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  • 1
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    Stazione Zoologica di Napoli
    In:  Pubblicazioni della Stazione Zoologica di Napoli, 34 . pp. 86-97.
    Publication Date: 2020-09-07
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  • 2
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 70 pp
    Publication Date: 2017-06-21
    Type: Thesis , NonPeerReviewed
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  • 3
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    Elsevier
    In:  Deep Sea Research and Oceanographic Abstracts, 11 (1). pp. 113-126.
    Publication Date: 2017-05-12
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  • 4
    Publication Date: 2017-05-12
    Description: The solubility of water in a basaltic and in an andesitic melt has been determined in the pressure range from approximately 1,000 to 6,000 bars at 1,100° C. The solubility in basaltic melt is 3.1 weight percent at 1,000 bars and 9.4 weight percent at 6,000 bars; in the andesitic melt it is 4.5 weight percent at 1,000 bars and 10.1 weight percent at 5,300 bars. The temperatures of appearance of the primary, secondary, and tertiary phases in the basalt have been determined at 1,000 bars water pressure and at the fo2's of the magnetite+hematite (MH), magnetite+fayalite+quartz (MFQ) and magnetite+wüstite (MW) buffers. Results are as follows: Buffer Pyroxene Plagioclase Ore mineral MH 1,095°C 1,065°C 1,230°C MFQ 1,040° 1,015° 1,010° MW 1,020° 1,010° 995° A comparison of the solubility of water at 1,100°C and up to approximately 6,000 bars pressure in several silicate melts, ranging in composition from granitic to gabbroic, indicates that the spread of solubility is narrower than has been supposed. The marked effect of fo2's on the crystallization sequence in the Columbia River basalt confirms the importance of this factor in determining liquid lines of descent. In experiments with low fo2's (MW buffer) and 1,000 bars water pressure, the basalt was completely liquid at the relatively low temperature of 1,020° C.
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  • 5
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    Taylor & Francis
    In:  Beitrage zur Neotropischen Fauna, 4 (1). pp. 1-44.
    Publication Date: 2017-09-07
    Description: Description of 64 species of fresh‐water Fishes of the suborder Characoidei (Cypriniformes), collected by Dr. K. H. Lüling during his 1959/60 Expedition in lower Ucayali and Iquitos regions. New forms for science (about 10 per cent of the collected species) are: a new genus, Oxybrycon, which seems to be close to Leptobrycon and Macropsobrycon; a Hemigrammus‐species and 2 Hyphessobrycon‐species; a Cheirodon (the genus was not signaled from Peruvian Amazon); and a Serrasalmus. Besides, 10 species seem to be new for the concerned territory, whereas 2 other forms have been described in former papers (see References). Some identification‐Keys are given, concerning Amazonian Triportheus and Schizodon, as well as concerning one Curimatus‐group of species. Finally a list of the characoid Fishes, known to occur in the Iquitos surroundings and in the lower Ucayali, is given.
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  • 6
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 95 pp
    Publication Date: 2017-09-14
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  • 7
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 70 pp
    Publication Date: 2017-11-24
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  • 8
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    Dt. Wetterdienst, Zentralamt
    In:  Leitfäden für die Ausbildung im Deutschen Wetterdienst, 2 . Dt. Wetterdienst, Zentralamt, Offenbach am Main, Germany, 49 pp.
    Publication Date: 2017-11-27
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  • 9
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    Nationaal Natuurhistorisch Museum, Leiden
    In:  Zoologische Mededelingen, 39 . pp. 263-278.
    Publication Date: 2020-04-21
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  • 10
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    In:  (Professorial dissertation), Christian-Albrechts-Universität Kiel, Kiel, Germany, 129 pp
    Publication Date: 2017-12-20
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  • 11
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 79 pp
    Publication Date: 2017-09-13
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  • 12
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 93 pp
    Publication Date: 2017-12-20
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  • 13
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    Geological Society of America
    In:  Geological Society of America Bulletin, 75 (5). pp. 403-424.
    Publication Date: 2020-07-30
    Description: Facies trends were developed for San Pedro Bay, California, based upon 44 well-distributed stations. The area of investigation extends from the shore out to depths of 176 m, a distance of about 20 km, and spans a distance along the shelf of about 25 km. Sediments of the bay are mostly detrital sands along the shore line, silty sands on the shelf, and silts and silty sands on the slope off the edge of the shelf; residual and relict sediments (sands and silty sands) occupy a central region, contributing to more complex sedimentary patterns. Values for calcium carbonate and nitrogen are highest along the outer edge of the shelf and in the upper bathyal zone. Polychaetes dominate the megafauna; foraminifera dominate the microfauna. Forammiferal abundance and species diversity are greatest in outer areas of the shelf and in the upper bathyal zone; live/dead ratios are highest in central and inner shelf areas; live foraminifera are about three times as abundant in the upper bathyal zone as on the shelf. Calcareous perforate foraminifera dominate both dead and live assemblages throughout the area. Planktonic/benthic ratios are highest in the upper bathyal region; values for planktonic specimens per gram increase 20–100 times from the shelf into the bathyal zone. In the upper 10 m of the water column, phosphate and plankton cells per liter attain highest values in the central and inner shelf areas; however, in the lower 10 m of the water column, there is a general increase in phosphate values away from shore. Benthic foraminiferal populations may be grouped into inner shelf Buliminella elegantissima (d'Orbigny), central and outer shelf Nonionella-Trochammina, and upper bathyal Bolivina acuminata Natland groups. Hopkinsina pacifica Cushman is diagnostic of the general harbor region; Bulimina marginata denudata Cushman and Parker occurs in both the harbor and in the outer shelf and upper bathyal zones. The edge of the shelf, a structural trend, is defined by the boundary zone between the Nonionella and Bolivina acuminata Natland faunal groups. Similar structural trends may be indicated in the California marine Miocene by boundary zones between analogous faunal groups.
