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Silva, Bruno Drumond Mello. « ΤΗΣ ; ΜΟΥΣΙΚΗΣ ; ΤΟΠΟΣ ; ΤΗΙ ; ΠΟΛΙΤΕΙΑΙ ; : sobre a educação elementar através da música na República de Platão ». Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/8/8133/tde-29032010-172740/.
Texte intégralThe aim of this work may be reduced to the task of presenting Platos analysis of μονσικη in Republic II and III, demonstrating the central role it plays on the education of the young and thus, on the constitution of the πολιτειι , which are its objectives, and how it can mitigate Books X claims against poetry
Al, Afifi Zayed Hassan. « Strategies and public policy models of effective human capital, talents and workforce development : an investigation into the effectiveness of different scholarship programmes in the United Arab Emirates, UAE ». Thesis, London Metropolitan University, 2016. http://repository.londonmet.ac.uk/919/.
Texte intégralKantawong, Fahsai. « Use of comparative proteomics to study a novel osteogenic nanotopography ». Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/919/.
Texte intégralBastos, Heloisa Flora. « Changing teachers' practice : towards a constructivist methodology of physics teaching ». Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/919/.
Texte intégralHumphris, Amy. « Occupational regulation in the UK : prevalence and impact ». Thesis, London School of Economics and Political Science (University of London), 2013. http://etheses.lse.ac.uk/919/.
Texte intégralBrown, Anthony Murray. « Very high energy emission and multi-wavelength campaigns of the BL Lac object PKS 2155-304 ». Thesis, Durham University, 2006. http://etheses.dur.ac.uk/919/.
Texte intégralOliva, Enrico <1976>. « Argumentation and artifacts for intelligent multi-agent systems ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/919/.
Texte intégralChandler, Christopher N. « Blind injustice : Jesus' prophetic warning against unjust judging (Matthew 7:1-5) / ». St Andrews, 2010. http://hdl.handle.net/10023/919.
Texte intégralLópez, Alcalá Cristina. « Regulación de K-Ras por Ca2+/CaM ». Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/919.
Texte intégralEsta superfamilia comprende más de 150 proteínas (Fig. 1) con homólogos encontrados en Drosophila, C.Elegans, S. cerevisiae, Dictyostelium y en plantas. Las proteínas Ras más conocidas y estudiadas, H, N y K-Ras, son los miembros fundadores de esta gran familia, la cual se divide en 5 subfamilias en base a similitudes en la secuencia y funcionalidad de las proteínas que las componen: Ras, Rho, Rab, Ran y Arf (Fig. 2) (Wennerberg, Krister et al. 2005)
Además de compartir una estructura parecida, todas estas proteínas tienen unas características generales comunes: tienen capacidad de unir nucleótidos de guanina (GTP o GDP), poseen actividad GTPasa intrínseca y necesitan estar unidas a sistemas de membrana para realizar su función.
Las GTPasas de la superfamilia Ras funcionan como interruptores moleculares regulados por la unión al nucleótido GTP o GDP. Existen unas secuencias consensus, llamadas "G box", comunes a todas las proteínas de la superfamilia Ras, en el extremo N-terminal (Takai, Yoshimi et al. 2001). Estas secuencias son las responsables para la interacción con GDP o GTP y para la actividad GTPasa.
Estas pequeñas GTPasas tienen una elevada afinidad por el GDP y el GTP y presentan baja actividad GTPasa intrínseca. El ciclo GDP/GTP está controlado por dos tipos de proteínas reguladoras: Las proteínas intercambiadoras de nucleótidos "GEFs" (Guanine-nucleotide-exchange factors) promueven la formación de la forma activa de la GTPasa unida a GTP (Schmidt, Anja and Hall, Alan 2002) (Mitin, N. et al. 2005) y las proteínas "GAPs" (GTPase-activating proteins) aceleran la hidrólisis del GTP y por tanto aceleran la formación de la forma inactiva de la GTPasa unida a GDP(Bernards, Andre and Settleman, Jeffrey 2005). Las GTPasas de una misma rama de la superfamilia pueden compartir o no diferentes GEFs y GAPs. Las GTPasas de ramas diferentes presentan diferentes GAPs y GEFs en cuanto estructura pero que, mecanísticamente son similares.
