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  • 1
    Language: English
    In: Arachnologische Mitteilungen, 01 November 2015, Vol.50, pp.i-v
    Description: obituary for Heiko Bellmann
    Keywords: Obituary ; Bibliography ; Zoology
    ISSN: 1018-4171
    E-ISSN: 2199-7233
    Source: Directory of Open Access Journals (DOAJ)
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  • 2
    In: Proceedings of the National Academy of Sciences of the United States, Dec 19, 2000, Vol.97(26), p.14091
    Description: We characterize two green fluorescent proteins (GFPs), an orange fluorescent protein, and a nonfluorescent red protein isolated from the sea anemone Anemonia sulcata. The orange fluorescent protein and the red protein seem to represent two different states of the same protein. Furthermore, we describe the cloning of a GFP and a nonfluorescent red protein. Both proteins are homologous to the GFP from Aequorea victoria. The red protein is significantly smaller than other GFP homologues, and the formation of a closed GFP-like [Beta]-can is not possible, Nevertheless, the primary structure of the red protein carries all features necessary for orange fluorescence. We discuss a type of [Beta]-can that could be formed in a multimerization process.
    Keywords: Sea Anemones -- Research ; X-ray Spectroscopy -- Usage ; Protein Structure ; Green Fluorescent Proteins
    ISSN: 0027-8424
    E-ISSN: 10916490
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  • 3
    Language: English
    In: Macromolecules, 05/1990, Vol.23(10), pp.2623-2628
    Description: Préparation de microgels de 1,4-divinybenzène (DVB) hautement réticulés ayant une coque de poly(4-t-butylstyrène) (PtBS) en utilisant des chaînes de PtBS vivantes comme amorceur et comme stabilisateurs stériques des particules. Etude des propriétés de microgels (masse moléculaire, viscosité intrinsèque etc) en fonction des paramètres de polymérisation (masse moléculaire du PtBS, concentration de DVB, etc). Proposition d'un mécanisme pour la formation du microgel.
    Keywords: Chemistry;
    ISSN: 0024-9297
    E-ISSN: 1520-5835
    Source: American Chemical Society (via CrossRef)
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  • 4
    Article
    Article
    Language: English
    In: Progress in Organic Coatings, 2002, Vol.44(1), pp.9-14
    Keywords: Engineering ; Chemistry
    ISSN: 0300-9440
    E-ISSN: 1873-331X
    Source: ScienceDirect Journals (Elsevier)
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  • 5
    Language: German
    In: Oecologia, 1968, Vol.2(1), pp.19-142
    Description: It is known that numerous gastropods show homing ability. Many limpets return to well defined sites. L. acquires a home spot also on the smooth glass surfaces of aquarium. Before leaving, the limpet scrapes its home, particularly the anterior part of the footprint. After each return it makes characteristic movements with its shell. When homing nearly always retraces its outward track, at least in part; sometimes it reaches its home over the shortest route possible. Site and tracks are marked by chemical substances. The animal orientates itself by contact chemoreception on the track and by distance chemoreception when near its home. Apparently there also exists a kinesthetic mechanism of orientation based on a measurement of distance on the outward journey. At the home spot always manoeuveres exactly into the same position. Often it has to turn or to glide around slightly. It finally settles down with small movements of its shell. The footprint shows chemical differences in a wide marginal zone. Probably, different chemoreceptors on the sole of the foot are associated to the various regions of the footprint. The chemical differentiation of the footprint has the same orientation-value for all individuals of the same size group. In addition there exists an individual marking, shown e.g. by avoidance reactions of alien animals. The individual specificity of the foot's secretum is particularly marked on the tracks, for each follows its own trail only and thus normally reaches its own home. On an uneven substratum this is the only place where the margin of its shell fits the ground exactly. For establishing a home site and keeping to it, several environmental conditions have to be met. settles only on surfaces overgrown with small algae. In an aquarium it favours the sides most exposed to light. On vertical walls the animal is gravity-oriented. Most limpets are attached head-end down. is able to perceive the distance from the water-line, and may orient itself with respect to fixed objects in the aquarium by means of a “Ferntastsinn”. When first choosing a home spot on an uneven substratum, the limpet often adjusts its position by turning movements, so that the contacts between shell and ground are as close as possible. Selective growth at the shell's