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Die Wirkung der Variablen ‚Intelligenz‘ und ‚Geräuschintensität‘ auf die unmittelbare Lernleistung wurde mit zwei Tests untersucht. Dadurch sollten die „Stimulus trace"-Theorie (Ellis 1963) und die „neural theory" (Spitz 1963) bei 45 deutschen, lernbehinderten Kindern geprüft werden. Der „Stimulus trace"-Faktor ließ sich für Geräuschreize nicht bestätigen. Es gab keinen Beweis für die Gültigkeit der neuralen Theorie. Bei Erhöhung der Lautstärke sank die Lernleistung in beiden Tests.
The haemolymph of the adult Colorado potato beetle, Lepinotarsa decemlineata Say, contains a high molecular weight (MW > 200,000) JH-III specific binding protein. The Kd value of the protein for racemic JH-III is 1.3 ± 0.2 × 10−7 M. It has a lower affinity for racemic JH-I and it does not bind JH-III-diol or JH-III-acid. The binding protein does discriminate between the enantiomers of synthetic, racemic JH-III as was determined by stereochemical anaysis of the bound and the free JH-III. Incubation of racemic JH-III with crude haemolymph results in preferential formation of (10S)-JH-III-acid, the unnatural configuration. The JH-esterase present in L. decemlineata haemolymph is not enantioselective. It is concluded that the most important function of the binding protein is that of a specific carrier, protecting the natural hormone against degradation by esterases. The carrier does not protect JH-I as efficiently as the lower homologue.
Langmuir-Blodgett multilayers of hydrocarbon and fluorocarbon polymers with hydrophilic spacer, lipid-polyelectrolyte complexes and mesogenic polymers have been prepared. The thermal behaviour of the multilayers was studied by small angle X-ray scattering, IR and UV—visible spectroscopy. Good thermal stabilities were found for the various classes of polymers. In addition, for both complexed multilayers and mesogenic polymer films, reorientation processes were observed.
The synthesis of galactose clusters that are linked to a steroid moiety by a peptide-like spacer unit is described. The galactose cluster is obtained by Koenigs-Knorr glycosylation of TRIS-Gly-Fmoc (2b) under Helferich conditions. Peptide and ester bonds are formed after activation of carboxylic acids as diphenylthiophene dioxide (TDO) esters. 6a is synthesized in a convergent way by coupling of (Ac4Gal)3-TRIS-Gly (3e) with cholesteryl TDO succinate (5b). Coupling of (Ac4Gal)3-TRIS-Gly hydrogen succinate (3f) with Gly-O-Chol (5d) by means of EEDQ yields 6d. Reaction of (Ac4Gal)3-TRIS-Gly-SUCC-O-TDO (3g) with 25-hydroxycholesterol leads in a linear sequence to the oxysterol derivative 6f. Selective cleavage of the acetyl groups from galactose units yields the known compound 6b and the new derivatives 6e and 6g.
Prostaglandin E₂ has been reported both to stimulate glycogen-phosphorylase activity (glycogenolytic effect) and to inhibit the glucagon-stimulated glycogen-phosphorylase activity (antiglycogenolytic effect) in rat hepatocytes. It was the purpose of this study to resolve this apparent contradiction and to characterize the signalling pathways and receptor subtypes involved in the opposing prostaglandin E₂ actions. Prostaglandin E₂ (10 μM) increased glucose output, glycogen-phosphorylase activity and inositol trisphosphate formation in hepatocyte cell culture andor suspension. In the same systems, prostaglandin E₂ decreased the glucagon-stimulated (1 nM) glycogen-phosphorylase activity and cAMP formation. The signalling pathway leading to the glycogenolytic effect of PGE₂ was interrupted by incubation of the hepatocytes with 4P-phorbol 12-myristate 13-acetate (100 nM) for 10 min, while the antiglycogenolytic effect of prostaglandin E₂ was not attenuated. The signalling pathway leading to the antiglycogenolytic effect of prostaglandin E₂ was interrupted by an incubation of cultured hepatocytes with pertussis toxin (100 ng/ml) for 18 h, whereas the glycogenolytic effect of prostaglandin E₂ was enhanced. The EP₁/EP₃ prostaglandin-E₂-receptor-specific prostaglandin E₂ analogue Sulproston had a stronger glycogenolytic potency than the EP₃ prostaglandin-E₂-receptor-specific prostaglandin E₂ analogue Misoprostol. The antiglycogenolytic potency of both agonists was equal. It is concluded that the glycogenolytic and the antiglycogenolytic effects of prostaglandin E₂ are mediated via different signalling pathways in hepatocytes possibly involving EP₁ and EP₃ prostaglandin E₂ receptors, respectively.
