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  • Articles  (20)
  • Oxford University Press  (11)
  • Blackwell Publishing Ltd  (6)
  • American Association for the Advancement of Science (AAAS)  (3)
  • Deutsches GeoForschungsZentrum GFZ
  • 2000-2004  (20)
  • 2002  (20)
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  • 2000-2004  (20)
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  • 1
    Electronic Resource
    Electronic Resource
    Quality Factors of Terrestrial Snail Products as Affected By the Species (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : The influence of different snail species on the quality of spiced-butter preparation was investigated with regard to labeling, using sensory and instrumental methods. Although sensory as well as instrumentally measured quality attributes indicated differences between the compared species, the sensory panel did not express a preference for a particular species. Differences were most significant between Achatina fulica and Helix aspersa, and between these compared to Helix pomatia or Helix lucorum with regard to color (lightness and redness) and texture (hardness and chewiness). Differences between H. pomatia and H. lucorum were insignificant. Consequently, labeling of products prepared from H. lucorum as non-vineyard snails on grounds of scientific reason is not necessary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb08874.x
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  • 2
    Electronic Resource
    Electronic Resource
    Determination and Health Implication of the Erucic Acid Content of Broccoli Florets, Sprouts, and Seeds (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The erucic acid content of broccoli florets, sprouts, and seeds was found to be about 0.8, 320, and 12100 mg/100 g, respectively. Using the erucic acid limit established for canola oil in the U.S.A. and Canada as a guideline, the estimated dietary intake of erucic acid from florets and sprouts was considered of little consequence, whereas in seeds a relatively small amount (about 35 g/wk) equaled our calculated exposure limit for erucic acid. Additionally, the most complete fatty acid distribution yet published for the various forms of broccoli are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb08791.x
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  • 3
    Electronic Resource
    Electronic Resource
    Prediction of Diffusion Coefficients in Porous Media Using Tortuosity Factors Based on Interfacial Areas (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 40 (2002), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Determination of aqueous phase diffusion coefficients of solutes through porous media is essential for understanding and modeling contaminant transport. Prediction of diffusion coefficients in both saturated and unsaturated zones requires knowledge of tortuosity and constrictivity factors. No methods are available for the direct measurement of these factors, which are empirical in their definition. In this paper, a new definition for the tortuosity factor is proposed, as the real to ideal interfacial area ratio. We define the tortuosity factor for saturated porous media (τs) as the ratio S/So (specific surface of real porous medium to that of an idealized capillary bundle). For unsaturated media, tortuosity factor (τa) is defined as 2awla (ratio of the specific air-water interfacial area of real and the corresponding idealized porous medium). This tortuosity factor is suitably measured using sorptive tracers (e.g., nitrogen adsorption method) for saturated media and interfacial tracers for unsaturated media. A model based on this new definition of tortuosity factors, termed the interfacial area ratio (IAR) model, is presented for the prediction of diffusion coefficients as a function of the degree of water saturation. Diffusion coefficients and diffusive resistances measured in a number of saturated and unsaturated granular porous media, for solutes in dilute aqueous solutions, agree well with the predictions of the IAR model. A comparison of permeability of saturated sands estimated based on τs and the same based on the Kozeny-Carman equation confirm the usefulness of the τs parameter as a measure of tortuosity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.2002.tb02512.x
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  • 4
    Electronic Resource
    Electronic Resource
    Isolation and Expression of Two Genes Encoding Eukaryotic Release Factor 1 from Paramecium tetraurelia (2002)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 49 (2002), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . Paramecium tetraurelia, like some other ciliate species, uses an alternative nuclear genetic code where UAA and UAG are translated as glutamine and UGA is the only stop codon. It has been postulated that the use of stop codons as sense codons is dependent on the presence of specific tRNAs and on modification of eukaryotic release factor one (eRFl), a factor involved in stop codon recognition during translation termination. We describe here the isolation and characterisation of two genes, eRF1-a and eRF1-b, coding for eRFl in P. tetraurelia. The two genes are very similar, both in genomic organization and in sequence, and might result from a recent duplication event. The two coding sequences are 1,314 nucleotides long, and encode two putative proteins of 437 amino acids with 98.5% identity. Interestingly, when compared with the eRFl sequences either of ciliates having the same variant genetic code, or of other eukaryotes, the eRFl of P. tetraurelia exhibits significant differences in the N-terminal region, which is thought to interact with stop codons. We discuss here the consequences of these changes in the light of recent models proposed to explain the mechanism of stop codon recognition in eukaryotes. Besides, analysis of the expression of the two genes by Northern blotting and primer extension reveals that these genes exhibit a differential expression during vegetative growth and autogamy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.2002.tb00215.x
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  • 5
    Electronic Resource
    Electronic Resource
