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  • 1
    Digitale Medien
    Digitale Medien
    Testis and sperm morphology in two deep-water squaloid sharks, Centroscymnus coelolepis and Centrophorus squamosus (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 57 (2000), S. 0 
    Details
    ISSN: 1095-8649
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The organization of spermatocysts in the testes of 77 Centroscymnus coelolepis and 53 Centrophorus squamosus is of the diametric type. Unlike other elasmobranchs with this type of gonad, an epigonal organ was not observed. Two classes of adults (C and D stages) were distinguished according to testis shape and clasper development. D stage specimens differed from C stage as they had mated at least once. The reproductive product of male C. coelolepis seems to be unique among sharks; spermatozeugmata consist of spermatozoa aggregates and do not display clumped sperm as in C. squamosus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1095-8649.2000.tb02233.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Emulsifying Properties of Whey Protein-Carboxymethylcellulose Complexes (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: : Proteins/polysaccharides complexes could improve emulsifying properties of proteins by thickening the layer at the interface of the oil droplets. Emulsifying properties of whey protein-carboxymethylcellulose complexes (WPI/CMC) were compared with those of a whey protein isolate (WPI). Ingredients were incorporated into oilinwater emulsions with various protein and oil contents. Visual observations, protein load, protein distribution and rheological measurements were used to evaluate emulsion stability. Protein load up to 26.1 and 48.9 mg protein/g oil were obtained for WPI and WPI/CMC emulsions, respectively. The higher protein load of WPI/CMC emulsions and visual observations indicated that WPI/CMC complexes had greater emulsifying properties against coalescence than whey proteins. However, complexes enhanced flocculation of oil droplets.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb11369.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Headspace Volatiles and Physical Characteristics of Vacuum-microwave, Air, and Freeze-dried Oregano (Lippia berlandieri Schauer) (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: : Mexican oregano (Lippia berlandieri Schauer) was dried using a freeze drier, conventional hot air drier, and a recently developed vacuum-microwave drier. The effect of the drying method on the relative content of major flavor volatiles, rehydration rate, color, and structural integrity of the herb was evaluated. Dynamic headspace analysis of volatiles present in fresh or dried oregano revealed that β-myrcene, α-terpinene, γ-terpinene, p-cymene, and thymol were the major volatile compounds of the plant. The level of thymol in vacuum-microwave-dried oregano was found to be comparable to that of fresh or freeze-dried samples (1.3 times the thymol concentration of air-dried). Air-dried samples of oregano were darker, were less green, and exhibited lower rehydration rates than those prepared by vacuum-microwave or freeze-drying. Structures of vacuum-microwave and freeze-dried oregano appeared to be quite similar as observed on electron micrographs.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.2000.tb09394.x
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  • 4
    Digitale Medien
    Digitale Medien
    Further Characterisation of the 91500 Zircon Crystal (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 28 (2004), S. 0 
    Details
    ISSN: 1751-908X
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie
    Notizen: This paper reports the results from a second characterisation of the 91500 zircon, including data from electron probe microanalysis, laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS), secondary ion mass spectrometry (SIMS) and laser fluorination analyses. The focus of this initiative was to establish the suitability of this large single zircon crystal for calibrating in situ analyses of the rare earth elements and oxygen isotopes, as well as to provide working values for key geochemical systems. In addition to extensive testing of the chemical and structural homogeneity of this sample, the occurrence of banding in 91500 in both backscattered electron and cathodoluminescence images is described in detail. Blind intercomparison data reported by both LA-ICP-MS and SIMS laboratories indicate that only small systematic differences exist between the data sets provided by these two techniques. Furthermore, the use of NIST SRM 610 glass as the calibrant for SIMS analyses was found to introduce little or no systematic error into the results for zircon. Based on both laser fluorination and SIMS data, zircon 91500 seems to be very well suited for calibrating in situ oxygen isotopic analyses.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1751-908X.2004.tb01041.x
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  • 5
    Digitale Medien
    Digitale Medien
    Involvement of cyclic AMP in the production of the acid protease Acp1 by Sclerotinia sclerotiorum (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 237 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: The acid protease Acp1 is produced by Sclerotinia sclerotiorum during plant infection. We explored the mechanism involved in the triggering of that production and found that cyclic AMP played a positive role. Acp1 could be produced in the sole presence of exogenous cyclic AMP. The use of molecules known to increase or decrease the intracellular cyclic AMP levels confirmed the impact of this nucleotide on the protease production and suggested its endogenous site of action. Further pharmacological studies showed the specific effect of cyclic AMP on Acp1 production and suggested that protein kinase A would be its likely target. Together, these results provide the first indication that the production of a pathogenesis-related fungal protease could depend on a cyclic AMP/Protein kinase A signalling pathway.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1574-6968.2004.tb09700.x
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Protein phosphorylation pathways involved during lipopolysaccharide-induced expression of CD14 in mouse bone marrow granulocytes (2000)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS immunology and medical microbiology 28 (2000), S. 0 
    Details
    ISSN: 1574-695X
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Medizin
    Notizen: Lipopolysaccharide (LPS) of Gram-negative bacteria interacts with a CD14-independent receptor of mouse bone marrow granulocytes (BMC), and triggers in these cells the expression of CD14, an inducible type of LPS receptor (iLpsR). This particular response of BMC to LPS required the activation of protein tyrosine kinase and p38 MAP kinase. The inhibition of the LPS effect by the MEK inhibitor PD-98059 suggested that the ERK pathway was also involved. Unexpectedly, protein kinase C, myosin light chain kinase, cAMP-, cGMP-, and Ca2+/calmodulin-dependent kinases, as well as ecto-protein kinases, were not required for iLpsR expression. However, other yet unidentified serine/threonine protein kinase(s) were implied since the BMC response to LPS was markedly reduced after exposure to three inhibitors of such kinases (K-252a, H-7, and KT-5823). The atypical kinase requirements observed in this study may be due either to a novel signaling LPS receptor complex present in BMC, or to the particular events involved in CD14 biosynthesis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1574-695X.2000.tb01484.x
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  • 7
    Digitale Medien
    Digitale Medien
    Headspace Volatiles of Sockeye and Pink Salmon as Affected by Retort Process (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    Details
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Sockeye and pink salmon were canned according to constant and variable temperature retort processes. A total of 102 volatile constituents were detected by gas chromatography-mass spectrometry. Based on principal component analysis (PRIN) applied to the different classes of volatiles, PRIN1 explained 72.2% of variation and was significant (P 〈 0.0001) for species differentiation. PRIN2 and PRIN4 extracted smaller variations (14.5% and 3.1%, respectively) but were significant (P 〈 0.05 and P 〈 0.01, respectively) for differences in retort regimes. However, sensory panelists did not find flavor differences between retort modes. Olfactometry revealed that aldehydes, sulfurs, and ketones constituted the major volatile classes of aroma-impact constituents in canned sockeye salmon.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2621.2000.tb15952.x
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