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  • 1
    Electronic Resource
    Electronic Resource
    A histone H3 lysine 27 demethylase regulates animal posterior development (2007)
    [s.l.] : Nature Publishing Group
    Nature 449 (2007), S. 689-694 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The recent discovery of a large number of histone demethylases suggests a central role for these enzymes in regulating histone methylation dynamics. Histone H3K27 trimethylation (H3K27me3) has been linked to polycomb-group-protein-mediated suppression of Hox genes and animal body patterning, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature06192
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  • 2
    Electronic Resource
    Electronic Resource
    Seasonal dynamics of the planktonic community in Lake Druzhby, Princess Elizabeth Land, Eastern Antarctica (1996)
    Oxford BSL : Blackwell Science Ltd
    Freshwater biology 35 (1996), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. The temporal abundance and composition of the plankton of a continental Antarctic lake (Lake Druzhby) situated in the Vestfold Hills, Eastern Antarctica was investigated from December 1992 to December 1993. The system was dominated by microbial plankton (cyanobacteria, heterotrophic bacteria and protozoans) with few metazoans.2. Chlorophyll a concentrations ranged between 0.15 and 1.1 μg l–1 and showed highest levels from late winter to spring.3. Heterotrophic bacteria ranged between 75 and 250 × 106 l–1 with highest abundances in late winter/spring. Mean bacterial biovolumes showed considerable seasonal variation (0.05–0.31 μm3). Largest biovolumes occurred in summer and this was the time of highest community biomass.4. Heterotrophic nanoflagellates reached highest abundances in late summer (maximum 14 × 105 l–1). Their mean biovolume also exhibited considerable seasonal variation, ranging between 1.77 and 27.0 μm3, with largest size resulting in community biomass peaking in early summer. Ciliated protozoa were poorly represented and sparse. Phototrophic nanoflagellates were sparse in this lake; instead the phototrophic plankton was dominated by a small rod-shaped cyanobacterium which constituted the largest carbon pool in the system. It was common throughout the year, its biomass peaking in autumn. Its presence is discussed in relation to lake morphometry and light climate.5. Heterotrophic flagellate grazing rates ranged from 6.78 bacteria cell–1 day–1 at 2 °C to 11.8 bacteria cell–1 day–1 at 4 °C. They remove around 2% of the bacterial carbon pool per day during summer and winter.6. Nutrient levels were low and recorded in pulses. Dissolved and particulate organic carbon were also low, usually less than 3 mg l–1 and 600 μg l–1, respectively. The carbon pools were derived from autochthonous sources. This lake system is driven by bottom-up forces and lacks top-down control, which fits into the picture currently seen for continental Antarctic lakes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2427.1996.00480.x
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  • 3
    Electronic Resource
    Electronic Resource
    Chemistry in the kitchen: the chemistry of flesh foods IV (1995)
    Bingley : Emerald
    Nutrition & food science 95 (1995), S. 32-34 
    Details
    ISSN: 0034-6659
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In the UK poultrymeat has 46 per cent volume share of the primarymeat market. In particular, chicken has seen dramatic growth over 40years with 525 million broilers being consumed in 1993. Examines theissues relating to poultrymeat in terms of market status and growth,nutrition, muscle fibre characteristics and quality issues such ascolour, texture, flavour and safety.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00346659510103656
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  • 4
    Electronic Resource
    Electronic Resource
    Chemistry in the kitchen: the chemistry of flesh foods III (1995)
    Bingley : Emerald
    Nutrition & food science 95 (1995), S. 28-33 
    Details
    ISSN: 0034-6659
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: When self selecting meat, consumers rank the colour of fresh meatas being the most important criterion in their purchase decision becauseit indicates freshness, while the most desirable eating quality of meat,after texture, is the cooked flavour. Details the well-understoodchemistry in relation to meat colour and reviews the lesswell-understood chemistry of cooked meat flavour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00346659510088690
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  • 5
    Electronic Resource
    Electronic Resource
    Chemistry in the kitchen: the chemistry of flesh foods II (1995)
    Bingley : Emerald
    Nutrition & food science 95 (1995), S. 21-26 
    Details
    ISSN: 0034-6659
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The meat quality attribute of texture is ranked as the mostimportant by consumers. Details the mechanism of the major causes ofmeat toughness. Examines pre-slaughter, post-slaughter and processingfactors that influence the texture of meat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00346659510078277
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  • 6
    Electronic Resource
