Targeted squalenoyl nanomedicines for pancreatic cancer treatment". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA114805/document.
Texto completoPancreatic cancer is a lethal disease with the worst prognosis among all solid tumors. In the last decades, progresses in pancreatic cancer therapy had remained exceedingly slow and disappointing offering minimal benefits in median survival which remains of less than 6 months and the maximum of 5 years in the 6% of patients. One of the major requirements for a successful cancer therapy is its ability to selectively kill cancer cells with minimal damage to healthy tissues. In this context, a great deal of attention focused on advanced nanoscale systems (i.e., nanomedicines) with the aim to overcome the limits associated to the traditional drug delivery modalities. Nanomedicines can indeed enhance drug properties by (i) offering protection from degradation, (ii) enabling controlled release and distribution and increasing bioavailability while reducing undesired side effects.In the current work we aimed to propose novel nanoscale-based strategies to optimize pancreatic cancer treatment taking into account the specific physio-pathology of this tumor. The first approach relied on the design of a targeted nanomedicine able to specifically bind receptors mainly expressed onto pancreatic cancer cells in order to selectively increase drug accumulation in these cells saving healthy ones.In a second approach, by combining two therapeutic agents in the same nanoparticle we constructed a multi-therapeutic drug delivery system capable to increase the therapeutic index of the combined therapy. In particular, taking advantages from the “squalenoylation prodrug approach”, the research activity of this Ph.D. work lead to the to design of (i) a novel peptide-functionalized squalenoyl gemcitabine nanoparticle and (ii) a tyrosine kinase inhibitor-loaded squalenoyl gemcitabine nanoparticle. Obtained nanoparticles were investigated with respect to their physico-chemical properties and in vitro antitumor activity. The efficacy of peptide-functionalized nanoparticles in impairing tumor growth was assessed in vivo on an experimental model of pancreatic cancer
Holten, Judith van. "Interferon beta for the treatment of rheumatoid arthritis?" [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2006. http://dare.uva.nl/document/39534.
Texto completoKraaijenhagen, Roderik A. "The etiology, diagnosis and treatment of venous thromboembolism". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/84205.
Texto completoRoos, Yvo Benjamin Walther Elisabeth Maria. "Fibrinolysis and antifibrinolytic treatment in aneurysmal subarachnoid haemorrhage". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/55676.
Texto completoMolenaar, Jacobus. "Treatment decision support for early breast cancer patients". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77496.
Texto completoWely, Madelon van. "Treatment regimens in ovulation induction and ovarian hyperstimulation". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77513.
Texto completoKhargi, Krishna. "Surgical treatment of atrial fibrillation using radiofrequency ablation". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2005. http://dare.uva.nl/document/79584.
Texto completoMattei, Maria Rosaria. "Mathematical modelling of multispecies biofilms for wastewater treatment". Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1182/document.
Texto completoThis dissertation relates to the applications of a one-dimensional mathematical model for multispecies biofilm formation and growth. The model consists of a system of nonlinear hyperbolic partial differential equations, describing the growth of microbial species in biofilms, and a system of semilinear parabolic partial differential equations, which governs substrate diffusion from the surrounding aqueous phase into the biofilm. Overall, this leads to a free boundary value problem, essentially hyperbolic. In a first study, the analysis and simulations of the initial phase of biofilm growth have been addressed. The resulting mathematical problem has been discussed by using the method of characteristics and the fixed-point theorem has been used to obtain existence, uniqueness and properties of solutions. A second aspect of the thesis deals with the analysis and prediction of population dynamics in multispecies biofilms for wastewater treatment. The model has been applied to simulate the bacterial competition and to evaluate the influence of substrate diffusion on microbial stratification for a nitrifying multispecies biofilm including Anammox bacteria and a sulfate-reducing biofilm. In both cases, the method of characteristics has been used for numerical purposes and the mass conservation equation plays a crucial role in checking the accuracy of simulations. The simulation results reveal that the model is able to evaluate properly the effects that boundary conditions exert on bacterial competition. Finally, the biofilm model has been extended to include the colonization phenomenon. The new model is able to take into account the invasion of new species diffusing from bulk liquid to biofilm, still based on a set of nonlinear hyperbolic partial differential equations for what concerns growth process. Indeed, the biological invasion process of new species into the biofilm has been modeled by a system of nonlinear parabolic partial differential equations. The invasion model has been successfully applied to simulate the invasion of heterotrophic bacteria in a constituted autotrophic biofilm and viceversa
Al-Obaidi, Rand. "In vitro enamel subsurface lesions : characterization and treatment". Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTT017/document.