In the earliest recorded poetry of the Insular Celtic literature, the occurrence intra-linear phoneme recurrences in addition to the rather common feature of alliteration suggest that they served an indexical motivation of the metrical constraints. This is in particular suggested by the indexical use of personal names. This practice may perhaps even reach back to Continental Celtic metrical practices which already seem to bear witness of the use of such language skills. It is particularly interesting to note that the initial mutations of the lexemes do not obstruct indexicality. It is suggested that the orally trained poets may perhaps have received specific grammatical instructions as part of their prolongued poetic education.
realisation in form of a retroflex is not only found in the English south West ('West Country burr'), but also across the English Channel in a well circumscribed area of Trégor in Brittany. Both areas also share other phonetic features such as sonorisation of word initial fricatives, epenthesis, surnames etc. How is this to be explained? Intensive mobility and trade across the sea suggest themselves as a possible answer. Travelling by sea, aided by expert knowledge of the seasonal currents and winds, was much quicker and efficient in former times than travelling across land. In this connection, the phenomenon of the "Johnnys de Roccoff" who traded Breton onions along the English coasts until very recently is pointed ou as a type of contact which may have transported phoneme realisations and lexis across the sea, forming a linguistic area with not much contact with their respective hinterlands in England and Brittany.
A detailed theoretical investigation of the reflection of an atomic de Broglie wave at an evanescent wave mirror is presented. The classical and the semiclassical descriptions of the reflection process are reviewed, and a full wave-mechanical approach based on the analytical soution of the corresponding Schrödinger equation is presented. The phase shift at reflection is calculated exactly and interpreted in terms of instantaneous reflection of the atom at an effective mirror. Besides the semiclassical regime of reflection describable by the WKB method, a pure quantum regime of reflection is identified in the limit where the incident de Broglie wavelength is large compared to the evanescent wave decay length.
Feuchtesensor
(1994)
Rapid recovery of aphasia and deep dyslexia after extensive left-hemisphere damage in childhood
(1994)
Aspect in Contact
(1995)
Irland
(1995)
Linguistic Contacts Across the English Channel : the Case of the History of the Retroflex <r>
(1995)
Dynamic surface tension and surface shear rheology studies of mixed - lactoglobulin/tween 20 systems
(1995)
Evidence of extraneous surfactant adsorption altering adsorbed layer properties of b-lactoglobulin
(1995)
Eine empirische Studie zur Abhängigkeit der Managergehälter vom Unternehmenserfolg in Deutschland
(1995)
A close comparison of the use of language, style and method of composition of the sizable corpus of Old English and Old Irish vernacular sermons (10c and 11c) show that both cultures make use of a preaching rhetoric which is deeply indebted to oral styles of preaching and geared towards the aural reception of the spoken word. Both tend to resort to a flamboyant pastoralism and excel in elaborate verbal artistry. While received scholarship claims that the English were subject to Irish influence in this respect because of the existence Hiberno-Latin analogues, this short monograph argues that this is very unlikely. Rather both traditions are independently indebted to 7c to 9c Continental preaching styles, the evidence of which shows that there was both a plain preaching mode (the "fisherman's" mode) and an elaborate (or "Asian") one. The use of both was advocated,depending on the occasion, by St. Augustin's "De doctrina christiana." In the Insular context of vernacular preaching, the latter seems to have been functioned as a favoured art form.
Integration of titin into the sarcomeres of cultured differentiating human skeletal muscle cells
(1996)
Einleitung
(1996)
Morphological processing in Italian agrammatic speakers : eight experiments in lexical morphology
(1996)
The earliest types of versification of the Insular literatures in the early middles ages (Old English, Old Welsh, Old Irish, Middle Breton) were oral-derived, i.e. orally composed and intended for listening audiences. The written records of such early poems, poreserved in the manuscripts, still reflect the flexibility of the metriccal constraints. This type of poetry is characterised by the avoidance of the total identity of the recurrent phonetic features. Rhyme is 'only' near-rhyme, alliteration only near-alliteration, accentuality only near-accentual recurrence, syllabicity only near-syllabicity etc.. This type of oral-derived aesthetics requires a very fine ear for the distinction and appreciation of the metrical near-samenesses and probably a prolongued training in the acquisition of metrical skills on teh part of the poet. In the later written poetries, which were both literate in composition and reception ("reading"), the ear was replaced by the eye. THis seems ot have required identical recurrence of metrical ffeatures rather than near-identities, ultimately leading to forms like 'rime riche' (like in French poetry), which would have been considered to be cloying in the early oral(-derived) context. In other words, the aesthetic potential of the metrical constraints depends on the medium of communication.
