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  • Other Sources  (30)
  • 2010-2014  (16)
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  • 1
    Publication Date: 2021-03-29
    Description: Die paläolithischen Inventare Süddeutschlands können wie folgt stratigraphisch gegliedert werden: 1. Frühpaläolithische Begehung im Ausgang einer längeren altpleistozänen Warmphase, wahrscheinlich unmittelbar vor dem „ältesten Löß" Süddeutschlands. Geröllgeräte von Mauer. 2. Begehung ausgangs der nächstjüngeren Warmzeit. Altertümliche Abschlaginventare des Altpaläolithikums. 3. Begehung in einer interstadialen Schwankung der anschließenden Kaltphase. Etwas entwickeltere Abschlaggeräte mit schwacher Faustkeilkomponente. 4.Begehung kurz vor oder im Beginn des letzten Interglazials. Spuren des Faustkeilschaberkreises. 5. Begehung im oberen Abschnitt der gleichen Wärmeperiode. Mousteroide Artefakte mit beginnender Blattspitzentendenz. 6. Altpaläolithische Stufe (Fortführung der 5. Begehung) im Übergang zur letzten Kaltzeit. Einfache Inventare des Oberen Altpaläolithikums, Altpaläolithikum mit Blattspitzen, altpaläolithische Gruppen mit stark gesteigerten Kratzeranteilen. Haldenstein-klinge als Obergrenze des Altpaläolithikums. 1. Jungpaläolithische Begehung im Bereich und möglicherweise vor der Hauptschwankung der letzten Kaltzeit (Hauptschwankung, weil eine ältere — außerhalb Süddeutschlands belegbare — kleinere Oszillation und zumindest zwei jüngere Schwankungen innerhalb der letzten Kaltphase wahrscheinlich sind). Unteres, dem westlichen Aurignacien I sowie ähnlichen östlichen Einheiten anschließbares Jungpaläolithikum. Fortgesetzte Begehung im Oberen Würm durch verschiedene, überwiegend östlich orientierte jungpaläolithische Gruppen bis ins Spät- und Postglazial und Übergang zum Mesolithikum, ohne ausgeprägte Diskordanz zwischen Jungpaläolithikum und Mesolithikum. Die Einordnung in das allgemeine stratigraphische System des süddeutschen Pleistozäns kann nur mit Vorbehalt und unter Beiziehung einiger terminologischer Hilfsbegriffe durchgeführt werden: Die 1. Begehung steht am Ende einer zeitlich ausgedehnten Warmzeit, die nach unten durch Donau und gegen oben durch die „N"-Kaltzeit abgegrenzt erscheint und die Deckenschotter als „G"- und „M"- Kälteoszillationen unbekannter Größenordnung in sich einschließt. Die 2. Begehung wird dem Ausgang des Steinheimer Interglazials zugeteilt, während die 3., 4. und 5. mit der folgenden „R"- Kaltzeit und dem anschließenden „Stuttgarter Interglazial" in Verbindung stehen. Das restliche Altpaläolithikum sowie das gesamte Jungpaläolithikum gehören dem Würm, das Mesolithikum dem frühen Holozän an.
    Description: research
    Keywords: 551.7 ; VAR 000 ; Glazialgeologie ; paläolithikum ; stratigraphie ; pleistozän ; süddeutschland ; donau ; kultur ; kälteoszillation
    Language: German
    Type: article , publishedVersion
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  • 2
    Publication Date: 2021-03-29
    Description: Ausgehend von der gegenwärtigen Diskussion um die Gliederung des mitteleuropäischen Jungpleistozäns werden die Aussagemöglichkeiten der paläolithischen Hauptfundstellen des Gebietes untersucht. Als stratigraphisches Ergebnis läßt sich einerseits das Voll-Interglazial (Eem mit Antiquusfauna), andererseits das Voll-Glazial mit einer relativ kurzen Schwankung (Bildungszeit der beiden obersten Jüngeren Löße) hinreichend fixieren. Das klassische Würm (im Sinne von A. Penk & E. Brückner 1909) kann offenbar nur mit dem obersten Jüngeren Löß nach der voll-glazialen Schwankung in etwa parallelisiert werden. Zwischen Voll-Interglazial und Voll-Glazial liegt eine sehr wahrscheinlich langdauernde schwankungsreiche Übergangsperiode, für die die Bezeichnung Jungpleistozänes Anaglazial vorgeschlagen wird. Sie umfaßt einerseits das Spät-Interglazial (mit Mammutfauna), andererseits das Früh-Glazial (mit regional beschränkter Lößbildung). Innerhalb des Anaglazials sind mehrere kleinere und größere Klimaschwankungen zu erwarten. Archäologisch sind Voll-Interglazial und Anaglazial in Mitteleuropa mit keineswegs einheitlichen spät-altpaläolithischen moustéroiden Inventaren verbunden. Kulturträger dürften vorwiegend neandertaloide (anthropologisch ebenfalls kaum einheitliche) Menschenformen gewesen sein. Das Auftreten des echten Jungpaläolithikums („Aurignacien typique") erfolgt erst mit Beginn des Voll-Glazials kurz vor der voll-glazialen Schwankung.
