A new laboratory study reveals that cigarette smoke completely prevented wound healing at concentrations over 20 percent in a wound healing assay, whereas e-cigarette vapor had no effect, even at 100 percent concentration and double the amount of nicotine relative to smoke. The 'wound' was created in a cultured layer of of vascular endothelial cells. These are the cells that line the inside of blood vessels.
Sound permeates the human experience and gets our attention, sometimes traumatically so. Consider the car horn. It is a widespread practical application of this noise-trauma-alert principle -- and an increasing source of noise pollution worldwide as the global traffic population grows. It also is the subject of new noise pollution research to be presented during Acoustics '17 Boston. The study introduces a new pedestrian-friendly car-horn sound identified through the Mean Option Score.
The blood-brain barrier protects the brain and central nervous system from harmful chemicals circulating in the blood but also prevents delivery of drugs that could help treat patients with brain cancers and diseases. With recent advances in technology, the blood-brain barrier can now be opened safely, noninvasively and in a targeted manner using ultrasound. One of the newest approaches aiming to advance this research will be presented during Acoustics '17 Boston.
People who are visually impaired will often use a cane to feel out their surroundings. With training and practice, people can learn to use the pitch, loudness and timbre of echoes from the cane or other sounds to navigate safely through the environment using echolocation. Bo Schenkman, from KTH Royal Institute of Technology in Stockholm, Sweden, will present a summary of some aspects of his work on human echolocation during Acoustics '17 Boston.
Paris' Cathedral of Notre Dame has a ghost orchestra that is always performing, thanks to a sophisticated, multidisciplinary acoustics research project that will be presented during Acoustics '17 Boston. In the project, computer models use recordings from a live concert held at the cathedral and detailed room acoustic simulations to produce a novel type of audience experience: a virtual recreation of the live performance using spatial audio and virtual reality.
In passive elastography, the elasticity of tissue is measured using the body's own propagation of shear waves, which enables more effective imaging deeper inside the body in an even more noninvasive way than traditional elastography and may be used for cancer detection. Stefan Catheline, researcher at the University at Lyon will discuss this and other elastography advances during Acoustics '17 Boston.