PVP-augmented LISP and DISP AutoAnalyzer haemagglutination channels.

Curve regenerationin modified LISP and DISP AutoAnalyzer haemagglutination channels.

Automatic technique for titration of influenza virus haemagglutination inhibitors.

An automatic method, utilizing the AutoAnalyzer, for titration of influenza virus haemagglutination inhibitors is described. The titres obtained compare favourably with those obtained by densitometric methods. So far, the technique has not proved superior to the densitometric methods in either speed of operation or in reproducibility but various developments are suggested to effect this.

Spray drying of an attenuated live Newcastle disease vaccine virus intended for respiratory mass vaccination of poultry.

A powder vaccine intended for aerosol vaccination of poultry was formulated by spray drying a live attenuated Newcastle disease virus with potential stabilizers (mannitol, trehalose, polyvinylpyrrollidone (PVP), bovine serum albumin (BSA)). Thermodynamic properties, water sorption, particle size distribution, nebulization properties, density and morphology of the powders were evaluated and the ...

Risk factors for recollapse of the augmented vertebrae after percutaneous vertebroplasty for osteoporotic vertebral fractures with intravertebral vacuum cleft

To determine risk factors related to recollapse of the augmented vertebrae after percutaneous vertebroplasty (PVP) for osteoporotic vertebral compression fractures (OVCFs) with intravertebral vacuum cleft (IVC).Fifty-two patients treated with PVP for single OVCFs with the IVC were retrospectively reviewed. The follow-up period was at least 2 years. Vertebral height loss ≥15% or kyphotic angle ≥...

Submillisecond-response nematic liquid crystals for augmented reality displays

We report a new nematic liquid crystal (LC) mixture with an ultra-low rotational viscosity (γ1 = 53.4 mPas @ 35°C), relatively high birefringence (Δn ≈0.15), and moderate dielectric anisotropy (Δε = −2.80 @ 35°C). When employed in a liquid-crystal-on-silicon (LCoS) projector with RGB light-emitting diodes (LEDs), a sub-millisecond response time is obtained without the need for complicated overd...