Poly-1,2-azepine and method of producing a film thereof on a substrate

Gas-phase photopolymerisation of phenylazides results in a new type of polymer, a poly-1,2-azepine. This polymer can be provided on a substrate according to a predetermined pattern by exposing it via a mask. After oxidation an electrically conductive polymer is obtained

Poly-1,2-azepine, method of producing a film of such a polymer on a substrate and a substrate provided with such a polymer

Gas-phase photopolymerisation of phenylazides results in a new type of polymer, a poly-1,2-azepine. This polymer can be provided on a substrate according to a predetermined pattern by exposing it via a mask. After oxidation an electrically conductive polymer is obtained

Erratum: (2x1)-(1x1) Phase Transition on Ge(001): Dimer Breakup and Surface Roughening [Phys. Rev. Lett. 91, 116102 (2003)]

Using low energy electron microscopy, we have investigated the (2×1)-(1×1) phase transition occurring above 925 K on Ge(001). Dimer breakup has been identified as the physical origin of this transition. A quantitative description of the dimer concentration during the transition involves configuration entropy of random monomers within the dimer matrix. The dimer formation energy amounts to 1.2±0.3  eV. Dimer breakup promotes reversible surface disorder by step proliferation and irreversible surface roughening above 1130 K

Abdominal packing for surgically uncontrollable hemorrhage in ruptured abdominal aortic aneurysm repair

AbstractEmergency surgery for ruptured abdominal aortic aneurysms is accompanied with massive blood loss and is correlated with high incidences of coagulopathy. Following established results with abdominal packing to control hepatic hemorrhage, we present this technique for uncontrollable hemorrhage in patients with ruptured abdominal aortic aneurysm. The experience with this technique in 46 patients is described. (J Vasc Surg 2001;33:195-6.

Alloying, de-alloying and reentrant alloying in (sub-)monolayer growth of Ag on Pt(111)

An in-situ nanoscopic investigation of the prototypical surface alloying system Ag/Pt(111) is reported. The morphology and the structure of the ultrathin Ag-Pt film is studied using Low Energy Electron Microscopy during growth at about 800 K. An amazingly rich dynamic behaviour is uncovered in which stress relieve plays a governing role. Initial growth leads to surface alloying with prolonged and retarded nucleation of ad-islands. Beyond 50% coverage de-alloying proceeds, joined by partial segregation of Pt towards the centre of large islands in violent processes. Upon coalescence the irregularly shaped vacancy clusters are filled by segregating Pt, which then take a compact shape (black spots). As a result at around 85% coverage the strain of the initially pseudo-morphological film is almost completely relieved and Pt-segregation is at its maximum. Further deposition of Ag leads to transient re-entrant alloying and recovery of the pseudo-morphological layer. The black spots persist even in/on several layers thick films. Ex-situ atomic force microscopy data confirm that these are constituted by probably amorphous Pt(-rich) structures. The (sub-)monolayer films are very much heterogeneous

De semantiek van Aristoteles: waarheid en betekenis in het tijdperk van het darwinisme

The leading argument of this doctoral thesis is that Aristotle’s text [De Interpretatione] is of methodical relevance for present-day philosophical thinking. In the era of science and technology, the status of philosophy has become problematic. The philosophical questions of old have been either debunked as grammatical misconceptions or reformulated and incorporated into modern scientific enquiry.Given this situation, the aim of this doctoral thesis is twofold. It purports to show that the problematic status of philosophy can be traced back to Aristotle’s [De Interpretatione]. In addition, it shows that this text also contains clues to truth of a more fundamental nature that is not restricted to propositional correctness, thereby opening up the possibility of a transformed way of philosophical thinking.Philosophy of Knowledge and Cognitio