Possible diurnal variation in 2,3-diphosphoglyceric acid.

Diurnal variation in the nitrate content of parsley foliage

The diurnal fluctuation of nitrate concentration in the foliage of three parsley subspecies (plain-leafed, curly-leafed and turnip rooted parsley) cultivated in the spring and autumn of two consecutive years was examined. Nitrogen was applied at 30 (Control), 75, 150, 300 mg kg-1 in both years, but with the addition of 450 mg kg-1 in year 2. Harvest was carried out at 08:30, 12:30 and 17:30 on ...

Diurnal variation in asthma.

It has been known for many hundreds of years that asthma is worse at night. Sir John Floyer in his classic 'Treatise of the Asthma' (1698) wrote: 'I have observed the fit always to happen after Sleep in the Night when Nerves are filled with windy Spirits, and the heat of the bed has rarified the Spirits and Humours'. l Although these exacerbations are a well established clinical phenomenon, the...

Diurnal variation of urinary markers of nucleic acid oxidation.

AIMS Urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) and 8-oxo-7,8-dihydroguanosine (8-oxoGuo) are biomarkers of oxidative stress with clinical potential in a variety of diseases. As part of their clinical validation, this study aimed to investigate whether the urinary excretion of 8-oxodG and 8-oxoGuo undergoes diurnal variation and to evaluate the validity of 6-hour sampling as well as ...

2,3-Diphosphoglyceric Acid Changes in Uremia and During Hemodialysis

Diurnal variation in febrile convulsions.

This study sought to determine diurnal variations in febrile convulsions, and to investigate whether such variations influenced the severity of febrile convulsions. The study involved 326 children, between ages 6 months and 6 years, with simple febrile convulsions. Data were collected systematically by interviewing witnesses within the week after febrile convulsions occurred. The frequency of f...