This paper reports a simple self-assembly strategy towards bowl-shaped carbon-containing hollow particles, as well as an unprecedented potential application for block copolymer vesicles in energy storage. Kippah vesicles (fully collapsed vesicles), formed by solution self-assembly of an amphiphilic polystyrene-block-poly(ethylene oxide) block copolymer, were employed as the template to guide the formation of bowl-shaped nitrogen-doped carbon hollow particles (BNCHPs). As electrode materials of supercapacitors, BNCHPs exhibit superior electrochemical performance. In particular, compared with their spherical counterpart, BNCHPs largely increase their volumetric packing density, leading to much higher volumetric capacitance or volume reduction of electrodes, which is desired for practical supercapacitor devices.

Understatements for two-channel fixed media is a four-movement study of the sonic potential of acoustic instruments within the practice of electroacoustic studio composition. The musical identity of the entire composition is achieved through consistent approaches to disparate instrumental materials and a focused investigation of the relationships between the various acoustic timbres and their electroacoustic treatments. The analytical section of this paper builds on contemporary research in electroacoustic arts. The analysis of the work is preceded by a summary of theoretical and aesthetic approaches within electroacoustic composition and the introduction of primary criteria of sonic faktura (material essence) used in the compositional process. The analyses address the idiosyncratic use of the concept of faktura to contextualize and guide the unfolding of the work. The reconciliation of the illusory electronic textures and the acoustic sources that parented them may be considered the ultimate goal of Understatements.

No description available.

This thesis utilizes three theoretical approaches; political ecology, settler culture and community conservation to examine soil conservation and the white agrarian environment in colonial Zimbabwe to evaluate to what extent players in government and the agricultural sector were conscious or concerned about preservation and conservation of the soil. The thesis also examines the role of local and international ideas in the colony’s conservationist tradition, and whether the soil conservation movement was identity-forming among the colony’s settler farmers. The history of conservation on settler farms in colonial Zimbabwe can be periodized into three broad timeframes - from the 1890s to around the mid-1930s, between 1934 and 1965 and the Unilateral Declaration of Independence (UDI) period. In the first three and half decades of the 20th century the history of conservation can best be described as being characterized by a series of “dilemmas.” The British South Africa Company (BSA Co.) administration did not pursue soil conservation in any significant, synchronized or sustained manner. In the second period, from 1934 to 1965, there was considerable progress in the construction of conservation works on settler farms. This process was the result of recommendations made by Natural Resources Commission, a body that was appointed in 1938 to investigate the status of the colony’s natural resources. The mid-1940s were characterized by the formation of Intensive Conservation Areas (ICAs) in settler farming districts whose mandate was to oversee the construction of conservation works to rehabilitate settler farms. With the support of the Natural Resources Board (NRB), and the Department of Conservation and Extension (CONEX), formed in 1948 to provide expertise on conservation-related matters and extension support, all settler farming areas were covered by trained CONEX staff, though in most instances very thinly distributed due to high demand for their service and manpower constraints in the department. The third period, the UDI era, was characterized by attempts by the minority settler government to forestall majority rule in the colony. Malawi and Zambia (formerly Nyasaland and Northern Rhodesia, respectively) had been granted their independence by Britain in 1964. As decolonization was taking place in other parts of Africa, black majority rule in colonial Zimbabwe also seemed imminent. To the alarm of the white minority government, Britain had set out to grant majority rule to its African colonies, including Southern Rhodesia (renamed Rhodesia after Zambia’s independence). The Ian Smith-led government of Rhodesia, feeling betrayed, declared UDI on 11 November 1965, delaying Zimbabwean independence by another 15 years. With the end of the Federation in 1963, the colony could no longer rely on federal resources as it had done between 1953 and 1963. Sanctions, imposed in reaction to UDI, further put the regime in a tight corner. Their impact was quite significant. Fuel had to be rationed, and general belt-tightening across the board inevitably followed as major Rhodesian exports such as tobacco and minerals were embargoed on international markets. The start of the liberation war at the end of the 1960s further complicated matters. / Thesis (DPhil)--University of Pretoria, 2013. / gm2014 / Historical and Heritage Studies / Unrestricted