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  • 14
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    Cambridge University Press
    In:  Journal of Fluid Mechanics, 18 (03). pp. 409-437.
    Publication Date: 2020-07-24
    Description: In this paper we examine the steady, two-dimensional convective motion which occurs in a horizontal circular cylinder whose wall is non-uniformly heated. One observes several qualitatively different physical phenomena depending on the wall temperature distribution and the value of the Rayleigh number. The low-Rayleigh-number behaviour for the single convective cell heated from below is related to the classical Rayleigh stability problem. The critical Rayleigh number for the single circular cell is approximately five times the value for Rayleigh's multi-celluar configuration. The flow which exhibits a nearly parabolic velocity profile near the critical Rayleigh number, gradually changes to a rigidly-rotating-core behaviour as the Rayleigh number increases. The speed of core rotation is a function of the Prandtl number, whereas the boundary-layer thickness is primarily a function of the Rayleigh number. When the heating is from side to side, the solution shows that as the Rayleigh number increases the core motion is progressively arrested leaving a narrow circulating band of fluid adjacent to the wall. An oblique heating produces a hybrid phenomenon, a low-Rayleigh-number behaviour which is characteristic of the sideways heating case and a high-Rayleigh-number interior motion characteristic of the bottom heating case. To determine the core motion in the high-Rayleigh-number limit, Batchelor's work concerning the uniqueness of incompressible, exactly steady, closed streamline flows with small viscosity is extended to include flows with small thermal conductivity.
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  • 15
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 56 pp
    Publication Date: 2018-08-15
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  • 16
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 85 pp
    Publication Date: 2017-11-29
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  • 17
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 164 pp
    Publication Date: 2017-11-30
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  • 18
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    Royal Society of London
    In:  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 279 (1379). pp. 446-473.
    Publication Date: 2020-06-08
    Description: Simple solutions are found for barotropic planetary oscillations of a fluid in a $\beta$-plane, both in the unbounded plane and in enclosed basins of various shapes. These are compared with analogous motions of fluid on the surface of a sphere. The motions in a $\beta$-plane are considered in part I. It is shown that waves can exist which may be oriented in any horizontal direction; they drift westwards with a velocity $\beta$/$\kappa^2$, where $\kappa$ = 2$\pi$/wavelength is the absolute wave number. The group velocity of these waves makes an angle 2$\alpha$ with the eastward direction, where $\alpha$ is the angle made by the vector wave number. The reflexion of such waves from a fixed boundary is studied; both the wavelength and orientation of the reflected wave differs from that of the incident wave in general. Westward-drifting motions are typical of motions on an unbounded $\beta$-plane. On the other hand, motions in an enclosed basin can be described as a carrier wave modulated by a real amplitude function f(x, y). The equation for f is equivalent to the equation for a vibrating membrane clamped at the boundaries; normal mode solutions can be obtained explicitly for a variety of shapes of basin, including the rectangle, circle and equilateral triangle. Motions on a sphere are considered in part II. On an unbounded sphere the general solutions are spherical harmonics S$_n$($\theta$', $\phi$') where ($\theta$', $\phi$') denote spherical co-ordinates with respect to some pole P', not necessarily on the axis of rotation. The motions are propagated by a westward drift of the pole P' round a circle of latitude, with angular velocity 2$\Omega$/n(n+1). Solutions in enclosed basins have been found not only when the boundaries of the basin are circles of latitude, but also when the boundaries are meridians of longitude. The validity of the $\beta$-plane approximation is investigated, first by determining the asymptotic forms of the surface harmonics when the wave number n is high; secondly by comparing the periods of the lower modes in an enclosed basin on a sphere with the corresponding periods for the $\beta$-plane. At high wave numbers the solutions in terms of spherical harmonics do generally reduce to motions satisfying the $\beta$-plane equations: but exceptions occur in the neighbourhood of certain caustic lines, where the variation of $\beta$ must be taken into account. Thus it is possible for a wave motion to be trapped in the neighbourhood of a great-circle, the amplitude falling off rapidly to either side. The plane of this great-circle rotates slowly round the axis of rotation of the sphere. On the other hand, in an enclosed basin centred on the equator some of the lower modes of oscillation agree very well with those derived from the $\beta$-plane approximation. Even when the radius of the basin is as great as one quadrant, the periods of the four lowest symmetric modes agree within 10%.
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  • 19
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    Cambridge University Press
    In:  Geological Magazine, 101 (6). pp. 541-547.
    Publication Date: 2020-07-31
    Description: Textural differences in the occurrence of microcline define augen gneisses, subhedral porphyroblastic gneisses and euhedral porphyroblastic gneisses within the Bartica Assemblage, British Guiana. The introduction of microcline is metasomatic and the nature of the porphyroblasts appears to be a reflection of tectonic control during their development.
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  • 20
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    Rosenstiel School of Marine and Atmospheric Science
    In:  Bulletin of Marine Science, 14 (1). pp. 140-148.