El que la GTPasa esté unida a GTP o GDP comporta dos conformaciones similares pero muy distintas en dos regiones muy concretas de la proteína: la Switch I y la Switch II. El cambio conformacional de la proteína unida a GTP posee una elevada afinidad por los efectores. Estos cambios en el Switch I y II son los que permiten a las proteínas reguladoras, GAPs y GEFs y, a las efectoras, sensar el nucleótido al que la GTPasa se encuentra unido. Las proteínas Arf y las proteínas Ran tienen secuencias en el extremo amino y carboxi terminal respectivamente, que también sufren unos cambios conformacionales significativos al estar unidas a GTP o GDP.
En general las GTPasas son activas cuando se encuentran unidas a GTP, pero, para las proteínas Rab, Arf y Ran el estar unidas a GDP comporta también unas determinadas funciones específicas.
La presente tesis se concentra en dos objetivos: el primero, determinar el dominio de unión de K-Ras a Calmodulina, y el segundo, investigar cómo afecta esta interacción a la funcionalidad de K-Ras
Canhoto, Olinda. « Applications of volatile fingerprint sensor arrays for rapid detection of environmental contaminants ». Thesis, Cranfield University, 2005. http://hdl.handle.net/1826/919.
Texte intégralAdedapo, Remilekun. « Disinfection By-Product Formation in Drinking Water Treated with Chlorine Following UV Photolysis & ; UV/H2O2 ». Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/919.
Texte intégralPonder, Bentley. « Undergraduates' Attitudes Toward the Causes of Poverty and Homelessness : Individualistic or Structural ». TopSCHOLAR®, 1995. http://digitalcommons.wku.edu/theses/919.
Texte intégralGatogang, Ballbo Patric. « The economic contribution of trout fly-fishing to the economy of the rhodes region ». Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/919.
Texte intégralYeboah-Forson, Albert. « Hydrogeophysical Characterization of Anisotropy in the Biscayne Aquifer Using Geophysical Methods ». FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/919.
Texte intégralSalmeron, Raquel. « Magnetorotational Instability in Protostellar Discs ». Physics, 2005. http://hdl.handle.net/2123/919.
Texte intégralWe investigate the linear growth and vertical structure of the magnetorotational instability (MRI) in weakly ionised, stratified accretion discs. The magnetic field is initially vertical and perturbations have vertical wavevectors only. Solutions are obtained at representative radial locations from the central protostar for different choices of the initial magnetic field strength, sources of ionisation, disc structure and configuration of the conductivity tensor. The MRI is active over a wide range of magnetic field strengths and fluid conditions in low conductivity discs. For the minimum-mass solar nebula model, incorporating cosmic ray and x-ray ionisation and assuming that charges are carried by ions and electrons only, perturbations grow at 1 AU for B < 8G. For a significant subset of these strengths (200mG < B < 5 G), the growth rate is of order the ideal MHD rate (0.75 Omega). Hall conductivity modifies the structure and growth rate of global unstable modes at 1 AU for all magnetic field strengths that support MRI. As a result, at this radius, modes obtained with a full conductivity tensor grow faster and are active over a more extended cross-section of the disc, than perturbations in the ambipolar diffusion limit. For relatively strong fields (e.g. B > 200 mG), ambipolar diffusion alters the envelope shapes of the unstable modes, which peak at an intermediate height, instead of being mostly flat as modes in the Hall limit are in this region of parameter space. Similarly, when cosmic rays are assumed to be excluded from the disc by the winds emitted by the magnetically active protostar, unstable modes grow at this radius for B < 2 G. For strong fields, perturbations exhibit a kink at the height where x-ray ionisation becomes active. Finally, for R = 5 AU (10 AU), unstable modes exist for B < 800 mG (B < 250 mG) and the maximum growth rate is close to the ideal-MHD rate for 20 mG < B < 500 mG (2 mG < B < 50 mG). Similarly, perturbations incorporating Hall conductivity have a higher wavenumber and grow faster than solutions in the ambipolar diffusion limit for B < 100 mG (B < 10 mG). Unstable modes grow even at the midplane for B > 100 mG (B ~ 1 mG), but for weaker fields, a small dead region exists. When a population of 0.1 um grains is assumed to be present, perturbations grow at 10 AU for B < 10 mG. We estimate that the figure for R = 1 AU would be of order 400 mG. We conclude that, despite the low magnetic coupling, the magnetic field is dynamically important for a large range of fluid conditions and field strengths in protostellar discs. An example of such magnetic activity is the generation of MRI unstable modes, which are supported at 1 AU for field strengths up to a few gauss. Hall diffusion largely determines the structure and growth rate of these perturbations for all studied radii. At radii of order 1 AU, in particular, it is crucial to incorporate the full conductivity tensor in the analysis of this instability, and more generally, in studies of the dynamics of astrophysical discs.
