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  • Springer  (94)
  • Springer Nature  (50)
  • Oxford University Press  (20)
  • 11
    Electronic Resource
    Electronic Resource
    Interactions of the solvent acetone with the fungicides benomyl and captan in fungal assays (1980)
    Springer
    Bulletin of environmental contamination and toxicology 25 (1980), S. 554-561 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01985571
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  • 12
    Electronic Resource
    Electronic Resource
    Histological aspects of in situ hybridization (1986)
    Springer
    Histochemistry and cell biology 85 (1986), S. 505-514 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This study examined the detection of cellular poly(A) sequences in mouse liver sections by in situ hybridization using a 3H-labelled poly(dT) probe. Parameters examined included possible losses of target poly(A) sequences from sectioned cells, access of probe to target sequences, section thickness, hybridization conditions, autoradioigraphic efficiency, specific activity of probes and specificity of reaction. An improved protocol was devised that resulted in good preservation of histological detail in sectioned tissue blocks, and a calculated hybridization efficiency of 50%–100%. With the use of probes of defined sequence, the protocol should allow detection of unique mRNA sequences within single cells with an estimated sensitivity of 6–12 unique mRNA molecules per sectioned cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00508433
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  • 13
    Electronic Resource
    Electronic Resource
    Development of an optimal heterotrophic growth medium for Chlorella vulgaris (1984)
    Springer
    Applied microbiology and biotechnology 20 (1984), S. 281-283 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Final biomass yields of Chlorella vulgaris cultured heterotrophically in bristol medium amended with 0.1% (w/v) yeast extract (Difco) or 0.5% glucose (w/v) were 26 and 58 times higher, respectively, than yields obtained for autotrophically grown cells in the light. Similarly, final biomass increases were 35 and 138 fold for these organic substrates in the dark. The mixture of 0.1% yeast extract and 0.5% glucose was optimal and produced increases in final biomass of 70 and 140 times in the light and dark, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00250641
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  • 14
    Electronic Resource
    Electronic Resource
    Genetic manipulation in cultivars of oilseed rape (Brassica napus) using Agrobacterium (1985)
    Springer
    Theoretical and applied genetics 71 (1985), S. 325-329 
    Details
    ISSN: 1432-2242
    Keywords: A. tumefaciens ; A. rhizogenes ; Brassica napus ; Plant development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The response of oilseed rape cultivars to infection with Agrobacterium tumefaciens and A. rhizogenes and the possibility of regenerating genetically transformed oilseed rape plants were examined. The frequency at which Agrobacterium induced galls or hairy-roots on in vitro cultured plants ranged from 10% to 70%, depending on the cultivar. From galls induced by the tumorigenic strain T37, known to be strongly shoot inducing on tobacco, roots developed frequently. Occasionally, shoots formed and some of these produced tumour cell specific nopaline. Attempts to grow the transformed shoots into plants have so far been unsuccessful. Whole plants transformed with Ri-T-DNA, however, were regenerated. These had crinkled leaves and abundant, frequently branching roots that showed reduced geotropism, similar to previously isolated Ri T-DNA transformed tobacco and potato plants. The transformed oilseed rape plants flowered, but failed to form seeds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00252075
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  • 15
    Electronic Resource
    Electronic Resource
    Dynamic capacity allocation and hybrid multiplexing techniques for ATM wireless LANs (1998)
    Springer
    Mobile networks and applications 3 (1998), S. 307-316 
    Details
    ISSN: 1572-8153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract We consider digital wireless multimedia LANs and time‐varying traffic rates. To deal effectively with the dynamics of the time‐varying traffic rates, a Traffic Monitoring Algorithm (TMA) is deployed to dynamically allocate channel capacities to the heterogeneous traffics. The TMA is implemented as a higher level protocol that dictates the capacity boundaries within two distinct framed transmission techniques: a Framed Time Domain‐Based (FTDB) technique and a Framed CDMA (FCDMA) technique. The performance of the TMA in the presence of the FTDB technique is compared to its performance in the presence of the FCDMA technique for some traffic scenarios. The performance metrics used for the TMA‐FTDB and TMA‐FCDMA combinations are channel capacity utilization factors, traffic rejection rates, and traffic delays. It is found that the TMA‐FTDB is superior to the TMA‐FCDMA when the speed of the transmission links is relatively low and the lengths of the transmitted messages are relatively short. As the speed of the transmission links and the length of the transmitted messages increase, the TMA‐FCDMA eventually outperforms the TMA‐FTDB.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019141202797
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  • 16
    Electronic Resource
    Electronic Resource
    Effects of gamma radiation on the development of the Caribbean fruit fly (Anastrepha suspensa) and the subsequent development of its parasite Diachasmimorpha longicaudata (1990)
    Springer
    Entomologia experimentalis et applicata 55 (1990), S. 295-297 
    Details
    ISSN: 1570-7458
    Keywords: Biocontrol ; sterilization ; mass release
