منابع مشابه
Marine biofouling: a sticky problem.
Organisms that colonise underwater surfaces, such as barnacle larvae and spores of algae, use a diverse array of biological 'glues' to provide both temporary and more permanent adhesion. The practical consequence of colonisation by these organisms is biofouling - something that has plagued mariners for years - causing increased drag and, in extreme cases, corrosion. Might there be a biological ...
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OBJECTIVES: To investigate various agents for adhesion prevention when used as adjuvants during pelvic surgery. SEARCH STRATEGY: The following databases were searched: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE and SCOPUS. Intra-abdominal adhesions may occur after most surgical procedures, and are of major clinical, social and economic concern. In most instanc...
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Sticking plasters revolutionized the protection of minor wounds, but they’re not ideal for fragile skin. A material that mimics the adhesive properties of certain beetles’ feet might provide a solution. Adhesives that stick to skin for long periods of time, or over multiple cycles of use, are vital for medical applications. Such materials have to conform to stringent standards — for example, th...
متن کاملthe algorithm for solving the inverse numerical range problem
برد عددی ماتریس مربعی a را با w(a) نشان داده و به این صورت تعریف می کنیم w(a)={x8ax:x ?s1} ، که در آن s1 گوی واحد است. در سال 2009، راسل کاردن مساله برد عددی معکوس را به این صورت مطرح کرده است : برای نقطه z?w(a)، بردار x?s1 را به گونه ای می یابیم که z=x*ax، در این پایان نامه ، الگوریتمی برای حل مساله برد عددی معکوس ارانه می دهیم.
15 صفحه اولAutomated Removal of Prepreg Backing Paper - A Sticky Problem
Automated solutions for manufacturing composite products based on prepreg often imply Automatic Fiber Placement or Automatic Tape Laying. These systems are generally associated with huge investments. For certain manufacturing applications it is interesting to investigate alternatives to find simpler and less costly automation. One example of an automated system could be the use of a standard in...
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ژورنال
عنوان ژورنال: Science
سال: 2020
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.368.6487.150-e