Texto completoWhite spot lesion is the subsurface hypomineralization of enamel indicating the 1st stage of dental caries development. Early detection of incipient dental caries before it reaches the stage of cavitation offers an opportunity for effective dental care. The objectives of this study were to strengthen the idiom of minimally invasive treatment. In order to achieve the specified goals; we have identified a modified pH cycling model that can mimic the intraoral conditions leading to white spot lesions formation in a short time. In addition, non-invasive optical techniques, such as confocal Raman microscopy and multiphoton microscopy were used in this study to detect small changes in the enamel chemical composition in vitro.Furthermore, nano-indentation technique was used to detect the changes in the mechanical properties of enamel and relate them to those affecting its chemical composition after caries induction in order to add chemico-mechanical specificity in providing important information about subsurface lesions in enamel. The obtained results demonstrate a great potential for the examined techniques, providing a basis for interesting applications in the clinical diagnosis of various pathological conditions in dentistry. To treatment the incipient carious lesions non-invasively, the effectiveness of GC Tooth Mousse cream and nHA containing-dentifrice "KAREX" in the remineralization of demineralized enamel through localizing amorphous calcium phosphate at tooth surface has been inspected. The study indicated a lack of reliable evidence supporting the efficacy of remineralizing agents in the treatment of white spot lesions. Within the limitations of this study, further laboratory studies together with clinical research are therefore required to increase the available knowledge on this prevalent subject
Ouvinha, De Oliveira Rachel. "Development and evaluation of nanoparticles for cancer treatment". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA114808/document.
Texto completoThis thesis concerns the development and evaluation of nanoparticles for cancer treatment, and in particular to prostate cancer. The manuscript includes a literature review on the application of nanomedicine to the treatment of prostate cancer. In the first experimental part, functionalized gold nanoparticles were characterized and loaded with docetaxel by non covalent adsorption. These gold nanoparticles showed a sustained cytotoxic effect in vitro against prostate cancer cells. The second experimental part of this thesis describes a study of synthesis and nanoprecipitation of polyesters for the co-delivery of two chemotherapeutic drugs, docetaxel (DOC) and mitoxantrone (MIT). Polycaprolactone, poly(lactic acid) and poly (lactide-co-glycolide) were synthesized by ring-opening polymerization with different molecular weights of polyethylene glycol. Monodisperse nanoparticles with diameters of less than 80 nm were produced and were shown to be effective against prostate cancer cells when loaded with MIT and DOC. Moreover, a synergistic effect was observed using combinations of these nanoparticles. Therefore, these polyester based nanoparticles have potential clinical applications
Reyad, Mariam M. y O. Kravchuk. "Nanoparticles: creating and using in cancer treatment". Thesis, ХНУРЕ, 2021. https://openarchive.nure.ua/handle/document/15689.
Texto completoElia, Alessio. "Characterization of the GATE Monte Carlo platform for non-isocentric treatments and patient specific treatment plan verification at MedAustron - Vienna - Austria". Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI002/document.