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190669
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  • 17
    Electronic Resource
    Electronic Resource
    A method of removing helium ash and impurities from fusion reactors (1981)
    Springer
    Journal of fusion energy 1 (1981), S. 245-252 
    Details
    ISSN: 1572-9591
    Keywords: Impurity control ; plasma purity ; pellets ; pellet pumping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract By injecting streams of small pellets through the edge of a reactor plasma, helium ash and other impurities can be captured and removed from the reactor. Calculations show that sufficient pumping capacity is available to remove 1021 He/s and that the equilibrium density of pellet material in the plasma is probably tolerable. If successful, this method of ash removal and impurity control simplifies reactor design considerably.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01050357
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  • 18
    Electronic Resource
    Electronic Resource
    Traffic monitoring for capacity allocation of multimedia traffic in ATM broadband networks (1998)
    Springer
    Telecommunication systems 9 (1998), S. 173-206 
    Details
    ISSN: 1572-9451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract We address the accommodation of multimedia traffic by ATM broadband networks. We isolate a single network channel and we search for capacity allocation/transmission multiplexing policies which satisfy all traffic QOSs with simultaneous high utilization of channel capacity resources, in the presence of variable traffic rates. Towards that direction, we superimpose a high-level traffic-monitoring protocol which determines capacity allocations for each traffic category, dynamically. The latter protocol has sequential and implementation-efficient characteristics, and induces moving boundaries within prespecified and fixed channel frames. The channel frames are selected to satisfy the jittering constraints of all the traffics, such as voice, video and high versus low speed data. The high level protocol, in conjunction with the channel frame structure and the specifics of the transmission policy, may satisfy all traffic QOSs and may simultaneously attain high channel utilization, for certain variability conditions of the traffic rates and at relatively low implementation cost. Performance analysis as well as numerical evaluations are provided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019143822748
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  • 19
    Electronic Resource
    Electronic Resource
    Mercury levels in freshwater fish of the state of South Carolina (1977)
    Springer
    Bulletin of environmental contamination and toxicology 17 (1977), S. 82-89 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Samples of fish from freshwater sources of rivers, lakes and ponds all over the state of South Carolina were collected during the Summer of 1974 and 1975. The fish collected were Bass,A Bluegill, Redbreast, Catfish, Shad, Carp, Crappie, Mudfish and Pike. Samples were analyzed using the flameless atomic absorption procedure outlined by Hatch and Ott, and Uthe et al as modified for use with Perkin-Elmer, Coleman MAS-50 mercury analyzer. Triplicate samples of fish tissue were analyzed by wet digestion method. The mean mercury levels in ppb were determined for baseline mercury levels. A significant finding of this report is that those species for which fish of widely differing weights were analyzed, larger fish had higher mercury levels. Mercury levels exceeding the U.S. Food and Drug Administration guideline of 500 ppb for fish tissues have been found in the Mudfish from Edisto River and Pike fish from Lake Murray. Higher levels of mercury occurred in the highly vascularized blood tissues of liver and kidney than in muscle. Carnivorous and bottom-feeding fishes are the most reliable indicators of mercury pollution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685266
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  • 20
    Electronic Resource
    Electronic Resource
    Changes in translatable poly(A) RNA from differentiated potato tissues transformed with shoot-inducing Ti TL-DNA of Agrobacterium tumefaciens (1986)
    Springer
    Plant molecular biology 6 (1986), S. 213-220 
    Details
    ISSN: 1573-5028
    Keywords: Crown gall ; cytokinins ; in vitro translation ; poly(A) RNA ; potato ; T-DNa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two dimensional gel electrophoresis was used to examine differences in steady state total poly(A) RNA from untransformed potato (Solanum tuberosum cv. Maris Bard) and potato transformed with shoot-inducing TL-DNA from A. tumefaciens. RNA was compared from phenotypically very distinct in vitro cultured shoots, more similar grafted plants and tubers. In each case between 200–400 translation products were identified representing the more abundant poly(A) mRNA's. In general, poly(A) RNA from the transformed tissues gave more high molecular weight products. This increase was most evident in poly(A) RNA from shoot cultures. Depending on the tissue examined, 1–5% of the translation products with a molecular weight 〈43 KD were observed to increase or decrease in abundance. The influence of T-DNA on cellular gene expression in the different transformed potato tissues is discussed in relation to previously determined changes in T-DNA gene expression (particularly of the T-DNA cytokinin gene) and the corresponding changes in endogenous hormone concentrations. It is concluded that some of the specific changes in low molecular weight products are either directly caused by the increased cytokinin levels or are indirectly involved in maintaining the transformed phenotype. re]19850530 rv]19851206 ac]19851210
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00015227
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