Thermal Insulation of YSZ and Erbia-Doped Yttria-Stabilised Zirconia EB-PVD Thermal Barrier Coating Systems after CMAS Attack.

The impact of small deposits of calcium-magnesium-aluminium silicates (CMAS) on the top of thermal barrier coatings (TBCs) made of yttria-stabilised zirconia (YSZ) produced via electron-beam physical vapour deposition (EB-PVD) is shown to play a role in the microstructural and chemical stability of the coatings; hence, it also affects the thermal insulation potential of TBCs. Therefore, the present work investigates the degradation potential of minor CMAS deposits (from 0.25 to 5 mg·cm) annealed at 1250 °C for 1 h on a novel ErO-YO co-stabilised ZrO (ErYSZ) EB-PVD TBC, which is compared to the standard YSZ coating.

Relationships between proteasomes and viral gene products.

The interrelationships between proteasomes and viral gene products are very complex. 20S proteasomes associate with a number of viral mRNAs which are cleaved by proteasome's associated endonuclease activity. In addition proteasome's endopeptidase activities are involved in the presentation of viral antigens.

Proteasome (prosome) associated endonuclease activity.

The 20S proteasome (prosome) is a highly organized multiprotein complex with approximate molecular weight of about 700 kDa. Whilst the role of the proteasome in the processing and turnover of cellular proteins is becoming clearer, its relationship with RNA remains still obscure. Here we focus on the nature and function of proteasome associated endonuclease activity.

Relationships between proteasomes and RNA.

The 20S proteasome (prosome) is a highly organized multi-protein complex with approximate molecular weight of about 700 kDa. Whilst the role of the proteasome in the processing and turnover of cellular proteins is becoming clearer, its relationship with RNA remains obscure. Over the last decade the possibility of association of proteasomes with specific RNAs or mRNPs have been particularly controversial.

Metabolic and contractile differentiation of rabbit muscles during growth.

1. A study was carried out of post-natal evolution of the oxidative, glycolytic and contractile capacities in various types of rabbit muscle. 2.

Glycosylation and deglycosylation of proteasomes (prosomes) from calf-liver cells: high abundance of neuraminic acid.

Proteasomes (prosomes) of calf-liver cells were probed with three different biotinylated lectins: Limulus polyphemus agglutinin (LPA), specific for neuraminic acid; Solanum tuberosum agglutinin (STA), specific for GlcNac; and concanavalin A (Con A), specific for Man/Glc. While only one proteasomal protein reacted with STA, most of the proteasomal proteins reacted with LPA and several with Con A. Deglycosylation with N-glycosidase F showed that the detected glycan residues were asparagine-linked.

Comparison of muscle phosphofructokinase from euthermic and hibernating Jaculus orientalis. Purification and determination of the quaternary structure.

1. The structural properties of skeletal muscle phosphofructokinase from euthermic and hibernating jerboa were compared. 2.

Regulation of the skeletal muscle metabolism during hibernation of Jaculus orientalis.

1. The glycolytic flow in the skeletal muscle was considerably depressed during hibernation of Jaculus orientalis. 2.