    Publication Date: 2020-07-16
    Description: A new species of enoploteuthid squid, Enoploteuthis anapsis, is described from the tropical Atlantic. Its relationship to Enoploteuthus leptura (Leach, 1817), heretofore the only known Atlantic species of the genus, is discussed.
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  • 21
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    Elsevier
    In:  Deep Sea Research and Oceanographic Abstracts, 11 (6). pp. 881-890.
    Publication Date: 2016-09-22
    Description: Observations of temperature and electrical conductivity by a recording in situ salinometer are discussed in respect oo the physical processes connected with the renewal of North Atlantic deep water. The measured fine structure of the layering suggests that the downward movement of cooled surface water is combined with horizontal mixing down to more than 1000 m depth. This is confirmed by the existence of water elements which have slightly different temperature and salinity. Curves of temperature, conductivity, and salinity and T-S diagrams are shown.
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  • 22
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    Marine Technology Society
    In:  Transactions of the International Buoy Technology Symposium, 1964 . pp. 483-488.
    Publication Date: 2016-05-24
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  • 23
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    Institute of Marine Science, University of Miami
    In:  Bulletin of Marine Science of the Gulf and Caribbean, 14 (4). pp. 554-560.
    Publication Date: 2020-07-16
    Description: Octopus defilippi Verany is recorded for the first time from the westem Atlantic. Formerly considered to belong to the fauna of the eastem Atlantic and Mediterranean, its western Atlantic range includes southern Florida and the Gulf of Mexico. The western Atlantic specimens are described in detail.
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  • 24
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    Rosenstiel School of Marine and Atmospheric Science
    In:  Bulletin of Marine Science, 14 (3). pp. 444-452.
    Publication Date: 2020-07-16
    Description: The male and larvae of Lampadioteuthis megaleia Berry are described for the first time. The presence of a single penis and a hectocotylus, and the discovery of a rostrum on the pen prompt a re-examination of the characters that have placed this animal as the sole representative of the subfamily Lampadioteuthinae.
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  • 25
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    Institute of Marine Science, University of Miami
    In:  Bulletin of Marine Science of the Gulf and Caribbean, 14 (3). pp. 511-516.
    Publication Date: 2020-07-16
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  • 26
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    American Association for the Advancement of Science (AAAS)
    In:  Science, 146 (3640). pp. 45-48.
    Publication Date: 2016-07-01
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  • 27
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    Elsevier
    In:  Progress in Oceanography, 2 . pp. 1-52.
    Publication Date: 2016-10-07
    Description: Reviews the major deep-sea expeditions from that of HMS Challenger in 1873 to 1960. Emphasis is on the increasing sophistication of vessels and equipment used, the growth of international cooperation and the proliferation of branches of oceanographic studies. Arctic work by Nansen, Sverdrup, recent Soviet scientists, the Scripps Institution and the Norpac program are mentioned (maps). Vessels used during the period and their activities are tabulated. Two maps show cruises of the Atlantic Polar Front Program Jan-Dec 1958 in the Greenland and Barents Seas
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  • 28
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    American Medical Assn.
    In:  Archives of Pathology, 78 . pp. 69-72.
    Publication Date: 2019-02-05
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  • 29
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    Univ. of Chicago Press
    In:  Physiological zoology, 37 (1). pp. 33-44.
    Publication Date: 2019-02-20
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  • 30
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    In:  (Diploma thesis), Christian-Albrechts-Universität, Kiel, Kiel, Germany, 90 pp
    Publication Date: 2019-03-12
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  • 31
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    Gulf Publishing Company
    In:  World Oil, August . p. 78.
    Publication Date: 2019-07-05
    Description: Hopes rise around East and West Frisian Islands
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  • 32
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    Elsevier
    In:  Advances in Marine Biology, 2 . pp. 171-260.
    Publication Date: 2019-09-13
    Description: This chapter throws the attention on the methods of sampling the benthos, which has been directed mainly to the operation of the gear at sea and to such other factors as may influence sampling methods. This chapter briefly traces the history of benthos investigations, and then considers how far the instruments now available provide with the quantitative samples. It also shows how advances in other fields, such as radio-position finding, sonar and electronic equipment have increased the precision of our sampling methods. Moreover, sorting and sieving on board ship can be considered and brief mention made of methods of soil analysis and biomass determination. This chapter discusses the two possible approaches for the development of satisfactory quantitative collecting methods. First the improvement of the grab-type of instrument, with particular reference to increasing penetration and the perfection of release gear for the open sea, and second; the development of a wide-core sampler, like the Knudsen sampler, which works satisfactorily in the open sea. Moreover, statistics need to be even more fully applied, where collecting methods justify them, to such problems as the degree and scale of dispersion of individuals.
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  • 33
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität zu Kiel, Kiel, Germany, 58 pp
    Publication Date: 2021-02-01
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  • 34
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    Elsevier
    In:  The Journal of Laboratory and Clinical Medicine , 64 (1). pp. 29-41.