Texto completoThe goal of this PhD is to develop and validate an independent dose calculation method in order to support the intense commissioning work of a Light Ion Beam Therapy (LIBT) facility, and to validate the Treatment Planning System (TPS) dose calculation. The work focuses on proton therapy treatments and is held as a collaboration between the CREATIS laboratory (Lyon, France) and the MedAustron - Vienna - Austria Ion Therapy Center (Wiener Neustadt, Austria). At MedAustron - Vienna - Austria, in order to exploit a sharp lateral penumbra for the proton beam as well as to improve the accuracy of the TPS dose calculation algorithms, the air gap between the treatment head window and the patient is reduced by moving the patient towards the treatment head. Therefore, non-isocentric treatments have to be accurately taken into consideration during modeling as well as validation phase as moving the target away from the room isocenter may lead to reduced treatment accuracy. In this study, the parametrization of the proton pencil beam follows the recommendations provided in Grevillot et al. (2011), but including a full nozzle description. Special care is taken to model the pencil beam properties in non-isocentric conditions, including the use of a Range Shifter (RaShi). The characterization of the pencil beam is based solely on fluence profiles measured in air and depth dose profile acquired in water. In addition, the presented model is calibrated in absolute dose based on a newly formalism in dose-area-product presented in Palmans and Vatnitsky (2016). Eventually, a detailed validation is performed in water, for three-dimensional regular-shaped dose distributions. Several parameters commonly exploited in proton dosimetry such as range, distal penumbra, modulation, field sizes and lateral penumbra for proton dosimetry are evaluated for validation purposes. The pencil beam optics model reached an accuracy within the clinical requirement of 1mm/10% and it is not affected by the complexity of non-isocentric treatments and the use of a RaShi. Ranges are reproduced within 0.2 and 0.35 mm (max deviation) without and with range shifter, respectively. The dose difference in reference conditions is within 0.5%. The 3D dose delivery validation in water was within 1.2% at maximum. The agreement of distal and longitudinal parameters is mostly better than 1 mm. The obtained results will be used as a reference for the future clinical implementation of the MedAustron - Vienna - Austria independent dose calculation system. As an example of the potential clinical outcome of the presented work, the patient specific quality assurance measurements performed in water have been successfully reproduced within the clinical requirement of 5% accuracy for a few patients
Wolde, Marije ten. "Management of venous thromboembolism etiology, diagnosis, prognosis and treatment /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/87021.
Texto completoVrugt, Jasper Alexander. "Towards improved treatment of parameter uncertainty in hydrologic modeling". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/77207.
Texto completoHeijden, Jeroen Frank van der. "Risk factors for bleeding during treatment with anti-thrombotics". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/75796.
Texto completoWeegink, Christine Joanne. "Hepatitis C infection the quest for new treatment strategies /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/74129.
Texto completoBuskens, Christianne Johanna. "The development of new treatment strategies for oesophageal cancer". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/76432.
Texto completoGast, Anjob Nathalie de. "New developments in imaging and treatment of intracranial aneurysms". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2008. http://dare.uva.nl/document/98739.
Texto completoPriyadarshi, Harsh. "Experimental and Numerical Study of Calcium Treatment of Steel". Thesis, Ecole centrale de Nantes, 2019. http://www.theses.fr/2019ECDN0017/document.
Texto completoIn order to diminish the harmful effects of aluminate inclusions and improve the castability of molten steel, calcium treatment is widely used in Aluminum killed steels. However, calcium treatment gives irregular results. Even with many efforts done to understand the behavior of calcium in liquid steel, it is not yet accurately predicted. Therefore, the mechanism by which the calcium dissolves into the liquid steel and transforms the solid inclusions must be understood to optimize the process conditions such as injection speed, injection depth, injection wire diameter, stirring time, etc. In order to understand the mechanism by which the calcium dissolves into the liquid steel, laboratory scale experiments have been performed in a small induction furnace of 2.5 kg metal capacity. The calcium injections are performed at the temperature below and above the boiling point of calcium. Then, the corresponding yields (calcium recovery) are compared. Rise of calcium droplet or bubble in liquid steel is a three-phase problem (calcium droplet or calcium bubble/liquid steel/air at the top). Therefore, an in-house scientific computational platform (ICI-tech) based on finite element methods is adapted to allow the modeling of such three-phase flows, which is validated using the classical benchmark issued from the literature. The dissolution model has been implemented in our software, and their validation has been performed. Thereafter, the rise of Calcium droplets and bubbles are studied in the liquid steel, and their respective average mass transfer coefficient in the liquid steel is reported. In order to study the calcium liquid/gas phase change, the nucleation model has been implemented in the code (ICI-tech). A typical test is performed where the growth of a bubble (water vapor) in uniformly superheated water and growth of a calcium bubble in uniformly superheated Ca liquid is computed
Meijer, Eline Maria. "Work-related complaints in the upper extremity prevention and treatment /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2006. http://dare.uva.nl/document/23449.