Die Besiedlung des kindlichen Darms beginnt unmittelbar mit der Geburt. Hier findet der erste Kontakt mit verschiedensten Bakterien statt. Deshalb war die zentrale Fragestellung unserer Untersuchung, wie sich die Bakterienarten bei den Geburtsmodi unterscheiden und wie sich die bakterielle Zusammensetzung im Stuhl von Neugeborenen im Laufe der Jahre verändert hat. Wir untersuchten die Stuhlproben von 42 Neugeborenen, wovon 22 vaginal und 20 per Sectio entbunden wurden, am ersten, zweiten und dritten Lebenstag auf Bakterienwachstum. Es wurden die aufgetretenen Bakteriengattungen mittels Kultur bestimmt und von den aufgetretenen Staphylokokken und Enterokokken die Arten und deren Resistenzen mittels des Phönix-Vollautomaten untersucht. Wir konnten zeigen, dass im Gegensatz zu früheren Untersuchungen heutzutage vermehrt Staphylokokken den Darm von Neugeborenen besiedeln. Außerdem fiel auf, dass per Sectio entbundene Kinder eine verminderte Heterogenität in ihrer Stuhlflora haben und erst später besiedelt werden als vaginal entbundene Kinder.

La question de recherche à la base de cette étude soulève le point de la nature paradoxale du canon de représentation égyptien qui démontre, simultanément, une certaine rigidité dans l’application de règles stylistiques et iconographiques établies, particulièrement dans l’art non commandité par l’État, et des preuves de transformation et d’intégration de motifs nouveaux. Partant de cette problématique, l’étude vise à identifier les mécanismes par lesquels ce canon permet, à la fois, l’innovation et le maintien d’une certaine tradition. L’approche est de nature double et consiste tout d’abord à identifier de grandes tendances et discontinuités stylistiques et iconographiques sur les bols de faïence du Moyen au Nouvel Empire. De plus, elle tente de déterminer si les transformations d’ordre sociopolitique et idéologique, survenant à ces périodes, peuvent être lues dans les variations stylistiques et iconographiques trouvées sur les bols de faïence. Après une description du champ conceptuel de la « représentation » en contexte égyptien, l’auteur effectue l’analyse iconographique exhaustive de ce qui constitue l’apport majeur de son étude, un corpus de 500 bols et fragments de faïence provenant de divers sites égyptiens du Moyen au Nouvel Empire. Les données ont été traitées par le biais de la méthode d’analyse iconologique proposée par Panofsky, qui lui permet de dévoiler un grand nombre de continuités et de transformations d’ordre stylistique et iconographique pour les différentes périodes. Plusieurs facteurs semblent avoir été à l’origine de ces transformations, dont la fluctuation entre un contexte de centralisation et de décentralisation politique de l’État, ainsi que l’intégration de motifs étrangers (proche-orientaux et égéens) résultant d’un contact accru entre l’Égypte et les régions voisines. De plus, les transformations idéologiques apportées par le règne d’Akhénaton et par la « contre-réforme » idéologique à la période ramesside, semblent avoir également contribué à des innovations au sein du canon, même si ce dernier maintient une certaine continuité légitimée par le pouvoir étatique. Le canon de représentation, devient ainsi une forme de langage dont l’État se sert et qui, parfois malgré lui, se transforme et fluctue selon les réalités des différentes périodes. / This study’s research question raises the issue of the paradoxical nature of the Egyptian canon of representation which shows, simultaneously, a certain rigidity in the application of established stylistic and iconographic rules, especially in non-state commissioned art, and evidence for the transformation and integration of new iconographical motifs. The study aims to identify the mechanisms by which the canon permits, at the same time, transformative processes and the maintenance of tradition. The approach is twofold and consists primarily in identifying trends and stylistic/iconographical discontinuities in the iconography found on the faience bowls from the Middle to the New Kingdoms. Furthermore, it aims to determine if the socio-political and ideological transformations taking place in these periods can be discerned in the stylistic and iconographical variations found on the bowls of the Middle to the New Kingdoms. The author discusses the theoretical model of “representation” in Egyptian context, followed by an analysis of what constitutes the major contribution of this study: an exhaustive iconographical analysis of 500 faience bowls and fragments originating from various Egyptian sites dating to the New Kingdom. The data was evaluated by means of the method of iconological analysis proposed by Panofsky, which permits the identification of a number of stylistic and iconographic continuities and changes for all periods. These transformations seem to be the result of a variety of factors, including fluctuations in the centralization and decentralization of the state, as well as the integration of foreign motifs (Near-Eastern and Aegean), which results from increased contacts between Egypt and its neighbouring regions. Furthermore, the ideological transformations taking place under Akhenaton’s reign and the ones resulting from the ideological “counter-reformation” occurring during the Ramessid period, equally seem to contribute to the changes in the representational canon, even though the latter maintained a certain continuity that was legitimized by the state. The canon thus emerges as a form of language used by the state, and sometimes despite it, which can fluctuate and be altered depending on the realities of the different periods.

