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  1. Book ; Thesis: Ökologische Risikoabschätzung von Pestiziden in kleinen Fließgewässern anhand von Felduntersuchungen in Mittel- und Nordeuropa

    Schäfer, Ralf Bernhard

    (Dissertation / Helmholtz-Zentrum für Umweltforschung - UFZ ; 2008,2)

    2008  

    Author's details Ralf Bernhard Schäfer
    Series title Dissertation / Helmholtz-Zentrum für Umweltforschung - UFZ ; 2008,2
    Dissertation / Helmholtz-Zentrum für Umweltforschung, UFZ
    Collection Dissertation / Helmholtz-Zentrum für Umweltforschung, UFZ
    Language German
    Size 159 S. : graph. Darst., Kt.
    Publisher Helmholtz-Zentrum für Umweltforschung - UFZ
    Publishing place Leipzig
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Lüneburg, Univ., Diss
    Note Beiträge teilw. engl., teilw. deutsch
    HBZ-ID HT015468851
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    088/404 available for loan (reading room) Freihandmagazin (U1)

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  2. Book: Pestizide in niedersächsischen Fließgewässern

    Schäfer, Ralf Bernhard

    Auswertung von NLÖ-Daten der Jahre 1994 - 2001

    (Oberirdische Gewässer ; 19)

    2003  

    Author's details Ralf Schäfer
    Series title Oberirdische Gewässer ; 19
    Collection
    Keywords Niedersachsen ; Fließgewässer ; Pestizidbelastung ; Geschichte 1994-2001
    Subject Pestizid ; Fließendes Gewässer ; Wasserlauf
    Language German
    Size 48 S. : graph. Darst.
    Edition 1. Aufl
    Publisher Nieders. Landesamt für Ökologie u.a.
    Publishing place Hildesheim
    Publishing country Germany
    Document type Book
    HBZ-ID HT013789153
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    034/1052 available for loan (reading room) Freihandmagazin (U1)

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  3. Article: Die frühzeitige Diagnostik von Schlafbruxismus - ein validiertes anwenderfreundliches Verfahren

    Ommerborn, Michelle Alicia / Schäfer, Ralf

    Prophylaxe impuls

    2023  Volume 27, Issue 2, Page(s) 70

    Language German
    Document type Article
    ZDB-ID 1379631-8
    ISSN 1439-9938
    Database Current Contents Medicine

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5026: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  4. Book ; Thesis: Die Absatzeffekte von Verkaufsförderung im Lebensmitteleinzelhandel

    Schäfer, Ralf

    (Giessener Schriften zur Agrar- und Ernährungswirtschaft ; H. 26)

    1997  

    Author's details eingereicht von Ralf Schäfer
    Series title Giessener Schriften zur Agrar- und Ernährungswirtschaft ; H. 26
    Gießener Schriften zur Agrar- und Ernährungswirtschaft
    Collection Gießener Schriften zur Agrar- und Ernährungswirtschaft
    Keywords Lebensmitteleinzelhandel ; Wein ; Marketing ; Sales-promotion
    Subject Promotions ; Sales Promotion ; Verkaufsförderung ; Absatzförderung ; Absatzwirtschaft ; Konsumgütermarketing ; Marketingpolitik ; Verbrauchsgut ; Verbrauchsgütermarketing ; Absatzpolitik ; Absatzplanung ; Verkaufsplanung ; Weine ; Lebensmittel ; Nahrungsmitteleinzelhandel
    Size IX, 208 S. : graph. Darst.
    Publisher DLG-Verl
    Publishing place Frankfurt (Main)
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Giessen, Univ., Diss., 1997
    HBZ-ID HT008168142
    ISBN 3-7690-4625-0 ; 978-3-7690-4625-0
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    988/771 available for loan (reading room) Freihandmagazin (U1)

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  5. Article: Association between Psychological Distress and Possible, Probable, and Definite Sleep Bruxism-A Comparison of Approved Diagnostic Procedures.

