Jana Vrchovecká: From the sensual experience to the transcendental one The tradition of sensualism or vitalism is rarely represented in the French literature. During the twentieth century several authors tried to revive this tendency. The first apologist was André Gide, whose work Les Nourritures terrestres (1893) was considered as a doctrine of the sensual attitude, and for its spiritual overlap it was even called The New evangel. The deification of the material aspect of the reality becomes the link with the last holder of the Nobel Literature Prize: Jean-Marie Gustave Le Clézio. In his early essay: L'Extase matérielle (1968) he also exalts the sensual experience as the base of the transcendental one. The first part of the work compares the authors' sensual attitude in the mentioned works by the analyse of the particular senses. The synchronic participation of all them should provoke the second state of consciousness whose first grade is the ecstasy and the most desired one is the prophetic mind. The second part analyses the factors that contribute to this double objective. The necessary condition is the anchoring in the present moment. Both the authors worship the cult of the Sun which substitutes the traditional notion of the God. However, the individual must also cut out the bonds that impede...

As Shakespeare composed the three history plays discussed here, English culture faced a shift in its dominant belief system from an animistic perspective that valued nature and superstition to a humanistic perspective based on reason and personal relationships. In Richard II, Shakespeare creates characters that fall on either side of this divide, and he shows humanism triumph over animism when Henry deposes Richard. In 1 Henry IV, Shakespeare shows that this binary is not so easily reconciled, and Hal (the future Henry V) creates a dual nature that subsumes the tenets of both animism and humanism. After the death of his father and his rejection of Falstaff in 2 Henry IV, Hal demonstrates that the only solution to the humanism/animism debate is to entirely reject the tenets of both and, instead, blend the two viewpoints together. The result is a newly formed conception of kingship and a hero-king.

Nearly all discussions of Hemingway and his work touch on the theme of masculinity, a recurrent theme in all of his works. Examinations of Hemingway and his relationship to masculinity have almost unanimously treated the author as a misogynist and a champion of violent masculinity. However, since the posthumous publication of The Garden of Eden in 1986, there has been much discussion of Hemingway’s uncharacteristic use of androgynous characters in the novel. Critics have taken this as a clue that Hemingway possessed a complex attitude regarding gender fluidity, but have failed to examine the constructions of gender and identity in his earlier fiction. By examining two of his earliest works, In Our Time (1925) and The Sun Also Rises (1926), I argue that Hemingway’s complex ideas about gender performance have been hidden just beneath the surface all along.

Thesis presented in fulfilment of requirements for the degree of MA at the University of the Witwatersrand, 2017 / This thesis examines the role of the Sun City casino within the context of apartheid homeland policy. The casino was established in the bantustan of Bophuthatswana in 1979, following the abolition of gambling in South Africa, with introduction of the 1965 Gambling Act. This study is motivated by two research questions: (1) the political and economic effects of the casino’s operation in Bophuthatswana; and (2) Sun City’s promotion of Bophuthatswana’s status as an independent state from South Africa. The research for this project was obtained through archival and manuscript materials, oral interviews as well as newspapers archives. The thesis is divided into five chapters which track the trajectory of Sun City’s development. The development and construction of Sun City are explored with regards to the financial contributions by the Bophuthatswana and South African governments. Secondly, the role that the governments of Bophuthatswana and South Africa played in the development of the casino and the political impact thereof. Further, the employment at the casino is investigated, regarding the economic promises made to the both the governments by Southern Sun. The area surrounding Sun City had a high unemployment rate and the resort was promoted as means to curtail this problem. The attractions Sun City offered such as burlesque shows and prostitution are discussed, with specific reference to the casino as a place of racial