Filtern
Dokumenttyp
- Posterpräsentation (2)
- Zeitschriftenartikel (1)
- Buchkapitel (1)
- Vortrag (1)
Schlagworte
- Datenbank GEFAHRGUT (2)
- Informationssystem (2)
- ADR 2019 (1)
- Asymmetrical flow field-flow fractionation (AF-FFF) (1)
- Baker-Williams fractionation (1)
- Chemical composition distribution (CCD) (1)
- Circular asymmetrical flow field-flow eluation (CAFFFE) (1)
- Continuous polymer fractionation (CPF) (1)
- Crystallization analysis fractionation (CRYSTAF) (1)
- Crystallizationdissolution fractionation (CDF) (1)
Organisationseinheit der BAM
Eingeladener Vortrag
- nein (1)
Life Cycle Assessment (LCA) and Social Life Cycle Assessment (SLCA) are applied in evaluating possible social and environmental impacts of the state-of-art welding technologies, such as Manual Metal Arc Welding (MMAW), Manual Gas Metal Arc Welding (GMAW), Automatic GMAW and Automatic Laser-Arc Hybrid Welding (LAHW). The LCA results indicate that for 1 meter weld seam, MMAW consumes the largest amount of resources (like filler material and coating on electrodes) and energy, which contributes to comparatively higher environmental impacts in global warming potential, acidification, photochemical ozone creation potential and eutrophication than other chosen processes. With regard to social aspects, the health issues and fair salary are under survey to compare the relative potential risk on human health caused by fumes in different welding technologies, and to indicate the sufficiency of current salary of welders in Germany. The results reflect that the wage status of welders is still fair and sufficient. The manual processes bring much higher potential risk of welders health than the automatic processes, especially MMAW.
Fractionation
(2012)
The enormous diversity of polymers with respect to molecular weight, molecular architecture, and – in the case of copolymers – also the content and arrangement of dissimilar monomers requires well-targeted methods for the separation of the different species that are contained in a given sample. This chapter presents the most abundant fractionation procedures, which are either based on thermodynamic driving forces (like in the case of liquid–liquid phase separation) or on kinetic effects (as with field-flow fractionation).