Über die Erregungsvorgänge bei Seismonastischen Bewegungen

Ohne ZusammenfassungMit 6 Textabbildungen.     

Cerebral vein thrombosis: clinical manifestation and diagnosis

Background  

Cerebral venous thrombosis (CVT) is a disease with a wide spectrum of symptoms and severity. In this study we analysed the predictive value of clinical signs and symptoms and the contribution of D-dimer measurements for diagnosis.     

Intermarriage and Jewish identity: The implications for pluralism and assimilation in American society*

Born across racial lines, Cedric Dover and Barack Obama both came to identify with the African American community. By contrasting the lives and ideas of two mixed-race individuals, one born in Calcutta and the other in Hawaii, this article examines cosmopolitanism, racial formation and the promise of the ‘post-racial’. A ‘Eurasian’ intellectual born in Calcutta in 1904, Dover developed a coloured cosmopolitanism that mirrors in revealing ways Obama's approach to race. Both men embraced blackness while transcending the boundaries of race and nation. Dover and Obama developed a conception of race as freedom – not freedom from race or of a particular race, but the freedom to embrace race without sacrificing other affiliations.     

Methodology and Indicators of Economy‐wide Material Flow Accounting

This contribution presents the state of the art of economy‐wide material flow accounting. Starting from a brief recollection of the intellectual and policy history of this approach, we outline system definition, key methodological assumptions, and derived indicators. The next section makes an effort to establish data reliability and uncertainty for a number of existing multinational (European and global) material flow accounting (MFA) data compilations and discusses sources of inconsistencies and variations for some indicators and trends. The results show that the methodology has reached a certain maturity: Coefficients of variation between databases lie in the range of 10% to 20%, and correlations between databases across countries amount to an average R² of 0.95. After discussing some of the research frontiers for further methodological development, we conclude that the material flow accounting framework and the data generated have reached a maturity that warrants material flow indicators to complement traditional economic and demographic information in providing a sound basis for discussing national and international policies for sustainable resource use.     

Supported organometallic complexes. Part 27: novel sol-gel processed rhodium(I) complexes: synthesis, characterization, and catalytic reactions in interphases

A novel T-silyl functionalized cationic (COD)(dppp)rhodium(I) complex was sol-gel processed with various amounts of the co-condensing agents MeSi(OMe)₂(CH₂)₆(OMe)₂SiMe and MeSi(OMe)₂(CH₂)₃(C₆H₄)(CH₂)₃(OMe)₂SiMe to give novel stationary phases for ‘Chemistry in Interphases’. The polysiloxane matrices and the integrity of the rhodium(I) complex centers were investigated by means of multinuclear solid-state NMR (¹³C, ²⁹Si, ³¹P) and EXAFS spectroscopies. Dynamic NMR measurements show an increasing mobility of the matrix and the reactive centers with a higher amount of the co-condensing component. The accessibility of the anchored rhodium(I) centers was scrutinized by the metal catalyzed hydrogenation of 1-hexene. All applied xerogels show remarkable activities and selectivities. An enhancement of the activities is achieved when polar solvents are used. SEM micrographs reveal the morphology of the hybrid materials and energy dispersive X-ray spectroscopy (EDX) suggests that the distribution of the elements is in satisfying agreement with the applied composition.     

Synthesis and biological activity of galanthamine derivatives as acetylcholinesterase (AChE) inhibitors

The syntheses of several ester and carbamate derivatives of galanthamine are described. These compounds are potential therapeutic agents in the treatment of Alzheimer's disease (AD). The inhibition of cortical acetylcholinesterase (AChE) by these drug candidates with different side chains was investigated. Side chain length as well as branching affected the AChE inhibitory activity. Esters were generally less effective than carbamates.