Antecedents of Counterproductive Behavior at Work: A General Perspective.

Counterproductive work behaviors have predominantly been investigated at relatively narrow levels, with the focus limited to subsets of the behavioral domain as well as to specific explanatory approaches. This study took a broader perspective with respect to both dependent and independent variables. A sample of German employees from 2 organizations reported on their levels of general counterproductive behavior (GCB). In predicting GCB, M. R. Gottfredson and T. Hirschi's (1990) theory of self-control as a general explanation for deviant acts was tested and compared with several alternative approaches. Results from simple and moderated hierarchical multiple regression analyses involving 24 predictors of GCB strongly support hypotheses derived from self-control theory. Little support is found for any effects on individual differences in GCB beyond the direct and conditional impact of internal control. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A multivariate optimization of triacylglycerol analysis by high-performance liquid chromatography

The online version of the original article can be found at     

Die NH-Bestimmung – Möglichkeit zur getrennten Erfassung von gelöstem Stickstoff und unterschiedlichen Nitriden in Stählen

Weiterentwickeltes Verfahren zur Heißextraktion von Stahlspänen mit Wasserstoff (N_H-Bestimmung) und Anwendung bei der Untersuchung stickstoffhaltiger Phasen in niedriglegierten Chrom- und Chrom-Vanadium-Stählen. Mit Hilfe einer automatisierten Apparatur Bestimmung der Menge des gelösten Stickstoffs und des Anteils der jeweils vorhandenen Nitride.     

The dynamics of innovations and development in catalyst based technologies. Catalytic reforming,cracking, and ammonia production

It is proposed that major progress in catalysis occurs in the step-wise manner. Breakthroughs which revolutionize technology occur every five to ten years. After such a breakthrough there are extended periods during which fundamental research investigating the underlying phenomena leads to better understanding and gradual improvements of the new technology. During such periods it may appear that a field or even the whole of catalytic technology is relatively mature. This is, however, a misconception because history teaches us that fields which appear mature are suddenly revitalized by a major new discovery. This is illustrated with three case histories.     

Direct evaluation of fluorescence in single renal epithelial cells using a mitochondrial probe (DASPMI)

The study of distribution and quantitation of a fluorescent probe in living epithelia with the aid of an inverted microscope requires that individual cells can be analysed without optical interference from adjacent cells. This report describes the application of fluorescence microscopy and fluorometry to a recently developed in vitro culture system of renal epithelial cells. Epithelial cells derived from the mammalian renal cortical collecting tubule (CT) and the thick ascending loop of Henle (TAL) are cultivated as continuous monolayers in serum-free, hormone-supplemented media. A specific mitochondrial marker (DASPMI) is added to the medium and incorporated into the cytoplasm. The microscopic image reveals that the mitochondrial fluorescence distribution differs between CT and TAL cultures. The fluorometric quantitation shows a normally distributed histogram of medium-range intensity in TAL cell cultures while CT cultures exhibit a two-peak pattern of mitochondrial fluorescence distribution among epithelial cells.