This thesis focuses on the theme of the journey and the changes that occur in the socio-historical context of the Great Depression as well as in John Steinbeck's The Grapes of Wrath. The thesis is an expository piece on road literature, its features and how the chosen novel has earned its rightful place in the American oeuvre, specifically that of road literature. The thesis is separated into two major parts. The former part provides the reader with a socio- historical context of the Great Depression as well as a background on the historical patterns of the 'journey' in America and how these two aspects are interrelated in the context of this thesis. The latter part constitutes the analysis of John Steinbeck's The Grapes of Wrath by including the authorial relationship to the novel and the many aspects of the novel as studied through the scope of road literature. This part is further expanded by a close-up analysis of the changes in identity of characters in The Grapes of Wrath. The primary focus is on the notion of change and how it is connected to the notion of the road, including how the human being stands between these notions and is transformed in the process. Keywords: change, mobility, flight, escape, John Steinbeck, The Grapes of Wrath, American Dream, hope, depression, 1930s, Great...

La question de recherche à la base de cette étude soulève le point de la nature paradoxale du canon de représentation égyptien qui démontre, simultanément, une certaine rigidité dans l’application de règles stylistiques et iconographiques établies, particulièrement dans l’art non commandité par l’État, et des preuves de transformation et d’intégration de motifs nouveaux. Partant de cette problématique, l’étude vise à identifier les mécanismes par lesquels ce canon permet, à la fois, l’innovation et le maintien d’une certaine tradition. L’approche est de nature double et consiste tout d’abord à identifier de grandes tendances et discontinuités stylistiques et iconographiques sur les bols de faïence du Moyen au Nouvel Empire. De plus, elle tente de déterminer si les transformations d’ordre sociopolitique et idéologique, survenant à ces périodes, peuvent être lues dans les variations stylistiques et iconographiques trouvées sur les bols de faïence. Après une description du champ conceptuel de la « représentation » en contexte égyptien, l’auteur effectue l’analyse iconographique exhaustive de ce qui constitue l’apport majeur de son étude, un corpus de 500 bols et fragments de faïence provenant de divers sites égyptiens du Moyen au Nouvel Empire. Les données ont été traitées par le biais de la méthode d’analyse iconologique proposée par Panofsky, qui lui permet de dévoiler un grand nombre de continuités et de transformations d’ordre stylistique et iconographique pour les différentes périodes. Plusieurs facteurs semblent avoir été à l’origine de ces transformations, dont la fluctuation entre un contexte de centralisation et de décentralisation politique de l’État, ainsi que l’intégration de motifs étrangers (proche-orientaux et égéens) résultant d’un contact accru entre l’Égypte et les régions voisines. De plus, les transformations idéologiques apportées par le règne d’Akhénaton et par la « contre-réforme » idéologique à la période ramesside, semblent avoir également contribué à des innovations au sein du canon, même si ce dernier maintient une certaine continuité légitimée par le pouvoir étatique. Le canon de représentation, devient ainsi une forme de langage dont l’État se sert et qui, parfois malgré lui, se transforme et fluctue selon les réalités des différentes périodes. / This study’s research question raises the issue of the paradoxical nature of the Egyptian canon of representation which shows, simultaneously, a certain rigidity in the application of established stylistic and iconographic rules, especially in non-state commissioned art, and evidence for the transformation and integration of new iconographical motifs. The study aims to identify the mechanisms by which the canon permits, at the same time, transformative processes and the maintenance of tradition. The approach is twofold and consists primarily in identifying trends and stylistic/iconographical discontinuities in the iconography found on the faience bowls from the Middle to the New Kingdoms. Furthermore, it aims to determine if the socio-political and ideological transformations taking place in these periods can be discerned in the stylistic and iconographical variations found on the bowls of the Middle to the New Kingdoms. The author discusses the theoretical model of “representation” in Egyptian context, followed by an analysis of what constitutes the major contribution of this study: an exhaustive iconographical analysis of 500 faience bowls and fragments originating from various Egyptian sites dating to the New Kingdom. The data was evaluated by means of the method of iconological analysis proposed by Panofsky, which permits the identification of a number of stylistic and iconographic continuities and changes for all periods. These transformations seem to be the result of a variety of factors, including fluctuations in the centralization and decentralization of the state, as well as the integration of foreign motifs (Near-Eastern and Aegean), which results from increased contacts between Egypt and its neighbouring regions. Furthermore, the ideological transformations taking place under Akhenaton’s reign and the ones resulting from the ideological “counter-reformation” occurring during the Ramessid period, equally seem to contribute to the changes in the representational canon, even though the latter maintained a certain continuity that was legitimized by the state. The canon thus emerges as a form of language used by the state, and sometimes despite it, which can fluctuate and be altered depending on the realities of the different periods.

