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  • 1
    Keywords: Logic, Symbolic and mathematical ; Mathematics ; Mathematical logic. ; Mathematical Logic and Foundations ; Mathematics ; Konferenzschrift 1984 ; Rekursionstheorie
    Description / Table of Contents: Generators of the recursively enumerable degrees -- Kleene degrees of ultrafilters -- Recursion theory on strongly ?2 inadmissible ordinals -- Applications of the low-basis theorem in arithmetic -- Strong reducibilities in ?- and ?-recursion theory -- Embeddings and extensions of embeddings in the r.e. tt and wtt-degrees -- An immune partition of the ordinals -- An application of ? 2 1 -logic to descriptive set theory -- Probabilistic machines, oracles, and quantifiers -- Minimal polynomial degrees of nonrecursive sets -- Genericity for recursively enumerable sets -- Sets of everywhere singular functions -- Measure, ? 1 0 -classes and complete extensions of PA -- On the ordering of classes in high/low hierarchies -- Generic objects in recursion theory -- The structure of m-degrees -- Some open questions in recursion theory -- Absolute type 2 objects -- Recursion theoretic aspects of the dual ramsey theorem -- Reflection and the priority method in E-recursion theory -- Subrecursive ordinals.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XII, 420 p, online resource)
    ISBN: 9783540395966 , 9783540156734
    Series Statement: Lecture Notes in Mathematics 1141
    RVK:
    Language: English
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  • 2
    Keywords: Logic, Symbolic and mathematical Congresses
    Type of Medium: Online Resource
    Pages: vii, 375 Seiten
    Edition: [Amsterdam] Elsevier [2021?] 1 Online-Ressource Elsevier e-book collection on ScienceDirect
    ISBN: 9780444880222
    Series Statement: Studies in logic and the foundations of mathematics volume 129
    Language: English
    Note: Includes bibliographical references
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 53 (1988), S. 763-767 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 111 (1989), S. 8438-8446 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 156 (1985), S. 553-561 
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In ‘constant’ conditions, individuals of the polychaeteTyposyllis prolifera stolonize up to 18 times each at circalunar intervals (mean ∼31 days). The endogenous mechanism driving this reproduction rhythm exhibits the characteristics of a true ‘circa’-oscillator (circalunar clock): 1. Entrainment of cyclic sexual development (and ultimately stolonial swarming) to the lunar cycle has been demonstrated both in the field and in experimental conditions. Animals in a natural population tend to reproduce synchronously during the 2nd quarter phase of the moon. In asynchronous laboratory populations, ‘moonlight’ zeitgeber programs (some successive ‘moonlit’ nights every 30 days) cause entrainment, provided that the zeitgeber signals exceed a critical length (between 2 and 4 days). Above this value, the length of zeitgeber stimuli does not affect the quality of entrainment. The peaks of stolon abundance are phase-set by the cessation of nocturnal illumination (mean at 20 °C: 17.0 days after ‘moonoff’), independent of the length of the preceding ‘moonlit’ period. The temporal pattern of increasing entrainment in the course of repetitive stimulation permits a preliminary insight into the mechanism which causes adjustment of the clock. 2. Within the range of 15 to 25 °C, the freerunning period is temperature-compensated (Q 10=1.04). However, coupling between oscillator and overt rhythm is restricted to the (cyclic) initiation of stolonization processes. Stolon release follows at a temperature dependent interval. Changes in temperature thus result in phase-shifts of the overt rhythm of stolon release. 3. The oscillator runs essentially independent of the peripheral physiological processes involved in the manifestation of the reproduction rhythm (absence of feedback influences). Temperature and starvation influence the overt rhythm while the endogenous oscillator remains largely unaffected.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 159 (1986), S. 569-576 
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Lunar-rhythmic reproduction in the polychaeteTyposyllis prolifera is controlled by an endogenous circalunar timing system which compares well with circadian oscillators but lacks the degree of precision characteristic of the latters. Artificial moonlight cycles (some successive ‘moonlit’ nights every 30 days) act as zeitgeber. Some details of how ‘moonlight’ resets the reproduction rhythm have been studied: 1. ‘Moonlight’ applied continuously every night does not affect the period of the freerunning rhythm (31 days at 20° C). 2. Two series of pulse experiments were conducted: In the first series, worms (otherwise kept with absolutely dark nights) were perturbed at various circalunar phases by a complex signal consisting of ‘moonlight’ on four successive nights. In the second series, worms (previously kept with constantly ‘moonlit’ nights) were pulsed with simple ‘moon-off’ signals. Both types of experiment resulted in a phase-response curve (pulse-induced phase shifts as function of circalunar phase) that shows the general properties of circadian response curves. Phase shifts (advances and delays) caused by the complex 4-day ‘moonlight’ signals were equal to those effected by simple ‘moon-off’ stimuli given at circalunar phases coinciding with the ends of the complex pulses. 3. It is concluded that the decisive resetting signal for entrainment to a ‘moonlight’ cycle is afforded by the transition from ‘moonlit’ to dark nights (discrete entrainment by ‘moon-off’). The phase-response curves strongly support the idea that the circalunar timing system displays an essentially oscillating nature. The curves allow prediction of the observed phase relation between the entrained reproduction rhythm and the zeitgeber cycle. 4. The significance of the results for interpreting entrainment under natural conditions in a field population is discussed.