Many US women have children by more than one man
The first national study of the prevalence of multiple partner fertility shows that 28 percent of all U.S. women with two or more children have children by more than one man.
The first national study of the prevalence of multiple partner fertility shows that 28 percent of all U.S. women with two or more children have children by more than one man.
Social Sciences
Apr 1, 2011
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New research findings appearing in the January Journal of Lipid Research indicate that compounds called oxysterols are not present in any significant amount in multiple sclerosis patients, contradicting a previous study that ...
Biochemistry
Dec 15, 2010
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Scientists are reporting that variants of a drug already approved for treating multiple sclerosis show promise as a long sought treatment for victims of bioterrorist attack with botulinum neurotoxin -- which is 10,000 times ...
Biochemistry
Nov 17, 2010
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(PhysOrg.com) -- New research suggests that being a young mother is not a bad thing for a sheep and may mean ewes have more lambs that are just as healthy than those that are older when first bred.
Plants & Animals
Jul 13, 2010
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Why do we create and maintain social networks? Most people can immediately think of a few natural reasons -- we get something from the interaction, or the person is nearby and is close to us in proximity, age or gender.
Social Sciences
Feb 14, 2009
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Scientists at Rochester Institute of Technology are designing a new kind of optical sensor to fly in unmanned air vehicles, or surveillance drones, tracking suspects on foot or traveling in vehicles identified as a threat.
Engineering
Feb 12, 2009
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(PhysOrg.com) -- SF State's planet hunting team is trying new avenues of investigation in the quest to discover planets beyond our solar system. At the American Astronomical Society (AAS) meeting in January, graduate students ...
Astronomy
Feb 3, 2009
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Optical computing uses photons instead of electrons to perform computations, which can significantly increase the speed and energy efficiency of computations by overcoming the inherent limitations of electrons. The basic ...
Optics & Photonics
May 12, 2022
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High temperatures and low humidity—summer is approaching and with it the fire season. The lack of precipitation also makes 2019 a year characterised by risk, so some Spanish regions, such as the Balearic Islands, have taken ...
Earth Sciences
May 20, 2019
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The multiplication of integers is a problem that has kept mathematicians busy since Antiquity. The "Babylonian" method we learn at school requires us to multiply each digit of the first number by each digit of the second ...
Mathematics
Apr 12, 2019
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