    Walentek, Nicole Pascale / Schäfer, Ralf / Bergmann, Nora / Franken, Michael / Ommerborn, Michelle Alicia

    Journal of clinical medicine

    2024  Volume 13, Issue 2

    Abstract: 1) Background: The relationship between sleep bruxism (SB) and psychological distress has been investigated in numerous studies and is heterogeneous. Different diagnostic procedures have been applied to determine SB. The aim of this study was to ... ...

    Abstract (1) Background: The relationship between sleep bruxism (SB) and psychological distress has been investigated in numerous studies and is heterogeneous. Different diagnostic procedures have been applied to determine SB. The aim of this study was to directly compare the association between psychological distress and SB diagnosed by different accepted methods. (2) Methods: Data of
    Language English
    Publishing date 2024-01-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm13020638
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Measuring facial mimicry: Affdex vs. EMG.

    Westermann, Jan-Frederik / Schäfer, Ralf / Nordmann, Marc / Richter, Peter / Müller, Tobias / Franz, Matthias

    PloS one

    2024  Volume 19, Issue 1, Page(s) e0290569

    Abstract: Facial mimicry is the automatic imitation of the facial affect expressions of others. It serves as an important component of interpersonal communication and affective co-experience. Facial mimicry has so far been measured by Electromyography (EMG), which ...

    Abstract Facial mimicry is the automatic imitation of the facial affect expressions of others. It serves as an important component of interpersonal communication and affective co-experience. Facial mimicry has so far been measured by Electromyography (EMG), which requires a complex measuring apparatus. Recently, software for measuring facial expressions have become available, but it is still unclear how well it is suited for measuring facial mimicry. This study investigates the comparability of the automated facial coding software Affdex with EMG for measuring facial mimicry. For this purpose, facial mimicry was induced in 33 subjects by presenting naturalistic affect-expressive video sequences (anger, joy). The response of the subjects is measured simultaneously by facial EMG (corrugator supercilii muscle, zygomaticus major muscle) and by Affdex (action units lip corner puller and brow lowerer and affects joy and anger). Subsequently, the correlations between the measurement results of EMG and Affdex were calculated. After the presentation of the joy stimulus, there was an increase in zygomaticus muscle activity (EMG) about 400 ms after stimulus onset and an increase in joy and lip corner puller activity (Affdex) about 1200 ms after stimulus onset. The joy and the lip corner puller activity detected by Affdex correlate significantly with the EMG activity. After presentation of the anger stimulus, corrugator muscle activity (EMG) also increased approximately 400 ms after stimulus onset, whereas anger and brow lowerer activity (Affdex) showed no response. During the entire measurement interval, anger activity and brow lowerer activity (Affdex) did not correlate with corrugator muscle activity (EMG). Using Affdex, the facial mimicry response to a joy stimulus can be measured, but it is detected approximately 800 ms later compared to the EMG. Thus, electromyography remains the tool of choice for studying subtle mimic processes like facial mimicry.
    MeSH term(s) Humans ; Emotions/physiology ; Electromyography ; Anger/physiology ; Face ; Facial Muscles/physiology ; Facial Expression ; Antioxidants
    Chemical Substances Antioxidants
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0290569
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Trophic transfer of polyunsaturated fatty acids across the aquatic-terrestrial interface: An experimental tritrophic food chain approach.

    Ohler, Katharina / Schreiner, Verena C / Martin-Creuzburg, Dominik / Schäfer, Ralf B

    Ecology and evolution

    2023  Volume 13, Issue 3, Page(s) e9927

    Abstract: Aquatic and their adjacent terrestrial ecosystems are linked via the flux of organic and inorganic matter. Emergent aquatic insects are recognized as high-quality food for terrestrial predators, because they provide more physiologically relevant long- ... ...