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1420-911X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The programme “Discussions on Hypertension” is a programme for group treatment of obese essential hypertensives in medical practices on the basis of behavioural therapy. A co-operation model was developed between the Department for General Medicine of the “Medizinische Hochschule Hannover”, the Institute for Medical Psychology of the “Philipps-Universität Marburg” and the company Galenus Mannheim and was offered to doctors in general practice. The effects of the programme on the modifying of the risk profile for coronary heart disease was investigated in a controlled study in 137 patients by nine general practitioners, 81 patients were enrolled in the experimental group and 56 patients were assigned to a control group that was not using the programme. The experimental and control groups were comparable with respect to sociodemographic, psychological and medical parameters. Three months after completing the programme, the results of the study was shown in specific effect both on the psychological criteria of success (well-being, health knowledge, healthy behaviour, salt use and compliance) and in a reduction of the diastolic blood pressure in spite of a reduction of the antihypertensive drug treatment. The blood lipid levels (cholesterol and triglycerides) and the blood glucose level were also favourably affected. Patients in the experimental group had reduced their weight by an average of 5,6 kg. The patients in the control group only by 0,8 kg. Overall, there was a marked reduction in the proportion of patients with several risk factors in the experimental group, so that the programme can be attributed a preventitive effect.
    Abstract: Résumé Le programme «Dialogue sur l'hypertension» est un programme thérapeutique de groupe à l'intention des hypertendus essentiels obèses en pratique ambulatoire basé sur une thérapeutique du comportement. Il a été mis au point au sein d'un modèle de coopération entre le service de médecine générale de l'Ecole de médecine de Hanovre, l'Institut de psychologie médicale de l'Université Philipps de Marburg et la Maison Galenus Mannheim, puis mis à la disposition de praticiens. Dans le cadre d'une étude contrÔlée, on a examiné les effets du programme sur le profil de risque de maladies coronariennes chez 137 patients traités en cabinet chez neuf généralistes; 81 patients ont pris part au traitement de groupe, les 56 autres patients ont servi de groupe témoin. En ce qui concerne les paramètres sociodémographiques, psychologiques et médicaux, le groupe traité et le groupe témoin étaient comparables. Trois mois après la clÔture du programme, les résultats de l'étude montrent un effet spécifique du programme aussi bien du point de vue du succès psychologique (état général, prise de conscience de sa propre santé, style de vie, consommation de sel et prise régulière de la médication) que de la réduction de la pression sanguine diastolique (ceci, malgré une diminution de la médication antihypertensive). Les taux de lipides sanguins (cholestérol et triglycérides) et de la glycémie sont également influencés favorablement. Les patients du groupe traité ont réduit leur poids de 5,6 kg en moyenne; les patients du groupe témoin, de 0,8 kg seulement. Dans l'ensemble, on trouve dans le groupe traité une amélioration nette du profil de risque, ce qui fait conclure à un effet préventif du programme testé.
    Notes: Zusammenfassung Das Programm «Hypertonie im Gespräch» ist ein Gruppenbehandlungsprogramm für adipöse essentielle Hypertoniker in der ärztlichen Praxis auf verhaltenstherapeutischer Grundlage. In einer kontrollierten Studie wurden die Effekte des Programms zur Beeinflussung des Risikoprofils für Koronarerkrankungen an 137 Patienten von 9 in der Allgemeinversorgung tätigen ärzten überprüft, wobei 81 Patienten der Versuchsgruppe und 56 Patienten einer nicht mit dem Programm behandelten Kontrollgruppe zugeordnet wurden. Versuchs- und Kontrollgruppe sind hinsichtlich soziodemographischer, psychologischer und medizinischer Parameter strukturgleich. Als Ergebnis der Studie zeigt sich 3 Monate nach Beendigung des Programms ein spezifischer Effekt sowohl bei den psychologischen Erfolgskriterien (Befinden, Gesundheitswissen, Gesundheitsverhalten, Salzen und Compliance) als auch bei der Reduktion des diastolischen Blutdrucks trotz einer Reduktion der antihypertensiven Medikation. Blutfettspiegel (Cholesterin und Triglyceride) sowie Blutzuckerspiegel werden günstig beeinflusst. Patienten der Versuchsgruppe haben im Mittel ihr Gewicht um 5,6 kg reduziert, Patienten der Kontrollgruppe ausschliesslich um 0,8 kg. Insgesamt zeigt sich in der Versuchsgruppe eine deutliche Reduktion des Anteils von Patienten mit mehreren Risikofaktoren, so dass dem Programm ein präventiver Effekt zugeschrieben werden kann.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1420-911X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Im Jahre 1985 wurden 998 (734 Männer, 264 Frauen) Herzinfarkterkrankungsfälle bei 25- bis 74jährigen Einwohnern der Studienregion (151489 Männer und 171093 Frauen) registriert, von denen 583 Personen (403 Männer und 180 Frauen) innerhalb von 28 Tagen verstarben. Die klinische Diagnose Herzinfarkt und auch die Todesursache «Koronare Herzkrankheit» wurden anhand der MONICA-Diagnose-Kriterien (akute Symptomatik, Enzymhöhe, EKG-Verlauf und bei Verstorbenen das Autopsieergebnis) validiert und nach MONICA-Diagnose-Kategorien eingeteilt. Ein erster Vergleich mit 3 weiteren MONICA-Zentren zeigt deutlich regionale Differenzen bei den «attack-rates» und der 28-Tage-Letalität, während die Herzinfarktmortalität weniger differiert. Die Herzinfarkterkrankungs- und sterbehäufigkeit der 25- bis 74jährigen Studienbevölkerung ist relativ niedrig (Erstinfarkthäufigkeit: 302 für Männer, 113 für Frauen; Fallhäufigkeit: 444 für Männer, 138 für Frauen; Sterberate: 241 für Männer, 92 für Frauen; jeweils je 100000 der Bevölkerung gleichen Geschlechts). Die 28-Tage-Letalität ist mit 54% der männlichen und 67% der weiblichen Herzinfarkterkrankten vergleichsweise hoch.
