Results 291 to 300 of about 561,323 (357)
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To pack or not to pack? A contemporary review of middle ear packing agents
The Laryngoscope, 2011AbstractMiddle ear packing agents are used in otologic surgery to provide support to the middle ear structures, maintain aeration of the middle ear, and promote hemostasis. However, there is currently a lack of standardization regarding the use of different types of packing agents. The choice of materials and how they are used remain controversial.
Yi, Shen +4 more
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A Pack Is Not a 'Pack' Is Not a Pack
JAMA: The Journal of the American Medical Association, 1985To the Editor.— Magazines and newspapers are now advertising a new type of cigarette pack, a 25s pack, instead of the traditional pack of 20 cigarettes. This new marketing concept is "for smokers who prefer the convenience of five more cigarettes per pack." If the 25s pack is accepted by the consumer and widely marketed by the industry, smoking risk ...
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Nature Reviews Chemistry, 2021
Hydrogen-bonded organic frameworks can be employed to encapsulate protein therapeutics for enhanced cell uptake and intracellular biocatalysis.
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Hydrogen-bonded organic frameworks can be employed to encapsulate protein therapeutics for enhanced cell uptake and intracellular biocatalysis.
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NASAL PACKING: The Rubber Pneumatic Pack
Archives of Otolaryngology - Head and Neck Surgery, 1951An improved model of the rubber pneumatic nasal pack previously described1has been developed after 15 yr. of experience with nasal packing methods. The earlier model of the nasal pack (Fig. 1) was unavailable during World War II owing to the rubber shortage, and the present change was felt advisable when production was resumed.
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Randomly Packed and Solidly Packed Spheres
Canadian Journal of Mathematics, 1964In the classical packing problem unit spheres are placed without overlapping in D-dimensional space. When D = 2, the densest packing is a familiar regular arrangement of circles, each circle touching six others. In this packing, circles cover a fraction π/√12 = 0.9069 . . . of the area of the plane.
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Powder Technology, 2019
The addition of fibres to concrete can significantly improve the hardened properties but may adversely affect the fresh properties. Apart from entangling with each other to hinder the flow of fresh concrete, the fibres might also interfere with the ...
L.-G. Li +3 more
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The addition of fibres to concrete can significantly improve the hardened properties but may adversely affect the fresh properties. Apart from entangling with each other to hinder the flow of fresh concrete, the fibres might also interfere with the ...
L.-G. Li +3 more
semanticscholar +1 more source
Nature, 2009
The Boston-area biotechnology cluster is one of the most successful on the planet. But competition is growing from other states and countries. Heidi Ledford reports on what the region is doing to maintain its edge.
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The Boston-area biotechnology cluster is one of the most successful on the planet. But competition is growing from other states and countries. Heidi Ledford reports on what the region is doing to maintain its edge.
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Combinatorica, 2012
A seagull in a graph is an induced path with \(3\) vertices. The main result of this very extensive paper is the following: Theorem: If \(G\) is a graph (not equal to \(K_1 + C_5)\)) with \(\alpha(G) \leq 2\), then \(G\) contains \(k\) disjoint seagulls if and only if (a) \(| V(G)| \geq 3k\), (b) \(G\) is \(k\)-connected, (c) for every clique \(C\) of \
Maria Chudnovsky, Paul D. Seymour
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A seagull in a graph is an induced path with \(3\) vertices. The main result of this very extensive paper is the following: Theorem: If \(G\) is a graph (not equal to \(K_1 + C_5)\)) with \(\alpha(G) \leq 2\), then \(G\) contains \(k\) disjoint seagulls if and only if (a) \(| V(G)| \geq 3k\), (b) \(G\) is \(k\)-connected, (c) for every clique \(C\) of \
Maria Chudnovsky, Paul D. Seymour
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The Packing Theorem and Packing Measure
Mathematische Nachrichten, 1990AbstractFor a VITALI class of a metric space (X, d) a packing measure is introduced following the ideas of [7]. The Packing Theorem of VITALI is a powerful mean to derive density results for measures [1, 2, 3]. Conversely, the notion of packing measure allows us to give sufficient conditions for a measure that the packing theorem of VITALI hods.
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Sphere packings and packings of ellipsoids
2006Homogeneous and heterogeneous sphere packings and packings of circles together with their densities are defined, and a classification into types of sphere packings and types of circle packings is introduced. Some properties of the 11 types of homogeneous circle packings are described in a table.
E. Koch, W. Fischer
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