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  • 1
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    Friction anisotropy and asymmetry of a compliant monolayer induced by a small molecular tilt (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-04-29
    Description: Lateral force microscopy in the wearless regime was used to study the friction behavior of a lipid monolayer on mica. In the monolayer, condensed domains with long-range orientational order of the lipid molecules were present. The domains revealed unexpectedly strong friction anisotropies and non-negligible friction asymmetries. The angular dependency of these effects correlated well with the tilt direction of the alkyl chains of the monolayer, as determined by electron diffraction and Brewster angle microscopy. The molecular tilt causing these frictional effects was less than 15 degrees, demonstrating that even small molecular tilts can make a major contribution to friction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liley -- Gourdon -- Stamou -- Meseth -- Fischer -- Lautz -- Stahlberg -- Vogel -- Burnham -- Duschl -- New York, N.Y. -- Science. 1998 Apr 10;280(5361):273-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉M. Liley, D. Stamou, U. Meseth, H. Vogel, C. Duschl, Department of Chemistry, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland. D. Gourdon and N. A. Burnham, Department of Physics, Swiss Federal Institute of Technology, CH-1015.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9535654" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Invasive harlequin ladybird carries biological weapons against native competitors (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-05-21
    Description: Invasive species that proliferate after colonizing new habitats have a negative environmental and economic impact. The reason why some species become successful invaders, whereas others, even closely related species, remain noninvasive is often unclear. The harlequin ladybird Harmonia axyridis, introduced for biological pest control, has become an invader that is outcompeting indigenous ladybird species in many countries. Here, we show that Harmonia carries abundant spores of obligate parasitic microsporidia closely related to Nosema thompsoni. These microsporidia, while not harming the carrier Harmonia, are lethal pathogens for the native ladybird Coccinella septempunctata. We propose that intraguild predation, representing a major selective force among competing ladybird species, causes the infection and ultimate death of native ladybirds when they feed on microsporidia-contaminated Harmonia eggs or larvae.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vilcinskas, Andreas -- Stoecker, Kilian -- Schmidtberg, Henrike -- Rohrich, Christian R -- Vogel, Heiko -- New York, N.Y. -- Science. 2013 May 17;340(6134):862-3. doi: 10.1126/science.1234032.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Phytopathology and Applied Zoology, Heinrich-Buff-Ring 26-32, Justus-Liebig-University of Giessen, D-35392 Giessen, Germany. andreas.vilcinskas@agrar.uni-giessen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23687046" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beetles/*parasitology/*physiology ; *Food Chain ; Hemocytes/parasitology ; Hemolymph/parasitology ; *Introduced Species ; Nosema/*physiology/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Neuronal activity promotes oligodendrogenesis and adaptive myelination in the mammalian brain (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-04-15
    Description: Myelination of the central nervous system requires the generation of functionally mature oligodendrocytes from oligodendrocyte precursor cells (OPCs). Electrically active neurons may influence OPC function and selectively instruct myelination of an active neural circuit. In this work, we use optogenetic stimulation of the premotor cortex in awake, behaving mice to demonstrate that neuronal activity elicits a mitogenic response of neural progenitor cells and OPCs, promotes oligodendrogenesis, and increases myelination within the deep layers of the premotor cortex and subcortical white matter. We further show that this neuronal activity-regulated oligodendrogenesis and myelination is associated with improved motor function of the corresponding limb. Oligodendrogenesis and myelination appear necessary for the observed functional improvement, as epigenetic blockade of oligodendrocyte differentiation and myelin changes prevents the activity-regulated behavioral improvement.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096908/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096908/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibson, Erin M -- Purger, David -- Mount, Christopher W -- Goldstein, Andrea K -- Lin, Grant L -- Wood, Lauren S -- Inema, Ingrid -- Miller, Sarah E -- Bieri, Gregor -- Zuchero, J Bradley -- Barres, Ben A -- Woo, Pamelyn J -- Vogel, Hannes -- Monje, Michelle -- 1S10RR02678001/RR/NCRR NIH HHS/ -- K08 NS070926/NS/NINDS NIH HHS/ -- K08NS070926/NS/NINDS NIH HHS/ -- R01 EY10257/EY/NEI NIH HHS/ -- T32 MH020016/MH/NIMH NIH HHS/ -- UL1 RR025744/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2014 May 2;344(6183):1252304. doi: 10.1126/science.1252304. Epub 2014 Apr 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Neurology, Neurosurgery, and Pediatrics, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24727982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Thy-1/genetics ; Behavior, Animal/physiology ; *Cell Differentiation ; Cell Lineage ; Cell Proliferation ; Corpus Callosum/cytology/physiology ; Mice ; Mice, Mutant Strains ; Motor Activity/physiology ; Motor Cortex/cytology/*physiology ; Myelin Sheath/*metabolism ; Nerve Fibers, Myelinated/*metabolism ; Neural Stem Cells/*physiology ; Neurons/*physiology ; Oligodendroglia/*cytology ; Rhodopsin/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Wagnerian genetics (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-01-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vogel, H -- New York, N.Y. -- Science. 1995 Jan 27;267(5197):437.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824939" target="_blank"〉PubMed〈/a〉