    Abstract: Résumé Chez les habitants de la région augsbourgeoise âgés de 25 à 74 ans (151489 hommes et 171093 femmes), 998 cas (734 hommes, 264 femmes) de malades de l'infarctus du myocarde ont été recensés, dont 583 (403 hommes et 180 femmes) sont décédés en 28 jours. Le diagnostic clinique de l'infarctus du myocarde aussi bien que la cause du décès par «cardiopathie coronaire» ont été évalués et classés à l'aide de catégories diagnostiques MONICA (symptÔmes aigus, taux d'enzyme, tracés-électrocardiographe et les résultats de l'autopsie des décédés). Une première comparaison avec trois autres centres MONICA présente une différence régionale nette en ce qui concerne la fréquence des crises cardiaques et la létalité de 28 jours, tandis qu'elle est moins prononcée quant à la mortalité par infarctus du myocarde. La maladie de l'infarctus et les décès qui en résultent sont relativement peu fréquents dans une population âgée de 25 à 74 ans (fréquence du premier infarctus: 302 hommes, 113 femmes; fréquence de cas: 444 hommes, 138 femmes; Taux de décès par infarctus du myocarde: 241 hommes, 92 femmes; sur 100000 respectivement d'une population du même sexe). La létalité de 28 jours représente un taux relativement élevé avec 54% des hommes et 67% des femmes malades de l'infarctus.
    Notes: Summary In the year 1985, 998 (734 men, 264 women) cases of acute coronary events were registered among the 25–74 year-old residents of the study area (151,489 men and 171,093 women) of whom 583 (403 men, 180 women) died within 28 days (case fatality). Both AMI as a clinical diagnosis and AMI as a cause of death are validated by defined MONICA diagnostic criteria (acute symptoms, enzyme level, ECG, autopsy diagnosis). The AMI-risk (MONICA diagnostic categories 1, 2, 3, 9) in the study area Augsburg is relatively low (incidence: men 302, women 113; attack rate: men 444, women 138; death rate: men 241, women 92; all per 100,000 for each group). The 28-day case fatality is comparatively high (men 54%, women 67%). A comparison of the Augsburg rates with those of three other centers shows that the Augsburg figures are in the lower range.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 859-862 
    ISSN: 0170-2041
    Keywords: Thiophen-3-ol, tetrahydro-2-methyl- ; Flavor substances, chiral ; Chirality and odor ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Stereoisomeric Flavor Substances XXXI1). - Tetrahydro-2-methylthiophen-3-ol - Structure and Properties of the StereoisomersTetrahydro-2-methylthiophen-3-ol (6) has been synthesized and separated by liquid chromatography to yield cis (6a/6a′) and trans isomers (6b/6b′). Using (S)-tetrahydro-5-oxo-2-furancarboxylic acid chloride, 6a/6a′ and 6b/6b′ are transformed into the diastereomeric esters 7-10 which are separated by liquid chromatography. Hydrolysis of the esters yields the optically pure stereoisomers 6a, 6a′, 6b, and 6b′. Absolute configuration and sensory characteristics of these stereoisomers are given.
    Notes: Tetrahydro-2-methylthiophen-3-ol (6) wurde synthetisiert und flüssigkeitschromatographisch in cis- (6a/6a′) und trans-Isomere (6b/6b′) getrennt. Durch Umsetzung mit (S)-Tetrahydro-5-oxo-2-furancarbonsäurechlorid werden aus 6a/6a′ und 6b/6b′ die diastereomeren Ester 7-10 gebildet, deren flüssigkeitschromatographische Trennung und anschließende Hydrolyse zu den optisch reinen Stereoisomeren 6a, 6a′, 6b und 6b′ führt. Absolute Konfiguration und sensorische Bewertung der Stereoisomeren werden mitgeteilt.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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