margin then results in a perfect fit to the irregularities of the ground. All prerequisites for the establishment of a home site are also determining the animal's keeping to its home. If changes are introduced with respect to the fitting of the shell to the ground, to the position of neighbouring objects, to water-level, light, or direction of gravity, the animal may leave its home site and reorient itself in an equivalent new one. The attractiveness of the chemical markings of the old site nevertheless compete with all these conditions for some time. Rest and activity are controlled by light-dark and tidal cycles. — Inter-and intraspecific differences were obtained under experimental conditions. Almost all individuals were preferentially active in darkness. moved at high tide; was active either at low tide only, or both at high and low tide, or — rarely—at high tide only. All animals reacting to tidal rhythms were synchronized even by unnaturally frequent changes in the water-level. The tidal dependence of the activity of individual may perhaps be interpreted as the persistence of an adaptation to drought and submergence acquired at the original habitat. The reactive ability towards high and low tide can be modified. The activity-phase may be stopped prematurely by changing light or tidal conditions. Animals keeping constantly to their homes returned to them at once, whereas others — having no defined home —generally prolonged their excursions. When light and water-level are kept constant the locomotory activity of and has the characteristics of an endogenous tidal rhythm. Changes in water-level soon approximately catch the freerunning periodicity, alteration of light and darkness synchronize it less readily but more precisely.
    Keywords: Biology ; Ecology;
    ISSN: 0029-8549
    E-ISSN: 1432-1939
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  • 6
    Language: English
    In: Macromolecules, 04/1995, Vol.28(8), pp.2728-2737
    ISSN: 0024-9297
    E-ISSN: 1520-5835
    Source: American Chemical Society (via CrossRef)
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  • 7
    In: Die Geschäftsbanken in der Bundesrepublik Deutschland, 1980, pp. 32-37
    Source: Deutsche Zentralbibliothek für Wirtschaftswissenschaften
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  • 8
    Language: English
    In: Anti-Corrosion Methods and Materials, 01 March 1984, Vol.31(3), pp.4-7
    Description: In the original paper, after reviewing the mechanism of corrosion protection by active anti-corrosive pigments and corrosive influences, the barrier principle is discussed as an alternative to develop environmentally safer corrosion protective coatings. It is demonstrated how, by using barrier pigments, good protective properties may be achieved which may also operate when coatings are damaged.
    Keywords: Engineering
    ISSN: 0003-5599
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  • 9
    Language: English
    In: Journal of the Marine Biological Association of the United Kingdom, 2007, Vol.87(4), pp.851-852
    Description: The competition for space among fluorescent and nonfluorescent species was monitored in the Mediterranean Sea in order to see whether the fluorescent species var. was a better competitor in shallow water habitats. Over a period of 11 years, var. convincingly out competed the nonfluorescent . We thereby found support for the notion that the GFP-like pigments may increase competitive ability in anthozoans.
    Keywords: Competitors ; Marine Invertebrates ; Interspecific Relationships ; Shallow Water ; Pigments ; Pigments ; Habitat ; Competition ; Anemonia ; Smaragdina ; Med ; Marine ; Ecosystem and Ecology Studies ; Ecology/Community Studies ; Species Interactions: General;
    ISSN: 0025-3154
    E-ISSN: 1469-7769
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  • 10
    Language: English
    In: Pharmaceutical Technology, May, 2010, Vol.34(5), p.48
    Description: The nonionic surfactant polysorbate 80 is widely used in pharmaceutical formulations. Regulatory authorities are increasingly asking pharmaceutical manufacturers for methods to quantify the amount of surfactants and other ingredients in a final drug product. Polysorbate 80 and other nonionic surfactants are not charged and they do not have a chromophore. In the past, these properties have required a time-consuming derivatization of the analytes to introduce a chromophore for determination with high-performance liquid chromatography (HPLC) and ultraviolet detection. The authors compared the effectiveness of HPLC and fast HPLC in combination with an evaporative light-scattering detector and with a charged aerosol detector in quantifying polysorbate 80. [PUBLICATION ]
    Keywords: Surface Active Agents -- Analysis
    ISSN: 1543-2521
    E-ISSN: 21507376
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