876 research outputs found
Les recherches sur Paracelse : Dilg Von Peter, Rudolph Hartmut, Resultate und Desiderate der Paracelsus-Forschung
No full textLedermann François. Les recherches sur Paracelse : Dilg Von Peter, Rudolph Hartmut, Resultate und Desiderate der Paracelsus-Forschung. In: Revue d'histoire de la pharmacie, 83ᵉ année, n°305, 1995. pp. 208-210
Martin Fontius, Hartmut Rudolph, Gary Smith (éd.) : Labora diligenter. Potsdamer Arbeitstagung zur Leibnizforschung vom 4. bis 6. Juli 1996, 1999
No full textLaudin Gérard. Martin Fontius, Hartmut Rudolph, Gary Smith (éd.) : Labora diligenter. Potsdamer Arbeitstagung zur Leibnizforschung vom 4. bis 6. Juli 1996, 1999. In: Dix-huitième Siècle, n°33, 2001. L'Atlantique, sous la direction de Marcel Dorigny . p. 686
Beobachtungen zu Leibniz' Ekklesiologie
No full textIm Zentrum meiner Untersuchung steht die Leibnizsche Ekklesiologie. Zugleich geht es um ein theoretisch-philosophisches und um ein praktisch-politisches Problem. Der Schwerpunkt des Aufsatzes liegt nicht auf der theologisch-dogmatischen Ebene. Vielmehr geht es um die Bedeutung der Kirche in der politischen Reflexion von Leibniz
Fritz Schumacher & Heinrich Tessenow: Architecture, an Art or a Craft?
No full textThis booklet contains the inaugural lectures of Fritz Schumacher and Heinrich Tessenow given on the occasion of their appointment respectively as professors at the Technical University in Dresden and The Art Academy in Dresden.The lectures provide novel insights into their understanding of architecture and into their proposals for reform of architectural education. they are proceeded by an introductory essay of the guest editor architectural historian Hartmut Frank.History, Form & Aesthetic
Sociedades modernas, sociedades de obsolescência: a sociologia temporal de Hartmut Rosa / Modern societies, obsolescence societies: Hartmut Rosa's temporal sociology
No full textResenha de: ROSA, Hartmut. Aceleração: a transformação das estruturas temporais na modernidade. São Paulo: Editora Unesp, 2019. Centrado na revisitação da modernidade a partir de uma perspectiva temporal, Hartmut Rosa sustenta o conceito de aceleração social como aspecto fundante do projeto moderno. Explorando diferentes variáveis causais para o conceito da aceleração social, a resenha examina as transformações das instituições morais, valorativas e políticas ocorridas ao longo do desenvolvimento histórico da modernidade como episódios induzidos pela obsolescência. Sendo esta um produto de campos de ação crescentemente cambiantes e acelerados, o autor mobiliza esse conceito para fundamentar inédita proposta de diferenciação entre a modernidade e a modernidade tardia como momentos históricos calcados em diferentes níveis de compressão espaço-temporal, estabilidade institucional e temporalização de projetos individuais e coletivos de futuro.***AbstractCentered on revisiting modernity from a temporal perspective, Hartmut Rosa supports the concept of social acceleration as a fundamental aspect of the modern project. Exploring different causal variables for the concept of social acceleration, the review examines the transformations of moral, valuative and political institutions that occurred during the historical development of modernity as episodes induced by obsolescence. As this is a product of increasingly changing and accelerated fields of action, the author mobilizes this concept to substantiate an unprecedented proposal for differentiation between modernity and late modernity as historical moments based on different levels of space-time compression, institutional stability and temporalization of individual and collective future projects
Surveying silk fibre degradation by crystallinity determination: a study on the Tang-Dynasty silk treasure from Famen Temple, China