integration and conspicuous consumption. The sanctions and boycotts are explored regarding the cohort of international sporting and musical entertainers hosted at Sun City and the shifts in the boycott following 1990. Lastly, the fall of bantustan policy is outlined, for the reincorporation of bantustan territories into South Africa highlighted questions of gambling legality. This thesis concludes that Sun City brought exposure and infrastructure to Bophuthatswana, but most of the motivations employed to build the casino, such as high taxation, increased employment and the development of a heritage for the ‘Tswana’ people never materialised. The Sun City casino scheme aimed to further enrich individuals such as Kerzner and Mangope and the marketed benefits were not realised for the Bophuthatswana citizens. / XL2018

A nanotecnologia é um fenômeno que se aplica a praticamente todos os etores da ciência, sendo que na área cosmética o elevado investimento neste campo tem reforçado a idéia de que os produtos nanotecnológicos proporcionam vantagens reais aos consumidores. A crescente exigência do consumidor e os avanços no conhecimento sobre a obtenção e estabilidade dos sistemas dispersos viabilizam o desenvolvimento de veículos diferenciados como, por exemplo, nanoemulsões, que além da inerente estabilidade, apresentam aspecto sensorial agradável, alta capacidade de espalhabilidade e hidratação. Existem dois métodos de obtenção das nanoemulsões: empregando baixa ou alta energia de emulsificação. O uso de óleos vegetais em produtos cosméticos tem sido intensamente valorizado, baseando-se no conceito de que são seguros e biocompatíveis. Podem ser utilizados em cosméticos com sua funcionalidade potencializada, sendo estes ricos em ácidos graxos essenciais, Ômega 3, Ômega 6, Ômega 9, fitosteróis, vitamina C e polifenóis (antocianinas). Alguns óleos vegetais têm poder antioxidante comprovado, previnem as oxidações biológicas e reduzem a formação de radicais livres responsáveis pelo dano celular, grande vilão do envelhecimento e das doenças crônico-degenerativas, como o câncer. Atualmente é crescente o interesse da pesquisa sobre a atividade de substâncias capazes de proteger a pele contra a radiação ultravioleta de forma eficaz. O metoxicinamato de octila é um filtro solar químico capaz de proteger a pele e conferir um fator de proteção solar ao produto final. Nesse estudo foram desenvolvidas nanoemulsões à base de óleos de oliva e semente de uva aditivadas de metoxicinamato de octila. Após a análise da estabilidade físico-química e caracterização das formulações, foram avaliados o potencial antioxidante das formulações, o efeito de proteção solar do sistema, liberação e permeação do ativo e uma possível irritação ocular das formulações que se mantiveram estáveis. / Nanotechnology is a phenomenon that is applied to mainly all sectors of science. In the cosmetic area the high investment has strengthened the idea that nanotechnology products offer real advantages to consumers. The growing demand of consumers and the advances in the knowledge about production and stability of dispersed systems enable the development of differentiated vehicles such as nano-emulsions, which besides their inherent stability, they have pleasant sensorial aspect, high spread ability and hydration power. There are two methods of nano-emulsions attainment: low or high energy of emulsifying. The use of vegetable oils in cosmetic products has had enormous and growing value, based in the concept that they are safe and biocompatible. They can be used in cosmetics with their functionality improved, being rich in essential fatty acids, Omega 3, Omega 6, Omega 9, phytosterols, vitamin C and polyphenols (anthocyanins). Some vegetable oils have proved antioxidant power, as well as they avoid biological oxidation and decrease the forming of free radicals responsible for cellular damage, which are the causes of aging and disease such as cancer. Nowadays, the interest of research about the activity of substances that protect the skin against ultraviolet irradiation in an efficacious way is growing. Octylmethoxycinnamate is a chemical sunscreen that can protect skin and offers sun protection factor to final product. In this study nano-emulsions were developed using olive oil and grape seed oil added with octylmethoxycinnamate. After the analysis of the physic-chemical stability and formulation characterization, the antioxidant potential of formulations, the effect of sun protection of the system, delivery and permeation of the active agent, and a possible ocular irritation of the stable formulations were evaluated.

