Started her period more than 2 years ago but they're not regular. (It's normal to have irregular periods for the first year or so.) Has periods with severe cramps, heavy bleeding, or severe PMS Read more: Raising boys and girls: Differences in development Activities that boost physical de...
(darn you, Linnaeus). Not only do these plants step it up and put on a show when most other plants are long done blooming, but given the right conditionsthey can perennializein your garden OR you can easily root cuttings to have plant starts for next Spring. That’s a win-win for ...
Some are irregular. One January day, I was waiting for the subway. When the F train arrived I got on, and then watched as a young woman ran up and jumped on just before the doors closed Unfortunately, when she looked out the window, she realized that she had dr...
Conversely, however, the nature of such “gig work” means that opportunities for workers are often irregular in terms of income, working conditions, social protection, skill utilization, and the right to collective bargaining (see [32]). Specifically, compared to regular employees, most delivery ...
A central problem in orbit transfer optimization is to determine the number, time, direction, and magnitude of velocity impulses that minimize the total impulse. This problem was posed in 1967 by T. N. Edelbaum, and while notable advances have been made, a rigorous means to answer Edelbaum’...
In addition to meeting the evolving mobility needs of modern society, battery electric vehicles (BEVs) also fulfill the need to decarbonize private transportation. BEVs are treated as zero-emission substitutes for internal combustion engine vehicles. They are one of the possible solutions aimed at...