    Description: research
    Keywords: 551.7 ; VAR 000 ; Glazialgeologie ; mitteleuropa ; paläolithikum ; stratigraphie ; vogelherd ; jungpleistozän ; frankreich ; archäologie ; lebenstedt ; weimar ; pollau ; C-14 ; terminologie ; ehringsdorf ; willendorf ; achenheim ; stetten ; unter-wisternitz ; voll-glazial ; voll-interglazial ; anaglazial ; mammutfauna ; neandertaloid
    Language: German
    Type: article , publishedVersion
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  • 3
    Publication Date: 2000
    Keywords: Subduction zone ; Plate tectonics ; Seismology ; ConvolutionR ; Receiver functions ; FLORENZO
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  • 4
    Publication Date: 2000
    Description: Auswirkung des N-Eintrages auf das Waldwachstum/Waldzusammensetzung; durch hypertrophes Wachstum auf eutrophierten Standorten schnelle Ausschöpfung der Wasserressourcen in trockenen Sommern und damit Wassermangel und Befallsdisposition gegenüber Schadinsekten KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
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  • 5
    Publication Date: 2011-08-24
    Description: The sampling capability of Tenax-TA tubes, used in the National Aeronautics and Space Administration's solid sorbent air sampler to trap and concentrate contaminants from air aboard spacecraft, was improved by incorporating two sorbents within the tubes. Existing tubes containing only Tenax-TA allowed highly volatile compounds to "break through" during collection of a 1.5 L air sample. First the carbon molecular sieve-type sorbents Carboxen 569 and Carbosieve S-III were tested for their ability to quantitatively trap the highly volatile compounds. Breakthrough volumes were determined with the direct method, whereby low ppm levels of methanol or Freon 12 in nitrogen were flowed through the sorbent tubes at 30 mL/min, and breakthrough was detected by gas chromatography. Breakthrough volumes for methanol were about 9 L/g on Carboxen 569 and 11 L/g on Carbosieve S-III; breakthrough volumes for Freon 12 were about 7 L/g on Carboxen 569 and 〉 26 L/g on Carbosieve S-III. Next, dual-bed tubes containing either Tenax-TA/Carbosieve S-III, Tenax-TA/Carboxen 569, or Carbotrap/Carboxen 569 to a 10-component gas mixture were exposed, in dry and in humidified air (50% relative humidity), and percentage recoveries of each compound were determined. The Tenax-TA/Carboxen 569 combination gave the best overall recoveries (75-114% for the 10 compounds). Acetaldehyde had the lowest recovery (75%) of the 10 compounds, but this value was still an improvement over either the other two sorbent combinations or the original single-sorbent tubes.
    Keywords: Environment Pollution
    Type: AIHAJ : a journal for the science of occupational and environmental health and safety (ISSN 1529-8663); Volume 61; 1; 69-75
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  • 6
    Publication Date: 2011-08-24
    Description: Since the launch of Landsat-1 28 years ago, remotely sensed data have been used to map features on the earth's surface. An increasing number of health studies have used remotely sensed data for monitoring, surveillance, or risk mapping, particularly of vector-borne diseases. Nearly all studies used data from Landsat, the French Systeme Pour l'Observation de la Terre, and the National Oceanic and Atmospheric Administration's Advanced Very High Resolution Radiometer. New sensor systems are in orbit, or soon to be launched, whose data may prove useful for characterizing and monitoring the spatial and temporal patterns of infectious diseases. Increased computing power and spatial modeling capabilities of geographic information systems could extend the use of remote sensing beyond the research community into operational disease surveillance and control. This article illustrates how remotely sensed data have been used in health applications and assesses earth-observing satellites that could detect and map environmental variables related to the distribution of vector-borne and other diseases.
    Keywords: Earth Resources and Remote Sensing
    Type: Emerging infectious diseases (ISSN 1080-6040); Volume 6; 3; 217-27
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  • 7
    Publication Date: 2011-08-24
    Description: The human health community has been slow to adopt remote sensing technology for research, surveillance, or control activities. This chapter presents a brief history of the National Aeronautics and Space Administration's experiences in the use of remotely sensed data for health applications, and explores some of the obstacles, both real and perceived, that have slowed the transfer of this technology to the health community. These obstacles include the lack of awareness, which must be overcome through outreach and proper training in remote sensing, and inadequate spatial, spectral and temporal data resolutions, which are being addressed as new sensor systems are launched and currently overlooked (and underutilized) sensors are newly discovered by the health community. A basic training outline is presented, along with general considerations for selecting training candidates. The chapter concludes with a brief discussion of some current and future sensors that show promise for health applications.
