声之形

原标题：全国中成药联合采购办公室成立 对香丹、冠心宁等16个品种开展集采中国经济网北京9月13日讯（记者 郭文培）据湖北省医疗保障局网公告，全国中成药联合采购办公室（以下简称联合采购办公室）日前成立，将对香丹、复方血栓通、冠心宁等16个品种开展集采。

二 |     The 1989 song "Rhythm Nation" by Janet Jackson has a funky/new jack swing-ish beat that encourages dancing, but it also has a special frequency that can cause some laptops, fortunately from the bygone era of Windows XP, to crash, Microsoft developer Raymond Chen said.,Chen, the chief software engineer at Microsoft, reported the problem on his blog The Old New Thing this week. He claimed that the song's frequency coincided with the laptop hard drive's resonant frequency, which is an object's inherent frequency.,The way a glass breaks when exposed to certain noises is similar to how a laptop crashes, Chen asserted, as the sound from the source sends an unseen vibration through the air and onto the glass.,"A colleague of mine shared a story from Windows XP product support. A major computer manufacturer discovered that playing the music video for Janet Jackson's 'Rhythm Nation' would crash certain models of laptops," Chen wrote. "I would not have wanted to be in the laboratory that they must have set up to investigate this problem. Not an artistic judgment.",According to Chen, the manufacturer discovered that Jackson's song also crashed laptops built by its rivals.,"Playing the music video on one laptop caused a laptop sitting nearby to crash, even though that other laptop wasn't playing the video," he said. "It turns out that the song contained one of the natural resonant frequencies for the model of 5400 rpm laptop hard drives that they and other manufacturers used.",Then, manufacturers included a "custom filter in the audio pipeline that detected and removed the offending frequencies during audio playback," and this fixed the problem. Chen added that they likely attached a digital version of a "Do Not Remove" sticker on that audio filter.,However, he expressed some concern that, after adding the workaround many years ago, nobody would remember its purpose.,"Hopefully, their laptops are not still carrying this audio filter to protect against damage to a model of hard drive they are no longer using," Chen concluded.,Chen did not say what kind of sounds caused such a resonance. But that apparently does not matter now, given the transition of laptops and desktop computers to SSDs.,In addition, Chen attached to the post an old educational video from the data center, which demonstrates the effect of sound wave vibrations, namely human screams, on the operation of hard drives in a rack.,By and large, resonance is a physical phenomenon in which the frequency of one object's sound waves and those of another object coincide. This may result in a sharp rise in amplitude. This is why some bridges have previously collapsed.。公告显示，联合采购办公室由湖北省、北京市、天津市、河北省、山西省、内蒙古自治区、辽宁省、吉林省、黑龙江省、上海市、江苏省、浙江省、安徽省、江西省、山东省、河南省、广东省、广西壮族自治区、海南省、重庆市、四川省、贵州省、云南省、西藏自治区、陕西省、甘肃省、青海省、宁夏回族自治区、新疆维吾尔自治区、新疆生产建设兵团等联盟地区委派代表组成，在国家医疗保障局指导下，代表上述地区相关医药机构开展中成药及相关药品集中带量采购。其中，湖北省医疗保障局承担联合采购办公室日常工作并负责具体实施，相关公告由联合采购办公室发布。据了解，本次集中带量采购周期为2年，视情况可延长，包含复方斑蝥、复方血栓通、冠心宁、华蟾素、接骨七厘、乐脉、脉管复康、脑安、藤黄健骨、香丹、心可舒、醒脑静、鸦胆子油、银杏达莫、银杏叶提取物、振源共16个品种。其中，香丹生产文号近100个。在执行范围方面，联盟地区所有公立医疗机构（含军队医疗机构）均应参加；同时，医保定点社会办医疗机构和定点药店也被鼓励按所在联盟地区相关规定参加。返回搜狐，查看更多责任编辑：