No full textWhen Chinese archaeologists opened an unknown vault under the collapsed pagoda of Famen Temple near Xian (Shaanxi Province, NW China) in 1987, they found a vast amount of valuable silk textiles. The degraded textiles were part of a treasure comprising hundreds of artifacts deposited by Tang dynasty (ad 618–907) emperors as a gift to the temple. Run as a bilateral German-Chinese project, the Roemisch-Germanisches Zentralmuseum Mainz established a textile conservation laboratory in Shaanxi´s provincial capital Xian in 2001, joining numerous other laboratories that have existed there since the early 1990s.This preliminary study represents part of an ongoing investigation programme that accompanies the conservation work. The Tang dynasty silk is generally in a very poor state of preservation as a result of its long burial period. Large sections have only survived as an amorphous brown mass of fibre debris. Some parts are better preserved, however, offering the unique opportunity to study the whole range of degradation stages on ancient silks.This preliminary scientific investigation focuses on the determination of the silk fibres’ crystallinity and its relation to the ageing process. As we know from modern material, silk is mainly crystalline, albeit in a somewhat amorphous state. The methods of investigation used were X-ray diffraction (XRD) using synchrotron radiation, which is a new way to determine crystallinity of ancient silk fibres; and polarized Fourier transform infrared spectroscopy (FTIR) for the determination of crystallite orientation. Both methods were specifically devised to gain information on small single fibres
1-Phenyl-1,2-cyclohexadiene: Generation, Interception by Activated Olefins, Dimerisation and Trimerisation
No full textFour possible precursors of 1-phenyl-1,2-cyclohexadiene (2) were examined, namely, 6,6-dibromo-1-phenylbicyclo[3.1.0]hexane, (1 alpha,5 alpha,6 alpha)-6-bromo-6-fluoro-1-phenylbicyclo-[3.1.0]hexane, 1-bromo-2-phenylcyclohexene and 1-bromo-6-phenylcyclohexene. All four compounds could be converted into 2, as demonstrated by the products of the interception of 2 with activated olefins. Styrene, 1,1-diphenyl-ethene, indene, furan and 2,5-dimethylfuran were employed as such. Whereas the first three gave [2+2] cycloadducts of 2, the last two provided one [4+2] cycloadduct each. To create the [2+2] cycloadducts, the it bond of 2 that is more remote from the phenyl group reacted, whereas the pi bond of 2 conjugated with the phenyl group exclusively produced the [4+2] cycloadducts. The generation of 2 in the absence of a trapping reagent brought about relatively good yields of a dimer or a trimer of 2 depending on the mode of the liberation of 2. Being derivatives of triphenylene, the dimer as well as the trimer have unusual structures, thereby indicating that a phenyl group is participating in the formation of these compounds. The most surprising structure of the trimer was elucidated by X-ray crystal diffraction. As to the mechanisms, diradical intermediates are proposed both for the cycloadditions and for the dimerisation. The initial steps of the latter seem to proceed also in the trimerisation.Deutsche Forschungsgemeinschaft; Fonds der Chemischen Industri
Daniel Ernst Jablonskis Wirken im Geist der Reformation, des Humanismus und der Frühaufklärung | Daniel Ernst Jablonski and his Activities in the Spirit of Humanism, the Reformation, and the Early Enlightenment
No full textHe was a tutor for the Radvilas (Radziwiłłs) at Biržai, a student at Oxford, headmaster of a gymnasium in Leszno, and court preacher in Königsberg and later Berlin. Of all the stages in the life of Daniel Ernst Jablonski (1660–1741), his contribution, together with Gottfried Wilhelm Leibniz, to the establishment in 1700 of the Kurfürstlich Brandenburgische Societät der Wissenschaften, the predecessor of the Prussian Academy of Sciences, is emphasised the most. However, his efforts to achieve ecumenical communication between evangelical churches of various hues were no less significant. The article deals with the development of Jablonski’s views leading to these efforts as a result of his family history: the experiences of his childhood and youth. Manifestations of efforts in East Central Europe, especially in the Commonwealth of the Two Nations, are presented through Jablonski’s activities in pursuing ecclesiastical unity, defending the rights of religious minorities, engaging in Hebrew studies, and in the ecclesiastical controversy in Russia
- …