    Publication Date: 2022-01-06
    Description: Fecal excretion of calcium of endogenous origin has been measured in 52 studies in 33 adult human subjects, under full metabolic balance conditions. Endogenous fecal calcium averaged .130 ± .047 Gm. per day, was positively correlated with both fecal calcium and dietary calcium and was inversely correlated with fractional calcium absorption. The regression line relating endogenous fecal calcium with fractional absorption allowed estimates for total intestinal calcium secretion at both zero and 100 per cent absorption; from these estimates it was calculated that approximately 15 per cent of the total intestinal calcium secretion was nonabsorbable even under conditions when dietary calcium was completely absorbed (presumably because it enters the gut caudad of the absorption sites). Total intestinal calcium secretion, calculated so as to allow for this nonabsorbable fraction, averaged .194 ± .073 Gm. per day, and could not be correlated with age, sex, dietary calcium intake, caloric intake, urine calcium, or plasma calcium. A weak correlation with body size (weight, surface area) was observed. The conditions studied were principally disorders of bone, calcium, and parathyroid metabolism, and in most of them total intestinal calcium secretion appeared identical. The sole exception was seen in two studies on a patient with acromegaly, in which total intestinal calcium secretion was over twice the mean value for the remainder of the group.
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  • 35
    Publication Date: 2022-02-10
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  • 36
    Publication Date: 2022-04-06
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  • 37
    Publication Date: 2022-04-06
    Description: Es wird ein neuer Bodenwasserschöpfer von 4,2 l Inhalt beschrieben, der zusammen mit einer Probenahme des unmittelbar am Boden befindlichen Wassers eine sichere Temperaturmessung mit Kippthermometern ermöglicht. A new watersampler containing 4,2 1 is described. Together with water sampling of the bottom water a save measurement of the temperature with reversing thermometers is possible.
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  • 38
    Publication Date: 2022-04-06
    Description: Auf Grund langfristiger Registrierungen lassen sich die Strömungsverhältnisse an der Golfküste von Neapel als küstenparallele Grundströmung auffassen, der in periodischer oder nichtperiodischer Form Störungen überlagert sind. Es wird versucht, die EKMANSCHE Theorie des nichtstationären Triftstromes - unter Einbeziehung der horizontalen Reibung und einer Grundströmung - auf die küstenparallele Strömung zu erweitern. Im Gegensatz zu EKMAN, der bei einem konstant wirkenden Wind einen periodischen Massentransport erhält, strebt hier der Massentransport aperiodisch einem durch Reibung und Grundströmung bedingten Grenzwert zu. Außerdem erfolgt der Massentransport nicht senkrecht cum sole zur Windrichtung, sondern es ergeben sich in Abhängigkeit von Reibung und Grundstrom Winkel, die kleiner als 90° sind.
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  • 39
    Publication Date: 2022-04-06
    Description: Es wird ein neues Gerät beschrieben, mit dem im Gegenstromverfahren Wasser erzeugt wird, das mit wasserdampfgesättigter Luft bei einer wählbaren Temperatur im Gleichgewicht steht. Dieses Wasser dient als Absolutstandard bei der Sauerstoffbestimmung nach der Winklermethode. Die neu ermittelten Sättigungswerte von KLOTS und BENSON werden in einem Temperaturbereich zwischen 15° und 30° bestätigt. Die Standardabweichung des Sauerstoffgehalts von Simultanproben beträgt 0,005 ml 02/l und liegt damit innerhalb der Fehlergrenzen der angewandten chemischen Titrationsmethode. A new apparatus is described for equilibrating water with water vapor saturated air in a conter current system at defined temperatures. This water is taken as an absolute standard for the oxygen determination by the Winkler method. The new saturation values by KLOTS and BENSON could be confirmcd between 15 and 30° C. The standard dcviation of the oxygen content of replicate samples is 0.005 ml O2/l and is within the limits of error of the chemical titration method.
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  • 40
    Publication Date: 2022-04-06
    Description: Beschrieben wird ein Bodenberührungsschalter, der an Unterwassermeßgeräten befestigt werden kann und speziell für Geräte mit Frequenzmodulation und Einleiterkabel entwickelt wurde, z. B. die Bathysonde. A bottoming switch is described, which can be fastened to underwater instruments working with frequency modulation and single conductor cable, e.g. the so called Bathysonde.
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  • 41
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    Institut für Meereskunde
    Publication Date: 2022-04-06
    Description: Es wird eine Methode zur einfachen, schnellen und genauen Bestimmung von Nitrat in Meer- und Trinkwasser beschrieben. Die nitrathaltige Wasserprobe wird unter Zusatz von Ammoniumchlorid und Ammoniak in einem Jones-Reduktor quantitativ zu Nitrit reduziert und das Nitrit photometrisch bestimmt. 0,05 µg-atom Nitrat-Stickstoff im Liter können noch sicher nachgewiesen werden. Die Standardabweichung der Bestimmung liegt bei einem Gehalt von 1,4 µg-atom N03- - N/L bei ∓ 0,016 µg-atom = ∓ 1,2%. Mit 6 Reduktoren können in der Stunde etwa 20 Wasserproben untersucht werden. A simple, rapid and accurate method for the determination of nitrate in sea and drinking water is described. Ammoniumchloride and ammonia solution are added to the water sample containing nitrate. The sample is quantitatively reduced to nitrite in a Jones reductor with cadmium amalgame. The nitrite is determinated photometrically. 0,05 µg-atom nitrate-nitrogen per liter can be detected surely. The standard cleviation at the 1,4 µg-atom level is ∓ 0,016 µg-atom N03--N / L = ∓ 1,2%. With 6 reductors about 20 samples can be analyzed within 1 hour.
