117 research outputs found

    Das Jahr des Lichtes

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    PTB-Mitteilungen. Band 125 (2015), Heft 4. ISSN 0030-834X1.: Stefan Kück und Armin Sperling: Einführung in die Metrologie des Lichtes. doi: 10.7795/310.20150401 http://dx.doi.org/10.7795/310.20150401 2.: Armin Sperling: Die Candela als Maßeinheit des Lichtes. doi: 10.7795/310.20150402 http://dx.doi.org/10.7795/310.20150402 3.: Detlef Lindner und Stefan Winter: Rückführung in der Photometrie - die Realisierung und Rückführung der Candela . doi: 10.7795/310.20150403 http://dx.doi.org/10.7795/310.20150403 4.: Matthias Lindemann: Kurze Geschichte der Goniophotometrie in der PTB. doi: 10.7795/310.20150404 http://dx.doi.org/10.7795/310.20150404 5.: Thorsten Gerloff: Metrologie für moderne Lichtquellen: LEDs und OLEDs. doi: 10.7795/310.20150405 http://dx.doi.org/10.7795/310.20150405 6.: Egbert Buhr, Alfred Schirmacher und Andreas Höpe: Effektpigmente: Eine Herausforderung für die optische Messtechnik. doi: 10.7795/310.20150406 http://dx.doi.org/10.7795/310.20150406 7.: Impressum

    "Dem hässlichen Angesicht von Rassismus und Apartheid widerstehen." Momentaufnahmen eines interkulturellen Lernprojekts.

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    Der Beitrag rekonstruiert eine Lerneinheit im theologischen Weiterbildungsprogramm für Leitende afrikanischer Migrationskirchen an der Missionsakademie an der Universität Hamburg (2002). Dozentin dieser Einheit zu Rassismus und interkulturellem, ökumenischen Lernen im Zusammenhang von Migrationskirchen war die 2013 verstorbene Roswith Gerloff, einer Wegbereiterin theologischer Weiterbildungsprojekte im Kontext von Migrationskirchen in Europa

    Investigation of the interaction between corticomuscular coherence, motor precision and perceived difficulty in wrist flexion and extension

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    Includes abstract.Includes bibliographical references.Recently, behavioural (motor precision) differences were reported between isometric wrist flexion and extension. Neurophysiological as well as clinical differences have also been reported between these antagonistic movements. Corticomuscular coherence (CMC), i.e. the frequency specific temporal coupling between the electroencephalogram (EEG) and electromyogram (EMG) recorded during isometric force production, reflects the functional connectivity between cortex and muscle. A single muscle (flexor digitorum superficialis) study suggests a positive correlation between 15-35 Hz (beta) CMC and motor precision of the muscle. Yet, no study has simultaneously compared CMC and motor precision between wrist flexion and extension. Task perceived difficulty, which is a perceptual variable, may influence both motor precision and CMC, but has not been studied yet. The main aim of the present study was to investigate the interaction between CMC, motor precision and perceived difficulty in isometric wrist flexion and extension tasks

    Pancreas – Non-Alcoholic Constituents and Their Effects

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    Alcoholic beverages contain numerous non-alcoholic compounds that could have beneficial or pathological effects. For example, up to now in beer more than 2,000 and in wine more than 1,000 organic and inorganic constituents have been identified. Whereas the role of alcohol (ethanol) in the development of pancreatic diseases – in particular acute and chronic pancreatitis – has been intensively investigated, only little is known about the effects of non-alcoholic compounds in this context. Some of the non-alcoholic constituents have been shown to be biologically active, although discussions of the results in appropriate publications were often not performed with regard to their consumption as a mixture in alcoholic beverages. In this article we provide an overview about the newest data concerning the effect of non-alcoholic constituents of alcoholic beverages, especially of beer, on pancreatic secretion and their possible role in alcoholic pancreatitis. The data indicate that non-alcoholic constituents of beer stimulate pancreatic enzyme secretion in humans and rats, at least in part, by direct action on pancreatic acinar cells. However, there is accumulating evidence that non-alcoholic compounds of alcoholic beverages exert different effects on the pancreas. The effects and mechanisms of most single compounds and their combinations are still unknown and thus caution is required in attempting to draw firm conclusions on the effect of non-alcoholic compounds of alcoholic beverages on defining alcoholic etiology of pancreatitis.</jats:p

    Alcohol and Smoking

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    The WHO ranks smoking and alcohol consumption as the first and third leading causes of the global burden of disease in industrialized countries, using disability-adjusted life years (DALYs) as a combined measure of premature death and disability. Smoking is responsible for 12.2% of all DALYs and alcohol consumption for 9.2%. For example in Germany, annually 110,000–140,000 humans die prematurely because of cigarette smoking and 40,000 because of alcohol drinking. In Europe and the USA, more than 20% of all hospitalized men and more than 9% of all hospitalized women suffer from alcohol-associated diseases. In Germany, about 2.0 million people in the age group 18–64 years (3.8% of all Germans) are alcohol abusers and 1.3 million people (2.4%) are alcohol-dependent. Alcohol can cause acute as well as chronic damage in nearly all body organs. Smoking damages also nearly every human body organ and is worldwide the most important single preventable health risk factor as well as the main cause for premature mortality in industrial countries. One third of the adult Germans as well as of the world population are active smokers; men smoke more frequently than women (34.0 vs. 25.1%). In this review a short overview will be given on the most important deleterious effects of alcohol and smoking. The most recent data about the pathophysiological relevance of non-alcoholic compounds of alcoholic beverages will also be discussed.</jats:p
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