@article{EngelsPeyerimhoffSkell1990,
  author    = {Engels, Bernd and Peyerimhoff, S.D. and Skell, P.S.},
  title     = {Theoretical study of the potential energy surface governing the stereochemistry in ClC\(_2\)H\(_4\) reactions},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58851},
  year      = {1990},
  abstract  = {Large-scale multireference configuration interaction calculations in a double·t·type AO basis including polarization functions are carried out for the potential surface of the ClC\(_2\)H\(_4\9 system. The charge distribution for various extreme points of the surface is discussed. The absolute minimum is found for an asymmetric ClC2H4 structure. The symmetrical bridged nuclear conformation is also found to be stable with respect to dissociation into Cl + C\(_2\)H\(_4\)• The activation energy for rotation about the C-C axis is calculated tobe around 18 kJ/mol, which is comparable tothat for the 1,2 migration {around 26 kJ/mol). The stereochemistry is governed by the fact that addition of CI to C\(_2\)H\(_4\) (or dissociation) is a two-step reaction proceeding through a symmetrica1 intermediate. The direct addition pathway possesses a small barrier of about 8 kJ jmol.},
  subject      = {Organische Chemie},
  language  = {en}
}
@article{KimChristlKochl1990,
  author    = {Kim, E. and Christl, Manfred and Kochl, J. K.},
  title     = {Charge-Transfer Cycloaddition of Homobenzvalene with Tetracyanoethylene},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-58537},
  year      = {1990},
  abstract  = {The transient yellow color observed in the cycloaddition of homobenzvalene (HB) with tetracyanoethylene (TCNE) is associated with the charge-transfer complex [HB, TCNE). The deliberate photoexcitation of [HB,TCNE) affords a mixture of charge-transfer cycloadducts (1, 2, and 3) that differs from that obtained in thermal cycloaddition. The relationship of {HB t TCNE•) radical-ion pair (as the critical reactive intermediate in charge-transfer cycloaddition) to the activation process for thermal cycloaddition is discussed.},
  subject      = {Organische Chemie},
  language  = {en}
}
@article{KurtzSchneiderCarretal.1990,
  author    = {Kurtz, Beth E. and Schneider, Wolfgang and Carr, Martha and Borkowski, John G. and Rellinger, Elizabeth},
  title     = {Strategy instruction and attributional beliefs in West Germany and the United States: Do teachers foster metacognitive development?},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62145},
  year      = {1990},
  abstract  = {Previous research has shown German children to be more strategic on sort-recall memory tasks than their American age-mates, and to show fewer effort-related attributions. We conducted this study to determine if those differences are due to systematic differences in the strategy instruction and attributional beliefs of German and U.S. teachers, and to explore metacognitive instructional practices in the two countries. Teachers responded to a questionnaire that inquired about their use of strategy instructions, fostering of reflective thinking in pupils, sources of children's learning problems, and modeling of metacognitive skills such as monitoring. The second part of the questionnaire asked about the reasons underlying children's academic successes and failures. German teachers reported more instruction of task-specific strategies, while American teachers showed more effort-related attributions. The types of strategies instructed and types of learning problems most frequently described varied across the two countries, and also according to how many years the teachers had taught. Results were discussed regarding their implications for metacognitive developmental theory, particularly regarding culture and other environmental influences on the development of controlled processing.},
  subject      = {Psychologie},
  language  = {en}
}
@article{KraemerNeubert1990,
  author    = {Kr{\"a}mer-Neubert, Sabine},
