Characterisation of antibacterial peptides from the venom of Cupiennius salei (Araneae: Ctenidae). Diplomarbeit am Zoologischen Institut der Universität Bern, 19 S.

The characterisation of the antimicrobial activity of six antibacterial peptides, isolated from the venom of the neotropical wandering spider Cupiennius salei is reported. The peptides have a molecular weight, determined by electrospray ionisation-mass spectrometry, between 3 to 4 kDa, and they consist of approximately 26 to 35 amino acids. All six peptides lack cysteines but they are rich in lysine. Peptide 1 is very closely related to CSTX-4, a known bactericidal and insecticidal toxin from the venom of Cupiennius salei

Parity Violation and the Nucleon-Nucleon System

The status of the field of nuclear parity violation---both experimental and theoretical---is reviewed, with special emphasis on those results which have been obtained since the 1985 review article by Adelberger and Haxton.Comment: 52 page standard Latex file, contribution to the volume "Symmetries in Nuclear Physics," ed. W.C. Haxton and E. Henle

Snow accumulation, firn temperature and solar radiation in the area of the Colle Gnifetti core drilling site (Monte Rosa, Swiss Alps): Distribution patterns and interrelationships

Distributional patterns of glaciological parameters at the Colle Gnifetti core drilling site are described and their interrelationships are brietly discussed. Observations within a stake network established in 1980 furnish information about snow accumulation (short term balance), submergence velocity of ice flow (long term balance), ram hardness (melt layer stratigraphy), and firn temperature. In addition, a numerical model was used to estimate local variations of available radiant energy. Melt layer formation is considerably more intensive on the south facing parts of the firn saddle where incoming radiation is high. These melt layers seem to effectively protect some of the fallen snow from wind erosion. As a result, balance ist up to one order of magnitude larger on south facing slopes. Heat applied to the surface is therefore positively correlated with balance, whereas the relation between solar radiation and firn temperature is less clear. Distributional patterns of submergence velocity confirm that the observed spatial variability of surface balance is representative for longer time periods and greatly influences the time scale and the stratigraphy of firn and ice cores from Colle Gnifetti

Structural variation in Old English root clauses

A standard observation concerning basic constituent order in Old English (OE) is that the position of finite verbs varies by clause type. In root clauses, the finite verb tends to occur toward the beginning of the clause, and we frequently find Verb Second (V2) order. In contrast, in subordinate clauses, finite verbs generally occur toward the end of the clause, and these clauses are frequently verb-final. We challenge the traditional assumption that verb-final orders and, hence, the occurrence of the finite verb in a head-final structural position are rare in OE root clauses. We present new data demonstrating that the frequency of head-final structure in OE root clauses is much higher than previously acknowledged. We then explore some of the implications of this finding for the general structural analysis of O

Clause structure in Old English: evidence from Negative Concord

This paper deals with the clause structure of Old English. In the main body of the paper we adopt the ‘traditional' analysis of the West Germanic languages in which it is proposed that VP is head-final. We will argue (contra Van Kemenade 1987, pace Cardinaletti & Roberts 1991, Pintzuk 1991, Tomaselli 1991) that the clause structure of Old English contains a head-initial functional projection whose head can be the landing site of verb movement in subordinate clauses. This claim is based on evidence related to the distribution and interpretation of negative elements in Old English and West Flemish. We will show that differences between these two languages with respect to Negative Concord phenomena can be accounted for straightforwardly in terms of an Old English clause structure which is different from the one traditionally proposed for the modern Germanic SOV/V2 languages. In the appendix to the paper we briefly turn to the recent alternative approaches to the phrase structure of SOV languages in terms of a universal base hypothesis where all projections are head-initial (see Kayne (1993), Zwart (1993), Roberts (1995) for a discussion of Old English

Direct Simulation of Low-Pressure Supersonic Gas Expansions and its Experimental Verification

The use of gas expansions to generate atomic or molecular beams has become a standard technique in nuclear and hadron physics for the production of polarized ion beams and gas targets. A direct simulation Monte Carlo method was used to understand the processes occurring in an expansion of highly dissociated hydrogen or deuterium gas at low densities. The results were verified in several measurements including time-of-flight and beam-profile determinations which showed that the supersonic gas expansions can properly be described by the Monte Carlo calculations. Additionally a new method of beam formation, the hollow carrier jet, was tested under the conditions of the atomic beam source operation

Taking an ethics of care perspective on two university teacher training programmes

This paper shows the usefulness and interest of taking an ethics of care perspective to evaluate university teacher training programmes. More precisely, in this case study we use the five elements of care identified by Tronto – attentiveness, responsibility, competence, responsiveness and trust – to assess two multiple-day training programmes offered at the University of Geneva. We show how small changes in our practice such as giving some choice to the participants over the topics addressed, adapting the schedule to meet the participants’ constraints or dedicating time slots specifically for the questions and concerns raised by the participants can have a big impact on the level of care provided. We moreover argue that this framework brings interesting and novel elements that appropriately “counterbalances” traditional evaluations that are usually implicitly based on notions such as performance, efficiency and measurability. Finally, we briefly explain how the ethics of care could be used a basis to not only evaluate but to rethink and elaborate training programmes

GIS-based modelling of rock-ice avalanches from Alpine permafrost areas

Changing permafrost conditions caused by present atmospheric warming are expected to affect the stability of steep rock walls in high mountain areas. The possible increase in periglacial slope instabilities and the especially long potential run-out distances in glacial environments require more awareness about the kind of events as well as robust models to foresee areas affected and distances reached. A geographic information system-based flow-routing model is introduced for modelling rock-ice avalanches on a regional scale. The model application to three major historical events in the European Alps shows the basic use for simulating such events for first-order assessments. By designating the path of steepest descent while allowing lateral spreading from the fall track up to 45°, general flow patterns as well as changes in the direction of progression are well reproduced. The run-out distances are determined using empirically based models and suit well the case studies presente