    Abstract Aquatic and their adjacent terrestrial ecosystems are linked via the flux of organic and inorganic matter. Emergent aquatic insects are recognized as high-quality food for terrestrial predators, because they provide more physiologically relevant long-chain polyunsaturated fatty acids (PUFA) than terrestrial insects. The effects of dietary PUFA on terrestrial predators have been explored mainly in feeding trials conducted under controlled laboratory conditions, hampering the assessment of the ecological relevance of dietary PUFA deficiencies under field conditions. We assessed the PUFA transfer across the aquatic-terrestrial interface and the consequences for terrestrial riparian predators in two outdoor microcosm experiments. We established simplified tritrophic food chains, consisting of one of four basic food sources, an intermediary collector gatherer (
    Language English
    Publishing date 2023-03-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2635675-2
    ISSN 2045-7758
    ISSN 2045-7758
    DOI 10.1002/ece3.9927
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Cascading impacts of changes in subsidy quality on recipient ecosystem functioning.

    Osakpolor, Stephen E / Manfrin, Alessandro / Leroux, Shawn J / Schäfer, Ralf B

    Ecology

    2023  Volume 104, Issue 5, Page(s) e4023

    Abstract: Resource quantity and quality can differ between adjacent ecosystems, and these differences can impact subsidies exchanged between ecosystems. The quantity and quality of subsidies are rapidly changing in response to stressors associated with global ... ...

    Abstract Resource quantity and quality can differ between adjacent ecosystems, and these differences can impact subsidies exchanged between ecosystems. The quantity and quality of subsidies are rapidly changing in response to stressors associated with global environmental change, but while we have models to predict the effects of changes in subsidy quantity, we currently lack models to predict the effects of changes in subsidy quality on recipient ecosystem functioning. We developed a novel model to predict the effects of subsidy quality on recipient ecosystem biomass distribution, recycling, production, and efficiency. We parameterized the model for a case study of a riparian ecosystem subsidized by pulsed emergent aquatic insects. In this case study we focused on a common measure of subsidy quality that differs between riparian and aquatic ecosystems: the higher content of long-chain polyunsaturated fatty acids (PUFAs) in aquatic ecosystems. We analyzed how changes in the PUFA concentration of aquatic subsidies affect the dynamics in biomass stocks and functions of the riparian ecosystem. We also conducted a global sensitivity analysis to identify key drivers of subsidy impacts. Our analysis showed that subsidy quality increased the functioning of the recipient ecosystem. Recycling increased more strongly than production per unit subsidy quality increase, meaning there was a threshold where an increase in subsidy quality led to stronger effects of subsidies on recycling relative to the production of the recipient ecosystem. Our predictions were most sensitive to basal nutrient input, highlighting the relevance of recipient ecosystem nutrient levels to understanding the effects of ecosystem connections. We argue that recipient ecosystems that rely on high-quality subsidies, such as aquatic-terrestrial ecotones, are highly sensitive to changes in subsidy-recipient ecosystem connections. Our novel model unifies the subsidy hypothesis and food quality hypothesis and provides testable predictions to understand the effects of ecosystem connections on ecosystem functioning under global changes.
    MeSH term(s) Animals ; Ecosystem ; Food Chain ; Biomass ; Insecta
    Language English
    Publishing date 2023-03-27
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2010140-5
    ISSN 1939-9170 ; 0012-9658
    ISSN (online) 1939-9170
    ISSN 0012-9658
    DOI 10.1002/ecy.4023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Ätiologische Aspekte - Psychophysiologie und Informationsverarbeitung

    Schäfer, Ralf / Franz, Matthias

    (In: Rufer, Michael; Grabe, Hans Jörgen (Ed.), Alexithymie: Eine Störung der Affektregulation. Konzepte, Klinik und Therapie (S. 75-93). Göttingen: Hogrefe Publishing)

    2022  

    Abstract: Durch die Aufzeichnung von elektrophysiologischen Signalen während der Verarbeitung von emotionaler Information bei alexithymen Menschen können wichtige Erkenntnisse gewonnen werden. Mithilfe solcher Daten lassen sich - zumindest ansatzweise objektiv - ... ...

