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  • Articles: DFG German National Licenses  (4)
  • 1995-1999  (4)
  • 1950-1954
  • 1920-1924
  • riverine litter  (3)
  • Channel gating  (1)
Source
  • Articles: DFG German National Licenses  (4)
Material
Years
  • 1995-1999  (4)
  • 1950-1954
  • 1920-1924
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    The gating of the sheep skeletal sarcoplasmic reticulum Ca2+-release channel is regulated by luminal Ca2+ (1995)
    Springer
    The journal of membrane biology 146 (1995), S. 133-144 
    Details
    ISSN: 1432-1424
    Keywords: Sarcoplasmic reticulum ; Skeletal muscle ; Calcium-release channel ; Ryanodine receptor ; Channel gating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The effects of changes in luminal [Ca2+] have been investigated in sheep skeletal sarcoplasmic reticulum (SR) Ca2+-release channels after activation of the channels by different ligands from the cytosolic side of the channel. Native heavy SR membrane vesicles were incorporated into planar phospholipid bilayers under voltage-clamp conditions. Experiments were carried out in symmetrical 250 mm Cs+. Lifetime analysis indicates that channels activated solely by cytosolic Ca2+ exhibit at least two open and five closed states. The open events are very brief and are close to the minimum resolvable duration. When channels are activated solely by cytosolic Ca2+, luminal Ca2+ does not appear to exert any regulatory effect. The P 0 and duration of the open and closed lifetimes are unchanged. However, if channels are activated by ATP alone or by ATP plus cytosolic Ca2+, increases in luminal [Ca2+] produce marked increases in P 0 and in the duration of the open lifetimes. Our results demonstrate that maximum activation of the skeletal SR Ca2+-release channel by ATP cannot be obtained in the absence of millimolar luminal [Ca2+].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238004
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    MOVEMENT PATTERNS OF RIVERINE LITTER (1997)
    Springer
    Water, air & soil pollution 98 (1997), S. 119-139 
    Details
    ISSN: 1573-2932
    Keywords: litter clearance and accumulation ; riverine litter ; time of travel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Aspects of litter movement were looked at in a variety of ways. River bank clearances provided valuable information on litter accumulation and movement, showing a distinctive correlation between flood events and litter movement. Introduction of litter outside of channel deposition (diffuse sources) were limited in the study area in South Wales, UK. A rise in litter deposition occurred for some time after flood events, with the main accumulation occurring in the mid-bank zone. As only some litter types have an increased input during flood events e.g. sewage-derived material from combined sewer outfalls (CSO), accumulation of other litter types, e.g. plastic sheeting could be due to their distribution throughout the catchment. A positive correlation between litter stranding and vegetation was found. During high flows, (75.59 cumecs) litter is removed from sites with little restraining vegetation and deposited where stranding potential is high. Smaller items such as feminine hygiene products were more susceptible to stranding than larger plastic sheeting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026424715108
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Movement patterns of riverine litter (1997)
    Springer
    Water, air & soil pollution 98 (1997), S. 119-139 
    Details
    ISSN: 1573-2932
    Keywords: litter clearance and accumulation ; riverine litter ; time of travel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Aspects of litter movement were looked at in a variety of ways. River bank clearances provided valuable information on litter accumulation and movement, showing a distinctive correlation between flood events and litter movement. Introduction of litter outside of channel deposition (diffuse sources) were limited in the study area in South Wales, UK. A rise in litter deposition occurred for some time after flood events, with the main accumulation occurring in the mid-bank zone. As only some litter types have an increased input during flood events e.g. sewage-derived material from combined sewer outfalls (CSO), accumulation of other litter types, e.g. plastic sheeting could be due to their distribution throughout the catchment. A positive correlation between litter stranding and vegetation was found. During high flows, (75.59 cumecs) litter is removed from sites with little restraining vegetation and deposited where stranding potential is high. Smaller items such as feminine hygiene products were more susceptible to stranding than larger plastic sheeting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02128653
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Sources of Riverine Litter: The River Taff, South Wales, UK (1999)
    Springer
    Water, air & soil pollution 112 (1999), S. 197-216 
    Details
    ISSN: 1573-2932
    Keywords: fly tipping ; riverine litter ; sewage ; sources
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Riverine litter occupies a spatial and temporal position in any systematic analysis of river systems and is a problem that is increasing in scale. Quantifiable source factors of litter in the river Taff, South Wales, UK, system were found to be mainly two – sewage inputs through combined sewer overflows (CSO) and fly tipping. The greatest inputs of sewage derived solids were introduced to the river by malfunctioning CSO, the most numerous single component being sanitary towels. Whilst sewage-derived material constituted approximately 23% of all items on the river Taff, large quantities of waste, especially plastic sheeting, originated from fly tipping sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005000724803
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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