Neuregelung der Videoüberwachung in Rheinland-Pfalz

Mit dem nunmehr verabschiedeten Gesetzentwurf der Fraktionen der SPD und CDU (LT-Drs. 15/5135) zur ?nderung des Landesdatenschutzgesetzes des Landes Rheinland-Pfalz (LDSG) werden verschiedene Rechtsentwicklungen auf Bundesebene nachgezeichnet. So werden etwa durch die Neufassung des § 4 Abs. 2 LDSG die Anforderungen der Auftragsdatenverarbeitung an die parallelen Bestimmungen des BDSG angepasst. Mit der Neuregelung von § 18a LDSG übertr?gt der Landesgesetzgeber die Regelung des § 42a BDSG auf „Datenpannen“ innerhalb der ?ffentlichen Verwaltung und geht insoweit deutlich über das Bundesrecht zum Schutz der Betroffenen hinaus. Wichtig ist auch die ?nderung der Rechtsstellung des Datenschutzbeauftragten in § 23 Abs. 1 S. 2 LDSG. Das Land reagiert damit auf das Urteil des EuGH vom 9. M?rz 2010 zur Unabh?ngigkeit der Datenschutz-Aufsichtsbeh?rden und zieht daraus Folgerungen für die Rechtsstellung des unabh?ngigen Datenschutzbeauftragten. Im Mittelpunkt dieser Untersuchung steht jedoch die Neuregelung der Videoüberwachung in Rheinland-Pfalz.     

Unpromoted and Mn‐Promoted Cobalt Catalyst Supported on Carbon Nanotubes for Fischer‐Tropsch Synthesis

Langmuir‐Hinselwood (LH) and power rate equations were applied to describe the kinetics of the Fischer‐Tropsch reaction on cobalt catalysts and manganese‐doped cobalt catalysts supported on carbon nanotubes (CNTs). LH‐based kinetics characterize the activity behavior of the unpromoted Co/CNT system satisfactorily, but fail with respect to the manganese‐promoted Co/CNT catalyst. An alternative LH equation is able to fit the experimental data, but the fitting parameters are out of the range of usual values and underrate the activity at ambient pressure regardless of manganese promotion. Application of power law rate expressions results in satisfying characterization of the kinetics in the whole CO pressure range in the promoted case and within a defined range of CO pressure in the unpromoted case.     

Three strategies to stabilise nearly monodispersed silver nanoparticles in aqueous solution

ABSTRACT: Silver nanoparticles are extensively used due to their chemical and physical properties and promising applications in areas such as medicine and electronics. Controlled synthesis of silver nanoparticles remains a major challenge due to the difficulty in producing long-term stable particles of the same size and shape in aqueous solution. To address this problem, we examine three strategies to stabilise aqueous solutions of 15 nm citrate-reduced silver nanoparticles using organic polymeric capping, bimetallic core-shell and bimetallic alloying. Our results show that these strategies drastically improve nanoparticle stability by distinct mechanisms. Additionally, we report a new role of polymer functionalisation in preventing further uncontrolled nanoparticle growth. For bimetallic nanoparticles, we attribute the presence of a higher valence metal on the surface of the nanoparticle as one of the key factors for improving their long-term stability. Stable silver-based nanoparticles, free of organic solvents, will have great potential for accelerating further environmental and nanotoxicity studies.PACS: 81.07.-b; 81.16.Be; 82.70.Dd.     

Redox-active liquid-crystalline ionomers: 1. Synthesis and rheology

Liquid-crystalline (LC) copolymers with redox-active groups were prepared by copolymerization of mesogenic and ferrocene-containing monomers (up to 10%). In these copolymers the ferrocene groups can be oxidized reversibly to prepare ionomers, while retaining the LC phase. It is thus possible to vary the amount of ionic groups in the ionomers by a redox reaction. The oxidized (charged) polymers show a strong excess X-ray scattering at small angles. This is typical for ionomers and is assigned to the scattering of ionic aggregates. Dynamic mechanical measurements show that these aggregates are effective as crosslinking points. Thus an oxidation-reduction reaction can be used to transfer an uncrosslinked polymer (reduced ferrocene groups, uncharged) reversibly into an oxidized polymer that acts like a weakly crosslinked gel.     

Tempeh: A semicentennial review on its health benefits,fermentation, safety,processing, sustainability,and affordability

Tempeh is a fermented food made of mainly soybeans and is a nutritious, affordable, and sustainable functional source of protein. Globally, tempeh is a widely accepted fermented product. Although there is a growing body of literature on tempeh, most research has focused on unfermented soybeans, thus the impact of tempeh fermentation on biological properties of soybeans has been largely left scattered. The objective of this review is to summarize the literature of tempeh fermentation over the past 60 years. A search of articles on tempeh published from 1960 to 2020 was performed using the Cochrane Library, Web of Science, EBSCOhost FSTA database, and Google Scholar. References from identified articles were reviewed for additional sources. In total, 321 papers were selected for this review, of which 64 papers were related to the health benefits of tempeh. This review concluded that sufficient evidence exists in the literature supporting tempeh fermentation as a low-cost, health-promoting, and sustainable food processing technology to produce protein-rich foods using various beans, legumes, and grains. This comprehensive review suggests further studies are needed on tempeh fermentation and its impact on human health; research and standardization of nonsoy tempeh; assessment of food safety-improving modification in tempeh production system; and initiatives supporting the sourcing of local ingredients in tempeh production.     

Applying Topological and Economical Principles in Catalyst Design: New Alumina–Cobalt Core–Shell Catalysts

Designing new and effective catalysts may be an art, but its consequences are very real and pragmatic. That said, chemists often build designs on ideal systems, whereas the manufacturing of chemicals requires catalysts that withstand varied feeds, harsh conditions and long exposure times. Moreover, economical considerations are often underestimated at the catalyst design stage. Here we discuss the inclusion of economical and topological considerations early on in the catalyst design process, giving as an example the synthesis and testing of a new type of alumina/cobalt Fischer–Tropsch catalysts.

     

Methodology for the systematic design of conical plain bearings for use as main bearings in wind turbines

With the possibility to replace sliding segments on the tower without disassembling the drivetrain, the use of segmented plain bearings with conical sliding surfaces as main bearing in wind turbines has a great potential to reduce the maintenance costs and thus the levelized cost of energy (LCOE). Furthermore, the short axial design leads to lower investment costs. Since this design is totally new and no design guidelines are available so far, the objective of this paper is to investigate the influence of the geometric parameters on the hydrodynamic pressure distribution of the bearing. In this context a parameter screening is performed using a suitable test field according to Plackett and Burman in order to determine the most relevant parameters. With the help of the simulations carried out after this test field, correlations between the geometric parameters and the hydrodynamic pressure distribution are evaluated. To be able to quantitatively analyze the three-dimensional pressure distribution, several key values are defined in this paper that describe the pressure distribution. The content of this paper is part of a methodology with the goal of developing a design guideline for conical plain bearings.

     

Applying Topological and Economical Principles in Catalyst Design: New Alumina–Cobalt Core–Shell Catalysts

Designing new and effective catalysts may be an art, but its consequences are very real and pragmatic. That said, chemists often build designs on ideal systems, whereas the manufacturing of chemicals requires catalysts that withstand varied feeds, harsh conditions and long exposure times. Moreover, economical considerations are often underestimated at the catalyst design stage. Here we discuss the inclusion of economical and topological considerations early on in the catalyst design process, giving as an example the synthesis and testing of a new type of alumina/cobalt Fischer–Tropsch catalysts.