Texto completoSpuls, Phyllis Ira. "Clinical evidence for the treatment of moderate to severe psoriasis". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/61813.
Texto completoTil, Nico Peter van. "Lentiviral gene therapy for the treatment of inherited liver disease". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/49087.
Texto completoDing, Zhiji. "Engineering and microbial aspects of Anammox process in wastewater treatment". Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC1189/document.
Texto completoRemoval of nitrogen is mandatory in modern wastewater treatment plant (WWTP) due to its toxicity to both human and the ecosystem. A high level of nitrogen may cause eutrophication in aquatic system. Autotrophic nitrogen removal which combines partial nitritation and Anammox is an attractive technology which is suitable for high Ammonium strength wastewater with low organic carbon content. However the extreme slow growth of the Anammox bacteria with doubling time of 9-13 days hinders its wide full scale application. The aim of this research was to investigate the feasibility and operational strategy of Anammox enrichment from conventional aerobic sludge (Reactor ASR), denitrification sludge (Reactor DSR) and anaerobic sludge (Reactor ANR) using sequencing batch reactor (SBR). Anammox process was successfully established in DSR with a total nitrogen removal of approximately 80% under strict oxygen control after 150 days which is confirmed by chemical composition of the influent/effluent as well as microbial analysis. Under the same operational condition, ANR reached only 20-30% total nitrogen removal. With a shorter hydraulic retention time (HRT) and insufficient oxygen control, ASR reached 50-60% total nitrogen removal after 240 days. All the reactors experienced fluctuating performances during the enrichment process, which is believed to be the consequence of inhibitory factors such as dissolved oxygen, free nitrite and free ammonia as well as undesirable coexisting bacteria which compete for the same substrate. The denaturing gradient gel electrophoresis (DGGE) band from the amplified DNA samples extracted from ASR during different enrichment stage shows a clear evolution of the microbial composition. Extracellular polymeric substances (EPS) from different Anammox biomass have been extracted and characterized by quantitative and qualitative analysis to investigate its correlation with the enrichment process in a lab scale bioreactor. A decrease of protein to polysaccharide (PN/PS) ratio and an increase in total EPS extraction yield were observed during the enrichment process. The three dimensional excitation emission matrix (3D-EEM) showed similar location of the fluorescence peaks for all samples while samples with Anammox bacteria possess two distinct peaks in the low excitation wavelength range. Multi-excitation peaks may occur as evidenced by the identical fluorescence chromatogram after size exclusion chromatography (SEC) separation at excitation/emission 221/350 nm and 280/330 nm. Ultraviolet (UV) absorbance at 210 nm was recorded simultaneously with fluorescence detection at excitation/emission wavelength 222/300 nm, 221/350 nm and 280/330 nm after separated by SEC. With the enrichment of Anammox bacteria, UV chromatogram showed increase in both intensity and number of peaks, whereas fluorescence chromatograms showed similar peak number and only increase in intensity. An increase of hydrophobicity was observed during the enrichment process. The results of this study are expected to extend the knowledge of EPS evolution of Anammox enrichment process as well as providing novel approach for the characterization of EPS extracted from Anammox sludge
Pham, Dinh duy. "Particulate systems for lung delivery of pyrazinamide for tuberculosis treatment". Thesis, Paris 11, 2014. http://www.theses.fr/2014PA114814/document.
