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Die rund 60.000 Unternehmen der Branche Speditionslogistik in Deutschland sind in vielfaltiger Weise vom digitalen Wandel betroffen. Sowohl die Geschafts- wie auch die Arbeitsprozesse andern sich rapide vor dem Hintergrund von verfugbaren 4.0-Technologien. Die Branche ist geradezu pradestiniert fur die Anwendung vielfaltiger Vernetzungstechnologien („cyber-physische Systeme“), die zum Beispiel Echtzeitdaten aus dem Guterverkehr unter Nutzung intelligenter Ladungstrager mit Kunden- und Prozessdaten aus der Lieferkette verknupfen, damit die Lieferqualitat verbessern und neue (digitale) Serviceleistungen im Verhaltnis zu den Kunden ermoglichen. Bei der Zukunftsorientierung geht es im Kern um Masnahmen der Personalentwicklung der Fach- und Fuhrungskrafte. Die Fallstudie beschreibt den Weg eines mittelstandischen Speditionsunternehmens sowie Erfolgsgrosen im Kompetenzmanagement mit Blick auf die digitale Transformation.

Ein niedriger Energieverbrauch elektrischer Antriebe ist eine wichtige Zielgröße in vielen Anwendungsbereichen. Dabei geraten auch die Wälzlager in den Fokus. Eine neue Baureihe von reibungsoptimierten Rillenkugellagern zeichnet sich durch eine um bis zu 79% verringerte interne Reibung aus. Das hat positive Auswirkungen auf die Effizienz des Elektroantriebs.

1. Recent studies have demonstrated the existence of positive density dependence in the survival and development of Drosophila (the so-called Allee effect); however the underlying mechanisms of such Allee effects have remained elusive. Competition with filamentous fungi have often been suggested to be involved in causing high mortality at low larval density, but it has not yet been explicitly tested if the well known spatial aggregation of insect eggs yields a fitness benefit for the developing larvae in the presence of noxious moulds. 2. Using Drosophila melanogaster, the present study tested whether larval survival is greater in aggregations when confronted with various combinations of three representative mould species (Aspergillus, Alternaria, and Penicillium) and a head start for fungal development. 3. High rates of fungal-dependent mortality and significant positive density-dependent larval survival (i.e. Allee effects) were observed when larvae were confronted with food resources containing established colonies of Aspergillus or Alternaria. Neither the simultaneous transfer of Aspergillus or Alternaria spores with larvae to food patches nor food infections with Penicillium affected insect larval development. 4. Significant correlations between mould growth and larval survival could be identified, although the patterns that emerged were shown to be inconsistent when the effects were compared between fungal species and fungal priority. Because mould growth only partly explained larval survival, the influence of other fungal-borne factors, e.g. mycotoxins, needs to be elucidated in order to understand the mechanistic basis of insect-mould interactions. 5. These results are the first to argue convincingly for moulds being involved in mediating Allee effects for insects on ephemeral resources; however they also demonstrate an unexpected diversity in insect-mould interactions. Considering this diversity may be important in understanding insect spatial ecology.

An der Förderung der Berufsausbildung für Jugendliche mit schlechten Startchancen arbeiten unterschiedliche Berufsgruppen in unterschiedlichen Institutionen. Obwohl dieser Bildungsbereich seit dreißig Jahren wächst, sind die Ausbildungsmöglichkeiten bzw. die Studienangebote für eine Berufstätigkeit in diesem Bereich unzureichend geblieben. Die Autoren sehen die Ursachen dafür in schlechten Professionalisierungsbedingungen und entwickeln Lösungsansätze für eine verbesserte Kooperation und Qualifikation in der Benachteiligtenförderung. Für alle Berufsgruppen, die in der beruflichen Benachteiligtenförderung arbeiten, ist es eine Handreichung für die gemeinsame Reflexion ihrer Praxis.

The frequently applied procedure to remove mercury from process streams utilizes adsorption on a fixed bed consisting of sulfur impregnated activated carbon. This paper deals with results of two-year experience in practical field application, showing efficiency of activated carbon in removal of mercury from natural gas streams. The purpose of undertaken research was to define the correlation between adsorbent's properties and efficiency for this particular application. The final step would then be design, production and utilization of an adsorbent with optimal propreties.

Kastela Bay is located at the eastern Adriatic coast of Croatia. Mercury was constantly introduced into the eastern part of the Bay since the opening of a chlor-alkaline plant in 1949 until 1990 when the plant was closed. The estimated influx of mercury to the Bay from 1949 to 1990 was about 200 000 kg. The environmental relaxation of Kastela Bay with respect to mercury was examined by the record of total mercuryconcentrations in sediment cores in 1987 and again in 1994. Total mercury values were obtained by digestion with HNO3 and H2SO4, reduction with SnCl2, and single-stage gold amalgamation/CVAFS for sediment studied. The accuracy of the results was also checked by the analysis of sediment reference material IAEA-356, certified for total mercury. The latest results for surface sediment of Kastela Bay (1994) show a considerable decrease in total mercury concentrations at the station in the vicinity of chlor-alkali plant compared to 1987 data. Unfortunately, results for other bay stations(significant increase of total mercury in surface sediment in relation to 1987) point to the fact that mercury has only spreaded all over the bay and has not been removed. Spreading of mercury throughout the bay is probably due to wave induced currents or bioturbation. Apart from surface spreading of mercury in the bay sediment, variations of totoal mercury with different depts of sediment in the vicinity of chlor-alkali plant were also studied. In general, the curve of mercury-depth profile showed a rapid decrease (from 6.9 ppm Hg in surface sediment to 0.4 ppm in 20 cm sediment depth).