  title     = {Mundart und Geschichte des Miltenberger Raumes},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-73135},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Mundart},
  language  = {de}
}
@article{EpeHarttigStopperetal.1990,
  author    = {Epe, B. and Harttig, U. and Stopper, Helga and Metzler, M.},
  title     = {Covalent binding of reactive estrogen metabolites to microtubular protein as a possible mechanism of aneuploidy induction and neoplastic cell transformation},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63478},
  year      = {1990},
  abstract  = {Neoplastic cell transfonnation induced by estrogens and some other carcinogen\& such as benzene appears to involve the induction of mitotic aneuploidy rather than DNA damage and point mutations. As metabolic activation may also play an important roJe in the mechanism of carcinogenesis of these nongenotoxic compounds, we have studied the Interaction of reactive quinone metabolites of various estrogens and of benzene with the major microtubular protein, tubulin, in a cell-free system. Covalent binding of the radioactively labeled metabolites to the a- and 13-subunit of tubulin was found to depend on the structure of the metabolite. When the adducted tubulins were tested in vitro for their ability to polymerize to microtubules, Inhibition of microtubule assembly was obsened in every case, although to varying extents. It is proposed that the fonnation of covalent tubulin adducts may impair the formation of mitotic spindies and thus contribute to chromosomal nondisjunction and aneuploidy induction.},
  subject      = {Toxikologie},
  language  = {en}
}
@article{PressleyBorkowskiSchneider1990,
  author    = {Pressley, Michael and Borkowski, John G. and Schneider, Wolfgang},
  title     = {Good information processing: What it is and how education can promote it},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62127},
  year      = {1990},
  abstract  = {The nature of good information processing is outlined as determined by intact neurology, information stored in long-term memory, and general cognitive tendencies, attitudes, and styles. Educators can promote the development of good information processing by promoting what is in long-term memory. This can be accomplished by teaching important literary, scientific, and cultural knowledge; teaching strategies; motivating the acquisition and use of important conceptual knowledge and strategies; and encouraging the general tendencies supporting good information processing. Good information processing can be produced by years of appropriate educational input. Good information processors cannot be produced by short-term interventions.},
  subject      = {Psychologie},
  language  = {en}
}
@article{MerzFliednerLehrnbecheretal.1990,
  author    = {Merz, H. and Fliedner, A. and Lehrnbecher, T. and Sebald, Walter and M{\"u}ller-Hermelink, H. K. and Feller, A. C.},
  title     = {Cytokine expression in B-cell non-Hodgkin lymphomas},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62539},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Biochemie},
  language  = {en}
}
@article{LiebertSchneiderSchauliesBaczkoetal.1990,
  author    = {Liebert, U. G. and Schneider-Schaulies, Sibylle and Baczko, K. and ter Meulen, V.},
  title     = {Antibody-induced restriction of viral gene expression in measles encephalitis in rats},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62271},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Virologie},
  language  = {en}
}
@article{SchneiderSchauliesLiebertBaczkoetal.1990,
  author    = {Schneider-Schaulies, Sibylle and Liebert, U. G. and Baczko, K. and ter Meulen, V.},
  title     = {Restricted expression of measles virus in primary rat astroglial cells},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62283},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Virologie},
  language  = {en}
}
@article{SchneiderSchauliesvonBrunnSchachner1990,
  author    = {Schneider-Schaulies, J{\"u}rgen and von Brunn, A. and Schachner, M.},
