The Heat of Swelling of Rubber and Its Relation to the Previous History of the Rubber and to the Nature of the Swelling Agent

1934 ◽  
Vol 7 (3) ◽  
pp. 462-476
Author(s):  
Lothar Hock ◽  
Hans Schmidt
Keyword(s):  
Surface Energy ◽  
Previous History ◽  
Boundary Surface ◽  
Point Of View ◽  
Critical Examination ◽  
Fiber Structure ◽  
General Direction ◽  
Swelling Agent ◽  
History Of ◽  
The One

Abstract The swelling method developed by Hock and Bostroem for determining calorimetrically changes in the state of energy of raw rubber (the Joule heat effect on stretching, the fiber structure of Hock, and the filler effect of Wiegand) has been developed further, especially by Hock and Hartner, with the object of obtaining information about the boundary surface energy between rubber and these fillers by means of the heat of swelling first of all of unvulcanized rubber mixtures containing active fillers such as carbon black and zinc oxide. The “activity” of fillers of this kind evidently depends upon the effect of boundary surface forces, which increase the mechanical work of rupture of rubber, A=∫p.dl, after their admixture in the rubber. To ascertain to what extent and in what quantitative way this mechanical “reënforcement” of rubber is related to the boundary surface energy, where there is mutual wetting, is a problem which is attractive both from a theoretical and technological point of view, and to the solution of which the works mentioned offer the first contributions. In continuing the experiments along the same general direction, on the one hand from the point of view of a critical examination of methods and on the other hand with the object of increasing the precision of the measurements, it was soon realized that it would be necessary to carry out special preliminary experiments. In fact, when it was once decided to replace benzine, which had been particularly suitable in experiments on the swelling of rubber mixtures because of certain unique properties, by benzene and other liquids, it became necessary to determine the heat of rubber as an objective in itself, whereas in the earlier experiments this had been only a means to an end.

La citoyenneté et la construction de l'Europe : discussions théoriques

Res Publica ◽  
1994 ◽  
Vol 36 (3-4) ◽  
pp. 361-380
Author(s):  
Paul Magnette
Keyword(s):  
Second World War ◽  
Point Of View ◽  
Nation State ◽  
The European Union ◽  
World War ◽  
Dual Nature ◽  
European Citizenship ◽  
History Of ◽  
The One ◽  
Second World

This paper examines the evolving ideological content of the concept of citizenship and particularly the challenges it faces as a consequence of the building of the European Union. From an epistemological point of view it is first argued that citizenship may be described as a dual concept: it is both a legal institution composed of the rights of the citizen as they are fixed at a certain moment of its history, and a normative ideal which embodies their political aspirations. As a result of this dual nature, citizenship is an essentially dynamicnotion, which is permanently evolving between a state of balance and change.  The history of this concept in contemporary political thought shows that, from the end of the second World War it had raised a synthesis of democratic, liberal and socialist values on the one hand, and that it was historically and logically bound to the Nation-State on the other hand. This double synthesis now seems to be contested, as the themes of the "crisis of the Nation State" and"crisis of the Welfare state" do indicate. The last part of this paper grapples with recent theoretical proposals of new forms of european citizenship, and argues that the concept of citizenship could be renovated and take its challenges into consideration by insisting on the duties and the procedures it contains.

scholarly journals VII.—On the Geological History of the Cornish Serpentinous Rocks

1886 ◽  
Vol 3 (8) ◽  
pp. 359-367
Author(s):  
J. H. Collins
Keyword(s):  
East Coast ◽  
Point Of View ◽  
Open Cavity ◽  
The Other ◽  
Geological History ◽  
History Of ◽  
The One ◽  
Great Mass