Latu, Makelesi. « Talanoa : a contribution to the teaching and learning of Tongan Primary School children in New Zealand ». AUT University, 2009. http://hdl.handle.net/10292/919.
Texte intégralKurian, Habel. « A Markov model for web request prediction ». Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/919.
Texte intégralSalazar, James. « Life cycle assessment case study of North American residential windows ». Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/919.
Texte intégralChandler, Christopher N. « Blind injustice : Jesus' prophetic warning against unjust judging (Matt 7:1-5) ». Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/919.
Texte intégralPaasche, Till Frederik. « The governance of security in the revanchist city : the case of Cape Town, South Africa ». Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/919.
Texte intégralYaghfouri, Yassir. « Relational leadership in global multistakeholder groups ». Thesis, Robert Gordon University, 2012. http://hdl.handle.net/10059/919.
Texte intégralHansen, Tessa Louise. « Illegitimacy in the Mid-Victorian Novels of Charles Dickens and Wilkie Collins ». Thesis, University of Canterbury. English, 2006. http://hdl.handle.net/10092/919.
Texte intégralToma, Tahsin Munir. « A model study of negative skin friction on a fixed base pile in soft clay ». Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/919.
Texte intégralKieft, Geke. « Factoren die de werktevredenheid van de vrouwelijke onderwijzer in de primaire school beïnvloeden / door Geke Kieft ». Thesis, North-West University, 2005. http://hdl.handle.net/10394/919.
Texte intégralThesis (M.Ed.)--North-West University, Potchefstroom Campus, 2005.
Kesselman, Andor. « Open Source and Electronic Voting : A New Strategy Toward Technical Procurement for Voting Systems ». Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/cmc_theses/919.
Texte intégralBrooks, Valerie Ann. « In two minds : cognitive and linguistic skills used by children with normal language and a specific impairment of language to understand and resolve ambivalent emotion ». Thesis, University of Newcastle Upon Tyne, 2007. http://hdl.handle.net/10443/919.
Texte intégralYou, Zhen. « New Catalytic Enantioselective Functionalizations of Alcohols through Silylation and Tosylation ». Thesis, Boston College, 2009. http://hdl.handle.net/2345/919.
Texte intégralA survey of silicon-based reactions and potential for Lewis base catalysis was presented. An efficient site- and enantioselective catalytic silylation of triols is disclosed. The protocol is applied to total syntheses of cleroindicins D, F and C. Catalytic kinetic resolution of β-hydroxyketones is disclosed. A readily available amino acid-based catalyst promotes the kinetic resolution with high efficiency. A presentation of catalytic enantioselective tosylation of syn-1,2-diols is disclosed
Thesis (PhD) — Boston College, 2009
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Chemistry
Khaki, Imraan. « Housing in South Africa : the challenge to provide sustainable, integrated, affordable housing ». Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/919.
Texte intégralENGLISH ABSTRACT: Section 26 of the Constitution of South Africa states that all South Africans should have the basic right of access to adequate housing. The task of housing the people of South Africa is the responsibility of the state, who is empowered to utilize all legislative and economic resources at its disposal, in order to achieve this right to housing in all forms. Though the state has mobilised resources and manpower to achieve these objectives, many challenges remain in the facilitation and provision of adequate affordable housing. These challenges relate to the understanding of the complex legislative systems and mechanisms governing the delivery of housing in this country. The functions of various tiers of government and the interventions designed to alleviate the housing backlog are increasingly becoming less effective. The involvement of the private sector in the delivery of sustainable integrated affordable housing is therefore crucial as this enormous challenge cannot be achieved by the government alone. These challenges are numerous and diverse and this study highlights the main structural issues to which both the public and private sectors are exposed to. This relates to availability of land, affordability, subsidy constraints, access to funding and the limitations of development planning. The aim of this study is to determine how this range of challenges is affecting the delivery of sustainable integrated affordable housing. A survey of leading developers in the Western Cape has been conducted to determine the main factors which are retarding and hampering progress. The findings of the study reveals that government interventions in the housing sector though marginally progressive, are not conducive to alleviating the structural problems in this environment. As a result the ability of private sector developers to perform in this market is eroded due to the unsustainable and complex problems associated with this environment. As the need for housing grows, a greater awareness and understanding of the problems and challenges associated with the delivery of sustainable integrated affordable housing is needed