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Article
Open AccessHigh-Strength Dissimilar Welds Between a NiTi Shape Memory Alloy and Titanium Obtained by Intermixing Niobium Using Pulsed Laser Beam Welding
Joining of NiTi shape memory alloys with commercially pure titanium (Ti) is of great interest for manifold industrial applications. However, dissimilar fusion welding of these materials is associated with the ...
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Article
Open AccessElectron Beam Welding of Hot-Rolled Fe–Mn–Al–Ni Shape Memory Alloy Sheets
The present study focuses on the weldability of hot-rolled Fe–Mn–Al–Ni shape memory alloy sheets by vacuum electron beam welding. Tailored process-specific welding parameters, such as preheating with electron ...
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Article
Open AccessGrain growth and precipitation behaviour of AISI 430 ferritic stainless steel subjected to pulsed laser beam welding using free-form pulse sha**
Ferritic stainless steels are prone to grain coarsening and precipitation of chromium-rich grain boundary phases during fusion welding, which increase intergranular corrosion susceptibility. State-of-the-art t...
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Article
Nickel in silicon studied by electron paramagnetic resonance
We have investigated nickel in silicon samples with a wide range of initial do** concentrations by EPR, DLTS and photo-EPR techniques. Our results show that the two different Ni-centers which were observed p...
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Article
Is the antidepressive effect of sleep deprivation stabilized by a three day phase advance of the sleep period?
Sleep deprivation (SD) induces a rapid amelioration of mood in about 60 % of depressed patients. After the next night of sleep, however, most patients experience a relapse. Previous studies demonstrated that ...
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Article
Optical metropolitan DWDM networks an overview
The paper deals with the subject of how to build a core network in the current technology scenario. We start with an overview ofwhat we consider a core network, not in an abstract way but referring to real cou...
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Chapter
Reversal of Antidepressant Sleep Deprivation Effects by Daytime Naps
Total sleep deprivation (TSD) is an effective treatment of major depression, with a response rate of about 50% - 60%. In contrast to other antidepressant treatments, the therapeutic effect develops rapidly, bu...
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Article
Nocturnal sleep in huntington's disease
Nocturnal sleep was studied in 16 inpatients with Huntington's disease. In comparison with healthy controls, patients exhibited a disturbed sleep pattern with increased sleep onset latency, reduced sleep effic...
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Chapter
Partnership Problems as Causes of Endogenous and Neurotic Depressions
Content analysis of biographic interviews with endogenous and neurotic depressives shows that problems in a partnership carry particular weight as triggers of depression. In this respect, however, separations ...
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Chapter
Schlaf und Körperbewegungen bei Chorea Huntington
Es gibt bislang nur wenige Untersuchungen zum Nachtschlaf bei Chorea Huntington. Bisher vorliegende Ergebnisse sind uneinheitlich. Einige Autoren fanden unspezifische Schlafveränderungen, z.B. weniger Tiefschl...
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Chapter and Conference Paper
Welche Bedeutung haben Antidepressiva in der Behandlung von chronischen Schlafstörungen?
Die Behandlung chronischer Schlafstörungen mit Antidepressiva ist noch weitgehend Neuland. Es gibt eine Reihe von Übersichtsarbeiten zur Insomniebehandlung, in denen Antidepressiva in der Regel nur für Schlafs...
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Chapter
Mathematische Auswertung Ergospirometrischer Messungen
Unter Ergospirometrie versteht man die Messung des Atemminutenvolumens, der Sauerstoffaufnahme und der Kohlendioxydabgabe unter körperlicher Belastung. Während noch vor wenigen Jahren die Berechnung der Primär...
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Article
194 000 Abstriche nach Papanicolaou —Eine retrospektive Studie über 10 Jahre Zytologie an der Universitäts-Frauenklinik in Kiel
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Article
Suppression of pupal esterase activity inAedes aegypti (Diptera: Culicidae) by an insect growth regulator
Changes in non-specific esterases ofAedes aegypti were noted during pupal development. One esterase band was found to increase markedly within 3 h of pupation and this increase in activity was suppressed by prior...