Placenta previa happens when the placenta partly or completely covers the cervix, which is the opening of the uterus. Your baby passes from the uterus into the cervix and through the birth canal during a vaginal delivery. Normally, the placenta attaches toward the top of the uterus, away from the cervix. Hereâs what happens with placenta previa: As your cervix opens during labor, it can cause blood vessels that connect the placenta to the uterus to tear. This can lead to bleeding and put both you and your baby at risk. Nearly all women who have this condition will have to have a C-section to keep this from happening.
Look up giga-in Wiktionary, the free dictionary. Giga (/ËdÊÉªÉ¡É/ or /ËÉ¡ÉªÉ¡É/) is a unit prefix in the metric system denoting a factor of a (short-form) billion (10 9 or 1000000000). It has the symbol G. Giga is derived from the Greek word Î³Î¯Î³Î±Ï, meaning  giant . The Oxford English Dictionary reports the earliest written use of giga in this sense to be in the Reports of the IUPAC 14th Conference in 1947: The following prefixes to abbreviations for the names of units should be used: G giga 10 9 Ã.
Gigahertz, generally abbreviated GHz, refers to frequencies in the billions of cycles per second range. Giga is the standard multiplier for 1 billion, and Hertz is the standard unit for measuring frequencies, expressed as cycles or occurrences per second. One GHz is equivalent to 1,000 megahertz (MHz). Most commonly, gigahertz is used when discussing computer performance or radio frequencies.