to provide a platform for the creation of adequate housing in this country. AFRIKAANSE OPSOMMING: Artikel 26 van die Grondwet van Suid-Afrika stel dat alle Suid-Afrikaners die reg op toegang tot geskikte behuising het. Die taak van die behuising van die mense van Suid-Afrika is die verantwoordelikheid van die staat, wat toegerus is om alle wetgewende en ekonomiese hulpbronne tot sy beskikking te gebruik om hierdie reg tot behuising in al sy vorme te verwesenlik. Alhoewel die staat hulpbronne en mannekrag gemobiliseer het om hierdie doelwitte te bereik, bestaan daar steeds vele uitdagings in die fasilitering en verskaffing van geskikte en bekostigbare behuising. Hierdie uitdagings het betrekking op die begrip van die komplekse wetgewende stelsels en meganismes wat die lewering van behuising in hierdie land beheer. Die funksies van verskeie vlakke van regering en die intervensies wat ontwerp is om die behuisingsagterstand te verlig, raak al hoe minder effektief. Die betrokkenheid van die privaatsektor in die lewering van volhoubare, geïntegreerde en bekostigbare behuising is kritiek omdat die regering nie hierdie enorme uitdaging alleen kan verrig nie. Die uitdagings is talryk en divers, en hierdie studie werp lig op die vernaamste strukturele kwessies waaraan beide die openbare en privaatsektore blootgestel word. Dit het betrekking op die beskikbaarheid van grond, bekostigbaarheid, subsidiebeperkings, toegang tot befondsing en die tekortkominge van ontwikkelingsbeplanning. Die doel van hierdie studie is om vas te stel hoe hierdie reeks uitdagings die lewering van volhoubare, geïntegreerde en bekostigbare behuising affekteer. ’n Opname van toonaangewende ontwikkelaars in die Wes-Kaap is gemaak om vas te stel wat die hooffaktore is wat vordering vertraag en belemmer. Die bevindinge van die studie onthul dat regeringsintervensies in die behuisingsektor, hoewel marginaal progressief, nie bevorderlik is vir die verligting van strukturele probleme in hierdie omgewing nie. Gevolglik word die vermoë van die privaatsektor-ontwikkelaars om in hierdie mark te slaag, verweer weens die onvolhoubaarheid en komplekse probleme wat met hierdie omgewing gepaard gaan. Soos die behoefte aan behuising groei, word ’n groter bewustheid en beter begrip van die probleme en uitdagings, wat gepaard gaan met die lewering van volhoubare, geïntegreerde behuising, benodig om ’n platform daar te stel vir die skepping van geskikte behuising in hierdie land.
Wicker-Wright, Debora D. « Teaching the Writing Process Through Computers As An Early Intervention To Third Graders In A Nine Month Elementary School ». NSUWorks, 1994. http://nsuworks.nova.edu/gscis_etd/919.
Texte intégralDas, Nabakrishna. « The Influence of Individual Factors on Web-based Developmental Education Course Success in a Two-year Technical College ». ScholarWorks@UNO, 2009. http://scholarworks.uno.edu/td/919.
Texte intégralCoram, Shanisha. « The Question of Remilitarization : Is Japan's Pacifist Nature in Danger of Reform ». Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/919.
Texte intégralRodrigues, João Manuel Pereira. « Especificação de um modelo hedónico de preços de habitação para Portugal ». Master's thesis, Instituto Superior de Economia e Gestão, 2008. http://hdl.handle.net/10400.5/919.
Texte intégralA teoria dos preços hedónicos tem aplicação prática no estudo de mercados implícitos, nos quais são transaccionados bens heterogéneos. Estes bens resultam da combinação de um conjunto de bens homogéneos, cujas características são bem identificadas pelos consumidores e produtores, mas para os quais não há um mercado específico, pelo que os consumidores não os podem adquirir isoladamente estando, por isso, limitados à aquisição conjunta de diferentes combinações de atributos, por um preço global. A habitação é um exemplo claro de um bem heterogéneo. No presente trabalho de dissertação, faz-se a aplicação da teoria dos preços hedónicos ao estudo dos preços no mercado da habitação, no território de Portugal continental. Para o efeito recorre-se exclusivamente a informação que, fruto da crescente utilização e divulgação da informática e em particular da Internet, se encontra actualmente disponível em portais especializados do imobiliário. Apresentam-se os resultados e as conclusões que decorrem desta abordagem.
The theory of the hedonic prices has practical application in the study of implicit markets, in which are traded heterogenous goods. These goods are the result from the combination of homogenous goods, whose attributes are well identified by the consumers and producers, but for which there is not a specific market, therefore the consumers cannot acquire them separately, being, by that, limited to the combined acquisition of bundles of characteristics, for a global price. Housing is a clear example of a heterogenous good. In the present work of dissertation, the theory of the hedonic prices is applied to the study of the prices in the housing market, in the territory of Portugal continental. For this purpose, as result of the growing utilization and disclosure of data processing and in specific of the Internet, information currently available in web sites specialized in real estate is used. The results and the conclusions that elapse from this approach are presented.
