Re-Discovering an Older Sovereignty

Review of Sovereignty: Moral and Historical Perspectives by James Turner Johnson. Washington DC: Georgetown University Press, 2014

Too Subtle to Satisfy Many: Was Grotius\u27s Teleology of Punishment Predestined to Fail?

Most readers believe Grotius failed to refute Socinus in De satisfactione. This paper argues that Grotius\u27s failure was one of reception rather than argument. It is possible to read De satisfactione as Grotius adverted: a genuine (if subtle) concept of satisfaction, and a defence of the (small-c) catholic faith. Grotius does reject a necessitarian identical satisfaction, in which a repayment is equal to a debt, but like Aquinas, he embraces a teleological equivalent satisfaction, in which a punishment fits a crime. Yet Grotius’s catholic theory was predestined not to persuade a wartime Continental audience whose centre had not held and which sought definitive distinctions from the Roman church. His attempt to forge a broad middle way would succeed only later in Britain

Beyond Strict Justice: Hugo Grotius on Punishment and Natural Right(s)

Hugo Grotius is often seen as reducing justice to the systematic protection of individual rights. However, this reading struggles to account for the surprisingly robust place he accords to punishment. An offender cannot plausibly claim punishment as a right, and the right to punish gives little direction about how best to carry out punishment. These difficulties point toward Grotius\u27s little-noticed bifurcation of justice into “expletive” and “attributive” categories. While expletive (or “strict”) justice provides a grounding for the right to punish, its subsequent exercise must be governed by attributive justice. This higher justice considers persons and situations; requires imagination and prudential judgment; looks to the future; aims for the common good; acknowledges the importance of virtue; and never claims perfect solutions. Thus, Grotius\u27s supposedly modern understanding of natural rights is best understood within an account of his specifically political thought—one that acknowledges an overarching framework of classical natural Right

SURFACE TREATMENT FOR THE MITIGATION OF WHEY PROTEIN FOULING

Heat transfer fouling experiments were carried out in a temperature controlled stirred vessel using aqueous solutions of whey protein concentrate in the concentration range of 3 to 3.5 wt-% at a bulk temperature of 50 °C and pH of 6. Heat transfer data were obtained from thermocouples embedded in an immersed electrical heating rod with various metal plates attached with-and-without surface treatments. Measurements included solution temperature, heating element surface temperature, and heat duty. Results are presented as fouling resistance versus time for aluminum, copper, stainless steel, electro-polished stainless steel, and surfaces coated with DLC and doped with Si , SiO, as well as DLC-coating of an electro-polished stainless steel. Reducing surface roughness was found to mitigate fouling but the combination of both surface treatments, DLC coatings, and electro-polishing gave the best performance. The experimental results demonstrate the potential and value for reducing the adhesive behavior of whey protein fouling layers using modified surfaces. Also a comparison of these results with those for crystallization fouling show the same effects of the surface modification on nucleation and crystal growth. Of particular importance is the influence on the cleaning performance where the main potential can be expected

EXTENDING THE INDUCTION PERIOD OF CRYSTALLIZATION FOULING THROUGH SURFACE COATING

To minimize the negative effects of scale formation in heat exchangers, new anti-fouling strategies are focusing on the modification of heat transfer surfaces. These modifications should lead to tailored made surfaces for different technical applications. Aim of this surface modification is the extension of the induction period to minimize the negative effects of fouling and maximize the endurance of the heat exchanger. To achieve such, different surface coatings on stainless steel were investigated in respect of fouling tendency. The effect of flow velocity respectively Reynolds number on the induction time of CaSO4 crystallization fouling were tested in different test units. Diamond like carbon coatings are extending the induction time in every measured flow velocity. At higher Reynolds numbers, the effect of different surface crystallization due to energetic modification is reduced because of the dominating effect of the low adhesive surface. Thus the induction time can be extended by the factor of 2 for low fluid velocities (DLC or SICON®) and more than 20 for higher Reynolds numbers (DLC and SICON®). The combination of limited nucleation spots due to electro-chemical treatment of the substrate before coating can be a tailored made surface with maximum induction time for crystallization fouling

INFLUENCE OF DIFFERENT SURFACE MATERIALS ON NUCLEATION AND CRYSTAL GROWTH IN HEAT EXCHANGERS

The influence of different materials on the fouling tendency in saline calcium sulfate solution was investigated. The effects of the untreated material on the crystallization process have been studied experimentally in the micro- and macroscopic scale. The crystallization in the induction period was visualized with SEM and AFM to locate preferred nucleation spots and to visualize the crystal growth. The different materials are showing different crystal growth behavior (number and size of the crystals). These results are corresponding with the macroscopic fouling results with limited shear stress. Also different roughness values on stainless steel have been studied with respect to fouling tendency. The induction time can be extended with smoother surfaces due to the limitation of nucleation spots. With higher fluid velocities, the adhesion of the forming crystals on the heat transfer surface dominates the length of the induction time