    Interactions between ectomycorrhizal symbiosis and fluorescent pseudomonads on Acacia holosericea: isolation of mycorrhiza helper bacteria (MHB) from a Soudano-Sahelian soil (2002)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 41 (2002), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Acacia holosericea seedlings were planted in 1-l pots filled with a soil collected from an Australian Acacia plantation in Southern Senegal. After 6 months of culture, mycorrhizosphere soil, roots, galls induced by root-knot nematodes and Rhizobium nodules were sampled from each pot. The diversity of this bacterial group was characterized by siderotyping (pyoverdine IsoElectric Focusing (IEF) analysis) and by restriction fragment length polymorphism (RFLP). The effect of these isolates on the establishment of the ectomycorrhizal symbiosis between an Australian Acacia (A. holosericea) and Pisolithus sp. strain IR100 was studied. In the mycorrhizosphere soil, the population of fluorescent pseudomonads was represented by strains of two different siderovars (groups of bacterial strains presenting an identical pyoverdine–IEF pattern): siderovar 1 (74%) and siderovar 2 (26%). The siderotyping of the isolates around galls of the root-knot nematodes revealed three siderovars (40% from siderovar 1, 40% from siderovar 2 and about 15% from siderovar 3). RFLP of 16S rDNA divided the isolates into four different groups with MspI, two with HhaI and two with HaeIII endonucleases. The establishment of the ectomycorrhizal symbiosis with A. holosericea was promoted by 14 bacterial strains isolated from the mycorrhizosphere soil, three isolates from the roots and four from the galls. Shoot biomass of A. holosericea seedlings was stimulated by eight bacterial isolates from soil, six isolates from galls and seven from roots. These mycorrhiza helper bacteria could have a great ecological importance in tropical areas through the reforestation programs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2002.tb00964.x
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  • 6
    Electronic Resource
    Electronic Resource
    A possible pitfall in the identification of Burkholderia mallei using molecular identification systems based on the sequence of the flagellin fliC gene (2002)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS immunology and medical microbiology 34 (2002), S. 0 
    Details
    ISSN: 1574-695X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Amotile Burkholderia mallei and motile Burkholderia pseudomallei display a high similarity with regard to phenotype and clinical syndromes, glanders and melioidosis. The aim of this study was to establish a fast and reliable molecular method for identification and differentiation. Despite amotility, the gene of the filament forming flagellin (fliC) could be completely sequenced in two B. mallei strains. Only one mutation was identified discriminating between B. mallei and B. pseudomallei. A polymerase chain reaction-restriction fragment length polymorphism assay was designed making use of the absence of an Ava II recognition site in B. mallei. All seven B. mallei, 12 out of 15 B. pseudomallei and 36 closely related apathogenic Burkholderia thailandensis strains were identified correctly. However, in three B. pseudomallei strains a point mutation at gene position 798 (G to C) disrupted the Ava II site. Therefore, molecular systems based on the fliC sequence can be used for a reliable proof of strains of the three species but not for the differentiation of B. mallei and B. pseudomallei isolates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-695X.2002.tb00629.x
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  • 7
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    Parallel single-cell monitoring of receptor-triggered membrane translocation of a calcium-sensing protein module (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-09
    Description: Time courses of translocation of fluorescently conjugated proteins to the plasma membrane were simultaneously measured in thousands of individual rat basophilic leukemia cells. We found that the C2 domain---a calcium-sensing, lipid-binding protein module that is an essential regulator of protein kinase C and numerous other proteins---targeted proteins to the plasma membrane transiently if calcium was released from internal stores, and persistently in response to entry of extracellular calcium across the plasma membrane. The C2 domain translocation time courses of stimulated cells clustered into only two primary modes. Hence, the reversible recruitment of families of signaling proteins from one cellular compartment to another is a rapid bifurcation mechanism for inducing discrete states of cellular signaling networks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Teruel, Mary N -- Meyer, Tobias -- CA83229/CA/NCI NIH HHS/ -- GM062144/GM/NIGMS NIH HHS/ -- HG00057/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 8;295(5561):1910-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Pharmacology, Stanford University Medical School, 269 Campus Drive, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11884760" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins ; Calcium/*metabolism ; *Calcium Signaling ; Cell Membrane/*metabolism ; Cytosol/metabolism ; Fluorescence ; Fluorescent Dyes ; Isoenzymes/chemistry/*metabolism ; Kinetics ; Luminescent Proteins ; Platelet Activating Factor/pharmacology ; Protein Binding ; Protein Kinase C/chemistry/*metabolism ; Protein Structure, Tertiary ; *Protein Transport ; Rats ; Receptors, Cell Surface/*metabolism ; Recombinant Fusion Proteins/metabolism ; Software ; Thapsigargin/pharmacology ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Calling it something other than cloning (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, Eli -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):51-2; author reply 51-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12102093" target="_blank"〉PubMed〈/a〉
    Keywords: *Blastocyst ; *Cloning, Organism/legislation & jurisprudence ; Humans ; *Life ; Semantics ; *Stem Cells ; Terminology as Topic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
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    Murine leukemia induced by retroviral gene marking (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Zhixiong -- Dullmann, Jochen -- Schiedlmeier, Bernd -- Schmidt, Manfred -- von Kalle, Christof -- Meyer, Johann -- Forster, Martin -- Stocking, Carol -- Wahlers, Anke -- Frank, Oliver -- Ostertag, Wolfram -- Kuhlcke, Klaus -- Eckert, Hans-Georg -- Fehse, Boris -- Baum, Christopher -- New York, N.Y. -- Science. 2002 Apr 19;296(5567):497.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Heinrich-Pette-Institute, D-20251 Hamburg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964471" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow Cells/metabolism ; Bone Marrow Transplantation ; DNA-Binding Proteins/genetics/metabolism ; *Gene Transfer, Horizontal ; Genetic Therapy ; *Genetic Vectors ; Hematopoiesis, Extramedullary ; Leukemia, Monocytic, Acute/*etiology ; Mice ; Mice, Inbred C57BL ; Preleukemia/*etiology ; *Proto-Oncogenes ; Receptor, Nerve Growth Factor ; Receptor, trkA/genetics/metabolism ; Receptors, Nerve Growth Factor/*genetics/metabolism ; Retroviridae/*genetics ; Transcription Factors/genetics ; Transgenes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Isolation and characterisation of the phospholipase B gene ofCryptococcus neoformansvar.gattii (2002)
    Oxford University Press
    Details
    Publication Date: 2002-12-01
    Print ISSN: 1567-1356
    Electronic ISSN: 1567-1364
    Topics: Biology
    Published by Oxford University Press on behalf of Federation of European Microbiological Societies.
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