Made available in DSpace on 2017-07-10T18:08:05Z (GMT). No. of bitstreams: 1 Diani Fernanda da Silva.pdf: 4308607 bytes, checksum: 15e7dca78e64eb979242f6e5eb152b6a (MD5) Previous issue date: 2014-02-14 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The use absence of domestic systems for wastewater treatment promotes the frequent cases of soil and water resources contamination, and contributes to the spread of diseases in the population. Within this context, the work aimed the development/proposition a methodology and alternative technology for treatment domestic sewage of residences located in rural area, specifically for the treatment of effluents generated in the kitchen sink and the toilet bowl. For this, was performed the domestic effluents source characterization through the management diagnostic of domestic wastewater in Paraná state and the city of Toledo; domestic effluents qualitative (physical, chemical and biological parameters) and quantitative (daily and monthly volume) characterization; performance evaluation of the conventional methods, processes and technologies for treatment of rural areas domestic sewage; the method and the technology design/developing for the rural domestic sewage treatment from the toilet bowl and kitchen sink; the construction, operation and monitoring of alternative technology; and the agreement analysis. From the results obtained in the first step, it was found that in Paraná state rural areas are generated over 261 thousand m³ day-1 of domestic sewage, in the city of Toledo rural area are produced 37,410.8 m3 of domestic effluent monthly. In the evaluation step of treatment methods and technologies it was verified the existence of technical limitations and bottlenecks in the equipment, prevailing the low treatment efficiency. Based on detailed studies of the physical, chemical and biological fundamentals and testing bench, was developed the project of alternative technology containing a feces and urine separator; a helical anaerobic bioreactor with tubular shape for the feces. The technology alternative prototype operation showed satisfactory results with respect the feces and urine separation and the feces stabilization in the reactor was completed in just 30 days of treatment forming a residual without the E. coli presence (<1 NMP g-1). / A ausência no uso de sistemas de tratamento de efluentes domésticos na área rural promove frequentes casos de contaminação do solo e dos recursos hídricos, bem como contribui com a disseminação de doenças entre a população. Nesse contexto, o objetivo do trabalho foi o desenvolvimento/proposição de uma tecnologia alternativa para o tratamento dos efluentes gerados no vaso sanitário e na pia da cozinha de residências da área rural. Para isso, realizou-se a caracterização da fonte geradora de efluentes domésticos por meio do diagnóstico da gestão dos efluentes doméstico no estado do Paraná e no município de Toledo; a caracterização quantitativa (volume diário e mensal) e qualitativa (parâmetros físicos, químicos e biológicos) dos efluentes domésticos; a avaliação do desempenho dos métodos, processos e tecnologias convencionais para o tratamento de efluentes domésticos das áreas rurais; o projeto/desenvolvimento do método e da tecnologia alternativa para o tratamento dos efluentes domésticos rurais provenientes do vaso sanitário e da pia da cozinha; a construção, operação e monitoramento da tecnologia alternativa; e a análise de concordância. A partir dos resultados obtidos na primeira etapa, constatou-se que nas áreas rurais do estado do Paraná são gerados mais de 261 mil m³. dia-1 de efluentes domésticos, na área rural da cidade de Toledo são produzidos 37410,8 m3 de esgoto domestico mensalmente. Na etapa de avaliação dos métodos e tecnologias de tratamento, constatou-se a existência de limitações e gargalos técnicos nos equipamentos, prevalecendo à baixa eficiência no tratamento. Com base em estudos detalhados dos fundamentos físicos, químicos e biológicos e dos testes de bancada, foi desenvolvido o projeto da tecnologia alternativa contendo um separador de fezes e urina, um biorreator anaeróbico helicoidal de formato tubular para o tratamento das fezes. A operação do protótipo da tecnologia alternativa apresentou resultados satisfatórios quanto a segregação das fezes e da urina e a estabilização dos dejetos no reator foi completa em apenas 30 dias de tratamento originando um composto sem a presença de E. coli (<1 NMP g-1).

This paper reports a simple self-assembly strategy towards bowl-shaped carbon-containing hollow particles, as well as an unprecedented potential application for block copolymer vesicles in energy storage. Kippah vesicles (fully collapsed vesicles), formed by solution self-assembly of an amphiphilic polystyrene-block-poly(ethylene oxide) block copolymer, were employed as the template to guide the formation of bowl-shaped nitrogen-doped carbon hollow particles (BNCHPs). As electrode materials of supercapacitors, BNCHPs exhibit superior electrochemical performance. In particular, compared with their spherical counterpart, BNCHPs largely increase their volumetric packing density, leading to much higher volumetric capacitance or volume reduction of electrodes, which is desired for practical supercapacitor devices.