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Digitale Medien

Informal contacts and performance in innovation teams (2005)

Kratzer, J. ; Leenders, Roger Th.A.J. ; Engelen, Jo M.L. Van

Bingley : Emerald

International journal of manpower 26 (2005), S. 513-528

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ISSN: 0143-7720

Quelle: Emerald Fulltext Archive Database 1994-2005

Thema: Wirtschaftswissenschaften

Notizen: Purpose - The paper addresses the effect friendly and friendship relationships among members of innovation teams on the performance of the teams. Design/methodology/approach - The members of innovation teams may develop friendly and friendship relationships over time. In our study, we focus on the effect of the frequency of such non-work relationships on team performance. For this research, we collected full network data on non-work relationships in a sample of 44 innovation teams and investigate how these "friendly and friendship networks" affect the performance of innovation teams. Findings - As result turns out that the frequency of friendly ties has positive as well as negative consequences on team performance, whereas the frequency of friendship ties positively relates to the performance. Research limitations/implications - The results indicate the importance of informal relations for the performance of innovation teams. Further, it is shown that friendly and friendship relations have different theoretical and practical implications. Future research can overcome the limitations of the presented research by concentrating on larger sample sizes and longitudinal research designs. Practical implications - Building on the results of the study managers can better orchestra innovation teams focussing not only on formal but also on informal contacts. The main practical implication is to strive for friendship contacts and to avoid too strong friendly contacts. Originality/value - The study adds knowledge to the research on informal relationships and performance two-fold. First, the findings testify that friendly and friendship contacts are different and not part of the same dimension, and there is strong evidence for the importance of informal contacts.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1108/01437720510625430

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2

Digitale Medien

PKA and Sch9 control a molecular switch important for the proper adaptation to nutrient availability (2005)

Roosen, Johnny ; Engelen, Kristof ; Marchal, Kathleen ; [weitere]

Oxford, UK : Blackwell Science Ltd

Molecular microbiology 55 (2005), S. 0

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ISSN: 1365-2958

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Biologie , Medizin

Notizen: In the yeast Saccharomyces cerevisiae, PKA and Sch9 exert similar physiological roles in response to nutrient availability. However, their functional redundancy complicates to distinguish properly the target genes for both kinases. In this article, we analysed different phenotypic read-outs. The data unequivocally showed that both kinases act through separate signalling cascades. In addition, genome-wide expression analysis under conditions and with strains in which either PKA and/or Sch9 signalling was specifically affected, demonstrated that both kinases synergistically or oppositely regulate given gene targets. Unlike PKA, which negatively regulates stress-responsive element (STRE)- and post-diauxic shift (PDS)-driven gene expression, Sch9 appears to exert additional positive control on the Rim15-effector Gis1 to regulate PDS-driven gene expression. The data presented are consistent with a cyclic AMP (cAMP)-gating phenomenon recognized in higher eukaryotes consisting of a main gatekeeper, the protein kinase PKA, switching on or off the activities and signals transmitted through primary pathways such as, in case of yeast, the Sch9-controlled signalling route. This mechanism allows fine-tuning various nutritional responses in yeast cells, allowing them to adapt metabolism and growth appropriately.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1365-2958.2004.04429.x

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3

Digitale Medien

Effect of petrochemical sludge concentrations on microbial communities during soil bioremediation (2005)

Panno, María T. ; Morelli, Irma S. ; Engelen, Bert ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

FEMS microbiology ecology 53 (2005), S. 0

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ISSN: 1574-6941

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Biologie

Notizen: Qualitative and quantitative changes of microbial communities in soil microcosms during bioremediation were determined throughout one year. The soil was contaminated with 0%, 2.5%, 5%, 10% (wt/wt) of petrochemical sludge containing polynuclear aromatic hydrocarbons. We analyzed the hydrocarbon concentration in the microcosms, the number of cultivable bacteria using CFU and most probable number assays, the community structure using denaturing gradient gel electrophoresis, and the metabolic activity of soil using dehydrogenase activity and substrate-induced respiration assays. After one year of treatment, the chemical analysis suggested that the hydrocarbon elimination process was over. The biological analysis, however, showed that the contaminated microcosms suffered under long-term disturbance. The number of heterotrophic bacteria that increased after sludge addition (up to 108–109 cells ml−1) has not returned to the level of the control soil (2–6 × 107 cells ml−1). The community structure in the contaminated soils differed considerably from that in the control. The substrate-induced respiration of the contaminated soils was significantly lower (10-fold) and the dehydrogenase activity was significantly higher (20–40-fold) compared to the control. Changes in the community structure of soils depended on the amount of added sludge. The species, which were predominant in the sludge community, could not be detected in the contaminated soils.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1016/j.femsec.2005.01.014

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4

Digitale Medien

Beiträge zur Chemie des Schwefels. CXVII. Kristall- und Molekülstruktur von 7,8,9,16,17,18-Hexathiadispirol[5.3.5.3]octadecan (1979)

Fehér, F. ; Engelen, B.

