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.
1 Semidiurnal tide refers to a tide which has a period or cycle of approximately half of one tidal day (about 12.5 hours). 2  Semidiurnal tides usually have two high and two low tides each day. 3  The tides at Brisbane Bar are a typical example of semidiurnal tides.