Über die Fluoreszenzfähigkeit von Triphenylcarboniumderivaten / Fluorescence Yields of Triphenylcarbonium Derivatives

1973 ◽  
Vol 28 (7) ◽  
pp. 1136-1139 ◽  
Author(s):  
G. Hoffmann ◽  
A. Schönbucher ◽  
H. Steidl

The absolute fluorescence yields of triphenylcarbonium derivatives are correlated with the change of bond order between central-C-atom and phenyl group during the electronic transition. The fluo rescence yield is reduced by a rotation of the phenyl group only if the π-electron system of the phenyl group is sufficiently strong coupled to the other part of the molecule. The change of bond order can be assumed as a measure for the coupling.

2017 ◽  
Vol 39 (2) ◽  
pp. 265-276 ◽  
Author(s):  
Kas Saghafi

In several late texts, Derrida meditated on Paul Celan's poem ‘Grosse, Glühende Wölbung’, in which the departure of the world is announced. Delving into the ‘origin’ and ‘history’ of the ‘conception’ of the world, this paper suggests that, for Derrida, the end of the world is determined by and from death—the death of the other. The death of the other marks, each and every time, the absolute end of the world.


2009 ◽  
Vol 54 (2) ◽  
pp. 123-143
Author(s):  
Bernadette Collenberg-Plotnikov

›Ikonen‹ sind heute nicht mehr nur die Ikonen der christlichen Kirche, sondern vor allem die Ikonen der modernen Massenkultur. Beide Arten von Ikonen werden in der neueren Kunstreflexion aufgegriffen: Kunst gilt entweder, verstanden als Erbin der religiösen Ikone, als Phänomen, das Absolutes in singulärer Weise anschaulich er- fahrbar macht. Oder aber die Kunst gilt umgekehrt lediglich als Klasse in der Welt der säkularen Ikonen. Demgegenüber wird im Beitrag erstens die These vertretenwerden, daß die neuere Kunst sowohl Aspekte transzendenter als auch immanenter Ikonen umfaßt. Zugleich ist es aber, so die zweite These, für unser Kunstverständnis charakteristisch, ein theoretisches Kontrastverhältnis zwischen Kunst und Ikone an- zunehmen. Dieses gründet auf einer spezifischen Reflexivität der Kunst, durch die sie sich von der Ikone beiderlei Art kategorial unterscheidet. Today, the word ›icon‹ usually no longer refers to the icons of the Christian church, but to the icons of the modern mass-culture. Both sorts of icons play a key-role in the recent discussion about art: Either art is supposed to be a descendant of the religious icon, a phenomenon that gives us a singular visual experience of the Absolute. On the other hand, art is supposed to be just one class among others in the wide world of the secular icons. In contrast to these two positions this essay contends that modern art comprehends aspects of transcendent as well as of immanent icons. Furthermore, it argues that at the same time it is characteristic for our notion of art to suppose a contrast between art and icon. This contrast is based on a specific reflectivity of art, which marks a categorical difference between art and both sorts of icons.


The barometer, here alluded to, may in some measure be consi­dered as two separate and independent barometers, inasmuch as it is formed of two distinct tubes dipping into one and the same cistern of mercury. One of these tubes is made of flint glass, and the other of crown glass, with a view to ascertain whether, at the end of any given period, the one may have had any greater chemical effect on the mercury than the other, and thus affected the results. A brass rod, to which the scale is attached, passes through the framework, between the two tubes, and is thus common to both : one end of which is furnished with a fine agate point, which, by means of a rack and pinion moving the whole rod, may be brought just to touch the surface of the mercury in the cistern, the slightest contact with which is immediately discernible; and the other end of which bears the usual scale of inches, tenths, &c.; and there is a separate vernier for each tube. A small thermometer, the bulb of which dips into the mercury in the cistern, is inserted at the bottom : and an eye­piece is also there fixed, so that the agate point can be viewed with more distinctness and accuracy. The whole instrument is made to turn round in azimuth, in order to verify the perpendicularity of the tubes and the scale. It is evident that there are many advantages attending this mode of construction, which are not to be found in the barometers as usu­ally formed for general use in this country. The absolute heights are more correctly and more satisfactorily determined ; and the per­manency of true action is more effectually noticed and secured. For, every part is under the inspection and control of the observer; and any derangement or imperfection in either of the tubes is imme­diately detected on comparison with the other. And, considering the care that has been taken in filling the tubes, and setting off the scale, it may justly be considered as a standard barometer . The pre­sent volume of the Philosophical Transactions will contain the first register of the observations that have been made with this instru­ment.


2021 ◽  
Vol 21 (1) ◽  
pp. 32-46

Abstract Remains of the grand platform in the locus of Huangchengtai at Shimao site in Shenmu, Shaanxi was discovered and excavated during the 2018–2019 season. The south-eastern corner and southern buttress of the platform were revealed. The locations of the other three sides of the buttresses were also preliminarily confirmed. As many as 70 stone carvings were discovered from multiple contexts, including the surface of the southern buttress, the floor of the corridor, as well as the debris of the southern buttress inside the corridor. The relative chronology of this platform and stone carvings cannot be later than the late Longshan period. The absolute date ranges from 2000 BCE to 1800 BCE. Fieldwork performed at the grand platform encourages multiple archaeological discussions, including the settlement layout within the Huangchengtai area, the nature of the settlement, and its role as the core of the Shimao site.