O objetivo, no capítulo I deste trabalho, foi desenvolver e validar um novo método espectrofotométrico in vitro para a avaliação da eficácia de protetores solares, o qual pode ser adotado na rotina industrial como uma maneira de identificar desvios de qualidade e garantir a eficácia de protetores solares a cada novo lote produzido. O método proposto é baseado na absorção espectrofotométrica na região do UV (280-400 nm) de uma camada fina de protetor solar aplicada na face externa de uma cubeta de quartzo preenchida com uma solução padrão (SP) que absorve em toda a região do UV, a fim de obter uma medida de área sob a curva (ASC), empregada como valor de referência para cada FPS testado. Para o desenvolvimento do método, foram utilizados protetores solares da mesma marca, com valores de FPS de 15; 20; 30; 40; 50 e 60, o qual foi aplicado sobre a face externa da cubeta a uma concentração de 0,2 mg/cm2. A SP consistiu de uma solução de quercetina (10 ?g/mL) à qual foram adicionadas 6 gotas de solução de AlCL3 6%. A partir do espectro de absorvância de cada amostra na região de UV foi calculado o valor da ASC. O método demonstrou ser reprodutível, robusto e eficaz para controle de qualidade de protetores solares. Outro importante objetivo desse estudo, descrito no capítulo II, foi determinar as condições ótimas para a extração de compostos fenólicos do cranberry em pó utilizando metodologia de superfície de resposta, empregando quatro variáveis independentes: (i) tempo de extração; (ii) proporção planta:solvente; (iii) temperatura e (iv) velocidade de agitação, segundo desenho experimental do tipo Box-Behnken, com análise de três respostas: teor de polifenois totais (TPT); atividade antioxidante (CI50; DPPH) e teor de sólidos totais (TST). As condições ideais obtidas foram: tempo de extração 5 horas; proporção planta:solvente 1:2; velocidade de agitação 80 RPM e temperatura 45°C, correspondendo aos valores preditos de 433,1 mg/g; 0,100 mg/mL e 19,9% para o TPT; CI50 DPPH e TST, respectivamente. Em seguida, o extrato otimizado de cranberry foi avaliado com relação à sua atividade fotoprotetora/fotoquimioprotetora. Os resultados apresentados neste trabalho demonstraram que o extrato otimizado de cranberry apresenta elevado potencial antioxidante ao inibir a quimioluminescência (CI50 de 0,202 ± 0,32 ?g/mL) e reduzir a peroxidação lipídica (CI50 de 32,6 ± 5,8 ?g/mL). No ensaio de DPPH, obteve-se uma CI50 de 136,7 ±6,8 ?g/mL. Reduziu em 41% a peroxidação lipídica em células L929. Além disso, o extrato incorporado a uma formulação gel-creme, apresentou elevado potencial fotoprotetor in vitro. / The chapter I of this work aims to develop and validate a new in vitro spectrophotometric method for assessing the effectiveness of sunscreens, which can be adopted in industrial routine production as a way to identify quality deviations and ensure the effectiveness of sunscreen product. Briefly, the proposed method is based on the spectrophotometric absortion on the UV region (280-400 nm) of a thin layer of sunscreen sample applied on the outside of a quartz cuvette which is filled with a standard solution (SS). The area under the curve of absorption of SS and sunscreen sample is obtained. For the experiment development, it was used sunscreens products of the same brand with SPF values of 15; 20; 30; 40; 50 and 60 which was applied on the cuvette outside at a concentration of 0,2mg/cm2. The reference standard used consisted of a quercetin solution added of AlCl3 6%. From the absorbance of each sample spectrum in UV region was calculated the value of the area under the curve (AUC). The spectrophotometric method developed was effective for confirm SPF sunscreen products produced batch to batch. In the chapter II, were determined the optimal conditions for phenolic compounds extraction from cranberry powder using the surface response methodology with four independent variables: (i) extraction time (hours); (ii) ratio plant : solvent; (iii) temperature and (iv) speed agitation (RPM) , according to Box-Behnken, with analysis of three answers: total polyphenol content (TPC); antioxidant activity (IC50; DPPH) and total solids content (TSC). The ideal conditions obtained were: extraction time 5 hours; ratio plant:solvent 1:2; agitation speed 80 RPM and temperature 45°C, corresponding to the values predicted of 433.1 mg/g; 0,100 mg/ml and 19.9% for TPC; IC50 DPPH and TSC respectively. Then, the optimized cranberry extract was evaluated with respect to its photoprotective/photochemoprotective activity. Preliminary results presented in this paper demonstrate the ability of optimized cranberry extract to scavenge free radicals, with a high antioxidant potential to inhibit satisfactorily chemiluminescence generated in the system xanthine/XOD/luminol; presenting IC50 0.202 ± 0.32 ?g/ml; lipid peroxidation using yolk egg as lipid substrate, with an IC50 of 32.6 ± 5,8 ?g/ml. In DPPH test, the optimized extract showed an IC50 of 136.7 ± 6.8 mg/mL. The extract was also able to reducing UVB radiation-induced damage at the cellular level in fibroblasts mice of L929 line, with a 41% reduction in lipid peroxidation in cells compared to irradiated control.