Copenhagen : International Union of Crystallography (IUCr)

Acta crystallographica 35 (1979), S. 1853-1857

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ISSN: 1600-5740

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0567740879007901

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5

Digitale Medien

Het eisenacher (katheder-socialistisch) congres (1873)

Engelen, D. O.

Springer

De economist 22 (1873), S. 459-487

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ISSN: 1572-9982

Quelle: Springer Online Journal Archives 1860-2000

Thema: Wirtschaftswissenschaften

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02183330

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6

Digitale Medien

Het Eisenacher (Katheder-Socialistisch) Congres (1873)

Engelen, D. O.

Springer

De economist 22 (1873), S. 321-338

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ISSN: 1572-9982

Quelle: Springer Online Journal Archives 1860-2000

Thema: Wirtschaftswissenschaften

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02183323

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7

Digitale Medien

Beiträge zur Chemie des Schwefels. 115. Kristall- und MolekülStruktur von BenzopentathiepinProfessor Günther Rienäcker gewidmet (1979)

Fehér, F. ; Engelen, B.

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 452 (1979), S. 37-42

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ISSN: 0044-2313

Schlagwort(e): Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Contributions to the Chemistry of Sulfur. 115. Crystal and Molecular Structure of BenzopentathiepineThe structure of benzopentathiepine has been determined from three-dimensional single-crystal X-ray data. The crystal are monoclinic, space group P21/c, with 4 molecules in the unit cell of dimensions a = 6.942(4) Å, b = 10.223(10) Å, c = 13.015(8) Å, β = 102,15(10)°. The conformation of the seven-membered ring is the chair form. Details of the conformation are discussed. Bond distances, bond angles, and dihedral angles are compared with those in other molecules, which have similar structure.

Notizen: Die Struktur von Benzopentathiepin wurde aus Einkristalldaten röntgenographisch bestimmt. Die Kristalle sind monoklin, Raumgruppe P21/c, mit 4 Molekeln in der Elementarzelle. Die Gitterkonstanten sind: a = 6,942(4) Å, b = 10,223(10) Å, c = 13,015(8) Å, β = 102,15(10)°. Der siebengliedrige Ring liegt in der Sesselkonformation vor. Einzelheiten der Konformation werden diskutiert. Bindungslängen und -winkel sowie die Diederwinkel werden mit denen anderer Molekeln ähnlicher Struktur verglichen.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/zaac.19794520106

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8

Digitale Medien

Zur Kenntnis der Hydrate des Bariumchlorids. Röntgenographische, thermoanalytische, Raman- und IR-spektroskopische Untersuchungen (1979)

Lutz, H. D. ; Becker, W. ; Mertins, Ch. ; [weitere]

Weinheim : Wiley-Blackwell

Zeitschrift für anorganische Chemie 457 (1979), S. 84-90

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ISSN: 0044-2313

Schlagwort(e): Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Beschreibung / Inhaltsverzeichnis: Hydrates of Barium Chloride. X-ray, Thermoanalytical, Raman, and I.R. DataIn the system BaCl2—H2O the hydrates BaCl2 · 2 H2O, BaCl2 · 1 H2O, BaCl2 · 1/2 H2O, and BaCl2 · uH2O were obtained. X-ray powder data, i.r. and Raman spectra, as well as thermoanalytical measurements (TG, DTA) are reported. BaCl2 · 1 H2O and BaCl2 · 1/2 H2O, which are both isotype with the corresponding hydrates of SrCl2, were prepared by dehydration of BaCl2 · 2 H2O or by back hydration of anhydrous BaCl2 with the calculated amounts of water. BaCl2 · uH2O (u ≍ 1) is formed as the primary product by the reaction of anhydrous BaCl2 with water vapour at room temperature. Preparation methods of salt hydrates by controlled back hydration of the anhydrous salts are reported.

Notizen: Im System BaCl2—H2O wurden folgende Hydrate erhalten: BaCl2 · 2 H2O, BaCl2 · 1 H2O, BaCl2 · 1/2 H2O und BaCl2 · uH2O. Röntgenpulverdaten, IR- und Raman-Spektren sowie das Ergebnis thermoanalytischer Messungen (TG, DTA) werden mitgeteilt. BaCl2 · 1 H2O und BaCl2 · 1/2 H2O, die mit den entsprechenden Hydraten des SrCl2 isotyp sind, werden beim Entwässern von BaCl2 · 2 H2O oder durch Umsetzen von wasserfreiem BaCl2 mit der berechneten Menge Wasser erhalten. BaCl2 · uH2O (u ≍ 1) bildet sich als primäres Reaktionsprodukt bei der Umsetzung von wasserfreiem BaCl2 mit Wasserdampf bei Raumtemperatur. Die Darstellung phasenreiner niederer Salzhydrate durch kontrollierte Rückbewässerung der wasserfreien Salze wird beschrieben.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/zaac.19794570109

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