2018 ◽  
Author(s):  
Michael Nestler

Transcendence and immanence are two terms used to differentiate two realities, one of transcending worldly experience and the other of an inner-worldly experience. In scholastic theology (kalām), a respective distinction is being made regarding the image of God, whereby transcendence (tanzīh) is set against anthropomorphism (tašbīh) to solve the problem of how to deal with Quranic expressions that attribute human – formal or essential – characteristics to God. Also, in mysticism, the notion of transcendence and immanence of God plays a central role, for instance, in the teachings of Ibn al-ʿArabī. He mainly discusses this distinction in the chapter of Noah in Fuṣūṣ al-ḥikam (“The Bezels of Wisdom”), regarding knowledge of God. He rejects a pure theology of transcendence as it describes only a part of the divine reality. However, he points out that even though His immanent reality can be experienced, it is not comprehensible, because it is unlimited. Both realities interlock through the idea of the Oneness of Being or Unity of Existence (waḥdat al-wuǧūd), because ‘in reality’ they are nothing else than God. Ibn al-ʿArabī illustrates this ontological dependency by the example of Noah’s legend, by showing that the prophet supported the belief of the absolute transcendence of God, which was unacceptable for his people, not because they negated God’s existence, but because they had an immanent image of God. Accordingly, Ibn al-ʿArabī interprets the divine punishment, instead of misfortune, as immersing in the sea of knowledge of God. In this way the soul becomes a place of manifestation or a mirror of the divine reality.


Author(s):  
Mingwen Yang ◽  
Zhiqiang (Eric) Zheng ◽  
Vijay Mookerjee

Online reputation has become a key marketing-mix variable in the digital economy. Our study helps managers decide on the effort they should use to manage online reputation. We consider an online reputation race in which it is important not just to manage the absolute reputation, but also the relative rating. That is, to stay ahead, a firm should try to have ratings that are better than those of its competitors. Our findings are particularly significant for platform owners (such as Expedia or Yelp) to strategically grow their base of participating firms: growing the middle of the market (firms with average ratings) is the best option considering the goals of the platform and the other stakeholders, namely incumbents and consumers. For firms, we find that they should increase their effort when the mean market rating increases. Another key insight for firms is that, sometimes, adversity can come disguised as an opportunity. When an adverse event strikes the industry (such as a reduction in sales margin or an increase in the cost of effort), a firm’s profit can increase if it can manage this event better than its competitors.


Derrida Today ◽  
2009 ◽  
Vol 2 (2) ◽  
pp. 260-270
Author(s):  
Francesco Vitale

The paper aims to present a reading of the question of Testimony rising in Derrida's later works (from Faith and Knowledge to Poetics and Politics of Witnessing): the experience of Testimony as the irreducible condition of the relation to the Other, of every possible link among living human singularities and, thus, of the thinking of a community to come. This thinking is able to divert the community from the economy grounding and structuring it within our political tradition governed by the metaphysics of presence, which demands the sacrifice of the Other in its multiple theoretical and practical forms. We intend to read this proposal and to point out its rich perspectives by bringing it into the articulation of an ethical-political archi-writing. So we suggest going back to Derrida's early analyses of phenomenology and to De la grammatologie in order to present a reading of archi-writing as the irreducible condition of the relation to otherness and, thus, of the experience through which a living human singularity constitutes itself, a singularity different from the one our tradition compels us to think of within the pattern of the absolute presence to the self, free from the relation to the other.


2020 ◽  
Vol 10 (3) ◽  
pp. 115
Author(s):  
Muhamet Reçica ◽  
Naser Pajaziti

Topics related to the structure of the temporal system of Albanian language always give opportunities for new discussions to deal with certain aspects related to various forms of this system, and one of them is the aorist, as a tense containing many semantic, temporal, aspectual, stylistic values, etc. The relationships that exist between the verbal tenses in this system within the absolute time-relative time dimension, which relate to the independent or dependent use of temporal forms against one another in different discoursing contexts, make up an interpretation-based approach to interest. Hence, the essential objective of this paper will be specifically the relations of the Albanian aorist to the other verbal forms, always observed with a time reference point, to illuminate the character of these purely temporal relations against each other under all circumstances of the actions that take place and are displayed by verbal forms in different contexts, relying on the corpus of examined materials.


Axon ◽  
2019 ◽  
Author(s):  
Sophia Aneziri ◽  
Denis Rousset

The present paper presents the first volume of Collezioni epigrafiche della Grecia occidentale/Epigraphische Sammlungen aus Westgriechenland. It reflects, on the one hand, on the absolute necessity to preserve multilingualism in Altertumswissenschaft; on the other, on the purposes and methods of making catalogues or inventories of epigraphic collections; and finally on the past conditions and the current state of epigraphic and prosopographic research in West Greece and especially in Aetolia.


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