My argument that at Porthalla there is a “passage” from hornblende-schist to serpentine; or rather that some beds of a common series have been changed into serpentine, others into hornblende-schist, and others again into a substance of intermediate character, is, I think, much strengthened by the fact that many such “apparent passages” are admitted to exist by all those who have examined the Lizard Coast with any degree of detail. De la Beche's description of that seen near the Lizard Town is as follows, and it would apply equally well to the others. “The hornblende slate,” he says, “supports the great mass of the Lizard serpentine with an apparent passage of the one into the other in many places—an apparent passage somewhat embarrassing,” that is, from his point of view; from mine it is perfectly natural. He goes on to say: “Whatever the cause of this apparent passage may have been, it is very readily seen at Mullion Cove, at Pradanack Point, at the coast west of Lizard Town, and at several places on the east coast between Landewednack and Kennick Cove, more especially under the Balk … and at the remarkable cavern and open cavity named the Frying-Pan, near Cadgwith.” At Kynance some of the laminse of serpentine are not more than one-tenth of an inch in thickness for considerable distances.

scholarly journals Von Expeditionsberichten zum Führer — die Anfänge der Ratgeber für Riesengebirgereisende an der Jahrhundertwende des 18. zum 19. Jahrhundert

2019 ◽  
Vol 12 ◽  
pp. 33-53
Author(s):  
Jan Pacholski
Keyword(s):  
Point Of View ◽  
Mountain Range ◽  
Special Role ◽  
The North ◽  
Counter Reformation ◽  
Border Dispute ◽  
History Of ◽  
Nature Studies ◽  
The One ◽  
Travel Accounts

From travel accounts to guidebooks: The beginnings of guidebooks to the Giant Mountains Karkonosze for travellers in the late 18th and early 19th centuryIn the history of European tourism the Giant Mountains Karkonosze occupy a unique place thanks to the Chapel of St. Lawrence, funded by Count Christoph Leopold Schaffgotsch and located on the summit of Śnieżka. Its construction in the Habsburg dominions in the turbulent period of the Counter-Reformation was meant to finally put an end to the Silesian-Bohemian border dispute and become a visible sign of Catholic rule over the highest mountain range of the two neighbouring countries. The construction of the chapel also marked the beginning of tourism in the highest range of the Sudetes; initially, its nature was religious and focused on pilgrimages to the summit of Śnieżka, featuring, in addition to local inhabitants, also sanatorium visitors to Cieplice Warmbrunn, which was owned by the Schaffgotschs.After the three Silesian Wars, as a result of which the lands to the north of the mountains were separated from the Habsburgs’ Kingdom of Bohemia, the situation in the region changed radically. The Counter-Reformation pressure ceased and the Lutherans began to grow in importance, supported as they were by the decidedly pro-Protestant Prussian state, governed by its tolerant monarch.The period was also marked by an unprecedented growth in the literature on the Giant Mountains — there were poems Tralles, nature studies Volkmar and travel accounts GutsMuths, Troschel and others written about the highest range of the Sudetes. A special role among these writings was played by works aimed at introducing the public from the capital Berlin to the new province of the Kingdom of Prussia, especially to the mountains, so exotic from the point of view of the “groves and sands” of Brandenburg. These publications were written primarily by Lutheran clergymen, which was not without significance to the nature of the works. This was also a time when the first guidebooks to the Giant Mountains were written, with many of their authors also coming from the same milieu.What emerges from this image is a kind of confessionalisation of tourism in the highest mountains of Silesia and Bohemia: on the one hand there are mass Catholic pilgrimages and on the other — a new type of individual tourists who, with a book in hand, traverse mountain paths in a decidedly more independent fashion.

scholarly journals The Perspective of Overcoming Nihilism in Heidegger’s Dialogue with Jünger

2019 ◽  
Vol 30 (1) ◽  
Author(s):  
Tautvydas Vėželis
Keyword(s):  
Point Of View ◽  
The Other ◽  
Dialectical Thinking ◽  
Other Hand ◽  
History Of ◽  
Metaphysical Tradition ◽  
The One ◽  
Relationship Of ◽  
The Relationship ◽  
European Civilization

This article examines the problem of overcoming nihilism in Heidegger’s dialogue with Jünger. It is suggested that nihilism is manifested in various forms and is the deep logic of the whole history of European civilization. One of the main aims of this paper is to outline the relationship of nihilism and Nothing in Heidegger’s dispute with Jünger, viewing how Heidegger distinguishes his approach from Jünger’s point of view. Heidegger, on the one hand, treats nihilism as consummation of the Western metaphysical tradition, on the other hand, identifies Nothing itself as the shadow of Being, which cannot be overcome in the traditional dialectical thinking manner.

scholarly journals “Mother of the Faithful” and “Lion of Allah” in the Prophetic Tradition and Early History of the Caliphate or Why the Islamic Jama at Disintegrated?

