Palystes kreutzmanni sp. n. – a new huntsman spider species from fynbos vegetation in Western Cape Province, South Africa (Araneae, Sparassidae, Palystinae)

Palystes kreutzmanni sp. n. is described from habitats close to Kleinmond, in the Western Cape Province, South Africa. Spiders of this new species live in the typical fynbos vegetation of the Western Cape region. They build retreats between apical leaves of Leucadendron bushes. The systematic position of Palystes kreutzmanni sp. n. is discussed. Male and female show characters of different species groups, especially the female copulatory organ seems to be unique within the genus Palystes L. Koch, 1875

St. Petersburg im Netz der Arachnologen : Bericht vom 21. europäischen Kolloquium der Arachnologie in St. Petersburg, August 2003

Bericht vom 21. europäischen Kolloquium der Arachnologie in St. Petersburg, August 200

Belgisches Bier im Gewächshaus : Bericht vom 16. Internationalen Kongress der Arachnologie in Gent, Belgien, August 2004

Bericht vom 16. Internationalen Kongress der Arachnologie in Gent, Belgien, August 200

VoteLab: A Modular and Adaptive Experimentation Platform for Online Collective Decision Making

Digital democracy and new forms for direct digital participation in policy making gain unprecedented momentum. This is particularly the case for preferential voting methods and decision-support systems designed to promote fairer, more inclusive and legitimate collective decision-making processes in citizens assemblies, participatory budgeting and elections. However, a systematic human experimentation with different voting methods is cumbersome and costly. This paper introduces VoteLab, an open-source and thoroughly-documented platform for modular and adaptive design of voting experiments. It supports to visually and interactively build reusable campaigns with a choice of different voting methods, while voters can easily respond to subscribed voting questions on a smartphone. A proof-of-concept with four voting methods and questions on COVID-19 in an online lab experiment have been used to study the consistency of voting outcomes. It demonstrates the capability of VoteLab to support rigorous experimentation of complex voting scenarios

Stellenwert der FDG-Positronenemissionstomographie in der Beurteilung von tumorösen Raumforderungen bei Silikose

Die Unterscheidung zwischen silikotischer Schwiele und Lungenkarzinom kann häufig bei langjähriger Quarzstaubexposition und Auftreten von silikotischen Veränderungen ein diagnostisches Problem darstellen. Im Rahmen einer retrospektiven Studie sollte die Wertigkeit der Fluorodeoxyglucose-Positronenemissionstomographie (FDG-PET) als neues diagnostisches Verfahren im Tumor-Screening bei dieser Berufsgruppe untersucht werden

Stellenwert der FDG-Positronenemissionstomographie in der Beurteilung von tumorösen Raumforderungen bei Silikose

Die Unterscheidung zwischen silikotischer Schwiele und Lungenkarzinom kann häufig bei langjähriger Quarzstaubexposition und Auftreten von silikotischen Veränderungen ein diagnostisches Problem darstellen. Im Rahmen einer retrospektiven Studie sollte die Wertigkeit der Fluorodeoxyglucose-Positronenemissionstomographie (FDG-PET) als neues diagnostisches Verfahren im Tumor-Screening bei dieser Berufsgruppe untersucht werden

Comparison of Two Different Designs of a Scraped Surface Crystallizer for Desalination Effect and Hydraulic and Thermodynamic Numbers

The design of a desalination plant is most important if the desired product purity has to be as high as possible. This is also true for freeze crystallization plants. A correct solid-to-liquid ratio has to be ensured when pressing is used as a post-treatment. Thus, the dependence of the overall plant design on the achieved ice quality but also on different hydraulic and thermodynamic numbers is important. In this research, a scraped screw crystallizer plant is presented and examined for two different screw designs. Experiments with a low initial concentration, as for the usage to desalinate groundwater to gain it as process water, were conducted. Furthermore, solutions with high initial concentrations simulating seawater to produce potable water were used as another set of test solutions. The findings showed that neither of the screw designs is more favorable than the other, but it is important to have a plant design fitting the existing parameters on site