    Title translation Etiological aspects - Psychophysiology and information processing (DeepL)
    Series title In: Rufer, Michael; Grabe, Hans Jörgen (Ed.), Alexithymie: Eine Störung der Affektregulation. Konzepte, Klinik und Therapie (S. 75-93). Göttingen: Hogrefe Publishing
    Abstract Durch die Aufzeichnung von elektrophysiologischen Signalen während der Verarbeitung von emotionaler Information bei alexithymen Menschen können wichtige Erkenntnisse gewonnen werden. Mithilfe solcher Daten lassen sich - zumindest ansatzweise objektiv - theoretische Annahmen zur Ätiologie alexithymer Merkmale überprüfen. Psychophysiologische Daten können außerdem unter anderem darüber Auskunft geben, ob bei alexithymen Personen vegetative oder auch zentralnervöse Veränderungen vorliegen, die möglicherweise die Ausbildung und Aufrechterhaltung von körperlichen und seelischen Krankheitssymptomen begünstigen. Die auf diesem Weg gewonnenen Erkenntnisse tragen dazu bei, alexithyme Merkmale und damit verbundene klinische Symptome besser zu verstehen, und können langfristig dazu dienen, bessere therapeutische Ansätze zu entwickeln, um alexithymen Menschen zu helfen.
    Keywords Alexithymia ; Alexithymie ; Brain Connectivity ; Electrophysiology ; Elektrophysiologie ; Etiology ; Konnektivität (Gehirn) ; Neurophysiologie ; Neurophysiology ; Psychophysiologie ; Psychophysiology ; Ätiologie
    Language German
    Document type Article
    Database PSYNDEX

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  10. Article: Vom Affekt zum Gefühl zum Mitgefühl

    Franz, Matthias / Schäfer, Ralf

    Entwicklungspsychologische und neurowissenschaftliche Aspekte der Alexithymie

    (In: Rufer, Michael; Grabe, Hans Jörgen (Ed.), Alexithymie: Eine Störung der Affektregulation. Konzepte, Klinik und Therapie (S. 43-62). Göttingen: Hogrefe Publishing)

    2022  

    Abstract: Die Entwicklung der Fähigkeit, eigene Affektzustände als Gefühle differenziert wahrzunehmen und sprachlich zu kommunizieren, beruht auf Erfahrungen im affektgesteuerten Austausch zwischen Kind und elterlichen Bezugspersonen; die verinnerlichten ... ...

    Title translation From affect to emotion to compassion: Developmental and neuroscientific aspects of alexithymia (DeepL)
    Series title In: Rufer, Michael; Grabe, Hans Jörgen (Ed.), Alexithymie: Eine Störung der Affektregulation. Konzepte, Klinik und Therapie (S. 43-62). Göttingen: Hogrefe Publishing
    Abstract Die Entwicklung der Fähigkeit, eigene Affektzustände als Gefühle differenziert wahrzunehmen und sprachlich zu kommunizieren, beruht auf Erfahrungen im affektgesteuerten Austausch zwischen Kind und elterlichen Bezugspersonen; die verinnerlichten affektbezogenen Regulationserfahrungen des Kindes manifestieren sich in unterschiedlichen Bindungsmustern und resultieren letztendlich in einer mehr oder weniger alexithymen Wahrnehmung, Verarbeitung und Kommunikation von Affektzuständen. In diesem Kontext wird die Bedeutung der Basisaffekte für die Entwicklung einer sicheren Bindung, einer kompetenten Affektregulation und Mentalisierungsfähigkeit beschrieben. Am Beispiel der fazialen Mimikry, also der Fähigkeit, auf affektexpressive Mimik mimisch resonant zu reagieren, werden die Auswirkungen alexithymer Beeinträchtigungen aufgezeigt.
    Keywords Alexithymia ; Alexithymie ; Attachment Behavior ; Bindungsverhalten ; Compassion ; Emotional Development ; Emotional Regulation ; Emotionale Entwicklung ; Emotionsregulation ; Imitation (Learning) ; Imitationslernen ; Mentalisierung ; Mentalization ; Mitgefühl
    Language German
    Document type Article
    Database PSYNDEX

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