Silva, Fernando. « Análise do clima e cultura organizacional no Banco Comercial Português ». Master's thesis, Instituto Superior de Psicologia Aplicada, 1996. http://hdl.handle.net/10400.12/919.
Texte intégralFernandes, Marta Helena Teixeira. « Tuberculose nosocomial ». Master's thesis, Universidade da Beira Interior, 2009. http://hdl.handle.net/10400.6/919.
Texte intégralThe nosocomial tuberculosis, defined as tuberculosis infection gained by patients or occupational health care, in a health care institution resulting from care of patients is, now a day an important problem. The alterations on the presentation not only because de patient is now a day more impaired but also by the co-existence of the human immunodeficiency virus, make the diagnosis harder and, so, make the transmission easier. The health care workers risk depends normally the same factors than the patients in hospital environment, being increased by the frequency, duration, intensity of the exposition and related with the functions and place of work. As Portugal remains with the highest rates of tuberculosis in European Union, our health care workers also are in higher risk. To better prevent the hospital infection, the “center for disease control and prevention” published in 1990 the first guidelines, that was strengthen in 1993/1994 by “occupational safety and health administration”. In Portugal the existent guidelines are based in those guidelines named “Recomendações para a prevenção da tuberculose nos serviços de saúde”. Unfortunately this guidelines aren’t always obeyed, not only because the lack of conditions of the hospitals but also because the health care workers aren’t sensitized neither informed to the importance of respect this guidelines. So, It is important review the existent guidelines, to know what has been done in our country and in our hospital and to understand the points that can be improved and where we should intervene.
Ribeiro, Maria Isabel. « Construção de um modelo da procura para o ensino superior agrário em Portugal ». Doctoral thesis, Universidade de Trás-os-Montes e Alto Douro, 2005. http://hdl.handle.net/10198/919.
Texte intégralThe construction of an agrarian higher education demand model is the main objective of this work. To pursuit this objective, the students in the agrarian courses or other similar areas were inquired. These students enrolled for the first time, in the first year, during 2003/2004, in the higher education system. The first five chapters of this work intend to contextualize the agrarian higher education. Therefore, it is made reference to the origin and evolution, related aspects concerning the demand and supply during 1992-2003. In addition, the literature revision approaches the higher education demand models at international and national level. In the chapter VII a descriptive analyses of the data was conducted. The result of such analysis allows characterizing the population in study. Given the dual nature of the Portuguese higher education system, the analysis included the study of each sub-system, namely, the university system and the polytechnic system. In the chapter VIII, the results of data treatment are presented and analyzed. The data treatment used statistical techniques, namely, bivariate analysis, factorial analysis and the application of logit model of binary choice. Finally, in chapter VIII is made reference to main conclusions found during analysis results, and to future investigation lines. Data treatment included several statistical tests and the estimation of a logit model of binary choice. Regarding the decision choice about the education type (university or polytechnic), the estimation results identified as determinant factors: personal factors like age, culture and values; academic performance factors, namely, access note, reasons to the higher education application, and attitudes about work and study; contextual factors, particularly, the individual lives with they parents, the institution reputation, the existence of larger supply, and the major probability of entering in the degree course; and, finally, social and economics factors as income level. On the other hand, results on decision choice about degree course/institution identified some determinant factors, namely, contextual factors like major probability of entering in the degree course, and the degree course generic training; personal factors related with ownership information in the application moment; performance factors, namely, access note and application figures to higher education and; finally, academic factors as the opinion that “The higher education institutions are local of learning and of knowing”.
Alvarez, Salazar Evelyn Katy. « Estudio comparativo de la actividad moduladora del extracto metanólico de cuatro ecotipos de Lepidium peruvianum Chacón (maca) sobre la respuesta inmune humoral y celular en ratones ». Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2008. https://hdl.handle.net/20.500.12672/919.