  title     = {Recombinant peripheral myelin protein P\(_o\) confers both adhesion and neurite outgrowth promoting properties},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-54841},
  year      = {1990},
  abstract  = {To probe into the functional properties of the major peripheral myelin cell surface glycoprotein P 0 , its ability to confer adhesion and neurite outgrowth-promoting properfies was studied in cell culture. Tothis aim, Po was expressed as integral membrane glycoprotein at the surface of CV -1 cells with the help of a recombinant vaccinia virus expression system. Furthermore, the immunoglobulin-like extracellular domain of P0 (P0 -ED) was expressed as soluble profein in a bacterial expression system and used as substrafe coated to plastic dishes or as competitor in cell adhesion and neurite outgrowth-promoting assays. The adhesion of P0 -expressing CV-1 cells to P0 -ED substrafe was specifically inhibitable by polyclonal Po antibodies (54\% :t 6\% ). In addition, the specific interaction between Po molecules could be reduced ( 49\% ± 8\%) by adding soluble P0 -ED to the culture medium, demonstrating that the homophilic inter~ction between recombinant Po molecules can be mediated, at least on one partner of interacting molecules, by the unglycosylated Ig-like domain. Substrate-coated p -ED also conferred adhesion and neurite outgrowth ability to dorsal root ganglion neurons with neurites of a mean length of about 150 ,_..m. This neurite outgrowth was specifically inhibitable by soluble P" (74\% ± 14\%) and P 0 antibodies (65\% ± 9\% ). These observations indicate that Po is capable of displaying two different types of functional roles in the myelination process of . peripheral nerves: The heterophilic interaction with neurons may be responsible for the recognition between axon and myelinating Schwann cell at the onset of myelination, whereas the homophilic interacton may indicate its roJe in the selfrecognition of the apposing loops of Schwann cell surface membranes during the myelination process and in the mature compact myelin sheath.},
  subject      = {Immunologie},
  language  = {en}
}
@article{SirenFeuerstein1990,
  author    = {Sir{\´e}n, Anna-Leena and Feuerstein, G.},
  title     = {Cardiovascular effects of anatoxin-a in the conscious rat},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63103},
  year      = {1990},
  abstract  = {Cardiovascular Effects of Anatoxin-A in the Conscious Rat. SJREN, A.-L., AND FEUERSTEIN, G. (1990). Toxicol. Appl. Pharmacol. 102,91-100. The effects ofanatoxin-A on mean arterial pressure (MAP), heart rate, cardiac index (CI), and blood flow (BF) in hindquarter (HQ), renal (R). and mesenteric (M) vascular beds were studied after intravenous (iv) and intracerebroventricular (icv) administration in the conscious rat. The pharmacological profile of anatoxin-A was further compared to nicotine administered iv and icv. MAP and heart rate were measured from femoral artery, CI by thermodilution method, and blood flow by Doppler velocimetry. Anatoxin-A and nicotine (30, 100 and 300 1-!g/kg iv) produced an increase in MAP with concomitant bradycardia. The highest doses increased Cl. MBF and RBF decreased due to a vasoconstriction in M and R vasculature. These effects were attenuated by the ganglion blocker chlorisondamine (5 mg/kg, iv). Anatoxin-A ( 100 1-!g/k~ iv) increased plasma epinephrine Ievels by 2- fold with virtually no effect on norepinephrine whereas nicotine ( 100 ~oLg/kg, iv) increased plasma epinephrine and norepinephrine by 20- to 30-fold. Central administration of anatoxin-A and nicotine (30-100 ,ug/kg icv) increased MAP with no effect on heart rate and produced M and R vasoconstriction. In summary, the present study demonstrates that anatoxin-A acts as a nicotinic cholinergic agonist in the c.onscious rat after both systemic and centrat administration. Anatoxin-A and nicotine produced pressor and reno-splanchnic vasoconstrictor responses and at high doses increased cardiac output. These effects were mediated by activation ofthe nicotinic receptors in the adrenal medulla and sympathetic ganglia. However, marked differences were found in the potency ofanatoxin-A versus nicotine to stimulate the sympathoadrenomedullary axis.},
