After Jacobus Henricus van't Hoff had passed away on 1 March 1911, his pupil Charles Marinus van Deventer wrote a very personal ‘in memoriam’ in the Dutch literary periodical De Gids, pointing out that van't Hoff had merely been interested in scientific facts, not in the people discovering these facts. Van't Hoff considered the study of the history of chemistry, although by no means uncongenial, a matter of little importance. He once even said: ‘To me historical research appears to be (...) appropriate for a chemist in the decline of life, when he no longer creates professional ideas, and when the laboratory has become a burden to him’. Although van Deventer had studied physical chemistry at van't Hoff's Amsterdam laboratory and had been his assistant from 1885 until 1893, he disagreed with this verdict. Van Deventer was not only a capable physical chemist, he was also an active member of the Tachtigers, a circle of Dutch poets who around 1880 brought about a renewal in Dutch literature. He took a special interest in Greek philosophy. He did not graduate with van't Hoff, but with his colleague Jan Willem Gunning . His thesis was not based on physical-chemical, but on historical research: Schetsen uit de Geschiedenis van de Scheikunde . From 1922 to 1923 he lectured on the history of chemistry at Utrecht University. His fascinating lectures were published as Grepen uit de Historie der Chemie . This work reveals his particular interest in the development of chemical concepts. (shrink)

Der Sammelband nimmt erstmalig seit Ende des Kalten Krieges für den deutschsprachigen Raum eine komprimierte Bestandsaufnahme der aktuellen Aktivitäten, rechtlichen Rahmenbedingungen, politischen und militärischen Konfliktlinien und Kooperationsräume sowie weiterführender Trends und Herausforderungen im Weltraum vor. Dabei werden zum einen die rechtlichen, militärischen, wirtschaftlichen und technologischen Herausforderungen des Bedeutungszuwachses dieses strategisch gewichtigen Raumes analysiert. Zum anderen werden Handlungsfähigkeit und -bedarf ausgewählter Weltraummächte, ihre Kooperationsmöglichkeiten und Konfliktpotenziale sowie der internationale politische Regulierungsbedarf herausgearbeitet und darauf aufbauend politische Handlungsempfehlungen dargelegt.,,Eine hervorragend gelungene Bestandsaufnahme der (...) umfassenden Bedeutung des Weltraums." Prof. Dr. Dr. h. c. Karl Kaiser, Harvard University Die Herausgeber PD Dr. Antje Nötzold ist Privatdozentin und wissenschaftliche Mitarbeiterin an der Professur Internationale Politik der TU Chemnitz. Dr. Enrico Fels ist Geschäftsführer des Center for Advanced Security, Strategic and Integration Studies (CASSIS) der Rheinischen Friedrich-Wilhelms-Universität Bonn. Andrea Rotter ist Referatsleiterin für Außen- und Sicherheitspolitik bei einer politischen Stiftung. Dr. Moritz Brake ist Senior Fellow am Center for Advanced Security, Strategic and Integration Studies (CASSIS) und Experte für Maritime Sicherheit und Strategie am German Institute for Defence and Strategic Studies (GIDS) als Reserveoffizier der Deutschen Marine. (shrink)

Originally published in 1936, this book presents the ancient Greek text of the paraphrases and quotations of Zeno's philosophical arguments, together with a facing-page English translation and editorial commentary. Detailed notes are incorporated throughout and a bibliography is also included. This book will be of value to anyone with an interest in Zeno and ancient philosophy.

L a distribució n parlamentari a qu e ha n a r rojad o lo s resultado s d e la s pasada s elecciones generale s de l dí a 2 0 d e n o viembre , d e 2011 , h a ocasionado , sobr e tod o po r pa r t e d e la s fo r - macione s política s má s s e v erament e afectadas , tod a un a (...) cascad a d e crítica s a nuestr o sistema electoral , y pa r ticula r ment e sobr e l a fó r mul a idead a po r e l matemátic o belg a Vícto r D’Hont. Lo s distinto s pa r tido s tiende n a un a v aloració n sesgad a e n vi r tu d de l bene f ici o obtenido d e l a fó r mul a el e gid a po r e l L e gislado r e n un a etap a históric a dete r minada . ¿Cóm o afecta l a l e y D’Hon t a l a calida d d e l a democraci a española ? ¿E l pro b lem a resid e e n l a fó r mula D’Hont ? Co n l a f inalida d d e contribui r a l debat e abie r t o sobr e nuestr o sistem a electoral, m e centrar é e n alguna s modi f cacione s d e l a LORE G qu e todo s podría n acepta r , junt o a l a propuest a d e do s modelo s electorales , a cost e cero , d e do b l e pro r rate o y d e aplicación inmediata. (shrink)

1. Amūnīyūs ibn Hirmiyās wa-atharuh fī falsafat al-Farābī = Ammonius son of Hermias and his influence on the philosophy of Al-Farabi--2. Simbilīlīkūs wa-atharuh fī mītāfīzīqā Ibn Sīnā = Simplicius and his influence on Avicenna's metaphysics.

Receptor‐mediated stimulation induces massive actin polymerization and cyto‐skeletal reorganization. The activity of a potent actin‐modulating protein, gelsolin, is regulated both by Ca2+ and polyphos‐phoinositides, and it may have a pivotal role in restructuring the actin cytoskeleton in response to agonist stimulation. Structure‐function analysis of gelsolin has (1) indicated that its NH2‐terminal half is primarily responsible for modulating actin filament length and polymerization; and (2) elucidated mechanisms by which Ca2+ and phospholipids may regulate such functions. Gelsolin is functionally and structurally similar (...) to villin, another Ca2+‐activated actin‐severing protein found in microvilli, suggesting that gelsolin may be a prototype of this family of actin‐modulating proteins. A molecular variant of gelsolin is secreted and may be involved in the clearance of actin filaments released during tissue damage. The two forms of gelsolin are encoded by a single gene, and distinct messages are derived by alternative message splicing. (shrink)

Commentators are divided on the interpretation of Metaphysics Z4 1029b13–22. For one thing, it is unclear whether the passage rejects a claim about the essence of surface, or about the essence of pale. It is usually thought that the claim is disavowed because it involves a circular definition. However, this is conjectural, since Aristotle does not explicitly say anything about circularity in the lines in question. I argue here for an alternative account, which reads the disputed lines as an extension (...) of the immediately preceding remarks. If correct, this also solves the problem as to just what Aristotle is denying. As will emerge, my story is helped by St. Thomas’ reading of lines 21–22, an account that has been curiously ignored in the recent literature. (shrink)

A part of relativistic dynamics is axiomatized by simple and purely geometrical axioms formulated within first-order logic. A geometrical proof of the formula connecting relativistic and rest masses of bodies is presented, leading up to a geometric explanation of Einstein's famous E = mc² . The connection of our geometrical axioms and the usual axioms on the conservation of mass, momentum and four-momentum is also investigated.