Abstract: An inactivated influenza virus preparation is described which comprises a haemagglutinin antigen stabilised in the absence of thiomersal, or at low levels of thiomersal, wherein the haemagglutinin is detectable by a SRD assay. The influenza virus preparation may comprise a micelle modifying excipient, for example ?-tocopherol or a derivative thereof in a sufficient amount to stabilise the haemagglutinin.

Abstract: An inactivated influenza virus preparation is described which comprises a haemagglutinin antigen stabilised in the absence of thiomersal, or at low levels of thiomersal, wherein the haemagglutinin is detectable by a SRD assay. The influenza virus preparation may comprise a micelle modifying excipient, for example ?-tocopherol or a derivative thereof in a sufficient amount to stabilise the haemagglutinin.

Abstract: An inactivated influenza virus preparation is described which comprises a haemagglutinin antigen stabilized in the absence of thiomersal, or at low levels of thiomersal, wherein the haemagglutinin is detectable by a SRD assay. The influenza virus preparation may comprise a micelle modifying excipient, for example ?-tocopherol or a derivative thereof in a sufficient amount to stabilize the haemagglutinin.

Abstract: An inactivated influenza virus preparation is described which comprises a haemagglutinin antigen stabilised in the absence of thiomersal, or at low levels of thiomersal, wherein the haemagglutinin is detectable by a SRD assay. The influenza virus preparation may comprise a micelle modifying excipient, for example &agr;-tocopherol or a derivative thereof in a sufficient amount to stabilise the haemagglutinin.

Abstract: The process for making the high temperature-resistant ceramic material from the MgO—Al2O3 system includes burning a mixture containing a predetermined amount of magnesium oxide (MgO) of a predetermined grain size distribution in an amount range of from 30 to 99 parts by weight and a predetermined amount of magnesium aluminate (MgAl2O4) of another different predetermined grain size distribution in a range of from 1 to 70 parts by weight to obtain a ceramic product having a thermal expansion coefficient and selecting the amounts of magnesium oxide and magnesium aluminate as well as the predetermined grain size distributions so that the thermal expansion coefficient of the ceramic product is substantially equal to that of platinum and platinum alloys and in a range of from 9×10−6 K−1 to 15×10−6 K−1.

Abstract: The invention concerns a process for the enzymatic preparation of protected di- and oligopeptides and the separation of the protective groups used. The process according to the invention enables peptides to be synthesized simply and economically and the protective group to be separated carefully. The process comprises three reaction steps: 1. Preparation of N-carbamoyl amino acid or N-carbamoyl amino acid derivatives; 2. Formation of the peptide bond between the carbamoyl-protected electrophile and nucelophile; and 3. Separation of the carbamoyl-protective group.

Abstract: A water-supported enzymatic reaction is carried out with the substrate and the enzyme present in the solid phase. Either the water does not form a liquid continuum around substrate and enzyme, or the water acts at least partially out of the gas phase, or the water required for the reaction is added via a solid, or at least a part of the water required for the reaction is transferred by means of solid body contacts or by a combination of these means. The reaction mixture can be mixed by ultrasound or turbulence, e.g. in a fluidized bed, or both.

Abstract: A phototropic glass with the optical characteristics of n.sub.d greater than to or equal to 1.59 and v.sub.d greater than or equal to 44, and with a density less than or equal to 3.0 g/cm.sup.-3 is provided having a composition comprising:______________________________________ SiO.sub.2 42-56 B.sub.2 O.sub.3 11-18 Al.sub.2 O.sub.3 0-5 sum of SiO.sub.2, B.sub.2 O.sub.3, and Al.sub.2 O.sub.3 55-75 Li.sub.2 O 3-9 Na.sub.2 O 0-7.98 K.sub.2 O 0-8.22 sum of alkaki metal oxides 7-15 MgO 3-12 CaO 0-3 SrO 0-3 BaO 0-6 ZnO 0-2 sum of alkali earth metal 3-12 oxides amd ZnO TiO.sub.2 3.06-6.74 ZrO.sub.2 2-11 Nb.sub.2 O.sub.5 2.28-8 La.sub.2 O.sub.3 0-3 Er.sub.2 O.sub.

Abstract: A phototropic glass with an optical position n.sub.d .ltoreq.1.59 and v.sub.d .gtoreq.40 and with a density of .ltoreq.3.2 g/cm.sup.3 is described for the first time. Its composition lies within the system ofSiO.sub.2 --R.sub.2 O.sub.3 --R.sub.2 O--RO--RO.sub.x --R.sub.2 O.sub.5,wherein R.sub.2 O.sub.3 is Al.sub.2 O.sub.3, B.sub.2 O.sub.3 and rare earth oxides; R.sub.2 O is alkali metal oxides; RO is alkaline earth metal oxides, ZnO, SnO, or PbO; RO.sub.x is GeO.sub.2, ZrO.sub.2, TiO.sub.2, or WO.sub.3 ; and R.sub.2 O.sub.5 is Nb.sub.2 O.sub.5, Ta.sub.2 O.sub.5, or P.sub.2 O.sub.5.

Abstract: A new phototropic glass in which the phototropic properties arise from precipitations of silver halide and which in the unirradiated condition is slightly tinted or completely colorless while showing a brown color in the light-exposed condition, comprises, in known phototropic glass compositions, an additional content of at least 0.001 wt % of TeO.sub.2 and/or Yb.sub.2 O.sub.3.