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Nancy Butte 《体育科研》2013,34(1):30-32-38
儿童肥胖已经成为全球性的流行病。在过去的几十年里,发达国家和发展中国家的儿童肥胖都迅速增长,肥胖流行具有全球性和地区性．．同时肥胖给儿童的健康带来了前所未有的沉重负担,肥胖对儿童的心理健康和学业表现会产生负面影响,肥胖的儿童认为,他们的生活质量与正在接受癌症治疗的儿童相差无几,文章用大量的实证研究分析了儿童肥胖的原因,并推荐了儿童肥胖的治疗措施。 相似文献
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The capability to count cells from biofluids at low cost has important diagnostic implications in resource-poor settings. Many approaches have been developed to address this important need, and while most envision a low per-test cost, the detector instrument can be quite expensive. In this report, we present a novel device that enables low-cost and rapid counting of cells from a drop of blood. We demonstrate a shallow, buried, planar waveguide fabricated by ion exchange in glass that underlies a microfluidic structure for capturing cells. Laser light transmitted through the waveguide was attenuated by the number of metal nanoparticles tagged to the cells because of the interaction of the metal particles with the evanescent field of the waveguide. Calibration of the sensor using bead-tagged lymphocytes captured from human blood showed that the sensor could semi-quantitatively count as few as 100 cells/μL of blood. This technology enables the enumeration of specifically captured cells, allowing for a point-of-care, hand-held device for fast and affordable cell counting in screening, remote, or resource-poor settings. 相似文献
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