It was ordered by regulators for new houses with electric heat in a peak period defined as 8 A.M. to 8 P.M.
Patients served as their own controls and conditional logistic regression was used to compare exposure to a refill during the hazard period, defined as days 2-36 preceding the seizure-related event, to exposure during the control period, defined as days 51-85 preceding the seizure-related event.
Some scholars have advocated extending the period defined as late antiquity (c. 250 c. 750 ce) into the 10th century or later, and some have proposed a Middle Ages lasting from about 1000 to 1800.
Objective: The purpose of this study was to investigate Chlamydia trachomatis and Neisseria gonorrhoeae infections that are diagnosed during the postpartum period (defined as the 3 months after delivery).
Providing nasal ventilation during the "apneic period", defined as the time between the end of bag-mask ventilation and successful placement of an appropriate airway device, may allow for improved oxygenation throughout the process in which the airway is secured.
Six surveys were recorded each spring and were split into the early period (defined as the period before the peak of aphid growth) and the late period (after the peak).
All Middle American civilizations used the two first counts, which permitted officials accurately to determine a date within a period defined as the least common multiple of 260 and 365: 18,980 days, or 52 years.
The United States wants to ensure that Iran would have no less than a one-year "breakout" period, defined as the time it would need to produce the fissile material required for one nuclear bomb, if Tehran's leadership decided to pursue nuclear weapons.
In this study, we investigated natural enemy (ladybeetle) and pest (wheat aphids) population abundance in wheat fields in the early period (defined as the main period for aphid colonization) and the late period (i.e., the main period for aphid reproduction) in different landscapes.
It increased circular counts by 150 percent in the first six weeks of the back-to-school period (defined as June 30 through Aug. 10) this year versus last year, and increased the number of products promoted via e-mail by about the same amount, according to the advertising analysis firm Market Track.
The duration of one period defined as t 0. t 0 is very small.