Texte intégral--- Lepidium peruvianum (maca) is a traditional crop in the Central Andes from Peru, it is well-known and employee from pre-Columbian times as a medicinal and nutritional plant. Maca is presented in different ecotypes according to colors of its roots. Previous studies reported that the different ecotypes from maca display differences in their biological activity. The objectives of the present study were: To determine flavonoids, calcium and iron concentration in methanolic extract (EM) of white, purple, red and black ecotypes, to verify the modulatory activity of the methanolic extract of the white, purple, red and black ecotypes on the humoral immune response in mice to sheep red blood cells (SRBC) in normal and inmunosuppressed animals with cyclophosphamide (CP), as well as its effect on the weight and cellularity of the lynphoid organs and peripheral blood cell count. Finally to evaluate the activity of the methanolic extracts of the selected ecotypes on the nitric oxide (NO) production by peritoneal macrophages.
Tesis
Erdogan, Innocentia Gugulethu. « Treatment of softdrink industry wastewater using an integrated anaerobic/aerobic membrane bioreactor ». Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/919.
Texte intégralMost softdrink industries in developing countries are moving towards wastewater reuse or recycling. Water and wastewater reutilization, costs of treatment and disposal guidelines, remain the most critical factors for the development of sustainable water use for softdrink industries. Wastewater reuse or recycle has potential in the softdrink industry, depending on the wastewater characteristics’ concentration and volume. During this study, an integrated laboratory scale anaerobic/aerobic sidestream membrane bioreactor (MBR) system was used for treating softdrink industry wastewater (SDIW). The aim was to evaluate the system’s performance, and identify potential opportunities to recycle the water, and therefore reduce freshwater intake and minimise wastewater production. The objectives were to: evaluate: 1) treatment efficiencies for the individual stages; 2) biogas production in the anaerobic stage; and 3) the overall performance of the integrated system under different operating conditions. The SDIW used in this study was classified as medium to high strength wastewater with a total chemical oxygen demand (CODt) ranging between 2 242 and 11 717 mg/L and a biological oxygen demand (BOD) of up to 1 150 mg/L. The major pollutants in the SDIW were caustic soda; dissolved sugars, namely fructose (1 071 mg/L) and sucrose (6 900 mg/L); with the pH ranging between 6.1 and 12. The SDIW was characterized by total suspended solids (TSS) of 66 mg/L, as well as fats, oils and greases (FOG) of 40 mg/L. The maximum turbidity and colour was 65.3 NTU and 42 mg Pt/L, respectively. All the physiochemical properties and inorganic parameters were within the within the City of Cape Town’s (CCT’s) industrial wastewater quality discharge standards by-law (South Africa, 2006). Excluding the total dissolved solids (TDS) and electrical conductivity (EC) with maximum values were 1 050 mg/L and 1 483 μS/cm, respectively. Anaerobic pre-treatment of this SDIW was studied using a laboratory-scale expanded granular sludge bed (EGSB) reactor maintained at mesophilic temperature of between 35 to 37˚C. An organic loading rate (OLR), upflow velocity (Vup) and hydraulic retention time (HRT) of 10.9 kg COD/m3d, 0.85 m/h and ~11.8 h, respectively, resulting in COD treatment efficiencies of up to 93% CODt. An increase in nitrate (NO3-) in the EGSB product stream was an indication of an anaerobic ammonium (NH4+) oxidation (ANAMMOX) process. Anaerobic digestion (AD) of SDIW in the EGSB resulted in biogas production with methane (CH4), carbon dioxide (CO2), nitrogen (N2), and oxygen (O2), concentrations of up to 70%, 11%, 14.8%, and 4.1%, respectively. At the OLR and Vup of 10.9 kg COD/m3d and 0.85 m/h, respectively, the EGSB produced 16.7 L/d of biogas. The EGSB anaerobic pre-treatment resulted in stable treatment efficiencies for the removal of organic constituents, as well as biogas production without adding an external carbon source. The MBR post-treatment satisfactorily operated at a feed flowrate of up to 33.7 L/d, OLR of 2.3 and 3.1 kg COD/m3d for the anoxic and aerobic zones, respectively, and an HRT of approximately 0.41 h for both zones. The average CODt removal achieved was 86%. The dissolved oxygen (DO) concentration of 2.1 mg/L in the anoxic zone combined with an aeration rate and DO concentration of 11.8 L/min and 5.7 mg/L, in the aerobic zone resulted in NH4+; NO3-; and orthophosphate (PO43-), removal rates up to 90%; 55% and 39%, respectively. However, the MBR post-treatment did not decrease the orthophosphate concentration to within the SANS 241:2011 drinking water standards. The integrated EGSB-MBR treatment for SDIW was able to achieve an overall CODt removal efficiency of up to 94%. Although the MBR performance was successful the EC, TDS, PO43-, and colour concentrations in the ultrafiltration (UF) permeate did not meet the CCT’s industrial wastewater standards by-law (2006) as well as the SANS’ drinking water standards 241:2011 and required further treatment for reuse.