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  • 42
    Publication Date: 2022-04-06
    Description: Im Ursprungsgebiet der Südäquatorialströmung findet man erhöhte Werte von Seston und Plankton. Die auf einer Fahrt mit H.A.M.S. DIAMANTINA im Juli und August 1961 gefundenen Daten sind für die Oberschicht in den Abb. 2-7 und für ausgewählte Vertikalserien in Abb. 9-13 zusammengestellt. Eine Deutung durch die hydrographischen Verhältnisse wird versucht. Tab. 1 und 2 enthalten Schicht-Mittelwerte für das untersuchte Gebiet. Some results are given from H.A.M.S. DIAMANTINA cruise 3/61 in July-August 1961. The data for the surface layer are presented in fig. 2-7, for selected casts in fig. 9-13, the values for definite levels are summarized in tables 1 and 2. Seston and microbiomass content is increased under the influence of the South Equatorial Current, and in shallow waters.
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  • 43
    Publication Date: 2022-04-06
    Description: Es werden Versuche mit zwei verschiedenartig aufgebauten Konzentrationszellen beschrieben, deren EMK auf Grund der Verwendung von Silber/Silberchlorid-Elektroden von der Chloridkonzentration im Elektrolyten abhängt. Die Arbeitsweise von Zellen mit Polyäthylen- und mit Ionenaustauschmembranen wird durch Meßreihen mit reinen NaCI-Lösungen und mit Seewasser verglichen. Es wird eine potentiometrische in-situ Anordnung beschrieben und ein Beispiel für eine schnelle Oberflächenaufnahme der Salzgehalts- und Temperaturverteilung gegeben. Experiments are discussed with two concentration cells of different construction. The emf of these cells depends on the concentration of chloride ions in solution because of the silver/silverchloride-electrodes used. The behaviour of cells with polyethylen membrans and with ion exchange membrans is compared by measurements with pure NaCl-solutions and with sea water. A potentiometric in-situ device is described and an example is given for a fast way of recording the surface distribution of salinity and temperature.
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  • 44
    facet.materialart.
    Unknown
    Institut für Meereskunde
    Publication Date: 2022-04-06
    Description: Es wird gezeigt, daß man mit bekannten Routinemethoden der mathematischen Physik die Kenntnisse über Kinematik und Dynamik interner Wellen wesentlich gegenüber den aus der Theorie der Grenzflächenwellen bekannten Ergebnissen erweitern kann, wenn man mit einer exponentiellen Dichteverteilung rechnet. In den Abschnitten 1-3 werden bekannte Resultate zusammengestellt, Abschnitt 4 enthält eine Formel für die Wellenlänge interner Wellen (GI. 31). Die Energie interner Wellen (Abschnitt 5) erweist sich als erheblich größer als die der Grenzflächenwellen. In Abschnitt 7 werden Rechnungen über die Entstehung interner Wellen durch die Gezeitenkräfte, den Luftdruck und den Wind angegeben, und in Abschnitt 8 wird gezeigt, daß lineare inkompressible interne Wellen in der Tiefsee praktisch keine Dämpfung erfahren.
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  • 45
    Publication Date: 2022-04-07
    Description: Aus einem Material von je 1600 Seston- und Eiweißbestimmungen, die im Rahmen der deutschen Beteiligung am Polarfront-Programm des IGY gewonnen wurden, werden hier mittlere Tiefenverteilungswerte für diese beiden Komponenten der partikulären Substanz errechnet. Dabei ergeben sich Mittelwerte des Sestons für die Oberfläche zwischen 580 und 1810 µg/1 und für das Eiweiß von 28 bis 65 µg/1. Beide unterliegen in den obersten 50-100 m einer starken Reduktion (27-75%), die z. T. auf Akkumulation, z. T. auf Mineralisation zurückzuführen ist. Die Einzelwerte für große Tiefen (〉 1000 m) bewegen sich oft an der Grenze der Nachweisbarkeit; die Mittel betragen für das Südgebiet bei 1480 m Tiefe 100 bzw. 80 µg Seston und 6 bzw. 17 µg Eiweiß/l. Aus den Eiweißanalysen wird mit Hilfe tiefenvariabler Faktoren der Gehalt an lebender Substanz errechnet und daraus wieder durch Differenzbildung die mittleren Vlerte für den Detritusgehalt im hohen Ozean. Dieser beträgt an der Oberfläche 520 und 1190 µg/1 und sein Anteil im Spätwinter bzw. Spätsommer am Seston 76 und 79%. Ferner wird ein Vergleich zwischen Mittelwerten der gelösten organischen Substanz (n. Duursma) und denen der lebenden Substanz angestellt. Die Relation beider zu einander beträgt während der Sommeruntersuchungen 14.0 : 1 (51-100 m) bis 48.1 : 1 (401-500 m).
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  • 46
    facet.materialart.
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    Institut für Meereskunde
    Publication Date: 2022-04-07
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  • 47
    facet.materialart.
    Unknown
    Institut für Meereskunde
    Publication Date: 2022-04-07
    Description: Die Konstanz des zellulären ionalen Milieus, insbesondere die Aufrechterhaltung des ursprünglichen zellulären Kalium-Niveaus, ist eine wesentliche Vorbedingung für ein ungeschädigtes Überleben von Wirbellosen und Fischen in Ästuargewässern. The constancy of the cellular ionic medium, especially the maintenance of the original cellular potassium level, is an essential condition for the unharmed survival of invertebrates and fishes in estuarine waters.