  subject      = {Neurobiologie},
  language  = {en}
}
@article{PaakkariPaakkariSirenetal.1990,
  author    = {Paakkari, P. and Paakkari, I. and Sir{\´e}n, Anna-Leena and Feuerstein, G.},
  title     = {Respiratory and locomotor stimulation by low doses of dermorphin - a Mu\(_1\)-receptor mediated effect},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-63110},
  year      = {1990},
  abstract  = {The selective opioid mu receptor agonist dermorphin increased the locomotor activity of rats dose dependently at 1 0 to 1 00 pmol/kg i.c.v. Respiratory rate, relative tidal volume and respiratory minute volume also increased unrelated to changes in locomotor activity. Higher doses, on the other hand, produced catalepsy and respiratory depression. Pretreatment of the rats with the mu,-selective antagonist naloxonazine (10 mg/kg i.v.) blocked the stimulant locomotor and respiratory effects of low doses of dermorphin (1 0--1 00 pmol/kg), but potentiated the respiratory depressant effect of a high dose (1 0 nmol/kg) of dermorphin. The selective benzodiazepine antagonist flumazenil (5 mg/kg), which has been shown previously to antagonize catalepsy and respiratory depression produced by relatively high doses of dermorphin, did not antagonize the respiratory or locomotor stimulant effect of dermorphin. The data suggest that mu\(_1\)-opioid receptors are responsible for the low dose stimulant effects of dermorphin on locomotor activity and respiration whereas mu\(_2\) receptors mediate the respiratory depressant effect of dermorphin.},
  subject      = {Neurobiologie},
  language  = {en}
}
@article{SodianSchneider1990,
  author    = {Sodian, Beate and Schneider, Wolfgang},
  title     = {Children's understanding of cognitive cueing: How to manipulate cues to fool a competitor},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62132},
  year      = {1990},
  abstract  = {4-6-year-old children's understanding of cognitive cuing was studied in 2 experiments using a strategic interaction paradigm. Ghildren could fool a competitor by hiding targets in locations that were labeled with semantically weakly associated cues and help a cooperative partner by hiding them in semantically highly associated locations. Very few 4-year-olds, half the 5-year-olds, and almost all 6-year-olds appropriately chose semantically highly vs. weakly associated hiding places to make the targets easy vs. difficult to find. The second experiment showed that 4-year-olds did not strategically manipulate cues as sources of information, although they themselves proficiently used them as such in a search task. These findings are discussed with regard to research on children's developing understanding of origins of knowledge and belief and with regard to recent claims that young preschoolers possess a metacognitive understanding of cognitive cuing.},
  subject      = {Psychologie},
  language  = {en}
}
@article{OeschgerFacklerHameretal.1990,
  author    = {Oeschger, Bernhard and Fackler, Guido and Hamer, Jens and Burkhard, Antje},
  title     = {Die Landesstelle f{\"u}r Volkskunde Freiburg 1960-1990},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-41796},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Volkskunde},
  language  = {de}
}
@misc{Fiala1990,
  author    = {Fiala, Brigitte},
  title     = {Extrafloral nectaries versus ant-Homoptera mutualisms : a comment on Becerra and Venable},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-32948},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Nektarium},
  language  = {en}
}
@article{Kuenzler1990,
  author    = {K{\"u}nzler, Jan},
  title     = {Familiale Arbeitsteilung bei Studierenden mit Kleinkindern : Erste Ergebnisse einer Zeitbudgetstudie},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-50752},
  year      = {1990},
