TY - CHAP A1 - Zimmermann, U. A1 - Stopper, Helga T1 - Electrofusion and electropermeabilization of cells N2 - No abstract available. KW - Elektrofusion KW - Elektroporation KW - Zelle Y1 - 1987 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-73065 ER - TY - CHAP A1 - Wohlfahrt, Saskia ED - Jetter, Tobias T1 - Rethinking Cultural Studies: From the Role of the Intellectual to Transnational Feminism T2 - Global Cultural Studies? Engaged Scholarship between National and Transnational Frames N2 - No abstract available. KW - Kulturwissenschaften KW - Feminismus KW - Internationalität KW - Spivak, Gayatri Chakravorty KW - Wallace, Michele KW - cultural studies KW - feminism KW - transnationalism KW - Spivak, Gayatri Chakravorty KW - Wallace, Michele Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-305935 PB - Würzburg University Press CY - Würzburg ER - TY - CHAP A1 - Wilhelm, Gernot T1 - Reconstructing the phonology of dead languages N2 - no Abstract available KW - Schreiben KW - Schrift KW - Sprache KW - Alphabetisierung Y1 - 1983 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-103601 ER - TY - CHAP A1 - Weinert, Franz E. A1 - Schneider, Wolfgang A1 - Knopf, Monika T1 - Individual differences in memory development across the life-span N2 - Experimental research on memory development has typically focused on the description of universal development trends across the life span and the identification of major sources of development within this domain. However, there is a lack of studies investigating the preconditions and effects of interindividual variability within age groups across different memory tasks. Similarly, our knowledge about the stability of interindividual differences across the life span as well as the sources and the amount of intraindividual variability across memory tasks is scarce. In the present chapter, we concentrate on these neglected issues. First, theoretical assumptions concerning the interindividual and intraindividual variability of memory development are discussed. Next, empirical evidence is presented that seems suited to document the importance of these neglected issues. While we try to give a representative account of the literature, the emphasis is on more recent studies of memory development in children and elderly adults conducted in our laboratory. The results demonstrate that age-related changes and individual differences in the knowledge base are particularly important for describing and explaining individual differences in memory develoment. In comparison, the rote of stable individual differences in basic memory capacities in explaining variations in memory development is less clear given tbe conflicting empirical evidence. In the final section of the chapter consequences for future research are discussed. KW - Gedächtnisbildung KW - Lebensalter Y1 - 1988 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-70666 ER - TY - CHAP A1 - Weinert, Franz E. A1 - Schneider, Wolfgang T1 - Cognitive, social and emotional development N2 - No abstract available. KW - Identitätsentwicklung KW - Längsschnittuntersuchung KW - Persönlichkeitsentwicklung Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87448 ER - TY - CHAP A1 - Weinert, Franz E. A1 - Helmke, Andreas A1 - Schneider, Wolfgang T1 - Individual differences in learning Performance and in school achievement: Plausible parallels and some unexplained discrepancies N2 - No abstract available. KW - Lernerfolg KW - Schulleistung Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-71210 ER - TY - CHAP A1 - Warburg, M. R. A1 - Linsenmair, Karl Eduard A1 - Bercovitz, K. T1 - The effect of climate on the distribution and abundance of isopods N2 - Climate affects both the distribution and abundance of isopods. Humidity and moisture affect their activity and distribution. Survival of juveniles is largely dependent on moisture. The reproductive pattern is affected by temperature and light. Food affects growth and thus, indirectly, also reproduction, as larger females tend to produce larger broods and more frequent broods than smaller ones. Generally in isopods there is little evidence to suggest that food is a very important factor affecting their abundance. Both semelparity and iteroparity are found in isopods and both reproductive strategies are apparently successful. Mortality factors affect the oocytes, the marsupial stages, and most of all the newly released individuals . Apart from