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  • 48
    Publication Date: 2022-04-07
    Description: Zur Messung der Temperatur in Gebieten des Meeres mit starken Schwankungen der Schichtung wurde ein Meßverfahren entwickelt, das eine langzeitige Registrierung in einem verankerten Meßgerät erlaubt. Die Messung erfolgt über einen Thermistor in einer Wheatstone-Brücke, die Registrierung auf einem Fallbügelschreiber, die Steuerung über eine elektrische Uhr und Relaisschaltungen. Der Bereich umfaßt bei dem gebauten Gerät - 2° bis + 31° C, die maximal erreichbare Genauigkeit beträgt ± 0,1° C, als Betriebsdauer können bei einem Meßintervall von 5 Minuten ein Zeitraum von 50 Tagen, bei größeren Meßintervallen entsprechend höhere Zeiten erwartet werden. Eine Druckmessung zur Tiefenbestimmung und Eichungen der Anordnung erfolgen automatisch nach jeweils 21 Temperaturmessungen. Es werden das Meßgerät und die Laboratoriumstests sowie das Eichverfahren beschrieben, ferner werden Messungen mit dieser Methode in der Ostsee angegeben.
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  • 49
    Publication Date: 2022-04-07
    Description: Währcnd des in Norddeutschland ungewöhnlich kalten Winters 1962/63 trug die Elbe oberhalb von Hamburg mehrere Wochen lang eine 40-50 cm dicke Eisdecke, unterhalb der Stadt herrschte in dieser Zeit ständiges Eistreiben. Im Rahmen einer mehrjährigen mikrobiologischen Untersuchung wurde der Einfluß der anhaltenden Eisbedeckung auf das Bakterienleben im Strom studiert. Es zeigte sich, daß der Bakteriengehalt des Flullwassers wesentlich stärker als in normalen Wintern anstieg. Er belief sich besonders in dem Abschnitt oberhalb von Hamburg bei allen Stationen auf ein Mehrfaches der in der gesamten etwa 8 jährigen Untersuchungszeit vorher und nachher gewonnenen Maximalwerte. Die Ursache hierfür dürfte in erster Linie in dem Zusammentreffen von sehr geringer Wasserführung und anhaltend niedriger Temperatur liegen. Unter der Eisdecke kam es zu einer starken, vor allem von Mikroorganismen bewirkten Sauerstoffzehrung. Bedingt durch die anaeroben Verhältnisse erfolgte im Fluß eine lebhafte bakterielle Nitratreduktion (Denitrifikation). Diese wurde durch den kräftigen Rückgang des Nitratgehalts deutlich, der zunächst von einem starken Nitritanstieg begleitet wurde. Da die Nitratrcduktion über Nitrit bis zum freien Stickstoff führte, fand sich im Februar 1963 bei den meisten Stationen anorganisch gebundener Stickstoff fast nur noch in Form von Ammoniak. Laborversuche bestätigten, daß auch bei winterlichen Wassertemperaturen die Bakterientätigkeit noch stark genug ist, um den gesamten Sauerstoff in 02-gesättigtem Elbwasser innerhalb von 1 Woche zu verbrauchen. Das in der Elbe befindliche Nitrat kann dann ebenfalls in wenigen Tagen durch denitrifizierende Bakterien völlig über Nitrit zu freiem Stickstoff reduziert werden.
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  • 50
    facet.materialart.
    Unknown
    Institut für Meereskunde
    Publication Date: 2022-04-07
    Description: Im Rahmen einer fischereibiologischen Fahrt von F.F.S. "Anton Dohrn" in das Gebiet der Faröer wurde im Januar 1964 eine eingehende Vermessung der Rosemary-Bank (φ = 59° 15' N, λ = 10° 10' W) durchgeführt.Als geringste Tiefe der isoliert gelegenen und teilweise steil aufragenden Kuppe wurden 325 m erlotet. Das annähernd kreisförmige Gipfelplateau besitzt Tiefen zwischen 400 und 700 m gegenüber 1400 - 2100 m in der weiteren Umgebung (Tafel 1 und 2). Der unsymmetrische Kegel weist nach W und S zu ein stärkeres Gefälle auf als an seinem E-Abhang. Am Fuß umgibt ihn als auffallendste morphologische Erscheinung eine ringförmige Mulde, deren Sohle 50 - 300 m tiefer liegt als der angrenzende Tiefseeboden. Im Anschluß an die Vermessung wurden außerdem zwei benachbarte Bänke abgelotet: Lousy-Bank (φ = 60° 25' N, λ = 12° 25' W) und Bill-Baileys-Bank (φ = 60° 35' N, λ = 10° 20' W). Die Tiefenverhältnisse der Gipfelregionen beider Bänke werden ebenfalls beschrieben (Tafel 3 und 4). In the scope of a fishery biological investigation made with F.R.S. "Anton Dohrn" in the area of the Faeroer Islands in January 1964 the topography of the Rosemary Bank (φ = 59° 15' N, λ = 10° 10' W) was exactly sounded. Lowest depth of the seamount is 325 m. The nearly circular summit plateau has depths between 400 and 700 m compared with soundings of 1400 to 2100 m in the environment (table 1 and 2). The cone which is not absolutely symmetrical is more declinated to the westside than to the east. As the most destinctive morphological phenomenon a ringshaped depression is surrounding the base of thc cone directly. lt is reaching down 50 - 300 m deeper than the neighboring deep sea bottom. In addition the depths of two further banks in the neighborhood of the Rosemary Bank have been sounded and their topography is described as follows: Lousy Bank (φ = 60° 25' N, λ = 12° 25' W) and Bill Baileys Bank (φ = 60° 35' N, λ = 10° 20' W). Bathymetric charts and sounding profiles are given in table 3 and 4.