2020 ◽  
Vol 16 (2) ◽  
pp. 47-56
Author(s):  
F. A. Asadullin
Keyword(s):  
Point Of View ◽  
Islamic Period ◽  
Islamic Schools ◽  
Regional Conflicts ◽  
Long Time ◽  
History Of ◽  
The Russian Federation ◽  
The One ◽  
Early Islamic Period ◽  
Early Islamic

The problem of disintegration of the Islamic Ummah a long time ago became the one of the most important for the Islamic world and worldview. The wave of violence in the Near and Middle East sharpened some regional conflicts, which have already taken place before. The paper deals with the roots of this conflict atmosphere in the Early Islamic period. As the tradition affirms, the Prophet Muhammad predicted the Ummah to split in 73 sects. Today there exist in any case not less than 73 different Islamic schools, movements and organizations, which mutually and constantly contest their doctrinal authenticity. Moreover, the activity of quasi- Islamic extremist organisations like the ISIS, which is forbidden inside as well as outside the Russian Federation, is quite remarkable. All these factors demonstrate, that from the academic point of view it is actual to critically research the nature of fragmentation and disintegration of Islamic communities through the prism of prophetic legends. This paper is to consider as an attempt to resolve this multidimensional problem.

Chaplain and Steward: Francis Blakiston SJ (1617–93) at Linton-on-Ouse

2001 ◽  
Vol 25 (3) ◽  
pp. 423-433
Author(s):  
John Trappes-Lomax
Keyword(s):  
Point Of View ◽  
The Other ◽  
Catholic Priests ◽  
Other Hand ◽  
Spare Time ◽  
History Of ◽  
The One

Chaplains in penal times were on occasion employed as stewards, though perhaps not as frequently as is sometimes supposed; from the point of view of their employers this is not entirely surprising; on the one hand chaplains might reasonably be expected to be literate, numerate and honest; on the other hand the restrictions under which Catholic priests worked might well leave them a sufficiency of spare time for secular affairs. The interest of the letter which follows lies not in the mere fact of such a stewardship, but in the extraordinarily vivid picture it gives of what it was like for a professed Religious to be involved in running an estate—particularly when his employer was of questionable sanity. Some light is incidentally thrown on the history of Catholicism in Linton-on-Ouse.

Communication as source and motivator of language evolution

2003 ◽  
Vol 27 (3) ◽  
pp. 249-268 ◽  
Author(s):  
Vilmos Benczik
Keyword(s):  
Language Change ◽  
Language Evolution ◽  
Communication Technologies ◽  
Point Of View ◽  
Syntactic Complexity ◽  
Linguistic Resources ◽  
Human Thought ◽  
The Past ◽  
History Of ◽  
The One

Language emerges and changes primarily through communication; therefore communication technologies play a key role in the history of language change. The most powerful communication technology from this point of view is phonetic writing, which has a double effect on language: on the one hand it impoverishes suprasegmental linguistic resources; on the other hand it evokes in language a profound and sophisticated semantic precision, and also syntactic complexity. The huge progress in abstract human thought that has taken place over the past three or four centuries has come about on the basis of these linguistic changes. Today, when writing seems to be losing its earlier hegemony over communication, the question arises as to whether this will lead to the erosion of human language, and also of human thought.