climatic factors, predation and, to a lesser extent, parasitism are the main causes of mortality. Longevity of isopods ranges from one to five years. Occasional population explosions ofisopods are known to take place, their cause being unknown. Y1 - 1984 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-44473 ER - TY - CHAP A1 - Thoenen, Hans A1 - Hughes, Richard A. A1 - Sendtner, Michael T1 - Towards a comprehensive understanding of the trophic support of motoneurons N2 - Motoneurons played an essential role in establishing the concept of target-mediated support of innervating neurons. However, it took several decades until molecules were identined which trophically support motoneurons in vitro and in vivo. The most potent molecule identined so far is ciliary neurotrophic factor (CNTF). It is expressed as a cytosolic molecule in myelinating Schwann cells rather than in skeletal muscle in the postnatal period and therefore does not qualify as a target-derived neurotrophic factor regulating motoneuron survival during embryonic development. However, the inactivation of CNTF by gene targeting experiments results in progressive atrophy and degeneration of motoneurons, demonstrating that CNTF plays an essential role as a maintenance factor for motoneurons postnatally. Secretory molecules which are expressed in skeletal muscle during embryonic development and which support motoneurons in culture and partially also in vivo include members of the NGF gene family (BDNF, NT-3, NT-4/S) , FGF-S, IGF-I, and UF. The evaluation of the physiological importance of these molecules is under investigation. KW - neurotrophic molecules KW - CNTF KW - gene targeting KW - NGF gene family KW - FGF-5 KW - lIF KW - IGF-I Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31117 ER - TY - CHAP A1 - Spielmann, W.-S. A1 - Arend, L. J. A1 - Klotz, Karl-Norbert A1 - Schwabe, U. T1 - Adenosine receptors and singnaling in the kidney N2 - No abstract available. KW - Adenosinrezeptor KW - Niere Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86114 ER - TY - CHAP A1 - Spielmann, W. S. A1 - Arend, L. J. A1 - Klotz, Karl-Norbert A1 - Schwabe, U. T1 - Adenosine control of the renal Collecting tubule: receptors and signaling N2 - No abstract available. KW - Adenosin Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86129 ER - TY - CHAP A1 - Shtaltovna, Yuliya ED - Lazebna, Nataliia ED - Kumar, Dinesh T1 - Linguistic Democratization of the Modern English Language: Functional Parameters of English Youth Slang Neologisms T2 - Studies in Modern English N2 - No abstract available. KW - English youth slang KW - neologism Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-296514 PB - Würzburg University Press CY - Würzburg ER - TY - CHAP A1 - Shephard, S. E. A1 - Schlatter, C. A1 - Lutz, Werner K. T1 - Model risk analysis of nitrosatable compounds in the diet as precursors of potential endogenous carcinogens N2 - The potential health risk posed by the endogenous formation of N-nitroso compounds (NOC) from nitrosation of dietary ureas, guanidines, amides, amino acids and amanes (primary, secondary and aromatic) was estimated according to the model: Risk = ( daily intake of precursor] X (gastric concentration of nitrite ]n X [nitrosatability rate constant] X [cilrcinogenicity of derivative]. The daily intakes ofthese compound classes span five orders ofmagnitude (100 g/day amides, top; 1-10 mg/day secondary amines, ureas, bottom); the nitrosation rate constants span seven orders of magnitude (aryl amines, ureas, top; amides, secondary amines, bottom); and the carcinogenicity estimates span a 10 000-fold range from 'very strong' to 'virtually noncarcinogenic'. The resulting risk estimates likewise span an enormous range (nine orders of magnitude ): dietary ureas and aromatic amines combined with high nitrite concentration could pose as great a risk as the intake of preformed N-nitrosodimethylamine in the diet. In contrast, the risk posed by the in-vivo nitrosation of primary and secondary amines is probably negligible. The risk contributed by amides (including protein), guanidines and primary amino acids is intermediate between these two extremes. KW - Risikoanalyse KW - Carcinogen KW - Ernährung Y1 - 1987 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86188 ER - TY - CHAP A1 - Shephard, S. E. A1 - Meier, I. A1 - Lutz, Werner K. T1 - Alkylating potency of nitrosated amino acids and peptides N2 - Tbe alkylating