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  • 1
    Electronic Resource
    Electronic Resource
    Lateral diffusion of plastocyanin in multilamellar mixed-lipid bilayers studied by fluorescence recovery after photobleaching (1984)
    s.l. : American Chemical Society
    Biochemistry 23 (1984), S. 4044-4051 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00313a006
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  • 2
    Electronic Resource
    Electronic Resource
    Synergistic effect of rabbit specific antiserum and amikacin on the treatment of mice with lethal infection due toKlebsiella pneumoniae (1981)
    Springer
    Cellular and molecular life sciences 37 (1981), S. 956-957 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A combination of rabbit specific antiserum and amikacin showed a synergistic effect on the treatment of mice with lethal infections due to a strain ofKlebsiella pneumoniae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01971775
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  • 3
    Electronic Resource
    Electronic Resource
    Ultraplankton growth rates in a subtropical ecosystem (1983)
    Springer
    Marine biology 76 (1983), S. 213-218 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ultraplankton (cell diameters 〉3 μm), which compromises about 70% of the biomass of phytoplankton in subtropical surface waters near Oahu, Hawaii, was isolated for growth rate studies. The specific growth rate (μ) was estimated from the rate of increase of the chlorophyll biomass during incubations in the absence of grazers. This growth rate of the ultraplankton ranged from 0.037 to 0.071 h−1 (=1.3 to 2.5 doublings d−1) during a period when P:B ratios of 5 to 14.5 μg C μg−1 chl a h−1 prevailed. The co-occurrence of atypically high P:B ratios and nonlimiting ambient nutrient concentrations suggests that the calculated values are higher than those characteristic of such subtropical ecosystems in general. Rates of ammonium uptake and photosynthesis by the 〉3 μm fraction were also compared to those of larger fractions. Organisms in the 〉3 μm fraction assimilated NH 4 + at a rate which was about 75% greater than that of the 3 to 20 μm size fraction. Comparison of μ and P:B data collected over a 2 mo period (November–December, 1980) shows that the correlation between these two rate indices is nonlinear. The predominance of small-celled phytoplankton in oligotrophic waters is explained, in part, by its higher μ, its higher nutrient assimilation rates, and the absence of its loss through sedimentation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392737
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Abundance of picophytoplankton in the subsurface chlorophyll maximum layer in subtropical and tropical waters (1984)
    Springer
    Marine biology 79 (1984), S. 177-186 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A distinctive chlorophyll maximum was detected around 60-m depth in the western North Pacific Ocean and the South China Sea, and almost 55% of the total chlorophyll in the entire water column was found within 50 m around the subsurface chlorophyll maximum (SCM) layer. More than 70% of the chlorophyll was contained in picoplankton which passed through a 3-μm Nuclepore but retained on 0.22-μm Millipore filters at the SCM as well as the surface layers. By transmission electron microscopic observations, the picoplankton were identified as aChlorella-like coccoid green alga having a section size of 1.2 to 1.5 μm and cyanobacteria of 0.5 to 2 μm. No obvious difference in these two dominant groups was observed in the SCM and the surface samples except in numerous and heavily stacked thylakoids in the former samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00951826
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  • 5
    Electronic Resource
    Electronic Resource
    Evaluation of coastal upwelling effects on phytoplankton growth by simulated culture experiments (1983)
    Springer
    Marine biology 76 (1983), S. 271-278 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Upwelling effects of subsurface water on phytoplankton growth were evaluated by 9 simulated culture experiments of coastal upwelling. Particular attention was paid to the effects of nutrient enrichment on the surface phytoplankton by the upwelling of nutrient rich subsurface water and of the exposure of the subsurface phytoplankters to surface radiation. The following are the results obtained: the lag period of phytoplankton growth was inversely related to water temperature; the maximum yield of phytoplankton was proportional to the amounts of available initial nutrients; the specific growth rates of phytoplankton were a function of both the initial nutrient concentrations and water temperature; and the maximum specific growth rate was simply proportional to water temperature. According to the relations found, a simple equation is presented for the estimation of phytoplankton growth in a given upwelling. Succession of species in the phytoplankton assemblage in upwelled water mass was also taken into consideration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393028
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  • 6
    Electronic Resource
    Electronic Resource
    Size structure of phytoplankton biomass and photosynthesis in subtropical Hawaiian waters (1983)
    Springer
