Tesis sobre el tema "Pestides"
Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros
Consulte los 50 mejores tesis para su investigación sobre el tema "Pestides".
Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.
También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.
Explore tesis sobre una amplia variedad de disciplinas y organice su bibliografía correctamente.
Devilliers, Esther. "Modélisation micro-économétrique des choix de pratiques de production et des utilisations d'intrants chimiques des agriculteurs : une approche par les fonctions de production latentes". Thesis, Rennes, Agrocampus Ouest, 2021. http://www.theses.fr/2021NSARE058.
Texto completoCropping management practices is an agronomic notion grasping the interdependence between targeted yield and input use levels. Subsequently, one can legitimately assume that different cropping management practices are associated to different production functions. To better understand pesticide dependence – a key point to encourage more sustainable practices – one have to consider modelling cropping management practices specific production functions.Because of the inherent interdependence between those practices and their associeted yield and input use levels, we need to consider endogenous regime switching models.When unobserved, the sequence of cropping management practices choices is considered as a Markovian process. From this modelling framework we can derive the cropping management choices, their dynamics, their associated yield and input use levels. When observed, we consider primal production functions to see how yield responds differently to input uses based on the different cropping management practices. Thus, we can assess jointly the effect of a public policy on input use and yield levels.In a nutshell, in this PhD we are aiming at giving some tools to evaluate the differentiated effect of agri-environmental public policies on production choies and on the associated yield and input use levels
Woida, Angela E. "Pesticides". Thesis, The University of Arizona, 1995. http://hdl.handle.net/10150/292163.
Texto completoLam, Ding. "An overview of pesticide consumption and management in Hong Kong /". Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22264401.
Texto completoPieters, Barry Johan. "Daphnid population responses to pesticides". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/45997.
Texto completoRolland, Olivier. "Toxicologie des pesticides systémiques organophosphorés". Paris 5, 1988. http://www.theses.fr/1988PA05P034.
Texto completoSolís, Sánchez Cristina. "Geography of pesticide exposure in the Lower Valley (El Paso County, Texas)". To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Texto completoSmith, Edward James. "The fate of pesticides on plants". Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.488746.
Texto completoKhor, Jen Nee. "Oxidation of pesticides in photocatalytic reactors". Thesis, University of Nottingham, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403398.
Texto completoKah, MeÌlanie. "Behaviour of ionisable pesticides in soils". Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440684.
Texto completoQuivet, Étienne. "Analyse du comportement environnemental de pesticides". Lyon 1, 2004. http://www.theses.fr/2004LYO10278.
Texto completoPapa, Kassim. "Variabilité de l'effet mitochondrial des pesticides". Aix-Marseille 2, 2007. http://www.theses.fr/2007AIX20662.
Texto completoLohner, Timothy W. "Effects of pH, temperature, and sediment on the aquatic fate and toxicity of selected pesticides /". The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487332636474975.
Texto completoZheng, Shan-qiang. "Comportement de divers pesticides dans les sols. Application en milieux tropical et méditerranéen". Montpellier 1, 1994. http://www.theses.fr/1994MON13504.
Texto completoBouya, Houceine. "Dégradation par voie électrochimique de nitro-benzaldehyde et cyperméthrine et étude cinétique d’oxydation atmosphérique du bupirimate et nitrobenzaldehyde". Thesis, Reims, 2015. http://www.theses.fr/2015REIMS018/document.
Texto completoThis thesis focused on the study of semi-volatile organic compounds (SVOC), including pesticides and nitro-aromatics compounds in the two compartments, water and atmosphere. The first part of this work concerns the optimization of the different experimental parameters in order to mineralize two compounds (cypermethrin and of 2-Nitrobenzaldehyd), those parameters are initial concentration of compounds, concentration of the electrolyte support, temperature and the density of the current imposed. This mineralization has been done by a direct oxidation through the electrodes of the tin oxide (SnO2) and Boron Doped Diamond (BDD). The degradation process has been followed by the DCO analyzes and the gas chromatography. It has been shown that the rate of mineralization exceeds 80 % for the cypermethrine compound using BDD electrode. The second part is devoted to study the reactivity of bupirimate in heterogeneous phase using ozone and OH radicals as oxidant. The obtained results show that the rate constant values of the analyte are (1,06 ± 0,87) x 10-12 and (5,4 ± 0,3) x 10-20 (cm3 molecule-1 s-1) relative to heterogeneous OH-oxidation and O3, respectively. Such values implicate tropospheric life-times that vary from a few days to several months, meaning that these compounds are relatively persistent and may be transported to regions far from their point of application. The UV-absorption spectra and homogeneous OH-reactivity of 2-Nitrobenzaldehyde compound in the gas phase are investigated. The kinetic studies have been carried out in an atmospheric chamber coupled to an IR spectrometer. The results obtained indicate that the compound studied is susceptible to photolysis in the atmosphere and he exhibit strong reactivity towards OH-radicals. Generally speaking, the atmospheric life-time of this compound is relatively short, in the order of a few minutes to hours and he is non-persistent. Rate constants present a slight variation with the temperature
Fragoeiro, Silvia. "Use of fungi in bioremediation of pesticides". Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/906.