potency of unstable N-nitrosamino acids and N-nitrosopeptides was investigated in vitro using 4-(para-nitrobenzyl)pyridine (NBP) as nucleophile. Of the amino acids, Met and those with an aromatic side chain were the most potent. The relative overall alkylating potency was 23:10:5:4:2:1: for Trp, Met, His, 1)rr, Phe and Gly, respectively. The homo-dipeptides were much more potent than the amino acids, with relative potencies of 400:110:100:8:3:1, for Trp-Trp, l)T-'I)T, Met-Met, Asp-Asp, Phe-Phe and Gly, respectively. In the one-phase reaction system (in which NBP is already present durlog the nitrosation reaction at acidic pH), all amino acids tested showed a second-order reaction for nitrite. In the two-phase system (in which NBP is added only after bringing the nitrosation reaction mixture to neutrality), all amino acids tested except one again showed a second-order reaction for nitrite (Phe, His, Asp and the dipeptide artiticial sweetener aspartame); only Met under these conditions bad a reaction order of one for nitrite. This could mean that nitrosation of the side chain of Metproduces a second N-nitroso product which is relatively stable in acid but reacts with NBP under neutral conditions. In the human stomach, this side-chain nitrosation might become more important than the reactions at the primary amino group, firstly because of the greater stability of the product(s) in acid and secondly because of the tirst-order reaction rate for nitrite. A decrease in nitrite concentration from the millimolar concentrations ofthe in-vitro assay to the micromolar concentrations in the stomach reduces the reaction rate by a factor of 1000 for the side-chain nitrosation, whereas a million-fold reduction will be observed for nitrosation of the amino group. KW - Aminosäuren Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86320 ER - TY - CHAP A1 - Shephard, S. E. A1 - Hegi, M. E. A1 - Lutz, Werner K. T1 - In-vitro assays to detect alkylating and mutagenic activities of dietary components nitrosated in situ N2 - Nitrosation of dietary components has been combined with the 4-(para-nitrobenzyl)pyridine (NBP) colorimetric test for screening alkylating agents and with the Ames test for the detection of mutagenic activity. This allowed the investigation of short-hved nitrosation products of dietary components which generate electrophilic degradation products requiring no metabolic activation (natural amino acids and some derivatives, ureas, guanidines, primary alkyl and aryl amines). In a first system, precursor, nitrous acid and NBP were present simultaneously. All amino acids tested, except glutamic acid and glutamine, gave positive results. The reactivities spanned more than three orders of magnitude, with the aromatic amino acids and methionine the most active; two primary amines, tryptamine and histamine, were also strongly reactive. All guanidines tested, except the amino acid arginine, gave negative results. A second system consisted of two phases: NBP was added only after destruction of residual nitrite and adjustment of the pH to neutrality. This system was useful for the study of ureas, which are stable in acid but not in neutral media. The range of responses covered more than two orders of magnitude. Most amino acids and primary amines also gave positive results, but could be assessed only after analysing the kinetics of the competing reactions and choosing appropriate reaction times. In a third system, Salmonella typhimurium strain TA1OO replaced NBP. Representatives of the class of amino acids, ureas, the primary amine tryptamine, and aniline became higbly mutagenic upon nitrosation. Methylguanidine was only weakly mutagenic under the present assay conditions. The results indicate that further studies with unstable nitrosation products of dietary components are required to understand more thoroughly the role of endogenous nitrosation in gastric cancer. KW - Medizin Y1 - 1987 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86194 ER - TY - CHAP A1 - Schüssler, Ulrich A1 - Okrusch, M. A1 - Seidel, E. A1 - Richter, P. T1 - Geochemical characteristics of metabasites in different tectonic units of the North-East-Bavarian crystalline basement N2 - Comprehensive geochemical investigations of rnetabasites yielded constraints for a correlation of, or discrimination between the different tectonic units within the northeast Bavarian crystalline basement. The Münchberg nappe pile