Brown, Elizabeth. « Ambitious Young Woman ». Digital Commons at Loyola Marymount University and Loyola Law School, 2020. https://digitalcommons.lmu.edu/etd/919.
Texte intégralCabral, Ana Maria Pina. « Descritores biológicos num gradiente de enriquecimento orgânico ». Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/919.
Texte intégralEste estudo teve como objectivo avaliar os efeitos do efluente de origem doméstica eliminado através do emissário submarino da Guia no ambiente marinho receptor. Foram recolhidas, em Julho de 2005, amostras em três locais (L1, L2 e L3) na vizinhança do emissário submarino, para a caracterização físico-química dos sedimentos e para o estudo da estrutura da comunidade macrobentónica. L1 localiza-se entre os dois ramos do emissário perto da área de difusão do efluente, enquanto que L2 e L3 distam daquele em 2 e 3 km, respectivamente. Verificou-se que os sedimentos superficiais da área de estudo são de areia fina com um baixo conteúdo em finos e sem sinais de ocorrer a acumulação de sólidos voláteis totais na zona de difusão dos efluentes. O valor mais baixo de Eh (-28mV) foi determinado no local de amostragem mais próximo dos difusores (L1). Na caracterização da macrofauna bentónica foram recolhidas, no conjunto dos três locais de amostragem, 122 espécies e cerca de 5800 indivíduos que apresentaram uma biomassa total de cerca de 220g. Verificou-se que a abundância e a biomassa decresceram com a distância ao emissário enquanto que a riqueza em espécies e o índice de diversidade de Shannon- Wiener aumentaram neste sentido. Em L1 dominaram em termos de abundância e de biomassa espécies oportunistas (Capitella spp. e Nassarius reticulatus, respectivamente) que contribuíram em mais de 70% para a abundância e em mais de 48% para a biomassa daquele local. A abundância destas espécies diminuiu com a distância ao emissário sendo em L3 o complexo Capitella spp. substituído por Hyalinoecia bileneata considerada uma espécie típica daquela zona costeira. Também as curvas de dominância da abundância e da biomassa (curvas ABC) sugerem a presença de uma comunidade macrobentónica moderadamente perturbada em L1 diminuindo a evidência da perturbação à medida que a distância ao emissário aumenta. Estes resultados suportam a hipótese de que a perturbação desta comunidade se deve ao enriquecimento orgânico associado ao funcionamento do emissário submarino. Nos mesmos locais de amostragem eterminaram-se os níveis de imposex em Nassarius reticulatus. Não se observaram diferenças significativas entre os valores de comprimento de pénis (FPL) e de comprimento relativo de pénis (RPLI) nos três locais de amostragem, os quais variaram entre 0,093 e 0,124 e, entre 0,871 e 1,202, respectivamente. No entanto, verificou-se que o índice de sequência do vaso deferente (VDSI) e a percentagem de fêmeas afectadas por imposex % I aumentaram significativamente com a distância ao emissário (ANOVA: F= 34.9; P <0.001 para VDSI; F= 40,4; P <0,001 para % I). O VDSI variou entre 0,418 e 0,842 enquanto que a % I variou entre 40,53 e 70,25%. Colocou-se a hipótese de que o gradiente de intensidade de imposex acima descrito se poderia dever à acção de compostos estrogénicos eventualmente presentes no efluente. Para testar esta hipótese realizaram-se ensaios laboratoriais para avaliar o efeito de uma mistura de compostos com actividade estrogénica (MCAE), geralmente presentes em águas residuais domésticas, no desenvolvimento de imposex. Para tal, expuseram-se fêmeas de N. reticulatus a tributilestanho (TBT) e a TBT (250 ng Sn-TBT/L) com concentrações crescentes de MCAE (composta por 17 β-estradiol, 17α- etinilestradiol, estrona e nonilfenol). Verificou-se, conforme esperado, que o TBT induz o desenvolvimento de imposex em todos os tratamentos em que foi introduzido mas não houve alterações significativas nos níveis daquele parâmetro na presença de MCAE, indicando que aqueles compostos estrogénicos, nas condições experimentais utilizadas, não interferem no desenvolvimento de imposex. ABSTRACT: This study aims to assess the effects of screened but untreated sewage from a major city, discharged to the marine environment via an offshore outfall (Guia). In July 2005, samples from three sites (L1, L2 and L3) were taken for the sediment physical and chemical characteristics study and for the benthic community structure study. L1 is located between the branches of the outfall in the discharge area, and L2 and L3 are, respectivelly, 2 and 3 km distant from L1. The superficial sediments in the study area were composed of