Optical temperature switch based on microstructured fibre filled with different chemical mixtures

2012 ◽  
Author(s):  
P. Marc ◽  
P. Piliszek ◽  
M. Murawski ◽  
M. Szymanski ◽  
T. Nasilowski ◽  
...  
Keyword(s):  
Chemical Mixtures ◽  
Microstructured Fibre ◽  
Temperature Switch

scholarly journals Novel zinc-binding center and a temperature switch in the Bacillus stearothermophilus L1 lipase.

2002 ◽  
Vol 277 (28) ◽  
pp. 25840
Author(s):  
Seong-Tae Jeong ◽  
Hyung-Kwoun Kim ◽  
Seung-Jun Kim ◽  
Seung-Wook Chi ◽  
Jae-Gu Pan ◽  
...  
Keyword(s):  
Bacillus Stearothermophilus ◽  
Zinc Binding ◽  
Binding Center ◽  
Temperature Switch

scholarly journals Mixtures of chemicals are important drivers of impacts on ecological status in European surface waters

2019 ◽  
Vol 31 (1) ◽  
Author(s):  
Leo Posthuma ◽  
Werner Brack ◽  
Jos van Gils ◽  
Andreas Focks ◽  
Christin Müller ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
Surface Waters ◽  
Water Quality Management ◽  
Ecological Status ◽  
Ecological Impacts ◽  
Chemical Pollution ◽  
Individual Species ◽  
Integrated Analysis ◽  
Chemical Mixtures

Abstract The ecological status of European surface waters may be affected by multiple stressors including exposure to chemical mixtures. Currently, two different approaches are used separately to inform water quality management: the diagnosis of the deterioration of aquatic ecosystems caused by nutrient loads and habitat quality, and assessment of chemical pollution based on a small set of chemicals. As integrated assessments would improve the basis for sound water quality management, it is recommended to apply a holistic approach to integrated water quality status assessment and management. This allows for estimating the relative contributions of exposure to mixtures of the chemicals present and of other stressors to impaired ecological status of European water bodies. Improved component- and effect-based methods for chemicals are available to support this. By applying those methods, it was shown that a holistic diagnostic approach is feasible, and that chemical pollution acts as a limiting factor for the ecological status of European surface waters. In a case study on Dutch surface waters, the impact on ecological status could be traced back to chemical pollution affecting individual species. The results are also useful as calibration of the outcomes of component-based mixture assessment (risk quotients or mixture toxic pressures) on ecological impacts. These novel findings provide a basis for a causal and integrated analysis of water quality and improved methods for the identification of the most important stressor groups, including chemical mixtures, to support integrated knowledge-guided management decisions on water quality.

Integrated Approaches for the Analysis of Toxicologic Interactions of Chemical Mixtures

1997 ◽  
Vol 27 (2) ◽  
pp. 175-197 ◽  
Author(s):  
Hisham A. El-Masri ◽  
Kenneth F. Reardon ◽  
Raymond S. H. Yang
Keyword(s):  
Chemical Mixtures ◽  
Integrated Approaches
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