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The Shettles Method is a child conception idea that is reputed to help determine a baby's sex. It was developed by Landrum B. Shettles in the 1960s and was publicized in the book How to Choose the Sex of Your Baby, coauthored by Shettles and David Rorvik. The book was first published in 1971 and has been in print in various editions ever since.
A full bibliography of Shettles writings is available. [4] He was the developer of gamete intrafallopian transfer (GIFT), a breakthrough in fertility research Shettles developed the Shettles Method of sex selection that helps prospective parents conceive a child of the desired gender. To achieve this end, it utilizes a number of factors that ...
The sensitivity of LH tests are measured in milli international unit, with tests commonly available in the range 10–40 m.i.u. (the lower the number, the higher the sensitivity). [ citation needed ] As sperm can stay viable in the woman for several days, LH tests are not recommended for contraceptive practices, as the LH surge typically occurs ...
It necessitates the test of surge immunity in electrical or electronic equipment. IEC 61000-4-5 defines test set-up, procedures, and classification levels. In particular, it standardizes the required surge voltage and current waveforms for laboratory testing, with the "1.2/50-8/20 μs" impulse being the most frequently used surge waveform.
It also uses a sophisticated toggling system to control the visualization of data rows across many months or years. It is designed to be flexible, but still standardizes some parts of the chart. This template should be transcluded in other templates, NOT in article pages.
An example of a Levey–Jennings chart with upper and lower limits of one and two times the standard deviation. A Levey–Jennings chart is a graph that quality control data is plotted on to give a visual indication whether a laboratory test is working well. The distance from the mean is measured in standard deviations.
9% failure rate with typical use (method not used consistently or correctly) 0.3% failure rate with perfect use [7] [18] Meant to be taken at the same time every day (some pills can be taken within 2–24 hours and still be effective) [19] Combined contraceptive patch [7] 120-150 μg of norelgestromin and 20-35 μg ethinyl estradiol daily [20 ...
A compressor map is a chart which shows the performance of a turbomachinery compressor. This type of compressor is used in gas turbine engines, for supercharging reciprocating engines and for industrial processes, where it is known as a dynamic compressor. A map is created from compressor rig test results or predicted by a special computer program.