Columbia-led study of more than 38,000 women enables faster, first trimester prenatal testing for leading cause of mental retardation and birth defects
A new study from Columbia University Medical Center researchers at NewYork-Presbyterian Hospital/Columbia of more than 38,000 pregnant women at 15 U.S. centers demonstrates the high accuracy of non-invasive screening for Down syndrome (also known as trisomy 21) in the first trimester of pregnancy, at 11 weeks. The findings are a significant advantage over the current standard screening, a blood test performed in the second trimester of pregnancy.
"These results will undoubtedly change national practice – all pregnant women should have the option of early screening for Down syndrome in their first trimester," said Mary E. D’Alton, M.D., principal investigator of the study. She is Chair of the Department of Obstetrics and Gynecology at Columbia University College of Physicians and Surgeons, and Chief of Obstetrics and Gynecology at NewYork-Presbyterian Hospital/Columbia. "Down syndrome screenings based on either maternal age alone, or an ultrasound or sonogram alone, are no longer justified protocols."
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Physicists working with researcher Oriol Romero-Isart devised a new simple scheme to theoretically generate arbitrarily short and focused electromagnetic fields. This new tool could be used for precise sensing and in microscopy.
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Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
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Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
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27.07.2017 | Life Sciences
27.07.2017 | Life Sciences
27.07.2017 | Health and Medicine