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.
Semi-Diurnal tides. A semi-diurnal tide occurs generally when there are two high waters (tides) and two low waters (tides) per day. Typically the time between each successive high or low tide is 12 hours 25 minutes, this is half of one lunar day. Semi-Diurnal tide cycle, with 2 high tides and 2 low tides each day. Copyright Marine Science of Australia, all rights reserved.