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  • 51
    Publication Date: 2022-04-07
    Description: Es wurden Nordsee-Exemplare von Carcinides maenas aus Meerwasser von 30‰ Salzgehalt und Ostsee-Exemplare aus Backwasser von 15‰ Salzgehalt vergleichend untersucht. Die Atmungsintensität ganzer Ostsee-Exemplare übertrifft ebenso wie ihre Gewebeatmung die der Nordsee-Exemplare. Dabei ist die Stoffwechselintensität des Kiemengewebes der Ostsee-Individuen auch unabhängig von der Salzkonzentration des Atmungsmediums erhöht. Der Eiweiß- und der Hämocyaningehalt des Blutes der Ostsee-Exemplare sind im allgemeinen größer als der der Nordsee-Exemplare. Durch gekreuzte Anpassungen an Nordseewasser (30‰ S) und Ostseewasser (15‰ S) ließ sich zeigen, daß die Atmungsunterschiede und in zweiter Linie auch der Eiweiß-und der Hämocyaningehalt des Blutes von der Anpassung an den Salzgehalt des Außenmediums abhängig sind. Der Eiweiß- und Hämocyaningehalt des Blutes werden außerdem vom Ernährungszustand der Tiere beeinflußt. Die Ergebnisse machen es wahrscheinlich, daß die genannten physiologischen Unterschiede nicht genetisch fixiert sondern umgebungsbedingt sind. Comparative investigations were made on North Sea specimens of Carcinides maenas from normal sea water (30 per 1,000 S) and on Baltic Sea specimens from brackish water (15 per 1,000 S). The oxygen consumption of whole Baltic Sea specimens and their tissue respiration exceed considerably the corresponding values of North Sea specimens. The respiration of the gill tissue of brackish water specimens is also increased independently from salt concentration of the respiratory medium. The protein as well as the hemocyanin contents of the blood of Baltic-Sea specimens are normally higher than the corresponding values of North-Sea specimens. By alternating adaptation to North Sea Water (30 per 1,000 S) and Baltic Sea Water (15 per 1,000 S) it could be proved that the respiratory differences and secondly also the protein and hemocyanin contents of the blood are influenced by the adaptation to the salinity of the external medium. Besides the hemocyanin content of the blood is influenced by nutritional conditions of the animals. The results suggest that the physiological differences mentioned are environmentally induced rather than genetically fixed.
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  • 52
    Publication Date: 2022-04-07
    Description: Es wird über marin-vegetationskundliche Untersuchungen in der westlichen Ostsee (Kieler Bucht) berichtet. Für die Vegetationsaufnahme wurde eine Unterwasserfernsehanlage eingesetzt. Die Arbeit befaßt sich mit der großräumigen benthischen Vegetationsgliederung in der Kieler Bucht unterhalb der 5-m-Linie. Es werden die ökologischen Vegetationsbedingungen in diesem Gebiet diskutiert und die vegetationsphysiognomisch hervorstechenden Bewuchstypen dargestellt. A report on a survey of the marine vegetation in the western Baltic (Kiel Bay) is given. An underwater television set was employed for the vegetational mappings. This paper deals with the spatial distribution of the benthic vegetation in the Kiel Bay below the 5 m line. The ecological conditions for the vegetation in this area are discussed and the particularities governing the vegetational physiognomy are lined out.
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  • 53
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    Institut für Meereskunde
    Publication Date: 2022-04-07
    Description: Die Hartbodenfauna der Schwentinemündung - ein Brackgewässer im westlichen Ostseebereich wurde untersucht. Der Salzgehalt nimmt in diesem Gewässer besonders in der Oberflächenschicht von der Einmündung in die Kieler Förde bis zu einem 2,4 km entfernt gelegenen Wehr kontinuierlich ab. Die Schwentinemündung läßt sich in 3 gegeneinander abgegrenzte Halinitätszonen gliedern. Jeder dieser Bereiche läßt sich durch eine spezifische Bewuchszone charakterisieren. Das größte Areal nimmt die α-mesohaline Zone ein. Sie wird von einer verarmten arktisch-borealen marin-euryhalinen Hartbodengemeinschaft (Mytilus edulis - Balanus crenatus-Biozönose) besiedelt. Die β-mesohaline Zone wird von einer südlich-borealen, marin-euryhalinen (brackischen) Hartbodengemeinschaft (Balanus improvisus - Membranipora crustulenta-Biozönose) bewohnt. Im α-Oligohalinikum breitet sich eine Grün- und Braunalgenzone aus, die von einer Mikrophytalgemeinschart bevölkert wird, welche sich zum größten Teil aus Brackwasserarten zusammensetzt.