Texto completoCravey, Suzanne Perritt. "Are pesticides a factor in bird declines? /". Connect to this title online, 2005. http://www.orwapif.org/pdf/pesticides%5Fbirds.pdf.
Texto completoTermtanun, Mutsee. "Photocatalytic degradation of pesticides using TiO2 nanoparticles". Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13827/.
Texto completoOdon, Akanimo P. "Effect of Pesticides on Non -Target Species". Thesis, Lancaster University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531707.
Texto completoRobinson, Roger Kevin. "Computational study of carbamate and organophosphate pesticides". Thesis, University of Reading, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433451.
Texto completoFitzpatrick, Lisa Jane. "Extraction and photolysis of pesticides on soil". Thesis, Northumbria University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325378.
Texto completoBhandal, Narotam Singh. "Arthropod chloride channels as targets for pesticides". Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335651.
Texto completoMackay, Neil. "Modelling the fate of pesticides in soil". Thesis, University of York, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304103.
Texto completoFogg, Paul. "Fate and behaviour of pesticides in biobeds". Thesis, Cranfield University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405625.
Texto completoAguilar, Carolina. "Pesticides and pesticide combinations on brain neurochemistry". Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/34697.
Texto completoPesticides have been suggested to play a role in the development of many neurodegerative diseases including Parkinson's disease and Alzheimer's disease. Additionally, it has been suggested that exposure to pesticides and other environmental chemicals during the early stages of life could result in an increased vulnerability to such substances that could lead to neurotoxicity and degeneration late in life. We hypothesized that exposure to mixtures of certain pesticides could change neurotransmitter levels and cellular oxidative stress and that this would be greater in mice exposed early and later in life than mice exposed only as adults. We studied the effects of permethrin (PR) (a pyrethroid type I) and endosulfan (EN) (an organochlorine) on the levels of catecholamines, indolamines, acetylcholinesterase, lipid peroxidation and α-synuclein in the brain of mice. These pesticides have different structures but both are known to modify the kinetics of voltage-sensitive ion channels and calcium ion flux/homeostasis that could affect the release of several neurotransmitters. The study consisted of two experiments: In the first experiment, adult C57Bl/6 mice (7-9 months old) were injected, intraperitoneally, with the following treatments: EN 4.3, 2.15 mg/kg; PR 150, 15 mg/kg and their mixtures EN 4.3 + PR 150 and EN 2.15 + PR 15 mg/kg. Mice were sacrificed 24 hrs after the last injection. In the second experiment, doses consisted of EN 0.7, 1.4 mg/kg, PR 1.5, 15 mg/kg and their mixtures EN 0.7 + PR 1.5 mg/kg and EN 1.4 + PR 15 mg/kg were given to juvenile mice intraperitoneally daily during a period of two weeks from postnatal day 5 to 19. Mice were then, left undisturbed with their dams. Re-challenge was performed when mice were 7-9 months old and dosages of EN 4.3, 2.15 mg/kg, PR 150, 15 mg/kg and their mixtures, EN 4.3 + PR 150 and EN 2.15 + PR 15 mg/kg were given intraperitoneally every other day during a period of two weeks to match the treatments when pesticide exposure was only as adults. Mice were sacrificed 24 hrs after the last injection.
The corpora striatum was extracted and analyzed by HPLC for catecholamines (dopamine, DOPAC, homovalinic acid and norepinephrine) and indolamines (serotonin and 5-HIAA). In general low doses of permethrin and endosulfan alone and in combination (EN 2.15 + PR 15 mg/kg) altered the levels of catecholamines and indolamines in both studies with adult mice and mice dosed as juveniles and re-challenged as adults. Catecholamine and indolamines levels were affected to a greater extent in the adult mice than in mice dosed as juveniles and re-challenged as adults, when compared to controls.
Acetylcholinesterase was increased under both exposure situations but again adult mice seemed to be more affected than mice dosed as juveniles and re-challenged as adults.
Because reactive oxygen species have been implicated in the development of Parkinson's disease, and are known to cause degradation of certain neurotransmitters, we monitored the levels of lipid peroxides in brain cortex as an indicator of free radical tissue damage. The peroxide levels were measured by thiobarbituric acid reactive products (TBARS). Increased levels of lipid peroxides were significant in the low dose treatment groups of the adult study. However, there seemed to be a pattern between the levels of dopamine and DOPAC in the striatum and the levels of peroxidation in cortex. The presence of dopamine metabolites appeared to be related to high levels of peroxidation within the basal ganglia and up-regulation of proteins such as α-synuclein. Western blots of α-synuclein in both experiments of the study showed intense double and triple bands that corresponded to aggregated α-synuclein. In general, when compared with controls, mice dosed as juveniles and re-challenged as adults did not alter the above parameters as much as mice dosed only as adults. Instead, the mice first dosed as juveniles seemed to develop an adaptation response to the later exposure of these pesticides.
Taking all these results into account, early exposure and re-challenge with permethrin and endosulfan in this study appeared to induce a protective response against neurochemical changes in the brain of these mice. In addition, low doses of these pesticides and the low dose combination mixture seem to exert an effect on the parameters studied.
