Refine
Year of publication
Document Type
- Article (98)
- Conference Proceeding (8)
- Part of a Book (1)
Keywords
- MINLP (3)
- Experimental validation (2)
- Process engineering (2)
- Cooling system (1)
- Engineering optimisation (1)
- Engineering optimization (1)
- Industrial optimisation (1)
- MILP (1)
- Mixed-integer nonlinear problem (1)
- Mixed-integer nonlinear programming (1)
- Mixed-integer programming (1)
- Multi-criteria optimization (1)
- Network design (1)
- Optimization (1)
- Paper recycling (1)
- Pumping systems (1)
- Resilience (1)
- Technical Operations Research (1)
- Validation (1)
- Water distribution system (1)
Institute
- Fachbereich Medizintechnik und Technomathematik (95)
- Fachbereich Elektrotechnik und Informationstechnik (6)
- Fachbereich Bauingenieurwesen (2)
- Fachbereich Energietechnik (2)
- Fachbereich Chemie und Biotechnologie (1)
- Fachbereich Maschinenbau und Mechatronik (1)
- INB - Institut für Nano- und Biotechnologien (1)
- IfB - Institut für Bioengineering (1)
The interplay of albumin (BSA) and lysozyme (LYZ) adsorbed simultaneously on titanium was analyzed by gel electrophoresis and BCA assay. It was found that BSA and lysozyme adsorb cooperatively. Additionally, the isoelectric point of the respective protein influences the adsorption. Also, the enzymatic activity of lysozyme and amylase (AMY) in mixtures with BSA was considered with respect to a possible influence of protein-protein interaction on enzyme activity. Indeed, an increase of lysozyme activity in the presence of BSA could be observed. In contrast, BSA does not influence the activity of amylase.
The chemical industry is one of the most important industrial sectors in Germany in terms of manufacturing revenue. While thermodynamic boundary conditions often restrict the scope for reducing the energy consumption of core processes, secondary processes such as cooling offer scope for energy optimisation. In this contribution, we therefore model and optimise an existing cooling system. The technical boundary conditions of the model are provided by the operators, the German chemical company BASF SE. In order to systematically evaluate different degrees of freedom in topology and operation, we formulate and solve a Mixed-Integer Nonlinear Program (MINLP), and compare our optimisation results with the existing system.
High spin states in ¹³⁶ Ce
(1975)
High spin states in ¹⁹¹ Au
(1975)
High spin states in ¹⁹¹ Au
(1975)
High spin states in ¹³⁶ Ce
(1975)
In-beam study of ¹⁴⁴ Gd
(1978)
Side bands in ¹⁷² Hf
(1977)
In-beam study of ¹⁴⁴ Gd
(1977)
New isomeric state in ¹⁴⁵ Eu
(1979)
In-beam study of ¹⁴⁵ Gd
(1979)
High-spin isomer in ¹³⁷ Ce
(1978)
In-beam study of ¹⁴⁴ Gd
(1978)
Side-bands in ¹⁸⁰ Os
(1981)
High spin states in ¹⁸⁸ Au
(1982)
A network of brain areas is expected to be involved in supporting the motion aftereffect. The most active components of this network were determined by means of an fMRI study of nine subjects exposed to a visual stimulus of moving bars producing the effect. Across the subjects, common areas were identified during various stages of the effect, as well as networks of areas specific to a single stage. In addition to the well-known motion-sensitive area MT the prefrontal brain areas BA44 and 47 and the cingulate gyrus, as well as posterior sites such as BA37 and BA40, were important components during the period of the motion aftereffect experience. They appear to be involved in control circuitry for selecting which of a number of processing styles is appropriate. The experimental fMRI results of the activation levels and their time courses for the various areas are explored. Correlation analysis shows that there are effectively two separate and weakly coupled networks involved in the total process. Implications of the results for awareness of the effect itself are briefly considered in the final discussion.
As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.