Texto completoPyrazinamide is the only first intention anti-TB drug active on the dormant form ofMycobacterium tuberculosis. Its oral prescription reduces treatment duration from 9to 6 months. We have developed dosage forms of pyrazinamide to administer directlyto the lungs to locally increase the concentration of pyrazinamide at the diseased siteand further reduce the duration of treatment. Two dosage forms of pyrazinamidewere optimized: a dry powder for inhalation and polymer nanoparticles administrableeither by liquid nebulization or as a dry powder.The dry powder for inhalation is composed of particles obtained by spray-drying.Pyrazinamide was dissolved in a mixture 70/30 v/v ethanol/water. After spray-dryingthe solution, we obtained large crystalline particles that were unstable and notsuitable for pulmonary administration because of their large sizes. To obtain powderssuitable for pulmonary delivery to the deep lungs, and stable in terms of size andphysico-chemical characteristics, we reviewed a variety of excipients: phospholipids,ammonium bicarbonate, leucine, hyaluronic acid. We have shown that by combiningall these excipients with the drug, one could obtain particles of about 6 microns, witha low tapped density and stable for 4 weeks under conditions of conventionalstorage.The in vitro aerodynamic evaluation of the optimized powder showed the existence oftwo populations of particles: large particles with a low content of pyrazinamide andsmall particles with high pyrazinamide content. These two populations derived fromthe segregation of different components during the drying process. To obtainparticles of uniform composition, the drying rate was decreased. As a result, weobtained homogeneous powders with good aerodynamic properties for delivery intothe lungs: fine particle fraction of 40.1 ± 1.0% and alveolar fraction of 29.6 ± 3.1%.This powder was then evaluated in vivo in healthy rats and we measured theconcentrations of pyrazinamide in plasma and bronchoalveolar lavage fluid afterintratracheal insufflation of the powder in comparison with intravenous administrationof a solution of pyrazinamide. The intratracheal insufflation of the powder and theintravenous injection lead to similar pharmacokinetic parameters proving that theparticles dissolve rapidly after deposition and pyrazinamide crosses efficiently thelung barrier to reach the systemic circulation. Surprisingly, pyrazinamide disappears4faster form lung lining fluid when administered by pulmonary insufflation than afterintravenous administration. Pulmonary delivery of pyrazinamide appears as anattractive alternative to oral administration of the drug and must now be tested in ananimal model of infection to assess its efficacy against Mycobacterium tuberculosis.In parallel, we have optimized the encapsulation of pyrazinamide in polymericnanoparticles of poly (lactide-co-glycolide) PLGA lower than 200 nm andmonodisperse, using experimental design. The pyrazinamide-loaded PLGAnanoparticles were prepared by the double emulsion method. The Taguchi methodwas used to optimize the formulation parameters. The type of solvent, thepyrazinamide / PLGA weight ratio and aqueous to organic phases volume ratio wererelevant parameters. The Taguchi method has proven effective to optimizenanoparticles of about 170nm with a polydispersity index < 0.1, a zeta potential ofapproximately -1mV and an encapsulation efficiency of 7-8% or 3% pyrazinamide drugloading
Bakker, Egbert. "Congenital hypothyroidism beyond neonatal T4 screening progress in diagnostics and treatment /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/81207.
Texto completoKoster, Petra Henriette Louise. "Analysis of portwine stain disfigurement and pulsed dye laser treatment results". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/55263.
Texto completoGinkel, Rijk van. "Defecation disorders and chronic abdominal pain in children pathophysiology and treatment /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/62191.
Texto completoPloeger, Lennert Simon. "Image-based verification of patient setup and treatment geometry in radiotherapy". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/86839.
Texto completoMoussaoui, Rachida El. "Duration of antibiotic treatment and symptom recovery in community-acquired pneumonia". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2006. http://dare.uva.nl/document/80551.
Texto completoMutsaerts, Eduard Lambert Alexander Ronald. "Surgical treatment of liver and lung metastases new techniques and outcomes /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/76271.