A avaliação dos efeitos dos aerossóis em relação ao balanço radiativo local e global bem como o impacto sobre a saúde humana, principalmente em grandes centros urbanos, demanda que se conheça de forma precisa a sua concentração e distribuição espaço-temporal. Neste contexto, o monitoramento acurado de longo prazo por estações instaladas ao redor do mundo tornou-se um desafio e uma necessidade para várias áreas do conhecimento. Classicamente as estações utilizam a técnica de fotometria solar para inferir a concentração e a distribuição de tamanho dos aerossóis através da profundidade óptica do aerossol (POA) e do coeficiente de Ångström . No presente trabalho é sugerida uma metodologia para estimar POA e do coeficiente de Ångström através de quatro canais espectrais de radiômetros do tipo Multi-Filter Rotating Shadowband Radiometer (MFRSR) que operam em São Paulo desde 1999. Estas estimativas foram avaliadas em relação à rede AErosol RObotic NETwork (AERONET) entre os anos de 2004 a 2006. Os resultados mostram que, em termos de variabilidade temporal da POA, há boa concordância entre os diferentes instrumentos. Entretanto, são encontradas diferenças médias sistemáticas da ordem de 0,03 na magnitude da POA em três dos quatro canais analisados, enquanto que o valor sugerido pela OMM para uma atmosfera limpa é de no máximo 0,02. Este resultado aponta que a metodologia empregada nos MFRSR fornece valores de boa qualidade. Ainda neste trabalho, foram relacionadas variáveis meteorológicas coletadas pela Estação Meteorológica do IAG-USP com a POA e o do coeficiente de Ångström estimados neste trabalho. Observou-se uma relação linear entre o coeficiente de Ångström e a umidade relativa (UR), indicando um crescimento do tamanho médio dos aerossóis que integram um grupo com 0,20<POA<=0,60 no canal 415nm com o aumento da umidade relativa. Acredita-se que este grupo tenha predominância de aerossóis de fontes locais. As medidas de longo prazo permitiram também caracterizar, em conjunto com estimativas espaciais de POA pelo sensor Moderate Resolution Imaging Spectroradiometer (MODIS) a bordo do satélite Terra, a influência do transporte de aerossóis de queimadas da região amazônica e do Brasil central em São Paulo, na série de dados analisados. Estes eventos contribuem para o aumento significativo da POA sobre a região metropolitana e trazem partículas ligeiramente menores que as emitidas por fontes locais. / The evaluation of the aerosol effects to the local and global radiation budget, as well as the impact on human health, particularly in large urban centers, demands knowing accurately their concentration and spatial-temporal distribution. In this context, the accurate long term monitoring from ground based stations installed around the world has become a challenge and a necessity for various areas of knowledge. Classically, the stations use the technique of Sun photometry to infer the concentration and size distribution of aerosols through the aerosol optical depth (AOD) and Ångström coefficient . In this paper we suggest a methodology to estimate AOD and Ångström coefficient through four channels of Multi-Filter Rotating Shadowband Radiometers (MFRSR) operating in Sao Paulo since 1999. These estimates were compared to the results of the AErosol RObotic NETwork (AERONET) between the years of 2004 to 2006. The results showed that the MFRSR can represent well the temporal variability of the AOD, but systematic differences were found with mean values of about 0.03 in AOD, in three of the four analyzed channels. The value suggested by WMO for clean air is at most 0.02. This result indicates that the methodology employed in MFRSR provides values of quality good. Also in this study, meteorological influences on the aerosol optical properties were analyzed. The meteorological variables were monitored at the Meteorological Station of the IAG-USP There was a linear relationship between Ångström coefficient and relative humidity (RH), indicating a growth of the average size of aerosols within a group with 0.20<AOD<=0.60, in the channel 415 nm, with increasing relative humidity. It is believed that this group has predominance of aerosols from local sources. Long term measurements also helped to characterize, together with spatial estimates of AOD by the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the Terra satellite, the influence of the transport of aerosol particles from biomass burning from the Amazon region to São Paulo. It was observed that these events contribute to significant increase in AOD on the metropolitan region and bring slightly smaller particles than the emitted by local sources.

