GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Publikationsart
Verlag/Herausgeber
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    International journal of biometeorology 18 (1974), S. 1-15 
    ISSN: 1432-1254
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Über eine einfache physikalische Theorie wurde ein Temperaturindex (SET*) abgeleitet, der als biometeorologischer Index für das Wärmeunbehagen des Menschen benutzt werden kann und auf einer gültigen physiologischen Grundlage beruht. Der SET* Index bezieht sich auf eine Standardumwelt. Er wurde als Mass für Warm- und Kaltunbehagen experimentell an sitzenden Personen unter wechselnden Bedingungen von Strahlungswärme und Trocken- und Feuchttemperaturen geprüft. Die Bezugsumwelt ist gleich der, wie sie im täglichen Leben des Menschen normalerweise gegeben ist bei leichter Bekleidung (0,6 clo) und einer Luftbewegung von 0, 25 – 0, 3 m/s ist.
    Kurzfassung: Resume On a mis au point un indice de température (SET*), dérivé rationnellement et qui peut être utilisé comme indice biométéorologique d'inconfort thermique pour l'homme. L'indice SET* découle d'une théorie physique simple et a une base physiologique valable. Il a en outre été mis à l'épreuve expérimentalement, par rapport a un environnement standard. Il représente alors une valeur chiffrée de l'inconfort dû aussi bien au froid qu'au chaud et ressenti par des sujets assis soumis à des conditions variables de rayonnement, de température et d'humidité. L'environnement de référence est celui que subit un individu légèrement habillé (clo = 0, 6) dans son activité journalière par un courant d'air de 0, 25 à 0, 3 m/s.
    Notizen: Abstract A rationally derived temperature index (SET*) which can be used as a biometeorological index of man's thermal discomfort has been developed by simple physical theory and has a valid physiological basis. The SET* index, when referred to a standard environment, has been tested experimentally as a measure of warm and cold discomfort for sedentary subjects under varying conditions of radiant heat and dry and wet bulb temperatures. The reference environment is common to one normally experienced in man's daily living while wearing 0.6 clo with an air movement of 0.25–0.3 m/s.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    International journal of biometeorology 22 (1978), S. 177-189 
    ISSN: 1432-1254
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie , Physik
    Notizen: Abstract A method of direct measurement of the heat and vapor transfer properties of clothing is described when worn in situ by human subjects during rest and exercise. Additional experimental observations were used to verify that a model for predicting Fpcl is reasonably accurate. From the thermal efficiency factor (Fcl), derived from $$\bar T$$ s and Tcl measurements, an effective value for Iclo can be determined and thus vapor permeation efficiency (Fpcl) can be predicted. A single coefficient (ψ) that characterizes the boundary environment over the skin surface is the ratio (hFcl)/(heFpcl) and is determined for any environment in terms of directly observed Fcl factor or clo value and relative air movement concerned. Ultimately,ψ-factor may be used as a key biometeorological parameter to describe any heat balance condition graphically on a psychrometric chart. Its usefulness is also evident in prediction of the probable combination of operative temperature and humidity necessary for thermal acceptable zones, the limits for evaporative regulation, and the zone in which some degree of thermal regulatory failure can be expected.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Publikationsdatum: 2019-01-22
    Beschreibung: This study reports changes in ascorbic acid (AA) in anchoveta eggs, copepods and zooplankton during the 2006, 2007 and 2009 main spawning seasons in the coastal area of the central Humboldt Current System, Chile. Anchoveta eggs, copepods and total zooplankton community shared a seasonal variation and an increasing trend in AA concentration from winter through spring which was associated with the spring diatom bloom. The lineal relationship observed between AA concentration in anchoveta eggs, chlorophyll a and Sea Surface Temperature (SST) suggests that the increase in phytoplankton abundance could also increase the amount of AA in the spawning female anchoveta incorporated through tissue, thus increasing the concentration in their eggs. Ascorbic acid concentrations in copepods presented size (weight) dependence. Small copepods (e.g. Acartia, Oithona) had AA concentrations two orders of magnitude higher than the heavier weight class copepods (e.g. Calanus, Rhincalanus). Results of the determination of glutathione and the antioxidant potential showed a similar trend in interannual variations, suggesting that cold SST conditions observed in the 2007 spawning season could increase the consumption of antioxidants in early stages. Potential connections between AA concentration in the food web on anchoveta reproduction and egg hatching and embryo malformations are discussed.
    Materialart: Article , PeerReviewed
    Format: text
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 4
    Publikationsdatum: 2011-01-04
    Beschreibung: Immune cells take residence in metabolic tissues, providing a framework for direct regulation of nutrient metabolism. Despite conservation of this anatomic relationship through evolution, the signals and mechanisms by which the immune system regulates nutrient homeostasis and insulin action remain poorly understood. Here, we demonstrate that the IL-4/STAT6 immune axis, a key pathway in helminth immunity and allergies, controls peripheral nutrient metabolism and insulin sensitivity. Disruption of signal transducer and activator of transcription 6 (STAT6) decreases insulin action and enhances a peroxisome proliferator-activated receptor α (PPARα) driven program of oxidative metabolism. Conversely, activation of STAT6 by IL-4 improves insulin action by inhibiting the PPARα-regulated program of nutrient catabolism and attenuating adipose tissue inflammation. These findings have thus identified an unexpected molecular link between the immune system and macronutrient metabolism, suggesting perhaps the coevolution of these pathways occurred to ensure access to glucose during times of helminth infection.
    Print ISSN: 0027-8424
    Digitale ISSN: 1091-6490
    Thema: Biologie , Medizin , Allgemeine Naturwissenschaft
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...