    Keywords: Earth Resources and Remote Sensing
    Type: Advances in parasitology (ISSN 0065-308X); Volume 47; 331-44
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  • 8
    Publication Date: 2011-08-24
    Description: BACKGROUND: It is well known that space travel cause post-flight orthostatic hypotension and it was assumed that autonomic cardiovascular control deteriorates in space. Lower body negative pressure (LBNP) was used to assess autonomic function of the cardiovascular system. METHODS: LBNP tests were performed on six crew-members before and on the first days post-flight in a series of three space missions. Additionally, two of the subjects performed LBNP tests in-flight. LBNP mimics fluid distribution of upright posture in a gravity independent way. It causes an artificial sequestration of blood, reduces preload, and filtrates plasma into the lower part of the body. Fluid distribution was assessed by bioelectrical impedance and anthropometric measurements. RESULTS: Heart rate, blood pressure, and total peripheral resistance increased significantly during LBNP experiments in-flight. The decrease in stroke volume, the increased pooling of blood, and the increased filtration of plasma into the lower limbs during LBNP indicated that a plasma volume reduction and a deficit of the interstitial volume of lower limbs rather than a change in cardiovascular control was responsible for the in-flight response. Post-flight LBNP showed no signs of cardiovascular deterioration. The still more pronounced haemodynamic changes during LBNP reflected the expected behaviour of cardiovascular control faced with less intravascular volume. In-flight, the status of an intra-and extravascular fluid deficit increases sympathetic activity, the release of vasoactive substances and consequently blood pressure. Post-flight, blood pressure decreases significantly below pre-flight values after restoration of volume deficits. CONCLUSION: We conclude that the cardiovascular changes in-flight are a consequence of a fluid deficit rather than a consequence of changes in autonomic signal processing.
    Keywords: Aerospace Medicine
    Type: European journal of clinical investigation (ISSN 0014-2972); Volume 30; 12; 1055-65
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  • 9
    Publication Date: 2011-08-24
    Description: In the upright position, gravity fills the low-pressure systems of human circulation with blood and interstitial fluid in the sections below the diaphragm. Without gravity one pressure component in the vessels disappears and the relationship between hydrostatic pressure and oncotic pressure, which regulates fluid passage across the capillary endothelium in the terminal vascular bed, shifts constantly. The visible consequences of this are a puffy face and "bird" legs. The plasma volume shrinks in space and the range of cardiovascular control is reduced. When they stand up for the first time after landing, 30-50% of astronauts suffer from orthostatic intolerance. It remains unclear whether microgravity impairs cardiovascular reflexes, or whether it is the altered volume status that causes the cardiovascular instability following space flight. Lower body negative pressure was used in several space missions to stimulate the cardiovascular reflexes before, during and after a space flight. The results show that cardiovascular reflexes are maintained in microgravity. However, the astronauts' volume status changed in space, towards a volume-retracted state, as measurements of fluid-regulating hormones have shown. It can be hypothesized that the control of circulation and body fluid homeostasis in humans is adapted to their upright posture in the Earth's gravitational field. Autonomic control regulates fluid distribution to maintain the blood pressure in that posture, which most of us have to cope with for two-thirds of the day. A determined amount of interstitial volume is necessary to maintain the dynamic range of cardiovascular control in the upright posture; otherwise orthostatic intolerance may occur more often.
    Keywords: Aerospace Medicine
    Type: Pflugers Archiv : European journal of physiology (ISSN 0031-6768); Volume 441; 2-3 Suppl; R52-61
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  • 10
    Publication Date: 2019-07-17
    Description: We determine the radial component of the supergranular flow velocity by examining the center-to-limb variation of the Doppler velocity signal. We acquire individual Doppler images obtained with the MDI instrument on the SOHO spacecraft and process them to remove the p-mode oscillation signal, the axisymmetric flows, the convective blueshift signal, and instrumental artifacts. The remaining Doppler signal contains only cellular flow structures. The Doppler signal from the horizontal flows in these cells varies like sin p, where p is the heliocentric angle from disk center. The Doppler signal from radial flows varies like cos p. We fit the center-to-limb variation of the mean squared velocity signal to a straight line in sin(exp 2) rho over the central portion of the disk. The intercept of this line at disk center gives the amplitude of the radial component of the flow. The slope of the line gives the amplitude of the horizontal component. We find that the radial flows for typical supergranules have speeds about 10% that of their associated horizontal flows or about 30 m/s. The ratio of the radial to horizontal flow speed increases from 9% to about 18% as the size of the cells decreases from 〉 60 Mm to approximately 5 Mm. We use data simulations to check these results and find a ratio that increases from 5% to only about 12% over the same range of cell sizes. These smaller ratios are attributed to an underestimation of the horizontal flow speeds due to the fact that, the transverse component of the horizontal flow is not detected by the Doppler measurements.
    Keywords: Astrophysics
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