Search results
Results From The WOW.Com Content Network
Naegele's rule is named after Franz Karl Naegele, the German obstetrician who devised the rule. Naegele was born July 12, 1778, in Düsseldorf, Germany. In 1806, Naegele became ordinary professor and director of the lying-in hospital in Heidelberg. His Lehrbuch der Geburtshilfe, published in 1830 for midwives, enjoyed a successful 14 editions.
He is remembered for "Naegele's rule", a standard method of calculating the due date for a pregnancy. His name is also lent to "Naegele obliquity", also known as an anterior asynclitism. [2] A variety of obliquely contracted bony pelvis where there is arrested development of one of the sacral alae, has also been named after him (Naegele's ...
Naegele's rule is a standard way of calculating the due date for a pregnancy when assuming a gestational age of 280 days at childbirth. The rule estimates the expected date of delivery (EDD) by adding a year, subtracting three months, and adding seven days to the origin of gestational age.
Use of a pregnancy wheel overcomes the monthly variation of Naegels's rule, but one must still manually adjust for leap years. Both the rule and pregnancy wheels (or computer programs to calculate) must also be manually corrected for regular menstrual cycles that are not the average assumed default of 28 days.
Nägele's obliquity is the presentation of the anterior parietal bone to the birth canal during vaginal delivery with the biparietal diameter being oblique to the brim of the pelvis. [1]
Simpson's rules are used to calculate the volume of lifeboats, [6] and by surveyors to calculate the volume of sludge in a ship's oil tanks. For instance, in the latter, Simpson's 3rd rule is used to find the volume between two co-ordinates. To calculate the entire area / volume, Simpson's first rule is used. [7]
An artist's interpretation of Rogers U.S. Army Rangers storm the cliffs at Pointe du Hoc on D-Day, June 6, 1944. The 28 "Rules of Ranging" are a series of rules and guidelines created by Major Robert Rogers in 1757, during the French and Indian War (1754–63).
In 1847, Carl Bergmann published his observations that endothermic body size (i.e. mammals) increased with increasing latitude, commonly known as Bergmann's rule. [9] His rule postulated that selection favored within species individuals with larger body sizes in cooler temperatures because the total heat loss would be diminished through lower surface area to volume ratios. [8]