Paul Mankin was one of three literature professors who taught at the University of Massachusetts at Amherst in the 1980s and who had attended Dylan Thomas' lecture tours at American universities thirty years earlier as students. They were particularly impressed by the power of Thomas' language and his forceful style of presentation. In this "Causerie" or interview recorded in 1985, Mankin speaks about the effect Thomas' performance at UCLA had on his own work. He also discusses the lasting value of Thomas' poetry and its impact on other poets.
High pressure X-ray diffraction, absorption, luminescence and Raman scattering study of Cs2MoS4
(1997)
Verteilung von Vitamin A und Retinol-Bindungs-Protein (RBP) in verschiedenen Geweben von Caniden
(1997)
At the suggestion of the then editor of 'Studia Celtica Japonica,' Professor Toshio Doi, this bibliography lists the returns of a questionnaire sent to all scholars in Germany who were actively involved in Celtic Studies between 1980 and 1995. They were asked to list all their publications in the field of Celtic Studies, so as to allow to carry out a survey of their research activities during this period. While most scholars kindly obliged by returning their lists, there were notable exceptions who never answered the query. Regretably, the present bibliography therefore contains important gaps, which, however, may be quite telling as far as the research situation in Germany was concerned during that period.
The great Old English epic 'Beowulf' has been dated to practically every century between the 6th and the 11th century, depending on the criteria of dating adopted and the approaches advocated by the respective scholars. As the text successfully avoids to provide definite cues or evidence for a definitive date, these scholarly attempts reveal more about the respective scholars' research interests than offering uncontroversial dates. The point of dating 'Beowulf' then seems to provide scholars with the opportunity to anchor their own personal understanding of the poem within the century of their own personal predilection.
DO in Contact?
(1997)
Periphrastic English constructions involving the verbs BE/HAVE + a nominalised verb form expressing [+imperfectivity] and [+perfectivity] have close analogues in the Insular Celtic languages, where Celtic analogues of the English verb BE + a prepositional construction marker + Verbal Noun are used. The two constructions in English and teh Celtic languages are not identical and cannot be so, because the Celtic languages do not feature present and past participles and English has no verbal nouns. But the two types of the periphrastic mode of expressing aspect are close enough to suggest either a shift scenario, a borrowing scenario and/or an areal spread by diffusion over a long period of time. Since Old English did not mark aspect, neither morphologically nor syntactically, but Old Welsh and Old Irish already did so syntactically, it is suggested here that a unilateral transfer process was involved here, which proceeded from the Celtic languages to the English language. Aspectual transfer is even more pronounced in the so-called 'Celtic Englishes,' where in addition to the periphrastic marking of [+ imperfectivity] and [+perfectivity] the marking of [+habituality] is a grammaticalised feature and is periphrastically expressed.
Contents: 1 Introduction 2 Formation and destruction of sporadic E-layers 3 Temporal variations of parameters of sporadic E-layers during earthquake preparation 3.1 Temporal variations of fbEs with time-scales of a few hours 3.2 Study of fbEs variations with characteristic time-scales of 0.5-3 hours 3.3 Variations of the parameters of sporadic E-layers with characteristic time-scales of 15-45 minutes 3.4 Sporadic E-layer variations with characteristic time-scales of 2-15 minutes 4 On the spatial scales of sporadic E-layer disturbances related to seismic activity 5 Complex experimental researches of the ionosphere, electromagnetic noise and the geomagnetic field 5.1 Ionospheric and electromagnetic phenomena of the Kayraccum earthquake in 1985 5.2 Comparison of anomalies with characteristic time-scales of 2-3 hours for ionospheric E- and F-layers, and temporal behaviour of electromagnetic noise emission intensity 5.3 Night airglow emissions in the E-region before earthquakes and sporadic E-layer variations 6 Physical models of lithosphere-ionosphere links 6.1 Lithosphere-ionosphere links due to AGW 6.2 Electromagnetic models for the lithosphere-ionosphere coupling 6.3 Sporadic E-layers as current generators 7 Discussion and conclusion
New physics with evanescent wave atomic mirrors : the van der Waals force and atomic diffraction
(1998)
After a brief introduction to the field of atom optics and to atomic mirrors, we present experimental results obtained in our group during the last two years while studying the reflection of rubidium atoms by an evanescent wave. These involve the first measurement of the van der Waals force between an atom in its ground state and a dielectric wall, as well as the demonstration of a reflection grating for atoms at normal incidence. We also consider the influence of quantum reflection and tunnelling phenomena. Further studies using the atomic mirror as a probe of the van der Waals interaction, and of very small surface roughness are briefly discussed.