  abstract  = {Gerade bei jungen Frauen und M{\"a}nnern mit hohem Bildungsniveau haben sich in den letzten Jahren die Einstellungen zur familialen Arbeitsteilung stark gewandelt. Mittlerweile wird eine partnerschaftlieh- egalit{\"a}re Verteilung der Pflichten im Haushalt mehrheitlich begr{\"u}ßt. Um festzustellen, ob ver{\"a}nderte Einstellun· gen auch verhaltenswirksam geworden sind, wurden 66 Studentinnen und Studenten mit Kleinkindern mit Methoden der Zeitbudgetforschung zu Tagesablauf und Zeitverwendung befragt. Bei insgesamt im Vergleich zur Erwerbsbev{\"o}l· kerung hoher Gesamtbelastung waren auch hier Hausarbeit und Kinderbetreuung ungleich, und zwar zu Lasten der Frauen, verteilt. Studentinnen k{\"o}nnen daher wesentlich weniger Zeit in ihr Studium investieren als Studenten. Immerhin hatte eine relativ große Minderheit partnerschaftliehe Formen der Arbeitsteilung verwirklicht.},
  subject      = {Soziologie},
  language  = {de}
}
@article{WieberWalzBurschka1990,
  author    = {Wieber, M. and Walz, J. and Burschka, Christian},
  title     = {Organostibons{\"a}ureester. II [1]: Darstellung und Eigenschaften von Methanstibons{\"a}ureestern. Struktur von Di-μ-methoxy-bis[dibromo-methoxy-methyl-antimon(V)]},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31909},
  year      = {1990},
  abstract  = {Dimere alkoxyverbr{\"u}ckte Verbindungen des Typs [CH\(_3\)SbX\(_2\)(OR)(μ-OR)]\(_2\) (X = Cl, Br; R = CH\(_3\), C\(_2\)H\(_5\)) k{\"o}nnen durch Oxidation von CH\(_3\)Sb(OR)\(_2\) mit Br\(_2\) oder S0\(_2\)Cl\(_2\) in CH\(_2\)Cl\(_2\) unterhalb -60°C als lichtempfindliche kristalline Feststoffe erhalten werden. Die Struktur der Verbindung [CH\(_3\)SbBr\(_2\)(OCH\(_3\))(μ-OCH\(_3\))]\(_2\) konnte mittels R{\"o}ntgenstrukturanalyse bestimmt werden. Umsetzungen mit Natriumalkoholaten in den entsprechenden Alkoholen bei 0°C f{\"u}hren zu dimeren Tetraalkoxymethylstiboranen. Austauschreaktionen von Tetramethoxymethylstiboran mit Ethanol ergeben das Ethoxyderivat und mit Diolen symmetrische spirocyclische Methanstibons{\"a}ureester.},
  subject      = {Chemie},
  language  = {de}
}
@article{WieberHoehlBurschka1990,
  author    = {Wieber, M. and Hoehl, H. and Burschka, Christian},
  title     = {Diphenylantimonalkoxide und -thiolate als Liganden in Metallcarbonylkomplexen des Chroms und Molybd{\"a}ns; Kristallstruktur von Tris[diphenyl(phenylthiolato)stiban]molybd{\"a}ntricarbonyl},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31919},
  year      = {1990},
  abstract  = {Diorganoantimonverbindungen R\(_2\)SbX (R = C\(_6\)H\(_5\) X = S-Organyl, O-Organyl) reagieren mit Cycloheptatrienylmolybd{\"a}ntricarbonyl zu Produkten des Typs [R\(_2\)SbX]\(_3\)Mo(CO)\(_3\). Die analogen Komplexe des Chroms k{\"o}nnen durch Reaktion von Tris(acetonitril) chromtricarbonyl mit den Antimon-Liganden dargestellt werden. (1,5-Cyclooctadien)molybd{\"a}ntetracarbonyl reagiert unter Substitution mit Diorganoantimonderivaten R\(_2\)SbX (R = C\(_6\)R\(_5\), X = S-Organyl) zu den Verbindungen [R\(_2\)SbX]\(_2\)Mo(CO)\(_4\) Synthese und Eigenschaften der StibanKomplexe sowie die Kristallstruktur der Verbindung [(C\(_6\)H\(_5\))\(_2\)SbSC\(_6\)H\(_5\)]\(_3\)Mo(CO)\(_3\) werden beschrieben.},
  subject      = {Chemie},
  language  = {de}
}
@inproceedings{Wehgartner1990,
  author    = {Wehgartner, Irma},
  title     = {Bemerkungen zum Bild der Frau in der etruskischen Kunst},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-53444},
  year      = {1990},
  abstract  = {No abstract available},
  subject      = {Etrusker},
  language  = {de}
}
@article{Sponholz1990,
  author    = {Sponholz, Barbara},
  title     = {Sedimentologische Untersuchungen an Verf{\"u}llungen von Silikatkarstformen im Djado und an der Stufe von Bilma (NE-Niger)},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-56650},
  year      = {1990},
  abstract  = {Vorstellung eines durch die Jubil{\"a}umsstiftung der Universit{\"a}t W{\"u}rzburg gef{\"o}rderten Forschungsvorhabens},
  subject      = {Geographie},
  language  = {de}
}