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  • 54
    Publication Date: 2022-04-07
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  • 55
    Publication Date: 2022-04-07
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  • 56
    Publication Date: 2022-04-07
    Description: Im eulitoralen Bereich ebenso wie im Sublitoral wurden aus den jahreszeitlichen Veränderungen der Abundanz- und Dominanzverhältnisse der verschiedenen Fucus bewohnenden Tiergruppen Aspektfolgen erkannt. Es konnte die Eigenständigkeit der einzelnen Aspekte für die eulitorale Fucus-Zone und den Tiefen-Fucus gezeigt werden. Als Aspektbestimmend fielen im Eulitoral die Halacariden auf, während am sublitoralen Fucus die Nematoden besonders dedeutsam waren. Im eulitoralen Bereich stellte sich die Fucus besiedelnde Mikrofauna weitgehend als eine verarmte Fauna des Tiefenphytals dar, wies jedoch auch Arten auf, die in der eulitoralen Facus-Zone ihren optimalen Lebensbereich haben. Nur die Fucus-Bestände des Eulitorals erfüllen die Vorbedingungen eines Eigenbiotopes, für den Tiefen-Fucus ist dies im Ostseeraum nicht der Fall. Einteilung des charakteristischen Artenbestandes der eulitoralen Fucus-Zone in Charakterarten, dominierende Arten und Gäste gestattete das Hervorheben einer Art als Charakterart 1. Ordnung nicht, da keine stenöken Formen auftraten. Solche fanden sich auch unter den Epizoen nicht. Beziehungen zwischen Schleimabsonderung der Algen, Salinität und Ansiedlung von Bryozoen an bestimmten Teilen der Einzelpflanzen wurden bemerkt. Die Verbreitung einiger Amphipoden, Isopoden und Polychaeten an Fucus wurde kurz erörtert.
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  • 57
    facet.materialart.
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    Institut für Meereskunde
    Publication Date: 2022-05-11
    Description: Das Eulitoral des Roten Meeres ist trotz des extrem ariden Klimas, der hohen Insolation und des hohen Salzgehaltes von einer reichen Mikrofauna besiedelt. Die stärkste Artenentfaltung liegt im Bereich der sandsammelnden Rotalge Digenia simplex, die bisher noch nicht bekannte Lebensbedingungen im Eulitoral schafft. Die Sandregionen haben eine interstitielle Fauna, die in Zusammensetzung und Artenreichtum der der übrigen Meere ähnelt. Auch das subterrane Küstengrundwasser, das hier nur aus salzreichem Wasser besteht, enthält ebenfalls eine reiche Fauna. Die Anwurfzone (Wrack-Region) der Küste ist dagegen infolge der raschen Austrocknung des angespülten Pflanzenmaterials artenarm.
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  • 58
    Publication Date: 2022-05-11
    Description: In der Umgebung der Biologischen Station von Al Ghardaqa am Roten Meer wurden in verschiedenen Uferzonen freilebende Nematoden gesammelt. 49 verschiedene Arten wurden identifiziert, davon erwiesen sich 8 als neu. Die neuen Arten werden zusammen mit einer Anzahl bisher unzureichend bekannter Formen beschrieben.
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  • 59
    Publication Date: 2022-05-11
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  • 60
    Publication Date: 2022-05-11
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  • 61
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    Institut für Meereskunde
    Publication Date: 2022-05-11
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  • 62
    Publication Date: 2023-01-16
    Description: The coagulation of hydrosols was investigated theoretically and experimentally. A reduced form of the particle size distribution function, designated “self-preserving,” was found to satisfy Smoluchowski's equations of coagulation by Brownian motion and shear flow. Brownian motion coagulation experiments with two heterogeneous hydrosols showed that the distributions were self-preserving. The rate of coagulation for heterogeneous systems was found to be second order in total particle concentration, consistent with the self-preserving form of the distribution function. Coagulation experiments were carried out in a simple laminar shear field using a homogeneous Dow polystyrene latex dispersion. Smoluchowski's shear flow theory was confirmed for shear rates ranging from 1 to 80 sec.−1 The shear coagulation of a heterogeneous emulsion was studied at several shear rates, and the size distributions were self-preserving.
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  • 63
    facet.materialart.
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 105 pp
    Publication Date: 2019-09-23
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  • 64
    facet.materialart.
    Unknown
    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 86 pp
    Publication Date: 2017-06-09
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  • 65
    facet.materialart.
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 143 pp
    Publication Date: 2017-04-06
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  • 66
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    The Zoological Society of London
    In:  Proceedings of the Zoological Society of London, 121 (2). pp. 279-283.
    Publication Date: 2020-06-05
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  • 67
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    Zhongguo Diqiu Wuli Xuehui zhuban
    In:  Journal of the Chinese Geophysical Society , 2 . pp. 1-13.
    Publication Date: 2020-07-16
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  • 68
    facet.materialart.
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 133 pp
    Publication Date: 2017-08-04
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  • 69
    facet.materialart.
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    In:  (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 92 pp
    Publication Date: 2017-04-04
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  • 70
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    Springer
    In:  Biochemische Zeitschrift, 322 . pp. 118-120.
    Publication Date: 2019-05-09
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  • 71
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    Institut für Meereskunde
    Publication Date: 2022-02-14
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  • 72
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    Institut für Meereskunde
    Publication Date: 2022-02-14
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    Publication Date: 2022-02-14
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    Publication Date: 2022-02-14
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    Publication Date: 2022-02-14
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  • 77
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    Institut für Meereskunde
    Publication Date: 2022-02-14
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  • 78
    Publication Date: 2022-02-14
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    Publication Date: 2022-02-14
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  • 82
    Publication Date: 2023-08-16
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