In addition, the role, scope of practice, and prescribing authorization of a nurse midwife will vary depending on licensure and where they practice. Certified Nurse Midwife responsibilities may include: 1  Primary and specialty care for women.
Messages: 357. Slack tide is when the current goes slack between tide changes and slack usually last 30min to an hour after peak high tide or peak low tide(hence high slack or low slack). Feb 27, 2008.
The moon revolves around Earth every 23 hours and 53 minutes, or the time of a tidal day, but because the moon and earth have elliptical orbits, a full tidal cycle actually takes 19 years. Variations in the distance and alignment of the sun and moon to the Earth result in several different types of tides.