The Place of Tulsī dās in North Indian Devotional Tradition

1966 ◽  
Vol 98 (2) ◽  
pp. 123-140 ◽  
Author(s):  
F. R. Allchin
Keyword(s):  
Point Of View ◽  
North India ◽  
Considerable Part ◽  
The Past ◽  
Whole Process ◽  
Great Body ◽  
Small Measure ◽  
History Of ◽  
The One ◽  
Relationship Of

To the outside observer the history of Hindu sectarianism often appears as a disorganized tangle, lacking clarity and precision. The whole process is made if anything more complex by the ill-defined relationship of sect and non-sect. As Renou remarks: Though no statistics are available, even for the present day, we have grounds for supposing that the most active sects were themselves only isolated groups within the great body of believers. From another point of view, however, the history is more understandable. A considerable part of sectarian activity during the past 1,500 years has been concerned with the spread and regional development of a single great devotional movement. Seen from this position, the uniformity and theological coherence of the sects, whether they be called Vaiṣṇavite, Śaivite, or by some other name, is remarkable and often overrides the no less real disparities of doctrine or detail at another level. Again, in this process regional variations have arisen in no small measure as a result of the popular character of the writings of particular saints. Thus, for example, Basava or Purandara Dāsa hold pride of place in the Karnāṭka, the one Vīra Śaiva, the other Vaiṣṇava; in Mahārāṣṇra devotion has in no small part been moulded by the thought of Jāân Dev or Tukā Rām; in the Pañjāb by Nānak; and in the Hindī region by Kabīr Dās, Tulsī Dās, and Sūr Dās. Throughout north India the influences which lay behind the movement were largely, but by no means exclusively, Vaiṣṇavite; yet other streams contributed, Śaivite, Buddhist, Tāntrika, Yogī, etc.

scholarly journals The Endocrine Hypothalamus: An Historical Review

1974 ◽  
Vol 1 (1) ◽  
pp. 24-28 ◽  
Author(s):  
T.F. Lévêque
Keyword(s):  
Diabetes Insipidus ◽  
Historical Review ◽  
Point Of View ◽  
Secretory Cells ◽  
Pars Intermedia ◽  
Posterior Lobe ◽  
Antidiuretic Effect ◽  
Endocrine Hypothalamus ◽  
History Of ◽  
The One

The history of the hypothalamus and neuroendocrinology is so intimately related to the development of our ideas on the disease known as diabetes insipidus, that any discussion of the one must include a discussion of the other. Many authors have compared the history of diabetes insipidus to a comedy of errors. Indeed, the whole problem seems to have fared rather badly from the very beginning when Magnus and Schafer (1901), and Schafer and Herring (1905) demonstrated that extracts of the posterior lobe of the pituitary body had a diuretic effect rather than the antidiuretic effect as we know it today. Furthermore, from a histological point of view, Herring (1908) and later Cushing (1933) were of the opinion that the cellular constituents of the posterior lobe were incapable of secreting the active factors attributed to that lobe and that consequently a search had to be made elsewhere for the secretory cells. Herring (1913) visualized the secreting cells as coming from the pars intermedia and migrating into the pars nervosa where they degenerated and released the “hormones”. Cushing (1933) fully subscribed to this and in 1933 stated rather emphatically that “it is scarcely conceivable that the neural core of the lobe is capable independently of elaborating a hormone.”

scholarly journals Atypical case of mucous membrane pemphigoid in a 26-year-old man

2018 ◽  
pp. bcr-2018-225872
Author(s):  
Deepak Sambhara ◽  
Ji Hyae Lee ◽  
Seth M Pantanelli
Keyword(s):  
Mucous Membrane ◽  
Previous History ◽  
Immunohistochemical Analysis ◽  
Mucous Membrane Pemphigoid ◽  
Epithelial Basement Membrane ◽  
The Face ◽  
History Of ◽  
The One ◽  
The Right ◽  
High Index Of Suspicion

A 26-year-old Caucasian man with no previous history of chemical injury presenting with an inability to open his right eye was investigated for mucous membrane pemphigoid and treated. Examination was notable for symblepharon of the right eye and impetigo-like lesions on the face and neck. A biopsy with immunohistochemical analysis was significant for linear deposits of C3 and immunoglobulin G at the level of the epithelial basement membrane, confirming the diagnosis of mucous membrane pemphigoid. Although mucous membrane pemphigoid classically presents bilaterally in women in the sixth and seventh decades of life, our patient was a young man with unilateral cicatrising conjunctivitis who may have been easily misdiagnosed without a high index of suspicion. A biopsy is required in cases of cicatrising conjunctivitis so that even atypical cases such as the one presented herein can be appropriately managed.

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