Low vision rehabilitation for better quality of life in visually impaired adults.

Background: Low vision rehabilitation aims to optimise the use of residual vision after severe vision loss, but also aims to teach skills in order to improve visual functioning in daily life. Other aims include helping people to adapt to permanent vision loss and improving psychosocial functioning. These skills promote independence and active participation in society.

Why visually impaired older adults often do not receive mental health services: the patient's perspective.

Purpose: Older adults with a visual impairment are particularly vulnerable for increased depression and anxiety symptoms; however, they tend to underutilise mental health services. The present study aims to characterise the perceived need for and barriers to use mental health services in visually impaired older adults based on Andersen's behavioural model.

Methods: A cross-sectional study in 871 visually impaired older adults (mean age 73 years) from outpatient low vision rehabilitation services was conducted.

Strategy for selection of methods for separation of bioparticles from particle mixtures.

The desired product of bioprocesses is often produced in particulate form, either as an inclusion body (IB) or as a crystal. Particle harvesting is then a crucial and attractive form of product recovery. Because the liquid phase often contains other bioparticles, such as cell debris, whole cells, particulate biocatalysts or particulate by-products, the recovery of product particles is a complex process.

Investigation and characterization of liquid two-phase systems for the separation of crystal mixtures by interfacial partitioning.

The interfacial partitioning behavior of ampicillin and phenylglycine crystals in different two-phase systems has been investigated. The two-phase systems employed are water/dodecane, water/1-butanol, and water/pentane/methanol. By means of partition experiments and microscopic imaging, it has been shown that the mechanism of separation strongly depends on the choice of the two-phase system.

Recovery of small bioparticles by interfacial partitioning.

In this article, a qualitative study of the recovery of small bioparticles by interfacial partitioning in liquid-liquid biphasic systems is presented. A range of crystallised biomolecules with varying polarities have been chosen such as glycine, phenylglycine and ampicillin. Liquid-liquid biphasic systems in a range of polarity differences were selected such as an aqueous two-phase system (ATPS), water-butanol and water-hexanol.