Synthesis of 1H-Cyclopent[cd]indene and its Anion

In connection with studies of 2H-benz[cd]azulene (1) [¹] and the strongly acidic fluoradene (2) [²] particular interest[²⁻⁶] attaches to the parent system of the latter, 2aHcyclopent[cd]indene (3) and its 1 H-isomer (4) as well as to their anion (5) which is isoelectronic with [3.2.2]cy-clazine (6)[³]

Synthese des 1H-Cyclopent[cd]indens und seines Anions

Im Zusammenhang mit Untersuchungen über das 2HBenz[cd]azulen (1) [¹] sowie das hochacide Fluoraden (2)[²] kommt dessen Grundkörper, dem 2aH-Cyclopent[cd]inden (3) und dessen 1H-Isomeren (4) sowie deren Anion (5) , das dem Cycl[3.2.2]azin (6)[³] isoelektronisch ist, besonderes Interesse zu[²-⁶]

Mild psychotic experiences among ethnic minority and majority adolescents and the role of ethnic density

Despite evidence of the increased risk of psychotic disorders among ethnic minority adults, little is known about the effect of ethnic minority status to mild psychotic experiences among adolescents. This study investigated mild psychotic experiences in ethnic minority and majority adolescents in a Dutch representative general population sample, and tested the ethnic density effect in the classroom.The CAPE was used to assess mild psychotic experiences among Dutch (n = 3,606) and non-Western ethnic minority pupils (n = 769).Ethnic minority adolescents showed higher levels of grandiosity and delusions than their ethnic majority peers, whereas no differences were found for hallucinations, paranormal beliefs and paranoia between both groups of adolescents. The ethnic density effect was partly confirmed for the ethnic majority: a decrease of ethnic majority pupils in class increased their feelings of paranoia.Because only some dimensions of mild psychotic experiences were affected by ethnic minority status or the interaction between ethnic minority status and ethnic class composition, our findings emphasize that mild psychotic experiences are multifactorial in origin, with different underlying processes.</p

CONTINUITY OF RESEARCH AND RESEARCH OF CONTINUITY: BASIC RESEARCH ON SETTLEMENT ARCHAEOLOGY OF THE IRON AGE IN THE BALTIC REGION. A NEW LONG-TERM RESEARCH PROJECT BY THE ACADEMY OF SCIENCE AND LITERATURE IN SCHLESWIG AND BERLIN

After several years of successful investigations in former East Prussia (today the Kaliningradskaya Oblast of the Russian Federation) and investigations in neighbouring countries around the Baltic Sea, the Centre for Baltic and Scandinavian Archaeology in Schleswig (ZBSA) in Germany has expanded its research plans for the next 18 years. The application for the project ‘Forschungskontinuität und Kontinuitätsforschung – Siedlungsarchäologische Grundlagenforschung zur Eisenzeit im Baltikum’ (Continuity of Research and Research of Continuity: Basic Research on Settlement Archaeology of the Iron Age in the Baltic Region), submitted in June 2010, was accepted by the Academy of Sciences and Literature in Mainz in December 2011.DOI: http://dx.doi.org/10.15181/ab.v17i0.4

The Coming of Iron in a Comparative Perspective

The paper deals with the introduction of iron as a new raw material in the transition period between the outgoing Bronze Age and the Early Iron Age. Objective of the paper is to introduce the interdisciplinary research group A5: Iron as a new raw material of the Excellence Cluster Topoi. The Formation and Transformation of Space and Knowledge in Ancient Civilizations. After a short overview of the history of the spread of iron technology after the decline of the Hittite empire, the central research categories of the group: space, knowledge, innovation and resource are introduced. The interdisciplinary composition of the group enables the integration of different methodological approaches from the archaeological sciences, ancient oriental studies and physical geography. Furthermore, the spatio-temporal potentials and limitations of the single disciplinary methodological approaches are discussed and a brief overview of the regions under investigation is given. The introduction of iron as a new raw material is in detail presented in the light of two case study regions: the Ancient Orient and the Teltow region

Развитие бизнес-процессов статистического управления качеством на Юргинском машзаводе

Micro-structured and thus functionalized surfaces offer high potentials for new approaches in processing techniques and product design. However, for mass production purposes quite a few challenges regarding the manufacturing of these surfaces have to be overcome. For the fast and economic production of large quantities of structured polymer films the extrusion embossing process is suitable. For embossing microstructures there are special requirements on temperature control because of the double function of the embossing roll. On the one hand the roll is used as an embossing roll with a high surface temperature to improve the embossing accuracy. On the other hand it is used as a cooling roll with a low surface temperature. Only by using variothermal heating systems these contradictory demands on the temperature control can be met. In order to achieve a high quality of the produced micro-structured films an integrative analysis and optimization of the entire process chain is required. This includes the manufacturing of suitable embossing rolls, the development of coating systems and the adaption of the extrusion process. This paper deals with the entire process chain for functionalized, super hydrophobic plastic parts with contact angles up to 165°. Therefore, conelike surface structures, mimicking the structure of lotus leaves, are replicated. Functionalized parts are produced in the injection molding as well as in the extrusion process; however, this paper focuses on the process chain of the extrusion process