baby直播app

Companies paying celebrities big money to endorse their products may not realize that negative perceptions about a celebrity are more likely to transfer to an endorsed brand than are positive ones, according to a new University of baby直播app Boulder study. Celebrity endorsements are widely used to increase brand visibility and connect brands with celebrities鈥� personality traits, but do not always work in the positive manner marketers envision, according to Margaret C. Campbell of CU-Boulder鈥檚 Leeds School of Business, who led the study.

NIST news release Like many new measurement tools, the laser frequency comb seemed at first a curiosity but has found more practical uses than originally imagined. The technique for making extraordinarily precise measurements of frequency has now moved beyond physics and optics to advance biomedicine by helping researchers evaluate a novel instrument that kills harmful bacteria without the use of liquid chemicals or high temperatures.

It鈥檚 no secret that Mars is a beaten and battered planet -- astronomers have been peering for centuries at the violent impact craters created by cosmic buckshot pounding its surface over billions of years. But just how beat up is it?

An international research team led by the University of baby直播app Boulder has generated the first laser-like beams of X-rays from a tabletop device, paving the way for major advances in many fields including medicine, biology and nanotechnology development.