Home nebulisers can affect the colour of domestic gas flames

Home nebulisers can affect the colour of domestic gas flames.

Colour vision of domestic chicks.

The colour vision of domestic chicks (Gallus gallus) was investigated by training them to small food containers decorated with tilings of grey and coloured rectangles. Chicks learn to recognise the colour quickly and accurately. Chicks have four types of single-cone photoreceptor sensitive to ultraviolet, short-, medium- or long-wavelength light. To establish how these receptors are used for co...

Home nebulisers in childhood asthma: survey of hospital supervised use.

OBJECTIVE To review the management of and outcome in asthmatic children using home nebulisers under hospital supervision. DESIGN Postal questionnaires sent to parents. SETTING Paediatric departments of a children's hospital and a district general hospital. SUBJECTS Parents of 93 asthmatic children who had been loaned home nebulisers for administration of bronchodilators with verbal instru...

Oxygen as a driving gas for nebulisers: safe or dangerous?

Changes in blood gas tensions occurring when 100% oxygen or air was used as the driving gas for nebulised salbutamol were studied in 23 patients with severe airways obstruction. The patients fell into three groups: nine had chronic bronchitis and emphysema with carbon dioxide retention, seven had emphysema and chronic bronchitis without carbon dioxide retention, and seven had severe asthma (no ...

Colour categorization by domestic chicks.

Spectral stimuli form a physical continuum, which humans divide into discrete non-overlapping regions or categories that are designated by colour names. Little is known about whether non-verbal animals form categories on stimulus continua, but work in psychology and artificial intelligence provides models for stimulus generalization and categorization. We compare predictions of such models to t...