منابع مشابه
Eye drops and tears.
He had lost his vision despite multiple surgical attempts over the years to save his sight. Darkness came out of his mouth, as he hurled foul language at me, while I tried to conduct a preoperative anesthesia interview and prepare him for yet another surgical procedure on his eyes. He was still stunned by a collective disappointment from his previous five corneal transplants that had failed. He...
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– If deposited on a hydrophobic rough substrate, a small drop of water can look like a pearl, with a contact angle close to 180. We examine the conditions for observing such a phenomenon and show practical achievements where the contact angle can be predicted and thus quantitatively tuned by the design of the surface microstructure. Presentation. – The contact angle of a drop on a solid is idea...
متن کاملTruck drops
One of the problems facing the introduction of novel crops is the concerns about their spread into the natural environment. A long-term study of oilseed rape (canola) growing on the verges of one of Britain’s busiest motorways provides some encouragement that at least some crops find the going tough outside the field environment in which they are sown. Michael Crawley at Imperial College London...
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ژورنال
عنوان ژورنال: BMJ
سال: 1991
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.303.6805.761