Texto completoGravas, Stavros. "TUMT treatment of BPH from evidence based guidelines to clinical practice /". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/45890.
Texto completoAnthiya, Ramamoorthi Shubaash. "Development of miRNA-mimic nanoparticles for the treatment of brain tumours". Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0052/document.
Texto completoGlioblastoma are aggressive brain tumours with a median survival of 15 months even with the best currently available treatment options. microRNAs (miRNA) are ~23 nucleotide natural silencing RNAs that have great potentials to improve cancer treatment outcomes. Lack of a safe, stable and efficient delivery system has, however, hindered the use of miRNAs inclinical applications. The aim is therefore to develop amiRNA delivery system adapted to glioblastoma using linear chain cationic polyamidoamine (PAA) polymers.The first part involved the development of luciferase assay that combined the measurement of gene-knockdown efficiency and cytotoxicity of miRNA nanoparticles. The simple two-step procedure was more effective and sensitive compared to the conventional protein-based normalization method. The second part was focused on the development of miRNA nanoparticles. In the initial phase, conditions required for maximum miRNA-polymer binding was achieved, however, the newly developed miRNA-PAA nanoparticlesdid not produce significant functional gene-knockdown after cell treatment. The second stage was focused on the optimization of nanoparticle formulation as a function of stability in physiologicalionic concentration. Stable PAA-nanoparticles displaying moderate cellular uptake and gene-knockdown were obtained. The final stage of development was focused on PAA-nanoparticle tagging with biotin, which improved their cellular uptake. This work developed simple and informative luciferase assay ; the stability of miRNA-PAA-nanoparticles was improved by thiol-crosslinking and the functional performance was strongly enhanced by a simple butsmart method of ligand tagging
Siangsanun, Vorasiri. "Hybrid process : hydrocyclone, coagulation, floculation and flotation for water treatment process". Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0019/document.
Texto completoThe aim of this study is to develop a hybrid process which combines withcoagulation, floculation and flotation process in a hydroclone for water treatmentprocess. The development is for characterization the hydrodynamics of this process andto find the optimum condition for water treatment process.The hydrodynamics characterization study is carried out by the numericalsimulation (Computational Fluid Dynamics) and experimental work by Dopplerultrasound velocimetry technique to study the hydrodynamics for the further research.The results are used for validating the oil droplet experimental technique and to be thebasis knowledge to explain the phenomena in the hybrid process. Laser diffractiontechnique is involved for determining the micro bubbles size and also study on theparameter affects to the size. The experimental work of a developed hybrid pilot plant is studied with synthesisraw water and natural river water. The objective of this study is to apply this hybridprocess for the water treatment. The parameters have been varied in many operatingconditions to indicate the separation and the water treatment phenomena such as rawwater characteristic, coagulant - floculant type and concentration, air fraction and inletflow rate
Laruelo, Fernandez Andrea. "Integration of magnetic resonance spectroscopic imaging into the radiotherapy treatment planning". Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30126/document.
Texto completoThe aim of this thesis is to propose new algorithms to overcome the current limitations and to address the open challenges in the processing of magnetic resonance spectroscopic imaging (MRSI) data. MRSI is a non-invasive modality able to provide the spatial distribution of relevant biochemical compounds (metabolites) commonly used as biomarkers of disease. Information provided by MRSI can be used as a valuable insight for the diagnosis, treatment and follow-up of several diseases such as cancer or neurological disorders. Obtaining accurate and reliable information from in vivo MRSI signals is a crucial requirement for the clinical utility of this technique. Despite the numerous publications on the topic, the interpretation of MRSI data is still a challenging problem due to different factors such as the low signal-to-noise ratio (SNR) of the signals, the overlap of spectral lines or the presence of nuisance components. This thesis addresses the problem of interpreting MRSI data and characterizing recurrence in tumor brain patients. These objectives are addressed through a methodological approach based on novel processing methods that incorporate prior knowledge on the MRSI data using a spatio-spectral regularization. As an application, the thesis addresses the integration of MRSI into the radiotherapy treatment workflow within the context of the European project SUMMER (Software for the Use of Multi-Modality images in External Radiotherapy) founded by the European Commission (FP7-PEOPLE-ITN framework)
Karim, Reatul. "Design of Nanocarriers to Deliver Small Hydrophobic Molecules for Glioblastoma Treatment". Thesis, Angers, 2017. http://www.theses.fr/2017ANGE0055/document.