    Marine biology 76 (1983), S. 203-211 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In a subtropical Hawaiian ecosystem, phytoplanton size structure analyses (November–December, 1980) showed that ultraplankton (〉3μm), nanoplankton (〉20μm) and netplankton (〉20μm) accounted for ca. 80, 98, and 2% of total chlorophyll standing stock, respectively, on the basis of chlorophyll. Similar trends were evident, for other biomass indices (e.g. cell numbers, total cell volume, ATP, particulate organic carbon, particulate organic nitrogen). The ultraplankton fraction consisted primarily of small flagellates (1 to 3 μm diam) and coccoid cells (≊1 μm diam); the 3 to 20 μm fraction was represented by dinoflagellates, coccolithophores, diatoms, and chrysophytes; and the netplankton fraction consisted principally of dinoflagellates and centric diatoms. Community photosynthesis had a size distribution similar to that of biomass. Sinking rates for the 3 μm, 3 to 20 μm, and 〉20 μm fractions averaged 0.0, 0.09, and 0.29m d−1, respectively. The absence of measurable sinking rates for the ultraplankton, together with the relative abundance of biomass in this fraction, result in very small phytoplankton losses due to sinking in such subtropical surface waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392736
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  • 7
    Electronic Resource
    Electronic Resource
    Measurement of photosynthetic production of a marine phytoplankton population using a stable 13C isotope (1983)
    Springer
    Marine biology 73 (1983), S. 31-36 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The use of stable isotope of carbon, 13C, for the determination of the photosynthetic rate of a marine phytoplankton population was examined. Particular concern was paid to the effects of non-phytoplanktonic organic carbon and the enrichment of inorganic carbon on the estimation of the photosynthetic rate. Photosynthetic rates determined by the 13C method showed a remarkable agreement with those determined by the 14C method. Insitu determinations of photosynthetic rate were made in three different water types: open ocean, coastal and neritic waters, which included oligo- and mesotrophic waters, by using the 13C method established.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00396282
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  • 8
    Electronic Resource
    Electronic Resource
    Cytochemical changes in lactate dehydrogenase isoenzymes in human brain tumours (1984)
    Springer
    Acta neurochirurgica 71 (1984), S. 243-253 
    Details
    ISSN: 0942-0940
    Keywords: Brain tumours ; LDH isoenzyme ; cytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The lactate dehydrogenase (LDH) isoenzyme patterns in benign and malignant brain tumours were determined by means of electrophoresis of the cell extracts and selective cytochemical stain of the smears. The LDH isoenzyme distribution of the cell extracts showed a pronounced cathodal shift in the malignant gliomas and metastatic carcinomas. Normal brain tissues and histologically benign gliomas, however, showed an anodal pattern with a dominance of the H-type LDH. Schwannomas and meningiomas had a midzone isoenzyme pattern with a dominant LDH3 fraction. Pituitary adenomas usually showed the LDH pattern similar to that of the normal cerebrum. The LDH M fraction could be cytochemically verified using an inhibitory effect by 2.6 M urea in staining. Astrocytomas grades 3–4 and metastatic carcinomas were characterized by loss or marked reduction of stainability by urea treatment, while astrocytomas grades 1–2 and oligodendrogliomas were resistant to urea inhibition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401319
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  • 9
    Electronic Resource
    Electronic Resource
    Purification of membrane-bound polyvinyl alcohol oxidase in Pseudomonas sp. VM15C (1983)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 20 (1983), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Polyvinyl alcohol (PVA) was utilized by a symbiotic mixed culture which was composed of Pseudomonas putida VM15A and Pseudomonas sp. VM14C. The PVA oxidase was found in the culture fluid, membrane, and cytosol fractions of VM15C. The membrane-bound PVA oxidase was purified by several steps of chromatography. The enzyme (pI= 9.6) exhibited the maximum activity at pH 8.0 to 8.4 and 45°C, and utilized secondary alcohol as well as PVA. The enzyme showed the PVA dehydrogenating activity linking with phenazine ethosulfate, indicating the possibility that PVA oxidation is coupled with an electron transport chain on the bacterial membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1983.tb00162.x
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  • 10
    Electronic Resource
    Electronic Resource
    Cytogenetic studies of familial Prader-Willi syndrome (1984)
    Springer
    Human genetics 〈Berlin〉 65 (1984), S. 325-330 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A family in which two first cousins were found to have the Prader-Willi syndrome was investigated cytogenetically. Although G-banding analysis of metaphase chromosomes failed to demonstrate abnormality, close analyses on the fine prometaphase bands by G-banding and the DA-DAPI bands by double stainings revealed a distinct chromosome abnormality in this family. A reciprocal translocation, rep(14:15)(q11.2;q13), was detected in three family members: the mother, the maternal grandmother, and a maternal uncle of the proband. And, the proband and one of the first cousins had an unbalanced translocation that was derived from their carrier parents. The karyotypes of the affected cousins were determined as 46,XY or XX,-15,+der(14),rcp(14;15)(q11.2;q13). Therefore, they were considered to have an identical cytogenetic abnormality: a partial trisomy of the 14pter→q11.2 segment and a partial monosomy of the 15pter→q13 segment. Detailed clinical features of the proband and his affected cousin are described, main features associated with the Prader-Willi syndrome having been observed in both cousins. These observations support a definite relationship between the Prader-Willi syndrome and chromosome 15.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00291556
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