王益鈞. / "2006年12月" / 論文(哲學碩士)--香港中文大學, 2006. / 參考文獻(leaves 230-238). / "2006 nian 12 yue" / Abstracts in Chinese and English. / Wang Yijun. / Lun wen (zhe xue shuo shi)--Xianggang Zhong wen da xue, 2006. / Can kao wen xian (leaves 230-238). / Chapter 第一章 --- 緒論 --- p.1 / Chapter 第一節 --- 孫德謙生平簡介 --- p.1 / Chapter 第二節 --- 《六朝麗指》述略 --- p.6 / Chapter 第三節 --- 硏究動機及方法 --- p.9 / Chapter 第二章 --- 辨體 --- p.12 / Chapter 第一節 --- 引言 --- p.12 / Chapter 第二節 --- 主張駢散合一 --- p.14 / Chapter 〔1〕 --- 不爭文統 --- p.15 / Chapter 〔2〕 --- 宗師六朝 --- p.20 / Chapter 〔3〕 --- 駢散之功用 --- p.25 / Chapter 〔4〕 --- 孫氏「駢散合一」說探源 --- p.29 / Chapter 〔5〕 --- 小結 --- p.30 / Chapter 第三節 --- 駢文與律賦、四六之異 --- p.31 / Chapter 〔1〕 --- 駢文與律賦之別 --- p.31 / Chapter 〔2〕 --- 駢文與四六之異 --- p.35 / Chapter 〔3〕 --- 小結 --- p.39 / Chapter 第四節 --- 對某些駢文體裁的觀點 --- p.39 / Chapter 〔1〕 --- 書序 --- p.40 / Chapter 〔2〕 --- 贈序 --- p.43 / Chapter 〔3〕 --- 連珠 --- p.44 / Chapter 〔4〕 --- 七 --- p.47 / Chapter 〔5〕 --- 墓志 --- p.49 / Chapter 〔6〕 --- 論 --- p.50 / Chapter 〔7〕 --- 檄移 --- p.53 / Chapter 〔8〕 --- 章表牋奏啓 --- p.54 / Chapter 〔9〕 --- 賀牘 --- p.56 / Chapter 〔10〕 --- 小結 --- p.57 / Chapter 第五節 --- 風格 --- p.57 / Chapter 〔1〕 --- 「才氣」與「氣韻」 --- p.58 / Chapter 〔2〕 --- 「繁」與「簡」 --- p.63 / Chapter 〔3〕 --- 「疏」與「密」 --- p.68 / Chapter 〔4〕 --- 陰柔與陽剛 --- p.71 / Chapter 〔5〕 --- 質重與清空 --- p.73 / Chapter 〔6〕 --- 小結 --- p.75 / Chapter 第六節 --- 結語 --- p.76 / Chapter 第三章 --- 修辭 --- p.78 / Chapter 第一節 --- 引言 --- p.78 / Chapter 第二節 --- 對偶 --- p.79 / Chapter 〔1〕 --- 事對 --- p.83 / Chapter 〔2〕 --- 排偶 --- p.88 / Chapter 〔3〕 --- 駢枝 --- p.102 / Chapter 〔4〕 --- 小結 --- p.106 / Chapter 第三節 --- 用典 --- p.107 / Chapter 〔1〕 --- 用典的方法 --- p.100 / Chapter 〔2〕 --- 用典的原則 --- p.118 / Chapter 〔3〕 --- 小結 --- p.129 / Chapter 第四節 --- 鍊字 --- p.129 / Chapter 〔1〕 --- 代字法 --- p.130 / Chapter 〔2〕 --- 字「訛」 --- p.134 / Chapter 〔3〕 --- 虛字 --- p.135 / Chapter 〔4〕 --- 小結 --- p.139 / Chapter 第五節 --- 聲律 --- p.139 / Chapter 〔1〕 --- 自然諧協 --- p.144 / Chapter 〔2〕 --- 輕重緩急 --- p.146 / Chapter 〔3〕 --- 小結 --- p.148 / Chapter 第六節 --- 比興 --- p.148 / Chapter 第七節 --- 形容 --- p.151 / Chapter 第八節 --- 斷插足縮 --- p.154 / Chapter 第九節 --- 結語 --- p.159 / Chapter 第四章 --- 總結 --- p.161 / 附錄一：〈孫德謙年譜初稿〉 --- p.163 / 附錄二：〈孫德謙交遊名錄〉 --- p.225 / 附錄三：參考書目 --- p.229

In recent years, there has been an undeniable shift in how we think about nonhuman animals. A growing philosophical literature on animal rights has encouraged a deep consideration of the moral status of animals, while scientific research has simultaneously confirmed the fact that many animals have complex cognitive, emotional, and social capacities that strongly mirror our own. Although there is still disagreement about what all this implies in terms of our responsibilities to animals, the idea that animals can experience physical or emotional pain or pleasure is the starting point and not the conclusion of the present inquiry. Many species of animals are sentient beings who possess a viewpoint from which they experience and act in the world around them - and hence may be said to be agential. My dissertation explores what it means for us to extend, conceptually and morally, agency to animals. I address this "extension of agency" predominantly from an aesthetic perspective, although in doing so I in no way intend to limit the range of related philosophical concerns. On the contrary; to extend agency to animals, I argue, calls for a revised understanding of our habitual spectatorial stances--how we look at animals. To grasp these stances, I investigate how animals have been looked at in literary works of art. Does the literature show our spectatorship to extend agency to animals or do we objectify them so as to deny their capacities as agents altogether? My dissertation focuses on excerpts from three significant works of literature--works by Nathanael West, Ernest Hemingway, and Leo Tolstoy--each of which stages a specifically athletic engagement involving animals, in this way bringing focus to the issue of our spectatorship. Each excerpt serves as philosophically illuminating material and as an exemplary case regarding humanity's willingness or refusal to extend agency to animals. I am particularly interested in the role of animals in human-engineered sports, and in how extending