fine sand with a low content of particles with less than 63 μm and without signs of volatile solids accumulation close to the outfall. The lowest Eh value (-28mV) was observed at the vicinity of the diffusers (L1). A total of 122 species, representing around 5800 specimens with a total wet weight biomass of 220g, were identified in the three sites. It was observed that abundance and biomass decreased with the distance to the outfall while species richness and Shannon-Wiener diversity index increased. Opportunist species dominated in abundance (Capitela spp.) and biomass (Nassarius reticulatus) in L1, contributing to more than 70% of the total abundance and to more than 48% of the total biomass, respectively. The abundance of those taxa decreased with the distance to the outfall being the complex Capitella spp. absent at L3 site and replaced by Hyalinoecia bilineata. The Abundance/Biomass comparison (ABC) curves also indicate that the macrobenthic community was moderately disturbed in L1. The results support the hypothesis of community disturbance due to organic enrichment related to the operation of the outfall. Imposex was asssessed in Nassarius reticulatus populations in the same sampling sites. There were no significant differences in female penis length (FPL) and relative penis length index (RPLI), which varied between 0,093 and 0,124 and, between 0,871 and 1,202, respectively. However, the vas deferens sequence index (VDSI) and the percentage of females affected with imposex (% I) increased sinificantly with the distance to the outfall (ANOVA: F= 34.9; P <0.001 for VDSI; F= 40,4; P <0,001 for % I): the VDSI ranged from 0,418 to 0,842 and % I varied from 40,53 to 70,25%. In an attempt to evaluate if a mixture of estrogenic active chemicals (MCAE), at environmentally relevant concentrations, could cause a reduction of imposex development under laboratory conditions, we have tested if exposure to a mixture of 17 β-estradiol, 17α- ethinylestradiol, estrone and nonylphenol could ameliorated the severity of imposex induced by tributyltin (TBT) in Nassarius reticulatus. After 30 days of exposure, results demonstrated a significant increase in FPL in all treatments where TBT (250 ng Sn-TBT/L) was present. However, the addition of MCAE to TBT had no significant effects on the development of imposex suggesting that these estrogenic compounds may have no influence on imposex expression in this specie.
Wei, Junqing. « Autonomous Vehicle Social Behavior for Highway Driving ». Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/919.
Texte intégralZhang, Xiaojun. « Analgesic effect of paeoniflorin in rats with visceral hyperalgesia induced by neonatal maternal separation ». HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/919.
Texte intégralSalmeron, Raquel. « Magnetorotational Instability in Protostellar Discs ». Thesis, The University of Sydney, 2004. http://hdl.handle.net/2123/919.
Texte intégralFischer, Mary Margaret. « EVALUATION OF GROWING MEDIA FOR ANNUAL HERB PRODUCTION IN GREEN ROOF MODULAR TRAYS ». OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/919.
Texte intégralHauser, Patricia Margaret. « AN EXAMINATION OF FACTORS THAT PREDICT STUDENT RETENTION AMONG AGRICULTURAL MAJORS : A LONGITUDINAL STUDY ». OpenSIUC, 2014. https://opensiuc.lib.siu.edu/dissertations/919.
Texte intégralHuang, Henry. « Exploring New Therapeutic Strategies for Osteoarthritis : From Genetic Manipulation of Skeletal Tissues to Chemically-modified Synthetic Hydrogels ». eScholarship@UMMS, 2017. https://escholarship.umassmed.edu/gsbs_diss/919.
Texte intégralAndes, Derek. « Orbital oscillations ». Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/919.
Texte intégralBarker, J. Burdette. « Estimation of Field Alfalfa Evapotranspiration in a Windy, Arid Environment ». DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/919.
Texte intégralWeitemier, Kevin Allen. « Phylogeographic Patterns and Intervarietal Relationships within Lupinus lepidus : Morphological Differences, Genetic Similarities ». PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/919.
Texte intégralNguyen, Ngoc Lan. « EFFECTIVE EVIDENCE-BASED STRATEGIES TO MINIMIZE SELF-INJURIOUS BEHAVIORS IN YOUNG CHILDREN WITH AUTISM SPECTRUM DISORDERS : A PRACTICAL MANUAL FOR EDUCATORS ». CSUSB ScholarWorks, 2019. https://scholarworks.lib.csusb.edu/etd/919.
Texte intégralBillings, Shasta Le'ja. « Cloth Filter for Disaster Relief Water Treatment ». DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/919.
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