    Keywords: *Aggression ; Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/deficiency/genetics ; *Drama ; *Fear ; Humans ; *Literature, Modern ; Male ; Mice ; Mice, Knockout
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    2.8 million years of Arctic climate change from Lake El'gygytgyn, NE Russia (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-06-23
    Description: The reliability of Arctic climate predictions is currently hampered by insufficient knowledge of natural climate variability in the past. A sediment core from Lake El'gygytgyn in northeastern (NE) Russia provides a continuous, high-resolution record from the Arctic, spanning the past 2.8 million years. This core reveals numerous "super interglacials" during the Quaternary; for marine benthic isotope stages (MIS) 11c and 31, maximum summer temperatures and annual precipitation values are ~4 degrees to 5 degrees C and ~300 millimeters higher than those of MIS 1 and 5e. Climate simulations show that these extreme warm conditions are difficult to explain with greenhouse gas and astronomical forcing alone, implying the importance of amplifying feedbacks and far field influences. The timing of Arctic warming relative to West Antarctic Ice Sheet retreats implies strong interhemispheric climate connectivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Melles, Martin -- Brigham-Grette, Julie -- Minyuk, Pavel S -- Nowaczyk, Norbert R -- Wennrich, Volker -- DeConto, Robert M -- Anderson, Patricia M -- Andreev, Andrei A -- Coletti, Anthony -- Cook, Timothy L -- Haltia-Hovi, Eeva -- Kukkonen, Maaret -- Lozhkin, Anatoli V -- Rosen, Peter -- Tarasov, Pavel -- Vogel, Hendrik -- Wagner, Bernd -- New York, N.Y. -- Science. 2012 Jul 20;337(6092):315-20. doi: 10.1126/science.1222135. Epub 2012 Jun 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Geology and Mineralogy, University of Cologne, Zuelpicher Strasse 49a, D-50674 Cologne, Germany. mmelles@uni-koeln.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22722254" target="_blank"〉PubMed〈/a〉
    Keywords: Arctic Regions ; *Climate Change ; *Cold Climate ; Geologic Sediments ; Ice Cover ; *Lakes ; Radiometric Dating ; Russia ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Response to comments on "Invasive harlequin ladybird carries biological weapons against native competitors" (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-09-21
    Description: Comments by de Jong et al., Solter et al., and Sloggett question the ecological relevance of the abundant microsporidia found in the invasive ladybird Harmonia axyridis. We contend that there is abundant evidence that native ladybirds feed on H. axyridis eggs and that interspecific microsporidial transfer is a common phenomenon, supporting the proposed role of these parasites as biological weapons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vilcinskas, Andreas -- Stoecker, Kilian -- Schmidtberg, Henrike -- Rohrich, Christian R -- Vogel, Heiko -- New York, N.Y. -- Science. 2013 Sep 20;341(6152):1342. doi: 10.1126/science.1242484.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Phytopathology and Applied Zoology, Heinrich-Buff-Ring 26-32, Justus-Liebig-University of Giessen, D-35392 Giessen, Germany. andreas.vilcinskas@agrar.uni-giessen.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24052293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beetles/*parasitology/*physiology ; *Food Chain ; *Introduced Species ; Nosema/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
    Electronic Resource
    Electronic Resource
    Über das Anlagerungsvermögen von Salicylaldehydiminokomplexen des Nickels und Kupfers. II (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 388 (1972), S. 113-124 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A lot of nickel and copper complexes of Schiff bases were prepared and investigated for their solubility behaviour. Amine components and aldehyde components used see „Inhaltsübersicht„.As far as investigated, the solubility of those compounds containing 4. and 5. is poor in most solvents, but it is better in pyridine. N.N′-pentamethylene-bis(salicylideneiminato)-nickel(II) is trimeric in pyridine. The copper and nickel salts containing the bulky amines 7.,8. and 9. are oligomeric (n = 2 to n = 5) in bromoform and pyridine. The salts containing 11. are monomeric in pyridine. With Stuart models it is possible to construct dimers containing 7. and 9. as amine components having square planar configuration around the metal atom. With strongly distorted tetrahedral configuration it is possible to obtain monomers. With 17., completely insoluble high polymeric compounds were obtained, whereas with 12. oligomers are found.