agency to animals in sports changes or ought to change the way we watch sports that involve animals. Within the philosophy of sport, the accepted approach has been to liken animals to sporting equipment or tools, and thus to make no substantive distinction between animal and non-animal sports. This, I argue, reflects a refusal to extend agency to animals, which has led also to an oversimplification and mischaracterization of sports involving animals in the first place. Nathanael West's The Day of the Locust takes up cockfighting, Hemingway's The Sun Also Rises centers around bullfighting, and Tolstoy's Anna Karenina includes a memorable, emotionally stirring, steeplechase episode. In addition to investigating what I refer to as the "extension of agency" to animals in these literary works, I revise some of the basic assumptions that have recently guided the burgeoning subfield of the philosophy of sports. I argue that we must acknowledge that there exists a fundamental difference between the modes of spectatorship that accompany sports that only involve humans, and those that involve animals. For to extend agency is to extend the moral domain to that or those who are "other" than ourselves. Once animals are introduced into a sport, they imbue the sport with all the aesthetic complexities that come with looking at an animal outside of sport: the unique exotic beauty of the animal body and its fitness to function, but also its vitality, wild autonomy, expressiveness, and reciprocity of gaze. This means that our interactions with animals, even in the case of organized sport or performance, are not purely aesthetic in a formal artistic sense; they are also expressive and communicative. The concept of the formal aesthetic that many employ when talking about art - the formal qualities that we attribute to the arts - is not sufficient to accommodate sports that involve animals and a spectatorship of animals. Animals are expressive, and this expressiveness is fundamental to correctly understanding our spectatorship of them. Animals are far more than our equipment. The aesthetic of animal sports must, I conclude, accordingly incorporate expressiveness and empathy, such that we see animals in fellowship with us as participants in sports. Extending agency to animals is the core concept of a morally inflected aesthetic of inter-subjectivity.

Le dieu Sol, personnification de l’astre du jour, est documenté à Rome et en Italie bien avant l’avènement de l’empire. Dieu longtemps secondaire, ce n’est que durant l’Antiquité tardive qu’il gagne en importance, mais jamais au point de supplanter Jupiter et de devenir la divinité suprême. Cette étude a pour but d’offrir une approche renouvelée de l’interprétation de son image, en mettant en valeur la constance de son iconographie, l’uniformité des messages qui lui sont associés, son importance croissante dans l’idéologie politique impériale, et ensuite de les expliquer et de les réintégrer dans une perspective plus globale du IIe au IVe siècle. Cette présente thèse a ainsi pour but d’étudier les représentations du dieu Sol, à la fois personne divine et personnification de l’astre diurne, puis d’en déduire la nature du pouvoir cosmique du dieu, notamment par l’étude des documents dans lesquels il est mis en relation directe ou indirecte avec d’autres divinités, et de mettre en relief la spécificité de l’utilisation de l’image du dieu Sol dans un contexte impérial. / The Sun deity was documented in Rome and in Italy well before the advent of the Empire. Considered secondary for a long time, this god’s importance grows only during the late Antiquity.This study aims at offering a renewed approach of its image by emphasizing the constancy of its iconography, the uniformity of the messages associated to it, and its increasing importance in the imperial political ideology which we are to explain and place in a more global perspective from the 2nd to the 4th century.Within this thesis we will study the representations of the Sun deity, as a god and as the personification of the sun. From the analysis of its documented relationship to other divinities we will establish its cosmic power and the particular use of its image in an imperial context.