搜索结果: 16-30 共查到“国际动态 声学”相关记录49条 . 查询时间(3.256 秒)
Sound waves create whirlpools to round up tiny signs of disease
Sound waves create whirlpools tiny signs of disease
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2017/2/16
Mechanical engineers at Duke University have demonstrated a tiny whirlpool that can concentrate nanoparticles using nothing but sound. The innovation could gather proteins and other biological structu...
Haptics researchers have long known that applying ultrasonic vibrations to a flat, featureless glass plate makes it feel slippery. But they have also long debated why this occurs.Northwestern Engineer...
With more than 800,000 miles of sewer pipes in the United States, wastewater utilities tasked with keeping those pipes clear have their work cut out for them.Now, a small business has developed a quic...
鸟类能学会抽象的语法结构
鸟类 抽象 语法结构
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2016/6/29
据物理学家组织网报道，荷兰莱顿大学的科学家在最新一期美国《国家科学院学报》上撰文指出，他们通过对两类鸣禽进行实验发现，至少有两类鸟能学会定义抽象语法结构的规则。在过去50多年间，科学家们已经发现，很多曾被认为人类专属的能力或特征可能也存在某些动物身上。比如，懂得团队其他成员的想法；能使用工具；拥有独特的性格；能感受情感等。而在最新研究中，米歇尔·史毕根斯和卡勒·腾-凯特发现，斑胸草雀和相思鹦鹉这两...
Acoustic technique presents fresh take on water treatment
Acoustic technique water treatment
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2016/3/28
When oil and gas are extracted from the earth, water also comes to the surface. Known as produced water, it contains naturally occurring hydrocarbons, salt, bacteria, radioactive material and other co...
Bad vibrations:UCI researchers find security breach in 3-D printing process
Bad vibrations UCI researchers security breach 3-D printing process
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2016/3/11
With findings that could have been taken from the pages of a spy novel, researchers at the University of California, Irvine have demonstrated that they can purloin intellectual property by recording a...
Researchers Develop Algorithm to 3D Print Vibrational Sounds
Researchers 3D Print Vibrational Sounds
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2015/11/12
In creating what looks to be a simple children’s musical instrument—a xylophone with keys in the shape of zoo animals—computer scientists at Columbia Engineering, Harvard, and MIT have demonstrated th...
石墨烯使人能靠回声定位
石墨烯 回声定位
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2015/7/9
美国科学家日前以石墨烯为材料，制造出质量轻薄的超声波发射器和接收器。这套系统使人类具有了类似蝙蝠的能力，即利用声音精确感知和测量身体周围事物的距离和运动速度。蝙蝠和某些海洋动物能够利用高频率的声音进行回声定位或信息交流。它们能通过口腔或鼻腔把从喉部产生的超声波发射出去，利用折回的声波来定向，并判定附近物体的位置、大小以及是否在移动。但受生理条件和技术限制，人类还未能充分利用该项技能。人类能够听到频...
OSU researchers prove magnetism can control heat,sound
OSU researchers magnetism can control heat sound
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2015/6/18
Phonons—the elemental particles that transmit both heat and sound—have magnetic properties, according to a landmark study supported by Ohio Supercomputer Center (OSC) services and recently published b...
Acoustic tweezers manipulate cell-to-cell contact（图）
Acoustic tweezers manipulate cell cell contact
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2014/12/30
"Optical tweezers are the gold-standard technique in the field," said Tony Jun Huang, professor of engineering science and mechanics. "They can trap two cells in place, but because of their ...
加拿大医生成功利用超声波完成无伤口肿瘤切除手术
加拿大 超声波 肿瘤
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2014/8/13
据2014年8月7日《世界日报》报道，多伦多病童医院(Hospital for Sick Children )的医生上月17日以高能量聚焦式超音波(HIFU)无伤口切除法，为加拿大一名16岁少年切除了他腿上的一个良性肿瘤。据信这是北美首例以这种方式切除小儿骨样骨瘤(osteoid osteoma)的病例。
The Surface of the Sea is a Sink for Nitrogen Oxides at Night（图）
Nitrogen Oxides Sink Surface
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2014/3/20
The surface of the sea takes up nitrogen oxides that build up in polluted air at night, new measurements on the coast of southern California have shown. The ocean removes about 15 percent of these che...
University of Illinois study of 2011 flood will lead to better preparedness（图）
2011 flood better preparedness Illinois
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2014/3/20
In May 2011, when the U.S. Army Corps of Engineers used explosives to breach a levee south of Cairo, Ill., diverting the rising waters of the Mississippi and Ohio rivers to prevent flooding in the tow...
A new way to break the ice（图）
ice a significantly
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2014/3/20
A research team has developed a significantly more cost-effective and easily accessible process for testing ice adhesion with different materials. Development of this process and other findings in fun...
声波可让物体在空气中飘浮
声波 悬浮物体 磁力
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2013/8/13
据物理学家组织网近日报道，瑞士联邦理工学院（ETH）的科学家发明了一种机器，利用声波可以让物体在空气中飘浮，甚至四处移动，并且可以一次性搬运多个对象。该研究成果刊登在最新一期的《自然》和美国《国家科学院学报》上。