Construction of a temporary protective embankment for eliminating a failure of a sewer inverted siphon

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 9, pp. 16–19, September, 1991.     

Research on the morphology of river beds and their modelling

Conclusion The Seminar clearly established the promising trend of scientific research on the themes developed by the Soviet scientists and the need for further efforts in the following directions: a) a study of the physical nature of the hydraulic resistance in alluvian rivers; b) a study (with appropriate physical experiments) of the interaction between the flow and the shifting bed and the development, on this basis, of the problems of riverbed processes and riverbed morphology. Based on the Proceedings of the Thirteenth Congress of the International Association for Hydraulic Research (IAHR): see Gidrotekhnicheskoe Stroitel'stvo, No. 12 (1969). Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 3, pp. 52–54, March, 1971.     

When an Encapsulating Oxide Layer Promotes Reaction on Noble Metals: Dewetting and In situ Formation of an “Inverted” FeO x /Pt Catalyst

An ultra-thin FeO(111) film grown on Pt(111) is found to exhibit a much higher rate of CO oxidation at stoichiometric CO:O₂ ratios than the clean Pt(111) surface. This unexpected result is rationalized on the basis of reaction induced dewetting of the oxide film, ultimately resulting in highly dispersed FeO _x nanoparticles on Pt(111). The effect may have a strong impact on the catalytic properties of the noble metal particles encapsulated by the reducible oxide support as a result of strong metal-support interaction.     

Recent Advances and Future Aspects in the Selective Isomerization of High n‐Alkanes

This article provides an overview of the advances that have been marked during the last decades in the field of hydroconversion of high n‐alkanes (C₇ ⁺) with particular stress on the promising ways to meet the requirements for improved quality of motor fuels and oils. Particular attention is given to a catalyst formulation for selective conversion of high n‐alkanes to branched hydrocarbons. The challenge for successfully solving this problem is to find an effective catalyst favoring the isomerization of n‐alkanes without too much cracking. The regulation of active sites and adsorption properties, as well as the topology of support surfaces, allows a more predictive design of novel catalysts for selective conversion of high n‐alkanes into their branched isomers.     

Effect of growth temperature on properties of transparent conducting gallium-doped ZnO films

Transparent conducting gallium-doped ZnO films are deposited on glass substrates by magnetron sputtering of conducting ceramic targets. The dependences of structural, electric, and optical characteristics of ZnO:Ga films on the substrate temperature are investigated during the deposition. Stability of resistivity of films is considered during annealing in air. It is found that the films deposited at the substrate temperature of 250°C have the lowest resistivity of 3.8 × 10⁻⁴ Ω cm, while those deposited at 200°C have the highest thermal stability.     

Y98 Mutation Leads to the Loss of RsfS Anti-Association Activity in Staphylococcus aureus

Ribosomal silencing factor S (RsfS) is a conserved protein that plays a role in the mechanisms of ribosome shutdown and cell survival during starvation. Recent studies demonstrated the involvement of RsfS in the biogenesis of the large ribosomal subunit. RsfS binds to the uL14 ribosomal protein on the large ribosomal subunit and prevents its association with the small subunit. Here, we estimated the contribution of RsfS amino acid side chains at the interface between RsfS and uL14 to RsfS anti-association function in Staphylococcus aureus through in vitro experiments: centrifugation in sucrose gradient profiles and an S. aureus cell-free system assay. The detected critical Y98 amino acid on the RsfS surface might become a new potential target for pharmacological drug development and treatment of S. aureus infections.