Texto completoThe aim of this thesis was to develop nanocarriers for efficient delivery of two low molecular weight hydrophobic drugs, apigenin (AG) and a ferrocifen-derivative(FcTriOH) to glioblastoma (GBM) as potential therapeutic strategies. Firstly, two liposomes, a lipid nanocapsule (LNC), and a polymer-based nanocapsule were develope dand compared by their physicochemical characteristics, drug loading capacity, storage stability, stability in biological serum, drug release profiles, complement consumption and toxicity. Due to various advantageous characteristics, the LNCs were selected for further optimization. Secondly, the LNCs were surface functionalized by adsorbing a GBM-targeting cellpenetratingpeptide (CPP). The CPP concentration increased to significantly enhance LNCinternalization in human GBM cells. The uptake mechanisms observed in U87MG cellswere : micropinocytosis, clathrin-dependent and caveolin-dependent endocytosis. Moreover, the optimized CPP-functionalized LNCs were internalized preferentially in theGBM cells compared to normal human astrocytes. Additionally, the in vitro efficacy of the AG-loaded and FcTriOH-loaded LNCs was evaluated. The FcTriOH-loaded LNC-CPP showed the most promising activity with a low IC50 of 0.5 μM against U87MG cells. Intracerebral administration of the LNCs in a murine orthotopic U87MG tumor modelshowed possible toxic effects and the need for dose optimization. Finally, studies inmurine ectopic U87MG tumor model showed promising activity after parenteral administration of the FcTriOH-loaded LNCs. Overall, these results exhibit the promising activity of FcTriOH-loaded LNCs as potential alternative GBM therapy strategy
Alrhmoun, Mousaab. "Hospital wastewaters treatment : upgrading water systems plans and impact on purifying biomass". Thesis, Limoges, 2014. http://www.theses.fr/2014LIMO0042/document.
Texto completoThis research investigates the removal of pharmaceutics present in hospital wastewaters by conventional activated sludge and MBR systems of treatment and under various operating conditions to elucidate the removal mechanism and increasing the efficiency of removal. In this study, laboratory scales was composed to four types of reactors used: Bach reactors, conventional activated sludge, submerged membrane bioreactor and extern membrane bioreactor and all these reactors were feed in reel hospital wastewaters. Different Technical studies and many experiments were affected to develop the MBR systems: the beginning was with biofilm supports media and the attached growth of biofilms in the reactor and the finish by using the powder activated carbon. En general, the reported results show high performance for the MBR with compared to CAS system in treating the basic organic pollutants. Presence the biofilm supports media was very important for high removal of pharmaceuticals compounds from the hospital wastewaters. The presence of the pharmaceutical compounds stimulated the mechanisms of survival higher production of EPS. Fouling potential seems to be linked more closely to polysaccharides than other EPS. In this study, for the first time, was employed the confocal microscopy for qualities and quantities analyses for the EPS in the biologic reactors. Microscopic observations were confirmed the chemical analyses of EPS compounds. In final experiment 21 pharmaceuticals were eliminated from the hospital effluents during the treatment in extern membrane (UF) with modified granular activated carbon. In addition to many biomolucles analyses which study the principals impact of hospital effluents on the microorganism’s especially the bacteria in using different, recent techniques. This study demonstrates by reel conditions the role the developed MBR systems in treating the hospital effluents and its impact direct on the environment
Lucas, Cornelis. "Efficacy of low level laser treatment in the management of chronic wounds". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/84893.
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