    Notes: Es wurde eine große Anzahl von Ni- und Cu-Komplexen mit Schiffschen Basen dargestellt und auf ihr Lösungsverhalten untersucht. Als Aminkomponenten dienten: 1. bis 5. H2N · (CH2)xNH2 mit x = 2 bis 6, 6. 1,8-Diaminonaphthalin, 7. 1-Amino-3-aminomethyl-3,5,5-trimethylcyclohexan, 8. 1,4-Bis-(aminomethyl)-cyclohexan, 9. 1,6-Diamino-2,4,4-trimethylhexan, 10. 1,5-Diamino-diäthylen-amin, 11. 1,7-Diamino-dipropylen-amin und 12. 4,4′-Diamino-diphenyl-methan, -amin, -sulfid und -äther. Als Aldehydkomponenten wurden verwendet: 13. Salicylaldehyd, 14. 5-Brom-Salicylaldehyd, 15. β-Resorcylaldehyd, 16. 2-Hydroxy-naphthaldehyd und 17. 5,5′-Methylen-bis-(Salicylaldehyd).Soweit untersucht, ist die Löslichkeit der Verbindungen mit 4. und 5. meist schlecht, in Pyridin aber besser. Bis-(Salicylaldehyd)-Ni(II)-1,5-diimino-pentan ist in Pyridin trimer. Die Cu- und Ni-Salze mit den sperrigen Diaminen 7., 8. und 9. sind in Bromoform und Pyridin oligomer (2 bis 5), mit 11. wird in Pyridin das Monomere gefunden. Mit Stuart-Kalotten lassen sich Dimere mit 7. und 9. als Aminkomponente bei planquadratischer Konfiguration um das Metallatom aufbauen, bei stark tetraederförmig verzerrter Konfiguration sind sogar bei 7. Monomere möglich. 17. führt stets zu völlig unlöslichen hochpolymeren Verbindungen, wohingegen 12. häufig zu oligomer löslichen Komplexen führt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723880204
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  • 8
    Electronic Resource
    Electronic Resource
    Fortschritte auf dem Gebiet des säurefesten Steinzeugs (1954)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 41-43 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Progress in the Manufacture of Acidresistant StonewareOne of the distinguishing features of stoneware is its resistance to chemical action and its outstanding mechanical properties. These qualities permitted the development of stoneware to keep pace with that of the chemical industry.The article describes further progress in the field of acid-resistant stoneware. Particular emphasis is laid on the development of special mixtures having great powers of resistance to temperature changes, at the same time retaining their excellent heat-conducting properties. Improvements in the mechanical working of stoneware are also discussed.The mechanical working of stoneware by grinding, polishing and threading has been brought to the point where the accuracy and finish of the work is equivalent to that obtaining in metal working practice. A new field of application of stoneware was thereby opened. The production of air and dust locks for use in installation working with ultrafine abrasive dust particles is an example. Stoneware rollers having precision ground surfaces are used in various industries. Ground, polished and threaded stoneware components enable many improvements and simplifications to be made in the design of machinery and equipment for the chemical industry.
    Notes: Kennzeichnend für den Werkstoff Steinzeug sind seine Beständigkeit gegenüber chemischer Korrosion und seine ausgezeichneten mechanischen Eigenschaften. Beides waren die Voraussetzungen, um mit der Entwicklung der chemischen Großindustrie Schritt halten zu können.In der Abhandlung werden weitere Fortschritte auf dem Gebiet des säurefesten Steinzeug besprochen. Diese werden besonders deutlich durch Entwicklung von temperaturwechselbeständigen und wärmeleitfähigen Spezialmassen und durch Verbesserung der Nachbearbeitungsmethoden.Die mechanische Bearbeitung von Steinzeug durch Schleifen, Polieren und Gewindeschneiden wurde so weit entwickelt, daß eine Vergütung und Maßgenauigkeit möglich ist, wie in der Metallindustrie. Dadurch wurden dem Steinzeug neue Anwendungsmöglichkeiten erschlossen. Beispielsweise werden Staubschleusen zur Förderung von feinsten aggressiven Staubteilchen hergestellt. Steinzeugwalzen mit präzisem Schliff der Oberfläche finden in verschiedenen Industriezweigen Verwendung. Geschliffene, polierte und mit Gewinde versehene Steinzeugteile brachten Vereinfachungen und Verbesserungen im Steinzeugmaschinen- und Apparatebau.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19540050202
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  • 9
    Electronic Resource
    Electronic Resource
    Chemische Reaktionstechnik. Von M. Baerns, H. Hofmann und A. Renken. George Thieme Verlag, Stuttgart 1992. 428 S., mit 215 Abb. und 41 Tab., geb., DM 80,-. (1994)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 66 (1994), S. 977-978 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330660727
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  • 10
    Electronic Resource
    Electronic Resource
    Carbocyclen durch Hofmann-AbbauProf. Dr. Dr. med. h. c. F. v. Bruchhausen zum 70. Geburtstag gewidmet. (1956)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 68 (1956), S. 617-618 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19560681911
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