Therefore, exposure to pesticides such as endosulfan and permethrin and their combinations could make a contribution towards the initiation or aggravation of biochemical neurodegenerative diseases such as Parkinson's and Alzheimer's diseases.
Master of Science
Brimecombe, Rory Dennis. "Voltammetric analysis of pesticides and their degradation". Thesis, Rhodes University, 2006. http://hdl.handle.net/10962/d1015724.
Texto completoНаземцева, Ярослава Олександрівна, Ярослава Александровна Наземцева y Yaroslava Oleksandrivna Nazemtseva. "Human and environmental risks of obsolete pesticides". Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33529.
Texto completoZhu, Danyun. "Determination of Residential-Use Turf Pesticides in Surface and Ground Water by HPLC/DAD". Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/ZhuD2003.pdf.
Texto completoSchmitt, Philippe. "Potentiels de l'électrophorèse capillaire dans l'analyse des pesticides et des substances humiques : application à l'étude des interactions pesticides - substances humiques". Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL117N.
Texto completoPinkham, Wade A. "A Lateral Field Excited Acoustic Wave Pesticide Sensor". Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/PinkhamWA2007.pdf.
Texto completoMiranda, Jamilette. "Neurotoxicity after poisonings with organophosphate pesticides in Nicaragua /". Stockholm : Arbetslivsinstitutet, 2003. http://diss.kib.ki.se/2003/91-7045-668-2/.
Texto completoMazlan, Norida. "Pesticides and food safety for Malaysian fresh vegetables". Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435436.
Texto completoNisar, Rizwan. "Common pesticides and the development of Parkinson's disease". Thesis, University of Newcastle Upon Tyne, 2011. http://hdl.handle.net/10443/1079.
Texto completoFenlon, Katie Alexandra. "Fate, Behaviour and Bioavailability of Pesticides in Soils". Thesis, Lancaster University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504165.
Texto completoBuffin, David Gareth. "UK pesticides policy - a policy paradigm in transition?" Thesis, City University London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511776.
Texto completoMcCracken, Nigel William. "Role of esterases in the detoxification of pesticides". Thesis, University of Newcastle Upon Tyne, 1991. http://hdl.handle.net/10443/550.
Texto completoOrton, Frances. "Investigation into the effects of pesticides on amphibians". Thesis, Brunel University, 2008. http://bura.brunel.ac.uk/handle/2438/2456.
Texto completoCagnini, Andrea. "A disposable biosensor for organophosphorus and carbamic pesticides". Thesis, Cranfield University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339885.
Texto completoÖzer, Serdar Sofuoğlu Aysun. "Measurement Of Henry's Law Constant Of Organochlorinated Pesticides/". [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/kimyamuh/T000344.pdf.
Texto completoKeywords: Organic pollutants, thermodynamic properties, Henry's law constant, Organochlorinated pesticides. Includes bibliographical references (leaves. (leaves. 49-53).
Lord, Simon. "The interactions of pesticides with free-living protozoa". Thesis, University of Bath, 1986. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760558.
Texto completoWong, Hie Ling. "Assessment of non-dietary, human exposure to pesticides". Thesis, University of York, 2018. http://etheses.whiterose.ac.uk/21539/.
Texto completoBlackwell, Alison. "The behavioural effects of formamidine pesticides in Lepidoptera". Thesis, University of Bristol, 1987. http://hdl.handle.net/1983/d31fbc39-5dd8-4285-abd5-75dd8f2e99b2.
Texto completoFalconer, Katherine. "Environmental policy and the use of agricultural pesticides". Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/271974.
Texto completoVian, Laurence. "Etude de l'exposition aux pesticides dans les serres". Montpellier 1, 1985. http://www.theses.fr/1985MON13510.
Texto completoBurdge, Ryan Brennan. "Songbirds, Pesticides, and Golf Courses: Exposure and Effects". W&M ScholarWorks, 2009. https://scholarworks.wm.edu/etd/1539626888.
Texto completoZheng, Guanyu. "Bioremediation of organochlorine pesticides contaminated soil with microemulsions". HKBU Institutional Repository, 2011. http://repository.hkbu.edu.hk/etd_ra/1245.
Texto completoSuddaby, Laura. "Investigation into irreversible sorption of pesticides to soil". Thesis, University of York, 2012. http://etheses.whiterose.ac.uk/2725/.
Texto completoKhoury, Randa. "Comportement de deux produits phytosanitaires dans deux sols typiques libanais". Perpignan, 1999. http://www.theses.fr/1999PERP0346.
Texto completoIsherwood, Karen Elizabeth. "Quorum sensing in Yersinia pestis". Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364667.
Texto completoBlackman, Lois. "Strain differentiation of Yersinia pestis". Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/29822.
Texto completoGadbury, Calvin J. "Measure the efficacy of Indiana's private pesticide applicator certification program on private pesticide applicator's attitudes toward methods of limiting pesticide exposures". Virtual Press, 2001. http://liblink.bsu.edu/uhtbin/catkey/1221288.
Texto completoDepartment of Natural Resources and Environmental Management