    Electronic Resource
    Chemistry in the kitchen: the chemistry of flesh foods I (1995)
    Bingley : Emerald
    Nutrition & food science 95 (1995), S. 31-35 
    Details
    ISSN: 0034-6659
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An understanding of muscle structure and the physiology of postmortem change occurring in meat are fundamental to the understandingof meat quality. This first article in a series of four examines thestructure of muscle, including the differing types of muscle fibres andthe general microstructure. Discusses the organization of muscle fibresin a muscle system along with the metabolites available to the musclefibre. Gives details relating to how the muscle fibres maintainhomeostasis by utilizing these metabolites after humane slaughter. Inaddition, covers factors influencing the rate of rigor mortis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00346659510076558
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  • 7
    Electronic Resource
    Electronic Resource
    Chemistry in the kitchen: fish and fish products (1996)
    Bingley : Emerald
    Nutrition & food science 96 (1996), S. 41-43 
    Details
    ISSN: 0034-6659
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Reviews the characteristics of differing fish types along with their structure, composition and quality. Examines organoleptic changes associated with microbial, oxidative and enzymic spoilage during post-harvest storage of fish.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00346659610105897
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  • 8
    Electronic Resource
    Electronic Resource
    Clay diagenesis in recent marine fecal pellets (1982)
    Springer
    Geo-marine letters 2 (1982), S. 83-88 
    Details
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Fecal pellets are ubiquitous in sediment collected from deep ocean ridge, continental shelf and fjord-type estuarine environments off the Canadian West Coast. Fecal pellets of the immature diagenetic stage are composed generally of the same mineral suite as the bulk sea-bottom sample; except that degraded biotite and/or illite has absorbed Fe and K to regrade into glauconite. These fecal pellets (〈10 years old) contain 10 to 15% glauconite. Highly evolved monomineralic fecal pellets (e.g. glauconite, smectite) of such modern age show that diagenetic minerals commonly associated with burial can be produced by sediment-organism interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462805
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  • 9
    Electronic Resource
    Electronic Resource
    Farnesylation is involved in meristem organization in Arabidopsis (2000)
    Springer
    Planta 211 (2000), S. 182-190 
    Details
    ISSN: 1432-2048
    Keywords: Key words: Arabidopsis (farnesylation ; mutant) ; Farnesylation ; Lipid modification ; Meristem development ; Mutant (Arabidopsis ; farnesylation) ; Photoperiod
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract.  Although studies in plant and animal cell culture systems indicate farnesylation is required for normal cell cycle progression, how this lipid modification of select proteins translates into whole-organism developmental decisions involving cell proliferation or differentiation is largely unknown. The era1 mutant of the higher plant Arabidopsis thaliana (L.) Heynh. offers a unique opportunity to understand the role farnesylation may play in regulating various processes during the development of a multicellular organism. Loss of farnesylation affects many aspects of Arabidopsis growth and development. In particular, apical and axillary meristem development is altered and these phenotypes are contingent on the growth conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004250000283
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  • 10
    Electronic Resource
    Electronic Resource
    Temporal patterns of primary production in a large ultra-oligotrophic Antarctic freshwater lake (1997)
    Springer
    Polar biology 18 (1997), S. 363-370 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A large ultra-oligotrophic Antarctic freshwater lake, Crooked Lake, was investigated between January 1993 and November 1993. The water column supported a small phytoplankton community limited by temperature, nutrient availability and, seasonally, by low photosynthetically active radiation. Chlorophyll a concentrations were consistently low (〈1 g l−1) and showed no obvious seasonal patterns. Production rates were low, ranging from non-detectable to 0.56 g C l−1 h−1, with highest rates generally occurring towards the end of the austral winter and in spring. The pattern of carbon fixation indicated that the phytoplankton was adapted to low light levels. Chlorophyll a specific photosynthetic rates (assimilation numbers) ranged from non-detectable to 1.27 gC (g chlorophyll a)−1 h−1. Partitioning of photosynthetic products revealed carbon incorporation principally into storage products such as lipids at high light fluxes with increasing protein synthesis at depth. With little allochthonous input the data suggest that lake dynamics in this Antarctic system are driven by phytoplankton activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003000050201
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