If the area becomes clear, the cloudiness is due to filming from hard water.
If the glass feels pitted when you rub a pin across it, the cloudiness is due to etching.
The stability of the apple juice with respect to browning and cloudiness was evaluated by studying qualitatively the activity of polyphenol oxidase (PPO), and pectin methyl esterase (PME) enzymes at combined treatments of HHP and temperature (10 to 50 °C, HHP at 750 MPa and holding time from 1 to 25 min).
Table 1 shows the number of nights in the dataset for which each degree of cloudiness was observed at 1 am.
Of the 8 climatic variables, the combination of temperature, relative humidity, precipitation, insolation, and cloudiness was significantly associated with salmonellosis (P < 0.01), vibriosis (P < 0.05), and enterohemorrhagic Escherichia coli O157 H7 infection (P < 0.01).
The reaction mixture was warmed slightly to 30°C and stirred vigorously until cloudiness was observed (∼1 3 min).
CFU sampling was done at an interval of 1 h until visual cloudiness was noted.
Cloudiness was created from long-term (2000 2010) NASA moderate resolution imaging spectroradiometer (MODIS) data and described in further detail by [6].
Cloudiness was scored during 34.2%% of daytime observations (394 out of 1,152 observations).> The number of flies caught on the sticky paper traps during daytime differed significantly between trap locations (Chi squared: χ = 10.8, df = 3, P = 0.013).
Illustrating the effect of the mountains upon precipitation and cloudiness is the contrast between the roughly 80 inches (2,000 mm) of rain and 150 cloudy days per year for the eastern slopes of the Sierra Madre Oriental and the roughly 40 inches (1,000 mm) of rain and 90 cloudy days per year that characterize much of the Pacific slope west of the Sierra Madre del Sur.