consists of at least five large tectonic units which exhibit differences in lithology, in part also in metamorphie grade and in metamorphie history. The metabasites in each of these nappes show their own, significant geochemical characteristics. The lowermost tectonic unit, the Bavarian lithofacies, includes the anchimetamorphie Ordovician Randschieferserie which contains alkaline basalts. In their geochemistry, they are sirnilar to the metabasites of the Fichtelgebirge crystalline complex in the autochthonous Saxo-thuringian. The next higher tectonic unit of the Münchberg nappe pile, the Prasinit-Phyllit-Serie contains metabasites which can be derived from subalkaline basalts with a clear calc-alkaline tendency. There is a striking geochemical resemblance to the metabasites of the Erbendorf Greenschist Zone (EGZ) underscorinq the similar lithology of both allochthonous units which appear to be in a similar tectonic position. The Randamphibolit-Serie higher up in the Münchberg nappe pile consists of metabasites with tholeiitic characteristics and a pronounced differentiation trend. The next higher tectonic unit, the Liegendserie of the Münchberg gneiss cornplex s. str., contains metagabbros to metagabbronorites with a high-Al basaltic composition. The amphibolites and banded hornblende gneisses of the overlying Hangendserie are of subalkaline basaltic character with calc-alkaline affinity. The Zone Erbendorf-Vohenstrauss (ZEV) is currently regarded as an allochthonous unit equivalent to the higher crystalline nappes of the Münchberg pile. However, the geochemical character of the metabasites do not encourage such a correlation. Neither the schistose and striped amphibolites nor the flaseramphibolites of the ZEV with their N-KORB and E-MORB character respectively, find convincing counterparts in the crystalline nappes of the Münchberg pile. However, an interestingly close resemblance exists between the schistose and striped amphibolites in the ZEV, on the one hand, and in the autochthonous Zone Tirschenreuth- Mähring (ZTM) and the adjacent Moldanubian sensu strictu, on the other. Owing to the absence of age criteria, our results cannot be used, so far, to reconstruct the paleogeographical position of the individual tectonic units, based on the geochemical characteristics of their respective metabasites. Y1 - 1989 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-39221 ER - TY - CHAP A1 - Schüssler, Ullrich T1 - Electron microprobe investigations on the copper seal from burial 10 N2 - No abstract available KW - Tell Khirbet Salih KW - Tell Jikan KW - Ausgrabung Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-38856 ER - TY - CHAP A1 - Schönfeld, Sophie ED - Jetter, Tobias T1 - Western Constructions of Disability and Local Systems of Knowledge: A Look at the Problematic Aspects of Intercultural Work T2 - Global Cultural Studies? Engaged Scholarship between National and Transnational Frames N2 - No abstract available. KW - Behinderung KW - Pädagogik KW - Interkulturalität KW - Representation KW - Lokales Wissen KW - disability KW - education KW - intercultural pedagogy KW - politics of representation KW - local culture of knowledge Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-305910 PB - Würzburg University Press CY - Würzburg ER - TY - CHAP A1 - Schönbeck, Sebastian T1 - Return to the Fable: Rethinking a Genre Neglected in Animal Studies and Ecocriticism T2 - Texts, Animals, Environments: Zoopoetics and Ecopoetics N2 - No abstract available. KW - Animal Studies KW - Cultural Animal Studies KW - Cultural Studies KW - Ecocriticism KW - Environmental Humanities KW - Human-Animal Studies KW - Literary Studies Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-177966 UR - https://www.rombach-verlag.de/buecher/suchergebnis/rombach/buch/details/texts-animals-environments.html PB - Rombach Druck- und Verlagshaus CY - Freiburg i. Br. ER - TY - CHAP A1 - Schneider, Wolfgang A1 - Körkel, Joachim A1 - Weinert, Franz E. T1 - Expert Knowledge, General Abilities, and Text Processing N2 - No abstract available. KW - Textverarbeitung KW - Wissen Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86548 ER - TY - CHAP A1 - Schneider, Wolfgang A1 - Hasselhorn, Marcus T1 - Situational context features and memory development : insights from replications of Istomina's experiment N2 - No abstract available KW - Psychologie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-50397 ER -