منابع مشابه
Structural Design and Sealing Performance Analysis of Biomimetic Sealing Ring
In order to reduce the failure probability of rubber sealing rings in reciprocating dynamic seal, a new structure of sealing ring based on bionics was designed. The biomimetic ring has three concave ridges and convex bulges on each side which are very similar to earthworms. Bulges were circularly designed and sealing performances of the biomimetic ring in both static seal and dynamic seal were ...
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Laparoscopic vessel sealing devices have revolutionized modern laparoscopy. These devices fall into 2 major categories: advanced bipolar and ultrasonic instruments. The range of tissue effects available with these technologies is more limited than with conventional monopolar electrosurgery; however, both advanced bipolar and ultrasonic devices efficiently seal vessels (≤7-mm and ≤5-mm diameter,...
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The transitional epithelium lining the ducts of various glands such as salivary and mammary glands, and organs such as liver, pancreas, kidney and lung must bear a permeability barrier as they are in direct contact with the hostile environment in the lumen. The barrier function of pancreatic ductal epithelium is essential for preventing the back flux of proteases, lipases and DNAases from the p...
متن کاملPlaque sealing by coronary angioplasty.
T he concept of plaque sealing by coronary balloon angioplasty has been around for some time. It is based on two principles. First, a coronary stenosis subjected to balloon angioplasty will not progress to a total occlusion later on unless it occludes abruptly during or immediately after the intervention. Even if a restenosis occurs, the smooth inner lining of the intimal proliferation virtuall...
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The importance of hardware security of electronic systems is rapidly increasing due to (1) the increasing reliance of mass-produced and mission-critical systems on embedded electronics, and (2) the ever-growing supply chains that disentangle chip designers and manufacturers from OEMs. Our work shows how to dramatically reduce vulnerability to Trojan-horse injection and in-field component replac...
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ژورنال
عنوان ژورنال: Mechanical Engineering
سال: 2003
ISSN: 0025-6501,1943-5649
DOI: 10.1115/1.2003-feb-1